body.yb-preview { margin: 0; }
.yb-backing {
  --ink: #17344a;
  --body: #203340;
  --muted: #455966;
  --line: #cbd7df;
  --wash: #edf2f4;
  --cream: #faf8f3;
  max-width: 960px;
  margin: 0 auto;
  padding: clamp(1rem, 4vw, 3rem);
  color: var(--body);
  font: 1rem/1.6 "Open Sans", Arial, sans-serif;
}
.yb-backing *, .yb-backing *::before, .yb-backing *::after { box-sizing: border-box; }
.yb-backing [hidden] { display: none !important; }
.yb-backing h1, .yb-backing h2 {
  color: var(--ink);
  font-family: Bastia, Georgia, serif;
  line-height: 1.12;
  margin: 0 0 .7rem;
}
.yb-backing h1 { font-size: clamp(2.1rem, 6vw, 3.6rem); }
.yb-backing h2 { font-size: clamp(1.5rem, 4vw, 2.1rem); }
.yb-backing h3 { margin: 0 0 .2rem; font-size: 1.08rem; color: var(--ink); }
.yb-backing p { margin: 0 0 .9rem; }
.yb-backing .brand { color: var(--ink); font: 700 1.15rem/1.4 Fraunces, Georgia, serif; }
.yb-backing .intro { background: var(--cream); padding: clamp(1.2rem, 4vw, 2.5rem); margin-bottom: 1.25rem; }
.yb-backing .intro > :last-child { max-width: 39rem; margin-bottom: 0; }
.yb-backing .box { padding: clamp(1rem, 3vw, 1.65rem); border: 1px solid var(--line); margin: 0 0 1.25rem; border-radius: .45rem; }
.yb-backing .fields, .yb-backing .plans, .yb-backing .summary { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .85rem 1.15rem; }
.yb-backing label { display: grid; align-content: start; gap: .25rem; font-weight: 650; }
.yb-backing input, .yb-backing select, .yb-backing button {
  width: 100%;
  min-height: 44px;
  font: inherit;
  color: var(--ink);
  border: 1px solid #8196a4;
  border-radius: .35rem;
  background: white;
  padding: .4rem .6rem;
}
.yb-backing button { width: auto; cursor: pointer; font-weight: 650; padding-inline: .95rem; }
.yb-backing button.primary { color: white; background: var(--ink); border-color: var(--ink); }
.yb-backing button:disabled { opacity: .65; cursor: default; }
.yb-backing :is(a, button, select, input):focus-visible { outline: 3px solid #ad482c; outline-offset: 3px; }
.yb-backing a { color: #1e526f; text-underline-offset: .16em; }
.yb-backing .presets { display: flex; align-items: center; flex-wrap: wrap; gap: .45rem; margin: .8rem 0; }
.yb-backing .note { color: var(--muted); font-size: .94rem; }
.yb-backing .error { margin: .65rem 0 0; color: #932c20; font-weight: 650; }
.yb-backing .result { background: var(--wash); }
.yb-backing dl { margin: .45rem 0 .9rem; }
.yb-backing dd { margin: 0; font-weight: 700; }
.yb-backing .summary dd { font-size: clamp(1.25rem, 3vw, 1.65rem); color: var(--ink); }
.yb-backing .plan { background: white; padding: .85rem; border-radius: .35rem; }
.yb-backing .plan dl { margin-bottom: 0; }
.yb-backing .plan dl div { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: .65rem; padding: .3rem 0; border-top: 1px solid var(--line); }
.yb-backing .plan dd { text-align: right; }
.yb-backing .plans + p { margin-top: .85rem; margin-bottom: 0; }
.yb-backing .method { max-width: 46rem; }
.yb-backing .method ol { padding-left: 1.4rem; }
.yb-backing .method li + li { margin-top: .3rem; }
.yb-backing .visually-hidden { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
@media (max-width: 640px) {
  .yb-backing .fields, .yb-backing .plans { grid-template-columns: minmax(0, 1fr); }
  .yb-backing .fields + [hidden] + p { margin-top: .85rem; }
}