:root {
    --bg: #faf6ee;
    --bg-alt: #f4ede0;
    --surface: #fbf8f1;
    --surface-2: #f3ecde;
    --surface-elevated: #fdfaf3;
    --border: #e8dfca;
    --border-medium: #dccfaf;
    --border-strong: #c9b88f;
    --text-1: #2d2418;
    --text-2: #5c4f3a;
    --text-3: #8a7a5e;
    --text-4: #b3a384;
    --accent: #b65a14;
    --accent-hover: #8f4310;
    --accent-deep: #5e3210;
    --accent-faint: #f4dfb9;
    --accent-tint: #faecd1;
    --severity-high: #b03a26;
    --code-bg: #2d2418;
    --code-text: #f4ede0;
    --code-accent: #e8a878;
    --code-string: #c9b88f;
    --code-key: #f0c986;
    --serif: 'Source Serif 4', Georgia, 'Times New Roman', serif;
    --sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --mono: 'IBM Plex Mono', Menlo, monospace;
  }
  * { box-sizing: border-box; margin: 0; padding: 0; }
  html { scroll-behavior: smooth; }
  body {
    font-family: var(--sans);
    font-size: 16px;
    line-height: 1.55;
    color: var(--text-1);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
    font-feature-settings: 'tnum' 1;
  }
  a { color: var(--accent); text-decoration: none; }
  a:hover { color: var(--accent-hover); }

  .container {
    max-width: 1180px;
    margin: 0 auto;
    padding: 0 32px;
  }

  /* === NAV === */
  .nav {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(250, 246, 238, 0.92);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--border);
  }
  .nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 32px;
    max-width: 1180px;
    margin: 0 auto;
    position: relative;
  }
  .brand {
    font-family: var(--serif);
    font-size: 22px;
    font-weight: 600;
    letter-spacing: 0.06em;
    color: var(--accent-deep);
    display: inline-flex;
    align-items: center;
    text-indent: 0;
  }
  .brand::before,
  .brand::after {
    content: "";
    width: 0.16em;
    height: 0.92em;
    flex: none;
    border: 2px solid var(--accent);
  }
  .brand::before {
    border-right: none;
    margin-right: 0.18em;
  }
  .brand::after {
    border-left: none;
    margin-left: 0.18em;
  }
  .nav-links {
    display: flex;
    align-items: center;
    gap: 28px;
  }
  .nav-link {
    color: var(--text-2);
    font-size: 14px;
    font-weight: 500;
  }
  .nav-link:hover { color: var(--text-1); }
  .nav-cta {
    background: var(--accent);
    color: white;
    padding: 8px 16px;
    border-radius: 3px;
    font-size: 14px;
    font-weight: 500;
  }
  .nav-cta:hover { background: var(--accent-hover); color: white; }
  .nav-toggle { display: none; }
  .nav-burger { display: none; }

  /* === ANNOUNCEMENT BAR === */
  .announce {
    background: var(--accent-deep);
    color: var(--accent-faint);
    font-size: 13px;
    line-height: 1.4;
    text-align: center;
    padding: 9px 24px;
  }
  .announce strong { color: #fff; font-weight: 600; }
  .announce .announce-soft { color: #c9a87a; }

