/* ==========================================================================
   POPULAR DRIVING SCHOOL - Premium Styling Sheet
   Features: Black/White Reversible Theme, Glassmorphism, Responsive Grid
   ========================================================================== */

/* Import Premium Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Noto+Sans+SC:wght@300;400;500;700;900&display=swap');

:root {
  /* Default: White / Light Theme */
  --font-en: 'Inter', system-ui, -apple-system, sans-serif;
  --font-zh: 'Noto Sans SC', var(--font-en);
  
  --bg-primary: #ffffff;
  --bg-secondary: #f6f8fa;
  --bg-glass: rgba(255, 255, 255, 0.75);
  
  --text-primary: #111418;
  --text-secondary: #4a5464;
  --text-muted: #868e96;
  
  --accent: #228be6; /* Vibrant Royal Blue */
  --accent-rgb: 34, 139, 230;
  --accent-light: #e7f5ff;
  --accent-hover: #1c7ed6;
  
  --alert-bg: #fff9db;
  --alert-border: #ffe066;
  --alert-text: #856404;
  
  --card-bg: #ffffff;
  --card-shadow: 0 10px 30px rgba(0, 0, 0, 0.04), 0 1px 8px rgba(0, 0, 0, 0.02);
  --card-border: rgba(0, 0, 0, 0.06);
  --card-hover-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
  
  --border-color: #e9ecef;
  --input-bg: #f8f9fa;
  --input-border: #ced4da;
  --input-focus: #228be6;
  
  --badge-popular-bg: #ff922b;
  --badge-popular-text: #ffffff;
  --badge-value-bg: #5c7cfa;
  --badge-value-text: #ffffff;
}

[data-theme="dark"] {
  /* Reversible: Black / Dark Theme */
  --bg-primary: #0a0a0c;
  --bg-secondary: #121216;
  --bg-glass: rgba(10, 10, 12, 0.85);
  
  --text-primary: #f8f9fa;
  --text-secondary: #adb5bd;
  --text-muted: #6c757d;
  
  --accent: #22c55e; /* Cyber Green for premium neon look */
  --accent-rgb: 34, 197, 94;
  --accent-light: rgba(34, 197, 94, 0.1);
  --accent-hover: #16a34a;
  
  --alert-bg: #2b2310;
  --alert-border: #f59e0b;
  --alert-text: #fef08a;
  
  --card-bg: #16161c;
  --card-shadow: 0 10px 30px rgba(0, 0, 0, 0.3), 0 1px 8px rgba(0, 0, 0, 0.2);
  --card-border: rgba(255, 255, 255, 0.06);
  --card-hover-shadow: 0 20px 40px rgba(34, 197, 94, 0.15);
  
  --border-color: #24252e;
  --input-bg: #1c1d24;
  --input-border: #343a40;
  --input-focus: #22c55e;
  
  --badge-popular-bg: #f97316;
  --badge-popular-text: #ffffff;
  --badge-value-bg: #3b82f6;
  --badge-value-text: #ffffff;
}

/* ==========================================================================
   Base Elements & Reset
   ========================================================================== */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  transition: background-color 0.4s ease, color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-en);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

body.lang-zh {
  font-family: var(--font-zh);
}

a {
  text-decoration: none;
  color: inherit;
}

ul {
  list-style: none;
}

button, input, select, textarea {
  font-family: inherit;
}

/* ==========================================================================
   Header & Sleek Navigation
   ========================================================================== */
header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 80px;
  background-color: var(--bg-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--card-border);
  z-index: 1000;
  display: flex;
  align-items: center;
}

.nav-container {
  width: 100%;
  max-width: 1300px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo-block {
  display: flex;
  flex-direction: column;
}

.logo-main {
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.logo-main svg {
  color: var(--accent);
  fill: currentColor;
}

.logo-sub {
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--text-muted);
  text-transform: uppercase;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-link {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-secondary);
  position: relative;
  padding: 0.5rem 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--accent);
  transition: width 0.3s ease;
}

.nav-link:hover {
  color: var(--text-primary);
}

.nav-link:hover::after {
  width: 100%;
}

.nav-controls {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

/* Compact Premium Switches */
.switch-btn {
  background: none;
  border: 1px solid var(--border-color);
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  padding: 0.4rem 0.8rem;
  border-radius: 30px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  box-shadow: 0 2px 5px rgba(0,0,0,0.02);
}

