/* === AI 100 講 — Dark AI Tech Theme === */

:root {
  --bg-deep: #0a0f1a;
  --bg-primary: #0f172a;
  --bg-card: #1e293b;
  --bg-card-hover: #263548;
  --cyan: #06b6d4;
  --cyan-dim: rgba(6, 182, 212, 0.15);
  --cyan-glow: rgba(6, 182, 212, 0.3);
  --purple: #8b5cf6;
  --purple-dim: rgba(139, 92, 246, 0.15);
  --teal: #2dd4bf;
  --text: #e2e8f0;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  --border: rgba(148, 163, 184, 0.12);
  --border-glow: rgba(6, 182, 212, 0.25);
  --card-shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
  --radius: 12px;
  --radius-sm: 8px;
  --max-w: 1200px;
  --font-sans: "Noto Sans TC", -apple-system, system-ui, sans-serif;
  --font-mono: "JetBrains Mono", monospace;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

/* reading-glasses skill: 22px base — 正文 22px，最小字級 16px */
html { font-size: 22px; }

/* 全站最小字級保底：小標籤 ≥ 16px */
.card-module, .ipas-topic-tag,
.dol-area-tag, .dol-principle-tag, .dol-label {
  font-size: max(16px, 0.72rem);
}

body {
  font-family: var(--font-sans);
  color: var(--text);
  line-height: 1.8;
  background: var(--bg-deep);
  min-height: 100vh;
}

a { color: var(--cyan); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--teal); }

.container { max-width: var(--max-w); margin: 0 auto; padding: 0 1.5rem; }

/* === Header === */
.site-header {
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 0.8rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner { display: flex; justify-content: space-between; align-items: center; }

.site-title {
  color: var(--cyan);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.5px;
}
.site-title:hover { color: var(--teal); text-decoration: none; }

.site-header nav a {
  color: var(--text-muted);
  margin-left: 1.8rem;
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s;
}
.site-header nav a:hover { color: var(--cyan); text-decoration: none; }
.site-header nav a.nav-cta {
  color: var(--cyan);
  border: 1px solid var(--cyan);
  border-radius: 6px;
  padding: 0.3rem 0.8rem;
  margin-left: 2rem;
  font-weight: 600;
}
.site-header nav a.nav-cta:hover { background: rgba(6,182,212,0.1); color: var(--cyan); }

/* Hamburger toggle — hidden on desktop */
.nav-toggle { display: none; }

/* Header mobile */
@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    z-index: 101;
  }
  .nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-muted);
    border-radius: 2px;
    transition: transform 0.3s, opacity 0.3s;
  }
  .nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-toggle.open span:nth-child(2) { opacity: 0; }
  .nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

  .nav-menu {
    display: none;
    width: 100%;
    flex-direction: column;
    align-items: center;
    gap: 0;
    padding: 0.5rem 0 0.8rem;
  }
  .nav-menu.open {
    display: flex;
  }
  .header-inner {
    flex-wrap: wrap;
  }
  .site-header .nav-menu a {
    margin: 0;
    padding: 10px 0;
    font-size: 16px;
    width: 100%;
    text-align: center;
    border-bottom: 1px solid var(--border);
  }
  .site-header .nav-menu a:last-child { border-bottom: none; }
  .site-header .nav-menu a.nav-cta {
    margin: 8px 0 0;
    padding: 10px 20px;
    border: 1px solid var(--cyan);
    border-radius: 6px;
    width: auto;
    font-size: 15px;
  }
}

/* === Hero === */
.hero {
  text-align: center;
  padding: 4rem 1rem 2.5rem;
  position: relative;
  overflow: hidden;
}

.hero-glow {
  position: absolute;
  width: 500px; height: 500px;
  background: radial-gradient(circle, var(--cyan-glow) 0%, transparent 70%);
  top: -150px; left: 50%; transform: translateX(-50%);
  pointer-events: none;
  opacity: 0.4;
}

.hero-banner {
  max-width: 560px;
  margin: 0 auto 1.5rem;
  padding: 2rem 2.5rem 1.8rem;
  background: linear-gradient(135deg, rgba(6,182,212,0.08) 0%, rgba(139,92,246,0.08) 100%);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius);
  box-shadow: 0 0 40px rgba(6,182,212,0.08), var(--card-shadow);
  position: relative;
}

.hero-title {
  font-size: 3rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--cyan), var(--purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 0.4rem;
  letter-spacing: 0.04em;
}

.hero-tagline {
  font-size: 1rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.hero-desc {
  color: var(--text-dim);
  font-size: 0.9rem;
  line-height: 1.7;
  max-width: 680px;
  margin: 0 auto 2rem;
}

.hero-desc strong { color: var(--cyan); }

/* === Filter Bar === */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
  margin: 1.5rem 0 2rem;
}

.filter-btn {
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text-muted);
  padding: 0.4rem 1rem;
  border-radius: 20px;
  cursor: pointer;
  font-size: 0.85rem;
  font-family: var(--font-mono);
  transition: all 0.2s;
}

