/* Arkpine Software. One stylesheet, no external fonts, no scripts. Light and dark follow the system setting. */
:root {
  --bg: #f7f7f9;
  --surface: #ffffff;
  --text: #17181c;
  --muted: #5a5d68;
  --line: #e2e3e8;
  --accent: #3f3ab8;
  --accent-soft: #ecebfb;
  --focus: #3f3ab8;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111216;
    --surface: #1a1b21;
    --text: #ececf1;
    --muted: #a3a6b3;
    --line: #2c2e37;
    --accent: #a9a5ff;
    --accent-soft: #24233d;
    --focus: #a9a5ff;
  }
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
a { color: var(--accent); text-underline-offset: 2px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; border-radius: 4px; }

.skip { position: absolute; left: -9999px; top: 0; }
.skip:focus { left: 16px; top: 8px; background: var(--surface); padding: 8px 12px; z-index: 10; }

.wrap { max-width: 980px; margin: 0 auto; padding: 0 16px; }
.doc { max-width: 720px; }

header.top { border-bottom: 1px solid var(--line); background: var(--surface); }
header.top .wrap {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between;
  gap: 8px 20px; padding-top: 12px; padding-bottom: 12px;
}
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--text); text-decoration: none; font-weight: 700; font-size: 1.05rem; }
.brand img { width: 28px; height: 28px; }
nav ul { display: flex; flex-wrap: wrap; gap: 4px 18px; list-style: none; margin: 0; padding: 0; }
nav a { color: var(--muted); text-decoration: none; font-size: 0.95rem; }
nav a:hover, nav a[aria-current="page"] { color: var(--text); text-decoration: underline; }

main.wrap { padding-top: 36px; padding-bottom: 48px; }
h1 { font-size: 1.9rem; line-height: 1.2; margin: 0 0 12px; letter-spacing: -0.01em; }
h2 { font-size: 1.25rem; line-height: 1.3; margin: 32px 0 8px; }
h3 { font-size: 1rem; margin: 24px 0 0; color: var(--muted); font-weight: 600; }
h4 { font-size: 1.05rem; margin: 0; }
p, ul, ol { margin: 0 0 14px; }
li { margin-bottom: 6px; }

.lead { font-size: 1.1rem; color: var(--muted); max-width: 640px; margin-bottom: 18px; }
.points { display: flex; flex-wrap: wrap; gap: 8px; list-style: none; padding: 0; margin: 0 0 8px; }
.points li { margin: 0; background: var(--accent-soft); color: var(--text); border-radius: 999px; padding: 4px 12px; font-size: 0.9rem; }

.cards { display: grid; grid-template-columns: 1fr; gap: 14px; list-style: none; padding: 0; margin: 10px 0 0; }
@media (min-width: 640px) { .cards { grid-template-columns: 1fr 1fr; } }
@media (min-width: 940px) { .cards { grid-template-columns: 1fr 1fr 1fr; } }
.card {
  margin: 0; display: flex; flex-direction: column; gap: 8px;
  background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 18px;
}
.card p { margin: 0; }
.card .what { flex: 1; }
.card .meta { font-size: 0.9rem; color: var(--muted); }
.card .price { font-size: 0.9rem; font-weight: 600; }
.card .links { display: flex; flex-wrap: wrap; gap: 4px 14px; font-size: 0.95rem; }
.card .links a:first-child { font-weight: 600; }
.tag { display: inline-block; font-size: 0.78rem; font-weight: 600; color: var(--muted); border: 1px solid var(--line); border-radius: 999px; padding: 1px 8px; margin-left: 6px; vertical-align: 2px; }

.contact { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 18px; margin-top: 32px; }
.contact h2 { margin-top: 0; }

footer { border-top: 1px solid var(--line); color: var(--muted); font-size: 0.875rem; }
footer .wrap { padding-top: 20px; padding-bottom: 28px; }
footer ul { display: flex; flex-wrap: wrap; gap: 4px 16px; list-style: none; padding: 0; margin: 0 0 10px; }
footer a { color: var(--muted); }
footer p { margin: 0 0 6px; }

@media (max-width: 480px) {
  h1 { font-size: 1.6rem; }
  main.wrap { padding-top: 24px; }
}
@media (prefers-reduced-motion: reduce) { * { scroll-behavior: auto !important; } }