:root {
  --navy: #0f172a;
  --red: #dc2626;
  --green: #16a34a;
  --blue: #2563eb;
  --paper: #f8fafc;
  --ink: #0f172a;
  --muted: #475569;
  --line: #e2e8f0;
}
* { box-sizing: border-box; }
html { font-size: 100%; }
body {
  margin: 0;
  font-family: "Atkinson Hyperlegible", "Segoe UI", sans-serif;
  background: var(--paper);
  color: var(--ink);
  font-size: 1.25rem;
  line-height: 1.55;
}
a { color: inherit; }
img { max-width: 100%; }
.shell { width: min(72rem, calc(100% - 2rem)); margin-inline: auto; }
.topbar { background: var(--navy); color: #fff; }
.topbar .shell, .bar .shell { display: flex; align-items: center; justify-content: space-between; gap: 0.75rem; }
.topbar .shell { min-height: 3.5rem; }
.pill { display: inline-flex; align-items: center; min-height: 2.75rem; padding: 0 1rem; border-radius: 999px; font-weight: 700; text-decoration: none; }
.pill.red { background: var(--red); color: #fff; }
.pill.green { background: var(--green); color: #fff; }
.fontbox { display: flex; align-items: center; background: rgba(255,255,255,.15); border-radius: 0.75rem; }
.fontbox button { min-width: 2.75rem; min-height: 2.75rem; border: 0; background: transparent; color: #fff; font: inherit; font-weight: 700; cursor: pointer; }
.bar { background: #fff; position: sticky; top: 0; z-index: 20; box-shadow: 0 1px 8px rgba(15,23,42,.08); }
.brand { display: flex; align-items: center; gap: 0.75rem; text-decoration: none; padding: 0.75rem 0; }
.mark { width: 2.75rem; height: 2.75rem; }
.brand strong { display: block; letter-spacing: -0.02em; }
.brand span { display: block; color: var(--muted); font-size: 1.05rem; }
.nav { display: none; gap: 0.25rem; align-items: center; }
.nav a { text-decoration: none; font-weight: 700; min-height: 3rem; display: inline-flex; align-items: center; padding: 0 0.55rem; border-radius: 0.75rem; }
.nav a[aria-current="page"] { background: var(--navy); color: #fff; }
.desk-actions { display: none; gap: 0.5rem; }
.btn { display: inline-flex; align-items: center; justify-content: center; min-height: 3.5rem; padding: 0.6rem 1rem; border-radius: 1rem; font: inherit; font-weight: 700; text-decoration: none; border: 0; cursor: pointer; }
.btn.red { background: var(--red); color: #fff; }
.btn.green { background: var(--green); color: #fff; }
.btn.navy { background: var(--navy); color: #fff; }
.btn.white { background: #fff; color: var(--navy); }
.btn.block { width: 100%; }
.menu-btn { min-height: 3.5rem; border: 0; border-radius: 0.85rem; background: var(--navy); color: #fff; font: inherit; font-weight: 700; padding: 0 1rem; cursor: pointer; }
.overlay { display: none; position: fixed; inset: 0; background: var(--paper); z-index: 40; padding: 1rem; }
.overlay.open { display: block; }
.overlay a { display: flex; min-height: 3.75rem; align-items: center; font-size: 1.5rem; font-weight: 700; text-decoration: none; border-bottom: 1px solid var(--line); }
h1 { font-size: clamp(2rem, 4vw, 3.2rem); line-height: 1.15; margin: 0.4rem 0; }
h2 { font-size: 1.8rem; margin: 0 0 0.6rem; }
.hero { padding: 1.5rem 0 1rem; }
.grid-2 { display: grid; gap: 1.25rem; }
.card { background: #fff; border-radius: 1.25rem; padding: 1.25rem; box-shadow: 0 10px 30px rgba(15,23,42,.06); }
.navy-card { background: var(--navy); color: #fff; border-radius: 1.25rem; padding: 1.25rem; }
.badge { display: inline-flex; align-items: center; gap: 0.4rem; background: var(--red); color: #fff; border-radius: 999px; padding: 0.35rem 0.8rem; font-weight: 700; }
