/* Hallmark · pre-emit critique: P5 H5 E4 S5 R5 V5 */
/* Hallmark · genre: editorial-playful · macrostructure: Long Document with Map/Diagram · theme: custom · vibe: living music lineages on warm paper · paper: oklch(97% 0.018 57) · accent: oklch(55% 0.145 33) coral · display: Fraunces · body: IBM Plex Sans SC · axes: light / high-contrast-serif / warm-coral · nav: N6 · footer: Ft2 · enrichment: hand-built SVG cherry and pine trees · knob delta: 3 containers → 2 trees / settled packing → branch + garland packing · contrast: pass (40–41) · slop: pass (42–45) · honest: pass (46) · chrome: pass (47) · tokens: pass (48) · responsive: pass (49) · icons: pass (30) · mobile: pass (34, 49, 50–57) */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; overflow-x: clip; }
body {
  margin: 0;
  overflow-x: clip;
  background: var(--color-paper);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  text-rendering: optimizeLegibility;
}
a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: 0.22em; }
button, input, select { font: inherit; color: inherit; }
button, select, input { min-height: 2.75rem; }
button { cursor: pointer; }
button:active { transform: translateY(1px); }
button:disabled, input:disabled, select:disabled { opacity: 0.55; cursor: not-allowed; }
:focus { outline: none; }
:focus-visible { outline: 3px solid var(--color-focus); outline-offset: 3px; }
.tnum, .tnum * { font-variant-numeric: tabular-nums; }
.skip-link {
  position: fixed; inset-block-start: var(--space-sm); inset-inline-start: var(--space-sm);
  z-index: var(--z-sticky); padding: var(--space-xs) var(--space-sm);
  background: var(--color-ink); color: var(--color-paper); transform: translateY(-180%);
}
.skip-link:focus { transform: none; }
.page-grid { width: min(100%, var(--page-max)); margin-inline: auto; padding-inline: var(--page-gutter); }
.reading-column { width: min(calc(100% - 2 * var(--page-gutter)), var(--reading-max)); margin-inline: auto; }

.nav-mast { display: grid; gap: var(--space-2xs); padding: var(--space-md) var(--page-gutter) 0; text-align: center; }
.mast-line { margin: 0; color: var(--color-neutral); font-family: var(--font-mono); font-size: var(--text-xs); letter-spacing: 0.06em; text-transform: uppercase; }
.mast-name { margin: var(--space-xs) 0 0; font-family: var(--font-display); font-size: clamp(1.53rem, 3.4vw, 2.72rem); font-weight: 800; letter-spacing: -0.035em; line-height: 0.82; }
.mast-name span { color: var(--color-accent-dark); font-size: 0.48em; letter-spacing: 0.03em; }
.mast-nav ul { display: flex; flex-wrap: wrap; justify-content: center; gap: var(--space-2xs) var(--space-lg); margin: var(--space-sm) 0 0; padding: 0; list-style: none; }
.mast-nav a { display: block; min-height: 2.75rem; padding-block: 0.42rem; white-space: nowrap; font-size: var(--text-sm); text-decoration: none; }
.mast-rule { width: 100%; height: 5px; margin: var(--space-xs) 0 0; border: 0; border-block: var(--rule-hair) solid var(--color-rule); }

.opening { display: grid; gap: var(--space-xl); padding-block: var(--space-xl) var(--space-2xl); }
.opening__copy { min-width: 0; }
.kicker { max-width: 32rem; margin: 0 0 var(--space-md); color: var(--color-accent-dark); font-family: var(--font-mono); font-size: var(--text-xs); letter-spacing: 0.06em; text-transform: uppercase; }
.opening h1 { min-width: 0; margin: 0; overflow-wrap: anywhere; font-family: var(--font-display); font-size: var(--text-display); font-weight: 800; letter-spacing: -0.065em; line-height: 0.82; }
.opening__lede { max-width: 45rem; margin: var(--space-xl) 0 0; font-size: clamp(1.15rem, 2vw, 1.55rem); line-height: 1.58; }
.opening__thesis { align-self: end; padding-block-start: var(--space-lg); border-block-start: var(--rule-hair) solid var(--color-rule); color: var(--color-ink-2); }
.opening__thesis p { margin: 0 0 var(--space-md); }
.opening__thesis a { display: inline-flex; min-height: 2.75rem; align-items: center; color: var(--color-accent-dark); font-weight: 600; white-space: nowrap; }

.stat-strip { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); border-block: var(--rule-hair) solid var(--color-rule); }
.stat-strip div { display: flex; min-width: 0; flex-direction: column; gap: var(--space-2xs); padding: var(--space-md) var(--space-xs); }
.stat-strip div:nth-child(even) { border-inline-start: var(--rule-hair) solid var(--color-rule-2); }
.stat-strip b { font-family: var(--font-display); font-size: clamp(1.8rem, 4vw, 3.15rem); line-height: 1; color: var(--color-accent-dark); }
.stat-strip span { color: var(--color-neutral); font-size: var(--text-xs); }
.dropcap { float: left; margin: 0.03em 0.1em -0.05em 0; color: var(--color-accent); font-family: var(--font-display); font-size: 4.7em; font-weight: 800; line-height: 0.8; }

.story-section { padding-block: var(--space-3xl); border-block-start: var(--rule-hair) solid var(--color-rule); }
.story-section--tint { width: 100%; max-width: none; background: var(--color-paper-2); color: var(--color-ink); }
.story-section--tint > * { width: min(100%, calc(var(--page-max) - 2 * var(--page-gutter))); margin-inline: auto; }
.story-head { display: grid; gap: var(--space-md); max-width: 51rem; margin-block-end: var(--space-xl); }
.story-head--wide { max-width: 66rem; }
.story-head h2, .method h2 { min-width: 0; margin: 0; font-family: var(--font-display); font-size: clamp(1.44rem, 3.4vw, 3.2rem); font-weight: 650; letter-spacing: -0.045em; line-height: 1; overflow-wrap: anywhere; }
.story-head p { margin: 0; color: var(--color-neutral); font-size: var(--text-lg); }

