/* ===== Reset & Base ===== */
  *,*::before,*::after { box-sizing:border-box; margin:0; padding:0; }
  :root {
    --bg-deep: #050912;
    --bg: #0a0f1c;
    --surface: #111827;
    --surface-hi: #1a2235;
    --line: rgba(255,255,255,0.08);
    --line-hi: rgba(0,212,255,0.25);
    --text: #f5f7fb;
    --text-dim: #9aa3b8;
    --text-faint: #5b6478;
    --cherenkov: #00d4ff;
    --cherenkov-deep: #0070ff;
    --amber: #ffb547;
    --radius: 16px;
    --easing: cubic-bezier(.16,1,.3,1);
  }
  html { scroll-behavior:smooth; }
  body {
    background: var(--bg);
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "HarmonyOS Sans SC", "Noto Sans SC", "Microsoft YaHei", system-ui, sans-serif;
    font-feature-settings: "tnum", "ss01";
    -webkit-font-smoothing: antialiased;
    line-height: 1.5;
    overflow-x: hidden;
    position: relative;
  }

  /* ===== Site-wide ambient layer ===== */
  #ambient-canvas {
    position: fixed; inset: 0; width:100vw; height:100vh;
    z-index: 0; pointer-events:none; opacity: .55;
  }
  /* SVG contour pattern as section ambient background */
  .contour-bg {
    position: absolute; inset: 0; pointer-events:none; z-index: 0;
    background-image:
      radial-gradient(ellipse 80% 60% at 20% 30%, transparent 0%, transparent 28%, rgba(0,212,255,0.04) 28.5%, transparent 29%),
      radial-gradient(ellipse 80% 60% at 20% 30%, transparent 0%, transparent 38%, rgba(0,212,255,0.035) 38.5%, transparent 39%),
      radial-gradient(ellipse 80% 60% at 20% 30%, transparent 0%, transparent 48%, rgba(0,212,255,0.03) 48.5%, transparent 49%),
      radial-gradient(ellipse 70% 90% at 85% 75%, transparent 0%, transparent 22%, rgba(255,181,71,0.025) 22.5%, transparent 23%),
      radial-gradient(ellipse 70% 90% at 85% 75%, transparent 0%, transparent 32%, rgba(255,181,71,0.02) 32.5%, transparent 33%),
      radial-gradient(ellipse 70% 90% at 85% 75%, transparent 0%, transparent 42%, rgba(255,181,71,0.018) 42.5%, transparent 43%);
    mask-image: linear-gradient(to bottom, transparent, black 15%, black 85%, transparent);
    -webkit-mask-image: linear-gradient(to bottom, transparent, black 15%, black 85%, transparent);
  }
  /* Cursor radiation aura */
  #cursor-glow {
    position: fixed; top:0; left:0; width: 600px; height: 600px;
    margin: -300px 0 0 -300px;
    pointer-events:none; z-index: 1;
    background: radial-gradient(circle, rgba(0,212,255,0.10) 0%, rgba(0,212,255,0.04) 25%, transparent 60%);
    transform: translate(50vw, 50vh);
    transition: opacity .4s var(--easing);
    mix-blend-mode: screen;
    will-change: transform;
  }
  @media (pointer: coarse) { #cursor-glow { display:none; } }

  /* Section scanline (one-shot entry sweep) */
  .scan-host { position: relative; overflow: hidden; }
  .scan-host .scanline {
    content:""; position:absolute; left:0; right:0; top: 0;
    height: 2px; pointer-events:none; z-index: 5;
    background: linear-gradient(to right, transparent, rgba(0,212,255,0), rgba(0,212,255,0.9), rgba(0,212,255,0), transparent);
    box-shadow: 0 0 20px rgba(0,212,255,0.6);
    opacity: 0;
  }
  .scan-host.scan-go .scanline {
    animation: scanSweep 1.6s cubic-bezier(.4,0,.2,1) forwards;
  }
  @keyframes scanSweep {
    0% { top: 0; opacity: 0; }
    8% { opacity: 1; }
    92% { opacity: 1; }
    100% { top: 100%; opacity: 0; }
  }

  /* Make all primary content sit above ambient/cursor */
  .nav, .hero, section, footer { position: relative; z-index: 2; }
  /* Sections need to be transparent enough to let ambient show */
  section { background: transparent; }
  .stats { background: linear-gradient(180deg, rgba(10,15,28,0.4) 0%, rgba(5,9,18,0.7) 100%); }
  .pillars { background: linear-gradient(180deg, rgba(10,15,28,0.3) 0%, rgba(6,10,20,0.6) 50%, rgba(10,15,28,0.3) 100%); }
  .certs { background:
      radial-gradient(ellipse at 80% 50%, rgba(0,112,255,.08), transparent 60%),
      rgba(5,9,18,0.6); }
  .cta-band { background:
      radial-gradient(ellipse at center, rgba(0,212,255,.12), transparent 60%),
      rgba(5,9,18,0.7); }
  footer { background: rgba(5,9,18,0.85); }
  a { color: inherit; text-decoration: none; }
  img { max-width: 100%; display: block; }
  button { font-family: inherit; }

  /* ===== Layout helpers ===== */
  .wrap { max-width: 1240px; margin: 0 auto; padding: 0 32px; }
  @media (max-width: 720px) { .wrap { padding: 0 20px; } }
  .eyebrow {
    display:inline-flex; align-items:center; gap:8px;
    font-size: 13px; letter-spacing: .14em; text-transform: uppercase;
    color: var(--cherenkov); font-weight: 500;
  }
  .eyebrow::before {
    content:""; width:24px; height:1px; background: var(--cherenkov); opacity:.7;
  }
  .h1 { font-size: clamp(40px, 6vw, 84px); font-weight: 700; letter-spacing: -0.02em; line-height: 1.05; }
  .h2 { font-size: clamp(32px, 4.5vw, 56px); font-weight: 700; letter-spacing: -0.02em; line-height: 1.1; }
  .h3 { font-size: clamp(22px, 2.4vw, 30px); font-weight: 600; letter-spacing: -0.01em; }
  .lead { font-size: clamp(16px, 1.4vw, 19px); color: var(--text-dim); line-height: 1.7; max-width: 62ch; }

  /* ===== Nav ===== */
  .nav {
    position: fixed; top: 0; left: 0; right: 0; z-index: 100;
    backdrop-filter: blur(20px) saturate(1.6);
    -webkit-backdrop-filter: blur(20px) saturate(1.6);
    background: rgba(10,15,28,0.55);
    border-bottom: 1px solid rgba(255,255,255,0.04);
    transition: background .4s var(--easing), border-color .4s var(--easing);
  }
  .nav-inner {
    max-width: 1240px; margin: 0 auto; padding: 14px 32px;
    display: flex; align-items: center; justify-content: space-between;
  }
  .brand { display:flex; align-items:center; gap:10px; font-weight:600; font-size:15px; letter-spacing:-0.005em; }
  .brand-mark {
    width: 30px; height: 30px; position: relative; flex-shrink:0;
  }
  .brand-mark::before, .brand-mark::after {
    content:""; position:absolute; inset:0; border:1.5px solid var(--cherenkov); border-radius:50%;
  }
  .brand-mark::after {
    inset: 7px; border-color: var(--cherenkov); opacity: .5;
  }
  .brand-mark .dot {
    position:absolute; left:50%; top:50%; width:6px; height:6px; background: var(--cherenkov);
    border-radius:50%; transform: translate(-50%,-50%);
    box-shadow: 0 0 12px var(--cherenkov);
  }
  .menu { display:flex; gap: 36px; }
  .menu a { font-size: 14px; color: var(--text-dim); transition: color .2s; }
  .menu a:hover { color: var(--text); }
  .nav-cta {
    padding: 9px 18px; border: 1px solid rgba(0,212,255,.35); border-radius: 999px;
    color: var(--cherenkov); font-size: 13.5px; font-weight: 500;
    background: rgba(0,212,255,.05); transition: all .2s;
  }
  .nav-cta:hover { background: rgba(0,212,255,.15); border-color: var(--cherenkov); }
  @media (max-width: 880px) { .menu { display:none; } }

