/* ==========================================================================
   大哥云 (Dageyun) - 70-80年代香港复古风 (Hong Kong Retro Style) 浅色主题样式表
   纯 CSS3 / 无外部库 / 极致秒开 / 完备响应式 / 浅色怀旧纸张&复古海报风
   ========================================================================== */

/* 1. 全局设置与浅色复古色彩系统 */
:root {
  --bg-main: #f8f4eb;             /* 怀旧老报纸米黄底色 */
  --bg-card: #ffffff;             /* 纯白卡片底色 */
  --bg-card-alt: #f3ebd9;         /* 卡片次级浅黄灰底色 */
  --border-gold: #c29b38;         /* 港风复古琥珀金边框 */
  --border-neon-red: #d90429;     /* 经典印章朱红边框 */
  --text-primary: #1c1326;        /* 墨紫黑高对比标题字 */
  --text-muted: #544460;          /* 怀旧深紫灰正文文字 */
  --neon-cyan: #007a8c;           /* 浅色港风复古青蓝 */
  --neon-yellow: #a67c00;         /* 浅色港风暗金黄 */
  --neon-red: #d90429;            /* 复古招牌朱红 */
  --neon-green: #0f8b8d;          /* 复古翡翠青绿 */
  --accent-gold: #b8860b;         /* 复古黄金强调色 */
  --font-heading: 'PingFang SC', 'Microsoft YaHei', 'SimHei', sans-serif;
  --font-body: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --shadow-retro: 3px 3px 0px #1c1326;
  --shadow-card: 0 4px 15px rgba(28, 19, 38, 0.06);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  background-color: var(--bg-main);
  color: var(--text-primary);
  font-family: var(--font-body);
  line-height: 1.6;
}

body {
  overflow-x: hidden;
  background: 
    radial-gradient(circle at 10% 10%, rgba(217, 4, 41, 0.04) 0%, transparent 40%),
    radial-gradient(circle at 90% 90%, rgba(0, 122, 140, 0.05) 0%, transparent 40%),
    linear-gradient(180deg, #f8f4eb 0%, #f1e9d8 50%, #eee3cc 100%);
  background-attachment: fixed;
  min-height: 100vh;
}

a {
  color: var(--neon-cyan);
  text-decoration: none;
  transition: all 0.25s ease;
}

a:hover {
  color: var(--neon-red);
}

/* 2. 浅色复古港风组件 (复古文字、双框招牌、微章) */
.container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 20px;
}

.neon-text-red {
  color: #d90429;
  font-weight: 900;
  text-shadow: 1px 1px 0px rgba(0, 0, 0, 0.15);
}

.neon-text-cyan {
  color: #007a8c;
  font-weight: 900;
}

.neon-text-gold {
  color: #b8860b;
  font-weight: 900;
}

/* 复古招牌双线边框 (浅色纸张感) */
.retro-border-box {
  border: 3px double var(--border-gold);
  background-color: var(--bg-card);
  box-shadow: 
    0 4px 12px rgba(28, 19, 38, 0.08),
    inset 0 0 0 1px rgba(194, 155, 56, 0.2);
  border-radius: 4px;
  position: relative;
}

/* 复古徽章/印章标签 */
.hk-badge {
  display: inline-block;
  padding: 4px 14px;
  font-size: 0.85rem;
  font-weight: bold;
  letter-spacing: 1px;
  color: #d90429;
  border: 2px solid #d90429;
  background: #fdf2f4;
  text-transform: uppercase;
  border-radius: 2px;
  box-shadow: 2px 2px 0px #d90429;
}

/* 3. 呼吁性 CTA 按钮 (浅色复古撞色高对比) */
.cta-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 32px;
  font-size: 1.15rem;
  font-weight: 900;
  letter-spacing: 1.5px;
  color: #1c1326;
  background: #ffcc00;
  border: 2px solid #1c1326;
  border-radius: 4px;
  box-shadow: var(--shadow-retro);
  cursor: pointer;
  text-transform: uppercase;
  transition: all 0.2s ease-in-out;
  min-height: 48px;
}

.cta-button:hover {
  transform: translate(-2px, -2px);
  color: #1c1326;
  background: #ffe066;
  box-shadow: 5px 5px 0px #1c1326;
}

.cta-button-lg {
  padding: 18px 42px;
  font-size: 1.35rem;
}

.cta-button-red {
  background: #d90429;
  color: #ffffff;
  border: 2px solid #1c1326;
  box-shadow: var(--shadow-retro);
}

.cta-button-red:hover {
  color: #ffffff;
  background: #ef233c;
  box-shadow: 5px 5px 0px #1c1326;
}

