html[data-theme="blue"]{
  --bg:#060a13;
  --bg2:#090f1a;
  --panel:#0c1421;
  --panel2:#101a2b;
  --panel3:#16223a;
  --panel4:#1c2a44;
  --line:#1c2940;
  --line2:#2a3c58;
  --ink:#eef4ff;
  --ink2:#d6e2f7;
  --sub:#a3b4ce;
  --dim:#879ab9;
  --faint:#6c80a0;
  --honey:#4d86ff;
  --honey2:#a9c8ff;
  --accent-rgb:77,134,255;
  --accent-hi:#7ea9ff;
  --accent-ink:#ffffff;
  --tint:rgba(77,134,255,.1);
  --blue:#8ab4ff;
  --panel-end:#0a111c;
  --panel2-end:#0b1220;
  --panel-deep:#080f1a;
  --side-a:#09101c;
  --side-b:#060a13;
  --topbar-bg:rgba(6,10,19,.86);
  --tape-bg:rgba(7,12,22,.9);
  --dock-bg:rgba(7,12,22,.95);
  --pal-bg:#0a121f;
  --toast-bg:#0f1a2c;
  --bar-bg:rgba(6,10,19,.4);
  --tag-bg:rgba(6,10,19,.72);
  --art-a:#13223a;
  --art-b:#070c15;
  --thumb-a:#15243b;
  --thumb-b:#080d16;
}
html[data-theme="blue"] body{
  background-image:
    radial-gradient(1100px 620px at 4% -14%,rgba(77,134,255,.14),transparent 62%),
    radial-gradient(900px 620px at 104% 2%,rgba(87,160,255,.06),transparent 58%),
    linear-gradient(rgba(255,255,255,.013) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.013) 1px,transparent 1px);
}
html[data-theme="blue"] ::selection{background:rgba(77,134,255,.34);color:#fff}
html[data-theme="blue"] .btn.honey,
html[data-theme="blue"] .btn-honey{
  color:#fff;
  background:linear-gradient(180deg,#5f95ff,#2f6cf6);
  box-shadow:0 1px 0 rgba(255,255,255,.22) inset,0 8px 24px rgba(47,108,246,.28);
}
html[data-theme="blue"] .btn.honey:hover,
html[data-theme="blue"] .btn-honey:hover{background:linear-gradient(180deg,#7ea9ff,#3d7bff);color:#fff}
html[data-theme="blue"] .brand .bt b{letter-spacing:.06em}
html[data-theme="blue"] .auth-visual::after{color:rgba(255,255,255,.03)}

.home-sec-head{margin-top:26px}
.home-sec-snapshot{margin-top:30px}
.hub-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.hub-card{
  position:relative;display:flex;flex-direction:column;min-width:0;overflow:hidden;
  padding:15px 16px 13px;border:1px solid var(--line);border-radius:var(--r);
  background:linear-gradient(165deg,var(--panel2),var(--panel) 78%);
  box-shadow:var(--sh);
  transition:border-color .18s,transform .18s,box-shadow .18s;
}
.hub-card:hover{border-color:rgba(var(--accent-rgb),.42);transform:translateY(-2px);box-shadow:var(--sh-lift)}
.hub-head{display:flex;align-items:center;gap:9px}
.hub-ic{
  width:32px;height:32px;flex:none;display:grid;place-items:center;
  border:1px solid var(--line);border-radius:9px;background:var(--bg2);color:var(--honey);
}
.hub-ic svg{width:16px;height:16px}
.hub-no{font-family:var(--font-mono);font-size:9px;letter-spacing:.1em;color:var(--faint)}
.hub-badge{
  display:inline-flex;align-items:center;height:17px;padding:0 6px;border-radius:4px;
  border:1px solid rgba(var(--accent-rgb),.35);background:var(--tint);color:var(--honey);
  font-family:var(--font-mono);font-size:8px;letter-spacing:.1em;
}
.hub-en{margin-left:auto;font-family:var(--font-mono);font-size:8px;letter-spacing:.16em;color:var(--faint)}
.hub-title{display:block;margin-top:12px;font-family:var(--font-ui);font-size:19px;font-weight:700;letter-spacing:.04em;line-height:1.15}
