:root {
  --ink: #1c2528;
  --ink-muted: #5b6b70;
  --bg: #f4f6f5;
  --surface: #ffffff;
  --border: #d8dee0;
  --accent: #1f6f6b;
  --accent-ink: #ffffff;
  --danger: #a93a2e;
  --danger-bg: #f7e6e3;
  --success: #2c6e45;
  --success-bg: #e4efe6;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  font-size: 15px;
  line-height: 1.5;
}

a { color: var(--accent); }

.container { max-width: 880px; margin: 0 auto; padding: 2rem 1.25rem; }
.container-wide { max-width: 1180px; margin: 0 auto; padding: 2rem 1.25rem; }

.topbar {
  display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 0.5rem 1rem;
  padding: 0.85rem 1.25rem; background: var(--surface); border-bottom: 1px solid var(--border);
}
.topbar .brand { font-weight: 700; }
.topbar form { display: inline; }
.nav-links { display: flex; flex-wrap: wrap; gap: 0.25rem 1rem; }
.nav-links a { color: var(--ink); font-size: 0.9rem; text-decoration: none; }
.nav-links a:hover { color: var(--accent); text-decoration: underline; }

.card {
  background: var(--surface); border: 1px solid var(--border); border-radius: 6px;
  padding: 1.25rem 1.5rem; margin-bottom: 1.25rem;
}

h1 { font-size: 1.5rem; margin: 0 0 1rem; }
h2 { font-size: 1.15rem; margin: 0 0 0.75rem; }

.field { margin-bottom: 1rem; }
.field label { display: block; font-weight: 600; margin-bottom: 0.3rem; font-size: 0.9rem; }
.field input[type=text], .field input[type=email], .field input[type=password],
.field input[type=number], .field select, .field textarea {
  width: 100%; padding: 0.55rem 0.7rem; border: 1px solid var(--border); border-radius: 4px;
  font-size: 0.95rem; background: var(--surface); color: var(--ink);
}
.field-row { display: flex; gap: 1rem; flex-wrap: wrap; }
.field-row .field { flex: 1; min-width: 160px; }
.hint { color: var(--ink-muted); font-size: 0.85rem; margin-top: 0.25rem; }

.btn {
  display: inline-block; padding: 0.6rem 1.1rem; border-radius: 4px; border: 1px solid var(--accent);
  background: var(--accent); color: var(--accent-ink); font-size: 0.95rem; cursor: pointer; text-decoration: none;
}
.btn.secondary { background: var(--surface); color: var(--ink); border-color: var(--border); }

.alert { padding: 0.75rem 1rem; border-radius: 4px; margin-bottom: 1rem; font-size: 0.9rem; }
.alert-danger { background: var(--danger-bg); color: var(--danger); }
.alert-success { background: var(--success-bg); color: var(--success); }

.check-list { list-style: none; padding: 0; margin: 0 0 1.25rem; }
.check-list li { padding: 0.3rem 0; display: flex; gap: 0.5rem; align-items: baseline; font-size: 0.9rem; }
.check-list .ok { color: var(--success); font-weight: 700; }
.check-list .fail { color: var(--danger); font-weight: 700; }

table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 0.5rem 0.6rem; border-bottom: 1px solid var(--border); font-size: 0.9rem; }
th { color: var(--ink-muted); font-weight: 600; text-transform: uppercase; font-size: 0.75rem; letter-spacing: 0.03em; }

.badge { display: inline-block; padding: 0.15rem 0.5rem; border-radius: 3px; font-size: 0.78rem; background: var(--border); }