/* ============================================
   海角社区 - 影视传媒视频社区 官方样式表
   品牌域名: nxqh.com.cn
   ============================================ */

/* === 基础重置与变量 === */
:root {
  --primary: #E8364F;
  --primary-dark: #C42A40;
  --secondary: #1A1A2E;
  --accent: #FF6B35;
  --bg-dark: #0F0F1A;
  --bg-card: #16213E;
  --bg-card-hover: #1C2A4A;
  --text-light: #F5F5F5;
  --text-muted: #A0A0B8;
  --text-dim: #6B6B80;
  --border-color: #2A2A45;
  --gradient-primary: linear-gradient(135deg, #E8364F 0%, #FF6B35 100%);
  --gradient-dark: linear-gradient(180deg, #0F0F1A 0%, #1A1A2E 100%);
  --shadow-card: 0 4px 24px rgba(0,0,0,0.3);
  --shadow-hover: 0 8px 40px rgba(232,54,79,0.2);
  --radius: 12px;
  --radius-sm: 8px;
  --transition: all 0.3s ease;
  --max-width: 1280px;
}

*, *::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-light);
  line-height: 1.7;
  overflow-x: hidden;
}

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;
}

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

.site-header.scrolled {
  background: rgba(15, 15, 26, 0.98);
  box-shadow: 0 2px 20px rgba(0,0,0,0.5);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

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

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

.site-logo span {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: 1px;
}

/* 主导航 */
.main-nav {
  display: flex;
  align-items: center;
  gap: 6px;
}

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

.main-nav a:hover,
.main-nav a.active {
  color: var(--primary);
  background: rgba(232, 54, 79, 0.1);
}

.main-nav .dropdown {
  position: relative;
}

.main-nav .dropdown-toggle {
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 4px;
}

.main-nav .dropdown-toggle::after {
  content: "\25BC";
  font-size: 0.6rem;
  transition: var(--transition);
}

.main-nav .dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  background: var(--secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 8px 0;
  min-width: 160px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: var(--transition);
  box-shadow: var(--shadow-card);
}

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

.main-nav .dropdown-menu a {
  display: block;
  padding: 8px 20px;
  border-radius: 0;
  font-size: 0.9rem;
}

.main-nav .dropdown-menu a:hover {
  background: rgba(232, 54, 79, 0.15);
}

/* 移动端菜单按钮 */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
}

.menu-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text-light);
  transition: var(--transition);
}

/* === 搜索栏 === */
.search-bar {
  background: var(--secondary);
  padding: 12px 0;
  border-bottom: 1px solid var(--border-color);
  margin-top: 70px;
}

.search-bar .container {
  display: flex;
  align-items: center;
  gap: 12px;
}

.search-bar .breadcrumb {
  font-size: 0.85rem;
  color: var(--text-muted);
  flex-shrink: 0;
}

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

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

.search-input-wrap {
  flex: 1;
  max-width: 520px;
  margin-left: auto;
  position: relative;
}

.search-input-wrap input {
  width: 100%;
  padding: 10px 44px 10px 16px;
  background: var(--bg-dark);
  border: 1px solid var(--border-color);
  border-radius: 24px;
  color: var(--text-light);
  font-size: 0.9rem;
  outline: none;
  transition: var(--transition);
}

.search-input-wrap input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(232, 54, 79, 0.15);
}

.search-input-wrap input::placeholder {
  color: var(--text-dim);
}

.search-input-wrap button {
  position: absolute;
  right: 4px;
  top: 50%;
  transform: translateY(-50%);
  background: var(--gradient-primary);
  border: none;
  color: #fff;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  transition: var(--transition);
}

.search-input-wrap button:hover {
  transform: translateY(-50%) scale(1.05);
}

/* === Hero Banner === */
.hero-section {
  position: relative;
  height: 75vh;
  min-height: 480px;
  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;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(15,15,26,0.92) 0%, rgba(15,15,26,0.6) 50%, rgba(15,15,26,0.3) 100%);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 600px;
  padding: 0 20px;
}

.hero-content h1 {
  font-size: 2.8rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 16px;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-content h1 span {
  display: block;
  font-size: 1.2rem;
  font-weight: 400;
  color: var(--text-muted);
  -webkit-text-fill-color: var(--text-muted);
  margin-top: 8px;
}

.hero-content p {
  font-size: 1.05rem;
  color: var(--text-muted);
  margin-bottom: 28px;
  line-height: 1.8;
}

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

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 32px;
  background: var(--gradient-primary);
  color: #fff;
  border: none;
  border-radius: 30px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(232, 54, 79, 0.4);
  color: #fff;
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 32px;
  background: transparent;
  color: var(--text-light);
  border: 2px solid var(--border-color);
  border-radius: 30px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
}

.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-2px);
}

/* === 通用区块标题 === */
.section-title {
  text-align: center;
  margin-bottom: 48px;
}

