:root{--ink:#f0f0e8;--muted:#aab1a4;--line:#3d4b3b;--panel:#111a10;--page:#080b09;--accent:#dfe4d7;--olive:#8da07e}
*{box-sizing:border-box}
html{background:var(--page);scroll-behavior:smooth}
body{margin:0;color:var(--ink);background:radial-gradient(circle at 80% 4%,#152014 0,transparent 30rem),var(--page);font-family:Arial,Helvetica,sans-serif;line-height:1.5}
a{color:inherit}
.topbar{height:88px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 clamp(20px,5vw,76px);position:relative;z-index:2}
.brand{display:flex;align-items:center;gap:13px;text-decoration:none;font-size:12px;font-weight:700;letter-spacing:.18em}
.brand img{width:43px;height:43px;object-fit:contain}
.back-link{font-size:13px;text-underline-offset:7px;text-decoration-color:var(--olive)}
main{width:min(1380px,calc(100% - 40px));margin:0 auto}
.intro{padding:clamp(64px,9vw,132px) 0 clamp(46px,6vw,82px);max-width:1050px}
.eyebrow,.step{margin:0 0 19px;color:#a9b99b;font-size:12px;font-weight:700;letter-spacing:.24em}
h1,h2,p{margin-top:0}
h1{margin-bottom:30px;font-size:clamp(52px,8vw,120px);font-weight:400;letter-spacing:-.065em;line-height:.88}
.lede{max-width:820px;margin:0;color:var(--muted);font-size:clamp(18px,2vw,25px);line-height:1.55}
.compare{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}
.preview-card{border:1px solid var(--line);background:#0d120d;padding:clamp(15px,2vw,28px)}
.preview-card.enhanced{background:linear-gradient(145deg,#111b10,#0b100c);box-shadow:0 24px 90px rgba(0,0,0,.42)}
.card-heading{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;padding:3px 2px 23px}
.card-heading .step{margin-bottom:6px}
.card-heading h2{margin:0;font-size:clamp(21px,2.3vw,34px);font-weight:400;letter-spacing:-.035em}
.badge{border:1px solid #566154;color:#9fa89c;padding:8px 10px;font-size:10px;letter-spacing:.16em}
.badge.active{background:var(--accent);border-color:var(--accent);color:#11160f}
.canvas-shell{position:relative;overflow:hidden;aspect-ratio:1;border:1px solid #343e32;background:#111}
.canvas-shell canvas{display:block;width:100%;height:100%}
.canvas-shell.interactive{cursor:crosshair;touch-action:none}
.touch-instruction{display:flex;align-items:center;gap:10px;margin:-4px 2px 15px;color:#dfe4d7;font-size:13px}
.touch-instruction span{display:block;width:14px;height:14px;border:1px solid #dfe4d7;border-radius:50%;box-shadow:0 0 14px rgba(223,228,215,.7)}
.light-handle{position:absolute;left:calc(var(--light-x,68)*1%);top:calc(var(--light-y,23)*1%);width:38px;height:38px;border:1px solid rgba(255,255,255,.8);border-radius:50%;transform:translate(-50%,-50%);pointer-events:none;box-shadow:0 0 0 8px rgba(255,255,255,.09),0 0 28px rgba(255,255,255,.85);transition:opacity .25s}
.light-handle:before,.light-handle:after{content:"";position:absolute;left:50%;top:50%;background:rgba(255,255,255,.8);transform:translate(-50%,-50%)}
.light-handle:before{width:54px;height:1px}.light-handle:after{width:1px;height:54px}
.light-cue{position:absolute;left:50%;bottom:18px;transform:translateX(-50%);padding:11px 14px;background:rgba(7,10,7,.82);border:1px solid rgba(223,228,215,.62);font-size:10px;letter-spacing:.18em;pointer-events:none;transition:opacity .25s;white-space:nowrap}
.interactive.engaged .light-cue{opacity:0}
.card-note{margin:21px 2px 1px;color:var(--muted);font-size:14px}
.legend{display:grid;grid-template-columns:minmax(250px,.85fr) minmax(400px,1.15fr);gap:clamp(45px,8vw,130px);padding:clamp(80px,11vw,150px) 0;border-bottom:1px solid var(--line)}
.legend-intro h2,.decision h2{font-size:clamp(35px,5vw,69px);line-height:1;letter-spacing:-.055em;font-weight:400;margin-bottom:27px}
.legend-intro>p:last-child,.decision p{color:var(--muted);max-width:600px}
.swatches{border-top:1px solid var(--line)}
.swatch-row{display:grid;grid-template-columns:72px 1fr;align-items:center;gap:21px;padding:22px 0;border-bottom:1px solid var(--line)}
.swatch-row i{display:block;width:72px;height:52px;background:var(--swatch);border:1px solid rgba(255,255,255,.22);position:relative;overflow:hidden}
.swatch-row i.metal:after{content:"";position:absolute;inset:0;background:radial-gradient(circle at 25% 30%,rgba(255,255,255,.32) 0 1px,transparent 2px),radial-gradient(circle at 70% 65%,rgba(255,255,255,.22) 0 1px,transparent 2px);background-size:11px 13px,15px 9px}
.swatch-row i.gloss:after{content:"";position:absolute;inset:-20% 20%;background:linear-gradient(110deg,transparent 25%,rgba(255,255,255,.75) 47%,transparent 68%);transform:skewX(-16deg)}
.swatch-row strong,.swatch-row span{display:block}.swatch-row strong{font-size:16px;font-weight:400}.swatch-row span{margin-top:4px;color:var(--muted);font-size:13px}
.decision{display:flex;align-items:flex-end;justify-content:space-between;gap:50px;padding:clamp(80px,11vw,150px) 0 70px}
.decision h2{max-width:750px;margin-bottom:18px}
.button{display:inline-flex;align-items:center;justify-content:center;min-height:62px;min-width:230px;padding:15px 25px;background:var(--accent);color:#11160f;text-decoration:none;white-space:nowrap}
.disclaimer{padding:0 0 50px;color:#7f887c;font-size:12px;max-width:800px}
@media(max-width:760px){
  .topbar{height:72px;padding:0 18px}.brand span{display:none}.brand img{width:39px;height:39px}.back-link{font-size:12px}
  main{width:min(100% - 28px,1380px)}.intro{padding-top:64px}.compare{grid-template-columns:1fr}.preview-card{padding:12px}.card-heading{padding:4px 2px 16px}
  .legend{grid-template-columns:1fr;gap:42px}.swatch-row{grid-template-columns:60px 1fr}.swatch-row i{width:60px}
  .touch-instruction{padding:12px 13px;margin:0 0 12px;background:#182217;border:1px solid #53634e;font-size:14px;line-height:1.35}
  .light-handle{width:44px;height:44px;box-shadow:0 0 0 10px rgba(255,255,255,.11),0 0 34px rgba(255,255,255,.9)}
  .light-cue{bottom:14px;font-size:11px;padding:12px 16px}
  .decision{align-items:stretch;flex-direction:column}.button{width:100%}
}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}