:root{--blue:#155eef;--ink:#142039;--muted:#586477;--line:#e1e6ee;--bg:#f6f8fc}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:24px}body{margin:0;color:var(--ink);background:var(--bg);font:16px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}a{color:var(--blue);text-underline-offset:4px}button,input{font:inherit}button,a,input,summary{ -webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{opacity:.5;cursor:not-allowed}button:focus-visible,a:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid #f4ad28;outline-offset:4px}header,footer,main{max-width:1180px;margin:auto}header{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:25px 28px;border-bottom:1px solid 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12px}.file-name{font-size:14px;font-weight:650;overflow-wrap:anywhere;line-height:1.4;margin-bottom:4px}.file-info{font-size:12px;color:var(--muted);margin:0;line-height:1.55}.file-actions{display:flex;gap:8px;align-items:center}.file-actions button,.file-actions a{font-size:12px;color:var(--blue);background:#eef3ff;border:0;padding:7px 9px;border-radius:5px;text-decoration:none}.file-actions .remove{color:var(--muted);background:none}.success{color:#08754e}.error{color:#bd2323}.summary{background:#edf8f3;padding:12px;border-radius:8px;font-size:14px;margin:18px 0}.notice,#message:not(:empty){margin:16px 0;padding:12px;background:#fff7e7;color:#785111;font-size:14px;border-radius:8px}.steps{display:grid;grid-template-columns:1.05fr 1fr 1fr 1fr;gap:28px;padding:66px 0;border-bottom:1px solid var(--line)}.step{font-size:13px;color:var(--blue);display:block;margin-bottom:13px;font-weight:750}.steps h3{font-size:16px;margin-bottom:9px}.steps 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p{font-size:12px;margin:5px 0}footer small{width:100%;font-size:11px;color:var(--muted)}.prose{max-width:760px;margin:60px auto 80px}.prose h1{font-size:42px}.prose h2{font-size:23px;margin-top:35px}.prose p{font-size:16px}.skip{position:absolute;top:-100px}.skip:focus{top:5px;left:5px;background:white;padding:12px;z-index:20}[hidden]{display:none!important}dialog{border:1px solid var(--line);border-radius:14px;max-width:min(950px,94vw);max-height:90vh;padding:24px}dialog::backdrop{background:#142039aa}.preview-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.preview-grid img{width:100%;max-height:60vh;object-fit:contain;background:repeating-conic-gradient(#e8edf5 0% 25%,white 0% 50%) 0/16px 16px}.preview-grid p{font-size:13px;margin:0 0 8px}.dialog-head{display:flex;justify-content:space-between;gap:20px}.dialog-head h2{font-size:20px}.dialog-head button{align-self:flex-start}
@media(max-width:900px){.workspace{grid-template-columns:minmax(0,1fr) 270px}.tool-main,.settings{padding:22px}.steps{grid-template-columns:1fr 1fr}.guide{gap:30px}.file-row{grid-template-columns:45px minmax(0,1fr)}.thumb{width:45px;height:45px}.file-actions{grid-column:2;flex-wrap:wrap}}@media(max-width:650px){header{padding:20px;gap:18px;flex-wrap:wrap}header nav{gap:22px}.brand{font-size:21px}.brand-small{font-size:9px}main{padding:0 16px}.intro{padding:34px 0 22px}h1{font-size:37px;letter-spacing:-1.5px}.intro>p:last-child{font-size:15px}.desktop{display:none}.workspace{grid-template-columns:1fr;border-radius:14px}.settings{border-left:0;border-top:1px solid var(--line)}.settings h2{margin-bottom:22px}.settings-foot{display:none}.drop{padding:25px 12px}.tool-main{padding:20px}.badge{font-size:10px}.steps{padding:40px 0;gap:28px 22px}.steps>div{grid-column:1/-1}.guide{grid-template-columns:1fr;padding:40px 0}.guide h2,.faq h2{font-size:29px}.faq{padding-bottom:40px}.prose{margin:35px auto}.prose h1{font-size:34px}.preview-grid{grid-template-columns:1fr}.preview-grid img{max-height:30vh}footer{padding:25px 20px}footer nav{gap:18px}.actions .primary{font-size:13px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}
.quality-guide strong{white-space:nowrap;font-size:18px}