/* ============================================
   国产主播 - 原创样式表
   品牌：国产主播 | 域名：zzjjsl.cn
   定位：影视传媒公司 + 视频社区
   ============================================ */

/* === CSS变量 === */
:root {
  --primary: #FF2D55;
  --primary-dark: #D4234A;
  --secondary: #1A1A2E;
  --accent: #FFB800;
  --bg-dark: #0F0F1A;
  --bg-card: #1E1E30;
  --bg-card-hover: #2A2A42;
  --text-white: #FFFFFF;
  --text-light: #B8B8CC;
  --text-muted: #7A7A8E;
  --gradient-primary: linear-gradient(135deg, #FF2D55 0%, #FF6B35 100%);
  --gradient-dark: linear-gradient(180deg, #0F0F1A 0%, #1A1A2E 100%);
  --gradient-card: linear-gradient(145deg, #1E1E30 0%, #16162A 100%);
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.4);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.5);
  --shadow-glow: 0 0 20px rgba(255,45,85,0.3);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --transition: all 0.3s ease;
  --max-width: 1280px;
}

/* === 重置与基础 === */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg-dark);
  color: var(--text-white);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: var(--transition);
}

a:hover {
  color: var(--accent);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

ul, ol {
  list-style: none;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

/* === 顶部导航 === */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(15, 15, 26, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  transition: var(--transition);
}

.site-header.scrolled {
  background: rgba(15, 15, 26, 0.98);
  box-shadow: var(--shadow-md);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.site-logo img {
  height: 42px;
  width: auto;
}

.site-logo span {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-white);
  white-space: nowrap;
}

/* 主导航 */
.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.main-nav a {
  color: var(--text-light);
  font-size: 0.95rem;
  font-weight: 500;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
  white-space: nowrap;
  position: relative;
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--text-white);
  background: rgba(255,45,85,0.12);
}

.main-nav a.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 3px;
  background: var(--primary);
  border-radius: 2px;
}

/* 下拉菜单 */
.nav-dropdown {
  position: relative;
}

.nav-dropdown .dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 160px;
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-md);
  padding: 8px 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: var(--transition);
  box-shadow: var(--shadow-lg);
}

.nav-dropdown:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-menu a {
  display: block;
  padding: 10px 20px;
  font-size: 0.9rem;
  color: var(--text-light);
  border-radius: 0;
}

.dropdown-menu a:hover {
  background: rgba(255,45,85,0.1);
  color: var(--primary);
}

/* 搜索框 */
.search-bar-wrap {
  background: rgba(30, 30, 48, 0.8);
  border-bottom: 1px solid rgba(255,255,255,0.04);
  padding: 12px 0;
  margin-top: 68px;
}

.search-bar {
  max-width: 640px;
  margin: 0 auto;
  display: flex;
  gap: 0;
  position: relative;
}

.search-bar input {
  flex: 1;
  background: var(--bg-card);
  border: 2px solid rgba(255,45,85,0.2);
  border-right: none;
  border-radius: var(--radius-md) 0 0 var(--radius-md);
  padding: 12px 20px;
  font-size: 0.95rem;
  color: var(--text-white);
  outline: none;
  transition: var(--transition);
}

.search-bar input::placeholder {
  color: var(--text-muted);
}

.search-bar input:focus {
  border-color: var(--primary);
}

.search-bar button {
  background: var(--gradient-primary);
  border: none;
  padding: 12px 28px;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  color: white;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}

.search-bar button:hover {
  opacity: 0.9;
  transform: scale(1.02);
}

/* 移动端菜单按钮 */
.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: var(--text-white);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 8px;
}

/* === Hero Banner === */
.hero-section {
  position: relative;
  height: 560px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  filter: brightness(0.4);
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(15,15,26,0.3) 0%, rgba(15,15,26,0.8) 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 0 20px;
  max-width: 800px;
}

.hero-content h1 {
  font-size: 2.8rem;
  font-weight: 800;
  margin-bottom: 16px;
  line-height: 1.3;
  background: linear-gradient(135deg, #fff 0%, #FFB800 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-content h1 span {
  color: var(--primary);
  -webkit-text-fill-color: var(--primary);
}

.hero-content p {
  font-size: 1.15rem;
  color: var(--text-light);
  margin-bottom: 32px;
  line-height: 1.8;
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin-bottom: 28px;
}

