:root {
  --paper:#f5f4ed;
  --surface:#fffef9;
  --sage:#e3e9dc;
  --sage-hover:#d9e3d0;
  --green:#355a43;
  --ink:#25392f;
  --muted:#58665a;
  --line:#d5dccf;
  --error:#8c352b;
  --serif:"Noto Serif CJK SC","Songti SC","SimSun",Georgia,serif;
  --sans:"Microsoft YaHei","PingFang SC",system-ui,-apple-system,sans-serif;
  color-scheme:light;
  scroll-behavior:smooth;
  scroll-padding-top:25px;
}
* { box-sizing:border-box; }
body { margin:0; color:var(--ink); background:var(--paper); font:17px/1.7 var(--sans); }
button,input { font:inherit; }
button,a,input,summary { -webkit-tap-highlight-color:transparent; }
a { color:var(--green); text-underline-offset:5px; }
button { color:inherit; cursor:pointer; }
button:disabled,input:disabled { cursor:default; opacity:.42; }
[hidden] { display:none !important; }
button:focus-visible,a:focus-visible,input:focus-visible,summary:focus-visible { outline:3px solid var(--green); outline-offset:5px; }
button,summary,a { touch-action:manipulation; }
button { min-height:44px; }
input[type="range"] { accent-color:var(--green); cursor:pointer; }
.site-shell { max-width:1240px; margin:0 auto; padding:0 48px; }
.skip-link { position:absolute; left:12px; top:10px; padding:10px 16px; background:var(--surface); transform:translateY(-180%); z-index:5; }
.skip-link:focus { transform:none; }
.site-header { display:flex; justify-content:space-between; align-items:center; gap:28px; min-height:114px; border-bottom:1px solid var(--line); }
.brand { display:flex; gap:15px; align-items:center; color:var(--ink); text-decoration:none; min-width:0; }
.brand-copy { display:flex; flex-direction:column; }
.brand-copy strong { font:500 29px/1.35 var(--serif); letter-spacing:.045em; }
.brand-copy > span { color:var(--muted); font-size:13px; margin-top:4px; }
.brand-leaf { flex:0 0 32px; position:relative; width:32px; height:45px; }
.brand-leaf::after { content:""; position:absolute; width:2px; height:33px; background:var(--green); left:16px; top:10px; transform:rotate(12deg); }
.brand-leaf i { position:absolute; height:24px; width:15px; border-radius:18px 0 18px 0; background:var(--green); }
.brand-leaf i:first-child { left:2px; top:8px; transform:rotate(-35deg); }
.brand-leaf i:last-child { right:0; top:0; transform:rotate(15deg); background:#839975; }
.header-right { display:flex; align-items:center; gap:28px; }
.main-nav,.languages { display:flex; align-items:center; gap:22px; }
.main-nav a,.languages a { display:inline-flex; align-items:center; min-height:44px; text-decoration:none; white-space:nowrap; font-size:14px; }
.languages { gap:4px; border-left:1px solid var(--line); padding-left:20px; }
.languages a { padding:0 9px; color:var(--muted); border-radius:4px; }
.languages a[aria-current="page"] { color:var(--green); background:var(--sage); }
.hero { display:grid; grid-template-columns:1.45fr .55fr; align-items:center; gap:45px; padding:30px 0 28px; }
.eyebrow { font-size:13px; letter-spacing:.12em; margin:0 0 15px; color:var(--muted); }
h1,h2,h3,h4,p { margin-top:0; }
h1 { font:500 42px/1.36 var(--serif); letter-spacing:.035em; max-width:650px; margin-bottom:16px; white-space:pre-line; }
.hero-description { color:var(--muted); max-width:630px; margin-bottom:17px; }
.collection-facts { color:var(--muted); font-size:14px; margin-bottom:20px; }
.text-link { display:inline-flex; gap:12px; align-items:center; min-height:44px; text-decoration:none; }
.text-link:hover { text-decoration:underline; }
.hero-link { font-size:16px; }
.garden-art { width:100%; max-width:220px; aspect-ratio:1; border-radius:50% 50% 48% 52%; background:#e2e7d7; position:relative; justify-self:end; overflow:hidden; }
