/* 抖阴植物视频社区 - 全局样式 | hdnkigc.cn */
/* 原创配色：墨绿 #0D2B1A + 金色 #C9A84C + 翠绿 #2D6A4F */

:root {
  --primary: #0D2B1A;
  --secondary: #2D6A4F;
  --accent: #C9A84C;
  --accent-light: #E8C97A;
  --bg-dark: #071510;
  --bg-mid: #102318;
  --bg-light: #1A3D28;
  --text-main: #E8F5E9;
  --text-muted: #A8C5B0;
  --text-gold: #C9A84C;
  --border: #2D6A4F;
  --card-bg: #122A1C;
  --hover: #C9A84C;
  --shadow: 0 4px 24px rgba(0,0,0,0.5);
  --radius: 8px;
  --radius-lg: 16px;
}

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

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

body {
  font-family: 'Microsoft YaHei', '微软雅黑', 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
  background: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.7;
  min-height: 100vh;
}

a { color: var(--accent); text-decoration: none; transition: color 0.3s; }
a:hover { color: var(--accent-light); }

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

ul, ol { list-style: none; }

/* ===== 顶部公告栏 ===== */
.top-bar {
  background: var(--bg-mid);
  border-bottom: 1px solid var(--border);
  padding: 6px 0;
  font-size: 13px;
  color: var(--text-muted);
}
.top-bar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.top-bar-marquee { flex: 1; overflow: hidden; }
.top-bar-links a { color: var(--text-muted); margin-left: 16px; font-size: 12px; }
.top-bar-links a:hover { color: var(--accent); }

/* ===== 容器 ===== */
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.container-wide { max-width: 1400px; margin: 0 auto; padding: 0 20px; }

/* ===== 导航栏 ===== */
.site-header {
  background: var(--primary);
  border-bottom: 2px solid var(--accent);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: var(--shadow);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 20px;
  max-width: 1200px;
  margin: 0 auto;
  gap: 16px;
}
.site-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
  text-decoration: none;
}
.site-logo img { height: 50px; width: auto; }
.logo-text { display: flex; flex-direction: column; }
.logo-name {
  font-size: 22px;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 2px;
  line-height: 1.2;
}
.logo-sub {
  font-size: 11px;
  color: var(--text-muted);
  letter-spacing: 1px;
}

/* 导航菜单 */
.main-nav { flex: 1; }
.main-nav > ul {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  flex-wrap: nowrap;
}
.main-nav > ul > li { position: relative; }
.main-nav > ul > li > a {
  display: block;
  padding: 8px 14px;
  color: var(--text-main);
  font-size: 14px;
  font-weight: 500;
  border-radius: var(--radius);
  transition: all 0.3s;
  white-space: nowrap;
}
.main-nav > ul > li > a:hover,
.main-nav > ul > li.active > a {
  color: var(--accent);
  background: rgba(201,168,76,0.1);
}
.main-nav > ul > li > a .nav-arrow {
  font-size: 10px;
  margin-left: 4px;
  opacity: 0.7;
}

/* 下拉菜单 */
.dropdown {
  display: none;
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  min-width: 180px;
  background: var(--bg-mid);
  border: 1px solid var(--border);
  border-top: 2px solid var(--accent);
  border-radius: 0 0 var(--radius) var(--radius);
  box-shadow: var(--shadow);
  z-index: 999;
}
.main-nav > ul > li:hover .dropdown { display: block; }
.dropdown li a {
  display: block;
  padding: 10px 16px;
  color: var(--text-muted);
  font-size: 13px;
  border-bottom: 1px solid rgba(45,106,79,0.3);
  transition: all 0.2s;
}
.dropdown li:last-child a { border-bottom: none; }
.dropdown li a:hover { color: var(--accent); background: rgba(201,168,76,0.08); padding-left: 22px; }

/* 搜索框 */
.header-search {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}
.header-search input {
  width: 180px;
  padding: 7px 14px;
  background: var(--bg-light);
  border: 1px solid var(--border);
  border-radius: 20px;
  color: var(--text-main);
  font-size: 13px;
  outline: none;
  transition: border-color 0.3s;
}
.header-search input:focus { border-color: var(--accent); }
.header-search input::placeholder { color: var(--text-muted); }
.btn-search {
  padding: 7px 16px;
  background: var(--accent);
  color: var(--primary);
  border: none;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.3s;
}
.btn-search:hover { background: var(--accent-light); }

/* 汉堡菜单 */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
}
.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-main);
  border-radius: 2px;
  transition: all 0.3s;
}

