/* ============================================
   探花 - 原创样式表
   品牌：探花 | 域名：lingxianwangluo.cn
   定位：国内影视传媒公司+视频社区
   ============================================ */

/* === CSS Variables === */
:root {
  --primary: #1A1F36;
  --secondary: #FF6B35;
  --accent: #00D4AA;
  --bg-dark: #0D1117;
  --bg-card: #161B22;
  --bg-card-hover: #1C2333;
  --text-main: #E6EDF3;
  --text-sub: #8B949E;
  --text-muted: #6E7681;
  --border-color: #30363D;
  --gradient-primary: linear-gradient(135deg, #FF6B35 0%, #FF8F65 100%);
  --gradient-accent: linear-gradient(135deg, #00D4AA 0%, #00F5C8 100%);
  --gradient-dark: linear-gradient(180deg, #0D1117 0%, #161B22 100%);
  --shadow-card: 0 4px 24px rgba(0,0,0,0.3);
  --shadow-hover: 0 8px 40px rgba(255,107,53,0.15);
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 20px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font-main: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
}

/* === Reset & Base === */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-main);
  background: 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 { font-weight: 700; line-height: 1.3; color: var(--text-main); }

/* === Container === */
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.section { padding: 80px 0; }
.section-title {
  font-size: 2rem;
  text-align: center;
  margin-bottom: 16px;
  position: relative;
}
.section-title span { color: var(--secondary); }
.section-subtitle {
  text-align: center;
  color: var(--text-sub);
  font-size: 1.05rem;
  margin-bottom: 50px;
  max-width: 680px;
  margin-left: auto;
  margin-right: auto;
}

/* === Header / Navigation === */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(13, 17, 23, 0.92);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}
.logo-wrap { display: flex; align-items: center; gap: 10px; }
.logo-wrap img { height: 40px; width: auto; }
.logo-text { font-size: 1.25rem; font-weight: 700; color: var(--text-main); }
.logo-text small { display: block; font-size: 0.7rem; color: var(--text-sub); font-weight: 400; }

.main-nav { display: flex; align-items: center; gap: 6px; }
.main-nav a {
  color: var(--text-sub);
  font-size: 0.92rem;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
  white-space: nowrap;
}
.main-nav a:hover, .main-nav a.active {
  color: var(--text-main);
  background: rgba(255,107,53,0.1);
}

/* Mobile menu toggle */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-main);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 8px;
}

/* === Search Bar === */
.search-bar-wrap {
  background: var(--bg-card);
  border-bottom: 1px solid var(--border-color);
  padding: 12px 0;
  margin-top: 68px;
}
.search-bar {
  display: flex;
  max-width: 600px;
  margin: 0 auto;
  position: relative;
}
.search-bar input {
  flex: 1;
  background: var(--bg-dark);
  border: 1px solid var(--border-color);
  border-radius: var(--radius) 0 0 var(--radius);
  padding: 10px 18px;
  color: var(--text-main);
  font-size: 0.95rem;
  outline: none;
  transition: var(--transition);
}
.search-bar input:focus { border-color: var(--secondary); }
.search-bar input::placeholder { color: var(--text-muted); }
.search-bar button {
  background: var(--gradient-primary);
  border: none;
  color: #fff;
  padding: 10px 24px;
  border-radius: 0 var(--radius) var(--radius) 0;
  cursor: pointer;
  font-size: 0.95rem;
  font-weight: 600;
  transition: var(--transition);
}
.search-bar button:hover { opacity: 0.9; }

/* === Hero Section === */
.hero {
  position: relative;
  min-height: 520px;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--bg-dark);
}
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.45;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(13,17,23,0.3) 0%, rgba(13,17,23,0.85) 100%);
  z-index: 1;
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 720px;
  padding: 60px 20px;
}
.hero-content h1 {
  font-size: 2.8rem;
  margin-bottom: 18px;
  line-height: 1.2;
}
.hero-content h1 span { color: var(--secondary); }
.hero-content p {
  font-size: 1.15rem;
  color: var(--text-sub);
  margin-bottom: 32px;
  line-height: 1.8;
}
.hero-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 30px; }
.hero-tags span {
  background: rgba(255,107,53,0.12);
  color: var(--secondary);
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 0.85rem;
  border: 1px solid rgba(255,107,53,0.25);
}
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--gradient-primary);
  color: #fff;
  padding: 14px 32px;
  border-radius: var(--radius);
  font-size: 1rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(255,107,53,0.3); color: #fff; }
.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: var(--accent);
  padding: 14px 32px;
  border-radius: var(--radius);
  font-size: 1rem;
  font-weight: 600;
  border: 2px solid var(--accent);
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
}
.btn-outline:hover { background: var(--accent); color: var(--bg-dark); }
.hero-btns { display: flex; gap: 16px; flex-wrap: wrap; }

