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

:root {
  --container: 1180px;
  --blue-primary: #0066cc;
  --blue-dark: #002966;
  --blue-light: #e6f0ff;
  --white: #ffffff;
  --gray-light: #f5f5f5;
  --gray-medium: #d0d0d0;
  --gray-dark: #666666;
  --text-primary: #111111;
  --text-secondary: #666666;
  --green-success: #10b981;
  --border-color: #e0e0e0;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.15);
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  color: var(--text-primary);
  background-color: #fafafa;
  line-height: 1.6;
}

.container {
  width: min(100% - 32px, var(--container));
  margin-inline: auto;
}

/* Image Base Styles */
img {
  max-width: 100%;
  height: auto;
  display: block;
}

.image-box,
.visual-frame,
.gallery-card,
.detail-image,
.radar-background {
  overflow: visible;
  line-height: 0;
}

.image-box img,
.visual-frame img,
.gallery-card img,
.detail-image img,
.radar-background img {
  max-width: 100%;
  height: auto;
  object-fit: contain;
}

/* Floating Header */
.floating-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background-color: rgba(255, 255, 255, 0);
  backdrop-filter: blur(0);
  transition: all 0.3s ease;
}

.floating-header.scrolled {
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-md);
}

.navbar {
  height: 70px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.navbar-brand {
  font-size: 24px;
  font-weight: 700;
  color: var(--blue-primary);
}

.brand-text {
  letter-spacing: -0.5px;
}

.navbar-menu {
  display: flex;
  list-style: none;
  gap: 40px;
  flex: 1;
  justify-content: center;
}

.navbar-menu a {
  color: var(--text-primary);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: color 0.3s ease;
}

.navbar-menu a:hover {
  color: var(--blue-primary);
}

.navbar-actions {
  display: flex;
  align-items: center;
}

.security-alert-btn {
  background: linear-gradient(135deg, #ff6b6b 0%, #ee5a52 100%);
  color: white;
  border: none;
  padding: 8px 16px;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: transform 0.2s ease;
}

.security-alert-btn:hover {
  transform: translateY(-2px);
}

.alert-icon {
  font-size: 16px;
}

.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
}

.mobile-menu-toggle span {
  width: 24px;
  height: 2px;
  background-color: var(--text-primary);
  transition: all 0.3s ease;
}

/* Hero Section */
.hero-section {
  padding-top: 90px;
  padding-bottom: 60px;
  background: linear-gradient(135deg, var(--blue-light) 0%, #ffffff 50%, #f0f4ff 100%);
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  margin-bottom: 60px;
}

.hero-text {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.hero-title {
  font-size: 42px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--text-primary);
}

.hero-description {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.8;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.btn {
  padding: 12px 28px;
  font-size: 15px;
  font-weight: 600;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
  display: inline-block;
  text-align: center;
}

.btn-primary {
  background: linear-gradient(135deg, var(--blue-primary) 0%, #0052a3 100%);
  color: white;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  background: white;
  color: var(--blue-primary);
  border: 2px solid var(--blue-primary);
}

.btn-secondary:hover {
  background: var(--blue-light);
}

.hero-alert {
  display: flex;
  align-items: center;
  gap: 12px;
  background: rgba(255, 107, 107, 0.1);
  padding: 12px 16px;
  border-radius: 6px;
  border-left: 4px solid #ff6b6b;
}

.alert-badge {
  font-weight: 600;
  color: #ff6b6b;
  font-size: 12px;
}

.alert-message {
  font-size: 13px;
  color: var(--text-secondary);
}

/* Radar Container */
.hero-radar {
  display: flex;
  align-items: center;
  justify-content: center;
}

.radar-container {
  position: relative;
  width: 100%;
  max-width: 400px;
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

.radar-rings {
  position: absolute;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  border: 2px solid var(--blue-primary);
  opacity: 0.3;
  box-shadow:
    inset 0 0 0 40px rgba(0, 102, 204, 0.05),
    inset 0 0 0 80px rgba(0, 102, 204, 0.02),
    0 0 30px rgba(0, 102, 204, 0.1);
}