/* 4. 顶部导航栏 (Navbar - 浅色怀旧) */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(248, 244, 235, 0.95);
  backdrop-filter: blur(8px);
  border-bottom: 2px solid var(--border-gold);
  padding: 12px 0;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.6rem;
  font-weight: 900;
  letter-spacing: 2px;
  font-family: var(--font-heading);
}

.logo-badge {
  background: var(--neon-red);
  color: #fff;
  padding: 2px 8px;
  font-size: 0.75rem;
  border-radius: 2px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 25px;
  list-style: none;
}

.nav-links a {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
}

.nav-links a:hover {
  color: var(--neon-red);
}

/* 5. Hero 主视觉区 (浅色报刊海报风) */
.hero {
  padding: 60px 0 50px;
  text-align: center;
  position: relative;
}

.hero-banner {
  padding: 45px 30px;
  margin-bottom: 30px;
  background: #ffffff;
  border: 3px double var(--border-gold);
  box-shadow: 0 10px 25px rgba(28, 19, 38, 0.08);
}

.hero-tag {
  margin-bottom: 15px;
}

.hero-title {
  font-size: 3.2rem;
  font-weight: 900;
  line-height: 1.25;
  margin-bottom: 20px;
  letter-spacing: 3px;
  font-family: var(--font-heading);
  color: var(--text-primary);
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-muted);
  max-width: 800px;
  margin: 0 auto 30px;
  line-height: 1.7;
}

.hero-cta-group {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 15px;
  flex-wrap: wrap;
  margin-bottom: 10px;
}

.hero-features-strip {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 15px;
  margin-top: 30px;
}

.strip-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--neon-cyan);
  background: #e6f4f6;
  padding: 6px 16px;
  border: 1px solid var(--neon-cyan);
  border-radius: 30px;
}

/* 6. 通用区块标题 */
.section-title-wrap {
  text-align: center;
  margin-bottom: 45px;
}

.section-title {
  font-size: 2.3rem;
  font-weight: 900;
  letter-spacing: 2px;
  display: inline-block;
  position: relative;
  padding: 0 20px;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-muted);
  margin-top: 10px;
}

/* 7. 核心优势区块 */
.features-section {
  padding: 50px 0;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 25px;
}

.feature-card {
  padding: 30px 25px;
  text-align: center;
  background: #ffffff;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 20px rgba(194, 155, 56, 0.25);
}

.feature-icon {
  font-size: 2.8rem;
  margin-bottom: 15px;
  display: block;
}

.feature-card h3 {
  font-size: 1.35rem;
  color: var(--neon-red);
  margin-bottom: 12px;
}

.feature-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* 8. 流媒体与 AI 支持 */
.unlock-section {
  padding: 50px 0;
  background: rgba(243, 235, 217, 0.5);
}

.unlock-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 25px;
}

.unlock-box {
  padding: 25px;
  background: #ffffff;
  border-left: 5px solid var(--neon-red);
}

.unlock-box h4 {
  font-size: 1.25rem;
  color: var(--text-primary);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.unlock-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 15px;
}

.tag {
  background: #f0e6d6;
  padding: 4px 12px;
  font-size: 0.85rem;
  font-weight: 600;
  border-radius: 3px;
  color: var(--text-primary);
  border: 1px solid #d8cbba;
}

/* 9. 套餐价格对比表 */
.pricing-section {
  padding: 60px 0;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 25px;
  align-items: stretch;
}

.pricing-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 35px 25px;
  text-align: center;
  position: relative;
  background: #ffffff;
}

.pricing-card.popular {
  border: 3px solid var(--neon-red);
  box-shadow: 0 8px 25px rgba(217, 4, 41, 0.15);
}

.popular-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--neon-red);
  color: #fff;
  font-size: 0.8rem;
  font-weight: 900;
  padding: 3px 16px;
  border-radius: 12px;
  letter-spacing: 1px;
}

.pricing-header h3 {
  font-size: 1.4rem;
  color: var(--text-primary);
  margin-bottom: 15px;
}

.price {
  font-size: 2.4rem;
  font-weight: 900;
  color: var(--neon-red);
  margin-bottom: 5px;
}

.price span {
  font-size: 1rem;
  color: var(--text-muted);
  font-weight: normal;
}

.pricing-features {
  list-style: none;
  margin: 25px 0;
  text-align: left;
  border-top: 1px dashed #d8cbba;
  border-bottom: 1px dashed #d8cbba;
  padding: 20px 0;
}

.pricing-features li {
  margin-bottom: 10px;
  font-size: 0.92rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 8px;
}

.pricing-features li::before {
  content: '✓';
  color: #d90429;
  font-weight: bold;
}

