:root { --bg: #0b0d12; --fg: #f2f4f8; --dim: #9aa3b2; --line: #232836; --accent: #ff2d55; }
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 16px/1.7 -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
  background-image: radial-gradient(circle at 1px 1px, #1c2130 1px, transparent 0); background-size: 24px 24px; }
a { color: var(--fg); }
.bar { display: flex; align-items: center; gap: 10px; padding: 18px 16px; border-bottom: 1px solid var(--line); }
.bar nav { margin-left: auto; display: flex; gap: 18px; font-size: 14px; }
.bar nav a { color: var(--dim); text-decoration: none; }
.mark { width: 12px; height: 12px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 12px var(--accent); }
.wrap { max-width: 960px; margin: 0 auto; padding: 0 16px; }
.hero { padding: 96px 0 56px; }
.tag { color: var(--accent); font: 12px/1 ui-monospace, Consolas, monospace; letter-spacing: .2em; }
h1 { font-size: clamp(34px, 7vw, 60px); line-height: 1.15; margin: 16px 0; }
.hl { color: var(--accent); }
.lead { color: var(--dim); max-width: 640px; font-size: 18px; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; padding-bottom: 96px; }
.card { border: 1px solid var(--line); background: #10131b; padding: 24px; }
.card i { font: 12px ui-monospace, Consolas, monospace; color: var(--accent); font-style: normal; }
.card h3 { margin: 8px 0; }
.card p { color: var(--dim); margin: 0; font-size: 15px; }
.doc { max-width: 760px; margin: 0 auto; padding: 56px 16px 96px; }
.doc h1 { font-size: 32px; }
.doc h2 { margin-top: 36px; font-size: 20px; }
.doc p, .doc li { color: #c9cfda; }
.foot { border-top: 1px solid var(--line); padding: 24px 16px; text-align: center; color: var(--dim); font-size: 13px; }
.foot a { color: var(--dim); }
.code { font: 15px ui-monospace, Consolas, monospace; word-break: break-all; background: #10131b; border: 1px solid var(--line); padding: 16px; margin: 16px 0; }
button { background: var(--accent); color: #fff; border: 0; padding: 12px 22px; font-size: 16px; cursor: pointer; }