/* ==========================================================================
   YUWEN7 · 语恬具身语文 LMS 设计系统 (Calligraphic Oceanic Crisp Light)
   同步真源：DESIGN.md (Stitch projects/9991825386585583558)
   核心哲学：Modern Tactile Minimalism + 浅色水墨清爽主义 + 手机端触控优先
   ========================================================================== */

:root {
  /* 1. 色彩系统 (Colors) */
  --bg-canvas: #f4f7fb;
  --bg-surface: #ffffff;
  --bg-surface-soft: #f8fafc;
  --bg-surface-tint: #f0fdf4;
  --bg-surface-highlight: #f0f9ff;

  --text-primary: #0f172a;
  --text-secondary: #334155;
  --text-muted: #64748b;
  --text-inverse: #ffffff;

  /* 主色：天青海蓝 (Oceanic Sky Blue) */
  --color-primary: #0284c7;
  --color-primary-hover: #0369a1;
  --color-primary-dark: #0369a1;
  --color-primary-light: #e0f2fe;

  /* 次色：竹青松石绿 (Bamboo Emerald Green) */
  --color-success: #047857;
  --color-success-light: #ecfdf5;
  --color-success-dark: #064e3b;

  /* 强调色：赤朱红印 (Seal Vermilion Red) */
  --color-amber: #c2410c;
  --color-amber-light: #fff7ed;
  --color-amber-dark: #9a3412;

  /* 辅助紫：苏轼/词人意境色 */
  --color-purple: #7c3aed;
  --color-purple-light: #f5f3ff;

  /* 结构线条与边框 */
  --border-color: #e2e8f0;
  --border-hover: #cbd5e1;
  --border-focus: #0284c7;

  /* 2. 悬浮与阴影层次 (Elevation) */
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.04);
  --shadow-card: 0 4px 20px -2px rgba(15, 23, 42, 0.04), 0 2px 6px -1px rgba(15, 23, 42, 0.02);
  --shadow-hover: 0 12px 32px -4px rgba(2, 132, 199, 0.12), 0 4px 12px -2px rgba(15, 23, 42, 0.04);
  --shadow-modal: 0 24px 48px -12px rgba(15, 23, 42, 0.14), 0 8px 16px -4px rgba(15, 23, 42, 0.06);

  /* 3. 几何与圆角 (Shapes) */
  --radius-xs: 4px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --radius-pill: 9999px;

  /* 4. 字体排印 */
  --font-main: "Plus Jakarta Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans SC", sans-serif;
  --font-mono: "JetBrains Mono", monospace;
}

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

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

body {
  font-family: var(--font-main);
  background-color: var(--bg-canvas);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* --------------------------------------------------------------------------
   Header & Navigation
   -------------------------------------------------------------------------- */
.app-header {
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
  transition: all 0.2s ease;
}

.header-container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 12px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand-group {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.brand-icon {
  width: 42px;
  height: 42px;
  background: #f0fdf4;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  box-shadow: inset 0 0 0 1px rgba(4, 120, 87, 0.15);
  flex-shrink: 0;
}

.brand-title {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.015em;
  line-height: 1.25;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.brand-subtitle {
  font-size: 0.76rem;
  color: var(--text-muted);
  font-weight: 500;
  line-height: 1.2;
}

.header-telemetry {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.pill-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border-radius: var(--radius-pill);
  font-size: 0.78rem;
  font-weight: 600;
  border: 1px solid var(--border-color);
  background: var(--bg-surface);
  box-shadow: var(--shadow-sm);
  transition: all 0.2s ease;
  white-space: nowrap;
}

.pill-streak {
  background: var(--color-amber-light);
  border-color: rgba(194, 65, 12, 0.25);
  color: var(--color-amber-dark);
}

.pill-engine {
  background: var(--color-success-light);
  border-color: rgba(4, 120, 87, 0.25);
  color: var(--color-success-dark);
}

.pill-level {
  background: var(--color-primary-light);
  border-color: rgba(2, 132, 199, 0.22);
  color: var(--color-primary-hover);
}

