* { box-sizing: border-box; }
  html { scroll-behavior: smooth; }
  body {
    margin: 0;
    background: var(--surface-page);
    color: var(--text-primary);
    font-family: var(--font-app);
    font-size: var(--text-web-body);
    line-height: var(--leading-normal);
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
  }
  a { color: inherit; text-decoration: none; }
  a:focus-visible, button:focus-visible {
    outline: 3px solid var(--focus-ring);
    outline-offset: 2px;
    border-radius: var(--radius-capsule);
  }
  section { scroll-margin-top: 96px; }

  [data-reveal] {
    opacity: 0; transform: translateY(22px);
    /* exit: polite (slower, no stagger) */
    transition: opacity var(--dur-slow) var(--ease-exit, ease-out), transform var(--dur-slow) var(--ease-exit, ease-out);
  }
  [data-reveal="left"] { transform: translateX(-44px); }
  [data-reveal="right"] { transform: translateX(44px); }
  [data-reveal].in {
    opacity: 1; transform: none;
    /* entrance: eager, staggered */
    transition: opacity var(--dur-reveal, 380ms) var(--ease-house, ease-out), transform var(--dur-reveal, 380ms) var(--ease-house, ease-out);
    transition-delay: var(--reveal-delay, 0ms);
  }
  [data-reveal].in-done { opacity: 1 !important; transform: none !important; transition: none !important; }
  .et-divider.in-done .line { transform: scaleX(1) !important; transition: none !important; }
  .et-divider.in-done svg { opacity: 1 !important; transform: none !important; transition: none !important; }
  @media (prefers-reduced-motion: reduce) {
    [data-reveal] { opacity: 1; transform: none; transition: none; }
  }

  /* ---------- nav ---------- */
  .nav {
    position: fixed; top: 0; left: 0; right: 0; z-index: 50;
    display: flex; align-items: center; gap: 32px;
    height: 72px; padding: 0 40px;
    background: var(--surface-page);
    border-bottom: 1px solid var(--line-soft);
  }
  .nav-brand { display: flex; align-items: center; gap: 10px; margin-right: auto; }
  .nav-brand svg { width: 34px; height: 34px; color: var(--text-primary); display: block; }
  .wordmark {
    font-family: var(--font-display);
    font-weight: var(--weight-medium);
    letter-spacing: var(--tracking-display);
    color: var(--text-primary);
  }
  .nav-brand .wordmark { font-size: 30px; }
  .nav-links { display: flex; align-items: center; gap: 28px; }
  .nav-links a:not(.btn) {
    font-size: var(--text-web-sm); color: var(--text-secondary);
    transition: color var(--dur-instant) var(--ease-house, ease-out);
  }
  .nav-links a:not(.btn):hover { color: var(--text-primary); }
  .nav-links a:not(.btn).active { color: var(--accent); }
  .btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 10px;
    border-radius: var(--radius-capsule); border: 1px solid transparent;
    font-family: var(--font-app); cursor: pointer;
    transition: background var(--dur-instant) var(--ease-house, ease-out), transform var(--dur-instant) var(--ease-press, ease-out);
  }
  .btn:active { transform: scale(0.98); }
  .btn-primary { background: var(--paper-0); color: var(--ink-900); }
  .btn-primary:hover { background: var(--paper-100); }
  .btn-secondary { background: transparent; color: var(--text-primary); border-color: var(--line-strong); }
  .btn-secondary:hover { background: var(--surface-card); }
  .btn-nav { padding: 8px 18px; font-size: var(--text-web-sm); font-weight: var(--weight-semibold); }
  .btn-lg { padding: 15px 30px; font-size: var(--text-web-body); font-weight: var(--weight-semibold); }

