:root{
  --bg:#f6f8fc; --bg-2:#eef2f9;
  --surface:#ffffff; --surface-2:#f9fafb;
  --text:#0b1220; --muted:#5b6473; --border:#e5e9f0;
  --primary:#2563eb; --primary-2:#1e40af; --primary-soft:#dbeafe;
  --success:#16a34a; --warn:#d97706; --danger:#dc2626;
  --radius:14px; --shadow:0 10px 30px -12px rgba(15,23,42,.18);
}
@media (prefers-color-scheme: dark){
  :root{
    --bg:#0a0f1c; --bg-2:#0d1426;
    --surface:#10172a; --surface-2:#0d1426;
    --text:#e8ecf5; --muted:#9aa4b8; --border:#1e2944;
    --primary:#3b82f6; --primary-2:#60a5fa; --primary-soft:#1e293b;
    --shadow:0 14px 40px -16px rgba(0,0,0,.6);
  }
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:'Plus Jakarta Sans',system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  color:var(--text); background:
    radial-gradient(1200px 600px at 90% -10%, color-mix(in oklab, var(--primary) 18%, transparent), transparent),
    radial-gradient(900px 500px at -10% 10%, color-mix(in oklab, var(--primary) 14%, transparent), transparent),
    var(--bg);
  -webkit-font-smoothing:antialiased; line-height:1.55;
}
a{color:var(--primary); text-decoration:none}
a:hover{text-decoration:underline}
.container{width:100%; max-width:1120px; margin:0 auto; padding:0 20px}
.muted{color:var(--muted)}
.small{font-size:.85rem}

/* Header */
.site-header{position:sticky; top:0; z-index:30; backdrop-filter:saturate(140%) blur(14px);
  background:color-mix(in oklab, var(--surface) 75%, transparent);
  border-bottom:1px solid var(--border);}
.header-row{display:flex; align-items:center; gap:16px; padding:12px 20px}
.brand{display:flex; align-items:center; gap:10px; color:inherit}
.brand:hover{text-decoration:none}
.logo{width:38px;height:38px;border-radius:10px; display:grid; place-items:center;
  font-weight:800; color:#fff; background:linear-gradient(135deg,var(--primary),var(--primary-2));
  box-shadow:0 6px 18px -8px var(--primary)}
.brand-text{display:flex; flex-direction:column; line-height:1.1}
.brand-text small{color:var(--muted); font-size:.78rem}
.nav{display:none; gap:18px; margin-left:auto}
.nav a{color:var(--muted); font-weight:500}
.nav a:hover{color:var(--text)}
.status{margin-left:auto; display:flex; align-items:center; gap:8px; font-size:.85rem; color:var(--muted);
  padding:6px 12px; border:1px solid var(--border); border-radius:999px; background:var(--surface)}
.status .dot{width:8px;height:8px;border-radius:50%; background:#94a3b8; box-shadow:0 0 0 0 rgba(148,163,184,.6); animation:pulse 1.6s infinite}
.status.online .dot{background:var(--success)}
.status.slow .dot{background:var(--warn)}
.status.down .dot{background:var(--danger)}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(59,130,246,.5)}70%{box-shadow:0 0 0 10px rgba(59,130,246,0)}100%{box-shadow:0 0 0 0 rgba(59,130,246,0)}}
@media (min-width:820px){ .nav{display:flex} .status{margin-left:0} }

/* Hero */
.hero{padding:48px 0 24px}
.hero-grid{display:grid; gap:28px; grid-template-columns:1fr}
@media(min-width:960px){ .hero-grid{grid-template-columns:1.05fr 1fr; align-items:start} .hero{padding:72px 0 40px} }
.badge{display:inline-block; padding:6px 12px; border-radius:999px; font-size:.78rem; font-weight:600;
  color:var(--primary); background:var(--primary-soft); border:1px solid color-mix(in oklab, var(--primary) 30%, transparent)}
h1{font-size:clamp(2rem,4.6vw,3.2rem); line-height:1.08; margin:14px 0 12px; letter-spacing:-.02em; font-weight:800}
.grad{background:linear-gradient(135deg,var(--primary),#22d3ee); -webkit-background-clip:text; background-clip:text; color:transparent}
.lead{font-size:1.05rem; color:var(--muted); max-width:52ch}
.bullets{padding:0; list-style:none; margin:18px 0 0; display:grid; gap:8px; color:var(--text)}
.bullets li{font-weight:500}