.active-dot {
  width: 7px;
  height: 7px;
  background: #10b981;
  border-radius: 50%;
  box-shadow: 0 0 0 2px rgba(16, 185, 129, 0.25);
  animation: pulse-ring 2s infinite;
}

.xp-counter {
  font-family: var(--font-mono);
  background: rgba(2, 132, 199, 0.12);
  padding: 2px 6px;
  border-radius: 6px;
  font-size: 0.72rem;
  font-weight: 700;
}

@keyframes pulse-ring {
  0% { transform: scale(0.95); opacity: 0.8; }
  50% { transform: scale(1.15); opacity: 1; }
  100% { transform: scale(0.95); opacity: 0.8; }
}

/* --------------------------------------------------------------------------
   AI Harness Telemetry Banner
   -------------------------------------------------------------------------- */
.telemetry-banner {
  background: linear-gradient(90deg, #f0fdf4 0%, #fff7ed 100%);
  border-bottom: 1px solid var(--border-color);
  font-size: 0.8rem;
  padding: 8px 20px;
}

.banner-inner {
  max-width: 1240px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.banner-tag {
  font-weight: 800;
  color: var(--color-success);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  flex-shrink: 0;
}

.banner-text {
  color: var(--text-secondary);
  flex: 1;
  font-size: 0.8rem;
}

.banner-meta {
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  flex-shrink: 0;
}

/* --------------------------------------------------------------------------
   Main Layout Container
   -------------------------------------------------------------------------- */
.main-content {
  max-width: 1240px;
  margin: 28px auto;
  padding: 0 24px;
  flex: 1;
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.section-kicker {
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--color-primary);
  text-transform: uppercase;
  display: block;
  margin-bottom: 4px;
}

.section-heading {
  font-size: 1.45rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.section-note {
  font-size: 0.82rem;
  color: var(--text-muted);
}

.section-title-row {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 16px;
  gap: 16px;
  flex-wrap: wrap;
}

/* --------------------------------------------------------------------------
   1. Hero Mission Card (核心名篇朗读任务)
   -------------------------------------------------------------------------- */
.hero-mission {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 28px 32px;
  box-shadow: var(--shadow-card);
  transition: box-shadow 0.25s ease, border-color 0.25s ease;
}

.hero-mission:hover {
  box-shadow: var(--shadow-hover);
  border-color: rgba(2, 132, 199, 0.25);
}

.mission-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--border-color);
}

.mission-title-group {
  flex: 1;
  min-width: 0;
}

.mission-title {
  font-size: 1.55rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.02em;
  margin: 4px 0 8px 0;
  line-height: 1.35;
  word-break: break-word;
}

.mission-concept {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* --------------------------------------------------------------------------
   有声陪伴控制台 (Audio Console)
   -------------------------------------------------------------------------- */
.audio-console {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.voice-picker-wrap {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-pill);
  padding: 0 12px 0 10px;
  height: 42px;
  box-shadow: var(--shadow-sm);
  transition: all 0.2s ease;
  cursor: pointer;
  box-sizing: border-box;
}

.voice-picker-wrap:hover,
.voice-picker-wrap:focus-within {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.12);
}

.voice-picker-icon {
  font-size: 1rem;
  line-height: 1;
  flex-shrink: 0;
}

.voice-picker-select {
  border: none;
  background: transparent;
  color: var(--text-primary);
  font-family: var(--font-main);
  font-size: 0.82rem;
  font-weight: 700;
  cursor: pointer;
  outline: none;
  padding-right: 4px;
}

.voice-picker-select option {
  background: #ffffff;
  color: #0f172a;
  font-weight: 600;
  padding: 8px 10px;
}

.speed-toggle {
  background: var(--bg-canvas);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-pill);
  padding: 3px;
  display: flex;
  gap: 2px;
  height: 42px;
  align-items: center;
  box-sizing: border-box;
}

.speed-btn {
  background: transparent;
  border: none;
  padding: 6px 12px;
  border-radius: var(--radius-pill);
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
  font-family: var(--font-main);
  height: 100%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.speed-btn.active {
  background: var(--bg-surface);
  color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

