@layer reset, tokens, base, layout, components, utilities;

@layer reset {
  *, *::before, *::after { box-sizing: border-box; }
  html { scroll-behavior: smooth; }
  body, h1, h2, h3, h4, p, figure, blockquote, dl, dd { margin: 0; }
  ul, ol { margin: 0; padding: 0; }
  img, picture { display: block; max-width: 100%; }
  button, input, textarea, select { font: inherit; }
  button, a { -webkit-tap-highlight-color: transparent; }
}

@layer tokens {
  :root {
    color-scheme: light;
    --font-sans: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
    --page: #f3f5f2;
    --surface: #ffffff;
    --surface-soft: #e9eeeb;
    --surface-strong: #dce4df;
    --ink: #111715;
    --ink-soft: #4f5c57;
    --ink-faint: #73807b;
    --line: rgba(17, 23, 21, 0.14);
    --line-strong: rgba(17, 23, 21, 0.28);
    --brand: #205bff;
    --brand-ink: #0b2b87;
    --brand-soft: #dce5ff;
    --mint: #a8f0d0;
    --cyan: #66d7f0;
    --violet: #b9a8ff;
    --amber: #f5c967;
    --coral: #ff9b83;
    --green: #70d99e;
    --shadow: 0 24px 80px rgba(14, 25, 21, 0.1);
    --shadow-soft: 0 10px 30px rgba(14, 25, 21, 0.07);
    --radius-sm: 0.75rem;
    --radius: 1.15rem;
    --radius-lg: 1.75rem;
    --container: min(1240px, calc(100vw - 3rem));
    --ease: cubic-bezier(.2, .8, .2, 1);
  }

  :root[data-theme="dark"] {
    color-scheme: dark;
    --page: #080c0e;
    --surface: #101618;
    --surface-soft: #151d1f;
    --surface-strong: #202a2d;
    --ink: #f0f5f2;
    --ink-soft: #aebbb6;
    --ink-faint: #7f8d88;
    --line: rgba(235, 245, 240, 0.13);
    --line-strong: rgba(235, 245, 240, 0.26);
    --brand: #7297ff;
    --brand-ink: #c8d5ff;
    --brand-soft: #17264c;
    --shadow: 0 28px 90px rgba(0, 0, 0, 0.35);
    --shadow-soft: 0 12px 34px rgba(0, 0, 0, 0.24);
  }

  @media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
      color-scheme: dark;
      --page: #080c0e;
      --surface: #101618;
      --surface-soft: #151d1f;
      --surface-strong: #202a2d;
      --ink: #f0f5f2;
      --ink-soft: #aebbb6;
      --ink-faint: #7f8d88;
      --line: rgba(235, 245, 240, 0.13);
      --line-strong: rgba(235, 245, 240, 0.26);
      --brand: #7297ff;
      --brand-ink: #c8d5ff;
      --brand-soft: #17264c;
      --shadow: 0 28px 90px rgba(0, 0, 0, 0.35);
      --shadow-soft: 0 12px 34px rgba(0, 0, 0, 0.24);
    }
  }
}

@layer base {
  html { background: var(--page); }
  body {
    min-width: 320px;
    min-height: 100vh;
    overflow-x: hidden;
    background:
      radial-gradient(circle at var(--pointer-x, 80%) var(--pointer-y, 10%), color-mix(in srgb, var(--brand) 10%, transparent), transparent 24rem),
      var(--page);
    color: var(--ink);
    font-family: var(--font-sans);
    font-size: 1rem;
    line-height: 1.6;
    text-rendering: optimizeLegibility;
    transition: background-color .25s ease, color .25s ease;
  }
  a { color: inherit; text-decoration: none; }
  button { color: inherit; }
  ::selection { background: var(--brand); color: #fff; }
  :focus-visible { outline: 3px solid color-mix(in srgb, var(--brand) 78%, white); outline-offset: 4px; }
  h1, h2, h3 { line-height: 1.02; letter-spacing: -0.045em; text-wrap: balance; }
  h1 { font-size: clamp(3.35rem, 8vw, 7.8rem); font-weight: 690; }
  h2 { font-size: clamp(2.35rem, 5vw, 4.8rem); font-weight: 650; }
  h3 { font-size: clamp(1.35rem, 2.2vw, 2rem); font-weight: 640; }
  p { text-wrap: pretty; }
  code { font-family: var(--font-mono); }
}

@layer layout {
  .container { width: var(--container); margin-inline: auto; }
  .section { padding-block: clamp(5.5rem, 10vw, 10rem); }
  .section--compact { padding-block: clamp(3.5rem, 7vw, 6.5rem); }
  .section-head {
    display: grid;
    grid-template-columns: minmax(0, 1.25fr) minmax(18rem, .55fr);
    gap: 4rem;
    align-items: end;
    margin-bottom: clamp(2.5rem, 5vw, 5rem);
  }
  .section-head p { max-width: 38rem; color: var(--ink-soft); font-size: 1.05rem; }
  .grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }
  .grid-3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; }
  .stack { display: grid; gap: 1rem; }
  .site-main { overflow: clip; }
}

@layer components {
  .skip-link {
    position: fixed;
    top: .75rem;
    left: .75rem;
    z-index: 1000;
    padding: .75rem 1rem;
    border-radius: .5rem;
    background: var(--ink);
    color: var(--page);
    transform: translateY(-160%);
  }
  .skip-link:focus { transform: none; }

  .scroll-progress {
    position: fixed;
    inset: 0 auto auto 0;
    z-index: 100;
    width: var(--scroll, 0%);
    height: 2px;
    background: linear-gradient(90deg, var(--brand), var(--cyan), var(--mint));
  }

  .site-header {
    position: fixed;
    inset: 0 0 auto;
    z-index: 90;
    background: color-mix(in srgb, var(--page) 82%, transparent);
    border-bottom: 1px solid transparent;
    backdrop-filter: blur(18px) saturate(130%);
    transition: border-color .2s ease, background-color .2s ease;
  }
  .site-header.is-scrolled { border-color: var(--line); }
  .nav-shell {
    width: var(--container);
    min-height: 4.75rem;
    margin-inline: auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
  }
  .brand { display: inline-flex; align-items: center; gap: .75rem; font-weight: 680; letter-spacing: -.025em; }
  .brand-mark {
    display: grid;
    place-items: center;
    width: 2rem;
    aspect-ratio: 1;
    border: 1px solid var(--line-strong);
    border-radius: 50%;
    font-family: var(--font-mono);
    font-size: .7rem;
    background: var(--surface);
  }
  .nav-links { display: flex; align-items: center; gap: clamp(1rem, 2vw, 2rem); list-style: none; }
  .nav-links a { position: relative; color: var(--ink-soft); font-size: .88rem; font-weight: 600; }
  .nav-links a::after {
    content: "";
    position: absolute;
    left: 0;
    right: 100%;
    bottom: -.4rem;
    height: 2px;
    background: var(--brand);
    transition: right .2s var(--ease);
  }
  .nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--ink); }
  .nav-links a:hover::after, .nav-links a[aria-current="page"]::after { right: 0; }
  .nav-actions { display: flex; align-items: center; gap: .5rem; }
  .icon-button, .menu-button {
    display: grid;
    place-items: center;
    width: 2.75rem;
    aspect-ratio: 1;
    border: 1px solid var(--line);
    border-radius: 50%;
    background: var(--surface);
    cursor: pointer;
  }
  .icon-button:hover, .menu-button:hover { border-color: var(--line-strong); transform: translateY(-1px); }
  .theme-icon { width: 1rem; height: 1rem; border: 1.5px solid currentColor; border-radius: 50%; box-shadow: 0 -7px 0 -6px currentColor, 0 7px 0 -6px currentColor, 7px 0 0 -6px currentColor, -7px 0 0 -6px currentColor; }
  .menu-button { display: none; }
  .menu-button span, .menu-button::before, .menu-button::after { content: ""; display: block; width: 1rem; height: 1px; background: currentColor; transition: transform .2s ease; }
  .menu-button span { margin-block: 4px; }

