:root {
  --bg: #030810;
  --bg-deep: #01050a;
  --surface: rgba(13, 28, 43, 0.5);
  --surface-strong: rgba(15, 31, 48, 0.72);
  --line: rgba(163, 198, 224, 0.18);
  --line-strong: rgba(179, 211, 234, 0.35);
  --text: #f3f7f9;
  --muted: #8b9ba8;
  --muted-2: #637482;
  --blue: #8bc9f2;
  --orange: #ff6b18;
  --orange-soft: #ff8a45;
  --max: 1440px;
  --pad: clamp(24px, 5vw, 80px);
  --radius: 24px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; background: var(--bg); }
body {
  margin: 0;
  min-width: 320px;
  color: var(--text);
  background:
    radial-gradient(circle at 78% 10%, rgba(37, 91, 130, 0.16), transparent 32%),
    linear-gradient(180deg, #02070d 0%, #06111d 46%, #02070c 100%);
  font-family: "SF Pro Display", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
button { color: inherit; font: inherit; }
svg { width: 1em; height: 1em; fill: none; stroke: currentColor; stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; }

.page-noise {
  position: fixed;
  inset: 0;
  z-index: 100;
  opacity: 0.035;
  pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 140 140' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.8'/%3E%3C/svg%3E");
}

.glass {
  background: linear-gradient(145deg, rgba(21, 42, 61, 0.7), rgba(6, 17, 28, 0.48));
  border: 1px solid var(--line);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.06), 0 24px 80px rgba(0,0,0,.24);
  backdrop-filter: blur(22px) saturate(130%);
  -webkit-backdrop-filter: blur(22px) saturate(130%);
}

.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 50;
  height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--pad);
  border-bottom: 1px solid transparent;
  transition: .45s var(--ease);
}
.site-header.scrolled {
  background: rgba(2, 8, 14, .72);
  border-color: var(--line);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}
.brand { display: inline-flex; align-items: center; gap: 9px; font-size: 16px; letter-spacing: .08em; white-space: nowrap; }
.brand span { font-weight: 650; }
.brand i { display: block; width: 1px; height: 15px; background: rgba(255,255,255,.3); }
.brand strong { color: var(--orange); font-size: 17px; letter-spacing: .02em; }
.main-nav { display: flex; align-items: stretch; gap: clamp(20px, 2.8vw, 42px); height: 100%; }
.main-nav a { position: relative; display: grid; place-items: center; color: #b5c0c8; font-size: 14px; transition: color .25s; }
.main-nav a::after { content: ""; position: absolute; left: 50%; right: 50%; bottom: 0; height: 2px; background: var(--orange); transition: .3s var(--ease); }
.main-nav a:hover, .main-nav a.active { color: #fff; }
.main-nav a:hover::after, .main-nav a.active::after { left: 0; right: 0; }
.menu-button { display: none; width: 42px; height: 42px; border: 0; background: none; padding: 10px; }
.menu-button span { display: block; width: 100%; height: 1px; background: #fff; margin: 7px 0; transition: .3s; }

.hero {
  position: relative;
  min-height: 900px;
  height: 100svh;
  max-height: 1080px;
  display: flex;
  align-items: center;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}
.hero::after { content: ""; position: absolute; inset: auto 0 0; height: 28%; background: linear-gradient(0deg, var(--bg) 0%, transparent 100%); pointer-events: none; }
.hero-media { position: absolute; inset: 0 0 0 30%; }
.hero-media video { width: 100%; height: 100%; object-fit: cover; object-position: center; filter: brightness(.62) saturate(.82) contrast(1.12); mask-image: linear-gradient(90deg, transparent 0%, #000 28%, #000 100%); -webkit-mask-image: linear-gradient(90deg, transparent 0%, #000 28%, #000 100%); }
.hero-media::after { content: ""; position: absolute; inset: 0; background: radial-gradient(circle at 70% 48%, transparent 0%, rgba(0,5,10,.08) 55%, rgba(0,5,10,.48) 100%); pointer-events: none; }
.signal-ribbon { position: absolute; inset: 8% 1% 3% auto; width: 62%; height: 82%; z-index: 2; overflow: visible; }
.signal-ribbon .signal-glow { stroke: rgba(99, 188, 255, .2); stroke-width: 25; filter: blur(11px); }
.signal-ribbon .signal-line { stroke: url(#none); stroke: rgba(151, 211, 255, .74); stroke-width: 2; stroke-dasharray: 8 11; animation: signal 18s linear infinite; }
.signal-ribbon circle { fill: var(--orange); stroke: rgba(255,255,255,.7); stroke-width: 2; filter: drop-shadow(0 0 12px var(--orange)); }
@keyframes signal { to { stroke-dashoffset: -380; } }

