/* ===================================================
   51视频 - 主样式表
   品牌：51视频 | 域名：lz919713.cn
   原创配色：深紫 #6B3FA0 | 亮粉 #FF6B9D | 天蓝 #00D4FF
   背景：#0F0F1E | 文字：#E8E8E8 | 强调：#FFD700
   =================================================== */

/* ===== CSS变量 ===== */
:root {
  --primary: #6B3FA0;
  --primary-light: #8B5EC0;
  --primary-dark: #4A2A7A;
  --accent-pink: #FF6B9D;
  --accent-blue: #00D4FF;
  --accent-gold: #FFD700;
  --bg-dark: #0F0F1E;
  --bg-card: #1A1A2E;
  --bg-card2: #16213E;
  --text-main: #E8E8E8;
  --text-muted: #A0A0B8;
  --text-light: #C8C8D8;
  --border: rgba(107,63,160,0.3);
  --border-light: rgba(255,255,255,0.08);
  --shadow: 0 8px 32px rgba(107,63,160,0.25);
  --shadow-hover: 0 16px 48px rgba(107,63,160,0.45);
  --radius: 12px;
  --radius-lg: 20px;
  --transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
  --header-h: 64px;
  --search-h: 52px;
}

/* ===== 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: -apple-system, "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
  background: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.7;
  overflow-x: hidden;
}
a { color: var(--accent-blue); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--accent-pink); }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
input, textarea, select { font-family: inherit; }

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

/* ===== 通用按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 50px;
  font-size: 0.95rem;
  font-weight: 600;
  transition: var(--transition);
  cursor: pointer;
  border: 2px solid transparent;
  text-decoration: none;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--accent-pink));
  color: #fff;
  border-color: transparent;
}
.btn-primary:hover {
  background: linear-gradient(135deg, var(--primary-light), var(--accent-pink));
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(255,107,157,0.4);
}
.btn-outline {
  background: transparent;
  color: var(--text-main);
  border-color: var(--border);
}
.btn-outline:hover {
  background: rgba(107,63,160,0.2);
  border-color: var(--primary);
  color: var(--accent-blue);
  transform: translateY(-2px);
}
.btn-sm {
  padding: 8px 18px;
  font-size: 0.85rem;
}

/* ===== 头部导航 ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(15,15,30,0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-h);
  gap: 24px;
}
.logo-img {
  height: 44px;
  width: auto;
  object-fit: contain;
}
.main-nav ul {
  display: flex;
  gap: 4px;
  align-items: center;
}
.nav-link {
  display: block;
  padding: 8px 14px;
  color: var(--text-light);
  font-size: 0.9rem;
  font-weight: 500;
  border-radius: 8px;
  transition: var(--transition);
  white-space: nowrap;
}
.nav-link:hover, .nav-link.active {
  color: var(--accent-blue);
  background: rgba(0,212,255,0.08);
}
.nav-link.active {
  color: var(--accent-pink);
  background: rgba(255,107,157,0.1);
}
.menu-toggle {
  display: none;
  font-size: 1.5rem;
  color: var(--text-main);
  padding: 8px;
}

/* ===== 搜索框 ===== */
.search-bar-wrap {
  background: rgba(26,26,46,0.9);
  border-bottom: 1px solid var(--border-light);
  padding: 8px 0;
}
.search-form {
  display: flex;
  align-items: center;
  gap: 0;
  max-width: 600px;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border);
  border-radius: 50px;
  overflow: hidden;
  transition: var(--transition);
}
.search-form:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(107,63,160,0.2);
}
.search-input {
  flex: 1;
  padding: 10px 20px;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text-main);
  font-size: 0.9rem;
}
.search-input::placeholder { color: var(--text-muted); }
.search-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 20px;
  background: linear-gradient(135deg, var(--primary), var(--accent-pink));
  color: #fff;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: 0 50px 50px 0;
  transition: var(--transition);
  white-space: nowrap;
}
.search-btn:hover { opacity: 0.9; }

