*, *::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:#F0F4F8; }

.container { max-width:1200px; margin:0 auto; padding:0 24px; }
.section { padding:80px 0; position:relative; }
.section:nth-child(even) { background:linear-gradient(135deg, #E8F0FE 0%, #F0F4F8 100%); }

/* 导航 — 磁性悬浮效果 */
.site-header { position:fixed; top:0; left:0; width:100%; z-index:1000; background:rgba(240,244,248,0.85); backdrop-filter:blur(20px) saturate(180%); border-bottom:1px solid rgba(99,102,241,0.1); }
.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:8px; font-weight:700; font-size:1.2rem; text-decoration:none; color:#1E1B4B; letter-spacing:-0.5px; }
.logo-icon { width:36px; height:36px; border-radius:12px; display:flex; align-items:center; justify-content:center; font-size:1rem; background:linear-gradient(135deg, #6366F1, #8B5CF6); color:#fff; box-shadow:0 4px 12px rgba(99,102,241,0.3); }
.main-nav { display:flex; align-items:center; gap:24px; list-style:none; }
.main-nav a { text-decoration:none; font-size:0.9rem; font-weight:500; color:#4B5563; transition:0.3s; position:relative; padding:4px 0; }
.main-nav a::after { content:''; position:absolute; bottom:-2px; left:0; width:0; height:2px; background:linear-gradient(90deg, #6366F1, #8B5CF6); transition:0.3s; border-radius:2px; }
.main-nav a:hover { color:#6366F1; }
.main-nav a:hover::after { width:100%; }
.nav-cta { padding:8px 20px; border-radius:20px; color:#fff!important; font-weight:600; background:linear-gradient(135deg, #6366F1, #8B5CF6); box-shadow:0 4px 15px rgba(99,102,241,0.3); transition:0.3s; }
.nav-cta:hover { transform:translateY(-2px); box-shadow:0 6px 20px rgba(99,102,241,0.4); }
.nav-cta::after { display:none!important; }
.menu-toggle { display:none; width:40px; height:40px; border:none; background:rgba(99,102,241,0.1); border-radius:10px; cursor:pointer; align-items:center; justify-content:center; transition:0.3s; }
.menu-toggle:hover { background:rgba(99,102,241,0.2); }
.menu-toggle span { display:block; width:20px; height:2px; background:#6366F1; position:relative; transition:0.3s; }
.menu-toggle span::before, .menu-toggle span::after { content:''; position:absolute; left:0; width:100%; height:2px; background:#6366F1; transition:0.3s; }
.menu-toggle span::before { top:-6px; }
.menu-toggle span::after { top:6px; }

/* 首页Hero — 磁力场概念 */
.hero { min-height:80vh; display:flex; align-items:center; position:relative; overflow:hidden; background:linear-gradient(135deg, #EEF2FF 0%, #E0E7FF 50%, #C7D2FE 100%); }
.hero::before { content:''; position:absolute; top:-50%; left:-50%; width:200%; height:200%; background:radial-gradient(circle at 30% 50%, rgba(99,102,241,0.08) 0%, transparent 50%), radial-gradient(circle at 70% 50%, rgba(139,92,246,0.06) 0%, transparent 50%); animation:float 20s ease-in-out infinite; }
@keyframes float { 0%,100% { transform:translate(0,0) rotate(0deg); } 33% { transform:translate(30px,-30px) rotate(1deg); } 66% { transform:translate(-20px,20px) rotate(-1deg); } }
.hero-content { position:relative; z-index:2; max-width:720px; }
.hero-eyebrow { display:inline-flex; align-items:center; gap:6px; font-size:0.85rem; font-weight:600; padding:6px 18px; border-radius:30px; margin-bottom:16px; background:rgba(99,102,241,0.1); color:#6366F1; border:1px solid rgba(99,102,241,0.2); }
.hero-eyebrow::before { content:'⚡'; font-size:1rem; }
.hero h1 { font-size:3.2rem; line-height:1.15; margin-bottom:20px; color:#1E1B4B; font-weight:800; letter-spacing:-1px; }
.hero h1 span { background:linear-gradient(135deg, #6366F1, #8B5CF6); -webkit-background-clip:text; -webkit-text-fill-color:transparent; }
.hero p { font-size:1.15rem; color:#4B5563; max-width:560px; margin-bottom:32px; line-height:1.7; }
.hero-buttons { display:flex; gap:14px; }
.hero-image { position:relative; z-index:2; border-radius:20px; overflow:hidden; box-shadow:0 20px 60px rgba(99,102,241,0.15); }
.hero-image img { width:100%; height:auto; display:block; }

