@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Manrope:wght@400;500;600;700;800&display=swap');

:root {
  --bg-primary: #FFFFFF;
  --bg-secondary: #F8FAFC;
  --text-primary: #0F172A;
  --text-muted: #64748B;
  --border-color: #E2E8F0;
  --accent-blue: #3B82F6;
  --accent-blue-hover: #1D4ED8;
  --accent-cyan: #06B6D4;
  --card-radius: 12px;
  --btn-radius: 8px;
  --pill-radius: 999px;
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 4px 12px rgba(15, 23, 42, 0.06);
  --shadow-lg: 0 20px 40px rgba(15, 23, 42, 0.08);
  --font-heading: 'Manrope', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-body: 'Inter', 'PingFang SC', 'Microsoft YaHei', sans-serif;
}

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

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

body {
  font-family: var(--font-body);
  background-color: var(--bg-primary);
  color: var(--text-muted);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  color: var(--text-primary);
  letter-spacing: -0.02em;
  font-weight: 700;
  line-height: 1.25;
}

a {
  color: inherit;
  text-decoration: none;
  transition: all 0.2s ease;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-color);
  transition: background 0.3s ease;
}

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

.logo-group {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, #3B82F6 0%, #1D4ED8 100%);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #FFFFFF;
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: -1px;
  box-shadow: 0 4px 10px rgba(59, 130, 246, 0.3);
}

.logo-text {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.03em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-muted);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--accent-blue);
}

.nav-badge {
  background: #EFF6FF;
  color: var(--accent-blue);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: var(--pill-radius);
  margin-left: 4px;
  border: 1px solid #BFDBFE;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--btn-radius);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
  white-space: nowrap;
}

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

.btn-pill-dark {
  background: var(--text-primary);
  color: #FFFFFF;
  padding: 10px 22px;
  border-radius: var(--pill-radius);
  font-size: 0.9rem;
}

.btn-pill-dark:hover {
  background: #1E293B;
  box-shadow: var(--shadow-md);
  color: #FFFFFF;
}

.btn-primary {
  background: var(--accent-blue);
  color: #FFFFFF;
  box-shadow: 0 4px 14px rgba(59, 130, 246, 0.35);
}

.btn-primary:hover {
  background: var(--accent-blue-hover);
  box-shadow: 0 6px 20px rgba(59, 130, 246, 0.45);
  color: #FFFFFF;
}

.btn-ghost {
  background: #FFFFFF;
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-ghost:hover {
  background: var(--bg-secondary);
  border-color: #CBD5E1;
}

.btn-blog {
  background: linear-gradient(135deg, #10B981 0%, #059669 100%);
  color: #FFFFFF;
  box-shadow: 0 4px 14px rgba(16, 185, 129, 0.3);
}

.btn-blog:hover {
  background: linear-gradient(135deg, #059669 0%, #047857 100%);
  box-shadow: 0 6px 20px rgba(16, 185, 129, 0.45);
  color: #FFFFFF;
}

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

.btn-white:hover {
  background: #F1F5F9;
}

/* Sections */
section {
  padding: 80px 0;
}

.section-tag {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--accent-blue);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 12px;
}

.section-head {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 56px;
}

.section-head h2 {
  font-size: 2.25rem;
  margin-bottom: 16px;
}

.section-head p {
  font-size: 1.05rem;
}

/* Hero Section */
.hero-section {
  padding: 90px 0 70px;
  text-align: center;
  background: radial-gradient(circle at 50% 20%, rgba(59, 130, 246, 0.07) 0%, rgba(255, 255, 255, 0) 70%);
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 16px;
  background: #EFF6FF;
  border: 1px solid #BFDBFE;
  border-radius: var(--pill-radius);
  font-size: 0.85rem;
  font-weight: 600;
  color: #1E40AF;
  margin-bottom: 28px;
}

.status-dot {
  width: 8px;
  height: 8px;
  background-color: #10B981;
  border-radius: 50%;
  position: relative;
}

.status-dot::after {
  content: '';
  position: absolute;
  top: -2px;
  left: -2px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: rgba(16, 185, 129, 0.4);
  animation: pulse 2s infinite ease-out;
}

@keyframes pulse {
  0% { transform: scale(0.9); opacity: 0.9; }
  70% { transform: scale(2.2); opacity: 0; }
  100% { transform: scale(2.2); opacity: 0; }
}

.hero-title {
  font-size: 3.5rem;
  line-height: 1.15;
  margin-bottom: 24px;
  font-weight: 800;
}