/* ===== 面包屑 ===== */
.breadcrumb {
  background: var(--bg-mid);
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
}
.breadcrumb ol {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.breadcrumb li { color: var(--text-muted); }
.breadcrumb li::after { content: '›'; margin-left: 8px; color: var(--border); }
.breadcrumb li:last-child::after { display: none; }
.breadcrumb li:last-child { color: var(--accent); }
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--accent); }

/* ===== Hero Banner ===== */
.hero-section {
  position: relative;
  min-height: 520px;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  z-index: 0;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(7,21,16,0.92) 0%, rgba(13,43,26,0.75) 50%, rgba(7,21,16,0.6) 100%);
  z-index: 1;
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 1200px;
  margin: 0 auto;
  padding: 60px 20px;
  width: 100%;
}
.hero-badge {
  display: inline-block;
  background: rgba(201,168,76,0.2);
  border: 1px solid var(--accent);
  color: var(--accent);
  padding: 4px 14px;
  border-radius: 20px;
  font-size: 12px;
  letter-spacing: 2px;
  margin-bottom: 16px;
}
.hero-content h1 {
  font-size: 48px;
  font-weight: 800;
  color: var(--text-main);
  line-height: 1.2;
  margin-bottom: 16px;
  text-shadow: 0 2px 12px rgba(0,0,0,0.5);
}
.hero-content h1 .brand-highlight { color: var(--accent); }
.hero-content .hero-desc {
  font-size: 17px;
  color: var(--text-muted);
  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: 28px;
  font-weight: 700;
  color: var(--accent);
  display: block;
}
.hero-stat .label { font-size: 12px; color: var(--text-muted); }
.hero-btns { display: flex; gap: 12px; flex-wrap: wrap; }
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  background: var(--accent);
  color: var(--primary);
  border-radius: 4px;
  font-size: 15px;
  font-weight: 700;
  transition: all 0.3s;
  border: 2px solid var(--accent);
}
.btn-primary:hover { background: var(--accent-light); color: var(--primary); transform: translateY(-2px); }
.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  background: transparent;
  color: var(--accent);
  border: 2px solid var(--accent);
  border-radius: 4px;
  font-size: 15px;
  font-weight: 600;
  transition: all 0.3s;
}
.btn-outline:hover { background: rgba(201,168,76,0.1); transform: translateY(-2px); }

/* ===== 弹幕滚动栏 ===== */
.danmu-bar {
  background: var(--bg-mid);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 8px 0;
  overflow: hidden;
}
.danmu-inner {
  display: flex;
  align-items: center;
  gap: 16px;
}
.danmu-label {
  flex-shrink: 0;
  background: var(--accent);
  color: var(--primary);
  padding: 3px 12px;
  border-radius: 3px;
  font-size: 12px;
  font-weight: 700;
}
.danmu-scroll {
  flex: 1;
  overflow: hidden;
  white-space: nowrap;
}
.danmu-track {
  display: inline-block;
  animation: danmuScroll 40s linear infinite;
  font-size: 13px;
  color: var(--text-muted);
}
.danmu-track span { margin-right: 60px; }
.danmu-track span::before { content: '🌿 '; }
@keyframes danmuScroll {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* ===== 通用区块标题 ===== */
.section { padding: 60px 0; }
.section-alt { background: var(--bg-mid); }
.section-header { text-align: center; margin-bottom: 40px; }
.section-tag {
  display: inline-block;
  background: rgba(201,168,76,0.15);
  border: 1px solid rgba(201,168,76,0.4);
  color: var(--accent);
  padding: 4px 14px;
  border-radius: 20px;
  font-size: 12px;
  letter-spacing: 2px;
  margin-bottom: 12px;
}
.section-title {
  font-size: 30px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 10px;
}
.section-title .brand { color: var(--accent); }
.section-sub {
  font-size: 15px;
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto;
}
.section-more {
  text-align: center;
  margin-top: 32px;
}

