/* AI Studio (prefix ai-) */
:root{--ai-or:#FF5B1A;--ai-deep:#C2410C;--ai-pe:#FFA77F;--ai-pan:#0B0D14;--ai-ln:#22263A;--ai-mut:#8C91A3}

/* ───── hero: knowledge lattice ───── */
.ai-lt{position:relative;background:rgba(11,13,20,.82);border:1px solid var(--ai-ln);box-shadow:0 40px 90px -40px rgba(255,91,26,.35);backdrop-filter:blur(3px);color:#E8EAF0;max-width:640px;margin-left:auto}
.ai-lt-top{display:flex;justify-content:space-between;gap:12px;align-items:center;padding:12px 16px;border-bottom:1px solid var(--ai-ln);font-size:12.5px}
.ai-lt-top span{display:flex;align-items:center;gap:8px;color:#fff;font-weight:500}
.ai-lt-top span i{width:7px;height:7px;border-radius:50%;background:#3DDC84;box-shadow:0 0 0 3px rgba(61,220,132,.15)}
.ai-lt-top span b{font-weight:500}
.ai-lt-sets{display:flex;gap:4px}
.ai-lt-sets button{all:unset;cursor:pointer;font-size:11px;color:var(--ai-mut);padding:3px 8px;border:1px solid var(--ai-ln);transition:color .25s,border-color .25s,background .25s}
.ai-lt-sets button[aria-pressed=true]{color:#fff;border-color:var(--ai-or);background:rgba(255,91,26,.12)}
.ai-lt-sets button:focus-visible{outline:2px solid var(--ai-pe)}
.ai-lt-docs.ai-sw .ai-lt-doc{animation:aiDocIn .5s both}.ai-lt-docs.ai-sw .ai-lt-doc:nth-of-type(2){animation-delay:.08s}.ai-lt-docs.ai-sw .ai-lt-doc:nth-of-type(3){animation-delay:.16s}
@keyframes aiDocIn{from{opacity:0;transform:translateX(-12px)}}
.ai-lt-stage{display:grid;grid-template-columns:164px minmax(0,1fr) 170px;grid-template-areas:"docs svg a" "q svg a";gap:6px 10px;padding:16px;min-height:340px}
.ai-lt-cap{display:block;font-size:10.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--ai-mut);margin-bottom:8px}
.ai-lt-docs{grid-area:docs}
.ai-lt-doc{display:grid;grid-template-columns:30px 1fr;column-gap:8px;align-items:center;padding:7px 8px;border:1px solid var(--ai-ln);background:#0E1018;margin-bottom:6px;transition:border-color .35s,background .35s,transform .35s}
.ai-lt-doc i{grid-row:span 2;font-style:normal;font-size:9.5px;font-weight:700;letter-spacing:.04em;width:30px;height:34px;display:grid;place-items:center;border:1px solid #3A3F55;color:var(--ai-pe);clip-path:polygon(0 0,72% 0,100% 22%,100% 100%,0 100%)}
.ai-lt-doc b{font-size:12px;font-weight:500;color:#fff;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.ai-lt-doc small{font-size:10.5px;color:var(--ai-mut)}
.ai-lt-doc.ai-read{border-color:var(--ai-or);background:rgba(255,91,26,.1);transform:translateX(4px)}
.ai-lt-doc.ai-read small{color:var(--ai-pe)}
.ai-lt-svg{grid-area:svg;width:100%;height:100%;max-height:330px;align-self:center;overflow:visible}
.ai-lt-edges line{stroke:#2A2F44;stroke-width:1}
.ai-lt-edges line.ai-amb{stroke:#4A3326;animation:aiEdge 3.6s ease-in-out infinite}
@keyframes aiEdge{0%,100%{stroke:#2A2F44}50%{stroke:#7A3A1C}}
.ai-lt-nodes circle{fill:#0E1018;stroke:#4A4F66;stroke-width:1.2;transition:fill .3s,stroke .3s,r .3s}
.ai-lt-nodes circle.ai-lit{fill:var(--ai-or);stroke:var(--ai-pe)}
.ai-lt-nodes circle.ai-doc{stroke:var(--ai-pe)}
.ai-lt-nodes circle.ai-miss{fill:#0E1018;stroke:#C9CBD3;stroke-dasharray:2 2}
.ai-lt-flow path{fill:none;stroke:var(--ai-or);stroke-width:2;stroke-linecap:round;filter:drop-shadow(0 0 4px rgba(255,91,26,.8))}
.ai-lt-flow circle{fill:#fff}
.ai-lt-q{grid-area:q;align-self:end}
.ai-lt-qc{border:1px solid #3A3F55;background:#0E1018;padding:10px 12px;opacity:0;transform:translateX(-14px);transition:opacity .4s,transform .4s}
.ai-lt-qc.ai-in{opacity:1;transform:none}
.ai-lt-qc em{display:inline-block;font-style:normal;font-size:10px;letter-spacing:.08em;text-transform:uppercase;color:var(--ai-pe);border:1px solid #4A3326;padding:1px 6px;margin-bottom:6px}
.ai-lt-qc p{font-size:12.5px;line-height:1.45;color:#fff;margin:0}
.ai-lt-a{grid-area:a;align-self:center}
.ai-lt-ac{border:1px solid var(--ai-or);background:linear-gradient(180deg,rgba(255,91,26,.12),rgba(255,91,26,.02));padding:12px;opacity:0;transform:translateX(14px);transition:opacity .45s,transform .45s}