.garden-ring { position:absolute; border:1px solid #93a889; border-radius:50%; width:155%; height:68%; left:-55%; top:5%; transform:rotate(-34deg); }
.ring-two { top:19%; left:-29%; }
.ring-three { top:34%; left:-3%; }
.garden-stem { position:absolute; width:42%; height:75%; border-radius:90% 0 90% 0; background:#b8c8a8; top:9%; left:45%; transform:rotate(24deg); opacity:.55; }
.stem-two { width:33%; height:62%; top:37%; left:15%; transform:rotate(-57deg); background:#8ea47e; opacity:.35; }
.garden-grain { position:absolute; width:110%; height:23%; background:var(--paper); opacity:.7; transform:rotate(-24deg); left:-5%; bottom:10%; }
.garden-word { position:absolute; font:400 41px/1 Georgia,serif; left:17%; top:36%; color:#355a43; }
.garden-caption { position:absolute; left:17%; top:61%; font-size:12px; color:#355a43; letter-spacing:.08em; max-width:70%; }
.listen-section { padding-bottom:66px; }
.section-heading { display:flex; align-items:flex-end; justify-content:space-between; gap:32px; margin-bottom:27px; }
.section-heading h2 { font:500 33px/1.45 var(--serif); margin:0; }
.section-heading .eyebrow { margin-bottom:7px; }
.section-side-note { margin:0; font-size:14px; line-height:1.8; color:var(--muted); white-space:pre-line; }
.listening-layout { display:grid; grid-template-columns:minmax(0,1.45fr) minmax(280px,1fr); gap:29px; align-items:start; }
.player { background:var(--surface); border:1px solid var(--line); border-radius:7px; padding:30px 34px 0; min-width:0; }
.piece-top { display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:10px; margin-bottom:18px; }
.piece-count { font-size:14px; color:var(--muted); margin:0; font-variant-numeric:tabular-nums; }
.current-version { background:var(--sage); color:var(--green); padding:4px 11px; font-size:13px; border-radius:20px; }
.piece-title { font:500 35px/1.4 var(--serif); margin-bottom:6px; overflow-wrap:anywhere; }
.piece-style { font-size:14px; color:var(--muted); margin-bottom:16px; }
.piece-description { color:var(--muted); margin-bottom:24px; }
.transport { display:flex; justify-content:center; align-items:center; gap:16px; }
.step-button { border:1px solid var(--line); border-radius:50%; width:48px; height:48px; background:transparent; padding:12px; display:grid; place-items:center; flex:0 0 48px; }
.step-button svg { width:22px; height:22px; fill:none; stroke:currentColor; stroke-width:1.8; stroke-linejoin:round; }
.step-button:hover:not(:disabled) { background:var(--sage); }
.play-button { min-height:58px; min-width:154px; padding:13px 27px; display:flex; justify-content:center; align-items:center; gap:13px; border:0; border-radius:40px; background:var(--green); color:#fffef9; font-size:18px; }
.play-button:hover { background:#284d36; }
.play-button svg { width:23px; height:23px; fill:currentColor; }
.progress-area { margin-top:18px; }
.progress-area input { width:100%; display:block; margin:0; height:44px; padding:0; }
.time-row { display:flex; justify-content:space-between; gap:20px; font-size:14px; color:var(--muted); font-variant-numeric:tabular-nums; margin-top:-1px; }
.player-options { display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:9px 20px; margin-top:13px; }
.volume-control { display:flex; gap:12px; align-items:center; min-height:44px; font-size:16px; }
.volume-control label { white-space:nowrap; }
.volume-control input { width:95px; height:44px; margin:0; }
.continuous-control { display:flex; align-items:center; gap:10px; min-height:44px; cursor:pointer; font-size:16px; }
.continuous-control input { width:18px; height:18px; margin:0; flex:0 0 18px; accent-color:var(--green); }
.playback-status { margin:7px 0 0; font-size:14px; color:var(--muted); min-height:24px; }
.player-bottom { display:flex; justify-content:space-between; align-items:center; gap:15px; flex-wrap:wrap; margin:4px 0 16px; font-size:14px; }
