@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+KR:wght@400;500;600;700&family=Noto+Serif+KR:wght@500;600;700&display=swap');

:root{color-scheme:light;--ink:#243a36;--muted:#727971;--line:#dce0d8;--paper:#f7f8f4;--accent:#b6503e;--serif:'Noto Serif KR',Batang,serif;--sans:'Noto Sans KR','Malgun Gothic',sans-serif;font-family:var(--sans);color:var(--ink);background:var(--paper);font-synthesis:none}
*{box-sizing:border-box}body{margin:0}button,input{font:inherit}button,a,input{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.48}a{color:inherit}button,input{outline-offset:5px}button:focus-visible,a:focus-visible,input:focus-visible{outline:2px solid var(--accent)}button{color:inherit}svg{width:24px;height:24px}input[type=number]{appearance:textfield;-moz-appearance:textfield}input::-webkit-inner-spin-button,input::-webkit-outer-spin-button{-webkit-appearance:none;margin:0}
.site-header{height:102px;max-width:1440px;margin:auto;padding:0 6%;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:14px;text-decoration:none}.brand-mark{font-family:var(--serif);background:var(--accent);color:#fff;width:44px;height:48px;display:grid;place-items:center;font-size:30px;border-radius:2px}.brand-name{font-size:17px;font-weight:600;letter-spacing:.04em}.brand-name small{display:block;font-size:10px;font-weight:500;letter-spacing:.18em;margin-top:5px}.header-note{display:flex;gap:15px;align-items:center;font-family:var(--serif);font-size:14px;color:var(--muted)}.small-line{height:1px;width:25px;background:#9aa398}.text-button{background:transparent;border:0;font-size:14px;padding:12px 0}.text-button span{margin-left:10px}
main{max-width:1240px;padding:46px 48px 0;margin:auto}.page-heading{display:flex;align-items:center;justify-content:space-between;margin-bottom:32px}.eyebrow{font-size:12px;font-weight:500;letter-spacing:.12em;color:var(--muted);margin:0 0 10px}h1{font-family:var(--serif);font-size:38px;letter-spacing:-.05em;line-height:1.5;margin:0;font-weight:600}.edition{font-family:var(--serif);font-size:26px;color:#8f978e;display:flex;gap:13px;align-items:center}.edition span{font-family:var(--sans);font-size:12px;border-left:1px solid var(--line);padding-left:13px}.workspace{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(350px,1fr);gap:44px;align-items:start}.section-heading,.section-heading>div,.notation-heading,.notation-heading>div{display:flex;align-items:center}.section-heading{justify-content:space-between}.section-no{font-family:var(--serif);font-size:13px;color:var(--accent);margin-right:12px}.section-heading h2,.notation-heading h2{font-size:18px;letter-spacing:-.03em;margin:0;font-weight:600}.muted{font-size:12px;color:var(--muted)}.section-description{font-size:14px;color:var(--muted);margin:13px 0 26px}.table-labels{display:grid;grid-template-columns:1fr 112px 118px;gap:14px;padding:0 18px 11px;font-size:12px;color:var(--muted)}.table-labels>span:not(:first-child){text-align:center}.sequence{border-top:1px solid var(--ink)}.sequence-row{display:grid;grid-template-columns:1fr 112px 118px;gap:14px;align-items:center;padding:19px 16px;border-bottom:1px solid var(--line);transition:background .2s}.sequence-row.selected{background:#edf0e8;box-shadow:inset 3px 0 0 var(--ink)}.sequence-row.excluded{opacity:.55}.row-title{border:0;background:transparent;text-align:left;padding:0;display:flex;align-items:center;gap:12px}.row-number{font-size:11px;color:#8b9388;font-variant-numeric:tabular-nums}.row-title strong{font-family:var(--serif);font-weight:600;display:block;font-size:20px;white-space:nowrap}.row-title small{display:block;font-size:11px;color:var(--muted);margin-top:5px}.bpm-control{display:flex;align-items:center;justify-content:center;gap:5px}.bpm-control input{width:51px;background:transparent;border:0;border-bottom:1px solid #ccd2c7;text-align:center;color:var(--ink);padding:6px 