.radar-rings::before {
  content: '';
  position: absolute;
  width: 70%;
  height: 70%;
  border-radius: 50%;
  border: 2px solid var(--blue-primary);
  opacity: 0.25;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.radar-rings::after {
  content: '';
  position: absolute;
  width: 40%;
  height: 40%;
  border-radius: 50%;
  border: 2px solid var(--blue-primary);
  opacity: 0.2;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.radar-background {
  position: absolute;
  width: 95%;
  height: 95%;
  border-radius: 50%;
  overflow: hidden;
  z-index: 1;
  line-height: 0;
}

.radar-bg-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
}

.radar-center {
  position: relative;
  z-index: 3;
  width: 120px;
  height: 120px;
  background: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
  border: 3px solid var(--blue-primary);
}

.radar-logo {
  width: 80px;
  height: 80px;
  object-fit: contain;
}

.radar-node {
  position: absolute;
  width: 80px;
  height: 80px;
  background: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  border: 2px solid var(--blue-primary);
  cursor: pointer;
  transition: all 0.3s ease;
  z-index: 2;
}

.radar-node:hover {
  transform: scale(1.1);
  box-shadow: var(--shadow-lg);
}

.radar-node-1 { top: -40px; left: 50%; transform: translateX(-50%); }
.radar-node-2 { top: 50%; right: -40px; transform: translateY(-50%); }
.radar-node-3 { bottom: -40px; left: 50%; transform: translateX(-50%); }
.radar-node-4 { top: 50%; left: -40px; transform: translateY(-50%); }

.node-label {
  font-weight: 600;
  font-size: 13px;
  color: var(--blue-primary);
}

/* Hero Stats */
.hero-stats {
  padding: 40px 0;
  border-top: 1px solid var(--border-color);
}

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

.stat-card {
  padding: 20px;
  background: white;
  border-radius: 8px;
  text-align: center;
  transition: all 0.3s ease;
  border: 1px solid var(--border-color);
}

.stat-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.stat-icon {
  font-size: 32px;
  margin-bottom: 12px;
}

.stat-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.stat-text {
  font-size: 13px;
  color: var(--text-secondary);
}

/* Section Title */
.section-title {
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 40px;
  text-align: center;
  color: var(--text-primary);
}

section {
  padding: 60px 0;
}

section:nth-child(odd) {
  background: #fafafa;
}

section:nth-child(even) {
  background: white;
}

/* Radar Nodes Section */
.radar-nodes-section {
}

.nodes-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 60px;
}

.node-card {
  background: white;
  border: 2px solid var(--border-color);
  border-radius: 8px;
  padding: 24px;
  cursor: pointer;
  transition: all 0.3s ease;
}

.node-card:hover {
  border-color: var(--blue-primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.node-card.active {
  border-color: var(--blue-primary);
  background: var(--blue-light);
}

.node-card-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.node-number {
  font-size: 24px;
  font-weight: 700;
  color: var(--blue-primary);
}

.node-title {
  font-size: 18px;
  font-weight: 600;
}

.node-card-description {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.node-card-action {
  font-size: 13px;
  font-weight: 600;
  color: var(--blue-primary);
  opacity: 0;
  transition: all 0.3s ease;
}

.node-card:hover .node-card-action {
  opacity: 1;
}

.node-detail-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
  padding: 40px;
  background: white;
  border-radius: 12px;
  border: 1px solid var(--border-color);
}

.node-detail {
  display: none;
}

.node-detail.active {
  display: contents;
}

.detail-text h3 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--text-primary);
}

.detail-text p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 12px;
}

.detail-image {
  border-radius: 8px;
  overflow: hidden;
  box-shadow: var(--shadow-md);
  line-height: 0;
}

.detail-image img {
  width: 100%;
  height: auto;
  object-fit: contain;
}

/* Account Panel / Bento Grid */
.account-panel-section {
}

.bento-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 24px;
  grid-auto-rows: 300px;
}

.bento-card {
  background: white;
  border-radius: 12px;
  padding: 28px;
  border: 1px solid var(--border-color);
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.bento-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
  border-color: var(--blue-primary);
}

.bento-1 { grid-column: span 6; grid-row: span 2; }
.bento-2 { grid-column: span 3; grid-row: span 1; }
.bento-3 { grid-column: span 3; grid-row: span 1; }
.bento-4 { grid-column: span 2; grid-row: span 1; }
.bento-5 { grid-column: span 2; grid-row: span 1; }
.bento-6 { grid-column: span 2; grid-row: span 1; }

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.card-header h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
}

.card-badge {
  display: inline-block;
  background: var(--blue-light);
  color: var(--blue-primary);
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 600;
}

