:root{
  --bg:#0b1020;
  --panel:#121a33;
  --text:#eef2ff;
  --muted:#aab3d6;
  --brand:#6aa9ff;
  --accent:#8cffc1;
  --border:rgba(255,255,255,.12);
  --shadow: 0 12px 30px rgba(0,0,0,.35);
  --radius:16px;
  --max:1100px;
  --font: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial;
}

:root[data-theme="light"]{
  --bg:#f7f8ff;
  --panel:#ffffff;
  --text:#0b1020;
  --muted:#4b5677;
  --brand:#2b59ff;
  --accent:#0aa37f;
  --border:rgba(0,0,0,.12);
  --shadow: 0 10px 22px rgba(0,0,0,.10);
}

*{ box-sizing:border-box; }
html,body{ height:100%; }
body{
  margin:0;
  font-family: var(--font);
  background: radial-gradient(1000px 600px at 20% -10%, rgba(106,169,255,.18), transparent 50%),
              radial-gradient(800px 400px at 90% 0%, rgba(140,255,193,.10), transparent 55%),
              var(--bg);
  color:var(--text);
  line-height:1.5;
}

a{ color:inherit; text-decoration:none; }
a:hover{ text-decoration:underline; }

.container{ width: min(var(--max), calc(100% - 2rem)); margin: 0 auto; }

.skip-link{ position:absolute; left:-999px; top:0; background:var(--panel); color:var(--text); padding:.6rem .9rem; border-radius:10px; }
.skip-link:focus{ left:1rem; top:1rem; z-index:9999; }

.site-header{ position:sticky; top:0; z-index:50; backdrop-filter: blur(10px); background: color-mix(in oklab, var(--bg) 60%, transparent); border-bottom:1px solid var(--border); }
.header-inner{ display:flex; align-items:center; justify-content:space-between; padding: .9rem 0; gap: 1rem; }
.brand{ display:flex; gap:.6rem; align-items:center; }
.logo{ color:var(--accent); font-size:1.15rem; }
.brand-link{ font-weight:850; letter-spacing:.2px; }

.nav{ display:flex; gap:.9rem; align-items:center; flex-wrap: wrap; }
.nav a{ padding:.35rem .55rem; border-radius:10px; color:var(--muted); }
.nav a.active, .nav a:hover{ color:var(--text); background: color-mix(in oklab, var(--panel) 80%, transparent); text-decoration:none; }

.btn{ display:inline-flex; align-items:center; justify-content:center; padding:.6rem .9rem; border-radius:12px; border:1px solid var(--border); background: color-mix(in oklab, var(--panel) 85%, transparent); cursor:pointer; font-weight:650; }
.btn:hover{ transform: translateY(-1px); box-shadow: var(--shadow); text-decoration:none; }
.btn.primary{ background: linear-gradient(135deg, var(--brand), color-mix(in oklab, var(--brand) 40%, var(--accent))); border: none; color: #071021; }
.btn.ghost{ background: transparent; }

.hero{ padding: 3.2rem 0 1.2rem; }
.hero h1{ font-size: clamp(2rem, 3vw, 3rem); margin: 0 0 .8rem 0; }
.lead{ color: var(--muted); font-size:1.08rem; max-width: 78ch; }
.hero-actions{ margin-top: 1.2rem; display:flex; gap:.7rem; flex-wrap:wrap; }

.section{ padding: 2rem 0; }
.muted{ color: var(--muted); }

.stats{ margin-top: 1.6rem; display:grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap:.8rem; }
.stat{ background: color-mix(in oklab, var(--panel) 88%, transparent); border: 1px solid var(--border); border-radius: var(--radius); padding: .9rem 1rem; }
.stat-num{ font-size:1.5rem; font-weight:850; }
.stat-label{ color: var(--muted); font-size:.95rem; }

.filters{ display:grid; grid-template-columns: 1.25fr repeat(5, .9fr); gap: .8rem; margin: 1rem 0 1.1rem; }
@media (max-width: 1100px){ .filters{ grid-template-columns: 1fr 1fr; } }
@media (max-width: 720px){ .filters{ grid-template-columns: 1fr; } }

.field span{ display:block; font-size:.9rem; color: var(--muted); margin-bottom:.35rem; }
input, select{ width:100%; padding: .65rem .7rem; border-radius: 12px; border:1px solid var(--border); background: color-mix(in oklab, var(--panel) 92%, transparent); color: var(--text); outline: none; }
input:focus, select:focus{ border-color: color-mix(in oklab, var(--brand) 55%, var(--border)); }

.toolbar{ display:flex; justify-content:space-between; align-items:center; gap:1rem; margin-bottom: .7rem; }

.grid{ display:grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: .9rem; }
@media (max-width: 980px){ .grid{ grid-template-columns: repeat(2, minmax(0,1fr)); } }
@media (max-width: 640px){ .grid{ grid-template-columns: 1fr; } }

.card{ border-radius: var(--radius); border: 1px solid var(--border); background: color-mix(in oklab, var(--panel) 90%, transparent); padding: 1rem; box-shadow: none; display:flex; flex-direction:column; gap:.55rem; }
.card:hover{ box-shadow: var(--shadow); transform: translateY(-1px); text-decoration:none; }
.card h3{ margin: 0; font-size:1.05rem; }
.badges{ display:flex; gap:.35rem; flex-wrap:wrap; }
.badge{ font-size:.78rem; border: 1px solid var(--border); color: var(--muted); padding:.2rem .45rem; border-radius: 999px; }
.card .meta{ color: var(--muted); font-size:.92rem; }
.card .links{ display:flex; gap:.6rem; flex-wrap:wrap; margin-top:.3rem; }
.card .links a{ color: color-mix(in oklab, var(--brand) 85%, var(--text)); font-weight:750; }

.callout{ border: 1px solid var(--border); border-radius: var(--radius); padding: 1.1rem 1.2rem; background: linear-gradient(180deg, color-mix(in oklab, var(--panel) 92%, transparent), transparent); }

.prose{ max-width: 90ch; }
.prose ul, .prose ol{ padding-left: 1.2rem; }

.dl{ margin: .6rem 0 1.2rem; border:1px solid var(--border); border-radius: var(--radius); padding: .8rem; background: color-mix(in oklab, var(--panel) 92%, transparent); }
.dl-row{ display:grid; grid-template-columns: 210px 1fr; gap: .7rem; padding: .35rem 0; border-bottom:1px solid color-mix(in oklab, var(--border) 60%, transparent); }
.dl-row:last-child{ border-bottom:none; }
.dl dt{ color: var(--muted); font-weight:750; }
.dl dd{ margin:0; }
@media (max-width: 720px){ .dl-row{ grid-template-columns: 1fr; } }

.site-footer{ border-top: 1px solid var(--border); margin-top: 2rem; }
.footer-inner{ display:flex; justify-content:space-between; align-items:center; padding: 1.2rem 0; gap:1rem; flex-wrap: wrap; }