/* ==========================================================================
   Flybit 飞鸟云 (flybit1.club) Design System & Stylesheet
   ========================================================================== */

:root {
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  
  /* Color Palette - Pastel Soft Gradient Theme */
  --bg-gradient: linear-gradient(135deg, #FFF4F7 0%, #F6ECFF 45%, #EFF4FE 100%);
  --primary-pink: #F4A7CD;
  --primary-purple: #B5A4FE;
  --primary-gradient: linear-gradient(135deg, #F4A3C9 0%, #B6A7FE 100%);
  --primary-gradient-hover: linear-gradient(135deg, #EE92BC 0%, #A291F9 100%);
  --accent-text-gradient: linear-gradient(135deg, #E279A8 0%, #7C6AE8 100%);
  
  --text-main: #2D2A4A;
  --text-muted: #6B688D;
  --text-light: #9B98BC;
  
  --glass-bg: rgba(255, 255, 255, 0.72);
  --glass-bg-hover: rgba(255, 255, 255, 0.88);
  --glass-border: rgba(255, 255, 255, 0.8);
  --glass-shadow: 0 12px 36px rgba(185, 160, 210, 0.12);
  --glass-shadow-hover: 0 20px 48px rgba(170, 140, 200, 0.2);
  
  --radius-sm: 12px;
  --radius-md: 20px;
  --radius-lg: 32px;
  --radius-pill: 9999px;
  
  --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

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

html {
  scroll-behavior: smooth;
  font-family: var(--font-family);
  background: #FFF4F7;
  color: var(--text-main);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

body {
  background: var(--bg-gradient);
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
}

/* Background Glowing Orbs */
.bg-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  z-index: 0;
  pointer-events: none;
  opacity: 0.6;
}

.bg-orb-1 {
  top: -100px;
  right: -50px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(244, 167, 205, 0.4) 0%, rgba(255, 255, 255, 0) 70%);
}

.bg-orb-2 {
  top: 400px;
  left: -150px;
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, rgba(181, 164, 254, 0.35) 0%, rgba(255, 255, 255, 0) 70%);
}

.bg-orb-3 {
  bottom: 200px;
  right: -100px;
  width: 650px;
  height: 650px;
  background: radial-gradient(circle, rgba(254, 210, 225, 0.4) 0%, rgba(255, 255, 255, 0) 70%);
}

.container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

/* ==========================================================================
   Header Navbar
   ========================================================================== */
.header {
  position: sticky;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 16px 0;
  transition: var(--transition);
}

.header.scrolled {
  background: rgba(255, 255, 255, 0.75);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.6);
  box-shadow: 0 4px 20px rgba(180, 160, 200, 0.08);
  padding: 12px 0;
}

.header-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.brand-logo {
  width: 42px;
  height: 42px;
  object-fit: contain;
  border-radius: 10px;
  transition: var(--transition);
}

.brand:hover .brand-logo {
  transform: scale(1.06) rotate(-3deg);
}

.brand-title {
  font-size: 1.35rem;
  font-weight: 800;
  background: var(--accent-text-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -0.5px;
}

.brand-subtitle {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-left: 2px;
}

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

.nav-link {
  text-decoration: none;
  color: var(--text-main);
  font-weight: 600;
  font-size: 0.95rem;
  transition: var(--transition);
  position: relative;
}

.nav-link:hover {
  color: #8C66F4;
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 24px;
  border-radius: var(--radius-pill);
  background: var(--primary-gradient);
  color: #FFFFFF;
  font-weight: 700;
  font-size: 0.95rem;
  text-decoration: none;
  box-shadow: 0 6px 18px rgba(220, 160, 220, 0.4);
  transition: var(--transition);
}

.nav-cta:hover {
  background: var(--primary-gradient-hover);
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(200, 140, 220, 0.5);
}

.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--text-main);
  cursor: pointer;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero {
  padding: 70px 0 90px;
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 40px;
  align-items: center;
}

.hero-content {
  max-width: 650px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: rgba(255, 255, 255, 0.85);
  border: 1px solid rgba(240, 200, 230, 0.8);
  border-radius: var(--radius-pill);
  font-size: 0.85rem;
  font-weight: 700;
  color: #B54BA6;
  margin-bottom: 24px;
  box-shadow: 0 4px 12px rgba(220, 180, 210, 0.15);
}

.hero-badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #E86DB5;
  box-shadow: 0 0 8px #E86DB5;
  animation: pulseDot 2s infinite;
}

