:root{--fg:#1a1a1a;--muted:#5c6670;--line:#e4e7ea;--accent:#0b6b52;--bg:#fff;--soft:#f7f9f8}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--fg);font:17px/1.85 -apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif}
.wrap{max-width:760px;margin:0 auto;padding:0 20px}
header.site{border-bottom:1px solid var(--line);padding:16px 0}
header.site .wrap{display:flex;justify-content:space-between;align-items:center;gap:16px}
header.site a{color:var(--fg);text-decoration:none;font-weight:600}
header.site nav a{color:var(--muted);font-weight:400;font-size:15px;margin-left:18px}
main{padding:36px 0 64px}
.crumb{font-size:13px;color:var(--muted);margin-bottom:22px}
.crumb a{color:var(--muted);text-decoration:none}
h1{font-size:1.72em;line-height:1.35;margin:0 0 14px;letter-spacing:-.01em}
h2{font-size:1.28em;line-height:1.45;margin:2.2em 0 .7em;padding-top:.2em}
h3{font-size:1.06em;margin:1.6em 0 .5em}
p{margin:0 0 1.05em}
a{color:var(--accent)}
.meta{font-size:13.5px;color:var(--muted);margin-bottom:26px;display:flex;flex-wrap:wrap;gap:6px 16px}
.answer{background:var(--soft);border-left:3px solid var(--accent);padding:18px 20px;margin:0 0 28px;border-radius:0 6px 6px 0}
.answer strong{display:block;font-size:12px;letter-spacing:.08em;color:var(--accent);margin-bottom:6px}
.takeaways{background:var(--soft);border:1px solid var(--line);border-radius:8px;padding:16px 20px;margin:0 0 30px}
.takeaways h2{font-size:1em;margin:0 0 8px;padding:0}
.takeaways ul{margin:0;padding-left:20px}
.takeaways li{margin:4px 0}
.toc{border:1px solid var(--line);border-radius:8px;padding:14px 20px;margin:0 0 32px;font-size:15px}
.toc b{display:block;font-size:13px;color:var(--muted);margin-bottom:6px;font-weight:500}
.toc ol{margin:0;padding-left:20px}
.toc li{margin:2px 0}
.toc a{text-decoration:none}
table{width:100%;border-collapse:collapse;margin:0 0 1.2em;font-size:15px;display:block;overflow-x:auto}
th,td{border:1px solid var(--line);padding:9px 12px;text-align:left;vertical-align:top}
th{background:var(--soft);font-weight:600}
ul.data{list-style:none;padding:0;margin:0 0 1.2em;font-size:15px}
ul.data li{border-left:2px solid var(--line);padding-left:12px;margin:6px 0;color:#2f3a42}
.faq{border-top:1px solid var(--line);padding-top:6px;margin-top:10px}
.faq h3{font-size:1.02em}
.sources{font-size:14px;color:var(--muted);border-top:1px solid var(--line);margin-top:34px;padding-top:16px}
.sources b{display:block;font-size:13px;margin-bottom:6px;color:var(--fg);font-weight:600}
.sources ul{margin:0;padding-left:18px}
.sources li{margin:3px 0}
.sources li span{color:#98a2ab;font-size:12.5px;margin-left:8px}
sup.cite{font-size:.72em;line-height:0;margin-left:2px}
sup.cite a{color:var(--accent);text-decoration:none;font-weight:600}
.cite-back{color:var(--muted);text-decoration:none;margin-left:6px;font-size:12px}
.cta{border:1px solid var(--line);border-radius:8px;padding:18px 20px;margin:34px 0 0;background:var(--soft)}
.author{display:flex;gap:12px;align-items:center;border-top:1px solid var(--line);margin-top:34px;padding-top:18px;font-size:14px;color:var(--muted)}
footer.site{border-top:1px solid var(--line);padding:26px 0;font-size:13.5px;color:var(--muted)}
footer.site a{color:var(--muted);margin-right:16px;text-decoration:none}
.cards{display:grid;gap:18px}
.card{border:1px solid var(--line);border-radius:10px;padding:18px 20px}
.card h3{margin:0 0 6px;font-size:1.05em}
.card p{margin:0;color:var(--muted);font-size:15px}
.card .tag{font-size:12px;color:var(--accent);border:1px solid var(--line);border-radius:99px;padding:1px 9px;display:inline-block;margin-bottom:8px}
@media(max-width:520px){body{font-size:16px}h1{font-size:1.45em}}

.portal-header .wrap,.hero .wrap,.version-bar .wrap,.portal-footer .wrap{max-width:1180px}
.portal-main{max-width:1180px;margin:0 auto}
.portal-header{background:#121a17;color:#fff;position:sticky;top:0;z-index:20}
.portal-header .wrap{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:14px 20px}
.portal-logo{color:#fff;font-weight:700;font-size:18px;text-decoration:none;letter-spacing:-.01em}
.portal-nav a{color:#c9d6d0;text-decoration:none;margin-left:20px;font-size:14px}
.portal-nav a:hover{color:#fff}
.hero{background:linear-gradient(135deg,#f1f7f4,#e7f1ec);border-bottom:1px solid var(--line);padding:42px 0 30px}
.hero h1{font-size:2em;margin:0 0 10px}
.hero-sub{color:#44524c;max-width:720px;margin:0 0 18px}
