:root{
  --bg:#f5f7fb;--card:#fff;--text:#1f2937;--muted:#6b7280;--border:#e5e7eb;
  --accent:#3b82f6;--accent-soft:rgba(59,130,246,.1);--shadow:0 4px 18px rgba(31,41,55,.07);
  --hero:linear-gradient(135deg,#3b82f6 0%,#8b5cf6 100%);--bar:rgba(255,255,255,.85);
}
[data-theme="dark"]{
  --bg:#0e1116;--card:#171b23;--text:#e5e7eb;--muted:#9ca3af;--border:#2a303c;
  --accent:#60a5fa;--accent-soft:rgba(96,165,250,.12);--shadow:0 4px 18px rgba(0,0,0,.4);
  --hero:linear-gradient(135deg,#1e3a8a 0%,#4c1d95 100%);--bar:rgba(14,17,22,.85);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);
  font:15px/1.75 -apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Segoe UI",sans-serif;
  transition:background .3s,color .3s}
a{color:inherit;text-decoration:none}
code{background:var(--accent-soft);padding:1px 6px;border-radius:5px;font-size:.92em}

/* 顶部菜单 */
.topbar{position:sticky;top:0;z-index:20;background:var(--bar);backdrop-filter:blur(12px);
  border-bottom:1px solid var(--border)}
.topbar-inner{max-width:1200px;margin:0 auto;display:flex;align-items:center;gap:16px;padding:0 20px;height:60px}
.brand{font-weight:800;font-size:1.15rem;white-space:nowrap;
  background:var(--hero);-webkit-background-clip:text;background-clip:text;color:transparent}
[data-theme="dark"] .brand{background-image:linear-gradient(135deg,#60a5fa,#c4b5fd)}
.menu{display:flex;gap:2px;flex:1;justify-content:center}
.menu a{padding:6px 12px;border-radius:8px;color:var(--muted);font-size:14.5px;white-space:nowrap;transition:.2s}
.menu a:hover{color:var(--text);background:var(--accent-soft)}
.menu a.active{color:var(--accent);background:var(--accent-soft);font-weight:600}
.tools{display:flex;gap:4px}
.tool{border:0;background:transparent;cursor:pointer;font-size:17px;width:36px;height:36px;border-radius:8px;color:var(--text)}
.tool:hover{background:var(--accent-soft)}
.menu-btn{display:none}

/* 通用 */
.wrap{max-width:1200px;margin:0 auto;padding:28px 20px}
.hero{background:var(--hero);color:#fff;text-align:center;padding:72px 20px 64px}
.hero h1{margin:0;font-size:2.3rem;letter-spacing:1px}
.hero p{margin:10px 0 0;opacity:.92}
.hero.small{padding:48px 20px 44px}
.hero.small h1{font-size:1.9rem}
.section-title{display:flex;align-items:center;gap:8px;font-size:1.25rem;margin:8px 0 16px;
  padding-left:12px;border-left:4px solid var(--accent)}
.grid{display:grid;gap:16px}
.cols-3{grid-template-columns:repeat(auto-fill,minmax(300px,1fr))}
.card{background:var(--card);border:1px solid var(--border);border-radius:14px;box-shadow:var(--shadow);
  transition:transform .2s,border-color .2s}
a.card:hover{transform:translateY(-3px);border-color:var(--accent)}

.col-card{display:block;padding:20px}
.col-card .ic{font-size:28px}
.col-card h3{margin:6px 0 4px;font-size:1.08rem}
.col-card p{margin:0;color:var(--muted);font-size:14px}
.col-card .subs{display:flex;flex-wrap:wrap;gap:6px;margin-top:12px}
.chip{display:inline-block;font-size:12.5px;padding:2px 10px;border-radius:999px;
  background:var(--accent-soft);color:var(--accent);white-space:nowrap}
button.chip{border:1px solid transparent;cursor:pointer;font-family:inherit}
button.chip.on{background:var(--accent);color:#fff}

