:root{--color-background:#0d0d0d;--color-surface:#1a1a1a;--color-border:#2a2a2a;--color-primary:#58cc02;--color-lime:#58cc02;--color-sky:#1cb0f6;--color-yellow:#ffd93d;--color-coral:#ff6f61;--color-text-primary:#fff;--color-text-secondary:#b3b3b3;--color-on-primary:#0d0d0d;--tint-lime-10:#58cc0210;--tint-lime-30:#58cc0230;--tint-sky-12:#1cb0f612;--tint-yellow-18:#ffd93d18;--tint-coral-18:#ff6f6118;--space-xs:4px;--space-sm:8px;--space-md:12px;--space-lg:16px;--space-xl:24px;--space-xxl:32px;--radius-sm:8px;--radius-md:12px;--radius-lg:16px;--radius-full:9999px;--font-sans:-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--font-mono:ui-monospace, Menlo, Consolas, 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[data-disabled=true]{opacity:.4;cursor:default}.settings{gap:var(--space-lg);flex-direction:column;max-width:640px;display:flex}.settings>h1{margin-bottom:var(--space-sm)}.settings-section{gap:var(--space-md);flex-direction:column;display:flex}.settings-heading{font-size:var(--type-caption-size);letter-spacing:.5px;text-transform:uppercase;color:var(--color-text-secondary);margin:0;font-weight:700}.settings-row{justify-content:space-between;gap:var(--space-lg);flex-wrap:wrap;display:flex}.settings-value{font-weight:600}.settings-manage{border-left:4px solid var(--color-lime);margin:0}.settings-toggle{align-items:flex-start;gap:var(--space-md);cursor:pointer;display:flex}.settings-toggle input{width:20px;height:20px;accent-color:var(--color-lime);margin-top:2px}.settings-toggle-help{display:block}.settings .btn{align-self:flex-start}.result-placeholder,.not-found{align-items:flex-start;gap:var(--space-md);flex-direction:column;max-width:520px;display:flex}.result-placeholder p,.not-found p{margin:0}@media (width<=720px){.app-header-inner{gap:var(--space-sm) var(--space-md);padding:var(--space-sm) var(--space-lg);flex-wrap:wrap}.app-nav{order:3;width:100%}.app-nav-link{flex:1;justify-content:center}.app-signout-label{display:none}.app-main{padding:var(--space-lg)}.library-header{flex-direction:column;align-items:stretch}.library-search{flex-basis:auto}.library-item-type{display:none}.plan-usage{min-width:0}}@media (width<=400px){.logo-text{display:none}}.result{gap:var(--space-lg);flex-direction:column;display:flex}.result-header{align-items:center;gap:var(--space-md);display:flex}.result-back{border-radius:var(--radius-md);border:1px solid var(--color-border);width:36px;height:36px;color:var(--color-text-primary);flex-shrink:0;justify-content:center;align-items:center;display:inline-flex}.result-back:hover{background:var(--color-surface);text-decoration:none}.result-heading{flex:1;min-width:0}.result-title{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.result-meta{align-items:center;gap:var(--space-sm);margin-top:2px;display:flex}.result-trashed{border-color:var(--color-yellow);background:var(--tint-yellow-18)}.result-grid{gap:var(--space-lg);grid-template-columns:minmax(0,5fr) minmax(0,6fr);align-items:start;display:grid}.result-left,.result-right{gap:var(--space-md);flex-direction:column;min-width:0;display:flex}.result-left{max-height:calc(100vh - 96px);position:sticky;top:80px}.result-transcript-card{flex-direction:column;flex:1;min-height:0;display:flex;overflow:hidden}.result-transcript-card .transcript{min-height:0;padding-right:var(--space-xs);overflow-y:auto}.section-label{margin:0 0 var(--space-sm);font-size:var(--type-caption-size);letter-spacing:.5px;text-transform:uppercase;color:var(--color-text-secondary);align-items:center;gap:var(--space-sm);font-weight:700;display:flex}.tab-btn-mobile{display:none}.media-video{border-radius:var(--radius-md);border:1px