/* =============================================
   抖音风 - 主样式文件
   域名: 52uv0d.cn
   配色: 玫瑰金 + 深紫 + 樱花粉（完全原创）
   ============================================= */

/* ── CSS变量 ── */
:root {
  --primary:      #1a8b3a;
  --primary-dark: #0d5520;
  --primary-light:#4ad46a;
  --accent:       #f5cc6a;
  --accent2:      #c89cf0;
  --bg-deep:      #050f08;
  --bg-main:      #081a0e;
  --bg-mid:       #0d2214;
  --bg-card:      #0d2214;
  --border:       rgba(200,51,106,0.18);
  --text-primary: #f5e6ee;
  --text-muted:   rgba(245,230,238,0.55);
  --text-faint:   rgba(245,230,238,0.3);
  --radius-sm:    8px;
  --radius-md:    14px;
  --radius-lg:    22px;
  --shadow-card:  0 4px 24px rgba(0,0,0,0.4);
  --shadow-glow:  0 0 24px rgba(200,51,106,0.25);
  --transition:   0.28s cubic-bezier(.4,0,.2,1);
  --font-main:    'PingFang SC','Microsoft YaHei','Noto Sans SC',sans-serif;
}

/* ── 重置 ── */
*, *::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-main);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--primary-light); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--accent); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }
button { cursor: pointer; font-family: inherit; }
input, button, textarea { outline: none; }

/* ── 干扰标签隐藏 ── */
.noise-wrap,
[id^="n"],[id^="m"],[id^="k"],[id^="j"],
[class^="n"],[class^="m"],[class^="k"],[class^="j"] {
  /* 仅通过inline style控制，此处不干扰正常元素 */
}

/* ── 布局容器 ── */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  width: 100%;
}
.text-center { text-align: center; }

/* ── 顶部公告栏 ── */
.top-bar {
  background: linear-gradient(90deg, var(--primary-dark), var(--primary), var(--primary-dark));
  padding: 8px 0;
  font-size: 0.82rem;
  color: rgba(255,255,255,0.9);
  text-align: center;
  letter-spacing: 0.02em;
}
.top-bar a { color: #fff; font-weight: 600; text-decoration: underline; }

/* ── 导航栏 ── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 200;
  background: rgba(15,6,23,0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow var(--transition);
}
.site-header.scrolled { box-shadow: 0 4px 24px rgba(200,51,106,0.2); }
.nav-wrap {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 12px 0;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  color: var(--text-primary);
}
.logo-img {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 2px solid var(--primary);
  object-fit: cover;
}
.logo-text {
  display: block;
  font-size: 1.1rem;
  font-weight: 800;
  background: linear-gradient(135deg, #f06292, #f5cc6a);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
}
.logo-sub {
  display: block;
  font-size: 0.68rem;
  color: var(--text-muted);
  letter-spacing: 0.05em;
}
.nav-menu {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1;
}
.nav-link {
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: all var(--transition);
  white-space: nowrap;
}
.nav-link:hover, .nav-link.active {
  color: #fff;
  background: rgba(200,51,106,0.18);
}
.nav-link.active { color: var(--primary-light); }
.nav-search-wrap { position: relative; }
.nav-search {
  display: flex;
  align-items: center;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--border);
  border-radius: 24px;
  overflow: hidden;
  transition: border-color var(--transition);
}
.nav-search:focus-within { border-color: var(--primary); }
.nav-search button {
  padding: 8px 12px;
  background: none;
  border: none;
  color: var(--text-muted);
}
.nav-search input {
  background: none;
  border: none;
  padding: 8px 14px 8px 0;
  font-size: 0.85rem;
  color: var(--text-primary);
  width: 180px;
}
.nav-search input::placeholder { color: var(--text-faint); }
.search-suggestions {
  display: none;
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  right: 0;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  z-index: 300;
  overflow: hidden;
}
.search-suggestions.show { display: block; }
.search-suggestions li {
  padding: 10px 16px;
  font-size: 0.85rem;
  color: var(--text-muted);
  cursor: pointer;
  transition: background var(--transition);
}
.search-suggestions li:hover { background: rgba(200,51,106,0.12); color: #fff; }
.nav-actions { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  padding: 4px;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--transition);
}

