: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;
  --success: #1f8a65;
  --error: #cf2d56;
  --t-thinking: #dfa88f;
  --t-grep: #9fc9a2;
  --t-read: #9fbbe0;
  --t-edit: #c0a8dd;
  --t-done: #c08532;
  --maxw: 1200px;
  --r-xs: 4px;
  --r-sm: 6px;
  --r-md: 8px;
  --r-lg: 12px;
  --r-xl: 16px;
  --r-pill: 9999px;
  --font-sans: "Inter", system-ui, "Helvetica Neue", Helvetica, Arial, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
}

* { box-sizing: border-box; }

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

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

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

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

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

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

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; }

.lead { font-size: 18px; color: var(--body); }

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

.badge {
  display: inline-block;
  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;
}

.top-nav {
  background: var(--canvas);
  border-bottom: 1px solid var(--hairline);
  position: sticky;
  top: 0;
  z-index: 50;
}

.top-nav .container {
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.wordmark {
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: -0.4px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.wordmark .dot { color: var(--primary); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--ink);
  letter-spacing: 0;
}

.nav-toggle {
  display: none;
  background: var(--surface-card);
  border: 1px solid var(--hairline-strong);
  border-radius: var(--r-md);
  width: 40px;
  height: 40px;
  cursor: pointer;
  font-size: 18px;
  color: var(--ink);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 500;
  border-radius: var(--r-md);
  cursor: pointer;
  border: 1px solid transparent;
  text-decoration: none;
  line-height: 1;
}
.btn:hover { text-decoration: none; }

.btn-primary {
  background: var(--primary);
  color: var(--on-primary);
  padding: 10px 18px;
  height: 40px;
}
.btn-primary:hover { background: var(--primary-active); color: var(--on-primary); }

.btn-secondary {
  background: var(--surface-card);
  color: var(--ink);
  border-color: var(--hairline-strong);
  padding: 10px 18px;
  height: 40px;
}

.btn-ink {
  background: var(--ink);
  color: var(--canvas);
  padding: 12px 20px;
  height: 44px;
}
.btn-ink:hover { color: var(--canvas); opacity: 0.92; }

.btn-text {
  color: var(--ink);
  padding: 10px 4px;
  height: 40px;
}

.hero {
  background: var(--canvas);
  border-bottom: 1px solid var(--hairline);
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 48px;
  align-items: center;
}
.hero h1 { margin-bottom: 20px; }
.hero .lead { max-width: 44ch; margin-bottom: 24px; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }

.media-card {
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: var(--r-lg);
  overflow: hidden;
}
.media-card img { width: 100%; height: 100%; object-fit: cover; aspect-ratio: 4 / 3; }
.media-card figcaption {
  font-size: 13px;
  color: var(--muted);
  padding: 12px 16px;
  border-top: 1px solid var(--hairline-soft);
}

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

.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 .title { font-size: 18px; font-weight: 600; color: var(--ink); margin: 0 0 8px; }

.article-card { display: flex; flex-direction: column; padding: 0; overflow: hidden; }
.article-card img { aspect-ratio: 16 / 10; object-fit: cover; width: 100%; }
.article-card .card-body { padding: 20px 24px 24px; }
.article-card .meta { font-size: 13px; color: var(--muted); margin-bottom: 8px; }

.timeline {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 8px;
  padding: 0;
  list-style: none;
}
.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;
}
.pill-thinking { background: var(--t-thinking); }
.pill-grep { background: var(--t-grep); }
.pill-read { background: var(--t-read); }
.pill-edit { background: var(--t-edit); }
.pill-done { background: var(--t-done); color: var(--on-primary); }

.prose { max-width: 72ch; }
.prose h2 { margin-top: 40px; }
.prose h3 { margin-top: 28px; }
.prose ul, .prose ol { margin: 0 0 16px; padding-left: 22px; }
.prose li { margin-bottom: 8px; }
.prose figure { margin: 24px 0; }

.callout {
  background: var(--canvas-soft);
  border: 1px solid var(--hairline);
  border-left: 3px solid var(--t-done);
  border-radius: var(--r-md);
  padding: 16px 20px;
  margin: 24px 0;
}
.callout .label { color: var(--t-done); margin-bottom: 8px; }

