/* --- Tab Navigation Styles --- */
.top-tabs-nav {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(30, 138, 154, 0.2);
  display: flex;
  justify-content: center;
  padding: 0 10px;
  overflow-x: auto;
  scrollbar-width: none;
}
.top-tabs-nav::-webkit-scrollbar { display: none; }

.tab-btn {
  background: transparent;
  border: none;
  font-size: 1.1rem;
  font-weight: 600;
  color: #6B7280;
  padding: 15px 20px;
  cursor: pointer;
  position: relative;
  transition: color 0.3s;
  white-space: nowrap;
}
.tab-btn:hover {
  color: var(--cyan-deep);
}
.tab-btn.active {
  color: var(--cyan-deep);
}
.tab-btn.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 10%;
  width: 80%;
  height: 3px;
  background: var(--cyan-deep);
  border-radius: 3px 3px 0 0;
}

/* --- Tab Content Styles --- */
.tab-pane {
  display: none;
  animation: fadeIn 0.4s ease-in-out;
}
.tab-pane.active {
  display: block;
}
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

:root {
  --cyan-light: #80E5F0;
  --cyan-deep: #1E8A9A;
  --bg-color: #F8FAFC;
  --text-dark: #1F2937;
  --text-light: #FFFFFF;
  --glass-shadow: 0 8px 32px rgba(30, 138, 154, 0.2), 0 2px 8px rgba(30, 138, 154, 0.1), inset 0 0 0 1px rgba(255, 255, 255, 0.2);
}

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

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-dark);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Glassmorphism Utilities */
.quantum-glass {
  background: linear-gradient(135deg, var(--cyan-light) 0%, var(--cyan-deep) 100%);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  position: relative;
  overflow: hidden;
  border-radius: 20px;
  box-shadow: var(--glass-shadow);
  color: var(--text-light);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.quantum-glass::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 50%;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.3) 0%, transparent 100%);
  pointer-events: none;
}

.quantum-glass:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 40px rgba(30, 138, 154, 0.3), inset 0 0 0 1px rgba(255, 255, 255, 0.3);
}

.quantum-glass-light {
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.6) 0%, rgba(255, 255, 255, 0.9) 100%);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  position: relative;
  border-radius: 20px;
  box-shadow: 0 8px 32px rgba(30, 138, 154, 0.1), inset 0 0 0 1px rgba(255, 255, 255, 0.8);
  color: var(--text-dark);
}

/* Typography on Glass */
.quantum-glass h1,
.quantum-glass h2,
.quantum-glass h3,
.quantum-glass h4 {
  color: #FFFFFF;
  position: relative;
  z-index: 1;
}

.quantum-glass p,
.quantum-glass span {
  color: rgba(255, 255, 255, 0.95);
  position: relative;
  z-index: 1;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 12px 28px;
  border-radius: 30px;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s ease;
  cursor: pointer;
  border: none;
  position: relative;
  z-index: 1;
}

.btn-primary {
  background: #FFFFFF;
  color: var(--cyan-deep);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.btn-primary:hover {
  background: var(--cyan-light);
  color: #FFFFFF;
  box-shadow: 0 6px 20px rgba(30, 138, 154, 0.3);
}

.btn-outline {
  background: transparent;
  color: #FFFFFF;
  border: 2px solid #FFFFFF;
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.1);
}

/* Section Spacing */
section {
  padding: 80px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 50px;
}

.section-header h2 {
  font-size: 2.5rem;
  color: var(--cyan-deep);
  margin-bottom: 15px;
}

.section-header p {
  font-size: 1.1rem;
  color: #6B7280;
  max-width: 600px;
  margin: 0 auto;
}

/* Base Layout Component Styles */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 30px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

@media (max-width: 992px) {
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {

  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }

  section {
    padding: 50px 0;
  }

  .section-header h2 {
    font-size: 2rem;
  }
}

/* Hero Section */
.hero {
  min-height: 90vh;
  display: flex;
  align-items: center;
  position: relative;
  background-image: url('generated_images/01_hero_banner.png');
  background-size: cover;
  background-position: center;
}

.hero::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(90deg, rgba(255, 255, 255, 0.9) 0%, rgba(255, 255, 255, 0.4) 100%);
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 600px;
}

.hero h1 {
  font-size: 4rem;
  color: var(--cyan-deep);
  line-height: 1.1;
  margin-bottom: 10px;
}

.hero h2 {
  font-size: 1.8rem;
  color: var(--text-dark);
  font-weight: 500;
  margin-bottom: 20px;
}