  .button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: .65rem;
    min-height: 3rem;
    padding: .75rem 1.15rem;
    border: 1px solid var(--line-strong);
    border-radius: 999px;
    font-size: .88rem;
    font-weight: 670;
    line-height: 1;
    transition: transform .2s var(--ease), background-color .2s ease, border-color .2s ease;
  }
  .button:hover { transform: translateY(-2px); }
  .button--solid { background: var(--ink); color: var(--page); border-color: var(--ink); }
  .button--brand { background: var(--brand); color: #fff; border-color: var(--brand); }
  .button--quiet { background: color-mix(in srgb, var(--surface) 75%, transparent); }
  .button .arrow { font-size: 1.15rem; transition: transform .2s ease; }
  .button:hover .arrow { transform: translateX(3px); }

  .eyebrow {
    display: flex;
    align-items: center;
    gap: .65rem;
    margin-bottom: 1.25rem;
    color: var(--ink-soft);
    font-family: var(--font-mono);
    font-size: .73rem;
    font-weight: 700;
    letter-spacing: .12em;
    text-transform: uppercase;
  }
  .eyebrow::before { content: ""; width: 1.5rem; height: 1px; background: currentColor; }

  .hero { min-height: 100svh; padding-top: 7rem; display: grid; align-items: center; }
  .hero-grid { display: grid; grid-template-columns: minmax(0, .92fr) minmax(26rem, .68fr); gap: clamp(2rem, 5vw, 6rem); align-items: center; }
  .hero-copy { position: relative; z-index: 2; min-width: 0; padding-block: 4rem; }
  .hero h1 { max-width: 12ch; overflow-wrap: normal; }
  .hero h1 span { display: block; color: var(--brand); }
  .hero-lede { max-width: 42rem; margin-top: 2rem; color: var(--ink-soft); font-size: clamp(1.08rem, 1.7vw, 1.32rem); line-height: 1.55; }
  .hero-actions { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: 2.25rem; }
  .availability { display: flex; align-items: center; flex-wrap: wrap; max-width: 100%; gap: .75rem; margin-top: 2.25rem; color: var(--ink-faint); font-family: var(--font-mono); font-size: .72rem; text-transform: uppercase; letter-spacing: .08em; }
  .pulse { position: relative; width: .55rem; aspect-ratio: 1; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 5px color-mix(in srgb, var(--green) 18%, transparent); }
  .pulse::after { content: ""; position: absolute; inset: -6px; border: 1px solid var(--green); border-radius: 50%; animation: pulse 2.4s ease-out infinite; }
  @keyframes pulse { 70%, 100% { transform: scale(1.7); opacity: 0; } }

  .hero-visual { position: relative; min-height: 35rem; border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow); isolation: isolate; }
  .hero-visual::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 40%, rgba(3, 10, 24, .72)); pointer-events: none; }
  .hero-image { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: 60% center; transform: scale(1.02); }
  .hero-visual-grid { position: absolute; inset: 0; z-index: 1; background-image: linear-gradient(rgba(255,255,255,.08) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.08) 1px, transparent 1px); background-size: 4.5rem 4.5rem; mask-image: linear-gradient(to bottom, transparent, #000); }
  .signal-card { position: absolute; z-index: 2; display: grid; gap: .3rem; padding: .9rem 1rem; border: 1px solid rgba(255,255,255,.2); border-radius: .8rem; background: rgba(8, 19, 35, .66); color: #eef5ff; backdrop-filter: blur(14px); box-shadow: 0 12px 30px rgba(0,0,0,.25); }
  .signal-card strong { font-size: .88rem; }
  .signal-card span { color: rgba(238,245,255,.63); font-family: var(--font-mono); font-size: .64rem; text-transform: uppercase; letter-spacing: .08em; }
  .signal-card--one { top: 10%; right: 7%; animation: float 5s ease-in-out infinite; }
  .signal-card--two { left: 6%; bottom: 8%; animation: float 6.5s 1s ease-in-out infinite; }
  .signal-card--three { right: 7%; bottom: 23%; animation: float 5.8s .5s ease-in-out infinite; }
  @keyframes float { 50% { transform: translateY(-9px); } }

  .proof-strip { border-block: 1px solid var(--line); overflow: hidden; }
  .proof-track { display: flex; width: max-content; padding-block: 1rem; animation: marquee 30s linear infinite; }
  .proof-item { display: flex; align-items: center; gap: 1.2rem; padding-inline: 1.2rem; color: var(--ink-soft); font-family: var(--font-mono); font-size: .72rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; }
  .proof-item::after { content: "✦"; color: var(--brand); }
  @keyframes marquee { to { transform: translateX(-50%); } }

