:root{
  --bg:#0f172a;
  --bg2:#111827;
  --panel:#ffffff;
  --muted:#6b7280;
  --text:#111827;
  --line:#e5e7eb;
  --blue:#2563eb;
  --blue2:#1d4ed8;
  --purple:#7c3aed;
  --green:#10b981;
  --orange:#f59e0b;
  --red:#ef4444;
  --soft:#f8fafc;
  --shadow:0 20px 45px rgba(15,23,42,.10);
}
*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;color:var(--text);background:#f3f6fb}.login-page,.install-page{min-height:100vh;background:radial-gradient(circle at 20% 20%,#334155 0,#111827 42%,#020617 100%);display:flex;align-items:center;justify-content:center;padding:24px}.auth-card,.install-card{width:420px;max-width:100%;background:rgba(255,255,255,.96);border-radius:24px;padding:28px;box-shadow:0 30px 80px rgba(0,0,0,.35)}.install-card{width:760px}.brand{display:flex;align-items:center;gap:12px;margin-bottom:22px}.logo{width:44px;height:44px;border-radius:14px;background:linear-gradient(135deg,var(--blue),var(--purple));display:flex;align-items:center;justify-content:center;color:#fff;font-weight:900;box-shadow:0 12px 28px rgba(37,99,235,.35)}.brand h1{font-size:22px;line-height:1;margin:0}.brand p{margin:5px 0 0;color:var(--muted);font-size:13px}.form-row{margin-bottom:14px}.form-row label{font-size:13px;color:#374151;margin-bottom:7px;display:block;font-weight:600}.input,.select,textarea{width:100%;border:1px solid var(--line);border-radius:12px;padding:12px 14px;font-size:14px;outline:none;background:#fff;transition:.2s}.input:focus,.select:focus,textarea:focus{border-color:var(--blue);box-shadow:0 0 0 4px rgba(37,99,235,.08)}textarea{min-height:100px;resize:vertical}.btn{border:none;border-radius:12px;padding:12px 16px;background:var(--blue);color:#fff;font-weight:700;cursor:pointer;text-decoration:none;display:inline-flex;align-items:center;justify-content:center;gap:8px;transition:.2s}.btn:hover{background:var(--blue2);transform:translateY(-1px)}.btn-light{background:#eef2ff;color:#1d4ed8}.btn-light:hover{background:#dbeafe}.btn-dark{background:#111827}.btn-green{background:#059669}.btn-red{background:#dc2626}.btn-block{width:100%}.help{color:var(--muted);font-size:12px;line-height:1.7}.alert{padding:12px 14px;border-radius:12px;font-size:14px;margin:12px 0}.alert-error{background:#fef2f2;color:#991b1b;border:1px solid #fecaca}.alert-ok{background:#ecfdf5;color:#065f46;border:1px solid #a7f3d0}.alert-warn{background:#fffbeb;color:#92400e;border:1px solid #fde68a}.app{display:flex;min-height:100vh}.sidebar{width:248px;background:#0b1220;color:#cbd5e1;padding:20px 16px;position:fixed;top:0;left:0;bottom:0}.side-brand{display:flex;align-items:center;gap:12px;padding:10px 8px 22px;border-bottom:1px solid rgba(255,255,255,.08)}.side-brand .logo{width:38px;height:38px;border-radius:12px}.side-brand strong{display:block;color:#fff;font-size:16px}.side-brand span{font-size:12px;color:#94a3b8}.nav{padding:16px 0}.nav a{display:flex;align-items:center;gap:10px;color:#cbd5e1;text-decoration:none;padding:12px 12px;border-radius:12px;margin:4px 0;font-size:14px}.nav a:hover,.nav a.active{background:rgba(37,99,235,.22);color:#fff}.main{margin-left:248px;width:calc(100% - 248px);min-height:100vh}.topbar{height:72px;background:rgba(255,255,255,.86);backdrop-filter:blur(12px);border-bottom:1px solid #e5e7eb;display:flex;align-items:center;justify-content:space-between;padding:0 28px;position:sticky;top:0;z-index:10}.topbar h2{margin:0;font-size:20px}.topbar p{margin:4px 0 0;color:var(--muted);font-size:13px}.content{padding:26px 28px 46px}.grid{display:grid;gap:18px}.