html, body {
  margin: 0;
  padding: 0;
  overflow-x: hidden;
}
:root {
  --bg: #f7f8f6;
  --card: #ffffff;
  --ink: #1f2937;
  --muted: #6b7280;
  --line: #e5e7eb;
  --green: #009966;
  --yellow: #ffcc33;
  --white: #ffffff;
  --soft-green: #eefbf6;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: Arial, Helvetica, sans-serif;
  background: linear-gradient(180deg, #f7f8f6 0%, #eef7f2 100%);
  color: var(--ink);
  line-height: 1.45;
}
.wrap {
  max-width: 1120px;
  margin: 0 auto;
  padding: 28px 18px 40px;
}
.hero { margin-bottom: 20px; }
h1 {
  margin: 0 0 8px;
  font-size: 32px;
  line-height: 1.15;
}
.sub {
  color: var(--muted);
  max-width: 760px;
  font-size: 15px;
}
.grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 22px;
  align-items: start;
}
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 22px;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.06);
}
.section-title {
  margin: 0 0 14px;
  font-size: 20px;
}
.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}
.full { grid-column: 1 / -1; }
label {
  display: block;
  margin-bottom: 6px;
  font-size: 14px;
  font-weight: 700;
}
input, select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px 13px;
  font-size: 14px;
  background: #fff;
  color: var(--ink);
  outline: none;
  transition: border-color .2s ease, box-shadow .2s ease;
}
input:focus, select:focus {
  border-color: var(--green);
  box-shadow: 0 0 0 4px rgba(0, 153, 102, 0.12);
}
.hint {
  margin-top: 6px;
  font-size: 12px;
  color: var(--muted);
}
.checks {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px 14px;
  margin-top: 2px;
}
.check {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 500;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
  margin: 0;
}
.check input {
  width: auto;
  margin: 0;
  accent-color: var(--green);
}
.btns {
  display: flex;
  gap: 12px;
  margin-top: 20px;
  flex-wrap: wrap;
}
button {
  border: 0;
  border-radius: 12px;
  padding: 13px 18px;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  color: var(--white);
  transition: transform .15s ease, opacity .15s ease, box-shadow .15s ease;
  box-shadow: 0 8px 20px rgba(15, 23, 42, 0.08);
}
button:hover { transform: translateY(-1px); opacity: 0.96; }
button:disabled { opacity: .65; cursor: wait; transform: none; }
.primary { background: var(--green); }
.secondary { background: var(--yellow); }
.result-box { background: linear-gradient(180deg, #ffffff 0%, #f8fffc 100%); }
.result-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 999px;
  background: var(--soft-green);
  color: var(--green);
  font-size: 12px;
  font-weight: 700;
  margin-bottom: 14px;
}
.price-card {
  border: 1px solid #d8efe6;
  border-radius: 18px;
  background: #ffffff;
  padding: 18px;
  margin-bottom: 14px;
}
.price-label {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
  margin-bottom: 6px;
  font-weight: 700;
}
.price-value {
  font-size: 34px;
  line-height: 1.1;
  font-weight: 800;
  color: var(--green);
  word-break: break-word;
}
.price-sub {
  color: var(--muted);
  margin-top: 6px;
  font-size: 13px;
}
.summary {
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 16px;
  background: #fcfcfc;
}
.summary-title {
  font-size: 15px;
  font-weight: 800;
  margin-bottom: 10px;
}
.summary-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px 14px;
  font-size: 14px;
}
.summary-item {
  border-bottom: 1px dashed #e7eaef;
  padding-bottom: 8px;
}
.summary-item b {
  display: block;
  font-size: 12px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 4px;
}
.error, .success {
  display: none;
  margin-bottom: 14px;
  padding: 13px 14px;
  border-radius: 14px;
  font-size: 14px;
}
.error {
  background: #fff4f4;
  border: 1px solid #ffcaca;
  color: #b42318;
}
.success {
  background: #f0fdf4;
  border: 1px solid #bbf7d0;
  color: #166534;
}
.footer-note {
  margin-top: 14px;
  color: var(--muted);
  font-size: 12px;
}
@media (max-width: 920px) {
  .grid, .form-grid, .checks, .summary-grid { grid-template-columns: 1fr; }
  .wrap { padding: 18px 14px 28px; }
  h1 { font-size: 28px; }
  .price-value { font-size: 30px; }
}