:root {
  --teal: #2F5D62;
  --teal-deep: #244a4e;
  --ink: #24303A;
  --slate: #4A5A63;
  --mist: #F4F7F7;
  --pale: #BCD8D6;
  --warm: #FFF8E7;
  --paper: #ffffff;
  --line: #dde5e5;
  --shadow: 0 1px 2px rgba(36,48,58,.06), 0 8px 24px rgba(36,48,58,.06);
  --maxw: 720px;
  --radius: 12px;
  --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font); background: var(--mist); color: var(--ink);
  line-height: 1.5; -webkit-font-smoothing: antialiased;
}
a { color: var(--teal-deep); }
header.site {
  background: var(--paper); border-bottom: 1px solid var(--line); padding: 1rem 1.25rem;
}
header.site .wrap { max-width: 960px; margin: 0 auto; display: flex; justify-content: space-between; align-items: center; }
header.site .brand { font-weight: 700; font-size: 1.15rem; color: var(--teal-deep); text-decoration: none; }
header.site .brand span { color: var(--slate); font-weight: 400; font-size: .8rem; display: block; }
header.site nav a { margin-left: 1.2rem; font-size: .9rem; font-weight: 500; text-decoration: none; color: var(--slate); }
main { max-width: var(--maxw); margin: 0 auto; padding: 2rem 1.25rem 3rem; }
main.wide { max-width: 960px; }
h1 { font-size: 1.7rem; margin: 0 0 .4rem; }
h1 + p.lede { color: var(--slate); margin: 0 0 1.6rem; font-size: 1.02rem; }
.panel {
  background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1.4rem 1.5rem; box-shadow: var(--shadow); margin-bottom: 1.5rem;
}
.field { display: grid; gap: .35rem; margin-bottom: 1rem; }
.field label { font-size: .88rem; font-weight: 600; color: var(--slate); }
.field select, .field input {
  font: inherit; padding: .6rem .7rem; border: 1px solid var(--line); border-radius: 8px;
  background: var(--warm); color: var(--ink); width: 100%;
}
.row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
@media (max-width: 560px) { .row { grid-template-columns: 1fr; } }
.result {
  font-size: 1.4rem; font-weight: 700; color: var(--teal-deep); margin: 1rem 0 0;
  font-variant-numeric: tabular-nums;
}
.result small { display: block; font-size: .8rem; font-weight: 500; color: var(--slate); margin-top: .25rem; }
.tool-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 1rem; margin-top: 1.5rem; }
.tool-card {
  display: block; background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1.1rem 1.2rem; text-decoration: none; color: var(--ink); box-shadow: var(--shadow);
}
.tool-card h3 { margin: 0 0 .3rem; font-size: 1.05rem; color: var(--teal-deep); }
.tool-card p { margin: 0; font-size: .88rem; color: var(--slate); }
.ad-slot {
  margin: 1.5rem 0; padding: .5rem; text-align: center; color: var(--slate); font-size: .75rem;
  border: 1px dashed var(--line); border-radius: 8px; min-height: 90px; display: flex;
  align-items: center; justify-content: center;
}
footer.site { max-width: 960px; margin: 0 auto; padding: 2rem 1.25rem 3rem; color: var(--slate); font-size: .85rem; }
footer.site a { color: var(--slate); }
.note { color: var(--slate); font-size: .85rem; margin-top: .8rem; }