/* =============================================
   少妇 - 主样式文件
   Brand: 少妇 | Domain: cjsarl.cn
   ============================================= */

/* ---- CSS变量 ---- */
:root {
  --primary: #7c3aed;
  --primary-dark: #5b21b6;
  --primary-light: #a78bfa;
  --accent: #06b6d4;
  --accent-dark: #0891b2;
  --bg-dark: #0d0d1a;
  --bg-card: #13132a;
  --bg-nav: rgba(13,13,26,0.97);
  --text-main: #e2e8f0;
  --text-muted: #94a3b8;
  --text-white: #ffffff;
  --border: rgba(124,58,237,0.25);
  --gradient-hero: linear-gradient(135deg, #0d0d1a 0%, #1a0a2e 40%, #0a1628 100%);
  --gradient-card: linear-gradient(145deg, #13132a, #1e1e3a);
  --gradient-btn: linear-gradient(135deg, #7c3aed, #06b6d4);
  --shadow-card: 0 4px 24px rgba(124,58,237,0.18);
  --shadow-hover: 0 8px 40px rgba(124,58,237,0.35);
  --radius: 12px;
  --radius-sm: 8px;
  --transition: all 0.3s ease;
}

/* ---- 基础重置 ---- */
*, *::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: var(--primary-light); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--accent); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }
button { cursor: pointer; border: none; background: none; }

/* ---- 顶部公告栏 ---- */
.top-bar {
  background: linear-gradient(90deg, var(--primary-dark), var(--accent-dark));
  color: #fff;
  text-align: center;
  padding: 7px 20px;
  font-size: 13px;
  letter-spacing: 0.5px;
}
.top-bar a { color: #fff; font-weight: 600; }

/* ---- 导航栏 ---- */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--bg-nav);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.nav-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  gap: 20px;
  height: 64px;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  flex-shrink: 0;
}
.nav-logo img.site-favicon {
  width: 32px;
  height: 32px;
  border-radius: 6px;
  object-fit: cover;
}
.nav-logo img.site-logo {
  height: 40px;
  width: auto;
}
.nav-logo .brand-name {
  font-size: 20px;
  font-weight: 800;
  background: var(--gradient-btn);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  white-space: nowrap;
}
.nav-menu {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1;
}
.nav-menu a {
  color: var(--text-muted);
  font-size: 14px;
  font-weight: 500;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
  white-space: nowrap;
}
.nav-menu a:hover,
.nav-menu a.active {
  color: var(--text-white);
  background: rgba(124,58,237,0.15);
}
.nav-search {
  display: flex;
  align-items: center;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 6px 14px;
  gap: 8px;
  min-width: 200px;
}
.nav-search input {
  background: none;
  border: none;
  outline: none;
  color: var(--text-main);
  font-size: 13px;
  width: 100%;
}
.nav-search input::placeholder { color: var(--text-muted); }
.nav-search button {
  color: var(--text-muted);
  font-size: 15px;
  transition: var(--transition);
}
.nav-search button:hover { color: var(--primary-light); }
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 6px;
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-main);
  border-radius: 2px;
  transition: var(--transition);
}

/* ---- 面包屑 ---- */
.breadcrumb {
  max-width: 1280px;
  margin: 0 auto;
  padding: 12px 20px;
  font-size: 13px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--primary-light); }
.breadcrumb .sep { color: rgba(255,255,255,0.2); }
.breadcrumb .current { color: var(--text-main); }

