:root {
  /* === Bootstrap Semantic Mapping === */
  --bs-primary: var(--color-indigo-500);
  --bs-primary-hover: var(--color-indigo-600);
  --bs-secondary: var(--color-pink-500);
  --bs-secondary-hover: var(--color-pink-600);
  --bs-success: var(--color-green-500);
  --bs-danger: var(--color-red-500);
  --bs-warning: var(--color-yellow-500);
  --bs-info: var(--color-purple-500);
  --bs-light: var(--color-gray-100);
  --bs-dark: var(--color-gray-900);

  /* === Semantic Aliases === */
  --color-bg-surface: var(--color-gray-50);
  --color-bg-elevated: var(--color-white);
  --color-text-heading: var(--color-gray-900);
  --color-text-body: var(--color-gray-700);
  --color-text-muted: var(--color-gray-500);
  --color-border-default: var(--color-gray-200);

  /* === White & Black === */
  --color-white: #ffffff;
  --color-black: #000000;
  --color-white-80: rgba(255, 255, 255, 0.8);
  --color-black-10: rgba(0, 0, 0, 0.1);

  /* === Gray === */
  --color-gray-50:  #f9fafb;
  --color-gray-100: #f3f4f6;
  --color-gray-200: #e5e7eb;
  --color-gray-300: #d1d5db;
  --color-gray-400: #9ca3af;
  --color-gray-500: #6b7280;
  --color-gray-600: #4b5563;
  --color-gray-700: #374151;
  --color-gray-800: #1f2937;
  --color-gray-900: #111827;

  /* === Indigo === */
  --color-indigo-100: #e0e7ff;
  --color-indigo-200: #c7d2fe;
  --color-indigo-300: #a5b4fc;
  --color-indigo-400: #818cf8;
  --color-indigo-500: #6366f1;
  --color-indigo-600: #4f46e5;
  --color-indigo-700: #4338ca;
  --color-indigo-transparent: rgba(99, 102, 241, 0);

  /* === Pink === */
  --color-pink-100: #fce7f3;
  --color-pink-200: #fbcfe8;
  --color-pink-300: #f9a8d4;
  --color-pink-400: #f472b6;
  --color-pink-500: #ec4899;
  --color-pink-600: #db2777;
  --color-pink-700: #be185d;
  --color-pink-transparent: rgba(236, 72, 153, 0);

  /* === Blue === */
  --color-blue-100: #dbeafe;
  --color-blue-200: #bfdbfe;
  --color-blue-300: #93c5fd;
  --color-blue-400: #60a5fa;
  --color-blue-500: #3b82f6;
  --color-blue-600: #2563eb;
  --color-blue-700: #1d4ed8;
  --color-blue-transparent: rgba(59, 130, 246, 0);

  /* === Green === */
  --color-green-100: #dcfce7;
  --color-green-200: #bbf7d0;
  --color-green-300: #86efac;
  --color-green-400: #4ade80;
  --color-green-500: #22c55e;
  --color-green-600: #16a34a;
  --color-green-700: #15803d;
  --color-green-transparent: rgba(34, 197, 94, 0);

  /* === Yellow === */
  --color-yellow-100: #fef9c3;
  --color-yellow-200: #fef08a;
  --color-yellow-300: #fde047;
  --color-yellow-400: #facc15;
  --color-yellow-500: #eab308;
  --color-yellow-600: #ca8a04;
  --color-yellow-700: #a16207;
  --color-yellow-transparent: rgba(234, 179, 8, 0);

  /* === Purple === */
  --color-purple-100: #f3e8ff;
  --color-purple-200: #e9d5ff;
  --color-purple-300: #d8b4fe;
  --color-purple-400: #c084fc;
  --color-purple-500: #a855f7;
  --color-purple-600: #9333ea;
  --color-purple-700: #7e22ce;
  --color-purple-transparent: rgba(168, 85, 247, 0);

  /* === Red === */
  --color-red-100: #fee2e2;
  --color-red-200: #fecaca;
  --color-red-300: #fca5a5;
  --color-red-400: #f87171;
  --color-red-500: #ef4444;
  --color-red-600: #dc2626;
  --color-red-700: #b91c1c;
  --color-red-transparent: rgba(239, 68, 68, 0);

