/* ==========================================================================
   大象网络 (Daxiang Cloud) - 高端奢华风格主样式表
   Palette:
     - 背景深炭黑: #0c0c10
     - 细腻金/香槟金: #d4b36a / #e6cc8f / #9e7f3d
     - 象牙白正文: #f2efe9
     - 浅灰文字: #a39f97
     - 发丝线: rgba(212, 179, 106, 0.2)
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Playfair+Display:ital,wght@0,400;0,600;0,700;1,400;1,600;1,700&display=swap');

:root {
  --bg-primary: #0c0c10;
  --bg-secondary: #131318;
  --bg-tertiary: #191920;
  --accent-gold: #d4b36a;
  --accent-gold-light: #f3dfa2;
  --accent-gold-dark: #8c7340;
  --gold-hairline: rgba(212, 179, 106, 0.22);
  --gold-glow: rgba(212, 179, 106, 0.15);
  --text-ivory: #f2efe9;
  --text-muted: #a39f97;
  --text-dim: #6c6962;
  --font-serif: 'Playfair Display', Georgia, serif;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --container-width: 1180px;
  --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  background-color: var(--bg-primary);
  color: var(--text-ivory);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  position: relative;
  background: var(--bg-primary);
  background-image: 
    radial-gradient(circle at 50% 0%, rgba(212, 179, 106, 0.06) 0%, transparent 60%),
    radial-gradient(circle at 80% 40%, rgba(212, 179, 106, 0.03) 0%, transparent 40%),
    radial-gradient(circle at 20% 80%, rgba(212, 179, 106, 0.03) 0%, transparent 50%);
  overflow-x: hidden;
}

/* Scroll Progress Bar */
#scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-gold-dark), var(--accent-gold-light), var(--accent-gold));
  width: 0%;
  z-index: 9999;
  transition: width 0.1s ease-out;
  box-shadow: 0 0 8px var(--accent-gold);
}

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

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

.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* Typography Helpers */
.font-serif {
  font-family: var(--font-serif);
}

.font-italic {
  font-style: italic;
}

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

.gold-gradient-text {
  background: linear-gradient(135deg, #f8ecc4 0%, #d4b36a 50%, #9e7f3d 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Header & Slender Centered Nav */
.header-nav {
  position: sticky;
  top: 0;
  background: rgba(12, 12, 16, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--gold-hairline);
  z-index: 1000;
  transition: var(--transition-smooth);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: 1px;
}

.brand-monogram {
  width: 38px;
  height: 38px;
  border: 1px solid var(--accent-gold);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.95rem;
  font-style: italic;
  color: var(--accent-gold);
  background: rgba(212, 179, 106, 0.05);
  box-shadow: inset 0 0 10px rgba(212, 179, 106, 0.1);
}

.nav-menu {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 36px;
}

.nav-link {
  font-size: 0.92rem;
  letter-spacing: 0.8px;
  color: var(--text-ivory);
  position: relative;
  padding: 6px 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 1px;
  background-color: var(--accent-gold);
  transition: width 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

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

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.btn-gold-sm {
  padding: 8px 20px;
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 1px;
  color: var(--accent-gold);
  border: 1px solid var(--accent-gold);
  background: transparent;
  border-radius: 2px;
  transition: var(--transition-smooth);
}

.btn-gold-sm:hover {
  background: var(--accent-gold);
  color: #0c0c10;
  box-shadow: 0 0 16px rgba(212, 179, 106, 0.4);
}

/* Hero Section */
.hero-section {
  position: relative;
  min-height: calc(100vh - 76px);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 80px 0 100px;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 18px;
  border: 1px solid var(--gold-hairline);
  border-radius: 40px;
  background: rgba(212, 179, 106, 0.04);
  font-size: 0.85rem;
  letter-spacing: 1.5px;
  color: var(--accent-gold);
  margin-bottom: 28px;
  text-transform: uppercase;
}

.hero-title {
  font-family: var(--font-serif);
  font-size: 3.5rem;
  line-height: 1.25;
  font-weight: 700;
  font-style: italic;
  margin-bottom: 24px;
  max-width: 960px;
  margin-left: auto;
  margin-right: auto;
}

.hero-subtitle {
  font-size: 1.15rem;
  line-height: 1.8;
  color: var(--text-muted);
  max-width: 780px;
  margin: 0 auto 40px;
  font-weight: 300;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
  margin-bottom: 50px;
}