  /* ---------- hero (split, demo tilted) ---------- */
  .hero {
    position: relative; overflow: hidden;
    min-height: 100svh;
    display: flex; align-items: center;
    padding: 112px 0 64px;
  }
  .page-wave {
    position: fixed; inset: 0; z-index: 0; pointer-events: none;
    opacity: 1; transition: opacity var(--dur-slow) var(--ease-exit, ease-out);
    -webkit-mask-image: linear-gradient(to bottom, transparent 0%, black 10%, black 90%, transparent 100%);
    mask-image: linear-gradient(to bottom, transparent 0%, black 10%, black 90%, transparent 100%);
  }
  .page-wave canvas { position: absolute; inset: 0; width: 100%; height: 100%; }
  .hero, .features, .models, .agent, .name, .privacy, .download, .et-divider, .footer { position: relative; z-index: 1; }
  .hero-grid {
    position: relative; z-index: 1;
    width: 100%;
    max-width: var(--web-content-max); margin: 0 auto; padding: 0 48px;
    display: grid; grid-template-columns: minmax(420px, 46fr) 54fr;
    align-items: center; gap: 56px;
  }
  .hero-copy { display: flex; flex-direction: column; align-items: flex-start; text-align: left; }
  .hero-badge {
    display: inline-flex; align-items: center; gap: 10px;
    padding: 8px 18px; border-radius: var(--radius-capsule);
    border: 1px solid var(--line-soft); background: rgba(24, 21, 18, 0.6);
    font-family: var(--font-mono); font-size: var(--text-footnote);
    letter-spacing: var(--tracking-caps); text-transform: uppercase;
    color: var(--text-secondary);
  }
  .hero-badge .dot { width: 6px; height: 6px; border-radius: var(--radius-capsule); background: var(--success); }
  .hero h1 {
    margin: 32px 0 0;
    font-family: var(--font-display);
    font-weight: var(--weight-medium);
    font-size: clamp(52px, 5.6vw, 84px);
    line-height: 1.06;
    letter-spacing: var(--tracking-display);
    color: var(--text-primary);
    text-wrap: balance;
    max-width: 12ch;
  }
  .hero-sub {
    margin: 26px 0 0; max-width: 460px;
    font-size: var(--text-web-lg); line-height: var(--leading-relaxed);
    color: var(--text-secondary); text-wrap: pretty;
  }
  .hero-ctas { display: flex; gap: 14px; margin-top: 38px; flex-wrap: wrap; }
  .hero-hint {
    margin: 34px 0 0;
    font-family: var(--font-mono); font-size: var(--text-footnote);
    color: var(--text-tertiary);
  }

  .hero-stage { position: relative; min-height: 520px; display: flex; align-items: center; }
  .demo-tilt {
    width: min(680px, 100%);
    margin-right: -36px; margin-left: auto;
    transform: perspective(1500px) rotateY(-17deg) rotateX(7deg) rotateZ(1.6deg);
    transform-style: preserve-3d;
    will-change: transform;
  }

