:root {
  --bg: #f7f8fb;
  --surface: #ffffff;
  --fg: #0f172a;
  --muted: #64748b;
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --navy: #0f172a;
  --success: #16a34a;
  --brand: #10b981;
  --border: #e5e7eb;
  --chip: #eff6ff;
  --radius: 12px;
  --shadow: 0 1px 2px rgba(15, 23, 42, 0.06), 0 8px 24px rgba(15, 23, 42, 0.06);
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: Inter, ui-sans-serif, system-ui, sans-serif;
  line-height: 1.6;
}
a { color: inherit; text-decoration: none; }
h1, h2, p { margin: 0; }
.wrap { max-width: 920px; margin: 0 auto; padding: 0 16px; }
.muted { color: var(--muted); font-size: 14px; }

.header { background: rgba(255,255,255,.96); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 10; }
.header-inner { max-width: 920px; margin: 0 auto; padding: 0 16px; height: 60px; display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.logo { display: flex; align-items: center; gap: 8px; font-weight: 650; font-size: 17px; }
.logo small { font-weight: 500; font-size: 12px; color: var(--muted); }
.logo-mark { width: 28px; height: 28px; border-radius: 6px; background: var(--brand); color: #fff; display: grid; place-items: center; flex: none; }
.nav { display: flex; align-items: center; gap: 16px; font-size: 14px; color: var(--muted); }
.nav a:hover { color: var(--fg); }

.btn { display: inline-flex; align-items: center; justify-content: center; border: 0; border-radius: 999px; padding: 9px 16px; font: 550 14px Inter, sans-serif; cursor: pointer; background: var(--primary); color: #fff; }
.nav .btn { color: #fff; }
.btn-outline { background: #fff; color: var(--fg); box-shadow: inset 0 0 0 1px var(--border); border-radius: 8px; }
.btn-white { background: #fff; color: var(--primary-dark); }
.btn-ghost { background: transparent; color: #fff; box-shadow: inset 0 0 0 1px rgba(255,255,255,.4); }

main { padding: 32px 16px 64px; }
.crumbs { font-size: 13px; color: var(--muted); }
.crumbs a { color: var(--primary); }
h1 { font-size: clamp(26px, 4vw, 38px); letter-spacing: -0.02em; line-height: 1.2; margin-top: 8px; }
.lede { font-size: 18px; color: var(--muted); margin-top: 12px; }

.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow); margin-top: 20px; }
.card h2 { font-size: 18px; margin-bottom: 10px; }
.card ul, .card ol { margin: 0; padding-left: 20px; }
.card li { margin: 6px 0; }
.two { display: grid; gap: 0 20px; }
@media (min-width: 768px) { .two { grid-template-columns: 1fr 1fr; } }

blockquote { margin: 0 0 12px; padding: 12px 16px; background: var(--chip); border-left: 3px solid var(--primary); border-radius: 8px; font-weight: 550; }
blockquote .label { display: block; font-size: 11px; letter-spacing: .12em; text-transform: uppercase; color: var(--primary); font-weight: 650; margin-bottom: 4px; }

.checklist { list-style: none; padding-left: 0 !important; }
.checklist li { position: relative; padding-left: 26px; }
.checklist li::before { content: "✓"; position: absolute; left: 0; top: 0; color: var(--success); font-weight: 700; }

.route { border-left: 4px solid var(--primary); }
.ma { background: #fffbeb; border-color: #fde68a; }
.ma h2 { color: #92400e; }

.tpl-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; }
.tpl-head h2 { margin: 0; }
pre { margin: 12px 0 0; padding: 16px; background: var(--bg); border: 1px solid var(--border); border-radius: 8px; font: 13.5px/1.6 ui-monospace, "SFMono-Regular", Consolas, monospace; white-space: pre-wrap; word-wrap: break-word; overflow-x: auto; }

.cta { margin-top: 32px; background: var(--primary-dark); color: #fff; border-radius: 16px; padding: 28px 24px; text-align: center; }
.cta h2 { font-size: clamp(20px, 3vw, 26px); }
.cta p { margin-top: 10px; color: rgba(255,255,255,.88); }
.cta-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; margin-top: 18px; }

.rel-title { font-size: 18px; margin-top: 32px; }
.rel-grid, .code-grid { display: grid; gap: 12px; margin-top: 12px; }
@media (min-width: 640px) { .rel-grid { grid-template-columns: repeat(3, 1fr); } .code-grid { grid-template-columns: 1fr 1fr; } }
@media (min-width: 900px) { .code-grid { grid-template-columns: repeat(3, 1fr); } }
.rel, .code-card { display: flex; flex-direction: column; gap: 4px; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; box-shadow: var(--shadow); transition: border-color .15s; }
.rel:hover, .code-card:hover { border-color: var(--primary); }
.rel b, .code-card b { color: var(--primary); font-size: 17px; }
.rel span, .code-card span { font-size: 14px; color: var(--muted); }
.code-card em { font-style: normal; font-size: 13px; font-weight: 600; color: var(--primary); margin-top: 6px; }
.code-grid { margin-top: 28px; }

.footer { background: var(--navy); color: rgba(255,255,255,.75); font-size: 13px; padding: 20px 0; }
.footer a { color: #fff; }
.footer .disclaimer { margin-top: 6px; color: rgba(255,255,255,.55); font-size: 12px; }

@media (max-width: 480px) {
  .nav a:not(.btn) { display: none; }
  .logo small { display: none; }
}