:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;color:#0f172a;--ink:#0f172a;--muted:#64748b;--line:#e2e8f0;--panel:#f8fafc;--paper:#fff;--active:#0b4171;--active-soft:#eaf2f8;--coral:#3b82f6;--coral-soft:#eff6ff;--danger:#dc4c4c;--gold:#d48a0c;--blue:#2563eb;--success:#0f9f76;--surface:#fff;--surface-soft:#f1f5f9;--app-bg:#f8fafc;--shadow-sm:0 1px 3px #0f172a0d;--shadow:0 1px 3px #0f172a0d, 0 18px 48px #0f172a12;--fret-string-line:color-mix(in srgb, var(--ink) 54%, var(--line));--scale-cell-fill:color-mix(in srgb, var(--blue) 9%, transparent);--scale-cell-border:transparent;--scale-marker-bg:color-mix(in srgb, var(--paper) 94%, var(--surface));--scale-marker-border:color-mix(in srgb, var(--active) 62%, var(--line));--scale-marker-degree-bg:var(--active-soft);--scale-marker-degree-text:var(--active);--string-label-width:44px;--tab-column-width:64px;--radius-sm:10px;--radius-md:16px;--radius-lg:24px;--ease-out:cubic-bezier(.23, 1, .32, 1);--ease-in-out:cubic-bezier(.77, 0, .175, 1);--ease-drawer:cubic-bezier(.32, .72, 0, 1);--focus-ring:0 0 0 4px color-mix(in srgb, var(--active) 17%, transparent);background:#f8fafc;font-family:SUIT Variable,Pretendard Variable,Pretendard,Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}.public-shell{min-height:100vh;padding-bottom:calc(80px + var(--safe-area-inset-bottom,env(safe-area-inset-bottom)));background:radial-gradient(circle at 78% -8%, color-mix(in srgb, var(--active) 10%, transparent), transparent 38rem), linear-gradient(180deg, color-mix(in srgb, var(--surface) 34%, transparent), transparent 680px), var(--app-bg)}.app-global-header{z-index:100;min-height:66px;padding:calc(9px + var(--safe-area-inset-top,env(safe-area-inset-top))) max(20px, calc((100vw - 1440px) / 2)) 9px;border-bottom:1px solid color-mix(in srgb, var(--line) 72%, transparent);background:color-mix(in srgb, var(--app-bg) 94%, transparent);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);grid-template-columns:minmax(190px,1fr) auto minmax(190px,1fr);align-items:center;gap:18px;display:grid;position:sticky;top:0}.app-global-brand{min-width:0;min-height:42px;color:var(--ink);text-align:left;background:0 0;border:0;justify-self:start;align-items:center;gap:10px;padding:0;display:inline-flex}.app-global-brand img{flex:none;width:38px;height:38px}.app-global-brand strong{letter-spacing:-.035em;text-overflow:ellipsis;white-space:nowrap;font-size:.92rem;overflow:hidden}.app-global-nav{border:1px solid var(--line);background:color-mix(in srgb, var(--surface) 85%, transparent);box-shadow:0 8px 24px color-mix(in srgb, var(--ink) 5%, transparent);border-radius:14px;align-items:center;gap:4px;padding:4px;display:flex}.app-global-nav button,.app-settings-trigger{min-height:38px;color:var(--muted);background:0 0;border:0;border-radius:10px;justify-content:center;align-items:center;gap:7px;padding:0 12px;font-size:.82rem;font-weight:850;display:inline-flex}.app-global-nav button.active{background:var(--active);color:#fff;box-shadow:0 5px 14px color-mix(in srgb, var(--active) 24%, transparent)}.app-global-actions{justify-self:end;align-items:center;gap:10px;min-width:0;display:flex}.app-global-status{color:var(--muted);white-space:nowrap;font-size:.76rem;font-weight:850}.app-settings-menu{position:relative}.app-settings-trigger{border:1px solid var(--line);background:var(--surface);color:var(--ink);transition:transform .14s var(--ease-out), border-color .14s ease, color .14s ease;gap:6px;padding:0 10px}.app-settings-trigger:active{transform:scale(.97)}.app-settings-trigger>svg:last-child{transition:transform .16s var(--ease-out)}.app-settings-trigger>svg:last-child.is-open{transform:rotate(180deg)}.app-settings-popover{z-index:120;border:1px solid var(--line);background:color-mix(in srgb, var(--surface) 98%, transparent);width:min(300px,100vw - 24px);box-shadow:0 18px 48px color-mix(in srgb, var(--ink) 18%, transparent);transform-origin:100% 0;transition:opacity .16s var(--ease-out), transform .16s var(--ease-out);border-radius:14px;gap:4px;padding:8px;display:grid;position:absolute;top:calc(100% + 8px);right:0}@starting-style{.app-settings-popover{opacity:0;transform:scale(.97)translateY(-4px)}}.app-settings-heading{gap:2px;padding:8px 10px 10px;display:grid}.app-settings-subheading{grid-template-columns:36px minmax(0,1fr);align-items:center;gap:6px;padding:6px 6px 10px;display:grid}.app-settings-subheading>div{gap:2px;display:grid}.app-settings-subheading small{color:var(--muted);font-size:.7rem;font-weight:700}.app-settings-subheading strong{color:var(--ink);font-size:.86rem;font-weight:850}.app-settings-back{width:36px;height:36px;color:var(--ink);transition:transform .14s var(--ease-out), background-color .14s ease;background:0 0;border:0;border-radius:9px;place-items:center;padding:0;display:grid}.app-settings-back:active{transform:scale(.96)}.app-settings-heading small,.app-settings-item small{color:var(--muted);font-size:.7rem;font-weight:700}.app-settings-heading strong,.app-settings-item strong{color:var(--ink);font-size:.82rem;font-weight:850}.app-settings-item{width:100%;min-height:50px;color:var(--ink);text-align:left;transition:transform .14s var(--ease-out), background-color .14s ease;background:0 0;border:0;border-radius:9px;grid-template-columns:20px minmax(0,1fr) auto;align-items:center;gap:10px;padding:8px 10px;display:grid}.app-settings-item:active{transform:scale(.98)}.app-settings-item>span{gap:2px;display:grid}.app-settings-item>b{color:var(--active);font-size:.72rem}.app-settings-item.is-danger,.app-settings-item.is-danger strong{color:var(--danger)}.app-settings-divider{background:var(--line);height:1px;margin:4px 6px}.analytics-preferences{right:18px;bottom:calc(18px + var(--safe-area-inset-bottom,env(safe-area-inset-bottom)));z-index:1200;border:1px solid color-mix(in srgb, var(--line) 88%, transparent);background:color-mix(in srgb, var(--surface) 98%, transparent);width:min(520px,100% - 36px);max-height:calc(100dvh - 36px);box-shadow:0 24px 64px color-mix(in srgb, var(--ink) 18%, transparent);opacity:1;-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);transition:opacity .18s ease, transform .22s var(--ease-out);border-radius:18px;gap:18px;padding:22px;display:grid;position:fixed;overflow-y:auto;transform:translateY(0)}@starting-style{.analytics-preferences{opacity:0;transform:translateY(16px)}}.analytics-preferences-copy{gap:9px;display:grid}.analytics-preferences-copy>strong,.analytics-preferences-copy>p{margin:0}.analytics-preferences-copy>strong{color:var(--ink);letter-spacing:-.02em;font-size:1.08rem}.analytics-preferences-copy>p:not(.analytics-preferences-kicker){color:var(--muted);font-size:.8rem;font-weight:560;line-height:1.55}.analytics-preferences-options{gap:8px;margin-top:5px;display:grid}.analytics-preferences-option{border:1px solid var(--line);min-height:48px;color:var(--ink);background:var(--surface);cursor:pointer;transition:border-color .14s ease, background-color .14s ease, transform .14s var(--ease-out);border-radius:12px;align-items:center;gap:11px;padding:11px 13px;font-size:.84rem;font-weight:800;display:flex}.analytics-preferences-option:has(input:checked){border-color:color-mix(in srgb, var(--active) 70%, var(--line));background:color-mix(in srgb, var(--active) 7%, var(--surface))}.analytics-preferences-option:active{transform:scale(.99)}.analytics-preferences-option input{width:20px;height:20px;accent-color:var(--active);flex:none;margin:0}.analytics-preferences-copy .analytics-preferences-privacy{margin-top:3px}.analytics-preferences-copy a{width:fit-content;color:var(--blue);text-underline-offset:2px;font-size:.74rem;font-weight:800;text-decoration:underline}.analytics-preferences-actions{justify-content:flex-end;gap:8px;display:flex}.analytics-preferences-actions button{border:1px solid var(--active);background:var(--active);color:#fff;white-space:nowrap;min-height:40px;transition:transform .14s var(--ease-out), border-color .14s ease, background-color .14s ease;border-radius:10px;padding:0 14px;font-size:.76rem;font-weight:850}.analytics-preferences-actions button:active{transform:scale(.97)}.analytics-preferences-actions .analytics-preferences-secondary{border-color:var(--line);background:var(--surface);color:var(--ink)}.analytics-preferences-actions button:disabled{cursor:wait;opacity:.65}.public-eyebrow{color:var(--active);letter-spacing:.12em;margin:0 0 10px;font-size:.72rem;font-weight:950}.song-practice-title h1{letter-spacing:-.065em;text-wrap:balance;max-width:820px;margin:0;font-size:clamp(2.75rem,7vw,5.9rem);line-height:.95}.library-content,.song-tab-stage{width:min(1180px,100% - 40px);margin:0 auto}.song-library-content{margin-top:clamp(24px,5vw,64px)}.library-content,.song-tab-stage{border-radius:var(--radius-lg);background:color-mix(in srgb, var(--paper) 92%, transparent);box-shadow:0 24px 70px color-mix(in srgb, var(--ink) 7%, transparent);border:0;padding:clamp(24px,4vw,48px)}.library-section-heading,.tab-stage-heading{justify-content:space-between;align-items:end;gap:24px;margin-bottom:28px;display:flex}.library-section-heading h1,.tab-stage-heading h2{letter-spacing:-.045em;margin:0;font-size:clamp(1.7rem,3vw,2.5rem)}.song-search{border:1px solid var(--line);background:var(--surface);border-radius:14px;grid-template-columns:auto minmax(0,1fr);align-items:center;gap:9px;width:min(360px,100%);min-height:46px;padding:0 14px;display:flex}.song-search:focus-within{border-color:var(--active);box-shadow:var(--focus-ring)}.song-search input{min-height:42px;box-shadow:none;background:0 0;border:0;padding:0}.song-card-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;display:grid}.auth-checking-shell{overflow:hidden}.auth-checking-header button:disabled{cursor:default;opacity:1}.auth-checking-content{min-height:470px}.auth-skeleton{background:color-mix(in srgb, var(--line) 72%, var(--surface));position:relative;overflow:hidden}.auth-skeleton:after{content:"";background:linear-gradient(100deg, transparent 20%, color-mix(in srgb, var(--surface) 75%, transparent) 48%, transparent 76%);animation:1.25s ease-in-out infinite auth-skeleton-shimmer;position:absolute;inset:0;transform:translate(-100%)}.auth-skeleton-search{border-radius:14px;width:min(360px,44vw);height:46px}.auth-skeleton-card{min-height:305px;padding:14px}.auth-skeleton-art{aspect-ratio:16/9;border-radius:12px}.auth-skeleton-copy{gap:12px;padding:22px 5px 8px;display:grid}.auth-skeleton-title{border-radius:7px;width:72%;height:22px}.auth-skeleton-line{border-radius:6px;width:46%;height:14px}@keyframes