:root{color-scheme:dark;--gold:#f6cd9b;--surface:#171a21;--muted:#b8b8b8}*{box-sizing:border-box}body{margin:0;background:#0f1115;color:#fff;font:15px/1.6 "Noto Sans TC","Microsoft JhengHei",sans-serif}a{color:var(--gold)}button,input,select{font:inherit}button,a,input,select{touch-action:manipulation}button{padding:9px 14px;min-height:44px;border:1px solid #3a414c;border-radius:9px;background:#101319;color:#fff;cursor:pointer;white-space:nowrap}button:hover{border-color:var(--gold)}button:disabled{opacity:.45;cursor:not-allowed}.primary{background:var(--gold);color:#0f1115;border-color:var(--gold);font-weight:800}.primary:hover{background:#ffd9a8}input,select{min-height:44px;border:1px solid #535762;border-radius:7px;background:#0f1115;color:#fff;padding:8px 10px;min-width:0}input[type=range]{padding:0;min-height:24px;accent-color:var(--gold)}input[type=checkbox]{width:18px;height:18px;min-height:18px;margin:0;accent-color:var(--gold)}:focus-visible{outline:2px solid #ffd9a8;outline-offset:3px}::selection{background:var(--gold);color:#0f1115}[hidden]{display:none!important}.site-head{display:flex;align-items:center;gap:16px;max-width:1200px;margin:auto;padding:18px 24px;border-bottom:1px solid #30353e}.brand{font-size:23px;font-weight:900;text-decoration:none}.site-head>span{color:var(--muted);font-size:13px}.site-head>a:last-child{margin-left:auto}main{max-width:1152px;margin:auto;padding:28px 24px 0}h1{font-size:32px;line-height:1.25;margin:0 0 10px}h2{font-size:21px;margin:0 0 8px}p{margin:0 0 14px;color:var(--muted)}.heading{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:16px}.account{color:var(--gold);font-weight:700}.import>label{display:block;margin-bottom:6px}.import>div{display:flex;gap:10px}.import input{flex:1}.import button{padding-inline:24px}#message{min-height:26px;margin:12px 0 18px;color:#ded7cc}#message.error{color:#ffb5a7}#player-shell{background:var(--surface);border-radius:12px}.video-stage{overflow:hidden;border-radius:12px 12px 0 0}.video-stage{position:relative;aspect-ratio:16/9;min-height:200px;background:#060709}.video-stage iframe,#video-mount{width:100%;height:100%;position:absolute;inset:0;border:0}#video-placeholder{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;flex-direction:column;padding:25px;text-align:center}#video-placeholder h2{font-size:24px}.play-mark{font-size:65px;line-height:1.3;color:var(--gold);margin-bottom:10px}#video-caption{display:flex;justify-content:space-between;gap:14px;padding:12px 16px}#video-title{overflow-wrap:anywhere}#play-state{color:var(--gold);flex-shrink:0}fieldset{margin:0;padding:12px 16px;border:0;min-width:0}.transport,.loop-row,.speed-row,.progress-row,#progress-fields{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.transport .volume{margin-left:auto;display:flex;gap:8px;align-items:center}.volume input{width:100px}#clock{font-variant-numeric:tabular-nums;font-size:13px}.seek-label{display:flex;align-items:center;flex:1 1 100px;min-width:60px;max-width:280px;margin:0}.seek-label input{width:100%;margin:0}/* Match the established score player's upward-opening control menu. */
.control-anchor{position:relative}
#controls-toggle[aria-expanded=true]{background:#fffaf2;color:#0f1115;border-color:#fffaf2}
#controls{position:absolute;z-index:80;left:12px;bottom:calc(100% + 6px);width:min(680px,calc(100% - 24px));max-height:calc(100dvh - 140px);overflow-y:auto;overscroll-behavior:contain;padding:10px;background:rgba(15,17,21,.98);border:1px solid rgba(246,205,155,.38);border-radius:11px;box-shadow:0 18px 42px rgba(0,0,0,.48);font-size:13px}
#controls button{min-height:38px;padding:5px 8px}
#controls input:not([type=checkbox]):not([type=range]),#controls select{min-height:36px;padding:5px 7px}
.loop-row,.speed-row{padding:7px;gap:7px;background:#171a21;border:1px solid #363c48;border-radius:9px}
.loop-row strong{color:var(--muted);font-size:12px;white-space:nowrap}
.loop-row>input{width:65px;text-align:center;font-variant-numeric:tabular-nums;border-color:var(--gold)}
.loop-row>select{width:88px;color:var(--gold);font-size:12px;border-color:#363c48}
.check{display:inline-flex;gap:7px;align-items:center;white-space:nowrap;min-height:28px}
#controls input[type=checkbox]{width:16px;height:16px;min-height:16px}
.hint{font-size:13px;color:var(--muted)}
#loop-status{display:none}
#loop-status:empty{display:none}
#custom-length-label{display:flex;align-items:center;gap:8px;margin:8px 7px}#custom-length{width:85px}
.loop-row #custom-length-label{display:inline-flex;gap:4px;margin:0;color:var(--gold)}.loop-row #custom-length{width:68px;text-align:center}
#bpm-row{display:flex;align-items:center;gap:8px;flex-wrap:wrap;color:var(--gold);margin:8px 7px}#bpm{width:100px}
#bpm-row.bpm-required{padding:8px;border:1px solid #e78d86;border-radius:9px;background:#302024;color:#ffd1cb}#bpm-row.bpm-required #bpm{border-color:#ffaaa3;outline:2px solid rgba(231,141,134,.3)}#quick-bpm-hint.bpm-error{color:#ffd1cb}
.progress-row{margin:8px 7px;gap:12px;font-weight:700}
#controls .mobile-detail-toggle{display:none}
.mobile-touch #controls .desktop-detail-label{display:none}
.mobile-touch #loop-status{display:none}
.mobile-touch #controls .mobile-detail-toggle{display:inline-flex;align-items:center;min-height:44px;padding:5px 4px;border:0;background:transparent;font-weight:700}
.mobile-touch #controls .mobile-detail-toggle[aria-expanded=true]{color:var(--gold)}
