@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
  --canvas: #f7f7f4;
  --canvas-soft: #fafaf7;
  --surface-card: #ffffff;
  --surface-strong: #e6e5e0;
  --hairline: #e6e5e0;
  --hairline-soft: #efeee8;
  --hairline-strong: #cfcdc4;
  --ink: #26251e;
  --body: #5a5852;
  --muted: #807d72;
  --muted-soft: #a09c92;
  --primary: #f54e00;
  --primary-active: #d04200;
  --on-primary: #ffffff;
  --tl-thinking: #dfa88f;
  --tl-grep: #9fc9a2;
  --tl-read: #9fbbe0;
  --tl-edit: #c0a8dd;
  --tl-done: #c08532;
  --success: #1f8a65;
  --error: #cf2d56;
  --sans: 'Inter', system-ui, 'Helvetica Neue', Helvetica, Arial, sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
  --maxw: 1200px;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--canvas);
  color: var(--body);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.5;
  letter-spacing: -0.15px;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }

a { color: var(--ink); text-decoration: none; }
a:hover { text-decoration: underline; }

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

.skip-link {
  position: absolute; left: -999px; top: 0; background: var(--ink);
  color: var(--canvas); padding: 10px 16px; border-radius: 8px; z-index: 200;
}
.skip-link:focus { left: 16px; top: 16px; }

h1, h2, h3, h4 { color: var(--ink); font-weight: 400; margin: 0 0 16px; }
h1 { font-size: 72px; line-height: 1.1; letter-spacing: -2.16px; }
h2 { font-size: 36px; line-height: 1.2; letter-spacing: -0.72px; }
h3 { font-size: 26px; line-height: 1.25; letter-spacing: -0.325px; }
h4 { font-size: 22px; line-height: 1.3; letter-spacing: -0.11px; }
p { margin: 0 0 16px; }

.eyebrow {
  font-family: var(--mono);
  font-size: 11px; font-weight: 500; line-height: 1.4;
  letter-spacing: 0.88px; text-transform: uppercase; color: var(--muted);
  margin: 0 0 16px;
}

.top-nav { background: var(--canvas); border-bottom: 1px solid var(--hairline); position: sticky; top: 0; z-index: 100; }
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.wordmark { font-size: 18px; font-weight: 600; color: var(--ink); letter-spacing: -0.3px; }
.primary-menu { display: flex; align-items: center; gap: 24px; }
.nav-link { font-size: 14px; font-weight: 500; color: var(--body); }
.nav-link:hover { color: var(--ink); text-decoration: none; }
.nav-link.is-current { color: var(--ink); }
.nav-toggle { display: none; background: none; border: 0; cursor: pointer; padding: 8px; gap: 5px; flex-direction: column; }
.nav-toggle span { width: 22px; height: 2px; background: var(--ink); display: block; }

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  font-family: var(--sans); font-size: 14px; font-weight: 500; line-height: 1;
  border-radius: 8px; padding: 10px 18px; height: 40px; cursor: pointer;
  border: 1px solid transparent; transition: background .15s ease, color .15s ease;
}
.btn-primary { background: var(--primary); color: var(--on-primary); }
.btn-primary:hover { background: var(--primary-active); text-decoration: none; color: var(--on-primary); }
.btn-secondary { background: var(--surface-card); color: var(--ink); border-color: var(--hairline-strong); }
.btn-secondary:hover { text-decoration: none; }
.btn-dark { background: var(--ink); color: var(--canvas); height: 44px; padding: 12px 20px; }
.btn-dark:hover { color: var(--canvas); text-decoration: none; }
.btn-block { width: 100%; }

.section { padding: 80px 0; }
.section-tight { padding: 48px 0; }

.hero { background: var(--canvas); padding: 80px 0 48px; }
.hero-grid { display: grid; grid-template-columns: 1.05fr 1fr; gap: 48px; align-items: center; }
.hero-lead { font-size: 18px; color: var(--body); max-width: 46ch; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 24px; }
.hero-figure { border: 1px solid var(--hairline); border-radius: 12px; overflow: hidden; background: var(--surface-card); }
.hero-figure img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.figure-caption { font-size: 13px; color: var(--muted); padding: 12px 16px; border-top: 1px solid var(--hairline-soft); margin: 0; }

