.ai-hero{
  position:relative;
  overflow-x:clip;
  max-width:100%;
  padding-top:64px;
  padding-bottom:84px;
  background:
    radial-gradient(68vw 58vw at 92% -8%,rgba(var(--accent-rgb),.09),transparent 66%),
    radial-gradient(42vw 36vw at 8% 105%,rgba(var(--accent-bright-rgb),.05),transparent 72%);
}
.ai-hero::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:radial-gradient(rgba(var(--accent-rgb),.14) 1px,transparent 1.2px);
  background-size:22px 22px;
  opacity:.16;
  mask-image:linear-gradient(90deg,transparent 38%,var(--text));
}
.ai-hero-layout{
  position:relative;
  z-index:1;
  display:grid;
  grid-template-columns:minmax(0,44fr) minmax(0,56fr);
  gap:70px;
  align-items:center;
}
.ai-hero-copy h1{margin-top:18px}
.ai-hero-lede{
  max-width:38em;
  margin-top:22px;
  color:var(--text-muted);
  font-size:19px;
  line-height:1.75;
}
.ai-trust-list{
  display:flex;
  flex-wrap:wrap;
  gap:8px 18px;
  margin-top:20px;
  color:var(--text-muted);
  font-size:14px;
  font-weight:650;
}
.ai-trust-list li{
  display:inline-flex;
  align-items:center;
  gap:7px;
}
.ai-trust-list li::before{
  content:"✓";
  color:var(--accent);
  font-weight:800;
}
.ai-workbench{
  overflow:hidden;
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  background:var(--bg-panel);
  box-shadow:inset 0 0 0 1px var(--highlight),var(--shadow-window);
  transform:rotate(-1deg);
}
.ai-workbench-head,
.ai-workbench-foot{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:13px 16px;
}
.ai-workbench-head{border-bottom:1px solid var(--border)}
.ai-workbench-foot{
  border-top:1px solid var(--border);
  background:var(--bg-panel-2);
  color:var(--text-muted);
  font-family:var(--font-mono);
  font-size:11px;
}
.ai-workbench-foot span,
.ai-workbench-title{
  display:inline-flex;
  align-items:center;
  gap:8px;
}
.ai-workbench-title{font-size:14px;font-weight:800}
.ai-flow{
  display:grid;
  grid-template-columns:minmax(118px,1fr) minmax(100px,1.25fr) minmax(118px,1fr);
  gap:8px;
  align-items:center;
  padding:34px 24px 28px;
  background:linear-gradient(180deg,rgba(var(--accent-bright-rgb),.05),transparent);
}
.ai-flow-source{
  display:grid;
  justify-items:center;
  padding:18px 12px;
  border:1px solid var(--border);
  border-radius:var(--radius);
  background:var(--bg);
  box-shadow:inset 0 0 0 1px var(--highlight);
  text-align:center;
}
.ai-flow-icon{
  display:grid;
  width:50px;
  height:50px;
  place-items:center;
  border-radius:var(--radius);
  background:var(--bg-panel-2);
}
.ai-flow-source strong{margin-top:10px;font-size:14px}
.ai-flow-source small{margin-top:2px;color:var(--text-muted);font-size:10px}
.ai-flow-lines{width:100%;height:auto}
.ai-flow-targets{display:grid;gap:10px}
.ai-flow-targets span{
  padding:9px 10px;
  border:1px solid var(--border);
  border-radius:var(--radius-sm);
  background:var(--bg-panel-2);
  color:var(--accent-dark);
  font-size:12px;
  font-weight:750;
  text-align:center;
}
.ai-tool-strip{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  padding:0 24px 26px;
}
.ai-tool-strip span,
.ai-route-chips span,
.ai-platform-line span:not(.support-label){
  display:inline-flex;
  min-height:28px;
  align-items:center;
  padding:3px 10px;
  border:1px solid var(--border);
  border-radius:var(--radius-pill);
  background:var(--bg-panel);