  /* Mini geiger meter in nav */
  .geiger {
    display:flex; align-items:center; gap:10px; padding: 7px 12px;
    border: 1px solid rgba(255,255,255,0.08); border-radius: 999px;
    background: rgba(0,0,0,0.25); font-family: ui-monospace, "SF Mono", Consolas, monospace;
    font-size: 11.5px; letter-spacing: .04em; color: var(--text-dim);
    margin-right: 14px;
  }
  .geiger .live-dot {
    width: 6px; height: 6px; border-radius: 50%; background: var(--cherenkov);
    box-shadow: 0 0 8px var(--cherenkov);
    animation: livePulse 1.4s ease-in-out infinite;
  }
  @keyframes livePulse { 0%,100% { opacity:1; } 50% { opacity:.35; } }
  .geiger svg { display:block; }
  .geiger .reading { color: var(--cherenkov); font-weight: 500; min-width: 56px; text-align:right; }
  @media (max-width: 720px) { .geiger { display:none; } }

  /* Audio toggle button */
  .audio-toggle {
    width: 32px; height: 32px; border-radius: 50%;
    background: rgba(0,0,0,0.25); border: 1px solid rgba(255,255,255,0.1);
    color: var(--text-dim); cursor: pointer; display:grid; place-items:center;
    margin-right: 12px; transition: all .2s;
  }
  .audio-toggle:hover { color: var(--cherenkov); border-color: var(--line-hi); }
  .audio-toggle.on { color: var(--cherenkov); border-color: rgba(0,212,255,.45); background: rgba(0,212,255,.08); }
  .audio-toggle.on::after {
    content:""; position: absolute; width:32px; height:32px; border-radius:50%;
    border: 1px solid var(--cherenkov); animation: audioRing 1.6s ease-out infinite; pointer-events:none;
  }
  @keyframes audioRing { 0% { transform: scale(1); opacity:.6; } 100% { transform: scale(1.7); opacity:0; } }
  .audio-toggle { position: relative; }
  @media (max-width: 720px) { .audio-toggle { display:none; } }

  /* Number CRT flicker on stat zone hover */
  .stats-grid.hot .stat-num { animation: numFlicker 1.8s steps(2,end) infinite; }
  @keyframes numFlicker {
    0%, 96%, 100% { text-shadow: none; filter: none; }
    97% { text-shadow: 0 0 18px var(--cherenkov), 0 0 4px var(--cherenkov); filter: brightness(1.6) hue-rotate(-5deg); }
    97.5% { text-shadow: none; filter: brightness(.85); }
    98% { text-shadow: 0 0 22px var(--cherenkov); filter: brightness(1.4); }
    98.5% { text-shadow: none; filter: brightness(1); }
  }
  .geiger .reading { transition: text-shadow .15s; }
  .geiger.spike .reading {
    text-shadow: 0 0 14px var(--cherenkov), 0 0 4px var(--cherenkov);
    color: #fff;
  }

  /* ===== Visualization lab section ===== */
  .lab-grid {
    display:grid; grid-template-columns: 1fr 1fr; gap: 24px;
  }
  @media (max-width: 900px) { .lab-grid { grid-template-columns: 1fr; } }
  .lab-card {
    background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.005));
    border: 1px solid var(--line); border-radius: 20px;
    overflow: hidden; position: relative;
    display: flex; flex-direction: column;
  }
  .lab-stage {
    aspect-ratio: 4/3; position: relative;
    background:
      radial-gradient(ellipse at center, rgba(0,212,255,0.08), transparent 70%),
      linear-gradient(180deg, #060c1d 0%, #030611 100%);
    overflow: hidden;
  }
  .lab-caption { padding: 24px 28px 28px; border-top: 1px solid var(--line); }
  .lab-caption .eyebrow { font-size: 11.5px; }
  .lab-caption h4 { font-size: 19px; font-weight: 600; margin: 10px 0; letter-spacing: -.01em; }
  .lab-caption p { font-size: 13.5px; color: var(--text-dim); line-height: 1.65; }
  .lab-readout {
    position: absolute; top: 14px; right: 16px; z-index: 3;
    font-family: ui-monospace, "SF Mono", Consolas, monospace;
    font-size: 11px; letter-spacing: .08em; color: var(--text-dim);
    display:flex; flex-direction:column; align-items:flex-end; gap:4px;
  }
  .lab-readout .val { color: var(--cherenkov); font-weight: 500; }

  /* ===== 3D atom ===== */
  .atom-stage { perspective: 1200px; }
  .atom {
    position: absolute; left: 50%; top: 50%;
    width: 280px; height: 280px;
    transform: translate(-50%, -50%);
    transform-style: preserve-3d;
    animation: atomTilt 20s linear infinite;
  }
  @keyframes atomTilt {
    0% { transform: translate(-50%,-50%) rotateX(70deg) rotateZ(0deg); }
    100% { transform: translate(-50%,-50%) rotateX(70deg) rotateZ(360deg); }
  }
  .atom .nucleus {
    position: absolute; left: 50%; top: 50%;
    width: 26px; height: 26px; margin: -13px 0 0 -13px;
    border-radius: 50%;
    background: radial-gradient(circle at 35% 35%, #ffffff, #00d4ff 50%, #0070ff 100%);
    box-shadow: 0 0 30px rgba(0,212,255,0.9), 0 0 60px rgba(0,212,255,0.4);
    transform: translateZ(0);
  }
  .atom .orbit {
    position: absolute; inset: 0; border-radius: 50%;
    border: 1px solid rgba(0,212,255,0.35);
    transform-style: preserve-3d;
  }
  .atom .orbit.o1 { transform: rotateX(80deg) rotateY(0deg); }
  .atom .orbit.o2 { transform: rotateX(80deg) rotateY(60deg); }
  .atom .orbit.o3 { transform: rotateX(80deg) rotateY(-60deg); }
  .atom .electron {
    position: absolute; top: 50%; left: -8px;
    width: 16px; height: 16px; margin-top: -8px;
    border-radius: 50%;
    background: var(--cherenkov);
    box-shadow: 0 0 14px var(--cherenkov), 0 0 28px rgba(0,212,255,0.5);
  }
  .atom .orbit.o1 .electron { animation: ePath 2.4s linear infinite; }
  .atom .orbit.o2 .electron { animation: ePath 3.1s linear infinite reverse; }
  .atom .orbit.o3 .electron { animation: ePath 2.7s linear infinite; }
  @keyframes ePath {
    from { transform: rotate(0deg) translateX(140px) rotate(0deg); }
    to   { transform: rotate(360deg) translateX(140px) rotate(-360deg); }
  }
  /* secondary outer "shell" */
  .atom-shell {
    position: absolute; left: 50%; top: 50%;
    width: 320px; height: 320px; margin: -160px 0 0 -160px;
    border: 1px dashed rgba(0,212,255,0.18); border-radius: 50%;
    animation: shellSpin 40s linear infinite;
  }
  @keyframes shellSpin { to { transform: rotate(360deg); } }

