:root {
  color-scheme: light dark;
  --accent: #0097a7;
  --accent-dark: #006d77;
  --surface: #ffffff;
  --text: #182126;
  --muted: #5f6b72;
  --border: #d8e1e5;
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body {
  font-family: "Segoe UI", "Malgun Gothic", Arial, sans-serif;
  background: #f4f7f8;
  color: var(--text);
  display: grid;
  place-items: center;
  padding: 24px;
}
.card {
  width: min(720px, 100%);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  box-shadow: 0 12px 36px rgba(0,0,0,.10);
  padding: 34px;
}
.brand { display: flex; align-items: center; gap: 18px; margin-bottom: 24px; }
.logo {
  width: 76px; height: 76px; border-radius: 22px;
  display: grid; place-items: center;
  background: var(--accent); color: white; font-size: 28px; font-weight: 800;
}
h1 { margin: 0; font-size: 28px; }
h2 { margin: 28px 0 10px; font-size: 18px; }
p, li { line-height: 1.65; }
.muted { color: var(--muted); }
.status {
  margin: 22px 0;
  border-left: 5px solid var(--accent);
  background: #eaf7f8;
  padding: 16px 18px;
  border-radius: 10px;
  color: #15373b;
}
.badge {
  display: inline-block; padding: 5px 10px; border-radius: 999px;
  background: #e0f3f5; color: var(--accent-dark); font-size: 13px; font-weight: 700;
}
.actions { margin-top: 28px; display: flex; gap: 12px; flex-wrap: wrap; }
a.button {
  display: inline-block; text-decoration: none; color: white; background: var(--accent-dark);
  padding: 11px 16px; border-radius: 10px; font-weight: 700;
}
.config-note { font-size: 15px; }
.small { font-size: 13px; }
.error { color: #b42318; }

@media (prefers-color-scheme: dark) {
  :root { --surface: #202326; --text: #f2f5f6; --muted: #b5c0c5; --border: #3a4247; }
  body { background: #151719; }
  .status { background: #17383c; color: #e9fbfc; }
  .badge { background: #17383c; color: #91e2e8; }
}