/* UReport2 Website - Modern CSS Styles */

/* ===== CSS Variables ===== */
:root {
  /* Colors */
  --primary-color: #6366f1;
  --primary-dark: #4f46e5;
  --primary-light: #818cf8;
  --secondary-color: #06b6d4;
  --secondary-dark: #0891b2;
  --accent-color: #f59e0b;
  --success-color: #10b981;
  --warning-color: #f59e0b;
  --error-color: #ef4444;
  
  /* Text Colors */
  --text-primary: #1f2937;
  --text-secondary: #6b7280;
  --text-light: #9ca3af;
  --text-white: #ffffff;
  
  /* Background Colors */
  --bg-primary: #ffffff;
  --bg-secondary: #f9fafb;
  --bg-dark: #1f2937;
  --bg-darker: #111827;
  
  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
  --gradient-secondary: linear-gradient(135deg, #06b6d4 0%, #3b82f6 100%);
  --gradient-accent: linear-gradient(135deg, #f59e0b 0%, #ef4444 100%);
  --gradient-dark: linear-gradient(135deg, #1f2937 0%, #374151 100%);
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  
  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  
  /* Typography */
  --font-family: 'Inter', system-ui, -apple-system, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;
  --font-size-6xl: 3.75rem;
  
  /* Line Heights */
  --line-height-tight: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;
  
  /* Transitions */
  --transition-fast: 0.15s ease-in-out;
  --transition-normal: 0.3s ease-in-out;
  --transition-slow: 0.5s ease-in-out;
  
  /* Container */
  --container-max-width: 1280px;
  --container-padding: 1rem;
}

/* ===== Reset & Base Styles ===== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--text-primary);
  background-color: var(--bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

button {
  border: none;
  background: none;
  font-family: inherit;
  cursor: pointer;
  transition: all var(--transition-fast);
}

ul {
  list-style: none;
}

/* ===== Utility Classes ===== */
.container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.gradient-text {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.text-center {
  text-align: center;
}

.hidden {
  display: none;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ===== Navigation ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.1);
  transition: all var(--transition-normal);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem var(--container-padding);
  max-width: var(--container-max-width);
  margin: 0 auto;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 700;
  font-size: var(--font-size-xl);
  color: var(--text-primary);
}

.logo {
  width: 2.5rem;
  height: 2.5rem;
}

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

.nav-link {
  font-weight: 500;
  color: var(--text-secondary);
  padding: 0.5rem 0;
  position: relative;
  transition: all var(--transition-fast);
}

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

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

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

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 0.25rem;
  cursor: pointer;
}

.bar {
  width: 1.5rem;
  height: 2px;
  background: var(--text-primary);
  transition: all var(--transition-fast);
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  font-weight: 500;
  font-size: var(--font-size-sm);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
  border: 1px solid transparent;
  white-space: nowrap;
}

.btn-primary {
  background: var(--gradient-primary);
  color: var(--text-white);
  box-shadow: var(--shadow-sm);
}

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

.btn-secondary {
  background: var(--bg-secondary);
  color: var(--text-primary);
  border-color: rgba(0, 0, 0, 0.1);
}

.btn-secondary:hover {
  background: var(--bg-primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.btn-outline {
  background: transparent;
  color: var(--primary-color);
  border-color: var(--primary-color);
}

.btn-outline:hover {
  background: var(--primary-color);
  color: var(--text-white);
  box-shadow: var(--shadow-md);
}

.btn-large {
  padding: 1rem 2rem;
  font-size: var(--font-size-base);
}

/* ===== Hero Section ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-top: 5rem;
}

.hero-background {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 50%, #e2e8f0 100%);
  z-index: -1;
}

.hero-shapes {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  overflow: hidden;
}

.shape {
  position: absolute;
  border-radius: 50%;
  background: var(--gradient-primary);
  opacity: 0.1;
  animation: float 6s ease-in-out infinite;
}

.shape-1 {
  width: 20rem;
  height: 20rem;
  top: 10%;
  left: -10%;
  animation-delay: 0s;
}

.shape-2 {
  width: 15rem;
  height: 15rem;
  top: 60%;
  right: -5%;
  animation-delay: 2s;
}

.shape-3 {
  width: 12rem;
  height: 12rem;
  bottom: 20%;
  left: 60%;
  animation-delay: 4s;
}

@keyframes float {
  0%, 100% {
    transform: translateY(0px) scale(1);
  }
  50% {
    transform: translateY(-20px) scale(1.05);
  }
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  padding: 2rem 0;
}

.hero-title {
  font-size: var(--font-size-5xl);
  font-weight: 800;
  line-height: var(--line-height-tight);
  margin-bottom: 1.5rem;
  color: var(--text-primary);
}

.hero-description {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: 2rem;
}

.hero-stats {
  display: flex;
  gap: 2rem;
  margin-bottom: 2.5rem;
}

.stat-item {
  text-align: center;
}

.stat-number {
  display: block;
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--primary-color);
}

.stat-label {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.hero-visual {
  position: relative;
}

.hero-image-container {
  position: relative;
  border-radius: var(--radius-2xl);
  overflow: hidden;
  box-shadow: var(--shadow-2xl);
  background: var(--bg-primary);
}

.hero-image {
  width: 100%;
  height: auto;
  display: block;
}

.hero-image-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.hero-image-container:hover .hero-image-overlay {
  opacity: 1;
}

.play-button {
  width: 4rem;
  height: 4rem;
  border-radius: 50%;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-white);
  font-size: var(--font-size-xl);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.play-button:hover {
  transform: scale(1.1);
  box-shadow: var(--shadow-xl);
}

.floating-cards {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  pointer-events: none;
}

.floating-card {
  position: absolute;
  background: var(--bg-primary);
  padding: 1rem 1.5rem;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 500;
  color: var(--text-primary);
  animation: float 4s ease-in-out infinite;
}

.card-1 {
  top: 10%;
  left: -10%;
  background: var(--gradient-secondary);
  color: var(--text-white);
  animation-delay: 0s;
}

.card-2 {
  top: 50%;
  right: -15%;
  animation-delay: 1.5s;
}

.card-3 {
  bottom: 15%;
  left: -5%;
  background: var(--gradient-accent);
  color: var(--text-white);
  animation-delay: 3s;
}

/* ===== Section Headers ===== */
.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-title {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.section-subtitle {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* ===== Advantages Section ===== */
.advantages {
  padding: 6rem 0;
  background: var(--bg-secondary);
}

.advantages-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.advantage-card {
  background: var(--bg-primary);
  padding: 2rem;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  text-align: center;
  transition: all var(--transition-normal);
  border: 1px solid rgba(0, 0, 0, 0.05);
}

.advantage-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}

.advantage-icon {
  width: 4rem;
  height: 4rem;
  margin: 0 auto 1.5rem;
  background: var(--gradient-primary);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-white);
  font-size: var(--font-size-xl);
}

.advantage-card h3 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.advantage-card p {
  color: var(--text-secondary);
  line-height: var(--line-height-relaxed);
}

/* ===== Preview Section ===== */
.preview {
  padding: 6rem 0;
}

.preview-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.preview-text h2 {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 1.5rem;
}

.preview-text p {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  margin-bottom: 2rem;
  line-height: var(--line-height-relaxed);
}

.preview-features {
  margin-bottom: 2rem;
}

.preview-features li {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
  color: var(--text-secondary);
}

.preview-features i {
  color: var(--success-color);
  font-size: var(--font-size-sm);
}

.browser-mockup {
  background: var(--bg-primary);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-2xl);
  border: 1px solid rgba(0, 0, 0, 0.1);
}

.browser-header {
  background: var(--bg-secondary);
  padding: 1rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.browser-dots {
  display: flex;
  gap: 0.5rem;
}

