:root {
  --ink: #0a0f11;
  --glass: rgba(10, 16, 18, .66);
  --glass-2: rgba(255, 255, 255, .06);
  --line: rgba(255, 255, 255, .14);
  --line-2: rgba(255, 255, 255, .24);
  --paper: #f3ede2;
  --paper-2: rgba(243, 237, 226, .74);
  --paper-3: rgba(243, 237, 226, .5);
  --gold: #dcb772;
  --gold-2: #f0d49a;
  --rose: #e98fa8;
  --jade: #93c2b8;
  --serif: 'RH Serif', 'Source Han Serif SC', 'Noto Serif SC', 'Songti SC', 'STZhongsong', 'STSong', 'SimSun', serif;
  --sans: 'RH Sans', 'Source Han Sans SC', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', sans-serif;
  --brush: 'RH Brush', 'Ma Shan Zheng', 'STKaiti', 'KaiTi', serif;
  --u: clamp(12px, 1.02vw, 22px);
  color-scheme: dark;
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; overflow: hidden; background: var(--ink); color: var(--paper); font-family: var(--sans); font-size: calc(var(--u) * 1.05); -webkit-font-smoothing: antialiased; }
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; }

#stage { position: fixed; inset: 0; width: 100vw; height: 100vh; display: block; cursor: grab; touch-action: none; }
#stage.grabbing { cursor: grabbing; }

/* ---------- 画面层 ---------- */
.kneel, .closeup { position: fixed; inset: 0; overflow: hidden; opacity: 0; pointer-events: none; transition: opacity 1.2s ease; }
.kneel.show, .closeup.show { opacity: 1; }
.kneel .bg { position: absolute; inset: -4%; width: 108%; height: 108%; object-fit: cover; transform-origin: 50% 28%; filter: saturate(.92) contrast(1.04); }
.kneel .fg { position: absolute; left: 0; right: 0; bottom: 0; width: 100%; height: 100%; object-fit: cover; object-position: 50% 100%; transform-origin: 50% 100%; filter: brightness(.92); }
.closeup img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transform: scale(1.1); transition: transform 14s cubic-bezier(.2,.6,.2,1); }
.closeup.show img { transform: scale(1.0); }
.closeup::after { content: ''; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(0,0,0,.15), transparent 30%, transparent 60%, rgba(0,0,0,.55)); }

.fg-overlay { position: fixed; left: 0; bottom: 0; width: 100vw; height: 100vh; object-fit: cover; object-position: 50% 100%; pointer-events: none; opacity: 0; transition: opacity .8s ease; transform-origin: 50% 100%; filter: brightness(.9) saturate(.9); }
.fg-overlay[data-mode="walk"] { filter: brightness(.95) saturate(.92); }
body.panel-on .fg-overlay { opacity: 0 !important; }

.fx-vignette { position: fixed; inset: 0; pointer-events: none; background: radial-gradient(120% 90% at 50% 45%, transparent 55%, rgba(0,0,0,.55) 100%); }
.fx-grain { position: fixed; inset: -50%; pointer-events: none; opacity: .09; mix-blend-mode: overlay;
  animation: grain 1.2s steps(6) infinite; }
@keyframes grain { 0% { transform: translate(0,0) } 20% { transform: translate(-3%,2%) } 40% { transform: translate(2%,-3%) } 60% { transform: translate(-2%,-1%) } 80% { transform: translate(3%,3%) } 100% { transform: translate(0,0) } }
.fx-pain { position: fixed; inset: 0; pointer-events: none; opacity: 0; background: radial-gradient(110% 80% at 50% 40%, transparent 50%, rgba(120, 8, 16, .85) 100%); }
.fx-pain.pulse { animation: pain 1.5s ease-out; }
@keyframes pain { 0% { opacity: 0 } 18% { opacity: var(--pain, .5) } 100% { opacity: 0 } }
.fx-fade { position: fixed; inset: 0; background: #000; opacity: 0; pointer-events: none; transition: opacity .9s ease; }
.fx-fade.on { opacity: 1; }

/* ---------- 品牌与底部控制 ---------- */
.brand { position: fixed; top: calc(var(--u) * 1.3); left: calc(var(--u) * 1.7); display: flex; align-items: center; gap: calc(var(--u) * .8); pointer-events: none; opacity: 0; transition: opacity 1s; text-shadow: 0 2px 12px rgba(0,0,0,.5); }
body.running .brand { opacity: 1; }
.brand-mark { font-family: var(--brush); font-size: calc(var(--u) * 2.3); line-height: 1; color: var(--paper); }
.brand-sub { font-family: var(--serif); font-size: calc(var(--u) * .78); letter-spacing: .18em; color: var(--paper-2); display: flex; flex-direction: column; gap: .2em; }
.brand-sub span { font-family: var(--sans); letter-spacing: .08em; font-size: .86em; color: var(--paper-3); }