.mobile-touch #controls .progress-row .check{min-height:44px}
.mobile-touch #controls:not(.count-in-detail-open) #bpm-row,.mobile-touch #controls:not(.count-in-detail-open) #quick-bpm-hint,.mobile-touch #controls:not(.progressive-detail-open) #progress-fields,.mobile-touch #controls:not(.progressive-detail-open) #progress-status{display:none!important}
#progress-status{color:var(--gold);font-size:12px}
#progress-fields{gap:14px;margin:8px 7px 14px;justify-content:flex-start;align-items:start}
#progress-fields>label,#progress-fields>.fixed-increment{display:flex;flex-direction:column;align-items:flex-start;gap:4px;color:var(--muted)}
.field-value{display:flex;align-items:center;gap:5px;color:var(--muted)}
#progress-fields input{width:58px}#progress-fields select{width:58px}#progress-fields output{display:inline-flex;align-items:center;min-height:36px;width:56px;padding:5px 7px;color:white;font-weight:700}
.speed-row{flex-wrap:nowrap}
.speed-row>label{color:var(--muted);font-size:12px}
.speed-row>input{flex:1;min-width:40px;width:0}
.speed-row output{white-space:nowrap;font-variant-numeric:tabular-nums}
#rate-value{color:var(--muted);font-size:12px}#rate-bpm{color:var(--gold);font-size:16px;font-weight:800}
.quick-actions{display:flex;justify-content:flex-start;align-items:center;gap:8px;flex-wrap:wrap;margin:8px 0 0}#controls .quick-actions button{min-width:64px;padding:5px 12px;font-size:13px;font-weight:700}#controls .quick-actions #quick-add{min-width:88px}.quick-actions #quick-enable{border-color:#4d9d6c;color:#b9edca}.quick-actions #quick-disable{border-color:#a35d5d;color:#ffc1bd}.quick-actions #modify-segment{background:#d88942;border-color:#d88942;color:#0f1115}.quick-actions #modify-segment:hover{background:#eea35e;border-color:#eea35e}.quick-actions #quick-add{background:var(--gold);border-color:var(--gold);color:#0f1115}.quick-actions #quick-add:hover{background:#ffd9a8}.quick-actions #quick-enable[aria-pressed=true]{background:#21573a;color:#fff}.quick-actions #quick-disable[aria-pressed=true]{background:#392225;color:#ffd2ce}#controls-toggle.quick-enabled,#controls-toggle.quick-enabled[aria-expanded=true]{background:#287747;border-color:#73d898;color:#fff;box-shadow:0 4px 16px rgba(74,194,115,.28)}#quick-bpm-hint{margin:4px 7px 8px;color:#f6cd9b}
#controls .loop-row .seek-jump{min-width:58px;border-color:#8c7155;color:var(--gold)}
.mobile-touch #controls .loop-row .seek-jump{min-height:44px}
.quick-actions{position:relative}
#controls .quick-actions #quick-save{border-color:#8c7155;color:var(--gold)}
#controls .quick-actions #quick-save-new{border-color:#535762}
#quick-save-status{position:absolute;left:0;bottom:calc(100% + 8px);z-index:3;max-width:100%;padding:7px 10px;border:1px solid var(--gold);border-radius:8px;background:#171a21;color:var(--gold);font-size:13px;font-weight:700;white-space:nowrap;box-shadow:0 8px 20px #0008}
.import #url{flex:1 1 240px}
.import .import-bpm{display:flex;align-items:center;gap:8px;flex:0 0 auto;margin:0;color:var(--muted);font-size:13px;white-space:nowrap}
.import .import-bpm input{flex:0 0 auto;width:94px;font-size:15px;font-variant-numeric:tabular-nums}
@media(max-width:600px){.import>div{flex-wrap:nowrap}.import #url{flex:1 1 0;min-width:0;padding-inline:7px}.import .import-bpm{gap:3px;font-size:12px}.import .import-bpm input{width:54px;padding-inline:4px}.import #import-button{margin-left:0;flex:0 0 auto;padding-inline:6px;font-size:12px}}
#save-section,.library{margin-top:30px;border-top:1px solid #353b45;padding-top:24px}#save-form{display:flex;align-items:end;gap:12px;flex-wrap:wrap}#save-form>label{display:grid;gap:6px;flex:1;min-width:180px}#save-form input{width:100%}#editing{margin-top:8px}.section-head{display:flex;align-items:center;justify-content:space-between}.segments{margin-top:18px}.segment,.video-row{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:16px 0;border-bottom:1px solid #30353e}.segment>div:first-child,.video-row>div:first-child{min-width:0}.segment strong,.video-row strong{display:block;overflow-wrap:anywhere}.segment small,.video-row small{display:block;color:var(--muted)}.segment nav{display:flex;gap:8px;flex-wrap:wrap}.segment .locked{color:var(--gold)}.library>button,#segments-more{margin-top:14px}footer{padding:32px 0;text-align:center;color:var(--muted);font-size:13px}dialog{width:440px;max-width:calc(100vw - 32px);border:1px solid #d9a96a;border-radius:16px;padding:24px;background:#101319;color:#fff}dialog::backdrop{background:#000a}dialog p{white-space:pre-line;line-height:1.8}#notice-actions{display:flex;gap:10px;justify-content:flex-end;flex-wrap:wrap}#notice-actions a{display:inline-flex;align-items:center;padding:9px 14px;min-height:44px;text-decoration:none;border:1px solid #d9a96a;border-radius:9px}.skip,.sr-only{position:absolute;left:-10000px}.skip:focus{left:10px;top:10px;background:#111;z-index:10}#player-shell:fullscreen,#player-shell.fullscreen-fallback{display:flex;flex-direction:column;width:100%;height:100dvh;max-height:100dvh;background:#060709;overflow:hidden;border-radius:0;padding:env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left)}
#player-shell:fullscreen .video-stage,#player-shell.fullscreen-fallback .video-stage{flex:1 1 0;min-height:0;height:auto;aspect-ratio:auto;border-radius:0}
#player-shell:fullscreen #video-caption,#player-shell.fullscreen-fallback #video-caption{display:none}
