:root {
  --blue-ink: #08192f;
  --blue-ink-2: #102b4c;
  --blue-text: #16324f;
  --blue-muted: #617289;
  --blue-line: #dce6f1;
  --blue-soft: #f5f8fc;
  --blue-sky: #dff4ff;
  --blue-primary: #215cff;
  --blue-primary-2: #6c52ff;
  --blue-cyan: #22c8ee;
  --blue-mint: #3ce0b5;
  --blue-night: #061326;
  --blue-radius: 22px;
  --blue-shadow: 0 28px 80px rgba(15, 45, 83, .14);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 90px; }
body {
  margin: 0;
  color: var(--blue-text);
  background: #fff;
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.58;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
body.menu-visible { overflow: hidden; }
a { color: inherit; text-decoration: none; }
button, input, select { font: inherit; }
button { color: inherit; }
img { display: block; max-width: 100%; }
::selection { color: #fff; background: #315dff; }

.exp-skip {
  position: fixed;
  z-index: 999;
  top: -52px;
  left: 16px;
  padding: 9px 14px;
  border-radius: 9px;
  color: #fff;
  background: var(--blue-night);
  transition: top .18s ease;
}
.exp-skip:focus { top: 12px; }

.exp-nav {
  position: fixed;
  z-index: 90;
  inset: 0 0 auto;
  height: 72px;
  display: flex;
  align-items: center;
  padding: 0 max(24px, calc((100vw - 1220px) / 2));
  border-bottom: 1px solid rgba(203, 219, 236, .72);
  background: rgba(255, 255, 255, .86);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}
.exp-brand { display: inline-flex; align-items: center; gap: 8px; color: var(--blue-ink); font-weight: 700; letter-spacing: 0; }
.exp-brand-mark {
  width: 16px;
  height: 20px;
  flex: 0 0 auto;
  background: currentColor;
  -webkit-mask: url("language-blue-mark.svg") center / contain no-repeat;
  mask: url("language-blue-mark.svg") center / contain no-repeat;
}
.exp-brand-mark::before,
.exp-brand-mark::after {
  display: none;
}
.exp-brand span { font-size: 19px; }
.exp-brand small { display: none; }
.exp-links { display: flex; align-items: center; gap: 4px; margin-left: 42px; }
.exp-links a { padding: 9px 11px; border-radius: 9px; color: #3d536d; font-size: 14px; font-weight: 650; }
.exp-links a:hover, .exp-links a[aria-current="page"] { color: #123b8e; background: #edf3ff; }
.exp-actions { display: flex; align-items: center; gap: 9px; margin-left: auto; }
.exp-actions a { font-size: 13px; font-weight: 700; }
.exp-actions .exp-docs { padding: 9px 11px; color: #38506b; }
.exp-actions .exp-launch { padding: 10px 15px; border-radius: 999px; color: #fff; background: var(--blue-ink); box-shadow: 0 8px 25px rgba(8,25,47,.18); }
.exp-menu { display: none; width: 42px; height: 42px; margin-left: auto; border: 0; border-radius: 11px; background: #f0f4f9; cursor: pointer; }
.exp-menu i, .exp-menu::before, .exp-menu::after { content: ""; display: block; width: 19px; height: 2px; margin: 4px auto; border-radius: 99px; background: var(--blue-ink); }

.exp-main { overflow: hidden; padding-top: 72px; }
.exp-container { width: min(1220px, calc(100% - 48px)); margin: 0 auto; }
.exp-narrow { width: min(860px, calc(100% - 48px)); margin: 0 auto; }
.exp-section { padding: 112px 0; }
.exp-section.compact { padding: 78px 0; }
.exp-section.soft { background: var(--blue-soft); }
.exp-section.dark { color: #fff; background: var(--blue-night); }
.exp-section-head { display: flex; align-items: end; justify-content: space-between; gap: 40px; margin-bottom: 42px; }
.exp-section-head > div { max-width: 760px; }
.exp-section-head > p { max-width: 430px; margin: 0 0 5px; color: var(--blue-muted); }
.dark .exp-section-head > p { color: #aabbd0; }
.exp-kicker { margin: 0 0 14px; color: #285ff0; font-size: 12px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.dark .exp-kicker { color: #7fe3ff; }
.exp-title { margin: 0; color: var(--blue-ink); font-size: clamp(39px, 5vw, 66px); line-height: 1.03; letter-spacing: -.052em; }
.dark .exp-title { color: #fff; }
.exp-section h2 { margin: 0; color: var(--blue-ink); font-size: clamp(32px, 4vw, 53px); line-height: 1.07; letter-spacing: -.045em; }
.dark h2 { color: #fff; }
.exp-lede { max-width: 760px; margin: 22px 0 0; color: #536a84; font-size: 20px; line-height: 1.55; }
.dark .exp-lede { color: #aec1d7; }
.exp-mini { color: var(--blue-muted); font-size: 13px; }

.exp-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  min-height: 48px;
  padding: 11px 19px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 760;
  transition: transform .18s ease, box-shadow .18s ease, background .18s ease;
}
.exp-button:hover { transform: translateY(-2px); }
.exp-button.primary { color: #fff; background: linear-gradient(110deg, var(--blue-primary), var(--blue-primary-2)); box-shadow: 0 14px 35px rgba(54, 76, 255, .28); }
.exp-button.secondary { border-color: #cdd9e6; color: var(--blue-ink); background: rgba(255,255,255,.84); }
.exp-button.secondary:hover { box-shadow: 0 10px 30px rgba(15,45,83,.1); }
.exp-button.dark-button { color: var(--blue-night); background: #fff; }
.exp-button.text-button { min-height: auto; padding: 7px 0; border-radius: 0; color: #215cff; }
.exp-arrow { font-size: 18px; line-height: 1; }
.exp-button-row { display: flex; flex-wrap: wrap; gap: 11px; margin-top: 30px; }

/* Hero */
.exp-hero {
  position: relative;
  min-height: 790px;
  display: flex;
  align-items: center;
  color: #fff;
  background:
    radial-gradient(circle at 82% 30%, rgba(43, 185, 255, .22), transparent 29%),
    radial-gradient(circle at 17% 15%, rgba(110, 79, 255, .22), transparent 31%),
    linear-gradient(150deg, #07162c 0%, #0b2344 46%, #07172e 100%);
}
.exp-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  opacity: .28;
  background-image:
    linear-gradient(rgba(112,177,255,.13) 1px, transparent 1px),
    linear-gradient(90deg, rgba(112,177,255,.13) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(to bottom, #000, transparent 88%);
}
.exp-hero-inner { position: relative; display: grid; grid-template-columns: minmax(0, .95fr) minmax(510px, 1.05fr); align-items: center; gap: 44px; padding: 84px 0 104px; }
.exp-hero-copy { position: relative; z-index: 2; }
.exp-hero .exp-kicker { color: #79e5ff; }
.exp-hero h1 { max-width: 720px; margin: 0; color: #fff; font-size: clamp(54px, 6.8vw, 89px); line-height: .98; letter-spacing: -.062em; }
.exp-hero .hero-gradient { background: linear-gradient(90deg, #fff 10%, #9deaff 52%, #b8adff 95%); -webkit-background-clip: text; background-clip: text; color: transparent; }
.exp-hero p { max-width: 675px; margin: 27px 0 0; color: #b9cbe0; font-size: clamp(18px, 2vw, 22px); line-height: 1.5; }
.exp-hero-note { display: flex; align-items: center; gap: 9px; margin-top: 24px; color: #8299b4; font-size: 12px; }
.exp-hero-note i { width: 7px; height: 7px; border-radius: 50%; background: var(--blue-mint); box-shadow: 0 0 0 5px rgba(60,224,181,.12); }

