:root{--bg:#f5f7fb;--card:#fff;--ink:#212529;--soft:#475569;--dim:#94a3b8;--bd:#e2e8f0;--blue:#1565C0;--dark:#0D47A1;--accent:#FF6F00;--r:14px}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:'Segoe UI',system-ui,-apple-system,sans-serif;line-height:1.65;font-size:15.5px;-webkit-font-smoothing:antialiased}
a{color:var(--blue);text-decoration:none}a:hover{text-decoration:underline}
.gtop{position:sticky;top:0;z-index:50;background:linear-gradient(135deg,var(--blue),var(--dark));color:#fff}
.gtop-in{max-width:1240px;margin:0 auto;padding:0 22px;height:62px;display:flex;align-items:center;gap:14px;justify-content:space-between}
.gbrand{display:flex;align-items:center;gap:10px;font-weight:800;color:#fff;font-size:16px}.gbrand img{height:30px}.gbrand em{font-style:normal;font-weight:600;opacity:.85}
.gtop-links{display:flex;align-items:center;gap:12px;font-size:13.5px;font-weight:600}.gtop-links a{color:#fff;opacity:.92}
.gbtn,.gbtn-ghost{padding:8px 15px;border-radius:9px;font-weight:700;font-size:13.5px;cursor:pointer;border:1px solid rgba(255,255,255,.4);background:transparent;color:#fff;font-family:inherit}
.gbtn{background:var(--accent);border-color:var(--accent)}.gbtn-ghost:hover{background:rgba(255,255,255,.12);text-decoration:none}
.gburger{display:none;background:none;border:1px solid rgba(255,255,255,.5);color:#fff;border-radius:8px;font-size:18px;padding:4px 10px;cursor:pointer}
.gwrap{max-width:1240px;margin:0 auto;display:grid;grid-template-columns:266px 1fr;gap:30px;padding:0 22px}
.gside{position:sticky;top:62px;align-self:start;height:calc(100vh - 62px);overflow-y:auto;padding:24px 0}
.gside-h{font-size:11px;font-weight:800;letter-spacing:.1em;text-transform:uppercase;color:var(--dim);margin:0 12px 10px}
.gside-in{display:flex;flex-direction:column;gap:1px}
.gtoc-item{padding:7px 12px;border-radius:8px;color:var(--soft);font-size:13.6px;font-weight:500;border-left:2px solid transparent}
.gtoc-item:hover{background:#fff;color:var(--blue);text-decoration:none}
.gmain{min-width:0;padding:28px 0 60px}
.gcontent{background:var(--card);border:1px solid var(--bd);border-radius:18px;padding:38px 46px;box-shadow:0 18px 44px -30px rgba(13,71,161,.25)}
.gcontent h1{font-size:30px;color:var(--dark);margin:.1em 0 .5em;line-height:1.15}
.gcontent h2{font-size:21px;color:var(--blue);margin:1.7em 0 .5em;padding-top:.5em;border-top:1px solid var(--bd);scroll-margin-top:74px}
.gcontent h2:first-of-type{border-top:0;padding-top:0}
.gcontent h3{font-size:16.5px;margin:1.3em 0 .4em}
.gcontent img{display:block;max-width:100%;border:1px solid var(--bd);border-radius:12px;margin:14px 0 22px;box-shadow:0 14px 34px -22px rgba(13,71,161,.4)}
.gcontent blockquote{margin:14px 0;padding:13px 18px;background:#fff7ed;border-left:4px solid var(--accent);border-radius:0 10px 10px 0;color:#7c4a03}
.gcontent table{width:100%;border-collapse:collapse;margin:16px 0;font-size:14px}
.gcontent th,.gcontent td{border:1px solid var(--bd);padding:9px 12px;text-align:left}.gcontent th{background:#e8f0fb;color:var(--dark);font-weight:700}
.gcontent code{background:#eef2f9;border:1px solid var(--bd);border-radius:6px;padding:1px 6px;font-size:.9em}
.gcontent kbd{background:var(--dark);color:#fff;border-radius:5px;padding:1px 7px;font-size:.85em;font-weight:700}
.gcontent ul,.gcontent ol{padding-left:22px}.gcontent li{margin:.3em 0}
.gfoot{margin-top:24px;padding:18px 4px;color:var(--dim);font-size:13px}
@media(max-width:900px){.gwrap{grid-template-columns:1fr}.gside{position:fixed;top:62px;left:0;width:270px;background:var(--bg);border-right:1px solid var(--bd);transform:translateX(-100%);transition:.2s;z-index:40;padding:16px}body.navopen .gside{transform:none}.gburger{display:block}.gtop-links a:not(.gbtn),.gtop-links button{display:none}.gcontent{padding:24px 20px}}
@media print{.gtop,.gside,.gburger{display:none}.gwrap{display:block;padding:0}.gcontent{border:0;box-shadow:none;padding:0}}