:root {
  --line-green: #06C755;
  --line-green-dark: #04A345;
  --bg: #FAFAFA;
  --surface: #FFFFFF;
  --text: #1A1C19;
  --text-muted: #5B5F5C;
  --border: #E3E6E2;
  --shadow: 0 1px 2px rgba(0,0,0,0.06), 0 1px 8px rgba(0,0,0,0.05);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #101410;
    --surface: #1A1F1B;
    --text: #ECEFEA;
    --text-muted: #A6ABA5;
    --border: #2A2F2B;
    --shadow: 0 1px 2px rgba(0,0,0,0.4), 0 1px 8px rgba(0,0,0,0.3);
  }
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang TC", "Noto Sans TC", "Microsoft JhengHei", Roboto, sans-serif;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

.page {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 24px 64px;
}

.top-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 28px 0 8px;
}

.logo {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
}

.brand {
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.brand small {
  display: block;
  font-weight: 400;
  font-size: 0.78rem;
  color: var(--text-muted);
}

.hero {
  min-height: 60vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 20px;
  padding: 40px 0;
}

.hero .logo-big {
  width: 96px;
  height: 96px;
}

.hero h1 {
  font-size: clamp(1.6rem, 5vw, 2.2rem);
  margin: 0;
  font-weight: 800;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--surface);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  color: var(--line-green-dark);
  font-weight: 700;
  font-size: 0.9rem;
  padding: 8px 18px;
  border-radius: 999px;
}

@media (prefers-color-scheme: dark) {
  .pill { color: var(--line-green); }
}

.pill .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--line-green);
}

.hero p {
  max-width: 46ch;
  color: var(--text-muted);
  margin: 0;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  box-shadow: var(--shadow);
  padding: 28px 28px;
  margin: 20px 0;
}

.card h2 {
  font-size: 1.15rem;
  margin: 0 0 12px;
  color: var(--line-green-dark);
}

@media (prefers-color-scheme: dark) {
  .card h2 { color: var(--line-green); }
}

.card p, .card li {
  color: var(--text);
}

.card ul {
  padding-left: 1.2em;
}

footer {
  text-align: center;
  padding: 32px 0 8px;
  color: var(--text-muted);
  font-size: 0.85rem;
}

footer a {
  color: var(--line-green-dark);
  text-decoration: none;
  font-weight: 600;
}

@media (prefers-color-scheme: dark) {
  footer a { color: var(--line-green); }
}

footer a:hover { text-decoration: underline; }

.meta {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-bottom: 28px;
}

h1.title {
  font-size: clamp(1.5rem, 4vw, 1.9rem);
  margin: 8px 0 4px;
}