:root {
  --container: 1180px;
  --primary: #0052ff;
  --secondary: #f7f8fa;
  --text-dark: #1c1c1c;
  --text-light: #666;
  --border: #e4e4e7;
  --success: #00d084;
  --warning: #ff6b6b;
  --white: #ffffff;
  --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 24px rgba(0, 0, 0, 0.16);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-dark);
  background: var(--white);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

.image-box,
.media-frame,
.screen-card,
.gallery-item,
.tab-image,
.asset-image-box,
.dashboard-card,
.detail-image {
  overflow: visible;
  line-height: 0;
}

.image-box img,
.media-frame img,
.screen-card img,
.gallery-item img,
.tab-image img,
.asset-image-box img,
.dashboard-card img,
.detail-image img {
  max-width: 100%;
  height: auto;
  object-fit: contain;
}

.container {
  width: min(100% - 32px, var(--container));
  margin-inline: auto;
  padding: 0 16px;
}

/* Navigation */
.nav-bar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: all 0.3s ease;
}

.nav-bar.active {
  background: rgba(255, 255, 255, 0.95);
  border-bottom-color: var(--border);
  box-shadow: var(--shadow-sm);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  width: min(100% - 32px, var(--container));
  margin: 0 auto;
  padding: 0 16px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  color: var(--text-dark);
  font-weight: 700;
  font-size: 18px;
}

.nav-logo {
  width: 64px;
  height: 64px;
  object-fit: contain;
}


.nav-menu {
  display: flex;
  gap: 32px;
  align-items: center;
}

.nav-link {
  text-decoration: none;
  color: var(--text-light);
  font-size: 14px;
  font-weight: 500;
  transition: color 0.3s ease;
  position: relative;
}

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: width 0.3s ease;
}

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

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  flex-direction: column;
  gap: 5px;
  width: 24px;
  height: 24px;
}

.nav-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--text-dark);
  transition: all 0.3s ease;
  border-radius: 1px;
}

/* Hero Section */
.hero {
  padding: 120px 0 80px;
  margin-top: 64px;
  background: linear-gradient(135deg, #f7f8fa 0%, #ffffff 100%);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  margin-bottom: 80px;
}

.hero h1 {
  font-size: 48px;
  line-height: 1.3;
  margin-bottom: 24px;
  color: var(--text-dark);
  font-weight: 700;
}

.hero-desc {
  font-size: 16px;
  color: var(--text-light);
  line-height: 1.8;
  margin-bottom: 32px;
  max-width: 500px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  margin-bottom: 24px;
}

.btn {
  padding: 12px 32px;
  border-radius: 8px;
  border: none;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
}

.btn-primary {
  background: var(--primary);
  color: white;
}

.btn-primary:hover {
  background: #0043cc;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

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

.btn-secondary:hover {
  background: var(--primary);
  color: white;
}

.hero-warning {
  display: flex;
  align-items: center;
  gap: 12px;
  background: rgba(255, 107, 107, 0.08);
  padding: 12px 16px;
  border-radius: 6px;
  font-size: 13px;
  color: var(--warning);
}

.warning-icon {
  font-size: 16px;
  flex-shrink: 0;
}

.dashboard-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
  box-shadow: var(--shadow-sm);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}

.card-title {
  font-weight: 600;
  font-size: 14px;
  color: var(--text-dark);
}

.card-status {
  font-size: 10px;
  color: var(--success);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

.card-metrics {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 20px;
}

.metric {
  display: flex;
  flex-direction: column;
}

.metric-label {
  font-size: 12px;
  color: var(--text-light);
  margin-bottom: 4px;
}

.metric-value {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-dark);
}

.card-image-wrapper {
  overflow: visible;
  line-height: 0;
  border-radius: 8px;
}

.dashboard-image {
  width: 100%;
  height: auto;
  object-fit: contain;
  border-radius: 8px;
}

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

.metric-card {
  background: var(--white);
  border: 1px solid var(--border);
  padding: 24px;
  border-radius: 8px;
  display: flex;
  align-items: flex-start;
  gap: 16px;
  transition: all 0.3s ease;
}

