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.book-heading{display:flex;align-items:center;justify-content:space-between;gap:20px;margin:32px 0 26px}.book-heading h2{font-size:1.8rem;letter-spacing:-.06em;line-height:1.2;margin:9px 0 12px}.book-heading p{font-size:.9rem;color:var(--muted)}.book-heading .eyebrow{font-size:.68rem}.book-layout{display:grid;grid-template-columns:minmax(250px,.75fr) minmax(0,1.6fr);gap:25px;align-items:start}.book-browser{border:1px solid var(--line);border-radius:16px;padding:20px;background:var(--panel);min-width:0}.book-browser label{display:block;font-size:.8rem;color:var(--muted);margin-bottom:10px}.book-browser .search{width:100%;min-width:0;font-size:.85rem;margin:0}.book-moments{display:flex;flex-wrap:wrap;gap:6px;margin:15px 0}.book-moments a{font-size:.7rem;padding:5px 9px;border:1px solid var(--line);border-radius:7px;color:var(--muted)}.book-moments a[aria-current],.book-moments a:hover{background:#35402c;border-color:#9aae71;color:var(--text)}.book-result-count{font-size:.73rem;color:var(--muted);margin:13px 0}.book-song-list{display:grid;gap:8px}.book-song-row{display:flex;align-items:center;gap:11px;padding:11px 12px;background:#151d17;border:1px solid var(--line);border-radius:10px;min-width:0;transition:border-color .15s}.book-song-row:hover{border-color:#76875b}.book-song-row[aria-current]{border-color:var(--green);background:#303b27}.book-row-art .book-art{height:35px;width:35px}.book-song-row>span:nth-child(2){display:grid;gap:5px;flex:1;min-width:0}.book-song-row strong{font-size:.8rem;line-height:1.4}.book-song-row small{font-size:.7rem;color:var(--muted)}.book-song-row>span:last-child{color:var(--green)}.book-detail{padding:29px;border:1px solid var(--line);border-radius:18px;background:var(--panel);min-width:0}.book-detail-top{display:flex;justify-content:space-between;gap:12px;align-items:center}.book-detail-top .tag{font-size:.65rem}.book-page{font-size:.75rem;color:var(--muted)}.book-detail-title{display:flex;align-items:center;gap:17px;margin:22px 0}.book-detail-title>.book-art{border:1px solid #93a56f40;background:#93a56f0c;border-radius:13px;padding:5px;width:78px;height:78px}.book-detail-title h2{font-size:1.65rem;line-height:1.3;letter-spacing:-.04em;margin:0 0 6px}.book-detail-title p{color:var(--green);font-size:.95rem}.book-intro{font-size:.9rem;color:var(--muted);line-height:1.8}.book-detail-actions{display:flex;flex-wrap:wrap;gap:8px;margin:22px 0}.book-detail-actions a{font-size:.82rem;padding:10px 13px;border:1px solid var(--line);border-radius:8px;color:var(--muted)}.book-detail-actions .active{color:var(--text);border-color:#a4ba77;background:#ffffff05}.book-detail .book-sheet{padding:0;border:0;margin:0;border-radius:0;background:none}.book-sheet .section-head{margin:0 0 16px;align-items:center}.book-sheet .call-response-key{display:flex;gap:15px;flex-wrap:wrap;font-size:.7rem;margin:0}.book-sheet .lyric-line{grid-template-columns:90px minmax(0,1fr);padding:16px;gap:5px 15px;margin-bottom:8px}.book-sheet .lyric-line .book-lyric{font-size:.98rem;line-height:1.55;color:var(--text);grid-column:2;margin:0}.book-sheet .lyric-line .line-translation{grid-column:2;font-size:.8rem;line-height:1.6}.book-sheet .lyric-role{font-size:.63rem}.book-sheet .lyric-line.chorus{margin-left:20px}.book-sheet.hide-translations .line-translation{display:none}.book-focus{display:grid;gap:4px;padding:15px 17px;background:#111b12;border-radius:10px;margin:18px 0;color:var(--muted);font-size:.82rem;line-height:1.7}.book-focus