:root{--bg:#f7f7fa;--paper:#fff;--ink:#17171c;--muted:#6b6b76;--line:#e7e7ee;--violet:#5a4cf0;--blue:#2f6bff}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;background:var(--bg);color:var(--ink);line-height:1.6}
a{color:var(--ink);text-decoration:none}
.topbar{max-width:1080px;margin:0 auto;padding:18px 20px;display:flex;align-items:center;justify-content:space-between;gap:14px}
.topbar .brand{font-weight:800;font-size:20px;letter-spacing:.5px;color:var(--violet)}
.topbar nav{display:flex;gap:16px;flex-wrap:wrap}
.topbar nav a{color:var(--muted);font-size:14px;font-weight:600}
.topbar nav a:hover{color:var(--ink)}
main{max-width:1080px;margin:0 auto;padding:10px 20px 40px}
footer{max-width:1080px;margin:0 auto;padding:24px 20px 40px;color:var(--muted);font-size:12px;display:flex;gap:14px;flex-wrap:wrap;border-top:1px solid var(--line)}
footer a{color:var(--muted)}
.hero{padding:44px 0 30px}
.eyebrow{font-size:12px;letter-spacing:2px;color:var(--violet);font-weight:700}
.hero h1{font-size:40px;margin:8px 0;font-weight:800}
.hero p{color:var(--muted);max-width:560px}
.sectionline{display:flex;align-items:baseline;gap:12px;margin:34px 0 16px}
.sectionline span{font-size:11px;letter-spacing:2px;color:var(--violet);font-weight:700}
.sectionline h2{font-size:22px;font-weight:800}
.sectionline a{margin-left:auto;font-size:13px;color:var(--blue)}
.list{display:flex;flex-direction:column;gap:0}
.item{background:var(--paper);border:1px solid var(--line);border-bottom:none;padding:14px 18px;display:block}
.item:first-child{border-radius:12px 12px 0 0}
.item:last-child{border-bottom:1px solid var(--line);border-radius:0 0 12px 12px}
.item b{display:block;font-size:15px}
.item p{color:var(--muted);font-size:13px;margin-top:4px}
.item small{color:var(--muted);font-size:11px}
.item:hover{background:#fafaff}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:14px}
.card{background:var(--paper);border:1px solid var(--line);border-radius:12px;padding:16px;display:flex;flex-direction:column;gap:6px}
.card b{font-size:16px}
.card small{color:var(--muted);font-size:11px}
.card p{color:var(--muted);font-size:13px;flex:1}
.chip{display:inline-block;font-size:11px;color:var(--violet);background:#f0eeff;border-radius:20px;padding:2px 10px;align-self:flex-start}
.tut-list{display:flex;flex-direction:column;gap:0}
.tut-list a{background:var(--paper);border:1px solid var(--line);border-bottom:none;padding:13px 18px;display:flex;justify-content:space-between;gap:10px;align-items:center}
.tut-list a:first-child{border-radius:12px 12px 0 0}
.tut-list a:last-child{border-bottom:1px solid var(--line);border-radius:0 0 12px 12px}
.tut-list a b{font-size:14px}
.tut-list a small{color:var(--muted);font-size:11px;white-space:nowrap}
.tut-list a:hover{background:#fafaff}
.cats{display:flex;gap:8px;flex-wrap:wrap;margin:18px 0}
.cats a{background:var(--paper);border:1px solid var(--line);border-radius:20px;padding:5px 14px;font-size:13px}
.cats a.on{background:var(--violet);color:#fff;border-color:var(--violet)}
.pagehead{padding:10px 0}
.pagehead h1{font-size:30px;font-weight:800;margin:6px 0}
.pagehead p{color:var(--muted);font-size:14px}
.crumb{font-size:12px;color:var(--muted);margin:10px 0 16px}
.crumb a{color:var(--muted)}
.detail{max-width:780px}
.detail h1{font-size:28px;font-weight:800;margin:8px 0}
.meta{color:var(--muted);font-size:12px}
.lead{font-size:17px;color:#333;margin:10px 0}
.tag{display:inline-block;font-size:11px;padding:3px 10px;border-radius:20px;background:#f0eeff;color:var(--violet);font-weight:700;margin-bottom:8px}
.body{background:var(--paper);border:1px solid var(--line);border-radius:12px;padding:18px 20px;margin:12px 0;font-size:15px}
.body h2{font-size:19px;font-weight:800;margin:16px 0 8px;border-bottom:1px solid var(--line);padding-bottom:6px}
.body p{margin:8px 0}
.body ul{margin:8px 0 8px 22px}
.specs{display:flex;gap:20px;flex-wrap:wrap;background:var(--paper);border:1px solid var(--line);border-radius:12px;padding:12px 18px;margin:10px 0}
.specs div{display:flex;flex-direction:column}
.specs small{color:var(--muted);font-size:11px}
.specs b{font-size:14px}
.source{display:inline-block;margin:8px 0;color:var(--blue);font-weight:600;font-size:14px}
.alternates{color:var(--muted);font-size:13px}
.empty{color:var(--muted);padding:20px 0}
@media(max-width:700px){.hero h1{font-size:30px}.topbar nav{gap:10px}.topbar nav a{font-size:12px}}