:root{--bg: #F4F1EA;--surface: #FBFAF7;--surface-sunken: #ECE7DC;--line: #DDD6C7;--line-strong: #C9BFA9;--ink: #2B2724;--ink-soft: #57504A;--ink-muted: #8A8177;--clay: #C96442;--clay-strong: #B3532F;--clay-tint: #EFD9CE;--font-display: "Fraunces", Georgia, serif;--font-ui: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;--radius-s: 6px;--radius-m: 10px;--radius-l: 16px;--space-1: 4px;--space-2: 8px;--space-3: 12px;--space-4: 16px;--space-5: 24px;--space-6: 32px;--space-7: 48px;--shadow-panel: 0 1px 2px rgba(43, 39, 36, .06), 0 8px 24px rgba(43, 39, 36, .08);--focus-ring: 0 0 0 3px rgba(201, 100, 66, .35)}*{box-sizing:border-box}html,body{margin:0;padding:0}body{background:var(--bg);color:var(--ink);font-family:var(--font-ui);font-size:15px;line-height:1.5;-webkit-font-smoothing:antialiased}h1,h2,h3{font-family:var(--font-display);font-weight:600;margin:0;color:var(--ink)}button,select,input{font-family:inherit;font-size:inherit;color:inherit}button,select{cursor:pointer}button:focus-visible,select:focus-visible,input:focus-visible,[tabindex]:focus-visible{outline:none;box-shadow:var(--focus-ring);border-radius:var(--radius-s)}@media(prefers-reduced-motion:reduce){*{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}}.visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}.app-header{display:flex;align-items:center;justify-content:space-between;gap:var(--space-4);padding:var(--space-4) var(--space-6);flex-wrap:wrap}.app-header__title h1{font-size:22px;letter-spacing:.01em}.app-header__controls{display:flex;align-items:center;gap:var(--space-3)}.mode-switch{display:inline-flex;background:var(--surface-sunken);border-radius:var(--radius-m);padding:3px;gap:2px}.mode-switch__btn{border:none;background:transparent;color:var(--ink-soft);font-weight:600;font-size:13.5px;padding:7px 16px;border-radius:8px;transition:background .15s ease,color .15s ease}.mode-switch__btn.is-active{background:var(--ink);color:var(--surface)}.mode-switch__btn:not(.is-active):hover{background:#2b27240f}.icon-btn{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:var(--radius-m);border:1px solid var(--line);background:var(--surface);color:var(--ink-soft);transition:border-color .15s ease,color .15s ease}.icon-btn:hover{border-color:var(--line-strong);color:var(--ink)}@media(max-width:640px){.app-header{justify-content:center}}.field{display:flex;flex-direction:column;gap:5px}.field__label{font-size:11.5px;font-weight:600;color:var(--ink-muted);letter-spacing:.01em}.field__select{appearance:none;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-s);padding:8px 30px 8px 12px;font-weight:500;color:var(--ink);background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='10' height='6'><path d='M0 0L5 6L10 0Z' fill='%238A8177'/></svg>");background-repeat:no-repeat;background-position:right 12px center;min-width:148px;transition:border-color .15s ease}.field__select:hover{border-color:var(--line-strong)}.segmented{display:inline-flex;background:var(--surface-sunken);border-radius:var(--radius-s);padding:3px;gap:2px}.segmented__btn{border:none;background:transparent;color:var(--ink-soft);font-weight:600;font-size:12.5px;padding:6px 12px;border-radius:5px;white-space:nowrap;transition:background .15s ease,color .15s ease}.segmented__btn.is-active{background:var(--surface);color:var(--clay-strong);box-shadow:0 1px 2px #2b27241f}.segmented__btn:not(.is-active):hover{color:var(--ink)}.control-bar{display:flex;align-items:flex-end;flex-wrap:wrap;gap:var(--space-4) var(--space-5);padding:var(--space-4) var(--space-6);background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.voicing-nav{display:inline-flex;align-items:center;gap:var(--space-2);background:var(--surface-sunken);border-radius:var(--radius-s);padding:4px 10px;height:34px}.voicing-nav__btn{border:none;background:transparent;font-size:16px;color:var(--ink);width:20px;line-height:1}.voicing-nav__btn:disabled{color:var(--line-strong);cursor:default}.voicing-nav__label{font-size:12.5px;font-weight:600;color:var(--ink-soft);min-width:44px;text-align:center}.detective-status{display:flex;align-items:center;gap:var(--space-3);font-size:13.5px;color:var(--ink-soft)}.text-btn{border:none;background:transparent;color:var(--clay-strong);font-weight:600;font-size:13px;padding:0}.text-btn:hover{text-decoration:underline}@media(max-width:640px){.control-bar{justify-content:center}}.fretboard-svg{width:100%;height:auto;display:block;overflow:visible}.fretboard-string-label{font-family:var(--font-ui);font-size:13px;font-weight:600;fill:var(--ink-soft)}.fretboard-fret-label{font-family:var(--font-ui);font-size:12px;fill:var(--ink-muted)}.fretboard-marker-label{font-family:var(--font-ui);font-size:12px;font-weight:700;pointer-events:none}.legend{display:flex;flex-direction:column;gap:var(--space-2);padding:var(--space-4) var(--space-6)}.legend__row{display:flex;flex-wrap:wrap;gap:var(--space-2) var(--space-5)}.legend__row--shapes{padding-top:var(--space-2);border-top:1px solid