:root{--paper:#f5f3ec;--ink:#172c38;--muted:#65716f;--line:#d9ddd5;--accent:#d6522b;--card:#fffefa}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.8 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC",sans-serif}a{color:inherit;text-decoration:none}a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid var(--accent);outline-offset:4px}.wrap{max-width:1140px;margin:auto;padding:0 32px}header{border-bottom:1px solid var(--line)}nav{min-height:88px;display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;padding-top:14px;padding-bottom:14px}.brand{font-size:21px;font-weight:750;letter-spacing:1px}.brand small{display:block;font-size:10px;font-weight:500;letter-spacing:3px;color:var(--muted)}.links{display:flex;align-items:center;gap:24px;font-size:14px}.cta{display:inline-block;padding:10px 18px;background:var(--accent);color:#fff;border-radius:5px;font-weight:650}.cta:hover{background:#b84423}.hero{padding:68px 0 40px;display:grid;grid-template-columns:1.5fr 1fr;gap:70px;align-items:end}.eyebrow{font-size:12px;letter-spacing:3px;color:var(--accent);font-weight:750}h1{font-size:clamp(34px,4.4vw,54px);line-height:1.35;margin:17px 0 20px;letter-spacing:-1px}h2{line-height:1.5}.intro{color:var(--muted);font-size:17px;max-width:560px}.aside{padding-left:24px;border-left:2px solid var(--accent);font-size:14px;color:var(--muted)}.aside strong{display:block;color:var(--ink);font-size:18px;margin-bottom:8px}.toolbar{border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:20px 0;display:flex;gap:18px;align-items:center;justify-content:space-between;flex-wrap:wrap}.filters{display:flex;gap:10px;flex-wrap:wrap}button{cursor:pointer;border:1px solid var(--line);border-radius:30px;padding:7px 16px;background:transparent;color:var(--ink);font:inherit;font-size:13px}button[aria-pressed=true]{background:var(--ink);color:#fff;border-color:var(--ink)}input{background:var(--card);border:1px solid var(--line);padding:10px 14px;border-radius:4px;font:inherit;font-size:14px;width:250px;max-width:100%}.section-label{display:flex;justify-content:space-between;font-size:12px;letter-spacing:2px;color:var(--muted);margin:30px 0 20px}.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}.card{background:var(--card);border:1px solid var(--line);border-radius:7px;padding:30px;position:relative;transition:transform .2s}.card:hover{transform:translateY(-3px)}.card h2{font-size:24px;line-height:1.5;margin:14px 0}.card p{font-size:15px;color:var(--muted)}.meta{font-size:12px;color:var(--muted)}.pill{display:inline-block;padding:2px 9px;background:#e7ece5;color:#42594c;border-radius:3px;font-size:11px;margin-right:8px}.read{display:block;margin-top:25px;color:var(--accent);font-size:14px;font-weight:650}.platform{margin:36px 0 20px;background:var(--card);border:1px solid var(--line);color:var(--muted);padding:14px 20px;border-radius:6px;font-size:13px}.platform p{margin:3px 0 0;color:var(--muted);font-size:13px}.platform a{color:var(--accent);text-decoration:underline;font-weight:600}.platform a:hover{color:#b84423}footer{padding:25px 0 38px;border-top:1px solid var(--line);color:var(--muted);font-size:12px}footer a{text-decoration:underline}.article{max-width:790px;margin:55px auto}.article h1{font-size:clamp(30px,4vw,43px)}.article .lead{font-size:18px;color:var(--muted);margin-bottom:30px}.prose{font-size:17px;line-height:1.95}.prose h2{font-size:25px;margin-top:42px}.prose a{color:var(--accent);text-decoration:underline}.source{padding:18px 20px;border-left:3px solid var(--accent);background:var(--card);font-size:13px;margin:30px 0}.back{color:var(--muted);font-size:13px}.empty{padding:40px;color:var(--muted)}[hidden]{display:none!important}@media(max-width:700px){.wrap{padding:0 20px}.links{gap:14px;font-size:12px}.links .cta{padding:8px 10px}.hero{padding:42px 0 28px;grid-template-columns:1fr;gap:24px}.aside{margin-bottom:10px}.grid{grid-template-columns:1fr}.card{padding:24px}.toolbar{align-items:stretch}input{width:100%}.platform{align-items:flex-start;flex-direction:column;padding:26px}.article{margin:32px auto}.prose{font-size:16px}.brand{font-size:18px}}

