.hero-section{background:var(--background-primary);padding:32px var(--container-padding-sm);padding-bottom:20px!important}.form-card h1{font-size:clamp(1rem,2.5vw,1.25rem);font-weight:700;color:var(--color-text-primary);line-height:1.25;margin:0 0 20px;text-align:center;font-family:var(--font-family);letter-spacing:0}.form-card{background:var(--color-form-card-bg);border-radius:var(--radius-card);max-width:100%;margin:0 auto;padding:var(--padding-card);padding-bottom:16px;box-shadow:var(--shadow-card);min-height:220px}.form-card label{display:block;color:var(--color-text-primary);font-size:var(--font-size-sm);font-weight:700;margin-bottom:12px;line-height:var(--line-height-tight);text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.input-wrapper{position:relative;margin-bottom:12px}.video-input{width:100%;height:50px;background:var(--color-bg-card);border:1px solid var(--color-border);border-radius:var(--radius-pill);padding:0 40px 0 16px;font-family:var(--font-family);font-size:16px;color:var(--color-text-primary);box-sizing:border-box;outline:none;transition:border-color var(--transition-normal)}.video-input::placeholder{color:var(--color-text-muted)}.video-input:focus{border:2px solid var(--video-input-active-border)}#input-action-button{position:absolute;right:8px;top:50%;transform:translateY(-50%);background:transparent;color:var(--color-control-icon);border:none;padding:0;border-radius:var(--radius-pill);font-size:12px;font-weight:700;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:0;z-index:2;transition:background var(--transition-fast);white-space:nowrap}#input-action-button:hover{background:transparent}.btn-state{display:inline-flex;align-items:center;gap:4px}.btn-icon{width:20px;height:20px;fill:currentColor}.btn-text{font-size:inherit;font-weight:inherit}.btn-state--paste{display:inline-flex}.btn-state--clear,#input-action-button[data-action=clear] 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button:hover:not(.selected){color:var(--color-text-primary)}#progress{width:100%;height:44px;background:var(--color-bg-card);border:1px solid var(--color-border);border-radius:var(--radius-pill);display:flex;align-items:center;justify-content:center;gap:8px;box-sizing:border-box;cursor:default}#progress span{color:var(--color-progress-text);font-family:var(--font-family);font-size:14px;line-height:1}#icon{width:14px;height:14px;border:2px solid transparent;border-top-color:var(--color-progress-spinner);border-bottom-color:var(--color-progress-spinner);border-radius:50%;-webkit-animation:spin 2s linear infinite;animation:spin 2s linear infinite}@media(prefers-reduced-motion:reduce){#progress #icon,#icon{animation-duration:2s!important;animation-iteration-count:infinite!important}}@-webkit-keyframes spin{0%{-webkit-transform:rotate(0deg)}to{-webkit-transform:rotate(360deg)}}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.support-platforms-bar{display:flex;align-items:center;justify-content:center;gap:12px;background:var(--color-platforms-bar-bg)}.support-platforms-icons{display:flex;align-items:center;gap:8px}.support-platforms-label{font-size:12px;font-weight:700;color:var(--color-support-label);white-space:nowrap}.support-platform-icon{width:18px;height:18px;display:block;flex-shrink:0}.support-platform-icon-youtube .support-platform-youtube-body{fill:#f03}.support-platform-icon-youtube .support-platform-youtube-play{fill:#fff}.support-platform-icon-tiktok{color:#111}html[data-theme=dark] .support-platform-icon-youtube .support-platform-youtube-body{fill:#fff}html[data-theme=dark] .support-platform-icon-youtube .support-platform-youtube-play{fill:#111}html[data-theme=dark] .support-platform-icon-tiktok{color:#fff}.error-message{display:none;color:var(--color-text-secondary);font-size:var(--font-size-sm);margin-top:12px;padding:12px;background:var(--color-bg-card-danger-soft);border-radius:var(--radius-small)}.error-message:not(:empty){display:block}.content-area{margin:var(--container-padding-sm);display:none}.content-area:not(:empty){display:flex;justify-content:center}@media(min-width:351px){.hero-section{padding:32px var(--container-padding-sm)}.form-card h1{font-size:clamp(1.0625rem,3vw,1.375rem);margin:0 0 22px}.form-card{max-width:600px;min-height:200px}.form-card label,.input-wrapper{margin-bottom:16px}.video-input{height:48px;font-size:var(--font-size-base);padding:0 50px 0 20px}#input-action-button{padding:8px 12px;font-size:var(--font-size-sm)}#input-action-button i{font-size:13px}.form-actions{flex-direction:row;justify-content:space-between;gap:16px}.format-toggle button{height:30px;padding:0 16px}#progress{height:48px}#progress span{font-size:var(--font-size-base)}.error-message{margin-top:16px}.content-area:not(:empty){margin-top:16px}}@media(min-width:600px){.form-card{max-width:700px}}@media(min-width:840px){.hero-section{padding:40px var(--container-padding-sm);padding-bottom:24px!important}.form-card h1{font-size:clamp(1.25rem,3.5vw,1.75rem);margin:0 0 24px}.form-card{max-width:800px;min-height:160px}.form-card label,.input-wrapper{margin-bottom:20px}.video-input{height:52px;padding:0 50px 0 24px}#input-action-button{padding:10px 14px}.format-toggle button{height:30px;padding:0 16px}#progress{height:52px}}@media(min-width:1240px){.form-card{max-width:900px;min-height:160px}}@media(min-width:1920px){.form-card h1{font-size:clamp(1.375rem,4vw,2rem);margin:0 0 28px}.form-card{max-width:1000px;min-height:160px}.video-input{height:56px;font-size:18px}.format-toggle button{height:30px;font-size:16px}#progress{height:56px}#progress span{font-size:18px}}@media(min-width:2560px){.form-card h1{font-size:clamp(1.5rem,4.5vw,2.25rem);margin:0 0 32px;line-height:1.2}.form-card{max-width:var(--container-max-width-3xl);min-height:160px}.form-card label{font-size:18px}.video-input{height:64px;font-size:20px}#input-action-button{padding:12px 18px;font-size:16px}.format-toggle button{height:30px;font-size:18px;padding:0 24px}#progress{height:64px}#progress span{font-size:20px}}@media(prefers-reduced-motion:reduce){*{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}@keyframes pulse-glow{0%{box-shadow:0 0 0 0 var(--color-accent-ring-70)}70%{box-shadow:0 0 0 5px var(--color-accent-ring-0)}to{box-shadow:0 0 0 0 var(--color-accent-ring-0)}}.input-pulse{animation:pulse-glow .5s ease-out}.audio-language-warning{display:flex;align-items:center;justify-content:center;gap:8px;padding:4px 16px;margin:15px auto;max-width:500px;background:var(--color-bg-card-warning);border:1px solid var(--color-warning);border-radius:var(--radius-small, 8px);color:var(--color-warning-accent);font-size:13px;font-weight:500;line-height:1.5;text-align:center}.audio-language-warning strong{font-weight:700;color:var(--color-warning-text)}.upload-widget-divider{border:none;border-top:1px dashed var(--color-border, #e5e7eb);margin:16px 0 0}.upload-widget-wrap{display:flex;align-items:center;justify-content:center;gap:14px;margin-top:15px;flex-wrap:wrap}@media(max-width:480px){.upload-widget-wrap{flex-direction:column;gap:8px}}.upload-widget{display:inline-flex;align-items:center;gap:12px;padding:10px 18px;border:1px solid var(--color-primary-alt);border-radius:8px;background-color:var(--color-bg-card);cursor:pointer;transition:all .2s ease;text-decoration:none}.upload-widget:hover{background-color:var(--color-bg-card-hover, var(--color-bg-card));border-color:var(--color-primary-alt)}.upload-widget:active{transform:scale(.98)}@media(min-width:0px)and (max-width:350px){.section-header h2{font-size:var(--md-sys-typescale-headline-small-size);line-height:var(--md-sys-typescale-headline-small-line-height)}.section-header p{font-size:var(--md-sys-typescale-body-medium-size)}.section-header{margin-bottom:var(--md-sys-spacing-6)}}@media(min-width:351px)and (max-width:599px){.section-header h2{font-size:var(--md-sys-typescale-headline-medium-size);line-height:var(--md-sys-typescale-headline-medium-line-height)}.section-header p{font-size:var(--md-sys-typescale-body-large-size);line-height:var(--md-sys-typescale-body-large-line-height)}.section-header{margin-bottom:var(--md-sys-spacing-8)}}@media(min-width:600px)and (max-width:839px){.section-header{margin-bottom:var(--md-sys-spacing-10)}.section-header h2{font-size:var(--md-sys-typescale-headline-large-size);line-height:var(--md-sys-typescale-headline-large-line-height);font-weight:var(--md-sys-typescale-headline-large-weight)}.section-header p{font-size:var(--md-sys-typescale-body-large-size);line-height:var(--md-sys-typescale-body-large-line-height)}}@media(min-width:840px)and (max-width:1239px){.section-header{margin-bottom:var(--md-sys-spacing-12)}.section-header h2{font-size:var(--md-sys-typescale-display-small-size);line-height:var(--md-sys-typescale-display-small-line-height);font-weight:var(--md-sys-typescale-display-small-weight)}.section-header p{font-size:var(--md-sys-typescale-body-large-size);line-height:var(--md-sys-typescale-body-large-line-height)}}@media(min-width:1240px){.section-header{margin-bottom:var(--md-sys-spacing-14)}.section-header h2{font-size:var(--md-sys-typescale-display-small-size);line-height:var(--md-sys-typescale-display-small-line-height);font-weight:var(--md-sys-typescale-display-small-weight)}.section-header p{font-size:var(--md-sys-typescale-body-large-size);line-height:var(--md-sys-typescale-body-large-line-height)}}.section-header{text-align:center;margin-bottom:var(--md-sys-spacing-10);margin-inline:auto}.section-header h2{font-size:var(--md-sys-typescale-headline-large-size);line-height:var(--md-sys-typescale-headline-large-line-height);font-weight:var(--md-sys-typescale-headline-large-weight);color:var(--md-sys-color-on-surface);margin-bottom:var(--md-sys-spacing-3)}.section-header p{font-size:var(--md-sys-typescale-body-large-size);line-height:var(--md-sys-typescale-body-large-line-height);margin:0}.card-hover{transition:all var(--md-sys-motion-duration-short4) 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var(--color-border-brand));box-shadow:none}.result-thumbnail{position:relative;width:100%;padding-bottom:56.25%;overflow:hidden;background:var(--color-muted, var(--color-bg-card-subtle))}.result-thumbnail img{background:var(--color-muted, var(--color-bg-card-subtle));position:absolute;top:0;left:0;width:100%;height:100%;border-radius:0!important;object-fit:cover;display:block}.result-content{margin:10px}.result-title{margin:0 5px;font-size:.875rem;font-weight:500;line-height:1.4;color:var(--color-text, var(--color-text-primary));display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}@media(min-width:351px){.result-title{font-size:.9375rem;-webkit-line-clamp:2;font-weight:400;font-size:12px}}@media(min-width:840px){.result-title{font-size:1rem}}@media(min-width:1240px){.result-title{font-size:1.0625rem}}@media(min-width:1920px){.result-title{font-size:1.125rem}}@media(min-width:2560px){.result-title{font-size:1.125rem}}.content-empty{text-align:center;padding:var(--md-sys-spacing-6) var(--md-sys-spacing-3);color:var(--color-text-muted, var(--color-text-subtle))}.empty-text{margin:0;font-size:.8125rem;line-height:1.5}.placeholder-subtitle{color:var(--color-text-muted, var(--color-text-subtle));font-size:.6875rem;line-height:1.4}@media(min-width:840px){.placeholder-subtitle{font-size:.8125rem}}@media(min-width:2560px){.placeholder-subtitle{font-size:.9375rem}}.hero-section .content-data h2{margin:0 0 var(--md-sys-spacing-2) 0;font-size:var(--md-sys-typescale-headline-small-size);line-height:var(--md-sys-typescale-headline-small-line-height);font-weight:700}@media(min-width:840px){.hero-section .content-data h2{font-size:var(--md-sys-typescale-headline-medium-size);line-height:var(--md-sys-typescale-headline-medium-line-height)}}.hero-section .content-data p{opacity:.95}.convert-page-title{font-size:clamp(1.75rem,4vw,3rem);font-weight:700;text-align:center;margin:0 0 20px;color:#fff;letter-spacing:-.02em;line-height:1.2}html[data-theme=dark] .convert-page-title{color:var(--color-text)}.form-card--convert{min-height:auto;padding-bottom:var(--padding-card)}.upload-zone-wrapper{position:relative}.upload-zone-wrapper:has(.upload-zone.hidden){display:none}.upload-zone{border:2px dashed var(--color-border);border-radius:var(--radius-card);padding:56px 24px 30px;text-align:center;cursor:pointer;background:transparent}.upload-zone:hover,.upload-zone:focus-visible{border-color:var(--color-primary);background:var(--color-accent-soft-05)}.upload-zone:focus-visible{outline:3px solid var(--color-accent-soft-12);outline-offset:2px}.upload-zone.drag-over{border-color:var(--color-primary);background:var(--color-accent-soft-08)}.upload-zone__icon{width:64px;height:64px;margin:0 auto 16px;border-radius:50%;background:var(--color-accent-soft-08);color:var(--color-primary);padding:16px;align-items:center;justify-content:center}.upload-zone__icon svg{width:100%;height:100%}.upload-zone h3{margin:0 0 8px;font-size:1.125rem;font-weight:600;line-height:1.4;color:var(--color-text-secondary)}.upload-zone__hint{margin:0;font-size:.875rem;color:var(--color-text-muted)}.upload-zone__paste-link{margin-top:8px;display:inline-flex;align-items:center;gap:6px;font-size:16px;font-weight:600;cursor:pointer;border:1px solid transparent;background:transparent;color:var(--color-primary-dark);padding:7px 14px;border-radius:var(--radius-pill);transition:background .2s,color .2s,border-color .2s;position:relative;z-index:2}.upload-zone__paste-link svg{width:16px;height:16px}.upload-zone__paste-link:hover{background:var(--color-accent);color:#fff;border-color:var(--color-accent)}.upload-zone__paste-link:focus-visible{outline:3px solid var(--color-accent-soft-12);outline-offset:2px}.upload-zone__error{margin:.5rem 0 0;font-size:.8125rem;color:#e53e3e;font-weight:500;text-align:center;animation:fadeInOut 8s ease forwards;pointer-events:none}@keyframes fadeInOut{0%{opacity:0}5%{opacity:1}85%{opacity:1}to{opacity:0}}.file-panel{background:var(--color-form-card-bg);border-radius:var(--radius-card)}.file-panel__header{display:flex;align-items:center;justify-content:space-between;padding-bottom:7px;border-bottom:1px solid var(--color-border)}.anchor-row{display:flex;gap:18px;align-items:center;flex:1}.anchor-row>.anchor-link+.anchor-link{position:relative}.anchor-row>.anchor-link+.anchor-link:before{content:"";position:absolute;left:-10px;top:50%;transform:translateY(-50%);width:1px;height:16px;background:var(--color-border)}.anchor-link{background:transparent;border:0;padding:6px 0;cursor:pointer;font-size:16px;font-weight:600;color:var(--color-text-muted);display:inline-flex;align-items:center;gap:6px;transition:color .18s ease}.anchor-link svg{width:16px;height:16px;flex-shrink:0}.anchor-link:hover{color:var(--color-accent)}.anchor-link:focus-visible{outline:3px solid