:root{
  --bg:#0c1016;
  --bg-2:#121821;
  --bg-3:#18202b;
  --line:rgba(238,242,247,.12);
  --ink:#eef2f7;
  --ink-dim:#a8b4c2;
  --accent:#3d7bff;
  --accent-soft:rgba(61,123,255,.14);
  --radius:14px;
  --pad:clamp(18px,4vw,40px);
  --maxw:1280px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Heiti SC",system-ui,sans-serif;
  font-size:16.5px;line-height:1.78;letter-spacing:.01em;
}
img{max-width:100%;height:auto;display:block}
a{color:#b9cdff;text-decoration:none}
a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}
h1,h2,h3,h4{margin:0;font-weight:650;line-height:1.28;letter-spacing:0}
p{margin:0 0 1.05em}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px}

/* ---------- chrome ---------- */
.site-head{
  border-bottom:1px solid var(--line);
  background:linear-gradient(180deg,#0e141c,#0b0f15);
  position:sticky;top:0;z-index:60;
}
.head-inner{
  max-width:var(--maxw);margin:0 auto;padding:12px var(--pad);
  display:flex;align-items:center;gap:22px;
}
.brand{display:flex;align-items:center;gap:11px;flex:0 0 auto}
.brand img{width:38px;height:38px;border-radius:10px;border:1px solid var(--line)}
.brand-txt{display:flex;flex-direction:column;line-height:1.2}
.brand-name{font-weight:700;font-size:16px;color:var(--ink)}
.brand-sub{font-size:11.5px;color:var(--ink-dim);letter-spacing:.14em}
.nav{display:flex;flex-wrap:wrap;gap:6px;margin-left:auto}
.nav a{
  display:inline-block;padding:7px 13px;border-radius:999px;font-size:14.5px;
  color:var(--ink-dim);border:1px solid transparent;white-space:nowrap;
}
.nav a:hover{color:var(--ink);background:var(--bg-3);text-decoration:none}
.nav a.is-active{color:#fff;background:var(--accent-soft);border-color:rgba(61,123,255,.42)}
.menu-btn{
  display:none;margin-left:auto;background:var(--bg-3);color:var(--ink);
  border:1px solid var(--line);border-radius:10px;padding:9px 13px;font-size:14px;
  cursor:pointer;min-height:44px;
}
.topbar-note{font-size:12.5px;color:var(--ink-dim);border-left:1px solid var(--line);padding-left:22px}

/* ---------- layout shells ---------- */
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 var(--pad)}
.rail-layout{
  max-width:var(--maxw);margin:0 auto;padding:30px var(--pad) 8px;
  display:grid;grid-template-columns:236px minmax(0,1fr);
  gap:clamp(20px,3.2vw,48px);align-items:start;
}
.rail{
  position:sticky;top:84px;border-left:2px solid var(--accent);
  padding:4px 0 4px 16px;
}
.rail h3{font-size:13px;letter-spacing:.18em;color:var(--ink-dim);margin-bottom:14px;font-weight:600}
.rail ul{list-style:none;margin:0;padding:0;display:grid;gap:11px}
.rail li a{font-size:14.5px;color:var(--ink-dim);display:block;line-height:1.5}
.rail li a:hover{color:#fff}
.rail-meta{margin-top:22px;font-size:12.5px;color:var(--ink-dim);line-height:1.7}

/* ---------- split opening ---------- */
.split{
  display:grid;grid-template-columns:minmax(0,1.02fr) minmax(0,1fr);
  gap:clamp(18px,3vw,42px);align-items:center;
  padding-bottom:34px;border-bottom:1px solid var(--line);
}
.split-txt h1{font-size:clamp(27px,3.3vw,44px);margin-bottom:16px}
.kicker{font-size:12.5px;letter-spacing:.2em;color:var(--accent);margin-bottom:14px;font-weight:600}
.lede{color:var(--ink-dim);font-size:16.5px;max-width:46ch}
.split-media{position:relative}
.split-media img{border-radius:var(--radius);border:1px solid var(--line)}
.media-cap{
  position:absolute;right:12px;bottom:-13px;background:#0a0e14;
  border:1px solid var(--line);border-radius:999px;padding:5px 13px;
  font-size:12px;color:var(--ink-dim);
}