.hero p {
  font-size: 1.25rem;
  color: #4B5563;
  margin-bottom: 40px;
}

.hero-buttons {
  display: flex;
  gap: 20px;
}

.hero-buttons .btn-primary {
  background: linear-gradient(135deg, var(--cyan-light) 0%, var(--cyan-deep) 100%);
  color: white;
  border: none;
}

.hero-buttons .btn-primary:hover {
  background: linear-gradient(135deg, var(--cyan-deep) 0%, var(--cyan-light) 100%);
}

.hero-buttons .btn-outline {
  color: var(--cyan-deep);
  border-color: var(--cyan-deep);
}

.hero-buttons .btn-outline:hover {
  background: rgba(30, 138, 154, 0.05);
}

/* Trust Cards */
.trust-cards {
  margin-top: -60px;
  position: relative;
  z-index: 10;
}

.trust-card {
  padding: 30px 20px;
  text-align: center;
  height: 100%;
}

.trust-card img {
  width: 64px;
  height: 64px;
  object-fit: contain;
  margin-bottom: 20px;
}

.trust-card h3 {
  font-size: 1.25rem;
  margin-bottom: 10px;
}

.trust-card p {
  font-size: 0.9rem;
  opacity: 0.9;
}

/* Features */
.features {
  background: white;
}

.feature-item {
  display: flex;
  align-items: center;
  gap: 40px;
  margin-bottom: 60px;
}

.feature-item:nth-child(even) {
  flex-direction: row-reverse;
}

.feature-image img {
  width: 100%;
  border-radius: 20px;
  box-shadow: var(--glass-shadow);
}

.feature-content h3 {
  font-size: 2rem;
  color: var(--cyan-deep);
  margin-bottom: 15px;
}

.feature-content p {
  font-size: 1.1rem;
  color: #4B5563;
}

/* Process Section */
.process {
  background-color: var(--bg-color);
}

.process-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.process-card {
  border-radius: 20px;
  overflow: hidden;
  background: white;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
  transition: transform 0.3s;
}

.process-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(30, 138, 154, 0.15);
}

.process-img {
  width: 100%;
  height: 220px;
  object-fit: cover;
}

.process-content {
  padding: 25px;
  position: relative;
}

.process-number {
  position: absolute;
  top: -20px;
  right: 25px;
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--cyan-light) 0%, var(--cyan-deep) 100%);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  font-size: 1.2rem;
  z-index: 1;
}

.process-card h3 {
  color: var(--cyan-deep);
  margin-bottom: 10px;
  font-size: 1.25rem;
}

.process-card p {
  color: #6B7280;
  font-size: 0.95rem;
}

/* Pricing Section */
.pricing {
  background: white;
}

.pricing-table-container {
  overflow-x: auto;
  margin-bottom: 40px;
}

.quantum-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  min-width: 800px;
}

.quantum-table th {
  background: linear-gradient(135deg, var(--cyan-light) 0%, var(--cyan-deep) 100%);
  color: white;
  padding: 15px;
  text-align: left;
  font-weight: 600;
}

.quantum-table th:first-child {
  border-top-left-radius: 10px;
}

.quantum-table th:last-child {
  border-top-right-radius: 10px;
}

.quantum-table td {
  padding: 15px;
  border-bottom: 1px solid #E5E7EB;
  color: #374151;
}

.quantum-table tr:nth-child(even) td {
  background-color: #F9FAFB;
}

.quantum-table tr {
  transition: all 0.2s ease;
}

.quantum-table tr:hover td {
  background-color: rgba(30, 138, 154, 0.08);
  transform: scale(1.01);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
  position: relative;
  z-index: 2;
}

.price-old {
  text-decoration: line-through;
  color: #9CA3AF;
  font-size: 0.9rem;
}

.price-new {
  color: #EF4444;
  /* Keep red for emphasis on price drop? Or teal? Let's use deep teal for brand consistency */
  color: var(--cyan-deep);
  font-weight: bold;
  font-size: 1.1rem;
}

/* Parameters Section */
.parameters {
  background-color: var(--bg-color);
}

/* Comparison Section */
.comparison {
  background: white;
}

.comparison-image {
  width: 100%;
  border-radius: 20px;
  margin-bottom: 40px;
  box-shadow: var(--glass-shadow);
}

.advantage-list {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.advantage-item {
  display: flex;
  align-items: center;
  gap: 15px;
  padding: 15px 20px;
  background: #F9FAFB;
  border-radius: 10px;
  border-left: 4px solid var(--cyan-deep);
  transition: all 0.3s ease;
}

.advantage-item:hover {
  transform: translateX(10px);
  background: white;
  box-shadow: 0 5px 15px rgba(30, 138, 154, 0.1);
  border-left-color: var(--cyan-light);
}