auth-skeleton-shimmer{to{transform:translate(100%)}}.song-card{border:1px solid var(--line);border-radius:var(--radius-md);background:var(--surface);min-width:0;transition:transform .2s var(--ease-out), box-shadow .2s var(--ease-out), border-color .18s ease;overflow:hidden}.song-card-open{width:100%;min-height:330px;color:var(--ink);text-align:left;background:0 0;border:0;padding:14px;display:grid}.song-card-art{aspect-ratio:16/9;background:radial-gradient(circle at 82% 12%, color-mix(in srgb, var(--gold) 24%, transparent), transparent 38%), linear-gradient(145deg, #0b4171, #062b4b);color:#fff;border-radius:12px;place-items:stretch stretch;min-height:0;padding:18px;display:grid;position:relative;overflow:hidden}.song-card-art.has-thumbnail{padding:0}.song-card-art.has-thumbnail:after{content:"";z-index:1;pointer-events:none;background:linear-gradient(#0000 52%,#020b16a3);position:absolute;inset:0}.song-card-art.has-thumbnail .six-line-route{padding:18px}.song-card-art-thumbnail{object-fit:cover;object-position:center;width:100%;height:100%;position:absolute;inset:0}.song-card-key{z-index:2;letter-spacing:-.08em;opacity:.92;text-shadow:0 2px 12px #020b1680;font-size:2.35rem;font-weight:950;position:absolute;bottom:10px;right:14px}.six-line-route{align-content:center;min-width:0;display:grid;position:relative}.six-line-route svg{width:100%;height:92px}.six-line-route .route-strings{fill:none;stroke:#ffffff80;stroke-width:1.5px}.six-line-route .route-column{fill:none;stroke:#ffffff2e;stroke-width:13px}.six-line-route .route-path{fill:none;stroke:var(--coral);stroke-width:3.5px;stroke-linecap:round}.six-line-route .route-node{fill:var(--coral);stroke:#062b4b;stroke-width:3px}.six-line-route strong{color:#ffffffd6;letter-spacing:-.01em;font-size:.68rem;position:absolute;bottom:0;left:4px}.song-card-copy{padding:18px 7px 8px}.song-card-meta{color:var(--active);font-size:.73rem;font-weight:900}.song-card h3{letter-spacing:-.03em;margin:8px 0 5px;font-size:1.25rem}.song-card p{color:var(--muted);margin:0;font-size:.86rem}.song-card-stats{flex-wrap:wrap;gap:6px;margin-top:14px;display:flex}.song-card-stats span{background:var(--surface-soft);color:var(--muted);border-radius:8px;padding:5px 8px;font-size:.7rem;font-weight:800}.song-card-arrow{border-top:1px solid var(--line);color:var(--active);justify-content:space-between;align-self:end;align-items:center;padding:13px 8px 4px;font-size:.84rem;font-weight:900;display:flex}.song-actions a,.song-actions button,.tab-stage-heading button{background:var(--active);color:#fff;border:1px solid #0000;border-radius:12px;justify-content:center;align-items:center;gap:8px;min-height:44px;padding:0 15px;font-size:.84rem;font-weight:900;text-decoration:none;display:inline-flex}.ad-label{border:1px solid var(--line);width:fit-content;min-width:26px;height:18px;color:var(--muted);border-radius:999px;place-items:center;margin-bottom:6px;font-size:.58rem;font-weight:900;display:inline-grid}.song-practice-header{width:min(1180px,100% - 40px);margin:0 auto;padding:42px 0 24px}.back-link{min-height:38px;color:var(--muted);background:0 0;border:0;align-items:center;gap:5px;padding:0 10px 0 4px;font-weight:850;display:inline-flex}.song-practice-title{justify-content:space-between;align-items:end;gap:28px;padding:34px 0;display:flex}.song-practice-title h1{font-size:clamp(2.3rem,6vw,5rem)}.song-practice-title p:last-child{color:var(--muted);margin:12px 0 0}.song-actions{flex-wrap:wrap;justify-content:flex-end;gap:8px;display:flex}.version-safety{max-width:320px;color:var(--muted);text-align:right;flex-basis:100%;margin-left:auto;font-size:.72rem;font-weight:750;line-height:1.4}.song-actions a{border-color:var(--line);background:var(--surface);color:var(--ink)}.song-control-deck{border:1px solid var(--line);background:color-mix(in srgb, var(--surface) 92%, transparent);box-shadow:0 16px 48px color-mix(in srgb, var(--ink) 6%, transparent);border-radius:20px;grid-template-columns:minmax(200px,1fr) minmax(280px,1fr) minmax(180px,.7fr);gap:12px;padding:16px;display:grid}.song-control-deck>label,.key-control,.display-toggles{align-content:start;gap:8px;min-width:0;padding:6px;display:grid}.song-control-deck>label>span,.key-control>span,.display-toggles>span{color:var(--muted);font-size:.72rem;font-weight:900}.key-control>div,.display-toggles>div{align-items:center;gap:5px;display:flex}.key-control button,.display-toggles button{border:1px solid var(--line);background:var(--surface);min-width:42px;min-height:42px;color:var(--ink);border-radius:11px;place-items:center;font-weight:850;display:inline-grid}.key-control select{text-align:center;min-width:78px;min-height:42px;font-weight:900}.key-control .key-reset{white-space:nowrap;gap:5px;width:auto;padding:0 10px;display:inline-flex}.display-toggles button{padding:0 12px}.display-toggles button.active{border-color:var(--active);background:var(--active-soft);color:var(--active)}.song-control-summary{border-top:1px solid var(--line);flex-wrap:wrap;grid-column:1/-1;gap:8px;padding:10px 6px 0;display:flex}.song-control-summary span{background:var(--surface-soft);color:var(--muted);border-radius:999px;padding:6px 9px;font-size:.72rem}.song-control-summary strong{color:var(--ink)}.song-tab-stage{margin-top:18px}.tab-stage-heading{align-items:center}.tab-stage-heading span{color:var(--muted);margin-top:7px;font-size:.8rem;display:block}.practice-tab-list{gap:15px;display:grid}.practice-layer-legend{flex-wrap:wrap;gap:6px;display:flex}.practice-layer-legend span{border:1px solid var(--line);background:var(--surface);color:var(--muted);border-radius:999px;padding:6px 9px;font-size:.68rem;font-weight:850}.practice-layer-legend .chord{color:var(--active)}.practice-layer-legend .tab{color:var(--coral)}.practice-layer-legend .notes{color:var(--blue)}.practice-tab-section{border:1px solid var(--line);border-radius:var(--radius-md);background:var(--surface);min-width:0;overflow:hidden}.practice-tab-section>header{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;min-height:48px;padding:0 16px;display:flex}.practice-tab-section>header span{color:var(--muted);font-size:.72rem;font-weight:800}.practice-tab-scroll{overscroll-behavior-inline:contain;scrollbar-width:thin;overflow-x:auto}.practice-tab-grid{--practice-columns:24;width:max(100%, calc(var(--practice-columns) * 56px + 42px));min-width:0;padding:12px 12px 16px}.practice-string-row,.practice-chord-row,.practice-note-row{grid-template-columns:42px repeat(var(--practice-columns), minmax(56px, 1fr));display:grid}.practice-string-row>span:not(.practice-string-label),.practice-chord-row>span:not(.practice-string-label),.practice-note-row>span:not(.practice-string-label){border-right:1px solid color-mix(in srgb, var(--line) 72%, transparent);text-align:center;place-items:center;min-width:0;min-height:31px;font-size:.75rem;font-weight:850;display:grid}.practice-string-row>span:not(.practice-string-label){color:var(--coral);font-family:IBM Plex Mono,ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;position:relative}.practice-string-row>span:not(.practice-string-label):before{content:"";border-top:1px solid color-mix(in srgb, var(--ink) 58%, var(--line));position:absolute;top:50%;left:0;right:0}.practice-string-row>span:not(.practice-string-label){z-index:0;text-shadow:0 0 0 var(--surface), 0 0 5px var(--surface), 0 0 8px var(--surface)}.practice-string-label{z-index:3;background:var(--surface);color:var(--ink);place-items:center start;font-family:IBM Plex Mono,ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-weight:900;display:grid;position:sticky;left:0}.practice-chord-row .practice-string-label{background:var(--surface)}.practice-note-row .practice-string-label{background:var(--surface-soft)}.practice-chord-row{color:var(--active)}.practice-note-row{color:var(--blue)}.practice-note-row>span:not(.practice-string-label){min-height:42px;padding:4px;font-size:.64rem;line-height:1.25}.practice-ad-sheet-backdrop,.publish-dialog-backdrop,.tab-action-dialog-backdrop{z-index:100;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);background:#02061794;display:grid;position:fixed;inset:0}.practice-ad-sheet-backdrop{place-items:end center;padding:16px 16px 0}.publish-dialog-backdrop,.tab-action-dialog-backdrop{place-items:center;padding:20px}.practice-ad-sheet,.publish-dialog,.tab-action-dialog{border:1px solid color-mix(in srgb, var(--line) 82%, transparent);background:var(--paper);opacity:1;width:min(460px,100%);max-height:calc(100vh - 40px);transition:transform .24s var(--ease-drawer), opacity .18s ease;border-radius:24px;padding:24px;overflow-y:auto;transform:translateY(0);box-shadow:0 38px 120px #0000004d}@starting-style{.practice-ad-sheet,.publish-dialog,.tab-action-dialog{opacity:0;transform:translateY(100%)}}.practice-ad-sheet{padding-bottom:calc(20px + env(safe-area-inset-bottom));border-radius:24px 24px 0 0}.publish-dialog,.tab-action-dialog{transition:transform .22s var(--ease-out), opacity .18s ease;transform:translateY(0)scale(1)}@starting-style{.publish-dialog,.tab-action-dialog{opacity:0;transform:translateY(12px)scale(.97)}}.practice-ad-sheet-heading{border-bottom:1px solid var(--line);padding-bottom:18px}.practice-ad-sheet-heading .ad-label{margin-bottom:12px}.practice-ad-sheet-heading p{color:var(--active);margin:0;font-size:.74rem;font-weight:900}.practice-ad-sheet-heading h2{letter-spacing:-.04em;margin:5px 0 0;font-size:1.45rem}.practice-ad-sheet-content{text-align:center;justify-items:center;gap:10px;padding:26px 12px 20px;display:grid}.practice-ad-sheet-content>svg{color:var(--active)}.practice-ad-sheet-content p{color:var(--muted);margin:0;line-height:1.55}.practice-ad-sheet-content small{max-width:330px;color:var(--muted);font-size:.68rem;line-height:1.45}.practice-ad-sheet-content .practice-ad-sheet-suppression{color:var(--ink);font-size:.78rem;font-weight:800}.practice-ad-sheet-banner{background:var(--surface);border-radius:14px;width:100%;max-width:100%;display:block;overflow:hidden}.practice-ad-sheet-banner-frame{border:0;width:100%;height:100%;display:block}.practice-ad-sheet-content a,.practice-ad-sheet-continue{border:1px solid var(--line);background:var(--surface);min-height:44px;color:var(--ink);transition:transform .16s var(--ease-out);border-radius:12px;justify-content:center;align-items:center;gap:7px;padding:0 15px;font-weight:900;text-decoration:none;display:inline-flex}.practice-ad-sheet-continue{background:var(--ink);width:100%;color:var(--paper)}.practice-ad-sheet-content