:root{
  color-scheme: dark;
  --bg:#0b0f14;
  --bg-2:#101720;
  --panel:#131b25;
  --panel-2:#182231;
  --ink:#f4efe8;
  --muted:#b7c0ce;
  --line:rgba(200,214,236,.16);
  --line-strong:rgba(224,235,255,.24);
  --accent:#e3b85a;
  --accent-2:#59c7aa;
  --accent-3:#89a9ff;
  --shadow:0 20px 58px rgba(0,0,0,.42);
  --shadow-soft:0 12px 30px rgba(0,0,0,.28);
  --radius-xl:24px;
  --radius-lg:18px;
  --radius-md:14px;
  --max:1280px;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  min-width:320px;
  color:var(--ink);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC",system-ui,sans-serif;
  line-height:1.7;
  background:
    radial-gradient(circle at 10% 0%, rgba(89,199,170,.14), transparent 22%),
    radial-gradient(circle at 88% 10%, rgba(227,184,90,.14), transparent 20%),
    linear-gradient(180deg, var(--bg) 0%, var(--bg-2) 48%, #0a1018 100%);
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
  background-size:44px 44px;
  opacity:.3;
  mask-image:linear-gradient(180deg, rgba(0,0,0,.18), transparent 88%);
}
a{color:inherit;text-decoration:none}
p,ul{margin:0}
strong{font-weight:700}

.skip-link{
  position:absolute;
  left:-999px;
  top:12px;
  z-index:50;
  padding:10px 14px;
  border-radius:999px;
  background:var(--panel);
  border:1px solid var(--line);
  box-shadow:var(--shadow-soft);
}
.skip-link:focus{left:12px}

.canvas{
  width:min(var(--max), calc(100vw - 24px));
  margin:0 auto;
  padding:14px 0 42px;
}

.header{
  position:sticky;
  top:10px;
  z-index:20;
  display:flex;
  align-items:center;
  gap:18px;
  padding:14px 18px;
  border-radius:20px;
  border:1px solid var(--line);
  background:rgba(19,27,37,.88);
  backdrop-filter:blur(16px);
  box-shadow:var(--shadow-soft);
}
.brand-lockup{
  display:flex;
  align-items:center;
  gap:12px;
}
.brand-mark{
  width:48px;
  height:48px;
  border-radius:15px;
  display:grid;
  place-items:center;
  color:#0d1117;
  background:linear-gradient(145deg, #e3b85a, #f6dd8a);
  font:800 18px/1 "Avenir Next","PingFang SC",sans-serif;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.35);
}
.brand-lockup strong{display:block;font-size:18px;line-height:1.08}
.brand-lockup p{display:block;margin-top:3px;color:var(--muted);font-size:12px}
.topnav{
  margin-left:auto;
  display:flex;
  flex-wrap:wrap;
  justify-content:flex-end;
  gap:8px;
}
.topnav a{
  padding:9px 13px;
  border-radius:999px;
  border:1px solid transparent;
  color:var(--muted);
  background:rgba(255,255,255,.03);
}
.topnav a:hover,
.topnav a:focus-visible{
  color:var(--ink);
  border-color:rgba(227,184,90,.28);
  background:rgba(227,184,90,.08);
  outline:none;
}

main{padding-top:16px}
.hero,
.section,
.about-card{
  border:1px solid var(--line);
  background:var(--panel);
  box-shadow:var(--shadow);
}
.hero{
  display:grid;
  grid-template-columns:minmax(0,1.24fr) minmax(280px,.76fr);
  gap:18px;
  padding:28px;
  border-radius:24px;
  overflow:hidden;
  background:
    radial-gradient(circle at 18% 18%, rgba(89,199,170,.14), transparent 18%),
    radial-gradient(circle at 84% 16%, rgba(227,184,90,.12), transparent 16%),
    linear-gradient(135deg, rgba(20,29,39,.98), rgba(13,18,27,.96));
}
.hero-copy{
  display:flex;
  flex-direction:column;
  justify-content:center;
  gap:18px;
}
.eyebrow,
.section-kicker,
.panel-kicker{
  display:inline-flex;
  width:fit-content;
  align-items:center;
  gap:8px;
  padding:8px 12px;
  border-radius:999px;
  border:1px solid rgba(227,184,90,.18);
  background:rgba(227,184,90,.08);
  color:#f0cb76;
  font-size:13px;
  font-weight:700;
  letter-spacing:.02em;
}
h1,h2,h3{margin:0}
h1{
  max-width:11ch;
  font-family:"Songti SC","STSong","Noto Serif SC",serif;
  font-size:clamp(42px,6vw,84px);
  line-height:.95;
  letter-spacing:-.06em;
}
h2{
  font-family:"Songti SC","STSong","Noto Serif SC",serif;
  font-size:clamp(26px,3.2vw,44px);
  line-height:1.08;
  letter-spacing:-.04em;
}
h3{
  font-size:1.02rem;
  line-height:1.35;
}
.lead{
  max-width:58ch;
  font-size:1.06rem;
  line-height:1.9;
  color:var(--muted);
}
.hero-pills{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
}
.hero-pills span{
  padding:9px 12px;
  border-radius:999px;
  border:1px solid rgba(89,199,170,.16);
  background:rgba(89,199,170,.08);
  color:#dff5ef;
}
.hero-fact{
  border-radius:22px;
  padding:20px;
  background:
    linear-gradient(180deg, rgba(24,34,49,.98), rgba(17,24,36,.96));
  border:1px solid rgba(255,255,255,.06);
  display:flex;
  flex-direction:column;
  justify-content:center;
}
.fact-list{
  padding-left:20px;
  color:#c4cfdd;
  line-height:1.9;
}
.fact-list li+li{margin-top:10px}