/* ---------- quick strip ---------- */
.strip{padding:30px 0 26px;border-bottom:1px solid var(--line)}
.strip-head{display:flex;align-items:baseline;gap:14px;margin-bottom:18px}
.strip-head h2{font-size:20px}
.strip-head span{font-size:12.5px;color:var(--ink-dim);letter-spacing:.16em}
.strip-row{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:2px;background:var(--line);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.strip-cell{background:var(--bg-2);padding:18px 16px}
.strip-cell b{display:block;font-size:13px;color:var(--accent);letter-spacing:.14em;font-weight:600;margin-bottom:8px}
.strip-cell h3{font-size:15.5px;margin-bottom:7px}
.strip-cell p{margin:0;font-size:13.5px;color:var(--ink-dim);line-height:1.65}

/* ---------- offset duo ---------- */
.duo{padding:34px 0 24px;border-bottom:1px solid var(--line)}
.duo-head{margin-bottom:22px;max-width:60ch}
.duo-head h2{font-size:clamp(22px,2.5vw,30px);margin-bottom:10px}
.duo-head p{color:var(--ink-dim);margin:0}
.card-main{display:grid;grid-template-columns:minmax(0,1.18fr) minmax(0,1fr);gap:clamp(16px,2.4vw,30px);align-items:center}
.card-main img{border-radius:var(--radius);border:1px solid var(--line)}
.card-main .card-body{padding:4px 0}
.tagline{font-size:12px;letter-spacing:.16em;color:var(--ink-dim);margin-bottom:10px}
.card-main h3{font-size:22px;margin-bottom:12px}
.card-main p{color:var(--ink-dim);font-size:15.5px}
.readmore{display:inline-block;font-size:14px;color:#cfdcff;border-bottom:1px solid rgba(207,220,255,.5);padding-bottom:2px}
.card-pair{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin-top:26px;padding-left:clamp(0px,6vw,120px)}
.mini-card{background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.mini-card img{border-radius:0;border-bottom:1px solid var(--line)}
.mini-card div{padding:14px 16px}
.mini-card h4{font-size:15.5px;margin-bottom:6px;line-height:1.45}
.mini-card p{margin:0;font-size:13px;color:var(--ink-dim);line-height:1.6}

/* ---------- 6x2 category grid ---------- */
.catgrid{padding:32px 0 22px;border-bottom:1px solid var(--line)}
.catgrid h2{font-size:20px;margin-bottom:6px}
.catgrid-note{font-size:13px;color:var(--ink-dim);margin-bottom:18px}
.catgrid-cells{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.cat-cell{display:block;background:var(--bg-2);border:1px solid var(--line);border-radius:12px;padding:16px 16px 14px;transition:border-color .16s}
.cat-cell:hover{border-color:rgba(61,123,255,.55);text-decoration:none}
.cat-cell i{font-style:normal;font-size:11.5px;color:var(--accent);letter-spacing:.2em;display:block;margin-bottom:9px}
.cat-cell h3{font-size:16.5px;margin-bottom:6px;color:var(--ink)}
.cat-cell p{margin:0;font-size:13px;color:var(--ink-dim);line-height:1.6}

/* ---------- timeline ---------- */
.timeline{padding:34px 0 24px;border-bottom:1px solid var(--line)}
.timeline h2{font-size:22px;margin-bottom:22px}
.tl{position:relative;margin-left:6px;padding-left:24px;border-left:1px solid var(--line)}
.tl-item{position:relative;padding:0 0 26px}
.tl-item::before{content:"";position:absolute;left:-30px;top:9px;width:9px;height:9px;border-radius:50%;background:var(--accent)}
.tl-date{font-size:12px;letter-spacing:.1em;color:var(--ink-dim);margin-bottom:6px}
.tl-item h3{font-size:17px;margin-bottom:7px}
.tl-item p{margin:0;font-size:14px;color:var(--ink-dim);line-height:1.7}
.tl-item a{font-size:14px}

