:root{
  --bg:#0b1120;
  --panel:#101827;
  --panel-2:#172033;
  --text:#dbe4f0;
  --muted:#94a3b8;
  --line:#243247;
  --accent:#38bdf8;
  --accent-2:#0ea5e9;
  --page:#f8fafc;
  --card:#ffffff;
  --ink:#0f172a;
  --soft:#475569;
  --shadow:0 16px 50px rgba(15,23,42,.08);
  --radius:24px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;background:var(--page);color:var(--ink);line-height:1.7}
a{color:#0369a1;text-decoration:none} a:hover{text-decoration:underline}
img{max-width:100%;height:auto;border-radius:18px}
.container{width:min(1120px,92vw);margin:0 auto}
.site-header{position:sticky;top:0;z-index:100;background:rgba(11,17,32,.82);backdrop-filter:blur(14px);border-bottom:1px solid rgba(148,163,184,.15)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:14px 0}
.brand{text-decoration:none;color:#fff;display:flex;flex-direction:column;gap:2px}
.brand strong{font-size:1rem;letter-spacing:.2px}
.brand small{color:#a5b4c7}
.nav{display:flex;gap:18px;flex-wrap:wrap}
.nav a{color:#dbe4f0;font-weight:600;padding:8px 0;position:relative}
.nav a.current::after,.nav a:hover::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--accent);border-radius:999px}
.hero{background:radial-gradient(circle at top left,#1d4ed8 0,#0b1120 42%,#07111f 100%);color:#fff;padding:88px 0 72px;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:28px;align-items:center}
.kicker{display:inline-block;border:1px solid rgba(125,211,252,.35);background:rgba(14,165,233,.08);padding:8px 12px;border-radius:999px;color:#bae6fd;font-size:.9rem;font-weight:700;letter-spacing:.2px}
.hero h1{font-size:clamp(2.4rem,6vw,4.8rem);line-height:1.02;margin:16px 0}
.hero p{font-size:1.08rem;color:#d8e1ee;max-width:720px}
.hero-panel{background:linear-gradient(180deg,rgba(255,255,255,.08),rgba(255,255,255,.04));border:1px solid rgba(148,163,184,.18);padding:24px;border-radius:28px;box-shadow:0 20px 60px rgba(0,0,0,.22)}
.stat-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-top:22px}
.stat{background:rgba(255,255,255,.05);border:1px solid rgba(148,163,184,.16);padding:16px;border-radius:20px}
.stat strong{display:block;font-size:1.4rem;color:#fff}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:24px}
.button{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff !important;padding:14px 18px;border-radius:16px;font-weight:800;box-shadow:0 10px 30px rgba(14,165,233,.25)}
.button.secondary{background:#fff;color:var(--ink) !important;box-shadow:none}
main{padding:56px 0}
.section{margin:0 0 34px}
.section-head{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:18px}
.section h2{font-size:2rem;line-height:1.1;margin:0}
.section p.lead{color:var(--soft);max-width:760px;margin:10px 0 0}
.grid{display:grid;gap:22px}
.cards{grid-template-columns:repeat(auto-fit,minmax(250px,1fr))}
.card{background:var(--card);border:1px solid #e5edf6;border-radius:24px;padding:24px;box-shadow:var(--shadow)}
.card h3{margin:.2rem 0 .6rem;font-size:1.18rem;line-height:1.2}
.card p{margin:0;color:var(--soft)}
.card .meta{margin-top:12px}
.content{background:var(--card);border:1px solid #e5edf6;border-radius:28px;padding:34px;box-shadow:var(--shadow)}
.page-intro{margin-bottom:22px;padding-bottom:18px;border-bottom:1px solid #e2e8f0}
.page-intro h1{margin:0 0 10px;font-size:clamp(2rem,4vw,3rem);line-height:1.05}
.meta,.muted{color:#64748b;font-size:.95rem}
.content h2,.content h3,.content h4{line-height:1.2;margin-top:1.5em}
.content p,.content li{font-size:1.04rem}
.content blockquote{margin:20px 0;padding:14px 18px;border-left:4px solid var(--accent);background:#f0f9ff;border-radius:14px}
.content table{width:100%;border-collapse:collapse;overflow:hidden;border-radius:16px}
.content th,.content td{border:1px solid #e2e8f0;padding:12px 10px;text-align:left}
.content pre{white-space:pre-wrap;background:#0f172a;color:#e2e8f0;padding:18px;border-radius:16px;overflow:auto}
.content code{background:#e2e8f0;padding:.12rem .4rem;border-radius:8px}
.note{background:#ecfeff;border:1px solid #bae6fd;padding:18px 20px;border-radius:18px}
.post-grid{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:24px}
.sidebar-card{background:#f8fafc;border:1px solid #e2e8f0;border-radius:22px;padding:20px;position:sticky;top:88px}
.sidebar-card ul{padding-left:18px;margin:10px 0 0}
.search-box{width:100%;padding:14px 16px;border:1px solid #cbd5e1;border-radius:16px;font:inherit}
.filter-row{display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin:0 0 18px}
.post-list{display:grid;gap:18px}
.post-item{background:#fff;border:1px solid #e2e8f0;border-radius:22px;padding:22px;box-shadow:var(--shadow)}
.post-item h3{margin:0 0 8px;font-size:1.3rem}
.post-item p{margin:8px 0 0;color:var(--soft)}
.cta-band{background:linear-gradient(135deg,#e0f2fe,#f8fafc);border:1px solid #cfe8fb;border-radius:28px;padding:30px}
.site-footer{margin-top:60px;background:#0b1120;color:#cbd5e1;padding:34px 0}
.site-footer a{color:#bae6fd}
.footer-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:20px}
.toc{margin-top:16px;padding-left:18px}
@media (max-width: 880px){.hero-grid,.post-grid,.footer-grid{grid-template-columns:1fr}.sidebar-card{position:static}.hero{padding:72px 0 56px}}
@media (max-width: 680px){.header-inner{flex-direction:column;align-items:flex-start}.content{padding:24px}.hero h1{font-size:2.4rem}}