.ec-page {
  padding-bottom: 4rem;
}

.ec-page [hidden] {
  display: none !important;
}

.ec-hero {
  padding-top: 7.5rem;
  padding-bottom: 2.5rem;
}

.ec-lead {
  margin: 1rem 0 0;
  color: var(--muted);
  line-height: 1.85;
}

.ec-panel {
  margin-top: 1.5rem;
  border-radius: 1.5rem;
  border: 2px solid var(--foreground);
  background: var(--card);
  padding: 1.35rem 1.2rem 1.5rem;
  box-shadow: 4px 4px 0 0 var(--foreground);
}

.ec-panel h2,
.ec-seo h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 900;
}

.ec-note {
  margin: 0.65rem 0 0;
  font-size: 0.8125rem;
  line-height: 1.7;
  color: var(--muted);
}

.ec-presets {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1rem;
}

.ec-preset {
  display: inline-flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.1rem;
  min-height: 3rem;
  border-radius: 0.9rem;
  border: 2px solid var(--foreground);
  background: var(--background);
  padding: 0.45rem 0.75rem;
  cursor: pointer;
}

.ec-preset span {
  font-size: 0.875rem;
  font-weight: 700;
}

.ec-preset small {
  font-size: 0.7rem;
  color: var(--muted);
}

.ec-preset.is-active,
.ec-preset:hover {
  background: color-mix(in oklch, var(--pop) 42%, var(--card));
}

.ec-form {
  display: grid;
  gap: 1rem;
  margin-top: 1.15rem;
}

.ec-field label {
  display: block;
  font-size: 0.875rem;
  font-weight: 700;
}

.ec-input-row {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: stretch;
  margin-top: 0.4rem;
}

.ec-input-row input {
  width: 100%;
  min-height: 3rem;
  border-radius: 0.9rem 0 0 0.9rem;
  border: 2px solid var(--foreground);
  border-right: 0;
  background: var(--background);
  padding: 0.7rem 0.9rem;
  font-size: 1rem;
}

.ec-input-plain {
  grid-template-columns: 1fr;
}

.ec-input-plain input {
  border-radius: 0.9rem;
  border-right: 2px solid var(--foreground);
}

.ec-unit {
  display: flex;
  min-width: 4.6rem;
  align-items: center;
  justify-content: center;
  border-radius: 0 0.9rem 0.9rem 0;
  border: 2px solid var(--foreground);
  background: var(--secondary);
  padding: 0 0.8rem;
  font-size: 0.8125rem;
  font-weight: 700;
}

.ec-error {
  min-height: 1.2rem;
  margin: 0.35rem 0 0;
  font-size: 0.75rem;
  color: oklch(0.52 0.18 25);
}

.ec-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 0.25rem;
}

.ec-actions .btn-pop {
  min-height: 3rem;
  width: 100%;
}

#ec-results {
  margin-top: 2rem;
}

.ec-results {
  display: grid;
  gap: 0.75rem;
  margin-top: 1.1rem;
}

.ec-result-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  border-radius: 1rem;
  border: 2px solid var(--foreground);
  background: var(--background);
  padding: 0.85rem 1rem;
}

.ec-result-row dt {
  margin: 0;
  font-size: 0.875rem;
  font-weight: 700;
}

.ec-result-row dd {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 900;
}

.ec-always {
  margin-top: 1.1rem;
  border-radius: 1rem;
  border: 2px dashed var(--foreground);
  background: color-mix(in oklch, var(--pop-3) 22%, var(--card));
  padding: 1rem 1.05rem;
}

.ec-always p {
  margin: 0;
  line-height: 1.75;
}

.ec-always strong {
  font-family: var(--font-display);
}

.ec-compare-grid {
  display: grid;
  gap: 1rem;
  margin-top: 1rem;
}

.ec-compare-card {
  border-radius: 1.15rem;
  border: 2px solid var(--foreground);
  background: var(--background);
  padding: 1rem;
}

.ec-compare-card h3 {
  margin: 0 0 0.85rem;
  font-family: var(--font-display);
  font-size: 1.05rem;
}

.ec-compare-results {
  display: grid;
  gap: 0.75rem;
  margin-top: 1rem;
}

.ec-diff {
  margin: 0.25rem 0 0;
  border-radius: 1rem;
  background: color-mix(in oklch, var(--pop) 30%, var(--card));
  border: 2px solid var(--foreground);
  padding: 0.9rem 1rem;
  font-weight: 700;
  line-height: 1.7;
}

.ec-ad {
  display: flex;
  min-height: 5.5rem;
  align-items: center;
  justify-content: center;
  margin: 2rem 0 0;
  border: 1px dashed color-mix(in oklch, var(--foreground) 35%, transparent);
  border-radius: 0.9rem;
  background: color-mix(in oklch, var(--secondary) 80%, var(--card));
  color: var(--muted);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
}

.ec-seo {
  margin-top: 2.5rem;
}

.ec-seo h2 {
  margin-top: 2.25rem;
}

.ec-seo h3 {
  margin: 1.5rem 0 0;
  font-family: var(--font-display);
  font-size: 1.05rem;
}

.ec-seo p,
.ec-seo li {
  margin-top: 0.85rem;
  line-height: 1.85;
}

.ec-seo ul,
.ec-seo ol {
  margin: 0.75rem 0 0;
  padding-left: 1.25rem;
}

.ec-formula {
  margin-top: 1rem;
  border-radius: 1rem;
  border: 2px solid var(--foreground);
  background: var(--background);
  padding: 0.95rem 1.05rem;
  font-size: 0.875rem;
  line-height: 1.8;
}

.ec-page .faq-list {
  margin-top: 1.25rem;
}

@media (min-width: 720px) {
  .ec-panel {
    padding: 1.75rem 1.75rem 1.85rem;
  }

  .ec-form {
    grid-template-columns: 1fr 1fr;
  }

  .ec-actions,
  .ec-form > .ec-compare-grid {
    grid-column: 1 / -1;
  }

  .ec-actions .btn-pop {
    width: auto;
    min-width: 12rem;
  }

  .ec-results {
    grid-template-columns: 1fr 1fr;
  }

  .ec-compare-grid {
    grid-template-columns: 1fr 1fr;
  }
}