/* ==========================================================================
   歪兔 Waitu.mom - 全局样式表
   包含: 暗黑霓诺玻璃拟态, 动漫科技风, 鼠标尾翼, 价格平铺一排布局, 响应式设计
   ========================================================================== */

:root {
  --bg-dark: #090a12;
  --bg-card: rgba(20, 22, 41, 0.75);
  --bg-card-hover: rgba(30, 34, 61, 0.85);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-glow: rgba(157, 78, 221, 0.4);
  
  --primary: #9d4edd;
  --primary-light: #c77dff;
  --accent-cyan: #00f5d4;
  --accent-pink: #f72585;
  --accent-gold: #ffb703;

  --text-main: #f8f9fa;
  --text-muted: #a0a5c0;
  --text-dim: #6c7293;

  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
  --radius-lg: 20px;
  --radius-md: 12px;
  --radius-sm: 8px;
}

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

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

body {
  background-color: var(--bg-dark);
  color: var(--text-main);
  font-family: var(--font-family);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
  background-image: 
    radial-gradient(circle at 15% 20%, rgba(157, 78, 221, 0.15) 0%, transparent 45%),
    radial-gradient(circle at 85% 60%, rgba(0, 245, 212, 0.12) 0%, transparent 45%),
    radial-gradient(circle at 50% 90%, rgba(247, 37, 133, 0.1) 0%, transparent 50%);
  background-attachment: fixed;
}

/* 鼠标尾翼/粒子拖尾 */
.trail-particle {
  position: fixed;
  pointer-events: none;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--accent-cyan) 0%, var(--primary-light) 100%);
  box-shadow: 0 0 10px var(--accent-cyan), 0 0 20px var(--primary-light);
  transform: translate(-50%, -50%);
  z-index: 9999;
  transition: opacity 0.5s ease, transform 0.5s ease;
  opacity: 0.8;
}

/* 容器与布局 */
.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 20px;
}

/* 顶部导航栏 */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 76px;
  background: rgba(9, 10, 18, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  z-index: 1000;
  display: flex;
  align-items: center;
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--text-main);
  font-weight: 800;
  font-size: 1.4rem;
}

.logo-badge {
  background: linear-gradient(135deg, var(--primary), var(--accent-pink));
  color: #fff;
  padding: 2px 8px;
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}

.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: var(--transition);
}

.nav-links a:hover {
  color: var(--accent-cyan);
  text-shadow: 0 0 8px rgba(0, 245, 212, 0.4);
}

.nav-cta {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* 按钮通用 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 50px;
  font-size: 0.95rem;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  outline: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent-pink) 100%);
  color: #fff;
  box-shadow: 0 6px 20px rgba(157, 78, 221, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(247, 37, 133, 0.5);
  filter: brightness(1.1);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-main);
  border: 1px solid rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
  transform: translateY(-2px);
}

/* Hero 核心视觉区 */
.hero {
  padding: 160px 0 80px;
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  align-items: center;
  gap: 40px;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: rgba(157, 78, 221, 0.15);
  border: 1px solid rgba(157, 78, 221, 0.3);
  border-radius: 50px;
  color: var(--primary-light);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 20px;
}

.hero-title {
  font-size: 3.2rem;
  line-height: 1.2;
  font-weight: 900;
  margin-bottom: 20px;
  background: linear-gradient(135deg, #ffffff 30%, var(--primary-light) 70%, var(--accent-cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-desc {
  font-size: 1.15rem;
  color: var(--text-muted);
  margin-bottom: 32px;
  max-width: 600px;
}

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

.hero-mascot-wrapper {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.mascot-glow {
  position: absolute;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(157, 78, 221, 0.4) 0%, rgba(0, 245, 212, 0.2) 50%, transparent 70%);
  filter: blur(40px);
  animation: pulse-glow 4s infinite alternate;
}

@keyframes pulse-glow {
  0% { transform: scale(0.9); opacity: 0.6; }
  100% { transform: scale(1.1); opacity: 0.9; }
}

