/* 高清3D动漫 - 主样式文件 | ybhngmwp.cn */
/* 原创设计，版权所有 © 2025 高清3D动漫 */

:root {
  --primary: #FF6B00;
  --primary-dark: #E05A00;
  --secondary: #1A1A2E;
  --secondary-light: #16213E;
  --accent: #C0C0C0;
  --text-main: #1A1A2E;
  --text-light: #555;
  --text-white: #fff;
  --bg-light: #F8F8F8;
  --bg-white: #fff;
  --border: #E0E0E0;
  --radius: 10px;
  --radius-lg: 18px;
  --shadow: 0 4px 24px rgba(0,0,0,0.10);
  --shadow-hover: 0 8px 32px rgba(255,107,0,0.18);
  --transition: 0.28s cubic-bezier(.4,0,.2,1);
  --font-main: 'PingFang SC','Microsoft YaHei','Helvetica Neue',Arial,sans-serif;
}

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

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

body {
  font-family: var(--font-main);
  color: var(--text-main);
  background: var(--bg-white);
  line-height: 1.7;
  overflow-x: hidden;
}

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

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

ul, ol { list-style: none; }

/* ===== 顶部公告栏 ===== */
.top-bar {
  background: var(--secondary);
  color: var(--accent);
  font-size: 0.82rem;
  padding: 6px 0;
  text-align: center;
  letter-spacing: 0.03em;
}
.top-bar a { color: var(--primary); }

/* ===== 导航栏 ===== */
.site-header {
  background: #fff;
  box-shadow: 0 2px 12px rgba(0,0,0,0.08);
  position: sticky;
  top: 0;
  z-index: 1000;
}
.header-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}
.site-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}
.site-logo img {
  width: 44px;
  height: 44px;
  object-fit: contain;
  border-radius: 8px;
}
.site-logo .logo-text {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--secondary);
  letter-spacing: -0.02em;
}
.site-logo .logo-text span { color: var(--primary); }

.main-nav { display: flex; align-items: center; gap: 4px; }
.main-nav a {
  color: var(--text-main);
  font-size: 0.95rem;
  font-weight: 500;
  padding: 8px 14px;
  border-radius: 6px;
  transition: background var(--transition), color var(--transition);
  white-space: nowrap;
}
.main-nav a:hover, .main-nav a.active {
  background: var(--primary);
  color: #fff;
}

.header-actions { display: flex; align-items: center; gap: 10px; }
.btn-join {
  background: var(--primary);
  color: #fff;
  padding: 8px 20px;
  border-radius: 20px;
  font-size: 0.9rem;
  font-weight: 600;
  transition: background var(--transition), transform var(--transition);
  border: none;
  cursor: pointer;
}
.btn-join:hover { background: var(--primary-dark); transform: translateY(-1px); color: #fff; }

/* 汉堡菜单 */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 6px;
  border: none;
  background: none;
}
.hamburger span {
  display: block;
  width: 24px;
  height: 2.5px;
  background: var(--secondary);
  border-radius: 2px;
  transition: all var(--transition);
}

/* ===== 搜索框 ===== */
.search-bar-wrap {
  background: var(--bg-light);
  border-bottom: 1px solid var(--border);
  padding: 10px 0;
}
.search-bar-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.search-form {
  display: flex;
  align-items: center;
  background: #fff;
  border: 2px solid var(--border);
  border-radius: 24px;
  overflow: hidden;
  flex: 1;
  max-width: 560px;
  transition: border-color var(--transition);
}
.search-form:focus-within { border-color: var(--primary); }
.search-form input {
  flex: 1;
  border: none;
  outline: none;
  padding: 9px 18px;
  font-size: 0.95rem;
  font-family: var(--font-main);
  background: transparent;
  color: var(--text-main);
}
.search-form button {
  background: var(--primary);
  border: none;
  padding: 9px 20px;
  color: #fff;
  font-size: 0.95rem;
  cursor: pointer;
  transition: background var(--transition);
  font-family: var(--font-main);
}
.search-form button:hover { background: var(--primary-dark); }
.search-tags { display: flex; gap: 8px; flex-wrap: wrap; }
.search-tag {
  font-size: 0.8rem;
  color: var(--text-light);
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 3px 10px;
  cursor: pointer;
  transition: all var(--transition);
}
.search-tag:hover { border-color: var(--primary); color: var(--primary); }

