:root{--ink:#17212f;--muted:#546174;--line:#d8dee8;--paper:#f6f8fb;--surface:#fff;--soft:#e9f3ff;--brand:#1265d8;--brand2:#d14c2f;--accent:#f0b13a;letter-spacing:0}*{box-sizing:border-box}body{margin:0;background:linear-gradient(180deg,#fff 0,#f6f8fb 320px),var(--paper);color:var(--ink);font-family:Inter,"Segoe UI",Arial,sans-serif;font-size:16px;line-height:1.65}a{color:var(--brand);text-underline-offset:.18em}.topbar{position:sticky;top:0;z-index:10;background:rgba(255,255,255,.94);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}.topbar-inner{width:min(1360px,calc(100% - 32px));margin:0 auto;min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{display:inline-flex;align-items:center;gap:14px;color:var(--ink);text-decoration:none;min-width:250px}.brand img{width:58px;height:58px;object-fit:contain}.brand strong{display:block;font-size:17px;line-height:1.1}.brand small{display:block;color:var(--muted);font-size:12px;line-height:1.35}.nav{display:flex;align-items:center;gap:6px;flex-wrap:wrap;justify-content:flex-end}.nav a{color:var(--ink);text-decoration:none;padding:9px 11px;border-radius:6px;font-size:14px}.nav a:hover{background:#e8f1ff;color:var(--brand)}.menu-toggle{display:none;border:1px solid var(--line);background:#fff;color:var(--ink);border-radius:6px;width:42px;height:38px;font-size:22px;line-height:1;cursor:pointer}main{width:min(1360px,calc(100% - 32px));margin:0 auto;padding:34px 0 70px}.hero{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(300px,.8fr);gap:34px;align-items:end;padding:30px 0 28px;border-bottom:1px solid var(--line)}.page-head{padding:30px 0 26px;border-bottom:1px solid var(--line);margin-bottom:28px}.eyebrow{color:var(--brand);font-size:13px;font-weight:700;text-transform:uppercase;letter-spacing:.08em;margin:0 0 10px}h1,h2,h3{line-height:1.15;letter-spacing:0;margin:0}h1{font-size:42px;font-weight:760;max-width:880px}h2{font-size:25px;font-weight:760;margin:0 0 14px}h3{font-size:18px;margin-bottom:8px}.lead{color:var(--muted);font-size:18px;max-width:760px;margin:14px 0 0}.search-panel{border:1px solid #cfd9e8;background:var(--surface);border-radius:8px;padding:16px;box-shadow:0 12px 28px rgba(23,33,47,.06)}.search-panel label{color:var(--muted);display:block;font-size:13px;margin-bottom:8px}.search-row{display:flex;align-items:center;gap:8px;border:1px solid var(--line);background:#f9fbff;border-radius:6px;padding:10px 12px}.search-row input{width:100%;border:0;outline:0;background:transparent;font:inherit}.section{margin:32px 0}.topic-grid,.card-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}.topic,.card{border:1px solid var(--line);background:var(--surface);border-radius:8px;padding:16px;box-shadow:0 8px 20px rgba(23,33,47,.04)}.topic small,.card small,.meta-line{display:block;color:var(--muted);font-size:13px;margin-bottom:8px}.topic p,.card p{color:var(--muted);font-size:14px;margin:0}.layout{display:grid;grid-template-columns:minmax(0,920px) minmax(260px,360px);gap:34px;align-items:start}.article{background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:30px}.article-header{padding-bottom:20px;border-bottom:1px solid var(--line);margin-bottom:22px}.article h1{font-size:28px}.content img{max-width:100%;height:auto}.content .missing-media{border:1px solid #e4c783;background:#fff8e6;color:#5b4420;border-radius:6px;padding:10px 12px;margin:12px 0;font-size:14px}.content hr{border:0;border-top:1px solid var(--line);margin:28px 0}.content h2,.content h3,.content h4{margin-top:26px;color:var(--brand)}.content