@layer reset, base, layout, components, motion, responsive;

@layer reset {
  *, *::before, *::after { box-sizing: border-box; }
  html { scroll-behavior: smooth; }
  body, h1, h2, h3, p, ul { margin: 0; }
  ul { padding: 0; list-style: none; }
  button, input { font: inherit; }
  a { color: inherit; text-decoration: none; }
  img, svg { display: block; max-width: 100%; }
}

@layer base {
  :root {
    --ink: #101513;
    --paper: #f2f0e8;
    --paper-deep: #e6e2d6;
    --lime: #caff63;
    --orange: #ff6b45;
    --blue: #8db8ff;
    --pink: #e7a6c4;
    --muted: #69716c;
    --line: rgba(16, 21, 19, 0.18);
    --line-inverse: rgba(242, 240, 232, 0.18);
    --display: "Arial Narrow", "Roboto Condensed", "Helvetica Neue", Arial, sans-serif;
    --sans: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    --serif: Iowan Old Style, Baskerville, "Times New Roman", serif;
    --ease: cubic-bezier(0.22, 1, 0.36, 1);
    --header-h: 88px;
  }

  [data-theme="light"] {
    --ink: #17203a;
    --paper: #f8f5ed;
    --paper-deep: #e8e8e1;
    --lime: #76e5ef;
    --orange: #705cf2;
    --blue: #ffc66e;
    --pink: #f0b4cb;
    --muted: #62697a;
  }

  html { scroll-padding-top: calc(var(--header-h) + 20px); }

  body {
    min-width: 320px;
    overflow-x: hidden;
    background: var(--paper);
    color: var(--ink);
    font-family: var(--sans);
    font-size: 16px;
    line-height: 1.6;
    text-rendering: optimizeLegibility;
  }

  ::selection { background: var(--orange); color: #fff; }

  .sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
  }

  .skip-link {
    position: fixed;
    z-index: 1000;
    top: 12px;
    left: 12px;
    padding: 10px 14px;
    background: var(--lime);
    color: #111;
    transform: translateY(-160%);
  }

  .skip-link:focus { transform: translateY(0); }
}

@layer layout {
  .section-shell {
    width: min(100% - 64px, 1440px);
    margin-inline: auto;
  }

  .site-header {
    position: fixed;
    z-index: 100;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-h);
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    padding: 0 32px;
    color: var(--paper);
    border-bottom: 1px solid transparent;
    transition: background .35s ease, color .35s ease, border-color .35s ease, height .35s ease;
  }

  .site-header.is-scrolled {
    height: 72px;
    background: color-mix(in srgb, var(--paper) 88%, transparent);
    color: var(--ink);
    border-color: var(--line);
    backdrop-filter: blur(18px);
  }

  .brand { display: inline-flex; align-items: center; gap: 12px; justify-self: start; }
  .brand-mark {
    width: 42px;
    height: 42px;
    display: grid;
    place-items: center;
    border: 1px solid currentColor;
    border-radius: 50%;
    font: 700 12px/1 var(--sans);
    letter-spacing: .08em;
  }

  .brand-name { font: 650 11px/1.08 var(--sans); text-transform: uppercase; letter-spacing: .13em; }

  .site-nav { display: flex; gap: 30px; align-items: center; }
  .site-nav a { position: relative; font-size: 12px; font-weight: 650; text-transform: uppercase; letter-spacing: .13em; }
  .site-nav a::after {
    content: "";
    position: absolute;
    left: 0;
    right: 100%;
    bottom: -7px;
    height: 1px;
    background: currentColor;
    transition: right .3s var(--ease);
  }
  .site-nav a:hover::after, .site-nav a.is-active::after { right: 0; }

  .theme-toggle {
    justify-self: end;
    width: 42px;
    height: 42px;
    border: 1px solid currentColor;
    border-radius: 50%;
    color: inherit;
    background: transparent;
    cursor: pointer;
  }
  .theme-icon { display: inline-block; font-size: 19px; transition: transform .5s var(--ease); }
  .theme-toggle:hover .theme-icon { transform: rotate(180deg); }
  .menu-toggle { display: none; }

  .hero {
    position: relative;
    min-height: 820px;
    height: max(820px, 100svh);
    display: grid;
    grid-template-columns: minmax(0, 1.08fr) minmax(420px, .92fr);
    align-items: center;
    gap: 4vw;
    padding: 150px max(32px, calc((100vw - 1440px) / 2 + 32px)) 90px;
    overflow: hidden;
    background: #101513;
    color: #f3f1e9;
  }