@keyframes pulseDot {
  0% { transform: scale(0.9); opacity: 0.8; }
  50% { transform: scale(1.3); opacity: 1; }
  100% { transform: scale(0.9); opacity: 0.8; }
}

.hero-title {
  font-size: 3.2rem;
  font-weight: 900;
  line-height: 1.22;
  letter-spacing: -1px;
  color: #1F1B36;
  margin-bottom: 24px;
}

.hero-title-gradient {
  background: var(--accent-text-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;

}

.hero-desc {
  font-size: 1.12rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 36px;
}

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

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 15px 34px;
  border-radius: var(--radius-pill);
  background: var(--primary-gradient);
  color: #FFFFFF;
  font-weight: 700;
  font-size: 1.05rem;
  text-decoration: none;
  box-shadow: 0 8px 24px rgba(220, 150, 220, 0.45);
  transition: var(--transition);
  border: none;
  cursor: pointer;
}

.btn-primary:hover {
  background: var(--primary-gradient-hover);
  transform: translateY(-3px);
  box-shadow: 0 12px 30px rgba(200, 130, 210, 0.6);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 15px 28px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.9);
  color: var(--text-main);
  font-weight: 700;
  font-size: 1rem;
  text-decoration: none;
  border: 1px solid rgba(230, 210, 245, 0.9);
  box-shadow: 0 4px 16px rgba(190, 170, 210, 0.12);
  transition: var(--transition);
}

.btn-secondary:hover {
  background: #FFFFFF;
  border-color: #CBB6FE;
  color: #7C5BE4;
  transform: translateY(-2px);
  box-shadow: 0 8px 22px rgba(180, 150, 210, 0.2);
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 15px 26px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.6);
  color: var(--text-muted);
  font-weight: 700;
  font-size: 0.98rem;
  text-decoration: none;
  border: 1px solid rgba(220, 210, 235, 0.7);
  transition: var(--transition);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.95);
  color: var(--text-main);
  transform: translateY(-2px);
}

/* Hero Visual Cards Area */
.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 420px;
}

.hero-blob {
  position: absolute;
  width: 360px;
  height: 360px;
  background: linear-gradient(135deg, rgba(254, 215, 230, 0.8) 0%, rgba(220, 205, 254, 0.8) 100%);
  border-radius: 42% 58% 70% 30% / 45% 45% 55% 55%;
  filter: blur(10px);
  animation: blobFloat 8s ease-in-out infinite alternate;
}

@keyframes blobFloat {
  0% { border-radius: 42% 58% 70% 30% / 45% 45% 55% 55%; transform: rotate(0deg) scale(1); }
  100% { border-radius: 65% 35% 38% 62% / 55% 30% 70% 45%; transform: rotate(15deg) scale(1.05); }
}

.visual-cards {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  gap: 20px;
  width: 100%;
  max-width: 380px;
}

.glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  box-shadow: var(--glass-shadow);
  transition: var(--transition);
}

.glass-card:hover {
  background: var(--glass-bg-hover);
  transform: translateY(-5px) scale(1.02);
  box-shadow: var(--glass-shadow-hover);
}

.v-card-1 {
  align-self: flex-start;
  width: 88%;
}

.v-card-2 {
  align-self: flex-end;
  width: 92%;
  margin-top: -10px;
}

.v-card-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 6px;
}

.v-card-icon {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: linear-gradient(135deg, #FFEBF2 0%, #F0EAFF 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  box-shadow: 0 4px 10px rgba(200, 170, 220, 0.15);
}

.v-card-title {
  font-weight: 800;
  font-size: 1.05rem;
  color: var(--text-main);
}

.v-card-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-left: 56px;
}

/* ==========================================================================
   Features Section (核心优势)
   ========================================================================== */
.section {
  padding: 80px 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 56px;
}

.section-tag {
  display: inline-block;
  padding: 5px 16px;
  border-radius: var(--radius-pill);
  background: rgba(244, 167, 205, 0.2);
  color: #B23D8A;
  font-size: 0.85rem;
  font-weight: 800;
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.section-title {
  font-size: 2.3rem;
  font-weight: 800;
  color: #1F1B36;
  line-height: 1.3;
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-muted);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 28px;
}

.feature-card {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 32px 28px;
  box-shadow: var(--glass-shadow);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.feature-card:hover {
  transform: translateY(-6px);
  background: #FFFFFF;
  box-shadow: var(--glass-shadow-hover);
}