.hero-tags span {
  background: rgba(255,45,85,0.15);
  border: 1px solid rgba(255,45,85,0.3);
  color: var(--primary);
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 500;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--gradient-primary);
  color: white;
  padding: 14px 36px;
  border-radius: var(--radius-xl);
  font-size: 1rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 30px rgba(255,45,85,0.5);
  color: white;
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: var(--text-white);
  padding: 14px 36px;
  border-radius: var(--radius-xl);
  font-size: 1rem;
  font-weight: 600;
  border: 2px solid rgba(255,255,255,0.2);
  cursor: pointer;
  transition: var(--transition);
}

.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(255,45,85,0.08);
}

.hero-btns {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* === 通用区块标题 === */
.section {
  padding: 72px 0;
}

.section-alt {
  background: var(--secondary);
}

.section-header {
  text-align: center;
  margin-bottom: 48px;
}

.section-header h2 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-white);
}

.section-header h2 span {
  color: var(--primary);
}

.section-header p {
  font-size: 1rem;
  color: var(--text-light);
  max-width: 600px;
  margin: 0 auto;
}

.section-header .tag {
  display: inline-block;
  background: rgba(255,45,85,0.12);
  color: var(--primary);
  padding: 4px 14px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 12px;
  letter-spacing: 1px;
}

/* === 视频卡片 === */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}

.video-card {
  background: var(--gradient-card);
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.06);
  transition: var(--transition);
  cursor: pointer;
}

.video-card:hover {
  transform: translateY(-4px);
  border-color: rgba(255,45,85,0.3);
  box-shadow: var(--shadow-glow);
}

.video-thumb {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
}

.video-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.video-card:hover .video-thumb img {
  transform: scale(1.05);
}

.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;
}

.video-play-btn .play-icon {
  width: 60px;
  height: 60px;
  background: var(--primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 20px rgba(255,45,85,0.5);
  transition: var(--transition);
}

.video-play-btn .play-icon::after {
  content: '';
  display: block;
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 10px 0 10px 18px;
  border-color: transparent transparent transparent white;
  margin-left: 4px;
}

.video-card:hover .play-icon {
  transform: scale(1.1);
}

.video-duration {
  position: absolute;
  bottom: 8px;
  right: 8px;
  background: rgba(0,0,0,0.75);
  color: white;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.8rem;
  font-weight: 500;
}

.video-info {
  padding: 16px;
}

.video-info h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 8px;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.video-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.video-meta span {
  display: flex;
  align-items: center;
  gap: 4px;
}

.video-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 10px;
}

.video-tags span {
  background: rgba(255,184,0,0.1);
  color: var(--accent);
  padding: 2px 10px;
  border-radius: 12px;
  font-size: 0.75rem;
}

/* === 分类模块网格 === */
.category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

.category-card {
  background: var(--gradient-card);
  border-radius: var(--radius-md);
  padding: 28px;
  border: 1px solid rgba(255,255,255,0.06);
  transition: var(--transition);
}

.category-card:hover {
  transform: translateY(-4px);
  border-color: rgba(255,45,85,0.3);
  box-shadow: var(--shadow-glow);
}

.category-card .icon {
  width: 52px;
  height: 52px;
  background: rgba(255,45,85,0.12);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 16px;
}

.category-card h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.category-card p {
  font-size: 0.9rem;
  color: var(--text-light);
  line-height: 1.7;
}

/* === 专家展示 === */
.expert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

.expert-card {
  background: var(--gradient-card);
  border-radius: var(--radius-md);
  padding: 28px;
  text-align: center;
  border: 1px solid rgba(255,255,255,0.06);
  transition: var(--transition);
}

.expert-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
  border-color: rgba(255,45,85,0.3);
}

.expert-card .avatar {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto 16px;
  border: 3px solid var(--primary);
}

.expert-card h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.expert-card .title {
  font-size: 0.85rem;
  color: var(--primary);
  margin-bottom: 12px;
}

.expert-card p {
  font-size: 0.88rem;
  color: var(--text-light);
  line-height: 1.7;
  margin-bottom: 16px;
}

.expert-card .awards {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  justify-content: center;
  margin-bottom: 16px;
}

.expert-card .awards span {
  background: rgba(255,184,0,0.1);
  color: var(--accent);
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 0.75rem;
}