.hero-content { position: relative; z-index: 4; width: min(610px, 46vw); margin-left: var(--pad); padding-top: 40px; }
.hero h1 { margin: 0 0 24px; font-size: clamp(64px, 7vw, 116px); font-weight: 420; letter-spacing: -.06em; line-height: .88; }
.hero h1 span { color: var(--orange); margin-right: .12em; font-weight: 320; }
.hero-statement { margin: 0 0 24px; font-size: clamp(32px, 3.25vw, 58px); font-weight: 560; letter-spacing: -.035em; line-height: 1.16; }
.hero-copy { max-width: 580px; margin: 0; color: #aab6be; font-size: clamp(16px, 1.35vw, 20px); line-height: 1.9; }
.hero-actions { display: flex; gap: 16px; margin-top: 40px; }
.button { min-height: 56px; display: inline-flex; align-items: center; justify-content: center; gap: 28px; padding: 0 28px; border: 1px solid var(--line-strong); border-radius: 4px; font-size: 15px; transition: .35s var(--ease); }
.button svg { font-size: 20px; transition: transform .3s; }
.button:hover svg { transform: translateX(5px); }
.button-primary { background: var(--orange); border-color: var(--orange); box-shadow: 0 12px 40px rgba(255, 88, 9, .24); }
.button-primary:hover { background: var(--orange-soft); transform: translateY(-2px); }
.button-secondary { background: rgba(5,13,22,.26); }
.button-secondary:hover { border-color: rgba(255,255,255,.55); background: rgba(255,255,255,.05); }
.hero-status { position: absolute; z-index: 5; right: var(--pad); bottom: 9%; display: flex; gap: 20px; padding: 16px 20px; border-radius: 14px; }
.hero-status span { display: flex; align-items: center; gap: 9px; color: #c1cdd5; font-size: 12px; }
.hero-status i { width: 5px; height: 5px; border-radius: 50%; background: #77d6ff; box-shadow: 0 0 10px #77d6ff; }
.scroll-cue { position: absolute; z-index: 6; left: 50%; bottom: 24px; width: 30px; height: 44px; display: grid; place-items: center; }
.scroll-cue span { width: 1px; height: 24px; background: linear-gradient(#fff, transparent); animation: scroll 1.8s ease-in-out infinite; }
@keyframes scroll { 0%,100% { transform: translateY(-5px); opacity: .25; } 50% { transform: translateY(6px); opacity: 1; } }

.section-shell { width: min(100%, calc(var(--max) + var(--pad) * 2)); margin: 0 auto; padding: 150px var(--pad); }
.intro { position: relative; display: grid; grid-template-columns: .9fr 1.4fr; gap: clamp(60px, 8vw, 140px); }
.intro::before { content: ""; position: absolute; top: 0; left: 42%; width: 1px; height: 150px; background: linear-gradient(var(--orange), transparent); }
.intro-heading h2, .section-heading h2, .closing h2 { margin: 0; font-size: clamp(42px, 5vw, 78px); line-height: 1.08; letter-spacing: -.045em; font-weight: 520; }
.intro-heading p { margin: 38px 0 0; max-width: 560px; color: var(--muted); line-height: 1.85; font-size: 17px; }
.intro-principles { border-top: 1px solid var(--line); }
.intro-principles article { display: grid; grid-template-columns: 80px 170px 1fr; align-items: start; gap: 20px; padding: 34px 0; border-bottom: 1px solid var(--line); }
.intro-principles article > span { color: var(--orange); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 13px; }
.intro-principles h3 { margin: -4px 0 0; font-size: 26px; font-weight: 540; }
.intro-principles p { margin: 0; color: var(--muted); line-height: 1.75; }

