:root{--navy:#0f1f35;--ink:#172033;--muted:#64748b;--line:#e2e8f0;--soft:#f7f9fc;--code:#111827;--accent:#4058cf;--success:#087454}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:82px}body{margin:0;color:var(--ink);font:15px/1.68 Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif;background:#fff}::selection{background:#dce5ff;color:#111d34}.topbar{height:64px;position:sticky;top:0;z-index:20;display:flex;align-items:center;gap:24px;padding:0 28px;background:var(--navy);color:#fff;box-shadow:0 6px 18px rgba(15,31,53,.18)}.brand{min-width:240px;color:#fff;text-decoration:none;font-size:20px;font-weight:800;letter-spacing:-.02em}.brand span{display:inline-grid;place-items:center;width:30px;height:30px;margin-right:7px;border-radius:8px;background:#526df1}.brand b{font-weight:500;color:#afbdd1}.search{margin-left:auto;width:min(460px,45vw);display:flex;align-items:center;gap:10px;padding:7px 11px;border:1px solid rgba(255,255,255,.22);border-radius:8px;background:rgba(255,255,255,.08)}.search-label{color:#afbdd1;font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.05em}.search input{width:100%;border:0;outline:0;background:transparent;color:#fff;font:inherit}.search input::placeholder{color:#b9c5d8}.menu{display:none;min-height:34px;padding:6px 10px;border:1px solid rgba(255,255,255,.28);border-radius:7px;color:#fff;background:transparent;font:700 12px/1 inherit}.layout{display:grid;grid-template-columns:292px minmax(0,1fr);min-height:calc(100vh - 64px)}.sidebar{position:sticky;top:64px;height:calc(100vh - 64px);overflow:auto;padding:25px 20px 40px;border-right:1px solid var(--line);background:var(--soft)}.sidebar h2{margin:23px 11px 7px;color:#75839a;font-size:11px;letter-spacing:.08em;text-transform:uppercase}.sidebar h2:first-child{margin-top:0}.sidebar a{display:block;padding:7px 11px;border-radius:6px;color:#46546a;text-decoration:none;font-size:13.5px}.sidebar a:hover{background:#e9eef8;color:#233452}.sidebar a.active{background:#e0e7ff;color:#2e45b1;font-weight:750}.search-empty{margin:20px 11px;color:var(--muted);font-size:13px}.version{margin:30px 11px;color:#8996aa;font-size:11px}.content{width:min(100%,1260px);padding:34px 52px 50px}.crumb{display:flex;gap:8px;color:#8a97aa;font-size:13px}.crumb a{color:#5c6a7f;text-decoration:none}.article-layout{display:grid;grid-template-columns:minmax(0,860px) 190px;gap:48px;align-items:start}article{max-width:860px}h1{margin:18px 0 8px;color:#0f172a;font-size:38px;line-height:1.18;letter-spacing:-.025em}h2{margin:40px 0 12px;padding-top:5px;color:#15233a;font-size:24px;line-height:1.3;letter-spacing:-.015em}h3{margin:27px 0 8px;color:#24344f;font-size:18px}.lead{max-width:70ch;margin:0 0 28px;color:var(--muted);font-size:17px}p,li{max-width:75ch}a{color:#354fc4;text-underline-offset:3px}a:hover{color:#203899}code{padding:2px 5px;border-radius:4px;background:#eef2f7;color:#a71959;font:13px/1.5 ui-monospace,SFMono-Regular,Menlo,monospace}pre{position:relative;overflow:auto;margin:16px 0 22px;padding:20px 68px 20px 20px;border-radius:10px;background:var(--code);color:#e5edf8;font:13px/1.55 ui-monospace,SFMono-Regular,Menlo,monospace}pre code{padding:0;background:transparent;color:inherit}.copy-code{position:absolute;top:10px;right:10px;padding:5px 8px;border:1px solid #526078;border-radius:6px;background:#263247;color:#eef4ff;font:700 11px/1.2 Inter,ui-sans-serif,system-ui;cursor:pointer}.copy-code:hover{background:#354258}.note,.warning,.danger,.success{margin:20px 0;padding:14px 16px;border:1px solid #c9d5f5;border-radius:8px;background:#eff4ff}.warning{border-color:#e8cc84;background:#fff8e8}.danger{border-color:#efb8bd;background:#fff0f1}.success{border-color:#a7d9c8;background:#edf9f5;color:#145f48}.note strong,.warning strong,.danger strong,.success strong{display:block;margin-bottom:3px}.tutorial-meta{display:flex;flex-wrap:wrap;gap:8px;margin:20px 0 28px}.tutorial-meta span{padding:5px 8px;border:1px solid #d6dfeb;border-radius:7px;background:#f8fafc;color:#516176;font-size:12px;font-weight:650}.checklist{list-style:none;padding:0}.checklist li{position:relative;padding-left:28px;margin:9px 0}.checklist li:before{content:"✓";position:absolute;left:0;top:1px;color:var(--success);font-weight:900}.on-this-page{position:sticky;top:88px;padding-top:22px}.on-this-page strong{display:block;margin-bottom:9px;color:#526176;font-size:11px;letter-spacing:.06em;text-transform:uppercase}.on-this-page a{display:block;padding:5px 0;color:#68778c;text-decoration:none;font-size:12px;line-height:1.4}.on-this-page a:hover{color:#2f47bd}table{width:100%;border-collapse:collapse;margin:14px 0 25px;font-size:14px}th,td{padding:10px 12px;border:1px solid var(--line);text-align:left;vertical-align:top}th{background:#f5f7fb;color:#344258}ul,ol{padding-left:22px}li{margin:5px 0}.steps{counter-reset:step;list-style:none;padding:0}.steps>li{position:relative;margin:18px 0;padding-left:42px}.steps>li:before{counter-increment:step;content:counter(step);position:absolute;left:0;top:0;display:grid;place-items:center;width:27px;height:27px;border-radius:50%;background:#e3e9ff;color:#3450c5;font-weight:800}footer{display:flex;justify-content:space-between;margin-top:55px;padding-top:20px;border-top:1px solid var(--line);color:#8996aa;font-size:12px}:focus-visible{outline:3px solid rgba(64,88,207,.32);outline-offset:2px}@media(max-width:1080px){.article-layout{grid-template-columns:minmax(0,1fr)}.on-this-page{display:none}.content{padding-right:34px}}@media(max-width:820px){.topbar{padding:0 14px;gap:10px}.brand{min-width:auto}.brand b,.search-label{display:none}.menu{display:block;order:-1}.search{width:auto;flex:1}.layout{display:block}.sidebar{display:none;position:fixed;z-index:19;inset:64px 0 0;height:auto}.sidebar.open{display:block}.content{padding:25px 20px}h1{font-size:31px}table{display:block;overflow-x:auto}pre{padding-right:20px;padding-top:48px}}