.expert-btns {
  display: flex;
  gap: 10px;
  justify-content: center;
}

.expert-btns a {
  padding: 8px 18px;
  border-radius: var(--radius-xl);
  font-size: 0.85rem;
  font-weight: 500;
}

.expert-btns .btn-sm-primary {
  background: var(--primary);
  color: white;
}

.expert-btns .btn-sm-outline {
  border: 1px solid rgba(255,255,255,0.2);
  color: var(--text-light);
}

.expert-btns .btn-sm-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
}

/* === 合作品牌 === */
.partner-wall {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 40px;
  flex-wrap: wrap;
  padding: 20px 0;
}

.partner-wall img {
  height: 60px;
  opacity: 0.6;
  transition: var(--transition);
  filter: grayscale(100%);
}

.partner-wall img:hover {
  opacity: 1;
  filter: grayscale(0%);
}

/* === FAQ === */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: var(--gradient-card);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  overflow: hidden;
}

.faq-question {
  padding: 20px 24px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: var(--transition);
}

.faq-question:hover {
  color: var(--primary);
}

.faq-question .arrow {
  transition: transform 0.3s ease;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.faq-item.active .faq-question .arrow {
  transform: rotate(180deg);
}

.faq-answer {
  padding: 0 24px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
}

.faq-item.active .faq-answer {
  padding: 0 24px 20px;
  max-height: 300px;
}

.faq-answer p {
  font-size: 0.92rem;
  color: var(--text-light);
  line-height: 1.8;
}

/* === 用户评论 === */
.review-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}

.review-card {
  background: var(--gradient-card);
  border-radius: var(--radius-md);
  padding: 24px;
  border: 1px solid rgba(255,255,255,0.06);
}

.review-card .stars {
  color: var(--accent);
  font-size: 0.9rem;
  margin-bottom: 12px;
  letter-spacing: 2px;
}

.review-card blockquote {
  font-size: 0.92rem;
  color: var(--text-light);
  line-height: 1.8;
  margin-bottom: 16px;
  font-style: italic;
}

.review-user {
  display: flex;
  align-items: center;
  gap: 12px;
}

.review-user img {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  object-fit: cover;
}

.review-user .name {
  font-weight: 600;
  font-size: 0.9rem;
}

.review-user .role {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* === How-To指南 === */
.howto-steps {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 24px;
  counter-reset: step;
}

.howto-step {
  background: var(--gradient-card);
  border-radius: var(--radius-md);
  padding: 28px;
  border: 1px solid rgba(255,255,255,0.06);
  position: relative;
  counter-increment: step;
}

.howto-step::before {
  content: counter(step);
  position: absolute;
  top: -12px;
  left: 20px;
  width: 32px;
  height: 32px;
  background: var(--primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 700;
  color: white;
  line-height: 32px;
  text-align: center;
}

.howto-step h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 8px;
  margin-top: 8px;
}

.howto-step p {
  font-size: 0.88rem;
  color: var(--text-light);
  line-height: 1.7;
}

/* === 联系信息 === */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

.contact-card {
  background: var(--gradient-card);
  border-radius: var(--radius-md);
  padding: 28px;
  border: 1px solid rgba(255,255,255,0.06);
  text-align: center;
}

.contact-card .icon {
  font-size: 2rem;
  margin-bottom: 12px;
}

.contact-card h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.contact-card p {
  font-size: 0.9rem;
  color: var(--text-light);
}

/* === 社交分享 === */
.share-btns {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

.share-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius-xl);
  font-size: 0.88rem;
  font-weight: 500;
  color: white;
  transition: var(--transition);
}

.share-btn:hover {
  transform: translateY(-2px);
  color: white;
}

.share-btn.wechat { background: #07C160; }
.share-btn.weibo { background: #E6162D; }
.share-btn.douyin { background: #161823; border: 1px solid rgba(255,255,255,0.2); }
.share-btn.bilibili { background: #00A1D6; }

/* === 页脚 === */
.site-footer {
  background: var(--secondary);
  border-top: 1px solid rgba(255,255,255,0.06);
  padding: 60px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand img {
  height: 40px;
  margin-bottom: 16px;
}

.footer-brand p {
  font-size: 0.88rem;
  color: var(--text-light);
  line-height: 1.8;
  margin-bottom: 16px;
}

.footer-col h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--text-white);
}

.footer-col a {
  display: block;
  font-size: 0.88rem;
  color: var(--text-light);
  padding: 4px 0;
}

