@import url('../fonts/fonts.css');

:root {
  --ice-950: #02070d;
  --ice-925: #030b14;
  --ice-900: #05111c;
  --ice-850: #071a28;
  --ice-800: #0a2333;
  --ice-700: #10394e;
  --ice-600: #18546c;
  --cyan-500: #31d9f4;
  --cyan-400: #69e9ff;
  --cyan-300: #a4f3ff;
  --cyan-200: #d7fbff;
  --blue-500: #1676ff;
  --blue-400: #4a98ff;
  --ink: #effcff;
  --ink-soft: #c0dfe8;
  --muted: #82a9b8;
  --hairline: rgba(151, 226, 245, 0.16);
  --hairline-strong: rgba(114, 231, 255, 0.34);
  --warning: #ffc66d;
  --danger: #ff7d88;
  --success: #76f2c2;
  --sans: 'IBM Plex Sans', 'Segoe UI', sans-serif;
  --mono: 'IBM Plex Mono', 'Cascadia Code', monospace;
  --content: min(1440px, calc(100vw - 64px));
  --reading: 760px;
  --nav-h: 72px;
  --ease: cubic-bezier(.2,.7,.2,1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; background: var(--ice-950); }
body {
  margin: 0;
  min-width: 320px;
  color: var(--ink);
  background:
    radial-gradient(circle at 72% -10%, rgba(26, 126, 186, .16), transparent 28rem),
    linear-gradient(180deg, var(--ice-925), var(--ice-950) 65%);
  font-family: var(--sans);
  font-weight: 400;
  line-height: 1.6;
  overflow-x: hidden;
  text-rendering: optimizeLegibility;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -3;
  pointer-events: none;
  opacity: .24;
  background-image:
    linear-gradient(rgba(119, 217, 239, .045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(119, 217, 239, .045) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: linear-gradient(to bottom, #000, transparent 72%);
}

::selection { color: var(--ice-950); background: var(--cyan-300); }
a { color: inherit; }
img { display: block; max-width: 100%; }
button, input { font: inherit; }
button { color: inherit; }

.skip-link {
  position: fixed; left: 16px; top: -80px; z-index: 999;
  padding: 12px 18px; background: var(--cyan-300); color: var(--ice-950);
  transition: top .2s;
}
.skip-link:focus { top: 16px; }

.site-header {
  position: fixed; inset: 0 0 auto; z-index: 100;
  height: var(--nav-h);
  border-bottom: 1px solid rgba(136, 233, 255, .12);
  background: rgba(2, 9, 16, .83);
  backdrop-filter: blur(18px) saturate(130%);
}
.nav-shell {
  width: var(--content); height: 100%; margin: auto;
  display: grid; grid-template-columns: 250px 1fr auto; align-items: center;
  gap: 24px;
}
.brand {
  display: inline-flex; align-items: center; gap: 12px;
  text-decoration: none;
  font-family: var(--mono); font-size: 12px; line-height: 1.1;
  letter-spacing: .12em; text-transform: uppercase;
}
.brand-mark {
  width: 34px; height: 34px; position: relative;
  border: 1px solid var(--hairline-strong);
  clip-path: polygon(0 0, 78% 0, 100% 22%, 100% 100%, 22% 100%, 0 78%);
  background:
    linear-gradient(135deg, transparent 36%, rgba(82, 226, 255, .25) 37% 44%, transparent 45%),
    var(--ice-850);
}
.brand-mark::before, .brand-mark::after {
  content: ''; position: absolute; background: var(--cyan-400);
  box-shadow: 0 0 14px var(--cyan-500);
}
.brand-mark::before { width: 14px; height: 1px; left: 9px; top: 16px; }
.brand-mark::after { width: 1px; height: 14px; left: 16px; top: 9px; }
.brand strong { font-weight: 600; color: var(--cyan-300); }
.brand span { color: var(--muted); }

