:root{--bg:#f4f6fb;--card:#fff;--ink:#0f172a;--soft:#475569;--dim:#94a3b8;--bd:rgba(15,23,42,.09);--violet:#7c3aed;--teal:#0d9488;--grad:linear-gradient(135deg,#7c3aed,#6366f1 48%,#0d9488);--r:14px}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:Inter,Segoe UI,system-ui,-apple-system,sans-serif;line-height:1.65;font-size:15.5px;-webkit-font-smoothing:antialiased}
a{color:var(--violet);text-decoration:none}a:hover{text-decoration:underline}
.dtop{position:sticky;top:0;z-index:50;background:rgba(244,246,251,.85);backdrop-filter:blur(14px);border-bottom:1px solid var(--bd)}
.dtop-in{max-width:1240px;margin:0 auto;padding:0 22px;height:62px;display:flex;align-items:center;gap:18px;justify-content:space-between}
.dbrand{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--ink);font-size:16px}
.dbrand img{width:30px;height:30px;border-radius:8px}.dbrand em{font-style:normal;color:var(--violet);font-weight:700}
.dtop-links{display:flex;align-items:center;gap:18px;font-size:14px;font-weight:500}
.dtop-links a{color:var(--soft)}.dtop-cta{background:var(--grad);color:#fff!important;padding:8px 16px;border-radius:10px;font-weight:700}
.dburger{display:none;background:none;border:1px solid var(--bd);border-radius:8px;font-size:18px;padding:4px 10px;cursor:pointer}
.dwrap{max-width:1240px;margin:0 auto;display:grid;grid-template-columns:286px 1fr;gap:28px;padding:0 22px}
.dside{position:sticky;top:62px;align-self:start;height:calc(100vh - 62px);overflow-y:auto;padding:22px 0}
.dside-in{display:flex;flex-direction:column;gap:2px}
.dnav-home,.dnav-item{display:flex;align-items:center;gap:10px;padding:9px 12px;border-radius:9px;color:var(--soft);font-size:13.8px;font-weight:500}
.dnav-home{font-weight:700;color:var(--ink);margin-bottom:6px}
.dnav-item:hover,.dnav-home:hover{background:#fff;text-decoration:none;color:var(--ink)}
.dnav-item.active,.dnav-home.active{background:color-mix(in oklab,var(--violet) 12%,transparent);color:var(--violet);font-weight:700}
.dnav-num{font-size:11px;font-weight:800;color:var(--dim);min-width:20px}
.dnav-item.active .dnav-num{color:var(--violet)}
.dmain{min-width:0;padding:30px 0 60px}
.dcontent{background:var(--card);border:1px solid var(--bd);border-radius:18px;padding:38px 44px;box-shadow:0 18px 44px -28px rgba(30,41,90,.18)}
.dcontent h1{font-size:30px;letter-spacing:-.02em;margin:.2em 0 .6em;line-height:1.15}
.dcontent h2{font-size:21px;margin:1.6em 0 .5em;padding-top:.4em;border-top:1px solid var(--bd);letter-spacing:-.01em}
.dcontent h2:first-of-type{border-top:0;padding-top:0}
.dcontent h3{font-size:16.5px;margin:1.4em 0 .4em;color:var(--violet)}
.dcontent p{margin:.7em 0;color:#1e293b}
.dcontent img{display:block;max-width:100%;border:1px solid var(--bd);border-radius:12px;margin:14px 0 22px;box-shadow:0 14px 34px -20px rgba(30,41,90,.3)}
.dcontent blockquote{margin:14px 0;padding:13px 18px;background:color-mix(in oklab,var(--teal) 8%,transparent);border-left:3px solid var(--teal);border-radius:0 10px 10px 0;color:var(--soft)}
.dcontent ul,.dcontent ol{padding-left:22px;margin:.6em 0}.dcontent li{margin:.3em 0}
.dcontent code{background:#eef0f7;border:1px solid var(--bd);border-radius:6px;padding:1px 6px;font-size:.88em;font-family:ui-monospace,Menlo,monospace}
.dcontent pre{background:#0f172a;color:#e2e8f0;padding:16px;border-radius:12px;overflow:auto}.dcontent pre code{background:none;border:0;color:inherit}
.dcontent table{width:100%;border-collapse:collapse;margin:16px 0;font-size:14px}
.dcontent th,.dcontent td{border:1px solid var(--bd);padding:9px 12px;text-align:left}
.dcontent th{background:color-mix(in oklab,var(--violet) 7%,transparent);font-weight:700}
.dcontent hr{border:0;border-top:1px solid var(--bd);margin:26px 0}
.dprevnext{display:flex;justify-content:space-between;gap:12px;margin-top:34px;padding-top:22px;border-top:1px solid var(--bd)}
.pn{padding:11px 18px;border:1px solid var(--bd);border-radius:11px;font-weight:650;font-size:14px;background:var(--bg)}
.pn:hover{border-color:var(--violet);text-decoration:none}
.dfoot{border-top:1px solid var(--bd);margin-top:30px;padding:22px 0;color:var(--dim);font-size:13px}
.dfoot .dtop-in{height:auto}.dfoot a{color:var(--soft)}
@media(max-width:900px){
 .dwrap{grid-template-columns:1fr}
 .dside{position:fixed;top:62px;left:0;width:280px;background:var(--bg);border-right:1px solid var(--bd);transform:translateX(-100%);transition:.2s;z-index:40;height:calc(100vh - 62px);padding:16px}
 body.navopen .dside{transform:none}
 .dburger{display:block}.dtop-links a:not(.dtop-cta){display:none}
 .dcontent{padding:24px 20px}
}