/* ===== 面包屑 ===== */
.breadcrumb {
  max-width: 1280px;
  margin: 0 auto;
  padding: 10px 24px;
  font-size: 0.85rem;
  color: var(--text-light);
  display: flex;
  align-items: center;
  gap: 6px;
}
.breadcrumb a { color: var(--text-light); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .sep { color: var(--border); }
.breadcrumb .current { color: var(--primary); font-weight: 500; }

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

/* ===== 区块标题 ===== */
.section-head {
  text-align: center;
  margin-bottom: 40px;
}
.section-label {
  display: inline-block;
  background: rgba(255,107,0,0.1);
  color: var(--primary);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 4px 14px;
  border-radius: 20px;
  margin-bottom: 12px;
}
.section-title {
  font-size: 2rem;
  font-weight: 800;
  color: var(--secondary);
  line-height: 1.25;
  margin-bottom: 12px;
}
.section-title span { color: var(--primary); }
.section-desc {
  font-size: 1rem;
  color: var(--text-light);
  max-width: 560px;
  margin: 0 auto;
}

/* ===== Hero Banner ===== */
.hero-section {
  position: relative;
  min-height: 580px;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--secondary);
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('../images/hero-banner.jpg');
  background-size: cover;
  background-position: center;
  opacity: 0.45;
  transition: opacity 0.5s;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(26,26,46,0.92) 0%, rgba(26,26,46,0.55) 60%, rgba(26,26,46,0.15) 100%);
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 1280px;
  margin: 0 auto;
  padding: 80px 24px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 20px;
}
.hero-badge {
  background: var(--primary);
  color: #fff;
  font-size: 0.8rem;
  font-weight: 700;
  padding: 4px 14px;
  border-radius: 20px;
  letter-spacing: 0.08em;
}
.hero-title {
  font-size: 3rem;
  font-weight: 900;
  color: #fff;
  line-height: 1.15;
  max-width: 640px;
}
.hero-title span { color: var(--primary); }
.hero-subtitle {
  font-size: 1.1rem;
  color: rgba(255,255,255,0.78);
  max-width: 500px;
  line-height: 1.7;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.btn-primary {
  background: var(--primary);
  color: #fff;
  padding: 13px 32px;
  border-radius: 28px;
  font-size: 1rem;
  font-weight: 700;
  transition: all var(--transition);
  border: 2px solid var(--primary);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.btn-primary:hover { background: var(--primary-dark); border-color: var(--primary-dark); transform: translateY(-2px); color: #fff; }
.btn-outline {
  background: transparent;
  color: #fff;
  padding: 13px 32px;
  border-radius: 28px;
  font-size: 1rem;
  font-weight: 700;
  border: 2px solid rgba(255,255,255,0.5);
  transition: all var(--transition);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.btn-outline:hover { border-color: #fff; background: rgba(255,255,255,0.1); color: #fff; }
.hero-stats {
  display: flex;
  gap: 32px;
  flex-wrap: wrap;
  margin-top: 10px;
}
.hero-stat { text-align: left; }
.hero-stat .num { font-size: 1.7rem; font-weight: 900; color: var(--primary); }
.hero-stat .label { font-size: 0.82rem; color: rgba(255,255,255,0.65); }

/* ===== 视频卡片 ===== */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}
.video-card {
  background: #fff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow 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: var(--secondary);
}
.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); }
.play-btn {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0.25);
  opacity: 0;
  transition: opacity var(--transition);
}
.video-card:hover .play-btn { opacity: 1; }
.play-btn-icon {
  width: 56px;
  height: 56px;
  background: var(--primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transform: scale(0.85);
  transition: transform var(--transition);
  box-shadow: 0 4px 20px rgba(255,107,0,0.5);
}
.video-card:hover .play-btn-icon { transform: scale(1); }
.play-btn-icon svg { width: 22px; height: 22px; fill: #fff; margin-left: 3px; }
.video-duration {
  position: absolute;
  bottom: 10px;
  right: 10px;
  background: rgba(0,0,0,0.75);
  color: #fff;
  font-size: 0.78rem;
  padding: 2px 8px;
  border-radius: 4px;
}
.video-tag {
  position: absolute;
  top: 10px;
  left: 10px;
  background: var(--primary);
  color: #fff;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 4px;
  letter-spacing: 0.05em;
}
.video-info { padding: 16px; }
.video-title {
  font-size: 0.97rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 8px;
  line-height: 1.4;
  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: 0.8rem;
  color: var(--text-light);
}
.video-stats { display: flex; gap: 12px; align-items: center; }
.video-stats span { display: flex; align-items: center; gap: 4px; }
.video-stats svg { width: 14px; height: 14px; fill: var(--text-light); }

