/* EMpulse — no external fonts, no CDN. */
:root {
  --bg: #ffffff;
  --surface: #f6f7f9;
  --ink: #14171c;
  --ink-2: #4a5160;
  --ink-3: #7b8291;
  --line: #e2e5ea;
  --accent: #1f4fd1;
  --accent-ink: #ffffff;
  --ok: #1d7a45;
  --bad: #b3261e;
  --warn: #8a5a00;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1216;
    --surface: #171b21;
    --ink: #e8eaee;
    --ink-2: #b4bac5;
    --ink-3: #868d9a;
    --line: #2a3039;
    --accent: #7ea2ff;
    --accent-ink: #0f1216;
    --ok: #5cc98a;
    --bad: #ff8a80;
    --warn: #e0b04f;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font: 16px/1.55 system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { max-width: 1040px; margin: 0 auto; padding: 0 20px; }
.mono, code, pre { font-family: var(--mono); font-size: 0.92em; }

header.top { border-bottom: 1px solid var(--line); }
header.top .wrap { display: flex; align-items: center; justify-content: space-between; height: 56px; gap: 16px; }
.brand { font-weight: 700; letter-spacing: 0.02em; color: var(--ink); }
header nav { display: flex; gap: 18px; align-items: center; flex-wrap: wrap; font-size: 0.95em; }
header nav a { color: var(--ink-2); }
header nav a.cta { color: var(--accent); font-weight: 600; }

section { padding: 40px 0 8px; }
h1 { font-size: 2.1em; line-height: 1.2; margin: 0 0 16px; letter-spacing: -0.01em; }
h2 { font-size: 1.35em; margin: 0 0 12px; }
h3 { font-size: 1.05em; margin: 0 0 6px; }
.hero { padding-top: 56px; max-width: 780px; }
.lead { font-size: 1.2em; color: var(--ink); }
.hero p { color: var(--ink-2); }
.disclaimer { font-size: 0.92em; border-left: 3px solid var(--line); padding-left: 12px; }
.meta, .note { color: var(--ink-2); font-size: 0.92em; }

.table-scroll { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; }
th, td { padding: 7px 10px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: middle; }
th { font-weight: 600; color: var(--ink-2); font-size: 0.85em; text-transform: uppercase; letter-spacing: 0.04em; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
td.cur { font-weight: 600; font-family: var(--mono); white-space: nowrap; }
.stale { font-weight: 400; color: var(--ink-3); font-size: 0.85em; }
tr.limited td { color: var(--ink-2); }
.spark-cell { color: var(--ink); padding-top: 2px; padding-bottom: 2px; }
svg.spark { display: block; }
.spark-hourly-cell { color: var(--accent, var(--ink)); }

.badge {
  display: inline-block; padding: 0 6px; border-radius: 4px; font-size: 0.8em; line-height: 1.6;
  border: 1px solid var(--line); color: var(--ink-2); font-family: var(--mono);
}
.badge.high { border-color: var(--ok); }
.badge.medium { border-style: dashed; }
.badge.limited { border-style: dotted; color: var(--ink-3); }
.badge.flag { color: var(--warn); border-color: currentColor; }
.badge.progress { border-style: dashed; color: var(--ink-3); }
td.updated { white-space: nowrap; color: var(--ink-2); font-size: 0.92em; }
.coverage-progress { margin-top: 20px; padding: 12px 16px; background: var(--surface); border-radius: 6px; }
.coverage-progress h3 { margin-bottom: 4px; }
.coverage-progress .gap { white-space: nowrap; }
table.coverage { max-width: 640px; }
.badge.ok { color: var(--ok); border-color: currentColor; }
.badge.down { color: var(--bad); border-color: currentColor; }

.features { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 16px; margin: 0; }
.features div { background: var(--surface); border-radius: 6px; padding: 14px 16px; }
.features dt { font-weight: 600; margin-bottom: 4px; }
.features dd { margin: 0; color: var(--ink-2); font-size: 0.95em; }

.plans { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; }
.plan { border: 1px solid var(--line); border-radius: 8px; padding: 20px; display: flex; flex-direction: column; }
.plan.featured { border-color: var(--accent); }
.plan ul { padding-left: 18px; margin: 8px 0 18px; color: var(--ink-2); flex: 1; }
.price { font-size: 1.8em; font-weight: 700; margin: 4px 0; }
.price span { font-size: 0.5em; font-weight: 400; color: var(--ink-2); }

.button, button {
  display: inline-block; text-align: center; padding: 9px 16px; border-radius: 6px; font: inherit; font-weight: 600;
  border: 1px solid var(--line); background: var(--bg); color: var(--ink); cursor: pointer;
}
.button.primary, button.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.button:hover, button:hover { text-decoration: none; filter: brightness(0.95); }

