/* ==========================================================================
   能猫智匠云 V2 — 匠造蓝 · Blueprint Engineering
   Brand: 匠造蓝 #3d73dd
   ========================================================================== */

@font-face { font-family: "Geist"; src: url("../fonts/geist-var.woff2") format("woff2"); font-weight: 100 900; font-display: swap; }
@font-face { font-family: "Geist Mono"; src: url("../fonts/geist-mono-400.woff2") format("woff2"); font-weight: 400; font-display: swap; }
@font-face { font-family: "Geist Mono"; src: url("../fonts/geist-mono-500.woff2") format("woff2"); font-weight: 500 700; font-display: swap; }
@font-face { font-family: "NM SC"; src: url("../fonts/nm-sc-700.woff2") format("woff2"); font-weight: 600 900; font-display: swap; }
@font-face { font-family: "NM SC"; src: url("../fonts/nm-sc-400.woff2") format("woff2"); font-weight: 100 500; font-display: swap; }

:root {
  /* 匠造蓝 scale */
  --blue: #3d73dd;
  --blue-50: #f2f6fe;
  --blue-100: #e4ecfc;
  --blue-200: #c6d7f8;
  --blue-300: #96b4f1;
  --blue-400: #6a95ea;
  --blue-600: #3364c9;
  --blue-700: #2a56b3;
  --blue-800: #1d3f87;

  /* blueprint navy (dark chapters) */
  --navy: #071230;
  --navy-2: #0b1a3d;
  --navy-3: #10234e;
  --navy-4: #17305f;

  /* drafting paper (light chapters) */
  --paper: #f2f4f8;
  --white: #ffffff;

  --tx-d: #eaf0fc;
  --mu-d: #8293b8;
  --line-d: rgba(150, 180, 241, .16);
  --tx-l: #0a1430;
  --mu-l: #66708a;
  --line-l: rgba(10, 20, 48, .11);

  --orange: #ff6a2b;  /* safety / alarm */
  --mint: #22c48f;    /* pass / ok */
  --cyan: #7fd6ff;

  /* semantic chapter tokens (flip in light mode) */
  --acc-d: #96b4f1;
  --acc-d2: #6a95ea;
  --bl: 150,180,241;
  --nv: 7,18,48;
  --nv2: 11,26,61;
  --tx-d2: #a9b7d6;
  --tx-d3: #c3cee8;
  --mu-d2: #63739a;
  --sheet-shadow: 0 -30px 80px -20px rgba(2,8,26,.6);
  --hcard-shadow: 0 30px 80px -20px rgba(2,8,26,.7);
  --wm-a: rgba(150,180,241,.95);
  --wm-b: rgba(61,115,221,.85);

  --grid-d: rgba(150, 180, 241, .07);
  --grid-d2: rgba(150, 180, 241, .035);
  --grid-l: rgba(61, 115, 221, .085);
  --grid-l2: rgba(61, 115, 221, .04);

  --ease: cubic-bezier(.16, 1, .3, 1);
  --ease-io: cubic-bezier(.76, 0, .24, 1);
  --ease-o: cubic-bezier(.33, 1, .68, 1);

  --r-lg: 14px;
  --r-md: 10px;
  --r-sm: 6px;
  --r-btn: 8px;

  --gut: clamp(20px, 3.3vw, 48px);
  --max: 1520px;
  --nav-h: 76px;

  --f-sans: "Geist", "PingFang SC", "HarmonyOS Sans SC", "MiSans", "Microsoft YaHei UI", "Microsoft YaHei", "Noto Sans SC", "Noto Sans CJK SC", system-ui, sans-serif;
  --f-disp: "Geist", "NM SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --f-mono: "Geist Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, "PingFang SC", "Microsoft YaHei", monospace;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
html.lenis, html.lenis body { height: auto; }
.lenis.lenis-smooth { scroll-behavior: auto !important; }
.lenis.lenis-stopped { overflow: hidden; }
body {
  margin: 0; background: var(--navy); color: var(--tx-d);
  font-family: var(--f-sans); font-size: 16px; line-height: 1.65;
  -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; text-rendering: optimizeLegibility;
  overflow-x: clip;
}
h1, h2, h3, h4, p, ul, ol, dl, dd, figure { margin: 0; }
ul, ol { padding: 0; list-style: none; }
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; color: inherit; }
button { background: none; border: 0; padding: 0; cursor: pointer; }
img, svg, canvas { display: block; max-width: 100%; }
em, i { font-style: normal; }
::selection { background: var(--blue); color: #fff; }
:focus-visible { outline: 2px solid var(--acc-d2); outline-offset: 3px; border-radius: 4px; }
.mono { font-family: var(--f-mono); letter-spacing: .02em; }
.skip { position: fixed; top: -100px; left: 16px; z-index: 10001; background: var(--white); color: var(--tx-l); padding: 10px 16px; border-radius: 6px; }
.skip:focus { top: 16px; }
.wrap { width: 100%; max-width: var(--max); margin-inline: auto; padding-inline: var(--gut); }
.center { text-align: center; }
.muted { color: var(--mu-l); font-size: 14px; }
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--navy); }
::-webkit-scrollbar-thumb { background: var(--blue-800); border-radius: 2px; border: 2px solid var(--navy); }

/* ---------- Blueprint grids (colors here; grid images at end of file) ---------- */
.bp-dark { background-color: var(--navy); }
.bp-light { background-color: var(--paper); }

/* ---------- Type ---------- */
.eyebrow { display: inline-flex; align-items: center; gap: 10px; font-family: var(--f-mono); font-size: 12.5px; letter-spacing: .06em; color: var(--acc-d); }
.eyebrow .idx { display: inline-flex; align-items: center; height: 22px; padding: 0 7px; border: 1px solid currentColor; border-radius: 3px; font-size: 11px; color: var(--acc-d); opacity: .85; }
.eyebrow-dark { color: var(--blue-700); }
.eyebrow-dark .idx { color: var(--blue); }
.eb-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--mint); box-shadow: 0 0 0 4px rgba(34,196,143,.18); }

.h2 { font-family: var(--f-disp); font-weight: 700; font-size: clamp(38px, 5.2vw, 82px); line-height: 1.06; letter-spacing: -.035em; color: var(--tx-l); margin-top: 22px; }
.h2-light { color: var(--tx-d); }
.h2-mute { font-weight: 400; color: #8a93ab; }
.h2-light .h2-mute { color: var(--mu-d); }
.h3 { font-family: var(--f-disp); font-weight: 700; font-size: clamp(22px, 1.9vw, 30px); line-height: 1.25; letter-spacing: -.02em; }
.h4 { font-family: var(--f-disp); font-weight: 700; font-size: clamp(18px, 1.4vw, 21px); line-height: 1.35; letter-spacing: -.01em; }
.ln { display: block; overflow: hidden; padding-bottom: .06em; margin-bottom: -.06em; }
.ln-in { display: inline-block; will-change: transform; }

/* ---------- Dimension lines (尺寸标注) ---------- */
.dim { position: absolute; pointer-events: none; color: var(--dim-c, var(--acc-d)); font-family: var(--f-mono); font-size: 10.5px; letter-spacing: .08em; }
.dim-h { height: 22px; }
.dim-h .dim-line { position: absolute; left: 0; right: 0; bottom: 5px; height: 1px; background: currentColor; transform-origin: 50% 50%; }
.dim-h .dim-line::before, .dim-h .dim-line::after { content: ""; position: absolute; top: -5px; width: 1px; height: 11px; background: currentColor; }
.dim-h .dim-line::before { left: 0; } .dim-h .dim-line::after { right: 0; }
.dim-h .dim-a { position: absolute; bottom: 2px; width: 0; height: 0; border-top: 3.5px solid transparent; border-bottom: 3.5px solid transparent; }
.dim-h .dim-a:first-of-type { left: 1px; border-right: 8px solid currentColor; }
.dim-h .dim-a:last-of-type { right: 1px; border-left: 8px solid currentColor; }
.dim-h .dim-label { position: absolute; left: 50%; bottom: 9px; transform: translateX(-50%); white-space: nowrap; }
.dim-v { width: 22px; }
.dim-v .dim-line { position: absolute; top: 0; bottom: 0; left: 5px; width: 1px; background: currentColor; transform-origin: 50% 50%; }
.dim-v .dim-line::before, .dim-v .dim-line::after { content: ""; position: absolute; left: -5px; width: 11px; height: 1px; background: currentColor; }
.dim-v .dim-line::before { top: 0; } .dim-v .dim-line::after { bottom: 0; }
.dim-v .dim-a { position: absolute; left: 2px; width: 0; height: 0; border-left: 3.5px solid transparent; border-right: 3.5px solid transparent; }
.dim-v .dim-a:first-of-type { top: 1px; border-bottom: 8px solid currentColor; }
.dim-v .dim-a:last-of-type { bottom: 1px; border-top: 8px solid currentColor; }
.dim-v .dim-label { position: absolute; top: 50%; left: 12px; transform: translateY(-50%); writing-mode: vertical-rl; white-space: nowrap; }

/* corner registration marks */
.cm { --cm: var(--blue); --cs: 10px; --ci: 8px; }
.cm::after {
  content: ""; position: absolute; inset: var(--ci); pointer-events: none; z-index: 2; opacity: .55;
  background:
    linear-gradient(var(--cm), var(--cm)) 0 0 / var(--cs) 1px no-repeat, linear-gradient(var(--cm), var(--cm)) 0 0 / 1px var(--cs) no-repeat,
    linear-gradient(var(--cm), var(--cm)) 100% 0 / var(--cs) 1px no-repeat, linear-gradient(var(--cm), var(--cm)) 100% 0 / 1px var(--cs) no-repeat,
    linear-gradient(var(--cm), var(--cm)) 0 100% / var(--cs) 1px no-repeat, linear-gradient(var(--cm), var(--cm)) 0 100% / 1px var(--cs) no-repeat,
    linear-gradient(var(--cm), var(--cm)) 100% 100% / var(--cs) 1px no-repeat, linear-gradient(var(--cm), var(--cm)) 100% 100% / 1px var(--cs) no-repeat;
  transition: inset .6s var(--ease), opacity .4s;
}
.cm:hover::after { inset: 4px; opacity: 1; }

/* ruler strip */
.ruler { position: relative; height: 30px; overflow: hidden; border-bottom: 1px solid var(--line-l); color: var(--blue); }
.ruler::before {
  content: ""; position: absolute; inset: 0;
  background:
    linear-gradient(90deg, currentColor 1px, transparent 1px) 0 0 / 80px 16px repeat-x,
    linear-gradient(90deg, currentColor 1px, transparent 1px) 40px 0 / 80px 10px repeat-x,
    linear-gradient(90deg, rgba(61,115,221,.55) 1px, transparent 1px) 0 0 / 8px 6px repeat-x;
  opacity: .55;
}
.ruler span { position: absolute; top: 15px; font-family: var(--f-mono); font-size: 9.5px; color: var(--blue-700); opacity: .75; transform: translateX(3px); }

/* ---------- Buttons ---------- */
.btn {
  --b-bg: transparent; --b-tx: currentColor; --b-bd: transparent; --b-fill: var(--blue); --b-ftx: #fff;
  position: relative; isolation: isolate; overflow: hidden;
  display: inline-flex; align-items: center; justify-content: center; gap: 12px;
  height: 52px; padding: 0 24px; border-radius: var(--r-btn);
  font-size: 15px; font-weight: 600; letter-spacing: .01em; white-space: nowrap;
  background: var(--b-bg); color: var(--b-tx); border: 1px solid var(--b-bd);
  transition: color .5s var(--ease), border-color .5s var(--ease);
  -webkit-tap-highlight-color: transparent;
}
.btn::before { content: ""; position: absolute; z-index: -1; inset: -1px; background: var(--b-fill); transform: scaleX(0); transform-origin: 100% 50%; transition: transform .65s var(--ease); }
.btn:hover::before, .btn:focus-visible::before { transform: scaleX(1); transform-origin: 0 50%; }
.btn:hover, .btn:focus-visible { color: var(--b-ftx); border-color: var(--b-fill); }
.btn::after { content: ""; position: absolute; right: 5px; top: 5px; width: 5px; height: 5px; border-top: 1px solid currentColor; border-right: 1px solid currentColor; opacity: .45; transition: transform .5s var(--ease), opacity .3s; }
.btn:hover::after { transform: translate(2px, -2px); opacity: .9; }
.btn-sm { height: 40px; padding: 0 16px; font-size: 14px; }
.btn-lg { height: 62px; padding: 0 30px; font-size: 16.5px; }
.btn-block { width: 100%; }
.btn-ico { position: relative; display: grid; place-items: center; width: 28px; height: 28px; margin-right: -10px; border-radius: 5px; background: rgba(255,255,255,.16); overflow: hidden; }
.btn-ico svg { width: 14px; height: 14px; transition: transform .6s var(--ease); }
.btn:hover .btn-ico svg { transform: translateX(120%); animation: arrowIn .6s var(--ease) .12s forwards; }
@keyframes arrowIn { 0% { transform: translateX(-120%); } 100% { transform: translateX(0); } }
.btn-primary { --b-bg: var(--blue); --b-tx: #fff; --b-bd: var(--blue); --b-fill: #fff; --b-ftx: var(--blue-800); }
.btn-primary:hover .btn-ico { background: rgba(61,115,221,.14); }
.btn-ghost-dark { --b-tx: var(--tx-d); --b-bd: rgba(var(--bl),.35); --b-fill: var(--blue); --b-ftx: #fff; }
.btn-light { --b-bg: #fff; --b-tx: #0a1430; --b-bd: #fff; --b-fill: var(--blue); --b-ftx: #fff; }
.btn-dark { --b-bg: var(--navy-2); --b-tx: #fff; --b-bd: var(--navy-2); --b-fill: var(--blue); --b-ftx: #fff; }
.btn-blue { --b-bg: var(--blue); --b-tx: #fff; --b-bd: var(--blue); --b-fill: var(--navy-2); --b-ftx: #fff; }
.btn-line-dark { --b-tx: var(--tx-l); --b-bd: rgba(10,20,48,.2); --b-fill: var(--navy-2); --b-ftx: #fff; }
.btn-alarm { --b-bg: rgba(255,106,43,.1); --b-tx: #ffb18f; --b-bd: rgba(255,106,43,.45); --b-fill: var(--orange); --b-ftx: #fff; }

.roll { position: relative; display: inline-flex; overflow: hidden; vertical-align: top; line-height: 1.3; }
.roll-a, .roll-b { display: inline-flex; }
.roll-b { position: absolute; left: 0; top: 0; }
.roll .ch { display: inline-block; transition: transform .6s var(--ease); transition-delay: calc(var(--i) * 16ms); white-space: pre; }
.roll-b .ch { transform: translateY(105%); }
a:hover > .roll .roll-a .ch, button:hover > .roll .roll-a .ch,
a:hover > .btn-label > .roll .roll-a .ch, button:hover > .btn-label > .roll .roll-a .ch,
.nav-link:hover .roll-a .ch { transform: translateY(-105%); }
a:hover > .roll .roll-b .ch, button:hover > .roll .roll-b .ch,
a:hover > .btn-label > .roll .roll-b .ch, button:hover > .btn-label > .roll .roll-b .ch,
.nav-link:hover .roll-b .ch { transform: translateY(0); }

.chip-btn { height: 36px; padding: 0 14px; border-radius: 6px; font-size: 13px; font-weight: 600; border: 1px solid rgba(10,20,48,.18); color: var(--tx-l); transition: background .4s var(--ease), color .4s var(--ease), border-color .4s var(--ease); }
.chip-btn:hover { border-color: var(--blue); color: var(--blue-700); }
.chip-btn-dark { background: var(--navy-2); color: #fff; border-color: var(--navy-2); }
.chip-btn-dark:hover { background: var(--blue); border-color: var(--blue); color: #fff; }
.chip-btn-vio { background: var(--blue); color: #fff; border-color: var(--blue); height: 32px; }
.chip-btn-vio:hover { background: var(--navy-2); border-color: var(--navy-2); color: #fff; }

.pill { display: inline-flex; align-items: center; height: 26px; padding: 0 10px; border-radius: 4px; font-size: 12px; font-weight: 600; background: var(--blue-100); color: var(--blue-700); }
.pill-dark { background: rgba(var(--bl),.14); color: var(--blue-200); }

.pulse { position: relative; display: inline-block; width: 7px; height: 7px; border-radius: 50%; background: var(--mint); }
.pulse::after { content: ""; position: absolute; inset: -4px; border-radius: 50%; border: 1px solid var(--mint); animation: pulse 1.8s var(--ease-o) infinite; }
@keyframes pulse { 0% { transform: scale(.4); opacity: 1; } 100% { transform: scale(1.8); opacity: 0; } }

/* ==========================================================================
   Global layers
   ========================================================================== */
.gl { position: fixed; inset: 0; width: 100%; height: 100%; z-index: 0; pointer-events: none; }
.gl.gl-foot { z-index: 4; }
.grain { position: fixed; inset: -100px; z-index: 9990; pointer-events: none; background: url("../img/noise.png"); opacity: .04; mix-blend-mode: overlay; animation: grain 1.2s steps(6) infinite; }
@keyframes grain { 0% { transform: translate(0,0); } 20% { transform: translate(-30px,20px); } 40% { transform: translate(20px,-40px); } 60% { transform: translate(-50px,-10px); } 80% { transform: translate(40px,30px); } 100% { transform: translate(0,0); } }
.progress { position: fixed; left: 0; top: 0; right: 0; height: 2px; z-index: 120; pointer-events: none; }
.progress i { display: block; height: 100%; background: var(--blue); transform-origin: 0 50%; transform: scaleX(0); box-shadow: 0 0 10px rgba(61,115,221,.8); }

/* crosshair cursor removed */

/* toasts */
.toasts { position: fixed; left: 50%; bottom: 28px; transform: translateX(-50%); z-index: 9000; display: grid; gap: 10px; justify-items: center; pointer-events: none; width: min(92vw, 520px); }
.toast { display: flex; align-items: center; gap: 12px; padding: 14px 20px 14px 14px; border-radius: 10px; background: rgba(var(--nv2),.94); color: var(--tx-d); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); border: 1px solid var(--line-d); box-shadow: 0 20px 50px -10px rgba(3,10,30,.5); font-size: 14px; line-height: 1.5; pointer-events: auto; }
.toast-ico { flex: none; width: 30px; height: 30px; border-radius: 6px; display: grid; place-items: center; background: rgba(34,196,143,.16); color: var(--mint); }
.toast-ico svg { width: 15px; height: 15px; }
.toast b { display: block; font-weight: 600; }
.toast small { color: var(--mu-d); font-size: 12.5px; }

/* ==========================================================================
   Preloader
   ========================================================================== */
.preloader { position: fixed; inset: 0; z-index: 9500; color: var(--tx-d); background: #071230; display: none; }
.anim .preloader { display: block; }
.pl-grid { position: absolute; inset: 0; opacity: .9; mask-image: radial-gradient(circle at 50% 50%, #000 0, transparent 70%); -webkit-mask-image: radial-gradient(circle at 50% 50%, #000 0, transparent 70%); }
.pl-center { position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%); display: grid; justify-items: center; gap: 22px; }
.pl-mark { width: 72px; height: 72px; color: var(--acc-d); overflow: visible; }
.pl-ring { stroke-dasharray: 96; stroke-dashoffset: 96; transform-origin: center; }
.pl-bolt { opacity: 0; transform-origin: center; }
.pl-cross { stroke-dasharray: 4 3; opacity: .5; }
.pl-label { display: grid; justify-items: center; gap: 6px; font-size: 12px; color: var(--mu-d); text-align: center; }
.pl-label span:first-child { letter-spacing: .3em; color: var(--tx-d); }
.pl-foot { position: absolute; left: var(--gut); right: var(--gut); bottom: 40px; display: flex; justify-content: space-between; align-items: flex-end; font-size: 12px; color: var(--mu-d); }
.pl-num { font-size: clamp(56px, 9vw, 128px); line-height: .8; color: var(--tx-d); letter-spacing: -.04em; font-weight: 500; }
.pl-num b { font-weight: 500; }
.pl-bar { position: absolute; left: 0; right: 0; bottom: 0; height: 2px; background: var(--line-d); }
.pl-bar i { display: block; height: 100%; background: var(--blue); transform-origin: 0 50%; transform: scaleX(0); }

/* ==========================================================================
   Nav
   ========================================================================== */
.nav {
  --n-tx: var(--tx-d); --n-mu: var(--mu-d); --n-bg: rgba(var(--nv),.62); --n-line: var(--line-d); --n-menu: rgba(var(--nv2),.96); --n-menu-tx: var(--tx-d);
  position: fixed; top: 0; left: 0; right: 0; z-index: 100; height: var(--nav-h); color: var(--n-tx);
  transition: top .35s var(--ease), transform .7s var(--ease), color .5s var(--ease);
}
.nav::before { content: ""; position: absolute; inset: 0; z-index: -1; background: var(--n-bg); backdrop-filter: blur(18px) saturate(1.4); -webkit-backdrop-filter: blur(18px) saturate(1.4); border-bottom: 1px solid var(--n-line); opacity: 0; transition: opacity .5s var(--ease), background .5s var(--ease); }
.nav.is-scrolled::before { opacity: 1; }
.nav.is-hidden { transform: translateY(-100%); }
.nav.on-cover { transform: translateY(-100%); pointer-events: none; }
.nav[data-nav-theme="light"] { --n-tx: var(--tx-l); --n-mu: var(--mu-l); --n-bg: rgba(242,244,248,.8); --n-line: var(--line-l); --n-menu: rgba(255,255,255,.97); --n-menu-tx: var(--tx-l); }
.nav-inner { height: 100%; max-width: var(--max); margin: 0 auto; padding: 0 var(--gut); display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 10px; justify-self: start; }
.brand-mark {
  width: 32px;
  height: 32px;
  border-radius: 7px;
  object-fit: cover;
  box-shadow: 0 4px 12px -2px rgba(61, 115, 221, .38), 0 0 0 1px rgba(var(--bl), .18);
  flex-shrink: 0;
  transition: transform .25s ease, box-shadow .25s ease;
}
.brand:hover .brand-mark {
  transform: scale(1.05);
  box-shadow: 0 6px 16px -2px rgba(61, 115, 221, .48), 0 0 0 1px rgba(var(--bl), .32);
}
.bm-bg { fill: var(--blue); transition: fill .5s; }
.bm-fg { fill: #fff; }
.brand-name { font-family: var(--f-disp); font-weight: 700; font-size: 19px; letter-spacing: -.02em; }
.brand-tag { font-size: 13px; color: var(--n-mu); border: 1px solid var(--n-line); border-radius: 3px; padding: 2px 7px; white-space: nowrap; }
.nav-links { display: flex; align-items: center; gap: 2px; font-size: 14.5px; }
.nav-item { position: relative; }
.nav-link { position: relative; display: inline-flex; align-items: center; gap: 4px; height: 40px; padding: 0 13px; color: var(--n-tx); opacity: .78; transition: opacity .3s; }
.nav-link::after { content: ""; position: absolute; left: 13px; right: 13px; bottom: 6px; height: 1px; background: var(--acc-d2); transform: scaleX(0); transform-origin: 100% 50%; transition: transform .5s var(--ease); }
.nav-link:hover::after, .nav-item.is-open .nav-link::after { transform: scaleX(1); transform-origin: 0 50%; }
.nav-link:hover, .nav-item.is-open .nav-link { opacity: 1; }
.chev { width: 12px; height: 12px; transition: transform .5s var(--ease); }
.nav-item:hover .chev, .nav-item.is-open .chev { transform: rotate(180deg); }
.menu { position: absolute; top: 100%; left: -6px; padding-top: 14px; visibility: hidden; opacity: 0; transform: translateY(6px); transition: opacity .35s var(--ease), transform .5s var(--ease), visibility 0s .35s; }
.nav-item:hover .menu, .nav-item.is-open .menu, .nav-item:focus-within .menu { visibility: visible; opacity: 1; transform: none; transition-delay: 0s; }
.menu-panel { width: 280px; padding: 8px; border-radius: 10px; background: var(--n-menu); color: var(--n-menu-tx); border: 1px solid var(--n-line); box-shadow: 0 30px 60px -20px rgba(3,10,30,.45); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); }
.menu-title { font-size: 11px; color: var(--n-mu); padding: 8px 12px 6px; letter-spacing: .14em; border-bottom: 1px dashed var(--n-line); margin-bottom: 4px; }
.menu-link { display: flex; align-items: center; justify-content: space-between; padding: 10px 12px; border-radius: 6px; font-size: 14px; color: var(--n-mu); transition: background .3s, color .3s, padding .4s var(--ease); }
.menu-link i { font-family: var(--f-mono); font-size: 11px; opacity: .6; }
.menu-link.is-strong { color: var(--n-menu-tx); font-weight: 600; }
.menu-link:hover { background: rgba(61,115,221,.14); color: var(--n-menu-tx); padding-left: 16px; }
.nav-actions { justify-self: end; display: flex; align-items: center; gap: 8px; }
.nav-mine { display: inline-flex; align-items: center; gap: 7px; height: 40px; padding: 0 12px; font-size: 14px; color: var(--n-tx); opacity: .78; transition: opacity .3s; }
.nav-mine:hover { opacity: 1; }
.nav-mine svg { width: 17px; height: 17px; }
.count { display: inline-grid; place-items: center; min-width: 18px; height: 18px; padding: 0 5px; border-radius: 4px; background: var(--blue); color: #fff; font-size: 11px; font-weight: 600; font-family: var(--f-mono); }
.nav .btn-line { --b-tx: var(--n-tx); --b-bd: rgba(var(--bl),.35); --b-fill: var(--blue); --b-ftx: #fff; }
.nav[data-nav-theme="light"] .btn-line { --b-bd: rgba(10,20,48,.2); --b-fill: var(--blue); --b-ftx: #fff; }
.burger { display: none; width: 44px; height: 44px; border-radius: 8px; position: relative; border: 1px solid var(--n-line); }
.burger span { position: absolute; left: 13px; right: 13px; height: 1.5px; background: currentColor; transition: transform .6s var(--ease), top .6s var(--ease); }
.burger span:first-child { top: 18px; }
.burger span:last-child { top: 25px; }
.menu-open .burger span:first-child { top: 21px; transform: rotate(45deg); }
.menu-open .burger span:last-child { top: 21px; transform: rotate(-45deg); }
.mnav { 
  position: fixed; 
  inset: 0; 
  z-index: 90; 
  color: var(--tx-d); 
  display: flex; 
  flex-direction: column; 
  justify-content: flex-start;
  gap: 24px;
  padding: calc(var(--nav-h) + 16px + env(safe-area-inset-top, 0px)) var(--gut) calc(36px + env(safe-area-inset-bottom, 0px)); 
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior: contain;
  clip-path: inset(0 0 100% 0); 
  visibility: hidden; 
  transition: clip-path .9s var(--ease-io), visibility 0s .9s; 
}
.menu-open .mnav { clip-path: inset(0 0 0 0); visibility: visible; transition-delay: 0s; }
.mnav-head { display: none; } /* 仅移动端（≤900px，菜单覆盖顶栏时）显示，见 mobile.css */
.mnav-links { display: grid; width: 100%; }
.mnav-links a { 
  display: flex; 
  align-items: baseline; 
  gap: 14px; 
  padding: 11px 0; 
  border-bottom: 1px solid var(--line-d); 
  font-family: var(--f-disp); 
  font-weight: 700; 
  font-size: clamp(20px, 5.5vw, 34px); 
  letter-spacing: -.02em; 
  opacity: 0; 
  transform: translateY(24px); 
  transition: opacity .6s var(--ease), transform .8s var(--ease), color .2s ease; 
}
.mnav-links a:active { color: var(--blue); }
.mnav-links a i { font-size: 12px; color: var(--acc-d); font-weight: 400; }
.menu-open .mnav-links a { opacity: 1; transform: none; }
.menu-open .mnav-links a:nth-child(1) { transition-delay: .2s; }
.menu-open .mnav-links a:nth-child(2) { transition-delay: .25s; }
.menu-open .mnav-links a:nth-child(3) { transition-delay: .3s; }
.menu-open .mnav-links a:nth-child(4) { transition-delay: .35s; }
.menu-open .mnav-links a:nth-child(5) { transition-delay: .4s; }
.menu-open .mnav-links a:nth-child(6) { transition-delay: .45s; }
.menu-open .mnav-links a:nth-child(7) { transition-delay: .5s; }
.menu-open .mnav-links a:nth-child(8) { transition-delay: .55s; }
.menu-open .mnav-links a:nth-child(9) { transition-delay: .6s; }
.mnav-foot { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; padding-top: 10px; }

