* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* .mb-1 {
    margin-bottom: 0.5rem;
}

.mb-2 {
    margin-bottom: 1rem;
}

.mb-3 {
    margin-bottom: 1.5rem;
}

.mb-4 {
    margin-bottom: 2rem;
} */

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  /* background: #f8faff; */
  background: radial-gradient(circle at top, #eef3ff 0%, #f8faff 60%);
  color: #1f2937;
}

main {
  flex: 1;
}


a {
  text-decoration: none;
  color: inherit;
}

.container {
  max-width: 1200px;
  margin: auto;
  padding: 0 20px;
}

/* HEADER */
.site-header {
  /* background: #fff; */
  background: radial-gradient(circle at top, #eef3ff 0%, #f8faff 60%);
  border-bottom: 1px solid #e5e7eb;
}

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

.logo {
  font-weight: 700;
  font-size: 20px;
  color: #2563eb;
}

.site-header nav a {
  margin-left: 20px;
  color: #374151;
  font-size: 14px;
}

/* HERO */
.hero {
  /* padding: 80px 0; */
  padding-top: 80px;
  padding-bottom: 30px;
  text-align: center;
}

.hero h1 {
  font-size: 38px;
  margin-bottom: 16px;
}

.hero-text {
  max-width: 720px;
  margin: auto;
  font-size: 18px;
  color: #4b5563;
}

@media (max-width: 640px) {
  .hero h1 {
    font-size: 28px;
  }

  .hero-text {
    font-size: 16px;
  }
}


/* TOOLS */
.tools {
  /* padding: 60px 0; */
  padding: 30px 0;
}

.tools h2 {
  text-align: center;
  margin-bottom: 30px;
}

.tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
}

.tool-card {
  background: #fff;
  padding: 22px;
  border-radius: 14px;
  text-align: center;
  box-shadow: 0 10px 25px rgba(0,0,0,0.08);
  font-weight: 600;
}

/* ADS */
.ad-section {
  /* padding: 40px 0; */
  padding: 40px 20px;
  max-width: 1200px;
  margin: auto;
}

.ad-box {
  background: #fff;
  border-radius: 12px;
  padding: 30px;
  text-align: center;
  color: #9ca3af;
  box-shadow: 0 8px 22px rgba(0,0,0,0.06);
}

/* SEO */
.seo {
  padding: 30px 0;
}

.seo ul, ol {
  max-width: 600px;
  /* margin: auto; */
  padding-left: 20px;
}

/* FOOTER */
.site-footer {
  margin-top: 40px;  
  border-top: 1px solid #e5e7eb;
  /* background: #fff; */
  background: radial-gradient(circle at top, #eef3ff 0%, #f8faff 60%);
  padding: 30px 0;
  text-align: center;
  font-size: 14px;
  color: #6b7280;
}

.site-footer nav a {
  margin: 0 10px;
}

@media (max-width: 640px) {
  .header-flex {
    /* flex-wrap: wrap; */
    height: auto;
    padding: 10px 0;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 10px;
  }

  .site-header nav {
    width: 100%;
    display: flex;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
    margin-top: 6px;
  }

  .site-header nav a {
    font-size: 13px;
  }
}