/* 贝贝云 (Beibeiyun.mom) - 现代海洋琉璃美学样式 */
@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;600;700;800&family=Noto+Sans+SC:wght@300;400;500;700&display=swap');

:root {
  --primary: #06b6d4;
  --primary-glow: rgba(6, 182, 212, 0.35);
  --primary-hover: #0891b2;
  --secondary: #0d9488;
  --gold-accent: #fbbf24;
  --gold-glow: rgba(251, 191, 36, 0.25);
  --bg-dark: #070d19;
  --bg-card: rgba(15, 23, 42, 0.78);
  --bg-card-hover: rgba(30, 41, 59, 0.88);
  --border-light: rgba(255, 255, 255, 0.12);
  --border-accent: rgba(6, 182, 212, 0.3);
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --font-family: 'Outfit', 'Noto Sans SC', sans-serif;
  --max-width: 1200px;
  --radius-lg: 18px;
  --radius-md: 12px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
  font-family: var(--font-family);
  background-color: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
  position: relative;
}

/* 背景渲染与浪花/光晕粒子 */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: 
    radial-gradient(circle at 15% 20%, rgba(6, 182, 212, 0.15) 0%, transparent 45%),
    radial-gradient(circle at 85% 70%, rgba(251, 191, 36, 0.1) 0%, transparent 40%),
    radial-gradient(circle at 50% 50%, rgba(13, 148, 136, 0.12) 0%, transparent 50%);
  pointer-events: none;
  z-index: -1;
}

/* 通用容器 */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

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

a:hover {
  color: #38bdf8;
}

/* 导航栏 */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(7, 13, 25, 0.82);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-light);
  padding: 0.85rem 0;
}

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

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.5px;
}

.brand-logo img {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  box-shadow: 0 0 12px var(--primary-glow);
  object-fit: cover;
}

.brand-logo span mark {
  background: linear-gradient(135deg, var(--primary), var(--gold-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.8rem;
  list-style: none;
}

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

.nav-links a:hover {
  color: var(--text-primary);
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.7rem 1.6rem;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, #06b6d4 0%, #0d9488 100%);
  color: #ffffff !important;
  font-weight: 700;
  font-size: 0.95rem;
  box-shadow: 0 4px 18px var(--primary-glow);
  border: 1px solid rgba(255, 255, 255, 0.2);
  cursor: pointer;
  transition: var(--transition);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px var(--primary-glow);
  background: linear-gradient(135deg, #0891b2 0%, #0f766e 100%);
}

.btn-gold {
  background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
  box-shadow: 0 4px 18px var(--gold-glow);
}
.btn-gold:hover {
  background: linear-gradient(135deg, #d97706 0%, #b45309 100%);
  box-shadow: 0 8px 24px var(--gold-glow);
}

.btn-block {
  width: 100%;
}

/* Hero Section 区域 - 海滩与贝壳主题 */
.hero-section {
  position: relative;
  padding: 10rem 0 6rem;
  background: linear-gradient(180deg, rgba(7,13,25,0.4) 0%, rgba(7,13,25,0.95) 100%),
              url('assets/beach_bg.jpg') center/cover no-repeat;
  min-height: 85vh;
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--border-light);
}

.hero-content {
  max-width: 820px;
  margin: 0 auto;
  text-align: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(6, 182, 212, 0.12);
  border: 1px solid var(--border-accent);
  padding: 0.4rem 1.2rem;
  border-radius: 50px;
  color: var(--primary);
  font-size: 0.88rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  backdrop-filter: blur(8px);
}

.hero-title {
  font-size: 3.2rem;
  line-height: 1.2;
  font-weight: 800;
  margin-bottom: 1.2rem;
  letter-spacing: -1px;
}

.hero-title span {
  background: linear-gradient(135deg, #38bdf8 0%, #fbbf24 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-desc {
  font-size: 1.15rem;
  color: var(--text-secondary);
  margin-bottom: 2.5rem;
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  justify-content: center;
  gap: 1.2rem;
  flex-wrap: wrap;
}

.hero-features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.2rem;
  margin-top: 4rem;
}