strong{color:var(--text)}.book-context{margin:20px 0;padding:18px;background:#d4e6ac09;border:1px solid #a4ba772b;border-radius:10px}.book-context summary{font-weight:650;cursor:pointer;font-size:.86rem}.book-context p{font-size:.85rem;line-height:1.8;color:var(--muted);margin:12px 0 0}.book-small-heading{font-size:.9rem;margin:24px 0 13px}.book-word-chips{display:flex;flex-wrap:wrap;gap:8px}.book-word-chips>a{display:grid;gap:5px;flex:1;min-width:110px;border:1px solid var(--line);border-radius:9px;padding:12px;background:#101a13}.book-word-chips strong{color:var(--green);font-size:.88rem}.book-word-chips span{color:var(--muted);font-size:.73rem;line-height:1.5}.book-recording-link{display:block;font-size:.85rem;line-height:1.7;padding:15px 0;color:var(--orange)}.book-recording-link small{display:block;color:var(--muted)}.book-source{margin-top:20px;padding-top:18px;border-top:1px solid var(--line);font-size:.75rem;color:var(--muted);line-height:1.8}.book-source summary{cursor:pointer}.book-source p{margin:10px 0}.book-empty{padding:24px}.book-empty h2{font-size:1.3rem}.book-empty p{margin-bottom:18px}
.book-rehearsal{padding:22px;background:#111b14;border:1px solid var(--line);border-radius:13px}.book-practice-top{display:flex;align-items:center;justify-content:space-between;gap:10px}.book-practice-top .eyebrow{font-size:.65rem;margin:0}.book-practice-top>span:last-child{font-size:.8rem;color:var(--muted)}.book-practice-track{display:flex;gap:7px;margin:16px 0}.book-practice-track span{height:5px;flex:1;background:#384036;border-radius:3px}.book-practice-track .current{background:var(--orange)}.book-practice-track .done{background:var(--green)}.book-rehearsal>p{font-size:.82rem;color:var(--muted);line-height:1.7}.book-call,.book-response{margin:16px 0;padding:20px;border-left:3px solid var(--orange);background:#f5a76c0a;border-radius:0 9px 9px 0}.book-response{margin-left:18px;border-color:var(--green);background:#c3db900a}.book-call small,.book-response small{font-size:.65rem;color:var(--orange);letter-spacing:.08em}.book-response small{color:var(--green)}.book-call p,.book-response p{font-size:1.15rem;color:var(--text);margin:10px 0;line-height:1.6}.book-call>span,.book-response>span{font-size:.8rem;color:var(--muted)}.book-complete{display:grid;place-items:center;background:#c3db9010;width:65px;height:65px;color:var(--green);font-size:2rem;border:1px solid #c3db9040;border-radius:50%;margin-bottom:20px}.book-rehearsal h3{line-height:1.5}.book-rehearsal .inline{margin-top:20px}
.book-guide-nav{display:flex;flex-wrap:wrap;gap:20px;border-bottom:1px solid var(--line);margin:0 0 32px}.book-guide-nav a{padding:8px 2px 14px;font-size:.82rem;color:var(--muted);border-bottom:2px solid transparent}.book-guide-nav a[aria-current]{border-color:var(--orange);color:var(--text)}.book-guide-intro{max-width:740px;margin-bottom:28px}.book-guide-intro .eyebrow{font-size:.68rem}.book-guide-intro h2{font-size:1.8rem;line-height:1.3;letter-spacing:-.05em;margin:10px 0 15px}.book-guide-intro p{font-size:.92rem;line-height:1.8;color:var(--muted)}.song-form-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.song-form-card{padding:23px;background:var(--panel);border:1px solid var(--line);border-radius:14px;min-width:0}.song-form-card:last-child{grid-column:1/-1;display:grid;grid-template-columns:1fr 2fr;gap:10px 30px}.song-form-card:last-child>*{grid-column:1}.song-form-card:last-child>p,.song-form-card:last-child>.book-form-action{grid-column:2;grid-row:2/4}.song-form-card:last-child>.book-form-action{grid-row:4/6}.book-form-number{font-size:.67rem;letter-spacing:.1em;color:var(--green)}.song-form-card