  .hero::before {
    content: "";
    position: absolute;
    width: 54vw;
    height: 54vw;
    right: -18vw;
    top: -28vw;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(202,255,99,.16) 0, rgba(202,255,99,0) 67%);
    pointer-events: none;
  }

  .hero-noise {
    position: absolute;
    inset: 0;
    opacity: .08;
    pointer-events: none;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.65'/%3E%3C/svg%3E");
  }

  .hero-copy { position: relative; z-index: 2; max-width: 900px; }
  .eyebrow {
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .18em;
  }
  .hero .eyebrow { display: flex; align-items: center; gap: 12px; color: var(--lime); }
  .hero .eyebrow::before { content: ""; width: 35px; height: 1px; background: currentColor; }

  .hero h1 {
    max-width: 940px;
    margin: 26px 0 32px;
    font: 700 clamp(4.5rem, 7.35vw, 8.5rem)/.82 var(--display);
    text-transform: uppercase;
    letter-spacing: -.064em;
  }
  .hero h1 em, .section-title em, .toolbox h2 em, .contact h2 em {
    display: inline-block;
    font-family: var(--serif);
    font-weight: 400;
    text-transform: none;
    letter-spacing: -.04em;
  }
  .hero h1 em { color: var(--lime); }
  .hero-intro { max-width: 710px; color: rgba(243,241,233,.72); font-size: clamp(1rem, 1.3vw, 1.22rem); line-height: 1.58; }
  .hero-actions { display: flex; align-items: center; gap: 36px; margin-top: 38px; }

  .button {
    display: inline-flex;
    align-items: center;
    justify-content: space-between;
    gap: 36px;
    min-width: 220px;
    padding: 16px 20px;
    border-radius: 2px;
    font-size: 12px;
    font-weight: 750;
    letter-spacing: .08em;
    text-transform: uppercase;
    transition: transform .25s var(--ease), background .25s ease;
  }
  .button:hover { transform: translateY(-3px); }
  .button-primary { background: var(--lime); color: #101513; }
  .button-primary:hover { background: #ddff9b; }
  .text-link { font-size: 12px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; border-bottom: 1px solid rgba(255,255,255,.3); }

  .system-portrait {
    position: relative;
    z-index: 2;
    aspect-ratio: 1;
    width: min(44vw, 610px);
    justify-self: end;
    border: 1px solid rgba(243,241,233,.2);
    border-radius: 50%;
    background: radial-gradient(circle at 50% 50%, rgba(141,184,255,.08), rgba(0,0,0,0) 48%);
    transform-style: preserve-3d;
  }
  .system-portrait::before, .system-portrait::after {
    content: "";
    position: absolute;
    background: rgba(243,241,233,.12);
  }
  .system-portrait::before { left: 50%; top: -2%; bottom: -2%; width: 1px; }
  .system-portrait::after { top: 50%; left: -2%; right: -2%; height: 1px; }
  .map-caption, .map-status { position: absolute; z-index: 4; font: 650 9px/1 var(--sans); letter-spacing: .14em; text-transform: uppercase; color: rgba(243,241,233,.5); }
  .map-caption { top: 12%; left: 10%; }
  .map-status { display: flex; align-items: center; gap: 7px; bottom: 12%; right: 7%; }
  .map-status i { width: 7px; height: 7px; border-radius: 50%; background: var(--lime); box-shadow: 0 0 13px var(--lime); }
  .map-lines { position: absolute; inset: 2%; width: 96%; height: 96%; overflow: visible; }
  .orbit { fill: none; stroke: rgba(243,241,233,.12); stroke-width: 1; stroke-dasharray: 4 8; transform-origin: center; }
  .orbit-two { stroke: rgba(202,255,99,.18); stroke-dasharray: 2 11; }
  .connector { fill: none; stroke: rgba(243,241,233,.28); stroke-width: 1; stroke-dasharray: 4 5; }
  .pulse-ring { fill: rgba(202,255,99,.04); stroke: var(--lime); stroke-width: 1.2; filter: url(#glow); }
  .map-node { position: absolute; z-index: 5; display: flex; flex-direction: column; text-align: center; transform: translate(-50%, -50%); }
  .map-node span { margin-bottom: 5px; color: var(--lime); font: 650 8px/1 var(--sans); letter-spacing: .16em; text-transform: uppercase; }
  .map-node strong { font: 650 10px/1 var(--sans); letter-spacing: .1em; text-transform: uppercase; }
  .map-core { left: 50%; top: 50%; width: 118px; height: 118px; justify-content: center; border-radius: 50%; background: #151d19; box-shadow: 0 0 0 1px rgba(202,255,99,.4), 0 16px 70px rgba(0,0,0,.5); }
  .map-core span { color: rgba(243,241,233,.55); }
  .map-core strong { color: var(--lime); font-size: 14px; }
  .node-reliability { left: 25%; top: 23%; }
  .node-identity { left: 81%; top: 23%; }
  .node-migration { left: 84%; top: 69%; }
  .node-research { left: 20%; top: 74%; }