  /* === Teal === */
  --color-teal-100: #ccfbf1;
  --color-teal-200: #99f6e4;
  --color-teal-300: #5eead4;
  --color-teal-400: #2dd4bf;
  --color-teal-500: #14b8a6;
  --color-teal-600: #0d9488;
  --color-teal-700: #0f766e;
  --color-teal-transparent: rgba(20, 184, 166, 0);

  /* === Orange === */
  --color-orange-100: #ffedd5;
  --color-orange-200: #fed7aa;
  --color-orange-300: #fdba74;
  --color-orange-400: #fb923c;
  --color-orange-500: #f97316;
  --color-orange-600: #ea580c;
  --color-orange-700: #c2410c;
  --color-orange-transparent: rgba(249, 115, 22, 0);
}


body {
  font-family: ui-sans-serif, system-ui, sans-serif;
  line-height: 1.5;
  font-weight: 400;
  color: var(--bs-dark);
}

.btn {
  font-weight: 700;
  border-radius: .8rem;
  padding: 0.75rem 1.5rem;
  font-family: ui-sans-serif, system-ui, sans-serif;
  line-height: 1.5;
  border: none;
  cursor: pointer;
  transition: background-color 0.3s ease;
}

.btn-group .btn {
  border-radius: 0.5rem;
  padding: 0.5rem 0.75rem;
  font-size: 1.1rem;
}


/* === PRIMARY THEME (Indigo 500) === */
.bg-primary {
  background-color: var(--bs-primary) !important;
}
.bg-primary-pale {
  background-color: var(--color-indigo-200) !important;
}
.text-primary {
  color: var(--bs-primary) !important;
}
.border-primary {
  border-color: var(--bs-primary) !important;
}

.btn.btn-primary {background-color:var(--bs-primary) !important;
  border-color: var(--bs-primary) !important;
  color: var(--ink) !important;   /* was #fff — 白字落珊瑚 2.78:1（2026-08-04）*/
  transition: background-color 0.3s ease, box-shadow 0.3s ease;
}
.btn.btn-primary:hover:not(.disabled),
.btn.btn-primary:focus:not(.disabled) {
  background-color: var(--bs-primary-hover) !important;
  border-color: var(--bs-primary-hover) !important;
  box-shadow: 0 0.5rem 1rem rgba(99, 102, 241, 0.3) !important;
}
.btn.btn-primary:active:not(.disabled) {
  background-color: #4338ca !important;
  border-color: #4338ca !important;
}

.btn.btn-outline-primary {
  background-color: transparent !important;
  border: 2px solid var(--bs-primary) !important;
  color: var(--bs-primary) !important;
  transition: all 0.3s ease;
}
.btn.btn-outline-primary:hover:not(.disabled),
.btn.btn-outline-primary:focus:not(.disabled) {background-color:var(--bs-primary) !important;
  color: var(--ink) !important;   /* was #fff — 白字落珊瑚 2.78:1（2026-08-04）*/
  box-shadow: 0 0.5rem 1rem rgba(99, 102, 241, 0.2) !important;
}
.btn.btn-outline-primary:active:not(.disabled) {
  background-color: var(--bs-primary-hover) !important;
  border-color: var(--bs-primary-hover) !important;
}

/* === SECONDARY THEME (Pink 500) === */
.bg-secondary {
  background-color: var(--color-pink-500) !important;
}
.bg-secondary-pale {
  background-color: var(--color-pink-200) !important;
}
.text-secondary {
  color: var(--color-pink-500) !important;
}
.border-secondary {
  border-color: var(--color-pink-500) !important;
}

.btn.btn-secondary {background-color:var(--color-pink-500) !important;
  border-color: var(--color-pink-500) !important;
  color: var(--ink) !important;   /* was #fff — 白字落珊瑚 2.78:1（2026-08-04）*/
  transition: background-color 0.3s ease, box-shadow 0.3s ease;
}
.btn.btn-secondary:hover:not(.disabled),
.btn.btn-secondary:focus:not(.disabled) {
  background-color: var(--color-pink-600) !important;
  border-color: var(--color-pink-600) !important;
  box-shadow: 0 0.5rem 1rem rgba(236, 72, 153, 0.3) !important;
}
.btn.btn-secondary:active:not(.disabled) {
  background-color: #be185d !important;
  border-color: #be185d !important;
}