/* ---------- path steps ---------- */
.pathsteps{padding:32px 0 22px;border-bottom:1px solid var(--line)}
.path-inner{display:grid;grid-template-columns:minmax(0,.62fr) minmax(0,1fr);gap:clamp(18px,3vw,40px);align-items:start}
.path-inner h2{font-size:21px;margin-bottom:12px}
.path-inner p{color:var(--ink-dim);font-size:15px}
.steps{display:grid;gap:2px;background:var(--line);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.step{background:var(--bg-2);padding:15px 18px;display:flex;gap:14px;align-items:flex-start}
.step em{font-style:normal;font-size:12px;font-weight:700;color:var(--accent);min-width:22px;letter-spacing:.06em}
.step div h4{font-size:15px;margin-bottom:4px}
.step div p{margin:0;font-size:13px;color:var(--ink-dim);line-height:1.6}

/* ---------- notice + metrics ---------- */
.notice{padding:30px 0 26px;border-bottom:1px solid var(--line)}
.notice-box{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:20px;background:var(--bg-2);border:1px solid var(--line);border-left:3px solid var(--accent);border-radius:var(--radius);padding:24px}
.notice-box h2{font-size:19px;margin-bottom:10px}
.notice-box p{color:var(--ink-dim);font-size:14.5px;line-height:1.75}
.notice-box p:last-child{margin:0}
.metrics{display:grid;gap:14px;align-content:start}
.metrics div{border-top:1px solid var(--line);padding-top:11px}
.metrics b{display:block;font-size:19px;color:var(--ink);line-height:1.3}
.metrics span{font-size:12.5px;color:var(--ink-dim)}

/* ---------- faq ---------- */
.faq{padding:32px 0 14px}
.faq h2{font-size:22px;margin-bottom:16px}
.faq-list{display:grid;gap:10px;max-width:80ch}
.faq-item{border:1px solid var(--line);border-radius:12px;background:var(--bg-2);padding:16px 18px}
.faq-item h3{font-size:15.5px;margin-bottom:6px}
.faq-item p{margin:0;font-size:14px;color:var(--ink-dim);line-height:1.72}

/* ---------- section pages ---------- */
.page-head{max-width:var(--maxw);margin:0 auto;padding:34px var(--pad) 20px;border-bottom:1px solid var(--line)}
.crumb{font-size:12.5px;color:var(--ink-dim);margin-bottom:14px}
.crumb a{color:var(--ink-dim)}
.crumb a:hover{color:#fff}
.page-head h1{font-size:clamp(24px,2.8vw,34px);margin-bottom:12px}
.page-head p{color:var(--ink-dim);margin:0;max-width:70ch}
.list-layout{max-width:var(--maxw);margin:0 auto;padding:26px var(--pad) 10px}
.ledger{display:grid;gap:0;border-top:1px solid var(--line)}
.ledger-item{display:grid;grid-template-columns:112px minmax(0,1fr);gap:20px;padding:22px 0;border-bottom:1px solid var(--line)}
.ledger-item img{width:112px;aspect-ratio:1/1;object-fit:cover;border-radius:10px;border:1px solid var(--line)}
.ledger-item h3{font-size:17.5px;margin-bottom:7px}
.ledger-item h3 a{color:var(--ink)}
.ledger-item h3 a:hover{color:#fff}
.ledger-item p{margin:0 0 8px;font-size:14px;color:var(--ink-dim);line-height:1.68}
.ledger-item .meta{font-size:12.5px;color:var(--ink-dim);letter-spacing:.04em}