  /* ===== Decay viz ===== */
  .decay-stage { display: flex; flex-direction: column; }
  .decay-particles {
    flex: 1; position: relative; padding: 20px;
    display:grid; grid-template-columns: repeat(10, 1fr); gap: 6px;
    align-content: start;
  }
  .decay-dot {
    aspect-ratio: 1/1; border-radius: 50%;
    background: var(--cherenkov);
    box-shadow: 0 0 6px var(--cherenkov);
    transition: background .6s var(--easing), box-shadow .6s var(--easing), transform .6s var(--easing);
  }
  .decay-dot.decayed {
    background: var(--amber);
    box-shadow: 0 0 6px rgba(255,181,71,.6);
    transform: scale(.7);
  }
  .decay-chart { height: 80px; padding: 0 16px 14px; }
  .decay-chart svg { width:100%; height:100%; display:block; }
  .decay-legend {
    display:flex; gap: 16px; padding: 0 20px 8px; font-size: 11px;
    color: var(--text-dim); letter-spacing: .05em;
    font-family: ui-monospace, "SF Mono", Consolas, monospace;
  }
  .decay-legend i {
    display:inline-block; width:8px; height:8px; border-radius:50%;
    margin-right: 6px; vertical-align: middle;
  }
  .decay-legend .i131 i { background: var(--cherenkov); box-shadow: 0 0 6px var(--cherenkov); }
  .decay-legend .xe131 i { background: var(--amber); }

  /* ===== Boot sequence overlay ===== */
  #boot {
    position: fixed; inset: 0; z-index: 9999;
    background: #000;
    display:flex; align-items:center; justify-content:center;
    flex-direction: column;
    font-family: ui-monospace, "SF Mono", Consolas, monospace;
    color: var(--cherenkov);
    transition: opacity .55s ease, visibility .55s ease;
  }
  #boot.done { opacity: 0; visibility: hidden; }
  #boot .boot-inner {
    text-align: left; min-width: 360px; max-width: 92vw;
    font-size: 12.5px; line-height: 1.9; letter-spacing: .03em;
  }
  #boot .boot-line { opacity: 0; }
  #boot .boot-line.ok::after { content: "  [ OK ]"; color: var(--cherenkov); }
  #boot .boot-bar {
    margin-top: 18px; height: 2px; background: rgba(0,212,255,.15); width: 100%; overflow:hidden;
  }
  #boot .boot-bar i {
    display:block; height: 100%; width: 0; background: var(--cherenkov);
    box-shadow: 0 0 10px var(--cherenkov);
  }
  #boot .boot-brand { color: #fff; font-size: 14px; margin-bottom: 14px; letter-spacing: .12em; }

  /* ===== Custom cursor ===== */
  body.custom-cursor { cursor: none; }
  body.custom-cursor input, body.custom-cursor textarea, body.custom-cursor select { cursor: text; }
  body.custom-cursor a, body.custom-cursor button { cursor: none; }
  #cur-dot, #cur-ring {
    position: fixed; top:0; left:0; pointer-events:none; z-index: 10000;
    mix-blend-mode: screen;
  }
  #cur-dot {
    width: 6px; height: 6px; margin: -3px 0 0 -3px;
    background: var(--cherenkov); border-radius: 50%;
    box-shadow: 0 0 8px var(--cherenkov), 0 0 16px rgba(0,212,255,0.5);
    transition: transform .12s var(--easing);
  }
  #cur-ring {
    width: 30px; height: 30px; margin: -15px 0 0 -15px;
    border: 1px solid rgba(0,212,255,.55); border-radius: 50%;
    transition: width .25s var(--easing), height .25s var(--easing), margin .25s var(--easing), border-color .25s, opacity .25s;
  }
  #cur-ring.hover {
    width: 48px; height: 48px; margin: -24px 0 0 -24px;
    border-color: var(--cherenkov);
  }
  @media (pointer: coarse) { #cur-dot, #cur-ring { display:none; } body.custom-cursor { cursor: auto; } }

  /* ===== Lock-on corners on section enter ===== */
  .lock-host { position: relative; }
  .lock-host .lock-corner {
    position: absolute; width: 28px; height: 28px;
    border: 1.5px solid var(--cherenkov); pointer-events:none;
    opacity: 0;
    box-shadow: 0 0 8px rgba(0,212,255,.6);
    transform: scale(2.2);
    transition: none;
  }
  .lock-host .lock-corner.tl { top: -2px; left: -2px; border-right:none; border-bottom:none; }
  .lock-host .lock-corner.tr { top: -2px; right: -2px; border-left:none; border-bottom:none; }
  .lock-host .lock-corner.bl { bottom: -2px; left: -2px; border-right:none; border-top:none; }
  .lock-host .lock-corner.br { bottom: -2px; right: -2px; border-left:none; border-top:none; }
  .lock-host.lock-go .lock-corner {
    animation: lockSnap 1.4s cubic-bezier(.2,1,.3,1) forwards;
  }
  @keyframes lockSnap {
    0% { opacity: 0; transform: scale(2.8); }
    20% { opacity: 1; }
    60% { transform: scale(1); opacity: 1; }
    100% { transform: scale(1); opacity: 0; }
  }

  /* ===== Cherenkov pool section ===== */
  .cherenkov {
    min-height: 100vh; min-height: 100dvh;
    display:flex; align-items:center; justify-content:center;
    position: relative; overflow: hidden;
    background: #00111c;
    padding: 0 32px;
  }
  .cherenkov-glow {
    position: absolute; inset: 0; z-index: 0; overflow: hidden;
  }
  .cherenkov-glow::before, .cherenkov-glow::after {
    content:""; position: absolute; border-radius: 50%;
    filter: blur(80px);
  }
  .cherenkov-glow::before {
    width: 80vw; height: 80vw; left: 10vw; top: -30vw;
    background: radial-gradient(circle, rgba(0,212,255,0.55) 0%, rgba(0,112,255,0.25) 40%, transparent 70%);
    animation: poolBreathe 7s ease-in-out infinite;
  }
  .cherenkov-glow::after {
    width: 60vw; height: 60vw; right: -10vw; bottom: -20vw;
    background: radial-gradient(circle, rgba(0,180,255,0.4) 0%, rgba(0,80,200,0.2) 50%, transparent 70%);
    animation: poolBreathe 9s ease-in-out infinite reverse;
  }
  @keyframes poolBreathe {
    0%, 100% { transform: scale(1) translateY(0); }
    50% { transform: scale(1.08) translateY(-20px); }
  }
  #cherenkov-canvas {
    position: absolute; inset: 0; z-index: 1; pointer-events:none;
    width:100%; height:100%; mix-blend-mode: screen;
  }
  .cherenkov-content {
    position: relative; z-index: 2; max-width: 880px; text-align: center;
    text-shadow: 0 0 24px rgba(0,180,255,.35);
  }
  .cherenkov-content .eyebrow { color: #b8eaff; }
  .cherenkov-content .eyebrow::before { background: #b8eaff; }
  .cherenkov-content h2 {
    color: #f0fbff; margin: 22px 0; font-weight: 700;
  }
  .cherenkov-content p {
    color: rgba(255,255,255,.8); font-size: clamp(15px, 1.4vw, 18px); line-height: 1.8;
    max-width: 62ch; margin: 0 auto;
  }
  .cherenkov-byline {
    margin-top: 36px; font-family: ui-monospace, monospace; font-size: 12.5px;
    color: rgba(255,255,255,.55); letter-spacing: .15em;
  }