.dock { position: fixed; left: 0; right: 0; bottom: 0; height: calc(var(--u) * 4.1); display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 2fr) auto; align-items: center; gap: calc(var(--u) * 1.2); padding: 0 calc(var(--u) * 1.4);
  background: linear-gradient(180deg, transparent, rgba(4, 8, 9, .72) 40%, rgba(4, 8, 9, .88)); transform: translateY(110%); transition: transform .8s cubic-bezier(.2,.8,.2,1); z-index: 30; }
body.running .dock { transform: none; }
.where { display: flex; align-items: baseline; gap: .7em; white-space: nowrap; overflow: hidden; }
.where b { font-family: var(--serif); font-weight: 600; font-size: calc(var(--u) * 1.15); letter-spacing: .06em; }
.where span { color: var(--paper-3); font-size: calc(var(--u) * .78); }
.steps { display: flex; align-items: center; gap: .6em; margin-top: .3em; color: var(--paper-2); font-size: calc(var(--u) * .78); }
.step-dots { display: flex; gap: 5px; }
.step-dots i { width: 18px; height: 3px; border-radius: 2px; background: rgba(255,255,255,.18); }
.step-dots i.done { background: rgba(220,183,114,.5); }
.step-dots i.on { background: var(--gold); }
.path { position: relative; display: flex; justify-content: space-between; align-items: center; padding: 0 1em; }
.path::before { content: ''; position: absolute; left: 1.6em; right: 1.6em; top: calc(50% - 7px); height: 1px; background: linear-gradient(90deg, rgba(220,183,114,.6), rgba(255,255,255,.18)); }
.node { position: relative; background: none; border: 0; padding: 0; display: flex; flex-direction: column; align-items: center; gap: 6px; color: var(--paper-3); font-size: calc(var(--u) * .72); font-family: var(--serif); letter-spacing: .1em; }
.node i { width: 11px; height: 11px; transform: rotate(45deg); border: 1px solid rgba(255,255,255,.4); background: var(--ink); transition: all .4s; }
.node.done i { background: rgba(220,183,114,.55); border-color: transparent; }
.node.on i { background: var(--gold); border-color: var(--gold-2); box-shadow: 0 0 14px rgba(240,212,154,.8); transform: rotate(45deg) scale(1.3); }
.node.on span { color: var(--paper); }
.node:hover span { color: var(--paper); }
.dock-right { display: flex; align-items: center; gap: calc(var(--u) * .45); }
.dbtn { height: calc(var(--u) * 2.3); min-width: calc(var(--u) * 2.3); padding: 0 .75em; border-radius: 999px; border: 1px solid var(--line); background: rgba(255,255,255,.06); color: var(--paper); font-size: calc(var(--u) * 1); display: inline-flex; align-items: center; justify-content: center; gap: .4em; transition: background .2s, border-color .2s, transform .15s; }
.dbtn:hover { background: rgba(255,255,255,.14); border-color: var(--line-2); }
.dbtn:active { transform: scale(.96); }
.dbtn.on { color: var(--rose); border-color: rgba(233,143,168,.6); }
.dbtn.primary { background: var(--gold); color: #1b1408; border-color: transparent; font-weight: 600; padding: 0 1.1em 0 1.3em; font-family: var(--serif); letter-spacing: .08em; }
.dbtn.primary em { font-style: normal; font-size: 1.3em; line-height: 0; }
.dbtn.primary:hover { background: var(--gold-2); }
.dbtn:disabled { opacity: .4; cursor: default; }
.clock { background: none; border: 0; font-variant-numeric: tabular-nums; color: var(--paper-2); font-size: calc(var(--u) * .95); letter-spacing: .05em; padding: 0 .6em; }
.clock.paused { color: var(--rose); }
.clock.over { color: var(--rose); }