/* ==========================================================================
   Hero
   ========================================================================== */
.hero { position: relative; z-index: 2; min-height: 100vh; min-height: 100svh; display: flex; flex-direction: column; padding: calc(var(--nav-h) + clamp(36px, 6vh, 72px)) 0 clamp(36px, 5vh, 56px); }
.hero::before { content: ""; position: absolute; inset: 0; z-index: -1; pointer-events: none; background: radial-gradient(60% 55% at 74% 46%, rgba(61,115,221,.26), transparent 70%), radial-gradient(40% 40% at 8% 100%, rgba(61,115,221,.16), transparent 70%); }
.hero-wrap { position: relative; flex: 1; display: flex; flex-direction: column; }
.hero-eyebrow { color: var(--tx-d); font-size: 13px; }
.hero-titlebox { position: relative; margin-top: auto; padding-top: clamp(36px, 7.5vh, 76px); width: fit-content; }
.hero-title { font-family: var(--f-disp); font-weight: 700; color: var(--tx-d); font-size: clamp(64px, 10.4vw, 174px); line-height: .98; letter-spacing: -.045em; }
.hero-stop { color: var(--blue); }
.hero-titlebox .dim-h { left: 0; right: .2em; top: calc(clamp(36px, 7.5vh, 76px) - 30px); }
.hero-titlebox .dim-v { right: -40px; top: clamp(36px, 7.5vh, 76px); bottom: 0; }
.hero-sub { margin-top: clamp(14px, 2vh, 24px); font-family: var(--f-disp); font-weight: 400; font-size: clamp(20px, 2.3vw, 36px); letter-spacing: -.02em; color: var(--mu-d); }
.hero-sub em { color: var(--acc-d); font-weight: 700; }
.hero-foot { margin-top: clamp(24px, 4.2vh, 48px); padding-top: clamp(20px, 2.6vh, 28px); border-top: 1px solid var(--line-d); display: grid; grid-template-columns: repeat(12, 1fr); gap: 24px; align-items: end; }
.hero-copy { grid-column: 1 / span 5; }
.hero-desc { color: var(--tx-d2); font-size: 15.5px; line-height: 1.75; max-width: 520px; }
.hero-ctas { display: flex; flex-wrap: wrap; gap: 18px; margin-top: 26px; }
/* stats as a drawing title block (图签) */
.hero-stats { grid-column: 7 / span 6; display: grid; grid-template-columns: repeat(4, 1fr); border: 1px solid var(--line-d); background: rgba(var(--nv),.55); backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px); }
.stat { position: relative; padding: 26px 16px 14px; border-left: 1px solid var(--line-d); }
.stat:first-child { border-left: 0; }
.stat::before { content: attr(data-k); position: absolute; left: 8px; top: 6px; font-family: var(--f-mono); font-size: 9px; letter-spacing: .12em; color: var(--acc-d2); }
.stat dt { font-size: 12px; color: var(--mu-d); }
.stat dd { margin-top: 4px; display: flex; align-items: baseline; gap: 2px; font-family: var(--f-disp); }
.stat dd b { font-size: clamp(26px, 2.4vw, 40px); font-weight: 600; letter-spacing: -.04em; line-height: 1; font-variant-numeric: tabular-nums; }
.stat dd small { font-size: 14px; color: var(--acc-d); font-weight: 500; }

.hero-hud { position: absolute; inset: 0; pointer-events: none; z-index: 1; }
.dwg-frame { position: absolute; left: 14px; right: 14px; top: calc(var(--nav-h) + 6px); bottom: 14px; border: 1px solid rgba(var(--bl),.18); }
.dwg-frame::before { content: ""; position: absolute; inset: 14px; border: 1px solid rgba(var(--bl),.1); }
.zones-x { position: absolute; left: 0; right: 0; top: 0; height: 14px; display: flex; }
.zones-x.b { top: auto; bottom: 0; }
.zones-x span { flex: 1; display: grid; place-items: center; font-family: var(--f-mono); font-size: 8.5px; color: var(--acc-d2); opacity: .7; border-left: 1px solid rgba(var(--bl),.18); }
.zones-x span:first-child { border-left: 0; }
.zones-y { position: absolute; top: 0; bottom: 0; left: 0; width: 14px; display: flex; flex-direction: column; }
.zones-y.r { left: auto; right: 0; }
.zones-y span { flex: 1; display: grid; place-items: center; font-family: var(--f-mono); font-size: 8.5px; color: var(--acc-d2); opacity: .7; border-top: 1px solid rgba(var(--bl),.18); }
.zones-y span:first-child { border-top: 0; }
.hud { position: absolute; font-size: 11px; color: var(--mu-d); letter-spacing: .08em; }
.hud-station { right: calc(var(--gut) + 4px); top: calc(var(--nav-h) + clamp(36px, 6vh, 72px)); display: grid; justify-items: end; gap: 2px; }
.hud-k { color: var(--acc-d2); }
.hud-v { color: var(--tx-d); }
.hud-joints { right: calc(var(--gut) + 4px); top: 38%; display: grid; gap: 0; border: 1px solid var(--line-d); background: rgba(var(--nv),.5); }
.hud-joints li { display: flex; gap: 14px; justify-content: space-between; padding: 5px 10px; border-top: 1px solid var(--line-d); }
.hud-joints li:first-child { border-top: 0; }
.hud-joints span { color: var(--acc-d2); }
.hud-joints b { color: var(--tx-d); font-weight: 400; font-variant-numeric: tabular-nums; min-width: 88px; text-align: right; }
.hud-live { right: calc(var(--gut) + 4px); top: calc(var(--nav-h) + clamp(36px, 6vh, 72px) + 48px); display: flex; align-items: center; gap: 8px; color: var(--tx-d); }
.hud-live b { color: var(--mint); font-weight: 500; }
.scroll-hint { position: absolute; right: 30px; bottom: 40px; z-index: 2; display: grid; justify-items: center; gap: 10px; font-size: 10px; letter-spacing: .3em; color: var(--acc-d); writing-mode: vertical-rl; }
.scroll-hint span { transform: rotate(180deg); }
.scroll-hint i { width: 1px; height: 40px; background: linear-gradient(var(--acc-d), transparent); transform-origin: top; animation: hint 2.2s var(--ease-io) infinite; }
@keyframes hint { 0% { transform: scaleY(0); } 45% { transform: scaleY(1); transform-origin: top; } 55% { transform: scaleY(1); transform-origin: bottom; } 100% { transform: scaleY(0); transform-origin: bottom; } }

/* ==========================================================================
   Practice loop
   ========================================================================== */
.loop { position: relative; z-index: 2; }
.loop-pin { height: 100vh; height: 100svh; display: flex; align-items: center; }
.loop-grid { display: grid; grid-template-columns: repeat(12, 1fr); gap: 24px; align-items: center; height: 100%; padding-top: var(--nav-h); }
.loop-left { grid-column: 1 / span 5; }
.loop-num { display: flex; align-items: flex-start; gap: 10px; margin-top: 28px; line-height: 1; }
.loop-num-mask { display: block; height: 1em; overflow: hidden; font-family: var(--f-sans); font-size: clamp(88px, 11vw, 176px); font-weight: 300; letter-spacing: -.06em; }
.loop-num-track { display: grid; }
.loop-num-track span { display: block; height: 1em; line-height: 1; color: transparent; -webkit-text-stroke: 1px rgba(var(--bl),.6); }
.loop-num-total { font-size: 14px; color: var(--acc-d2); padding-top: .6em; }
.loop-steps { position: relative; margin-top: 28px; min-height: 250px; }
.loop-step { position: absolute; inset: 0 0 auto 0; }
.loop-kicker { font-size: 12.5px; color: var(--acc-d); letter-spacing: .04em; }
.loop-title { margin-top: 12px; font-family: var(--f-disp); font-weight: 700; font-size: clamp(44px, 5.4vw, 88px); line-height: 1.02; letter-spacing: -.04em; color: var(--tx-d); }
.loop-desc { margin-top: 18px; max-width: 470px; color: var(--tx-d2); font-size: 15.5px; line-height: 1.8; }
.loop-progress { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; margin-top: 24px; max-width: 470px; border: 1px solid var(--line-d); }
.loop-progress li { display: grid; gap: 8px; padding: 10px 10px 8px; border-left: 1px solid var(--line-d); cursor: pointer; user-select: none; transition: background .2s; }
.loop-progress li:hover { background: rgba(255,255,255,.05); }
.loop-progress li:hover span { color: var(--tx-d); }
.loop-progress li:first-child { border-left: 0; }
.loop-progress i { height: 2px; background: var(--line-d); position: relative; overflow: hidden; }
.loop-progress i::after { content: ""; position: absolute; inset: 0; background: var(--acc-d2); transform-origin: 0 50%; transform: scaleX(var(--p, 0)); }
.loop-progress span { font-size: 11.5px; color: var(--mu-d); transition: color .4s; }
.loop-progress li.on span { color: var(--tx-d); }
.loop-right { grid-column: 6 / span 7; position: relative; height: min(76vh, 680px); }

.hcard { position: absolute; width: 300px; padding: 16px 18px 18px; border-radius: 8px; background: rgba(var(--nv2),.7); border: 1px solid rgba(var(--bl),.24); backdrop-filter: blur(14px) saturate(1.3); -webkit-backdrop-filter: blur(14px) saturate(1.3); box-shadow: var(--hcard-shadow); color: var(--tx-d); font-size: 13px; opacity: 0; visibility: hidden; }
.hcard::before { content: ""; position: absolute; width: var(--ll, 70px); height: 1px; background: linear-gradient(90deg, var(--acc-d), transparent); transform-origin: 0 50%; transform: rotate(var(--la, 160deg)); left: var(--lx, 0); top: var(--ly, 50%); }
.hcard::after { content: ""; position: absolute; width: 7px; height: 7px; border: 1px solid var(--acc-d); border-radius: 50%; left: calc(var(--lx, 0px) - 3px); top: calc(var(--ly, 50%) - 3px); background: var(--navy); }
.hcard-head { display: flex; justify-content: space-between; align-items: center; gap: 10px; font-size: 11px; color: var(--mu-d); padding-bottom: 10px; border-bottom: 1px dashed var(--line-d); }
.hcard-head span:first-child { display: inline-flex; align-items: center; gap: 6px; }
.hcard .ok { color: var(--mint); }
.ico-bolt { width: 8px; height: 12px; background: var(--acc-d); clip-path: polygon(60% 0, 0 60%, 45% 60%, 35% 100%, 100% 38%, 55% 38%); }
.hcard-volt { right: 2%; top: 12%; --lx: 0px; --ly: 70%; --la: 155deg; --ll: 90px; }
.volt-read { margin-top: 12px; display: flex; align-items: baseline; gap: 6px; font-family: var(--f-disp); line-height: 1; }
.volt-v { color: var(--acc-d2); font-size: 22px; font-weight: 600; }
.volt-read b { font-size: 54px; font-weight: 600; letter-spacing: -.05em; font-variant-numeric: tabular-nums; }
.volt-dec { font-size: 28px; color: var(--mu-d); }
.volt-chips { display: flex; gap: 6px; margin-top: 14px; }
.volt-chips span { padding: 3px 10px; border-radius: 4px; border: 1px solid var(--line-d); font-size: 11px; color: var(--mu-d); }
.volt-chips .on { background: var(--blue); border-color: var(--blue); color: #fff; }
.volt-meter { margin-top: 14px; height: 4px; background: var(--line-d); overflow: hidden; }
.volt-meter i { display: block; height: 100%; width: 86%; background: linear-gradient(90deg, var(--mint), var(--acc-d), var(--blue)); animation: meter 2.4s var(--ease-io) infinite alternate; transform-origin: left; }
@keyframes meter { from { transform: scaleX(.82); } to { transform: scaleX(1); } }
.hcard-alert { left: 4%; bottom: 14%; width: 330px; background: rgba(48,20,10,.62); border-color: rgba(255,106,43,.45); --lx: 100%; --ly: 20%; --la: -30deg; --ll: 80px; }
.hcard-alert::before { background: linear-gradient(90deg, var(--orange), transparent); }
.hcard-alert::after { border-color: var(--orange); }
.hcard-alert .hcard-head { color: #ffb18f; border-bottom-color: rgba(255,106,43,.3); }
.alert-text { margin-top: 10px; color: #ffe0d2; font-size: 14px; line-height: 1.6; }
.alert-meta { display: flex; justify-content: space-between; margin-top: 12px; padding-top: 10px; border-top: 1px solid rgba(255,106,43,.25); font-size: 11px; color: #d39b80; }
.alert-meta b { color: #fff; font-weight: 500; }
.alert-meta .bad { color: var(--orange); }
.hcard-lesson { right: 4%; bottom: 16%; width: 320px; --lx: 0px; --ly: 15%; --la: -150deg; --ll: 80px; }
.lesson-title { margin-top: 10px; font-family: var(--f-disp); font-weight: 700; font-size: 17px; line-height: 1.35; }
.lesson-sub { margin-top: 6px; font-size: 12.5px; color: var(--mu-d); line-height: 1.6; }
.lesson-bar { position: relative; margin-top: 14px; height: 4px; background: var(--line-d); }
.lesson-bar i { position: absolute; left: 0; top: 0; bottom: 0; width: 41%; background: var(--blue); }
.lesson-bar i::after { content: ""; position: absolute; right: -6px; top: -4px; width: 12px; height: 12px; border-radius: 2px; background: #fff; box-shadow: 0 0 0 4px rgba(61,115,221,.4); transform: rotate(45deg); }
.lesson-bar span { position: absolute; right: 0; top: 10px; font-size: 11px; color: var(--mu-d); }
.hcard-badge { left: 6%; top: 14%; width: 320px; display: flex; gap: 14px; align-items: center; --lx: 100%; --ly: 80%; --la: 25deg; --ll: 90px; }
.hcard-badge .hcard-head { border-bottom: 0; padding-bottom: 0; }
.badge-ico { flex: none; width: 58px; height: 58px; color: var(--acc-d); filter: drop-shadow(0 0 16px rgba(61,115,221,.7)); }
.badge-name { margin-top: 4px; font-family: var(--f-disp); font-weight: 700; font-size: 18px; }
.badge-score { margin-top: 4px; font-size: 11.5px; color: var(--mu-d); }
.badge-score b { color: var(--mint); font-weight: 500; }

/* ==========================================================================
   Sheets (light drafting paper)
   ========================================================================== */
.sheet { position: relative; z-index: 3; color: var(--tx-l); border-radius: 4px; box-shadow: var(--sheet-shadow); }
.section { padding: clamp(88px, 10vw, 160px) 0 0; }
.sec-head { margin-bottom: clamp(48px, 6vw, 88px); position: relative; }
.sec-head-center { text-align: center; display: grid; justify-items: center; }
.sec-head-row { display: flex; justify-content: space-between; align-items: flex-end; gap: 40px; flex-wrap: wrap; }
.sec-aside { max-width: 400px; color: var(--mu-l); font-size: 15px; line-height: 1.8; padding-bottom: 8px; }
.sheet-tag { position: absolute; right: var(--gut); top: 44px; font-family: var(--f-mono); font-size: 10.5px; letter-spacing: .14em; color: var(--blue-700); opacity: .8; }

/* logos (Tri-Track Parallel Rail) */
.logos { padding: clamp(40px, 5vw, 64px) 0 clamp(8px, 2vw, 24px); }
.logos-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 24px; }
.logos-note { font-size: 11.5px; color: var(--mu-l); letter-spacing: .12em; }
.marquee { overflow: hidden; mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent); -webkit-mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent); border-block: 1px solid var(--line-l); background: rgba(255,255,255,.55); }
.marquee-track { display: flex; width: max-content; will-change: transform; }
.marquee-list { display: flex; flex: none; }
.marquee-list li { display: flex; align-items: center; gap: 14px; padding: 28px clamp(28px, 4vw, 56px); font-family: var(--f-disp); font-weight: 700; font-size: clamp(18px, 1.8vw, 26px); letter-spacing: -.02em; color: #8f98b0; white-space: nowrap; transition: color .4s; border-right: 1px dashed var(--line-l); }
.marquee-list li:hover { color: var(--blue-700); }
.marquee-list svg { width: 28px; height: 28px; color: var(--blue); opacity: .8; }

/* Tri-Track Parallel Rail Component */
.partners-tri-rail {
  border-block: 1px solid var(--line-l);
  background: rgba(255, 255, 255, 0.45);
  box-shadow: 0 16px 36px -24px rgba(29, 63, 135, 0.12);
}
.partner-rail-row {
  display: flex;
  align-items: stretch;
  border-bottom: 1px solid var(--line-l);
  position: relative;
}
.partner-rail-row:last-child {
  border-bottom: none;
}
.rail-tag {
  flex: 0 0 248px;
  width: 248px;
  min-width: 248px;
  max-width: 248px;
  box-sizing: border-box;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 22px;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-right: 1px solid var(--line-l);
  position: relative;
  z-index: 2;
  box-shadow: 4px 0 16px -6px rgba(29, 63, 135, 0.08);
}
.rail-tag-idx {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .08em;
  color: var(--blue);
  padding: 2px 6px;
  border: 1px solid rgba(61, 115, 221, 0.35);
  border-radius: 3px;
  background: rgba(61, 115, 221, 0.06);
  flex-shrink: 0;
}
.rail-tag-info {
  display: flex;
  flex-direction: column;
  min-width: 0;
}
.rail-tag-name {
  font-family: var(--f-disp);
  font-weight: 700;
  font-size: clamp(14px, 1.15vw, 16.5px);
  color: var(--tx-l);
  white-space: nowrap;
  letter-spacing: -.01em;
  line-height: 1.25;
}
.rail-tag-badge {
  margin-left: auto;
  font-size: 10px;
  padding: 1px 6px;
  border-radius: 10px;
  background: rgba(61, 115, 221, 0.1);
  color: var(--blue-700);
  font-weight: 600;
  flex-shrink: 0;
}
.partner-rail-row .rail-marquee {
  flex: 1;
  min-width: 0;
  border-block: none;
  background: transparent;
  mask-image: linear-gradient(90deg, transparent, #000 3%, #000 97%, transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 3%, #000 97%, transparent);
}
.partner-rail-row .marquee-list li {
  padding: 14px clamp(16px, 2vw, 32px);
  font-size: clamp(14px, 1.2vw, 17px);
  letter-spacing: -.015em;
  color: #7b859e;
  gap: 10px;
  border-right: 1px dashed var(--line-l);
  transition: color .3s, background-color .3s;
}
.partner-rail-row .marquee-list li:hover {
  color: var(--blue-700);
  background: rgba(61, 115, 221, 0.04);
}
.partner-rail-row .marquee-list svg {
  width: 20px;
  height: 20px;
  color: var(--blue);
  opacity: .85;
  flex-shrink: 0;
}
.marquee.is-static,
.partner-rail-row .rail-marquee.is-static {
  mask-image: none !important;
  -webkit-mask-image: none !important;
}
.marquee.is-static .marquee-track {
  transform: none !important;
  will-change: auto;
}
.partner-rail-row .rail-marquee.is-static .marquee-list li:last-child {
  border-right: none;
}

/* Scheme B: Eco Cards (行业与生态伙伴展台) */
.partner-eco-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 20px;
}
.eco-card {
  --mx: 50%; --my: 50%;
  position: relative;
  overflow: hidden;
  isolation: isolate;
  border-radius: var(--r-md);
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--line-l);
  padding: 20px 22px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 14px;
  transition: border-color .4s var(--ease), box-shadow .4s var(--ease), transform .35s var(--ease);
  box-shadow: 0 4px 18px -6px rgba(29, 63, 135, 0.06);
}
.eco-card::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: 0;
  transition: opacity .4s;
  background: radial-gradient(320px circle at var(--mx) var(--my), rgba(61, 115, 221, 0.12), transparent 65%);
}
.eco-card:hover::before {
  opacity: 1;
}
.eco-card:hover {
  transform: translateY(-3px);
  border-color: rgba(61, 115, 221, 0.38);
  box-shadow: 0 16px 36px -12px rgba(29, 63, 135, 0.12);
}
.eco-card-top {
  display: flex;
  align-items: center;
  gap: 10px;
}
.eco-card-idx {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .08em;
  color: var(--blue);
  padding: 2px 7px;
  border: 1px solid rgba(61, 115, 221, 0.35);
  border-radius: 4px;
  background: rgba(61, 115, 221, 0.06);
  flex-shrink: 0;
}
.eco-card-pill {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--blue);
  padding: 2px 8px;
  border: 1px solid rgba(61, 115, 221, 0.3);
  border-radius: 4px;
  background: rgba(61, 115, 221, 0.06);
}
.eco-card-tag {
  margin-left: auto;
  font-size: 10.5px;
  font-weight: 600;
  color: #64748b;
  background: rgba(0, 0, 0, 0.04);
  padding: 2px 8px;
  border-radius: 10px;
  letter-spacing: .02em;
  border: 1px solid rgba(0, 0, 0, 0.05);
}
.eco-card-body {
  display: flex;
  align-items: center;
  gap: 12px;
}
.eco-card-ico-box {
  width: 40px;
  height: 40px;
  border-radius: 9px;
  background: linear-gradient(135deg, rgba(61, 115, 221, 0.1), rgba(61, 115, 221, 0.04));
  border: 1px solid rgba(61, 115, 221, 0.22);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--blue);
  transition: transform .3s var(--ease), background .3s;
}
.eco-card:hover .eco-card-ico-box {
  transform: scale(1.06);
  background: linear-gradient(135deg, rgba(61, 115, 221, 0.18), rgba(61, 115, 221, 0.08));
}
.eco-card-ico-box svg {
  width: 22px;
  height: 22px;
}
.eco-card-title {
  font-family: var(--f-disp);
  font-weight: 700;
  font-size: clamp(15.5px, 1.2vw, 17.5px);
  color: var(--tx-l);
  line-height: 1.35;
  letter-spacing: -.015em;
  margin: 0;
}
.eco-card-desc {
  font-size: 12.5px;
  color: #7b859e;
  line-height: 1.5;
  margin: 0;
  border-top: 1px dashed var(--line-l);
  padding-top: 10px;
}

/* Boxed School Rail in Scheme B */
.partner-school-rail {
  border: 1px solid var(--line-l);
  border-radius: var(--r-md);
  background: rgba(255, 255, 255, 0.65);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 8px 24px -12px rgba(29, 63, 135, 0.08);
  overflow: hidden;
}
.partner-school-rail .partner-rail-row {
  border-bottom: none;
}
.partner-school-rail .rail-tag {
  background: rgba(255, 255, 255, 0.95);
}

@media (max-width: 768px) {
  .partner-eco-cards {
    grid-template-columns: 1fr;
    gap: 12px;
    margin-bottom: 14px;
  }
  .eco-card {
    padding: 16px 18px;
    gap: 10px;
  }
  .eco-card-title {
    font-size: 15px;
  }
  .eco-card-desc {
    font-size: 12px;
    padding-top: 8px;
  }
  .partner-rail-row {
    flex-direction: column;
  }
  .rail-tag {
    flex: none;
    width: 100%;
    min-width: 0;
    max-width: 100%;
    border-right: none;
    border-bottom: 1px dashed var(--line-l);
    padding: 8px 16px;
    box-shadow: none;
  }
  .partner-rail-row .marquee-list li {
    padding: 11px 16px;
    font-size: 13.5px;
  }
  .partner-rail-row .marquee-list svg {
    width: 17px;
    height: 17px;
  }
}

/* ==========================================================================
   Bento
   ========================================================================== */
.bento { display: grid; grid-template-columns: repeat(12, 1fr); gap: 14px; }
.bcard {
  --mx: 50%; --my: 50%;
  position: relative; overflow: hidden; isolation: isolate;
  border-radius: var(--r-lg); background: var(--white); border: 1px solid var(--line-l);
  padding: clamp(26px, 2.6vw, 40px);
  display: flex; flex-direction: column; justify-content: space-between; gap: 28px;
  transition: border-color .5s var(--ease), box-shadow .6s var(--ease);
}
.bcard::before { content: ""; position: absolute; inset: 0; z-index: -1; pointer-events: none; opacity: 0; transition: opacity .5s; background: radial-gradient(420px circle at var(--mx) var(--my), rgba(61,115,221,.1), transparent 60%); }
.bcard:hover::before { opacity: 1; }
.bcard:hover { border-color: rgba(61,115,221,.4); box-shadow: 0 30px 60px -34px rgba(29,63,135,.4); }
.bcard-idx { display: flex; align-items: center; gap: 10px; font-size: 11px; color: var(--blue-700); letter-spacing: .1em; margin-bottom: 14px; }
.bcard-idx::after { content: ""; flex: 1; max-width: 60px; height: 1px; background: currentColor; opacity: .35; }
.bcard-desc { margin-top: 12px; color: var(--mu-l); font-size: 15px; line-height: 1.75; max-width: 520px; }
.bcard-a { grid-column: span 7; min-height: 560px; background-color: #e9f0fd; border-color: rgba(61,115,221,.22); }
.bcard-a.bp-light { background-color: #e8effd; }
.bcard-b { grid-column: span 5; }
.bcard-c { grid-column: span 4; color: var(--tx-d); border-color: transparent; }
.bcard-c .bcard-desc { color: var(--mu-d); }
.bcard-c .bcard-idx { color: var(--acc-d); }
.bcard-c::before { background: radial-gradient(420px circle at var(--mx) var(--my), rgba(61,115,221,.3), transparent 60%); }
.bcard-d { grid-column: span 8; }
.bcard-s { grid-column: span 4; justify-content: flex-start; gap: 0; }
.bcard-s .h4 { margin-top: 40px; }
.s-ico { width: 44px; height: 44px; color: var(--blue); }
.s-ico path, .s-ico circle { stroke-dasharray: 160; stroke-dashoffset: 0; }
.s-num { position: absolute; right: 22px; top: 22px; font-family: var(--f-mono); font-size: 11px; color: var(--blue); opacity: .7; }

.globe-wrap { position: relative; flex: 1; min-height: 320px; margin: 0 calc(-1 * clamp(26px, 2.6vw, 40px)) calc(-1 * clamp(26px, 2.6vw, 40px)); overflow: hidden; }
.globe { position: absolute; inset: 0; width: 100%; height: 100%; }
.globe-tag { position: absolute; left: 0; top: 0; display: inline-flex; align-items: center; gap: 8px; padding: 5px 10px; border-radius: 4px; background: rgba(255,255,255,.88); border: 1px solid rgba(61,115,221,.25); font-size: 11.5px; color: var(--tx-l); box-shadow: 0 10px 24px -12px rgba(29,63,135,.4); transition: opacity .4s; will-change: transform; }
.globe-tag i { width: 6px; height: 6px; background: var(--blue); transform: rotate(45deg); }

.widget { border-radius: 10px; background: var(--white); border: 1px solid var(--line-l); box-shadow: 0 24px 48px -30px rgba(29,63,135,.3); padding: 20px; }
.widget-head { display: flex; justify-content: space-between; align-items: center; gap: 10px; font-size: 11.5px; color: var(--mu-l); }
.widget-head .ok { display: inline-flex; align-items: center; gap: 8px; color: #0e9a70; }
.widget-head .ok b { font-weight: 600; font-variant-numeric: tabular-nums; }
.widget-ai { background: #f8faff; }
.ai-count { margin-top: 10px; display: flex; align-items: baseline; gap: 8px; flex-wrap: wrap; }
.ai-count b { font-family: var(--f-disp); font-size: clamp(26px, 2.5vw, 36px); font-weight: 600; letter-spacing: -.04em; font-variant-numeric: tabular-nums; }
.ai-count span { font-size: 12px; color: var(--mu-l); }
.waves { width: 100%; height: 120px; margin-top: 14px; border: 1px solid var(--line-l); background-image: linear-gradient(var(--grid-l) 1px, transparent 1px), linear-gradient(90deg, var(--grid-l) 1px, transparent 1px); background-size: 30px 22px; }

