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

:root {
  --canvas: #f7f7f4;
  --canvas-soft: #fafaf7;
  --surface-card: #ffffff;
  --surface-strong: #e6e5e0;
  --hairline: #e6e5e0;
  --hairline-soft: #efeee8;
  --hairline-strong: #cfcdc4;
  --primary: #f54e00;
  --primary-active: #d04200;
  --ink: #26251e;
  --body: #5a5852;
  --muted: #807d72;
  --muted-soft: #a09c92;
  --on-primary: #ffffff;
  --tl-thinking: #dfa88f;
  --tl-grep: #9fc9a2;
  --tl-read: #9fbbe0;
  --tl-edit: #c0a8dd;
  --tl-done: #c08532;
  --success: #1f8a65;
  --error: #cf2d56;
  --maxw: 1200px;
  --r-xs: 4px;
  --r-sm: 6px;
  --r-md: 8px;
  --r-lg: 12px;
  --r-xl: 16px;
  --r-pill: 9999px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--canvas);
  color: var(--body);
  font-family: 'Inter', system-ui, 'Helvetica Neue', Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.5;
  letter-spacing: -0.15px;
  -webkit-font-smoothing: antialiased;
}

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

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

.eyebrow {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.88px;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 12px;
  display: inline-block;
}

.top-nav {
  background: var(--canvas);
  border-bottom: 1px solid var(--hairline);
  position: sticky;
  top: 0;
  z-index: 50;
}
.nav-inner { height: 64px; display: flex; align-items: center; justify-content: space-between; }
.brand { display: flex; align-items: center; gap: 10px; }
.brand:hover { text-decoration: none; }
.brand-mark {
  width: 18px; height: 18px; border-radius: var(--r-xs);
  background: var(--primary);
  display: inline-block;
}
.brand-word { font-size: 18px; font-weight: 600; color: var(--ink); letter-spacing: -0.3px; }
.nav-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-active { color: var(--ink); }
.nav-toggle { display: none; background: none; border: none; flex-direction: column; gap: 4px; cursor: pointer; padding: 8px; }
.nav-toggle span { width: 22px; height: 2px; background: var(--ink); display: block; }

.section { padding: 80px 0; }
.section-tight { padding: 56px 0; }
.section + .section { border-top: 1px solid var(--hairline-soft); }

.hero { padding: 80px 0 64px; }
.hero-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 48px; align-items: center; }
.hero h1 { margin-bottom: 20px; }
.hero-sub { font-size: 18px; color: var(--body); max-width: 46ch; margin-bottom: 24px; }
.hero-figure { margin: 0; }
.hero-figure img { width: 100%; height: 420px; object-fit: cover; border-radius: var(--r-lg); border: 1px solid var(--hairline); display: block; }
figcaption { font-size: 13px; color: var(--muted); margin-top: 8px; }

.badge-pill {
  background: var(--surface-strong);
  color: var(--ink);
  font-size: 11px; font-weight: 600; letter-spacing: 0.88px; text-transform: uppercase;
  border-radius: var(--r-pill); padding: 4px 10px; display: inline-block;
}

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 14px; font-weight: 500; line-height: 1;
  border-radius: var(--r-md); padding: 12px 18px; 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; }
.btn-secondary { background: var(--surface-card); color: var(--ink); border-color: var(--hairline-strong); }
.btn-secondary:hover { text-decoration: none; border-color: var(--ink); }
.btn-ink { background: var(--ink); color: var(--canvas); padding: 13px 20px; }
.btn-ink:hover { text-decoration: none; opacity: 0.92; }
.text-link { color: var(--ink); font-weight: 500; border-bottom: 1px solid var(--hairline-strong); }
.text-link:hover { border-color: var(--primary); text-decoration: none; }

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

.card {
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: var(--r-lg);
  padding: 24px;
}
.card h3 { font-size: 22px; }
.card .card-kicker { font-size: 11px; font-weight: 600; letter-spacing: 0.88px; text-transform: uppercase; color: var(--muted); margin-bottom: 12px; display: block; }
.card p { margin-bottom: 12px; }

.article-card { overflow: hidden; padding: 0; display: flex; flex-direction: column; }
.article-card img { width: 100%; height: 200px; object-fit: cover; display: block; border-bottom: 1px solid var(--hairline); }
.article-card .article-body { padding: 24px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.article-card h3 { font-size: 22px; margin-bottom: 4px; }
.article-card .article-body p { color: var(--body); margin: 0; }
.article-card .text-link { margin-top: auto; align-self: flex-start; }

.timeline { display: flex; flex-wrap: wrap; gap: 10px; margin: 4px 0 0; padding: 0; list-style: none; }
.tl-pill { font-size: 11px; font-weight: 600; letter-spacing: 0.88px; text-transform: uppercase; color: var(--ink); border-radius: var(--r-pill); padding: 4px 10px; }
.tl-thinking { background: var(--tl-thinking); }
.tl-grep { background: var(--tl-grep); }
.tl-read { background: var(--tl-read); }
.tl-edit { background: var(--tl-edit); }
.tl-done { background: var(--tl-done); color: var(--on-primary); }

.code-block {
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: var(--r-lg);
  padding: 20px;
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 13px;
  color: var(--ink);
  overflow-x: auto;
  margin: 0 0 16px;
}
code { font-family: 'JetBrains Mono', ui-monospace, monospace; font-size: 0.92em; color: var(--ink); }

