/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; -webkit-text-size-adjust: 100%; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Noto Sans SC", "Helvetica Neue", sans-serif;
  background: #FFF8F0;
  color: #3C2415;
  line-height: 1.6;
  padding-bottom: env(safe-area-inset-bottom);
}
.container { max-width: 480px; margin: 0 auto; padding: 0 20px; }
.section { padding: 40px 0; }
.section-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: #5C3A1E;
  text-align: center;
  margin-bottom: 8px;
  letter-spacing: 2px;
  position: relative;
}
.section-title::after {
  content: '';
  display: block;
  width: 40px;
  height: 3px;
  background: linear-gradient(90deg, #C4956A, #8B6914);
  margin: 12px auto 16px;
  border-radius: 2px;
}
.section-desc {
  text-align: center;
  font-size: 0.9rem;
  color: #7A5C3A;
  margin-bottom: 24px;
  line-height: 1.5;
}
.quote {
  text-align: center;
  font-style: italic;
  color: #A08060;
  font-size: 0.9rem;
  margin-top: 16px;
  letter-spacing: 1px;
}

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 320px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: linear-gradient(135deg, #2C1810 0%, #5C3A1E 40%, #8B6914 100%);
}
.hero-bg {
  position: absolute;
  inset: 0;
  opacity: 0.08;
  background:
    radial-gradient(ellipse at 20% 30%, #FFF 0%, transparent 60%),
    radial-gradient(ellipse at 80% 70%, #C4956A 0%, transparent 50%);
}
.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 60px 20px;
}
.hero-subtitle {
  font-size: 0.8rem;
  letter-spacing: 8px;
  color: #C4956A;
  margin-bottom: 12px;
}
.hero-title {
  font-size: 2rem;
  font-weight: 800;
  color: #F5E6D3;
  letter-spacing: 4px;
  margin-bottom: 8px;
}
.hero-desc {
  font-size: 0.95rem;
  color: #D4B896;
  letter-spacing: 2px;
  margin-bottom: 16px;
}
.hero-tagline {
  font-size: 0.9rem;
  color: #C4956A;
  font-style: italic;
  letter-spacing: 2px;
}

/* ===== Intro ===== */
.intro {
  background: #F5E6D3;
  text-align: center;
}
.intro p {
  font-size: 0.95rem;
  color: #5C3A1E;
  line-height: 1.8;
}

/* ===== 讲师 ===== */
.teachers { background: #FFF8F0; }
.teacher-cards {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 16px;
}
.teacher-card {
  background: #FDF5E6;
  border-radius: 16px;
  padding: 20px;
  border: 1px solid #E8D5B8;
  box-shadow: 0 2px 8px rgba(92,58,30,0.06);
}
.teacher-card h3 {
  font-size: 1.1rem;
  color: #5C3A1E;
  margin-bottom: 10px;
  padding-bottom: 8px;
  border-bottom: 1px solid #E8D5B8;
}
.teacher-card ul {
  list-style: none;
  padding: 0;
}
.teacher-card li {
  font-size: 0.85rem;
  color: #7A5C3A;
  padding: 4px 0 4px 16px;
  position: relative;
  line-height: 1.5;
}
.teacher-card li::before {
  content: '·';
  position: absolute;
  left: 4px;
  color: #C4956A;
  font-weight: bold;
}

/* ===== 课程卡片 ===== */
.courses { background: #FDF5E6; }
.course-list { display: flex; flex-direction: column; gap: 14px; }
.course-card {
  background: #FFF8F0;
  border-radius: 14px;
  padding: 16px;
  border: 1.5px solid #E8D5B8;
  transition: all 0.2s;
  position: relative;
}
.course-card-title {
  font-size: 1rem;
  font-weight: 700;
  color: #5C3A1E;
  margin-bottom: 4px;
}
.course-card-sub {
  font-size: 0.8rem;
  color: #8B6914;
  margin-bottom: 6px;
  letter-spacing: 1px;
}
.course-card-desc {
  font-size: 0.8rem;
  color: #7A5C3A;
  line-height: 1.6;
}
.course-card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 10px;
  padding-top: 8px;
  border-top: 1px solid #F0E8D8;
}
.detail-btn {
  font-size: 0.75rem;
  color: #8B6914;
  background: none;
  border: 1px solid #C4956A;
  border-radius: 6px;
  padding: 4px 12px;
  cursor: pointer;
  transition: all 0.2s;
  font-family: inherit;
}
.detail-btn:active {
  background: #F5E6D3;
}
.course-card-taste {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 8px;
}
.taste-tag {
  font-size: 0.7rem;
  background: #F5E6D3;
  color: #7A5C3A;
  padding: 2px 10px;
  border-radius: 20px;
  border: 1px solid #E8D5B8;
}

/* ===== 立即报名 ===== */
.form-section { background: #FFF8F0; padding-bottom: 60px; }

.submit-btn {
  width: 100%;
  max-width: 320px;
  padding: 16px 14px;
  font-size: 1.1rem;
  font-weight: 700;
  color: #FFF;
  background: linear-gradient(135deg, #5C3A1E, #8B6914);
  border: none;
  border-radius: 12px;
  cursor: pointer;
  letter-spacing: 4px;
  transition: all 0.2s;
  margin-top: 8px;
}
.submit-btn:active { transform: scale(0.98); opacity: 0.9; }

/* ===== Footer ===== */
.footer {
  text-align: center;
  padding: 24px 20px;
  background: #2C1810;
  color: #C4956A;
}
.footer p { font-size: 0.85rem; letter-spacing: 2px; }
.footer-small { font-size: 0.75rem; margin-top: 4px; opacity: 0.7; }

.toast {
  position: fixed;
  top: 60px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(44,24,16,0.9);
  color: #F5E6D3;
  padding: 10px 24px;
  border-radius: 8px;
  font-size: 0.85rem;
  z-index: 999;
  opacity: 0;
  transition: opacity 0.3s;
  pointer-events: none;
  max-width: 90%;
}
.toast.show { opacity: 1; }

/* ===== Responsive ===== */
@media (min-width: 480px) {
  .container { padding: 0 24px; }
  .teacher-cards {
    flex-direction: row;
  }
  .teacher-card { flex: 1; }
}
@media (max-width: 380px) {
  .hero-title { font-size: 1.6rem; }
  .course-card-title { font-size: 0.9rem; }
}