:root {
  color-scheme: dark;
  --ink: #eefcff;
  --muted: #a8c8cf;
  --navy: #061722;
  --panel: #0b2633;
  --line: #275160;
  --aqua: #45e0d2;
  --coral: #ff806f;
  --max: 1120px;
  font-family: ui-rounded, "SF Pro Rounded", "Avenir Next", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

html { background: var(--navy); color: var(--ink); scroll-behavior: smooth; }

body { margin: 0; min-width: 320px; background: radial-gradient(circle at 80% 0%, #124052 0, transparent 34rem), var(--navy); line-height: 1.65; }

a { color: var(--aqua); text-underline-offset: 0.18em; }

a:focus-visible { outline: 3px solid var(--coral); outline-offset: 4px; border-radius: 4px; }

.skip { position: absolute; left: 1rem; top: -5rem; z-index: 10; padding: 0.7rem 1rem; color: #071c2c; background: var(--aqua); font-weight: 800; }
.skip:focus { top: 1rem; }

.shell { width: min(calc(100% - 2.5rem), var(--max)); margin-inline: auto; }

header { padding-block: 1.2rem; }

nav, footer { display: flex; align-items: center; justify-content: space-between; gap: 1.2rem; }

nav a, footer a { font-weight: 700; text-decoration: none; }
.nav-links { display: flex; gap: 1.25rem; }
.brand { display: inline-flex; align-items: center; gap: 0.6rem; color: var(--ink); font-size: 1.2rem; }
.brand-mark { display: grid; place-items: center; width: 2rem; height: 2rem; border-radius: 50%; color: #04191d; background: var(--aqua); font-size: 1.5rem; font-weight: 900; }

.hero { min-height: 68vh; display: grid; align-content: center; padding-block: 5rem 6rem; }
.eyebrow { margin: 0 0 1rem; color: var(--aqua); font-size: 0.78rem; font-weight: 900; letter-spacing: 0.12em; text-transform: uppercase; }

h1, h2, h3 { margin-top: 0; line-height: 1.08; letter-spacing: -0.035em; }
h1 { max-width: 900px; margin-bottom: 1.5rem; font-size: clamp(3rem, 9vw, 6.8rem); }
h1 span { color: var(--aqua); }
h2 { max-width: 820px; font-size: clamp(2rem, 5vw, 4rem); }
h3 { font-size: 1.5rem; }
.lead { max-width: 760px; color: var(--muted); font-size: clamp(1.1rem, 2.3vw, 1.5rem); }

.trust-row { display: flex; flex-wrap: wrap; gap: 0.7rem; margin-top: 1.4rem; }
.trust-row span { padding: 0.55rem 0.85rem; border: 1px solid var(--line); border-radius: 999px; color: var(--ink); background: #08202a; font-size: 0.9rem; font-weight: 750; }
.availability { margin-top: 1.5rem; color: var(--muted); font-size: 0.9rem; }

.section { padding-block: 6rem; }
.card-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; margin-top: 3rem; }
.card { min-height: 280px; padding: 1.5rem; border: 1px solid var(--line); border-radius: 1.4rem; background: linear-gradient(150deg, #0d2b38, #081d28); }
.card p, .feature-list p, .boundary p, .policy p { color: var(--muted); }
.number { display: block; margin-bottom: 4rem; color: var(--coral); font-weight: 900; }

.contrast { padding-block: 6rem; color: #061722; background: var(--aqua); }
.contrast .eyebrow { color: #174f58; }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; }
.feature-list p { margin: 0; padding: 1.2rem 0; border-bottom: 1px solid #239b98; color: #0b3941; }

.boundary { padding-block: 7rem; }
.boundary p { max-width: 820px; font-size: 1.25rem; }

.policy { max-width: 820px; padding-block: 5rem 7rem; }
.policy h1 { font-size: clamp(3rem, 8vw, 5.5rem); }
.policy h2 { margin-top: 3rem; font-size: 1.75rem; }
.notice { margin-top: 2.5rem; padding: 1.25rem 1.4rem; border-left: 5px solid var(--coral); background: var(--panel); }

footer { flex-wrap: wrap; padding-block: 2rem 3rem; border-top: 1px solid var(--line); color: var(--muted); font-size: 0.9rem; }

@media (max-width: 850px) {
  .card-grid { grid-template-columns: repeat(2, 1fr); }
  .split { grid-template-columns: 1fr; gap: 2rem; }
}

@media (max-width: 560px) {
  .shell { width: min(calc(100% - 1.5rem), var(--max)); }
  nav { align-items: flex-start; }
  .nav-links { gap: 0.75rem; }
  .hero { min-height: auto; padding-block: 4rem; }
  .card-grid { grid-template-columns: 1fr; }
  .card { min-height: 230px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}