:root {
  --ink: #07110f;
  --ink-soft: #0b1815;
  --panel: #0d1e1a;
  --line: rgba(191, 255, 91, 0.16);
  --line-soft: rgba(235, 247, 239, 0.1);
  --acid: #bfff5b;
  --acid-bright: #d4ff91;
  --paper: #edf5ef;
  --muted: #8c9b94;
  --black: #030806;
  --display: "DIN Alternate", "Avenir Next Condensed", "Bahnschrift Condensed", sans-serif;
  --body: "Avenir Next", "PingFang SC", "Microsoft YaHei", sans-serif;
  --mono: "SFMono-Regular", "Cascadia Code", "Liberation Mono", monospace;
  --shell: min(1440px, calc(100vw - 64px));
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--paper);
  background: var(--ink);
  font-family: var(--body);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: 20;
  pointer-events: none;
  content: "";
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.8'/%3E%3C/svg%3E");
}

a { color: inherit; text-decoration: none; }
button { color: inherit; font: inherit; }
.section-shell { width: var(--shell); margin-inline: auto; }

.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 100;
  padding: 10px 16px;
  color: var(--ink);
  background: var(--acid);
  transform: translateY(-150%);
}
.skip-link:focus { transform: translateY(0); }

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 50;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  width: 100%;
  height: 78px;
  padding: 0 32px;
  border-bottom: 1px solid var(--line-soft);
  background: rgba(7, 17, 15, 0.74);
  backdrop-filter: blur(20px);
}

.brand { display: inline-flex; align-items: center; gap: 11px; width: max-content; font-family: var(--display); font-size: 22px; font-weight: 800; letter-spacing: -0.02em; }
.brand > span:last-child > span { color: var(--acid); }
.brand-mark { position: relative; display: grid; grid-template-columns: repeat(3, 5px); align-items: end; gap: 2px; width: 19px; height: 19px; transform: skew(-15deg); }
.brand-mark i { display: block; background: var(--acid); }
.brand-mark i:nth-child(1) { height: 8px; }
.brand-mark i:nth-child(2) { height: 14px; }
.brand-mark i:nth-child(3) { height: 19px; }

.desktop-nav { display: flex; align-items: center; gap: 34px; font-size: 12px; letter-spacing: 0.08em; }
.desktop-nav a, .footer-links a { position: relative; color: #aab8b1; transition: color 180ms ease; }
.desktop-nav a::after, .footer-links a::after { position: absolute; right: 0; bottom: -7px; left: 0; height: 1px; content: ""; background: var(--acid); transform: scaleX(0); transform-origin: right; transition: transform 220ms ease; }
.desktop-nav a:hover, .footer-links a:hover { color: var(--paper); }
.desktop-nav a:hover::after, .footer-links a:hover::after { transform: scaleX(1); transform-origin: left; }

.header-actions { display: flex; align-items: center; justify-content: flex-end; gap: 20px; }
.lang-switch { display: flex; gap: 6px; align-items: center; padding: 0; color: #6f7e77; font-size: 11px; letter-spacing: 0.08em; background: transparent; border: 0; cursor: pointer; }
.lang-active { color: var(--acid); }
.lang-divider { opacity: 0.35; }
.login-link { display: flex; align-items: center; gap: 16px; padding: 11px 15px; color: var(--ink); background: var(--acid); font-size: 11px; font-weight: 700; letter-spacing: 0.08em; transition: background 180ms ease, transform 180ms ease; }
.login-link:hover { background: var(--acid-bright); transform: translateY(-2px); }
.menu-toggle { display: none; width: 38px; height: 38px; background: transparent; border: 1px solid var(--line-soft); }
.menu-toggle span { display: block; width: 16px; height: 1px; margin: 5px auto; background: var(--paper); transition: transform 180ms ease; }
.menu-toggle[aria-expanded="true"] span:first-child { transform: translateY(3px) rotate(45deg); }
.menu-toggle[aria-expanded="true"] span:last-child { transform: translateY(-3px) rotate(-45deg); }
.mobile-menu { display: none; }