  /* ---------- demo ---------- */
  .demo-wrap { display: flex; flex-direction: column; align-items: center; gap: 22px; }
  .demo-window {
    position: relative; width: 100%; min-height: 380px;
    background: var(--hud-material);
    -webkit-backdrop-filter: var(--hud-blur);
    backdrop-filter: var(--hud-blur);
    border: 1px solid rgba(240, 235, 223, 0.14);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-4), inset 0 1px 0 rgba(255, 255, 255, 0.06);
    overflow: hidden;
  }
  .demo-titlebar {
    position: relative; display: flex; align-items: center; justify-content: center;
    height: 40px; background: rgba(42, 37, 30, 0.45);
    border-bottom: 1px solid rgba(240, 235, 223, 0.08);
  }
  .demo-lights { position: absolute; left: 14px; display: flex; gap: 8px; }
  .demo-light { width: 12px; height: 12px; border-radius: var(--radius-capsule); background: var(--night-500); }
  .demo-title { font-size: var(--text-body); color: var(--text-tertiary); }
  .demo-doc { padding: 36px 44px 96px; text-align: left; }
  .demo-doc-text {
    margin: 0; max-width: 56ch;
    font-size: 16px; line-height: var(--leading-relaxed);
    color: var(--text-primary);
  }
  .demo-inserted { color: var(--text-primary); }
  .demo-caret {
    display: inline-block; width: 2px; height: 1.05em;
    margin-left: 1px; vertical-align: text-bottom;
    background: var(--accent);
  }
  .demo-hud {
    position: absolute; bottom: 20px; left: 50%;
    transform: translateX(-50%) translateY(8px);
    opacity: 0;
    transition: opacity var(--dur-base) var(--ease-house, ease-out), transform var(--dur-base) var(--ease-house, ease-out);
  }
  .demo-hud.visible { opacity: 1; transform: translateX(-50%) translateY(0); }
  .demo-caption-row { display: flex; align-items: center; gap: 10px; align-self: flex-start; padding-left: 6px; }
  .demo-keycap {
    display: inline-flex; align-items: center; justify-content: center;
    min-width: 34px; height: 30px; padding: 0 10px;
    border-radius: var(--radius-sm); border: 1px solid var(--line-strong);
    border-bottom-width: 2.5px;
    background: var(--surface-card);
    font-family: var(--font-mono); font-size: var(--text-footnote);
    color: var(--text-secondary);
    transition: transform var(--dur-instant) var(--ease-press, ease-out), background var(--dur-instant) var(--ease-press, ease-out);
  }
  .demo-keycap.wide { min-width: 72px; }
  .demo-keycap.pressed {
    transform: translateY(1.5px); border-bottom-width: 1px;
    background: var(--surface-raised); color: var(--text-primary);
  }
  .demo-caption {
    margin-left: 8px;
    font-family: var(--font-mono); font-size: var(--text-footnote);
    color: var(--text-tertiary);
  }
  @media (prefers-reduced-motion: no-preference) {
    .demo-caret.active { animation: amanu-caret 1.1s step-end infinite; }
  }
  @keyframes amanu-caret { 0%, 100% { opacity: 1; } 50% { opacity: 0; } }

  /* ---------- shared section chrome ---------- */
  .section-label {
    font-family: var(--font-mono); font-size: var(--text-footnote);
    letter-spacing: var(--tracking-caps); text-transform: uppercase;
    color: var(--text-tertiary);
  }
  h2 {
    font-family: var(--font-display); font-weight: var(--weight-medium);
    line-height: var(--leading-snug); letter-spacing: var(--tracking-display);
    color: var(--text-primary); margin: 0;
  }

  /* ---------- features: spec mosaic ---------- */
  .features { padding: 130px 48px 110px; }
  .features-inner { max-width: var(--web-content-max); margin: 0 auto; }
  .features-head { display: flex; flex-direction: column; align-items: flex-end; text-align: right; margin-bottom: 48px; }
  .features-head h2 { font-size: clamp(26px, 2.6vw, 36px); max-width: 24ch; margin-top: 14px; }
  .features-grid {
    display: grid; grid-template-columns: repeat(12, 1fr);
    border-top: 1px solid var(--line-soft); border-left: 1px solid var(--line-soft);
  }
  .feature-cell {
    grid-column: span 6;
    display: flex; flex-direction: column; gap: 10px;
    padding: 26px 28px 22px; min-height: 210px;
    border-right: 1px solid var(--line-soft); border-bottom: 1px solid var(--line-soft);
    transition: background var(--dur-instant) var(--ease-house, ease-out);
  }
  .feature-cell:hover { background: var(--surface-window); }
  .feature-cell.c4 { grid-column: span 4; }
  .feature-cell.c5 { grid-column: span 5; }
  .feature-cell.c6 { grid-column: span 6; }
  .feature-cell.c7 { grid-column: span 7; }
  .feature-cell.c8 { grid-column: span 8; }
  .feature-num { font-family: var(--font-mono); font-size: var(--text-footnote); color: var(--accent); transition: color var(--dur-instant) var(--ease-house, ease-out); }
  .feature-cell:hover .feature-num { color: var(--accent-hover); }
  .feature-cell h3 {
    margin: 2px 0 0;
    font-family: var(--font-display); font-weight: var(--weight-medium);
    font-size: var(--text-web-lg); letter-spacing: var(--tracking-display);
    color: var(--text-primary);
  }
  .feature-cell p {
    margin: 0; font-size: var(--text-web-sm); line-height: var(--leading-relaxed);
    color: var(--text-secondary); text-wrap: pretty; max-width: 48ch;
  }
  .feature-spec {
    margin-top: auto; padding-top: 18px;
    font-family: var(--font-mono); font-size: var(--text-footnote);
    color: var(--text-tertiary);
  }
  .cell-keys { display: flex; gap: 8px; margin-top: 4px; }
  .clean-demo { display: flex; flex-direction: column; gap: 5px; margin-top: 4px; font-family: var(--font-mono); font-size: var(--text-body); }
  .clean-demo .raw { color: var(--text-tertiary); text-decoration: line-through; text-decoration-color: var(--accent); }
  .clean-demo .out { color: var(--text-primary); }
  .feature-hud { display: flex; justify-content: center; align-items: center; padding: 14px 0 6px; }
  .feature-hud > div { transform: scale(0.92); transform-origin: center; }