.btn.btn-outline-secondary {
  background-color: transparent !important;
  border: 2px solid var(--color-pink-500) !important;
  color: var(--color-pink-500) !important;
  transition: all 0.3s ease;
}
.btn.btn-outline-secondary:hover:not(.disabled),
.btn.btn-outline-secondary:focus:not(.disabled) {background-color:var(--color-pink-500) !important;
  color: var(--ink) !important;   /* was --bs-light（cream）落珊瑚 2.39:1，2026-08-04 */
  box-shadow: 0 0.5rem 1rem rgba(236, 72, 153, 0.2) !important;
}
.btn.btn-outline-secondary:active:not(.disabled) {
  background-color: var(--color-pink-600) !important;
  border-color: var(--color-pink-600) !important;
}

/* === SUCCESS THEME (Green 500) === */
.bg-success {
  background-color: var(--color-green-500) !important;
}
.bg-success-pale {
  background-color: var(--color-green-200) !important;
}
.text-success {
  color: var(--color-green-500) !important;
}
.border-success {
  border-color: var(--color-green-500) !important;
}

.btn.btn-success {
  background-color: var(--color-green-500) !important;
  border-color: var(--color-green-500) !important;color:var(--ink) !important;
  transition: background-color 0.3s ease, box-shadow 0.3s ease;
}
.btn.btn-success:hover:not(.disabled),
.btn.btn-success:focus:not(.disabled) {
  background-color: var(--color-green-600) !important;
  border-color: var(--color-green-600) !important;
  box-shadow: 0 0.5rem 1rem rgba(34, 197, 94, 0.3) !important;
}
.btn.btn-success:active:not(.disabled) {
  background-color: var(--color-green-700) !important;
  border-color: var(--color-green-700) !important;
}

.btn.btn-outline-success {
  background-color: transparent !important;
  border: 2px solid var(--color-green-500) !important;
  color: var(--color-green-500) !important;
  transition: all 0.3s ease;
}
.btn.btn-outline-success:hover:not(.disabled),
.btn.btn-outline-success:focus:not(.disabled) {
  background-color: var(--color-green-500) !important;color:var(--ink) !important;
  box-shadow: 0 0.5rem 1rem rgba(34, 197, 94, 0.2) !important;
}
.btn.btn-outline-success:active:not(.disabled) {
  background-color: var(--color-green-600) !important;
  border-color: var(--color-green-600) !important;
}

/* === DANGER THEME (Red 500) === */
.bg-danger {
  background-color: var(--color-red-500) !important;
}
.bg-danger-pale {
  background-color: var(--color-red-200) !important;
}
.text-danger {
  color: var(--color-red-500) !important;
}
.border-danger {
  border-color: var(--color-red-500) !important;
}

.btn.btn-danger {background-color:var(--error-deep) !important;
  border-color: var(--color-red-500) !important;
  color: #fff !important;   /* 白字保留，底色改用 --error-deep（2026-08-04）*/
  transition: background-color 0.3s ease, box-shadow 0.3s ease;
}
.btn.btn-danger:hover:not(.disabled),
.btn.btn-danger:focus:not(.disabled) {
  background-color: var(--color-red-600) !important;
  border-color: var(--color-red-600) !important;
  box-shadow: 0 0.5rem 1rem rgba(239, 68, 68, 0.3) !important;
}
.btn.btn-danger:active:not(.disabled) {
  background-color: var(--color-red-700) !important;
  border-color: var(--color-red-700) !important;
}

.btn.btn-outline-danger {
  background-color: transparent !important;
  border: 2px solid var(--color-red-500) !important;
  color: var(--color-red-500) !important;
  transition: all 0.3s ease;
}
.btn.btn-outline-danger:hover:not(.disabled),
.btn.btn-outline-danger:focus:not(.disabled) {background-color:var(--error-deep) !important;
  color: #fff !important;   /* was --bs-light（cream）落紅底 3.29:1，2026-08-04 */
  box-shadow: 0 0.5rem 1rem rgba(239, 68, 68, 0.2) !important;
}
.btn.btn-outline-danger:active:not(.disabled) {
  background-color: var(--color-red-600) !important;
  border-color: var(--color-red-600) !important;
}