/* ── 按钮 ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 12px 28px;
  border-radius: 50px;
  font-size: 0.9rem;
  font-weight: 600;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  white-space: nowrap;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  box-shadow: 0 4px 16px rgba(200,51,106,0.35);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(200,51,106,0.5);
  color: #fff;
}
.btn-outline {
  background: transparent;
  color: var(--primary-light);
  border-color: var(--primary);
}
.btn-outline:hover {
  background: rgba(200,51,106,0.12);
  color: #fff;
  border-color: var(--primary-light);
}
.btn-gold {
  background: linear-gradient(135deg, #f5cc6a, #e8a830);
  color: #1a0a1e;
  font-weight: 700;
  box-shadow: 0 4px 16px rgba(245,204,106,0.3);
}
.btn-gold:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(245,204,106,0.45);
  color: #1a0a1e;
}

/* ── 标签 ── */
.tag {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
  background: rgba(200,51,106,0.15);
  color: var(--primary-light);
  border: 1px solid rgba(200,51,106,0.25);
}
.tag-purple {
  background: rgba(200,156,240,0.15);
  color: var(--accent2);
  border-color: rgba(200,156,240,0.25);
}
.tag-gold {
  background: rgba(245,204,106,0.15);
  color: var(--accent);
  border-color: rgba(245,204,106,0.25);
}

/* ── Hero区域 ── */
.hero-section {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding: 80px 0 60px;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background: url('/images/banner-bg.jpg') center/cover no-repeat;
  z-index: 0;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(15,6,23,0.92) 0%, rgba(26,10,30,0.75) 50%, rgba(139,26,74,0.4) 100%);
  z-index: 1;
}
.hero-particles { position: absolute; inset: 0; z-index: 2; pointer-events: none; }
.hero-content { position: relative; z-index: 3; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(200,51,106,0.15);
  border: 1px solid rgba(200,51,106,0.3);
  border-radius: 50px;
  padding: 6px 16px;
  font-size: 0.82rem;
  color: var(--primary-light);
  margin-bottom: 20px;
}
.hero-badge .dot {
  width: 8px; height: 8px;
  background: #f06292;
  border-radius: 50%;
  animation: pulse 1.5s ease-in-out infinite;
}
@keyframes pulse { 0%,100%{opacity:1;transform:scale(1)} 50%{opacity:.5;transform:scale(1.4)} }
.hero-title {
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 900;
  line-height: 1.2;
  margin-bottom: 20px;
  color: #fff;
}
.hero-title .highlight {
  background: linear-gradient(135deg, #f06292, #f5cc6a, #c89cf0);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-desc {
  font-size: 1rem;
  color: rgba(245,230,238,0.75);
  line-height: 1.8;
  margin-bottom: 28px;
  max-width: 520px;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 36px; }
.hero-stats {
  display: flex;
  gap: 32px;
  flex-wrap: wrap;
}
.hero-stat-num {
  font-size: 1.6rem;
  font-weight: 800;
  background: linear-gradient(135deg, #f06292, #f5cc6a);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-stat-label { font-size: 0.78rem; color: var(--text-muted); margin-top: 2px; }
.hero-right { position: relative; z-index: 3; }
.hero-img-wrap {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: visible;
}
.hero-img-wrap img {
  width: 100%;
  border-radius: var(--radius-lg);
  border: 2px solid rgba(200,51,106,0.3);
  box-shadow: 0 16px 48px rgba(0,0,0,0.5), var(--shadow-glow);
  object-fit: cover;
  height: 420px;
}
.hero-img-badge {
  position: absolute;
  background: rgba(26,10,30,0.9);
  border: 1px solid rgba(200,51,106,0.3);
  border-radius: 50px;
  padding: 8px 16px;
  font-size: 0.8rem;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 8px;
  backdrop-filter: blur(8px);
  box-shadow: var(--shadow-card);
}
.badge-1 { top: 20px; left: -20px; }
.badge-2 { bottom: 30px; right: -20px; }
.badge-icon { font-size: 1rem; }

/* ── Section通用 ── */
.section { padding: 80px 0; }
.section-alt { background: var(--bg-mid); }
.section-dark { background: var(--bg-deep); }
.section-rose { background: linear-gradient(135deg, rgba(139,26,74,0.15) 0%, rgba(200,51,106,0.08) 100%); }
.section-title-wrap { text-align: center; margin-bottom: 48px; }
.title-badge {
  display: inline-block;
  background: rgba(200,51,106,0.12);
  border: 1px solid rgba(200,51,106,0.25);
  color: var(--primary-light);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 5px 16px;
  border-radius: 50px;
  margin-bottom: 14px;
}
.section-title {
  font-size: clamp(1.5rem, 3.5vw, 2.2rem);
  font-weight: 800;
  color: #fff;
  margin-bottom: 12px;
  line-height: 1.3;
}
.section-subtitle {
  font-size: 0.95rem;
  color: var(--text-muted);
  max-width: 560px;
  margin: 0 auto;
  line-height: 1.7;
}

