/**
 * 糖心传媒 - 主样式文件
 * 域名: 567809.cn
 * 原创设计，禁止抄袭
 */

/* ===================================
   CSS变量（原创配色方案）
   =================================== */
:root {
  /* 主色：糖心玫瑰红 */
  --primary: #e91e8c;
  --primary-dark: #c2185b;
  --primary-light: #f48fb1;
  /* 辅色：糖心紫 */
  --secondary: #7b1fa2;
  --secondary-light: #ce93d8;
  /* 辅色：糖心橙 */
  --accent: #ff6f00;
  --gold: #ffd700;
  /* 深色背景 */
  --dark: #0d0d1a;
  --dark-2: #1a1a2e;
  --dark-3: #16213e;
  /* 文字颜色 */
  --text-dark: #1a1a2e;
  --text-mid: #4a4a6a;
  --text-light: #8a8aaa;
  /* 背景 */
  --bg-white: #ffffff;
  --bg-light: #f8f6ff;
  --bg-card: #ffffff;
  /* 边框 */
  --border: #e8e4f4;
  --border-dark: #d0c8e8;
  /* 圆角 */
  --radius-sm: 8px;
  --radius: 12px;
  --radius-lg: 20px;
  --radius-xl: 32px;
  /* 阴影 */
  --shadow-sm: 0 2px 8px rgba(233,30,140,0.08);
  --shadow: 0 8px 32px rgba(233,30,140,0.12);
  --shadow-lg: 0 20px 60px rgba(233,30,140,0.18);
  /* 过渡 */
  --transition: 0.3s ease;
}

/* ===================================
   全局重置
   =================================== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'WenQuanYi Micro Hei', sans-serif;
  color: var(--text-dark);
  background: var(--bg-white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--primary); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
input, textarea { font-family: inherit; }

/* ===================================
   容器
   =================================== */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===================================
   顶部公告栏
   =================================== */
.top-bar {
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  color: #fff;
  text-align: center;
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 500;
}
.top-bar a { color: #fff; text-decoration: underline; }

/* ===================================
   导航栏
   =================================== */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow var(--transition);
}
.navbar.scrolled { box-shadow: 0 4px 24px rgba(233,30,140,0.12); }
.nav-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  gap: 24px;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.nav-logo img {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--primary-light);
}
.nav-logo-text { display: flex; flex-direction: column; }
.nav-logo-text .brand-name {
  font-size: 20px;
  font-weight: 900;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
}
.nav-logo-text .brand-sub { font-size: 10px; color: var(--text-light); line-height: 1; }
.nav-menu {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1;
}
.nav-menu a {
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  color: var(--text-mid);
  transition: all var(--transition);
  white-space: nowrap;
}
.nav-menu a:hover, .nav-menu a.active {
  color: var(--primary);
  background: rgba(233,30,140,0.08);
}
.nav-actions { flex-shrink: 0; }
.btn-nav-join {
  display: inline-block;
  padding: 8px 20px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff !important;
  border-radius: var(--radius-xl);
  font-size: 14px;
  font-weight: 600;
  transition: all var(--transition);
  box-shadow: 0 4px 16px rgba(233,30,140,0.3);
}
.btn-nav-join:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(233,30,140,0.4);
}
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-dark);
  border-radius: 2px;
  transition: all var(--transition);
}

/* ===================================
   搜索栏
   =================================== */
.search-bar-wrapper {
  background: var(--bg-light);
  border-bottom: 1px solid var(--border);
  padding: 12px 0;
}
.search-bar-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}
.search-form {
  display: flex;
  align-items: center;
  background: #fff;
  border: 2px solid var(--border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: border-color var(--transition);
  flex: 1;
  min-width: 200px;
  max-width: 480px;
}
.search-form:focus-within { border-color: var(--primary); }
.search-form input {
  flex: 1;
  padding: 8px 16px;
  border: none;
  outline: none;
  font-size: 14px;
  background: transparent;
  color: var(--text-dark);
}
.search-form button {
  padding: 8px 20px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  border-radius: 0 var(--radius-xl) var(--radius-xl) 0;
  transition: opacity var(--transition);
}
.search-form button:hover { opacity: 0.9; }
.search-tags { display: flex; gap: 8px; flex-wrap: wrap; }
.search-tag {
  padding: 4px 12px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  font-size: 12px;
  color: var(--text-mid);
  cursor: pointer;
  transition: all var(--transition);
}
.search-tag:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(233,30,140,0.05);
}

