.ai-switch {
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 36px;
  flex: 0 0 56px;
  gap: 5px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: transparent;
  color: var(--muted);
  padding: 0 9px;
  font: inherit;
  font-size: 12px;
  font-weight: 650;
  white-space: nowrap;
  cursor: pointer;
}
[data-ai-switch], .ai-wrap button { display: none; }
.site-interactive [data-ai-switch] { display: inline-flex; }
.site-interactive .ai-wrap button { display: inline-flex; }
html:not(.site-interactive) body[data-route="/ai"] .home-controls { display: none; }
.ai-switch svg { display: block; width: 16px; height: 16px; flex-shrink: 0; }
.ai-switch .ai-switch-label { display: block; }
.ai-switch:hover { color: var(--accent-strong); border-color: var(--accent-strong); }
.ai-switch[aria-checked="true"] { color: var(--accent-strong); border-color: var(--accent-strong); background: var(--selected); }
.review-bar .ai-switch { margin-left: auto; }
.ai-wrap { padding-bottom: 30px; }
.ai-hero { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: clamp(40px, 6vw, 100px); padding: 90px 24px 80px; align-items: center; }
.ai-hero h1 { font-size: clamp(44px, 5.5vw, 76px); line-height: 1.12; font-weight: 650; letter-spacing: -0.045em; margin: 25px 0 30px; }
.ai-hero h1 em { color: var(--accent-strong); font-style: normal; }
.ai-lead { font-size: 20px; line-height: 1.7; }
.ai-description, .ai-section-heading > p:last-child { color: var(--muted); line-height: 1.95; max-width: 700px; }
.ai-hero .buttons { margin-top: 30px; }
.ai-subnote { font-size: 12px; color: var(--subtle); line-height: 1.8; margin-top: 23px; }
.ai-flow { border: 1px solid var(--line); padding: 32px; border-radius: 12px; background: linear-gradient(145deg, var(--ground), var(--paper)); }
.ai-flow-label { margin: 0 0 28px; font-size: 12px; color: var(--subtle); letter-spacing: 0.1em; }
.ai-flow > div { padding: 23px 0 23px 42px; position: relative; border-top: 1px solid var(--line); }
.ai-flow > div > span { position: absolute; left: 0; top: 29px; font-size: 11px; color: var(--accent-strong); }
.ai-flow h3 { margin: 0 0 10px; font-size: 19px; font-weight: 500; }
.ai-flow > div p { color: var(--muted); font-size: 14px; line-height: 1.8; margin: 0; }
.ai-section { padding: 65px 24px; border-top: 1px solid var(--line); }
.ai-section h2, .ai-assistant h2 { font-size: clamp(27px, 3vw, 39px); font-weight: 500; letter-spacing: -0.025em; line-height: 1.35; margin: 16px 0 25px; }
.ai-resource-links { display: flex; flex-wrap: wrap; gap: 14px 25px; margin: 28px 0; font-size: 13px; }
.ai-resource-links a, .ai-case > a, .ai-assistant > a, .ai-check a { color: var(--accent-strong); text-underline-offset: 4px; }
.ai-steps, .ai-cases, .ai-routes { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 23px; }
.ai-step, .ai-case, .ai-routes > article { border: 1px solid var(--line); padding: 26px; border-radius: 8px; min-width: 0; }
.ai-number, .ai-routes > article > span { font-size: 11px; color: var(--accent-strong); letter-spacing: 0.08em; }
.ai-step h3, .ai-case h3, .ai-routes h3 { font-size: 21px; line-height: 1.5; font-weight: 500; margin: 19px 0 15px; }
.ai-step p, .ai-case blockquote, .ai-routes p { font-size: 14px; line-height: 1.9; color: var(--muted); }
.ai-step .button { margin: 12px 0 20px; }
.ai-wrap details { font-size: 12px; color: var(--muted); }
.ai-wrap summary { cursor: pointer; line-height: 1.7; }
.ai-wrap pre { white-space: pre-wrap; overflow-wrap: anywhere; background: var(--code-bg); padding: 16px; font-size: 12px; line-height: 1.8; color: var(--muted); border: 1px solid var(--line); border-radius: 5px; }
.ai-case blockquote { margin: 0 0 24px; }
.ai-case > a { display: inline-block; margin-top: 24px; font-size: 12px; }
.ai-case details .button { margin-top: 5px; }
.ai-routes > article { text-decoration: none; display: flex; flex-direction: column; }
.ai-routes > article:hover { border-color: var(--accent-strong); }
.ai-routes p { margin-bottom: 25px; }
.ai-routes article > a { font-size: 12px; color: var(--accent-strong); font-weight: 500; margin-top: auto; }
.ai-check { font-size: 14px; color: var(--muted); line-height: 1.9; margin-top: 30px; }
.ai-assistant { margin: 30px 24px; padding: 32px; background: var(--ground); border-radius: 8px; }
.ai-assistant p:not(.section-kicker) { max-width: 900px; font-size: 14px; color: var(--muted); line-height: 1.9; }
.ai-assistant > a { font-size: 13px; }
.ai-closing { text-align: center; padding: 50px 24px; }
.ai-closing .button { margin: 5px; }
.ai-closing p { color: var(--subtle); font-size: 12px; margin-top: 25px; }
@media (max-width: 1000px) {
  .ai-hero { gap: 32px; padding-top: 60px; }
  .ai-step, .ai-case, .ai-routes > article { padding: 22px; }
  .home-header .home-search { display: none; }
}
@media (max-width: 760px) {
  .ai-hero { grid-template-columns: 1fr; padding: 44px 6px; }
  .ai-hero h1 { font-size: clamp(42px, 9vw, 66px); }
  .ai-flow { padding: 24px; }
  .ai-section { padding: 44px 6px; }
  .ai-steps, .ai-cases, .ai-routes { grid-template-columns: 1fr; gap: 16px; }
  .ai-assistant { margin: 15px 6px; padding: 24px; }
  .review-bar { gap: 12px; }
}
@media (max-width: 480px) {
  .home-header .brand { font-size: 13px; }
  .home-controls { gap: 5px; }
  .review-bar > button { flex-shrink: 0; white-space: nowrap; }
  .review-bar > strong { max-width: 70px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
}