/* ========================================
   GEO 代运营官网 - 样式表
   设计风格: 白色系 + 紫色强调 (#7C3AED)
   ======================================== */

/* CSS Variables */
:root {
  /* 色彩系统 */
  --color-bg-primary: #FFFFFF;
  --color-bg-secondary: #F9FAFB;
  --color-bg-tertiary: #F3F4F6;
  --color-accent: #7C3AED;
  --color-accent-hover: #6D28D9;
  --color-accent-light: #EDE9FE;
  --color-success: #10B981;
  --color-warning: #F59E0B;
  --color-text-primary: #1F2937;
  --color-text-secondary: #6B7280;
  --color-text-muted: #9CA3AF;
  --color-border: #E5E7EB;
  --color-border-light: #F3F4F6;

  /* 字体 */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  
  /* 间距 */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-2xl: 48px;
  --spacing-3xl: 64px;
  --spacing-4xl: 96px;

  /* 圆角 */
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --radius-xl: 12px;
  --radius-2xl: 16px;
  --radius-full: 9999px;

  /* 阴影 */
  --shadow-sm: 0 1px 2px 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);

  /* 过渡 */
  --transition-fast: 150ms ease;
  --transition-base: 200ms ease;
  --transition-slow: 300ms ease;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  background-color: var(--color-bg-primary);
  color: var(--color-text-primary);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

a:hover {
  color: var(--color-accent-hover);
}

ul, ol {
  list-style: none;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.25;
  color: var(--color-text-primary);
}

h1 {
  font-size: 3rem;
  letter-spacing: -0.02em;
}

h2 {
  font-size: 2rem;
  letter-spacing: -0.01em;
}

h3 {
  font-size: 1.5rem;
}

h4 {
  font-size: 1.25rem;
}

p {
  color: var(--color-text-secondary);
}

/* Container */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

/* ========================================
   Navigation
   ======================================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow var(--transition-base);
}

.navbar.scrolled {
  box-shadow: var(--shadow-md);
}

.navbar-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.navbar-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-text-primary);
}

.navbar-logo svg {
  width: 32px;
  height: 32px;
}

.navbar-nav {
  display: flex;
  align-items: center;
  gap: var(--spacing-xl);
}

.navbar-nav a {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
}

.navbar-nav a:hover,
.navbar-nav a.active {
  color: var(--color-text-primary);
}

.navbar-cta {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-sm);
}

/* ========================================
   Buttons
   ======================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: 12px 24px;
  font-size: 0.9375rem;
  font-weight: 500;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-accent);
  color: #FFFFFF;
}

.btn-primary:hover {
  background: var(--color-accent-hover);
  color: #FFFFFF;
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

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

.btn-secondary:hover {
  background: var(--color-bg-secondary);
  border-color: var(--color-text-muted);
}

.btn-ghost {
  background: transparent;
  color: var(--color-accent);
  padding: 8px 16px;
}

.btn-ghost:hover {
  background: var(--color-accent-light);
}

.btn-lg {
  padding: 16px 32px;
  font-size: 1rem;
}

.btn-sm {
  padding: 8px 16px;
  font-size: 0.875rem;
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
  padding: 160px 0 100px;
  background: linear-gradient(180deg, var(--color-bg-secondary) 0%, var(--color-bg-primary) 100%);
}

.hero-content {
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: 6px 16px;
  background: var(--color-accent-light);
  color: var(--color-accent);
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: var(--radius-full);
  margin-bottom: var(--spacing-lg);
}

.hero h1 {
  margin-bottom: var(--spacing-lg);
  font-size: 3.5rem;
  letter-spacing: -0.03em;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-2xl);
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.hero-features {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-lg);
  margin-top: var(--spacing-4xl);
  padding-top: var(--spacing-3xl);
  border-top: 1px solid var(--color-border);
}

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

.hero-feature-value {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: var(--spacing-xs);
}

.hero-feature-label {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

/* ========================================
   Section Styles
   ======================================== */
.section {
  padding: var(--spacing-4xl) 0;
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto var(--spacing-3xl);
}

.section-header h2 {
  margin-bottom: var(--spacing-md);
}

.section-header p {
  font-size: 1.125rem;
}

.section-alt {
  background: var(--color-bg-secondary);
}

/* ========================================
   Cards
   ======================================== */
.card {
  background: var(--color-bg-primary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  transition: all var(--transition-base);
}

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

.card-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-accent-light);
  border-radius: var(--radius-lg);
  margin-bottom: var(--spacing-md);
  color: var(--color-accent);
}

.card-icon svg {
  width: 24px;
  height: 24px;
}

.card h3 {
  margin-bottom: var(--spacing-sm);
}

.card p {
  font-size: 0.9375rem;
  line-height: 1.6;
}

/* Grid Layouts */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-xl);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-xl);
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-xl);
}

/* ========================================
   Value Cards Section
   ======================================== */
.value-card {
  text-align: center;
  padding: var(--spacing-2xl);
}

.value-card .card-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--spacing-lg);
}