  .hero-index {
    position: absolute;
    z-index: 2;
    left: max(32px, calc((100vw - 1440px) / 2 + 32px));
    bottom: 28px;
    display: flex;
    gap: 20px;
    color: rgba(243,241,233,.38);
    font: 650 9px/1 var(--sans);
    letter-spacing: .16em;
    text-transform: uppercase;
  }
  .hero-index span:not(:last-child)::after { content: " /"; margin-left: 20px; color: var(--orange); }

  .ticker { overflow: hidden; border-bottom: 1px solid var(--line); background: var(--lime); color: #101513; }
  .ticker-track { width: max-content; display: flex; align-items: center; gap: 24px; padding: 15px 0; font: 750 12px/1 var(--sans); letter-spacing: .11em; text-transform: uppercase; white-space: nowrap; }
  .ticker-track i { color: var(--orange); font-style: normal; }

  .about { padding-block: 140px 130px; }
  .section-kicker { display: grid; grid-template-columns: 52px auto; align-items: center; gap: 18px; margin-bottom: 72px; font: 750 10px/1 var(--sans); text-transform: uppercase; letter-spacing: .18em; }
  .section-kicker span { display: grid; place-items: center; width: 38px; height: 38px; border: 1px solid var(--line); border-radius: 50%; color: var(--orange); }
  .section-kicker::after { content: ""; height: 1px; margin-left: 12px; background: var(--line); }
  .about-grid { display: grid; grid-template-columns: minmax(400px, .9fr) minmax(430px, 1.1fr); gap: 8vw; }
  .section-title { font: 700 clamp(3.4rem, 5.4vw, 6.6rem)/.9 var(--display); letter-spacing: -.055em; text-transform: uppercase; }
  .section-title em { color: var(--orange); }
  .about-copy { padding-top: 6px; }
  .about-copy p + p { margin-top: 20px; }
  .about-copy p { max-width: 720px; color: var(--muted); font-size: 1.05rem; }
  .about-copy .lead, .research-copy .lead { color: var(--ink); font: 400 clamp(1.35rem, 2vw, 1.95rem)/1.36 var(--serif); }
  .about-facts { margin-top: 94px; padding: 28px 0; display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
  .about-facts div { padding: 0 28px; border-left: 1px solid var(--line); }
  .about-facts div:first-child { padding-left: 0; border-left: 0; }
  .about-facts span, .about-facts strong { display: block; }
  .about-facts span { margin-bottom: 6px; color: var(--muted); font-size: 10px; font-weight: 650; text-transform: uppercase; letter-spacing: .14em; }
  .about-facts strong { font-size: 14px; }

