/* 糖心植物视频社区 - 主样式文件 | gs7hlb.cn */
:root {
  --primary: #1a6b3a;
  --primary-light: #2d9e5a;
  --primary-dark: #0f4224;
  --accent: #f5a623;
  --accent2: #e8f5e9;
  --text: #1a1a1a;
  --text-muted: #666;
  --bg: #fff;
  --bg-alt: #f7faf8;
  --border: #d4e8d8;
  --shadow: 0 4px 24px rgba(26,107,58,0.10);
  --radius: 12px;
  --radius-sm: 6px;
  --font: '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);
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  overflow-x: hidden;
}

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

/* ===== 顶部公告栏 ===== */
.top-bar {
  background: var(--primary);
  color: #fff;
  font-size: 13px;
  padding: 6px 0;
  text-align: center;
  letter-spacing: 0.5px;
}
.top-bar a { color: #b8f0c8; text-decoration: none; }

/* ===== 导航 ===== */
.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 20px;
  display: flex;
  align-items: center;
  height: 70px;
  gap: 24px;
}
.site-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  flex-shrink: 0;
}
.site-logo img {
  height: 44px;
  width: auto;
}
.site-logo .logo-text {
  font-size: 22px;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: 1px;
}
.site-logo .logo-sub {
  font-size: 11px;
  color: var(--text-muted);
  display: block;
  line-height: 1;
}
.main-nav {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 4px;
}
.main-nav a {
  color: var(--text);
  text-decoration: none;
  font-size: 15px;
  font-weight: 500;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  transition: all 0.2s;
  white-space: nowrap;
}
.main-nav a:hover, .main-nav a.active {
  color: var(--primary);
  background: var(--accent2);
}
.header-search {
  display: flex;
  align-items: center;
  background: #f5f5f5;
  border-radius: 24px;
  padding: 6px 16px;
  gap: 8px;
  border: 1px solid var(--border);
}
.header-search input {
  border: none;
  background: transparent;
  outline: none;
  font-size: 14px;
  width: 160px;
  color: var(--text);
}
.header-search button {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--primary);
  font-size: 16px;
  padding: 0;
}
.nav-btn {
  background: var(--primary);
  color: #fff !important;
  border-radius: 24px !important;
  padding: 8px 20px !important;
}
.nav-btn:hover { background: var(--primary-light) !important; color: #fff !important; }
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
}
.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all 0.3s;
}

/* ===== 搜索框 ===== */
.search-bar-section {
  background: var(--accent2);
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
}
.search-bar-inner {
  max-width: 700px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  gap: 0;
}
.search-bar-inner input {
  flex: 1;
  padding: 12px 20px;
  border: 2px solid var(--primary);
  border-right: none;
  border-radius: var(--radius-sm) 0 0 var(--radius-sm);
  font-size: 15px;
  outline: none;
  background: #fff;
}
.search-bar-inner button {
  background: var(--primary);
  color: #fff;
  border: 2px solid var(--primary);
  border-left: none;
  padding: 12px 28px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 15px;
  cursor: pointer;
  font-weight: 600;
  transition: background 0.2s;
}
.search-bar-inner button:hover { background: var(--primary-light); }
.search-hot-tags {
  max-width: 700px;
  margin: 8px auto 0;
  padding: 0 20px;
  font-size: 13px;
  color: var(--text-muted);
}
.search-hot-tags a {
  color: var(--primary);
  text-decoration: none;
  margin: 0 6px;
  font-size: 13px;
}
.search-hot-tags a:hover { text-decoration: underline; }