.hero-mascot-img {
  width: 100%;
  max-width: 380px;
  position: relative;
  z-index: 2;
  filter: drop-shadow(0 15px 30px rgba(0,0,0,0.5));
  animation: float-anim 5s ease-in-out infinite;
}

@keyframes float-anim {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-15px); }
}

/* 核心优势模块 */
.features {
  padding: 60px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 50px;
}

.section-subtitle {
  color: var(--accent-cyan);
  font-weight: 700;
  font-size: 0.9rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.section-title {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--text-main);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: var(--transition);
  backdrop-filter: blur(10px);
}

.feature-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-glow);
  box-shadow: 0 12px 30px rgba(157, 78, 221, 0.15);
  background: var(--bg-card-hover);
}

.feature-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: rgba(157, 78, 221, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  margin-bottom: 20px;
  color: var(--primary-light);
}

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

.feature-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* 核心要求：价格卡片一排平铺展示 */
.pricing-section {
  padding: 80px 0;
  position: relative;
}

.pricing-row-container {
  display: flex;
  flex-direction: row;
  justify-content: flex-start;
  gap: 20px;
  overflow-x: auto;
  padding: 15px 5px 35px;
  scrollbar-width: thin;
  scrollbar-color: var(--primary) var(--bg-dark);
  scroll-behavior: auto;
}

.pricing-row-container::-webkit-scrollbar {
  height: 6px;
}

.pricing-row-container::-webkit-scrollbar-thumb {
  background: var(--primary);
  border-radius: 10px;
}

.pricing-card {
  flex: 0 0 280px;
  min-width: 280px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
  backdrop-filter: blur(12px);
}

.pricing-card.popular {
  border-color: var(--primary-light);
  background: linear-gradient(180deg, rgba(157, 78, 221, 0.2) 0%, rgba(20, 22, 41, 0.85) 100%);
  box-shadow: 0 10px 30px rgba(157, 78, 221, 0.25);
  transform: scale(1.03);
}

.badge-popular {
  position: absolute;
  top: -12px;
  right: 20px;
  background: linear-gradient(135deg, var(--accent-pink), var(--primary));
  color: #fff;
  font-size: 0.75rem;
  font-weight: 800;
  padding: 4px 12px;
  border-radius: 50px;
  text-transform: uppercase;
}

.pricing-header h3 {
  font-size: 1.3rem;
  margin-bottom: 8px;
}

.pricing-price {
  font-size: 2.2rem;
  font-weight: 900;
  color: var(--text-main);
  margin-bottom: 4px;
}

.pricing-price span {
  font-size: 0.9rem;
  color: var(--text-muted);
  font-weight: 400;
}

.pricing-period {
  font-size: 0.85rem;
  color: var(--accent-cyan);
  margin-bottom: 20px;
}

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

.pricing-features li {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.pricing-features li::before {
  content: "✓";
  color: var(--accent-cyan);
  font-weight: 900;
}

/* 文章导流列表 (SEO) */
.articles-section {
  padding: 80px 0;
}

.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}

.article-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.article-card:hover {
  border-color: var(--accent-cyan);
  transform: translateY(-4px);
}

.article-img-wrapper {
  width: 100%;
  height: 180px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  margin-bottom: 16px;
  position: relative;
  background: rgba(0, 0, 0, 0.3);
}

.article-img-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.article-card:hover .article-img-wrapper img {
  transform: scale(1.05);
}

.article-tag {
  color: var(--accent-pink);
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  margin-bottom: 10px;
}

.article-card h3 {
  font-size: 1.15rem;
  margin-bottom: 10px;
  line-height: 1.4;
}

.article-card h3 a {
  color: var(--text-main);
  text-decoration: none;
  transition: var(--transition);
}

.article-card h3 a:hover {
  color: var(--accent-cyan);
}

.article-card p {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 16px;
  flex-grow: 1;
}

.article-link {
  color: var(--primary-light);
  text-decoration: none;
  font-weight: 700;
  font-size: 0.85rem;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.article-link:hover {
  color: var(--accent-cyan);
}

/* 用户评价 */
.reviews-section {
  padding: 80px 0;
}

.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.review-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px;
}

