@import url('https://fonts.googleapis.com/css2?family=ZCOOL+KuaiLe&family=Ma+Shan+Zheng&family=Nunito:wght@400;600;700;800&display=swap');

:root {
  --pink-soft: #ffe4ec;
  --pink-light: #ffc2d4;
  --pink: #ff8fab;
  --pink-deep: #ff5d8f;
  --lavender: #e0c3fc;
  --lavender-deep: #b388ff;
  --peach: #ffd6a5;
  --mint: #caffbf;
  --sky: #bde0fe;
  --cream: #fff8f0;
  --text-dark: #5a3d5c;
  --text-medium: #8b6b8d;
  --shadow-pink: 0 10px 30px rgba(255, 143, 171, 0.25);
  --shadow-soft: 0 8px 24px rgba(179, 136, 255, 0.18);
}

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

body {
  font-family: 'Nunito', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  background: linear-gradient(135deg, #ffe4ec 0%, #e0c3fc 50%, #caffbf 100%);
  background-attachment: fixed;
  min-height: 100vh;
  color: var(--text-dark);
  overflow-x: hidden;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(circle at 10% 20%, rgba(255, 192, 203, 0.3) 0%, transparent 30%),
    radial-gradient(circle at 90% 80%, rgba(224, 195, 252, 0.3) 0%, transparent 30%),
    radial-gradient(circle at 50% 50%, rgba(202, 255, 191, 0.15) 0%, transparent 40%);
  pointer-events: none;
  z-index: 0;
}

/* ===== Floating decorations ===== */
.float-deco {
  position: fixed;
  pointer-events: none;
  z-index: 1;
  animation: floatUp 8s ease-in-out infinite;
  opacity: 0.6;
}

@keyframes floatUp {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-20px) rotate(10deg); }
}

/* ===== Navigation ===== */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 2px solid rgba(255, 143, 171, 0.3);
  padding: 14px 30px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: 0 4px 20px rgba(255, 143, 171, 0.1);
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--pink-deep);
  text-decoration: none;
}

.logo-icon {
  font-size: 1.8rem;
  animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-5px); }
}

.nav-links {
  display: flex;
  gap: 10px;
  list-style: none;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-medium);
  font-weight: 700;
  padding: 8px 18px;
  border-radius: 20px;
  transition: all 0.3s;
  font-size: 0.95rem;
}

.nav-links a:hover,
.nav-links a.active {
  background: var(--pink);
  color: white;
  transform: translateY(-2px);
  box-shadow: var(--shadow-pink);
}

/* ===== Hero / Welcome ===== */
.hero {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 60px 20px 40px;
}

.hero-badge {
  display: inline-block;
  background: linear-gradient(135deg, var(--pink), var(--lavender-deep));
  color: white;
  padding: 6px 20px;
  border-radius: 30px;
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 20px;
  box-shadow: var(--shadow-pink);
}

.hero h1 {
  font-family: 'ZCOOL KuaiLe', 'Ma Shan Zheng', cursive;
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  background: linear-gradient(135deg, var(--pink-deep), var(--lavender-deep));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 16px;
  line-height: 1.2;
}

.hero-sub {
  font-size: 1.2rem;
  color: var(--text-medium);
  max-width: 600px;
  margin: 0 auto 30px;
  line-height: 1.6;
}

.hero-emojis {
  font-size: 2.5rem;
  margin: 20px 0;
  letter-spacing: 8px;
}

.hero-emojis span {
  display: inline-block;
  animation: wave 2s ease-in-out infinite;
}

.hero-emojis span:nth-child(2) { animation-delay: 0.2s; }
.hero-emojis span:nth-child(3) { animation-delay: 0.4s; }
.hero-emojis span:nth-child(4) { animation-delay: 0.6s; }

@keyframes wave {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-10px) rotate(15deg); }
}

/* ===== Container ===== */
.container {
  position: relative;
  z-index: 2;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px 60px;
}

/* ===== Section title ===== */
.section-title {
  font-family: 'ZCOOL KuaiLe', cursive;
  font-size: 2rem;
  color: var(--pink-deep);
  text-align: center;
  margin: 40px 0 25px;
  position: relative;
}

