.practice-room {padding-top:var(--page-start)}
.practice-heading {display:grid;grid-template-columns:minmax(0,1fr) 240px;gap:32px;align-items:center;margin-bottom:24px}
.practice-heading>div>a {display:inline-flex;align-items:center;gap:10px;color:var(--muted);font:12px var(--chinese);min-height:35px}
.practice-heading>div>a svg {width:15px;height:15px;transform:rotate(225deg)}
.practice-heading h1 {font:500 var(--page-title)/1.25 var(--chinese);letter-spacing:-.05em;margin:12px 0 10px}
.practice-heading p {font:12px var(--chinese);color:var(--yellow);letter-spacing:.15em;margin:0}
.practice-heading>img {display:block;width:100%;height:auto;aspect-ratio:1.5;object-fit:cover;object-position:52% 0%;border-radius:3px}
.practice-selection {display:flex;align-items:center;gap:20px;border-block:1px solid var(--line);padding:14px 0}
.practice-selection>label {min-width:0;display:flex;align-items:center;gap:12px;font-size:11px;color:var(--muted);white-space:nowrap}
.practice-selection select {min-width:0;flex:1;font:500 18px var(--chinese);max-width:270px;background:var(--bg);color:var(--ink);border:0;padding:6px 20px 6px 0}
.practice-selection>details {margin-left:auto;font:13px/1.8 var(--chinese);color:var(--muted)}
.practice-selection summary {min-height:40px;display:flex;align-items:center;cursor:pointer;list-style:none}
.practice-selection summary:after {content:"+";margin-left:16px;color:var(--yellow)}
.practice-selection details[open] summary:after {content:"−"}
.practice-selection details p {max-width:42em;margin:8px 0 16px}
.practice-selection details>div {display:flex;gap:10px;flex-wrap:wrap}

.practice-selection button,.practice-import {font:11px var(--chinese);border:1px solid var(--line);padding:9px 12px;min-height:38px;border-radius:3px;white-space:nowrap;display:inline-flex;align-items:center;cursor:pointer}
.practice-import {position:relative;overflow:hidden}
.practice-import input {position:absolute;inset:0;opacity:0;width:100%;cursor:pointer}
.practice-import:focus-within {outline:2px solid var(--yellow);outline-offset:3px}
.practice-transport {display:flex;align-items:center;gap:15px;padding:20px 0 16px;flex-wrap:wrap}
.practice-play {background:var(--ink);color:var(--bg);border-radius:4px;padding:13px 19px;min-height:46px;min-width:118px;font:12px var(--chinese)}
.practice-play[aria-pressed=true] {background:var(--yellow);color:var(--bg)}
.practice-stop {width:44px;height:44px;display:grid;place-items:center;border:1px solid var(--line);border-radius:4px}
.practice-stop svg {width:18px;height:18px;fill:currentColor}
.practice-tempo {display:flex;flex-direction:column;gap:7px;min-width:140px;color:var(--muted);font-size:10px}
.practice-tempo output {font:500 18px var(--sans);color:var(--ink);margin-inline:4px}
.practice-tempo input {width:150px;accent-color:var(--yellow)}
.practice-volume {display:flex;flex-direction:column;gap:12px;font-size:10px;color:var(--muted)}
.practice-volume input {width:80px;accent-color:var(--yellow)}
.practice-beats {display:flex;gap:12px;margin-left:auto}
.practice-beats i {width:10px;height:10px;border:1px solid var(--muted);border-radius:50%;background:none;transition:background .1s}
.practice-beats i.active {background:var(--yellow);border-color:var(--yellow);box-shadow:0 0 0 4px color-mix(in srgb,var(--yellow) 12%,transparent)}
[data-practice-position] {font:12px var(--sans);color:var(--muted);min-width:70px;text-align:right}
.practice-options {display:flex;align-items:center;gap:20px;flex-wrap:wrap;border-bottom:1px solid var(--line);padding:0 0 22px;font:11px var(--chinese);color:var(--text)}
.practice-options label {display:flex;align-items:center;gap:8px;min-height:28px}
.practice-options input {accent-color:var(--yellow)}
.practice-options select {background:var(--bg);color:var(--ink);border:1px solid var(--line);border-radius:3px;padding:6px 22px 6px 8px;font-size:11px}
