/* ============================================
   小蓝导航 - 原创样式表
   hnehhnzt.cn | 全网资源一站直达
   ============================================ */

/* === 基础重置与变量 === */
:root {
  --primary: #E84393;
  --secondary: #6C5CE7;
  --accent: #FD79A8;
  --bg-dark: #0D0B1A;
  --bg-card: #1A1530;
  --bg-hover: #241E3E;
  --text-main: #FFFFFF;
  --text-sub: #B8B5C8;
  --text-muted: #7B7794;
  --gradient-main: linear-gradient(135deg, #E84393, #6C5CE7);
  --gradient-card: linear-gradient(145deg, #1A1530, #241E3E);
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 8px 32px rgba(232, 67, 147, 0.15);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
  font-family: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', sans-serif;
  background: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.7;
  overflow-x: hidden;
}

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

a:hover {
  color: var(--primary);
}

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

/* === 布局容器 === */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.section {
  padding: 80px 0;
}

.section-title {
  font-size: 2rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 16px;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-subtitle {
  text-align: center;
  color: var(--text-sub);
  font-size: 1rem;
  margin-bottom: 48px;
}

/* === 头部导航 === */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(13, 11, 26, 0.92);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(232, 67, 147, 0.1);
  transition: var(--transition);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

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

.logo img {
  height: 36px;
  width: auto;
}

.logo-text {
  font-size: 1.3rem;
  font-weight: 700;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.main-nav a {
  color: var(--text-sub);
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 500;
  transition: var(--transition);
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--text-main);
  background: rgba(232, 67, 147, 0.12);
}

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

/* === 搜索框 === */
.search-bar {
  background: var(--bg-card);
  border: 1px solid rgba(108, 92, 231, 0.2);
  border-radius: 50px;
  padding: 12px 24px;
  max-width: 600px;
  margin: 0 auto 40px;
  display: flex;
  align-items: center;
  gap: 12px;
  transition: var(--transition);
}

.search-bar:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 20px rgba(232, 67, 147, 0.2);
}

.search-bar input {
  flex: 1;
  background: none;
  border: none;
  color: var(--text-main);
  font-size: 0.95rem;
  outline: none;
}

.search-bar input::placeholder {
  color: var(--text-muted);
}

.search-bar button {
  background: var(--gradient-main);
  border: none;
  color: white;
  padding: 8px 20px;
  border-radius: 25px;
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 600;
  transition: var(--transition);
}

.search-bar button:hover {
  transform: scale(1.05);
  box-shadow: 0 4px 15px rgba(232, 67, 147, 0.4);
}

/* === Hero区域 === */
.hero {
  position: relative;
  min-height: 520px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  margin-top: 68px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.4;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(13,11,26,0.3) 0%, rgba(13,11,26,0.85) 100%);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  padding: 60px 20px;
}

.hero-badge {
  display: inline-block;
  background: rgba(232, 67, 147, 0.15);
  border: 1px solid rgba(232, 67, 147, 0.3);
  color: var(--accent);
  padding: 6px 18px;
  border-radius: 25px;
  font-size: 0.8rem;
  margin-bottom: 20px;
}

.hero h1 {
  font-size: 3rem;
  font-weight: 800;
  margin-bottom: 16px;
  line-height: 1.2;
}

.hero h1 span {
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 1.1rem;
  color: var(--text-sub);
  max-width: 600px;
  margin: 0 auto 30px;
}

.hero-btns {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn-primary {
  background: var(--gradient-main);
  color: white;
  padding: 12px 32px;
  border-radius: 30px;
  font-weight: 600;
  font-size: 0.95rem;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
  color: white;
}

.btn-outline {
  background: transparent;
  color: var(--text-main);
  padding: 12px 32px;
  border-radius: 30px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid rgba(255,255,255,0.2);
  cursor: pointer;
  transition: var(--transition);
}