/* ===== 功能模块卡片 ===== */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 24px;
}
.feature-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 28px 22px;
  text-align: center;
  box-shadow: var(--shadow);
  transition: all var(--transition);
  border: 2px solid transparent;
}
.feature-card:hover {
  border-color: var(--primary);
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.feature-icon {
  width: 60px;
  height: 60px;
  background: rgba(255,107,0,0.1);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  font-size: 1.8rem;
  transition: background var(--transition);
}
.feature-card:hover .feature-icon { background: var(--primary); }
.feature-card:hover .feature-icon svg { fill: #fff; }
.feature-icon svg { width: 28px; height: 28px; fill: var(--primary); transition: fill var(--transition); }
.feature-card h3 { font-size: 1rem; font-weight: 700; margin-bottom: 8px; color: var(--secondary); }
.feature-card p { font-size: 0.85rem; color: var(--text-light); line-height: 1.6; }

/* ===== 专家卡片 ===== */
.expert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 28px;
}
.expert-card {
  background: #fff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: all var(--transition);
}
.expert-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-hover); }
.expert-photo {
  aspect-ratio: 4/3;
  overflow: hidden;
}
.expert-photo img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s; }
.expert-card:hover .expert-photo img { transform: scale(1.05); }
.expert-info { padding: 20px; }
.expert-name { font-size: 1.1rem; font-weight: 800; color: var(--secondary); margin-bottom: 4px; }
.expert-role {
  font-size: 0.82rem;
  color: var(--primary);
  font-weight: 600;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 6px;
}
.expert-role::before { content: ''; display: block; width: 20px; height: 2px; background: var(--primary); }
.expert-desc { font-size: 0.85rem; color: var(--text-light); line-height: 1.6; margin-bottom: 14px; }
.expert-awards { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 14px; }
.award-tag {
  font-size: 0.75rem;
  background: rgba(255,107,0,0.1);
  color: var(--primary);
  padding: 3px 10px;
  border-radius: 12px;
  font-weight: 600;
}
.expert-actions { display: flex; gap: 10px; }
.btn-sm {
  flex: 1;
  text-align: center;
  padding: 8px 12px;
  border-radius: 8px;
  font-size: 0.82rem;
  font-weight: 600;
  transition: all var(--transition);
}
.btn-sm-primary { background: var(--primary); color: #fff; }
.btn-sm-primary:hover { background: var(--primary-dark); color: #fff; }
.btn-sm-outline { border: 1.5px solid var(--primary); color: var(--primary); }
.btn-sm-outline:hover { background: var(--primary); color: #fff; }

/* ===== 评价区 ===== */
.review-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 22px;
}
.review-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 22px;
  box-shadow: var(--shadow);
  border-left: 4px solid var(--primary);
  transition: all var(--transition);
}
.review-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-hover); }
.review-stars { color: #FFB800; font-size: 1rem; margin-bottom: 10px; letter-spacing: 2px; }
.review-text { font-size: 0.9rem; 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(--secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 700;
  font-size: 0.9rem;
  flex-shrink: 0;
}
.review-name { font-weight: 700; font-size: 0.9rem; color: var(--secondary); }
.review-date { font-size: 0.78rem; color: var(--text-light); }

/* ===== FAQ ===== */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  border-bottom: 1px solid var(--border);
  overflow: hidden;
}
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 0;
  cursor: pointer;
  font-weight: 600;
  font-size: 1rem;
  color: var(--secondary);
  transition: color var(--transition);
  gap: 12px;
}
.faq-question:hover { color: var(--primary); }
.faq-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(255,107,0,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all var(--transition);
  font-size: 1.1rem;
  color: var(--primary);
}
.faq-item.open .faq-icon { background: var(--primary); color: #fff; transform: rotate(45deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s;
  font-size: 0.92rem;
  color: var(--text-light);
  line-height: 1.8;
}
.faq-item.open .faq-answer { max-height: 300px; padding-bottom: 18px; }

/* ===== 合作品牌 ===== */
.partner-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
  align-items: center;
}
.partner-item {
  background: #fff;
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 28px;
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--text-light);
  transition: all var(--transition);
  cursor: pointer;
}
.partner-item:hover { border-color: var(--primary); color: var(--primary); transform: translateY(-2px); box-shadow: var(--shadow); }

