* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    color: #333; background: #fff; line-height: 1.7; font-size: 15px;
    -webkit-font-smoothing: antialiased;
}
a { color: #1e6fdb; text-decoration: none; transition: color 0.2s; }
a:hover { color: #0d4ea3; }
img { max-width: 100%; display: block; }
.container { max-width: 1180px; margin: 0 auto; padding: 0 24px; }

.header { background: #fff; border-bottom: 1px solid #eef0f3; position: sticky; top: 0; z-index: 100; box-shadow: 0 1px 3px rgba(0,0,0,0.03); }
.header-inner { display: flex; justify-content: space-between; align-items: center; height: 72px; }
.logo { display: flex; align-items: center; gap: 12px; color: #1a2c4e; font-weight: 600; font-size: 18px; }
.logo-icon { width: 40px; height: 40px; background: linear-gradient(135deg, #1e6fdb 0%, #0d4ea3 100%); border-radius: 8px; display: flex; align-items: center; justify-content: center; color: #fff; font-weight: 700; font-size: 18px; letter-spacing: -1px; }
.nav { display: flex; gap: 8px; }
.nav a { padding: 8px 18px; color: #4a5568; font-size: 15px; border-radius: 6px; transition: all 0.2s; }
.nav a:hover, .nav a.active { background: #f0f6ff; color: #1e6fdb; }

.hero { background: linear-gradient(135deg, #1a2c4e 0%, #1e6fdb 100%); color: #fff; padding: 96px 0 88px; position: relative; overflow: hidden; }
.hero::before { content: ""; position: absolute; top: -50%; right: -10%; width: 600px; height: 600px; background: radial-gradient(circle, rgba(255,255,255,0.08) 0%, transparent 70%); border-radius: 50%; }
.hero-inner { position: relative; z-index: 1; max-width: 760px; }
.hero-tag { display: inline-block; background: rgba(255,255,255,0.15); padding: 6px 16px; border-radius: 100px; font-size: 13px; margin-bottom: 24px; letter-spacing: 1px; }
.hero h1 { font-size: 44px; font-weight: 700; line-height: 1.3; margin-bottom: 20px; letter-spacing: 1px; }
.hero p { font-size: 17px; opacity: 0.9; margin-bottom: 36px; line-height: 1.8; }
.hero-btns { display: flex; gap: 16px; flex-wrap: wrap; }
.btn { display: inline-block; padding: 13px 32px; border-radius: 6px; font-size: 15px; font-weight: 500; cursor: pointer; transition: all 0.2s; border: none; }
.btn-primary { background: #fff; color: #1e6fdb; }
.btn-primary:hover { background: #f0f6ff; transform: translateY(-1px); box-shadow: 0 4px 12px rgba(0,0,0,0.15); }
.btn-outline { background: transparent; color: #fff; border: 1px solid rgba(255,255,255,0.4); }
.btn-outline:hover { background: rgba(255,255,255,0.1); border-color: #fff; color: #fff; }

.section { padding: 80px 0; }
.section-light { background: #f8fafc; }
.section-title { text-align: center; margin-bottom: 56px; }
.section-title h2 { font-size: 32px; color: #1a2c4e; margin-bottom: 12px; font-weight: 700; }
.section-title p { color: #718096; font-size: 16px; }
.section-title::after { content: ""; display: block; width: 48px; height: 3px; background: linear-gradient(90deg, #1e6fdb, #4a9eff); margin: 20px auto 0; border-radius: 2px; }

.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; margin-top: 48px; }
.stat-item { text-align: center; padding: 32px 16px; background: #fff; border-radius: 12px; border: 1px solid #eef0f3; transition: all 0.3s; }
.stat-item:hover { transform: translateY(-4px); box-shadow: 0 10px 30px rgba(0,0,0,0.06); border-color: #c6dffd; }
.stat-num { font-size: 36px; color: #1e6fdb; font-weight: 700; margin-bottom: 8px; }
.stat-label { color: #718096; font-size: 14px; }