.filter-btn:hover {
  border-color: var(--cyan);
  color: var(--cyan);
}

.filter-btn.active {
  background: linear-gradient(135deg, var(--cyan), var(--purple));
  color: #fff;
  border-color: transparent;
}

/* === Section Title === */
.section-title {
  font-size: 1.4rem;
  color: var(--text);
  margin-bottom: 1.5rem;
  padding-left: 0.8rem;
  border-left: 3px solid var(--cyan);
}

/* === Modules Grid === */
.modules-overview { margin-bottom: 3rem; }

.modules-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 1.2rem;
}

.module-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: all 0.25s;
  cursor: pointer;
  text-decoration: none;
  color: inherit;
  display: block;
}

.module-card:hover {
  border-color: var(--border-glow);
  box-shadow: 0 0 30px rgba(6, 182, 212, 0.08);
  transform: translateY(-2px);
}

.module-cover {
  position: relative;
  height: 160px;
  overflow: hidden;
  background: var(--bg-primary);
}

.module-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.85;
}

.module-icon {
  position: absolute;
  top: 0.8rem;
  right: 0.8rem;
  font-size: 2rem;
  filter: drop-shadow(0 2px 8px rgba(0,0,0,0.5));
}

.module-info { padding: 1rem 1.2rem; }

.module-info h3 {
  font-size: 1rem;
  color: var(--cyan);
  margin-bottom: 0.4rem;
}

.module-info p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 0.5rem;
}

.module-count {
  font-size: 0.75rem;
  color: var(--text-dim);
  font-family: var(--font-mono);
  background: var(--cyan-dim);
  padding: 0.15rem 0.5rem;
  border-radius: 10px;
}

/* === Lectures Grid === */
.lectures-section { margin-bottom: 3rem; }

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

.lecture-card {
  display: flex;
  flex-direction: column;
  background: var(--bg-card);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: all 0.2s;
  text-decoration: none;
}

.lecture-card:hover {
  transform: translateY(-3px);
  border-color: var(--border-glow);
  box-shadow: 0 8px 32px rgba(6, 182, 212, 0.1);
  text-decoration: none;
}

.card-image {
  height: 160px;
  overflow: hidden;
  background: linear-gradient(135deg, var(--bg-primary), var(--bg-card));
}

.card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.9;
  transition: transform 0.3s;
}

.lecture-card:hover .card-image img { transform: scale(1.05); }

.card-image.no-img {
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--cyan-dim), var(--purple-dim));
}

.card-body { padding: 1rem; flex: 1; }

.card-badge {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--cyan);
}

.card-module {
  float: right;
  font-size: 0.7rem;
  background: var(--purple-dim);
  color: var(--purple);
  padding: 0.1rem 0.5rem;
  border-radius: 10px;
  font-family: var(--font-mono);
}

.card-body h3 {
  font-size: 1rem;
  color: var(--text);
  margin: 0.4rem 0 0.3rem;
  line-height: 1.4;
}

.card-body p {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* === Module Detail Page === */
.module-detail {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

.module-detail .back-link {
  display: inline-block;
  margin-bottom: 1rem;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.module-detail .back-link:hover { color: var(--cyan); }

.module-detail-hero {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 1.5rem;
  height: 240px;
}

.module-detail-hero img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.module-detail-hero-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 2rem 1.5rem 1.5rem;
  background: linear-gradient(transparent, rgba(10, 15, 26, 0.9));
}

.module-detail-icon { font-size: 2rem; margin-bottom: 0.3rem; display: block; }

.module-detail-hero-overlay h1 {
  font-size: 1.6rem;
  color: var(--cyan);
  margin-bottom: 0.3rem;
}

.module-detail-hero-overlay p {
  font-size: 0.95rem;
  color: var(--text-muted);
}

.module-detail-stats {
  margin-bottom: 1.5rem;
  color: var(--text-dim);
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

.module-detail-lectures {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.module-lecture-card {
  display: flex;
  gap: 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all 0.25s;
  text-decoration: none;
  color: inherit;
}

.module-lecture-card:hover {
  border-color: var(--border-glow);
  box-shadow: 0 0 20px rgba(6, 182, 212, 0.08);
  transform: translateX(4px);
}

.module-lecture-img {
  width: 180px;
  min-height: 120px;
  flex-shrink: 0;
  overflow: hidden;
}

.module-lecture-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.module-lecture-info {
  padding: 1rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.module-lecture-id {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--purple);
  margin-bottom: 0.3rem;
}

.module-lecture-info h3 {
  font-size: 1rem;
  color: var(--text);
  margin-bottom: 0.3rem;
}

.module-lecture-info p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 0.4rem;
}

.module-lecture-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
}

.module-nav {
  display: flex;
  justify-content: space-between;
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}

.module-nav a {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.module-nav a:hover { color: var(--cyan); }

