:root {
  --bg: #fafafa;
  --text: #1f2937;
  --text-2: #4b5563;
  --border: #d1d5db;
  --accent: #FFF2A8;
  --link: #1d4ed8;
  --ok: #166534;
  --ok-bg: #dcfce7;
  --bad: #991b1b;
  --bad-bg: #fee2e2;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: "SF Mono", Monaco, Consolas, "Liberation Mono", monospace;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 16px; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 16px/1.6 var(--font);
}
header, nav, main, footer { max-width: 760px; margin: 0 auto; padding: 0 16px; }
header { padding-top: 32px; }
h1 { font-size: 30px; line-height: 1.25; margin: 0 0 4px; }
.subtitle { margin: 0; color: var(--text-2); font-size: 18px; }
h2 { font-size: 24px; line-height: 1.25; margin: 0 0 12px; }
h3 { font-size: 14px; text-transform: uppercase; letter-spacing: .5px; color: var(--text-2); margin: 24px 0 8px; }
section { padding: 32px 0 8px; }
a { color: var(--link); }
a:focus-visible, button:focus-visible, input:focus-visible { outline: 3px solid var(--text); outline-offset: 2px; }
nav { display: flex; flex-wrap: wrap; gap: 4px 16px; padding-top: 16px; padding-bottom: 8px; font-size: 14px; }
nav a { padding: 6px 0; }
blockquote { margin: 0 0 8px; padding: 8px 16px; background: #f0f0f0; border-radius: 6px; color: var(--text-2); }
blockquote p, blockquote ul { margin: 4px 0; }
blockquote ul { padding-left: 20px; }
code {
  font-family: var(--mono); font-size: .92em;
  background: var(--accent); color: var(--text);
  padding: 1px 6px; border-radius: 4px; white-space: nowrap;
}
.fotky { display: grid; gap: 16px; grid-template-columns: 1fr; }
figure { margin: 0; }
figure img { width: 100%; height: auto; max-height: 420px; object-fit: contain; background: #f0f0f0; border-radius: 6px; display: block; }
figcaption { font-size: 14px; color: var(--text-2); margin-top: 4px; }
@media (min-width: 768px) { .fotky { grid-template-columns: repeat(3, 1fr); } }
.downloads { display: flex; flex-wrap: wrap; gap: 12px; }
.btn {
  display: inline-block; min-height: 44px; padding: 10px 16px;
  background: var(--text); color: #fff; border: 1px solid var(--text);
  border-radius: 6px; font: 600 16px/1.4 var(--font); text-decoration: none; cursor: pointer;
}
.btn:hover { background: #111827; }
.btn-secondary { background: transparent; color: var(--text); border-color: #9ca3af; }
.btn-secondary:hover { background: #f0f0f0; }
.steps { padding-left: 24px; }
.steps li { margin-bottom: 8px; }
dt { font-weight: 600; margin-top: 12px; }
dd { margin: 2px 0 0; color: var(--text-2); }
.note, .verdict { padding: 8px 12px; background: var(--accent); border-radius: 6px; color: var(--text); }
.note { margin: 16px 0 0; }
.verdict { margin-top: 16px; font-weight: 600; }
table { width: 100%; border-collapse: collapse; margin: 12px 0; }
th, td { text-align: left; padding: 8px 12px 8px 0; vertical-align: top; }
th { font-size: 14px; color: var(--text-2); }
tbody tr:nth-child(odd) { background: #f0f0f0; }
tbody td { padding-left: 8px; }
fieldset.question { border: 0; padding: 0; margin: 0 0 24px; min-width: 0; }
legend { font-weight: 600; padding: 0; margin-bottom: 8px; }
.option { display: flex; gap: 10px; align-items: flex-start; padding: 8px 10px; min-height: 44px; border-radius: 6px; cursor: pointer; }
.option:hover { background: #f0f0f0; }
.option input { margin-top: 5px; width: 18px; height: 18px; flex: none; }
.option.correct { background: var(--ok-bg); color: var(--ok); font-weight: 600; }
.option.wrong { background: var(--bad-bg); color: var(--bad); }
.feedback { margin: 8px 0 0; font-size: 15px; color: var(--text-2); }
.quiz-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.result { font-size: 20px; font-weight: 700; margin: 16px 0 0; }
.result:empty { display: none; }
footer { padding-top: 32px; padding-bottom: 48px; color: var(--text-2); font-size: 14px; }
[hidden] { display: none !important; }

.prubeh-table td { border-top: 1px solid #e5e7eb; }
.prubeh-cas { white-space: nowrap; color: var(--text-2); }