.footer-col a:hover {
  color: var(--primary);
}

.footer-qrcodes {
  display: flex;
  gap: 20px;
  margin-top: 16px;
}

.footer-qrcodes img {
  width: 100px;
  height: 100px;
  border-radius: var(--radius-sm);
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding: 20px 0;
  text-align: center;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.footer-bottom a {
  color: var(--text-muted);
}

.footer-bottom a:hover {
  color: var(--primary);
}

/* === 面包屑 === */
.breadcrumb {
  padding: 16px 0;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.breadcrumb a {
  color: var(--text-muted);
}

.breadcrumb a:hover {
  color: var(--primary);
}

.breadcrumb span {
  margin: 0 8px;
}

/* === 内页Banner === */
.page-banner {
  position: relative;
  height: 320px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  margin-top: 68px;
}

.page-banner .bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  filter: brightness(0.3) blur(2px);
}

.page-banner .overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(15,15,26,0.4) 0%, rgba(15,15,26,0.9) 100%);
}

.page-banner .content {
  position: relative;
  z-index: 2;
  text-align: center;
}

.page-banner h1 {
  font-size: 2.2rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.page-banner p {
  font-size: 1rem;
  color: var(--text-light);
}

/* === 统计数字 === */
.stats-row {
  display: flex;
  justify-content: center;
  gap: 48px;
  flex-wrap: wrap;
  padding: 20px 0;
}

.stat-item {
  text-align: center;
}

.stat-item .num {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.2;
}

.stat-item .label {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 4px;
}

/* === 标签云 === */
.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
}

.tag-cloud a {
  background: rgba(255,45,85,0.1);
  color: var(--text-light);
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 0.85rem;
  border: 1px solid rgba(255,255,255,0.06);
  transition: var(--transition);
}

.tag-cloud a:hover {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}

/* === 明星专题页 === */
.star-profile {
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: 40px;
  align-items: start;
}

.star-photo {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 2px solid rgba(255,45,85,0.3);
}

.star-photo img {
  width: 100%;
  aspect-ratio: 3/4;
  object-fit: cover;
}

.star-info h2 {
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.star-info .subtitle {
  font-size: 1rem;
  color: var(--primary);
  margin-bottom: 20px;
}

.star-info .bio {
  font-size: 0.95rem;
  color: var(--text-light);
  line-height: 1.9;
  margin-bottom: 24px;
}

.star-info .details {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 24px;
}

.star-info .details dt {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.star-info .details dd {
  font-size: 0.95rem;
  font-weight: 500;
}

/* === 回到顶部 === */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 48px;
  height: 48px;
  background: var(--primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.2rem;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  box-shadow: var(--shadow-glow);
  z-index: 999;
  border: none;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  transform: translateY(-4px);
}

/* === 懒加载 === */
.lazy {
  opacity: 0;
  transition: opacity 0.5s ease;
}

.lazy.loaded {
  opacity: 1;
}

/* === 动画 === */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* === 响应式 === */
@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  
  .star-profile {
    grid-template-columns: 280px 1fr;
  }
}

@media (max-width: 768px) {
  html {
    font-size: 15px;
  }
  
  .main-nav {
    display: none;
    position: fixed;
    top: 68px;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(15,15,26,0.98);
    flex-direction: column;
    padding: 20px;
    gap: 4px;
    overflow-y: auto;
  }
  
  .main-nav.open {
    display: flex;
  }
  
  .main-nav a {
    padding: 14px 20px;
    font-size: 1rem;
  }
  
  .nav-dropdown .dropdown-menu {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    background: rgba(255,255,255,0.03);
    border: none;
    box-shadow: none;
    padding-left: 20px;
  }
  
  .mobile-menu-btn {
    display: block;
  }
  
  .hero-section {
    height: 440px;
  }
  
  .hero-content h1 {
    font-size: 1.8rem;
  }
  
  .section {
    padding: 48px 0;
  }
  
  .section-header h2 {
    font-size: 1.5rem;
  }
  
  .video-grid {
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  
  .star-profile {
    grid-template-columns: 1fr;
  }
  
