:root{color-scheme:light;--bg:#f4f6f8;--panel:#ffffff;--panel-soft:#f8fafc;--border:#d8dee8;--border-strong:#aeb8c8;--text:#172033;--muted:#64748b;--accent:#0f766e;--accent-strong:#0b5f59;--orange:#c2410c;--red:#b42318;--blue:#1d4ed8;--shadow:0 10px 26px rgba(15,23,42,0.08);--radius:8px}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Microsoft YaHei,Arial,sans-serif}button,input,select,textarea{font:inherit;border:1px solid var(--border);border-radius:var(--radius)}button{min-height:38px;padding:8px 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span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.channel-dropdown-status{padding:12px;color:var(--muted);font-size:13px;line-height:1.4}.channel-dropdown-status.error{color:var(--red);font-weight:700}.video-option-thumbnail,.video-option-thumbnail-placeholder{width:96px;aspect-ratio:16/9;border-radius:6px;background:#e2e8f0}.video-option-thumbnail{object-fit:cover}.video-option-thumbnail-placeholder{display:grid;place-items:center;color:var(--muted);font-size:11px;font-weight:800}@keyframes url-title-marquee{0%,12%{transform:translateX(0)}to{transform:translateX(-50%)}}.modal-backdrop{position:fixed;inset:0;z-index:100;display:grid;place-items:center;padding:18px;background:rgba(15,23,42,.38)}.modal-panel{width:min(560px,100%);max-height:min(720px,calc(100vh - 36px));overflow:auto;border:1px solid var(--border);border-radius:var(--radius);background:#ffffff;box-shadow:var(--shadow);padding:16px}.modal-heading{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:14px}.modal-stack{display:grid;grid-gap:10px;gap:10px}.auth-tabs{display:grid;grid-template-columns:1fr 1fr;grid-gap:6px;gap:6px;margin-bottom:12px;padding:4px;border:1px solid var(--border);border-radius:var(--radius);background:var(--panel-soft)}.auth-tab{min-height:34px;border-color:transparent;background:transparent;color:var(--muted)}.auth-tab.active,.auth-tab:hover{border-color:var(--border-strong);background:#ffffff;color:var(--text)}.auth-form-stack{gap:12px}.auth-code-row{display:grid;grid-template-columns:minmax(0,1fr) 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58%,#eff6ff)}.topup-top{background:linear-gradient(135deg,#fbfdff,#eef6ff)}.plan-card-title-row{display:flex;align-items:center;justify-content:space-between;gap:12px}.pricing-card h3{margin:0;color:#080808;font-size:18px;line-height:1.2}.plan-card-top p{margin:0;color:#6e6e6e;font-size:13px;line-height:1.45}.plan-price-large{color:#070707;font-size:38px;font-weight:700;line-height:1.1;letter-spacing:0}.plan-price-line{display:flex;flex-wrap:wrap;gap:8px;align-items:baseline}.plan-old-price{color:#737373;font-size:21px;text-decoration:line-through}.plan-price-unit{color:#737373;font-size:17px}.annual-toggle{display:inline-grid;grid-template-columns:auto 42px;gap:8px;align-items:center;color:#8a8a8a;font-size:10px;font-weight:700}.annual-toggle 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var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:14px}.panel-heading{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:12px}.player-status-group{display:flex;flex-wrap:wrap;gap:8px;align-items:center}.time-readout{color:var(--text);font-feature-settings:"tnum";font-variant-numeric:tabular-nums;font-size:26px;font-weight:800}.player-frame{position:relative;width:100%;aspect-ratio:16/9;overflow:hidden;border-radius:var(--radius);background:#111827}#youtubePlayer,.player-frame iframe{width:100%;height:100%}.player-empty{position:absolute;inset:0;display:grid;place-items:center;color:#cbd5e1;font-weight:800;pointer-events:none}.control-strip{margin-top:12px}.inline-field{display:inline-flex;gap:8px;align-items:center;min-height:38px;color:var(--muted);font-size:13px;font-weight:700}.inline-field