*, *::before, *::after { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body { margin: 0; }
    button, input { font: inherit; }
    a { color: inherit; }

    :root {
      --paper: #f5f1e8;
      --paper-deep: #e9e2d5;
      --ink: #18211e;
      --muted: #68726c;
      --line: rgba(24, 33, 30, 0.15);
      --line-strong: rgba(24, 33, 30, 0.27);
      --blue: #3f6981;
      --blue-soft: #dbe5e7;
      --teal: #3c7b6d;
      --teal-soft: #d8e6df;
      --coral: #c9714f;
      --coral-soft: #f0ddd2;
      --sand: #c69f70;
      --display: "Newsreader", Georgia, serif;
      --sans: "Instrument Sans", Arial, sans-serif;
      --site: 1240px;
    }

    body {
      background: var(--paper);
      color: var(--ink);
      font-family: var(--sans);
      font-size: 16px;
      line-height: 1.55;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

    .shell { width: min(var(--site), calc(100% - 64px)); margin: 0 auto; }
    .serif { font-family: var(--display); }
    .muted { color: var(--muted); }

    .site-nav {
      position: sticky;
      top: 0;
      z-index: 12;
      border-bottom: 1px solid transparent;
      background: rgba(245, 241, 232, 0.78);
      backdrop-filter: blur(18px);
      transition: border-color 220ms ease, background 220ms ease;
    }
    .site-nav.scrolled { border-color: var(--line); background: rgba(245, 241, 232, 0.94); }
    .nav-inner { min-height: 74px; display: flex; align-items: center; justify-content: space-between; }
    .brand { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; }
    .brand-mark { position: relative; width: 28px; height: 28px; border: 1px solid var(--ink); border-radius: 50%; }
    .brand-mark::before, .brand-mark::after { position: absolute; border: 1px solid var(--blue); border-radius: 50%; content: ""; }
    .brand-mark::before { inset: 5px -3px; transform: rotate(34deg); }
    .brand-mark::after { inset: -3px 7px; transform: rotate(-28deg); }
    .brand-name { font-family: var(--display); font-size: 21px; font-weight: 500; letter-spacing: -0.02em; }
    .nav-links { display: flex; align-items: center; gap: 28px; }
    .nav-links a { color: var(--muted); font-size: 12px; font-weight: 500; text-decoration: none; }
    .nav-links a:hover { color: var(--ink); }
    .nav-links .nav-cta { padding-bottom: 2px; border-bottom: 1px solid var(--line-strong); color: var(--ink); }
    .menu-button { display: none; padding: 8px 0; border: 0; background: none; color: var(--ink); cursor: pointer; }
    .mobile-nav {
      position: fixed;
      inset: 64px 0 auto;
      z-index: 11;
      display: none;
      padding: 26px 20px 32px;
      border-bottom: 1px solid var(--line);
      background: rgba(245, 241, 232, .98);
      box-shadow: 0 18px 40px rgba(24,33,30,.08);
    }
    .mobile-nav.is-open { display: grid; gap: 18px; }
    .mobile-nav a { font-family: var(--display); font-size: 26px; text-decoration: none; }

    .hero {
      position: relative;
      min-height: calc(100svh - 74px);
      overflow: hidden;
      background: var(--paper);
      color: var(--ink);
      isolation: isolate;
    }
    .hero::before {
      position: absolute;
      inset: 0;
      z-index: 0;
      background:
        radial-gradient(ellipse 50% 68% at 76% 48%, rgba(63,105,129,.16), transparent 68%),
        radial-gradient(ellipse 35% 44% at 91% 17%, rgba(60,123,109,.1), transparent 72%),
        linear-gradient(112deg, var(--paper) 0%, var(--paper) 48%, #edf0e9 100%);
      content: "";
      animation: heroAtmosphere 11s ease-in-out 2s infinite alternate;
    }
    .hero::after {
      position: absolute;
      inset: 0;
      z-index: 9;
      background: var(--paper);
      content: "";
      pointer-events: none;
      transform-origin: right center;
    }
    .hero-inner {
      position: relative;
      z-index: 2;
      display: grid;
      grid-template-columns: minmax(0, 1.42fr) minmax(330px, .58fr);
      gap: clamp(40px, 6vw, 90px);
      align-items: center;
      min-height: calc(100svh - 74px);
      padding: 74px 0 86px;
    }
    body.intro-ready .hero::after { animation: heroCurtain 1.15s .08s cubic-bezier(.76,0,.24,1) both; }
    .hero h1 {
      max-width: 850px;
      margin: 0;
      font-family: var(--display);
      font-size: clamp(56px, 6.5vw, 92px);
      font-weight: 400;
      letter-spacing: -0.055em;
      line-height: 0.94;
      opacity: 0;
      clip-path: inset(0 0 100% 0);
      transform: translateY(30px);
    }
    body.intro-ready .hero h1 { animation: heroHeadlineIn 1.15s .52s cubic-bezier(.16,1,.3,1) forwards; }
    .hero h1 em { color: var(--blue); font-weight: 400; }
    .hero-deck { max-width: 630px; margin: 34px 0 0; color: var(--muted); font-size: 19px; line-height: 1.6; opacity: 0; transform: translateY(18px); }
    body.intro-ready .hero-deck { animation: heroCopyIn .85s .9s cubic-bezier(.16,1,.3,1) forwards; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 20px; align-items: center; margin-top: 38px; opacity: 0; transform: translateY(14px); }
    body.intro-ready .hero-actions { animation: heroCopyIn .8s 1.08s cubic-bezier(.16,1,.3,1) forwards; }
    .primary-link, .text-link { font-size: 13px; font-weight: 500; text-decoration: none; }
    .primary-link { display: inline-flex; gap: 12px; align-items: center; padding-bottom: 4px; border-bottom: 1px solid var(--ink); color: var(--ink); }
    .text-link { display: inline-flex; gap: 10px; align-items: center; padding-bottom: 4px; border-bottom: 1px solid var(--line-strong); }
    .hero .primary-link { border-color: currentColor; color: var(--ink); }
    .hero .text-link { border-color: var(--line-strong); color: var(--muted); }
    .primary-link { transition: color 200ms ease, border-color 200ms ease; }
    .primary-link:hover { border-color: var(--blue); color: var(--blue); }
    .hero .primary-link:hover { border-color: var(--blue); color: var(--blue); }