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

.metric-icon {
  font-size: 32px;
  flex-shrink: 0;
}

.metric-info h3 {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 6px;
}

.metric-info p {
  font-size: 12px;
  color: var(--text-light);
  line-height: 1.5;
}

/* Task Flow */
.task-flow {
  padding: 80px 0;
  background: var(--secondary);
}

.task-flow h2 {
  font-size: 36px;
  margin-bottom: 60px;
  text-align: center;
}

.flow-track {
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: relative;
}

.flow-track::before {
  content: '';
  position: absolute;
  top: 30px;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--border);
  z-index: 0;
}

.flow-node {
  position: relative;
  z-index: 1;
  text-align: center;
  flex: 1;
  padding: 0 12px;
  cursor: pointer;
  transition: all 0.3s ease;
}

.node-number {
  width: 60px;
  height: 60px;
  margin: 0 auto 16px;
  background: var(--white);
  border: 2px solid var(--border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 700;
  color: var(--text-light);
  transition: all 0.3s ease;
}

.flow-node:hover .node-number {
  border-color: var(--primary);
  color: var(--primary);
  transform: scale(1.1);
  box-shadow: 0 0 0 3px rgba(0, 82, 255, 0.1);
}

.node-title {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 6px;
}

.node-desc {
  font-size: 12px;
  color: var(--text-light);
  line-height: 1.4;
}

.flow-connector {
  flex: 1;
  height: 0;
  border-top: 1px solid var(--border);
  margin: 0 -6px;
  position: relative;
  z-index: 0;
}

/* Console Section */
.console-section {
  padding: 80px 0;
  background: var(--white);
}

.console-section h2 {
  font-size: 36px;
  margin-bottom: 60px;
}

.console-grid {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 40px;
  min-height: 500px;
}

.console-sidebar {
  padding: 24px;
  background: var(--secondary);
  border-radius: 12px;
  height: fit-content;
  position: sticky;
  top: 100px;
}

.menu-title {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-light);
  margin-bottom: 16px;
}

.menu-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.menu-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: transparent;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-light);
  transition: all 0.3s ease;
  text-align: left;
}

.menu-item:hover {
  background: rgba(0, 82, 255, 0.06);
  color: var(--primary);
}

.menu-item.active {
  background: var(--primary);
  color: white;
}

.menu-icon {
  font-size: 16px;
  flex-shrink: 0;
}

.console-content {
  position: relative;
}

.tab-panel {
  display: none;
  animation: fadeIn 0.3s ease;
}

.tab-panel.active {
  display: block;
}

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

.tab-panel h3 {
  font-size: 24px;
  margin-bottom: 16px;
  color: var(--text-dark);
}

.tab-panel > p {
  font-size: 14px;
  color: var(--text-light);
  margin-bottom: 24px;
  line-height: 1.8;
}

.info-points {
  list-style: none;
  margin-bottom: 32px;
}

.info-points li {
  padding: 12px 0;
  padding-left: 24px;
  position: relative;
  font-size: 14px;
  color: var(--text-dark);
}

.info-points li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--primary);
  font-weight: bold;
}

.tab-image {
  margin-top: 32px;
  overflow: visible;
  line-height: 0;
  border-radius: 8px;
}

.tab-image img {
  width: 100%;
  height: auto;
  object-fit: contain;
  border-radius: 8px;
}

/* Asset Management */
.asset-management {
  padding: 80px 0;
  background: var(--secondary);
}

.asset-management h2 {
  font-size: 36px;
  margin-bottom: 60px;
}

.asset-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.asset-image-box {
  overflow: visible;
  line-height: 0;
  border-radius: 12px;
}

.asset-image-box img {
  width: 100%;
  height: auto;
  object-fit: contain;
  border-radius: 12px;
}

.asset-cards {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.asset-card {
  background: var(--white);
  padding: 24px;
  border-radius: 8px;
  border-left: 4px solid var(--primary);
  transition: all 0.3s ease;
  position: relative;
  z-index: 1;
}

