:root{--ink:#0f172a;--ink2:#475569;--ink3:#94a3b8;--pink:#db2777;--grad:linear-gradient(135deg,#ec4899,#9333ea)}
*{box-sizing:border-box}body{margin:0;font-family:Inter,system-ui,-apple-system,"Segoe UI",sans-serif;color:var(--ink);background:#f7f8fb;line-height:1.65;font-size:15px}
.top{background:#fff;border-bottom:1px solid #eef1f6}.top-in{max-width:860px;margin:0 auto;padding:16px 20px;display:flex;align-items:center;justify-content:space-between}
.brand{font-weight:800;font-size:18px;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;text-decoration:none}
.top a.back{color:var(--ink2);text-decoration:none;font-size:14px}
main{max-width:860px;margin:0 auto;padding:32px 20px 64px}
.doc{background:#fff;border:1px solid #eef1f6;border-radius:20px;padding:32px 36px}
h1{font-size:26px;line-height:1.25;margin:0 0 6px}.meta{color:var(--ink3);font-size:13px;margin:0 0 24px}
h2{font-size:18px;margin:28px 0 8px}p,li{color:#1e293b}ul,ol{padding-left:22px}li{margin:4px 0}
a{color:var(--pink)}mark{background:#fef08a;padding:0 3px;border-radius:3px}
.note{background:#fdf2f8;border-left:3px solid var(--pink);padding:12px 16px;border-radius:10px;font-size:14px;color:var(--ink2)}
.toc{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 8px}.toc a{font-size:13px;background:#f3f4f8;color:var(--ink2);padding:5px 10px;border-radius:20px;text-decoration:none}
@media(max-width:640px){.doc{padding:22px 18px;border-radius:16px}h1{font-size:22px}}