.reality-stage { position: relative; min-height: 560px; perspective: 900px; }
.stage-glow { position: absolute; inset: 15% 5% 5%; border-radius: 50%; background: radial-gradient(circle, rgba(73,195,255,.23), rgba(84,77,255,.08) 45%, transparent 72%); filter: blur(14px); }
.reality-grid { position: absolute; inset: 0; }
.reality-node { position: absolute; width: 164px; min-height: 154px; display: flex; flex-direction: column; justify-content: flex-end; padding: 17px; border: 1px solid rgba(168,222,255,.44); border-radius: 20px; color: #fff; background: linear-gradient(145deg, rgba(255,255,255,.17), rgba(67,151,255,.055)); box-shadow: inset 0 1px rgba(255,255,255,.46), 0 25px 45px rgba(0,5,18,.28); backdrop-filter: blur(10px); transform: rotateX(4deg) rotateY(-6deg); transition: transform .25s ease, border-color .25s ease, box-shadow .25s ease; }
.reality-node::before, .reality-node::after { content: ""; position: absolute; pointer-events: none; }
.reality-node::before { inset: 9px; border: 1px solid rgba(146,220,255,.19); border-radius: 14px; }
.reality-node::after { top: 12px; right: 14px; width: 34px; height: 34px; border-top: 1px solid rgba(255,255,255,.48); border-right: 1px solid rgba(255,255,255,.48); transform: skewY(-19deg); }
.reality-node:hover { border-color: rgba(156,233,255,.85); box-shadow: inset 0 1px rgba(255,255,255,.6), 0 29px 60px rgba(0,10,30,.36), 0 0 34px rgba(45,181,255,.13); transform: translateY(-7px) rotateX(2deg) rotateY(-3deg); }
.reality-node .node-icon { position: absolute; top: 19px; left: 18px; width: 35px; height: 35px; display: grid; place-items: center; border: 1px solid rgba(255,255,255,.27); border-radius: 11px; color: #9feaff; background: rgba(7,24,49,.38); font-size: 16px; }
.reality-node small { color: #8ba5c0; font-size: 10px; font-weight: 750; letter-spacing: .09em; text-transform: uppercase; }
.reality-node strong { display: block; margin-top: 3px; font-size: 15px; letter-spacing: -.015em; }
.reality-node em { display: flex; align-items: center; gap: 6px; margin-top: 8px; color: #9eb5cb; font-size: 10px; font-style: normal; }
.reality-node em::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--blue-mint); }
.reality-node.main { z-index: 3; left: 34%; top: 25%; width: 210px; min-height: 205px; border-color: rgba(154,225,255,.62); background: linear-gradient(145deg, rgba(255,255,255,.22), rgba(46,116,255,.11)); }
.reality-node.policy { left: 3%; top: 8%; }
.reality-node.mandate { right: 2%; top: 2%; }
.reality-node.order { left: 4%; bottom: 4%; }
.reality-node.payment { right: 0; bottom: 8%; }
.stage-line { position: absolute; z-index: 1; height: 1px; transform-origin: 0 50%; background: linear-gradient(90deg, rgba(77,205,255,.1), rgba(92,220,255,.72), rgba(108,82,255,.16)); box-shadow: 0 0 8px rgba(77,205,255,.4); }
.stage-line.one { width: 190px; left: 25%; top: 27%; transform: rotate(25deg); }
.stage-line.two { width: 180px; left: 56%; top: 31%; transform: rotate(-30deg); }
.stage-line.three { width: 205px; left: 26%; top: 60%; transform: rotate(-18deg); }
.stage-line.four { width: 200px; left: 55%; top: 61%; transform: rotate(22deg); }
.stage-event { position: absolute; z-index: 5; left: 13%; top: 42%; width: 12px; height: 12px; border: 2px solid #fff; border-radius: 50%; background: #43d7ff; box-shadow: 0 0 0 8px rgba(67,215,255,.13), 0 0 28px #43d7ff; animation: eventOrbit 8s ease-in-out infinite; }
@keyframes eventOrbit {
  0%, 8% { transform: translate(0, 0); opacity: 0; }
  15% { opacity: 1; }
  43% { transform: translate(195px, -53px); }
  68% { transform: translate(357px, 66px); }
  88% { opacity: 1; }
  100% { transform: translate(357px, 66px); opacity: 0; }
}
.stage-caption { position: absolute; z-index: 6; left: 24%; bottom: -12px; width: 62%; padding: 13px 16px; border: 1px solid rgba(151,216,255,.18); border-radius: 13px; color: #a9bfd6; background: rgba(4,18,37,.72); font-size: 12px; backdrop-filter: blur(12px); }
.stage-caption strong { color: #fff; }

.exp-proofline { position: relative; z-index: 3; margin-top: -44px; }
.proofline-inner { display: grid; grid-template-columns: repeat(4,1fr); overflow: hidden; border: 1px solid rgba(206,222,239,.8); border-radius: 18px; background: rgba(255,255,255,.96); box-shadow: var(--blue-shadow); }
.proofline-item { padding: 22px 23px; border-right: 1px solid var(--blue-line); }
.proofline-item:last-child { border-right: 0; }
.proofline-item strong { display: block; margin-bottom: 3px; color: var(--blue-ink); font-size: 14px; }
.proofline-item span { color: var(--blue-muted); font-size: 12px; }