/* ---------- 标题、字幕、歌词 ---------- */
.station-title { position: fixed; left: calc(var(--u) * 4.5); top: 34%; pointer-events: none; opacity: 0; transform: translateY(14px); transition: opacity 1.1s ease, transform 1.4s cubic-bezier(.2,.8,.2,1); text-shadow: 0 3px 30px rgba(0,0,0,.6); }
.station-title.show { opacity: 1; transform: none; }
.st-no { font-family: var(--serif); letter-spacing: .5em; font-size: calc(var(--u) * .9); color: var(--gold-2); }
.st-name { font-family: var(--brush); font-size: calc(var(--u) * 6.4); line-height: 1.1; margin: .12em 0 .15em; }
.st-sub { font-family: var(--serif); font-size: calc(var(--u) * 1.35); color: var(--paper-2); letter-spacing: .14em; }

.caption { position: fixed; left: 50%; top: 46%; transform: translate(-50%, -50%); width: min(78vw, 1200px); text-align: center; font-family: var(--serif); font-size: calc(var(--u) * 2.1); line-height: 1.6; letter-spacing: .12em; opacity: 0; transition: opacity 1.2s ease; pointer-events: none; text-shadow: 0 2px 24px rgba(0,0,0,.85); }
.caption.show { opacity: 1; }
.caption.low { top: auto; bottom: calc(var(--u) * 7.2); transform: translateX(-50%); font-size: calc(var(--u) * 1.55); }
.caption.film { font-size: calc(var(--u) * 2.3); }

.lyric-bar { position: fixed; left: 50%; bottom: calc(var(--u) * 5.2); transform: translate(-50%, 12px); opacity: 0; transition: opacity .5s, transform .5s; pointer-events: none; z-index: 22; text-align: center; }
.lyric-bar.show { opacity: 1; transform: translate(-50%, 0); }
.ly-main { font-family: var(--serif); font-size: calc(var(--u) * 2.4); letter-spacing: .28em; color: rgba(243,237,226,.45); text-shadow: 0 2px 20px rgba(0,0,0,.9); white-space: nowrap; }
.ly-main .sung { color: var(--gold-2); text-shadow: 0 0 22px rgba(240,212,154,.5), 0 2px 20px rgba(0,0,0,.9); }
.ly-sub { color: var(--paper-3); font-size: calc(var(--u) * .9); margin-top: .3em; }

/* ---------- 声源标记 ---------- */
#markers { position: fixed; inset: 0; pointer-events: none; z-index: 12; }
.marker { position: absolute; left: 0; top: 0; width: 0; height: 0; border: 0; background: none; padding: 0; pointer-events: auto; opacity: 0; transition: opacity .8s; }
.marker.show { opacity: 1; }
.marker.off { opacity: 0 !important; pointer-events: none; }
.marker .core { position: absolute; left: -9px; top: -9px; width: 18px; height: 18px; border-radius: 50%; background: radial-gradient(circle, #fff7e6 0%, var(--gold) 60%, rgba(220,183,114,0) 100%); box-shadow: 0 0 24px 6px rgba(240,212,154,.55); }
.marker .ring { position: absolute; left: -40px; top: -40px; width: 80px; height: 80px; border-radius: 50%; border: 1.5px solid rgba(240,212,154,.85); animation: ripple 2.4s ease-out infinite; }
.marker .r2 { animation-delay: 1.2s; }
@keyframes ripple { 0% { transform: scale(.25); opacity: .9 } 100% { transform: scale(1.35); opacity: 0 } }
.marker .mlabel { position: absolute; left: 50%; top: 34px; transform: translateX(-50%); white-space: nowrap; font-family: var(--serif); font-size: calc(var(--u) * 1.15); letter-spacing: .2em; padding: .3em .9em; border-radius: 999px; background: rgba(8,12,13,.55); border: 1px solid rgba(240,212,154,.4); color: var(--gold-2); }
.marker:hover .core { box-shadow: 0 0 34px 12px rgba(240,212,154,.7); }
.dir-hint { position: fixed; top: 64%; transform: translateY(-50%); padding: .5em 1em; border-radius: 999px; background: rgba(8,12,13,.6); border: 1px solid rgba(240,212,154,.35); color: var(--gold-2); font-family: var(--serif); letter-spacing: .12em; opacity: 0; transition: opacity .5s; pointer-events: none; z-index: 12; }
.dir-hint.show { opacity: 1; animation: nudge 1.6s ease-in-out infinite; }
.dir-hint.left { left: calc(var(--u) * 1.5); }
.dir-hint.right { right: calc(var(--u) * 1.5); }
@keyframes nudge { 50% { margin-left: 6px; } }

