:root {
  --ink: #1b1d22;
  --ink-soft: #5b6270;
  --ink-faint: #8b93a1;
  --line: #e6e8ec;
  --bg: #f6f7f9;
  --card: #ffffff;
  --accent: #1b1d22;
  --good: #0f7b4f;
  --good-bg: #e7f6ee;
  --warm: #9a5b00;
  --warm-bg: #fdf1dc;
  --bad: #b42318;
  --bad-bg: #fdecea;
  --radius: 12px;
  --shadow: 0 1px 2px rgba(16, 24, 40, 0.04), 0 1px 3px rgba(16, 24, 40, 0.06);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--ink); }

/* ---------------------------------------------------------------- chrome */

.topbar {
  background: var(--card);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 10;
}

.topbar-inner {
  max-width: 1040px;
  margin: 0 auto;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.brand {
  font-weight: 700;
  font-size: 19px;
  letter-spacing: -0.02em;
  text-decoration: none;
}

.brand span { color: var(--ink-faint); }

.nav {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
}

.nav a { text-decoration: none; color: var(--ink-soft); font-size: 15px; }
.nav a:hover { color: var(--ink); }

.linkish {
  background: none;
  border: 0;
  padding: 0;
  font: inherit;
  font-size: 15px;
  color: var(--ink-soft);
  cursor: pointer;
}
.linkish:hover { color: var(--ink); }

.wrap { max-width: 1040px; margin: 0 auto; padding: 28px 20px 72px; }

/* ---------------------------------------------------------------- layout */

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 22px;
  margin-bottom: 18px;
}

.card-narrow { max-width: 520px; margin-left: auto; margin-right: auto; }

.card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}

.card-warn { border-color: #f0d29a; background: #fffbf2; }
.card-warn h2 { color: var(--warm); }

.grid { display: grid; gap: 18px; }
.grid-2 { grid-template-columns: 1fr 1fr; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 820px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}

h1 { font-size: 27px; letter-spacing: -0.02em; margin: 0 0 10px; }
h2 { font-size: 19px; letter-spacing: -0.01em; margin: 0 0 12px; }
h3 { font-size: 16px; margin: 0 0 8px; }
p { margin: 0 0 12px; }
p:last-child { margin-bottom: 0; }

.muted { color: var(--ink-soft); }
.small { font-size: 14px; }
.fineprint { color: var(--ink-faint); font-size: 13px; }
.bad { color: var(--bad); }
.block { display: block; }
.center { text-align: center; }

code {
  background: #eef0f3;
  border-radius: 5px;
  padding: 1px 5px;
  font-size: 13px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

/* ----------------------------------------------------------------- hero */

.hero { padding: 26px 0 30px; max-width: 720px; }
.hero h1 { font-size: 40px; line-height: 1.12; margin-bottom: 14px; }
.lede { font-size: 18px; color: var(--ink-soft); margin-bottom: 22px; }
.cta-row { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }

/* --------------------------------------------------------------- controls */

.btn {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  border: 1px solid var(--accent);
  border-radius: 9px;
  padding: 10px 18px;
  font: inherit;
  font-weight: 600;
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
}
.btn:hover { opacity: 0.9; }
.btn[disabled] { opacity: 0.45; cursor: not-allowed; }

.btn-sm { padding: 7px 13px; font-size: 14px; }

.btn-ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--line);
}

.stack { display: grid; gap: 14px; margin-top: 6px; }
.stack-tight { display: grid; gap: 6px; margin-top: 14px; justify-items: start; }

label { display: grid; gap: 6px; font-size: 14px; font-weight: 600; color: var(--ink-soft); }

input, select {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 9px;
  font: inherit;
  color: var(--ink);
  background: #fff;
}
input:focus, select:focus { outline: 2px solid #c9d2e3; outline-offset: 0; border-color: #c9d2e3; }

/* ---------------------------------------------------------------- flash */

.flash {
  border-radius: 10px;
  padding: 12px 16px;
  margin-bottom: 18px;
  font-size: 15px;
}
.flash-ok { background: var(--good-bg); color: var(--good); }
.flash-err { background: var(--bad-bg); color: var(--bad); }

/* ---------------------------------------------------------------- stats */

.stat { padding: 18px; }
.stat-n { display: block; font-size: 30px; font-weight: 700; letter-spacing: -0.02em; }
.stat-l { display: block; font-size: 13px; color: var(--ink-soft); margin-top: 2px; }

/* ---------------------------------------------------------------- table */

.table { width: 100%; border-collapse: collapse; margin-top: 6px; }
.table th {
  text-align: left;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--ink-faint);
  padding: 0 12px 10px;
  border-bottom: 1px solid var(--line);
}
.table td { padding: 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
.table tr:last-child td { border-bottom: 0; }

.tag {
  display: inline-block;
  white-space: nowrap;
  font-size: 12px;
  font-weight: 600;
  padding: 3px 9px;
  border-radius: 999px;
  background: #eef0f3;
  color: var(--ink-soft);
}
.tag-good { background: var(--good-bg); color: var(--good); }
.tag-warm { background: var(--warm-bg); color: var(--warm); }
.tag-sent { background: #e8eefc; color: #2c4a9a; }
.tag-bad { background: var(--bad-bg); color: var(--bad); }

.pill {
  font-size: 12px;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 999px;
  background: #eef0f3;
  color: var(--ink-soft);
}
.pill-pro { background: var(--good-bg); color: var(--good); }

/* --------------------------------------------------------------- pricing */

.price { border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; }
.price-pro { border-color: #cfdcea; background: #f8fbff; }
.price-tag { font-size: 28px; font-weight: 700; margin: 0 0 6px; letter-spacing: -0.02em; }

/* ---------------------------------------------------------------- email */

.email { padding: 18px; }
.pre {
  white-space: pre-wrap;
  word-break: break-word;
  background: #f6f7f9;
  border: 1px solid var(--line);
  border-radius: 9px;
  padding: 14px;
  font-size: 13px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  margin: 10px 0 0;
  max-height: 320px;
  overflow: auto;
}

details summary { cursor: pointer; margin-top: 10px; }

/* -------------------------------------------------------------- site footer */

.site-footer {
  border-top: 1px solid var(--line);
  margin-top: 40px;
  padding: 18px 0 44px;
}

.site-footer a { color: var(--ink-soft); }