/* ===== 少妇 - 植物视频社区 主样式 ===== */
/* jriorwx.cn */

:root {
  --primary: #1a7a3c;
  --primary-dark: #0f5228;
  --primary-light: #2ecc71;
  --accent: #f39c12;
  --accent2: #e74c3c;
  --bg-dark: #0d1f12;
  --bg-card: #162a1c;
  --bg-light: #f5f9f5;
  --text-main: #1a1a1a;
  --text-light: #f0f7f0;
  --text-muted: #7a9a7a;
  --border: #2a4a2a;
  --shadow: 0 4px 24px rgba(0,0,0,0.18);
  --radius: 12px;
  --radius-sm: 6px;
  --transition: 0.3s ease;
  --font-main: 'PingFang SC','Microsoft YaHei','Noto Sans SC',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);
  background: var(--bg-light);
  color: var(--text-main);
  line-height: 1.7;
  overflow-x: hidden;
}

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

/* ===== 顶部公告栏 ===== */
.top-notice {
  background: var(--primary-dark);
  color: #c8f5d0;
  text-align: center;
  padding: 6px 16px;
  font-size: 13px;
  letter-spacing: 0.5px;
}
.top-notice a { color: var(--accent); text-decoration: none; }

/* ===== 导航 ===== */
#site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(13,31,18,0.97);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 2px 16px rgba(0,0,0,0.3);
}
.header-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 24px;
  height: 68px;
}
.logo-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  flex-shrink: 0;
}
.logo-wrap img {
  height: 44px;
  width: auto;
}
.logo-text {
  font-size: 22px;
  font-weight: 900;
  color: #fff;
  letter-spacing: 1px;
}
.logo-text span { color: var(--primary-light); }

/* 主导航 */
#main-nav { flex: 1; }
#main-nav ul {
  display: flex;
  list-style: none;
  gap: 4px;
  align-items: center;
}
#main-nav ul li { position: relative; }
#main-nav ul li a {
  display: block;
  padding: 8px 14px;
  color: #d0e8d0;
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: var(--transition);
  white-space: nowrap;
}
#main-nav ul li a:hover,
#main-nav ul li a.active {
  background: var(--primary);
  color: #fff;
}
/* 下拉菜单 */
#main-nav ul li .dropdown {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 160px;
  background: var(--bg-dark);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow);
  z-index: 999;
  padding: 6px 0;
}
#main-nav ul li:hover .dropdown { display: block; }
#main-nav ul li .dropdown a {
  padding: 8px 16px;
  border-radius: 0;
  font-size: 13px;
}

/* 搜索框 */
.header-search {
  display: flex;
  align-items: center;
  background: rgba(255,255,255,0.08);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 4px 14px;
  gap: 8px;
  flex-shrink: 0;
}
.header-search input {
  background: none;
  border: none;
  outline: none;
  color: #fff;
  font-size: 13px;
  width: 160px;
  font-family: var(--font-main);
}
.header-search input::placeholder { color: #7a9a7a; }
.header-search button {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--primary-light);
  font-size: 16px;
  padding: 0;
  line-height: 1;
}

/* 搜索栏（导航下方） */
.search-bar-wrap {
  background: var(--primary-dark);
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
}
.search-bar-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.search-bar-inner .search-label {
  color: var(--primary-light);
  font-size: 13px;
  white-space: nowrap;
}
.search-bar-main {
  flex: 1;
  display: flex;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(46,204,113,0.3);
  border-radius: 24px;
  overflow: hidden;
  max-width: 600px;
}
.search-bar-main input {
  flex: 1;
  background: none;
  border: none;
  outline: none;
  padding: 8px 16px;
  color: #fff;
  font-size: 14px;
  font-family: var(--font-main);
}
.search-bar-main input::placeholder { color: #7a9a7a; }
.search-bar-main button {
  background: var(--primary);
  border: none;
  color: #fff;
  padding: 8px 20px;
  cursor: pointer;
  font-size: 14px;
  font-family: var(--font-main);
  transition: var(--transition);
}
.search-bar-main button:hover { background: var(--primary-light); }
.search-hot-tags { display: flex; gap: 8px; flex-wrap: wrap; }
.search-hot-tags a {
  color: #a0c8a0;
  font-size: 12px;
  text-decoration: none;
  padding: 2px 8px;
  border: 1px solid rgba(46,204,113,0.2);
  border-radius: 12px;
  transition: var(--transition);
}
.search-hot-tags a:hover { background: var(--primary); color: #fff; }

