:root{
  --bg:#eef2f8;
  --ink:#16213a;
  --ink-soft:#5b6b85;
  --line:#dde4ef;
  --brand:#3a6df0;
  --brand2:#7b5cf0;
  --ok:#2e7d32;
  --warn:#ef6c00;
  --bad:#c62828;
  --card:#ffffff;
  --shadow:0 10px 30px rgba(30,50,90,.10);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;
  background:var(--bg);color:var(--ink);line-height:1.6;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
.bg-orbs{position:fixed;inset:0;z-index:-1;overflow:hidden}
.bg-orbs span{position:absolute;border-radius:50%;filter:blur(70px);opacity:.35}
.bg-orbs span:nth-child(1){width:420px;height:420px;background:#7b5cf0;top:-120px;left:-80px}
.bg-orbs span:nth-child(2){width:380px;height:380px;background:#3a6df0;bottom:-120px;right:-60px}
.bg-orbs span:nth-child(3){width:300px;height:300px;background:#28c0a0;top:40%;left:55%;opacity:.2}

a{color:var(--brand);text-decoration:none}

/* Nav */
.nav{max-width:1080px;margin:0 auto;padding:18px 22px;display:flex;justify-content:space-between;align-items:center}
.brand{display:flex;gap:12px;align-items:center}
.logo{width:42px;height:42px;border-radius:12px;background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;display:grid;place-items:center;font-weight:800;font-size:16px;box-shadow:var(--shadow)}
.brand-text b{display:block;font-size:16px}
.brand-text small{color:var(--ink-soft);font-size:12px}
.nav-links{display:flex;align-items:center;gap:18px}
.nav-links a{color:var(--ink-soft);font-size:14px}

main{max-width:1080px;margin:0 auto;padding:0 22px 60px}

/* Buttons */
.btn{border:none;cursor:pointer;font-size:14px;font-weight:600;padding:10px 18px;border-radius:10px;transition:.18s;font-family:inherit}
.btn.primary{background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;box-shadow:0 6px 18px rgba(58,109,240,.35)}
.btn.primary:hover{transform:translateY(-1px);box-shadow:0 10px 24px rgba(58,109,240,.45)}
.btn.ghost{background:rgba(255,255,255,.7);color:var(--ink);border:1px solid var(--line)}
.btn.ghost:hover{background:#fff}
.btn.lg{padding:13px 26px;font-size:15px}

/* Hero */
.hero{text-align:center;padding:54px 0 30px}
.pill{display:inline-block;background:rgba(58,109,240,.10);color:var(--brand);border:1px solid rgba(58,109,240,.25);padding:6px 14px;border-radius:999px;font-size:13px;font-weight:600}
.hero h1{font-size:38px;line-height:1.25;margin:18px 0 14px;font-weight:800;letter-spacing:-.5px}
.hero h1 .grad{background:linear-gradient(135deg,var(--brand),var(--brand2));-webkit-background-clip:text;background-clip:text;color:transparent}
.lead{max-width:720px;margin:0 auto 22px;color:var(--ink-soft);font-size:16px}
.hero-cta{display:flex;gap:14px;justify-content:center}
.trust{margin-top:22px;display:flex;gap:18px;justify-content:center;flex-wrap:wrap;color:var(--ink-soft);font-size:13px}

/* Panel */
.panel{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:26px;box-shadow:var(--shadow);margin-bottom:26px}
.panel-head{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;margin-bottom:18px}
.panel-head h2{margin:0;font-size:20px}
.mode-switch{display:flex;background:#eef1f7;border-radius:10px;padding:4px}
.mode{border:none;background:transparent;padding:8px 14px;border-radius:8px;cursor:pointer;font-size:13px;font-weight:600;color:var(--ink-soft);font-family:inherit}
.mode.active{background:#fff;color:var(--brand);box-shadow:0 2px 6px rgba(0,0,0,.08)}

.form{display:flex;flex-wrap:wrap;gap:16px}
.field{display:flex;flex-direction:column;flex:1;min-width:240px}
.field.full{width:100%;flex-basis:100%}
.field label{font-size:13px;font-weight:600;margin-bottom:6px;color:var(--ink)}
.field input{font-family:inherit;font-size:14px;padding:11px 13px;border:1px solid var(--line);border-radius:10px;background:#fafbfe;color:var(--ink);transition:.15s}
.field input:focus{outline:none;border-color:var(--brand);background:#fff;box-shadow:0 0 0 3px rgba(58,109,240,.12)}
.field small{color:var(--ink-soft);font-size:12px;margin-top:5px}
.field small.secure{color:var(--ok)}
.ref-box{width:100%;flex-basis:100%;border-top:1px dashed var(--line);padding-top:14px;display:flex;flex-wrap:wrap;gap:16px}
.ref-label{color:var(--brand2);font-weight:700}
.actions{margin-top:6px}
.report-toggle{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-soft);margin:2px 0 8px;cursor:pointer}
.report-toggle input{width:16px;height:16px;accent-color:var(--brand)}
.report-toggle b{color:var(--bad)}
.hidden{display:none !important}