/* ===== 面包屑 ===== */
.breadcrumb-nav { padding: 10px 0; }
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-muted);
}
.breadcrumb li { display: flex; align-items: center; gap: 8px; }
.breadcrumb li:not(:last-child)::after { content: "›"; color: var(--text-muted); }
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--accent-blue); }
.breadcrumb .active { color: var(--text-main); }

/* ===== 英雄区 ===== */
.hero-section {
  position: relative;
  min-height: 560px;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero-bg-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(15,15,30,0.88) 0%, rgba(107,63,160,0.45) 50%, rgba(15,15,30,0.75) 100%);
}
.hero-content {
  position: relative;
  z-index: 1;
  padding: 60px 20px;
  max-width: 800px;
}
.hero-badge {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(107,63,160,0.3);
  border: 1px solid var(--primary);
  border-radius: 50px;
  font-size: 0.85rem;
  color: var(--accent-blue);
  margin-bottom: 20px;
  letter-spacing: 2px;
}
.hero-title {
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 16px;
  background: linear-gradient(135deg, #fff, var(--accent-blue), var(--accent-pink));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-subtitle {
  font-size: 1.05rem;
  color: var(--text-light);
  margin-bottom: 32px;
  max-width: 600px;
}
.hero-stats {
  display: flex;
  gap: 32px;
  margin-bottom: 36px;
  flex-wrap: wrap;
}
.stat-item { display: flex; flex-direction: column; gap: 4px; }
.stat-num {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent-gold);
}
.stat-label { font-size: 0.8rem; color: var(--text-muted); }
.hero-btns { display: flex; gap: 16px; flex-wrap: wrap; }

/* ===== 通用Section ===== */
.section {
  padding: 72px 0;
}
.section-header {
  text-align: center;
  margin-bottom: 48px;
}
.section-title {
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 700;
  margin-bottom: 12px;
  background: linear-gradient(135deg, var(--text-main), var(--accent-blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.section-desc {
  color: var(--text-muted);
  font-size: 1rem;
  max-width: 600px;
  margin: 0 auto 16px;
}
.section-more {
  color: var(--accent-pink);
  font-size: 0.9rem;
  font-weight: 600;
}
.section-more:hover { color: var(--accent-blue); }
.sub-section-title {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text-main);
  margin: 48px 0 24px;
  padding-left: 16px;
  border-left: 4px solid var(--accent-pink);
}

/* ===== 功能卡片 ===== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}
.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent-pink));
  transform: scaleX(0);
  transition: var(--transition);
}
.feature-card:hover::before { transform: scaleX(1); }
.feature-card:hover {
  border-color: var(--primary);
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
}
.feature-icon {
  font-size: 2.5rem;
  margin-bottom: 16px;
  display: block;
}
.feature-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-main);
}
.feature-card p {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 16px;
  line-height: 1.6;
}
.feature-list {
  margin-bottom: 20px;
}
.feature-list li {
  font-size: 0.85rem;
  color: var(--text-light);
  padding: 4px 0;
  padding-left: 16px;
  position: relative;
}
.feature-list li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--accent-pink);
}
.feature-link {
  color: var(--accent-blue);
  font-size: 0.9rem;
  font-weight: 600;
}
.feature-link:hover { color: var(--accent-pink); }