.capabilities { position: relative; }
.capabilities::before, .scenes::before { content: ""; position: absolute; left: 0; right: 0; top: 0; height: 1px; background: linear-gradient(90deg, transparent, var(--line-strong), transparent); }
.section-heading { display: flex; align-items: flex-end; justify-content: space-between; gap: 40px; margin-bottom: 78px; }
.section-heading p { margin: 22px 0 0; color: var(--muted); font-size: 18px; }
.section-index { color: var(--muted-2); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 12px; letter-spacing: .08em; }
.capability-layout { display: grid; grid-template-columns: minmax(320px, .75fr) minmax(620px, 1.55fr); gap: clamp(36px, 5vw, 80px); align-items: stretch; }
.capability-rail { border-top: 1px solid var(--line); }
.capability-tab { width: 100%; min-height: 94px; display: grid; grid-template-columns: 54px 1fr; align-items: center; gap: 8px; position: relative; padding: 18px 8px; border: 0; border-bottom: 1px solid var(--line); background: none; text-align: left; cursor: pointer; transition: .35s var(--ease); }
.capability-tab::before { content: ""; position: absolute; left: 0; top: 50%; width: 2px; height: 0; background: var(--orange); transition: .35s var(--ease); transform: translateY(-50%); }
.capability-tab > span { color: var(--muted-2); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 14px; transition: .3s; }
.capability-tab strong { display: block; font-size: 18px; font-weight: 520; color: #b4c0c8; transition: .3s; }
.capability-tab small { display: block; margin-top: 8px; color: var(--muted-2); font-size: 13px; }
.capability-tab:hover, .capability-tab.active { padding-left: 18px; }
.capability-tab.active::before { height: 54%; }
.capability-tab.active > span { color: var(--orange); }
.capability-tab.active strong { color: #fff; }
.capability-stage { position: relative; min-height: 670px; overflow: hidden; border-radius: var(--radius); }
.stage-topbar { height: 68px; display: flex; align-items: center; justify-content: space-between; padding: 0 24px; border-bottom: 1px solid var(--line); font-size: 12px; color: #c8d5dd; }
.stage-topbar b { color: var(--orange); }
.stage-topbar > div { display: flex; gap: 8px; }
.stage-topbar i { display: block; width: 7px; height: 7px; border: 1px solid var(--line-strong); border-radius: 50%; }
.campus-map { position: absolute; inset: 68px 0 130px; display: flex; align-items: center; justify-content: center; padding: 24px 28px; overflow: hidden; background: radial-gradient(circle at 50% 40%, rgba(20,96,121,.14), transparent 72%); }
.campus-dashboard-image { display: block; width: 100%; height: 100%; object-fit: contain; object-position: center; border: 1px solid rgba(116,205,229,.18); border-radius: 10px; box-shadow: 0 24px 64px rgba(0,0,0,.3), 0 0 34px rgba(27,154,187,.08); transition: opacity .32s var(--ease), transform .5s var(--ease); }
.campus-dashboard-image.is-switching { opacity: .08; transform: scale(.985); }
.map-grid { position: absolute; inset: -20%; background-image: linear-gradient(rgba(111,182,231,.08) 1px, transparent 1px), linear-gradient(90deg, rgba(111,182,231,.08) 1px, transparent 1px); background-size: 42px 42px; transform: rotateX(64deg) rotateZ(-13deg) translateY(-6%); mask-image: radial-gradient(circle, #000 20%, transparent 72%); }
.building { position: absolute; width: 17%; height: 18%; border: 1px solid rgba(122,195,243,.42); background: linear-gradient(135deg, rgba(112,187,236,.18), rgba(5,19,31,.22)); box-shadow: inset 0 0 30px rgba(90,178,238,.08), 0 0 30px rgba(45,136,198,.07); transform: skewY(-8deg); }
.b1 { left: 10%; top: 48%; } .b2 { left: 28%; top: 27%; width: 20%; height: 24%; } .b3 { left: 52%; top: 41%; }
.b4 { left: 69%; top: 20%; width: 21%; height: 27%; } .b5 { left: 41%; top: 64%; width: 16%; } .b6 { left: 76%; top: 62%; width: 14%; }
.campus-map svg { position: absolute; inset: 2% 0 0; width: 100%; height: 100%; z-index: 2; }
.campus-map svg path { stroke: rgba(100,190,250,.55); stroke-width: 1.4; stroke-dasharray: 6 8; }
.campus-map svg circle { fill: var(--orange); stroke: rgba(255,255,255,.75); filter: drop-shadow(0 0 10px var(--orange)); }
.stage-detail { position: absolute; z-index: 4; left: 0; right: 0; bottom: 0; min-height: 132px; display: grid; grid-template-columns: 88px 1fr; gap: 14px; align-items: center; padding: 24px 30px; border-top: 1px solid var(--line); background: rgba(4,14,23,.7); backdrop-filter: blur(16px); }
.stage-detail > span { color: var(--orange); font-size: 40px; font-weight: 300; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }
.stage-detail h3 { margin: 0 0 8px; font-size: 24px; }
.stage-detail p { margin: 0; color: var(--muted); line-height: 1.65; }
.stage-detail.is-switching { animation: detail-switch .45s var(--ease); }
@keyframes detail-switch { 0% { opacity: .35; transform: translateY(8px); } 100% { opacity: 1; transform: translateY(0); } }
.logistics-line { display: grid; grid-template-columns: .75fr 1.4fr; gap: 80px; align-items: center; margin-top: 84px; padding: 36px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.logistics-line span { font-size: clamp(25px, 3vw, 40px); }
.logistics-line p { margin: 0; color: var(--muted); line-height: 1.8; }