a:active,.practice-ad-sheet-continue:active{transform:scale(.97)}.publish-version-trigger{border:1px solid var(--active);background:var(--active);color:#fff;border-radius:11px;align-items:center;gap:7px;min-height:42px;padding:0 13px;font-weight:900;display:inline-flex}.publish-dialog h2{letter-spacing:-.04em;margin:5px 0 10px}.publish-dialog>p:not(.toolbar-kicker){color:var(--muted);margin:0 0 20px;line-height:1.6}.publish-dialog label{margin-top:12px}.publish-dialog input{border-radius:11px;min-height:44px}.publish-dialog-error{color:var(--danger);margin-top:10px;font-size:.8rem;font-weight:850;display:block}.publish-dialog-actions{grid-template-columns:1fr 1fr;gap:8px;margin-top:20px;display:grid}.publish-dialog-actions button{border:1px solid var(--line);background:var(--surface);min-height:44px;color:var(--ink);border-radius:11px;font-weight:900}.publish-dialog-actions button.primary{border-color:var(--active);background:var(--active);color:#fff}.tab-action-dialog h2{letter-spacing:-.04em;margin:5px 0 10px}.tab-action-dialog>p:not(.toolbar-kicker){color:var(--muted);margin:0;line-height:1.6}.tab-action-dialog-actions{grid-template-columns:1fr 1fr;gap:8px;margin-top:22px;display:grid}.tab-action-dialog-actions button{border:1px solid var(--line);background:var(--surface);min-height:44px;color:var(--ink);border-radius:11px;font-weight:900}.tab-action-dialog-actions button.danger{border-color:var(--danger);background:var(--danger);color:#fff}.public-empty{min-height:220px;color:var(--muted);text-align:center;place-items:center;display:grid}@media (hover:hover) and (pointer:fine){.song-card:hover{border-color:color-mix(in srgb, var(--active) 54%, var(--line));box-shadow:0 22px 55px color-mix(in srgb, var(--ink) 10%, transparent);transform:translateY(-3px)}.app-global-nav button:not(.active):hover,.app-settings-trigger:hover,.app-settings-item:hover,.key-control button:hover,.display-toggles button:hover{color:var(--active)}.preference-controls button:hover,.column-nav-button:hover,.dashboard-action:not(:disabled):hover,.workspace-open-button:hover,.dashboard-back-button:hover{border-color:var(--active)}.technique-palette button:hover,.scale-note-chip:hover,.guitar-practice-view-tabs button:hover,.scale-curriculum-levels button:hover,.scale-curriculum-card button:hover,.scale-box-stepper button:not(:disabled):hover,.drill-category-tab:hover,.drill-card:hover{border-color:var(--active);background:var(--active-soft);color:var(--active)}.icon-group button:hover{border-color:var(--line);background:var(--surface)}.practice-play-button:hover{border-color:var(--active);background:var(--active);color:var(--app-bg)}.practice-stop-button:hover{border-color:var(--danger);background:color-mix(in srgb, var(--danger) 12%, var(--surface));color:var(--danger)}}@media (width<=860px){.app-global-header{padding:calc(8px + var(--safe-area-inset-top,env(safe-area-inset-top))) 12px 8px;grid-template-columns:minmax(0,1fr) auto;gap:8px 12px}.app-global-actions{grid-area:1/2}.app-global-nav{grid-area:2/1/auto/-1;grid-template-columns:repeat(3,minmax(0,1fr));width:100%;display:grid}.app-global-nav button{min-height:42px;padding:0 8px}.song-card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.song-control-deck{grid-template-columns:1fr 1fr}.display-toggles{grid-column:1/-1}}@media (width<=600px){.public-shell{padding-bottom:calc(36px + var(--safe-area-inset-bottom,env(safe-area-inset-bottom)))}.app-global-header{background:color-mix(in srgb, var(--app-bg) 97%, transparent)}.app-global-brand img{width:34px;height:34px}.app-global-brand strong{font-size:.84rem}.app-global-status{display:none}.app-settings-trigger{min-height:40px}.app-settings-trigger>span{display:none}.app-global-nav{border-radius:11px;gap:2px}.app-global-nav button{justify-items:center;gap:2px;min-height:44px;font-size:.68rem;display:grid}.analytics-preferences{right:9px;bottom:calc(9px + var(--safe-area-inset-bottom,env(safe-area-inset-bottom)));width:calc(100% - 18px);max-height:calc(100dvh - 18px - var(--safe-area-inset-bottom,env(safe-area-inset-bottom)));border-radius:15px;gap:16px;padding:18px}.analytics-preferences-actions button{width:100%}.library-content,.song-practice-header,.song-tab-stage{width:min(100% - 24px,1180px)}.song-library-content{margin-top:16px}.library-content,.song-tab-stage{border-radius:22px;padding:18px}.library-section-heading,.tab-stage-heading{flex-direction:column;align-items:stretch}.song-search{width:100%}.song-card-grid{grid-template-columns:1fr}.song-card-open{min-height:305px}.song-practice-header{padding-top:22px}.song-practice-title{flex-direction:column;align-items:stretch;padding:24px 0}.song-practice-title h1{font-size:2.7rem}.song-actions{justify-content:stretch}.song-actions>*{flex:1}.song-actions .version-safety{text-align:left;flex-basis:100%;max-width:none;margin-left:0}.song-control-deck{grid-template-columns:1fr;padding:12px}.display-toggles{grid-column:auto}.key-control>div{flex-wrap:wrap}.key-control select{flex:1}.song-control-summary{flex-wrap:nowrap;overflow-x:auto}.song-control-summary span{flex:none}.tab-stage-heading button{width:100%}.practice-tab-grid{width:calc(var(--practice-columns) * 51px + 38px);padding-inline:8px}.practice-string-row,.practice-chord-row,.practice-note-row{grid-template-columns:38px repeat(var(--practice-columns), 51px)}.publish-dialog-backdrop,.tab-action-dialog-backdrop{place-items:end stretch;padding:0}.publish-dialog,.tab-action-dialog{width:100%;padding-bottom:calc(20px + env(safe-area-inset-bottom));border-radius:24px 24px 0 0}}@media (prefers-reduced-motion:reduce){.auth-skeleton:after{animation:none}button,.song-card,.analytics-preferences,.practice-ad-sheet,.publish-dialog,.tab-action-dialog{transition-duration:.01ms!important}button:active:not(:disabled),.song-card:hover{transform:none}}:root[data-theme=dark]{--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;color:#eaf0f7;--ink:#eaf0f7;--muted:#94a3b8;--line:#243244;--panel:#111c2e;--paper:#0f1a2a;--active:#60a5fa;--active-soft:#172b46;--coral:#3b82f6;--coral-soft:#172b46;--danger:#f87171;--gold:#fbbf24;--blue:#93c5fd;--success:#34d399;--surface:#142033;--surface-soft:#18263a;--app-bg:#0b1220;--shadow-sm:0 1px 3px #00000047;--shadow:0 1px 3px #00000047, 0 22px 58px #0000004d;--fret-string-line:var(--ink);--scale-cell-fill:color-mix(in srgb, var(--blue) 9%, transparent);--scale-cell-border:transparent;--scale-marker-bg:color-mix(in srgb, var(--paper) 94%, var(--surface));--scale-marker-border:color-mix(in srgb, var(--active) 62%, var(--line));--scale-marker-degree-bg:var(--active-soft);--scale-marker-degree-text:var(--active);background:#0b1220}:root[data-theme=dark] .app-global-nav button.active,:root[data-theme=dark] .song-actions button,:root[data-theme=dark] .tab-stage-heading button,:root[data-theme=dark] .publish-dialog-actions button.primary{color:#08111f}*{box-sizing:border-box}html{max-width:100%;overflow-x:clip}body{background:var(--app-bg);min-width:0;color:var(--ink);font-variant-numeric:tabular-nums;margin:0;overflow-x:clip}button,input,select,textarea{font:inherit}button{cursor:pointer;transition:transform .14s var(--ease-out), border-color .18s ease, background-color .18s ease, color .18s ease, opacity .18s ease}button:active:not(:disabled){transform:scale(.97)}button:disabled{cursor:not-allowed;opacity:.48}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid color-mix(in srgb, var(--active) 42%, transparent);outline-offset:3px}.app-shell{background:linear-gradient(180deg, color-mix(in srgb, var(--surface) 48%, transparent), color-mix(in srgb, var(--app-bg) 96%, transparent)), var(--app-bg);grid-template-rows:auto minmax(0,1fr);grid-template-columns:minmax(0,1fr);min-height:100vh;display:grid}.brand-block{align-items:center;gap:12px;display:flex}.brand-button{min-width:0;color:inherit;text-align:left;background:0 0;border:0;padding:0;text-decoration:none}.brand-icon{flex:none;width:44px;height:44px;display:block}.brand-block strong{display:block}.preference-controls{grid-template-columns:1fr 1fr;gap:8px;display:grid}.preference-controls button{border:1px solid var(--line);background:var(--surface);min-height:38px;color:var(--ink);border-radius:8px;justify-content:center;align-items:center;gap:7px;font-size:.84rem;font-weight:900;display:inline-flex}label{color:var(--muted);gap:7px;font-size:.82rem;font-weight:800;display:grid}input,select,textarea{border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--surface);width:100%;color:var(--ink);outline:none}input,select{min-height:38px;padding:0 11px}textarea{resize:vertical;padding:10px 11px;line-height:1.5}input:focus,select:focus,textarea:focus{border-color:var(--active);box-shadow:var(--focus-ring)}.notation-grid{gap:6px;padding:0 12px 12px;display:grid}.notation-grid span{color:var(--muted);grid-template-columns:58px 1fr;align-items:center;gap:8px;font-size:.78rem;display:grid}.notation-grid strong{border:1px solid var(--line);background:var(--surface-soft);min-height:28px;color:var(--coral);border-radius:6px;place-items:center;font-family:IBM Plex Mono,SFMono-Regular,Menlo,Consolas,monospace;font-size:.82rem;display:inline-grid}.dashboard-shell{min-height:100vh;padding-bottom:calc(64px + var(--safe-area-inset-bottom,env(safe-area-inset-bottom)));background:radial-gradient(circle at 78% -8%, color-mix(in srgb, var(--active) 9%, transparent), transparent 38rem), var(--app-bg)}.login-shell{min-height:100vh;padding:calc(22px + var(--safe-area-inset-top,env(safe-area-inset-top))) 22px calc(22px + var(--safe-area-inset-bottom,env(safe-area-inset-bottom)));background:linear-gradient(180deg, color-mix(in srgb, var(--surface) 68%, transparent), transparent 440px), var(--app-bg);grid-template-rows:auto minmax(0,1fr);gap:18px;display:grid}.dashboard-topbar{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;gap:16px;width:min(1180px,100%);margin:0 auto;padding-bottom:16px;display:flex}.dashboard-topbar .brand-block span{color:var(--muted);margin-top:2px;font-size:.82rem;font-weight:800;display:block}.login-main{place-items:center;width:min(1180px,100%);margin:0 auto;padding:32px 0 72px;display:grid}.login-panel{border-radius:var(--radius-lg);background:var(--surface);width:min(420px,100%);box-shadow:var(--shadow);border:0;gap:14px;padding:32px;display:grid;position:relative;overflow:hidden}.login-panel:before{content:"";background:repeating-linear-gradient(to bottom, var(--line) 0 