.asset-card.card-1 {
  margin-top: 0;
}

.asset-card.card-2 {
  margin-top: 12px;
  z-index: 2;
}

.asset-card.card-3 {
  margin-top: 12px;
  z-index: 3;
}

.asset-card.card-4 {
  margin-top: 12px;
  z-index: 4;
}

.asset-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateX(8px);
}

.asset-card h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-dark);
}

.asset-card p {
  font-size: 13px;
  color: var(--text-light);
  line-height: 1.6;
}

/* Security Section */
.security-section {
  padding: 80px 0;
  background: var(--white);
}

.security-section h2 {
  font-size: 36px;
  margin-bottom: 60px;
}

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

.security-list {
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  background: linear-gradient(135deg, #1c3a70 0%, #2c5aa0 100%);
}

.security-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 6px;
  cursor: pointer;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.8);
  transition: all 0.3s ease;
}

.security-item:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.4);
}

.security-item.active {
  background: var(--primary);
  border-color: var(--primary);
  color: white;
}

.security-num {
  display: inline-block;
  min-width: 28px;
  font-weight: 700;
  font-size: 12px;
}

.security-detail {
  padding: 40px;
  position: relative;
}

.detail-box {
  display: none;
}

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

.detail-box h3 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--text-dark);
}

.detail-box > p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.8;
  margin-bottom: 24px;
}

.detail-image {
  margin-top: 24px;
  overflow: visible;
  line-height: 0;
  border-radius: 8px;
}

.detail-image img {
  width: 100%;
  height: auto;
  object-fit: contain;
  border-radius: 8px;
}

/* Scenarios */
.scenarios {
  padding: 80px 0;
  background: var(--secondary);
}

.scenarios h2 {
  font-size: 36px;
  margin-bottom: 60px;
  text-align: center;
}

.scenarios-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.scenario-card {
  background: var(--white);
  padding: 32px;
  border-radius: 8px;
  border: 1px solid var(--border);
  transition: all 0.3s ease;
}

.scenario-card:nth-child(2) {
  margin-top: 24px;
}

.scenario-card:nth-child(3) {
  margin-top: 48px;
}

.scenario-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-lg);
  transform: translateY(-8px);
}

.scenario-icon {
  font-size: 40px;
  margin-bottom: 16px;
  display: block;
}

.scenario-card h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--text-dark);
}

.scenario-card p {
  font-size: 13px;
  color: var(--text-light);
  line-height: 1.6;
}

/* Gallery */
.gallery {
  padding: 80px 0;
  background: var(--white);
}

.gallery h2 {
  font-size: 36px;
  margin-bottom: 60px;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 40px;
}

.gallery-item {
  position: relative;
  overflow: hidden;
  border-radius: 8px;
  cursor: pointer;
  border: 1px solid var(--border);
  transition: all 0.3s ease;
  line-height: 0;
}

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

.gallery-item img {
  width: 100%;
  height: auto;
  object-fit: contain;
  display: block;
  transition: transform 0.3s ease;
}

.gallery-item:hover img {
  transform: scale(1.05);
}

/* Image Modal */
.image-modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 200;
}

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

.modal-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.8);
  cursor: pointer;
}

.modal-content {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
}

.modal-close {
  position: absolute;
  top: 20px;
  right: 20px;
  width: 40px;
  height: 40px;
  background: rgba(255, 255, 255, 0.2);
  border: none;
  border-radius: 50%;
  color: white;
  font-size: 28px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  z-index: 10;
}

.modal-close:hover {
  background: rgba(255, 255, 255, 0.4);
}

.modal-prev,
.modal-next {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 50px;
  height: 50px;
  background: rgba(255, 255, 255, 0.2);
  border: none;
  color: white;
  font-size: 24px;
  cursor: pointer;
  border-radius: 4px;
  transition: all 0.3s ease;
  z-index: 10;
}

.modal-prev:hover,
.modal-next:hover {
  background: rgba(255, 255, 255, 0.4);
}

.modal-prev {
  left: 20px;
}

.modal-next {
  right: 20px;
}

.modal-image-wrapper {
  max-width: 90%;
  max-height: 90%;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 0;
}

.modal-image {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}

.modal-counter {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  color: rgba(255, 255, 255, 0.8);
  font-size: 14px;
  z-index: 10;
}