.hero { position: relative; display: grid; grid-template-columns: 0.92fr 1.08fr; align-items: center; min-height: 820px; padding-top: 118px; overflow: hidden; }
.hero-grid, .cta-grid { position: absolute; inset: 0; pointer-events: none; background-image: linear-gradient(var(--line-soft) 1px, transparent 1px), linear-gradient(90deg, var(--line-soft) 1px, transparent 1px); background-size: 72px 72px; mask-image: linear-gradient(to bottom, transparent, black 16%, black 78%, transparent); }
.hero-grid::after { position: absolute; inset: 0; content: ""; background: linear-gradient(90deg, var(--ink) 0%, transparent 18%, transparent 82%, var(--ink) 100%); }
.hero-glow { position: absolute; border-radius: 50%; filter: blur(110px); opacity: 0.1; }
.hero-glow-a { top: 5%; left: -15%; width: 460px; height: 460px; background: var(--acid); }
.hero-glow-b { right: 0; bottom: 0; width: 360px; height: 360px; background: #2de3a0; }
.hero-copy { position: relative; z-index: 2; padding-bottom: 8%; }
.eyebrow { display: inline-flex; align-items: center; gap: 12px; margin-bottom: 34px; color: #a7b5ae; font-family: var(--mono); font-size: 10px; letter-spacing: 0.16em; text-transform: uppercase; }
.live-dot { position: relative; width: 7px; height: 7px; border-radius: 50%; background: var(--acid); box-shadow: 0 0 20px var(--acid); }
.live-dot::after { position: absolute; inset: -5px; content: ""; border: 1px solid var(--acid); border-radius: 50%; animation: ping 2s ease-out infinite; }
@keyframes ping { 0% { opacity: 0; transform: scale(0.6); } 30% { opacity: 0.8; } 100% { opacity: 0; transform: scale(1.6); } }

h1, h2, h3, p { margin-top: 0; }
h1, h2 { font-family: var(--display); font-weight: 700; letter-spacing: -0.055em; text-transform: uppercase; }
h1 { margin-bottom: 28px; font-size: clamp(72px, 8vw, 136px); line-height: 0.8; }
h1 em { color: var(--acid); font-style: normal; }
.hero-lead { max-width: 590px; margin-bottom: 38px; color: #a8b6af; font-size: 17px; line-height: 1.75; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; }
.button { display: inline-flex; align-items: center; justify-content: space-between; min-width: 190px; padding: 16px 18px; border: 1px solid var(--line-soft); font-size: 12px; font-weight: 700; letter-spacing: 0.08em; transition: border 180ms ease, background 180ms ease, color 180ms ease, transform 180ms ease; }
.button-primary { color: var(--ink); background: var(--acid); border-color: var(--acid); }
.button-primary:hover { background: var(--acid-bright); transform: translateY(-3px); }
.button-ghost { color: var(--paper); background: rgba(255,255,255,0.02); }
.button-ghost:hover { border-color: var(--acid); color: var(--acid); }
.button-arrow { font-size: 16px; }
.hero-index { position: absolute; right: 0; bottom: 40px; color: var(--acid); font-family: var(--mono); font-size: 11px; letter-spacing: 0.08em; }
.hero-index span { color: #4e5f57; }