/* ===== Banner ===== */
.hero-banner {
  position: relative;
  min-height: 520px;
  background: linear-gradient(135deg, #0f4224 0%, #1a6b3a 50%, #2d9e5a 100%);
  overflow: hidden;
  display: flex;
  align-items: center;
}
.hero-banner .banner-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.45;
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 1280px;
  margin: 0 auto;
  padding: 60px 20px;
  color: #fff;
}
.hero-badge {
  display: inline-block;
  background: rgba(255,255,255,0.18);
  border: 1px solid rgba(255,255,255,0.35);
  color: #fff;
  font-size: 13px;
  padding: 4px 14px;
  border-radius: 20px;
  margin-bottom: 18px;
  backdrop-filter: blur(4px);
}
.hero-content h1 {
  font-size: clamp(28px, 5vw, 52px);
  font-weight: 900;
  line-height: 1.2;
  margin-bottom: 18px;
  text-shadow: 0 2px 8px rgba(0,0,0,0.3);
}
.hero-content h1 em {
  font-style: normal;
  color: #7dffb0;
}
.hero-content p {
  font-size: clamp(15px, 2vw, 18px);
  opacity: 0.92;
  max-width: 600px;
  margin-bottom: 32px;
  line-height: 1.8;
}
.hero-btns {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
  border: none;
  padding: 14px 32px;
  border-radius: 30px;
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
  transition: all 0.2s;
  box-shadow: 0 4px 16px rgba(245,166,35,0.4);
}
.btn-primary:hover { background: #e09510; transform: translateY(-2px); }
.btn-outline {
  background: transparent;
  color: #fff;
  border: 2px solid rgba(255,255,255,0.7);
  padding: 12px 30px;
  border-radius: 30px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
  transition: all 0.2s;
}
.btn-outline:hover { background: rgba(255,255,255,0.15); }
.hero-stats {
  display: flex;
  gap: 40px;
  margin-top: 40px;
  flex-wrap: wrap;
}
.hero-stat { text-align: left; }
.hero-stat .num {
  font-size: 28px;
  font-weight: 900;
  color: #7dffb0;
  display: block;
}
.hero-stat .label { font-size: 13px; opacity: 0.8; }

/* ===== 通用区块 ===== */
.section {
  padding: 64px 0;
}
.section-alt { background: var(--bg-alt); }
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 20px;
}
.section-header {
  text-align: center;
  margin-bottom: 48px;
}
.section-tag {
  display: inline-block;
  background: var(--accent2);
  color: var(--primary);
  font-size: 13px;
  font-weight: 700;
  padding: 4px 14px;
  border-radius: 20px;
  margin-bottom: 12px;
  letter-spacing: 1px;
}
.section-header h2 {
  font-size: clamp(22px, 3.5vw, 36px);
  font-weight: 800;
  color: var(--text);
  margin-bottom: 12px;
}
.section-header p {
  color: var(--text-muted);
  font-size: 16px;
  max-width: 560px;
  margin: 0 auto;
}
.section-header h2 .brand { color: var(--primary); }

/* ===== 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);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform 0.25s, box-shadow 0.25s;
  cursor: pointer;
}
.video-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 40px rgba(26,107,58,0.18);
}
.video-thumb {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16/9;
  background: #1a1a1a;
}
.video-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s;
}
.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(0,0,0,0.35);
  opacity: 0;
  transition: opacity 0.25s;
}
.video-card:hover .play-btn { opacity: 1; }
.play-btn svg {
  width: 56px;
  height: 56px;
  filter: drop-shadow(0 2px 8px rgba(0,0,0,0.5));
}
.video-duration {
  position: absolute;
  bottom: 8px;
  right: 10px;
  background: rgba(0,0,0,0.72);
  color: #fff;
  font-size: 12px;
  padding: 2px 8px;
  border-radius: 4px;
}
.video-tag {
  position: absolute;
  top: 10px;
  left: 10px;
  background: var(--primary);
  color: #fff;
  font-size: 11px;
  padding: 2px 10px;
  border-radius: 4px;
  font-weight: 600;
}
.video-info {
  padding: 16px;
}
.video-info h3 {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 8px;
  line-height: 1.4;
  color: var(--text);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.video-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  color: var(--text-muted);
}
.video-meta .views::before { content: '▶ '; }
.video-meta .likes::before { content: '♥ '; color: #e74c3c; }
.video-meta .comments::before { content: '💬 '; }
.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%;
  background: var(--accent2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  color: var(--primary);
  font-weight: 700;
  flex-shrink: 0;
}
.author-name { font-size: 13px; color: var(--primary); font-weight: 600; }

