:root {
  --bg-dark: #0f172a;
  --bg-dark-2: #111827;
  --text-main: #0f172a;
  --text-soft: #475569;
  --white: #ffffff;
  --border: rgba(148, 163, 184, 0.22);
  --shadow: 0 10px 30px rgba(15, 23, 42, 0.10);
  --shadow-lg: 0 20px 50px rgba(15, 23, 42, 0.16);
  --radius: 22px;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", sans-serif;
  color: var(--text-main);
}

.hero-section {
  background:
    radial-gradient(circle at top left, rgba(251, 191, 36, 0.18), transparent 30%),
    radial-gradient(circle at bottom right, rgba(59, 130, 246, 0.16), transparent 32%),
    linear-gradient(135deg, #0f172a 0%, #111827 45%, #1e293b 100%);
}

.tutor-hero {
  background:
    radial-gradient(circle at top left, rgba(16, 185, 129, 0.18), transparent 30%),
    radial-gradient(circle at bottom right, rgba(139, 92, 246, 0.18), transparent 32%),
    linear-gradient(135deg, #0f172a 0%, #111827 45%, #1e293b 100%);
}

.btn-primary,
.btn-green,
.btn-light,
.btn-dark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  border-radius: 9999px;
  padding: 0.85rem 1.35rem;
  font-weight: 700;
  transition: all 0.2s ease;
  text-decoration: none;
  box-shadow: var(--shadow);
}

.btn-primary {
  background: #0f172a;
  color: #fff;
}
.btn-primary:hover {
  background: #1e293b;
  transform: translateY(-1px);
}

.btn-green {
  background: linear-gradient(135deg, #16a34a, #22c55e);
  color: #fff;
}
.btn-green:hover {
  transform: translateY(-1px);
  filter: brightness(1.02);
}

.btn-light {
  background: rgba(255, 255, 255, 0.95);
  color: #0f172a;
}
.btn-light:hover {
  background: #fff;
  transform: translateY(-1px);
}

.btn-dark {
  background: linear-gradient(135deg, #0f172a, #1e293b);
  color: #fff;
}
.btn-dark:hover {
  transform: translateY(-1px);
  filter: brightness(1.03);
}

.section-badge {
  display: inline-flex;
  align-items: center;
  border-radius: 9999px;
  padding: 0.5rem 0.9rem;
  font-size: 0.85rem;
  font-weight: 700;
  background: #f8fafc;
  color: #334155;
  border: 1px solid #e2e8f0;
}

.badge-light {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.18);
  backdrop-filter: blur(10px);
}

.section-title {
  font-size: 2rem;
  line-height: 1.2;
  font-weight: 800;
  color: #0f172a;
  margin-top: 1rem;
}

.section-desc {
  max-width: 48rem;
  margin: 1rem auto 0;
  color: #64748b;
  line-height: 1.8;
}

.premium-card,
.contact-card,
.benefit-card {
  background: rgba(255, 255, 255, 0.94);
  border: 1px solid rgba(226, 232, 240, 0.95);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.premium-card {
  padding: 2rem;
}

.premium-dark-card {
  border-radius: 28px;
  padding: 2rem;
  background:
    linear-gradient(135deg, rgba(255,255,255,0.06), rgba(255,255,255,0.03)),
    linear-gradient(135deg, #0f172a, #1e293b);
  border: 1px solid rgba(255,255,255,0.08);
  box-shadow: var(--shadow-lg);
}

.feature-glass {
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.10);
  border-radius: 24px;
  padding: 1.5rem;
  backdrop-filter: blur(12px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.18);
  min-height: 190px;
}

.stat-card {
  background: rgba(255,255,255,0.10);
  border: 1px solid rgba(255,255,255,0.10);
  border-radius: 20px;
  padding: 1rem 1.1rem;
  backdrop-filter: blur(10px);
}