.feature-pill {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  padding: 1.2rem;
  border-radius: var(--radius-md);
  backdrop-filter: blur(12px);
  text-align: left;
  display: flex;
  align-items: center;
  gap: 1rem;
  transition: var(--transition);
}

.feature-pill:hover {
  border-color: var(--primary);
  transform: translateY(-3px);
}

.feature-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: rgba(6, 182, 212, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  color: var(--primary);
  flex-shrink: 0;
}

/* H2 页面区域与通用 Header */
.section-block {
  padding: 5rem 0;
  border-bottom: 1px solid var(--border-light);
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 3.5rem;
}

.section-header h2 {
  font-size: 2.3rem;
  font-weight: 800;
  margin-bottom: 0.8rem;
  color: var(--text-primary);
}

.section-header p {
  color: var(--text-secondary);
  font-size: 1.05rem;
}

/* H2 页面左右分栏布局 (图片2在左，图片3在右) */
.h2-split-container {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 2.5rem;
  align-items: start;
}

.h2-left-pricing {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.h2-right-stats {
  position: sticky;
  top: 100px;
}

/* 价格套餐表 - 左侧直排卡片 */
.price-card-item {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 1.8rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  backdrop-filter: blur(12px);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.price-card-item.featured {
  border-color: var(--primary);
  box-shadow: 0 0 30px rgba(6, 182, 212, 0.15);
  background: linear-gradient(135deg, rgba(15, 23, 42, 0.85) 0%, rgba(6, 182, 212, 0.08) 100%);
}

.price-card-item.featured::before {
  content: '热门推荐';
  position: absolute;
  top: 18px;
  right: -32px;
  transform: rotate(45deg);
  background: var(--gold-accent);
  color: #000;
  font-size: 0.75rem;
  font-weight: 800;
  padding: 4px 35px;
}

.price-info-left {
  flex: 1;
}

.price-title-wrap {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  margin-bottom: 0.5rem;
}

.price-title-wrap h3 {
  font-size: 1.35rem;
  color: var(--text-primary);
}

.price-tag {
  background: rgba(6, 182, 212, 0.15);
  color: var(--primary);
  padding: 0.2rem 0.6rem;
  border-radius: 6px;
  font-size: 0.78rem;
  font-weight: 600;
}

.price-features-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  list-style: none;
  margin-top: 0.8rem;
}

.price-features-list li {
  font-size: 0.88rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.price-features-list li::before {
  content: '✓';
  color: var(--primary);
  font-weight: bold;
}

.price-amount-right {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.8rem;
  min-width: 150px;
}

.price-num {
  font-size: 1.9rem;
  font-weight: 800;
  color: var(--gold-accent);
}

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

/* 实时下载与在线人数卡片 - 右侧卡片展示 */
.stats-banner-vertical {
  background: linear-gradient(135deg, rgba(6, 182, 212, 0.12) 0%, rgba(13, 148, 136, 0.18) 100%);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-lg);
  padding: 2.2rem 1.8rem;
  backdrop-filter: blur(16px);
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.stats-grid-inner {
  display: flex;
  flex-direction: column;
  gap: 1.8rem;
}

.stat-item {
  text-align: center;
  padding: 1.2rem;
  background: rgba(15, 23, 42, 0.5);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
}

.stat-number {
  font-size: 2.6rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--text-primary), var(--primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 0.3rem;
  font-family: 'Outfit', sans-serif;
}

.stat-label {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* H2 教程指南 - 直排上下展示 */
.vertical-stack-wrapper {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  width: 100%;
}

.tutorial-vertical-item {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 1.8rem 2rem;
  display: flex;
  align-items: flex-start;
  gap: 1.5rem;
  transition: var(--transition);
}

.tutorial-vertical-item:hover {
  border-color: var(--primary);
  background: var(--bg-card-hover);
}

.step-num-badge {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff;
  font-weight: 800;
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.tutorial-content {
  flex: 1;
}

.tutorial-content h3 {
  font-size: 1.25rem;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.tutorial-content p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 0.8rem;
}

.platform-tags {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.platform-tag {
  background: rgba(255, 255, 255, 0.08);
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  font-size: 0.78rem;
  color: var(--primary);
}

/* 创始人/文章团队区 */
.founder-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 3rem;
  display: flex;
  align-items: center;
  gap: 3rem;
  backdrop-filter: blur(12px);
}

