/*
* 91视频在线 - 91影院 - 91视频在线观看 - 91视频在线，精彩即刻
* 设计风格：霓虹渐变流体 + 柔和玻璃态 + 杂志风排版
* 配色：薰衣草紫渐变 → 珊瑚粉 → 天空蓝（浅色背景）
* 强调色：亮紫 #7C3AED, 珊瑚粉 #FF6B9D, 天空蓝 #38BDF8
* 背景：米白 #FAFAF9 为主，局部渐变
*/

/* 基础重置 */
*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }
body { 
  font-family: system-ui, 'PingFang SC', 'Microsoft YaHei', sans-serif; 
  overflow-x:hidden; 
  background: linear-gradient(135deg, #FAFAF9 0%, #F0F4FF 50%, #FFF5F5 100%);
  background-attachment: fixed;
  color: #1A1A2E;
}

/* 核心布局 — 必须居中 */
.container { max-width:1200px; margin:0 auto; padding:0 24px; }
.section { padding:80px 0; position: relative; }
.section:nth-child(even) { 
  background: rgba(255,255,255,0.7);
  backdrop-filter: blur(20px);
  border-top: 1px solid rgba(124,58,237,0.08);
  border-bottom: 1px solid rgba(124,58,237,0.08);
}

/* 导航 — 固定顶部 */
.site-header { 
  position:fixed; 
  top:0; 
  left:0; 
  width:100%; 
  z-index:1000; 
  background: rgba(250,250,249,0.85);
  backdrop-filter: blur(20px) saturate(1.4);
  border-bottom: 1px solid rgba(124,58,237,0.12);
  box-shadow: 0 4px 30px rgba(124,58,237,0.06);
}
.header-inner { 
  display:flex; 
  align-items:center; 
  justify-content:space-between; 
  height:68px; 
  max-width:1200px; 
  margin:0 auto; 
  padding:0 24px; 
}
.logo { 
  display:flex; 
  align-items:center; 
  gap:10px; 
  font-weight:800; 
  font-size:1.3rem; 
  text-decoration:none; 
  color: #1A1A2E;
  letter-spacing: -0.5px;
  background: linear-gradient(135deg, #7C3AED, #FF6B9D);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.logo-icon { 
  width:38px; 
  height:38px; 
  border-radius:12px; 
  display:flex; 
  align-items:center; 
  justify-content:center; 
  font-size:1.2rem;
  background: linear-gradient(135deg, #7C3AED, #38BDF8);
  color: #fff;
  -webkit-text-fill-color: #fff;
  box-shadow: 0 4px 12px rgba(124,58,237,0.3);
}
.main-nav { display:flex; align-items:center; gap:28px; list-style:none; }
.main-nav a { 
  text-decoration:none; 
  font-size:0.9rem; 
  font-weight:500; 
  transition:0.3s; 
  color: #1A1A2E;
  opacity: 0.7;
  position: relative;
  padding: 4px 0;
}
.main-nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, #7C3AED, #FF6B9D);
  transition: width 0.3s;
  border-radius: 2px;
}
.main-nav a:hover { opacity: 1; }
.main-nav a:hover::after { width: 100%; }
.nav-cta { 
  padding:10px 24px; 
  border-radius:50px; 
  color:#fff!important; 
  font-weight:600; 
  background: linear-gradient(135deg, #7C3AED, #FF6B9D);
  box-shadow: 0 4px 16px rgba(124,58,237,0.3);
  opacity: 1 !important;
  border: none;
}
.nav-cta::after { display: none !important; }
.nav-cta:hover { 
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(124,58,237,0.4);
}
.menu-toggle { display:none; }

/* 首页Hero */
.hero { 
  min-height:80vh; 
  display:flex; 
  align-items:center; 
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -30%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(124,58,237,0.12) 0%, rgba(56,189,248,0.08) 50%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}
.hero::after {
  content: '';
  position: absolute;
  bottom: -20%;
  left: -10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(255,107,157,0.1) 0%, rgba(124,58,237,0.06) 50%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}
.hero-content { max-width:720px; position: relative; z-index: 1; }
.hero-eyebrow { 
  display:inline-block; 
  font-size:0.8rem; 
  font-weight:700; 
  padding:6px 18px; 
  border-radius:50px; 
  margin-bottom:20px; 
  background: linear-gradient(135deg, rgba(124,58,237,0.1), rgba(255,107,157,0.1));
  color: #7C3AED;
  letter-spacing: 1px;
  text-transform: uppercase;
  border: 1px solid rgba(124,58,237,0.15);
}
.hero h1 { 
  font-size:3.2rem; 
  line-height:1.15; 
  margin-bottom:20px; 
  font-weight: 800;
  letter-spacing: -1px;
  background: linear-gradient(135deg, #1A1A2E 0%, #7C3AED 50%, #FF6B9D 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero p { 
  font-size:1.15rem; 
  opacity:0.6; 
  max-width:560px; 
  margin-bottom:36px; 
  line-height: 1.7;
  color: #4A4A6A;
}
.hero-buttons { display:flex; gap:16px; }
.hero-image { 
  border-radius:20px; 
  overflow:hidden; 
  box-shadow: 0 20px 60px rgba(124,58,237,0.15);
  position: relative;
}
.hero-image img { width:100%; height:auto; display: block; }