    .hero-system { position: relative; min-height: 540px; opacity: 0; filter: blur(9px); transform: translate3d(calc(var(--hero-x, 0) * 1px), calc(var(--hero-y, 0) * 1px), 0); transition: transform 900ms cubic-bezier(.18,.72,.2,1); }
    body.intro-ready .hero-system { animation: heroSystemIn 1.3s .58s cubic-bezier(.16,1,.3,1) forwards; }
    .hero-system::before { position: absolute; inset: 3% -18% 0 -8%; border-radius: 50%; background: radial-gradient(circle, rgba(255,255,255,.7), rgba(255,255,255,0) 68%); content: ""; }
    .hero-system::after { position: absolute; top: 50%; left: 50%; width: 75%; height: 75%; border-radius: 50%; background: radial-gradient(circle, rgba(63,105,129,.11), transparent 65%); content: ""; transform: translate(-50%,-50%) scale(.84); animation: heroAura 7s ease-in-out 1.9s infinite alternate; pointer-events: none; }
    .hero-system-ring { position: absolute; top: 50%; left: 50%; border: 1px solid var(--line-strong); border-radius: 50%; transform: translate(-50%,-50%); will-change: transform; }
    .hero-system-ring span { position: absolute; padding: 4px 8px; background: var(--paper); color: var(--muted); font-size: 10px; font-weight: 500; letter-spacing: .1em; text-transform: uppercase; white-space: nowrap; will-change: transform; }
    .hero-system-ring span::after { position: absolute; top: 50%; right: -14px; width: 9px; height: 9px; border: 5px solid var(--paper); border-radius: 50%; background: var(--ring-color); box-shadow: 0 0 0 1px var(--line), 0 3px 14px color-mix(in srgb, var(--ring-color) 35%, transparent); content: ""; transform: translateY(-50%); }
    .hero-system-ring.hr1 { --ring-color: var(--coral); width: 430px; height: 430px; }
    .hero-system-ring.hr1 span { top: calc(9% - 6px); right: calc(8% + 14px); }
    .hero-system-ring.hr2 { --ring-color: var(--blue); width: 326px; height: 326px; }
    .hero-system-ring.hr2 span { right: 14px; bottom: calc(30% - 6px); }
    .hero-system-ring.hr3 { --ring-color: var(--teal); width: 218px; height: 218px; }
    .hero-system-ring.hr3 span { bottom: calc(3% - 6px); left: calc(16% + 14px); }
    .hero-system-ring.hr3 span::after { right: auto; left: -14px; }
    .hero-system-ring.hr1 { animation: heroOrbitClockwise 24s linear 1.8s infinite; }
    .hero-system-ring.hr1 span { animation: heroCounterClockwise 24s linear 1.8s infinite; }
    .hero-system-ring.hr2 { animation: heroOrbitCounter 31s linear 1.8s infinite; }
    .hero-system-ring.hr2 span { animation: heroCounterCounter 31s linear 1.8s infinite; }
    .hero-system-ring.hr3 { animation: heroOrbitClockwise 18s linear 1.8s infinite; }
    .hero-system-ring.hr3 span { animation: heroCounterClockwise 18s linear 1.8s infinite; }
    .hero-system-core { position: absolute; top: 50%; left: 50%; z-index: 2; display: grid; width: 114px; height: 114px; place-items: center; border-radius: 50%; background: radial-gradient(circle at 35% 28%, #26342f, var(--ink) 72%); color: var(--paper); font-family: var(--display); font-size: 19px; line-height: 1.05; text-align: center; transform: translate(-50%,-50%); box-shadow: 0 18px 54px rgba(24,33,30,.2), 0 0 0 1px rgba(24,33,30,.08); animation: heroCore 5.5s ease-in-out 1.9s infinite alternate; }
    .hero-system-caption { position: absolute; right: 0; bottom: 20px; left: 0; color: var(--muted); font-size: 11px; letter-spacing: .06em; text-align: center; }

    @keyframes heroCurtain { 0% { transform: scaleX(1); } 100% { transform: scaleX(0); } }
    @keyframes heroHeadlineIn { to { opacity: 1; clip-path: inset(0 0 0 0); transform: translateY(0); } }
    @keyframes heroCopyIn { to { opacity: 1; transform: translateY(0); } }
    @keyframes heroSystemIn { to { opacity: 1; filter: blur(0); } }
    @keyframes heroAtmosphere { to { opacity: .82; transform: scale(1.035) translate3d(-.8%, .5%, 0); } }
    @keyframes heroAura { to { opacity: .38; transform: translate(-50%,-50%) scale(1.14); } }
    @keyframes heroOrbitClockwise { to { transform: translate(-50%,-50%) rotate(360deg); } }
    @keyframes heroCounterClockwise { to { transform: rotate(-360deg); } }
    @keyframes heroOrbitCounter { to { transform: translate(-50%,-50%) rotate(-360deg); } }
    @keyframes heroCounterCounter { to { transform: rotate(360deg); } }
    @keyframes heroCore { to { box-shadow: 0 24px 68px rgba(24,33,30,.23), 0 0 0 13px rgba(63,105,129,.045); transform: translate(-50%,-50%) scale(1.035); } }

