:root {
  --bg:#ffffff; --card:#ffffff; --text:#0f172a; --muted:#475569; --line:#e2e8f0;
  --brand:#0ea5e9; --accent:#22c55e;
  --shadow:0 10px 30px rgba(2,6,23,.08); --radius:18px; --max:1120px;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;font-family: ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Arial,"Apple Color Emoji","Segoe UI Emoji"; color:var(--text);
background: radial-gradient(1200px 600px at 20% -10%, rgba(14,165,233,.12), transparent 60%),
radial-gradient(900px 520px at 90% 10%, rgba(34,197,94,.10), transparent 55%), var(--bg);}
a{color:inherit; text-decoration:none} a:hover{text-decoration:underline}
.container{max-width:var(--max); margin:0 auto; padding:18px 18px 54px}
.header{position:sticky; top:0; backdrop-filter:saturate(180%) blur(10px); background: rgba(255,255,255,.80);
border-bottom:1px solid var(--line); z-index:30}
.nav{display:flex; align-items:center; justify-content:space-between; gap:14px; padding:14px 18px; max-width:var(--max); margin:0 auto}
.brand{display:flex; align-items:center; gap:10px; font-weight:900}
.logo{width:34px;height:34px;border-radius:12px; background: linear-gradient(135deg, var(--brand), var(--accent)); box-shadow: var(--shadow)}
.navlinks{display:flex; gap:10px; flex-wrap:wrap; align-items:center}
.pill{padding:9px 12px; border:1px solid var(--line); border-radius:999px; color:var(--muted); background:#fff}
.pill:hover{border-color: rgba(14,165,233,.35); text-decoration:none}
.pill.primary{border-color: rgba(14,165,233,.35); color:#075985; background: rgba(14,165,233,.08)}
.hero{padding:44px 0 10px}
.hero-grid{display:grid; grid-template-columns: 1.2fr .8fr; gap:16px; align-items:stretch}
@media (max-width: 900px){.hero-grid{grid-template-columns:1fr}}
.h1{font-size: clamp(30px, 4vw, 50px); line-height:1.03; margin:0 0 10px; letter-spacing:-.02em}
.sub{font-size:16px; color:var(--muted); line-height:1.65; margin:0 0 18px}
.cta{display:flex; gap:10px; flex-wrap:wrap; margin-top: 14px}
.btn{display:inline-flex; align-items:center; justify-content:center; gap:10px; padding:12px 14px; border-radius:12px;
border:1px solid var(--line); background:#fff; box-shadow: 0 1px 0 rgba(15,23,42,.04); font-weight:800}
.btn:hover{text-decoration:none; border-color: rgba(14,165,233,.35)}
.btn.primary{border-color: rgba(14,165,233,.35); background: linear-gradient(180deg, rgba(14,165,233,.12), rgba(14,165,233,.06)); color:#075985}
.card{background:var(--card); border:1px solid var(--line); border-radius:var(--radius); box-shadow: var(--shadow)}
.card.pad{padding:18px}
.section{padding:22px 0}
.grid{display:grid; grid-template-columns: repeat(12, 1fr); gap:14px}
.col-4{grid-column: span 4} .col-6{grid-column: span 6} .col-8{grid-column: span 8} .col-12{grid-column: span 12}
@media (max-width: 900px){.col-4,.col-6,.col-8{grid-column: span 12}}
.feature{padding:16px}
.feature h3{margin:0 0 6px} .feature p{margin:0; color:var(--muted); line-height:1.55}
.badge{display:inline-flex; gap:8px; align-items:center; padding:7px 10px; border-radius:999px;
border:1px solid rgba(14,165,233,.30); color:#075985; background: rgba(14,165,233,.08); font-weight:900; font-size:12px}
.small{font-size:13px; color:var(--muted)}
.footer{margin-top:34px; padding-top:22px; border-top:1px solid var(--line); color:var(--muted); font-size:14px}
.footergrid{display:grid; grid-template-columns: 1.3fr 1fr 1fr; gap:16px}
@media (max-width: 900px){.footergrid{grid-template-columns:1fr}}
ul.clean{list-style:none; padding:0; margin:10px 0} ul.clean li{margin:8px 0}
hr.sep{border:none; border-top:1px solid var(--line); margin: 18px 0}
.notice{font-size:13px; color:var(--muted); line-height:1.6}
.breadcrumbs{font-size:13px; color:var(--muted); margin:14px 0 8px}
.breadcrumbs a{color:#0b4a6f}
.prose{line-height:1.78; color:#0f172a}
.prose h1{font-size:34px; margin:10px 0 10px}
.prose h2{font-size:22px; margin:20px 0 8px}
.prose p{margin:10px 0}
.prose li{margin:8px 0}
.table{width:100%; border-collapse:collapse}
.table th,.table td{border:1px solid var(--line); padding:10px; text-align:left; vertical-align:top}
.input{width:100%; padding:11px 12px; border-radius:12px; border:1px solid var(--line); outline:none; background:#fff}
.input:focus{border-color: rgba(14,165,233,.45); box-shadow: 0 0 0 4px rgba(14,165,233,.10)}
.row{display:flex; gap:10px; flex-wrap:wrap; align-items:center}
.row > *{flex:1} .row .tight{flex:0 0 auto}
.toast{position:fixed; bottom:16px; left:50%; transform:translateX(-50%); background:#0f172a; color:#fff;
padding:10px 12px; border-radius:999px; font-size:13px; opacity:0; pointer-events:none; transition:opacity .2s ease}
.toast.show{opacity:1}