.scenes { position: relative; }
.scene-layout { display: grid; grid-template-columns: minmax(280px, .55fr) minmax(650px, 1.55fr); gap: 28px; }
.scene-nav { padding: 14px 0; border-radius: var(--radius); align-self: stretch; }
.scene-tab { width: calc(100% - 28px); min-height: 82px; margin: 0 14px; display: grid; grid-template-columns: 48px 1fr; align-items: center; position: relative; border: 0; border-bottom: 1px solid var(--line); background: none; color: var(--muted); text-align: left; cursor: pointer; transition: .35s var(--ease); }
.scene-tab:last-child { border-bottom: 0; }
.scene-tab::before { content: ""; position: absolute; left: -14px; top: 50%; width: 2px; height: 0; background: var(--orange); transform: translateY(-50%); transition: .3s; }
.scene-tab span { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; color: var(--muted-2); font-size: 14px; }
.scene-tab:hover, .scene-tab.active { color: #fff; transform: translateX(8px); }
.scene-tab.active::before { height: 58%; }
.scene-tab.active span { color: var(--orange); }
.scene-stage { position: relative; min-height: 660px; border-radius: var(--radius); overflow: hidden; background: #08121c; border: 1px solid var(--line); }
.scene-stage > img { width: 100%; height: 100%; position: absolute; inset: 0; object-fit: cover; filter: saturate(.82) contrast(1.04) brightness(.83); transition: opacity .45s var(--ease), transform .9s var(--ease); }
.scene-stage:hover > img { transform: scale(1.018); }
.scene-stage > img.is-switching { opacity: .12; transform: scale(1.035); }
.scene-caption { position: absolute; z-index: 3; left: 20px; right: 20px; bottom: 20px; min-height: 138px; display: flex; align-items: center; justify-content: space-between; gap: 30px; padding: 24px 26px; border-radius: 16px; }
.scene-copy { display: grid; grid-template-columns: 72px 1fr; gap: 10px; align-items: start; }
.scene-copy > span { color: var(--orange); font-size: 34px; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-weight: 300; }
.scene-copy h3 { margin: 2px 0 9px; font-size: 22px; }
.scene-copy p { max-width: 650px; margin: 0; color: #aab8c1; line-height: 1.65; font-size: 14px; }
.scene-controls { display: flex; align-items: center; gap: 12px; flex: 0 0 auto; }
.scene-controls button { width: 42px; height: 42px; display: grid; place-items: center; border: 1px solid var(--line); border-radius: 8px; background: rgba(255,255,255,.035); cursor: pointer; transition: .25s; }
.scene-controls button:hover { border-color: rgba(255,255,255,.5); background: rgba(255,255,255,.08); }
.scene-controls span { width: 54px; color: var(--muted); text-align: center; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }
.scene-controls b { color: #fff; }

