:root{
  --bg:#f5f8fd;--panel:#fff;--panel-soft:#f8fbff;--text:#111827;--muted:#667085;
  --line:#dce5f1;--blue:#075ee8;--blue-dark:#0649b3;--blue-soft:#eaf2ff;
  --green:#087f6f;--green-soft:#eaf7f5;--red:#cf2e2e;--black:#111827;
  --shadow-sm:0 4px 14px rgba(16,24,40,.055);--shadow:0 14px 38px rgba(16,24,40,.08);
  --radius:20px;--radius-sm:13px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;min-height:100vh;background:radial-gradient(circle at 82% -10%,#dfeaff 0,transparent 30%),linear-gradient(180deg,#f8faff 0,#f3f7fc 100%);color:var(--text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.5}
button,input{font:inherit}
a{color:inherit}
.site-header{height:74px;padding:0 max(20px,calc((100vw - 1220px)/2));display:flex;align-items:center;justify-content:space-between;background:rgba(255,255,255,.9);border-bottom:1px solid rgba(220,229,241,.9);position:sticky;top:0;z-index:50;backdrop-filter:blur(18px)}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none}.brand-mark{width:43px;height:43px;border-radius:13px;display:grid;place-items:center;background:linear-gradient(145deg,#1670f4,#075ee8);box-shadow:0 8px 20px rgba(7,94,232,.22);color:#fff;font-weight:850;letter-spacing:-.04em}.brand-copy strong,.brand-copy small{display:block}.brand-copy strong{letter-spacing:-.02em}.brand-copy small{font-size:12px;color:var(--muted)}
.topnav{display:flex;align-items:center;gap:5px}.topnav a,.round-button{border:0;background:transparent;color:var(--muted);text-decoration:none;padding:10px 13px;border-radius:11px;font-weight:700;cursor:pointer;transition:.18s ease}.topnav a:hover,.topnav a.active,.round-button:hover{background:var(--blue-soft);color:var(--blue)}.round-button{width:42px;height:42px;padding:0;font-size:24px}
.app-shell{max-width:1220px;margin:0 auto;padding:44px 28px 84px}.hero{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(280px,.65fr);gap:28px;align-items:end;margin-bottom:28px}.hero-copy{padding:10px 0}.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--blue);font-weight:800;font-size:14px}.eyebrow::before{content:"";width:8px;height:8px;border-radius:999px;background:var(--blue);box-shadow:0 0 0 5px var(--blue-soft)}.hero h1{font-size:clamp(42px,6vw,72px);letter-spacing:-.065em;line-height:.98;margin:18px 0 14px}.hero p{margin:0;color:var(--muted);max-width:720px;font-size:18px}.hero-aside{background:rgba(255,255,255,.76);border:1px solid rgba(220,229,241,.95);border-radius:24px;padding:22px;box-shadow:var(--shadow-sm);backdrop-filter:blur(12px)}.hero-aside-label{font-size:12px;font-weight:800;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}.hero-aside strong{display:block;font-size:28px;letter-spacing:-.04em;margin:5px 0}.hero-aside p{font-size:14px}.hero-meta{display:flex;gap:8px;flex-wrap:wrap;margin-top:16px}.meta-chip,.badge{display:inline-flex;align-items:center;gap:6px;border-radius:999px;background:var(--blue-soft);color:var(--blue);padding:5px 9px;font-size:12px;font-weight:800}
.section-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.section-card,.opening-card,.panel,.accordion-list,.loading-card,.empty-state{background:rgba(255,255,255,.94);border:1px solid var(--line);box-shadow:var(--shadow-sm);border-radius:var(--radius)}.section-card{position:relative;min-height:250px;padding:23px;text-decoration:none;color:inherit;overflow:hidden;transition:.2s ease}.section-card::after{content:"";position:absolute;width:160px;height:160px;border-radius:50%;right:-74px;bottom:-82px;background:var(--blue-soft);transition:.22s ease}.section-card:hover{transform:translateY(-4px);border-color:#b7cef8;box-shadow:var(--shadow)}.section-card:hover::after{transform:scale(1.12)}.section-card .icon{width:48px;height:48px;border-radius:14px;background:var(--blue-soft);color:var(--blue);display:flex;align-items:center;justify-content:center;font-weight:850;font-size:20px;margin-bottom:56px;white-space:nowrap}.section-card h2{margin:0 0 6px;font-size:22px;letter-spacing:-.03em}.section-card p{margin:0;color:var(--muted);max-width:88%}.section-card .card-arrow{position:absolute;right:20px;top:21px;color:var(--blue);font-size:22px}
