/* ============================================
   星空体育备用网址 - 星际流体设计系统
   风格：暖光星云·玻璃态·流体渐变
   ============================================ */

/* 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: #faf8f5;
  color: #2d3436;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* 星空粒子背景装饰 */
body::before {
  content: '';
  position: fixed;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: 
    radial-gradient(2px 2px at 15% 25%, rgba(108,92,231,0.3), transparent),
    radial-gradient(2px 2px at 75% 35%, rgba(247,127,0,0.25), transparent),
    radial-gradient(2px 2px at 40% 60%, rgba(108,92,231,0.2), transparent),
    radial-gradient(1px 1px at 85% 70%, rgba(247,127,0,0.3), transparent),
    radial-gradient(1px 1px at 20% 80%, rgba(108,92,231,0.25), transparent),
    radial-gradient(2px 2px at 55% 15%, rgba(247,127,0,0.2), transparent),
    radial-gradient(1px 1px at 65% 55%, rgba(108,92,231,0.35), transparent),
    radial-gradient(2px 2px at 10% 45%, rgba(247,127,0,0.2), transparent);
  z-index: -1;
  pointer-events: none;
}

/* 核心布局 */
.container { 
  max-width:1200px; 
  margin:0 auto; 
  padding:0 24px; 
}

.section { 
  padding:80px 0;
  position: relative;
}

.section:nth-child(even) { 
  background: linear-gradient(180deg, #f5f3ff 0%, #faf8f5 40%, #faf8f5 60%, #fef9f3 100%);
}

/* 导航 */
.site-header { 
  position:fixed; 
  top:0; 
  left:0; 
  width:100%; 
  z-index:1000; 
  background: rgba(250,248,245,0.85);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid rgba(108,92,231,0.08);
  box-shadow: 0 1px 20px rgba(108,92,231,0.04);
}

.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:1.25rem; 
  text-decoration:none; 
  color:#2d3436;
  letter-spacing: -0.5px;
}

.logo-icon { 
  width:38px; 
  height:38px; 
  border-radius:10px; 
  display:flex; 
  align-items:center; 
  justify-content:center; 
  font-size:1.1rem;
  background: linear-gradient(135deg, #6c5ce7 0%, #a29bfe 40%, #f77f00 100%);
  color: #fff;
  box-shadow: 0 4px 15px rgba(108,92,231,0.3);
}

.main-nav { 
  display:flex; 
  align-items:center; 
  gap:28px; 
  list-style:none; 
}

.main-nav a { 
  text-decoration:none; 
  font-size:0.88rem; 
  font-weight:500;
  color: #5a5a6e;
  transition: all 0.25s cubic-bezier(0.4,0,0.2,1);
  position: relative;
  padding: 6px 0;
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, #6c5ce7, #f77f00);
  transition: width 0.3s cubic-bezier(0.4,0,0.2,1);
  border-radius: 1px;
}

.main-nav a:hover {
  color: #6c5ce7;
}

.main-nav a:hover::after {
  width: 100%;
}

.nav-cta { 
  padding:9px 22px; 
  border-radius:25px; 
  color:#fff!important; 
  font-weight:700;
  background: linear-gradient(135deg, #6c5ce7 0%, #f77f00 100%);
  box-shadow: 0 4px 20px rgba(108,92,231,0.35);
  transition: all 0.35s cubic-bezier(0.4,0,0.2,1)!important;
}

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(108,92,231,0.45);
}

.nav-cta::after {
  display: none!important;
}

.menu-toggle { 
  display:none; 
  background: none;
  border: none;
  cursor: pointer;
  width: 32px;
  height: 24px;
  flex-direction: column;
  justify-content: space-between;
  padding: 0;
}

.menu-toggle span {
  display: block;
  width: 100%;
  height: 2.5px;
  background: #2d3436;
  border-radius: 2px;
  transition: 0.3s;
}

/* 首页Hero */
.hero { 
  min-height:70vh; 
  display:flex; 
  align-items:center;
  padding-top: 68px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -30%;
  right: -15%;
  width: 60%;
  height: 150%;
  background: radial-gradient(ellipse, rgba(108,92,231,0.06) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -20%;
  left: -10%;
  width: 50%;
  height: 120%;
  background: radial-gradient(ellipse, rgba(247,127,0,0.05) 0%, 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:5px 16px; 
  border-radius:20px; 
  margin-bottom:16px;
  background: linear-gradient(135deg, rgba(108,92,231,0.1) 0%, rgba(247,127,0,0.08) 100%);
  color: #6c5ce7;
  letter-spacing: 1px;
  text-transform: uppercase;
  border: 1px solid rgba(108,92,231,0.15);
}