  .work { padding-block: 130px 150px; border-top: 1px solid var(--line); }
  .work-heading { display: grid; grid-template-columns: 1.2fr .8fr; align-items: end; gap: 7vw; margin-bottom: 70px; }
  .section-summary { max-width: 520px; padding-bottom: 10px; color: var(--muted); font-size: 1.06rem; }
  .case-grid { display: grid; grid-template-columns: repeat(12, 1fr); gap: 16px; }
  .case-card { position: relative; min-height: 530px; grid-column: span 5; padding: 26px; overflow: hidden; border: 1px solid var(--line); background: #e9e6dd; display: flex; flex-direction: column; transition: transform .45s var(--ease), box-shadow .45s var(--ease); }
  .case-card:hover { transform: translateY(-7px); box-shadow: 0 25px 60px rgba(20,25,22,.12); }
  .case-feature { grid-column: span 7; background: var(--blue); }
  .case-dark { grid-column: span 5; background: var(--ink); color: var(--paper); }
  .case-wide { grid-column: span 7; min-height: 400px; background: var(--pink); }
  .case-topline { display: flex; justify-content: space-between; padding-bottom: 20px; border-bottom: 1px solid currentColor; font: 700 9px/1 var(--sans); text-transform: uppercase; letter-spacing: .14em; opacity: .65; }
  .case-content { position: relative; z-index: 2; margin-top: auto; }
  .case-label { margin-bottom: 8px; color: inherit; font-size: 10px; font-weight: 750; text-transform: uppercase; letter-spacing: .14em; opacity: .62; }
  .case-card h3 { max-width: 680px; font: 650 clamp(1.65rem, 2.4vw, 2.65rem)/1.02 var(--display); text-transform: uppercase; letter-spacing: -.035em; }
  .case-card p:not(.case-label) { max-width: 720px; margin-top: 18px; opacity: .72; font-size: .96rem; }
  .tag-list { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 24px; }
  .tag-list li { padding: 5px 9px; border: 1px solid currentColor; border-radius: 999px; font-size: 9px; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; opacity: .72; }
  .case-number { position: absolute; top: 96px; right: -18px; color: rgba(16,21,19,.06); font: 750 11rem/.8 var(--display); letter-spacing: -.12em; }
  .migration-visual { position: absolute; left: 9%; right: 9%; top: 21%; height: 160px; display: flex; align-items: center; justify-content: center; }
  .source-stack, .target-stack { position: relative; width: 108px; height: 108px; flex: 0 0 auto; }
  .source-stack i, .target-stack i { position: absolute; inset: 0; border: 1px solid rgba(16,21,19,.55); border-radius: 50%; }
  .source-stack i:nth-child(2), .target-stack i:nth-child(2) { transform: translate(7px,-7px); }
  .source-stack i:nth-child(3), .target-stack i:nth-child(3) { transform: translate(14px,-14px); }
  .source-stack b, .target-stack b { position: absolute; z-index: 2; inset: 0; display: grid; place-items: center; font: 750 10px/1 var(--sans); letter-spacing: .12em; }
  .flow-line { position: relative; width: min(34%, 190px); height: 1px; margin-inline: 22px; background: rgba(16,21,19,.5); }
  .flow-line::after { content: ""; position: absolute; right: -1px; top: -4px; width: 8px; height: 8px; border-top: 1px solid; border-right: 1px solid; transform: rotate(45deg); }
  .flow-line span { position: absolute; top: -3px; width: 7px; height: 7px; border-radius: 50%; background: var(--lime); }
  .flow-line span:nth-child(1) { left: 10%; }
  .flow-line span:nth-child(2) { left: 45%; }
  .flow-line span:nth-child(3) { left: 75%; }
  .flow-line em { position: absolute; top: 12px; left: 50%; transform: translateX(-50%); white-space: nowrap; font: 650 8px/1 var(--sans); text-transform: uppercase; letter-spacing: .12em; }
  .identity-glyph { position: absolute; width: 230px; height: 230px; top: 66px; left: 50%; transform: translateX(-50%); border: 1px solid rgba(242,240,232,.22); border-radius: 50%; }
  .identity-glyph::before, .identity-glyph::after, .identity-glyph span { content: ""; position: absolute; border: 1px solid rgba(202,255,99,.38); border-radius: 50%; }
  .identity-glyph::before { inset: 28px; }
  .identity-glyph::after { inset: 63px; }
  .identity-glyph span:nth-child(1) { width: 11px; height: 11px; background: var(--lime); border: 0; top: 12px; left: 106px; }
  .identity-glyph span:nth-child(2) { width: 8px; height: 8px; background: var(--orange); border: 0; right: 26px; bottom: 55px; }
  .identity-glyph span:nth-child(3) { width: 7px; height: 7px; background: var(--blue); border: 0; left: 44px; bottom: 35px; }
  .identity-glyph b { position: absolute; inset: 0; display: grid; place-items: center; color: var(--lime); font-size: 34px; }
  .split-content { display: grid; grid-template-columns: 1fr 1fr; align-items: end; gap: 7vw; }

