:root{
  --slate:#0f172a; --slate2:#1e293b; --bg:#f8fafc; --card:#ffffff;
  --border:#e2e8f0; --ink:#0f172a; --muted:#64748b; --accent:#0284c7;
  --accent-soft:#e0f2fe; --green:#16a34a;
  --mono:'JetBrains Mono',ui-monospace,monospace; --sans:'Inter',system-ui,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--sans);background:var(--bg);color:var(--ink);line-height:1.6;font-size:16px;-webkit-font-smoothing:antialiased}
.layout{display:grid;grid-template-columns:264px minmax(0,1fr);min-height:100vh}
.sidebar{background:var(--slate);color:#cbd5e1;padding:28px 22px;display:flex;flex-direction:column;gap:6px;position:sticky;top:0;height:100vh;overflow:auto}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;margin-bottom:18px}
.brand svg{width:34px;height:34px;flex:none}
.brand-name{font-weight:800;font-size:20px;color:#fff;letter-spacing:-.3px}
.brand-name em{font-style:normal;color:#38bdf8}
.side-label{font-size:11px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:#64748b;margin:14px 0 6px}
.side-nav{display:flex;flex-direction:column;gap:2px}
.side-nav a{color:#cbd5e1;text-decoration:none;font-size:14px;padding:8px 10px;border-radius:8px;border-left:3px solid transparent}
.side-nav a:hover{background:var(--slate2);color:#fff}
.side-cta{background:#0284c7 !important;color:#fff !important;font-weight:700;text-align:center;margin-bottom:4px}
.side-cta:hover{background:#0369a1 !important}
.side-foot{margin-top:auto;font-size:12px;color:#64748b;border-top:1px solid var(--slate2);padding-top:14px;line-height:1.7}
.main-col{min-width:0}
.topbar{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:14px 32px;background:var(--card);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:20}
.breadcrumb{font-size:13px;color:var(--muted)}
.breadcrumb a{color:var(--accent);text-decoration:none;font-weight:600}
.privacy-chip{display:inline-flex;align-items:center;gap:7px;font-size:12.5px;font-weight:700;color:#0369a1;background:var(--accent-soft);border:1px solid #bae6fd;padding:6px 12px;border-radius:999px;white-space:nowrap}
.privacy-chip svg{width:15px;height:15px}
.content{padding:36px 32px 0;max-width:1080px}
.hero{margin-bottom:26px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--accent);background:var(--accent-soft);border:1px solid #bae6fd;padding:6px 12px;border-radius:6px;margin-bottom:14px}
.eyebrow .dot{width:8px;height:8px;border-radius:50%;background:var(--accent)}
h1{font-size:clamp(28px,4vw,42px);font-weight:800;letter-spacing:-.8px;line-height:1.15;margin-bottom:12px}
h1 .hl{color:var(--accent)}
.lede{font-size:17px;color:var(--muted);max-width:68ch}
.lede strong{color:var(--ink)}
.stat-row{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin:26px 0}
.stat{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:18px;display:flex;gap:14px;align-items:center}
.stat svg{width:34px;height:34px;flex:none}
.stat .num{font-family:var(--mono);font-size:26px;font-weight:700;font-variant-numeric:tabular-nums;line-height:1.1}
.stat .lbl{font-size:12.5px;color:var(--muted);line-height:1.4}
.panel{background:var(--card);border:1px solid var(--border);border-radius:14px;margin:26px 0;overflow:hidden}
.panel-bar{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:13px 20px;background:var(--slate);color:#e2e8f0;font-family:var(--mono);font-size:13px}
.panel-bar .traffic{display:flex;gap:7px}
.panel-bar .traffic i{width:11px;height:11px;border-radius:50%;background:#334155}
.panel-bar .traffic i:first-child{background:#f87171}
.panel-bar .traffic i:nth-child(2){background:#fbbf24}
.panel-bar .traffic i:nth-child(3){background:#34d399}
.panel-body{padding:24px}
.opts{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:18px;margin-bottom:20px}
