/* ============================================
   玩物社区 影视传媒 - 原创样式表
   品牌: 玩物社区 | 域名: rzmjgqz.cn
   配色: 深紫黑 + 活力橙 + 科技青
   ============================================ */

/* === CSS Variables === */
:root {
  --primary: #1A0A2E;
  --secondary: #FF6B35;
  --accent: #00D4AA;
  --bg-dark: #0D0D1A;
  --bg-card: #1E1433;
  --bg-card-hover: #2A1D45;
  --text-main: #E8E6F0;
  --text-muted: #9B95A8;
  --text-bright: #FFFFFF;
  --gradient-main: linear-gradient(135deg, #1A0A2E 0%, #2D1B4E 100%);
  --gradient-accent: linear-gradient(135deg, #FF6B35 0%, #FF8F5E 100%);
  --gradient-tech: linear-gradient(135deg, #00D4AA 0%, #00F5C8 100%);
  --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
  --shadow-hover: 0 12px 48px rgba(255, 107, 53, 0.2);
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 20px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --max-width: 1280px;
}

/* === Reset & Base === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  background-color: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--secondary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--accent); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }
h1, h2, h3, h4, h5, h6 { line-height: 1.3; color: var(--text-bright); font-weight: 700; }

/* === Container === */
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 20px; }
.section-wrap { padding: 80px 0; }
.section-wrap:nth-child(even) { background: var(--primary); }

/* === Header & Navigation === */
.site-header {
  position: fixed; top: 0; left: 0; width: 100%; z-index: 1000;
  background: rgba(13, 13, 26, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255, 107, 53, 0.15);
  transition: var(--transition);
}
.header-inner {
  max-width: var(--max-width); margin: 0 auto; padding: 0 20px;
  display: flex; align-items: center; justify-content: space-between; height: 68px;
}
.site-logo { display: flex; align-items: center; gap: 10px; }
.site-logo img { height: 42px; width: auto; }
.site-logo span { font-size: 1.4rem; font-weight: 800; color: var(--secondary); letter-spacing: 1px; }
.main-nav { display: flex; align-items: center; gap: 6px; }
.main-nav a {
  padding: 8px 14px; border-radius: var(--radius-sm);
  font-size: 0.9rem; color: var(--text-main); font-weight: 500;
  transition: var(--transition); white-space: nowrap;
}
.main-nav a:hover, .main-nav a.active {
  color: var(--secondary); background: rgba(255, 107, 53, 0.1);
}
.nav-toggle { display: none; cursor: pointer; padding: 8px; }
.nav-toggle span {
  display: block; width: 24px; height: 2px; background: var(--text-main);
  margin: 5px 0; transition: var(--transition); border-radius: 2px;
}

/* === Search Bar === */
.search-bar {
  background: var(--primary); padding: 14px 0;
  border-bottom: 1px solid rgba(255, 107, 53, 0.08);
}
.search-bar .container { display: flex; justify-content: center; }
.search-box {
  display: flex; max-width: 640px; width: 100%;
  background: var(--bg-card); border-radius: 50px;
  border: 1px solid rgba(255, 107, 53, 0.2);
  overflow: hidden; transition: var(--transition);
}
.search-box:focus-within { border-color: var(--secondary); box-shadow: 0 0 20px rgba(255, 107, 53, 0.15); }
.search-box input {
  flex: 1; padding: 12px 24px; background: transparent;
  border: none; color: var(--text-main); font-size: 0.95rem; outline: none;
}
.search-box input::placeholder { color: var(--text-muted); }
.search-box button {
  padding: 12px 28px; background: var(--gradient-accent);
  border: none; color: #fff; font-size: 0.95rem; cursor: pointer;
  font-weight: 600; transition: var(--transition);
}
.search-box button:hover { opacity: 0.9; }