/* ---------- 面板 ---------- */
.panel { position: fixed; z-index: 25; right: calc(var(--u) * 1.6); top: calc(var(--u) * 1.6); max-height: calc(100vh - var(--u) * 6.8); width: min(44vw, 820px); overflow: auto; padding: calc(var(--u) * 1.6) calc(var(--u) * 1.8);
  background: var(--glass); border: 1px solid var(--line); border-radius: 22px; backdrop-filter: blur(22px) saturate(1.15); -webkit-backdrop-filter: blur(22px) saturate(1.15);
  box-shadow: 0 30px 80px rgba(0,0,0,.45); opacity: 0; transform: translateX(24px); pointer-events: none; transition: opacity .6s ease, transform .7s cubic-bezier(.2,.8,.2,1); scrollbar-width: thin; }
.panel.wide { left: 50%; right: auto; width: min(92vw, 1500px); transform: translate(-50%, 18px); top: calc(var(--u) * 4.4); }
.panel.show { opacity: 1; transform: none; pointer-events: auto; }
.panel.wide.show { transform: translate(-50%, 0); }
.panel-close { position: absolute; top: calc(var(--u) * .8); right: calc(var(--u) * .9); width: 2.1em; height: 2.1em; border-radius: 50%; border: 1px solid var(--line); background: rgba(255,255,255,.04); font-size: calc(var(--u) * 1.1); color: var(--paper-2); }
.panel-close:hover { background: rgba(255,255,255,.12); }
.eyebrow { font-size: calc(var(--u) * .78); letter-spacing: .3em; color: var(--gold); font-family: var(--serif); }
.panel h2 { font-family: var(--serif); font-weight: 600; font-size: calc(var(--u) * 2.05); line-height: 1.3; margin: .3em 0 .55em; letter-spacing: .04em; padding-right: 2em; }
.panel-body { display: flex; flex-direction: column; gap: calc(var(--u) * .9); }
.lead { margin: 0; color: var(--paper-2); font-size: calc(var(--u) * 1.12); line-height: 1.7; }
.note { margin: 0; color: var(--paper-3); font-size: calc(var(--u) * .85); line-height: 1.6; }
.muted { color: var(--paper-3); font-size: calc(var(--u) * .88); }
.ok { color: var(--jade); }
.row { display: flex; flex-wrap: wrap; gap: calc(var(--u) * .6); align-items: center; }
.row.tight { gap: calc(var(--u) * .35); }
.row.between { justify-content: space-between; }
.hidden { display: none !important; }

.btn { border: 1px solid var(--line-2); background: rgba(255,255,255,.07); border-radius: 999px; padding: .55em 1.25em; font-size: calc(var(--u) * 1.02); display: inline-flex; align-items: center; gap: .5em; transition: background .2s, border-color .2s, transform .15s, opacity .2s; white-space: nowrap; }
.btn:hover { background: rgba(255,255,255,.15); }
.btn:active { transform: scale(.97); }
.btn:disabled { opacity: .45; cursor: progress; }
.btn.primary { background: var(--gold); color: #1c1507; border-color: transparent; font-weight: 600; }
.btn.primary:hover { background: var(--gold-2); }
.btn.gold { border-color: rgba(220,183,114,.7); color: var(--gold-2); }
.btn.ghost { background: transparent; }
.btn.small { font-size: calc(var(--u) * .86); padding: .42em 1em; }
.btn.play .pi { width: 0; height: 0; border-left: .62em solid currentColor; border-top: .38em solid transparent; border-bottom: .38em solid transparent; }
.btn.play.on { background: rgba(220,183,114,.2); border-color: var(--gold); color: var(--gold-2); }
.btn.play.on .pi { border: 0; width: .62em; height: .62em; background: currentColor; border-radius: 2px; }

.field { width: 100%; border: 1px solid var(--line-2); background: rgba(0,0,0,.28); border-radius: 12px; padding: .6em .9em; font-size: calc(var(--u) * 1.02); color: var(--paper); outline: none; transition: border-color .2s; }
.field:focus { border-color: var(--gold); }
.field.small { width: auto; padding: .35em .6em; font-size: calc(var(--u) * .9); }
.row .field { flex: 1 1 12em; width: auto; }
select.field { appearance: auto; }
textarea.field { resize: none; line-height: 1.6; }
.check { display: inline-flex; align-items: center; gap: .35em; color: var(--paper-2); font-size: calc(var(--u) * .9); }
input[type=range] { accent-color: var(--gold); width: 9em; }
.ctrl { display: inline-flex; align-items: center; gap: .5em; color: var(--paper-2); font-size: calc(var(--u) * .9); }
.val { font-variant-numeric: tabular-nums; min-width: 3.6em; color: var(--paper); }