/* ===== 视频卡片 ===== */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}
.video-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
  cursor: pointer;
}
.video-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
  border-color: var(--primary);
}
.video-thumb {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
}
.video-thumb-bg {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}
.video-thumb-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
  display: block;
}
.video-card:hover .video-thumb-img { transform: scale(1.05); }
.thumb-icon {
  font-size: 3rem;
  opacity: 0.6;
  transition: var(--transition);
}
.video-card:hover .thumb-icon { opacity: 0.3; transform: scale(1.1); }
.play-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0.3);
  opacity: 0;
  transition: var(--transition);
}
.video-card:hover .play-overlay { opacity: 1; }
.play-btn-circle {
  width: 60px;
  height: 60px;
  background: rgba(107,63,160,0.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 3px solid rgba(255,255,255,0.3);
  transition: var(--transition);
  transform: scale(0.8);
}
.video-card:hover .play-btn-circle {
  transform: scale(1);
  background: var(--primary);
  box-shadow: 0 0 24px rgba(107,63,160,0.6);
}
.video-tag {
  position: absolute;
  top: 10px;
  left: 10px;
  background: rgba(107,63,160,0.85);
  color: #fff;
  font-size: 0.75rem;
  padding: 3px 10px;
  border-radius: 50px;
  backdrop-filter: blur(4px);
}
.video-duration {
  position: absolute;
  bottom: 10px;
  right: 10px;
  background: rgba(0,0,0,0.7);
  color: #fff;
  font-size: 0.75rem;
  padding: 2px 8px;
  border-radius: 4px;
}
.video-info { padding: 16px; }
.video-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 8px;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.video-desc {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 12px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.video-meta {
  display: flex;
  gap: 12px;
  font-size: 0.8rem;
  color: var(--text-muted);
}
.load-more-wrap {
  text-align: center;
  margin-top: 40px;
}

/* ===== 动漫Banner ===== */
.anime-section { background: linear-gradient(180deg, var(--bg-dark) 0%, rgba(107,63,160,0.05) 50%, var(--bg-dark) 100%); }
.anime-banner-wrap {
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 40px;
  box-shadow: var(--shadow);
}
.anime-banner-img { width: 100%; height: auto; }

/* ===== AI版块 ===== */
.ai-section { background: var(--bg-card2); }
.ai-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
}
.ai-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  text-align: center;
  transition: var(--transition);
}
.ai-card:hover {
  border-color: var(--accent-blue);
  transform: translateY(-4px);
  box-shadow: 0 12px 36px rgba(0,212,255,0.2);
}
.ai-icon { font-size: 2.5rem; margin-bottom: 16px; display: block; }
.ai-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-main);
}
.ai-card p { color: var(--text-muted); font-size: 0.88rem; margin-bottom: 16px; }
.ai-stats { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.ai-stat {
  font-size: 0.8rem;
  color: var(--text-muted);
  background: rgba(0,212,255,0.08);
  padding: 4px 12px;
  border-radius: 50px;
  border: 1px solid rgba(0,212,255,0.2);
}
.ai-stat strong { color: var(--accent-blue); }

/* ===== 专家团队 ===== */
.experts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
}
.expert-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: flex;
  gap: 20px;
  transition: var(--transition);
}
.expert-card:hover {
  border-color: var(--primary);
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}
.expert-avatar img {
  width: 90px;
  height: 90px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--primary);
  flex-shrink: 0;
}
.expert-name {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 4px;
}
.expert-title {
  font-size: 0.82rem;
  color: var(--accent-pink);
  display: block;
  margin-bottom: 10px;
}
.expert-bio {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 12px;
  line-height: 1.6;
}
.expert-tags { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 10px; }
.tag {
  font-size: 0.75rem;
  padding: 3px 10px;
  background: rgba(107,63,160,0.2);
  border: 1px solid var(--border);
  border-radius: 50px;
  color: var(--text-light);
}
.expert-awards {
  font-size: 0.8rem;
  color: var(--accent-gold);
  margin-bottom: 14px;
}
.expert-btns { display: flex; gap: 8px; flex-wrap: wrap; }

/* ===== 合作品牌 ===== */
.partners-section { background: var(--bg-card2); }
.partners-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 16px;
  margin-bottom: 48px;
}
.partner-logo {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 16px;
  text-align: center;
  transition: var(--transition);
}
.partner-logo:hover {
  border-color: var(--primary);
  transform: translateY(-3px);
}
.partner-name {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-muted);
  letter-spacing: 1px;
}