  .project-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.25rem; align-items: stretch; }
  .project-card {
    position: relative;
    min-width: 0;
    min-height: 38rem;
    display: flex;
    flex-direction: column;
    padding: clamp(1.35rem, 3vw, 2.2rem);
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    background: var(--surface);
    box-shadow: var(--shadow-soft);
    transition: transform .35s var(--ease), border-color .25s ease, box-shadow .35s ease;
  }
  .project-grid .project-card:last-child:nth-child(odd) { grid-column: 1 / -1; min-height: 34rem; }
  .project-card:hover { transform: translateY(-6px); border-color: var(--line-strong); box-shadow: var(--shadow); }
  .project-card::before { content: ""; position: absolute; width: 20rem; aspect-ratio: 1; right: -8rem; top: -9rem; border-radius: 50%; background: color-mix(in srgb, var(--accent, var(--brand)) 24%, transparent); filter: blur(2px); transition: transform .5s var(--ease); }
  .project-card:hover::before { transform: scale(1.15) translate(-1rem, 1rem); }
  .project-meta { position: relative; display: flex; justify-content: space-between; gap: 1rem; color: var(--ink-faint); font-family: var(--font-mono); font-size: .67rem; letter-spacing: .08em; text-transform: uppercase; }
  .project-meta span { white-space: nowrap; }
  .project-media { position: relative; height: 14rem; margin-block: 1.5rem 2rem; overflow: hidden; border: 1px solid color-mix(in srgb, var(--accent, var(--brand)) 25%, var(--line)); border-radius: 1rem; background: #0b1117; }
  .project-media::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 60%, rgba(2, 8, 14, .25)); pointer-events: none; }
  .project-media img { width: 100%; height: 100%; object-fit: cover; transition: transform .7s var(--ease), filter .3s ease; }
  .project-card:hover .project-media img { transform: scale(1.035); }
  .project-glyph { position: relative; height: 14rem; margin-block: 1.5rem 2rem; overflow: hidden; border: 1px solid var(--line); border-radius: 1rem; background: radial-gradient(circle at 80% 20%, color-mix(in srgb, var(--accent, var(--brand)) 32%, transparent), transparent 38%), linear-gradient(145deg, var(--surface-soft), var(--surface)); }
  .project-glyph::before, .project-glyph::after { content: ""; position: absolute; border: 1px solid var(--line-strong); }
  .project-glyph::before { inset: 2rem 20% 2rem 8%; border-radius: 50%; box-shadow: 2.4rem 0 0 -1px var(--surface), 2.4rem 0 0 0 var(--line-strong); }
  .project-glyph::after { width: 3.5rem; height: 3.5rem; right: 10%; bottom: 0; border-radius: .6rem; background: color-mix(in srgb, var(--accent, var(--brand)) 32%, var(--surface)); transform: rotate(12deg); }
  .project-card h3 { position: relative; max-width: 23ch; font-size: clamp(1.75rem, 2.6vw, 2.35rem); text-wrap: balance; }
  .project-card > p { position: relative; max-width: 60ch; margin-top: 1rem; color: var(--ink-soft); }
  .tag-list { position: relative; display: flex; flex-wrap: wrap; gap: .45rem; margin-top: auto; padding-top: 1.5rem; list-style: none; }
  .tag { padding: .38rem .65rem; border: 1px solid var(--line); border-radius: 999px; color: var(--ink-soft); font-family: var(--font-mono); font-size: .62rem; }
  .project-link { position: absolute; inset: 0; z-index: 3; border-radius: inherit; }
  .project-link span { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); }
  .project-card[data-accent="cyan"] { --accent: var(--cyan); }
  .project-card[data-accent="violet"] { --accent: var(--violet); }
  .project-card[data-accent="green"] { --accent: var(--green); }
  .project-card[data-accent="amber"] { --accent: var(--amber); }
  .project-card[data-accent="blue"] { --accent: var(--brand); }
  .project-card[data-accent="coral"] { --accent: var(--coral); }

  .case-visual-section { padding-bottom: clamp(2rem, 5vw, 4rem); }
  .case-visual { position: relative; height: clamp(24rem, 50vw, 42rem); overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius-lg); background: #0b1117; box-shadow: var(--shadow); }
  .case-visual img { width: 100%; height: 100%; object-fit: cover; }

  .filter-bar { display: flex; flex-wrap: wrap; gap: .5rem; margin-bottom: 2rem; }
  .filter-button { padding: .62rem .9rem; border: 1px solid var(--line); border-radius: 999px; background: transparent; color: var(--ink-soft); cursor: pointer; font-size: .78rem; font-weight: 650; }
  .filter-button:hover, .filter-button[aria-pressed="true"] { background: var(--ink); color: var(--page); border-color: var(--ink); }
  .project-card[hidden] { display: none; }

  .method-grid { display: grid; grid-template-columns: repeat(4, 1fr); border: 1px solid var(--line); border-radius: var(--radius-lg); overflow: hidden; background: var(--surface); }
  .method-step { position: relative; min-height: 18rem; padding: 1.5rem; border-right: 1px solid var(--line); }
  .method-step:last-child { border-right: 0; }
  .method-number { color: var(--brand); font-family: var(--font-mono); font-size: .72rem; }
  .method-step h3 { margin-top: 4rem; font-size: 1.3rem; letter-spacing: -.03em; }
  .method-step p { margin-top: .8rem; color: var(--ink-soft); font-size: .9rem; }