.progress{height:8px;background:#eef1f7;border-radius:999px;overflow:hidden}
#progressBar{height:100%;width:0;background:linear-gradient(90deg,var(--brand),var(--brand2));transition:width .3s}
.log{margin-top:12px;background:#0f1729;color:#cdd6e6;font-family:ui-monospace,Menlo,Consolas,monospace;font-size:12px;padding:12px 14px;border-radius:10px;max-height:180px;overflow:auto;white-space:pre-wrap;line-height:1.5}

/* Result */
.result{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:26px;box-shadow:var(--shadow);margin-bottom:26px}
.result-head{display:flex;align-items:center;gap:26px;flex-wrap:wrap}
.score-ring{position:relative;width:120px;height:120px;flex:none}
.ring-bg{fill:none;stroke:#eef1f7;stroke-width:10}
.ring-fg{fill:none;stroke:var(--brand);stroke-width:10;stroke-linecap:round;stroke-dasharray:326.7;stroke-dashoffset:326.7;transition:stroke-dashoffset 1s ease,stroke .6s}
.score-num{position:absolute;inset:0;display:grid;place-content:center;text-align:center}
.score-num b{font-size:34px;line-height:1}
.score-num small{color:var(--ink-soft)}
.verdict-box{flex:1;min-width:260px}
.verdict-level{font-size:22px;font-weight:800}
.verdict-text{color:var(--ink-soft);margin-top:4px}
.verdict-meta{color:var(--ink-soft);font-size:12px;margin-top:8px}

.metrics{display:flex;flex-wrap:wrap;gap:12px;margin:22px 0}
.metric{flex:1;min-width:150px;background:#f7f9fc;border:1px solid var(--line);border-radius:12px;padding:14px}
.metric span{display:block;color:var(--ink-soft);font-size:12px}
.metric b{font-size:22px}
.metric small{color:var(--ink-soft);font-size:11px}

.section-title{font-size:15px;font-weight:700;margin:22px 0 10px;padding-left:10px;border-left:3px solid var(--brand)}
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:12px}
table{width:100%;border-collapse:collapse;font-size:13px}
th,td{border-bottom:1px solid var(--line);padding:9px 11px;text-align:left;vertical-align:top}
th{background:#f7f9fc;color:var(--ink-soft);font-weight:600;position:sticky;top:0}
tr.fail{background:#fdecea}
tr.warn{background:#fff4e5}
tr.pass{background:#edf7ed}
tr.na{color:var(--ink-soft)}
.badge{display:inline-block;min-width:22px;text-align:center;font-weight:700}
.badge.ok{color:var(--ok)}.badge.no{color:var(--bad)}.badge.na{color:var(--ink-soft)}
.cat{color:var(--ink-soft);font-size:11px;white-space:nowrap}
.prompt{max-width:240px}
.resp{max-width:380px;white-space:pre-wrap;word-break:break-word;font-size:12px}
.det{color:var(--ink-soft);font-size:12px;max-width:220px}

.fingerprints{display:flex;flex-direction:column;gap:12px}
.fp{display:flex;gap:14px;align-items:flex-start;background:#f7f9fc;border:1px solid var(--line);border-radius:12px;padding:14px}
.fp-ico{font-size:20px;flex:none}
.fp-body{flex:1}
.fp-title{font-weight:700;font-size:14px}
.fp-detail{color:var(--ink-soft);font-size:13px;margin-top:3px}
.fp-text{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:11px;color:var(--ink);background:#fff;border:1px solid var(--line);border-radius:8px;padding:8px;margin-top:8px;white-space:pre-wrap;word-break:break-word;max-height:160px;overflow:auto}
.tag{display:inline-block;font-size:11px;font-weight:700;padding:2px 8px;border-radius:999px;margin-left:8px}
.tag.pass{background:#e6f4ea;color:var(--ok)}
.tag.fail{background:#fdecea;color:var(--bad)}
.tag.supported{background:#e8f0fe;color:var(--brand)}
.tag.unsupported{background:#eef1f7;color:var(--ink-soft)}
.tag.error{background:#fff4e5;color:var(--warn)}

/* Info sections */
.info{max-width:1080px;margin:0 auto 26px;padding:0 22px}
.info h2{font-size:24px;margin:10px 0 18px}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px}
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:18px;box-shadow:var(--shadow)}
.card-ico{font-size:26px}
.card h3{margin:10px 0 6px;font-size:16px}
.card p{color:var(--ink-soft);font-size:13px;margin:0}
.note{background:rgba(58,109,240,.06);border:1px solid rgba(58,109,240,.2);border-radius:12px;padding:14px 16px;color:var(--ink-soft);font-size:14px;margin-top:16px}

.faq details{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:14px 16px;margin-bottom:10px}
.faq summary{cursor:pointer;font-weight:600;font-size:14px}
.faq p{color:var(--ink-soft);font-size:13px;margin:10px 0 0}

footer{text-align:center;color:var(--ink-soft);font-size:12px;padding:30px 22px;border-top:1px solid var(--line);max-width:1080px;margin:0 auto}

@media(max-width:640px){
  .hero h1{font-size:28px}
  .result-head{gap:16px}
  .nav-links a{display:none}
}