@media (max-width: 768px) {
  .module-detail-hero { height: 180px; }
  .module-lecture-card { flex-direction: column; }
  .module-lecture-img { width: 100%; min-height: 160px; }
  .module-nav { flex-direction: column; gap: 0.8rem; }
}

/* === Lecture Detail === */
.lecture-detail { padding: 2rem 0 3rem; max-width: 720px; margin: 0 auto; }

.back-link {
  font-size: 0.85rem;
  color: var(--text-dim);
  display: inline-block;
  margin-bottom: 1.2rem;
  transition: color 0.2s;
}
.back-link:hover { color: var(--cyan); }

.lecture-header { margin-bottom: 2rem; }

.module-badge, .ipas-badge {
  display: inline-block;
  padding: 0.2rem 0.7rem;
  border-radius: 12px;
  font-size: 0.8rem;
  margin-right: 0.5rem;
  margin-bottom: 0.5rem;
}

.module-badge {
  background: var(--cyan-dim);
  color: var(--cyan);
}

.ipas-badge {
  background: var(--purple-dim);
  color: var(--purple);
}

.lecture-header h1 {
  font-size: 1.7rem;
  color: var(--text);
  margin: 0.5rem 0;
  line-height: 1.4;
}

.tagline {
  color: var(--text-muted);
  font-size: 1.05rem;
  margin-top: 0.3rem;
}

.tag-list { margin-top: 0.8rem; display: flex; flex-wrap: wrap; gap: 0.4rem; }

.tag {
  font-size: 0.75rem;
  background: var(--bg-card);
  color: var(--text-dim);
  padding: 0.2rem 0.6rem;
  border-radius: 10px;
  border: 1px solid var(--border);
}

.lecture-hero-image {
  margin: 1.5rem 0 2rem;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
}

.lecture-hero-image img {
  width: 100%;
  height: auto;
  display: block;
}

/* === Lecture Content === */
.lecture-content {
  font-size: 1rem;
  line-height: 2;
}

.lecture-content h2 {
  font-size: 1.3rem;
  color: var(--cyan);
  margin: 2.5rem 0 1rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--border);
}

.lecture-content h3 {
  font-size: 1.1rem;
  color: var(--text);
  margin: 1.8rem 0 0.8rem;
}

.lecture-content p { margin-bottom: 1rem; }

.lecture-content ul, .lecture-content ol {
  padding-left: 1.5rem;
  margin-bottom: 1rem;
}

.lecture-content li { margin-bottom: 0.4rem; }

.lecture-content strong { color: var(--cyan); font-weight: 600; }

.lecture-content code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  background: var(--bg-card);
  padding: 0.15em 0.4em;
  border-radius: 4px;
  color: var(--teal);
}

.lecture-content blockquote {
  border-left: 3px solid var(--purple);
  padding: 0.8rem 1.2rem;
  margin: 1.2rem 0;
  background: var(--purple-dim);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--text-muted);
}

.lecture-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.2rem 0;
  font-size: 0.9rem;
}

.lecture-content th {
  background: var(--bg-card);
  color: var(--cyan);
  padding: 0.7rem 1rem;
  text-align: left;
  border-bottom: 2px solid var(--border-glow);
}

.lecture-content td {
  padding: 0.6rem 1rem;
  border-bottom: 1px solid var(--border);
}

.lecture-content tr:hover td { background: rgba(6, 182, 212, 0.03); }

/* === Cornell Note / Learning Objectives === */
.cornell-note {
  margin: 1.5rem 0 2rem;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border-glow);
  background: var(--bg-card);
}

.cornell-note-header {
  background: linear-gradient(135deg, rgba(6, 182, 212, 0.12), rgba(139, 92, 246, 0.12));
  padding: 0.8rem 1.2rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  border-bottom: 1px solid var(--border);
}

.cornell-note-header h3 {
  font-size: 0.95rem;
  color: var(--cyan);
  margin: 0;
}

.cornell-body {
  display: grid;
  grid-template-columns: 140px 1fr;
  min-height: 0;
}

.cornell-cue {
  padding: 1rem;
  border-right: 2px solid var(--border-glow);
  background: rgba(6, 182, 212, 0.04);
}

.cornell-cue-item {
  font-size: 0.82rem;
  color: var(--cyan);
  font-weight: 600;
  margin-bottom: 0.8rem;
  line-height: 1.4;
}

.cornell-notes {
  padding: 1rem 1.2rem;
}

.cornell-notes p, .cornell-notes li {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 0.5rem;
}

.cornell-summary {
  padding: 0.8rem 1.2rem;
  border-top: 2px solid var(--border-glow);
  background: rgba(139, 92, 246, 0.06);
  font-size: 0.88rem;
  color: var(--text);
  font-weight: 500;
}

/* === iPAS Topic Tags === */
.ipas-topics {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.6rem;
}

.ipas-topic-tag {
  font-size: 0.72rem;
  padding: 0.2rem 0.6rem;
  border-radius: 10px;
  font-weight: 500;
  border: 1px solid;
}