/* ---- Hero Banner ---- */
.hero-banner {
  position: relative;
  min-height: 580px;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.ago1six {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  filter: brightness(0.45);
  transform: scale(1.03);
  transition: transform 8s ease;
}
.hero-banner:hover .ago1six { transform: scale(1.06); }
.ypmlu {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(13,13,26,0.85) 0%, rgba(124,58,237,0.15) 50%, rgba(6,182,212,0.1) 100%);
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 1280px;
  margin: 0 auto;
  padding: 80px 20px;
  width: 100%;
}
.mlaxp {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(124,58,237,0.2);
  border: 1px solid rgba(124,58,237,0.4);
  color: var(--primary-light);
  font-size: 12px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 20px;
  margin-bottom: 20px;
  letter-spacing: 1px;
  text-transform: uppercase;
}
.mlaxp::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--primary-light);
  border-radius: 50%;
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}
.hero-title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 900;
  line-height: 1.15;
  margin-bottom: 20px;
  color: #fff;
}
.hero-title .highlight {
  background: var(--gradient-btn);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-desc {
  font-size: 16px;
  color: rgba(255,255,255,0.75);
  max-width: 580px;
  margin-bottom: 32px;
  line-height: 1.8;
}
.hero-desc .domain {
  color: var(--accent);
  font-weight: 600;
}
.80x0v78y {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--gradient-btn);
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  padding: 12px 28px;
  border-radius: 30px;
  transition: var(--transition);
  box-shadow: 0 4px 20px rgba(124,58,237,0.4);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(124,58,237,0.6);
  color: #fff;
}
.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 2px solid rgba(255,255,255,0.3);
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  padding: 10px 26px;
  border-radius: 30px;
  transition: var(--transition);
}
.btn-outline:hover {
  border-color: var(--primary-light);
  color: var(--primary-light);
  background: rgba(124,58,237,0.1);
}
.hero-stats {
  display: flex;
  gap: 40px;
  margin-top: 48px;
  flex-wrap: wrap;
}
.stat-item { text-align: center; }
.stat-num {
  font-size: 2rem;
  font-weight: 900;
  background: var(--gradient-btn);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}
.90ob3ltf {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 4px;
}

/* ---- 通用区块 ---- */
.section {
  padding: 72px 0;
}
.section-alt {
  background: rgba(255,255,255,0.02);
}
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 20px;
}
.section-header {
  text-align: center;
  margin-bottom: 48px;
}
.h9wn8 {
  display: inline-block;
  background: rgba(124,58,237,0.15);
  border: 1px solid rgba(124,58,237,0.3);
  color: var(--primary-light);
  font-size: 11px;
  font-weight: 700;
  padding: 4px 14px;
  border-radius: 20px;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 12px;
}
.section-title {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 800;
  color: #fff;
  margin-bottom: 12px;
  line-height: 1.3;
}
.section-title .brand { color: var(--primary-light); }
.9ne80i6 {
  font-size: 15px;
  color: var(--text-muted);
  max-width: 560px;
  margin: 0 auto;
  line-height: 1.8;
}

/* ---- 视频卡片 ---- */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}
.video-card {
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
  cursor: pointer;
}
.video-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(124,58,237,0.5);
}
.video-thumb {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
  background: #1a1a2e;
}
.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); }
.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 .play-btn { opacity: 1; }
.play-icon {
  width: 56px;
  height: 56px;
  background: rgba(124,58,237,0.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(4px);
  transition: var(--transition);
}
.play-icon svg {
  width: 22px;
  height: 22px;
  fill: #fff;
  margin-left: 3px;
}
.video-card:hover .play-icon {
  transform: scale(1.1);
  background: rgba(124,58,237,1);
}
.tmsba90r {
  position: absolute;
  bottom: 8px;
  right: 8px;
  background: rgba(0,0,0,0.75);
  color: #fff;
  font-size: 11px;
  font-weight: 600;
  padding: 2px 7px;
  border-radius: 4px;
}
.p6aeq {
  position: absolute;
  top: 8px;
  left: 8px;
  background: var(--gradient-btn);
  color: #fff;
  font-size: 10px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 4px;
  letter-spacing: 0.5px;
}
.video-info {
  padding: 14px 16px 16px;
}
.video-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 8px;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.4bndj7ss {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 12px;
  color: var(--text-muted);
}
.4bndj7ss span {
  display: flex;
  align-items: center;
  gap: 4px;
}
.57xa37j {
  display: flex;
  gap: 6px;
  margin-top: 10px;
  flex-wrap: wrap;
}
.tag {
  background: rgba(124,58,237,0.12);
  border: 1px solid rgba(124,58,237,0.2);
  color: var(--primary-light);
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 4px;
}

