/* 海角 - 影视传媒视频社区 主样式表 */
/* 原创设计，版权所有 © 2026 海角 wokpt62.cn */

/* ===== CSS变量 ===== */
:root {
  --primary: #1a3a52;
  --primary-light: #2a5a7a;
  --accent: #ff6b9d;
  --accent-hover: #e55585;
  --gold: #ffd700;
  --gold-dark: #e6c200;
  --bg-main: #f5f7fa;
  --bg-card: #ffffff;
  --bg-dark: #0d1f2d;
  --text-main: #2c3e50;
  --text-light: #6c7a89;
  --text-white: #ffffff;
  --border: #e0e6ed;
  --shadow: 0 4px 20px rgba(26,58,82,0.10);
  --shadow-hover: 0 8px 32px rgba(26,58,82,0.18);
  --radius: 12px;
  --radius-sm: 6px;
  --transition: all 0.3s ease;
}

/* ===== 重置与基础 ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: "Microsoft YaHei", "微软雅黑", "PingFang SC", "Hiragino Sans GB", sans-serif;
  background: var(--bg-main);
  color: var(--text-main);
  line-height: 1.7;
  overflow-x: hidden;
}
a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--accent); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }
button { cursor: pointer; border: none; outline: none; }
input, textarea { outline: none; }

/* ===== 顶部通知栏 ===== */
.top-bar {
  background: linear-gradient(90deg, var(--primary) 0%, var(--primary-light) 100%);
  color: var(--text-white);
  text-align: center;
  padding: 8px 0;
  font-size: 13px;
  letter-spacing: 0.5px;
}
.top-bar a { color: var(--gold); }
.top-bar a:hover { color: var(--text-white); }

/* ===== 头部导航 ===== */
.site-header {
  background: var(--bg-card);
  box-shadow: 0 2px 12px rgba(26,58,82,0.08);
  position: sticky;
  top: 0;
  z-index: 1000;
}
.header-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}
.logo-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.logo-img {
  height: 44px;
  width: auto;
  object-fit: contain;
}
.logo-text {
  font-size: 22px;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: 1px;
}
.logo-text span { color: var(--accent); }

/* 主导航 */
.main-nav { display: flex; align-items: center; gap: 4px; }
.main-nav a {
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 500;
  color: var(--text-main);
  white-space: nowrap;
  transition: var(--transition);
}
.main-nav a:hover, .main-nav a.active {
  background: var(--primary);
  color: var(--text-white);
}
.main-nav a.nav-hot {
  color: var(--accent);
}
.main-nav a.nav-hot:hover {
  background: var(--accent);
  color: var(--text-white);
}

/* 汉堡菜单 */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  padding: 8px;
}
.hamburger span {
  width: 24px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
  transition: var(--transition);
}

/* ===== 搜索栏 ===== */
.search-bar-wrap {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  padding: 14px 0;
}
.search-bar-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.search-label {
  color: var(--gold);
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
}
.search-form {
  flex: 1;
  display: flex;
  max-width: 600px;
  background: rgba(255,255,255,0.12);
  border-radius: 30px;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.25);
}
.search-input {
  flex: 1;
  padding: 10px 18px;
  background: transparent;
  border: none;
  color: var(--text-white);
  font-size: 14px;
}
.search-input::placeholder { color: rgba(255,255,255,0.6); }
.search-btn {
  padding: 10px 20px;
  background: var(--accent);
  color: var(--text-white);
  font-size: 14px;
  font-weight: 600;
  border-radius: 0 30px 30px 0;
  transition: var(--transition);
}
.search-btn:hover { background: var(--accent-hover); }
.search-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.search-tag {
  padding: 4px 12px;
  background: rgba(255,255,255,0.15);
  border-radius: 20px;
  color: rgba(255,255,255,0.85);
  font-size: 12px;
  cursor: pointer;
  transition: var(--transition);
}
.search-tag:hover { background: var(--accent); color: var(--text-white); }

/* ===== 面包屑 ===== */
.breadcrumb {
  max-width: 1280px;
  margin: 0 auto;
  padding: 12px 20px;
  font-size: 13px;
  color: var(--text-light);
}
.breadcrumb a { color: var(--text-light); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb span { margin: 0 6px; }

