:root {
  --sf-primary: #2563eb;
  --sf-secondary: #0f766e;
  --sf-bg: #ffffff;
  --sf-text: #0f172a;
  --sf-font: Inter, system-ui, sans-serif;
}
body { background: var(--sf-bg); color: var(--sf-text); font-family: var(--sf-font); margin: 0; }
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: #0f172a; background: #ffffff; }
img { max-width: 100%; height: auto; }
a { color: #2563eb; }
section { padding: 48px 20px; }
.container { max-width: 1100px; margin: 0 auto; }
.card-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
@media (max-width: 900px) {
  .card-grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  h1 { font-size: 2.25rem !important; }
  h2 { font-size: 1.75rem !important; }
  section { padding: 36px 16px; }
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: #142033;
  background: #ffffff;
  font-family: Inter, Arial, sans-serif;
}

img {
  max-width: 100%;
  height: auto;
}

a {
  color: #1d4ed8;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

section {
  padding: 48px 20px;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
}

.sf-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid #e8eef7;
}

.sf-header-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 16px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.sf-logo {
  font-size: 1.2rem;
  font-weight: 800;
  color: #142033;
  text-decoration: none;
}

.sf-logo:hover {
  text-decoration: none;
}

.sf-nav {
  display: flex;
  align-items: center;
  gap: 22px;
}

.sf-nav a {
  font-size: 0.95rem;
  font-weight: 600;
  color: #344054;
}

.sf-nav a:hover {
  color: #1d4ed8;
  text-decoration: none;
}

.sf-menu-toggle {
  display: none;
  border: 1px solid #dbe5f0;
  background: #ffffff;
  color: #142033;
  border-radius: 10px;
  padding: 8px 12px;
  font-size: 1rem;
  cursor: pointer;
}

.sf-footer {
  margin-top: 48px;
  border-top: 1px solid #e8eef7;
  background: #f8fbff;
}

.sf-footer-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 36px 20px 24px;
}

.sf-footer-brand strong {
  display: inline-block;
  margin-bottom: 10px;
  font-size: 1.05rem;
  color: #142033;
}

.sf-footer-brand p {
  margin: 0 0 18px;
  max-width: 680px;
  color: #667085;
  line-height: 1.7;
}

.sf-footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px 22px;
  margin-bottom: 20px;
}

.sf-footer-links a {
  font-size: 0.95rem;
  font-weight: 600;
  color: #344054;
}

.sf-footer-bottom {
  padding-top: 18px;
  border-top: 1px solid #e3ebf5;
}

.sf-footer-bottom p {
  margin: 0;
  font-size: 0.9rem;
  color: #667085;
}

@media (max-width: 768px) {
  section {
    padding: 32px 16px;
  }

  .sf-menu-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .sf-nav {
    display: none;
    position: absolute;
    top: 68px;
    left: 16px;
    right: 16px;
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
    padding: 16px;
    background: #ffffff;
    border: 1px solid #e8eef7;
    border-radius: 16px;
    box-shadow: 0 18px 40px rgba(15, 23, 42, 0.08);
  }

  body.sf-nav-open .sf-nav {
    display: flex;
  }
}