.mode-row { display: flex; flex-wrap: wrap; gap: var(--space-xs); margin-block-end: var(--space-xl); }
.mode-row button, .quiet-button, .load-more {
  border: var(--rule-hair) solid var(--color-rule); border-radius: 999px;
  background: var(--color-paper); color: var(--color-ink-2); padding: var(--space-xs) var(--space-md);
  transition: transform var(--dur-micro) var(--ease-out), background-color var(--dur-micro) var(--ease-out), color var(--dur-micro) var(--ease-out);
  white-space: nowrap;
}
.mode-row button[aria-pressed="true"] { background: var(--color-accent-dark); color: var(--color-accent-ink); border-color: var(--color-accent-dark); }
.rank-item { counter-increment: rank; display: grid; grid-template-columns: 2.5rem minmax(0, 1fr) auto auto; gap: var(--space-sm); align-items: center; min-height: 4rem; border-block-start: var(--rule-hair) solid var(--color-rule-2); }
.rank-item::before { content: counter(rank, decimal-leading-zero); color: var(--color-muted); font-family: var(--font-mono); font-size: var(--text-xs); }
.rank-item__content { display: grid; min-width: 0; width: 100%; grid-template-columns: minmax(7rem, 0.7fr) minmax(4rem, 1fr); gap: var(--space-sm); align-items: center; padding: var(--space-xs) 0; }
.rank-item__name { min-width: 0; font-size: 0.8rem; font-weight: 600; overflow-wrap: anywhere; }
.rank-item__name small { display: block; color: var(--color-muted); font-weight: 400; }
.rank-item__track { height: 0.5rem; background: var(--color-paper-3); }
.rank-item__bar { display: block; height: 100%; background: var(--color-accent); transform-origin: left; }
.rank-item__value { font-family: var(--font-mono); font-size: var(--text-sm); }
.rank-item__choose { min-height: 2.75rem; border: 0; background: transparent; color: var(--color-accent-dark); text-decoration: underline; text-underline-offset: 0.22em; white-space: nowrap; }
.chart-note { margin: var(--space-sm) 0 var(--space-xl); color: var(--color-neutral); font-size: var(--text-xs); }
/* Hallmark · component: Map/Diagram · genre: editorial-playful · custom-craft: hand-built cherry and pine trees · states: default/hover/focus/active/disabled/loading/error/success */
.artist-atlas { border-block: var(--rule-hair) solid var(--color-rule); padding-block: var(--space-lg); }
.atlas-summary { margin: 0 0 var(--space-md); color: var(--color-neutral); font-family: var(--font-mono); font-size: var(--text-xs); }
.atlas-cloud { min-width: 0; }
.atlas-stage { position: relative; overflow-x: auto; overflow-y: clip; border-block: var(--rule-hair) solid var(--color-rule-2); background: linear-gradient(180deg, var(--color-paper) 0 68%, var(--color-paper-2)); scrollbar-color: var(--color-rule) transparent; touch-action: pan-x pan-y; }
.atlas-stage[data-state="loading"] { opacity: 0.65; }
.atlas-stage[data-state="error"] { border-color: var(--color-error); }
.atlas-stage[data-state="success"], .atlas-stage[data-state="ready"] { opacity: 1; }
/* 筛选年代时整棵树重绘：用轻微模糊把两套节点布局的交叉渐变糊成一次「形变」，
   避免看到新旧两组气泡重叠。刷新即重建 DOM，动画随元素创建自动播放。 */
.atlas-stage[data-state="ready"] { animation: atlas-refresh 240ms var(--ease-out); }
@keyframes atlas-refresh { from { filter: blur(2px); opacity: 0.6; } }
.atlas-scene { display: block; width: 100%; min-width: 58rem; height: auto; }
.atlas-tree { --tree-scale: 1; transform: scale(var(--tree-scale)); transform-box: view-box; transform-origin: var(--atlas-origin-x) var(--atlas-origin-y); transition: transform var(--dur-short) var(--ease-out), opacity var(--dur-short) var(--ease-out); }
.atlas-tree__label { fill: var(--color-ink); font-family: var(--font-display); font-size: 17px; font-weight: 760; text-anchor: middle; }
.atlas-tree__count { fill: var(--color-neutral); font-family: var(--font-mono); font-size: 10px; text-anchor: middle; }
.atlas-tree__art { pointer-events: none; }
.atlas-tree__ground { fill: var(--color-tree-ground); opacity: 0.14; }
.atlas-tree__canopy { stroke-linejoin: round; }
/* 花冠由多层圆团叠出蓬松体积：底层最深最大，中层稍浅，顶层是左上角的高光 */
.atlas-tree__canopy--cherry circle { fill: var(--color-cherry-canopy); opacity: 0.26; }
.atlas-tree__canopy--cherry-mid circle { fill: color-mix(in oklch, var(--color-cherry-canopy) 78%, white); opacity: 0.3; }
.atlas-tree__canopy--cherry-light circle { fill: color-mix(in oklch, var(--color-cherry-canopy) 52%, white); opacity: 0.34; }
/* 细枝：比主枝更细一档，藏在花冠里 */
.atlas-tree__twig { fill: none; stroke: var(--color-tree-bark-dark); stroke-linecap: round; stroke-width: 3; opacity: 0.55; }
.atlas-tree__canopy--pine { fill: var(--color-pine-canopy); opacity: 0.18; stroke: var(--color-pine-canopy); stroke-width: 3; }
.atlas-pine-tiers { pointer-events: none; }
.atlas-branch__label { fill: var(--color-tree-bark-dark); font-family: var(--font-mono); font-size: 10px; font-weight: 700; letter-spacing: 0.04em;
  paint-order: stroke; stroke: var(--color-paper); stroke-width: 3px; stroke-linejoin: round; }
.atlas-pine-tier__label { fill: var(--color-pine-era); font-family: var(--font-mono); font-size: 10px; font-weight: 700; letter-spacing: 0.04em; text-anchor: start; }
/* 树干后画且填深一档：枝条的根部藏进树干，不会露出画到树干上的线头 */
.atlas-tree__trunk { fill: color-mix(in oklch, var(--color-tree-bark) 62%, var(--color-tree-bark-dark)); stroke: var(--color-tree-bark-dark); stroke-width: 3; }
.atlas-tree__trunk--pine { opacity: 0.86; }
.atlas-tree__branch { fill: none; stroke: var(--color-tree-bark-dark); stroke-linecap: round; stroke-linejoin: round; stroke-width: 7; opacity: 0.72; }
.atlas-tree__garland { fill: none; stroke: var(--color-pine-garland); stroke-dasharray: 5 7; stroke-linecap: round; stroke-width: 2; opacity: 0.72; }
.atlas-node { cursor: pointer; transform-box: fill-box; transform-origin: center; transition: transform var(--dur-short) var(--ease-out), opacity var(--dur-short) var(--ease-out); }
.atlas-node__halo { fill: var(--node-color); opacity: 0.23; transform-box: fill-box; transform-origin: center; animation: atlas-breathe 2.8s var(--ease-in-out) var(--breath-delay) infinite; }
.atlas-node__disc { fill: color-mix(in oklch, var(--node-color) 32%, var(--color-paper)); stroke: color-mix(in oklch, var(--node-color) 70%, var(--color-ink)); stroke-width: 1.3; }
.atlas-node__image { clip-path: circle(47% at 50% 50%); opacity: 0; transition: opacity var(--dur-short) var(--ease-out); }
.atlas-node.has-portrait .atlas-node__image { opacity: 1; }
.atlas-node.has-portrait .atlas-node__initials { opacity: 0; }
.atlas-node__initials { fill: var(--color-ink); font-family: var(--font-display); font-size: var(--initial-size); font-weight: 800; pointer-events: none; text-anchor: middle; dominant-baseline: middle; transition: opacity var(--dur-short) var(--ease-out); }
/* 艺人名：每棵树共用一条浮动标签，排在所有气泡之后 → 永远压在最上层；
   纸色描边打底，压在树与头像上也读得清。 */
.atlas-hover-label {
  pointer-events: none; text-anchor: middle;
  fill: var(--color-ink); font-family: var(--font-body); font-size: 12px; font-weight: 600;
  paint-order: stroke; stroke: var(--color-paper); stroke-width: 4px; stroke-linejoin: round;
}
.atlas-hover-label[hidden] { display: none; }
.atlas-node--kpop .atlas-node__disc { stroke-dasharray: 3 2; stroke-width: 2; }
.atlas-node:focus-visible { outline: none; }
.atlas-node:focus-visible .atlas-node__halo { fill: none; stroke: var(--color-focus); stroke-width: 4; opacity: 1; animation: none; }
.atlas-node:active { transform: scale(1.04); }
.atlas-node.is-selected .atlas-node__disc { stroke: var(--color-ink); stroke-width: 3.5; }
.atlas-node[aria-disabled="true"] { cursor: not-allowed; opacity: 0.45; }
.atlas-node[data-state="loading"] { opacity: 0.6; }
.atlas-node[data-state="error"] .atlas-node__disc { stroke: var(--color-error); }
.atlas-node[data-state="success"], .atlas-node[data-state="ready"] { opacity: 1; }
.atlas-detail { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: var(--space-md); margin-block-start: var(--space-md); padding: var(--space-lg); border: var(--rule-hair) solid var(--atlas-detail-color); background: var(--atlas-detail-surface); }
.atlas-detail--cherry { --atlas-detail-color: var(--color-jpop-node); --atlas-detail-surface: var(--color-paper-rose); --atlas-detail-mark-surface: var(--color-paper); }