/* Checklist */
.checklist {
  padding: 80px 0;
  background: var(--secondary);
}

.checklist h2 {
  font-size: 36px;
  margin-bottom: 60px;
  text-align: center;
}

.checklist-box {
  background: var(--white);
  border-radius: 12px;
  padding: 40px;
  box-shadow: var(--shadow-md);
}

.checklist-items {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 32px;
}

.checklist-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  cursor: pointer;
  padding: 16px;
  border-radius: 6px;
  transition: background 0.3s ease;
}

.checklist-item:hover {
  background: var(--secondary);
}

.checklist-input {
  width: 20px;
  height: 20px;
  cursor: pointer;
  margin-top: 2px;
  flex-shrink: 0;
  accent-color: var(--primary);
}

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

.checklist-desc {
  display: block;
  font-size: 12px;
  color: var(--text-light);
  margin-top: 4px;
}

.checklist-status {
  padding: 20px;
  background: var(--secondary);
  border-radius: 6px;
  text-align: center;
  min-height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.status-empty {
  color: var(--text-light);
  font-size: 14px;
}

.status-completed {
  color: var(--success);
  font-size: 16px;
  font-weight: 600;
}

/* FAQ */
.faq {
  padding: 80px 0;
  background: var(--white);
}

.faq h2 {
  font-size: 36px;
  margin-bottom: 60px;
}

.faq-list {
  margin: 0 auto;
}

.faq-item {
  margin-bottom: 16px;
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  transition: all 0.3s ease;
}

.faq-item[open] {
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 20px 24px;
  background: var(--white);
  border: none;
  cursor: pointer;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-dark);
  text-align: left;
  transition: all 0.3s ease;
}

.faq-question:hover {
  background: var(--secondary);
}

.faq-question::marker {
  display: none;
}

.faq-item[open] .faq-question {
  background: var(--secondary);
  color: var(--primary);
}

.faq-answer {
  padding: 20px 24px;
  border-top: 1px solid var(--border);
  background: var(--white);
  animation: slideDown 0.3s ease;
}

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

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

.faq-answer p + p {
  margin-top: 12px;
}

/* Back to Top Button */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 48px;
  height: 48px;
  background: var(--primary);
  color: white;
  border: none;
  border-radius: 50%;
  font-size: 20px;
  cursor: pointer;
  display: none;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  z-index: 50;
}

.back-to-top.show {
  display: flex;
}

.back-to-top:hover {
  background: #0043cc;
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

/* Footer */
.footer {
  background: #1c1c1c;
  color: #ccc;
  padding: 60px 0 20px;
  margin-top: 80px;
}

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

.footer-title {
  font-size: 14px;
  font-weight: 700;
  color: white;
  margin-bottom: 16px;
  text-transform: uppercase;
}

.footer-section p {
  font-size: 13px;
  line-height: 1.6;
}

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

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

.footer-links a {
  color: #999;
  text-decoration: none;
  font-size: 13px;
  transition: color 0.3s ease;
}

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

.footer-tips li {
  font-size: 13px;
  padding-left: 16px;
  position: relative;
}

.footer-tips li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--success);
}

.footer-bottom {
  border-top: 1px solid #333;
  padding-top: 20px;
  text-align: center;
}

.copyright {
  font-size: 12px;
  color: #666;
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--secondary);
}

::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-light);
}

/* Animations */
@keyframes slideInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Responsive */
@media (max-width: 1024px) {
  :root {
    --container: 900px;
  }

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

  .hero h1 {
    font-size: 36px;
  }

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

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

  .scenario-card:nth-child(2) {
    margin-top: 0;
  }

  .scenario-card:nth-child(3) {
    margin-top: 0;
  }

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

  .console-sidebar {
    position: static;
  }

  .asset-layout {
    grid-template-columns: 1fr;
    gap: 40px;
  }

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

  .security-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    padding: 24px;
  }

  .security-item {
    flex-direction: column;
    text-align: center;
  }

  .security-detail {
    padding: 32px;
  }

  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
  }
}

@media (max-width: 768px) {
  :root {
    --container: 100%;
  }

  .nav-menu {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    background: var(--white);
    border-bottom: 1px solid var(--border);
    padding: 16px 0;
    z-index: 99;
  }