  /* ---------- models / MLX ---------- */
  .models { padding: 110px 48px 130px; }
  .models-inner {
    max-width: var(--web-content-max); margin: 0 auto;
    display: grid; grid-template-columns: 6fr 6fr; gap: 72px; align-items: start;
  }
  .models-copy h2 { font-size: clamp(26px, 2.6vw, 36px); max-width: 20ch; margin-top: 14px; }
  .models-lede {
    margin: 22px 0 0; max-width: 50ch;
    font-size: var(--text-web-body); line-height: var(--leading-relaxed);
    color: var(--text-secondary); text-wrap: pretty;
  }
  .model-steps { margin-top: 40px; }
  .model-step {
    display: grid; grid-template-columns: 52px 92px 1fr; gap: 0 18px;
    padding: 18px 4px; border-top: 1px solid var(--line-soft);
    align-items: baseline;
  }
  .model-step:last-child { border-bottom: 1px solid var(--line-soft); }
  .model-step .feature-num { font-size: var(--text-footnote); }
  .model-step h3 { margin: 0; font-size: var(--text-web-sm); font-weight: var(--weight-semibold); color: var(--text-primary); }
  .model-step p { margin: 0; font-size: 14px; line-height: var(--leading-relaxed); color: var(--text-secondary); text-wrap: pretty; }
  .models-card {
    background: var(--hud-material);
    -webkit-backdrop-filter: var(--hud-blur);
    backdrop-filter: var(--hud-blur);
    border: 1px solid rgba(240, 235, 223, 0.14);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-2), inset 0 1px 0 rgba(255, 255, 255, 0.06);
    overflow: hidden;
  }
  .models-card-head {
    display: flex; align-items: baseline; justify-content: space-between; gap: 16px;
    padding: 16px 20px; background: rgba(42, 37, 30, 0.45);
    border-bottom: 1px solid rgba(240, 235, 223, 0.08);
  }
  .models-card-head .t { font-size: var(--text-web-sm); font-weight: var(--weight-semibold); color: var(--text-primary); }
  .models-card-head .p { font-family: var(--font-mono); font-size: var(--text-caption); color: var(--text-tertiary); }
  .model-row {
    display: grid; grid-template-columns: 1fr auto; gap: 4px 16px;
    padding: 15px 20px; border-bottom: 1px solid rgba(240, 235, 223, 0.08);
    align-items: center;
  }
  .model-name { font-family: var(--font-mono); font-size: var(--text-body); color: var(--text-primary); }
  .model-kind { font-size: var(--text-footnote); color: var(--text-tertiary); grid-row: 2; }
  .model-state { display: flex; align-items: center; gap: 8px; grid-row: 1 / 3; justify-self: end; }
  .model-size { font-family: var(--font-mono); font-size: var(--text-footnote); color: var(--text-tertiary); }
  .model-chip {
    display: inline-flex; align-items: center; gap: 7px;
    padding: 5px 12px; border-radius: var(--radius-capsule);
    font-size: var(--text-footnote); color: var(--text-secondary);
    border: 1px solid var(--line-soft);
  }
  .model-chip .dot { width: 6px; height: 6px; border-radius: var(--radius-capsule); background: var(--success); }
  .model-chip.get { color: var(--text-link); border-color: var(--line-strong); }
  .model-progress { width: 110px; height: 3px; border-radius: var(--radius-capsule); background: var(--night-500); overflow: hidden; }
  .model-progress span { display: block; height: 100%; width: 64%; background: var(--accent); }
  .model-pct { font-family: var(--font-mono); font-size: var(--text-caption); color: var(--text-tertiary); }
  .models-card-foot {
    padding: 13px 20px;
    font-family: var(--font-mono); font-size: var(--text-caption);
    color: var(--text-tertiary);
  }

