/* =========================================================
   英语听力 · English Listening
   一套轻量编辑式视觉：暖白纸面、墨色文字、单一陶红强调色。
   组件规则统一为：12px 基础栅格、1px 分隔线、8/12/20px 圆角。
   ========================================================= */

:root {
  /* 画布与表面 */
  --canvas: #f5f6f3;
  --bg: var(--canvas);
  --surface: #fffefb;
  --surface-2: #f0f2ee;
  --surface-sunken: #edf0ea;

  /* 文字 */
  --ink: #172023;
  --ink-2: #4d595f;
  --ink-3: #68747b;

  /* 线条 */
  --line: #e3e6df;
  --line-2: #ced4cc;

  /* 强调色与辅助色 */
  --accent: #a8462f;
  --accent-rgb: 168, 70, 47;
  --accent-deep: #86331f;
  --accent-soft: #f8eae4;
  --blue: #345a7d;
  --gold: #b7792c;

  /* 圆角 */
  --r-sm: 8px;
  --r: 12px;
  --r-lg: 20px;

  /* 阴影 */
  --sh-1: 0 1px 2px rgba(23, 32, 35, 0.04), 0 8px 24px -20px rgba(23, 32, 35, 0.28);
  --sh-2: 0 2px 6px rgba(23, 32, 35, 0.05), 0 24px 48px -32px rgba(23, 32, 35, 0.4);

  /* 字体 */
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, "Songti SC", "Source Han Serif SC", Georgia, serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", sans-serif;
  --mono: "SFMono-Regular", "Cascadia Mono", Consolas, "Liberation Mono", monospace;
  --font-display: var(--serif);
  --font-body: var(--sans);

  /* 版式 */
  --shell: 1180px;
  --gutter: clamp(16px, 4vw, 32px);
  --header-h: 64px;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--canvas);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  display: flex;
  flex-direction: column;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.24;
  letter-spacing: -0.012em;
  margin: 0 0 0.5em;
  color: var(--ink);
}

p { margin: 0 0 1em; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button { font: inherit; color: inherit; }
code {
  font-family: var(--mono);
  font-size: 0.88em;
  background: var(--surface-2);
  padding: 1px 5px;
  border-radius: 4px;
}
::selection { background: #f3d7cd; color: var(--ink); }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 4px;
}

.shell {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.hidden,
[hidden] { display: none !important; }

body > main { flex: 1 0 auto; }

/* 后台页面在校验通过前先遮住内容，避免闪出空表单 */
html.gated main,
html.gated .admin-nav { visibility: hidden; }

/* ---------------- 顶栏 ---------------- */

.topbar {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(245, 246, 243, 0.88);
  backdrop-filter: saturate(1.3) blur(12px);
  -webkit-backdrop-filter: saturate(1.3) blur(12px);
  border-bottom: 1px solid var(--line);
}

.topbar-in {
  height: var(--header-h);
  display: flex;
  align-items: center;
  gap: 20px;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 600;
  letter-spacing: 0.04em;
  flex-shrink: 0;
  min-height: 44px;
  padding: 0 2px;
}
.logo svg { width: 22px; height: 22px; color: var(--accent); }

.topnav {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 6px;
}
.topnav a {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: 6px 14px;
  font-size: 13.5px;
  color: var(--ink-2);
  border: 1px solid transparent;
  border-radius: 999px;
  transition: background 0.18s, color 0.18s, border-color 0.18s;
}
.topnav a:hover { background: var(--surface); border-color: var(--line); color: var(--ink); }
.topnav a.is-active { background: var(--ink); color: #fff; }

.btn-quit {
  margin-left: 6px;
  padding: 6px 13px;
  font-size: 12.5px;
  color: var(--ink-2);
  background: transparent;
  border: 1px solid var(--line-2);
  border-radius: 999px;
  cursor: pointer;
  transition: color 0.18s, border-color 0.18s, background 0.18s;
}
.btn-quit:hover { color: var(--accent); border-color: var(--accent); background: var(--surface); }

/* ---------------- 页脚 ---------------- */

.footer {
  margin-top: auto;
  min-height: 64px;
  border-top: 1px solid var(--line);
  padding: 16px 0 18px;
  background: var(--canvas);
}
.footer-in {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 22px;
}

.beian {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 2px 5px;
  font-size: 11.5px;
  line-height: 1.8;
  color: var(--ink-3);
}
.beian img {
  height: 15px;
  width: auto;
  display: inline-block;
  vertical-align: middle;
  opacity: 0.85;
}
.beian a {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  color: var(--ink-2);
  transition: color 0.18s;
}
.beian a:hover { color: var(--accent); }
.beian .sep { color: var(--line-2); margin: 0 2px; }
.beian .copyright { color: var(--ink-3); }

.door {
  position: absolute;
  right: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  min-height: 40px;
  padding: 0 6px;
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: 0.18em;
  color: var(--ink-3);
  opacity: 0.32;
  transition: opacity 0.22s, color 0.22s;
}
.door:hover { opacity: 1; color: var(--accent); }

/* ---------------- 按钮 ---------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  min-height: 40px;
  padding: 9px 18px;
  font-size: 13.5px;
  font-weight: 500;
  line-height: 1.2;
  border: 1px solid transparent;
  border-radius: var(--r-sm);
  background: var(--ink);
  color: #fff;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.18s, border-color 0.18s, color 0.18s, box-shadow 0.18s;
}
.btn:hover { background: #2b3439; box-shadow: var(--sh-1); }
.btn:active { background: #232b2f; }
.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  box-shadow: none;
}

.btn-accent { background: var(--accent); }
.btn-accent:hover { background: var(--accent-deep); }
.btn-accent:active { background: #732a19; }

/* 强调色按钮禁用时要真正「看起来不能点」 */
.btn-accent:disabled,
.btn-accent:disabled:hover {
  background: #c9cbc6;
  color: #fff;
  opacity: 1;
  box-shadow: none;
}

.btn-line {
  background: var(--surface);
  color: var(--ink);
  border-color: var(--line-2);
}
.btn-line:hover {
  background: var(--surface);
  border-color: var(--ink-3);
  box-shadow: var(--sh-1);
}

.btn-ghost {
  background: transparent;
  color: var(--ink-2);
  border-color: transparent;
}
.btn-ghost:hover { background: var(--surface-2); color: var(--ink); box-shadow: none; }

.btn-sm { min-height: 34px; padding: 6px 12px; font-size: 12.5px; gap: 5px; }
.btn-block { width: 100%; }
.btn-icon { width: 38px; min-height: 38px; padding: 0; }
.btn-danger {
  background: transparent;
  color: var(--accent-deep);
  border-color: rgba(var(--accent-rgb), 0.32);
}
.btn-danger:hover { background: var(--accent); color: #fff; border-color: var(--accent); }

/* ---------------- 表单 ---------------- */

.input,
.select {
  width: 100%;
  min-height: 42px;
  padding: 9px 13px;
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--line-2);
  border-radius: var(--r-sm);
  transition: border-color 0.18s, box-shadow 0.18s;
}
.input::placeholder { color: var(--ink-3); }
.input:focus,
.select:focus {
  outline: none;
  border-color: var(--ink-3);
  box-shadow: 0 0 0 3px rgba(23, 32, 35, 0.08);
}

.field { display: flex; flex-direction: column; gap: 6px; min-width: 0; }
.field > label {
  font-family: var(--font-body);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: 0.01em;
  color: var(--ink-2);
}
.field .note { font-size: 12px; color: var(--ink-3); }

.form-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(168px, 1fr));
  gap: 16px;
}

.form-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

.cover-field { margin-top: 18px; }

.inline-form {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.inline-form .input { flex: 1 1 240px; width: auto; min-width: 0; }

.field-note {
  margin: 9px 0 0;
  font-size: 12px;
  color: var(--ink-3);
}

/* ---------------- 标签 ---------------- */

.tag {
  display: inline-flex;
  align-items: center;
  min-height: 22px;
  padding: 1px 8px;
  font-size: 11px;
  color: var(--ink-2);
  background: var(--surface-2);
  border-radius: 4px;
  white-space: nowrap;
}
.tag-accent { background: var(--accent-soft); color: var(--accent-deep); }
.tag-blue { background: #e8eef4; color: var(--blue); }

/* ---------------- 首页 ---------------- */

.hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(280px, 0.92fr);
  align-items: center;
  gap: clamp(24px, 5vw, 56px);
  padding: clamp(36px, 6vw, 68px) 0 clamp(28px, 4vw, 44px);
  /* 装饰光晕有意超出内容框，必须裁掉，否则桌面端会出现横向滚动 */
  overflow: hidden;
  overflow: clip;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 6% -20% auto 40%;
  height: 380px;
  background: radial-gradient(closest-side, rgba(var(--accent-rgb), 0.07), transparent 72%);
  pointer-events: none;
  z-index: 0;
}
.hero > * { position: relative; z-index: 1; }