/* ===== 通用容器 ===== */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 20px;
}
.section { padding: 60px 0; }
.section-sm { padding: 40px 0; }
.section-dark { background: var(--bg-dark); color: var(--text-white); }
.section-gray { background: #eef1f6; }

/* 节标题 */
.section-title {
  font-size: 28px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 8px;
  position: relative;
  display: inline-block;
}
.section-title::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 0;
  width: 50px;
  height: 3px;
  background: var(--accent);
  border-radius: 2px;
}
.section-subtitle {
  font-size: 15px;
  color: var(--text-light);
  margin-top: 14px;
  margin-bottom: 32px;
}
.section-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 30px;
  flex-wrap: wrap;
  gap: 12px;
}
.view-more {
  font-size: 14px;
  color: var(--primary);
  border: 1px solid var(--primary);
  padding: 6px 16px;
  border-radius: 20px;
  transition: var(--transition);
}
.view-more:hover { background: var(--primary); color: var(--text-white); }

/* ===== 轮播Banner ===== */
.hero-slider {
  position: relative;
  overflow: hidden;
  height: 480px;
  background: var(--bg-dark);
}
.slider-track {
  display: flex;
  height: 100%;
  transition: transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.slide {
  min-width: 100%;
  height: 100%;
  position: relative;
  overflow: hidden;
}
.slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
}
.slide-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to right, rgba(13,31,45,0.85) 0%, rgba(13,31,45,0.3) 60%, transparent 100%);
  display: flex;
  align-items: center;
}
.slide-content {
  padding: 0 60px;
  max-width: 600px;
}
.slide-tag {
  display: inline-block;
  background: var(--accent);
  color: var(--text-white);
  font-size: 12px;
  padding: 4px 12px;
  border-radius: 20px;
  margin-bottom: 14px;
}
.slide-title {
  font-size: 36px;
  font-weight: 700;
  color: var(--text-white);
  line-height: 1.3;
  margin-bottom: 14px;
}
.slide-desc {
  font-size: 15px;
  color: rgba(255,255,255,0.85);
  margin-bottom: 24px;
}
.slide-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent);
  color: var(--text-white);
  padding: 12px 28px;
  border-radius: 30px;
  font-size: 15px;
  font-weight: 600;
  transition: var(--transition);
}
.slide-btn:hover { background: var(--accent-hover); color: var(--text-white); transform: translateY(-2px); }
.slide-btn svg { width: 18px; height: 18px; }

/* 轮播控制 */
.slider-prev, .slider-next {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255,255,255,0.2);
  color: white;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  cursor: pointer;
  transition: var(--transition);
  z-index: 10;
  backdrop-filter: blur(4px);
}
.slider-prev { left: 20px; }
.slider-next { right: 20px; }
.slider-prev:hover, .slider-next:hover { background: var(--accent); }
.slider-dots {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 8px;
  z-index: 10;
}
.slider-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255,255,255,0.5);
  cursor: pointer;
  transition: var(--transition);
}
.slider-dot.active { background: var(--accent); width: 24px; border-radius: 4px; }

/* ===== 视频卡片 ===== */
.video-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.video-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
  cursor: pointer;
}
.video-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
}
.video-thumb {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16/9;
  background: #1a1a2e;
}
.video-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.video-card:hover .video-thumb img { transform: scale(1.06); }
.video-play-btn {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0.35);
  opacity: 0;
  transition: var(--transition);
}
.video-card:hover .video-play-btn { opacity: 1; }
.play-icon {
  width: 54px;
  height: 54px;
  background: rgba(255,107,157,0.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transform: scale(0.8);
  transition: var(--transition);
}
.video-card:hover .play-icon { transform: scale(1); }
.play-icon::after {
  content: '';
  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;
  font-size: 12px;
  padding: 2px 8px;
  border-radius: 4px;
}
.video-quality {
  position: absolute;
  top: 8px;
  left: 8px;
  background: var(--accent);
  color: white;
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 4px;
  font-weight: 600;
}
.video-info { padding: 14px; }
.video-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-main);
  line-height: 1.5;
  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;
  font-size: 12px;
  color: var(--text-light);
}
.video-meta span { display: flex; align-items: center; gap: 4px; }
.video-author {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px solid var(--border);
}
.author-avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  object-fit: cover;
}
.author-name { font-size: 12px; color: var(--text-light); }