.closing { padding-top: 80px; }
.closing-panel { position: relative; min-height: 520px; display: flex; flex-direction: column; align-items: flex-start; justify-content: center; padding: clamp(40px, 7vw, 100px); border-radius: var(--radius); overflow: hidden; background: radial-gradient(circle at 82% 30%, rgba(55,129,176,.28), transparent 32%), linear-gradient(135deg, rgba(15,37,54,.78), rgba(4,14,22,.72)); }
.closing-panel::after { content: ""; position: absolute; right: -7%; top: 8%; width: 46%; aspect-ratio: 1; border: 1px solid rgba(153,204,235,.18); border-radius: 50%; box-shadow: 0 0 0 50px rgba(153,204,235,.03), 0 0 0 100px rgba(153,204,235,.02); }
.closing-panel h2, .closing-panel p, .closing-panel a { position: relative; z-index: 2; }
.closing-panel p { margin: 26px 0 34px; color: var(--muted); font-size: 18px; }
.site-footer { min-height: 160px; display: grid; grid-template-columns: 1fr 1fr 1fr; align-items: center; gap: 20px; padding: 0 var(--pad); border-top: 1px solid var(--line); color: var(--muted-2); font-size: 13px; }
.site-footer p { text-align: center; }
.site-footer > span { text-align: right; }

.reveal, .reveal-group > * { opacity: 0; transform: translateY(28px); transition: opacity .8s var(--ease), transform .8s var(--ease); }
.reveal.visible, .reveal-group.visible > * { opacity: 1; transform: translateY(0); }
.reveal-group.visible > *:nth-child(2) { transition-delay: .08s; }
.reveal-group.visible > *:nth-child(3) { transition-delay: .16s; }
.reveal-group.visible > *:nth-child(4) { transition-delay: .24s; }
.reveal-group.visible > *:nth-child(5) { transition-delay: .32s; }
.reveal-group.visible > *:nth-child(6) { transition-delay: .4s; }

@media (max-width: 1100px) {
  .main-nav { gap: 19px; }
  .main-nav a { font-size: 13px; }
  .hero-media { left: 20%; }
  .hero-content { width: 55vw; }
  .intro { grid-template-columns: 1fr; }
  .intro::before { left: var(--pad); }
  .capability-layout { grid-template-columns: 300px 1fr; gap: 30px; }
  .capability-stage { min-height: 620px; }
  .scene-layout { grid-template-columns: 280px 1fr; }
  .scene-stage { min-height: 600px; }
}