.section-header{display:flex;align-items:end;justify-content:space-between;gap:20px;margin:16px 0 24px}.section-header h1{font-size:clamp(40px,5vw,58px);letter-spacing:-.055em;line-height:1;margin:10px 0 8px}.section-header p{margin:0;color:var(--muted);font-size:17px}.back-link{display:inline-flex;align-items:center;gap:6px;color:var(--green);font-weight:800;text-decoration:none}.back-link:hover{text-decoration:underline}.opening-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.opening-card{min-height:136px;padding:18px;text-decoration:none;color:inherit;display:flex;gap:16px;align-items:flex-start;position:relative;transition:.2s ease}.opening-card:hover{transform:translateY(-3px);border-color:#b7cef8;box-shadow:var(--shadow)}.opening-card::after{content:"›";position:absolute;right:17px;top:50%;transform:translateY(-50%);font-size:24px;color:#9cb7df}.bid-pill{flex:0 0 auto;min-width:66px;height:58px;border-radius:15px;background:var(--blue-soft);color:var(--blue);display:flex;align-items:center;justify-content:center;white-space:nowrap;line-height:1;font-size:22px;font-weight:880;letter-spacing:-.04em}.opening-card-copy{padding-right:28px}.opening-card h3{margin:2px 0 6px;font-size:18px;letter-spacing:-.02em}.opening-card p{margin:0;color:var(--muted);font-size:14px}.card-tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:11px}.card-tag{font-size:11px;font-weight:800;color:#536174;background:#f2f5f9;border:1px solid #e4eaf2;border-radius:999px;padding:3px 7px}
.detail-kicker{display:flex;align-items:center;gap:8px;margin-top:24px;color:var(--blue);font-weight:800;font-size:14px}.detail-title{font-size:clamp(42px,6vw,68px);letter-spacing:-.065em;line-height:.98;margin:10px 0 9px}.ranges{color:var(--muted);white-space:pre-line;font-size:16px}.info-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:14px;margin:26px 0 16px}.panel{padding:19px}.panel-title{display:flex;align-items:center;gap:10px;font-weight:850;margin-bottom:14px}.panel-title-icon{width:28px;height:28px;border-radius:9px;display:grid;place-items:center;background:var(--blue-soft);color:var(--blue)}.auction{border:1px solid var(--line);border-radius:13px;overflow:hidden}.auction-grid{display:grid;grid-template-columns:repeat(4,1fr)}.auction-grid>div{padding:10px;text-align:center;border-right:1px solid var(--line)}.auction-grid>div:last-child{border-right:0}.auction-head{background:var(--blue);color:#fff;font-size:13px;font-weight:800}.auction-bids{font-weight:850;font-size:18px}.auction-note,.info-box{margin-top:12px;border:1px solid #c8e0dc;background:var(--green-soft);border-radius:11px;padding:11px 13px;color:#344054}.info-box ul{margin:0;padding-left:20px}.info-box li+li{margin-top:7px}.toolbar{display:flex;align-items:center;justify-content:space-between;gap:10px;margin:18px 0 12px}.toolbar-group{display:flex;gap:8px}.toolbar-label{color:var(--muted);font-size:14px}.button{border:1px solid var(--line);background:var(--panel);color:var(--text);border-radius:11px;padding:10px 13px;font-weight:800;cursor:pointer;transition:.18s ease}.button:hover{border-color:#b7cef8;background:var(--panel-soft)}.button.primary{background:var(--blue);color:#fff;border-color:var(--blue)}.button.primary:hover{background:var(--blue-dark)}