  /* === HERO === */
  .hero {
    padding: 96px 0 80px;
    position: relative;
  }
  .hero-eyebrow {
    display: flex;
    width: fit-content;
    align-items: center;
    gap: 8px;
    padding: 5px 12px;
    background: var(--accent-tint);
    border: 1px solid var(--border-medium);
    border-radius: 3px;
    font-size: 11px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--accent-hover);
    font-weight: 500;
    margin-bottom: 14px;
  }
  .hero-eyebrow .dot {
    width: 6px;
    height: 6px;
    background: var(--accent);
    border-radius: 50%;
    display: inline-block;
  }
  .hero-superhead {
    font-family: var(--serif);
    font-style: italic;
    font-size: 30px;
    line-height: 1.2;
    color: var(--accent-hover);
    margin-bottom: 18px;
    letter-spacing: -0.008em;
  }
  h1.hero-title {
    font-family: var(--serif);
    font-size: 64px;
    font-weight: 400;
    line-height: 1.05;
    letter-spacing: -0.02em;
    color: var(--text-1);
    margin-bottom: 24px;
    max-width: 900px;
  }
  h1.hero-title em {
    font-style: italic;
    color: var(--accent);
    font-weight: 400;
  }
  .hero-sub {
    font-family: var(--serif);
    font-size: 22px;
    color: var(--text-2);
    line-height: 1.5;
    max-width: 760px;
    margin-bottom: 32px;
  }
  .hero-points {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 36px;
  }
  .hero-point {
    display: flex;
    gap: 14px;
    align-items: baseline;
    font-size: 15px;
    color: var(--text-2);
    max-width: 760px;
  }
  .hero-point .arrow {
    color: var(--accent);
    font-family: var(--serif);
    font-size: 18px;
    font-weight: 500;
    flex-shrink: 0;
  }
  .hero-point strong { color: var(--text-1); font-weight: 600; }
  .hero-actions {
    display: flex;
    gap: 12px;
    margin-bottom: 40px;
  }
  .btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 22px;
    border-radius: 3px;
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    border: 1px solid var(--border-strong);
    background: var(--surface);
    color: var(--text-1);
    font-family: var(--sans);
  }
  .btn:hover { background: var(--surface-2); }
  .btn-primary {
    background: var(--accent);
    color: white;
    border-color: var(--accent);
  }
  .btn-primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); color: white; }
  .btn svg { width: 14px; height: 14px; }
  .aligned-with {
    display: flex;
    align-items: center;
    gap: 14px;
    font-size: 13px;
    color: var(--text-3);
    font-family: var(--serif);
    font-style: italic;
  }
  .aligned-with .label { color: var(--text-3); }
  .aligned-with .standards {
    display: flex;
    gap: 10px;
    font-family: var(--sans);
    font-style: normal;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-2);
    font-weight: 500;
  }
  .aligned-with .standards span:not(:last-child)::after {
    content: '·';
    margin-left: 10px;
    color: var(--text-4);
  }

  /* === SECTIONS === */
  .section {
    padding: 88px 0;
    border-top: 1px solid var(--border);
  }
  .section-alt { background: var(--surface); }

  /* Background rhythm: three warm tones stepped for scroll contrast.
     t1 paper (lightest base), t2 cream (airy, for heros), t3 sand (deepest).
     Apply one tone class per section; never repeat a tone on adjacent
     sections. .section-alt kept as an alias of t3 for legacy markup. */
  .section-t1,
  .page-cta.section-t1 { background: var(--bg); }
  .section-t2,
  .page-hero.section-t2,
  .page-cta.section-t2 { background: var(--surface-elevated); }
  .section-t3,
  .section-alt,
  .page-cta.section-t3 { background: var(--surface-2); }

  /* Header zone reads distinct: hairline under the section intro. */
  .section-sub { border-bottom: 1px solid var(--border); padding-bottom: 28px; }

  /* Section headers are centered (Parsias-style); the hero uses its own
     left-aligned hero-title/hero-sub classes and is unaffected. */
  .section-label {
    font-family: var(--serif);
    font-style: italic;
    font-size: 14px;
    color: var(--accent);
    margin-bottom: 12px;
    text-align: center;
  }
  h2.section-title {
    font-family: var(--serif);
    font-size: 42px;
    font-weight: 400;
    line-height: 1.15;
    letter-spacing: -0.015em;
    color: var(--text-1);
    margin-bottom: 24px;
    max-width: 740px;
    margin-left: auto;
    margin-right: auto;
    text-align: center;
  }
  h2.section-title em {
    font-style: italic;
    color: var(--accent);
  }
  .section-sub {
    font-family: var(--serif);
    font-size: 19px;
    color: var(--text-2);
    line-height: 1.55;
    max-width: 720px;
    margin-bottom: 48px;
    margin-left: auto;
    margin-right: auto;
    text-align: center;
  }

