:root {
  --ink: #22303a;
  --ink-soft: #55656f;
  --teal: #0e6e66;
  --teal-deep: #0b4f49;
  --tint: #edf3f1;
  --line: #d8e2df;
  --paper: #ffffff;
  --amber: #b9741a;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: 'Instrument Sans', system-ui, -apple-system, sans-serif;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.55;
}
.wrap { max-width: 940px; margin: 0 auto; padding: 0 20px; }

/* Header */
.site-head { border-bottom: 1px solid var(--line); background: var(--paper); }
.head-row { display: flex; align-items: center; justify-content: space-between; padding: 14px 20px; }
.brand { font-weight: 700; font-size: 1.15rem; color: var(--teal-deep); text-decoration: none; letter-spacing: -0.01em; }
.top-nav a { color: var(--ink-soft); text-decoration: none; margin-left: 16px; font-size: 0.92rem; }
.top-nav a:hover, .top-nav a:focus { color: var(--teal); }
.top-nav .all-link { color: var(--teal); font-weight: 600; }
@media (max-width: 560px) { .top-nav a { margin-left: 10px; font-size: 0.85rem; } }

/* Page intro */
h1 { font-size: 1.7rem; line-height: 1.2; letter-spacing: -0.02em; margin: 28px 0 6px; }
.lede { color: var(--ink-soft); margin: 0 0 22px; max-width: 60ch; }

/* Tool card */
.tool {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow: hidden;
  margin-bottom: 26px;
}
@media (max-width: 760px) { .tool { grid-template-columns: 1fr; } }
.tool-form { padding: 22px; background: var(--paper); }
.tool-form label { display: block; font-weight: 600; font-size: 0.9rem; margin: 14px 0 5px; }
.tool-form label:first-child { margin-top: 0; }
.tool-form input[type="number"],
.tool-form input[type="date"],
.tool-form input[type="text"],
.tool-form select,
.tool-form textarea {
  width: 100%;
  padding: 10px 12px;
  font: inherit;
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: 7px;
  background: #fbfdfc;
}
.tool-form input:focus, .tool-form select:focus, .tool-form textarea:focus {
  outline: 2px solid var(--teal);
  outline-offset: 1px;
  border-color: var(--teal);
}
.hint { font-size: 0.8rem; color: var(--ink-soft); margin: 4px 0 0; }
.btn {
  display: inline-block;
  margin-top: 18px;
  padding: 11px 22px;
  font: inherit;
  font-weight: 600;
  color: #fff;
  background: var(--teal);
  border: 0;
  border-radius: 7px;
  cursor: pointer;
}
.btn:hover { background: var(--teal-deep); }
.btn:focus-visible { outline: 3px solid var(--amber); outline-offset: 2px; }
.seg { display: flex; gap: 8px; flex-wrap: wrap; }
.seg label {
  flex: 1;
  margin: 0;
  padding: 9px 6px;
  text-align: center;
  border: 1px solid var(--line);
  border-radius: 7px;
  font-weight: 600;
  font-size: 0.88rem;
  cursor: pointer;
  min-width: 60px;
}
.seg input { position: absolute; opacity: 0; }
.seg input:checked + span { color: var(--teal-deep); }
.seg label:has(input:checked) { border-color: var(--teal); background: var(--tint); }

/* Result panel: the one bold element */
.tool-result {
  background: var(--teal-deep);
  color: #eaf4f2;
  padding: 26px 22px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.result-label { font-size: 0.88rem; opacity: 0.85; margin: 0; }
.result-big {
  font-size: 2.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
  margin: 2px 0 14px;
  word-break: break-all;
}
.result-rows { border-top: 1px solid rgba(255,255,255,0.22); padding-top: 12px; font-size: 0.95rem; }
.result-rows p { display: flex; justify-content: space-between; gap: 12px; margin: 6px 0; }
.result-rows b { font-variant-numeric: tabular-nums; font-weight: 600; }
.result-note { font-size: 0.8rem; opacity: 0.75; margin: 14px 0 0; }

/* Homepage grid */
.tool-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 14px; margin: 24px 0 32px; }
.tool-tile {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 18px;
  text-decoration: none;
  color: var(--ink);
  background: var(--paper);
}
.tool-tile:hover, .tool-tile:focus { border-color: var(--teal); background: var(--tint); }
.tool-tile h2 { font-size: 1.05rem; margin: 0 0 4px; color: var(--teal-deep); }
.tool-tile p { font-size: 0.88rem; color: var(--ink-soft); margin: 0; }

/* Article / SEO copy */
.tool-copy { max-width: 68ch; margin-bottom: 36px; }
.tool-copy h2 { font-size: 1.25rem; margin: 30px 0 8px; letter-spacing: -0.01em; }
.tool-copy p, .tool-copy li { color: #3a4750; }
.faq-item { border-top: 1px solid var(--line); padding: 14px 0; }
.faq-item h3 { font-size: 1rem; margin: 0 0 6px; }
.faq-item p { margin: 0; color: #3a4750; }

/* Ads */
.ad-box { margin: 22px 0; min-height: 90px; }

/* Footer */
.site-foot { border-top: 1px solid var(--line); background: var(--tint); margin-top: 40px; }
.foot-cols { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 24px; padding: 30px 0 10px; }
@media (max-width: 700px) { .foot-cols { grid-template-columns: 1fr; } }
.foot-brand { font-weight: 700; color: var(--teal-deep); margin: 0 0 6px; }
.foot-note { font-size: 0.85rem; color: var(--ink-soft); max-width: 34ch; margin: 0; }
.foot-title { font-weight: 600; font-size: 0.9rem; margin: 0 0 8px; }
.site-foot a { display: block; color: var(--ink-soft); text-decoration: none; font-size: 0.88rem; padding: 3px 0; }
.site-foot a:hover, .site-foot a:focus { color: var(--teal); }
.copyright { font-size: 0.78rem; color: var(--ink-soft); padding: 14px 0 24px; border-top: 1px solid var(--line); margin-top: 20px; }

textarea#wc-input { min-height: 220px; resize: vertical; }
@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }