.page--datamine-contribute {
  --contrib-bg: var(--dm-bg, #0c0910);
  --contrib-surface: var(--dm-surface, #100d14);
  --contrib-surface-raised: var(--dm-surface-raised, #151119);
  --contrib-surface-subtle: #18141d;
  --contrib-border: var(--dm-border, rgba(255, 255, 255, 0.08));
  --contrib-border-hover: var(--dm-border-hover, rgba(245, 217, 122, 0.28));
  --contrib-text: #ded8e6;
  --contrib-strong: var(--dm-text-strong, #f4f0f6);
  --contrib-muted: #b4abbf;
  --contrib-gold: var(--dm-gold, #f5d97a);
  --contrib-violet: var(--dm-violet, #a77add);
  --contrib-pink: #ff9bb2;
  --contrib-teal: #4fe3c1;

  min-height: 100vh;
  display: flex;
  flex-direction: column;
  color: var(--contrib-text);
  font-family: var(--font-sans);
  background: var(--contrib-bg);
}

.contribute-layout {
  width: 100%;
  max-width: var(--dm-editorial-max, 1220px);
  flex: 1 0 auto;
  margin: 0 auto;
  padding: 28px 24px 48px;
}

/* Hero */
.contribute-hero {
  margin-bottom: 24px;
}

.contribute-hero__eyebrow {
  margin: 0 0 6px;
  color: var(--contrib-gold);
  font-family: var(--font-sans);
  font-size: 11px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.contribute-hero__title {
  margin: 0;
  color: var(--contrib-strong);
  font-family: "Spectral", Georgia, serif;
  font-size: clamp(28px, 3.2vw, 36px);
  font-weight: 500;
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.contribute-hero__subtitle {
  max-width: var(--dm-prose-max, 74ch);
  margin: 8px 0 0;
  color: var(--contrib-muted);
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 400;
  line-height: 1.5;
}

/* Tabs Navigation */
.contribute-tabs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-bottom: 24px;
}

.contribute-tab-button {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 2px;
  padding: 12px 16px;
  border: 1px solid var(--contrib-border);
  border-radius: var(--dm-radius-md, 8px);
  background: var(--contrib-surface);
  color: var(--contrib-strong);
  cursor: pointer;
  text-align: left;
  transition: all 0.16s ease;
  font-family: var(--font-sans);
}

.contribute-tab-button:hover {
  background: var(--contrib-surface-raised);
  border-color: var(--contrib-border-hover);
}

.contribute-tab-button.is-active {
  background: var(--contrib-surface-raised);
  border-color: var(--contrib-gold);
  box-shadow: 0 0 16px rgba(245, 217, 122, 0.08);
}

.contribute-tab-button__label {
  font-size: 13px;
  font-weight: 600;
  line-height: 1.2;
  color: var(--contrib-strong);
}

.contribute-tab-button__sub {
  font-family: var(--dm-font-mono, "JetBrains Mono", monospace);
  font-size: 10.5px;
  font-weight: 500;
  color: var(--contrib-muted);
}

.contribute-tab-button__sub--gold {
  color: var(--contrib-gold, #f5d97a);
}

.contribute-tab-button__sub--pink {
  color: var(--contrib-pink, #ff6b8b);
}

.contribute-tab-button__sub--teal {
  color: var(--contrib-teal, #4fe3c1);
}

/* Tab Panel & Content */
.contribute-panel {
  display: none;
  flex-direction: column;
  gap: 20px;
  animation: fadeIn 0.18s ease;
}

.contribute-panel.is-active {
  display: flex;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Card Block */
.contribute-card {
  padding: 18px 22px;
  border: 1px solid var(--contrib-border);
  border-radius: var(--dm-radius-md, 8px);
  background: var(--contrib-surface);
}

.contribute-card__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--contrib-border);
}

.contribute-card__title {
  margin: 0;
  font-size: 15px;
  font-weight: 700;
  color: var(--contrib-strong);
  letter-spacing: 0.02em;
}

.contribute-card__badge {
  padding: 2px 8px;
  border-radius: var(--dm-radius-xs, 4px);
  font-family: var(--dm-font-mono, "JetBrains Mono", monospace);
  font-size: 11px;
  font-weight: 600;
  background: rgba(245, 217, 122, 0.12);
  border: 1px solid rgba(245, 217, 122, 0.28);
  color: var(--contrib-gold);
}

.contribute-card__badge--pink {
  background: rgba(255, 107, 139, 0.12);
  border-color: rgba(255, 107, 139, 0.28);
  color: var(--contrib-pink);
}

.contribute-card__badge--teal {
  background: rgba(79, 227, 193, 0.12);
  border-color: rgba(79, 227, 193, 0.28);
  color: var(--contrib-teal);
}

.contribute-prose {
  font-size: 13px;
  line-height: 1.55;
  color: var(--contrib-text);
}

.contribute-prose p {
  max-width: var(--dm-prose-max, 74ch);
  margin: 0 0 8px;
}