  /* === PROBLEM SECTION (two-up) === */
  .problem-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
    margin-top: 8px;
  }
  .problem-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 36px;
  }
  .problem-tag {
    font-family: var(--serif);
    font-style: italic;
    font-size: 14px;
    color: var(--accent);
    margin-bottom: 14px;
  }
  .problem-card h3 {
    font-family: var(--serif);
    font-size: 28px;
    font-weight: 400;
    color: var(--text-1);
    line-height: 1.2;
    margin-bottom: 18px;
    letter-spacing: -0.01em;
  }
  .problem-card p {
    color: var(--text-2);
    font-size: 16px;
    line-height: 1.6;
  }
  .problem-card .stat {
    margin-top: 22px;
    padding-top: 22px;
    border-top: 1px solid var(--border);
    font-family: var(--serif);
    font-size: 18px;
    color: var(--text-1);
  }
  .problem-card .stat strong {
    font-size: 26px;
    color: var(--accent);
    font-weight: 500;
    letter-spacing: -0.01em;
  }

  /* === REGULATORY TIMELINE === */
  .timeline-band {
    background: var(--accent-tint);
    border: 1px solid var(--border-medium);
    border-radius: 4px;
    padding: 40px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
  }
  .timeline-band h3 {
    font-family: var(--serif);
    font-size: 28px;
    font-weight: 400;
    color: var(--accent-deep);
    line-height: 1.25;
    margin-bottom: 12px;
    letter-spacing: -0.01em;
  }
  .timeline-band h3 em { font-style: italic; }
  .timeline-band p {
    color: var(--text-2);
    font-size: 15px;
    line-height: 1.6;
  }
  .timeline-dates {
    display: flex;
    flex-direction: column;
    gap: 14px;
  }
  .timeline-row {
    display: grid;
    grid-template-columns: 140px 1fr;
    gap: 16px;
    align-items: baseline;
    padding-bottom: 14px;
    border-bottom: 1px solid var(--border-medium);
  }
  .timeline-row:last-child { border-bottom: none; padding-bottom: 0; }
  .timeline-date {
    font-family: var(--serif);
    font-size: 18px;
    font-weight: 500;
    color: var(--accent-deep);
    letter-spacing: -0.005em;
  }
  .timeline-date em { font-style: italic; color: var(--accent); }
  .timeline-desc {
    font-size: 13px;
    color: var(--text-2);
    line-height: 1.5;
  }
  .timeline-desc strong { color: var(--text-1); font-weight: 600; }
  .tl-tag {
    display: inline-block;
    font-family: var(--sans);
    font-size: 10px;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    padding: 2px 7px;
    border-radius: 2px;
    margin-right: 6px;
    vertical-align: 1px;
  }
  .tl-tag-now { background: var(--severity-high); color: #fff; }
  .tl-tag-prop { background: var(--surface-2); color: var(--text-3); border: 1px solid var(--border-medium); }

  /* === API PREVIEW === */
  .api-preview {
    margin-top: 12px;
    background: var(--code-bg);
    border-radius: 6px;
    overflow: hidden;
    box-shadow: 0 1px 0 var(--border), 0 4px 24px rgba(45, 36, 24, 0.08);
  }
  .api-tab-bar {
    display: flex;
    align-items: center;
    padding: 10px 16px;
    background: rgba(255, 255, 255, 0.04);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    gap: 14px;
  }
  .api-tab {
    font-family: var(--mono);
    font-size: 11px;
    color: var(--code-text);
    opacity: 0.5;
    letter-spacing: 0.05em;
    background: none;
    border: none;
    padding: 0;
    cursor: pointer;
    transition: opacity 0.15s ease, color 0.15s ease;
  }
  .api-tab:hover { opacity: 0.8; }
  .api-tab.active { opacity: 1; color: var(--code-accent); }
  .api-tab-dots {
    margin-left: auto;
    font-family: var(--mono);
    font-size: 10px;
    color: var(--code-text);
    opacity: 0.4;
    letter-spacing: 0.1em;
    text-transform: uppercase;
  }
  .api-code {
    font-family: var(--mono);
    font-size: 13px;
    line-height: 1.7;
    color: var(--code-text);
    padding: 24px 28px;
    /* Wrap long lines instead of showing a horizontal scrollbar. */
    white-space: pre-wrap;
    overflow-wrap: anywhere;
    overflow-x: hidden;
  }
  .api-code .comment { color: var(--code-accent); opacity: 0.85; font-style: italic; }
  .api-code .method { color: #ffb86c; font-weight: 500; }
  .api-code .key { color: var(--code-key); }
  .api-code .string { color: #c9d28d; }
  .api-code .number { color: #f0c986; }
  .api-code .punct { color: var(--code-text); opacity: 0.6; }

