/* 磁力多 - 流体玻璃主义风格 */
/* 独特风格：半透明玻璃层叠 + 柔光渐变 + 微妙的动态光晕 */

*, *::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: #f0f4fc;
  background-image: 
    radial-gradient(ellipse 80% 60% at 10% 20%, rgba(120, 180, 255, 0.15) 0%, transparent 60%),
    radial-gradient(ellipse 60% 50% at 90% 80%, rgba(180, 220, 255, 0.2) 0%, transparent 50%),
    radial-gradient(ellipse 50% 40% at 50% 50%, rgba(200, 230, 255, 0.1) 0%, transparent 50%);
  background-attachment: fixed;
  min-height: 100vh;
}

.container { max-width:1200px; margin:0 auto; padding:0 24px; }
.section { padding:80px 0; position: relative; }
.section:nth-child(even) { 
  background: rgba(255,255,255,0.5); 
  backdrop-filter: blur(20px);
  border-top: 1px solid rgba(255,255,255,0.6);
  border-bottom: 1px solid rgba(255,255,255,0.6);
}

/* 导航 - 毛玻璃 */
.site-header { 
  position:fixed; top:0; left:0; width:100%; z-index:1000; 
  background: rgba(255,255,255,0.6); 
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid rgba(255,255,255,0.8);
  box-shadow: 0 1px 20px rgba(120, 180, 255, 0.08);
}
.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:700; font-size:1.25rem; text-decoration:none; 
  color: #1a2a4a; 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, #7ab8ff, #4a8aff);
  color: white;
  box-shadow: 0 4px 12px rgba(74, 138, 255, 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; 
  color: #2a3a5a; transition:0.3s; position: relative;
  letter-spacing: 0.3px;
}
.main-nav a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, #7ab8ff, #4a8aff);
  transition: width 0.3s ease;
  border-radius: 2px;
}
.main-nav a:hover { color: #4a8aff; }
.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, #7ab8ff, #4a8aff);
  box-shadow: 0 4px 16px rgba(74, 138, 255, 0.3);
  transition: all 0.3s ease!important;
}
.nav-cta::after { display: none!important; }
.nav-cta:hover { 
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(74, 138, 255, 0.4);
}
.menu-toggle { display:none; }

/* Hero - 玻璃卡片 */
.hero { 
  min-height:85vh; display:flex; align-items:center; 
  position: relative;
  padding-top: 72px;
}
.hero::before {
  content: '';
  position: absolute;
  top: 10%;
  right: 5%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(122, 184, 255, 0.15), transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}
.hero-content { 
  max-width:680px; 
  background: rgba(255,255,255,0.5);
  backdrop-filter: blur(30px);
  -webkit-backdrop-filter: blur(30px);
  padding: 48px 40px;
  border-radius: 24px;
  border: 1px solid rgba(255,255,255,0.8);
  box-shadow: 0 8px 40px rgba(120, 180, 255, 0.1);
  position: relative;
}
.hero-eyebrow { 
  display:inline-block; font-size:0.8rem; font-weight:600; 
  padding:6px 18px; border-radius:50px; margin-bottom:20px; 
  background: linear-gradient(135deg, rgba(122, 184, 255, 0.2), rgba(74, 138, 255, 0.2));
  color: #4a6a9a;
  letter-spacing: 1px;
}
.hero h1 { 
  font-size:3rem; line-height:1.15; margin-bottom:20px; 
  color: #1a2a4a;
  font-weight: 800;
  letter-spacing: -0.5px;
}
.hero h1 span {
  background: linear-gradient(135deg, #7ab8ff, #4a8aff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero p { 
  font-size:1.1rem; opacity:0.7; max-width:520px; margin-bottom:32px; 
  color: #3a4a6a;
  line-height: 1.7;
}
.hero-buttons { display:flex; gap:14px; }
.hero-image { 
  border-radius:20px; overflow:hidden; 
  background: rgba(255,255,255,0.3);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255,255,255,0.6);
  box-shadow: 0 8px 32px rgba(120, 180, 255, 0.1);
}
.hero-image img { width:100%; height:auto; display: block; }