.atlas-detail--pine { --atlas-detail-color: var(--color-english-node); --atlas-detail-surface: var(--color-card-blue); --atlas-detail-mark-surface: var(--color-card-blue); }
/* 有头像取色时，卡片底色换成该头像的两个主色渐变（浅色调，正文对比度不受影响）。
   描边不再用饱和的樱花/松树色——那是品牌色、不属于这张卡——改从底色推导出同色相的深一档发丝线；
   樱花/松树的身份挪到左侧书脊色带（与并排听页唱片内页的红标色带同一语汇）；
   立体感复用本页记录卡的硬偏移纸叠影（无模糊），不引入 Material 那套悬浮层语言——
   影子取底色次色与墨色的混合，是这张卡自己底色的深色版，右下两条边同时承担轮廓与厚度。 */
.atlas-detail.has-tones {
  background: linear-gradient(135deg, var(--atlas-detail-tone-1), var(--atlas-detail-tone-2));
  border-color: color-mix(in oklch, var(--atlas-detail-tone-1) 65%, var(--color-ink) 35%);
  /* 左侧书脊跟着卡片底色走：同色相、压深一档，而不是固定的樱花红/松树蓝 */
  border-inline-start: var(--space-2xs) solid color-mix(in oklch, var(--atlas-detail-tone-1) 52%, var(--color-ink) 48%);
  box-shadow: 5px 5px 0 color-mix(in oklch, var(--atlas-detail-tone-2) 45%, var(--color-ink) 55%);
}
/* 卡内曲目小卡与头像圆框同样退成底色推导色，否则会残留一圈原来的红/蓝，比外框更刺眼 */
.atlas-detail.has-tones .atlas-detail__songs li,
.atlas-detail.has-tones .atlas-detail__mark { border-color: color-mix(in oklch, var(--atlas-detail-tone-1) 55%, var(--color-ink) 30%); }
/* 换艺人时只让底色与描边过渡；入场动画由 JS 只在卡片"从无到有"时加 is-enter，连点排行不重播 */
.atlas-detail { transition: background var(--dur-short) var(--ease-out), border-color var(--dur-short) var(--ease-out); }
@media (prefers-reduced-motion: no-preference) {
  .atlas-detail.is-enter { animation: atlasDetailIn 180ms var(--ease-out) both; }
  @keyframes atlasDetailIn { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: none; } }
}
.atlas-detail[hidden] { display: none; }
.atlas-detail__mark { display: grid; width: clamp(3.5rem, 8vw, 6rem); height: clamp(3.5rem, 8vw, 6rem); place-items: center; align-self: start; border: var(--rule-hair) solid var(--atlas-detail-color); border-radius: 50%; background: var(--atlas-detail-mark-surface); color: var(--color-accent-dark); font-family: var(--font-display); font-size: var(--text-xl); font-weight: 800; }
.atlas-detail__mark img { width: 100%; height: 100%; border-radius: inherit; object-fit: cover; }
.atlas-detail__body { min-width: 0; }
.atlas-detail__eyebrow { margin: 0; color: var(--color-neutral); font-family: var(--font-mono); font-size: var(--text-xs); }
.atlas-detail h3 { margin: var(--space-2xs) 0 var(--space-sm); font-family: var(--font-display); font-size: var(--text-xl); line-height: var(--leading-tight); }
.atlas-detail dl { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-sm) var(--space-lg); margin: 0; }
.atlas-detail dl div { min-width: 0; padding-block-start: var(--space-xs); border-block-start: var(--rule-hair) solid var(--color-rule); }
.atlas-detail dt { color: var(--color-neutral); font-family: var(--font-mono); font-size: var(--text-xs); }
.atlas-detail dd { margin: var(--space-3xs) 0 0; font-size: var(--text-sm); overflow-wrap: anywhere; }
.atlas-detail__note { margin: var(--space-md) 0 0; padding-inline-start: var(--space-sm); border-inline-start: var(--rule-hair) solid var(--color-rule); color: var(--color-neutral); font-size: var(--text-sm); line-height: 1.5; }
.atlas-detail__actions { margin: var(--space-md) 0 0; }
.atlas-detail__rank {
  min-height: 2.25rem; padding: var(--space-3xs) 0; border: 0; background: none;
  color: var(--color-accent-dark); font-size: var(--text-sm);
  text-decoration: underline; text-underline-offset: 0.22em;
}
.atlas-detail__rank:hover { color: var(--color-ink); }
.atlas-detail__numbers { margin: var(--space-md) 0 var(--space-xs); color: var(--color-neutral); font-size: var(--text-sm); }
.atlas-detail__numbers strong { color: var(--color-ink); font-variant-numeric: tabular-nums; }
.atlas-detail__songs { margin: var(--space-md) 0 0; }
.atlas-detail__songs > span { display: block; margin-block-end: var(--space-xs); color: var(--color-neutral); font-family: var(--font-mono); font-size: var(--text-xs); }
/* 宽屏下歌曲列表用 CSS columns 流式分 2～3 列，避免大片留白 */
.atlas-detail__songs ol { margin: 0; padding: 0; columns: 13rem; column-gap: var(--space-sm); list-style: none; }
.atlas-detail__songs li { min-width: 0; margin-block-end: var(--space-2xs); padding: var(--space-2xs) var(--space-xs); border: var(--rule-hair) solid var(--atlas-detail-color); background: var(--color-paper); break-inside: avoid; }
.atlas-detail__songs li > div { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: var(--space-2xs); align-items: baseline; }
.atlas-detail__songs b { min-width: 0; overflow-wrap: anywhere; font-size: var(--text-xs); line-height: 1.25; }
.atlas-detail__songs strong { color: var(--color-ink-2); font-family: var(--font-mono); font-size: var(--text-xs); font-variant-numeric: tabular-nums; white-space: nowrap; cursor: help; }
.atlas-detail__songs p { display: flex; flex-wrap: wrap; gap: var(--space-2xs); margin: var(--space-3xs) 0 0; }
.atlas-detail__songs a { display: inline-block; padding: var(--space-3xs) var(--space-xs); border: var(--rule-hair) solid color-mix(in oklch, var(--atlas-detail-color) 48%, var(--color-rule)); border-radius: 999px; background: var(--color-paper); color: var(--color-ink); font-size: var(--text-xs); line-height: 1.2; text-decoration: none; white-space: nowrap; transition: background var(--dur-micro) var(--ease-out), color var(--dur-micro) var(--ease-out), transform var(--dur-micro) var(--ease-out); }
.atlas-detail__songs a:hover { background: var(--atlas-detail-color); color: var(--color-accent-ink); }
.atlas-detail__songs a:focus-visible { outline: 3px solid var(--color-focus); outline-offset: 2px; }
.atlas-detail__songs a:active { transform: translateY(1px); }
.atlas-detail__songs small { color: var(--color-muted); font-size: var(--text-xs); }
@keyframes atlas-breathe { 0%, 100% { opacity: 0.16; transform: scale(0.9); } 50% { opacity: 0.38; transform: scale(1.14); } }
/* ---------- 树下排行：樱花树 / 松树 各一列，默认折叠 ---------- */
.tree-ranks { display: grid; gap: var(--space-md); margin-block-start: var(--space-md); }
.tree-rank { overflow: clip; border: var(--rule-hair) solid var(--color-rule); border-radius: 12px; background: color-mix(in oklch, var(--color-paper) 72%, transparent); }
.tree-rank--cherry { border-block-start: 3px solid var(--color-jpop-node); }
/* 松树卡片：与松树同一灰绿语汇（背景、标题、进度条同步呼应） */
.tree-rank--pine { border-block-start: 3px solid var(--color-pine-canopy); background: color-mix(in oklch, var(--color-pine-canopy) 16%, var(--color-paper)); }
.tree-rank--pine .tree-rank__title { color: color-mix(in oklch, var(--color-pine-canopy) 58%, var(--color-ink)); }
.tree-rank--pine .tree-rank__chevron { color: color-mix(in oklch, var(--color-pine-canopy) 55%, var(--color-ink)); }
.tree-rank--pine .rank-item__bar { background: color-mix(in oklch, var(--color-pine-canopy) 82%, var(--color-ink)); }
.tree-rank--pine .rank-item__track { background: color-mix(in oklch, var(--color-pine-canopy) 18%, var(--color-paper)); }
.tree-rank__toggle { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: var(--space-3xs) var(--space-sm); align-items: center; width: 100%; padding: var(--space-sm) var(--space-md); border: 0; background: transparent; text-align: start; }
.tree-rank__title { font-family: var(--font-display); font-size: 1rem; font-weight: 700; }
.tree-rank__meta { grid-column: 1; color: var(--color-neutral); font-family: var(--font-mono); font-size: var(--text-xs); }
.tree-rank__chevron { grid-column: 2; grid-row: 1 / span 2; color: var(--color-accent-dark); font-size: var(--text-xs); font-weight: 600; text-decoration: underline; text-underline-offset: 0.22em; white-space: nowrap; }
/* 展开后在固定高度内滑动，避免长名单把后面的内容推得太远 */
.tree-rank__list { margin: 0; padding: 0 var(--space-md) var(--space-sm); max-height: 27rem; overflow-y: auto; overscroll-behavior: contain; list-style: none; counter-reset: rank; scrollbar-color: var(--color-rule) transparent; }
.tree-rank__list[hidden] { display: none; }
.tree-rank__list .rank-item { min-height: 2.6rem; }
.tree-rank__list .rank-item__row { padding-block: var(--space-3xs); }
.tree-rank__list .rank-item__name { font-size: 0.72rem; }
.tree-rank__list .rank-item__value { font-size: var(--text-xs); }