select{min-width:92px}.mark-panel{margin-top:10px;padding:10px;border:1px solid var(--border);border-radius:var(--radius);background:var(--panel-soft)}.mark-button{min-width:132px;background:var(--orange);border-color:var(--orange)}.mark-button:hover{background:#9a3412;border-color:#9a3412}.pending{min-width:min(320px,100%);color:var(--muted);font-size:14px;font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.status-text{margin:10px 0 0;color:var(--muted);font-size:14px;line-height:1.5}.transcript-preview{display:grid;grid-gap:6px;gap:6px;max-height:210px;overflow:auto;padding:10px;border:1px solid var(--border);border-radius:var(--radius);background:var(--panel-soft);font-size:13px;line-height:1.55}.transcript-line{display:grid;grid-template-columns:82px 1fr;grid-gap:8px;gap:8px}.transcript-time{color:var(--blue);font-feature-settings:"tnum";font-variant-numeric:tabular-nums;font-weight:700}.manual-import{margin-top:10px}.manual-import summary{cursor:pointer;color:var(--muted);font-weight:700}.export-output,.manual-import textarea{width:100%;margin-top:10px}.export-output{min-height:180px}.segment-panel{margin-top:14px}.segments{display:grid;grid-gap:10px;gap:10px}.empty-state{min-height:88px;display:grid;place-items:center;border:1px dashed var(--border-strong);border-radius:var(--radius);color:var(--muted);background:var(--panel-soft);text-align:center}.segment-row{display:grid;grid-template-columns:52px minmax(0,1fr);grid-template-areas:"index header" "index content";grid-gap:12px;gap:12px;align-items:start;padding:12px;border:1px solid var(--border);border-radius:var(--radius);background:#ffffff}.segment-row.active{border-color:#fdba74;background:#fff7ed}.segment-index{grid-area:index;color:var(--muted);font-weight:800;font-feature-settings:"tnum";font-variant-numeric:tabular-nums;text-align:center;padding-top:3px}.segment-main{display:contents}.segment-header{display:flex;grid-area:header;gap:14px;align-items:flex-start;justify-content:space-between;min-width:0}.segment-time-controls{--segment-time-column:9ch;--segment-time-middle-column:54px;display:inline-grid;grid-template-rows:auto auto;flex:0 0 auto;gap:6px;font-size:18px}.time-range-row{grid-template-columns:var(--segment-time-column) var(--segment-time-middle-column) var(--segment-time-column) max-content}.time-button-row,.time-range-row{display:grid;align-items:center;grid-column-gap:8px;column-gap:8px}.time-button-row{grid-template-columns:var(--segment-time-column) var(--segment-time-middle-column) var(--segment-time-column)}.time-range-middle{display:inline-flex;flex-direction:column;align-items:center;justify-content:flex-end;gap:3px;min-width:0}.segment-time-value{width:100%;color:var(--text);font-size:18px;font-weight:800;font-feature-settings:"tnum";font-variant-numeric:tabular-nums;line-height:1.2;text-align:center;white-space:nowrap}.segment-time-button{min-height:auto;padding:0;border:0;background:transparent;cursor:text}.segment-time-button:hover{background:transparent;color:var(--accent-strong)}.segment-time-button:focus-visible{outline:2px solid #99f6e4;outline-offset:3px}.segment-time-input{width:100%;min-height:auto;padding:0 3px;border-radius:4px;border-color:var(--accent);background:#ffffff;color:var(--text);font-size:18px;font-weight:800;font-feature-settings:"tnum";font-variant-numeric:tabular-nums;line-height:1.2;text-align:center}.time-range-arrow{color:var(--muted);font-size:14px;font-weight:800;line-height:1;text-align:center}.time-separator{justify-self:center;width:1px;min-height:56px;background:var(--border-strong)}.time-adjust-buttons{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));grid-gap:4px;gap:4px;width:100%}.time-adjust-buttons