  /* ===== Interactive Lab (cloud chamber + heatmap) ===== */
  .ilab {
    background: rgba(3,7,15,0.8);
    position: relative; overflow: hidden;
  }
  .ilab-stage {
    position: relative; height: 60vh; min-height: clamp(340px, 70vh, 480px);
    border-radius: 24px; overflow: hidden;
    background: radial-gradient(ellipse at center, rgba(0,80,180,.05), transparent 70%), #04081a;
    border: 1px solid var(--line);
    margin-top: 40px;
  }
  #cloud-canvas, #heat-canvas {
    position:absolute; inset:0; width:100%; height:100%; pointer-events:none;
  }
  #heat-canvas { mix-blend-mode: screen; }
  .ilab-hint {
    position: absolute; left: 50%; top: 50%; transform: translate(-50%,-50%);
    z-index: 3; pointer-events:none;
    text-align: center;
    transition: opacity .6s; opacity: 1;
  }
  .ilab-hint.fade { opacity: 0; }
  .ilab-hint .h {
    font-size: clamp(20px, 2.4vw, 32px); font-weight: 600; color: #fff; letter-spacing:-.01em;
  }
  .ilab-hint .s {
    margin-top: 10px; font-family: ui-monospace, monospace; font-size: 12px;
    color: var(--text-dim); letter-spacing: .12em;
  }
  .ilab-readout {
    position: absolute; top: 18px; left: 22px; z-index: 4;
    font-family: ui-monospace, monospace; font-size: 12px; color: var(--text-dim);
    letter-spacing: .08em;
  }
  .ilab-readout .v { color: var(--cherenkov); font-weight: 500; }
  .ilab-legend {
    position: absolute; bottom: 18px; right: 22px; z-index: 4;
    font-family: ui-monospace, monospace; font-size: 11px; color: var(--text-dim);
    display:flex; gap: 14px; letter-spacing: .04em;
  }
  .ilab-legend span::before {
    content:""; display:inline-block; width:10px; height:2px; margin-right:6px; vertical-align:middle;
  }
  .ilab-legend .a::before { background: #ff5a78; box-shadow: 0 0 6px #ff5a78; }
  .ilab-legend .b::before { background: var(--cherenkov); box-shadow: 0 0 6px var(--cherenkov); }
  .ilab-legend .g::before { background: var(--amber); box-shadow: 0 0 6px var(--amber); }

  /* ===== Gamma spectrum card ===== */
  .lab-card.wide { grid-column: 1 / -1; }
  .lab-card.wide .lab-stage { aspect-ratio: 16/5; }
  .spec-stage { position:relative; padding: 28px 30px 20px; display: flex; flex-direction: column; }
  .spec-stage svg { width: 100%; flex: 1; display:block; }
  .spec-info {
    position: absolute; top: 14px; right: 18px; font-family: ui-monospace, monospace;
    font-size: 11.5px; letter-spacing: .04em; color: var(--text-dim); text-align: right;
    line-height: 1.7;
  }
  .spec-info .iso { color: var(--cherenkov); font-weight: 500; font-size: 13px; }
  .spec-info .energy { color: #fff; font-size: 14px; }
  .spec-info .desc { color: var(--text-faint); font-size: 11px; max-width: 220px; }
  .spec-peaks { stroke: rgba(255,255,255,.06); }
  .spec-peak-label {
    fill: var(--text-faint); font-family: ui-monospace, monospace; font-size: 9.5px;
  }
  .spec-cursor { stroke: var(--amber); stroke-width: 1; stroke-dasharray: 2 3; }
  .spec-tip {
    fill: rgba(255,181,71,.95); font-family: ui-monospace, monospace; font-size: 10px;
  }

  /* ===== RAD MODE ===== */
  body.rad-mode {
    --cherenkov: #ff7a00;
    --cherenkov-deep: #cc2200;
    --line-hi: rgba(255,122,0,0.35);
  }
  body.rad-mode #cur-dot { background: #ff7a00; box-shadow: 0 0 10px #ff7a00, 0 0 24px rgba(255,80,0,.6); }
  body.rad-mode #cur-ring { border-color: rgba(255,122,0,.6); }
  body.rad-mode .nav { border-bottom-color: rgba(255,80,0,.2); background: rgba(20,5,0,.6); }
  body.rad-mode .hero { background-color: #100400 !important; }
  body.rad-mode .geiger .live-dot { background: #ff7a00; box-shadow: 0 0 8px #ff7a00; }
  body.rad-mode .audio-toggle.on::after { border-color: #ff7a00; }
  #rad-banner {
    position: fixed; top: 0; left: 0; right: 0; z-index: 9998;
    padding: 8px 16px; background: linear-gradient(90deg, rgba(255,40,0,.85), rgba(255,140,0,.85), rgba(255,40,0,.85));
    color: #fff; text-align: center; font-size: 12px; letter-spacing: .15em;
    font-family: ui-monospace, monospace; transform: translateY(-100%);
    transition: transform .4s var(--easing);
    background-size: 200% 100%;
    animation: radBannerSlide 3s linear infinite;
  }
  @keyframes radBannerSlide {
    0% { background-position: 0% 0%; }
    100% { background-position: 200% 0%; }
  }
  body.rad-mode #rad-banner { transform: translateY(0); }
  body.rad-mode .nav-inner { padding-top: 28px; }
  #rad-frame {
    position: fixed; inset: 0; z-index: 9997; pointer-events:none;
    border: 0 solid rgba(255,60,0,0);
    transition: border-width .25s, border-color .25s;
  }
  body.rad-mode #rad-frame {
    border-width: 4px;
    border-color: rgba(255,60,0,.6);
    animation: radFramePulse 1.5s ease-in-out infinite;
    box-shadow: inset 0 0 80px rgba(255,40,0,.25);
  }
  @keyframes radFramePulse {
    0%, 100% { border-color: rgba(255,60,0,.4); }
    50% { border-color: rgba(255,180,0,.9); }
  }

  /* ===== About Us ===== */
  .about { background: rgba(5,9,18,0.55); }
  .about-grid {
    display: grid; grid-template-columns: 1.05fr 1fr; gap: 56px;
    align-items: start;
  }
  @media (max-width: 980px) { .about-grid { grid-template-columns: 1fr; gap: 40px; } }
  .about-text p {
    color: var(--text-dim); font-size: 15.5px; line-height: 1.85; margin-bottom: 18px;
  }
  .about-text p strong { font-weight: 600; }
  .about-facts {
    margin-top: 32px;
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px;
    background: var(--line);
    border: 1px solid var(--line);
    border-radius: 14px; overflow: hidden;
  }
  @media (max-width: 640px) { .about-facts { grid-template-columns: repeat(2,1fr); } }
  .fact {
    background: var(--bg);
    padding: 18px 16px;
    display:flex; flex-direction:column; gap: 6px;
  }
  .fact-k { font-size: 11px; color: var(--text-faint); letter-spacing: .1em; text-transform: uppercase; }
  .fact-v { font-size: 15px; color: var(--text); font-weight: 500; }
  .about-photos {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    grid-template-rows: 1fr 1fr;
    gap: 10px;
    height: 100%;
    min-height: 480px;
  }
  .about-photos .photo {
    border-radius: 14px; overflow: hidden; position: relative;
    background: var(--surface); border: 1px solid var(--line);
  }
  .about-photos .photo img {
    width: 100%; height: 100%; object-fit: cover; display:block;
    transition: transform .8s var(--easing), filter .8s var(--easing);
    filter: saturate(.85) brightness(.95);
  }
  .about-photos .photo:hover img { transform: scale(1.05); filter: saturate(1) brightness(1); }
  .about-photos .photo.big { grid-row: 1 / 3; grid-column: 1; }
  .about-photos .photo.logo-tile {
    display:flex; align-items:center; justify-content:center;
    background: linear-gradient(135deg, rgba(0,212,255,0.06), rgba(0,80,200,0.02));
  }
  .about-photos .photo.logo-tile img { width: 70%; height: auto; object-fit: contain; filter: none; }
  @media (max-width: 640px) {
    .about-photos { grid-template-columns: 1fr 1fr; grid-template-rows: auto auto auto; min-height: auto; }
    .about-photos .photo.big { grid-row: 1; grid-column: 1 / -1; aspect-ratio: 4/3; }
    .about-photos .photo:not(.big) { aspect-ratio: 1/1; }
  }