  .research { padding-block: 140px 150px; background: var(--ink); color: var(--paper); }
  .research .section-kicker::after { background: var(--line-inverse); }
  .research .section-kicker span { border-color: var(--line-inverse); }
  .research-grid { display: grid; grid-template-columns: minmax(420px, .9fr) minmax(500px, 1.1fr); gap: 8vw; align-items: center; }
  .research-overline { margin-bottom: 24px; color: var(--lime); font: 700 10px/1 var(--sans); letter-spacing: .17em; text-transform: uppercase; }
  .research-copy .section-title em { color: var(--lime); }
  .research-copy .lead { margin-top: 36px; color: var(--paper); }
  .research-copy > p:not(.research-overline):not(.lead) { margin-top: 22px; color: rgba(242,240,232,.66); }
  .research-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 34px; }
  .research-tags span { padding: 7px 11px; border: 1px solid var(--line-inverse); border-radius: 999px; font-size: 9px; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; }
  .research-board { padding: 28px; border: 1px solid rgba(202,255,99,.36); background: #151d19; box-shadow: 20px 20px 0 rgba(202,255,99,.08); }
  .board-header { display: flex; justify-content: space-between; padding-bottom: 18px; border-bottom: 1px solid var(--line-inverse); color: rgba(242,240,232,.5); font: 700 9px/1 var(--sans); letter-spacing: .14em; }
  .metric-primary { display: flex; align-items: flex-end; gap: 8px; padding: 28px 0 12px; }
  .metric-primary strong { font: 700 clamp(5rem, 9vw, 8.5rem)/.72 var(--display); letter-spacing: -.09em; color: var(--lime); }
  .metric-primary sup { align-self: flex-start; margin-top: 5px; color: var(--orange); font: 400 2.8rem/1 var(--serif); }
  .metric-primary span { padding: 0 0 4px 8px; color: rgba(242,240,232,.64); font-size: 11px; line-height: 1.3; text-transform: uppercase; letter-spacing: .08em; }
  .mini-chart { padding: 18px 0 10px; }
  .chart-labels { display: flex; justify-content: space-between; color: rgba(242,240,232,.38); font: 650 8px/1 var(--sans); text-transform: uppercase; letter-spacing: .12em; }
  .mini-chart svg { width: 100%; margin-top: 10px; overflow: visible; }
  .grid-line { fill: none; stroke: rgba(242,240,232,.08); stroke-width: 1; }
  .frontier-shadow { fill: none; stroke: rgba(202,255,99,.13); stroke-width: 13; }
  .frontier-line { fill: none; stroke: var(--lime); stroke-width: 2; }
  .mini-chart circle { fill: #151d19; stroke: var(--orange); stroke-width: 3; }
  .board-stats { display: grid; grid-template-columns: repeat(3, 1fr); padding-top: 20px; border-top: 1px solid var(--line-inverse); }
  .board-stats div { padding: 0 14px; border-left: 1px solid var(--line-inverse); }
  .board-stats div:first-child { padding-left: 0; border-left: 0; }
  .board-stats strong, .board-stats span { display: block; }
  .board-stats strong { color: var(--blue); font: 650 2rem/1 var(--display); }
  .board-stats span { margin-top: 6px; color: rgba(242,240,232,.55); font-size: 9px; line-height: 1.4; text-transform: uppercase; letter-spacing: .08em; }
  .board-note { margin-top: 25px; color: rgba(242,240,232,.38); font-size: 9px; text-transform: uppercase; letter-spacing: .1em; }

  .principles { padding-block: 140px 150px; }
  .principles-heading { margin-bottom: 72px; }
  .principle-list { border-top: 1px solid var(--line); }
  .principle { position: relative; display: grid; grid-template-columns: 70px minmax(250px,.65fr) 1fr 80px; gap: 30px; align-items: center; min-height: 170px; padding: 30px 0; border-bottom: 1px solid var(--line); transition: padding .35s var(--ease), background .35s ease; }
  .principle:hover { padding-left: 18px; padding-right: 18px; background: var(--paper-deep); }
  .principle-index { color: var(--orange); font: 700 10px/1 var(--sans); letter-spacing: .12em; }
  .principle h3 { font: 650 clamp(1.7rem, 2.4vw, 2.5rem)/1 var(--display); text-transform: uppercase; letter-spacing: -.035em; }
  .principle p { max-width: 620px; color: var(--muted); font-size: .98rem; }
  .principle-mark { justify-self: end; font: 400 2.3rem/1 var(--serif); color: var(--orange); }