1px, transparent 1px 2px);height:7px;position:absolute;top:0;left:24px;right:24px}.login-panel h1{margin:0;font-size:2rem;line-height:1.1}.login-panel p{color:var(--muted);margin:0;font-weight:800;line-height:1.5}.login-google-button{border:1px solid var(--active);border-radius:var(--radius-sm);background:var(--active);min-height:46px;color:var(--app-bg);justify-content:center;align-items:center;gap:9px;margin-top:8px;font-weight:900;display:inline-flex}.login-try-button{border:1px solid var(--line);border-radius:var(--radius-sm);min-height:44px;color:var(--ink);background:0 0;justify-content:center;align-items:center;font-weight:900;display:inline-flex}.login-secondary-actions{justify-content:center;align-items:center;min-height:28px;display:flex}.login-secondary-actions a{color:var(--muted);text-underline-offset:.2em;font-size:.8rem;font-weight:800}.google-mark{flex:0 0 20px;width:20px;height:20px}.google-identity-button{place-items:center;width:100%;min-height:46px;margin-top:8px;display:grid}.google-identity-button>div{max-width:100%}.login-pending{color:var(--muted);font-size:.8rem;font-weight:800}.dashboard-main{align-content:start;gap:18px;width:min(1180px,100%);margin:0 auto;padding:28px 20px 0;display:grid}.dashboard-intro{grid-template-columns:minmax(0,1fr) minmax(240px,360px);align-items:end;gap:18px;padding:12px 0 4px;display:grid}.dashboard-copy h1{letter-spacing:-.055em;text-wrap:balance}.dashboard-copy{gap:10px;min-width:0;display:grid}.dashboard-copy p{max-width:720px;color:var(--muted);margin:0;font-weight:700;line-height:1.6}.dashboard-metrics{grid-template-columns:1fr;gap:10px;display:grid}.metric-tile{border-radius:var(--radius-md);background:var(--surface);min-height:92px;box-shadow:var(--shadow-sm);border:0;gap:7px;padding:18px;display:grid}.metric-tile span{color:var(--muted);text-transform:uppercase;font-size:.78rem;font-weight:900}.metric-tile strong{color:var(--active);font-size:1.45rem;line-height:1}.dashboard-actions{flex-wrap:wrap;gap:10px;padding:12px 0;display:flex}.dashboard-action,.workspace-open-button,.dashboard-back-button{border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--surface);min-height:40px;color:var(--ink);justify-content:center;align-items:center;gap:8px;font-weight:900;display:inline-flex}.dashboard-action{padding:0 14px}.dashboard-action.primary{border-color:var(--active);background:var(--active);color:var(--app-bg)}.workspace-board{border-top:1px solid var(--line);gap:14px;padding-top:16px;display:grid}.workspace-card-list{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;display:grid}.board-toolbar{justify-content:space-between;align-items:end;gap:16px;display:flex}.board-toolbar h2{margin:0;font-size:1.25rem;line-height:1.2}.workspace-count{border:1px solid var(--line);background:var(--surface);min-height:32px;color:var(--active);border-radius:999px;align-items:center;padding:0 10px;font-size:.78rem;font-weight:900;display:inline-flex}.dashboard-search{width:min(260px,100%);position:relative}.dashboard-search span{clip:rect(0 0 0 0);white-space:nowrap;width:1px;height:1px;position:absolute;overflow:hidden}.workspace-card{border-radius:var(--radius-md);background:var(--surface);box-shadow:var(--shadow-sm);border:0;grid-template-columns:minmax(220px,1.2fr) minmax(0,2fr) auto;align-items:center;gap:14px;padding:20px;display:grid}.workspace-card-list .workspace-card{grid-template-columns:minmax(0,1fr);align-items:stretch;min-height:224px}.workspace-card-action{background:color-mix(in srgb, var(--surface) 88%, var(--surface-soft))}.workspace-card-main{align-items:center;gap:12px;min-width:0;display:flex}.workspace-card-main svg{color:var(--blue)}.workspace-card-main strong,.workspace-card-main span{text-overflow:ellipsis;white-space:nowrap;display:block;overflow:hidden}.workspace-card-main span{color:var(--muted);margin-top:3px;font-size:.82rem;font-weight:800}.workspace-card dl{grid-template-columns:70px minmax(140px,1fr) minmax(140px,1fr);gap:10px;min-width:0;margin:0;display:grid}.workspace-card-list .workspace-card dl{grid-template-columns:repeat(3,minmax(0,1fr))}.workspace-card dl div{min-width:0}.workspace-card dt{color:var(--muted);text-transform:uppercase;font-size:.72rem;font-weight:900}.workspace-card dd{color:var(--ink);text-overflow:ellipsis;white-space:nowrap;margin:4px 0 0;font-weight:800;overflow:hidden}.workspace-open-button{padding:0 13px}.workspace-card-actions{justify-content:space-between;align-items:center;gap:10px;margin-top:auto;display:flex}.workspace-status-pill{border:1px solid var(--line);background:var(--surface-soft);min-height:30px;color:var(--muted);white-space:nowrap;border-radius:8px;align-items:center;padding:0 9px;font-size:.76rem;font-weight:900;display:inline-flex}.workspace-status-pill.pending{border-color:color-mix(in srgb, var(--gold) 56%, var(--line));background:color-mix(in srgb, var(--gold) 13%, var(--surface));color:color-mix(in srgb, var(--gold) 76%, var(--ink))}.workspace-status-pill.source{border-color:color-mix(in srgb, var(--blue) 46%, var(--line));background:color-mix(in srgb, var(--blue) 10%, var(--surface));color:color-mix(in srgb, var(--blue) 76%, var(--ink))}.workspace-card-song-source .workspace-card-main svg{color:var(--coral)}.dashboard-empty{border:1px dashed var(--line);background:color-mix(in srgb, var(--surface) 74%, transparent);min-height:150px;color:var(--muted);border-radius:8px;justify-items:start;gap:8px;padding:22px;display:grid}.dashboard-empty svg{color:var(--blue)}.dashboard-empty strong{color:var(--ink);font-size:1.05rem}.dashboard-back-button{justify-self:start;min-height:34px;padding:0 10px;font-size:.82rem}.workspace{min-width:0;padding:20px 20px 72px;padding-bottom:max(72px, calc(40px + env(safe-area-inset-bottom)));grid-template-rows:auto auto auto auto;grid-template-columns:minmax(0,1fr);align-content:start;gap:14px;display:grid}.song-practice-context{border:1px solid var(--line);border-left:4px solid var(--coral);background:color-mix(in srgb, var(--surface) 90%, var(--coral-soft));min-width:0;box-shadow:0 10px 26px color-mix(in srgb, var(--ink) 5%, transparent);border-radius:8px;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:16px;padding:14px 16px;display:grid}.song-practice-context>div{gap:3px;min-width:0;display:grid}.song-practice-context p,.song-practice-context strong,.song-practice-context span{margin:0}.song-practice-context p{color:var(--coral);font-size:.72rem;font-weight:900}.song-practice-context strong{color:var(--ink);text-overflow:ellipsis;white-space:nowrap;font-size:.98rem;overflow:hidden}.song-practice-context>div>span{color:var(--muted);text-overflow:ellipsis;white-space:nowrap;font-size:.78rem;font-weight:800;overflow:hidden}.song-practice-context button{border:1px solid color-mix(in srgb, var(--coral) 58%, var(--line));background:var(--surface);min-height:42px;color:var(--ink);white-space:nowrap;border-radius:8px;justify-content:center;align-items:center;gap:7px;padding:0 13px;font-weight:900;display:inline-flex}.toolbar,.control-strip,.custom-tuning{background:color-mix(in srgb, var(--surface) 78%, transparent);box-shadow:var(--shadow-sm);border:0;border-radius:8px}.toolbar{grid-template-columns:minmax(0,1fr) auto;justify-content:space-between;align-items:start;gap:18px;padding:20px;display:grid}.toolbar-kicker{color:var(--active);text-transform:uppercase;margin:0 0 5px;font-size:.78rem;font-weight:900}.workspace-meta-editor{gap:6px;min-width:0;display:grid}.workspace-meta-fields{grid-template-columns:minmax(180px,1fr);align-items:end;gap:8px;display:grid}.workspace-title-field,.workspace-meta-fields label{gap:5px}.workspace-title-field span,.workspace-meta-fields span{color:var(--muted);text-transform:uppercase;font-size:.72rem;font-weight:900}.workspace-title-field input{font-weight:900}.workspace-meta-fields input{min-height:36px;font-size:.9rem}.learning-meta-summary{align-content:center;gap:8px;min-height:52px;display:grid}.learning-meta-summary strong{color:var(--ink);font-size:1.05rem;font-weight:900}.learning-meta-chips{flex-wrap:wrap;gap:6px;display:flex}.learning-meta-chips span{border:1px solid var(--line);background:var(--surface);min-height:28px;color:var(--muted);border-radius:8px;align-items:center;padding:0 9px;font-size:.78rem;font-weight:900;display:inline-flex}h1{letter-spacing:0;margin:0;font-size:clamp(1.8rem,3.6vw,3rem);line-height:1}.tool-groups{flex-wrap:nowrap;justify-content:flex-end;gap:8px;min-width:max-content;display:flex}.workspace-context-tools{gap:6px;display:flex}.new-tab-button,.clear-tab-button{border:1px solid var(--active);background:var(--active-soft);min-height:44px;color:var(--active);border-radius:8px;justify-content:center;align-items:center;gap:6px;padding:0 10px;font-size:.78rem;font-weight:900;display:inline-flex}.clear-tab-button{border-color:color-mix(in srgb, var(--danger) 35%, var(--line));background:var(--surface-soft);color:var(--danger);transition:transform .14s var(--ease-out), border-color .14s ease, background-color .14s ease}.clear-tab-button:active{transform:scale(.97)}.workspace-load-error{border:1px solid color-mix(in srgb, var(--danger) 45%, var(--line));background:color-mix(in srgb, var(--danger) 9%, var(--surface));color:var(--danger);border-radius:10px;padding:12px 16px;font-weight:800}.cloud-workspace-loading{place-content:center;min-height:320px}.workspace-tool-popover{position:relative}.workspace-tool-popover>summary{border:1px solid var(--line);background:var(--surface-soft);min-height:44px;color:var(--ink);cursor:pointer;transition:transform .14s var(--ease-out), border-color .14s ease, color .14s ease;border-radius:8px;justify-content:center;align-items:center;gap:6px;padding:0 10px;font-size:.78rem;font-weight:900;list-style:none;display:inline-flex}.workspace-tool-popover>summary::-webkit-details-marker{display:none}.workspace-tool-popover>summary:active{transform:scale(.97)}.workspace-tool-popover[open]>summary{border-color:var(--active);color:var(--active)}.workspace-tool-popover-panel{z-index:75;border:1px solid var(--line);background:color-mix(in srgb, var(--surface) 98%, transparent);width:min(340px,100vw - 28px);box-shadow:0 18px 48px color-mix(in srgb, var(--ink) 16%, transparent);transform-origin:100% 0;transition:opacity .16s var(--ease-out), transform .16s var(--ease-out);border-radius:12px;gap:12px;padding:14px;display:grid;position:absolute;top:calc(100% + 8px);right:0}@starting-style{.workspace-tool-popover-panel{opacity:0;transform:scale(.97)translateY(-4px)}}.document-info-panel