.spine-section{color:#173b32;background:#e8eeea;padding:100px max(5vw,24px) 34px;scroll-margin-top:90px}.spine-explorer{grid-template-columns:minmax(240px,1fr) minmax(260px,1.15fr) minmax(265px,1fr);align-items:center;column-gap:clamp(20px,3vw,60px);max-width:1320px;margin:0 auto;display:grid}.spine-intro h2{letter-spacing:-.04em;margin:0 0 26px;font-size:clamp(38px,4vw,58px);font-weight:450;line-height:1.05}.spine-intro>p{color:#4c655b;margin:0 0 36px;font-size:16px;line-height:1.7}.spine-region-list{flex-direction:column;display:flex}.spine-region-button{appearance:none;color:#4c655b;text-align:left;width:100%;font:inherit;cursor:pointer;background:0 0;border:0;border-bottom:1px solid #bdcec5;justify-content:space-between;align-items:center;gap:16px;padding:19px 0;transition:color .2s;display:flex}.spine-region-button strong{font-size:19px;font-weight:500;display:block}.spine-region-button small{margin-top:4px;font-size:12px;line-height:1.5;display:block}.spine-region-button>svg{opacity:.45;flex-shrink:0}.spine-region-button.is-selected{color:#136b55}.spine-region-button.is-selected strong{font-weight:650}.spine-region-button.is-selected>svg{opacity:1}.spine-region-button:hover{color:#136b55}.spine-region-button:focus-visible,.spine-contact:focus-visible{outline-offset:5px;outline:2px solid #136b55}.spine-visual{min-width:0;position:relative}.spine-stage{width:100%;height:610px;position:relative}.spine-stage canvas{touch-action:pan-y;width:100%;height:100%;display:block}.spine-stage--fallback canvas{display:none}.spine-level-label{font-variant-numeric:tabular-nums;border-bottom:1px solid #7c9f8e;padding:8px 0 8px 28px;font-size:12px;font-weight:550;position:absolute;bottom:120px;right:0}.spine-visual-hint{text-align:center;color:#4c655b;margin:-8px 0 0;font-size:12px;line-height:1.7}.spine-visual-hint span{color:#536c60;margin-top:3px;font-size:10px;display:block}.spine-detail{padding:36px 0}.spine-detail-region{color:#136b55;align-items:center;gap:9px;margin-bottom:25px;font-size:13px;font-weight:550;display:flex}.spine-region-dot{background:#136b55;border-radius:50%;width:7px;height:7px;display:inline-block}.spine-detail h3{letter-spacing:-.03em;text-wrap:balance;margin:0 0 22px;font-size:clamp(25px,2.55vw,34px);font-weight:450;line-height:1.17}.spine-detail>p{color:#4c655b;margin:0;font-size:14px;line-height:1.85}.spine-detail h4{margin:27px 0 9px;font-size:14px;font-weight:600}.spine-contact{color:#173b32;border-bottom:1px solid #7c9f8e;justify-content:space-between;align-items:center;gap:16px;margin-top:24px;padding:14px 0 11px;font-size:12px;font-weight:600;text-decoration:none;display:inline-flex}.spine-contact svg{flex-shrink:0;transition:transform .2s}.spine-contact:hover svg{transform:translate(3px)}.spine-disclaimer{color:#4c655b;border-top:1px solid #bdcec5;align-items:flex-start;gap:12px;max-width:1320px;margin:60px auto 0;padding-top:22px;display:flex}.spine-disclaimer>span{text-align:center;border:1px solid #7c9f8e;border-radius:50%;flex-shrink:0;width:16px;height:16px;font-family:Georgia,serif;font-size:12px;line-height:14px}.spine-disclaimer p{max-width:115ch;margin:0;font-size:11px;line-height:1.7}.spine-fallback-diagram{flex-direction:column;justify-content:center;align-items:center;gap:5px;display:flex;position:absolute;inset:28px 0 22px}.spine-fallback-diagram>span{background:#b7bdb0;border-radius:5px 5px 7px 7px;flex-shrink:0;height:13px}.spine-fallback-diagram>span.active{background:#398771}.spine-fallback-diagram>.spine-fallback-sacrum{border-radius:8px 8px 25px 25px;width:58px;height:50px}@media (min-width:1600px){.spine-stage{height:660px}}@media (max-width:1080px){.spine-section{padding:75px 5vw 30px}.spine-explorer{grid-template-columns:minmax(200px,.9fr) minmax(190px,1fr) minmax(220px,1fr);gap:22px}.spine-intro h2{font-size:42px}.spine-stage{height:550px}.spine-region-button strong{font-size:17px}.spine-detail h3{font-size:27px}.spine-detail>p{font-size:13px}}@media (max-width:800px){.spine-explorer{grid-template-columns:minmax(0,1fr) minmax(0,1.1fr);gap:0 24px}.spine-intro{grid-column:1/-1}.spine-intro h2{margin-bottom:20px;font-size:clamp(37px,7vw,53px)}.spine-intro h2 br{display:none}.spine-intro>p{margin-bottom:26px;font-size:15px}.spine-region-list{flex-direction:row;gap:18px}.spine-region-button{flex:1 1 0;align-items:flex-start;min-width:0;padding:16px 0}.spine-region-button strong{font-size:15px}.spine-region-button small{font-size:11px}.spine-region-button>svg{display:none}.spine-region-button.is-selected{border-bottom:2px solid #136b55;padding-left:0}.spine-stage{height:480px}.spine-detail{padding:35px 0 15px}.spine-detail h3{font-size:29px}.spine-level-label{bottom:90px;right:-8px}.spine-disclaimer{margin-top:42px}}@media (max-width:540px){.spine-section{padding:64px 22px 28px}.spine-explorer{flex-direction:column;align-items:stretch;display:flex}.spine-intro h2{letter-spacing:-.04em;font-size:39px}.spine-intro>p{font-size:14px}.spine-region-list{gap:12px}.spine-region-button{padding:13px 0}.spine-region-button strong{font-size:13px;line-height:1.3}.spine-region-button small{font-size:10px;line-height:1.4}.spine-stage{max-width:310px;height:360px;margin:5px auto 0}.spine-fallback-diagram{gap:3px}.spine-fallback-diagram>span{height:8px}.spine-fallback-diagram>.spine-fallback-sacrum{width:50px;height:35px}.spine-level-label{bottom:87px;right:15%}.spine-visual-hint{margin-top:0;font-size:11px}.spine-visual-hint span{font-size:9px}.spine-detail{padding:35px 0 0}.spine-detail-region{margin-bottom:16px}.spine-detail h3{max-width:24ch;margin-bottom:17px;font-size:31px}.spine-detail>p{font-size:14px;line-height:1.8}.spine-contact{font-size:13px}.spine-disclaimer{margin-top:35px}.spine-disclaimer p{font-size:10px}}@media (prefers-reduced-motion:reduce){.spine-region-button,.spine-contact svg{transition:none}}