solid var(--color-border);background:#000;width:100%;max-height:320px}.media-audio{gap:var(--space-xs);background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-md);padding:var(--space-sm) var(--space-md);flex-direction:column;display:flex}.media-audio-el{width:100%}.media-clock{font-variant-numeric:tabular-nums;align-self:flex-end}.media-youtube{aspect-ratio:16/9;border-radius:var(--radius-md);border:1px solid var(--color-border);background:#000;width:100%;position:relative;overflow:hidden}.media-youtube iframe{border:0;width:100%;height:100%;position:absolute;inset:0}.media-loading{border-radius:var(--radius-md);height:56px}.media-notice{gap:var(--space-md);padding:var(--space-md);border:1px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-surface);color:var(--color-sky);align-items:flex-start;display:flex}.media-notice p,.media-notice strong{color:var(--color-text-primary);margin:0}.media-notice p{margin-top:2px}.transcript{flex-direction:column;display:flex}.transcript-empty,.transcript-note{margin:0 0 var(--space-sm)}.transcript-bubble{background:var(--color-surface);border:1px solid var(--color-border);border-left-width:3px;border-left-color:var(--color-border);border-radius:12px;margin-bottom:6px;padding:8px}.transcript-bubble-active{border-width:1.5px 1.5px 1.5px 3px;border-color:var(--color-lime);background:#58cc0214}.transcript-line{color:var(--color-text-primary);cursor:pointer;margin:0;font-size:15px;line-height:19px}.transcript-speaker{font-size:11px;font-weight:700}.transcript-speaker-row{margin-bottom:4px;display:block}.transcript-time{color:var(--color-text-secondary);cursor:pointer;font-variant-numeric:tabular-nums;white-space:pre;background:0 0;border:0;padding:0;font-size:11px}.transcript-time:hover:not(:disabled){text-decoration:underline}.transcript-time:disabled{cursor:default}.transcript-time.is-active{color:var(--color-lime)}.karaoke-word{color:var(--color-lime);background:0 0;font-weight:600}.transcript-youtube-note{border:1px solid var(--color-sky);color:var(--color-sky);background:#1cb0f61a;border-radius:8px;align-items:center;gap:8px;margin-bottom:8px;padding:10px;font-size:12px;display:flex}.tab-strip{gap:var(--space-xs);padding-bottom:2px;display:flex;overflow-x:auto}.tab-btn{border:1px solid var(--color-border);background:var(--color-surface);color:var(--color-text-secondary);cursor:pointer;border-radius:999px;flex-shrink:0;padding:6px 14px;font-size:13px;font-weight:600}.tab-btn.is-active{color:var(--color-lime);border-color:var(--color-lime);background:var(--tint-lime-10)}.tab-panel{min-height:320px}.tab-body{gap:var(--space-lg);flex-direction:column;display:flex}.row-actions{gap:var(--space-sm);flex-wrap:wrap;align-items:center;display:flex}.chip-group{gap:var(--space-xs);flex-direction:column;display:flex}.chips{gap:var(--space-sm);flex-wrap:wrap;display:flex}.chip{border:1px solid var(--color-border);background:var(--color-surface);color:var(--color-text-primary);cursor:pointer;border-radius:999px;padding:6px 14px;font-size:13px;font-weight:600}.chip:hover{border-color:#3a3a3a}.chip-active{background:var(--tint-lime-30);border-color:var(--color-lime);color:var(--color-lime)}.select{appearance:auto;min-height:40px;padding:0 var(--space-md);border-radius:var(--radius-md)}.inline-error{justify-content:space-between;gap:var(--space-md);align-items:center;display:flex}.toast{background:var(--color-surface);border:1px solid var(--color-lime);padding:var(--space-sm) var(--space-lg);z-index:20;border-radius:999px;font-weight:600;position:fixed;bottom:24px;left:50%;transform:translate(-50%)}.upgrade-notice{gap:var(--space-sm);border-left:4px