.app{max-width:1080px;margin:0 auto;padding:16px 20px 40px;display:flex;flex-direction:column;gap:14px}header{display:flex;align-items:center;justify-content:space-between}.lockup{display:flex;align-items:center;gap:10px}.lockup-text{display:flex;flex-direction:column;gap:1px;line-height:1.15}.wordmark{font-size:19px;font-weight:600;letter-spacing:-.02em}.wordmark span{font-weight:400}.tagline{font-size:11px;font-weight:500;color:var(--text-2);letter-spacing:.005em}@media(max-width:640px){.tagline{display:none}}.header-buttons{display:flex;align-items:center;gap:8px}.copy-link,.export-pdf{height:34px;padding:0 14px;border-radius:10px;border:1px solid var(--hairline);background:var(--elevated);font-size:13px;font-weight:500}.copy-link.on{background:var(--tint);border-color:var(--tint);color:#0e1116;font-weight:600}.theme-toggle,.help-toggle{width:34px;height:34px;border-radius:10px;border:1px solid var(--hairline);background:var(--elevated);font-size:15px;line-height:1}.help-toggle{font-weight:700;font-size:14px}.help-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;z-index:40;background:#00000073;display:flex;justify-content:flex-end}.help-panel{width:min(400px,100vw);height:100%;background:var(--surface);border-left:1px solid var(--hairline);box-shadow:-12px 0 32px #00000059;display:flex;flex-direction:column;overflow:hidden}.help-head{display:flex;align-items:center;justify-content:space-between;padding:14px 16px;border-bottom:1px solid var(--hairline);flex:none}.help-head h2{font-size:16px;font-weight:600;margin:0}.help-close{width:30px;height:30px;border-radius:8px;border:1px solid var(--hairline);background:var(--elevated);color:var(--text-2);font-size:13px}.help-body{overflow-y:auto;padding:4px 16px 24px;scrollbar-width:thin}.help-section{padding:16px 0;border-bottom:1px solid var(--hairline)}.help-section:last-child{border-bottom:none}.help-section h3{font-size:13px;font-weight:600;letter-spacing:.02em;margin:0 0 8px;color:var(--text)}.help-section ul{margin:0;padding-left:18px;display:flex;flex-direction:column;gap:6px}.help-section li{font-size:13.5px;line-height:1.5;color:var(--text-2)}.help-shortcuts{width:100%;border-collapse:collapse;font-size:13.5px}.help-shortcuts td{padding:4px 0;color:var(--text-2)}.help-shortcuts td:first-child{width:64px;padding-right:10px}.help-glossary{margin:0;display:flex;flex-direction:column;gap:10px}.help-glossary-row dt{font-size:13.5px;font-weight:600;color:var(--text)}.help-glossary-row dd{margin:2px 0 0;font-size:13px;line-height:1.5;color:var(--text-2)}main{display:flex;flex-direction:column;gap:14px}.controls{display:flex;flex-direction:column;gap:10px}.keys{display:flex;gap:6px;flex-wrap:wrap}.key{min-width:44px;height:36px;padding:0 10px;border-radius:10px;border:1px solid var(--hairline);background:var(--elevated);font-size:13.5px;font-weight:500;font-variant-numeric:tabular-nums}.key.on{background:var(--tint);border-color:var(--tint);color:#0e1116;font-weight:600}.row{display:flex;gap:10px;flex-wrap:wrap}.seg{display:inline-flex;border:1px solid var(--hairline);border-radius:10px;overflow:hidden;background:var(--surface)}.seg button{padding:7px 12px;font-size:13px;color:var(--text-2);border-right:1px solid var(--hairline)}.seg button:last-child{border-right:none}.seg button.on{background:var(--elevated);color:var(--text);font-weight:600}.undo-redo{height:34px}.undo-redo button{width:36px;font-size:16px;line-height:1}.undo-redo button:disabled{opacity:.35;cursor:default}.rail{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.chip{display:inline-flex;align-items:center;background:var(--elevated);border:1px solid var(--hairline);border-radius:999px;overflow:visible}.chip.active{border-color:var(--tint)}.chip .picker{display:inline-flex}.chip-body{display:inline-flex;align-items:center;gap:7px;padding:6px 4px 6px 10px;font-size:13px;font-weight:500;border-radius:999px 0 0 