/* ===================================
   Hero区域
   =================================== */
.hero {
  background: linear-gradient(135deg, var(--dark) 0%, var(--dark-2) 50%, var(--dark-3) 100%);
  padding: 80px 0;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(233,30,140,0.15) 0%, transparent 70%);
  pointer-events: none;
}
.hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(123,31,162,0.12) 0%, transparent 70%);
  pointer-events: none;
}
.hero-content {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
  position: relative;
  z-index: 1;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 16px;
  background: rgba(233,30,140,0.2);
  border: 1px solid rgba(233,30,140,0.4);
  border-radius: var(--radius-xl);
  color: var(--primary-light);
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 20px;
}
.hero-text h1 {
  font-size: 48px;
  font-weight: 900;
  color: #fff;
  line-height: 1.2;
  margin-bottom: 20px;
}
.hero-text h1 span {
  background: linear-gradient(135deg, var(--primary), var(--secondary-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-text p {
  font-size: 16px;
  color: rgba(255,255,255,0.7);
  line-height: 1.8;
  margin-bottom: 32px;
}
.hero-stats {
  display: flex;
  gap: 32px;
  margin-bottom: 32px;
}
.hero-stat { text-align: center; }
.hero-stat .num {
  display: block;
  font-size: 28px;
  font-weight: 800;
  color: var(--primary-light);
}
.hero-stat .label { font-size: 12px; color: rgba(255,255,255,0.5); }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-visual { position: relative; }
.hero-img-main {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 32px 80px rgba(0,0,0,0.4);
  position: relative;
}
.hero-img-main img { width: 100%; height: 420px; object-fit: cover; }
.hero-img-badge {
  position: absolute;
  bottom: 16px;
  left: 16px;
  background: rgba(0,0,0,0.7);
  backdrop-filter: blur(8px);
  color: #fff;
  padding: 8px 16px;
  border-radius: var(--radius-xl);
  font-size: 13px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.live-dot {
  width: 8px;
  height: 8px;
  background: #ff4444;
  border-radius: 50%;
  animation: pulse 1.5s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.3); }
}

/* ===================================
   按钮
   =================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 24px;
  border-radius: var(--radius-xl);
  font-size: 15px;
  font-weight: 600;
  transition: all var(--transition);
  cursor: pointer;
  border: 2px solid transparent;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff;
  box-shadow: 0 4px 16px rgba(233,30,140,0.3);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(233,30,140,0.4);
  color: #fff;
}
.btn-white {
  background: rgba(255,255,255,0.15);
  color: #fff;
  border-color: rgba(255,255,255,0.3);
  backdrop-filter: blur(8px);
}
.btn-white:hover {
  background: rgba(255,255,255,0.25);
  color: #fff;
  transform: translateY(-2px);
}
.btn-outline {
  background: transparent;
  color: var(--primary);
  border-color: var(--primary);
}
.btn-outline:hover {
  background: var(--primary);
  color: #fff;
  transform: translateY(-2px);
}
.btn-lg { padding: 14px 32px; font-size: 16px; }
.btn-sm { padding: 6px 16px; font-size: 13px; }

/* ===================================
   Section通用
   =================================== */
.section { padding: 80px 0; }
.section-sm { padding: 40px 0; }
.bg-light { background: var(--bg-light); }
.section-header { text-align: center; margin-bottom: 48px; }
.section-label {
  display: inline-block;
  padding: 4px 16px;
  background: rgba(233,30,140,0.1);
  color: var(--primary);
  border-radius: var(--radius-xl);
  font-size: 13px;
  font-weight: 700;
  margin-bottom: 12px;
  letter-spacing: 0.5px;
}
.section-title {
  font-size: 36px;
  font-weight: 900;
  color: var(--text-dark);
  margin-bottom: 16px;
  line-height: 1.2;
}
.section-title span {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.section-desc {
  font-size: 16px;
  color: var(--text-mid);
  max-width: 640px;
  margin: 0 auto;
  line-height: 1.7;
}
.text-center { text-align: center; }
.mt-32 { margin-top: 32px; }
.mb-32 { margin-bottom: 32px; }