/* 按钮 — 磁感风格 */
.btn { display:inline-flex; align-items:center; gap:8px; padding:14px 32px; border-radius:30px; 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, #6366F1, #8B5CF6); box-shadow:0 4px 15px rgba(99,102,241,0.3); }
.btn-primary:hover { transform:translateY(-2px); box-shadow:0 8px 25px rgba(99,102,241,0.4); }
.btn-outline { background:transparent; border:2px solid #6366F1; color:#6366F1; }
.btn-outline:hover { background:rgba(99,102,241,0.05); transform:translateY(-2px); box-shadow:0 4px 15px rgba(99,102,241,0.1); }

/* 标签/标题 */
.section-label { display:inline-flex; align-items:center; gap:8px; font-size:0.8rem; font-weight:600; letter-spacing:3px; margin-bottom:12px; color:#6366F1; text-transform:uppercase; }
.section-label::before { content:''; width:24px; height:2px; background:linear-gradient(90deg, #6366F1, #8B5CF6); }
.section-title { font-size:2.2rem; margin-bottom:14px; color:#1E1B4B; font-weight:700; letter-spacing:-0.5px; }
.section-desc { max-width:600px; color:#6B7280; margin-bottom:40px; line-height:1.7; }

/* 卡片网格 — 磁性卡片 */
.cards-grid { display:grid; grid-template-columns:repeat(auto-fill,minmax(280px,1fr)); gap:24px; }
.category-card { border-radius:16px; padding:32px; background:#fff; border:1px solid rgba(99,102,241,0.08); transition:0.3s; position:relative; overflow:hidden; }
.category-card::before { content:''; position:absolute; top:0; left:0; width:100%; height:4px; background:linear-gradient(90deg, #6366F1, #8B5CF6); transform:scaleX(0); transform-origin:left; transition:0.4s; }
.category-card:hover { transform:translateY(-4px); box-shadow:0 12px 40px rgba(99,102,241,0.12); border-color:rgba(99,102,241,0.15); }
.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:16px; font-size:1.5rem; background:linear-gradient(135deg, #EEF2FF, #E0E7FF); color:#6366F1; }
.category-card h3 { font-size:1.15rem; margin-bottom:8px; color:#1E1B4B; }
.category-card p { color:#6B7280; font-size:0.9rem; line-height:1.6; margin-bottom:16px; }
.card-link { font-weight:600; font-size:0.85rem; text-decoration:none; color:#6366F1; 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:56px; align-items:center; }
.feature-image { border-radius:16px; overflow:hidden; box-shadow:0 12px 40px rgba(99,102,241,0.1); }
.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:10px; color:#4B5563; border-bottom:1px solid rgba(99,102,241,0.06); }
.feature-list li:last-child { border-bottom:none; }
.feature-list li::before { content:'⚡'; font-weight:700; color:#6366F1; }

/* 数据条 — 磁力数据 */
.stats-bar { display:grid; grid-template-columns:repeat(4,1fr); gap:24px; text-align:center; }
.stat-item { padding:32px 24px; border-radius:16px; background:#fff; border:1px solid rgba(99,102,241,0.08); transition:0.3s; }
.stat-item:hover { transform:translateY(-3px); box-shadow:0 8px 30px rgba(99,102,241,0.1); }
.stat-number { font-size:2.5rem; font-weight:800; background:linear-gradient(135deg, #6366F1, #8B5CF6); -webkit-background-clip:text; -webkit-text-fill-color:transparent; }
.stat-label { font-size:0.9rem; color:#6B7280; margin-top:8px; }