.hero-copy,
.book-head-main,
.lyrics-panel,
.setting-volume { min-width: 0; }

.hero-kicker {
  margin: 0 0 14px;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-3);
}

.hero h1 {
  margin: 0 0 18px;
  font-size: clamp(32px, 4.6vw, 52px);
  line-height: 1.16;
  letter-spacing: -0.025em;
}

.hero-lede {
  max-width: 44ch;
  margin: 0 0 24px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-2);
}

.hero-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 40px;
  font-size: 13.5px;
  font-weight: 500;
  color: var(--accent-deep);
  border-bottom: 1px solid rgba(134, 51, 31, 0.3);
  transition: gap 0.2s var(--ease), border-color 0.2s;
}
.hero-link:hover { gap: 12px; border-color: var(--accent); }

.hero-art {
  width: 100%;
  max-width: 420px;
  margin: 0 auto;
  justify-self: center;
}
.hero-art svg { width: 100%; height: auto; display: block; }

.toolbar {
  display: grid;
  grid-template-columns: minmax(200px, 280px) minmax(0, 1fr);
  gap: 18px 28px;
  align-items: start;
  padding: 16px 18px;
  margin-top: 6px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  box-shadow: var(--sh-1);
}

.search-field { display: grid; gap: 6px; min-width: 0; }
.search-label {
  font-family: var(--font-body);
  font-size: 11.5px;
  font-weight: 500;
  color: var(--ink-2);
}
.toolbar .search { min-height: 40px; }

.filters {
  display: grid;
  gap: 8px;
  min-width: 0;
}
.filter-set {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 4px 6px;
  min-width: 0;
}
.filter-label {
  flex: 0 0 34px;
  font-size: 11.5px;
  color: var(--ink-3);
}
.pill {
  min-height: 30px;
  padding: 4px 11px;
  font-size: 12.5px;
  color: var(--ink-2);
  background: transparent;
  border: 1px solid var(--line-2);
  border-radius: 999px;
  cursor: pointer;
  transition: background 0.16s, border-color 0.16s, color 0.16s;
}
.pill:hover { border-color: var(--ink-3); color: var(--ink); }
.pill.is-on { background: var(--ink); border-color: var(--ink); color: #fff; }

.library { padding-top: 30px; }

.shelf-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  padding-bottom: 14px;
  margin-bottom: 22px;
  border-bottom: 1px solid var(--line);
}
.shelf-kicker {
  margin: 0 0 2px;
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.shelf-head h2 { margin: 0; font-size: 24px; }
.shelf-head .count {
  padding-bottom: 3px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--ink-3);
  white-space: nowrap;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(198px, 1fr));
  gap: 30px 22px;
  padding-bottom: 64px;
}

.book {
  display: block;
  min-width: 0;
  animation: rise 0.45s var(--ease) both;
}
.book .frame {
  position: relative;
  aspect-ratio: 3 / 4;
  border: 1px solid var(--line);
  border-radius: var(--r);
  overflow: hidden;
  background: var(--surface-2);
  box-shadow: var(--sh-1);
  transition: box-shadow 0.28s var(--ease), border-color 0.28s;
}
.book .frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s var(--ease);
}
.book .frame .placeholder {
  width: 100%;
  height: 100%;
  display: grid;
  place-items: center;
  font-family: var(--font-display);
  font-size: 40px;
  color: var(--ink-3);
  background: repeating-linear-gradient(135deg, var(--surface-2) 0 12px, #e8ebe5 12px 24px);
}
.book:hover .frame {
  box-shadow: var(--sh-2);
  border-color: var(--line-2);
}
.book:hover .frame img { transform: scale(1.03); }
.book .frame .badge {
  position: absolute;
  right: 8px;
  bottom: 8px;
  padding: 2px 7px;
  font-family: var(--mono);
  font-size: 9.5px;
  color: #fff;
  background: rgba(23, 32, 35, 0.8);
  border-radius: 4px;
  backdrop-filter: blur(4px);
}
.book .title {
  margin: 12px 0 6px;
  font-family: var(--font-display);
  font-size: 16.5px;
  font-weight: 600;
  line-height: 1.4;
  transition: color 0.18s;
}
.book:hover .title { color: var(--accent-deep); }
.book .tags { display: flex; flex-wrap: wrap; gap: 4px; }

/* ---------------- 通用路径 ---------------- */

.crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  padding: 20px 0 0;
  font-size: 12.5px;
  color: var(--ink-3);
}
.crumb a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  min-height: 32px;
  padding: 0 6px;
  margin: 0 -6px;
  transition: color 0.18s;
}
.crumb a:hover { color: var(--accent); }
.crumb .slash { color: var(--line-2); }
.crumb > span:last-child { color: var(--ink-2); }

/* ---------------- 课本页 ---------------- */

.book-head {
  display: grid;
  grid-template-columns: 176px minmax(0, 1fr);
  gap: clamp(20px, 4vw, 40px);
  align-items: start;
  margin: 18px 0 30px;
  padding: clamp(20px, 3vw, 30px);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  box-shadow: var(--sh-1);
}
.book-head .cover {
  border-radius: var(--r);
  overflow: hidden;
  background: var(--surface-2);
  box-shadow: var(--sh-2);
}
.book-head .cover img { width: 100%; aspect-ratio: 3/4; object-fit: cover; }
.book-head .cover .placeholder {
  aspect-ratio: 3/4;
  display: grid;
  place-items: center;
  font-family: var(--font-display);
  font-size: 46px;
  color: var(--ink-3);
  background: repeating-linear-gradient(135deg, var(--surface-2) 0 12px, #e8ebe5 12px 24px);
}
.book-kicker {
  margin: 0 0 6px;
  font-size: 11.5px;
  font-weight: 500;
  color: var(--ink-3);
}
.book-head h1 {
  font-size: clamp(24px, 3.4vw, 34px);
  margin: 0 0 12px;
}
.book-head .tags { display: flex; flex-wrap: wrap; gap: 5px; margin-bottom: 18px; }
.book-head .stats {
  display: flex;
  gap: 30px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-size: 12px;
  color: var(--ink-3);
}
.book-head .stats b {
  display: block;
  margin-bottom: 1px;
  font-family: var(--font-display);
  font-size: 23px;
  font-weight: 600;
  line-height: 1.2;
  color: var(--ink);
}
.book-head .actions { margin-top: 18px; }

.unit {
  margin-bottom: 22px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r);
  overflow: hidden;
}
.unit-bar {
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 12px 18px;
  background: var(--surface-2);
  border-bottom: 1px solid var(--line);
}
.unit-bar .label {
  flex-shrink: 0;
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: 0.14em;
  color: var(--accent-deep);
}
.unit-bar .name {
  min-width: 0;
  font-family: var(--font-display);
  font-size: 16.5px;
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.unit-bar .num {
  margin-left: auto;
  flex-shrink: 0;
  padding: 1px 8px;
  font-family: var(--mono);
  font-size: 10px;
  color: var(--ink-3);
  background: var(--surface);
  border-radius: 999px;
}

.tracks { background: var(--surface); }
.track {
  display: flex;
  align-items: center;
  gap: 14px;
  min-height: 64px;
  padding: 11px 18px;
  border-top: 1px solid var(--line);
  position: relative;
  transition: background 0.18s;
}
.track:first-child { border-top: 0; }
.track:hover { background: #fdfdf9; }
.track::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--accent);
  transform: scaleY(0);
  transition: transform 0.2s var(--ease);
}
.track:hover::before { transform: scaleY(1); }

.track .no {
  width: 24px;
  flex-shrink: 0;
  font-family: var(--mono);
  font-size: 10.5px;
  color: var(--ink-3);
  transition: color 0.18s;
}
.track:hover .no { color: var(--accent); }
.track .thumb {
  width: 42px;
  height: 42px;
  flex-shrink: 0;
  border-radius: 6px;
  overflow: hidden;
  background: var(--surface-2);
  position: relative;
}
.track .thumb img { width: 100%; height: 100%; object-fit: cover; }
.track .thumb .none {
  width: 100%;
  height: 100%;
  display: grid;
  place-items: center;
  color: var(--line-2);
}
.track .thumb .pic-count {
  position: absolute;
  right: 2px;
  bottom: 2px;
  min-width: 15px;
  padding: 0 3px;
  border-radius: 3px;
  background: rgba(23, 32, 35, 0.78);
  color: #fff;
  font-family: var(--mono);
  font-size: 9px;
  line-height: 14px;
  text-align: center;
}
.track .body { min-width: 0; flex: 1; }
.track .name {
  display: block;
  font-size: 14.5px;
  font-weight: 500;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.track .sub {
  display: block;
  margin-top: 2px;
  font-family: var(--mono);
  font-size: 10.5px;
  color: var(--ink-3);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.track .go {
  width: 34px;
  height: 34px;
  flex-shrink: 0;
  display: grid;
  place-items: center;
  border-radius: 50%;
  color: var(--ink-3);
  border: 1px solid var(--line-2);
  transition: background 0.2s, border-color 0.2s, color 0.2s;
}
.track:hover .go {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

