:root {
  --color-bg: #ffffff;
  --color-bg-alt: #f6f7f9;
  --color-text: #1c1f24;
  --color-text-muted: #5b6169;
  --color-border: #e3e5e8;
  --color-accent: #2f6fed;
  --color-accent-dark: #1f4fb0;
  --color-badge-live: #1e8e5a;
  --color-badge-soon: #b26a00;
  --max-width: 880px;
  --radius: 14px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic UI",
    "Segoe UI", Roboto, sans-serif;
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

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

a:hover {
  text-decoration: underline;
}

.wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

header.site-header {
  border-bottom: 1px solid var(--color-border);
  padding: 20px 0;
}

header.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.02em;
  color: var(--color-text);
}

nav.site-nav a {
  margin-left: 20px;
  color: var(--color-text-muted);
  font-size: 0.92rem;
}

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

.hero {
  padding: 72px 0 56px;
  border-bottom: 1px solid var(--color-border);
  background: linear-gradient(180deg, var(--color-bg-alt), var(--color-bg));
}

.hero h1 {
  font-size: 2.1rem;
  margin: 0 0 14px;
  letter-spacing: 0.01em;
}

.hero p {
  color: var(--color-text-muted);
  font-size: 1.02rem;
  max-width: 640px;
  margin: 0;
}

section {
  padding: 56px 0;
}

section + section {
  border-top: 1px solid var(--color-border);
}

section h2 {
  font-size: 1.4rem;
  margin: 0 0 28px;
}

.app-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

@media (min-width: 640px) {
  .app-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.app-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 24px;
  background: var(--color-bg);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.app-card h3 {
  margin: 0;
  font-size: 1.1rem;
}

.app-head {
  display: flex;
  align-items: center;
  gap: 12px;
}

.app-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  flex-shrink: 0;
  object-fit: cover;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
}

.badge {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 999px;
  width: fit-content;
}

.badge.live {
  background: rgba(30, 142, 90, 0.12);
  color: var(--color-badge-live);
}

.badge.soon {
  background: rgba(178, 106, 0, 0.12);
  color: var(--color-badge-soon);
}

.platform-status {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.app-card p {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.94rem;
}

.app-card .platforms {
  font-size: 0.82rem;
  color: var(--color-text-muted);
}

.app-links {
  margin-top: auto;
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 0.88rem;
}

.about-list {
  padding-left: 1.1em;
  color: var(--color-text-muted);
  margin: 0;
}

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

.contact-box {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 24px;
  background: var(--color-bg-alt);
}

.contact-box p {
  margin: 0 0 8px;
}

.contact-box .email {
  font-size: 1.05rem;
  font-weight: 600;
}

footer.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 28px 0 40px;
  color: var(--color-text-muted);
  font-size: 0.85rem;
}

footer.site-footer .wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 18px;
  justify-content: space-between;
  align-items: center;
}

footer.site-footer a {
  color: var(--color-text-muted);
}

.doc-page section {
  padding: 40px 0;
}

.doc-page h1 {
  font-size: 1.6rem;
  margin: 40px 0 8px;
}

.doc-page .lead {
  color: var(--color-text-muted);
  margin-bottom: 0;
}

table.tokushoho {
  width: 100%;
  border-collapse: collapse;
  margin-top: 8px;
}

table.tokushoho th,
table.tokushoho td {
  text-align: left;
  padding: 14px 12px;
  border-top: 1px solid var(--color-border);
  vertical-align: top;
}

table.tokushoho th {
  width: 32%;
  color: var(--color-text-muted);
  font-weight: 600;
  font-size: 0.92rem;
}

.placeholder {
  color: var(--color-badge-soon);
  background: rgba(178, 106, 0, 0.1);
  padding: 1px 6px;
  border-radius: 4px;
  font-size: 0.92em;
}

.back-link {
  display: inline-block;
  margin-top: 32px;
  font-size: 0.9rem;
}