  .toolbox { padding-block: 120px; overflow: hidden; background: var(--orange); color: #171713; }
  .toolbox-inner { display: grid; grid-template-columns: .72fr 1.28fr; gap: 7vw; align-items: center; }
  .toolbox h2 { margin-top: 20px; font: 700 clamp(3.2rem, 5vw, 5.8rem)/.88 var(--display); letter-spacing: -.055em; text-transform: uppercase; }
  .toolbox h2 em { color: #f7f1df; }
  .tool-cloud { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; justify-content: center; }
  .tool { display: inline-flex; align-items: center; min-height: 44px; padding: 7px 16px; border: 1px solid rgba(23,23,19,.45); border-radius: 999px; font-size: 12px; font-weight: 700; letter-spacing: .04em; text-transform: uppercase; background: rgba(247,241,223,.08); transform: rotate(var(--rotate, -1deg)); }
  .tool:nth-child(2n) { --rotate: 1.5deg; }
  .tool:nth-child(3n) { --rotate: -2deg; }
  .tool-lg { min-height: 62px; padding-inline: 23px; font-size: 17px; }
  .tool-xl { min-height: 86px; padding-inline: 30px; font: 750 28px/1 var(--display); }

  .contact { padding-block: 140px; }
  .contact-card { position: relative; padding: 80px 9vw 70px; overflow: hidden; background: var(--blue); }
  .contact-card .eyebrow { margin-bottom: 22px; }
  .contact h2 { position: relative; z-index: 2; max-width: 960px; font: 700 clamp(3.8rem, 6.3vw, 7.4rem)/.86 var(--display); letter-spacing: -.06em; text-transform: uppercase; }
  .contact h2 em { color: #fff7e6; }
  .contact-card > p:not(.eyebrow) { position: relative; z-index: 2; max-width: 650px; margin-top: 30px; font-size: 1.08rem; }
  .contact-meta { position: relative; z-index: 2; display: flex; align-items: center; justify-content: space-between; margin-top: 52px; padding-top: 24px; border-top: 1px solid rgba(16,21,19,.35); }
  .contact-meta > span { display: flex; gap: 9px; align-items: center; font-size: 11px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; }
  .contact-meta > span i { width: 8px; height: 8px; border-radius: 50%; background: var(--orange); }
  .share-button { padding: 12px 0; border: 0; border-bottom: 1px solid; background: transparent; color: inherit; cursor: pointer; font-size: 11px; font-weight: 750; letter-spacing: .1em; text-transform: uppercase; }
  .contact-orbit { position: absolute; width: 540px; height: 540px; right: -130px; top: -180px; border: 1px solid rgba(16,21,19,.2); border-radius: 50%; }
  .contact-orbit::before, .contact-orbit::after { content: ""; position: absolute; border: 1px solid rgba(16,21,19,.16); border-radius: 50%; }
  .contact-orbit::before { inset: 65px; }
  .contact-orbit::after { inset: 132px; }
  .contact-orbit span { position: absolute; width: 18px; height: 18px; right: 85px; bottom: 80px; border-radius: 50%; background: var(--lime); }
  .contact-orbit i { position: absolute; width: 10px; height: 10px; left: 44px; bottom: 180px; border-radius: 50%; background: var(--orange); }

  .site-footer { display: grid; grid-template-columns: auto 1fr auto auto; gap: 32px; align-items: center; padding-block: 32px 45px; border-top: 1px solid var(--line); }
  .footer-brand { color: var(--ink); }
  .site-footer p { color: var(--muted); font-size: 10px; text-transform: uppercase; letter-spacing: .09em; }
  .back-top { font-size: 10px; font-weight: 750; text-transform: uppercase; letter-spacing: .1em; }

  .page-progress { position: fixed; z-index: 500; top: 0; left: 0; right: 0; height: 2px; background: transparent; }
  .page-progress span { display: block; height: 100%; width: 0; background: var(--orange); }
  .toast { position: fixed; z-index: 600; right: 24px; bottom: 24px; padding: 12px 18px; color: #101513; background: var(--lime); box-shadow: 0 15px 40px rgba(0,0,0,.2); font-size: 11px; font-weight: 750; letter-spacing: .08em; text-transform: uppercase; transform: translateY(30px); opacity: 0; pointer-events: none; transition: .35s var(--ease); }
  .toast.is-visible { transform: translateY(0); opacity: 1; }
}