.section{
  margin-top:18px;
  padding:24px;
  border-radius:24px;
}
.section-heading{
  display:grid;
  gap:10px;
  margin-bottom:16px;
}
.mosaic-grid{
  display:grid;
  grid-template-columns:repeat(12, minmax(0, 1fr));
  gap:14px;
}
.mosaic-card{
  grid-column:span 4;
  min-height:170px;
  padding:18px;
  border-radius:20px;
  border:1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(24,34,49,.96), rgba(18,26,38,.96));
  box-shadow:0 14px 32px rgba(0,0,0,.22);
}
.mosaic-card--wide{grid-column:span 7}
.mosaic-card--tall{
  grid-column:span 5;
  min-height:354px;
  background:
    radial-gradient(circle at 16% 18%, rgba(89,199,170,.12), transparent 18%),
    linear-gradient(180deg, rgba(18,27,40,.98), rgba(14,20,30,.96));
}
.card-index{
  display:inline-grid;
  place-items:center;
  min-width:42px;
  min-height:42px;
  padding:0 12px;
  border-radius:14px;
  margin-bottom:12px;
  background:rgba(227,184,90,.12);
  color:#f3cd73;
  font-weight:800;
}
.mosaic-card p{
  color:var(--muted);
  line-height:1.86;
}

.table-card{
  border-radius:20px;
  overflow:hidden;
  border:1px solid var(--line);
  background:linear-gradient(180deg, rgba(18,27,40,.98), rgba(13,18,27,.96));
}
.table-head,
.table-row{
  display:grid;
  grid-template-columns:1.1fr 1.6fr 1.2fr;
  gap:14px;
  padding:16px 18px;
}
.table-head{
  border-bottom:1px solid var(--line);
  color:#f1cc73;
  font-weight:800;
  letter-spacing:.02em;
}
.table-row{
  border-top:1px solid rgba(255,255,255,.06);
}
.table-row strong{
  color:#fff;
}
.table-row span{
  color:var(--muted);
  line-height:1.85;
}

.route-band{
  display:grid;
  grid-template-columns:repeat(3, minmax(0,1fr));
  gap:14px;
}
.route-band article{
  padding:18px;
  border-radius:20px;
  border:1px solid var(--line);
  background:linear-gradient(180deg, rgba(22,31,46,.96), rgba(16,23,34,.96));
}
.route-band p{
  color:var(--muted);
  line-height:1.85;
  margin-top:8px;
}

.footer{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  margin-top:18px;
  padding:14px 4px 4px;
  color:var(--muted);
}
.footer a{color:#fff}

.about-layout{
  display:grid;
  grid-template-columns:minmax(0,860px);
  justify-content:center;
}
.about-card{
  margin-top:18px;
  padding:26px 22px 24px;
  border-radius:24px;
  background:
    radial-gradient(circle at 18% 12%, rgba(89,199,170,.12), transparent 18%),
    linear-gradient(180deg, rgba(20,29,39,.98), rgba(14,20,30,.96));
}
.about-card p{
  color:var(--muted);
  line-height:1.9;
}
.about-card p + p{margin-top:12px}
.home-link{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-height:46px;
  margin-top:18px;
  padding:0 16px;
  border-radius:999px;
  border:1px solid rgba(227,184,90,.24);
  background:rgba(227,184,90,.08);
  color:#f7d781;
}

@media (max-width: 980px){
  .hero{
    grid-template-columns:1fr;
  }
  .mosaic-card,
  .mosaic-card--wide,
  .mosaic-card--tall{
    grid-column:span 12;
    min-height:auto;
  }
  .table-head,
  .table-row{
    grid-template-columns:1fr;
  }
  .route-band{
    grid-template-columns:1fr;
  }
}

@media (max-width: 720px){
  .canvas{
    width:min(var(--max), calc(100vw - 18px));
    padding-top:10px;
  }
  .header{
    flex-wrap:wrap;
    border-radius:18px;
    padding:14px;
  }
  .topnav{
    margin-left:0;
    justify-content:flex-start;
  }
  .hero{
    padding:18px;
  }
  h1{
    max-width:100%;
    font-size:clamp(34px, 11vw, 52px);
  }
  .section{
    padding:18px;
    border-radius:20px;
  }
  .footer{
    flex-direction:column;
    align-items:flex-start;
  }
}