/* ===== 功能模块卡片 ===== */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 24px;
}
.feature-card {
  background: #fff;
  border-radius: var(--radius);
  padding: 32px 24px;
  text-align: center;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  transition: transform 0.2s, box-shadow 0.2s;
}
.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 32px rgba(26,107,58,0.14);
}
.feature-icon {
  width: 64px;
  height: 64px;
  background: var(--accent2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 18px;
  font-size: 28px;
}
.feature-card h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text);
}
.feature-card p { font-size: 14px; color: var(--text-muted); 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);
  overflow: hidden;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  transition: transform 0.2s;
}
.expert-card:hover { transform: translateY(-4px); }
.expert-photo {
  width: 100%;
  aspect-ratio: 3/4;
  object-fit: cover;
  object-position: top;
}
.expert-info { padding: 20px; }
.expert-info h3 { font-size: 18px; font-weight: 800; margin-bottom: 4px; }
.expert-title { font-size: 13px; color: var(--primary); font-weight: 600; margin-bottom: 10px; }
.expert-desc { font-size: 13px; color: var(--text-muted); margin-bottom: 14px; line-height: 1.6; }
.expert-awards { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 14px; }
.award-tag {
  background: #fff8e1;
  color: #b8860b;
  font-size: 11px;
  padding: 3px 10px;
  border-radius: 20px;
  border: 1px solid #f0d060;
}
.expert-btns { display: flex; gap: 10px; }
.btn-sm {
  flex: 1;
  text-align: center;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.2s;
}
.btn-sm-primary {
  background: var(--primary);
  color: #fff;
}
.btn-sm-primary:hover { background: var(--primary-light); }
.btn-sm-outline {
  border: 1px solid var(--primary);
  color: var(--primary);
}
.btn-sm-outline:hover { background: var(--accent2); }

/* ===== 评价 ===== */
.review-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}
.review-card {
  background: #fff;
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  position: relative;
}
.review-card::before {
  content: '\201C';
  font-size: 60px;
  color: var(--accent2);
  position: absolute;
  top: 10px;
  left: 18px;
  line-height: 1;
  font-family: Georgia, serif;
}
.review-stars { color: var(--accent); font-size: 16px; margin-bottom: 12px; }
.review-text { font-size: 14px; color: var(--text); line-height: 1.7; margin-bottom: 16px; padding-top: 20px; }
.reviewer { display: flex; align-items: center; gap: 12px; }
.reviewer-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--accent2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 700;
  color: var(--primary);
  flex-shrink: 0;
}
.reviewer-name { font-size: 14px; font-weight: 700; }
.reviewer-info { font-size: 12px; color: var(--text-muted); }

/* ===== FAQ ===== */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
  overflow: hidden;
}
.faq-question {
  padding: 18px 24px;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: #fff;
  transition: background 0.2s;
  user-select: none;
}
.faq-question:hover { background: var(--accent2); }
.faq-question .icon {
  font-size: 20px;
  color: var(--primary);
  transition: transform 0.3s;
  flex-shrink: 0;
}
.faq-item.open .faq-question .icon { transform: rotate(45deg); }
.faq-answer {
  padding: 0 24px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.2s;
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.8;
  background: var(--bg-alt);
}
.faq-item.open .faq-answer {
  max-height: 300px;
  padding: 16px 24px;
}

/* ===== 合作品牌 ===== */
.partner-logos {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  justify-content: center;
  align-items: center;
}
.partner-logo {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 16px 28px;
  font-size: 15px;
  font-weight: 700;
  color: var(--primary);
  text-align: center;
  min-width: 120px;
  transition: box-shadow 0.2s, transform 0.2s;
}
.partner-logo:hover {
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}

/* ===== 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: 800; margin-bottom: 20px; }
.contact-item {
  display: flex;
  gap: 14px;
  margin-bottom: 18px;
  align-items: flex-start;
}
.contact-icon {
  width: 40px;
  height: 40px;
  background: var(--accent2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}
.contact-detail { font-size: 14px; }
.contact-detail strong { display: block; font-size: 15px; margin-bottom: 2px; }
.qr-group { display: flex; gap: 20px; flex-wrap: wrap; }
.qr-item { text-align: center; }
.qr-item img {
  width: 120px;
  height: 120px;
  border-radius: var(--radius-sm);
  border: 2px solid var(--border);
}
.qr-item p { font-size: 13px; color: var(--text-muted); margin-top: 8px; }
.store-photo {
  width: 100%;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  object-fit: cover;
  max-height: 300px;
}