/* ===== 社交分享 ===== */
.share-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
.share-label { font-size: 0.9rem; color: var(--text-light); font-weight: 600; }
.share-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  border: none;
}
.share-wechat { background: #07C160; color: #fff; }
.share-weibo { background: #E6162D; color: #fff; }
.share-douyin { background: #000; color: #fff; }
.share-bilibili { background: #00A1D6; color: #fff; }
.share-btn:hover { opacity: 0.85; transform: translateY(-1px); }

/* ===== 联系我们 ===== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}
.contact-info h3 { font-size: 1.4rem; font-weight: 800; margin-bottom: 20px; color: var(--secondary); }
.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 18px;
}
.contact-icon {
  width: 42px;
  height: 42px;
  background: rgba(255,107,0,0.1);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 1.1rem;
}
.contact-label { font-size: 0.82rem; color: var(--text-light); margin-bottom: 2px; }
.contact-value { font-size: 0.97rem; font-weight: 600; color: var(--secondary); }
.qrcode-row { display: flex; gap: 24px; flex-wrap: wrap; }
.qrcode-item { text-align: center; }
.qrcode-item img { width: 120px; height: 120px; object-fit: cover; border-radius: 10px; border: 2px solid var(--border); margin-bottom: 8px; }
.qrcode-item p { font-size: 0.82rem; color: var(--text-light); }

/* ===== 页脚 ===== */
.site-footer {
  background: var(--secondary);
  color: rgba(255,255,255,0.7);
  padding: 56px 0 0;
}
.footer-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
}
.footer-brand .logo-wrap { display: flex; align-items: center; gap: 10px; margin-bottom: 16px; }
.footer-brand .logo-wrap img { width: 40px; height: 40px; object-fit: contain; border-radius: 8px; }
.footer-brand .logo-wrap span { font-size: 1.2rem; font-weight: 800; color: #fff; }
.footer-brand p { font-size: 0.88rem; line-height: 1.7; max-width: 280px; }
.footer-social { display: flex; gap: 10px; margin-top: 16px; }
.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: 0.9rem;
  transition: background var(--transition);
  cursor: pointer;
  color: rgba(255,255,255,0.7);
}
.social-icon:hover { background: var(--primary); color: #fff; }
.footer-col h4 { font-size: 0.95rem; font-weight: 700; color: #fff; margin-bottom: 16px; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { font-size: 0.87rem; color: rgba(255,255,255,0.6); transition: color var(--transition); }
.footer-col ul li a:hover { color: var(--primary); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 18px 24px;
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 0.82rem;
}
.footer-bottom-full {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 18px 24px;
  text-align: center;
  font-size: 0.82rem;
}
.footer-links { display: flex; gap: 16px; flex-wrap: wrap; }
.footer-links a { color: rgba(255,255,255,0.5); font-size: 0.82rem; }
.footer-links a:hover { color: var(--primary); }

/* ===== 区块背景 ===== */
.section { padding: 72px 0; }
.section-alt { background: var(--bg-light); }
.section-dark { background: var(--secondary); color: #fff; }
.section-dark .section-title { color: #fff; }
.section-dark .section-desc { color: rgba(255,255,255,0.65); }

/* ===== AI赋能区 ===== */
.ai-section { background: linear-gradient(135deg, #1A1A2E 0%, #16213E 50%, #0F3460 100%); }
.ai-card {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: all var(--transition);
}
.ai-card:hover { background: rgba(255,107,0,0.12); border-color: var(--primary); transform: translateY(-4px); }
.ai-card h3 { color: #fff; font-size: 1.05rem; font-weight: 700; margin-bottom: 10px; }
.ai-card p { color: rgba(255,255,255,0.65); font-size: 0.88rem; line-height: 1.7; }
.ai-icon { font-size: 2rem; margin-bottom: 14px; }

/* ===== 加入社区引导 ===== */
.join-steps { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 24px; }
.join-step { text-align: center; padding: 24px 16px; }
.step-num {
  width: 48px;
  height: 48px;
  background: var(--primary);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  font-weight: 900;
  margin: 0 auto 14px;
}
.join-step h4 { font-size: 0.97rem; font-weight: 700; margin-bottom: 8px; color: var(--secondary); }
.join-step p { font-size: 0.85rem; color: var(--text-light); }

/* ===== 标签云 ===== */
.tag-cloud { display: flex; flex-wrap: wrap; gap: 10px; }
.tag-item {
  background: rgba(255,107,0,0.08);
  color: var(--primary);
  border: 1px solid rgba(255,107,0,0.2);
  padding: 5px 14px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
}
.tag-item:hover { background: var(--primary); color: #fff; border-color: var(--primary); }

