.ai-page {
  --ai-line: rgba(144, 166, 202, 0.16);
  --ai-panel: rgba(14, 17, 23, 0.86);
}

.ai-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(280px, 0.65fr);
  gap: clamp(2rem, 7vw, 6rem);
  align-items: center;
  padding: clamp(5rem, 10vw, 8.5rem) 0 clamp(3rem, 7vw, 5.5rem);
  border-bottom: 1px solid var(--ai-line);
}

.ai-hero h1 {
  max-width: 760px;
  margin: 1rem 0 1.25rem;
  font-size: clamp(2.8rem, 7vw, 5.8rem);
  line-height: 0.96;
  letter-spacing: -0.065em;
}

.ai-hero > div > p:not(.eyebrow) {
  max-width: 680px;
  color: var(--muted);
  font-size: clamp(1rem, 2vw, 1.2rem);
  line-height: 1.75;
}

.ai-contract {
  position: relative;
  overflow: hidden;
  padding: 1.6rem;
  border: 1px solid rgba(104, 141, 255, 0.28);
  background: linear-gradient(145deg, rgba(104, 141, 255, 0.09), var(--ai-panel));
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.28);
}

.ai-contract::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 2px;
  background: linear-gradient(var(--accent), var(--accent-strong));
}

.ai-contract > p,
.ai-contract dt,
.ai-contract dd,
.ai-entry-grid code,
.ai-model-grid code,
.ai-collection-list span {
  font-family: "JetBrains Mono", monospace;
}

.ai-contract > p {
  margin: 0 0 1.2rem;
  color: var(--accent);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
}

.ai-contract dl { margin: 0; }
.ai-contract dl div { display: flex; justify-content: space-between; gap: 1rem; padding: 0.72rem 0; border-top: 1px solid var(--ai-line); }
.ai-contract dt { color: var(--subtle); font-size: 0.75rem; }
.ai-contract dd { margin: 0; color: var(--text); font-size: 0.78rem; text-align: right; }

.ai-entry-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border-bottom: 1px solid var(--ai-line);
}

.ai-entry-grid a {
  display: flex;
  min-height: 180px;
  padding: 1.5rem;
  color: inherit;
  text-decoration: none;
  flex-direction: column;
  border-right: 1px solid var(--ai-line);
  transition: background 160ms ease, transform 160ms ease;
}

.ai-entry-grid a:last-child { border-right: 0; }
.ai-entry-grid a:hover { background: rgba(104, 141, 255, 0.06); transform: translateY(-2px); }
.ai-entry-grid code { color: var(--accent); font-size: 0.75rem; }
.ai-entry-grid strong { margin-top: auto; font-size: 1.05rem; }
.ai-entry-grid span { margin-top: 0.45rem; color: var(--subtle); font-size: 0.86rem; line-height: 1.55; }

.ai-section { border-bottom: 1px solid var(--ai-line); }

.ai-steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
  padding: 0;
  list-style: none;
}

.ai-steps li,
.ai-model-grid article {
  padding: 1.4rem;
  border: 1px solid var(--ai-line);
  background: var(--ai-panel);
}

.ai-steps li > span { display: block; margin-bottom: 2.8rem; color: var(--accent); font-family: "JetBrains Mono", monospace; font-size: 0.72rem; }
.ai-steps strong { display: block; margin-bottom: 0.5rem; }
.ai-steps p,
.ai-model-grid p { margin: 0; color: var(--subtle); font-size: 0.9rem; line-height: 1.65; }

.ai-model-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1rem; }
.ai-model-grid code { color: var(--accent-strong); font-size: 0.7rem; }
.ai-model-grid h3 { margin: 2.5rem 0 0.6rem; font-size: 1.05rem; }

.ai-collection-list { border-top: 1px solid var(--ai-line); }
.ai-collection-list article { display: grid; grid-template-columns: minmax(230px, 0.8fr) minmax(300px, 1.5fr) auto; gap: 2rem; align-items: center; padding: 1.6rem 0; border-bottom: 1px solid var(--ai-line); }
.ai-collection-list article > div { display: flex; flex-direction: column; gap: 0.45rem; }
.ai-collection-list span { color: var(--accent); font-size: 0.69rem; }
.ai-collection-list strong { font-size: 0.93rem; }
.ai-collection-list p { margin: 0; color: var(--muted); line-height: 1.6; }
.ai-collection-list nav { display: flex; gap: 0.55rem; flex-wrap: wrap; justify-content: flex-end; }
.ai-collection-list nav a { padding: 0.5rem 0.7rem; border: 1px solid var(--ai-line); color: var(--muted); font-size: 0.78rem; text-decoration: none; }
.ai-collection-list nav a:hover { border-color: var(--accent); color: var(--text); }

.ai-warning {
  display: grid;
  grid-template-columns: minmax(240px, 0.8fr) minmax(0, 1.2fr);
  gap: 4rem;
  margin-bottom: 5rem;
  border: 1px solid rgba(241, 164, 84, 0.28);
  background: linear-gradient(110deg, rgba(241, 164, 84, 0.075), transparent 65%);
}

.ai-warning h2 { margin: 0.5rem 0 0; }
.ai-warning > p { margin: 0; color: var(--muted); line-height: 1.8; }

@media (max-width: 900px) {
  .ai-hero { grid-template-columns: 1fr; }
  .ai-entry-grid,
  .ai-steps,
  .ai-model-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .ai-entry-grid a:nth-child(2) { border-right: 0; }
  .ai-entry-grid a:nth-child(-n + 2) { border-bottom: 1px solid var(--ai-line); }
  .ai-collection-list article { grid-template-columns: 1fr; gap: 1rem; }
  .ai-collection-list nav { justify-content: flex-start; }
}

@media (max-width: 580px) {
  .ai-hero { padding-top: 3.5rem; }
  .ai-entry-grid,
  .ai-steps,
  .ai-model-grid,
  .ai-warning { grid-template-columns: 1fr; }
  .ai-entry-grid a { min-height: 145px; border-right: 0; border-bottom: 1px solid var(--ai-line); }
  .ai-entry-grid a:last-child { border-bottom: 0; }
  .ai-warning { gap: 1.5rem; }
}