:root{
  --bg:#f4f6fa; --card:#fff; --ink:#12233b; --muted:#5b6b80; --line:#e4e9f1;
  --brand:#0d2b4e; --brand2:#1f5fa8; --ok:#137a3f; --okbg:#e6f5ec;
  --bad:#b02a2a; --badbg:#fbeaea; --warn:#8a6d00; --warnbg:#fdf5df;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);
  font:16px/1.55 system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif}
.wrap{max-width:920px;margin:0 auto;padding:0 18px}
a{color:var(--brand2)}

.hd{background:var(--brand);color:#fff}
.hd-in{display:flex;align-items:center;justify-content:space-between;height:58px}
.logo{font-weight:800;font-size:20px;letter-spacing:.2px}
.logo span{color:#8fc0ff;font-weight:700}
.hd-badge{font-size:12px;background:rgba(255,255,255,.14);padding:5px 10px;border-radius:999px}

.hero{padding:34px 0 10px}
h1{font-size:30px;line-height:1.15;margin:0 0 10px}
.lead{color:var(--muted);max-width:70ch;margin:0}

.tabs{display:flex;gap:6px;margin:18px 0 0}
.tab{appearance:none;border:1px solid var(--line);border-bottom:none;background:#eef2f8;
  color:var(--muted);font-size:15px;font-weight:600;padding:11px 20px;border-radius:10px 10px 0 0;cursor:pointer}
.tab.active{background:var(--card);color:var(--brand);box-shadow:0 -1px 2px rgba(16,35,59,.04)}
.tabs + .checker{margin-top:0;border-top-left-radius:0}

.card{background:var(--card);border:1px solid var(--line);border-radius:14px;
  padding:22px;margin:18px 0;box-shadow:0 1px 2px rgba(16,35,59,.04)}

.sresults{margin-top:16px}
.sitem{display:flex;justify-content:space-between;align-items:center;gap:12px;
  padding:12px 14px;border:1px solid var(--line);border-radius:10px;margin-bottom:8px;background:#fbfcfe}
.sitem .si-main{min-width:0}
.sitem .si-name{font-weight:700}
.sitem .si-sub{font-size:13px;color:var(--muted)}
.sitem .si-uid{font-size:13px;color:var(--brand);font-weight:600;margin-top:2px}
.sitem .btn-sm{flex:none;padding:8px 14px;font-size:14px;font-weight:700;color:#fff;background:var(--brand2);
  border:0;border-radius:8px;cursor:pointer}
.sitem .btn-sm:hover{background:#17518f}
.sempty{color:var(--muted);font-size:14.5px}
.checker{padding:24px}
.lbl{display:block;font-size:13px;font-weight:600;color:var(--muted);margin-bottom:8px}
.row{display:flex;gap:10px}
#uid{flex:1;min-width:0;font-size:19px;letter-spacing:.5px;padding:14px 16px;
  border:1.5px solid var(--line);border-radius:10px;text-transform:uppercase;background:#fbfcfe}
#uid:focus{outline:none;border-color:var(--brand2);background:#fff}
#btn{padding:0 26px;font-size:16px;font-weight:700;color:#fff;background:var(--brand2);
  border:0;border-radius:10px;cursor:pointer;white-space:nowrap}
#btn:hover{background:#17518f}
#btn:disabled{opacity:.6;cursor:progress}
.hint{margin-top:10px;font-size:13px;color:var(--muted)}
.hint code{background:#eef2f8;padding:2px 6px;border-radius:5px;font-size:12.5px}

.result{margin-top:20px;border-radius:12px;padding:18px 18px;border:1px solid var(--line)}
.result.ok{background:var(--okbg);border-color:#b7e2c6}
.result.bad{background:var(--badbg);border-color:#f0c4c4}
.result.warn{background:var(--warnbg);border-color:#efe0a6}
.r-head{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:800}
.r-ico{width:26px;height:26px;border-radius:50%;display:inline-flex;align-items:center;
  justify-content:center;color:#fff;font-size:16px;flex:none}
.ok .r-ico{background:var(--ok)} .bad .r-ico{background:var(--bad)} .warn .r-ico{background:var(--warn)}
.r-body{margin-top:12px;font-size:15px}
.r-tbl{width:100%;border-collapse:collapse;margin-top:6px}
.r-tbl td{padding:6px 0;vertical-align:top;border-top:1px solid rgba(18,35,59,.08)}
.r-tbl td.k{color:var(--muted);width:150px;white-space:nowrap}
.r-tbl td.v{font-weight:600}
.r-note{margin-top:10px;font-size:12.5px;color:var(--muted)}
.spin{display:inline-block;width:16px;height:16px;border:2px solid rgba(255,255,255,.5);
  border-top-color:#fff;border-radius:50%;animation:sp .7s linear infinite}
@keyframes sp{to{transform:rotate(360deg)}}

.info-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.info{margin:0}
.info h2{font-size:16px;margin:0 0 8px}
.info p{margin:0;color:var(--muted);font-size:14.5px}
.faq h2{font-size:18px;margin:0 0 12px}
.faq details{border-top:1px solid var(--line);padding:12px 0}
.faq details:first-of-type{border-top:0}
.faq summary{cursor:pointer;font-weight:600}
.faq p{color:var(--muted);margin:8px 0 0;font-size:14.5px}

.ft{margin-top:34px;background:#fff;border-top:1px solid var(--line)}
.ft-in{padding:22px 18px;display:flex;flex-direction:column;gap:10px;font-size:13px;color:var(--muted)}
.ft-legal{display:flex;flex-direction:column;gap:3px}

@media(max-width:640px){
  h1{font-size:25px}
  .info-grid{grid-template-columns:1fr}
  .row{flex-direction:column}
  #btn{padding:14px}
}