:root{
 --bg:#020910;--panel:#071827;--panel2:#0a2235;--line:#0a7fb2;--cyan:#22d8ff;
 --blue:#48a8ff;--green:#12ffa2;--magenta:#b767ff;--orange:#ff8a36;
 --text:#eef6fb;--muted:#8fa5b5;--danger:#ff4d67;--shadow:0 18px 50px rgba(0,0,0,.38);
}
*{box-sizing:border-box}html,body{margin:0;height:100%;background:var(--bg);color:var(--text);font-family:Segoe UI,system-ui,sans-serif}
button,input{font:inherit}.app{height:100%;display:grid;grid-template-rows:68px 1fr;overflow:hidden}
.topbar{display:flex;align-items:center;gap:16px;padding:10px 18px;background:linear-gradient(180deg,#091c2b,#061420);border-bottom:1px solid rgba(34,216,255,.24);box-shadow:0 8px 30px rgba(0,0,0,.25);z-index:5}
.brand{display:flex;align-items:center;gap:10px;min-width:250px}.brand img{width:42px;height:42px;object-fit:contain}.brand h1{font-size:18px;margin:0}.brand span{font-size:11px;color:var(--cyan);letter-spacing:1.4px}
.searchWrap{flex:1;max-width:720px;position:relative}.searchWrap input{width:100%;background:#04111b;border:1px solid rgba(34,216,255,.28);color:var(--text);border-radius:10px;padding:12px 42px 12px 15px;outline:none}.searchWrap input:focus{border-color:var(--cyan);box-shadow:0 0 0 3px rgba(34,216,255,.10)}
.kbd{font-size:11px;color:var(--muted);border:1px solid rgba(255,255,255,.15);padding:3px 6px;border-radius:5px}
.topActions{display:flex;gap:8px}.iconBtn{border:1px solid rgba(34,216,255,.25);background:var(--panel2);color:var(--text);border-radius:8px;padding:9px 11px;cursor:pointer}.iconBtn:hover{border-color:var(--cyan);color:var(--cyan)}
.body{display:grid;grid-template-columns:265px 1fr 260px;min-height:0}
.sidebar,.toc{background:#061522;border-right:1px solid rgba(34,216,255,.16);overflow:auto;padding:16px}.toc{border-right:0;border-left:1px solid rgba(34,216,255,.16)}
.sidebarTitle{font-size:11px;color:var(--cyan);font-weight:800;letter-spacing:1.2px;text-transform:uppercase;margin:8px 8px 12px}
.navItem{display:flex;align-items:center;gap:10px;width:100%;border:0;background:transparent;color:var(--muted);padding:10px 12px;border-radius:8px;text-align:left;cursor:pointer}.navItem:hover,.navItem.active{background:rgba(34,216,255,.11);color:var(--text)}.navItem.active{box-shadow:inset 3px 0 var(--cyan)}
.navCount{margin-left:auto;font-size:10px;opacity:.65}
.content{overflow:auto;padding:28px 34px 70px;background:radial-gradient(circle at 70% 0%,rgba(34,216,255,.055),transparent 35%),var(--bg)}
.hero{max-width:1050px;margin:0 auto 24px;padding:26px;border:1px solid rgba(34,216,255,.18);border-radius:16px;background:linear-gradient(135deg,rgba(10,34,53,.95),rgba(5,19,31,.96));box-shadow:var(--shadow)}
.hero h2{font-size:34px;margin:0 0 10px}.hero p{color:var(--muted);max-width:760px;line-height:1.6}.heroGrid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:20px}.quickCard{border:1px solid rgba(34,216,255,.18);border-radius:12px;background:#061624;padding:16px;cursor:pointer}.quickCard:hover{transform:translateY(-2px);border-color:var(--cyan);box-shadow:0 10px 25px rgba(0,0,0,.25)}.quickCard strong{display:block;margin-bottom:5px}.quickCard span{font-size:12px;color:var(--muted)}
.article{max-width:1000px;margin:auto}.articleHeader{margin-bottom:20px}.eyebrow{color:var(--cyan);font-weight:800;font-size:11px;letter-spacing:1.2px;text-transform:uppercase}.article h1{font-size:34px;margin:8px 0}.summary{color:var(--muted);font-size:16px;line-height:1.55}.metaRow{display:flex;gap:10px;flex-wrap:wrap;margin-top:14px}.chip{font-size:11px;border:1px solid rgba(34,216,255,.22);background:rgba(10,34,53,.65);border-radius:999px;padding:5px 9px;color:var(--muted)}