/* ===== 加入指南 ===== */
.join-guide {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px;
}
.join-title {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 32px;
  text-align: center;
}
.join-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
}
.join-step {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}
.step-num {
  font-size: 2rem;
  font-weight: 800;
  color: var(--primary);
  opacity: 0.5;
  flex-shrink: 0;
  line-height: 1;
}
.step-content h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 6px;
}
.step-content p { font-size: 0.85rem; color: var(--text-muted); }

/* ===== 社区版块 ===== */
.community-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}
.community-img-wrap { border-radius: var(--radius-lg); overflow: hidden; }
.community-img { width: 100%; height: auto; }
.community-features { display: flex; flex-direction: column; gap: 20px; }
.comm-feature {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 20px;
  transition: var(--transition);
}
.comm-feature:hover { border-color: var(--primary); }
.comm-icon { font-size: 1.8rem; flex-shrink: 0; }
.comm-feature h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 4px;
}
.comm-feature p { font-size: 0.85rem; color: var(--text-muted); }

/* ===== 用户评价 ===== */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
}
.review-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: var(--transition);
}
.review-card:hover {
  border-color: var(--primary);
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}
.review-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}
.reviewer-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  font-weight: 700;
  color: #fff;
  flex-shrink: 0;
}
.reviewer-info { flex: 1; }
.reviewer-name {
  display: block;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-main);
}
.reviewer-tag {
  font-size: 0.78rem;
  color: var(--text-muted);
}
.review-stars { color: var(--accent-gold); font-size: 0.9rem; }
.review-text {
  font-size: 0.88rem;
  color: var(--text-light);
  line-height: 1.7;
  margin-bottom: 12px;
}
.review-date { font-size: 0.78rem; color: var(--text-muted); }

/* ===== FAQ ===== */
.faq-section { background: var(--bg-card2); }
.faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
}
.faq-item:hover { border-color: var(--primary); }
.faq-question {
  width: 100%;
  text-align: left;
  padding: 18px 24px;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-main);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  transition: var(--transition);
}
.faq-question:hover { color: var(--accent-blue); }
.faq-arrow { transition: var(--transition); flex-shrink: 0; color: var(--text-muted); }
.faq-question.active .faq-arrow { transform: rotate(180deg); color: var(--accent-pink); }
.faq-answer {
  display: none;
  padding: 0 24px 18px;
}
.faq-answer.open { display: block; }
.faq-answer p {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.8;
}

/* ===== 联系我们 ===== */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}
.contact-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
}
.contact-card h2, .contact-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}
.contact-info-list { display: flex; flex-direction: column; gap: 16px; }
.contact-info-item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}
.contact-icon { font-size: 1.3rem; flex-shrink: 0; margin-top: 2px; }
.contact-info-item strong {
  display: block;
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 2px;
}
.contact-info-item p {
  font-size: 0.9rem;
  color: var(--text-main);
}
.contact-info-item a { color: var(--accent-blue); }
.contact-info-item a:hover { color: var(--accent-pink); }

/* ===== 二维码 ===== */
.qrcode-card { text-align: center; }
.qrcode-grid {
  display: flex;
  gap: 24px;
  justify-content: center;
  flex-wrap: wrap;
}
.qrcode-item { display: flex; flex-direction: column; align-items: center; gap: 8px; }
.qrcode-placeholder {
  width: 120px;
  height: 120px;
  background: #fff;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.qrcode-item p { font-size: 0.82rem; color: var(--text-muted); }

/* ===== 联系表单 ===== */
.contact-form-section { margin-top: 48px; }
.contact-form {
  max-width: 700px;
  margin: 0 auto;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px;
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.form-group { display: flex; flex-direction: column; gap: 8px; margin-bottom: 20px; }
.form-group label { font-size: 0.88rem; color: var(--text-muted); font-weight: 500; }
.form-group input,
.form-group select,
.form-group textarea {
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 16px;
  color: var(--text-main);
  font-size: 0.9rem;
  transition: var(--transition);
  outline: none;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(107,63,160,0.15);
}
.form-group select option { background: var(--bg-card); }

