:root {
    --bg: #07070c; --surface: #0e0e17; --border: rgba(255,255,255,.08); --border-strong: rgba(255,255,255,.16);
    --text: #f4f4f8; --muted: #a3a3b8; --subtle: #74748a;
    --rainbow: linear-gradient(90deg, #ff3d6e, #ffb800, #3ddc84, #00c8ff, #7c5cff, #ff3dce);
    --font-display: 'Space Grotesk', system-ui, sans-serif;
    --font-body: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: var(--font-body); font-size: 16px; line-height: 1.7; color: var(--text); background: var(--bg); -webkit-font-smoothing: antialiased; }
a { color: #00c8ff; }
:focus-visible { outline: 2px solid #00c8ff; outline-offset: 3px; border-radius: 6px; }
.container { max-width: 820px; margin: 0 auto; padding: 0 24px; }
header { border-bottom: 1px solid var(--border); }
.nav { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.logo { display: inline-flex; align-items: center; gap: 8px; color: var(--text); text-decoration: none; font: 700 19px/1 var(--font-display); letter-spacing: .04em; }
.logo-box { position: relative; padding: 4px 7px; }
.logo-box::before { content: ''; position: absolute; inset: 0; border-radius: 4px; padding: 1.5px; background: var(--rainbow);
    -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0); -webkit-mask-composite: xor; mask-composite: exclude; }
.gradient-text { background: var(--rainbow); -webkit-background-clip: text; background-clip: text; color: transparent; }
.back { color: var(--muted); text-decoration: none; font-size: 15px; display: inline-flex; align-items: center; min-height: 44px; }
.back:hover { color: var(--text); }
main { padding: 64px 0 40px; }
h1 { font: 700 clamp(2rem, 5vw, 2.8rem)/1.1 var(--font-display); letter-spacing: -.03em; margin-bottom: 10px; }
.updated { color: var(--subtle); font-size: 14px; margin-bottom: 40px; }
h2 { font: 600 1.3rem/1.3 var(--font-display); margin: 40px 0 12px; }
p, li { color: var(--muted); }
p + p { margin-top: 12px; }
ul { padding-left: 22px; margin-top: 10px; display: grid; gap: 6px; }
strong { color: var(--text); font-weight: 600; }
.card { background: var(--surface); border: 1px solid var(--border-strong); border-radius: 16px; padding: 24px 28px; margin: 24px 0; }
.card dl { display: grid; grid-template-columns: 120px 1fr; gap: 10px 16px; }
.card dt { color: var(--subtle); font-size: 14px; }
.card dd { color: var(--text); }
footer { border-top: 1px solid var(--border); margin-top: 64px; padding: 32px 0 40px; color: var(--subtle); font-size: 14px; }
.footer-links { display: flex; flex-wrap: wrap; gap: 8px 20px; margin-bottom: 14px; }
.footer-links a { color: var(--muted); text-decoration: none; }
.footer-links a:hover { color: var(--text); }
@media (max-width: 600px) { .card dl { grid-template-columns: 1fr; gap: 2px; } .card dd { margin-bottom: 10px; } }