/* ===== 社交分享 ===== */
.share-bar {
  background: var(--primary);
  padding: 20px 0;
}
.share-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}
.share-label { color: #fff; font-size: 15px; font-weight: 600; }
.share-btns { display: flex; gap: 10px; flex-wrap: wrap; }
.share-btn {
  padding: 8px 18px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: opacity 0.2s, transform 0.2s;
}
.share-btn:hover { opacity: 0.85; transform: translateY(-1px); }
.share-wechat { background: #07c160; color: #fff; }
.share-weibo { background: #e6162d; color: #fff; }
.share-douyin { background: #010101; color: #fff; }
.share-bilibili { background: #00a1d6; color: #fff; }
.share-qq { background: #12b7f5; color: #fff; }

/* ===== 底部 ===== */
.site-footer {
  background: #0f2318;
  color: #ccc;
  padding: 56px 0 24px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-brand .logo-text { color: #7dffb0; font-size: 24px; font-weight: 900; }
.footer-brand p { font-size: 14px; margin-top: 12px; line-height: 1.7; color: #aaa; max-width: 280px; }
.footer-col h4 { color: #fff; font-size: 15px; font-weight: 700; margin-bottom: 16px; }
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { color: #aaa; text-decoration: none; font-size: 14px; transition: color 0.2s; }
.footer-col ul li a:hover { color: #7dffb0; }
.footer-bottom {
  border-top: 1px solid #1e3a28;
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  color: #777;
}
.footer-bottom a { color: #aaa; text-decoration: none; }
.footer-bottom a:hover { color: #7dffb0; }
.footer-qr { display: flex; gap: 16px; }
.footer-qr-item { text-align: center; }
.footer-qr-item img {
  width: 80px;
  height: 80px;
  border-radius: 6px;
  border: 1px solid #2a4a35;
}
.footer-qr-item p { font-size: 11px; color: #777; margin-top: 4px; }

/* ===== AI赋能区块 ===== */
.ai-section {
  background: linear-gradient(135deg, #0f4224, #1a6b3a);
  color: #fff;
  padding: 64px 0;
}
.ai-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.ai-card {
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: var(--radius);
  padding: 28px;
  backdrop-filter: blur(8px);
  transition: background 0.2s;
}
.ai-card:hover { background: rgba(255,255,255,0.14); }
.ai-card h3 { font-size: 17px; font-weight: 700; margin-bottom: 10px; color: #7dffb0; }
.ai-card p { font-size: 14px; opacity: 0.85; line-height: 1.7; }
.ai-icon { font-size: 32px; margin-bottom: 14px; }

/* ===== 标签云 ===== */
.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  padding: 24px 0;
}
.tag-cloud a {
  background: var(--accent2);
  color: var(--primary);
  text-decoration: none;
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 14px;
  border: 1px solid var(--border);
  transition: all 0.2s;
}
.tag-cloud a:hover {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

/* ===== 面包屑 ===== */
.breadcrumb {
  background: var(--bg-alt);
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
}
.breadcrumb-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 20px;
  font-size: 13px;
  color: var(--text-muted);
}
.breadcrumb-inner a { color: var(--primary); text-decoration: none; }
.breadcrumb-inner a:hover { text-decoration: underline; }
.breadcrumb-inner span { margin: 0 6px; }

/* ===== 内页Banner ===== */
.inner-banner {
  background: linear-gradient(135deg, #0f4224, #2d9e5a);
  color: #fff;
  padding: 48px 0;
  text-align: center;
}
.inner-banner h1 { font-size: clamp(24px, 4vw, 40px); font-weight: 900; margin-bottom: 10px; }
.inner-banner p { font-size: 16px; opacity: 0.85; }

/* ===== 加入社区步骤 ===== */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 24px;
  counter-reset: step;
}
.step-card {
  background: #fff;
  border-radius: var(--radius);
  padding: 28px 20px;
  text-align: center;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  position: relative;
  counter-increment: step;
}
.step-card::before {
  content: counter(step);
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  width: 28px;
  height: 28px;
  background: var(--primary);
  color: #fff;
  border-radius: 50%;
  font-size: 14px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
}
.step-icon { font-size: 36px; margin-bottom: 14px; }
.step-card h3 { font-size: 16px; font-weight: 700; margin-bottom: 8px; }
.step-card p { font-size: 13px; color: var(--text-muted); }