.browser-dots span {
  width: 0.75rem;
  height: 0.75rem;
  border-radius: 50%;
  background: var(--text-light);
}

.browser-dots span:nth-child(1) {
  background: #ef4444;
}

.browser-dots span:nth-child(2) {
  background: #f59e0b;
}

.browser-dots span:nth-child(3) {
  background: #10b981;
}

.browser-title {
  font-weight: 500;
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
}

.browser-content {
  padding: 0;
}

.browser-content img {
  width: 100%;
  height: auto;
}

/* ===== Features Section ===== */
.features {
  padding: 6rem 0;
  background: var(--bg-secondary);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
}

.feature-card {
  background: var(--bg-primary);
  padding: 2rem;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  border: 1px solid rgba(0, 0, 0, 0.05);
}

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

.feature-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
}

.feature-icon {
  width: 3rem;
  height: 3rem;
  background: var(--gradient-primary);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-white);
  font-size: var(--font-size-lg);
}

.feature-card h3 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--text-primary);
}

.feature-card p {
  color: var(--text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: 1.5rem;
}

.feature-tags {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.tag {
  padding: 0.25rem 0.75rem;
  background: var(--bg-secondary);
  color: var(--text-secondary);
  border-radius: var(--radius-md);
  font-size: var(--font-size-xs);
  font-weight: 500;
}

/* ===== Cases Section ===== */
.cases {
  padding: 6rem 0;
}

.cases-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
}

.case-card {
  background: var(--bg-primary);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  border: 1px solid rgba(0, 0, 0, 0.05);
}

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

.case-image {
  height: 200px;
  overflow: hidden;
}

.case-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.case-card:hover .case-image img {
  transform: scale(1.05);
}

.case-content {
  padding: 2rem;
}

.case-content h3 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.case-content p {
  color: var(--text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: 1.5rem;
}

.case-stats {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.case-stats span {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.case-stats i {
  color: var(--primary-color);
}

/* ===== Docs Section ===== */
.docs {
  padding: 6rem 0;
  background: var(--bg-secondary);
}

.docs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.doc-card {
  background: var(--bg-primary);
  padding: 2rem;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  text-align: center;
  transition: all var(--transition-normal);
  border: 1px solid rgba(0, 0, 0, 0.05);
}

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

.doc-icon {
  width: 4rem;
  height: 4rem;
  margin: 0 auto 1.5rem;
  background: var(--gradient-secondary);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-white);
  font-size: var(--font-size-xl);
}

.doc-card h3 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.doc-card p {
  color: var(--text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: 1.5rem;
}

.doc-link {
  color: var(--primary-color);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: all var(--transition-fast);
}

.doc-link:hover {
  color: var(--primary-dark);
  transform: translateX(4px);
}

/* ===== Download Section ===== */
.download {
  padding: 6rem 0;
}

.download-options {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
}

.download-card {
  background: var(--bg-primary);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  border: 1px solid rgba(0, 0, 0, 0.1);
}

.download-card.featured {
  border-color: var(--primary-color);
  box-shadow: var(--shadow-lg);
  transform: scale(1.02);
}

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

.download-card.featured:hover {
  transform: translateY(-4px) scale(1.02);
}

.download-header {
  padding: 1.5rem 2rem;
  background: var(--bg-secondary);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.download-card.featured .download-header {
  background: var(--gradient-primary);
  color: var(--text-white);
}

.download-header h3 {
  font-size: var(--font-size-xl);
  font-weight: 600;
}

.recommended {
  padding: 0.25rem 0.75rem;
  background: var(--accent-color);
  color: var(--text-white);
  border-radius: var(--radius-md);
  font-size: var(--font-size-xs);
  font-weight: 500;
}

.download-content {
  padding: 2rem;
}

.download-content p {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
}

.code-block {
  position: relative;
  background: var(--bg-darker);
  color: var(--text-white);
  padding: 1.5rem;
  border-radius: var(--radius-lg);
  margin-bottom: 1.5rem;
  font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
  font-size: var(--font-size-sm);
  line-height: var(--line-height-relaxed);
  overflow-x: auto;
}

.copy-btn {
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 2rem;
  height: 2rem;
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-white);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.copy-btn:hover {
  background: rgba(255, 255, 255, 0.2);
}

.download-features {
  margin-bottom: 1.5rem;
}

.download-features li {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.5rem;
  color: var(--text-secondary);
}

.download-features i {
  color: var(--success-color);
}

.download-actions {
  padding: 2rem;
  background: var(--bg-secondary);
  text-align: center;
}

.download-card.featured .download-actions {
  background: rgba(99, 102, 241, 0.1);
}

/* ===== Community Section ===== */
.community {
  padding: 6rem 0;
  background: var(--bg-secondary);
}

.community-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.community-card {
  background: var(--bg-primary);
  padding: 2rem;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  text-align: center;
  transition: all var(--transition-normal);
  border: 1px solid rgba(0, 0, 0, 0.05);
}

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

.community-icon {
  width: 4rem;
  height: 4rem;
  margin: 0 auto 1.5rem;
  background: var(--gradient-accent);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-white);
  font-size: var(--font-size-xl);
}

.community-card h3 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.community-card p {
  color: var(--text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: 1.5rem;
}

.community-stats {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}

.community-stats span {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.community-stats i {
  color: var(--primary-color);
}

/* ===== CTA Section ===== */
.cta {
  padding: 6rem 0;
  background: var(--gradient-dark);
  color: var(--text-white);
  text-align: center;
}

.cta-content h2 {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  margin-bottom: 1.5rem;
}

.cta-content p {
  font-size: var(--font-size-lg);
  opacity: 0.9;
  margin-bottom: 2.5rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.cta-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ===== Footer ===== */
.footer {
  background: var(--bg-darker);
  color: var(--text-white);
  padding: 4rem 0 2rem;
}

.footer-content {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-brand {
  margin-bottom: 1.5rem;
}

.footer-logo {
  width: 2.5rem;
  height: 2.5rem;
  margin-bottom: 1rem;
}

.footer-brand p {
  color: rgba(255, 255, 255, 0.7);
  line-height: var(--line-height-relaxed);
}

.footer-social {
  display: flex;
  gap: 1rem;
  margin-top: 1rem;
}

.footer-social a {
  width: 2.5rem;
  height: 2.5rem;
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-white);
  transition: all var(--transition-fast);
}

.footer-social a:hover {
  background: var(--primary-color);
  transform: translateY(-2px);
}

.footer-section h4 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: 1.5rem;
  color: var(--text-white);
}

.footer-section ul li {
  margin-bottom: 0.75rem;
}

.footer-section ul li a {
  color: rgba(255, 255, 255, 0.7);
  transition: color var(--transition-fast);
}

.footer-section ul li a:hover {
  color: var(--text-white);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.7);
  font-size: var(--font-size-sm);
}

.footer-right a {
  color: rgba(255, 255, 255, 0.7);
  margin: 0 0.5rem;
}

.footer-right a:hover {
  color: var(--text-white);
}

/* ===== Back to Top ===== */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 3rem;
  height: 3rem;
  background: var(--gradient-primary);
  color: var(--text-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
  z-index: 1000;
}

.back-to-top.show {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
}

/* ===== Responsive Design ===== */
@media (max-width: 1024px) {
  .hero-content {
    grid-template-columns: 1fr;
    gap: 3rem;
    text-align: center;
  }
  
  .hero-visual {
    order: -1;
  }
  
  .preview-content {
    grid-template-columns: 1fr;
    gap: 3rem;
    text-align: center;
  }
  
  .footer-content {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }
}

@media (max-width: 768px) {
  :root {
    --font-size-5xl: 2.5rem;
    --font-size-4xl: 2rem;
    --font-size-3xl: 1.75rem;
    --container-padding: 1rem;
  }
  
