:root{
  --cert-brand:#0a3d62;
  --cert-dark:#07314f;
  --cert-accent:#52c0d9;
  --cert-soft:#eaf7fa;
  --cert-bg:#f5f7fa;
  --cert-text:#172b3a;
  --cert-muted:#667987;
  --cert-line:#dfe7ec;
  --cert-success:#177657;
  --cert-success-soft:#e8f7f0;
  --cert-danger:#a93636;
  --cert-danger-soft:#fff0f0;
}
body{background:var(--cert-bg);color:var(--cert-text);overflow-x:hidden}
.certificate-page{max-width:1180px;margin:0 auto;padding:72px 24px 90px;text-align:left}
.validation-hero{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(360px,.75fr);gap:42px;align-items:center;min-height:430px}
.validation-eyebrow{display:block;margin-bottom:9px;color:#208fa7;font-size:12px;font-weight:850;letter-spacing:.1em;text-transform:uppercase}
.validation-copy h1{max-width:650px;margin:0;color:var(--cert-brand);font-size:clamp(38px,6vw,68px);line-height:1.05}
.validation-copy p{max-width:650px;margin:20px 0 0;color:var(--cert-muted);font-size:18px;line-height:1.7;text-align:left}
.validation-card{padding:28px;border:1px solid var(--cert-line);border-radius:22px;background:#fff;box-shadow:0 20px 55px rgba(10,61,98,.1)}
.validation-card label{display:block;margin-bottom:8px;color:var(--cert-text);font-weight:800}
.validation-input-row{display:flex;gap:9px}
.validation-input-row input{min-width:0;flex:1;height:48px;border:1px solid var(--cert-line);border-radius:12px;padding:0 13px;outline:0;text-transform:uppercase}
.validation-input-row input:focus{border-color:var(--cert-accent);box-shadow:0 0 0 3px rgba(82,192,217,.15)}
.validation-input-row button{height:48px;border:0;border-radius:12px;padding:0 18px;background:var(--cert-brand);color:#fff;font-weight:850}
.validation-card small{display:block;margin-top:9px;color:var(--cert-muted)}
.validation-result{margin:8px 0 60px;padding:28px;border:1px solid var(--cert-line);border-radius:20px;background:#fff;box-shadow:0 14px 40px rgba(10,61,98,.07)}
.validation-result.valid{border-color:#bfe6d6;background:linear-gradient(135deg,#fff,var(--cert-success-soft))}
.validation-result.invalid{border-color:#f0cccc;background:linear-gradient(135deg,#fff,var(--cert-danger-soft))}
.result-heading{display:flex;align-items:center;gap:14px;margin-bottom:22px}
.result-icon{display:grid;place-items:center;width:48px;height:48px;border-radius:50%;font-size:22px;font-weight:900}
.valid .result-icon{background:var(--cert-success-soft);color:var(--cert-success)}
.invalid .result-icon{background:var(--cert-danger-soft);color:var(--cert-danger)}
.result-heading h2{margin:0;text-align:left;color:var(--cert-text)}
.result-heading p{margin:3px 0 0;color:var(--cert-muted);font-size:14px;text-align:left}
.result-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.result-field{padding:14px;border:1px solid var(--cert-line);border-radius:13px;background:rgba(255,255,255,.78)}
.result-field span,.result-field strong{display:block}
.result-field span{color:var(--cert-muted);font-size:11px;text-transform:uppercase;letter-spacing:.05em}
.result-field strong{margin-top:4px;color:var(--cert-text);overflow-wrap:anywhere}
.result-field.wide{grid-column:span 2}
.security-section{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:46px;align-items:start;padding-top:54px;border-top:1px solid var(--cert-line)}
.security-section h2{margin:0;color:var(--cert-brand);font-size:34px;text-align:left}
.security-section p{margin:14px 0 0;color:var(--cert-muted);font-size:16px;text-align:left}
.security-grid{display:grid;gap:12px}
.security-grid article{display:grid;grid-template-columns:42px 1fr;column-gap:13px;padding:18px;border:1px solid var(--cert-line);border-radius:16px;background:#fff}
.security-grid b{grid-row:1/3;display:grid;place-items:center;width:42px;height:42px;border-radius:12px;background:var(--cert-soft);color:var(--cert-brand)}
.security-grid strong{font-size:15px}.security-grid span{color:var(--cert-muted);font-size:13px}
@media(max-width:850px){.validation-hero,.security-section{grid-template-columns:1fr}.validation-hero{min-height:0}.result-grid{grid-template-columns:1fr 1fr}}
@media(max-width:560px){.certificate-page{padding:45px 14px 60px}.validation-copy h1{font-size:40px}.validation-copy p{font-size:16px}.validation-card{padding:18px}.validation-input-row{flex-direction:column}.result-grid{grid-template-columns:1fr}.result-field.wide{grid-column:auto}.validation-result{padding:19px}}