/* ---------------- 播放页 ---------------- */

.player-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 330px;
  gap: 22px;
  padding: 14px 0 64px;
  align-items: start;
}

.player-main {
  display: grid;
  gap: 18px;
  min-width: 0;
}

.stage {
  min-width: 0;
  padding: clamp(20px, 2.8vw, 28px);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  box-shadow: var(--sh-1);
}

.stage-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 200px;
  align-items: end;
  gap: 20px;
}
.stage-title { min-width: 0; }

.stage-kicker {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  margin: 0 0 8px;
  font-size: 11.5px;
  font-weight: 500;
  color: var(--ink-3);
}
.live-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  opacity: 0.75;
}
.is-playing .live-dot { animation: live 1.6s ease-in-out infinite; }

.stage h1 {
  margin: 0 0 10px;
  font-size: clamp(21px, 2.7vw, 28px);
  line-height: 1.3;
  overflow-wrap: anywhere;
}
.stage .tags { display: flex; flex-wrap: wrap; gap: 5px; }

.notice {
  display: flex;
  gap: 8px;
  padding: 10px 13px;
  margin: 16px 0 0;
  background: #fcf6e7;
  border: 1px solid #ecdcb6;
  border-radius: var(--r-sm);
  font-size: 12.5px;
  line-height: 1.65;
  color: #74551a;
}

.wave {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2px;
  height: 46px;
  contain: layout paint;
}
.wave span {
  display: block;
  flex: 1 1 0;
  max-width: 3.5px;
  height: 6px;
  border-radius: 2px;
  background: var(--line-2);
  transform-origin: center;
  transition: background 0.3s;
}
.is-playing .wave span {
  background: var(--accent);
  animation: pulse-bar 1.05s ease-in-out infinite;
}

.transport {
  margin-top: 18px;
  padding: 16px 16px 14px;
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: var(--r);
}

.seek {
  position: relative;
  height: 30px;
  display: flex;
  align-items: center;
  cursor: pointer;
  touch-action: none;
  --seek-progress: 0;
}
.seek-rail {
  position: relative;
  width: 100%;
  height: 6px;
  background: #dfe3dc;
  border-radius: 999px;
  overflow: hidden;
}
.seek-fill {
  position: absolute;
  inset: 0;
  width: 100%;
  background: var(--accent);
  border-radius: inherit;
  transform: scaleX(0);
  transform-origin: left center;
  will-change: transform;
}
.seek-dot {
  position: absolute;
  top: 50%;
  left: 0;
  width: 14px;
  height: 14px;
  margin-left: -7px;
  background: var(--surface);
  border: 2px solid var(--accent);
  border-radius: 50%;
  box-shadow: 0 1px 4px rgba(23, 32, 35, 0.22);
  transform: translate3d(0, -50%, 0);
  will-change: transform;
  pointer-events: none;
}
.seek:hover .seek-dot,
.seek:focus-visible .seek-dot,
.seek.is-dragging .seek-dot { box-shadow: 0 0 0 4px rgba(var(--accent-rgb), 0.14); }
.seek:focus-visible { outline-offset: 4px; }

.timing {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 2px;
  font-family: var(--mono);
  font-size: 11.5px;
  font-variant-numeric: tabular-nums;
  color: var(--ink-3);
}
.timing .now { color: var(--accent-deep); }

.transport-row {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: clamp(10px, 3vw, 26px);
  margin-top: 8px;
  padding-top: 12px;
  border-top: 1px solid rgba(206, 212, 204, 0.7);
}
.transport-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  min-width: 46px;
}
.transport-item:has(.skip:disabled) { opacity: 0.42; }

.control-label {
  font-size: 11px;
  line-height: 1;
  color: var(--ink-3);
  white-space: nowrap;
}

.orb {
  width: 60px;
  height: 60px;
  flex-shrink: 0;
  display: grid;
  place-items: center;
  border: 0;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  cursor: pointer;
  box-shadow: 0 10px 22px -12px rgba(var(--accent-rgb), 0.9);
  transition: background 0.18s, box-shadow 0.18s;
}
.orb:hover { background: var(--accent-deep); box-shadow: 0 12px 24px -12px rgba(134, 51, 31, 0.9); }
.orb:active { background: #732a19; }
.transport-item.is-primary .control-label { color: var(--ink-2); font-weight: 500; }

.skip {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  background: var(--surface);
  border: 1px solid var(--line-2);
  border-radius: 50%;
  color: var(--ink-2);
  cursor: pointer;
  transition: background 0.16s, border-color 0.16s, color 0.16s;
}
.skip:hover { border-color: var(--ink-3); color: var(--ink); background: var(--surface); }
.skip:disabled { cursor: not-allowed; }

.settings-strip {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr) auto;
  gap: 16px 22px;
  align-items: start;
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}
.setting {
  display: grid;
  gap: 8px;
  min-width: 0;
}
.setting-label {
  font-size: 11.5px;
  font-weight: 500;
  color: var(--ink-3);
}

.rates {
  display: flex;
  gap: 4px;
  min-width: 0;
}
.rate {
  min-width: 40px;
  min-height: 32px;
  padding: 4px 8px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-2);
  background: var(--surface);
  border: 1px solid var(--line-2);
  border-radius: 6px;
  cursor: pointer;
  transition: background 0.16s, border-color 0.16s, color 0.16s;
}
.rate:hover { border-color: var(--ink-3); color: var(--ink); }
.rate.is-on { background: var(--ink); border-color: var(--ink); color: #fff; }

.volume {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
}
.skip.mute {
  width: 38px;
  height: 38px;
  flex-shrink: 0;
  border: 0;
  background: transparent;
  color: var(--ink-3);
}
.skip.mute:hover { color: var(--ink); background: var(--surface-sunken); }
.skip.mute.is-off { color: var(--accent); }

.volume input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  flex: 1 1 auto;
  width: 100%;
  min-width: 72px;
  max-width: 150px;
  height: 4px;
  background: #dfe3dc;
  border-radius: 999px;
  cursor: pointer;
}
.volume input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--ink);
  cursor: pointer;
  box-shadow: 0 1px 3px rgba(23, 32, 35, 0.26);
}
.volume input[type="range"]::-moz-range-thumb {
  width: 14px;
  height: 14px;
  border: 0;
  border-radius: 50%;
  background: var(--ink);
}
.volume .pct {
  width: 28px;
  flex-shrink: 0;
  font-family: var(--mono);
  font-size: 10.5px;
  font-variant-numeric: tabular-nums;
  color: var(--ink-3);
  text-align: right;
}

.file-actions { display: flex; gap: 6px; }

.hint {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 16px;
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-size: 11.5px;
  color: var(--ink-3);
}
.hint b {
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 500;
  color: var(--ink-2);
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 1px 5px;
  margin-right: 4px;
}

/* ---------------- 面板 / 歌词 ---------------- */

.panel {
  min-width: 0;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  overflow: hidden;
}
.panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  min-height: 44px;
  padding: 10px 18px;
  border-bottom: 1px solid var(--line);
}
.panel-title {
  margin: 0;
  font-family: var(--font-body);
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.01em;
}
.panel-meta {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--ink-3);
  white-space: nowrap;
}
.panel-body { padding: 14px; }
.panel-body.flush { padding: 0; }

.lyrics-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 52px;
  padding: 10px 18px;
  border-bottom: 1px solid var(--line);
}
.lyrics-title { display: flex; align-items: baseline; gap: 8px; }
.lyrics-head .cap {
  font-family: var(--font-body);
  font-size: 12.5px;
  font-weight: 600;
  color: var(--ink);
}
.lyrics-sub {
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.lyrics-tools { display: flex; gap: 4px; }

.lyrics {
  position: relative;
  height: 280px;
  overflow: hidden;
  -webkit-mask-image: linear-gradient(180deg, transparent, #000 13%, #000 87%, transparent);
  mask-image: linear-gradient(180deg, transparent, #000 13%, #000 87%, transparent);
}
.lyrics-inner {
  padding: 116px 18px;
  transition: transform 0.42s cubic-bezier(0.22, 1, 0.36, 1);
  will-change: transform;
}
.lyric-line {
  padding: 9px 14px;
  margin: 2px 0;
  border-radius: 10px;
  text-align: center;
  font-size: 15px;
  line-height: 1.55;
  color: var(--ink-3);
  cursor: pointer;
  overflow-wrap: anywhere;
  transition: color 0.18s, background 0.18s;
}
.lyric-line:hover { background: var(--surface-2); color: var(--ink-2); }
.lyric-line.is-on {
  background: var(--accent-soft);
  color: var(--accent-deep);
  cursor: default;
}
.lyrics-empty {
  height: 280px;
  display: grid;
  place-content: center;
  gap: 5px;
  padding: 20px;
  text-align: center;
  font-size: 14px;
  color: var(--ink-3);
}
.lyrics-empty .sm { font-size: 12.5px; color: var(--ink-3); opacity: 0.85; }
/* 没有歌词时不必占满整块高度，空白过大会让人以为内容没加载出来 */
.lyrics:has(.lyrics-empty) { height: 214px; }
.lyrics:has(.lyrics-empty) .lyrics-empty { height: 214px; }

