:root { color-scheme: dark; --bg: #0a0f0d; --panel: #101a16; --line: #294138; --ink: #edf4ef; --muted: #a8b8af; --accent: #7ee0a3; }
* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; background: radial-gradient(circle at 0 0, #163326 0, transparent 32rem), var(--bg); color: var(--ink); font: 16px/1.65 "Segoe UI", system-ui, sans-serif; }
main { width: min(900px, calc(100% - 40px)); margin: 0 auto; padding: 72px 0; }
.back, .eyebrow { color: var(--accent); font: 600 .78rem/1.4 ui-monospace, SFMono-Regular, Consolas, monospace; letter-spacing: .1em; text-transform: uppercase; }
.back { text-decoration: none; }
.eyebrow { margin: 56px 0 12px; }
h1, h2 { line-height: 1.08; letter-spacing: -.03em; }
h1 { max-width: 12ch; margin: 0; font-size: clamp(3rem, 9vw, 6rem); }
h2 { margin: 0 0 14px; font-size: 1.2rem; }
.lead { max-width: 62ch; margin: 28px 0 46px; color: var(--muted); font-size: 1.18rem; }
section { margin-top: 20px; padding: 26px; border: 1px solid var(--line); background: rgba(16, 26, 22, .92); }
.grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; background: transparent; border: 0; padding: 0; }
.grid article { padding: 26px; border: 1px solid var(--line); background: var(--panel); }
p, li { color: var(--muted); }
ul { margin: 0; padding-left: 20px; }
nav { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
nav a { padding: 11px 14px; border: 1px solid var(--accent); color: var(--accent); text-decoration: none; font-weight: 600; }
nav a:hover, nav a:focus-visible { background: var(--accent); color: #07110b; }
@media (max-width: 640px) { main { width: min(100% - 28px, 900px); padding: 40px 0; } .grid { grid-template-columns: 1fr; } h1 { font-size: clamp(2.8rem, 17vw, 4.5rem); } section, .grid article { padding: 20px; } }