.primary-nav { display: flex; justify-content: center; gap: 2px; }
.primary-nav a {
  position: relative; padding: 25px 10px 23px;
  color: var(--muted); text-decoration: none;
  font-family: var(--mono); font-size: 11px; letter-spacing: .055em;
  white-space: nowrap; transition: color .2s var(--ease);
}
.primary-nav a::after {
  content: ''; position: absolute; height: 2px; inset: auto 10px -1px;
  background: var(--cyan-400); transform: scaleX(0); transform-origin: left;
  transition: transform .25s var(--ease); box-shadow: 0 0 12px var(--cyan-500);
}
.primary-nav a:hover, .primary-nav a[aria-current='page'] { color: var(--ink); }
.primary-nav a[aria-current='page']::after, .primary-nav a:hover::after { transform: scaleX(1); }
.nav-index {
  font-family: var(--mono); font-size: 10px; color: var(--cyan-400);
  border: 1px solid var(--hairline); padding: 7px 9px; min-width: 54px; text-align: center;
}
.nav-toggle { display: none; width: 48px; height: 48px; border: 0; background: transparent; }
.nav-toggle i, .nav-toggle i::before, .nav-toggle i::after {
  display: block; width: 22px; height: 1px; background: var(--ink); position: relative; margin: auto;
}
.nav-toggle i::before, .nav-toggle i::after { content: ''; position: absolute; left: 0; }
.nav-toggle i::before { top: -7px; } .nav-toggle i::after { top: 7px; }

.reading-progress {
  position: fixed; top: var(--nav-h); left: 0; z-index: 101;
  width: 0; height: 2px; background: var(--cyan-400);
  box-shadow: 0 0 14px var(--cyan-500); pointer-events: none;
}

main { min-height: 80vh; }
.shell { width: var(--content); margin-inline: auto; }
.reading { max-width: var(--reading); }

.hero {
  min-height: 100svh; position: relative; overflow: hidden; isolation: isolate;
  display: grid; align-items: end; padding: calc(var(--nav-h) + 80px) 0 76px;
  border-bottom: 1px solid var(--hairline);
}
.hero--image::before {
  content: ''; position: absolute; inset: 0; z-index: -2;
  background-image: var(--hero-image);
  background-size: cover; background-position: center;
  filter: saturate(.95) contrast(1.04);
}
.hero--image::after {
  content: ''; position: absolute; inset: 0; z-index: -1;
  background:
    linear-gradient(90deg, rgba(2, 7, 13, .98) 0%, rgba(2, 7, 13, .88) 32%, rgba(2, 7, 13, .18) 65%, rgba(2, 7, 13, .18)),
    linear-gradient(0deg, var(--ice-950), transparent 35%, rgba(2, 7, 13, .15));
}
.hero-content { max-width: 810px; position: relative; z-index: 2; }
.eyebrow {
  display: flex; align-items: center; gap: 12px; margin: 0 0 24px;
  color: var(--cyan-400); font: 500 11px/1.3 var(--mono);
  letter-spacing: .16em; text-transform: uppercase;
}
.eyebrow::before { content: ''; width: 38px; height: 1px; background: currentColor; box-shadow: 0 0 8px currentColor; }
.hero h1, .page-hero h1 {
  margin: 0; max-width: 960px;
  font-size: clamp(48px, 7.8vw, 126px); font-weight: 300; line-height: .91;
  letter-spacing: -.045em; text-wrap: balance;
}
.hero h1 em, .page-hero h1 em { font-style: normal; color: var(--cyan-300); text-shadow: 0 0 42px rgba(94, 229, 255, .2); }
.hero-deck {
  margin: 30px 0 0; max-width: 650px; color: var(--ink-soft);
  font-size: clamp(18px, 2vw, 24px); line-height: 1.45; font-weight: 300;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 38px; }
.button {
  min-height: 48px; padding: 13px 18px; display: inline-flex; align-items: center; gap: 26px;
  border: 1px solid var(--hairline-strong); text-decoration: none;
  font: 500 12px/1 var(--mono); letter-spacing: .08em; text-transform: uppercase;
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 12px 100%, 0 calc(100% - 12px));
  background: rgba(6, 25, 39, .72); transition: .25s var(--ease);
}
.button::after { content: '↗'; font-size: 18px; color: var(--cyan-400); }
.button:hover { color: var(--ice-950); background: var(--cyan-300); border-color: var(--cyan-300); transform: translateY(-2px); }
.button:hover::after { color: var(--ice-950); }
.button--ghost { background: transparent; }
.hero-meta {
  position: absolute; right: 0; bottom: 0; display: grid; grid-template-columns: repeat(3, minmax(120px, 1fr));
  width: min(560px, 42vw); border-top: 1px solid var(--hairline); border-left: 1px solid var(--hairline);
}
.hero-meta div { min-height: 92px; padding: 16px; border-right: 1px solid var(--hairline); background: rgba(2, 9, 16, .64); }
.hero-meta strong { display: block; color: var(--cyan-300); font: 400 26px/1 var(--mono); }
.hero-meta span { color: var(--muted); font: 400 10px/1.4 var(--mono); text-transform: uppercase; letter-spacing: .08em; }

