:root{
  --navy:#1d3c6e;
  --navy-deep:#142b52;
  --navy-soft:#2c4f84;
  --gold:#c8963f;
  --gold-soft:#e6c98b;
  --ink:#1b2330;
  --body:#394456;
  --muted:#6b7586;
  --line:#dfe4ec;
  --paper:#f7f8fa;
  --white:#ffffff;
  --rail:264px;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  color:var(--body);
  background:var(--paper);
  font-size:16px;
  line-height:1.75;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--navy-soft);text-decoration:none;}
a:hover{color:var(--navy-deep);}
h1,h2,h3,h4{color:var(--ink);line-height:1.35;margin:0;}
h1{font-size:clamp(1.5rem,3vw,2.1rem);letter-spacing:-0.01em;}
h2{font-size:1.16rem;}
h3{font-size:1rem;}

/* ---------- shell ---------- */
.topbar{
  background:var(--navy-deep);
  color:#cfd8e6;
  font-size:.78rem;
}
.topbar-inner{
  max-width:1240px;margin:0 auto;padding:.4rem 1.25rem;
  display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap;
}
.topbar-inner span{letter-spacing:.02em;}

.site-head{
  background:var(--white);
  border-bottom:1px solid var(--line);
  position:sticky;top:0;z-index:20;
}
.site-head-inner{
  max-width:1240px;margin:0 auto;padding:.7rem 1.25rem;
  display:flex;align-items:center;gap:.9rem;
}
.brand{
  display:flex;align-items:center;gap:.6rem;
  color:var(--ink);font-weight:700;font-size:1.05rem;letter-spacing:.04em;
  flex:0 0 auto;
}
.brand img{width:38px;height:38px;border-radius:8px;}
.brand span small{
  display:block;font-weight:400;font-size:.68rem;letter-spacing:.14em;
  color:var(--muted);text-transform:uppercase;
}
.nav{
  display:flex;align-items:center;gap:.2rem;flex:1 1 auto;
  overflow-x:auto;scrollbar-width:none;
}
.nav::-webkit-scrollbar{display:none;}
.nav a{
  white-space:nowrap;padding:.42rem .7rem;border-radius:4px;
  font-size:.9rem;color:var(--body);border-bottom:2px solid transparent;
}
.nav a:hover{background:#f0f3f8;}
.nav a.is-active{color:var(--navy);font-weight:700;border-bottom-color:var(--gold);}
.head-utils{display:flex;align-items:center;gap:.5rem;flex:0 0 auto;}
.head-utils .note{font-size:.75rem;color:var(--muted);}
.menu-btn{
  display:none;background:var(--navy);color:#fff;border:0;border-radius:6px;
  padding:.5rem .7rem;font-size:.85rem;cursor:pointer;
}

/* ---------- layout: left rail + main column ---------- */
.wrap{
  max-width:1240px;margin:0 auto;padding:1.6rem 1.25rem 3rem;
  display:grid;grid-template-columns:var(--rail) minmax(0,1fr);gap:2rem;
  align-items:start;
}
.rail{position:sticky;top:76px;}
.rail-card{
  background:var(--white);border:1px solid var(--line);border-radius:10px;
  padding:1rem 1rem 1.1rem;
}
.rail-card h2{
  font-size:.78rem;letter-spacing:.16em;color:var(--muted);
  text-transform:uppercase;margin-bottom:.6rem;font-weight:600;
}
.rail-index{list-style:none;margin:0;padding:0;}
.rail-index li{margin-bottom:.15rem;}
.rail-index a{
  display:flex;gap:.5rem;align-items:baseline;
  padding:.35rem .4rem;border-radius:5px;font-size:.86rem;color:var(--body);
  border-left:2px solid transparent;
}
.rail-index a:hover{background:#f2f5f9;border-left-color:var(--gold-soft);}
.rail-index a.is-active{background:#eff2f8;border-left-color:var(--gold);color:var(--navy);font-weight:600;}
.rail-index em{font-style:normal;color:var(--muted);font-size:.74rem;margin-left:auto;}