var(--color-accent-soft-12);outline-offset:2px;border-radius:2px}.btn--text-action{background:transparent;padding:6px 0;font-size:16px!important;font-weight:600;color:var(--color-primary)}.btn--text-action:hover{color:#3b6ff5}.btn--text-danger{color:var(--color-text-muted)}.btn--text-danger:hover{color:var(--color-error);opacity:1}.file-panel__footer{display:flex;align-items:center;justify-content:space-between;padding-top:16px;border-top:1px solid var(--color-border)}.file-panel__count{font-size:.875rem;font-weight:500;color:var(--color-text-muted)}.btn{border:0;border-radius:var(--radius-card);display:inline-flex;align-items:center;justify-content:center;gap:8px;font:inherit;cursor:pointer}.btn--download-all{padding:10px 20px;border:none;background:#22c55e;color:#fff;font-weight:600;font-size:16px!important;border-radius:10px}.btn--download-all:hover:not(:disabled){background:#16a34a}.btn--download-all:disabled{opacity:.45;cursor:not-allowed}.btn--add-more{padding:10px 18px;background:var(--color-primary);color:#fff;font-size:.875rem;font-weight:600;border-radius:10px}.btn--add-more:hover{background:var(--color-accent)}.btn--download{background:transparent;color:var(--color-primary-dark);width:32px;height:32px;padding:0;font-weight:600;font-size:.875rem;border-radius:6px;transition:all .2s ease}.btn--download:hover{background:var(--color-primary-dark);color:#fff}.btn--download .btn__label{display:none}.btn__icon{display:inline-flex;align-items:center;justify-content:center;width:16px;height:16px}.btn__icon svg{width:100%;height:100%}.btn__icon .btn-icon-zip{width:120%;height:120%}.btn__img{display:inline-block;vertical-align:middle;flex-shrink:0}.file-list{display:flex;flex-direction:column}.file-item{display:flex;gap:16px;align-items:center;padding:16px 0;border-bottom:1px solid var(--color-border)}.file-item:last-child{border-bottom:0}.file-item__content{display:flex;flex-direction:column;gap:8px;flex:1;min-width:0;min-height:50px}.file-item__data-section{display:flex;gap:16px;align-items:center}.file-item__content-col{display:flex;flex-direction:column;gap:0;flex:1;min-width:0}.file-item__type-icon{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;color:var(--color-text-muted);flex-shrink:0}.file-item__type-icon svg{width:100%;height:100%}.file-item__type-icon.is-thumb{position:relative;overflow:hidden;border-radius:4px;background:var(--color-border-soft, #2a2f3a)}.file-item__type-icon.is-thumb img{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:auto;height:100%;max-width:none;max-height:100%;display:block}.file-item__type-icon .thumbnail-placeholder{width:100%;height:100%;border-radius:4px;background:linear-gradient(90deg,var(--color-skeleton-shimmer) 25%,var(--color-border-strong) 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.separator{font-size:.625rem}.progress-percent{font-weight:600;color:var(--color-primary);white-space:nowrap}.file-item__actions{display:flex;align-items:center;gap:12px;flex-shrink:0}.convert-progress{width:100%;height:3px;background:var(--color-bg-card-strong);border-radius:2px;overflow:hidden;margin-top:3px}.convert-progress__bar{width:0;height:3px;background:var(--color-border-brand);border-radius:2px}.convert-progress__bar--animate{transition:width .3s