999px;max-width:220px}.chip-label{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.chip-remove{padding:6px 10px 6px 6px;font-size:11px;color:var(--text-2);border-radius:0 999px 999px 0}.chip-remove:hover{color:var(--text)}.chip-add{padding:6px 12px;font-size:13px;color:var(--text-2);border:1px dashed var(--hairline);border-radius:999px}.chip-add:disabled{opacity:.4;cursor:default}.swatch{width:11px;height:11px;flex:none;display:inline-block}.sw-0{background:var(--scale-a)}.sw-1{background:var(--scale-b)}.sw-2{background:var(--scale-c)}.sw-circle{border-radius:50%}.sw-square{border-radius:2.5px}.sw-diamond{clip-path:polygon(50% 0,100% 50%,50% 100%,0 50%)}.view-toggle{margin-left:auto}.stack{display:flex;flex-direction:column;gap:18px;margin-top:12px}.stack-title{display:flex;align-items:center;gap:9px;font-size:16px;font-weight:600;letter-spacing:-.01em;margin:0 0 6px}.legend-line{font-size:12px;color:var(--text-2);padding:4px 0 0 4px}.picker{position:relative}.picker-button{display:inline-flex;align-items:center;gap:8px;padding:7px 12px;font-size:13px;font-weight:600;border:1px solid var(--hairline);border-radius:10px;background:var(--elevated)}.picker-button .chev{color:var(--text-2);font-size:10px}.picker-panel{position:absolute;z-index:20;top:calc(100% + 6px);left:0;width:min(264px,calc(100vw - 32px));max-height:min(65vh,440px);background:var(--surface);border:1px solid var(--hairline);border-radius:14px;box-shadow:0 12px 32px #00000059;display:flex;flex-direction:column;overflow:hidden}.picker-search{display:flex;align-items:center;gap:6px;padding:0 10px;height:36px;flex:none;border-bottom:1px solid var(--hairline)}.picker-search:focus-within{border-bottom-color:var(--tint)}.picker-search .magnifier{color:var(--text-2);font-size:15px}.picker-search input{flex:1;min-width:0;background:none;border:none;outline:none;color:var(--text);font:inherit;font-size:13px}.picker-search input::placeholder{color:var(--text-2)}.picker-search .clear{color:var(--text-2);font-size:11px;width:18px;height:18px;border-radius:50%;background:var(--elevated);display:flex;align-items:center;justify-content:center;flex:none}.picker-scroll{overflow-y:auto;scrollbar-width:thin;padding:4px 8px 8px;padding-bottom:calc(8px + env(safe-area-inset-bottom))}.picker-group-title{position:sticky;top:0;z-index:1;background:var(--surface);font-size:11px;font-weight:600;letter-spacing:.07em;text-transform:uppercase;color:var(--text-2);padding:8px 10px 4px}.picker-item{display:flex;align-items:center;justify-content:space-between;gap:8px;width:100%;text-align:left;padding:0 10px;min-height:30px;border-radius:8px;font-size:13px;color:var(--text)}.picker-item.hl{background:var(--elevated)}.picker-item.on{background:var(--tint);color:#0e1116;font-weight:600}.picker-item .check{color:currentColor;font-weight:700}.picker-empty{text-align:center;color:var(--text-2);font-size:13px;padding:16px 0}.visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}@media(pointer:coarse){.picker-item{min-height:44px}.picker-search{height:44px}.picker-search input{font-size:16px}}.chart-title{font-size:17px;font-weight:600;letter-spacing:-.01em;margin:12px 0 0}.hints{display:flex;gap:18px;align-items:baseline;flex-wrap:wrap;color:var(--text-2);font-size:12.5px}.shortcuts{display:flex;gap:14px;flex-wrap:wrap}kbd{font-family:inherit;background:var(--elevated);border:1px solid var(--hairline);border-radius:5px;padding:1px 6px;font-size:11px}.site-footer{margin-top:8px;padding-top:14px;border-top:1px solid var(--hairline);color:var(--text-2);font-size:12px;text-align:center}.site-footer-family{margin-top:6px}.site-footer a{color:var(--text-2);text-decoration:none}.site-footer a:hover{color:var(--text);text-decoration:underline;text-underline-offset:2px}.wisdom-trigger{background:none;border:none;padding:0;font:inherit;font-size:12px;color:var(--text-2);text-decoration:none;cursor:pointer}.wisdom-trigger:hover{color:var(--text);text-decoration:underline;text-underline-offset:2px}.wisdom-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;z-index:40;background:#0000008c;display:flex;align-items:center;justify-content:center;padding:20px}.wisdom-panel{position:relative;width:min(360px,100%);background:var(--surface);border:1px