/* ---------- 年轮环形图：内圈年代 · 中圈地区 · 外圈性别构成 ---------- */
/* 年代/地区/性别筛选：压在双树背景下缘的一排低调文字 chips。
   默认退灰、无边框，只有选中的那一档用强调色，尽量不跟树抢视线。 */
.atlas-facets {
  /* 舞台可横向滚动，绝对定位会被滚动内容的宽度带偏，所以用静态块 + 负上边距，
     让它落进两棵树脚下那片空白里 */
  position: relative; z-index: 1; display: grid; gap: var(--space-3xs); justify-items: center;
  width: min(100%, 62rem); margin: -3.2rem auto var(--space-sm);
}
.facet-line { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: center; gap: var(--space-3xs) var(--space-2xs); }
.facet-line__label { color: var(--color-muted); font-family: var(--font-mono); font-size: var(--text-xs); letter-spacing: 0.08em; }
.facet-chip, .facet-clear {
  pointer-events: auto; min-height: 1.75rem; padding: 0 var(--space-2xs);
  border: 0; background: none; color: var(--color-neutral);
  font-family: var(--font-mono); font-size: var(--text-xs); line-height: 1.6;
  transition: color var(--dur-micro) var(--ease-out);
}
.facet-chip[aria-pressed="true"] {
  color: var(--color-accent-dark); font-weight: 600;
  text-decoration: underline; text-underline-offset: 0.28em; text-decoration-thickness: 2px;
}
.facet-clear { color: var(--color-muted); text-decoration: underline; text-underline-offset: 0.22em; }