.switch-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-1px);
}

.theme-toggle svg {
  width: 14px;
  height: 14px;
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.5rem;
  cursor: pointer;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero {
  padding: 180px 2rem 100px;
  background: radial-gradient(circle at 80% 20%, var(--accent-light) 0%, transparent 40%), var(--bg-primary);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 100px;
  background: linear-gradient(to top, var(--bg-secondary), transparent);
  pointer-events: none;
}

.hero-wrapper {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
  gap: 4rem;
}

.hero-text {
  display: flex;
  flex-direction: column;
}

.hero-tag {
  font-size: 0.75rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--accent);
  margin-bottom: 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.hero-tag::before {
  content: '';
  width: 12px;
  height: 2px;
  background-color: var(--accent);
}

.hero-title {
  font-size: 4rem;
  line-height: 1.1;
  font-weight: 800;
  letter-spacing: -2px;
  color: var(--text-primary);
  margin-bottom: 1.5rem;
}

body.lang-zh .hero-title {
  font-size: 3.5rem;
  font-weight: 900;
  letter-spacing: -0.5px;
  line-height: 1.2;
}

.hero-desc {
  font-size: 1.15rem;
  color: var(--text-secondary);
  margin-bottom: 2.5rem;
  max-width: 540px;
}

.hero-actions {
  display: flex;
  gap: 1.25rem;
  margin-bottom: 3.5rem;
}

/* Premium Buttons */
.btn {
  padding: 0.9rem 2rem;
  border-radius: 50px;
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  border: none;
}

.btn-primary {
  background-color: var(--accent);
  color: var(--bg-primary);
  box-shadow: 0 8px 24px rgba(var(--accent-rgb), 0.25);
}

.btn-primary:hover {
  background-color: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(var(--accent-rgb), 0.35);
}

.btn-secondary {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
}

.btn-secondary:hover {
  background-color: var(--bg-primary);
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
}

/* Vector Graphic Representation of Dual-Brake Steering */
.hero-graphic {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.graphic-circle {
  width: 420px;
  height: 420px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--accent-light) 0%, transparent 70%);
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
  animation: floatCircle 8s ease-in-out infinite;
}

.steering-wheel {
  width: 280px;
  height: 280px;
  border: 12px solid var(--text-primary);
  border-radius: 50%;
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  box-shadow: var(--card-shadow);
  background-color: var(--bg-primary);
}

.steering-wheel::before, .steering-wheel::after {
  content: '';
  position: absolute;
  background-color: var(--text-primary);
}

.steering-wheel::before {
  width: 100%;
  height: 12px;
  top: 50%;
  transform: translateY(-50%);
}

.steering-wheel::after {
  width: 12px;
  height: 50%;
  bottom: 0;
}

.steering-center {
  width: 70px;
  height: 70px;
  border-radius: 50%;
  background-color: var(--accent);
  border: 6px solid var(--bg-primary);
  position: absolute;
  z-index: 2;
  box-shadow: 0 4px 10px rgba(0,0,0,0.15);
}

.graphic-badge {
  position: absolute;
  padding: 0.8rem 1.2rem;
  background-color: var(--card-bg);
  border: 1px solid var(--card-border);
  box-shadow: var(--card-shadow);
  border-radius: 12px;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  z-index: 10;
}

.graphic-badge-1 {
  top: 15%;
  left: 0;
  animation: floatBadge1 6s ease-in-out infinite;
}

.graphic-badge-2 {
  bottom: 15%;
  right: 0;
  animation: floatBadge2 7s ease-in-out infinite;
}

.badge-icon {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background-color: var(--accent-light);
  color: var(--accent);
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 1.1rem;
}

.badge-text {
  display: flex;
  flex-direction: column;
}

.badge-num {
  font-size: 1.15rem;
  font-weight: 800;
  line-height: 1;
}

.badge-lbl {
  font-size: 0.65rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
}

/* Animations */
@keyframes floatCircle {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-15px) rotate(5deg); }
}

@keyframes floatBadge1 {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

@keyframes floatBadge2 {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(8px); }
}