0;font-size:20px;font-variant-numeric:tabular-nums}.bpm-control span{font-size:10px;color:var(--muted)}.stepper{display:flex;height:36px;border:1px solid #d3d8ce;border-radius:5px;overflow:hidden;background:#fff}.stepper button{border:0;background:transparent;width:31px;font-size:18px;flex-shrink:0}.stepper button:hover{background:#e8eee4}.stepper input{width:100%;min-width:0;border:0;background:transparent;text-align:center;font-size:15px;color:var(--ink);padding:0}.sequence-summary{display:flex;justify-content:space-between;padding:19px 0;font-size:13px;color:var(--muted)}.sequence-summary strong{color:var(--ink);font-size:16px;font-weight:500;margin:0 5px;font-variant-numeric:tabular-nums}.transition-card{margin-top:13px;padding:20px 18px;border:1px solid var(--line);display:flex;gap:15px;align-items:center;border-radius:6px}.transition-symbol{color:var(--accent);font-size:28px;align-self:flex-start;line-height:1.3}.transition-card h3{font-size:14px;font-weight:600;margin:0 0 7px}.transition-card p{font-size:12px;color:var(--muted);margin:0;line-height:1.9}.transition-card strong{font-weight:500;color:var(--ink)}.ratio{font-family:var(--serif);font-size:34px;color:var(--accent);margin-left:auto;white-space:nowrap}.ratio span{font-size:17px}.fine-print{font-size:12px;color:var(--muted);line-height:1.8;margin:10px 0 0}
.player-panel{background:var(--ink);color:#f7f8f1;border-radius:12px;padding:25px 30px 21px;box-shadow:0 12px 30px #203a360b}.player-top{display:flex;justify-content:space-between;align-items:center}.player-label{font-size:12px;letter-spacing:.04em;color:#ced6c9}.status{font-size:11px;background:#ffffff0b;border:1px solid #ffffff26;padding:5px 10px;border-radius:20px}.status.slowing{background:#b6503e;color:#fff;border-color:#b6503e}.player-title{text-align:center;margin:25px 0 0}.player-title h2{font-family:var(--serif);font-size:29px;font-weight:500;margin:0 0 8px}.player-title p{font-size:12px;color:#bac6b6;margin:0}.rhythm-orbit{width:270px;height:270px;position:relative;margin:6px auto 0}.orbit-track{position:absolute;inset:0;width:100%;height:100%;transform:rotate(-90deg)}.orbit-track circle{fill:none;stroke:#ffffff20;stroke-width:1}.orbit-track .orbit-progress{stroke:#d7dfb0;stroke-width:2;stroke-dasharray:703.716;stroke-dashoffset:703.716;transition:stroke-dashoffset .1s}.beat-marker{position:absolute;width:27px;height:27px;border-radius:50%;display:grid;place-items:center;transform:translate(-50%,-50%);background:var(--ink);color:#aebba9;font-size:12px;border:1px solid #6c8277}.beat-marker.active{background:#e0e5c2;color:var(--ink);border-color:#e0e5c2;box-shadow:0 0 0 5px #e0e5c20d}.orbit-center{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center}.current-stroke{font-family:var(--serif);font-size:58px;line-height:1.55;font-weight:500}#beat-position{color:#d7dfcb;font-size:12px;margin-top:4px}.orbit-caption{font-size:10px;letter-spacing:.14em;color:#93a69a;margin-top:13px}.player-metrics{display:flex;align-items:center;justify-content:center;gap:32px;margin:0 0 24px}.player-metrics>div{min-width:98px;text-align:center;display:flex;flex-direction:column;gap:6px}.player-metrics>div>span{font-size:11px;color:#bac6b6}.player-metrics strong{font-size:28px;font-weight:500;font-variant-numeric:tabular-nums;line-height:1.2}.player-metrics small{font-size:13px;color:#b4c3b3;font-weight:400}.metric-divider{height:34px;width:1px;background:#ffffff20}.transport{display:flex;align-items:center;justify-content:center;gap:15px}.icon-button{width:40px;height:40px;background:transparent;border:1px solid currentColor;border-radius:50%;color:inherit;display:grid;place-items:center;flex-shrink:0}.transport .icon-button{border-color:#738477}.play-button{min-height:48px;min-width:176px;border:0;border-radius:5px;background:#e0e5c2;color:var(--ink);font-size:15px;font-weight:600;display:flex;align-items:center;justify-content:center;gap:13px}.play-button:hover{background:#f0f3d8}.play-button:active{transform:translateY(1px)}#play-icon{font-size:13px}.key-hint{font-size:9px;letter-spacing:.06em;color:#a1b2a5;border:1px solid #6c8277;padding:4px;border-radius:3px}.volume-control{display:flex;align-items:center;gap:13px;max-width:255px;margin:20px auto;font-size:11px;color:#b4c3b3}.volume-control input{width:100%;height:3px;accent-color:#d9dfbc;cursor:pointer}.volume-control label,.volume-control output{flex-shrink:0}.volume-control output{width:29px;font-variant-numeric:tabular-nums}.next-up{border-top:1px solid #ffffff20;padding-top:17px;display:flex;align-items:center;gap:12px;font-size:11px;color:#b4c3b3}.next-up strong{font-size:14px;font-weight:500;color:#e7ecdd}.next-up>span:last-child{margin-left:auto}.audio-note{font-size:10px;color:#a4b7a7;text-align:center;margin:17px 0 0}.notation-panel{border-top:1px solid var(--line);margin-top:40px;padding-top:26px}.notation-heading{justify-content:space-between;margin-bottom:20px}.notation-heading>div{gap:0}#notation-name{font-family:var(--serif);font-size:14px;color:var(--muted);margin-left:17px;padding-left:17px;border-left:1px solid var(--line)}.notation-legend{font-size:11px;color:var(--muted);word-spacing:4px}.notation-legend b{font-family:var(--serif);color:var(--ink);font-size:14px;margin-left:12px}.notation{display:grid;gap:8px}.notation-beat{border:1px solid var(--line);border-radius:4px;overflow:hidden;min-width:0;background:#fbfcf8}.notation-beat>span{font-size:10px;color:var(--muted);display:block;text-align:center;padding:7px;border-bottom:1px solid var(--line);background:#eff2eb}.notation-subdivisions{display:grid;grid-template-columns:repeat(var(--subdivisions),1fr)}.notation-cell{font-family:var(--serif);font-size:18px;text-align:center;padding:14px 0;border-right:1px solid var(--line);transition:background .1s}.notation-cell:last-child{border:0}.notation-cell.active{background:var(--ink);color:#f7f8f1}.notation-cell.slowing{background:var(--accent);color:#fff}.message{padding:12px 15px;border-left:3px solid var(--accent);background:#f8eae4;font-size:14px}footer{max-width:1144px;margin:34px auto 0;padding:24px 0 30px;border-top:1px solid var(--line);display:flex;justify-content:space-between;font-size:11px;color:var(--muted)}footer strong{font-family:var(--serif);font-size:19px;color:var(--ink)}.footer-dot{margin:0 8px}dialog{border:1px solid var(--line);border-radius:12px;max-width:540px;width:calc(100% - 32px);padding:28px;color:var(--ink);background:var(--paper);box-shadow:0 20px 80px #0003}dialog::backdrop{background:#14231f99;backdrop-filter:blur(4px)}.dialog-heading{display:flex;justify-content:space-between;align-items:center}.dialog-heading h2{font-family:var(--serif);font-size:24px;margin:0}.dialog-heading .icon-button{font-size:25px;border-color:var(--line)}dialog ol{padding-left:24px;font-size:14px;line-height:1.9}dialog li{margin-bottom:12px}dialog p{font-size:13px;line-height:1.9;color:var(--muted)}.reference-note{border-top:1px solid var(--line);padding-top:15px}.reference-note a{text-underline-offset:4px}
@media(min-width:1400px){main{padding-top:56px}.workspace{gap:56px}.player-panel{padding-left:36px;padding-right:36px}}
@media(max-width:1050px){main{padding:34px 28px 0}.site-header{padding:0 28px;height:88px}.workspace{gap:25px;grid-template-columns:minmax(0,1.2fr) minmax(310px,1fr)}.sequence-row,.table-labels{grid-template-columns:1fr 82px 105px;gap:9px;padding-left:10px;padding-right:10px}.row-title{gap:8px}.row-title strong{font-size:18px}.player-panel{padding:22px}.section-heading .muted{display:none}.ratio{font-size:28px}.transition-card{gap:10px;padding:16px 12px}footer{margin-left:28px;margin-right:28px}.notation-cell{font-size:16px}}