.ai-lt-ac.ai-in{opacity:1;transform:none}
.ai-lt-ac p{font-size:12.5px;line-height:1.5;color:#fff;margin:0 0 10px}
.ai-lt-cite{display:flex;flex-direction:column;gap:4px;font-size:11px;color:var(--ai-pe)}
.ai-lt-cite span{display:flex;gap:6px;align-items:center;border-top:1px dashed #4A3326;padding-top:6px}
.ai-lt-cite span b{font-weight:600;background:var(--ai-or);color:#fff;padding:0 5px;font-size:10px}
.ai-lt-ac.ai-hand{border-color:#C9CBD3;background:rgba(255,255,255,.04)}
.ai-lt-ac.ai-hand .ai-lt-cite{color:#E8EAF0}
.ai-lt-ac.ai-hand .ai-lt-cite span b{background:#E8EAF0;color:#0B0C10}
.ai-lt-pick{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--ai-ln)}
.ai-lt-pick button{all:unset;cursor:pointer;padding:10px 12px;font-size:11.5px;line-height:1.35;color:#C9CBD3;border-left:1px solid var(--ai-ln);position:relative;transition:background .25s,color .25s}
.ai-lt-pick button:first-child{border-left:0}
.ai-lt-pick button small{display:block;font-size:9.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--ai-mut);margin-bottom:3px}
.ai-lt-pick button[aria-pressed=true]{background:rgba(255,91,26,.1);color:#fff}
.ai-lt-pick button[aria-pressed=true]::before{content:"";position:absolute;left:0;right:0;top:-1px;height:2px;background:var(--ai-or)}
.ai-lt-pick button:hover{color:#fff}
.ai-lt-pick button:focus-visible{outline:2px solid var(--ai-pe);outline-offset:-2px}
@media (max-width:640px){
  .ai-lt-stage{grid-template-columns:1fr 1fr;grid-template-areas:"docs docs" "svg svg" "q a";min-height:0;padding:12px}
  .ai-lt-docs{display:grid;grid-template-columns:repeat(3,1fr);gap:6px}.ai-lt-docs .ai-lt-cap{grid-column:1/-1;margin:0}
  .ai-lt-doc{margin:0;grid-template-columns:1fr;padding:6px}.ai-lt-doc i{display:none}.ai-lt-doc b{font-size:11px}
  .ai-lt-svg{height:150px}
  .ai-lt-q,.ai-lt-a{align-self:start}
  .ai-lt-pick{grid-template-columns:1fr 1fr}.ai-lt-pick button:nth-child(3){border-left:0}.ai-lt-pick button:nth-child(n+3){border-top:1px solid var(--ai-ln)}
  .ai-lt-top{flex-wrap:wrap}.ai-lt-sets button{font-size:10px;padding:2px 6px}
}

/* laptop widths (901-1300): hero column is only 430-570px wide */
@media (min-width:901px) and (max-width:1300px){
  .ai-lt-top{flex-wrap:wrap;row-gap:8px}.ai-lt-top span,.ai-lt-sets button{white-space:nowrap}
  .ai-lt-sets button{font-size:10.5px;padding:3px 7px}
}
@media (min-width:901px) and (max-width:1240px){
  .ai-lt-stage{grid-template-columns:1fr 1fr;grid-template-areas:"docs docs" "svg svg" "q a";min-height:0;padding:14px}
  .ai-lt-docs{display:grid;grid-template-columns:repeat(3,1fr);gap:6px}.ai-lt-docs .ai-lt-cap{grid-column:1/-1;margin:0}
  .ai-lt-doc{margin:0;grid-template-columns:1fr;padding:6px 8px}.ai-lt-doc i{display:none}.ai-lt-doc.ai-read{transform:none}
  .ai-lt-svg{height:150px}
  .ai-lt-q,.ai-lt-a{align-self:start}
}

/* ───── answers: footnoted claims ───── */
.ai-ft{background:#0B0D14;border-top:1px solid var(--ai-ln);border-bottom:1px solid var(--ai-ln);color:#fff}
.ai-ft-in{display:grid;grid-template-columns:1.5fr 1fr;gap:clamp(24px,5vw,80px);padding-block:clamp(36px,4vw,56px);align-items:center}
.ai-ft-p{font-size:clamp(20px,2vw,28px);line-height:1.45;letter-spacing:-.01em;color:#6E7286;margin:0}
.ai-ft-s{transition:color .35s,background .35s;padding:0 2px}
.ai-ft-s sup{font-size:.5em;color:var(--ai-or);margin-left:2px;font-weight:600}
.ai-ft-s.ai-on{color:#fff;background:linear-gradient(transparent 62%,rgba(255,91,26,.35) 62%)}
.ai-ft-side{border-left:1px solid var(--ai-ln);padding-left:clamp(16px,2vw,28px)}
.ai-ft-side small{display:block;font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--ai-mut);margin-bottom:10px}
.ai-ft-side ol{list-style:none;margin:0;padding:0}
.ai-ft-side button{all:unset;cursor:pointer;display:flex;gap:12px;align-items:center;padding:9px 0;width:100%;border-bottom:1px solid var(--ai-ln);font-size:14.5px;color:#C9CBD3;transition:color .25s}