.stack { position: relative; height: 300px; display: flex; align-items: center; justify-content: center; }
.stack-iso { position: relative; width: 170px; height: 170px; transform: translateX(-30px) translateY(70px) rotateX(58deg) rotateZ(-45deg); transform-style: preserve-3d; }
.plate { position: absolute; inset: 0; border-radius: 6px; background: linear-gradient(135deg, rgba(61,115,221,.26), rgba(var(--bl),.06)); border: 1px solid rgba(var(--bl),.45); background-image: linear-gradient(rgba(var(--bl),.14) 1px, transparent 1px), linear-gradient(90deg, rgba(var(--bl),.14) 1px, transparent 1px), linear-gradient(135deg, rgba(61,115,221,.26), rgba(var(--bl),.06)); background-size: 17px 17px, 17px 17px, 100% 100%; transform: translateZ(calc(var(--i) * 14px)); transition: transform .9s var(--ease), border-color .5s, box-shadow .5s; }
.plate span { position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%) rotateZ(45deg) scaleY(1.887); font-size: 11px; font-weight: 600; color: #fff; opacity: 0; white-space: nowrap; transition: opacity .4s; }
.stack.is-open .plate { transform: translateZ(calc(var(--i) * 34px)); }
.plate.is-hot { background-color: var(--blue); background-image: linear-gradient(rgba(255,255,255,.18) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.18) 1px, transparent 1px), linear-gradient(135deg, rgba(61,115,221,.95), rgba(106,149,234,.8)); border-color: rgba(255,255,255,.75); box-shadow: 0 0 40px rgba(61,115,221,.7); }
.plate.is-hot span { opacity: 1; }
.stack-legend { position: absolute; right: 0; top: calc(50% + 35px); transform: translateY(-50%); display: grid; gap: 8px; font-size: 11px; color: var(--mu-d); }
.stack-legend li { transition: color .4s, transform .5s var(--ease); }
.stack-legend li.on { color: var(--acc-d); transform: translateX(-6px); }

.widget-dash { padding: 0; overflow: hidden; }
.widget-dash .widget-head { padding: 14px 20px; border-bottom: 1px solid var(--line-l); background: #f8faff; }
.widget-dash .widget-head span:first-child { display: inline-flex; align-items: center; gap: 8px; color: var(--tx-l); font-weight: 500; }
.sq { width: 8px; height: 8px; background: var(--blue); }
.url { padding: 3px 10px; border-radius: 3px; background: #eef2fa; }
.dash-stats { display: grid; grid-template-columns: repeat(3, 1fr); border-bottom: 1px solid var(--line-l); }
.dash-stats > div { padding: 18px 20px; border-right: 1px solid var(--line-l); }
.dash-stats > div:last-child { border-right: 0; }
.dash-stats p { font-size: 12px; color: var(--mu-l); }
.dash-stats b { display: inline-block; margin-top: 4px; font-family: var(--f-disp); font-size: 26px; font-weight: 600; letter-spacing: -.04em; font-variant-numeric: tabular-nums; }
.dash-stats small { margin-left: 4px; font-size: 12px; color: var(--mu-l); }
.dash-stats em { display: block; margin-top: 4px; font-size: 11.5px; font-weight: 600; }
.ok { color: #0e9a70; } .vio { color: var(--blue-700); } .blu { color: var(--blue); }
.feed { padding: 8px; display: grid; gap: 2px; overflow: hidden; position: relative; contain: paint; }
.feed li { display: grid; grid-template-columns: auto 1fr auto; gap: 12px; align-items: center; padding: 10px 12px; border-radius: 6px; transition: background .3s; overflow: hidden; box-sizing: border-box; }
.feed li:hover { background: #f3f6fd; }
.feed b { display: block; font-size: 13.5px; font-weight: 600; }
.feed small { display: block; font-size: 11.5px; color: var(--mu-l); }
.feed .r { text-align: right; }
.av { width: 32px; height: 32px; border-radius: 6px; display: grid; place-items: center; font-size: 12px; font-weight: 700; }
.av-v { background: var(--blue-100); color: var(--blue-700); } .av-i { background: #e2f1fb; color: #1677b8; }
.av-c { background: #ffece3; color: #c94a12; } .av-g { background: #ddf6ec; color: #0e9a70; }

/* ==========================================================================
   Courses · 专业课程矩阵（学制 → 专业 → 课程 三级级联筛选）
   布局：左侧粘性分类树 296px + 右侧结果区；≤1080 分类树折叠为面板
   ========================================================================== */
.courses { padding: clamp(96px, 12vw, 180px) 0 clamp(48px, 6vw, 80px); }
.courses-head { display: flex; justify-content: space-between; align-items: flex-end; gap: 32px; flex-wrap: wrap; margin-bottom: clamp(32px, 4vw, 56px); }
.courses-head .h2 { font-size: clamp(36px, 4.6vw, 72px); }

/* scale stats */
.cmx-stats { display: grid; grid-template-columns: repeat(4, auto); border: 1px solid var(--line-l); border-radius: var(--r-md); background: rgba(255,255,255,.72); }
.cmx-stats > div { padding: 14px clamp(16px, 1.6vw, 24px) 13px; border-left: 1px dashed var(--line-l); }
.cmx-stats > div:first-child { border-left: 0; }
.cmx-stats dt { font-family: var(--f-mono); font-size: 10.5px; letter-spacing: .1em; color: var(--mu-l); white-space: nowrap; }
.cmx-stats dd { margin-top: 6px; font-family: var(--f-disp); font-weight: 600; font-size: clamp(26px, 2.3vw, 36px); line-height: 1; letter-spacing: -.03em; color: var(--tx-l); font-variant-numeric: tabular-nums; }
.cmx-stats .is-live dd { color: var(--blue); }

.cmx { display: grid; grid-template-columns: 296px minmax(0, 1fr); gap: 20px; align-items: start; }

/* ---------- side tree ---------- */
.cmx-side { position: sticky; top: calc(var(--nav-h) + 16px); display: flex; flex-direction: column; max-height: calc(100vh - var(--nav-h) - 32px); max-height: calc(100svh - var(--nav-h) - 32px); border-radius: var(--r-lg); background: var(--white); border: 1px solid var(--line-l); overflow: hidden; }
.cmx-side-head { display: flex; align-items: center; gap: 10px; width: 100%; min-height: 56px; padding: 0 18px; border-bottom: 1px solid var(--line-l); text-align: left; }
.cmx-side-head:disabled { cursor: default; }
.cmx-side-ttl { display: inline-flex; align-items: center; gap: 8px; flex: none; font-size: 15px; font-weight: 700; color: var(--tx-l); }
.cmx-side-ttl svg { width: 17px; height: 17px; color: var(--blue); }
.cmx-side-cur { margin-left: auto; min-width: 0; font-size: 11px; color: var(--blue-700); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.cmx-caret { display: none; flex: none; width: 8px; height: 8px; margin: -4px 2px 0 4px; border-right: 1.5px solid var(--mu-l); border-bottom: 1.5px solid var(--mu-l); transform: rotate(45deg); transition: transform .5s var(--ease); }
.cmx-tree { flex: 1; min-height: 0; overflow-y: auto; overscroll-behavior: contain; padding: 6px 10px 16px; scrollbar-width: thin; scrollbar-color: var(--blue-200) transparent; }
.cmx-tree::-webkit-scrollbar-track { background: transparent; }
.cmx-tree::-webkit-scrollbar-thumb { background: var(--blue-200); border-color: var(--white); }
.cmx-tree-cap { padding: 12px 10px 8px 30px; font-size: 12px; font-weight: 600; letter-spacing: .08em; color: var(--mu-l); }
.cmx-item { display: grid; grid-template-columns: 22px minmax(0, 1fr); align-items: center; margin: 3px 0; }
.cmx-tog { width: 22px; height: 38px; display: grid; place-items: center; color: #9aa3b8; border-radius: 4px; transition: color .3s; }
.cmx-tog::before { content: ""; width: 6px; height: 6px; margin-left: -2px; border-right: 1.4px solid currentColor; border-bottom: 1.4px solid currentColor; transform: rotate(-45deg); transition: transform .45s var(--ease); }
.cmx-tog:hover { color: var(--blue); }
.cmx-node.is-open > .cmx-item .cmx-tog::before { transform: rotate(45deg); margin: -4px 0 0; }
.cmx-row { display: flex; align-items: center; gap: 8px; width: 100%; min-height: 38px; padding: 7px 10px; border-radius: 6px; text-align: left; font-size: 14.5px; font-weight: 500; line-height: 1.4; color: var(--tx-l); transition: background .3s, color .3s, box-shadow .3s; }
.cmx-row:hover { background: var(--blue-50); color: var(--blue-700); }
.cmx-row.is-path { color: var(--blue-700); font-weight: 600; }
.cmx-row[aria-current="true"] { background: var(--blue-100); color: var(--blue-700); font-weight: 600; box-shadow: inset 2px 0 0 var(--blue); }
.cmx-lbl { flex: 1; min-width: 0; line-height: 1.45; }
.cmx-n { flex: none; min-width: 28px; height: 22px; padding: 0 7px; border-radius: 11px; display: inline-grid; place-items: center; font-family: var(--f-mono); font-size: 11.5px; font-weight: 600; color: var(--mu-l); background: #eef1f7; transition: background .3s, color .3s; }
.cmx-row[aria-current="true"] .cmx-n { background: var(--blue); color: #fff; }
.cmx-live { flex: none; display: inline-flex; align-items: center; gap: 5px; font-family: var(--f-mono); font-size: 11.5px; color: #0e9a70; }
.cmx-live::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--mint); box-shadow: 0 0 0 3px rgba(34,196,143,.16); }
.cmx-live[hidden] { display: none; }
.cmx-node.is-empty > .cmx-item .cmx-row { opacity: .38; }
.cmx-kids { display: grid; grid-template-rows: 0fr; visibility: hidden; transition: grid-template-rows .5s var(--ease), visibility 0s .5s; }
.cmx-node.is-open > .cmx-kids { grid-template-rows: 1fr; visibility: visible; transition: grid-template-rows .5s var(--ease), visibility 0s; }
.cmx-kids > ul { min-height: 0; overflow: hidden; margin-left: 9px; padding-left: 8px; border-left: 1px dashed rgba(61,115,221,.3); }
.cmx-node.is-leaf .cmx-row { min-height: 34px; padding: 6px 10px; font-size: 13.5px; color: #545e78; }
.cmx-node.is-leaf .cmx-row::before { content: ""; flex: none; width: 5px; height: 5px; border-radius: 50%; border: 1px solid var(--blue-300); }
.cmx-node.is-leaf .cmx-row.has-live::before { background: var(--mint); border-color: var(--mint); }
.cmx-node.is-leaf .cmx-row[aria-current="true"] { color: var(--blue-700); }

/* ---------- toolbar / path ---------- */
.cmx-main { min-width: 0; }
.cmx-toolbar { display: flex; align-items: center; justify-content: space-between; gap: 12px 16px; flex-wrap: wrap; }
.seg { position: relative; display: inline-flex; padding: 4px; border-radius: 8px; background: var(--white); border: 1px solid var(--line-l); }
.seg button { position: relative; z-index: 1; height: 38px; padding: 0 16px; border-radius: 5px; font-size: 13.5px; font-weight: 500; color: var(--mu-l); white-space: nowrap; transition: color .4s var(--ease), opacity .3s; display: inline-flex; align-items: center; gap: 6px; }
.seg button i { font-size: 10.5px; opacity: .7; }
.seg button[aria-selected="true"] { color: #fff; }
.seg button:disabled { opacity: .38; cursor: not-allowed; }
.seg-ind { position: absolute; z-index: 0; top: 4px; bottom: 4px; left: 0; width: 0; border-radius: 5px; background: var(--blue); }
.cmx-search { flex: 1 1 220px; max-width: 340px; display: flex; align-items: center; gap: 10px; height: 48px; padding: 0 14px; border-radius: 8px; background: var(--white); border: 1px solid var(--line-l); color: #9aa3b8; cursor: text; transition: border-color .3s, box-shadow .3s, color .3s; }
.cmx-search:focus-within { border-color: var(--blue); box-shadow: 0 0 0 4px rgba(61,115,221,.12); color: var(--blue); }
.cmx-search svg { flex: none; width: 16px; height: 16px; }
.cmx-search input { flex: 1; min-width: 0; height: 100%; border: 0; outline: 0; background: none; font-size: 14px; color: var(--tx-l); }
.cmx-search input::placeholder { color: #a2a9bb; }
.cmx-path { display: flex; align-items: center; justify-content: space-between; gap: 10px 20px; flex-wrap: wrap; margin: 18px 0 16px; padding-bottom: 14px; border-bottom: 1px dashed var(--line-l); }
.cmx-crumbs { display: flex; align-items: center; flex-wrap: wrap; gap: 4px 2px; font-size: 13.5px; }
.cmx-crumbs li { display: inline-flex; align-items: center; color: var(--tx-l); font-weight: 600; }
.cmx-crumbs li + li::before { content: "/"; margin: 0 6px; color: #b3bacb; font-weight: 400; }
.cmx-crumbs button { padding: 2px 4px; border-radius: 4px; font-weight: 400; color: var(--mu-l); transition: color .3s, background .3s; }
.cmx-crumbs button:hover { color: var(--blue-700); background: var(--blue-50); }
.cmx-crumbs .is-q, .cmx-crumbs .is-reset { margin-left: 10px; }
.cmx-crumbs .is-q::before, .cmx-crumbs .is-reset::before { content: none; }
.cmx-crumbs .is-q { gap: 2px; height: 26px; padding: 0 2px 0 10px; border-radius: 13px; background: var(--blue-100); color: var(--blue-700); font-size: 12.5px; font-weight: 500; }
.cmx-crumbs .is-q button { width: 22px; height: 22px; padding: 0; border-radius: 50%; color: var(--blue-700); font-size: 14px; line-height: 1; }
.cmx-crumbs .is-q button:hover { background: var(--blue); color: #fff; }
.cmx-crumbs .is-reset button { font-size: 12.5px; color: var(--blue-700); text-decoration: underline; text-underline-offset: 3px; text-decoration-color: rgba(61,115,221,.35); }
.cmx-count { font-size: 12px; color: var(--mu-l); }
.cmx-count b { color: var(--blue-700); font-weight: 500; }

/* ---------- root view: 学制 × 专业 matrix board ---------- */
/* 固定 4 / 2 / 1 列，避免 auto-fit 出现 3+1 的孤列 */
.cmx-board { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.cmx-col { display: flex; flex-direction: column; border-radius: var(--r-lg); background: var(--white); border: 1px solid var(--line-l); overflow: hidden; }
/* 学制层级越高底色越深：职业本科 → 技工院校 */
.cmx-col-head { flex: 1; min-height: 168px; justify-content: space-between; --c1: color-mix(in srgb, #1d3f87 calc(100% - var(--lv) * 25%), #3d73dd); position: relative; display: flex; flex-direction: column; align-items: flex-start; width: 100%; padding: 16px 18px 15px; text-align: left; color: #fff;
  background-color: #2f62cc;
  background-image:
    linear-gradient(rgba(255,255,255,.1) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.1) 1px, transparent 1px),
    linear-gradient(rgba(255,255,255,.045) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.045) 1px, transparent 1px),
    radial-gradient(120% 140% at 90% 0%, rgba(255,255,255,.18), transparent 60%), linear-gradient(var(--c1), var(--c1));
  background-size: 40px 40px, 40px 40px, 8px 8px, 8px 8px, 100% 100%, 100% 100%;
  transition: filter .4s; }
.cmx-col-head::after { content: "↗"; position: absolute; right: 16px; top: 13px; font-size: 14px; opacity: .6; transition: transform .5s var(--ease), opacity .3s; }
.cmx-col-head:hover { filter: brightness(1.08); }
.cmx-col-head:hover::after { transform: translate(2px, -2px); opacity: 1; }
.cmx-col-ttl { position: relative; z-index: 2; margin-top: 0; font-family: var(--f-disp); font-size: 21px; font-weight: 700; line-height: 1.2; letter-spacing: -.02em; }
.cmx-col-tags { position: relative; z-index: 2; display: flex; flex-wrap: wrap; gap: 6px; }
.cmx-col-tags .tag { position: relative; }
.cmx-col-art { position: absolute; z-index: 1; top: 0; right: 0; bottom: 0; width: 56%; pointer-events: none; -webkit-mask-image: linear-gradient(90deg, transparent, #000 38%); mask-image: linear-gradient(90deg, transparent, #000 38%); }
.cmx-col-art svg.art { position: absolute; inset: 0; width: 100%; height: 100%; }
.cmx-majors { flex: 1; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); align-content: start; gap: 2px; padding: 8px; }
.cmx-majors > li { display: flex; min-width: 0; }
.cmx-major { flex: 1; display: flex; align-items: center; justify-content: space-between; gap: 8px; width: 100%; min-height: 52px; padding: 9px 10px; border-radius: 8px; text-align: left; transition: background .3s, box-shadow .3s; }
.cmx-major:hover { background: var(--blue-50); box-shadow: inset 2px 0 0 var(--blue); }
.cmx-major:hover .cmx-major-name { color: var(--blue-700); }
.cmx-major:disabled { opacity: .36; cursor: not-allowed; background: none; box-shadow: none; }
.cmx-major-name { flex: 1; min-width: 0; font-size: 14px; font-weight: 600; line-height: 1.4; color: var(--tx-l); transition: color .3s; }
.cmx-major-meta { flex: none; display: inline-flex; align-items: center; gap: 6px; }

/* ---------- list view: course cells ---------- */
.cmx-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 14px; }
.cmx-ghead { grid-column: 1 / -1; display: flex; align-items: center; gap: 12px; padding-top: 14px; }
.cmx-ghead:first-child { padding-top: 0; }
.cmx-ghead::after { content: ""; flex: 1; border-top: 1px dashed var(--line-l); }
.cmx-ghead button { display: inline-flex; align-items: baseline; gap: 6px; text-align: left; transition: color .3s; }
.cmx-ghead button span { font-size: 13px; color: var(--mu-l); }
.cmx-ghead button b { font-family: var(--f-disp); font-size: 17px; font-weight: 700; color: var(--tx-l); transition: color .3s; }
.cmx-ghead button:hover b { color: var(--blue-700); }
.cmx-ghead > span { order: 2; font-size: 11px; color: var(--mu-l); }
.ccell { position: relative; display: flex; flex-direction: column; min-height: 176px; border-radius: var(--r-md); background: var(--white); border: 1px solid var(--line-l); overflow: hidden; transition: border-color .4s, box-shadow .6s var(--ease), transform .6s var(--ease); }
.ccell:hover { border-color: rgba(61,115,221,.45); box-shadow: 0 28px 56px -34px rgba(29,63,135,.5); transform: translateY(-3px); }
.ccell:has(.ccell-link:focus-visible) { outline: 2px solid var(--blue); outline-offset: 2px; }
.ccell-band.ccard-art { height: 86px; min-height: 0; }
.ccell-band .tag { position: absolute; z-index: 2; right: 10px; top: 10px; }
/* 未上线：黑色草图底 + 去色线稿 */
.ccard-art.is-draft { background-color: #121826; background-image:
    linear-gradient(rgba(255,255,255,.08) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.08) 1px, transparent 1px),
    linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px),
    radial-gradient(120% 120% at 80% 0%, #2b3345 0%, #161d2c 55%, #0d121c 100%); }
.ccard-art.is-draft svg.art { filter: grayscale(1); opacity: .72; }
.ccell:hover .ccard-art.is-draft svg.art { opacity: .9; }
.ccell-body { flex: 1; padding: 14px 16px 12px; }
.ccell-meta { display: flex; justify-content: space-between; gap: 8px; font-size: 10.5px; letter-spacing: .06em; color: #9aa3b8; }
.ccell-meta .is-multi { color: var(--blue-700); }
.ccell-title { margin-top: 6px; font-family: var(--f-disp); font-size: 15.5px; font-weight: 700; line-height: 1.45; letter-spacing: -.01em; color: var(--tx-l); }
.ccell-link { text-align: left; transition: color .3s; }
.ccell-link::after { content: ""; position: absolute; inset: 0; z-index: 1; }
.ccell-link:focus-visible { outline: 0; }
.ccell:hover .ccell-link { color: var(--blue-700); }
.ccell-path { margin-top: 8px; font-size: 12px; color: var(--blue-700); }
.ccell mark { background: rgba(61,115,221,.16); color: var(--blue-800); border-radius: 2px; padding: 0 1px; }
.ccell-foot { display: flex; align-items: center; justify-content: flex-end; gap: 8px; min-height: 46px; padding: 8px 16px; border-top: 1px dashed var(--line-l); }
.ccell-act { position: relative; z-index: 2; height: 28px; padding: 0 11px; border-radius: 5px; border: 1px solid rgba(61,115,221,.3); font-size: 12px; font-weight: 600; color: var(--blue-700); transition: background .3s, color .3s, border-color .3s; }
.ccell-act:hover { background: var(--blue); border-color: var(--blue); color: #fff; }
.ccell-act.ccell-act-disabled { cursor: pointer; border-color: rgba(61,115,221,.3); color: var(--blue-700); }
.ccell-act.ccell-act-disabled:hover { background: rgba(61,115,221,.1); border-color: rgba(61,115,221,.5); color: var(--blue-700); }
.ccell-act-tip {
  position: absolute;
  right: calc(100% + 10px);
  top: 50%;
  transform: translateY(-50%) translateX(6px);
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 11.5px;
  font-weight: 500;
  line-height: 1;
  white-space: nowrap;
  color: var(--blue-700);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  user-select: none;
  transition: opacity .25s cubic-bezier(.22, 1, .36, 1), transform .25s cubic-bezier(.22, 1, .36, 1), visibility .25s;
}
.ccell-act-tip::before {
  content: "";
  display: inline-block;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background-color: currentColor;
  box-shadow: 0 0 6px currentColor;
  flex-shrink: 0;
}
.ccell-act.is-tip-active .ccell-act-tip,
.chip-btn.is-tip-active .ccell-act-tip {
  opacity: 1;
  visibility: visible;
  transform: translateY(-50%) translateX(0);
}
.ccell-act.is-tip-pulse .ccell-act-tip,
.chip-btn.is-tip-pulse .ccell-act-tip {
  animation: nmTipPulse .3s ease;
}
@keyframes nmTipPulse {
  0% { transform: translateY(-50%) scale(1); }
  50% { transform: translateY(-50%) scale(1.08); }
  100% { transform: translateY(-50%) scale(1); }
}
.chip-btn.ccard-demo-btn { position: relative; }
.chip-btn.ccard-demo-btn .ccell-act-tip {
  right: auto;
  left: 50%;
  top: auto;
  bottom: calc(100% + 8px);
  transform: translateX(-50%) translateY(4px);
  background: rgba(7, 18, 48, .92);
  border: 1px solid rgba(127, 214, 255, .3);
  padding: 5px 9px;
  border-radius: 4px;
  box-shadow: 0 6px 16px rgba(0, 0, 0, .3);
}
.chip-btn.ccard-demo-btn.is-tip-active .ccell-act-tip {
  transform: translateX(-50%) translateY(0);
}
.ccell-arr { font-size: 12px; color: #9aa3b8; transition: color .3s, transform .5s var(--ease); }
.ccell:hover .ccell-arr { color: var(--blue-700); transform: translateX(3px); }
.cmx-more { display: flex; justify-content: center; margin-top: 24px; }
.cmx-more[hidden] { display: none; }
.cmx-more .chip-btn { min-width: 220px; height: 44px; }

/* ---------- course view: detail + linked resource ---------- */
/* 课程层级：课程实训资源集合 */
.cmx-sw-head { display: flex; align-items: baseline; flex-wrap: wrap; gap: 4px 10px; margin-bottom: 14px; }
.cmx-sw-head b { font-family: var(--f-disp); font-size: 17px; font-weight: 700; color: var(--tx-l); }
.cmx-sw-head span { font-size: 12px; color: var(--blue-700); }
.cmx-sw-head p { flex-basis: 100%; font-size: 13px; color: var(--mu-l); }
.cmx-sw { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.cmx-sw .ccard { min-height: 500px; }
@media (min-width: 901px) and (max-width: 1280px) { .cmx-sw { grid-template-columns: repeat(2, minmax(0, 1fr)); } }

/* linked resource card (blueprint) */
.ccard { position: relative; display: flex; flex-direction: column; border-radius: var(--r-lg); overflow: hidden; background: var(--white); border: 1px solid var(--line-l); cursor: pointer; transition: box-shadow .6s var(--ease), border-color .5s; }
.ccard:hover { box-shadow: 0 40px 80px -44px rgba(29,63,135,.5); border-color: rgba(61,115,221,.45); }
.ccard-art { position: relative; flex: none; height: clamp(190px, 15vw, 230px); overflow: hidden; color: #fff;
  background-color: #2f62cc;
  background-image:
    linear-gradient(rgba(255,255,255,.12) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.12) 1px, transparent 1px),
    linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px),
    radial-gradient(120% 120% at 80% 0%, #4a80e6 0%, #2f62cc 50%, #234fae 100%);
  background-size: 60px 60px, 60px 60px, 12px 12px, 12px 12px, 100% 100%; }
.ccard-art-web { background-color: #1d4a9a; background-image:
    linear-gradient(rgba(255,255,255,.12) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.12) 1px, transparent 1px),
    linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px),
    radial-gradient(120% 120% at 80% 0%, #2d6fb8 0%, #1d4a9a 55%, #173c80 100%); }
.ccard-art svg.art { position: absolute; inset: 0; width: 100%; height: 100%; transition: transform 1.2s var(--ease); }
.ccard:hover .ccard-art svg.art, .ccell:hover .ccard-art svg.art { transform: scale(1.05); }
.ccard-tags { position: absolute; z-index: 2; left: 14px; right: 14px; top: 14px; display: flex; justify-content: space-between; gap: 8px; }
.tag { display: inline-flex; align-items: center; height: 24px; padding: 0 9px; border-radius: 3px; background: rgba(7,18,48,.28); border: 1px solid rgba(255,255,255,.35); color: #fff; font-size: 10.5px; white-space: nowrap; }
.tag-ok { background: rgba(34,196,143,.25); border-color: rgba(120,240,200,.5); color: #d6fff0; }
.tag-blue { background: rgba(127,214,255,.2); border-color: rgba(127,214,255,.5); color: #e1f6ff; }
.ccard-no { position: absolute; z-index: 2; left: 16px; bottom: 6px; font-family: var(--f-sans); font-weight: 300; font-size: 60px; line-height: 1; color: transparent; -webkit-text-stroke: 1px rgba(255,255,255,.75); letter-spacing: -.04em; }
.ccard-scale { position: absolute; z-index: 2; right: 14px; bottom: 12px; font-family: var(--f-mono); font-size: 9.5px; letter-spacing: .12em; color: rgba(255,255,255,.75); }
.ccard-body { flex: 1; padding: 22px 24px 8px; display: flex; flex-direction: column; }
.ccard-meta { font-size: 11.5px; color: var(--blue-700); }
.ccard-title { margin-top: 8px; font-family: var(--f-disp); font-weight: 700; font-size: clamp(19px, 1.5vw, 22px); line-height: 1.35; letter-spacing: -.02em; }
.ccard-sub { margin-top: 6px; font-size: 11.5px; color: var(--mu-l); }
.ccard-desc { margin-top: 12px; font-size: 13.5px; line-height: 1.75; color: #545e78; }
.ccard-foot { display: flex; align-items: center; padding: 16px 24px 22px; border-top: 1px dashed var(--line-l); margin-top: 14px; }
.ccard-btns { display: flex; gap: 8px; width: 100%; }
.ccard-btns > * { flex: 1; display: inline-flex; justify-content: center; align-items: center; }
.cmx-cobuild { display: flex; flex-direction: column; justify-content: space-between; align-items: flex-start; gap: 18px; min-height: 100%; padding: clamp(24px, 2.4vw, 34px); border-radius: var(--r-lg); border: 1px dashed rgba(61,115,221,.45); background: rgba(255,255,255,.45); }
.cmx-cobuild .mono { font-size: 11px; letter-spacing: .1em; color: var(--blue-700); }
.cmx-cobuild-ttl { font-family: var(--f-disp); font-size: clamp(28px, 2.6vw, 40px); font-weight: 700; line-height: 1.12; letter-spacing: -.03em; color: var(--tx-l); }
.cmx-cobuild-desc { max-width: 34em; font-size: 14px; line-height: 1.8; color: #545e78; }

/* empty */
.cmx-empty { padding: clamp(40px, 5vw, 64px) 24px; border-radius: var(--r-lg); border: 1px dashed rgba(61,115,221,.4); background: rgba(255,255,255,.5); text-align: center; }
.cmx-empty .mono { font-size: 11px; letter-spacing: .12em; color: var(--blue-700); }
.cmx-empty-ttl { margin-top: 10px; font-family: var(--f-disp); font-size: 24px; font-weight: 700; color: var(--tx-l); }
.cmx-empty-desc { margin-top: 6px; font-size: 14px; color: var(--mu-l); }
.cmx-empty-btns { display: flex; justify-content: center; gap: 8px; margin-top: 20px; }
.cmx-empty-btns .chip-btn { display: inline-flex; align-items: center; }

