:root{color:#17211b;font-synthesis:none;text-rendering:optimizelegibility;--primary:#17663e;--primary-hover:#105331;--surface:#fff;--surface-muted:#f0f4ed;--text:#17211b;--text-muted:#657168;--border:#dce4da;--focus:#17663e;--success:#167447;--danger:#b42318;background:#f6f8f3;font-family:Inter,PingFang SC,Microsoft YaHei,system-ui,sans-serif}*{box-sizing:border-box}html{scroll-behavior:smooth}body{background:radial-gradient(circle at 50% -10%,#c9e0c5b3,#0000 33rem),#f6f8f3;min-width:320px;min-height:100vh;margin:0}button,input{font:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed}button:focus-visible,input:focus-visible,a:focus-visible{outline-offset:3px;outline:3px solid #17663e47}main{width:min(100% - 32px,960px);margin:0 auto}.site-header{justify-content:space-between;align-items:center;height:72px;display:flex}.brand{color:var(--text);align-items:center;gap:10px;font-size:17px;font-weight:750;text-decoration:none;display:inline-flex}.brand-mark{color:#fff;background:var(--primary);border-radius:11px;place-items:center;width:36px;height:36px;display:grid}.privacy-badge{color:var(--primary);background:#ffffffb8;border:1px solid #17663e24;border-radius:999px;align-items:center;gap:7px;padding:8px 12px;font-size:13px;font-weight:650;display:inline-flex}.hero{text-align:center;padding:72px 16px 44px}.eyebrow{color:var(--primary);letter-spacing:.12em;margin:0 0 16px;font-size:13px;font-weight:800}.hero h1{letter-spacing:-.045em;max-width:720px;margin:0 auto;font-size:clamp(38px,6vw,62px);line-height:1.08}.hero-copy{max-width:580px;color:var(--text-muted);margin:22px auto 0;font-size:17px;line-height:1.7}.converter-card{background:var(--surface);border:1px solid #17211b14;border-radius:24px;padding:12px;box-shadow:0 22px 70px #2236271a}.drop-zone{text-align:center;background:#fbfcfa;border:1.5px dashed #a9b9aa;border-radius:17px;flex-direction:column;justify-content:center;align-items:center;min-height:330px;padding:40px 20px;transition:border-color .18s,background .18s;display:flex}.drop-zone.is-dragging{border-color:var(--primary);background:#edf6ed}.upload-icon{width:64px;height:64px;color:var(--primary);background:#e6f0e5;border-radius:18px;place-items:center;margin-bottom:20px;display:grid}.drop-zone h2{letter-spacing:-.02em;margin:0;font-size:23px}.drop-zone p{color:var(--text-muted);margin:10px 0 24px;line-height:1.6}.drop-zone .upload-notice{color:var(--danger);margin:14px 0 0;font-size:13px}.secondary-button,.primary-button,.download-button{border:0;border-radius:12px;min-height:48px;padding:0 22px;font-weight:720;transition:background .18s,color .18s,opacity .18s}.secondary-button{color:#fff;background:var(--primary)}.secondary-button:hover{background:var(--primary-hover)}.queue{padding:28px 20px 16px}.queue-header{justify-content:space-between;align-items:center;gap:16px;display:flex}.queue-header h2{margin:0 0 5px;font-size:18px}.queue-header p{color:var(--text-muted);margin:0;font-size:13px}.text-button,.icon-button{min-width:44px;min-height:44px;color:var(--text-muted);background:0 0;border:0;border-radius:10px;justify-content:center;align-items:center;display:inline-flex}.text-button{gap:7px;padding:0 10px}.text-button:hover,.icon-button:hover{color:var(--text);background:var(--surface-muted)}.text-button:disabled,.icon-button:disabled{opacity:.45}.file-list{border-top:1px solid var(--border);margin:20px 0;padding:0;list-style:none}.file-row{border-bottom:1px solid var(--border);align-items:center;gap:12px;min-height:68px;display:flex}.file-status{width:36px;height:36px;color:var(--text-muted);background:var(--surface-muted);border-radius:10px;flex:0 0 36px;place-items:center;display:grid}.status-done{color:var(--success);background:#e7f4eb}.status-error{color:var(--danger);background:#fcebea}.file-details{flex-direction:column;flex:1;gap:4px;min-width:0;display:flex}.file-details strong{text-overflow:ellipsis;white-space:nowrap;font-size:14px;overflow:hidden}.file-details