.feature-icon-box {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  background: var(--primary-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  color: #FFFFFF;
  box-shadow: 0 8px 20px rgba(230, 160, 220, 0.35);
}

.feature-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-main);
}

.feature-desc {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* ==========================================================================
   Streaming & AI Unblock Section (流媒体与AI服务)
   ========================================================================== */
.services-box {
  background: rgba(255, 255, 255, 0.65);
  backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.9);
  border-radius: var(--radius-lg);
  padding: 48px;
  box-shadow: var(--glass-shadow);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 20px;
  margin-top: 32px;
}

.service-item {
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(230, 220, 245, 0.7);
  border-radius: var(--radius-sm);
  padding: 20px 16px;
  text-align: center;
  transition: var(--transition);
}

.service-item:hover {
  transform: translateY(-4px);
  border-color: #B5A4FE;
  box-shadow: 0 10px 24px rgba(180, 160, 230, 0.18);
}

.service-icon {
  font-size: 2.2rem;
  margin-bottom: 10px;
}

.service-name {
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--text-main);
}

.service-status {
  font-size: 0.75rem;
  color: #10B981;
  font-weight: 600;
  margin-top: 4px;
}

/* ==========================================================================
   Pricing Section (套餐价格)
   ========================================================================== */
.pricing-toggle-container {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 44px;
}

.toggle-label {
  font-weight: 700;
  font-size: 1rem;
  color: var(--text-main);
}

.toggle-switch {
  position: relative;
  width: 60px;
  height: 32px;
  background: #E4DAF5;
  border-radius: 999px;
  cursor: pointer;
  padding: 4px;
  transition: var(--transition);
}

.toggle-switch.active {
  background: #B5A4FE;
}

.toggle-knob {
  width: 24px;
  height: 24px;
  background: #FFFFFF;
  border-radius: 50%;
  box-shadow: 0 2px 6px rgba(0,0,0,0.15);
  transition: var(--transition);
}

.toggle-switch.active .toggle-knob {
  transform: translateX(28px);
}

.discount-badge {
  background: linear-gradient(135deg, #FF6B9B 0%, #FF8E53 100%);
  color: #FFFFFF;
  font-size: 0.75rem;
  font-weight: 800;
  padding: 3px 10px;
  border-radius: var(--radius-pill);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 28px;
  align-items: stretch;
}

.price-card {
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  box-shadow: var(--glass-shadow);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  position: relative;
}

.price-card:hover {
  transform: translateY(-8px);
  background: #FFFFFF;
  box-shadow: var(--glass-shadow-hover);
}

.price-card.featured {
  background: rgba(255, 255, 255, 0.92);
  border: 2px solid #C7B5FF;
  box-shadow: 0 16px 40px rgba(181, 164, 254, 0.25);
}

.popular-ribbon {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--primary-gradient);
  color: #FFFFFF;
  font-size: 0.8rem;
  font-weight: 800;
  padding: 4px 18px;
  border-radius: var(--radius-pill);
  box-shadow: 0 4px 12px rgba(220, 150, 220, 0.4);
}

.price-header {
  margin-bottom: 24px;

}

.price-title {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 6px;
}

.price-subtitle {
  font-size: 0.85rem;
  color: var(--text-muted);
}

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

.price-currency {
  font-size: 1.4rem;
  font-weight: 800;
  color: #7C5BE4;
}

.price-amount {
  font-size: 2.8rem;
  font-weight: 900;
  color: #1F1B36;
  line-height: 1;
}

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

.price-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 32px;
  flex-grow: 1;
}

.price-feature-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.92rem;
  color: var(--text-main);
}

.price-feature-icon {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: #E8F8F0;
  color: #10B981;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 900;
  flex-shrink: 0;
}

.price-btn {
  width: 100%;
  text-align: center;
}

/* ==========================================================================
   Articles Grid Section (机场推荐与 SEO 文章库)
   ========================================================================== */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 28px;
}

.article-card {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 28px;
  box-shadow: var(--glass-shadow);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.article-card:hover {
  transform: translateY(-5px);
  background: #FFFFFF;
  box-shadow: var(--glass-shadow-hover);
}

.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 14px;
}

.article-tag {
  background: rgba(240, 230, 255, 0.8);
  color: #7C5BE4;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 6px;
}

.article-title {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 12px;
  line-height: 1.4;
}

.article-title a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition);
}

.article-title a:hover {
  color: #8C66F4;
}

.article-excerpt {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 20px;