.index-page{max-width:790px;margin:50px auto}.index-list{display:grid}.index-entry{padding:20px 0;border-bottom:1px solid var(--line)}.index-entry h2{margin:0 0 6px;font-size:22px}.index-entry h2 a:hover{color:var(--accent)}.index-entry p{margin:0;color:var(--muted);font-size:15px}.prose h2,.prose h3{scroll-margin-top:25px}.table-scroll{max-width:100%;overflow-x:auto}.prose table{border-collapse:collapse;font-size:14px;min-width:600px}.prose th,.prose td{border:1px solid var(--line);padding:10px;vertical-align:top}.prose th{background:#e7ece5;text-align:left}@media(max-width:700px){.index-entry{padding:18px 0}.index-page{margin:30px 0}.links{flex-wrap:wrap}}

.reading-page .lead{color:var(--muted)}.reading-jumps{display:flex;flex-wrap:wrap;gap:10px;margin:26px 0 36px}.reading-jumps a{border:1px solid var(--line);border-radius:5px;padding:6px 12px;background:var(--card);font-size:14px}.reading-jumps a:hover{border-color:var(--accent);color:var(--accent)}.reading-section{margin:40px 0;scroll-margin-top:24px}.reading-section>h2{font-size:27px;margin-bottom:8px}.reading-section>p,.case-entry>p{color:var(--muted)}.reading-list{padding-left:24px}.reading-list li{padding:12px 0;border-bottom:1px solid var(--line)}.reading-list a{color:var(--accent);font-weight:650}.reading-list p{margin:4px 0;color:var(--muted);font-size:15px}.case-entry{margin:28px 0}.case-entry h3{margin-bottom:8px}.links{flex-wrap:wrap}
pre.mermaid{background:var(--card);border:1px solid var(--line);border-radius:6px;padding:20px;text-align:center;overflow-x:auto;margin:28px 0;white-space:pre}pre.mermaid>svg{max-width:100%;height:auto;display:inline-block;margin:0 auto}.prose blockquote{margin:20px 0;padding:14px 20px;border-left:4px solid var(--accent);background:var(--card);border-radius:0 6px 6px 0;color:var(--ink);font-size:15px}.prose blockquote p{margin:6px 0}.prose blockquote p:first-child{margin-top:0}.prose blockquote p:last-child{margin-bottom:0}
details.index-channel-fold summary::-webkit-details-marker,details.index-channel-fold summary::marker{display:none}details.index-channel-fold summary:hover{background:rgba(0,0,0,0.015)}details.index-channel-fold:not([open]) .fold-pill::after{content:"点击展开 ▾"}details.index-channel-fold[open] .fold-pill::after{content:"收起列表 ▴"}details.index-channel-fold[open] .fold-pill{background:var(--ink);color:#fff;border-color:var(--ink)}.nav-helix{color:#ea580c!important;font-weight:700!important;padding:4px 12px;border:1.5px solid #ea580c!important;border-radius:18px;background:rgba(234,88,12,0.08)!important;display:inline-flex;align-items:center;transition:all .2s;text-decoration:none}.nav-helix:hover{background:#ea580c!important;color:#fff!important}.platform a,.platform-helix{color:#ea580c!important;text-decoration:underline;font-weight:700!important}.platform a:hover,.platform-helix:hover{color:#c2410c!important}@media(max-width:700px){.links .nav-helix{padding:4px 9px;font-size:12px}}