.network-stage { position: relative; z-index: 1; justify-self: end; width: min(650px, 48vw); aspect-ratio: 1; border: 1px solid var(--line-soft); border-radius: 50%; background: radial-gradient(circle, rgba(191,255,91,0.07), transparent 40%), repeating-radial-gradient(circle, transparent 0 47px, rgba(191,255,91,0.055) 48px 49px); box-shadow: inset 0 0 80px rgba(0,0,0,0.5), 0 0 120px rgba(191,255,91,0.04); }
.network-stage::before, .network-stage::after { position: absolute; top: 50%; left: 50%; content: ""; background: var(--line-soft); transform: translate(-50%, -50%); }
.network-stage::before { width: 112%; height: 1px; }
.network-stage::after { width: 1px; height: 112%; }
.orbit { position: absolute; top: 50%; left: 50%; border: 1px dashed rgba(191,255,91,0.14); border-radius: 50%; transform: translate(-50%, -50%); animation: orbit 26s linear infinite; }
.orbit-a { width: 82%; height: 82%; }
.orbit-b { width: 60%; height: 60%; animation-direction: reverse; animation-duration: 18s; }
.orbit-c { width: 36%; height: 36%; animation-duration: 12s; }
@keyframes orbit { to { transform: translate(-50%, -50%) rotate(360deg); } }
.core-node { position: absolute; top: 50%; left: 50%; z-index: 3; display: grid; place-content: center; width: 112px; height: 112px; text-align: center; background: var(--acid); border-radius: 50%; box-shadow: 0 0 60px rgba(191,255,91,0.24); transform: translate(-50%, -50%); }
.core-node span { color: var(--ink); font-family: var(--display); font-size: 29px; font-weight: 800; line-height: 1; }
.core-node small { margin-top: 4px; color: rgba(7,17,15,0.65); font-family: var(--mono); font-size: 8px; letter-spacing: 0.2em; }
.core-pulse { position: absolute; inset: -1px; border: 1px solid var(--acid); border-radius: inherit; animation: core-pulse 2.6s ease-out infinite; }
@keyframes core-pulse { to { opacity: 0; transform: scale(1.55); } }
.route { position: absolute; top: 50%; left: 50%; z-index: 2; width: 40%; height: 1px; background: linear-gradient(90deg, rgba(191,255,91,0.7), transparent); transform-origin: left; }
.route i { position: absolute; top: -2px; width: 5px; height: 5px; background: var(--acid); border-radius: 50%; box-shadow: 0 0 12px var(--acid); animation: packet 2.4s linear infinite; }
.route-a { transform: rotate(-35deg); }
.route-b { transform: rotate(52deg); }
.route-c { transform: rotate(148deg); }
.route-d { transform: rotate(218deg); }
.route-b i { animation-delay: -0.8s; }.route-c i { animation-delay: -1.4s; }.route-d i { animation-delay: -2s; }
@keyframes packet { from { left: 0; opacity: 0; } 15% { opacity: 1; } to { left: 100%; opacity: 0; } }
.edge-node { position: absolute; z-index: 4; display: flex; align-items: center; gap: 8px; color: #93a39b; font-family: var(--mono); font-size: 8px; letter-spacing: 0.12em; }
.edge-node i { width: 10px; height: 10px; background: var(--ink); border: 2px solid var(--acid); border-radius: 50%; box-shadow: 0 0 16px rgba(191,255,91,0.5); }
.node-a { top: 20%; right: 12%; }.node-b { right: 8%; bottom: 24%; }.node-c { bottom: 14%; left: 19%; }.node-d { top: 25%; left: 9%; }
.signal-card { position: absolute; z-index: 5; width: 142px; padding: 13px; background: rgba(7,17,15,0.88); border: 1px solid var(--line); backdrop-filter: blur(12px); }
.signal-card span { display: block; margin-bottom: 6px; color: #607169; font-family: var(--mono); font-size: 7px; letter-spacing: 0.13em; }
.signal-card strong { color: var(--acid); font-family: var(--mono); font-size: 10px; letter-spacing: 0.06em; }
.signal-card-a { top: 10%; right: -3%; }.signal-card-b { bottom: 9%; left: -3%; }
.stage-meta { position: absolute; left: 50%; z-index: 4; display: flex; justify-content: space-between; width: 54%; color: #46564e; font-family: var(--mono); font-size: 7px; letter-spacing: 0.12em; transform: translateX(-50%); }
.stage-meta-top { top: -28px; }.stage-meta-bottom { bottom: -28px; }

.signal-strip { overflow: hidden; padding: 18px 0; color: var(--ink); background: var(--acid); border-block: 1px solid var(--acid); transform: rotate(-1deg) scale(1.02); }
.signal-track { display: flex; width: max-content; animation: marquee 28s linear infinite; }
.signal-track span { display: inline-flex; align-items: center; gap: 34px; padding-right: 34px; font-family: var(--display); font-size: 14px; font-weight: 800; letter-spacing: 0.06em; }
.signal-track i { font-size: 7px; }
@keyframes marquee { to { transform: translateX(-50%); } }

.manifesto { padding-block: 160px; }
.section-label { display: flex; align-items: center; gap: 18px; margin-bottom: 58px; color: #778880; font-family: var(--mono); font-size: 9px; letter-spacing: 0.14em; text-transform: uppercase; }
.section-label span:first-child { color: var(--acid); }
.section-label::after { width: 60px; height: 1px; content: ""; background: var(--line); }
.manifesto-layout { display: grid; grid-template-columns: 1.5fr 0.5fr; gap: 10%; align-items: end; }
.manifesto h2, .section-heading h2, .developer-copy h2, .final-cta h2 { margin-bottom: 0; font-size: clamp(48px, 6.2vw, 96px); line-height: 0.95; }
.manifesto-copy { padding-bottom: 7px; border-top: 1px solid var(--line); }
.manifesto-copy p { padding-top: 22px; color: #99a9a1; font-size: 14px; line-height: 1.75; }