  /* === HERO SPLIT === */
  .hero-split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
  }
  .hero-frame {
    box-shadow: 0 1px 0 var(--border), 0 8px 32px rgba(45, 36, 24, 0.08);
  }
  /* Framed product screenshot beside the hero copy. */
  .hero-shot {
    margin: 0;
    border: 1px solid var(--border-medium);
    border-radius: 6px;
    overflow: hidden;
  }
  .hero-shot img {
    display: block;
    width: 100%;
    height: auto;
  }


  /* === UI FRAME (shared chrome for placeholders) === */
  .ui-frame {
    background: var(--surface-elevated);
    border: 1px solid var(--border-medium);
    border-radius: 6px;
    overflow: hidden;
    margin: 0;
  }
  .ui-frame-bar {
    display: flex; align-items: center; gap: 8px;
    padding: 9px 14px;
    background: var(--surface-2);
    border-bottom: 1px solid var(--border);
    font-family: var(--mono); font-size: 11px; color: var(--text-3);
    letter-spacing: 0.03em;
  }
  .ui-frame-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--border-strong); flex: none; }
  .ui-frame-path { margin-left: 6px; color: var(--text-2); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
  .ui-frame-body {
    padding: 22px;
    min-height: 220px;
    display: flex; flex-direction: column; gap: 12px;
    background:
      repeating-linear-gradient(0deg, transparent, transparent 38px, var(--border) 38px, var(--border) 39px);
  }
  .ui-frame-cap {
    padding: 10px 14px; border-top: 1px solid var(--border);
    font-family: var(--serif); font-style: italic; font-size: 12px; color: var(--text-3);
    background: var(--surface);
  }
  .ui-row { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
  .ui-pill { font-family: var(--mono); font-size: 11px; padding: 2px 8px; border-radius: 3px; border: 1px solid var(--border-medium); color: var(--text-2); background: var(--surface); }
  .ui-pill.high { color: var(--severity-high); border-color: #e0b3a8; background: #fbecec; }
  .ui-key { font-family: var(--mono); font-size: 12px; color: var(--text-3); }
  .ui-val { font-family: var(--mono); font-size: 12px; color: var(--text-1); }
  .ui-bar-line { height: 9px; border-radius: 3px; background: var(--surface-2); }

  /* === HOW IT WORKS (alternating) === */
  .flow { display: flex; flex-direction: column; gap: 28px; margin-top: 8px; }
  .flow-row {
    display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center;
    padding: 8px 0;
  }
  .flow-row:nth-child(even) .flow-text { order: 2; }
  .flow-row:nth-child(even) .flow-visual { order: 1; }
  /* framed product screenshot in a flow step */
  .flow-shot {
    margin: 0;
    border: 1px solid var(--border-medium);
    border-radius: 6px;
    overflow: hidden;
    background: var(--surface-elevated);
    box-shadow: 0 1px 0 var(--border), 0 8px 32px rgba(45, 36, 24, 0.08);
  }
  .flow-shot img { display: block; width: 100%; height: auto; }
  .flow-shot-cap {
    padding: 10px 16px;
    border-top: 1px solid var(--border);
    font-family: var(--serif);
    font-style: italic;
    font-size: 13px;
    color: var(--text-2);
    text-align: center;
  }
  .flow-step-num {
    font-family: var(--serif); font-size: 14px; font-style: italic; color: var(--accent);
    margin-bottom: 8px;
  }
  .flow-text h3 {
    font-family: var(--serif); font-size: 28px; font-weight: 400; line-height: 1.2;
    letter-spacing: -0.01em; color: var(--text-1); margin-bottom: 12px;
  }
  .flow-text h3 em { font-style: italic; color: var(--accent); }
  .flow-text p { color: var(--text-2); font-size: 16px; line-height: 1.6; max-width: 480px; }