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

/* ===== Banner ===== */
#hero-banner {
  position: relative;
  min-height: 520px;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('../images/banner.jpg');
  background-size: cover;
  background-position: center;
  filter: brightness(0.55);
  z-index: 0;
}
.hero-content {
  position: relative;
  z-index: 1;
  max-width: 1280px;
  margin: 0 auto;
  padding: 60px 24px;
  width: 100%;
}
.hero-badge {
  display: inline-block;
  background: var(--primary);
  color: #fff;
  font-size: 12px;
  padding: 4px 14px;
  border-radius: 20px;
  margin-bottom: 16px;
  letter-spacing: 1px;
}
.hero-content h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 900;
  color: #fff;
  line-height: 1.2;
  margin-bottom: 16px;
  text-shadow: 0 2px 12px rgba(0,0,0,0.5);
}
.hero-content h1 .brand { color: var(--primary-light); }
.hero-desc {
  font-size: 1.1rem;
  color: #c8e8c8;
  max-width: 600px;
  margin-bottom: 28px;
  line-height: 1.8;
}
.hero-stats {
  display: flex;
  gap: 32px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}
.hero-stat { text-align: center; }
.hero-stat .num {
  font-size: 2rem;
  font-weight: 900;
  color: var(--primary-light);
  display: block;
}
.hero-stat .label { font-size: 12px; color: #a0c8a0; }
.hero-btns { display: flex; gap: 12px; flex-wrap: wrap; }
.btn-primary {
  background: var(--primary);
  color: #fff;
  padding: 12px 28px;
  border-radius: 28px;
  text-decoration: none;
  font-weight: 700;
  font-size: 15px;
  transition: var(--transition);
  border: 2px solid transparent;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.btn-primary:hover { background: var(--primary-light); transform: translateY(-2px); box-shadow: 0 6px 20px rgba(46,204,113,0.4); }
.btn-outline {
  background: transparent;
  color: #fff;
  padding: 12px 28px;
  border-radius: 28px;
  text-decoration: none;
  font-weight: 700;
  font-size: 15px;
  transition: var(--transition);
  border: 2px solid rgba(255,255,255,0.5);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.btn-outline:hover { border-color: var(--primary-light); color: var(--primary-light); }

/* ===== 通用区块 ===== */
.section { padding: 72px 0; }
.section-dark { background: var(--bg-dark); color: var(--text-light); }
.section-green { background: linear-gradient(135deg, #0d2a18 0%, #1a4a28 100%); color: var(--text-light); }
.section-light { background: #fff; }
.container { max-width: 1280px; margin: 0 auto; padding: 0 24px; }
.section-header { text-align: center; margin-bottom: 48px; }
.section-tag {
  display: inline-block;
  background: rgba(46,204,113,0.15);
  color: var(--primary-light);
  font-size: 12px;
  padding: 4px 14px;
  border-radius: 20px;
  margin-bottom: 12px;
  letter-spacing: 1px;
  border: 1px solid rgba(46,204,113,0.3);
}
.section-header h2 {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 800;
  margin-bottom: 12px;
  line-height: 1.3;
}
.section-header p { font-size: 1rem; color: var(--text-muted); max-width: 600px; margin: 0 auto; }
.section-dark .section-header p,
.section-green .section-header p { color: #a0c8a0; }