  .demo-section { background: color-mix(in srgb, var(--brand-soft) 30%, transparent); }
  .demo-app { overflow: hidden; border: 1px solid var(--line-strong); border-radius: var(--radius-lg); background: var(--surface); box-shadow: var(--shadow); }
  .demo-app-bar { display: flex; align-items: center; justify-content: space-between; min-height: 3.5rem; padding: .75rem 1rem; border-bottom: 1px solid var(--line); font-family: var(--font-mono); font-size: .64rem; letter-spacing: .04em; text-transform: uppercase; }
  .demo-app-bar > div { display: flex; align-items: center; gap: .65rem; }
  .demo-app-bar > div > span:last-child { color: var(--ink-faint); }
  .demo-live-dot, .demo-status-dot { display: inline-block; width: .5rem; aspect-ratio: 1; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 .25rem color-mix(in srgb, var(--green) 15%, transparent); }
  .demo-safety { padding: .38rem .55rem; border: 1px solid var(--line); border-radius: 999px; color: var(--ink-faint); }
  .demo-tabs { display: grid; grid-template-columns: repeat(3, 1fr); padding: .65rem; border-bottom: 1px solid var(--line); background: var(--surface-soft); }
  .demo-tabs button { min-width: 0; padding: .8rem 1rem; border: 0; border-radius: .55rem; background: transparent; color: var(--ink-soft); cursor: pointer; font-size: .76rem; font-weight: 700; }
  .demo-tabs button:hover { color: var(--ink); }
  .demo-tabs button[aria-selected="true"] { background: var(--surface); color: var(--ink); box-shadow: 0 1px 0 var(--line), 0 0 0 1px var(--line); }
  .demo-workspace { display: grid; grid-template-columns: minmax(15rem, .75fr) minmax(20rem, 1fr) minmax(16rem, .85fr); min-height: 32rem; }
  .demo-input-panel, .demo-pipeline-panel, .demo-output-panel { min-width: 0; padding: clamp(1.25rem, 3vw, 2.25rem); }
  .demo-pipeline-panel, .demo-output-panel { border-left: 1px solid var(--line); }
  .demo-label { color: var(--ink-faint); font-family: var(--font-mono); font-size: .62rem; letter-spacing: .1em; text-transform: uppercase; }
  .demo-input-panel h3 { margin-top: 5rem; font-size: 1.45rem; }
  .demo-input-panel > p:not(.demo-label) { margin-top: .85rem; color: var(--ink-soft); font-size: .95rem; }
  .demo-context { display: grid; gap: 0; margin-top: 2rem; }
  .demo-context div { display: flex; justify-content: space-between; gap: 1rem; padding: .7rem 0; border-bottom: 1px solid var(--line); font-size: .68rem; }
  .demo-context dt { color: var(--ink-faint); }
  .demo-context dd { margin: 0; color: var(--ink); font-weight: 700; text-align: right; }
  .demo-pipeline { position: relative; display: grid; gap: .75rem; }
  .demo-pipeline::before { content: ""; position: absolute; left: 1.62rem; top: 2.2rem; bottom: 2.2rem; width: 1px; background: var(--line-strong); }
  .demo-stage { position: relative; z-index: 1; display: grid; grid-template-columns: 3.25rem minmax(0, 1fr); align-items: center; min-height: 6rem; padding: .9rem; border: 1px solid var(--line); border-radius: .85rem; background: var(--surface); transition: transform .35s var(--ease), border-color .3s ease, background .3s ease, box-shadow .3s ease; }
  .demo-stage > span { display: grid; place-items: center; width: 1.45rem; aspect-ratio: 1; border: 1px solid var(--line-strong); border-radius: 50%; background: var(--surface); color: var(--ink-faint); font-family: var(--font-mono); font-size: .55rem; transition: color .3s ease, border-color .3s ease, background .3s ease; }
  .demo-stage h3 { font-size: .92rem; }
  .demo-stage p { margin-top: .25rem; color: var(--ink-faint); font-size: .72rem; }
  .demo-stage-signal { display: inline-flex; margin-top: .55rem; padding: .2rem .4rem; border: 1px solid var(--line); border-radius: 999px; color: var(--ink-faint); font-family: var(--font-mono); font-size: .52rem; letter-spacing: .02em; }
  .demo-stage.is-active { transform: translateX(.45rem); border-color: var(--brand); background: var(--brand-soft); box-shadow: 0 0 0 .25rem color-mix(in srgb, var(--brand) 8%, transparent); }
  .demo-stage.is-active > span { border-color: var(--brand); color: var(--brand); animation: demo-pulse .75s ease-in-out infinite alternate; }
  .demo-stage.is-complete { border-color: color-mix(in srgb, var(--green) 50%, var(--line)); }
  .demo-stage.is-complete > span { border-color: var(--green); background: var(--green); color: #07120e; font-size: 0; }
  .demo-stage.is-complete > span::after { content: "✓"; position: absolute; font-size: .7rem; }
  @keyframes demo-pulse { to { box-shadow: 0 0 0 .4rem color-mix(in srgb, var(--brand) 12%, transparent); } }
  .demo-output-panel { display: flex; flex-direction: column; background: color-mix(in srgb, var(--surface-soft) 75%, transparent); }
  .demo-output-top { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
  .demo-output-top > span { padding: .3rem .5rem; border: 1px solid var(--line); border-radius: 999px; color: var(--ink-faint); font-family: var(--font-mono); font-size: .58rem; text-transform: uppercase; }
  .demo-output-placeholder { display: grid; place-items: center; align-content: center; flex: 1; gap: 1rem; color: var(--ink-faint); text-align: center; }
  .demo-output-placeholder[hidden], .demo-result[hidden] { display: none; }
  .demo-output-placeholder > span { display: grid; place-items: center; width: 3rem; aspect-ratio: 1; border: 1px dashed var(--line-strong); border-radius: 50%; color: var(--brand); }
  .demo-output-placeholder p { max-width: 15rem; font-size: .83rem; }
  .demo-result { margin-top: auto; padding-top: 5rem; animation: demo-result-in .45s var(--ease) both; }
  .demo-result h3 { font-size: 1.45rem; }
  .demo-result > p { margin-top: .8rem; color: var(--ink-soft); font-size: .9rem; }
  .demo-signals { display: grid; gap: .55rem; margin-top: 2rem; }
  .demo-signals div { display: flex; justify-content: space-between; gap: 1rem; padding-top: .55rem; border-top: 1px solid var(--line); font-size: .65rem; }
  .demo-signals dt { color: var(--ink-faint); }
  .demo-signals dd { margin: 0; color: var(--green); font-weight: 750; text-align: right; }
  @keyframes demo-result-in { from { opacity: 0; transform: translateY(.75rem); } }
  .demo-controls { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 1rem; border-top: 1px solid var(--line); }
  .demo-controls > p { display: flex; align-items: center; gap: .65rem; color: var(--ink-faint); font-family: var(--font-mono); font-size: .62rem; }
  .demo-controls > div { display: flex; gap: .6rem; }
  .demo-controls .button { min-height: 2.7rem; }
  .demo-app.is-running .demo-status-dot { background: var(--brand); animation: demo-pulse .75s ease-in-out infinite alternate; }
  .demo-app.is-complete .demo-output-top > span { border-color: color-mix(in srgb, var(--green) 55%, var(--line)); color: var(--green); }
  .demo-app[data-demo="knowledge"] { --demo-accent: var(--cyan); }
  .demo-app[data-demo="workflow"] { --demo-accent: var(--violet); }
  .demo-app[data-demo="forecasting"] { --demo-accent: var(--coral); }
  .demo-app .demo-stage.is-active { border-color: var(--demo-accent); box-shadow: 0 0 0 .25rem color-mix(in srgb, var(--demo-accent) 9%, transparent); }
  .demo-app .demo-stage.is-active > span { border-color: var(--demo-accent); color: var(--demo-accent); }
  .demo-app.is-complete .demo-workspace { grid-template-columns: minmax(13rem, .62fr) minmax(18rem, .78fr) minmax(24rem, 1.3fr); }
  .demo-result { width: 100%; margin-top: 0; padding-top: 1.75rem; }
  .demo-result-kicker { color: var(--ink-faint); font-family: var(--font-mono); font-size: .58rem; letter-spacing: .08em; text-transform: uppercase; }

  .demo-chunk-stack { position: relative; display: grid; gap: .7rem; margin-top: .8rem; perspective: 700px; }
  .demo-chunk { padding: .8rem; border: 1px solid color-mix(in srgb, var(--cyan) 42%, var(--line)); border-radius: .7rem; background: color-mix(in srgb, var(--surface) 88%, var(--cyan)); box-shadow: 0 .6rem 1.4rem rgba(0, 20, 35, .06); opacity: 0; transform: translateY(.6rem) translateX(calc(var(--chunk-index) * .45rem)) rotateY(calc((var(--chunk-index) * -1deg))); animation: demo-artifact-in .65s calc(var(--artifact-index) * .16s) var(--ease) forwards; }
  .demo-chunk-head { display: flex; justify-content: space-between; gap: .8rem; color: var(--ink-faint); font-family: var(--font-mono); font-size: .5rem; }
  .demo-chunk-head strong { color: var(--cyan); }
  .demo-chunk > p { margin-top: .5rem; color: var(--ink-soft); font-size: .7rem; line-height: 1.5; }
  .demo-grounded-answer { margin-top: 1.2rem; padding: 1rem; border-left: 3px solid var(--cyan); background: var(--surface); }
  .demo-grounded-answer h3 { margin-top: .55rem; font-size: 1.05rem; }
  .demo-grounded-answer > p:not(.demo-result-kicker) { margin-top: .55rem; color: var(--ink-soft); font-size: .76rem; line-height: 1.55; }
  .demo-source-list { display: grid; gap: .25rem; margin-top: .8rem; padding: .65rem 0 0; border-top: 1px solid var(--line); color: var(--ink-faint); font-family: var(--font-mono); font-size: .5rem; list-style: none; }