.article-wrap { max-width: 760px; margin: 0 auto; }
.article-hero img { width: 100%; height: 380px; object-fit: cover; border-radius: var(--r-lg); border: 1px solid var(--hairline); display: block; }
.article-meta { font-size: 13px; color: var(--muted); margin: 16px 0 0; }
.article-wrap h2 { font-size: 30px; margin-top: 48px; }
.article-wrap h3 { font-size: 22px; margin-top: 32px; }
.article-wrap p, .article-wrap li { font-size: 16px; letter-spacing: 0.08px; color: var(--body); }
.article-wrap ul, .article-wrap ol { padding-left: 20px; margin: 0 0 16px; }
.article-wrap li { margin-bottom: 8px; }
.lead { font-size: 19px; color: var(--ink); line-height: 1.5; }

.callout {
  background: var(--canvas-soft);
  border: 1px solid var(--hairline);
  border-left: 3px solid var(--primary);
  border-radius: var(--r-md);
  padding: 20px 24px;
  margin: 0 0 16px;
}
.callout p:last-child { margin-bottom: 0; }
.callout .callout-label { font-size: 11px; font-weight: 600; letter-spacing: 0.88px; text-transform: uppercase; color: var(--muted); display: block; margin-bottom: 8px; }

.data-table { width: 100%; border-collapse: collapse; margin: 0 0 16px; font-size: 15px; }
.data-table th, .data-table td { text-align: left; padding: 12px 14px; border-bottom: 1px solid var(--hairline); }
.data-table th { color: var(--ink); font-weight: 600; background: var(--canvas-soft); }
.data-table caption { text-align: left; font-size: 13px; color: var(--muted); margin-bottom: 8px; }

.divider { height: 1px; background: var(--hairline); border: 0; margin: 48px 0; }

.figure { margin: 32px 0; }
.figure img { width: 100%; border-radius: var(--r-lg); border: 1px solid var(--hairline); display: block; }

.related { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; margin-top: 16px; }
.related a { display: block; background: var(--surface-card); border: 1px solid var(--hairline); border-radius: var(--r-lg); padding: 20px; }
.related a:hover { text-decoration: none; border-color: var(--hairline-strong); }
.related .r-kicker { font-size: 11px; font-weight: 600; letter-spacing: 0.88px; text-transform: uppercase; color: var(--muted); display: block; margin-bottom: 6px; }
.related .r-title { color: var(--ink); font-size: 17px; }

.contact-grid { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 48px; align-items: start; }
.form-field { margin-bottom: 16px; }
.form-field label { display: block; font-size: 14px; font-weight: 600; color: var(--ink); margin-bottom: 6px; }
.form-field input, .form-field textarea {
  width: 100%;
  background: var(--surface-card);
  border: 1px solid var(--hairline-strong);
  border-radius: var(--r-md);
  padding: 12px 16px;
  font: inherit;
  color: var(--ink);
  min-height: 44px;
}
.form-field textarea { min-height: 120px; resize: vertical; }
.form-field input:focus, .form-field textarea:focus { outline: none; border-color: var(--ink); }
.form-field input:invalid:not(:placeholder-shown) { border-color: var(--error); }
.form-status { font-size: 14px; margin-top: 4px; min-height: 20px; }
.form-status.is-success { color: var(--success); font-weight: 500; }
.btn[disabled] { opacity: 0.6; cursor: progress; }

.page-head { padding: 64px 0 0; }
.page-head h1 { font-size: 48px; letter-spacing: -1.4px; }

.legal h2 { font-size: 24px; margin-top: 40px; }
.legal p, .legal li { color: var(--body); }

.cookie-banner {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 80;
  background: var(--surface-card);
  border-top: 1px solid var(--hairline-strong);
}
.cookie-inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 16px 24px; }
.cookie-text { margin: 0; font-size: 14px; color: var(--body); max-width: 70ch; }
.cookie-actions { display: flex; gap: 12px; flex-shrink: 0; }

.footer { background: var(--canvas); border-top: 1px solid var(--hairline); padding: 64px 0 48px; margin-top: 0; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr 1fr; gap: 32px; }
.footer-head { font-size: 11px; font-weight: 600; letter-spacing: 0.88px; text-transform: uppercase; color: var(--muted); margin-bottom: 16px; }
.footer-link { display: block; font-size: 14px; color: var(--body); margin-bottom: 10px; }
.footer-link:hover { color: var(--ink); }
.footer-note { font-size: 14px; color: var(--body); max-width: 34ch; margin: 12px 0 8px; }
.footer-meta { font-size: 13px; color: var(--muted); }
.footer-bottom { margin-top: 40px; padding-top: 24px; border-top: 1px solid var(--hairline); }
.footer-disclaimer { font-size: 13px; color: var(--muted); margin-bottom: 8px; }
.footer-copy { font-size: 13px; color: var(--muted-soft); margin: 0; }

@media (max-width: 1024px) {
  h1 { font-size: 56px; letter-spacing: -1.6px; }
  .hero-grid { grid-template-columns: 1fr; gap: 32px; }
  .hero-figure img { height: 340px; }
  .footer-grid { grid-template-columns: 1fr 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
  .contact-grid { grid-template-columns: 1fr; gap: 32px; }
}

@media (max-width: 768px) {
  .nav-toggle { display: flex; }
  .nav-menu {
    display: none; position: absolute; top: 64px; left: 0; right: 0;
    flex-direction: column; align-items: flex-start; gap: 4px;
    background: var(--canvas); border-bottom: 1px solid var(--hairline);
    padding: 12px 24px 20px;
  }
  .nav-menu.is-open { display: flex; }
  .nav-link { padding: 8px 0; width: 100%; }
}

@media (max-width: 640px) {
  h1 { font-size: 32px; letter-spacing: -0.8px; }
  h2 { font-size: 28px; letter-spacing: -0.5px; }
  .section { padding: 56px 0; }
  .grid-3, .grid-2, .related { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .cookie-inner { flex-direction: column; align-items: flex-start; }
  .hero-figure img { height: 260px; }
  .page-head h1 { font-size: 34px; }
}