:root {
  --color-bg: #FAF6EF;
  --color-surface: #FFFFFF;
  --color-ink: #23303B;
  --color-sub: #56616B;
  --color-line: #EAE3D7;
  --color-accent: #237A6B;
  --color-accent-dark: #1A5A4F;
  --color-accent-tint: #E3F1EC;
  --font-display: 'Zen Maru Gothic', 'Hiragino Maru Gothic ProN', sans-serif;
  --font-body: 'Hiragino Sans', 'Noto Sans JP', system-ui, sans-serif;
  --radius-card: 18px;
  --radius-btn: 14px;
}

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

body {
  margin: 0;
  padding: 0;
  font-family: var(--font-body);
  background-color: var(--color-bg);
  color: var(--color-ink);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.landing-page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.landing-container {
  width: 100%;
  max-width: 640px;
  margin: 0 auto;
  padding: 24px 16px 40px;
}

/* Header */
.landing-header {
  margin-bottom: 28px;
}

.landing-logo {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: inherit;
}

.landing-logo__icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background-color: var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.landing-logo__icon svg {
  width: 22px;
  height: 22px;
}

.landing-logo__text {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  color: var(--color-ink);
}

/* Hero Section */
.hero-title {
  font-family: var(--font-display);
  font-size: 28px;
  line-height: 1.35;
  font-weight: 700;
  margin: 0 0 16px;
  color: var(--color-ink);
  letter-spacing: -0.01em;
}

.hero-lead {
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-sub);
  margin: 0 0 28px;
}

/* Button */
.btn-primary {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  min-height: 56px;
  padding: 0 24px;
  background-color: var(--color-accent);
  color: #FFFFFF;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  border-radius: var(--radius-btn);
  text-decoration: none;
  transition: background-color 0.15s ease;
  text-align: center;
}

@media (hover: hover) {
  .btn-primary:hover {
    background-color: var(--color-accent-dark);
  }
}

.btn-primary:active {
  background-color: var(--color-accent-dark);
}

.hero-cta {
  margin-bottom: 40px;
}

.cta-repeat {
  margin-top: 36px;
  margin-bottom: 48px;
}

/* Features */
.features-section {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 40px;
}

.feature-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-card);
  padding: 22px 20px;
}

.feature-card__title {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  margin: 0 0 8px;
  color: var(--color-ink);
}

.feature-card__body {
  font-size: 15px;
  line-height: 1.65;
  color: var(--color-sub);
  margin: 0;
}

.feature-card--highlight {
  background-color: var(--color-accent-tint);
  border-color: rgba(35, 122, 107, 0.25);
}

.feature-card--highlight .feature-card__title {
  color: var(--color-accent);
}

.feature-card--highlight .feature-card__body {
  color: var(--color-ink);
}

.highlight-list {
  margin: 12px 0 0;
  padding-left: 20px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--color-ink);
}

.highlight-list li {
  margin-bottom: 6px;
}

.highlight-list li:last-child {
  margin-bottom: 0;
}

/* Parent Card */
.parent-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-card);
  padding: 24px 20px;
  margin-bottom: 32px;
}

.parent-card__title {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  margin: 0 0 16px;
  color: var(--color-ink);
}

.parent-info-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin: 0 0 18px;
}

.parent-info-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.parent-info-label {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-ink);
}

.parent-info-desc {
  font-size: 14px;
  line-height: 1.6;
  color: var(--color-sub);
  margin: 0;
}

.parent-card__footer {
  font-size: 13px;
  color: var(--color-sub);
  margin: 0;
  padding-top: 14px;
  border-top: 1px solid var(--color-line);
}

.parent-card__footer a {
  color: var(--color-accent);
  text-decoration: underline;
}

/* Legal Pages */
.legal-title {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 700;
  margin: 0 0 20px;
  color: var(--color-ink);
}

.legal-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-card);
  padding: 24px 20px;
  min-height: 160px;
}

.legal-content {
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-ink);
  margin: 0;
}

.legal-lead {
  font-size: 15px;
  line-height: 1.8;
  color: var(--color-ink);
  margin: 0 0 24px;
}

.legal-section-title {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.4;
  margin: 32px 0 12px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--color-line);
  color: var(--color-ink);
}

.legal-section-body {
  font-size: 15px;
  line-height: 1.8;
  color: var(--color-ink);
  margin: 0 0 16px;
}

.legal-section-body strong,
.legal-lead strong,
.legal-ordered-list strong {
  font-weight: 700;
}

.legal-ordered-list {
  margin: 0 0 16px;
  padding-left: 22px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--color-ink);
}

.legal-ordered-list li {
  margin-bottom: 8px;
}

.legal-ordered-list li:last-child {
  margin-bottom: 0;
}

.legal-table-wrap {
  width: 100%;
  overflow-x: auto;
  margin: 0 0 16px;
  -webkit-overflow-scrolling: touch;
}

.legal-table {
  width: 100%;
  min-width: 480px;
  border-collapse: collapse;
  font-size: 14px;
  line-height: 1.6;
  text-align: left;
}

.legal-table th,
.legal-table td {
  padding: 10px 12px;
  border: 1px solid var(--color-line);
  vertical-align: top;
}

.legal-table th {
  background-color: var(--color-bg);
  font-weight: 700;
  color: var(--color-ink);
  white-space: nowrap;
}

.legal-table td {
  color: var(--color-ink);
}

.legal-card a {
  color: var(--color-accent);
  text-decoration: underline;
}

@media (hover: hover) {
  .legal-card a:hover {
    color: var(--color-accent-dark);
  }
}

.legal-meta {
  margin-top: 36px;
  padding-top: 16px;
  border-top: 1px solid var(--color-line);
  font-size: 13px;
  line-height: 1.6;
  color: var(--color-sub);
}

.legal-meta p {
  margin: 0 0 4px;
}

.legal-meta p:last-child {
  margin: 0;
}

.legal-back-nav {
  margin-top: 24px;
}

.legal-back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  color: var(--color-accent);
  text-decoration: none;
}

@media (hover: hover) {
  .legal-back-link:hover {
    text-decoration: underline;
  }
}

/* Footer */
.landing-footer {
  border-top: 1px solid var(--color-line);
  padding: 32px 16px;
  margin-top: auto;
  text-align: center;
}

.landing-footer__links {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 16px 24px;
  list-style: none;
  padding: 0;
  margin: 0 0 16px;
}

.landing-footer__link {
  font-size: 14px;
  color: var(--color-sub);
  text-decoration: none;
}

@media (hover: hover) {
  .landing-footer__link:hover {
    color: var(--color-ink);
    text-decoration: underline;
  }
}

.landing-footer__operator {
  font-size: 13px;
  color: var(--color-sub);
  margin: 0 0 8px;
}

.landing-footer__copy {
  font-size: 13px;
  color: var(--color-sub);
  margin: 0;
}

/* Tablet & Desktop */
@media (min-width: 600px) {
  .hero-title {
    font-size: 32px;
  }
  .feature-card {
    padding: 26px 24px;
  }
  .parent-card {
    padding: 28px 24px;
  }
  .legal-card {
    padding: 32px 28px;
  }
}