.ipas-topic-tag[data-level="L1"] {
  background: rgba(6, 182, 212, 0.1);
  color: var(--cyan);
  border-color: rgba(6, 182, 212, 0.25);
}

.ipas-topic-tag[data-level="L2"] {
  background: rgba(139, 92, 246, 0.1);
  color: var(--purple);
  border-color: rgba(139, 92, 246, 0.25);
}

/* === Answer Toggle === */
.answer-toggle {
  margin: 1.5rem 0;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  overflow: hidden;
}

.answer-toggle summary {
  padding: 0.8rem 1.2rem;
  background: var(--bg-card);
  color: var(--cyan);
  cursor: pointer;
  font-weight: 600;
  font-size: 0.95rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: background 0.2s;
  list-style: none;
}

.answer-toggle summary::-webkit-details-marker { display: none; }

.answer-toggle summary::before {
  content: "▶";
  font-size: 0.7rem;
  transition: transform 0.2s;
  display: inline-block;
}

.answer-toggle[open] summary::before {
  transform: rotate(90deg);
}

.answer-toggle summary:hover {
  background: var(--bg-card-hover);
}

.answer-content {
  padding: 1.2rem;
  background: rgba(6, 182, 212, 0.03);
  border-top: 1px solid var(--border);
}

.answer-content img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-sm);
  margin-bottom: 0.8rem;
}

.answer-content p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 0.6rem;
}

/* Answer Cards */
.answer-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-left: 3px solid var(--cyan);
  border-radius: var(--radius-sm);
  padding: 1rem 1.2rem;
  margin: 1rem 0;
}

.answer-card h4 {
  color: var(--cyan);
  font-size: 0.95rem;
  margin-bottom: 0.8rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--border);
}

.answer-card table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
  margin: 0.5rem 0;
}

.answer-card th {
  background: rgba(6, 182, 212, 0.1);
  color: var(--cyan);
  padding: 0.5rem 0.6rem;
  text-align: left;
  border-bottom: 2px solid var(--border);
  font-weight: 600;
  font-size: 0.8rem;
}

.answer-card td {
  padding: 0.5rem 0.6rem;
  border-bottom: 1px solid var(--border);
  color: var(--text-muted);
  line-height: 1.6;
}

.answer-card tr:last-child td {
  border-bottom: none;
}

.answer-card strong {
  color: var(--text);
}

.answer-card ul, .answer-card ol {
  padding-left: 1.2rem;
  margin: 0.5rem 0;
}

.answer-card li {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 0.3rem;
}

.answer-card blockquote {
  background: rgba(6, 182, 212, 0.06);
  border-left: 3px solid var(--purple);
  padding: 0.6rem 1rem;
  margin: 0.8rem 0 0.3rem;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.7;
}

.answer-card blockquote strong {
  color: var(--purple);
}

/* === Keywords Check === */
.keywords-check {
  margin: 2.5rem 0;
  padding: 1.2rem 1.5rem;
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 1px solid var(--border-glow);
}

.keywords-check h3 {
  font-size: 1rem;
  color: var(--cyan);
  margin-bottom: 0.8rem;
}

.keywords-list { display: flex; flex-wrap: wrap; gap: 0.8rem; }

.keyword-item {
  font-size: 0.9rem;
  background: var(--cyan-dim);
  padding: 0.3rem 0.8rem;
  border-radius: 8px;
}

/* === Lecture Nav === */
.lecture-nav {
  display: flex;
  justify-content: space-between;
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  gap: 1rem;
}

.nav-prev, .nav-next {
  font-size: 0.85rem;
  color: var(--text-muted);
  padding: 0.6rem 1rem;
  background: var(--bg-card);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  transition: all 0.2s;
  max-width: 48%;
}

.nav-prev:hover, .nav-next:hover {
  border-color: var(--cyan);
  color: var(--cyan);
  text-decoration: none;
}

.nav-next { text-align: right; margin-left: auto; }

/* === Track Toggle (Dual Navigation) === */
.track-toggle {
  display: flex;
  justify-content: center;
  gap: 0;
  margin: 1.5rem auto 0;
  max-width: 400px;
  border-radius: 25px;
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--bg-card);
}

.track-btn {
  flex: 1;
  padding: 0.6rem 1.2rem;
  border: none;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 0.9rem;
  font-family: var(--font-sans);
  font-weight: 600;
  transition: all 0.25s;
}

.track-btn:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.03);
}

.track-btn.active {
  background: linear-gradient(135deg, var(--cyan), var(--purple));
  color: #fff;
}

/* === Track Intro === */
.track-intro {
  margin-bottom: 1.2rem;
}

.track-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-top: 0.5rem;
}

.track-desc a {
  color: var(--cyan);
  font-weight: 600;
}

/* === DOL Filter Bar === */
.dol-filter-bar .filter-btn.dol {
  font-family: var(--font-sans);
  font-size: 0.82rem;
}