/* 内容墙 — 磁力网格 */
.content-wall { display:grid; grid-template-columns:repeat(auto-fill,minmax(300px,1fr)); gap:24px; }
.content-wall-item { border-radius:16px; overflow:hidden; background:#fff; border:1px solid rgba(99,102,241,0.08); transition:0.3s; }
.content-wall-item:hover { transform:translateY(-4px); box-shadow:0 12px 40px rgba(99,102,241,0.12); }
.content-wall-item img { width:100%; height:200px; object-fit:cover; transition:0.4s; }
.content-wall-item:hover img { transform:scale(1.05); }
.content-wall-body { padding:24px; }
.content-wall-body h3 { font-size:1.1rem; margin-bottom:8px; color:#1E1B4B; }
.content-wall-body p { color:#6B7280; font-size:0.9rem; line-height:1.6; }

/* FAQ — 磁性折叠 */
.faq-list { max-width:800px; margin:0 auto; }
.faq-item { border:1px solid rgba(99,102,241,0.1); border-radius:14px; margin-bottom:10px; overflow:hidden; cursor:pointer; background:#fff; transition:0.3s; }
.faq-item:hover { border-color:rgba(99,102,241,0.2); }
.faq-item .faq-question { padding:20px 24px; font-weight:600; display:flex; justify-content:space-between; align-items:center; color:#1E1B4B; }
.faq-item .faq-question::after { content:'+'; font-size:1.2rem; color:#6366F1; transition:0.3s; }
.faq-item.open .faq-question::after { content:'−'; }
.faq-item .faq-answer { padding:0 24px 20px; display:none; color:#6B7280; line-height:1.7; }
.faq-item.open .faq-answer { display:block; }
.faq-item.open { border-color:rgba(99,102,241,0.3); box-shadow:0 4px 20px rgba(99,102,241,0.06); }

/* CTA横幅 — 磁力吸引 */
.cta-banner { padding:64px 32px; text-align:center; border-radius:20px; background:linear-gradient(135deg, #6366F1, #8B5CF6); 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 50%), radial-gradient(circle at 70% 50%, rgba(255,255,255,0.05) 0%, transparent 50%); animation:float 30s ease-in-out infinite; }
.cta-banner h2 { color:#fff; font-size:2rem; position:relative; z-index:2; }
.cta-banner p { color:rgba(255,255,255,0.8); margin:16px 0 32px; position:relative; z-index:2; }
.cta-banner .btn-primary { background:#fff; color:#6366F1; box-shadow:0 4px 15px rgba(0,0,0,0.1); position:relative; z-index:2; }
.cta-banner .btn-primary:hover { transform:translateY(-2px); box-shadow:0 8px 25px rgba(0,0,0,0.15); }

/* 页脚 — 磁力底部 */
.site-footer { padding:64px 0 32px; background:#1E1B4B; color:rgba(255,255,255,0.8); }
.site-footer .container { }
.footer-grid { display:grid; grid-template-columns:2fr 1fr 1fr 1fr; gap:40px; }
.footer-brand { }
.footer-brand .logo { color:#fff; margin-bottom:16px; }
.footer-brand p { font-size:0.9rem; line-height:1.7; opacity:0.7; }
.footer-col h4 { color:#fff; font-size:1rem; margin-bottom:16px; font-weight:600; }
.footer-col ul { list-style:none; }
.footer-col ul li { margin-bottom:8px; }
.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:#6366F1; }
.footer-bottom { border-top:1px solid rgba(255,255,255,0.08); margin-top:40px; padding-top:24px; text-align:center; font-size:0.85rem; opacity:0.6; }

/* 工具类 */
.text-accent { color:#6366F1; }
.text-center { text-align:center; }
.seo-description { max-width:600px; margin:0 auto 48px; color:#6B7280; line-height:1.7; }
.mt-0 { margin-top:0; }
.mb-0 { margin-bottom:0; }

/* ⚠️ 响应式 */
@media (max-width: 768px) {
  .hero h1 { font-size:2.2rem; }
  .feature-block { grid-template-columns:1fr; }
  .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(240,244,248,0.98); backdrop-filter:blur(20px); padding:24px; border-bottom:1px solid rgba(99,102,241,0.1); }
  .main-nav.open a { padding:12px 0; }
}
@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; }
}