:root{--bg:#0f1020;--surface:#1a1b2e;--ink:#e8e8f5;--muted:#9a9ab8;--blue:#3b82f6;--blue-soft:#1e2a4a;--violet:#8b5cf6;--violet-soft:#2a1f47;--pink:#ec4899;--border:#2a2b45;--shadow:0 8px 28px #3b82f61f;--round:16px;--sans:"Sora", "Inter", -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif}[data-theme=light]{--bg:#f8f9fa;--surface:#fff;--ink:#1a1a2e;--muted:#64748b;--blue:#3b82f6;--blue-soft:#dbeafe;--violet:#8b5cf6;--violet-soft:#ede9fe;--pink:#ec4899;--border:#e2e8f0;--shadow:0 8px 28px #3b82f61a}*{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{font-family:var(--sans);background:var(--bg);color:var(--ink);-webkit-font-smoothing:antialiased;font-size:16px;line-height:1.75}a{color:var(--blue);text-decoration:none}a:hover{text-decoration:underline}.bar{background:var(--surface);border-bottom:1px solid var(--border);z-index:10;padding:14px 20px;position:sticky;top:0}.bar .inner{justify-content:space-between;align-items:center;max-width:920px;margin:0 auto;display:flex}.bar .logo{background:linear-gradient(90deg, var(--blue), var(--violet), var(--pink));-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text;font-size:17px;font-weight:800}.bar nav{gap:18px;display:flex}.bar nav a{color:var(--muted);font-size:14px;font-weight:600}.bar nav a:hover{color:var(--blue);text-decoration:none}.wrap{max-width:920px;margin:0 auto;padding:0 20px 60px}.cover{color:#fff;box-shadow:var(--shadow);background:linear-gradient(135deg,#1e3a8a 0%,#6d28d9 55%,#be185d 120%);border-radius:22px;margin:28px 0 32px;padding:48px 36px}.cover .pill{letter-spacing:.5px;background:#ffffff2e;border-radius:999px;margin-bottom:14px;padding:5px 14px;font-size:12.5px;font-weight:700;display:inline-block}.cover h1{margin-bottom:10px;font-size:38px;font-weight:800;line-height:1.15}.cover p{opacity:.92;max-width:560px;font-size:16px}.stats{grid-template-columns:repeat(3,1fr);gap:14px;margin:24px 0;display:grid}.stat{background:var(--surface);border:1px solid var(--border);border-radius:var(--round);text-align:center;box-shadow:var(--shadow);padding:18px}.stat .n{color:var(--blue);font-size:26px;font-weight:800}.stat .l{color:var(--muted);margin-top:2px;font-size:13px}.sec{background:var(--surface);border:1px solid var(--border);border-radius:var(--round);box-shadow:var(--shadow);margin:18px 0;padding:26px 28px}.sec h2{color:var(--ink);margin-bottom:10px;font-size:22px;font-weight:800}.sec h3{color:var(--violet);margin:16px 0 6px;font-size:16px;font-weight:700}.sec p{margin:10px 0}.sec ul,.sec ol{margin:10px 0 10px 22px}.sec li{margin:7px 0}.tag-row{flex-wrap:wrap;gap:8px;margin:14px 0;display:flex}.tag{background:var(--blue-soft);color:var(--blue);border-radius:999px;padding:5px 12px;font-size:12.5px;font-weight:700}.callout{background:var(--violet-soft);border-left:4px solid var(--violet);border-radius:10px;margin:18px 0;padding:14px 18px;font-size:14.5px}.callout strong{color:var(--violet)}footer{text-align:center;color:var(--muted);padding:30px 20px 50px;font-size:13px}@media (max-width:600px){.cover h1{font-size:28px}.stats{grid-template-columns:1fr}}