  /* ===== Coverage section ===== */
  .coverage { background: rgba(5,9,18,0.55); }
  .coverage-grid {
    display: grid; grid-template-columns: 1.3fr 1fr; gap: 32px;
    align-items: stretch;
  }
  @media (max-width: 980px) { .coverage-grid { grid-template-columns: 1fr; } }
  .map-card {
    border-radius: 20px; padding: 24px;
    background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(0,0,0,0.1));
    border: 1px solid var(--line);
    position: relative; overflow: hidden;
    min-height: 480px;
  }
  .map-frame { position: relative; height: 100%; }
  #sd-map { width: 100%; height: auto; max-height: 480px; display:block; }
  .city-dot { fill: var(--cherenkov); filter: drop-shadow(0 0 4px var(--cherenkov)); cursor: pointer; }
  .city-dot.capital { fill: #fff; r: 1.2; filter: drop-shadow(0 0 6px var(--cherenkov)); }
  .city-label {
    font-family: -apple-system, "PingFang SC", system-ui, sans-serif;
    font-size: 2.2px; fill: rgba(255,255,255,0.75); text-anchor: middle;
    pointer-events: none;
  }
  .city-label.cap { fill: #fff; font-weight: 600; }
  .map-feed {
    position: absolute; right: 0; bottom: 0;
    width: 260px; max-width: 50%;
    background: rgba(5,9,18,0.7);
    border: 1px solid var(--line);
    border-radius: 12px;
    padding: 14px 16px;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
  }
  .feed-head {
    font-family: ui-monospace, monospace; font-size: 10.5px;
    color: var(--cherenkov); letter-spacing: .12em; margin-bottom: 10px;
  }
  .feed-list {
    font-family: ui-monospace, monospace; font-size: 11px;
    color: var(--text-dim); line-height: 1.6;
    min-height: 88px;
  }
  .feed-list .feed-item {
    opacity: 0; transform: translateX(8px); transition: opacity .5s, transform .5s;
    padding: 2px 0;
  }
  .feed-list .feed-item.in { opacity: 1; transform: none; }
  .feed-list .feed-item .city { color: #fff; }
  .feed-list .feed-item .t { color: var(--text-faint); margin-right: 6px; }
  @media (max-width: 640px) { .map-feed { position: static; width: auto; max-width: 100%; margin-top: 14px; } }

  .types-card {
    border-radius: 20px; padding: 28px;
    background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(0,0,0,0.1));
    border: 1px solid var(--line);
    display: flex; flex-direction: column;
  }
  .types-head {
    font-family: ui-monospace, monospace; font-size: 11.5px;
    color: var(--cherenkov); letter-spacing: .12em; margin-bottom: 20px;
  }
  .ctypes { display: grid; gap: 18px; flex: 1; }
  .ctype { display: flex; gap: 14px; align-items: flex-start; }
  .ctype-icon {
    flex-shrink: 0; width: 38px; height: 38px;
    display: grid; place-items: center;
    border-radius: 10px;
    background: rgba(0,212,255,0.08);
    border: 1px solid var(--line-hi);
    color: var(--cherenkov);
  }
  .ctype-title { font-size: 14.5px; font-weight: 500; color: var(--text); margin-bottom: 4px; }
  .ctype-meta { font-size: 12.5px; color: var(--text-dim); line-height: 1.55; }
  .types-foot {
    margin-top: 22px; padding-top: 18px; border-top: 1px solid var(--line);
    font-size: 13px; color: var(--text-dim); text-align: center;
    letter-spacing: .02em;
  }

  /* ===== Disclosure section ===== */
  .disclosure { background: rgba(5,9,18,0.5); }
  .disclosure-list { display: grid; gap: 24px; }
  .disc-item {
    background: linear-gradient(180deg, rgba(255,255,255,0.025), rgba(255,255,255,0.005));
    border: 1px solid var(--line); border-radius: 16px;
    padding: 32px 36px;
    position: relative; overflow: hidden;
    transition: border-color .3s, transform .3s;
  }
  .disc-item:hover { border-color: var(--line-hi); transform: translateY(-2px); }
  .disc-item::before {
    content:""; position:absolute; top:0; left:0; bottom:0; width: 3px;
    background: linear-gradient(180deg, var(--cherenkov), transparent);
  }
  .disc-head { margin-bottom: 24px; }
  .disc-meta {
    display: flex; align-items: center; gap: 14px;
    font-family: ui-monospace, monospace; font-size: 12px;
    margin-bottom: 14px;
  }
  .disc-tag {
    padding: 3px 10px; border-radius: 4px;
    background: rgba(0,212,255,0.10); color: var(--cherenkov);
    letter-spacing: .04em; font-weight: 500;
  }
  .disc-date { color: var(--text-faint); letter-spacing: .04em; }
  .disc-title {
    font-size: clamp(18px, 2vw, 22px); font-weight: 600;
    letter-spacing: -.01em; color: var(--text); line-height: 1.35;
    margin-bottom: 12px;
  }
  .disc-abstract { font-size: 14px; color: var(--text-dim); line-height: 1.7; max-width: 76ch; }
  .disc-grid {
    display: grid; grid-template-columns: repeat(2, 1fr);
    gap: 0;
    border: 1px solid var(--line); border-radius: 10px;
    overflow: hidden; background: var(--line);
    margin-top: 16px;
  }
  @media (max-width: 720px) { .disc-grid { grid-template-columns: 1fr; } }
  .disc-row {
    background: var(--bg);
    display: grid; grid-template-columns: 90px 1fr; gap: 14px;
    padding: 12px 16px;
    font-size: 13.5px;
    align-items: start;
  }
  .disc-k { color: var(--text-faint); font-size: 12px; letter-spacing: .05em; padding-top: 2px; }
  .disc-v { color: var(--text); line-height: 1.55; }
  .disc-v a { color: var(--cherenkov); }
  .disc-v a:hover { text-decoration: underline; }
  .disc-foot {
    margin-top: 22px; padding-top: 18px; border-top: 1px solid var(--line);
    display: flex; justify-content: space-between; align-items: center;
    font-size: 13px;
  }
  .disc-attach {
    display: inline-flex; align-items: center; gap: 8px;
    color: var(--text-dim);
  }
  .disc-attach svg { color: var(--text-faint); }
  .disc-link { color: var(--cherenkov); font-weight: 500; }
  .disc-link:hover { text-decoration: underline; }
  .disc-empty {
    border: 1px dashed var(--line); border-radius: 12px;
    padding: 22px 24px;
    display: flex; align-items: center; gap: 12px;
    color: var(--text-faint); font-size: 13.5px;
    background: rgba(255,255,255,0.01);
  }
  .disc-empty svg { color: var(--text-faint); }

  /* ===== Side text navigation ===== */
  .side-nav {
    position: fixed; right: 18px; top: 50%; transform: translateY(-50%);
    z-index: 90;
    display: flex; flex-direction: column;
    padding: 14px 16px 14px 12px;
    background: rgba(10,15,28,0.55);
    border: 1px solid var(--line);
    border-radius: 14px;
    backdrop-filter: blur(12px) saturate(1.4);
    -webkit-backdrop-filter: blur(12px) saturate(1.4);
  }
  .side-nav a {
    display: flex; align-items: center; gap: 10px;
    padding: 6px 4px;
    color: var(--text-dim);
    font-size: 12.5px;
    letter-spacing: .08em;
    transition: color .2s var(--easing);
    cursor: pointer;
    text-align: right;
  }
  .side-nav .side-bar {
    flex-shrink: 0;
    display: inline-block;
    width: 14px; height: 1.5px;
    background: rgba(255,255,255,0.18);
    border-radius: 1px;
    transition: all .3s var(--easing);
  }
  .side-nav .side-text {
    flex: 1; text-align: right;
  }
  .side-nav a:hover { color: var(--text); }
  .side-nav a:hover .side-bar {
    width: 22px;
    background: var(--cherenkov);
  }
  .side-nav a.active { color: var(--cherenkov); }
  .side-nav a.active .side-bar {
    width: 26px;
    background: var(--cherenkov);
    box-shadow: 0 0 6px var(--cherenkov);
  }
  body.rad-mode .side-nav a.active { color: #ff7a00; }
  body.rad-mode .side-nav a.active .side-bar { background: #ff7a00; box-shadow: 0 0 6px #ff7a00; }
  @media (max-width: 980px) { .side-nav { display: none; } }