/* ===== 社交分享 ===== */
.share-section {
  background: linear-gradient(135deg, rgba(107,63,160,0.1), rgba(255,107,157,0.05));
  padding: 40px 0;
}
.share-title {
  text-align: center;
  font-size: 1.1rem;
  color: var(--text-muted);
  margin-bottom: 24px;
}
.share-btns {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}
.share-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: 50px;
  font-size: 0.88rem;
  font-weight: 600;
  transition: var(--transition);
  border: 1px solid var(--border);
  color: var(--text-main);
  background: var(--bg-card);
}
.share-btn:hover { transform: translateY(-2px); color: #fff; }
.share-weixin:hover { background: #07C160; border-color: #07C160; }
.share-weibo:hover { background: #E6162D; border-color: #E6162D; }
.share-douyin:hover { background: #010101; border-color: #69C9D0; }
.share-bilibili:hover { background: #FB7299; border-color: #FB7299; }

/* ===== 底部 ===== */
.site-footer {
  background: var(--bg-card2);
  border-top: 1px solid var(--border);
  padding: 60px 0 32px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 48px;
}
.footer-logo { height: 40px; width: auto; margin-bottom: 16px; }
.footer-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 8px;
}
.footer-domain {
  font-size: 0.82rem;
  color: var(--primary-light);
  font-weight: 600;
}
.footer-col h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 16px;
}
.footer-col ul { display: flex; flex-direction: column; gap: 8px; }
.footer-col a {
  font-size: 0.85rem;
  color: var(--text-muted);
  transition: var(--transition);
}
.footer-col a:hover { color: var(--accent-blue); padding-left: 4px; }
.footer-bottom {
  border-top: 1px solid var(--border-light);
  padding-top: 24px;
  text-align: center;
}
.footer-bottom p {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 6px;
}
.footer-bottom a { color: var(--text-muted); }
.footer-bottom a:hover { color: var(--accent-blue); }
.footer-update { color: var(--primary-light) !important; }
.footer-icp { font-size: 0.78rem !important; }

/* ===== 内页Hero ===== */
.page-hero {
  padding: 60px 0 48px;
  background: linear-gradient(135deg, rgba(107,63,160,0.15) 0%, rgba(0,212,255,0.05) 100%);
  border-bottom: 1px solid var(--border);
}
.page-hero h1 {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 12px;
}
.page-hero p {
  color: var(--text-muted);
  font-size: 1rem;
  max-width: 600px;
}
.page-hero-anime { background: linear-gradient(135deg, rgba(107,63,160,0.2), rgba(255,107,157,0.08)); }
.page-hero-creation { background: linear-gradient(135deg, rgba(0,212,255,0.1), rgba(107,63,160,0.15)); }
.page-hero-community { background: linear-gradient(135deg, rgba(255,107,157,0.12), rgba(107,63,160,0.1)); }
.page-hero-tools { background: linear-gradient(135deg, rgba(0,212,255,0.12), rgba(107,63,160,0.08)); }
.page-hero-skills { background: linear-gradient(135deg, rgba(255,215,0,0.08), rgba(107,63,160,0.1)); }
.page-hero-about { background: linear-gradient(135deg, rgba(107,63,160,0.15), rgba(0,212,255,0.05)); }
.page-hero-contact { background: linear-gradient(135deg, rgba(255,107,157,0.1), rgba(107,63,160,0.12)); }

/* ===== 筛选标签 ===== */
.filter-tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 32px;
}
.filter-tab {
  padding: 8px 18px;
  border-radius: 50px;
  font-size: 0.88rem;
  font-weight: 500;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-muted);
  transition: var(--transition);
  cursor: pointer;
}
.filter-tab:hover, .filter-tab.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