}

.article-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid rgba(230, 220, 245, 0.6);
  padding-top: 14px;
  font-size: 0.82rem;
  color: var(--text-light);
}

.article-read-link {
  color: #7C5BE4;
  font-weight: 700;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: var(--transition);
}

.article-read-link:hover {
  color: #A24FB7;
  gap: 8px;
}

/* ==========================================================================
   User Reviews Section (用户评价)
   ========================================================================== */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.review-card {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 28px;
  box-shadow: var(--glass-shadow);
  transition: var(--transition);
}

.review-card:hover {
  transform: translateY(-4px);
  background: #FFFFFF;
}

.review-stars {
  color: #FBBF24;
  font-size: 1rem;
  margin-bottom: 12px;
}

.review-text {
  font-size: 0.95rem;
  color: var(--text-main);
  line-height: 1.65;
  margin-bottom: 20px;
}

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

.review-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--primary-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #FFFFFF;
  font-weight: 800;
  font-size: 1.1rem;
}

.review-name {
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--text-main);
}

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

/* ==========================================================================
   FAQ Section (常见问题)
   ========================================================================== */
.faq-accordion {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--glass-shadow);
  transition: var(--transition);
}

.faq-item.active {
  background: #FFFFFF;
}

.faq-question {
  width: 100%;
  padding: 22px 28px;
  background: none;
  border: none;
  text-align: left;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-main);
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  gap: 16px;
}

.faq-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(240, 230, 255, 0.8);
  color: #7C5BE4;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  transition: var(--transition);
  flex-shrink: 0;
}

.faq-item.active .faq-icon {
  transform: rotate(180deg);
  background: #7C5BE4;
  color: #FFFFFF;
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease-out, padding 0.35s ease;
  padding: 0 28px;
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.7;
}

.faq-item.active .faq-answer {
  max-height: 300px;
  padding: 0 28px 24px;
}

/* ==========================================================================
   Article Detail Page Template Styles
   ========================================================================== */
.article-page-body {
  background: var(--bg-gradient);
}

.article-container {
  max-width: 900px;
  margin: 40px auto 80px;
  padding: 0 24px;
}

.article-main-card {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.9);
  border-radius: var(--radius-lg);
  padding: 48px;
  box-shadow: 0 16px 40px rgba(180, 160, 210, 0.15);
}

.article-header {
  margin-bottom: 36px;
  border-bottom: 1px solid rgba(230, 220, 245, 0.7);
  padding-bottom: 24px;
}

.article-page-title {
  font-size: 2.2rem;
  font-weight: 900;
  color: #1F1B36;
  line-height: 1.3;
  margin-bottom: 16px;
}

.article-meta-info {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 0.9rem;
  color: var(--text-muted);
  flex-wrap: wrap;
}

.article-content {
  font-size: 1.05rem;
  color: #33314B;
  line-height: 1.85;
}

.article-content h2 {
  font-size: 1.55rem;
  font-weight: 800;
  color: #1F1B36;
  margin: 36px 0 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid rgba(244, 167, 205, 0.4);
}

.article-content h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: #433878;
  margin: 24px 0 12px;
}

.article-content p {
  margin-bottom: 18px;
}

.article-content ul, .article-content ol {
  margin: 0 0 20px 24px;
}

.article-content li {
  margin-bottom: 8px;
}

.article-cta-box {
  margin: 40px 0;
  padding: 28px;
  background: linear-gradient(135deg, #FFF0F6 0%, #F3ECFF 100%);
  border: 1px solid rgba(230, 190, 240, 0.8);
  border-radius: var(--radius-md);
  text-align: center;
}

.article-cta-title {
  font-size: 1.3rem;
  font-weight: 800;
  color: #1F1B36;
  margin-bottom: 10px;
}

.article-cta-desc {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.internal-links-nav {
  margin-top: 50px;
  padding-top: 28px;
  border-top: 1px solid rgba(230, 220, 245, 0.8);
}

.internal-links-title {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 16px;
}

.internal-links-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 12px;
  list-style: none;
}

.internal-links-list a {
  display: block;
  padding: 10px 14px;
  background: rgba(245, 240, 255, 0.7);
  border-radius: 8px;
  color: #6C4ECF;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9rem;
  transition: var(--transition);
}

.internal-links-list a:hover {
  background: #FFFFFF;
  box-shadow: 0 4px 12px rgba(180, 150, 220, 0.15);
  color: #A24FB7;
}