/* === TEXT WHITE === */
.text-white {
  color: var(--bs-light) !important;
  transition: color 0.3s ease;
}
.text-white:hover,
.text-white:focus {
  color: var(--bs-light) !important;
}

/* === TEXT MUTED === */
.text-muted {
  color: var(--color-gray-500) !important;
  transition: color 0.3s ease;
}
.text-muted:hover,
.text-muted:focus {
  color: var(--color-gray-500) !important;
}

/* === TEXT DARK === */
.text-dark {
  color: var(--bs-dark) !important;
  transition: color 0.3s ease;
}
.text-dark:hover,
.text-dark:focus {
  color: var(--bs-dark) !important;
}

/* Z-Index */
.z-index-10 {
  position: relative;
  z-index: 10;
}


/* 音素目錄 */
#groupList {
  display: flex;
  flex-wrap: wrap;
}

/* 預設樣式 */
.phonics-card {
  transition: 
    transform 0.4s ease,
    box-shadow 0.4s ease,
    border-color 0.4s ease,
    background-color 0.4s ease;
  will-change: transform, box-shadow;
  border-radius: 1rem;
  border-style: solid !important;
}

/* 主題色樣式 */
.theme-pink    { border-color: var(--color-pink-600) !important; }
.theme-blue    { border-color: var(--color-blue-600) !important; }
.theme-green   { border-color: var(--color-green-600) !important; }
.theme-indigo  { border-color: var(--color-indigo-600) !important; }
.theme-orange  { border-color: var(--color-orange-600) !important; }
.theme-teal    { border-color: var(--color-teal-600) !important; }
.theme-purple  { border-color: var(--color-purple-600) !important; }
.theme-yellow  { border-color: var(--color-yellow-600) !important; }
.theme-red     { border-color: var(--color-red-600) !important; }


.phonics-card:hover {
  transform: scale(1.05);
  box-shadow: 0 1rem 2rem rgba(0, 0, 0, 0.1); /* 預設陰影，避免固定為粉紅色 */
  background-color: var(--bs-light);
  transition: transform 0.4s ease, box-shadow 0.4s ease, border-color 0.4s ease, background-color 0.4s ease;
}

.theme-pink:hover    { border-color: var(--color-pink-600); box-shadow: 0 1rem 2rem rgba(236, 72, 153, 0.2); }
.theme-blue:hover    { border-color: var(--color-blue-600); box-shadow: 0 1rem 2rem rgba(59, 130, 246, 0.2); }
.theme-green:hover   { border-color: var(--color-green-600); box-shadow: 0 1rem 2rem rgba(34, 197, 94, 0.2); }
.theme-indigo:hover  { border-color: var(--color-indigo-600); box-shadow: 0 1rem 2rem rgba(99, 102, 241, 0.2); }
.theme-orange:hover  { border-color: var(--color-orange-600); box-shadow: 0 1rem 2rem rgba(249, 115, 22, 0.2); }
.theme-teal:hover    { border-color: var(--color-teal-600); box-shadow: 0 1rem 2rem rgba(20, 184, 166, 0.2); }
.theme-purple:hover  { border-color: var(--color-purple-600); box-shadow: 0 1rem 2rem rgba(168, 85, 247, 0.2); }
.theme-yellow:hover  { border-color: var(--color-yellow-600); box-shadow: 0 1rem 2rem rgba(234, 179, 8, 0.2); }
.theme-red:hover     { border-color: var(--color-red-600); box-shadow: 0 1rem 2rem rgba(239, 68, 68, 0.2); }



#startAdventureBtn {
  background: linear-gradient(to right, #6366f1, #8b5cf6); /* indigo to purple */
  transition: transform 0.2s ease, background 0.3s ease;
}

#startAdventureBtn:hover {
  background: linear-gradient(to right, #4f46e5, #7c3aed); /* darker on hover */
  transform: scale(1.05);
}

/* 音素詳情頁面 */
.section{
  border-radius: 1.6rem;
}

.card{
  border-radius: .8rem;
  box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.1);
}

/* 音素發音練習 */
.wave-background {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  justify-content: space-around;
  align-items: center;
  pointer-events: none;
  opacity: 0;
  z-index: 0;
  transition: opacity 0.3s ease;
}

.wave-background.active {
  opacity: 1;
  transition: opacity 0.3s ease-in-out;
}