.side {
  display: flex;
  flex-direction: column;
  gap: 18px;
  min-width: 0;
}
.side .panel:first-child { flex: 1 1 auto; }

.textbook-view {
  background: var(--surface-2);
  border-radius: var(--r-sm);
  overflow: hidden;
  min-height: 180px;
  display: grid;
  place-items: center;
}
.textbook-view img {
  width: 100%;
  max-height: 430px;
  object-fit: contain;
  cursor: zoom-in;
}

.reader { display: flex; flex-direction: column; gap: 8px; width: 100%; }
.reader .main {
  width: 100%;
  max-height: 380px;
  object-fit: contain;
  border-radius: 6px;
  background: var(--surface-2);
  cursor: zoom-in;
}
.reader .strip {
  display: flex;
  gap: 5px;
  overflow-x: auto;
  padding-bottom: 2px;
  scrollbar-width: thin;
}
.reader .strip button {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 2px solid transparent;
  border-radius: 6px;
  overflow: hidden;
  background: var(--surface-2);
  cursor: pointer;
  opacity: 0.6;
  transition: opacity 0.16s, border-color 0.16s;
}
.reader .strip button:hover { opacity: 1; }
.reader .strip button.is-on { border-color: var(--accent); opacity: 1; }
.reader .strip img { width: 100%; height: 100%; object-fit: cover; }
.textbook-view .none {
  padding: 42px 18px;
  text-align: center;
  font-size: 12.5px;
  color: var(--ink-3);
  line-height: 1.7;
}

.playlist a {
  display: flex;
  gap: 10px;
  align-items: center;
  min-height: 46px;
  padding: 10px 16px;
  border-bottom: 1px solid var(--line);
  font-size: 13.5px;
  color: var(--ink-2);
  transition: background 0.16s, color 0.16s;
}
.playlist a:last-child { border-bottom: 0; }
.playlist a:hover { background: var(--surface-2); color: var(--ink); }
.playlist a.is-cur {
  background: var(--accent-soft);
  color: var(--accent-deep);
  font-weight: 500;
}
.playlist .idx {
  width: 18px;
  flex-shrink: 0;
  font-family: var(--mono);
  font-size: 10.5px;
  color: var(--ink-3);
}
.playlist a.is-cur .idx { color: var(--accent); }
.playlist .txt {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ---------------- 后台 ---------------- */

.admin-top {
  display: flex;
  align-items: flex-end;
  gap: 16px;
  flex-wrap: wrap;
  padding: 30px 0 20px;
}
.admin-top h1 { margin: 0; font-size: clamp(24px, 3.2vw, 30px); }
.admin-top .lede {
  max-width: 64ch;
  margin: 6px 0 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--ink-3);
}
.admin-top .top-actions { margin-left: auto; }

.card {
  margin-bottom: 20px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r);
  overflow: hidden;
  box-shadow: var(--sh-1);
}
.card-head {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 48px;
  padding: 10px 18px;
  background: var(--surface-2);
  border-bottom: 1px solid var(--line);
}
.card-head h2 {
  margin: 0;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
}
.card-head .aside {
  margin-left: auto;
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: 0.12em;
  color: var(--ink-3);
}
.card-body { padding: 18px; }

.drop {
  position: relative;
  display: grid;
  place-items: center;
  gap: 4px;
  min-height: 116px;
  padding: 16px;
  text-align: center;
  border: 1.5px dashed var(--line-2);
  border-radius: var(--r);
  background: var(--surface-2);
  cursor: pointer;
  transition: border-color 0.18s, background 0.18s;
}
.drop:hover,
.drop.is-over { border-color: var(--accent); background: var(--accent-soft); }
.drop strong { font-size: 13px; font-weight: 600; }
.drop span { font-size: 12px; color: var(--ink-3); }
.drop input[type="file"] {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}

.picked {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 10px;
  padding: 8px 11px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  font-size: 12.5px;
}
.picked img { width: 38px; height: 38px; object-fit: cover; border-radius: 5px; }
.picked .name {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.picked .size {
  flex-shrink: 0;
  font-family: var(--mono);
  font-size: 10.5px;
  color: var(--ink-3);
}
.picked-audio-icon {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  color: var(--accent);
  flex-shrink: 0;
}

/* 待上传图片预览 */
.picked-thumbs { flex-wrap: wrap; gap: 6px; }
.picked-thumb {
  position: relative;
  width: 38px;
  height: 38px;
  flex-shrink: 0;
  border-radius: 5px;
  overflow: hidden;
  border: 1px solid var(--line);
}
.picked-thumb img { width: 100%; height: 100%; object-fit: cover; }
.picked-thumb button {
  position: absolute;
  top: 0;
  right: 0;
  width: 16px;
  height: 16px;
  padding: 0;
  font-size: 11px;
  line-height: 1;
  color: #fff;
  background: rgba(23, 32, 35, 0.72);
  border: 0;
  cursor: pointer;
}
.picked-count { flex: 1; min-width: 90px; }

.book-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 14px;
}

.mini {
  display: flex;
  gap: 12px;
  padding: 12px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  transition: border-color 0.18s, box-shadow 0.18s;
}
.mini:hover { border-color: var(--line-2); box-shadow: var(--sh-1); }
.mini .pic {
  width: 58px;
  flex-shrink: 0;
  border-radius: 6px;
  overflow: hidden;
  background: var(--surface-2);
}
.mini .pic img { width: 100%; aspect-ratio: 3/4; object-fit: cover; }
.mini .pic .none {
  aspect-ratio: 3/4;
  display: grid;
  place-items: center;
  font-family: var(--font-display);
  font-size: 18px;
  color: var(--ink-3);
}
.mini .info { flex: 1; min-width: 0; }
.mini .info .nm {
  margin-bottom: 3px;
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.mini .info .sub {
  margin-bottom: 8px;
  font-family: var(--mono);
  font-size: 10px;
  color: var(--ink-3);
}
.mini .ops { display: flex; flex-wrap: wrap; gap: 5px; }
.mini-tags { margin-top: 7px; }

.unit-block {
  margin-bottom: 16px;
  border: 1px solid var(--line);
  border-radius: var(--r);
  overflow: hidden;
  background: var(--surface);
}
.unit-block > header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 15px;
  background: var(--surface-2);
  border-bottom: 1px solid var(--line);
}
.unit-block > header .nm {
  flex: 1;
  min-width: 0;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.unit-block > header .cnt {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--ink-3);
}
.unit-block > .inner { padding: 14px; }

.bitem {
  display: flex;
  align-items: center;
  gap: 11px;
  margin-bottom: 8px;
  padding: 9px 11px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  transition: border-color 0.16s;
}
.bitem:hover { border-color: var(--line-2); }
.bitem .txt { flex: 1; min-width: 0; }
.bitem .txt .t {
  font-size: 13.5px;
  font-weight: 500;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.bitem .txt .s {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--ink-3);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.bitem .ops { display: flex; gap: 5px; flex-shrink: 0; }

.thumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 5px;
  flex-shrink: 0;
}
.thumbs .thumb {
  position: relative;
  width: 42px;
  height: 42px;
  border-radius: 6px;
  overflow: hidden;
  background: var(--surface-2);
  border: 1px solid var(--line);
}
.thumbs .thumb img { width: 100%; height: 100%; object-fit: cover; }
.thumbs .thumb .x {
  position: absolute;
  top: 0;
  right: 0;
  width: 16px;
  height: 16px;
  display: grid;
  place-items: center;
  padding: 0;
  font-size: 12px;
  line-height: 1;
  color: #fff;
  background: rgba(23, 32, 35, 0.72);
  border: 0;
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.15s;
}
.thumbs .thumb:hover .x,
.thumbs .thumb:focus-within .x { opacity: 1; }
.thumbs .thumb.add {
  display: grid;
  place-items: center;
  border-style: dashed;
  border-color: var(--line-2);
  color: var(--ink-3);
  font-size: 17px;
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s;
}
.thumbs .thumb.add:hover { border-color: var(--accent); color: var(--accent); }
.thumbs .thumb.add input[type="file"] {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}

.upload-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 12px;
}
.unit-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 10px;
  flex-wrap: wrap;
}
.up-note { font-size: 12px; color: var(--ink-3); }