/* ===================================
   视频卡片
   =================================== */
.video-grid { display: grid; gap: 24px; }
.video-grid-4 { grid-template-columns: repeat(4, 1fr); }
.video-grid-3 { grid-template-columns: repeat(3, 1fr); }
.video-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: all var(--transition);
  cursor: pointer;
}
.video-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: var(--primary-light);
}
.video-thumb {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--dark-2);
}
.video-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.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: 52px;
  height: 52px;
  background: rgba(233,30,140,0.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: all var(--transition);
  box-shadow: 0 4px 20px rgba(233,30,140,0.5);
}
.video-play-btn svg {
  width: 24px;
  height: 24px;
  fill: #fff;
  margin-left: 3px;
}
.video-card:hover .video-play-btn {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
}
.video-tag {
  position: absolute;
  top: 10px;
  left: 10px;
  background: rgba(233,30,140,0.85);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: var(--radius-xl);
  backdrop-filter: blur(4px);
}
.video-duration {
  position: absolute;
  bottom: 10px;
  right: 10px;
  background: rgba(0,0,0,0.7);
  color: #fff;
  font-size: 11px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: var(--radius-sm);
}
.video-info { padding: 14px; }
.video-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-dark);
  line-height: 1.5;
  margin-bottom: 10px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.video-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12px;
  color: var(--text-light);
}
.video-meta-left { display: flex; gap: 12px; align-items: center; }
.video-views, .video-likes {
  display: flex;
  align-items: center;
  gap: 4px;
}
.video-views svg, .video-likes svg {
  width: 14px;
  height: 14px;
  fill: currentColor;
}

/* ===================================
   功能卡片
   =================================== */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: all var(--transition);
}
.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: var(--primary-light);
}
.feature-icon {
  font-size: 36px;
  margin-bottom: 16px;
}
.feature-title {
  font-size: 18px;
  font-weight: 800;
  color: var(--text-dark);
  margin-bottom: 10px;
}
.feature-desc {
  font-size: 14px;
  color: var(--text-mid);
  line-height: 1.7;
}

/* ===================================
   AI模块
   =================================== */
.ai-section {
  background: linear-gradient(135deg, var(--dark) 0%, var(--dark-2) 100%);
  position: relative;
  overflow: hidden;
}
.ai-section::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23e91e8c' fill-opacity='0.04'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}
.ai-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  position: relative;
  z-index: 1;
}
.ai-card {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(233,30,140,0.2);
  border-radius: var(--radius);
  padding: 28px;
  transition: all var(--transition);
  backdrop-filter: blur(8px);
}
.ai-card:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(233,30,140,0.5);
  transform: translateY(-4px);
}
.ai-icon { font-size: 36px; margin-bottom: 16px; }
.ai-title { font-size: 18px; font-weight: 800; color: #fff; margin-bottom: 10px; }
.ai-desc { font-size: 14px; color: rgba(255,255,255,0.65); line-height: 1.7; }

/* ===================================
   社区功能
   =================================== */
.community-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.community-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: all var(--transition);
}
.community-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: var(--primary-light);
}
.community-icon { font-size: 40px; margin-bottom: 16px; }
.community-title { font-size: 18px; font-weight: 800; color: var(--text-dark); margin-bottom: 10px; }
.community-desc { font-size: 14px; color: var(--text-mid); line-height: 1.7; margin-bottom: 16px; }
.community-stats { display: flex; flex-direction: column; gap: 6px; }
.community-stat {
  font-size: 12px;
  color: var(--primary);
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 6px;
}

/* ===================================
   专家展示
   =================================== */
.expert-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.expert-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  text-align: center;
  transition: all var(--transition);
}
.expert-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: var(--primary-light);
}
.expert-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto 16px;
  border: 3px solid var(--primary-light);
}
.expert-name { font-size: 18px; font-weight: 800; color: var(--text-dark); margin-bottom: 4px; }
.expert-role { font-size: 13px; color: var(--primary); font-weight: 600; margin-bottom: 10px; }
.expert-desc { font-size: 13px; color: var(--text-mid); line-height: 1.6; margin-bottom: 12px; }
.expert-awards { display: flex; gap: 6px; justify-content: center; flex-wrap: wrap; margin-bottom: 16px; }
.award-badge {
  padding: 2px 10px;
  background: rgba(233,30,140,0.1);
  color: var(--primary);
  border-radius: var(--radius-xl);
  font-size: 11px;
  font-weight: 600;
}
.expert-actions { display: flex; gap: 8px; justify-content: center; }

/* ===================================
   合作伙伴
   =================================== */
.partner-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.partner-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  text-align: center;
  font-size: 15px;
  font-weight: 700;
  color: var(--text-mid);
  transition: all var(--transition);
}
.partner-item:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(233,30,140,0.05);
  transform: translateY(-2px);
}