/* Narrative components */
.exp-three { display: grid; grid-template-columns: repeat(3,1fr); gap: 18px; }
.exp-four { display: grid; grid-template-columns: repeat(4,1fr); gap: 16px; }
.exp-two { display: grid; grid-template-columns: repeat(2,1fr); gap: 22px; }
.exp-card { position: relative; padding: 28px; overflow: hidden; border: 1px solid var(--blue-line); border-radius: 20px; background: #fff; box-shadow: 0 8px 34px rgba(15,45,83,.055); }
a.exp-card { transition: transform .18s ease, border-color .18s ease, box-shadow .18s ease; }
a.exp-card:hover { transform: translateY(-5px); border-color: #b9cdf5; box-shadow: 0 20px 50px rgba(15,45,83,.11); }
.exp-card.dark-card { border-color: rgba(163,197,232,.17); background: rgba(255,255,255,.045); box-shadow: none; }
.exp-card .card-number { display: inline-grid; width: 37px; height: 37px; place-items: center; margin-bottom: 34px; border: 1px solid #d4e3ff; border-radius: 11px; color: #215cff; background: #f0f5ff; font-size: 12px; font-weight: 800; }
.dark-card .card-number { border-color: rgba(105,207,255,.22); color: #83e6ff; background: rgba(66,176,255,.08); }
.exp-card h3 { margin: 0 0 11px; color: var(--blue-ink); font-size: 21px; line-height: 1.2; letter-spacing: -.025em; }
.dark-card h3 { color: #fff; }
.exp-card p { margin: 0; color: var(--blue-muted); font-size: 14px; }
.dark-card p { color: #9eb2ca; }
.exp-card .card-link { display: inline-block; margin-top: 24px; color: #215cff; font-size: 13px; font-weight: 750; }
.dark-card .card-link { color: #79dcff; }
.card-label { display: inline-flex; align-items: center; gap: 7px; margin-bottom: 20px; color: #285ff0; font-size: 11px; font-weight: 800; letter-spacing: .09em; text-transform: uppercase; }
.card-label::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: currentColor; }

.exp-problem { display: grid; grid-template-columns: .78fr 1.22fr; align-items: start; gap: 76px; }
.problem-quote { position: sticky; top: 110px; }
.problem-quote p { margin: 0; color: var(--blue-ink); font-size: clamp(30px, 3.5vw, 49px); line-height: 1.13; letter-spacing: -.042em; }
.problem-list { display: grid; gap: 12px; }
.problem-row { display: grid; grid-template-columns: 44px 1fr; gap: 17px; padding: 22px 0; border-bottom: 1px solid var(--blue-line); }
.problem-row:last-child { border-bottom: 0; }
.problem-row b { width: 35px; height: 35px; display: grid; place-items: center; border-radius: 50%; color: #215cff; background: #eef4ff; font-size: 12px; }
.problem-row strong { display: block; margin-bottom: 5px; color: var(--blue-ink); font-size: 17px; }
.problem-row span { color: var(--blue-muted); font-size: 14px; }

.concept-feature { display: grid; grid-template-columns: minmax(0,.88fr) minmax(0,1.12fr); align-items: center; gap: 72px; }
.concept-feature.reverse { grid-template-columns: minmax(0,1.12fr) minmax(0,.88fr); }
.concept-feature.reverse .concept-copy { order: 2; }
.concept-copy h2 { margin-bottom: 20px; }
.concept-copy p { color: var(--blue-muted); font-size: 17px; }
.concept-points { display: grid; gap: 11px; margin: 25px 0 0; padding: 0; list-style: none; }
.concept-points li { display: flex; gap: 11px; color: #36506c; font-size: 14px; }
.concept-points li::before { content: "✓"; flex: 0 0 22px; height: 22px; display: grid; place-items: center; border-radius: 50%; color: #1460d2; background: #eaf3ff; font-size: 11px; font-weight: 900; }

.policy-visual, .mandate-visual, .network-visual { position: relative; min-height: 460px; border: 1px solid #d7e5f4; border-radius: 28px; background: radial-gradient(circle at 50% 38%, #fff, #eff6fd 67%, #e8f1fa); box-shadow: inset 0 1px #fff, 0 25px 70px rgba(15,45,83,.1); overflow: hidden; }
.policy-axis { position: absolute; left: 10%; right: 10%; top: 49%; height: 2px; background: linear-gradient(90deg, #9cbfe7, #2e77ff, #9cbfe7); }
.policy-axis::before, .policy-axis::after { content: ""; position: absolute; top: -4px; width: 9px; height: 9px; border-radius: 50%; background: #2e77ff; }
.policy-axis::before { left: 0; }
.policy-axis::after { right: 0; }
.policy-node { position: absolute; width: 132px; padding: 17px; border: 1px solid rgba(51,128,255,.35); border-radius: 16px; background: rgba(255,255,255,.84); box-shadow: 0 16px 35px rgba(32,78,129,.12); backdrop-filter: blur(8px); }
.policy-node strong { display: block; color: var(--blue-ink); font-size: 13px; }
.policy-node small { color: var(--blue-muted); font-size: 10px; }
.policy-node.p0 { left: 7%; top: 20%; }
.policy-node.p1 { left: 40%; top: 13%; border-color: rgba(85,87,255,.45); }
.policy-node.p2 { right: 6%; top: 23%; }
.policy-doc { position: absolute; bottom: 8%; width: 128px; min-height: 98px; padding: 15px; border: 1px solid rgba(41,149,242,.28); border-radius: 17px; color: var(--blue-ink); background: linear-gradient(145deg, rgba(255,255,255,.9), rgba(182,228,255,.36)); box-shadow: 0 18px 38px rgba(15,45,83,.1); }
.policy-doc.a { left: 9%; }
.policy-doc.b { left: 38%; }
.policy-doc.c { right: 9%; }
.policy-doc span { display: block; color: #54708c; font-size: 10px; }
.policy-doc strong { font-size: 12px; }
.policy-pulse { position: absolute; z-index: 2; top: calc(49% - 6px); left: 10%; width: 13px; height: 13px; border: 2px solid #fff; border-radius: 50%; background: #1d77ff; box-shadow: 0 0 0 8px rgba(29,119,255,.13), 0 0 26px #2e77ff; animation: policyTravel 5.8s ease-in-out infinite; }
@keyframes policyTravel { 0%,8% { left: 10%; opacity: 0; } 15% { opacity: 1; } 75% { left: 88%; opacity: 1; } 92%,100% { left: 88%; opacity: 0; } }
.visual-note { position: absolute; top: 56%; left: 50%; transform: translateX(-50%); width: max-content; max-width: 80%; padding: 8px 11px; border-radius: 999px; color: #326190; background: rgba(255,255,255,.78); font-size: 10px; box-shadow: 0 6px 18px rgba(15,45,83,.08); }