.capabilities, .flow-section, .developer-section { padding-bottom: 160px; }
.section-heading { display: grid; grid-template-columns: 0.55fr 1.45fr; margin-bottom: 72px; }
.section-heading .section-label { margin: 10px 0 0; }
.capability-grid { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line-soft); border-left: 1px solid var(--line-soft); }
.capability-card { position: relative; min-height: 410px; padding: 24px; overflow: hidden; background: linear-gradient(145deg, rgba(255,255,255,0.025), rgba(255,255,255,0)); border-right: 1px solid var(--line-soft); border-bottom: 1px solid var(--line-soft); transition: background 250ms ease; }
.capability-card:hover { background: rgba(191,255,91,0.035); }
.card-wide { grid-column: span 2; }
.card-top { display: flex; justify-content: space-between; color: #53645c; font-family: var(--mono); font-size: 8px; letter-spacing: 0.12em; }
.card-status { color: var(--acid); }
.capability-card h3 { position: absolute; right: 24px; bottom: 74px; left: 24px; margin: 0; font-family: var(--display); font-size: 25px; text-transform: uppercase; }
.capability-card p { position: absolute; right: 24px; bottom: 20px; left: 24px; margin: 0; color: #82928a; font-size: 12px; line-height: 1.6; }
.routing-visual { position: absolute; top: 85px; right: 10%; left: 10%; display: grid; grid-template-columns: 56px 1fr 132px; align-items: center; }
.routing-source { display: grid; place-items: center; width: 56px; height: 56px; color: var(--ink); background: var(--acid); border-radius: 50%; font-family: var(--mono); font-size: 11px; }
.routing-lines { display: grid; gap: 14px; }
.routing-lines i { display: block; height: 1px; background: linear-gradient(90deg, var(--acid), rgba(191,255,91,0.08)); transform-origin: left; }
.routing-lines i:first-child { transform: rotate(-10deg); }.routing-lines i:last-child { transform: rotate(10deg); }
.routing-targets { display: grid; gap: 8px; }
.routing-targets span { display: flex; justify-content: space-between; padding: 7px 9px; color: #bac6c0; border: 1px solid var(--line); font-family: var(--mono); font-size: 9px; }
.routing-targets span:first-child { color: var(--acid); background: rgba(191,255,91,0.08); }
.routing-targets small { color: #5e7067; }
.mini-terminal { position: absolute; top: 96px; right: 24px; left: 24px; display: grid; grid-template-columns: auto 1fr auto; gap: 9px; padding: 14px; background: var(--black); border: 1px solid var(--line-soft); font-family: var(--mono); font-size: 8px; }
.mini-terminal span, .mini-terminal i { color: var(--acid); font-style: normal; }.mini-terminal code { color: #85968d; }
.pulse-chart { position: absolute; top: 78px; right: 24px; left: 24px; display: flex; align-items: end; gap: 7px; height: 80px; border-bottom: 1px solid var(--line); }
.pulse-chart i { flex: 1; background: linear-gradient(var(--acid), rgba(191,255,91,0.08)); animation: bars 2.4s ease-in-out infinite alternate; }
.pulse-chart i:nth-child(1) { height: 24%; }.pulse-chart i:nth-child(2) { height: 48%; }.pulse-chart i:nth-child(3) { height: 35%; }.pulse-chart i:nth-child(4) { height: 82%; }.pulse-chart i:nth-child(5) { height: 55%; }.pulse-chart i:nth-child(6) { height: 92%; }.pulse-chart i:nth-child(7) { height: 67%; }.pulse-chart i:nth-child(8) { height: 76%; }
@keyframes bars { to { filter: brightness(1.5); transform: scaleY(0.82); } }
.shield-visual { position: absolute; top: 66px; left: 50%; display: grid; place-items: center; width: 115px; height: 115px; border: 1px solid var(--line); border-radius: 50%; transform: translateX(-50%); }
.shield-visual::before, .shield-visual::after { position: absolute; inset: 12px; content: ""; border: 1px dashed rgba(191,255,91,0.18); border-radius: inherit; animation: orbit 12s linear infinite; }.shield-visual::after { inset: 27px; animation-direction: reverse; }
.shield-visual div { z-index: 1; display: grid; place-items: center; width: 50px; height: 58px; color: var(--acid); background: rgba(191,255,91,0.08); clip-path: polygon(50% 0, 100% 20%, 90% 75%, 50% 100%, 10% 75%, 0 20%); font-family: var(--mono); font-size: 8px; }
.worker-visual { position: absolute; top: 104px; right: 8%; left: 8%; display: flex; align-items: center; }
.worker-visual span { padding: 10px; color: #a9b7b0; border: 1px solid var(--line); font-family: var(--mono); font-size: 8px; }.worker-visual span:nth-of-type(2) { color: var(--ink); background: var(--acid); }
.worker-visual i { flex: 1; height: 1px; background: var(--line); }