textarea{min-height:110px}.document-meta-fields{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;display:grid}.document-status-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:7px;display:grid}.document-status-grid>span{border:1px solid var(--line);background:var(--surface-soft);border-radius:8px;gap:3px;min-width:0;padding:9px 10px;display:grid}.document-status-grid>span:last-child{grid-column:1/-1}.document-status-grid small{color:var(--muted);font-size:.68rem;font-weight:800}.document-status-grid strong{color:var(--ink);text-overflow:ellipsis;white-space:nowrap;font-size:.78rem;overflow:hidden}.notation-popover-panel{width:min(290px,100vw - 28px)}.notation-popover-panel>strong{color:var(--ink);font-size:.84rem}.notation-popover-panel .notation-grid{padding:0}.workspace-file-panel{gap:4px;width:min(370px,100vw - 28px);padding:8px}.workspace-file-panel>button{width:100%;min-height:58px;color:var(--ink);text-align:left;transition:transform .14s var(--ease-out), background-color .14s ease, border-color .14s ease;background:0 0;border:1px solid #0000;border-radius:9px;grid-template-columns:24px minmax(0,1fr);align-items:center;gap:10px;padding:9px 10px;display:grid}.workspace-file-panel>button:hover{border-color:var(--line);background:var(--surface-soft)}.workspace-file-panel>button:active{transform:scale(.98)}.workspace-file-panel>button>svg{color:var(--blue)}.workspace-file-panel>button>span,.workspace-file-panel>button strong,.workspace-file-panel>button small{min-width:0;display:block}.workspace-file-panel>button strong{color:inherit;font-size:.82rem;font-weight:900}.workspace-file-panel>button small{color:var(--muted);margin-top:3px;font-size:.7rem;font-weight:750;line-height:1.35}.workspace-file-panel>button.danger{border-top-color:var(--line);color:var(--danger);margin-top:4px}.workspace-file-panel>button.danger>svg{color:var(--danger)}.icon-group{border:1px solid var(--line);background:var(--surface-soft);border-radius:8px;flex:none;gap:6px;padding:5px;display:flex}.icon-group button,.chord-layer button,.note-layer button,.tab-cell{place-items:center;display:grid}.icon-group button{width:34px;height:34px;color:var(--ink);background:0 0;border:1px solid #0000;border-radius:8px}.icon-group button.shortcut-button{gap:5px;width:auto;min-width:76px;padding:0 7px;display:inline-flex}.shortcut-button kbd{font:inherit;color:var(--muted);font-size:.68rem;font-weight:900}.icon-group button.pdf-button{gap:5px;width:auto;min-width:62px;padding:0 8px;font-size:.78rem;font-weight:900;display:inline-flex}.hidden-input{display:none}.control-strip{flex-wrap:wrap;align-items:end;gap:10px;padding:14px;display:flex}.control-strip label{min-width:170px}.control-strip .capo-select{min-width:108px}.position-cluster{grid-template-columns:repeat(2,38px);align-items:end;gap:6px;display:grid}.column-nav-button{border:1px solid var(--line);background:var(--surface);width:38px;min-height:38px;color:var(--ink);border-radius:8px;place-items:center;display:grid}.fret-entry{min-width:118px;max-width:118px}.technique-palette{border:1px solid var(--line);background:var(--surface-soft);border-radius:8px;grid-template-columns:repeat(9,34px);align-self:end;gap:5px;min-height:38px;padding:4px;display:grid}.technique-palette button{width:30px;min-width:30px;height:30px;color:var(--coral);background:0 0;border:1px solid #0000;border-radius:7px;place-items:center;font-family:IBM Plex Mono,SFMono-Regular,Menlo,Consolas,monospace;font-size:.78rem;font-weight:900;display:grid}.technique-palette button.active{border-color:var(--active);background:var(--surface);color:var(--active)}.scope-select{min-width:150px;max-width:150px}.action-button,.wide-action{border:1px solid var(--ink);background:var(--ink);min-height:38px;color:var(--app-bg);border-radius:8px;font-weight:900}.action-button{padding:0 14px}.action-button.subtle,.wide-action{background:var(--surface);color:var(--ink)}.transpose-readout{border:1px solid var(--line);background:var(--surface);min-height:38px;color:var(--blue);border-radius:8px;align-items:center;gap:8px;padding:0 12px;font-weight:900;display:inline-flex}.custom-tuning{grid-template-columns:repeat(6,minmax(90px,1fr));gap:10px;padding:14px;display:grid}.learning-lab{grid-template-columns:minmax(0,1fr);gap:14px;min-width:0;display:grid}.practice-mode-lab{container:practice-workspace/inline-size}.learning-toolbar,.practice-lab{border-radius:var(--radius-md);background:color-mix(in srgb, var(--surface) 82%, transparent);width:100%;min-width:0;box-shadow:var(--shadow-sm);border:0;gap:14px;padding:20px;display:grid}.practice-audio-error{border:1px solid color-mix(in srgb, var(--coral) 45%, var(--line));background:var(--coral-soft);color:var(--ink);border-radius:8px;margin:0;padding:10px 12px;font-size:.82rem;font-weight:800}.practice-lab>.practice-drill-panel{order:1}.practice-lab>.drill-guide-panel{order:2}.practice-lab>.practice-session-bar,.practice-lab>.practice-session-bar-sentinel{order:3}.practice-lab>.practice-controls{order:4}.practice-lab>.practice-bpm-panel{order:5}.learning-toolbar{grid-template-columns:minmax(0,1fr) minmax(320px,.9fr);align-items:start}.practice-lab{grid-template-columns:minmax(0,1fr)}.practice-mode-lab .practice-lab{display:contents}.practice-mode-lab .learning-toolbar{order:1}.practice-mode-lab .practice-drill-panel{order:2}.practice-mode-lab .practice-controls{border:1px solid var(--line);border-radius:var(--radius-md);background:color-mix(in srgb, var(--surface) 82%, transparent);order:3;padding:12px}.practice-mode-lab .practice-session-bar,.practice-mode-lab .practice-session-bar-sentinel{order:5}.practice-mode-lab .practice-fretboard-board{order:6}.practice-mode-lab .practice-bpm-panel{order:4}.practice-mode-lab .drill-guide-panel{order:7}.practice-mode-lab .degree-reference-panel{order:8}.guitar-practice-view{gap:12px;min-width:0;display:grid}.guitar-practice-view-tabs{border:1px solid var(--line);background:var(--surface-soft);border-radius:12px;grid-template-columns:repeat(2,minmax(112px,1fr));width:fit-content;padding:4px;display:grid}.guitar-practice-view-tabs button{min-height:38px;color:var(--muted);background:0 0;border:0;border-radius:8px;padding:0 14px;font-size:.82rem;font-weight:900;transition:color .14s,background-color .14s,transform .14s cubic-bezier(.23,1,.32,1)}.guitar-practice-view-tabs button.active{background:var(--surface);box-shadow:0 1px 3px color-mix(in srgb, var(--ink) 10%, transparent);color:var(--active)}.guitar-practice-view-tabs button:active,.scale-curriculum-levels button:active,.scale-curriculum-card button:active{transform:scale(.97)}.scale-curriculum-page{border:1px solid var(--line);border-radius:var(--radius-lg);background:var(--surface);min-width:0;box-shadow:var(--shadow);gap:18px;padding:clamp(18px,3vw,28px);display:grid}.scale-curriculum-page-header{gap:6px;max-width:720px;display:grid}.scale-curriculum-page-header h2{color:var(--ink);letter-spacing:-.04em;margin:0;font-size:clamp(1.35rem,3vw,1.9rem)}.scale-curriculum-page-header>p:last-child{color:var(--muted);margin:0;font-weight:750;line-height:1.55}.scale-curriculum-levels{flex-wrap:wrap;gap:8px;display:flex}.scale-curriculum-levels button{border:1px solid var(--line);background:var(--surface);min-height:40px;color:var(--ink);border-radius:999px;padding:0 16px;font-size:.82rem;font-weight:900;transition:color .14s,border-color .14s,background-color .14s,transform .14s cubic-bezier(.23,1,.32,1)}.scale-curriculum-levels button.active{border-color:var(--active);background:var(--active-soft);color:var(--active)}.scale-curriculum-stage{gap:14px;display:grid}.scale-curriculum-stage-heading{gap:4px;display:grid}.scale-curriculum-stage-heading>span{color:var(--active);letter-spacing:.08em;text-transform:uppercase;font-size:.72rem;font-weight:950}.scale-curriculum-stage-heading>strong{color:var(--ink);line-height:1.5}.scale-curriculum-list{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;display:grid}.scale-curriculum-card{border:1px solid var(--line);border-radius:var(--radius-md);background:var(--surface-soft);grid-template-columns:34px minmax(0,1fr) auto;align-items:center;gap:12px;min-width:0;padding:14px;display:grid}.scale-curriculum-card.current{border-color:color-mix(in srgb, var(--active) 52%, var(--line))}.scale-curriculum-order{background:var(--active-soft);width:32px;height:32px;color:var(--active);border-radius:50%;place-items:center;font-size:.78rem;font-weight:950;display:grid}.scale-curriculum-card>div{gap:3px;min-width:0;display:grid}.scale-curriculum-card small{color:var(--muted);font-size:.68rem;font-weight:900}.scale-curriculum-card strong{color:var(--ink);font-size:.94rem}.scale-curriculum-card>div>span{color:var(--muted);overflow-wrap:anywhere;font-size:.74rem;font-weight:800}.scale-curriculum-card button{border:1px solid var(--line);background:var(--surface);min-height:36px;color:var(--ink);white-space:nowrap;border-radius:9px;padding:0 11px;font-size:.72rem;font-weight:900;transition:color .14s,border-color .14s,background-color .14s,transform .14s cubic-bezier(.23,1,.32,1)}@media (width<=760px){.scale-curriculum-list{grid-template-columns:1fr}}@media (width<=520px){.guitar-practice-view-tabs{width:100%}.scale-curriculum-card{grid-template-columns:34px minmax(0,1fr)}.scale-curriculum-card button{grid-column:1/-1;width:100%}}.scale-note-strip{flex-wrap:wrap;gap:8px;display:flex}.scale-note-chip{border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--surface);min-height:34px;color:var(--ink);align-items:center;gap:7px;padding:0 10px;font-weight:900;display:inline-flex}.scale-note-chip.root{border-color:var(--active);background:var(--active-soft);color:var(--active)}.scale-note-strip strong{color:inherit;font-weight:900}.scale-note-strip em{color:var(--blue);font-style:normal;font-weight:900}.learning-controls,.practice-controls{grid-template-columns:repeat(2,minmax(140px,1fr));align-items:end;gap:10px;display:grid}.scale-box-picker{grid-column:1/-1;gap:6px;min-width:0;display:grid}.scale-box-picker-label{color:var(--muted);font-size:.72rem;font-weight:900}.scale-box-stepper{grid-template-columns:minmax(82px,.9fr) minmax(108px,1.15fr) minmax(82px,.9fr);gap:7px;min-width:0;display:grid}.scale-box-stepper button,.scale-box-stepper output{border:1px solid var(--line);border-radius:10px;min-width:0;min-height:42px}.scale-box-stepper button{background:var(--surface);color:var(--ink);justify-content:center;align-items:center;gap:4px;padding:0 