.dol-filter-bar .filter-btn.dol.active {
  background: linear-gradient(135deg, #f59e0b, #ef4444);
}

/* === DOL Tags (Lecture Detail) === */
.dol-tags {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem;
  margin-top: 0.6rem;
}

.dol-label {
  font-size: 0.7rem;
  color: var(--text-dim);
  font-weight: 600;
  padding: 0.15rem 0.5rem;
  background: rgba(245, 158, 11, 0.1);
  border: 1px solid rgba(245, 158, 11, 0.2);
  border-radius: 10px;
}

.dol-area-tag, .dol-principle-tag {
  font-size: 0.72rem;
  padding: 0.2rem 0.6rem;
  border-radius: 10px;
  font-weight: 500;
  transition: all 0.2s;
  text-decoration: none;
}

.dol-area-tag {
  background: rgba(245, 158, 11, 0.1);
  color: #f59e0b;
  border: 1px solid rgba(245, 158, 11, 0.25);
}

.dol-area-tag:hover {
  background: rgba(245, 158, 11, 0.2);
  color: #fbbf24;
  text-decoration: none;
}

.dol-principle-tag {
  background: rgba(16, 185, 129, 0.1);
  color: #10b981;
  border: 1px solid rgba(16, 185, 129, 0.25);
}

.dol-principle-tag:hover {
  background: rgba(16, 185, 129, 0.2);
  color: #34d399;
  text-decoration: none;
}

/* === DOL Homepage Overview === */
.dol-overview { margin-bottom: 3rem; }

.dol-areas-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 1.2rem;
}

.dol-area-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 1.2rem;
  border: 1px solid var(--border);
  transition: all 0.25s;
}

.dol-area-card:hover {
  border-color: rgba(245, 158, 11, 0.3);
  box-shadow: 0 0 30px rgba(245, 158, 11, 0.06);
  transform: translateY(-2px);
}

.dol-area-card-header {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  padding-left: 0.8rem;
  margin-bottom: 0.8rem;
}

.dol-area-card-icon { font-size: 1.8rem; }

.dol-area-card-header h3 {
  font-size: 1rem;
  color: #f59e0b;
  margin: 0;
}

.dol-area-card-en {
  font-size: 0.75rem;
  color: var(--text-dim);
  font-style: italic;
}

.dol-area-card p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 0.6rem;
}

.dol-area-card-count {
  font-size: 0.75rem;
  color: var(--text-dim);
  font-family: var(--font-mono);
  background: rgba(245, 158, 11, 0.1);
  padding: 0.15rem 0.5rem;
  border-radius: 10px;
}

.dol-framework-link {
  text-align: center;
  margin-top: 1.5rem;
}

.dol-framework-link a {
  color: #f59e0b;
  font-weight: 600;
  font-size: 0.95rem;
}

.dol-framework-link a:hover { color: #fbbf24; }

/* === DOL Framework Page === */
.dol-page { padding: 2rem 0 3rem; max-width: 900px; margin: 0 auto; }

.dol-hero { text-align: center; margin-bottom: 3rem; }

.dol-hero-badge {
  display: inline-block;
  padding: 0.3rem 1rem;
  background: rgba(245, 158, 11, 0.1);
  border: 1px solid rgba(245, 158, 11, 0.3);
  border-radius: 20px;
  color: #f59e0b;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 0.8rem;
}

.dol-hero h1 {
  font-size: 2.2rem;
  font-weight: 700;
  background: linear-gradient(135deg, #f59e0b, #ef4444);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 0.5rem;
}

.dol-hero-sub {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 0.5rem;
}

.dol-hero-desc {
  color: var(--text-dim);
  font-size: 0.88rem;
  max-width: 700px;
  margin: 0 auto 1rem;
  line-height: 1.7;
}

.dol-source {
  font-size: 0.82rem;
  color: var(--text-dim);
}

.dol-source a { color: #f59e0b; }

/* DOL Comparison */
.dol-comparison { margin-bottom: 3rem; }

.comparison-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.2rem;
}

.comparison-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
}

.comparison-header {
  padding: 0.8rem 1.2rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  border-bottom: 1px solid var(--border);
}

.comparison-header.dol-side {
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.12), rgba(239, 68, 68, 0.08));
}

.comparison-header.ipas-side {
  background: linear-gradient(135deg, rgba(6, 182, 212, 0.12), rgba(139, 92, 246, 0.08));
}

.comparison-header h3 {
  font-size: 0.9rem;
  color: var(--text);
  margin: 0;
}

.comparison-card ul {
  list-style: none;
  padding: 1rem 1.2rem;
}

.comparison-card li {
  font-size: 0.85rem;
  color: var(--text-muted);
  padding: 0.3rem 0;
  border-bottom: 1px solid var(--border);
  line-height: 1.6;
}

