:root{color-scheme:dark;--bg:#030923;--panel:#0b1438;--line:#263865;--text:#f4f7ff;--muted:#aeb9d5;--accent:#58dcff;--blue:#286cff;--green:#73e7bd;--red:#ff9cab}*{box-sizing:border-box}body{margin:0;background:radial-gradient(circle at 80% 0,#102154 0,transparent 35%),var(--bg);color:var(--text);font:16px/1.5 Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}main{width:min(980px,calc(100% - 2rem));margin:0 auto;padding:4rem 0}header img{width:min(330px,70vw);margin-bottom:3rem}.eyebrow{color:var(--accent);font-size:.78rem;font-weight:800;letter-spacing:.2em;text-transform:uppercase}h1{max-width:850px;margin:.5rem 0;font-size:clamp(2.5rem,7vw,5.5rem);line-height:.95;letter-spacing:-.05em}h2{margin:.25rem 0 1rem;font-size:1.75rem}.lead{max-width:760px;color:var(--muted);font-size:1.1rem}.upload,.result{margin-top:2rem;padding:clamp(1.25rem,4vw,2.5rem);border:1px solid var(--line);border-radius:18px;background:rgba(11,20,56,.88)}form{display:grid;gap:1rem}label{display:grid;gap:.5rem;color:var(--muted);font-weight:700}input[type=file]{padding:1rem;border:1px dashed var(--accent);border-radius:10px;background:#07102f;color:var(--text)}.confirm{display:flex;align-items:flex-start;font-weight:500}.confirm input{margin-top:.35rem}button{min-height:56px;border:0;border-radius:10px;background:var(--blue);color:#fff;font:inherit;font-weight:800;cursor:pointer}.muted,.engines{color:var(--muted);font-size:.85rem}.result.valid{border-color:rgba(115,231,189,.55)}.result.invalid{border-color:rgba(255,156,171,.55)}dl{display:grid;gap:.5rem}dl div{display:grid;grid-template-columns:8rem 1fr;gap:1rem;padding:.65rem 0;border-bottom:1px solid var(--line)}dt{color:var(--muted)}dd{margin:0;min-width:0;overflow-wrap:anywhere}.checks{display:grid;gap:.5rem;margin:1.5rem 0}.checks p{margin:0}.checks span{display:inline-grid;width:1.7rem;height:1.7rem;margin-right:.6rem;place-items:center;border-radius:50%;background:#17264e;color:var(--accent);font-weight:900}details{color:var(--muted)}li{margin:.5rem 0}footer{padding:2rem;text-align:center;color:var(--muted);font-size:.85rem}a{color:var(--accent)}code{font-size:.78rem}@media(max-width:600px){main{padding:2rem 0}dl div{grid-template-columns:1fr;gap:.15rem}}