.services { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.service-card { background: #fff; padding: 36px 28px; border-radius: 12px; border: 1px solid #eef0f3; transition: all 0.3s; }
.service-card:hover { transform: translateY(-4px); box-shadow: 0 12px 32px rgba(30,111,219,0.08); border-color: #c6dffd; }
.service-icon { width: 56px; height: 56px; border-radius: 12px; background: linear-gradient(135deg, #e6f0ff 0%, #d2e4ff 100%); display: flex; align-items: center; justify-content: center; margin-bottom: 20px; font-size: 24px; }
.service-card h3 { font-size: 19px; color: #1a2c4e; margin-bottom: 12px; font-weight: 600; }
.service-card p { color: #4a5568; font-size: 14px; line-height: 1.8; }

.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.about-text h2 { font-size: 30px; color: #1a2c4e; margin-bottom: 20px; line-height: 1.3; }
.about-text p { color: #4a5568; margin-bottom: 16px; font-size: 15px; line-height: 1.9; }
.about-features { margin-top: 28px; }
.about-features li { list-style: none; padding: 10px 0 10px 28px; position: relative; color: #2d3748; }
.about-features li::before { content: "✓"; position: absolute; left: 0; top: 10px; width: 20px; height: 20px; background: #1e6fdb; color: #fff; border-radius: 50%; text-align: center; line-height: 20px; font-size: 12px; font-weight: 700; }
.about-image { background: linear-gradient(135deg, #1e6fdb 0%, #1a2c4e 100%); border-radius: 16px; aspect-ratio: 4/3; display: flex; align-items: center; justify-content: center; color: #fff; font-size: 80px; box-shadow: 0 20px 60px rgba(30,111,219,0.2); }

.contact-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.contact-card { background: #fff; border-radius: 12px; padding: 32px 24px; text-align: center; border: 1px solid #eef0f3; transition: all 0.3s; }
.contact-card:hover { transform: translateY(-4px); box-shadow: 0 12px 32px rgba(0,0,0,0.06); }
.contact-icon { width: 64px; height: 64px; border-radius: 50%; background: linear-gradient(135deg, #e6f0ff 0%, #d2e4ff 100%); display: flex; align-items: center; justify-content: center; margin: 0 auto 16px; font-size: 26px; }
.contact-card h3 { font-size: 16px; color: #1a2c4e; margin-bottom: 8px; font-weight: 600; }
.contact-card p { color: #4a5568; font-size: 15px; line-height: 1.7; }

.cta { background: linear-gradient(135deg, #1a2c4e 0%, #1e6fdb 100%); color: #fff; text-align: center; padding: 72px 0; }
.cta h2 { font-size: 30px; margin-bottom: 14px; font-weight: 700; }
.cta p { opacity: 0.9; margin-bottom: 28px; font-size: 16px; }

.footer { background: #0e1a2e; color: #a0aec0; padding: 56px 0 0; font-size: 14px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 48px; padding-bottom: 40px; }
.footer-col h4 { color: #fff; font-size: 15px; margin-bottom: 20px; font-weight: 600; }
.footer-col p, .footer-col li { color: #94a3b8; line-height: 2; list-style: none; font-size: 13px; }
.footer-col a { color: #94a3b8; }
.footer-col a:hover { color: #fff; }
.footer-brand { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; color: #fff; font-size: 17px; font-weight: 600; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); padding: 24px 0; text-align: center; font-size: 13px; color: #718096; }
.footer-bottom a { color: #94a3b8; margin: 0 6px; }
.footer-bottom a:hover { color: #fff; }

@media (max-width: 900px) {
    .stats, .services, .contact-grid { grid-template-columns: repeat(2, 1fr); }
    .about-grid, .footer-grid { grid-template-columns: 1fr; gap: 32px; }
    .hero h1 { font-size: 32px; }
    .hero { padding: 64px 0 56px; }
    .section { padding: 56px 0; }
    .section-title h2 { font-size: 26px; }
}
@media (max-width: 600px) {
    .nav { display: none; }
    .stats, .services, .contact-grid { grid-template-columns: 1fr; }
    .hero h1 { font-size: 26px; }
    .container { padding: 0 16px; }
    .about-image { font-size: 56px; }
}