:root {
  --bg: #f7f7f5; --surface: #ffffff; --text: #17181a; --muted: #6b6f76; --border: #e3e3df;
  --accent: #1f6feb; --accent-text: #ffffff; --up: #1a9c5b; --down: #d93a3a; --warn: #d99a1a; --pending: #9aa0a6;
  --notice-bg: #e8f3ec; --error-bg: #fbeaea; --banner-bg: #eef3fd;
  --radius: 10px; font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1012; --surface: #17191c; --text: #ececec; --muted: #9a9ea6; --border: #2a2d32;
    --accent: #4c8dff; --notice-bg: #13291d; --error-bg: #331717; --banner-bg: #162238;
  }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); line-height: 1.5; }
a { color: var(--accent); }
h1 { font-size: 1.6rem; margin: 0.6em 0 0.4em; line-height: 1.2; }
h2 { font-size: 1.15rem; margin: 0 0 0.6em; }
.wrap { max-width: 1000px; margin: 0 auto; padding: 0 16px; }
main.wrap { min-height: 70vh; padding-bottom: 48px; }

.top { background: var(--surface); border-bottom: 1px solid var(--border); }
.top .wrap { display: flex; align-items: center; justify-content: space-between; height: 58px; gap: 12px; }
.brand { font-weight: 700; font-size: 1.1rem; color: var(--text); text-decoration: none; white-space: nowrap; }
.logo { color: var(--up); }
nav { display: flex; align-items: center; gap: 16px; }
nav a { color: var(--text); text-decoration: none; font-size: 0.95rem; }
.foot { border-top: 1px solid var(--border); color: var(--muted); font-size: 0.85rem; padding: 20px 0; }

.btn { display: inline-block; background: var(--accent); color: var(--accent-text); border: 1px solid var(--accent);
  padding: 10px 18px; border-radius: 8px; font-weight: 600; font-size: 0.95rem; text-decoration: none; cursor: pointer; }
.btn.ghost { background: transparent; color: var(--accent); }
.btn.small { padding: 6px 12px; font-size: 0.85rem; }
.btn.danger { background: transparent; color: var(--down); border-color: var(--down); }
nav .btn { color: var(--accent-text); }
.linkbtn { background: none; border: 0; color: var(--text); font: inherit; font-size: 0.95rem; cursor: pointer; padding: 0; }
form.inline { display: inline; }

.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; margin: 16px 0; }
.card.narrow { max-width: 420px; margin: 48px auto; }
.notice, .error, .banner { padding: 12px 14px; border-radius: 8px; margin: 16px 0; font-size: 0.95rem; }
.notice { background: var(--notice-bg); }
.error { background: var(--error-bg); color: var(--down); }
.banner { background: var(--banner-bg); }
.muted { color: var(--muted); }
.small { font-size: 0.82rem; }
.row-between { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; }
.url { word-break: break-all; }

label { display: block; font-size: 0.9rem; font-weight: 600; }
input, select { display: block; width: 100%; margin-top: 4px; padding: 10px 12px; font: inherit; font-weight: 400;
  color: var(--text); background: var(--bg); border: 1px solid var(--border); border-radius: 8px; }
.stack { display: grid; gap: 14px; margin-bottom: 12px; }
.grid-form { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.span2 { grid-column: span 2; } .span3 { grid-column: span 3; }

table { width: 100%; border-collapse: collapse; }
table.monitors { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; margin-top: 12px; }
td, th { padding: 12px 10px; border-bottom: 1px solid var(--border); text-align: left; vertical-align: top; }
tr:last-child td { border-bottom: 0; }
th { font-size: 0.8rem; color: var(--muted); font-weight: 600; }
.num { text-align: right; white-space: nowrap; }
.empty { text-align: center; color: var(--muted); padding: 28px; }
.scroll { overflow-x: auto; }
.checks td { font-size: 0.88rem; padding: 8px; }

.dot { display: inline-block; width: 11px; height: 11px; border-radius: 50%; background: var(--pending); margin-top: 6px; }
.dot.up { background: var(--up); } .dot.down { background: var(--down); } .dot.paused { background: transparent; border: 2px solid var(--pending); }
h1 .dot { margin: 0 4px 0 0; vertical-align: middle; width: 14px; height: 14px; }
.down-text { color: var(--down); font-weight: 600; }

.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin: 16px 0; }
.stats div { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px; font-size: 0.82rem; color: var(--muted); }
.stats span { display: block; font-size: 1.35rem; font-weight: 700; color: var(--text); }
.spark { width: 100%; height: 80px; display: block; }
.spark polyline { stroke: var(--accent); stroke-width: 2; vector-effect: non-scaling-stroke; }
.spark .fail { stroke: var(--down); stroke-width: 3; opacity: 0.35; vector-effect: non-scaling-stroke; }
.incidents { padding-left: 18px; margin: 0; } .incidents li { margin: 6px 0; font-size: 0.92rem; }
.actions { display: flex; gap: 10px; }

.hero { text-align: center; padding: 56px 0 24px; }
.hero h1 { font-size: clamp(2rem, 5vw, 3rem); max-width: 760px; margin: 0 auto 16px; }
.lead { font-size: 1.15rem; color: var(--muted); max-width: 640px; margin: 0 auto 24px; }
.cta { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.fine { color: var(--muted); font-size: 0.85rem; margin-top: 14px; }
.features { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin: 40px 0; }
.features div { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px; }
.features h3 { margin: 0 0 6px; font-size: 1rem; } .features p { margin: 0; color: var(--muted); font-size: 0.92rem; }
.pricing h2 { text-align: center; font-size: 1.6rem; }
.plans { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.plan { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; display: flex; flex-direction: column; }
.plan.featured { border: 2px solid var(--accent); }
.plan h3 { margin: 0; } .plan ul { padding-left: 18px; flex: 1; } .plan li { margin: 4px 0; }
.price { font-size: 2rem; font-weight: 700; margin: 8px 0; } .price span { font-size: 1rem; color: var(--muted); font-weight: 400; }
.tag { font-size: 0.7rem; background: var(--banner-bg); color: var(--accent); padding: 2px 8px; border-radius: 99px; vertical-align: middle; }

.status-head { margin-top: 28px; padding: 16px; border-radius: var(--radius); color: #fff; font-weight: 700; font-size: 1.05rem; }
.status-head.ok { background: var(--up); } .status-head.bad { background: var(--down); }
.svc { padding: 14px 0; border-bottom: 1px solid var(--border); } .svc:last-child { border-bottom: 0; }
.state { font-size: 0.85rem; font-weight: 600; color: var(--pending); }
.state.up { color: var(--up); } .state.down { color: var(--down); }
.bars { display: flex; gap: 3px; margin: 10px 0 4px; height: 32px; }
.bars i { flex: 1; border-radius: 2px; background: var(--border); }
.bars i.good { background: var(--up); } .bars i.warn { background: var(--warn); } .bars i.bad { background: var(--down); }

@media (max-width: 760px) {
  .features, .plans { grid-template-columns: 1fr; }
  .grid-form { grid-template-columns: 1fr; } .span2, .span3 { grid-column: span 1; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .hide-sm { display: none; }
  nav { gap: 12px; } nav a:not(.btn) { font-size: 0.88rem; }
}