    .proof-strip { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
    .proof-inner { min-height: 88px; display: grid; grid-template-columns: 170px 1fr; align-items: center; }
    .proof-label { color: var(--muted); font-family: var(--display); font-size: 15px; }
    .proof-names { display: flex; align-items: center; justify-content: space-between; gap: 28px; color: #4f5d57; font-family: var(--display); font-size: clamp(16px, 2vw, 21px); }
    .proof-names span { transition: color 260ms ease, transform 360ms cubic-bezier(.18,.72,.2,1); }
    .proof-names span:hover { color: var(--blue); transform: translateY(-3px); }

    .section-intro { display: grid; grid-template-columns: 1fr 1fr; gap: 70px; align-items: end; padding: 150px 0 90px; }
    .section-intro h2 { max-width: 680px; margin: 0; font-family: var(--display); font-size: clamp(50px, 6vw, 80px); font-weight: 400; letter-spacing: -0.045em; line-height: 0.98; }
    .section-intro p { max-width: 520px; margin: 0 0 7px; color: var(--muted); font-size: 18px; }

    .story { border-top: 1px solid var(--line); }
    .story-grid { display: grid; grid-template-columns: minmax(0, 1.18fr) minmax(320px, .82fr); gap: clamp(48px, 7vw, 110px); align-items: start; }
    .story-visual { position: sticky; top: 104px; min-height: calc(100vh - 140px); display: flex; align-items: center; padding: 64px 0; }
    .visual-stage { position: relative; width: 100%; max-width: 710px; aspect-ratio: 1.08; overflow: hidden; border-radius: 34px; background: rgba(255,255,255,.32); box-shadow: inset 0 0 0 1px var(--line); }
    .visual-stage::before { position: absolute; inset: 0; background: radial-gradient(circle at 50% 48%, rgba(63,105,129,.11), transparent 42%); content: ""; }
    .visual-index { position: absolute; top: 25px; left: 28px; z-index: 3; color: var(--muted); font-family: var(--display); font-size: 18px; font-weight: 400; }

    .chapters { padding: 12vh 0; }
    .chapter { min-height: 76vh; display: flex; flex-direction: column; justify-content: center; opacity: .35; transition: opacity 420ms ease; }
    .chapter.is-active { opacity: 1; }
    .chapter h3 { max-width: 480px; margin: 0; font-family: var(--display); font-size: clamp(38px, 4vw, 57px); font-weight: 400; letter-spacing: -0.04em; line-height: 1; }
    .chapter p { max-width: 470px; margin: 25px 0 0; color: var(--muted); font-size: 17px; line-height: 1.65; }
    .chapter .text-link { align-self: flex-start; margin-top: 28px; color: var(--blue); }

    .chart-scene { position: absolute; inset: 72px 38px 66px; opacity: 0; transform: translateY(18px) scale(.975); transition: opacity 520ms ease, transform 760ms cubic-bezier(.18,.72,.2,1); pointer-events: none; }
    .visual-stage[data-stage="0"] .scene-0,
    .visual-stage[data-stage="1"] .scene-1,
    .visual-stage[data-stage="2"] .scene-2 { opacity: 1; transform: none; }
    .chart-label { color: var(--muted); font-family: var(--display); font-size: 13px; font-weight: 400; letter-spacing: 0; text-transform: none; }
    .chart-title { font-family: var(--display); font-size: 20px; font-weight: 400; line-height: 1.08; }

    .silo-grid { position: relative; display: grid; grid-template-columns: 1fr 1fr; gap: 22px; height: 100%; align-content: center; padding: 16px 52px; }
    .silo-card { position: relative; padding: 20px 18px; border: 1px solid var(--line-strong); border-radius: 14px; background: rgba(245,241,232,.78); }
    .silo-card::before { position: absolute; top: 0; left: 18px; width: 38px; height: 3px; background: var(--silo-color); content: ""; }
    .silo-card strong { display: block; margin: 7px 0 10px; font-family: var(--display); font-size: 19px; font-weight: 400; }
    .silo-card span { color: var(--muted); font-size: 11px; }
    .silo-card:nth-child(1) { --silo-color: var(--blue); }
    .silo-card:nth-child(2) { --silo-color: var(--coral); }
    .silo-card:nth-child(3) { --silo-color: var(--sand); }
    .silo-card:nth-child(4) { --silo-color: var(--teal); }
    .silo-gap { position: absolute; top: 50%; left: 50%; z-index: 2; width: 112px; padding: 10px 0; border-top: 1px solid var(--ink); border-bottom: 1px solid var(--ink); background: var(--paper); color: var(--ink); font-size: 10px; font-weight: 500; text-align: center; transform: translate(-50%,-50%); }

    .architecture { display: grid; grid-template-columns: 1fr 150px; gap: 20px; align-items: stretch; height: 100%; padding: 6px 4px; }
    .layer-stack { display: flex; flex-direction: column; justify-content: center; gap: 8px; }
    .os-layer { display: grid; grid-template-columns: 40px 1fr; align-items: center; min-height: 78px; margin: 0 auto; padding: 11px 16px; border: 1px solid color-mix(in srgb, var(--layer-color) 42%, var(--line)); border-radius: 12px; background: color-mix(in srgb, var(--layer-color) 8%, rgba(255,255,255,.28)); }
    .os-layer:nth-child(1) { --layer-color: var(--coral); width: 76%; }
    .os-layer:nth-child(2) { --layer-color: var(--blue); width: 84%; }
    .os-layer:nth-child(3) { --layer-color: var(--teal); width: 92%; }
    .os-layer:nth-child(4) { --layer-color: var(--sand); width: 100%; }
    .layer-num { color: var(--layer-color); font-family: var(--display); font-size: 22px; }
    .layer-copy strong { display: block; font-size: 12px; font-weight: 600; }
    .layer-copy span { display: block; margin-top: 3px; color: var(--muted); font-size: 11px; }
    .principles-rail { display: flex; flex-direction: column; justify-content: center; gap: 10px; padding-left: 20px; border-left: 1px solid var(--line); }
    .principles-rail .chart-label { margin-bottom: 6px; }
    .principle-pill { padding: 12px 10px; border-left: 2px solid var(--blue); background: rgba(63,105,129,.06); color: var(--ink); font-size: 11px; line-height: 1.35; }

