#surface-explainer{scroll-margin-top:12px}
.surface-explainer{padding:30px!important;background:#f8f9f5!important;border:1px solid #dce0d2!important;border-radius:26px!important;color:#50563d;overflow:visible!important}
.surface-intro{display:flex;justify-content:space-between;align-items:center;gap:24px;margin-bottom:28px}.surface-intro>div{min-width:0}.surface-kicker{font-size:16.8px;font-weight:600;letter-spacing:.03em}
body main .surface-intro h3{font-size:34px!important;font-weight:700;line-height:1.45;margin:8px 0 10px;letter-spacing:-.035em}body main .surface-intro p{font-size:21.6px!important;line-height:1.7;margin:0}.surface-intro>img{width:95px;height:95px!important;flex-shrink:0;object-fit:contain}
.surface-steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:26px}.surface-card{position:relative;min-width:0;padding:22px 18px 20px;background:#fff;border:1px solid #dce0d3;border-radius:18px;display:flex;flex-direction:column}
.surface-step-heading{display:flex;align-items:center;gap:10px;min-height:70px}.surface-step-number{display:grid;place-items:center;width:36px;height:36px;border-radius:50%;background:#50563d;color:#fff;font-size:22px;flex-shrink:0;font-weight:700}
body main .surface-step-heading h3{font-size:24px!important;line-height:1.4;font-weight:700;letter-spacing:-.035em;margin:0}body main .surface-step-body{font-size:20px!important;line-height:1.65;min-height:100px;margin:12px 0 0!important;word-break:keep-all}
.surface-picture{position:relative;margin:0 -12px 8px;background:radial-gradient(ellipse at 50% 70%,#f0f1eb,transparent 70%);border-radius:12px;isolation:isolate}.surface-picture .three-stage{border-radius:0}.surface-picture canvas{pointer-events:none}.surface-picture .three-tools{display:none!important}
.surface-diagram-label{position:absolute;bottom:auto;right:auto;height:auto;min-height:0;letter-spacing:0;z-index:4;padding:5px 9px;background:#fffffff2;border:1px solid #b4bba3;border-radius:9px;font-size:17px;font-weight:700;line-height:1.4;white-space:nowrap;transform:translateX(-50%)}
.label-spray{left:21%;top:31%}.label-wall{left:68%;top:2%}.label-water{left:28%;top:2%;color:#21678d;border-color:#7ca5bc}.label-oxygen{left:69%;top:2%}.label-odor{left:50%;top:0;color:#92531a;border-color:#c9a07c}
.surface-guide-line{position:absolute;z-index:3;pointer-events:none;width:1px;background:#50563d}.line-spray{left:21%;top:45%;height:15%;transform:rotate(-18deg);transform-origin:top}.line-wall{left:68%;top:17%;height:18%}
.surface-down{position:absolute;top:46%;z-index:4;font-size:34px;line-height:1;font-weight:600;color:#50563d;transform:translateX(-50%)}.surface-down-left{left:31%}.surface-down-right{left:68%}
.surface-action{border-radius:9px;background:#edf0e6;padding:11px 8px;font-size:17px;line-height:1.7;font-weight:650;text-align:center;min-height:52px;display:grid;place-items:center}
.surface-card-caption{display:flex;flex-direction:column;gap:8px;margin-top:16px}.surface-card-caption strong{font-size:20px;line-height:1.5}.surface-card-caption>span{font-size:18px;line-height:1.7}.surface-next{position:absolute;left:100%;top:48%;width:26px;text-align:center;font-size:27px;font-weight:700;line-height:1;color:#50563d}
.surface-legend{display:flex;flex-wrap:wrap;gap:12px 24px;margin:25px 0 18px;font-size:17px;line-height:1.6}.surface-legend>span{display:flex;align-items:center;gap:8px}.surface-legend i{display:inline-block;width:13px;height:13px;border-radius:50%;flex-shrink:0}.surface-color-water{background:#2785ba}.surface-color-oxygen{background:#50563d}.surface-color-odor{background:#d98736}
body main .surface-summary{margin:0!important;padding:18px 20px;background:#e9eddf;border-radius:12px;font-size:21.6px!important;line-height:1.7;font-weight:600}
.surface-controls{display:flex;gap:12px;flex-wrap:wrap;align-items:center;margin-top:22px}.surface-controls button{font:inherit;font-size:17px;color:#50563d;background:#fff;border:1px solid #c4cbb7;border-radius:24px;padding:10px 18px;min-height:46px;cursor:pointer}.surface-controls>span{font-size:16px;margin-left:auto}
body main .surface-note{font-size:15.6px!important;line-height:1.8;margin:17px 0 0!important;color:#50563d}.surface-still{display:grid;place-items:center;min-height:200px;padding:24px;font-size:22px}
.surface-picture .graphic-recovery{font-size:21px}.surface-picture .graphic-recovery img{width:75px;height:75px}
@media(max-width:1000px){.surface-explainer{padding:24px!important}.surface-steps{gap:18px}.surface-card{padding:18px 13px}.surface-next{width:18px;font-size:23px}.surface-step-number{width:32px;height:32px;font-size:20px}body main .surface-step-heading h3{font-size:23px!important}.surface-action{font-size:16px}.surface-diagram-label{font-size:16px;padding:4px 7px}}
@media(max-width:760px){.surface-explainer{padding:22px 16px!important;border-radius:20px!important}.surface-intro{gap:12px;margin-bottom:24px;align-items:flex-start}.surface-intro>img{width:62px;height:62px!important}.surface-kicker{font-size:15px}body main .surface-intro h3{font-size:28px!important;line-height:1.45}body main .surface-intro p{font-size:20.4px!important}.surface-steps{grid-template-columns:1fr;gap:38px}.surface-card{padding:20px 17px}.surface-step-heading{min-height:0}body main .surface-step-heading h3{font-size:26px!important}body main .surface-step-body{min-height:0;font-size:20.4px!important;margin:12px 0 18px!important}.surface-step-number{width:36px;height:36px;font-size:22px}.surface-picture{margin-inline:-8px}.surface-diagram-label{font-size:18px;padding:5px 10px}.surface-action{font-size:17px}.surface-card-caption strong{font-size:21px}.surface-card-caption>span{font-size:19px}.surface-next{left:50%;top:100%;width:38px;height:38px;transform:translateX(-50%) rotate(90deg);display:grid;place-items:center;font-size:30px}.surface-legend{font-size:16px;gap:10px}.surface-controls{gap:10px}.surface-controls button{font-size:16px;padding:10px 13px}.surface-controls>span{margin:5px 0 0;width:100%}body main .surface-summary{font-size:20.4px!important;padding:18px 16px}body main .surface-note{font-size:15.6px!important}}