:root {
  color-scheme: light;
  --page-bg: #f5f8fb;
  --surface: #ffffff;
  --text: #17324d;
  --muted: #52657d;
  --brand: #176b87;
  --on-brand: #ffffff;
  --border: #cbd8e4;
  --focus: #1d4ed8;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  background-color: var(--page-bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", "Noto Sans TC", sans-serif;
  line-height: 1.7;
}

.page-shell {
  width: min(100% - 2rem, 680px);
  margin: 2rem auto;
  padding: 2rem;
}

.eyebrow { color: var(--brand); font-weight: 800; letter-spacing: .08em; }
.service-description { color: var(--muted); }
.service-card {
  margin-top: 2rem;
  padding: 1.25rem;
  border: 1px solid var(--border);
  border-radius: 1rem;
  background-color: var(--surface);
}
.service-card h2 {
  margin-block: 0 .75rem;
  font-size: clamp(1.5rem, 5vw, 2.25rem);
  font-weight: 800;
  line-height: 1.2;
}
.service-card p { max-width: 62ch; line-height: 1.6; }
button {
  padding: .7rem 1rem;
  border: 0;
  border-radius: .6rem;
  background-color: var(--brand);
  color: var(--on-brand);
  font: inherit;
  cursor: pointer;
}
button:focus-visible, a:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
}
.status { min-height: 2rem; color: var(--muted); }

@media (max-width: 390px) {
  .page-shell { margin: 1rem auto; padding: 1rem; }
}