  /* ---------- et divider ---------- */
  .et-divider {
    display: flex; align-items: center; gap: 28px;
    max-width: var(--web-content-max); margin: 0 auto; padding: 0 48px;
  }
  .et-divider .line { flex: 1; height: 1px; background: var(--line-soft); }
  .et-divider svg { width: 26px; height: 26px; color: var(--accent); flex: none; }
  .et-divider[data-reveal] { opacity: 1; transform: none; }
  @media (prefers-reduced-motion: no-preference) {
    .et-divider .line { transform: scaleX(0); transition: transform 800ms var(--ease-house, ease-out); }
    .et-divider .line.l { transform-origin: 100% 50%; }
    .et-divider .line.r { transform-origin: 0% 50%; }
    .et-divider svg { opacity: 0; transform: scale(0.6) rotate(-10deg); transition: opacity 420ms var(--ease-house, ease-out) 280ms, transform 420ms var(--ease-house, ease-out) 280ms; }
    .et-divider.in .line { transform: scaleX(1); }
    .et-divider.in svg { opacity: 1; transform: none; }
  }

  /* ---------- privacy: asymmetric ---------- */
  .privacy { padding: 130px 48px; }
  .privacy-inner {
    max-width: var(--web-content-max); margin: 0 auto;
    display: grid; grid-template-columns: 7fr 5fr; gap: 64px; align-items: center;
  }
  .privacy h2 { font-size: clamp(40px, 4.6vw, 64px); max-width: 13ch; margin-top: 18px; }
  .privacy-side p { margin: 0; }
  .privacy-side p + p { margin-top: 16px; }
  .privacy-side p {
    font-size: var(--text-web-body); line-height: var(--leading-relaxed);
    color: var(--text-secondary); text-wrap: pretty;
  }
  .privacy-chips { display: flex; gap: 12px; margin-top: 30px; flex-wrap: wrap; }
  .privacy-chip {
    padding: 9px 18px; border-radius: var(--radius-capsule);
    border: 1px solid var(--line-soft);
    font-family: var(--font-mono); font-size: var(--text-footnote);
    color: var(--text-secondary);
  }
  .privacy-chip[data-reveal] { transform: translateY(12px) scale(0.92); }

  .ax-ledger { margin-top: 40px; }
  .ax-ledger .section-label { display: block; margin-bottom: 4px; }
  .ax-ledger .model-step { grid-template-columns: 32px 76px 1fr; padding: 14px 2px; }
  .ax-note {
    margin: 16px 0 0;
    font-family: var(--font-mono); font-size: var(--text-footnote);
    color: var(--text-tertiary);
  }

  /* ---------- download: split band ---------- */
  .download { padding: 60px 48px 150px; }
  .download-inner {
    max-width: var(--web-content-max); margin: 0 auto;
    border-top: 1px solid var(--line-soft);
    padding-top: 90px;
    display: grid; grid-template-columns: 5fr 7fr; gap: 64px; align-items: center;
  }
  .download-stmt { text-align: right; justify-self: end; display: flex; flex-direction: column; align-items: flex-end; }
  .download h2 { font-size: clamp(36px, 4vw, 56px); max-width: 14ch; margin-top: 18px; }
  .download-side { display: flex; flex-direction: column; align-items: flex-start; gap: 16px; }
  .download-req {
    margin: 12px 0 0;
    font-family: var(--font-mono); font-size: var(--text-footnote);
    color: var(--text-tertiary);
  }