.ai-ft-side button b{width:22px;height:22px;display:grid;place-items:center;border:1px solid #3A3F55;font-size:11px;color:var(--ai-pe);transition:background .25s,color .25s}
.ai-ft-side button.ai-on{color:#fff}.ai-ft-side button.ai-on b{background:var(--ai-or);border-color:var(--ai-or);color:#fff}
.ai-ft-side button:focus-visible{outline:2px solid var(--ai-pe)}
@media (max-width:860px){.ai-ft-in{grid-template-columns:1fr}.ai-ft-side{border-left:0;padding-left:0}}

/* ───── uses: element tiles ───── */
.ai-el{display:grid;grid-template-columns:minmax(0,.95fr) minmax(0,1.05fr);gap:clamp(20px,3vw,40px);align-items:start}
.ai-el-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}
.ai-el-t{all:unset;box-sizing:border-box;cursor:pointer;position:relative;aspect-ratio:1/1.08;padding:10px;border:1px solid var(--paper-line,#D6D6D2);background:#fff;display:flex;flex-direction:column;transition:background .3s,border-color .3s,transform .3s,box-shadow .3s}
.ai-el-t small{font-size:11px;color:#8F8A80}
.ai-el-t b{font-family:var(--f-flex);font-size:clamp(28px,3vw,44px);font-weight:600;letter-spacing:-.04em;line-height:1;margin-top:auto;color:#0B0C10}
.ai-el-t span{font-size:12px;line-height:1.25;margin-top:6px;color:#4B4E58;min-height:2.5em}
.ai-el-t em{position:absolute;top:10px;right:10px;font-style:normal;font-size:9.5px;letter-spacing:.08em;text-transform:uppercase;color:var(--ai-deep)}
.ai-el-t:hover{border-color:var(--ai-or);transform:translateY(-2px)}
.ai-el-t[aria-pressed=true]{background:var(--ai-or);border-color:var(--ai-or);box-shadow:0 18px 30px -18px rgba(194,65,12,.8)}
.ai-el-t[aria-pressed=true] *{color:#fff!important}
.ai-el-t:focus-visible{outline:2px solid #0B0C10;outline-offset:2px}
.ai-el-t::after{content:"";position:absolute;left:0;bottom:0;height:3px;width:0;background:#0B0C10}
.ai-el-t.ai-run::after{animation:aiFill var(--ai-dur,6.5s) linear forwards}
@keyframes aiFill{to{width:100%}}
.ai-el-key{grid-column:1/-1;display:flex;align-items:center;gap:8px;font-size:13px;color:#4B4E58;margin:6px 0 0}
.ai-el-key i{width:8px;height:8px;border-radius:50%;background:var(--ai-or);animation:aiPulse 1.6s infinite}
@keyframes aiPulse{50%{opacity:.3}}
.ai-el-lab{background:var(--ai-pan);color:#E8EAF0;border:1px solid #1A1D2A;padding:clamp(18px,2.4vw,30px);position:relative;min-height:100%;box-shadow:0 40px 70px -40px rgba(11,12,16,.5)}
.ai-el-lab::before{content:"";position:absolute;inset:0;background-image:radial-gradient(#22263A 1px,transparent 1px);background-size:18px 18px;opacity:.5;pointer-events:none}
.ai-el-p{display:none;position:relative}
.ai-el-p.ai-on{display:block}
.ai-el-p header{display:flex;gap:14px;align-items:center;margin-bottom:20px}
.ai-el-sym{width:54px;height:54px;display:grid;place-items:center;background:var(--ai-or);color:#fff;font:600 24px var(--f-flex);letter-spacing:-.03em}
.ai-el-p header small{font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--ai-pe)}
.ai-el-p h3{font-size:clamp(20px,1.8vw,26px);font-weight:500;color:#fff;margin:2px 0 0}
.ai-el-eq{display:grid;grid-template-columns:1fr 64px 1fr;gap:8px;align-items:stretch}
.ai-el-box{border:1px solid #2A2F44;padding:14px;background:#0E1018}
.ai-el-box small,.ai-el-ex small,.ai-el-cat small{display:block;font-size:10.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--ai-mut);margin-bottom:6px}
.ai-el-box p,.ai-el-ex p,.ai-el-cat p{font-size:14px;line-height:1.55;margin:0;color:#D5D8E0}
.ai-el-out{border-color:var(--ai-or);background:rgba(255,91,26,.08)}
.ai-el-out small{color:var(--ai-pe)}
.ai-el-op{position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px}
.ai-el-op span{font-size:12px;font-weight:600;color:#fff;background:var(--ai-or);padding:3px 8px;border-radius:20px}
.ai-el-op svg{width:56px;fill:none;stroke:var(--ai-or);stroke-width:2;stroke-dasharray:80;stroke-dashoffset:80}
