/* 磁力天堂 - 磁吸万象，引力无限 */
/* 风格：极简白 + 磁感渐变流体 + 金属光泽 */
/* 主色：浅灰白底 + 电光蓝/磁紫渐变 + 银灰点缀 */
/* 非传统组合：白底 + 蓝紫色渐变 + 玫瑰金高光 */

*, *::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: #fafbfc;
  color: #1a1a2e;
}

/* 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(135deg, #f0f4ff 0%, #faf0ff 100%); }

/* 导航 — 磁感玻璃态 */
.site-header { 
  position:fixed; top:0; left:0; width:100%; z-index:1000; 
  background: rgba(255,255,255,0.85); 
  backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid rgba(180, 160, 255, 0.15);
  box-shadow: 0 4px 30px rgba(100, 80, 200, 0.05);
}
.header-inner { 
  display:flex; align-items:center; justify-content:space-between; 
  height:72px; 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;
}
.logo-icon { 
  width:40px; height:40px; border-radius:12px; 
  display:flex; align-items:center; justify-content:center; 
  font-size:1.2rem;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: #fff;
  box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}
.main-nav { display:flex; align-items:center; gap:32px; list-style:none; }
.main-nav a { 
  text-decoration:none; font-size:0.9rem; font-weight:500; 
  transition:0.3s; color: #4a4a6a;
  position:relative;
}
.main-nav a::after {
  content: '';
  position:absolute; bottom:-4px; left:0; width:0; height:2px;
  background: linear-gradient(90deg, #667eea, #764ba2);
  transition:0.3s;
  border-radius:2px;
}
.main-nav a:hover { color: #667eea; }
.main-nav a:hover::after { width:100%; }
.nav-cta { 
  padding:10px 24px; border-radius:50px; 
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color:#fff!important; font-weight:600;
  box-shadow: 0 4px 20px rgba(102, 126, 234, 0.3);
  transition:0.3s;
}
.nav-cta::after { display:none!important; }
.nav-cta:hover { transform: translateY(-2px); box-shadow: 0 6px 25px rgba(102, 126, 234, 0.4); }
.menu-toggle { display:none; }

/* 首页Hero — 磁感流体 */
.hero { 
  min-height:85vh; display:flex; align-items:center; 
  background: linear-gradient(135deg, #fafbfc 0%, #f0f4ff 50%, #faf0ff 100%);
  position:relative;
  overflow:hidden;
}
.hero::before {
  content: '';
  position:absolute; top:-30%; right:-10%; width:600px; height:600px;
  background: radial-gradient(circle, rgba(102,126,234,0.08) 0%, transparent 70%);
  border-radius:50%;
  pointer-events:none;
}
.hero::after {
  content: '';
  position:absolute; bottom:-20%; left:-5%; width:500px; height:500px;
  background: radial-gradient(circle, rgba(118,75,162,0.06) 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:6px 18px; border-radius:50px; margin-bottom:20px;
  background: linear-gradient(135deg, rgba(102,126,234,0.1), rgba(118,75,162,0.1));
  color: #667eea;
  letter-spacing:1px;
  text-transform:uppercase;
}
.hero h1 { 
  font-size:3.2rem; line-height:1.15; margin-bottom:20px;
  background: linear-gradient(135deg, #1a1a2e 0%, #667eea 50%, #764ba2 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -1px;
}
.hero p { 
  font-size:1.15rem; opacity:0.7; max-width:560px; margin-bottom:36px;
  color: #4a4a6a;
  line-height:1.7;
}
.hero-buttons { display:flex; gap:16px; }
.hero-image { border-radius:16px; overflow:hidden; box-shadow: 0 20px 60px rgba(102,126,234,0.1); }
.hero-image img { width:100%; height:auto; }

/* 按钮 — 磁感渐变 */
.btn { 
  display:inline-flex; align-items:center; gap:8px; 
  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, #667eea 0%, #764ba2 100%);
  box-shadow: 0 4px 20px rgba(102, 126, 234, 0.3);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(102, 126, 234, 0.4); }
.btn-outline { 
  background:transparent; border:1.5px solid rgba(102,126,234,0.3);
  color: #667eea;
}
.btn-outline:hover { border-color: #667eea; background: rgba(102,126,234,0.05); }

/* 标签/标题 */
.section-label { 
  display:inline-block; font-size:0.8rem; font-weight:700; 
  letter-spacing:3px; margin-bottom:12px;
  color: #667eea;
  text-transform:uppercase;
}
.section-title { 
  font-size:2.2rem; margin-bottom:14px;
  font-weight:800;
  letter-spacing: -0.5px;
}
.section-desc { max-width:600px; opacity:0.7; margin-bottom:40px; color: #4a4a6a; }

/* 卡片网格 — 磁感悬浮 */
.cards-grid { display:grid; grid-template-columns:repeat(auto-fill,minmax(280px,1fr)); gap:24px; }
.category-card { 
  border-radius:16px; padding:32px; 
  background: rgba(255,255,255,0.7);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,0.5);
  transition:0.4s;
  box-shadow: 0 4px 20px rgba(0,0,0,0.03);
}
.category-card:hover { 
  transform:translateY(-6px); 
  box-shadow: 0 12px 40px rgba(102,126,234,0.1);
  border-color: rgba(102,126,234,0.2);
}
.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(102,126,234,0.1), rgba(118,75,162,0.1));
  color: #667eea;
}
.card-link { 
  font-weight:600; font-size:0.85rem; text-decoration:none;
  color: #667eea;
  display:inline-flex; align-items:center; gap:6px;
  transition:0.3s;
}
.card-link:hover { gap:10px; }