  /* ===== News modal ===== */
  .news-modal {
    position: fixed; inset: 0; z-index: 200;
    visibility: hidden; opacity: 0;
    transition: opacity .35s var(--easing), visibility .35s var(--easing);
  }
  .news-modal.open { visibility: visible; opacity: 1; }
  .news-modal-backdrop {
    position: absolute; inset: 0;
    background: rgba(3,7,15,0.85);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
  }
  .news-modal-panel {
    position: absolute; left: 50%; top: 50%;
    transform: translate(-50%, -48%) scale(.96);
    width: min(900px, 92vw); max-height: 86vh;
    display: flex; flex-direction: column;
    background: linear-gradient(180deg, #0e1830 0%, #060c1d 100%);
    border: 1px solid var(--line-hi);
    border-radius: 18px;
    box-shadow: 0 30px 80px rgba(0,0,0,0.6), 0 0 60px rgba(0,212,255,0.15);
    overflow: hidden;
    transition: transform .4s var(--easing);
  }
  .news-modal.open .news-modal-panel { transform: translate(-50%, -50%) scale(1); }
  .news-modal-head {
    padding: 24px 28px;
    display: flex; align-items: center; justify-content: space-between;
    border-bottom: 1px solid var(--line);
  }
  .news-modal-eyebrow {
    font-family: ui-monospace, monospace; font-size: 11px;
    color: var(--cherenkov); letter-spacing: .15em;
    margin-bottom: 8px;
  }
  .news-modal-title {
    font-size: 22px; font-weight: 600; letter-spacing: -.01em; color: var(--text);
  }
  .news-modal-close {
    width: 36px; height: 36px; border-radius: 50%;
    background: rgba(255,255,255,0.05);
    border: 1px solid var(--line);
    color: var(--text-dim);
    cursor: pointer;
    display: grid; place-items: center;
    transition: all .2s;
  }
  .news-modal-close:hover { color: var(--cherenkov); border-color: var(--line-hi); background: rgba(0,212,255,0.08); }
  .news-modal-toolbar {
    padding: 16px 28px;
    display: flex; gap: 16px; align-items: center; justify-content: space-between;
    border-bottom: 1px solid var(--line);
  }
  .news-filter { display: flex; gap: 6px; flex-wrap: wrap; }
  .nf-tab {
    padding: 6px 12px; border-radius: 999px;
    background: transparent; border: 1px solid var(--line);
    color: var(--text-dim); font-size: 12.5px;
    cursor: pointer; transition: all .2s;
  }
  .nf-tab:hover { color: var(--text); border-color: var(--line-hi); }
  .nf-tab.on { color: var(--cherenkov); background: rgba(0,212,255,0.08); border-color: var(--line-hi); }
  .news-search {
    background: rgba(0,0,0,0.3); border: 1px solid var(--line);
    color: var(--text); padding: 7px 14px; border-radius: 999px;
    font-size: 12.5px; font-family: inherit; min-width: 160px;
    outline: none; transition: border-color .2s;
  }
  .news-search:focus { border-color: var(--line-hi); }
  .news-search::placeholder { color: var(--text-faint); }
  @media (max-width: 640px) {
    .news-modal-toolbar { flex-direction: column; align-items: stretch; }
    .news-search { width: 100%; }
  }
  .news-list {
    list-style: none; flex: 1; overflow-y: auto;
    padding: 8px 8px;
  }
  .news-list::-webkit-scrollbar { width: 10px; }
  .news-list::-webkit-scrollbar-track { background: transparent; }
  .news-list::-webkit-scrollbar-thumb { background: var(--line); border-radius: 5px; }
  .news-list::-webkit-scrollbar-thumb:hover { background: var(--line-hi); }
  .news-list li {
    padding: 16px 22px;
    border-bottom: 1px solid rgba(255,255,255,0.03);
    display: grid; grid-template-columns: 140px 1fr auto; gap: 16px;
    align-items: center;
    cursor: pointer;
    transition: all .2s var(--easing);
  }
  .news-list li:last-child { border-bottom: none; }
  .news-list li:hover { background: rgba(0,212,255,0.04); padding-left: 28px; }
  .nl-date { font-family: ui-monospace, monospace; font-size: 12px; color: var(--text-faint); }
  .nl-title { font-size: 14.5px; color: var(--text); line-height: 1.5; }
  .news-list li:hover .nl-title { color: var(--cherenkov); }
  .nl-tag {
    font-size: 11px; padding: 3px 9px; border-radius: 4px;
    letter-spacing: .04em;
    background: rgba(0,212,255,0.1); color: var(--cherenkov);
  }
  .nl-tag.动态 { background: rgba(255,181,71,0.1); color: var(--amber); }
  .nl-tag.荣誉 { background: rgba(180,120,255,0.12); color: #c79cff; }
  .nl-tag.业务 { background: rgba(120,220,160,0.12); color: #7adfa0; }
  .news-list li.hidden { display: none; }
  .news-list .empty {
    padding: 40px 22px; text-align: center; color: var(--text-faint); font-size: 13px;
  }
  @media (max-width: 640px) {
    .news-list li { grid-template-columns: 1fr; }
    .nl-date { order: -1; }
  }
  .news-modal-foot {
    padding: 14px 28px;
    display: flex; justify-content: space-between;
    font-family: ui-monospace, monospace; font-size: 11px;
    color: var(--text-faint);
    border-top: 1px solid var(--line);
  }

  /* ===== Generative logo electrons ===== */
  .brand-mark .e {
    position: absolute; left: 50%; top: 50%;
    width: 4px; height: 4px; margin: -2px 0 0 -2px;
    background: var(--cherenkov); border-radius: 50%;
    box-shadow: 0 0 4px var(--cherenkov);
  }
  .brand-mark .e1 { animation: bme1 2s linear infinite; }
  .brand-mark .e2 { animation: bme2 2.6s linear infinite; }
  @keyframes bme1 {
    from { transform: rotate(0deg) translateX(14px) rotate(0deg); }
    to   { transform: rotate(360deg) translateX(14px) rotate(-360deg); }
  }
  @keyframes bme2 {
    from { transform: rotate(0deg) translateX(8px) rotate(0deg); }
    to   { transform: rotate(-360deg) translateX(8px) rotate(360deg); }
  }