.mode-row--compact { margin: var(--space-lg) 0 0; align-self: start; }

.path-list { display: grid; gap: 0; border-block-end: var(--rule-hair) solid var(--color-rule); }
.path-row { display: grid; gap: var(--space-md); padding-block: var(--space-lg); border-block-start: var(--rule-hair) solid var(--color-rule); }
.path-head b { display: block; font-family: var(--font-display); font-size: 1.12rem; }
.path-head span { color: var(--color-neutral); font-size: var(--text-sm); }
.path-track { display: flex; min-width: 0; flex-wrap: nowrap; gap: var(--space-xs); align-items: center; overflow-x: auto; padding-block-end: var(--space-sm); scroll-snap-type: x proximity; }
.path-node { display: flex; flex: 0 0 11rem; min-width: 0; flex-direction: column; align-self: start; scroll-snap-align: start; }
.path-stage__visual { position: relative; display: block; width: 100%; aspect-ratio: 1; min-height: 0; overflow: hidden; background: var(--color-paper-rose); color: var(--color-ink); border: var(--rule-hair) solid var(--color-rule-2); }
.path-stage__visual:hover .path-stage__image { transform: scale(1.025); }
.path-stage__visual:active .path-stage__image { transform: scale(0.99); }
.path-stage__visual:focus-visible { outline: 3px solid var(--color-accent-dark); outline-offset: 3px; }
.path-stage__image { display: block; width: 100%; height: 100%; object-fit: cover; transition: transform var(--dur-short) var(--ease-out); }
.path-stage__image--poster { object-fit: contain; background: var(--color-accent-ink); }
.path-stage__fallback { display: grid; width: 100%; height: 100%; place-items: center; padding: var(--space-md); color: var(--color-neutral); font-family: var(--font-display); text-align: center; }
.path-stage__kind { position: absolute; inset-block-start: var(--space-xs); inset-inline-start: var(--space-xs); padding: var(--space-3xs) var(--space-2xs); background: var(--color-paper); color: var(--color-accent-dark); border: var(--rule-hair) solid var(--color-rule); font-family: var(--font-mono); font-size: var(--text-xs); line-height: 1.2; }
.path-stage__action { position: absolute; inset-inline-end: var(--space-xs); inset-block-end: var(--space-xs); padding: var(--space-2xs) var(--space-xs); opacity: 0; transform: translateY(var(--space-2xs)); background: var(--color-ink); color: var(--color-accent-ink); font-size: var(--text-xs); line-height: 1; white-space: nowrap; transition: opacity var(--dur-micro) var(--ease-out), transform var(--dur-micro) var(--ease-out); }
.path-stage__visual:hover .path-stage__action, .path-stage__visual:focus-visible .path-stage__action { opacity: 1; transform: none; }
.path-stage__meta { display: grid; gap: var(--space-2xs); padding-block-start: var(--space-xs); }
.path-stage__title { font-size: 0.7rem; font-weight: 650; line-height: 1.45; overflow-wrap: anywhere; }
.path-stage__date { color: var(--color-muted); font-family: var(--font-mono); font-size: var(--text-xs); line-height: 1.35; }
.path-arrow { flex: 0 0 auto; color: var(--color-accent-dark); }
.path-score { font-family: var(--font-mono); color: var(--color-accent-dark); }
.return-study { max-width: 68rem; margin-block-start: var(--space-3xl); }
.return-study h3 { margin: 0; font-family: var(--font-display); font-size: var(--text-xl); }
/* 「不断回返的歌」：曲名做成漂浮的标签条，循环滚动，鼠标移上去整条停下并展开该曲的封面缩略图；
   点击在下方展开卡片（曲名 + 原唱者头像 + 记录条数 + 场合 + 全部封面），点封面就地内嵌播放。 */
.return-study h3 { min-width: 0; margin: 0 0 var(--space-lg); font-family: var(--font-display);
  font-size: clamp(1.44rem, 3.4vw, 3.2rem); font-weight: 650; letter-spacing: -0.045em; line-height: 1; overflow-wrap: anywhere; }
.return-list { margin-block-start: var(--space-xl); }
.return-marquee {
  overflow: hidden; padding-block: var(--space-2xs);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 3%, #000 97%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 3%, #000 97%, transparent);
}
/* align-items: center 不能省：flex 默认 stretch 会让所有标签跟着最高的那个一起长高，
   hover 展开一个，整条都会变高。 */
.return-marquee__track { display: flex; align-items: center; width: max-content; gap: var(--space-sm); animation: returnDrift 64s linear infinite; }
.return-marquee:hover .return-marquee__track, .return-marquee:focus-within .return-marquee__track { animation-play-state: paused; }
@keyframes returnDrift { from { transform: translateX(0); } to { transform: translateX(-50%); } }
.return-chip {
  /* 两行栅格：左列是跨两行的头像，右列第一行曲名、第二行缩略图（与曲名左对齐）。
     之前用 flex-wrap + flex-basis:100% 会把标签的固有宽度撑到最大，曲名后面留一大片空白。 */
  display: grid; grid-template-columns: auto minmax(0, 1fr); align-items: center;
  column-gap: var(--space-xs); row-gap: 0; width: max-content; max-width: 26rem; flex: none;
  padding: var(--space-2xs) var(--space-sm) var(--space-2xs) var(--space-2xs);
  border: var(--rule-hair) solid color-mix(in oklch, var(--color-rule) 60%, transparent);
  border-radius: var(--radius-lg, 1.25rem);
  /* 液态玻璃：与左上角系列切换胶囊同一材质——低透明底 + 提饱和 + 上沿受光 + 内圈厚度感。
     原唱者的取色只作为极淡的染色透出来，不再是一块实心色。 */
  background: color-mix(in oklch, var(--chip-tone, var(--color-paper-rose)) 22%, color-mix(in oklch, var(--color-paper) 55%, transparent));
  box-shadow: inset 0 1px 0 rgb(255 255 255 / 0.55), inset 0 0 0 1px rgb(255 255 255 / 0.16),
    0 0.5rem 1.5rem -0.5rem rgb(61 40 30 / 22%);
  backdrop-filter: blur(18px) saturate(180%);
  -webkit-backdrop-filter: blur(18px) saturate(180%);
  color: inherit; cursor: pointer; text-align: start;
  transition: background var(--dur-micro) var(--ease-out), border-color var(--dur-micro) var(--ease-out), transform var(--dur-micro) var(--ease-out);
}
.return-chip:active { transform: scale(0.98); }
.return-chip__face {
  grid-row: 1 / span 2; grid-column: 1; align-self: center;
  width: 1.9rem; height: 1.9rem; border-radius: 50%; object-fit: cover;
  border: var(--rule-hair) solid color-mix(in oklch, var(--color-rule) 70%, transparent);
  background: var(--color-paper);
  transition: width var(--dur-short) var(--ease-out), height var(--dur-short) var(--ease-out);
}
.return-chip__face--initials { display: grid; place-items: center; color: var(--color-neutral); font-family: var(--font-mono); font-size: var(--text-xs); }
.return-chip__line { grid-row: 1; grid-column: 2; display: flex; min-width: 0; align-items: baseline; gap: var(--space-xs); }
.return-chip__name { min-width: 0; font-family: var(--font-display); font-size: 0.9rem; font-weight: 650; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.return-chip__count { flex: none; color: var(--color-neutral); font-family: var(--font-mono); font-size: var(--text-xs); }
/* hover 展开的缩略图落在第二行，与曲名同一条左边线 */
.return-chip__thumbs {
  grid-row: 2; grid-column: 2; display: flex; gap: var(--space-3xs);
  max-height: 0; overflow: hidden;
  transition: max-height var(--dur-short) var(--ease-out), margin-block-start var(--dur-short) var(--ease-out);
}
.return-chip__thumbs img { width: 2.4rem; height: 2.4rem; object-fit: cover; border-radius: var(--space-3xs); border: var(--rule-hair) solid color-mix(in oklch, var(--color-rule) 60%, transparent); }
.return-chip:hover, .return-chip:focus-visible, .return-chip.is-open {
  background: color-mix(in oklch, var(--chip-tone-2, var(--color-paper-rose)) 40%, color-mix(in oklch, var(--color-paper) 62%, transparent));
  border-color: color-mix(in oklch, var(--chip-tone-2, var(--color-accent)) 45%, var(--color-rule) 55%);
}
/* hover 时头像放大到占满两行 */
.return-chip:hover .return-chip__face, .return-chip:focus-visible .return-chip__face { width: 3.4rem; height: 3.4rem; }
.return-chip:hover .return-chip__thumbs, .return-chip:focus-visible .return-chip__thumbs { max-height: 2.6rem; margin-block-start: var(--space-3xs); }
/* 卡片已经展开时，条里的缩略图就多余了 */
.return-list.is-card-open .return-chip__thumbs { display: none; }
.return-card-slot[hidden] { display: none; }
.return-card {
  margin-block-start: var(--space-lg); padding: var(--space-lg);
  border: var(--rule-hair) solid color-mix(in oklch, var(--chip-tone, var(--color-rule)) 60%, var(--color-ink) 40%);
  border-inline-start: var(--space-2xs) solid color-mix(in oklch, var(--chip-tone-2, var(--color-accent)) 55%, var(--color-ink) 45%);
  background: linear-gradient(135deg, var(--chip-tone, var(--color-paper-rose)), var(--chip-tone-2, var(--color-paper-2)));
  box-shadow: 5px 5px 0 color-mix(in oklch, var(--chip-tone-2, var(--color-rule)) 45%, var(--color-ink) 55%);
}
@media (prefers-reduced-motion: no-preference) {
  .return-card { animation: atlasDetailIn 180ms var(--ease-out) both; }
}
.return-card__head { display: grid; grid-template-columns: auto minmax(0, 1fr) auto; gap: var(--space-md); align-items: start; }
.return-card__face { width: 3.25rem; height: 3.25rem; border-radius: 50%; object-fit: cover; border: var(--rule-hair) solid var(--color-rule); background: var(--color-paper); }
.return-card__face--initials { display: grid; place-items: center; color: var(--color-neutral); font-family: var(--font-mono); }
.return-card__head h4 { margin: 0; font-family: var(--font-display); font-size: var(--text-lg); font-weight: 650; line-height: 1.2; overflow-wrap: anywhere; }
.return-card__head p { margin: var(--space-3xs) 0 0; color: var(--color-ink-2); font-size: var(--text-sm); }
.return-card__meta { color: var(--color-neutral) !important; font-family: var(--font-mono); font-size: var(--text-xs) !important; }
.return-card__close { border: 0; background: none; color: var(--color-neutral); line-height: 1; }
.return-card__close:hover { color: var(--color-accent-dark); }
.return-card__covers { display: grid; grid-template-columns: repeat(auto-fill, minmax(9rem, 1fr)); gap: var(--space-sm); margin: var(--space-lg) 0 0; padding: 0; list-style: none; }
.return-cover__frame { position: relative; margin: 0; }
.return-cover__btn { position: relative; display: block; width: 100%; aspect-ratio: 1; overflow: hidden; padding: 0;
  border: var(--rule-hair) solid var(--color-rule); background: var(--color-paper); cursor: pointer; }
.return-cover__btn--static { cursor: default; }
.return-cover__btn img { display: block; width: 100%; height: 100%; object-fit: cover; }
.return-cover__kind { position: absolute; inset-block-start: var(--space-3xs); inset-inline-start: var(--space-3xs);
  padding: var(--space-3xs) var(--space-2xs); background: var(--color-ink); color: var(--color-accent-ink);
  font-family: var(--font-mono); font-size: var(--text-xs); line-height: 1; }
.return-cover__play { position: absolute; inset-block-end: var(--space-2xs); inset-inline-end: var(--space-2xs);
  display: grid; place-items: center; width: 1.9rem; height: 1.9rem; border-radius: 50%;
  background: oklch(20% 0.02 40 / 0.55); color: oklch(99% 0 0); font-size: 0.7rem; }
/* 内嵌播放器就地盖住缩略图，方块尺寸不变，日期说明仍留在下方 */
.return-cover__mount { position: absolute; inset-block-start: 0; inset-inline: 0; aspect-ratio: 1; background: #000; z-index: 1; }
.return-cover__mount iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.return-cover__date { margin-block-start: var(--space-3xs); color: var(--color-neutral); font-family: var(--font-mono); font-size: var(--text-xs); }

.weight-key { margin: var(--space-lg) 0 0; }
.weight-key div { display: grid; grid-template-columns: 3rem 1fr; gap: var(--space-md); align-items: baseline; padding-block: var(--space-sm); border-block-start: var(--rule-hair) solid var(--color-rule); }
.weight-key dt { font-family: var(--font-display); font-size: 2rem; color: var(--color-accent-dark); }
.weight-key dd { margin: 0; }