.section-title::after {
  content: '✿';
  display: block;
  font-size: 1.2rem;
  color: var(--lavender-deep);
  margin-top: 6px;
}

/* ===== Lesson cards grid (homepage) ===== */
.lessons-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 22px;
  margin-top: 20px;
}

.lesson-card {
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(10px);
  border-radius: 24px;
  padding: 28px 20px;
  text-decoration: none;
  color: inherit;
  box-shadow: var(--shadow-soft);
  border: 2px solid rgba(255, 255, 255, 0.6);
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  position: relative;
  overflow: hidden;
}

.lesson-card::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255, 143, 171, 0.1) 0%, transparent 60%);
  opacity: 0;
  transition: opacity 0.4s;
}

.lesson-card:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: 0 20px 40px rgba(255, 93, 143, 0.25);
  border-color: var(--pink);
}

.lesson-card:hover::before {
  opacity: 1;
}

.lesson-card-pinyin {
  font-size: 2.8rem;
  font-weight: 800;
  color: var(--pink-deep);
  text-align: center;
  margin-bottom: 8px;
  font-family: 'Nunito', sans-serif;
}

.lesson-card-label {
  text-align: center;
  color: var(--text-medium);
  font-size: 0.9rem;
  font-weight: 600;
}

.lesson-card-tag {
  position: absolute;
  top: 12px;
  right: 12px;
  background: var(--mint);
  color: #2d6a4f;
  font-size: 0.7rem;
  font-weight: 800;
  padding: 3px 10px;
  border-radius: 12px;
}

.lesson-card-tag.coming {
  background: var(--peach);
  color: #b5651d;
}

/* ===== Lesson page header ===== */
.lesson-header {
  text-align: center;
  padding: 40px 20px 20px;
  position: relative;
  z-index: 2;
}

.lesson-day {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: linear-gradient(135deg, var(--pink), var(--lavender-deep));
  color: white;
  padding: 8px 22px;
  border-radius: 30px;
  font-weight: 800;
  font-size: 0.95rem;
  box-shadow: var(--shadow-pink);
  margin-bottom: 18px;
}

.lesson-main-pinyin {
  font-size: clamp(4rem, 12vw, 8rem);
  font-weight: 800;
  background: linear-gradient(135deg, var(--pink-deep), var(--lavender-deep));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  font-family: 'Nunito', sans-serif;
}

.lesson-desc {
  color: var(--text-medium);
  font-size: 1.05rem;
  margin-top: 10px;
}

/* ===== Tone cards ===== */
.tones-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 22px;
  margin: 30px 0;
}

.tone-card {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  border-radius: 28px;
  padding: 28px 20px;
  text-align: center;
  box-shadow: var(--shadow-soft);
  border: 3px solid transparent;
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  position: relative;
  cursor: pointer;
}

.tone-card:hover {
  transform: translateY(-6px);
}

.tone-card.tone-1 { border-color: var(--pink-light); }
.tone-card.tone-2 { border-color: var(--lavender); }
.tone-card.tone-3 { border-color: var(--mint); }
.tone-card.tone-4 { border-color: var(--peach); }

.tone-mark {
  font-size: 1rem;
  font-weight: 800;
  padding: 4px 14px;
  border-radius: 14px;
  display: inline-block;
  margin-bottom: 14px;
  color: white;
}

.tone-1 .tone-mark { background: var(--pink); }
.tone-2 .tone-mark { background: var(--lavender-deep); }
.tone-3 .tone-mark { background: #7cc77c; }
.tone-4 .tone-mark { background: #ff9a3c; }

.tone-pinyin {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--text-dark);
  margin-bottom: 8px;
  font-family: 'Nunito', sans-serif;
}

.tone-char {
  font-family: 'KaiTi', 'STKaiti', '楷体', '楷体_GB2312', 'Noto Serif SC', serif;
  font-size: 5rem;
  color: var(--pink-deep);
  line-height: 1.1;
  margin: 10px 0;
  transition: transform 0.3s;
  font-weight: normal;
}

