:root {
  --bg: #fff6ee;
  --card: #ffffff;
  --text: #2d201b;
  --muted: #5f4c45;
  --line: #ffd8ca;
  --accent: #ff6f4c;
  --link: #147fd3;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Arial, sans-serif;
  line-height: 1.75;
  color: var(--text);
  background: linear-gradient(180deg, #fff6ee, #eef8ff);
}

main {
  max-width: 880px;
  margin: 0 auto;
  padding: 24px 18px 48px;
}

.top {
  position: sticky;
  top: 0;
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  max-width: 880px;
  margin: 0 auto;
  padding: 12px 18px;
  background: rgba(255, 246, 238, 0.9);
  backdrop-filter: blur(4px);
  border-bottom: 1px solid rgba(255, 216, 202, 0.7);
}

.brand {
  display: inline-block;
  font-weight: 900;
  color: var(--accent);
  text-decoration: none;
}

label.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

#language {
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  color: var(--text);
  padding: 8px 12px;
  min-width: 120px;
}

article {
  margin-top: 16px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 26px;
  box-shadow: 0 18px 45px rgba(233, 90, 62, 0.13);
}

h1 { font-size: 30px; margin: 0 0 8px; }
h2 { font-size: 20px; margin: 28px 0 10px; }
p, li { color: var(--muted); }
a { color: var(--link); }

.brand-mark {
  display: inline-block;
  color: var(--accent);
  font-weight: 900;
  margin-bottom: 10px;
}

.date {
  font-size: 14px;
  color: #7a6259;
  margin-bottom: 16px;
}

.notice {
  background: #eaf6ff;
  border-left: 4px solid #2f9bef;
  border-radius: 10px;
  padding: 14px 16px;
  margin: 18px 0;
}

ul {
  margin: 0 0 16px;
  padding-left: 20px;
}

.footer {
  max-width: 880px;
  margin: 20px auto 0;
  padding: 0 18px 28px;
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  font-size: 14px;
  color: #6b5a53;
}

.footer a {
  color: #35597f;
}