solid var(--hairline);border-radius:16px;box-shadow:0 24px 64px #00000073;padding:32px 24px 24px;text-align:center}.wisdom-panel .help-close{position:absolute;top:12px;right:12px}.wisdom-photo{width:120px;height:120px;border-radius:50%;object-fit:cover;display:block;margin:0 auto 18px;border:2px solid var(--hairline)}.wisdom-quote{margin:0;font-size:17px;font-weight:600;line-height:1.4;color:var(--text)}.wisdom-attribution{display:block;margin-top:10px;font-size:13px;font-weight:400;color:var(--text-2)}.wisdom-attribution a{color:var(--text-2);text-decoration:none}.wisdom-attribution a:hover{color:var(--text);text-decoration:underline;text-underline-offset:2px}.print-brand{display:none}@media(max-width:640px){.app{padding:12px 12px 32px}}:root{--bg: #0e1116;--surface: #161b22;--elevated: #1d242e;--hairline: rgba(255, 255, 255, .09);--text: #f2f4f7;--text-2: #9aa3af;--tint: #4ca3dd;--note: #3e5a78;--note-label: #f2f4f7;--root: #e05545;--degree: #9aa3af;--bracket: #6b8fc7;--grid: rgba(255, 255, 255, .16);--nut: rgba(255, 255, 255, .55);--fretline: rgba(255, 255, 255, .1);--marker: rgba(255, 255, 255, .28);--scale-a: #4ca3dd;--scale-b: #e69f00;--scale-c: #d98bb5;--scale-a-label: #0e1116;--scale-b-label: #0e1116;--scale-c-label: #0e1116;--shared-a: #4ca3dd;--shared-b: #e69f00;--shared-c: #d98bb5;--shared-label: #0e1116;--shared-ring: rgba(255, 255, 255, .55);--ghost: rgba(255, 255, 255, .35);--white-key: #e8ebef;--black-key: #22272e;--key-border: rgba(0, 0, 0, .55)}:root[data-theme=light]{--bg: #f5f6f8;--surface: #ffffff;--elevated: #ffffff;--hairline: rgba(15, 23, 32, .1);--text: #1b2026;--text-2: #5b6572;--tint: #0072b2;--note: #2c3e50;--note-label: #ffffff;--root: #c0392b;--degree: #7a7a7a;--bracket: #4a6fa5;--grid: #8a8a8a;--nut: #6f6f6f;--fretline: rgba(15, 23, 32, .18);--marker: rgba(15, 23, 32, .3);--scale-a: #0072b2;--scale-b: #e69f00;--scale-c: #cc79a7;--scale-a-label: #ffffff;--scale-b-label: #1b2026;--scale-c-label: #1b2026;--shared-a: #4ca3dd;--shared-b: #e69f00;--shared-c: #d98bb5;--shared-label: #0e1116;--shared-ring: rgba(15, 23, 32, .45);--ghost: rgba(15, 23, 32, .3);--white-key: #ffffff;--black-key: #2b3138;--key-border: rgba(15, 23, 32, .35)}*{box-sizing:border-box}html,body{margin:0}body{background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,SF Pro Text,Segoe UI,Roboto,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased}button{font:inherit;color:inherit;background:none;border:none;padding:0;cursor:pointer}:focus-visible{outline:2px solid var(--tint);outline-offset:2px;border-radius:4px}@media(prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}@media print{:root{--bg: #ffffff;--text: #1a1a1a;--text-2: #666666;--note: #2c3e50;--note-label: #ffffff;--root: #c0392b;--degree: #7a7a7a;--bracket: #4a6fa5;--grid: #8a8a8a;--nut: #6f6f6f;--fretline: #c9c9c9;--marker: #8a8a8a;--hairline: transparent;--scale-a: #0072b2;--scale-b: #e69f00;--scale-c: #cc79a7;--scale-a-label: #ffffff;--scale-b-label: #1b2026;--scale-c-label: #1b2026;--shared-a: #4ca3dd;--shared-b: #e69f00;--shared-c: #d98bb5;--shared-label: #0e1116;--shared-ring: rgba(15, 23, 32, .45);--ghost: rgba(15, 23, 32, .3);--white-key: #ffffff;--black-key: #2b3138;--key-border: rgba(15, 23, 32, .35)}.no-print{display:none!important}.neck-scroll{overflow:visible!important}.neck-scroll svg{min-width:0!important;width:100%!important}.print-brand{display:flex!important;align-items:center;gap:8px;margin-bottom:14px;padding-bottom:10px;border-bottom:1px solid var(--fretline)}.print-brand-name{font-size:15px;font-weight:600;letter-spacing:-.01em;color:var(--text)}.print-brand-tagline{font-size:10.5px;color:var(--text-2)}}