/* Unbound RPZ Guard public page. Served under a CSP of style-src 'self': no inline styles anywhere. */
:root {
  color-scheme: light dark;
  --page: #f9f9f7; --surface: #fcfcfb; --surface-2: #f0efec;
  --ink: #0b0b0b; --ink-2: #52514e; --muted: #6b6a66; --border: #e1e0d9;
  --accent: #2a78d6; --accent-2: #eb6834; --good: #0ca30c;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root { --page: #0d0d0d; --surface: #1a1a19; --surface-2: #2c2c2a;
          --ink: #f0efec; --ink-2: #c3c2b7; --muted: #a3a29b; --border: #2c2c2a;
          --accent: #3987e5; --accent-2: #d95926; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--page); color: var(--ink); font-size: 16px; line-height: 1.6; }
.top { display: flex; align-items: center; gap: 12px; padding: 12px 16px; background: var(--surface);
       border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 1; }
.brand { font-weight: 700; color: var(--ink); text-decoration: none; }
.logo { color: var(--accent); }
.grow { flex: 1; }
.home { color: var(--ink-2); text-decoration: none; font-size: 14px; } .home:hover { color: var(--accent); }
.lang-toggle { display: inline-flex; border: 1px solid var(--border); border-radius: 999px; overflow: hidden; }
.lang-opt { font: inherit; font-size: 13px; padding: 4px 12px; border: 0; background: transparent; color: var(--ink-2); cursor: pointer; }
.lang-opt.on { background: var(--accent); color: #fff; }
main { max-width: 920px; margin: 0 auto; padding: 8px 16px 32px; }
section { margin: 36px 0; }
.hero h1 { font-size: clamp(30px, 6vw, 44px); line-height: 1.15; margin: 24px 0 12px; }
.lead { font-size: 19px; color: var(--ink-2); max-width: 70ch; }
h2 { font-size: 24px; margin: 0 0 12px; border-bottom: 1px solid var(--border); padding-bottom: 6px; }
h3 { font-size: 18px; margin: 22px 0 6px; }
p, li { max-width: 75ch; }
a { color: var(--accent); }
code { font-size: 0.9em; background: var(--surface-2); padding: 1px 5px; border-radius: 4px; overflow-wrap: anywhere; }
.muted { color: var(--muted); font-size: 15px; }
.facts { display: flex; flex-wrap: wrap; gap: 8px; list-style: none; padding: 0; margin: 20px 0 0; }
.facts li { background: var(--surface); border: 1px solid var(--border); border-radius: 999px; padding: 4px 14px; font-size: 14px; }
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 16px; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 4px 18px 10px; }
.card h3 { margin-top: 14px; color: var(--accent); }
.card ul { padding-left: 18px; margin: 6px 0; } .card li { margin: 6px 0; font-size: 15px; }
table.data { width: 100%; border-collapse: collapse; background: var(--surface); border: 1px solid var(--border); border-radius: 10px; overflow: hidden; }
table.data th, table.data td { text-align: left; padding: 8px 12px; border-bottom: 1px solid var(--border); vertical-align: top; }
table.data th { color: var(--ink-2); font-size: 14px; }
.diagram { margin: 0; background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 12px; overflow-x: auto; }
.diagram svg { display: block; width: 100%; min-width: 560px; height: auto; }
.diagram figcaption { color: var(--muted); font-size: 14px; margin-top: 8px; }
.diagram .box { fill: var(--page); stroke: var(--border); stroke-width: 1.5; }
.diagram .core { stroke: var(--accent); stroke-width: 2; }
.diagram .edge { stroke: var(--accent-2); stroke-width: 2; }
.diagram .client, .diagram .store { fill: var(--surface-2); }
.diagram text { fill: var(--ink); text-anchor: middle; font-family: inherit; }
.diagram .t { font-size: 14px; font-weight: 600; }
.diagram .s { font-size: 11.5px; fill: var(--ink-2); }
.diagram .l { font-size: 11.5px; fill: var(--muted); text-anchor: start; }
.diagram .ln { fill: none; stroke: var(--ink-2); stroke-width: 1.5; }
.diagram .dash { stroke-dasharray: 5 4; }
.diagram .ah { fill: var(--ink-2); }
.foot { text-align: center; color: var(--muted); font-size: 13px; padding: 24px 16px 40px; border-top: 1px solid var(--border); }
@media (max-width: 600px) { .lead { font-size: 17px; } section { margin: 28px 0; } }