.articleImage{width:100%;max-height:540px;object-fit:contain;background:#01070c;border:1px solid rgba(34,216,255,.18);border-radius:14px;margin:18px 0 25px}
.articleBody{font-size:15px;line-height:1.7}.articleBody h2{margin-top:32px;border-bottom:1px solid rgba(34,216,255,.14);padding-bottom:8px}.articleBody h3{margin-top:24px;color:#d9f6ff}.articleBody a{color:var(--cyan)}.articleBody code{background:#071827;border:1px solid rgba(34,216,255,.15);padding:2px 5px;border-radius:4px}
.steps{counter-reset:step;list-style:none;padding:0}.steps li{position:relative;margin:12px 0;padding:14px 16px 14px 48px;background:#061624;border:1px solid rgba(34,216,255,.13);border-radius:10px}.steps li:before{counter-increment:step;content:counter(step);position:absolute;left:14px;top:12px;width:24px;height:24px;display:grid;place-items:center;border-radius:50%;background:var(--cyan);color:#021018;font-weight:900}
.callout{border-radius:10px;padding:14px 16px;margin:18px 0;border:1px solid}.callout p{margin:5px 0 0}.callout.tip{background:rgba(18,255,162,.07);border-color:rgba(18,255,162,.35)}.callout.warning{background:rgba(255,77,103,.08);border-color:rgba(255,77,103,.38)}.callout.note{background:rgba(72,168,255,.08);border-color:rgba(72,168,255,.38)}
.ref-table{width:100%;border-collapse:collapse;margin:16px 0}.ref-table th,.ref-table td{border:1px solid rgba(34,216,255,.16);padding:10px;text-align:left}.ref-table th{background:#0a2235;color:var(--cyan)}
.related{margin-top:34px;padding-top:20px;border-top:1px solid rgba(34,216,255,.15)}.relatedGrid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}.relatedCard{padding:12px;border:1px solid rgba(34,216,255,.16);border-radius:9px;background:#061624;cursor:pointer}.relatedCard:hover{border-color:var(--cyan)}
.toc h3{font-size:12px;color:var(--cyan);text-transform:uppercase;letter-spacing:1px}.toc a{display:block;color:var(--muted);font-size:12px;padding:7px 5px;text-decoration:none;border-left:2px solid transparent}.toc a:hover{color:var(--text);border-left-color:var(--cyan)}
.searchResults{position:absolute;left:0;right:0;top:48px;background:#061624;border:1px solid rgba(34,216,255,.28);border-radius:10px;box-shadow:var(--shadow);max-height:440px;overflow:auto;display:none}.searchResult{padding:12px 14px;border-bottom:1px solid rgba(255,255,255,.06);cursor:pointer}.searchResult:hover{background:rgba(34,216,255,.1)}.searchResult b{display:block}.searchResult span{font-size:11px;color:var(--muted)}
.fav{color:#ffc34d}.footerNote{font-size:11px;color:var(--muted);margin-top:20px}
.wizard{display:grid;gap:10px}.wizard button{padding:14px;text-align:left;background:#061624;border:1px solid rgba(34,216,255,.16);color:var(--text);border-radius:10px;cursor:pointer}.wizard button:hover{border-color:var(--cyan)}
@media(max-width:1000px){.body{grid-template-columns:220px 1fr}.toc{display:none}.topbar{gap:8px}.brand{min-width:auto}.brand h1{display:none}}
@media(max-width:720px){.app{grid-template-rows:auto 1fr}.topbar{flex-wrap:wrap;padding:8px}.brand span{display:none}.searchWrap{order:3;flex-basis:100%;max-width:none}.topActions{margin-left:auto}.body{display:block}.sidebar{position:fixed;left:0;top:0;bottom:0;width:280px;z-index:20;transform:translateX(-100%);transition:.22s;box-shadow:var(--shadow)}.sidebar.open{transform:translateX(0)}.content{padding:20px 15px 60px}.hero h2,.article h1{font-size:27px}.heroGrid{grid-template-columns:1fr}.relatedGrid{grid-template-columns:1fr}}