.btn-play-hero {
  background: var(--color-primary);
  color: var(--text-inverse);
  border: none;
  border-radius: var(--radius-pill);
  padding: 0 24px;
  height: 44px;
  font-size: 0.92rem;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  box-shadow: 0 4px 14px rgba(2, 132, 199, 0.25);
  border-bottom: 3px solid var(--color-primary-dark);
  transition: all 0.15s ease;
  white-space: nowrap;
  font-family: var(--font-main);
  text-decoration: none;
  box-sizing: border-box;
}

.btn-play-hero:hover {
  background: var(--color-primary-hover);
  transform: translateY(-1px);
}

.btn-play-hero:active {
  transform: translateY(2px);
  border-bottom-width: 1px;
}

/* --------------------------------------------------------------------------
   声韵气场对比台 (Contrast Stage)
   -------------------------------------------------------------------------- */
.contrast-stage {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 20px;
  margin-top: 24px;
}

.contrast-card {
  background: var(--bg-surface-soft);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 22px;
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.contrast-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-2px);
}

.contrast-tag {
  display: inline-block;
  align-self: flex-start;
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 700;
}

.tag-present {
  background: var(--color-success-light);
  color: var(--color-success);
}

.tag-past {
  background: #f1f5f9;
  color: var(--text-secondary);
}

.contrast-sentence {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: 0.02em;
}

.stress-word {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-thickness: 3px;
}

.contrast-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

.beat-strip {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
  margin-top: 4px;
}

.beat-chip {
  padding: 4px 9px;
  border-radius: 6px;
  font-size: 0.76rem;
  font-weight: 600;
}

.beat-chip.soft {
  background: #f1f5f9;
  color: var(--text-muted);
}

.beat-chip.strong {
  background: #ecfeff;
  border: 1px solid #a5f3fc;
  color: #0891b2;
  font-weight: 800;
}

.btn-listen-mini {
  align-self: flex-start;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-pill);
  padding: 6px 14px;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-primary);
  cursor: pointer;
  transition: all 0.2s ease;
  font-family: var(--font-main);
}

.btn-listen-mini:hover {
  background: var(--color-primary-light);
  border-color: var(--color-primary);
}

.contrast-vs {
  font-weight: 900;
  font-size: 0.85rem;
  color: var(--color-success);
  background: var(--color-success-light);
  padding: 6px 12px;
  border-radius: var(--radius-pill);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(4, 120, 87, 0.2);
  box-shadow: var(--shadow-sm);
  flex-shrink: 0;
}

/* --------------------------------------------------------------------------
   2. 今日五张精选卡片 (5-Card Deck)
   -------------------------------------------------------------------------- */
.deck-progress {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--text-secondary);
}

.progress-bar-bg {
  width: 130px;
  height: 8px;
  background: var(--border-color);
  border-radius: 9999px;
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary), var(--color-success));
  border-radius: 9999px;
  transition: width 0.4s ease;
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 20px;
}

.deck-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 24px;
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 16px;
  transition: all 0.25s ease;
  position: relative;
}

.deck-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
  border-color: rgba(2, 132, 199, 0.4);
}

.deck-card.completed {
  border-color: rgba(4, 120, 87, 0.4);
  background: linear-gradient(180deg, #ffffff 0%, #f0fdf4 100%);
}

.card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-tag {
  font-size: 0.72rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: var(--radius-pill);
}

.tag-blue { background: var(--color-primary-light); color: var(--color-primary-hover); }
.tag-green { background: var(--color-success-light); color: var(--color-success); }
.tag-indigo { background: var(--color-purple-light); color: var(--color-purple); }
.tag-amber { background: var(--color-amber-light); color: var(--color-amber); }
.tag-gold { background: #fef3c7; color: #b45309; }

.check-toggle {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 2px solid var(--border-color);
  background: transparent;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  color: transparent;
  transition: all 0.2s ease;
}