  .demo-workflow-result { display: grid; gap: 1rem; }
  .demo-ticket-head { display: flex; align-items: center; gap: .75rem; font-size: .9rem; font-weight: 720; }
  .demo-ticket-icon { display: grid; place-items: center; width: 2rem; aspect-ratio: 1; border-radius: .6rem; background: var(--violet); color: #171126; box-shadow: 0 .5rem 1.25rem color-mix(in srgb, var(--violet) 22%, transparent); }
  .demo-capacity { padding: .9rem; border: 1px solid var(--line); border-radius: .75rem; background: var(--surface); }
  .demo-capacity-head { display: flex; justify-content: space-between; gap: 1rem; font-size: .62rem; }
  .demo-capacity-head span { color: var(--ink-faint); }
  .demo-seat-grid { display: grid; grid-template-columns: repeat(10, 1fr); gap: .3rem; margin-top: .8rem; }
  .demo-seat-grid span { aspect-ratio: .8; border: 1px solid var(--line-strong); border-radius: .25rem .25rem .4rem .4rem; background: var(--surface-soft); opacity: 0; transform: translateY(.45rem); animation: demo-artifact-in .35s calc(var(--artifact-index) * .055s) var(--ease) forwards; }
  .demo-seat-grid .is-filled { border-color: color-mix(in srgb, var(--brand) 45%, var(--line)); background: color-mix(in srgb, var(--brand) 45%, var(--surface)); }
  .demo-seat-grid .is-held { border-color: var(--violet); background: var(--violet); box-shadow: 0 .35rem .8rem color-mix(in srgb, var(--violet) 25%, transparent); }
  .demo-workflow-timeline { position: relative; display: grid; gap: .65rem; padding-left: 1rem; list-style: none; }
  .demo-workflow-timeline::before { content: ""; position: absolute; left: .2rem; top: .45rem; bottom: .45rem; width: 1px; background: color-mix(in srgb, var(--violet) 55%, var(--line)); }
  .demo-workflow-timeline li { position: relative; display: grid; gap: .05rem; padding-left: .55rem; opacity: 0; transform: translateX(-.4rem); animation: demo-artifact-in .45s calc(.45s + var(--artifact-index) * .14s) var(--ease) forwards; }
  .demo-workflow-timeline li::before { content: ""; position: absolute; left: -.99rem; top: .35rem; width: .45rem; aspect-ratio: 1; border-radius: 50%; background: var(--violet); box-shadow: 0 0 0 .25rem color-mix(in srgb, var(--violet) 16%, transparent); }
  .demo-workflow-timeline strong { font-size: .7rem; }
  .demo-workflow-timeline span { color: var(--ink-faint); font-size: .6rem; }
  .demo-receipt { display: flex; justify-content: space-between; gap: 1rem; padding: .65rem .75rem; border-radius: .6rem; background: color-mix(in srgb, var(--green) 10%, var(--surface)); font-size: .62rem; }
  .demo-receipt span { color: var(--ink-faint); }
  .demo-receipt strong { color: var(--green); }

  .demo-forecast-head { display: flex; align-items: end; justify-content: space-between; gap: 1rem; }
  .demo-forecast-head > strong { color: var(--coral); font-size: 1.4rem; }
  .demo-forecast-result svg { width: 100%; height: auto; margin-top: .6rem; overflow: visible; }
  .forecast-grid line { stroke: var(--line); stroke-width: 1; }
  .forecast-boundary { stroke: var(--ink-faint); stroke-width: 1; stroke-dasharray: 4 5; opacity: .7; }
  .forecast-band { opacity: 0; animation: forecast-band-in 1.2s .55s var(--ease) forwards; }
  .forecast-history, .forecast-line, .forecast-baseline { fill: none; stroke-linecap: round; stroke-linejoin: round; }
  .forecast-history { stroke: var(--brand); stroke-width: 4; stroke-dasharray: 420; stroke-dashoffset: 420; animation: forecast-line-in 1.45s var(--ease) forwards; }
  .forecast-line { stroke: var(--coral); stroke-width: 4; stroke-dasharray: 240; stroke-dashoffset: 240; animation: forecast-line-in 1.35s .72s var(--ease) forwards; }
  .forecast-baseline { stroke: var(--ink-faint); stroke-width: 2; stroke-dasharray: 5 7; }
  .forecast-points circle { fill: var(--surface); stroke: var(--coral); stroke-width: 2; opacity: 0; animation: forecast-band-in .4s 1.45s ease forwards; }
  @keyframes demo-artifact-in { to { opacity: 1; transform: none; } }
  @keyframes forecast-line-in { to { stroke-dashoffset: 0; } }
  @keyframes forecast-band-in { to { opacity: 1; } }
  .demo-chart-legend { display: flex; flex-wrap: wrap; gap: .45rem .8rem; margin-top: .25rem; color: var(--ink-faint); font-family: var(--font-mono); font-size: .48rem; }
  .demo-chart-legend span { display: inline-flex; align-items: center; gap: .3rem; }
  .demo-chart-legend i { width: .8rem; height: 2px; background: var(--brand); }
  .demo-chart-legend [data-legend="forecast"] i { background: var(--coral); }
  .demo-chart-legend [data-legend="band"] i { height: .45rem; background: color-mix(in srgb, var(--coral) 35%, transparent); }
  .demo-chart-legend [data-legend="baseline"] i { background: var(--ink-faint); }
  .demo-forecast-metrics { display: grid; grid-template-columns: repeat(3, 1fr); gap: .5rem; margin-top: .8rem; }
  .demo-forecast-metrics div { padding-top: .55rem; border-top: 1px solid var(--line); }
  .demo-forecast-metrics dt { color: var(--ink-faint); font-size: .5rem; }
  .demo-forecast-metrics dd { margin: .15rem 0 0; font-size: .63rem; font-weight: 730; }

  @media (hover: hover) and (pointer: fine) {
    .demo-stage:hover { transform: perspective(800px) translateX(.25rem) rotateY(-1.5deg) translateZ(3px); box-shadow: var(--shadow-soft); }
    .demo-chunk:hover { transform: translateX(calc(var(--chunk-index) * .45rem)) rotateY(-2deg) translateZ(6px); }
  }

  .capability-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border-top: 1px solid var(--line-strong); border-left: 1px solid var(--line); }
  .service-card { min-width: 0; padding: 1.5rem; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); background: color-mix(in srgb, var(--surface) 72%, transparent); }
  .service-card h3 { font-size: 1.25rem; }
  .service-card p { margin-top: .7rem; color: var(--ink-soft); font-size: .92rem; }
  .service-icon { display: grid; place-items: center; width: 2.5rem; aspect-ratio: 1; margin-bottom: 2.5rem; border-radius: .6rem; background: var(--brand-soft); color: var(--brand); font-family: var(--font-mono); font-size: .7rem; }
  .service-list { display: grid; gap: .42rem; margin-top: 1.2rem; padding: 0; list-style: none; color: var(--ink-faint); font-family: var(--font-mono); font-size: .64rem; }
  .service-list li { display: flex; gap: .45rem; align-items: baseline; }
  .service-list li::before { content: "+"; color: var(--brand); }

  .about-panel { display: grid; grid-template-columns: minmax(17rem, .5fr) minmax(0, 1fr); gap: clamp(2.5rem, 6vw, 7rem); align-items: center; padding: clamp(1.25rem, 4vw, 4rem); border: 1px solid var(--line); border-radius: var(--radius-lg); background: var(--surface); }
  .portrait-wrap { position: relative; width: min(100%, 25rem); margin-inline: auto; aspect-ratio: 4 / 5; border-radius: 1.5rem; background: var(--surface-soft); overflow: hidden; box-shadow: var(--shadow-soft); }
  .portrait-wrap::after { content: ""; position: absolute; inset: 0; border: 1px solid var(--line-strong); border-radius: inherit; }
  .portrait { width: 100%; height: 100%; object-fit: cover; object-position: center 42%; }
  .about-copy > p { max-width: 50rem; margin-top: 1.3rem; color: var(--ink-soft); font-size: clamp(1.05rem, 2vw, 1.3rem); }
  .about-facts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; margin-top: 2rem; }
  .about-fact { padding-top: .8rem; border-top: 1px solid var(--line); }
  .about-fact strong { display: block; font-size: .85rem; }
  .about-fact span { display: block; margin-top: .2rem; color: var(--ink-faint); font-size: .75rem; }