/* ===== 视频卡片 ===== */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}
.video-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: var(--transition);
  cursor: pointer;
  position: relative;
}
.video-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(0,0,0,0.3);
  border-color: var(--primary);
}
.video-thumb {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
  background: #0d1f12;
}
.video-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.video-card:hover .video-thumb img { transform: scale(1.05); }
.play-btn {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0);
  transition: background 0.3s;
  opacity: 0;
}
.video-card:hover .play-btn {
  opacity: 1;
  background: rgba(0,0,0,0.45);
}
.play-btn-icon {
  width: 56px;
  height: 56px;
  background: rgba(46,204,113,0.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transform: scale(0.8);
  transition: transform 0.3s;
}
.video-card:hover .play-btn-icon { transform: scale(1); }
.play-btn-icon::after {
  content: '';
  border-style: solid;
  border-width: 10px 0 10px 18px;
  border-color: transparent transparent transparent #fff;
  margin-left: 4px;
}
.video-duration {
  position: absolute;
  bottom: 8px;
  right: 8px;
  background: rgba(0,0,0,0.75);
  color: #fff;
  font-size: 11px;
  padding: 2px 6px;
  border-radius: 4px;
}
.video-info { padding: 14px; }
.video-info h3 {
  font-size: 14px;
  font-weight: 700;
  color: #e0f0e0;
  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;
  gap: 12px;
  font-size: 12px;
  color: var(--text-muted);
}
.video-meta span { display: flex; align-items: center; gap: 4px; }
.video-tag {
  display: inline-block;
  background: rgba(46,204,113,0.12);
  color: var(--primary-light);
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 10px;
  margin-top: 8px;
}

/* ===== 模块卡片 ===== */
.module-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 20px;
}
.module-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 20px;
  text-align: center;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.module-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--primary-light));
}
.module-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: var(--primary); }
.module-icon {
  font-size: 2.5rem;
  margin-bottom: 14px;
  display: block;
}
.module-card h3 { font-size: 1.1rem; font-weight: 700; color: #e0f0e0; margin-bottom: 8px; }
.module-card p { font-size: 13px; color: var(--text-muted); line-height: 1.6; }

/* ===== 专家卡片 ===== */
.expert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}
.expert-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
}
.expert-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.expert-img-wrap {
  position: relative;
  height: 240px;
  overflow: hidden;
}
.expert-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top;
}
.expert-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  background: var(--primary);
  color: #fff;
  font-size: 11px;
  padding: 3px 10px;
  border-radius: 12px;
}
.expert-info { padding: 20px; }
.expert-info h3 { font-size: 1.2rem; font-weight: 800; color: #e0f0e0; margin-bottom: 4px; }
.expert-title { font-size: 13px; color: var(--primary-light); margin-bottom: 10px; }
.expert-desc { font-size: 13px; color: var(--text-muted); line-height: 1.6; margin-bottom: 14px; }
.expert-awards { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 14px; }
.award-tag {
  background: rgba(243,156,18,0.12);
  color: var(--accent);
  font-size: 11px;
  padding: 3px 10px;
  border-radius: 10px;
  border: 1px solid rgba(243,156,18,0.2);
}
.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: var(--transition);
  border: 1px solid var(--primary);
  color: var(--primary-light);
  background: transparent;
  cursor: pointer;
}
.btn-sm:hover { background: var(--primary); color: #fff; }
.btn-sm.filled { background: var(--primary); color: #fff; }
.btn-sm.filled:hover { background: var(--primary-light); }

/* ===== 评论区 ===== */
.review-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
}
.review-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  transition: var(--transition);
}
.review-card:hover { border-color: var(--primary); }
.review-header { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
.review-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 700;
  font-size: 16px;
  flex-shrink: 0;
}
.review-user-info h4 { font-size: 14px; font-weight: 700; color: #e0f0e0; }
.review-user-info span { font-size: 12px; color: var(--text-muted); }
.review-stars { color: var(--accent); font-size: 14px; margin-bottom: 8px; }
.review-text { font-size: 13px; color: #b0c8b0; line-height: 1.7; }
.review-date { font-size: 11px; color: var(--text-muted); margin-top: 10px; }

/* ===== 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-q {
  padding: 16px 20px;
  background: var(--bg-card);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
  color: #e0f0e0;
  font-size: 15px;
  transition: var(--transition);
}
.faq-q:hover { background: rgba(46,204,113,0.08); }
.faq-q .faq-icon {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  flex-shrink: 0;
  transition: transform 0.3s;
}
.faq-item.open .faq-q .faq-icon { transform: rotate(45deg); }
.faq-a {
  display: none;
  padding: 14px 20px 18px;
  background: rgba(13,31,18,0.5);
  font-size: 14px;
  color: #a0c8a0;
  line-height: 1.8;
}
.faq-item.open .faq-a { display: block; }