.ai-el-op i{position:absolute;top:calc(50% + 12px);left:4px;width:6px;height:6px;border-radius:50%;background:var(--ai-pe);opacity:0}
.ai-el-p.ai-on .ai-el-op svg{animation:aiDraw .7s .35s forwards}
.ai-el-p.ai-on .ai-el-op i{animation:aiBub 1.8s 1s infinite}
.ai-el-p.ai-on .ai-el-op i:nth-of-type(2){animation-delay:1.6s}.ai-el-p.ai-on .ai-el-op i:nth-of-type(3){animation-delay:2.2s}
@keyframes aiDraw{to{stroke-dashoffset:0}}
@keyframes aiBub{0%{opacity:0;transform:translateX(0)}20%{opacity:1}100%{opacity:0;transform:translateX(48px)}}
.ai-el-p.ai-on .ai-el-in{animation:aiIn .5s both}
.ai-el-p.ai-on .ai-el-out{animation:aiIn .5s .9s both}
.ai-el-p.ai-on .ai-el-ex{animation:aiIn .5s 1.3s both}
.ai-el-p.ai-on .ai-el-cat{animation:aiIn .5s 1.7s both}
@keyframes aiIn{from{opacity:0;transform:translateY(10px)}}
.ai-el-ex{margin-top:14px;padding:14px;border-left:2px solid var(--ai-pe);background:rgba(255,167,127,.06)}
.ai-el-cat{margin-top:14px;display:flex;gap:12px;align-items:flex-start;padding:12px 14px;border:1px dashed #4A3326}
.ai-el-cat svg{width:28px;height:28px;flex:none;fill:none;stroke:var(--ai-or);stroke-width:1.6;stroke-linejoin:round}
@media (max-width:980px){.ai-el{grid-template-columns:1fr}}
@media (max-width:560px){
  .ai-el-grid{gap:5px}.ai-el-t{padding:6px;aspect-ratio:auto;min-height:84px}.ai-el-t b{font-size:24px}.ai-el-t span{font-size:10.5px;min-height:0}.ai-el-t em{display:none}
  .ai-el-eq{grid-template-columns:1fr}.ai-el-op{flex-direction:row;height:34px}.ai-el-op svg{transform:rotate(90deg);width:34px}.ai-el-op i{display:none}
}

/* ───── quadrant ───── */
.ai-qd{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(0,1fr);gap:clamp(20px,3vw,44px);align-items:stretch}
.ai-qd-plot{position:relative;aspect-ratio:1.35/1;border-left:1px solid #4A4F66;border-bottom:1px solid #4A4F66;margin:0 0 30px 30px;touch-action:none}
.ai-qd-q{position:absolute;width:50%;height:50%;padding:12px 14px;border:1px dashed #22263A;box-sizing:border-box}
.ai-qd-q b{display:block;font-size:13px;font-weight:500;color:#C9CBD3}
.ai-qd-q small{font-size:11px;color:var(--ai-mut)}
.ai-qd-q1{left:0;top:0}.ai-qd-q2{right:0;top:0;text-align:right}.ai-qd-q3{left:0;bottom:0;display:flex;flex-direction:column;justify-content:flex-end}.ai-qd-q4{right:0;bottom:0;text-align:right;display:flex;flex-direction:column;justify-content:flex-end;background:linear-gradient(135deg,rgba(255,91,26,.03),rgba(255,91,26,.16));border-color:rgba(255,91,26,.4)}
.ai-qd-q4 b{color:var(--ai-or);font-size:15px}
.ai-qd-ax{position:absolute;font-size:11px;letter-spacing:.06em;color:var(--ai-mut);white-space:nowrap}
.ai-qd-ax-x{left:0;bottom:-26px}
.ai-qd-ax-y{left:-24px;bottom:0;transform-origin:left bottom;transform:rotate(-90deg) translateY(4px)}
.ai-qd-dot,.ai-qd-you{all:unset;position:absolute;left:calc(var(--x) * 1%);bottom:calc(var(--y) * 1%);width:0;height:0;cursor:pointer;z-index:2}
.ai-qd-dot i,.ai-qd-you i{position:absolute;left:-7px;top:-7px;width:14px;height:14px;border-radius:50%;background:#0B0D14;border:2px solid #C9CBD3;transition:transform .3s,background .3s,border-color .3s}
.ai-qd-dot span,.ai-qd-you span{position:absolute;left:12px;top:-9px;font-size:12px;white-space:nowrap;color:#C9CBD3;background:#05060A;padding:1px 6px;border:1px solid #22263A;opacity:0;transition:opacity .25s;pointer-events:none}
.ai-qd-dot:hover span,.ai-qd-dot:focus-visible span,.ai-qd-dot.ai-on span{opacity:1}
.ai-qd-dot[style*="--x:8"] span,.ai-qd-dot[style*="--x:7"] span,.ai-qd-dot[style*="--x:6"] span{left:auto;right:12px}
.ai-qd-dot.ai-on i{background:#fff;border-color:#fff;transform:scale(1.25);box-shadow:0 0 0 6px rgba(255,255,255,.12)}
.ai-qd-dot.ai-on{z-index:3}
.ai-qd-you{cursor:grab;z-index:4}
.ai-qd-you i{background:var(--ai-or);border-color:var(--ai-pe);width:20px;height:20px;left:-10px;top:-10px;box-shadow:0 0 0 0 rgba(255,91,26,.6);animation:aiRing 2s infinite}