.comparison-card li:last-child { border-bottom: none; }

/* DOL Area Blocks */
.dol-areas-section, .dol-principles-section, .dol-matrix-section { margin-bottom: 3rem; }

.dol-area-block {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  border: 1px solid var(--border);
}

.dol-area-header {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  padding-left: 0.8rem;
  border-left: 4px solid;
  margin-bottom: 0.8rem;
}

.dol-area-icon { font-size: 1.5rem; }

.dol-area-header h3 {
  font-size: 1.1rem;
  color: var(--text);
  margin: 0;
}

.dol-area-en {
  font-size: 0.78rem;
  color: var(--text-dim);
  font-style: italic;
}

.dol-area-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 1rem;
}

.dol-subtopics h4, .dol-mapped-lectures h4 {
  font-size: 0.88rem;
  color: var(--cyan);
  margin-bottom: 0.5rem;
}

.dol-subtopics ul {
  list-style: disc;
  padding-left: 1.5rem;
  margin-bottom: 1rem;
}

.dol-subtopics li {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 0.3rem;
  line-height: 1.6;
}

.mapped-lectures-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.mapped-lecture-card {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.4rem 0.8rem;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: all 0.2s;
  text-decoration: none;
}

.mapped-lecture-card:hover {
  border-color: var(--cyan);
  text-decoration: none;
}

.mapped-badge {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--cyan);
}

.mapped-title {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* DOL Principles */
.dol-principles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 1rem;
}

.dol-principle-block {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 1.2rem;
  border: 1px solid var(--border);
}

.dol-principle-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.3rem;
}

.dol-principle-icon { font-size: 1.3rem; }

.dol-principle-header h3 {
  font-size: 0.95rem;
  color: #10b981;
  margin: 0;
}

.dol-principle-en {
  font-size: 0.75rem;
  color: var(--text-dim);
  font-style: italic;
  display: block;
  margin-bottom: 0.5rem;
}

.dol-principle-block p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 0.6rem;
}

.dol-principle-lectures {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
}

.mapped-lecture-mini {
  font-size: 0.72rem;
  padding: 0.15rem 0.5rem;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-dim);
  text-decoration: none;
  transition: all 0.2s;
}

.mapped-lecture-mini:hover {
  border-color: var(--cyan);
  color: var(--cyan);
  text-decoration: none;
}

/* Coverage Matrix */
.matrix-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.matrix-table-wrapper {
  overflow-x: auto;
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.coverage-matrix {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}

.coverage-matrix th {
  background: var(--bg-card);
  padding: 0.6rem 0.8rem;
  text-align: center;
  border-bottom: 2px solid var(--border-glow);
  white-space: nowrap;
}

.coverage-matrix th small {
  display: block;
  font-size: 0.7rem;
  color: var(--text-dim);
  font-weight: normal;
}

.coverage-matrix td {
  padding: 0.5rem 0.8rem;
  text-align: center;
  border-bottom: 1px solid var(--border);
}

.coverage-matrix td:first-child {
  text-align: left;
  white-space: nowrap;
}

.matrix-cell { vertical-align: middle; }

.matrix-dot {
  display: inline-block;
  width: 28px;
  height: 28px;
  line-height: 28px;
  border-radius: 50%;
  font-size: 0.75rem;
  font-weight: 700;
  font-family: var(--font-mono);
}

.matrix-dot.filled {
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.2), rgba(239, 68, 68, 0.15));
  color: #f59e0b;
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.matrix-dot.empty {
  color: var(--text-dim);
  opacity: 0.3;
}

/* === News Page === */
.news-page { padding: 2rem 0 3rem; max-width: 900px; margin: 0 auto; }

.news-hero { text-align: center; margin-bottom: 2.5rem; }

.news-hero h1 {
  font-size: 2.2rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--cyan), var(--teal));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 0.5rem;
}

.news-hero-sub { color: var(--text-muted); font-size: 0.95rem; }

.news-list { display: flex; flex-direction: column; gap: 1.2rem; }

.news-card {
  display: flex;
  background: var(--bg-card);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: all 0.2s;
  text-decoration: none;
}

.news-card:hover {
  transform: translateY(-2px);
  border-color: var(--border-glow);
  box-shadow: 0 8px 32px rgba(6, 182, 212, 0.1);
  text-decoration: none;
}

.news-card-image {
  width: 200px;
  min-height: 140px;
  overflow: hidden;
  flex-shrink: 0;
  background: linear-gradient(135deg, var(--bg-primary), var(--bg-card));
}

.news-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.9;
  transition: transform 0.3s;
}

.news-card:hover .news-card-image img { transform: scale(1.05); }

.news-card-body { padding: 1rem 1.2rem; flex: 1; }

.news-card-meta {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  margin-bottom: 0.5rem;
}

.news-card-meta time {
  font-size: 0.78rem;
  color: var(--text-dim);
  font-family: var(--font-mono);
}

.news-card-source {
  font-size: 0.72rem;
  background: var(--cyan-dim);
  color: var(--cyan);
  padding: 0.1rem 0.5rem;
  border-radius: 10px;
}

