/* wanbozhuli.com - data grandstand layout: persistent left index rail + content corridor */
:root{
  --ink:#14181c;
  --ink-soft:#2b333a;
  --paper:#f4f6f3;
  --paper-2:#eaece6;
  --green:#0d3b33;
  --green-2:#145244;
  --amber:#d99b3d;
  --line:#cfd6cd;
  --muted:#5d6a63;
  --radius:4px;
  --maxw:1220px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink-soft);
  font-family:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
}
a{color:var(--green-2);text-decoration:none}
a:hover{color:var(--amber)}
img{max-width:100%;height:auto;display:block}
h1,h2,h3,h4{color:var(--ink);line-height:1.3;margin:0 0 .6em}
h1{font-size:clamp(1.6rem,3.4vw,2.35rem);letter-spacing:-.01em}
h2{font-size:clamp(1.25rem,2.2vw,1.55rem);margin-top:1.8em}
h3{font-size:1.1rem}
p{margin:0 0 1.05em}
ul,ol{padding-left:1.25em}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 20px}

/* header */
.site-head{background:var(--green);color:#eef3ef;border-bottom:3px solid var(--amber);position:sticky;top:0;z-index:40}
.site-head .bar{display:flex;align-items:center;gap:18px;min-height:66px}
.brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;letter-spacing:.02em;flex:0 0 auto}
.brand img{width:34px;height:34px;border-radius:6px}
.brand span{font-size:1.02rem}
.nav{margin-left:auto;display:flex;align-items:center;gap:2px}
.nav a{color:#dfe8e2;padding:8px 11px;border-radius:var(--radius);font-size:.94rem;white-space:nowrap}
.nav a:hover,.nav a.is-active{background:rgba(255,255,255,.12);color:#fff}
.burger{display:none;margin-left:auto;background:none;border:1px solid rgba(255,255,255,.45);color:#fff;border-radius:var(--radius);padding:7px 12px;font-size:.9rem}
@media (max-width:900px){
  .nav{display:none;position:absolute;left:0;right:0;top:100%;background:var(--green-2);flex-direction:column;align-items:stretch;padding:8px 12px 14px;border-bottom:3px solid var(--amber)}
  .nav.is-open{display:flex}
  .nav a{padding:12px 10px;border-bottom:1px solid rgba(255,255,255,.12)}
  .burger{display:block}
}

/* layout shell */
.shell{max-width:var(--maxw);margin:0 auto;padding:26px 20px 60px}
.dual{display:grid;grid-template-columns:212px minmax(0,1fr);gap:34px;align-items:start}
.rail{position:sticky;top:88px;border-left:3px solid var(--green);padding-left:14px}
.rail h2{font-size:.82rem;letter-spacing:.12em;color:var(--muted);margin:0 0 10px;font-weight:600}
.rail ul{list-style:none;margin:0;padding:0}
.rail li{margin-bottom:2px}
.rail a{display:block;padding:6px 8px;font-size:.92rem;color:var(--ink-soft);border-radius:var(--radius)}
.rail a:hover,.rail a.is-active{background:#e3e8df;color:var(--green)}
.rail .rail-note{font-size:.8rem;color:var(--muted);margin-top:14px;border-top:1px dashed var(--line);padding-top:10px}
@media (max-width:900px){
  .dual{grid-template-columns:1fr;gap:20px}
  .rail{position:static;border-left:0;border-top:1px solid var(--line);padding:12px 0 0}
  .rail ul{display:flex;flex-wrap:wrap;gap:6px}
  .rail li{margin:0}
  .rail a{background:#e6eae2;padding:8px 12px}
}