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .ai-grid { grid-template-columns: 1fr 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .main-nav { display: none; }
  .main-nav.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: #fff;
    padding: 20px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.12);
    z-index: 999;
    gap: 4px;
  }
  .hamburger { display: flex; }
  .header-search { display: none; }
  .hero-stats { gap: 20px; }
  .footer-grid { grid-template-columns: 1fr; }
  .ai-grid { grid-template-columns: 1fr; }
  .video-grid { grid-template-columns: 1fr 1fr; }
  .expert-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 480px) {
  .video-grid { grid-template-columns: 1fr; }
  .expert-grid { grid-template-columns: 1fr; }
  .review-grid { grid-template-columns: 1fr; }
  .hero-btns { flex-direction: column; }
  .footer-bottom { flex-direction: column; text-align: center; }
}

/* ===== 懒加载 ===== */
img[data-src] { opacity: 1; transition: opacity 0.4s; }
img.loaded { opacity: 1; }

/* ===== 滚动动画 ===== */
.fade-in { opacity: 1; transform: none; transition: opacity 0.5s, transform 0.5s; }
.fade-in.visible { opacity: 1; transform: none; }

/* ===== 视频模态框 ===== */
.video-modal {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.85);
  z-index: 9999;
  align-items: center;
  justify-content: center;
}
.video-modal.open { display: flex; }
.modal-inner {
  background: #000;
  border-radius: var(--radius);
  overflow: hidden;
  max-width: 800px;
  width: 90%;
  position: relative;
}
.modal-close {
  position: absolute;
  top: 12px;
  right: 14px;
  color: #fff;
  font-size: 28px;
  cursor: pointer;
  z-index: 10;
  background: rgba(0,0,0,0.5);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}
.modal-video {
  width: 100%;
  aspect-ratio: 16/9;
  background: #111;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #aaa;
  font-size: 16px;
}

/* ===== 数字统计 ===== */
.stats-bar {
  background: var(--primary);
  padding: 32px 0;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  text-align: center;
}
.stat-item .num {
  font-size: 36px;
  font-weight: 900;
  color: #7dffb0;
  display: block;
}
.stat-item .label { font-size: 14px; color: rgba(255,255,255,0.8); }
@media (max-width: 600px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ===== 关于页面补充 ===== */
.about-intro { display: flex; gap: 48px; align-items: center; flex-wrap: wrap; }
.about-text { flex: 1; min-width: 280px; }
.about-text h2 { font-size: 28px; font-weight: 800; margin-bottom: 16px; }
.about-text p { font-size: 15px; color: var(--text-muted); line-height: 1.8; margin-bottom: 14px; }
.about-stats { display: flex; gap: 20px; flex-wrap: wrap; margin-top: 28px; }
.about-stats .stat-item { background: var(--bg-alt); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 16px 20px; text-align: center; }
.about-stats .stat-num { font-size: 26px; font-weight: 900; color: var(--primary); display: block; }
.about-stats .stat-label { font-size: 12px; color: var(--text-muted); }
.about-img { width: 400px; flex-shrink: 0; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
.about-img img { width: 100%; height: 100%; object-fit: cover; display: block; }

/* ===== 时间线 ===== */
.timeline { max-width: 680px; margin: 0 auto; position: relative; }
.timeline::before { content: ''; position: absolute; left: 72px; top: 0; bottom: 0; width: 2px; background: linear-gradient(to bottom, var(--primary), var(--primary-light)); }
.timeline-item { display: flex; gap: 28px; margin-bottom: 28px; position: relative; }
.timeline-year { width: 72px; flex-shrink: 0; font-size: 15px; font-weight: 800; color: var(--primary); text-align: right; padding-top: 6px; }
.timeline-content { background: #fff; border-radius: var(--radius-sm); padding: 16px 20px; box-shadow: var(--shadow); flex: 1; position: relative; }
.timeline-content::before { content: ''; position: absolute; left: -22px; top: 14px; width: 12px; height: 12px; background: var(--primary); border-radius: 50%; border: 3px solid #fff; box-shadow: 0 0 0 2px var(--primary); }
.timeline-content h4 { font-size: 15px; font-weight: 700; margin-bottom: 6px; }
.timeline-content p { font-size: 13px; color: var(--text-muted); line-height: 1.6; }

