:root {
  --bg: #f7f7f5; --surface: #fff; --text: #1b1b1f; --muted: #6b6b76; --border: #e4e4e0;
  --accent: #3b5bdb; --accent-text: #fff; --ok: #2b8a3e; --ok-bg: #e6f4ea; --warn: #b35c00; --warn-bg: #fff3e0;
  --bad: #c92a2a; --bad-bg: #fdecec; --unknown-bg: #eeeef0;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #131316; --surface: #1c1c21; --text: #ececf1; --muted: #9a9aa6; --border: #2e2e35;
    --accent: #748ffc; --accent-text: #0d0d10; --ok: #69db7c; --ok-bg: #1d3323; --warn: #ffa94d; --warn-bg: #3a2a14;
    --bad: #ff8787; --bad-bg: #3d1c1c; --unknown-bg: #2a2a30;
  }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.55 system-ui, -apple-system, "Segoe UI", sans-serif; }
a { color: var(--accent); }
.wrap { max-width: 1040px; margin: 0 auto; padding: 0 16px; }
.nav { display: flex; align-items: center; justify-content: space-between; padding-top: 18px; padding-bottom: 18px; gap: 12px; flex-wrap: wrap; }
.nav nav { display: flex; gap: 18px; align-items: center; flex-wrap: wrap; }
.nav nav a:not(.btn) { color: var(--text); text-decoration: none; }
.brand { font-weight: 700; font-size: 20px; color: var(--text); text-decoration: none; }
h1 { font-size: clamp(28px, 4vw, 40px); line-height: 1.15; margin: 24px 0 8px; }
.hero { padding: 48px 0 32px; max-width: 760px; }
.hero h1 { font-size: clamp(32px, 6vw, 54px); }
.lead { font-size: 19px; color: var(--muted); }
.sub { color: var(--muted); font-size: 14px; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 22px; margin: 18px 0; overflow-x: auto; }
.card.narrow { max-width: 440px; margin: 48px auto; }
.grid3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 18px; }
.grid3 .card { margin: 0; }
.btn { display: inline-block; background: var(--accent); color: var(--accent-text); border: 0; border-radius: 8px; padding: 11px 18px; font: inherit; font-weight: 600; cursor: pointer; text-decoration: none; }
.btn.small { padding: 7px 14px; }
.btn.ghost { background: transparent; color: var(--accent); border: 1px solid var(--accent); }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.link { background: none; border: 0; color: var(--muted); font: inherit; cursor: pointer; text-decoration: underline; padding: 0; }
input, textarea { width: 100%; font: inherit; padding: 10px 12px; border: 1px solid var(--border); border-radius: 8px; background: var(--bg); color: var(--text); margin: 6px 0 14px; }
label { display: block; font-weight: 600; font-size: 14px; }
.checker { display: flex; gap: 10px; flex-wrap: wrap; margin: 24px 0 8px; }
.checker input { flex: 1 1 240px; margin: 0; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--border); vertical-align: top; }
th { font-size: 13px; color: var(--muted); font-weight: 600; }
.pill { display: inline-block; padding: 2px 10px; border-radius: 999px; font-size: 13px; font-weight: 600; white-space: nowrap; background: var(--unknown-bg); }
.pill.ok { background: var(--ok-bg); color: var(--ok); }
.pill.warn { background: var(--warn-bg); color: var(--warn); }
.pill.bad { background: var(--bad-bg); color: var(--bad); }
.row { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.plan .price { font-size: 36px; font-weight: 700; margin: 4px 0; }
.plan .price span { font-size: 16px; color: var(--muted); font-weight: 400; }
.plan.featured { border-color: var(--accent); }
.plan ul { padding-left: 18px; }
.flash { background: var(--ok-bg); color: var(--ok); padding: 10px 14px; border-radius: 8px; }
.error { color: var(--bad); }
footer { padding: 40px 16px; color: var(--muted); font-size: 14px; }