:root {
  color-scheme: light;
  font-family: ui-rounded, "SF Pro Rounded", "Noto Sans TC", system-ui, sans-serif;
  background: #fff7f2;
  color: #1f1a18;
  line-height: 1.55;
}

* { box-sizing: border-box; }

body { margin: 0; }

button, input, select { font: inherit; }

.shell { width: min(100% - 2rem, 48rem); margin: 0 auto; padding: 3.5rem 0 5rem; }

.hero { padding: 1rem 0 2rem; }

.eyebrow, .step { color: #c13d21; font-size: .78rem; font-weight: 800; letter-spacing: .1em; margin: 0; }

h1, h2, p { margin-top: 0; }

h1 { font-size: clamp(2.25rem, 9vw, 4.25rem); letter-spacing: -.06em; line-height: 1.03; margin-bottom: .75rem; }

h2 { font-size: 1.2rem; margin: 0; }

.hero > p:last-child { color: #665b55; font-size: 1.05rem; max-width: 40rem; }

.card { background: #fff; border: 1px solid #f0d9ce; border-radius: 1.25rem; box-shadow: 0 8px 24px rgba(88, 41, 25, .06); margin: 1rem 0; padding: 1.4rem; }

.section-heading { align-items: baseline; display: flex; gap: .7rem; margin-bottom: .85rem; }

.hint { color: #756a64; font-size: .9rem; }

.warning { color: #9a4b20; margin: 1rem 0 0; }

.form-grid { display: grid; gap: 1rem; grid-template-columns: repeat(2, minmax(0, 1fr)); }

label { color: #453a35; display: grid; font-size: .86rem; font-weight: 700; gap: .4rem; }

input, select { background: #fffdfa; border: 1px solid #d9c8be; border-radius: .65rem; color: #241f1d; min-height: 2.8rem; padding: .6rem .7rem; width: 100%; }

input:focus, select:focus { border-color: #e45131; box-shadow: 0 0 0 3px #ffe0d5; outline: none; }

.wide { grid-column: 1 / -1; }

.actions { align-items: center; display: flex; flex-wrap: wrap; gap: .6rem; margin-top: .25rem; }

.button { background: #e45131; border: 1px solid #e45131; border-radius: .65rem; color: #fff; cursor: pointer; font-weight: 800; min-height: 2.7rem; padding: .55rem .9rem; }

.button:hover:not(:disabled) { background: #c83c20; border-color: #c83c20; }

.button:disabled { cursor: not-allowed; opacity: .48; }

.secondary { background: #fff; color: #a63b25; }
.secondary:hover:not(:disabled) { background: #fff1ea; color: #8f2e1b; }
.tertiary { background: #f8eee9; border-color: #f8eee9; color: #703323; }
.danger { background: #fff; border-color: #d8a092; color: #a2291d; }
.danger:hover:not(:disabled) { background: #fff0ed; border-color: #c66a5a; color: #8c1d13; }

.status, .result { border-radius: .7rem; font-size: .92rem; margin: 1rem 0; padding: .8rem .9rem; }
.neutral { background: #f8eee9; color: #604d45; }
.success { background: #e9f7ed; color: #1d6b3a; }
.error { background: #fff0ed; color: #98291d; }
.working { background: #fff5d9; color: #805c00; }
.result a { color: inherit; font-weight: 800; }

.details { color: #645852; font-size: .9rem; padding: 1.5rem .25rem; }
.details h2 { font-size: 1rem; }
.details ul { padding-left: 1.2rem; }

@media (max-width: 40rem) {
  .shell { padding-top: 2rem; }
  .form-grid { grid-template-columns: 1fr; }
  .wide { grid-column: auto; }
}