.speed-note { color:var(--muted); font-size:13px; }
.advanced { border-top:1px solid var(--line); }
.advanced summary,.all-downloads summary { display:flex; justify-content:space-between; align-items:center; gap:18px; cursor:pointer; list-style:none; min-height:64px; padding:14px 0; font-size:16px; }
.advanced summary::-webkit-details-marker,.all-downloads summary::-webkit-details-marker { display:none; }
.summary-plus { font-size:23px; font-weight:400; flex:0 0 auto; transition:transform .15s; }
details[open] > summary .summary-plus { transform:rotate(45deg); }
.advanced-body { padding:1px 0 25px; }
.advanced-intro { font-size:15px; color:var(--muted); margin-bottom:16px; }
.version-options { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:8px; }
.version-button { border:1px solid var(--line); border-radius:4px; min-height:47px; padding:10px 8px; background:transparent; font-size:15px; }
.version-button:hover { background:var(--sage); }
.version-button[aria-pressed="true"] { border-color:var(--green); background:var(--sage); }
.advanced h4 { font-size:17px; font-weight:500; margin:24px 0 8px; }
.composer-note { font-size:15px; color:var(--muted); margin-bottom:10px; }
.score-links { display:flex; flex-wrap:wrap; gap:3px 17px; font-size:14px; }
.score-links a { display:inline-flex; align-items:center; min-height:44px; }
.track-library { min-width:0; }
.track-library-heading { display:flex; align-items:center; justify-content:space-between; gap:15px; margin-bottom:13px; }
.track-library-heading h3 { font-size:17px; font-weight:500; margin:0; }
.track-library-heading > span { font-size:14px; color:var(--muted); white-space:nowrap; }
.track-list { list-style:none; padding:0; margin:0; border-top:1px solid var(--line); }
.track-button { display:grid; grid-template-columns:25px minmax(0,1fr) auto; align-items:center; width:100%; gap:9px; border:0; border-bottom:1px solid var(--line); background:transparent; text-align:left; padding:17px 10px; min-height:84px; }
.track-button:hover { background:var(--sage); }
.track-button[aria-current="true"] { background:var(--sage); }
.track-number,.track-duration { font-size:13px; font-variant-numeric:tabular-nums; color:var(--muted); }
.track-name { display:block; font:500 19px/1.4 var(--serif); overflow-wrap:anywhere; }
.track-style { display:block; font-size:13px; color:var(--muted); margin-top:3px; }
.library-note { color:var(--muted); font-size:14px; margin:17px 9px 0; }
.audio-error { margin:14px 0; border-left:3px solid var(--error); background:#f4eee6; padding:14px 17px; }
.audio-error p { font-size:15px; margin-bottom:8px; }
.error-actions { display:flex; flex-wrap:wrap; gap:7px 18px; align-items:center; font-size:14px; }
.error-actions a { min-height:44px; display:inline-flex; align-items:center; }
.button-secondary { background:transparent; border:1px solid var(--line); border-radius:4px; padding:9px 14px; font-size:16px; }
.button-secondary:hover { background:var(--sage); }
.collection-error { padding:30px; border:1px solid var(--line); }
.collection-error h3 { font-size:20px; margin-bottom:9px; }
.research-section { padding:53px 0 56px; border-top:1px solid var(--line); }
.explanation-grid { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:35px; margin-top:31px; }
.explanation-number { display:block; font:400 24px/1 Georgia,serif; color:#76866c; margin-bottom:19px; }
.explanation-grid h3 { font-size:19px; line-height:1.6; font-weight:500; margin-bottom:13px; }
.explanation-grid p { color:var(--muted); font-size:16px; margin-bottom:0; }
.evidence-block { margin-top:45px; padding-top:29px; border-top:1px solid var(--line); }
.evidence-header { display:flex; justify-content:space-between; gap:20px; align-items:center; }