button{min-width:0;min-height:24px;padding:2px 0;font-size:11px}.segment-duration-pill{display:inline-flex;align-items:center;justify-content:center;min-height:22px;padding:2px 7px;border-radius:999px;background:#eef2f7;color:var(--muted);font-size:12px;font-weight:700;line-height:1;white-space:nowrap}.segment-content-row{display:grid;grid-area:content;grid-gap:10px;gap:10px;margin-top:4px}.segment-transcript{padding:9px 10px;border-left:3px solid var(--accent);background:#f8fafc;color:#243044;line-height:1.6;font-size:14px;white-space:pre-wrap}.segment-note-input,.segment-transcript{min-height:42px}.segment-note-input{width:100%;margin:0;overflow:hidden;background:#ffffff;color:var(--text);font-family:inherit;font-size:14px;line-height:1.6;resize:none}.segment-actions{flex:1 1 auto;min-width:0}.segment-action-row,.segment-actions{display:flex;justify-content:flex-end}.segment-action-row{flex-wrap:wrap;gap:8px;align-items:center}.segment-playback-group{display:grid;grid-template-columns:max-content max-content max-content;align-items:stretch;justify-self:start;width:max-content;max-width:100%;overflow:hidden;border:1px solid var(--border-strong);border-radius:var(--radius);background:#ffffff}.segment-playback-group>button,.segment-playback-group>select{min-height:38px;border:0;border-radius:0}.segment-playback-group>select{border-left:1px solid var(--border)}.segment-control-select{min-width:0;width:max-content;max-width:none;padding:2px 28px 2px 8px;color:var(--text);font-size:11px;font-weight:400;line-height:1.2}.segment-save-button.dirty{border-color:var(--accent);background:var(--accent);color:#ffffff}.segment-save-button.dirty:hover{border-color:var(--accent-strong);background:var(--accent-strong)}.segment-save-button.saved{border-color:var(--border-strong);background:#eef2f7;color:var(--muted)}.segment-save-button.saved:hover{border-color:var(--border-strong);background:#e2e8f0;color:var(--text)}@media (max-width:1080px){.topbar,.workspace-grid{grid-template-columns:1fr}}@media (max-width:760px){.app-shell{padding:10px}.load-form{grid-template-columns:1fr}.channel-dropdown{left:0;right:auto;width:100%}.video-dropdown-option{grid-template-columns:84px minmax(0,1fr)}.video-option-thumbnail,.video-option-thumbnail-placeholder{width:84px}.auth-code-row{grid-template-columns:1fr}.plan-grid,.plan-grid.membership-plan-grid{grid-template-columns:1fr;gap:14px}.membership-modal{padding:34px 12px 14px}.membership-hero{margin-bottom:18px}.membership-hero h2{font-size:24px}.membership-hero p{font-size:14px}.pricing-card{min-height:0;border-radius:22px}.plan-card-top{min-height:148px;border-radius:18px}.panel-heading{align-items:flex-start;flex-direction:column}.segment-row{grid-template-columns:40px minmax(0,1fr);grid-template-areas:"index header" "index content"}.segment-header{flex-direction:column;gap:10px}.segment-time-controls{--segment-time-column:8.5ch;--segment-time-middle-column:50px;max-width:100%;font-size:16px}.time-range-row{column-gap:6px}.time-range-row .segment-playback-group{grid-column:1/-1;margin-top:4px}.time-button-row{column-gap:6px}.segment-time-input,.segment-time-value{font-size:16px}.segment-content-row{grid-template-columns:1fr}.time-adjust-buttons button{font-size:10px}.segment-action-row,.segment-actions{justify-content:flex-start;width:100%}.segment-playback-group{width:max-content;grid-template-columns:max-content max-content max-content}}