html {
  box-sizing: border-box;
}

body,
body::before,
body::after,
div,
section,
article,
header,
footer,
main,
nav,
aside,
h1,
h2,
h3,
p,
a,
ul,
ol,
li {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background: #f8fafc;
  color: #111827;
  line-height: 1.75;
}

a {
  color: #1f5eff;
  text-decoration: none;
  font-weight: 700;
}

a:hover {
  color: #1746c7;
  text-decoration: underline;
}

.container {
  width: 92%;
  max-width: 1120px;
  margin-left: auto;
  margin-right: auto;
}

header {
  background: #ffffff;
  border-bottom: 1px solid #e5e7eb;
  position: sticky;
  top: 0;
  z-index: 10;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 0;
}

.logo {
  font-size: 22px;
  font-weight: 800;
  color: #1f5eff;
}

.nav-links {
  display: flex;
  gap: 22px;
}

.nav-links a {
  color: #6b7280;
  text-decoration: none;
  font-weight: 600;
}

.nav-links a:hover {
  color: #1f5eff;
}

.card {
  background: #ffffff;
  border: 1px solid #e5e7eb;
  border-radius: 22px;
  padding: 28px;
  box-shadow: 0 12px 30px rgba(15, 23, 42, 0.04);
}

.module-link {
  display: inline-block;
  margin-top: 18px;
  color: #1f5eff;
  font-weight: 700;
  font-size: 14px;
  transition: all 0.2s ease;
}

.module-link:hover {
  color: #1746c7;
  transform: translateX(2px);
}

.hero {
  padding: 90px 0 70px;
  text-align: center;
  background: linear-gradient(180deg, #ffffff 0%, #eef4ff 100%);
}

.hero h1 {
  max-width: 900px;
  margin: auto;
  font-size: 56px;
  line-height: 1.08;
  letter-spacing: -1.5px;
}

.hero p {
  max-width: 760px;
  margin: 24px auto 0;
  color: #6b7280;
  font-size: 19px;
}

.hero-actions {
  margin-top: 34px;
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

.button {
  display: inline-block;
  padding: 13px 22px;
  border-radius: 10px;
  font-weight: 700;
  border: 1px solid #e5e7eb;
}

.button.primary {
  background: #1f5eff;
  color: #ffffff;
  border-color: #1f5eff;
}

section {
  padding: 70px 0;
}

.section-title {
  text-align: center;
  margin-bottom: 42px;
}

.section-title h2 {
  font-size: 36px;
  letter-spacing: -0.8px;
}

.section-title p {
  color: #6b7280;
  margin-top: 12px;
  font-size: 17px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.card h3 {
  font-size: 20px;
  margin-bottom: 10px;
}

.card p {
  color: #6b7280;
  font-size: 15px;
}

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

.split h2 {
  font-size: 38px;
  line-height: 1.15;
  margin-bottom: 18px;
}

.split p,
.split li {
  color: #6b7280;
}

ul {
  margin-top: 18px;
  padding-left: 20px;
}

.cta {
  background: #111827;
  color: #ffffff;
  text-align: center;
  border-radius: 26px;
  padding: 54px 28px;
}

.cta p {
  color: #d1d5db;
  max-width: 720px;
  margin: 14px auto 0;
}

footer {
  border-top: 1px solid #e5e7eb;
  padding: 30px 0;
  color: #6b7280;
  font-size: 14px;
  background: #ffffff;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

.blog-hero {
  background: linear-gradient(180deg, #ffffff 0%, #eef4ff 100%);
  padding: 70px 0 50px;
  border-bottom: 1px solid #e5e7eb;
}

.blog-hero-inner,
.hero-inner {
  max-width: 900px;
  margin: auto;
  text-align: center;
}

.eyebrow {
  display: inline-block;
  color: #1f5eff;
  background: #ffffff;
  border: 1px solid #e5e7eb;
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 20px;
}