/* 栏目页 */
.col-layout{display:flex;gap:24px;align-items:flex-start}
.side{position:sticky;top:80px;width:220px;flex-shrink:0;padding:10px}
.side a{display:flex;justify-content:space-between;gap:8px;padding:8px 12px;border-radius:10px;color:var(--muted);font-size:14px}
.side a:hover{background:var(--accent-soft);color:var(--text)}
.side a.active{background:var(--accent);color:#fff}
.side .n{font-size:12px;opacity:.75}
.col-main{flex:1;min-width:0}
.rule{display:flex;gap:10px;padding:14px 16px;margin-bottom:20px;font-size:14px;color:var(--muted);
  border-left:4px solid #f59e0b}
.sub-block{margin-bottom:28px;scroll-margin-top:80px}
.sub-block h2{font-size:1.12rem;margin:0}
.sub-block .sd{color:var(--muted);font-size:14px;margin:2px 0 12px}
.empty-sub{padding:16px;color:var(--muted);font-size:14px;text-align:center;border-style:dashed}
.filters{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:18px;align-items:center}
.filters span{color:var(--muted);font-size:14px}

/* 文章卡片 */
.post-list{display:grid;gap:12px}
.post-item{display:block;padding:16px 18px}
.post-item h3{margin:0 0 4px;font-size:1.05rem}
.post-item p{margin:0 0 8px;color:var(--muted);font-size:14px}
.post-meta{display:flex;flex-wrap:wrap;gap:6px;align-items:center;font-size:12.5px;color:var(--muted)}

/* 文章页 */
.article{max-width:820px;margin:0 auto;padding:32px 36px}
.article h1{margin:0 0 8px;font-size:1.75rem;line-height:1.4}
.crumb{font-size:13px;color:var(--muted);margin-bottom:10px}
.crumb a:hover{color:var(--accent)}
.article .body h2{font-size:1.25rem;margin:28px 0 10px;padding-bottom:6px;border-bottom:1px solid var(--border)}
.article table{width:100%;border-collapse:collapse;margin:12px 0;font-size:14px;display:block;overflow-x:auto}
.article th,.article td{border:1px solid var(--border);padding:8px 10px;text-align:left;min-width:70px}
.article th{background:var(--accent-soft)}
.article pre{background:#0f172a;color:#e2e8f0;padding:14px 16px;border-radius:10px;overflow:auto}
.article pre code{background:none;padding:0;color:inherit}
.infobox{display:grid;gap:6px;background:var(--accent-soft);border-radius:12px;padding:14px 18px;margin:18px 0;font-size:14px}
.infobox b{display:inline-block;min-width:190px;color:var(--accent)}
.article .body,.sources,.referral{overflow-wrap:anywhere}
.article .body a,.sources a{color:var(--accent);text-decoration:underline;text-underline-offset:3px}
.article-evidence{display:flex;flex-wrap:wrap;gap:6px 18px;margin:16px 0;color:var(--muted);font-size:13px}
.ref-disclosure{padding:12px 16px;border-left:3px solid var(--accent);background:var(--accent-soft)}
.sources{border-top:1px solid var(--border);margin-top:28px;padding-top:12px;font-size:14px}
.sources h2,.referral h2{font-size:1.12rem}.official-entry{margin-top:20px}
.resource-card{padding-bottom:12px;min-width:0}.resource-actions{display:flex;flex-wrap:wrap;gap:6px;padding:0 14px}
.resource-date{font-size:12px;color:var(--muted);margin:8px 14px 0}
.resource-card .desc{white-space:normal;line-height:1.5;overflow:visible}
.ref-label{display:block;width:100%;font-size:12px;color:var(--muted)}
.resource-name:hover,.resource-name:focus-visible{color:var(--accent);text-decoration:underline;text-underline-offset:3px}
.resource-name:focus-visible,.product-entry:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:3px}
.article-product-entries,.referral-actions{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.article-product-entries{margin:14px 0 20px}.invite-code{font-size:13px;overflow-wrap:anywhere}
.referral-actions .chip,.resource-actions .chip,.article-product-entries .chip{white-space:normal;overflow-wrap:anywhere;max-width:100%}
.referral-note{margin:4px 0;color:var(--muted);font-size:13px}
.referral-images{display:grid;gap:16px;min-width:0;margin-top:10px}
.referral-images figure{margin:0;min-width:0}.referral-images a{display:block}
.referral-images img{display:block;width:auto;max-width:100%;height:auto;border-radius:8px;border:1px solid var(--border);background:var(--card)}
.referral-images figcaption{margin-top:6px;font-size:12px;color:var(--muted);line-height:1.6;overflow-wrap:anywhere}
.copy-fallback{position:fixed;left:-9999px;top:0}.article pre{max-width:100%;font-size:13px}
.article .body blockquote{margin:16px 0;border-left:3px solid var(--accent);padding:8px 16px;background:var(--accent-soft)}