  color:var(--text-muted);
  font-size:12px;
  font-weight:700;
}
.ai-principle-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:16px;
}
.ai-principle-card{
  min-height:236px;
  padding:26px;
  border:1px solid var(--border);
  border-radius:var(--radius);
  background:var(--bg-panel-2);
  box-shadow:inset 0 0 0 1px var(--highlight);
  transition:transform .2s var(--ease-out),box-shadow .2s var(--ease-out);
}
.ai-principle-card:hover{transform:translateY(-2px)}
.ai-principle-wide{
  grid-column:span 2;
  background:var(--bg-panel);
  box-shadow:inset 0 0 0 1px var(--highlight),var(--shadow-card);
}
.ai-card-index,
.ai-stage-mark{
  color:var(--accent);
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:800;
  letter-spacing:.08em;
}
.ai-principle-card h3{
  display:flex;
  align-items:center;
  gap:9px;
  margin-top:12px;
}
.ai-principle-card p{margin-top:14px;color:var(--text-muted)}
.ai-mini-panel{
  display:flex;
  align-items:center;
  gap:10px;
  margin-top:24px;
  padding:14px;
  border:1px solid var(--border);
  border-radius:var(--radius);
  background:var(--bg);
}
.ai-mini-panel span{
  padding:5px 9px;
  border-radius:var(--radius-sm);
  background:var(--bg-panel);
  color:var(--accent-dark);
  font-size:12px;
  font-weight:750;
}
.ai-mini-panel i{
  height:1px;
  min-width:22px;
  flex:1;
  background:var(--border);
}
.ai-route-chips{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin-top:24px;
}
.ai-table-note{margin-top:20px}
.ai-stage-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:18px;
}
.ai-stage-card{
  padding:28px;
  border:1px solid var(--border);
  border-radius:var(--radius);
  background:var(--bg-panel);
  box-shadow:inset 0 0 0 1px var(--highlight),var(--shadow-card);
}
.ai-stage-card h3{margin-top:12px}
.ai-stage-card p{margin-top:16px;color:var(--text-muted)}
.ai-dev-layout{
  display:grid;
  grid-template-columns:minmax(0,2fr) minmax(270px,1fr);
  gap:24px;
  align-items:start;
}
.ai-dev-main{
  padding:32px;
  border:1px solid var(--border);
  border-radius:var(--radius);
  background:var(--bg-panel);
  box-shadow:inset 0 0 0 1px var(--highlight),var(--shadow-card);
}
.ai-dev-main h3:not(:first-child){margin-top:36px}
.ai-dev-main p{margin-top:14px;color:var(--text-muted)}
.ai-dev-aside{
  position:sticky;
  top:96px;
  padding:26px;
  border:1px solid var(--border);
  border-radius:var(--radius);
  background:var(--bg-panel-2);
  box-shadow:inset 0 0 0 1px var(--highlight);
}
.ai-dev-aside ul{display:grid;gap:16px;margin-top:20px}
.ai-dev-aside li{
  display:flex;
  gap:10px;
  color:var(--text-muted);
  font-size:14px;
}
.ai-dev-aside .status-dot{margin-top:8px}
.ai-failure-list{display:grid;gap:12px}
.ai-failure-item{
  display:grid;
  grid-template-columns:minmax(220px,1fr) minmax(0,1.35fr) minmax(0,1.35fr);
  gap:24px;
  align-items:start;
  padding:24px;
  border:1px solid var(--border);
  border-radius:var(--radius);
  background:var(--bg-panel);
  box-shadow:inset 0 0 0 1px var(--highlight);
}
.ai-failure-item h3{margin-top:10px;font-size:20px}
.ai-failure-item p{color:var(--text-muted);font-size:15px}
.ai-failure-item strong{color:var(--text)}
.ai-fact-grid{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:14px;
}
.ai-fact-card{
  min-height:190px;
  padding:25px;
  border:1px solid var(--border);