    .economics-map { display: grid; grid-template-rows: auto auto 24px auto 24px auto; align-content: center; height: 100%; padding: 4px 22px; }
    .economic-drivers { display: grid; grid-template-columns: repeat(3,1fr); gap: 12px; }
    .driver { padding: 16px 12px; border-top: 3px solid var(--driver-color); background: rgba(255,255,255,.3); text-align: center; }
    .driver:nth-child(1) { --driver-color: var(--coral); }
    .driver:nth-child(2) { --driver-color: var(--blue); }
    .driver:nth-child(3) { --driver-color: var(--teal); }
    .driver strong { display: block; font-family: var(--display); font-size: 17px; font-weight: 400; }
    .driver span { display: block; margin-top: 5px; color: var(--muted); font-size: 11px; line-height: 1.35; }
    .enable-ribbon { margin-top: 9px; padding: 8px 12px; border: 1px solid color-mix(in srgb, var(--sand) 45%, var(--line)); background: rgba(198,159,112,.08); color: var(--muted); font-size: 11px; text-align: center; }
    .enable-ribbon strong { margin-right: 8px; color: var(--ink); font-weight: 600; }
    .merge-arrow { position: relative; }
    .merge-arrow::before { position: absolute; top: 0; bottom: 8px; left: 50%; width: 1px; background: var(--line-strong); content: ""; }
    .merge-arrow::after { position: absolute; bottom: 5px; left: calc(50% - 4px); width: 7px; height: 7px; border-right: 1px solid var(--ink); border-bottom: 1px solid var(--ink); content: ""; transform: rotate(45deg); }
    .noi-result { justify-self: center; min-width: 210px; padding: 14px 25px; border-top: 1px solid var(--ink); border-bottom: 1px solid var(--ink); color: var(--ink); font-family: var(--display); font-size: 21px; text-align: center; }
    .valuation-equation { display: grid; grid-template-columns: 1fr auto .72fr auto 1fr; gap: 10px; align-items: center; padding: 15px; border: 1px solid var(--line-strong); border-radius: 14px; background: rgba(255,255,255,.28); text-align: center; }
    .valuation-term strong { display: block; font-family: var(--display); font-size: 16px; font-weight: 400; }
    .valuation-term span { color: var(--muted); font-size: 10px; }
    .valuation-term.output strong { color: var(--teal); }
    .operator { color: var(--muted); font-family: var(--display); font-size: 22px; }

    .idt-stage { background: #17211e; color: var(--paper); }
    .idt-stage::before { background: radial-gradient(circle at 50% 50%, rgba(60,123,109,.24), transparent 48%); }
    .idt-stage .visual-index { color: rgba(245,241,232,.62); }
    .idt-stage .chart-label { color: rgba(245,241,232,.55); }
    .legacy-funnel { display: flex; flex-direction: column; justify-content: center; gap: 12px; height: 100%; padding: 10px 58px; }
    .legacy-row { display: grid; grid-template-columns: 1fr; gap: 4px; align-items: center; min-height: 88px; margin: 0 auto; padding: 12px 18px; border: 1px solid rgba(245,241,232,.2); background: rgba(245,241,232,.045); text-align: center; }
    .legacy-row:nth-child(1) { width: 100%; }
    .legacy-row:nth-child(2) { width: 74%; }
    .legacy-row:nth-child(3) { width: 48%; }
    .legacy-row strong { font-family: var(--display); font-size: 20px; font-weight: 400; }
    .legacy-row span { color: rgba(245,241,232,.55); font-size: 11px; line-height: 1.4; }

    .qualification-engine { display: grid; grid-template-columns: 1fr 42px 1.16fr 42px .72fr; align-items: center; height: 100%; padding: 18px 0; }
    .inventory { display: grid; grid-template-columns: repeat(6, 1fr); gap: 7px; padding: 16px; border: 1px solid rgba(245,241,232,.14); }
    .hotel-dot { aspect-ratio: 1; border-radius: 3px; background: rgba(245,241,232,.22); }
    .hotel-dot:nth-child(3n), .hotel-dot:nth-child(5n) { opacity: .28; }
    .engine-arrow { position: relative; height: 1px; background: rgba(245,241,232,.25); }
    .engine-arrow::after { position: absolute; top: -4px; right: 0; width: 8px; height: 8px; border-top: 1px solid rgba(245,241,232,.55); border-right: 1px solid rgba(245,241,232,.55); content: ""; transform: rotate(45deg); }
    .gate { padding: 18px; border: 1px solid rgba(63,105,129,.58); background: rgba(63,105,129,.1); }
    .gate h4, .qualified h4 { margin: 0 0 12px; font-family: var(--display); font-size: 19px; font-weight: 400; }
    .gate-list { display: grid; grid-template-columns: 1fr 1fr; gap: 7px; }
    .gate-list span { padding: 6px 7px; border: 1px solid rgba(245,241,232,.13); color: rgba(245,241,232,.7); font-size: 11px; }
    .qualified { text-align: center; }
    .qualified-count { display: block; color: var(--paper); font-family: var(--display); font-size: 44px; line-height: 1; }
    .qualified span:last-child { color: rgba(245,241,232,.55); font-size: 11px; }

