/* glossary 独立列表页样式 - 与首页暖色调保持一致 */
:root {
  --paper: #fbf6ee;
  --paper-strong: #f5ecdc;
  --paper-deep: #eadbc8;
  --ink: #3d2c1f;
  --ink-soft: #5b4329;
  --muted: #8a6f54;
  --line: rgba(110, 79, 54, 0.14);
  --shadow: 0 14px 32px rgba(81, 58, 35, 0.1);
}

* { box-sizing: border-box; }

body.glossary-body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  background: linear-gradient(180deg, #fbf6ee 0%, #f3e7d2 100%);
  color: var(--ink);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

.glossary-shell {
  max-width: 1040px;
  margin: 0 auto;
  padding: 32px 24px 56px;
}

.glossary-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 10px;
}

.glossary-topbar__brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--ink-soft);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.glossary-topbar__brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: 8px;
  background: linear-gradient(135deg, #f8f1e7, #eadbc8);
  color: #6e4f36;
  font-weight: 700;
}

.glossary-topbar__back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: 999px;
  background: var(--paper-strong);
  border: 1px solid var(--line);
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 0.88rem;
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.glossary-topbar__back:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 14px rgba(94, 63, 39, 0.12);
}

.glossary-hero {
  text-align: center;
  padding: 1px 12px 1px;
  margin-bottom: 20px;
}

.glossary-hero__heading {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 12px;
  margin: 0;
}

.glossary-hero__eyebrow {
  justify-self: end;
}

.glossary-hero__title-wrap {
  position: relative;
  display: inline-block;
  justify-self: start;
}

.glossary-hero__heading::after {
  content: '';
}

.glossary-hero__eyebrow {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 999px;
  background: var(--paper-strong);
  border: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  white-space: nowrap;
}

.glossary-hero__title-wrap {
  position: relative;
  display: inline-block;
}

.glossary-hero__title {
  margin: 0;
  font-size: clamp(1.6rem, 2.6vw, 2.1rem);
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--ink);
}

/* 词条总数徽标：紧贴 title 右上角 */
.glossary-hero__count {
  position: absolute;
  top: 2px;
  right: -6px;
  transform: translate(100%, 0);
  display: inline-flex;
  align-items: center;
  height: 22px;
  padding: 0 10px;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: #9a6a32;
  background: linear-gradient(135deg, #fbf2dd, #f4debb);
  border: 1px solid rgba(178, 124, 58, 0.22);
  border-radius: 999px;
  white-space: nowrap;
  box-shadow: 0 2px 6px rgba(178, 124, 58, 0.10);
  z-index: 2;
}

.glossary-hero__desc {
  max-width: 720px;
  margin: 0 auto;
  color: var(--ink-soft);
  font-size: 1rem;
  line-height: 1.7;
}

.glossary-alphabet {
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  gap: 6px;
  margin: 18px 0 16px;
  padding: 12px 16px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--paper-strong);
  box-shadow: var(--shadow);
  width: 100%;
}

.glossary-alphabet__label {
  font-size: 0.82rem;
  color: var(--muted);
  letter-spacing: 0.06em;
  margin-right: 6px;
}

.glossary-alphabet__chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 27px;
  height: 27px;
  padding: 0 7px;
  font-size: 0.81rem;
  font-weight: 600;
  color: var(--ink-soft);
  text-decoration: none;
  border-radius: 7px;
  background: linear-gradient(135deg, #f8f1e7, #eadbc8);
  border: 1px solid rgba(110, 79, 54, 0.1);
  transition: transform 180ms ease, box-shadow 180ms ease, color 180ms ease;
}

.glossary-alphabet__chip:hover {
  transform: translateY(-1px);
  color: var(--ink);
  box-shadow: 0 6px 12px rgba(94, 63, 39, 0.14);
}

/* 单按钮语言切换：当前显示当前语言，点击切到另一种 */
.glossary-lang-toggle {
  appearance: none;
  border: 1px solid rgba(110, 79, 54, 0.12);
  background: linear-gradient(135deg, #f8f1e7, #eadbc8);
  color: var(--ink);
  font: inherit;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  padding: 0;
  height: 24px;
  width: 40px;
  min-width: 40px;
  border-radius: 7px;
  cursor: pointer;
  flex: 0 0 40px;
  order: 99;
  margin-left: auto;
  box-shadow: 0 2px 6px rgba(94, 63, 39, 0.14);
  transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

.glossary-lang-toggle:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 10px rgba(94, 63, 39, 0.18);
}

