/* =============================================
   免费看片 - 主样式文件
   bdheyy.cn | 原创设计 © 2025
   ============================================= */

/* ---- CSS变量 ---- */
:root {
  --primary: #FF6B9D;
  --primary-dark: #e0527f;
  --secondary: #8B5CF6;
  --accent: #FF1493;
  --bg-dark: #0F0F1E;
  --bg-card: #1A1A2E;
  --bg-card2: #16213E;
  --text-main: #FFFFFF;
  --text-sub: #B0B0C8;
  --text-muted: #6B6B8A;
  --border: rgba(255,107,157,0.18);
  --gradient: linear-gradient(135deg, #FF6B9D 0%, #8B5CF6 100%);
  --gradient-dark: linear-gradient(135deg, #1A1A2E 0%, #0F0F1E 100%);
  --shadow: 0 8px 32px rgba(255,107,157,0.15);
  --shadow-lg: 0 20px 60px rgba(139,92,246,0.2);
  --radius: 12px;
  --radius-lg: 20px;
  --transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
}

/* ---- 重置 ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: '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: inherit; text-decoration: none; transition: var(--transition); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

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

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

/* ---- 顶部公告栏 ---- */
.top-bar {
  background: var(--gradient);
  padding: 8px 0;
  font-size: 13px;
  text-align: center;
  position: relative;
  z-index: 100;
}
.top-bar .container { display: flex; justify-content: space-between; align-items: center; }
.top-bar-links a { margin-left: 16px; opacity: 0.9; }
.top-bar-links a:hover { opacity: 1; text-decoration: underline; }

/* ---- 导航栏 ---- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 999;
  background: rgba(15,15,30,0.96);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 2px 20px rgba(0,0,0,0.4);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  gap: 20px;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.nav-logo img {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--primary);
}
.nav-logo-text { display: flex; flex-direction: column; line-height: 1.2; }
.nav-logo-name { font-size: 18px; font-weight: 700; background: var(--gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.nav-logo-sub { font-size: 11px; color: var(--text-muted); }

.nav-menu { display: flex; align-items: center; gap: 4px; }
.nav-menu a {
  padding: 8px 14px;
  border-radius: 8px;
  font-size: 14px;
  color: var(--text-sub);
  font-weight: 500;
  transition: var(--transition);
  white-space: nowrap;
}
.nav-menu a:hover, .nav-menu a.active {
  color: var(--primary);
  background: rgba(255,107,157,0.1);
}

.nav-cta { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.btn-nav-primary {
  background: var(--gradient);
  color: #fff;
  padding: 9px 20px;
  border-radius: 22px;
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
  box-shadow: 0 4px 15px rgba(255,107,157,0.3);
  transition: var(--transition);
}
.btn-nav-primary:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(255,107,157,0.4); }

.hamburger { display: none; flex-direction: column; gap: 5px; padding: 4px; cursor: pointer; }
.hamburger span { display: block; width: 22px; height: 2px; background: var(--text-main); border-radius: 2px; transition: var(--transition); }

/* ---- 搜索栏 ---- */
.search-bar-wrap {
  background: rgba(26,26,46,0.95);
  border-bottom: 1px solid var(--border);
  padding: 10px 0;
}
.search-bar-inner {
  display: flex;
  align-items: center;
  max-width: 600px;
  margin: 0 auto;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--border);
  border-radius: 30px;
  overflow: hidden;
  transition: var(--transition);
}
.search-bar-inner:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(255,107,157,0.15);
}
.search-bar-inner input {
  flex: 1;
  background: none;
  border: none;
  outline: none;
  padding: 10px 20px;
  color: var(--text-main);
  font-size: 14px;
  font-family: inherit;
}
.search-bar-inner input::placeholder { color: var(--text-muted); }
.search-bar-inner button {
  background: var(--gradient);
  color: #fff;
  padding: 10px 22px;
  font-size: 14px;
  font-weight: 600;
  border-radius: 0 30px 30px 0;
  transition: var(--transition);
}
.search-bar-inner button:hover { opacity: 0.9; }