  /* ---------- footer ---------- */
  .footer { border-top: 1px solid var(--line-soft); padding: 56px 48px 64px; }
  .footer-inner {
    max-width: var(--web-content-max); margin: 0 auto;
    display: flex; align-items: flex-start; justify-content: space-between; gap: 32px; flex-wrap: wrap;
  }
  .footer-brand { display: flex; align-items: center; gap: 9px; }
  .footer-brand svg { width: 18px; height: 18px; color: var(--text-secondary); display: block; }
  .footer-brand .wordmark { font-size: 18px; color: var(--text-secondary); }
  .footer-latin {
    margin: 14px 0 0;
    font-family: var(--font-display); font-style: italic;
    font-size: var(--text-web-sm); color: var(--text-tertiary);
  }
  .footer-links { display: flex; gap: 24px; }
  .footer-links a { font-size: var(--text-web-sm); color: var(--text-secondary); }
  .footer-links a:hover { color: var(--text-primary); }
  .footer-copy { margin: 14px 0 0; font-size: var(--text-footnote); color: var(--text-tertiary); }

  /* ---------- back to top ---------- */
  .to-top {
    position: fixed; right: 28px; bottom: 28px; z-index: 60;
    width: 46px; height: 46px; display: inline-flex; align-items: center; justify-content: center;
    border-radius: var(--radius-capsule); border: 1px solid var(--line-strong);
    background: var(--surface-card); color: var(--accent); cursor: pointer;
    box-shadow: var(--shadow-3);
    opacity: 0; transform: translateY(10px); pointer-events: none;
    transition: opacity var(--dur-base) var(--ease-house, ease-out), transform var(--dur-base) var(--ease-house, ease-out), background var(--dur-instant) var(--ease-house, ease-out);
  }
  .to-top.show { opacity: 1; transform: none; pointer-events: auto; }
  .to-top:hover { background: var(--surface-raised); }
  .to-top:active { transform: scale(0.96); }
  .to-top svg { width: 22px; height: 22px; display: block; }

  /* ---------- agent era ---------- */
  .agent { padding: 120px 48px; }
  .agent-inner { max-width: var(--web-content-max); margin: 0 auto; display: grid; grid-template-columns: 6fr 5fr; gap: 64px; align-items: center; }
  .agent-copy h2 { font-size: clamp(34px, 4vw, 54px); max-width: 14ch; margin-top: 14px; }
  .agent-copy p { margin: 22px 0 0; max-width: 48ch; font-size: var(--text-web-body); line-height: var(--leading-relaxed); color: var(--text-secondary); text-wrap: pretty; }
  .agent-prompt {
    background: var(--hud-material);
    -webkit-backdrop-filter: var(--hud-blur); backdrop-filter: var(--hud-blur);
    border: 1px solid rgba(240, 235, 223, 0.14); border-radius: var(--radius-lg);
    box-shadow: var(--shadow-2), inset 0 1px 0 rgba(255, 255, 255, 0.06);
    padding: 22px 24px;
  }
  .agent-prompt .lbl { font-family: var(--font-mono); font-size: var(--text-footnote); letter-spacing: var(--tracking-caps); text-transform: uppercase; color: var(--text-tertiary); }
  .agent-prompt p { margin: 14px 0 0; font-family: var(--font-mono); font-size: var(--text-body); line-height: var(--leading-relaxed); color: var(--text-primary); }
  .agent-prompt .cue { display: block; margin-top: 16px; font-family: var(--font-mono); font-size: var(--text-footnote); color: var(--text-tertiary); }
  .agent-prompt .cue .dot { display: inline-block; width: 6px; height: 6px; border-radius: var(--radius-capsule); background: var(--success); margin-right: 7px; }