/* === Hero Banner === */
.hero-banner {
  position: relative; min-height: 75vh; display: flex; align-items: center;
  justify-content: center; overflow: hidden; margin-top: 68px;
}
.hero-banner .hero-bg {
  position: absolute; top: 0; left: 0; width: 100%; height: 100%;
  object-fit: cover; filter: brightness(0.45);
}
.hero-banner .hero-overlay {
  position: absolute; top: 0; left: 0; width: 100%; height: 100%;
  background: linear-gradient(180deg, rgba(13,13,26,0.3) 0%, rgba(13,13,26,0.85) 100%);
}
.hero-content {
  position: relative; z-index: 2; text-align: center;
  max-width: 800px; padding: 40px 20px;
}
.hero-content h1 { font-size: 3rem; margin-bottom: 16px; text-shadow: 0 4px 20px rgba(0,0,0,0.5); }
.hero-content h1 .brand-highlight { color: var(--secondary); }
.hero-content p { font-size: 1.15rem; color: var(--text-muted); margin-bottom: 32px; line-height: 1.8; }
.hero-btns { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.btn-primary {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 32px; background: var(--gradient-accent);
  color: #fff; border-radius: 50px; font-weight: 600; font-size: 1rem;
  border: none; cursor: pointer; transition: var(--transition);
  box-shadow: 0 4px 20px rgba(255, 107, 53, 0.3);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(255, 107, 53, 0.4); color: #fff; }
.btn-outline {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 32px; background: transparent;
  color: var(--accent); border-radius: 50px; font-weight: 600; font-size: 1rem;
  border: 2px solid var(--accent); cursor: pointer; transition: var(--transition);
}
.btn-outline:hover { background: var(--accent); color: var(--bg-dark); }

/* === Section Headers === */
.section-header { text-align: center; margin-bottom: 50px; }
.section-header h2 { font-size: 2.2rem; margin-bottom: 12px; }
.section-header h2 .highlight { color: var(--secondary); }
.section-header .subtitle { color: var(--text-muted); font-size: 1.05rem; max-width: 600px; margin: 0 auto; }
.section-tag {
  display: inline-block; padding: 4px 16px; border-radius: 50px;
  background: rgba(255, 107, 53, 0.1); color: var(--secondary);
  font-size: 0.85rem; font-weight: 600; margin-bottom: 12px;
  border: 1px solid rgba(255, 107, 53, 0.2);
}

/* === Video Card Grid === */
.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 rgba(255, 107, 53, 0.08);
}
.video-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(255, 107, 53, 0.25);
}
.video-thumb {
  position: relative; padding-top: 56.25%; overflow: hidden;
  background: var(--primary);
}
.video-thumb img {
  position: absolute; top: 0; left: 0; width: 100%; height: 100%;
  object-fit: cover; transition: var(--transition);
}
.video-card:hover .video-thumb img { transform: scale(1.05); }
.video-play-btn {
  position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);
  width: 60px; height: 60px; background: rgba(255, 107, 53, 0.9);
  border-radius: 50%; display: flex; align-items: center; justify-content: center;
  opacity: 0; transition: var(--transition); cursor: pointer;
  box-shadow: 0 4px 20px rgba(255, 107, 53, 0.4);
}
.video-card:hover .video-play-btn { opacity: 1; }
.video-play-btn::after {
  content: ''; width: 0; height: 0;
  border-style: solid; border-width: 10px 0 10px 18px;
  border-color: transparent transparent transparent #fff;
  margin-left: 3px;
}
.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: 0.8rem;
}
.video-info { padding: 16px; }
.video-info h3 { font-size: 1rem; margin-bottom: 8px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.video-meta { display: flex; gap: 16px; color: var(--text-muted); font-size: 0.82rem; flex-wrap: wrap; }
.video-meta span { display: flex; align-items: center; gap: 4px; }
.video-tags { display: flex; gap: 6px; margin-top: 10px; flex-wrap: wrap; }
.video-tags .tag {
  padding: 3px 10px; background: rgba(0, 212, 170, 0.1);
  color: var(--accent); border-radius: 50px; font-size: 0.75rem;
  border: 1px solid rgba(0, 212, 170, 0.2);
}