.news-card-body h3 {
  font-size: 1rem;
  color: var(--text);
  margin-bottom: 0.4rem;
  line-height: 1.4;
}

.news-card-body p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-card-lectures {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
  margin-top: 0.6rem;
}

.news-lecture-tag {
  font-size: 0.7rem;
  padding: 0.1rem 0.5rem;
  background: var(--purple-dim);
  color: var(--purple);
  border-radius: 8px;
  font-family: var(--font-mono);
  font-weight: 600;
}

.news-empty {
  text-align: center;
  padding: 4rem 1rem;
  color: var(--text-dim);
}

/* === News Detail === */
.news-detail { padding: 2rem 0 3rem; max-width: 800px; margin: 0 auto; }

.news-header { margin-bottom: 2rem; }

.news-date {
  font-size: 0.82rem;
  color: var(--text-dim);
  font-family: var(--font-mono);
  margin-right: 0.8rem;
}

.news-source {
  font-size: 0.78rem;
  background: var(--cyan-dim);
  color: var(--cyan);
  padding: 0.2rem 0.6rem;
  border-radius: 10px;
}

.news-header h1 {
  font-size: 1.6rem;
  color: var(--text);
  margin: 0.8rem 0 0.5rem;
  line-height: 1.4;
}

.news-summary {
  color: var(--text-muted);
  font-size: 1rem;
  font-style: italic;
  margin-top: 0.3rem;
  line-height: 1.7;
}

.news-hero-image {
  margin: 1.5rem 0 2rem;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
}

.news-hero-image img { width: 100%; height: auto; display: block; }

.related-lectures {
  margin: 2.5rem 0;
  padding: 1.2rem 1.5rem;
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 1px solid var(--border-glow);
}

.related-lectures h3 {
  font-size: 1rem;
  color: var(--cyan);
  margin-bottom: 0.8rem;
}

.related-grid { display: flex; flex-wrap: wrap; gap: 0.5rem; }

.related-card {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: all 0.2s;
  text-decoration: none;
}

.related-card:hover { border-color: var(--cyan); text-decoration: none; }

.related-badge {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--cyan);
}

.related-title { font-size: 0.85rem; color: var(--text-muted); }

.news-source-link {
  margin-top: 2rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}

.news-source-link a { color: var(--cyan); font-weight: 600; }

/* === iPAS Supplement === */
.ipas-index {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

.ipas-index h1 {
  font-size: 1.8rem;
  color: var(--cyan);
  margin-bottom: 0.5rem;
}

.ipas-module-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 1.2rem;
  margin: 2rem 0;
}

.ipas-module-card {
  display: block;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all 0.25s;
  text-decoration: none;
  color: inherit;
}

.ipas-module-card:hover {
  border-color: var(--border-glow);
  box-shadow: 0 0 30px rgba(6, 182, 212, 0.08);
  transform: translateY(-2px);
}

.ipas-module-cover {
  position: relative;
  height: 180px;
  overflow: hidden;
  background: var(--bg-primary);
}

.ipas-module-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.9;
}

.ipas-module-icon {
  position: absolute;
  top: 0.8rem;
  right: 0.8rem;
  font-size: 2rem;
  filter: drop-shadow(0 2px 8px rgba(0,0,0,0.5));
}

.ipas-module-info {
  padding: 1rem 1.2rem;
}

.ipas-module-info h3 {
  font-size: 1.05rem;
  color: var(--cyan);
  margin-bottom: 0.4rem;
}

.ipas-module-info p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 0.6rem;
}

.ipas-module-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.3rem;
}

.ipas-module-related {
  font-size: 0.7rem;
  color: var(--text-dim);
  margin-right: 0.2rem;
}

.ipas-card-related {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
}

.ipas-usage {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin-top: 2rem;
}

.ipas-usage h3 {
  color: var(--cyan);
  margin-bottom: 0.8rem;
}

.ipas-usage li {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
  margin-left: 1.2rem;
}

/* iPAS Detail Page */
.ipas-detail {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

.ipas-header .back-link {
  display: inline-block;
  margin-bottom: 1rem;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.ipas-header .back-link:hover { color: var(--cyan); }

.ipas-header .ipas-badge {
  display: inline-block;
  background: var(--purple-dim);
  color: var(--purple);
  font-size: 0.75rem;
  font-family: var(--font-mono);
  padding: 0.2rem 0.6rem;
  border-radius: 10px;
  margin-bottom: 0.8rem;
}

.ipas-header h1 {
  font-size: 1.6rem;
  color: var(--cyan);
  margin-bottom: 0.3rem;
}

.ipas-topics-nav {
  display: flex;
  gap: 0.5rem;
  margin: 1.5rem 0;
  flex-wrap: wrap;
}

.ipas-topic-link {
  padding: 0.4rem 1rem;
  border-radius: 20px;
  font-size: 0.85rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-muted);
  transition: all 0.2s;
}