.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
}

/* === 视频卡片网格 === */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
}

.video-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
  border: 1px solid rgba(108, 92, 231, 0.1);
}

.video-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow);
  border-color: rgba(232, 67, 147, 0.3);
}

.video-thumb {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
}

.video-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.video-card:hover .video-thumb img {
  transform: scale(1.05);
}

.video-play-btn {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.8);
  width: 56px;
  height: 56px;
  background: rgba(232, 67, 147, 0.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: var(--transition);
}

.video-card:hover .video-play-btn {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
}

.video-play-btn::after {
  content: '';
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 10px 0 10px 18px;
  border-color: transparent transparent transparent white;
  margin-left: 4px;
}

.video-duration {
  position: absolute;
  bottom: 8px;
  right: 8px;
  background: rgba(0,0,0,0.75);
  color: white;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.75rem;
}

.video-info {
  padding: 16px;
}

.video-info h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.video-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text-muted);
  font-size: 0.8rem;
}

.video-meta span {
  display: flex;
  align-items: center;
  gap: 4px;
}

/* === 模块卡片 === */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

.feature-card {
  background: var(--gradient-card);
  border: 1px solid rgba(108, 92, 231, 0.15);
  border-radius: var(--radius);
  padding: 32px 24px;
  text-align: center;
  transition: var(--transition);
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: rgba(232, 67, 147, 0.3);
  box-shadow: var(--shadow);
}

.feature-icon {
  width: 60px;
  height: 60px;
  background: var(--gradient-main);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  font-size: 1.5rem;
}

.feature-card h3 {
  font-size: 1.1rem;
  margin-bottom: 10px;
}

.feature-card p {
  color: var(--text-sub);
  font-size: 0.9rem;
}

/* === 专家展示 === */
.expert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}

.expert-card {
  background: var(--bg-card);
  border: 1px solid rgba(108, 92, 231, 0.1);
  border-radius: var(--radius);
  padding: 24px;
  display: flex;
  gap: 16px;
  align-items: flex-start;
  transition: var(--transition);
}

.expert-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow);
}

.expert-avatar {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--primary);
  flex-shrink: 0;
}

.expert-info h4 {
  font-size: 1rem;
  margin-bottom: 4px;
}

.expert-info .role {
  color: var(--accent);
  font-size: 0.8rem;
  margin-bottom: 8px;
}

.expert-info p {
  color: var(--text-sub);
  font-size: 0.85rem;
  margin-bottom: 12px;
}

.expert-btns {
  display: flex;
  gap: 8px;
}

.expert-btns a {
  padding: 4px 12px;
  border-radius: 15px;
  font-size: 0.75rem;
  border: 1px solid var(--primary);
  color: var(--primary);
}

.expert-btns a:hover {
  background: var(--primary);
  color: white;
}

/* === 品牌墙 === */
.brand-wall {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  justify-content: center;
  align-items: center;
}

.brand-item {
  background: var(--bg-card);
  border: 1px solid rgba(108, 92, 231, 0.1);
  border-radius: var(--radius-sm);
  padding: 16px 28px;
  color: var(--text-sub);
  font-weight: 600;
  font-size: 0.9rem;
  transition: var(--transition);
}

.brand-item:hover {
  border-color: var(--primary);
  color: var(--primary);
}

/* === FAQ === */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid rgba(108, 92, 231, 0.1);
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
  overflow: hidden;
}

.faq-question {
  padding: 18px 24px;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
  transition: var(--transition);
}

.faq-question:hover {
  color: var(--primary);
}

.faq-question::after {
  content: '+';
  font-size: 1.3rem;
  color: var(--primary);
  transition: var(--transition);
}

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

.faq-answer {
  padding: 0 24px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
  color: var(--text-sub);
  font-size: 0.9rem;
}

.faq-item.active .faq-answer {
  padding: 0 24px 18px;
  max-height: 200px;
}

/* === 用户评论 === */
.review-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}

