:root {
  --navy: #1a3a6b;
  --blue: #2457a6;
  --red: #c8102e;
  --ink: #1d232b;
  --muted: #5b6573;
  --line: #d7dde5;
  --bg: #f5f7fa;
  --card: #ffffff;
  --ok: #1e7b34;
  --bad: #b00020;
}

* { box-sizing: border-box; }

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

header {
  background: var(--navy);
  color: #fff;
}

.header-inner {
  max-width: 960px;
  margin: 0 auto;
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}

.header-inner img { width: 56px; height: 56px; border-radius: 50%; background: #fff; }
.site-name { font-size: 1.4rem; font-weight: 700; color: #fff; text-decoration: none; }

nav { margin-left: auto; display: flex; gap: 4px; flex-wrap: wrap; }
nav a {
  color: #fff;
  text-decoration: none;
  padding: 6px 10px;
  border-radius: 4px;
  font-size: 0.95rem;
}
nav a:hover, nav a[aria-current="page"] { background: rgba(255, 255, 255, 0.15); }

main { max-width: 960px; margin: 0 auto; padding: 24px 16px 40px; }

h1 { color: var(--navy); margin-top: 0; }
h2 { color: var(--navy); }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 20px;
  margin-bottom: 20px;
}

.hero { display: flex; gap: 24px; align-items: center; flex-wrap: wrap; }
.hero img { max-width: 100%; height: auto; border-radius: 6px; }
.hero > div { flex: 1 1 280px; }

.specs { list-style: none; padding: 0; margin: 0; }
.specs li { padding: 4px 0; border-bottom: 1px solid var(--line); }
.specs li:last-child { border-bottom: none; }
.specs b { display: inline-block; min-width: 190px; }

.button {
  display: inline-block;
  background: var(--blue);
  color: #fff;
  padding: 8px 16px;
  border-radius: 4px;
  text-decoration: none;
  border: none;
  font-size: 1rem;
  cursor: pointer;
}
.button:hover { background: var(--navy); }
.button.secondary { background: #e6eaf0; color: var(--ink); }

table { width: 100%; border-collapse: collapse; }
th, td { padding: 6px 8px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: middle; }
th { background: #eef2f7; font-size: 0.9rem; }
td.num, th.num { text-align: right; }

.table-wrap { overflow-x: auto; }

.wb input {
  width: 90px;
  padding: 4px 6px;
  font-size: 1rem;
  text-align: right;
  border: 1px solid var(--line);
  border-radius: 4px;
}
.wb tr.subtotal td { font-weight: 700; background: #f7f9fc; }
.wb .note { color: var(--muted); font-size: 0.85rem; }

.status { font-weight: 700; }
.status.ok { color: var(--ok); }
.status.bad { color: var(--bad); }

.warning {
  background: #fff4e5;
  border: 1px solid #f0b45a;
  border-radius: 6px;
  padding: 12px 16px;
  margin-bottom: 20px;
}

.envelope svg { width: 100%; height: auto; max-width: 640px; display: block; }

footer {
  text-align: center;
  color: var(--muted);
  font-size: 0.85rem;
  padding: 20px 16px;
}

@media (max-width: 600px) {
  nav { margin-left: 0; width: 100%; }
  .specs b { min-width: 0; display: block; }
}