.chips { display: flex; flex-wrap: wrap; gap: calc(var(--u) * .4); }
.chip { border: 1px solid var(--line-2); background: rgba(255,255,255,.05); border-radius: 999px; padding: .4em 1em; font-size: calc(var(--u) * .98); transition: all .2s; }
.chip:hover { background: rgba(255,255,255,.13); }
.chip.on { background: rgba(220,183,114,.22); border-color: var(--gold); color: var(--gold-2); }
.chip.rose.on { background: rgba(233,143,168,.2); border-color: var(--rose); color: #ffd5e0; }

.cards { display: grid; gap: calc(var(--u) * .8); }
.cards.two { grid-template-columns: 1fr 1fr; }
.cards.three { grid-template-columns: repeat(3, 1fr); }
.card { border: 1px solid var(--line); background: var(--glass-2); border-radius: 16px; padding: calc(var(--u) * 1) calc(var(--u) * 1.1); display: flex; flex-direction: column; gap: .5em; align-items: flex-start; }
.card-k { font-size: calc(var(--u) * .82); color: var(--jade); letter-spacing: .2em; }
.card-v { font-family: var(--serif); font-size: calc(var(--u) * 1.6); font-weight: 600; letter-spacing: .08em; }
.card-s { color: var(--paper-2); font-size: calc(var(--u) * .92); }
.card.rhythm { gap: .6em; }

.reveal { border-top: 1px dashed var(--line); padding-top: calc(var(--u) * .8); }
.reveal-body { display: none; }
.reveal.open .reveal-body { display: block; animation: rise .7s cubic-bezier(.2,.8,.2,1); }
.reveal-body p { margin: .3em 0; line-height: 1.75; color: var(--paper); font-size: calc(var(--u) * 1.08); }
@keyframes rise { from { opacity: 0; transform: translateY(10px); } }
.big { font-family: var(--serif); font-size: calc(var(--u) * 3); color: var(--gold-2); letter-spacing: .1em; line-height: 1.2; }
.big-line { font-family: var(--serif); font-size: calc(var(--u) * 1.45); color: var(--gold-2); letter-spacing: .06em; margin-top: .6em !important; }

.ai-out:empty { display: none; }
.ai-out { border: 1px solid rgba(147,194,184,.35); background: rgba(147,194,184,.07); border-radius: 16px; padding: calc(var(--u) * .9) calc(var(--u) * 1.1); display: flex; flex-direction: column; gap: .55em; animation: rise .6s; }
.ai-head { display: flex; align-items: center; gap: .8em; }
.src { font-size: calc(var(--u) * .76); padding: .2em .8em; border-radius: 999px; letter-spacing: .08em; }
.src.live { background: rgba(147,194,184,.2); color: #bfe6dd; border: 1px solid rgba(147,194,184,.5); }
.src.preset { background: rgba(255,255,255,.08); color: var(--paper-2); border: 1px dashed var(--line-2); }
.src.hand { background: rgba(233,143,168,.14); color: #ffd5e0; border: 1px solid rgba(233,143,168,.4); }
.thinking { color: var(--jade); letter-spacing: .1em; }
.thinking::after { content: ''; display: inline-block; width: 1.2em; animation: dots 1.2s steps(4) infinite; }
@keyframes dots { 0% { content: ''; } 25% { content: '·'; } 50% { content: '··'; } 75% { content: '···'; } }
.kw { display: flex; flex-wrap: wrap; gap: .5em; }
.kw span { font-family: var(--serif); font-size: calc(var(--u) * 1.6); color: var(--gold-2); padding: 0 .2em; }
.kw span + span::before { content: '·'; margin-right: .5em; color: var(--paper-3); }
.lines { margin: 0; padding-left: 1.1em; line-height: 1.7; color: var(--paper); }
.q { margin: 0; color: var(--paper); font-family: var(--serif); font-size: calc(var(--u) * 1.12); }
.reason, .tip { margin: 0; line-height: 1.7; font-size: calc(var(--u) * 1.05); }
.tags { display: flex; flex-wrap: wrap; gap: .4em; }
.tags span { font-size: calc(var(--u) * .86); padding: .25em .75em; border-radius: 8px; background: rgba(255,255,255,.08); border: 1px solid var(--line); }
.tags .saved { border-color: rgba(220,183,114,.5); color: var(--gold-2); }
.ver-title { font-family: var(--serif); font-size: calc(var(--u) * 1.5); color: var(--gold-2); }
.judge { display: flex; flex-direction: column; gap: .6em; }