/* === Feature Cards === */
.feature-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}
.feature-card {
  background: var(--bg-card); border-radius: var(--radius);
  padding: 32px 24px; transition: var(--transition);
  border: 1px solid rgba(255, 107, 53, 0.08);
  text-align: center;
}
.feature-card:hover {
  transform: translateY(-4px); box-shadow: var(--shadow-hover);
  border-color: rgba(255, 107, 53, 0.2);
}
.feature-icon {
  width: 64px; height: 64px; margin: 0 auto 20px;
  background: var(--gradient-accent); border-radius: 16px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.8rem;
}
.feature-card h3 { font-size: 1.15rem; margin-bottom: 10px; }
.feature-card p { color: var(--text-muted); font-size: 0.92rem; }

/* === Expert Section === */
.expert-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 28px;
}
.expert-card {
  background: var(--bg-card); border-radius: var(--radius);
  overflow: hidden; transition: var(--transition);
  border: 1px solid rgba(255, 107, 53, 0.08);
}
.expert-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.expert-avatar {
  width: 100%; aspect-ratio: 1; overflow: hidden;
}
.expert-avatar img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
.expert-card:hover .expert-avatar img { transform: scale(1.05); }
.expert-info { padding: 20px; text-align: center; }
.expert-info h3 { font-size: 1.1rem; margin-bottom: 4px; }
.expert-info .role { color: var(--secondary); font-size: 0.88rem; margin-bottom: 10px; }
.expert-info p { color: var(--text-muted); font-size: 0.85rem; margin-bottom: 14px; }
.expert-btns { display: flex; gap: 10px; justify-content: center; }
.expert-btns a {
  padding: 8px 18px; border-radius: 50px; font-size: 0.82rem; font-weight: 600;
}
.btn-sm-primary { background: var(--gradient-accent); color: #fff; }
.btn-sm-outline { border: 1px solid var(--accent); color: var(--accent); }
.btn-sm-outline:hover { background: var(--accent); color: var(--bg-dark); }

/* === FAQ Section === */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  background: var(--bg-card); border-radius: var(--radius);
  margin-bottom: 12px; overflow: hidden;
  border: 1px solid rgba(255, 107, 53, 0.08);
  transition: var(--transition);
}
.faq-item:hover { border-color: rgba(255, 107, 53, 0.2); }
.faq-question {
  padding: 20px 24px; cursor: pointer;
  display: flex; justify-content: space-between; align-items: center;
  font-weight: 600; font-size: 1rem; color: var(--text-bright);
  transition: var(--transition);
}
.faq-question:hover { color: var(--secondary); }
.faq-question .faq-icon {
  width: 28px; height: 28px; border-radius: 50%;
  background: rgba(255, 107, 53, 0.15); display: flex;
  align-items: center; justify-content: center;
  transition: var(--transition); flex-shrink: 0; margin-left: 12px;
}
.faq-question .faq-icon::after { content: '+'; color: var(--secondary); font-size: 1.2rem; }
.faq-item.active .faq-question .faq-icon { transform: rotate(45deg); }
.faq-answer {
  max-height: 0; overflow: hidden; transition: max-height 0.4s ease;
}
.faq-answer-inner { padding: 0 24px 20px; color: var(--text-muted); font-size: 0.95rem; line-height: 1.8; }
.faq-item.active .faq-answer { max-height: 500px; }

