:root {
  --bg: #f7f8fa;
  --surface: #ffffff;
  --ink: #1a1f2e;
  --muted: #5c6578;
  --border: #e2e6ef;
  --accent: #0b6e4f;
  --accent-hover: #095a41;
  --accent-soft: #e6f4ef;
  --warn: #8a5a00;
  --warn-bg: #fff8e6;
  --radius: 10px;
  --shadow: 0 1px 2px rgba(26, 31, 46, 0.06), 0 4px 12px rgba(26, 31, 46, 0.04);
  --max: 720px;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  font-size: 1.05rem;
  line-height: 1.6;
  color: var(--ink);
  background: var(--bg);
}

a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 2px; }
a:hover { color: var(--accent-hover); }

.wrap {
  width: min(100% - 2rem, var(--max));
  margin-inline: auto;
}

.site-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 20;
}

.site-header .inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 0;
  width: min(100% - 2rem, 960px);
  margin-inline: auto;
}

.logo {
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.logo span { color: var(--accent); }

.nav {
  display: flex;
  gap: 1.1rem;
  flex-wrap: wrap;
}

.nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
}

.nav a:hover { color: var(--accent); }

.disclosure {
  background: var(--warn-bg);
  color: var(--warn);
  font-size: 0.88rem;
  border-bottom: 1px solid #f0e0b0;
  padding: 0.55rem 0;
}

.disclosure .wrap { width: min(100% - 2rem, 960px); }

main { padding: 1.75rem 0 3rem; }

.hero {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.5rem 1.35rem;
  margin-bottom: 1.5rem;
}

.hero h1 {
  margin: 0 0 0.5rem;
  font-size: clamp(1.55rem, 4vw, 2rem);
  line-height: 1.25;
  letter-spacing: -0.02em;
}

.hero .lede {
  margin: 0;
  color: var(--muted);
  font-size: 1.05rem;
}

.quick-answer {
  background: var(--accent-soft);
  border: 1px solid #c5e4d6;
  border-radius: var(--radius);
  padding: 1.15rem 1.25rem;
  margin: 1.25rem 0;
}

.quick-answer h2 {
  margin: 0 0 0.5rem;
  font-size: 1.1rem;
  color: var(--accent);
}

.quick-answer p { margin: 0.35rem 0; }

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: 1rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  padding: 0.7rem 1.1rem;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:hover {
  background: var(--accent-hover);
  color: #fff;
}

.btn-secondary {
  background: var(--surface);
  color: var(--ink);
  border-color: var(--border);
}

.btn-secondary:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.note {
  font-size: 0.82rem;
  color: var(--muted);
  margin-top: 0.55rem;
}

section {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.25rem 1.35rem;
  margin-bottom: 1.15rem;
}

section h2 {
  margin: 0 0 0.75rem;
  font-size: 1.25rem;
  letter-spacing: -0.015em;
}

section h3 {
  margin: 1rem 0 0.4rem;
  font-size: 1.05rem;
}

p { margin: 0.55rem 0; }

ul, ol { padding-left: 1.25rem; margin: 0.5rem 0; }
li { margin: 0.3rem 0; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
  margin: 0.75rem 0;
}

th, td {
  text-align: left;
  padding: 0.55rem 0.6rem;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

th {
  background: var(--bg);
  font-weight: 600;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--muted);
}

.cards {
  display: grid;
  gap: 0.85rem;
  grid-template-columns: 1fr;
}

@media (min-width: 560px) {
  .cards { grid-template-columns: 1fr 1fr; }
}

.card {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem;
  background: var(--bg);
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.card h3 { margin: 0; font-size: 1.05rem; }
.card .tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 0.15rem 0.45rem;
  border-radius: 4px;
  width: fit-content;
}

.card p { margin: 0; font-size: 0.95rem; color: var(--muted); flex: 1; }

.card .card-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.35rem;
}

.card .card-links a {
  font-size: 0.88rem;
  font-weight: 600;
  text-decoration: none;
}

.size-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: 0.55rem;
  margin-top: 0.75rem;
}

.size-grid a {
  display: block;
  text-align: center;
  padding: 0.75rem 0.5rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  text-decoration: none;
  color: var(--ink);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.size-grid a:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-soft);
}

.size-grid a.live { border-color: var(--accent); background: var(--accent-soft); }
.size-grid a.soon {
  opacity: 0.55;
  pointer-events: none;
  font-weight: 500;
  font-size: 0.9rem;
}

.faq details {
  border-bottom: 1px solid var(--border);
  padding: 0.7rem 0;
}

.faq details:last-child { border-bottom: none; }

.faq summary {
  font-weight: 600;
  cursor: pointer;
  list-style: none;
}

.faq summary::-webkit-details-marker { display: none; }
.faq summary::before {
  content: "+";
  display: inline-block;
  width: 1.2em;
  color: var(--accent);
  font-weight: 700;
}

.faq details[open] summary::before { content: "−"; }

.faq details p { margin: 0.45rem 0 0.2rem 1.2em; color: var(--muted); }

.next-sizes {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.next-sizes a {
  padding: 0.45rem 0.8rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 999px;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--ink);
}

.next-sizes a:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.cite {
  font-size: 0.85rem;
  color: var(--muted);
}

.cite a { word-break: break-word; }

.site-footer {
  border-top: 1px solid var(--border);
  background: var(--surface);
  padding: 1.5rem 0 2rem;
  font-size: 0.9rem;
  color: var(--muted);
}

.site-footer .wrap { width: min(100% - 2rem, 960px); }

.site-footer a { color: var(--muted); }
.site-footer a:hover { color: var(--accent); }

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 0.75rem;
}

.breadcrumbs {
  font-size: 0.88rem;
  color: var(--muted);
  margin-bottom: 1rem;
}

.breadcrumbs a { color: var(--muted); text-decoration: none; }
.breadcrumbs a:hover { color: var(--accent); }

.callout {
  background: var(--warn-bg);
  border-left: 3px solid #d4a017;
  padding: 0.75rem 1rem;
  margin: 0.85rem 0;
  border-radius: 0 6px 6px 0;
  font-size: 0.95rem;
}

.placeholder-badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  background: #eee;
  color: #666;
  padding: 0.1rem 0.35rem;
  border-radius: 3px;
  margin-left: 0.25rem;
  vertical-align: middle;
}