:root{--wb-canvas: #ffffff;--wb-surface-raised: #fafafa;--wb-surface-inset: #f4f5f7;--wb-ink: #101113;--wb-charcoal: #4b4f55;--wb-mute: #6b7079;--wb-hairline: #e5e7eb;--wb-primary: #ea2804;--wb-primary-deep: #c01f00;--wb-on-primary: #ffffff;--wb-on-dark: #f9f9f9;--int-bg: #0f1117;--int-surface: #1a1d27;--int-surface-raised: #22263a;--int-border: #2d3148;--int-accent: #4f8ef7;--int-accent-deep: #3a72d8;--int-accent-glow: rgba(79,142,247,.15);--int-ink: #e8eaf0;--int-mute: #7c8298;--int-success: #34c97a;--int-error: #e05c5c;--int-radius: 10px;--int-radius-sm: 6px;--int-radius-lg: 16px}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;scroll-behavior:smooth}@media (prefers-reduced-motion: reduce){html{scroll-behavior:auto}}body{font-family:Inter,-apple-system,system-ui,sans-serif;background:var(--int-bg);color:var(--int-ink);line-height:1.5;min-height:100vh;display:flex;flex-direction:column}a{color:var(--wb-primary);text-decoration:none}a:hover{text-decoration:underline}.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.wb-toolbar{position:sticky;top:0;z-index:100;height:52px;background:var(--wb-canvas);border-bottom:1px solid var(--wb-hairline);box-shadow:0 4px 8px #0000000a;display:flex;align-items:center;padding:0 24px;gap:16px}.wb-toolbar.is-scrolled{background:var(--wb-surface-raised)}.wb-mark{display:flex;align-items:center;gap:8px;color:var(--wb-primary);font-family:Inter,system-ui,sans-serif;font-size:14px;font-weight:700;text-decoration:none;flex-shrink:0;min-height:44px}.wb-mark:hover{text-decoration:none;opacity:.85}.wb-wordmark{color:var(--wb-primary)}.wb-tool-name{font-size:14px;font-weight:600;color:var(--wb-ink);flex:1}.wb-actions{display:flex;gap:8px;align-items:center}.wb-btn-ghost{display:flex;align-items:center;gap:6px;height:36px;padding:0 12px;border:1px solid var(--wb-hairline);border-radius:8px;background:transparent;color:var(--wb-ink);font-family:Inter,system-ui,sans-serif;font-size:13px;font-weight:500;cursor:pointer;min-width:44px;min-height:44px}.wb-btn-ghost:hover{background:var(--wb-surface-inset)}.wb-btn-ghost:focus-visible{outline:2px solid var(--wb-primary);outline-offset:2px}.ad-slot{width:100%;overflow:hidden;margin:24px 0;background:var(--int-bg)}.ad-leaderboard{min-height:50px}.ad-rectangle{min-height:100px}@media (min-width: 728px){.ad-leaderboard{min-height:90px}.ad-rectangle{min-height:250px}}.interior{flex:1;background:var(--int-bg);padding:40px 24px;max-width:860px;width:100%;margin:0 auto;display:flex;flex-direction:column;gap:32px}.tool-header{text-align:center}.tool-heading{font-size:clamp(1.75rem,4vw,2.5rem);font-weight:700;color:var(--int-ink);letter-spacing:-.02em;line-height:1.15}.tool-subhead{margin-top:8px;font-size:1rem;color:var(--int-mute)}.format-bar{background:var(--int-surface);border:1px solid var(--int-border);border-radius:var(--int-radius);padding:6px}.format-tabs{display:flex;gap:4px;flex-wrap:wrap}.format-tab{flex:1;min-width:120px;height:40px;padding:0 16px;border:none;border-radius:calc(var(--int-radius) - 2px);background:transparent;color:var(--int-mute);font-family:Inter,system-ui,sans-serif;font-size:13px;font-weight:500;cursor:pointer;white-space:nowrap;min-height:44px;transition:background .15s ease,color .15s ease}@media (prefers-reduced-motion: reduce){.format-tab{transition:none}}.format-tab:hover{color:var(--int-ink);background:var(--int-surface-raised)}.format-tab.active{background:var(--int-accent);color:#fff}.format-tab:focus-visible{outline:2px solid var(--int-accent);outline-offset:2px}.convert-panel{display:flex;flex-direction:column;gap:20px}.drop-zone{border:2px dashed var(--int-border);border-radius:var(--int-radius-lg);background:var(--int-surface);padding:48px 24px;text-align:center;cursor:pointer;transition:border-color .15s ease,background .15s ease;display:flex;flex-direction:column;align-items:center;gap:10px}@media (prefers-reduced-motion: reduce){.drop-zone{transition:none}}.drop-zone:hover,.drop-zone:focus-visible,.drop-zone.is-over{border-color:var(--int-accent);background:var(--int-accent-glow);outline:none}.drop-icon{color:var(--int-mute)}.drop-zone.is-over .drop-icon{color:var(--int-accent)}.drop-primary{font-size:1.1rem;font-weight:600;color:var(--int-ink)}.drop-secondary{font-size:.9rem;color:var(--int-mute)}.drop-browse{background:none;border:none;color:var(--int-accent);font-size:inherit;font-family:inherit;cursor:pointer;padding:0;text-decoration:underline;min-height:44px}.drop-browse:focus-visible{outline:2px solid var(--int-accent);outline-offset:2px}.drop-accepts{font-size:.8rem;color:var(--int-mute);font-family:ui-monospace,JetBrains Mono,monospace}.options-bar{display:flex;flex-wrap:wrap;gap:12px;align-items:center}.opt-group{display:flex;flex-direction:column;gap:4px}.opt-label{font-size:11px;font-weight:600;color:var(--int-mute);text-transform:uppercase;letter-spacing:.06em}.opt-select{height:36px;padding:0 10px;border:1px solid var(--int-border);border-radius:var(--int-radius-sm);background:var(--int-surface);color:var(--int-ink);font-family:Inter,system-ui,sans-serif;font-size:13px;cursor:pointer;min-height:44px}.opt-select:focus-visible{outline:2px solid var(--int-accent);outline-offset:2px}.opt-range-wrap{display:flex;align-items:center;gap:8px}.opt-range{width:120px;cursor:pointer;accent-color:var(--int-accent)}.opt-range-val{font-size:13px;font-family:ui-monospace,JetBrains Mono,monospace;color:var(--int-ink);min-width:32px}.file-list{display:flex;flex-direction:column;gap:8px}.file-item{display:flex;align-items:center;gap:12px;padding:10px 14px;background:var(--int-surface);border:1px solid var(--int-border);border-radius:var(--int-radius-sm)}.file-item-icon{width:32px;height:32px;border-radius:4px;background:var(--int-surface-raised);display:flex;align-items:center;justify-content:center;font-size:11px;font-family:ui-monospace,JetBrains Mono,monospace;color:var(--int-accent);flex-shrink:0;font-weight:700;text-transform:uppercase}.file-item-name{flex:1;font-size:13px;color:var(--int-ink);font-family:ui-monospace,JetBrains Mono,monospace;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.file-item-size{font-size:12px;color:var(--int-mute);flex-shrink:0}.file-item-remove{background:none;border:none;color:var(--int-mute);cursor:pointer;padding:4px;border-radius:4px;display:flex;align-items:center;min-width:44px;min-height:44px;justify-content:center}.file-item-remove:hover{color:var(--int-error)}.file-item-remove:focus-visible{outline:2px solid var(--int-accent);outline-offset:2px}.action-row{display:flex;gap:12px;align-items:center}.btn-convert{flex:1;height:48px;border:none;border-radius:var(--int-radius);background:var(--int-accent);color:#fff;font-family:Inter,system-ui,sans-serif;font-size:15px;font-weight:600;cursor:pointer;min-height:44px;transition:background .12s ease,transform 80ms ease}@media (prefers-reduced-motion: reduce){.btn-convert{transition:none}}.btn-convert:hover{background:var(--int-accent-deep)}.btn-convert:active{transform:scale(.99)}.btn-convert:disabled{opacity:.45;cursor:not-allowed}.btn-convert:focus-visible{outline:2px solid var(--int-accent);outline-offset:2px}.btn-clear{height:48px;padding:0 20px;border:1px solid var(--int-border);border-radius:var(--int-radius);background:transparent;color:var(--int-mute);font-family:Inter,system-ui,sans-serif;font-size:14px;font-weight:500;cursor:pointer;min-height:44px}.btn-clear:hover{border-color:var(--int-accent);color:var(--int-ink)}.btn-clear:focus-visible{outline:2px solid var(--int-accent);outline-offset:2px}.progress-area{display:flex;flex-direction:column;gap:12px}.progress-track{height:6px;background:var(--int-surface-raised);border-radius:99px;overflow:hidden}.progress-fill{height:100%;background:var(--int-accent);border-radius:99px;width:0%;transition:width .2s ease}@media (prefers-reduced-motion: reduce){.progress-fill{transition:none}}.progress-text{font-size:13px;color:var(--int-mute);text-align:center}.results-area{display:flex;flex-direction:column;gap:16px}.results-heading{font-size:14px;font-weight:600;color:var(--int-mute);text-transform:uppercase;letter-spacing:.06em}.result-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:12px}.result-item{background:var(--int-surface);border:1px solid var(--int-border);border-radius:var(--int-radius);overflow:hidden;display:flex;flex-direction:column}.result-thumb{aspect-ratio:4/3;object-fit:contain;background:var(--int-surface-raised);width:100%}.result-thumb-placeholder{aspect-ratio:4/3;background:var(--int-surface-raised);display:flex;align-items:center;justify-content:center;font-size:28px;color:var(--int-mute)}.result-meta{padding:8px 