.flow-rail { position: relative; display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); }
.flow-rail::before { position: absolute; top: -3px; left: 0; width: 7px; height: 7px; content: ""; background: var(--acid); border-radius: 50%; box-shadow: 0 0 12px var(--acid); animation: flow-dot 8s linear infinite; }
@keyframes flow-dot { to { left: 100%; } }
.flow-rail article { min-height: 230px; padding: 26px 26px 20px 0; border-right: 1px solid var(--line-soft); }
.flow-rail article + article { padding-left: 26px; }
.flow-rail b { color: var(--acid); font-family: var(--mono); font-size: 9px; font-weight: 400; }
.flow-rail h3 { margin: 78px 0 12px; font-family: var(--display); font-size: 21px; text-transform: uppercase; }
.flow-rail p { color: #7f9087; font-size: 12px; line-height: 1.65; }

.developer-section { display: grid; grid-template-columns: 0.8fr 1.2fr; gap: 8%; align-items: center; }
.developer-copy .section-label { margin-bottom: 42px; }
.developer-copy h2 { font-size: clamp(48px, 5.6vw, 86px); }
.developer-copy > p { max-width: 540px; margin: 30px 0 40px; color: #8fa097; font-size: 14px; line-height: 1.8; }
.developer-links { display: flex; gap: 26px; }
.developer-links a { display: flex; gap: 20px; align-items: center; padding-bottom: 8px; color: #acbbb3; border-bottom: 1px solid var(--line); font-size: 11px; }.developer-links a:hover { color: var(--acid); }
.developer-links i { font-style: normal; }
.code-window { overflow: hidden; background: #050b09; border: 1px solid var(--line); box-shadow: 0 32px 90px rgba(0,0,0,0.32); transform: perspective(1000px) rotateY(-2deg); }
.code-titlebar { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; padding: 14px 18px; color: #586a61; border-bottom: 1px solid var(--line-soft); font-family: var(--mono); font-size: 8px; letter-spacing: 0.14em; }
.code-titlebar > span:last-child { text-align: right; }.code-titlebar > span:first-child { display: flex; gap: 5px; }.code-titlebar i { display: block; width: 6px; height: 6px; background: #2c3933; border-radius: 50%; }.code-titlebar i:first-child { background: var(--acid); }
.code-window pre { margin: 0; padding: 38px; overflow-x: auto; color: #93a39b; font: 12px/1.9 var(--mono); }
.code-dim { color: #5d6d65; }.code-green, .code-key { color: var(--acid); }.code-string { color: #d1ddd6; }
.code-response { display: flex; justify-content: space-between; padding: 13px 18px; color: #5a6b62; border-top: 1px solid var(--line-soft); font-family: var(--mono); font-size: 8px; }.code-response span:first-child { color: var(--acid); }

.final-cta { position: relative; display: flex; flex-direction: column; align-items: center; justify-content: center; min-height: 650px; margin-bottom: 80px; overflow: hidden; text-align: center; background: var(--ink-soft); border: 1px solid var(--line-soft); }
.final-cta::before { position: absolute; top: 50%; left: 50%; width: 480px; height: 480px; content: ""; background: var(--acid); border-radius: 50%; filter: blur(180px); opacity: 0.07; transform: translate(-50%, -50%); }
.cta-grid { opacity: 0.6; }.cta-kicker { z-index: 1; margin-bottom: 28px; color: var(--acid); font-family: var(--mono); font-size: 8px; letter-spacing: 0.2em; }
.final-cta h2 { z-index: 1; font-size: clamp(60px, 7vw, 110px); }.final-cta p { z-index: 1; margin: 28px 0; color: #899a91; font-size: 14px; }.button-large { z-index: 1; min-width: 230px; }