  .nav-menu {
    position: fixed;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-primary);
    flex-direction: column;
    padding: 2rem;
    box-shadow: var(--shadow-lg);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
  }
  
  .nav-menu.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  
  .nav-toggle {
    display: flex;
  }
  
  .nav-toggle.active .bar:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }
  
  .nav-toggle.active .bar:nth-child(2) {
    opacity: 0;
  }
  
  .nav-toggle.active .bar:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
  }
  
  .hero {
    padding-top: 6rem;
    min-height: auto;
  }
  
  .hero-stats {
    justify-content: center;
  }
  
  .hero-actions {
    justify-content: center;
  }
  
  .section-header {
    margin-bottom: 3rem;
  }
  
  .advantages,
  .features,
  .cases,
  .docs,
  .download,
  .community {
    padding: 4rem 0;
  }
  
  .cta {
    padding: 4rem 0;
  }
  
  .footer {
    padding: 3rem 0 2rem;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
    gap: 2rem;
    text-align: center;
  }
  
  .footer-bottom {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }
  
  .cta-actions {
    flex-direction: column;
    align-items: center;
  }
}

@media (max-width: 480px) {
  .hero-stats {
    flex-direction: column;
    gap: 1rem;
  }
  
  .hero-actions {
    flex-direction: column;
    align-items: center;
  }
  
  .btn {
    width: 100%;
    justify-content: center;
  }
  
  .back-to-top {
    bottom: 1rem;
    right: 1rem;
  }
}

/* ===== Loading States ===== */
.loading {
  opacity: 0.7;
  pointer-events: none;
}

/* ===== Focus States ===== */
.btn:focus,
.nav-link:focus,
a:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* ===== Print Styles ===== */
@media print {
  .navbar,
  .back-to-top,
  .hero-actions,
  .cta,
  .footer {
    display: none;
  }
  
  * {
    box-shadow: none !important;
  }
  
  .hero {
    min-height: auto;
    padding: 2rem 0;
  }
}

/* ===== Page Specific Styles ===== */

/* Page Header */
.page-header {
  padding: 8rem 0 4rem;
  background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 50%, #e2e8f0 100%);
  position: relative;
  overflow: hidden;
}

.page-header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="%23e2e8f0" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
  opacity: 0.3;
}

.page-header-content {
  text-align: center;
  position: relative;
  z-index: 1;
}

.page-title {
  font-size: var(--font-size-5xl);
  font-weight: 800;
  margin-bottom: 1.5rem;
  color: var(--text-primary);
}

.page-description {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  max-width: 800px;
  margin: 0 auto 2rem;
  line-height: var(--line-height-relaxed);
}

.page-breadcrumb {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.page-breadcrumb a {
  color: var(--primary-color);
  font-weight: 500;
}

.page-breadcrumb i {
  font-size: 0.75rem;
}

/* Core Features Overview */
.core-features {
  padding: 6rem 0;
  background: var(--bg-primary);
}

.features-overview {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.feature-category {
  background: var(--bg-secondary);
  border-radius: var(--radius-xl);
  padding: 2rem;
  transition: all var(--transition-normal);
  border: 1px solid rgba(0, 0, 0, 0.05);
}

.feature-category:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.category-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.category-icon {
  width: 3.5rem;
  height: 3.5rem;
  background: var(--gradient-primary);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-white);
  font-size: var(--font-size-xl);
}

.category-header h3 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--text-primary);
}

.feature-list {
  list-style: none;
}

.feature-list li {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
}

.feature-list i {
  color: var(--success-color);
  font-size: 0.875rem;
}

/* Detailed Features */
.detailed-features {
  padding: 6rem 0;
  background: var(--bg-secondary);
}

.feature-detail {
  margin-bottom: 6rem;
}

.feature-detail:last-child {
  margin-bottom: 0;
}

.feature-detail-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.feature-detail.reverse .feature-detail-content {
  grid-template-columns: 1fr 1fr;
}

.feature-detail.reverse .feature-detail-text {
  order: 2;
}

.feature-detail.reverse .feature-detail-visual {
  order: 1;
}

.feature-detail-text h3 {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 1.5rem;
}

.feature-detail-text p {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: 2rem;
}

.feature-highlights {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 2rem;
}

.highlight-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem;
  background: var(--bg-primary);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.highlight-item i {
  width: 3rem;
  height: 3rem;
  background: var(--gradient-secondary);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-white);
  font-size: var(--font-size-lg);
}

.highlight-item h4 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.highlight-item p {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  margin: 0;
}

/* Mockup Browser */
.mockup-browser {
  background: var(--bg-primary);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  border: 1px solid rgba(0, 0, 0, 0.1);
}

.mockup-header {
  background: var(--bg-darker);
  padding: 1rem;
  display: flex;
  gap: 0.5rem;
}

.mockup-header span {
  width: 0.75rem;
  height: 0.75rem;
  border-radius: 50%;
  background: var(--text-light);
}

.mockup-header span:nth-child(1) {
  background: #ef4444;
}

.mockup-header span:nth-child(2) {
  background: #f59e0b;
}

.mockup-header span:nth-child(3) {
  background: #10b981;
}

.mockup-content {
  padding: 2rem;
}

.report-sample {
  font-family: var(--font-family);
}

.report-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  text-align: center;
  margin-bottom: 1.5rem;
  color: var(--text-primary);
}

.sample-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--font-size-sm);
}

.sample-table th {
  background: var(--primary-color);
  color: var(--text-white);
  padding: 0.75rem;
  text-align: left;
  font-weight: 500;
}

.sample-table td {
  padding: 0.75rem;
  border-bottom: 1px solid var(--bg-secondary);
}

.sample-table .group-header td {
  background: var(--bg-secondary);
  font-weight: 600;
  color: var(--text-primary);
}

.sample-table .subtotal td {
  background: #fef3c7;
  font-weight: 600;
}

.positive {
  color: var(--success-color);
  font-weight: 500;
}

/* Data Source Diagram */
.datasource-diagram {
  position: relative;
  width: 100%;
  height: 400px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.diagram-center {
  position: absolute;
  z-index: 2;
}

.center-node {
  width: 8rem;
  height: 8rem;
  background: var(--gradient-primary);
  border-radius: 50%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--text-white);
  font-weight: 600;
  box-shadow: var(--shadow-xl);
}

.center-node i {
  font-size: var(--font-size-2xl);
  margin-bottom: 0.5rem;
}

.datasource-connections {
  position: absolute;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-around;
  flex-wrap: wrap;
}

.datasource-item {
  width: 5rem;
  height: 5rem;
  background: var(--bg-primary);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  border: 2px solid var(--bg-secondary);
  font-size: var(--font-size-xs);
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  animation: pulse 2s ease-in-out infinite;
}

.datasource-item i {
  font-size: var(--font-size-lg);
  margin-bottom: 0.25rem;
  color: var(--primary-color);
}

@keyframes pulse {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
}

/* Feature Stats */
.feature-stats {
  display: flex;
  gap: 2rem;
  margin-bottom: 2rem;
}

.feature-stats .stat-item {
  text-align: center;
}

.feature-stats .stat-number {
  display: block;
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--primary-color);
}

.feature-stats .stat-label {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.supported-databases h4 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.db-list {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.db-tag {
  padding: 0.5rem 1rem;
  background: var(--gradient-secondary);
  color: var(--text-white);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: 500;
}

/* Chart Types */
.chart-types {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-bottom: 2rem;
}

.chart-type {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  padding: 1rem;
  background: var(--bg-primary);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
}

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

.chart-icon {
  width: 3rem;
  height: 3rem;
  background: var(--gradient-accent);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-white);
  font-size: var(--font-size-lg);
}

