/* ====== 明点跨境官网 ====== */
:root {
  --blue: #2563eb;
  --blue-light: #3b82f6;
  --blue-dark: #1d4ed8;
  --blue-bg: #eff6ff;
  --text: #1e293b;
  --text-light: #64748b;
  --bg: #ffffff;
  --bg-alt: #f8fafc;
  --border: #e2e8f0;
  --radius: 12px;
}

* { margin:0; padding:0; box-sizing:border-box; }
body {
  font-family: 'Noto Sans SC', system-ui, -apple-system, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
}
a { color: var(--blue); text-decoration: none; }
.container { max-width: 1100px; margin: 0 auto; padding: 0 24px; }

/* Nav */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(255,255,255,0.95); backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: 1100px; margin: 0 auto; padding: 0 24px;
  display: flex; justify-content: space-between; align-items: center; height: 64px;
}
.logo { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.logo-icon {
  width: 36px; height: 36px; background: var(--blue); color: #fff;
  border-radius: 8px; display: flex; align-items: center; justify-content: center;
  font-size: 20px; font-weight: 800;
}
.logo-text { font-size: 18px; font-weight: 700; color: var(--text); }
.nav-links { display: flex; align-items: center; gap: 24px; }
.nav-links a { font-size: 14px; color: var(--text-light); font-weight: 500; transition: color 0.2s; }
.nav-links a:hover, .nav-links a.active { color: var(--blue); }
.btn-nav {
  padding: 8px 18px; background: var(--blue); color: #fff !important;
  border-radius: 8px; font-weight: 600 !important;
}
.btn-nav:hover { background: var(--blue-dark) !important; }

/* Hero */
.hero {
  padding: 140px 24px 80px; text-align: center; position: relative; overflow: hidden;
  background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 50%, #f0fdf4 100%);
}
.hero-content { position: relative; z-index: 1; max-width: 700px; margin: 0 auto; }
.hero-title { font-size: 44px; font-weight: 800; line-height: 1.2; margin-bottom: 16px; }
.hero-title .text-blue { color: var(--blue); }
.hero-subtitle { font-size: 17px; color: var(--text-light); line-height: 1.8; margin-bottom: 32px; }
.hero-actions { display: flex; gap: 12px; justify-content: center; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 12px 28px; border-radius: 8px; font-size: 15px; font-weight: 600;
  transition: all 0.2s; cursor: pointer; border: 2px solid transparent; text-decoration: none;
}
.btn-primary { background: var(--blue); color: #fff; border-color: var(--blue); }
.btn-primary:hover { background: var(--blue-dark); border-color: var(--blue-dark); transform: translateY(-1px); }
.btn-outline { background: transparent; color: var(--blue); border-color: var(--blue); }
.btn-outline:hover { background: var(--blue-bg); transform: translateY(-1px); }

/* Sections */
.section { padding: 80px 0; }
.section-blue { background: var(--blue); color: #fff; }
.section-title { font-size: 28px; font-weight: 700; text-align: center; margin-bottom: 8px; }
.section-title.light { color: #fff; }
.section-desc { text-align: center; color: var(--text-light); margin-bottom: 40px; font-size: 15px; }
.section-blue .section-desc { color: rgba(255,255,255,0.8); }

/* Services */
.services-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.service-card {
  padding: 28px; border: 1px solid var(--border); border-radius: var(--radius);
  transition: all 0.3s;
}
.service-card:hover {
  border-color: var(--blue); box-shadow: 0 4px 20px rgba(37,99,235,0.1); transform: translateY(-2px);
}
.service-icon { font-size: 36px; margin-bottom: 12px; }
.service-card h3 { font-size: 17px; font-weight: 600; margin-bottom: 8px; }
.service-card p { font-size: 14px; color: var(--text-light); line-height: 1.7; }
.service-link { display: inline-block; margin-top: 12px; font-size: 13px; font-weight: 500; }

/* Advantages */
.advantages-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; margin-top: 40px; }
.advantage-item { text-align: center; padding: 24px; }
.advantage-num { font-size: 40px; font-weight: 800; margin-bottom: 8px; }
.advantage-item p { font-size: 15px; opacity: 0.9; }

/* Steps */
.steps { display: flex; align-items: center; justify-content: center; gap: 16px; margin-top: 40px; flex-wrap: wrap; }
.step { text-align: center; padding: 24px; min-width: 160px; }
.step-num {
  width: 48px; height: 48px; background: var(--blue); color: #fff; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 20px; font-weight: 700; margin: 0 auto 12px;
}
.step h4 { font-size: 15px; font-weight: 600; margin-bottom: 4px; }
.step p { font-size: 13px; color: var(--text-light); }
.step-arrow { font-size: 24px; color: var(--blue); font-weight: 300; }

/* CTA */
.cta-section { text-align: center; background: var(--bg-alt); }
.cta-section h2 { font-size: 28px; font-weight: 700; }
.cta-section p { color: var(--text-light); margin-top: 8px; font-size: 15px; }

/* Footer */
.footer { background: #1e293b; color: #fff; padding: 60px 0 0; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 2fr; gap: 32px; }
.footer h4 { font-size: 14px; font-weight: 600; margin-bottom: 16px; text-transform: uppercase; letter-spacing: 1px; }
.footer a { display: block; color: #94a3b8; font-size: 13px; margin-bottom: 8px; transition: color 0.2s; }
.footer a:hover { color: #fff; }
.footer-bottom {
  border-top: 1px solid #334155; padding: 20px 0; margin-top: 40px;
  text-align: center; color: #64748b; font-size: 13px;
}

/* Responsive */
@media (max-width: 768px) {
  .hero-title { font-size: 30px; }
  .hero { padding: 100px 20px 60px; }
  .services-grid, .advantages-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .nav-links a:not(.btn-nav) { display: none; }
  .steps { flex-direction: column; }
  .step-arrow { transform: rotate(90deg); }
}
@media (max-width: 480px) {
  .services-grid, .advantages-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
}