:root {
  --color-bg: #f7f8fb;
  --color-surface: #ffffff;
  --color-border: #e2e6f0;
  --color-primary: #2a5caa;
  --color-primary-soft: #e5efff;
  --color-accent: #6fa8ff;
  --color-text-main: #111111;
  --color-text-subtle: #444444;
}

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

body {
  margin: 0;
  font-family: ui-sans-serif, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  line-height: 1.6;
  color: var(--color-text-main);
  background-color: var(--color-bg);
}

a {
  color: inherit;
}

.page-wrap {
  max-width: 980px;
  margin: 0 auto;
  padding: 26px 20px 30px;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-logo {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  object-fit: contain;
  background: radial-gradient(circle at 30% 30%, #e9f2ff 0%, #cfe0ff 40%, #b6d0ff 100%);
  border: 1px solid #d9e6ff;
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-title {
  font-weight: 800;
  letter-spacing: -0.01em;
  font-size: 18px;
}

.brand-subtitle {
  font-size: 13px;
  color: var(--color-text-subtle);
}

.nav {
  display: flex;
  gap: 8px;
}

.nav-link {
  text-decoration: none;
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-size: 14px;
}

.nav-link:hover {
  border-color: var(--color-border);
  background-color: #f4f6fb;
}

.hero {
  padding: 10px 0 8px;
}

.hero-title {
  font-size: 34px;
  margin: 0 0 10px;
  letter-spacing: -0.02em;
}

.hero-subtitle {
  margin: 0 0 18px;
  max-width: 65ch;
  color: var(--color-text-subtle);
}

.hero-cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.btn {
  display: inline-block;
  text-decoration: none;
  font-weight: 600;
  padding: 10px 14px;
  border-radius: 999px;
  border: 1px solid var(--color-border);
  background-color: var(--color-surface);
  font-size: 14px;
}

.btn-primary {
  border-color: var(--color-primary-soft);
  background: linear-gradient(135deg, var(--color-primary-soft), #f5f8ff);
  color: var(--color-primary);
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin: 22px 0 10px;
}

.card {
  background-color: var(--color-surface);
  border-radius: 16px;
  border: 1px solid var(--color-border);
  padding: 16px;
  box-shadow: 0 8px 20px rgba(12, 33, 86, 0.03);
}

.card-title {
  font-size: 16px;
  margin: 0 0 6px;
}

.card-body {
  margin: 0;
  color: var(--color-text-subtle);
}

.note {
  margin-top: 22px;
  padding: 14px 16px;
  border-radius: 16px;
  background-color: #f1f4ff;
  border: 1px solid var(--color-border);
  color: var(--color-text-main);
  font-size: 14px;
}

.page-title {
  font-size: 26px;
  margin: 0 0 6px;
}

.page-subtitle {
  margin: 0 0 18px;
  color: var(--color-text-subtle);
}

.box {
  background-color: var(--color-surface);
  border-radius: 16px;
  border: 1px solid var(--color-border);
  padding: 16px 18px;
  margin: 14px 0;
}

.box h2 {
  font-size: 16px;
  margin: 0 0 6px;
}

.box p {
  margin: 8px 0 0;
}

.box ul {
  margin: 8px 0 0 20px;
}

.site-footer {
  margin-top: 26px;
  padding-top: 16px;
  border-top: 1px solid var(--color-border);
  color: #666666;
  font-size: 13px;
}

@media (max-width: 860px) {
  .site-header {
    flex-direction: column;
    align-items: flex-start;
  }

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

  .hero-title {
    font-size: 28px;
  }
}