var(--line)}.legend__item{display:flex;align-items:center;gap:7px;font-size:12.5px;color:var(--ink-soft);font-weight:500}.legend-swatch{width:13px;height:13px;display:inline-block;flex-shrink:0}.legend-swatch--circle{border-radius:50%}.legend-swatch--square{border-radius:3px}.legend-swatch--diamond{transform:rotate(45deg);border-radius:2px}.chord-diagram{margin:0 var(--space-6) var(--space-6);padding:var(--space-4) var(--space-5);background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-m);display:flex;align-items:center;gap:var(--space-5);flex-wrap:wrap}.chord-diagram--empty{display:block;color:var(--ink-muted);font-size:13.5px}.chord-diagram__header{display:flex;flex-direction:column;gap:var(--space-2);min-width:140px}.chord-diagram__header h3{font-size:16px;font-weight:600}.chord-diagram__nav{display:flex;align-items:center;gap:var(--space-2);font-size:12px;color:var(--ink-soft);font-weight:600}.chord-diagram__nav button{border:1px solid var(--line);background:var(--surface);border-radius:var(--radius-s);width:24px;height:24px;line-height:1;color:var(--ink)}.chord-diagram__nav button:disabled{color:var(--line-strong);border-color:var(--line);cursor:default}.chord-diagram__svg{width:150px;height:178px;flex-shrink:0}.chord-diagram__fret-num{font-family:var(--font-ui);font-size:11px;fill:var(--ink-soft)}.chord-diagram__mute{font-family:var(--font-ui);font-size:13px;font-weight:700;fill:var(--ink-muted);text-anchor:middle}.chord-diagram__note-label{font-family:var(--font-ui);font-size:10.5px;font-weight:700}.detective-panel{display:flex;gap:var(--space-6);padding:var(--space-2) var(--space-6) var(--space-6);flex-wrap:wrap}.detective-panel--empty{color:var(--ink-muted);font-size:13.5px;max-width:420px}.detective-panel__col{flex:1;min-width:220px}.detective-panel__col h3{font-size:13px;text-transform:none;color:var(--ink-soft);margin-bottom:var(--space-2);font-family:var(--font-ui);font-weight:700}.detective-panel__empty{font-size:12.5px;color:var(--ink-muted)}.detective-panel__col ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:2px}.detective-panel__col button{width:100%;text-align:left;border:none;background:transparent;padding:6px 8px;border-radius:var(--radius-s);font-size:13.5px;color:var(--ink)}.detective-panel__col button:hover{background:var(--surface-sunken);color:var(--clay-strong)}.settings-overlay{position:fixed;inset:0;background:#2b272459;display:flex;justify-content:flex-end;z-index:50}.settings-panel{width:340px;max-width:90vw;height:100%;background:var(--bg);box-shadow:var(--shadow-panel);overflow-y:auto;padding:var(--space-5) var(--space-5) var(--space-7);display:flex;flex-direction:column;gap:var(--space-5)}.settings-panel__header{display:flex;align-items:center;justify-content:space-between;position:sticky;top:0}.settings-panel__header h2{font-size:19px}.settings-section h3{font-family:var(--font-ui);font-size:12px;font-weight:700;color:var(--ink-muted);margin-bottom:var(--space-2);letter-spacing:.01em}.settings-select{width:100%;appearance:none;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-s);padding:9px 30px 9px 12px;font-weight:500;background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='10' height='6'><path d='M0 0L5 6L10 0Z' fill='%238A8177'/></svg>");background-repeat:no-repeat;background-position:right 12px center}.settings-select--inline{width:auto;min-width:140px;padding:6px 26px 6px 10px}.settings-subrow{display:flex;align-items:center;justify-content:space-between;margin-top:var(--space-2);font-size:13.5px;color:var(--ink-soft)}.custom-tuning{margin-top:var(--space-3);display:flex;flex-direction:column;gap:var(--space-2)}.custom-tuning__row{display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--ink-soft)}.custom-tuning__row select{border:1px solid var(--line);border-radius:var(--radius-s);padding:5px 8px;background:var(--surface)}.chip-row{display:flex;flex-wrap:wrap;gap:var(--space-2)}.chip{border:1px solid var(--line);background:var(--surface);border-radius:999px;padding:6px 14px;font-size:12.5px;font-weight:600;color:var(--ink-soft)}.chip.is-active{background:var(--clay);border-color:var(--clay);color:#fff}.wood-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--space-2)}.wood-swatch{height:52px;border-radius:var(--radius-s);border:2px solid transparent;position:relative;display:flex;align-items:flex-end;padding:5px 7px}.wood-swatch span{font-size:11.5px;font-weight:700;color:#fff;text-shadow:0 1px 3px rgba(0,0,0,.55)}.wood-swatch.is-active{border-color:var(--clay)}.app{max-width:1180px;margin:0 auto;padding-bottom:var(--space-7)}.app__board-wrap{padding:var(--space-6)}@media(max-width:640px){.app__board-wrap{padding:var(--space-4)}}.neck-scroll{overflow-x:auto;padding:6px 0}.fretboard-svg{min-width:1000px}.board-caption{color:var(--ink-muted);font-size:12px;margin:8px 0 0}.voicing-detail{color:var(--ink-soft);font-size:12px;text-align:center}.detective-panel small{font-size:11px;color:var(--ink-muted)}.settings-panel{overflow-y:auto}.fretboard-svg [role=button]:focus{outline:2px solid var(--clay);outline-offset:3px}@media(max-width:640px){.app-header{padding:20px 16px}.control-bar{padding:16px;justify-content:flex-start;gap:16px}.field{max-width:100%}.field__select{max-width:100%;min-width:120px}.segmented__btn{padding:7px 9px}}