/* home hero: split, no centred hero */
.hero-split{display:grid;grid-template-columns:1.05fr .95fr;gap:0;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;margin-bottom:34px}
.hero-split .copy{padding:34px 32px;align-self:center}
.hero-split .copy p{max-width:46ch;color:var(--muted);margin-bottom:1.3em}
.hero-split .viz{position:relative;min-height:260px}
.hero-split .viz img{width:100%;height:100%;object-fit:cover}
.hero-kicker{display:inline-block;font-size:.78rem;letter-spacing:.16em;color:var(--green-2);font-weight:600;margin-bottom:10px}
.btn{display:inline-block;background:var(--green);color:#fff;padding:11px 22px;border-radius:var(--radius);font-weight:600;font-size:.95rem}
.btn:hover{background:var(--green-2);color:#fff}
.btn.ghost{background:transparent;color:var(--green);border:1px solid var(--green);margin-left:8px}
.btn.ghost:hover{background:var(--green);color:#fff}
@media (max-width:820px){
  .hero-split{grid-template-columns:1fr}
  .hero-split .viz{order:-1;min-height:200px}
  .btn.ghost{margin-left:0;margin-top:10px}
}

/* section heads */
.sec{margin:44px 0}
.sec-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;border-bottom:2px solid var(--green);padding-bottom:8px;margin-bottom:20px}
.sec-head h2{margin:0;font-size:1.2rem}
.sec-head a{font-size:.88rem;color:var(--muted)}

/* data strip (numbers instead of cards) */
.datastrip{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line);border-left:1px solid var(--line);background:#fff}
.datastrip div{border-right:1px solid var(--line);border-bottom:1px solid var(--line);padding:16px 18px}
.datastrip strong{display:block;font-size:1.5rem;color:var(--green);font-variant-numeric:tabular-nums}
.datastrip span{font-size:.84rem;color:var(--muted)}
@media (max-width:760px){.datastrip{grid-template-columns:repeat(2,1fr)}}

/* corridor list: article rows with thumbnail */
.corridor{display:grid;gap:0;border-top:1px solid var(--line)}
.corridor .row{display:grid;grid-template-columns:104px minmax(0,1fr);gap:18px;padding:18px 0;border-bottom:1px solid var(--line)}
.corridor .row img{width:104px;height:74px;object-fit:cover;border-radius:var(--radius)}
.corridor .row h3{margin:0 0 4px;font-size:1.03rem}
.corridor .row p{margin:0;font-size:.9rem;color:var(--muted)}
.corridor .meta{font-size:.78rem;color:#7b857e;margin-top:6px;letter-spacing:.02em}
@media (max-width:600px){
  .corridor .row{grid-template-columns:1fr}
  .corridor .row img{width:100%;height:170px}
}

/* two-up features */
.twoup{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.feat{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column}
.feat img{width:100%;height:190px;object-fit:cover}
.feat .body{padding:16px 18px 20px}
.feat h3{margin:0 0 6px}
.feat p{margin:0;font-size:.92rem;color:var(--muted)}
@media (max-width:760px){.twoup{grid-template-columns:1fr}}

/* quote band */
.band{background:var(--green);color:#eef3ef;padding:30px 32px;border-radius:var(--radius);display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:26px;align-items:center}
.band blockquote{margin:0;font-size:1.12rem;line-height:1.7;color:#f2f6f2}
.band cite{display:block;margin-top:12px;font-style:normal;font-size:.86rem;color:#b9cdc4}
.band img{border-radius:var(--radius)}
@media (max-width:760px){.band{grid-template-columns:1fr;padding:24px}}

/* tables */
table{width:100%;border-collapse:collapse;background:#fff;font-size:.92rem;margin:0 0 1.4em}
caption{caption-side:top;text-align:left;font-size:.84rem;color:var(--muted);padding-bottom:8px}
th,td{padding:10px 12px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
th{background:#e7ebe3;color:var(--green);font-weight:600;font-size:.86rem;letter-spacing:.03em}
td.num{font-variant-numeric:tabular-nums;white-space:nowrap}

/* category page */
.cat-head{background:#fff;border:1px solid var(--line);border-left:5px solid var(--amber);padding:22px 24px;border-radius:var(--radius);margin-bottom:26px}
.cat-head h1{margin-bottom:8px}
.cat-head p{margin:0;color:var(--muted);max-width:70ch}
.cat-list{display:grid;gap:0;border-top:1px solid var(--line)}
.cat-list .item{display:grid;grid-template-columns:16px minmax(0,1fr);gap:14px;padding:16px 0;border-bottom:1px solid var(--line)}
.cat-list .item::before{content:"";width:6px;height:6px;margin-top:12px;background:var(--amber);border-radius:50%}
.cat-list h2{font-size:1.05rem;margin:0 0 4px}
.cat-list p{margin:0;font-size:.9rem;color:var(--muted)}
.cat-list .meta{font-size:.78rem;color:#7b857e;margin-top:5px}