10px;display:flex;flex-direction:column;gap:6px}.result-name{font-size:11px;font-family:ui-monospace,JetBrains Mono,monospace;color:var(--int-mute);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.result-download{display:flex;align-items:center;justify-content:center;gap:6px;height:34px;border:none;border-radius:var(--int-radius-sm);background:var(--int-accent);color:#fff;font-family:Inter,system-ui,sans-serif;font-size:12px;font-weight:600;cursor:pointer;text-decoration:none;min-height:44px}.result-download:hover{background:var(--int-accent-deep);text-decoration:none}.result-download:focus-visible{outline:2px solid var(--int-accent);outline-offset:2px}.download-all-btn{align-self:flex-start;height:40px;padding:0 20px;border:1px solid var(--int-accent);border-radius:var(--int-radius);background:transparent;color:var(--int-accent);font-family:Inter,system-ui,sans-serif;font-size:13px;font-weight:600;cursor:pointer;min-height:44px}.download-all-btn:hover{background:var(--int-accent-glow)}.download-all-btn:focus-visible{outline:2px solid var(--int-accent);outline-offset:2px}.support-content{border-top:1px solid var(--int-border);padding-top:32px;display:flex;flex-direction:column;gap:20px}.faq-heading{font-size:1rem;font-weight:700;color:var(--int-mute);text-transform:uppercase;letter-spacing:.07em}.faq-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(340px,1fr));gap:12px}.faq-item{background:var(--int-surface);border:1px solid var(--int-border);border-radius:var(--int-radius);padding:0;overflow:hidden}.faq-item summary{padding:14px 16px;cursor:pointer;font-size:14px;font-weight:600;color:var(--int-ink);list-style:none;display:flex;justify-content:space-between;align-items:center;min-height:44px}.faq-item summary::-webkit-details-marker{display:none}.faq-item summary:after{content:"+";font-size:18px;color:var(--int-mute);flex-shrink:0}.faq-item[open] summary:after{content:"−"}.faq-item p{padding:0 16px 14px;font-size:13px;color:var(--int-mute);line-height:1.6}.wb-footer{background:var(--wb-canvas);border-top:1px solid var(--wb-hairline);padding:24px 32px}.wb-footer-links{display:flex;gap:48px;margin-bottom:24px;flex-wrap:wrap}.wb-footer-col{display:flex;flex-direction:column;gap:6px}.wb-footer-label{font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--wb-charcoal);margin-bottom:4px}.wb-footer a{font-size:13px;color:var(--wb-charcoal)}.wb-footer a:hover{color:var(--wb-ink)}.wb-footer-copy{font-size:13px;color:var(--wb-charcoal);border-top:1px solid var(--wb-hairline);padding-top:16px}.wb-modal-backdrop{position:fixed;inset:0;background:#0006;z-index:200;display:flex;align-items:center;justify-content:center;padding:24px}.wb-modal-backdrop[hidden]{display:none}.wb-modal{background:var(--wb-canvas);border-radius:16px;padding:32px;max-width:480px;width:100%;display:flex;flex-direction:column;gap:16px}.wb-modal-title{font-size:18px;font-weight:700;color:var(--wb-ink)}.wb-modal-body{font-size:14px;color:var(--wb-charcoal);padding-left:20px;display:flex;flex-direction:column;gap:8px;line-height:1.6}.wb-modal-note{font-size:13px;color:var(--wb-mute)}.btn-primary{height:44px;padding:0 24px;border:none;border-radius:8px;background:var(--wb-primary);color:var(--wb-on-primary);font-family:Inter,system-ui,sans-serif;font-size:14px;font-weight:600;cursor:pointer;align-self:flex-start;min-height:44px}.btn-primary:hover{background:var(--wb-primary-deep)}.btn-primary:focus-visible{outline:2px solid var(--wb-primary);outline-offset:2px}.wb-toast{position:fixed;bottom:24px;left:50%;transform:translate(-50%);background:#0e0f12;color:var(--wb-on-dark);font-size:14px;font-family:Inter,system-ui,sans-serif;padding:10px 20px;border-radius:6px;z-index:300;opacity:0;transition:opacity .2s ease;pointer-events:none;max-width:calc(100vw - 48px);text-align:center}@media (prefers-reduced-motion: reduce){.wb-toast{transition:none}}.wb-toast.is-visible{opacity:1}@media (max-width: 600px){.interior{padding:24px 16px;gap:24px}.wb-toolbar{padding:0 16px}.format-tab{min-width:90px;font-size:12px;padding:0 10px}.wb-footer{padding:24px 16px}.wb-footer-links{gap:24px}.faq-grid{grid-template-columns:1fr}.result-grid{grid-template-columns:repeat(auto-fill,minmax(130px,1fr))}}