.wave-bar-bg {
  width: 0.6rem;
  height: 40%;
  border-radius: 0.25rem;
  background-color: currentColor;
  animation: wave 1.2s ease-in-out infinite;
  opacity: 0.15;
  filter: blur(4px);
  box-shadow: 0 0 1.5rem currentColor;
}

.wave-bar-bg:nth-child(2) { animation-delay: 0.1s; }
.wave-bar-bg:nth-child(3) { animation-delay: 0.2s; }
.wave-bar-bg:nth-child(4) { animation-delay: 0.3s; }
.wave-bar-bg:nth-child(5) { animation-delay: 0.4s; }

@keyframes wave {
  0%, 100% { transform: scaleY(0.3); }
  50% { transform: scaleY(1); }
}

.card > *:not(.wave-background) {
  position: relative;
  z-index: 1;
}

.recording-pulse {
  animation: pulse-red 1s infinite;
}

@keyframes pulse-red {
  0% { box-shadow: 0 0 0 0 rgba(220, 53, 69, 0.6); }
  70% { box-shadow: 0 0 0 10px rgba(220, 53, 69, 0); }
  100% { box-shadow: 0 0 0 0 rgba(220, 53, 69, 0); }
}

.recording-dot {
  font-size: 0.95rem;
  animation: blink 1s infinite;
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.recording-timer {
  font-size: 0.95rem;
  font-weight: bold;
  color: var(--color-red-600);
  animation: blink 1s infinite;
}




/* 音素圖片 */
.phonics-image{
    max-height: 100%;
    max-width: 100%;
}
.card-img-left {
  width: 40%;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

/* 配對成功 */
@keyframes successPulse {
  0% {
    transform: scale(1);
    box-shadow: 0 0 0.5rem 0.2rem var(--color-green-transparent);
    background-color: var(--color-green-100);
  }
  50% {
    transform: scale(1.1);
    box-shadow: 0 0 1.5rem 0.6rem var(--color-green-400);
    background-color: var(--color-green-200);
  }
  100% {
    transform: scale(1);
    box-shadow: 0 0 0.5rem 0.2rem var(--color-green-transparent);
    background-color: var(--color-green-100);
  }
}

.success-celebrate {
  animation: successPulse 0.6s ease;
  background-color: var(--color-green-100) !important;
  color: var(--color-green-700) !important;
  border: 2px solid var(--color-green-500);
  border-radius: 0.5rem;
  transition: all 0.3s ease;
}

/* 配對失敗 */
.letter-card.border-danger.danger-pulse-shake {
  border: 3px solid rgba(220, 53, 69, 1);
  color: #dc3545;
  transition: background-color 0.3s ease; /* Only transition non-animated props */
}

@keyframes dangerPulseShake {
  0% {
    transform: scale(1.05) translateX(0);
    box-shadow: 0 0 0.5rem 0.2rem rgba(220, 53, 69, 0.5);
    background-color: rgba(220, 53, 69, 0.1);
  }
  15% {
    transform: scale(1.07) translateX(-3px);
  }
  30% {
    transform: scale(1.1) translateX(3px);
  }
  45% {
    transform: scale(1.12) translateX(-2px);
  }
  60% {
    transform: scale(1.13) translateX(2px);
    box-shadow: 0 0 1.5rem 0.6rem rgba(220, 53, 69, 0.8);
    background-color: rgba(220, 53, 69, 0.2);
  }
  75% {
    transform: scale(1.1) translateX(-1px);
  }
  90% {
    transform: scale(1.07) translateX(1px);
  }
  100% {
    transform: scale(1.05) translateX(0);
    box-shadow: 0 0 0.5rem 0.2rem rgba(220, 53, 69, 0.5);
    background-color: rgba(220, 53, 69, 0.1);
  }
}

.danger-pulse-shake {
  animation: dangerPulseShake 0.6s ease-in-out;
}




/* 拼字發音練習區 */

.letter-choice {
  height: 4rem;
  font-size: 3rem;
  line-height: 1;
  border-radius: .8rem;
}

.letter-card {
  width: 5rem;
  height: 5rem;
  font-size: 3rem;
  line-height: 1;
  background: linear-gradient(to bottom right, var(--color-pink-400), var(--color-pink-600));
  border-radius: .8rem;
}