/* 资源导航 */
.nav-search{max-width:560px;margin:22px auto 0}
.nav-search input,.search-box input{width:100%;padding:13px 20px;border:0;border-radius:999px;font-size:1rem;
  background:rgba(255,255,255,.96);color:#1f2937;outline:none;box-shadow:0 8px 24px rgba(0,0,0,.15)}
.link-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:14px}
.link{display:flex;align-items:center;gap:12px;padding:14px}
.link .icon{width:42px;height:42px;flex-shrink:0;border-radius:12px;display:grid;place-items:center;
  font-weight:700;color:#fff;overflow:hidden}
.link .icon img{width:26px;height:26px;object-fit:contain}
.link .meta{min-width:0}
.link .name{font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.link .desc{font-size:13px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.resource-card .desc{white-space:normal;line-height:1.5;overflow:visible}
mark{background:#fde68a;color:#1f2937;border-radius:3px;padding:0 1px}

/* 搜索面板 */
.search-panel{position:fixed;inset:0;z-index:30;background:rgba(0,0,0,.45);display:flex;justify-content:center;padding-top:12vh}
.search-panel[hidden]{display:none}
.search-box{width:min(640px,92vw)}
#search-results{margin-top:12px;max-height:60vh;overflow:auto;display:grid;gap:8px}
#search-results .post-item{background:var(--card);border-radius:12px}

.footer{text-align:center;color:var(--muted);font-size:13px;padding:28px 20px 44px;border-top:1px solid var(--border);margin-top:20px}
.to-top{position:fixed;right:20px;bottom:24px;width:42px;height:42px;border:0;border-radius:50%;
  background:var(--accent);color:#fff;font-size:18px;cursor:pointer;opacity:0;pointer-events:none;transition:.3s;box-shadow:var(--shadow)}
.to-top.show{opacity:1;pointer-events:auto}

@media (max-width:1000px){
  .menu{display:none;position:absolute;top:60px;left:0;right:0;flex-direction:column;background:var(--card);
    padding:10px;border-bottom:1px solid var(--border);box-shadow:var(--shadow)}
  .menu.open{display:flex}
  .menu a{padding:10px 14px}
  .menu-btn{display:block}
  .topbar-inner{justify-content:space-between}
}
@media (max-width:768px){
  .hero{padding:52px 16px 44px}.hero h1{font-size:1.8rem}
  .wrap{padding:18px 14px}
  .col-layout{flex-direction:column}
  .side{position:sticky;top:60px;z-index:5;width:100%;display:flex;overflow-x:auto;gap:4px;padding:6px}
  .side a{white-space:nowrap}.side .n{display:none}
  .article{padding:22px 18px}
  .infobox b{min-width:0;display:block}
  .link-grid{grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:10px}
}
@media(max-width:400px){.cols-3{grid-template-columns:minmax(0,1fr)}.article h1{font-size:1.4rem}.link-grid{grid-template-columns:minmax(0,1fr)}}