.rail-note{
  margin-top:.9rem;border-top:1px solid var(--line);padding-top:.85rem;
  font-size:.8rem;color:var(--muted);line-height:1.65;
}
.rail-note strong{color:var(--navy);display:block;margin-bottom:.2rem;font-size:.82rem;}

.main-col{min-width:0;}

/* ---------- pieces ---------- */
.crumbs{
  font-size:.8rem;color:var(--muted);margin-bottom:1rem;
  display:flex;flex-wrap:wrap;gap:.35rem;align-items:center;
}
.crumbs a{color:var(--muted);}
.crumbs a:hover{color:var(--navy);}
.crumbs span.sep{color:#c3cad6;}

.lede{
  display:grid;grid-template-columns:1.05fr .95fr;gap:1.6rem;align-items:center;
  background:var(--white);border:1px solid var(--line);border-radius:12px;
  padding:1.6rem;margin-bottom:1.5rem;
}
.lede h1{margin-bottom:.7rem;}
.lede p{color:var(--body);margin:0 0 .9rem;font-size:.94rem;}
.lede p.goldline{
  border-left:3px solid var(--gold);padding-left:.7rem;
  color:var(--navy);font-size:.86rem;background:#fbf7ef;
}
.lede-media img{border-radius:10px;aspect-ratio:4/3;object-fit:cover;width:100%;}
.lede-links{display:flex;gap:.6rem;flex-wrap:wrap;font-size:.84rem;}
.lede-links a{
  padding:.4rem .8rem;border:1px solid var(--line);border-radius:4px;
  background:#f9fafc;color:var(--navy);
}
.lede-links a:hover{background:var(--navy);color:#fff;border-color:var(--navy);}

.block{margin-bottom:2rem;}
.block-head{
  display:flex;align-items:baseline;justify-content:space-between;gap:1rem;
  border-bottom:1px solid var(--line);padding-bottom:.5rem;margin-bottom:1rem;
}
.block-head h2{font-size:1.05rem;}
.block-head h2:after{
  content:"";display:inline-block;width:26px;height:2px;background:var(--gold);
  margin-left:.5rem;vertical-align:middle;
}
.block-head a{font-size:.78rem;color:var(--muted);}
.block-head a:hover{color:var(--navy);}

.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1.1rem;}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1.1rem;}
.grid-bento{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  grid-auto-rows:minmax(0,auto);gap:1rem;
}
.bento-a{grid-column:span 2;grid-row:span 2;}
.bento-b{grid-column:span 2;}
.bento-c,.bento-d{grid-column:span 1;}

.card{
  background:var(--white);border:1px solid var(--line);border-radius:10px;
  overflow:hidden;display:flex;flex-direction:column;
}
.card img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.card-body{padding:.85rem 1rem 1rem;}
.card-body h3{font-size:.98rem;margin-bottom:.35rem;}
.card-body h3 a{color:var(--ink);}
.card-body h3 a:hover{color:var(--navy);}
.card-body p{margin:0;font-size:.83rem;color:var(--muted);line-height:1.6;}
.card-meta{
  display:flex;gap:.55rem;font-size:.72rem;color:#8a93a3;
  padding:.6rem 1rem .8rem;border-top:1px dashed var(--line);margin-top:auto;
}

.rowlist{list-style:none;margin:0;padding:0;}
.rowlist li{
  display:grid;grid-template-columns:74px minmax(0,1fr) auto;
  gap:1rem;align-items:baseline;padding:.7rem 0;
  border-bottom:1px solid var(--line);
}
.rowlist li:first-child{padding-top:0;}
.rowlist .rl-cat{font-size:.72rem;color:var(--gold);letter-spacing:.04em;}
.rowlist .rl-title{color:var(--ink);font-size:.93rem;}
.rowlist .rl-title:hover{color:var(--navy-soft);}
.rowlist .rl-meta{font-size:.72rem;color:#8a93a3;white-space:nowrap;}