#player-shell:fullscreen .control-anchor,#player-shell.fullscreen-fallback .control-anchor{flex:0 0 auto;background:#171a21}
#player-shell:fullscreen #transport,#player-shell.fullscreen-fallback #transport{padding:8px}
#player-shell.fullscreen-fallback{position:fixed;inset:var(--practice-viewport-top,0px) 0 auto 0;z-index:200;height:var(--practice-viewport-height,100dvh);max-height:var(--practice-viewport-height,100dvh)}
body:has(.fullscreen-fallback){overflow:hidden}*{scrollbar-color:#6e6253 #171a21}button:active{transform:translateY(1px)}
.practice-fullscreen-root,body.practice-fullscreen{overflow:hidden;overscroll-behavior:none}
@media(max-width:600px){main{padding:22px 12px 0}.site-head{padding:12px}.brand{font-size:20px}.site-head>span{font-size:11px}.heading{display:block}h1{font-size:27px}.heading p{margin-bottom:8px}.import>div{gap:6px}.import button{padding-inline:12px}.import input{font-size:16px}.video-stage{min-height:200px}fieldset{padding:12px}.transport .volume{margin-left:0;flex:1}.volume input{width:70px}#clock{margin-left:auto}#video-caption{display:block}#play-state{display:block;font-size:13px}#controls{left:8px;width:calc(100% - 16px);padding:7px}.loop-row{gap:6px}.loop-row>input{width:62px}.loop-row>select{width:85px}.loop-row .check{margin-left:0}#controls button{min-height:44px}#controls input:not([type=checkbox]):not([type=range]),#controls select{min-height:40px}.speed-row{flex-wrap:wrap;gap:6px}.speed-row>label{display:none}.speed-row>input{min-width:50px}.speed-row button{padding-inline:6px}#rate-bpm{font-size:13px}#progress-fields{gap:10px}#progress-fields input,#progress-fields select{width:52px}#progress-fields output{width:38px}
#save-form>label{flex-basis:100%}.segment,.video-row{align-items:flex-start}.segment nav{flex-direction:column}.section-head{gap:12px}.seek-label{max-width:none;flex:1 1 80px}.transport .volume{flex:0 0 auto}.volume input{width:60px}}
@media(max-width:600px){.heading-use-cases{display:none}}
.mobile-touch:not(.ipad-touch) .heading-use-cases{display:none}
#message:empty{display:none}

/* One-line practice summary: equal outer columns keep it at the toolbar centre. */
.transport{display:grid;grid-template-columns:minmax(245px,1fr) minmax(0,auto) minmax(275px,1fr);gap:16px;flex-wrap:nowrap}
.transport-left,.transport-right{display:flex;align-items:center;gap:8px;min-width:0}
.transport-actions{display:flex;align-items:center;gap:8px;flex:0 0 auto}
.transport-left .seek-label{flex:1;min-width:40px}
.transport-right{justify-content:flex-end}.transport-right .volume{margin-left:0}
#practice-summary{display:block;max-width:100%;min-width:0;overflow-x:auto;white-space:nowrap;scrollbar-width:none;text-align:center;font-size:13px;font-variant-numeric:tabular-nums;color:var(--gold);line-height:24px;padding:4px 0}
#practice-summary::-webkit-scrollbar{display:none}
#transport{overflow-x:auto;scrollbar-width:thin}
@media(max-width:1000px){.transport{grid-template-columns:245px minmax(290px,1fr) 275px;gap:12px}.transport .volume{flex:0 0 auto}.transport-right #clock{margin-left:0}}

/* Test-page album shelf: the player stays on the left; saving and covers share one side rail. */
main{max-width:1480px}
.practice-workspace{display:grid;grid-template-columns:minmax(0,1fr) 430px;gap:20px;align-items:start}
.practice-workspace #player-shell{min-width:0}
.practice-side{min-width:0;padding:16px;background:var(--surface);border:1px solid #353b45;border-radius:13px}
.practice-side #save-section,.practice-side .library{margin:0;padding:0;border:0}
.practice-side .library{margin-top:16px;padding-top:16px;border-top:1px solid #353b45}
.practice-side h2{font-size:19px}
.practice-side p{font-size:12px;margin:3px 0 8px}
.practice-side .save-summary{color:var(--gold);font-variant-numeric:tabular-nums;margin:8px 0}
.practice-side #save-form{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:8px;align-items:end}
.practice-side #save-form>.segment-field{display:grid;gap:5px;min-width:0;font-size:12px;font-weight:700}
.practice-side #save-form>.segment-field input{width:100%;font-size:14px}
.practice-side .save-actions{display:flex;gap:5px;align-items:center}
.practice-side .save-actions button{padding-inline:10px;min-height:44px;font-size:12px}
.practice-side .video-title-edit{grid-column:1/-1;color:var(--muted);font-size:12px}
.practice-side .video-title-edit summary{cursor:pointer;list-style:none;display:inline-flex;align-items:center;min-height:30px}
.practice-side .video-title-edit summary::before{content:'▸';margin-right:5px;color:var(--gold)}
.practice-side .video-title-edit[open] summary::before{content:'▾'}
.practice-side .video-title-edit label{display:grid;gap:4px;margin-top:4px}
.practice-side .video-title-edit input{width:100%;height:38px}
.practice-side #editing{margin:4px 0 0;color:var(--gold)}
.practice-side #editing:empty{display:none}
.practice-side .section-head{gap:8px}
.practice-side .library .section-head{flex-wrap:wrap}
.practice-side #library-quota{margin-left:auto;color:var(--gold);font-size:12px;font-variant-numeric:tabular-nums;white-space:nowrap}
.practice-side .section-head button{min-height:34px;padding:5px 8px;font-size:12px}
.practice-side .library>.hint{margin:5px 0 8px}
.album-carousel{display:grid;grid-template-columns:30px minmax(0,1fr) 30px;gap:2px;align-items:center}