  .article-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
  .article-card { min-height: 22rem; display: flex; flex-direction: column; padding: 1.5rem; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); transition: transform .25s var(--ease), border-color .2s ease; }
  .article-card:hover { transform: translateY(-4px); border-color: var(--line-strong); }
  .article-card-meta { display: flex; justify-content: space-between; gap: 1rem; color: var(--ink-faint); font-family: var(--font-mono); font-size: .62rem; text-transform: uppercase; letter-spacing: .06em; }
  .article-card h3 { margin-top: 4rem; font-size: 1.6rem; }
  .article-card p { margin-top: .8rem; color: var(--ink-soft); font-size: .9rem; }
  .article-card .text-link { margin-top: auto; padding-top: 2rem; }

  .text-link { display: inline-flex; align-items: center; gap: .5rem; color: var(--brand); font-size: .84rem; font-weight: 700; }
  .text-link:hover { color: var(--brand-ink); }

  .cta-panel { position: relative; min-height: 30rem; display: grid; place-items: center; overflow: hidden; padding: 3rem; border-radius: var(--radius-lg); background: #0c1730; color: #f7f9ff; text-align: center; }
  .cta-panel::before { content: ""; position: absolute; width: 35rem; aspect-ratio: 1; border: 1px solid rgba(255,255,255,.18); border-radius: 50%; box-shadow: 0 0 0 5rem rgba(80,126,255,.08), 0 0 0 10rem rgba(80,126,255,.05); animation: orbit 16s linear infinite; }
  @keyframes orbit { to { transform: rotate(360deg); } }
  .cta-content { position: relative; z-index: 1; max-width: 54rem; }
  .cta-content p { max-width: 37rem; margin: 1.3rem auto 2rem; color: rgba(247,249,255,.68); font-size: 1.08rem; }

  .page-hero { padding: 12rem 0 5rem; border-bottom: 1px solid var(--line); }
  .page-hero-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(18rem, .4fr); gap: 4rem; align-items: end; }
  .page-hero h1 { max-width: 11ch; }
  .page-hero p { color: var(--ink-soft); font-size: 1.1rem; }

  .project-detail-hero { padding: 11rem 0 5rem; }
  .back-link { display: inline-flex; align-items: center; gap: .5rem; margin-bottom: 3rem; color: var(--ink-soft); font-size: .83rem; font-weight: 650; }
  .project-detail-grid { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(17rem, .4fr); gap: 4rem; align-items: end; }
  .project-detail-grid h1 { max-width: 11ch; font-size: clamp(3.2rem, 7vw, 6.8rem); }
  .project-summary { max-width: 42rem; color: var(--ink-soft); font-size: 1.16rem; }
  .detail-meta { display: grid; gap: 1rem; }
  .meta-row { display: flex; justify-content: space-between; gap: 2rem; padding-bottom: .75rem; border-bottom: 1px solid var(--line); font-size: .78rem; }
  .meta-row span:first-child { color: var(--ink-faint); }
  .case-disclosure { max-width: 68rem; margin-top: 2.5rem; padding: 1rem 1.15rem; border: 1px solid var(--line); border-left: 3px solid var(--brand); border-radius: 0 var(--radius-sm) var(--radius-sm) 0; background: color-mix(in srgb, var(--brand-soft) 48%, var(--surface)); color: var(--ink-soft); font-size: .83rem; line-height: 1.65; }

  .architecture { padding: clamp(1.5rem, 4vw, 3rem); border: 1px solid var(--line); border-radius: var(--radius-lg); background: var(--surface); }
  .architecture-flow { display: grid; grid-template-columns: repeat(6, 1fr); gap: .65rem; margin-top: 2rem; }
  .architecture-node { position: relative; display: grid; place-items: center; min-height: 7rem; padding: .8rem; border: 1px solid var(--line); border-radius: .75rem; background: var(--surface-soft); text-align: center; font-size: .72rem; font-weight: 650; }
  .architecture-node:not(:last-child)::after { content: "→"; position: absolute; right: -.58rem; z-index: 2; color: var(--brand); }

  .detail-copy { display: grid; grid-template-columns: minmax(15rem, .38fr) minmax(0, 1fr); gap: clamp(2rem, 6vw, 7rem); }
  .detail-copy p { color: var(--ink-soft); font-size: 1.05rem; }
  .principle-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem; margin-top: 2rem; }
  .principle { padding: 1.2rem; border: 1px solid var(--line); border-radius: .8rem; background: var(--surface); }
  .principle h3 { font-size: 1rem; letter-spacing: -.02em; }
  .principle p { margin-top: .55rem; font-size: .87rem; }
  .issue-callout { margin-top: 2rem; padding: 1.25rem; border-left: 3px solid var(--amber); background: color-mix(in srgb, var(--amber) 10%, var(--surface)); }
  .issue-callout strong { display: block; margin-bottom: .35rem; font-size: .78rem; text-transform: uppercase; letter-spacing: .08em; }

  .section-head--compact { margin-bottom: 2.5rem; }
  .delivery-section { overflow: hidden; }
  .delivery-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border-top: 1px solid var(--line-strong); border-left: 1px solid var(--line); }
  .delivery-stage { min-width: 0; min-height: 17rem; padding: 1.5rem; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--surface); }
  .delivery-stage > span { display: block; margin-bottom: 4rem; color: var(--brand); font-family: var(--font-mono); font-size: .72rem; }
  .delivery-stage h3 { font-size: 1.08rem; }
  .delivery-stage p { margin-top: .7rem; color: var(--ink-soft); font-size: .86rem; }
  .scenario-block { margin-top: clamp(3rem, 6vw, 6rem); }
  .scenario-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; margin-top: 1.25rem; }
  .scenario-card { min-width: 0; padding: 1.35rem; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface-soft); }
  .scenario-card h3 { font-size: 1rem; }
  .scenario-card p { margin-top: .65rem; color: var(--ink-soft); font-size: .86rem; }
  .engineering-depth { background: color-mix(in srgb, var(--surface-soft) 72%, transparent); }
  .engineering-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; }
  .engineering-card { min-width: 0; min-height: 15rem; padding: 1.4rem; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); box-shadow: var(--shadow-soft); }
  .engineering-card::before { content: ""; display: block; width: 2.5rem; height: 2px; margin-bottom: 3.5rem; background: var(--brand); }
  .engineering-card h3 { font-size: 1.05rem; }
  .engineering-card p { margin-top: .7rem; color: var(--ink-soft); font-size: .88rem; }
  .evidence-panel { display: grid; grid-template-columns: minmax(16rem, .8fr) minmax(14rem, .65fr) minmax(18rem, .8fr); gap: clamp(2rem, 5vw, 5rem); align-items: start; padding: clamp(1.5rem, 4vw, 3.5rem); border: 1px solid var(--line); border-radius: var(--radius-lg); background: var(--surface); }
  .evidence-panel > div > p:last-child { margin-top: 1rem; max-width: 38rem; }
  .measure-list { display: grid; gap: .8rem; padding: 0; list-style: none; }
  .measure-list li { position: relative; padding: 0 0 .8rem 1.35rem; border-bottom: 1px solid var(--line); color: var(--ink-soft); font-size: .82rem; }
  .measure-list li::before { content: "✓"; position: absolute; left: 0; color: var(--green); }
  .tradeoff-note { padding: 1.25rem; border-left: 3px solid var(--violet); background: color-mix(in srgb, var(--violet) 9%, var(--surface)); }
  .tradeoff-note span { display: block; margin-bottom: .55rem; color: var(--ink-faint); font-family: var(--font-mono); font-size: .62rem; letter-spacing: .08em; text-transform: uppercase; }
  .tradeoff-note p { color: var(--ink-soft); font-size: .9rem; }