h3{font-size:1.2rem;margin:12px 0 7px}.song-form-card>strong{font-size:.8rem;color:var(--muted);font-weight:500}.song-form-pattern{display:flex;align-items:center;gap:4px;margin:24px 0}.song-form-pattern span{flex:1;max-width:40px;display:grid;place-items:center;height:35px;border-radius:6px;font-size:.72rem;font-weight:700}.song-form-pattern .solo{color:var(--orange);border:1px solid #f5a76c45;background:#f5a76c0d}.song-form-pattern .chorus{color:var(--green);border:1px solid #c3db9045;background:#c3db900d}.song-form-pattern i{font-size:.65rem;color:var(--muted);font-style:normal}.song-form-card>p{font-size:.83rem;line-height:1.8;color:var(--muted)}.book-form-action{padding-top:16px;border-top:1px solid var(--line);margin-top:20px;font-size:.8rem;line-height:1.7}.book-diagram-key{display:flex;gap:15px;flex-wrap:wrap;font-size:.7rem;color:var(--muted);margin:18px 0 32px}.book-diagram-key>span:first-child{color:var(--orange)}.book-diagram-key>span:nth-child(2){color:var(--green)}.book-guide-notes{display:grid;grid-template-columns:1fr 1fr;gap:25px;margin:30px 0}.book-guide-notes>section{padding:25px;border:1px solid var(--line);background:var(--panel);border-radius:14px}.book-guide-notes h3{font-size:1rem;line-height:1.5;margin-bottom:13px}.book-guide-notes p{font-size:.85rem;line-height:1.8;color:var(--muted);margin:10px 0 20px}.book-situation-links{display:grid;gap:10px;font-size:.8rem;color:var(--green)}.book-quiz{border:1px solid #b3c78555;border-radius:14px;padding:27px;background:#25311f;margin:28px 0}.book-quiz .eyebrow{font-size:.67rem}.book-quiz h3{margin:12px 0 20px;font-size:1.15rem;line-height:1.7}.book-quiz-options{display:grid;gap:9px;max-width:760px}.book-quiz-options>button{padding:15px 18px;text-align:left;background:#182016;border:1px solid #c3db9040;border-radius:9px;line-height:1.5;font-size:.85rem;color:var(--text)}.book-quiz-options>button:hover:enabled{border-color:var(--green)}.book-quiz-options>button.correct{background:#3d4c2d;border-color:var(--green)}.book-quiz-options>button.wrong{border-color:var(--orange);background:#523d2c}.book-quiz [role=status]>p{margin:20px 0;font-size:.85rem;line-height:1.8;color:var(--muted)}
.book-word-toolbar{display:flex;align-items:center;gap:15px;justify-content:space-between;margin-bottom:25px}.book-word-toolbar label{flex:1;max-width:600px}.book-word-toolbar input{width:100%}.song-word-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.song-word-grid article{padding:23px;border:1px solid var(--line);border-radius:13px;background:var(--panel);display:flex;flex-direction:column;min-width:0}.song-word-grid .eyebrow{font-size:.6rem;color:var(--muted)}.song-word-grid h3{font-size:1.4rem;margin:12px 0 7px;color:var(--green)}.song-word-grid article>strong{font-size:.85rem;line-height:1.6;font-weight:550}.song-word-grid article>p{font-size:.8rem;line-height:1.7;margin:15px 0 18px;color:var(--muted);flex:1}.song-word-grid article>div{display:grid;gap:10px;font-size:.75rem}.song-word-grid article>div button{text-align:left;font-size:inherit}.book-pronunciation{display:grid;grid-template-columns:minmax(220px,.7fr) minmax(0,1.6fr);gap:22px}.book-tip-buttons{display:grid;gap:10px}.book-tip-buttons button{padding:20px;display:flex;align-items:center;gap:20px;text-align:left;background:var(--panel);border:1px solid var(--line);border-radius:12px;color:var(--muted)}.book-tip-buttons