:root {
  --pec-bg: #ffffff;
  --pec-soft: #f5f7fb;
  --pec-border: #dfe4ec;
  --pec-text: #172033;
  --pec-muted: #5f6b7a;
  --pec-accent: #155eef;
  --pec-accent-soft: #eef4ff;
  --pec-success: #067647;
  --pec-warning: #b54708;
  --pec-radius: 18px;
  --pec-shadow: 0 12px 32px rgba(16, 24, 40, 0.08);
}

.pec-calculator {
  box-sizing: border-box;
  max-width: 1040px;
  margin: 28px auto;
  padding: 0;
  overflow: hidden;
  background: var(--pec-bg);
  border: 1px solid var(--pec-border);
  border-radius: var(--pec-radius);
  box-shadow: var(--pec-shadow);
  color: var(--pec-text);
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.pec-calculator *, .pec-calculator *::before, .pec-calculator *::after { box-sizing: border-box; }

.pec-head {
  padding: 28px 30px 22px;
  background: linear-gradient(135deg, var(--pec-accent-soft), #fff 72%);
  border-bottom: 1px solid var(--pec-border);
}

.pec-eyebrow {
  margin: 0 0 6px !important;
  color: var(--pec-accent) !important;
  font-size: 12px !important;
  font-weight: 800 !important;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.pec-head h2 { margin: 0 0 8px !important; font-size: clamp(25px, 3vw, 36px) !important; line-height: 1.15 !important; }
.pec-head p { margin: 0 !important; color: var(--pec-muted) !important; font-size: 16px !important; }
.pec-body { padding: 28px 30px; }

.pec-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.pec-field { display: flex; flex-direction: column; gap: 7px; margin: 0; }
.pec-label { font-size: 14px; font-weight: 700; }
.pec-input-wrap { position: relative; display: flex; align-items: center; }
.pec-field input {
  width: 100%;
  min-height: 48px;
  padding: 11px 88px 11px 13px;
  border: 1px solid #cfd6e1;
  border-radius: 10px;
  background: #fff;
  color: var(--pec-text);
  font: inherit;
  font-size: 16px;
  outline: none;
  transition: border-color .2s, box-shadow .2s;
}
.pec-field input:focus { border-color: var(--pec-accent); box-shadow: 0 0 0 4px rgba(21, 94, 239, .12); }
.pec-suffix { position: absolute; right: 12px; color: var(--pec-muted); font-size: 13px; pointer-events: none; }
.pec-field small { color: var(--pec-muted); font-size: 12px; line-height: 1.4; }

.pec-results { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; margin-top: 26px; }
.pec-result-card { min-height: 110px; padding: 16px; border: 1px solid var(--pec-border); border-radius: 14px; background: var(--pec-soft); }
.pec-result-card span { display: block; margin-bottom: 10px; color: var(--pec-muted); font-size: 13px; font-weight: 600; }
.pec-result-card strong { display: block; color: var(--pec-text); font-size: 23px; line-height: 1.25; word-break: break-word; }
.pec-result-card:last-child { background: var(--pec-accent-soft); border-color: #c7d7fe; }

.pec-breakdown, .pec-recommendation {
  margin-top: 18px;
  padding: 15px 17px;
  border-radius: 12px;
  background: #f8fafc;
  border-left: 4px solid var(--pec-accent);
  color: var(--pec-text);
  font-size: 14px;
  line-height: 1.55;
}

.pec-recommendation[data-state="good"] { border-left-color: var(--pec-success); background: #ecfdf3; }
.pec-recommendation[data-state="warn"] { border-left-color: var(--pec-warning); background: #fff7ed; }

.pec-note, .pec-source { margin: 0 !important; padding: 0 30px 20px; color: var(--pec-muted) !important; font-size: 12px !important; line-height: 1.55; }
.pec-source { padding-top: 0; }
.pec-source a { color: var(--pec-accent); font-weight: 700; }

@media (max-width: 760px) {
  .pec-calculator { margin: 20px 0; border-radius: 14px; }
  .pec-head, .pec-body { padding-left: 18px; padding-right: 18px; }
  .pec-grid { grid-template-columns: 1fr; gap: 14px; }
  .pec-results { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .pec-note, .pec-source { padding-left: 18px; padding-right: 18px; }
}

@media (max-width: 430px) {
  .pec-results { grid-template-columns: 1fr; }
  .pec-result-card { min-height: 92px; }
}