.hero-title .accent {
  color: var(--accent-blue);
  background: linear-gradient(135deg, #3B82F6 0%, #1D4ED8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subhead {
  font-size: 1.25rem;
  max-width: 760px;
  margin: 0 auto 36px;
  line-height: 1.6;
}

.hero-ctas {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}

.hero-footnote {
  font-size: 0.85rem;
  color: #94A3B8;
}

/* Stats Row */
.stats-section {
  padding: 20px 0 60px;
}

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

.stat-card {
  background: #FFFFFF;
  border: 1px solid var(--border-color);
  border-radius: var(--card-radius);
  padding: 28px 24px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.stat-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.stat-number {
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.1;
  margin-bottom: 6px;
  font-family: var(--font-heading);
}

.stat-label {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* Features Grid */
.features-section {
  background: var(--bg-secondary);
}

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

.feature-card {
  background: #FFFFFF;
  border: 1px solid var(--border-color);
  border-radius: var(--card-radius);
  padding: 32px 28px;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: #CBD5E1;
}

.feature-icon-box {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: linear-gradient(135deg, #EFF6FF 0%, #DBEAFE 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-blue);
  margin-bottom: 20px;
  font-size: 1.4rem;
}

.feature-card h3 {
  font-size: 1.25rem;
  margin-bottom: 10px;
}

.feature-card p {
  font-size: 0.95rem;
  line-height: 1.6;
}

/* Streaming & AI Cards */
.media-ai-section {
  padding: 80px 0;
}

.grid-2col {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.service-card {
  background: #FFFFFF;
  border: 1px solid var(--border-color);
  border-radius: var(--card-radius);
  padding: 36px 32px;
  box-shadow: var(--shadow-sm);
}

.service-card h3 {
  font-size: 1.35rem;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.badge-stream {
  background: #FEF2F2;
  color: #DC2626;
  border: 1px solid #FECACA;
  font-size: 0.75rem;
  padding: 2px 8px;
  border-radius: var(--pill-radius);
}

.badge-ai {
  background: #F0FDF4;
  color: #16A34A;
  border: 1px solid #BBF7D0;
  font-size: 0.75rem;
  padding: 2px 8px;
  border-radius: var(--pill-radius);
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 20px 0;
}

.tag-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  padding: 6px 14px;
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
}

/* Pricing Section */
.pricing-section {
  background: var(--bg-secondary);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.pricing-card {
  background: #FFFFFF;
  border: 1px solid var(--border-color);
  border-radius: var(--card-radius);
  padding: 32px 24px;
  position: relative;
  display: flex;
  flex-direction: column;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  box-shadow: var(--shadow-sm);
}

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

.pricing-card.featured {
  border: 2px solid var(--accent-blue);
  box-shadow: 0 10px 30px rgba(59, 130, 246, 0.15);
}

.popular-badge {
  position: absolute;
  top: -13px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent-blue);
  color: #FFFFFF;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 14px;
  border-radius: var(--pill-radius);
  letter-spacing: 0.05em;
}

.pricing-tier {
  font-size: 1.25rem;
  margin-bottom: 6px;
}

.pricing-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  min-height: 40px;
}

.pricing-price {
  margin: 20px 0;
  display: flex;
  align-items: baseline;
  gap: 4px;
}

.price-currency {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
}

.price-number {
  font-size: 3rem;
  font-weight: 800;
  color: var(--text-primary);
  font-family: var(--font-heading);
  line-height: 1;
}

.price-period {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.pricing-features {
  list-style: none;
  margin: 0 0 28px;
  padding: 0;
  flex-grow: 1;
}

.pricing-features li {
  font-size: 0.9rem;
  padding: 8px 0;
  border-bottom: 1px dashed #F1F5F9;
  display: flex;
  align-items: center;
  gap: 8px;
  color: #334155;
}

.pricing-features li svg {
  flex-shrink: 0;
  color: #10B981;
}

/* FAQ Section */
.faq-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  max-width: 1040px;
  margin: 0 auto;
}

.faq-card {
  background: #FFFFFF;
  border: 1px solid var(--border-color);
  border-radius: var(--card-radius);
  padding: 24px;
}

.faq-card h3 {
  font-size: 1.1rem;
  margin-bottom: 10px;
}

.faq-card p {
  font-size: 0.92rem;
  line-height: 1.6;
}

/* Reviews / Testimonials */
.testimonials-section {
  background: var(--bg-secondary);
}

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

.testimonial-card {
  background: #FFFFFF;
  border: 1px solid var(--border-color);
  border-radius: var(--card-radius);
  padding: 28px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.stars {
  color: #F59E0B;
  font-size: 1rem;
  margin-bottom: 14px;
}

.testimonial-text {
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: 20px;
  color: #334155;
}