/* ===== 使命愿景 ===== */
.mvv-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 24px; }
.mvv-card { background: #fff; border-radius: var(--radius); padding: 28px 24px; text-align: center; box-shadow: var(--shadow); border-top: 4px solid var(--primary); transition: transform 0.2s; }
.mvv-card:hover { transform: translateY(-4px); }
.mvv-icon { font-size: 38px; margin-bottom: 14px; }
.mvv-card h3 { font-size: 17px; font-weight: 700; margin-bottom: 10px; }
.mvv-card p { font-size: 14px; color: var(--text-muted); line-height: 1.7; }

/* ===== 联系页面补充 ===== */
.contact-info h2, .contact-form h2 { font-size: 22px; font-weight: 800; margin-bottom: 20px; }
.contact-item { display: flex; gap: 14px; margin-bottom: 18px; align-items: flex-start; }
.contact-item h4 { font-size: 14px; font-weight: 700; margin-bottom: 4px; }
.contact-item p { font-size: 14px; color: var(--text-muted); }
.contact-qr { display: flex; gap: 20px; flex-wrap: wrap; margin-top: 20px; }
.contact-qr-item { text-align: center; }
.contact-qr-item img { width: 100px; height: 100px; border-radius: 8px; border: 2px solid var(--border); }
.contact-qr-item p { font-size: 12px; color: var(--text-muted); margin-top: 6px; }
.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-size: 14px; font-weight: 600; margin-bottom: 6px; }
.form-group input, .form-group select, .form-group textarea {
  width: 100%; padding: 11px 14px; border: 1.5px solid var(--border); border-radius: var(--radius-sm);
  font-size: 14px; outline: none; transition: border-color 0.2s; background: #fff; font-family: inherit;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { border-color: var(--primary); }
.btn-submit { width: 100%; padding: 13px; background: var(--primary); color: #fff; border: none; border-radius: var(--radius-sm); font-size: 16px; font-weight: 700; cursor: pointer; transition: background 0.2s; }
.btn-submit:hover { background: var(--primary-light); }

/* ===== 合作卡片 ===== */
.partner-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 20px; }
.partner-card { background: #fff; border-radius: var(--radius); padding: 26px 22px; text-align: center; box-shadow: var(--shadow); transition: transform 0.2s; }
.partner-card:hover { transform: translateY(-4px); }
.partner-icon { font-size: 36px; margin-bottom: 14px; }
.partner-card h3 { font-size: 15px; font-weight: 700; margin-bottom: 8px; }
.partner-card p { font-size: 13px; color: var(--text-muted); line-height: 1.6; }

/* ===== 专家卡片补充 ===== */
.expert-card { display: flex; flex-direction: column; }
.expert-img { width: 100%; height: 200px; overflow: hidden; }
.expert-img img { width: 100%; height: 100%; object-fit: cover; object-position: top; }
.expert-info { padding: 18px; flex: 1; }
.expert-info h3 { font-size: 17px; font-weight: 800; margin-bottom: 4px; }
.expert-title { font-size: 12px; color: var(--primary); font-weight: 600; margin-bottom: 10px; }
.expert-info p { font-size: 13px; color: var(--text-muted); line-height: 1.6; margin-bottom: 12px; }
.expert-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 12px; }
.expert-tag { background: rgba(26,107,58,0.08); color: var(--primary); padding: 3px 10px; border-radius: 12px; font-size: 11px; font-weight: 600; }
.expert-stats { display: flex; align-items: center; justify-content: space-between; font-size: 12px; color: var(--text-muted); }
.btn-small { background: var(--primary); color: #fff; padding: 4px 12px; border-radius: 12px; font-size: 12px; font-weight: 600; text-decoration: none; }
.btn-small:hover { background: var(--primary-light); color: #fff; }