.explorer { padding-block-end: var(--space-3xl); }
.thesis-link { display: inline-flex; min-height: 2.75rem; align-items: center; padding: 0; border: 0; background: none; color: var(--color-accent-dark); font: inherit; font-weight: 600; white-space: nowrap; cursor: pointer; text-decoration: underline; text-underline-offset: 0.22em; }
.filters { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: var(--space-sm) var(--space-md); align-items: end; margin-block-end: var(--space-md); }
.filters__search { grid-column: 1; }
.filters__toggle { border: var(--rule-hair) solid var(--color-rule); border-radius: 999px; background: var(--color-paper); color: var(--color-ink-2); padding: var(--space-xs) var(--space-md); white-space: nowrap; }
.filters__toggle[aria-expanded="true"] { background: var(--color-ink); color: var(--color-accent-ink); border-color: var(--color-ink); }
.filters__more { grid-column: 1 / -1; display: grid; gap: var(--space-md); }
.filters__more[hidden] { display: none; }
.filters label { display: grid; gap: var(--space-2xs); color: var(--color-neutral); font-size: var(--text-sm); }
.filters input, .filters select { width: 100%; border: var(--rule-hair) solid var(--color-rule); border-radius: 0; outline: 2px solid transparent; outline-offset: 1px; background: var(--color-paper); color: var(--color-ink); padding: 0 var(--space-sm); }
.filters input:focus-visible, .filters select:focus-visible { outline-color: var(--color-focus); }
.filters input:active, .filters select:active { background: var(--color-paper-2); }
.filters input:disabled, .filters select:disabled { background: var(--color-paper-2); }
.artist-shortcuts { display: flex; flex-wrap: wrap; gap: var(--space-xs); align-items: center; padding-block: var(--space-sm); border-block: var(--rule-hair) solid var(--color-rule); }
.artist-shortcuts__label { margin-inline-end: var(--space-xs); color: var(--color-neutral); font-family: var(--font-mono); font-size: var(--text-xs); }
.artist-shortcuts button, .view-switch button { min-height: 2.5rem; padding-inline: var(--space-sm); border: var(--rule-hair) solid var(--color-rule); border-radius: 999px; background: transparent; color: var(--color-ink); font-size: var(--text-xs); white-space: nowrap; }
.artist-shortcuts button[aria-pressed="true"], .view-switch button[aria-pressed="true"] { background: var(--color-ink); color: var(--color-accent-ink); border-color: var(--color-ink); }
.artist-shortcuts button:active, .view-switch button:active { transform: translateY(1px); }
.artist-shortcuts button:disabled, .view-switch button:disabled { opacity: 0.55; cursor: not-allowed; background: var(--color-paper-2); }
.record-toolbar { display: flex; flex-wrap: wrap; gap: var(--space-sm) var(--space-lg); align-items: center; justify-content: space-between; margin-block: var(--space-sm); }
.result-count { min-height: 1lh; margin: 0; font-family: var(--font-mono); font-size: var(--text-xs); color: var(--color-neutral); }
.view-switch { display: flex; gap: var(--space-xs); align-items: center; }
.record-list { border-block-end: var(--rule-hair) solid var(--color-rule); }
.record { display: grid; gap: var(--space-2xs); padding-block: var(--space-xs); border-block-start: var(--rule-hair) solid var(--color-rule); }
.record-list__note { grid-column: 1 / -1; margin: var(--space-sm) 0 0; padding-block-start: var(--space-xs); border-block-start: var(--rule-hair) solid var(--color-rule-2); color: var(--color-muted); font-size: var(--text-xs); }
.record__date { font-family: var(--font-mono); font-size: var(--text-xs); color: var(--color-neutral); }
.record__title { min-width: 0; font-size: 0.8rem; font-weight: 600; overflow-wrap: anywhere; }
.record__title small { display: block; color: var(--color-neutral); font-weight: 400; }
.record__title .record__variant { color: var(--color-accent-dark); font-size: var(--text-xs); }
.record__meta { display: flex; flex-wrap: wrap; gap: var(--space-xs); align-items: center; font-size: var(--text-xs); color: var(--color-neutral); }
.badge { display: inline-block; padding: 0 var(--space-xs); border: var(--rule-hair) solid var(--color-rule); border-radius: 999px; white-space: nowrap; }
.badge--excluded { border-style: dashed; }
.record a { display: inline-flex; min-height: 2.75rem; align-items: center; color: var(--color-accent-dark); white-space: nowrap; }
.record-list-stack__summary { background: var(--color-paper-2); }
.record-list-stack__toggle { min-height: 2.75rem; padding: 0; border: 0; background: transparent; color: var(--color-accent-dark); font-size: var(--text-xs); font-weight: 600; text-decoration: underline; text-underline-offset: 0.22em; white-space: nowrap; }
.record-list-stack__toggle:active { transform: translateY(1px); }
.record-list-stack__toggle:disabled { color: var(--color-muted); text-decoration: none; }
.record-list-stack__details { padding-inline-start: var(--space-md); border-inline-start: var(--rule-hair) solid var(--color-accent); }
.record-list-stack__details[hidden] { display: none; }
.record-list--cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 15rem), 1fr)); gap: var(--space-lg); border-block-end: 0; }
.record-stack { display: contents; }
.record-card { display: grid; min-width: 0; align-content: start; background: var(--color-card-neutral); border-block-start: var(--rule-hair) solid var(--color-rule); }
.record-card[data-card-tone="channel"] { background: var(--color-card-channel); }
.record-card[data-card-tone="jazz-piano"] { background: var(--color-card-jazz-piano); }
.record-card[data-card-tone="nan-nan-2020"] { background: var(--color-card-nan-nan-2020); }
.record-card[data-card-tone="nan-nan-2019"] { background: var(--color-card-nan-nan-2019); }
.record-card[data-card-tone="alone-home"] { background: var(--color-card-alone-home); }
.record-card[data-card-tone="rose"] { background: var(--color-card-rose); }
.record-card[data-card-tone="coral"] { background: var(--color-card-coral); }
.record-card[data-card-tone="amber"] { background: var(--color-card-amber); }
.record-card[data-card-tone="green"] { background: var(--color-card-green); }
.record-card[data-card-tone="teal"] { background: var(--color-card-teal); }
.record-card[data-card-tone="blue"] { background: var(--color-card-blue); }
.record-card[data-card-tone="violet"] { background: var(--color-card-violet); }
.record-card__visual { position: relative; display: block; width: 100%; aspect-ratio: 4 / 3; min-height: 0; overflow: hidden; background: var(--color-paper-rose); color: var(--color-ink); }
.record-card__visual:focus-visible { outline: 3px solid var(--color-focus); outline-offset: 3px; }
.record-card__image { display: block; width: 100%; height: 100%; object-fit: cover; }
.record-card__image--poster, .record-card__image--album { object-fit: contain; background: var(--color-accent-ink); }
.record-card__fallback { display: grid; width: 100%; height: 100%; place-content: center; gap: var(--space-xs); padding: var(--space-md); text-align: center; }
.record-card__fallback b { font-family: var(--font-display); font-size: var(--text-lg); }
.record-card__fallback small { color: var(--color-neutral); }
.record-card__action { position: absolute; inset-inline-end: var(--space-xs); inset-block-end: var(--space-xs); padding: var(--space-2xs) var(--space-xs); opacity: 0; transform: translateY(var(--space-2xs)); background: var(--color-ink); color: var(--color-accent-ink); font-size: var(--text-xs); line-height: 1; white-space: nowrap; transition: opacity var(--dur-micro) var(--ease-out), transform var(--dur-micro) var(--ease-out); }
.record-card__visual:hover .record-card__action, .record-card__visual:focus-visible .record-card__action { opacity: 1; transform: none; }
.record-card__visual:active .record-card__action { transform: translateY(1px); }
.record-card__copy { display: grid; gap: var(--space-xs); padding: var(--space-sm); }
.record-card__eyeline, .record-card__meta { display: flex; flex-wrap: wrap; gap: var(--space-xs); align-items: center; justify-content: space-between; color: var(--color-neutral); font-family: var(--font-mono); font-size: var(--text-xs); }
.record-card h3 { min-width: 0; margin: 0; font-family: var(--font-display); font-size: 0.95rem; line-height: 1.15; overflow-wrap: anywhere; }
.record-card p { margin: 0; }
.record-card__artist { font-size: var(--text-sm); }
.record-card__variant { margin: calc(var(--space-xs) * -0.25) 0 0; color: var(--color-accent-dark); font-size: var(--text-xs); line-height: 1.45; }
.record-card__context { color: var(--color-neutral); font-size: var(--text-xs); overflow-wrap: anywhere; }
.record-card--stack[data-stack-depth="2"] { box-shadow: var(--space-2xs) var(--space-2xs) 0 var(--stack-back-1); }
.record-card--stack[data-stack-depth="3"] { box-shadow: var(--space-2xs) var(--space-2xs) 0 var(--stack-back-1), var(--space-xs) var(--space-xs) 0 var(--stack-back-2); }
.record-card__merged { color: var(--color-accent-dark); font-family: var(--font-mono); font-size: var(--text-xs); }
.record-stack__toggle { justify-self: start; min-height: 2.75rem; margin-block-start: var(--space-xs); padding: 0; border: 0; background: transparent; color: var(--color-accent-dark); font-size: var(--text-xs); font-weight: 600; text-decoration: underline; text-underline-offset: 0.22em; white-space: nowrap; }
.record-stack__toggle:active { transform: translateY(1px); }
.record-stack__toggle:disabled { color: var(--color-muted); text-decoration: none; }
.record-stack__details { display: flex; grid-column: 1 / -1; flex-wrap: nowrap; gap: var(--space-lg); inline-size: 100%; padding: var(--space-sm) var(--space-xs) var(--space-md); overflow-x: auto; overscroll-behavior-inline: contain; scroll-snap-type: inline proximity; border-block: var(--rule-hair) solid var(--color-rule); }
.record-stack__details[hidden] { display: none; }
.record-card--compact { flex: 0 0 min(15rem, calc(100vw - 3rem)); scroll-snap-align: start; }
.record-card--compact .record-card__visual { aspect-ratio: 16 / 10; }
.load-more { display: block; margin: var(--space-xl) auto 0; }
.load-more[hidden] { display: none; }

