@import url("https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@300;400;500;600;700&display=swap");

:root {
  --primary-color: #166534;
  --primary-dark: #14532d;
  --primary-light: #4ade80;
  --secondary-color: #ca8a04;
  --text-primary: #1e293b;
  --text-secondary: #6b7280;
  --text-light: #94a3b8;
  --bg-primary: #f0fdf4;
  --bg-secondary: #ffffff;
  --bg-tertiary: #f1f5f9;
  --border-color: #d1d5db;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.12);
  --gradient-primary: linear-gradient(135deg, #166534 0%, #ca8a04 100%);
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
  --border-radius: 6px;
  --border-radius-lg: 10px;
  --border-radius-xl: 14px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  -webkit-font-smoothing: antialiased;
  margin: 0;
  padding: 0;
}

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

a {
  text-decoration: none;
  color: inherit;
  transition: color var(--transition-fast);
}

button {
  border: none;
  background: none;
  cursor: pointer;
  font-family: inherit;
}

.page-container {
  width: 100%;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--bg-secondary);
}

/* Header Styles */
.top-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  z-index: 1000;
  padding: 12px 0;
  width: 100%;
  margin: 0;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.logo-area {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  transition: opacity var(--transition-fast);
}

.logo:hover {
  opacity: 0.85;
}

.logo-icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
}

.logo-text {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 20px;
}

.nav-link {
  padding: 8px 12px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--border-radius);
  transition: all var(--transition-fast);
}

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

.nav-cta-btn {
  padding: 10px 18px;
  font-size: 15px;
  font-weight: 600;
  color: white;
  background: var(--gradient-primary);
  border-radius: var(--border-radius-lg);
  transition: all var(--transition-fast);
}

.nav-cta-btn:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 26px;
  height: 20px;
}

.menu-line {
  width: 100%;
  height: 3px;
  background-color: var(--text-primary);
  border-radius: 2px;
  transition: var(--transition-fast);
}

@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    top: 68px;
    left: 0;
    right: 0;
    background: var(--bg-secondary);
    flex-direction: column;
    align-items: center;
    padding: 16px;
    gap: 8px;
    border-bottom: 1px solid var(--border-color);
    transform: translateY(-150%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
  }

  .nav-menu.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .menu-toggle {
    display: flex;
  }

  .menu-toggle.active .menu-line:nth-child(2) {
    opacity: 0;
  }

  .menu-toggle.active .menu-line:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }

  .menu-toggle.active .menu-line:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }
}

/* Main Content */
.main-content {
  flex: 1;
  margin-top: 72px; /* Account for fixed header */
  width: 100%;
}

/* Hero Section */
.hero-banner {
  padding: 140px 0 80px;
  background: linear-gradient(135deg, #e7f8e9 0%, #f0f9ff 100%);
  scroll-margin-top: 80px;
  width: 100%;
  margin: 0;
}

.hero-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  align-items: center;
}

@media (max-width: 992px) {
  .hero-container {
    grid-template-columns: 1fr;
    text-align: center;
  }
}

.hero-text-section {
  display: flex;
  align-items: flex-start;
  justify-content: center;
}

.hero-content-area {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.main-title {
  font-size: 40px;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 8px;
  color: var(--text-primary);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

@media (max-width: 768px) {
  .main-title {
    font-size: 32px;
  }
}

.subtitle {
  font-size: 18px;
  font-weight: 600;
  color: var(--primary-color);
  margin-bottom: 12px;
}

.description {
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.action-buttons {
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: flex-start;
}

@media (max-width: 992px) {
  .action-buttons {
    align-items: center;
  }
}

.primary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 24px;
  border-radius: var(--border-radius-lg);
  font-size: 16px;
  font-weight: 600;
  color: white;
  background: var(--gradient-primary);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-fast);
  text-decoration: none;
}

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

.version-info {
  font-size: 14px;
  background: rgba(255, 255, 255, 0.2);
  padding: 2px 8px;
  border-radius: 20px;
}

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

.hero-image-section {
  display: flex;
  justify-content: center;
  align-items: center;
}

.image-frame {
  position: relative;
  width: 100%;
  max-width: 500px;
  margin: 0 auto;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-image {
  max-width: 100%;
  max-height: 500px;
  object-fit: contain;
  border-radius: var(--border-radius-xl);
  box-shadow: var(--shadow-lg);
}

/* Section Styles */
.section-spacing {
  padding: 80px 0;
  scroll-margin-top: 80px;
  width: 100%;
  margin: 0;
}

@media (max-width: 768px) {
  .section-spacing {
    padding: 60px 0;
  }
}

.section-header {
  max-width: 1200px;
  margin: 0 auto 20px;
  padding: 0 20px;
  text-align: center;
}

.section-title {
  font-size: 36px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
  position: relative;
  display: inline-block;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 50px;
  height: 3px;
  background: var(--gradient-primary);
  border-radius: 2px;
}

.section-description {
  font-size: 17px;
  color: var(--text-secondary);
}

/* Features Grid */
.features-list {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}