.art .a-dim { stroke: rgba(255,255,255,.28); }
.art .a-mid { stroke: rgba(255,255,255,.6); }
.art .a-hi { stroke: #fff; }
.art .a-vio { stroke: #cfe0ff; }
.art .a-glow { stroke: #fff; filter: drop-shadow(0 0 5px rgba(200,225,255,.9)); }
.art .a-dot { fill: #fff; }
.art .a-dimtx { fill: rgba(255,255,255,.8); font-family: var(--f-mono); font-size: 8px; letter-spacing: .08em; }
.art .a-scan { stroke-dasharray: 6 10; animation: dash 6s linear infinite; }
@keyframes dash { to { stroke-dashoffset: -160; } }

/* ==========================================================================
   Console (dark)
   ========================================================================== */
.console-sec { position: relative; z-index: 2; padding: clamp(64px, 8vw, 110px) 0 clamp(90px, 10vw, 150px); }
.console-sec::before { content: ""; position: absolute; left: 50%; top: 40%; width: 80vw; height: 60vw; transform: translate(-50%, -30%); background: radial-gradient(closest-side, rgba(61,115,221,.22), transparent); pointer-events: none; }
.console { position: relative; max-width: 1240px; margin: 0 auto; border-radius: 10px; overflow: hidden; background: linear-gradient(180deg, #0d1f47, #091735); border: 1px solid rgba(var(--bl),.22); box-shadow: 0 60px 140px -40px rgba(61,115,221,.45), inset 0 1px 0 rgba(255,255,255,.05); transition: border-color .4s, box-shadow .4s; }
.console.is-alarm { border-color: rgba(255,106,43,.7); box-shadow: 0 60px 140px -40px rgba(255,106,43,.5), inset 0 1px 0 rgba(255,255,255,.05); }
.console-bar { display: flex; justify-content: space-between; align-items: center; gap: 16px; padding: 12px 18px; border-bottom: 1px solid var(--line-d); font-size: 11.5px; color: var(--mu-d); background: rgba(var(--nv),.5); }
.cb-l, .cb-r { display: flex; align-items: center; gap: 8px; }
.cb-r { color: var(--mint); }
.cb-r b { font-weight: 500; }
.d { width: 10px; height: 10px; border-radius: 2px; }
.d1 { background: #ff6a2b; } .d2 { background: #f5b83d; } .d3 { background: #22c48f; }
.cb-l span { margin-left: 8px; }
.console-main { display: grid; grid-template-columns: 220px 1fr 260px; min-height: 440px; }
.con-tabs { position: relative; display: flex; flex-direction: column; gap: 2px; padding: 14px 10px; border-right: 1px solid var(--line-d); }
.con-tabs button { position: relative; z-index: 1; display: flex; align-items: center; gap: 12px; height: 46px; padding: 0 14px; border-radius: 6px; font-size: 14px; text-align: left; color: var(--mu-d); transition: color .4s; }
.con-tabs button i { font-size: 10.5px; color: #4f628f; transition: color .4s; }
.con-tabs button:hover { color: var(--tx-d); }
.con-tabs button[aria-selected="true"] { color: #fff; }
.con-tabs button[aria-selected="true"] i { color: var(--acc-d); }
.con-ind { position: absolute; z-index: 0; left: 10px; right: 10px; top: 0; height: 46px; border-radius: 6px; background: rgba(61,115,221,.22); border: 1px solid rgba(var(--bl),.3); transition: transform .6s var(--ease); }
.con-ind::before { content: ""; position: absolute; left: -11px; top: 12px; bottom: 12px; width: 2px; background: var(--acc-d); }
.con-term { padding: 22px 26px; font-size: 13px; line-height: 1.85; color: #c3cee8; overflow: hidden; min-height: 360px; }
.con-term .t-line { white-space: pre-wrap; word-break: break-word; }
.con-term .t-cmd { color: #6d80ab; }
.con-term .t-cmd::before { content: "$ "; color: var(--acc-d2); }
.con-term .t-vio { color: #9dbbf6; }
.con-term .t-ok { color: #4fe0ad; }
.con-term .t-cyan { color: var(--cyan); }
.con-term .t-box { margin: 10px 0; padding: 12px 14px; border-radius: 6px; border: 1px solid; }
.con-term .t-red { background: rgba(255,106,43,.08); border-color: rgba(255,106,43,.4); color: #ffc0a3; }
.con-term .t-amber { background: rgba(245,184,61,.08); border-color: rgba(245,184,61,.38); color: #ffd98c; }
.con-term .t-violet { background: rgba(61,115,221,.14); border-color: rgba(106,149,234,.45); color: #d3e1fc; }
.con-term .t-plain { background: rgba(255,255,255,.03); border-color: var(--line-d); color: #c3cee8; }
.con-term .t-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin: 8px 0; }
.con-term .t-grid > div { padding: 8px 12px; border-radius: 6px; background: rgba(255,255,255,.04); border: 1px solid var(--line-d); }
.con-term .t-grid b { color: #4fe0ad; font-weight: 500; }
.caret { display: inline-block; width: 8px; height: 1.1em; vertical-align: -2px; background: var(--acc-d); animation: blink 1s steps(1) infinite; margin-left: 2px; }
@keyframes blink { 50% { opacity: 0; } }
.con-tele { border-left: 1px solid var(--line-d); padding: 18px; display: flex; flex-direction: column; gap: 16px; font-size: 12px; }
.tele-title { color: var(--mu-d); font-size: 11px; letter-spacing: .1em; }
.tele-wave { width: 100%; height: 90px; border-radius: 4px; background: rgba(var(--nv),.5); border: 1px solid var(--line-d); }
.tele-list { display: grid; gap: 2px; }
.tele-list div { display: flex; justify-content: space-between; padding: 9px 0; border-bottom: 1px dashed var(--line-d); }
.tele-list dt { color: var(--mu-d); }
.tele-list dd { color: var(--tx-d); font-variant-numeric: tabular-nums; }
.tele-list dd.ok { color: var(--mint); }
.tele-list dd.bad { color: var(--orange); }
.tele-chip { margin-top: auto; padding: 10px 12px; border-radius: 6px; background: rgba(34,196,143,.08); border: 1px solid rgba(34,196,143,.3); color: #8ff0cb; font-size: 11.5px; line-height: 1.5; transition: background .4s, border-color .4s, color .4s; }
.tele-chip.bad { background: rgba(255,106,43,.1); border-color: rgba(255,106,43,.45); color: #ffc0a3; }
.tele-chip.vio { background: rgba(61,115,221,.16); border-color: rgba(106,149,234,.5); color: #d3e1fc; }
.console-act { display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; padding: 14px 18px; border-top: 1px solid var(--line-d); background: rgba(var(--nv),.4); }
.console-act p { font-size: 12px; color: var(--mu-d); }
.console-act p span { color: var(--tx-d); }
.console-btns { display: flex; gap: 8px; }
.console-flash { position: absolute; inset: 0; pointer-events: none; opacity: 0; background: radial-gradient(80% 80% at 50% 50%, transparent 40%, rgba(255,106,43,.35)); }

/* ==========================================================================
   Channels / Download / Community / Partner
   ========================================================================== */
.chan-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.chan { --mx: 50%; --my: 50%; position: relative; overflow: hidden; isolation: isolate; border-radius: var(--r-lg); padding: clamp(32px, 3.6vw, 56px); display: flex; flex-direction: column; min-height: 580px; }
.chan::before { content: ""; position: absolute; inset: 0; z-index: -1; opacity: 0; transition: opacity .5s; background: radial-gradient(500px circle at var(--mx) var(--my), rgba(61,115,221,.25), transparent 60%); }
.chan:hover::before { opacity: 1; }
.chan-b { color: var(--tx-d); }
.chan-c { background-color: #e8effd; border: 1px solid rgba(61,115,221,.22); }
.chan-letter { position: absolute; z-index: -1; right: -0.06em; bottom: -0.24em; font-family: var(--f-disp); font-weight: 800; font-size: clamp(260px, 30vw, 460px); line-height: 1; letter-spacing: -.06em; color: transparent; -webkit-text-stroke: 1px rgba(var(--bl),.3); pointer-events: none; }
.chan-c .chan-letter { -webkit-text-stroke-color: rgba(61,115,221,.3); }
.chan-top { display: flex; justify-content: space-between; align-items: center; gap: 12px; font-size: 11.5px; color: var(--mu-d); }
.chan-c .chan-top { color: var(--mu-l); }
.chan .h3 { margin-top: auto; padding-top: 80px; font-size: clamp(28px, 2.6vw, 40px); }
.chan-desc { margin-top: 14px; max-width: 480px; font-size: 15px; line-height: 1.8; color: var(--mu-d); }
.chan-c .chan-desc { color: #545e78; }
.checks { margin: 28px 0 32px; display: grid; }
.checks li { display: flex; align-items: center; gap: 12px; padding: 13px 0; border-top: 1px dashed var(--line-d); font-size: 14.5px; }
.chan-c .checks li { border-top-color: rgba(10,20,48,.14); }
.checks li::before { content: ""; flex: none; width: 18px; height: 18px; border-radius: 4px; background: var(--mint) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 18 18'%3E%3Cpath d='m5 9.2 2.6 2.6L13 6.4' fill='none' stroke='%23071230' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center / 18px no-repeat; }
.chan-c .checks li::before { background-color: var(--blue); background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 18 18'%3E%3Cpath d='m5 9.2 2.6 2.6L13 6.4' fill='none' stroke='%23fff' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E"); }

.dl-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.dl { position: relative; border-radius: var(--r-lg); background: var(--white); border: 1px solid var(--line-l); padding: 12px 12px 22px; display: flex; flex-direction: column; transition: transform .7s var(--ease), box-shadow .7s var(--ease), border-color .5s; }
.dl:hover { transform: translateY(-6px); box-shadow: 0 40px 70px -44px rgba(29,63,135,.45); border-color: rgba(61,115,221,.35); }
.dl > *:not(.dl-glyph) { margin-inline: 14px; }
.dl-glyph { position: relative; height: 170px; border-radius: 8px; display: grid; place-items: center; overflow: hidden; margin-bottom: 26px; background-color: #eef3fd; border: 1px solid rgba(61,115,221,.15); }
.dl-glyph b { position: absolute; right: 12px; top: 10px; font-size: 10.5px; font-weight: 500; color: var(--blue-700); letter-spacing: .12em; }
.g-win { position: relative; display: grid; grid-template-columns: 1fr 1fr; gap: 5px; width: 64px; height: 64px; transform: perspective(300px) rotateY(-18deg); transition: transform .8s var(--ease); }
.g-win i { border-radius: 2px; background: var(--blue); }
.g-win i:nth-child(2), .g-win i:nth-child(3) { background: var(--acc-d2); }
.g-win i:nth-child(4) { background: var(--blue-200); }
.dl:hover .g-win { transform: perspective(300px) rotateY(0deg) scale(1.08); }
.g-chip { position: relative; width: 64px; height: 64px; border-radius: 6px; border: 2px solid var(--blue); display: grid; place-items: center; transition: transform .8s var(--ease); }
.g-chip::before, .g-chip::after { content: ""; position: absolute; background: repeating-linear-gradient(90deg, var(--blue) 0 2px, transparent 2px 10px); height: 8px; left: 10px; right: 8px; }
.g-chip::before { top: -11px; } .g-chip::after { bottom: -11px; }
.g-chip i { width: 26px; height: 26px; border-radius: 3px; background: var(--blue); box-shadow: 0 0 24px rgba(61,115,221,.6); }
.dl:hover .g-chip { transform: rotate(90deg) scale(1.05); }
.g-web { position: relative; width: 88px; height: 62px; border-radius: 5px; border: 2px solid var(--blue); transition: transform .8s var(--ease); }
.g-web::before { content: ""; position: absolute; left: 0; right: 0; top: 13px; height: 2px; background: var(--blue); }
.g-web::after { content: ""; position: absolute; left: 7px; top: 4px; width: 5px; height: 5px; border-radius: 50%; background: var(--blue); box-shadow: 8px 0 0 var(--acc-d2), 16px 0 0 var(--blue-200); }
.g-web i { position: absolute; left: 14px; right: 30px; top: 26px; height: 6px; border-radius: 2px; background: var(--acc-d); box-shadow: 0 12px 0 var(--blue-200); }
.dl:hover .g-web { transform: translateY(-4px) scale(1.06); }
.dl-desc { margin-top: 8px; font-size: 14px; line-height: 1.75; color: var(--mu-l); }
.spec { margin-top: 20px; margin-bottom: 24px !important; font-size: 12px; border-top: 1px solid var(--line-l); }
.spec div { display: flex; justify-content: space-between; gap: 16px; padding: 10px 0; border-bottom: 1px dashed var(--line-l); }
.spec dt { color: var(--blue-700); }
.spec dd { color: var(--tx-l); text-align: right; }
.dl .btn, .dl .dl-act { margin-top: auto; }
.dl-act { display: flex; flex-direction: column; gap: 9px; margin-top: auto; }
.dl-fallback { display: flex; align-items: center; justify-content: center; min-height: 20px; font-size: 12px; }
.dl-fallback-link { display: inline-flex; align-items: center; gap: 5px; color: var(--blue-700); text-decoration: none; font-weight: 500; font-size: 12px; opacity: .88; transition: opacity .2s ease, color .2s ease; padding: 2px 6px; border-radius: 4px; }
.dl-fallback-link:hover { color: var(--blue); opacity: 1; text-decoration: underline; text-underline-offset: 3px; background-color: rgba(61,115,221,.06); }
.dl-fallback-ico { width: 13px; height: 13px; flex-shrink: 0; }
.dl-fallback-text { font-size: 11px; color: var(--mu-l); opacity: .78; }
.btn-progress { position: absolute; inset: 0; z-index: -1; background: var(--blue); transform-origin: 0 50%; transform: scaleX(0); }
.btn-dl.is-loading::before { display: none; }

.bbs-stats { display: flex; align-items: center; gap: clamp(20px, 3vw, 44px); padding-bottom: 6px; }
.bbs-stats > div { display: grid; padding-left: 14px; border-left: 2px solid var(--blue); }
.bbs-stats b { font-family: var(--f-disp); font-size: clamp(30px, 3vw, 44px); font-weight: 600; letter-spacing: -.04em; line-height: 1.1; font-variant-numeric: tabular-nums; }
.bbs-stats span.mono { font-size: 11.5px; color: var(--mu-l); }
.posts { display: grid; gap: 12px; }
.post { position: relative; display: grid; grid-template-columns: 1fr auto; gap: 32px; align-items: start; padding: clamp(24px, 2.6vw, 40px); border-radius: var(--r-lg); background: var(--white); border: 1px solid var(--line-l); transition: border-color .5s; }
.post:hover { border-color: rgba(61,115,221,.4); }
.post-tags { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.ptag { height: 24px; display: inline-flex; align-items: center; padding: 0 9px; border-radius: 3px; font-size: 12px; font-weight: 600; }
.ptag-bug { background: #ffece3; color: #c24a12; } .ptag-feat { background: var(--blue-100); color: var(--blue-700); }
.ptag-done { background: #ddf6ec; color: #0b8a62; } .ptag-wip { background: #fff3dc; color: #a06400; }
.post-id { font-size: 11.5px; color: var(--mu-l); margin-left: 4px; }
.post-title { margin-top: 14px; font-family: var(--f-disp); font-weight: 700; font-size: clamp(19px, 1.6vw, 24px); line-height: 1.4; letter-spacing: -.02em; }
.post-body { margin-top: 10px; color: #545e78; font-size: 14.5px; line-height: 1.8; max-width: 860px; }
.reply { margin-top: 18px; padding: 16px 18px; border-radius: 6px; background: #f1f5fd; font-size: 14px; line-height: 1.8; color: #34405e; border-left: 2px solid var(--blue); max-width: 860px; }
.reply b { display: block; color: var(--blue-700); font-size: 12.5px; margin-bottom: 2px; }
.vote { position: relative; display: grid; justify-items: center; gap: 2px; width: 76px; padding: 14px 0; border-radius: 8px; border: 1px solid var(--line-l); background: #f8faff; transition: background .4s, border-color .4s, color .4s, transform .4s var(--ease); }
.vote:hover { border-color: var(--blue); }
.vote:active { transform: scale(.94); }
.vote svg { width: 20px; height: 20px; color: var(--blue); }
.vote-n { font-family: var(--f-disp); font-size: 22px; font-weight: 600; font-variant-numeric: tabular-nums; }
.vote span { font-size: 11.5px; color: var(--mu-l); }
.vote.is-voted { background: var(--blue); border-color: var(--blue); color: #fff; }
.vote.is-voted svg, .vote.is-voted span { color: #fff; }
.vote-plus { position: absolute; left: 50%; top: 0; font-family: var(--f-mono); font-size: 13px; color: var(--blue); pointer-events: none; }

.partner-sec { padding-bottom: clamp(80px, 9vw, 140px); }
.partner { position: relative; display: grid; grid-template-columns: 5fr 7fr; gap: clamp(32px, 5vw, 80px); padding: clamp(32px, 5vw, 80px); border-radius: var(--r-lg); color: var(--tx-d); }
.partner .eyebrow-dark { color: var(--acc-d); }
.partner .eyebrow-dark .idx { color: var(--acc-d); }
.partner .h2 { font-size: clamp(36px, 4.2vw, 64px); color: var(--tx-d); }
.partner .h2-mute { color: var(--mu-d); }
.partner-desc { margin-top: 20px; color: var(--tx-d2); font-size: 15px; line-height: 1.8; }
.tracks { margin-top: 32px; display: grid; }
.tracks li { display: grid; grid-template-columns: 40px 1fr; gap: 12px; padding: 18px 0; border-top: 1px dashed var(--line-d); }
.tracks i { font-size: 12px; color: var(--acc-d); padding-top: 3px; }
.tracks b { font-size: 16px; font-weight: 600; }
.tracks p { margin-top: 4px; font-size: 14px; color: var(--tx-d2); line-height: 1.7; }
.form { position: relative; background: var(--white); color: var(--tx-l); border-radius: 10px; padding: clamp(24px, 3vw, 44px); display: grid; gap: 14px; box-shadow: 0 40px 80px -40px rgba(2,8,26,.6); }
.form-head { margin-bottom: 10px; padding-bottom: 14px; border-bottom: 1px dashed var(--line-l); }
.form-head p { margin-top: 6px; font-size: 11.5px; color: var(--mu-l); }
.form-tight { padding: 0; box-shadow: none; margin-top: 24px; }
.field { position: relative; display: block; }
.field input, .field textarea { width: 100%; height: 60px; padding: 24px 16px 8px; border-radius: 6px; border: 1px solid rgba(10,20,48,.16); background: #f8faff; color: var(--tx-l); font-size: 15px; outline: none; transition: border-color .3s, background .3s, box-shadow .3s; }
.field textarea { height: auto; min-height: 120px; resize: vertical; padding-top: 30px; line-height: 1.6; }
.field input:focus, .field textarea:focus { border-color: var(--blue); background: #fff; box-shadow: 0 0 0 4px rgba(61,115,221,.14); }
.field > input + span, .field > textarea + span { position: absolute; left: 16px; top: 19px; font-size: 15px; color: var(--mu-l); pointer-events: none; transform-origin: 0 0; transition: transform .45s var(--ease), color .3s; }
.field > input:focus + span, .field > input:not(:placeholder-shown) + span,
.field > textarea:focus + span, .field > textarea:not(:placeholder-shown) + span { transform: translateY(-11px) scale(.76); color: var(--blue-700); }
.field em { position: absolute; left: 16px; top: 31px; right: 16px; font-size: 13.5px; color: #a7aec0; pointer-events: none; opacity: 0; transition: opacity .3s; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.field-area em { top: 34px; }
.field-msg-box { position: relative; width: 100%; }
.field-msg-toggle { display: none; }
.field > input:focus:placeholder-shown ~ em, .field > textarea:focus:placeholder-shown ~ em { opacity: 1; }
.field.is-error input, .field.is-error textarea { border-color: var(--orange); box-shadow: 0 0 0 4px rgba(255,106,43,.12); }
.field.is-error > input + span, .field.is-error > textarea + span { color: #d4500f; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.field-select { padding: 14px 16px 16px; border-radius: 6px; border: 1px solid rgba(10,20,48,.16); background: #f8faff; }
.field-static { display: block; font-size: 11.5px; color: var(--mu-l); margin-bottom: 10px; }
.opts { display: flex; flex-wrap: wrap; gap: 8px; }
.opts label { position: relative; cursor: pointer; }
.opts input { position: absolute; opacity: 0; pointer-events: none; }
.opts span { display: inline-flex; align-items: center; height: 36px; padding: 0 13px; border-radius: 5px; border: 1px solid rgba(10,20,48,.16); font-size: 13px; color: #3e4864; background: #fff; transition: all .35s var(--ease); }
.opts label:hover span { border-color: var(--blue); }
.opts input:checked + span { background: var(--blue); border-color: var(--blue); color: #fff; }
.opts input:focus-visible + span { outline: 2px solid var(--blue); outline-offset: 2px; }
.btn-submit { margin-top: 6px; height: 58px; }
.btn-submit.is-loading .btn-label { opacity: .6; }

/* ==========================================================================
   Footer
   ========================================================================== */
.partner,
.footer .wrap,
.footer .wordmark-wrap,
.foot-legal {
  position: relative;
  z-index: 5;
}
.footer { position: relative; z-index: 2; background: transparent; color: var(--tx-d); padding-top: clamp(120px, 14vw, 220px); overflow: hidden; }
.foot-cta { position: relative; display: grid; justify-items: start; }
.foot-title { margin-top: 24px; font-family: var(--f-disp); font-weight: 700; font-size: clamp(48px, 8vw, 136px); line-height: 1.02; letter-spacing: -.045em; }
.foot-title em { color: var(--acc-d); }
.foot-ctas { display: flex; flex-wrap: wrap; gap: 20px; margin-top: 40px; }
.foot-grid { margin-top: clamp(80px, 10vw, 150px); padding-top: 36px; border-top: 1px solid var(--line-d); display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 32px; }
.foot-brand p { max-width: 380px; color: var(--mu-d); font-size: 14px; line-height: 1.8; }
.foot-brand p.mono { margin-top: 16px; font-size: 12px; }
.foot-brand b { color: var(--tx-d); font-weight: 500; }
.foot-col { display: grid; align-content: start; gap: 10px; font-size: 14px; }
.foot-col p { font-size: 11.5px; color: var(--acc-d2); margin-bottom: 6px; letter-spacing: .1em; }
.foot-col a { color: var(--tx-d3); width: fit-content; background: linear-gradient(currentColor, currentColor) 0 100% / 0 1px no-repeat; transition: background-size .5s var(--ease), color .3s; }
.foot-col a:hover { color: #fff; background-size: 100% 1px; }
.foot-col span { color: var(--mu-d2); }
.wordmark-wrap { position: relative; margin-top: clamp(50px, 7vw, 110px); }
.wordmark { position: relative; display: flex; justify-content: center; margin-bottom: 0; font-family: var(--f-disp); font-weight: 700; font-size: 19vw; line-height: 1.12; overflow: hidden; user-select: none; }
.wordmark span { position: relative; display: inline-block; color: transparent; -webkit-text-stroke: 1px rgba(var(--bl),.55); letter-spacing: 0; }
.wordmark span + span { margin-left: -0.06em; }
.wordmark span::after { content: attr(data-c); position: absolute; left: 0; top: 0; width: calc(100% + 0.05em); height: 100%; color: transparent; -webkit-text-stroke: 0; letter-spacing: 0; background: linear-gradient(180deg, var(--wm-a), var(--wm-b) 50%, rgba(61,115,221,0) 95%); -webkit-background-clip: text; background-clip: text; clip-path: inset(var(--fill, 100%) 0 0 0); }
.wordmark-wrap .dim-h { left: var(--gut); right: var(--gut); top: -26px; --dim-c: var(--acc-d2); }
.foot-legal { display: grid; grid-template-columns: 1fr auto; gap: 16px; align-items: stretch; padding-block: 0 28px; border-top: 1px solid var(--line-d); font-size: 11.5px; color: var(--mu-d2); }
.foot-legal-l { display: flex; flex-direction: column; justify-content: center; gap: 4px; padding-top: 20px; }
.foot-legal-r { display: flex; align-items: center; justify-content: flex-end; padding-top: 20px; }
.totop { color: var(--tx-d); text-decoration: none; transition: color .2s; }
.totop:hover { color: var(--acc-d); }
/* title block 图签 */
.titleblock { display: grid; grid-template-columns: repeat(5, auto); border: 1px solid var(--line-d); border-top: 0; font-family: var(--f-mono); font-size: 10.5px; }
.titleblock div { padding: 8px 14px; border-left: 1px solid var(--line-d); display: grid; gap: 2px; }
.titleblock div:first-child { border-left: 0; }
.titleblock dt { color: var(--acc-d2); font-size: 9px; letter-spacing: .12em; }
.titleblock dd { color: var(--tx-d); }

/* ==========================================================================
   Modals, drawer
   ========================================================================== */
.modal { position: fixed; inset: 0; z-index: 8000; display: grid; place-items: center; padding: 16px; visibility: hidden; pointer-events: none; }
.modal.is-open { visibility: visible; pointer-events: auto; }
.modal-scrim { position: absolute; inset: 0; background: rgba(5,13,36,.65); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); opacity: 0; }
.modal-box { position: relative; width: 100%; max-height: calc(100vh - 32px); max-height: calc(100svh - 32px); overflow: auto; overscroll-behavior: contain; border-radius: 12px; background: #fff; color: var(--tx-l); padding: clamp(24px, 3vw, 40px); box-shadow: 0 60px 120px -30px rgba(2,8,26,.6); opacity: 0; }
.modal-xl { max-width: 980px; } .modal-md { max-width: 560px; } .modal-sm { max-width: 440px; }
.modal-x { position: absolute; right: 16px; top: 16px; z-index: 2; width: 40px; height: 40px; border-radius: 6px; display: grid; place-items: center; background: #eef2fa; color: var(--tx-l); transition: background .3s, transform .6s var(--ease), color .3s; }
.modal-x:hover { background: var(--blue); color: #fff; transform: rotate(90deg); }
.modal-x svg { width: 16px; height: 16px; }
.auth-mark { width: 48px; height: 48px; margin: 4px auto 18px; }
.auth-mark .bm-bg { fill: var(--blue); } .auth-mark .bm-fg { fill: #fff; }
.field-code { display: grid; grid-template-columns: 1fr auto; gap: 10px; }
.code-btn { height: 60px; padding: 0 18px; border-radius: 6px; background: #eef2fa; font-size: 14px; font-weight: 500; white-space: nowrap; transition: background .3s; font-variant-numeric: tabular-nums; }
.code-btn:hover:not(:disabled) { background: var(--blue-100); color: var(--blue-700); }
.code-btn:disabled { color: var(--mu-l); cursor: default; }
.link-btn { display: block; margin: 18px auto 0; font-size: 13.5px; color: var(--blue-700); font-weight: 500; }
.link-btn:hover { text-decoration: underline; text-underline-offset: 4px; }
.mc-head { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; padding-right: 48px; }
.mc-steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 6px; margin: 24px 0 16px; }
.mc-steps li { position: relative; }
.mc-steps button { width: 100%; height: 48px; display: flex; align-items: center; justify-content: center; gap: 8px; border-radius: 6px; background: #f0f3fa; font-size: 13.5px; font-weight: 500; color: #545e78; position: relative; overflow: hidden; isolation: isolate; transition: color .4s, background .4s; }
.mc-steps button::before { content: ""; position: absolute; inset: 0; z-index: -1; background: var(--blue); transform: scaleX(var(--p, 0)); transform-origin: 0 50%; }
.mc-steps button i { font-size: 11px; opacity: .6; }
.mc-steps li.on button { background: var(--navy-2); color: #fff; }
.mc-steps li.done button { background: var(--blue-100); color: var(--blue-700); }
.mc-steps li.done button::before { transform: scaleX(0); }
.mc-view { position: relative; aspect-ratio: 16 / 8.2; border-radius: 8px; overflow: hidden; background: radial-gradient(100% 120% at 70% 0%, #1d3f87, #071230 62%); color: var(--tx-d); display: grid; place-items: center; align-content: center; gap: 6px; text-align: center; padding: 24px; }
.mc-grid { position: absolute; inset: 0; background-image: linear-gradient(rgba(var(--bl),.1) 1px, transparent 1px), linear-gradient(90deg, rgba(var(--bl),.1) 1px, transparent 1px); background-size: 36px 36px; transform: perspective(500px) rotateX(55deg) translateY(30%) scale(2); transform-origin: 50% 100%; animation: gridMove 6s linear infinite; }
@keyframes gridMove { to { background-position: 0 36px; } }
.mc-scan { position: absolute; left: 0; right: 0; height: 30%; top: -30%; background: linear-gradient(transparent, rgba(61,115,221,.22), transparent); animation: scan 3.4s var(--ease-io) infinite; }
@keyframes scan { to { top: 100%; } }
.mc-play { position: relative; width: 72px; height: 72px; border-radius: 50%; display: grid; place-items: center; background: rgba(255,255,255,.1); border: 1px solid rgba(255,255,255,.3); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); color: #fff; margin-bottom: 12px; transition: transform .6s var(--ease), background .3s; }
.mc-play::after { content: ""; position: absolute; inset: -8px; border-radius: 50%; border: 1px solid rgba(var(--bl),.5); animation: pulse 2.2s var(--ease-o) infinite; }
.mc-play:hover { transform: scale(1.08); background: var(--blue); }
.mc-play svg { width: 26px; height: 26px; margin-left: 3px; }
.mc-line { position: relative; font-family: var(--f-disp); font-weight: 700; font-size: clamp(17px, 1.8vw, 22px); }
.mc-sub { position: relative; font-size: 12px; color: var(--mu-d); max-width: 520px; }
.mc-hud { position: absolute; left: 16px; right: 16px; bottom: 14px; display: flex; justify-content: space-between; font-size: 10.5px; color: var(--mu-d); letter-spacing: .1em; }
.mc-foot { display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; margin-top: 20px; font-size: 13.5px; color: var(--mu-l); }
.drawer { position: fixed; inset: 0; z-index: 8000; visibility: hidden; pointer-events: none; }
.drawer.is-open { visibility: visible; pointer-events: auto; }
.drawer-scrim { position: absolute; inset: 0; background: rgba(5,13,36,.55); backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px); opacity: 0; }
.drawer-panel { position: absolute; right: 10px; top: 10px; bottom: 10px; width: min(440px, calc(100vw - 20px)); border-radius: 12px; background: #fff; color: var(--tx-l); padding: 28px; display: flex; flex-direction: column; gap: 20px; transform: translateX(110%); }
.drawer-head { display: flex; justify-content: space-between; align-items: center; }
.drawer-head .modal-x { position: static; }
.drawer-head .h4 { display: flex; align-items: center; gap: 8px; }
.drawer-list { display: grid; gap: 10px; align-content: start; flex: 1; }
.mine { padding: 18px; border-radius: 8px; background: #f3f6fd; border: 1px solid var(--line-l); }
.mine-top { display: flex; justify-content: space-between; align-items: center; gap: 12px; font-size: 14.5px; }
.mine-bar { margin: 14px 0 8px; height: 4px; background: #e1e7f4; overflow: hidden; }
.mine-bar i { display: block; height: 100%; width: var(--p); background: linear-gradient(90deg, var(--blue), var(--acc-d)); transform-origin: 0 50%; }
.mine p { font-size: 11.5px; color: var(--mu-l); }

