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

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, "Noto Sans JP", sans-serif;
  color: #222;
  background-color: #f7f7f7;
}

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

.container {
  width: min(100% - 32px, 960px);
  margin: 0 auto;
}

.site-header {
  background-color: #ffffff;
  border-bottom: 1px solid #e5e5e5;
  position: sticky;
  top: 0;
  z-index: 10;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 0;
}

.logo {
  font-weight: 700;
  font-size: 1.1rem;
}

.nav a {
  margin-left: 16px;
  font-size: 0.95rem;
  padding: 6px 10px;
  border-radius: 999px;
}

.nav a:hover {
  background-color: #f0f0f0;
}

.nav a.active {
  background-color: #222;
  color: #fff;
}

.hero {
  padding: 56px 0 48px;
  background: radial-gradient(circle at top left, #ffffff, #f5f5f5);
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  gap: 32px;
  align-items: center;
}

.hero-text h1 {
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  margin-bottom: 16px;
}

.hero-text p {
  line-height: 1.7;
  margin-bottom: 16px;
}

.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 20px;
  border-radius: 999px;
  font-size: 0.95rem;
  border: 1px solid transparent;
  cursor: pointer;
}

.btn.primary {
  background-color: #222;
  color: #fff;
}

.btn.primary:hover {
  background-color: #000;
}

.btn.secondary {
  background-color: #ffffff;
  color: #222;
  border-color: #ddd;
}

.btn.secondary:hover {
  background-color: #f5f5f5;
}

.hero-image {
  margin: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-image img {
  max-width: 100%;
  height: auto;
  border-radius: 20px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.08);
  border: 1px solid #e5e5e5;
  background-color: #ffffff;
}

.section {
  padding: 48px 0;
  background-color: #ffffff;
}

.section:nth-of-type(even) {
  background-color: #f9f9f9;
}

.section-muted {
  background-color: #f1f1f1;
}

.section-title {
  font-size: 1.4rem;
  margin-bottom: 24px;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
}

.card {
  background-color: #ffffff;
  border-radius: 12px;
  padding: 18px 20px;
  border: 1px solid #e5e5e5;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.02);
}

.card h3 {
  margin-top: 0;
  font-size: 1.05rem;
  margin-bottom: 8px;
}

.card p {
  margin: 0;
  line-height: 1.7;
  font-size: 0.95rem;
}

.page-hero {
  padding: 40px 0 24px;
  background-color: #f1f1f1;
}

.page-hero h1 {
  margin: 0 0 8px;
  font-size: 1.6rem;
}

.page-hero p {
  margin: 0;
  color: #555;
}

.info-table {
  background-color: #ffffff;
  border-radius: 12px;
  border: 1px solid #e5e5e5;
  overflow: hidden;
}

.info-row {
  display: grid;
  grid-template-columns: 120px minmax(0, 1fr);
  border-bottom: 1px solid #f0f0f0;
}

.info-row:last-child {
  border-bottom: none;
}

.info-label {
  background-color: #fafafa;
  padding: 12px;
  font-weight: 600;
  font-size: 0.9rem;
}

.info-value {
  padding: 12px;
  font-size: 0.95rem;
  line-height: 1.7;
}

.service-list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
}

.service-item {
  background-color: #ffffff;
  border-radius: 12px;
  border: 1px solid #e5e5e5;
  padding: 18px 20px;
}

.service-item h3 {
  margin-top: 0;
  font-size: 1.1rem;
  margin-bottom: 8px;
}

.service-item p {
  font-size: 0.95rem;
  line-height: 1.7;
}

.service-item ul {
  padding-left: 20px;
  margin: 8px 0 0;
  font-size: 0.92rem;
}

.steps {
  margin: 0;
  padding-left: 20px;
  line-height: 1.9;
  font-size: 0.95rem;
}

.bullet-list {
  padding-left: 20px;
  margin: 0 0 12px;
  font-size: 0.95rem;
  line-height: 1.9;
}

.note {
  font-size: 0.9rem;
  color: #666;
  margin-top: 8px;
}

.site-footer {
  background-color: #ffffff;
  border-top: 1px solid #e5e5e5;
  padding: 16px 0;
  margin-top: 24px;
}

.footer-inner {
  text-align: center;
  font-size: 0.8rem;
  color: #666;
}

@media (max-width: 768px) {
  .hero-inner {
    grid-template-columns: minmax(0, 1fr);
  }

  .info-row {
    grid-template-columns: minmax(0, 1fr);
  }

  .info-label {
    border-bottom: 1px solid #f0f0f0;
  }

  .nav a {
    margin-left: 8px;
  }
}