/* ===== 视频卡片 ===== */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}
.video-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all 0.3s;
  cursor: pointer;
}
.video-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent);
  box-shadow: 0 8px 32px rgba(201,168,76,0.2);
}
.video-thumb {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16/9;
  background: var(--bg-light);
}
.video-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s;
}
.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(0,0,0,0.4);
  opacity: 0;
  transition: opacity 0.3s;
}
.video-card:hover .play-btn { opacity: 1; }
.play-icon {
  width: 56px;
  height: 56px;
  background: rgba(201,168,76,0.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transform: scale(0.8);
  transition: transform 0.3s;
}
.video-card:hover .play-icon { transform: scale(1); }
.play-icon::after {
  content: '';
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 10px 0 10px 18px;
  border-color: transparent transparent transparent var(--primary);
  margin-left: 4px;
}
.video-tag {
  position: absolute;
  top: 10px;
  left: 10px;
  background: var(--accent);
  color: var(--primary);
  padding: 2px 8px;
  border-radius: 3px;
  font-size: 11px;
  font-weight: 700;
}
.video-duration {
  position: absolute;
  bottom: 8px;
  right: 8px;
  background: rgba(0,0,0,0.7);
  color: #fff;
  padding: 2px 6px;
  border-radius: 3px;
  font-size: 11px;
}
.video-info { padding: 14px; }
.video-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 8px;
  line-height: 1.5;
  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-muted);
}
.video-views::before { content: '▶ '; }
.video-date { font-size: 11px; }
.video-category {
  display: inline-block;
  background: rgba(45,106,79,0.3);
  color: var(--accent);
  padding: 2px 8px;
  border-radius: 3px;
  font-size: 11px;
  margin-top: 8px;
}

/* ===== 模块卡片 ===== */
.module-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
}
.module-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 16px;
  text-align: center;
  transition: all 0.3s;
}
.module-card:hover {
  border-color: var(--accent);
  transform: translateY(-3px);
  box-shadow: 0 6px 24px rgba(201,168,76,0.15);
}
.module-icon {
  font-size: 36px;
  margin-bottom: 12px;
  display: block;
}
.module-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 6px;
}
.module-desc { font-size: 12px; color: var(--text-muted); line-height: 1.5; }

/* ===== 专家卡片 ===== */
.expert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 24px;
}
.expert-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all 0.3s;
}
.expert-card:hover {
  border-color: var(--accent);
  box-shadow: 0 8px 32px rgba(201,168,76,0.2);
}
.expert-photo {
  aspect-ratio: 1/1;
  overflow: hidden;
  background: var(--bg-light);
}
.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: 16px; }
.expert-name {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 4px;
}
.expert-title {
  font-size: 13px;
  color: var(--accent);
  margin-bottom: 8px;
}
.expert-desc { font-size: 13px; color: var(--text-muted); line-height: 1.6; }
.expert-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }
.expert-tag {
  background: rgba(45,106,79,0.3);
  color: var(--accent);
  padding: 2px 8px;
  border-radius: 3px;
  font-size: 11px;
}

/* ===== 评论区 ===== */
.review-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
}
.review-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  position: relative;
}
.review-card::before {
  content: '"';
  position: absolute;
  top: 12px;
  right: 16px;
  font-size: 48px;
  color: rgba(201,168,76,0.15);
  font-family: Georgia, serif;
  line-height: 1;
}
.review-stars { color: var(--accent); font-size: 14px; margin-bottom: 10px; }
.review-text { font-size: 14px; color: var(--text-muted); line-height: 1.7; margin-bottom: 14px; }
.review-author { display: flex; align-items: center; gap: 10px; }
.review-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  color: var(--accent);
  font-weight: 700;
  flex-shrink: 0;
}
.review-name { font-size: 13px; font-weight: 600; color: var(--text-main); }
.review-date { font-size: 11px; color: var(--text-muted); }

/* ===== FAQ ===== */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 12px;
  overflow: hidden;
}
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  cursor: pointer;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-main);
  transition: color 0.3s;
  user-select: none;
}
.faq-question:hover { color: var(--accent); }
.faq-question.active { color: var(--accent); }
.faq-arrow {
  font-size: 12px;
  transition: transform 0.3s;
  color: var(--accent);
}
.faq-question.active .faq-arrow { transform: rotate(180deg); }
.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-answer.open { display: block; }

/* ===== 标签云 ===== */
.tag-cloud { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; }
.tag-item {
  background: rgba(45,106,79,0.2);
  border: 1px solid var(--border);
  color: var(--text-muted);
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 13px;
  transition: all 0.3s;
}
.tag-item:hover {
  background: rgba(201,168,76,0.15);
  border-color: var(--accent);
  color: var(--accent);
}

/* ===== 数字统计 ===== */
.stats-bar {
  background: var(--bg-mid);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 32px 0;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  text-align: center;
}
.stat-item {}
.stat-num {
  font-size: 36px;
  font-weight: 800;
  color: var(--accent);
  display: block;
  line-height: 1.2;
}
.stat-label { font-size: 13px; color: var(--text-muted); margin-top: 4px; }

/* ===== 社区功能 ===== */
.community-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.community-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 20px;
  text-align: center;
  transition: all 0.3s;
  position: relative;
  overflow: hidden;
}
.community-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--secondary), var(--accent));
}
.community-card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
  box-shadow: 0 8px 32px rgba(201,168,76,0.15);
}
.community-icon { font-size: 40px; margin-bottom: 14px; }
.community-name {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 8px;
}
.community-desc { font-size: 13px; color: var(--text-muted); line-height: 1.6; }
.community-count {
  display: inline-block;
  background: rgba(201,168,76,0.15);
  color: var(--accent);
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 12px;
  margin-top: 10px;
}