/* ---------------- 登录 ---------------- */

.gate {
  flex: 1;
  display: grid;
  place-items: center;
  padding: 8vh var(--gutter) 10vh;
}
.gate-card {
  width: 100%;
  max-width: 388px;
  padding: 34px 30px 26px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  box-shadow: var(--sh-2);
  animation: rise 0.45s var(--ease) both;
}
.gate-card .art { width: 62px; margin: 0 auto 20px; color: var(--ink); }
.gate-card .art svg { width: 100%; height: auto; }
.gate-card h1 { margin: 0 0 8px; font-size: 22px; text-align: center; }
.gate-card .lede {
  margin: 0 0 22px;
  text-align: center;
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-3);
}
.gate-submit { margin-top: 14px; }
.gate-msg {
  min-height: 20px;
  margin-top: 12px;
  font-size: 12.5px;
  text-align: center;
  color: var(--ink-3);
}
.gate-msg.is-bad { color: var(--accent-deep); font-weight: 500; }
.gate-foot {
  display: grid;
  gap: 8px;
  justify-items: center;
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  text-align: center;
  font-size: 12px;
  color: var(--ink-3);
}
.gate-foot a {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  color: var(--ink-2);
}
.gate-foot a:hover { color: var(--accent); }
.shake { animation: shake 0.4s; }

/* ---------------- 弹层 / 提示 ---------------- */

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: grid;
  place-items: center;
  padding: 24px;
  background: rgba(20, 26, 28, 0.9);
  cursor: zoom-out;
  animation: fade 0.2s;
}
.lightbox img {
  max-width: 100%;
  max-height: 92vh;
  border-radius: 6px;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.45);
}

.dialog {
  width: 100%;
  max-width: 440px;
  padding: 24px 22px 18px;
  background: var(--surface);
  border-radius: var(--r-lg);
  box-shadow: var(--sh-2);
  cursor: default;
}
.dialog h3 { margin: 0 0 8px; font-size: 18px; }
.dialog .note {
  margin: 0 0 14px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--ink-2);
}
.dialog .gen-status {
  min-height: 44px;
  margin-bottom: 10px;
  padding: 10px 12px;
  background: var(--surface-2);
  border-radius: var(--r-sm);
  font-size: 12.5px;
  line-height: 1.55;
  color: var(--ink-2);
  word-break: break-word;
}
.dialog .gen-bar {
  height: 4px;
  margin-bottom: 16px;
  border-radius: 999px;
  overflow: hidden;
  background: var(--line);
}
.dialog .gen-bar span {
  display: block;
  width: 8%;
  height: 100%;
  border-radius: 999px;
  background: var(--accent);
  transition: width 0.9s linear;
}
.dialog-actions { display: flex; justify-content: flex-end; gap: 8px; }

.confirm-card {
  width: 100%;
  max-width: 370px;
  padding: 24px 22px 18px;
  background: var(--surface);
  border-radius: var(--r-lg);
  box-shadow: var(--sh-2);
  cursor: default;
}
.confirm-title {
  margin-bottom: 8px;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 600;
}
.confirm-msg {
  margin-bottom: 20px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--ink-2);
}
.confirm-actions { display: flex; justify-content: flex-end; gap: 8px; }

.toasts {
  position: fixed;
  left: 50%;
  bottom: max(24px, env(safe-area-inset-bottom));
  transform: translateX(-50%);
  z-index: 300;
  display: grid;
  gap: 8px;
  justify-items: center;
  pointer-events: none;
}
.toast {
  max-width: 90vw;
  padding: 10px 18px;
  font-size: 13px;
  font-weight: 500;
  color: #fff;
  background: var(--ink);
  border-radius: var(--r-sm);
  box-shadow: 0 12px 26px -12px rgba(23, 32, 35, 0.65);
  animation: toast-in 0.28s var(--ease);
}
.toast.is-bad { background: var(--accent-deep); }
.toast.is-out { animation: toast-out 0.24s forwards; }

/* ---------------- 空状态 / 骨架 ---------------- */

.empty {
  padding: 56px 20px;
  text-align: center;
  color: var(--ink-3);
}
.empty .big {
  margin-bottom: 6px;
  font-family: var(--font-display);
  font-size: 19px;
  color: var(--ink-2);
}
.empty .sm { font-size: 13.5px; }
.empty-action { margin-top: 18px; }
.empty-wide { grid-column: 1 / -1; }
.empty-inline { padding: 28px 16px; }
.empty-outlined {
  border: 1px dashed var(--line-2);
  border-radius: var(--r);
  background: var(--surface);
}

.skeleton {
  background: linear-gradient(90deg, var(--surface-2) 25%, #e6e9e2 40%, var(--surface-2) 60%);
  background-size: 300% 100%;
  animation: shimmer 1.4s ease-in-out infinite;
  border-radius: 6px;
}
.sk-book { border-radius: var(--r-sm); overflow: hidden; }
.sk-book .pic { aspect-ratio: 3/4; border-radius: var(--r); }
.sk-book .line { height: 11px; margin-top: 12px; }
.sk-book .line.short { width: 55%; }

.sk-detail { padding-top: 8px; }
.sk-detail-head {
  display: grid;
  grid-template-columns: 176px 1fr;
  gap: 32px;
  align-items: start;
  padding: 26px 0 30px;
}
.sk-detail-head .sk-cover { aspect-ratio: 3/4; border-radius: var(--r); }
.sk-detail-info { display: flex; flex-direction: column; gap: 12px; padding-top: 8px; }
.sk-detail-info .line { height: 12px; }
.sk-detail-info .line.short { width: 32%; }
.sk-title-line { height: 26px; width: 64%; }
.sk-meta-line { width: 42%; }
.sk-unit { margin-bottom: 22px; }
.sk-unit-bar { height: 34px; }
.sk-unit-row { height: 52px; margin-top: 1px; }

.player-skeleton {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 330px;
  gap: 22px;
  padding: 46px 0 64px;
}
.player-skeleton .sk-stage { height: 430px; border-radius: var(--r-lg); }
.player-skeleton .sk-lyrics { height: 320px; border-radius: var(--r-lg); }

/* ---------------- 动画 ---------------- */

@keyframes rise {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: none; }
}
@keyframes fade { from { opacity: 0; } to { opacity: 1; } }
@keyframes live {
  0%, 100% { opacity: 0.45; }
  50% { opacity: 1; }
}
@keyframes pulse-bar {
  0%, 100% { transform: scaleY(0.45); }
  50% { transform: scaleY(1); }
}
@keyframes shimmer {
  from { background-position: 100% 0; }
  to { background-position: 0 0; }
}
@keyframes toast-in {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: none; }
}
@keyframes toast-out { to { opacity: 0; transform: translateY(8px); } }
@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-8px); }
  40% { transform: translateX(6px); }
  60% { transform: translateX(-4px); }
  80% { transform: translateX(2px); }
}

/* ---------------- 响应式 ---------------- */

/* 桌面宽度下让侧栏在长歌词旁保持可见 */
@media (min-width: 1025px) and (min-height: 760px) {
  .side {
    position: sticky;
    top: calc(var(--header-h) + 18px);
  }
}

@media (max-width: 1080px) {
  .hero { grid-template-columns: minmax(0, 1fr) minmax(240px, 0.8fr); }
  .hero h1 { font-size: clamp(32px, 4vw, 44px); }
  .player-layout {
    grid-template-columns: minmax(0, 1fr) 300px;
    gap: 18px;
  }
  .settings-strip { grid-template-columns: 1fr 1fr; }
  .setting-file {
    grid-column: 1 / -1;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
  }
}

@media (max-width: 1024px) {
  .player-layout { grid-template-columns: 1fr; }
  .player-skeleton { grid-template-columns: 1fr; }
  .player-skeleton .sk-lyrics { display: none; }
  .side {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: start;
  }
  .settings-strip {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr) auto;
  }
  .setting-file { grid-column: auto; display: grid; justify-content: initial; }
}

@media (max-width: 900px) {
  .toolbar { grid-template-columns: 1fr; gap: 14px; }
  .toolbar .search { max-width: none; }
  .filters {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 20px;
  }
  .filter-set { flex-wrap: nowrap; }
  .book-head { grid-template-columns: 150px minmax(0, 1fr); }
  .book-head .stats { gap: 22px; }
  .book-head .actions .btn { width: 100%; }
  .stage-head { grid-template-columns: 1fr; gap: 14px; }
  .wave { height: 38px; max-width: 320px; }
  .settings-strip { grid-template-columns: 1fr 1fr; }
  .setting-file { grid-column: 1 / -1; display: flex; justify-content: space-between; }
}

@media (max-width: 720px) {
  :root { --header-h: 58px; }

  .shell { padding: 0 18px; }
  .topbar-in { gap: 12px; }
  .logo { font-size: 17px; }
  .logo svg { width: 20px; height: 20px; }
  .topnav a { padding: 5px 11px; font-size: 13px; }