    .recommendation-system { display: grid; grid-template-columns: 1fr 32px 1fr 32px .86fr; align-items: stretch; height: 100%; padding: 26px 0; }
    .recommendation-box { display: flex; flex-direction: column; justify-content: center; padding: 18px; border: 1px solid rgba(245,241,232,.16); background: rgba(245,241,232,.04); }
    .recommendation-box.experience { border-color: rgba(60,123,109,.72); background: rgba(60,123,109,.12); }
    .recommendation-box h4 { margin: 6px 0 12px; font-family: var(--display); font-size: 19px; font-weight: 400; }
    .signal-list { display: flex; flex-wrap: wrap; gap: 6px; }
    .signal-list span { padding: 6px 7px; border: 1px solid rgba(245,241,232,.13); color: rgba(245,241,232,.65); font-size: 11px; }
    .recommendation-output { display: flex; flex-direction: column; justify-content: center; text-align: center; }
    .shortlist { display: flex; justify-content: center; gap: 8px; margin: 10px 0 16px; }
    .shortlist span { display: grid; width: 36px; height: 48px; place-items: center; border: 1px solid rgba(201,113,79,.7); background: rgba(201,113,79,.12); font-family: var(--display); font-size: 16px; }
    .awareness-output { padding-top: 14px; border-top: 1px solid rgba(245,241,232,.16); }
    .awareness-output strong { display: block; color: var(--paper); font-family: var(--display); font-size: 19px; font-weight: 400; }
    .awareness-output span { color: rgba(245,241,232,.55); font-size: 11px; }

    /* Full-bleed cinematic framework stories */
    .story { position: relative; overflow: clip; border-top: 1px solid rgba(245,241,232,.11); background: #111b18; color: var(--paper); }
    .story[data-story="idt"] { background: #0b1517; }
    .story-grid { position: relative; display: block; width: 100%; max-width: none; }
    .story-visual { position: sticky; top: 0; z-index: 1; display: block; width: 100%; height: 100vh; min-height: 0; padding: 0; }
    .visual-stage { width: 100%; height: 100%; max-width: none; aspect-ratio: auto; overflow: hidden; border-radius: 0; background: #111b18; box-shadow: none; isolation: isolate; }
    .visual-stage.idt-stage { background: #0b1517; color: var(--paper); }
    .visual-stage::before { z-index: 1; background:
      radial-gradient(circle at 30% 48%, rgba(89,151,169,.2), transparent 39%),
      linear-gradient(90deg, rgba(17,27,24,.04) 0%, rgba(17,27,24,.14) 43%, rgba(17,27,24,.82) 70%, #111b18 100%); }
    .idt-stage::before { background:
      radial-gradient(circle at 70% 48%, rgba(75,154,137,.2), transparent 42%),
      linear-gradient(270deg, rgba(11,21,23,.04) 0%, rgba(11,21,23,.13) 43%, rgba(11,21,23,.84) 70%, #0b1517 100%); }
    .visual-stage::after { display: none; }
    .cinema-canvas { position: absolute; inset: 0; z-index: 0; width: 100%; height: 100%; opacity: 0; transition: opacity 700ms ease; }
    .has-webgl .cinema-canvas { opacity: 1; }
    .has-webgl .chart-scene { opacity: 0 !important; transform: scale(.94) !important; }
    .visual-index { top: clamp(86px, 10vh, 112px); left: clamp(24px, 5vw, 82px); z-index: 6; color: rgba(245,241,232,.58); font-family: var(--display); font-size: 18px; font-weight: 400; letter-spacing: 0; text-transform: none; }
    .chart-scene { z-index: 3; inset: 17vh 48vw 13vh 5vw; transition: opacity 480ms ease, transform 760ms cubic-bezier(.18,.72,.2,1); }
    .chart-scene .chart-title, .chart-scene strong { color: var(--paper); }
    .idt-stage .chart-scene strong { color: var(--paper); }
    .story .chart-label, .story .idt-stage .visual-index, .story .idt-stage .chart-label { color: rgba(245,241,232,.56); }
    .story .silo-card { border-color: rgba(245,241,232,.18); background: rgba(245,241,232,.055); }
    .story .silo-card span, .story .layer-copy span, .story .driver span { color: rgba(245,241,232,.56); }
    .story .silo-gap { border-color: rgba(245,241,232,.38); background: #111b18; color: var(--paper); }
    .story .os-layer { background: color-mix(in srgb, var(--layer-color) 13%, rgba(11,21,18,.9)); }
    .story .principles-rail { border-color: rgba(245,241,232,.14); }
    .story .principle-pill { background: rgba(63,105,129,.16); color: var(--paper); }
    .story .driver { background: rgba(245,241,232,.055); }
    .story .enable-ribbon { background: rgba(198,159,112,.1); color: rgba(245,241,232,.62); }
    .story .enable-ribbon strong { color: var(--paper); }
    .story .merge-arrow::before { background: rgba(245,241,232,.3); }
    .story .merge-arrow::after { border-color: rgba(245,241,232,.72); }
    .story .noi-result { border-color: rgba(245,241,232,.62); color: var(--paper); }
    .story .valuation-equation { border-color: rgba(245,241,232,.2); background: rgba(245,241,232,.055); }
    .story .valuation-term span, .story .operator { color: rgba(245,241,232,.56); }
    .story .legacy-row { border-color: rgba(245,241,232,.2); background: rgba(245,241,232,.045); }
    .story .legacy-row span, .story .qualified span:last-child, .story .signal-list span, .story .gate-list span, .story .awareness-output span { color: rgba(245,241,232,.56); }
    .story .inventory, .story .gate-list span, .story .signal-list span, .story .recommendation-box { border-color: rgba(245,241,232,.15); }
    .story .hotel-dot { background: rgba(139,188,197,.48); }
    .story .engine-arrow { background: rgba(245,241,232,.28); }
    .story .engine-arrow::after { border-color: rgba(245,241,232,.62); }
    .story .qualified-count, .story .awareness-output strong { color: var(--paper); }