button[aria-pressed=true]{border-color:var(--green);background:#303c27}.book-tip-buttons strong{font-size:1.5rem;min-width:70px;color:var(--green)}.book-tip-buttons span{font-size:.8rem}#book-tip-detail{padding:28px;border:1px solid var(--line);border-radius:14px;background:var(--panel)}#book-tip-detail .eyebrow{font-size:.65rem}#book-tip-detail h3{font-size:1.4rem;line-height:1.4;margin:16px 0}#book-tip-detail>p{font-size:.9rem;line-height:1.8;color:var(--muted)}#book-tip-detail .book-tip-example{color:var(--green);font-size:1.25rem;margin:15px 0}#book-tip-detail .tip{margin:25px 0;font-size:.85rem}#book-tip-detail .source-note{font-size:.7rem}
.language-song-bridge{display:flex;align-items:center;gap:25px;padding:25px;border:1px solid #80945955;border-radius:16px;background:linear-gradient(120deg,#2a3423,#19231a);margin:28px 0}.book-bridge-symbol{font-family:Manrope,sans-serif;font-size:2rem;line-height:.9;color:var(--green);text-align:center;min-width:70px}.book-bridge-symbol span{font-size:1.1rem;display:inline-block;transform:rotate(90deg);margin:8px}.language-song-bridge .eyebrow{font-size:.65rem}.language-song-bridge h2{font-size:1.3rem;line-height:1.4;margin:10px 0}.language-song-bridge p{font-size:.85rem;line-height:1.7;color:var(--muted);margin-bottom:18px}.language-song-bridge .inline{flex-wrap:wrap}.book-card-mark{display:grid;place-items:center;margin:12px auto 0;width:65px;height:65px;background:#c3db900c;border:1px solid #c3db9033;border-radius:50%;color:var(--green);font-size:1.7rem}
@media(max-width:1100px){.book-layout{grid-template-columns:minmax(230px,.8fr) minmax(0,1.4fr);gap:18px}.book-detail{padding:22px}.book-detail-title h2{font-size:1.4rem}.song-form-grid{grid-template-columns:1fr 1fr}.song-form-card:last-child{display:block;grid-column:auto}.song-word-grid{grid-template-columns:1fr 1fr}.book-heading h2,.book-guide-intro h2{font-size:1.55rem}}
@media(max-width:800px){.book-layout{grid-template-columns:1fr}.book-song-list{max-height:300px;overflow:auto;overscroll-behavior:contain;scrollbar-color:#73865a #1b231b;padding:2px}.book-browser{padding:18px}.book-detail-title>.book-art{width:60px;height:60px}.book-pronunciation{grid-template-columns:1fr}.book-tip-buttons{grid-template-columns:1fr 1fr}.book-tip-buttons button{padding:14px;gap:10px;flex-direction:column;align-items:start}.book-tip-buttons strong{font-size:1.25rem}.book-guide-notes{grid-template-columns:1fr;gap:16px}.book-word-toolbar{align-items:stretch;flex-direction:column}.book-word-toolbar label{max-width:none}.book-word-toolbar .btn{align-self:start}.book-heading{align-items:start;flex-direction:column}.book-heading .btn{font-size:.8rem}}
@media(max-width:500px){.song-view-nav{width:100%;gap:3px;padding:4px}.song-view-nav a{flex:1;padding:11px 5px;gap:5px;font-size:.74rem}.song-view-nav a span{font-size:.6rem;padding:0 5px}.book-invitation{padding:18px;gap:12px}.book-invitation-art{display:none}.book-invitation strong{font-size:1rem}.book-invitation>span:nth-child(2)>span:last-child{font-size:.78rem}.book-detail{padding:18px}.book-detail-title{gap:12px}.book-detail-title h2{font-size:1.3rem;overflow-wrap:anywhere}.book-detail-title>.book-art{width:50px;height:50px}.book-detail-title p{font-size:.82rem}.book-sheet .lyric-line{grid-template-columns:1fr;padding:14px;gap:6px}.book-sheet .lyric-role{grid-column:1;grid-row:auto}.book-sheet .lyric-line .book-lyric,.book-sheet .lyric-line .line-translation{grid-column:1}.book-sheet .lyric-line.chorus{margin-left:12px}.book-sheet .section-head{gap:10px;flex-wrap:wrap}.book-detail-actions