  .hero {
    grid-template-columns: 1fr;
    padding: 24px 0 20px;
    gap: 0;
  }
  .hero::before { inset: 0 -30% auto 20%; height: 220px; }
  .hero-kicker { margin-bottom: 10px; font-size: 9.5px; }
  .hero h1 { font-size: clamp(27px, 7.6vw, 33px); margin-bottom: 12px; }
  .hero-lede { font-size: 13.5px; line-height: 1.7; margin-bottom: 0; }
  .hero-art { display: none; }
  /* 手机上「浏览全部」是通向正下方内容的重复入口，去掉以缩短首屏 */
  .hero-link { display: none; }

  .toolbar { padding: 12px; border-radius: var(--r); gap: 10px; }
  .search-field { gap: 4px; }
  .filters { display: grid; gap: 5px; }
  .filter-set {
    flex-wrap: nowrap;
    overflow-x: auto;
    padding-bottom: 2px;
    scrollbar-width: none;
  }
  .filter-set::-webkit-scrollbar { display: none; }
  .filter-label { flex: 0 0 32px; }
  .pill { flex: 0 0 auto; min-height: 32px; }

  .library { padding-top: 22px; }
  .shelf-head { margin-bottom: 18px; }
  .shelf-head h2 { font-size: 20px; }
  .shelf-head .count { font-size: 10px; }

  .grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 22px 14px;
    padding-bottom: 46px;
  }
  .book .title { font-size: 14.5px; margin-top: 10px; }
  .book .frame .badge { font-size: 9px; padding: 1px 5px; }

  .crumb { padding-top: 16px; font-size: 12px; }

  .book-head {
    grid-template-columns: 104px minmax(0, 1fr);
    gap: 16px;
    padding: 16px;
    margin: 14px 0 22px;
  }
  .book-head h1 { font-size: 21px; }
  .book-head .tags { margin-bottom: 12px; }
  .book-head .stats { gap: 20px; padding-top: 11px; }
  .book-head .stats b { font-size: 19px; }
  .book-head .actions { margin-top: 14px; }
  .book-head .actions .btn { width: 100%; min-height: 36px; font-size: 12.5px; }
  .book-kicker { display: none; }

  .unit { margin-bottom: 16px; }
  .unit-bar { padding: 11px 14px; gap: 8px; }
  .unit-bar .name { font-size: 15px; }
  .track { padding: 10px 14px; gap: 10px; min-height: 58px; }
  .track .thumb { display: none; }

  .player-layout { padding: 10px 0 48px; gap: 14px; }
  .player-main { gap: 14px; }
  .stage { padding: 18px 16px; border-radius: var(--r); }
  .stage h1 { font-size: 20px; }
  .stage-kicker { margin-bottom: 6px; }
  .wave { height: 34px; max-width: none; margin-top: 2px; }
  .transport { padding: 14px 12px 12px; margin-top: 16px; }
  .transport-row { gap: 6px; }
  .transport-item { min-width: 42px; }
  .orb { width: 56px; height: 56px; }
  .skip { width: 42px; height: 42px; }
  .control-label { font-size: 10.5px; }

  .settings-strip { grid-template-columns: 1fr; gap: 14px; margin-top: 16px; padding-top: 16px; }
  .setting-file { grid-column: auto; flex-direction: column; align-items: stretch; gap: 8px; }
  .setting-file .setting-label { display: none; }
  .rates { overflow-x: auto; padding-bottom: 2px; scrollbar-width: none; }
  .rates::-webkit-scrollbar { display: none; }
  .rate { flex: 1 0 40px; min-height: 34px; }
  .volume input[type="range"] { max-width: none; }
  .file-actions .btn { flex: 1; }
  .hint { display: none; }

  .lyrics { height: 240px; }
  .lyrics:has(.lyrics-empty) { height: 196px; }
  .lyrics:has(.lyrics-empty) .lyrics-empty { height: 196px; }
  .lyrics-inner { padding: 96px 12px; }
  .lyrics-empty { height: 240px; }
  .lyric-line { font-size: 14px; padding: 8px 10px; }
  .lyrics-head { padding: 10px 14px; min-height: 50px; }

  .side { grid-template-columns: 1fr; gap: 14px; }
  /* 手机上先看「本单元」，课本图片放到后面，避免大图把列表推远 */
  .side .panel:nth-child(2) { order: -1; }
  .panel { border-radius: var(--r); }
  .panel-head { padding: 10px 14px; }
  .panel-body { padding: 12px; }
  .panel-body.flush { padding: 0; }
  .textbook-view { min-height: 140px; }
  .textbook-view img { max-height: 460px; }
  .reader .main { max-height: 420px; }

  .admin-top { padding: 22px 0 16px; align-items: flex-start; }
  .admin-top h1 { font-size: 23px; }
  .admin-top .top-actions { margin-left: 0; }
  .card-body { padding: 14px; }
  .card-head { padding: 9px 14px; }
  .form-row { gap: 12px; }
  .upload-grid { grid-template-columns: 1fr; }
  .book-cards { grid-template-columns: 1fr; }
  .bitem { flex-wrap: wrap; }
  .bitem .ops { width: 100%; justify-content: flex-end; }
  .thumbs { order: 3; width: 100%; }
  .thumbs .thumb .x { opacity: 1; }
  .unit-block > header .cnt { display: none; }
  .unit-block > header { flex-wrap: wrap; }
  .mini .ops .btn { flex: 1; }

  .gate { padding: 5vh var(--gutter) 8vh; }
  .gate-card { padding: 26px 20px 22px; border-radius: var(--r); }

  .footer { padding: 12px 0 14px; min-height: 84px; }
  .footer-in { flex-direction: column; gap: 4px; }
  .door { position: static; }
  .beian { font-size: 10.5px; line-height: 1.75; gap: 1px 4px; }
  .beian img { height: 13px; }

  .sk-detail-head { grid-template-columns: 104px 1fr; gap: 16px; }
}

@media (max-width: 380px) {
  .shell { padding: 0 14px; }
  .hero h1 { font-size: 28px; }
  .grid { gap: 20px 12px; }
  .stage { padding: 16px 14px; }
  .transport-row { gap: 3px; }
  .transport-item { min-width: 38px; }
  .skip { width: 40px; height: 40px; }
  .orb { width: 54px; height: 54px; }
  .rate { min-width: 36px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

/* =========================================================
   后台控制台 · 站点定制 · 歌词工作台
   ========================================================= */

.logo-text { display: flex; flex-direction: column; line-height: 1.05; }
.logo-text small {
  margin-top: 3px;
  font-family: var(--mono);
  font-size: 8px;
  font-weight: 400;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-3);
}

.hero h1 { white-space: pre-line; }
body.hide-hero-art .hero-art { display: none; }
body.hide-hero-art .hero { grid-template-columns: minmax(0, 1fr); }
body.hide-wave .wave { display: none; }
body.hide-lyrics .lyrics-panel { display: none; }

/* 后台导航 */
.admin-nav {
  position: sticky;
  top: var(--header-h);
  z-index: 35;
  background: rgba(255, 254, 251, 0.92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: saturate(1.2) blur(10px);
  -webkit-backdrop-filter: saturate(1.2) blur(10px);
}
.admin-nav-in {
  display: flex;
  align-items: center;
  gap: 4px;
  min-height: 46px;
  overflow-x: auto;
  scrollbar-width: none;
}
.admin-nav-in::-webkit-scrollbar { display: none; }
.admin-nav-link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  flex: 0 0 auto;
  min-height: 34px;
  padding: 6px 12px;
  font-size: 12.5px;
  color: var(--ink-3);
  border-radius: 7px;
  transition: background 0.16s, color 0.16s;
}
.admin-nav-link:hover { background: var(--surface-2); color: var(--ink); }
.admin-nav-link.is-active { background: var(--ink); color: #fff; }
.admin-nav-link svg { width: 15px; height: 15px; }

/* 控制台通用 */
.admin-page { padding: 26px 0 64px; }
.console-actions { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.crumb-inline {
  padding: 0;
  margin: 0 0 5px;
  font-size: 11.5px;
  gap: 5px;
}
.crumb-inline a {
  min-width: 0;
  min-height: 24px;
  padding: 0;
  margin: 0;
  justify-content: flex-start;
}
.console-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}
.console-kicker {
  margin: 0 0 6px;
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.console-head h1 { margin: 0 0 8px; font-size: clamp(26px, 3.6vw, 36px); }
.console-head .lede {
  max-width: 72ch;
  margin: 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--ink-3);
}
.console-head > .btn { flex: 0 0 auto; }