.mandate-ring { position: absolute; left: 50%; top: 50%; width: 280px; height: 280px; border: 1px solid rgba(54,123,255,.2); border-radius: 50%; transform: translate(-50%,-50%); box-shadow: 0 0 0 40px rgba(59,145,255,.035), 0 0 0 80px rgba(59,145,255,.02); }
.mandate-core { position: absolute; z-index: 3; left: 50%; top: 50%; width: 164px; min-height: 164px; display: grid; place-items: center; padding: 22px; border: 1px solid rgba(47,131,255,.45); border-radius: 31px; text-align: center; background: linear-gradient(145deg, rgba(255,255,255,.96), rgba(167,221,255,.44)); box-shadow: 0 23px 50px rgba(15,61,112,.16); transform: translate(-50%,-50%) rotate(4deg); }
.mandate-core strong { color: var(--blue-ink); font-size: 18px; }
.mandate-core span { color: #5d7591; font-size: 11px; }
.mandate-actor { position: absolute; z-index: 4; min-width: 105px; padding: 10px 13px; border: 1px solid #d2e1f1; border-radius: 999px; color: var(--blue-ink); background: #fff; box-shadow: 0 10px 24px rgba(15,45,83,.09); font-size: 11px; font-weight: 750; }
.mandate-actor.principal { top: 12%; left: 11%; }
.mandate-actor.agent { top: 13%; right: 9%; }
.mandate-actor.resource { bottom: 12%; left: 12%; }
.mandate-actor.operation { right: 8%; bottom: 13%; color: #0a7b5c; }
.mandate-meter { position: absolute; z-index: 5; left: 50%; bottom: 13%; width: 136px; transform: translateX(-50%); }
.mandate-meter label { display: flex; justify-content: space-between; color: #5d7591; font-size: 9px; font-weight: 700; }
.mandate-meter i { display: block; height: 6px; margin-top: 5px; overflow: hidden; border-radius: 99px; background: #dce8f4; }
.mandate-meter i::after { content: ""; display: block; width: 68%; height: 100%; border-radius: inherit; background: linear-gradient(90deg, #25cba1, #2d78ff); }

.network-visual { min-height: 500px; background: radial-gradient(circle at 50% 50%, #fff, #f1f7fc 60%, #e9f1f8); }
.network-root { position: absolute; z-index: 3; left: 50%; top: 50%; width: 175px; min-height: 150px; display: grid; place-items: center; padding: 20px; border: 1px solid rgba(54,123,255,.42); border-radius: 25px; text-align: center; background: rgba(255,255,255,.9); box-shadow: 0 24px 55px rgba(15,61,112,.14); transform: translate(-50%,-50%); }
.network-root strong { display: block; color: var(--blue-ink); font-size: 17px; }
.network-root small { color: #5d7591; }
.network-satellite { position: absolute; z-index: 3; width: 130px; min-height: 98px; display: grid; place-items: center; padding: 14px; border: 1px solid rgba(47,131,255,.26); border-radius: 18px; text-align: center; color: var(--blue-ink); background: rgba(255,255,255,.85); box-shadow: 0 15px 32px rgba(15,61,112,.09); font-size: 12px; font-weight: 750; }
.network-satellite.s1 { left: 7%; top: 14%; }
.network-satellite.s2 { right: 7%; top: 12%; }
.network-satellite.s3 { right: 7%; bottom: 12%; }
.network-satellite.s4 { left: 7%; bottom: 13%; }
.network-spoke { position: absolute; z-index: 1; left: 50%; top: 50%; width: 33%; height: 1px; transform-origin: 0; background: linear-gradient(90deg,#4a8fff,rgba(74,143,255,.08)); }
.network-spoke.n1 { transform: rotate(210deg); }
.network-spoke.n2 { transform: rotate(327deg); }
.network-spoke.n3 { transform: rotate(34deg); }
.network-spoke.n4 { transform: rotate(147deg); }

.persona-card { min-height: 310px; display: flex; flex-direction: column; }
.persona-card .persona-icon { width: 50px; height: 50px; display: grid; place-items: center; margin-bottom: 58px; border: 1px solid #d7e4ff; border-radius: 15px; color: #215cff; background: linear-gradient(145deg,#fff,#eef4ff); font-weight: 850; }
.persona-card h3 { font-size: 24px; }
.persona-card .card-link { margin-top: auto; padding-top: 26px; }

.scenario-card { min-height: 385px; display: flex; flex-direction: column; padding: 0; }
.scenario-art { position: relative; height: 168px; overflow: hidden; border-bottom: 1px solid var(--blue-line); background: linear-gradient(145deg,#f3f8fe,#eaf2fb); }
.scenario-art::before, .scenario-art::after { content: ""; position: absolute; border: 1px solid rgba(62,134,255,.35); background: rgba(255,255,255,.53); transform: rotate(45deg); box-shadow: inset -10px -10px 20px rgba(62,134,255,.08); }
.scenario-art::before { width: 91px; height: 91px; left: 25%; top: 37px; border-radius: 16px; }
.scenario-art::after { width: 65px; height: 65px; right: 23%; top: 50px; border-color: rgba(108,82,255,.34); border-radius: 13px; }
.scenario-art .scenario-beam { position: absolute; left: 39%; right: 34%; top: 50%; height: 2px; background: linear-gradient(90deg,#2c8eff,#885dff); box-shadow: 0 0 16px rgba(50,137,255,.55); }
.scenario-card .scenario-copy { display: flex; flex: 1; flex-direction: column; padding: 24px; }
.scenario-card .scenario-copy .card-link { margin-top: auto; }

.stack-table { overflow: hidden; border: 1px solid rgba(153,191,228,.17); border-radius: 20px; }
.stack-row { display: grid; grid-template-columns: 210px 1fr 220px; gap: 24px; padding: 21px 24px; border-bottom: 1px solid rgba(153,191,228,.14); }
.stack-row:last-child { border-bottom: 0; }
.stack-row strong { color: #fff; }
.stack-row span { color: #aabdd2; font-size: 14px; }
.stack-row code { color: #79e1ff; font-size: 12px; }

.exp-callout { position: relative; padding: 56px; overflow: hidden; border-radius: 30px; color: #fff; background: linear-gradient(125deg,#0d2a55,#215cff 58%,#664eff); box-shadow: 0 30px 80px rgba(32,74,200,.25); }
.exp-callout::after { content: ""; position: absolute; width: 360px; height: 360px; right: -80px; top: -150px; border: 1px solid rgba(255,255,255,.16); border-radius: 50%; box-shadow: 0 0 0 55px rgba(255,255,255,.04), 0 0 0 110px rgba(255,255,255,.025); }
.exp-callout > * { position: relative; z-index: 2; }
.exp-callout h2 { max-width: 760px; color: #fff; }
.exp-callout p { max-width: 680px; color: #cfddff; }

.exp-footer { padding: 70px 0 34px; color: #b1bfd0; background: #061326; }
.footer-grid { display: grid; grid-template-columns: 1.6fr repeat(4,1fr); gap: 38px; }
.footer-brand p { max-width: 330px; color: #8296ad; font-size: 13px; }
.footer-group strong { display: block; margin-bottom: 14px; color: #fff; font-size: 12px; }
.footer-group a { display: block; margin: 8px 0; color: #93a6bc; font-size: 12px; }
.footer-group a:hover { color: #fff; }
.footer-bottom { display: flex; justify-content: space-between; gap: 20px; margin-top: 54px; padding-top: 22px; border-top: 1px solid rgba(167,194,221,.14); color: #6f849b; font-size: 11px; }