/* ── 网格布局 ── */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }

/* ── 视频网格 ── */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
}
.video-card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: all var(--transition);
  cursor: pointer;
}
.video-card:hover {
  transform: translateY(-4px);
  border-color: rgba(200,51,106,0.4);
  box-shadow: 0 12px 32px rgba(0,0,0,0.4), var(--shadow-glow);
}
.video-thumb {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--bg-deep);
}
.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); }
.video-play-btn {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0);
  transition: background var(--transition);
}
.video-card:hover .video-play-btn { background: rgba(0,0,0,0.45); }
.play-icon {
  width: 52px;
  height: 52px;
  background: rgba(255,255,255,0.95);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transform: scale(0.7);
  transition: all var(--transition);
  box-shadow: 0 4px 16px rgba(0,0,0,0.4);
}
.play-icon::after {
  content: '';
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 9px 0 9px 18px;
  border-color: transparent transparent transparent var(--primary);
  margin-left: 4px;
}
.video-card:hover .play-icon {
  opacity: 1;
  transform: scale(1);
}
.video-duration {
  position: absolute;
  bottom: 8px;
  right: 8px;
  background: rgba(0,0,0,0.75);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 2px 7px;
  border-radius: 4px;
}
.video-live-badge {
  position: absolute;
  top: 8px;
  left: 8px;
  background: #e53935;
  color: #fff;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 4px;
  letter-spacing: 0.05em;
  animation: liveBlink 1.5s ease-in-out infinite;
}
@keyframes liveBlink { 0%,100%{opacity:1} 50%{opacity:.6} }
.video-info { padding: 14px; }
.video-title {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.5;
  margin-bottom: 10px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.video-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}
.video-author {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.78rem;
  color: var(--text-muted);
}
.video-author-avatar {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent2));
  flex-shrink: 0;
}
.video-stats {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}
.video-stat { font-size: 0.78rem; color: var(--text-muted); }

/* ── 功能卡片 ── */
.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 28px 22px;
  transition: all var(--transition);
}
.feature-card:hover {
  border-color: rgba(200,51,106,0.4);
  transform: translateY(-3px);
  box-shadow: var(--shadow-card), var(--shadow-glow);
}
.feature-icon {
  font-size: 2rem;
  margin-bottom: 14px;
}
.feature-title {
  font-size: 1rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 10px;
}
.feature-desc {
  font-size: 0.87rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ── 社区卡片 ── */
.community-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 24px 18px;
  text-align: center;
  transition: all var(--transition);
}
.community-card:hover {
  border-color: rgba(200,51,106,0.4);
  transform: translateY(-3px);
  box-shadow: var(--shadow-card);
}
.community-icon { font-size: 2.2rem; display: block; margin-bottom: 12px; }
.community-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
}
.community-desc {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ── AI卡片 ── */
.ai-card {
  background: linear-gradient(135deg, rgba(42,21,64,0.8), rgba(26,10,30,0.9));
  border: 1px solid rgba(200,156,240,0.2);
  border-radius: var(--radius-md);
  padding: 28px 22px;
  transition: all var(--transition);
}
.ai-card:hover {
  border-color: rgba(200,156,240,0.4);
  transform: translateY(-3px);
  box-shadow: 0 8px 32px rgba(200,156,240,0.15);
}
.ai-badge {
  display: inline-block;
  background: rgba(200,156,240,0.12);
  border: 1px solid rgba(200,156,240,0.25);
  color: var(--accent2);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 50px;
  margin-bottom: 14px;
}
.ai-title {
  font-size: 1rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 10px;
}
.ai-desc {
  font-size: 0.87rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ── 专家卡片 ── */
.expert-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all var(--transition);
}
.expert-card:hover {
  border-color: rgba(200,51,106,0.4);
  transform: translateY(-3px);
  box-shadow: var(--shadow-card), var(--shadow-glow);
}
.expert-photo {
  width: 100%;
  height: 180px;
  object-fit: cover;
}
.expert-info { padding: 18px; }
.expert-name {
  font-size: 1rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 4px;
}
.expert-role {
  font-size: 0.8rem;
  color: var(--primary-light);
  margin-bottom: 10px;
}
.expert-bio {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 12px;
}
.expert-awards { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 14px; }
.expert-actions { display: flex; gap: 8px; }

