/* ============================================
   茄子视频 - 原创样式表
   品牌：茄子视频 | Lnvexo.cn
   配色：糖心粉 + 深玫红 + 暖金 + 深夜蓝黑
   ============================================ */

/* CSS Variables */
:root {
  --primary: #FF6B9D;
  --primary-dark: #C44569;
  --accent: #F8B500;
  --bg-dark: #0D0D1A;
  --bg-section: #1A1A2E;
  --bg-card: #16213E;
  --text-white: #FFFFFF;
  --text-light: #E0E0E0;
  --text-muted: #B0B0B0;
  --gradient-primary: linear-gradient(135deg, #FF6B9D, #C44569);
  --gradient-accent: linear-gradient(135deg, #F8B500, #FF6B9D);
  --gradient-dark: linear-gradient(180deg, #0D0D1A, #1A1A2E);
  --shadow-card: 0 8px 32px rgba(0,0,0,0.3);
  --shadow-hover: 0 12px 40px rgba(255,107,157,0.2);
  --radius: 12px;
  --radius-lg: 20px;
  --transition: all 0.3s ease;
}

/* Reset & Base */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
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; }
h1, h2, h3, h4, h5, h6 { color: var(--text-white); font-weight: 700; line-height: 1.3; }

/* Container */
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.section { padding: 80px 0; }
.section-alt { background: var(--bg-section); }

/* Section Title */
.section-title {
  text-align: center;
  margin-bottom: 50px;
}
.section-title h2 {
  font-size: 2.2rem;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: inline-block;
  margin-bottom: 12px;
}
.section-title p {
  color: var(--text-muted);
  font-size: 1.05rem;
  max-width: 600px;
  margin: 0 auto;
}

/* ========== HEADER ========== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(13,13,26,0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255,107,157,0.15);
  transition: var(--transition);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}
.logo { display: flex; align-items: center; gap: 10px; }
.logo img { height: 42px; width: auto; }
.logo span {
  font-size: 1.4rem;
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Navigation */
.main-nav { display: flex; align-items: center; gap: 6px; }
.main-nav a {
  color: var(--text-light);
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 500;
  transition: var(--transition);
  white-space: nowrap;
}
.main-nav a:hover, .main-nav a.active {
  background: rgba(255,107,157,0.15);
  color: var(--primary);
}

/* Mobile Menu */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 5px;
}
.menu-toggle span {
  width: 26px;
  height: 2px;
  background: var(--text-white);
  border-radius: 2px;
  transition: var(--transition);
}

/* Search Bar */
.search-bar {
  background: var(--bg-section);
  border-bottom: 1px solid rgba(255,107,157,0.1);
  padding: 12px 0;
  margin-top: 70px;
}
.search-bar .container { display: flex; justify-content: center; }
.search-box {
  display: flex;
  max-width: 580px;
  width: 100%;
  background: var(--bg-card);
  border-radius: 50px;
  overflow: hidden;
  border: 1px solid rgba(255,107,157,0.2);
}
.search-box input {
  flex: 1;
  background: transparent;
  border: none;
  padding: 12px 24px;
  color: var(--text-white);
  font-size: 0.95rem;
  outline: none;
}
.search-box input::placeholder { color: var(--text-muted); }
.search-box button {
  background: var(--gradient-primary);
  border: none;
  padding: 12px 28px;
  color: #fff;
  font-size: 0.95rem;
  cursor: pointer;
  transition: var(--transition);
  font-weight: 500;
}
.search-box button:hover { opacity: 0.85; }

/* ========== HERO ========== */
.hero {
  position: relative;
  min-height: 520px;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--bg-dark);
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0.35;
  filter: blur(2px);
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(13,13,26,0.5) 0%, rgba(13,13,26,0.95) 100%);
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 700px;
  padding: 40px 0;
}
.hero-content h1 {
  font-size: 2.8rem;
  margin-bottom: 16px;
  line-height: 1.25;
}
.hero-content h1 .brand-highlight {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-content p {
  font-size: 1.15rem;
  color: var(--text-muted);
  margin-bottom: 30px;
  line-height: 1.8;
}
.hero-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 30px; }
.hero-tags span {
  background: rgba(255,107,157,0.12);
  color: var(--primary);
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 0.85rem;
  border: 1px solid rgba(255,107,157,0.2);
}
.btn-primary {
  display: inline-block;
  background: var(--gradient-primary);
  color: #fff;
  padding: 14px 36px;
  border-radius: 50px;
  font-size: 1rem;
  font-weight: 600;
  transition: var(--transition);
  border: none;
  cursor: pointer;
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(255,107,157,0.35);
  color: #fff;
}
.btn-outline {
  display: inline-block;
  border: 2px solid var(--primary);
  color: var(--primary);
  padding: 12px 32px;
  border-radius: 50px;
  font-size: 1rem;
  font-weight: 600;
  transition: var(--transition);
  background: transparent;
  cursor: pointer;
}
.btn-outline:hover {
  background: var(--primary);
  color: #fff;
}
.hero-btns { display: flex; gap: 16px; flex-wrap: wrap; }