/* ---- 按钮 ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 30px;
  font-size: 15px;
  font-weight: 600;
  transition: var(--transition);
  cursor: pointer;
}
.btn-primary {
  background: var(--gradient);
  color: #fff;
  box-shadow: 0 4px 20px rgba(255,107,157,0.35);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(255,107,157,0.5); }
.btn-secondary {
  background: transparent;
  color: var(--text-main);
  border: 2px solid rgba(255,255,255,0.25);
}
.btn-secondary:hover { border-color: var(--primary); color: var(--primary); }
.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
}
.btn-outline:hover { background: var(--primary); color: #fff; }
.btn-sm { padding: 8px 18px; font-size: 13px; }

/* ---- Hero Banner ---- */
.hero-section {
  position: relative;
  min-height: 600px;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  filter: brightness(0.45);
  transform: scale(1.02);
  transition: transform 8s ease;
}
.hero-bg.loaded { transform: scale(1); }
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(15,15,30,0.85) 0%, rgba(139,92,246,0.3) 60%, rgba(255,107,157,0.2) 100%);
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 680px;
  padding: 80px 0;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,107,157,0.15);
  border: 1px solid rgba(255,107,157,0.4);
  color: var(--primary);
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 20px;
}
.hero-badge::before { content: '▶'; font-size: 10px; }
.hero-title {
  font-size: clamp(32px, 5vw, 56px);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 20px;
  letter-spacing: -0.5px;
}
.hero-title em {
  font-style: normal;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-desc {
  font-size: 16px;
  color: var(--text-sub);
  margin-bottom: 32px;
  max-width: 520px;
  line-height: 1.8;
}
.hero-btns { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 40px; }
.hero-stats { display: flex; gap: 32px; flex-wrap: wrap; }
.hero-stat-item { text-align: center; }
.hero-stat-num { font-size: 28px; font-weight: 800; background: var(--gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.hero-stat-label { font-size: 12px; color: var(--text-muted); margin-top: 2px; }

/* ---- 通用区块 ---- */
.section-pad { padding: 80px 0; }
.section-pad-sm { padding: 50px 0; }
.bg-dark { background: var(--bg-dark); }
.bg-card { background: var(--bg-card); }
.bg-gradient { background: linear-gradient(135deg, #1A1A2E 0%, #16213E 100%); }

.section-header { text-align: center; margin-bottom: 50px; }
.section-label {
  display: inline-block;
  background: rgba(255,107,157,0.12);
  color: var(--primary);
  border: 1px solid rgba(255,107,157,0.3);
  padding: 5px 14px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 12px;
}
.section-title {
  font-size: clamp(24px, 3.5vw, 38px);
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 14px;
}
.section-title span {
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.section-subtitle { font-size: 15px; color: var(--text-sub); max-width: 600px; margin: 0 auto; line-height: 1.8; }

/* ---- 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; }
.grid-5 { display: grid; grid-template-columns: repeat(5, 1fr); gap: 18px; }

/* ---- 视频卡片 ---- */
.video-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: var(--transition);
  cursor: pointer;
  position: relative;
}
.video-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: rgba(255,107,157,0.4); }
.video-thumb {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--bg-card2);
}
.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(0,0,0,0.3);
  opacity: 0;
  transition: var(--transition);
}
.video-card:hover .video-play-btn { opacity: 1; }
.play-icon {
  width: 54px;
  height: 54px;
  background: var(--gradient);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  box-shadow: 0 4px 20px rgba(255,107,157,0.5);
  transform: scale(0.8);
  transition: var(--transition);
}
.video-card:hover .play-icon { transform: scale(1); }
.video-duration {
  position: absolute;
  bottom: 8px;
  right: 10px;
  background: rgba(0,0,0,0.75);
  color: #fff;
  font-size: 12px;
  padding: 2px 7px;
  border-radius: 4px;
  font-weight: 600;
}
.video-tag {
  position: absolute;
  top: 10px;
  left: 10px;
  background: var(--gradient);
  color: #fff;
  font-size: 11px;
  padding: 3px 9px;
  border-radius: 4px;
  font-weight: 700;
}
.video-info { padding: 14px 16px; }
.video-title {
  font-size: 14px;
  font-weight: 600;
  line-height: 1.5;
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  color: var(--text-main);
}
.video-meta { display: flex; align-items: center; justify-content: space-between; font-size: 12px; color: var(--text-muted); }
.video-stats { display: flex; gap: 12px; }
.video-stats span { display: flex; align-items: center; gap: 4px; }
.video-author { display: flex; align-items: center; gap: 6px; }
.video-author img { width: 20px; height: 20px; border-radius: 50%; object-fit: cover; }