/* ── 评价卡片 ── */
.review-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 22px 18px;
  transition: all var(--transition);
}
.review-card:hover {
  border-color: rgba(200,51,106,0.3);
  transform: translateY(-2px);
}
.review-stars { color: var(--accent); font-size: 0.9rem; margin-bottom: 10px; }
.review-text {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 14px;
  font-style: italic;
}
.review-author { display: flex; align-items: center; gap: 10px; }
.review-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent2));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 700;
  color: #fff;
  flex-shrink: 0;
}
.review-name { font-size: 0.88rem; font-weight: 600; color: #fff; }
.review-date { font-size: 0.75rem; color: var(--text-faint); }

/* ── FAQ ── */
.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  overflow: hidden;
  transition: border-color var(--transition);
}
.faq-item.open { border-color: rgba(200,51,106,0.4); }
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 20px;
  cursor: pointer;
  font-size: 0.95rem;
  font-weight: 600;
  color: #fff;
  transition: color var(--transition);
}
.faq-question:hover { color: var(--primary-light); }
.faq-icon {
  font-size: 1.2rem;
  color: var(--primary);
  transition: transform var(--transition);
  flex-shrink: 0;
  margin-left: 12px;
}
.faq-item.open .faq-icon { transform: rotate(45deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  padding: 0 20px;
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.8;
  transition: max-height 0.35s ease, padding 0.35s ease;
}
.faq-item.open .faq-answer { max-height: 300px; padding: 0 20px 18px; }

/* ── 合作伙伴 ── */
.partner-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 16px;
}
.partner-logo {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 16px 12px;
  text-align: center;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
  transition: all var(--transition);
}
.partner-logo:hover {
  border-color: rgba(200,51,106,0.4);
  color: #fff;
  background: rgba(200,51,106,0.08);
}

/* ── 加入步骤 ── */
.join-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.join-step {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 24px 18px;
  text-align: center;
  position: relative;
  transition: all var(--transition);
}
.join-step:hover {
  border-color: rgba(200,51,106,0.4);
  transform: translateY(-3px);
}
.join-step-icon { font-size: 2rem; display: block; margin-bottom: 12px; }
.join-step-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
}
.join-step-desc { font-size: 0.82rem; color: var(--text-muted); line-height: 1.6; }

/* ── 联系卡片 ── */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 16px;
}
.contact-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 20px 16px;
  text-align: center;
  transition: all var(--transition);
}
.contact-card:hover {
  border-color: rgba(200,51,106,0.4);
  transform: translateY(-2px);
}
.contact-icon { font-size: 1.8rem; margin-bottom: 8px; }
.contact-label { font-size: 0.78rem; color: var(--text-muted); margin-bottom: 6px; }
.contact-value { font-size: 0.88rem; font-weight: 600; color: #fff; word-break: break-all; }

/* ── 筛选栏 ── */
.filter-bar {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 28px;
}
.filter-btn {
  padding: 7px 16px;
  border-radius: 50px;
  font-size: 0.82rem;
  font-weight: 500;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-muted);
  transition: all var(--transition);
}
.filter-btn:hover, .filter-btn.active {
  background: rgba(200,51,106,0.15);
  border-color: var(--primary);
  color: var(--primary-light);
}

/* ── 面包屑 ── */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 0;
  font-size: 0.82rem;
}
.breadcrumb-item { color: var(--text-muted); }
.breadcrumb-item a { color: var(--text-muted); }
.breadcrumb-item a:hover { color: var(--primary-light); }
.breadcrumb-item + .breadcrumb-item::before {
  content: '›';
  margin-right: 8px;
  color: var(--text-faint);
}
.breadcrumb-item.active { color: var(--primary-light); }

/* ── 页面Hero（内页） ── */
.page-hero {
  background: linear-gradient(135deg, var(--bg-deep) 0%, rgba(139,26,74,0.2) 100%);
  padding: 60px 0 48px;
  border-bottom: 1px solid var(--border);
}
.page-hero-title {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 800;
  color: #fff;
  margin: 14px 0 16px;
  line-height: 1.25;
}
.page-hero-desc {
  font-size: 0.95rem;
  color: var(--text-muted);
  max-width: 680px;
  line-height: 1.8;
}