.tone-card:hover .tone-char {
  transform: scale(1.1);
}

.tone-word {
  font-size: 1.1rem;
  color: var(--text-medium);
  margin-bottom: 14px;
  font-weight: 600;
}

.tone-word span {
  color: var(--pink-deep);
  font-weight: 800;
}

.tone-meaning {
  background: rgba(255, 228, 236, 0.5);
  border-radius: 12px;
  padding: 8px 10px;
  margin: 8px 0;
  font-size: 0.82rem;
  color: var(--text-medium);
  line-height: 1.5;
  text-align: left;
}

.tone-meaning .label {
  color: var(--lavender-deep);
  font-weight: 800;
  font-size: 0.78rem;
}

.tone-meaning .word-label {
  color: var(--pink-deep);
  font-weight: 800;
  font-size: 0.78rem;
}

.tone-meaning div {
  margin-top: 4px;
}

.speak-btn {
  background: linear-gradient(135deg, var(--pink), var(--pink-deep));
  color: white;
  border: none;
  padding: 10px 20px;
  border-radius: 20px;
  font-size: 0.9rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.3s;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  box-shadow: 0 4px 12px rgba(255, 93, 143, 0.3);
}

.speak-btn:hover {
  transform: scale(1.08);
  box-shadow: 0 6px 18px rgba(255, 93, 143, 0.45);
}

.speak-btn:active {
  transform: scale(0.95);
}

.speak-btn.speaking {
  background: linear-gradient(135deg, var(--lavender-deep), var(--pink-deep));
  animation: pulse 0.6s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 4px 12px rgba(255, 93, 143, 0.3); }
  50% { box-shadow: 0 0 0 10px rgba(255, 93, 143, 0.15); }
}

/* ===== Tip box ===== */
.tip-box {
  background: linear-gradient(135deg, rgba(255, 228, 236, 0.8), rgba(224, 195, 252, 0.8));
  border-radius: 20px;
  padding: 20px 24px;
  margin: 25px 0;
  border-left: 5px solid var(--pink-deep);
  box-shadow: var(--shadow-soft);
}

.tip-box h4 {
  color: var(--pink-deep);
  font-size: 1.05rem;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.tip-box p {
  color: var(--text-medium);
  line-height: 1.7;
  font-size: 0.95rem;
}

/* ===== Quiz section ===== */
.quiz-card {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  border-radius: 24px;
  padding: 30px;
  box-shadow: var(--shadow-soft);
  margin: 30px 0;
}

.quiz-question {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-dark);
  text-align: center;
  margin-bottom: 20px;
}

.quiz-char-display {
  font-family: 'KaiTi', 'STKaiti', '楷体', '楷体_GB2312', 'Noto Serif SC', serif;
  font-size: 5rem;
  text-align: center;
  color: var(--pink-deep);
  margin: 10px 0;
}

.quiz-options {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  max-width: 500px;
  margin: 0 auto;
}

.quiz-option {
  background: white;
  border: 2.5px solid var(--pink-light);
  border-radius: 16px;
  padding: 14px;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-dark);
  cursor: pointer;
  transition: all 0.3s;
  font-family: 'Nunito', sans-serif;
}

.quiz-option:hover {
  background: var(--pink-soft);
  transform: translateY(-2px);
}

.quiz-option.correct {
  background: var(--mint);
  border-color: #7cc77c;
  color: #2d6a4f;
  animation: celebrate 0.5s ease;
}

.quiz-option.wrong {
  background: #ffd6d6;
  border-color: #ff6b6b;
  color: #c92a2a;
  animation: shake 0.4s ease;
}

/* 看字写拼音输入框 */
.quiz-input-wrap {
  display: flex;
  gap: 12px;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  max-width: 500px;
  margin: 0 auto;
}

.quiz-pinyin-input {
  flex: 1;
  min-width: 160px;
  padding: 14px 18px;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-dark);
  background: white;
  border: 2.5px solid var(--pink-light);
  border-radius: 16px;
  outline: none;
  transition: all 0.3s;
  font-family: 'Nunito', sans-serif;
  text-align: center;
}

