:root {
  --paper: #f6f4ef;
  --paper-dim: #ece8de;
  --ink: #191714;
  --ink-soft: #504b43;
  --ink-faint: #8a8478;
  --signal: #a63a2c;
  --signal-soft: #a63a2c1a;
  --rule: #d9d3c4;
  --serif: "Fraunces", Georgia, serif;
  --mono: "IBM Plex Mono", ui-monospace, Menlo, monospace;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
  --max: 640px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #17140f;
    --paper-dim: #201c15;
    --ink: #f2ede2;
    --ink-soft: #c9c2b3;
    --ink-faint: #83796a;
    --signal: #e0684f;
    --signal-soft: #e0684f26;
    --rule: #34301f;
  }
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--paper);
  color: var(--ink);
}

body {
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

.progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--rule);
  z-index: 10;
}
.progress__fill {
  height: 100%;
  width: 0%;
  background: var(--signal);
  transition: width 0.4s ease;
}

.app {
  max-width: var(--max);
  margin: 0 auto;
  padding: 72px 24px 96px;
  min-height: 100vh;
}

.screen {
  animation: rise 0.35s ease both;
}
@keyframes rise {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.kicker {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin: 0 0 18px;
}

h1, h2 {
  font-family: var(--serif);
  font-weight: 600;
  line-height: 1.12;
  margin: 0 0 24px;
  letter-spacing: -0.01em;
}
h1 { font-size: clamp(30px, 6vw, 42px); }
h2 { font-size: clamp(24px, 5vw, 30px); }

.lede {
  font-size: 19px;
  color: var(--ink-soft);
  margin: 0 0 20px;
}

p { margin: 0 0 20px; }

.rule-list {
  list-style: none;
  margin: 28px 0;
  padding: 0;
  border-top: 1px solid var(--rule);
}
.rule-list li {
  padding: 16px 0;
  border-bottom: 1px solid var(--rule);
}
.rule-list b { font-family: var(--sans); font-weight: 600; }

.quote {
  font-family: var(--serif);
  font-style: italic;
  font-size: 22px;
  line-height: 1.4;
  color: var(--ink);
  margin: 0 0 32px;
}

.field {
  margin-bottom: 22px;
}
.field label {
  display: block;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 8px;
}
.field input[type="text"],
.field input[type="email"],
.field textarea {
  width: 100%;
  font-family: var(--sans);
  font-size: 17px;
  color: var(--ink);
  background: transparent;
  border: none;
  border-bottom: 1.5px solid var(--rule);
  padding: 10px 2px;
  outline: none;
  transition: border-color 0.2s ease;
}
.field textarea {
  border: 1.5px solid var(--rule);
  border-radius: 4px;
  padding: 14px;
  min-height: 140px;
  resize: vertical;
  line-height: 1.5;
}
.field input:focus,
.field textarea:focus {
  border-color: var(--signal);
}

.options {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin: 8px 0 28px;
}
.option {
  text-align: left;
  font-family: var(--sans);
  font-size: 16px;
  color: var(--ink);
  background: var(--paper-dim);
  border: 1.5px solid var(--rule);
  border-radius: 8px;
  padding: 15px 18px;
  cursor: pointer;
  transition: border-color 0.15s ease, background 0.15s ease;
}
.option:hover { border-color: var(--ink-faint); }
.option.selected {
  border-color: var(--signal);
  background: var(--signal-soft);
}
.option .code {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink-faint);
  margin-right: 10px;
}

.actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 36px;
}

.btn {
  font-family: var(--sans);
  font-size: 16px;
  font-weight: 600;
  border: none;
  border-radius: 8px;
  padding: 14px 26px;
  cursor: pointer;
  transition: opacity 0.15s ease, transform 0.1s ease;
}
.btn:active { transform: scale(0.98); }
.btn:disabled { opacity: 0.4; cursor: not-allowed; }
.btn-primary { background: var(--ink); color: var(--paper); }
.btn-primary:hover:not(:disabled) { opacity: 0.85; }
.btn-ghost {
  background: none;
  color: var(--ink-faint);
  padding: 14px 4px;
}
.btn-ghost:hover { color: var(--ink); }

.meta-row {
  display: flex;
  justify-content: space-between;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink-faint);
  margin-bottom: 28px;
}

.footnote {
  font-size: 14px;
  color: var(--ink-faint);
  margin-top: 40px;
  padding-top: 20px;
  border-top: 1px solid var(--rule);
}
.footnote a { color: var(--ink-soft); }

.result-number {
  font-family: var(--serif);
  font-size: clamp(48px, 12vw, 80px);
  font-weight: 900;
  line-height: 1;
  margin: 12px 0 8px;
}
.result-band {
  color: var(--ink-soft);
  margin-bottom: 40px;
}

.result-block {
  padding: 28px 0;
  border-top: 1px solid var(--rule);
}
.result-block:last-of-type { border-bottom: 1px solid var(--rule); }
.result-block .kicker { margin-bottom: 10px; }
.result-block h2 { margin-bottom: 14px; }
.result-block p { white-space: pre-line; }

.error-text {
  color: var(--signal);
  font-size: 14px;
  margin: -10px 0 20px;
}

.center-note {
  text-align: center;
  color: var(--ink-faint);
  padding: 60px 0;
}

@media (max-width: 480px) {
  .app { padding: 56px 18px 80px; }
}