.review-card {
  background: var(--bg-card);
  border: 1px solid rgba(108, 92, 231, 0.1);
  border-radius: var(--radius);
  padding: 24px;
}

.review-stars {
  color: #FBBF24;
  margin-bottom: 12px;
  font-size: 0.9rem;
}

.review-text {
  color: var(--text-sub);
  font-size: 0.9rem;
  margin-bottom: 16px;
  line-height: 1.6;
}

.review-author {
  display: flex;
  align-items: center;
  gap: 10px;
}

.review-author-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--gradient-main);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: 700;
}

.review-author-name {
  font-size: 0.85rem;
  font-weight: 600;
}

.review-author-date {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* === 联系我们 === */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 24px;
}

.contact-card {
  background: var(--bg-card);
  border: 1px solid rgba(108, 92, 231, 0.1);
  border-radius: var(--radius);
  padding: 24px;
  text-align: center;
}

.contact-card h4 {
  margin-bottom: 8px;
  color: var(--accent);
}

.contact-card p {
  color: var(--text-sub);
  font-size: 0.9rem;
}

/* === 页脚 === */
.site-footer {
  background: var(--bg-card);
  border-top: 1px solid rgba(108, 92, 231, 0.1);
  padding: 60px 0 30px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand p {
  color: var(--text-sub);
  font-size: 0.85rem;
  margin-top: 12px;
  line-height: 1.7;
}

.footer-links h4 {
  font-size: 1rem;
  margin-bottom: 16px;
  color: var(--text-main);
}

.footer-links a {
  display: block;
  color: var(--text-sub);
  font-size: 0.85rem;
  padding: 4px 0;
}

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

.footer-bottom {
  border-top: 1px solid rgba(108, 92, 231, 0.1);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-bottom p {
  color: var(--text-muted);
  font-size: 0.8rem;
}

.footer-social {
  display: flex;
  gap: 12px;
}

.footer-social a {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(108, 92, 231, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-sub);
  font-size: 0.85rem;
  transition: var(--transition);
}

.footer-social a:hover {
  background: var(--primary);
  color: white;
}

/* === 面包屑 === */
.breadcrumb {
  padding: 16px 0;
  margin-top: 68px;
}

.breadcrumb a,
.breadcrumb span {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.breadcrumb a:hover {
  color: var(--primary);
}

.breadcrumb .sep {
  margin: 0 8px;
}

/* === 内页Banner === */
.page-banner {
  position: relative;
  height: 280px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  margin-top: 68px;
  overflow: hidden;
}

.page-banner img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.35;
}

.page-banner .overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(13,11,26,0.4), rgba(13,11,26,0.9));
}

.page-banner-content {
  position: relative;
  z-index: 2;
}

.page-banner h1 {
  font-size: 2.2rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.page-banner p {
  color: var(--text-sub);
}

/* === 响应式 === */
@media (max-width: 768px) {
  .main-nav {
    display: none;
    position: absolute;
    top: 68px;
    left: 0;
    width: 100%;
    background: rgba(13, 11, 26, 0.98);
    flex-direction: column;
    padding: 20px;
    border-bottom: 1px solid rgba(232, 67, 147, 0.1);
  }

  .main-nav.active {
    display: flex;
  }

  .nav-toggle {
    display: block;
  }

  .hero h1 {
    font-size: 2rem;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }

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

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

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

  .section {
    padding: 50px 0;
  }

  .section-title {
    font-size: 1.5rem;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 1.6rem;
  }

  .hero p {
    font-size: 0.95rem;
  }

  .hero-btns {
    flex-direction: column;
    align-items: center;
  }
}

/* === 懒加载 === */
img[loading="lazy"] {
  opacity: 0;
  transition: opacity 0.5s ease;
}

img.loaded {
  opacity: 1;
}

/* === 动画 === */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-in {
  animation: fadeInUp 0.6s ease forwards;
}