/* ---- 特色卡片 ---- */
.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--gradient);
  transform: scaleX(0);
  transition: var(--transition);
  transform-origin: left;
}
.feature-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: rgba(255,107,157,0.3); }
.feature-card:hover::before { transform: scaleX(1); }
.feature-icon {
  width: 54px;
  height: 54px;
  background: rgba(255,107,157,0.12);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: 16px;
  transition: var(--transition);
}
.feature-card:hover .feature-icon { background: rgba(255,107,157,0.2); transform: scale(1.05); }
.feature-title { font-size: 16px; font-weight: 700; margin-bottom: 8px; }
.feature-desc { font-size: 13px; color: var(--text-sub); line-height: 1.7; }

/* ---- 专家卡片 ---- */
.expert-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
}
.expert-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); }
.expert-img {
  width: 100%;
  aspect-ratio: 1/1;
  object-fit: cover;
  object-position: top;
}
.expert-info { padding: 20px; }
.expert-name { font-size: 17px; font-weight: 700; margin-bottom: 4px; }
.expert-role { font-size: 13px; color: var(--primary); font-weight: 600; margin-bottom: 10px; }
.expert-desc { font-size: 13px; color: var(--text-sub); line-height: 1.6; margin-bottom: 14px; }
.expert-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 14px; }
.expert-tag {
  background: rgba(139,92,246,0.12);
  color: var(--secondary);
  border: 1px solid rgba(139,92,246,0.25);
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 600;
}
.expert-btns { display: flex; gap: 8px; }
.expert-btns a { flex: 1; text-align: center; padding: 8px; border-radius: 8px; font-size: 12px; font-weight: 600; transition: var(--transition); }
.expert-btns .btn-contact { background: rgba(255,107,157,0.12); color: var(--primary); border: 1px solid rgba(255,107,157,0.3); }
.expert-btns .btn-contact:hover { background: var(--primary); color: #fff; }
.expert-btns .btn-works { background: rgba(139,92,246,0.12); color: var(--secondary); border: 1px solid rgba(139,92,246,0.3); }
.expert-btns .btn-works:hover { background: var(--secondary); color: #fff; }

/* ---- 用户评价 ---- */
.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: rgba(255,107,157,0.3); box-shadow: var(--shadow); }
.review-header { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.review-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  flex-shrink: 0;
}
.review-user-info .review-name { font-size: 15px; font-weight: 700; }
.review-user-info .review-date { font-size: 12px; color: var(--text-muted); }
.review-stars { color: #FFD700; font-size: 14px; letter-spacing: 1px; margin-bottom: 10px; }
.review-text { font-size: 14px; color: var(--text-sub); line-height: 1.7; }
.review-tag { display: inline-block; margin-top: 10px; background: rgba(255,107,157,0.1); color: var(--primary); padding: 3px 10px; border-radius: 12px; font-size: 11px; font-weight: 600; }

/* ---- FAQ ---- */
.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 12px;
  overflow: hidden;
  transition: var(--transition);
}
.faq-item.active { border-color: rgba(255,107,157,0.4); }
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 22px;
  cursor: pointer;
  font-size: 15px;
  font-weight: 600;
  gap: 12px;
}
.faq-question:hover { color: var(--primary); }
.faq-icon {
  width: 24px;
  height: 24px;
  background: rgba(255,107,157,0.12);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  color: var(--primary);
  flex-shrink: 0;
  transition: var(--transition);
}
.faq-item.active .faq-icon { background: var(--primary); color: #fff; transform: rotate(45deg); }
.faq-answer {
  padding: 0 22px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.8;
}
.faq-item.active .faq-answer { max-height: 300px; padding: 0 22px 18px; }

/* ---- 合作品牌 ---- */
.partner-grid { display: flex; flex-wrap: wrap; gap: 16px; justify-content: center; align-items: center; }
.partner-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 24px;
  font-size: 14px;
  font-weight: 700;
  color: var(--text-sub);
  transition: var(--transition);
  white-space: nowrap;
}
.partner-item:hover { border-color: var(--primary); color: var(--primary); transform: translateY(-2px); }