/* Inner narrative pages */
.inner-hero { position: relative; padding: 132px 0 100px; overflow: hidden; background: linear-gradient(180deg,#f6f9fe,#fff); }
.inner-hero::after { content: ""; position: absolute; width: 640px; height: 640px; right: -210px; top: -270px; border-radius: 50%; background: radial-gradient(circle,rgba(66,152,255,.17),rgba(108,82,255,.055) 48%,transparent 70%); }
.inner-hero .exp-container { position: relative; z-index: 2; }
.inner-hero .exp-title { max-width: 970px; }
.inner-hero .exp-lede { max-width: 790px; }
.path-summary { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 28px; }
.path-summary span { padding: 8px 11px; border: 1px solid #d9e5f2; border-radius: 999px; color: #526a84; background: rgba(255,255,255,.8); font-size: 11px; font-weight: 700; }
.journey { position: relative; display: grid; gap: 0; margin-top: 34px; }
.journey-step { position: relative; display: grid; grid-template-columns: 74px 1fr; gap: 20px; padding: 0 0 42px; }
.journey-step::before { content: ""; position: absolute; left: 25px; top: 50px; bottom: 0; width: 1px; background: #cbdced; }
.journey-step:last-child::before { display: none; }
.journey-step b { z-index: 2; width: 51px; height: 51px; display: grid; place-items: center; border: 1px solid #cfe0f3; border-radius: 16px; color: #215cff; background: #fff; box-shadow: 0 10px 25px rgba(15,45,83,.07); }
.journey-step h3 { margin: 2px 0 7px; color: var(--blue-ink); font-size: 20px; }
.journey-step p { max-width: 740px; margin: 0; color: var(--blue-muted); }
.detail-grid { display: grid; grid-template-columns: 290px 1fr; gap: 54px; }
.detail-nav { position: sticky; top: 108px; align-self: start; padding: 20px; border: 1px solid var(--blue-line); border-radius: 17px; background: #fff; }
.detail-nav strong { display: block; margin-bottom: 10px; color: var(--blue-ink); font-size: 12px; }
.detail-nav a { display: block; padding: 7px 8px; border-radius: 7px; color: var(--blue-muted); font-size: 12px; }
.detail-nav a:hover { color: #215cff; background: #f0f5ff; }
.detail-content section { padding: 0 0 64px; }
.detail-content h2 { margin-bottom: 17px; font-size: 35px; }
.detail-content h3 { margin: 27px 0 9px; color: var(--blue-ink); }
.detail-content p, .detail-content li { color: #536a84; }
.detail-content pre { overflow: auto; padding: 22px; border: 1px solid #173556; border-radius: 16px; color: #d8e8fb; background: #07182c; font: 12px/1.65 ui-monospace, SFMono-Regular, Menlo, monospace; }
.detail-content code { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }
.inline-pill { display: inline-block; padding: 3px 7px; border-radius: 6px; color: #135cca; background: #edf4ff; font-size: .86em; font-weight: 700; }
.truth-table { width: 100%; border-collapse: separate; border-spacing: 0; overflow: hidden; border: 1px solid var(--blue-line); border-radius: 15px; font-size: 13px; }
.truth-table th, .truth-table td { padding: 13px 15px; border-bottom: 1px solid var(--blue-line); text-align: left; vertical-align: top; }
.truth-table tr:last-child td { border-bottom: 0; }
.truth-table th { color: var(--blue-ink); background: #f4f8fc; }
.truth-table td { color: #536a84; }