.split-strip{
  background:var(--navy);color:#e8eef7;border-radius:12px;
  padding:1.5rem 1.6rem;display:grid;grid-template-columns:1fr 1fr;gap:1.6rem;
}
.split-strip h2{color:#fff;font-size:1.1rem;margin-bottom:.5rem;}
.split-strip p{margin:0;font-size:.86rem;color:#c6d3e6;}
.split-strip ul{list-style:none;margin:0;padding:0;font-size:.85rem;}
.split-strip li{padding:.45rem 0;border-top:1px solid rgba(255,255,255,.13);}
.split-strip li a{color:#e8eef7;}
.split-strip li a:hover{color:var(--gold-soft);}

.stat-row{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1rem;
}
.stat{
  background:var(--white);border:1px solid var(--line);border-radius:10px;
  padding:1rem 1.1rem;border-top:3px solid var(--navy-soft);
}
.stat b{display:block;color:var(--navy);font-size:1.25rem;letter-spacing:-.01em;}
.stat span{font-size:.78rem;color:var(--muted);}

.note-band{
  border:1px solid var(--gold-soft);background:#fdf9ef;border-radius:10px;
  padding:1.1rem 1.2rem;font-size:.86rem;color:#5e4d28;
}
.note-band strong{color:#3d3218;}

/* ---------- category page ---------- */
.cat-head{
  background:var(--white);border:1px solid var(--line);border-radius:12px;
  padding:1.4rem 1.5rem;margin-bottom:1.4rem;
  display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:1.4rem;align-items:center;
}
.cat-head h1{margin-bottom:.5rem;}
.cat-head p{margin:0;font-size:.88rem;color:var(--muted);}
.cat-head img{border-radius:9px;aspect-ratio:16/10;object-fit:cover;}

/* ---------- article page ---------- */
.art-shell{
  display:grid;grid-template-columns:minmax(0,1fr) 288px;gap:2rem;
  align-items:start;
  background:var(--white);border:1px solid var(--line);border-radius:12px;
  padding:1.6rem;
}
.art-main{min-width:0;}
.art-main h1{margin:.2rem 0 .6rem;}
.art-byline{
  display:flex;flex-wrap:wrap;gap:.7rem;align-items:center;
  font-size:.78rem;color:var(--muted);
  border-bottom:1px solid var(--line);padding-bottom:.8rem;margin-bottom:1.1rem;
}
.art-byline .who{color:var(--navy);font-weight:600;}
.art-lead{
  font-size:.94rem;color:var(--ink);
  border-left:3px solid var(--gold);padding-left:.8rem;margin-bottom:1.1rem;
}
.art-body p{margin:0 0 1rem;font-size:.95rem;line-height:1.85;}
.art-body h2{
  margin:1.7rem 0 .7rem;padding-bottom:.35rem;
  border-bottom:1px solid var(--line);
}
.art-body h2:first-of-type{margin-top:1.1rem;}
.art-body ul{padding-left:1.2rem;margin:0 0 1rem;font-size:.93rem;}
.art-body li{margin-bottom:.35rem;}
.art-body figure{margin:1.2rem 0;border:1px solid var(--line);border-radius:10px;overflow:hidden;background:#fafbfd;}
.art-body figure img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.art-body figcaption{padding:.55rem .8rem;font-size:.75rem;color:var(--muted);}
.art-faq{background:#f5f7fb;border-radius:10px;padding:1rem 1.2rem;margin:1.4rem 0;}
.art-faq h2{border:0;margin:0 0 .6rem;font-size:1rem;padding:0;}
.art-faq dt{font-weight:600;color:var(--ink);font-size:.9rem;margin-top:.6rem;}
.art-faq dd{margin:.15rem 0 0;font-size:.88rem;color:var(--body);}
.art-foot{
  display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap;
  border-top:1px solid var(--line);margin-top:1.6rem;padding-top:1rem;font-size:.83rem;
}
.art-side{padding-left:1rem;border-left:1px solid var(--line);}
.art-side h2{
  font-size:.76rem;letter-spacing:.14em;color:var(--muted);
  text-transform:uppercase;margin-bottom:.6rem;font-weight:600;
}
.aside-links{list-style:none;margin:0 0 1.2rem;padding:0;}
.aside-links li{margin-bottom:.45rem;}
.aside-links a{
  display:block;font-size:.85rem;color:var(--body);
  padding:.5rem .65rem;border:1px solid var(--line);border-radius:6px;background:#fbfcfe;
}
.aside-links a:hover{border-color:var(--gold-soft);background:#fdf9ef;color:var(--navy);}
.byline-box{
  background:#f5f7fb;border-radius:9px;padding:.9rem 1rem;font-size:.8rem;color:var(--muted);
}

