:root{
  --bg:#071018;
  --bg-2:#0d1824;
  --panel:#0f1f2d;
  --panel-2:#132738;
  --text:#ecf4fb;
  --muted:#9fb3c8;
  --line:rgba(255,255,255,.09);
  --cyan:#59d7ff;
  --mint:#7ef0c9;
  --gold:#f8c96b;
  --danger:#ff7a7a;
  --shadow:0 18px 48px rgba(0,0,0,.32);
  --radius:22px;
  --max:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font:16px/1.7 Inter,ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;background:radial-gradient(circle at top right, rgba(89,215,255,.08), transparent 30%),radial-gradient(circle at 12% 18%, rgba(126,240,201,.09), transparent 22%),linear-gradient(180deg,var(--bg) 0%,#07121b 50%, #061018 100%);color:var(--text)}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{width:min(calc(100% - 32px),var(--max));margin:0 auto}
.site-header{position:sticky;top:0;z-index:50;backdrop-filter:blur(18px);background:rgba(7,16,24,.78);border-bottom:1px solid var(--line)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:14px 0}
.logo{display:flex;align-items:center;gap:14px;font-weight:800;letter-spacing:.02em}
.logo-mark{width:42px;height:42px;border-radius:14px;background:linear-gradient(135deg, rgba(89,215,255,.18), rgba(126,240,201,.12));border:1px solid rgba(89,215,255,.28);display:grid;place-items:center;box-shadow:0 0 0 1px rgba(255,255,255,.03) inset,0 10px 30px rgba(89,215,255,.08)}
.logo-mark span{font-size:19px;color:var(--cyan)}
.logo small{display:block;color:var(--muted);font-weight:600;font-size:.73rem;letter-spacing:.08em;text-transform:uppercase}
.nav{display:flex;align-items:center;gap:20px}
.nav a{color:var(--muted);font-weight:600}
.nav a:hover,.nav a.active{color:var(--text)}
.menu-btn{display:none;background:none;border:1px solid var(--line);color:var(--text);padding:10px 12px;border-radius:12px}
.btn{display:inline-flex;align-items:center;gap:10px;padding:13px 18px;border-radius:14px;border:1px solid var(--line);font-weight:700;transition:.2s ease;cursor:pointer}
.btn:hover{transform:translateY(-1px)}
.btn.primary{background:linear-gradient(135deg,var(--cyan),var(--mint));color:#051018;border:none;box-shadow:0 12px 30px rgba(89,215,255,.22)}
.btn.secondary{background:rgba(255,255,255,.02)}
.hero{padding:84px 0 44px}
.hero-grid{display:grid;grid-template-columns:1.12fr .88fr;gap:34px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:10px;color:var(--cyan);font-size:.82rem;font-weight:800;text-transform:uppercase;letter-spacing:.12em;padding:8px 12px;border:1px solid rgba(89,215,255,.2);border-radius:999px;background:rgba(89,215,255,.06)}
.hero h1,.page-hero h1{font-size:clamp(2.2rem,4.8vw,4.7rem);line-height:1.02;margin:18px 0 16px;letter-spacing:-.04em}
.hero p.lead,.page-hero p{font-size:1.08rem;color:var(--muted);max-width:64ch}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:28px}
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:28px}
.stat{background:linear-gradient(180deg, rgba(255,255,255,.03), rgba(255,255,255,.015));border:1px solid var(--line);border-radius:20px;padding:18px;box-shadow:var(--shadow)}
.stat strong{display:block;font-size:1.4rem}
.stat span{color:var(--muted);font-size:.92rem}
.panel{background:linear-gradient(180deg, rgba(255,255,255,.03), rgba(255,255,255,.02));border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
.hero-card{padding:22px;position:relative;overflow:hidden}
.hero-card:before{content:"";position:absolute;inset:auto -70px -70px auto;width:180px;height:180px;background:radial-gradient(circle,var(--cyan),transparent 62%);opacity:.15;filter:blur(10px)}
.grid-2,.grid-3,.grid-4{display:grid;gap:18px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.section{padding:34px 0}
.section-lg{padding:64px 0}
.section-title{display:flex;justify-content:space-between;align-items:end;gap:18px;margin-bottom:20px}
.section-title h2{margin:0;font-size:clamp(1.5rem,2vw,2.2rem);letter-spacing:-.03em}
.section-title p{margin:0;color:var(--muted);max-width:60ch}