/* ===================================
   步骤
   =================================== */
.howto-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  position: relative;
}
.howto-steps::before {
  content: '';
  position: absolute;
  top: 28px;
  left: 12%;
  right: 12%;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  z-index: 0;
}
.howto-step {
  text-align: center;
  position: relative;
  z-index: 1;
}
.step-num {
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff;
  font-size: 22px;
  font-weight: 900;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  box-shadow: 0 8px 24px rgba(233,30,140,0.3);
}
.step-title { font-size: 16px; font-weight: 800; color: var(--text-dark); margin-bottom: 8px; }
.step-desc { font-size: 13px; color: var(--text-mid); line-height: 1.6; }

/* ===================================
   用户评价
   =================================== */
.review-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.review-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: all var(--transition);
}
.review-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: var(--primary-light);
}
.review-header { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
.review-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--primary-light);
}
.review-user-info .name { font-size: 14px; font-weight: 700; color: var(--text-dark); }
.review-user-info .date { font-size: 12px; color: var(--text-light); }
.review-stars { color: #ffd700; font-size: 14px; margin-bottom: 10px; }
.review-text { font-size: 13px; color: var(--text-mid); line-height: 1.7; margin-bottom: 12px; }
.review-tags { display: flex; gap: 6px; flex-wrap: wrap; }
.review-tag {
  padding: 2px 10px;
  background: var(--bg-light);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  font-size: 11px;
  color: var(--text-mid);
}

/* ===================================
   FAQ
   =================================== */
.faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color var(--transition);
}
.faq-item.open { border-color: var(--primary); }
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
  cursor: pointer;
  font-size: 15px;
  font-weight: 700;
  color: var(--text-dark);
  transition: background var(--transition);
}
.faq-question:hover { background: var(--bg-light); }
.faq-item.open .faq-question { color: var(--primary); }
.faq-question .icon {
  font-size: 20px;
  font-weight: 400;
  color: var(--primary);
  transition: transform var(--transition);
  flex-shrink: 0;
}
.faq-item.open .faq-question .icon { transform: rotate(45deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}
.faq-item.open .faq-answer { max-height: 300px; }
.faq-answer p {
  padding: 0 24px 18px;
  font-size: 14px;
  color: var(--text-mid);
  line-height: 1.8;
}

/* ===================================
   分享栏
   =================================== */
.share-bar { display: flex; align-items: center; gap: 8px; }
.share-label { font-size: 13px; color: var(--text-mid); }
.share-btn {
  padding: 6px 16px;
  border-radius: var(--radius-xl);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  border: 1px solid var(--border);
  color: var(--text-mid);
}
.share-btn:hover { background: var(--primary); color: #fff; border-color: var(--primary); }

/* ===================================
   标签云
   =================================== */
.tag-cloud { display: flex; gap: 8px; flex-wrap: wrap; }
.tag {
  padding: 6px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  font-size: 13px;
  color: var(--text-mid);
  cursor: pointer;
  transition: all var(--transition);
}
.tag:hover, .tag.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

/* ===================================
   分页
   =================================== */
.pagination {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 40px;
}
.page-btn {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  color: var(--text-mid);
}
.page-btn:hover, .page-btn.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

/* ===================================
   面包屑
   =================================== */
.breadcrumb {
  background: var(--bg-light);
  border-bottom: 1px solid var(--border);
  padding: 12px 0;
}
.breadcrumb-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  font-size: 13px;
  color: var(--text-light);
  display: flex;
  align-items: center;
  gap: 8px;
}
.breadcrumb-inner a { color: var(--text-mid); }
.breadcrumb-inner a:hover { color: var(--primary); }
.breadcrumb-inner .sep { color: var(--border-dark); }
.breadcrumb-inner .current { color: var(--primary); font-weight: 600; }

/* ===================================
   页面Hero（内页）
   =================================== */
.page-hero {
  background: linear-gradient(135deg, var(--dark) 0%, var(--dark-2) 100%);
  padding: 60px 0;
  text-align: center;
}
.page-hero h1 {
  font-size: 40px;
  font-weight: 900;
  color: #fff;
  margin-bottom: 12px;
}
.page-hero h1 span {
  background: linear-gradient(135deg, var(--primary), var(--secondary-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.page-hero p {
  font-size: 16px;
  color: rgba(255,255,255,0.65);
  max-width: 600px;
  margin: 0 auto;
}

/* ===================================
   公告栏
   =================================== */
.notice-bar {
  background: rgba(233,30,140,0.05);
  border: 1px solid rgba(233,30,140,0.15);
  border-left: 4px solid var(--primary);
  border-radius: var(--radius);
  padding: 16px 20px;
  display: flex;
  gap: 12px;
  align-items: flex-start;
  margin-bottom: 40px;
}
.notice-icon { font-size: 20px; flex-shrink: 0; margin-top: 2px; }
.notice-text { font-size: 14px; color: var(--text-mid); line-height: 1.8; }

