:root {
      color-scheme: light dark;
      --bg: #f5f5f7;
      --panel: #ffffff;
      --accent: #203c86;
      --border: #d0d0d5;
      --text: #1f1f20;
      --text-muted: #56565d;
      --warning: #cb2128;
    }
    body {
      font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
      margin: 0;
      padding: 0;
      background: var(--bg);
      color: var(--text);
    }
    a {
      color: var(--accent);
    }
    a:hover {
      text-decoration: underline;
    }
    .lang-switch {
      display: flex;
      justify-content: flex-end;
      max-width: 1000px;
      margin: 16px auto 0;
      gap: 10px;
      padding: 0 20px;
    }
    .lang-switch a,
    .lang-switch span {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-width: 56px;
      height: 40px;
      border-radius: 22px;
      padding: 0 16px;
      font-size: 0.95rem;
      text-decoration: none;
      background: var(--panel);
      border: 1px solid var(--border);
      box-shadow: 0 2px 6px rgba(31, 31, 32, 0.12);
      color: var(--accent);
    }
    .lang-switch a:hover {
      border-color: var(--accent);
    }
    .lang-switch .active {
      background: linear-gradient(135deg, rgba(32, 60, 134, 0.95), rgba(32, 60, 134, 0.75));
      border-color: rgba(32, 60, 134, 0.95);
      color: #fff;
      font-weight: 600;
      box-shadow: 0 8px 14px rgba(32, 60, 134, 0.2);
    }
    header {
      padding: 48px 24px 32px;
      text-align: center;
    }
    .header-inner {
      max-width: 860px;
      margin: 0 auto;
    }
    .logo {
      width: 120px;
      display: block;
      margin: 0 auto 24px;
    }
    h1 {
      margin: 0 0 12px;
      font-size: 2.4rem;
    }
    p.lead, p.intro {
      margin: 0 auto;
      max-width: 780px;
      font-size: 1.05rem;
      line-height: 1.6;
    }
    p.intro {
      margin-top: 16px;
      color: var(--text-muted);
    }
    main {
      max-width: 1000px;
      margin: 0 auto 80px;
      padding: 0 20px;
      display: grid;
      gap: 24px;
    }
    section.card {
      background: var(--panel);
      border-radius: 16px;
      border: 1px solid var(--border);
      padding: 28px;
      box-shadow: 0 12px 26px rgba(31, 31, 32, 0.08);
    }

details code{
        background: black;
        color: #fff;
        padding: 2px 5px;
        display: inline-block;
    }
details pre{margin:0;padding:0}
details pre code{margin:0;padding:10px 20px;    display: block;
    margin: 5px 0;}

    section.card h2 {
  margin-top: 0;
}
.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  margin: 8px 0 24px;
}
.download-meta {
  margin: 12px 0 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
      font-size: 0.95rem;
    }
    .download-meta span {
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
a.download-link {
  display: inline-block;
  margin: 8px 0 0;
  padding: 12px 24px;
  border-radius: 999px;
  background: var(--accent);
  color: #fff;
  text-decoration: none;
  font-weight: 600;
}
a.support-link {
  display: inline-block;
  margin: 8px 0 0;
  padding: 9px 24px;
  border-radius: 999px;
  background: rgba(32, 60, 134, 0.1);
  border: 3px solid var(--accent);
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
}
a.support-link:hover {
  background: rgba(32, 60, 134, 0.18);
}
    .warning {
      border-left: 4px solid var(--warning);
      background: rgba(203, 33, 40, 0.08);
      padding: 12px 16px;
      border-radius: 10px;
      font-size: 0.95rem;
      margin-top: 18px;
    }
    details {
      margin-top: 18px;
      background: rgba(0, 0, 0, 0.04);
      border-radius: 10px;
      padding: 14px 18px;
    }
    details summary {
      cursor: pointer;
      font-weight: 600;
    }
    ul {
      margin: 10px 0 0;
      padding-left: 20px;
      line-height: 1.55;
    }
    footer {
      text-align: center;
      font-size: 0.9rem;
      margin: 60px 0 32px;
      color: var(--text-muted);
    }
    footer a {
      color: var(--accent);
      font-weight: 600;
      text-decoration: none;
    }
    footer a:hover {
      text-decoration: underline;
    }