.card-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.card-content p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.card-image {
  flex: 1;
  border-radius: 6px;
  overflow: hidden;
  margin-top: auto;
  line-height: 0;
}

.card-image img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

/* Asset Path Section */
.asset-path-section {
}

.path-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 40px;
  background: white;
  border-radius: 12px;
  border: 1px solid var(--border-color);
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.path-point {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  position: relative;
  flex: 0 0 auto;
}

.path-point:hover {
  cursor: pointer;
}

.path-point[data-tooltip]::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: -50px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--text-primary);
  color: white;
  padding: 8px 12px;
  border-radius: 4px;
  font-size: 12px;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
  z-index: 10;
}

.path-point:hover::after {
  opacity: 1;
}

.path-dot {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--blue-primary) 0%, #0052a3 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 700;
  box-shadow: var(--shadow-md);
}

.path-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
}

.path-line {
  flex: 0 0 auto;
  width: 40px;
  height: 3px;
  background: linear-gradient(to right, var(--blue-primary), transparent);
  margin: 0 -10px;
}

.path-image {
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow-md);
  line-height: 0;
}

.path-image img {
  width: 100%;
  height: auto;
  object-fit: contain;
}

/* Security Check Section */
.security-check-section {
}

.security-layout {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 40px;
  background: white;
  border-radius: 12px;
  border: 1px solid var(--border-color);
  overflow: hidden;
}

.security-checklist {
  padding: 0;
}

.check-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px;
  border-bottom: 1px solid var(--border-color);
  cursor: pointer;
  transition: all 0.3s ease;
  background: white;
}

.check-item:hover {
  background: var(--blue-light);
}

.check-item.active {
  background: var(--blue-light);
  border-left: 4px solid var(--blue-primary);
  padding-left: 16px;
}

.check-number {
  font-size: 20px;
  font-weight: 700;
  color: var(--blue-primary);
  flex-shrink: 0;
}

.check-content h4 {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.check-description {
  font-size: 12px;
  color: var(--text-secondary);
}

.security-detail {
  padding: 40px;
}

.detail-panel {
  display: none;
}

.detail-panel.active {
  display: block;
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.detail-panel h3 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--text-primary);
}

.detail-body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}

.detail-explanation {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.detail-explanation p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
}

.detail-explanation ul {
  list-style: disc;
  margin-left: 20px;
  font-size: 14px;
  color: var(--text-secondary);
}

.detail-explanation li {
  margin-bottom: 8px;
}

.detail-visual {
  border-radius: 8px;
  overflow: hidden;
  line-height: 0;
}

.detail-visual img {
  width: 100%;
  height: auto;
  object-fit: contain;
}

/* Interface Gallery */
.interface-gallery-section {
}

.gallery-viewport {
  position: relative;
  overflow: hidden;
  border-radius: 12px;
  margin-bottom: 20px;
}

.gallery-track {
  display: flex;
  gap: 20px;
  overflow-x: auto;
  scroll-behavior: smooth;
  scroll-snap-type: x mandatory;
  padding: 20px;
  background: white;
  border: 1px solid var(--border-color);
}

.gallery-track::-webkit-scrollbar {
  height: 6px;
}

.gallery-track::-webkit-scrollbar-track {
  background: var(--gray-light);
}

.gallery-track::-webkit-scrollbar-thumb {
  background: var(--blue-primary);
  border-radius: 3px;
}

.gallery-item {
  flex: 0 0 auto;
  scroll-snap-align: start;
  cursor: pointer;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all 0.3s ease;
}

.gallery-item:hover {
  transform: scale(1.02);
  box-shadow: var(--shadow-md);
}

.gallery-item img {
  display: block;
  max-width: 300px;
  height: auto;
  object-fit: contain;
}

.gallery-controls {
  display: flex;
  gap: 12px;
  justify-content: center;
}

.gallery-prev,
.gallery-next {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--blue-primary);
  color: white;
  border: none;
  cursor: pointer;
  font-size: 18px;
  font-weight: 700;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

.gallery-prev:hover,
.gallery-next:hover {
  background: var(--blue-dark);
  transform: scale(1.05);
}

/* Use Cases Section */
.use-cases-section {
}

.use-cases-layout {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 40px;
  background: white;
  border-radius: 12px;
  border: 1px solid var(--border-color);
  padding: 0;
  overflow: hidden;
}