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}.card{background:#fff;border-radius:20px;padding:20px;box-shadow:var(--shadow);border:1px solid rgba(226,232,240,.9)}.stat{position:relative;overflow:hidden}.stat:after{content:"";position:absolute;right:-25px;top:-35px;width:110px;height:110px;background:linear-gradient(135deg,rgba(37,99,235,.14),rgba(124,58,237,.10));border-radius:50%}.stat .label{color:var(--muted);font-size:13px}.stat .num{font-size:30px;font-weight:900;margin-top:8px}.stat .sub{font-size:12px;color:#94a3b8;margin-top:4px}.hero{background:linear-gradient(135deg,#0f172a,#1e3a8a 48%,#6d28d9);color:#fff;border-radius:26px;padding:30px;box-shadow:0 24px 65px rgba(30,58,138,.28);position:relative;overflow:hidden}.hero:before{content:"";position:absolute;right:-80px;top:-90px;width:260px;height:260px;background:rgba(255,255,255,.11);border-radius:50%}.hero h1{font-size:30px;margin:0 0 10px}.hero p{max-width:780px;color:#dbeafe;line-height:1.8;margin:0}.collector-layout{display:grid;grid-template-columns:420px 1fr;gap:20px;align-items:start}.section-title{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}.section-title h3{margin:0;font-size:17px}.pill{display:inline-flex;align-items:center;padding:5px 10px;border-radius:999px;background:#eef2ff;color:#1d4ed8;font-size:12px;font-weight:700}.muted{color:var(--muted)}.table-wrap{overflow:auto}.table{width:100%;border-collapse:collapse}.table th,.table td{padding:13px 12px;border-bottom:1px solid #eef2f7;text-align:left;font-size:13px;vertical-align:top}.table th{font-size:12px;color:#64748b;background:#f8fafc;font-weight:700;white-space:nowrap}.table tr:hover td{background:#fbfdff}.video-title{max-width:430px;line-height:1.5;font-weight:700}.url{max-width:260px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.badge{display:inline-block;padding:4px 8px;border-radius:999px;font-size:12px;font-weight:700;background:#f1f5f9;color:#334155}.badge-hot{background:#fff7ed;color:#c2410c}.badge-ok{background:#ecfdf5;color:#047857}.badge-fail{background:#fef2f2;color:#b91c1c}.quick-filters{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:14px}.filter-chip{border:1px solid var(--line);background:#fff;border-radius:999px;padding:8px 12px;font-size:13px;text-decoration:none;color:#334155}.filter-chip.active{background:#111827;color:#fff;border-color:#111827}.result-box{background:#020617;color:#dbeafe;border-radius:18px;padding:16px;font-family:Consolas,monospace;font-size:13px;white-space:pre-wrap;min-height:130px;line-height:1.6}.empty{padding:36px;text-align:center;color:#64748b}.home-wrap{min-height:100vh;background:#f8fafc}.home-nav{height:76px;display:flex;align-items:center;justify-content:space-between;padding:0 8%;background:#fff;border-bottom:1px solid #eef2f7}.home-hero{padding:70px 8%;display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:center}.home-hero h1{font-size:52px;line-height:1.1;margin:0 0 18px;letter-spacing:-2px}.home-hero p{font-size:18px;color:#475569;line-height:1.9}.mock-dashboard{background:#0f172a;color:#e5e7eb;border-radius:28px;padding:22px;box-shadow:0 30px 80px rgba(15,23,42,.35)}.mock-line{display:flex;justify-content:space-between;gap:14px;padding:13px;border-radius:16px;background:rgba(255,255,255,.06);margin-top:10px}.footer-note{padding:20px 8%;color:#94a3b8;font-size:13px}@media(max-width:1100px){.grid-4{grid-template-columns:repeat(2,1fr)}.collector-layout{grid-template-columns:1fr}.home-hero{grid-template-columns:1fr}.sidebar{position:static;width:100%;height:auto}.app{display:block}.main{margin-left:0;width:100%}}@media(max-width:640px){.grid-4,.grid-3,.grid-2{grid-template-columns:1fr}.topbar{height:auto;padding:16px}.content{padding:18px}.home-hero h1{font-size:36px}.home-nav{padding:0 18px}.home-hero{padding:40px 18px}}