p{margin:0 0 16px}.question-box{border-left:4px solid var(--accent);background:#fff7e8;padding:14px 16px;margin:18px 0}.output{background:#f4f7f6;border:1px solid var(--line);border-radius:8px;padding:14px 16px;margin:18px 0;font-family:"Cascadia Code",Consolas,"Courier New",monospace;font-size:14px;white-space:pre-wrap}.output p:last-child,.question-box p:last-child{margin-bottom:0}.qa{display:grid;gap:12px;margin:18px 0}.qa-row{border-left:3px solid var(--brand);padding-left:14px}.qa-row strong{display:block;margin-bottom:4px}.code-frame{margin:18px 0 24px;background:#fff;color:#17212f;border-radius:8px;overflow:hidden;border:1px solid #c9d1dd}.code-tools{min-height:42px;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:0 14px;border-bottom:1px solid #c9d1dd;color:#596575;font-size:13px;background:#fff}.code-actions{display:flex;align-items:center;gap:8px;flex-wrap:wrap;justify-content:flex-end}.copy-button{border:1px solid #c5ceda;background:#fff;color:#26313d;border-radius:6px;padding:5px 9px;font:inherit;font-size:12px;cursor:pointer}pre{margin:0;padding:18px;overflow-x:hidden;font-family:"Cascadia Code",Consolas,"Courier New",monospace;font-size:14px;line-height:1.55;white-space:pre-wrap;overflow-wrap:anywhere}.kw{color:#d60000}.control{color:#7a0052}.str{color:#007a00}.com{color:#0000aa}.softcom{color:#8e8e8e}.article-tags{border-top:1px solid var(--line);margin-top:26px;padding-top:18px}.meta{display:flex;flex-wrap:wrap;gap:8px}.pill{display:inline-flex;align-items:center;min-height:26px;padding:3px 9px;border-radius:999px;background:var(--soft);color:#174f9b;font-size:13px;font-weight:650}.sidebar{display:grid;gap:14px}.side-panel{border:1px solid var(--line);background:var(--surface);border-radius:8px;padding:16px}.side-panel h2{font-size:16px}.side-panel ul{list-style:none;padding:0;margin:0;display:grid;gap:9px}.side-panel li{border-top:1px solid #edf0f4;padding-top:9px;font-size:14px}.feedback-layout{display:grid;grid-template-columns:minmax(0,1fr) minmax(300px,420px);gap:28px;align-items:start}.form{display:grid;gap:12px}.form label{display:grid;gap:6px;font-size:13px;color:var(--muted);font-weight:650}.form input,.form textarea{width:100%;border:1px solid var(--line);border-radius:6px;padding:10px 11px;font:inherit;background:#fff;color:var(--ink)}.form textarea{min-height:150px;resize:vertical}.primary{border:0;border-radius:6px;background:var(--brand);color:#fff;padding:11px 14px;font:inherit;font-weight:700;cursor:pointer}.notice{border:1px solid #c7d7d1;background:#eef7f4;color:#254d49;border-radius:8px;padding:14px 16px;margin:16px 0}.footer{border-top:1px solid var(--line);color:var(--muted);font-size:14px;padding:22px 0 30px;text-align:center}@media(max-width:1050px){.topic-grid,.card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.hero,.layout,.feedback-layout{grid-template-columns:1fr}}@media(max-width:900px){.topbar-inner{align-items:center;flex-direction:row;flex-wrap:wrap;padding:14px 0}.menu-toggle{display:inline-grid;place-items:center;margin-left:auto}.nav{display:none;flex-basis:100%;justify-content:flex-start;border-top:1px solid var(--line);padding-top:10px}.nav.open{display:flex}h1{font-size:34px}.article h1{font-size:26px}}@media(max-width:560px){main{width:min(100% - 22px,1360px);padding-top:18px}.brand{min-width:0}.brand img{width:56px;height:56px}.topic-grid,.card-grid{grid-template-columns:1fr}.article{padding:20px 16px}h1{font-size:29px}.article h1{font-size:24px}pre{font-size:13px}}