.hero h1 { 
  font-size:3.2rem; 
  line-height:1.15; 
  margin-bottom:20px;
  font-weight: 900;
  letter-spacing: -1.5px;
  background: linear-gradient(135deg, #2d3436 0%, #4a3f6b 50%, #6c5ce7 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p { 
  font-size:1.15rem; 
  opacity:0.75;
  max-width:560px; 
  margin-bottom:36px;
  line-height: 1.7;
  color: #5a5a6e;
}

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

.hero-image { 
  border-radius:16px; 
  overflow:hidden;
  box-shadow: 0 20px 60px rgba(108,92,231,0.12), 0 4px 16px rgba(0,0,0,0.04);
  border: 1px solid rgba(108,92,231,0.08);
}

.hero-image img { 
  width:100%; 
  height:auto; 
  display: block;
}

/* 按钮 */
.btn { 
  display:inline-flex; 
  align-items:center; 
  gap:8px; 
  padding:13px 30px; 
  border-radius:25px; 
  font-weight:700;
  font-size: 0.9rem;
  cursor:pointer; 
  border:none; 
  text-decoration:none; 
  transition: all 0.35s cubic-bezier(0.4,0,0.2,1);
  letter-spacing: 0.3px;
}

.btn-primary { 
  color:#fff;
  background: linear-gradient(135deg, #6c5ce7 0%, #8b7cf0 50%, #f77f00 100%);
  background-size: 200% 200%;
  box-shadow: 0 6px 24px rgba(108,92,231,0.35);
  animation: gradientShift 4s ease infinite;
}

@keyframes gradientShift {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 35px rgba(108,92,231,0.45);
}

.btn-outline { 
  background:transparent; 
  border: 2px solid rgba(108,92,231,0.25);
  color: #6c5ce7;
  font-weight: 600;
}

.btn-outline:hover {
  border-color: #6c5ce7;
  background: rgba(108,92,231,0.04);
  transform: translateY(-2px);
}

/* 标签/标题 */
.section-label { 
  display:inline-block; 
  font-size:0.78rem; 
  font-weight:700; 
  letter-spacing:3px; 
  margin-bottom:12px;
  color: #f77f00;
  text-transform: uppercase;
  position: relative;
  padding-left: 28px;
}

.section-label::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  width: 18px;
  height: 2px;
  background: linear-gradient(90deg, #f77f00, transparent);
  border-radius: 1px;
}

.section-title { 
  font-size:2.3rem; 
  margin-bottom:16px;
  font-weight: 800;
  letter-spacing: -1px;
  color: #2d3436;
  line-height: 1.2;
}

.section-desc { 
  max-width:600px; 
  opacity:0.7;
  margin-bottom:44px;
  font-size: 1.05rem;
  color: #5a5a6e;
  line-height: 1.7;
}

/* 卡片网格 */
.cards-grid { 
  display:grid; 
  grid-template-columns:repeat(auto-fill,minmax(270px,1fr)); 
  gap:28px; 
}

.category-card { 
  border-radius:16px; 
  padding:32px 28px; 
  border: 1px solid rgba(108,92,231,0.08);
  transition: all 0.35s cubic-bezier(0.4,0,0.2,1);
  background: rgba(255,255,255,0.7);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  position: relative;
  overflow: hidden;
}

.category-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, #6c5ce7, #f77f00);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s cubic-bezier(0.4,0,0.2,1);
}

.category-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 40px rgba(108,92,231,0.1), 0 4px 12px rgba(0,0,0,0.04);
  border-color: rgba(108,92,231,0.2);
}

.category-card:hover::before {
  transform: scaleX(1);
}

.card-icon { 
  width:52px; 
  height:52px; 
  border-radius:14px; 
  display:flex; 
  align-items:center; 
  justify-content:center; 
  margin-bottom:18px; 
  font-size:1.4rem;
  background: linear-gradient(135deg, rgba(108,92,231,0.1) 0%, rgba(247,127,0,0.06) 100%);
  color: #6c5ce7;
}

.category-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: #2d3436;
}

.category-card p {
  font-size: 0.9rem;
  color: #5a5a6e;
  line-height: 1.6;
  margin-bottom: 16px;
}

.card-link { 
  font-weight:700; 
  font-size:0.85rem; 
  text-decoration:none;
  color: #6c5ce7;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap 0.3s;
}