.opt-label{display:block;font-size:12px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);margin-bottom:8px}
.num-row{display:flex;align-items:center;gap:10px}
input[type=range]{flex:1;accent-color:var(--accent)}
input[type=number]{width:70px;font-family:var(--mono);font-size:15px;padding:7px 9px;border:1px solid var(--border);border-radius:8px;font-variant-numeric:tabular-nums}
.range-val{font-family:var(--mono);font-weight:700;font-size:18px;min-width:38px;text-align:right;font-variant-numeric:tabular-nums}
.seg{display:flex;flex-wrap:wrap;gap:8px}
.seg button{font-family:var(--sans);font-size:13.5px;font-weight:600;padding:8px 13px;border:1px solid var(--border);border-radius:8px;background:#f1f5f9;color:var(--ink);cursor:pointer}
.seg button[aria-pressed=true]{background:var(--slate);color:#fff;border-color:var(--slate)}
.opt-hint{font-size:12.5px;color:var(--muted);margin-top:7px}
.actions{display:flex;flex-wrap:wrap;gap:10px;margin:4px 0 18px}
.btn{font-family:var(--sans);font-size:14.5px;font-weight:700;padding:11px 20px;border-radius:9px;border:1px solid var(--border);cursor:pointer;text-decoration:none;display:inline-flex;align-items:center;gap:8px;background:#fff;color:var(--ink)}
.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff}
.btn.primary:hover{background:#0369a1}
.btn.ghost:hover{background:#f1f5f9}
.btn svg{width:16px;height:16px}
.output{border:1px solid var(--border);border-radius:10px;overflow:hidden}
.output-head{display:flex;justify-content:space-between;align-items:center;padding:10px 16px;background:#f1f5f9;font-family:var(--mono);font-size:12.5px;color:var(--muted);border-bottom:1px solid var(--border)}
.out-list{list-style:none;max-height:420px;overflow:auto}
.out-list li{display:flex;align-items:center;gap:12px;padding:11px 16px;border-bottom:1px solid var(--border);font-family:var(--mono);font-size:14.5px}
.out-list li:last-child{border-bottom:none}
.out-list li:nth-child(even){background:#f8fafc}
.out-idx{color:var(--muted);font-size:12px;min-width:30px;text-align:right;font-variant-numeric:tabular-nums}
.out-name{flex:1;overflow-wrap:anywhere}
.out-title{color:var(--muted);font-family:var(--sans);font-size:13px}
.copy-btn{font-family:var(--sans);font-size:12.5px;font-weight:700;padding:6px 12px;border:1px solid var(--border);border-radius:7px;background:#fff;cursor:pointer;color:var(--accent);white-space:nowrap}
.copy-btn:hover{background:var(--accent-soft)}
.copy-btn.ok{color:var(--green);border-color:#bbf7d0;background:#f0fdf4}
.limits{border:1.5px dashed #f59e0b;background:#fffbeb;border-radius:10px;padding:18px 20px;margin-top:20px}
.limits h3{font-size:14px;font-weight:800;letter-spacing:.06em;text-transform:uppercase;color:#92400e;margin-bottom:10px;display:flex;align-items:center;gap:8px}
.limits h3 svg{width:17px;height:17px}
.limits ul{margin:0;padding-left:20px;color:#78350f;font-size:14.5px}
.limits li{margin-bottom:6px}
.limits code{font-family:var(--mono);font-size:13px;background:#fef3c7;padding:1px 6px;border-radius:4px}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:26px 0}
.step{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:20px}
.step .n{font-family:var(--mono);font-size:12px;font-weight:700;color:#fff;background:var(--slate);width:28px;height:28px;border-radius:8px;display:flex;align-items:center;justify-content:center;margin-bottom:10px}
.step h3{font-size:16px;margin-bottom:6px}
.step p{font-size:14px;color:var(--muted)}
.link-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:14px;margin:26px 0}
.link-card{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:20px;text-decoration:none;color:var(--ink);display:block}
.link-card:hover{border-color:var(--accent);box-shadow:0 4px 14px rgba(2,132,199,.1)}