.code-block {
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: var(--r-lg);
  padding: 20px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ink);
  overflow-x: auto;
  margin: 24px 0;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 14px;
}
.data-table th, .data-table td {
  text-align: left;
  padding: 12px 16px;
  border-bottom: 1px solid var(--hairline);
}
.data-table th { color: var(--ink); font-weight: 600; background: var(--canvas-soft); }

.breadcrumb { font-size: 13px; color: var(--muted); margin-bottom: 16px; }
.breadcrumb a { color: var(--muted); }

.article-hero { margin: 0 0 32px; }
.article-hero img { border-radius: var(--r-lg); aspect-ratio: 16 / 8; object-fit: cover; width: 100%; border: 1px solid var(--hairline); }
.article-meta { font-size: 13px; color: var(--muted); margin-bottom: 8px; }

.layout-split { display: grid; grid-template-columns: minmax(0,1fr) 280px; gap: 48px; }
.aside-card { position: sticky; top: 88px; }
.aside-card ul { list-style: none; margin: 0; padding: 0; }
.aside-card li { margin-bottom: 10px; font-size: 14px; }

.form {
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: var(--r-lg);
  padding: 32px;
}
.field { margin-bottom: 16px; }
.field label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 6px;
}
.field input, .field textarea {
  width: 100%;
  background: var(--surface-card);
  color: var(--ink);
  border: 1px solid var(--hairline-strong);
  border-radius: var(--r-md);
  padding: 12px 16px;
  font-family: inherit;
  font-size: 16px;
}
.field input { height: 44px; }
.field textarea { min-height: 120px; resize: vertical; }
.field input:focus, .field textarea:focus {
  outline: none;
  border-color: var(--ink);
}
.form-status {
  margin-top: 16px;
  font-size: 14px;
  color: var(--success);
  display: none;
}
.form-status.show { display: block; }
.btn[disabled] { opacity: 0.6; cursor: progress; }

.contact-list { list-style: none; margin: 0; padding: 0; }
.contact-list li { margin-bottom: 12px; font-size: 15px; }
.contact-list .label { margin-bottom: 2px; }

.footer {
  background: var(--canvas);
  border-top: 1px solid var(--hairline);
  padding: 64px 0 48px;
  color: var(--body);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr repeat(3, 1fr);
  gap: 32px;
  margin-bottom: 40px;
}
.footer h5 {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.88px;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 16px;
}
.footer ul { list-style: none; margin: 0; padding: 0; }
.footer li { margin-bottom: 10px; }
.footer-link { font-size: 14px; color: var(--body); }
.footer-bottom {
  border-top: 1px solid var(--hairline);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  color: var(--muted);
}
.footer .disclaimer { max-width: 60ch; font-size: 13px; color: var(--muted); margin-top: 12px; }

.cookie-banner {
  position: fixed;
  left: 24px;
  right: 24px;
  bottom: 24px;
  max-width: 760px;
  margin: 0 auto;
  background: var(--surface-card);
  border: 1px solid var(--hairline-strong);
  border-radius: var(--r-lg);
  padding: 20px 24px;
  display: none;
  z-index: 100;
}
.cookie-banner.show { display: flex; gap: 16px; align-items: center; flex-wrap: wrap; }
.cookie-banner p { margin: 0; flex: 1 1 320px; font-size: 14px; color: var(--body); }
.cookie-actions { display: flex; gap: 12px; }

@media (max-width: 1024px) {
  h1 { font-size: 56px; letter-spacing: -1.5px; }
  .hero-grid { grid-template-columns: 1fr; }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .layout-split { grid-template-columns: 1fr; }
  .aside-card { position: static; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: flex-start;
    background: var(--canvas);
    border-bottom: 1px solid var(--hairline);
    padding: 16px 24px;
    gap: 16px;
  }
  .nav-links.open { display: flex; }
  .nav-toggle { display: inline-flex; align-items: center; justify-content: center; }
  .section { padding: 56px 0; }
}

@media (max-width: 640px) {
  h1 { font-size: 32px; letter-spacing: -1px; }
  h2 { font-size: 28px; letter-spacing: -0.5px; }
  .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .form { padding: 24px; }
}