.user-info {
  display: flex;
  align-items: center;
  gap: 12px;
}

.user-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: #E2E8F0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: #475569;
}

.user-meta h4 {
  font-size: 0.95rem;
  color: var(--text-primary);
}

.user-meta span {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* CTA Band */
.cta-band-section {
  padding: 60px 0 80px;
}

.cta-band {
  background: linear-gradient(135deg, #0F172A 0%, #1E293B 100%);
  border-radius: 24px;
  padding: 64px 48px;
  text-align: center;
  color: #FFFFFF;
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}

.cta-band h2 {
  color: #FFFFFF;
  font-size: 2.25rem;
  margin-bottom: 16px;
}

.cta-band p {
  color: #94A3B8;
  font-size: 1.1rem;
  max-width: 620px;
  margin: 0 auto 32px;
}

.cta-band-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* Footer (strictly 4 titles opening in new tab) */
.site-footer {
  background: #FFFFFF;
  border-top: 1px solid var(--border-color);
  padding: 48px 0 36px;
}

.footer-nav {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 40px;
  list-style: none;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.footer-nav li a {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  padding: 8px 12px;
  border-radius: 6px;
}

.footer-nav li a:hover {
  color: var(--accent-blue);
  background: var(--bg-secondary);
}

.footer-bottom {
  text-align: center;
  font-size: 0.85rem;
  color: #94A3B8;
  border-top: 1px solid #F1F5F9;
  padding-top: 24px;
}

/* Content Pages (About, Terms, Privacy, Sitemap, News) */
.page-header {
  padding: 60px 0 40px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  text-align: center;
}

.page-header h1 {
  font-size: 2.5rem;
  margin-bottom: 12px;
}

.page-content {
  padding: 60px 0 80px;
}

.prose {
  max-width: 800px;
  margin: 0 auto;
  font-size: 1rem;
  line-height: 1.8;
  color: #334155;
}

.prose h2 {
  font-size: 1.6rem;
  margin: 40px 0 16px;
  border-bottom: 2px solid #F1F5F9;
  padding-bottom: 8px;
}

.prose h3 {
  font-size: 1.25rem;
  margin: 24px 0 12px;
}

.prose p {
  margin-bottom: 18px;
}

.prose ul, .prose ol {
  margin: 0 0 20px 24px;
}

.prose li {
  margin-bottom: 8px;
}

.prose a {
  color: var(--accent-blue);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.prose blockquote {
  border-left: 4px solid var(--accent-blue);
  background: #F8FAFC;
  padding: 16px 20px;
  border-radius: 0 8px 8px 0;
  margin: 24px 0;
  font-style: italic;
  color: #475569;
}

/* Articles listing cards */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 36px;
}

.article-card {
  background: #FFFFFF;
  border: 1px solid var(--border-color);
  border-radius: var(--card-radius);
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  box-shadow: var(--shadow-sm);
}

.article-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: #CBD5E1;
}

.article-card h3 {
  font-size: 1.15rem;
  margin-bottom: 12px;
  line-height: 1.4;
}

.article-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 20px;
  flex-grow: 1;
}

.article-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: #94A3B8;
  border-top: 1px solid #F1F5F9;
  padding-top: 14px;
}

.read-more {
  color: var(--accent-blue);
  font-weight: 600;
  font-size: 0.85rem;
}

/* Mobile Responsive */
@media (max-width: 992px) {
  .hero-title {
    font-size: 2.75rem;
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .pricing-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .articles-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .nav-wrap {
    height: auto;
    padding: 14px 0;
    flex-direction: column;
    gap: 14px;
  }
  .nav-links {
    gap: 16px;
    flex-wrap: wrap;
    justify-content: center;
  }
  .hero-section {
    padding: 50px 0 40px;
  }
  .hero-title {
    font-size: 2.1rem;
  }
  .hero-subhead {
    font-size: 1.05rem;
  }
  .hero-ctas {
    flex-direction: column;
    width: 100%;
  }
  .btn {
    width: 100%;
    padding: 14px 20px;
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .features-grid {
    grid-template-columns: 1fr;
  }
  .grid-2col {
    grid-template-columns: 1fr;
  }
  .pricing-grid {
    grid-template-columns: 1fr;
  }
  .faq-grid {
    grid-template-columns: 1fr;
  }
  .testimonials-grid {
    grid-template-columns: 1fr;
  }
  .articles-grid {
    grid-template-columns: 1fr;
  }
  .cta-band {
    padding: 40px 20px;
  }
  .cta-band h2 {
    font-size: 1.65rem;
  }
  .footer-nav {
    flex-direction: column;
    gap: 12px;
  }
}