.beatrow { display: flex; gap: calc(var(--u) * 2); justify-content: center; padding: calc(var(--u) * 1) 0; }
.beatdot { width: calc(var(--u) * 5.5); height: calc(var(--u) * 5.5); border-radius: 50%; border: 2px solid rgba(255,255,255,.3); display: grid; place-items: center; font-family: var(--serif); font-size: calc(var(--u) * 1.6); color: var(--paper-2); transition: all .12s; }
.beatdot.strong { width: calc(var(--u) * 7); height: calc(var(--u) * 7); font-size: calc(var(--u) * 2); }
.beatdot.lit { background: rgba(220,183,114,.35); border-color: var(--gold-2); color: #fff; box-shadow: 0 0 40px rgba(240,212,154,.6); transform: scale(1.06); }

/* 简谱 */
.score-box { background: rgba(250, 246, 238, .96); border-radius: 14px; padding: calc(var(--u) * .5) calc(var(--u) * .8); color: #1d1a16; overflow-x: auto; }
.score-box.learn { max-height: 46vh; overflow-y: auto; }
.score-box.mini { padding: calc(var(--u) * .3) calc(var(--u) * .5); }
.jianpu { width: 100%; height: auto; display: block; font-family: var(--sans); }
.jianpu .num { font-weight: 600; text-anchor: middle; fill: #1d1a16; font-family: 'RH Sans', 'Helvetica Neue', Arial, sans-serif; }
.jianpu .lyric { text-anchor: middle; fill: #3d362c; font-family: var(--serif); }
.jianpu .barno { fill: #9a8f7c; }
.jianpu .barline { stroke: #3a342a; stroke-width: 1.4; }
.jianpu .barline.thick { stroke-width: 4; }
.jianpu .uline { stroke: #1d1a16; stroke-width: 1.8; }
.jianpu .dash { stroke: #1d1a16; stroke-width: 2.4; }
.jianpu .dot { fill: #1d1a16; }
.jianpu .slur { fill: none; stroke: #3a342a; stroke-width: 1.3; }
.jianpu .slur.tie { stroke: #8a5a20; }
.jianpu .tri { text-anchor: middle; font-style: italic; fill: #3a342a; }
.jianpu .mord { fill: none; stroke: #1d1a16; stroke-width: 2; }
.jianpu .volta { fill: none; stroke: #3a342a; stroke-width: 1.2; }
.jianpu .volta-no { font-size: 14px; font-style: italic; fill: #3a342a; }
.jianpu .hl { fill: transparent; transition: fill .15s; }
.jianpu .note.on .hl { fill: rgba(220,183,114,.55); }
.jianpu .note.on .num { fill: #6a3d00; }
.jianpu .note.focus .hl { fill: rgba(233,143,168,.28); }
.jianpu .note.focus .num { fill: #a3284f; }
.jianpu.rhythm .num { font-size: 30px; }
.rhythm-box { background: rgba(250,246,238,.96); border-radius: 12px; padding: .2em .5em; width: 100%; }
.rhythm-box svg { max-height: 5.2em; }
.rhythm-box.wide svg { max-height: 4.6em; }

.toolbar { display: flex; flex-wrap: wrap; align-items: center; gap: calc(var(--u) * .7) calc(var(--u) * 1.2); }
.ai-box { border: 1px solid rgba(147,194,184,.3); border-radius: 14px; padding: .6em 1em; background: rgba(147,194,184,.05); }
.ai-box summary { cursor: pointer; color: #bfe6dd; letter-spacing: .12em; font-family: var(--serif); }
.ai-box[open] { display: flex; flex-direction: column; gap: .6em; }
.ai-box[open] summary { margin-bottom: .2em; }