/* ===== 图片卡片 ===== */
.photo-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.photo-card {
  border-radius: var(--radius);
  overflow: hidden;
  position: relative;
  aspect-ratio: 3/4;
  cursor: pointer;
  box-shadow: var(--shadow);
  transition: var(--transition);
}
.photo-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.photo-card img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
.photo-card:hover img { transform: scale(1.06); }
.photo-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(transparent, rgba(0,0,0,0.75));
  padding: 20px 14px 14px;
  opacity: 0;
  transition: var(--transition);
}
.photo-card:hover .photo-overlay { opacity: 1; }
.photo-overlay p { color: white; font-size: 13px; font-weight: 500; }

/* ===== 专家卡片 ===== */
.expert-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.expert-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 28px 20px;
  text-align: center;
  box-shadow: var(--shadow);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.expert-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
}
.expert-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
.expert-avatar {
  width: 90px;
  height: 90px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto 14px;
  border: 3px solid var(--border);
  transition: var(--transition);
}
.expert-card:hover .expert-avatar { border-color: var(--accent); }
.expert-name { font-size: 17px; font-weight: 700; color: var(--primary); margin-bottom: 4px; }
.expert-role {
  font-size: 13px;
  color: var(--accent);
  margin-bottom: 10px;
  font-weight: 600;
}
.expert-desc { font-size: 13px; color: var(--text-light); line-height: 1.6; margin-bottom: 14px; }
.expert-tags { display: flex; flex-wrap: wrap; gap: 6px; justify-content: center; margin-bottom: 14px; }
.expert-tag {
  font-size: 11px;
  padding: 3px 10px;
  background: #eef1f6;
  border-radius: 20px;
  color: var(--text-light);
}
.expert-actions { display: flex; gap: 8px; justify-content: center; }
.btn-sm {
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  transition: var(--transition);
}
.btn-primary { background: var(--primary); color: white; }
.btn-primary:hover { background: var(--primary-light); color: white; }
.btn-outline { border: 1px solid var(--primary); color: var(--primary); }
.btn-outline:hover { background: var(--primary); color: white; }

/* ===== 功能模块卡片 ===== */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.feature-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 28px 20px;
  text-align: center;
  box-shadow: var(--shadow);
  transition: var(--transition);
  cursor: pointer;
}
.feature-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.feature-icon {
  width: 60px;
  height: 60px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  font-size: 28px;
}
.feature-title { font-size: 16px; font-weight: 700; color: var(--primary); margin-bottom: 8px; }
.feature-desc { font-size: 13px; color: var(--text-light); line-height: 1.6; }

/* ===== AI赋能模块 ===== */
.ai-section {
  background: linear-gradient(135deg, var(--bg-dark) 0%, #1a2a3a 100%);
  padding: 60px 0;
}
.ai-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.ai-card {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius);
  padding: 28px;
  transition: var(--transition);
}
.ai-card:hover {
  background: rgba(255,107,157,0.12);
  border-color: var(--accent);
  transform: translateY(-4px);
}
.ai-icon { font-size: 36px; margin-bottom: 14px; }
.ai-title { font-size: 18px; font-weight: 700; color: var(--text-white); margin-bottom: 10px; }
.ai-desc { font-size: 14px; color: rgba(255,255,255,0.7); line-height: 1.7; }

/* ===== 社区功能 ===== */
.community-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.community-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
  display: flex;
  align-items: flex-start;
  gap: 16px;
  transition: var(--transition);
}
.community-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-hover); }
.community-icon {
  width: 50px;
  height: 50px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  flex-shrink: 0;
}
.community-info h4 { font-size: 16px; font-weight: 700; color: var(--primary); margin-bottom: 6px; }
.community-info p { font-size: 13px; color: var(--text-light); line-height: 1.6; }