.chart-type span {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--text-primary);
}

.chart-features ul {
  list-style: none;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
}

.chart-features li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.chart-features i {
  color: var(--success-color);
}

/* Chart Showcase */
.chart-showcase {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.chart-demo {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  padding: 2rem;
  background: var(--bg-primary);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
}

.demo-chart {
  width: 8rem;
  height: 6rem;
  position: relative;
}

.bar-chart {
  display: flex;
  align-items: end;
  justify-content: space-around;
  padding: 0 1rem;
}

.chart-bar {
  width: 0.75rem;
  background: var(--gradient-primary);
  border-radius: 2px 2px 0 0;
  animation: growUp 2s ease-out;
}

@keyframes growUp {
  from {
    height: 0;
  }
  to {
    height: var(--final-height, 50%);
  }
}

.pie-chart {
  width: 6rem;
  height: 6rem;
  border-radius: 50%;
  position: relative;
  overflow: hidden;
}

.pie-slice {
  position: absolute;
  width: 50%;
  height: 50%;
  transform-origin: right bottom;
}

.slice-1 {
  background: #6366f1;
  transform: rotate(0deg);
}

.slice-2 {
  background: #8b5cf6;
  transform: rotate(90deg);
}

.slice-3 {
  background: #06b6d4;
  transform: rotate(180deg);
}

.slice-4 {
  background: #10b981;
  transform: rotate(270deg);
}

.line-chart svg {
  width: 100%;
  height: 100%;
}

.chart-label {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--text-primary);
}

/* Technical Advantages */
.technical-advantages {
  padding: 6rem 0;
  background: var(--bg-primary);
}

.advantages-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.advantage-item {
  background: var(--bg-secondary);
  padding: 2.5rem 2rem;
  border-radius: var(--radius-xl);
  text-align: center;
  transition: all var(--transition-normal);
  border: 1px solid rgba(0, 0, 0, 0.05);
}

.advantage-item:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}

.advantage-item .advantage-icon {
  width: 4.5rem;
  height: 4.5rem;
  margin: 0 auto 2rem;
  background: var(--gradient-primary);
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-white);
  font-size: var(--font-size-2xl);
}

.advantage-item h3 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.advantage-item p {
  color: var(--text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: 1.5rem;
}

.advantage-points {
  list-style: none;
  text-align: left;
}

.advantage-points li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.advantage-points li::before {
  content: '✓';
  color: var(--success-color);
  font-weight: bold;
}

/* CTA Section */
.cta-section {
  padding: 6rem 0;
  background: var(--gradient-dark);
  color: var(--text-white);
  text-align: center;
}

.cta-section h2 {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  margin-bottom: 1.5rem;
}

.cta-section p {
  font-size: var(--font-size-lg);
  opacity: 0.9;
  margin-bottom: 2.5rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.cta-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* Responsive Design for Feature Pages */
@media (max-width: 1024px) {
  .feature-detail-content {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  
  .feature-detail.reverse .feature-detail-text {
    order: 1;
  }
  
  .feature-detail.reverse .feature-detail-visual {
    order: 2;
  }
  
  .chart-types {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .feature-stats {
    justify-content: center;
  }
}

@media (max-width: 768px) {
  .page-header {
    padding: 6rem 0 3rem;
  }
  
  .page-title {
    font-size: var(--font-size-4xl);
  }
  
  .core-features,
  .detailed-features,
  .technical-advantages,
  .cta-section {
    padding: 4rem 0;
  }
  
  .chart-types {
    grid-template-columns: 1fr;
  }
  
  .chart-features ul {
    grid-template-columns: 1fr;
  }
  
  .feature-stats {
    flex-direction: column;
    align-items: center;
    gap: 1rem;
  }
  
  .cta-actions {
    flex-direction: column;
    align-items: center;
  }
  
  .datasource-connections {
    position: static;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    margin-top: 2rem;
  }
  
  .diagram-center {
    position: static;
    margin-bottom: 2rem;
  }
}

/* ===== Documentation Page Styles ===== */
.docs-navigation {
  padding: 4rem 0;
  background: var(--bg-secondary);
}

.docs-nav-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.doc-category {
  background: var(--bg-primary);
  padding: 2rem;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(0, 0, 0, 0.05);
}

.category-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.category-header i {
  color: var(--primary-color);
  font-size: var(--font-size-xl);
}

.category-header h3 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--text-primary);
}

.doc-links {
  list-style: none;
}

.doc-links li {
  margin-bottom: 0.75rem;
}

.doc-links a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: var(--transition-fast);
  font-size: var(--font-size-sm);
}

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

.doc-section {
  padding: 6rem 0;
}

.step-guide {
  max-width: 800px;
  margin: 0 auto;
}

.step-item {
  display: flex;
  gap: 2rem;
  margin-bottom: 3rem;
  align-items: flex-start;
}

.step-number {
  width: 3rem;
  height: 3rem;
  background: var(--gradient-primary);
  color: var(--text-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: var(--font-size-lg);
  flex-shrink: 0;
}

.step-content h3 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.step-content p {
  color: var(--text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: 1rem;
}

.code-block {
  background: var(--bg-dark);
  color: var(--text-white);
  padding: 1.5rem;
  border-radius: var(--radius-lg);
  position: relative;
  margin: 1rem 0;
  overflow-x: auto;
}

.code-block pre {
  margin: 0;
  font-family: 'Courier New', monospace;
  font-size: var(--font-size-sm);
  line-height: 1.5;
}

.copy-btn {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: rgba(255, 255, 255, 0.1);
  border: none;
  color: var(--text-white);
  padding: 0.5rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition-fast);
}

.copy-btn:hover {
  background: rgba(255, 255, 255, 0.2);
}

.docs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
}

.doc-card {
  background: var(--bg-primary);
  padding: 2rem;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(0, 0, 0, 0.05);
  transition: var(--transition-normal);
}

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

.doc-card.featured {
  border: 2px solid var(--primary-color);
  background: linear-gradient(135deg, var(--bg-primary) 0%, #f8fafc 100%);
}

.doc-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.doc-icon {
  width: 3rem;
  height: 3rem;
  background: var(--gradient-primary);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-white);
  font-size: var(--font-size-lg);
}

.doc-header h3 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--text-primary);
}

.doc-badge {
  background: var(--gradient-accent);
  color: var(--text-white);
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
  font-weight: 500;
  margin-left: auto;
}

.doc-description p {
  color: var(--text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: 1.5rem;
}

.doc-features {
  list-style: none;
  margin-bottom: 1.5rem;
}

.doc-features li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.doc-features i {
  color: var(--success-color);
}

.doc-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.learning-path {
  padding: 6rem 0;
  background: var(--bg-secondary);
}

.path-timeline {
  max-width: 800px;
  margin: 0 auto;
  position: relative;
}

.path-timeline::before {
  content: '';
  position: absolute;
  left: 2rem;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--primary-color);
  opacity: 0.3;
}

.path-step {
  display: flex;
  gap: 2rem;
  margin-bottom: 4rem;
  position: relative;
}

.step-marker {
  width: 4rem;
  height: 4rem;
  background: var(--gradient-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  position: relative;
  z-index: 1;
}

.step-number {
  color: var(--text-white);
  font-weight: 600;
  font-size: var(--font-size-lg);
}

.step-content h3 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.step-content p {
  color: var(--text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: 1.5rem;
}

.step-tasks {
  list-style: none;
  margin-bottom: 1rem;
}

.step-tasks li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.step-tasks li::before {
  content: '•';
  color: var(--primary-color);
  font-weight: bold;
}

.estimated-time {
  display: inline-block;
  background: var(--bg-secondary);
  color: var(--primary-color);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-lg);
  font-size: var(--font-size-sm);
  font-weight: 500;
}