.deck-card.completed .check-toggle {
  background: var(--color-success);
  border-color: var(--color-success);
  color: #ffffff;
}

.card-title {
  font-size: 1.12rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-top: 4px;
  line-height: 1.4;
}

.card-body {
  font-size: 0.92rem;
  color: var(--text-secondary);
  display: flex;
  flex-direction: column;
  gap: 10px;
  line-height: 1.65;
}

.quote-box {
  background: var(--bg-surface-soft);
  border-left: 3px solid var(--color-primary);
  padding: 10px 14px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
}

.chat-bubble {
  padding: 10px 14px;
  border-radius: var(--radius-md);
  font-size: 0.88rem;
  display: flex;
  gap: 10px;
  align-items: flex-start;
}

.chat-bubble.sophie {
  background: #f1f5f9;
}

.chat-bubble.yutian {
  background: var(--color-primary-light);
  border: 1px solid #bae6fd;
}

.card-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 8px;
  padding-top: 14px;
  border-top: 1px solid var(--border-color);
}

.btn-card-audio {
  background: var(--color-primary-light);
  color: var(--color-primary-hover);
  border: 1px solid rgba(2, 132, 199, 0.2);
  border-radius: var(--radius-pill);
  padding: 8px 16px;
  font-size: 0.82rem;
  font-weight: 700;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all 0.2s ease;
  font-family: var(--font-main);
}

.btn-card-audio:hover {
  background: var(--color-primary);
  color: #ffffff;
}

/* --------------------------------------------------------------------------
   3. 语文素养星系 (Skill Galaxy)
   -------------------------------------------------------------------------- */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 18px;
}

.skill-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 20px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: all 0.2s ease;
}

.skill-card:hover {
  box-shadow: var(--shadow-card);
  transform: translateY(-2px);
  border-color: var(--color-primary);
}

.skill-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.skill-icon {
  font-size: 26px;
}

.skill-level-chip {
  font-size: 0.72rem;
  font-weight: 700;
  background: var(--bg-surface-soft);
  border: 1px solid var(--border-color);
  padding: 2px 8px;
  border-radius: var(--radius-pill);
  color: var(--text-muted);
}

.skill-name {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
}

.skill-desc {
  font-size: 0.78rem;
  color: var(--text-muted);
  line-height: 1.45;
}

.skill-progress-bar {
  height: 6px;
  background: #f1f5f9;
  border-radius: 9999px;
  overflow: hidden;
}

.skill-progress-fill {
  height: 100%;
  background: var(--color-primary);
  border-radius: 9999px;
}

.skill-stats {
  display: flex;
  justify-content: space-between;
  font-size: 0.74rem;
  font-weight: 600;
  color: var(--text-muted);
}

/* --------------------------------------------------------------------------
   Modal & Footer
   -------------------------------------------------------------------------- */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.4);
  backdrop-filter: blur(6px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 200;
  padding: 20px;
}

.modal-backdrop.active {
  display: flex;
}

.modal-card {
  background: var(--bg-surface);
  border-radius: var(--radius-xl);
  padding: 36px 30px;
  max-width: 440px;
  width: 100%;
  text-align: center;
  box-shadow: var(--shadow-modal);
  border: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  animation: modal-pop 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes modal-pop {
  from { opacity: 0; transform: scale(0.9); }
  to { opacity: 1; transform: scale(1); }
}

.modal-trophy {
  font-size: 52px;
  margin-bottom: 2px;
}

.modal-title {
  font-size: 1.45rem;
  font-weight: 800;
}

.modal-desc {
  font-size: 0.92rem;
  color: var(--text-secondary);
}

.reward-pill {
  background: var(--color-amber-light);
  border: 1px solid #fed7aa;
  color: var(--color-amber);
  padding: 6px 16px;
  border-radius: var(--radius-pill);
  font-size: 0.85rem;
  font-weight: 700;
}

.modal-btn {
  background: var(--color-primary);
  color: #ffffff;
  border: none;
  border-radius: var(--radius-pill);
  padding: 12px 28px;
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  margin-top: 10px;
  box-shadow: 0 4px 12px rgba(2, 132, 199, 0.25);
  border-bottom: 3px solid var(--color-primary-dark);
}

