:root {
  --bg: #f6f7f9;
  --card: #ffffff;
  --text: #17212b;
  --muted: #667085;
  --border: #e4e7ec;
  --accent: #1769e0;
  --accent-dark: #0f55bd;
  --warning-bg: #fff8e6;
  --warning-border: #f2d38a;
  --radius: 16px;
}

* {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI",
    Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

.container {
  width: min(100% - 32px, 820px);
  margin: 0 auto;
  padding: 40px 0 64px;
}

header {
  margin-bottom: 36px;
}

h1 {
  margin: 0 0 16px;
  font-size: clamp(32px, 7vw, 50px);
  line-height: 1.08;
  letter-spacing: -0.03em;
}

h2 {
  margin-top: 0;
  line-height: 1.2;
}

.lead {
  font-size: 18px;
  color: var(--muted);
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  margin-top: 24px;
  box-shadow: 0 8px 30px rgba(16, 24, 40, 0.05);
}

label {
  display: block;
  margin-top: 20px;
  font-weight: 700;
}

input,
select {
  width: 100%;
  margin-top: 8px;
  padding: 14px 15px;
  border: 1px solid #cfd4dc;
  border-radius: 10px;
  background: #fff;
  color: var(--text);
  font: inherit;
  font-size: 16px;
}

input:focus,
select:focus {
  outline: 3px solid rgba(23, 105, 224, 0.15);
  border-color: var(--accent);
}

button,
.button {
  display: inline-block;
  width: 100%;
  margin-top: 24px;
  padding: 15px 18px;
  border: 0;
  border-radius: 11px;
  background: var(--accent);
  color: #fff;
  font: inherit;
  font-weight: 700;
  font-size: 17px;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
}

button:hover,
.button:hover {
  background: var(--accent-dark);
}

.result {
  display: none;
  margin-top: 24px;
  padding: 22px;
  background: #f8fafc;
  border: 1px solid var(--border);
  border-radius: 12px;
}

.price {
  margin: 12px 0;
  font-size: 28px;
  font-weight: 800;
}

.unknown {
  margin-top: 14px;
  padding: 15px;
  background: var(--warning-bg);
  border: 1px solid var(--warning-border);
  border-radius: 10px;
}

.meta,
.source,
.disclaimer {
  color: var(--muted);
  font-size: 14px;
}

.source {
  margin-top: 20px;
}

.disclaimer {
  margin-top: 30px;
}

a {
  color: var(--accent);
}

@media (max-width: 600px) {
  .container {
    width: min(100% - 24px, 820px);
    padding-top: 28px;
  }

  .card {
    padding: 19px;
  }

  h1 {
    font-size: 34px;
  }
}