.blog-summary,
.summary {
  color: #6b7280;
  font-size: 19px;
  max-width: 780px;
  margin: 0 auto 22px;
}

.meta {
  color: #6b7280;
  font-size: 14px;
}

main {
  padding: 60px 0;
}

.article-layout,
.layout {
  display: grid;
  grid-template-columns: 760px 280px;
  gap: 42px;
  align-items: start;
}

article {
  background: #ffffff;
  border: 1px solid #e5e7eb;
  border-radius: 22px;
  padding: 42px;
  box-shadow: 0 12px 30px rgba(15, 23, 42, 0.04);
}

article h2 {
  font-size: 30px;
  line-height: 1.25;
  letter-spacing: -0.5px;
  margin: 42px 0 16px;
}

article h3 {
  font-size: 22px;
  margin: 28px 0 10px;
}

article p {
  color: #374151;
  margin-bottom: 18px;
  font-size: 17px;
}

article ul,
article ol {
  padding-left: 24px;
  margin: 14px 0 24px;
  color: #374151;
}

article li {
  margin-bottom: 10px;
}

.stat-box,
.highlight-box {
  background: #eef4ff;
  border: 1px solid #dbe7ff;
  border-left: 5px solid #1f5eff;
  padding: 24px;
  border-radius: 16px;
  margin: 32px 0;
}

.stat-box strong,
.highlight-box strong {
  display: block;
  color: #111827;
  font-size: 20px;
  margin-bottom: 10px;
}

.impact-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin: 26px 0;
}

.impact-card {
  background: #eef4ff;
  border: 1px solid #dbe7ff;
  border-radius: 16px;
  padding: 22px;
  text-align: center;
}

.impact-card strong {
  display: block;
  color: #1f5eff;
  font-size: 30px;
  line-height: 1;
  margin-bottom: 8px;
}

.sidebar {
  position: sticky;
  top: 96px;
  background: #ffffff;
  border: 1px solid #e5e7eb;
  border-radius: 18px;
  padding: 24px;
  box-shadow: 0 12px 30px rgba(15, 23, 42, 0.04);
}

.sidebar h3 {
  font-size: 18px;
  margin-bottom: 14px;
}

.sidebar a {
  display: block;
  padding: 9px 0;
  color: #6b7280;
  font-size: 14px;
  font-weight: 600;
  border-bottom: 1px solid #e5e7eb;
}

.sidebar a:hover {
  color: #1f5eff;
  text-decoration: none;
}

.content-link {
  color: #1f5eff;
  font-weight: 700;
  border-bottom: 2px solid rgba(31, 94, 255, 0.25);
}

.content-link:hover {
  border-color: #1f5eff;
  text-decoration: none;
}

.cta-blog {
  margin-top: 48px;
  padding: 36px;
  background: #111827;
  color: #ffffff;
  border-radius: 22px;
  text-align: center;
}

.cta-blog h2 {
  color: #ffffff;
  margin: 0 0 14px;
  font-size: 30px;
}

.cta-blog p {
  color: #d1d5db;
  max-width: 680px;
  margin: auto;
}

.cta-button {
  display: inline-block;
  margin-top: 22px;
  background: #1f5eff;
  color: #ffffff;
  padding: 13px 24px;
  border-radius: 10px;
  font-weight: 800;
}

.cta-button:hover {
  background: #1746c7;
  color: #ffffff;
  text-decoration: none;
}

@media (max-width: 920px) {
  .article-layout,
  .layout {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
  }
}

@media (max-width: 820px) {
  .nav {
    align-items: flex-start;
    gap: 14px;
    flex-direction: column;
  }

  .nav-links {
    flex-wrap: wrap;
  }

  .grid,
  .split {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 60px;
  }

  .hero h1,
  h1 {
    font-size: 38px;
  }

  article {
    padding: 28px;
  }

  .impact-grid {
    grid-template-columns: 1fr;
  }
}