/* Playground */
body.playground-body { min-height: 100vh; overflow: hidden; color: #e9f2ff; background: #061326; }
.play-nav { border-color: rgba(173,205,237,.16); background: rgba(6,19,38,.86); }
.play-nav .exp-brand, .play-nav .exp-links a, .play-nav .exp-actions .exp-docs { color: #dceaff; }
.play-nav .exp-links a:hover, .play-nav .exp-links a[aria-current="page"] { color: #fff; background: rgba(83,155,255,.12); }
.play-nav .exp-brand-mark { background: currentColor; }
.play-nav .exp-menu { background: rgba(255,255,255,.08); }
.play-nav .exp-menu i, .play-nav .exp-menu::before, .play-nav .exp-menu::after { background: #fff; }
.play-shell { height: 100vh; padding-top: 72px; display: grid; grid-template-rows: 72px minmax(0,1fr); }
.play-toolbar { display: flex; align-items: center; gap: 12px; padding: 11px 20px; border-bottom: 1px solid rgba(165,199,233,.14); background: #081a33; }
.play-scenario-select { min-width: 240px; padding: 10px 12px; border: 1px solid rgba(161,201,243,.18); border-radius: 10px; color: #e8f2ff; background: #0d2748; outline: none; }
.play-scenario-select option { color: #e8f2ff; background: #0d2748; }
.play-toolbar-note { color: #7990aa; font-size: 11px; }
.play-tool-actions { display: flex; gap: 8px; margin-left: auto; }
.play-tool { display: inline-flex; align-items: center; gap: 7px; padding: 9px 12px; border: 1px solid rgba(161,201,243,.18); border-radius: 9px; color: #bcd0e5; background: rgba(255,255,255,.035); cursor: pointer; font-size: 11px; font-weight: 750; }
.play-tool:hover { color: #fff; border-color: rgba(111,202,255,.44); background: rgba(67,139,224,.11); }
.play-workspace { min-height: 0; display: grid; grid-template-columns: minmax(0,1fr) 370px; }
.crystal-stage { position: relative; min-width: 0; overflow: hidden; background: radial-gradient(circle at 50% 46%,rgba(27,116,186,.15),transparent 31%),linear-gradient(145deg,#061326,#081b34 56%,#07162a); }
.crystal-stage::before { content: ""; position: absolute; inset: 0; opacity: .25; background-image: linear-gradient(rgba(99,174,241,.09) 1px,transparent 1px),linear-gradient(90deg,rgba(99,174,241,.09) 1px,transparent 1px); background-size: 54px 54px; }
.crystal-canvas { position: absolute; inset: 0; }
.connection-layer { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; }
.connection-layer line { stroke: rgba(75,181,255,.35); stroke-width: 1.3; }
.connection-layer line.active { stroke: #51d9ff; stroke-width: 2; filter: drop-shadow(0 0 6px #38bfff); }
.crystal-doc { position: absolute; width: 174px; height: 174px; padding: 0; border: 0; color: #eaf5ff; background: transparent; cursor: pointer; perspective: 700px; transform: translate(-50%,-50%); }
.crystal-doc .crystal-body { position: absolute; inset: 19px; border: 1px solid rgba(130,213,255,.48); border-radius: 20px; background: linear-gradient(145deg,rgba(255,255,255,.15),rgba(52,156,233,.055)); box-shadow: inset 0 1px rgba(255,255,255,.42),inset -15px -16px 32px rgba(32,120,218,.08),0 30px 50px rgba(0,3,12,.35); backdrop-filter: blur(9px); transform: rotateX(6deg) rotateY(-9deg) rotateZ(1deg); transition: .22s ease; }
.crystal-doc .crystal-body::before { content: ""; position: absolute; inset: 10px; border: 1px solid rgba(137,218,255,.18); border-radius: 14px; }
.crystal-doc .crystal-body::after { content: ""; position: absolute; width: 45px; height: 45px; right: 10px; top: 10px; border-top: 1px solid rgba(255,255,255,.5); border-right: 1px solid rgba(255,255,255,.5); transform: skewY(-20deg); }
.crystal-doc:hover .crystal-body, .crystal-doc.selected .crystal-body { border-color: #74e1ff; box-shadow: inset 0 1px rgba(255,255,255,.58),0 35px 65px rgba(0,3,12,.42),0 0 36px rgba(56,191,255,.18); transform: translateY(-6px) rotateX(3deg) rotateY(-5deg); }
.crystal-doc.selected .crystal-body { background: linear-gradient(145deg,rgba(255,255,255,.2),rgba(55,128,255,.12)); }
.crystal-doc .doc-glyph { position: absolute; z-index: 2; top: 40px; left: 40px; width: 31px; height: 31px; display: grid; place-items: center; border: 1px solid rgba(157,221,255,.28); border-radius: 10px; color: #85e4ff; background: rgba(1,16,36,.38); font-size: 13px; }
.crystal-doc .doc-name { position: absolute; z-index: 2; left: 39px; right: 34px; bottom: 48px; text-align: left; }
.crystal-doc .doc-name small { display: block; margin-bottom: 2px; color: #829bb5; font-size: 8px; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.crystal-doc .doc-name strong { display: block; overflow: hidden; color: #fff; font-size: 12px; line-height: 1.2; text-overflow: ellipsis; white-space: nowrap; }
.crystal-doc .doc-status { position: absolute; z-index: 2; right: 38px; top: 42px; width: 7px; height: 7px; border-radius: 50%; background: #45dfb1; box-shadow: 0 0 12px #45dfb1; }
.crystal-doc[data-status="blocked"] .doc-status { background: #ffbd5b; box-shadow: 0 0 12px #ffbd5b; }
.crystal-doc[data-status="expired"] .doc-status { background: #ff7184; box-shadow: 0 0 12px #ff7184; }
.actor-dock { position: absolute; z-index: 8; left: 20px; bottom: 20px; display: flex; flex-wrap: wrap; gap: 8px; max-width: calc(100% - 40px); padding: 8px; border: 1px solid rgba(154,201,240,.15); border-radius: 15px; background: rgba(5,20,39,.82); box-shadow: 0 20px 45px rgba(0,4,15,.3); backdrop-filter: blur(15px); }
.actor-button { display: flex; align-items: center; gap: 8px; padding: 8px 11px 8px 8px; border: 1px solid transparent; border-radius: 11px; color: #9fb6cd; background: transparent; cursor: pointer; font-size: 10px; font-weight: 750; }
.actor-button:hover, .actor-button.selected { border-color: rgba(101,201,255,.3); color: #fff; background: rgba(70,151,224,.13); }
.actor-avatar { width: 27px; height: 27px; display: grid; place-items: center; border-radius: 9px; color: #061326; background: linear-gradient(145deg,#99eaff,#7c8cff); font-size: 10px; font-weight: 900; }
.operation-popover { position: absolute; z-index: 12; left: 20px; bottom: 89px; width: min(430px,calc(100% - 40px)); display: none; padding: 16px; border: 1px solid rgba(139,205,255,.22); border-radius: 16px; color: #dceaff; background: rgba(7,25,48,.94); box-shadow: 0 25px 60px rgba(0,4,15,.42); backdrop-filter: blur(18px); }
.operation-popover.visible { display: block; }
.operation-head { display: flex; justify-content: space-between; gap: 14px; margin-bottom: 13px; }
.operation-head strong { color: #fff; font-size: 12px; }
.operation-head span { color: #7f98b3; font-size: 9px; }
.operation-list { display: grid; gap: 7px; }
.operation-button { display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 10px 11px; border: 1px solid rgba(143,193,234,.14); border-radius: 10px; color: #c9d9ea; background: rgba(255,255,255,.035); cursor: pointer; text-align: left; font-size: 10px; }
.operation-button:hover:not(:disabled) { border-color: rgba(91,213,255,.4); color: #fff; background: rgba(52,151,233,.1); }
.operation-button:disabled { opacity: .42; cursor: not-allowed; }
.operation-button b { color: #78e1ff; font-size: 9px; }
.play-inspector { min-height: 0; display: grid; grid-template-rows: auto minmax(0,1fr); border-left: 1px solid rgba(165,199,233,.14); background: #081a33; }
.inspector-tabs { display: grid; grid-template-columns: repeat(3,1fr); padding: 9px; border-bottom: 1px solid rgba(165,199,233,.13); }
.inspector-tab { padding: 10px 5px; border: 0; border-radius: 8px; color: #7f96ae; background: transparent; cursor: pointer; font-size: 10px; font-weight: 800; }
.inspector-tab:hover, .inspector-tab.active { color: #fff; background: rgba(77,151,226,.12); }
.inspector-panel { display: none; min-height: 0; overflow: auto; padding: 20px; }
.inspector-panel.active { display: block; }
.inspector-kicker { margin: 0 0 6px; color: #6edcff; font-size: 9px; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; }
.inspector-panel h2 { margin: 0 0 8px; color: #fff; font-size: 20px; letter-spacing: -.025em; }
.inspector-panel > p { margin: 0 0 17px; color: #849bb3; font-size: 11px; }
.document-data { display: grid; gap: 8px; }
.data-row { display: grid; grid-template-columns: 110px 1fr; gap: 10px; padding: 9px 0; border-bottom: 1px solid rgba(164,199,234,.09); font-size: 10px; }
.data-row span { color: #6f879f; }
.data-row strong { overflow-wrap: anywhere; color: #dceaff; font-weight: 650; }
.data-row code { color: #74dcff; font: 9px/1.5 ui-monospace,SFMono-Regular,Menlo,monospace; }
.timeline-list { display: grid; gap: 12px; }
.timeline-event { position: relative; padding-left: 24px; }
.timeline-event::before { content: ""; position: absolute; left: 4px; top: 5px; width: 8px; height: 8px; border: 2px solid #081a33; border-radius: 50%; background: #50d8ff; box-shadow: 0 0 0 1px rgba(80,216,255,.38); }
.timeline-event::after { content: ""; position: absolute; left: 8px; top: 17px; bottom: -13px; width: 1px; background: rgba(80,216,255,.2); }
.timeline-event:last-child::after { display: none; }
.timeline-event time { display: block; color: #657e98; font-size: 8px; }
.timeline-event strong { display: block; margin: 2px 0; color: #dceaff; font-size: 10px; }
.timeline-event span { color: #8299b2; font-size: 9px; }
.guide-progress { display: flex; justify-content: space-between; align-items: center; margin-bottom: 15px; color: #718ba5; font-size: 9px; }
.guide-bar { height: 5px; margin-bottom: 22px; overflow: hidden; border-radius: 99px; background: rgba(255,255,255,.08); }
.guide-bar i { display: block; height: 100%; border-radius: inherit; background: linear-gradient(90deg,#40d4ff,#6e64ff); transition: width .25s ease; }
.guide-card { padding: 17px; border: 1px solid rgba(143,193,234,.14); border-radius: 14px; background: rgba(255,255,255,.035); }
.guide-card strong { color: #fff; font-size: 12px; }
.guide-card p { margin: 8px 0 0; color: #899fb6; font-size: 10px; }
.guide-actions { display: grid; grid-template-columns: 1fr 1.4fr; gap: 8px; margin-top: 14px; }
.guide-actions button { padding: 9px; border: 1px solid rgba(143,193,234,.16); border-radius: 9px; color: #b8cce0; background: rgba(255,255,255,.04); cursor: pointer; font-size: 9px; font-weight: 800; }
.guide-actions button.primary { border-color: transparent; color: #07162a; background: #7be2ff; }
.toast { position: fixed; z-index: 200; left: 50%; bottom: 24px; max-width: min(560px,calc(100% - 32px)); padding: 12px 16px; border: 1px solid rgba(110,215,255,.28); border-radius: 12px; color: #e8f6ff; background: rgba(5,22,42,.94); box-shadow: 0 18px 45px rgba(0,4,15,.4); font-size: 11px; opacity: 0; pointer-events: none; transform: translate(-50%,18px); transition: .22s ease; }
.toast.visible { opacity: 1; transform: translate(-50%,0); }
.sr-only { position: absolute !important; width: 1px !important; height: 1px !important; padding: 0 !important; margin: -1px !important; overflow: hidden !important; clip: rect(0,0,0,0) !important; white-space: nowrap !important; border: 0 !important; }
.play-mode { display: inline-flex; align-items: center; gap: 7px; padding: 6px 9px; border: 1px solid rgba(85,217,180,.18); border-radius: 999px; color: #9bb2c9; font-size: 9px; font-weight: 750; white-space: nowrap; }
.play-mode i { width: 6px; height: 6px; border-radius: 50%; background: #45dfb1; box-shadow: 0 0 10px rgba(69,223,177,.65); }
.stage-context { position: absolute; z-index: 6; top: 20px; left: 23px; max-width: 520px; pointer-events: none; }
.stage-context h1 { margin: 0; color: #f1f7ff; font-size: clamp(19px,2.1vw,29px); line-height: 1.12; letter-spacing: -.035em; }
.stage-context > p:last-child { max-width: 500px; margin: 7px 0 0; color: #718aa5; font-size: 10px; }
.stage-legend { position: absolute; z-index: 7; top: 22px; right: 20px; display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 8px 12px; max-width: 380px; color: #69829c; font-size: 8px; }
.stage-legend span { display: inline-flex; align-items: center; gap: 5px; }
.stage-legend i { display: block; width: 18px; height: 1px; background: #4dbde9; }
.stage-legend i.legend-dashed { background: repeating-linear-gradient(90deg,#4dbde9 0 4px,transparent 4px 7px); }
.connection-layer line.dashed { stroke-dasharray: 3.4 2.4; }
.relationship-badge { position: absolute; z-index: 4; padding: 4px 7px; border: 1px solid rgba(129,194,239,.13); border-radius: 999px; color: #6f90ac; background: rgba(5,22,42,.82); font-size: 7px; font-weight: 800; letter-spacing: .05em; text-transform: uppercase; pointer-events: none; transform: translate(-50%,-50%); }
.embedded-mini { position: absolute; z-index: 3; right: 33px; bottom: 34px; width: 34px; height: 34px; border: 1px solid rgba(130,222,255,.55); border-radius: 8px; background: rgba(35,139,213,.11); box-shadow: inset -7px -8px 13px rgba(42,132,220,.1),0 5px 14px rgba(0,8,22,.26); transform: rotate(7deg); }
.embedded-mini::after { content: "embedded"; position: absolute; left: 50%; top: calc(100% + 3px); color: #6d91ad; font-size: 6px; font-weight: 800; letter-spacing: .04em; transform: translateX(-50%); }
.operation-close { padding: 0; border: 0; color: #7891aa; background: transparent; cursor: pointer; }
.operation-preflight { margin: 0 0 12px; padding: 10px; border-left: 2px solid #48cfff; color: #829bb5; background: rgba(68,166,232,.065); font-size: 9px; line-height: 1.45; }
.operation-button span { display: block; }
.operation-button small { display: block; margin-top: 2px; color: #6f879f; font-size: 8px; }
.doc-frontier { position: absolute; z-index: 2; left: 39px; right: 34px; bottom: 32px; overflow: hidden; color: #6e8ba6; font-size: 7px; text-align: left; text-overflow: ellipsis; white-space: nowrap; }
.inspector-status { display: inline-flex; align-items: center; gap: 6px; margin: 3px 0 14px; padding: 5px 8px; border: 1px solid rgba(72,219,177,.18); border-radius: 999px; color: #67dfbd; font-size: 8px; font-weight: 800; text-transform: uppercase; }
.inspector-status.blocked, .inspector-status.deferred { border-color: rgba(255,189,91,.2); color: #ffbd5b; }
.inspector-status.expired, .inspector-status.withheld { border-color: rgba(255,113,132,.2); color: #ff8191; }
.timeline-outcome { display: inline-block; margin-top: 5px; padding: 2px 5px; border-radius: 5px; color: #58dfb8; background: rgba(54,220,172,.08); font-size: 7px; font-weight: 850; letter-spacing: .06em; }
.timeline-outcome.withheld { color: #ff8796; background: rgba(255,103,124,.08); }
.timeline-outcome.deferred { color: #ffc56e; background: rgba(255,188,82,.08); }
.timeline-outcome.no-effect { color: #9caec1; background: rgba(156,174,193,.08); }
.timeline-explain { margin-top: 18px; padding: 12px; border: 1px solid rgba(143,193,234,.12); border-radius: 11px; color: #8299b2; background: rgba(255,255,255,.025); font-size: 9px; }
.guide-chapter { display: inline-block; margin-bottom: 10px; color: #6edcff; font-size: 8px; font-weight: 850; letter-spacing: .08em; text-transform: uppercase; }
.guide-result { margin-top: 12px; padding: 9px; border-radius: 9px; color: #9eb5cb; background: rgba(97,158,218,.07); font-size: 9px; }
.branch-badge { display: inline-flex; margin-left: 6px; padding: 3px 6px; border-radius: 6px; color: #91e7ff; background: rgba(71,184,244,.1); font-size: 8px; vertical-align: middle; }
.crystal-doc:focus-visible, .actor-button:focus-visible, .play-tool:focus-visible, .inspector-tab:focus-visible, .operation-button:focus-visible { outline: 2px solid #7ae4ff; outline-offset: 3px; }