  .star-photo {
    max-width: 300px;
    margin: 0 auto;
  }
  
  .stats-row {
    gap: 24px;
  }
  
  .stat-item .num {
    font-size: 1.6rem;
  }
}

@media (max-width: 480px) {
  .hero-content h1 {
    font-size: 1.5rem;
  }
  
  .hero-btns {
    flex-direction: column;
    align-items: center;
  }
  
  .search-bar {
    flex-direction: column;
    gap: 8px;
  }
  
  .search-bar input {
    border-radius: var(--radius-md);
    border-right: 2px solid rgba(255,45,85,0.2);
  }
  
  .search-bar button {
    border-radius: var(--radius-md);
  }
  
  .video-grid {
    grid-template-columns: 1fr;
  }
  
  .category-grid {
    grid-template-columns: 1fr;
  }
}

/* === 页面内容区 === */
.page-content {
  padding: 40px 0 60px;
}

.page-content h2 {
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 20px;
  margin-top: 40px;
}

.page-content h2:first-child {
  margin-top: 0;
}

.page-content p {
  font-size: 0.95rem;
  color: var(--text-light);
  line-height: 1.9;
  margin-bottom: 16px;
}

/* === 社区功能卡片 === */
.community-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 20px;
}

.community-card {
  background: var(--gradient-card);
  border-radius: var(--radius-md);
  padding: 24px;
  text-align: center;
  border: 1px solid rgba(255,255,255,0.06);
  transition: var(--transition);
}

.community-card:hover {
  border-color: rgba(255,184,0,0.3);
  transform: translateY(-3px);
}

.community-card .emoji {
  font-size: 2.2rem;
  margin-bottom: 12px;
}

.community-card h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.community-card p {
  font-size: 0.85rem;
  color: var(--text-light);
}

/* === AI功能展示 === */
.ai-features {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}

.ai-card {
  background: var(--gradient-card);
  border-radius: var(--radius-md);
  padding: 28px;
  border: 1px solid rgba(255,255,255,0.06);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.ai-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-primary);
}

.ai-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}

.ai-card h4 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 10px;
}

.ai-card p {
  font-size: 0.9rem;
  color: var(--text-light);
  line-height: 1.7;
}

/* === 通知横幅 === */
.notice-bar {
  background: var(--gradient-primary);
  padding: 10px 0;
  text-align: center;
  font-size: 0.88rem;
  font-weight: 500;
}

.notice-bar a {
  color: white;
  text-decoration: underline;
}

/* === 内容文章样式 === */
.article-content {
  max-width: 800px;
  margin: 0 auto;
}

.article-content h3 {
  font-size: 1.3rem;
  font-weight: 600;
  margin: 32px 0 16px;
  color: var(--text-white);
}

.article-content p {
  margin-bottom: 16px;
  line-height: 1.9;
}

.article-content ul {
  padding-left: 20px;
  margin-bottom: 16px;
}

.article-content ul li {
  list-style: disc;
  font-size: 0.95rem;
  color: var(--text-light);
  line-height: 1.8;
  margin-bottom: 6px;
}

/* === 联系表单 === */
.contact-form-wrap {
  max-width: 720px;
  margin: 0 auto;
}

.contact-form {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
}

.form-row {
  display: flex;
  gap: 20px;
  width: 100%;
}

.form-group {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.form-group label {
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-white);
}

.form-group input,
.form-group select,
.form-group textarea {
  background: var(--bg-card);
  border: 2px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  font-size: 0.95rem;
  color: var(--text-white);
  outline: none;
  transition: var(--transition);
  font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--primary);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-muted);
}

.form-group select {
  cursor: pointer;
  appearance: auto;
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

@media (max-width: 768px) {
  .form-row {
    flex-direction: column;
  }
}

/* === 关于页面内容 === */
.about-content {
  max-width: 900px;
  margin: 0 auto;
}

.about-content h3 {
  font-size: 1.4rem;
  font-weight: 700;
  margin: 36px 0 16px;
  color: var(--text-white);
  padding-left: 16px;
  border-left: 4px solid var(--primary);
}

.about-content h3:first-child {
  margin-top: 0;
}

.about-content p {
  font-size: 0.95rem;
  color: var(--text-light);
  line-height: 1.9;
  margin-bottom: 16px;
}

/* === 搜索栏在内页不需要margin-top === */
.page-banner + .container .breadcrumb {
  margin-top: 0;
}

/* === 打印样式 === */
@media print {
  .site-header,
  .search-bar-wrap,
  .back-to-top,
  .mobile-menu-btn {
    display: none !important;
  }
  
  body {
    background: white;
    color: #333;
  }
}