/* ===== AI功能卡片补充 ===== */
.ai-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 24px; }
.ai-card { background: #fff; border-radius: var(--radius); padding: 26px; box-shadow: var(--shadow); border: 1px solid var(--border); transition: transform 0.2s, border-color 0.2s; }
.ai-card:hover { transform: translateY(-4px); border-color: var(--primary); }
.ai-icon { font-size: 34px; margin-bottom: 14px; }
.ai-card h3 { font-size: 17px; font-weight: 700; margin-bottom: 10px; color: var(--text); }
.ai-card p { font-size: 14px; color: var(--text-muted); line-height: 1.7; margin-bottom: 14px; }
.ai-stats { display: flex; gap: 12px; margin-bottom: 18px; flex-wrap: wrap; }
.ai-stats span { background: rgba(26,107,58,0.08); color: var(--primary); padding: 3px 10px; border-radius: 12px; font-size: 12px; font-weight: 600; }
.btn-ai { display: inline-block; background: var(--primary); color: #fff; padding: 9px 18px; border-radius: 18px; font-size: 13px; font-weight: 600; text-decoration: none; transition: background 0.2s; }
.btn-ai:hover { background: var(--primary-light); color: #fff; }

@media (max-width: 768px) {
  .about-intro { flex-direction: column; }
  .about-img { width: 100%; }
  .timeline::before { left: 56px; }
  .timeline-year { width: 56px; font-size: 13px; }
  .contact-grid { grid-template-columns: 1fr; }
}

/* ===== 社区功能专区 ===== */
.community-zone-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 32px;
}
.czone-card {
  display: block;
  background: #fff;
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  text-decoration: none;
  color: var(--text);
  transition: all 0.25s;
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
}
.czone-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--primary-light));
  transform: scaleX(0);
  transition: transform 0.3s;
}
.czone-card:hover::before { transform: scaleX(1); }
.czone-card:hover {
  border-color: var(--primary-light);
  box-shadow: 0 8px 32px rgba(26,107,58,0.15);
  transform: translateY(-4px);
}
.czone-icon {
  font-size: 36px;
  margin-bottom: 14px;
  display: block;
}
.czone-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--primary-dark);
  margin-bottom: 10px;
}
.czone-card p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 16px;
}
.czone-count {
  display: inline-block;
  background: var(--accent2);
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 20px;
}

/* ===== 合作页面 ===== */
.partner-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 32px;
}
.partner-card {
  background: #fff;
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  box-shadow: var(--shadow);
  transition: all 0.25s;
}
.partner-card:hover {
  border-color: var(--primary-light);
  box-shadow: 0 8px 32px rgba(26,107,58,0.15);
  transform: translateY(-4px);
}
.partner-icon {
  font-size: 36px;
  margin-bottom: 14px;
}
.partner-card h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--primary-dark);
  margin-bottom: 10px;
}
.partner-card p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
}
.partner-type-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 32px;
}
.partner-type-card {
  background: #fff;
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  box-shadow: var(--shadow);
}
.partner-type-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--primary-dark);
  margin-bottom: 12px;
}
.partner-type-card p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 16px;
}
.partner-type-card ul {
  list-style: none;
  padding: 0;
  margin: 0 0 20px 0;
}
.partner-type-card ul li {
  font-size: 14px;
  color: var(--text);
  padding: 4px 0;
  padding-left: 18px;
  position: relative;
}
.partner-type-card ul li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--primary);
  font-weight: 700;
}
.btn-sm {
  display: inline-block;
  padding: 8px 20px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.2s;
}
.btn-sm-primary {
  background: var(--primary);
  color: #fff;
}
.btn-sm-primary:hover {
  background: var(--primary-dark);
}
.partner-logos {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 16px;
  margin-top: 32px;
}
.partner-logo {
  background: #fff;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 16px 12px;
  text-align: center;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
  transition: all 0.2s;
}
.partner-logo:hover {
  border-color: var(--primary);
  color: var(--primary);
}