.contribute-prose p:last-child {
  margin-bottom: 0;
}

/* Notice Box in Fix data */
.contribute-notice-box {
  padding: 10px 14px;
  margin: 10px 0 14px;
  border: 1px solid rgba(167, 122, 221, 0.25);
  border-radius: var(--dm-radius-sm, 6px);
  background: rgba(167, 122, 221, 0.05);
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--contrib-text);
}

.contribute-notice-box strong {
  color: var(--contrib-violet, #a77add);
}

.contribute-notice-box p {
  margin: 0 0 4px;
}

.contribute-notice-box p:last-child {
  margin: 0;
}

/* Steps List */
.contribute-steps {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin: 12px 0 0;
  padding: 0;
  list-style: none;
}

.contribute-step {
  display: grid;
  grid-template-columns: 26px 1fr;
  gap: 10px;
  align-items: start;
  padding: 10px 12px;
  border: 1px solid var(--contrib-border);
  border-radius: var(--dm-radius-sm, 6px);
  background: var(--contrib-surface-raised);
}

.contribute-step__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: rgba(245, 217, 122, 0.12);
  border: 1px solid rgba(245, 217, 122, 0.35);
  color: var(--contrib-gold);
  font-family: var(--dm-font-mono, "JetBrains Mono", monospace);
  font-size: 10.5px;
  font-weight: 700;
}

.contribute-step__content {
  font-size: 13px;
  line-height: 1.45;
  color: var(--contrib-text);
}

.contribute-step__content strong {
  color: var(--contrib-strong);
}

.contribute-step-time {
  color: var(--contrib-pink, #ff6b8b);
  font-weight: 600;
}

.contribute-step__code {
  display: block;
  margin-top: 5px;
  padding: 5px 8px;
  border-radius: var(--dm-radius-xs, 4px);
  background: #09060c;
  border: 1px solid rgba(255, 255, 255, 0.08);
  font-family: var(--dm-font-mono, "JetBrains Mono", monospace);
  font-size: 11px;
  color: var(--contrib-gold);
  word-break: break-all;
}

/* Guidance Matrix (Fix data tab) */
.contribute-guidance {
  display: grid;
  gap: 8px;
  margin-top: 12px;
}

.contribute-guidance-item {
  padding: 10px 12px;
  border: 1px solid var(--contrib-border);
  border-radius: var(--dm-radius-sm, 6px);
  background: var(--contrib-surface-raised);
}

.contribute-guidance-item__question {
  margin: 0 0 4px;
  font-size: 13px;
  font-weight: 700;
  color: var(--contrib-strong);
}

.contribute-guidance-item__answer {
  margin: 0;
  font-size: 12.5px;
  line-height: 1.45;
  color: var(--contrib-muted);
}

.contribute-guidance-item__answer strong {
  color: var(--contrib-gold);
}

/* Action Links */
.contribute-step__action {
  margin-top: 5px;
}

.contribute-action-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 2px;
  align-self: flex-start;
  color: var(--contrib-strong);
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
  transition: color 0.15s ease;
}

.contribute-action-arrow {
  color: var(--contrib-gold);
  font-family: var(--font-mono);
  font-size: 12px;
  transition: transform 0.15s ease;
}

.contribute-action-link:hover {
  color: var(--contrib-gold);
  text-decoration: none;
}

.contribute-action-link:hover .contribute-action-arrow {
  transform: translateX(3px);
}

/* Shared Bottom Sections */
.contribute-bottom-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 16px;
  margin-top: 32px;
  padding-top: 28px;
  border-top: 1px solid var(--contrib-border);
}

.contribute-subcard {
  padding: 20px 22px;
  border: 1px solid var(--contrib-border);
  border-radius: var(--dm-radius-md, 8px);
  background: var(--contrib-surface);
}

.contribute-subcard__title {
  margin: 0 0 8px;
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--contrib-gold);
}

.contribute-subcard__subtitle {
  margin: 0 0 12px;
  font-size: 12.5px;
  line-height: 1.45;
  color: var(--contrib-muted);
}

.contribute-checklist {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.contribute-checklist-item {
  display: grid;
  grid-template-columns: 16px 1fr;
  gap: 8px;
  align-items: baseline;
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--contrib-text);
}

.contribute-checklist-item__bullet {
  font-family: var(--dm-font-mono, monospace);
  font-size: 11px;
  font-weight: 700;
  color: var(--contrib-gold);
}

.contribute-checklist-item__label {
  font-weight: 600;
  color: var(--contrib-strong);
}

.contribute-contacts-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
}

.contribute-contact-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border: 1px solid var(--contrib-border);
  border-radius: var(--dm-radius-sm, 6px);
  background: var(--contrib-surface-raised);
  color: var(--contrib-text);
  font-family: var(--font-sans);
  font-size: 12px;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.15s ease;
}

.contribute-contact-btn:hover {
  border-color: var(--contrib-border-hover);
  background: var(--contrib-surface-subtle);
  color: var(--contrib-gold);
}

@media (max-width: 860px) {
  .contribute-bottom-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .contribute-tabs {
    grid-template-columns: 1fr;
  }
}