.site-footer { padding: 18px 0 30px; border-top: 1px solid var(--line-soft); }
.footer-main { display: flex; justify-content: space-between; align-items: center; padding: 36px 0 64px; }.footer-main p { margin: 0; color: #697a71; font-size: 12px; }
.footer-links { display: flex; gap: 32px; padding-bottom: 36px; font-size: 11px; }
.footer-bottom { display: grid; grid-template-columns: 1fr auto 1fr; padding-top: 20px; color: #4e5e56; border-top: 1px solid var(--line-soft); font-family: var(--mono); font-size: 8px; letter-spacing: 0.12em; }.footer-bottom a { text-align: right; }.footer-bottom a:hover { color: var(--acid); }

.reveal { opacity: 0; transform: translateY(28px); transition: opacity 800ms cubic-bezier(.2,.7,.2,1), transform 800ms cubic-bezier(.2,.7,.2,1); }
.reveal.is-visible { opacity: 1; transform: translateY(0); }
.capability-card:nth-child(2) { transition-delay: 70ms; }.capability-card:nth-child(3) { transition-delay: 140ms; }.capability-card:nth-child(4) { transition-delay: 70ms; }.capability-card:nth-child(5) { transition-delay: 140ms; }

html[data-lang="zh"] [data-en], html[data-lang="en"] [data-zh] { }

@media (max-width: 1080px) {
  :root { --shell: min(100% - 40px, 960px); }
  .desktop-nav { display: none; }
  .site-header { grid-template-columns: 1fr auto; padding-inline: 20px; }
  .menu-toggle { display: block; }
  .login-link { display: none; }
  .mobile-menu { position: fixed; top: 78px; right: 0; left: 0; z-index: 49; display: flex; flex-direction: column; padding: 25px 20px 32px; background: rgba(7,17,15,0.98); border-bottom: 1px solid var(--line); transform: translateY(-120%); transition: transform 260ms ease; }
  .mobile-menu.is-open { transform: translateY(0); }
  .mobile-menu a { padding: 15px 0; color: #aebbb5; border-bottom: 1px solid var(--line-soft); font-size: 13px; }
  .hero { grid-template-columns: 1fr; padding-top: 150px; padding-bottom: 110px; }
  .hero-copy { padding-bottom: 70px; }
  .network-stage { justify-self: center; width: min(650px, 82vw); }
  .manifesto-layout { grid-template-columns: 1fr; }.manifesto-copy { max-width: 520px; margin-top: 55px; }
  .section-heading { grid-template-columns: 1fr; gap: 10px; }.section-heading .section-label { margin-bottom: 25px; }
  .capability-grid { grid-template-columns: repeat(2, 1fr); }
  .developer-section { grid-template-columns: 1fr; }.code-window { margin-top: 70px; transform: none; }
}

@media (max-width: 680px) {
  :root { --shell: calc(100% - 28px); }
  .site-header { height: 68px; }.mobile-menu { top: 68px; }
  .hero { min-height: auto; padding-top: 132px; }
  h1 { font-size: clamp(60px, 21vw, 92px); }.hero-lead { font-size: 15px; }.button { width: 100%; }
  .network-stage { width: 86vw; }.signal-card { width: 118px; padding: 10px; }.stage-meta { display: none; }.core-node { width: 84px; height: 84px; }.core-node span { font-size: 22px; }
  .manifesto, .capabilities, .flow-section, .developer-section { padding-bottom: 110px; }.manifesto { padding-top: 120px; }
  .manifesto h2, .section-heading h2, .developer-copy h2 { font-size: 48px; }
  .capability-grid { grid-template-columns: 1fr; }.card-wide { grid-column: span 1; }.capability-card { min-height: 390px; }
  .flow-rail { grid-template-columns: 1fr; }.flow-rail::before { display: none; }.flow-rail article, .flow-rail article + article { min-height: 0; padding: 25px 0; border-right: 0; border-bottom: 1px solid var(--line-soft); }.flow-rail h3 { margin-top: 35px; }
  .developer-links { flex-direction: column; gap: 14px; }.code-window pre { padding: 24px 18px; font-size: 10px; }
  .final-cta { min-height: 560px; margin-bottom: 50px; padding: 24px; }.final-cta h2 { font-size: 54px; }
  .footer-main { align-items: flex-start; flex-direction: column; gap: 24px; }.footer-links { display: grid; grid-template-columns: 1fr 1fr; }.footer-bottom { grid-template-columns: 1fr auto; gap: 12px; }.footer-bottom > span:nth-child(2) { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
  .reveal { opacity: 1; transform: none; }
}