:root{--bg:#f5f8fc;--card:#fff;--line:#dbe5f2;--ink:#10203b;--muted:#6f819b;--blue:#2f7ef7;--blue-soft:#eaf2ff;--green:#53b77a;--shadow:0 16px 42px rgba(58,85,120,.11);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}*{box-sizing:border-box}body{margin:0;color:var(--ink);background:radial-gradient(circle at 12% 0%,#fff 0 18%,transparent 40%),linear-gradient(180deg,#f8fbff,var(--bg))}button,select,input{font:inherit}button:disabled,select:disabled,input:disabled{opacity:.48;cursor:not-allowed!important}.site-header{width:100%;padding:18px 20px 4px}.brand{width:min(1040px,calc(100% - 24px));margin:0 auto;display:flex;align-items:center;gap:11px;color:inherit;text-decoration:none}.brand-mark{width:40px;height:38px;display:grid;place-items:center;border-radius:12px;color:#fff;background:linear-gradient(145deg,#2f7ef7,#68a4ff);box-shadow:0 8px 18px rgba(47,126,247,.25);font-size:10px;font-weight:900}.brand>span:last-child{display:flex;flex-direction:column;line-height:1.15}.brand strong{font-size:15px}.brand small{margin-top:4px;color:var(--muted);font-size:10px}.page-shell{width:min(1040px,calc(100% - 24px));margin:12px auto 60px}.ad-slot{min-height:92px;margin:14px 0;border:1px dashed #cdd9e9;border-radius:14px;display:grid;place-items:center;align-content:center;gap:4px;color:#9aa8ba;background:rgba(255,255,255,.72)}.ad-slot span{font-size:9px;font-weight:800;letter-spacing:.12em}.ad-slot div{font-size:12px}.converter-card,.how-card,.info-card{background:var(--card);border:1px solid #e0e8f2;border-radius:20px;box-shadow:var(--shadow);overflow:hidden}.settings-bar{display:grid;grid-template-columns:minmax(160px,1fr) 44px minmax(160px,1fr) minmax(180px,.9fr);gap:12px;align-items:end;padding:14px 16px;background:#fbfdff;border-bottom:1px solid var(--line)}.options-row{display:flex;align-items:end;gap:12px;padding:12px 16px 0}.field{min-width:0;display:flex;flex-direction:column;gap:6px}.field label,.eyebrow{color:#5f7391;font-size:10px;font-weight:850;letter-spacing:.08em}.compact-field{width:190px}.page-range-field{width:min(280px,100%)}select,input,.readonly-field{height:42px;width:100%;border:1px solid #d5e1ef;border-radius:11px;background:#fff;color:var(--ink);font-weight:750;padding:0 12px;outline:none}input{font-weight:650}select:focus,input:focus{border-color:#8fb9ff;box-shadow:0 0 0 3px #edf4ff}.readonly-field{display:flex;align-items:center;color:#60738f}.swap-icon{width:44px;height:42px;display:grid;place-items:center;border-radius:11px;color:var(--blue);background:var(--blue-soft);font-weight:900}.toolbar{display:flex;justify-content:center;gap:12px;padding:22px 16px 14px}.btn{min-height:42px;padding:0 18px;border:0;border-radius:10px;cursor:pointer;font-size:12px;font-weight:850;letter-spacing:.015em;transition:.16s ease}.btn:hover:not(:disabled){transform:translateY(-1px)}.btn.primary{color:#fff;background:var(--blue);box-shadow:0 8px 18px rgba(47,126,247,.22)}.btn.danger{color:#9c4f4f;background:#f6d2d2}.btn.convert{color:#fff;background:#61778f;min-width:210px}.btn.success{color:#fff;background:var(--green)}.btn.secondary{color:#536a84;background:#eef3f8}.drop-zone{margin:0 32px 18px;min-height:310px;border:1.5px dashed #9cc2ff;border-radius:16px;background:linear-gradient(180deg,#fbfdff,#fff);display:grid;place-items:center;cursor:pointer;outline:none;transition:.17s ease}.drop-zone:hover,.drop-zone:focus,.drop-zone.dragover{border-color:var(--blue);background:#f7fbff}.drop-zone.locked{cursor:default}.drop-placeholder{min-height:308px;width:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:9px;text-align:center;padding:20px}.upload-icon{width:44px;height:44px;display:grid;place-items:center;border-radius:50%;color:var(--blue);background:var(--blue-soft);font-size:22px;font-weight:900}.drop-placeholder strong{font-size:17px}.drop-placeholder>span{color:var(--muted);font-size:12px}.format-chips{margin-top:6px;display:flex;justify-content:center;flex-wrap:wrap;gap:6px}.format-chips span{padding:5px 9px;border-radius:7px;color:#5f7592;background:#edf3fb;font-size:9px;font-weight:850}.selected-preview{width:100%;padding:16px}.pdf-preview-shell{position:relative;width:min(480px,100%);height:360px;margin:0 