.band-soft { background: var(--canvas-soft); border-top: 1px solid var(--hairline-soft); border-bottom: 1px solid var(--hairline-soft); }

.section-head { max-width: 60ch; margin-bottom: 32px; }

.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.card-grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }

.feature-card {
  background: var(--surface-card); border: 1px solid var(--hairline);
  border-radius: 12px; padding: 0; overflow: hidden; display: flex; flex-direction: column;
}
.feature-card .card-img { width: 100%; aspect-ratio: 16 / 10; object-fit: cover; }
.card-body { padding: 24px; display: flex; flex-direction: column; flex: 1; }
.card-title { font-size: 22px; line-height: 1.3; letter-spacing: -0.11px; }
.card-text { color: var(--body); font-size: 16px; flex: 1; }
.card-more { font-size: 14px; font-weight: 500; color: var(--ink); margin-top: 16px; }

.badge {
  display: inline-block; font-family: var(--mono); font-size: 11px; font-weight: 500;
  letter-spacing: 0.88px; text-transform: uppercase; color: var(--ink);
  background: var(--surface-strong); border-radius: 9999px; padding: 4px 10px;
}

.timeline { border: 1px solid var(--hairline); border-radius: 12px; background: var(--surface-card); padding: 24px; }
.timeline-row { display: flex; gap: 16px; padding: 14px 0; border-bottom: 1px solid var(--hairline-soft); }
.timeline-row:last-child { border-bottom: 0; }
.tl-pill {
  font-family: var(--mono); font-size: 11px; font-weight: 500; letter-spacing: 0.88px;
  text-transform: uppercase; color: var(--ink); border-radius: 9999px; padding: 4px 10px;
  white-space: nowrap; align-self: flex-start; min-width: 92px; text-align: center;
}
.tl-pill.year { background: var(--surface-strong); }
.tl-1 { background: var(--tl-thinking); }
.tl-2 { background: var(--tl-grep); }
.tl-3 { background: var(--tl-read); }
.tl-4 { background: var(--tl-edit); }
.tl-5 { background: var(--tl-done); color: var(--on-primary); }
.tl-text { color: var(--body); }
.tl-text strong { color: var(--ink); font-weight: 600; }

.prose { max-width: 70ch; }
.prose p, .prose li { color: var(--body); }
.prose h2 { margin-top: 48px; }
.prose h3 { margin-top: 32px; }
.prose ul, .prose ol { padding-left: 20px; margin: 0 0 16px; }
.prose li { margin-bottom: 8px; }
.prose a { color: var(--ink); text-decoration: underline; text-underline-offset: 2px; }

.article-hero { border: 1px solid var(--hairline); border-radius: 12px; overflow: hidden; background: var(--surface-card); margin-bottom: 32px; }
.article-hero img { width: 100%; aspect-ratio: 21 / 9; object-fit: cover; }
.article-meta { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; margin-bottom: 24px; color: var(--muted); font-size: 13px; }

.callout { background: var(--canvas-soft); border: 1px solid var(--hairline); border-left: 3px solid var(--primary); border-radius: 12px; padding: 20px 24px; margin: 24px 0; }
.callout p:last-child { margin-bottom: 0; }

.code-block { background: var(--surface-card); border: 1px solid var(--hairline); border-radius: 12px; padding: 20px; font-family: var(--mono); font-size: 13px; color: var(--ink); overflow-x: auto; }

.fact-table { width: 100%; border-collapse: collapse; border: 1px solid var(--hairline); border-radius: 12px; overflow: hidden; margin: 24px 0; }
.fact-table th, .fact-table td { text-align: left; padding: 12px 16px; border-bottom: 1px solid var(--hairline-soft); font-size: 15px; }
.fact-table th { background: var(--surface-strong); color: var(--ink); font-weight: 600; }
.fact-table tr:last-child td { border-bottom: 0; }