@layer motion {
  .reveal { opacity: 0; transform: translateY(26px); transition: opacity .8s var(--ease), transform .8s var(--ease); }
  .reveal.is-visible { opacity: 1; transform: translateY(0); }
  .hero .reveal:nth-child(2) { transition-delay: .08s; }
  .hero .reveal:nth-child(3) { transition-delay: .15s; }
  .hero .reveal:nth-child(4) { transition-delay: .22s; }
  .system-portrait.reveal { transform: translateY(26px) scale(.96); }
  .system-portrait.reveal.is-visible { transform: translateY(0) scale(1); }

  .orbit-one { animation: spin 22s linear infinite; }
  .orbit-two { animation: spinReverse 34s linear infinite; }
  .pulse-ring { animation: pulse 3.2s ease-in-out infinite; transform-origin: center; }
  .flow-line span { animation: flow 2.2s ease-in-out infinite; }
  .flow-line span:nth-child(2) { animation-delay: .3s; }
  .flow-line span:nth-child(3) { animation-delay: .6s; }
  .ticker-track { animation: ticker 34s linear infinite; }

  @keyframes spin { to { transform: rotate(360deg); } }
  @keyframes spinReverse { to { transform: rotate(-360deg); } }
  @keyframes pulse { 50% { transform: scale(1.08); opacity: .6; } }
  @keyframes flow { 0%,100% { transform: translateY(0); opacity: .45; } 50% { transform: translateY(-4px); opacity: 1; } }
  @keyframes ticker { to { transform: translateX(-50%); } }

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

@layer responsive {
  @media (max-width: 1120px) {
    .hero { grid-template-columns: 1.12fr .88fr; gap: 2vw; }
    .hero h1 { font-size: clamp(4rem, 7.2vw, 6.5rem); }
    .system-portrait { width: min(43vw, 520px); }
    .research-grid { gap: 5vw; }
    .about-grid { gap: 5vw; }
  }

  @media (max-width: 900px) {
    :root { --header-h: 76px; }
    .section-shell { width: min(100% - 40px, 1440px); }
    .site-header { grid-template-columns: 1fr auto auto; column-gap: 8px; padding-inline: 20px; }
    .brand-name { display: none; }
    .brand, .theme-toggle, .menu-toggle { position: relative; z-index: 3; }
    .menu-toggle { position: relative; z-index: 3; display: block; width: 42px; height: 42px; padding: 0; border: 0; background: transparent; color: inherit; cursor: pointer; }
    .menu-toggle span:not(.sr-only) { position: absolute; left: 9px; width: 24px; height: 1px; background: currentColor; transition: transform .3s ease, top .3s ease; }
    .menu-toggle span:nth-child(2) { top: 17px; }
    .menu-toggle span:nth-child(3) { top: 24px; }
    .menu-toggle[aria-expanded="true"] { border: 1px solid rgba(243,241,233,.6); border-radius: 50%; color: #f3f1e9; }
    .menu-toggle[aria-expanded="true"] span:nth-child(2) { top: 21px; transform: rotate(45deg); }
    .menu-toggle[aria-expanded="true"] span:nth-child(3) { top: 21px; transform: rotate(-45deg); }
    .site-nav { position: fixed; z-index: 2; inset: 0; display: flex; flex-direction: column; justify-content: center; gap: 28px; background: var(--ink); color: var(--paper); transform: translateY(-102%); visibility: hidden; transition: transform .45s var(--ease), visibility 0s linear .45s; }
    .site-nav.is-open { transform: translateY(0); visibility: visible; transition-delay: 0s; }
    .site-nav a { font: 650 2.4rem/1 var(--display); letter-spacing: -.03em; }
    .theme-toggle { margin-left: 4px; }
    body.menu-open { overflow: hidden; }
    body.menu-open .site-header { height: var(--header-h); color: var(--paper); background: transparent; border-color: transparent; backdrop-filter: none; }

    .hero { min-height: 1080px; height: auto; grid-template-columns: 1fr; align-content: start; padding: 135px 20px 70px; }
    .hero-copy { max-width: 790px; }
    .hero h1 { max-width: 760px; font-size: clamp(4.2rem, 13.4vw, 7.2rem); }
    .system-portrait { width: min(90vw, 590px); margin: 55px auto 25px; justify-self: center; }
    .hero-index { display: none; }