/* ===== 合作品牌 ===== */
.partner-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 16px;
}
.partner-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 20px;
  text-align: center;
  transition: var(--transition);
  color: #a0c8a0;
  font-weight: 700;
  font-size: 15px;
}
.partner-item:hover { border-color: var(--primary); background: rgba(46,204,113,0.08); color: var(--primary-light); }
.partner-icon { font-size: 2rem; margin-bottom: 8px; display: block; }

/* ===== 联系我们 ===== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}
.contact-info-block { }
.contact-info-block h3 { font-size: 1.4rem; font-weight: 800; color: #e0f0e0; margin-bottom: 20px; }
.contact-item {
  display: flex;
  gap: 14px;
  margin-bottom: 16px;
  align-items: flex-start;
}
.contact-icon {
  width: 40px;
  height: 40px;
  background: rgba(46,204,113,0.12);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}
.contact-detail h4 { font-size: 13px; color: var(--text-muted); margin-bottom: 2px; }
.contact-detail p { font-size: 14px; color: #e0f0e0; font-weight: 500; }
.store-img {
  width: 100%;
  border-radius: var(--radius);
  margin-top: 16px;
  object-fit: cover;
  height: 200px;
}
.qr-row { display: flex; gap: 20px; margin-top: 20px; }
.qr-item { text-align: center; }
.qr-item img { width: 100px; height: 100px; border-radius: 8px; object-fit: cover; }
.qr-item p { font-size: 12px; color: var(--text-muted); margin-top: 6px; }

/* ===== 社交分享 ===== */
.share-bar {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: center;
}
.share-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
  transition: var(--transition);
  border: 1px solid transparent;
  cursor: pointer;
}
.share-btn.wechat { background: #07c160; color: #fff; }
.share-btn.weibo { background: #e6162d; color: #fff; }
.share-btn.douyin { background: #010101; color: #fff; border-color: #69c9d0; }
.share-btn.bilibili { background: #00a1d6; color: #fff; }
.share-btn:hover { opacity: 0.85; transform: translateY(-2px); }

/* ===== 面包屑 ===== */
.breadcrumb {
  padding: 12px 0;
  font-size: 13px;
  color: var(--text-muted);
}
.breadcrumb a { color: var(--primary-light); text-decoration: none; }
.breadcrumb a:hover { text-decoration: underline; }
.breadcrumb span { margin: 0 6px; }

/* ===== 页脚 ===== */
#site-footer {
  background: var(--bg-dark);
  border-top: 1px solid var(--border);
  padding: 60px 0 0;
  color: #a0c8a0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-brand .logo-wrap { margin-bottom: 16px; }
.footer-brand p { font-size: 13px; line-height: 1.8; color: #7a9a7a; max-width: 280px; }
.footer-col h4 { font-size: 15px; font-weight: 700; color: #e0f0e0; margin-bottom: 16px; }
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 8px; }
.footer-col ul li a { color: #7a9a7a; text-decoration: none; font-size: 13px; transition: var(--transition); }
.footer-col ul li a:hover { color: var(--primary-light); }
.footer-qr-row { display: flex; gap: 16px; margin-top: 16px; }
.footer-qr-item { text-align: center; }
.footer-qr-item img { width: 80px; height: 80px; border-radius: 6px; object-fit: cover; }
.footer-qr-item p { font-size: 11px; color: #7a9a7a; margin-top: 4px; }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 20px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  color: #7a9a7a;
}
.footer-bottom a { color: #7a9a7a; text-decoration: none; }
.footer-bottom a:hover { color: var(--primary-light); }
.footer-links { display: flex; gap: 16px; }
.update-time { font-size: 12px; color: #5a7a5a; }

/* ===== AI赋能区 ===== */
.ai-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.ai-card {
  background: linear-gradient(135deg, rgba(26,122,60,0.15), rgba(46,204,113,0.05));
  border: 1px solid rgba(46,204,113,0.2);
  border-radius: var(--radius);
  padding: 28px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.ai-card::after {
  content: '';
  position: absolute;
  bottom: -20px;
  right: -20px;
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: rgba(46,204,113,0.06);
}
.ai-card:hover { border-color: var(--primary-light); transform: translateY(-4px); }
.ai-card h3 { font-size: 1.1rem; font-weight: 700; color: #e0f0e0; margin-bottom: 10px; }
.ai-card p { font-size: 13px; color: #a0c8a0; line-height: 1.7; }
.ai-icon { font-size: 2.2rem; margin-bottom: 14px; display: block; }