.founder-avatar-wrap {
  width: 140px;
  height: 140px;
  border-radius: 50%;
  border: 3px solid var(--primary);
  box-shadow: 0 0 20px var(--primary-glow);
  overflow: hidden;
  flex-shrink: 0;
}

.founder-avatar-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.founder-bio h3 {
  font-size: 1.6rem;
  margin-bottom: 0.3rem;
}

.founder-title {
  color: var(--gold-accent);
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.founder-bio p {
  color: var(--text-secondary);
  font-size: 0.98rem;
  line-height: 1.8;
}

/* 文章矩阵网格 */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.8rem;
}

.article-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 1.8rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: var(--transition);
}

.article-card:hover {
  transform: translateY(-4px);
  border-color: var(--primary);
  box-shadow: 0 10px 30px rgba(6, 182, 212, 0.12);
}

.article-meta {
  color: var(--text-muted);
  font-size: 0.82rem;
  margin-bottom: 0.6rem;
}

.article-card h3 {
  font-size: 1.2rem;
  color: var(--text-primary);
  margin-bottom: 0.8rem;
  line-height: 1.4;
}

.article-card p {
  color: var(--text-secondary);
  font-size: 0.92rem;
  margin-bottom: 1.2rem;
}

.article-readmore {
  font-size: 0.9rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}

/* 指令1：用户评价 Customer Reviews (直排上下展示) */
.reviews-vertical-stack {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  max-width: 950px;
  margin: 0 auto;
}

.review-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 1.8rem 2.2rem;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

.review-card:hover {
  border-color: var(--primary);
  background: var(--bg-card-hover);
  transform: translateX(4px);
}

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

.user-left-info {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.user-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--gold-accent));
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  color: #000;
  font-size: 1.1rem;
}

.user-info h4 {
  font-size: 1.05rem;
  color: var(--text-primary);
}

.user-info .user-role-tag {
  font-size: 0.8rem;
  color: var(--primary);
}

.stars {
  color: var(--gold-accent);
  font-size: 1rem;
  letter-spacing: 2px;
}

.review-body {
  color: var(--text-secondary);
  font-size: 0.98rem;
  line-height: 1.7;
}

/* FAQ 常见问题 */
.faq-list {
  max-width: 850px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

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

.faq-question {
  padding: 1.3rem 1.8rem;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-primary);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  user-select: none;
}

.faq-question::after {
  content: '+';
  font-size: 1.4rem;
  color: var(--primary);
  transition: transform 0.3s;
}

.faq-item.active .faq-question::after {
  content: '−';
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
  padding: 0 1.8rem;
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.8;
}

.faq-item.active .faq-answer {
  max-height: 300px;
  padding: 0 1.8rem 1.5rem;
}

/* 页脚 <footer> 与 PBN 友情链接区 */
footer {
  background: #030712;
  border-top: 1px solid var(--border-light);
  padding: 3.5rem 0 2rem;
  text-align: center;
}

.footer-top {
  margin-bottom: 2.5rem;
}

.footer-logo {
  font-size: 1.4rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

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

/* 核心要求：低调美观小字号 PBN 友情链接区 */
.pbn-links-area {
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  font-size: 0.8rem;
  color: var(--text-muted);
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1.2rem;
  flex-wrap: wrap;
}

.pbn-links-area span {
  opacity: 0.6;
}

.pbn-links-area a {
  color: #64748b;
  text-decoration: none;
  font-size: 0.78rem;
  transition: color 0.2s ease;
}

.pbn-links-area a:hover {
  color: #94a3b8;
}

/* 响应式适配 Responsive */
@media (max-width: 992px) {
  .h2-split-container {
    grid-template-columns: 1fr;
  }
  .h2-right-stats {
    position: static;
  }
}

@media (max-width: 768px) {
  .hero-title {
    font-size: 2.2rem;
  }
  .price-card-item {
    flex-direction: column;
    align-items: flex-start;
  }
  .price-amount-right {
    align-items: flex-start;
    width: 100%;
  }
  .founder-card {
    flex-direction: column;
    text-align: center;
    padding: 2rem;
  }
  .nav-links {
    display: none;
  }
}