  /* === PRODUCT PROOF === */
  .proof-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; margin-top: 8px; }
  /* framed product screenshots */
  .proof-shot {
    margin: 0;
    border: 1px solid var(--border-medium);
    border-radius: 6px;
    overflow: hidden;
    background: var(--surface-elevated);
    box-shadow: 0 1px 0 var(--border), 0 8px 32px rgba(45, 36, 24, 0.08);
  }
  .proof-shot-wide { grid-column: 1 / -1; }
  /* all four tiles the same height: each screenshot fills a fixed-height box,
     anchored to the top so headers stay visible and only the bottom is clipped
     (the taller disclosure-record shot loses its bottom) */
  .proof-shot img {
    display: block;
    width: 100%;
    height: 300px;
    object-fit: cover;
    object-position: top center;
  }
  .proof-cap {
    padding: 11px 16px;
    border-top: 1px solid var(--border);
    font-family: var(--serif);
    font-style: italic;
    font-size: 14px;
    color: var(--text-2);
    text-align: center;
  }
  .proof-primitives {
    display: flex; flex-wrap: wrap; gap: 10px; margin-top: 28px;
    padding-top: 24px; border-top: 1px solid var(--border);
  }
  .proof-primitive {
    font-family: var(--mono); font-size: 12px; color: var(--text-2);
    padding: 6px 12px; border: 1px solid var(--border-medium); border-radius: 3px; background: var(--surface);
  }
  .proof-primitive strong { color: var(--accent); font-weight: 500; }

  /* === DEVELOPER SPLIT === */
  .dev-split { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; margin-top: 8px; }
  .dev-points { display: flex; flex-direction: column; gap: 24px; }
  .dev-point h4 {
    font-family: var(--serif); font-size: 19px; font-weight: 400; color: var(--text-1);
    margin-bottom: 6px; letter-spacing: -0.005em;
  }
  .dev-point h4 em { font-style: italic; color: var(--accent); }
  .dev-point p { color: var(--text-2); font-size: 14px; line-height: 1.55; }

  /* === STANDARDS CARDS === */
  .standards-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 8px; }
  .standards-card { padding: 26px 24px; background: var(--surface); border: 1px solid var(--border); border-radius: 4px; }
  .standards-card .std-name { font-family: var(--serif); font-size: 22px; color: var(--text-1); margin-bottom: 10px; letter-spacing: -0.01em; }
  .standards-card p { color: var(--text-3); font-size: 13px; line-height: 1.55; margin-bottom: 14px; }
  .standards-card a { font-family: var(--serif); font-style: italic; font-size: 13px; }

  /* === URGENCY GRID === */
  .urgency-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 32px;
  }
  .urgency-card {
    padding: 28px 26px;
    background: var(--accent-tint);
    border: 1px solid var(--border-medium);
    border-radius: 4px;
  }
  .urgency-stat {
    font-family: var(--serif);
    font-size: 36px;
    font-weight: 400;
    color: var(--accent-deep);
    line-height: 1;
    letter-spacing: -0.015em;
    margin-bottom: 10px;
  }
  .urgency-stat em { font-style: italic; color: var(--accent); }
  .urgency-label {
    font-family: var(--serif);
    font-style: italic;
    font-size: 14px;
    color: var(--accent-hover);
    margin-bottom: 8px;
  }
  .urgency-desc {
    font-size: 13px;
    color: var(--text-2);
    line-height: 1.55;
  }

  /* === DESIGN PARTNER SECTION === */
  .partner-band {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 48px;
    margin-top: 12px;
  }
  .partner-status {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 5px 12px;
    background: var(--bg);
    border: 1px solid var(--border-medium);
    border-radius: 3px;
    font-size: 11px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-2);
    font-weight: 500;
    margin-bottom: 24px;
  }
  .partner-status .dot { width: 6px; height: 6px; background: var(--accent); border-radius: 50%; }
  .partner-band h3 {
    font-family: var(--serif);
    font-size: 32px;
    font-weight: 400;
    color: var(--text-1);
    margin-bottom: 16px;
    letter-spacing: -0.015em;
    line-height: 1.2;
  }
  .partner-band h3 em { font-style: italic; color: var(--accent); }
  .partner-band > p {
    color: var(--text-2);
    font-size: 17px;
    line-height: 1.6;
    margin-bottom: 20px;
    max-width: 720px;
    font-family: var(--serif);
  }
  .founder-sig {
    display: flex;
    flex-direction: column;
    gap: 1px;
    margin-bottom: 28px;
  }
  .founder-name {
    font-family: var(--serif);
    font-size: 17px;
    color: var(--text-1);
    font-weight: 500;
    letter-spacing: -0.005em;
  }
  .founder-title {
    font-family: var(--serif);
    font-style: italic;
    font-size: 14px;
    color: var(--text-3);
  }
  .partner-perks {
    display: flex;
    flex-wrap: wrap;
    gap: 22px;
    padding: 18px 0;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    margin-bottom: 36px;
  }
  .partner-perk {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--text-2);
  }
  .partner-perk .check { color: var(--accent); font-size: 14px; }

