.oil-page {
  width: min(1180px, 100%);
  margin: 0 auto;
  min-height: 100vh;
  padding: 28px 20px 56px;
  display: grid;
  gap: 18px;
}

.oil-hero,
.oil-controls,
.oil-card,
.oil-panel {
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.oil-hero {
  padding: 24px;
  display: grid;
  gap: 16px;
}

.oil-brand {
  width: fit-content;
}

.oil-brand img {
  width: 112px;
  height: auto;
}

.oil-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.oil-nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.94rem;
}

.oil-nav a:hover {
  color: var(--ink);
}

.oil-hero-copy {
  display: grid;
  gap: 12px;
}

.oil-eyebrow {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.oil-hero h1,
.oil-controls h2,
.oil-panel h2 {
  margin: 0;
  letter-spacing: -0.04em;
  line-height: 0.98;
}

.oil-hero h1 {
  max-width: 12ch;
  font-size: clamp(2.2rem, 4.6vw, 3.7rem);
}

.oil-subhead,
.oil-controls p,
.oil-panel p,
.oil-card-meta,
.oil-detail-list dd,
.oil-table td,
.oil-table th {
  color: var(--muted);
}

.oil-subhead,
.oil-controls p,
.oil-panel p,
.oil-detail-list dd {
  margin: 0;
  line-height: 1.65;
}

.oil-controls {
  padding: 22px;
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(320px, 0.8fr);
  gap: 20px;
  align-items: start;
}

.oil-control-copy {
  display: grid;
  gap: 10px;
}

.oil-form {
  display: grid;
  gap: 10px;
}

.oil-form label {
  font-weight: 600;
}

.oil-form-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto auto;
  gap: 10px;
  align-items: center;
}

.oil-results {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.oil-card {
  padding: 20px;
  display: grid;
  gap: 8px;
}

.oil-card-strong {
  background: var(--surface-strong);
}

.oil-card-label {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.oil-card-value {
  margin: 0;
  font-size: clamp(1.9rem, 4vw, 2.6rem);
  line-height: 1;
  letter-spacing: -0.05em;
}

.oil-card-meta {
  margin: 0;
  font-size: 0.95rem;
}

.oil-detail-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 16px;
}

.oil-panel {
  padding: 22px;
  display: grid;
  gap: 14px;
}

.oil-detail-list {
  margin: 0;
  display: grid;
  gap: 12px;
}

.oil-detail-list div {
  display: grid;
  gap: 4px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}

.oil-detail-list div:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.oil-detail-list dt {
  color: var(--muted);
  font-size: 0.9rem;
}

.oil-detail-list dd {
  margin: 0;
  color: var(--ink);
  font-weight: 600;
}

.oil-table {
  width: 100%;
  border-collapse: collapse;
}

.oil-table th,
.oil-table td {
  padding: 10px 0;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--border);
  word-break: break-word;
}

.oil-table th {
  color: var(--ink);
  font-size: 0.9rem;
  font-weight: 600;
}

.oil-table tbody tr:last-child td {
  border-bottom: 0;
}

.oil-method {
  gap: 10px;
}

@media (max-width: 980px) {
  .oil-controls,
  .oil-detail-grid,
  .oil-results {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .oil-page {
    padding: 18px 14px 44px;
  }

  .oil-hero,
  .oil-controls,
  .oil-card,
  .oil-panel {
    padding: 18px;
  }

  .oil-form-row,
  .oil-nav {
    grid-template-columns: 1fr;
    display: grid;
  }
}