/* ==========================================================================
   Notice / Alert Section
   ========================================================================== */
.alert-banner {
  max-width: 1200px;
  margin: -40px auto 40px;
  padding: 1.25rem 2rem;
  background-color: var(--alert-bg);
  border: 1px solid var(--alert-border);
  color: var(--alert-text);
  border-radius: 16px;
  display: flex;
  align-items: center;
  gap: 1.5rem;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.02);
  z-index: 10;
  position: relative;
}

.alert-icon {
  font-size: 1.8rem;
  animation: pulseAlert 2s infinite;
}

.alert-content {
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.alert-title {
  font-weight: 800;
  font-size: 0.95rem;
  letter-spacing: -0.2px;
  margin-bottom: 0.2rem;
  text-transform: uppercase;
}

.alert-text {
  font-size: 0.85rem;
  line-height: 1.4;
  font-weight: 500;
}

@keyframes pulseAlert {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.1); }
}

/* ==========================================================================
   MTO Information Section
   ========================================================================== */
.info-section {
  padding: 80px 2rem;
  background-color: var(--bg-secondary);
}

.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 4rem;
}

.section-title {
  font-size: 2.25rem;
  font-weight: 800;
  letter-spacing: -1px;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
}

body.lang-zh .section-title {
  font-size: 2.1rem;
  font-weight: 800;
}

.section-subtitle {
  font-size: 1rem;
  color: var(--text-secondary);
}

.info-grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.info-card {
  background-color: var(--card-bg);
  border: 1px solid var(--card-border);
  box-shadow: var(--card-shadow);
  border-radius: 20px;
  padding: 2.5rem;
  position: relative;
  overflow: hidden;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.info-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--card-hover-shadow);
  border-color: var(--accent);
}

.info-card-num {
  font-size: 3.5rem;
  font-weight: 900;
  color: var(--accent-light);
  line-height: 1;
  margin-bottom: 1.25rem;
  position: absolute;
  top: 1rem;
  right: 1.5rem;
  opacity: 0.8;
}

[data-theme="dark"] .info-card-num {
  color: rgba(34, 197, 94, 0.08);
}

.info-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 1rem;
  position: relative;
  z-index: 2;
  line-height: 1.4;
  padding-right: 2rem;
}

.info-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
  position: relative;
  z-index: 2;
}

/* ==========================================================================
   Courses / Packages Grid
   ========================================================================== */
.courses-section {
  padding: 100px 2rem;
  background-color: var(--bg-primary);
}

.courses-grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2.5rem;
}

.course-card {
  background-color: var(--card-bg);
  border: 1px solid var(--card-border);
  box-shadow: var(--card-shadow);
  border-radius: 24px;
  padding: 3rem;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.course-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--card-hover-shadow);
  border-color: var(--accent);
}

.course-card.highlighted {
  border: 2px solid var(--accent);
}

.card-badge {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  padding: 0.4rem 0.8rem;
  border-radius: 30px;
  font-size: 0.7rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.card-badge.popular {
  background-color: var(--badge-popular-bg);
  color: var(--badge-popular-text);
}

.card-badge.value {
  background-color: var(--badge-value-bg);
  color: var(--badge-value-text);
}

.course-card h3 {
  font-size: 1.6rem;
  font-weight: 800;
  margin-bottom: 0.75rem;
  color: var(--text-primary);
  letter-spacing: -0.5px;
}

.course-card p.desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  line-height: 1.5;
  min-height: 48px;
}

.course-price-block {
  display: flex;
  align-items: baseline;
  margin-bottom: 2.5rem;
}

.price-currency {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent);
}

.price-val {
  font-size: 3.5rem;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1;
  letter-spacing: -1.5px;
}

.price-suffix {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-left: 0.5rem;
}

.course-features {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 3rem;
  flex-grow: 1;
}

.course-feat-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.course-feat-item svg {
  color: var(--accent);
  margin-top: 0.15rem;
  flex-shrink: 0;
  width: 16px;
  height: 16px;
}

.course-card .btn {
  width: 100%;
}

/* ==========================================================================
   About Section
   ========================================================================== */
.about-section {
  padding: 100px 2rem;
  background-color: var(--bg-secondary);
}

.about-wrapper {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
  gap: 5rem;
}

.about-details h2 {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -1px;
  margin-bottom: 1.5rem;
}

.about-details p {
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 1.7;
  margin-bottom: 1.5rem;
}