/* ===== 创作路径 ===== */
.creation-path {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin-bottom: 48px;
}
.path-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: var(--transition);
}
.path-card:hover {
  border-color: var(--primary);
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}
.path-card-featured {
  border-color: var(--primary);
  background: linear-gradient(135deg, rgba(107,63,160,0.1), var(--bg-card));
}
.path-level {
  display: inline-block;
  padding: 4px 12px;
  background: rgba(107,63,160,0.2);
  border: 1px solid var(--primary);
  border-radius: 50px;
  font-size: 0.78rem;
  color: var(--accent-pink);
  margin-bottom: 12px;
}
.path-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 10px;
}
.path-card p { font-size: 0.85rem; color: var(--text-muted); margin-bottom: 14px; }
.path-list { margin-bottom: 16px; }
.path-list li {
  font-size: 0.83rem;
  color: var(--text-light);
  padding: 4px 0 4px 16px;
  position: relative;
}
.path-list li::before { content: '✓'; position: absolute; left: 0; color: var(--accent-blue); }
.path-meta { display: flex; gap: 12px; font-size: 0.8rem; color: var(--text-muted); }

/* ===== 工具卡片 ===== */
.tools-grid { display: flex; flex-direction: column; gap: 24px; margin-bottom: 48px; }
.tool-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: flex;
  gap: 24px;
  align-items: flex-start;
  transition: var(--transition);
}
.tool-card:hover {
  border-color: var(--accent-blue);
  transform: translateX(4px);
  box-shadow: var(--shadow);
}
.tool-icon { font-size: 2.5rem; flex-shrink: 0; }
.tool-info { flex: 1; }
.tool-info h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 10px;
}
.tool-info p { font-size: 0.88rem; color: var(--text-muted); margin-bottom: 14px; }
.tool-features {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 14px;
}
.tool-feature {
  font-size: 0.8rem;
  color: var(--accent-blue);
  background: rgba(0,212,255,0.08);
  padding: 3px 10px;
  border-radius: 50px;
  border: 1px solid rgba(0,212,255,0.2);
}
.tool-stats {
  display: flex;
  gap: 16px;
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 16px;
}
.tool-stats strong { color: var(--accent-gold); }

/* ===== 技能卡片 ===== */
.skills-grid { display: flex; flex-direction: column; gap: 32px; margin-bottom: 48px; }
.skill-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: grid;
  grid-template-columns: 1fr 1fr;
  transition: var(--transition);
}
.skill-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow);
}
.skill-img-wrap { overflow: hidden; }
.skill-img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
.skill-card:hover .skill-img { transform: scale(1.03); }
.skill-info { padding: 28px; }
.skill-tag {
  display: inline-block;
  padding: 3px 12px;
  background: rgba(107,63,160,0.2);
  border: 1px solid var(--primary);
  border-radius: 50px;
  font-size: 0.78rem;
  color: var(--accent-pink);
  margin-bottom: 12px;
}
.skill-info h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 10px;
}
.skill-info p { font-size: 0.85rem; color: var(--text-muted); margin-bottom: 14px; }
.skill-meta { display: flex; gap: 12px; font-size: 0.8rem; color: var(--text-muted); margin-bottom: 16px; }
.skill-video-thumb {
  position: relative;
  aspect-ratio: 16/9;
  border-radius: 8px;
  overflow: hidden;
  cursor: pointer;
}

/* ===== 社区话题 ===== */
.topics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
}
.topic-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  transition: var(--transition);
}
.topic-card:hover {
  border-color: var(--primary);
  transform: translateY(-3px);
}
.topic-num {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--primary);
  opacity: 0.4;
  display: block;
  margin-bottom: 8px;
}
.topic-card h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 6px;
}
.topic-card p { font-size: 0.82rem; color: var(--text-muted); margin-bottom: 10px; }
.topic-count { font-size: 0.78rem; color: var(--accent-pink); }