/* ---- 加入社区步骤 ---- */
.steps-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.step-item { text-align: center; position: relative; }
.step-item:not(:last-child)::after {
  content: '→';
  position: absolute;
  right: -14px;
  top: 22px;
  font-size: 20px;
  color: var(--text-muted);
}
.step-num {
  width: 48px;
  height: 48px;
  background: var(--gradient);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 800;
  margin: 0 auto 14px;
  box-shadow: 0 4px 15px rgba(255,107,157,0.3);
}
.step-title { font-size: 15px; font-weight: 700; margin-bottom: 6px; }
.step-desc { font-size: 13px; color: var(--text-sub); line-height: 1.6; }

/* ---- 联系我们 ---- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: start; }
.contact-info-item { display: flex; align-items: flex-start; gap: 14px; margin-bottom: 20px; }
.contact-icon {
  width: 44px;
  height: 44px;
  background: rgba(255,107,157,0.12);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}
.contact-info-item h4 { font-size: 14px; font-weight: 700; margin-bottom: 3px; }
.contact-info-item p { font-size: 13px; color: var(--text-sub); }
.qr-row { display: flex; gap: 20px; margin-top: 24px; }
.qr-item { text-align: center; }
.qr-item img { width: 100px; height: 110px; border-radius: 8px; border: 2px solid var(--border); object-fit: cover; }
.qr-item p { font-size: 12px; color: var(--text-muted); margin-top: 6px; }

/* ---- 社区入口 ---- */
.community-entry-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.community-entry-item {
  background: var(--bg-card2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  text-align: center;
  transition: var(--transition);
}
.community-entry-item:hover { border-color: var(--primary); transform: translateY(-3px); }
.community-entry-icon { font-size: 28px; margin-bottom: 10px; }
.community-entry-name { font-size: 14px; font-weight: 700; margin-bottom: 4px; }
.community-entry-desc { font-size: 12px; color: var(--text-muted); }

/* ---- 分享按钮 ---- */
.share-btns { display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; }
.share-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: 22px;
  font-size: 13px;
  font-weight: 600;
  transition: var(--transition);
  border: 1px solid var(--border);
  color: var(--text-sub);
}
.share-btn:hover { transform: translateY(-2px); }
.share-btn.weixin:hover { border-color: #07C160; color: #07C160; background: rgba(7,193,96,0.08); }
.share-btn.weibo:hover { border-color: #E6162D; color: #E6162D; background: rgba(230,22,45,0.08); }
.share-btn.douyin:hover { border-color: #FE2C55; color: #FE2C55; background: rgba(254,44,85,0.08); }
.share-btn.bilibili:hover { border-color: #00A1D6; color: #00A1D6; background: rgba(0,161,214,0.08); }

/* ---- 标签 ---- */
.tag {
  display: inline-block;
  background: rgba(255,107,157,0.1);
  color: var(--primary);
  border: 1px solid rgba(255,107,157,0.25);
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
}
.tag-purple { background: rgba(139,92,246,0.1); color: var(--secondary); border-color: rgba(139,92,246,0.25); }

/* ---- 视频播放模态框 ---- */
.video-modal {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: rgba(0,0,0,0.92);
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.video-modal.active { display: flex; }
.video-modal-inner {
  position: relative;
  width: 100%;
  max-width: 900px;
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 30px 80px rgba(0,0,0,0.6);
}
.video-modal-close {
  position: absolute;
  top: 12px;
  right: 12px;
  z-index: 10;
  width: 36px;
  height: 36px;
  background: rgba(0,0,0,0.6);
  color: #fff;
  border-radius: 50%;
  font-size: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}
.video-modal-close:hover { background: var(--primary); }
.video-modal video { width: 100%; aspect-ratio: 16/9; display: block; background: #000; }

/* ---- 面包屑 ---- */
.breadcrumb { padding: 14px 0; font-size: 13px; color: var(--text-muted); }
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb span { margin: 0 8px; }

/* ---- 分页 ---- */
.pagination { display: flex; gap: 8px; justify-content: center; margin-top: 40px; }
.page-btn {
  width: 38px;
  height: 38px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 600;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-sub);
  transition: var(--transition);
  cursor: pointer;
}
.page-btn:hover, .page-btn.active { background: var(--gradient); color: #fff; border-color: transparent; }