.quiz-pinyin-input:focus {
  border-color: var(--pink-deep);
  box-shadow: 0 0 0 4px rgba(255, 93, 143, 0.15);
}

.quiz-submit-btn {
  padding: 12px 26px;
  font-size: 1rem;
}

@keyframes celebrate {
  0% { transform: scale(1); }
  50% { transform: scale(1.15); }
  100% { transform: scale(1); }
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-8px); }
  75% { transform: translateX(8px); }
}

.quiz-feedback {
  text-align: center;
  margin-top: 18px;
  font-size: 1.1rem;
  font-weight: 700;
  min-height: 30px;
}

.quiz-feedback.correct { color: #2d6a4f; }
.quiz-feedback.wrong { color: #c92a2a; }

.quiz-progress {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 20px;
}

.quiz-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #ddd;
  transition: all 0.3s;
}

.quiz-dot.done { background: var(--mint); }
.quiz-dot.current { background: var(--pink-deep); transform: scale(1.3); }

.quiz-score {
  text-align: center;
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--pink-deep);
  margin-top: 15px;
}

/* ===== Footer ===== */
.footer {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 30px 20px;
  color: var(--text-medium);
  font-size: 0.9rem;
}

.footer span {
  color: var(--pink-deep);
  font-weight: 700;
}

/* ===== Back button ===== */
.back-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--text-medium);
  text-decoration: none;
  font-weight: 700;
  padding: 8px 16px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.6);
  transition: all 0.3s;
  margin-bottom: 10px;
}

.back-btn:hover {
  background: white;
  color: var(--pink-deep);
  transform: translateX(-3px);
}

/* ===== Pinyin table ===== */
.pinyin-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  background: rgba(255, 255, 255, 0.85);
  border-radius: 20px;
  overflow: hidden;
  box-shadow: var(--shadow-soft);
  margin: 20px 0;
}

.pinyin-table th,
.pinyin-table td {
  padding: 14px 10px;
  text-align: center;
  border-bottom: 1px solid rgba(255, 192, 203, 0.3);
}

.pinyin-table th {
  background: linear-gradient(135deg, var(--pink), var(--lavender-deep));
  color: white;
  font-weight: 800;
}

.pinyin-table td {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-dark);
}

.pinyin-table tr:last-child td {
  border-bottom: none;
}

.pinyin-table tr:hover td {
  background: rgba(255, 143, 171, 0.08);
}

/* ===== 上一页 / 下一页导航 ===== */
.lesson-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin: 30px 0 10px;
  flex-wrap: wrap;
}

.lesson-nav a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 12px 22px;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(10px);
  border: 2px solid var(--pink-light);
  border-radius: 22px;
  text-decoration: none;
  color: var(--pink-deep);
  font-weight: 800;
  font-size: 0.95rem;
  transition: all 0.3s;
  box-shadow: var(--shadow-soft);
}

.lesson-nav a:hover {
  background: var(--pink);
  color: white;
  transform: translateY(-2px);
  box-shadow: var(--shadow-pink);
}

.lesson-nav a.placeholder {
  visibility: hidden;
}

/* ===== 今日句子板块 ===== */
.sentence-card {
  background: linear-gradient(135deg, rgba(255, 228, 236, 0.85), rgba(224, 195, 252, 0.85));
  border-radius: 24px;
  padding: 24px 28px;
  margin: 25px 0;
  border-left: 5px solid var(--lavender-deep);
  box-shadow: var(--shadow-soft);
}

.sentence-card h4 {
  color: var(--lavender-deep);
  font-size: 1.1rem;
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.sentence-item {
  background: rgba(255, 255, 255, 0.7);
  border-radius: 16px;
  padding: 14px 18px;
  margin: 10px 0;
  transition: all 0.3s;
}

.sentence-item:hover {
  background: rgba(255, 255, 255, 0.95);
  transform: translateX(4px);
}

.sentence-text {
  font-family: 'KaiTi', 'STKaiti', '楷体', serif;
  font-size: 1.6rem;
  color: var(--text-dark);
  line-height: 1.6;
  margin-bottom: 6px;
}