.review-stars {
  color: var(--accent-gold);
  margin-bottom: 12px;
}

.review-text {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-bottom: 20px;
  font-style: italic;
}

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

.author-avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent-cyan));
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  color: #fff;
}

.author-info h4 {
  font-size: 0.95rem;
  color: var(--text-main);
}

.author-info span {
  font-size: 0.8rem;
  color: var(--text-dim);
}

/* FAQ 折叠面板 */
.faq-section {
  padding: 80px 0;
}

.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

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

.faq-question {
  padding: 20px 24px;
  font-weight: 700;
  font-size: 1.05rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  user-select: none;
}

.faq-question::after {
  content: "+";
  font-size: 1.4rem;
  color: var(--accent-cyan);
  transition: var(--transition);
}

.faq-item.active .faq-question::after {
  transform: rotate(45deg);
  color: var(--accent-pink);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s cubic-bezier(0, 1, 0, 1);
  padding: 0 24px;
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

.faq-item.active .faq-answer {
  max-height: 500px;
  padding: 0 24px 20px;
  transition: max-height 0.3s cubic-bezier(1, 0, 1, 0);
}

/* ==========================================================================
   核心任务 2：页脚 PBN 权重管道样式
   必须优雅融入暗黑底色，水平居中，包含机场测评和机场教程 Dofollow 外链
   ========================================================================== */
footer {
  background: rgba(5, 6, 12, 0.95);
  border-top: 1px solid var(--border-color);
  padding: 40px 0 30px;
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-muted);
}

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

.footer-brand {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text-main);
}

/* PBN 友情链接区 (低调/自然/深度融合) */
.pbn-links-area {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  margin-top: 10px;
  padding-top: 16px;
  border-top: 1px dashed rgba(255, 255, 255, 0.06);
  width: 100%;
  max-width: 600px;
}

.pbn-links-title {
  color: var(--text-dim);
  font-size: 0.8rem;
}

.pbn-link {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.82rem;
  transition: var(--transition);
}

.pbn-link:hover {
  color: var(--accent-cyan);
  text-decoration: underline;
}

.footer-copyright {
  color: var(--text-dim);
  font-size: 0.8rem;
}

/* 文章排版通用样式 (用于 articles/ 子页面) */
.article-page {
  padding: 130px 0 80px;
}

.article-container {
  max-width: 860px;
  margin: 0 auto;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 40px;
}

.article-content h1 {
  font-size: 2.2rem;
  margin-bottom: 16px;
  line-height: 1.3;
}

.article-meta {
  display: flex;
  gap: 16px;
  color: var(--text-dim);
  font-size: 0.85rem;
  margin-bottom: 30px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-color);
}

.article-content h2 {
  font-size: 1.5rem;
  margin: 32px 0 16px;
  color: var(--primary-light);
}

.article-content h3 {
  font-size: 1.2rem;
  margin: 24px 0 12px;
  color: var(--accent-cyan);
}

.article-content p {
  margin-bottom: 18px;
  line-height: 1.8;
  color: #d1d5db;
}

.article-content ul, .article-content ol {
  margin: 0 0 20px 24px;
  color: #d1d5db;
}

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

.cta-box {
  background: linear-gradient(135deg, rgba(157, 78, 221, 0.2), rgba(0, 245, 212, 0.1));
  border: 1px solid var(--primary-light);
  border-radius: var(--radius-md);
  padding: 24px;
  text-align: center;
  margin: 36px 0;
}

.cta-box h3 {
  color: #fff;
  margin-bottom: 12px;
}

/* 响应式断点 */
@media (max-width: 992px) {
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .hero-desc {
    margin: 0 auto 32px;
  }
  .hero-buttons {
    justify-content: center;
  }
  .hero-title {
    font-size: 2.4rem;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  .pricing-row-container {
    flex-direction: row;
    overflow-x: scroll;
    -webkit-overflow-scrolling: touch;
  }
  .pricing-card {
    min-width: 270px;
  }
  .article-container {
    padding: 24px;
  }
}