@font-face{font-family:Suisse;src:url('assets/suisse-intl.ttf') format('truetype');font-weight:400;font-display:swap}
@font-face{font-family:Suisse;src:url('assets/suisse-intl-light.otf') format('opentype');font-weight:300;font-display:swap}
:root{--ink:#151515;--muted:#555;--rule:#d8d8d3;--coral:#fd6060}
*{box-sizing:border-box}
body{margin:0;background:transparent;color:var(--ink);font-family:Suisse,'Helvetica Neue',Arial,sans-serif}
main{max-width:1600px;margin:auto;padding:26px clamp(20px,4vw,64px) 72px}
.option{max-width:1150px;margin:auto;min-width:0}
.review-controls,.actions{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
.review-controls{font:11px/1.5 monospace;margin-bottom:22px}
.actions{justify-content:flex-start}
button{font:12px/1.3 monospace;color:#333;border:1px solid #c9c9c4;background:transparent;min-height:44px;padding:10px 14px;cursor:pointer}
button:hover,button[aria-pressed=true]{background:var(--ink);color:#fafaf8}
button:focus-visible,.stage:focus-visible{outline:2px solid var(--ink);outline-offset:4px}
.stage{position:relative;width:100%;aspect-ratio:1.6;max-height:690px;touch-action:pan-y}
.stage svg{position:relative;z-index:1;width:100%;height:100%;display:block;overflow:hidden}
.assembly-canvas{position:absolute;inset:0;width:100%;height:100%;pointer-events:none}
.depth-scene .assembly-base,.depth-scene .assembly-objects,.depth-scene .assembly-beam{display:none}
.static-scene{cursor:default!important}
svg [role=button]{cursor:pointer}
svg [role=button]:focus{outline:none}
svg [role=button]:focus-visible circle{stroke:#555;stroke-dasharray:3 4;stroke-width:1;outline:none}
.hint{font:11px/1.5 monospace;color:var(--muted);margin:0}
.intro{border-top:1px solid var(--rule);padding-top:48px;margin-top:68px}
h1{max-width:1150px;font-size:clamp(30px,3.7vw,56px);font-weight:400;letter-spacing:-.04em;line-height:1.1;margin:0}
.intro em{font-style:normal;color:#666}
.body-copy{display:grid;grid-template-columns:1fr 1fr;gap:44px;margin-top:28px}
.body-copy p{font-size:17px;line-height:1.7;color:var(--muted);margin:0}
.visual-only main{padding:0;max-width:none}
.visual-only .review-controls,.visual-only .hint,.visual-only .intro{display:none}
@media(max-width:900px){.body-copy{grid-template-columns:1fr;gap:22px}}
@media(max-width:400px){button{font-size:11px;padding:9px 11px}.stage{margin:0 -8px;width:calc(100% + 16px)}.hint{font-size:10px}.visual-only .stage{margin:0;width:100%}}