span{color:var(--text-muted);font-size:12px}.file-details .error-text{color:var(--danger);white-space:normal}.settings-row{justify-content:space-between;align-items:center;gap:24px;padding:4px 0 24px;display:flex}.settings-row label{font-size:14px;font-weight:700}.quality-control{align-items:center;gap:12px;width:min(320px,60%);display:flex}.quality-control input{accent-color:var(--primary);flex:1}.quality-control output{width:42px;color:var(--text-muted);font-variant-numeric:tabular-nums;font-size:13px}.actions{grid-template-columns:1fr 1fr;gap:12px;display:grid}.primary-button,.download-button{justify-content:center;align-items:center;gap:9px;display:inline-flex}.primary-button{color:#fff;background:var(--primary)}.primary-button:hover:not(:disabled){background:var(--primary-hover)}.primary-button:disabled{opacity:.42}.download-button{color:var(--primary);background:#e7f1e6}.download-button:hover{background:#dcebdc}.trust-grid{grid-template-columns:repeat(3,1fr);gap:16px;padding:64px 0;display:grid}.trust-grid article{padding:8px}.trust-grid svg{color:var(--primary)}.trust-grid h2{margin:14px 0 8px;font-size:15px}.trust-grid p{color:var(--text-muted);margin:0;font-size:13px;line-height:1.65}footer{color:var(--text-muted);text-align:center;padding:16px 0 40px;font-size:13px}.support-widget{right:max(20px, env(safe-area-inset-right));bottom:max(20px, 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18px;padding-right:44px;font-size:17px}.support-panels{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;display:grid}.support-panel{min-width:0}.support-heading{align-items:center;gap:10px;margin-bottom:12px;display:flex}.support-icon{width:44px;height:44px;color:var(--primary);background:#e7f1e6;border-radius:13px;flex:0 0 44px;place-items:center;display:grid}.support-icon.feedback-icon{color:#245aa5;background:#e9f0fa}.support-heading h3{margin:0 0 3px;font-size:15px}.support-heading p{color:var(--text-muted);margin:0;font-size:13px}.qr-frame{aspect-ratio:1;border:1px solid var(--border);background:#f7f9f5;border-radius:14px;width:100%;position:relative;overflow:hidden}.qr-frame img{object-fit:contain;width:100%;height:100%;display:block}.qr-frame img.is-pending{display:none}.qr-placeholder{color:#879289;flex-direction:column;justify-content:center;align-items:center;gap:10px;font-size:13px;display:flex;position:absolute;inset:0}.support-amounts{grid-template-columns:repeat(3,1fr);gap:7px;margin-top:12px;display:grid}.support-amounts span{min-height:36px;color:var(--primary);font-variant-numeric:tabular-nums;background:#f1f6ef;border:1px solid #d7e3d7;border-radius:9px;place-items:center;font-size:13px;font-weight:750;display:grid}.support-note{color:var(--text-muted);text-align:center;margin:12px 0 0;font-size:12px}.spin{animation:.9s linear infinite spin}.sr-only{clip:rect(0, 0, 0, 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}@keyframes spin{to{transform:rotate(360deg)}}@keyframes support-in{0%{opacity:0;transform:translateY(8px)scale(.98)}to{opacity:1;transform:translateY(0)scale(1)}}@media (width<=680px){main{width:min(100% - 20px,960px)}.site-header{height:64px}.privacy-badge{padding:7px 9px}.hero{padding:54px 8px 34px}.hero h1{font-size:clamp(36px,12vw,48px)}.hero-copy{font-size:15px}.converter-card{border-radius:19px;padding:8px}.drop-zone{min-height:292px}.queue{padding:24px 10px 10px}.settings-row{flex-direction:column;align-items:flex-start;gap:12px}.quality-control{width:100%}.actions{grid-template-columns:1fr}.trust-grid{grid-template-columns:1fr;gap:24px;padding:44px 8px}.support-widget{right:max(12px, env(safe-area-inset-right));bottom:max(12px, env(safe-area-inset-bottom))}.support-card{width:min(520px,100vw - 24px);padding:16px}.support-panels{gap:12px}.support-heading{flex-direction:column;align-items:flex-start}.support-heading p{font-size:12px}.support-note{min-height:36px;line-height:1.5}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}