*{margin:0;padding:0;box-sizing:border-box}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",sans-serif;color:#2c3e50;line-height:1.75;background:#f8f9fa}
a{color:#007bff;text-decoration:none}
a:hover{text-decoration:underline}
.topbar{position:sticky;top:0;z-index:200;background:#fff;border-bottom:1px solid #eef1f5}
.topbar .inner{max-width:1200px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:12px 16px}
.topbar .brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:18px;color:#2c3e50}
.topbar .brand:hover{text-decoration:none}
.topbar .brand img{width:30px;height:30px;border-radius:7px}
.topbar nav{display:flex;align-items:center;gap:22px}
.topbar nav a{font-size:14px;font-weight:600;color:#2c3e50}
.topbar nav a:hover{color:#007bff;text-decoration:none}
.topbar nav a.cur{color:#007bff}
.topbar nav a.dl{padding:8px 16px;border-radius:20px;color:#fff;background:linear-gradient(135deg,#007bff,#00bfff);font-weight:700}
.topbar nav a.dl:hover{color:#fff;box-shadow:0 4px 12px rgba(0,191,255,.3)}
@media (max-width:860px){.topbar nav{gap:12px}.topbar nav a.hideSm{display:none}}
.layout{display:flex;max-width:1200px;margin:0 auto;gap:32px;padding:24px 16px}
.sidebar{width:248px;flex:0 0 248px;position:sticky;top:72px;align-self:flex-start;max-height:calc(100vh - 88px);overflow:auto;background:#fff;border:1px solid #eef1f5;border-radius:12px;padding:16px 12px;box-shadow:0 1px 3px rgba(0,0,0,.06)}
.sidebar .site{display:flex;align-items:center;gap:8px;font-weight:800;font-size:16px;color:#2c3e50;padding:4px 8px 12px;border-bottom:1px solid #f0f2f6;margin-bottom:6px;text-decoration:none}
.sidebar a.site:hover{color:#007bff;text-decoration:none}
.sidebar .site img{width:26px;height:26px;border-radius:6px}
.sidebar .grp{font-size:13px;font-weight:800;color:#2c3e50;padding:12px 8px 4px;display:flex;align-items:center;gap:6px}
.sidebar .cat{font-size:11px;font-weight:700;color:#aab2c0;letter-spacing:2px;padding:6px 8px 4px;margin-top:14px;border-top:1px solid #f0f2f6}
.sidebar a.item{display:block;padding:8px 12px;border-radius:8px;font-size:15px;font-weight:600;color:#2c3e50}
.sidebar a.item:hover{background:#f5f8fc;color:#007bff;text-decoration:none}
.sidebar a.item.active{background:linear-gradient(135deg,#007bff 0%,#00bfff 100%);color:#fff}
.sidebar a.item .nb{display:inline-block;background:#ff4757;color:#fff;font-size:10px;font-weight:700;line-height:1;padding:2px 5px;border-radius:8px;margin-left:6px;vertical-align:middle}
.sidebar a.item.active .nb{background:rgba(255,255,255,.3)}
.sidebar .back{margin-top:12px;border-top:1px solid #f0f2f6;padding-top:10px}
.sidebar .back a{display:block;padding:6px 10px;font-size:13px;color:#8a94a6}
.sidebar .back a:hover{color:#007bff;text-decoration:none}
.content{flex:1;min-width:0;background:#fff;border:1px solid #eef1f5;border-radius:12px;padding:36px 40px;box-shadow:0 1px 3px rgba(0,0,0,.06)}
.content h1{font-size:26px;line-height:1.35;margin-bottom:6px;padding-bottom:14px;border-bottom:1px solid #f0f2f6}
.content .meta{font-size:13px;color:#8a94a6;margin:-6px 0 22px}
.content h2{font-size:21px;margin:30px 0 12px;border-left:4px solid #007bff;padding-left:10px}
.content h3{font-size:17px;margin:22px 0 8px;color:#007bff}
.content p{margin:12px 0;font-size:15px;color:#3d4b5c}
.content ol,.content ul{margin:12px 0 12px 22px}
.content li{font-size:15px;color:#3d4b5c;margin:6px 0}
.content code{background:#f2f4f8;border-radius:4px;padding:2px 6px;font-size:90%;color:#0a6cd6}
.content strong{color:#2c3e50}
.content img{max-width:100%;height:auto;display:block;margin:16px auto;border-radius:8px;border:1px solid #eef1f5}
.content table{width:100%;border-collapse:collapse;font-size:14px;margin:14px 0;max-width:880px}
.content th,.content td{border:1px solid #e3ebf3;padding:8px 12px;text-align:left}
.content th{background:#f5f8fc;color:#2c3e50;font-weight:700}
.content tr:nth-child(even){background:#fafbfd}
.note{background:#fffbe6;border-left:4px solid #ffcc00;padding:10px 14px;margin:16px 0;border-radius:6px;font-size:14px;color:#6b5900}
.badge{display:inline-block;background:linear-gradient(90deg,#007bff,#00aaff);color:#fff;border-radius:999px;padding:2px 10px;font-size:12px;margin-left:8px}
.badge-new{background:linear-gradient(90deg,#ff6b6b,#ff8787)}
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:14px;margin:16px 0 8px}
.card{display:block;background:#f8fafd;border:1px solid #e3ebf3;border-radius:10px;padding:16px 18px;transition:all .2s}
.card:hover{box-shadow:0 8px 22px rgba(0,191,255,.16);transform:translateY(-2px);text-decoration:none}
.card b{display:block;font-size:15px;color:#0a6cd6;margin-bottom:4px}
.section-title{font-size:18px;font-weight:800;margin:28px 0 4px;color:#2c3e50}
.tl-item{display:block;padding:16px 18px;border:1px solid #eef1f5;border-radius:10px;margin:12px 0;background:#fff;transition:all .2s}
.tl-item:hover{box-shadow:0 8px 22px rgba(0,191,255,.14);transform:translateY(-1px);text-decoration:none}
.tl-item .d{font-size:12px;font-weight:700;color:#007bff;background:rgba(0,123,255,.08);border:1px solid #b9d8ff;border-radius:12px;padding:2px 10px;display:inline-block}
.tl-item b{display:block;font-size:16px;color:#2c3e50;margin:8px 0 4px}
.tl-item span{font-size:13px;color:#6b7785}
@media (max-width:860px){.layout{flex-direction:column;padding:12px}.sidebar{width:100%;flex:none;position:static;max-height:none}.content{padding:22px 18px}}