.video-tutorials {
  padding: 6rem 0;
}

.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.video-card {
  background: var(--bg-primary);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-normal);
}

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

.video-thumbnail {
  position: relative;
  aspect-ratio: 16/9;
  background: var(--bg-secondary);
  overflow: hidden;
}

.video-thumbnail img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.play-overlay {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 4rem;
  height: 4rem;
  background: rgba(0, 0, 0, 0.7);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-white);
  font-size: var(--font-size-lg);
  cursor: pointer;
  transition: var(--transition-fast);
}

.play-overlay:hover {
  background: rgba(0, 0, 0, 0.8);
  transform: translate(-50%, -50%) scale(1.1);
}

.video-duration {
  position: absolute;
  bottom: 0.5rem;
  right: 0.5rem;
  background: rgba(0, 0, 0, 0.8);
  color: var(--text-white);
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
}

.video-content {
  padding: 1.5rem;
}

.video-content h3 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
}

.video-content p {
  color: var(--text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: 1rem;
}

.video-meta {
  display: flex;
  gap: 1rem;
  font-size: var(--font-size-sm);
  color: var(--text-light);
}

.video-meta span {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

/* ===== Download Page Styles ===== */
.version-info {
  padding: 4rem 0;
  background: var(--bg-secondary);
}

.version-card {
  background: var(--bg-primary);
  padding: 2rem;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(0, 0, 0, 0.05);
  max-width: 800px;
  margin: 0 auto;
}

.version-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.version-badge {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.badge-label {
  background: var(--gradient-primary);
  color: var(--text-white);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-lg);
  font-size: var(--font-size-sm);
  font-weight: 500;
}

.badge-version {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--primary-color);
}

.version-date {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
}

.version-content h3 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 1.5rem;
}

.highlights-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
}

.highlight-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem;
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
}

.highlight-item i {
  color: var(--success-color);
  font-size: var(--font-size-lg);
}

.highlight-item span {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--text-primary);
}

.version-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.download-options {
  padding: 6rem 0;
}

.download-methods {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
}

.download-card {
  background: var(--bg-primary);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(0, 0, 0, 0.05);
  transition: var(--transition-normal);
  position: relative;
}

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

.download-card.featured {
  border: 2px solid var(--primary-color);
  transform: scale(1.02);
}

.card-ribbon {
  position: absolute;
  top: 1rem;
  right: -0.5rem;
  background: var(--gradient-accent);
  color: var(--text-white);
  padding: 0.5rem 1rem;
  font-size: var(--font-size-xs);
  font-weight: 600;
  transform: rotate(15deg);
  z-index: 1;
}

.download-header {
  padding: 2rem 2rem 1rem;
  text-align: center;
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.download-icon {
  width: 4rem;
  height: 4rem;
  margin: 0 auto 1rem;
  background: var(--gradient-primary);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-white);
  font-size: var(--font-size-2xl);
}

.download-header h3 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.download-subtitle {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
}

.download-content {
  padding: 2rem;
}

.advantages h4,
.docker-commands h4,
.gradle-section h4 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.advantages ul {
  list-style: none;
  margin-bottom: 1.5rem;
}

.advantages li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.advantages i {
  color: var(--success-color);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin: 1.5rem 0;
}

.stat-item {
  text-align: center;
  padding: 1rem;
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
}

.stat-number {
  display: block;
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--primary-color);
}

.stat-label {
  font-size: var(--font-size-xs);
  color: var(--text-secondary);
  margin-top: 0.25rem;
}

.download-actions {
  padding: 0 2rem 2rem;
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.system-requirements {
  padding: 6rem 0;
  background: var(--bg-secondary);
}

.requirements-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.requirement-card {
  background: var(--bg-primary);
  padding: 2rem;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(0, 0, 0, 0.05);
}

.requirement-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.requirement-header i {
  color: var(--primary-color);
  font-size: var(--font-size-2xl);
}

.requirement-header h3 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--text-primary);
}

.requirement-table {
  width: 100%;
  border-collapse: collapse;
}

.requirement-table td {
  padding: 0.75rem 0;
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
  font-size: var(--font-size-sm);
}

.requirement-table td:first-child {
  color: var(--text-secondary);
  font-weight: 500;
}

.requirement-table td:last-child {
  color: var(--text-primary);
  text-align: right;
}

.db-support {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.db-category h4 {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
}

.db-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.db-item {
  background: var(--bg-secondary);
  color: var(--text-secondary);
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
}

.installation-guide {
  padding: 6rem 0;
}

.guide-tabs {
  max-width: 900px;
  margin: 0 auto;
}

.tab-nav {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 2rem;
  border-bottom: 2px solid var(--bg-secondary);
  overflow-x: auto;
}

.tab-btn {
  background: none;
  border: none;
  padding: 1rem 1.5rem;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--text-secondary);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: var(--transition-fast);
  white-space: nowrap;
}

.tab-btn.active,
.tab-btn:hover {
  color: var(--primary-color);
  border-bottom-color: var(--primary-color);
}

.tab-content {
  position: relative;
}

.tab-pane {
  display: none;
}

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

.guide-steps {
  display: flex;
  flex-direction: column;
  gap: 3rem;
}

.changelog {
  padding: 6rem 0;
  background: var(--bg-secondary);
}

.changelog-timeline {
  max-width: 800px;
  margin: 0 auto;
}

.changelog-item {
  display: flex;
  gap: 2rem;
  margin-bottom: 3rem;
  align-items: flex-start;
}

.changelog-version {
  flex-shrink: 0;
  text-align: center;
  min-width: 120px;
}

.version-tag {
  display: block;
  background: var(--gradient-primary);
  color: var(--text-white);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-lg);
  font-weight: 600;
  font-size: var(--font-size-sm);
  margin-bottom: 0.5rem;
}

.release-date {
  font-size: var(--font-size-xs);
  color: var(--text-light);
}

.changelog-content h3 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.changelog-list {
  list-style: none;
}

.changelog-list li {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.changelog-list .new i {
  color: var(--success-color);
}

.changelog-list .improve i {
  color: var(--primary-color);
}

.changelog-list .fix i {
  color: var(--warning-color);
}

.changelog-actions {
  text-align: center;
  margin-top: 3rem;
}

/* ===== Community Page Styles ===== */
.community-overview {
  padding: 4rem 0;
  background: var(--bg-secondary);
}

.overview-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
}

.stat-card {
  background: var(--bg-primary);
  padding: 2rem;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  text-align: center;
  border: 1px solid rgba(0, 0, 0, 0.05);
  transition: var(--transition-normal);
}

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

.stat-icon {
  width: 4rem;
  height: 4rem;
  margin: 0 auto 1.5rem;
  background: var(--gradient-primary);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-white);
  font-size: var(--font-size-xl);
}

.stat-content {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.stat-number {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: 0.5rem;
}

.stat-label {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.community-platforms {
  padding: 6rem 0;
}

.platforms-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
}

.platform-card {
  background: var(--bg-primary);
  padding: 2rem;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(0, 0, 0, 0.05);
  transition: var(--transition-normal);
}

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

.platform-card.featured {
  border: 2px solid var(--primary-color);
  background: linear-gradient(135deg, var(--bg-primary) 0%, #f8fafc 100%);
}

.platform-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.platform-icon {
  width: 3rem;
  height: 3rem;
  background: var(--gradient-primary);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-white);
  font-size: var(--font-size-lg);
}

.platform-header h3 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--text-primary);
}

.platform-badge {
  background: var(--gradient-accent);
  color: var(--text-white);
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
  font-weight: 500;
  margin-left: auto;
}

.platform-content p {
  color: var(--text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: 1.5rem;
}