.use-cases-list {
  padding: 0;
}

.use-case-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 24px;
  border-bottom: 1px solid var(--border-color);
  cursor: pointer;
  transition: all 0.3s ease;
  background: white;
}

.use-case-item:hover {
  background: var(--blue-light);
}

.use-case-item.active {
  background: var(--blue-light);
  border-left: 4px solid var(--blue-primary);
  padding-left: 20px;
}

.case-number {
  font-size: 18px;
  font-weight: 700;
  color: var(--blue-primary);
  flex-shrink: 0;
}

.case-question {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
}

.use-cases-answer {
  padding: 40px;
}

.answer-content {
  display: none;
}

.answer-content.active {
  display: block;
  animation: fadeIn 0.3s ease;
}

.answer-content h3 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--text-primary);
}

.answer-content p {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 12px;
  line-height: 1.8;
}

.answer-content ul {
  list-style: disc;
  margin-left: 20px;
  font-size: 14px;
  color: var(--text-secondary);
}

.answer-content li {
  margin-bottom: 8px;
}

/* Operation Confirm */
.operation-confirm-section {
}

.confirmation-checklist {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
  background: white;
  padding: 40px;
  border-radius: 12px;
  border: 1px solid var(--border-color);
  margin-bottom: 20px;
}

.confirm-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.confirm-checkbox {
  width: 24px;
  height: 24px;
  cursor: pointer;
  flex-shrink: 0;
  accent-color: var(--blue-primary);
  margin-top: 2px;
}

.confirm-item label {
  display: flex;
  flex-direction: column;
  gap: 4px;
  cursor: pointer;
  flex: 1;
}

.confirm-icon {
  display: none;
}

.confirm-checkbox:checked ~ label .confirm-icon {
  display: inline;
  color: var(--green-success);
}

.confirm-label {
  font-weight: 600;
  color: var(--text-primary);
  font-size: 14px;
}

.confirm-desc {
  font-size: 12px;
  color: var(--text-secondary);
}

.confirmation-message {
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.2);
  border-left: 4px solid var(--green-success);
  padding: 20px;
  border-radius: 8px;
  animation: slideDown 0.3s ease;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.message-text {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.6;
}

/* FAQ Section */
.faq-section {
}

.faq-list {
  display: grid;
  gap: 12px;
  background: white;
  border-radius: 12px;
  border: 1px solid var(--border-color);
  padding: 0;
  overflow: hidden;
}

.faq-item {
  border-bottom: 1px solid var(--border-color);
}

.faq-item:last-child {
  border-bottom: none;
}

.faq-question {
  padding: 24px;
  cursor: pointer;
  font-weight: 600;
  font-size: 16px;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: all 0.3s ease;
  background: white;
  user-select: none;
}

.faq-question:hover {
  background: var(--blue-light);
  color: var(--blue-primary);
}

.faq-question::after {
  content: '▼';
  font-size: 12px;
  transition: transform 0.3s ease;
}

.faq-item.open .faq-question {
  background: var(--blue-light);
  color: var(--blue-primary);
}

.faq-item.open .faq-question::after {
  transform: rotate(-180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.faq-item.open .faq-answer {
  max-height: 1000px;
}

.faq-answer {
  padding: 0 24px;
  background: white;
}

.faq-item.open .faq-answer {
  padding: 0 24px 24px 24px;
}

.faq-answer p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 12px;
}

.faq-answer ul {
  list-style: disc;
  margin-left: 20px;
  font-size: 14px;
  color: var(--text-secondary);
}

.faq-answer li {
  margin-bottom: 8px;
}

/* Footer */
.footer {
  background: var(--text-primary);
  color: white;
  padding: 60px 0 20px;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
  margin-bottom: 40px;
}

.footer-section h3,
.footer-section h4 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 16px;
}

.footer-brand h3 {
  font-size: 24px;
  color: var(--blue-primary);
}

.footer-tagline {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 12px;
}

.footer-description {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.6;
}

.footer-links ul,
.footer-safety ul {
  list-style: none;
}

.footer-links li,
.footer-safety li {
  margin-bottom: 8px;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  font-size: 13px;
  transition: color 0.3s ease;
}

.footer-links a:hover {
  color: var(--blue-primary);
}

.footer-safety li {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.7);
}

.legal-disclaimer {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.6);
  line-height: 1.6;
}