.album-arrow{width:30px;min-height:52px;padding:0;border:0;background:transparent;color:var(--gold);font-size:32px;line-height:1}
.album-arrow:disabled{opacity:.25}
.album-stage{min-width:0;height:228px;overflow:hidden;display:flex;align-items:center;justify-content:center;isolation:isolate;border:1px solid #343941;border-radius:10px;background:radial-gradient(ellipse at center,#2a2d33,#13161b 73%)}
.album-stage>p{max-width:240px;padding:20px;text-align:center;font-size:13px}
.album-cover{position:relative;display:flex;flex:0 0 132px;height:154px;flex-direction:column;min-width:0;margin:0 -18px;padding:0;overflow:hidden;text-align:left;border:1px solid #62656b;border-radius:8px;background:#12161d;box-shadow:0 9px 17px #0008;white-space:normal;transition:transform .18s ease,border-color .18s ease}
.album-cover.album-left{transform:rotate(-7deg);opacity:.78;z-index:1}
.album-cover.album-right{transform:rotate(7deg);opacity:.78;z-index:1}
.album-cover.album-center{flex-basis:180px;height:190px;z-index:2;margin:0 -10px;border:2px solid var(--gold);box-shadow:0 0 0 2px rgba(246,205,155,.16),0 12px 22px #000b}
.album-cover:hover{border-color:var(--gold)}
.album-art{display:grid;place-items:center;flex:0 0 auto;width:100%;height:84px;background:#0c0f14;overflow:hidden}
.album-center .album-art{height:119px}
.album-art img{display:block;width:100%;height:100%;object-fit:contain}
.album-art.album-art-fallback::before{content:'♪';font-size:42px;color:var(--gold)}
.album-copy{display:block;min-width:0;padding:7px 8px}
.album-copy strong{display:block;max-height:34px;overflow:hidden;font-size:11px;line-height:1.4;word-break:break-word}
.album-center .album-copy strong{font-size:12px}
.album-copy small{display:block;margin-top:3px;font-size:10px;color:var(--gold)}
.album-dots{display:flex;align-items:center;justify-content:center;gap:8px;min-height:27px;color:var(--muted);font-size:12px}
.album-dot{width:8px;height:8px;min-height:8px;padding:0;border:0;border-radius:50%;background:#9d9d9d;color:transparent;font-size:0}
.album-dot[aria-current=true]{background:var(--gold)}
.album-detail{padding:10px 11px;border:1px solid #353c48;border-radius:9px;background:#22262e}
.album-detail-head{display:flex;align-items:center;justify-content:space-between;gap:8px;min-width:0}
.album-detail-head strong{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:13px}
.album-detail-head button{min-height:30px;padding:3px 7px;flex:0 0 auto;color:var(--gold);font-size:11px;border:0;background:transparent}
.practice-side .segments{margin-top:6px;max-height:205px;overflow-y:auto}
.practice-side .segment{padding:8px 0;gap:8px;align-items:center}
.practice-side .segment>div:first-child{flex:1;min-width:0}
.practice-side .segment strong{font-size:12px;line-height:1.45}
.practice-side .segment small{font-size:11px;line-height:1.4}
.practice-side .segment nav{display:flex;flex:0 0 auto;gap:5px;flex-wrap:nowrap}
.practice-side .segment nav button{min-height:32px;padding:4px 7px;font-size:11px}
.practice-side .segment nav button:first-child{color:var(--gold);border-color:#8c7155}
.practice-side #segments-more,.practice-side #library-more{min-height:32px;margin-top:8px;padding:4px 8px;font-size:11px}
.practice-side .library-retention{font-size:11px;margin:8px 0 0}
.practice-tutorial-card{position:relative;display:flex;align-items:flex-end;gap:12px;box-sizing:border-box;min-height:142px;margin-top:16px;padding:16px;overflow:hidden;flex-shrink:0;border:1px solid rgba(246,205,155,.48);border-radius:6px;background:#101318;color:#fff;text-decoration:none;isolation:isolate;transition:border-color .18s,box-shadow .18s}
.practice-tutorial-card img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:center 49%}
.practice-tutorial-card::before{content:"";position:absolute;inset:0;z-index:1;background:linear-gradient(90deg,rgba(9,11,16,.5),rgba(9,11,16,.1) 55%,transparent 82%)}
.practice-tutorial-copy{position:relative;z-index:2;display:grid;gap:3px;min-width:0;margin-right:auto;text-shadow:0 1px 5px #000}
.practice-tutorial-copy strong{font-size:22px;line-height:1.2}
.practice-tutorial-copy span{font-size:12px;line-height:1.5;color:#f1e3d4}
.practice-tutorial-play{position:relative;z-index:2;display:grid;place-items:center;flex:0 0 42px;width:42px;height:42px;border-radius:50%;background:#f6cd9b;color:#0f1115;box-shadow:0 4px 16px #0008}
.practice-tutorial-card:hover{border-color:#ffd9a8;box-shadow:0 5px 18px #0006}
.practice-tutorial-card:hover .practice-tutorial-play{background:#ffd9a8}
.practice-tutorial-card:focus-visible{outline:2px solid #ffd9a8;outline-offset:4px}
.practice-faq{min-width:0;margin-top:24px;padding-top:18px;border-top:1px solid #353b45}
.practice-side .practice-faq h2{margin:0 0 10px;font-size:18px;line-height:1.4;color:#fff}
.practice-faq details{border-bottom:1px solid #353b45}
.practice-faq summary{display:flex;align-items:center;gap:12px;min-height:50px;padding:10px 2px;list-style:none;cursor:pointer;color:#fff;font-size:14px;font-weight:700;line-height:1.5}
.practice-faq summary::-webkit-details-marker{display:none}
.practice-faq summary::after{content:"";flex:0 0 8px;width:8px;height:8px;margin:0 6px 4px auto;border-right:2px solid #f6cd9b;border-bottom:2px solid #f6cd9b;transform:rotate(45deg);transition:transform .18s ease}
.practice-faq details[open] summary{color:#f6cd9b}
.practice-faq details[open] summary::after{transform:rotate(225deg);margin-bottom:-4px}
