/* =============================================
   红桃视频 - 主样式文件
   现代活力 · 科技未来感 · 沉浸式体验
   ============================================= */

/* === CSS变量 === */
:root {
  --primary: #e8192c;
  --primary-dark: #b5101e;
  --primary-light: #ff4d5e;
  --secondary: #1a1a2e;
  --accent: #ff6b35;
  --bg-dark: #0d0d1a;
  --bg-card: #16213e;
  --bg-light: #f8f9ff;
  --text-primary: #ffffff;
  --text-secondary: #b0b8d4;
  --text-dark: #1a1a2e;
  --border: rgba(255,255,255,0.08);
  --shadow: 0 8px 32px rgba(232,25,44,0.15);
  --radius: 12px;
  --radius-lg: 20px;
  --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
  --font: 'PingFang SC','Microsoft YaHei','Helvetica Neue',sans-serif;
}

/* === 重置与基础 === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font);
  background: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }

/* === 滚动条美化 === */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-dark); }
::-webkit-scrollbar-thumb { background: var(--primary); border-radius: 3px; }

/* === 通用容器 === */
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.section { padding: 80px 0; }
.section-light { background: var(--bg-light); color: var(--text-dark); }
.section-card { background: var(--bg-card); }

/* === 标题样式 === */
.section-title {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 800;
  text-align: center;
  margin-bottom: 16px;
  background: linear-gradient(135deg, #fff 0%, var(--primary-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.section-title.dark {
  background: linear-gradient(135deg, var(--text-dark) 0%, var(--primary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.section-subtitle {
  text-align: center;
  color: var(--text-secondary);
  font-size: 1.05rem;
  margin-bottom: 56px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}
.section-subtitle.dark { color: #666; }

/* === 按钮 === */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 50px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  text-decoration: none;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  color: #fff;
  box-shadow: 0 4px 20px rgba(232,25,44,0.4);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(232,25,44,0.5);
}
.btn-outline {
  background: transparent;
  color: #fff;
  border: 2px solid rgba(255,255,255,0.4);
}
.btn-outline:hover {
  background: rgba(255,255,255,0.1);
  border-color: #fff;
  transform: translateY(-2px);
}
.btn-sm { padding: 10px 24px; font-size: 0.9rem; }

/* === 顶部导航 === */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 0 20px;
  background: rgba(13,13,26,0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}
.navbar.scrolled {
  background: rgba(13,13,26,0.98);
  box-shadow: 0 2px 20px rgba(0,0,0,0.3);
}
.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.3rem;
  font-weight: 800;
}
.nav-logo img {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  object-fit: cover;
}
.logo-text { color: var(--primary); }
.nav-menu {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-menu a {
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 0.95rem;
  color: var(--text-secondary);
  transition: var(--transition);
  white-space: nowrap;
}
.nav-menu a:hover, .nav-menu a.active {
  color: #fff;
  background: rgba(232,25,44,0.15);
}
.nav-actions { display: flex; align-items: center; gap: 12px; }
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
}
.nav-toggle span {
  width: 24px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: var(--transition);
}

/* === 搜索框 === */
.search-bar-wrap {
  background: rgba(22,33,62,0.9);
  border-bottom: 1px solid var(--border);
  padding: 12px 20px;
  position: fixed;
  top: 68px;
  left: 0;
  right: 0;
  z-index: 999;
}
.search-bar-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 12px;
}
.search-input-wrap {
  flex: 1;
  position: relative;
}
.search-input {
  width: 100%;
  padding: 10px 48px 10px 20px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 50px;
  color: #fff;
  font-size: 0.95rem;
  font-family: var(--font);
  outline: none;
  transition: var(--transition);
}
.search-input::placeholder { color: var(--text-secondary); }
.search-input:focus {
  border-color: var(--primary);
  background: rgba(232,25,44,0.05);
}
.search-icon {
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition);
}
.search-icon:hover { color: var(--primary); }
.search-hot-tags { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.search-hot-tags span { color: var(--text-secondary); font-size: 0.85rem; white-space: nowrap; }
.hot-tag {
  padding: 4px 12px;
  background: rgba(232,25,44,0.12);
  border: 1px solid rgba(232,25,44,0.25);
  border-radius: 20px;
  font-size: 0.82rem;
  color: var(--primary-light);
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}
.hot-tag:hover { background: rgba(232,25,44,0.25); }