/* 10. 用户评价 */
.reviews-section {
  padding: 50px 0;
}

.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 25px;
}

.review-card {
  padding: 25px;
  background: #ffffff;
  border: 1px solid var(--border-gold);
}

.review-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 15px;
}

.reviewer-info {
  display: flex;
  align-items: center;
  gap: 10px;
}

.reviewer-avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--border-gold);
  color: #ffffff;
  font-weight: 900;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
}

.stars {
  color: #ffaa00;
}

.review-text {
  font-size: 0.95rem;
  color: var(--text-muted);
  font-style: italic;
  line-height: 1.6;
}

/* 11. FAQ 常见问题 */
.faq-section {
  padding: 50px 0;
}

.faq-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
  gap: 20px;
}

.faq-item {
  padding: 22px;
  background: #ffffff;
  border-left: 4px solid var(--border-gold);
}

.faq-item h4 {
  font-size: 1.15rem;
  color: var(--neon-red);
  margin-bottom: 10px;
}

.faq-item p {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* 12. 页脚 Footer (浅色怀旧底色) */
.footer {
  margin-top: 70px;
  background: #eee5d3;
  border-top: 3px double var(--border-gold);
  padding: 40px 0 30px;
  text-align: center;
}

.footer-nav {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 30px 40px;
  margin-bottom: 25px;
}

.footer-nav a {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: 1px;
  padding: 5px 10px;
  border-bottom: 2px solid transparent;
}

.footer-nav a:hover {
  color: var(--neon-red);
  border-bottom-color: var(--neon-red);
}

.footer-copyright {
  color: var(--text-muted);
  font-size: 0.88rem;
  border-top: 1px solid rgba(0, 0, 0, 0.08);
  padding-top: 20px;
  margin-top: 20px;
}

/* 13. 子页面通用样式 */
.page-header {
  padding: 50px 0 25px;
  text-align: center;
  border-bottom: 1px dashed var(--border-gold);
  margin-bottom: 35px;
}

.page-content {
  padding-bottom: 60px;
  max-width: 900px;
  margin: 0 auto;
}

.page-content h2 {
  font-size: 1.6rem;
  color: var(--neon-red);
  margin: 30px 0 15px;
  border-bottom: 2px solid var(--border-gold);
  padding-bottom: 8px;
}

.page-content p {
  margin-bottom: 15px;
  color: var(--text-muted);
  line-height: 1.8;
  font-size: 1rem;
}

.page-content ul {
  margin: 15px 0 20px 25px;
  color: var(--text-muted);
}

.page-content li {
  margin-bottom: 8px;
  line-height: 1.6;
}

/* 14. 响应式适配 (@media 媒体查询) */
/* 15. 高科技网格卡片 (Grid Cards) 布局样式 */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 25px;
  margin-top: 30px;
}

.article-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 25px;
  background: var(--bg-card);
  border: 2px solid var(--border-gold);
  border-radius: 4px;
  box-shadow: 0 4px 15px rgba(28, 19, 38, 0.05);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.article-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 22px rgba(194, 155, 56, 0.2);
  border-color: var(--neon-red);
}

.article-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.article-tag {
  background: #f0e6d6;
  color: var(--neon-red);
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 3px;
  border: 1px solid rgba(217, 4, 41, 0.2);
}

.article-card h3 {
  font-size: 1.2rem;
  color: var(--text-primary);
  margin-bottom: 12px;
  line-height: 1.4;
}

.article-excerpt {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 20px;
  flex-grow: 1;
}

.article-btn {
  display: inline-block;
  text-align: center;
  padding: 10px 20px;
  font-weight: 800;
  color: var(--text-primary);
  background: #ffcc00;
  border: 2px solid var(--text-primary);
  border-radius: 4px;
  box-shadow: 2px 2px 0px var(--text-primary);
  transition: all 0.2s ease;
}

.article-btn:hover {
  background: #ffe066;
  transform: translate(-1px, -1px);
  box-shadow: 4px 4px 0px var(--text-primary);
}

/* 16. 响应式适配 (@media 媒体查询) */
@media (max-width: 768px) {
  .hero-title {
    font-size: 2.1rem;
    letter-spacing: 1px;
  }
  
  .hero-subtitle {
    font-size: 1.05rem;
  }

  .section-title {
    font-size: 1.75rem;
  }

  .nav-links {
    display: none;
  }

  .pricing-grid {
    grid-template-columns: 1fr;
  }

  .faq-grid {
    grid-template-columns: 1fr;
  }

  .articles-grid {
    grid-template-columns: 1fr;
  }

  .cta-button {
    width: 100%;
    padding: 16px 20px;
    font-size: 1.1rem;
  }

  .footer-nav {
    flex-direction: column;
    gap: 18px;
  }
}