  .implementation-record { overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); box-shadow: var(--shadow-soft); }
  .implementation-record__head { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: .85rem 1rem; border-bottom: 1px solid var(--line); background: var(--surface-soft); color: var(--ink-faint); font-family: var(--font-mono); font-size: .61rem; letter-spacing: .07em; text-transform: uppercase; }
  .implementation-record__head strong { color: var(--brand); font-weight: 650; text-align: right; }
  .implementation-record dl { margin: 0; }
  .implementation-record dl > div { display: grid; grid-template-columns: minmax(8rem, .34fr) minmax(0, 1fr); gap: 1.25rem; padding: 1rem; border-bottom: 1px solid var(--line); }
  .implementation-record dl > div:last-child { border-bottom: 0; }
  .implementation-record dt { color: var(--ink-faint); font-family: var(--font-mono); font-size: .65rem; letter-spacing: .03em; text-transform: uppercase; }
  .implementation-record dd { min-width: 0; margin: 0; color: var(--ink-soft); font-size: .84rem; line-height: 1.65; overflow-wrap: anywhere; }

  .article-layout { display: grid; grid-template-columns: minmax(12rem, .28fr) minmax(0, .72fr); gap: clamp(2rem, 7vw, 8rem); align-items: start; }
  .article-aside { position: sticky; top: 7rem; }
  .article-aside p { color: var(--ink-soft); font-size: .85rem; }
  .article-body { max-width: 48rem; }
  .article-body section + section { margin-top: 4rem; }
  .article-body h2 { font-size: clamp(1.7rem, 3vw, 2.55rem); }
  .article-body p { margin-top: 1rem; color: var(--ink-soft); font-size: 1.05rem; line-height: 1.82; }
  .article-body .lead { margin-bottom: 4rem; color: var(--ink); font-size: 1.3rem; line-height: 1.55; }

  .privacy-copy { max-width: 52rem; }
  .privacy-copy h2 { margin-top: 3.5rem; font-size: 1.8rem; }
  .privacy-copy p, .privacy-copy li { color: var(--ink-soft); }
  .privacy-copy p { margin-top: 1rem; }
  .privacy-copy ul { margin: 1rem 0 0 1.2rem; }

  .contact-hero { padding: 12rem 0 5rem; border-bottom: 1px solid var(--line); }
  .contact-hero-grid { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(20rem, .55fr); gap: clamp(3rem, 8vw, 8rem); align-items: end; }
  .contact-hero h1 { max-width: 10ch; }
  .contact-intro > p { color: var(--ink-soft); font-size: 1.12rem; }
  .contact-principles { display: grid; gap: .6rem; margin-top: 1.75rem; color: var(--ink-faint); font-family: var(--font-mono); font-size: .66rem; letter-spacing: .04em; text-transform: uppercase; }
  .contact-shell { display: grid; grid-template-columns: minmax(18rem, .38fr) minmax(0, 1fr); gap: clamp(2rem, 6vw, 6rem); align-items: start; }
  .contact-aside { position: sticky; top: 7rem; }
  .contact-aside h2 { max-width: 10ch; font-size: clamp(2rem, 4vw, 3.7rem); }
  .contact-aside > p:not(.eyebrow) { margin-top: 1.2rem; color: var(--ink-soft); }
  .contact-email-card { display: grid; gap: .35rem; margin-top: 2rem; padding: 1.2rem; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
  .contact-email-card > span { color: var(--ink-faint); font-family: var(--font-mono); font-size: .62rem; letter-spacing: .06em; text-transform: uppercase; }
  .contact-email-card > a { width: fit-content; color: var(--brand); font-size: 1.05rem; font-weight: 680; overflow-wrap: anywhere; }
  .copy-email { width: fit-content; margin-top: .45rem; padding: 0; border: 0; background: transparent; color: var(--ink-soft); font-size: .72rem; text-decoration: underline; text-underline-offset: .25rem; cursor: pointer; }
  .contact-expectations { display: grid; gap: 1rem; margin-top: 2rem; }
  .contact-expectations > div { padding-top: .8rem; border-top: 1px solid var(--line); }
  .contact-expectations dt { font-size: .78rem; font-weight: 700; }
  .contact-expectations dd { margin-top: .3rem; color: var(--ink-soft); font-size: .78rem; }
  .contact-form-panel { padding: clamp(1.25rem, 4vw, 3rem); border: 1px solid var(--line); border-radius: var(--radius-lg); background: var(--surface); box-shadow: var(--shadow-soft); }
  .contact-form-head { display: flex; align-items: start; justify-content: space-between; gap: 2rem; padding-bottom: 2rem; border-bottom: 1px solid var(--line); }
  .contact-form-head h2 { max-width: 11ch; font-size: clamp(2rem, 4vw, 3.5rem); }
  .contact-form-head > span { flex: 0 0 auto; padding: .45rem .65rem; border-radius: 999px; background: var(--brand-soft); color: var(--brand-ink); font-family: var(--font-mono); font-size: .58rem; }
  .contact-form { display: grid; gap: 1.35rem; margin-top: 2rem; }
  .field-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }
  .field { min-width: 0; display: grid; gap: .55rem; color: var(--ink-soft); font-size: .76rem; font-weight: 650; }
  .field b { color: var(--brand); }
  .field input, .field select, .field textarea { width: 100%; min-width: 0; border: 1px solid var(--line); border-radius: .72rem; background: var(--surface-soft); color: var(--ink); transition: border-color .2s ease, box-shadow .2s ease, background-color .2s ease; }
  .field input, .field select { min-height: 3.25rem; padding: 0 .9rem; }
  .field textarea { min-height: 11rem; padding: .85rem .9rem; resize: vertical; line-height: 1.6; }
  .field input::placeholder, .field textarea::placeholder { color: var(--ink-faint); opacity: .8; }
  .field input:focus, .field select:focus, .field textarea:focus { outline: 0; border-color: var(--brand); background: var(--surface); box-shadow: 0 0 0 3px color-mix(in srgb, var(--brand) 16%, transparent); }
  .field small { justify-self: end; color: var(--ink-faint); font-family: var(--font-mono); font-size: .58rem; font-weight: 500; }
  .contact-consent { display: flex; gap: .7rem; align-items: start; color: var(--ink-soft); font-size: .74rem; }
  .contact-consent input { flex: 0 0 auto; width: 1rem; height: 1rem; margin-top: .17rem; accent-color: var(--brand); }
  .contact-submit-row { display: flex; align-items: center; gap: 1rem 1.5rem; padding-top: .5rem; }
  .contact-form-status { max-width: 28rem; color: var(--ink-faint); font-size: .7rem; }