.pair { display: grid; grid-template-columns: 4.5em 1fr auto; align-items: center; gap: calc(var(--u) * .8); }
.pair-l { font-family: var(--serif); color: var(--gold-2); letter-spacing: .1em; }
.blocks { display: grid; grid-template-columns: repeat(4, 1fr); gap: calc(var(--u) * .6); }
.block { border: 1px solid var(--line); border-radius: 14px; padding: .8em .9em; background: var(--glass-2); display: flex; flex-direction: column; gap: .5em; transition: all .5s; }
.block .b-text { font-family: var(--serif); font-size: calc(var(--u) * 1.12); }
.block .ab { margin-left: auto; font-family: var(--serif); font-size: calc(var(--u) * 1.4); color: var(--gold-2); min-width: 1.2em; text-align: center; }
.block.shown[data-part="A"] { border-color: rgba(147,194,184,.6); background: rgba(147,194,184,.1); }
.block.shown[data-part="B"] { border-color: rgba(233,143,168,.6); background: rgba(233,143,168,.1); }
.block .btn.play { padding: .4em .8em; }
.structure { display: grid; grid-template-columns: 1fr 1fr; gap: calc(var(--u) * .6); animation: rise .7s; }
.structure .note { grid-column: 1 / -1; }
.seg { border-radius: 14px; padding: .9em 1.1em; display: flex; flex-direction: column; gap: .3em; }
.seg b { font-family: var(--serif); font-size: calc(var(--u) * 1.35); }
.seg.a { background: rgba(147,194,184,.14); border: 1px solid rgba(147,194,184,.5); }
.seg.b { background: rgba(233,143,168,.12); border: 1px solid rgba(233,143,168,.5); }

.cols { display: grid; grid-template-columns: 1fr 1.2fr; gap: calc(var(--u) * 1.4); align-items: start; }
.col { display: flex; flex-direction: column; gap: calc(var(--u) * .7); min-width: 0; }
.col.scroll { max-height: 58vh; overflow: auto; padding-right: .4em; }
.step-no { font-family: var(--serif); color: var(--gold); letter-spacing: .16em; font-size: calc(var(--u) * .95); }
.editor { display: flex; flex-direction: column; gap: .5em; border-top: 1px dashed var(--line); padding-top: .7em; }
.grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .5em .9em; }
.grid .ctrl { justify-content: space-between; }
.timeline { margin: 0; padding: 0; list-style: none; display: flex; flex-direction: column; gap: .7em; }
.timeline li { display: grid; grid-template-columns: 4.4em 1fr; gap: .6em; padding: .7em .8em; border-radius: 12px; background: var(--glass-2); border: 1px solid var(--line); }
.t-st { font-family: var(--serif); color: var(--gold); }
.t-title { font-family: var(--serif); font-size: calc(var(--u) * 1.02); margin-bottom: .2em; }
.t-we, .t-ai { font-size: calc(var(--u) * .9); line-height: 1.6; color: var(--paper-2); }
.t-ai b { color: #bfe6dd; }
.t-we b { color: var(--gold-2); }
.duo { display: grid; grid-template-columns: 1fr 1fr; gap: .9em; }
.duo > div { border-radius: 12px; padding: .7em .9em; background: rgba(255,255,255,.05); border: 1px solid var(--line); }
.duo b { font-family: var(--serif); color: var(--gold-2); }
.duo .big-line { grid-column: 1 / -1; }

/* ---------- 教师抽屉 ---------- */
.drawer { position: fixed; z-index: 40; top: 0; right: 0; bottom: 0; width: min(420px, 90vw); background: rgba(8, 12, 13, .92); border-left: 1px solid var(--line); backdrop-filter: blur(16px); transform: translateX(105%); transition: transform .5s cubic-bezier(.2,.8,.2,1); padding: 1.2em 1.3em; overflow: auto; }
.drawer.show { transform: none; }
.drawer-head { display: flex; justify-content: space-between; align-items: center; font-family: var(--serif); font-size: 1.2em; position: relative; }
.drawer-head .panel-close { position: static; }
.d-sec { border-top: 1px solid var(--line); padding: 1em 0; display: flex; flex-direction: column; gap: .6em; }
.d-title { font-family: var(--serif); color: var(--gold); letter-spacing: .12em; }
.d-row { display: flex; justify-content: space-between; align-items: center; gap: .8em; }
.jump { display: flex; flex-wrap: wrap; gap: .4em; }
.jump .chip { font-size: .85em; }

/* ---------- 原谱、结束、开始 ---------- */
.score-modal { position: fixed; inset: 0; z-index: 50; background: rgba(0,0,0,.82); display: grid; place-items: center; opacity: 0; pointer-events: none; transition: opacity .4s; cursor: zoom-out; }
.score-modal.show { opacity: 1; pointer-events: auto; }
.score-modal img { max-height: 88vh; max-width: 92vw; border-radius: 8px; box-shadow: 0 20px 80px rgba(0,0,0,.6); }
.score-modal p { position: absolute; bottom: 1.2em; margin: 0; color: var(--paper-3); font-size: .85em; }