@media (max-width: 1050px) {
  .exp-links { gap: 0; margin-left: 22px; }
  .exp-links a { padding: 8px; font-size: 13px; }
  .exp-actions .exp-docs { display: none; }
  .exp-hero-inner { grid-template-columns: 1fr; padding-top: 74px; }
  .exp-hero { min-height: auto; }
  .exp-hero-copy { max-width: 760px; }
  .reality-stage { min-height: 510px; width: min(680px,100%); margin: -15px auto 0; }
  .proofline-inner { grid-template-columns: repeat(2,1fr); }
  .proofline-item:nth-child(2) { border-right: 0; }
  .proofline-item:nth-child(-n+2) { border-bottom: 1px solid var(--blue-line); }
  .exp-four { grid-template-columns: repeat(2,1fr); }
  .concept-feature, .concept-feature.reverse { grid-template-columns: 1fr; gap: 45px; }
  .concept-feature.reverse .concept-copy { order: 0; }
  .policy-visual, .mandate-visual, .network-visual { min-height: 430px; }
  .footer-grid { grid-template-columns: 1.3fr repeat(2,1fr); }
  .footer-group:nth-child(n+4) { margin-top: 10px; }
  .play-workspace { grid-template-columns: minmax(0,1fr) 330px; }
  .stage-legend { display: none; }
}