/* ── 二维码 ── */
.qr-grid { display: flex; gap: 16px; margin-top: 16px; }
.qr-item { text-align: center; }
.qr-item img { width: 80px; height: 80px; border-radius: 8px; border: 1px solid var(--border); }
.qr-label { font-size: 0.72rem; color: var(--text-faint); margin-top: 6px; }

/* ── 社交分享 ── */
.social-share { display: flex; gap: 10px; flex-wrap: wrap; }
.share-btn {
  padding: 6px 14px;
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 600;
  border: 1px solid var(--border);
  color: var(--text-muted);
  background: var(--bg-card);
  transition: all var(--transition);
  cursor: pointer;
}
.share-btn:hover { border-color: var(--primary); color: var(--primary-light); }

/* ── 视频弹窗 ── */
.video-modal {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.85);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(8px);
}
.video-modal.show { display: flex; }
.video-modal-inner {
  background: var(--bg-card);
  border: 1px solid rgba(200,51,106,0.3);
  border-radius: var(--radius-lg);
  padding: 40px 36px;
  max-width: 480px;
  width: 90%;
  text-align: center;
  box-shadow: 0 24px 64px rgba(0,0,0,0.6);
  animation: modalIn 0.3s ease;
}
@keyframes modalIn { from{opacity:0;transform:scale(.9) translateY(20px)} to{opacity:1;transform:scale(1) translateY(0)} }
.video-modal-close {
  position: absolute;
  top: 16px;
  right: 20px;
  font-size: 1.2rem;
  color: var(--text-muted);
  cursor: pointer;
  transition: color var(--transition);
}
.video-modal-close:hover { color: #fff; }
.video-modal-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 12px;
}
.video-modal p { font-size: 0.88rem; color: var(--text-muted); line-height: 1.7; margin-bottom: 20px; }

/* ── Toast ── */
.toast {
  position: fixed;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: rgba(26,10,30,0.95);
  border: 1px solid rgba(200,51,106,0.4);
  color: #fff;
  padding: 12px 24px;
  border-radius: 50px;
  font-size: 0.88rem;
  opacity: 0;
  pointer-events: none;
  transition: all 0.3s ease;
  z-index: 2000;
  white-space: nowrap;
  box-shadow: 0 8px 24px rgba(0,0,0,0.4);
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ── 页脚 ── */
.site-footer {
  background: var(--bg-deep);
  border-top: 1px solid var(--border);
  padding: 60px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-brand { max-width: 280px; }
.site-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
  color: #fff;
}
.footer-desc {
  font-size: 0.83rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 16px;
}
.footer-heading {
  font-size: 0.9rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}
.footer-links li { margin-bottom: 8px; }
.footer-links a {
  font-size: 0.83rem;
  color: var(--text-muted);
  transition: color var(--transition);
}
.footer-links a:hover { color: var(--primary-light); }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 0.8rem;
  color: var(--text-faint);
}
.footer-bottom a { color: var(--text-faint); }
.footer-bottom a:hover { color: var(--primary-light); }

/* ── 关于页面自适应 ── */
.about-grid { }

/* ── 响应式 ── */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .join-steps { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .hero-section > .container { grid-template-columns: 1fr !important; }
  .hero-right { display: none; }
  .nav-menu { display: none; flex-direction: column; position: fixed; top: 0; left: 0; right: 0; bottom: 0; background: rgba(15,6,23,0.98); z-index: 500; padding: 80px 24px 24px; gap: 8px; }
  .nav-menu.open { display: flex; }
  .nav-link { padding: 12px 16px; font-size: 1rem; }
  .nav-toggle { display: flex; }
  .nav-search-wrap { display: none; }
  .grid-3 { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: 1fr 1fr; }
  .join-steps { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-brand { max-width: 100%; }
  .video-grid { grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); }
  .hero-stats { gap: 20px; }
  .section { padding: 56px 0; }
  .about-grid { grid-template-columns: 1fr !important; }
  .contact-grid { grid-template-columns: repeat(2, 1fr); }
  .partner-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 480px) {
  .grid-4 { grid-template-columns: 1fr; }
  .join-steps { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; }
  .video-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .partner-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-bottom { flex-direction: column; text-align: center; }
  .filter-bar { gap: 6px; }
  .filter-btn { padding: 5px 12px; font-size: 0.78rem; }
}