.practice-options button {margin-left:auto;color:var(--muted);border-bottom:1px solid var(--line);min-height:28px;font-size:11px}
.practice-sheet-heading {display:flex;align-items:baseline;gap:22px;margin:34px 0 22px}
.practice-sheet-heading h2 {font:500 24px var(--chinese);letter-spacing:-.035em;margin:0}
.practice-sheet-heading>span {font:11px var(--sans);color:var(--muted)}
.practice-sheet-heading p {margin:0 0 0 auto;font-size:10px;color:var(--muted)}
.practice-sheet {display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.practice-measure {position:relative;text-align:left;display:block;width:100%;min-width:0;padding:15px 15px 13px;border:1px solid var(--line);background:var(--surface);color:var(--ink);border-radius:4px;overflow:hidden;transition:border-color .2s,background .2s}
.practice-measure>span {font:11px var(--sans);color:var(--muted);display:block;margin-bottom:5px}
.practice-measure.is-outside {opacity:.45}
.practice-measure.is-current {border-color:var(--yellow);box-shadow:inset 0 3px 0 var(--yellow)}
.practice-measure[aria-pressed=true]>span {color:var(--yellow)}
.practice-measure svg {display:block;width:100%;height:auto;overflow:visible}
.practice-staff {stroke:var(--muted);stroke-width:.55;opacity:.6}
.practice-note {fill:var(--ink);stroke:var(--ink);stroke-width:1.2}
.practice-cursor {fill:var(--yellow);opacity:.14;visibility:hidden}
.practice-measure.is-current .practice-cursor {visibility:visible}
.practice-count {fill:var(--muted);stroke:none;font:9px var(--sans)}
.practice-lower {display:flex;justify-content:space-between;gap:18px;padding-block:18px;color:var(--muted);font:10px/1.9 var(--chinese)}
.practice-lower p {margin:0}
.practice-legend {display:flex;gap:15px;flex-wrap:wrap}
.practice-lower [role=status] {text-align:right;max-width:48%}
.practice-file-help {font:11px/1.9 var(--chinese);color:var(--muted);border-top:1px solid var(--line);padding-top:16px}
.practice-file-help summary {cursor:pointer;min-height:32px}
.practice-file-help p {max-width:720px;margin:4px 0 0}
.practice-room :focus-visible {outline:2px solid var(--yellow);outline-offset:4px}
@media(max-width:850px) {
 .practice-heading {gap:24px;grid-template-columns:minmax(0,1fr) 190px}
 .practice-heading h1 {font-size:var(--page-title)}
 .practice-selection {flex-wrap:wrap;gap:12px 20px}
 .practice-transport {gap:12px}
 .practice-beats {gap:8px;margin-left:15px}
 .practice-sheet {gap:14px}
 .practice-options {gap:12px 15px}
}
@media(max-width:600px) {

 .practice-heading {grid-template-columns:minmax(0,1fr) 90px;gap:12px;margin-bottom:20px;position:relative}
 .practice-heading h1 {font-size:clamp(26px,7vw,32px);margin:8px 0}
 .practice-heading>img {position:static;width:100%;aspect-ratio:.85;object-position:52% 35%;opacity:1;mask-image:none}
 .practice-heading p {font-size:11px;letter-spacing:0;line-height:1.7}
 .practice-selection>label {width:100%;justify-content:space-between}
 .practice-selection select {font-size:17px;max-width:260px}
 .practice-selection>details {width:100%;margin:0}
 .practice-selection summary {min-height:32px}
 .practice-selection {gap:4px;padding:10px 0}
 .practice-selection button,.practice-import {min-height:35px;padding:7px 10px}
 .practice-transport {gap:12px 9px;padding-block:16px}
 .practice-play {min-width:112px;padding-inline:14px}
 .practice-tempo {min-width:140px;margin-left:auto}
 .practice-tempo input {width:140px}
 .practice-volume {flex-direction:row;align-items:center;gap:12px}
 .practice-beats {margin-left:auto;gap:11px}
 [data-practice-position] {min-width:68px;font-size:11px}
 .practice-options {gap:8px 13px;padding:16px 0;font-size:12px;border-top:1px solid var(--line);margin-top:20px}
 .practice-options button {margin-left:0}
 .practice-sheet-heading {margin:16px 0;flex-wrap:wrap;gap:10px 15px}
 .practice-sheet-heading h2 {font-size:21px}
 .practice-sheet-heading p {font-size:9px}