/* ===== 合作品牌 ===== */
.brands-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 16px;
  align-items: center;
}
.brand-item {
  background: var(--bg-card);
  border-radius: var(--radius-sm);
  padding: 16px;
  text-align: center;
  box-shadow: var(--shadow);
  transition: var(--transition);
  font-size: 13px;
  font-weight: 600;
  color: var(--text-light);
  border: 1px solid var(--border);
}
.brand-item:hover { border-color: var(--primary); color: var(--primary); transform: translateY(-2px); }

/* ===== FAQ ===== */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  background: var(--bg-card);
  border-radius: var(--radius);
  margin-bottom: 12px;
  box-shadow: var(--shadow);
  overflow: hidden;
}
.faq-question {
  padding: 18px 24px;
  font-size: 15px;
  font-weight: 600;
  color: var(--primary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: var(--transition);
}
.faq-question:hover { background: #f0f4f8; }
.faq-question.active { background: var(--primary); color: white; }
.faq-arrow {
  width: 20px;
  height: 20px;
  transition: var(--transition);
  flex-shrink: 0;
}
.faq-question.active .faq-arrow { transform: rotate(180deg); }
.faq-answer {
  padding: 0 24px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.8;
}
.faq-answer.open { max-height: 300px; padding: 16px 24px; }

/* ===== 用户评价 ===== */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.review-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow);
  transition: var(--transition);
}
.review-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-hover); }
.review-stars { color: var(--gold); font-size: 16px; margin-bottom: 10px; }
.review-text { font-size: 14px; color: var(--text-main); line-height: 1.7; margin-bottom: 14px; font-style: italic; }
.review-author { display: flex; align-items: center; gap: 10px; }
.review-avatar {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 15px;
  font-weight: 700;
  flex-shrink: 0;
}
.review-name { font-size: 14px; font-weight: 600; color: var(--primary); }
.review-date { font-size: 12px; color: var(--text-light); }

/* ===== 加入社区指南 ===== */
.guide-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  position: relative;
}
.guide-steps::before {
  content: '';
  position: absolute;
  top: 35px;
  left: 12.5%;
  right: 12.5%;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  z-index: 0;
}
.guide-step {
  text-align: center;
  position: relative;
  z-index: 1;
}
.step-num {
  width: 70px;
  height: 70px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: white;
  font-size: 24px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  box-shadow: 0 4px 16px rgba(255,107,157,0.3);
}
.step-title { font-size: 16px; font-weight: 700; color: var(--primary); margin-bottom: 8px; }
.step-desc { font-size: 13px; color: var(--text-light); line-height: 1.6; }

/* ===== 联系我们 ===== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}
.contact-info h3 { font-size: 22px; font-weight: 700; color: var(--primary); margin-bottom: 20px; }
.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 18px;
}
.contact-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}
.contact-label { font-size: 13px; color: var(--text-light); margin-bottom: 3px; }
.contact-value { font-size: 15px; font-weight: 600; color: var(--primary); }
.qrcode-wrap { display: flex; gap: 24px; flex-wrap: wrap; }
.qrcode-item { text-align: center; }
.qrcode-img {
  width: 120px;
  height: 120px;
  border-radius: var(--radius-sm);
  border: 2px solid var(--border);
  background: #f0f4f8;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 8px;
  overflow: hidden;
}
.qrcode-label { font-size: 13px; color: var(--text-light); }

/* ===== 社交分享 ===== */
.share-bar {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 20px 24px;
  display: flex;
  align-items: center;
  gap: 16px;
  box-shadow: var(--shadow);
  flex-wrap: wrap;
}
.share-label { font-size: 14px; font-weight: 600; color: var(--text-main); }
.share-btns { display: flex; gap: 10px; flex-wrap: wrap; }
.share-btn {
  padding: 8px 16px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  color: white;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 6px;
}
.share-btn:hover { opacity: 0.85; transform: translateY(-2px); color: white; }
.share-wechat { background: #07c160; }
.share-weibo { background: #e6162d; }
.share-douyin { background: #010101; }
.share-bilibili { background: #00a1d6; }