.page-hero {
  min-height: 68svh; padding: calc(var(--nav-h) + 100px) 0 80px;
  display: grid; align-items: end; position: relative; overflow: hidden;
  border-bottom: 1px solid var(--hairline);
}
.page-hero::before {
  content: attr(data-ghost); position: absolute; z-index: -1; right: -2vw; top: 10vh;
  color: rgba(108, 224, 248, .035); font: 300 clamp(120px, 26vw, 420px)/1 var(--mono);
  letter-spacing: -.1em;
}
.page-hero .hero-deck { max-width: 780px; }

.section { padding: 112px 0; position: relative; border-bottom: 1px solid var(--hairline); }
.section--tight { padding: 72px 0; }
.section--deep { padding: 150px 0; }
.section--image {
  min-height: 78svh; display: grid; align-items: end; overflow: hidden;
  background-size: cover; background-position: center;
}
.section--image::before { content: ''; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(2,7,13,.95), rgba(2,7,13,.45) 55%, rgba(2,7,13,.15)), linear-gradient(0deg, var(--ice-950), transparent 50%); }
.section--image > .shell { position: relative; z-index: 1; }

.section-head {
  display: grid; grid-template-columns: minmax(180px, .45fr) minmax(0, 1fr); gap: 64px;
  margin-bottom: 64px; align-items: start;
}
.section-kicker { color: var(--cyan-400); font: 500 11px/1.3 var(--mono); letter-spacing: .14em; text-transform: uppercase; }
.section-kicker b { display: block; color: var(--muted); font-weight: 400; margin-top: 8px; }
.section-title { margin: 0; font-size: clamp(38px, 5.1vw, 82px); font-weight: 300; line-height: 1.02; letter-spacing: -.035em; text-wrap: balance; }
.section-lead { color: var(--ink-soft); max-width: 850px; font-size: clamp(18px, 2vw, 24px); line-height: 1.5; font-weight: 300; }

.chapter-grid { display: grid; grid-template-columns: 1.35fr .65fr; gap: 1px; background: var(--hairline); border: 1px solid var(--hairline); }
.chapter-main, .chapter-side { background: var(--ice-925); padding: clamp(28px, 5vw, 72px); }
.chapter-main h3 { margin: 0 0 24px; font-size: clamp(30px, 4vw, 58px); font-weight: 300; line-height: 1.08; }
.chapter-main p { color: var(--ink-soft); font-size: 18px; max-width: 760px; }
.chapter-side { display: flex; flex-direction: column; justify-content: space-between; }
.chapter-code { color: var(--cyan-400); font: 400 12px/1.6 var(--mono); text-transform: uppercase; letter-spacing: .08em; }
.chapter-link { margin-top: 48px; color: var(--ink); text-decoration: none; font: 500 12px/1 var(--mono); }
.chapter-link::after { content: ' →'; color: var(--cyan-400); }

