:root {
  color-scheme: light;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: linear-gradient(180deg, #f7f8fc 0%, #eef1fb 100%);
  color: #17203a;
  line-height: 1.6;
}

a {
  color: #283aa8;
}

header {
  max-width: 960px;
  margin: 0 auto;
  padding: 32px 24px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.logo {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: #17203a;
  text-decoration: none;
}

nav a {
  margin-left: 20px;
  text-decoration: none;
  font-weight: 500;
}

main {
  max-width: 960px;
  margin: 0 auto;
  padding: 48px 24px 72px;
}

.hero {
  padding: 48px 0 24px;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  line-height: 1.1;
  margin: 0 0 16px;
}

.hero p {
  font-size: 1.125rem;
  color: #5c667f;
  max-width: 640px;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
  margin-top: 40px;
}

.card {
  background: #fff;
  border: 1px solid #e3e7f3;
  border-radius: 16px;
  padding: 24px;
  box-shadow: 0 8px 24px rgba(23, 32, 58, 0.06);
}

.card h2 {
  margin: 0 0 8px;
  font-size: 1.125rem;
}

.card p {
  margin: 0;
  color: #5c667f;
}

.legal main {
  max-width: 860px;
}

.legal h1 {
  margin-bottom: 8px;
}

.legal h2 {
  margin-top: 32px;
  color: #283aa8;
}

.meta {
  color: #5c667f;
}

.notice {
  padding: 16px;
  border-left: 4px solid #4f46e5;
  background: #eef0ff;
  border-radius: 8px;
}

footer {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 24px 48px;
  color: #5c667f;
  font-size: 14px;
}