/* ===== 流程步骤 ===== */
.process-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 32px;
}
.process-step {
  background: #fff;
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  box-shadow: var(--shadow);
  position: relative;
}
.step-num {
  font-size: 36px;
  font-weight: 900;
  color: var(--accent2);
  line-height: 1;
  margin-bottom: 12px;
  -webkit-text-stroke: 2px var(--primary-light);
}
.process-step h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--primary-dark);
  margin-bottom: 8px;
}
.process-step p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ===== FAQ页面 ===== */
.faq-cats {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 40px;
  justify-content: center;
}
.faq-cat-btn {
  display: inline-block;
  padding: 8px 20px;
  background: var(--accent2);
  color: var(--primary);
  border-radius: 20px;
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.2s;
}
.faq-cat-btn:hover {
  background: var(--primary);
  color: #fff;
}
.faq-section-title {
  margin: 40px 0 20px;
}
.faq-section-title h2 {
  font-size: 22px;
  font-weight: 700;
  color: var(--primary-dark);
  padding-bottom: 12px;
  border-bottom: 2px solid var(--border);
}
.faq-list {
  margin-bottom: 32px;
}
.faq-item {
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
  overflow: hidden;
  background: #fff;
}
.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 20px;
  cursor: pointer;
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  transition: background 0.2s;
}
.faq-question:hover {
  background: var(--accent2);
}
.faq-question .icon {
  font-size: 20px;
  font-weight: 400;
  color: var(--primary);
  flex-shrink: 0;
  margin-left: 12px;
  transition: transform 0.3s;
}
.faq-item.open .faq-question .icon {
  transform: rotate(45deg);
}
.faq-answer {
  display: none;
  padding: 0 20px 16px;
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.8;
  border-top: 1px solid var(--border);
}
.faq-item.open .faq-answer {
  display: block;
}

/* ===== 内页Banner ===== */
.inner-banner {
  padding: 60px 0;
  color: #fff;
  text-align: center;
}
.inner-banner h1 {
  font-size: 32px;
  font-weight: 800;
  margin-bottom: 12px;
  text-shadow: 0 2px 8px rgba(0,0,0,0.2);
}
.inner-banner p {
  font-size: 16px;
  opacity: 0.9;
}

/* ===== 搜索栏 ===== */
.search-bar-section {
  background: var(--bg-alt);
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
}
.search-bar-inner {
  max-width: 600px;
  margin: 0 auto;
  display: flex;
  gap: 8px;
  padding: 0 20px;
}
.search-bar-inner input {
  flex: 1;
  padding: 10px 16px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 14px;
  outline: none;
  transition: border-color 0.2s;
}
.search-bar-inner input:focus {
  border-color: var(--primary);
}
.search-bar-inner button {
  padding: 10px 24px;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s;
}
.search-bar-inner button:hover {
  background: var(--primary-dark);
}

/* ===== 面包屑 ===== */
.breadcrumb {
  background: #fff;
  border-bottom: 1px solid var(--border);
  padding: 10px 0;
  font-size: 13px;
  color: var(--text-muted);
}
.breadcrumb a {
  color: var(--primary);
  text-decoration: none;
}
.breadcrumb a:hover { text-decoration: underline; }
.breadcrumb span { color: var(--text-muted); }

/* ===== 视频卡片增强交互 ===== */
.video-card .play-btn {
  opacity: 0;
  transform: scale(0.8);
  transition: opacity 0.25s, transform 0.25s;
}
.video-card:hover .play-btn {
  opacity: 1;
  transform: scale(1);
}
.video-card .video-thumb::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0);
  transition: background 0.25s;
  border-radius: var(--radius) var(--radius) 0 0;
}
.video-card:hover .video-thumb::after {
  background: rgba(0,0,0,0.18);
}

/* ===== 移动端响应式补充 ===== */
@media (max-width: 1024px) {
  .community-zone-grid { grid-template-columns: repeat(2, 1fr); }
  .partner-grid { grid-template-columns: repeat(2, 1fr); }
  .partner-logos { grid-template-columns: repeat(4, 1fr); }
  .process-steps { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .community-zone-grid { grid-template-columns: 1fr; }
  .partner-grid { grid-template-columns: 1fr; }
  .partner-type-grid { grid-template-columns: 1fr; }
  .partner-logos { grid-template-columns: repeat(3, 1fr); }
  .process-steps { grid-template-columns: 1fr; }
  .inner-banner h1 { font-size: 22px; }
  .faq-question { font-size: 14px; }
}
@media (max-width: 480px) {
  .partner-logos { grid-template-columns: repeat(2, 1fr); }
  .faq-cats { gap: 8px; }
  .faq-cat-btn { padding: 6px 14px; font-size: 13px; }
}