.platform-stats {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 1.5rem;
}

.platform-stats .stat-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--bg-secondary);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-lg);
  font-size: var(--font-size-sm);
}

.platform-stats i {
  color: var(--primary-color);
}

.platform-features {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.feature-tag {
  background: var(--bg-secondary);
  color: var(--text-secondary);
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
}

.platform-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.qq-groups {
  margin-bottom: 1.5rem;
}

.qq-group {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem;
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  margin-bottom: 0.75rem;
}

.group-info {
  display: flex;
  flex-direction: column;
}

.group-name {
  font-weight: 500;
  color: var(--text-primary);
  font-size: var(--font-size-sm);
}

.group-number {
  color: var(--text-secondary);
  font-size: var(--font-size-xs);
  margin-top: 0.25rem;
}

.group-status {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.status-indicator {
  width: 0.75rem;
  height: 0.75rem;
  border-radius: 50%;
}

.status-indicator.full {
  background: var(--error-color);
}

.status-indicator.available {
  background: var(--success-color);
}

.status-text {
  font-size: var(--font-size-xs);
  color: var(--text-secondary);
}

.wechat-info {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin-bottom: 1.5rem;
}

.qr-code {
  text-align: center;
}

.qr-code img {
  width: 150px;
  height: 150px;
  border-radius: var(--radius-lg);
  margin-bottom: 1rem;
}

.qr-code p {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin: 0.5rem 0;
}

.wechat-rules h4 {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.wechat-rules ul {
  list-style: none;
}

.wechat-rules li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
  font-size: var(--font-size-xs);
  color: var(--text-secondary);
}

.wechat-rules li::before {
  content: '•';
  color: var(--primary-color);
  font-weight: bold;
}

.forum-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.forum-categories {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.category-tag {
  background: var(--bg-secondary);
  color: var(--text-secondary);
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
}

.technical-support {
  padding: 6rem 0;
  background: var(--bg-secondary);
}

.support-levels {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
}

.support-card {
  background: var(--bg-primary);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(0, 0, 0, 0.05);
  transition: var(--transition-normal);
}

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

.support-card.featured {
  border: 2px solid var(--primary-color);
  transform: scale(1.02);
}

.support-header {
  padding: 2rem 2rem 1rem;
  text-align: center;
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.support-icon {
  width: 4rem;
  height: 4rem;
  margin: 0 auto 1rem;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-white);
  font-size: var(--font-size-2xl);
}

.support-icon.free {
  background: var(--gradient-secondary);
}

.support-icon.premium {
  background: var(--gradient-primary);
}

.support-icon.enterprise {
  background: var(--gradient-dark);
}

.support-header h3 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.support-price {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  font-weight: 500;
}

.support-content {
  padding: 2rem;
}

.support-features {
  list-style: none;
  margin-bottom: 1.5rem;
}

.support-features li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.support-features i {
  color: var(--success-color);
}

.response-time {
  background: var(--bg-secondary);
  padding: 1rem;
  border-radius: var(--radius-lg);
  margin-bottom: 1.5rem;
}

.time-label {
  font-size: var(--font-size-xs);
  color: var(--text-light);
  margin-right: 0.5rem;
}

.time-value {
  font-weight: 600;
  color: var(--primary-color);
  font-size: var(--font-size-sm);
}

.support-actions {
  padding: 0 2rem 2rem;
}

.knowledge-resources {
  padding: 6rem 0;
}

.resources-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.resource-card {
  background: var(--bg-primary);
  padding: 2rem;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(0, 0, 0, 0.05);
  transition: var(--transition-normal);
}

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

.resource-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.resource-icon {
  width: 3rem;
  height: 3rem;
  background: var(--gradient-primary);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-white);
  font-size: var(--font-size-lg);
}

.resource-header h3 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--text-primary);
}

.resource-content p {
  color: var(--text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: 1.5rem;
}

.resource-items {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.resource-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  text-decoration: none;
  color: var(--text-secondary);
  transition: var(--transition-fast);
  font-size: var(--font-size-sm);
}

.resource-link:hover {
  background: var(--primary-color);
  color: var(--text-white);
}

.resource-link i {
  color: var(--primary-color);
  transition: var(--transition-fast);
}

.resource-link:hover i {
  color: var(--text-white);
}

.video-list {
  margin-bottom: 1.5rem;
}

.video-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.75rem;
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  margin-bottom: 0.75rem;
}

.video-item i {
  color: var(--primary-color);
  font-size: var(--font-size-lg);
}

.video-info {
  display: flex;
  flex-direction: column;
}

.video-title {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--text-primary);
}

.video-duration {
  font-size: var(--font-size-xs);
  color: var(--text-light);
  margin-top: 0.25rem;
}

.blog-posts {
  margin-bottom: 1.5rem;
}

.blog-post {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem;
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  margin-bottom: 0.75rem;
}

.post-title {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--text-primary);
}

.post-date {
  font-size: var(--font-size-xs);
  color: var(--text-light);
}

.code-examples {
  margin-bottom: 1.5rem;
}

.example-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem;
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  margin-bottom: 0.75rem;
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.example-item i {
  color: var(--primary-color);
}

.resource-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.contribution-guide {
  padding: 6rem 0;
  background: var(--bg-secondary);
}

.contribution-types {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  margin-bottom: 4rem;
}

.contribution-card {
  background: var(--bg-primary);
  padding: 2rem;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(0, 0, 0, 0.05);
  text-align: center;
  transition: var(--transition-normal);
}

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

.contribution-icon {
  width: 4rem;
  height: 4rem;
  margin: 0 auto 1.5rem;
  background: var(--gradient-primary);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-white);
  font-size: var(--font-size-xl);
}

.contribution-card h3 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.contribution-card p {
  color: var(--text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: 1.5rem;
}

.contribution-steps {
  list-style: none;
  text-align: left;
  margin-bottom: 1.5rem;
}

.contribution-steps li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.contribution-steps li::before {
  content: counter(step-counter);
  counter-increment: step-counter;
  background: var(--primary-color);
  color: var(--text-white);
  width: 1.5rem;
  height: 1.5rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-xs);
  font-weight: 600;
  flex-shrink: 0;
}

.contribution-card {
  counter-reset: step-counter;
}

.contribution-benefits {
  text-align: center;
}

.contribution-benefits h3 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 2rem;
}

.benefits-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
}

.benefit-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  padding: 1.5rem;
  background: var(--bg-primary);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
}

.benefit-item i {
  color: var(--primary-color);
  font-size: var(--font-size-2xl);
}

.benefit-item span {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--text-primary);
  text-align: center;
}

/* Modal Styles */
.modal {
  display: none;
  position: fixed;
  z-index: 1000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  animation: fadeIn 0.3s ease;
}

.modal-content {
  background-color: var(--bg-primary);
  margin: 10% auto;
  padding: 0;
  border-radius: var(--radius-xl);
  width: 90%;
  max-width: 500px;
  box-shadow: var(--shadow-2xl);
  animation: slideIn 0.3s ease;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 2rem 2rem 1rem;
  border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.modal-header h3 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
}

.close {
  color: var(--text-light);
  font-size: var(--font-size-2xl);
  font-weight: bold;
  cursor: pointer;
  transition: var(--transition-fast);
}

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

.modal-body {
  padding: 2rem;
}

.qr-code-large {
  text-align: center;
}

.qr-code-large img {
  width: 200px;
  height: 200px;
  border-radius: var(--radius-lg);
  margin-bottom: 1rem;
}

.qr-code-large p {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  margin-bottom: 0.5rem;
}

.qr-code-large .note {
  color: var(--text-light);
  font-size: var(--font-size-xs);
  font-style: italic;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideIn {
  from {
    transform: translateY(-50px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