8px;font-size:.75rem;font-weight:900;transition:transform .14s cubic-bezier(.23,1,.32,1);display:inline-flex}.scale-box-stepper button:active:not(:disabled){transform:scale(.97)}.scale-box-stepper button:disabled{color:var(--muted);opacity:.42}.scale-box-stepper output{background:var(--active-soft);color:var(--active);text-align:center;place-content:center;gap:2px;padding:5px 8px;display:grid}.scale-box-stepper output small{font-size:.6rem;font-weight:900}.scale-box-stepper output strong{white-space:nowrap;font-size:.86rem}.scale-box-direct-input{width:fit-content;color:var(--muted);font-size:.68rem;font-weight:850}.scale-box-direct-input summary{cursor:pointer}.scale-box-direct-input label{grid-template-columns:auto 82px;align-items:center;gap:8px;padding-top:7px;display:grid}.scale-box-direct-input input{min-height:34px}.learning-controls .note-name-toggle,.practice-play-button,.practice-stop-button{border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--surface);min-height:38px;color:var(--ink);justify-content:center;align-items:center;gap:8px;padding:0 12px;font-weight:900;display:inline-flex}.practice-play-button,.practice-stop-button{min-width:0}.practice-play-button span,.practice-stop-button span{text-overflow:ellipsis;white-space:nowrap;min-width:0;overflow:hidden}.learning-controls .note-name-toggle.active,.practice-play-button[aria-pressed=true]{border-color:var(--active);background:var(--active);color:var(--app-bg)}.fretboard-board{--fret-column-width:58px;--fretboard-content-width:1450px;border:1px solid var(--line);border-radius:var(--radius-md);background:var(--paper);width:100%;min-width:0;max-width:100%;box-shadow:var(--shadow);overflow:auto}.practice-fretboard-shell{gap:7px;min-width:0;display:grid}.scale-box-map-label{border:1px solid color-mix(in srgb, var(--active) 38%, var(--line));background:color-mix(in srgb, var(--active-soft) 74%, var(--surface));min-height:30px;color:var(--active);border-radius:7px;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:3px 12px;padding:5px 10px;font-size:.78rem;font-weight:900;display:flex}.scale-box-map-label span{color:var(--muted);font-size:.72rem;font-weight:700}.fretboard-row{grid-template-columns:repeat(25, minmax(var(--fret-column-width), 1fr));width:max(100%, var(--fretboard-content-width));display:grid}.fretboard-row:not(:last-child){border-bottom:1px solid var(--line)}.fretboard-head{z-index:2;background:var(--surface-soft);position:sticky;top:0}.fretboard-fret-label,.fretboard-cell{border-right:1px solid var(--line);min-height:48px}.fretboard-fret-label{color:var(--muted);place-items:center;font-weight:900;display:grid}.fretboard-fret-label>button{width:100%;min-width:0;height:100%;min-height:48px;color:inherit;font:inherit;cursor:pointer;touch-action:pan-x;background:0 0;border:0;border-radius:0;padding:0}.fretboard-fret-label>button:focus-visible{outline:2px solid var(--active);outline-offset:-3px}.fretboard-fret-label>button:active,.fretboard-fret-label>button.box-start-selected{background:color-mix(in srgb, var(--active) 14%, transparent)}.fretboard-cell{background:linear-gradient(to bottom, transparent 23px, var(--fret-string-line) 23px, var(--fret-string-line) 25px, transparent 25px), transparent;align-content:center;place-items:center;font-size:.82rem;display:grid}.fretboard-cell.in-scale{background:linear-gradient(to bottom, transparent 23px, var(--fret-string-line) 23px, var(--fret-string-line) 25px, transparent 25px), var(--scale-cell-fill)}.fretboard-cell.in-scale:not(.root):not(.practice-target):not(.practice-current){box-shadow:inset 0 0 0 1px var(--scale-cell-border)}.fretboard-fret-label.scale-box-range{background:color-mix(in srgb, var(--active-soft) 66%, var(--surface-soft));color:var(--active)}.fretboard-cell.scale-box-range:not(.practice-target):not(.practice-current){background:linear-gradient(to bottom, transparent 23px, var(--fret-string-line) 23px, var(--fret-string-line) 25px, transparent 25px), color-mix(in srgb, var(--active-soft) 38%, var(--paper))}.fretboard-fret-label.scale-box-start,.fretboard-cell.scale-box-start{border-left:2px solid color-mix(in srgb, var(--active) 72%, var(--line))}.fretboard-fret-label.scale-box-end,.fretboard-cell.scale-box-end{border-right:2px solid color-mix(in srgb, var(--active) 72%, var(--line))}.fretboard-cell.root{background:linear-gradient(to bottom, transparent 23px, var(--fret-string-line) 23px, var(--fret-string-line) 25px, transparent 25px), var(--active-soft)}.fretboard-cell.practice-target{background:linear-gradient(to bottom, transparent 23px, var(--fret-string-line) 23px, var(--fret-string-line) 25px, transparent 25px), color-mix(in srgb, var(--gold) 48%, var(--surface));box-shadow:inset 0 0 0 2px var(--gold), inset 0 0 0 999px color-mix(in srgb, var(--gold) 10%, transparent)}.fretboard-cell.practice-current{background:linear-gradient(to bottom, transparent 23px, var(--fret-string-line) 23px, var(--fret-string-line) 25px, transparent 25px), color-mix(in srgb, var(--coral) 58%, var(--surface));outline:3px solid color-mix(in srgb, var(--coral) 84%, transparent);outline-offset:-3px;box-shadow:inset 0 0 0 2px var(--coral), 0 0 0 2px color-mix(in srgb, var(--coral) 28%, transparent)}.fretboard-note-marker{z-index:1;border:1px solid var(--scale-marker-border);border-radius:var(--radius-sm);background:var(--scale-marker-bg);justify-content:center;align-items:center;gap:4px;min-width:38px;min-height:30px;padding:3px 5px;line-height:1.05;display:inline-flex;position:relative;box-shadow:0 2px 8px #0f172a14}.fretboard-note-marker strong,.fretboard-note-marker span{justify-content:center;align-items:center;display:inline-flex}.fretboard-note-marker strong{background:var(--scale-marker-degree-bg);min-width:18px;min-height:18px;color:var(--scale-marker-degree-text);border-radius:999px;font-size:.68rem;font-weight:900}.fretboard-note-marker span{color:var(--blue);font-size:.78rem;font-weight:900}.fretboard-cell.root .fretboard-note-marker{border-color:var(--active);background:var(--active)}.fretboard-cell.root .fretboard-note-marker strong,.fretboard-cell.root .fretboard-note-marker span{color:var(--app-bg)}.fretboard-cell.root .fretboard-note-marker strong{background:color-mix(in srgb, var(--app-bg) 18%, transparent)}.fretboard-cell.practice-target .fretboard-note-marker{border-color:color-mix(in srgb, var(--gold) 82%, #0f172a);background:var(--gold);box-shadow:0 0 0 2px color-mix(in srgb, var(--gold) 32%, transparent), 0 5px 14px #0f172a3d}.fretboard-cell.practice-target .fretboard-note-marker strong,.fretboard-cell.practice-target .fretboard-note-marker span{color:#0f172a}.fretboard-cell.practice-target .fretboard-note-marker strong{background:#0f172a24}.fretboard-cell.root.practice-target .fretboard-note-marker{border-color:var(--active);background:var(--active)}.fretboard-cell.root.practice-target .fretboard-note-marker strong,.fretboard-cell.root.practice-target .fretboard-note-marker span{color:var(--app-bg)}.fretboard-cell.root.practice-target .fretboard-note-marker strong{background:color-mix(in srgb, var(--app-bg) 18%, transparent)}.fretboard-cell.practice-current .fretboard-note-marker{border-color:var(--coral);background:var(--coral);box-shadow:0 0 0 2px color-mix(in srgb, var(--coral) 46%, transparent), 0 6px 18px color-mix(in srgb, var(--coral) 36%, transparent)}.fretboard-cell.practice-current .fretboard-note-marker strong,.fretboard-cell.practice-current .fretboard-note-marker span{color:var(--app-bg)}.fretboard-cell.practice-current .fretboard-note-marker strong{background:color-mix(in srgb, var(--app-bg) 18%, transparent)}.degree-reference-panel{background:var(--surface-soft);min-width:0;box-shadow:var(--shadow-sm);border:0;border-radius:8px;gap:12px;padding:18px;display:grid}.degree-reference-heading{gap:4px;display:grid}.degree-reference-heading strong{color:var(--ink);font-size:1rem;font-weight:900}.degree-reference-heading span{color:var(--muted);font-size:.84rem;font-weight:800;line-height:1.45}.degree-reference-list{grid-template-columns:repeat(auto-fit,minmax(185px,1fr));gap:8px;min-width:0;display:grid}.degree-reference-card{border:1px solid var(--line);background:var(--surface);border-radius:8px;gap:6px;min-width:0;min-height:104px;padding:10px;display:grid}.degree-reference-card.in-scale{border-color:var(--active);background:color-mix(in srgb, var(--active-soft) 78%, var(--surface))}.degree-reference-token{justify-content:space-between;align-items:center;gap:8px;min-width:0;display:flex}.degree-reference-token strong{background:var(--ink);min-width:34px;min-height:28px;color:var(--app-bg);border-radius:999px;justify-content:center;align-items:center;padding:0 7px;font-size:.78rem;font-weight:900;display:inline-flex}.degree-reference-card.in-scale .degree-reference-token strong{background:var(--active)}.degree-reference-token span{min-width:0;color:var(--blue);overflow-wrap:anywhere;text-align:right;font-size:.9rem;font-weight:900}.degree-reference-card p{color:var(--muted);margin:0;font-size:.78rem;font-weight:800;line-height:1.35}.degree-reference-card em{color:var(--gold);font-size:.72rem;font-style:normal;font-weight:900}.practice-drill-panel{background:var(--paper);min-width:0;box-shadow:var(--shadow-sm);border:0;border-radius:8px;gap:10px;padding:16px;display:grid}.drill-category-tabs{grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;display:grid}.drill-category-tab,.drill-card{border:1px solid var(--line);background:var(--surface);color:var(--ink);border-radius:8px;font-weight:900}.drill-category-tab{min-height:38px;padding:0 8px;font-size:.8rem}.drill-rail-list{grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:8px;min-width:0;display:grid}.drill-card{text-align:left;gap:5px;min-height:70px;padding:10px 12px;display:grid}.drill-card strong{font-size:.9rem;font-weight:900}.drill-card span{color:var(--muted);font-size:.76rem;font-weight:800;line-height:1.35}.drill-category-tab.active,.drill-card.active{border-color:var(--active);background:var(--active-soft);color:var(--active)}.drill-card.active span{color:color-mix(in srgb, var(--active) 72%, var(--muted))}.drill-guide-panel{background:var(--surface-soft);box-shadow:var(--shadow-sm);border:0;border-radius:8px;grid-template-columns:minmax(200px,.52fr) minmax(280px,1fr);align-items:start;gap:14px;padding:18px;display:grid}.drill-guide-main{gap:6px;display:grid}.drill-guide-main strong{color:var(--ink);font-size:1rem;font-weight:900}.drill-guide-main span,.drill-guide-panel