.feature-card {
  background: var(--bg-secondary);
  padding: 24px 20px;
  border-radius: var(--border-radius-lg);
  border: 1px solid var(--border-color);
  transition: all var(--transition-fast);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

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

.feature-visual {
  width: 60px;
  height: 60px;
  background: var(--gradient-primary);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.feature-icon {
  width: 28px;
  height: 28px;
  color: white;
}

.feature-details {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.feature-heading {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.feature-text {
  font-size: 15px;
  line-height: 1.6;
  color: var(--text-secondary);
}

/* Gallery Block */
.gallery-block {
  background: var(--bg-tertiary);
  width: 100%;
  margin: 0;
}

.gallery-display {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-bottom: 16px;
  position: relative;
}

.main-display {
  flex: 1;
  max-width: 500px;
  display: flex;
  justify-content: center;
  align-items: center;
}

.main-image {
  max-width: 100%;
  max-height: 500px;
  object-fit: contain;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
}

.nav-button {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-primary);
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-sm);
}

.nav-button:hover {
  background: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
  transform: scale(1.05);
}

.nav-icon {
  width: 20px;
  height: 20px;
}

.thumbnails-row {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}

.thumbnail {
  width: 100px;
  height: 75px;
  border-radius: var(--border-radius);
  overflow: hidden;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all var(--transition-fast);
  opacity: 0.7;
}

.thumbnail:hover {
  opacity: 1;
  transform: scale(1.05);
}

.thumbnail.active-thumb {
  border-color: var(--primary-color);
  opacity: 1;
  box-shadow: 0 4px 8px rgba(22, 101, 52, 0.3);
}

.thumbnail img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  max-width: 100px;
  max-height: 75px;
}

/* Articles List */
.articles-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
}

.article-card {
  background: var(--bg-secondary);
  border-radius: var(--border-radius-lg);
  border: 1px solid var(--border-color);
  overflow: hidden;
  transition: all var(--transition-fast);
}

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

.article-body {
  padding: 20px;
}

.article-heading {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
}

.article-heading a {
  color: var(--text-primary);
  transition: color var(--transition-fast);
}

.article-heading a:hover {
  color: var(--primary-color);
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-color);
}

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

.article-preview {
  font-size: 15px;
  line-height: 1.6;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.read-more {
  font-size: 15px;
  font-weight: 600;
  color: var(--primary-color);
  transition: color var(--transition-fast);
}

.read-more:hover {
  color: var(--primary-dark);
}

/* Reviews Grid */
.reviews-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}

.review-card {
  background: var(--bg-secondary);
  padding: 24px 20px;
  border-radius: var(--border-radius-lg);
  border: 1px solid var(--border-color);
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
}

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

.review-card::before {
  content: "❝";
  position: absolute;
  top: 10px;
  left: 15px;
  font-size: 50px;
  color: var(--primary-light);
  font-family: Georgia, serif;
  line-height: 1;
  opacity: 0.1;
}

.review-stars {
  display: flex;
  gap: 4px;
  margin-bottom: 12px;
}

.star-icon {
  width: 18px;
  height: 18px;
  color: #f59e0b;
}

.review-content {
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-secondary);
  margin-bottom: 12px;
  font-style: italic;
  position: relative;
  z-index: 1;
  margin-top: 10px;
}

.review-author {
  display: flex;
  align-items: center;
  gap: 10px;
}

.author-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
}

/* Footer */
.page-footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 20px 0 20px;
  width: 100%;
  margin: 0;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  text-align: center;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.footer-icon {
  width: 40px;
  height: 40px;
  border-radius: 8px;
}

.footer-text {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
}

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

/* Responsive */
@media (max-width: 768px) {
  .main-title {
    font-size: 28px;
  }

  .subtitle {
    font-size: 16px;
  }

  .description {
    font-size: 15px;
  }

  .primary-button {
    padding: 12px 20px;
    font-size: 15px;
  }

  .section-title {
    font-size: 30px;
  }

  .feature-card,
  .review-card {
    padding: 24px 20px;
  }

  .article-body {
    padding: 20px;
  }

  .hero-container {
    gap: 20px;
  }

  .section-spacing {
    padding: 50px 0;
  }
}

@media (max-width: 480px) {
  .main-title {
    font-size: 24px;
  }

  .section-title {
    font-size: 26px;
  }

  .features-list,
  .reviews-container,
  .articles-container {
    grid-template-columns: 1fr;
  }

  .nav-container {
    padding: 0 16px;
  }

  .hero-container {
    padding: 0 16px;
  }
  
  .section-header {
    padding: 0 16px;
  }
  
  .gallery-display {
    padding: 0 16px;
  }
  
  .thumbnails-row {
    padding: 0 16px;
  }
  
  .articles-container {
    padding: 0 16px;
  }
  
  .reviews-container {
    padding: 0 16px;
  }
  
  .features-list {
    padding: 0 16px;
  }
  
  .footer-content {
    padding: 0 16px;
  }
}