/* Multi-Channel Portal & Separation Styles */
.portal-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:20px;margin:32px 0 50px}
.portal-card{background:var(--card);border:1.5px solid var(--line);border-radius:10px;padding:28px 24px;position:relative;display:flex;flex-direction:column;justify-content:space-between;box-shadow:0 2px 8px rgba(0,0,0,0.03);transition:all .25s ease}
.portal-card:hover{transform:translateY(-4px);border-color:var(--accent);box-shadow:0 8px 24px rgba(0,0,0,0.06)}
.portal-card .channel-badge{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:700;letter-spacing:1px;padding:4px 10px;border-radius:20px;margin-bottom:16px;width:fit-content}
.portal-card.qizhi .channel-badge{background:rgba(14,116,144,0.12);color:#0e7490}
.portal-card.laozeng .channel-badge{background:rgba(109,40,217,0.12);color:#6d28d9}
.portal-card.wangcen .channel-badge{background:rgba(194,65,12,0.12);color:#c2410c}
.portal-card.daowen .channel-badge{background:rgba(37,99,235,0.12);color:#2563eb}
.portal-card h2{font-size:22px;line-height:1.4;margin:0 0 10px;letter-spacing:-0.5px}
.portal-card p.desc{font-size:14px;color:var(--muted);line-height:1.7;margin:0 0 20px;flex-grow:1}
.portal-card .stats{font-size:13px;font-weight:700;color:var(--ink);padding:10px 0;border-top:1px dashed var(--line);border-bottom:1px dashed var(--line);margin-bottom:20px;display:flex;justify-content:space-between}
.portal-card .enter-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 18px;border-radius:6px;font-weight:650;font-size:14px;text-align:center;transition:all .2s;text-decoration:none}
.portal-card.qizhi .enter-btn{background:#0e7490;color:#fff}
.portal-card.qizhi .enter-btn:hover{background:#155e75}
.portal-card.laozeng .enter-btn{background:#6d28d9;color:#fff}
.portal-card.laozeng .enter-btn:hover{background:#5b21b6}
.portal-card.wangcen .enter-btn{background:#c2410c;color:#fff}
.portal-card.wangcen .enter-btn:hover{background:#9a3412}
.portal-card.daowen .enter-btn{background:#2563eb;color:#fff}
.portal-card.daowen .enter-btn:hover{background:#1d4ed8}

/* Header channel nav */
.channel-switch{display:inline-flex;align-items:center;gap:8px;background:rgba(0,0,0,0.04);padding:4px 10px;border-radius:20px;font-size:13px;font-weight:600}
.channel-switch a{color:var(--muted);padding:2px 8px;border-radius:12px;transition:all .2s}
.channel-switch a:hover{color:var(--ink)}
.channel-switch a.active{background:var(--card);color:var(--ink);box-shadow:0 1px 3px rgba(0,0,0,0.08)}

/* View Toggle: Card Grid vs Vertical List */
.view-toggle-wrap{display:inline-flex;align-items:center;border:1px solid var(--line);border-radius:6px;background:var(--card);overflow:hidden}
.view-btn{padding:5px 12px;border:none!important;border-radius:0!important;background:transparent;color:var(--muted);font-size:13px;font-weight:600;display:inline-flex;align-items:center;gap:5px;cursor:pointer;transition:all .15s}
.view-btn:hover{color:var(--ink)}
.view-btn.active{background:var(--ink)!important;color:#fff!important}

.grid.view-list{display:flex;flex-direction:column;gap:12px}
.grid.view-list .card{padding:18px 22px;border-radius:6px;transition:all .15s ease}
.grid.view-list .card:hover{transform:translateX(4px);border-color:var(--accent)}
.grid.view-list .card .card-top{display:flex;justify-content:space-between;align-items:baseline;gap:16px;flex-wrap:wrap;margin-bottom:6px}
.grid.view-list .card h2{font-size:19px;line-height:1.4;margin:0 0 6px}
.grid.view-list .card p{font-size:14px;line-height:1.6;margin:0 0 10px;color:var(--muted)}
.grid.view-list .card .read{display:none}

@media(max-width:900px){
  .portal-grid{grid-template-columns:1fr;gap:20px}
}