:root {
  --bg: #050505;
  --bg-2: #0a0a0a;
  --line: #1f1f1f;
  --line-2: #2a2a2a;
  --text: #f2f2f2;
  --muted: #9a9a9a;
  --primary: #1EE8A0;
  --primary-dark: #0d9b68;
  --primary-ink: #04140d;
  --font: "Geist", "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body { background: var(--bg); color: var(--text); font-family: var(--font); line-height: 1.7; -webkit-font-smoothing: antialiased; }
a { color: var(--primary); }
.container { width: min(820px, 100% - 32px); margin-inline: auto; }

.header { border-bottom: 1px solid var(--line); background: rgba(5, 5, 5, .85); position: sticky; top: 0; backdrop-filter: blur(12px); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 68px; gap: 16px; }
.brand { display: flex; align-items: center; gap: 12px; font-weight: 700; color: var(--text); text-decoration: none; }
.brand-mark {
  width: 36px; height: 36px; border-radius: 10px; display: grid; place-items: center;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark)); color: var(--primary-ink);
  font-weight: 800; font-size: 14px;
}
.back { color: var(--muted); text-decoration: none; font-size: 14px; }
.back:hover { color: var(--text); }

main { padding: 56px 0 72px; }
h1 { font-size: clamp(32px, 5vw, 46px); line-height: 1.1; letter-spacing: -.03em; font-weight: 800; }
.updated { color: var(--muted); font-size: 14px; margin: 10px 0 36px; }
h2 { font-size: 21px; letter-spacing: -.01em; margin: 36px 0 10px; }
p, li { color: #cfcfcf; font-size: 16px; }
p + p { margin-top: 12px; }
ul { padding-left: 22px; display: grid; gap: 6px; margin-top: 10px; }
.box { margin-top: 28px; padding: 22px; border: 1px solid var(--line-2); border-radius: 16px; background: var(--bg-2); }
.box p { font-size: 15px; }

.footer { border-top: 1px solid var(--line); padding: 28px 0; color: #6f6f6f; font-size: 13px; }
.footer .container { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.footer nav { display: flex; gap: 18px; flex-wrap: wrap; }
.footer nav a { color: #bdbdbd; text-decoration: none; }
.footer nav a:hover, .footer nav a[aria-current] { color: var(--primary); }