/* === Video Card Grid === */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
}
.video-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border-color);
  transition: var(--transition);
  cursor: pointer;
}
.video-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(255,107,53,0.3);
}
.video-thumb {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
}
.video-thumb img {
  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%) scale(0.8);
  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);
}
.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-card:hover .video-play-btn { opacity: 1; transform: translate(-50%, -50%) scale(1); }
.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;
  align-items: center;
  gap: 16px;
  color: var(--text-muted);
  font-size: 0.82rem;
}
.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 {
  background: rgba(0,212,170,0.1);
  color: var(--accent);
  padding: 2px 10px;
  border-radius: 12px;
  font-size: 0.75rem;
}

/* === Feature Cards === */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px;
}
.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 32px 24px;
  text-align: center;
  transition: var(--transition);
}
.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(255,107,53,0.3);
}
.feature-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;
}
.feature-icon.accent { background: var(--gradient-accent); }
.feature-card h3 { font-size: 1.1rem; margin-bottom: 10px; }
.feature-card p { color: var(--text-sub); font-size: 0.92rem; }

/* === Expert Section === */
.expert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}
.expert-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 28px;
  display: flex;
  gap: 20px;
  align-items: flex-start;
  transition: var(--transition);
}
.expert-card:hover { border-color: rgba(255,107,53,0.3); box-shadow: var(--shadow-hover); }
.expert-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
  border: 3px solid var(--secondary);
}
.expert-info h3 { font-size: 1.05rem; margin-bottom: 4px; }
.expert-info .role { color: var(--secondary); font-size: 0.85rem; margin-bottom: 8px; }
.expert-info p { color: var(--text-sub); font-size: 0.88rem; margin-bottom: 12px; }
.expert-links { display: flex; gap: 8px; }
.expert-links a {
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 600;
}
.expert-links .btn-sm-primary { background: var(--gradient-primary); color: #fff; }
.expert-links .btn-sm-outline { border: 1px solid var(--accent); color: var(--accent); }
.expert-links .btn-sm-outline:hover { background: var(--accent); color: var(--bg-dark); }

/* === Partner Logos === */
.partner-wall {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 32px;
  align-items: center;
}
.partner-logo {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 20px 32px;
  color: var(--text-sub);
  font-size: 1.1rem;
  font-weight: 600;
  transition: var(--transition);
  min-width: 160px;
  text-align: center;
}
.partner-logo:hover { border-color: var(--secondary); color: var(--text-main); }

/* === Reviews === */
.review-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}
.review-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 28px;
  transition: var(--transition);
}
.review-card:hover { border-color: rgba(0,212,170,0.3); }
.review-stars { color: #FFB800; margin-bottom: 12px; font-size: 1rem; letter-spacing: 2px; }
.review-text { color: var(--text-sub); font-size: 0.92rem; margin-bottom: 16px; line-height: 1.7; font-style: italic; }
.review-author { display: flex; align-items: center; gap: 10px; }
.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-size: 0.9rem; font-weight: 600; }
.review-author-info .date { font-size: 0.78rem; color: var(--text-muted); }

/* === FAQ === */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  margin-bottom: 12px;
  overflow: hidden;
  transition: var(--transition);
}
.faq-item:hover { border-color: rgba(255,107,53,0.3); }
.faq-question {
  padding: 20px 24px;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
  font-size: 0.98rem;
  transition: var(--transition);
}
.faq-question:hover { color: var(--secondary); }
.faq-question .arrow {
  transition: var(--transition);
  font-size: 1.2rem;
  color: var(--text-muted);
}
.faq-item.active .faq-question .arrow { transform: rotate(180deg); color: var(--secondary); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}
.faq-answer-inner {
  padding: 0 24px 20px;
  color: var(--text-sub);
  font-size: 0.92rem;
  line-height: 1.8;
}

/* === Contact Section === */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px;
}
.contact-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 28px;
  text-align: center;
  transition: var(--transition);
}
.contact-card:hover { border-color: rgba(255,107,53,0.3); }
.contact-card h4 { margin-bottom: 12px; font-size: 1rem; }
.contact-card p { color: var(--text-sub); font-size: 0.9rem; }
.contact-card img { max-width: 160px; margin: 12px auto 0; border-radius: var(--radius-sm); }