.stat-number {
  color: #fff;
  font-size: 1.35rem;
  font-weight: 800;
}

.stat-label {
  color: rgba(255,255,255,0.82);
  font-size: 0.9rem;
  margin-top: 0.2rem;
}

.holiday-card {
  position: relative;
  border-radius: 24px;
  padding: 1.5rem;
  min-height: 220px;
  color: #0f172a;
  box-shadow: var(--shadow);
  border: 1px solid rgba(255,255,255,0.45);
  overflow: hidden;
}

.holiday-card h3 {
  font-size: 1.25rem;
  font-weight: 800;
  margin-bottom: 0.6rem;
}

.holiday-card p {
  color: rgba(15, 23, 42, 0.78);
  line-height: 1.7;
  margin-bottom: 1rem;
}

.holiday-card span {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 700;
  padding: 0.38rem 0.7rem;
  border-radius: 9999px;
  background: rgba(255,255,255,0.7);
}

.holiday-icon {
  font-size: 2rem;
  margin-bottom: 1rem;
}

.holiday-card.red { background: linear-gradient(135deg, #fee2e2, #fecaca); }
.holiday-card.pink { background: linear-gradient(135deg, #fce7f3, #fbcfe8); }
.holiday-card.lime { background: linear-gradient(135deg, #ecfccb, #d9f99d); }
.holiday-card.rose { background: linear-gradient(135deg, #ffe4e6, #fecdd3); }
.holiday-card.indigo { background: linear-gradient(135deg, #e0e7ff, #c7d2fe); }
.holiday-card.teal { background: linear-gradient(135deg, #ccfbf1, #99f6e4); }
.holiday-card.slate { background: linear-gradient(135deg, #e2e8f0, #cbd5e1); }
.holiday-card.cyan { background: linear-gradient(135deg, #cffafe, #a5f3fc); }
.holiday-card.yellow { background: linear-gradient(135deg, #fef9c3, #fde68a); }
.holiday-card.purple { background: linear-gradient(135deg, #f3e8ff, #e9d5ff); }
.holiday-card.green { background: linear-gradient(135deg, #dcfce7, #bbf7d0); }
.holiday-card.orange { background: linear-gradient(135deg, #ffedd5, #fed7aa); }

.contact-card {
  padding: 2rem;
}

.benefit-card {
  display: flex;
  gap: 1rem;
  padding: 1.6rem;
  align-items: flex-start;
}

.benefit-card h3 {
  font-size: 1.15rem;
  font-weight: 800;
  color: #0f172a;
  margin-bottom: 0.45rem;
}

.benefit-card p {
  color: #64748b;
  line-height: 1.75;
}

.benefit-icon {
  width: 3.25rem;
  height: 3.25rem;
  border-radius: 18px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #eff6ff, #dbeafe);
  font-size: 1.4rem;
  flex-shrink: 0;
}

.footer-link,
.mobile-link {
  color: #94a3b8;
  text-decoration: none;
  transition: color 0.2s ease;
}

.footer-link:hover,
.mobile-link:hover {
  color: #ffffff;
}

.mobile-link {
  color: #334155;
}

.form-label {
  display: block;
  font-weight: 700;
  color: #0f172a;
  margin-bottom: 0.55rem;
}

.form-input {
  width: 100%;
  border-radius: 16px;
  border: 1px solid #dbe2ea;
  background: #fff;
  padding: 0.95rem 1rem;
  color: #0f172a;
  transition: all 0.18s ease;
  outline: none;
}

.form-input:focus {
  border-color: #94a3b8;
  box-shadow: 0 0 0 4px rgba(148, 163, 184, 0.15);
}

@media (max-width: 767px) {
  .section-title {
    font-size: 1.7rem;
  }

  .premium-card,
  .contact-card {
    padding: 1.35rem;
  }

  .premium-dark-card {
    padding: 1.4rem;
  }

  .feature-glass {
    min-height: 170px;
    padding: 1.2rem;
  }
}