/* ===================================
   底部Footer
   =================================== */
footer {
  background: var(--dark);
  color: rgba(255,255,255,0.7);
}
.footer-top { padding: 64px 0 40px; border-bottom: 1px solid rgba(255,255,255,0.08); }
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 48px;
}
.footer-brand .logo-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}
.footer-brand .logo-wrap img {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  object-fit: cover;
}
.footer-brand .logo-wrap .brand-name {
  font-size: 20px;
  font-weight: 900;
  background: linear-gradient(135deg, var(--primary), var(--secondary-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.footer-brand p { font-size: 13px; line-height: 1.8; margin-bottom: 20px; }
.footer-social { display: flex; gap: 10px; }
.social-btn {
  width: 36px;
  height: 36px;
  background: rgba(255,255,255,0.08);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition);
}
.social-btn:hover { background: var(--primary); color: #fff; }
.footer-col h4 {
  font-size: 15px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 16px;
}
.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col ul li a {
  font-size: 13px;
  color: rgba(255,255,255,0.55);
  transition: color var(--transition);
}
.footer-col ul li a:hover { color: var(--primary-light); }
.footer-bottom {
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  color: rgba(255,255,255,0.4);
}
.footer-bottom a { color: rgba(255,255,255,0.55); }
.footer-bottom a:hover { color: var(--primary-light); }
.footer-links { display: flex; gap: 20px; }

/* ===================================
   滚动到顶部
   =================================== */
.scroll-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff;
  border-radius: 50%;
  font-size: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  transform: translateY(20px);
  transition: all var(--transition);
  box-shadow: 0 4px 16px rgba(233,30,140,0.4);
  z-index: 999;
}
.scroll-top.visible { opacity: 1; transform: translateY(0); }
.scroll-top:hover { transform: translateY(-4px); }

/* ===================================
   响应式
   =================================== */
@media (max-width: 1200px) {
  .video-grid-4 { grid-template-columns: repeat(3, 1fr); }
  .expert-grid { grid-template-columns: repeat(2, 1fr); }
  .partner-grid { grid-template-columns: repeat(4, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 992px) {
  .hero-content { grid-template-columns: 1fr; gap: 40px; }
  .hero-visual { display: none; }
  .hero-text h1 { font-size: 36px; }
  .section-title { font-size: 28px; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .ai-grid { grid-template-columns: repeat(2, 1fr); }
  .community-grid { grid-template-columns: repeat(2, 1fr); }
  .howto-steps { grid-template-columns: repeat(2, 1fr); }
  .howto-steps::before { display: none; }
  .review-grid { grid-template-columns: repeat(2, 1fr); }
  .video-grid-4 { grid-template-columns: repeat(2, 1fr); }
  .video-grid-3 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .nav-menu { display: none; flex-direction: column; position: absolute; top: 64px; left: 0; right: 0; background: #fff; border-bottom: 1px solid var(--border); padding: 16px; gap: 4px; box-shadow: 0 8px 24px rgba(0,0,0,0.1); }
  .nav-menu.open { display: flex; }
  .nav-menu a { padding: 10px 16px; border-radius: var(--radius-sm); }
  .nav-toggle { display: flex; }
  .navbar { position: relative; }
  .section { padding: 48px 0; }
  .section-title { font-size: 24px; }
  .feature-grid { grid-template-columns: 1fr; }
  .ai-grid { grid-template-columns: 1fr; }
  .community-grid { grid-template-columns: 1fr; }
  .howto-steps { grid-template-columns: 1fr; }
  .review-grid { grid-template-columns: 1fr; }
  .expert-grid { grid-template-columns: repeat(2, 1fr); }
  .partner-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .hero { padding: 48px 0; }
  .hero-text h1 { font-size: 28px; }
  .hero-stats { gap: 16px; }
  .hero-stat .num { font-size: 22px; }
  .search-bar-inner { flex-direction: column; align-items: stretch; }
  .search-form { max-width: 100%; }
  .share-bar { flex-wrap: wrap; }
}
@media (max-width: 480px) {
  .video-grid-4, .video-grid-3 { grid-template-columns: 1fr; }
  .expert-grid { grid-template-columns: 1fr; }
  .partner-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-actions { flex-direction: column; }
  .btn-lg { width: 100%; }
  .page-hero h1 { font-size: 28px; }
}