@keyframes aiRing{70%{box-shadow:0 0 0 14px rgba(255,91,26,0)}100%{box-shadow:0 0 0 0 rgba(255,91,26,0)}}
.ai-qd-you span{opacity:1;color:#fff;border-color:var(--ai-or);top:-30px;left:-40px}
.ai-qd-you:active{cursor:grabbing}
.ai-qd-you:focus-visible i,.ai-qd-dot:focus-visible i{outline:2px solid #fff;outline-offset:3px}
.ai-qd-card{border:1px solid #22263A;background:#0B0D14;padding:clamp(18px,2vw,28px);display:flex;flex-direction:column}
.ai-qd-card small{font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--ai-mut)}
.ai-qd-card h3{font-size:clamp(22px,2vw,30px);font-weight:600;letter-spacing:-.02em;color:#fff;margin:6px 0 4px}
.ai-qd-card.ai-start h3{color:var(--ai-or)}
.ai-qd-n{font-size:15px;color:var(--ai-pe);margin:0 0 8px}
.ai-qd-w{font-size:15px;line-height:1.55;color:#C9CBD3;margin:0 0 16px;min-height:3.1em}
.ai-qd-test{list-style:none;margin:0 0 16px;padding:0;border-top:1px solid #22263A}
.ai-qd-test li{display:flex;align-items:center;gap:10px;padding:9px 0;border-bottom:1px solid #22263A;font-size:14px;color:#6E7286;transition:color .3s}
.ai-qd-test li::before{content:"";width:16px;height:16px;border:1px solid #3A3F55;flex:none;transition:background .3s,border-color .3s}
.ai-qd-test li.ai-y{color:#fff}.ai-qd-test li.ai-y::before{background:var(--ai-or) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M4 8l3 3 5-6' fill='none' stroke='%23fff' stroke-width='2'/%3E%3C/svg%3E") center/12px no-repeat;border-color:var(--ai-or)}
.ai-qd-test li.ai-q{color:#C9CBD3}.ai-qd-test li.ai-q::before{content:"?";display:grid;place-items:center;font-size:11px;color:var(--ai-pe);border-color:var(--ai-pe)}
.ai-qd-foot{margin-top:auto;font-size:13.5px;color:var(--ai-mut);border-left:2px solid var(--ai-or);padding-left:12px}
@media (max-width:900px){.ai-qd{grid-template-columns:1fr}}
@media (max-width:560px){.ai-qd-plot{aspect-ratio:1/1.05;margin-left:22px}.ai-qd-q{padding:8px}.ai-qd-q b{font-size:11.5px}.ai-qd-q small{display:none}.ai-qd-q4 b{font-size:12.5px}}

/* ───── myths: peel ───── */
.ai-pl{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:clamp(20px,3vw,48px);align-items:center}
.ai-pl-sheet{display:grid;gap:8px;padding:14px;background:#E9DFD3;border:1px solid #D6CBBE;position:relative}
.ai-pl-sheet::before{content:"Label sheet · 5 myths";font-size:10.5px;letter-spacing:.12em;text-transform:uppercase;color:#8F8A80;margin-bottom:2px}
.ai-pl-sheet button{all:unset;cursor:pointer;display:flex;gap:12px;align-items:center;padding:12px 14px;background:#FFF8F2;border:1px solid #E2D3C4;border-radius:10px;font-size:14px;line-height:1.35;color:#0B0C10;transition:transform .25s,background .25s,box-shadow .25s}
.ai-pl-sheet button b{font-size:11px;color:var(--ai-deep);font-weight:600}
.ai-pl-sheet button:hover{transform:translateX(4px)}
.ai-pl-sheet button[aria-pressed=true]{background:var(--ai-or);border-color:var(--ai-or);color:#fff;box-shadow:0 10px 24px -14px rgba(194,65,12,.9)}
.ai-pl-sheet button[aria-pressed=true] b{color:#fff}
.ai-pl-sheet button.ai-done:not([aria-pressed=true]){background:transparent;border-style:dashed;color:#8F8A80}
.ai-pl-sheet button:focus-visible{outline:2px solid #0B0C10;outline-offset:2px}
.ai-pl-stage{position:relative;aspect-ratio:16/9.5;max-height:420px;user-select:none;-webkit-user-select:none;touch-action:none}
.ai-pl-card{position:absolute;inset:0;display:none}
.ai-pl-card.ai-on{display:block}
.ai-pl-truth{position:absolute;inset:0;background:#0B0D14;color:#fff;padding:clamp(20px,3vw,40px);display:flex;flex-direction:column;justify-content:center;border-radius:16px;background-image:radial-gradient(circle at 85% 80%,rgba(255,91,26,.25),transparent 55%)}
.ai-pl-truth small,.ai-pl-stk small{font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--ai-pe)}
.ai-pl-truth p{font-size:clamp(16px,1.6vw,22px);line-height:1.5;margin:10px 0 0;max-width:30em}
