:root {
  color-scheme: light;
  --color-bg: #f5f8ff;
  --color-surface: #ffffff;
  --color-primary: #1f6fe5;
  --color-primary-dark: #195bc0;
  --color-accent: #2d9bf3;
  --color-text: #0f172a;
  --color-muted: #4f5d75;
  --max-width: 1040px;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 10px;
  --shadow-lg: 0 30px 60px rgba(17, 38, 85, 0.18);
  --shadow-md: 0 18px 30px rgba(15, 34, 68, 0.16);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: 'Noto Sans JP', 'Hiragino Sans', 'Yu Gothic', 'Segoe UI', sans-serif;
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.7;
}

a {
  color: var(--color-primary);
  text-decoration: none;
}

a:hover,
a:focus {
  text-decoration: underline;
}

.hero {
  position: relative;
  padding: 120px 24px 96px;
  overflow: hidden;
  background: radial-gradient(100% 140% at 0% 0%, rgba(90, 167, 255, 0.28) 0%, transparent 55%),
    linear-gradient(135deg, #0f52ba 0%, #1f6fe5 40%, #53a2ff 100%);
  color: #f8fbff;
}

.hero__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  position: relative;
  z-index: 2;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  padding: 6px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.18);
  border: 1px solid rgba(255, 255, 255, 0.35);
  font-size: 14px;
  letter-spacing: 0.04em;
}

.hero__title {
  font-size: clamp(32px, 6vw, 56px);
  margin: 18px 0 16px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.hero__description {
  font-size: 18px;
  max-width: 640px;
  margin: 0 0 32px;
  color: rgba(248, 251, 255, 0.9);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 26px;
  border-radius: 999px;
  font-size: 16px;
  font-weight: 600;
  border: 1px solid transparent;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.button--primary {
  background: #ffffff;
  color: var(--color-primary);
  box-shadow: 0 18px 30px rgba(10, 45, 112, 0.25);
}

.button--primary:hover,
.button--primary:focus {
  transform: translateY(-2px);
  box-shadow: 0 24px 36px rgba(10, 45, 112, 0.28);
}

.button--ghost {
  color: #f8fbff;
  border-color: rgba(248, 251, 255, 0.55);
  background: transparent;
}

.button--ghost:hover,
.button--ghost:focus {
  background: rgba(248, 251, 255, 0.14);
  transform: translateY(-2px);
}

.hero__shape {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(120% 180% at 80% 20%, rgba(15, 82, 186, 0.4) 0%, transparent 55%),
    radial-gradient(120% 120% at 110% 60%, rgba(83, 162, 255, 0.45) 0%, transparent 50%),
    linear-gradient(160deg, rgba(255, 255, 255, 0.08) 0%, rgba(255, 255, 255, 0) 40%);
  opacity: 0.85;
  z-index: 1;
  transform: translateZ(0);
}

.section {
  padding: 96px 24px;
  background: var(--color-bg);
}

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

.section__inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.section__inner--narrow {
  max-width: 760px;
}

.section__title {
  margin: 0 0 48px;
  font-size: clamp(28px, 4vw, 40px);
  text-align: center;
  letter-spacing: -0.01em;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
}

.feature-card {
  padding: 32px 28px;
  border-radius: var(--radius-lg);
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.96), rgba(236, 244, 255, 0.92));
  box-shadow: var(--shadow-md);
  border: 1px solid rgba(210, 227, 255, 0.65);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.feature-card__title {
  margin: 0;
  font-size: 20px;
  color: var(--color-primary-dark);
}

.feature-card__body {
  margin: 0;
  color: var(--color-muted);
}

.steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 24px;
}

.steps__item {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 20px;
  padding: 24px;
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  box-shadow: 0 12px 24px rgba(22, 55, 107, 0.12);
}

.steps__number {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 22px;
  font-weight: 600;
  box-shadow: 0 12px 20px rgba(31, 111, 229, 0.35);
}

.steps__item h3 {
  margin: 0 0 8px;
  font-size: 20px;
}

.steps__item p {
  margin: 0;
  color: var(--color-muted);
}

.faq {
  display: grid;
  gap: 20px;
}

.faq__item {
  padding: 28px;
  border-radius: var(--radius-md);
  background: var(--color-surface);
  border: 1px solid rgba(210, 227, 255, 0.7);
  box-shadow: 0 12px 22px rgba(17, 44, 95, 0.12);
}

.faq__question {
  margin: 0 0 12px;
  font-size: 20px;
  color: var(--color-primary-dark);
}

.faq__answer {
  margin: 0;
  color: var(--color-muted);
}

.cta {
  padding: 48px;
  border-radius: var(--radius-lg);
  background: linear-gradient(140deg, #0f4fb3, #1f6fe5 55%, #53a2ff 100%);
  color: #f5f9ff;
  display: grid;
  gap: 22px;
  justify-items: start;
  box-shadow: var(--shadow-lg);
}

.cta__title {
  margin: 0;
  font-size: clamp(28px, 4vw, 38px);
}

.cta__body {
  margin: 0;
  max-width: 540px;
  color: rgba(245, 249, 255, 0.92);
}

.footer {
  background: #0e1d3a;
  color: rgba(255, 255, 255, 0.7);
  padding: 32px 24px;
}

.footer__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  align-items: center;
  justify-content: space-between;
}

.footer a {
  color: rgba(255, 255, 255, 0.85);
}

.footer span {
  margin: 0 8px;
}

@media (max-width: 720px) {
  .hero {
    padding: 96px 20px 72px;
  }

  .hero__description {
    font-size: 16px;
  }

  .steps__item {
    grid-template-columns: 1fr;
    text-align: left;
  }

  .steps__number {
    margin-bottom: 12px;
  }

  .cta {
    padding: 36px;
  }

  .footer__inner {
    flex-direction: column;
    align-items: flex-start;
  }
}