/* ====== AI Section ====== */

.ai-section {
  padding: 120px 0;
  background: linear-gradient(180deg, var(--bg) 0%, var(--accent-tint) 100%);
  border-top: 1px solid var(--line);
  position: relative;
  overflow: hidden;
}
.ai-section::before {
  content: "";
  position: absolute;
  top: -200px; right: -200px;
  width: 600px; height: 600px;
  background: radial-gradient(circle, color-mix(in oklab, var(--accent) 18%, transparent), transparent 70%);
  pointer-events: none;
}

.ai-eyebrow-row {
  white-space: nowrap;
  display: inline-flex; align-items: center; gap: 12px;
  padding: 8px 16px;
  border: 1px solid color-mix(in oklab, var(--accent) 30%, transparent);
  border-radius: 999px;
  background: color-mix(in oklab, var(--accent) 8%, var(--bg));
  position: relative;
}
.ai-pulse {
  width: 8px; height: 8px; border-radius: 999px;
  background: var(--accent);
  box-shadow: 0 0 0 0 color-mix(in oklab, var(--accent) 50%, transparent);
  animation: pulse 1.6s var(--ease) infinite;
}

/* LLM marquee */
.ai-llm-row {
  display: flex;
  align-items: center;
  gap: 24px;
  margin-top: 56px;
  padding: 20px 24px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--bg);
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
}
.ai-llm-row-label {
  font-size: 12px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 500;
  white-space: nowrap;
}
.ai-llm-row-pills {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  flex: 1;
}
.ai-llm-pill {
  white-space: nowrap;
  padding: 6px 12px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--fg);
  background: var(--bg-elev);
  font-weight: 500;
}

/* Feature grid */
.ai-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0;
  margin-top: 64px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--bg);
  overflow: hidden;
  position: relative;
  z-index: 1;
}
@media (max-width: 880px) {
  .ai-grid { grid-template-columns: 1fr; }
}
.ai-card {
  padding: 36px 32px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.ai-card:nth-child(2n) { border-right: 0; }
.ai-card:nth-last-child(-n+2) { border-bottom: 0; }
@media (max-width: 880px) {
  .ai-card { border-right: 0; }
  .ai-card:nth-last-child(-n+2) { border-bottom: 1px solid var(--line); }
  .ai-card:last-child { border-bottom: 0; }
}
.ai-card-tag {
  white-space: nowrap;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--accent);
  font-weight: 500;
  text-transform: uppercase;
  font-family: var(--font-mono);
  display: inline-block;
  align-self: flex-start;
  padding: 4px 10px;
  border: 1px solid color-mix(in oklab, var(--accent) 30%, transparent);
  border-radius: 999px;
  background: color-mix(in oklab, var(--accent) 8%, var(--bg));
}
.ai-card-title {
  font-size: 26px;
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin: 4px 0 0;
}
.ai-card-desc {
  font-size: 15px;
  line-height: 1.55;
  color: var(--fg-muted);
  margin: 0;
}
.ai-card-stats {
  display: flex;
  gap: 24px;
  margin-top: 8px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}
.ai-card-stat-k {
  font-family: var(--font-serif);
  font-size: 28px;
  font-weight: 500;
  letter-spacing: -0.02em;
  color: var(--accent);
  line-height: 1;
}
.ai-card-stat-v {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--fg-muted);
  margin-top: 6px;
}

/* Workflow strip */
.ai-workflow {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr auto 1fr;
  align-items: stretch;
  gap: 16px;
  margin-top: 80px;
  position: relative;
  z-index: 1;
}
@media (max-width: 1080px) {
  .ai-workflow {
    grid-template-columns: 1fr;
  }
  .ai-workflow-arrow { display: none; }
}
.ai-workflow-step {
  padding: 24px;
  border: 1px solid var(--line-strong);
  border-radius: var(--r-md);
  background: var(--bg);
}
.ai-workflow-step.is-ai {
  background: var(--fg);
  color: var(--fg-inverse);
  border-color: var(--fg);
  position: relative;
}
.ai-workflow-step.is-ai::after {
  content: "AI";
  position: absolute;
  top: 12px; right: 12px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  color: var(--accent);
  border: 1px solid var(--accent);
  padding: 2px 6px;
  border-radius: 4px;
  font-weight: 600;
}
.ai-workflow-num {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--fg-subtle);
  margin-bottom: 10px;
}
.ai-workflow-step.is-ai .ai-workflow-num { color: var(--accent); }
.ai-workflow-title {
  font-size: 18px;
  font-weight: 500;
  letter-spacing: -0.01em;
  margin-bottom: 8px;
}
.ai-workflow-desc {
  font-size: 13px;
  line-height: 1.5;
  color: var(--fg-muted);
}
.ai-workflow-step.is-ai .ai-workflow-desc { color: color-mix(in oklab, var(--fg-inverse) 70%, transparent); }
.ai-workflow-arrow {
  align-self: center;
  font-family: var(--font-mono);
  font-size: 20px;
  color: var(--fg-subtle);
}