/* Card */
.card{background:var(--surface); border:1px solid var(--border); border-radius:var(--radius); padding:22px; box-shadow:var(--shadow)}
.form-card h2{margin:0 0 4px; font-size:1.25rem}
.form-card p.muted{margin:0 0 16px}

form .field{display:flex; flex-direction:column; gap:6px; margin-bottom:14px}
form .row{display:grid; gap:12px; grid-template-columns:1fr 1fr}
form label{font-size:.85rem; font-weight:600; color:var(--text)}
form input, form select{
  appearance:none; -webkit-appearance:none;
  font:inherit; color:var(--text);
  background:var(--surface-2); border:1px solid var(--border);
  border-radius:10px; padding:11px 13px; transition:border-color .15s, box-shadow .15s, background .15s;
}
form input:focus, form select:focus{outline:none; border-color:var(--primary); box-shadow:0 0 0 4px color-mix(in oklab, var(--primary) 20%, transparent); background:var(--surface)}
form input.invalid, form select.invalid{border-color:var(--danger); box-shadow:0 0 0 4px color-mix(in oklab, var(--danger) 18%, transparent)}
.captcha{background:var(--surface-2); padding:12px; border:1px dashed var(--border); border-radius:10px}
.btn{display:inline-flex; align-items:center; justify-content:center; gap:10px; cursor:pointer;
  font:inherit; font-weight:700; padding:12px 18px; border-radius:10px; border:1px solid transparent; transition:transform .05s, background .15s, color .15s}
.btn:active{transform:translateY(1px)}
.btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary-2)); color:#fff; width:100%; font-size:1rem; box-shadow:0 12px 24px -12px var(--primary)}
.btn-primary:hover{filter:brightness(1.05)}
.btn-ghost{background:transparent; color:var(--muted); border-color:var(--border)}
.btn-ghost:hover{color:var(--text); background:var(--surface-2)}
.btn .spinner{width:18px;height:18px;border-radius:50%; border:2.5px solid rgba(255,255,255,.35); border-top-color:#fff; animation:spin .8s linear infinite; display:none}
.btn.loading .spinner{display:inline-block}
.btn.loading .btn-label{opacity:.8}
@keyframes spin{to{transform:rotate(360deg)}}
.hint{margin:8px 0 0; min-height:1.2em; font-size:.88rem}
.hint.error{color:var(--danger)}
.hint.ok{color:var(--success)}

/* Results */
#results{margin-top:8px}
.results-head{display:flex; justify-content:space-between; align-items:center; gap:10px; margin-bottom:6px}
.results-head h2{margin:0; font-size:1.2rem}
.mirrors{display:grid; gap:10px; margin-top:14px; grid-template-columns:1fr}
@media(min-width:640px){ .mirrors{grid-template-columns:1fr 1fr 1fr} }
.mirror{display:flex; flex-direction:column; gap:8px; padding:14px; background:var(--surface-2); border:1px solid var(--border); border-radius:12px}
.mirror .name{font-weight:700; display:flex; align-items:center; gap:8px}
.mirror .actions{display:flex; gap:8px; flex-wrap:wrap}
.mirror .actions a, .mirror .actions button{flex:1; padding:9px 12px; border-radius:9px; font-size:.88rem; font-weight:600; border:1px solid var(--border); background:var(--surface); color:var(--text); text-align:center; cursor:pointer}
.mirror .actions a.primary{background:var(--primary); color:#fff; border-color:transparent}
.mirror .actions a:hover{text-decoration:none; filter:brightness(1.04)}
.advanced{margin-top:18px; border-top:1px solid var(--border); padding-top:14px}
.advanced summary{cursor:pointer; font-weight:600; color:var(--primary)}
.iframe-wrap{margin-top:12px; border:1px solid var(--border); border-radius:12px; overflow:hidden; background:#fff}
.iframe-wrap iframe{display:block; width:100%; height:560px; border:0; background:#fff}

/* Features */
.grid-3{display:grid; gap:16px; grid-template-columns:1fr; margin:36px 0}
@media(min-width:760px){ .grid-3{grid-template-columns:repeat(3,1fr)} }
.feature .ico{width:36px;height:36px;border-radius:10px; background:var(--primary-soft); color:var(--primary); display:grid; place-items:center; font-weight:800; margin-bottom:10px}
.feature h3{margin:0 0 4px; font-size:1.05rem}
.feature p{margin:0; color:var(--muted)}

/* FAQ */
#faq{margin-bottom:48px}
#faq details{padding:12px 0; border-bottom:1px solid var(--border)}
#faq details:last-child{border-bottom:0}
#faq summary{cursor:pointer; font-weight:600}
#faq p{margin:8px 0 0; color:var(--muted)}

footer{border-top:1px solid var(--border); background:var(--surface)}
.footer-row{padding:18px 20px; display:flex; flex-direction:column; gap:6px}
.footer-row p{margin:0}