/* ==========================================================================
   Footer Section & PBN Link Hub (核心任务 2)
   ========================================================================== */
.footer {
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-top: 1px solid rgba(240, 230, 255, 0.8);
  padding: 40px 0 24px;
  margin-top: 80px;
  text-align: center;
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.footer-logo {
  width: 32px;
  height: 32px;
  border-radius: 8px;
}

.footer-title {
  font-size: 1.15rem;
  font-weight: 800;
  background: var(--accent-text-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.footer-copyright {
  font-size: 0.88rem;
  color: var(--text-muted);
}

/* PBN Friend Link Hub - Low Profile SEO Backlinks */
.pbn-links-area {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px dashed rgba(220, 210, 240, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  flex-wrap: wrap;
}

.pbn-link-label {
  font-size: 0.82rem;
  color: var(--text-light);
  font-weight: 600;
}

.pbn-link {
  font-size: 0.83rem;
  color: #7C6AE8;
  text-decoration: none;
  font-weight: 600;
  opacity: 0.85;
  transition: var(--transition);
}

.pbn-link:hover {
  opacity: 1;
  color: #E279A8;
  text-decoration: underline;
}

/* Back To Top Button */
.back-to-top {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--primary-gradient);
  color: #FFFFFF;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  box-shadow: 0 6px 20px rgba(200, 140, 220, 0.4);
  cursor: pointer;
  border: none;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  z-index: 99;
}

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

.back-to-top:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 26px rgba(180, 120, 210, 0.5);
}

/* ==========================================================================
   Responsive Breakpoints
   ========================================================================== */
@media (max-width: 992px) {
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 48px;
  }
  
  .hero-content {
    max-width: 100%;
  }

  .hero-actions {
    justify-content: center;
  }
  
  .hero-title {
    font-size: 2.5rem;
  }
  
  .v-card-1, .v-card-2 {
    width: 100%;
    margin-top: 0;
  }
}

@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    top: 70px;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.96);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 24px;
    gap: 20px;
    border-bottom: 1px solid rgba(230, 220, 245, 0.8);
    box-shadow: 0 10px 30px rgba(180, 160, 200, 0.15);
    display: none;
  }
  
  .nav-menu.open {
    display: flex;
  }
  
  .mobile-menu-toggle {
    display: block;
  }
  
  .hero-title {
    font-size: 2.1rem;
  }

  .section-title {
    font-size: 1.8rem;
  }

  .article-main-card {
    padding: 24px;
  }
}


/* ==========================================================================
   Flying Birds Background Decor (飞鸟背景微动画)
   ========================================================================== */
.birds-container {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
  overflow: hidden;
}

.flying-bird {
  position: absolute;
  pointer-events: none;
  opacity: 0.7;
  filter: drop-shadow(0 6px 16px rgba(180, 140, 220, 0.3));
  transition: transform 0.5s ease;
}

.flying-bird svg {
  width: 100%;
  height: 100%;
}

.bird-1 {
  top: 6%;
  left: 3%;
  width: 64px;
  height: 64px;
  animation: flyFloat1 8s ease-in-out infinite;
}

.bird-2 {
  top: 18%;
  left: 44%;
  width: 48px;
  height: 48px;
  animation: flyFloat2 10s ease-in-out infinite 1s;
}

.bird-3 {
  top: 8%;
  right: 5%;
  width: 72px;
  height: 72px;
  animation: flyFloat1 9s ease-in-out infinite 2s;
}

.bird-4 {
  top: 45%;
  right: 3%;
  width: 54px;
  height: 54px;
  animation: flyFloat2 11s ease-in-out infinite 0.5s;
}

.bird-5 {
  top: 70%;
  left: 5%;
  width: 58px;
  height: 58px;
  animation: flyFloat1 9.5s ease-in-out infinite 1.5s;
}

.bird-6 {
  top: 80%;
  right: 10%;
  width: 46px;
  height: 46px;
  animation: flyFloat2 8.5s ease-in-out infinite 3s;
}

@keyframes flyFloat1 {
  0% { transform: translateY(0px) translateX(0px) rotate(0deg); }
  50% { transform: translateY(-24px) translateX(18px) rotate(6deg) scale(1.08); }
  100% { transform: translateY(0px) translateX(0px) rotate(0deg); }
}

@keyframes flyFloat2 {
  0% { transform: translateY(0px) translateX(0px) rotate(0deg); }
  50% { transform: translateY(-30px) translateX(-20px) rotate(-7deg) scale(1.05); }
  100% { transform: translateY(0px) translateX(0px) rotate(0deg); }
}