.stat-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin-bottom: 18px;
}
.stat-card {
  padding: 15px 16px 13px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r);
}
.stat-label {
  display: block;
  margin-bottom: 5px;
  font-size: 11.5px;
  color: var(--ink-3);
}
.stat-card strong {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 600;
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
}
.stat-meta {
  display: block;
  margin-top: 3px;
  font-family: var(--mono);
  font-size: 9.5px;
  color: var(--ink-3);
}
.stat-card-accent { background: var(--accent-soft); border-color: color-mix(in srgb, var(--accent) 20%, #fff); }
.stat-card-accent .stat-label,
.stat-card-accent .stat-meta { color: var(--accent-deep); }

.console-split {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: 14px;
  margin-bottom: 18px;
}
.quick-panel,
.status-panel { align-self: stretch; }
.quick-links { display: grid; gap: 1px; background: var(--line); }
.quick-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 13px 16px;
  background: var(--surface);
  transition: background 0.16s;
}
.quick-link:hover { background: var(--surface-2); }
.quick-icon {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
  display: grid;
  place-items: center;
  font-family: var(--mono);
  font-size: 10px;
  color: var(--accent-deep);
  background: var(--accent-soft);
  border-radius: 7px;
}
.quick-link strong { display: block; font-size: 13px; font-weight: 500; }
.quick-link small { display: block; margin-top: 1px; font-size: 11.5px; color: var(--ink-3); }
.status-body { padding: 16px; display: grid; gap: 12px; }
.status-detail { margin: 0; font-size: 12.5px; line-height: 1.7; color: var(--ink-2); }
.status-facts { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; }
.status-facts > div {
  padding: 9px 10px;
  background: var(--surface-2);
  border-radius: var(--r-sm);
}
.status-facts span { display: block; font-size: 10.5px; color: var(--ink-3); }
.status-facts strong {
  display: block;
  margin-top: 2px;
  font-family: var(--mono);
  font-size: 14px;
  font-weight: 500;
  color: var(--ink);
}
.status-actions { display: flex; gap: 8px; }
.book-cards { grid-template-columns: repeat(auto-fill, minmax(330px, 1fr)); }

#books, .settings-card, #recognition, #security {
  scroll-margin-top: calc(var(--header-h) + 68px);
}
.admin-top .top-actions { display: flex; flex-wrap: wrap; gap: 8px; }

/* 文本域与开关 */
.textarea { min-height: 84px; resize: vertical; line-height: 1.65; }
.code-area {
  min-height: 150px;
  font-family: var(--mono);
  font-size: 12px;
  line-height: 1.65;
  tab-size: 2;
}
.field + .field { margin-top: 14px; }
.field-narrow { max-width: 300px; }
.inline-value {
  float: right;
  font-family: var(--mono);
  font-size: 10px;
  color: var(--ink-3);
}
.range { width: 100%; min-height: 34px; accent-color: var(--accent); cursor: pointer; }
.settings-note { margin: 0 0 16px; font-size: 12.5px; line-height: 1.7; color: var(--ink-3); }

.switch-field {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 14px;
  margin-top: 14px;
  background: var(--surface-2);
  border: 1px solid transparent;
  border-radius: var(--r-sm);
  cursor: pointer;
  transition: border-color 0.16s;
}
.switch-field:hover { border-color: var(--line-2); }
.switch-field > span { min-width: 0; }
.switch-field strong { display: block; font-size: 12.5px; font-weight: 500; }
.switch-field small { display: block; margin-top: 2px; font-size: 11.5px; line-height: 1.5; color: var(--ink-3); }
.switch {
  -webkit-appearance: none;
  appearance: none;
  width: 40px;
  height: 22px;
  flex-shrink: 0;
  margin: 0;
  background: var(--line-2);
  border-radius: 999px;
  cursor: pointer;
  position: relative;
  transition: background 0.18s;
}
.switch::after {
  content: "";
  position: absolute;
  top: 3px;
  left: 3px;
  width: 16px;
  height: 16px;
  background: #fff;
  border-radius: 50%;
  box-shadow: 0 1px 3px rgba(23, 32, 35, 0.2);
  transition: transform 0.18s var(--ease);
}
.switch:checked { background: var(--accent); }
.switch:checked::after { transform: translateX(18px); }
.switch-grid { display: grid; gap: 0 14px; }

/* 站点定制 */
.settings-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: 20px;
  align-items: start;
}
.settings-main { min-width: 0; }
.settings-jump {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-bottom: 14px;
  padding: 5px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 9px;
  overflow-x: auto;
  scrollbar-width: none;
}
.settings-jump::-webkit-scrollbar { display: none; }
.settings-jump a {
  flex: 0 0 auto;
  padding: 6px 11px;
  font-size: 12px;
  color: var(--ink-3);
  border-radius: 6px;
  transition: background 0.16s, color 0.16s;
}
.settings-jump a:hover { background: var(--surface-2); color: var(--ink); }
.settings-card { margin-bottom: 16px; }
.settings-preview-wrap { min-width: 0; }
.settings-preview {
  position: sticky;
  top: calc(var(--header-h) + 68px);
  overflow: hidden;
}
.preview-canvas {
  --pv-bg: #f5f6f3;
  --pv-accent: #a8462f;
  --pv-accent-soft: #f8eae4;
  padding: 16px;
  background: var(--pv-bg);
}
.preview-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(23, 32, 35, 0.1);
}
.preview-brand { font-family: var(--font-display); font-size: 14px; font-weight: 600; }
.preview-nav { font-size: 10px; color: #4d595f; }
.preview-body { padding: 24px 2px 8px; }
.preview-kicker {
  margin: 0 0 9px;
  font-family: var(--mono);
  font-size: 7.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #68747b;
}
.preview-title {
  margin: 0 0 10px;
  font-size: 24px;
  line-height: 1.2;
  white-space: pre-line;
}
.preview-canvas.is-sans .preview-title { font-family: var(--sans); }
.preview-lede { margin: 0 0 14px; font-size: 11px; line-height: 1.65; color: #4d595f; }
.preview-action {
  display: inline-block;
  padding: 7px 11px;
  font-size: 10px;
  color: #fff;
  background: var(--pv-accent);
  border-radius: 6px;
}
.preview-art {
  display: flex;
  align-items: flex-end;
  gap: 3px;
  height: 40px;
  margin-top: 22px;
  opacity: 0.7;
}
.preview-art span { flex: 1; background: var(--pv-accent); border-radius: 2px; }
.preview-art span:nth-child(1) { height: 30%; }
.preview-art span:nth-child(2) { height: 66%; }
.preview-art span:nth-child(3) { height: 100%; }
.preview-art span:nth-child(4) { height: 52%; }
.preview-art span:nth-child(5) { height: 24%; }

.color-row { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; }
.color-input {
  width: 42px;
  height: 38px;
  flex-shrink: 0;
  padding: 3px;
  background: var(--surface);
  border: 1px solid var(--line-2);
  border-radius: 7px;
  cursor: pointer;
}
.color-input::-webkit-color-swatch-wrapper { padding: 0; }
.color-input::-webkit-color-swatch { border: 0; border-radius: 4px; }
.color-hex { width: 108px; flex: 0 0 108px; font-family: var(--mono); font-size: 11.5px; }
.swatches { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
.swatch {
  width: 25px;
  height: 25px;
  padding: 0;
  flex-shrink: 0;
  background: var(--swatch);
  border: 1px solid rgba(23, 32, 35, 0.14);
  border-radius: 50%;
  cursor: pointer;
  transition: box-shadow 0.16s;
}
.swatch:hover { box-shadow: 0 0 0 3px var(--surface-2); }
.swatch.is-on { box-shadow: 0 0 0 2px var(--surface), 0 0 0 4px var(--ink); }
.settings-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  padding: 14px 16px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r);
  box-shadow: var(--sh-1);
}
.save-state { font-size: 11.5px; color: var(--ink-3); }
.save-state.is-dirty { color: var(--accent-deep); }

/* 歌词工作台 */
.lyrics-page { padding-top: 26px; }
.lyrics-layout {
  display: grid;
  grid-template-columns: 312px minmax(0, 1fr);
  gap: 16px;
  align-items: start;
}
.lyrics-browser {
  position: sticky;
  top: calc(var(--header-h) + 68px);
  display: flex;
  flex-direction: column;
  max-height: calc(100vh - var(--header-h) - 94px);
}
.lyrics-browser-head { padding: 12px; border-bottom: 1px solid var(--line); display: grid; gap: 9px; }
.lyrics-browser-head .search { min-height: 38px; }
.lyrics-filters { display: flex; gap: 4px; }
.lyrics-filters .pill { flex: 1; min-height: 29px; padding: 3px 7px; font-size: 11.5px; }
.lyrics-list { flex: 1 1 auto; overflow-y: auto; min-height: 220px; overscroll-behavior: contain; }
.lyrics-item {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 10px 13px;
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--line);
  text-align: left;
  cursor: pointer;
  transition: background 0.16s;
}
.lyrics-item:hover { background: var(--surface-2); }
.lyrics-item.is-active { background: var(--accent-soft); box-shadow: inset 2px 0 0 var(--accent); }
.li-main { min-width: 0; }
.li-title {
  display: block;
  font-size: 12.5px;
  font-weight: 500;
  color: var(--ink);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.li-meta {
  display: block;
  margin-top: 2px;
  font-size: 10.5px;
  color: var(--ink-3);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.li-side { flex-shrink: 0; text-align: right; }
.li-count {
  display: block;
  font-family: var(--mono);
  font-size: 9.5px;
  color: var(--ink-3);
}
.li-count.has-lyrics { color: var(--accent-deep); }
.li-time { display: block; margin-top: 2px; font-family: var(--mono); font-size: 9px; color: var(--ink-3); }
.lyrics-list-foot {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  padding: 10px 13px;
  border-top: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 9.5px;
  color: var(--ink-3);
}
.lyrics-list-foot button {
  padding: 0;
  font: inherit;
  color: var(--accent-deep);
  background: none;
  border: 0;
  cursor: pointer;
}