/* ========== VIDEO CARDS ========== */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}
.video-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
  border: 1px solid rgba(255,255,255,0.05);
}
.video-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(255,107,157,0.2);
}
.video-thumb {
  position: relative;
  padding-top: 56.25%;
  overflow: hidden;
  cursor: pointer;
}
.video-thumb img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.video-card:hover .video-thumb img { transform: scale(1.05); }
.play-btn {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0);
  width: 60px;
  height: 60px;
  background: rgba(255,107,157,0.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  z-index: 3;
}
.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-card:hover .play-btn { 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;
  gap: 16px;
  color: var(--text-muted);
  font-size: 0.82rem;
}
.video-meta span { display: flex; align-items: center; gap: 4px; }
.video-tag {
  display: inline-block;
  background: rgba(255,107,157,0.1);
  color: var(--primary);
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 0.75rem;
  margin-top: 8px;
}

/* ========== FEATURE GRID ========== */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px;
}
.feature-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 32px 24px;
  text-align: center;
  transition: var(--transition);
  border: 1px solid rgba(255,255,255,0.05);
}
.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(255,107,157,0.2);
}
.feature-icon {
  width: 64px;
  height: 64px;
  background: var(--gradient-primary);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  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(260px, 1fr));
  gap: 24px;
}
.expert-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 30px 20px;
  text-align: center;
  transition: var(--transition);
  border: 1px solid rgba(255,255,255,0.05);
}
.expert-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.expert-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; margin-bottom: 4px; }
.expert-card .role { color: var(--primary); font-size: 0.88rem; margin-bottom: 10px; }
.expert-card p { color: var(--text-muted); font-size: 0.88rem; margin-bottom: 16px; }
.expert-btns { display: flex; gap: 10px; justify-content: center; }
.expert-btns a {
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 0.82rem;
  border: 1px solid var(--primary);
  color: var(--primary);
  transition: var(--transition);
}
.expert-btns a:hover { background: var(--primary); color: #fff; }

/* ========== PARTNER LOGOS ========== */
.partner-wall {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  justify-content: center;
  align-items: center;
}
.partner-logo {
  background: var(--bg-card);
  padding: 20px 30px;
  border-radius: var(--radius);
  border: 1px solid rgba(255,255,255,0.05);
  color: var(--text-muted);
  font-size: 1rem;
  font-weight: 600;
  transition: var(--transition);
}
.partner-logo: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);
  margin-bottom: 12px;
  border: 1px solid rgba(255,255,255,0.05);
  overflow: hidden;
}
.faq-question {
  padding: 20px 24px;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
  color: var(--text-white);
  transition: var(--transition);
}
.faq-question:hover { color: var(--primary); }
.faq-question .arrow {
  transition: transform 0.3s ease;
  font-size: 1.2rem;
  color: var(--primary);
}
.faq-item.active .faq-question .arrow { transform: rotate(180deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}
.faq-answer-inner {
  padding: 0 24px 20px;
  color: var(--text-muted);
  line-height: 1.8;
}

/* ========== REVIEWS ========== */
.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 rgba(255,255,255,0.05);
  transition: var(--transition);
}
.review-card:hover { border-color: rgba(255,107,157,0.2); }
.review-stars { color: var(--accent); margin-bottom: 12px; font-size: 1rem; letter-spacing: 2px; }
.review-text { color: var(--text-light); font-size: 0.95rem; margin-bottom: 16px; line-height: 1.7; }
.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-weight: 600; font-size: 0.9rem; color: var(--text-white); }
.review-author-info .date { font-size: 0.8rem; color: var(--text-muted); }

/* ========== CONTACT ========== */
.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 rgba(255,255,255,0.05);
}
.contact-card h4 { color: var(--primary); margin-bottom: 12px; font-size: 1.05rem; }
.contact-card p { color: var(--text-muted); font-size: 0.92rem; }
.contact-card img { max-width: 160px; margin: 12px auto 0; border-radius: 8px; }

