:root {
  --bg: #f5f7f8;
  --card: #ffffff;
  --text: #1d2433;
  --muted: #667085;
  --primary: #16b5ab;
  --primary-dark: #11948c;
  --secondary: #e6eaef;
  --border: #d8dee6;
  --shadow: 0 18px 50px rgba(20, 24, 40, 0.08);
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background: linear-gradient(180deg, #eef8f7 0%, var(--bg) 100%);
  color: var(--text);
}
.krd-quiz {
  padding: 24px;
}
.quiz-card {
  max-width: 720px;
  margin: 0 auto;
  background: var(--card);
  border-radius: 24px;
  box-shadow: var(--shadow);
  padding: 28px;
  border: 1px solid rgba(0,0,0,0.04);
}
.quiz-progress-wrap {
  height: 10px;
  background: #ebeff4;
  border-radius: 999px;
  overflow: hidden;
  margin-bottom: 24px;
}
.quiz-progress-bar {
  width: 0%;
  height: 100%;
  background: linear-gradient(90deg, var(--primary), #83d3cc);
  transition: width 0.25s ease;
}
.quiz-panel { display: none; }
.quiz-panel.active { display: block; }
.eyebrow, .step-label {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--primary-dark);
  font-size: 12px;
  font-weight: 700;
}
h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.1;
  margin: 0 0 14px;
}
h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  line-height: 1.2;
  margin: 0 0 18px;
}
.lede, #resultBody, #resultOffer, .message {
  color: var(--muted);
  font-size: 1.02rem;
  line-height: 1.6;
}
.options {
  display: grid;
  gap: 12px;
}
.options label, .field-wrap {
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 16px;
  background: #fff;
}
.options label {
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 12px;
}
.options label:has(input:checked) {
  border-color: var(--primary);
  background: #f0fffd;
}
input[type="radio"], input[type="checkbox"] {
  accent-color: var(--primary-dark);
}
input[type="text"], input[type="email"] {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px 14px;
  margin-top: 8px;
  font-size: 1rem;
}
.nav {
  display: flex;
  gap: 12px;
  margin-top: 22px;
}
.nav.center { justify-content: center; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 0;
  border-radius: 999px;
  padding: 14px 20px;
  font-weight: 700;
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.15s ease, opacity 0.15s ease, background 0.15s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary {
  background: var(--primary);
  color: #fff;
}
.btn-primary:hover { background: var(--primary-dark); }
.btn-secondary {
  background: var(--secondary);
  color: var(--text);
}
.result-box {
  margin-top: 20px;
  padding: 18px;
  border-radius: 18px;
  background: #f7fbfc;
  border: 1px solid #d9edf0;
}
.message { margin-top: 16px; min-height: 24px; }
@media (max-width: 640px) {
  .krd-quiz { padding: 14px; }
  .quiz-card { padding: 18px; border-radius: 18px; }
  .nav { flex-direction: column; }
  .btn { width: 100%; }
}