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

.section-title h2 .highlight {
  color: var(--primary);
}

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

.section-tag {
  display: inline-block;
  padding: 4px 14px;
  background: rgba(232, 54, 79, 0.12);
  color: var(--primary);
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 12px;
  letter-spacing: 1px;
  text-transform: uppercase;
}

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

.video-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
  border: 1px solid transparent;
}

.video-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(232, 54, 79, 0.3);
}

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

.video-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.video-card:hover .video-thumb img {
  transform: scale(1.08);
}

.video-play-btn {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.8);
  width: 60px;
  height: 60px;
  background: rgba(232, 54, 79, 0.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: var(--transition);
}

.video-thumb:hover .video-play-btn {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
}

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

.video-duration {
  position: absolute;
  bottom: 8px;
  right: 8px;
  background: rgba(0,0,0,0.75);
  color: #fff;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.78rem;
  font-weight: 500;
}

.video-info {
  padding: 16px;
}

.video-info h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 8px;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.video-info h3 a {
  color: var(--text-light);
}

.video-info h3 a:hover {
  color: var(--primary);
}

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

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

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

.video-tags span {
  padding: 2px 10px;
  background: rgba(232, 54, 79, 0.1);
  color: var(--primary);
  border-radius: 12px;
  font-size: 0.75rem;
}

/* === 服务/功能卡片 === */
.service-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

.service-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 32px 24px;
  text-align: center;
  transition: var(--transition);
  border: 1px solid var(--border-color);
}

.service-card:hover {
  transform: translateY(-4px);
  border-color: var(--primary);
  box-shadow: var(--shadow-hover);
}

.service-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  background: var(--gradient-primary);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
}

.service-card h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 10px;
}

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

/* === 专家展示 === */
.expert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px;
}

.expert-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 28px 20px;
  text-align: center;
  transition: var(--transition);
  border: 1px solid var(--border-color);
}

.expert-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-hover);
}

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

.expert-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

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

.expert-card .expert-title {
  font-size: 0.85rem;
  color: var(--primary);
  margin-bottom: 10px;
}

.expert-card p {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 16px;
  line-height: 1.6;
}

.expert-btns {
  display: flex;
  gap: 8px;
  justify-content: center;
}

.expert-btns a {
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 500;
  transition: var(--transition);
}

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

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

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

/* === 合作品牌 === */
.partner-logos {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 32px;
  align-items: center;
}

.partner-logos .partner-item {
  background: var(--bg-card);
  padding: 20px 32px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-muted);
  transition: var(--transition);
}

.partner-logos .partner-item:hover {
  border-color: var(--primary);
  color: var(--primary);
}

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

.faq-item {
  background: var(--bg-card);
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
  border: 1px solid var(--border-color);
  overflow: hidden;
  transition: var(--transition);
}

.faq-item:hover {
  border-color: rgba(232, 54, 79, 0.3);
}

.faq-question {
  padding: 18px 24px;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
  font-size: 0.95rem;
  transition: var(--transition);
}

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

.faq-question .faq-icon {
  font-size: 1.2rem;
  transition: transform 0.3s ease;
  color: var(--primary);
}

.faq-item.active .faq-question .faq-icon {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}

.faq-item.active .faq-answer {
  max-height: 300px;
}

.faq-answer p {
  padding: 0 24px 18px;
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.8;
}

/* === 用户评论 === */
.review-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

.review-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 24px;
  border: 1px solid var(--border-color);
  transition: var(--transition);
}

.review-card:hover {
  border-color: rgba(232, 54, 79, 0.3);
  box-shadow: var(--shadow-card);
}

.review-stars {
  color: #FFD700;
  font-size: 0.9rem;
  margin-bottom: 12px;
  letter-spacing: 2px;
}

.review-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 16px;
  font-style: italic;
}

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

.review-author-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 700;
  font-size: 0.9rem;
}

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

.review-author-info .date {
  font-size: 0.78rem;
  color: var(--text-dim);
}

/* === 联系信息 === */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px;
}

.contact-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 28px 24px;
  text-align: center;
  border: 1px solid var(--border-color);
}

.contact-card h4 {
  font-size: 1rem;
  margin-bottom: 12px;
  color: var(--primary);
}

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

.contact-card img {
  max-width: 160px;
  margin: 12px auto 0;
  border-radius: var(--radius-sm);
}

/* === 社交分享 === */
.share-btns {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.share-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 24px;
  border-radius: 24px;
  font-size: 0.9rem;
  font-weight: 500;
  color: #fff;
  transition: var(--transition);
}

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

.share-btn.wechat { background: #07C160; }
.share-btn.weibo { background: #E6162D; }
.share-btn.douyin { background: #161823; border: 1px solid #333; }
.share-btn.bilibili { background: #00A1D6; }

/* === 页脚 === */
.site-footer {
  background: var(--secondary);
  border-top: 1px solid var(--border-color);
  padding: 48px 0 24px;
  margin-top: 80px;
}