/* === Reviews === */
.review-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}
.review-card {
  background: var(--bg-card); border-radius: var(--radius);
  padding: 28px; transition: var(--transition);
  border: 1px solid rgba(255, 107, 53, 0.08);
}
.review-card:hover { border-color: rgba(255, 107, 53, 0.2); }
.review-stars { color: var(--secondary); font-size: 1rem; margin-bottom: 12px; letter-spacing: 2px; }
.review-text { color: var(--text-muted); font-size: 0.92rem; line-height: 1.8; margin-bottom: 16px; font-style: italic; }
.review-author { display: flex; align-items: center; gap: 12px; }
.review-author-avatar {
  width: 42px; height: 42px; border-radius: 50%;
  background: var(--gradient-accent); display: flex;
  align-items: center; justify-content: center;
  color: #fff; font-weight: 700; font-size: 1rem;
}
.review-author-info .name { font-weight: 600; font-size: 0.9rem; color: var(--text-bright); }
.review-author-info .date { font-size: 0.8rem; color: var(--text-muted); }

/* === Cooperation === */
.brand-wall {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 20px; margin-bottom: 40px;
}
.brand-wall-item {
  background: var(--bg-card); border-radius: var(--radius);
  padding: 24px; display: flex; align-items: center; justify-content: center;
  min-height: 100px; transition: var(--transition);
  border: 1px solid rgba(255, 107, 53, 0.08);
}
.brand-wall-item:hover { border-color: var(--secondary); transform: translateY(-2px); }

/* === How-To Guide === */
.howto-steps {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 24px; counter-reset: step;
}
.howto-step {
  background: var(--bg-card); border-radius: var(--radius);
  padding: 28px; position: relative; counter-increment: step;
  border: 1px solid rgba(255, 107, 53, 0.08);
}
.howto-step::before {
  content: counter(step); position: absolute; top: -12px; left: 24px;
  width: 36px; height: 36px; background: var(--gradient-accent);
  border-radius: 50%; display: flex; align-items: center; justify-content: center;
  color: #fff; font-weight: 700; font-size: 1rem;
}
.howto-step h4 { margin-top: 8px; margin-bottom: 8px; font-size: 1.05rem; }
.howto-step p { color: var(--text-muted); font-size: 0.9rem; }

/* === Contact Section === */
.contact-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 28px;
}
.contact-card {
  background: var(--bg-card); border-radius: var(--radius);
  padding: 32px; text-align: center;
  border: 1px solid rgba(255, 107, 53, 0.08);
}
.contact-card h3 { margin-bottom: 16px; font-size: 1.15rem; }
.contact-item { margin-bottom: 12px; color: var(--text-muted); font-size: 0.92rem; }
.contact-item strong { color: var(--text-bright); }

/* === Share Buttons === */
.share-bar { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; padding: 20px 0; }
.share-btn {
  padding: 10px 20px; border-radius: 50px; font-size: 0.88rem;
  font-weight: 600; cursor: pointer; transition: var(--transition);
  border: none; color: #fff;
}
.share-wechat { background: #07C160; }
.share-weibo { background: #E6162D; }
.share-douyin { background: #161823; border: 1px solid #333; }
.share-bilibili { background: #00A1D6; }
.share-btn:hover { opacity: 0.85; transform: translateY(-2px); }

/* === Footer === */
.site-footer {
  background: var(--primary); padding: 60px 0 0;
  border-top: 1px solid rgba(255, 107, 53, 0.1);
}
.footer-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 40px; margin-bottom: 40px;
}
.footer-col h4 {
  font-size: 1.05rem; margin-bottom: 16px; color: var(--secondary);
  padding-bottom: 10px; border-bottom: 2px solid rgba(255, 107, 53, 0.2);
}
.footer-col p, .footer-col a { color: var(--text-muted); font-size: 0.9rem; display: block; margin-bottom: 8px; }
.footer-col a:hover { color: var(--secondary); }
.footer-qr { display: flex; gap: 20px; margin-top: 12px; }
.footer-qr img { width: 110px; height: 110px; border-radius: var(--radius-sm); }
.footer-qr-label { font-size: 0.8rem; color: var(--text-muted); text-align: center; margin-top: 6px; }
.footer-bottom {
  border-top: 1px solid rgba(255, 107, 53, 0.1);
  padding: 20px 0; text-align: center;
  color: var(--text-muted); font-size: 0.85rem;
}
.footer-logo { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.footer-logo img { height: 36px; }
.footer-logo span { font-size: 1.2rem; font-weight: 800; color: var(--secondary); }

