:root {
  --cream: #faf6ea;
  --cream-soft: #f2ecd8;
  --dark: #2b2f39;
  --dark-soft: #4a4f5c;
  --amber: #d99632;
  --amber-hover: #b97a1e;
  --border: rgba(43, 47, 57, 0.14);
  --radius: 14px;
  --max-width: 720px;
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Sans",
    "Hiragino Kaku Gothic ProN", "Yu Gothic", "Noto Sans JP", Meiryo, sans-serif;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--cream);
  color: var(--dark);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--amber);
  text-decoration: none;
  border-bottom: 1px solid rgba(217, 150, 50, 0.35);
  transition: color 0.15s ease, border-color 0.15s ease;
}
a:hover { color: var(--amber-hover); border-bottom-color: var(--amber-hover); }
a:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 2px;
  border-radius: 3px;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 32px 20px 80px;
}

/* Header / brand */
.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  padding-top: 8px;
}
.brand a {
  display: flex;
  align-items: center;
  gap: 14px;
  color: var(--dark);
  border-bottom: none;
}
.brand a:hover { color: var(--dark); }
.brand img:not(.brand-wordmark) {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  display: block;
}
.brand-wordmark {
  height: 28px;
  width: auto;
  display: block;
}

/* Landing hero */
.hero {
  text-align: center;
  margin: 64px 0 40px;
}
.hero-icon {
  width: 128px;
  height: 128px;
  border-radius: 28px;
  display: block;
  margin: 0 auto 20px;
}
.hero-wordmark {
  display: block;
  margin: 0 auto;
  width: auto;
  height: 68px;
  max-width: 80%;
}
.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0);
  white-space: nowrap; border: 0;
}

.card-list {
  display: grid;
  gap: 12px;
  margin: 40px auto 0;
}
.card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 20px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--dark);
  border-bottom: 1px solid var(--border);
  transition: border-color 0.15s ease, transform 0.15s ease;
}
.card:hover {
  border-color: var(--amber);
  color: var(--dark);
  transform: translateY(-1px);
}
.card-title { font-weight: 600; font-size: 17px; }
.card-desc { font-size: 13px; color: var(--dark-soft); margin-top: 2px; }
.card-arrow { color: var(--amber); font-size: 20px; line-height: 1; }

.footer {
  margin-top: 64px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  font-size: 13px;
  color: var(--dark-soft);
  text-align: center;
}
.footer a { color: var(--dark-soft); border-bottom-color: var(--border); }
.footer a:hover { color: var(--amber); border-bottom-color: var(--amber); }

/* Legal doc pages */
.lang-toggle {
  display: inline-flex;
  gap: 0;
  background: var(--cream-soft);
  border-radius: 999px;
  padding: 3px;
  margin-left: auto;
}
.lang-toggle button {
  font-family: inherit;
  font-size: 13px;
  font-weight: 600;
  color: var(--dark-soft);
  background: transparent;
  border: none;
  padding: 6px 14px;
  border-radius: 999px;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
}
.lang-toggle button.active {
  background: #fff;
  color: var(--dark);
  box-shadow: 0 1px 2px rgba(0,0,0,0.06);
}

article { margin-top: 40px; }
article h1 {
  font-size: 32px;
  line-height: 1.25;
  margin: 0 0 16px;
  font-weight: 700;
}
article h2 {
  font-size: 20px;
  line-height: 1.35;
  margin: 40px 0 12px;
  font-weight: 700;
}
article p { margin: 12px 0; }
article ul { padding-left: 22px; margin: 12px 0; }
article li { margin: 6px 0; }
article strong { font-weight: 700; }
article code {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.92em;
  background: rgba(43, 47, 57, 0.06);
  padding: 1px 6px;
  border-radius: 4px;
}
article em {
  font-style: normal;
  color: var(--dark-soft);
  font-size: 14px;
}

.doc-back {
  display: inline-block;
  margin-top: 48px;
  font-size: 14px;
  color: var(--dark-soft);
  border-bottom: 1px solid var(--border);
}
.doc-back:hover { color: var(--amber); border-bottom-color: var(--amber); }

/* Hide inactive language section */
[data-lang]:not(.active) { display: none; }

@media (max-width: 480px) {
  .container { padding: 24px 16px 64px; }
  .hero { margin: 40px 0 32px; }
  .hero-icon { width: 108px; height: 108px; border-radius: 24px; }
  .hero-wordmark { height: 56px; }
  .brand-wordmark { height: 24px; }
  article h1 { font-size: 26px; }
  article h2 { font-size: 18px; margin-top: 32px; }
}