/* ---------- 正式发行的翻唱：专辑分组 + 曲目网格 ---------- */
.released-groups { display: grid; gap: var(--space-2xl); }
.released-group__head { display: flex; align-items: center; gap: var(--space-md); margin-block-end: var(--space-lg); }
.released-group__cover { width: 5.5rem; height: 5.5rem; flex: none; object-fit: cover; border: var(--rule-hair) solid var(--color-rule); }
.released-group__head h3 { margin: 0; font-family: var(--font-display); font-size: clamp(1.1rem, 2.2vw, 1.6rem); font-weight: 650; letter-spacing: -0.02em; overflow-wrap: anywhere; }
.released-group__year { color: var(--color-accent-dark); font-family: var(--font-mono); font-size: var(--text-sm); font-weight: 400; }
.released-group__head p { margin: var(--space-2xs) 0 0; color: var(--color-neutral); font-family: var(--font-mono); font-size: var(--text-xs); }
/* 曲目表：一行一曲，左侧是该曲原唱者的圆形头像（每行都不同），
   专辑封面只在分组头出现一次。播放中的行用该原唱者的取色染底＋书脊点亮，
   与艺人详情卡同一套 ARTIST_TONES 资产。 */
.released-list { display: grid; gap: 0; margin: 0; padding: 0; list-style: none; }
.released-row { display: grid; grid-template-columns: minmax(0, 1fr) var(--rule-hair) auto 2.35rem; align-items: center;
  border-block-end: var(--rule-hair) solid var(--color-rule-2); }
.released-row:last-child { border-block-end: 0; }
.released-row__num { color: var(--color-neutral); font-family: var(--font-mono); font-size: var(--text-xs); font-variant-numeric: tabular-nums; }
.released-row__face { width: 2.25rem; height: 2.25rem; border-radius: 50%; object-fit: cover;
  border: var(--rule-hair) solid var(--color-rule); background: var(--color-paper-rose); }
.released-row__face--initials { display: grid; place-items: center; color: var(--color-neutral); font-family: var(--font-mono); font-size: var(--text-xs); }
.released-row__copy { display: grid; min-width: 0; }
.released-row__copy b { font-family: var(--font-display); font-size: 0.9rem; font-weight: 650; line-height: 1.25; overflow-wrap: anywhere; }
.released-row__copy small { color: var(--color-neutral); font-size: var(--text-xs); overflow-wrap: anywhere; }
.released-row__state { color: var(--color-neutral); font-size: 0.75rem; }
/* 左右分栏：左半边＝原唱、右半边＝藤井风翻唱版，各自独立播放，中间一条细分隔 */
.released-side {
  display: grid; align-items: center; gap: var(--space-sm);
  padding: var(--space-2xs) var(--space-xs);
  border: 0; border-inline-start: var(--space-3xs) solid transparent;
  background: none; cursor: pointer; text-align: start; font: inherit; color: inherit;
  transition: background var(--dur-micro) var(--ease-out), border-color var(--dur-micro) var(--ease-out);
}
.released-side--orig { grid-template-columns: 1.6rem 2.25rem minmax(0, 1fr) 1.25rem; min-width: 0; }
/* 右半边（翻唱）常态就有一层浅底，跟左半边（原唱）分区，不必等 hover 才看得出来。
   YouTube 链接指向的也是藤井风的正式版，所以这一格并进同一条浅底带；
   两格都 align-self: stretch 才能连成等高的一条，不会一高一矮。 */
.released-side--cover { grid-template-columns: 2.25rem 1.25rem; justify-content: start; }
.released-side--cover, .released-row__yt { align-self: stretch; background: color-mix(in oklch, var(--color-ink) 6%, transparent); }
.released-side--static { cursor: default; }
.released-side--static .released-row__state { visibility: hidden; }
.released-row__split { width: var(--rule-hair); align-self: stretch; margin-block: var(--space-2xs); background: var(--color-rule-2); }
.released-row__album { width: 2.25rem; height: 2.25rem; object-fit: cover; border: var(--rule-hair) solid var(--color-rule); }
.released-side.is-playing {
  background: color-mix(in oklch, var(--row-tone, var(--color-paper-rose)) 80%, transparent);
  border-inline-start-color: color-mix(in oklch, var(--row-tone-2, var(--color-accent)) 55%, var(--color-ink) 45%);
}
.released-side.is-playing .released-row__state { color: var(--color-ink); }
.released-side:focus-visible { outline: 3px solid var(--color-focus); outline-offset: -3px; }
/* YouTube 图标：静止时退成灰线稿，hover 变成品牌红并轻微放大，按下回弹 */
.released-row__yt { display: grid; place-items: center; width: 100%; color: var(--color-neutral); }

.yt-glyph { width: 1.35rem; height: 1.35rem; display: block; transition: transform var(--dur-micro) var(--ease-out); }
.yt-glyph__body { fill: currentColor; transition: fill var(--dur-micro) var(--ease-out); }
.yt-glyph__play { fill: var(--color-paper); }
.released-row__yt:active .yt-glyph { transform: scale(0.92); }

.foot-line { display: flex; flex-wrap: wrap; justify-content: space-between; gap: var(--space-sm) var(--space-lg); padding-block: var(--space-lg) var(--space-xl); border-block-start: var(--rule-hair) solid var(--color-rule); color: var(--color-neutral); font-size: var(--text-xs); }
.foot-line p { margin: 0; line-height: 1.7; }
.foot-line a { display: inline-flex; min-height: 2.75rem; align-items: center; white-space: nowrap; }
.foot-line__links { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-md); }
.foot-line__links button {
  border: 0; background: none; padding: 0; color: var(--color-accent-dark); font: inherit; font-size: inherit;
  cursor: pointer; display: inline-flex; min-height: 2.75rem; align-items: center; white-space: nowrap;
  text-decoration: underline; text-underline-offset: 3px;
}

/* ---------- 「为什么翻唱很重要」随笔弹层 ---------- */
.essay-dialog {
  width: min(34rem, calc(100% - 2 * var(--page-gutter)));
  max-height: min(80vh, 42rem);
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: var(--space-xl);
  border: var(--rule-hair) solid var(--color-rule);
  border-radius: var(--radius-md);
  background: var(--color-paper);
  color: var(--color-ink);
}
.essay-dialog::backdrop { background: oklch(20% 0.02 40 / 0.45); backdrop-filter: blur(2px); }
.essay-dialog--method { width: min(40rem, calc(100% - 2 * var(--page-gutter))); }
.essay-dialog--method .weight-key dt { font-size: 1.5rem; }
.essay-dialog__form { position: sticky; top: calc(-1 * var(--space-xl)); z-index: 1; display: flex; justify-content: flex-end; margin: calc(-1 * var(--space-md)) 0 var(--space-sm); }
.essay-dialog__close {
  min-width: 2.5rem; min-height: 2.5rem; border: var(--rule-hair) solid var(--color-rule); border-radius: 50%;
  background: var(--color-paper); color: var(--color-neutral); cursor: pointer; font-size: var(--text-sm);
}
.essay-dialog h2 { margin: 0 0 var(--space-md); font-family: var(--font-display); font-size: var(--text-xl); }
.essay-dialog__body p { margin: 0; font-size: var(--text-sm); line-height: 1.7; color: var(--color-ink-2); }
.essay-dialog__body p + p { margin-block-start: var(--space-md); }
.essay-dialog__body .dropcap { font-size: 3.4em; }
.tooltip { position: fixed; z-index: var(--z-tooltip); max-width: min(20rem, calc(100% - 2rem)); padding: var(--space-sm); pointer-events: none; background: var(--color-ink); color: var(--color-paper); border-radius: var(--radius-sm); font-size: var(--text-xs); line-height: 1.5; }
.tooltip b { display: block; font-size: var(--text-sm); }