.stats-band { display: grid; grid-template-columns: repeat(4, 1fr); border: 1px solid var(--hairline); }
.stat { min-height: 180px; padding: 24px; border-right: 1px solid var(--hairline); display: flex; flex-direction: column; justify-content: space-between; background: rgba(5,17,28,.72); }
.stat:last-child { border-right: 0; }
.stat strong { color: var(--cyan-300); font: 300 clamp(38px, 5vw, 76px)/.95 var(--mono); letter-spacing: -.06em; }
.stat span { max-width: 210px; color: var(--muted); font-size: 13px; line-height: 1.4; }
.stat small { color: var(--cyan-400); font: 400 10px/1.3 var(--mono); text-transform: uppercase; }

.spectrum { position: relative; padding: 40px 0 8px; }
.spectrum-line { position: absolute; top: 72px; left: 0; right: 0; height: 1px; background: linear-gradient(90deg, var(--blue-500), var(--cyan-300)); box-shadow: 0 0 18px rgba(67,221,252,.4); }
.spectrum-items { display: grid; grid-template-columns: repeat(6, 1fr); gap: 14px; position: relative; }
.spectrum-item { padding-top: 76px; position: relative; }
.spectrum-item::before { content: ''; position: absolute; top: 26px; left: 0; width: 12px; height: 12px; background: var(--ice-950); border: 2px solid var(--cyan-400); transform: rotate(45deg); }
.spectrum-item b { display: block; margin-bottom: 9px; font: 500 12px/1.25 var(--mono); color: var(--ink); }
.spectrum-item span { display: block; color: var(--muted); font-size: 12px; line-height: 1.45; }

.timeline { position: relative; }
.timeline::before { content: ''; position: absolute; left: 154px; top: 0; bottom: 0; width: 1px; background: var(--hairline-strong); }
.timeline-entry { display: grid; grid-template-columns: 120px 1fr; gap: 70px; min-height: 190px; padding-bottom: 56px; position: relative; }
.timeline-entry::before { content: ''; position: absolute; top: 7px; left: 148px; width: 11px; height: 11px; background: var(--ice-950); border: 2px solid var(--cyan-400); transform: rotate(45deg); }
.timeline-year { font: 400 24px/1 var(--mono); color: var(--cyan-300); text-align: right; }
.timeline-body { max-width: 930px; }
.timeline-body h3 { margin: 0 0 10px; font-size: 27px; line-height: 1.2; font-weight: 400; }
.timeline-body p { margin: 0; color: var(--ink-soft); font-size: 16px; }
.timeline-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
.tag { border: 1px solid var(--hairline); color: var(--muted); padding: 5px 8px; font: 400 10px/1 var(--mono); text-transform: uppercase; letter-spacing: .06em; }

.taxonomy { display: grid; grid-template-columns: repeat(12, 1fr); gap: 1px; background: var(--hairline); border: 1px solid var(--hairline); }
.tech-panel { grid-column: span 4; min-height: 330px; padding: 28px; background: var(--ice-925); position: relative; overflow: hidden; }
.tech-panel:nth-child(1), .tech-panel:nth-child(4), .tech-panel:nth-child(5) { grid-column: span 8; }
.tech-panel::after { content: attr(data-index); position: absolute; right: 18px; bottom: -20px; color: rgba(85,213,243,.05); font: 300 120px/1 var(--mono); }
.tech-panel h3 { margin: 42px 0 14px; font-size: 28px; font-weight: 400; line-height: 1.15; }
.tech-panel p { max-width: 560px; color: var(--muted); }
.tech-panel .tech-fixed { color: var(--cyan-400); font: 500 10px/1.5 var(--mono); letter-spacing: .08em; text-transform: uppercase; }
.tech-panel .meter { margin-top: 30px; height: 3px; background: var(--ice-800); }
.tech-panel .meter i { display: block; width: var(--value); height: 100%; background: var(--cyan-400); box-shadow: 0 0 12px var(--cyan-500); }