.practice-side .practice-faq p{margin:0 18px 16px 2px;color:#d5d1cc;font-size:13px;line-height:1.75}
.practice-faq summary:focus-visible{outline:2px solid #ffd9a8;outline-offset:2px;border-radius:4px}
@media(prefers-reduced-motion:reduce){.practice-faq summary::after{transition:none}}
@media(min-width:1280px){
  .site-head{max-width:none;min-height:54px;padding:10px 24px}
  main{padding:15px 24px 0}
  .heading{margin-bottom:7px}
  .heading h1{font-size:28px;margin-bottom:3px}
  .heading p{margin:0;font-size:13px}
  .import{display:flex;align-items:center;gap:12px}
  .import>label{flex:0 0 auto;margin:0;font-size:13px}
  .import>div{flex:1;min-width:0}
  #trial-notice{margin:4px 0 1px;font-size:11px;line-height:1.35}
  main>.hint{margin:1px 0;font-size:11px;line-height:1.35}
  #message{min-height:16px;margin:3px 0 6px;font-size:11px;line-height:1.35}
  .practice-side{padding:13px}
  .practice-side .library{margin-top:7px;padding-top:7px}
  .practice-side .save-summary{margin:4px 0}
  .practice-side .video-title-edit summary{min-height:20px}
  .practice-side .library>.hint{margin:3px 0 5px}
  .album-stage{height:188px}
  .album-cover{height:134px}
  .album-cover.album-center{height:166px}
  .album-art{height:70px}
  .album-center .album-art{height:97px}
  .album-dots{min-height:22px}
  .practice-side .library-retention{margin-top:4px}
  .practice-workspace .volume{white-space:nowrap}
  .practice-workspace .volume input{width:65px}
}
@media(max-width:1279px){.practice-workspace{display:block}.practice-side{max-width:560px;margin:18px auto 0}}
@media(max-width:600px){.practice-side{padding:12px}.practice-side #save-form{grid-template-columns:minmax(0,1fr) auto}.practice-side .save-actions{flex-wrap:wrap}.practice-side .save-actions button{min-height:44px}.album-stage{height:210px}.album-cover{flex-basis:108px;height:145px;margin:0 -16px}.album-cover.album-center{flex-basis:156px;height:178px}.album-art{height:74px}.album-center .album-art{height:105px}.practice-side .segment{align-items:flex-start}.practice-side .segment nav{flex-direction:column}}

/* Keep the clock's footprint fixed while tenths and minutes change. */
#clock{flex:0 0 126px;min-width:126px;text-align:right;white-space:nowrap}
#portrait-toolbar-hint{display:none}
@media(max-height:600px) and (orientation:landscape) and (max-width:1000px){
  #transport{overflow-x:visible;padding:7px 8px}
  .transport{display:flex;width:100%;gap:7px;flex-wrap:nowrap}
  .transport-left{flex:0 1 auto;gap:6px;min-width:0}
  .transport-right{flex:0 0 auto;justify-content:flex-start;gap:6px;min-width:0}
  .transport-left button,.transport-right button{min-height:38px;padding:5px 8px;font-size:12px}
  .transport-left .seek-label{flex:0 1 100px;width:100px;min-width:36px}
  #practice-summary{display:block;flex:1 1 auto;min-width:0;overflow:hidden;text-overflow:ellipsis;text-align:right}
  .transport-right .volume{gap:4px;flex:0 0 auto;margin:0;font-size:12px}
  .transport-right .volume input{width:56px}
  #clock{flex:0 0 111px;min-width:111px;margin:0;font-size:11px}
  #fullscreen{margin-left:auto}
}

/* Touch devices use hardware volume; iPad fullscreen uses the page picker below. */
#clock-mobile{display:none}
.mobile-touch .transport{display:flex;align-items:center;gap:8px;flex-wrap:nowrap}
.mobile-touch #transport{overflow-x:visible}
.mobile-touch .transport-left{flex:0 1 auto;gap:6px;min-width:0}
.mobile-touch .transport-actions{gap:6px;flex-flow:row nowrap;white-space:nowrap}
.mobile-touch .transport-left .seek-label{flex:0 1 100px;width:100px;min-width:35px;max-width:100px}
.mobile-touch .transport-right{flex:0 0 auto;justify-content:flex-end;gap:0;min-width:0;margin-left:0}
.mobile-touch .transport-right .volume,.mobile-touch .transport-right #clock{display:none}
.mobile-touch #clock-mobile{display:inline-block;flex:0 0 126px;min-width:126px;text-align:left;white-space:nowrap;font-size:13px;font-variant-numeric:tabular-nums}
.mobile-touch #practice-summary{display:block;flex:1 1 auto;min-width:0;overflow:hidden;text-overflow:ellipsis;text-align:right;white-space:nowrap}
.mobile-touch #fullscreen{margin-left:auto}
.mobile-touch #a,.mobile-touch #b,.mobile-touch #custom-length{cursor:pointer}
.mobile-touch #custom-length-label{display:none!important}
#bluetooth-calibration{display:none}
.mobile-touch #bluetooth-calibration{display:inline-grid;place-items:center;flex:0 0 38px;width:38px;min-height:38px;padding:5px;border-color:#535762}
.mobile-touch #bluetooth-calibration svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.mobile-touch #bluetooth-calibration.active{border-color:#73d898;background:#287747;color:#fff}
.bluetooth-calibration-panel{position:absolute;z-index:90;left:50%;bottom:calc(100% + 8px);transform:translateX(-50%);width:min(324px,calc(100vw - 24px));max-height:calc(100dvh - 24px);overflow-y:auto;overscroll-behavior:contain;padding:12px;border:1px solid rgba(246,205,155,.45);border-radius:12px;background:rgba(23,26,33,.98);box-shadow:0 18px 42px rgba(0,0,0,.5)}
.bluetooth-calibration-head{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:10px;color:var(--gold)}
.bluetooth-calibration-head button{width:36px;min-height:36px;padding:4px;font-size:20px}
.bluetooth-latency-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}
.bluetooth-latency-grid button{display:grid;align-content:center;justify-items:center;gap:1px;min-height:58px;padding:6px}