.card-link:hover {
  gap: 12px;
}

.card-link::after {
  content: '→';
  font-size: 1.1rem;
}

/* 特性块 */
.feature-block { 
  display:grid; 
  grid-template-columns:1fr 1fr; 
  gap:64px; 
  align-items:center; 
}

.feature-image { 
  border-radius:16px; 
  overflow:hidden;
  box-shadow: 0 16px 40px rgba(108,92,231,0.1);
  border: 1px solid rgba(108,92,231,0.06);
}

.feature-image img { 
  width:100%; 
  height:auto; 
  display: block;
}

.feature-text h3 {
  font-size: 1.8rem;
  font-weight: 800;
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}

.feature-text p {
  color: #5a5a6e;
  line-height: 1.7;
  margin-bottom: 20px;
}

.feature-list { 
  list-style:none; 
}

.feature-list li { 
  padding:8px 0; 
  display:flex; 
  align-items:center; 
  gap:10px;
  font-weight: 500;
  color: #2d3436;
}

.feature-list li::before { 
  content:'✓'; 
  font-weight:800;
  color: #6c5ce7;
  background: rgba(108,92,231,0.1);
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  flex-shrink: 0;
}

/* 数据条 */
.stats-bar { 
  display:grid; 
  grid-template-columns:repeat(4,1fr); 
  gap:24px; 
  text-align:center; 
}

.stat-item { 
  padding:32px 24px; 
  border-radius:16px; 
  border: 1px solid rgba(108,92,231,0.08);
  background: rgba(255,255,255,0.6);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  transition: all 0.35s;
}

.stat-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 30px rgba(108,92,231,0.1);
  border-color: rgba(108,92,231,0.2);
}

.stat-number { 
  font-size:2.5rem; 
  font-weight:900;
  background: linear-gradient(135deg, #6c5ce7, #f77f00);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -1px;
}

.stat-label { 
  font-size:0.9rem; 
  opacity:0.7;
  margin-top:8px;
  color: #5a5a6e;
  font-weight: 500;
}

/* 内容墙 */
.content-wall { 
  display:grid; 
  grid-template-columns:repeat(auto-fill,minmax(290px,1fr)); 
  gap:28px; 
}

.content-wall-item { 
  border-radius:16px; 
  overflow:hidden; 
  border: 1px solid rgba(108,92,231,0.08);
  transition: all 0.35s cubic-bezier(0.4,0,0.2,1);
  background: #fff;
}

.content-wall-item:hover { 
  transform: translateY(-6px);
  box-shadow: 0 20px 40px rgba(108,92,231,0.12), 0 4px 12px rgba(0,0,0,0.04);
}

.content-wall-item img { 
  width:100%; 
  height:210px; 
  object-fit:cover;
  display: block;
}

.content-wall-body { 
  padding:22px; 
}

.content-wall-body h4 {
  font-weight: 700;
  font-size: 1.05rem;
  margin-bottom: 6px;
  color: #2d3436;
}

.content-wall-body p {
  font-size: 0.88rem;
  color: #5a5a6e;
  line-height: 1.5;
}

/* FAQ */
.faq-list { 
  max-width:820px; 
  margin:0 auto; 
}

.faq-item { 
  border: 1px solid rgba(108,92,231,0.1);
  border-radius:14px; 
  margin-bottom:10px; 
  overflow:hidden; 
  cursor:pointer;
  background: rgba(255,255,255,0.5);
  transition: all 0.3s;
}

.faq-item:hover {
  border-color: rgba(108,92,231,0.25);
}

.faq-item .faq-question { 
  padding:18px 22px; 
  font-weight:700;
  display:flex; 
  justify-content:space-between;
  align-items: center;
  color: #2d3436;
  font-size: 0.95rem;
}

.faq-item .faq-question::after {
  content: '+';
  font-size: 1.3rem;
  color: #6c5ce7;
  font-weight: 600;
  transition: transform 0.3s;
}

.faq-item.open .faq-question::after {
  content: '−';
  transform: rotate(180deg);
}

.faq-item .faq-answer { 
  padding:0 22px 18px; 
  display:none; 
  opacity:0.75;
  font-size: 0.9rem;
  color: #5a5a6e;
  line-height: 1.7;
}

.faq-item.open .faq-answer { 
  display:block;
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 0.75; transform: translateY(0); }
}