.ai-pl-stk{position:absolute;inset:0;border-radius:16px;background:var(--ai-or);color:#fff;padding:clamp(20px,3vw,40px);display:flex;flex-direction:column;justify-content:center;box-shadow:0 2px 0 rgba(0,0,0,.06);background-image:repeating-linear-gradient(135deg,rgba(255,255,255,.05) 0 2px,transparent 2px 12px)}
.ai-pl-stk small{color:#FFE2D3}
.ai-pl-stk p{font-family:var(--f-flex);font-size:clamp(24px,3vw,42px);line-height:1.12;letter-spacing:-.03em;font-weight:600;margin:10px 0 0;max-width:14em}
.ai-pl-hint{position:absolute;right:clamp(20px,3vw,40px);bottom:18px;font-size:12px;color:#FFE2D3;display:flex;gap:6px;align-items:center}
.ai-pl-hint::after{content:"↘"}
.ai-pl-flap{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;overflow:visible;filter:drop-shadow(-6px -6px 10px rgba(0,0,0,.25))}
.ai-pl-grip{position:absolute;width:56px;height:56px;margin:-28px 0 0 -28px;border-radius:50%;cursor:grab;z-index:3}
.ai-pl-grip::after{content:"";position:absolute;inset:18px;border-radius:50%;background:#fff;box-shadow:0 0 0 0 rgba(255,255,255,.7);animation:aiGrip 1.8s infinite}
@keyframes aiGrip{70%{box-shadow:0 0 0 12px rgba(255,255,255,0)}}
.ai-pl-grip.ai-gone{display:none}
.ai-pl-ctl{display:flex;gap:10px;margin-top:14px}
.ai-pl-ctl button{all:unset;cursor:pointer;padding:11px 18px;font-size:14px;font-weight:500;border:1px solid #0B0C10;color:#0B0C10;transition:background .2s,color .2s}
.ai-pl-ctl .ai-pl-go{background:#0B0C10;color:#fff}
.ai-pl-ctl button:hover{background:var(--ai-or);border-color:var(--ai-or);color:#fff}
.ai-pl-ctl button:focus-visible{outline:2px solid var(--ai-or);outline-offset:2px}
@media (max-width:900px){.ai-pl{grid-template-columns:1fr}.ai-pl-sheet{grid-template-columns:1fr}}
@media (max-width:560px){.ai-pl-stage{aspect-ratio:1/1.05;max-height:none}.ai-pl-sheet button{padding:9px 12px;font-size:13px}}

/* ───── rings ───── */
.ai-rg{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:clamp(20px,3vw,48px);align-items:center}
.ai-rg-vis svg{width:100%;max-width:560px;display:block;margin:auto;overflow:visible}
.ai-rg-rings circle{fill:none;stroke:#2A2F44;stroke-width:12;cursor:pointer;transition:stroke .35s}
.ai-rg-rings circle.ai-th{stroke:#3A3F55;stroke-width:1;pointer-events:none}
.ai-rg-rings circle.ai-on{stroke:rgba(255,91,26,.28)}
.ai-rg-rings circle.ai-th.ai-on{stroke:var(--ai-or);stroke-width:1.6}
.ai-rg-rings circle.ai-hit{stroke:rgba(255,91,26,.6)}
.ai-rg-rings g.ai-nb circle{fill:#05060A;stroke:#3A3F55;stroke-width:1}.ai-rg-rings g.ai-nb text{fill:#C9CBD3;font-size:11px;text-anchor:middle;letter-spacing:0}.ai-rg-rings g.ai-nb.ai-on circle{fill:var(--ai-or);stroke:var(--ai-or)}.ai-rg-rings g.ai-nb.ai-on text{fill:#fff}
@media (max-width:600px){.ai-rg-rings text.ai-lb{display:none}.ai-rg-rings g.ai-nb text{font-size:16px}}
.ai-rg-rings text{font-size:10px;letter-spacing:.06em;fill:#6E7286;pointer-events:none;text-transform:uppercase}
.ai-rg-rings text.ai-on{fill:var(--ai-pe)}
.ai-rg-core{fill:var(--ai-or);filter:drop-shadow(0 0 20px rgba(255,91,26,.6))}
.ai-rg-ct{fill:#fff;font-size:13px;font-weight:600;text-anchor:middle}
.ai-rg-pk circle{fill:#E8EAF0}
.ai-rg-pk circle.ai-bad{fill:var(--ai-or)}
.ai-rg-pk text{font-size:11px;fill:#fff;paint-order:stroke;stroke:#05060A;stroke-width:4px}
.ai-rg-leg{display:grid;grid-template-columns:1fr 1fr;gap:6px;margin-bottom:18px}
.ai-rg-leg button{all:unset;cursor:pointer;display:flex;gap:10px;align-items:center;padding:9px 10px;border:1px solid #22263A;font-size:13px;line-height:1.3;color:#C9CBD3;transition:border-color .25s,background .25s,color .25s}
.ai-rg-leg button b{width:22px;height:22px;flex:none;border-radius:50%;border:1px solid #3A3F55;display:grid;place-items:center;font-size:11px}
.ai-rg-leg button[aria-pressed=true]{border-color:var(--ai-or);background:rgba(255,91,26,.08);color:#fff}
.ai-rg-leg button[aria-pressed=true] b{background:var(--ai-or);border-color:var(--ai-or)}
.ai-rg-leg button:focus-visible{outline:2px solid var(--ai-pe)}
.ai-rg-p{display:none;border-top:2px solid var(--ai-or);padding-top:16px}