.data-flow { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--hairline); border: 1px solid var(--hairline); }
.flow-node { min-height: 210px; padding: 24px; background: var(--ice-925); position: relative; }
.flow-node:not(:last-child)::after { content: '→'; position: absolute; top: 50%; right: -14px; z-index: 2; color: var(--cyan-300); font: 300 25px/1 var(--mono); }
.flow-node small { color: var(--cyan-400); font: 400 10px/1 var(--mono); }
.flow-node strong { display: block; margin-top: 62px; font: 400 21px/1.2 var(--mono); }
.flow-node p { color: var(--muted); font-size: 13px; }

.company-table { border-top: 1px solid var(--hairline); }
.company-row {
  display: grid; grid-template-columns: 1.15fr .9fr 1.3fr .65fr; gap: 24px; align-items: start;
  padding: 28px 0; border-bottom: 1px solid var(--hairline);
}
.company-name { font-size: 24px; font-weight: 400; }
.company-name small { display: block; color: var(--muted); font: 400 10px/1.4 var(--mono); margin-top: 6px; text-transform: uppercase; }
.company-row p { margin: 0; color: var(--ink-soft); font-size: 14px; }
.status { justify-self: end; border: 1px solid currentColor; padding: 6px 8px; color: var(--muted); font: 500 9px/1 var(--mono); text-transform: uppercase; letter-spacing: .06em; }
.status--live { color: var(--success); }
.status--research { color: var(--cyan-400); }
.status--reported { color: var(--warning); }
.status--closed { color: var(--danger); }

.compare-matrix { overflow-x: auto; border: 1px solid var(--hairline); }
.compare-matrix table { width: 100%; min-width: 900px; border-collapse: collapse; background: var(--ice-925); }
.compare-matrix th, .compare-matrix td { padding: 18px 16px; border-bottom: 1px solid var(--hairline); border-right: 1px solid var(--hairline); text-align: left; vertical-align: top; }
.compare-matrix th { color: var(--cyan-300); font: 500 10px/1.35 var(--mono); text-transform: uppercase; letter-spacing: .06em; background: var(--ice-850); }
.compare-matrix td { color: var(--ink-soft); font-size: 13px; }
.compare-matrix td:first-child { color: var(--ink); font-weight: 500; }

.myth-list { border-top: 1px solid var(--hairline); }
.myth { border-bottom: 1px solid var(--hairline); }
.myth button { width: 100%; min-height: 86px; padding: 24px 0; border: 0; background: transparent; display: grid; grid-template-columns: 60px 1fr auto; align-items: center; gap: 24px; text-align: left; cursor: pointer; }
.myth-num { color: var(--cyan-400); font: 400 12px/1 var(--mono); }
.myth-title { font-size: clamp(20px, 2.4vw, 32px); font-weight: 300; }
.myth-toggle { font: 300 24px/1 var(--mono); color: var(--cyan-400); transition: transform .2s; }
.myth[open] .myth-toggle { transform: rotate(45deg); }
.myth-body { padding: 0 0 34px 84px; display: grid; grid-template-columns: 1fr 1fr; gap: 36px; color: var(--ink-soft); }
.myth-body strong { display: block; color: var(--danger); font: 500 10px/1 var(--mono); text-transform: uppercase; margin-bottom: 10px; }
.myth-body div:last-child strong { color: var(--success); }

.risk-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; border: 1px solid var(--hairline); background: var(--hairline); }
.risk { min-height: 270px; padding: 26px; background: var(--ice-925); }
.risk small { color: var(--warning); font: 500 10px/1 var(--mono); }
.risk h3 { margin: 54px 0 12px; font-size: 24px; font-weight: 400; }
.risk p { color: var(--muted); font-size: 14px; }