.bluetooth-latency-grid button[aria-pressed=true]{border-color:var(--gold);background:#3d342a;color:var(--gold)}
.bluetooth-latency-grid button small{color:var(--muted);font-size:11px}
.bluetooth-calibration-actions{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:12px}
.bluetooth-calibration-actions button{flex:0 0 auto;width:auto;min-height:40px;padding:7px 18px;font-weight:700}
#bluetooth-latency-enable{border-color:#73d898;background:#287747;color:#fff}
#bluetooth-latency-stop{border-color:#d87880;background:#8d2e36;color:#fff}
#time-picker{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin:8px 7px;padding:9px;border:1px solid #6f5a44;border-radius:9px;background:#22262e}
#time-picker strong{width:100%;color:var(--gold)}
#time-picker label{display:flex;align-items:center;gap:4px;color:var(--muted)}
#time-picker select{min-width:65px}
.ipad-select-trigger{display:none}
.ipad-time-trigger{display:none}
.ipad-touch body.practice-fullscreen #controls select{display:none!important}
.ipad-touch body.practice-fullscreen #controls #a,.ipad-touch body.practice-fullscreen #controls #b{display:none!important}
.ipad-touch body.practice-fullscreen #controls .ipad-time-trigger{display:inline-flex;align-items:center;width:76px;min-height:36px;padding:5px 7px;border-color:var(--gold);border-radius:7px;background:#0f1115;text-align:center;font-size:13px;font-weight:400;font-variant-numeric:tabular-nums}
.ipad-touch body.practice-fullscreen #controls .ipad-select-trigger{display:inline-flex;align-items:center;justify-content:space-between;gap:5px;min-height:36px;padding:5px 7px;border-color:#535762;border-radius:7px;background:#0f1115;text-align:left;font-size:13px;font-weight:400}
.ipad-touch body.practice-fullscreen #controls .ipad-select-trigger::after{content:'⌄';color:var(--gold);font-size:15px;line-height:1}
.ipad-touch body.practice-fullscreen #length + .ipad-select-trigger{width:88px}
.ipad-touch body.practice-fullscreen #bpm + .ipad-select-trigger{width:100px}
.ipad-touch body.practice-fullscreen #progress-fields .ipad-select-trigger{width:58px}
.ipad-touch body.practice-fullscreen #time-picker .ipad-select-trigger{min-width:65px}
#ipad-fullscreen-picker{position:fixed;z-index:600;inset:0;display:grid;place-items:center;padding:16px;background:#0009}
.ipad-picker-panel{display:flex;flex-direction:column;width:min(340px,calc(100vw - 32px));max-height:min(70dvh,520px);padding:12px;border:1px solid var(--gold);border-radius:12px;background:#171a21;box-shadow:0 20px 52px #000b}
.ipad-picker-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:8px}
.ipad-picker-head strong{color:var(--gold)}
.ipad-picker-head button{min-height:36px;padding:5px 10px}
#ipad-picker-options{position:relative;overflow-y:auto;overscroll-behavior:contain;touch-action:pan-y;border-top:1px solid #353b45}
#ipad-picker-options button{display:block;width:100%;min-height:44px;padding:8px 12px;border:0;border-bottom:1px solid #30353e;border-radius:0;background:transparent;text-align:left}
#ipad-picker-options button[aria-selected=true]{background:#3d342a;color:var(--gold);font-weight:800}
@media(max-width:600px){.ipad-touch body.practice-fullscreen #length + .ipad-select-trigger{width:85px}.ipad-touch body.practice-fullscreen #progress-fields .ipad-select-trigger{width:52px}}
@media(max-height:600px) and (orientation:landscape) and (max-width:1000px){
  .mobile-touch .transport-left button,.mobile-touch .transport-right button{padding:5px 7px}
  .mobile-touch #clock-mobile{flex-basis:111px;min-width:111px;font-size:11px}
  .mobile-touch #practice-summary{font-size:11px}
}

/* The saved-segment drawer uses matching edge handles in fullscreen on every device. */
#fullscreen-library-toggle,#library-drawer-close{display:none}
body.practice-fullscreen{--drawer-width:min(390px,calc(100vw - 52px))}
@media(min-width:1280px){body.practice-fullscreen{--drawer-width:min(430px,calc(100vw - 52px))}}
html:not(.mobile-touch) body.practice-fullscreen{--drawer-width:min(520px,calc(100vw - 52px))}
@media(min-width:1280px){html:not(.mobile-touch) body.practice-fullscreen{--drawer-width:min(573.333px,calc(100vw - 52px))}}
.practice-side #segment-auto-name{display:flex;align-items:center;min-height:44px;padding:8px 10px;border:1px solid #535762;border-radius:7px;background:#0f1115;color:var(--gold);font-size:14px;overflow-wrap:anywhere}
body.practice-fullscreen #fullscreen-library-toggle,body.practice-fullscreen .practice-side.drawer-open + #library-drawer-close{display:flex;flex-direction:column;align-items:center;gap:0;padding:7px 5px;min-width:40px;min-height:0;border:1px solid var(--gold);border-right:0;border-radius:10px 0 0 10px;background:#1d212b;color:var(--gold);font-size:14px;font-weight:800;line-height:1.15;box-shadow:0 5px 18px #0009}
body.practice-fullscreen #fullscreen-library-toggle{position:absolute;z-index:2;right:0;top:38%}
body.practice-fullscreen #library-drawer-close{position:fixed;z-index:360;right:var(--drawer-width);top:38%}
body.practice-fullscreen .practice-side{position:fixed;z-index:350;top:env(safe-area-inset-top);right:0;bottom:env(safe-area-inset-bottom);display:flex;flex-direction:column;width:var(--drawer-width);max-width:none;height:auto;margin:0;overflow-y:auto;overscroll-behavior:contain;border-radius:14px 0 0 14px;background:#171a21;box-shadow:-18px 0 44px #000b;transform:translateX(105%);transition:transform .22s ease}