.ipas-topic-link:hover {
  border-color: var(--cyan);
  color: var(--cyan);
}

.ipas-topic-link.active {
  background: var(--cyan-dim);
  border-color: var(--cyan);
  color: var(--cyan);
}

.ipas-related {
  background: var(--bg-card);
  border-radius: var(--radius-sm);
  padding: 0.8rem 1rem;
  margin-bottom: 1.5rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
}

.ipas-related-label {
  font-size: 0.8rem;
  color: var(--text-dim);
}

.ipas-related-link {
  font-size: 0.8rem;
  background: var(--purple-dim);
  padding: 0.15rem 0.5rem;
  border-radius: 10px;
  color: var(--purple);
}

.ipas-content details {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 1rem;
  margin: 0.5rem 0 1rem;
}

.ipas-content summary {
  cursor: pointer;
  color: var(--cyan);
  font-weight: 600;
  font-size: 0.9rem;
}

.ipas-content details[open] summary {
  margin-bottom: 0.8rem;
}

@media (max-width: 768px) {
  .ipas-module-grid { grid-template-columns: 1fr; }
  .ipas-module-cover { height: 140px; }
  .ipas-topics-nav { gap: 0.3rem; }
  .ipas-topic-link { padding: 0.3rem 0.7rem; font-size: 0.8rem; }
}

/* === Footer === */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 2rem 0;
  text-align: center;
  color: var(--text-dim);
  font-size: 0.85rem;
  margin-top: 3rem;
}

.footer-org { margin-top: 0.3rem; }
.footer-org a { color: var(--cyan); }

/* === Responsive === */
@media (max-width: 768px) {
  .modules-grid { grid-template-columns: 1fr; }
  .dol-areas-grid { grid-template-columns: 1fr; }
  .lectures-grid { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }
  .lecture-detail { padding: 1rem 0 2rem; }
  .lecture-header h1 { font-size: 1.3rem; }
  .lecture-nav { flex-direction: column; }
  .nav-prev, .nav-next { max-width: 100%; }
  .filter-bar { gap: 0.3rem; }
  .filter-btn { padding: 0.3rem 0.7rem; font-size: 0.78rem; }
  .cornell-body { grid-template-columns: 1fr; }
  .cornell-cue { border-right: none; border-bottom: 1px solid var(--border-glow); display: flex; flex-wrap: wrap; gap: 0.4rem; }
  .cornell-cue-item { margin-bottom: 0; }
  .comparison-grid { grid-template-columns: 1fr; }
  .dol-principles-grid { grid-template-columns: 1fr; }
  .dol-hero h1 { font-size: 1.6rem; }
  .track-toggle { max-width: 100%; margin: 1rem 0.5rem 0; }
  .track-btn { font-size: 0.82rem; padding: 0.5rem 0.8rem; }
  .news-card { flex-direction: column; }
  .news-card-image { width: 100%; height: 160px; min-height: auto; }
  .news-hero h1 { font-size: 1.6rem; }
  .news-header h1 { font-size: 1.3rem; }
}

@media (max-width: 480px) {
  .hero { padding: 2.5rem 0.5rem 1.5rem; }
  .hero-title { font-size: 2rem; }
  .hero-tagline { font-size: 0.8rem; }
  .hero-banner { padding: 1.5rem 1.2rem 1.3rem; }
  .card-image { height: 120px; }
  .module-cover { height: 120px; }
}

/* === Podcast Player === */
.podcast-section { margin: 2rem 0; }
.podcast-section h2 { font-size: 1.2rem; color: var(--cyan); margin-bottom: 0.8rem; border-bottom: 1px solid var(--cyan-dim); padding-bottom: 0.3rem; }
.player-controls { display: flex; align-items: center; gap: 0.8rem; background: var(--bg-card); padding: 0.8rem 1rem; border-radius: 12px; border: 1px solid var(--cyan-dim); }
.play-btn { background: var(--cyan); color: var(--bg-deep); border: none; width: 44px; height: 44px; border-radius: 50%; cursor: pointer; display: flex; align-items: center; justify-content: center; flex-shrink: 0; transition: background 0.2s; }
.play-btn:hover { background: var(--teal); }
.progress-container { flex: 1; }
.player-progress { background: var(--bg-deep); border-radius: 4px; height: 6px; cursor: pointer; position: relative; }
.player-progress-fill { background: linear-gradient(90deg, var(--cyan), var(--teal)); height: 100%; border-radius: 4px; width: 0; transition: width 0.1s linear; }
.time-display { font-size: 0.8rem; color: var(--text-muted); margin-top: 0.3rem; }
.speed-select { background: var(--bg-deep); color: var(--text-muted); border: 1px solid var(--cyan-dim); border-radius: 6px; padding: 0.3rem 0.5rem; font-size: 0.8rem; cursor: pointer; }
.speed-select:focus { outline: 1px solid var(--cyan); }