.card{padding:22px}
.kicker{font-size:.78rem;text-transform:uppercase;letter-spacing:.12em;color:var(--gold);font-weight:800}
.card h3{margin:8px 0 10px;font-size:1.2rem}
.muted{color:var(--muted)}
.article-card,.dataset-card,.feature-card,.method-card{height:100%}
.article-card .meta,.dataset-card .meta{display:flex;gap:12px;flex-wrap:wrap;color:var(--muted);font-size:.86rem;margin-bottom:10px}
.tag-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:12px}
.tag{padding:7px 10px;border-radius:999px;background:rgba(89,215,255,.08);border:1px solid rgba(89,215,255,.14);color:#d9f5ff;font-size:.78rem;font-weight:700}
.split{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.timeline{display:grid;gap:14px}
.timeline-item{padding:18px;border-left:3px solid var(--cyan);background:rgba(255,255,255,.02);border-radius:0 18px 18px 0}
.metric-box{padding:20px;text-align:center}
.metric-box strong{display:block;font-size:2rem;color:var(--mint)}
.metric-box span{color:var(--muted);font-size:.9rem}
.table-wrap{overflow:auto}
table{width:100%;border-collapse:collapse}
th,td{padding:14px 12px;border-bottom:1px solid var(--line);text-align:left}
th{color:#cde7f7;font-size:.86rem;text-transform:uppercase;letter-spacing:.08em}
.quote{padding:24px;border-left:4px solid var(--gold);font-size:1.1rem;background:rgba(248,201,107,.05);border-radius:0 18px 18px 0}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
label{display:block;font-weight:700;margin-bottom:8px}
input,textarea,select{width:100%;padding:14px 15px;border-radius:14px;border:1px solid var(--line);background:#091521;color:var(--text);font:inherit}
textarea{min-height:150px;resize:vertical}
.checkline{display:flex;gap:10px;align-items:flex-start;color:var(--muted);font-size:.94rem}
.checkline input{width:auto;margin-top:4px}
.notice{padding:16px 18px;border-radius:16px;border:1px solid rgba(248,201,107,.2);background:rgba(248,201,107,.06);color:#f7e8bf}
.footer{padding:40px 0 70px;border-top:1px solid var(--line);margin-top:40px}
.footer-grid{display:grid;grid-template-columns:1.3fr .7fr .7fr;gap:20px}
.footer a{color:var(--muted)}
.footer a:hover{color:var(--text)}
.page-hero{padding:62px 0 24px}
.breadcrumbs{color:var(--muted);font-size:.92rem}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:26px}
.article-body{padding:30px}
.article-body h2{font-size:1.6rem;letter-spacing:-.03em;margin-top:1.8em}
.article-body p,.article-body li{color:#d8e6f2}
.article-body ul{padding-left:18px}
.sidebar{padding:22px;height:fit-content;position:sticky;top:90px}
.inline-list{display:grid;gap:10px;padding-left:0;list-style:none}
.inline-list a{color:#d8f6ff}
.archive-list{display:grid;gap:14px}
.archive-item{padding:18px}
.center{text-align:center}
@media (max-width:960px){
  .hero-grid,.split,.article-layout,.footer-grid{grid-template-columns:1fr}
  .grid-4{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:780px){
  .menu-btn{display:inline-flex}
  .nav{display:none;position:absolute;left:16px;right:16px;top:72px;flex-direction:column;align-items:flex-start;padding:18px;background:#0b1722;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow)}
  .nav.open{display:flex}
  .grid-3,.grid-2,.grid-4,.stats,.form-grid{grid-template-columns:1fr}
  .hero{padding-top:52px}
  .hero h1,.page-hero h1{font-size:clamp(2rem,12vw,3.2rem)}
}

.hero {
  animation: fadeUp 0.8s ease-out;
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}
.hero h1 {
  position: relative;
}

.hero h1::after {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(0,255,200,0.15), transparent);
  transform: translateY(-50%);
  z-index: -1;
}

.btn-primary {
  transition: all 0.3s ease;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 25px rgba(0, 255, 200, 0.3);
}

.scroll-hint {
  text-align: center;
  opacity: 0.6;
  margin-top: 20px;
  animation: bounce 1.5s infinite;
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(6px); }
}