/* 按钮 */
.btn { 
  display:inline-flex; 
  align-items:center; 
  gap:10px; 
  padding:14px 32px; 
  border-radius:50px; 
  font-weight:600; 
  cursor:pointer; 
  border:none; 
  text-decoration:none; 
  transition:0.3s; 
  font-size: 0.95rem;
}
.btn-primary { 
  color:#fff; 
  background: linear-gradient(135deg, #7C3AED, #FF6B9D);
  box-shadow: 0 4px 20px rgba(124,58,237,0.3);
}
.btn-primary:hover { 
  transform: translateY(-3px);
  box-shadow: 0 8px 32px rgba(124,58,237,0.4);
}
.btn-outline { 
  background:transparent; 
  border:2px solid #7C3AED; 
  color: #7C3AED;
}
.btn-outline:hover { 
  background: rgba(124,58,237,0.06);
  transform: translateY(-2px);
}

/* 标签/标题 */
.section-label { 
  display:inline-block; 
  font-size:0.75rem; 
  font-weight:700; 
  letter-spacing:3px; 
  margin-bottom:14px; 
  color: #7C3AED;
  text-transform: uppercase;
  background: linear-gradient(135deg, rgba(124,58,237,0.1), rgba(56,189,248,0.1));
  padding: 4px 16px;
  border-radius: 50px;
}
.section-title { 
  font-size:2.2rem; 
  margin-bottom:16px; 
  font-weight: 700;
  letter-spacing: -0.5px;
  line-height: 1.3;
}
.section-desc { 
  max-width:600px; 
  opacity:0.6; 
  margin-bottom:48px; 
  font-size: 1.05rem;
  line-height: 1.7;
}

/* 卡片网格 */
.cards-grid { display:grid; grid-template-columns:repeat(auto-fill,minmax(280px,1fr)); gap:28px; }
.category-card { 
  border-radius:20px; 
  padding:32px; 
  border:1px solid rgba(124,58,237,0.1); 
  transition:0.4s; 
  background: rgba(255,255,255,0.8);
  backdrop-filter: blur(10px);
  box-shadow: 0 4px 20px rgba(124,58,237,0.04);
}
.category-card:hover { 
  transform:translateY(-6px); 
  box-shadow:0 12px 40px rgba(124,58,237,0.12);
  border-color: rgba(124,58,237,0.2);
}
.card-icon { 
  width:52px; 
  height:52px; 
  border-radius:16px; 
  display:flex; 
  align-items:center; 
  justify-content:center; 
  margin-bottom:20px; 
  font-size:1.5rem;
  background: linear-gradient(135deg, rgba(124,58,237,0.1), rgba(56,189,248,0.1));
}
.card-link { 
  font-weight:600; 
  font-size:0.85rem; 
  text-decoration:none; 
  color: #7C3AED;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: 0.2s;
}
.card-link:hover { gap: 12px; }

/* 特性块 */
.feature-block { display:grid; grid-template-columns:1fr 1fr; gap:64px; align-items:center; }
.feature-image { 
  border-radius:20px; 
  overflow:hidden; 
  box-shadow: 0 12px 40px rgba(124,58,237,0.1);
  position: relative;
}
.feature-image::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 20px;
  border: 1px solid rgba(124,58,237,0.1);
  pointer-events: none;
}
.feature-image img { width:100%; height:auto; display: block; }
.feature-text { }
.feature-list { list-style:none; }
.feature-list li { 
  padding:10px 0; 
  display:flex; 
  align-items:center; 
  gap:12px; 
  font-size: 1.05rem;
}
.feature-list li::before { 
  content:'✦'; 
  font-weight:700; 
  color: #7C3AED;
  font-size: 1.2rem;
}

/* 数据条 */
.stats-bar { 
  display:grid; 
  grid-template-columns:repeat(4,1fr); 
  gap:28px; 
  text-align:center; 
}
.stat-item { 
  padding:32px 24px; 
  border-radius:20px; 
  border:1px solid rgba(124,58,237,0.1); 
  background: rgba(255,255,255,0.7);
  backdrop-filter: blur(10px);
  transition: 0.3s;
}
.stat-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 32px rgba(124,58,237,0.08);
}
.stat-number { 
  font-size:2.6rem; 
  font-weight:800; 
  background: linear-gradient(135deg, #7C3AED, #FF6B9D);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
}
.stat-label { 
  font-size:0.9rem; 
  opacity:0.5; 
  margin-top:8px; 
  letter-spacing: 0.5px;
}