/* === How-To Guide === */
.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: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 28px;
  position: relative;
  counter-increment: step;
  transition: var(--transition);
}
.howto-step:hover { border-color: rgba(255,107,53,0.3); }
.howto-step::before {
  content: counter(step);
  position: absolute;
  top: -14px;
  left: 24px;
  width: 32px;
  height: 32px;
  background: var(--gradient-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 700;
  font-size: 0.9rem;
}
.howto-step h4 { margin-bottom: 8px; font-size: 1rem; margin-top: 8px; }
.howto-step p { color: var(--text-sub); font-size: 0.88rem; }

/* === Social Share === */
.share-bar {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  padding: 30px 0;
}
.share-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius);
  font-size: 0.88rem;
  font-weight: 600;
  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 #FE2C55; }
.share-btn.bilibili { background: #00A1D6; }

/* === Footer === */
.site-footer {
  background: var(--primary);
  border-top: 1px solid var(--border-color);
  padding: 50px 0 30px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-brand p { color: var(--text-sub); font-size: 0.88rem; margin-top: 12px; line-height: 1.7; }
.footer-col h4 {
  font-size: 0.95rem;
  margin-bottom: 16px;
  color: var(--text-main);
  position: relative;
  padding-bottom: 10px;
}
.footer-col h4::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 30px;
  height: 2px;
  background: var(--secondary);
}
.footer-col a {
  display: block;
  color: var(--text-sub);
  font-size: 0.88rem;
  padding: 4px 0;
  transition: var(--transition);
}
.footer-col a:hover { color: var(--secondary); padding-left: 6px; }
.footer-qr { display: flex; gap: 20px; margin-top: 16px; }
.footer-qr img { width: 100px; border-radius: var(--radius-sm); }
.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  color: var(--text-muted);
  font-size: 0.82rem;
}

/* === Breadcrumb === */
.breadcrumb {
  padding: 16px 0;
  font-size: 0.85rem;
  color: var(--text-muted);
}
.breadcrumb a { color: var(--text-sub); }
.breadcrumb a:hover { color: var(--secondary); }
.breadcrumb span { margin: 0 8px; }

/* === Inner Page Hero === */
.inner-hero {
  background: var(--bg-card);
  padding: 100px 0 50px;
  border-bottom: 1px solid var(--border-color);
}
.inner-hero h1 { font-size: 2.2rem; margin-bottom: 12px; }
.inner-hero p { color: var(--text-sub); font-size: 1.05rem; max-width: 680px; }

/* === Article Content === */
.article-content {
  max-width: 800px;
  margin: 0 auto;
  padding: 40px 20px;
}
.article-content h2 { font-size: 1.5rem; margin: 32px 0 16px; color: var(--secondary); }
.article-content h3 { font-size: 1.2rem; margin: 24px 0 12px; }
.article-content p { color: var(--text-sub); margin-bottom: 16px; line-height: 1.9; }
.article-content img { border-radius: var(--radius); margin: 20px 0; }

/* === Responsive === */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .menu-toggle { display: block; }
  .main-nav {
    display: none;
    position: absolute;
    top: 68px;
    left: 0;
    width: 100%;
    background: rgba(13,17,23,0.98);
    flex-direction: column;
    padding: 16px;
    border-bottom: 1px solid var(--border-color);
  }
  .main-nav.active { display: flex; }
  .main-nav a { padding: 12px 16px; width: 100%; }
  .hero-content h1 { font-size: 1.8rem; }
  .hero-content p { font-size: 1rem; }
  .section { padding: 50px 0; }
  .section-title { font-size: 1.5rem; }
  .video-grid { grid-template-columns: 1fr; }
  .feature-grid { grid-template-columns: 1fr 1fr; }
  .expert-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .hero-btns { flex-direction: column; }
  .btn-primary, .btn-outline { width: 100%; justify-content: center; }
}
@media (max-width: 480px) {
  .feature-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .review-grid { grid-template-columns: 1fr; }
}

/* === Lazy Load === */
img[loading="lazy"] { opacity: 0; transition: opacity 0.5s ease; }
img[loading="lazy"].loaded, img[loading="lazy"][src] { opacity: 1; }

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

/* === Animation === */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}
.animate-in { animation: fadeInUp 0.6s ease forwards; }

/* === Stats Bar === */
.stats-bar {
  display: flex;
  justify-content: center;
  gap: 48px;
  flex-wrap: wrap;
  padding: 40px 0;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border-color);
}
.stat-item { text-align: center; }
.stat-number { font-size: 2rem; font-weight: 700; color: var(--secondary); }
.stat-label { font-size: 0.85rem; color: var(--text-sub); margin-top: 4px; }

/* === Tag Cloud === */
.tag-cloud { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; padding: 20px 0; }
.tag-cloud a {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-sub);
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 0.82rem;
  transition: var(--transition);
}
.tag-cloud a:hover { border-color: var(--secondary); color: var(--secondary); background: rgba(255,107,53,0.08); }