:root {
  color-scheme: light;
  --bg: #ffffff;
  --panel: #f6f8f7;
  --panel-strong: #eef3f0;
  --text: #202623;
  --muted: #5f6b65;
  --line: #dce4df;
  --accent: #287c64;
  --accent-strong: #1e604d;
  --accent-soft: #e6f3ee;
  --shadow: 0 12px 34px rgba(31, 56, 47, 0.08);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Sans",
    "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
}

a {
  color: var(--accent-strong);
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.22em;
}

.site-header {
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.92);
}

.header-inner,
.main,
.footer-inner {
  width: min(1040px, calc(100% - 40px));
  margin: 0 auto;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 72px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-weight: 700;
  text-decoration: none;
  white-space: nowrap;
}

.brand-mark {
  display: inline-grid;
  width: 32px;
  height: 32px;
  place-items: center;
  border-radius: 8px;
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-size: 17px;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 18px;
  color: var(--muted);
  font-size: 0.95rem;
}

.site-nav a {
  color: var(--muted);
  text-decoration: none;
}

.site-nav a:hover {
  color: var(--accent-strong);
}

.main {
  padding: 56px 0 72px;
}

.hero {
  display: grid;
  gap: 18px;
  margin-bottom: 46px;
}

.eyebrow {
  margin: 0;
  color: var(--accent-strong);
  font-size: 0.88rem;
  font-weight: 700;
  letter-spacing: 0;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 760px;
  margin-bottom: 0;
  font-size: clamp(2rem, 7vw, 3.35rem);
  line-height: 1.2;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(1.45rem, 4vw, 2rem);
  line-height: 1.35;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 8px;
  font-size: 1.1rem;
  letter-spacing: 0;
}

.lead {
  max-width: 720px;
  color: var(--muted);
  font-size: 1.08rem;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 6px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 16px;
  border: 1px solid var(--accent);
  border-radius: 8px;
  background: var(--accent);
  color: #ffffff;
  font-weight: 700;
  text-decoration: none;
}

.button.secondary {
  background: #ffffff;
  color: var(--accent-strong);
}

.section {
  margin-top: 46px;
}

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

.card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
  box-shadow: var(--shadow);
  padding: 22px;
}

.card p:last-child,
.notice p:last-child,
.policy-block p:last-child {
  margin-bottom: 0;
}

.app-card {
  display: grid;
  gap: 16px;
}

.app-icon {
  display: inline-grid;
  width: 48px;
  height: 48px;
  place-items: center;
  border-radius: 8px;
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-size: 24px;
  font-weight: 800;
}

.tag-list,
.plain-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 0;
  margin: 18px 0 0;
  list-style: none;
}

.tag-list li {
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent-strong);
  padding: 6px 12px;
  font-size: 0.92rem;
  font-weight: 700;
}

.plain-list {
  display: grid;
  gap: 10px;
  margin-top: 0;
}

.plain-list li {
  padding-left: 1.35rem;
  position: relative;
}

.plain-list li::before {
  content: "";
  position: absolute;
  top: 0.78em;
  left: 0;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
}

.notice,
.policy-block {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  padding: 22px;
}

.policy-block {
  margin-top: 18px;
}

.meta {
  color: var(--muted);
  font-size: 0.95rem;
}

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

.site-footer {
  border-top: 1px solid var(--line);
  background: var(--panel);
  color: var(--muted);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 28px 0;
  font-size: 0.9rem;
}

@media (max-width: 720px) {
  .header-inner {
    align-items: flex-start;
    flex-direction: column;
    gap: 10px;
    padding: 18px 0;
  }

  .site-nav {
    flex-wrap: wrap;
    gap: 12px 16px;
  }

  .main {
    padding-top: 40px;
  }

  .footer-inner {
    flex-direction: column;
  }
}