@media (max-width: 820px) {
  .site-header { height: 68px; }
  .main-nav { position: fixed; inset: 68px 0 auto; display: flex; height: auto; flex-direction: column; gap: 0; padding: 18px var(--pad) 28px; background: rgba(2,8,14,.96); border-bottom: 1px solid var(--line); transform: translateY(-130%); transition: .45s var(--ease); z-index: -1; }
  .main-nav.open { transform: translateY(0); }
  .main-nav a { min-height: 48px; justify-items: start; border-bottom: 1px solid var(--line); }
  .main-nav a::after { display: none; }
  .menu-button { display: block; }
  .menu-button[aria-expanded="true"] span:first-child { transform: translateY(4px) rotate(45deg); }
  .menu-button[aria-expanded="true"] span:last-child { transform: translateY(-4px) rotate(-45deg); }
  .hero { min-height: 820px; height: 100svh; align-items: flex-end; padding-bottom: 126px; }
  .hero-media { inset: 0; }
  .hero-media video { mask-image: linear-gradient(180deg, #000 0%, rgba(0,0,0,.7) 40%, transparent 88%); -webkit-mask-image: linear-gradient(180deg, #000 0%, rgba(0,0,0,.7) 40%, transparent 88%); object-position: 62% center; }
  .hero-media::after { background: linear-gradient(180deg, rgba(0,5,10,.2), rgba(1,6,11,.18) 30%, rgba(1,6,11,.95) 84%); }
  .signal-ribbon { width: 100%; height: 54%; top: 11%; opacity: .7; }
  .hero-content { width: auto; margin: 0 var(--pad); padding: 0; }
  .hero h1 { font-size: clamp(60px, 18vw, 86px); margin-bottom: 16px; }
  .hero-statement { font-size: clamp(34px, 9vw, 48px); }
  .hero-copy { font-size: 15px; line-height: 1.75; }
  .hero-status { display: none; }
  .hero-actions { margin-top: 28px; }
  .button { min-height: 52px; padding: 0 20px; gap: 16px; }
  .scroll-cue { display: none; }
  .section-shell { padding-top: 100px; padding-bottom: 100px; }
  .intro-principles article { grid-template-columns: 54px 120px 1fr; }
  .capability-layout { grid-template-columns: 1fr; }
  .capability-rail { display: grid; grid-template-columns: 1fr 1fr; }
  .capability-tab { border-right: 1px solid var(--line); }
  .capability-stage { min-height: 560px; }
  .logistics-line { grid-template-columns: 1fr; gap: 20px; }
  .scene-layout { grid-template-columns: 1fr; }
  .scene-nav { display: flex; overflow-x: auto; padding: 8px; border-radius: 14px; scrollbar-width: none; }
  .scene-nav::-webkit-scrollbar { display: none; }
  .scene-tab { flex: 0 0 210px; min-height: 60px; grid-template-columns: 38px 1fr; margin: 0; padding: 0 12px; border-bottom: 0; border-right: 1px solid var(--line); }
  .scene-tab::before { left: 0; top: auto; bottom: -8px; width: 0; height: 2px; transform: none; }
  .scene-tab.active::before { width: 60%; height: 2px; }
  .scene-stage { min-height: 600px; }
  .scene-caption { flex-direction: column; align-items: stretch; }
  .scene-controls { justify-content: flex-end; }
  .site-footer { grid-template-columns: 1fr; padding: 48px var(--pad); }
  .site-footer p, .site-footer > span { text-align: left; margin: 0; }
}

@media (max-width: 560px) {
  :root { --pad: 20px; }
  .hero { min-height: 780px; padding-bottom: 78px; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions .button { width: 100%; justify-content: space-between; }
  .intro-heading h2, .section-heading h2, .closing h2 { font-size: 38px; }
  .intro-heading p, .section-heading p { font-size: 15px; }
  .section-heading { align-items: flex-start; margin-bottom: 48px; }
  .section-index { display: none; }
  .intro-principles article { grid-template-columns: 42px 1fr; gap: 10px; }
  .intro-principles article p { grid-column: 2; }
  .intro-principles h3 { font-size: 22px; }
  .capability-rail { grid-template-columns: 1fr; }
  .capability-tab { min-height: 78px; border-right: 0; }
  .capability-tab small { display: none; }
  .capability-stage { min-height: 470px; }
  .campus-map { bottom: 160px; padding: 12px; }
  .stage-detail { grid-template-columns: 54px 1fr; min-height: 160px; padding: 20px; }
  .stage-detail > span { font-size: 28px; }
  .stage-detail h3 { font-size: 19px; }
  .stage-detail p { font-size: 13px; }
  .scene-stage { min-height: 560px; }
  .scene-stage > img { height: 58%; position: relative; }
  .scene-caption { left: 0; right: 0; bottom: 0; min-height: 45%; border-radius: 0; border-width: 1px 0 0; }
  .scene-copy { grid-template-columns: 48px 1fr; }
  .scene-copy > span { font-size: 25px; }
  .scene-copy h3 { font-size: 19px; }
  .scene-copy p { font-size: 13px; }
  .closing-panel { min-height: 460px; padding: 34px 26px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .hero-media video { display: none; }
  .hero-media { background: url("assets/scenes/classroom.png") center / cover no-repeat; mask-image: linear-gradient(90deg, transparent, #000 28%); -webkit-mask-image: linear-gradient(90deg, transparent, #000 28%); }
}