.keyform { max-width: 520px; }
.keyform label { display: block; font-weight: 600; margin-bottom: 6px; }
.keyform .row { display: flex; gap: 8px; }
.keyform input[type=email] {
  flex: 1; padding: 9px 12px; font: inherit; border: 1px solid var(--line); border-radius: 6px;
  background: var(--bg); color: var(--ink);
}
.hp { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }
.error { color: var(--bad); }
.keybox, .notice { background: var(--surface); border: 1px solid var(--line); border-radius: 8px; padding: 16px 20px; }
.notice { margin-bottom: 20px; }
code.key { display: block; padding: 10px 12px; background: var(--bg); border: 1px solid var(--line); border-radius: 6px;
  word-break: break-all; user-select: all; }
pre.example { overflow-x: auto; color: var(--ink-2); }

.prose { max-width: 780px; padding: 32px 0; }
.prose table { margin: 12px 0; font-size: 0.95em; }
.prose th { text-transform: none; letter-spacing: 0; font-size: 1em; }
.prose code { background: var(--surface); padding: 1px 4px; border-radius: 3px; }
table.status { max-width: 560px; }
table.status th { text-transform: none; letter-spacing: 0; font-size: 1em; color: var(--ink); }

footer { border-top: 1px solid var(--line); margin-top: 56px; padding: 20px 0 32px; color: var(--ink-3); font-size: 0.9em; }
footer nav { display: flex; gap: 18px; flex-wrap: wrap; margin-bottom: 8px; }
footer nav a { color: var(--ink-2); }

@media (max-width: 640px) {
  header nav a:not(.cta) { display: none; }
  h1 { font-size: 1.6em; }
  .keyform .row { flex-direction: column; }
}

/* task 004: checkout and invoice pages */
.form label { display: block; font-weight: 600; margin: 12px 0 6px; }
.form label.check { font-weight: 400; display: flex; gap: 8px; align-items: flex-start; }
.form input[type=text], .form input[type=email], .form textarea {
  width: 100%; padding: 9px 12px; font: inherit; border: 1px solid var(--line); border-radius: 6px;
  background: var(--bg); color: var(--ink);
}
.form button { margin-top: 16px; }
.paybox { display: flex; gap: 24px; flex-wrap: wrap; align-items: flex-start; margin: 16px 0; }
.paybox .qr svg { display: block; background: #fff; border-radius: 6px; }
.paybox dl { margin: 0; flex: 1; min-width: 260px; }
.paybox dt { color: var(--ink-2); font-size: 0.85em; text-transform: uppercase; letter-spacing: 0.04em; margin-top: 10px; }
.paybox dd { margin: 2px 0 0; }
.paybox .amount { font-size: 2em; font-weight: 700; user-select: all; }
.small { font-size: 0.8em; }
.warnings { border-left: 3px solid var(--warn); padding-left: 28px; }

/* task 022: sandbox, status history, calculator */
.form select { width: 100%; padding: 9px 12px; font: inherit; border: 1px solid var(--line); border-radius: 6px;
  background: var(--bg); color: var(--ink); }
.keyform input[type=text] { flex: 1; padding: 9px 12px; font: inherit; border: 1px solid var(--line); border-radius: 6px;
  background: var(--bg); color: var(--ink); }
.keyform label { margin-top: 10px; }
.keybox h3 { margin-top: 14px; }
table.example-rows, table.small { font-size: 0.9em; }
.benefit { margin-bottom: 20px; }
.uptime { display: flex; flex-wrap: wrap; gap: 3px; margin: 8px 0 20px; }
.uptime .day { width: 9px; height: 22px; border-radius: 2px; background: var(--line); display: inline-block; }
.uptime .day.ok { background: var(--ok); }
.uptime .day.warn { background: var(--warn); }
.uptime .day.down { background: var(--bad); }
.uptime .day.none { background: var(--line); }
ul.incidents { padding-left: 18px; }
ul.incidents li { margin-bottom: 8px; }

/* task 016: currency pages, charts, admin statistics */
td.cur a { color: inherit; }
.crumbs { margin: 0 0 8px; }
.answer { font-size: 1.15em; border-left: 3px solid var(--accent); padding-left: 12px; }
.chart-wrap { overflow-x: auto; color: var(--ink); margin: 8px 0 12px; }
svg.chart, svg.bars { display: block; max-width: 100%; height: auto; }
svg.chart .grid { stroke: var(--line); stroke-width: 1; }
svg.chart .lbl, svg.bars .lbl { fill: var(--ink-3); font-size: 11px; font-family: var(--mono); }
svg.bars rect { fill: var(--accent); }
table.kv td strong { font-size: 1.1em; }
.faq div { margin-bottom: 14px; }
.faq dt { font-weight: 600; }
.faq dd { margin: 4px 0 0; color: var(--ink-2); }
.grid2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 0 32px; }

/* task 024: weekly review and press pages */
ul.weeks { list-style: none; padding: 0; margin: 0; }
ul.weeks li { padding: 10px 0; border-bottom: 1px solid var(--line); }
.prose.weekly table { font-size: 0.92em; }
.prose.weekly h2 { margin-top: 28px; }