/* ---------- footer ---------- */
.site-foot{
  background:var(--navy-deep);color:#c8d4e6;margin-top:1rem;
  padding:2.2rem 1.25rem 1.6rem;font-size:.82rem;
}
.foot-inner{max-width:1240px;margin:0 auto;}
.foot-cols{
  display:grid;grid-template-columns:1.3fr 1fr 1.2fr;gap:2rem;
  padding-bottom:1.4rem;border-bottom:1px solid rgba(255,255,255,.14);
}
.foot-brand{display:flex;gap:.6rem;align-items:center;margin-bottom:.6rem;color:#fff;font-weight:700;}
.foot-brand img{width:34px;height:34px;border-radius:7px;}
.foot-cols h3{
  color:#fff;font-size:.82rem;letter-spacing:.1em;margin-bottom:.55rem;font-weight:600;
}
.foot-cols p{margin:0 0 .3rem;line-height:1.7;}
.foot-cols ul{list-style:none;margin:0;padding:0;}
.foot-cols li{margin-bottom:.3rem;}
.foot-cols a{color:#c8d4e6;}
.foot-cols a:hover{color:var(--gold-soft);}
.foot-legal{
  padding-top:1rem;font-size:.76rem;color:#9fb0c8;line-height:1.9;text-align:center;
}
.foot-legal p{margin:0;}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .wrap{grid-template-columns:1fr;gap:1.4rem;}
  .rail{position:static;}
  .rail-card{display:flex;gap:1.2rem;align-items:flex-start;flex-wrap:wrap;}
  .rail-card h2{width:100%;margin-bottom:.2rem;}
  .rail-index{flex:1 1 320px;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));}
  .rail-note{flex:1 1 220px;margin-top:0;border-top:0;padding-top:0;}
  .art-shell{grid-template-columns:1fr;}
  .art-side{border-left:0;padding-left:0;border-top:1px solid var(--line);padding-top:1.1rem;}
  .grid-bento{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:768px){
  .nav{display:none;}
  .nav.is-open{
    display:flex;flex-direction:column;align-items:stretch;
    position:absolute;left:0;right:0;top:100%;
    background:var(--white);border-bottom:1px solid var(--line);
    padding:.6rem .8rem 1rem;gap:.15rem;
    box-shadow:0 12px 24px rgba(20,43,82,.12);
  }
  .nav.is-open a{padding:.65rem .5rem;border-bottom:1px solid #eef1f6;}
  .site-head-inner{position:relative;flex-wrap:wrap;}
  .menu-btn{display:block;}
  .lede{grid-template-columns:1fr;padding:1.1rem;gap:1rem;}
  .cat-head{grid-template-columns:1fr;padding:1.1rem;}
  .grid-2,.grid-3,.grid-bento,.stat-row{grid-template-columns:1fr;}
  .bento-a,.bento-b,.bento-c,.bento-d{grid-column:span 1;grid-row:auto;}
  .split-strip{grid-template-columns:1fr;padding:1.2rem;}
  .rowlist li{grid-template-columns:1fr;gap:.2rem;}
  .art-shell{padding:1.1rem;}
  .foot-cols{grid-template-columns:1fr;gap:1.2rem;}
  .rail-index{grid-template-columns:1fr;}
  .lede-media img{aspect-ratio:16/10;}
}