body.practice-fullscreen .practice-side.drawer-open{transform:translateX(0)}
body.practice-fullscreen .practice-side .library{order:-1;margin:0;padding:0;border:0}
body.practice-fullscreen .practice-side #save-section{order:0;margin-top:14px;padding-top:14px;border-top:1px solid #353b45}
.mobile-touch .practice-side #editing{display:none}
.mobile-touch .practice-side #save-section>p:first-of-type{display:none}
body.practice-fullscreen .practice-side .segments{max-height:none;overflow:visible}
#segment-status{position:absolute;inset:0;z-index:2;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:18px;padding:20px;text-align:center;background:#060709f2}
#segment-status strong{max-width:28ch;color:#fff;font-size:clamp(17px,2.4vw,25px);line-height:1.5;white-space:pre-line}
html:not(.mobile-touch) #segment-status strong{max-width:calc(100vw - 48px)}
.segment-status-mark{position:relative;display:grid;place-items:center;width:92px;height:92px;overflow:hidden;border-radius:50%;background:#000;filter:drop-shadow(0 0 7px rgba(246,205,155,.18))}
.segment-status-mark::before,.segment-status-mark::after{content:"";position:absolute;pointer-events:none;background-position:center;background-repeat:no-repeat}
.segment-status-mark::before{inset:0;background-image:url("/assets/gongo-loading-drummer-small.webp?v=20260711-loading-small-webp-v6");background-size:cover}
.segment-status-mark::after{inset:6px;background-image:url("/assets/gongo-loading-frame.svg?v=20260710-loading-drummer-v1");background-size:contain;animation:segment-status-spin 6s linear infinite}
.segment-status-mark img{display:none}
#segment-status[data-phase=ready] .segment-status-mark::after{animation:none}
@keyframes segment-status-spin{to{transform:rotate(360deg)}}
@media(prefers-reduced-motion:reduce){.segment-status-mark::after{animation:none}}
@media(max-height:600px){body.practice-fullscreen .album-stage{height:128px}body.practice-fullscreen .album-cover{height:92px;flex-basis:86px}body.practice-fullscreen .album-cover.album-center{height:118px;flex-basis:122px}body.practice-fullscreen .album-art{height:44px}body.practice-fullscreen .album-center .album-art{height:64px}}
@media(prefers-reduced-motion:reduce){body.practice-fullscreen .practice-side{transition:none}}
.play-control{position:relative;display:inline-flex;flex:0 0 auto}
.count-in-lights{position:absolute;left:0;bottom:calc(100% + 8px);z-index:3;display:flex;gap:6px;padding:7px 9px;border:1px solid #626a74;border-radius:999px;background:#171a21ed;pointer-events:none}
.count-in-lights>span{width:11px;height:11px;border:1px solid #7c8590;border-radius:50%;background:#59616b}
.count-in-lights>span.is-lit{border-color:#7bf6a0;background:#4de582;box-shadow:0 0 8px #4de58299}
/* Desktop: keep the count-in lights above Play and the practice hint after the clock. */
html:not(.mobile-touch) #transport{overflow:visible}
html:not(.mobile-touch) .transport{display:grid;grid-template-columns:minmax(0,1fr) max-content;gap:12px}
html:not(.mobile-touch) .transport-right{justify-self:end;white-space:nowrap}
html:not(.mobile-touch) .transport-right>*{flex-shrink:0}
html:not(.mobile-touch) .transport-right .volume{display:none}
html:not(.mobile-touch) .transport-left{min-width:0}
html:not(.mobile-touch) .play-control{display:inline-flex}
html:not(.mobile-touch) .desktop-play-meta{position:absolute;left:0;bottom:calc(100% + 8px);z-index:3;display:flex;align-items:center;gap:8px;max-width:calc(100vw - 48px);white-space:nowrap}
html:not(.mobile-touch) .desktop-play-meta .count-in-lights{position:static;flex:0 0 auto}
html:not(.mobile-touch) .transport-left #practice-summary{flex:0 1 auto;max-width:min(360px,32vw);min-width:0;overflow:hidden;text-overflow:ellipsis;padding:0;background:none;text-align:left;white-space:nowrap}
@media(orientation:portrait){
  .mobile-touch #video-caption,.mobile-touch .control-anchor #controls,.mobile-touch .transport-left,.mobile-touch #clock-mobile,.mobile-touch #practice-summary,.mobile-touch .transport-right>*:not(#fullscreen){display:none!important}
  .mobile-touch .control-anchor #transport{display:block!important;padding:9px 12px}
  .mobile-touch #portrait-toolbar-hint{display:block;padding:13px 12px 0;text-align:center;color:var(--gold);font-weight:700}
  .mobile-touch .transport,.mobile-touch .transport-right{display:flex;width:100%;justify-content:center}
  .mobile-touch #fullscreen{margin:0}
  .mobile-touch .count-in-lights,.mobile-touch body.practice-fullscreen #fullscreen-library-toggle,.mobile-touch body.practice-fullscreen #library-drawer-close{display:none!important}
}
@media(max-width:600px) and (orientation:landscape){
  .mobile-touch .transport{display:grid;grid-template-columns:minmax(0,1fr) max-content;grid-template-rows:auto auto;gap:4px 8px;align-items:center}
  .mobile-touch .transport-left{display:grid;grid-column:1;grid-row:1/3;grid-template-columns:minmax(0,1fr);grid-template-rows:auto auto;gap:4px;min-width:0}
  .mobile-touch .transport-actions{grid-column:1;grid-row:1;gap:4px;min-width:0;flex-flow:row nowrap;white-space:nowrap}
  .mobile-touch .transport-left .seek-label{grid-column:1;grid-row:2;flex:none;width:100px;min-width:0;max-width:100px}
  .mobile-touch #clock-mobile{grid-column:2;grid-row:2;align-self:center;flex:none;width:96px;min-width:96px;font-size:10px}