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

.footer-brand .footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}

.footer-brand .footer-logo img {
  height: 36px;
}

.footer-brand .footer-logo span {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--primary);
}

.footer-brand p {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 16px;
}

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

.footer-qrcodes .qr-item {
  text-align: center;
}

.footer-qrcodes .qr-item img {
  width: 100px;
  border-radius: var(--radius-sm);
  margin-bottom: 6px;
}

.footer-qrcodes .qr-item span {
  font-size: 0.75rem;
  color: var(--text-dim);
}

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

.footer-col ul li {
  margin-bottom: 8px;
}

.footer-col ul li a {
  font-size: 0.88rem;
  color: var(--text-muted);
}

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

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.82rem;
  color: var(--text-dim);
}

/* === 内页通用 === */
.page-hero {
  padding: 120px 0 48px;
  text-align: center;
  background: var(--gradient-dark);
}

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

.page-hero p {
  font-size: 1rem;
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto;
}

.page-content {
  padding: 48px 0;
}

/* === 区块间距 === */
.section {
  padding: 72px 0;
}

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

/* === 统计数字 === */
.stats-row {
  display: flex;
  justify-content: center;
  gap: 48px;
  flex-wrap: wrap;
  padding: 32px 0;
}

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

.stat-item .stat-num {
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
}

.stat-item .stat-label {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-top: 6px;
}

/* === 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(--bg-card);
  border-radius: var(--radius);
  padding: 28px 24px;
  text-align: center;
  border: 1px solid var(--border-color);
  counter-increment: step;
  position: relative;
}

.howto-step::before {
  content: counter(step);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--gradient-primary);
  border-radius: 50%;
  color: #fff;
  font-weight: 700;
  font-size: 1.1rem;
  margin: 0 auto 16px;
}

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

.howto-step p {
  font-size: 0.88rem;
  color: var(--text-muted);
}

/* === 社区功能 === */
.community-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 20px;
}

.community-item {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 24px 16px;
  text-align: center;
  border: 1px solid var(--border-color);
  transition: var(--transition);
}

.community-item:hover {
  border-color: var(--primary);
  transform: translateY(-3px);
}

.community-item .comm-icon {
  font-size: 2rem;
  margin-bottom: 12px;
}

.community-item h4 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 6px;
}

.community-item p {
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* === MCP前端代码区 === */
.mcp-widget {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 20px;
  margin-top: 24px;
}

.mcp-widget .mcp-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
  font-weight: 600;
  color: var(--primary);
}

.mcp-widget .mcp-status {
  display: inline-block;
  width: 8px;
  height: 8px;
  background: #07C160;
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.mcp-widget .mcp-info {
  font-size: 0.85rem;
  color: var(--text-muted);
}

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

@media (max-width: 768px) {
  .menu-toggle {
    display: flex;
  }

  .main-nav {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: var(--secondary);
    flex-direction: column;
    padding: 20px;
    gap: 4px;
    transform: translateY(-120%);
    transition: var(--transition);
    border-bottom: 1px solid var(--border-color);
  }

  .main-nav.open {
    transform: translateY(0);
  }

  .main-nav a {
    width: 100%;
    text-align: center;
  }

  .main-nav .dropdown-menu {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    border: none;
    background: transparent;
  }

  .hero-content h1 {
    font-size: 2rem;
  }

  .hero-section {
    height: 60vh;
  }

  .section-title h2 {
    font-size: 1.6rem;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  .stats-row {
    gap: 24px;
  }

  .stat-item .stat-num {
    font-size: 1.8rem;
  }

  .video-grid {
    grid-template-columns: 1fr;
  }

  .search-bar .container {
    flex-direction: column;
  }

  .search-input-wrap {
    max-width: 100%;
    margin-left: 0;
  }
}

@media (max-width: 480px) {
  .hero-content h1 {
    font-size: 1.6rem;
  }

  .hero-btns {
    flex-direction: column;
  }

  .btn-primary, .btn-outline {
    width: 100%;
    justify-content: center;
  }

  .container {
    padding: 0 16px;
  }
}

/* === 懒加载占位 === */
img[data-src] {
  opacity: 0.3;
  transition: opacity 0.5s ease;
}

img[data-src].loaded,
img:not([data-src]) {
  opacity: 1;
}

/* === 内页星标专题 === */
.star-profile {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 40px;
  align-items: start;
}

.star-profile .star-photo {
  border-radius: var(--radius);
  overflow: hidden;
}

.star-profile .star-photo img {
  width: 100%;
  border-radius: var(--radius);
}

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

.star-profile .star-detail .star-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.star-profile .star-detail .star-tags span {
  padding: 4px 14px;
  background: rgba(232, 54, 79, 0.12);
  color: var(--primary);
  border-radius: 16px;
  font-size: 0.82rem;
}

.star-profile .star-detail p {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 16px;
}

@media (max-width: 768px) {
  .star-profile {
    grid-template-columns: 1fr;
  }
}

/* === 滚动动画 === */
.fade-in {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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