  /* Forms */
  .form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }
  .form-card {
    background: var(--bg);
    border: 1px solid var(--border-medium);
    border-radius: 4px;
    padding: 28px;
  }
  .form-card h4 {
    font-family: var(--serif);
    font-size: 22px;
    font-weight: 400;
    color: var(--text-1);
    margin-bottom: 8px;
    letter-spacing: -0.01em;
  }
  .form-card h4 em { font-style: italic; color: var(--accent); }
  .form-card .form-blurb {
    font-size: 14px;
    color: var(--text-3);
    margin-bottom: 22px;
    line-height: 1.55;
  }
  .form-row { display: flex; flex-direction: column; gap: 5px; margin-bottom: 14px; }
  .form-row label {
    font-family: var(--serif);
    font-style: italic;
    font-size: 13px;
    color: var(--text-3);
  }
  .form-row input, .form-row textarea, .form-row select {
    padding: 9px 12px;
    border: 1px solid var(--border-medium);
    border-radius: 3px;
    background: var(--surface-elevated);
    font-family: var(--sans);
    font-size: 14px;
    color: var(--text-1);
  }
  .form-row input:focus, .form-row textarea:focus, .form-row select:focus {
    outline: none;
    border-color: var(--accent);
  }
  .form-row textarea { resize: vertical; min-height: 64px; }
  .form-row-double { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
  .form-submit {
    margin-top: 6px;
    padding: 10px 18px;
    background: var(--accent);
    color: white;
    border: none;
    border-radius: 3px;
    font-family: var(--sans);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
  }
  .form-submit:hover { background: var(--accent-hover); }
  .form-note {
    font-size: 11px;
    color: var(--text-4);
    margin-top: 10px;
    font-style: italic;
    font-family: var(--serif);
  }
  .form-status {
    margin-top: 12px;
    padding: 10px 14px;
    border-radius: 4px;
    font-family: var(--sans);
    font-size: 13px;
    font-weight: 500;
    line-height: 1.4;
    border: 1px solid var(--border-medium);
    background: var(--bg-alt);
    color: var(--text-1);
  }
  .form-status[hidden] { display: none; }
  .form-row label .req { color: #b65a14; font-weight: 600; }
  .form-status.is-sending {
    background: var(--bg-alt);
    border-color: var(--border-medium);
    color: var(--text-1);
  }
  .form-status.is-success {
    background: #ecf7ec;
    border-color: #aedbae;
    color: #1f5c1f;
  }
  .form-status.is-error {
    background: #fbecec;
    border-color: #e3b3b3;
    color: #8f2020;
  }

  /* === FAQ === */
  .faq {
    max-width: 820px;
    margin-top: 8px;
  }
  .faq-item {
    border-bottom: 1px solid var(--border);
    padding: 22px 0;
  }
  .faq-item summary {
    list-style: none;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    font-family: var(--serif);
    font-size: 19px;
    color: var(--text-1);
    font-weight: 400;
    line-height: 1.4;
  }
  .faq-item summary::-webkit-details-marker { display: none; }
  .faq-item summary::after {
    content: '+';
    color: var(--accent);
    font-family: var(--serif);
    font-size: 22px;
    line-height: 1;
    flex-shrink: 0;
    transition: transform 0.2s ease;
  }
  .faq-item[open] summary::after {
    content: '−';
  }
  .faq-answer {
    padding-top: 14px;
    color: var(--text-2);
    font-size: 15px;
    line-height: 1.65;
    max-width: 700px;
  }