  /* ===== Hero ===== */
  .hero {
    position: relative; min-height: 100vh; min-height: 100dvh;
    display: flex; align-items: center; justify-content: center;
    overflow: hidden;
    background:
      radial-gradient(ellipse at 50% 100%, rgba(0,112,255,0.18), transparent 60%),
      radial-gradient(ellipse at 50% 0%, rgba(0,212,255,0.10), transparent 50%),
      var(--bg-deep);
  }
  #radiation-canvas {
    position: absolute; inset: 0; width: 100%; height: 100%;
    z-index: 0; opacity: .9;
  }
  .hero-grid {
    position: absolute; inset: 0; z-index: 1; pointer-events:none;
    background-image:
      linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px),
      linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
  }
  .hero-content {
    position: relative; z-index: 2; text-align: center; padding: 120px 32px 80px;
    max-width: 1100px;
  }
  .hero h1 { margin-top: 28px; }
  .hero h1 .accent {
    background: linear-gradient(135deg, #fff 0%, var(--cherenkov) 60%, var(--cherenkov-deep) 100%);
    -webkit-background-clip: text; background-clip: text; color: transparent;
    -webkit-text-fill-color: transparent;
  }
  .hero p.lead { margin: 28px auto 0; }
  .hero-cta { display:flex; gap:14px; justify-content:center; margin-top: 44px; flex-wrap:wrap; }
  .btn {
    display: inline-flex; align-items:center; gap:8px;
    padding: 14px 28px; border-radius: 999px; font-size: 15px; font-weight: 500;
    transition: all .25s var(--easing); cursor: pointer; border: none;
  }
  .btn-primary {
    background: var(--cherenkov); color: #001020;
    box-shadow: 0 0 0 0 rgba(0,212,255,.5), 0 10px 40px -10px rgba(0,212,255,.7);
  }
  .btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 0 0 6px rgba(0,212,255,.15), 0 15px 50px -10px rgba(0,212,255,.9);
  }
  .btn-ghost {
    background: rgba(255,255,255,.06); color: var(--text);
    border: 1px solid rgba(255,255,255,.12);
  }
  .btn-ghost:hover { background: rgba(255,255,255,.1); border-color: rgba(255,255,255,.25); }
  .btn .arrow { transition: transform .25s var(--easing); }
  .btn:hover .arrow { transform: translateX(3px); }

  /* Hero scroll indicator */
  .scroll-cue {
    position: absolute; bottom: 32px; left: 50%; transform: translateX(-50%);
    z-index: 2; color: var(--text-faint); font-size: 12px; letter-spacing: .2em;
    display:flex; flex-direction:column; align-items:center; gap:10px;
    animation: bob 2.4s ease-in-out infinite;
  }
  @keyframes bob { 0%,100% { transform: translate(-50%, 0); } 50% { transform: translate(-50%, 6px); } }
  .scroll-cue .line {
    width: 1px; height: 36px;
    background: linear-gradient(to bottom, transparent, var(--cherenkov));
  }

  /* ===== Section base ===== */
  section { padding: 140px 0; position: relative; }
  @media (max-width:720px) { section { padding: 100px 0; } }
  .section-head { max-width: 760px; margin-bottom: 72px; }
  .section-head .eyebrow { margin-bottom: 20px; }
  .section-head h2 { margin-bottom: 22px; }

  /* ===== Stats band ===== */
  .stats {
    background: linear-gradient(180deg, var(--bg) 0%, var(--bg-deep) 100%);
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    padding: 80px 0;
  }
  .stats-grid {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 0;
  }
  .stat { padding: 24px 32px; border-left: 1px solid var(--line); }
  .stat:first-child { border-left: none; }
  .stat-num {
    font-size: clamp(40px, 5vw, 64px); font-weight: 700; letter-spacing: -0.03em;
    background: linear-gradient(135deg, var(--text) 0%, var(--cherenkov) 90%);
    -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
    line-height: 1; font-variant-numeric: tabular-nums;
  }
  .stat-num .unit { font-size: 0.5em; color: var(--text-dim); -webkit-text-fill-color: var(--text-dim); margin-left: 6px; font-weight: 500; }
  .stat-label { color: var(--text-dim); font-size: 14px; margin-top: 14px; letter-spacing: .05em; }
  @media (max-width: 880px) {
    .stats-grid { grid-template-columns: repeat(2,1fr); }
    .stat { border-left: none; border-top: 1px solid var(--line); padding: 32px 20px; }
    .stat:nth-child(-n+2) { border-top:none; }
    .stat:nth-child(odd) { border-right: 1px solid var(--line); }
  }

  /* ===== Services ===== */
  .services-grid {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px;
  }
  @media (max-width:980px) { .services-grid { grid-template-columns: repeat(2,1fr); } }
  @media (max-width:640px) { .services-grid { grid-template-columns: 1fr; } }
  .service {
    position: relative; padding: 36px 32px 32px; border-radius: var(--radius);
    background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.005));
    border: 1px solid var(--line); overflow: hidden;
    transition: all .4s var(--easing);
  }
  .service::before {
    content:""; position:absolute; inset:-1px; border-radius: inherit; padding:1px;
    background: linear-gradient(135deg, var(--cherenkov), transparent 50%);
    -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
    -webkit-mask-composite: xor; mask-composite: exclude;
    opacity: 0; transition: opacity .4s var(--easing);
  }
  .service:hover { transform: translateY(-3px); background: linear-gradient(180deg, rgba(0,212,255,0.04), rgba(255,255,255,0.005)); }
  .service:hover::before { opacity: 1; }
  /* Card cursor spotlight */
  .service .spot {
    position:absolute; inset:0; pointer-events:none; opacity:0;
    background: radial-gradient(280px circle at var(--mx,50%) var(--my,50%), rgba(0,212,255,0.18), transparent 60%);
    transition: opacity .3s var(--easing); border-radius: inherit;
  }
  .service:hover .spot { opacity: 1; }
  .service .icon {
    width: 48px; height: 48px; margin-bottom: 22px; display:grid; place-items:center;
    color: var(--cherenkov);
  }
  .service h3 { font-size: 19px; font-weight: 600; margin-bottom: 12px; letter-spacing: -0.01em; }
  .service p { color: var(--text-dim); font-size: 14.5px; line-height: 1.65; }
  .service .tag {
    display:inline-block; margin-top: 18px; padding: 4px 10px; font-size: 12px;
    background: rgba(0,212,255,.1); color: var(--cherenkov); border-radius: 4px;
    letter-spacing: .05em;
  }

  /* ===== Pillars (Apple-style scroll) ===== */
  .pillars { background: linear-gradient(180deg, var(--bg) 0%, #060a14 50%, var(--bg) 100%); }
  .pillar {
    display:grid; grid-template-columns: 1.1fr 1fr; gap: 80px; align-items:center;
    padding: 80px 0; border-top: 1px solid var(--line);
  }
  .pillar:first-of-type { border-top: none; }
  .pillar:nth-child(even) .pillar-visual { order: -1; }
  .pillar h3 { margin: 18px 0 22px; }
  .pillar .lead { margin-bottom: 28px; }
  .pillar-features { display:grid; gap: 14px; }
  .pillar-feature {
    display:flex; align-items:flex-start; gap: 14px; font-size: 14.5px; color: var(--text-dim);
  }
  .pillar-feature::before {
    content: ""; flex-shrink:0; width: 6px; height:6px; border-radius:50%;
    background: var(--cherenkov); margin-top: 8px;
    box-shadow: 0 0 10px var(--cherenkov);
  }
  .pillar-visual {
    aspect-ratio: 1/1; border-radius: 24px; position: relative; overflow: hidden;
    background: radial-gradient(circle at 50% 50%, rgba(0,212,255,.15), transparent 70%), #0a1426;
    border: 1px solid var(--line);
  }
  @media (max-width: 900px) {
    .pillar { grid-template-columns: 1fr; gap: 40px; padding: 60px 0; }
    .pillar:nth-child(even) .pillar-visual { order: 0; }
  }

  /* SVG-based visualizations inside pillars */
  .viz { width:100%; height:100%; display:block; }