/* 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 20px 60px rgba(102,126,234,0.08);
}
.feature-image img { width:100%; height:auto; }
.feature-text h3 { font-size:1.6rem; margin-bottom:16px; font-weight:700; }
.feature-list { list-style:none; }
.feature-list li { 
  padding:8px 0; display:flex; align-items:center; gap:10px;
  font-size:1rem;
}
.feature-list li::before { 
  content:'✓'; font-weight:700; 
  width:24px; height:24px; display:flex; align-items:center; justify-content:center;
  background: linear-gradient(135deg, rgba(102,126,234,0.1), rgba(118,75,162,0.1));
  border-radius:50%;
  color: #667eea;
  font-size:0.8rem;
}

/* 数据条 */
.stats-bar { display:grid; grid-template-columns:repeat(4,1fr); gap:24px; text-align:center; }
.stat-item { 
  padding:28px 20px; border-radius:16px; 
  background: rgba(255,255,255,0.6);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,0.5);
  transition:0.3s;
}
.stat-item:hover { transform: translateY(-3px); box-shadow: 0 8px 30px rgba(102,126,234,0.08); }
.stat-number { 
  font-size:2.4rem; font-weight:800;
  background: linear-gradient(135deg, #667eea, #764ba2);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.stat-label { font-size:0.9rem; opacity:0.6; margin-top:6px; color: #4a4a6a; }

/* 内容墙 */
.content-wall { display:grid; grid-template-columns:repeat(auto-fill,minmax(300px,1fr)); gap:24px; }
.content-wall-item { 
  border-radius:16px; overflow:hidden; 
  background: rgba(255,255,255,0.7);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,0.5);
  transition:0.4s;
}
.content-wall-item:hover { 
  transform:translateY(-6px); 
  box-shadow: 0 12px 40px rgba(102,126,234,0.1);
}
.content-wall-item img { width:100%; height:220px; object-fit:cover; }
.content-wall-body { padding:24px; }
.content-wall-body h4 { font-weight:700; margin-bottom:8px; }
.content-wall-body p { opacity:0.6; font-size:0.9rem; }

/* FAQ */
.faq-list { max-width:800px; margin:0 auto; }
.faq-item { 
  border: 1px solid rgba(102,126,234,0.1); 
  border-radius:14px; margin-bottom:10px; 
  overflow:hidden; cursor:pointer;
  background: rgba(255,255,255,0.5);
  backdrop-filter: blur(10px);
  transition:0.3s;
}
.faq-item:hover { border-color: rgba(102,126,234,0.2); }
.faq-item .faq-question { 
  padding:18px 24px; font-weight:600; 
  display:flex; justify-content:space-between;
  color: #1a1a2e;
}
.faq-item .faq-question::after {
  content: '+';
  font-size:1.2rem;
  color: #667eea;
  transition:0.3s;
}
.faq-item.open .faq-question::after { content: '−'; }
.faq-item .faq-answer { padding:0 24px 18px; 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:20px; 
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color:#fff;
  box-shadow: 0 20px 60px rgba(102,126,234,0.2);
}
.cta-banner h2 { color:#fff; font-size:2rem; }
.cta-banner p { color: rgba(255,255,255,0.8); max-width:500px; margin:12px auto 28px; }
.cta-banner .btn-primary { 
  background:#fff; color: #667eea;
  box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}
.cta-banner .btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(0,0,0,0.15); }

/* 页脚 */
.site-footer { 
  padding:64px 0 32px; 
  background: linear-gradient(135deg, #1a1a2e 0%, #2d2d4e 100%);
  color: rgba(255,255,255,0.8);
}
.footer-grid { display:grid; grid-template-columns:2fr 1fr 1fr 1fr; gap:48px; }
.footer-brand h3 { color:#fff; font-size:1.2rem; margin-bottom:12px; }
.footer-brand p { opacity:0.6; font-size:0.9rem; line-height:1.7; }
.footer-col h4 { color:#fff; font-size:0.95rem; margin-bottom:16px; font-weight:600; }
.footer-col ul { list-style:none; }
.footer-col ul li { padding:4px 0; }
.footer-col ul a { color: rgba(255,255,255,0.6); text-decoration:none; font-size:0.9rem; transition:0.3s; }
.footer-col ul a:hover { color: rgba(255,255,255,0.9); }
.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 { 
  background: linear-gradient(135deg, #667eea, #764ba2);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.text-center { text-align:center; }
.seo-description { max-width:600px; margin:0 auto 48px; opacity:0.7; color: #4a4a6a; }
.mt-0 { margin-top:0; }
.mb-0 { margin-bottom:0; }

/* ⚠️ 响应式 */
@media (max-width: 1024px) {
  .hero h1 { font-size:2.6rem; }
  .section-title { font-size:1.8rem; }
}

@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; gap:32px; }
  .main-nav { display:none; }
  .menu-toggle { display:flex; }
  .main-nav.open { 
    display:flex; flex-direction:column; 
    position:absolute; top:72px; left:0; width:100%; 
    background: rgba(255,255,255,0.98);
    backdrop-filter: blur(20px);
    padding:24px; gap:16px;
    border-bottom: 1px solid rgba(102,126,234,0.1);
  }
  .hero { min-height:60vh; }
  .hero h1 { font-size:2rem; }
  .hero-content { max-width:100%; }
  .hero-image { display:none; }
  .cards-grid { grid-template-columns:1fr 1fr; }
}

@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:1.7rem; }
  .section-title { font-size:1.5rem; }
  .stats-bar { grid-template-columns:1fr; }
}