/* ---- 功能模块卡片 ---- */
.module-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 20px;
}
.module-card {
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.module-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-btn);
  opacity: 0;
  transition: var(--transition);
}
.module-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(124,58,237,0.4);
}
.module-card:hover::before { opacity: 1; }
.vew54 {
  width: 52px;
  height: 52px;
  background: rgba(124,58,237,0.15);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: 16px;
  transition: var(--transition);
}
.module-card:hover .vew54 {
  background: rgba(124,58,237,0.3);
  transform: scale(1.1);
}
.vmnrwhx {
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
}
.mhltx3 {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ---- 专家卡片 ---- */
.expert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px;
}
.expert-card {
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  text-align: center;
  transition: var(--transition);
}
.expert-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(124,58,237,0.4);
}
.expert-avatar {
  width: 90px;
  height: 90px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto 16px;
  border: 3px solid rgba(124,58,237,0.4);
  transition: var(--transition);
}
.expert-card:hover .expert-avatar { border-color: var(--primary); }
.expert-name {
  font-size: 18px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 4px;
}
.w4t6k {
  font-size: 13px;
  color: var(--primary-light);
  margin-bottom: 12px;
  font-weight: 600;
}
.w4bip {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 16px;
}
.tnmi8 {
  display: flex;
  gap: 6px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 16px;
}
.huip2yd5 {
  background: rgba(6,182,212,0.1);
  border: 1px solid rgba(6,182,212,0.25);
  color: var(--accent);
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 4px;
}
.9zq5sim {
  display: flex;
  gap: 8px;
  justify-content: center;
}
.btn-sm {
  font-size: 12px;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 20px;
  transition: var(--transition);
}
.btn-sm-primary {
  background: var(--gradient-btn);
  color: #fff;
}
.btn-sm-primary:hover { opacity: 0.9; color: #fff; }
.btn-sm-outline {
  border: 1px solid var(--border);
  color: var(--text-muted);
}
.btn-sm-outline:hover {
  border-color: var(--primary-light);
  color: var(--primary-light);
}

/* ---- 合作品牌Logo墙 ---- */
.47eoaq {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
}
.0m4u4 {
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px 24px;
  font-size: 14px;
  font-weight: 700;
  color: var(--text-muted);
  transition: var(--transition);
  min-width: 120px;
  text-align: center;
}
.0m4u4:hover {
  color: var(--primary-light);
  border-color: rgba(124,58,237,0.4);
  transform: translateY(-2px);
}

/* ---- FAQ ---- */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.faq-item {
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
}
.faq-item.open { border-color: rgba(124,58,237,0.4); }
.faq-question {
  padding: 18px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-white);
  gap: 12px;
}
.faq-question:hover { color: var(--primary-light); }
.faq-icon {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  background: rgba(124,58,237,0.15);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  color: var(--primary-light);
  transition: var(--transition);
}
.faq-item.open .faq-icon { transform: rotate(45deg); background: rgba(124,58,237,0.3); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
  padding: 0 20px;
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.8;
}
.faq-item.open .faq-answer {
  max-height: 300px;
  padding: 0 20px 18px;
}

/* ---- 用户评价 ---- */
.review-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}
.review-card {
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: var(--transition);
}
.review-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-card);
}
.w6sxwr4 {
  display: flex;
  gap: 3px;
  margin-bottom: 12px;
}
.star { color: #f59e0b; font-size: 16px; }
.2bgfqsy3 {
  font-size: 14px;
  color: var(--text-main);
  line-height: 1.8;
  margin-bottom: 16px;
  font-style: italic;
}
.5wukb {
  display: flex;
  align-items: center;
  gap: 10px;
}
.vbh3h011 {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--gradient-btn);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 800;
  color: #fff;
  flex-shrink: 0;
}
.sl11ds25 {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-white);
}
.kp0sech {
  font-size: 12px;
  color: var(--text-muted);
}

/* ---- 联系区块 ---- */
.wgqpmk1z {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 20px;
}
.rpls8jm {
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  text-align: center;
  transition: var(--transition);
}
.rpls8jm:hover {
  border-color: rgba(124,58,237,0.4);
  transform: translateY(-3px);
}
.3vmt7jz {
  font-size: 32px;
  margin-bottom: 12px;
}
.6x19m {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 6px;
}
.y968gr5w {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-white);
  word-break: break-all;
}