.quick-links{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:14px}
.quick{background:#fff;border:1px solid #cfe3da;color:var(--accent);text-decoration:none;padding:7px 14px;border-radius:99px;font-size:14px}
.quick:hover{background:var(--accent);color:#fff}
.hero-meta{color:var(--muted);font-size:13px;margin:0}
.version-bar{background:#fff;border-bottom:1px solid var(--line);padding:12px 0}
.version-bar .wrap{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.version-pill{border:1px solid var(--line);border-radius:99px;padding:5px 12px;text-decoration:none;color:#2c3a34;font-size:13.5px}
.version-pill span{margin-left:6px;color:var(--muted);font-size:12px}
.version-pill:hover{border-color:var(--accent);color:var(--accent)}
.portal-main{padding:30px 20px 70px}
.portal-grid{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:26px}
.portal-col-side{display:flex;flex-direction:column;gap:16px}
.section-head{display:flex;justify-content:space-between;align-items:baseline;margin:26px 0 12px}
.section-head h2{margin:0;font-size:1.2em}
.section-head a{font-size:13px;color:var(--muted);text-decoration:none}
.news-list,.data-list,.post-list{list-style:none;margin:0;padding:0}
.news-list li{display:flex;justify-content:space-between;gap:14px;padding:11px 0;border-bottom:1px solid var(--line)}
.news-list a{color:var(--fg);text-decoration:none;font-weight:500}
.news-list a:hover{color:var(--accent)}
.news-list time{color:var(--muted);font-size:12.5px;white-space:nowrap}
.column-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.column-card{border:1px solid var(--line);border-radius:10px;padding:16px;background:#fff}
.column-head{display:flex;justify-content:space-between;align-items:baseline;gap:10px;margin-bottom:8px}
.column-head h3{margin:0;font-size:1.02em}
.column-head h3 .badge{margin-left:8px;vertical-align:middle}
.column-head a{color:var(--fg);text-decoration:none}
.column-head a:hover{color:var(--accent)}
.mini-list{list-style:none;margin:0 0 10px;padding:0;font-size:13.5px}
.mini-list li{padding:5px 0;border-bottom:1px dashed #edf1ef;display:flex;justify-content:space-between;gap:10px;align-items:center}
.mini-list li:last-child{border-bottom:none}
.mini-list a{color:#2c3a34;text-decoration:none;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.mini-list a:hover{color:var(--accent)}
.mini-list .meta{display:flex;gap:6px;align-items:center;color:var(--muted);font-size:11.5px;white-space:nowrap;flex:0 0 auto}
.more{font-size:13px;color:var(--accent);text-decoration:none}
.portal-col-side .mini-list li{display:block}
.portal-col-side .mini-list .meta{margin-top:3px}
.side-card{border:1px solid var(--line);border-radius:10px;padding:16px;background:#fff}
.side-card h3{margin:0 0 8px;font-size:14px}
.question-list{list-style:none;margin:0;padding:0;font-size:13.5px}
.question-list li{padding:6px 0;border-bottom:1px dashed #edf1ef}
.question-list a{color:#2c3a34;text-decoration:none}
.question-list a:hover{color:var(--accent)}
.data-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}
.data-list li{border:1px solid var(--line);border-radius:8px;padding:9px 12px;font-size:13.5px}
.data-list a{text-decoration:none;color:#2c3a34}
.lead{color:#44524c;font-size:15px;line-height:1.8;max-width:820px}
.portal-crumb{font-size:13px;color:var(--muted);margin-bottom:18px}
.portal-crumb a{color:var(--muted);text-decoration:none}
.chips-row{display:flex;gap:8px;flex-wrap:wrap;margin:18px 0 6px}
.chip-link{border:1px solid var(--line);border-radius:99px;padding:5px 12px;text-decoration:none;color:#2c3a34;font-size:13px;background:#fff}
.chip-link span{color:var(--muted);margin-left:6px;font-size:11.5px}
.chip-link:hover{border-color:var(--accent);color:var(--accent)}
.post-item{border-bottom:1px solid var(--line);padding:14px 0}
.post-title a{color:var(--fg);text-decoration:none;font-weight:600;font-size:1.02em}
.post-title a:hover{color:var(--accent)}
.post-desc{margin:5px 0 7px;color:var(--muted);font-size:13.5px}
.post-meta{display:flex;gap:8px;align-items:center;color:var(--muted);font-size:12px}
.portal-footer{border-top:1px solid var(--line);padding:26px 0;font-size:13px;color:var(--muted);background:#fff}
.footer-links a{color:var(--muted);text-decoration:none;margin-right:16px}
@media(max-width:900px){
  .portal-grid{grid-template-columns:1fr}
  .column-grid{grid-template-columns:1fr}
  .data-list{grid-template-columns:1fr}
  .portal-nav{display:none}
  .hero h1{font-size:1.6em}
}