/* ===== 内页 Banner ===== */
.inner-banner {
  background: linear-gradient(135deg, var(--bg-dark) 0%, #1a3a22 100%);
  padding: 60px 0;
  text-align: center;
  border-bottom: 1px solid var(--border);
}
.inner-banner h1 { font-size: 2.2rem; font-weight: 900; color: #fff; margin-bottom: 12px; }
.inner-banner p { font-size: 1rem; color: #a0c8a0; max-width: 600px; margin: 0 auto; }

/* ===== 加入社区指南 ===== */
.how-to-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.how-to-step {
  text-align: center;
  padding: 24px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  position: relative;
}
.step-num {
  width: 48px;
  height: 48px;
  background: var(--primary);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  font-weight: 900;
  margin: 0 auto 14px;
}
.how-to-step h3 { font-size: 15px; font-weight: 700; color: #e0f0e0; margin-bottom: 8px; }
.how-to-step 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; }
  .how-to-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .header-inner { gap: 12px; }
  #main-nav { display: none; }
  #main-nav.open { display: block; position: absolute; top: 68px; left: 0; right: 0; background: var(--bg-dark); padding: 16px; border-bottom: 1px solid var(--border); }
  #main-nav.open ul { flex-direction: column; }
  .hamburger { display: flex; }
  .header-search { display: none; }
  .hero-content h1 { font-size: 1.8rem; }
  .hero-stats { gap: 16px; }
  .footer-grid { grid-template-columns: 1fr; }
  .ai-grid { grid-template-columns: 1fr; }
  .how-to-grid { grid-template-columns: 1fr 1fr; }
  .section { padding: 48px 0; }
  .video-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 480px) {
  .video-grid { grid-template-columns: 1fr; }
  .how-to-grid { grid-template-columns: 1fr; }
  .hero-btns { flex-direction: column; }
  .btn-primary, .btn-outline { text-align: center; justify-content: center; }
}

/* ===== 懒加载占位 ===== */
img[data-src] { background: #162a1c; }

/* ===== 滚动动画 ===== */
.fade-in { opacity: 0; transform: translateY(20px); transition: opacity 0.6s ease, transform 0.6s ease; }
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* ===== 视频模态框 ===== */
.video-modal {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.9);
  z-index: 9999;
  align-items: center;
  justify-content: center;
}
.video-modal.open { display: flex; }
.video-modal-inner {
  background: #000;
  border-radius: var(--radius);
  overflow: hidden;
  width: 90vw;
  max-width: 900px;
  position: relative;
}
.video-modal video {
  width: 100%;
  aspect-ratio: 16/9;
  display: block;
  background: #000;
}
.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%;
  cursor: pointer;
  font-size: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1;
  transition: var(--transition);
}
.modal-close:hover { background: rgba(255,255,255,0.3); }

/* ===== 关键词标签云 ===== */
.tag-cloud { display: flex; flex-wrap: wrap; gap: 8px; }
.kw-tag {
  background: rgba(46,204,113,0.1);
  border: 1px solid rgba(46,204,113,0.2);
  color: #a0c8a0;
  font-size: 12px;
  padding: 4px 12px;
  border-radius: 14px;
  text-decoration: none;
  transition: var(--transition);
}
.kw-tag:hover { background: var(--primary); color: #fff; border-color: var(--primary); }

/* ===== 社区入口 ===== */
.community-entry-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
}
.community-entry {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  text-align: center;
  text-decoration: none;
  transition: var(--transition);
  color: #e0f0e0;
}
.community-entry:hover { border-color: var(--primary-light); transform: translateY(-3px); }
.community-entry .icon { font-size: 2rem; margin-bottom: 10px; display: block; }
.community-entry h4 { font-size: 14px; font-weight: 700; margin-bottom: 4px; }
.community-entry p { font-size: 12px; color: var(--text-muted); }