  .mobile-touch #practice-summary{display:none}
  .mobile-touch .transport-right{grid-column:2;grid-row:1;align-self:start;justify-content:flex-end;margin-left:0}
  .mobile-touch .transport-right #fullscreen{margin:0}
}

/* YT-only movable shortcut and upward six-slot menus. */
#player-shell{position:relative}
#yt-shortcut{position:absolute;z-index:4;display:flex;flex-direction:column;align-items:stretch;gap:5px;width:max-content;max-width:calc(100% - 16px);padding:6px;border:1px solid #626a74;border-radius:9px;background:#171a21f5;box-shadow:0 5px 18px #0008;touch-action:none;user-select:none;font-size:12px}
#yt-shortcut-actions{display:flex;align-items:center;gap:5px;flex-wrap:wrap;max-width:100%}
#yt-shortcut strong{color:var(--gold);white-space:nowrap}
#yt-shortcut,#yt-shortcut *{-webkit-touch-callout:none;-webkit-user-select:none;user-select:none;touch-action:none}
#yt-shortcut button{min-height:36px;padding:5px 8px;border-radius:7px;font-size:12px}
#yt-shortcut #yt-drag{display:flex;align-items:center;justify-content:center;min-width:24px;padding:5px 3px;border:0;background:transparent;color:var(--muted);cursor:grab}
#yt-shortcut.is-dragging,#yt-shortcut.is-dragging #yt-drag{cursor:grabbing}
#yt-shortcut.is-dragging{outline:2px solid var(--gold)}
#yt-shortcut #yt-collapse{color:var(--gold);border-color:#d9a96a}
#yt-shortcut #yt-start{background:#d58a39;border-color:#d58a39;color:#0f1115;font-weight:700}
#yt-shortcut #yt-stop{background:#873b47;border-color:#aa5965;font-weight:700}
#yt-ab-timeline{display:flex;align-items:center;gap:10px;width:100%;min-width:0;padding:2px 4px 0;color:#d9dee8;font-variant-numeric:tabular-nums}
#yt-ab-start,#yt-ab-end{flex:0 0 8ch;min-width:0;white-space:nowrap;text-align:center;font-size:11px}
#yt-ab-rail{position:relative;flex:1 1 auto;min-width:85px;height:44px;overflow:visible}
#yt-ab-rail::before,#yt-ab-selection{position:absolute;top:19px;height:6px;border-radius:6px;pointer-events:none}
#yt-ab-rail::before{content:"";left:0;right:0;background:#8b929d}
#yt-ab-selection{left:0;width:15%;background:#f6cd9b;box-shadow:0 0 10px #f6cd9b55}
#yt-shortcut #yt-ab-rail button{position:absolute;top:0;z-index:1;width:44px;height:44px;min-height:44px;padding:0;transform:translateX(-50%);border:0;background:transparent;color:#0f1115;font-size:12px;font-weight:800;cursor:ew-resize}
#yt-shortcut #yt-ab-a{z-index:2}
#yt-ab-rail button::before{position:absolute;top:12px;left:13px;width:18px;height:20px;content:"";border-radius:5px;background:#f6cd9b;box-shadow:0 1px 7px #0009}
#yt-ab-rail #yt-ab-b::before{background:#fff}
#yt-ab-rail button{isolation:isolate}
#yt-ab-rail button::before{z-index:-1}
#yt-shortcut #yt-ab-rail button:focus-visible{outline:2px solid #ffd9a8;outline-offset:-2px}
#yt-shortcut #yt-ab-rail button:active::before{box-shadow:0 0 0 3px #f6cd9b66}
#yt-save,#yt-load{display:inline-flex;align-items:center;gap:4px}
#yt-shortcut-menu{position:absolute;z-index:12;width:230px;max-width:calc(100% - 16px);max-height:calc(100% - 16px);overflow:auto;overscroll-behavior:contain;padding:10px;border:1px solid #626a74;border-radius:9px;background:#171a21;box-shadow:0 8px 24px #0009;font-size:13px}
.yt-menu-head{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:8px}
#yt-menu-close{min-height:30px;padding:1px 8px;font-size:20px}
#yt-menu-options{display:grid;gap:5px}
#yt-menu-options button{min-height:36px;text-align:left;padding:5px 9px;font-size:13px;font-variant-numeric:tabular-nums}
#yt-menu-options button[aria-selected=true]{border-color:var(--gold);color:var(--gold)}
#yt-menu-status{font-size:12px;color:var(--gold);margin:8px 0 0;overflow-wrap:anywhere}
#yt-menu-status:empty{display:none}
#yt-shortcut[hidden],#yt-shortcut-menu[hidden]{display:none!important}
@media(max-width:700px){#yt-shortcut,#yt-shortcut-actions{gap:3px}#yt-shortcut{padding:4px;font-size:11px}#yt-shortcut button{min-height:32px;padding:4px 6px;font-size:11px}}
@media(orientation:portrait){.mobile-touch #yt-shortcut{max-width:calc(100% - 16px)}}

#yt-shortcut.is-collapsed #yt-shortcut-actions>:not(#yt-collapse),#yt-shortcut.is-collapsed #yt-ab-timeline{display:none!important}

/* Touch devices show shortcuts only in landscape fullscreen. */
.mobile-touch body:not(.practice-fullscreen) #yt-shortcut,
.mobile-touch body:not(.practice-fullscreen) #yt-shortcut-menu{display:none!important}
@media(orientation:portrait){
  .mobile-touch #yt-shortcut,.mobile-touch #yt-shortcut-menu{display:none!important}
}

/* BPM shortcut: compact horizontal control centered above its toolbar button. */
#yt-shortcut-menu.is-bpm{width:380px;padding:7px 9px;overflow:hidden}
#yt-shortcut-menu.is-bpm .yt-menu-head{display:none}
#yt-shortcut-menu.is-bpm #yt-menu-options{display:flex;flex-direction:row;align-items:center;gap:6px;min-width:0}
#yt-shortcut-menu.is-bpm #yt-menu-options button{flex:0 0 42px;width:42px;min-height:44px;padding:4px 0;text-align:center;font-size:13px}
#yt-bpm-current{display:block;flex:0 0 40px;color:#fff;font-size:19px;font-weight:700;line-height:44px;font-variant-numeric:tabular-nums;text-align:center}
#yt-bpm-range{flex:1 1 90px;width:90px;min-width:44px;height:44px;min-height:44px;margin:0;padding:0;writing-mode:horizontal-tb;direction:ltr;touch-action:none;accent-color:var(--gold)}
.bpm-picker-min,.bpm-picker-max{flex:0 0 auto;color:var(--muted);font-size:11px;font-variant-numeric:tabular-nums}