 .practice-sheet {grid-template-columns:1fr;gap:12px}
 .practice-measure {padding:13px 12px 10px}
 .practice-lower {display:block;font-size:9px}
 .practice-lower [role=status] {max-width:none;text-align:left;margin-top:10px}
 .practice-legend {gap:8px 13px}
}
@media(prefers-reduced-motion:reduce) {.practice-measure,.practice-beats i {transition:none}}
.motion-off .practice-measure,.motion-off .practice-beats i {transition:none}

.practice-score-sources {border-top:1px solid var(--line);padding:19px 0;color:var(--ink);font:13px var(--chinese)}
.practice-score-sources summary {cursor:pointer;min-height:28px}
.practice-score-sources>p {font-size:11px;color:var(--muted);line-height:1.8;margin:13px 0}
.practice-score-sources>a {display:flex;flex-direction:column;gap:8px;padding:13px 0;line-height:1.7;overflow-wrap:anywhere}
.practice-score-sources small {font-size:10px;color:var(--yellow)}

/* A quiet, optional practice mode. Fixed grid, no falling notes or flashing. */
.practice-challenge {margin-top:22px;border:1px solid var(--line);border-radius:5px;background:var(--surface);padding:0 22px}
.practice-challenge>summary {cursor:pointer;min-height:56px;display:flex;align-items:center;gap:18px;font:13px var(--chinese)}
.practice-challenge>summary:after {content:'＋';margin-left:auto;color:var(--yellow);font:18px var(--sans)}
.practice-challenge[open]>summary:after {content:'−'}
.practice-challenge>summary small {font-size:10px;color:var(--muted)}
.practice-challenge[open]>summary {border-bottom:1px solid var(--line)}
.challenge-top {display:flex;align-items:center;justify-content:space-between;gap:18px;padding:23px 0 20px}
.challenge-eyebrow {font:9px var(--sans);letter-spacing:.2em;color:var(--yellow)}
.challenge-top h2 {font:500 23px var(--chinese);margin:6px 0 0;letter-spacing:-.035em}
.challenge-top>button {font:12px var(--chinese);background:var(--ink);color:var(--bg);border-radius:4px;min-height:44px;padding:10px 18px;white-space:nowrap}
.challenge-top>button[aria-pressed=true] {background:var(--yellow)}
.challenge-score-heading {display:flex;justify-content:space-between;gap:12px;font:10px var(--chinese);color:var(--muted);margin-bottom:14px}
.challenge-grid {display:grid;grid-template-columns:38px repeat(16,minmax(0,1fr));row-gap:5px;column-gap:3px}
.challenge-lane-name {font:10px var(--chinese);align-self:center;color:var(--muted)}
.challenge-cell {display:grid;place-items:center;min-width:0;height:27px;border-bottom:1px solid var(--line);font:13px var(--sans);color:var(--ink);background:color-mix(in srgb,var(--ink) 3%,transparent);border-radius:2px}
.challenge-cell.beat-edge {border-left:1px solid var(--line)}
.challenge-cell.is-now {box-shadow:inset 0 -2px var(--yellow)}
.challenge-cell.is-caught {color:var(--yellow);background:color-mix(in srgb,var(--yellow) 10%,transparent)}
.challenge-pads {display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;margin-top:22px}
.challenge-pads button {display:flex;justify-content:center;align-items:center;gap:14px;border:1px solid var(--line);border-radius:4px;min-height:68px;touch-action:manipulation;user-select:none;color:var(--ink);font:12px var(--chinese)}
.challenge-pads kbd {font:16px var(--sans);color:var(--yellow)}
.challenge-pads button:disabled {opacity:.45;cursor:default}
.challenge-top>button:disabled {opacity:.45;cursor:default}
.challenge-feedback {min-height:20px;font:12px/1.7 var(--chinese);margin:17px 0 12px;color:var(--ink)}
.challenge-result {border-left:2px solid var(--yellow);padding:8px 12px;font:12px/1.9 var(--chinese);color:var(--ink);margin:12px 0}
.challenge-bottom {display:flex;align-items:baseline;gap:18px;justify-content:space-between;padding:5px 0 20px;font:10px/1.8 var(--chinese);color:var(--muted)}
.challenge-bottom>span {flex-shrink:0}
.challenge-bottom details {max-width:540px;text-align:right}
.challenge-bottom summary {cursor:pointer;min-height:24px}