auto;display:grid;place-items:center;overflow:hidden;border-radius:13px;background:#eef3f8;box-shadow:0 8px 20px rgba(20,35,60,.10)}#previewCanvas{display:block;max-width:100%;max-height:100%;width:auto;height:auto;background:#fff}.preview-loading{position:absolute;inset:0;display:grid;place-items:center;color:#72839b;background:rgba(250,252,255,.86);font-size:11px;font-weight:800}.preview-info{width:min(680px,100%);margin:12px auto 0;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:11px 12px;border:1px solid #e2eaf4;border-radius:12px;background:#fff}.preview-info>div{min-width:0;display:flex;flex-direction:column;gap:4px}.preview-info strong{max-width:600px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:13px}.preview-info span{color:var(--muted);font-size:10px}.mini-remove{flex:0 0 auto;width:30px;height:30px;border:1px solid #d9e4f1;border-radius:9px;background:#fff;color:#60718b;cursor:pointer;font-size:17px}.progress-wrap{margin:0 32px 18px;padding:15px;border:1px solid #e0e8f2;border-radius:14px;background:#fbfdff}.progress-top{display:flex;justify-content:space-between;gap:16px;font-size:12px}.progress-top span{color:var(--blue);font-weight:850}.progress-track{height:8px;margin-top:11px;overflow:hidden;border-radius:999px;background:#e9eff6}.progress-bar{width:0%;height:100%;border-radius:inherit;background:linear-gradient(90deg,#2f7ef7,#63a2ff);transition:width .15s ease}.progress-wrap p{margin:10px 0 0;color:var(--muted);font-size:10px;line-height:1.45}.action-row{display:flex;justify-content:center;padding:0 16px 20px}.result-section{margin:0 32px 20px;border:1px solid #dbe9df;border-radius:15px;background:#fbfffc;overflow:hidden}.result-head{padding:14px 16px;display:flex;align-items:center;justify-content:space-between;gap:16px;border-bottom:1px solid #e5efe8}.result-head>div{min-width:0;display:flex;flex-direction:column;gap:4px}.result-head strong{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:13px}.result-head small{color:var(--muted);font-size:10px}.ready-pill{flex:0 0 auto;padding:5px 9px;border-radius:999px;color:#3f8f5d;background:#e2f4e8;font-size:9px;font-weight:850}.result-preview{padding:14px 16px 0;text-align:center}.result-preview img{max-width:240px;max-height:220px;object-fit:contain;border:1px solid #e1e8f0;border-radius:10px;background:#fff;box-shadow:0 6px 16px rgba(20,35,60,.08)}.result-actions{padding:13px 16px;display:flex;gap:10px;flex-wrap:wrap}.privacy-note{margin:0;padding:0 32px 22px;color:#8291a6;text-align:center;font-size:9px;line-height:1.5}.how-card,.info-card{margin-top:16px;padding:22px}.how-card h2,.info-card h2{margin:5px 0 15px;font-size:20px}.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}.steps article{display:flex;gap:10px;padding:13px;border:1px solid #e4ebf4;border-radius:12px;background:#fbfdff}.steps article>span{flex:0 0 auto;width:25px;height:25px;display:grid;place-items:center;border-radius:8px;color:#fff;background:var(--blue);font-size:11px;font-weight:850}.steps strong{font-size:12px}.steps p,.info-card p{margin:4px 0 0;color:var(--muted);font-size:10px;line-height:1.5}.info-card p{max-width:780px;font-size:11px}.bottom-ad{min-height:110px}.toast{position:fixed;left:50%;bottom:22px;transform:translate(-50%,14px);z-index:50;padding:10px 14px;border-radius:10px;color:#fff;background:#17263b;box-shadow:0 12px 28px rgba(16,32,59,.24);font-size:11px;opacity:0;pointer-events:none;transition:.2s ease}.toast.show{opacity:1;transform:translate(-50%,0)}@media(max-width:820px){.settings-bar{grid-template-columns:1fr 38px 1fr}#qualityField{grid-column:1/-1}.steps{grid-template-columns:1fr 1fr}}@media(max-width:600px){.page-shell,.brand{width:min(100% - 14px,1040px)}.site-header{padding-inline:8px}.settings-bar{grid-template-columns:1fr;gap:9px}.swap-icon{display:none}.options-row{flex-direction:column;align-items:stretch}.compact-field,.page-range-field{width:100%}.toolbar{padding-top:16px;flex-wrap:wrap}.drop-zone,.progress-wrap,.result-section{margin-left:12px;margin-right:12px}.drop-zone{min-height:270px}.drop-placeholder{min-height:268px}.pdf-preview-shell{height:300px}.steps{grid-template-columns:1fr}.result-actions .btn{flex:1 1 180px}}