/* === 首屏Banner === */
.hero {
  min-height: 100vh;
  position: relative;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-top: 120px;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('../images/banner-bg.jpg');
  background-size: cover;
  background-position: center;
  filter: brightness(0.4);
  transform: scale(1.05);
  animation: heroZoom 20s ease-in-out infinite alternate;
}
@keyframes heroZoom {
  from { transform: scale(1.05); }
  to { transform: scale(1.12); }
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(13,13,26,0.8) 0%, rgba(232,25,44,0.15) 50%, rgba(13,13,26,0.9) 100%);
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: rgba(232,25,44,0.15);
  border: 1px solid rgba(232,25,44,0.35);
  border-radius: 50px;
  font-size: 0.85rem;
  color: var(--primary-light);
  margin-bottom: 24px;
  animation: fadeInDown 0.8s ease;
}
.badge-dot {
  width: 8px;
  height: 8px;
  background: var(--primary);
  border-radius: 50%;
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(1.3); }
}
.hero-title {
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  font-weight: 900;
  line-height: 1.15;
  margin-bottom: 20px;
  animation: fadeInUp 0.8s ease 0.2s both;
}
.hero-title .highlight {
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-desc {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 36px;
  line-height: 1.8;
  animation: fadeInUp 0.8s ease 0.4s both;
}
.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  animation: fadeInUp 0.8s ease 0.6s both;
}
.hero-stats {
  display: flex;
  gap: 32px;
  margin-top: 48px;
  animation: fadeInUp 0.8s ease 0.8s both;
}
.stat-item { text-align: center; }
.stat-num {
  font-size: 2rem;
  font-weight: 800;
  color: var(--primary-light);
  display: block;
}
.stat-label { font-size: 0.85rem; color: var(--text-secondary); }
.hero-visual {
  position: relative;
  animation: fadeInRight 1s ease 0.3s both;
}
.hero-video-card {
  background: rgba(22,33,62,0.8);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  backdrop-filter: blur(10px);
  box-shadow: 0 20px 60px rgba(0,0,0,0.5);
}
.hero-video-card img {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
}
.hero-video-info {
  padding: 16px 20px;
}
.hero-video-info h3 { font-size: 1rem; margin-bottom: 6px; }
.hero-video-meta { display: flex; gap: 16px; font-size: 0.82rem; color: var(--text-secondary); }
.floating-badge {
  position: absolute;
  background: rgba(232,25,44,0.9);
  backdrop-filter: blur(10px);
  border-radius: 12px;
  padding: 10px 16px;
  font-size: 0.85rem;
  font-weight: 600;
  box-shadow: 0 8px 24px rgba(232,25,44,0.3);
  animation: float 3s ease-in-out infinite;
}
.floating-badge.top-right { top: -16px; right: 20px; }
.floating-badge.bottom-left { bottom: 60px; left: -20px; }
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

/* === 视频卡片网格 === */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}
.video-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: var(--transition);
  cursor: pointer;
}
.video-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow);
  border-color: rgba(232,25,44,0.3);
}
.video-thumb {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
}
.video-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.video-card:hover .video-thumb img { transform: scale(1.08); }
.play-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: var(--transition);
}
.video-card:hover .play-overlay { opacity: 1; }
.play-btn {
  width: 56px;
  height: 56px;
  background: rgba(232,25,44,0.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transform: scale(0.8);
  transition: var(--transition);
  box-shadow: 0 4px 20px rgba(232,25,44,0.5);
}
.video-card:hover .play-btn { transform: scale(1); }
.play-btn svg { width: 22px; height: 22px; fill: #fff; margin-left: 3px; }
.video-duration {
  position: absolute;
  bottom: 8px;
  right: 8px;
  background: rgba(0,0,0,0.8);
  color: #fff;
  font-size: 0.78rem;
  padding: 2px 8px;
  border-radius: 4px;
}
.video-info { padding: 16px; }
.video-title {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 8px;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.video-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.82rem;
  color: var(--text-secondary);
}
.video-tags { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 8px; }
.video-tag {
  padding: 2px 10px;
  background: rgba(232,25,44,0.1);
  border: 1px solid rgba(232,25,44,0.2);
  border-radius: 20px;
  font-size: 0.75rem;
  color: var(--primary-light);
}