/* ===== 关于我们 ===== */
.about-intro {
  max-width: 800px;
  margin: 0 auto 48px;
  text-align: center;
}
.about-intro h2 {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 16px;
}
.about-intro p {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 12px;
}
.about-stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 24px;
  margin-bottom: 48px;
}
.about-stat {
  text-align: center;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: var(--transition);
}
.about-stat:hover { border-color: var(--primary); transform: translateY(-3px); }
.about-stat-num {
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent-gold);
  display: block;
  margin-bottom: 8px;
}
.about-stat-label { font-size: 0.85rem; color: var(--text-muted); }
.values-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
}
.value-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  text-align: center;
  transition: var(--transition);
}
.value-card:hover { border-color: var(--primary); transform: translateY(-4px); }
.value-icon { font-size: 2.5rem; margin-bottom: 14px; display: block; }
.value-card h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 10px;
}
.value-card p { font-size: 0.85rem; color: var(--text-muted); }

/* ===== 社区Banner ===== */
.community-banner-full {
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 48px;
  box-shadow: var(--shadow);
}
.community-full-img { width: 100%; height: auto; }

/* ===== 模态弹窗 ===== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(4px);
}
.modal-box {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px;
  max-width: 400px;
  width: 90%;
  text-align: center;
}
.modal-box h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 12px;
}
.modal-box p { font-size: 0.9rem; color: var(--text-muted); margin-bottom: 20px; }
.share-url-input {
  width: 100%;
  padding: 10px 14px;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-main);
  font-size: 0.88rem;
  margin-bottom: 16px;
  outline: none;
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .community-wrap { grid-template-columns: 1fr; }
  .skill-card { grid-template-columns: 1fr; }
  .skill-img-wrap { max-height: 240px; overflow: hidden; }
}
@media (max-width: 768px) {
  .main-nav { display: none; }
  .main-nav.open { display: block; position: absolute; top: var(--header-h); left: 0; right: 0; background: var(--bg-card); border-bottom: 1px solid var(--border); padding: 16px; }
  .main-nav.open ul { flex-direction: column; gap: 4px; }
  .menu-toggle { display: block; }
  .hero-section { min-height: 400px; }
  .hero-stats { gap: 20px; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .expert-card { flex-direction: column; }
  .tool-card { flex-direction: column; }
  .form-row { grid-template-columns: 1fr; }
  .join-steps { grid-template-columns: 1fr; }
  .section { padding: 48px 0; }
  .contact-form { padding: 24px; }
  .join-guide { padding: 24px; }
}
@media (max-width: 480px) {
  .hero-btns { flex-direction: column; }
  .share-btns { flex-direction: column; align-items: center; }
  .video-grid { grid-template-columns: 1fr; }
  .features-grid { grid-template-columns: 1fr; }
  .experts-grid { grid-template-columns: 1fr; }
  .reviews-grid { grid-template-columns: 1fr; }
}

/* ===== 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; }
::-webkit-scrollbar-thumb:hover { background: var(--primary-light); }

/* ===== 选中文字颜色 ===== */
::selection { background: rgba(107,63,160,0.4); color: #fff; }