.glossary-lang-toggle:focus-visible {
  outline: 2px solid rgba(110, 79, 54, 0.45);
  outline-offset: 2px;
}

.glossary-group {
  margin: 0 0 28px;
}

.glossary-group__heading {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin: 8px 0 14px;
  padding: 0 4px 6px;
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--ink);
  border-bottom: 1px solid var(--line);
}

.glossary-group__heading-meta {
  font-size: 0.78rem;
  font-weight: 400;
  color: var(--muted);
  letter-spacing: 0.04em;
}

.glossary-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 14px;
}

.glossary-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 12px 16px;
  background: var(--paper-strong);
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: var(--shadow);
  text-decoration: none;
  color: inherit;
  transition: transform 220ms ease, box-shadow 220ms ease;
}

.glossary-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 18px 34px rgba(81, 58, 35, 0.16);
}

.glossary-card__header {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.glossary-card__title {
  margin: 0;
  font-size: 1.02rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--ink);
}

.glossary-card__desc {
  margin: 0;
  font-size: 0.82rem;
  color: var(--ink-soft);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.glossary-card__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  margin-top: 6px;
}

.glossary-cat {
  display: inline-block;
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  padding: 2px 8px;
  border-radius: 999px;
  text-transform: uppercase;
  font-weight: 600;
}

.glossary-cat--ml { background: rgba(76, 110, 245, 0.12); color: #1f3a93; }
.glossary-cat--dl { background: rgba(225, 112, 36, 0.14); color: #a04a14; }
.glossary-cat--rag { background: rgba(15, 142, 106, 0.14); color: #0e6a4f; }
.glossary-cat--agent { background: rgba(155, 81, 224, 0.14); color: #5b21a0; }
.glossary-cat--llm { background: rgba(20, 138, 156, 0.14); color: #0b6a78; }
.glossary-cat--gen { background: rgba(220, 90, 140, 0.14); color: #a02c63; }
.glossary-cat--infra { background: rgba(214, 158, 46, 0.14); color: #8a6a17; }
.glossary-cat--cluster { background: rgba(110, 79, 54, 0.14); color: #4a3a28; }

.glossary-alias {
  display: inline-block;
  font-size: 0.74rem;
  color: var(--muted);
  font-style: italic;
}

.glossary-empty {
  text-align: center;
  padding: 60px 20px;
  color: var(--muted);
  font-style: italic;
}

.glossary-footer {
  margin-top: 48px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  text-align: center;
  color: var(--muted);
  font-size: 0.84rem;
  letter-spacing: 0.04em;
}

.glossary-footer__sep { margin: 0 10px; opacity: 0.6; }
.glossary-footer a { color: var(--ink-soft); text-decoration: none; }
.glossary-footer a:hover { text-decoration: underline; }

@media (max-width: 720px) {
  .glossary-shell { padding: 12px 16px 40px; }
  .glossary-hero { padding: 8px 4px 14px; }
  .glossary-grid { grid-template-columns: 1fr; gap: 10px; }
  .glossary-alphabet { padding: 10px 12px; gap: 8px; }
  .glossary-alphabet__chip { min-width: 23px; height: 23px; font-size: 0.7rem; border-radius: 6px; }
  .glossary-lang-toggle { height: 22px; width: 36px; min-width: 36px; font-size: 0.72rem; }
  .glossary-group__heading { font-size: 1.2rem; }
}

/* 回到顶部按钮：与文章页 .book-back-to-top 风格一致，位置贴右下（glossary 无 floating toolbox） */
.glossary-body .book-back-to-top {
  position: fixed;
  right: 124px;
  bottom: 28px;
  z-index: 18;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  padding: 0;
  border: 0;
  border-radius: 999px;
  background: rgba(255, 252, 247, 0.94);
  color: rgba(81, 58, 35, 0.92);
  box-shadow: 0 10px 24px rgba(81, 58, 35, 0.16);
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transform: translateY(12px);
  transition:
    opacity 0.2s ease,
    transform 0.2s ease,
    background 0.2s ease,
    box-shadow 0.2s ease;
}

.glossary-body .book-back-to-top:hover {
  background: #fff;
  box-shadow: 0 14px 28px rgba(81, 58, 35, 0.2);
}

.glossary-body .book-back-to-top:focus-visible {
  outline: 2px solid rgba(112, 85, 54, 0.28);
  outline-offset: 3px;
}

.glossary-body .book-back-to-top.is-visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.glossary-body .book-back-to-top svg {
  width: 22px;
  height: 22px;
}