/* ===== 滚动公告 ===== */
.ticker-wrap {
  background: var(--primary);
  overflow: hidden;
  padding: 10px 0;
}
.ticker-inner {
  display: flex;
  gap: 60px;
  animation: ticker 28s linear infinite;
  white-space: nowrap;
}
.ticker-inner span { color: #fff; font-size: 0.88rem; font-weight: 600; }
@keyframes ticker { from { transform: translateX(0); } to { transform: translateX(-50%); } }

/* ===== 移动端适配 ===== */
@media (max-width: 1024px) {
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .hero-title { font-size: 2rem; }
  .section-title { font-size: 1.5rem; }
  .main-nav { display: none; flex-direction: column; position: absolute; top: 68px; left: 0; right: 0; background: #fff; padding: 16px; box-shadow: 0 8px 24px rgba(0,0,0,0.1); z-index: 999; }
  .main-nav.open { display: flex; }
  .main-nav a { padding: 12px 16px; border-radius: 8px; }
  .hamburger { display: flex; }
  .header-actions .btn-join { display: none; }
  .footer-inner { grid-template-columns: 1fr; gap: 28px; }
  .hero-stats { gap: 20px; }
  .video-grid { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }
  .section { padding: 48px 0; }
  .footer-bottom { flex-direction: column; text-align: center; }
}

@media (max-width: 480px) {
  .hero-title { font-size: 1.6rem; }
  .hero-actions { flex-direction: column; }
  .btn-primary, .btn-outline { width: 100%; justify-content: center; }
  .container { padding: 0 16px; }
  .video-grid { grid-template-columns: 1fr; }
  .expert-grid { grid-template-columns: 1fr; }
  .review-grid { grid-template-columns: 1fr; }
}

/* ===== 干扰标签隐藏 ===== */
.tujne5i { display: none !important; visibility: hidden !important; }

/* ===== 加载动画 ===== */
.lazy-img { opacity: 0; transition: opacity 0.4s; }
.lazy-img.loaded { opacity: 1; }

/* ===== 视频模态框 ===== */
.video-modal {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.88);
  z-index: 9999;
  align-items: center;
  justify-content: center;
}
.video-modal.active { display: flex; }
.modal-inner {
  background: #000;
  border-radius: 12px;
  overflow: hidden;
  max-width: 860px;
  width: 90%;
  position: relative;
}
.modal-close {
  position: absolute;
  top: 12px;
  right: 12px;
  background: rgba(255,255,255,0.15);
  border: none;
  color: #fff;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  font-size: 1.2rem;
  cursor: pointer;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: center;
}
.modal-video {
  width: 100%;
  aspect-ratio: 16/9;
  background: #111;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.5);
  font-size: 0.9rem;
}

/* ===== 内页横幅 ===== */
.page-banner {
  background: linear-gradient(135deg, var(--secondary) 0%, #0F3460 100%);
  padding: 56px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.page-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('../images/hero-banner.jpg') center/cover;
  opacity: 0.12;
}
.page-banner-content { position: relative; z-index: 2; }
.page-banner h1 { font-size: 2.2rem; font-weight: 900; color: #fff; margin-bottom: 10px; }
.page-banner p { font-size: 1rem; color: rgba(255,255,255,0.7); }

/* ===== 侧边栏 ===== */
.content-layout { display: grid; grid-template-columns: 1fr 300px; gap: 32px; }
.sidebar { display: flex; flex-direction: column; gap: 24px; }
.sidebar-card { background: #fff; border-radius: var(--radius-lg); padding: 22px; box-shadow: var(--shadow); }
.sidebar-card h4 { font-size: 1rem; font-weight: 700; color: var(--secondary); margin-bottom: 14px; padding-bottom: 10px; border-bottom: 2px solid var(--primary); }
.sidebar-list li { padding: 8px 0; border-bottom: 1px solid var(--border); font-size: 0.88rem; }
.sidebar-list li:last-child { border-bottom: none; }
.sidebar-list li a { color: var(--text-main); display: flex; justify-content: space-between; align-items: center; }
.sidebar-list li a:hover { color: var(--primary); }
.sidebar-list .count { font-size: 0.78rem; color: var(--text-light); background: var(--bg-light); padding: 2px 8px; border-radius: 10px; }

@media (max-width: 900px) {
  .content-layout { grid-template-columns: 1fr; }
  .sidebar { display: none; }
}