.about-features {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.about-feat-card {
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
}

.about-feat-icon {
  width: 50px;
  height: 50px;
  border-radius: 16px;
  background-color: var(--accent-light);
  color: var(--accent);
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 1.3rem;
  flex-shrink: 0;
  box-shadow: 0 4px 10px rgba(var(--accent-rgb), 0.05);
}

.about-feat-text h4 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.4rem;
}

.about-feat-text p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  margin-bottom: 0;
  line-height: 1.5;
}

/* Interactive Badge Panel */
.about-interactive-panel {
  display: flex;
  justify-content: center;
}

.interactive-card {
  background-color: var(--card-bg);
  border: 1px solid var(--card-border);
  box-shadow: var(--card-shadow);
  border-radius: 28px;
  padding: 3rem 2.5rem;
  width: 100%;
  max-width: 420px;
  text-align: center;
}

.interactive-icon {
  width: 70px;
  height: 70px;
  border-radius: 50%;
  background-color: var(--accent-light);
  color: var(--accent);
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 2rem;
  margin: 0 auto 1.5rem;
}

.interactive-card h3 {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.interactive-card p {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 2rem;
}

.interactive-buttons {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.choice-btn {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  padding: 0.8rem 1.5rem;
  border-radius: 12px;
  font-size: 0.88rem;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.choice-btn:hover, .choice-btn.active {
  border-color: var(--accent);
  background-color: var(--accent-light);
  color: var(--accent);
}

.choice-btn svg {
  opacity: 0;
  transition: opacity 0.2s ease;
}

.choice-btn.active svg {
  opacity: 1;
}

/* ==========================================================================
   Online Registration Section
   ========================================================================== */
.register-section {
  padding: 100px 2rem;
  background-color: var(--bg-primary);
}

.register-wrapper {
  max-width: 800px;
  margin: 0 auto;
}

.register-card {
  background-color: var(--card-bg);
  border: 1px solid var(--card-border);
  box-shadow: var(--card-shadow);
  border-radius: 28px;
  padding: 4rem 3.5rem;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  margin-top: 2.5rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-group.full-width {
  grid-column: span 2;
}

.form-group label {
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-secondary);
}

.form-group input, .form-group select, .form-group textarea {
  background-color: var(--input-bg);
  border: 1px solid var(--input-border);
  color: var(--text-primary);
  padding: 0.9rem 1.2rem;
  border-radius: 12px;
  font-size: 0.95rem;
  outline: none;
}

.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  border-color: var(--input-focus);
  box-shadow: 0 0 0 4px rgba(var(--accent-rgb), 0.12);
  background-color: var(--bg-primary);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.form-message {
  padding: 1rem 1.5rem;
  border-radius: 12px;
  font-size: 0.9rem;
  font-weight: 600;
  display: none;
  margin-top: 1.5rem;
}

.form-message.success {
  background-color: rgba(34, 197, 94, 0.12);
  border: 1px solid rgba(34, 197, 94, 0.3);
  color: #22c55e;
  display: block;
}

.form-message.error {
  background-color: rgba(239, 68, 68, 0.12);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #ef4444;
  display: block;
}

.register-card .btn {
  margin-top: 1.5rem;
  width: 100%;
  padding: 1.1rem;
}

/* ==========================================================================
   FAQ Section
   ========================================================================== */
.faq-section {
  padding: 100px 2rem;
  background-color: var(--bg-secondary);
}

.faq-wrapper {
  max-width: 780px;
  margin: 0 auto;
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.faq-item {
  background-color: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--card-shadow);
}

.faq-trigger {
  width: 100%;
  padding: 1.5rem 2rem;
  background: none;
  border: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  text-align: left;
  cursor: pointer;
  color: var(--text-primary);
  font-size: 1.05rem;
  font-weight: 700;
}

.faq-trigger:hover h4 {
  color: var(--accent);
}

.faq-trigger svg {
  color: var(--text-muted);
  transition: transform 0.3s ease, color 0.3s ease;
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.faq-item.active .faq-trigger svg {
  transform: rotate(180deg);
  color: var(--accent);
}

.faq-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s cubic-bezier(0, 1, 0, 1);
  background-color: var(--bg-secondary);
}