li{color:var(--muted);font-size:.84rem;font-weight:800;line-height:1.45}.drill-guide-panel ol{gap:5px;margin:0;padding-left:22px;display:grid}.practice-controls{grid-template-columns:minmax(180px,1.3fr) minmax(100px,.6fr) minmax(110px,.6fr)}.practice-bpm-panel{background:var(--surface-soft);min-width:0;max-width:100%;box-shadow:var(--shadow-sm);border:0;border-radius:8px;grid-template-columns:minmax(96px,.3fr) minmax(180px,1fr) minmax(470px,auto);align-items:end;gap:10px;padding:14px;display:grid}.bpm-readout{gap:2px;display:grid}.bpm-readout span{color:var(--muted);text-transform:uppercase;font-size:.72rem;font-weight:900}.bpm-readout strong{color:var(--active);font-size:2.2rem;line-height:1}.bpm-controls{grid-template-columns:38px minmax(120px,1fr) 38px;align-items:center;gap:8px;display:grid}.bpm-controls button,.practice-switch-grid button{border:1px solid var(--line);background:var(--surface);min-height:38px;color:var(--ink);border-radius:8px;font-weight:900}.bpm-controls button{place-items:center;display:grid}.bpm-controls input[type=range]{min-height:38px;accent-color:var(--active);padding:0}.practice-switch-grid{grid-template-columns:repeat(2,minmax(118px,140px)) repeat(2,minmax(88px,auto));justify-content:start;align-items:end;gap:8px;min-width:0;display:grid}.practice-switch-grid label,.practice-switch-grid select{min-width:0}.practice-switch-grid button.active{border-color:var(--active);background:var(--active);color:var(--app-bg)}.practice-session-bar{grid-template-columns:minmax(150px,auto) minmax(130px,auto) minmax(220px,1fr);align-items:center;gap:10px;display:grid}.practice-session-bar-sentinel{pointer-events:none;width:100%;height:1px}.practice-session-bar.is-floating{bottom:calc(env(safe-area-inset-bottom) + 18px);z-index:90;border:1px solid var(--line);background:color-mix(in srgb, var(--paper) 96%, transparent);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);width:min(100% - 32px,860px);box-shadow:var(--shadow);border-radius:10px;padding:8px;position:fixed;left:50%;transform:translate(-50%)}.practice-play-button,.practice-stop-button{transition:transform .14s var(--ease-out)}.practice-play-button:active:not(:disabled),.practice-stop-button:active:not(:disabled){transform:scale(.97)}@container practice-workspace (width<=920px){.practice-bpm-panel{grid-template-columns:minmax(94px,.28fr) minmax(180px,1fr)}.practice-switch-grid{grid-column:1/-1;grid-template-columns:repeat(2,minmax(118px,140px)) repeat(2,minmax(86px,auto))}}@media (width>=681px){.practice-mode-lab{padding-bottom:96px}}.practice-bottom-bpm{border:1px solid var(--line);background:var(--surface-soft);border-radius:8px;grid-template-columns:minmax(52px,auto) minmax(72px,94px) 34px minmax(92px,1fr) 34px;align-items:center;gap:8px;min-width:0;min-height:48px;padding:6px 8px;display:grid}.practice-bottom-bpm-readout{gap:1px;min-width:0;display:grid}.practice-bottom-bpm-readout span{color:var(--muted);text-transform:uppercase;white-space:nowrap;font-size:.68rem;font-weight:900}.practice-bottom-bpm-readout strong{color:var(--active);font-size:1.35rem;line-height:1}.practice-bottom-subdivision{gap:1px;min-width:0;display:grid}.practice-bottom-subdivision span{color:var(--muted);white-space:nowrap;font-size:.62rem;font-weight:900}.practice-bottom-subdivision select{border-radius:7px;width:100%;min-width:0;height:34px;padding:0 24px 0 8px;font-size:.74rem;font-weight:900}.practice-bottom-bpm button{border:1px solid var(--line);background:var(--surface);width:34px;height:34px;color:var(--ink);border-radius:8px;place-items:center;display:grid}.practice-bottom-bpm input[type=range]{min-width:0;min-height:34px;accent-color:var(--active);padding:0}.editor-and-panel{gap:14px;min-height:0;display:grid}.score-header,.print-score{display:none}.tab-manuscript{scroll-behavior:smooth;scrollbar-gutter:stable both-edges;overscroll-behavior-x:contain;border:1px solid var(--line);border-radius:var(--radius-md);background:var(--paper);min-width:0;box-shadow:var(--shadow);overflow:auto}.tab-manuscript::-webkit-scrollbar{width:12px;height:12px}.tab-manuscript::-webkit-scrollbar-track{background:color-mix(in srgb, var(--paper) 82%, var(--line))}.tab-manuscript::-webkit-scrollbar-thumb{border:3px solid var(--paper);background:color-mix(in srgb, var(--active) 54%, var(--line));border-radius:999px}.tab-line-block{border-bottom:1px solid var(--line);width:max-content;min-width:100%;padding:0 14px 18px}.tab-line-block:last-child{border-bottom:0}.line-heading{z-index:3;background:var(--paper);min-height:40px;color:var(--muted);align-items:center;gap:10px;padding:8px 0;font-size:.78rem;font-weight:900;display:inline-flex;position:sticky;left:0}.tab-source-badge{border:1px solid color-mix(in srgb, var(--coral) 34%, var(--line));background:var(--coral-soft);color:color-mix(in srgb, var(--coral) 76%, var(--ink));border-radius:999px;padding:4px 7px;font-size:.64rem}.line-heading button{border:1px solid var(--line);background:var(--surface);min-height:30px;color:var(--ink);border-radius:8px;font-weight:900}.active-line .line-select-button{border-color:var(--active);background:var(--active-soft);color:var(--active)}.line-actions{gap:5px;display:inline-flex}.line-heading .line-icon-button{place-items:center;width:30px;padding:0;display:grid}.line-heading .line-delete-button{color:var(--danger)}.tab-editor{overflow:visible}.chord-layer,.tab-row,.note-layer{grid-template-columns:var(--string-label-width) repeat(24, var(--tab-column-width));width:max-content;min-width:100%;display:grid}.chord-layer{z-index:2;border-bottom:1px solid var(--line);background:var(--paper);position:sticky;top:0}.string-label-space,.string-label{z-index:3;border-right:1px solid var(--line);background:var(--paper);min-height:42px;position:sticky;left:0}.string-label{color:var(--muted);place-items:center;font-family:IBM Plex Mono,SFMono-Regular,Menlo,Consolas,monospace;font-weight:900;display:grid}.layer-label{place-items:center;font-size:.62rem;font-weight:900;display:grid}.chord-label-grid{color:var(--active)}.note-label-grid{background:var(--surface-soft);color:var(--blue)}.chord-layer button,.note-layer button{border:0;border-right:1px solid var(--line);min-height:42px;color:var(--active);text-overflow:ellipsis;white-space:nowrap;background:0 0;font-size:.78rem;font-weight:900;transition:none;overflow:hidden}.chord-layer button.selected,.note-layer button.selected{background:var(--coral-soft);box-shadow:inset 2px 0 0 color-mix(in srgb, var(--coral) 54%, transparent), inset -2px 0 0 color-mix(in srgb, var(--coral) 54%, transparent)}.tab-row{background-image:linear-gradient(to right, transparent 43px, var(--ink) 44px, transparent 44px)}.tab-cell{min-width:var(--tab-column-width);border:0;border-right:1px solid var(--line);background:linear-gradient(to bottom, transparent 20px, var(--ink) 20px, var(--ink) 22px, transparent 22px), transparent;height:44px;color:var(--coral);font-family:IBM Plex Mono,SFMono-Regular,Menlo,Consolas,monospace;font-size:.92rem;font-weight:900;transition:none;position:relative}.tab-cell span{max-width:calc(var(--tab-column-width) - 8px);background:var(--paper);text-overflow:ellipsis;white-space:nowrap;min-width:20px;padding:1px 3px;overflow:hidden}.tab-cell.column-selected{background:linear-gradient(to bottom, transparent 20px, var(--ink) 20px, var(--ink) 22px, transparent 22px), var(--coral-soft);box-shadow:inset 2px 0 0 color-mix(in srgb, var(--coral) 54%, transparent), inset -2px 0 0 color-mix(in srgb, var(--coral) 54%, transparent)}@media (hover:hover) and (pointer:fine){.tab-cell:hover{background:linear-gradient(to bottom, transparent 20px, var(--ink) 20px, var(--ink) 22px, transparent 22px), var(--coral-soft);box-shadow:inset 2px 0 0 color-mix(in srgb, var(--coral) 54%, transparent), inset -2px 0 0 color-mix(in srgb, var(--coral) 54%, transparent)}}.tab-cell.active{outline:3px solid color-mix(in srgb, var(--coral) 74%, transparent);outline-offset:-3px}.tab-cell.drafting span{border:1px dashed var(--coral);color:var(--coral)}.note-layer{border-top:1px solid var(--line);background:var(--surface-soft)}.note-layer button{color:var(--blue);white-space:normal;flex-direction:column;justify-content:flex-start;align-items:center;gap:2px;min-height:74px;padding:6px 2px;line-height:1.15;display:flex}.note-layer button span{text-overflow:ellipsis;max-width:100%;display:block;overflow:hidden}.chord-suggestion-bar{border:1px solid var(--line);background:color-mix(in srgb, var(--surface) 82%, transparent);min-width:0;min-height:48px;box-shadow:var(--shadow-sm);border-radius:10px;align-items:center;gap:10px;padding:7px 10px;display:flex}.chord-suggestion-bar>strong{color:var(--muted);white-space:nowrap;flex:none;font-size:.76rem;font-weight:900}.empty-candidate{border:1px solid var(--line);background:var(--surface-soft);min-height:32px;color:var(--muted);border-radius:8px;align-items:center;padding:0 9px;font-size:.75rem;font-weight:800;display:inline-flex}.candidate-list{flex-wrap:wrap;gap:6px;min-width:0;display:flex}.candidate-list button{border:1px solid var(--line);background:var(--panel);max-width:100%;min-height:32px;color:var(--ink);overflow-wrap:anywhere;text-align:center;transition:transform .14s var(--ease-out), border-color .14s ease, background-color .14s ease;border-radius:8px;padding:0 10px;font-weight:900}.candidate-list button:active{transform:scale(.97)}.candidate-list button.active{border-color:var(--active);background:var(--active);color:var(--app-bg)}.json-preview{gap:10px;min-width:0;display:grid}.json-preview div{color:var(--muted);align-items:center;gap:8px;font-weight:900;display:flex}.json-preview pre{border:1px solid var(--line);color:#e2e8f0;background:#0f172a;border-radius:8px;max-height:260px;margin:0;padding:12px;font-size:.76rem;line-height:1.5;overflow:auto}@media (width<=1280px){.toolbar{grid-template-columns:minmax(0,1fr)}.tool-groups{flex-wrap:wrap;justify-content:flex-start;min-width:0;max-width:100%}.icon-group{flex-wrap:wrap;max-width:100%}.practice-mode-lab .practice-drill-panel{gap:8px;padding:10px}.practice-mode-lab .drill-rail-list{gap:7px}.practice-mode-lab .drill-card{min-height:54px;padding:9px 10px}.practice-mode-lab .drill-card span{display:none}.practice-session-bar{grid-template-columns:minmax(126px,.75fr) minmax(112px,.65fr) minmax(236px,1.6fr);gap:8px}.practice-bottom-bpm{grid-template-columns:minmax(44px,auto) minmax(68px,84px) 32px minmax(0,1fr) 