/* ---------- article ---------- */
.art-layout{max-width:var(--maxw);margin:0 auto;padding:28px var(--pad) 20px;display:grid;grid-template-columns:minmax(0,1fr) 312px;gap:clamp(20px,3.4vw,52px);align-items:start}
.art-body{min-width:0}
.art-body h1{font-size:clamp(24px,2.9vw,36px);margin-bottom:14px}
.art-byline{display:flex;flex-wrap:wrap;gap:10px 18px;align-items:center;font-size:13px;color:var(--ink-dim);padding-bottom:18px;border-bottom:1px solid var(--line);margin-bottom:22px}
.art-byline .who{color:var(--ink)}
.art-lead{font-size:17px;color:#dfe6f0;margin-bottom:22px}
.art-body h2{font-size:19.5px;margin:30px 0 12px;padding-left:12px;border-left:2px solid var(--accent)}
.art-body h3{font-size:16.5px;margin:22px 0 9px;color:#dfe6f0}
.art-body p{font-size:16px;color:#cdd7e3}
.art-body ul,.art-body ol{color:#cdd7e3;padding-left:1.35em;margin:0 0 1.05em}
.art-body li{margin-bottom:.42em}
.art-figure{margin:24px 0 26px}
.art-figure img{border-radius:12px;border:1px solid var(--line)}
.art-figure figcaption{font-size:12.5px;color:var(--ink-dim);margin-top:8px;line-height:1.6}
.art-side{position:sticky;top:84px;display:grid;gap:16px}
.side-card{background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius);padding:18px}
.side-card h2{font-size:14px;letter-spacing:.14em;color:var(--ink-dim);margin-bottom:12px;font-weight:600}
.side-card ul{list-style:none;margin:0;padding:0;display:grid;gap:11px}
.side-card li a{font-size:14px;color:#cfdcff;line-height:1.55;display:block}
.side-card li span{display:block;font-size:12px;color:var(--ink-dim);margin-top:2px}
.side-facts{font-size:13px;color:var(--ink-dim);line-height:1.8}
.side-facts strong{color:var(--ink);font-weight:600}
.backlink{margin-top:28px;padding-top:18px;border-top:1px solid var(--line);font-size:14px}
.backlink a{color:#cfdcff}

/* ---------- footer ---------- */
.site-foot{border-top:1px solid var(--line);background:#0a0e13;margin-top:30px}
.foot-inner{max-width:var(--maxw);margin:0 auto;padding:32px var(--pad) 30px;display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);gap:26px}
.foot-brand{display:flex;gap:12px;align-items:flex-start;margin-bottom:14px}
.foot-brand img{width:34px;height:34px;border-radius:9px;border:1px solid var(--line)}
.foot-brand b{font-size:15px;color:var(--ink)}
.foot-note{font-size:13px;color:var(--ink-dim);line-height:1.78;max-width:44ch}
.foot-links{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:6px 18px;font-size:13.5px}
.foot-links a{color:var(--ink-dim)}
.foot-links a:hover{color:#fff}
.foot-legal{border-top:1px solid var(--line);margin-top:22px;padding-top:16px;font-size:12.5px;color:#8d9aa8;line-height:1.9}
.foot-legal span{display:inline-block;margin-right:16px}
.foot-contact{font-size:13px;color:var(--ink-dim);line-height:1.9}
.foot-contact b{display:block;font-size:12px;letter-spacing:.14em;color:#8d9aa8;margin-bottom:6px;font-weight:600}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .rail-layout{grid-template-columns:1fr;gap:26px}
  .rail{position:static;border-left:none;border-top:2px solid var(--accent);padding:14px 0 0}
  .rail ul{grid-template-columns:repeat(2,minmax(0,1fr))}
  .rail-meta{display:none}
  .art-layout{grid-template-columns:1fr}
  .art-side{position:static}
  .topbar-note{display:none}
}
@media (max-width:768px){
  body{font-size:16px;line-height:1.76}
  .nav{display:none;width:100%;order:4}
  .nav.open{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;margin:10px 0 4px}
  .head-inner{flex-wrap:wrap;gap:12px;padding:10px var(--pad)}
  .menu-btn{display:block}
  .split{grid-template-columns:1fr}
  .strip-row{grid-template-columns:1fr}
  .card-main{grid-template-columns:1fr}
  .card-pair{grid-template-columns:1fr;padding-left:0}
  .catgrid-cells{grid-template-columns:1fr}
  .path-inner{grid-template-columns:1fr}
  .notice-box{grid-template-columns:1fr}
  .ledger-item{grid-template-columns:1fr;gap:12px}
  .ledger-item img{width:100%;aspect-ratio:16/10}
  .foot-inner{grid-template-columns:1fr;padding:26px var(--pad)}
  .art-body p,.lede,.page-head p{font-size:16px}
  .faq-list{max-width:none}
  .rail-layout,.list-layout,.art-layout,.page-head{padding-left:var(--pad);padding-right:var(--pad)}
}