.evidence-header h3 { font-size:20px; font-weight:500; margin-bottom:0; }
.evidence-header p { font-size:13px; color:var(--muted); margin:0; }
.evidence-list { list-style:none; padding:0; margin:13px 0 0; }
.evidence-list li { display:grid; grid-template-columns:280px minmax(0,1fr); gap:25px; padding:20px 0; border-bottom:1px solid var(--line); }
.study-label { display:flex; align-items:baseline; gap:14px; font-size:16px; }
.study-label > span { font-size:13px; color:var(--muted); font-variant-numeric:tabular-nums; }
.study-label a { text-decoration:none; }
.study-label a:hover { text-decoration:underline; }
.evidence-list p { margin:0; color:var(--muted); font-size:15px; }
.care-note { display:flex; align-items:flex-start; gap:18px; background:var(--sage); border-radius:5px; padding:24px 28px; margin-top:29px; }
.care-mark { width:27px; height:27px; border:1px solid var(--green); border-radius:50%; flex:0 0 27px; text-align:center; font:italic 18px/26px Georgia,serif; margin-top:3px; }
.care-note h3 { font-size:18px; font-weight:500; margin-bottom:7px; }
.care-note p { font-size:15px; color:var(--muted); margin:0; }
.downloads-section { padding:0 0 53px; }
.all-downloads { border-top:1px solid var(--line); border-bottom:1px solid var(--line); }
.all-downloads > summary { padding:17px 2px; font-size:17px; }
.download-grid { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); column-gap:45px; padding-bottom:15px; }
.download-piece { padding:24px 0; border-top:1px solid var(--line); min-width:0; }
.download-piece h3 { font:500 21px/1.4 var(--serif); margin-bottom:13px; overflow-wrap:anywhere; }
.download-versions { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:7px 15px; }
.download-versions a { min-height:44px; display:inline-flex; gap:7px; align-items:center; font-size:15px; text-decoration:none; }
.download-versions a:hover { text-decoration:underline; }
.download-versions a::after { content:"↓"; margin-left:auto; margin-right:9px; }
.site-footer { display:flex; align-items:flex-start; justify-content:space-between; gap:22px; padding:30px 0 40px; border-top:1px solid var(--line); font-size:14px; color:var(--muted); }
.site-footer strong { font-weight:500; color:var(--ink); }
.site-footer p { margin:7px 0 0; }
.site-footer > a { min-height:44px; display:inline-flex; align-items:center; }
.noscript-message { max-width:1100px; margin:20px auto; padding:25px; border:1px solid var(--line); }
html[lang="zh"] .noscript-en,html[lang="en"] .noscript-zh { display:none; }
.sr-only { position:absolute; width:1px; height:1px; overflow:hidden; clip:rect(0,0,0,0); white-space:nowrap; margin:-1px; padding:0; border:0; }
@media (max-width:1050px) {
  .site-shell { padding:0 30px; }
  .header-right { gap:14px; }
  .main-nav { gap:15px; }
  .languages { padding-left:12px; }
  .brand-copy strong { font-size:26px; }
  .brand-copy > span { max-width:260px; }
  .hero { gap:30px; }
  h1 { font-size:40px; }
  .garden-art { max-width:220px; }
  .garden-word { font-size:41px; }
  .listening-layout { grid-template-columns:minmax(0,1.4fr) minmax(260px,1fr); gap:23px; }
  .player { padding:27px 26px 0; }
  .player-options { display:block; }
  .evidence-list li { grid-template-columns:245px minmax(0,1fr); }
}
@media (max-width:810px) {
  .site-header { align-items:flex-start; padding:21px 0; min-height:auto; }
  .header-right { flex-direction:column-reverse; align-items:flex-end; gap:8px; }
  .languages { border:0; padding:0; }
  .main-nav { gap:18px; }
  .main-nav a { font-size:13px; }
  .hero { gap:25px; grid-template-columns:1.25fr .75fr; }
  h1 { font-size:39px; }
  .hero-description { font-size:16px; }
  .garden-art { max-width:225px; }