32px;gap:6px;padding:6px}.practice-bpm-panel{grid-template-columns:minmax(94px,.28fr) minmax(180px,1fr)}.practice-switch-grid{grid-column:1/-1;grid-template-columns:repeat(2,minmax(118px,140px)) repeat(2,minmax(86px,auto))}}@media (width<=1080px){.app-shell{grid-template-columns:1fr}.workspace{padding-top:20px}.dashboard-intro,.workspace-card{grid-template-columns:1fr}.workspace-card dl,.workspace-card-list .workspace-card dl{grid-template-columns:repeat(3,minmax(0,1fr))}.editor-and-panel{grid-template-columns:1fr}.learning-toolbar{grid-template-columns:minmax(0,1fr)}.drill-guide-panel,.practice-bpm-panel{grid-template-columns:1fr}.practice-session-bar{grid-template-columns:repeat(2,minmax(0,1fr))}.practice-bottom-bpm{grid-column:1/-1}}@media (width<=680px){:root{--tab-column-width:58px}.workspace{padding:12px 12px 88px;padding-bottom:max(196px, calc(176px + env(safe-area-inset-bottom)))}.song-practice-context{grid-template-columns:minmax(0,1fr);gap:10px;padding:12px}.song-practice-context button{width:100%;min-height:44px}.publish-version-trigger{right:14px;bottom:calc(92px + env(safe-area-inset-bottom));z-index:65;min-height:46px;box-shadow:0 14px 34px color-mix(in srgb, var(--active) 28%, transparent);border-radius:14px;padding-inline:16px;position:fixed}.practice-workspace .toolbar{gap:10px;padding:10px}.practice-workspace .learning-meta-summary{gap:5px;min-height:0}.practice-workspace .learning-meta-summary strong{text-overflow:ellipsis;white-space:nowrap;font-size:.92rem;overflow:hidden}.practice-workspace .learning-meta-chips{gap:4px}.practice-workspace .learning-meta-chips span{min-height:24px;padding:0 7px;font-size:.7rem}.login-shell{padding:calc(12px + var(--safe-area-inset-top,env(safe-area-inset-top))) 12px calc(12px + var(--safe-area-inset-bottom,env(safe-area-inset-bottom)))}.dashboard-shell{padding-bottom:calc(36px + var(--safe-area-inset-bottom,env(safe-area-inset-bottom)))}.dashboard-main{padding:18px 12px 0}.workspace-card-list{grid-template-columns:1fr}.dashboard-topbar,.board-toolbar{flex-direction:column;align-items:stretch}.dashboard-topbar .preference-controls{width:100%}.dashboard-metrics,.workspace-card dl,.workspace-card-list .workspace-card dl{grid-template-columns:1fr}.workspace-card-actions{flex-direction:column;align-items:stretch}.dashboard-action,.login-google-button,.login-try-button,.google-identity-button,.workspace-open-button{width:100%}.login-panel{padding:20px}.toolbar{grid-template-columns:1fr;align-items:flex-start}.practice-workspace .toolbar{grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:8px;padding:8px 10px}.practice-workspace .toolbar-kicker{margin-bottom:2px;font-size:.68rem}.practice-workspace .learning-meta-summary{gap:2px}.practice-workspace .learning-meta-chips{display:none}.practice-workspace .tool-groups{justify-content:flex-end}.practice-workspace .icon-group{padding:3px}.tool-groups{flex-wrap:wrap;justify-content:flex-start;width:100%;min-width:0;padding-bottom:3px;overflow-x:visible}.chord-suggestion-bar{gap:8px;min-height:44px;overflow:hidden}.chord-suggestion-bar .candidate-list{scrollbar-width:thin;flex-wrap:nowrap;flex:auto;padding-bottom:2px;overflow-x:auto}.chord-suggestion-bar .candidate-list>*{flex:none}.workspace-context-tools{flex-wrap:wrap;width:100%;position:relative}.workspace-tool-popover{position:static}.workspace-tool-popover-panel{width:min(340px,100%);top:calc(100% + 8px);left:0;right:auto}.icon-group{flex-wrap:nowrap}.icon-group button,.icon-group button.shortcut-button{width:44px;min-width:44px;height:44px}.icon-group button.shortcut-button kbd{display:none}.icon-group button.shortcut-button.save-button{width:auto;min-width:76px;padding:0 10px}.save-button span{white-space:nowrap}.column-nav-button{width:44px;min-height:44px}.custom-tuning{grid-template-columns:1fr 1fr}.scale-note-strip,.drill-rail-list,.degree-reference-list{scrollbar-width:thin;flex-wrap:nowrap;padding-bottom:4px;overflow-x:auto}.drill-rail-list,.degree-reference-list{display:flex}.scale-note-chip,.drill-card,.degree-reference-card{flex:none}.drill-card{width:min(244px,78vw)}.degree-reference-card{width:min(218px,72vw)}.drill-category-tab{min-height:42px;font-size:.76rem}.learning-controls,.practice-controls{grid-template-columns:1fr}.practice-mode-lab{gap:10px}.practice-mode-lab .practice-lab{display:contents}.practice-mode-lab .learning-toolbar{order:1;gap:9px;padding:10px}.practice-mode-lab .practice-drill-panel{order:2}.practice-mode-lab .practice-controls{order:3}.practice-mode-lab .practice-bpm-panel{order:4}.practice-mode-lab .practice-fretboard-board{order:5}.practice-mode-lab .drill-guide-panel{order:6}.practice-mode-lab .degree-reference-panel{order:7}.practice-mode-lab .practice-session-bar{order:8}.practice-mode-lab .practice-drill-panel{gap:8px;padding:8px}.practice-mode-lab .drill-category-tabs{gap:6px}.practice-mode-lab .drill-category-tab{min-height:36px;padding:0 5px;font-size:.72rem}.practice-mode-lab .drill-card{width:min(188px,58vw);min-height:48px;padding:8px 9px}.practice-mode-lab .drill-card span{display:none}.practice-mode-lab .practice-controls{border:1px solid var(--line);background:color-mix(in srgb, var(--surface) 82%, transparent);border-radius:8px;grid-template-columns:minmax(0,1fr) minmax(92px,.72fr);gap:8px;padding:9px 10px}.practice-mode-lab .practice-controls label:first-child{grid-column:1/-1}.practice-mode-lab .practice-controls input,.practice-mode-lab .practice-controls select{min-height:36px}.practice-mode-lab .drill-guide-panel{gap:6px;padding:9px 10px}.practice-mode-lab .drill-guide-panel ol{display:none}.practice-mode-lab .drill-guide-main{gap:3px}.practice-mode-lab .drill-guide-main strong{font-size:.9rem}.practice-mode-lab .drill-guide-main span{font-size:.76rem;line-height:1.35}.practice-mode-lab .learning-toolbar .toolbar-kicker{margin-bottom:4px}.practice-mode-lab .scale-note-chip{min-height:36px;padding:0 10px}.practice-mode-lab .learning-controls{grid-template-columns:1fr 1fr;gap:8px}.practice-mode-lab .learning-controls label{min-width:0}.practice-mode-lab .learning-controls .note-name-toggle{min-height:36px;padding:0 8px}.practice-mode-lab .degree-reference-panel{padding:10px}.practice-mode-lab .degree-reference-heading span{display:none}.practice-switch-grid,.practice-session-bar{grid-template-columns:1fr}.practice-bpm-panel>.bpm-readout,.practice-bpm-panel>.bpm-controls{display:none}.practice-switch-grid{grid-column:1/-1;grid-template-columns:1fr 1fr}.practice-session-bar{right:10px;bottom:calc(env(safe-area-inset-bottom) + 10px);z-index:90;border:1px solid var(--line);background:color-mix(in srgb, var(--paper) 96%, transparent);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);width:auto;box-shadow:var(--shadow);border-radius:8px;grid-template-columns:repeat(2,minmax(0,1fr));padding:8px;position:fixed;left:10px;transform:none}.practice-bottom-bpm{order:1;grid-column:1/-1;grid-template-columns:minmax(42px,auto) minmax(64px,78px) 34px minmax(0,1fr) 34px;min-height:42px;padding:5px 7px}.practice-play-button{order:2;grid-column:1/2}.practice-stop-button{order:2;grid-column:2/3}.practice-play-button,.practice-stop-button{white-space:nowrap;min-width:0;min-height:44px;padding-left:6px;padding-right:6px;font-size:.82rem}.practice-play-button span,.practice-stop-button span{text-overflow:ellipsis;min-width:0;overflow:hidden}.fretboard-row{--fret-column-width:52px;--fretboard-content-width:1300px}.practice-fretboard-board .fretboard-row{--fret-column-width:44px;--fretboard-content-width:1100px}.practice-fretboard-board .fretboard-fret-label,.practice-fretboard-board .fretboard-cell{min-height:44px}.practice-fretboard-board .fretboard-note-marker{min-width:34px;padding:2px 4px}.practice-fretboard-board .fretboard-note-marker strong{min-width:16px;min-height:16px;font-size:.64rem}.practice-fretboard-board .fretboard-note-marker span{font-size:.72rem}.notation-grid{grid-template-columns:1fr 1fr}.technique-palette{scrollbar-width:thin;flex:100%;width:100%;min-height:54px;display:flex;overflow-x:auto}.technique-palette button{flex:0 0 44px;width:44px;min-width:44px;height:44px}}@media print{@page{size:landscape;margin:0}.app-global-header,.toolbar,.control-strip,.custom-tuning,.chord-suggestion-bar{display:none}.app-shell,.workspace{background:#fff;min-height:auto;display:block}.app-shell{padding:0}.workspace{padding:3mm 5mm}.score-header{color:#111;break-after:avoid;border-bottom:1px solid #e2e8f0;margin:0 0 2mm;padding-bottom:1.5mm;display:block}.score-header h2{text-align:center;margin:0;font-size:14pt;line-height:1.15}.score-credits{justify-content:flex-end;gap:.6mm;margin-top:1mm;font-size:6.5pt;line-height:1.1;display:grid}.score-credits span{grid-template-columns:7mm max-content;justify-content:end;gap:2mm;display:grid}.score-credits strong{font-weight:900}.editor-and-panel{display:none}.print-score{color:#111;display:block}.print-line-block{display:contents}.print-tab-group{break-inside:avoid;page-break-inside:avoid;width:100%;min-height:56mm;margin:0 0 2mm}.print-line-heading{align-items:center;gap:3mm;min-height:4mm;font-size:7pt;font-weight:900;display:flex}.print-line-heading span{color:#64748b;font-weight:800}.print-chord-layer,.print-tab-row,.print-note-layer{grid-template-columns:7mm repeat(12,minmax(0,1fr));width:100%;display:grid}.print-string-label-space,.print-string-label{border-right:.2mm solid #cbd5e1}.print-string-label-space,.print-chord-cell{min-height:4mm}.print-string-label,.print-tab-cell{min-height:6mm}.print-string-label{color:#64748b;place-items:center;font-family:Courier New,monospace;font-size:7pt;font-weight:900;display:grid}.print-chord-cell,.print-note-cell{color:#0b4171;text-align:center;border-right:.2mm solid #cbd5e1;place-items:center;min-width:0;padding:0 .8mm;font-size:7.5pt;font-weight:900;line-height:1.1;display:grid;overflow:hidden}.print-tab-cell{color:#b4233d;border-right:.2mm solid #cbd5e1;place-items:center;min-width:0;font-family:Courier New,monospace;font-size:8.5pt;font-weight:900;display:grid;position:relative}.print-tab-cell:before{content:"";z-index:1;border-top:.25mm solid #111;position:absolute;top:50%;left:0;right:0}.print-tab-cell span{z-index:2;text-overflow:ellipsis;white-space:nowrap;background:#fff;max-width:calc(100% - 1mm);padding:0 .6mm;position:relative;overflow:hidden}.print-note-layer{background:#f8fafc;border-top:.2mm solid #cbd5e1}.print-note-cell{color:#2563eb;white-space:normal;align-content:start;min-height:9mm;padding:.8mm .5mm;font-size:7pt}.print-note-cell span{display:block}}