.accordion-list{overflow:hidden}.accordion-item+.accordion-item{border-top:1px solid var(--line)}.accordion-button{width:100%;display:grid;grid-template-columns:28px 80px minmax(0,1fr);gap:11px;align-items:center;border:0;background:#fff;padding:17px 18px;text-align:left;cursor:pointer;transition:.16s ease}.accordion-button:hover{background:var(--panel-soft)}.chevron{color:var(--blue);font-size:20px;transition:transform .18s ease}.bid{font-weight:880;font-size:17px;white-space:nowrap}.meaning{font-size:16px;min-width:0}.accordion-body{display:none;padding:0 14px 14px 44px;background:var(--panel-soft);color:#344054}.accordion-item.open>.accordion-body,.tree-node.open>.accordion-body{display:block}.accordion-item.open>.tree-toggle>.chevron,.tree-node.open>.tree-toggle>.chevron{transform:rotate(90deg)}.tree-children{border-left:2px solid #c8d9f6;padding-left:10px}.tree-node{position:relative;margin:0;border:0}.tree-node+.tree-node{margin-top:2px}.tree-node::before{content:"";position:absolute;left:-10px;top:25px;width:10px;border-top:2px solid #c8d9f6}.tree-node .accordion-button{padding:10px 10px;background:transparent;grid-template-columns:24px 80px minmax(0,1fr)}.tree-node .accordion-button:hover{background:rgba(255,255,255,.75);border-radius:10px}.tree-node .accordion-body{padding:2px 0 7px 34px;background:transparent}.tree-node .tree-children{margin-top:2px}.chevron.is-empty{visibility:hidden}
.suit-red{color:var(--red)}.suit-black{color:var(--black)}.loading-card,.empty-state{padding:24px}.empty-state h2{margin-top:0}.search-panel{position:fixed;inset:74px 0 auto 0;background:rgba(255,255,255,.98);border-bottom:1px solid var(--line);z-index:45;box-shadow:var(--shadow);backdrop-filter:blur(16px)}.search-inner,.search-results{max-width:900px;margin:0 auto;padding:16px 24px}.search-inner{display:flex;align-items:center;gap:10px}.search-icon{font-size:24px;color:var(--blue)}.search-inner input{flex:1;border:0;outline:0;background:transparent;padding:10px 2px;font-size:18px}.search-inner button{border:0;background:var(--blue);color:#fff;border-radius:10px;padding:10px 15px;font-weight:800;cursor:pointer}.search-result{display:block;padding:13px 0;border-top:1px solid var(--line);text-decoration:none;color:inherit}.search-result strong{display:block}.search-result span{color:var(--muted);font-size:14px}.site-footer{max-width:1220px;margin:0 auto;padding:28px;display:flex;justify-content:space-between;gap:16px;color:var(--muted);font-size:13px}.site-footer code{background:#fff;border:1px solid var(--line);padding:2px 6px;border-radius:6px}
@media(max-width:900px){.site-header{padding:0 16px}.brand-copy small{display:none}.topnav a{display:none}.topnav a.active{display:block}.app-shell{padding:30px 16px 64px}.hero{grid-template-columns:1fr}.hero-aside{display:none}.section-grid{grid-template-columns:1fr}.section-card{min-height:190px}.section-card .icon{margin-bottom:30px}.opening-grid{grid-template-columns:1fr}.info-grid{grid-template-columns:1fr}.section-header{align-items:flex-start;flex-direction:column}.toolbar{align-items:flex-start;flex-direction:column}.accordion-button{grid-template-columns:24px 66px minmax(0,1fr);padding:14px 12px}.accordion-body{padding:0 10px 12px 35px}.tree-node .accordion-button{grid-template-columns:22px 62px minmax(0,1fr);padding:9px 8px}.tree-node .accordion-body{padding:2px 0 6px 27px}.tree-children{padding-left:8px}.tree-node::before{left:-8px;width:8px}.auction-grid>div{padding:9px 5px;font-size:13px}.site-footer{flex-direction:column;padding:24px 16px}}
@media(max-width:520px){.brand-mark{width:39px;height:39px}.brand-copy strong{font-size:14px}.topnav a.active{font-size:13px;padding:8px}.hero h1{font-size:46px}.opening-card{min-height:126px}.bid-pill{min-width:58px;height:54px;font-size:20px}.section-header h1{font-size:44px}.detail-title{font-size:48px}}