/* ===== 底部 ===== */
.site-footer {
  background: var(--bg-dark);
  color: rgba(255,255,255,0.75);
  padding: 60px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-brand .logo-text { color: white; font-size: 24px; margin-bottom: 14px; }
.footer-brand p { font-size: 14px; line-height: 1.8; color: rgba(255,255,255,0.6); margin-bottom: 20px; }
.footer-social { display: flex; gap: 10px; }
.social-icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: rgba(255,255,255,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  transition: var(--transition);
  color: rgba(255,255,255,0.7);
}
.social-icon:hover { background: var(--accent); color: white; }
.footer-col h4 { font-size: 15px; font-weight: 700; color: white; margin-bottom: 16px; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { font-size: 13px; color: rgba(255,255,255,0.6); transition: var(--transition); }
.footer-col ul li a:hover { color: var(--accent); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: rgba(255,255,255,0.5);
  flex-wrap: wrap;
  gap: 10px;
}
.footer-bottom a { color: rgba(255,255,255,0.5); }
.footer-bottom a:hover { color: var(--accent); }
.update-time { color: rgba(255,255,255,0.4); font-size: 12px; }

/* ===== 标签页 ===== */
.tab-nav {
  display: flex;
  gap: 4px;
  border-bottom: 2px solid var(--border);
  margin-bottom: 24px;
  overflow-x: auto;
}
.tab-btn {
  padding: 10px 20px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-light);
  background: none;
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
  transition: var(--transition);
  white-space: nowrap;
}
.tab-btn.active { color: var(--primary); border-bottom: 2px solid var(--primary); margin-bottom: -2px; }
.tab-btn:hover { color: var(--primary); background: #f0f4f8; }
.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* ===== 统计数字 ===== */
.stats-bar {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  padding: 30px 0;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  text-align: center;
}
.stat-item { color: white; }
.stat-num {
  font-size: 36px;
  font-weight: 700;
  color: var(--gold);
  line-height: 1;
  margin-bottom: 6px;
}
.stat-label { font-size: 14px; color: rgba(255,255,255,0.8); }

/* ===== 通用按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 30px;
  font-size: 15px;
  font-weight: 600;
  transition: var(--transition);
  cursor: pointer;
}
.btn-lg { padding: 14px 36px; font-size: 16px; }
.btn-accent { background: var(--accent); color: white; }
.btn-accent:hover { background: var(--accent-hover); color: white; transform: translateY(-2px); }
.btn-primary-full { background: var(--primary); color: white; }
.btn-primary-full:hover { background: var(--primary-light); color: white; transform: translateY(-2px); }
.btn-gold { background: var(--gold); color: var(--primary); }
.btn-gold:hover { background: var(--gold-dark); color: var(--primary); transform: translateY(-2px); }

/* ===== 内页横幅 ===== */
.page-hero {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  padding: 50px 0;
  color: white;
  text-align: center;
}
.page-hero h1 { font-size: 32px; font-weight: 700; margin-bottom: 10px; }
.page-hero p { font-size: 16px; color: rgba(255,255,255,0.8); max-width: 600px; margin: 0 auto; }

/* ===== 侧边栏 ===== */
.page-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 30px;
  align-items: start;
}
.sidebar-widget {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
  margin-bottom: 20px;
}
.sidebar-widget h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--accent);
}
.sidebar-list li {
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
}
.sidebar-list li:last-child { border-bottom: none; }
.sidebar-list li a { color: var(--text-main); }
.sidebar-list li a:hover { color: var(--accent); }

/* ===== 分页 ===== */
.pagination {
  display: flex;
  justify-content: center;
  gap: 8px;
  padding: 30px 0;
  flex-wrap: wrap;
}
.page-btn {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 600;
  border: 1px solid var(--border);
  color: var(--text-main);
  transition: var(--transition);
  cursor: pointer;
  background: var(--bg-card);
}
.page-btn:hover, .page-btn.active { background: var(--primary); color: white; border-color: var(--primary); }

/* ===== 通知弹窗 ===== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: var(--transition);
}
.modal-overlay.open { opacity: 1; pointer-events: all; }
.modal {
  background: white;
  border-radius: var(--radius);
  padding: 32px;
  max-width: 480px;
  width: 90%;
  transform: scale(0.9);
  transition: var(--transition);
}
.modal-overlay.open .modal { transform: scale(1); }