  /* ===== Certificates ===== */
  .certs {
    background:
      radial-gradient(ellipse at 80% 50%, rgba(0,112,255,.08), transparent 60%),
      var(--bg-deep);
  }
  .cert-grid {
    display:grid; grid-template-columns: repeat(5, 1fr); gap: 16px;
  }
  @media (max-width:1100px) { .cert-grid { grid-template-columns: repeat(3,1fr); } }
  @media (max-width:700px) { .cert-grid { grid-template-columns: repeat(2,1fr); } }
  .cert {
    aspect-ratio: 3/4; border-radius: 12px;
    background: linear-gradient(180deg, var(--surface) 0%, var(--bg) 100%);
    border: 1px solid var(--line);
    display:flex; flex-direction:column; padding: 24px; justify-content:space-between;
    position: relative; overflow: hidden;
    transition: all .3s var(--easing);
  }
  .cert:hover { transform: translateY(-2px); border-color: var(--line-hi); }
  .cert::after {
    content:""; position:absolute; top:0; right:0; width: 50%; height: 100%;
    background: radial-gradient(circle at 100% 0%, rgba(0,212,255,.1), transparent 60%);
    pointer-events:none;
  }
  .cert-no { font-size:12px; color: var(--text-faint); letter-spacing: .15em; }
  .cert-name { font-size: 18px; font-weight: 600; letter-spacing: -.01em; }
  .cert-meta { font-size: 12.5px; color: var(--text-dim); line-height:1.6; }

  /* ===== News & Careers split ===== */
  .split { display:grid; grid-template-columns: 1fr 1fr; gap: 40px; }
  @media (max-width: 900px) { .split { grid-template-columns: 1fr; } }
  .news-item, .job-item {
    padding: 24px 0; border-bottom: 1px solid var(--line);
    display:flex; justify-content:space-between; align-items:center; gap: 24px;
    transition: padding .2s var(--easing);
    cursor: pointer;
  }
  .news-item:hover, .job-item:hover { padding-left: 8px; }
  .news-item:last-child, .job-item:last-child { border-bottom:none; }
  .news-meta { font-size: 12px; color: var(--text-faint); letter-spacing: .1em; margin-bottom: 8px; }
  .news-title, .job-title { font-size: 16.5px; font-weight: 500; }
  .news-item:hover .news-title, .job-item:hover .job-title { color: var(--cherenkov); }
  .job-tag { font-size: 12px; color: var(--cherenkov); background: rgba(0,212,255,.1); padding: 3px 10px; border-radius:4px; }
  .col-head { display:flex; align-items: baseline; justify-content: space-between; margin-bottom: 28px; }
  .col-head h3 { font-size: 22px; font-weight: 600; letter-spacing: -.01em; }
  .col-head a { font-size: 13px; color: var(--text-dim); }
  .col-head a:hover { color: var(--cherenkov); }

  /* ===== CTA band ===== */
  .cta-band {
    text-align:center; padding: 140px 0;
    background:
      radial-gradient(ellipse at center, rgba(0,212,255,.12), transparent 60%),
      var(--bg-deep);
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
  }
  .cta-band h2 { margin-bottom: 24px; }
  .cta-band .lead { margin: 0 auto 40px; }

  /* ===== Footer ===== */
  footer {
    padding: 80px 0 40px; background: var(--bg-deep);
    color: var(--text-dim); font-size: 13.5px;
  }
  .foot-grid { display:grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 60px; }
  @media (max-width: 900px) { .foot-grid { grid-template-columns: 1fr 1fr; gap: 32px; } }
  .foot h4 { color: var(--text); font-size: 13px; font-weight: 600; letter-spacing: .1em; text-transform: uppercase; margin-bottom: 18px; }
  .foot-logo {
    display: inline-flex; align-items: center; justify-content: center;
    width: 42px; height: 42px;
    border-radius: 50%; overflow: hidden;
    background: #fff;
    border: 1px solid rgba(0,212,255,.35);
    box-shadow: 0 0 14px rgba(0,212,255,.22);
    flex-shrink: 0;
  }
  .foot-logo img {
    width: 100%; height: 100%;
    object-fit: cover; object-position: center;
    display: block;
  }
  .foot ul { list-style: none; display:grid; gap: 10px; }
  .foot a:hover { color: var(--cherenkov); }
  .foot .contact-line { margin-bottom: 10px; }
  .copy {
    padding-top: 28px; border-top: 1px solid var(--line);
    display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:12px;
    font-size: 12.5px; color: var(--text-faint);
  }

  /* ===== Reveal animations ===== */
  .reveal { opacity: 0; transform: translateY(24px); transition: opacity .9s var(--easing), transform .9s var(--easing); }
  .reveal.in { opacity: 1; transform: none; }
  .reveal.d1 { transition-delay: .08s; }
  .reveal.d2 { transition-delay: .16s; }
  .reveal.d3 { transition-delay: .24s; }
  .reveal.d4 { transition-delay: .32s; }
  @media (prefers-reduced-motion: reduce) {
    .reveal { transition: none !important; opacity: 1; transform: none; }
  }
  /* ===== Sub-footer (non-home pages) ===== */
  .sub-footer {
    margin-top: 80px;
    padding: 40px 0 32px;
    border-top: 1px solid var(--line);
    background: rgba(0,0,0,.2);
    position: relative; z-index: 2;
  }
  .sub-foot-grid {
    display: flex; flex-wrap: wrap; justify-content: space-between;
    gap: 24px; font-size: 12.5px; color: var(--text-faint); line-height: 1.9;
  }
  .sub-foot-brand { color: var(--text-dim); font-size: 13.5px; margin-bottom: 8px; letter-spacing: .02em; }
  .sub-foot-meta a { color: inherit; }
  .sub-foot-meta a:hover { color: var(--cherenkov); }
  .sub-foot-meta .sep { margin: 0 8px; opacity: .5; }
  .sub-foot-legal { text-align: right; font-family: ui-monospace, "SF Mono", Consolas, monospace; font-size: 11.5px; letter-spacing: .04em; }
  .sub-foot-legal a { color: inherit; }
  .sub-foot-legal a:hover { color: var(--cherenkov); }
  @media (max-width: 720px) {
    .sub-foot-legal { text-align: left; }
  }

  /* ===== Homepage notices banner ===== */
  .notices-banner {
    margin-bottom: 56px;
    padding: 28px 28px 20px;
    border: 1px solid var(--line);
    border-radius: 14px;
    background: linear-gradient(135deg, rgba(255,181,71,.04), rgba(0,212,255,.02));
    position: relative;
  }
  .notices-banner::before {
    content: ""; position: absolute; left: 28px; top: 0;
    width: 36px; height: 2px; background: var(--amber, #ffb547);
    box-shadow: 0 0 8px var(--amber, #ffb547);
  }
  .notices-banner-head {
    display: flex; justify-content: space-between; align-items: flex-end;
    gap: 16px; flex-wrap: wrap; margin-bottom: 22px; padding-top: 4px;
  }
  .notices-banner-title { margin: 8px 0 0; font-size: 20px; font-weight: 600; color: var(--text); letter-spacing: -.01em; }
  .notices-banner-cta { font-size: 13px; color: var(--cherenkov); white-space: nowrap; }
  .notices-banner-list { list-style: none; padding: 0; margin: 0; }
  .notices-banner-list li + li { border-top: 1px solid var(--line); }
  .notices-banner-list a {
    display: grid;
    grid-template-columns: 100px 1fr auto;
    gap: 16px; align-items: center;
    padding: 12px 0;
    color: inherit; text-decoration: none;
    transition: padding .2s, background .2s;
  }
  .notices-banner-list a:hover { padding-left: 8px; background: rgba(0,212,255,.03); }
  .notices-banner-list .nb-date {
    font-family: ui-monospace, monospace; font-size: 11.5px; color: var(--text-faint); letter-spacing: .04em;
  }
  .notices-banner-list .nb-title { font-size: 14px; color: var(--text); line-height: 1.45; }
  .notices-banner-list .nb-unit { font-size: 11.5px; color: var(--text-faint); }
  @media (max-width: 720px) {
    .notices-banner { padding: 22px 18px 14px; }
    .notices-banner-list a {
      grid-template-columns: 1fr;
      gap: 4px;
      padding: 14px 0;
    }
    .notices-banner-list .nb-date { order: 2; font-size: 11px; }
    .notices-banner-list .nb-unit { font-size: 11px; }
    .notices-banner-list a:hover { padding-left: 0; }
  }