/* ===== 页脚 ===== */
.site-footer {
  background: var(--bg-dark);
  border-top: 2px solid var(--accent);
  padding: 48px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 32px;
  margin-bottom: 40px;
}
.footer-brand {}
.footer-logo { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; }
.footer-logo img { height: 40px; }
.footer-logo-name { font-size: 18px; font-weight: 700; color: var(--accent); }
.footer-about { font-size: 13px; color: var(--text-muted); line-height: 1.8; margin-bottom: 16px; }
.footer-social { display: flex; gap: 10px; }
.social-btn {
  width: 36px;
  height: 36px;
  background: var(--bg-light);
  border: 1px solid var(--border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  color: var(--text-muted);
  transition: all 0.3s;
}
.social-btn:hover { background: var(--accent); color: var(--primary); border-color: var(--accent); }
.footer-col h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}
.footer-col ul li { margin-bottom: 8px; }
.footer-col ul li a { font-size: 13px; color: var(--text-muted); transition: color 0.3s; }
.footer-col ul li a:hover { color: var(--accent); }
.footer-trust {
  background: var(--bg-mid);
  border-top: 1px solid var(--border);
  padding: 20px 0;
  margin-top: 0;
}
.footer-trust-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}
.trust-badges { display: flex; gap: 12px; flex-wrap: wrap; }
.trust-badge {
  background: rgba(45,106,79,0.2);
  border: 1px solid var(--border);
  color: var(--text-muted);
  padding: 4px 12px;
  border-radius: 4px;
  font-size: 12px;
}
.footer-bottom {
  background: var(--bg-dark);
  border-top: 1px solid var(--border);
  padding: 16px 0;
}
.footer-bottom-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 12px;
  color: var(--text-muted);
}
.footer-bottom a { color: var(--text-muted); }
.footer-bottom a:hover { color: var(--accent); }
.update-time { color: var(--accent); font-size: 12px; }

/* ===== 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.active { display: flex; }
.modal-inner {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  max-width: 800px;
  width: 90%;
  position: relative;
}
.modal-close {
  position: absolute;
  top: 12px;
  right: 16px;
  font-size: 24px;
  color: var(--text-muted);
  cursor: pointer;
  transition: color 0.3s;
  background: none;
  border: none;
}
.modal-close:hover { color: var(--accent); }
.modal-video-wrap {
  aspect-ratio: 16/9;
  background: #000;
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.modal-play-placeholder {
  text-align: center;
  color: var(--text-muted);
}
.modal-play-placeholder .big-play {
  font-size: 64px;
  color: var(--accent);
  display: block;
  margin-bottom: 12px;
}
.modal-title { font-size: 16px; font-weight: 600; color: var(--text-main); }

/* ===== 内页通用 ===== */
.page-hero {
  background: linear-gradient(135deg, var(--primary) 0%, var(--bg-mid) 100%);
  padding: 48px 0;
  border-bottom: 2px solid var(--accent);
}
.page-hero h1 {
  font-size: 36px;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 10px;
}
.page-hero h1 .brand { color: var(--accent); }
.page-hero p { font-size: 15px; color: var(--text-muted); }

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .community-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .header-inner { flex-wrap: wrap; }
  .main-nav { display: none; width: 100%; order: 3; }
  .main-nav.open { display: block; }
  .main-nav > ul { flex-direction: column; align-items: flex-start; gap: 0; }
  .main-nav > ul > li { width: 100%; }
  .main-nav > ul > li > a { padding: 12px 16px; border-radius: 0; border-bottom: 1px solid var(--border); }
  .dropdown { position: static; border: none; border-top: none; box-shadow: none; background: var(--bg-dark); }
  .hamburger { display: flex; }
  .header-search { display: none; }
  .hero-content h1 { font-size: 30px; }
  .hero-stats { gap: 16px; }
  .section-title { font-size: 22px; }
  .video-grid { grid-template-columns: repeat(2, 1fr); }
  .expert-grid { grid-template-columns: repeat(2, 1fr); }
  .community-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-bottom-inner { flex-direction: column; text-align: center; }
  .footer-trust-inner { flex-direction: column; }
}
@media (max-width: 480px) {
  .video-grid { grid-template-columns: 1fr; }
  .expert-grid { grid-template-columns: 1fr; }
  .hero-content h1 { font-size: 24px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .module-grid { grid-template-columns: repeat(2, 1fr); }
}