.hub-desc{display:block;margin-top:3px;font-size:10.5px;line-height:1.55;color:var(--faint)}
.hub-metric{display:flex;align-items:baseline;gap:6px;margin-top:11px;font-family:var(--font-mono);font-size:8.5px;color:var(--faint)}
.hub-metric b{font-family:var(--font-ui);font-size:20px;font-weight:700;line-height:1;color:var(--honey2)}
.hub-metric small{font-size:8.5px;color:var(--faint);letter-spacing:.02em}
.hub-go{
  display:flex;align-items:center;gap:5px;margin-top:12px;padding-top:9px;border-top:1px solid var(--line);
  font-family:var(--font-mono);font-size:8.5px;letter-spacing:.1em;color:var(--dim);
}
.hub-go svg{width:12px;height:12px;transition:transform .18s}
.hub-card:hover .hub-go{color:var(--honey)}
.hub-card:hover .hub-go svg{transform:translateX(3px)}

[data-sec]{scroll-margin-top:calc(var(--top-h) + var(--tape-h) + 14px)}
.sec-tabs{display:none}
@media (max-width:1080px){
  .dash-grid{grid-template-columns:minmax(0,1fr)}
  .dash-grid > .stack:last-child,.detail-cols > .stack:last-child{position:static;top:auto}
  .detail-cols{display:flex;flex-direction:column;gap:14px;align-items:stretch;grid-template-areas:none}
  .sec-tabs{
    display:flex;align-items:center;gap:6px;overflow-x:auto;scrollbar-width:none;
    position:sticky;top:calc(var(--top-h) + var(--tape-h));z-index:33;
    margin:0 0 4px;padding:2px 0 4px;
    scroll-margin-top:calc(var(--top-h) + var(--tape-h) + 8px);
  }
  .sec-tabs.fill-tabs{margin-top:10px}
  .rank-boards{margin-top:8px}
  .hall-main{gap:8px;margin-top:8px}
  .sec-tabs::-webkit-scrollbar{display:none}
  .sec-tab{
    flex:none;display:inline-flex;align-items:center;gap:6px;height:31px;padding:0 11px;
    border:1px solid var(--line);border-radius:8px;background:var(--bg2);color:var(--dim);
    font-family:var(--font-ui);font-size:12.5px;font-weight:600;letter-spacing:.03em;
    cursor:pointer;white-space:nowrap;transition:background .16s,border-color .16s,color .16s;
  }
  .sec-tab em{font-style:normal;font-family:var(--font-mono);font-size:8px;letter-spacing:.06em;color:var(--faint)}
  .sec-tab:hover{color:var(--ink2);border-color:var(--line2)}
  .sec-tab.on{background:var(--tint);border-color:rgba(var(--accent-rgb),.45);color:var(--honey2)}
  .sec-tab.on em{color:var(--honey)}
  .sec-off{display:none!important}
  .sec-empty{display:none!important}
  .hub-grid{grid-template-columns:1fr;gap:8px}
  .hub-card{flex-direction:row;align-items:center;gap:12px;padding:11px 13px}
  .hub-head{gap:8px;flex:none}
  .hub-ic{width:30px;height:30px;border-radius:8px}
  .hub-no{width:16px;text-align:center}
  .hub-badge{display:none}
  .hub-en{display:none}
  .hub-title{margin:0;font-size:16px;letter-spacing:.03em}
  .hub-desc{display:none}
  .hub-metric{margin:0 0 0 auto;flex:none;flex-direction:column;align-items:flex-end;gap:1px;text-align:right}
  .hub-metric b{font-size:16px}
  .hub-go{display:none}
}
@media (max-width:760px){
  .topbar .live-pill{display:none}
}
@media (max-width:420px){
  .hub-card{gap:9px;padding:10px 12px}
  .hub-title{font-size:15px}
}
@media (max-width:380px){
  .topbar .search-trigger{display:none}
  .topbar{gap:7px}
  .topbar .top-brand b{font-size:15px;letter-spacing:.05em}
}