a{font-size:.74rem;padding:9px}.song-form-grid,.song-word-grid{grid-template-columns:1fr}.book-guide-nav{gap:16px}.book-guide-nav a{font-size:.73rem}.book-rehearsal{padding:16px}.book-call,.book-response{padding:15px}.book-response{margin-left:10px}.book-quiz{padding:20px}.language-song-bridge{padding:20px;gap:0}.book-bridge-symbol{display:none}.language-song-bridge h2{font-size:1.15rem}.book-tip-buttons span{font-size:.73rem}.book-word-chips>a{min-width:100px}.book-guide-intro h2,.book-heading h2{font-size:1.4rem}}
.book-song-row .book-video-badge{width:fit-content;display:inline-flex;align-items:center;gap:5px;font-size:.64rem;line-height:1.4;padding:3px 7px;border-radius:5px;border:1px solid #c3db902d;color:var(--green);background:#c3db9009}.book-song-row .book-video-badge.missing{color:var(--muted);border-color:var(--line);background:transparent}.book-video-filter{margin-top:12px}.book-video-filter select{width:100%;margin-top:7px}.book-recording{margin:24px 0;border:1px solid #9bb67538;border-radius:13px;overflow:hidden;background:#111a13}.book-recording-heading{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:20px 20px 0}.book-recording-heading .eyebrow{font-size:.6rem;margin:0 0 7px;color:var(--green)}.book-recording-heading h3{font-size:1.1rem;margin:0}.book-video-label{font-size:.7rem;color:var(--green);border:1px solid #c3db9033;border-radius:6px;padding:6px 10px;white-space:nowrap}.book-recording .media-section{margin:16px 20px}.book-recording .media-controls{flex-wrap:wrap;gap:12px}.book-recording .media-credit{flex-wrap:wrap;gap:8px 18px;line-height:1.7}.book-recording .media-credit a{overflow-wrap:anywhere}.book-version-note{padding:16px 20px 20px;border-top:1px solid #c3db9020;font-size:.76rem;line-height:1.75;color:var(--muted)}.book-version-note strong{color:var(--green);font-size:.73rem}.book-version-note p{margin:5px 0 0}.book-version-note a{display:inline-block;margin-top:10px}.book-recording-empty{display:flex;gap:15px;padding:20px;align-items:flex-start}.book-recording-empty h3{font-size:.95rem;margin:0 0 8px}.book-recording-empty p{color:var(--muted);font-size:.8rem;line-height:1.8;margin:0 0 12px}.book-recording-empty a{font-size:.8rem}.book-video-icon{display:grid;place-items:center;flex:none;width:38px;height:38px;border:1px solid var(--line);border-radius:50%;color:var(--green);font-size:1.3rem}.media-study-drawer{border-top:1px solid var(--line);padding-top:14px;margin-top:16px}.media-study-drawer>summary{font-size:.8rem;cursor:pointer;color:var(--muted);line-height:1.5}.media-study-drawer[open]>summary{margin-bottom:16px}.book-recording .recording-study{margin:0}.book-recording .recording-steps{grid-template-columns:1fr}.book-recording .media-poster-caption strong{font-size:1rem}.book-recording .media-poster-caption>span{font-size:.75rem;line-height:1.5}
@media(max-width:680px){.book-recording-heading{padding:16px 14px 0}.book-recording .media-section{margin:14px}.book-version-note{padding:14px}.book-recording .segment-fields{grid-template-columns:minmax(0,1fr) auto}.book-recording-empty{padding:16px;gap:12px}.book-recording .media-poster-caption{padding:12px}.book-recording .media-poster-caption>span{font-size:.67rem}.book-recording .media-poster-caption strong{font-size:.85rem}.book-recording .media-controls{font-size:.75rem}.book-recording .media-help,.book-recording .media-credit{font-size:.67rem}}

.book-recording .media-section{width:auto}.book-video-filter>.nv-select{display:block;width:100%;margin-top:7px}