:root {
  --color-indigo: #2d2970;
  --color-indigo-dark: #221f58;
  --color-lavender: #7d79e8;
  --color-white: #ffffff;
  --color-ink: #202033;
  --color-muted: #6d6a85;
  --color-line: #e6e4f0;
  --color-surface: #f7f7fb;
  --content-width: 1120px;
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Noto Sans JP",
    "Hiragino Sans", "Yu Gothic", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--color-white);
  color: var(--color-ink);
  font-family: var(--font-sans);
  letter-spacing: 0;
}

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

.site-header {
  align-items: center;
  background: var(--color-indigo);
  color: var(--color-white);
  display: flex;
  gap: 32px;
  justify-content: space-between;
  padding: 32px max(24px, calc((100vw - var(--content-width)) / 2));
  position: relative;
  z-index: 2;
}

.brand,
.site-nav,
.header-cta,
.primary-cta {
  align-items: center;
  display: flex;
}

.brand {
  flex: 0 0 auto;
  font-size: 26px;
  font-weight: 800;
  gap: 12px;
}

.brand-mark {
  border: 3px solid currentColor;
  border-radius: 45% 55% 50% 40%;
  display: inline-block;
  height: 42px;
  transform: rotate(-12deg);
  width: 42px;
}

.site-nav {
  flex: 1;
  gap: 34px;
  justify-content: center;
}

.site-nav a {
  font-size: 14px;
  font-weight: 700;
}

.header-cta,
.primary-cta {
  background: var(--color-white);
  border-radius: 8px;
  color: var(--color-indigo);
  font-weight: 800;
  gap: 18px;
  justify-content: space-between;
}

.header-cta {
  min-width: 156px;
  padding: 15px 16px 15px 20px;
}

.header-cta span,
.primary-cta span {
  align-items: center;
  background: var(--color-indigo);
  border-radius: 50%;
  color: var(--color-white);
  display: inline-flex;
  height: 22px;
  justify-content: center;
  width: 22px;
}

.hero {
  background: var(--color-indigo);
  color: var(--color-white);
  min-height: calc(100vh - 168px);
  overflow: hidden;
  position: relative;
}

.hero-inner {
  margin: 0 auto;
  max-width: var(--content-width);
  padding: 120px 24px 72px;
  position: relative;
  z-index: 1;
}

.hero h1 {
  font-size: clamp(42px, 7vw, 72px);
  line-height: 1.32;
  margin: 0 0 28px;
}

.hero p {
  font-size: 15px;
  line-height: 2;
  margin: 0 0 34px;
  max-width: 860px;
}

.primary-cta {
  min-height: 56px;
  padding: 0 18px 0 24px;
  width: min(280px, 100%);
}

.hero-shape {
  background: var(--color-lavender);
  border-radius: 999px;
  opacity: 0.72;
  position: absolute;
}

.hero-shape-left {
  height: 78px;
  left: -180px;
  top: 380px;
  transform: rotate(12deg);
  width: 360px;
}

.hero-shape-right {
  height: 62px;
  right: -80px;
  top: 96px;
  transform: rotate(15deg);
  width: 300px;
}

.section {
  padding: 92px 24px;
}

.section-light {
  background: var(--color-white);
}

.section-dark {
  background: var(--color-indigo);
  color: var(--color-white);
}

.section-inner {
  margin: 0 auto;
  max-width: var(--content-width);
}

.eyebrow {
  color: inherit;
  font-size: clamp(44px, 8vw, 72px);
  font-weight: 800;
  line-height: 1;
  margin: 0 0 10px;
}

.section-light .eyebrow,
.section-light h2 {
  color: var(--color-indigo);
}

.section h2 {
  font-size: 24px;
  margin: 0 0 36px;
}

.section-copy {
  font-size: 17px;
  line-height: 2;
  margin: 0;
  max-width: 880px;
}

.summary-grid {
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.summary-card {
  border: 1px solid var(--color-line);
  border-radius: 8px;
  padding: 28px;
}

.summary-card h3 {
  color: var(--color-indigo);
  font-size: 20px;
  margin: 0 0 14px;
}

.summary-card p {
  color: var(--color-muted);
  line-height: 1.8;
  margin: 0;
}

.news-list {
  border-top: 1px solid var(--color-line);
}

.news-item {
  align-items: baseline;
  border-bottom: 1px solid var(--color-line);
  display: grid;
  gap: 18px;
  grid-template-columns: 120px 60px 1fr;
  padding: 24px 0;
}

.news-item time {
  color: var(--color-indigo);
  font-weight: 500;
}

.news-item strong {
  color: #d32f6f;
  font-size: 13px;
}

.news-item p {
  line-height: 1.7;
  margin: 0;
}

.site-footer {
  align-items: center;
  background: var(--color-indigo-dark);
  color: var(--color-white);
  display: flex;
  justify-content: space-between;
  padding: 28px max(24px, calc((100vw - var(--content-width)) / 2));
}

@media (max-width: 820px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
    gap: 22px;
    padding-top: 24px;
  }

  .site-nav {
    flex-wrap: wrap;
    gap: 18px 24px;
    justify-content: flex-start;
  }

  .header-cta {
    width: min(100%, 260px);
  }

  .hero {
    min-height: auto;
  }

  .hero-inner {
    padding-top: 86px;
  }

  .hero-shape-left {
    left: -220px;
    top: 260px;
  }

  .hero-shape-right {
    right: -180px;
  }

  .summary-grid,
  .news-item {
    grid-template-columns: 1fr;
  }

  .news-item {
    gap: 8px;
  }
}

@media (max-width: 520px) {
  .hero h1 {
    font-size: 36px;
    line-height: 1.45;
  }

  .hero p {
    font-size: 14px;
  }
}