    .about, .work, .principles, .contact { padding-block: 100px; }
    .section-kicker { margin-bottom: 52px; }
    .about-grid, .work-heading, .research-grid, .toolbox-inner { grid-template-columns: 1fr; }
    .about-grid { gap: 44px; }
    .about-facts { grid-template-columns: repeat(2, 1fr); row-gap: 28px; }
    .about-facts div:nth-child(3) { padding-left: 0; border-left: 0; }
    .work-heading { gap: 32px; }
    .case-feature, .case-card, .case-dark, .case-wide { grid-column: span 12; }
    .case-card { min-height: 480px; }
    .case-wide { min-height: 400px; }
    .research-grid { gap: 70px; }
    .research-board { max-width: 700px; }
    .toolbox-inner { gap: 60px; }
    .tool-cloud { justify-content: flex-start; }
    .principle { grid-template-columns: 50px minmax(220px,.75fr) 1.25fr 50px; }
    .site-footer { grid-template-columns: auto 1fr auto; }
    .site-footer p:nth-of-type(1) { display: none; }
  }

  @media (max-width: 620px) {
    .section-shell { width: min(100% - 28px, 1440px); }
    .brand-mark, .theme-toggle { width: 38px; height: 38px; }
    .hero { min-height: 920px; padding-inline: 14px; padding-top: 118px; }
    .hero h1 { margin-top: 20px; font-size: clamp(3.55rem, 18.2vw, 5.9rem); line-height: .84; }
    .hero-intro { font-size: .98rem; }
    .hero-actions { align-items: flex-start; flex-direction: column; gap: 20px; }
    .button { min-width: 100%; }
    .system-portrait { margin-top: 42px; }
    .map-node strong { font-size: 8px; }
    .map-core { width: 88px; height: 88px; }
    .map-core strong { font-size: 11px; }
    .map-status, .map-caption { font-size: 7px; }

    .ticker-track { padding-block: 13px; }
    .about, .work, .principles, .contact { padding-block: 80px; }
    .research { padding-block: 80px 90px; }
    .section-kicker { grid-template-columns: 42px auto; margin-bottom: 42px; }
    .section-kicker::after { display: none; }
    .section-title { font-size: clamp(3.1rem, 15vw, 5rem); }
    .about-copy .lead, .research-copy .lead { font-size: 1.25rem; }
    .about-facts { grid-template-columns: 1fr; margin-top: 60px; }
    .about-facts div, .about-facts div:nth-child(3) { padding: 14px 0; border-left: 0; border-top: 1px solid var(--line); }
    .about-facts div:first-child { border-top: 0; }
    .case-grid { gap: 12px; }
    .case-card { min-height: 500px; padding: 20px; }
    .case-feature { min-height: 620px; }
    .case-wide { min-height: 610px; }
    .migration-visual { top: 17%; left: 3%; right: 3%; transform: scale(.82); }
    .split-content { grid-template-columns: 1fr; gap: 28px; }
    .research-board { padding: 18px; box-shadow: 10px 10px 0 rgba(202,255,99,.08); }
    .metric-primary strong { font-size: 5.5rem; }
    .board-stats span { font-size: 7px; }
    .principles-heading { margin-bottom: 46px; }
    .principle { grid-template-columns: 40px 1fr 40px; gap: 12px; padding-block: 28px; }
    .principle h3 { font-size: 1.55rem; }
    .principle p { grid-column: 2 / 4; }
    .principle-mark { grid-column: 3; grid-row: 1; }
    .toolbox { padding-block: 80px; }
    .toolbox h2 { font-size: 3.2rem; }
    .tool-xl { min-height: 62px; font-size: 20px; }
    .tool-lg { min-height: 50px; font-size: 13px; }
    .contact-card { padding: 55px 24px 40px; }
    .contact h2 { font-size: clamp(3.1rem, 15vw, 5.1rem); }
    .contact-meta { align-items: flex-start; flex-direction: column; gap: 20px; }
    .contact-orbit { width: 350px; height: 350px; right: -190px; top: -110px; }
    .site-footer { grid-template-columns: auto 1fr; gap: 18px; }
    .site-footer p:nth-of-type(2) { text-align: right; }
    .back-top { grid-column: 1 / -1; text-align: right; }
  }
}