.related { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; margin-top: 24px; }
.related-card { border: 1px solid var(--hairline); border-radius: 12px; padding: 16px 20px; background: var(--surface-card); }
.related-card .eyebrow { margin-bottom: 8px; }
.related-card a { color: var(--ink); font-weight: 500; }

.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }
.form-card { background: var(--surface-card); border: 1px solid var(--hairline); border-radius: 12px; padding: 32px; }
.field { margin-bottom: 16px; }
.field label { display: block; font-size: 14px; font-weight: 600; color: var(--ink); margin-bottom: 6px; }
.field input {
  width: 100%; height: 44px; padding: 12px 16px; border: 1px solid var(--hairline-strong);
  border-radius: 8px; background: var(--surface-card); color: var(--ink); font-family: var(--sans); font-size: 16px;
}
.field input:focus { outline: 2px solid var(--primary); outline-offset: 1px; border-color: var(--primary); }
.form-status { font-size: 14px; margin-top: 8px; min-height: 20px; }
.form-status.success { color: var(--success); }
.form-status.error { color: var(--error); }

.contact-list { list-style: none; padding: 0; margin: 0; }
.contact-list li { padding: 12px 0; border-bottom: 1px solid var(--hairline-soft); color: var(--body); }
.contact-list li:last-child { border-bottom: 0; }
.contact-list strong { display: block; color: var(--ink); font-size: 13px; font-family: var(--mono); letter-spacing: 0.5px; text-transform: uppercase; margin-bottom: 2px; }

.cta-band { background: var(--canvas); border-top: 1px solid var(--hairline); padding: 96px 0; text-align: center; }
.cta-band h2 { margin-bottom: 12px; }
.cta-band p { max-width: 52ch; margin: 0 auto 24px; }

.footer { background: var(--canvas); border-top: 1px solid var(--hairline); padding: 64px 0 48px; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 32px; }
.footer-brand .wordmark { display: inline-block; margin-bottom: 12px; }
.footer-note { font-size: 14px; color: var(--muted); max-width: 36ch; }
.footer-head { font-size: 13px; font-family: var(--mono); letter-spacing: 0.6px; text-transform: uppercase; color: var(--ink); margin-bottom: 12px; }
.footer-link { display: block; font-size: 14px; color: var(--body); padding: 4px 0; }
.footer-bottom { margin-top: 48px; padding-top: 24px; border-top: 1px solid var(--hairline-soft); }
.footer-disclaimer { font-size: 13px; color: var(--muted); max-width: 80ch; }
.footer-copy { font-size: 13px; color: var(--muted-soft); margin: 0; }

.cookie-banner {
  position: fixed; left: 16px; right: 16px; bottom: 16px; z-index: 150;
  background: var(--surface-card); border: 1px solid var(--hairline-strong);
  border-radius: 12px; padding: 20px 24px; max-width: 760px; margin: 0 auto;
  display: flex; gap: 24px; align-items: center; justify-content: space-between;
}
.cookie-banner[hidden] { display: none; }
.cookie-text { font-size: 14px; color: var(--body); margin: 0; }
.cookie-actions { display: flex; gap: 12px; flex-shrink: 0; }

@media (max-width: 1024px) {
  h1 { font-size: 56px; letter-spacing: -1.5px; }
  .card-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .nav-toggle { display: inline-flex; }
  .primary-menu {
    display: none; position: absolute; top: 64px; left: 0; right: 0;
    background: var(--canvas); border-bottom: 1px solid var(--hairline);
    flex-direction: column; align-items: flex-start; gap: 0; padding: 8px 24px 16px;
  }
  .primary-menu.open { display: flex; }
  .primary-menu .nav-link { padding: 10px 0; width: 100%; }
  .hero-grid, .contact-grid { grid-template-columns: 1fr; gap: 32px; }
  .card-grid, .card-grid-2, .related { grid-template-columns: 1fr; }
  .cookie-banner { flex-direction: column; align-items: stretch; }
  .cookie-actions .btn { flex: 1; }
}

@media (max-width: 640px) {
  h1 { font-size: 34px; letter-spacing: -1px; }
  h2 { font-size: 28px; letter-spacing: -0.5px; }
  .section { padding: 56px 0; }
  .cta-band { padding: 64px 0; }
}