/* ===== 回到顶部 ===== */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 44px;
  height: 44px;
  background: var(--primary);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  cursor: pointer;
  box-shadow: 0 4px 16px rgba(26,58,82,0.3);
  transition: var(--transition);
  opacity: 0;
  pointer-events: none;
  z-index: 999;
}
.back-to-top.visible { opacity: 1; pointer-events: all; }
.back-to-top:hover { background: var(--accent); transform: translateY(-3px); }

/* ===== 懒加载占位 ===== */
.lazy-img {
  background: linear-gradient(90deg, #e8ecf0 25%, #f5f7fa 50%, #e8ecf0 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
}
@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

/* ===== 标签云 ===== */
.tag-cloud { display: flex; flex-wrap: wrap; gap: 8px; }
.tag {
  padding: 5px 14px;
  background: #eef1f6;
  border-radius: 20px;
  font-size: 13px;
  color: var(--text-light);
  cursor: pointer;
  transition: var(--transition);
  border: 1px solid transparent;
}
.tag:hover { background: var(--primary); color: white; border-color: var(--primary); }
.tag.active { background: var(--accent); color: white; border-color: var(--accent); }

/* ===== 视频播放器模态框 ===== */
.video-modal {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.9);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: var(--transition);
}
.video-modal.open { opacity: 1; pointer-events: all; }
.video-modal-inner {
  width: 90%;
  max-width: 900px;
  position: relative;
}
.video-modal video {
  width: 100%;
  border-radius: var(--radius);
  background: black;
}
.video-modal-close {
  position: absolute;
  top: -40px;
  right: 0;
  color: white;
  font-size: 28px;
  cursor: pointer;
  background: none;
}

/* ===== 热门标签 ===== */
.hot-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}
.hot-tag {
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}
.hot-tag-1 { background: #fff0f5; color: var(--accent); border: 1px solid var(--accent); }
.hot-tag-2 { background: #f0f4ff; color: var(--primary); border: 1px solid var(--primary); }
.hot-tag-3 { background: #fffbf0; color: var(--gold-dark); border: 1px solid var(--gold-dark); }
.hot-tag:hover { transform: translateY(-2px); }

/* ===== 响应式 ===== */
@media (max-width: 1200px) {
  .video-grid { grid-template-columns: repeat(3, 1fr); }
  .photo-grid { grid-template-columns: repeat(3, 1fr); }
  .expert-grid { grid-template-columns: repeat(3, 1fr); }
  .feature-grid { grid-template-columns: repeat(3, 1fr); }
  .reviews-grid { grid-template-columns: repeat(2, 1fr); }
  .brands-grid { grid-template-columns: repeat(4, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 900px) {
  .video-grid { grid-template-columns: repeat(2, 1fr); }
  .photo-grid { grid-template-columns: repeat(2, 1fr); }
  .expert-grid { grid-template-columns: repeat(2, 1fr); }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .ai-grid { grid-template-columns: repeat(2, 1fr); }
  .community-grid { grid-template-columns: repeat(2, 1fr); }
  .guide-steps { grid-template-columns: repeat(2, 1fr); }
  .guide-steps::before { display: none; }
  .contact-grid { grid-template-columns: 1fr; }
  .page-layout { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-slider { height: 320px; }
  .slide-content { padding: 0 30px; }
  .slide-title { font-size: 24px; }
  .brands-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 640px) {
  .main-nav { display: none; }
  .main-nav.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 70px;
    left: 0;
    right: 0;
    background: white;
    padding: 16px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.12);
    z-index: 999;
  }
  .hamburger { display: flex; }
  .video-grid { grid-template-columns: repeat(2, 1fr); }
  .photo-grid { grid-template-columns: repeat(2, 1fr); }
  .expert-grid { grid-template-columns: 1fr; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .ai-grid { grid-template-columns: 1fr; }
  .community-grid { grid-template-columns: 1fr; }
  .guide-steps { grid-template-columns: 1fr; }
  .reviews-grid { grid-template-columns: 1fr; }
  .brands-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-slider { height: 240px; }
  .slide-title { font-size: 18px; }
  .slide-desc { display: none; }
  .section-title { font-size: 22px; }
  .search-tags { display: none; }
  .header-inner { height: 60px; }
  .logo-img { height: 36px; }
  .logo-text { font-size: 18px; }
}

