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(max-width:720px){.sidebar{display:none}}.thumb-badge{position:absolute;right:6px;bottom:6px;display:flex;align-items:center;gap:4px;padding:2px 6px;border-radius:4px;background:rgba(0,0,0,.75);color:#fff;font-size:11px;font-weight:500;pointer-events:none}.preview-box{background:var(--bg-elev);border:1px solid var(--border);border-radius:12px;max-width:min(92vw,1100px);box-shadow:0 16px 48px rgba(0,0,0,.6);overflow:hidden}.preview-head{display:flex;justify-content:space-between;align-items:center;padding:12px 14px;border-bottom:1px solid var(--border-soft);font-weight:600;font-size:14px}.preview-body{display:grid;place-items:center;background:#000;min-height:200px}.preview-body img,.preview-body video{display:block}.preview-foot{padding:10px 14px;border-top:1px solid var(--border-soft);font-size:12px;color:var(--text-dim)}.srt-box{background:var(--bg-elev);border:1px solid var(--border);border-radius:12px;width:min(96vw,1200px);max-height:92vh;display:flex;flex-direction:column;overflow:hidden}.srt-split{display:grid;grid-template-columns:minmax(280px,42%) 1fr;grid-gap:14px;gap:14px;padding:14px;overflow:hidden;min-height:0}.srt-video{align-self:start;position:-webkit-sticky;position:sticky;top:0}.srt-list{overflow-y:auto;max-height:72vh;padding-right:4px}.srt-cue{border:1px solid var(--border-soft);border-radius:var(--radius-sm);padding:8px;margin-bottom:8px;background:var(--bg)}.srt-times{display:flex;align-items:center;gap:6px;margin-bottom:6px;flex-wrap:wrap}.srt-num{font-size:11px;color:var(--text-faint);min-width:18px}.srt-times input{border:1px solid var(--border);border-radius:4px;padding:4px 6px;font-size:12px}.srt-cue textarea,.srt-times input{background:var(--bg-elev);color:var(--text)}.srt-cue textarea{width:100%;border:1px solid var(--border);border-radius:var(--radius-sm);padding:6px 8px;font-size:13px;font-family:inherit;resize:vertical}.srt-cue textarea:focus,.srt-times input:focus{outline:none;border-color:var(--accent)}@media (max-width:860px){.srt-split{grid-template-columns:1fr}}