.citation { color: var(--cyan-300); font: 500 10px/1 var(--mono); text-decoration: none; vertical-align: super; margin-left: 2px; }
.citation:hover { color: #fff; text-shadow: 0 0 10px var(--cyan-400); }
.source-list { list-style: none; padding: 0; margin: 0; border-top: 1px solid var(--hairline); }
.source-item { display: grid; grid-template-columns: 64px 1fr 140px; gap: 24px; padding: 24px 0; border-bottom: 1px solid var(--hairline); }
.source-id { color: var(--cyan-400); font: 400 13px/1 var(--mono); }
.source-item h3 { margin: 0 0 8px; font-size: 18px; font-weight: 400; }
.source-item a { color: var(--muted); word-break: break-all; font: 400 11px/1.5 var(--mono); }
.source-item p { color: var(--ink-soft); margin: 9px 0 0; font-size: 13px; }
.source-type { justify-self: end; color: var(--muted); font: 400 9px/1.4 var(--mono); text-transform: uppercase; text-align: right; }
.source-toolbar { display: grid; grid-template-columns: 1fr auto; gap: 16px; margin-bottom: 34px; }
.source-search { width: 100%; min-height: 50px; padding: 0 18px; color: var(--ink); border: 1px solid var(--hairline-strong); border-radius: 0; outline: 0; background: var(--ice-925); }
.source-search:focus { border-color: var(--cyan-400); box-shadow: inset 0 -2px var(--cyan-400); }
.source-count { display: grid; place-items: center; min-width: 100px; border: 1px solid var(--hairline); color: var(--cyan-300); font: 400 11px/1 var(--mono); }

.callout { padding: 34px; border: 1px solid var(--hairline-strong); background: linear-gradient(110deg, rgba(26,109,147,.12), transparent); position: relative; }
.callout::before { content: ''; position: absolute; width: 9px; height: 9px; top: -1px; left: -1px; background: var(--cyan-400); box-shadow: 0 0 12px var(--cyan-400); }
.callout h3 { margin: 0 0 14px; font-size: 28px; font-weight: 300; }
.callout p { margin: 0; color: var(--ink-soft); font-size: 17px; }

.future-paths { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.future-path { min-height: 480px; border-top: 1px solid var(--cyan-400); padding: 28px 0; display: flex; flex-direction: column; }
.future-path .prob { color: var(--cyan-400); font: 400 11px/1 var(--mono); }
.future-path h3 { margin: 80px 0 18px; font-size: 34px; font-weight: 300; line-height: 1.08; }
.future-path p { color: var(--muted); }
.future-path ul { margin: auto 0 0; padding: 0; list-style: none; border-top: 1px solid var(--hairline); }
.future-path li { padding: 10px 0; border-bottom: 1px solid var(--hairline); color: var(--ink-soft); font-size: 13px; }

.footer { padding: 64px 0 32px; background: #01050a; border-top: 1px solid var(--hairline); }
.footer-grid { display: grid; grid-template-columns: 1fr 2fr; gap: 70px; }
.footer-title { font-size: 30px; font-weight: 300; line-height: 1.1; }
.footer-nav { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.footer-nav h4 { margin: 0 0 14px; color: var(--muted); font: 500 9px/1 var(--mono); text-transform: uppercase; letter-spacing: .1em; }
.footer-nav a { display: block; padding: 4px 0; color: var(--ink-soft); text-decoration: none; font-size: 13px; }
.footer-nav a:hover { color: var(--cyan-300); }
.footer-bottom { margin-top: 56px; padding-top: 22px; border-top: 1px solid var(--hairline); display: flex; justify-content: space-between; gap: 20px; color: var(--muted); font: 400 9px/1.5 var(--mono); text-transform: uppercase; }

.reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.is-visible { opacity: 1; transform: none; }
#ice-particles { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; z-index: 1; opacity: .48; }

@media (max-width: 1180px) {
  :root { --content: min(100% - 40px, 1120px); }
  .nav-shell { grid-template-columns: 220px 1fr auto; }
  .primary-nav a { padding-inline: 7px; font-size: 10px; }
  .hero-meta { display: none; }
  .spectrum-items { grid-template-columns: repeat(3, 1fr); row-gap: 32px; }
  .spectrum-line { display: none; }
  .spectrum-item { padding-top: 26px; border-top: 1px solid var(--hairline-strong); }
  .spectrum-item::before { top: -6px; }
}