.ai-rg-p.ai-on{display:block;animation:aiIn .45s both}
.ai-rg-p small{font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--ai-mut)}
.ai-rg-p h3{font-size:clamp(22px,2vw,28px);font-weight:500;color:#fff;margin:6px 0 8px}
.ai-rg-p p{font-size:16px;line-height:1.6;color:#C9CBD3;margin:0 0 14px}
.ai-rg-ev{display:inline-flex;gap:8px;align-items:center;font-size:13px;color:var(--ai-pe);border:1px solid #4A3326;padding:6px 10px}
.ai-rg-ev i{width:8px;height:8px;border-radius:50%;background:var(--ai-or)}
@media (max-width:900px){.ai-rg{grid-template-columns:1fr}.ai-rg-vis svg{max-width:440px}}
@media (max-width:560px){.ai-rg-leg{grid-template-columns:1fr}}

/* ───── tank ───── */
.ai-tk{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,.8fr);gap:clamp(20px,3vw,48px);align-items:center}
.ai-tk-vis{background:#0B0D14;padding:clamp(14px,2vw,26px);padding-top:clamp(44px,5vw,60px);border:1px solid #1A1D2A}
.ai-tk-vis svg{width:100%;display:block;overflow:visible}
.ai-tk-pipes path{fill:none;stroke:#3A3F55;stroke-width:8;stroke-linejoin:round}
.ai-tk-drops circle{fill:var(--ai-pe)}
.ai-tk-lb{font-size:13px;fill:#C9CBD3}
.ai-tk-body{fill:#0E1018;stroke:#4A4F66;stroke-width:2}
.ai-tk-water{fill:url(#ai-tk-wg);fill:rgba(255,91,26,.55)}
.ai-tk-cap{stroke:var(--ai-or);stroke-width:2;stroke-dasharray:6 4}
.ai-tk-al{stroke:var(--ai-pe);stroke-width:1;stroke-dasharray:3 4}
.ai-tk-ct{font-size:13px;fill:var(--ai-or);font-weight:600}
.ai-tk-ct2{font-size:13px;fill:var(--ai-pe)}
@media (max-width:600px){.ai-tk-lb{font-size:19px}.ai-tk-ct,.ai-tk-ct2{font-size:19px}.ai-tk-ax{font-size:17px}.ai-tk-vis{padding-top:56px}.ai-tk-lb tspan+tspan{display:none}}
.ai-tk-ax{font-size:11px;fill:#6E7286}
.ai-tk-float rect{fill:#E8EAF0}.ai-tk-float line{stroke:#E8EAF0;stroke-width:2}
.ai-tk-valve circle{fill:#0B0D14;stroke:#C9CBD3;stroke-width:2}.ai-tk-valve line{stroke:#C9CBD3;stroke-width:3;transition:transform .4s;transform-origin:0 0}
.ai-tk.ai-capped .ai-tk-valve line{transform:rotate(90deg);stroke:var(--ai-or)}.ai-tk.ai-capped .ai-tk-valve circle{stroke:var(--ai-or)}
.ai-tk-read{display:flex;align-items:baseline;gap:14px;flex-wrap:wrap;border-bottom:1px solid #D6D6D2;padding-bottom:14px}
.ai-tk-read small{width:100%;font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:#8F8A80}
.ai-tk-read b{font:600 clamp(32px,3.4vw,48px) var(--f-flex);letter-spacing:-.04em;color:#0B0C10}
.ai-tk-read span{font-size:16px;color:var(--ai-deep);font-weight:500}
.ai-tk-st{display:flex;gap:10px;align-items:center;margin:14px 0;font-size:15px;font-weight:500;color:#0B0C10}
.ai-tk-st i{width:10px;height:10px;border-radius:50%;background:#3DDC84}
.ai-tk.ai-alert .ai-tk-st i{background:var(--ai-pe);animation:aiPulse .8s infinite}
.ai-tk.ai-capped .ai-tk-st i{background:var(--ai-or)}
.ai-tk-steps{list-style:none;margin:0 0 18px;padding:0;counter-reset:s}
.ai-tk-steps li{padding:10px 0 10px 16px;border-left:2px solid #D6D6D2;font-size:14.5px;line-height:1.5;color:#4B4E58;transition:border-color .3s,color .3s}
.ai-tk-steps li b{display:block;color:#0B0C10;font-weight:600}
.ai-tk-steps li.ai-on{border-color:var(--ai-or);color:#0B0C10}
.ai-tk-ctl{display:flex;flex-wrap:wrap;gap:10px}
.ai-tk-ctl button{all:unset;cursor:pointer;padding:11px 16px;font-size:14px;font-weight:500;border:1px solid #0B0C10;color:#0B0C10}
.ai-tk-ctl .ai-tk-busy{background:var(--ai-or);border-color:var(--ai-or);color:#fff}
.ai-tk-ctl button:hover{background:#0B0C10;color:#fff;border-color:#0B0C10}
.ai-tk-ctl button:focus-visible{outline:2px solid var(--ai-or);outline-offset:2px}
@media (max-width:900px){.ai-tk{grid-template-columns:1fr}}

/* ───── stairs ───── */
.ai-st{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:clamp(20px,3vw,48px);align-items:center}
.ai-st-vis svg{width:100%;display:block;overflow:visible}
.ai-st-steps .ai-t{fill:#1A1D2A;stroke:#3A3F55}.ai-st-steps .ai-f{fill:#0E1018;stroke:#2A2F44}.ai-st-steps .ai-s{fill:#121520;stroke:#2A2F44}