    .chapters { position: relative; z-index: 5; width: min(42vw, 590px); margin: -100vh clamp(24px, 6vw, 104px) 0 auto; padding: 0; }
    .chapter { min-height: 100vh; padding: 15vh 0 12vh clamp(24px, 4vw, 64px); justify-content: center; opacity: .2; text-shadow: 0 7px 38px rgba(2,8,6,.92); }
    .chapter.is-active { opacity: 1; }
    .chapter h3 { max-width: 530px; color: var(--paper); font-size: clamp(44px, 4.5vw, 68px); }
    .chapter p { max-width: 500px; color: rgba(245,241,232,.72); }
    .chapter .text-link { border-color: rgba(154,195,211,.44); color: #9ac3d3; }
    .story[data-story="idt"] .chapter .text-link { border-color: rgba(145,203,189,.44); color: #91cbbd; }
    .story[data-story="idt"] .visual-index { right: clamp(24px, 5vw, 82px); left: auto; }
    .story[data-story="idt"] .chapters { margin-right: auto; margin-left: clamp(24px, 6vw, 104px); }
    .story[data-story="idt"] .chapter { padding-right: clamp(24px, 4vw, 64px); padding-left: 0; }

    .framework-bridge { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--paper-deep); }
    .framework-bridge-inner { min-height: 68vh; display: grid; grid-template-columns: .65fr 1.35fr; gap: clamp(50px, 8vw, 130px); align-items: center; }
    .framework-bridge p { max-width: 280px; margin: 0; color: var(--muted); font-family: var(--display); font-size: 21px; line-height: 1.35; }
    .framework-bridge h2 { max-width: 840px; margin: 0; font-family: var(--display); font-size: clamp(52px, 6.5vw, 86px); font-weight: 400; letter-spacing: -.045em; line-height: .95; }

    .thinking { padding: 150px 0; border-top: 1px solid var(--line); }
    .thinking-head { display: flex; align-items: end; justify-content: space-between; gap: 50px; margin-bottom: 68px; }
    .thinking h2 { margin: 0; font-family: var(--display); font-size: clamp(52px, 6vw, 78px); font-weight: 400; letter-spacing: -.045em; line-height: .98; }
    .posts { border-top: 1px solid var(--line-strong); }
    .post { position: relative; display: grid; grid-template-columns: 100px 1fr 220px; gap: 34px; align-items: center; overflow: hidden; padding: 34px 0; border-bottom: 1px solid var(--line); text-decoration: none; }
    .post::before { position: absolute; inset: 0; z-index: -1; background: rgba(255,255,255,.32); content: ""; opacity: 0; transform: scaleY(.8); transition: opacity 220ms ease, transform 220ms ease; }
    .post:hover::before { opacity: 1; transform: scaleY(1); }
    .post-index { color: var(--blue); font-family: var(--display); font-size: 24px; }
    .post-title { margin: 0; font-family: var(--display); font-size: clamp(25px, 3vw, 38px); font-weight: 400; letter-spacing: -.025em; line-height: 1.04; }
    .post-meta { color: var(--muted); font-size: 11px; line-height: 1.7; text-align: right; }

    .bio { padding: 0 0 150px; }
    .bio-panel { display: grid; grid-template-columns: .82fr 1.18fr; border-top: 1px solid var(--line-strong); border-bottom: 1px solid var(--line-strong); color: var(--ink); }
    .bio-image { min-height: 600px; background: var(--paper-deep); }
    .bio-image img { width: 100%; height: 100%; object-fit: cover; object-position: 50% 27%; filter: saturate(.68) contrast(1.04); }
    .bio-copy { display: flex; flex-direction: column; justify-content: center; padding: clamp(48px, 8vw, 104px) 0 clamp(48px, 8vw, 104px) clamp(48px, 8vw, 104px); }
    .bio-copy h2 { max-width: 600px; margin: 0; font-family: var(--display); font-size: clamp(42px, 5vw, 68px); font-weight: 400; letter-spacing: -.04em; line-height: 1; }
    .bio-copy > p { max-width: 580px; margin: 28px 0 0; color: var(--muted); font-size: 17px; }
    .stats { display: grid; grid-template-columns: repeat(3,1fr); gap: 24px; margin-top: 52px; padding-top: 28px; border-top: 1px solid var(--line); }
    .stat strong { display: block; font-family: var(--display); font-size: 32px; font-weight: 400; }
    .stat span { color: var(--muted); font-size: 11px; }

    .subscribe { padding: 95px 0; border-top: 1px solid var(--line); }
    .subscribe-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 70px; align-items: end; }
    .subscribe h2 { max-width: 660px; margin: 0; font-family: var(--display); font-size: clamp(45px, 5vw, 66px); font-weight: 400; letter-spacing: -.04em; line-height: 1; }
    .subscribe-form { display: flex; gap: 12px; padding-bottom: 8px; border-bottom: 1px solid var(--line-strong); }
    .subscribe-form input { flex: 1; min-width: 0; padding: 11px 0; border: 0; outline: 0; background: transparent; color: var(--ink); }
    .subscribe-form input::placeholder { color: var(--muted); }
    .subscribe-form button { padding: 11px 0 11px 18px; border: 0; background: transparent; color: var(--ink); font-size: 13px; font-weight: 500; cursor: pointer; }

    footer { padding: 28px 0 38px; border-top: 1px solid var(--line); color: var(--muted); font-size: 11px; }
    .footer-inner { display: flex; justify-content: space-between; gap: 30px; }
    .footer-links { display: flex; gap: 22px; }
    .footer-links a { text-decoration: none; }

