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span{font-size:10px;color:#aaa}.guide-keyboard{height:132px}.chord-key-dot{position:absolute;width:7px;height:7px;left:50%;transform:translateX(-50%);bottom:30%;border-radius:50%;background:#203e4d}.piano-black .chord-key-dot{bottom:18%;background:#d7e8f1}.chord-play-row{display:flex;align-items:center;gap:14px;margin:20px 0 12px}.chord-arpeggio{background:transparent;color:#eee;border:1px solid #666;border-radius:100px;padding:12px 18px;min-height:44px;font-size:12px!important}.chord-play-row>span{margin-left:auto;font-size:11px;color:#aaa}.chord-hand-tip{font-size:12px;color:#bbb;line-height:1.7;max-width:780px;margin:16px 0 0}.guide-return{display:block;width:fit-content;margin:18px auto 0;color:#ccc;font-size:12px;text-underline-offset:5px}.guide-steps{margin:0;padding-left:24px;max-width:820px}.guide-steps li{padding:0 0 18px 8px;line-height:1.85;color:#555;font-size:15px}.guide-steps li strong{font-weight:550;color:#222}.guide-examples{display:flex;gap:8px;flex-wrap:wrap;margin-top:24px}.chord-example{border:1px solid #d4d4d4;border-radius:100px;background:#fff;color:#171717;padding:10px 16px;min-height:44px;font-size:13px!important;display:inline-flex;gap:14px;align-items:center}.chord-example:hover{border-color:#171717;background:#f0f0f0}.chord-example>span{font-size:15px;color:#888}.letter-diagram{padding:28px 24px;background:#fff;border:1px solid #ddd;border-radius:16px;margin:28px 0}.letter-key-row{display:grid;grid-template-columns:repeat(7,1fr);gap:8px}.letter-key-row>div{display:grid;gap:12px;padding:18px 8px;text-align:center;border:1px solid #ddd;border-radius:0 0 8px 8px;background:linear-gradient(#fff,#f4f4f4)}.letter-key-row strong{font-size:30px;font-weight:500}.letter-key-row span{color:#999}.letter-key-row b{font-size:15px;font-weight:400}.letter-diagram figcaption,.interval-diagram figcaption,.extension-diagram figcaption{font-size:12px;line-height:1.8;color:#777;margin-top:20px}.interval-pair{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin:30px 0}.interval-diagram{border:1px solid #ddd;border-radius:16px;padding:24px;background:#fff;margin:0;min-width:0}.interval-diagram h3{font-size:20px}.interval-steps{display:flex;align-items:center;justify-content:space-between;gap:7px;margin:24px 0}.interval-steps>div{display:grid;gap:9px;text-align:center}.interval-steps strong{font-size:23px;font-weight:500}.interval-steps small{font-size:11px;color:#888}.interval-steps>span{font-size:10px;color:#777;text-align:center;line-height:1.6}.interval-steps b{font-weight:500}.interval-steps i{display:block;font-style:normal;font-size:24px;color:#999}.chord-table-scroll{overflow-x:auto;border:1px solid #ddd;border-radius:14px;background:#fff;margin:26px 0}.chord-reference{border-collapse:collapse;width:100%;min-width:680px;font-size:13px}.chord-reference caption{text-align:left;padding:18px 20px;color:#666;font-size:12px}.chord-reference th,.chord-reference td{padding:14px 18px;border-top:1px solid #e6e6e6;text-align:left;vertical-align:middle;line-height:1.6}.chord-reference thead th{background:#f1f1f1;font-weight:550;color:#444;font-size:11px}.chord-reference tbody th{font-weight:500}.chord-reference .chord-example{font-size:12px!important;padding:6px 10px;gap:8px;white-space:nowrap}.chord-reference td{color:#555}.chord-reference td:nth-child(3){white-space:nowrap}.extension-diagram{border:1px solid #ddd;border-radius:16px;background:#fff;padding:26px;margin:28px 0}.extension-diagram>div{display:grid;grid-template-columns:repeat(7,1fr);gap:8px}.extension-diagram span{display:grid;gap:12px;border-left:1px solid #ddd;text-align:center;padding:12px 4px}.extension-diagram span:first-child{border-left:0}.extension-diagram strong{font-size:22px;font-weight:500}.extension-diagram small{font-size:12px;color:#777}.inversion-diagram{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-bottom:28px}.inversion-diagram>div{border:1px solid #ddd;border-radius:12px;padding:20px;background:#fff;display:grid;gap:14px}.inversion-diagram strong{font-size:12px;font-weight:500;color:#777}.inversion-diagram span{font-size:19px;letter-spacing:-.02em}.tool-section .guide-sources{font-size:11px;line-height:1.9;margin-top:32px}.guide-sources a{color:#555;text-underline-offset:3px}.generator-guide-link{display:block;width:fit-content;color:#ccc;font-size:12px;text-underline-offset:4px;margin:16px 0 2px}.generator-learn-link{color:#bbb;font-size:10px;line-height:1.5;text-underline-offset:3px}
@media(max-width:820px){.interval-pair{grid-template-columns:1fr}.chord-result h2{font-size:36px}.letter-key-row{gap:4px}.letter-key-row strong{font-size:24px}.letter-key-row b{font-size:12px}.letter-diagram{padding:20px 14px}.chord-reference{font-size:12px}.inversion-diagram{grid-template-columns:1fr}.guide-keyboard{height:118px}.extension-diagram{padding:20px 12px}.extension-diagram strong{font-size:19px}.chord-play-row{flex-wrap:wrap}.chord-play-row>span{margin-left:0}.chord-guide-page .tool-intro h1{font-size:36px}}
@media(max-width:540px){body.chord-guide-page .guide-fields{grid-template-columns:1fr 1fr}.guide-fields label:last-child{grid-column:1/-1}.chord-result{gap:12px;margin-top:22px}.chord-result h2{font-size:34px}.chord-result p{font-size:10px}.chord-formula-result strong{font-size:12px}.chord-formula-result>span{font-size:9px}.chord-note-list{gap:6px}.chord-note-list li{padding:9px 11px;gap:8px}.chord-note-list strong{font-size:15px}.guide-keyboard{height:112px}.chord-arpeggio{padding:10px 14px;font-size:11px!important}.chord-play-row{gap:10px}.chord-play-row>span{flex-basis:100%;font-size:10px}.letter-key-row>div{padding:14px 2px;gap:10px}.letter-key-row strong{font-size:23px}.letter-key-row b{font-size:11px}.guide-steps li{font-size:14px}.extension-diagram>div{gap:2px}.extension-diagram strong{font-size:17px}.extension-diagram small{font-size:10px}.chord-guide-page .tool-intro h1{font-size:32px}.guide-return{font-size:11px;line-height:1.7}.chord-key-dot{width:6px;height:6px}}
.chord-voicing-switch{display:inline-flex;gap:4px;padding:4px;border:1px solid #555;border-radius:100px;margin-top:22px;background:#292929}.chord-voicing-switch button{background:transparent;border:0;border-radius:100px;color:#bbb;min-height:38px;padding:8px 20px;font-size:12px!important}.chord-voicing-switch button[aria-pressed=true]{background:#f4f4f4;color:#171717}.chord-voicing-note{font-size:11px;color:#aaa;line-height:1.7;margin:10px 0 0;max-width:700px}