  .site-footer { padding-block: 2rem; border-top: 1px solid var(--line); }
  .footer-grid { display: grid; grid-template-columns: 1fr auto; gap: 2rem; align-items: end; }
  .footer-brand { font-size: 1.1rem; font-weight: 680; }
  .footer-copy { margin-top: .5rem; color: var(--ink-faint); font-size: .75rem; }
  .footer-links { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 1rem; color: var(--ink-soft); font-size: .75rem; }

  [data-reveal] { opacity: 0; transform: translateY(22px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
  [data-reveal].is-visible { opacity: 1; transform: none; }
}

@layer utilities {
  .muted { color: var(--ink-soft); }
  .mono { font-family: var(--font-mono); }
  .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; }
  .accent { color: var(--brand); }
}

@media (max-width: 980px) {
  :root { --container: min(100% - 2rem, 760px); }
  .section-head, .page-hero-grid, .project-detail-grid, .detail-copy, .article-layout, .contact-hero-grid, .contact-shell { grid-template-columns: 1fr; gap: 2rem; }
  .hero { min-height: auto; padding-top: 8rem; }
  .hero-grid { grid-template-columns: 1fr; }
  .hero-copy { padding-block: 2rem; }
  .hero-visual { min-height: 30rem; }
  .project-grid { grid-template-columns: 1fr; }
  .project-card, .project-grid .project-card:last-child:nth-child(odd) { grid-column: auto; min-height: 35rem; }
  .method-grid { grid-template-columns: repeat(2, 1fr); }
  .method-step:nth-child(2) { border-right: 0; }
  .method-step:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .demo-workspace { grid-template-columns: 1fr 1fr; }
  .demo-input-panel { grid-column: 1 / -1; border-bottom: 1px solid var(--line); }
  .demo-input-panel h3 { margin-top: 2rem; }
  .demo-pipeline-panel { border-left: 0; }
  .article-grid { grid-template-columns: repeat(2, 1fr); }
  .capability-grid, .delivery-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .engineering-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .evidence-panel { grid-template-columns: 1fr 1fr; }
  .tradeoff-note { grid-column: 1 / -1; }
  .architecture-flow { grid-template-columns: repeat(3, 1fr); }
  .architecture-node:nth-child(3)::after { display: none; }
  .article-aside { position: static; }
  .contact-aside { position: static; }
}

@media (max-width: 720px) {
  :root { --container: min(100% - 1.25rem, 42rem); }
  h1 { font-size: clamp(3rem, 15vw, 5.2rem); }
  .nav-cta { display: none; }
  .menu-button { display: grid; }
  .nav-links {
    position: fixed;
    inset: 4.75rem .625rem auto;
    display: grid;
    gap: 0;
    padding: .5rem;
    border: 1px solid var(--line);
    border-radius: 1rem;
    background: var(--surface);
    box-shadow: var(--shadow);
    transform: translateY(-.75rem);
    opacity: 0;
    visibility: hidden;
    transition: opacity .2s ease, transform .2s var(--ease), visibility .2s;
  }
  .nav-links.is-open { transform: none; opacity: 1; visibility: visible; }
  .nav-links a { display: block; padding: .85rem; }
  .nav-links a::after { display: none; }
  .hero h1 { max-width: 100%; font-size: clamp(2.8rem, 14vw, 4.2rem); }
  .hero-lede { font-size: 1rem; }
  .hero-visual { min-width: 0; min-height: 26rem; }
  .availability { font-size: .62rem; letter-spacing: .04em; }
  .signal-card--three { display: none; }
  .project-card, .project-grid .project-card:last-child:nth-child(odd) { grid-column: auto; min-height: 31rem; }
  .project-meta { align-items: flex-start; font-size: .58rem; letter-spacing: .04em; }
  .project-media, .project-glyph { height: 11rem; margin-block: 1.15rem 1.5rem; }
  .project-card h3 { max-width: none; font-size: 1.7rem; }
  .case-visual { height: 21rem; border-radius: var(--radius); }
  .grid-2, .grid-3, .article-grid, .about-facts, .principle-list, .capability-grid, .delivery-grid, .scenario-grid, .engineering-grid, .evidence-panel { grid-template-columns: 1fr; }
  .delivery-stage { min-height: auto; }
  .delivery-stage > span, .engineering-card::before { margin-bottom: 2rem; }
  .engineering-card { min-height: auto; }
  .tradeoff-note { grid-column: auto; }
  .method-grid { grid-template-columns: 1fr; }
  .method-step { min-height: auto; border-right: 0; border-bottom: 1px solid var(--line); }
  .method-step:last-child { border-bottom: 0; }
  .method-step h3 { margin-top: 2.5rem; }
  .demo-app-bar { align-items: flex-start; }
  .demo-app-bar > div { align-items: flex-start; flex-direction: column; gap: .3rem; }
  .demo-live-dot { position: absolute; }
  .demo-app-bar > div strong { padding-left: 1rem; }
  .demo-safety { max-width: 8rem; text-align: center; }
  .demo-tabs { gap: .2rem; padding: .4rem; }
  .demo-tabs button { padding: .7rem .35rem; font-size: .61rem; }
  .demo-workspace { grid-template-columns: 1fr; }
  .demo-input-panel { grid-column: auto; }
  .demo-pipeline-panel, .demo-output-panel { border-top: 1px solid var(--line); border-left: 0; }
  .demo-output-panel { min-height: 21rem; }
  .demo-controls { align-items: stretch; flex-direction: column; }
  .demo-controls > div { display: grid; grid-template-columns: .65fr 1.35fr; }
  .demo-controls .button { padding-inline: .75rem; font-size: .72rem; }
  .about-panel { grid-template-columns: 1fr; }
  .about-copy { text-align: left; }
  .architecture-flow { grid-template-columns: 1fr; }
  .architecture-node:not(:last-child)::after { right: 50%; bottom: -.75rem; transform: translateX(50%) rotate(90deg); }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-links { justify-content: flex-start; }
  .cta-panel { min-height: 27rem; padding: 1.5rem; }
  .implementation-record__head { align-items: flex-start; flex-direction: column; }
  .implementation-record__head strong { text-align: left; }
  .implementation-record dl > div { grid-template-columns: 1fr; gap: .45rem; }
  .contact-hero { padding-top: 9rem; }
  .contact-form-head, .contact-submit-row { align-items: flex-start; flex-direction: column; }
  .contact-form-head > span { white-space: normal; }
  .field-grid { grid-template-columns: 1fr; }
}

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

@media (forced-colors: active) {
  .button, .project-card, .article-card, .about-panel, .architecture, .implementation-record { border: 1px solid CanvasText; }
  .project-card::before, .cta-panel::before { display: none; }
}