@media(max-width:760px){.site-header{height:78px;padding:0 22px}.header-note,.edition{display:none}.brand-mark{width:36px;height:40px;font-size:25px}.brand-name{font-size:15px}.brand-name small{font-size:9px}.text-button{font-size:13px}main{padding:28px 20px 0}.page-heading{margin-bottom:26px}h1{font-size:31px}.eyebrow{font-size:11px}.workspace{grid-template-columns:1fr;gap:28px}.player-panel{grid-row:1;padding:22px 25px}.player-top{font-size:11px}.player-title{margin-top:19px}.rhythm-orbit{width:240px;height:240px;margin-top:4px}.player-metrics{margin-bottom:20px}.audio-note{margin-top:14px}.sequence-row,.table-labels{grid-template-columns:1fr 90px 112px;gap:9px}.sequence-row{padding-top:17px;padding-bottom:17px}.row-title strong{font-size:20px}.sequence-summary{padding-bottom:10px}.transition-card{margin-top:10px;padding:18px}.notation-panel{margin-top:28px}.notation-heading{align-items:flex-start;gap:15px;flex-direction:column}.notation-legend b:first-child{margin-left:0}.notation{gap:5px}.notation-cell{font-size:17px;padding:12px 0}.notation-beat>span{font-size:10px;padding:6px}.notation-heading h2{font-size:17px}footer{margin:28px 20px 0;font-size:10px;align-items:center;gap:15px}.fine-print{font-size:11px}.notation[data-beats="12"]{grid-template-columns:repeat(6,minmax(0,1fr))!important}}
@media(max-width:380px){.sequence-row,.table-labels{grid-template-columns:1fr 73px 101px;padding-left:7px;padding-right:7px;gap:5px}.row-number{display:none}.row-title strong{font-size:18px}.transport{gap:10px}.play-button{min-width:156px}.notation-cell{font-size:14px}.player-panel{padding-left:20px;padding-right:20px}.key-hint{display:none}.transition-card{padding:14px;gap:10px}.ratio{font-size:25px}}
.notation-cell.accented{position:relative;font-weight:700}.notation-cell.accented::before{content:'>';position:absolute;top:0;left:0;right:0;font:600 12px var(--sans)}
/* Keep the primary playback control visible on a normal laptop screen. */
@media(min-width:761px){.site-header{height:80px}main{padding-top:28px}.page-heading{margin-bottom:24px}.player-title{margin-top:18px}.rhythm-orbit{width:210px;height:210px}.player-metrics{margin-bottom:19px}.player-panel{padding-top:22px}.current-stroke{font-size:48px}.sequence-row{padding-top:16px;padding-bottom:16px}}
.player-label,.status,.table-labels,.volume-control,.next-up{font-size:13px}.section-description{font-size:14px}.volume-control input{min-height:18px}.audio-note{font-size:12px}.row-title small{font-size:12px}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{transition:none!important;scroll-behavior:auto!important}}
.transition-content{flex:1;min-width:0}.transition-control{display:grid;grid-template-columns:1fr auto;align-items:center;gap:7px 12px;margin-top:12px}.transition-control label{grid-column:1/-1;font-size:12px;font-weight:600;color:var(--ink)}.transition-control input{width:100%;min-width:0;accent-color:var(--accent);cursor:pointer}.transition-control input:disabled{cursor:not-allowed;opacity:.55}.transition-limits{font-size:11px;color:var(--muted);white-space:nowrap}.transition-card .ratio{align-self:center}.transition-control input:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
@media(max-width:380px){.transition-card .ratio{font-size:23px}.transition-control{grid-template-columns:1fr}.transition-limits{display:none}}