/* ===== High Contrast Mode ===== */
@media (prefers-contrast: high) {
  :root {
    --text-secondary: #000000;
    --bg-secondary: #ffffff;
  }
}

/* ===== Responsive Design ===== */
@media (max-width: 1024px) {
  .feature-detail-content {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  
  .feature-detail.reverse .feature-detail-text {
    order: 1;
  }
  
  .feature-detail.reverse .feature-detail-visual {
    order: 2;
  }
  
  .chart-types {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .feature-stats {
    justify-content: center;
  }
  
  .docs-nav-grid,
  .docs-grid,
  .download-methods,
  .platforms-grid,
  .support-levels,
  .resources-grid {
    grid-template-columns: 1fr;
  }
  
  .version-header {
    flex-direction: column;
    text-align: center;
  }
  
  .wechat-info {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .stats-grid,
  .forum-stats {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .page-header {
    padding: 6rem 0 3rem;
  }
  
  .page-title {
    font-size: var(--font-size-4xl);
  }
  
  .docs-navigation,
  .doc-section,
  .download-options,
  .system-requirements,
  .installation-guide,
  .changelog,
  .community-overview,
  .community-platforms,
  .technical-support,
  .knowledge-resources,
  .contribution-guide,
  .learning-path,
  .video-tutorials,
  .version-info,
  .cta-section {
    padding: 4rem 0;
  }
  
  .step-item,
  .path-step {
    flex-direction: column;
    gap: 1rem;
  }
  
  .step-number,
  .step-marker {
    align-self: flex-start;
  }
  
  .path-timeline::before {
    display: none;
  }
  
  .tab-nav {
    flex-wrap: wrap;
  }
  
  .chart-types {
    grid-template-columns: 1fr;
  }
  
  .chart-features ul {
    grid-template-columns: 1fr;
  }
  
  .feature-stats {
    flex-direction: column;
    align-items: center;
    gap: 1rem;
  }
  
  .cta-actions {
    flex-direction: column;
    align-items: center;
  }
  
  .datasource-connections {
    position: static;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    margin-top: 2rem;
  }
  
  .diagram-center {
    position: static;
    margin-bottom: 2rem;
  }
  
  .highlights-grid {
    grid-template-columns: 1fr;
  }
  
  .version-actions,
  .doc-actions,
  .platform-actions,
  .support-actions,
  .resource-actions {
    flex-direction: column;
  }
  
  .modal-content {
    width: 95%;
    margin: 5% auto;
  }
  
  .contribution-types {
    grid-template-columns: 1fr;
  }
  
  .benefits-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 1rem;
  }
  
  .page-header {
    padding: 4rem 0 2rem;
  }
  
  .page-title {
    font-size: var(--font-size-3xl);
  }
  
  .section-title {
    font-size: var(--font-size-3xl);
  }
  
  .docs-navigation,
  .doc-section,
  .download-options,
  .system-requirements,
  .installation-guide,
  .changelog,
  .community-overview,
  .community-platforms,
  .technical-support,
  .knowledge-resources,
  .contribution-guide,
  .learning-path,
  .video-tutorials,
  .version-info,
  .cta-section {
    padding: 3rem 0;
  }
  
  .doc-card,
  .download-card,
  .platform-card,
  .support-card,
  .resource-card,
  .contribution-card {
    padding: 1.5rem;
  }
  
  .benefits-grid {
    grid-template-columns: 1fr;
  }
  
  .overview-stats,
  .requirements-grid {
    grid-template-columns: 1fr;
  }
  
  .btn {
    width: 100%;
    justify-content: center;
  }
}

/* Additional styles for new page elements */
.supported-sources,
.demo-features,
.demo-stats,
.db-tags,
.chart-types-mini,
.expression-examples,
.api-endpoints {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1rem 0;
}

.source-tag,
.db-tag,
.endpoint-tag {
  background: var(--bg-secondary);
  color: var(--text-secondary);
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
}

.demo-stat {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  margin-bottom: 1rem;
}

.demo-stat span:first-child {
  font-size: var(--font-size-xs);
  color: var(--text-secondary);
  font-weight: 500;
}

.demo-stat code {
  background: var(--bg-dark);
  color: var(--text-white);
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
  font-family: 'Courier New', monospace;
}

.chart-types-mini {
  justify-content: center;
  gap: 1rem;
  margin: 1rem 0;
}

.chart-types-mini i {
  color: var(--primary-color);
  font-size: var(--font-size-lg);
}

.expression-examples {
  flex-direction: column;
  gap: 0.5rem;
}

.expression-examples code {
  background: var(--bg-secondary);
  color: var(--text-primary);
  padding: 0.5rem;
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
  font-family: 'Courier New', monospace;
}

.faq-topics {
  list-style: none;
}

.faq-topics li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.faq-topics li::before {
  content: '•';
  color: var(--primary-color);
  font-weight: bold;
}

.demo-card {
  background: linear-gradient(135deg, var(--bg-primary) 0%, #f0f9ff 100%);
  border: 2px solid var(--secondary-color);
}

.demo-card .download-icon {
  background: var(--gradient-secondary);
}

/* Cases page specific styles */
.cases-overview {
  padding: 4rem 0;
  background: var(--bg-secondary);
}

.industry-coverage {
  text-align: center;
  margin-top: 3rem;
}

.industry-coverage h3 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 1.5rem;
}

.industry-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
}

.industry-tag {
  background: var(--bg-primary);
  color: var(--text-secondary);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-lg);
  font-size: var(--font-size-sm);
  box-shadow: var(--shadow-sm);
  transition: var(--transition-fast);
}

.industry-tag:hover {
  background: var(--primary-color);
  color: var(--text-white);
  transform: translateY(-2px);
}

.detailed-cases {
  padding: 6rem 0;
}

.case-study {
  background: var(--bg-primary);
  padding: 3rem;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(0, 0, 0, 0.05);
  margin-bottom: 4rem;
}

.case-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 2rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.case-company {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.company-logo {
  width: 4rem;
  height: 4rem;
  background: var(--gradient-primary);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-white);
  font-size: var(--font-size-xl);
}

.company-info h3 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.company-info p {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
}

.case-category {
  display: flex;
  align-items: center;
}

.category-tag {
  padding: 0.5rem 1rem;
  border-radius: var(--radius-lg);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--text-white);
}

.category-tag.finance {
  background: var(--gradient-primary);
}

.category-tag.sales {
  background: var(--gradient-secondary);
}

.category-tag.manufacturing {
  background: var(--gradient-accent);
}

.case-content {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.case-challenge,
.case-solution,
.case-results,
.case-tech-stack {
  padding: 2rem;
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
}

.case-challenge h4,
.case-solution h4,
.case-results h4,
.case-tech-stack h4 {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 1.5rem;
}

.case-challenge i {
  color: var(--warning-color);
}

.case-solution i {
  color: var(--primary-color);
}

.case-results i {
  color: var(--success-color);
}

.case-tech-stack i {
  color: var(--secondary-color);
}

.case-challenge ul,
.manufacturing-modules ul {
  list-style: none;
}

.case-challenge li,
.manufacturing-modules li {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  line-height: var(--line-height-relaxed);
}

.case-challenge li::before {
  content: '•';
  color: var(--warning-color);
  font-weight: bold;
  flex-shrink: 0;
  margin-top: 0.125rem;
}

.solution-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
}

.solution-item {
  text-align: center;
  padding: 1.5rem;
  background: var(--bg-primary);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(0, 0, 0, 0.05);
}

.solution-item i {
  color: var(--primary-color);
  font-size: var(--font-size-2xl);
  margin-bottom: 1rem;
}

.solution-item h5 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
}

.solution-item p {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  line-height: var(--line-height-relaxed);
}

