:root{color-scheme:light;--ink:#171719;--muted:#707074;--line:#d8d8dc;--soft:#f4f4f6;--blue:#3157e2;--blue-dark:#203aa5;--good:#14794f;--bad:#bd2c2c;font-family:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:#ececf0;color:var(--ink)}*{box-sizing:border-box}body{margin:0;min-height:100vh;background:radial-gradient(circle at 75% 0,#fff 0,#f7f7f8 36%,#e9e9ed 100%);font-size:17px;line-height:1.45}.shell{width:min(980px,calc(100% - 32px));margin:40px auto;padding:54px 62px;background:rgba(255,255,255,.96);border:1px solid #e4e4e8;border-radius:28px;box-shadow:0 30px 80px rgba(31,31,40,.10)}.intro{padding-bottom:24px;border-bottom:1px solid var(--line);margin-bottom:36px}.kicker{margin:0 0 10px;color:var(--blue);font-size:12px;font-weight:850;letter-spacing:.16em}.intro h1{font-size:clamp(34px,5vw,54px);line-height:1.02;letter-spacing:-.045em;margin:0 0 16px}.intro p:last-child{max-width:760px;margin:0;color:var(--muted);font-size:18px}form{display:grid;gap:30px}.field-section,.upload-card{display:grid;gap:10px}label,.upload-heading label{font-weight:800;font-size:20px}label span,.upload-heading span{color:var(--muted);font-size:15px;font-weight:600;margin-left:6px}input,select{width:100%;min-height:54px;border:1px solid #bfc0c5;border-radius:12px;background:#fff;padding:12px 15px;color:var(--ink);font:inherit;transition:border .16s,box-shadow .16s}input:focus,select:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 4px rgba(49,87,226,.13)}input[type=file]{padding:9px 10px;background:var(--soft);font-size:15px}input[type=file]::file-selector-button{border:0;border-radius:8px;padding:8px 12px;margin-right:10px;background:#fff;font:inherit;font-weight:700;color:var(--ink);box-shadow:0 1px 3px rgba(0,0,0,.12);cursor:pointer}.help,.output-name,.file-state,.limit p,.status,footer p{margin:0;color:var(--muted);font-size:15px}.output-name strong{color:var(--ink)}.time-grid,.upload-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}.upload-card{padding:22px;border:1px solid var(--line);border-radius:16px;background:linear-gradient(145deg,#fff,#fafafd)}.upload-heading{display:flex;align-items:baseline;justify-content:space-between}.file-state{font-variant-numeric:tabular-nums}details{border:1px solid var(--line);border-radius:14px;padding:17px 18px;background:#fbfbfc}summary{font-weight:800;cursor:pointer}.checks{display:flex;gap:24px;flex-wrap:wrap;margin:18px 0 8px}.checks label{display:flex;gap:8px;align-items:center;font-size:15px}.checks input{width:18px;min-height:18px;accent-color:var(--blue)}.limit{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:19px 21px;border-radius:15px;background:#f0f3ff;border:1px solid #d9e0ff}.limit strong{font-size:19px}.size-pill{white-space:nowrap;padding:7px 10px;border-radius:999px;background:#fff;color:var(--blue-dark);font-size:13px;font-weight:800}button{min-height:64px;border:0;border-radius:14px;background:var(--blue);color:#fff;font:inherit;font-size:19px;font-weight:850;cursor:pointer;box-shadow:0 10px 26px rgba(49,87,226,.24);transition:transform .16s,background .16s}button:hover{background:var(--blue-dark);transform:translateY(-1px)}button:disabled{background:#d3d3d7;box-shadow:none;cursor:not-allowed;transform:none}.status{min-height:24px;text-align:center}.status.good{color:var(--good)}.status.bad{color:var(--bad)}footer{border-top:1px solid var(--line);margin-top:36px;padding-top:24px}@media(max-width:720px){body{font-size:16px}.shell{width:100%;margin:0;padding:32px 20px;border:0;border-radius:0;min-height:100vh}.time-grid,.upload-grid{grid-template-columns:1fr}.limit{align-items:flex-start;flex-direction:column}.intro h1{font-size:39px}}