.srt-layout{display:block;overflow-y:auto}.srt-container{max-width:1000px;margin:20px auto;padding:0 20px;container-type:inline-size;container-name:srt-container}.srt-title{text-align:center;margin-bottom:20px;font-size:1.6rem;color:#1d1d1f}.hidden-input,.hidden-source{display:none}.audio-mob-container{min-height:40px;box-sizing:border-box;display:none;margin:10px 0;background:#f1f5f9;padding:8px;border-radius:10px}.audio-mob-container[data-visible=""]{display:block}.audio-mob-player{width:100%;height:40px}.drop-zone{padding:30px;border:2px dashed #d2d2d7;border-radius:12px;text-align:center;background:#fafafa;transition:.3s}.drop-zone-icon{font-size:2.5rem;display:block;margin-bottom:10px}.drop-zone-title{margin:5px 0;font-weight:600}.drop-zone-desc{font-size:.85rem;color:#888}.btn-select-file{width:auto;margin:15px auto;padding:8px 20px}.file-info{margin-top:15px;font-size:.9rem;color:#0071e3;font-weight:500}.audio-player-hidden{width:100%;margin-top:15px;visibility:hidden;height:40px;min-height:40px;box-sizing:border-box}.audio-player-hidden[data-visible=""]{visibility:visible}.srt-dl-area-hidden{visibility:hidden;height:0;overflow:hidden;text-align:right;margin-top:0;box-sizing:border-box}.srt-dl-area-hidden[data-visible=""]{visibility:visible;height:auto;min-height:44px;margin-top:15px}.tips-icon{font-size:1.2rem}.srt-box{background:#fff;padding:clamp(20px,2.5vw,25px);border-radius:clamp(10px,1.2vw,12px);border:1px solid #e0e0e0;box-shadow:0 2px 10px #0000000d;container-type:inline-size;container-name:srt-box}.srt-label{font-weight:700;margin:0 0 8px;display:block;font-size:.95rem;color:#444}#text-section[data-active=""]{display:block}#text-section:not([data-active]){display:none}#audio-section[data-active=""]{display:block}#audio-section:not([data-active]){display:none}#text-audio-section[data-active=""]{display:block}#text-audio-section:not([data-active]){display:none}#srt-btn-paste[data-active=""]{display:flex}#srt-btn-paste:not([data-active]){display:none}#srt-btn-preview[data-active=""]{display:flex}#srt-btn-preview:not([data-active]){display:none}#audio-player[data-visible=""]{visibility:visible;height:40px;min-height:40px}#audio-player:not([data-visible]){visibility:hidden;height:40px;min-height:40px}#srt-dl-area[data-visible=""]{visibility:visible;height:auto;min-height:44px}#srt-dl-area:not([data-visible]){visibility:hidden;height:0;overflow:hidden}#text-section,#audio-section{view-transition-name:srt-content-section}.tab-btn.active,.tab-btn[data-active=""]{background-color:#f0f0f5}@supports not (view-transition-name: none){#text-section,#audio-section{transition:opacity .3s ease,transform .3s ease}}#srt-input,#srt-output{width:100%;padding:15px;border:1px solid #d2d2d7;border-radius:8px;font-family:inherit;resize:vertical;box-sizing:border-box;outline:none;transition:border-color .2s}#srt-input:focus{border-color:#0071e3}#srt-input{height:160px;font-size:1rem}#srt-output{height:200px;background:#f8f9fa;font-family:monospace;white-space:pre;color:#333;margin-top:10px}.srt-btn-group{display:flex;gap:12px;margin:20px 0;flex-wrap:wrap}.btn-srt{border:none;padding:12px 20px;border-radius:8px;cursor:pointer;font-size:.95rem;flex:1;min-width:120px;font-weight:600;display:flex;align-items:center;justify-content:center;gap:6px;transition:background-color .2s,transform .1s;will-change:transform;transform:translateZ(0)}.btn-srt:active{transform:scale(.98) translateZ(0)}.btn-srt-gray{background:#f0f0f5;color:#333}.btn-srt-blue{background:#e3f0ff;color:#0071e3}.btn-srt-green{background:#34c759;color:#fff}.btn-srt-dl{background:#1d1d1f;color:#fff;padding:10px 24px;border-radius:30px;text-decoration:none;font-size:1rem;display:inline-flex;align-items:center;gap:8px;font-weight:600}.tips-box{background:#fff8e1;border:1px solid #ffe0b2;padding:15px;border-radius:8px;margin-top:20px;display:flex;gap:10px;align-items:flex-start}.tutorial-grid{display:grid;grid-template-columns:1fr 1fr;gap:clamp(16px,2vw,20px);margin-top:clamp(30px,4vw,40px)}@container srt-container (max-width: 768px){.tutorial-grid{grid-template-columns:1fr}}.t-card{background:#fff;padding:clamp(16px,2vw,20px);border-radius:clamp(8px,1vw,10px);border:1px solid #eee;contain:layout style paint;will-change:transform;transform:translateZ(0)}.t-card h3{margin-top:0;color:#4a90e2;font-size:1.1rem;border-bottom:1px solid #eee;padding-bottom:8px}.t-list{padding-left:20px;margin-top:10px;line-height:1.8;color:#555}@media (max-width: 768px){.tutorial-grid{grid-template-columns:1fr}}.tab-btn{width:200px;height:35px;background:#fff;border-radius:10px;margin-bottom:10px;margin-right:12px;border:1px solid #f1f5f9;font-weight:300;font-size:16px;box-shadow:inset 0 0 10px #0000000d}.tab-btn:hover{background-color:#cde0f3}.tab-btn.active{background-color:#f0f0f5}.text-audio-section-hidden{display:none}#srt-text-audio-input{width:100%;padding:15px;border:1px solid #d2d2d7;border-radius:8px;font-family:inherit;resize:vertical;box-sizing:border-box;outline:none;transition:border-color .2s;height:120px;font-size:1rem}#srt-text-audio-input:focus{border-color:#0071e3}#tab-text-audio.active,#tab-text-audio[data-active=""]{background-color:#f0f0f5}.text-audio-header{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:10px;margin-bottom:8px}.text-audio-tools{display:flex;align-items:center;gap:12px}.btn-import-txt{padding:6px 12px!important;font-size:.85rem!important;min-width:auto!important;flex:none!important}.char-count{font-size:.85rem;color:#666;padding:4px 10px;background:#f5f5f5;border-radius:4px;white-space:nowrap}.char-count.warning{color:#e67e22;background:#fef5e7}.char-count.error{color:#e74c3c;background:#fdf2f2}.language-select-wrapper{display:flex;align-items:center;gap:10px;margin:12px 0}.language-select-wrapper .srt-label{margin:0;white-space:nowrap}