:root {
  color-scheme: light dark;
  --bg: #f6f7fb;
  --panel: #ffffff;
  --text: #141824;
  --muted: #5c667a;
  --line: #dfe4ee;
  --accent: #2f67ff;
  --accent-strong: #1d4ed8;
  --success: #24a66a;
  --shadow: 0 18px 48px rgba(18, 24, 40, 0.10);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #090c13;
    --panel: #151a24;
    --text: #f3f6fb;
    --muted: #aab4c5;
    --line: #273143;
    --accent: #6ea2ff;
    --accent-strong: #8bb5ff;
    --success: #54d690;
    --shadow: 0 18px 48px rgba(0, 0, 0, 0.35);
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Noto Sans TC", "PingFang TC", sans-serif;
  font-size: 18px;
  line-height: 1.65;
}

a {
  color: var(--accent-strong);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.shell {
  width: min(1080px, calc(100% - 40px));
  margin: 0 auto;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 24px 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  color: var(--text);
  font-weight: 800;
  letter-spacing: 0;
}

.mark {
  display: grid;
  width: 48px;
  height: 48px;
  place-items: center;
  border-radius: 12px;
  background: #243a68;
  color: #8fb4ff;
  font-size: 25px;
  font-weight: 900;
}

.links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 16px;
}

.hero {
  padding: 58px 0 46px;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(280px, 0.75fr);
  gap: 34px;
  align-items: stretch;
}

.hero h1 {
  margin: 0 0 18px;
  font-size: clamp(40px, 6vw, 76px);
  line-height: 1.02;
  letter-spacing: 0;
}

.lead {
  max-width: 760px;
  margin: 0;
  color: var(--muted);
  font-size: clamp(20px, 2.4vw, 28px);
  line-height: 1.5;
}

.panel {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.status-panel {
  padding: 28px;
}

.status-panel h2,
.section h2,
.section h3 {
  margin: 0 0 14px;
  line-height: 1.25;
  letter-spacing: 0;
}

.status-list {
  display: grid;
  gap: 14px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.status-list li {
  display: grid;
  grid-template-columns: 26px 1fr;
  gap: 10px;
  align-items: start;
  color: var(--muted);
}

.check {
  color: var(--success);
  font-weight: 900;
}

.section {
  padding: 28px 0;
}

.content {
  display: grid;
  gap: 18px;
  padding: 34px;
}

.content p,
.content ul,
.content ol {
  margin: 0;
}

.content ul,
.content ol {
  padding-left: 1.3em;
}

.content li + li {
  margin-top: 8px;
}

.meta {
  color: var(--muted);
  font-size: 15px;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 0 20px;
  background: var(--accent);
  color: white;
  font-weight: 700;
}

.button.secondary {
  border: 1px solid var(--line);
  background: transparent;
  color: var(--text);
}

.footer {
  padding: 42px 0 56px;
  color: var(--muted);
  font-size: 15px;
}

.notice {
  border-left: 4px solid var(--accent);
  padding: 16px 18px;
  background: color-mix(in srgb, var(--accent) 10%, transparent);
}

.placeholder {
  font-weight: 800;
  color: #d97706;
}

@media (max-width: 760px) {
  body {
    font-size: 17px;
  }

  .shell {
    width: min(100% - 28px, 1080px);
  }

  .nav {
    align-items: flex-start;
    flex-direction: column;
  }

  .hero {
    padding-top: 34px;
  }

  .hero-grid {
    grid-template-columns: 1fr;
  }

  .content {
    padding: 24px;
  }
}