.dot { width: 0.7rem; height: 0.7rem; border-radius: 50%; background: #fff; }
.muted { color: var(--muted); }
.actions { display: flex; flex-direction: column; gap: 0.75rem; margin-top: 1rem; }
.gates { display: grid; gap: 0.8rem; padding-bottom: 1.5rem; }
.gate { min-height: 7rem; border-radius: 1.25rem; padding: 1rem 1.15rem; text-decoration: none; display: flex; flex-direction: column; justify-content: space-between; box-shadow: 0 10px 30px rgba(15,23,42,.06); }
.gate.dark { background: var(--navy); color: #fff; }
.gate.light { background: #fff; }
.section { padding: 1.5rem 0; }
.cards { display: grid; gap: 0.8rem; }
.note { background: #fef3c7; color: #78350f; border-radius: 1rem; padding: 1rem; font-weight: 700; }
.size-pills { display: flex; justify-content: center; gap: 0.35rem; font-size: 2rem; font-weight: 700; flex-wrap: wrap; }
.size-pills span { background: var(--blue); border-radius: 0.5rem; padding: 0 0.35rem; }
.three { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0.5rem; text-align: center; margin-top: 0.8rem; }
.three div { background: rgba(255,255,255,.1); border-radius: 0.75rem; padding: 0.4rem; }
.tabs, .toggle, .chips { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.tab, .chip, .toggle button { min-height: 3.25rem; border-radius: 0.9rem; border: 0; font: inherit; font-weight: 700; padding: 0.4rem 0.8rem; cursor: pointer; background: #fff; }
.tab[aria-pressed="true"], .toggle button[aria-pressed="true"], .chip[aria-pressed="true"] { background: var(--navy); color: #fff; }
label { display: grid; gap: 0.35rem; font-weight: 700; }
select, input, textarea { min-height: 3.5rem; border-radius: 0.9rem; border: 2px solid #cbd5e1; padding: 0.4rem 0.7rem; font: inherit; background: #fff; }
textarea { min-height: 7rem; }
.form-grid { display: grid; gap: 0.8rem; }
.list { display: grid; gap: 0.8rem; }
.tire { background: #fff; border-radius: 1.25rem; padding: 1rem; box-shadow: 0 8px 24px rgba(15,23,42,.06); }
.steps { display: grid; gap: 0.8rem; }
.step-no { width: 2.5rem; height: 2.5rem; border-radius: 50%; background: var(--navy); color: #fff; display: inline-flex; align-items: center; justify-content: center; font-weight: 700; }
.band { background: var(--navy); color: #fff; padding: 1.5rem 0; }
footer { background: var(--navy); color: #fff; padding: 2rem 0 1rem; }
footer a { color: #e2e8f0; }
.foot { display: grid; gap: 1.2rem; }
.sticky { position: fixed; left: 0; right: 0; bottom: 0; background: #fff; display: grid; grid-template-columns: 1fr 1fr; gap: 0.5rem; padding: 0.6rem 0.8rem calc(0.6rem + env(safe-area-inset-bottom)); box-shadow: 0 -8px 24px rgba(15,23,42,.12); z-index: 30; }
main { padding-bottom: 6.5rem; }
iframe { width: 100%; height: 18rem; border: 0; border-radius: 1rem; }
details { background: #fff; border-radius: 1rem; padding: 0.8rem 1rem; }
summary { font-weight: 700; cursor: pointer; min-height: 2.5rem; }
.hidden { display: none; }
@media (min-width: 800px) {
  .menu-btn, .sticky { display: none; }
  main { padding-bottom: 0; }
  .nav, .desk-actions { display: flex; }
  .grid-2, .gates, .cards.two, .steps, .foot { grid-template-columns: 1fr 1fr; }
  .gates.three, .cards.three, .steps.three { grid-template-columns: 1fr 1fr 1fr; }
  .cards.four, .foot.four { grid-template-columns: repeat(4, 1fr); }
  .actions { flex-direction: row; }
  .form-grid.three { grid-template-columns: 1fr 1fr 1fr; }
  .hero { padding-top: 2rem; }
}
.sm-only { display: none; }
@media (max-width: 799px) {
  .desk-only { display: none; }
  .sm-only { display: inline; }
}