@media (hover: hover) and (pointer: fine) {
  .language-switcher a:hover { background: var(--color-paper-2); color: var(--color-accent-dark); transform: translateY(-1px); }
  .mast-nav a:hover, .opening__thesis a:hover, .record a:hover { color: var(--color-accent-dark); }
  .mode-row button:hover, .quiet-button:hover, .load-more:hover, .artist-shortcuts button:hover, .view-switch button:hover { transform: translateY(-1px); background: var(--color-paper-2); }
  .record-stack__toggle:hover, .record-list-stack__toggle:hover { color: var(--color-ink); }
  .mode-row button[aria-pressed="true"]:hover { background: var(--color-accent-dark); }
  .artist-shortcuts button[aria-pressed="true"]:hover, .view-switch button[aria-pressed="true"]:hover { background: var(--color-ink); }
  .atlas-node:hover { transform: scale(1.14); }
  .facet-chip:hover, .facet-clear:hover { color: var(--color-ink); }
  .tree-rank__toggle:hover .tree-rank__chevron { color: var(--color-ink); }
  .atlas-tree.is-near { opacity: 1; }
  .filters input:hover, .filters select:hover { background: var(--color-paper-2); }
  .released-side:not(.released-side--static):hover { background: color-mix(in oklch, var(--row-tone, var(--color-paper-rose)) 45%, transparent); }
  .released-row__yt:hover .yt-glyph { transform: scale(1.12); }
  .released-row__yt:hover .yt-glyph__body { fill: oklch(56% 0.22 27); }
}
@media (min-width: 40rem) {
  .opening { grid-template-columns: minmax(0, 8fr) minmax(15rem, 4fr); align-items: end; padding-block: var(--space-2xl) var(--space-3xl); }
  .stat-strip { grid-template-columns: repeat(5, minmax(0, 1fr)); }
  .stat-strip div:nth-child(n+2) { border-inline-start: var(--rule-hair) solid var(--color-rule-2); }
  .record { grid-template-columns: 7rem minmax(0, 1fr) minmax(12rem, 0.75fr); align-items: start; }
  .record__meta { justify-content: flex-end; }
  .tree-ranks { grid-template-columns: repeat(2, minmax(0, 1fr)); align-items: start; }
  .filters__more { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .path-row { grid-template-columns: minmax(0, 1fr) auto; align-items: end; }
  .path-track { grid-column: 1 / -1; }
  .path-score { grid-column: 2; grid-row: 1; }
}
@media (min-width: 60rem) {
  /* 两张专辑并排，各占一列：整节从近 3 屏压到约 1 屏 */
  .released-groups { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-xl); }
}
@media (min-width: 70rem) {
  .filters__more { grid-template-columns: repeat(5, minmax(7rem, 1fr)); }
}
@media (max-width: 39.99rem) {
  .nav-mast { padding-block-start: calc(3.75rem + env(safe-area-inset-top)); }
  .mast-nav ul { gap-inline: var(--space-xs); }
  .opening h1 { font-size: clamp(2.88rem, 16vw, 4.16rem); }
  .atlas-scene { min-width: 52rem; }
  .atlas-detail { grid-template-columns: 1fr; }
  .atlas-detail dl { grid-template-columns: 1fr; }
  .rank-item { grid-template-columns: 2.2rem minmax(0, 1fr) auto; }
  .rank-item__content { grid-template-columns: minmax(0, 1fr) minmax(3rem, 0.8fr); }
  .rank-item__value { display: none; }
  /* ④ 「从试弹到定稿」：封面缩小成一行两张 + 箭头，减少纵向滚动 */
  .path-track { display: flex; flex-wrap: wrap; gap: var(--space-xs); align-items: flex-start; }
  .path-node { flex: 0 0 calc(50% - 1.3rem); width: auto; min-width: 0; }
  .path-arrow { align-self: center; transform: none; }

  /* ④ 「回到证据」：移动端只用卡片；卡片默认只露方图+标题，点开再看全文 */
  .view-switch { display: none; }
  .record-list--cards .record-card__visual { aspect-ratio: 1; }
  .record-list--cards .record-card:not(.is-open) .record-card__eyeline,
  .record-list--cards .record-card:not(.is-open) .record-card__artist,
  .record-list--cards .record-card:not(.is-open) .record-card__variant,
  .record-list--cards .record-card:not(.is-open) .record-card__context,
  .record-list--cards .record-card:not(.is-open) .record-card__merged,
  .record-list--cards .record-card:not(.is-open) .record-card__meta { display: none; }
  .record-list--cards .record-card__copy { padding: var(--space-xs) var(--space-sm); }

  /* 「正式发行的翻唱」：移动端头部收紧，曲目表本身单列不变 */
  .released-group__head { gap: var(--space-sm); }
}
@media (pointer: coarse) { button, a, input, select { min-height: 3rem; } }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  /* 漂浮标签条改为静止换行排布 */
  .return-marquee__track { width: auto; flex-wrap: wrap; animation: none; }
  *, *::before, *::after { animation-duration: 150ms !important; animation-iteration-count: 1 !important; transition-duration: 150ms !important; }
  .path-stage__visual:hover .path-stage__image, .path-stage__visual:active .path-stage__image, .record-card__action, .record-card__visual:active .record-card__action { transform: none; }
  .atlas-node__halo { animation: none; opacity: 0.24; }
  .atlas-tree, .atlas-node { transition: none; }
}

/* ---------- 排行与维度条：磨砂交互（与系列胶囊同一材质语言） ---------- */
.rank-item { grid-template-columns: 2.5rem minmax(0, 1fr); }
.rank-item__row {
  display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: var(--space-sm); align-items: center;
  width: 100%; padding: var(--space-2xs) var(--space-xs);
  border: var(--rule-hair) solid transparent; border-radius: 10px;
  background: transparent; color: inherit; cursor: pointer; text-align: start; font: inherit;
  transition: background-color var(--dur-micro) var(--ease-out), border-color var(--dur-micro) var(--ease-out), box-shadow var(--dur-micro) var(--ease-out);
}
@media (hover: hover) and (pointer: fine) {
  .rank-item__row:hover {
    background: rgb(255 255 255 / 0.42);
    border-color: rgb(255 255 255 / 0.55);
    box-shadow: inset 0 1px 0 rgb(255 255 255 / 0.55), 0 6px 16px -12px rgb(61 40 30 / 40%);
    backdrop-filter: blur(10px) saturate(160%);
    -webkit-backdrop-filter: blur(10px) saturate(160%);
  }
}
.rank-item.is-selected .rank-item__row {
  background: linear-gradient(150deg, rgb(255 255 255 / 0.6), color-mix(in oklch, var(--color-paper-rose) 65%, transparent));
  border-color: color-mix(in oklch, var(--color-accent) 45%, transparent);
  box-shadow: inset 0 1px 0 rgb(255 255 255 / 0.6), 0 8px 20px -14px rgb(61 40 30 / 45%);
  backdrop-filter: blur(10px) saturate(160%);
  -webkit-backdrop-filter: blur(10px) saturate(160%);
}
.rank-item__row:active { transform: scale(0.99); }
.rank-item__row:focus-visible { outline: 3px solid var(--color-focus); outline-offset: 2px; }

@media (max-width: 39.99rem) {
  .rank-item { grid-template-columns: 2.2rem minmax(0, 1fr); }
}