/* ===== 内页Hero区域 ===== */
.page-hero { padding: 60px 0; text-align: center; color: white; }
.page-hero-title { font-size: 36px; font-weight: 800; margin-bottom: 14px; color: white; }
.page-hero-desc { font-size: 16px; color: rgba(255,255,255,0.85); max-width: 640px; margin: 0 auto 20px; }
.page-hero-tags { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.hero-tag { background: rgba(255,255,255,0.18); color: white; padding: 6px 16px; border-radius: 20px; font-size: 13px; font-weight: 600; }

/* ===== 面包屑 ===== */
.breadcrumb-bar { background: white; border-bottom: 1px solid var(--border); padding: 10px 0; }
.breadcrumb { max-width: 1280px; margin: 0 auto; padding: 0 20px; font-size: 13px; color: var(--text-light); display: flex; align-items: center; gap: 6px; }
.breadcrumb a { color: var(--text-light); }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb span { color: var(--text-light); }

/* ===== 视频徽章 ===== */
.rank-badge { position: absolute; top: 8px; left: 8px; padding: 3px 10px; border-radius: 20px; font-size: 12px; font-weight: 700; background: rgba(26,58,82,0.85); color: white; }
.rank-1 { background: linear-gradient(135deg,#ffd700,#e6a800); color: #1a3a52; }
.rank-2 { background: linear-gradient(135deg,#c0c0c0,#909090); color: white; }
.rank-3 { background: linear-gradient(135deg,#cd7f32,#a0522d); color: white; }
.rank-n { background: rgba(26,58,82,0.75); color: white; }
.live-badge { background: #e53935 !important; color: white !important; animation: pulse 1.5s infinite; }
@keyframes pulse { 0%,100%{opacity:1;} 50%{opacity:0.7;} }
.video-tag-badge { position: absolute; top: 8px; right: 8px; padding: 3px 10px; border-radius: 20px; font-size: 11px; font-weight: 600; background: rgba(255,107,157,0.9); color: white; }

/* ===== 筛选栏 ===== */
.filter-bar { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.filter-label { font-size: 14px; color: var(--text-light); font-weight: 600; flex-shrink: 0; }
.filter-btn { padding: 6px 16px; border-radius: 20px; font-size: 13px; color: var(--text-light); border: 1px solid var(--border); background: white; transition: var(--transition); }
.filter-btn:hover, .filter-btn.active { background: var(--primary); color: white; border-color: var(--primary); }

/* ===== 标签链接 ===== */
.tag-link { display: inline-block; padding: 6px 16px; border-radius: 20px; font-size: 13px; background: white; color: var(--primary); border: 1px solid var(--border); transition: var(--transition); }
.tag-link:hover { background: var(--accent); color: white; border-color: var(--accent); }

/* ===== footer-col ===== */
.footer-col { min-width: 0; }
.footer-col h4 { font-size: 15px; font-weight: 700; color: white; margin-bottom: 16px; }
.footer-brand { min-width: 0; }

/* ===== 搜索标签 ===== */
.search-tags { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 8px; }
.search-tag { padding: 4px 12px; background: rgba(26,58,82,0.08); border-radius: 14px; font-size: 12px; color: var(--primary); cursor: pointer; transition: var(--transition); }
.search-tag:hover { background: var(--accent); color: white; }

/* ===== 视频卡片视频时长 ===== */
.video-duration { position: absolute; bottom: 8px; right: 8px; background: rgba(0,0,0,0.72); color: white; font-size: 11px; padding: 2px 7px; border-radius: 4px; font-weight: 600; }
.video-quality { position: absolute; top: 8px; right: 8px; background: rgba(26,58,82,0.85); color: var(--gold); font-size: 11px; padding: 2px 7px; border-radius: 4px; font-weight: 700; }