  .nav-menu.active {
    display: flex;
  }

  .nav-link {
    padding: 12px 24px;
    display: block;
  }

  .nav-link::after {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-text {
    display: inline;
    margin-left: 8px;
  }

  .hero {
    padding: 100px 0 60px;
  }

  .hero h1 {
    font-size: 28px;
  }

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

  .btn {
    width: 100%;
    text-align: center;
  }

  .hero-metrics {
    grid-template-columns: 1fr;
  }

  .metric-card {
    flex-direction: row;
  }

  .flow-track {
    flex-direction: column;
  }

  .flow-track::before {
    top: 0;
    left: 30px;
    right: auto;
    width: 1px;
    height: 100%;
  }

  .flow-node {
    text-align: left;
    margin-left: 80px;
    padding: 24px 0;
  }

  .flow-connector {
    width: 0;
    height: 20px;
    border: none;
    border-left: 1px solid var(--border);
    margin: 0;
    margin-left: 30px;
  }

  .flow-connector:last-of-type {
    display: none;
  }

  h2 {
    font-size: 28px !important;
    margin-bottom: 40px !important;
  }

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

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

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

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

  .modal-prev,
  .modal-next {
    width: 40px;
    height: 40px;
    font-size: 20px;
  }

  .modal-prev {
    left: 10px;
  }

  .modal-next {
    right: 10px;
  }

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

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

  .footer-section {
    padding-bottom: 20px;
    border-bottom: 1px solid #333;
  }

  .footer-section:last-child {
    border-bottom: none;
  }
}

@media (max-width: 480px) {
  .container {
    width: calc(100% - 16px);
    padding: 0 8px;
  }

  .nav-container {
    padding: 0 8px;
  }

  .hero {
    padding: 80px 0 40px;
    margin-top: 56px;
  }

  .hero h1 {
    font-size: 24px;
  }

  .hero-desc {
    font-size: 14px;
  }

  .hero-grid {
    margin-bottom: 60px;
  }

  .dashboard-card {
    padding: 16px;
  }

  .card-metrics {
    gap: 12px;
  }

  .metric-value {
    font-size: 16px;
  }

  .task-flow {
    padding: 60px 0;
  }

  .flow-track {
    gap: 0;
  }

  .flow-node {
    margin-left: 60px;
  }

  .node-number {
    width: 48px;
    height: 48px;
    font-size: 14px;
  }

  .console-sidebar {
    padding: 16px;
  }

  .menu-item {
    padding: 10px 12px;
    font-size: 13px;
    gap: 8px;
  }

  .console-content {
    padding: 0;
  }

  .tab-panel h3 {
    font-size: 18px;
  }

  .asset-cards {
    gap: 12px;
  }

  .asset-card {
    padding: 16px;
    margin-top: 0 !important;
  }

  .asset-card h3 {
    font-size: 14px;
  }

  .security-panel {
    border-radius: 0;
  }

  .security-list {
    padding: 16px;
  }

  .security-item {
    padding: 12px;
    font-size: 12px;
  }

  .security-detail {
    padding: 16px;
  }

  .detail-box h3 {
    font-size: 18px;
  }

  .scenario-card {
    padding: 20px;
  }

  .scenario-icon {
    font-size: 32px;
  }

  .scenario-card h3 {
    font-size: 14px;
  }

  .checklist-box {
    padding: 20px;
  }

  .checklist-items {
    gap: 16px;
  }

  .checklist-item {
    padding: 12px;
  }

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

  .faq-answer {
    padding: 16px;
  }

  .modal-close {
    width: 36px;
    height: 36px;
    top: 10px;
    right: 10px;
    font-size: 24px;
  }

  .modal-image-wrapper {
    max-width: 95%;
    max-height: 95%;
  }

  .back-to-top {
    width: 40px;
    height: 40px;
    bottom: 16px;
    right: 16px;
    font-size: 16px;
  }

  .copyright {
    font-size: 11px;
  }
}