.ai-st-steps g{cursor:pointer}
.ai-st-steps g.ai-on .ai-t{fill:rgba(255,91,26,.3);stroke:var(--ai-or)}
.ai-st-steps g.ai-on .ai-f{stroke:var(--ai-or)}
.ai-st-steps g.ai-done .ai-t{fill:#2A1A12;stroke:#7A3A1C}
.ai-st-steps text{font-size:12px;fill:#6E7286}
.ai-st-steps text.ai-n{font-size:13px;fill:#C9CBD3;font-weight:500}
.ai-st-steps text{paint-order:stroke;stroke:#05060A;stroke-width:4px}
.ai-st-steps text.ai-num{font-size:15px;font-weight:600;fill:#6E7286;stroke:none;text-anchor:middle}
.ai-st-steps g.ai-on text.ai-num{fill:var(--ai-or)}
@media (max-width:600px){.ai-st-steps text.ai-w,.ai-st-steps text.ai-n{display:none}.ai-st-steps text.ai-num{font-size:24px}}
.ai-st-steps g.ai-on text{fill:#fff}.ai-st-steps g.ai-on text.ai-w{fill:var(--ai-pe)}
.ai-st-steps .ai-loop{fill:none;stroke:var(--ai-pe);stroke-width:1.5;stroke-dasharray:4 3;animation:aiSpin 6s linear infinite;transform-box:fill-box;transform-origin:center}
@keyframes aiSpin{to{transform:rotate(360deg)}}
.ai-st-tok{transition:transform .7s cubic-bezier(.5,-.3,.4,1.4)}
.ai-st-tok .ai-t{fill:#FFA77F}.ai-st-tok .ai-l{fill:#FF5B1A}.ai-st-tok .ai-r{fill:#C2410C}
.ai-st-btns{display:grid;gap:6px;margin-bottom:18px}
.ai-st-btns button{all:unset;cursor:pointer;display:flex;gap:12px;align-items:center;padding:10px 12px;border:1px solid #22263A;color:#C9CBD3;font-size:14.5px;transition:border-color .25s,background .25s}
.ai-st-btns button b{width:26px;height:26px;display:grid;place-items:center;border:1px solid #3A3F55;font-size:12px;flex:none}
.ai-st-btns button small{display:block;font-size:12px;color:var(--ai-mut)}
.ai-st-btns button[aria-pressed=true]{border-color:var(--ai-or);background:rgba(255,91,26,.08);color:#fff}
.ai-st-btns button[aria-pressed=true] b{background:var(--ai-or);border-color:var(--ai-or)}
.ai-st-btns button:focus-visible{outline:2px solid var(--ai-pe)}
.ai-st-p{display:none}.ai-st-p.ai-on{display:block;animation:aiIn .45s both}
.ai-st-p small{font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--ai-pe)}
.ai-st-p h3{font-size:clamp(22px,2vw,28px);font-weight:500;color:#fff;margin:6px 0 8px}
.ai-st-p p{font-size:16px;line-height:1.6;color:#C9CBD3;margin:0}
@media (max-width:900px){.ai-st{grid-template-columns:1fr}}

@media (prefers-reduced-motion:reduce){
  .ai-lt *,.ai-el *,.ai-qd *,.ai-pl *,.ai-rg *,.ai-tk *,.ai-st *{animation:none!important;transition:none!important}
  .ai-el-op svg{stroke-dashoffset:0}
}

/* QA fixes (Q3) */
.ai-pl{align-items:start}
.ai-ft{padding-block:0}
.ai-pl-stage{max-height:none}
.ai-pl-hint{right:auto;left:clamp(20px,3vw,40px)}
.ai-qd-dot::before,.ai-qd-you::before{content:"";position:absolute;left:-14px;top:-14px;width:28px;height:28px}
.ai-qd-dot[style*="--x:86"] span{top:-34px;right:-6px}
@media (max-width:560px){
  .ai-lt-sets button{padding:6px 8px}
  .ai-qd-plot{margin-left:28px}.ai-qd-ax-y{left:-8px}
  .ai-qd-dot.ai-on:not(:hover):not(:focus-visible) span{opacity:0}
}
.ai-el-t small{align-self:flex-start}
/* widths pass: on the narrowest phones keep the two top dots clear of the quadrant labels */
@media (max-width:379px){.ai-qd-dot[style*="--y:86"],.ai-qd-dot[style*="--y:90"]{bottom:calc(var(--y) * 1% - 10px)}}
@media (min-width:901px) and (max-width:1199px){.ai-qd-dot[style*="--y:86"],.ai-qd-dot[style*="--y:90"]{bottom:calc(var(--y) * 1% - 30px)}}
@media (min-width:981px) and (max-width:1100px){.ai-el{grid-template-columns:1fr}}
/* phone font pass (+3px small text): keep tiles aligned, let doc names wrap, keep top dots clear of the larger quadrant labels */
@media (max-width:600px){
  .ai-el-t b{margin-top:4px}
  .ai-qd-dot[style*="--x:5"] span{left:auto;right:12px}
  .ai-lt-doc b{white-space:normal;overflow-wrap:anywhere;line-height:1.2}
  .ai-lt-cite span{align-items:flex-start}
  .ai-qd-dot[style*="--y:86"],.ai-qd-dot[style*="--y:90"]{bottom:calc(var(--y) * 1% - 30px)}
}