    .reveal { opacity: 0; transform: translateY(28px); transition: opacity 720ms ease, transform 720ms cubic-bezier(.18,.72,.2,1); }
    .reveal.is-visible { opacity: 1; transform: none; }

    @media (min-width: 981px) and (max-width: 1200px) {
      .hero-inner { grid-template-columns: minmax(0, 1.18fr) minmax(380px, .82fr); gap: 32px; }
      .hero h1 { font-size: clamp(58px, 6vw, 74px); }
      .hero-system-ring.hr1 { width: 380px; height: 380px; }
      .hero-system-ring.hr2 { width: 286px; height: 286px; }
      .hero-system-ring.hr3 { width: 194px; height: 194px; }
      .hero-system-core { width: 104px; height: 104px; }
    }

    @media (max-width: 980px) {
      .shell { width: min(100% - 40px, var(--site)); }
      .nav-links a:not(.nav-cta) { display: none; }
      .menu-button { display: inline-block; }
      .nav-links .nav-cta { display: none; }
      .hero { min-height: 0; }
      .hero-inner { grid-template-columns: 1fr; min-height: 0; padding-top: 78px; }
      .hero-system { min-height: 500px; max-width: 560px; width: 100%; margin: 0 auto; }
      .section-intro { grid-template-columns: 1fr; gap: 34px; }
      .story-grid { grid-template-columns: 1fr; }
      .story-visual { top: 74px; z-index: 2; min-height: 0; padding: 30px 0; background: var(--paper); }
      .visual-stage { max-width: 620px; margin: 0 auto; aspect-ratio: 1.35; }
      .chart-scene { inset: 58px 24px 56px; }
      .chapters { padding: 0 0 50px; }
      .chapter { min-height: 62vh; padding: 90px 12px 70px; }
      .thinking-head { align-items: start; flex-direction: column; }
      .post { grid-template-columns: 60px 1fr; }
      .post-meta { grid-column: 2; text-align: left; }
      .bio-panel { grid-template-columns: 1fr; }
      .bio-image { min-height: 520px; }
      .subscribe-inner { grid-template-columns: 1fr; gap: 48px; }
    }

    @media (min-width: 981px) {
      .mobile-nav, .mobile-nav.is-open { display: none !important; }
    }

    @media (max-width: 640px) {
      .shell { width: min(100% - 28px, var(--site)); }
      .nav-inner { min-height: 64px; }
      .brand-name { font-size: 19px; }
      .hero-inner { padding: 64px 0 74px; }
      .hero h1 { font-size: 50px; }
      .hero-deck { font-size: 17px; }
      .hero-system { min-height: 350px; }
      .hero-system-ring.hr1 { width: 310px; height: 310px; }
      .hero-system-ring.hr2 { width: 230px; height: 230px; }
      .hero-system-ring.hr3 { width: 154px; height: 154px; }
      .hero-system-core { width: 82px; height: 82px; font-size: 15px; }
      .hero-system-ring span { font-size: 9px; }
      .hero-system-caption { bottom: 0; }
      .proof-inner { grid-template-columns: 1fr; gap: 18px; padding: 26px 0; }
      .proof-names { flex-wrap: wrap; justify-content: flex-start; gap: 10px 24px; }
      .section-intro { padding: 105px 0 65px; }
      .section-intro h2 { font-size: 48px; }
      .visual-stage { aspect-ratio: .7; border-radius: 22px; }
      .visual-index { top: 18px; left: 18px; }
      .chart-scene { inset: 55px 12px 72px; }
      .silo-grid { gap: 10px; padding: 10px 4px; }
      .silo-card { padding: 14px 10px; }
      .silo-card strong { font-size: 16px; }
      .silo-gap { width: 96px; }
      .architecture { grid-template-columns: 1fr; gap: 9px; }
      .os-layer { min-height: 64px; padding: 8px 10px; }
      .layer-copy span { font-size: 10px; }
      .principles-rail { flex-direction: row; gap: 5px; padding: 8px 0 0; border-top: 1px solid var(--line); border-left: 0; }
      .principles-rail .chart-label { display: none; }
      .principle-pill { flex: 1; padding: 8px 5px; border-top: 2px solid var(--blue); border-left: 0; font-size: 10px; text-align: center; }
      .economics-map { padding: 0; }
      .economic-drivers { gap: 6px; }
      .driver { padding: 10px 5px; }
      .driver strong { font-size: 14px; }
      .driver span { font-size: 10px; }
      .enable-ribbon strong { display: block; margin: 0 0 2px; }
      .valuation-equation { gap: 5px; padding: 10px 6px; }
      .valuation-term strong { font-size: 13px; }
      .qualification-engine { grid-template-columns: .8fr 24px 1.25fr 24px .6fr; }
      .inventory { grid-template-columns: repeat(4,1fr); gap: 5px; padding: 8px; }
      .inventory .hotel-dot:nth-child(n+17) { display: none; }
      .gate { padding: 10px 8px; }
      .gate h4, .qualified h4 { font-size: 15px; }
      .gate-list { grid-template-columns: 1fr; gap: 4px; }
      .gate-list span { padding: 4px; font-size: 10px; }
      .qualified-count { font-size: 32px; }
      .recommendation-system { grid-template-columns: 1fr; grid-template-rows: auto 16px auto 16px auto; padding: 0 12px; }
      .recommendation-system > * { min-width: 0; }
      .recommendation-system .engine-arrow { width: 1px; height: 16px; justify-self: center; }
      .recommendation-system .engine-arrow::after { top: auto; right: -4px; bottom: 0; transform: rotate(135deg); }
      .recommendation-box { padding: 8px 9px; }
      .recommendation-box h4 { font-size: 15px; }
      .signal-list { gap: 4px; }
      .signal-list span { padding: 4px; font-size: 10px; }
      .shortlist { margin: 6px 0 8px; }
      .shortlist span { width: 26px; height: 32px; }
      .awareness-output { padding-top: 7px; }
      .chapter { min-height: 66vh; padding-right: 4px; padding-left: 4px; }
      .chapter h3 { font-size: 38px; }
      .thinking { padding: 105px 0; }
      .thinking h2 { font-size: 48px; }
      .post { grid-template-columns: 42px 1fr; gap: 14px; }
      .post-index { font-size: 18px; }
      .post-title { font-size: 26px; }
      .bio { padding-bottom: 105px; }
      .bio-panel { border-radius: 0; }
      .bio-image { min-height: 430px; }
      .bio-copy { padding: 42px 28px; }
      .stats { grid-template-columns: 1fr; gap: 18px; }
      .subscribe-form { align-items: stretch; flex-direction: column; }
      .subscribe-form button { align-self: flex-start; padding-left: 0; }
      .footer-inner { flex-direction: column; }
    }