/* CTA横幅 */
.cta-banner { 
  padding:64px 32px; 
  text-align:center; 
  border-radius:20px; 
  color:#fff;
  background: linear-gradient(135deg, #6c5ce7 0%, #8b7cf0 30%, #f77f00 100%);
  background-size: 200% 200%;
  animation: gradientShift 6s ease infinite;
  position: relative;
  overflow: hidden;
}

.cta-banner::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 60%;
  height: 200%;
  background: rgba(255,255,255,0.04);
  border-radius: 50%;
  pointer-events: none;
}

.cta-banner h2 { 
  color:#fff;
  font-size: 2.2rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  position: relative;
}

.cta-banner p {
  color: rgba(255,255,255,0.85);
  margin: 12px 0 24px;
  position: relative;
}

.cta-banner .btn-primary { 
  background:#fff;
  color: #6c5ce7;
  box-shadow: 0 8px 30px rgba(0,0,0,0.15);
  position: relative;
}

.cta-banner .btn-primary:hover {
  background: #faf8f5;
  box-shadow: 0 12px 35px rgba(0,0,0,0.2);
}

/* 页脚 */
.site-footer { 
  padding:60px 0 28px;
  background: #f5f3ff;
  border-top: 1px solid rgba(108,92,231,0.08);
}

.site-footer .container { }

.footer-grid { 
  display:grid; 
  grid-template-columns:2fr 1fr 1fr 1fr; 
  gap:44px; 
}

.footer-brand h4 {
  font-weight: 800;
  font-size: 1.2rem;
  margin-bottom: 10px;
  color: #2d3436;
}

.footer-brand p {
  font-size: 0.9rem;
  color: #5a5a6e;
  line-height: 1.6;
}

.footer-col h5 {
  font-weight: 700;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: #6c5ce7;
  margin-bottom: 16px;
}

.footer-col a {
  display: block;
  text-decoration: none;
  color: #5a5a6e;
  font-size: 0.9rem;
  margin-bottom: 8px;
  transition: color 0.2s;
}

.footer-col a:hover {
  color: #6c5ce7;
}

.footer-bottom { 
  border-top:1px solid rgba(108,92,231,0.1);
  margin-top:44px; 
  padding-top:22px; 
  text-align:center; 
  font-size:0.85rem;
  color: #5a5a6e;
}

/* 工具类 */
.text-accent { 
  color: #6c5ce7;
  font-weight: 700;
}

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

.seo-description { 
  max-width:640px; 
  margin:0 auto 52px; 
  opacity:0.7;
  text-align: center;
  color: #5a5a6e;
  line-height: 1.7;
}

.mt-0 { margin-top:0; }
.mb-0 { margin-bottom:0; }

/* ============================================
   响应式设计
   ============================================ */
@media (max-width: 1024px) {
  .hero h1 { font-size: 2.5rem; }
  .section-title { font-size: 1.9rem; }
  .stats-bar { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr 1fr; gap: 32px; }
}

@media (max-width: 768px) {
  .feature-block { 
    grid-template-columns:1fr;
    gap: 36px;
  }
  
  .stats-bar { 
    grid-template-columns:repeat(2,1fr);
    gap: 16px;
  }
  
  .footer-grid { 
    grid-template-columns:1fr 1fr;
    gap: 28px;
  }
  
  .hero h1 { font-size: 2.1rem; }
  .hero p { font-size: 1rem; }
  .section-title { font-size: 1.6rem; }
  
  .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(250,248,245,0.98);
    backdrop-filter: blur(20px);
    padding:24px;
    gap: 16px;
    border-bottom: 1px solid rgba(108,92,231,0.1);
    box-shadow: 0 12px 30px rgba(0,0,0,0.06);
  }
  
  .main-nav.open a {
    font-size: 1rem;
    padding: 10px 0;
  }
  
  .section { padding: 56px 0; }
  .hero { min-height: 55vh; }
}

@media (max-width: 480px) {
  .cards-grid,
  .content-wall,
  .stats-bar { 
    grid-template-columns:1fr; 
  }
  
  .footer-grid { 
    grid-template-columns:1fr;
    gap: 24px;
  }
  
  .hero-buttons { 
    flex-direction:column;
    width: 100%;
  }
  
  .hero-buttons .btn {
    width: 100%;
    justify-content: center;
  }
  
  .hero h1 { font-size: 1.8rem; }
  .section-title { font-size: 1.4rem; }
  
  .cta-banner { 
    padding: 40px 20px;
    border-radius: 14px;
  }
  
  .cta-banner h2 { font-size: 1.5rem; }
  
  .container { padding: 0 16px; }
  .header-inner { padding: 0 16px; }
}