/* ========== HOW TO JOIN ========== */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 24px;
}
.step-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 30px 20px;
  text-align: center;
  border: 1px solid rgba(255,255,255,0.05);
  position: relative;
}
.step-num {
  width: 48px;
  height: 48px;
  background: var(--gradient-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  font-size: 1.3rem;
  font-weight: 800;
  color: #fff;
}
.step-card h4 { margin-bottom: 8px; font-size: 1.05rem; }
.step-card p { color: var(--text-muted); font-size: 0.88rem; }

/* ========== SOCIAL SHARE ========== */
.share-bar {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  padding: 20px 0;
}
.share-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 20px;
  border-radius: 50px;
  font-size: 0.88rem;
  font-weight: 500;
  color: #fff;
  transition: var(--transition);
  cursor: pointer;
  border: none;
}
.share-btn:hover { transform: translateY(-2px); opacity: 0.9; color: #fff; }
.share-wechat { background: #07C160; }
.share-weibo { background: #E6162D; }
.share-douyin { background: #161823; border: 1px solid #333; }
.share-bilibili { background: #00A1D6; }

/* ========== FOOTER ========== */
.site-footer {
  background: #0A0A15;
  border-top: 1px solid rgba(255,107,157,0.1);
  padding: 50px 0 30px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-brand .logo { margin-bottom: 16px; }
.footer-brand p { color: var(--text-muted); font-size: 0.9rem; line-height: 1.7; }
.footer-col h4 {
  color: var(--text-white);
  font-size: 1rem;
  margin-bottom: 16px;
  position: relative;
  padding-bottom: 10px;
}
.footer-col h4::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 30px;
  height: 2px;
  background: var(--gradient-primary);
}
.footer-col a {
  display: block;
  color: var(--text-muted);
  padding: 4px 0;
  font-size: 0.9rem;
  transition: var(--transition);
}
.footer-col a:hover { color: var(--primary); padding-left: 6px; }
.footer-qr { display: flex; gap: 20px; margin-top: 20px; }
.footer-qr-item { text-align: center; }
.footer-qr-item img { width: 110px; height: 110px; border-radius: 8px; margin-bottom: 6px; }
.footer-qr-item span { font-size: 0.78rem; color: var(--text-muted); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.05);
  padding-top: 24px;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
}
.footer-bottom a { color: var(--primary); }

/* ========== BREADCRUMB ========== */
.breadcrumb {
  padding: 16px 0;
  margin-top: 70px;
  background: var(--bg-section);
  border-bottom: 1px solid rgba(255,107,157,0.1);
}
.breadcrumb-list {
  display: flex;
  gap: 8px;
  align-items: center;
  font-size: 0.88rem;
  color: var(--text-muted);
}
.breadcrumb-list a { color: var(--primary); }
.breadcrumb-list .sep { color: var(--text-muted); }

/* ========== INNER PAGE ========== */
.page-hero {
  padding: 60px 0 40px;
  text-align: center;
  background: var(--bg-section);
}
.page-hero h1 {
  font-size: 2.2rem;
  margin-bottom: 12px;
}
.page-hero p { color: var(--text-muted); max-width: 600px; margin: 0 auto; }

/* ========== LAZY LOAD ========== */
img[data-src] { opacity: 0; transition: opacity 0.4s ease; }
img[data-src].loaded { opacity: 1; }

/* ========== RESPONSIVE ========== */
@media (max-width: 992px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .hero-content h1 { font-size: 2.2rem; }
}
@media (max-width: 768px) {
  .main-nav {
    display: none;
    position: absolute;
    top: 70px;
    left: 0;
    right: 0;
    background: rgba(13,13,26,0.98);
    flex-direction: column;
    padding: 20px;
    gap: 4px;
    border-bottom: 1px solid rgba(255,107,157,0.15);
  }
  .main-nav.active { display: flex; }
  .menu-toggle { display: flex; }
  .hero-content h1 { font-size: 1.8rem; }
  .hero-content p { font-size: 1rem; }
  .section { padding: 50px 0; }
  .section-title h2 { font-size: 1.7rem; }
  .footer-grid { grid-template-columns: 1fr; gap: 30px; }
  .video-grid { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }
  .hero-btns { flex-direction: column; }
  .btn-primary, .btn-outline { text-align: center; }
}
@media (max-width: 480px) {
  .hero-content h1 { font-size: 1.5rem; }
  .video-grid { grid-template-columns: 1fr; }
  .feature-grid { grid-template-columns: 1fr; }
  .expert-grid { grid-template-columns: 1fr; }
  .review-grid { grid-template-columns: 1fr; }
}