:root {
  color-scheme: light;
  --bg: #f7f8fb;
  --card: #ffffff;
  --text: #1a1c20;
  --muted: #5f6b7a;
  --primary: #4f46e5;
  --primary-dark: #4338ca;
  --border: #e5e7eb;
  --shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
  --radius: 16px;
  --max: 1100px;
  font-family: "Inter", "Noto Sans JP", "Noto Sans", system-ui, -apple-system, sans-serif;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
}

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

a:hover {
  color: var(--primary-dark);
}

header {
  background: #fff;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}

.nav {
  max-width: var(--max);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  gap: 16px;
}

.logo {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text);
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.logo img {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  box-shadow: 0 6px 16px rgba(15, 23, 42, 0.12);
}

.nav-links {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  font-size: 0.95rem;
}

.lang-switch {
  display: flex;
  gap: 10px;
  font-size: 0.9rem;
}

main {
  max-width: var(--max);
  margin: 0 auto;
  padding: 40px 20px 80px;
}

.hero {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 28px;
  align-items: center;
  margin-bottom: 40px;
}

.hero-card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
}

.hero h1 {
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  margin-bottom: 12px;
}

.hero p {
  color: var(--muted);
}

.badge {
  display: inline-block;
  background: #eef2ff;
  color: #4338ca;
  font-weight: 600;
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 0.85rem;
  margin-bottom: 12px;
}

.button {
  display: inline-block;
  background: var(--primary);
  color: #fff;
  padding: 10px 18px;
  border-radius: 10px;
  margin-top: 18px;
}

.button.secondary {
  background: #fff;
  color: var(--primary);
  border: 1px solid var(--border);
  margin-left: 8px;
}

.section {
  margin-top: 36px;
}

.section h2 {
  font-size: 1.4rem;
  margin-bottom: 12px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
}

.card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 18px;
  border: 1px solid var(--border);
}

.card h3 {
  margin-bottom: 8px;
}

.list {
  list-style: none;
  display: grid;
  gap: 10px;
}

.notice {
  background: #fff7ed;
  border: 1px solid #fed7aa;
  color: #9a3412;
  padding: 14px 16px;
  border-radius: 12px;
  margin-top: 16px;
}

footer {
  border-top: 1px solid var(--border);
  background: #fff;
  padding: 24px 20px;
}

.footer-inner {
  max-width: var(--max);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-size: 0.9rem;
  color: var(--muted);
}

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

.table th,
.table td {
  text-align: left;
  padding: 10px 8px;
  border-bottom: 1px solid var(--border);
}

@media (max-width: 720px) {
  .nav {
    flex-direction: column;
    align-items: flex-start;
  }
  .nav-links {
    gap: 12px;
  }
}