/* ==================================================================
   PRODUCTS & SYSTEMS — hub 2-cards, systems library, 3D system detail
   ================================================================== */
.hub2{display:grid;grid-template-columns:1fr 1fr;gap:22px}
@media(max-width:760px){.hub2{grid-template-columns:1fr}}
.hubcard{--g:#2E5A8F;display:block;background:#fff;border:1px solid var(--line);border-top:5px solid var(--g);padding:30px 30px 26px;transition:.18s;color:inherit}
.hubcard:hover{transform:translateY(-4px);box-shadow:0 20px 44px rgba(20,17,20,.13);border-color:color-mix(in srgb,var(--g) 40%,var(--line))}
.hubtop{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.hubicon{width:52px;height:52px;display:grid;place-items:center;font-size:24px;background:color-mix(in srgb,var(--g) 12%,#fff);color:var(--g)}
.hubtag{font-size:11px;font-weight:800;letter-spacing:.06em;text-transform:uppercase;color:var(--g)}
.hubcard h2{font-size:26px;letter-spacing:-.02em;color:var(--black);margin:0 0 10px}
.hubcard p{font-size:14.5px;color:var(--grey);line-height:1.6;margin:0 0 18px}
.hubmeta{font-size:14px;color:var(--grey);font-weight:600;display:flex;align-items:center;gap:6px;border-top:1px solid var(--line);padding-top:15px}
.hubmeta b{color:var(--g);font-size:17px}.hubmeta .arr{margin-left:auto;color:var(--g);font-weight:800;transition:.16s}
.hubcard:hover .arr{transform:translateX(4px)}

.sys-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(270px,1fr));gap:16px}
.sys-card{--g:#2E5A8F;display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);overflow:hidden;transition:.16s;color:inherit}
.sys-card:hover{transform:translateY(-3px);box-shadow:0 14px 30px rgba(20,17,20,.12);border-color:color-mix(in srgb,var(--g) 35%,var(--line))}
.sys-strata{height:64px;background:linear-gradient(160deg,color-mix(in srgb,var(--g) 8%,#fff),color-mix(in srgb,var(--g) 20%,#fff));display:flex;flex-direction:column;justify-content:center;gap:3px;padding:12px 16px}
.sys-strata span{height:5px;background:var(--g);border-radius:2px;width:100%}
.sys-body{padding:15px 16px 17px}
.sys-top{display:flex;align-items:center;gap:8px;margin-bottom:8px}
.sys-badge{font-size:10.5px;font-weight:800;letter-spacing:.04em;text-transform:uppercase;color:var(--g);background:color-mix(in srgb,var(--g) 12%,#fff);padding:3px 9px;border-radius:20px}
.sys-3d{font-size:10.5px;font-weight:800;color:var(--grey);margin-left:auto}
.sys-card h4{font-size:16.5px;letter-spacing:-.01em;color:var(--black);margin:0 0 5px}
.sys-card p{font-size:13px;color:var(--grey);line-height:1.45;margin:0 0 10px}
.sys-resin{font-size:11px;font-weight:700;color:var(--g);text-transform:uppercase;letter-spacing:.04em}