/* article page */
.crumb{font-size:.84rem;color:var(--muted);margin-bottom:16px}
.crumb a{color:var(--green-2)}
.art-grid{display:grid;grid-template-columns:minmax(0,1fr) 288px;gap:38px;align-items:start}
.art-body{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px 34px 36px}
.art-body h1{margin-bottom:10px}
.art-meta{font-size:.84rem;color:var(--muted);border-bottom:1px solid var(--line);padding-bottom:14px;margin-bottom:22px}
.art-meta span+span::before{content:"/";margin:0 8px;color:#b6c0b8}
.art-body figure{margin:0 0 22px}
.art-body figure img{width:100%;border-radius:var(--radius)}
.art-body figcaption{font-size:.8rem;color:var(--muted);margin-top:6px}
.art-body h2{border-left:4px solid var(--amber);padding-left:12px}
.art-body ul li{margin-bottom:.4em}
.callout{background:#f0f3ec;border-left:3px solid var(--green);padding:14px 18px;margin:0 0 1.4em;font-size:.94rem}
.callout strong{color:var(--green)}
.back-cat{display:inline-block;margin-top:22px;font-size:.9rem;border-top:1px solid var(--line);padding-top:14px;width:100%}
.side{display:grid;gap:18px}
.side .card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:16px 18px}
.side .card h2{font-size:.95rem;margin:0 0 10px;color:var(--green);letter-spacing:.02em}
.side .card ul{list-style:none;margin:0;padding:0}
.side .card li{padding:7px 0;border-bottom:1px dashed var(--line);font-size:.9rem}
.side .card li:last-child{border-bottom:0}
.side .card li a{display:block}
.side .card p{font-size:.86rem;color:var(--muted);margin:0}
.side .tags a{display:inline-block;background:#e7ebe3;border-radius:var(--radius);padding:4px 9px;margin:0 6px 6px 0;font-size:.82rem;color:var(--green)}
@media (max-width:900px){
  .art-grid{grid-template-columns:1fr;gap:24px}
  .art-body{padding:22px 18px 26px}
  .side{grid-template-columns:1fr}
}

/* footer */
.site-foot{background:#0f2a24;color:#c6d4cc;border-top:3px solid var(--amber);padding:34px 0 22px;font-size:.88rem}
.foot-grid{display:grid;grid-template-columns:1.3fr .9fr 1.2fr;gap:26px}
.site-foot h2{color:#eef3ef;font-size:.95rem;margin:0 0 10px;letter-spacing:.04em}
.site-foot a{color:#c6d4cc}
.site-foot a:hover{color:var(--amber)}
.site-foot ul{list-style:none;padding:0;margin:0}
.site-foot li{margin-bottom:6px}
.foot-legal{border-top:1px solid rgba(255,255,255,.14);margin-top:24px;padding-top:16px;font-size:.8rem;color:#9db0a7;display:flex;flex-wrap:wrap;gap:6px 18px}
@media (max-width:820px){.foot-grid{grid-template-columns:1fr;gap:18px}}

/* misc */
.lead{font-size:1.02rem;color:var(--ink-soft)}
.small{font-size:.85rem;color:var(--muted)}
.cards-3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
@media (max-width:820px){.cards-3{grid-template-columns:1fr}}
.tag-list{list-style:none;padding:0;margin:0;display:flex;flex-wrap:wrap;gap:8px}
.tag-list a{background:#fff;border:1px solid var(--line);padding:7px 12px;border-radius:var(--radius);font-size:.88rem}
@media (prefers-reduced-motion:no-preference){
  .feat,.corridor .row{transition:transform .18s ease}
  .feat:hover{transform:translateY(-2px)}
}