.faq-item.active .faq-content {
  max-height: 1000px;
  transition: max-height 0.4s cubic-bezier(1, 0, 1, 0);
  border-top: 1px solid var(--border-color);
}

.faq-answer {
  padding: 1.5rem 2rem;
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ==========================================================================
   Contact Section
   ========================================================================== */
.contact-section {
  padding: 100px 2rem;
  background-color: var(--bg-primary);
}

.contact-grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
}

.contact-card {
  background-color: var(--card-bg);
  border: 1px solid var(--card-border);
  box-shadow: var(--card-shadow);
  border-radius: 24px;
  padding: 3rem;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.contact-item {
  display: flex;
  gap: 1.25rem;
  align-items: flex-start;
}

.contact-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background-color: var(--accent-light);
  color: var(--accent);
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 1.1rem;
  flex-shrink: 0;
}

.contact-text h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 0.25rem;
}

.contact-text p {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
}

.contact-map-card {
  border-radius: 24px;
  overflow: hidden;
  box-shadow: var(--card-shadow);
  border: 1px solid var(--card-border);
  height: 100%;
  min-height: 380px;
  background-color: var(--bg-secondary);
  display: flex;
  flex-direction: column;
}

.map-header {
  padding: 1.5rem 2rem;
  background-color: var(--card-bg);
  border-bottom: 1px solid var(--border-color);
  font-weight: 800;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.map-header svg {
  color: var(--accent);
}

.map-iframe-container {
  flex-grow: 1;
  width: 100%;
  height: 100%;
}

/* ==========================================================================
   Footer
   ========================================================================== */
footer {
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 80px 2rem 30px;
}

.footer-top {
  max-width: 1200px;
  margin: 0 auto 40px;
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 4rem;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.footer-brand p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  max-width: 320px;
}

.footer-links-col h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 1.5rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.footer-links-col ul {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-links-col a {
  font-size: 0.88rem;
  color: var(--text-secondary);
}

.footer-links-col a:hover {
  color: var(--accent);
}

.footer-bottom {
  max-width: 1200px;
  margin: 0 auto;
  border-top: 1px solid var(--border-color);
  padding-top: 30px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
  text-align: center;
}

.compliance-text {
  font-size: 0.75rem;
  color: var(--text-muted);
  line-height: 1.5;
  max-width: 800px;
}

.footer-rights-block {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* ==========================================================================
   Responsive Styles
   ========================================================================== */
@media (max-width: 1024px) {
  .hero-wrapper {
    grid-template-columns: 1fr;
    gap: 3rem;
    text-align: center;
  }
  
  .hero-text {
    align-items: center;
  }
  
  .hero-desc {
    margin-left: auto;
    margin-right: auto;
  }
  
  .hero-actions {
    justify-content: center;
  }
  
  .hero-graphic {
    order: -1;
  }
  
  .graphic-circle {
    width: 340px;
    height: 340px;
  }
  
  .steering-wheel {
    width: 220px;
    height: 220px;
  }
  
  .info-grid {
    grid-template-columns: 1fr;
  }
  
  .courses-grid {
    grid-template-columns: 1fr;
  }
  
  .about-wrapper {
    grid-template-columns: 1fr;
    gap: 4rem;
  }
  
  .contact-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  header {
    height: 70px;
  }
  
  .nav-menu {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--bg-primary);
    flex-direction: column;
    padding: 3rem 2rem;
    gap: 1.5rem;
    align-items: flex-start;
    transform: translateX(100%);
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border-top: 1px solid var(--border-color);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
  }
  
  .nav-menu.open {
    transform: translateX(0);
  }
  
  .nav-link {
    font-size: 1.25rem;
    width: 100%;
    padding: 0.5rem 0;
  }
  
  .mobile-toggle {
    display: block;
  }
  
  .hero-title {
    font-size: 2.75rem;
  }
  
  body.lang-zh .hero-title {
    font-size: 2.5rem;
  }
  
  .alert-banner {
    flex-direction: column;
    text-align: center;
    gap: 0.75rem;
    margin: -20px 1rem 40px;
  }
  
  .register-card {
    padding: 2.5rem 1.5rem;
  }
  
  .form-grid {
    grid-template-columns: 1fr;
  }
  
  .form-group.full-width {
    grid-column: span 1;
  }
  
  .footer-top {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}