/* === 品牌故事 === */
.story-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.story-img {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0,0,0,0.4);
}
.story-img img { width: 100%; aspect-ratio: 4/3; object-fit: cover; }
.story-content h2 {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 800;
  margin-bottom: 20px;
  line-height: 1.3;
}
.story-content h2 span { color: var(--primary); }
.story-content p { color: var(--text-secondary); margin-bottom: 16px; line-height: 1.8; }
.story-values { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 32px; }
.value-item {
  padding: 20px;
  background: rgba(232,25,44,0.06);
  border: 1px solid rgba(232,25,44,0.15);
  border-radius: var(--radius);
  transition: var(--transition);
}
.value-item:hover { background: rgba(232,25,44,0.1); transform: translateY(-2px); }
.value-icon { font-size: 1.8rem; margin-bottom: 8px; }
.value-title { font-weight: 700; margin-bottom: 4px; }
.value-desc { font-size: 0.85rem; color: var(--text-secondary); }

/* === 品牌探索 - 服务卡片 === */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.service-card {
  padding: 36px 28px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  text-align: center;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  transform: scaleX(0);
  transition: var(--transition);
}
.service-card:hover::before { transform: scaleX(1); }
.service-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow);
  border-color: rgba(232,25,44,0.2);
}
.service-icon {
  width: 72px;
  height: 72px;
  background: linear-gradient(135deg, rgba(232,25,44,0.15), rgba(255,107,53,0.1));
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  font-size: 2rem;
  transition: var(--transition);
}
.service-card:hover .service-icon {
  background: linear-gradient(135deg, rgba(232,25,44,0.25), rgba(255,107,53,0.2));
  transform: scale(1.1);
}
.service-title { font-size: 1.15rem; font-weight: 700; margin-bottom: 12px; }
.service-desc { color: var(--text-secondary); font-size: 0.92rem; line-height: 1.7; }
.service-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--primary-light);
  font-size: 0.88rem;
  font-weight: 600;
  margin-top: 16px;
  transition: var(--transition);
}
.service-link:hover { gap: 10px; }

/* === 品牌创造 - 案例 === */
.cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.case-card {
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
  aspect-ratio: 4/3;
  cursor: pointer;
}
.case-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.case-card:hover img { transform: scale(1.08); }
.case-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(13,13,26,0.95) 0%, transparent 60%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 24px;
  transform: translateY(20px);
  opacity: 0.8;
  transition: var(--transition);
}
.case-card:hover .case-overlay { transform: translateY(0); opacity: 1; }
.case-tag {
  display: inline-block;
  padding: 4px 12px;
  background: var(--primary);
  border-radius: 20px;
  font-size: 0.78rem;
  font-weight: 600;
  margin-bottom: 10px;
  width: fit-content;
}
.case-title { font-size: 1.05rem; font-weight: 700; margin-bottom: 6px; }
.case-desc { font-size: 0.85rem; color: var(--text-secondary); }

/* === 品牌灵感 === */
.inspire-section {
  position: relative;
  overflow: hidden;
}
.inspire-bg {
  position: absolute;
  inset: 0;
  background-image: url('../images/inspire-bg.jpg');
  background-size: cover;
  background-position: center;
  filter: brightness(0.2);
}
.inspire-content { position: relative; z-index: 2; }
.inspire-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.inspire-card {
  background: rgba(22,33,62,0.7);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  transition: var(--transition);
}
.inspire-card:hover {
  background: rgba(22,33,62,0.9);
  transform: translateY(-4px);
  border-color: rgba(232,25,44,0.3);
}
.inspire-num {
  font-size: 3rem;
  font-weight: 900;
  color: rgba(232,25,44,0.2);
  line-height: 1;
  margin-bottom: 16px;
}
.inspire-title { font-size: 1.1rem; font-weight: 700; margin-bottom: 12px; }
.inspire-text { color: var(--text-secondary); font-size: 0.9rem; line-height: 1.7; }