  /* === FOOTER === */
  .footer {
    background: var(--surface-2);
    border-top: 1px solid var(--border);
    padding: 56px 0 36px;
  }
  .footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 36px;
    margin-bottom: 40px;
  }
  .footer-brand .brand { font-size: 26px; margin-bottom: 8px; display: inline-flex; }
  .footer-tagline {
    font-family: var(--serif);
    font-style: italic;
    font-size: 14px;
    color: var(--text-3);
    margin-bottom: 16px;
  }
  .footer-disclaimer {
    font-size: 12px;
    color: var(--text-3);
    line-height: 1.55;
    max-width: 380px;
  }
  .footer-disclaimer strong { color: var(--text-1); font-weight: 600; }
  .footer-col h5 {
    font-family: var(--serif);
    font-style: italic;
    font-size: 13px;
    color: var(--text-3);
    margin-bottom: 12px;
    font-weight: 400;
  }
  .footer-col a {
    display: block;
    font-size: 13px;
    color: var(--text-2);
    margin-bottom: 8px;
  }
  .footer-col a:hover { color: var(--text-1); }
  .footer-bottom {
    padding-top: 28px;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 12px;
    color: var(--text-4);
  }
  .footer-bottom .schema-tag {
    font-family: var(--mono);
    color: var(--text-3);
  }

  /* === RESPONSIVE === */
  @media (max-width: 900px) {
    h1.hero-title { font-size: 52px; }
    .problem-grid,
    .urgency-grid,
    .form-grid,
    .form-row-double,
    .timeline-band,
    .footer-grid,
    .hero-split,
    .flow-row,
    .proof-grid,
    .dev-split,
    .standards-cards {
      grid-template-columns: 1fr;
    }
    .footer-grid { gap: 28px; }
    .hero-split { gap: 36px; }
    .flow-row { gap: 28px; }
    .flow-row:nth-child(even) .flow-text { order: 1; }
    .flow-row:nth-child(even) .flow-visual { order: 2; }
  }
  @media (max-width: 600px) {
    .container, .nav-inner { padding-left: 20px; padding-right: 20px; }
    h1.hero-title { font-size: 40px; }
    h2.section-title { font-size: 30px; }
    .hero-sub { font-size: 19px; }
    .hero { padding: 56px 0 48px; }
    .section { padding: 56px 0; }
    .partner-band { padding: 24px; }
    .problem-card { padding: 24px; }
    .timeline-band { padding: 28px; }
    .timeline-row { grid-template-columns: 96px 1fr; gap: 12px; }
    .hero-actions { flex-wrap: wrap; }
  }
  @media (max-width: 700px) {
    .nav-burger {
      display: flex;
      flex-direction: column;
      justify-content: center;
      gap: 5px;
      width: 40px;
      height: 36px;
      padding: 8px;
      cursor: pointer;
      border-radius: 3px;
    }
    .nav-burger span {
      display: block;
      height: 2px;
      width: 100%;
      background: var(--text-1);
      transition: transform 0.25s ease, opacity 0.2s ease;
    }
    .nav-links {
      position: absolute;
      top: 100%;
      left: 0;
      right: 0;
      flex-direction: column;
      align-items: stretch;
      gap: 0;
      background: var(--surface-elevated);
      border-bottom: 1px solid var(--border);
      box-shadow: 0 8px 24px rgba(45, 36, 24, 0.08);
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease;
    }
    .nav-links .nav-link,
    .nav-links .nav-cta {
      padding: 14px 24px;
      border-top: 1px solid var(--border);
      border-radius: 0;
      text-align: left;
    }
    .nav-links .nav-cta { color: var(--accent); background: transparent; }
    .nav-links .nav-cta:hover { background: var(--surface-2); color: var(--accent-hover); }
    .nav-toggle:checked ~ .nav-links { max-height: 320px; }
    .nav-toggle:checked ~ .nav-burger span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
    .nav-toggle:checked ~ .nav-burger span:nth-child(2) { opacity: 0; }
    .nav-toggle:checked ~ .nav-burger span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
  }

  /* === MULTIPAGE ARCHITECTURE (added for Parsias-style separate pages) === */

  /* active nav state */
  .nav-link.active { color: var(--text-1); }
  .nav-link.active::after {
    content: ""; display: block; height: 2px; background: var(--accent);
    margin-top: 3px; border-radius: 2px;
  }

  /* Home hero — split layout, compact padding consistent with .page-hero */
  .hero-full {
    padding: 84px 0 56px;
  }
  /* widen the home hero past the standard 1180px container so the dense
     registry screenshot renders larger; only affects .hero-full (home) */
  .hero-full .container { max-width: 1240px; }
  .hero-full .hero-split { width: 100%; }