solid var(--color-yellow);flex-direction:column;display:flex}.upgrade-notice-text{margin:0}.upgrade-notice-details summary{width:auto;list-style:none;display:inline-flex}.upgrade-notice-details summary::-webkit-details-marker{display:none}.upgrade-notice-body{margin-top:var(--space-md);gap:var(--space-xs);flex-direction:column;display:flex}.upgrade-notice-body p{margin:0}.summary-main{border-left:4px solid var(--color-lime);border-radius:var(--radius-md);padding:var(--space-md)}.summary-main-text{margin:0;font-size:16px;line-height:24px}.summary-regenerated{text-transform:none;letter-spacing:0}.key-points{gap:var(--space-sm);flex-direction:column;margin:0;padding:0;list-style:none;display:flex}.key-point{border-radius:var(--radius-md);padding:var(--space-md);font-size:15px;line-height:22px}.regen-row{gap:var(--space-md);flex-wrap:wrap;align-items:flex-end;display:flex}.regen-row .field{min-width:180px}.concept-grid{gap:var(--space-sm);grid-template-columns:repeat(auto-fill,minmax(220px,1fr));display:grid}.concept-card{border-radius:var(--radius-md);background:var(--color-surface);padding:var(--space-md);border:1px solid 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var(--color-border);width:26px;height:26px;color:var(--color-text-secondary);border-radius:50%;flex-shrink:0;place-items:center;font-size:12px;font-weight:700;display:grid}.quiz-option.is-correct{background:#00d26a1a;border-color:#00d26a}.quiz-option.is-correct .quiz-option-letter{color:#00d26a;border-color:#00d26a}.quiz-option.is-wrong{background:#ff4d4d1a;border-color:#ff4d4d}.quiz-option.is-wrong .quiz-option-letter{color:#ff4d4d;border-color:#ff4d4d}.quiz-score{align-items:center;gap:var(--space-xs);text-align:center;flex-direction:column;display:flex}.quiz-score-big{color:var(--color-lime);font-size:40px;font-weight:800;line-height:1.1}.quiz-review{gap:var(--space-sm);flex-direction:column;margin:0;padding-left:20px;display:flex}.quiz-review-item{border-left:3px solid #00d26a;flex-direction:column;gap:2px;padding-left:4px;display:flex}.quiz-review-item.is-wrong{border-left-color:#ff4d4d}.flash-header{align-items:center;gap:var(--space-md);display:flex}.flash-progress{gap:var(--space-xs);flex-direction:column;flex:1;display:flex}.flashcard{perspective:1200px;cursor:pointer;text-align:center;background:0 0;border:0;width:100%;min-height:260px;padding:0}.flashcard-inner{width:100%;min-height:260px;transform-style:preserve-3d;transition:transform .4s;display:block;position:relative}.flashcard.is-flipped .flashcard-inner{transform:rotateY(180deg)}.flashcard-face{padding:var(--space-xl);border-radius:var(--radius-lg);border:1px solid 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p{margin:0;font-size:14px;line-height:20px}.dialog{border:1px solid var(--color-border);border-radius:var(--radius-lg);background:var(--color-surface);color:var(--color-text-primary);width:min(440px,100vw - 32px);padding:0}.dialog::backdrop{background:#0009}.dialog-body{padding:var(--space-xl);gap:var(--space-md);flex-direction:column;display:flex}.dialog-body p{margin:0}.share-options,.share-result{gap:var(--space-sm);flex-direction:column;display:flex}.dialog-close{align-self:flex-end}@media (width<=960px){.result-grid{grid-template-columns:1fr}.result-left{max-height:none;position:static}.result-transcript-card{display:none}.tab-btn-mobile{display:inline-flex}.mindmap-viewport{height:400px}}@media (width>=961px){.tab-transcript-mobile{display:none}}.review{gap:var(--space-lg);flex-direction:column;max-width:640px;margin:0 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