/* ===== 图片懒加载占位 ===== */
img[loading="lazy"] { background: var(--bg-card); }

/* ===== H5视频播放器模态框 ===== */
.video-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.88);
  z-index: 9999;
  display: none;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(8px);
  padding: 16px;
}
.video-modal-box {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 800px;
  overflow: hidden;
  box-shadow: 0 24px 80px rgba(0,0,0,0.6);
  animation: modalFadeIn 0.25s ease;
}
@keyframes modalFadeIn {
  from { opacity: 0; transform: scale(0.95) translateY(16px); }
  to   { opacity: 1; transform: scale(1) translateY(0); }
}
.video-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  background: rgba(107,63,160,0.1);
}
.video-modal-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-main);
  margin: 0;
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.video-modal-close {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: rgba(255,255,255,0.08);
  color: var(--text-main);
  font-size: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  flex-shrink: 0;
  margin-left: 12px;
}
.video-modal-close:hover {
  background: rgba(255,107,157,0.3);
  color: var(--accent-pink);
}
.video-modal-player {
  position: relative;
  aspect-ratio: 16/9;
  background: #000;
  overflow: hidden;
}
.video-placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(15,15,30,0.95), rgba(107,63,160,0.2));
  gap: 12px;
}
.vp-icon { font-size: 4rem; opacity: 0.7; }
.vp-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-main);
  text-align: center;
  padding: 0 24px;
  max-width: 500px;
}
.vp-sub { font-size: 0.85rem; color: var(--text-muted); }
.vp-progress {
  width: 200px;
  height: 4px;
  background: rgba(255,255,255,0.1);
  border-radius: 2px;
  overflow: hidden;
  margin-top: 8px;
}
.vp-progress-bar {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--primary), var(--accent-pink));
  border-radius: 2px;
  transition: width 0.4s ease;
}
.vp-hint { font-size: 0.78rem; color: var(--text-muted); text-align: center; padding: 0 24px; }
.video-modal-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  border-top: 1px solid var(--border);
  background: rgba(26,26,46,0.8);
  flex-wrap: wrap;
  gap: 10px;
}
.video-modal-brand {
  font-size: 0.82rem;
  color: var(--text-muted);
}
.video-modal-actions { display: flex; gap: 8px; }

/* ===== 回到顶部按钮 ===== */
#back-top {
  position: fixed;
  bottom: 32px;
  right: 24px;
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, var(--primary), var(--accent-pink));
  color: #fff;
  border-radius: 50%;
  font-size: 1.4rem;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(107,63,160,0.4);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease, transform 0.3s ease;
  z-index: 900;
  line-height: 1;
}
#back-top:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(107,63,160,0.5);
}

/* ===== 滚动后固定头部加深 ===== */
.site-header.scrolled {
  background: rgba(15,15,30,0.98);
  box-shadow: 0 2px 20px rgba(0,0,0,0.4);
}

/* ===== 无障碍辅助 ===== */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

/* ===== 影视传媒卡片 ===== */
.media-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px;
}
.media-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
}
.media-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
  border-color: var(--primary);
}
.media-thumb {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
  background: linear-gradient(135deg, rgba(107,63,160,0.3), rgba(255,107,157,0.2));
  display: flex;
  align-items: center;
  justify-content: center;
}
.media-thumb-icon { font-size: 3rem; opacity: 0.6; }
.media-thumb .play-overlay { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; background: rgba(0,0,0,0.3); opacity: 0; transition: var(--transition); }
.media-card:hover .play-overlay { opacity: 1; }
.media-info { padding: 16px; }
.media-tag {
  display: inline-block;
  padding: 2px 10px;
  background: rgba(255,107,157,0.15);
  border: 1px solid rgba(255,107,157,0.3);
  border-radius: 50px;
  font-size: 0.75rem;
  color: var(--accent-pink);
  margin-bottom: 8px;
}
.media-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 6px;
  line-height: 1.4;
}
.media-desc { font-size: 0.82rem; color: var(--text-muted); }

/* ===== 视频卡片play-overlay点击区域 ===== */
.video-thumb .play-overlay { cursor: pointer; }
.video-thumb .play-overlay:focus-visible { outline: 2px solid var(--accent-blue); }

/* ===== 移动端视频模态框适配 ===== */
@media (max-width: 600px) {
  .video-modal-box { border-radius: 12px; }
  .video-modal-header { padding: 12px 16px; }
  .video-modal-title { font-size: 0.9rem; }
  .video-modal-footer { padding: 10px 16px; }
  .vp-icon { font-size: 3rem; }
  .vp-title { font-size: 0.95rem; }
  #back-top { bottom: 20px; right: 16px; width: 40px; height: 40px; font-size: 1.2rem; }
}