/* ==========================================================================
   Animation initial states
   ========================================================================== */
.anim .hero .ln-in, .anim .hero [data-hero-in], .anim .hero-hud, .anim .scroll-hint { visibility: hidden; }
.anim [data-reveal] { opacity: 0; }
.anim [data-split] .ln-in { visibility: hidden; }
.anim .dim .dim-line { transform: scaleX(0); }
.anim .dim-v .dim-line { transform: scaleY(0); }
.anim .dim .dim-a, .anim .dim .dim-label { opacity: 0; }

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 1180px) {
  .nav-links { display: none; }
  .burger { display: inline-block; }
  .nav-inner { grid-template-columns: 1fr auto; }
  .nav-mine span { display: none; }
  .hero-copy { grid-column: 1 / span 6; }
  .hero-stats { grid-column: 7 / span 6; grid-template-columns: repeat(2, 1fr); }
  .stat:nth-child(3) { border-left: 0; }
  .stat:nth-child(n+3) { border-top: 1px solid var(--line-d); }
  .console-main { grid-template-columns: 190px 1fr; }
  .con-tele { grid-column: 1 / -1; border-left: 0; border-top: 1px solid var(--line-d); display: grid; grid-template-columns: 1fr 1fr; align-items: start; }
  .tele-title, .tele-chip { grid-column: 1 / -1; }
  .titleblock { grid-template-columns: repeat(2, auto); }
  .titleblock div:nth-child(3) { border-left: 0; }
  .titleblock div:nth-child(n+3) { border-top: 1px solid var(--line-d); }
}
@media (max-width: 1080px) {
  .cmx { grid-template-columns: 1fr; gap: 14px; }
  .cmx-side { position: relative; top: auto; max-height: none; }
  .cmx-side-head { cursor: pointer; }
  .cmx-caret { display: block; }
  .cmx-side.is-collapsed .cmx-caret { transform: rotate(-45deg); margin-top: 0; }
  .cmx-side.is-collapsed .cmx-side-head { border-bottom-color: transparent; }
  .cmx-side.is-collapsed .cmx-tree { display: none; }
  .cmx-tree { max-height: min(60vh, 520px); }
}
@media (max-width: 900px) {
  :root { --nav-h: 64px; }
  .brand-tag { display: none; }
  .nav-actions .btn-line { display: none; }
  .hero { padding-top: calc(var(--nav-h) + 24px); }
  .hero-titlebox { padding-top: 28vh; }
  .hero-titlebox .dim-h { top: calc(28vh - 30px); }
  .hero-titlebox .dim-v { display: none; }
  .hero-title { font-size: clamp(64px, 19vw, 120px); }
  .hero-foot { grid-template-columns: 1fr; }
  .hero-copy, .hero-stats { grid-column: 1 / -1; }
  .hero-stats { grid-template-columns: repeat(4, 1fr); }
  .stat:nth-child(3) { border-left: 1px solid var(--line-d); }
  .stat:nth-child(n+3) { border-top: 0; }
  .stat { padding: 24px 10px 12px; }
  .stat dt { font-size: 11px; }
  .hud-joints, .hud-live { display: none; }
  .hud-station { top: calc(var(--nav-h) + 24px); }
  .zones-y, .zones-x.b { display: none; }
  .loop-pin { height: auto; min-height: 100svh; padding: calc(var(--nav-h) + 24px) 0 48px; }
  .loop-grid { grid-template-columns: 1fr; padding-top: 0; }
  .loop-left, .loop-right { grid-column: 1 / -1; }
  .loop-right { height: 300px; order: -1; margin-bottom: 8px; }
  .loop-steps { min-height: 230px; }
  .hcard { width: min(280px, 78vw); padding: 14px; }
  .hcard::before, .hcard::after { display: none; }
  .hcard-volt, .hcard-lesson, .hcard-alert, .hcard-badge { left: 50%; right: auto; top: auto; bottom: 8px; margin-left: calc(min(280px, 78vw) / -2); }
  .volt-read b { font-size: 40px; }
  .bento { grid-template-columns: 1fr; }
  .bcard-a, .bcard-b, .bcard-c, .bcard-d, .bcard-s { grid-column: 1 / -1; }
  .bcard-a { min-height: 520px; }
  .dash-stats { grid-template-columns: 1fr; }
  .dash-stats > div { border-right: 0; border-bottom: 1px solid var(--line-l); display: grid; grid-template-columns: 1fr auto; column-gap: 12px; align-items: baseline; }
  .dash-stats > div:last-child { border-bottom: 0; }
  .dash-stats p, .dash-stats em { grid-column: 1 / -1; }
  .feed li { grid-template-columns: auto 1fr; }
  .feed .r { grid-column: 2; text-align: left; }
  .url { display: none; }
  .cmx-toolbar .seg { max-width: 100%; overflow-x: auto; scrollbar-width: none; }
  .cmx-toolbar .seg::-webkit-scrollbar { display: none; }
  .cmx-search { flex-basis: 100%; max-width: none; }
  .cmx-board { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .cmx-majors { grid-template-columns: 1fr; }
  .cmx-sw { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .console-main { grid-template-columns: 1fr; }
  .con-tabs { flex-direction: row; overflow-x: auto; border-right: 0; border-bottom: 1px solid var(--line-d); scrollbar-width: none; }
  .con-tabs::-webkit-scrollbar { display: none; }
  .con-tabs button { flex: none; height: 40px; font-size: 13px; }
  .con-ind { display: none; }
  .con-tabs button[aria-selected="true"] { background: rgba(61,115,221,.24); }
  .con-term { min-height: 380px; padding: 18px; font-size: 12.5px; }
  .cb-l span { display: none; }
  .chan-grid, .dl-grid { grid-template-columns: 1fr; }
  .chan { min-height: 0; }
  .partner { grid-template-columns: 1fr; }
  .field-row { grid-template-columns: 1fr; }
  .post { grid-template-columns: 1fr; gap: 18px; }
  .vote { grid-auto-flow: column; width: auto; justify-self: start; padding: 10px 18px; gap: 8px; align-items: center; }
  .vote-n { font-size: 17px; }
  .bbs-stats { width: 100%; justify-content: space-between; }
  .foot-grid { grid-template-columns: 1fr 1fr; }
  .foot-brand { grid-column: 1 / -1; }
  .foot-legal { grid-template-columns: 1fr; }
  .foot-legal-r { justify-content: flex-start; padding-top: 6px; }
  .mc-steps { grid-template-columns: repeat(5, minmax(84px, 1fr)); overflow-x: auto; }
  .mc-steps button { font-size: 12.5px; }
  .mc-view { aspect-ratio: 4 / 3.4; }
  .sheet-tag { display: none; }
}
@media (max-width: 600px) {
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .stat:nth-child(3) { border-left: 0; }
  .stat:nth-child(n+3) { border-top: 1px solid var(--line-d); }
  .hero-ctas .btn { flex: 1; padding: 0 16px; }
  .hero-desc { font-size: 14.5px; }
  .hero-titlebox { width: auto; }
  .logos-note { display: none; }
  .seg button { padding: 0 10px; font-size: 12.5px; }
  .cmx-stats { grid-template-columns: repeat(2, minmax(0, 1fr)); width: 100%; }
  .cmx-stats > div:nth-child(3) { border-left: 0; }
  .cmx-stats > div:nth-child(n+3) { border-top: 1px dashed var(--line-l); }
  .cmx-toolbar .seg { width: 100%; }
  .cmx-path { margin: 14px 0 12px; }
  .cmx-board { grid-template-columns: 1fr; }
  .cmx-sw { grid-template-columns: 1fr; }
  .cmx-sw .ccard { min-height: 0; }
  .cmx-majors { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .cmx-major { flex-wrap: wrap; min-height: 64px; padding: 10px; background: #f6f8fc; }
  .cmx-major-name { flex-basis: 100%; }
  .cmx-grid { grid-template-columns: 1fr; gap: 10px; }
  .ccell { min-height: 0; }
  .chan .h3 { padding-top: 48px; }
  .bbs-stats .btn { display: none; }
  .modal { align-items: end; padding: 8px; }
  .chan-top { flex-direction: column; align-items: flex-start; }
  .hud-station { display: none; }
  .ccard-foot { flex-direction: column; align-items: stretch; gap: 14px; }
  .ccard-btns > * { flex: 1; }
  .globe-tag { font-size: 10.5px; padding: 4px 8px; }
  .dwg-frame { left: 8px; right: 8px; bottom: 8px; }
  .zones-x { display: none; }
  .titleblock { grid-template-columns: 1fr 1fr; }

  /* 防止 iOS Safari 获得焦点时强制缩放 (iOS Auto-Zoom) */
  input:not([type="checkbox"]):not([type="radio"]), 
  textarea, 
  select, 
  .field input, 
  .field textarea {
    font-size: 16px !important;
  }

  /* 课程演示弹窗步骤条平滑横向自适应 */
  .mc-steps {
    display: flex;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    gap: 6px;
    padding-bottom: 4px;
  }
  .mc-steps::-webkit-scrollbar { display: none; }
  .mc-steps button {
    flex: 0 0 auto;
    white-space: nowrap;
    padding: 0 12px;
    font-size: 12px;
    height: 36px;
  }

  /* 触控热区补充与易触达性优化 (Touch Targets) */
  .neg-link-more {
    min-height: 42px;
  }
  .neg-win-btn {
    min-width: 32px;
    min-height: 28px;
  }
  .modal-close {
    width: 38px;
    height: 38px;
  }
}

/* 超矮视口 (如 iPhone SE 667px、横屏或软键盘弹出状态) 竖向紧凑适配 */
@media (max-height: 720px) and (max-width: 900px) {
  .neg-cover-body {
    padding-top: 18px;
    gap: 14px;
  }
  .neg-hero-title.is-main-cn {
    font-size: clamp(22px, 5.5vw, 30px);
    margin-bottom: 4px;
  }
  .neg-hero-eng.is-sub-eng {
    font-size: clamp(16px, 4vw, 22px);
    margin-bottom: 6px;
  }
  .neg-hero-sub {
    font-size: 13px;
    margin-bottom: 12px;
  }
  .neg-hero-actions {
    gap: 14px;
  }
  .neg-btn-launch {
    height: 38px;
    padding: 0 16px;
    font-size: 13px;
  }
  .neg-device-stage {
    max-width: 300px;
  }
  .neg-cover-footer {
    padding-bottom: 8px;
  }
  .neg-scroll-down {
    height: 32px;
    font-size: 11px;
    padding: 0 14px;
  }
  .loop-right {
    height: 220px;
  }
}
@media (hover: none) { .cursor { display: none !important; } }
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
  .grain { display: none; }
}

/* ---------- Blueprint grid images (last, so they layer onto any component) ---------- */
.bp-dark {
  background-image:
    linear-gradient(var(--grid-d) 1px, transparent 1px), linear-gradient(90deg, var(--grid-d) 1px, transparent 1px),
    linear-gradient(var(--grid-d2) 1px, transparent 1px), linear-gradient(90deg, var(--grid-d2) 1px, transparent 1px);
  background-size: 96px 96px, 96px 96px, 24px 24px, 24px 24px;
  background-position: -1px -1px;
}
.bp-light {
  background-image:
    linear-gradient(var(--grid-l) 1px, transparent 1px), linear-gradient(90deg, var(--grid-l) 1px, transparent 1px),
    linear-gradient(var(--grid-l2) 1px, transparent 1px), linear-gradient(90deg, var(--grid-l2) 1px, transparent 1px);
  background-size: 96px 96px, 96px 96px, 24px 24px, 24px 24px;
  background-position: -1px -1px;
}
.bcard-c, .chan-b, .partner { background-color: var(--navy-2); }
.bcard-c.bp-dark, .chan-b.bp-dark, .partner.bp-dark { background-size: 48px 48px, 48px 48px, 12px 12px, 12px 12px; }

/* ==========================================================================
   LIGHT MODE · 亮色模式（蓝图纸）
   Chapters → light cyanotype paper · Sheets → white drafting paper
   Dark accent panels → solid 匠造蓝 blueprint · Console → stays a dark device
   ========================================================================== */
:root[data-mode="light"] {
  --navy: #e8eef9;
  --paper: #fafbfe;
  --tx-d: #0a1430;
  --mu-d: #5a6686;
  --line-d: rgba(10, 20, 48, .12);
  --acc-d: #2a56b3;
  --acc-d2: #3d73dd;
  --bl: 61,115,221;
  --nv: 255,255,255;
  --nv2: 255,255,255;
  --tx-d2: #3a4666;
  --tx-d3: #1d2846;
  --mu-d2: #7380a0;
  --grid-d: rgba(61, 115, 221, .12);
  --grid-d2: rgba(61, 115, 221, .05);
  --sheet-shadow: 0 -24px 60px -28px rgba(29, 63, 135, .22), 0 0 0 1px rgba(61, 115, 221, .14);
  --hcard-shadow: 0 30px 60px -30px rgba(29, 63, 135, .38);
  --wm-a: rgba(42, 86, 179, .95);
  --wm-b: rgba(61, 115, 221, .78);
  color-scheme: light;
}
:root { color-scheme: dark; }

/* components that stay dark in light mode */
[data-mode="light"] .console, [data-mode="light"] .toast, [data-mode="light"] .mc-view {
  --navy: #071230; --tx-d: #eaf0fc; --mu-d: #8293b8; --line-d: rgba(150, 180, 241, .16);
  --acc-d: #96b4f1; --acc-d2: #6a95ea; --bl: 150,180,241; --nv: 7,18,48; --nv2: 11,26,61;
  --tx-d2: #a9b7d6; --tx-d3: #c3cee8; --mu-d2: #63739a;
  --grid-d: rgba(150, 180, 241, .07); --grid-d2: rgba(150, 180, 241, .035);
}
/* solid blueprint panels */
[data-mode="light"] .bcard-c, [data-mode="light"] .chan-b, [data-mode="light"] .partner {
  background-color: #2f62cc;
  --tx-d: #ffffff; --mu-d: rgba(255, 255, 255, .78); --line-d: rgba(255, 255, 255, .24);
  --acc-d: #dce7ff; --acc-d2: #c6d7f8; --bl: 255,255,255; --nv: 29,63,135; --nv2: 29,63,135;
  --tx-d2: rgba(255, 255, 255, .88); --tx-d3: #ffffff; --mu-d2: rgba(255, 255, 255, .62);
  --grid-d: rgba(255, 255, 255, .13); --grid-d2: rgba(255, 255, 255, .055);
}
[data-mode="light"] .bcard-c::before { background: radial-gradient(420px circle at var(--mx) var(--my), rgba(255, 255, 255, .18), transparent 60%); }
[data-mode="light"] .chan-b::before { background: radial-gradient(500px circle at var(--mx) var(--my), rgba(255, 255, 255, .16), transparent 60%); }
[data-mode="light"] .bcard-c .plate { background-image: linear-gradient(rgba(255,255,255,.16) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.16) 1px, transparent 1px), linear-gradient(135deg, rgba(255,255,255,.2), rgba(255,255,255,.04)); }
[data-mode="light"] .bcard-c .plate.is-hot { background-color: #fff; background-image: linear-gradient(rgba(61,115,221,.16) 1px, transparent 1px), linear-gradient(90deg, rgba(61,115,221,.16) 1px, transparent 1px); border-color: #fff; box-shadow: 0 0 44px rgba(255, 255, 255, .6); }
[data-mode="light"] .bcard-c .plate.is-hot span { color: var(--blue-800); }
[data-mode="light"] .chan-b .btn-light { --b-fill: var(--navy-2); }
[data-mode="light"] .partner .form { box-shadow: 0 40px 80px -40px rgba(7, 18, 48, .55); }

/* chapter surfaces */
[data-mode="light"] .hero::before { background: radial-gradient(60% 55% at 74% 46%, rgba(255, 255, 255, .75), transparent 70%), radial-gradient(40% 40% at 8% 100%, rgba(61, 115, 221, .1), transparent 70%); }
[data-mode="light"] .console-sec::before { background: radial-gradient(closest-side, rgba(61, 115, 221, .16), transparent); }
[data-mode="light"] .console { box-shadow: 0 60px 120px -40px rgba(29, 63, 135, .5), inset 0 1px 0 rgba(255, 255, 255, .05); }
[data-mode="light"] .hcard { border-color: rgba(61, 115, 221, .28); }
[data-mode="light"] .hcard-alert { background: rgba(255, 244, 237, .9); border-color: rgba(255, 106, 43, .5); }
[data-mode="light"] .hcard-alert .hcard-head { color: #c24a12; border-bottom-color: rgba(255, 106, 43, .3); }
[data-mode="light"] .alert-text { color: #5a230a; }
[data-mode="light"] .alert-meta { color: #a35a35; border-top-color: rgba(255, 106, 43, .25); }
[data-mode="light"] .alert-meta b { color: #3b1607; }
[data-mode="light"] .badge-ico { filter: drop-shadow(0 6px 14px rgba(61, 115, 221, .35)); }
[data-mode="light"] .stat dd small, [data-mode="light"] .hero-sub em { color: var(--blue); }
[data-mode="light"] .grain { opacity: .03; }
[data-mode="light"] .btn-primary { --b-fill: var(--navy-2); --b-ftx: #fff; }
[data-mode="light"] .console .btn-primary { --b-fill: #fff; --b-ftx: var(--blue-800); }
[data-mode="light"] .wordmark span { -webkit-text-stroke-color: rgba(61, 115, 221, .45); }
[data-mode="light"] ::-webkit-scrollbar-thumb { background: var(--blue-300); }
[data-mode="light"] .sheet .btn-primary,
[data-mode="light"] .partner .form .btn-submit {
  --b-fill: var(--navy-2);
  --b-ftx: #fff;
}
[data-mode="light"] .partner .form .btn-submit:hover .btn-ico {
  background: rgba(255, 255, 255, .16);
}

/* ==========================================================================
   DARK BLUEPRINT MODE · 纯正暗色蓝图模式 (方案 1)
   消除“亮暗斑马纹”：Sheet A / B 由亮色图纸转为沉浸式深蓝工程蓝图 (#071230 / #0b1a3d)
   所有内部组件（生态展台、高校跑马灯、Bento架构卡、课程卡、双通道、下载包、论坛贴、表单、弹窗抽屉）
   均自适应为纯正暗色蓝图质感，亮色模式下 100% 保持原有白底实训纸质感不变。
   ========================================================================== */

/* 1. Sheet 蓝图底板与全局暗色变量映射（暗色下无缝融合，消除分界线与斑马缝） */
[data-mode="dark"] .sheet,
:root:not([data-mode="light"]) .sheet {
  --tx-l: var(--tx-d);
  --mu-l: var(--mu-d);
  --line-l: rgba(150, 180, 241, .16);
  --white: #0b1a3d;
  color: var(--tx-d);
  box-shadow: none;
  border-radius: 0;
  background: transparent !important;
}

/* 2. Sheet 蓝图底色与网格线（完全透明，透出 body 全局连续蓝图网格） */
[data-mode="dark"] .sheet.bp-light,
:root:not([data-mode="light"]) .sheet.bp-light {
  background: transparent !important;
  background-image: none !important;
}

/* 3. 标尺线与图纸元标签 */
[data-mode="dark"] .sheet .ruler,
:root:not([data-mode="light"]) .sheet .ruler {
  border-bottom-color: rgba(150, 180, 241, .16);
  color: var(--acc-d);
}
[data-mode="dark"] .sheet .ruler span,
:root:not([data-mode="light"]) .sheet .ruler span {
  color: var(--acc-d2);
  opacity: .85;
}
[data-mode="dark"] .sheet-tag,
:root:not([data-mode="light"]) .sheet-tag {
  color: var(--acc-d);
  opacity: .75;
}

/* 4. 标题与说明文案 */
[data-mode="dark"] .sheet .eyebrow-dark,
:root:not([data-mode="light"]) .sheet .eyebrow-dark {
  color: var(--acc-d);
}
[data-mode="dark"] .sheet .eyebrow-dark .idx,
:root:not([data-mode="light"]) .sheet .eyebrow-dark .idx {
  color: var(--cyan);
  border-color: rgba(127, 214, 255, .35);
}
[data-mode="dark"] .sheet .h2,
:root:not([data-mode="light"]) .sheet .h2 {
  color: var(--tx-d);
}
[data-mode="dark"] .sheet .h2-mute,
:root:not([data-mode="light"]) .sheet .h2-mute {
  color: var(--mu-d);
}
[data-mode="dark"] .sheet .sec-aside,
:root:not([data-mode="light"]) .sheet .sec-aside {
  color: var(--mu-d);
}
[data-mode="dark"] .sheet .logos-note,
:root:not([data-mode="light"]) .sheet .logos-note {
  color: var(--mu-d);
}

/* 5. 生态伙伴展台 (Eco Cards) 与合作院校轨道 (School Rail) */
[data-mode="dark"] .eco-card,
:root:not([data-mode="light"]) .eco-card {
  background: rgba(11, 26, 61, .82);
  border-color: rgba(61, 115, 221, .28);
  box-shadow: 0 8px 24px -10px rgba(0, 0, 0, .55);
}
[data-mode="dark"] .eco-card::before,
:root:not([data-mode="light"]) .eco-card::before {
  background: radial-gradient(320px circle at var(--mx) var(--my), rgba(61, 115, 221, .22), transparent 65%);
}
[data-mode="dark"] .eco-card:hover,
:root:not([data-mode="light"]) .eco-card:hover {
  border-color: rgba(127, 214, 255, .5);
  box-shadow: 0 16px 40px -12px rgba(61, 115, 221, .28);
}
[data-mode="dark"] .eco-card-title,
:root:not([data-mode="light"]) .eco-card-title {
  color: #fff;
}
[data-mode="dark"] .eco-card-desc,
:root:not([data-mode="light"]) .eco-card-desc {
  color: #94a3b8;
  border-top-color: rgba(150, 180, 241, .14);
}
[data-mode="dark"] .eco-card-pill,
:root:not([data-mode="light"]) .eco-card-pill {
  color: var(--cyan);
  border-color: rgba(127, 214, 255, .35);
  background: rgba(61, 115, 221, .14);
}
[data-mode="dark"] .eco-card-tag,
:root:not([data-mode="light"]) .eco-card-tag {
  color: #94a3b8;
  background: rgba(255, 255, 255, .06);
  border-color: rgba(255, 255, 255, .1);
}
[data-mode="dark"] .eco-card-ico-box,
:root:not([data-mode="light"]) .eco-card-ico-box {
  background: linear-gradient(135deg, rgba(61, 115, 221, .22), rgba(61, 115, 221, .08));
  border-color: rgba(61, 115, 221, .36);
  color: var(--cyan);
}
[data-mode="dark"] .partner-school-rail,
[data-mode="dark"] .partners-tri-rail,
:root:not([data-mode="light"]) .partner-school-rail,
:root:not([data-mode="light"]) .partners-tri-rail {
  background: rgba(11, 26, 61, .65);
  border-color: rgba(61, 115, 221, .24);
  box-shadow: 0 12px 32px -16px rgba(0, 0, 0, .5);
}
[data-mode="dark"] .partner-school-rail .rail-tag,
[data-mode="dark"] .partners-tri-rail .rail-tag,
:root:not([data-mode="light"]) .partner-school-rail .rail-tag,
:root:not([data-mode="light"]) .partners-tri-rail .rail-tag {
  background: rgba(11, 26, 61, .94);
  border-right-color: rgba(61, 115, 221, .24);
  box-shadow: 4px 0 16px -6px rgba(0, 0, 0, .4);
}
[data-mode="dark"] .rail-tag-label,
:root:not([data-mode="light"]) .rail-tag-label {
  color: #fff;
}
[data-mode="dark"] .rail-tag-sub,
:root:not([data-mode="light"]) .rail-tag-sub {
  color: var(--mu-d);
}
[data-mode="dark"] .partner-rail-row,
:root:not([data-mode="light"]) .partner-rail-row {
  border-bottom-color: rgba(61, 115, 221, .2);
}
[data-mode="dark"] .sheet .marquee,
:root:not([data-mode="light"]) .sheet .marquee {
  background: rgba(7, 18, 48, .45);
  border-block-color: rgba(61, 115, 221, .2);
}
[data-mode="dark"] .marquee-list li,
:root:not([data-mode="light"]) .marquee-list li {
  color: #8293b8;
  border-right-color: rgba(61, 115, 221, .2);
}
[data-mode="dark"] .marquee-list li:hover,
:root:not([data-mode="light"]) .marquee-list li:hover {
  color: var(--cyan);
}
[data-mode="dark"] .marquee-list svg,
:root:not([data-mode="light"]) .marquee-list svg {
  color: var(--cyan);
  opacity: .9;
}

