:root {
  --ink: #1f2733;
  --muted: #5b6675;
  --line: #d7dde5;
  --accent: #1a5fb4;
  --accent-dark: #16324f;
  --bg-soft: #f4f7fa;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Segoe UI", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.55;
  color: var(--ink);
  background: #fff;
}
header.top {
  background: var(--accent-dark); color: #fff;
  padding: 12px 24px;
  display: flex; flex-wrap: wrap; align-items: center; gap: 14px;
  box-shadow: 0 2px 6px rgba(0,0,0,.25);
}
header.top .title { font-size: 18px; font-weight: 600; }
header.top .title small { display: block; font-size: 12px; font-weight: 400; color: #bcd2e8; }
header.top nav { margin-left: auto; display: flex; gap: 18px; flex-wrap: wrap; }
header.top nav a { color: #d8e6f3; text-decoration: none; font-size: 15px; }
header.top nav a:hover { color: #fff; text-decoration: underline; }
header.top nav a.active { color: #fff; font-weight: 600; }
main { max-width: 960px; margin: 0 auto; padding: 28px 24px 72px; }
h1 { font-size: 27px; margin: 0 0 10px; }
h2 { font-size: 21px; margin: 40px 0 10px; padding-top: 16px; border-top: 2px solid var(--line); }
p { margin: 8px 0; }
ul, ol { margin: 8px 0; padding-left: 26px; }
li { margin: 4px 0; }
a { color: var(--accent); }
.lead { font-size: 18px; color: var(--muted); margin-bottom: 22px; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; margin: 20px 0; }
.card {
  background: var(--bg-soft); border: 1px solid var(--line); border-radius: 8px;
  padding: 16px 18px;
}
.card h3 { margin: 0 0 6px; font-size: 17px; }
.card p { margin: 4px 0; font-size: 15px; }
.note {
  background: #eef4fb; border-left: 4px solid var(--accent);
  border-radius: 0 6px 6px 0; padding: 10px 14px; margin: 16px 0;
}
table.files { border-collapse: collapse; margin: 14px 0; width: 100%; font-size: 15px; }
table.files th, table.files td { border: 1px solid var(--line); padding: 8px 12px; text-align: left; vertical-align: top; }
table.files th { background: var(--bg-soft); }
table.files .size, table.files .mtime { white-space: nowrap; color: var(--muted); }
.btn {
  display: inline-block; background: var(--accent); color: #fff;
  padding: 9px 18px; border-radius: 6px; text-decoration: none; font-size: 15px;
}
.btn:hover { background: #2470cf; }
footer { max-width: 960px; margin: 0 auto; padding: 20px 24px 40px; color: var(--muted); font-size: 13px; border-top: 1px solid var(--line); }

@media (max-width: 700px) {
  header.top { padding: 12px 16px; gap: 10px; }
  header.top nav { width: 100%; margin-left: 0; gap: 8px 16px; }
  main { padding: 22px 16px 52px; }
  h1 { font-size: 24px; }
  h2 { font-size: 20px; margin-top: 32px; }
  .lead { font-size: 16px; }
  .grid { grid-template-columns: minmax(0, 1fr); }
  table.files, table.files tbody { display: block; }
  table.files tr:first-child { display: none; }
  table.files tr {
    display: block; margin: 12px 0; border: 1px solid var(--line);
    border-radius: 7px; overflow: hidden;
  }
  table.files td { display: block; border: 0; padding: 9px 12px; }
  table.files td:first-child { background: var(--bg-soft); font-weight: 600; overflow-wrap: anywhere; }
  table.files .size, table.files .mtime { display: inline-block; white-space: normal; padding-top: 3px; padding-bottom: 3px; }
  table.files .size::before, table.files .mtime::before { color: var(--ink); font-weight: 600; }
  table.files .size::before { content: "Размер: "; }
  table.files .mtime::before { content: "Дата: "; }
  footer { padding: 18px 16px 32px; }
}