.challenge-bottom p {text-align:left;margin:6px 0}
@media(max-width:600px) {
 .practice-challenge {padding-inline:13px;margin-top:18px}
 .practice-challenge>summary {gap:12px}
 .practice-challenge>summary small {font-size:9px}
 .challenge-top {padding:18px 0}
 .challenge-top h2 {font-size:21px}
 .challenge-top>button {font-size:11px;padding-inline:13px}
 .challenge-score-heading {font-size:9px;gap:8px}
 .challenge-grid {grid-template-columns:30px repeat(16,minmax(0,1fr));column-gap:2px}
 .challenge-lane-name {font-size:9px}
 .challenge-cell {font-size:10px;height:25px}
 .challenge-pads {gap:7px;margin-top:18px}
 .challenge-pads button {flex-direction:column;gap:7px;min-height:72px;font-size:11px}
 .challenge-bottom {display:block;font-size:9px}
 .challenge-bottom details {margin-top:8px;text-align:left;max-width:none}
 .challenge-feedback {font-size:11px}
 .challenge-result {font-size:11px;padding-left:10px}
}
.challenge-count {font:9px var(--sans);text-align:center;color:var(--muted);padding-bottom:4px}
@media(max-width:600px) {.challenge-count {font-size:8px}}

/* One progressive bridge beside the existing bar selection. */
.practice-options [data-practice-studio] {margin-left:0;color:var(--yellow);min-height:44px;font-size:13px}
.practice-studio-preview[hidden],.practice-studio-preview a[hidden] {display:none}
.practice-studio-preview {display:flex;align-items:center;justify-content:space-between;gap:24px;border-left:2px solid var(--yellow);padding:14px 18px;margin:10px 0 22px;background:color-mix(in srgb,var(--yellow) 4%,transparent)}
.practice-studio-preview>div:first-child {min-width:0}
.practice-studio-preview p {margin:3px 0;font:13px/1.8 var(--chinese);color:var(--muted);overflow-wrap:anywhere}
.practice-studio-preview [data-practice-studio-summary] {font-size:13px;color:var(--ink)}
.practice-studio-actions {display:flex;align-items:center;gap:12px;flex-shrink:0}
.practice-studio-actions a,.practice-studio-actions button {display:inline-flex;align-items:center;justify-content:center;min-height:44px;font:13px var(--chinese);padding:8px 12px;border:1px solid var(--line);border-radius:3px}
.practice-studio-actions a {color:var(--yellow);border-color:var(--yellow)}
@media(max-width:700px) {.practice-studio-preview {align-items:stretch;flex-direction:column;gap:10px;padding:12px}.practice-studio-actions {justify-content:flex-start;flex-wrap:wrap}}

/* Native score reading survives missing JavaScript and keeps sixteen-step labels legible. */
.practice-static-scores {min-width:0;max-width:100%;margin:0 0 20px;border-block:1px solid var(--line);font:13px/1.8 var(--chinese)}
.practice-static-scores>summary {cursor:pointer;min-height:44px;padding:10px 0;color:var(--ink)}
.practice-static-scores>p,.practice-static-score>p {color:var(--muted);max-width:52em;margin:10px 0}
.practice-static-score {min-width:0;max-width:100%;padding:18px 0 24px;border-top:1px solid var(--line)}
.practice-static-score>header {display:flex;align-items:baseline;justify-content:space-between;gap:8px 20px;flex-wrap:wrap}
.practice-static-score h2 {font:500 16px/1.6 var(--chinese);color:var(--ink);margin:0}
.practice-static-score>header p {font:12px/1.8 var(--sans);color:var(--muted);margin:0}
.practice-static-actions {display:flex;gap:8px 20px;flex-wrap:wrap;margin:8px 0}
.practice-static-actions a {display:inline-flex;align-items:center;min-height:44px;color:var(--ink);text-decoration:underline;text-underline-offset:4px}
.practice-static-scroll {box-sizing:border-box;width:100%;max-width:100%;min-width:0;overflow-x:auto;background:#fff;border:1px solid var(--line);border-radius:3px;overscroll-behavior-x:contain}
.practice-static-scroll>img {display:block;width:800px;min-width:800px;max-width:none;height:auto}
.practice-static-scroll:focus-visible,.practice-static-actions a:focus-visible,.practice-static-scores>summary:focus-visible {outline:3px solid var(--ink);outline-offset:3px}