/* Sweeping light CTA button */
.btn-gold-luxury {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 16px 40px;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 1.5px;
  color: #0c0c10;
  background: linear-gradient(135deg, #f3dfa2, #d4b36a 60%, #b89347);
  border: 1px solid #e6cc8f;
  border-radius: 3px;
  cursor: pointer;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(212, 179, 106, 0.25);
  transition: var(--transition-smooth);
}

.btn-gold-luxury::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -100%;
  width: 60%;
  height: 200%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.6),
    transparent
  );
  transform: rotate(25deg);
  transition: none;
}

.btn-gold-luxury:hover::before {
  left: 200%;
  transition: all 0.9s cubic-bezier(0.19, 1, 0.22, 1);
}

.btn-gold-luxury:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(212, 179, 106, 0.45);
}

/* Inspection Button (Clean dofollow, no nofollow) */
.btn-check-dofollow {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 16px 32px;
  font-size: 0.96rem;
  font-weight: 500;
  letter-spacing: 0.8px;
  color: var(--text-ivory);
  background: rgba(25, 25, 32, 0.6);
  border: 1px solid var(--gold-hairline);
  border-radius: 3px;
  transition: var(--transition-smooth);
  backdrop-filter: blur(8px);
}

.btn-check-dofollow:hover {
  background: rgba(212, 179, 106, 0.1);
  border-color: var(--accent-gold);
  color: var(--accent-gold-light);
  transform: translateY(-2px);
}

.hero-meta-badges {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 32px;
  color: var(--text-muted);
  font-size: 0.88rem;
  flex-wrap: wrap;
}

.badge-item {
  display: flex;
  align-items: center;
  gap: 8px;
}

.badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--accent-gold);
  box-shadow: 0 0 6px var(--accent-gold);
}

/* Hairline Section Divider */
.hairline-divider {
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold-hairline) 20%, var(--gold-hairline) 80%, transparent);
  margin: 0;
}

/* Large Serif Italic Data Display */
.stats-section {
  padding: 70px 0;
  background: var(--bg-secondary);
  border-top: 1px solid var(--gold-hairline);
  border-bottom: 1px solid var(--gold-hairline);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
  text-align: center;
}

.stat-item {
  padding: 20px 10px;
  border-right: 1px solid var(--gold-hairline);
}

.stat-item:last-child {
  border-right: none;
}

.stat-number {
  font-family: var(--font-serif);
  font-size: 3.2rem;
  font-style: italic;
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 8px;
}

.stat-label {
  font-size: 0.9rem;
  letter-spacing: 1px;
  color: var(--text-muted);
  text-transform: uppercase;
}

/* Editorial Feature Rows (Alternating with Roman Numerals) */
.features-section {
  padding: 110px 0;
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 80px;
}

.section-tag {
  display: inline-block;
  font-size: 0.82rem;
  letter-spacing: 2px;
  color: var(--accent-gold);
  text-transform: uppercase;
  margin-bottom: 12px;
}

.section-title {
  font-family: var(--font-serif);
  font-size: 2.6rem;
  font-style: italic;
  line-height: 1.3;
  margin-bottom: 18px;
}

.section-desc {
  font-size: 1.02rem;
  color: var(--text-muted);
  font-weight: 300;
}

.editorial-rows {
  display: flex;
  flex-direction: column;
}

.editorial-row {
  display: grid;
  grid-template-columns: 160px 1fr 1fr;
  align-items: center;
  padding: 60px 0;
  border-bottom: 1px solid var(--gold-hairline);
  gap: 40px;
  transition: var(--transition-smooth);
}

.editorial-row:first-child {
  border-top: 1px solid var(--gold-hairline);
}

.editorial-row:hover {
  background: rgba(212, 179, 106, 0.015);
}

.roman-numeral {
  font-family: var(--font-serif);
  font-size: 4rem;
  font-style: italic;
  font-weight: 700;
  color: rgba(212, 179, 106, 0.35);
  line-height: 1;
}

.feature-heading-col h3 {
  font-family: var(--font-serif);
  font-size: 1.7rem;
  line-height: 1.4;
  margin-bottom: 10px;
}

.feature-tagline {
  font-size: 0.88rem;
  color: var(--accent-gold);
  letter-spacing: 1px;
}

.feature-text-col p {
  color: var(--text-muted);
  font-size: 0.98rem;
  line-height: 1.8;
  margin-bottom: 16px;
}