.app-footer {
  background: var(--bg-surface);
  border-top: 1px solid var(--border-color);
  padding: 24px 0;
  margin-top: auto;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.footer-container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.footer-left {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.footer-left a {
  color: var(--color-primary);
  text-decoration: none;
  font-weight: 600;
}

/* ==========================================================================
   📱 移动端触控人体工程学适配 (Mobile First)
   ========================================================================== */
@media (max-width: 768px) {
  .header-container {
    padding: 10px 16px;
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
  }

  .brand-group {
    justify-content: flex-start;
  }

  .brand-icon {
    width: 36px;
    height: 36px;
    font-size: 18px;
    border-radius: var(--radius-sm);
  }

  .brand-title {
    font-size: 1.05rem;
  }

  .brand-subtitle {
    font-size: 0.72rem;
  }

  .header-telemetry {
    width: 100%;
    display: flex;
    gap: 6px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    padding-bottom: 2px;
  }

  .header-telemetry::-webkit-scrollbar {
    display: none;
  }

  .pill-badge {
    padding: 4px 10px;
    font-size: 0.72rem;
    flex-shrink: 0;
  }

  .telemetry-banner {
    padding: 6px 16px;
  }

  .banner-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }

  .banner-meta {
    font-size: 0.7rem;
  }

  .main-content {
    margin: 16px auto;
    padding: 0 16px;
    gap: 20px;
  }

  .hero-mission {
    padding: 20px 16px;
    border-radius: var(--radius-lg);
  }

  .mission-header {
    flex-direction: column;
    align-items: stretch;
    gap: 16px;
    padding-bottom: 18px;
  }

  .mission-title {
    font-size: 1.25rem;
    line-height: 1.38;
    margin: 4px 0 6px 0;
  }

  .mission-concept {
    font-size: 0.88rem;
    line-height: 1.5;
  }

  .audio-console {
    width: 100%;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
  }

  .voice-picker-wrap {
    flex: 1 1 50%;
    min-width: 0;
    height: 42px;
    padding: 0 10px;
  }

  .voice-picker-select {
    width: 100%;
    min-width: 0;
    font-size: 0.8rem;
    text-overflow: ellipsis;
    white-space: nowrap;
    overflow: hidden;
  }

  .speed-toggle {
    flex: 0 0 auto;
    height: 42px;
  }

  .speed-btn {
    padding: 4px 11px;
    font-size: 0.76rem;
  }

  .btn-play-hero {
    width: 100%;
    height: 48px;
    justify-content: center;
    font-size: 0.95rem;
    border-radius: var(--radius-pill);
    order: 3;
    margin-top: 2px;
  }

  .contrast-stage {
    grid-template-columns: 1fr;
    gap: 12px;
    margin-top: 18px;
  }

  .contrast-card {
    padding: 16px;
    border-radius: var(--radius-md);
  }

  .contrast-sentence {
    font-size: 1.15rem;
  }

  .contrast-vs {
    margin: 0 auto;
  }

  .btn-listen-mini {
    width: 100%;
    height: 40px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-top: 4px;
  }

  .cards-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .deck-card {
    padding: 18px 16px;
    border-radius: var(--radius-lg);
  }

  .card-title {
    font-size: 1.05rem;
  }

  .btn-card-audio {
    height: 40px;
    padding: 6px 14px;
    font-size: 0.8rem;
  }

  .skills-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .skill-card {
    padding: 16px;
  }

  .footer-container {
    padding: 0 16px;
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }
}

@media (max-width: 480px) {
  .hero-mission {
    padding: 16px 14px;
  }

  .deck-card {
    padding: 16px 14px;
  }

  .chat-bubble {
    padding: 8px 12px;
  }

  .quote-box {
    padding: 8px 12px;
    font-size: 0.9rem;
  }

  .beat-chip {
    padding: 3px 7px;
    font-size: 0.72rem;
  }
}