/* 6. Bento 架构卡片与微组件 */
[data-mode="dark"] .bcard,
:root:not([data-mode="light"]) .bcard {
  background: rgba(11, 26, 61, .88);
  border-color: rgba(61, 115, 221, .24);
  color: var(--tx-d);
  box-shadow: 0 16px 40px -20px rgba(0, 0, 0, .55);
}
[data-mode="dark"] .bcard::before,
:root:not([data-mode="light"]) .bcard::before {
  background: radial-gradient(420px circle at var(--mx) var(--my), rgba(61, 115, 221, .22), transparent 60%);
}
[data-mode="dark"] .bcard:hover,
:root:not([data-mode="light"]) .bcard:hover {
  border-color: rgba(127, 214, 255, .45);
  box-shadow: 0 30px 60px -30px rgba(61, 115, 221, .35);
}
[data-mode="dark"] .bcard-idx,
:root:not([data-mode="light"]) .bcard-idx {
  color: var(--cyan);
}
[data-mode="dark"] .bcard-desc,
:root:not([data-mode="light"]) .bcard-desc {
  color: var(--mu-d);
}
[data-mode="dark"] .bcard .h3,
[data-mode="dark"] .bcard .h4,
:root:not([data-mode="light"]) .bcard .h3,
:root:not([data-mode="light"]) .bcard .h4 {
  color: #fff;
}
[data-mode="dark"] .bcard-a,
:root:not([data-mode="light"]) .bcard-a {
  background-color: #0d1e47;
  border-color: rgba(61, 115, 221, .32);
}
[data-mode="dark"] .bcard-a.bp-light,
:root:not([data-mode="light"]) .bcard-a.bp-light {
  background-color: #0d1e47;
  background-image:
    linear-gradient(var(--grid-d) 1px, transparent 1px), linear-gradient(90deg, var(--grid-d) 1px, transparent 1px),
    linear-gradient(var(--grid-d2) 1px, transparent 1px), linear-gradient(90deg, var(--grid-d2) 1px, transparent 1px);
}
[data-mode="dark"] .bcard-c,
:root:not([data-mode="light"]) .bcard-c {
  background-color: var(--navy-2);
  border-color: transparent;
}
[data-mode="dark"] .bcard-s .s-num,
:root:not([data-mode="light"]) .bcard-s .s-num {
  color: var(--cyan);
}
[data-mode="dark"] .bcard-s .s-ico,
:root:not([data-mode="light"]) .bcard-s .s-ico {
  color: var(--acc-d2);
}
[data-mode="dark"] .globe-tag,
:root:not([data-mode="light"]) .globe-tag {
  background: rgba(11, 26, 61, .92);
  border-color: rgba(61, 115, 221, .4);
  color: var(--tx-d);
  box-shadow: 0 10px 24px -12px rgba(0, 0, 0, .6);
}
[data-mode="dark"] .globe-tag i,
:root:not([data-mode="light"]) .globe-tag i {
  background: var(--cyan);
}
[data-mode="dark"] .widget,
:root:not([data-mode="light"]) .widget {
  background: #091738;
  border-color: rgba(61, 115, 221, .25);
  color: var(--tx-d);
  box-shadow: 0 20px 40px -20px rgba(0, 0, 0, .6);
}
[data-mode="dark"] .widget-head,
:root:not([data-mode="light"]) .widget-head {
  color: var(--mu-d);
}
[data-mode="dark"] .widget-ai,
:root:not([data-mode="light"]) .widget-ai {
  background: #0b1a3d;
}
[data-mode="dark"] .ai-count b,
:root:not([data-mode="light"]) .ai-count b {
  color: #fff;
}
[data-mode="dark"] .ai-count span,
:root:not([data-mode="light"]) .ai-count span {
  color: var(--mu-d);
}
[data-mode="dark"] .waves,
:root:not([data-mode="light"]) .waves {
  border-color: rgba(61, 115, 221, .22);
  background-image: linear-gradient(var(--grid-d) 1px, transparent 1px), linear-gradient(90deg, var(--grid-d) 1px, transparent 1px);
}
[data-mode="dark"] .widget-dash .widget-head,
:root:not([data-mode="light"]) .widget-dash .widget-head {
  background: #0c1c42;
  border-bottom-color: rgba(61, 115, 221, .2);
}
[data-mode="dark"] .widget-dash .widget-head span:first-child,
:root:not([data-mode="light"]) .widget-dash .widget-head span:first-child {
  color: var(--tx-d);
}
[data-mode="dark"] .url,
:root:not([data-mode="light"]) .url {
  background: rgba(61, 115, 221, .15);
  color: var(--acc-d);
}
[data-mode="dark"] .dash-stats,
:root:not([data-mode="light"]) .dash-stats {
  border-bottom-color: rgba(61, 115, 221, .2);
}
[data-mode="dark"] .dash-stats > div,
:root:not([data-mode="light"]) .dash-stats > div {
  border-right-color: rgba(61, 115, 221, .2);
}
[data-mode="dark"] .dash-stats p,
[data-mode="dark"] .dash-stats small,
:root:not([data-mode="light"]) .dash-stats p,
:root:not([data-mode="light"]) .dash-stats small {
  color: var(--mu-d);
}
[data-mode="dark"] .dash-stats b,
:root:not([data-mode="light"]) .dash-stats b {
  color: #fff;
}
[data-mode="dark"] .feed li:hover,
:root:not([data-mode="light"]) .feed li:hover {
  background: rgba(61, 115, 221, .14);
}
[data-mode="dark"] .feed b,
:root:not([data-mode="light"]) .feed b {
  color: #fff;
}
[data-mode="dark"] .feed small,
:root:not([data-mode="light"]) .feed small {
  color: var(--mu-d);
}
[data-mode="dark"] .av-v,
:root:not([data-mode="light"]) .av-v {
  background: rgba(61, 115, 221, .22);
  color: var(--cyan);
}
[data-mode="dark"] .av-i,
:root:not([data-mode="light"]) .av-i {
  background: rgba(22, 119, 184, .22);
  color: #7ad1f5;
}
[data-mode="dark"] .av-c,
:root:not([data-mode="light"]) .av-c {
  background: rgba(201, 74, 18, .22);
  color: #ff9d75;
}
[data-mode="dark"] .av-g,
:root:not([data-mode="light"]) .av-g {
  background: rgba(14, 154, 112, .22);
  color: #64e3b7;
}

/* 7. 专业课程矩阵 (Course Matrix & Tree in Dark Mode) */
/* 7.1 规模指标条 (Stats Bar) */
[data-mode="dark"] .cmx-stats,
:root:not([data-mode="light"]) .cmx-stats {
  background: rgba(11, 26, 61, .78);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-color: rgba(61, 115, 221, .35);
  box-shadow: 0 12px 32px -12px rgba(0, 0, 0, .5);
}
[data-mode="dark"] .cmx-stats > div,
:root:not([data-mode="light"]) .cmx-stats > div {
  border-left-color: rgba(150, 180, 241, .16);
}
[data-mode="dark"] .cmx-stats dt,
:root:not([data-mode="light"]) .cmx-stats dt {
  color: var(--mu-d);
}
[data-mode="dark"] .cmx-stats dd,
:root:not([data-mode="light"]) .cmx-stats dd {
  color: #fff;
}
[data-mode="dark"] .cmx-stats .is-live dd,
:root:not([data-mode="light"]) .cmx-stats .is-live dd {
  color: var(--cyan);
  text-shadow: 0 0 16px rgba(127, 214, 255, .35);
}

/* 7.2 左侧专业分类树 (Side Tree) */
[data-mode="dark"] .cmx-side,
:root:not([data-mode="light"]) .cmx-side {
  background: rgba(11, 26, 61, .78);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-color: rgba(61, 115, 221, .3);
  box-shadow: 0 16px 40px -16px rgba(0, 0, 0, .55);
}
[data-mode="dark"] .cmx-side-head,
:root:not([data-mode="light"]) .cmx-side-head {
  border-bottom-color: rgba(61, 115, 221, .25);
}
[data-mode="dark"] .cmx-side-ttl,
:root:not([data-mode="light"]) .cmx-side-ttl {
  color: var(--tx-d);
}
[data-mode="dark"] .cmx-side-cur,
:root:not([data-mode="light"]) .cmx-side-cur {
  color: var(--cyan);
}
[data-mode="dark"] .cmx-caret,
:root:not([data-mode="light"]) .cmx-caret {
  border-right-color: var(--mu-d);
  border-bottom-color: var(--mu-d);
}
[data-mode="dark"] .cmx-tree-cap,
:root:not([data-mode="light"]) .cmx-tree-cap {
  color: var(--mu-d);
}
[data-mode="dark"] .cmx-tog,
:root:not([data-mode="light"]) .cmx-tog {
  color: #7d8fae;
}
[data-mode="dark"] .cmx-tog:hover,
:root:not([data-mode="light"]) .cmx-tog:hover {
  color: var(--cyan);
}
[data-mode="dark"] .cmx-row,
:root:not([data-mode="light"]) .cmx-row {
  color: var(--tx-d);
}
[data-mode="dark"] .cmx-row:hover,
:root:not([data-mode="light"]) .cmx-row:hover {
  background: rgba(61, 115, 221, .16);
  color: #fff;
}
[data-mode="dark"] .cmx-row.is-path,
:root:not([data-mode="light"]) .cmx-row.is-path {
  color: var(--cyan);
}
[data-mode="dark"] .cmx-row[aria-current="true"],
:root:not([data-mode="light"]) .cmx-row[aria-current="true"] {
  background: rgba(61, 115, 221, .28);
  color: #fff;
  box-shadow: inset 3px 0 0 var(--cyan);
  border: 1px solid rgba(127, 214, 255, .3);
}
[data-mode="dark"] .cmx-n,
:root:not([data-mode="light"]) .cmx-n {
  background: rgba(255, 255, 255, .08);
  color: var(--mu-d);
}
[data-mode="dark"] .cmx-row[aria-current="true"] .cmx-n,
:root:not([data-mode="light"]) .cmx-row[aria-current="true"] .cmx-n {
  background: var(--blue);
  color: #fff;
}
[data-mode="dark"] .cmx-node.is-leaf .cmx-row,
:root:not([data-mode="light"]) .cmx-node.is-leaf .cmx-row {
  color: var(--mu-d);
}
[data-mode="dark"] .cmx-node.is-leaf .cmx-row:hover,
:root:not([data-mode="light"]) .cmx-node.is-leaf .cmx-row:hover {
  color: #fff;
}
[data-mode="dark"] .cmx-node.is-leaf .cmx-row[aria-current="true"],
:root:not([data-mode="light"]) .cmx-node.is-leaf .cmx-row[aria-current="true"] {
  color: #fff;
}
[data-mode="dark"] .cmx-kids > ul,
:root:not([data-mode="light"]) .cmx-kids > ul {
  border-left-color: rgba(61, 115, 221, .25);
}

/* 7.3 工具栏与搜索框 (Toolbar & Search) */
[data-mode="dark"] .seg,
:root:not([data-mode="light"]) .seg {
  background: rgba(11, 26, 61, .75);
  border-color: rgba(61, 115, 221, .3);
}
[data-mode="dark"] .seg button,
:root:not([data-mode="light"]) .seg button {
  color: var(--mu-d);
}
[data-mode="dark"] .seg button:hover,
:root:not([data-mode="light"]) .seg button:hover {
  color: #fff;
}
[data-mode="dark"] .seg button[aria-selected="true"],
:root:not([data-mode="light"]) .seg button[aria-selected="true"] {
  color: #fff;
}
[data-mode="dark"] .cmx-search,
:root:not([data-mode="light"]) .cmx-search {
  background: rgba(11, 26, 61, .75);
  border-color: rgba(61, 115, 221, .3);
  color: var(--mu-d);
}
[data-mode="dark"] .cmx-search:focus-within,
:root:not([data-mode="light"]) .cmx-search:focus-within {
  border-color: var(--cyan);
  box-shadow: 0 0 0 4px rgba(61, 115, 221, .25);
  color: var(--cyan);
}
[data-mode="dark"] .cmx-search input,
:root:not([data-mode="light"]) .cmx-search input {
  color: #fff;
}
[data-mode="dark"] .cmx-search input::placeholder,
:root:not([data-mode="light"]) .cmx-search input::placeholder {
  color: rgba(143, 162, 199, .6);
}

/* 7.4 面包屑与计数器 (Path & Crumbs) */
[data-mode="dark"] .cmx-path,
:root:not([data-mode="light"]) .cmx-path {
  border-bottom-color: rgba(61, 115, 221, .22);
}
[data-mode="dark"] .cmx-crumbs li,
:root:not([data-mode="light"]) .cmx-crumbs li {
  color: #fff;
}
[data-mode="dark"] .cmx-crumbs button,
:root:not([data-mode="light"]) .cmx-crumbs button {
  color: var(--mu-d);
}
[data-mode="dark"] .cmx-crumbs button:hover,
:root:not([data-mode="light"]) .cmx-crumbs button:hover {
  color: var(--cyan);
  background: rgba(61, 115, 221, .2);
}
[data-mode="dark"] .cmx-crumbs .is-q,
:root:not([data-mode="light"]) .cmx-crumbs .is-q {
  background: rgba(61, 115, 221, .25);
  color: var(--cyan);
}
[data-mode="dark"] .cmx-crumbs .is-reset button,
:root:not([data-mode="light"]) .cmx-crumbs .is-reset button {
  color: var(--cyan);
}
[data-mode="dark"] .cmx-count,
:root:not([data-mode="light"]) .cmx-count {
  color: var(--mu-d);
}
[data-mode="dark"] .cmx-count b,
:root:not([data-mode="light"]) .cmx-count b {
  color: var(--cyan);
}

/* 7.5 学制矩阵看板 (Matrix Board & Cards) */
[data-mode="dark"] .cmx-col,
:root:not([data-mode="light"]) .cmx-col {
  background: rgba(11, 26, 61, .75);
  border-color: rgba(61, 115, 221, .3);
}
[data-mode="dark"] .cmx-major:hover,
:root:not([data-mode="light"]) .cmx-major:hover {
  background: rgba(61, 115, 221, .18);
  box-shadow: inset 2px 0 0 var(--cyan);
}
[data-mode="dark"] .cmx-major-name,
:root:not([data-mode="light"]) .cmx-major-name {
  color: var(--tx-d);
}
[data-mode="dark"] .cmx-major:hover .cmx-major-name,
:root:not([data-mode="light"]) .cmx-major:hover .cmx-major-name {
  color: #fff;
}

/* 7.6 课程卡片列表 (Course Grid & Cells) */
[data-mode="dark"] .cmx-ghead button b,
:root:not([data-mode="light"]) .cmx-ghead button b {
  color: #fff;
}
[data-mode="dark"] .cmx-ghead button:hover b,
:root:not([data-mode="light"]) .cmx-ghead button:hover b {
  color: var(--cyan);
}
[data-mode="dark"] .cmx-ghead button span,
:root:not([data-mode="light"]) .cmx-ghead button span {
  color: var(--mu-d);
}
[data-mode="dark"] .cmx-ghead::after,
:root:not([data-mode="light"]) .cmx-ghead::after {
  border-top-color: rgba(61, 115, 221, .22);
}
[data-mode="dark"] .ccell,
:root:not([data-mode="light"]) .ccell {
  background: rgba(11, 26, 61, .75);
  border-color: rgba(61, 115, 221, .25);
}
[data-mode="dark"] .ccell:hover,
:root:not([data-mode="light"]) .ccell:hover {
  border-color: rgba(127, 214, 255, .45);
  box-shadow: 0 24px 50px -20px rgba(0, 0, 0, .7);
}
[data-mode="dark"] .ccell-title,
:root:not([data-mode="light"]) .ccell-title {
  color: #fff;
}
[data-mode="dark"] .ccell-foot,
:root:not([data-mode="light"]) .ccell-foot {
  border-top-color: rgba(61, 115, 221, .2);
}
[data-mode="dark"] .ccell-act,
:root:not([data-mode="light"]) .ccell-act {
  color: var(--cyan);
  border-color: rgba(127, 214, 255, .35);
}
[data-mode="dark"] .ccell-act:hover,
:root:not([data-mode="light"]) .ccell-act:hover {
  background: var(--blue);
  color: #fff;
  border-color: var(--blue);
}
[data-mode="dark"] .ccell-act-disabled,
:root:not([data-mode="light"]) .ccell-act-disabled {
  color: var(--cyan);
  border-color: rgba(127, 214, 255, .35);
  background: transparent;
}
[data-mode="dark"] .ccell-act-disabled:hover,
:root:not([data-mode="light"]) .ccell-act-disabled:hover {
  background: rgba(61, 115, 221, .2);
  border-color: rgba(127, 214, 255, .55);
  color: #fff;
}
[data-mode="dark"] .ccell-act-tip,
:root:not([data-mode="light"]) .ccell-act-tip {
  color: #7fd6ff;
  text-shadow: 0 0 10px rgba(127, 214, 255, .4);
}
[data-mode="dark"] .ccell-path,
:root:not([data-mode="light"]) .ccell-path {
  color: var(--cyan);
}
[data-mode="dark"] .cmx-cobuild,
:root:not([data-mode="light"]) .cmx-cobuild {
  background: rgba(11, 26, 61, .6);
  border-color: rgba(61, 115, 221, .4);
}
[data-mode="dark"] .cmx-cobuild-ttl,
:root:not([data-mode="light"]) .cmx-cobuild-ttl {
  color: #fff;
}
[data-mode="dark"] .cmx-cobuild-desc,
:root:not([data-mode="light"]) .cmx-cobuild-desc {
  color: var(--mu-d);
}
[data-mode="dark"] .cmx-empty,
:root:not([data-mode="light"]) .cmx-empty {
  background: rgba(11, 26, 61, .6);
  border-color: rgba(61, 115, 221, .35);
}
[data-mode="dark"] .cmx-empty-ttl,
:root:not([data-mode="light"]) .cmx-empty-ttl {
  color: #fff;
}
[data-mode="dark"] .cmx-empty-desc,
:root:not([data-mode="light"]) .cmx-empty-desc {
  color: var(--mu-d);
}
[data-mode="dark"] .courses-count,
:root:not([data-mode="light"]) .courses-count {
  color: var(--mu-d);
}
[data-mode="dark"] .courses-count b,
:root:not([data-mode="light"]) .courses-count b {
  color: var(--cyan);
}
[data-mode="dark"] .ccard,
:root:not([data-mode="light"]) .ccard {
  background: #091738;
  border-color: rgba(61, 115, 221, .24);
  color: var(--tx-d);
  box-shadow: 0 20px 48px -20px rgba(0, 0, 0, .6);
}
[data-mode="dark"] .ccard:hover,
:root:not([data-mode="light"]) .ccard:hover {
  border-color: rgba(127, 214, 255, .45);
  box-shadow: 0 40px 80px -40px rgba(0, 0, 0, .8);
}
[data-mode="dark"] .ccard-meta,
:root:not([data-mode="light"]) .ccard-meta {
  color: var(--cyan);
}
[data-mode="dark"] .ccard-title,
:root:not([data-mode="light"]) .ccard-title {
  color: #fff;
}
[data-mode="dark"] .ccard-sub,
:root:not([data-mode="light"]) .ccard-sub {
  color: var(--mu-d);
}
[data-mode="dark"] .ccard-desc,
:root:not([data-mode="light"]) .ccard-desc {
  color: #94a3b8;
}
[data-mode="dark"] .ccard-foot,
:root:not([data-mode="light"]) .ccard-foot {
  border-top-color: rgba(150, 180, 241, .14);
}
[data-mode="dark"] .price b,
:root:not([data-mode="light"]) .price b {
  color: #fff;
}
[data-mode="dark"] .price s,
[data-mode="dark"] .price small,
:root:not([data-mode="light"]) .price s,
:root:not([data-mode="light"]) .price small {
  color: var(--mu-d);
}
[data-mode="dark"] .track-end,
:root:not([data-mode="light"]) .track-end {
  background: rgba(11, 26, 61, .55);
  border-color: rgba(61, 115, 221, .35);
  color: var(--tx-d);
}
[data-mode="dark"] .track-end .mono,
:root:not([data-mode="light"]) .track-end .mono {
  color: var(--cyan);
}
[data-mode="dark"] .track-end-title,
:root:not([data-mode="light"]) .track-end-title {
  color: #fff;
}
[data-mode="dark"] .track-bar::before,
:root:not([data-mode="light"]) .track-bar::before {
  background: rgba(150, 180, 241, .16);
}

/* 8. 双向通道卡片 (Channel Cards) */
[data-mode="dark"] .chan-c,
:root:not([data-mode="light"]) .chan-c {
  background-color: #0b1a3d;
  border-color: rgba(61, 115, 221, .28);
  color: var(--tx-d);
}
[data-mode="dark"] .chan-b,
:root:not([data-mode="light"]) .chan-b {
  background-color: var(--navy-2);
  border-color: transparent;
}
[data-mode="dark"] .chan-c .chan-top,
:root:not([data-mode="light"]) .chan-c .chan-top {
  color: var(--mu-d);
}
[data-mode="dark"] .chan-c .chan-desc,
:root:not([data-mode="light"]) .chan-c .chan-desc {
  color: #94a3b8;
}
[data-mode="dark"] .chan-c .checks li,
:root:not([data-mode="light"]) .chan-c .checks li {
  border-top-color: rgba(150, 180, 241, .14);
  color: var(--tx-d);
}
[data-mode="dark"] .chan-c .chan-letter,
:root:not([data-mode="light"]) .chan-c .chan-letter {
  -webkit-text-stroke-color: rgba(150, 180, 241, .16);
}

/* 9. 客户端下载卡片 (Download Cards) */
[data-mode="dark"] .dl,
:root:not([data-mode="light"]) .dl {
  background: #091738;
  border-color: rgba(61, 115, 221, .24);
  color: var(--tx-d);
  box-shadow: 0 16px 40px -20px rgba(0, 0, 0, .55);
}
[data-mode="dark"] .dl:hover,
:root:not([data-mode="light"]) .dl:hover {
  border-color: rgba(127, 214, 255, .45);
  box-shadow: 0 40px 70px -40px rgba(0, 0, 0, .7);
}
[data-mode="dark"] .dl .h3,
:root:not([data-mode="light"]) .dl .h3 {
  color: #fff;
}
[data-mode="dark"] .dl-glyph,
:root:not([data-mode="light"]) .dl-glyph {
  background-color: #0e204a;
  border-color: rgba(61, 115, 221, .3);
}
[data-mode="dark"] .dl-glyph b,
:root:not([data-mode="light"]) .dl-glyph b {
  color: var(--cyan);
}
[data-mode="dark"] .dl-desc,
:root:not([data-mode="light"]) .dl-desc {
  color: var(--mu-d);
}
[data-mode="dark"] .spec,
:root:not([data-mode="light"]) .spec {
  border-top-color: rgba(150, 180, 241, .16);
}
[data-mode="dark"] .spec div,
:root:not([data-mode="light"]) .spec div {
  border-bottom-color: rgba(150, 180, 241, .14);
}
[data-mode="dark"] .spec dt,
:root:not([data-mode="light"]) .spec dt {
  color: var(--acc-d);
}
[data-mode="dark"] .spec dd,
:root:not([data-mode="light"]) .spec dd {
  color: var(--tx-d);
}
[data-mode="dark"] .dl-fallback-text,
:root:not([data-mode="light"]) .dl-fallback-text {
  color: var(--mu-d);
}
[data-mode="dark"] .dl-fallback-link,
:root:not([data-mode="light"]) .dl-fallback-link {
  color: var(--cyan);
}
[data-mode="dark"] .dl-fallback-link:hover,
:root:not([data-mode="light"]) .dl-fallback-link:hover {
  background-color: rgba(61, 115, 221, .15);
}

/* 10. 论坛工坊社区 (Community Forum & Posts) */
[data-mode="dark"] .bbs-stats span.mono,
:root:not([data-mode="light"]) .bbs-stats span.mono {
  color: var(--mu-d);
}
[data-mode="dark"] .bbs-stats b,
:root:not([data-mode="light"]) .bbs-stats b {
  color: #fff;
}
[data-mode="dark"] .post,
:root:not([data-mode="light"]) .post {
  background: #091738;
  border-color: rgba(61, 115, 221, .24);
  color: var(--tx-d);
}
[data-mode="dark"] .post:hover,
:root:not([data-mode="light"]) .post:hover {
  border-color: rgba(127, 214, 255, .45);
}
[data-mode="dark"] .post-id,
:root:not([data-mode="light"]) .post-id {
  color: var(--mu-d);
}
[data-mode="dark"] .post-title,
:root:not([data-mode="light"]) .post-title {
  color: #fff;
}
[data-mode="dark"] .post-body,
:root:not([data-mode="light"]) .post-body {
  color: #94a3b8;
}
[data-mode="dark"] .reply,
:root:not([data-mode="light"]) .reply {
  background: #0d1e45;
  border-left-color: var(--cyan);
  color: #cbd5e1;
}
[data-mode="dark"] .reply b,
:root:not([data-mode="light"]) .reply b {
  color: var(--cyan);
}
[data-mode="dark"] .vote,
:root:not([data-mode="light"]) .vote {
  background: #0c1a3d;
  border-color: rgba(61, 115, 221, .26);
  color: var(--tx-d);
}
[data-mode="dark"] .vote span,
:root:not([data-mode="light"]) .vote span {
  color: var(--mu-d);
}
[data-mode="dark"] .vote svg,
:root:not([data-mode="light"]) .vote svg {
  color: var(--acc-d2);
}
[data-mode="dark"] .vote:hover,
:root:not([data-mode="light"]) .vote:hover {
  border-color: var(--cyan);
}
[data-mode="dark"] .ptag-bug,
:root:not([data-mode="light"]) .ptag-bug {
  background: rgba(255, 106, 43, .2);
  color: #ff9d75;
}
[data-mode="dark"] .ptag-feat,
:root:not([data-mode="light"]) .ptag-feat {
  background: rgba(61, 115, 221, .22);
  color: var(--cyan);
}
[data-mode="dark"] .ptag-done,
:root:not([data-mode="light"]) .ptag-done {
  background: rgba(34, 196, 143, .2);
  color: #8ff0cb;
}
[data-mode="dark"] .ptag-wip,
:root:not([data-mode="light"]) .ptag-wip {
  background: rgba(245, 184, 61, .2);
  color: #ffd98c;
}

/* 11. 合作洽谈表单与输入框 (Partner Form) */
[data-mode="dark"] .partner .form,
[data-mode="dark"] .form,
:root:not([data-mode="light"]) .partner .form,
:root:not([data-mode="light"]) .form {
  background: #0b1a3d;
  border: 1px solid rgba(61, 115, 221, .28);
  color: var(--tx-d);
  box-shadow: 0 40px 80px -40px rgba(0, 0, 0, .7);
}
[data-mode="dark"] .form-head,
:root:not([data-mode="light"]) .form-head {
  border-bottom-color: rgba(150, 180, 241, .16);
}
[data-mode="dark"] .form-head .h4,
:root:not([data-mode="light"]) .form-head .h4 {
  color: #fff;
}
[data-mode="dark"] .form-head p,
:root:not([data-mode="light"]) .form-head p {
  color: var(--mu-d);
}
[data-mode="dark"] .field input,
[data-mode="dark"] .field textarea,
:root:not([data-mode="light"]) .field input,
:root:not([data-mode="light"]) .field textarea {
  background: #081533;
  border-color: rgba(61, 115, 221, .28);
  color: #fff;
}
[data-mode="dark"] .field input:focus,
[data-mode="dark"] .field textarea:focus,
:root:not([data-mode="light"]) .field input:focus,
:root:not([data-mode="light"]) .field textarea:focus {
  background: #0c1e47;
  border-color: var(--cyan);
  box-shadow: 0 0 0 4px rgba(61, 115, 221, .25);
}
[data-mode="dark"] .field > input + span,
[data-mode="dark"] .field > textarea + span,
:root:not([data-mode="light"]) .field > input + span,
:root:not([data-mode="light"]) .field > textarea + span {
  color: var(--mu-d);
}
[data-mode="dark"] .field > input:focus + span,
[data-mode="dark"] .field > input:not(:placeholder-shown) + span,
[data-mode="dark"] .field > textarea:focus + span,
[data-mode="dark"] .field > textarea:not(:placeholder-shown) + span,
:root:not([data-mode="light"]) .field > input:focus + span,
:root:not([data-mode="light"]) .field > input:not(:placeholder-shown) + span,
:root:not([data-mode="light"]) .field > textarea:focus + span,
:root:not([data-mode="light"]) .field > textarea:not(:placeholder-shown) + span {
  color: var(--cyan);
}
[data-mode="dark"] .field em,
:root:not([data-mode="light"]) .field em {
  color: #64748b;
}
[data-mode="dark"] .field-select,
:root:not([data-mode="light"]) .field-select {
  background: #081533;
  border-color: rgba(61, 115, 221, .28);
}
[data-mode="dark"] .field-static,
:root:not([data-mode="light"]) .field-static {
  color: var(--mu-d);
}
[data-mode="dark"] .opts span,
:root:not([data-mode="light"]) .opts span {
  background: #0c1c42;
  border-color: rgba(61, 115, 221, .28);
  color: #cbd5e1;
}
[data-mode="dark"] .opts label:hover span,
:root:not([data-mode="light"]) .opts label:hover span {
  border-color: var(--cyan);
  color: #fff;
}
[data-mode="dark"] .opts input:checked + span,
:root:not([data-mode="light"]) .opts input:checked + span {
  background: var(--blue);
  border-color: var(--cyan);
  color: #fff;
}

