[hidden]{display:none!important}
.eng-heading{display:flex;justify-content:space-between;align-items:center;gap:24px;padding:20px 0 24px}
.eng-heading h1{margin:8px 0}.eng-heading p{max-width:65ch;color:var(--muted)}
.eng-picker{min-width:270px}.eng-picker label{display:block;font-size:.78rem;font-weight:600;margin-bottom:7px}
.eng-picker>div{display:flex;gap:8px}.eng-picker select{font:inherit;min-width:0;width:100%;background:var(--panel);color:var(--ink);border:1px solid var(--line);border-radius:4px;padding:10px}
.eng-catalog{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.eng-product-card{display:flex;flex-direction:column;gap:14px;border:1px solid var(--line);border-radius:8px;padding:24px;background:var(--panel);text-decoration:none;color:var(--ink);transition:border-color .15s,transform .15s}
.eng-product-card:hover{border-color:var(--accent);transform:translateY(-2px)}
.eng-product-card h2{font-family:var(--display);font-size:1.8rem;margin:0}.eng-product-card p{color:var(--muted);margin:0;font-size:.9rem}.eng-product-card .eng-go{margin-top:auto;color:var(--accent);font-size:.85rem;font-weight:600}
.eng-badge{font-family:var(--mono);font-size:.7rem;letter-spacing:.04em;color:var(--accent);text-transform:uppercase}
.eng-selected{display:flex;justify-content:space-between;align-items:center;gap:20px;padding:22px 24px;margin-bottom:20px;background:var(--panel);border:1px solid var(--line);border-left:4px solid var(--accent);border-radius:6px}
.eng-selected h2{font:800 clamp(1.7rem,3vw,2.6rem)/1.1 var(--display);margin:8px 0}.eng-selected p{margin:0;color:var(--muted);max-width:75ch;font-size:.9rem}
.eng-actions{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin:12px 0}.eng-actions .btn{white-space:nowrap}
.eng-layout{display:grid;grid-template-columns:215px minmax(0,1fr);gap:18px;align-items:start}
.eng-tablist{display:grid;gap:5px;position:sticky;top:80px}.eng-tablist button{display:flex;gap:10px;align-items:center;text-align:left;font:500 .83rem var(--sans);padding:14px 12px;border:1px solid transparent;border-radius:5px;background:transparent;color:var(--muted);cursor:pointer}.eng-tablist button[aria-selected=true]{background:var(--accent-soft);color:var(--accent);border-color:var(--accent)}
.eng-panel{background:var(--panel);border:1px solid var(--line);border-radius:8px;padding:clamp(18px,3vw,36px);min-width:0}
.eng-panels>.eng-panel{max-height:calc(100dvh - 160px);overflow:auto;overscroll-behavior:contain;scrollbar-gutter:stable}
.eng-panel h2{font:800 clamp(1.6rem,2.6vw,2.3rem)/1.15 var(--display);margin:9px 0 18px;color:var(--ink);text-transform:none;letter-spacing:0}
.eng-panel h3{font:600 1.05rem/1.4 var(--sans);margin:22px 0 10px}.eng-panel p{font-size:.93rem;line-height:1.75}.eng-panel .eng-lead{font-size:1.05rem;max-width:85ch;color:var(--ink-2)}
.eng-metrics{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));margin:24px 0;border-block:1px solid var(--line);padding:20px 0;gap:16px}.eng-metrics b{display:block;font:800 2rem var(--display);color:var(--accent)}.eng-metrics span{font-size:.77rem;color:var(--muted)}
.eng-flow{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.eng-flow article,.eng-two article{background:var(--paper);padding:20px;border-radius:5px}.eng-flow article>span{font:500 .7rem var(--mono);color:var(--accent)}.eng-flow h3,.eng-two h3{margin:8px 0}.eng-flow p,.eng-two p{margin:0;font-size:.86rem}
.eng-two{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:18px 0}
.eng-note{padding:16px 18px;border-left:3px solid var(--accent);background:var(--accent-soft);font-size:.88rem;line-height:1.7;margin:22px 0}.eng-muted{color:var(--muted);font-size:.82rem}
.eng-table{overflow-x:auto;margin:15px 0}.eng-table table{width:100%;border-collapse:collapse;font-size:.84rem}.eng-table th,.eng-table td{padding:12px 10px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top;min-width:85px}.eng-table thead th{font-size:.75rem;color:var(--muted);background:var(--paper);position:sticky;top:0}.eng-table td:last-child{min-width:180px}
.eng-search{display:grid;gap:7px;font-size:.8rem;margin:20px 0}.eng-search input{font:inherit;padding:12px;border:1px solid var(--line);background:var(--paper);color:var(--ink);border-radius:4px;max-width:480px}
.eng-drawing{overflow:auto;border:1px solid var(--line);background:#f2f5f9;max-height:65vh;border-radius:5px}.eng-drawing img{width:100%;height:auto;max-width:none;display:block}
.eng-steps{padding-left:24px}.eng-steps li{padding:8px 0;font-size:.93rem;line-height:1.7}
.eng-demo{display:grid;grid-template-columns:1.2fr 1fr;gap:24px;padding:22px;border:1px solid var(--line);border-radius:6px;margin:24px 0}.eng-demo label{display:block;font-size:.86rem;margin:18px 0}.eng-demo output{float:right;color:var(--accent);font-family:var(--mono)}.eng-demo input{display:block;width:100%;margin-top:12px;accent-color:var(--accent)}.eng-demo-result{background:var(--paper);padding:24px;display:flex;flex-direction:column;justify-content:center}.eng-demo-result b{font:800 2.6rem var(--display);color:var(--accent)}
.eng-downloads{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:24px 0}.eng-downloads a{display:flex;justify-content:space-between;gap:10px;padding:18px;border:1px solid var(--line);border-radius:4px;color:var(--ink);text-decoration:none}.eng-downloads span{font-size:.72rem;color:var(--muted)}
@media(max-width:1050px){.eng-catalog{grid-template-columns:1fr 1fr}.eng-layout{grid-template-columns:180px minmax(0,1fr)}.eng-flow{grid-template-columns:1fr}.eng-selected{align-items:start;flex-direction:column}}
@media(max-width:700px){.eng-heading{flex-direction:column;align-items:stretch}.eng-picker{min-width:0}.eng-catalog{grid-template-columns:1fr}.eng-layout{display:block}.eng-tablist{position:static;display:flex;overflow-x:auto;margin-bottom:12px;padding-bottom:6px}.eng-tablist button{flex-shrink:0;white-space:nowrap}.eng-metrics{grid-template-columns:1fr 1fr}.eng-two,.eng-demo,.eng-downloads{grid-template-columns:1fr}.eng-panels>.eng-panel{max-height:none}.eng-selected{padding:18px}.eng-panel{padding:18px}.eng-demo{padding:16px}.eng-drawing{max-height:none}}
@media(prefers-reduced-motion:reduce){.eng-product-card{transition:none}}