.results-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
}

.result-item {
  text-align: center;
  padding: 1.5rem;
  background: var(--bg-primary);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(0, 0, 0, 0.05);
}

.result-number {
  display: block;
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--success-color);
  margin-bottom: 0.5rem;
}

.result-label {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.case-testimonial {
  background: var(--bg-primary);
  padding: 2rem;
  border-radius: var(--radius-lg);
  border-left: 4px solid var(--primary-color);
  margin-top: 1rem;
}

.case-testimonial blockquote {
  font-style: italic;
  color: var(--text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: 1rem;
  font-size: var(--font-size-lg);
}

.case-testimonial cite {
  color: var(--text-primary);
  font-weight: 500;
  font-size: var(--font-size-sm);
}

.tech-diagram {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.tech-layer {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem;
  background: var(--bg-primary);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(0, 0, 0, 0.05);
}

.layer-title {
  min-width: 80px;
  font-weight: 600;
  color: var(--text-primary);
  font-size: var(--font-size-sm);
}

.tech-items {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tech-item {
  background: var(--bg-secondary);
  color: var(--text-secondary);
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
}

.manufacturing-modules {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.module-item {
  background: var(--bg-primary);
  padding: 2rem;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(0, 0, 0, 0.05);
}

.module-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.module-header i {
  color: var(--primary-color);
  font-size: var(--font-size-xl);
}

.module-header h5 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--text-primary);
}

.manufacturing-modules li::before {
  content: '•';
  color: var(--primary-color);
  font-weight: bold;
  flex-shrink: 0;
  margin-top: 0.125rem;
}

.customer-testimonials {
  padding: 6rem 0;
  background: var(--bg-secondary);
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
}

.testimonial-card {
  background: var(--bg-primary);
  padding: 2rem;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(0, 0, 0, 0.05);
  transition: var(--transition-normal);
}

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

.testimonial-content {
  margin-bottom: 2rem;
}

.quote-icon {
  width: 3rem;
  height: 3rem;
  background: var(--gradient-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-white);
  font-size: var(--font-size-lg);
  margin-bottom: 1.5rem;
}

.testimonial-content p {
  color: var(--text-secondary);
  line-height: var(--line-height-relaxed);
  font-style: italic;
  font-size: var(--font-size-lg);
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.author-avatar {
  width: 3rem;
  height: 3rem;
  background: var(--bg-secondary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  font-size: var(--font-size-lg);
}

.author-info h4 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.author-info p {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
}

.implementation-service {
  padding: 6rem 0;
}

.service-timeline {
  max-width: 900px;
  margin: 0 auto;
  position: relative;
}

.service-timeline::before {
  content: '';
  position: absolute;
  left: 2rem;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--primary-color);
  opacity: 0.3;
}

.timeline-item {
  display: flex;
  gap: 2rem;
  margin-bottom: 4rem;
  position: relative;
}

.timeline-icon {
  width: 4rem;
  height: 4rem;
  background: var(--gradient-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-white);
  font-size: var(--font-size-xl);
  flex-shrink: 0;
  position: relative;
  z-index: 1;
}

.timeline-content h3 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.timeline-content p {
  color: var(--text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: 1.5rem;
}

.timeline-content ul {
  list-style: none;
}

.timeline-content li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.timeline-content li::before {
  content: '•';
  color: var(--primary-color);
  font-weight: bold;
}

/* ===== Disclaimer Page Styles ===== */
.disclaimer-notice {
  padding: 4rem 0;
  background: var(--bg-secondary);
}

.notice-card {
  display: flex;
  align-items: flex-start;
  gap: 1.5rem;
  padding: 2rem;
  border-radius: var(--radius-xl);
  max-width: 800px;
  margin: 0 auto;
  box-shadow: var(--shadow-lg);
}

.notice-card.important {
  background: linear-gradient(135deg, #fef3c7 0%, #fbbf24 20%, #f59e0b 100%);
  border: 2px solid var(--warning-color);
}

.notice-icon {
  width: 4rem;
  height: 4rem;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #92400e;
  font-size: var(--font-size-2xl);
  flex-shrink: 0;
}

.notice-content h2 {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: #92400e;
  margin-bottom: 1rem;
}

.notice-content p {
  color: #92400e;
  line-height: var(--line-height-relaxed);
  font-size: var(--font-size-lg);
}

.disclaimer-details {
  padding: 6rem 0;
}

.disclaimer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 3rem;
  margin-bottom: 4rem;
}

.disclaimer-section {
  background: var(--bg-primary);
  padding: 2.5rem;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(0, 0, 0, 0.05);
  transition: var(--transition-normal);
}

.disclaimer-section:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.disclaimer-section .section-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 2px solid var(--bg-secondary);
}

.disclaimer-section .section-header i {
  color: var(--primary-color);
  font-size: var(--font-size-xl);
}

.disclaimer-section .section-header h3 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--text-primary);
}

.disclaimer-list {
  list-style: none;
}

.disclaimer-list li {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1.5rem;
  line-height: var(--line-height-relaxed);
  color: var(--text-secondary);
}

.disclaimer-list li::before {
  content: '▶';
  color: var(--primary-color);
  font-size: var(--font-size-sm);
  margin-top: 0.125rem;
  flex-shrink: 0;
}

.disclaimer-list li strong {
  color: var(--text-primary);
}

.disclaimer-list li a {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 500;
  transition: var(--transition-fast);
}

.disclaimer-list li a:hover {
  color: var(--primary-dark);
  text-decoration: underline;
}

.official-sources {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.source-item {
  display: flex;
  align-items: flex-start;
  gap: 1.5rem;
  padding: 1.5rem;
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(0, 0, 0, 0.05);
}

.source-icon {
  width: 3rem;
  height: 3rem;
  background: var(--gradient-primary);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-white);
  font-size: var(--font-size-lg);
  flex-shrink: 0;
}

.source-info h4 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.source-info p {
  color: var(--text-secondary);
  margin-bottom: 1rem;
  line-height: var(--line-height-relaxed);
}

.acknowledgment {
  background: linear-gradient(135deg, var(--bg-primary) 0%, #f8fafc 100%);
  padding: 3rem;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  border: 2px solid var(--primary-color);
  margin-bottom: 3rem;
  text-align: center;
}

.acknowledgment-content h3 {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  font-size: var(--font-size-2xl);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 1.5rem;
}

.acknowledgment-content h3 i {
  color: #ef4444;
}

.acknowledgment-content p {
  color: var(--text-secondary);
  line-height: var(--line-height-relaxed);
  font-size: var(--font-size-lg);
  margin-bottom: 2rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.acknowledgment-links {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.contact-info {
  background: var(--bg-secondary);
  padding: 2.5rem;
  border-radius: var(--radius-xl);
  text-align: center;
}

.contact-info h3 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.contact-info p {
  color: var(--text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: 2rem;
}

.contact-methods {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  max-width: 500px;
  margin: 0 auto;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem;
  background: var(--bg-primary);
  border-radius: var(--radius-lg);
  text-align: left;
}

.contact-item i {
  color: var(--primary-color);
  font-size: var(--font-size-lg);
  width: 1.5rem;
  text-align: center;
}

.contact-item span {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
}

.footer-disclaimer {
  font-size: var(--font-size-xs);
  color: var(--text-light);
  margin-top: 0.5rem;
  font-style: italic;
}

/* Mobile responsive for disclaimer page */
@media (max-width: 768px) {
  .disclaimer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .notice-card {
    flex-direction: column;
    text-align: center;
  }
  
  .source-item {
    flex-direction: column;
    text-align: center;
  }
  
  .acknowledgment-links {
    flex-direction: column;
    align-items: center;
  }
  
  .disclaimer-section {
    padding: 2rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}