/* 12. 弹窗与抽屉 (Modals & Drawer) */
[data-mode="dark"] .modal-box,
[data-mode="dark"] .drawer-panel,
:root:not([data-mode="light"]) .modal-box,
:root:not([data-mode="light"]) .drawer-panel {
  background: #091738;
  border: 1px solid rgba(61, 115, 221, .35);
  color: var(--tx-d);
  box-shadow: 0 60px 140px -30px rgba(0, 0, 0, .9);
}
[data-mode="dark"] .modal-x,
:root:not([data-mode="light"]) .modal-x {
  background: #0e2454;
  color: var(--tx-d);
}
[data-mode="dark"] .modal-x:hover,
:root:not([data-mode="light"]) .modal-x:hover {
  background: var(--blue);
  color: #fff;
}
[data-mode="dark"] .code-btn,
:root:not([data-mode="light"]) .code-btn {
  background: #0e2454;
  color: var(--tx-d);
}
[data-mode="dark"] .code-btn:hover:not(:disabled),
:root:not([data-mode="light"]) .code-btn:hover:not(:disabled) {
  background: var(--blue);
  color: #fff;
}
[data-mode="dark"] .code-btn:disabled,
:root:not([data-mode="light"]) .code-btn:disabled {
  color: #64748b;
}
[data-mode="dark"] .link-btn,
:root:not([data-mode="light"]) .link-btn {
  color: var(--cyan);
}
[data-mode="dark"] .mc-steps button,
:root:not([data-mode="light"]) .mc-steps button {
  background: #0e2454;
  color: #94a3b8;
}
[data-mode="dark"] .mc-steps li.on button,
:root:not([data-mode="light"]) .mc-steps li.on button {
  background: var(--blue);
  color: #fff;
}
[data-mode="dark"] .mc-steps li.done button,
:root:not([data-mode="light"]) .mc-steps li.done button {
  background: rgba(61, 115, 221, .22);
  color: var(--cyan);
}
[data-mode="dark"] .mc-foot,
:root:not([data-mode="light"]) .mc-foot {
  color: var(--mu-d);
}
[data-mode="dark"] .mine,
:root:not([data-mode="light"]) .mine {
  background: #0b1a3d;
  border-color: rgba(61, 115, 221, .25);
  color: var(--tx-d);
}
[data-mode="dark"] .mine-bar,
:root:not([data-mode="light"]) .mine-bar {
  background: #081533;
}
[data-mode="dark"] .mine p,
:root:not([data-mode="light"]) .mine p {
  color: var(--mu-d);
}

/* 13. 按钮与标签微交互 (Buttons & Chips) */
[data-mode="dark"] .chip-btn,
:root:not([data-mode="light"]) .chip-btn {
  border-color: rgba(150, 180, 241, .28);
  color: var(--tx-d);
}
[data-mode="dark"] .chip-btn:hover,
:root:not([data-mode="light"]) .chip-btn:hover {
  border-color: var(--cyan);
  color: var(--cyan);
  background: rgba(61, 115, 221, .15);
}
[data-mode="dark"] .chip-btn-dark,
:root:not([data-mode="light"]) .chip-btn-dark {
  background: var(--blue);
  color: #fff;
  border-color: var(--blue);
}
[data-mode="dark"] .chip-btn-dark:hover,
:root:not([data-mode="light"]) .chip-btn-dark:hover {
  background: #2a56b3;
  border-color: #2a56b3;
}
[data-mode="dark"] .sheet .btn-dark,
[data-mode="dark"] .modal .btn-dark,
:root:not([data-mode="light"]) .sheet .btn-dark,
:root:not([data-mode="light"]) .modal .btn-dark {
  --b-bg: var(--blue);
  --b-tx: #fff;
  --b-bd: var(--blue);
  --b-fill: #fff;
  --b-ftx: var(--blue-800);
}
[data-mode="dark"] .sheet .btn-line-dark,
:root:not([data-mode="light"]) .sheet .btn-line-dark {
  --b-tx: var(--tx-d);
  --b-bd: rgba(150, 180, 241, .28);
  --b-fill: var(--blue);
  --b-ftx: #fff;
}
[data-mode="dark"] .sheet .btn-primary,
:root:not([data-mode="light"]) .sheet .btn-primary {
  --b-fill: #fff;
  --b-ftx: var(--blue-800);
}
[data-mode="dark"] .sheet .btn-light,
::root:not([data-mode="light"]) .sheet .btn-light {
  --b-tx: #0a1430;
}
[data-mode="dark"] .btn-blue,
:root:not([data-mode="light"]) .btn-blue,
[data-mode="dark"] .partner .form .btn-submit,
:root:not([data-mode="light"]) .partner .form .btn-submit {
  --b-fill: #fff;
  --b-ftx: var(--blue-800);
}
[data-mode="dark"] .btn-blue:hover .btn-ico,
:root:not([data-mode="light"]) .btn-blue:hover .btn-ico,
[data-mode="dark"] .partner .form .btn-submit:hover .btn-ico,
:root:not([data-mode="light"]) .partner .form .btn-submit:hover .btn-ico {
  background: rgba(61, 115, 221, .14);
}

/* 14. 页面吸顶导航栏：暗色模式滚动经过 Sheet 时保持纯正深蓝玻璃态，避免白光闪烁 */
[data-mode="dark"] .nav[data-nav-theme="light"],
[data-mode="dark"] .neg-cover-nav[data-nav-theme="light"],
:root:not([data-mode="light"]) .nav[data-nav-theme="light"],
:root:not([data-mode="light"]) .neg-cover-nav[data-nav-theme="light"] {
  --n-tx: var(--tx-d);
  --n-mu: var(--mu-d);
  --n-bg: rgba(7, 18, 48, .85);
  --n-line: var(--line-d);
  --n-menu: rgba(11, 26, 61, .96);
  --n-menu-tx: var(--tx-d);
}
[data-mode="dark"] .nav[data-nav-theme="light"] .btn-line,
[data-mode="dark"] .neg-cover-nav[data-nav-theme="light"] .btn-line,
:root:not([data-mode="light"]) .nav[data-nav-theme="light"] .btn-line,
:root:not([data-mode="light"]) .neg-cover-nav[data-nav-theme="light"] .btn-line {
  --b-bd: var(--line-d);
  --b-fill: var(--blue);
  --b-ftx: #fff;
}

/* ---------- mode toggle ---------- */
.mode-tg { position: relative; display: inline-grid; grid-template-columns: 1fr 1fr; align-items: center; width: 72px; height: 38px; padding: 3px; border-radius: 8px; border: 1px solid var(--n-line, var(--line-d)); color: var(--n-tx, var(--tx-d)); flex: none; background: rgba(var(--bl), .06); cursor: pointer; }
.mode-tg-ind { position: absolute; left: 3px; top: 3px; bottom: 3px; width: calc(50% - 3px); border-radius: 5px; background: var(--blue); box-shadow: 0 4px 14px -4px rgba(61, 115, 221, .7); transition: transform .7s var(--ease); }
[data-mode="light"] .mode-tg-ind { transform: translateX(100%); }
.mode-ic { position: relative; z-index: 1; width: 17px; height: 17px; justify-self: center; color: var(--n-mu, var(--mu-d)); transition: color .5s, transform .7s var(--ease); }
.mode-ic-d { color: #fff; }
[data-mode="light"] .mode-ic-d { color: var(--n-mu, var(--mu-d)); transform: rotate(-30deg) scale(.9); }
[data-mode="light"] .mode-ic-l { color: #fff; transform: rotate(90deg); }
.mode-tg:hover .mode-ic { transform: scale(1.12); }
.mode-tg:hover .mode-ic-l { transform: rotate(45deg) scale(1.12); }
.mode-tg::after { content: attr(data-tip); position: absolute; top: calc(100% + 10px); left: 50%; transform: translate(-50%, -4px); padding: 5px 9px; border-radius: 4px; background: var(--navy-2); color: #fff; font-size: 11.5px; white-space: nowrap; pointer-events: none; opacity: 0; transition: opacity .3s, transform .5s var(--ease); z-index: 100; }
.mode-tg:hover::after { opacity: 1; transform: translate(-50%, 0); }
@media (hover: none) { .mode-tg::after { display: none; } }

/* mode switch curtain */
.mode-veil { --vb: #e8eef9; --vg: rgba(61,115,221,.13); --vg2: rgba(61,115,221,.05); --vc: #2a56b3;
  position: fixed; inset: 0; z-index: 9800; pointer-events: none; visibility: hidden;
  background-color: var(--vb);
  background-image: linear-gradient(var(--vg) 1px, transparent 1px), linear-gradient(90deg, var(--vg) 1px, transparent 1px), linear-gradient(var(--vg2) 1px, transparent 1px), linear-gradient(90deg, var(--vg2) 1px, transparent 1px);
  background-size: 96px 96px, 96px 96px, 24px 24px, 24px 24px; background-position: -1px -1px; }
.mode-veil.to-dark { --vb: #071230; --vg: rgba(150,180,241,.08); --vg2: rgba(150,180,241,.035); --vc: #96b4f1; }
.mode-veil i { position: absolute; background: var(--vc); opacity: .55; }
.mv-x { left: 0; right: 0; top: var(--cy, 50%); height: 1px; }
.mv-y { top: 0; bottom: 0; left: var(--cx, 50%); width: 1px; }
.mv-label { position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%); display: grid; justify-items: center; gap: 6px; color: var(--vc); font-size: 12px; letter-spacing: .2em; text-align: center; }
.mv-label b { font-weight: 500; font-size: 15px; letter-spacing: .14em; }
.mv-k { font-size: 10px; opacity: .7; }

/* nav fit */
.nav-mine { white-space: nowrap; }
.brand-name { white-space: nowrap; }
.brand-tag { white-space: nowrap; }
@media (max-width: 1400px) { .nav-mine span { display: none; } .nav-links { font-size: 14px; } .nav-link { padding: 0 10px; } }
@media (max-width: 1360px) {
  .nav-inner { grid-template-columns: auto 1fr auto; gap: 16px; }
  .nav-links { justify-content: center; }
}
@media (max-width: 600px) { .nav-actions .nav-mine { display: none; } .nav-actions { gap: 6px; } .mode-tg { width: 64px; height: 36px; } .neg-nav-actions { gap: 8px; } .neg-nav-auth { padding: 6px 8px; font-size: 13px; } }

/* ==========================================================================
   MINUS-ONE SCREEN (负一屏) · 电工电子仿真课堂 (极简小米官网风格)
   ========================================================================== */
.neg-screen-cover {
  position: relative;
  width: 100%;
  min-height: 100vh;
  min-height: 100svh;
  height: 100vh;
  height: 100svh;
  background-color: var(--navy);
  background-image:
    linear-gradient(var(--grid-d) 1px, transparent 1px), linear-gradient(90deg, var(--grid-d) 1px, transparent 1px),
    linear-gradient(var(--grid-d2) 1px, transparent 1px), linear-gradient(90deg, var(--grid-d2) 1px, transparent 1px);
  background-size: 96px 96px, 96px 96px, 24px 24px, 24px 24px;
  background-position: -1px -1px;
  color: var(--tx-d);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  overflow: hidden;
  z-index: 10;
  transition: background-color .4s var(--ease), color .4s var(--ease);
}

/* 展台高精环境光 / 聚光灯 (亮色柔和聚光白晕，暗色深邃科技蓝晕，向四周自然衰减融入工程图纸底座) */
.neg-screen-cover::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(65% 55% at 72% 48%, rgba(255, 255, 255, 0.72), transparent 72%),
    radial-gradient(45% 45% at 16% 38%, rgba(61, 115, 221, 0.12), transparent 70%);
  transition: background .4s var(--ease);
}

[data-mode="dark"] .neg-screen-cover::before {
  background:
    radial-gradient(65% 55% at 72% 48%, rgba(61, 115, 221, 0.22), transparent 70%),
    radial-gradient(45% 45% at 16% 38%, rgba(61, 115, 221, 0.14), transparent 70%);
}

/* 01 独立首屏顶部导航栏 (采用与 02 主站吸顶导航相同视觉样式，不吸顶，保持当前 01 条目不变) */
.neg-cover-nav {
  --n-tx: var(--tx-d);
  --n-mu: var(--mu-d);
  --n-bg: rgba(var(--nv), .62);
  --n-line: var(--line-d);
  position: relative;
  width: 100%;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  z-index: 20;
  color: var(--n-tx);
  background: var(--n-bg);
  backdrop-filter: blur(18px) saturate(1.4);
  -webkit-backdrop-filter: blur(18px) saturate(1.4);
  border-bottom: 1px solid var(--n-line);
  transition: color .5s var(--ease), background .5s var(--ease), border-color .5s var(--ease);
}
:root[data-mode="light"] .neg-cover-nav,
.neg-cover-nav[data-nav-theme="light"] {
  --n-tx: var(--tx-l);
  --n-mu: var(--mu-l);
  --n-bg: rgba(242, 244, 248, .82);
  --n-line: var(--line-l);
}
.neg-cover-nav .nav-inner,
.neg-nav-inner {
  height: 100%;
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--gut);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.neg-cover-nav .brand,
.neg-cover-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  justify-self: start;
  text-decoration: none;
  color: var(--n-tx);
}
.neg-cover-nav .brand-name {
  font-family: var(--f-disp);
  font-weight: 700;
  font-size: 19px;
  letter-spacing: -.02em;
  color: var(--n-tx);
}
.neg-cover-nav .brand-tag {
  font-size: 13px;
  color: var(--n-mu);
  border: 1px solid var(--n-line);
  border-radius: 3px;
  padding: 2px 7px;
}
.neg-cover-nav .nav-actions,
.neg-nav-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  justify-self: end;
}
.neg-logo-icon {
  width: 32px;
  height: 32px;
  border-radius: 7px;
  object-fit: cover;
  box-shadow: 0 4px 12px -2px rgba(61, 115, 221, .38), 0 0 0 1px rgba(var(--bl), .18);
  flex-shrink: 0;
  transition: transform .25s ease, box-shadow .25s ease;
}
.brand:hover .neg-logo-icon,
.neg-cover-logo:hover .neg-logo-icon {
  transform: scale(1.05);
  box-shadow: 0 6px 16px -2px rgba(61, 115, 221, .48), 0 0 0 1px rgba(var(--bl), .32);
}
.neg-nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
  font-size: 14px;
}
.neg-nav-links button.neg-nav-link {
  background: none;
  border: none;
  padding: 0;
  font: inherit;
  font-size: 14px;
}
.neg-nav-link {
  color: var(--mu-d);
  text-decoration: none;
  transition: color .25s ease;
  font-weight: 500;
  cursor: pointer;
}
.neg-nav-link:hover {
  color: var(--tx-d);
}
.neg-nav-link.active {
  color: var(--blue);
  font-weight: 600;
}
.neg-nav-jump-main {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.neg-jump-arrow {
  width: 10px;
  height: 10px;
  transition: transform .25s ease;
}
.neg-nav-jump-main:hover .neg-jump-arrow {
  transform: translateY(2px);
}
.neg-nav-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}
.neg-nav-auth {
  font-size: 13.5px;
  color: var(--mu-d);
  background: transparent;
  border: none;
  cursor: pointer;
  transition: color .2s;
  padding: 6px 12px;
}
.neg-nav-auth:hover {
  color: var(--tx-d);
}

/* ==========================================================================
   CAROUSEL SLIDES (首屏多产品展示轮播)
   ========================================================================== */
.neg-carousel-viewport {
  position: relative;
  flex: 1;
  width: 100%;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.neg-slide {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateX(40px);
  transition: opacity .45s var(--ease), transform .55s var(--ease), visibility 0s .45s;
}

.neg-slide.is-active {
  position: relative;
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(0);
  transition-delay: 0s;
}

.neg-slide-badge-wrap {
  margin-bottom: 24px;
}
.neg-slide-badge {
  display: inline-flex;
  align-items: center;
  height: 24px;
  padding: 0 10px;
  border-radius: 4px;
  border: 1px solid var(--line-d);
  font-size: 11px;
  font-weight: 600;
  color: var(--blue);
  background: rgba(var(--bl), .08);
  letter-spacing: .08em;
}

/* 主体内容区 (左右双栏，层级高于水印，确保任何 UI 元素均在水印之上) */
.neg-cover-body {
  position: relative;
  z-index: 5;
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 10px var(--gut);
  gap: 40px;
}

.neg-cover-left {
  flex: 0 0 46%;
  max-width: 540px;
  display: flex;
  flex-direction: column;
  position: relative;
  z-index: 6;
}

/* 飞鸟装饰 (历史遗留保留) */
.neg-flying-birds {
  margin-bottom: 24px;
  opacity: 0.75;
}
.neg-flying-birds svg {
  width: 140px;
  height: 42px;
}
.neg-flying-birds path {
  fill: rgba(10, 20, 48, 0.35);
}
[data-mode="dark"] .neg-flying-birds path {
  fill: rgba(150, 180, 241, 0.45);
}

/* 全景巨幅蓝图底纹水印 (衬在地面，z-index 为 0，绝对位于所有 UI 元素底层) */
.neg-watermark-pane {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 84%;
  max-width: 1680px;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  display: flex;
  align-items: center;
  overflow: visible;
  user-select: none;
  mask-image: linear-gradient(100deg, #000 68%, rgba(0,0,0,0.3) 88%, transparent 100%);
  -webkit-mask-image: linear-gradient(100deg, #000 68%, rgba(0,0,0,0.3) 88%, transparent 100%);
}

.neg-watermark-pane svg {
  width: 100%;
  height: auto;
  max-height: 96vh;
  color: var(--blue);
  opacity: 0.16;
  transition: opacity .35s var(--ease), color .35s var(--ease);
}

[data-mode="dark"] .neg-watermark-pane svg {
  color: #6ea1ff;
  opacity: 0.18;
}

@media (max-width: 1400px) {
  .neg-watermark-pane {
    width: 80%;
  }
}
@media (max-width: 1100px) {
  .neg-watermark-pane {
    width: 74%;
    opacity: 0.85;
  }
}
@media (max-width: 900px) {
  .neg-watermark-pane {
    display: none;
  }
}

.neg-hero-eng {
  font-family: var(--f-sans);
  font-size: clamp(40px, 4.8vw, 62px);
  font-weight: 900;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--tx-d);
  line-height: 1.05;
  margin-bottom: 10px;
}

.neg-hero-title {
  font-size: clamp(28px, 3.4vw, 44px);
  font-weight: 700;
  color: var(--tx-d);
  line-height: 1.2;
  margin-bottom: 16px;
  letter-spacing: -0.01em;
}

/* 所有轮播页统一大标题规范：中文在上面优先大字显示（稍大于英文），英文在下方适当缩小但保持大字设计 */
.neg-hero-title.is-main-cn {
  font-size: clamp(34px, 4.2vw, 50px);
  font-weight: 800;
  letter-spacing: -0.015em;
  line-height: 1.18;
  margin-bottom: 12px;
  color: var(--tx-d);
}

.neg-hero-title.is-main-cn.is-compact {
  font-size: clamp(26px, 3.2vw, 38px);
  line-height: 1.25;
  margin-bottom: 10px;
}

.neg-hero-eng.is-sub-eng {
  font-family: var(--f-sans);
  font-size: clamp(28px, 3.4vw, 42px);
  font-weight: 900;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--tx-d);
  line-height: 1.08;
  margin-bottom: 18px;
}

.neg-slide[data-slide-index="1"] .neg-hero-eng.is-sub-eng,
.neg-slide[data-slide-index="2"] .neg-hero-eng.is-sub-eng {
  font-size: clamp(22px, 2.7vw, 32px);
  margin-bottom: 16px;
}

.neg-hero-sub {
  font-size: 15.5px;
  color: var(--mu-d);
  line-height: 1.6;
  margin-bottom: 32px;
}

.neg-hero-actions {
  display: flex;
  align-items: center;
  gap: 28px;
}

.neg-link-more {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 15.5px;
  font-weight: 600;
  color: var(--tx-d);
  text-decoration: none;
  cursor: pointer;
  transition: transform .2s ease, color .2s ease;
}
.neg-link-more:hover {
  transform: translateX(4px);
  color: var(--blue-700);
}
[data-mode="dark"] .neg-link-more:hover,
:root:not([data-mode="light"]) .neg-link-more:hover {
  color: var(--cyan);
}
[data-mode="light"] .neg-link-more:hover {
  color: var(--blue-700);
}
.neg-circle-arrow {
  width: 22px;
  height: 22px;
  transition: transform .2s ease;
}

.neg-btn-launch {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 46px;
  padding: 0 24px;
  border-radius: 99px;
  background: #3d73dd;
  color: #fff;
  border: none;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 8px 20px -6px rgba(61, 115, 221, 0.45);
  transition: all .25s ease;
}
.neg-btn-launch:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 26px -6px rgba(61, 115, 221, 0.6);
  background: #2f65cf;
}
.neg-btn-launch .btn-ic {
  width: 14px;
  height: 14px;
}

/* 右侧设备展示区 (参考截图右侧车辆造型与真实地面投影，层级高于水印) */
.neg-cover-right {
  flex: 0 0 52%;
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
  z-index: 6;
}
.neg-device-stage {
  position: relative;
  width: 100%;
  max-width: 680px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* =========================================================================
   横屏旗舰智能手机外框实训展台 (Landscape Smartphone Mockup Stage)
   ========================================================================= */
.neg-phone-mockup {
  position: relative;
  width: 100%;
  cursor: pointer;
  transition: transform 0.45s cubic-bezier(0.16, 1, 0.3, 1);
  z-index: 2;
}

.neg-phone-mockup:hover {
  transform: translateY(-8px);
}

/* 手机机身物理微凸侧键 (横屏顶部音量键/动作键，底部电源键) */
.neg-phone-btn {
  position: absolute;
  background: linear-gradient(180deg, #4f5669, #232733);
  border-radius: 1.5px 1.5px 0 0;
  pointer-events: none;
  z-index: 1;
  transition: background 0.3s ease;
}

.neg-phone-btn-action {
  top: -2.5px;
  left: 70px;
  width: 24px;
  height: 2.5px;
}

.neg-phone-btn-vol-up {
  top: -2.5px;
  left: 106px;
  width: 42px;
  height: 2.5px;
}

.neg-phone-btn-vol-down {
  top: -2.5px;
  left: 158px;
  width: 42px;
  height: 2.5px;
}

.neg-phone-btn-power {
  bottom: -2.5px;
  right: 120px;
  width: 58px;
  height: 2.5px;
  border-radius: 0 0 1.5px 1.5px;
  background: linear-gradient(0deg, #4f5669, #232733);
}

/* 手机极窄金属中框与精工外壳 (超薄微边框) */
.neg-phone-chassis {
  position: relative;
  border-radius: 26px;
  background: #0d0f15;
  padding: 5px 6px;
  border: 1px solid #363d4e;
  box-shadow: 
    0 0 0 1px #141720,
    0 0 0 2px #444e63,
    inset 0 1px 1.5px rgba(255, 255, 255, 0.28),
    inset 0 -1px 1.5px rgba(0, 0, 0, 0.8),
    0 24px 50px -12px rgba(15, 23, 42, 0.28),
    0 8px 20px -6px rgba(15, 23, 42, 0.12);
  transition: box-shadow 0.45s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.3s ease;
}

[data-mode="dark"] .neg-phone-chassis {
  background: #07090e;
  border-color: #384359;
  box-shadow: 
    0 0 0 1px #10131c,
    0 0 0 2px #495777,
    inset 0 1px 1.5px rgba(255, 255, 255, 0.16),
    inset 0 -1px 1.5px rgba(0, 0, 0, 0.95),
    0 30px 68px -12px rgba(0, 0, 0, 0.85),
    0 0 32px rgba(61, 115, 221, 0.2);
}

.neg-phone-mockup:hover .neg-phone-chassis {
  border-color: #4b5874;
  box-shadow: 
    0 0 0 1px #141720,
    0 0 0 2px #55627c,
    inset 0 1px 1.5px rgba(255, 255, 255, 0.36),
    inset 0 -1px 1.5px rgba(0, 0, 0, 0.8),
    0 34px 72px -14px rgba(15, 23, 42, 0.36),
    0 12px 28px -6px rgba(61, 115, 221, 0.2);
}

[data-mode="dark"] .neg-phone-mockup:hover .neg-phone-chassis {
  border-color: #556b98;
  box-shadow: 
    0 0 0 1px #10131c,
    0 0 0 2px #5b6f98,
    inset 0 1px 1.5px rgba(255, 255, 255, 0.22),
    inset 0 -1px 1.5px rgba(0, 0, 0, 0.95),
    0 38px 85px -14px rgba(0, 0, 0, 0.95),
    0 0 40px rgba(61, 115, 221, 0.35);
}

/* 前置微孔摄像头 (微米级极窄边框居中孔) */
.neg-phone-camera {
  position: absolute;
  left: 2px;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: #05070a;
  border: 0.5px solid #1f2533;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 6;
  pointer-events: none;
}

.neg-phone-cam-lens {
  width: 2px;
  height: 2px;
  border-radius: 50%;
  background: #0b192e;
  box-shadow: 0 0 2px #38bdf8;
}

/* 环境光传感器小孔 */
.neg-phone-sensor {
  position: absolute;
  left: 3px;
  top: calc(50% - 10px);
  width: 2px;
  height: 2px;
  border-radius: 50%;
  background: #0a0d14;
  border: 0.5px solid #1a202c;
  z-index: 6;
  pointer-events: none;
}

/* 手机全贴合高屏占比屏幕区域 */
.neg-phone-screen {
  position: relative;
  width: 100%;
  border-radius: 21px;
  overflow: hidden;
  background: #000000;
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.5);
  z-index: 2;
}

.neg-preview-img {
  width: 100%;
  height: auto;
  aspect-ratio: 1774 / 887;
  display: block;
  object-fit: cover;
  transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.neg-phone-mockup:hover .neg-preview-img {
  transform: scale(1.02);
}

/* 屏幕微弧度玻璃反光 */
.neg-phone-glass-shine {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 52%;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.14) 0%, rgba(255, 255, 255, 0.03) 55%, transparent 100%);
  pointer-events: none;
  z-index: 4;
}

[data-mode="dark"] .neg-phone-glass-shine {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.07) 0%, rgba(255, 255, 255, 0.02) 55%, transparent 100%);
}

/* 横屏底部 Home 触控手势指示条 */
.neg-phone-home-indicator {
  position: absolute;
  bottom: 6px;
  left: 50%;
  transform: translateX(-50%);
  width: 95px;
  height: 3.5px;
  background: rgba(255, 255, 255, 0.72);
  border-radius: 99px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  pointer-events: none;
  z-index: 5;
  transition: width 0.3s ease, background-color 0.3s ease;
}

.neg-phone-mockup:hover .neg-phone-home-indicator {
  width: 110px;
  background: rgba(255, 255, 255, 0.9);
}

/* 地面阴影 (精确模拟实物底盘投地阴影) */
.neg-ground-shadow {
  width: 90%;
  height: 28px;
  background: radial-gradient(ellipse at 50% 50%, rgba(10, 20, 48, 0.22), rgba(61, 115, 221, 0.08) 50%, transparent 75%);
  margin-top: -4px;
  filter: blur(10px);
  transition: transform 0.45s ease, opacity 0.45s ease;
}

[data-mode="dark"] .neg-ground-shadow {
  background: radial-gradient(ellipse at 50% 50%, rgba(0, 0, 0, 0.82), rgba(7, 18, 48, 0.35) 50%, transparent 75%);
}

.neg-device-stage:hover .neg-ground-shadow {
  transform: scale(0.95);
  opacity: 0.75;
}

/* =========================================================================
   笔记本电脑外框实训展台 (Laptop Mockup Stage)
   精工模拟：笔记本超窄黑边全面屏上盖、微型防眩光摄像头、阳极氧化铝合金质感边框、
   一体成型底座键盘前唇、居中单手开合凹槽、立体桌面投影
   ========================================================================= */
.neg-laptop-mockup {
  position: relative;
  width: 100%;
  max-width: 660px;
  margin: 0 auto;
  cursor: pointer;
  display: block;
  text-decoration: none;
  color: inherit;
  transition: transform 0.45s cubic-bezier(0.16, 1, 0.3, 1);
  z-index: 2;
}

.neg-laptop-mockup:hover {
  transform: translateY(-7px);
}

/* 笔记本屏幕上盖 (Lid) - 阳极氧化深空一体黑边框与微倒角 */
.neg-laptop-lid {
  position: relative;
  border-radius: 18px 18px 2px 2px;
  background: #0b0c10;
  padding: 11px 10px 17px 10px;
  border: 1px solid #282a32;
  box-shadow: 
    0 0 0 1px #08090c,
    inset 0 0 0 1px rgba(255, 255, 255, 0.08),
    0 20px 48px -10px rgba(15, 23, 42, 0.28);
  transition: border-color 0.4s ease, box-shadow 0.45s cubic-bezier(0.16, 1, 0.3, 1);
}