/* 内容墙 */
.content-wall { display:grid; grid-template-columns:repeat(auto-fill,minmax(300px,1fr)); gap:28px; }
.content-wall-item { 
  border-radius:20px; 
  overflow:hidden; 
  border:1px solid rgba(124,58,237,0.1); 
  transition:0.4s; 
  background: rgba(255,255,255,0.7);
  backdrop-filter: blur(10px);
}
.content-wall-item:hover { 
  transform:translateY(-6px); 
  box-shadow:0 12px 40px rgba(124,58,237,0.12);
}
.content-wall-item img { 
  width:100%; 
  height:220px; 
  object-fit:cover; 
  transition: 0.4s;
}
.content-wall-item:hover img { transform: scale(1.03); }
.content-wall-body { padding:24px; }

/* FAQ */
.faq-list { max-width:800px; margin:0 auto; }
.faq-item { 
  border:1px solid rgba(124,58,237,0.1); 
  border-radius:16px; 
  margin-bottom:10px; 
  overflow:hidden; 
  cursor:pointer; 
  transition: 0.3s;
  background: rgba(255,255,255,0.7);
  backdrop-filter: blur(10px);
}
.faq-item:hover { border-color: rgba(124,58,237,0.2); }
.faq-item .faq-question { 
  padding:20px 24px; 
  font-weight:600; 
  display:flex; 
  justify-content:space-between; 
  align-items: center;
  font-size: 1.05rem;
  color: #1A1A2E;
}
.faq-item .faq-question::after {
  content: '↓';
  font-size: 1.2rem;
  transition: 0.3s;
  color: #7C3AED;
}
.faq-item.open .faq-question::after { transform: rotate(180deg); }
.faq-item .faq-answer { 
  padding:0 24px 20px; 
  display:none; 
  opacity:0.7; 
  line-height: 1.7;
}
.faq-item.open .faq-answer { display:block; }

/* CTA横幅 */
.cta-banner { 
  padding:64px 32px; 
  text-align:center; 
  border-radius:24px; 
  background: linear-gradient(135deg, #7C3AED, #FF6B9D, #38BDF8);
  box-shadow: 0 16px 60px rgba(124,58,237,0.25);
  position: relative;
  overflow: hidden;
}
.cta-banner::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at 30% 50%, rgba(255,255,255,0.1) 0%, transparent 60%);
  pointer-events: none;
}
.cta-banner h2 { 
  color:#fff; 
  font-size: 2.4rem;
  font-weight: 700;
  letter-spacing: -0.5px;
  margin-bottom: 16px;
}
.cta-banner .btn-primary { 
  background:#fff; 
  color: #7C3AED;
  box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}
.cta-banner .btn-primary:hover { 
  transform: translateY(-3px);
  box-shadow: 0 8px 32px rgba(0,0,0,0.15);
}

/* 页脚 */
.site-footer { 
  padding:64px 0 32px; 
  background: linear-gradient(135deg, #1A1A2E, #2D1B69, #1A1A2E);
  color: rgba(255,255,255,0.8);
  position: relative;
}
.site-footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(124,58,237,0.4), transparent);
}
.footer-grid { display:grid; grid-template-columns:2fr 1fr 1fr 1fr; gap:48px; }
.footer-brand { }
.footer-col { }
.footer-col h4 { 
  color: #fff; 
  margin-bottom: 20px; 
  font-size: 1rem;
  letter-spacing: 0.5px;
}
.footer-col a { 
  color: rgba(255,255,255,0.6); 
  text-decoration: none; 
  display: block; 
  padding: 6px 0;
  transition: 0.2s;
  font-size: 0.9rem;
}
.footer-col a:hover { color: #fff; }
.footer-bottom { 
  border-top:1px solid rgba(255,255,255,0.08); 
  margin-top:48px; 
  padding-top:24px; 
  text-align:center; 
  font-size:0.85rem; 
  opacity: 0.5;
}

/* 工具类 */
.text-accent { color: #7C3AED; }
.text-center { text-align:center; }
.seo-description { max-width:600px; margin:0 auto 48px; opacity:0.6; line-height: 1.7; }
.mt-0 { margin-top:0; }
.mb-0 { margin-bottom:0; }

/* 响应式 */
@media (max-width: 768px) {
  .feature-block { grid-template-columns:1fr; gap: 40px; }
  .stats-bar { grid-template-columns:repeat(2,1fr); }
  .footer-grid { grid-template-columns:1fr 1fr; }
  .main-nav { display:none; }
  .menu-toggle { display:flex; }
  .main-nav.open { display:flex; flex-direction:column; position:absolute; top:68px; left:0; width:100%; background: rgba(250,250,249,0.98); padding:24px; border-bottom: 1px solid rgba(124,58,237,0.1); }
  .hero h1 { font-size: 2.2rem; }
  .hero { min-height: 60vh; }
  .section-title { font-size: 1.7rem; }
}
@media (max-width: 480px) {
  .cards-grid,.content-wall,.stats-bar { grid-template-columns:1fr; }
  .footer-grid { grid-template-columns:1fr; }
  .hero-buttons { flex-direction:column; }
  .hero h1 { font-size: 1.8rem; }
  .stat-number { font-size: 2rem; }
}