.hero {
  min-height: 88vh;
  display: grid;
  align-items: center;
  border-bottom: 1px solid var(--line);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: var(--space-6);
  align-items: center;
}

.visual-panel {
  aspect-ratio: 16 / 10;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background:
    radial-gradient(circle at 62% 32%, rgba(142, 200, 255, 0.3), transparent 28%),
    radial-gradient(circle at 30% 65%, rgba(255, 255, 255, 0.08), transparent 36%),
    linear-gradient(160deg, #0d0d0d 0%, #121212 46%, #1b2531 100%);
  box-shadow: inset 0 0 70px rgba(0, 0, 0, 0.75);
  position: relative;
  overflow: hidden;
}

.visual-panel::after {
  content: "Render Placeholder";
  position: absolute;
  right: 14px;
  bottom: 12px;
  font-size: 0.66rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #b0b0b0;
}

.panel,
.card {
  background: linear-gradient(180deg, rgba(17, 17, 17, 0.92), rgba(10, 10, 10, 0.92));
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.panel { padding: var(--space-4); }

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

.list-clean {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: var(--space-2);
}

.list-clean li {
  padding-left: 1.15rem;
  position: relative;
  color: var(--text-dim);
}

.list-clean li::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 0;
  background: #f2f2f2;
  position: absolute;
  top: 0.58rem;
  left: 0;
}

.grid-tiles {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-4);
}

.card {
  padding: var(--space-4);
  min-height: 220px;
}

.card h3 { margin-bottom: var(--space-2); }

.card .link-line {
  margin-top: var(--space-3);
  display: inline-flex;
  color: var(--text);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.72rem;
  border-bottom: 1px solid currentColor;
}

.process-diagram {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-3);
  margin-top: var(--space-4);
}

.step {
  border: 1px solid var(--line);
  border-radius: 0;
  background: rgba(15, 15, 15, 0.86);
  padding: var(--space-3);
}

.step .num {
  display: inline-block;
  font-size: 0.66rem;
  color: var(--accent-2);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  margin-bottom: 0.4rem;
}

.timeline {
  border-left: 1px solid #5c5c5c;
  margin-left: 0.5rem;
  padding-left: var(--space-4);
  display: grid;
  gap: var(--space-4);
}

.timeline-item { position: relative; }

.timeline-item::before {
  content: "";
  position: absolute;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--text);
  left: calc(-1 * var(--space-4) - 6px);
  top: 0.35rem;
}

.compare {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3);
}

.campaign-form-panel {
  padding: 24px;
}

label { display: grid; gap: 0.35rem; color: var(--text-dim); font-size: 0.92rem; }

input,
textarea,
select {
  width: 100%;
  background: #0d0d0d;
  color: var(--text);
  border: 1px solid var(--line);
  border-radius: 0;
  padding: 0.72rem;
  font: inherit;
}

input[aria-invalid="true"],
textarea[aria-invalid="true"],
select[aria-invalid="true"] {
  border-color: var(--danger);
}

.error { color: var(--danger); font-size: 0.84rem; }

.success-box {
  margin-top: var(--space-4);
  padding: var(--space-3);
  border: 1px solid #3f5f75;
  border-radius: 0;
  background: rgba(49, 77, 97, 0.2);
  color: #d6e6f5;
}

.resource-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-4);
}

.code-box {
  background: #0c0c0c;
  border: 1px solid var(--line);
  border-radius: 0;
  padding: var(--space-3);
  overflow-x: auto;
}

@media (max-width: 980px) {
  .hero-grid,
  .split,
  .compare { grid-template-columns: 1fr; }
  .process-diagram { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid-tiles,
  .resource-grid,
  .form-grid { grid-template-columns: 1fr; }
}

@media (max-width: 620px) {
  .process-diagram { grid-template-columns: 1fr; }
}