/* ---- 二维码区块 ---- */
.qzmd43 {
  display: flex;
  gap: 40px;
  justify-content: center;
  flex-wrap: wrap;
}
.thbsn {
  text-align: center;
}
.thbsn img {
  width: 140px;
  height: 140px;
  border-radius: var(--radius-sm);
  border: 2px solid var(--border);
  margin: 0 auto 10px;
}
.teb6pt {
  font-size: 13px;
  color: var(--text-muted);
}

/* ---- 分享按钮 ---- */
.share-bar {
  display: flex;
  gap: 10px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 20px;
}
.share-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  transition: var(--transition);
  border: 1px solid transparent;
}
.share-wechat { background: rgba(7,193,96,0.15); color: #07c160; border-color: rgba(7,193,96,0.3); }
.share-weibo { background: rgba(230,22,45,0.15); color: #e6162d; border-color: rgba(230,22,45,0.3); }
.share-douyin { background: rgba(0,0,0,0.3); color: #fff; border-color: rgba(255,255,255,0.15); }
.share-bilibili { background: rgba(0,161,214,0.15); color: #00a1d6; border-color: rgba(0,161,214,0.3); }
.share-btn:hover { transform: translateY(-2px); opacity: 0.85; }

/* ---- 页脚 ---- */
.footer {
  background: #080814;
  border-top: 1px solid var(--border);
  padding: 60px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-brand .brand-name {
  font-size: 22px;
  font-weight: 900;
  background: var(--gradient-btn);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 12px;
}
.footer-brand p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 20px;
}
.footer-col h4 {
  font-size: 14px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}
.footer-col ul li {
  margin-bottom: 8px;
}
.footer-col ul li a {
  font-size: 13px;
  color: var(--text-muted);
  transition: var(--transition);
}
.footer-col ul li a:hover { color: var(--primary-light); padding-left: 4px; }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  color: var(--text-muted);
}
.footer-bottom a { color: var(--text-muted); }
.footer-bottom a:hover { color: var(--primary-light); }
.update-time { font-size: 12px; color: rgba(255,255,255,0.3); }

/* ---- 内页Hero ---- */
.inner-hero {
  background: linear-gradient(135deg, #0d0d1a 0%, #1a0a2e 60%, #0a1628 100%);
  padding: 60px 0 50px;
  border-bottom: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}
.inner-hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(124,58,237,0.12) 0%, transparent 70%);
  pointer-events: none;
}
.inner-hero .page-title {
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 900;
  color: #fff;
  margin-bottom: 12px;
}
.inner-hero .page-desc {
  font-size: 15px;
  color: var(--text-muted);
  max-width: 600px;
  line-height: 1.8;
}

/* ---- 滚动到顶部按钮 ---- */
#scrollTop {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 44px;
  height: 44px;
  background: var(--gradient-btn);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  z-index: 999;
  box-shadow: 0 4px 16px rgba(124,58,237,0.4);
}
#scrollTop.show { opacity: 1; visibility: visible; }
#scrollTop:hover { transform: translateY(-3px); }

/* ---- 加载动画 ---- */
.lazy-img {
  opacity: 0;
  transition: opacity 0.5s ease;
}
.lazy-img.loaded { opacity: 1; }

/* ---- 搜索结果提示 ---- */
.search-hint {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  font-size: 13px;
  color: var(--text-muted);
  display: none;
  z-index: 100;
  margin-top: 4px;
}
.nav-search { position: relative; }
.nav-search:focus-within .search-hint { display: block; }

/* ---- 响应式 ---- */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .nav-menu { display: none; position: absolute; top: 64px; left: 0; right: 0; background: var(--bg-nav); flex-direction: column; padding: 16px 20px; border-bottom: 1px solid var(--border); gap: 4px; }
  .nav-menu.open { display: flex; }
  .nav-toggle { display: flex; }
  .nav-search { min-width: 140px; }
  .hero-banner { min-height: 420px; }
  .hero-stats { gap: 24px; }
  .footer-grid { grid-template-columns: 1fr; }
  .video-grid { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }
  .section { padding: 48px 0; }
}
@media (max-width: 480px) {
  .hero-content { padding: 60px 16px; }
  .80x0v78y { flex-direction: column; }
  .btn-primary, .btn-outline { justify-content: center; }
  .nav-search { display: none; }
  .video-grid { grid-template-columns: 1fr; }
}