:root {
  --bg: #f5f7fb;
  --panel: #ffffff;
  --text: #111827;
  --muted: #6b7280;
  --line: #e2e8f0;
  --primary: #1d4ed8;
  --primary-soft: #e8edfb;
  --ok: #166534;
  --ok-soft: #dcfce7;
  --warn: #92400e;
  --warn-soft: #fef3c7;
  --plan: #475569;
  --plan-soft: #e2e8f0;
  --danger: #b91c1c;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f172a;
    --panel: #1e293b;
    --text: #f1f5f9;
    --muted: #94a3b8;
    --line: #334155;
    --primary: #6f93f0;
    --primary-soft: #1e2a52;
    --ok: #86efac;
    --ok-soft: #14351f;
    --warn: #fcd34d;
    --warn-soft: #3b2f0b;
    --plan: #cbd5e1;
    --plan-soft: #334155;
    --danger: #fca5a5;
  }
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, "Segoe UI", "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", sans-serif;
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 24px;
  background: var(--panel);
  border-bottom: 1px solid var(--line);
}

.brand { display: flex; align-items: center; gap: 12px; }
.mark {
  width: 36px; height: 36px; border-radius: 9px;
  background: var(--primary); color: #fff;
  display: grid; place-items: center; font-weight: 700; font-size: 20px;
}
.brand-text { display: flex; flex-direction: column; line-height: 1.25; }
.brand-text strong { font-size: 18px; letter-spacing: 0.04em; }
.brand-text small { color: var(--muted); font-size: 12px; }

.who { display: flex; align-items: center; gap: 12px; font-size: 14px; }
.link {
  background: none; border: 0; padding: 4px 6px; color: var(--primary);
  font: inherit; cursor: pointer; text-decoration: underline;
}

main { flex: 1; width: 100%; max-width: 1040px; margin: 0 auto; padding: 32px 24px; }
.muted { color: var(--muted); }

.hero { text-align: center; padding: 56px 8px 24px; }
.hero h1 { font-size: 28px; margin: 0 0 8px; font-weight: 600; }
.hero p { margin: 0 auto 28px; max-width: 34em; color: var(--muted); }

.btn {
  display: inline-block; background: var(--primary); color: #fff; border: 0;
  border-radius: 8px; padding: 11px 28px; font: inherit; font-size: 16px; cursor: pointer;
}
.btn:hover { filter: brightness(1.08); }
.btn:focus-visible, .link:focus-visible, .card:focus-visible { outline: 3px solid var(--primary); outline-offset: 2px; }

.notice {
  margin: 0 0 20px; padding: 10px 14px; border-radius: 8px;
  background: var(--warn-soft); color: var(--warn); font-size: 14px;
}
.notice.error { color: var(--danger); background: var(--panel); border: 1px solid var(--danger); }

.section-title { font-size: 15px; color: var(--muted); font-weight: 500; margin: 0 0 14px; }

.grid {
  display: grid; gap: 16px;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}

.card {
  display: flex; flex-direction: column; gap: 10px; text-decoration: none; color: inherit;
  background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 18px 18px 16px;
}
a.card:hover { border-color: var(--primary); box-shadow: 0 2px 10px rgba(29, 78, 216, 0.12); }
.card.planned { opacity: 0.72; }
.card-head { display: flex; align-items: baseline; justify-content: space-between; gap: 8px; }
.card-name { font-size: 18px; font-weight: 600; }
.card-product { font-size: 12px; color: var(--muted); }
.card-desc { margin: 0; font-size: 14px; color: var(--muted); flex: 1; }

.badge { align-self: flex-start; font-size: 12px; padding: 2px 10px; border-radius: 999px; }
.badge.live { background: var(--ok-soft); color: var(--ok); }
.badge.separate { background: var(--warn-soft); color: var(--warn); }
.badge.planned { background: var(--plan-soft); color: var(--plan); }

.empty { text-align: center; padding: 48px 8px; color: var(--muted); }

.foot { padding: 16px 24px; text-align: center; font-size: 12px; color: var(--muted); }

@media (max-width: 560px) {
  .top { padding: 12px 16px; }
  main { padding: 20px 16px; }
  .hero { padding-top: 32px; }
}