.lyrics-editor { min-height: 560px; padding: 20px; }
.editor-empty {
  min-height: 420px;
  display: grid;
  place-content: center;
  text-align: center;
  color: var(--ink-3);
}
.editor-empty .big { font-family: var(--font-display); font-size: 20px; color: var(--ink-2); margin-bottom: 4px; }
.editor-empty p { margin: 0; font-size: 12.5px; }
.editor-empty-lines { display: grid; justify-items: center; gap: 8px; padding: 34px 16px; }
.editor-empty-lines .btn { margin-top: 6px; }
.editor-loading { display: grid; gap: 12px; padding: 6px; }
.editor-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.editor-title { min-width: 0; }
.editor-title h2 { margin: 0 0 8px; font-size: 22px; }
.editor-title .tags { display: flex; flex-wrap: wrap; gap: 5px; }
.editor-actions { display: flex; gap: 7px; flex-wrap: wrap; }
.editor-ai-note {
  margin-top: 14px;
  padding: 9px 12px;
  font-size: 11.5px;
  line-height: 1.6;
  color: #74551a;
  background: #fcf6e7;
  border: 1px solid #ecdcb6;
  border-radius: var(--r-sm);
}
.editor-audio {
  width: 100%;
  height: 40px;
  margin: 16px 0 12px;
  accent-color: var(--accent);
}
.editor-toolbar {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px 14px;
  padding: 10px 12px;
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
}
.editor-stat { font-size: 12px; color: var(--ink-3); }
.editor-stat strong { font-family: var(--font-display); font-size: 18px; font-weight: 600; color: var(--ink); }
.editor-stat span { margin-left: 5px; font-family: var(--mono); font-size: 9.5px; }
.toolbar-cluster { display: flex; align-items: center; gap: 3px; }
.toolbar-label { font-size: 10.5px; color: var(--ink-3); margin-right: 2px; }
.toolbar-file { margin-left: auto; }
.editor-progress {
  display: grid;
  gap: 6px;
  margin-top: 10px;
  padding: 10px 12px;
  background: var(--accent-soft);
  border-radius: var(--r-sm);
}
.editor-progress[hidden] { display: none; }
.editor-progress-bar {
  display: block;
  height: 4px;
  background: rgba(var(--accent-rgb), 0.15);
  border-radius: 999px;
  overflow: hidden;
}
.editor-progress-bar i {
  display: block;
  width: 8%;
  height: 100%;
  background: var(--accent);
  border-radius: 999px;
  transition: width 0.9s linear;
}
.editor-progress p { margin: 0; font-size: 11.5px; color: var(--accent-deep); }

.lyrics-rows { display: grid; gap: 2px; margin: 12px 0; }
.lyric-row {
  display: grid;
  grid-template-columns: 28px 92px 34px minmax(0, 1fr) auto;
  align-items: center;
  gap: 7px;
  padding: 4px 5px;
  border-radius: 7px;
  transition: background 0.14s;
}
.lyric-row:hover { background: var(--surface-2); }
.row-no { font-family: var(--mono); font-size: 9.5px; color: var(--ink-3); text-align: center; }
.row-time {
  min-height: 34px;
  padding: 5px 6px;
  font-family: var(--mono);
  font-size: 11px;
  text-align: center;
}
.row-text { min-height: 34px; padding: 6px 9px; font-size: 13px; }
.row-button {
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  padding: 0;
  color: var(--ink-3);
  background: transparent;
  border: 1px solid var(--line-2);
  border-radius: 50%;
  cursor: pointer;
  transition: color 0.16s, border-color 0.16s, background 0.16s;
}
.row-button:hover { color: var(--accent-deep); border-color: var(--accent); background: var(--surface); }
.row-tools { display: flex; gap: 2px; }
.row-tools button {
  width: 27px;
  height: 28px;
  display: grid;
  place-items: center;
  padding: 0;
  font-size: 12px;
  color: var(--ink-3);
  background: transparent;
  border: 0;
  border-radius: 5px;
  cursor: pointer;
}
.row-tools button:hover { background: var(--surface); color: var(--ink); }
.row-tools button.is-danger:hover { color: var(--accent-deep); background: var(--accent-soft); }
.editor-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  padding-top: 12px;
  border-top: 1px solid var(--line);
}
.editor-add { display: flex; gap: 6px; flex-wrap: wrap; }
.file-button { cursor: pointer; }

/* 后台响应式 */
@media (max-width: 1180px) {
  .settings-layout { grid-template-columns: minmax(0, 1fr) 300px; }
  .lyrics-layout { grid-template-columns: 286px minmax(0, 1fr); }
}

@media (max-width: 1024px) {
  .settings-layout { grid-template-columns: 1fr; }
  .settings-preview { position: static; }
  .settings-preview-wrap { order: -1; }
  .settings-preview .preview-body { padding-top: 18px; }
  .lyrics-layout { grid-template-columns: 260px minmax(0, 1fr); }
  .lyrics-editor { padding: 16px; }
}

@media (max-width: 900px) {
  .stat-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .console-split { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  .admin-nav { top: var(--header-h); }
  .admin-nav-in { min-height: 44px; gap: 2px; }
  .admin-nav-link { padding: 5px 10px; font-size: 12px; gap: 5px; }
  .admin-nav-link svg { width: 14px; height: 14px; }
  .admin-page { padding: 20px 0 48px; }
  .console-head { margin-bottom: 18px; gap: 12px; }
  .console-head h1 { font-size: 25px; }
  .console-head .lede { font-size: 13px; }
  .stat-card { padding: 12px 13px; }
  .stat-card strong { font-size: 23px; }
  .quick-link { padding: 11px 13px; }
  .settings-layout { gap: 14px; }
  .settings-preview-wrap { order: -1; }
  .preview-canvas { padding: 12px; }
  .preview-top { padding-bottom: 8px; }
  .preview-body { padding: 14px 0 2px; }
  .preview-title { font-size: 19px; margin-bottom: 7px; }
  .preview-lede { margin-bottom: 10px; }
  .preview-art { display: none; }
  .color-row { gap: 7px; }
  .color-hex { flex: 1 1 90px; width: auto; }
  .swatches { width: 100%; }
  .switch-field { padding: 11px 12px; }
  .settings-actions { position: sticky; bottom: 8px; z-index: 20; }
  .settings-actions .btn { flex: 1; }
  .save-state { width: 100%; text-align: center; }

  .lyrics-layout { grid-template-columns: 1fr; gap: 12px; }
  .lyrics-browser {
    position: static;
    max-height: none;
    order: 0;
  }
  .lyrics-list { max-height: 250px; }
  .lyrics-editor { min-height: 0; padding: 14px; }
  .editor-head { gap: 10px; }
  .editor-title h2 { font-size: 19px; }
  .editor-actions { width: 100%; }
  .editor-actions .btn { flex: 1; }
  .editor-toolbar { gap: 7px 10px; padding: 9px; }
  .toolbar-file { margin-left: 0; width: 100%; flex-wrap: wrap; }
  .toolbar-file .btn { flex: 1; }
  .lyric-row {
    grid-template-columns: 24px minmax(78px, 104px) 32px auto;
    grid-template-areas:
      "no time jump tools"
      "text text text text";
    gap: 5px;
    padding: 6px 4px;
    border-bottom: 1px solid var(--line);
  }
  .lyric-row .row-no { grid-area: no; }
  .lyric-row .row-time { grid-area: time; }
  .lyric-row .row-button { grid-area: jump; }
  .lyric-row .row-text { grid-area: text; }
  .lyric-row .row-tools { grid-area: tools; }
  .row-time { min-height: 32px; }
  .row-text { min-height: 36px; font-size: 13.5px; }
  .editor-footer { align-items: stretch; }
  .editor-add { width: 100%; }
  .editor-add .btn { flex: 1; }
  .save-state { text-align: left; }
}