.value-card .card-icon svg {
  width: 32px;
  height: 32px;
}

/* ========================================
   Comparison Section
   ======================================== */
.comparison-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-xl);
}

.comparison-card {
  padding: var(--spacing-2xl);
}

.comparison-card.self {
  background: var(--color-bg-secondary);
  border-color: var(--color-border);
}

.comparison-card.managed {
  background: var(--color-accent-light);
  border-color: var(--color-accent);
}

.comparison-card h3 {
  margin-bottom: var(--spacing-lg);
}

.comparison-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.comparison-list li {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
}

.comparison-list li svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.comparison-card.managed .comparison-list li svg {
  color: var(--color-accent);
}

.comparison-card.managed .comparison-list li {
  color: var(--color-text-primary);
}

/* ========================================
   Process Section
   ======================================== */
.process-steps {
  display: flex;
  justify-content: space-between;
  position: relative;
  margin-bottom: var(--spacing-3xl);
}

.process-steps::before {
  content: '';
  position: absolute;
  top: 24px;
  left: 48px;
  right: 48px;
  height: 2px;
  background: var(--color-border);
}

.process-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  position: relative;
  flex: 1;
}

.process-step-number {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-primary);
  border: 2px solid var(--color-accent);
  border-radius: 50%;
  color: var(--color-accent);
  font-weight: 600;
  margin-bottom: var(--spacing-md);
  position: relative;
  z-index: 1;
}

.process-step h4 {
  margin-bottom: var(--spacing-xs);
  font-size: 1rem;
}

.process-step p {
  font-size: 0.875rem;
  max-width: 140px;
}

/* ========================================
   Pricing Section
   ======================================== */
.pricing-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-xl);
  align-items: start;
}

.pricing-card {
  padding: var(--spacing-2xl);
  position: relative;
}

.pricing-card.featured {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-xl);
  transform: scale(1.02);
}

.pricing-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  padding: 4px 16px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: var(--radius-full);
  background: var(--color-success);
  color: #FFFFFF;
}

.pricing-badge.premium {
  background: var(--color-warning);
}

.pricing-header {
  text-align: center;
  padding-bottom: var(--spacing-xl);
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--spacing-xl);
}

.pricing-header h3 {
  margin-bottom: var(--spacing-sm);
}

.pricing-price {
  font-size: 3rem;
  font-weight: 700;
  color: var(--color-text-primary);
}

.pricing-price span {
  font-size: 1rem;
  font-weight: 400;
  color: var(--color-text-muted);
}

.pricing-features {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
}

.pricing-features li {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
}

.pricing-features li svg {
  width: 20px;
  height: 20px;
  color: var(--color-accent);
  flex-shrink: 0;
  margin-top: 2px;
}

.pricing-features li.disabled {
  color: var(--color-text-muted);
}

.pricing-features li.disabled svg {
  color: var(--color-text-muted);
}

/* ========================================
   Table Styles
   ======================================== */
.table-wrapper {
  overflow-x: auto;
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border);
}

.table {
  width: 100%;
  border-collapse: collapse;
  background: var(--color-bg-primary);
}

.table th,
.table td {
  padding: var(--spacing-md) var(--spacing-lg);
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

.table th {
  background: var(--color-bg-secondary);
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--color-text-primary);
}

.table td {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
}

.table tr:last-child td {
  border-bottom: none;
}

.table tr:hover td {
  background: var(--color-bg-secondary);
}

/* ========================================
   CTA Section
   ======================================== */
.cta-section {
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-hover) 100%);
  color: #FFFFFF;
  text-align: center;
  padding: var(--spacing-4xl) 0;
}

.cta-section h2 {
  color: #FFFFFF;
  margin-bottom: var(--spacing-md);
}

.cta-section p {
  color: rgba(255, 255, 255, 0.9);
  font-size: 1.125rem;
  margin-bottom: var(--spacing-xl);
}

.cta-section .btn {
  background: #FFFFFF;
  color: var(--color-accent);
}

.cta-section .btn:hover {
  background: var(--color-bg-secondary);
  transform: translateY(-2px);
}

/* ========================================
   Contact Section
   ======================================== */
.contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.contact-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.contact-item svg {
  width: 24px;
  height: 24px;
  color: var(--color-accent);
}

.contact-item span {
  font-size: 1rem;
  color: var(--color-text-primary);
}

.qr-code {
  text-align: center;
  padding: var(--spacing-xl);
  background: var(--color-bg-secondary);
  border-radius: var(--radius-xl);
}

.qr-code img {
  width: 200px;
  height: 200px;
  margin-bottom: var(--spacing-md);
}

.qr-code p {
  font-size: 0.875rem;
}

/* ========================================
   Footer
   ======================================== */
.footer {
  background: var(--color-text-primary);
  color: #FFFFFF;
  padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--spacing-2xl);
}

.footer-brand {
  max-width: 300px;
}

.footer-brand h3 {
  color: #FFFFFF;
  margin-bottom: var(--spacing-md);
}

.footer-brand p {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.875rem;
}

.footer-links {
  display: flex;
  gap: var(--spacing-4xl);
}

.footer-links-group h4 {
  color: #FFFFFF;
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--spacing-md);
}

