:root {
  --green: #16a34a;
  --green-dark: #166534;
  --green-soft: #dcfce7;
  --bg: #f6fbf7;
  --text: #163022;
  --muted: #5e6d63;
  --card: #ffffff;
  --border: #d9e8dc;
  --shadow: 0 20px 50px rgba(22, 48, 34, 0.08);
  --radius: 24px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at top right, rgba(22, 163, 74, 0.08), transparent 28%),
    linear-gradient(180deg, #ffffff 0%, var(--bg) 100%);
  color: var(--text);
}

.container {
  width: min(1100px, calc(100% - 32px));
  margin: 0 auto;
  padding: 32px 0 56px;
}

.hero {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 24px;
  align-items: stretch;
  margin-bottom: 24px;
}

.hero-card,
.panel {
  background: rgba(255, 255, 255, 0.88);
  border: 1px solid rgba(217, 232, 220, 0.9);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  backdrop-filter: blur(12px);
}

.hero-card {
  padding: 32px;
  position: relative;
  overflow: hidden;
}

.hero-card::after {
  content: "";
  position: absolute;
  right: -40px;
  top: -40px;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(22,163,74,0.18), rgba(22,163,74,0));
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--green-soft);
  color: var(--green-dark);
  border-radius: 999px;
  padding: 8px 14px;
  font-weight: 700;
  font-size: 13px;
  letter-spacing: .02em;
}

h1 {
  margin: 18px 0 12px;
  font-size: clamp(2rem, 4vw, 3.6rem);
  line-height: 1.02;
}

.subtitle {
  font-size: 1.08rem;
  line-height: 1.6;
  color: var(--muted);
  max-width: 60ch;
  margin-bottom: 22px;
}

.hero-points {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.chip {
  border: 1px solid var(--border);
  background: #fff;
  padding: 10px 14px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
}

.stats {
  padding: 28px;
  display: grid;
  gap: 16px;
  align-content: center;
}

.stat-box {
  background: linear-gradient(180deg, #fff 0%, #f7fcf8 100%);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 18px;
}

.stat-title {
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--muted);
  margin-bottom: 8px;
  font-weight: 700;
}

.stat-value {
  font-size: 1.5rem;
  font-weight: 800;
}

.layout {
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: 24px;
  align-items: start;
}

.panel {
  padding: 24px;
}

.panel h2 {
  margin: 0 0 8px;
  font-size: 1.4rem;
}

.panel p.lead {
  margin: 0 0 20px;
  color: var(--muted);
  line-height: 1.6;
}

.stepper {
  display: flex;
  gap: 10px;
  margin-bottom: 20px;
}

.step {
  flex: 1;
  padding: 12px 14px;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: #fbfdfb;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.step.active {
  background: var(--green-soft);
  color: var(--green-dark);
  border-color: rgba(22, 163, 74, 0.18);
}

label {
  display: block;
  margin-bottom: 8px;
  font-size: 14px;
  font-weight: 700;
}

select {
  width: 100%;
  padding: 15px 16px;
  border-radius: 16px;
  border: 1px solid var(--border);
  font-size: 1rem;
  background: #fff;
  color: var(--text);
  outline: none;
}

.help-box {
  margin-top: 18px;
  padding: 18px;
  background: #fbfdfb;
  border: 1px dashed var(--border);
  border-radius: 18px;
  color: var(--muted);
  line-height: 1.6;
}

.actions {
  display: flex;
  gap: 12px;
  margin-top: 20px;
  flex-wrap: wrap;
}

button {
  border: 0;
  border-radius: 16px;
  padding: 14px 18px;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  transition: transform .18s ease, opacity .18s ease, box-shadow .18s ease;
}

button:hover { transform: translateY(-1px); }

.primary {
  background: linear-gradient(135deg, var(--green) 0%, #22c55e 100%);
  color: white;
  box-shadow: 0 12px 30px rgba(22, 163, 74, 0.22);
}

.secondary {
  background: #fff;
  color: var(--text);
  border: 1px solid var(--border);
}

.result {
  display: none;
  animation: fade .35s ease;
}

.result.active { display: block; }

@keyframes fade {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

.segment-pill {
  display: inline-block;
  padding: 8px 14px;
  border-radius: 999px;
  background: var(--green-soft);
  color: var(--green-dark);
  font-size: 13px;
  font-weight: 800;
  margin-bottom: 14px;
}

.headline {
  font-size: clamp(1.8rem, 2.5vw, 2.6rem);
  margin: 0 0 10px;
  line-height: 1.08;
}

.explanation {
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.7;
  margin-bottom: 24px;
  max-width: 68ch;
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 22px;
}

.info-card {
  border: 1px solid var(--border);
  background: linear-gradient(180deg, #fff 0%, #f9fcfa 100%);
  border-radius: 20px;
  padding: 18px;
}

.info-card h3 {
  margin: 0 0 10px;
  font-size: 1rem;
}

.info-card p,
.info-card li {
  color: var(--muted);
  line-height: 1.6;
  font-size: .96rem;
}

ul {
  margin: 0;
  padding-left: 18px;
}

.flow {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin: 12px 0 24px;
}

.flow-step {
  padding: 18px;
  border-radius: 20px;
  background: #ffffff;
  border: 1px solid var(--border);
  position: relative;
}

.flow-step strong {
  display: block;
  margin-bottom: 6px;
  font-size: 15px;
}

.flow-step span {
  color: var(--muted);
  font-size: .95rem;
  line-height: 1.6;
}

.examples-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.example-box {
  padding: 18px;
  border: 1px solid var(--border);
  border-radius: 20px;
  background: #fff;
}

.example-box h4 {
  margin: 0 0 12px;
  font-size: 1rem;
}

.phrase {
  margin-top: 24px;
  padding: 18px 20px;
  border-radius: 20px;
  background: linear-gradient(135deg, rgba(22,163,74,.10), rgba(34,197,94,.08));
  border: 1px solid rgba(22,163,74,.16);
  font-weight: 700;
}

.footer-note {
  margin-top: 18px;
  font-size: 14px;
  color: var(--muted);
}

@media (max-width: 980px) {
  .hero,
  .layout,
  .cards,
  .flow,
  .examples-grid {
    grid-template-columns: 1fr;
  }
}