  border-radius:var(--radius);
  background:var(--bg-panel);
  box-shadow:inset 0 0 0 1px var(--highlight),var(--shadow-card);
}
.ai-fact-card strong{
  display:block;
  color:var(--accent-dark);
  font-family:var(--font-display);
  font-size:30px;
  line-height:1.15;
}
.ai-fact-card > span{
  display:block;
  margin-top:7px;
  color:var(--text);
  font-weight:750;
}
.ai-fact-card p{margin-top:14px;color:var(--text-muted);font-size:14px}
.ai-platform-line{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:9px;
  margin-top:22px;
  padding:18px;
  border:1px solid var(--border);
  border-radius:var(--radius);
  background:var(--bg-panel-2);
}
.ai-choice-panel{
  display:grid;
  grid-template-columns:minmax(0,1.55fr) minmax(300px,.75fr);
  gap:42px;
  align-items:center;
  padding:38px;
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  background:
    radial-gradient(44vw 34vw at 100% 0,rgba(var(--accent-bright-rgb),.09),transparent 68%),
    var(--bg-panel);
  box-shadow:inset 0 0 0 1px var(--highlight),var(--shadow-window);
}
.ai-choice-copy h2{margin-top:16px}
.ai-choice-copy p{margin-top:16px;color:var(--text-muted)}
.ai-choice-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.ai-choice-checklist{
  padding:26px;
  border:1px solid var(--border);
  border-radius:var(--radius);
  background:var(--bg-panel-2);
  box-shadow:inset 0 0 0 1px var(--highlight);
}
.ai-choice-checklist ul{display:grid;gap:18px;margin-top:20px}
.ai-choice-checklist li{display:flex;gap:11px}
.ai-choice-checklist li > .status-dot{margin-top:8px}
.ai-choice-checklist strong{font-size:14px}
.ai-choice-checklist p{margin-top:2px;color:var(--text-muted);font-size:13px}

@media (max-width:1040px){
  .ai-hero-layout{grid-template-columns:1fr;gap:44px}
  .ai-workbench{transform:none}
  .ai-principle-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .ai-principle-wide{grid-column:span 2}
  .ai-stage-grid{grid-template-columns:1fr}
  .ai-failure-item{grid-template-columns:1fr 1fr}
  .ai-failure-item > div{grid-column:1/-1}
  .ai-fact-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:768px){
  .ai-hero{padding-top:42px;padding-bottom:64px}
  .ai-hero::after{display:none}
  .ai-hero-lede{font-size:17px}
  .ai-flow{grid-template-columns:1fr;padding:24px 18px}
  .ai-flow-lines{display:none}
  .ai-flow-targets{grid-template-columns:repeat(3,minmax(0,1fr))}
  .ai-tool-strip{padding-right:18px;padding-bottom:22px;padding-left:18px}
  .ai-principle-grid{grid-template-columns:1fr}
  .ai-principle-wide{grid-column:auto}
  .ai-dev-layout{grid-template-columns:1fr}
  .ai-dev-aside{position:static}
  .ai-choice-panel{grid-template-columns:1fr;padding:28px}
}
@media (max-width:640px){
  .ai-workbench-head{align-items:flex-start;flex-direction:column}
  .ai-flow-targets{grid-template-columns:1fr}
  .ai-mini-panel{align-items:stretch;flex-direction:column}
  .ai-mini-panel i{width:1px;height:16px;min-width:0;margin-inline:auto}
  .ai-principle-card,
  .ai-stage-card,
  .ai-dev-main{padding:22px}
  .ai-failure-item{grid-template-columns:1fr;padding:20px}
  .ai-failure-item > div{grid-column:auto}
  .ai-fact-grid{grid-template-columns:1fr}
  .ai-fact-card{min-height:0}
  .ai-choice-panel{gap:28px;padding:22px}
  .ai-choice-actions{align-items:stretch;flex-direction:column}
  .ai-choice-actions .button{width:100%}
}