.fuk-guide{scroll-margin-top:150px}.fuk-guide .fg-intro{max-width:850px;font-size:18px;line-height:1.7;margin:20px 0 34px}.fg-grids{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}.fg-card{border:1px solid #d9dfd8;border-radius:8px;overflow:hidden;background:#fff;display:flex;flex-direction:column}.fg-photo{height:220px;padding:30px;background:#f1f4ee;display:flex;align-items:center;justify-content:center}.fg-photo img{width:100%;height:100%;object-fit:contain}.fg-copy{padding:26px;display:flex;flex:1;flex-direction:column}.fuk-guide h3{font-size:22px;line-height:1.3;margin:0 0 14px}.fuk-guide p{line-height:1.7}.fg-copy p{margin:0 0 20px}.fg-copy a{margin-top:auto}.fuk-guide a:not(.fg-marker){color:#b22b18;font-weight:650;text-underline-offset:4px}.fg-damping{display:grid;grid-template-columns:260px 1fr;gap:36px;align-items:center;background:#eaf0e4;padding:32px;margin-top:28px;border-radius:8px}.fg-damping img{width:100%;height:160px;object-fit:contain}.fg-damping p{margin:0 0 14px}.fg-build{margin-top:80px}.fg-diagram{margin:36px 0;background:#f1f4ee;border:1px solid #d9dfd8;border-radius:8px;padding:35px}.fg-diagram-image{position:relative;max-width:850px;margin:auto}.fg-diagram-image>img{display:block;width:100%;height:auto}.fg-marker,.fg-number{background:#b52b18;color:#fff!important;border:3px solid #fff;border-radius:50%;width:36px;height:36px;display:flex;align-items:center;justify-content:center;font-weight:700;text-decoration:none;box-shadow:0 2px 8px #0002;flex-shrink:0}.fg-marker{position:absolute;left:var(--x);top:var(--y);transform:translate(-50%,-50%)}.fg-marker:hover,.fg-marker:focus-visible{background:#702013;outline:3px solid #b52b18;outline-offset:3px}.fg-diagram figcaption{font-size:14px;color:#536257;margin-top:26px}.fg-parts{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:26px 40px;list-style:none;padding:0;margin:0}.fg-parts li{display:flex;gap:14px;scroll-margin-top:160px}.fg-parts h3{font-size:19px;margin:3px 0 8px}.fg-parts p{margin:0}.fg-parts li:target{background:#eaf0e4;border-radius:8px;outline:10px solid #eaf0e4}.fg-note{font-size:14px;color:#59665f;border-top:1px solid #d9dfd8;margin-top:36px;padding-top:20px}@media(max-width:650px){.fg-grids,.fg-parts,.fg-damping{grid-template-columns:1fr}.fg-photo{height:180px;padding:24px}.fg-damping{padding:24px;gap:20px}.fg-damping img{height:130px}.fg-copy{padding:22px}.fg-build{margin-top:52px}.fg-diagram{padding:20px 10px}.fg-marker{width:29px;height:29px;font-size:13px;border-width:2px}.fg-diagram figcaption{padding:0 10px}.fuk-guide .fg-intro{font-size:17px}.fuk-guide h3{font-size:21px}.fg-parts h3{font-size:19px}}

/* FK 3.3: assembled CAD cutaway with explanations beside the tool. */
.fg-cutaway{margin:38px 0 0}.fg-cutaway-board{position:relative;padding:0;background:linear-gradient(90deg,transparent 27%,#f0f3ed 27%,#f0f3ed 73%,transparent 73%);border-radius:10px}.fg-cutaway-image{position:relative;width:42%;margin:0 auto}.fg-cutaway-image>img{display:block;width:100%;height:auto}.fg-cutaway-lines{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;overflow:visible}.fg-cutaway-lines polyline{fill:none;stroke:#a64a33;stroke-width:1.2;vector-effect:non-scaling-stroke}.fg-cutaway-note{position:absolute;top:var(--note-top);width:26%;display:flex;align-items:flex-start;gap:10px;padding:14px 0;scroll-margin-top:160px}.fg-cutaway-left{left:0}.fg-cutaway-right{right:0}.fg-cutaway-note h3{font-size:19px;line-height:1.3;margin:4px 0 9px}.fg-cutaway-note p{font-size:16px;line-height:1.6;margin:0}.fg-cutaway-note .fg-number{width:30px;height:30px;font-size:14px}.fg-cutaway-note:target{background:#edf2e7;outline:8px solid #edf2e7;border-radius:5px}.fg-cutaway figcaption{color:#536257;font-size:14px;line-height:1.6;margin-top:44px;max-width:950px}.fg-cutaway .fg-marker{width:30px;height:30px;font-size:14px;border-width:2px}
@media(max-width:1200px){.fg-cutaway-board{display:grid;grid-template-columns:1fr 1fr;gap:20px;background:none}.fg-cutaway-image{grid-column:1/-1;width:min(100%,430px);background:#f0f3ed;border-radius:10px}.fg-cutaway-note{position:static;width:auto;padding:12px 0}.fg-cutaway-lines{display:none}.fg-cutaway-note h3{font-size:19px}.fg-cutaway figcaption{margin-top:24px}}@media(max-width:600px){.fg-cutaway-board{grid-template-columns:1fr;gap:8px}.fg-cutaway-image{max-width:330px}.fg-cutaway-note{gap:12px}.fg-cutaway figcaption{font-size:13px}}