/* ---- 页脚 ---- */
.site-footer {
  background: linear-gradient(180deg, var(--bg-card) 0%, #0a0a18 100%);
  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-logo { display: flex; align-items: center; gap: 10px; margin-bottom: 16px; }
.footer-logo img { width: 40px; height: 40px; border-radius: 50%; }
.footer-logo-name { font-size: 18px; font-weight: 700; background: var(--gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.footer-desc { font-size: 13px; color: var(--text-muted); line-height: 1.8; margin-bottom: 20px; }
.footer-social { display: flex; gap: 10px; margin-bottom: 20px; }
.footer-social a {
  width: 36px;
  height: 36px;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--border);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  transition: var(--transition);
}
.footer-social a:hover { background: var(--gradient); border-color: transparent; }
.footer-col h4 { font-size: 15px; font-weight: 700; margin-bottom: 16px; color: var(--text-main); }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { font-size: 13px; color: var(--text-muted); transition: var(--transition); }
.footer-col ul li a:hover { color: var(--primary); padding-left: 4px; }
.footer-qr { display: flex; gap: 16px; }
.footer-qr-item { text-align: center; }
.footer-qr-item img { width: 80px; height: 88px; border-radius: 6px; border: 1px solid var(--border); object-fit: cover; }
.footer-qr-item p { font-size: 11px; color: var(--text-muted); margin-top: 4px; }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 20px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 10px;
}
.footer-bottom a { color: var(--text-muted); }
.footer-bottom a:hover { color: var(--primary); }

/* ---- 返回顶部 ---- */
.back-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 44px;
  height: 44px;
  background: var(--gradient);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  box-shadow: 0 4px 15px rgba(255,107,157,0.4);
  opacity: 0;
  transform: translateY(20px);
  transition: var(--transition);
  cursor: pointer;
  z-index: 500;
}
.back-top.visible { opacity: 1; transform: translateY(0); }
.back-top:hover { transform: translateY(-4px); box-shadow: 0 8px 25px rgba(255,107,157,0.5); }

/* ---- 数字动画 ---- */
.count-num { font-variant-numeric: tabular-nums; }

/* ---- 懒加载占位 ---- */
img[data-src] { background: var(--bg-card2); min-height: 40px; }

/* ---- 内页标题区 ---- */
.page-hero {
  background: linear-gradient(135deg, var(--bg-card) 0%, var(--bg-dark) 100%);
  padding: 60px 0 40px;
  border-bottom: 1px solid var(--border);
  text-align: center;
}
.page-hero h1 { font-size: clamp(26px, 4vw, 40px); font-weight: 800; margin-bottom: 12px; }
.page-hero p { font-size: 15px; color: var(--text-sub); max-width: 500px; margin: 0 auto; }

/* ---- 视频播放页 ---- */
.video-player-wrap {
  background: #000;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 16/9;
  margin-bottom: 24px;
}
.video-player-wrap video { width: 100%; height: 100%; display: block; }
.video-detail-title { font-size: 22px; font-weight: 800; margin-bottom: 10px; }
.video-detail-meta { display: flex; align-items: center; gap: 16px; font-size: 13px; color: var(--text-muted); flex-wrap: wrap; margin-bottom: 16px; }
.video-detail-desc { font-size: 14px; color: var(--text-sub); line-height: 1.8; }

/* ---- 响应式 ---- */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-5 { grid-template-columns: repeat(3, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .steps-grid { grid-template-columns: repeat(2, 1fr); }
  .step-item:not(:last-child)::after { display: none; }
}
@media (max-width: 768px) {
  .nav-menu { display: none; position: fixed; top: 0; left: 0; right: 0; bottom: 0; background: rgba(15,15,30,0.98); flex-direction: column; align-items: center; justify-content: center; gap: 20px; z-index: 998; }
  .nav-menu.open { display: flex; }
  .nav-menu a { font-size: 18px; }
  .hamburger { display: flex; z-index: 999; }
  .btn-nav-primary { display: none; }
  .grid-2, .grid-3, .grid-4, .grid-5 { grid-template-columns: 1fr; }
  .hero-stats { gap: 20px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .contact-grid { grid-template-columns: 1fr; }
  .community-entry-grid { grid-template-columns: 1fr; }
  .steps-grid { grid-template-columns: 1fr; }
  .top-bar .container { flex-direction: column; gap: 4px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .hero-content { padding: 50px 0; }
  .section-pad { padding: 50px 0; }
}
@media (max-width: 480px) {
  .hero-btns { flex-direction: column; }
  .hero-btns .btn { width: 100%; justify-content: center; }
  .share-btns { flex-direction: column; align-items: center; }
}