.footer-links-group ul {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.footer-links-group a {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.875rem;
}

.footer-links-group a:hover {
  color: #FFFFFF;
}

.footer-bottom {
  padding-top: var(--spacing-xl);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-bottom p {
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.875rem;
}

/* ========================================
   Page Header
   ======================================== */
.page-header {
  padding: 140px 0 80px;
  background: linear-gradient(180deg, var(--color-bg-secondary) 0%, var(--color-bg-primary) 100%);
  text-align: center;
}

.page-header h1 {
  margin-bottom: var(--spacing-md);
}

.page-header p {
  font-size: 1.25rem;
  max-width: 600px;
  margin: 0 auto;
}

/* ========================================
   Timeline
   ======================================== */
.timeline {
  position: relative;
  padding-left: 40px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 15px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--color-border);
}

.timeline-item {
  position: relative;
  padding-bottom: var(--spacing-xl);
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-dot {
  position: absolute;
  left: -33px;
  top: 0;
  width: 12px;
  height: 12px;
  background: var(--color-accent);
  border-radius: 50%;
  border: 3px solid var(--color-bg-primary);
}

.timeline-content h4 {
  margin-bottom: var(--spacing-xs);
}

.timeline-content p {
  font-size: 0.9375rem;
}

/* ========================================
   FAQ Section
   ======================================== */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.faq-question {
  width: 100%;
  padding: var(--spacing-lg);
  background: none;
  border: none;
  text-align: left;
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-text-primary);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-question svg {
  width: 20px;
  height: 20px;
  color: var(--color-text-muted);
  transition: transform var(--transition-fast);
}

.faq-item.active .faq-question svg {
  transform: rotate(180deg);
}

.faq-answer {
  padding: 0 var(--spacing-lg) var(--spacing-lg);
  display: none;
}

.faq-item.active .faq-answer {
  display: block;
}

.faq-answer p {
  font-size: 0.9375rem;
  line-height: 1.7;
}

/* ========================================
   Badges & Tags
   ======================================== */
.tag {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  font-size: 0.75rem;
  font-weight: 500;
  border-radius: var(--radius-full);
  background: var(--color-bg-secondary);
  color: var(--color-text-secondary);
}

.tag-success {
  background: rgba(16, 185, 129, 0.1);
  color: var(--color-success);
}

.tag-warning {
  background: rgba(245, 158, 11, 0.1);
  color: var(--color-warning);
}

.tag-accent {
  background: var(--color-accent-light);
  color: var(--color-accent);
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 1024px) {
  h1 {
    font-size: 2.5rem;
  }

  h2 {
    font-size: 1.75rem;
  }

  .hero h1 {
    font-size: 2.75rem;
  }

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

  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .pricing-cards {
    grid-template-columns: 1fr;
    max-width: 400px;
    margin: 0 auto;
  }

  .pricing-card.featured {
    transform: none;
    order: -1;
  }

  .footer-content {
    flex-direction: column;
    gap: var(--spacing-2xl);
  }

  .footer-links {
    flex-wrap: wrap;
    gap: var(--spacing-2xl);
  }
}

@media (max-width: 768px) {
  .navbar-nav {
    display: none;
  }

  .mobile-menu-btn {
    display: block;
  }

  .hero {
    padding: 120px 0 60px;
  }

  .hero h1 {
    font-size: 2rem;
  }

  .hero-subtitle {
    font-size: 1rem;
  }

  .hero-features {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
  }

  .hero-feature-value {
    font-size: 1.75rem;
  }

  .section {
    padding: var(--spacing-3xl) 0;
  }

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

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

  .process-steps {
    flex-direction: column;
    gap: var(--spacing-xl);
  }

  .process-steps::before {
    display: none;
  }

  .process-step {
    flex-direction: row;
    text-align: left;
    gap: var(--spacing-md);
  }

  .process-step-number {
    margin-bottom: 0;
  }

  .process-step p {
    max-width: none;
  }

  .footer-bottom {
    flex-direction: column;
    gap: var(--spacing-md);
    text-align: center;
  }

  .table-wrapper {
    font-size: 0.875rem;
  }

  .table th,
  .table td {
    padding: var(--spacing-sm) var(--spacing-md);
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--spacing-md);
  }

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

  .hero-actions .btn {
    width: 100%;
  }

  .page-header {
    padding: 120px 0 60px;
  }

  .pricing-price {
    font-size: 2.5rem;
  }
}

/* ========================================
   Animations
   ======================================== */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  animation: fadeIn 0.6s ease forwards;
}

/* ========================================
   Utility Classes
   ======================================== */
.text-center {
  text-align: center;
}

.text-accent {
  color: var(--color-accent);
}

.mt-lg {
  margin-top: var(--spacing-lg);
}

.mb-lg {
  margin-bottom: var(--spacing-lg);
}

.mb-xl {
  margin-bottom: var(--spacing-xl);
}

.hidden {
  display: none !important;
}