/* === 用户评价 === */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}
.review-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.06);
  transition: var(--transition);
  border: 1px solid #f0f0f0;
}
.review-card:hover { transform: translateY(-4px); box-shadow: 0 12px 40px rgba(0,0,0,0.1); }
.review-stars { color: #ffd700; font-size: 1.1rem; margin-bottom: 14px; }
.review-text {
  color: #444;
  font-size: 0.95rem;
  line-height: 1.7;
  margin-bottom: 20px;
  font-style: italic;
}
.review-text::before { content: '"'; color: var(--primary); font-size: 1.5rem; }
.review-author { display: flex; align-items: center; gap: 12px; }
.review-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: #fff;
  font-size: 1rem;
  flex-shrink: 0;
}
.review-name { font-weight: 700; color: var(--text-dark); font-size: 0.95rem; }
.review-meta { font-size: 0.8rem; color: #999; }

/* === FAQ === */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 12px;
  overflow: hidden;
  transition: var(--transition);
}
.faq-item.active { border-color: rgba(232,25,44,0.3); }
.faq-question {
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  font-weight: 600;
  font-size: 1rem;
  transition: var(--transition);
  user-select: none;
}
.faq-question:hover { color: var(--primary-light); }
.faq-icon {
  width: 28px;
  height: 28px;
  background: rgba(232,25,44,0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: var(--transition);
  color: var(--primary);
  font-size: 1.2rem;
  font-weight: 300;
}
.faq-item.active .faq-icon { transform: rotate(45deg); background: var(--primary); color: #fff; }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}
.faq-item.active .faq-answer { max-height: 200px; }
.faq-answer-inner {
  padding: 0 24px 20px;
  color: var(--text-secondary);
  line-height: 1.8;
  font-size: 0.95rem;
}

/* === 品牌连接 === */
.connect-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}
.connect-form {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px;
}
.form-title { font-size: 1.4rem; font-weight: 700; margin-bottom: 24px; }
.form-group { margin-bottom: 20px; }
.form-label { display: block; font-size: 0.9rem; color: var(--text-secondary); margin-bottom: 8px; }
.form-input, .form-textarea {
  width: 100%;
  padding: 12px 16px;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: #fff;
  font-size: 0.95rem;
  font-family: var(--font);
  outline: none;
  transition: var(--transition);
}
.form-input:focus, .form-textarea:focus {
  border-color: var(--primary);
  background: rgba(232,25,44,0.05);
}
.form-textarea { min-height: 120px; resize: vertical; }
.connect-info h3 { font-size: 1.4rem; font-weight: 700; margin-bottom: 24px; }
.info-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 24px;
  padding: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.info-icon {
  width: 44px;
  height: 44px;
  background: rgba(232,25,44,0.1);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  flex-shrink: 0;
}
.info-label { font-size: 0.85rem; color: var(--text-secondary); margin-bottom: 4px; }
.info-value { font-weight: 600; }

/* === 页脚 === */
.footer {
  background: #080810;
  border-top: 1px solid var(--border);
  padding: 60px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}
.footer-brand .nav-logo { margin-bottom: 16px; }
.footer-desc { color: var(--text-secondary); font-size: 0.9rem; line-height: 1.8; margin-bottom: 24px; }
.footer-social { display: flex; gap: 12px; }
.social-btn {
  width: 40px;
  height: 40px;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--border);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  transition: var(--transition);
  cursor: pointer;
}
.social-btn:hover { background: var(--primary); border-color: var(--primary); }
.footer-title { font-weight: 700; margin-bottom: 20px; font-size: 1rem; }
.footer-links { display: flex; flex-direction: column; gap: 10px; }
.footer-links a { color: var(--text-secondary); font-size: 0.9rem; transition: var(--transition); }
.footer-links a:hover { color: var(--primary-light); padding-left: 4px; }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 24px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}
.footer-copy { color: var(--text-secondary); font-size: 0.85rem; }
.footer-copy a { color: var(--primary-light); }
.footer-icp { color: var(--text-secondary); font-size: 0.82rem; }
.footer-qr { display: flex; gap: 24px; }
.qr-item { text-align: center; }
.qr-box {
  width: 80px;
  height: 80px;
  background: #fff;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 6px;
  font-size: 0.65rem;
  color: #333;
  padding: 8px;
}
.qr-label { font-size: 0.78rem; color: var(--text-secondary); }

