:root {
  color-scheme: light;
  --bg: #f3f4f6;
  --panel: #ffffff;
  --text: #1f2937;
  --muted: #4b5563;
  --accent: #aa55ff;
  --border: #e5e7eb;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-width: 320px;
  font-family: "Noto Sans JP", "Noto Sans KR", "Noto Sans", system-ui,
    -apple-system, Segoe UI, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

a {
  color: var(--accent);
}

.wrap {
  width: min(760px, calc(100% - 32px));
  margin: 0 auto;
  padding: 40px 0 72px;
}

.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 36px;
}

.top-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.lang-link {
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
}

.lang-link:hover {
  color: var(--accent);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: inherit;
  text-decoration: none;
  font-weight: 800;
}

.brand img {
  width: 36px;
  height: 36px;
  border-radius: 10px;
}

h1 {
  margin: 0 0 12px;
  font-size: clamp(28px, 5vw, 40px);
  line-height: 1.2;
  letter-spacing: -0.03em;
}

.lead {
  margin: 0 0 24px;
  color: var(--muted);
  font-size: 17px;
}

.cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 18px;
  border-radius: 12px;
  background: var(--accent);
  color: #fff;
  font-weight: 700;
  text-decoration: none;
}

.card {
  margin-top: 28px;
  padding: 20px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--panel);
}

.card h2 {
  margin: 0 0 10px;
  font-size: 18px;
}

.card ul,
.card ol {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
}

.links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  margin-top: 28px;
  color: var(--muted);
  font-size: 14px;
}

.links a {
  color: var(--accent);
}