.footer-bottom {
  text-align: center;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-copyright {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.5);
}

/* Image Preview Modal */
.image-preview-modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.9);
  z-index: 2000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.image-preview-modal.active {
  display: flex;
}

.modal-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  cursor: pointer;
}

.modal-content {
  position: relative;
  z-index: 2001;
  max-width: 90vw;
  max-height: 90vh;
  background: white;
  border-radius: 8px;
  overflow: hidden;
  line-height: 0;
}

.modal-content img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  max-width: 90vw;
  max-height: 90vh;
}

.modal-close {
  position: absolute;
  top: 20px;
  right: 20px;
  width: 40px;
  height: 40px;
  background: rgba(0, 0, 0, 0.7);
  color: white;
  border: none;
  border-radius: 50%;
  font-size: 24px;
  cursor: pointer;
  z-index: 2002;
  transition: all 0.3s ease;
}

.modal-close:hover {
  background: rgba(0, 0, 0, 0.9);
}

/* Back to Top Button */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 50px;
  height: 50px;
  background: var(--blue-primary);
  color: white;
  border: none;
  border-radius: 50%;
  font-size: 20px;
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transition: all 0.3s ease;
  z-index: 999;
}

.back-to-top.show {
  opacity: 1;
  pointer-events: all;
}

.back-to-top:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  background: var(--blue-dark);
}

/* Responsive Design */
@media (max-width: 1024px) {
  :root {
    --container: 95%;
  }

  .hero-content {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .hero-radar {
    max-width: 300px;
  }

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

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

  .node-detail-container {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .bento-grid {
    grid-auto-rows: 280px;
  }

  .bento-1 { grid-column: span 12; }
  .bento-2 { grid-column: span 4; }
  .bento-3 { grid-column: span 4; }
  .bento-4 { grid-column: span 4; }
  .bento-5 { grid-column: span 4; }
  .bento-6 { grid-column: span 4; }

  .security-layout {
    grid-template-columns: 1fr;
  }

  .use-cases-layout {
    grid-template-columns: 1fr;
  }

  .detail-body {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 768px) {
  .navbar-menu {
    display: none;
    position: absolute;
    top: 70px;
    left: 0;
    right: 0;
    flex-direction: column;
    background: white;
    border-bottom: 1px solid var(--border-color);
    gap: 0;
    width: 100%;
    padding: 0;
  }

  .navbar-menu.open {
    display: flex;
  }

  .navbar-menu li {
    border-bottom: 1px solid var(--border-color);
  }

  .navbar-menu a {
    display: block;
    padding: 16px 24px;
  }

  .mobile-menu-toggle {
    display: flex;
  }

  .hero-title {
    font-size: 28px;
  }

  .hero-description {
    font-size: 15px;
  }

  .hero-buttons {
    flex-direction: column;
  }

  .btn {
    width: 100%;
  }

  .section-title {
    font-size: 24px;
    margin-bottom: 28px;
  }

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

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

  .path-container {
    flex-direction: column;
    gap: 20px;
  }

  .path-line {
    width: 3px;
    height: 40px;
    margin: 0;
  }

  .security-checklist {
    max-height: 300px;
    overflow-y: auto;
  }

  .confirmation-checklist {
    grid-template-columns: 1fr;
  }

  .footer-content {
    grid-template-columns: 1fr;
  }

  .gallery-item img {
    max-width: 200px;
  }

  .back-to-top {
    bottom: 20px;
    right: 20px;
    width: 44px;
    height: 44px;
    font-size: 18px;
  }
}

@media (max-width: 480px) {
  .container {
    width: calc(100% - 20px);
  }

  .hero-title {
    font-size: 22px;
  }

  .hero-alert {
    flex-direction: column;
    align-items: flex-start;
  }

  .node-card-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .bento-grid {
    grid-template-columns: 1fr;
    grid-auto-rows: auto;
  }

  .bento-1,
  .bento-2,
  .bento-3,
  .bento-4,
  .bento-5,
  .bento-6 {
    grid-column: span 1;
    grid-row: auto;
    min-height: 250px;
  }

  .check-item {
    padding: 16px;
  }

  .faq-question {
    padding: 16px;
    font-size: 14px;
  }

  .footer-section h3,
  .footer-section h4 {
    font-size: 14px;
  }

  .section-title {
    font-size: 20px;
  }
}