:root{--brand:#5b3fd6;--brand2:#7c5cff;--ink:#1f2333;--mute:#5d6478;--line:#e6e8f0;--bg:#f7f8fc}
*{box-sizing:border-box}body{margin:0;font:16px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;color:var(--ink);background:var(--bg)}
a{color:var(--brand)}header{background:linear-gradient(90deg,var(--brand),var(--brand2));color:#fff;padding:14px 24px;display:flex;gap:16px;align-items:center;position:sticky;top:0;z-index:5}
header a{color:#fff;text-decoration:none;font-weight:700;font-size:18px}header .sub{opacity:.85;font-size:14px}
#q{margin-left:auto;padding:8px 12px;border-radius:8px;border:0;width:min(340px,45vw);font-size:15px}
.wrap{display:flex;max-width:1280px;margin:0 auto}nav{width:270px;flex:none;padding:20px 16px;position:sticky;top:60px;height:calc(100vh - 60px);overflow:auto}
nav h4{margin:18px 0 6px;font-size:12px;text-transform:uppercase;letter-spacing:.06em;color:var(--mute)}nav a{display:block;padding:5px 10px;border-radius:6px;color:var(--ink);text-decoration:none;font-size:14.5px}
nav a.on,nav a:hover{background:#ebe7ff;color:var(--brand)}main{flex:1;min-width:0;padding:28px 36px 60px;background:#fff;border-left:1px solid var(--line);min-height:calc(100vh - 60px)}
h1{margin-top:0;font-size:30px}h2{margin-top:34px;font-size:22px;border-bottom:1px solid var(--line);padding-bottom:4px}
figure{margin:18px 0}figure img{max-width:100%;border:1px solid var(--line);border-radius:10px;box-shadow:0 4px 18px rgba(30,30,60,.08)}figcaption{font-size:13.5px;color:var(--mute);margin-top:6px}
.two{display:grid;grid-template-columns:1fr 1fr;gap:16px}table{border-collapse:collapse;width:100%;margin:14px 0;font-size:15px}th,td{border:1px solid var(--line);padding:8px 10px;text-align:left;vertical-align:top}th{background:#f2f0ff}
.tip,.note,.warn{padding:12px 14px;border-radius:8px;margin:16px 0}.tip{background:#eefaf3;border-left:4px solid #2bb673}.note{background:#eef4ff;border-left:4px solid #3d7bfd}.warn{background:#fff6e8;border-left:4px solid #f0a020}
code,kbd,pre{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:13.5px}code,kbd{background:#f2f2f7;padding:1px 5px;border-radius:4px}pre{background:#f2f2f7;padding:12px;border-radius:8px;overflow:auto}
ol.steps li{margin:6px 0}.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:14px}.card{display:block;border:1px solid var(--line);border-radius:12px;padding:16px;text-decoration:none;color:var(--ink);background:#fff}
.card:hover{border-color:var(--brand2);box-shadow:0 4px 14px rgba(91,63,214,.12)}.card b{display:block;color:var(--brand);margin-bottom:4px}.card span{font-size:14px;color:var(--mute)}
#results{display:none;position:absolute;right:24px;top:56px;width:min(460px,92vw);background:#fff;color:var(--ink);border:1px solid var(--line);border-radius:10px;box-shadow:0 10px 30px rgba(0,0,0,.15);max-height:70vh;overflow:auto}
#results a{display:block;padding:10px 14px;border-bottom:1px solid var(--line);text-decoration:none;color:var(--ink)}#results a:hover{background:#f5f3ff}#results small{display:block;color:var(--mute)}
footer{color:var(--mute);font-size:13px;margin-top:50px;border-top:1px solid var(--line);padding-top:14px}
@media(max-width:860px){nav{display:none}main{padding:20px}.two{grid-template-columns:1fr}}