[data-mode="dark"] .neg-laptop-lid {
  background: #07080c;
  border-color: #323742;
  box-shadow: 
    0 0 0 1px #050608,
    inset 0 0 0 1px rgba(255, 255, 255, 0.12),
    0 24px 60px -12px rgba(0, 0, 0, 0.85),
    0 0 35px rgba(61, 115, 221, 0.18);
}

.neg-laptop-mockup:hover .neg-laptop-lid {
  border-color: #3d73dd;
  box-shadow: 
    0 0 0 1px #2563eb,
    inset 0 0 0 1px rgba(255, 255, 255, 0.18),
    0 28px 65px -12px rgba(15, 23, 42, 0.38),
    0 0 30px rgba(61, 115, 221, 0.3);
}

[data-mode="dark"] .neg-laptop-mockup:hover .neg-laptop-lid {
  border-color: #4d7fe0;
  box-shadow: 
    0 0 0 1px #3b6bcc,
    inset 0 0 0 1px rgba(255, 255, 255, 0.22),
    0 32px 75px -14px rgba(0, 0, 0, 0.95),
    0 0 45px rgba(61, 115, 221, 0.42);
}

/* 顶部微型居中摄像头孔位 */
.neg-laptop-camera {
  position: absolute;
  top: 5.5px;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: #040508;
  border: 0.5px solid #1c202a;
  box-shadow: inset 0 0 1px rgba(0, 0, 0, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
  z-index: 5;
}

.neg-laptop-lens {
  width: 2px;
  height: 2px;
  border-radius: 50%;
  background: #1e3a8a;
  opacity: 0.85;
  box-shadow: 0 0 1.5px #38bdf8;
}

/* 笔记本高贴合全贴合屏幕视口 */
.neg-laptop-screen {
  position: relative;
  width: 100%;
  border-radius: 6px 6px 2px 2px;
  overflow: hidden;
  background: #000000;
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.9);
  z-index: 2;
}

[data-mode="dark"] .neg-laptop-screen {
  background: #000000;
}

.neg-laptop-img {
  width: 100%;
  height: auto;
  aspect-ratio: 1400 / 780;
  display: block;
  object-fit: cover;
  transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.neg-laptop-mockup:hover .neg-laptop-img {
  transform: scale(1.018);
}

/* 屏幕斜角拟真玻璃高光镀膜 */
.neg-laptop-glare {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 100%;
  background: linear-gradient(118deg, rgba(255, 255, 255, 0.10) 0%, rgba(255, 255, 255, 0.02) 38%, transparent 56%);
  pointer-events: none;
  z-index: 3;
}

[data-mode="dark"] .neg-laptop-glare {
  background: linear-gradient(118deg, rgba(255, 255, 255, 0.07) 0%, rgba(255, 255, 255, 0.015) 38%, transparent 56%);
}

/* 笔记本电脑铝合金一体成型底座 (Unibody Base Deck & Lip) */
.neg-laptop-base {
  position: relative;
  width: calc(100% + 56px);
  margin-left: -28px;
  margin-top: -1px;
  z-index: 3;
  display: flex;
  flex-direction: column;
}

/* 底座转轴与机身顶部衔接层 (Hinge & Deck Shelf) */
.neg-laptop-base-top {
  height: 3.5px;
  border-radius: 3px 3px 0 0;
  background: linear-gradient(180deg, #d8dee8 0%, #c4ccd8 60%, #aeb7c4 100%);
  border-top: 1px solid rgba(255, 255, 255, 0.95);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.6);
  position: relative;
}

[data-mode="dark"] .neg-laptop-base-top {
  background: linear-gradient(180deg, #8a96a8 0%, #687486 60%, #4a5464 100%);
  border-top: 1px solid rgba(255, 255, 255, 0.55);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.25);
}

/* 单手开合凹槽 (Center Thumb Notch) */
.neg-laptop-notch {
  width: 78px;
  height: 3px;
  margin: 0 auto;
  border-radius: 0 0 3.5px 3.5px;
  background: linear-gradient(180deg, #2a313d 0%, #1a1e27 60%, #12151c 100%);
  border: 0.5px solid rgba(0, 0, 0, 0.35);
  border-top: none;
  box-shadow: 
    inset 0 1px 1.5px rgba(0, 0, 0, 0.75), 
    0 1px 0 rgba(255, 255, 255, 0.85);
}

[data-mode="dark"] .neg-laptop-notch {
  background: linear-gradient(180deg, #1b212c 0%, #10151e 60%, #0a0d13 100%);
  box-shadow: 
    inset 0 1px 1.5px rgba(0, 0, 0, 0.9), 
    0 1px 0 rgba(255, 255, 255, 0.45);
}

/* 底座前端一体化收边前唇 (Base Front Lip) - 带两侧微型脚垫/开槽微标 */
.neg-laptop-base-lip {
  position: relative;
  height: 6px;
  border-radius: 0 0 10px 10px;
  background: linear-gradient(180deg, #f1f4f8 0%, #cbd3de 35%, #9ea8b6 80%, #7e8794 100%);
  border-top: 1px solid rgba(255, 255, 255, 0.9);
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.35);
}

[data-mode="dark"] .neg-laptop-base-lip {
  background: linear-gradient(180deg, #c0cbd8 0%, #94a2b3 35%, #626f81 80%, #434c5a 100%);
  border-top: 1px solid rgba(255, 255, 255, 0.6);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.7);
}

/* 前唇两侧精工微槽 (微型出音孔/散热脚垫微凹痕) */
.neg-laptop-base-lip::before,
.neg-laptop-base-lip::after {
  content: '';
  position: absolute;
  top: 2px;
  width: 32px;
  height: 1.5px;
  background: rgba(30, 41, 59, 0.38);
  border-radius: 1px;
  box-shadow: 0 0.5px 0 rgba(255, 255, 255, 0.5);
}

.neg-laptop-base-lip::before {
  left: 13%;
}

.neg-laptop-base-lip::after {
  right: 13%;
}

[data-mode="dark"] .neg-laptop-base-lip::before,
[data-mode="dark"] .neg-laptop-base-lip::after {
  background: rgba(15, 23, 42, 0.65);
  box-shadow: 0 0.5px 0 rgba(255, 255, 255, 0.25);
}

/* 笔记本桌面实感双层软阴影 (Dual-layer Realistic Surface Drop Shadow) */
.neg-laptop-shadow {
  position: relative;
  width: 96%;
  max-width: 680px;
  height: 36px;
  margin: -2px auto 0;
  pointer-events: none;
  background: none;
  filter: none;
  transition: transform 0.45s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.45s ease;
}

.neg-laptop-shadow::before {
  content: '';
  position: absolute;
  top: 0;
  left: 2%;
  right: 2%;
  height: 6px;
  border-radius: 50%;
  background: rgba(15, 23, 42, 0.6);
  filter: blur(4px);
}

.neg-laptop-shadow::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 0;
  right: 0;
  height: 32px;
  border-radius: 50%;
  background: radial-gradient(ellipse at 50% 25%, rgba(15, 23, 42, 0.38) 0%, rgba(15, 23, 42, 0.14) 46%, transparent 72%);
  filter: blur(12px);
}

[data-mode="dark"] .neg-laptop-shadow {
  background: none;
}

[data-mode="dark"] .neg-laptop-shadow::before {
  background: rgba(0, 0, 0, 0.95);
  filter: blur(4px);
}

[data-mode="dark"] .neg-laptop-shadow::after {
  background: radial-gradient(ellipse at 50% 25%, rgba(0, 0, 0, 0.98) 0%, rgba(61, 115, 221, 0.25) 46%, transparent 72%);
  filter: blur(14px);
}

.neg-device-stage:hover .neg-laptop-shadow {
  transform: scale(0.96) translateY(2px);
  opacity: 0.8;
}

@media (max-width: 640px) {
  .neg-laptop-base {
    width: calc(100% + 24px);
    margin-left: -12px;
  }
  .neg-laptop-lid {
    padding: 8px 7px 12px 7px;
    border-radius: 14px 14px 2px 2px;
  }
  .neg-laptop-notch {
    width: 56px;
    height: 2.5px;
  }
  .neg-laptop-base-lip::before {
    left: 10%;
    width: 20px;
  }
  .neg-laptop-base-lip::after {
    right: 10%;
    width: 20px;
  }
}

/* =========================================================================
   桌面客户端软件窗口外框实训展台 (Desktop Software Window Mockup Stage)
   标准包含：窗口外框、标题栏、能猫微标与标题、标准最小化/最大化/关闭按钮三件套
   ========================================================================= */
.neg-window-mockup {
  position: relative;
  width: 100%;
  cursor: pointer;
  display: block;
  text-decoration: none;
  color: inherit;
  transition: transform 0.45s cubic-bezier(0.16, 1, 0.3, 1);
  z-index: 2;
}

.neg-window-mockup:hover {
  transform: translateY(-8px);
}

.neg-window-chassis {
  position: relative;
  border-radius: 12px;
  background: #ffffff;
  border: 1px solid rgba(61, 115, 221, 0.25);
  box-shadow: 
    0 0 0 1px rgba(10, 20, 48, 0.06),
    0 0 0 2px rgba(61, 115, 221, 0.12),
    0 24px 55px -12px rgba(15, 23, 42, 0.22),
    0 8px 22px -6px rgba(15, 23, 42, 0.1);
  overflow: hidden;
  transition: box-shadow 0.45s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.3s ease;
}

[data-mode="dark"] .neg-window-chassis {
  background: #090e1a;
  border-color: #2b3b5e;
  box-shadow: 
    0 0 0 1px #0e172a,
    0 0 0 2px #3b4e76,
    0 32px 75px -14px rgba(0, 0, 0, 0.88),
    0 0 35px rgba(61, 115, 221, 0.22);
}

.neg-window-mockup:hover .neg-window-chassis {
  border-color: #4b6cb7;
  box-shadow: 
    0 0 0 1px rgba(10, 20, 48, 0.08),
    0 0 0 2px rgba(61, 115, 221, 0.25),
    0 34px 72px -14px rgba(15, 23, 42, 0.32),
    0 12px 28px -6px rgba(61, 115, 221, 0.25);
}

[data-mode="dark"] .neg-window-mockup:hover .neg-window-chassis {
  border-color: #5572b8;
  box-shadow: 
    0 0 0 1px #0e172a,
    0 0 0 2px #4d669c,
    0 40px 90px -14px rgba(0, 0, 0, 0.95),
    0 0 45px rgba(61, 115, 221, 0.38);
}

/* 动效：点击窗口控件时的反馈 */
@keyframes winChassisShake {
  0%, 100% { transform: translateX(0); }
  20%, 60% { transform: translateX(-4px); }
  40%, 80% { transform: translateX(4px); }
}
.neg-window-chassis.is-shaking {
  animation: winChassisShake 0.4s ease;
}

@keyframes winChassisPulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.018); }
  100% { transform: scale(1); }
}
.neg-window-chassis.is-pulsing {
  animation: winChassisPulse 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

/* 软件窗口顶部标准控制栏 (极简紧凑无标题栏) */
.neg-window-titlebar {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  height: 24px;
  padding: 0;
  background: linear-gradient(180deg, #edf3fc 0%, #e2ebf8 100%);
  border-bottom: 1px solid rgba(61, 115, 221, 0.16);
  user-select: none;
  -webkit-user-select: none;
  transition: background 0.3s ease, border-color 0.3s ease;
}

[data-mode="dark"] .neg-window-titlebar {
  background: linear-gradient(180deg, #131f38 0%, #0d172c 100%);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.neg-window-identity {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
}

.neg-window-app-icon {
  width: 17px;
  height: 17px;
  object-fit: contain;
  flex-shrink: 0;
  border-radius: 3px;
}

.neg-window-app-title {
  font-size: 12px;
  font-weight: 600;
  color: #1e293b;
  letter-spacing: 0.02em;
  white-space: nowrap;
  transition: color 0.3s ease;
}

[data-mode="dark"] .neg-window-app-title {
  color: #e2e8f0;
}

.neg-window-ver-badge {
  font-size: 10px;
  letter-spacing: 0.04em;
  padding: 1px 7px;
  border-radius: 4px;
  background: rgba(61, 115, 221, 0.12);
  color: #2d5dbd;
  border: 1px solid rgba(61, 115, 221, 0.22);
  white-space: nowrap;
}

[data-mode="dark"] .neg-window-ver-badge {
  background: rgba(61, 115, 221, 0.22);
  color: #9bb7f1;
  border-color: rgba(61, 115, 221, 0.4);
}

/* 软件窗口控制按钮组 (最小化、最大化、关闭) */
.neg-window-controls {
  display: flex;
  align-items: stretch;
  height: 100%;
  flex-shrink: 0;
}

.neg-win-btn {
  width: 34px;
  height: 100%;
  padding: 0;
  margin: 0;
  border: none;
  background: transparent;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #475569;
  cursor: pointer;
  outline: none;
  transition: background-color 0.15s ease, color 0.15s ease;
}

[data-mode="dark"] .neg-win-btn {
  color: #94a3b8;
}

.neg-win-btn svg {
  width: 9.5px;
  height: 9.5px;
  stroke: currentColor;
  stroke-width: 1.25;
  stroke-linecap: round;
  stroke-linejoin: round;
  fill: none;
  display: block;
  pointer-events: none;
}

.neg-win-min:hover,
.neg-win-max:hover {
  background-color: rgba(0, 0, 0, 0.08);
  color: #0f172a;
}

[data-mode="dark"] .neg-win-min:hover,
[data-mode="dark"] .neg-win-max:hover {
  background-color: rgba(255, 255, 255, 0.1);
  color: #f8fafc;
}

/* 经典 Windows 关闭按钮高亮红底色 */
.neg-win-close:hover {
  background-color: #e81123 !important;
  color: #ffffff !important;
}

/* 软件屏幕截图区域 */
.neg-window-screen {
  position: relative;
  width: 100%;
  background: #ffffff;
  overflow: hidden;
  z-index: 2;
}

[data-mode="dark"] .neg-window-screen {
  background: #090e1a;
}

.neg-window-img {
  width: 100%;
  height: auto;
  aspect-ratio: 1400 / 780;
  display: block;
  object-fit: cover;
  transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.neg-window-mockup:hover .neg-window-img {
  transform: scale(1.018);
}

/* 软件窗口微透光质感 */
.neg-window-glass-shine {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 38%;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.12) 0%, rgba(255, 255, 255, 0.02) 60%, transparent 100%);
  pointer-events: none;
  z-index: 3;
}

[data-mode="dark"] .neg-window-glass-shine {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.06) 0%, rgba(255, 255, 255, 0.01) 60%, transparent 100%);
}

@media (max-width: 640px) {
  .neg-window-titlebar {
    height: 20px;
    padding-left: 0;
  }
  .neg-win-btn {
    width: 26px;
  }
  .neg-win-btn svg {
    width: 8.5px;
    height: 8.5px;
  }
}

/* 占位展台卡片 (高质感工科蓝图风格，实体纯色背景以完全遮蔽地面底纹水印) */
.neg-placeholder-panel {
  position: relative;
  width: 100%;
  max-width: 660px;
  background: #ffffff;
  border: 1px solid rgba(61, 115, 221, 0.22);
  border-radius: 14px;
  padding: 24px 28px;
  box-shadow: 
    0 0 0 1px rgba(10, 20, 48, 0.08),
    0 0 0 2px rgba(61, 115, 221, 0.22),
    0 34px 75px -16px rgba(7, 18, 48, 0.16);
  transition: transform .4s var(--ease), box-shadow .4s var(--ease);
}
[data-mode="dark"] .neg-placeholder-panel {
  background: #090e1a;
  border-color: #2b3b5e;
  box-shadow: 
    0 0 0 1px #0e172a,
    0 0 0 2px #3b4e76,
    0 38px 85px -16px rgba(0, 0, 0, 0.72),
    0 0 0 1px rgba(150, 180, 241, 0.18);
}
.neg-placeholder-panel:hover {
  transform: translateY(-4px);
  box-shadow: 0 44px 95px -18px rgba(61, 115, 221, 0.32);
}

.neg-card-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 14px;
  border-bottom: 1px dashed var(--line-d);
  margin-bottom: 18px;
  font-size: 11.5px;
}
.neg-card-topbar .dwg-id {
  font-family: var(--f-mono);
  color: var(--acc-d2);
  letter-spacing: .08em;
  font-weight: 500;
}
.neg-card-topbar .status-pill {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--mint);
  font-family: var(--f-mono);
  font-size: 11px;
}
.neg-card-topbar .status-pill::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--mint);
  box-shadow: 0 0 8px var(--mint);
}
.neg-card-topbar .status-pill.is-orange {
  color: var(--orange);
}
.neg-card-topbar .status-pill.is-orange::before {
  background: var(--orange);
  box-shadow: 0 0 8px var(--orange);
}
.neg-card-topbar .status-pill.is-blue {
  color: var(--blue);
}
.neg-card-topbar .status-pill.is-blue::before {
  background: var(--blue);
  box-shadow: 0 0 8px var(--blue);
}

.neg-hero-title.is-compact {
  font-size: clamp(23px, 2.7vw, 36px);
  line-height: 1.25;
}

.neg-card-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 18px;
}
.neg-grid-box {
  background: rgba(var(--bl), .06);
  border: 1px solid var(--line-d);
  border-radius: 8px;
  padding: 16px;
  transition: background .25s ease, border-color .25s ease;
}
.neg-grid-box:hover {
  background: rgba(var(--bl), .1);
  border-color: rgba(61, 115, 221, .35);
}
.neg-grid-box h4 {
  font-size: 14px;
  font-weight: 600;
  color: var(--tx-d);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.neg-grid-box h4 i {
  font-family: var(--f-mono);
  font-size: 10px;
  color: var(--blue);
  background: rgba(var(--bl), .14);
  padding: 2px 6px;
  border-radius: 3px;
  font-style: normal;
}
.neg-grid-box p {
  font-size: 12.5px;
  color: var(--mu-d);
  line-height: 1.6;
}

.neg-card-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  padding-top: 16px;
  border-top: 1px solid var(--line-d);
}
.neg-stat-item {
  display: flex;
  flex-direction: column;
}
.neg-stat-item span {
  font-size: 11.5px;
  color: var(--mu-d);
  margin-bottom: 4px;
}
.neg-stat-item b {
  font-family: var(--f-disp);
  font-size: 20px;
  color: var(--tx-d);
  font-weight: 700;
}

/* 底部进度指示与滚动引导 */
.neg-cover-footer {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-bottom: 26px;
  gap: 20px;
  z-index: 5;
}

/* 底部轮播控制器与分段指示器 */
.neg-carousel-controls {
  display: flex;
  align-items: center;
  gap: 14px;
}
.neg-ctrl-btn {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 1px solid var(--line-d);
  background: rgba(var(--bl), .08);
  color: var(--tx-d);
  display: grid;
  place-items: center;
  font-size: 16px;
  line-height: 1;
  cursor: pointer;
  transition: all .2s ease;
}
.neg-ctrl-btn:hover {
  background: var(--blue);
  color: #fff;
  border-color: var(--blue);
  transform: scale(1.1);
}

.neg-segmented-track {
  display: flex;
  align-items: center;
  gap: 10px;
}
.neg-seg-item {
  display: flex;
  align-items: center;
  gap: 8px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px 6px;
  border-radius: 4px;
  transition: opacity .25s ease;
  opacity: .45;
}
.neg-seg-item:hover {
  opacity: .8;
}
.neg-seg-item.active {
  opacity: 1;
}
.neg-seg-num {
  font-size: 11px;
  color: var(--mu-d);
  letter-spacing: .08em;
  font-weight: 500;
}
.neg-seg-item.active .neg-seg-num {
  color: var(--blue);
  font-weight: 700;
}
.neg-seg-bar {
  width: 54px;
  height: 3px;
  border-radius: 2px;
  background: var(--line-d);
  position: relative;
  overflow: hidden;
}
.neg-seg-bar i {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 0%;
  background: var(--blue);
  border-radius: 2px;
  transition: width .25s ease;
}
.neg-seg-item.active .neg-seg-bar i {
  width: 100%;
}

/* 底部滚动探索引导：极简科技动态渐变色胶囊 (流光动态渐变边框) */
.neg-scroll-down {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-size: 13.5px;
  font-weight: 550;
  letter-spacing: .02em;
  color: #07153a;
  padding: 8px 20px 8px 16px;
  border-radius: 999px;
  cursor: pointer;
  background: linear-gradient(#f4f8fe, #e9f1fc) padding-box,
              linear-gradient(135deg, #3d73dd, #00d2ff, #7b5cff, #3d73dd) border-box;
  background-size: auto, 300% 300%;
  border: 1.5px solid transparent;
  animation: techGradientMove 5s linear infinite;
  box-shadow: 
    0 4px 18px -2px rgba(61, 115, 221, 0.18),
    0 2px 6px rgba(10, 20, 48, 0.04);
  transition: all .25s cubic-bezier(0.16, 1, 0.3, 1);
  user-select: none;
  -webkit-user-select: none;
}

@keyframes techGradientMove {
  0% { background-position: 0% 50%, 0% 50%; }
  50% { background-position: 0% 50%, 100% 50%; }
  100% { background-position: 0% 50%, 0% 50%; }
}

/* 左侧呼吸指示微点 */
.neg-scroll-down::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #3d73dd;
  box-shadow: 0 0 0 0 rgba(61, 115, 221, 0.7);
  animation: negPulseDot 2.2s infinite ease-out;
  flex-shrink: 0;
}

@keyframes negPulseDot {
  0% { box-shadow: 0 0 0 0 rgba(61, 115, 221, 0.7); transform: scale(0.95); }
  65% { box-shadow: 0 0 0 6px rgba(61, 115, 221, 0); transform: scale(1.05); }
  100% { box-shadow: 0 0 0 0 rgba(61, 115, 221, 0); transform: scale(0.95); }
}

.neg-scroll-down span {
  color: inherit;
  line-height: 1;
}

.neg-scroll-down svg {
  width: 14px;
  height: 14px;
  color: #3d73dd;
  stroke-width: 1.8px;
  animation: negBounce 2s cubic-bezier(.45, 0, .55, 1) infinite;
  flex-shrink: 0;
  transition: transform .2s ease;
}

@keyframes negBounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(3.5px); }
}

.neg-scroll-down:hover {
  transform: translateY(-2px);
  box-shadow: 
    0 8px 26px -2px rgba(61, 115, 221, 0.32),
    0 0 16px rgba(0, 210, 255, 0.25);
}

.neg-scroll-down:hover svg {
  animation-duration: 1.2s;
}

.neg-scroll-down:active {
  transform: translateY(0);
  box-shadow: 
    0 2px 8px -1px rgba(61, 115, 221, 0.2),
    inset 0 1px 1px rgba(0, 0, 0, 0.04);
}

/* 暗色模式适配：极简科技流光胶囊 (深邃黑蓝底 + 霓虹渐变流光边框) */
[data-mode="dark"] .neg-scroll-down {
  color: #eaf0fc;
  background: linear-gradient(#0b1836, #071026) padding-box,
              linear-gradient(135deg, #3d73dd, #00d2ff, #a855f7, #3d73dd) border-box;
  background-size: auto, 300% 300%;
  border: 1.5px solid transparent;
  box-shadow: 
    0 8px 24px -2px rgba(0, 0, 0, 0.6),
    0 0 14px rgba(61, 115, 221, 0.25);
}

[data-mode="dark"] .neg-scroll-down::before {
  background: #00d2ff;
  box-shadow: 0 0 0 0 rgba(0, 210, 255, 0.8);
}

[data-mode="dark"] .neg-scroll-down svg {
  color: #00d2ff;
}

[data-mode="dark"] .neg-scroll-down:hover {
  box-shadow: 
    0 12px 30px -2px rgba(0, 0, 0, 0.75),
    0 0 20px rgba(0, 210, 255, 0.4);
}

/* 移动端适配 */
@media (max-width: 960px) {
  .neg-nav-links {
    display: none;
  }
  .neg-cover-body {
    flex-direction: column;
    justify-content: center;
    padding-top: 40px;
    gap: 30px;
  }
  .neg-cover-left {
    flex: none;
    max-width: 100%;
    text-align: center;
    align-items: center;
  }
  .neg-hero-actions {
    justify-content: center;
  }
  .neg-cover-right {
    flex: none;
    width: 100%;
  }
  .neg-device-stage {
    max-width: 100%;
  }
}

/* ---------- 8. Simulation Classroom Modal (#modal-sim) ---------- */
.sim-modal-box {
  max-width: 960px;
}
.sim-mhead {
  margin-bottom: 18px;
}
.sim-mhead-top {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
  font-size: 11px;
}
.sim-dwg-badge {
  color: var(--acc-d);
  opacity: .85;
}
.sim-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 18px;
  overflow-x: auto;
  padding-bottom: 4px;
}
.sim-tab {
  height: 36px;
  padding: 0 16px;
  border-radius: 6px;
  font-size: 13px;
  background: rgba(150, 180, 241, 0.08);
  border: 1px solid rgba(150, 180, 241, 0.18);
  color: var(--mu-d);
  cursor: pointer;
  white-space: nowrap;
  transition: all .25s var(--ease);
}
.sim-tab:hover {
  background: rgba(61, 115, 221, 0.2);
  color: #fff;
}
.sim-tab.on {
  background: var(--blue);
  color: #fff;
  border-color: var(--blue);
}
.sim-viewport {
  position: relative;
  background: #04091a;
  border: 1px solid rgba(150, 180, 241, 0.2);
  border-radius: 10px;
  padding: 16px;
  margin-bottom: 18px;
  overflow: hidden;
}
.sim-viewport-grid {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(150, 180, 241, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(150, 180, 241, 0.06) 1px, transparent 1px);
  background-size: 24px 24px;
}
.sim-board-hud {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 11px;
  color: var(--mu-d);
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(150, 180, 241, 0.1);
}
.sim-live-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--mint);
}
.sim-schematic {
  display: flex;
  align-items: center;
  justify-content: space-around;
  gap: 8px;
  padding: 24px 10px;
  background: rgba(7, 18, 48, 0.6);
  border-radius: 8px;
  border: 1px solid rgba(150, 180, 241, 0.12);
  margin-bottom: 16px;
}
.circuit-node {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 10px 14px;
  border-radius: 8px;
  background: rgba(11, 26, 61, 0.9);
  border: 1px solid rgba(150, 180, 241, 0.25);
  text-align: center;
  min-width: 110px;
}
.node-icon { font-size: 20px; }
.node-title { font-size: 12px; font-weight: 600; color: #fff; }
.node-val { font-size: 11px; color: var(--cyan); }
.text-mint { color: var(--mint); }
.circuit-wire {
  position: relative;
  flex-grow: 1;
  height: 2px;
  background: var(--blue);
  margin: 0 4px;
}
.flow-dot {
  position: absolute;
  top: -3px; left: 0;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 6px var(--cyan);
  animation: flowWire 2s infinite linear;
}
@keyframes flowWire { 0% { left: 0; } 100% { left: 100%; } }

.sim-scope-embed {
  background: #020714;
  border-radius: 6px;
  border: 1px solid rgba(150, 180, 241, 0.15);
  padding: 10px;
}
.sim-scope-head {
  display: flex;
  justify-content: space-between;
  font-size: 10.5px;
  color: var(--cyan);
  margin-bottom: 6px;
}
.sim-wave-box {
  height: 150px;
  position: relative;
}
#simModalCanvas {
  width: 100%;
  height: 100%;
  display: block;
}
.sim-mfoot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding-top: 14px;
  border-top: 1px solid var(--n-line);
}
.sim-mfoot-info p {
  font-size: 12.5px;
  color: var(--mu-d);
}
.sim-mfoot-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}


@media (max-width: 768px) {
  .neg-strip-desc {
    display: none;
  }
  .neg-strip-inner {
    gap: 8px;
  }
  .neg-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }
  .neg-head-actions {
    align-items: flex-start;
    width: 100%;
  }
  .neg-btn-group {
    width: 100%;
    flex-direction: column;
  }
  .neg-btn-group .btn {
    width: 100%;
  }
  .neg-bench {
    grid-template-columns: 1fr;
  }
  .bench-scope,
  .bench-ai {
    grid-column: span 1;
  }
  .sim-schematic {
    flex-wrap: wrap;
  }
  .circuit-wire {
    display: none;
  }
  .circuit-node {
    width: calc(50% - 8px);
  }
}