/* 按钮 - 玻璃态 */
.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;
  letter-spacing: 0.3px;
}
.btn-primary { 
  color:#fff; 
  background: linear-gradient(135deg, #7ab8ff, #4a8aff);
  box-shadow: 0 4px 16px rgba(74, 138, 255, 0.3);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(74, 138, 255, 0.4);
}
.btn-outline { 
  background: rgba(255,255,255,0.5); 
  border:1.5px solid rgba(74, 138, 255, 0.3);
  color: #4a6a9a;
  backdrop-filter: blur(10px);
}
.btn-outline:hover {
  background: rgba(255,255,255,0.8);
  border-color: #4a8aff;
}

/* 标签/标题 */
.section-label { 
  display:inline-block; font-size:0.75rem; font-weight:600; 
  letter-spacing:2px; margin-bottom:12px; 
  color: #7ab8ff;
  text-transform: uppercase;
}
.section-title { 
  font-size:2.2rem; margin-bottom:14px; 
  color: #1a2a4a;
  font-weight: 700;
  letter-spacing: -0.3px;
}
.section-desc { 
  max-width:600px; opacity:0.7; margin-bottom:40px; 
  color: #4a5a7a;
  line-height: 1.7;
}

/* 卡片网格 - 玻璃卡片 */
.cards-grid { 
  display:grid; 
  grid-template-columns:repeat(auto-fill,minmax(280px,1fr)); 
  gap:24px; 
}
.category-card { 
  border-radius:20px; padding:32px; 
  background: rgba(255,255,255,0.5);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border:1px solid rgba(255,255,255,0.7);
  transition:0.3s; 
  box-shadow: 0 4px 20px rgba(120, 180, 255, 0.06);
}
.category-card:hover { 
  transform:translateY(-6px); 
  box-shadow:0 8px 32px rgba(74, 138, 255, 0.15);
  background: rgba(255,255,255,0.7);
  border-color: rgba(122, 184, 255, 0.3);
}
.card-icon { 
  width:52px; height:52px; 
  border-radius:14px; 
  display:flex; align-items:center; justify-content:center; 
  margin-bottom:20px; font-size:1.5rem;
  background: linear-gradient(135deg, rgba(122, 184, 255, 0.2), rgba(74, 138, 255, 0.2));
  color: #4a8aff;
}
.card-link { 
  font-weight:600; font-size:0.85rem; text-decoration:none; 
  color: #4a8aff;
  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:60px; align-items:center; 
}
.feature-image { 
  border-radius:20px; overflow:hidden; 
  background: rgba(255,255,255,0.4);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255,255,255,0.6);
  box-shadow: 0 8px 32px rgba(120, 180, 255, 0.08);
}
.feature-image img { width:100%; height:auto; display: block; }
.feature-text { }
.feature-list { list-style:none; }
.feature-list li { 
  padding:8px 0; display:flex; align-items:center; gap:10px; 
  color: #3a4a6a;
  font-size: 1rem;
}
.feature-list li::before { 
  content:'✓'; font-weight:700; 
  color: #4a8aff;
  background: rgba(74, 138, 255, 0.1);
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
}

/* 数据条 */
.stats-bar { 
  display:grid; grid-template-columns:repeat(4,1fr); gap:20px; text-align:center; 
}
.stat-item { 
  padding:32px 24px; border-radius:20px; 
  background: rgba(255,255,255,0.5);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border:1px solid rgba(255,255,255,0.7);
  box-shadow: 0 4px 20px rgba(120, 180, 255, 0.06);
  transition: 0.3s;
}
.stat-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 28px rgba(74, 138, 255, 0.12);
}
.stat-number { 
  font-size:2.5rem; font-weight:800; 
  background: linear-gradient(135deg, #7ab8ff, #4a8aff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.stat-label { 
  font-size:0.9rem; opacity:0.6; margin-top:8px; 
  color: #4a5a7a;
}

/* 内容墙 */
.content-wall { 
  display:grid; grid-template-columns:repeat(auto-fill,minmax(300px,1fr)); gap:24px; 
}
.content-wall-item { 
  border-radius:20px; overflow:hidden; 
  background: rgba(255,255,255,0.5);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border:1px solid rgba(255,255,255,0.7);
  transition:0.3s; 
  box-shadow: 0 4px 20px rgba(120, 180, 255, 0.06);
}
.content-wall-item:hover { 
  transform:translateY(-6px); 
  box-shadow:0 8px 32px rgba(74, 138, 255, 0.15);
  background: rgba(255,255,255,0.7);
}
.content-wall-item img { 
  width:100%; height:200px; object-fit:cover; 
  border-bottom: 1px solid rgba(255,255,255,0.3);
}
.content-wall-body { padding:24px; }
.content-wall-body h3 { color: #1a2a4a; margin-bottom: 8px; }
.content-wall-body p { color: #4a5a7a; font-size: 0.9rem; line-height: 1.6; opacity: 0.7; }