    @media (max-width: 980px) {
      .story-visual { top: 0; height: 100svh; padding: 0; background: transparent; }
      .visual-stage { width: 100%; height: 100%; max-width: none; margin: 0; aspect-ratio: auto; border-radius: 0; }
      .visual-stage::before { background: linear-gradient(0deg, rgba(17,27,24,.99) 0%, rgba(17,27,24,.92) 35%, rgba(17,27,24,.08) 70%), radial-gradient(circle at 50% 34%, rgba(89,151,169,.2), transparent 46%); }
      .idt-stage::before { background: linear-gradient(0deg, rgba(11,21,23,.99) 0%, rgba(11,21,23,.92) 35%, rgba(11,21,23,.08) 70%), radial-gradient(circle at 50% 34%, rgba(75,154,137,.2), transparent 46%); }
      .chapters { width: 100%; margin: -100svh 0 0; }
      .chapter { min-height: 100svh; padding: 48vh 7vw 9vh; justify-content: flex-end; }
      .story[data-story="idt"] .chapters { margin: -100svh 0 0; }
      .story[data-story="idt"] .chapter { padding: 48vh 7vw 9vh; }
      .story[data-story="idt"] .visual-index { right: auto; left: clamp(24px, 5vw, 82px); }
      .chapter h3 { max-width: 650px; font-size: clamp(38px, 7vw, 58px); }
      .chapter p { max-width: 620px; margin-top: 16px; font-size: 15px; line-height: 1.55; }
      .visual-index { top: 82px; }
      .chart-scene { inset: 17vh 7vw 49vh; }
      .framework-bridge-inner { min-height: 64vh; grid-template-columns: 1fr; gap: 30px; align-content: center; }
      .framework-bridge p { max-width: 340px; }
    }

    @media (max-width: 640px) {
      .visual-index { top: 76px; left: 18px; }
      .chapter { padding: 45vh 18px 8vh; }
      .story[data-story="idt"] .chapter { padding: 45vh 18px 8vh; }
      .story[data-story="idt"] .visual-index { right: auto; left: 18px; }
      .chapter h3 { font-size: 38px; }
      .chapter .text-link { margin-top: 18px; }
      .chart-scene { inset: 15vh 18px 52vh; }
      .framework-bridge h2 { font-size: 45px; }
    }

    @media (prefers-reduced-motion: reduce) {
      html { scroll-behavior: auto; }
      *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; transition-duration: .01ms !important; }
      .reveal { opacity: 1; transform: none; }
      .hero-system { transform: none !important; }
      .hero h1, .hero-deck, .hero-actions, .hero-system { opacity: 1 !important; clip-path: none !important; filter: none !important; }
      .hero::after { display: none; }
    }

    /* Exact orbital markers: the dot owns the path; the label only annotates it. */
    .hero-system-ring span::after { display:none; }
    .hero-system-ring::after {
      position:absolute;
      top:0;
      left:50%;
      width:9px;
      height:9px;
      border:4px solid var(--paper);
      border-radius:50%;
      background:var(--ring-color);
      box-shadow:0 0 0 1px var(--line),0 4px 15px color-mix(in srgb,var(--ring-color) 28%,transparent);
      box-sizing:content-box;
      content:"";
      transform:translate(-50%,-50%);
    }
    .hero-system .hero-system-ring span {
      top:0;
      right:auto;
      bottom:auto;
      left:50%;
      font-family:var(--sans);
      font-size:11px;
      letter-spacing:.02em;
      text-transform:none;
      transform:translate(-50%,-165%);
    }
    .hero-system-ring.hr1 { animation:heroOrbitClockwise 24s -6s linear infinite; }
    .hero-system-ring.hr2 { animation:heroOrbitCounter 31s -14s linear infinite; }
    .hero-system-ring.hr3 { animation:heroOrbitClockwise 18s -3s linear infinite; }
    .hero-system-ring.hr1 span { animation:heroPathLabelClockwise 24s -6s linear infinite; }
    .hero-system-ring.hr2 span { animation:heroPathLabelCounter 31s -14s linear infinite; }
    .hero-system-ring.hr3 span { animation:heroPathLabelClockwise 18s -3s linear infinite; }
    @keyframes heroPathLabelClockwise { to { transform:translate(-50%,-165%) rotate(-360deg); } }
    @keyframes heroPathLabelCounter { to { transform:translate(-50%,-165%) rotate(360deg); } }