.end-card { position: fixed; inset: 0; z-index: 45; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 1.2em; background: radial-gradient(80% 70% at 50% 50%, rgba(20, 14, 8, .55), rgba(0,0,0,.88)); opacity: 0; pointer-events: none; transition: opacity 2.4s ease; text-align: center; }
.end-card.show { opacity: 1; pointer-events: auto; }
.end-mark { font-family: var(--brush); font-size: calc(var(--u) * 9); line-height: 1; color: var(--paper); text-shadow: 0 0 60px rgba(240,212,154,.35); }
.end-line { font-family: var(--serif); font-size: calc(var(--u) * 1.8); letter-spacing: .2em; color: var(--gold-2); margin: 0; }
.credits { margin-top: 1.4em; color: var(--paper-3); font-size: calc(var(--u) * .78); line-height: 1.8; }
.credits p { margin: 0; }

.start { position: fixed; inset: 0; z-index: 60; display: flex; align-items: center; padding-left: 8vw; background: linear-gradient(90deg, rgba(4,7,8,.92) 0%, rgba(4,7,8,.62) 42%, rgba(4,7,8,.08) 75%), var(--cover, none) center / cover no-repeat, #06090a; transition: opacity 1.4s ease, visibility 1.4s; }
.start.hide { opacity: 0; visibility: hidden; pointer-events: none; }
.start-inner { max-width: 44rem; }
.start-kicker { font-family: var(--serif); letter-spacing: .3em; color: var(--gold); font-size: calc(var(--u) * .92); }
.start-title { font-family: var(--brush); font-weight: 400; font-size: calc(var(--u) * 11); line-height: 1; margin: .12em 0 .1em -.05em; color: var(--paper); text-shadow: 0 6px 60px rgba(0,0,0,.6); }
.start-lead { font-family: var(--serif); font-size: calc(var(--u) * 1.55); line-height: 1.9; color: var(--paper-2); letter-spacing: .08em; margin: 0 0 1.8em; }
.start-btn { border: 0; background: var(--gold); color: #1b1408; font-family: var(--serif); font-weight: 600; letter-spacing: .2em; font-size: calc(var(--u) * 1.3); padding: .75em 1.6em .75em 2em; border-radius: 999px; display: inline-flex; align-items: center; gap: .6em; box-shadow: 0 10px 40px rgba(220,183,114,.3); transition: transform .2s, background .2s; }
.start-btn:hover { background: var(--gold-2); transform: translateY(-2px); }
.start-btn em { font-style: normal; font-size: 1.3em; line-height: 0; }
.start-meta { margin-top: 2.4em; display: flex; flex-direction: column; gap: .45em; color: var(--paper-3); font-size: calc(var(--u) * .85); }
#aiNote.ok { color: var(--jade); }

.toast { position: fixed; left: 50%; top: calc(var(--u) * 1.4); transform: translate(-50%, -20px); z-index: 70; background: rgba(8,12,13,.86); border: 1px solid var(--line-2); padding: .55em 1.2em; border-radius: 999px; opacity: 0; transition: all .4s; pointer-events: none; font-size: calc(var(--u) * .95); }
.toast.show { opacity: 1; transform: translate(-50%, 0); }

@media (max-width: 1100px) {
  .panel { width: min(62vw, 820px); }
  .cards.three, .blocks { grid-template-columns: 1fr 1fr; }
  .cols { grid-template-columns: 1fr; }
  .path span { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  .fx-grain { animation: none; }
  .marker .ring { animation: none; }
}

.card .score-box, .card .rhythm-box { width: 100%; }
.col > .btn, .col > details, .col > .reveal > .btn { align-self: flex-start; }

/* 流畅模式 */
body.lite .fx-grain { display: none; }
body.lite .panel, body.lite .drawer { backdrop-filter: none; -webkit-backdrop-filter: none; background: rgba(10, 16, 18, .92); }
body.lite .marker .ring { animation-duration: 3.2s; }

/* 亮场景下的文字可读性：标题与字幕背后加柔和暗晕 */
.station-title { isolation: isolate; }
.station-title::before { content: ''; position: absolute; left: -30%; right: -70%; top: -45%; bottom: -45%; z-index: -1; background: radial-gradient(closest-side, rgba(4, 7, 8, .5), rgba(4, 7, 8, 0)); pointer-events: none; }
.caption { isolation: isolate; }
.caption::before { content: ''; position: absolute; left: 8%; right: 8%; top: -60%; bottom: -60%; z-index: -1; background: radial-gradient(closest-side, rgba(4, 7, 8, .42), rgba(4, 7, 8, 0)); pointer-events: none; }