[hidden]{display:none!important}.app-tabs{display:flex;gap:8px;border-bottom:1px solid var(--line);margin-bottom:28px}.app-tabs button{background:transparent;border:0;border-bottom:3px solid transparent;padding:13px 18px;color:var(--muted);font-size:15px}.app-tabs button[aria-selected="true"]{border-bottom-color:var(--accent);color:var(--ink);font-weight:700}.video-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.video-card{padding:25px;border:1px solid var(--line);border-radius:9px;background:#fbfcf8;display:flex;flex-direction:column;overflow-wrap:anywhere}.video-card h2{font-family:var(--serif);font-size:23px;line-height:1.5;margin:0}.video-performer{font-size:14px;margin:10px 0;color:var(--muted)}.video-description{font-size:14px;line-height:1.8;white-space:pre-line}.video-actions{display:flex;align-items:center;gap:18px;flex-wrap:wrap;margin-top:auto;padding-top:22px}.video-play{background:var(--ink);color:var(--paper);border:0;border-radius:5px;padding:13px 17px;font-size:14px}.video-actions a,.video-player-area a,.video-policy a{text-underline-offset:4px;font-size:13px}.video-empty{padding:48px 24px;border:1px dashed var(--line);text-align:center;color:var(--muted);font-size:14px;line-height:1.8}.video-player-area{margin-bottom:28px}.video-player-heading{display:flex;align-items:center;justify-content:space-between;gap:16px}.video-player-heading h2{font-family:var(--serif);font-size:23px;overflow-wrap:anywhere}.video-player-heading button{flex-shrink:0}.video-embed{background:#172521;border-radius:8px;overflow:hidden;aspect-ratio:16/9;min-height:200px}.video-embed iframe{border:0;width:100%;height:100%;display:block}.video-policy{margin-top:30px;padding-top:18px;border-top:1px solid var(--line);font-size:12px;line-height:1.8;color:var(--muted)}.video-policy summary{cursor:pointer;color:var(--ink)}
@media(max-width:760px){.app-tabs button{padding:12px 10px;font-size:14px}.video-list{grid-template-columns:1fr}.video-card{padding:20px}.video-player-heading h2{font-size:20px}}
footer{flex-wrap:wrap}.audio-credits{flex:0 0 100%;margin-top:20px;padding-top:16px;border-top:1px solid var(--line);font-size:11px;line-height:1.8;overflow-wrap:anywhere}.audio-credits p{margin:4px 0}.audio-credits p:first-child{font-weight:600;color:var(--ink)}.audio-credits a{text-underline-offset:3px}

.row-duration{grid-column:1/-1;text-align:right;font-size:12px;color:var(--muted);margin-top:-5px;font-variant-numeric:tabular-nums}.row-duration>span{color:var(--ink)}
.practice-tools{border:1px solid var(--line);border-radius:10px;background:#fbfcf8;margin-bottom:24px}.practice-tools>summary{padding:18px 22px;cursor:pointer;font-weight:600}.practice-tools-body{padding:0 22px 20px}.practice-tools h2{font-size:16px;margin:6px 0 16px}.practice-fields{display:flex;flex-wrap:wrap;align-items:end;gap:12px}.practice-fields label{display:flex;flex-direction:column;gap:7px;font-size:12px;flex:1;min-width:130px}.practice-tools input,.practice-tools select{width:100%;min-width:0;border:1px solid var(--line);border-radius:5px;background:var(--paper);color:var(--ink);padding:10px;font:inherit;min-height:42px}.practice-tools input:focus-visible,.practice-tools select:focus-visible,.practice-tools button:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.practice-actions{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin-top:12px}.practice-actions button{border:1px solid var(--line);border-radius:5px;background:var(--paper);color:var(--ink);padding:11px 14px;font-size:13px}.practice-actions button:first-child{background:var(--ink);color:var(--paper)}.practice-tools :disabled{opacity:.5;cursor:not-allowed}.preset-editor{border-top:1px solid var(--line);margin-top:20px;padding-top:16px}.preset-saved{margin-top:14px}.preset-saved>label{flex:2}.preset-saved .practice-actions{flex:3}#share-result{margin-top:15px;font-size:12px}#share-link{flex:1;min-width:160px}#preset-message{font-size:13px;line-height:1.6;margin-bottom:0}.range-error,.error{color:#a23928;font-size:13px}.range-error:empty{display:none}@media(max-width:600px){.practice-tools-body{padding:0 14px 16px}.practice-tools>summary{padding:16px 14px;font-size:14px}.practice-fields>label{flex-basis:calc(50% - 12px)}#range-start-fields{width:100%}.preset-saved .practice-actions{flex-basis:100%}.practice-tools input,.practice-tools select{font-size:16px}}