/* FAQ */
.faq-list { max-width:800px; margin:0 auto; }
.faq-item { 
  border:1px solid rgba(255,255,255,0.7); border-radius:16px; margin-bottom:10px; 
  overflow:hidden; cursor:pointer; 
  background: rgba(255,255,255,0.4);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  transition: 0.3s;
}
.faq-item:hover {
  background: rgba(255,255,255,0.6);
}
.faq-item .faq-question { 
  padding:20px 24px; font-weight:600; 
  display:flex; justify-content:space-between; 
  color: #1a2a4a;
  font-size: 1rem;
}
.faq-item .faq-question::after {
  content: '+';
  font-size: 1.2rem;
  color: #4a8aff;
  transition: transform 0.3s;
}
.faq-item.open .faq-question::after {
  transform: rotate(45deg);
}
.faq-item .faq-answer { 
  padding:0 24px 20px; display:none; 
  opacity:0.7; color: #3a4a6a;
  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, rgba(122, 184, 255, 0.3), rgba(74, 138, 255, 0.3));
  backdrop-filter: blur(30px);
  -webkit-backdrop-filter: blur(30px);
  border: 1px solid rgba(255,255,255,0.6);
  box-shadow: 0 8px 40px rgba(74, 138, 255, 0.1);
  position: relative;
  overflow: hidden;
}
.cta-banner::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 60%);
  animation: shimmer 8s ease-in-out infinite;
}
@keyframes shimmer {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(10%, 10%); }
}
.cta-banner h2 { 
  color: #1a2a4a; 
  font-size: 2rem;
  margin-bottom: 16px;
  position: relative;
}
.cta-banner p {
  color: #3a4a6a;
  margin-bottom: 24px;
  position: relative;
}
.cta-banner .btn-primary { 
  background: #1a2a4a;
  color: #fff!important;
  box-shadow: 0 4px 16px rgba(26, 42, 74, 0.3);
}
.cta-banner .btn-primary:hover {
  box-shadow: 0 8px 28px rgba(26, 42, 74, 0.4);
}

/* 页脚 */
.site-footer { 
  padding:64px 0 32px; 
  background: rgba(26, 42, 74, 0.03);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-top: 1px solid rgba(255,255,255,0.5);
}
.site-footer .container { }
.footer-grid { 
  display:grid; grid-template-columns:2fr 1fr 1fr 1fr; gap:48px; 
}
.footer-brand { }
.footer-brand .logo { margin-bottom: 16px; }
.footer-brand p { color: #4a5a7a; font-size: 0.9rem; line-height: 1.7; opacity: 0.7; }
.footer-col { }
.footer-col h4 { 
  color: #1a2a4a; margin-bottom: 16px; font-size: 0.95rem; 
  font-weight: 600;
}
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 8px; }
.footer-col ul li a { 
  color: #4a5a7a; text-decoration: none; font-size: 0.9rem; 
  transition: 0.3s; opacity: 0.7;
}
.footer-col ul li a:hover { color: #4a8aff; opacity: 1; }
.footer-bottom { 
  border-top:1px solid rgba(74, 138, 255, 0.1); 
  margin-top:48px; padding-top:24px; text-align:center; 
  font-size:0.85rem; color: #4a5a7a; opacity: 0.6;
}

/* 工具类 */
.text-accent { color: #4a8aff; }
.text-center { text-align:center; }
.seo-description { max-width:600px; margin:0 auto 48px; opacity:0.7; color: #4a5a7a; }
.mt-0 { margin-top:0; }
.mb-0 { margin-bottom:0; }

/* 响应式 */
@media (max-width: 768px) {
  .hero-content { padding: 32px 24px; }
  .hero h1 { font-size: 2.2rem; }
  .feature-block { grid-template-columns:1fr; gap: 32px; }
  .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; background: none; border: none; font-size: 1.5rem; cursor: pointer; color: #1a2a4a; }
  .main-nav.open { 
    display:flex; flex-direction:column; 
    position:absolute; top:72px; left:0; width:100%; 
    background: rgba(255,255,255,0.9);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding:24px; gap: 16px;
    border-bottom: 1px solid rgba(255,255,255,0.8);
  }
}
@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; }
  .section-title { font-size: 1.6rem; }
}