:root {
  --color-primary: #ff7a59;
  --color-primary-dark: #e5603f;
  --color-text: #222;
  --color-muted: #666;
  --color-bg: #fff;
  --color-bg-alt: #fff6f2;
  --radius: 12px;
  --max-width: 1100px;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
}

a {
  color: var(--color-primary-dark);
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.95);
  border-bottom: 1px solid #eee;
  z-index: 10;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-primary);
  text-decoration: none;
}

.nav-menu {
  display: flex;
  gap: 1.5rem;
}

.nav-menu a {
  color: var(--color-text);
  text-decoration: none;
}

.nav-menu a:hover {
  color: var(--color-primary);
}

.nav-toggle {
  display: none;
  background: none;
  border: 0;
  font-size: 1.5rem;
  cursor: pointer;
}

/* Hero */
.hero {
  padding: 6rem 0;
  text-align: center;
  background: var(--color-bg-alt);
}

.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.5rem);
  margin: 0 0 1rem;
}

.lead {
  font-size: 1.2rem;
  color: var(--color-muted);
  margin: 0 0 2rem;
}

.btn {
  display: inline-block;
  padding: 0.8rem 1.8rem;
  border-radius: 999px;
  background: var(--color-primary);
  color: #fff;
  font-weight: 600;
  text-decoration: none;
}

.btn:hover {
  background: var(--color-primary-dark);
}

/* Sections */
.section {
  padding: 4rem 0;
}

.section-alt {
  background: var(--color-bg-alt);
}

.section h2 {
  text-align: center;
  margin-top: 0;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
}

.card {
  padding: 1.5rem;
  border: 1px solid #eee;
  border-radius: var(--radius);
}

.card h3 {
  margin-top: 0;
}

/* Footer */
.site-footer {
  padding: 2rem 0;
  text-align: center;
  color: var(--color-muted);
  border-top: 1px solid #eee;
}

/* Mobile */
@media (max-width: 640px) {
  .nav-toggle {
    display: block;
  }

  .nav-menu {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    background: #fff;
    border-bottom: 1px solid #eee;
  }

  .nav-menu.open {
    display: flex;
  }

  .nav-menu a {
    padding: 1rem 1.25rem;
  }
}