@media (max-width: 920px) {
  :root { --nav-h: 64px; }
  .nav-shell { grid-template-columns: 1fr auto; }
  .nav-index { display: none; }
  .nav-toggle { display: block; }
  .primary-nav {
    position: fixed; left: 0; right: 0; top: var(--nav-h); padding: 12px 20px 26px;
    display: none; flex-direction: column; background: rgba(2,9,16,.98); border-bottom: 1px solid var(--hairline);
  }
  body.nav-open .primary-nav { display: flex; }
  .primary-nav a { padding: 14px 4px; font-size: 12px; }
  .hero { min-height: 92svh; }
  .hero--image::after { background: linear-gradient(90deg, rgba(2,7,13,.96), rgba(2,7,13,.55)), linear-gradient(0deg, var(--ice-950), transparent 50%); }
  .section-head { grid-template-columns: 1fr; gap: 20px; }
  .chapter-grid { grid-template-columns: 1fr; }
  .stats-band { grid-template-columns: 1fr 1fr; }
  .stat:nth-child(2) { border-right: 0; }
  .stat:nth-child(-n+2) { border-bottom: 1px solid var(--hairline); }
  .taxonomy { grid-template-columns: 1fr 1fr; }
  .tech-panel, .tech-panel:nth-child(1), .tech-panel:nth-child(4), .tech-panel:nth-child(5) { grid-column: auto; }
  .data-flow { grid-template-columns: 1fr 1fr; }
  .flow-node:nth-child(2)::after { display: none; }
  .company-row { grid-template-columns: 1fr 1fr; }
  .status { justify-self: start; }
  .risk-grid { grid-template-columns: 1fr 1fr; }
  .source-item { grid-template-columns: 48px 1fr; }
  .source-type { grid-column: 2; justify-self: start; text-align: left; }
  .footer-grid { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  :root { --content: calc(100% - 28px); }
  .brand .brand-copy { display: none; }
  .hero { padding-bottom: 48px; }
  .hero h1, .page-hero h1 { font-size: clamp(46px, 14.2vw, 76px); }
  .hero-deck { font-size: 17px; }
  .button { width: 100%; justify-content: space-between; }
  .page-hero { min-height: 60svh; padding-bottom: 56px; }
  .section { padding: 76px 0; }
  .section--deep { padding: 96px 0; }
  .stats-band { grid-template-columns: 1fr; }
  .stat { border-right: 0; border-bottom: 1px solid var(--hairline); min-height: 150px; }
  .spectrum-items { grid-template-columns: 1fr 1fr; }
  .timeline::before { left: 14px; }
  .timeline-entry { grid-template-columns: 1fr; gap: 16px; padding-left: 44px; }
  .timeline-entry::before { left: 8px; }
  .timeline-year { text-align: left; }
  .taxonomy, .data-flow, .risk-grid { grid-template-columns: 1fr; }
  .flow-node:not(:last-child)::after { content: '↓'; top: auto; right: 24px; bottom: -14px; }
  .company-row { grid-template-columns: 1fr; gap: 12px; }
  .myth button { grid-template-columns: 40px 1fr auto; gap: 10px; }
  .myth-body { padding-left: 50px; grid-template-columns: 1fr; }
  .future-paths { grid-template-columns: 1fr; }
  .future-path { min-height: auto; }
  .future-path h3 { margin-top: 46px; }
  .future-path ul { margin-top: 40px; }
  .source-toolbar { grid-template-columns: 1fr; }
  .source-count { min-height: 44px; }
  .footer-nav { grid-template-columns: 1fr 1fr; }
  .footer-bottom { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .reveal { opacity: 1; transform: none; }
  #ice-particles { display: none; }
}