.letter-card:active {
  transform: scale(0.95);
  box-shadow: 0 0 0.5rem rgba(0, 0, 0, 0.2) inset;
}

.letter-card.clicked {
  animation: pop 0.3s ease;
  box-shadow: 0 0 0.75rem var(--bs-primary);
}

@keyframes pop {
  0% {
    transform: scale(1);
    box-shadow: 0 0 0 rgba(0, 0, 0, 0);
  }
  50% {
    transform: scale(1.15);
    box-shadow: 0 0 1rem rgba(0, 123, 255, 0.5);
  }
  100% {
    transform: scale(1);
    box-shadow: 0 0 0 rgba(0, 0, 0, 0);
  }
}

.drop-placeholder {
  width: 3rem;
  height: 3.5rem;
  margin: 0.5rem;
  border: 2px dashed var(--color-indigo-400);
  border-radius: 0.5rem;
  background-color: rgba(99, 102, 241, 0.05);
}
/* ===== ShariEnglish 版面修正 v1.0（2026-07-28）=====
   問題：音素卡用 col-md-{12/count}，5個音素 = col-md-2（約15%闊），
   長音素（a_e）+ 長IPA（/juː/ 或 /uː/）撐爆格、卡片高度唔一致。
   做法：改用 auto-fit grid，卡片自己搵闊度，唔夠位就換行。 */
.se-phonics-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(190px,1fr));
  gap:1.5rem;
  align-items:stretch;
}
.se-phonics-cell{display:flex}
.se-phonics-cell > .card{width:100%}

.se-face{
  display:flex;
  flex-direction:column;      /* 由橫排改直排，長IPA唔會迫爆 */
  align-items:center;
  justify-content:center;
  gap:.25rem;
  min-height:6.2rem;          /* 統一高度，卡片對齊 */
  text-align:center;
  width:100%;
}
.se-face__letter{
  line-height:1.05;
  max-width:100%;
  overflow-wrap:anywhere;     /* 極長音素都唔會撐爆 */
}
.se-face__ipa{
  font-size:1.15rem;
  line-height:1.35;
  max-width:100%;
  overflow-wrap:anywhere;
}

/* 拼字鍵盤：音素多咗（68→70）要收細啲，iPad 直向先啱睇 */
.letter-tile,.spelling-letter,#letterBank button{max-width:100%}

@media (max-width:575.98px){
  .se-phonics-grid{grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:1rem}
  .se-face{min-height:5.2rem}
  .se-face__ipa{font-size:1rem}
}

/* ===== 首頁組別卡：同闊 + 同行等高（2026-07-28）=====
   問題：header 標題有 1 行有 2 行、字母 4rem 固定圓形令 5 個字母換行，
   卡片高度參差，卡底留白。
   做法：header 同 letters 區各自定 min-height，letters 區 flex-grow 撐滿，
   字母由固定圓形改自適應 pill（-tion / -cian 呢啲長標籤先容得落）。 */
.se-gcard__head{
  min-height:8.75rem;
  display:flex; flex-direction:column;
  align-items:center; justify-content:center;
}
.se-gcard__head h3{
  display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical;
  overflow:hidden; line-height:1.3;
}
.se-gcard__letters{
  flex:1 1 auto;
  display:flex; flex-wrap:wrap;
  align-content:center; justify-content:center;
  gap:.6rem;
  padding:1.1rem .9rem;
  min-height:6rem;
}
.se-chip{
  display:inline-flex; align-items:center; justify-content:center;
  min-width:3.4rem; height:3.4rem;
  padding:0 .9rem;
  border-radius:999px;
  font-size:1.25rem; font-weight:700;
  white-space:nowrap;
  transition:background-color .3s ease, transform .2s ease;
}
.se-chip:hover{transform:scale(1.05)}

@media (max-width:575.98px){
  .se-gcard__head{min-height:7.5rem}
  .se-gcard__letters{min-height:5rem;gap:.45rem;padding:.9rem .7rem}
  .se-chip{min-width:2.9rem;height:2.9rem;font-size:1.05rem;padding:0 .7rem}
}

/* 首頁組別卡：卡片必須填滿成個 column。
   原本 col 係 flex container，卡片跟內容闊度 → 同行卡片闊窄不一。 */
#groupList > .col{display:flex}
#groupList > .col > .phonics-card{width:100%;flex:1 1 auto}