*{margin:0;padding:0;box-sizing:border-box}
:root{--ink:#111827;--muted:#6b7280;--line:#e5e7eb;--bg:#f7f8fa;--card:#fff;--accent:#2563eb;--accent2:#1d4ed8;--green:#059669}
html{-webkit-text-size-adjust:100%}
body{font:16px/1.75 -apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--bg)}
a{color:inherit;text-decoration:none}
.wrap{max-width:1000px;margin:0 auto;padding:0 18px}
header{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:9}
header .wrap{display:flex;align-items:center;justify-content:space-between;height:58px}
.logo{display:flex;align-items:center;gap:9px;font-weight:800;font-size:18px;letter-spacing:.5px}
.logo i{width:28px;height:28px;border-radius:8px;background:linear-gradient(135deg,#3b82f6,#1d4ed8);display:inline-block;position:relative}
.logo i:after{content:"";position:absolute;left:7px;top:6px;width:14px;height:16px;border-radius:2px;background:#fff;opacity:.9}
.nav{display:flex;gap:20px;font-size:14px;color:var(--muted)}
.nav a:hover{color:var(--accent)}
main{padding:22px 0 40px}
nav.crumb{font-size:13px;color:var(--muted);margin-bottom:10px}
nav.crumb a:hover{color:var(--accent)}
.hero{display:grid;grid-template-columns:186px 1fr;gap:26px;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:24px;box-shadow:0 1px 2px rgba(16,24,40,.04)}
.cover{width:100%;aspect-ratio:3/4;object-fit:cover;border-radius:10px;box-shadow:0 8px 24px rgba(16,24,40,.16);background:#eef1f5}
h1{font-size:25px;line-height:1.4;margin-bottom:10px;letter-spacing:.2px}
.sub{color:var(--muted);font-size:14px;margin-bottom:14px}
.badges{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px}
.badge{font-size:12px;padding:3px 10px;border-radius:999px;background:#f1f5f9;color:#475569;border:1px solid #e2e8f0}
.badge.green{background:#ecfdf5;color:#047857;border-color:#d1fae5}
.badge.blue{background:#eff6ff;color:#1d4ed8;border-color:#dbeafe}
.meta{display:grid;grid-template-columns:1fr 1fr;gap:8px 18px;font-size:14px;color:var(--muted);margin-bottom:18px}
.meta b{color:var(--ink);font-weight:600}
.cta{display:flex;align-items:center;justify-content:center;gap:8px;background:linear-gradient(135deg,#3b82f6,#1d4ed8);color:#fff;
padding:14px;border-radius:10px;font-size:17px;font-weight:700;box-shadow:0 6px 16px rgba(37,99,235,.28);transition:.15s}
.cta:hover{transform:translateY(-1px);box-shadow:0 8px 20px rgba(37,99,235,.35)}
.cta.alt{background:linear-gradient(135deg,#10b981,#059669);box-shadow:0 6px 16px rgba(5,150,105,.25)}
.tip{font-size:12px;color:var(--muted);text-align:center;margin-top:9px}
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:22px;margin-top:18px;box-shadow:0 1px 2px rgba(16,24,40,.04)}
h2{font-size:17px;margin-bottom:12px;display:flex;align-items:center;gap:8px}
h2:before{content:"";width:4px;height:16px;border-radius:2px;background:var(--accent);display:inline-block}
p.summary{color:#374151;font-size:15px;white-space:pre-wrap}
ul.links{list-style:none;display:flex;flex-wrap:wrap;gap:9px}
ul.links a{display:block;padding:8px 13px;background:#f8fafc;border:1px solid var(--line);border-radius:8px;
color:#1f2937;font-size:14px;transition:.15s}
ul.links a:hover{background:#eff6ff;border-color:#bfdbfe;color:var(--accent2)}
ul.books{list-style:none;display:grid;grid-template-columns:1fr 1fr;gap:12px}
ul.books li{display:flex;gap:12px;align-items:center;background:#fbfcfe;border:1px solid var(--line);border-radius:10px;padding:10px;transition:.15s}
ul.books li:hover{background:#f5f9ff;border-color:#bfdbfe}
ul.books img{width:44px;height:58px;object-fit:cover;border-radius:6px;background:#e5e7eb;flex:none}
ul.books .t{font-size:14px;font-weight:600;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
ul.books .a{font-size:12px;color:var(--muted);margin-top:2px}
.home-hero{background:linear-gradient(135deg,#1e3a8a,#2563eb);border-radius:16px;color:#fff;padding:34px 28px;margin-bottom:22px}
.home-hero h1{font-size:28px;margin-bottom:8px;color:#fff}
.home-hero p{color:#dbeafe;font-size:14px}
.stat-row{display:flex;gap:26px;margin-top:18px}
.stat-row div{font-size:13px;color:#bfdbfe}
.stat-row b{display:block;font-size:22px;color:#fff}
details{border-top:1px solid var(--line);padding:12px 0}
details:first-of-type{border-top:0}
details summary{cursor:pointer;font-weight:600;font-size:15px;list-style:none}
details summary::-webkit-details-marker{display:none}
details summary:after{content:"+";float:right;color:var(--muted)}
details[open] summary:after{content:"−"}
details p{color:var(--muted);font-size:14px;margin-top:8px}
.rank li{display:flex;gap:12px;padding:12px 0;border-bottom:1px solid var(--line);align-items:center}
.rank li:last-child{border-bottom:0}
.rank .no{width:24px;font-weight:800;color:#9ca3af;text-align:center}
.rank .no.top{color:#ef4444}
footer{border-top:1px solid var(--line);background:#fff;padding:26px 0;font-size:13px;color:var(--muted);margin-top:34px}
footer a:hover{color:var(--accent)}
.center{text-align:center;padding:50px 0}
@media(max-width:720px){.hero{grid-template-columns:1fr;padding:18px}.cover{width:150px;margin:0 auto}
ul.books{grid-template-columns:1fr}h1{font-size:21px}.home-hero{padding:26px 18px}.home-hero h1{font-size:22px}}