@media (max-width: 820px) {
  .exp-nav { height: 64px; padding: 0 16px; }
  .exp-main { padding-top: 64px; }
  .exp-brand small { display: none; }
  .exp-links, .exp-actions { position: fixed; z-index: 88; left: 14px; right: 14px; top: 74px; display: none; flex-direction: column; align-items: stretch; margin: 0; padding: 15px; border: 1px solid var(--blue-line); border-radius: 16px; background: #fff; box-shadow: var(--blue-shadow); }
  .exp-actions { top: auto; bottom: 14px; }
  .menu-visible .exp-links, .menu-visible .exp-actions { display: flex; }
  .menu-visible .exp-actions .exp-docs { display: block; }
  .exp-links a, .exp-actions a { padding: 11px 12px; }
  .exp-menu { display: block; }
  .play-nav .exp-links, .play-nav .exp-actions { border-color: rgba(173,205,237,.18); background: #081a33; }
  .exp-container, .exp-narrow { width: min(100% - 32px, 740px); }
  .exp-section { padding: 80px 0; }
  .exp-section-head { display: block; }
  .exp-section-head > p { margin-top: 15px; }
  .exp-hero-inner { padding: 70px 0 88px; }
  .exp-hero h1 { font-size: clamp(48px,13vw,70px); }
  .reality-stage { min-height: 480px; transform: scale(.9); transform-origin: center; }
  .exp-three, .exp-two { grid-template-columns: 1fr; }
  .exp-problem { grid-template-columns: 1fr; gap: 35px; }
  .problem-quote { position: static; }
  .footer-grid { grid-template-columns: repeat(2,1fr); }
  .footer-brand { grid-column: 1/-1; }
  .detail-grid { grid-template-columns: 1fr; }
  .detail-nav { position: static; }
  body.playground-body { overflow: auto; }
  .play-shell { height: auto; min-height: 100vh; padding-top: 64px; grid-template-rows: auto auto; }
  .play-toolbar { flex-wrap: wrap; }
  .play-scenario-select { flex: 1; min-width: 200px; }
  .play-toolbar-note { order: 3; width: 100%; }
  .play-mode { margin-left: auto; }
  .play-workspace { display: block; }
  .crystal-stage { min-height: 610px; }
  .play-inspector { min-height: 520px; border-top: 1px solid rgba(165,199,233,.14); border-left: 0; }
}

@media (max-width: 560px) {
  .exp-container, .exp-narrow { width: min(100% - 24px, 520px); }
  .exp-section { padding: 66px 0; }
  .exp-title { font-size: 41px; }
  .exp-section h2 { font-size: 35px; }
  .exp-lede { font-size: 17px; }
  .exp-hero-inner { padding: 60px 0 85px; }
  .exp-hero h1 { font-size: 45px; }
  .exp-hero p { font-size: 17px; }
  .reality-stage { min-height: 420px; margin: -35px -35px 0; transform: scale(.72); }
  .stage-caption { bottom: -30px; }
  .proofline-inner { grid-template-columns: 1fr; }
  .proofline-item { border-right: 0; border-bottom: 1px solid var(--blue-line); }
  .proofline-item:last-child { border-bottom: 0; }
  .exp-four { grid-template-columns: 1fr; }
  .exp-card { padding: 23px; }
  .policy-visual, .mandate-visual, .network-visual { min-height: 390px; }
  .policy-node { width: 105px; padding: 12px; }
  .policy-doc { width: 103px; padding: 12px; }
  .network-satellite { width: 101px; }
  .network-root { width: 145px; }
  .stack-row { grid-template-columns: 1fr; gap: 7px; }
  .exp-callout { padding: 35px 25px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px 20px; }
  .footer-bottom { display: block; }
  .inner-hero { padding: 94px 0 70px; }
  .journey-step { grid-template-columns: 56px 1fr; gap: 12px; }
  .journey-step::before { left: 21px; }
  .journey-step b { width: 43px; height: 43px; }
  .truth-table { display: block; overflow-x: auto; }
  .play-tool-actions { width: 100%; margin-left: 0; }
  .play-tool { flex: 1; justify-content: center; }
  .play-mode { order: 3; margin-left: 0; }
  .play-toolbar-note { order: 4; }
  .stage-context { top: 14px; left: 14px; right: 14px; }
  .stage-context > p:last-child { max-width: 330px; }
  .crystal-stage { min-height: 570px; }
  .crystal-doc { width: 145px; height: 145px; }
  .crystal-doc .doc-glyph { top: 34px; left: 34px; }
  .crystal-doc .doc-status { top: 36px; right: 32px; }
  .crystal-doc .doc-name { left: 33px; right: 30px; bottom: 39px; }
  .actor-dock { left: 10px; right: 10px; bottom: 10px; max-width: none; }
  .actor-button { padding-right: 8px; }
  .operation-popover { left: 10px; bottom: 83px; width: calc(100% - 20px); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
}