/* FAQ Section */
.faq {
  background-color: var(--bg-color);
}

.faq-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 30px;
}

.faq-item {
  padding: 30px;
}

.faq-item h3 {
  font-size: 1.1rem;
  margin-bottom: 10px;
  display: flex;
  gap: 10px;
  color: white;
  transition: color 0.3s;
}

.faq-item:hover h3 {
  color: var(--cyan-light);
}

.faq-item p {
  color: rgba(255, 255, 255, 0.9);
  padding-left: 30px;
}

.faq-icon {
  color: var(--cyan-light);
  font-weight: bold;
}

/* Recommendation */
.recommendation {
  background: white;
}

.recommendation-banner {
  border-radius: 20px;
  overflow: hidden;
  position: relative;
  min-height: 400px;
  display: flex;
  align-items: center;
  padding: 40px;
  background-image: url('generated_images/18_family_car.png');
  background-size: cover;
  background-position: center;
}

.recommend-content {
  position: relative;
  z-index: 1;
  max-width: 500px;
  padding: 30px;
}

@media (max-width: 768px) {
  .faq-grid {
    grid-template-columns: 1fr;
  }

  .process-grid {
    grid-template-columns: 1fr;
  }

  .feature-item,
  .feature-item:nth-child(even) {
    flex-direction: column;
  }
}

/* Footer & Navigation */
footer {
  background: linear-gradient(135deg, #0F172A 0%, #1E293B 100%);
  color: white;
  padding: 80px 0 30px;
  position: relative;
}

.footer-content {
  display: grid;
  grid-template-columns: 1fr 2fr 1fr;
  gap: 40px;
}

.footer-nav h3,
.footer-contact h3 {
  color: white;
  margin-bottom: 20px;
  font-size: 1.2rem;
  position: relative;
  display: inline-block;
}

.footer-nav h3::after,
.footer-contact h3::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -5px;
  width: 50%;
  height: 2px;
  background: var(--cyan-deep);
}

.footer-nav ul {
  list-style: none;
  padding: 0;
}

.footer-nav ul li {
  margin-bottom: 12px;
}

.footer-nav ul li a {
  color: #9CA3AF;
  text-decoration: none;
  transition: all 0.3s ease;
  display: inline-block;
}

.footer-nav ul li a:hover {
  color: var(--cyan-light);
  transform: translateX(5px);
}

.footer-contact p {
  color: #9CA3AF;
  margin-bottom: 10px;
}

.footer-btn {
  padding: 10px 20px;
  font-size: 0.9rem;
}

.footer-btn:hover {
  background: var(--cyan-deep);
  border-color: var(--cyan-deep);
  color: white;
}

@media (max-width: 900px) {
  .footer-content {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .footer-nav h3::after,
  .footer-contact h3::after {
    left: 25%;
  }
}

/* Animations */
.fade-up-element {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.fade-up-element.animate-in {
  opacity: 1;
  transform: translateY(0);
}

.interactive-card {
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.interactive-card:hover {
  transform: translateY(-10px) scale(1.05);
  box-shadow: 0 20px 40px rgba(30, 138, 154, 0.4), inset 0 0 0 1px rgba(255, 255, 255, 0.5);
  z-index: 10;
}

/* Fixed Bottom Navigation */
.fixed-bottom-nav {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  width: 90%;
  max-width: 800px;
  padding: 10px 20px;
  border-radius: 40px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 1000;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2), inset 0 0 0 1px rgba(255, 255, 255, 0.2);
  background: linear-gradient(135deg, rgba(128, 229, 240, 0.8) 0%, rgba(30, 138, 154, 0.9) 100%);
}

.bottom-nav-list {
  display: flex;
  list-style: none;
  gap: 20px;
  margin: 0;
  padding: 0;
  overflow-x: auto;
  scrollbar-width: none;
  /* Firefox */
}

.bottom-nav-list::-webkit-scrollbar {
  display: none;
  /* Chrome/Safari */
}

.bottom-nav-list li a {
  color: white;
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  white-space: nowrap;
  padding: 5px 10px;
  border-radius: 20px;
  transition: background 0.3s;
}

.bottom-nav-list li a:hover {
  background: rgba(255, 255, 255, 0.2);
}

.nav-action-btn {
  padding: 8px 20px;
  border-radius: 30px;
  font-size: 0.95rem;
  white-space: nowrap;
  flex-shrink: 0;
}

@media (max-width: 768px) {
  .fixed-bottom-nav {
    width: 95%;
    bottom: 10px;
    padding: 8px 15px;
  }

  .bottom-nav-list {
    gap: 15px;
  }

  .bottom-nav-list li a {
    font-size: 0.85rem;
    padding: 4px 8px;
  }

  .nav-action-btn {
    padding: 6px 15px;
    font-size: 0.85rem;
  }
}