  /* page hero — shorter than home hero, for interior pages */
  .page-hero {
    padding: 84px 0 56px;
  }
  .page-hero .section-label { margin-bottom: 14px; }
  .page-hero h1 {
    font-family: var(--serif);
    font-size: 54px;
    font-weight: 400;
    line-height: 1.06;
    letter-spacing: -0.02em;
    color: var(--text-1);
    margin-bottom: 22px;
    max-width: 820px;
    margin-left: auto;
    margin-right: auto;
    text-align: center;
  }
  .page-hero h1 em { font-style: italic; color: var(--accent); }
  .page-hero .page-hero-sub {
    font-family: var(--serif);
    font-size: 21px;
    color: var(--text-2);
    line-height: 1.5;
    max-width: 720px;
    margin-left: auto;
    margin-right: auto;
    text-align: center;
  }

  /* page-end CTA band — repeated foot on interior pages */
  .page-cta {
    border-top: 1px solid var(--border);
    background: var(--surface);
    padding: 72px 0;
    text-align: center;
  }
  .page-cta h2 {
    font-family: var(--serif);
    font-size: 38px;
    font-weight: 400;
    line-height: 1.15;
    letter-spacing: -0.015em;
    color: var(--text-1);
    margin-bottom: 16px;
  }
  .page-cta h2 em { font-style: italic; color: var(--accent); }
  .page-cta p {
    font-family: var(--serif);
    font-size: 18px;
    color: var(--text-2);
    max-width: 560px;
    margin: 0 auto 28px;
    line-height: 1.55;
  }
  .page-cta .hero-actions { justify-content: center; margin-bottom: 0; }

  @media (max-width: 600px) {
    .page-hero h1 { font-size: 38px; }
    .page-hero { padding: 56px 0 40px; }
    .hero-full { min-height: 0; padding: 48px 0; }
    .page-cta h2 { font-size: 28px; }
  }

  /* === PRIMITIVES (restored for platform page) === */
  .primitives {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 20px;
    margin-top: 8px;
  }
  .primitive {
    padding: 26px 20px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 4px;
    text-align: left;
  }
  .primitive-glyph {
    font-family: var(--mono);
    font-size: 12px;
    color: var(--accent);
    letter-spacing: 0.1em;
    margin-bottom: 14px;
  }
  .primitive-name {
    font-family: var(--serif);
    font-size: 22px;
    font-weight: 400;
    color: var(--text-1);
    margin-bottom: 10px;
    letter-spacing: -0.01em;
  }
  .primitive-desc {
    color: var(--text-3);
    font-size: 13px;
    line-height: 1.5;
  }
  @media (max-width: 900px) {
    .primitives { grid-template-columns: repeat(2, 1fr); }
  }

  /* === EU AI ACT COVERAGE LIST (standards page) === */
  .coverage-list { display: grid; grid-template-columns: 1fr 1fr; gap: 0 48px; margin-top: 8px; }
  .coverage-item {
    display: grid; grid-template-columns: 132px 1fr; gap: 18px;
    padding: 22px 0; border-bottom: 1px solid var(--border); align-items: baseline;
  }
  .coverage-ref {
    font-family: var(--mono); font-size: 12px; color: var(--accent);
    letter-spacing: 0.02em; line-height: 1.4;
  }
  .coverage-body h3 {
    font-family: var(--serif); font-size: 19px; font-weight: 400; color: var(--text-1);
    margin-bottom: 6px; letter-spacing: -0.005em; line-height: 1.25;
  }
  .coverage-body p { color: var(--text-2); font-size: 14px; line-height: 1.55; }
  .risk-chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 8px; }
  .risk-chip {
    font-family: var(--mono); font-size: 11px; color: var(--text-2);
    padding: 3px 9px; border: 1px solid var(--border-medium); border-radius: 3px; background: var(--surface);
  }
  .risk-chip.high { color: var(--severity-high); border-color: #e0b3a8; background: #fbecec; }
  .risk-chip.prohibited { color: #fff; background: var(--severity-high); border-color: var(--severity-high); }
  @media (max-width: 900px) {
    .coverage-list { grid-template-columns: 1fr; gap: 0; }
    .coverage-item { grid-template-columns: 110px 1fr; gap: 14px; }
  }