.feature-highlights {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.feature-highlights li {
  font-size: 0.88rem;
  color: var(--text-ivory);
  display: flex;
  align-items: center;
  gap: 10px;
}

.feature-highlights li::before {
  content: "—";
  color: var(--accent-gold);
}

/* Streaming & AI Cards */
.media-ai-section {
  padding: 100px 0;
  background: var(--bg-secondary);
}

.cards-grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 36px;
  margin-top: 50px;
}

.luxury-card {
  background: var(--bg-tertiary);
  border: 1px solid var(--gold-hairline);
  padding: 44px;
  border-radius: 4px;
  position: relative;
  transition: var(--transition-smooth);
}

.luxury-card:hover {
  border-color: rgba(212, 179, 106, 0.5);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.6);
  transform: translateY(-4px);
}

.card-icon-wrap {
  width: 52px;
  height: 52px;
  border: 1px solid var(--accent-gold);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-gold);
  margin-bottom: 24px;
  background: rgba(212, 179, 106, 0.05);
}

.luxury-card h3 {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  margin-bottom: 14px;
}

.luxury-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.8;
  margin-bottom: 24px;
}

.app-pill-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.app-pill {
  padding: 6px 14px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(212, 179, 106, 0.15);
  border-radius: 20px;
  font-size: 0.82rem;
  color: var(--text-ivory);
  display: flex;
  align-items: center;
  gap: 6px;
}

/* Pricing Section */
.pricing-section {
  padding: 110px 0;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  align-items: stretch;
  margin-top: 60px;
}

.pricing-card {
  background: var(--bg-secondary);
  border: 1px solid var(--gold-hairline);
  border-radius: 4px;
  padding: 44px 36px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: var(--transition-smooth);
}

.pricing-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 35px rgba(0, 0, 0, 0.6);
}

/* Premium Tier with Gold Frame */
.pricing-card.premium-tier {
  background: linear-gradient(180deg, #18171f 0%, #121118 100%);
  border: 1.5px solid var(--accent-gold);
  box-shadow: 0 0 35px rgba(212, 179, 106, 0.18);
  transform: scale(1.03);
}

.pricing-card.premium-tier:hover {
  transform: scale(1.03) translateY(-6px);
  box-shadow: 0 0 45px rgba(212, 179, 106, 0.3);
}

.popular-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, #f3dfa2, #d4b36a);
  color: #0c0c10;
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 1.5px;
  padding: 4px 16px;
  border-radius: 20px;
  text-transform: uppercase;
}

.plan-tier-name {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  margin-bottom: 8px;
}

.plan-desc {
  font-size: 0.86rem;
  color: var(--text-muted);
  margin-bottom: 28px;
  min-height: 42px;
}

.plan-price-wrap {
  margin-bottom: 30px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--gold-hairline);
}

.price-currency {
  font-size: 1.4rem;
  color: var(--accent-gold);
  font-family: var(--font-serif);
}

.price-amount {
  font-family: var(--font-serif);
  font-size: 3.2rem;
  font-style: italic;
  font-weight: 700;
  line-height: 1;
  color: var(--text-ivory);
}

.price-period {
  font-size: 0.86rem;
  color: var(--text-muted);
  margin-left: 6px;
}

.plan-features-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 36px;
  flex-grow: 1;
}

.plan-features-list li {
  font-size: 0.9rem;
  color: var(--text-ivory);
  display: flex;
  align-items: center;
  gap: 12px;
}

.plan-features-list li svg {
  color: var(--accent-gold);
  flex-shrink: 0;
}

.btn-plan-action {
  width: 100%;
  padding: 14px 0;
  text-align: center;
  font-size: 0.94rem;
  font-weight: 600;
  letter-spacing: 1px;
  border-radius: 3px;
  border: 1px solid var(--gold-hairline);
  background: transparent;
  color: var(--text-ivory);
  transition: var(--transition-smooth);
}

.btn-plan-action:hover {
  border-color: var(--accent-gold);
  color: var(--accent-gold-light);
  background: rgba(212, 179, 106, 0.08);
}

.pricing-card.premium-tier .btn-plan-action {
  background: linear-gradient(135deg, #f3dfa2, #d4b36a);
  color: #0c0c10;
  border-color: #d4b36a;
}

.pricing-card.premium-tier .btn-plan-action:hover {
  box-shadow: 0 0 25px rgba(212, 179, 106, 0.5);
  transform: translateY(-2px);
}