.link-card h3{font-size:16px;margin-bottom:6px;color:var(--accent)}
.link-card p{font-size:13.5px;color:var(--muted)}
.prose{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:32px;margin:26px 0}
.prose h2{font-size:22px;margin:28px 0 10px;letter-spacing:-.3px}
.prose h2:first-child{margin-top:0}
.prose h3{font-size:17px;margin:22px 0 8px}
.prose p{margin-bottom:14px;color:#334155}
.prose ul,.prose ol{margin:0 0 14px 22px;color:#334155}
.prose li{margin-bottom:7px}
.prose table{width:100%;border-collapse:collapse;margin:18px 0;font-size:14.5px}
.prose th{background:var(--slate);color:#fff;text-align:left;padding:10px 14px;font-size:13px;letter-spacing:.04em}
.prose th:first-child{border-radius:8px 0 0 0}
.prose th:last-child{border-radius:0 8px 0 0}
.prose td{border:1px solid var(--border);padding:10px 14px;vertical-align:top}
.prose tr:nth-child(even) td{background:#f8fafc}
.prose code{font-family:var(--mono);font-size:13.5px;background:#f1f5f9;padding:2px 7px;border-radius:5px}
.faq-table{width:100%;border-collapse:collapse;margin:18px 0;font-size:15px}
.faq-table th{background:var(--slate);color:#fff;text-align:left;padding:11px 16px;font-size:13px;letter-spacing:.05em;text-transform:uppercase}
.faq-table th:first-child{border-radius:8px 0 0 0}
.faq-table th:last-child{border-radius:0 8px 0 0}
.faq-table td{border:1px solid var(--border);padding:14px 16px;vertical-align:top}
.faq-table tr:nth-child(even) td{background:#f8fafc}
.faq-table .q{font-weight:700;min-width:220px}
.warn-box{border:1.5px dashed #f59e0b;background:#fffbeb;border-radius:10px;padding:16px 18px;margin:18px 0;font-size:14.5px;color:#78350f}
.form-card{border:1px solid var(--border);border-radius:12px;padding:24px;background:#f8fafc;margin:18px 0}
.field{margin-bottom:14px}
.field label{display:block;font-size:13px;font-weight:700;margin-bottom:6px}
.field input,.field textarea{width:100%;font-family:var(--sans);font-size:14.5px;padding:10px 12px;border:1px solid var(--border);border-radius:8px;background:#fff}
.field textarea{min-height:120px;resize:vertical}
.form-note{font-size:12.5px;color:var(--muted);margin-top:10px}
.form-ok{display:none;margin-top:14px;background:#f0fdf4;border:1px solid #bbf7d0;color:#166534;padding:12px 14px;border-radius:8px;font-size:14px}
.cta-box{background:var(--slate);color:#e2e8f0;border-radius:12px;padding:26px;margin:24px 0;text-align:center}
.cta-box h3{color:#fff;font-size:20px;margin-bottom:8px}
.cta-box p{color:#94a3b8;font-size:14.5px;margin-bottom:16px}
.site-footer{border-top:1px solid var(--border);margin-top:44px;padding:32px 0 40px}
.foot-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:24px;margin-bottom:22px}
.foot-brand{font-weight:800;font-size:17px;margin-bottom:8px}
.foot-grid p{font-size:13.5px;color:var(--muted)}
.foot-h{font-size:12px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--ink);margin-bottom:10px}
.foot-grid nav a{display:block;font-size:13.5px;color:var(--muted);text-decoration:none;margin-bottom:7px}
.foot-grid nav a:hover{color:var(--accent)}
.foot-note{font-size:12.5px;color:var(--muted);border-top:1px solid var(--border);padding-top:18px}
.page-hero{margin-bottom:6px}
.notfound{text-align:center;padding:80px 0 50px}
.notfound .code{font-family:var(--mono);font-size:clamp(70px,12vw,130px);font-weight:700;color:var(--accent);margin:0}
.notfound h1{font-size:26px;margin:4px 0 10px}
.notfound p{color:var(--muted);max-width:50ch;margin:0 auto 24px}
@media(max-width:900px){
  .layout{grid-template-columns:1fr}
  .sidebar{position:static;height:auto}
  .stat-row{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:1fr}
  .content{padding:24px 18px 0}
  .topbar{padding:12px 18px}
  .prose{padding:22px}
}