  .garden-word { font-size:40px; }
  .garden-caption { font-size:11px; }
  .section-heading h2 { font-size:29px; }
  .listening-layout { grid-template-columns:minmax(0,1fr); gap:30px; }
  .player { padding:28px 31px 0; }
  .piece-description { min-height:0; }
  .player-options { display:flex; }
  .track-list { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); column-gap:20px; }
  .track-button { min-height:96px; }
  .explanation-grid { gap:23px; }
  .explanation-grid h3 { font-size:18px; }
  .explanation-grid p { font-size:15px; }
  .evidence-list li { grid-template-columns:1fr; gap:9px; }
  .site-footer { flex-wrap:wrap; }
  .site-footer > div { flex-basis:100%; }
}
@media (max-width:600px) {
  .site-shell { padding:0 22px; }
  .site-header { flex-wrap:wrap; gap:13px; }
  .brand-copy strong { font-size:27px; }
  .brand-copy > span { max-width:none; }
  .header-right { flex-direction:row; justify-content:space-between; align-items:center; width:100%; gap:8px; }
  .main-nav { gap:18px; }
  .languages { gap:0; }
  .languages a { font-size:13px; padding:0 8px; }
  .hero { position:relative; grid-template-columns:minmax(0,1fr); gap:0; padding:25px 0 24px; }
  .hero-copy { z-index:1; }
  .garden-art { display:none; }
  h1 { font-size:35px; margin-bottom:14px; max-width:430px; }
  .hero-description { font-size:17px; }
  .collection-facts { font-size:13px; }
  .hero-link { font-size:16px; }
  .section-heading { display:block; margin-bottom:20px; }
  .section-heading h2 { font-size:28px; }
  .section-side-note { margin-top:12px; font-size:15px; }
  .player { padding:24px 23px 0; }
  .piece-title { font-size:31px; }
  .piece-description { font-size:17px; }
  .player-options { display:block; }
  .volume-control { justify-content:space-between; }
  .volume-control input { width:44%; }
  .continuous-control { margin-top:5px; }
  .track-list { grid-template-columns:1fr; }
  .track-button { padding:17px 10px; min-height:91px; }
  .track-name { font-size:20px; }
  .track-style { font-size:14px; }
  .explanation-grid { grid-template-columns:1fr; gap:29px; margin-top:27px; }
  .explanation-number { margin-bottom:11px; font-size:22px; }
  .explanation-grid h3 { font-size:20px; margin-bottom:9px; }
  .explanation-grid p { font-size:17px; }
  .listen-section { padding-bottom:44px; }
  .research-section { padding:38px 0 39px; }
  .evidence-header { display:block; }
  .evidence-header h3 { font-size:20px; }
  .evidence-header p { margin-top:9px; }
  .evidence-list p { font-size:16px; }
  .care-note { padding:20px; gap:13px; }
  .care-note p { font-size:16px; }
  .care-note h3 { font-size:19px; }
  .download-grid { grid-template-columns:1fr; }
  .downloads-section { padding-bottom:37px; }
  .site-footer { padding:25px 0 32px; }
}
@media (max-width:380px) {
  .site-shell { padding:0 16px; }
  .brand { gap:12px; }
  .brand-copy strong { font-size:25px; }
  .brand-copy > span { font-size:12px; }
  .header-right { flex-wrap:wrap; gap:4px; }
  .main-nav { width:100%; gap:24px; }
  .languages { margin-left:-8px; }
  .hero { padding-top:23px; }
  h1 { font-size:32px; }
  .player { padding:22px 17px 0; }
  .piece-title { font-size:29px; }
  .piece-top { gap:8px; }
  .current-version { font-size:12px; padding:4px 8px; }
  .transport { gap:10px; }
  .play-button { min-width:124px; padding:13px 18px; }
  .step-button { width:44px; height:44px; flex-basis:44px; }
  .player-bottom { gap:4px 12px; }
  .advanced summary { font-size:15px; }
  .version-button { font-size:14px; }
  .care-note { padding:18px 15px; gap:11px; }
  .care-mark { width:24px; height:24px; flex-basis:24px; font-size:16px; line-height:23px; }
}
@media (prefers-reduced-motion:reduce) { :root { scroll-behavior:auto; } * { transition:none !important; } }