:root {
  color-scheme: dark;
  --bg: #070b12;
  --panel: #0f1724;
  --panel-soft: #121d2c;
  --text: #f4f7fb;
  --muted: #a6b2c3;
  --line: #26364b;
  --accent: #65dccf;
  --accent-warm: #ffb657;
  --max: 780px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 12% 0%, rgba(101, 220, 207, .12), transparent 32rem),
    var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 17px;
  line-height: 1.7;
}

a { color: var(--accent); text-underline-offset: .18em; }
a:hover { color: #96f3e9; }

.shell { width: min(calc(100% - 2rem), var(--max)); margin: 0 auto; }

header {
  border-bottom: 1px solid var(--line);
  background: rgba(7, 11, 18, .84);
  backdrop-filter: blur(16px);
  position: sticky;
  top: 0;
  z-index: 2;
}

nav {
  min-height: 70px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  color: var(--text);
  text-decoration: none;
  font-weight: 760;
  letter-spacing: -.02em;
}

.brand-mark { color: var(--accent-warm); margin-right: .45rem; }

.nav-links { display: flex; gap: 1rem; font-size: .94rem; }
.nav-links a { color: var(--muted); text-decoration: none; }
.nav-links a[aria-current="page"], .nav-links a:hover { color: var(--text); }

main { padding: clamp(3rem, 8vw, 6.5rem) 0 5rem; }

.eyebrow {
  color: var(--accent);
  font-size: .8rem;
  font-weight: 800;
  letter-spacing: .16em;
  text-transform: uppercase;
}

h1, h2 { line-height: 1.15; letter-spacing: -.035em; }
h1 { margin: .55rem 0 1rem; font-size: clamp(2.4rem, 8vw, 4.6rem); max-width: 12ch; }
h2 { margin: 2.6rem 0 .7rem; font-size: clamp(1.35rem, 4vw, 1.8rem); }

.hero { display: flex; align-items: center; gap: 1.15rem; }
.hero h1 { margin-bottom: 0; }
.app-icon { width: clamp(4.5rem, 13vw, 6.5rem); height: auto; border-radius: 22%; box-shadow: 0 12px 32px rgba(101, 220, 207, .15); }
.lede { max-width: 62ch; color: var(--muted); font-size: 1.12rem; }
.updated { margin-top: 1.4rem; color: var(--muted); font-size: .9rem; }

.card {
  margin-top: 2rem;
  padding: clamp(1.2rem, 4vw, 2rem);
  border: 1px solid var(--line);
  border-radius: 18px;
  background: linear-gradient(145deg, rgba(18, 29, 44, .92), rgba(11, 17, 27, .92));
}

.card h2:first-child { margin-top: 0; }
p, li { color: #d8e0eb; }
li + li { margin-top: .45rem; }

.policy-index { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; margin-top: 2rem; }
.policy-index a { display: block; padding: 1.4rem; border: 1px solid var(--line); border-radius: 15px; background: var(--panel); text-decoration: none; }
.policy-index strong { display: block; color: var(--text); font-size: 1.1rem; }
.policy-index span { color: var(--muted); font-size: .94rem; }

.feature-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: .8rem; margin-top: 2rem; }
.feature-grid div { padding: 1rem; border: 1px solid var(--line); border-radius: 14px; background: rgba(15, 23, 36, .72); }
.feature-grid strong { display: block; color: var(--text); font-size: .96rem; }
.feature-grid span { display: block; margin-top: .35rem; color: var(--muted); font-size: .86rem; line-height: 1.5; }

footer { border-top: 1px solid var(--line); padding: 1.5rem 0 2.5rem; color: var(--muted); font-size: .88rem; }

code { color: var(--accent-warm); }

@media (max-width: 580px) {
  nav { align-items: flex-start; flex-direction: column; padding: 1rem 0; }
  .policy-index, .feature-grid { grid-template-columns: 1fr; }
  main { padding-top: 2.5rem; }
}