/* User Testimonials */
.testimonials-section {
  padding: 100px 0;
  background: var(--bg-secondary);
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  margin-top: 50px;
}

.testimonial-card {
  background: var(--bg-tertiary);
  border: 1px solid var(--gold-hairline);
  padding: 36px;
  border-radius: 4px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.rating-stars {
  color: var(--accent-gold);
  margin-bottom: 16px;
  letter-spacing: 2px;
  font-size: 0.9rem;
}

.testimonial-quote {
  font-size: 0.94rem;
  line-height: 1.8;
  color: var(--text-ivory);
  margin-bottom: 24px;
  font-style: italic;
}

.user-meta {
  display: flex;
  align-items: center;
  gap: 14px;
}

.user-avatar-initial {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 1px solid var(--accent-gold);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  color: var(--accent-gold);
  background: rgba(212, 179, 106, 0.06);
}

.user-name {
  font-weight: 600;
  font-size: 0.94rem;
}

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

/* FAQ Accordion */
.faq-section {
  padding: 110px 0;
}

.faq-list {
  max-width: 860px;
  margin: 50px auto 0;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  border: 1px solid var(--gold-hairline);
  background: var(--bg-secondary);
  border-radius: 4px;
  overflow: hidden;
  transition: var(--transition-smooth);
}

.faq-item:hover {
  border-color: rgba(212, 179, 106, 0.4);
}

.faq-question {
  padding: 22px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--text-ivory);
}

.faq-icon {
  font-size: 1.4rem;
  color: var(--accent-gold);
  transition: transform 0.3s ease;
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0.16, 1, 0.3, 1), padding 0.3s ease;
  background: rgba(12, 12, 16, 0.5);
  padding: 0 28px;
}

.faq-item.active .faq-answer {
  max-height: 400px;
  padding: 0 28px 24px;
}

.faq-answer p {
  color: var(--text-muted);
  font-size: 0.94rem;
  line-height: 1.8;
}

/* Footer (ONLY 4 Titles: 网站地图, 关于我们, 服务条款, 隐私政策) */
.luxury-footer {
  background: #08080b;
  border-top: 1px solid var(--gold-hairline);
  padding: 70px 0 40px;
  text-align: center;
}

.footer-monogram {
  width: 50px;
  height: 50px;
  border: 1px solid var(--accent-gold);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 24px;
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-style: italic;
  color: var(--accent-gold);
  box-shadow: 0 0 15px rgba(212, 179, 106, 0.15);
}

.footer-nav-exact {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 40px;
  margin-bottom: 30px;
  list-style: none;
}

.footer-exact-link {
  font-size: 0.96rem;
  color: var(--text-ivory);
  letter-spacing: 1px;
  position: relative;
  padding: 4px 0;
}

.footer-exact-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 1px;
  background-color: var(--accent-gold);
  transition: width 0.3s ease;
}

.footer-exact-link:hover {
  color: var(--accent-gold);
}

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

.footer-copy {
  font-size: 0.82rem;
  color: var(--text-dim);
  letter-spacing: 0.8px;
}

/* Responsive Media Queries */
@media (max-width: 1024px) {
  .hero-title {
    font-size: 2.8rem;
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .stat-item:nth-child(2) {
    border-right: none;
  }
  .editorial-row {
    grid-template-columns: 100px 1fr;
    gap: 24px;
  }
  .feature-text-col {
    grid-column: 1 / -1;
  }
  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 500px;
    margin: 50px auto 0;
  }
  .pricing-card.premium-tier {
    transform: none;
  }
  .pricing-card.premium-tier:hover {
    transform: translateY(-6px);
  }
  .testimonials-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav-menu {
    display: none;
  }
  .hero-title {
    font-size: 2.2rem;
  }
  .hero-subtitle {
    font-size: 1rem;
  }
  .hero-cta-group {
    flex-direction: column;
    width: 100%;
  }
  .btn-gold-luxury, .btn-check-dofollow {
    width: 100%;
    text-align: center;
  }
  .stats-grid {
    grid-template-columns: 1fr;
  }
  .stat-item {
    border-right: none;
    border-bottom: 1px solid var(--gold-hairline);
  }
  .editorial-row {
    grid-template-columns: 1fr;
    text-align: left;
  }
  .cards-grid-2 {
    grid-template-columns: 1fr;
  }
  .footer-nav-exact {
    flex-direction: column;
    gap: 18px;
  }
}