/* === Breadcrumb === */
.breadcrumb {
  padding: 16px 0; font-size: 0.88rem;
  color: var(--text-muted);
}
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--secondary); }
.breadcrumb span { margin: 0 8px; }

/* === Inner Page Hero === */
.inner-hero {
  padding: 120px 0 60px; text-align: center;
  background: var(--gradient-main);
}
.inner-hero h1 { font-size: 2.4rem; margin-bottom: 12px; }
.inner-hero p { color: var(--text-muted); font-size: 1.05rem; }

/* === Content Blocks === */
.content-block { padding: 40px 0; }
.content-block h2 { font-size: 1.8rem; margin-bottom: 16px; }
.content-block p { color: var(--text-muted); font-size: 0.95rem; line-height: 1.9; margin-bottom: 16px; }
.content-img {
  border-radius: var(--radius); overflow: hidden; margin: 24px 0;
  box-shadow: var(--shadow-card);
}

/* === MCP Frontend Code Block === */
.mcp-widget {
  background: var(--bg-card); border-radius: var(--radius);
  padding: 24px; margin: 20px 0;
  border: 1px solid rgba(0, 212, 170, 0.15);
}
.mcp-widget h4 { color: var(--accent); margin-bottom: 12px; }
.mcp-widget pre {
  background: rgba(0, 0, 0, 0.3); padding: 16px;
  border-radius: var(--radius-sm); overflow-x: auto;
  font-size: 0.85rem; color: var(--accent);
}

/* === Lazy Load === */
/* 图片默认可见，通过animation实现淡入效果，避免JS时序问题导致图片不显示 */
.lazy { opacity: 1; animation: lazyFadeIn 0.5s ease; }
.lazy.loaded { opacity: 1; }
@keyframes lazyFadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* === Responsive === */
@media (max-width: 968px) {
  .main-nav { 
    display: none; position: fixed; top: 68px; left: 0; width: 100%;
    background: rgba(13, 13, 26, 0.98); flex-direction: column;
    padding: 20px; gap: 4px; border-bottom: 1px solid rgba(255, 107, 53, 0.15);
  }
  .main-nav.active { display: flex; }
  .main-nav a { padding: 12px 16px; width: 100%; }
  .nav-toggle { display: block; }
  .hero-content h1 { font-size: 2rem; }
  .hero-content p { font-size: 1rem; }
  .section-header h2 { font-size: 1.7rem; }
  .video-grid { grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }
  .footer-grid { grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); }
}
@media (max-width: 640px) {
  .hero-banner { min-height: 60vh; }
  .hero-content h1 { font-size: 1.6rem; }
  .hero-btns { flex-direction: column; align-items: center; }
  .btn-primary, .btn-outline { width: 100%; max-width: 280px; justify-content: center; }
  .video-grid { grid-template-columns: 1fr; }
  .feature-grid { grid-template-columns: 1fr; }
  .expert-grid { grid-template-columns: 1fr; }
  .review-grid { grid-template-columns: 1fr; }
  .section-wrap { padding: 50px 0; }
  .footer-qr { flex-direction: column; align-items: center; }
}

/* === Animations === */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}
.animate-in { animation: fadeInUp 0.5s ease forwards; opacity: 1 !important; transform: translateY(0) !important; }
.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }
.delay-4 { animation-delay: 0.4s; }

/* === Scrollbar === */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-dark); }
::-webkit-scrollbar-thumb { background: var(--bg-card); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--secondary); }

/* === Video Highlight Tags === */
.video-highlight {
  display: inline-block; padding: 2px 10px;
  background: rgba(255, 107, 53, 0.15); color: var(--secondary);
  border-radius: 4px; font-size: 0.82rem; font-weight: 600;
}

