:root {
  color-scheme: light dark;
  --bg: #f7f1e7;
  --card: #fffaf1;
  --text: #272018;
  --muted: #6d6257;
  --accent: #a53c22;
  --line: #ded1c1;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #17130f;
    --card: #211b16;
    --text: #f8eee2;
    --muted: #c9b9a7;
    --accent: #ff8c6a;
    --line: #42362c;
  }
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
main {
  width: min(760px, calc(100% - 32px));
  margin: 0 auto;
  padding: 56px 0 72px;
}
.brand { color: var(--accent); font-weight: 800; letter-spacing: .04em; }
h1 { font: 700 clamp(2.3rem, 8vw, 4.8rem)/.98 Georgia, serif; margin: 24px 0; }
h2 { margin-top: 2.2rem; }
p, li { color: var(--muted); }
.lead { font-size: 1.2rem; }
.card {
  margin: 28px 0;
  padding: 24px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 22px;
}
a { color: var(--accent); }
.button {
  display: inline-block;
  padding: 12px 18px;
  color: var(--bg);
  background: var(--accent);
  border-radius: 999px;
  text-decoration: none;
  font-weight: 700;
}
footer { margin-top: 48px; padding-top: 20px; border-top: 1px solid var(--line); }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.plov-calc h2 { margin-top: 0; }
.plov-rows { display: grid; gap: 10px; }
.plov-row {
  display: grid;
  grid-template-columns: 1fr minmax(0, 9rem) 2.5rem;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 14px;
}
.plov-row > span:first-child { color: var(--text); font-weight: 600; }
.plov-row.is-driver { border-color: var(--accent); }
.plov-row.is-driver > span:first-child::after { content: "основа расчёта"; display: block; color: var(--accent); font-size: .8em; font-weight: 400; line-height: 1.3; }
.plov-row input {
  width: 100%;
  padding: 8px 10px;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 10px;
  font: inherit;
  text-align: right;
}
.plov-row input[aria-invalid="true"] { border-color: var(--accent); }
.unit { color: var(--muted); }
.plov-error { min-height: 1.6em; margin: 8px 0 0; color: var(--accent); }
.plov-status { margin: 4px 0 16px; color: var(--text); font-weight: 600; }
.plov-scales { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 16px; padding: 0; border: 0; }
.plov-scales legend { width: 100%; margin-bottom: 8px; color: var(--muted); }
.plov-scales button {
  min-width: 56px;
  min-height: 44px;
  padding: 8px 14px;
  color: var(--text);
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 999px;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}
.plov-scales button[aria-pressed="true"] { color: var(--bg); background: var(--accent); border-color: var(--accent); }
.plov-note { margin: 0; font-size: .95rem; }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { padding: 8px 10px; border-bottom: 1px solid var(--line); text-align: left; }
td, thead th { color: var(--muted); }
.app-card { display: grid; grid-template-columns: 215px 1fr; gap: 24px; align-items: center; }
.app-card img { width: 100%; height: auto; border-radius: 24px; }
.app-card h2 { margin-top: 0; }
@media (max-width: 600px) {
  .app-card { grid-template-columns: 1fr; }
  .app-card img { max-width: 215px; margin: 0 auto; }
}