  /* ---------- the name / etymology ---------- */
  .name { padding: 120px 48px; }
  .name-inner { max-width: var(--web-content-max); margin: 0 auto; }
  .name-head { display: flex; flex-direction: column; align-items: center; text-align: center; }
  .name-head h2 { font-size: clamp(34px, 4vw, 52px); max-width: 18ch; margin-top: 14px; }
  .name-pron {
    display: flex; flex-direction: column; align-items: center; gap: 12px;
    margin: 38px auto 56px; padding: 34px 44px;
    border: 1px solid var(--line-soft); border-radius: var(--radius-lg);
    background: var(--surface-window);
  }
  .name-pron-say {
    font-family: var(--font-display); font-weight: var(--weight-medium);
    font-size: clamp(36px, 4.6vw, 58px); letter-spacing: var(--tracking-display);
    line-height: 1; color: var(--text-primary);
  }
  .name-pron-say em { font-style: normal; color: var(--accent); }
  .name-pron-gloss {
    font-family: var(--font-display); font-style: italic;
    font-size: var(--text-web-body); color: var(--text-tertiary);
  }
  .name-grid { display: grid; grid-template-columns: 7fr 5fr; gap: 64px; align-items: start; }
  .name-copy p {
    margin: 0; font-size: var(--text-web-body); line-height: var(--leading-relaxed);
    color: var(--text-secondary); text-wrap: pretty;
  }
  .name-copy em { font-style: italic; color: var(--text-primary); }
  .name-mark {
    display: flex; gap: 20px; align-items: flex-start;
    margin-top: 28px; padding-top: 28px; border-top: 1px solid var(--line-soft);
  }
  .name-mark svg { width: 44px; height: 44px; color: var(--accent); flex: none; }
  .name-mark p {
    margin: 0; font-size: var(--text-web-sm); line-height: var(--leading-relaxed);
    color: var(--text-secondary); text-wrap: pretty;
  }
  .name-lineage .section-label { display: block; margin-bottom: 6px; }
  .name-row {
    display: grid; grid-template-columns: 124px 1fr; gap: 0 20px;
    padding: 15px 2px; border-top: 1px solid var(--line-soft); align-items: baseline;
  }
  .name-row:last-of-type { border-bottom: 1px solid var(--line-soft); }
  .name-row .who {
    font-family: var(--font-display); font-weight: var(--weight-medium);
    font-size: var(--text-web-sm); color: var(--text-primary);
  }
  .name-row .what {
    font-size: 14px; line-height: var(--leading-relaxed);
    color: var(--text-secondary); text-wrap: pretty;
  }
  .name-close {
    margin: 22px 0 0;
    font-family: var(--font-mono); font-size: var(--text-footnote);
    line-height: var(--leading-relaxed); color: var(--text-tertiary);
  }

  /* ---------- responsive ---------- */
  @media (max-width: 1100px) {
    .hero-grid { grid-template-columns: 1fr; gap: 40px; }
    .hero-stage { min-height: 0; }
    .demo-tilt { margin: 0 auto; }
    .feature-cell.c4, .feature-cell.c5, .feature-cell.c7, .feature-cell.c8 { grid-column: span 6; }
  }
  @media (max-width: 920px) {
    .demo-tilt { transform: none; }
    .privacy-inner, .download-inner, .models-inner, .name-grid, .agent-inner { grid-template-columns: 1fr; gap: 36px; }
    .feature-cell, .feature-cell.c4, .feature-cell.c5, .feature-cell.c6, .feature-cell.c7, .feature-cell.c8 { grid-column: span 12; min-height: 0; }
    .features-head { align-items: flex-start; text-align: left; }
    .download-stmt { text-align: left; justify-self: start; align-items: flex-start; }
  }
  @media (max-width: 720px) {
    .nav { padding: 0 20px; gap: 18px; }
    .nav-links { gap: 16px; }
    .nav-links a { display: none; }
    .hero { padding-top: 112px; }
    .hero-grid, .features, .models, .agent, .name, .privacy, .download, .footer, .et-divider { padding-left: 20px; padding-right: 20px; }
    .demo-doc { padding: 28px 24px 96px; }
    .to-top { right: 16px; bottom: 16px; }
  }