cubic-bezier(.4,0,.2,1)}.file-item[data-status=uploading] .convert-progress__bar{background:#d97757}.file-item[data-status=uploading] .progress-percent,.file-item[data-status=uploading] .status--processing{color:#d97757}.file-item[data-status=converting] .convert-progress__bar{background:var(--color-border-brand)}.file-item[data-status=converting] .progress-percent,.file-item[data-status=converting] .status--processing{color:var(--color-primary)}.file-item[data-status=extracting] .convert-progress,.file-item[data-status=preparing] .convert-progress{position:relative;overflow:hidden;border-radius:99px;background:var(--color-bg-card-slate-soft)}.file-item[data-status=extracting] .convert-progress__bar,.file-item[data-status=preparing] .convert-progress__bar{opacity:0;width:18%!important;transition:none}.file-item[data-status=extracting] .convert-progress:before,.file-item[data-status=preparing] .convert-progress:before{content:"";position:absolute;inset:0;background:var(--md-extracting-neon-base);box-shadow:0 0 6px var(--md-extracting-neon-glow-soft),0 0 14px var(--md-extracting-neon-glow-strong);opacity:0;animation:convert-neon-pulse 1s ease-in-out infinite alternate}.file-item[data-status=extracting] .convert-progress:after,.file-item[data-status=preparing] .convert-progress:after{content:"";position:absolute;top:0;left:-40%;width:40%;height:100%;background:linear-gradient(90deg,transparent,var(--md-extracting-neon-base),transparent);box-shadow:0 0 8px var(--md-extracting-neon-after-glow);opacity:var(--md-extracting-neon-after-opacity);animation:convert-neon-slide 1.2s ease-in-out infinite}@keyframes convert-neon-pulse{0%{opacity:var(--md-extracting-neon-pulse-min)}to{opacity:var(--md-extracting-neon-pulse-max)}}@keyframes convert-neon-slide{0%{transform:translate(-100%)}to{transform:translate(350%)}}.file-item[data-status=preparing] .progress-percent,.file-item[data-status=preparing] .status--processing{color:var(--color-primary)}.status{display:inline-flex;align-items:center;gap:6px;font-size:.8125rem}.status--ready{color:var(--color-primary);font-weight:600}.status--processing{color:var(--color-primary);font-weight:500;font-size:.8125rem}.status--success{color:var(--color-success);font-weight:600}.status--error{color:var(--color-error);font-weight:600}.status-icon{display:inline-flex;align-items:center;justify-content:center;width:12px;height:12px}.status-icon svg{width:100%;height:100%}.processing{display:inline-flex;align-items:center;gap:6px;color:var(--color-text-muted);font-size:.875rem}.processing-icon{display:inline-flex;align-items:center;justify-content:center;width:14px;height:14px;animation:fc-spin .8s linear infinite}.processing-icon svg{width:100%;height:100%}@keyframes fc-spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.remove-btn{display:none}.remove-btn:hover{color:var(--color-error);background:var(--color-error-soft-05)}.remove-btn__icon{display:inline-flex;align-items:center;justify-content:center;width:16px;height:16px}.remove-btn__icon svg{width:100%;height:100%}.drag-overlay{position:fixed;inset:0;z-index:10000;display:flex;align-items:center;justify-content:center;background:#60a5fa;animation:fc-overlayIn .2s ease-out forwards}.drag-overlay__content{text-align:center;pointer-events:none}.drag-overlay__icon{margin:0 auto 24px;display:flex;align-items:center;justify-content:center}.drag-overlay__icon img{width:80px;height:80px}.drag-overlay__content h2{margin:0;color:#fff;font-size:clamp(1.75rem,5vw,2.25rem);font-weight:700}@keyframes fc-overlayIn{0%{opacity:0}to{opacity:1}}.hidden{display:none!important}@media(max-width:768px){.upload-zone{padding:40px 18px}.file-item{gap:12px;padding:10px 0}.file-item__content{min-height:56px}.file-item__data-section{gap:12px}.file-item__type-icon{width:28px;height:28px}.file-panel__footer{justify-content:center}.file-panel__count{display:none}.btn--download-all{width:100%;text-align:center;background:#22c55e;color:#fff;padding:12px 0;border-radius:10px}}@media(max-width:520px){.upload-zone h3{font-size:1rem}.file-item{gap:10px;padding:8px 0}.file-item__content{min-height:52px}.file-item__data-section{gap:10px}.file-item__type-icon{width:24px;height:24px}}