/* === 信任徽章 === */
.trust-bar {
  background: rgba(22,33,62,0.5);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 20px 0;
}
.trust-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 48px;
  flex-wrap: wrap;
}
.trust-item {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-secondary);
  font-size: 0.9rem;
}
.trust-icon { font-size: 1.4rem; color: var(--primary); }

/* === 动画 === */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-20px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeInRight {
  from { opacity: 0; transform: translateX(40px); }
  to { opacity: 1; transform: translateX(0); }
}
.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

/* === 分隔线 === */
.divider {
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  border-radius: 2px;
  margin: 0 auto 24px;
}

/* === 标签页 === */
.tabs {
  display: flex;
  gap: 8px;
  justify-content: center;
  margin-bottom: 40px;
  flex-wrap: wrap;
}
.tab-btn {
  padding: 10px 24px;
  border-radius: 50px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-secondary);
  font-size: 0.9rem;
  cursor: pointer;
  transition: var(--transition);
  font-family: var(--font);
}
.tab-btn.active, .tab-btn:hover {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

/* === 合作伙伴 === */
.partners-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 40px;
  flex-wrap: wrap;
}
.partner-badge {
  padding: 12px 24px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 600;
  transition: var(--transition);
}
.partner-badge:hover { background: rgba(232,25,44,0.08); border-color: rgba(232,25,44,0.2); color: #fff; }

/* === 响应式 === */
@media (max-width: 1024px) {
  .hero-content { grid-template-columns: 1fr; gap: 40px; }
  .hero-visual { display: none; }
  .story-grid { grid-template-columns: 1fr; }
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .cases-grid { grid-template-columns: repeat(2, 1fr); }
  .inspire-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .connect-grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .section { padding: 60px 0; }
  .nav-menu { display: none; position: fixed; top: 68px; left: 0; right: 0; background: rgba(13,13,26,0.98); flex-direction: column; padding: 20px; gap: 4px; border-bottom: 1px solid var(--border); }
  .nav-menu.open { display: flex; }
  .nav-toggle { display: flex; }
  .nav-actions .btn { display: none; }
  .services-grid { grid-template-columns: 1fr; }
  .cases-grid { grid-template-columns: 1fr; }
  .inspire-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero-stats { gap: 20px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .trust-inner { gap: 24px; }
  .search-hot-tags { display: none; }
}
@media (max-width: 480px) {
  .hero-title { font-size: 1.9rem; }
  .hero-actions { flex-direction: column; }
  .story-values { grid-template-columns: 1fr; }
  .video-grid { grid-template-columns: 1fr; }
}

/* === 内页通用 === */
.page-hero {
  padding: 140px 0 80px;
  background: linear-gradient(135deg, var(--bg-dark) 0%, var(--bg-card) 100%);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at 50% 50%, rgba(232,25,44,0.08) 0%, transparent 60%);
  animation: rotateBg 20s linear infinite;
}
@keyframes rotateBg {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}
.page-hero h1 { position: relative; z-index: 1; }
.page-hero p { position: relative; z-index: 1; color: var(--text-secondary); max-width: 600px; margin: 16px auto 0; }
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-secondary);
  position: relative;
  z-index: 1;
  justify-content: center;
  margin-bottom: 16px;
}
.breadcrumb a { color: var(--primary-light); }
.breadcrumb span { color: var(--text-secondary); }