.sentence-text ruby rt {
  font-size: 0.55em;
  color: var(--pink-deep);
  font-family: 'Nunito', sans-serif;
}

.sentence-pinyin {
  font-size: 0.85rem;
  color: var(--text-medium);
  font-family: 'Nunito', sans-serif;
  letter-spacing: 1px;
}

.sentence-meaning {
  font-size: 0.9rem;
  color: var(--text-medium);
  margin-top: 4px;
}

.sentence-speak {
  margin-top: 8px;
  background: linear-gradient(135deg, var(--lavender-deep), var(--pink));
  color: white;
  border: none;
  padding: 6px 14px;
  border-radius: 14px;
  font-size: 0.82rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.3s;
}

.sentence-speak:hover {
  transform: scale(1.06);
}

/* ===== Responsive ===== */
@media (max-width: 600px) {
  .nav-links { display: none; }
  .quiz-options { grid-template-columns: 1fr; }
  .navbar { padding: 12px 16px; }
}

/* ===== Confetti ===== */
.confetti {
  position: fixed;
  width: 10px;
  height: 10px;
  pointer-events: none;
  z-index: 9999;
  animation: confettiFall 1.5s ease-out forwards;
}

@keyframes confettiFall {
  0% { transform: translateY(0) rotate(0deg); opacity: 1; }
  100% { transform: translateY(100vh) rotate(720deg); opacity: 0; }
}

/* ===== Stroke order (笔顺) ===== */
.bihua-btn {
  background: linear-gradient(135deg, var(--lavender-deep), var(--pink));
  color: white;
  border: none;
  padding: 8px 16px;
  border-radius: 16px;
  font-size: 0.82rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.3s;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  box-shadow: 0 4px 12px rgba(179, 136, 255, 0.3);
  margin-top: 8px;
}

.bihua-btn:hover {
  transform: scale(1.06);
  box-shadow: 0 6px 16px rgba(179, 136, 255, 0.45);
}

.tone-btns {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

/* 笔顺模态框 */
.bihua-modal {
  position: fixed;
  inset: 0;
  background: rgba(90, 61, 92, 0.5);
  backdrop-filter: blur(6px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s;
}

.bihua-modal.show {
  opacity: 1;
  visibility: visible;
}

.bihua-modal-content {
  background: linear-gradient(160deg, #fff 0%, var(--pink-soft) 100%);
  border-radius: 28px;
  padding: 30px;
  max-width: 380px;
  width: 90%;
  text-align: center;
  box-shadow: 0 20px 60px rgba(255, 93, 143, 0.3);
  transform: scale(0.8);
  transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  position: relative;
}

.bihua-modal.show .bihua-modal-content {
  transform: scale(1);
}

.bihua-modal-title {
  font-family: 'ZCOOL KuaiLe', cursive;
  font-size: 1.5rem;
  color: var(--pink-deep);
  margin-bottom: 6px;
}

.bihua-modal-sub {
  color: var(--text-medium);
  font-size: 0.9rem;
  margin-bottom: 16px;
}

#bihua-char {
  display: flex;
  justify-content: center;
  align-items: center;
  margin: 10px auto 18px;
  background: white;
  border-radius: 16px;
  box-shadow: inset 0 2px 8px rgba(179, 136, 255, 0.1);
  width: 280px;
  height: 280px;
}

.bihua-modal-btns {
  display: flex;
  gap: 10px;
  justify-content: center;
  flex-wrap: wrap;
}

.bihua-modal-btns button {
  background: linear-gradient(135deg, var(--pink), var(--pink-deep));
  color: white;
  border: none;
  padding: 10px 18px;
  border-radius: 18px;
  font-size: 0.9rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.3s;
}

.bihua-modal-btns button:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 14px rgba(255, 93, 143, 0.35);
}

.bihua-modal-btns button.secondary {
  background: linear-gradient(135deg, var(--lavender-deep), var(--pink));
}

.bihua-close {
  position: absolute;
  top: 14px;
  right: 16px;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--text-medium);
  cursor: pointer;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s;
}

.bihua-close:hover {
  background: var(--pink-soft);
  color: var(--pink-deep);
}