/* === Stats Bar === */
.stats-bar {
  display: flex; justify-content: center; gap: 48px;
  padding: 40px 0; flex-wrap: wrap;
}
.stat-item { text-align: center; }
.stat-num { font-size: 2.4rem; font-weight: 800; color: var(--secondary); }
.stat-label { font-size: 0.9rem; color: var(--text-muted); margin-top: 4px; }

/* === Image Gallery === */
.gallery-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 16px;
}
.gallery-item {
  border-radius: var(--radius); overflow: hidden;
  aspect-ratio: 16/9; position: relative;
}
.gallery-item img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
.gallery-item:hover img { transform: scale(1.08); }

/* === Video Modal === */
.video-modal-overlay {
  position: fixed; top: 0; left: 0; width: 100%; height: 100%;
  background: rgba(0, 0, 0, 0.85); z-index: 9999;
  display: flex; align-items: center; justify-content: center;
  opacity: 0; transition: opacity 0.3s ease;
}
.video-modal-overlay.active { opacity: 1; }
.video-modal {
  background: var(--bg-card); border-radius: var(--radius-lg);
  max-width: 720px; width: 90%; padding: 24px; position: relative;
  transform: scale(0.9); transition: transform 0.3s ease;
}
.video-modal-overlay.active .video-modal { transform: scale(1); }
.video-modal-close {
  position: absolute; top: 12px; right: 16px;
  font-size: 2rem; color: var(--text-muted); cursor: pointer;
  line-height: 1; z-index: 10;
  transition: var(--transition);
}
.video-modal-close:hover { color: var(--secondary); }
.video-modal-player { position: relative; border-radius: var(--radius); overflow: hidden; }
.video-modal-play-icon {
  position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);
  cursor: pointer; opacity: 0.9;
}
.video-modal-title {
  font-size: 1.1rem; font-weight: 600; color: var(--text-bright);
  margin-top: 16px; text-align: center;
}
.video-modal-tip {
  font-size: 0.88rem; color: var(--text-muted);
  text-align: center; margin-top: 8px;
}

/* === Back to Top === */
.back-to-top {
  position: fixed; bottom: 30px; right: 30px;
  width: 48px; height: 48px; border-radius: 50%;
  background: var(--gradient-accent); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.4rem; cursor: pointer; z-index: 999;
  opacity: 0; transform: translateY(20px);
  transition: var(--transition);
  box-shadow: 0 4px 16px rgba(255, 107, 53, 0.3);
}
.back-to-top.visible { opacity: 1; transform: translateY(0); }
.back-to-top:hover { transform: translateY(-3px); box-shadow: 0 6px 24px rgba(255, 107, 53, 0.4); }

/* === FAQ Open State (JS uses 'open' class) === */
.faq-item.open .faq-question .faq-icon { transform: rotate(45deg); }
.faq-item.open .faq-answer { max-height: 500px; }

/* === Mobile Nav Open State === */
.main-nav.open { display: flex; }
.nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* === Header Scrolled State === */
.site-header.scrolled {
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  border-bottom-color: rgba(255, 107, 53, 0.25);
}

/* === Video Play Button Visible State === */
.video-play-btn.visible { opacity: 1; }

/* === Print Styles === */
@media print {
  .site-header, .search-bar, .nav-toggle, .back-to-top, .share-bar { display: none; }
  body { background: #fff; color: #333; }
  .section-wrap { padding: 20px 0; }
}

/* === EEAT Author Info === */
.eeat-author {
  font-size: 0.85rem;
  color: var(--text-muted);
  padding: 10px 16px;
  background: rgba(255, 107, 53, 0.05);
  border-left: 3px solid var(--secondary);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin-bottom: 20px;
}

/* === Animate In === */
.animate-in {
  opacity: 1 !important;
  transform: translateY(0) !important;
}