/* 3D system detail */
.sys3d{display:grid;grid-template-columns:1.3fr .7fr;gap:36px;align-items:start}
@media(max-width:900px){.sys3d{grid-template-columns:1fr}}
.scene{height:470px;display:flex;align-items:center;justify-content:center;perspective:2300px;cursor:grab;position:relative;background:#fff;border:1px solid var(--line);overflow:hidden}
.scene:active{cursor:grabbing}
.scene .wm{position:absolute;right:-10px;bottom:-38px;font-size:10rem;font-weight:900;letter-spacing:-.05em;color:var(--g-2);line-height:1;pointer-events:none;user-select:none}
.gshadow{position:absolute;left:50%;top:67%;width:460px;height:120px;transform:translate(-50%,-50%);background:radial-gradient(ellipse,rgba(20,17,20,.16),transparent 70%);filter:blur(9px)}
.world{position:relative;width:420px;height:280px;transform-style:preserve-3d;will-change:transform;--gap:0px;--mid:2;transition:transform .1s linear}
.world.exploded{--gap:60px}
.sheet{position:absolute;left:50%;top:50%;width:0;height:0;transform-style:preserve-3d;transform:translateZ(calc(var(--z0) + (var(--i) - var(--mid,0))*var(--gap)));transition:transform .5s cubic-bezier(.2,.85,.25,1),filter .25s}
.sheet.hot{filter:brightness(1.14)}
.face{position:absolute}
.f-top{width:420px;height:280px;margin:-140px 0 0 -210px;transform:translateZ(calc(var(--h)/2));background:var(--col);border-radius:9px;box-shadow:0 0 0 1px rgba(255,255,255,.3) inset,0 34px 46px -24px rgba(20,17,20,.4);overflow:hidden}
.f-top::after{content:"";position:absolute;inset:0;background:linear-gradient(125deg,rgba(255,255,255,.42),rgba(255,255,255,0) 46%)}
.f-bot{width:420px;height:280px;margin:-140px 0 0 -210px;transform:translateZ(calc(var(--h)/-2));background:var(--colB)}
.f-front{width:420px;height:var(--h);margin:calc(var(--h)/-2) 0 0 -210px;transform:rotateX(90deg) translateZ(140px);background:var(--colS)}
.f-back{width:420px;height:var(--h);margin:calc(var(--h)/-2) 0 0 -210px;transform:rotateX(-90deg) translateZ(140px);background:var(--colS)}
.f-right{width:var(--h);height:280px;margin:-140px 0 0 calc(var(--h)/-2);transform:rotateY(90deg) translateZ(210px);background:var(--colS2)}
.f-left{width:var(--h);height:280px;margin:-140px 0 0 calc(var(--h)/-2);transform:rotateY(-90deg) translateZ(210px);background:var(--colS2)}
/* materials */
.glass .f-top{box-shadow:0 0 0 1px rgba(255,255,255,.5) inset}
.glass .f-top::after{background:linear-gradient(125deg,rgba(255,255,255,.6),rgba(255,255,255,0) 55%)}
.aggregate .f-top{background-image:radial-gradient(circle at 18% 22%,rgba(60,50,40,.5) 0 2px,transparent 2.6px),radial-gradient(circle at 52% 40%,rgba(255,255,255,.5) 0 2px,transparent 2.6px),radial-gradient(circle at 78% 26%,rgba(40,35,30,.5) 0 1.8px,transparent 2.4px),radial-gradient(circle at 34% 72%,rgba(255,255,255,.4) 0 2px,transparent 2.6px),radial-gradient(circle at 86% 78%,rgba(40,35,30,.45) 0 1.8px,transparent 2.4px);background-size:34px 34px;background-color:var(--col)}
.copper .f-top{background-color:transparent;background-image:repeating-linear-gradient(0deg,rgba(184,115,51,.95) 0 9px,transparent 9px 46px),repeating-linear-gradient(90deg,rgba(184,115,51,.95) 0 9px,transparent 9px 46px)}
.copper .f-top::after{display:none}
.mesh .f-top{background-image:linear-gradient(0deg,rgba(255,255,255,.5) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.5) 1px,transparent 1px);background-size:11px 11px;background-color:var(--col)}
.scenefoot{display:flex;align-items:center;justify-content:center;gap:12px;margin-top:14px;flex-wrap:wrap}
.scenehint{font-size:12.5px;color:var(--grey);margin-right:4px}
.s3toggle{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:.04em;background:var(--ink,#191619);color:#fff;border:1px solid var(--ink,#191619);padding:9px 16px;cursor:pointer;transition:.15s}
.s3toggle.ghost{background:#fff;color:var(--ink,#191619);border-color:var(--line)}
.s3toggle.ghost:hover{border-color:var(--g);color:var(--g)}.s3toggle.ghost.on{background:var(--g-1);color:var(--g);border-color:var(--g)}
.buildhd{font-size:12px;font-weight:800;letter-spacing:.08em;text-transform:uppercase;color:var(--grey);margin-bottom:12px}
.layerlist{display:flex;flex-direction:column;border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:#fff}
.lyr{display:flex;align-items:center;gap:12px;padding:12px 14px;border-bottom:1px solid var(--line);transition:background .15s}
.lyr:last-child{border-bottom:none}.lyr:nth-child(even){background:var(--sand,#FBFBF9)}
.lyr:hover,.lyr.hot{background:var(--g-1)}
.lyr .ln{width:25px;height:25px;border-radius:7px;background:var(--ink,#191619);color:#fff;font-size:12px;font-weight:800;display:grid;place-items:center;flex-shrink:0}
.lyr .lsw{width:25px;height:25px;border-radius:7px;flex-shrink:0;box-shadow:inset 0 0 0 1px rgba(0,0,0,.12)}
.lyr .pn{font-weight:800;font-size:14px;letter-spacing:-.01em;line-height:1.2}
.lyr .rl{font-size:11.5px;color:var(--grey);margin-top:1px}
.lyr .go{margin-left:auto;color:var(--g);font-weight:800;font-size:12px}

/* component list (non-layered systems) */
.complist{border:1px solid var(--line);max-width:760px}
.comprow{display:flex;align-items:center;gap:14px;padding:15px 18px;border-bottom:1px solid var(--line)}
.comprow:last-child{border-bottom:none}.comprow--sub{background:var(--sand,#FBFBF9)}
.compnum{width:26px;height:26px;border-radius:7px;background:var(--g);color:#fff;font-size:12px;font-weight:800;display:grid;place-items:center;flex-shrink:0}
.compsw{width:26px;height:26px;border-radius:7px;flex-shrink:0;box-shadow:inset 0 0 0 1px rgba(0,0,0,.1)}
.compmain{flex:1;min-width:0}
.comprole{font-size:10.5px;font-weight:800;letter-spacing:.05em;text-transform:uppercase;color:var(--g)}
.compname{font-size:15px;font-weight:800;color:var(--black);margin:2px 0}
.compfn{font-size:12.5px;color:var(--grey)}
.compgo{color:var(--g);font-weight:800;font-size:12.5px;white-space:nowrap}

.doc-card{display:flex;align-items:center;gap:11px;border:1px solid var(--line);border-radius:11px;padding:13px 16px;min-width:230px;transition:.15s;color:inherit}
.doc-card:hover{border-color:var(--g);transform:translateY(-2px)}
.doc-card .dic{width:34px;height:42px;border-radius:6px;background:var(--red);color:#fff;display:grid;place-items:center;font-size:9px;font-weight:800;flex-shrink:0}
.doc-card .dic.gcol{background:var(--g)}
.doc-card b{font-size:13.5px}.doc-card small{display:block;color:var(--grey);font-size:12px}