.science-page{background:#f6f8f0}.science-header{position:sticky;top:0;z-index:30;border-bottom:1px solid #d9e3d6;background:#fbfdf7ed;backdrop-filter:blur(20px)}.science-header>.wrap{display:flex;align-items:center;justify-content:space-between;min-height:88px;gap:26px}.science-brand{display:flex;align-items:center;gap:24px}.science-brand img{width:135px;height:57px;object-fit:cover;object-position:center}.science-brand span{border-left:1px solid #c1d0bf;padding-left:22px;font-size:14px;letter-spacing:.12em}.science-header nav{display:flex;gap:30px;font-size:14px}.science-header nav a{padding:26px 0}.science-header nav a[aria-current]{color:var(--green);box-shadow:inset 0 -2px var(--green)}.science-intro{padding-top:76px;padding-bottom:50px}.science-intro h1{font-size:clamp(38px,4.5vw,60px);line-height:1.4}.science-intro>p:last-child{font-size:17px;margin-top:24px;max-width:700px}.explorer{display:grid;grid-template-columns:1.06fr 1fr;gap:44px;align-items:start}.diagram-panel{position:sticky;top:110px;background:linear-gradient(150deg,#fffefa,#e4ecdf);border:1px solid #cddac7;border-radius:24px;padding:22px 16px 25px;box-shadow:0 25px 55px -38px #174c32,0 2px 4px #164b3010;overflow:hidden}.diagram-panel:before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse at 80% 10%,#ffffffbb,transparent 50%);pointer-events:none}.diagram-top{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:0 10px;position:relative;z-index:1;color:#456e52;font-size:13px}.motion-toggle{border:1px solid #bdceba;border-radius:30px;background:#ffffff85;padding:7px 13px;color:#51765b;font-size:12px;white-space:nowrap}.skin-svg{display:block;width:100%;height:auto;overflow:visible}.skin-layer{transition:opacity .6s,transform .7s cubic-bezier(.2,.6,.3,1);transform-box:fill-box;transform-origin:center}.explorer[data-layer-active="epidermis"] .layer-epidermis,.explorer[data-layer-active="dermis"] .layer-dermis,.explorer[data-layer-active="subcutis"] .layer-subcutis{transform:translateY(-9px)}.explorer[data-layer-active="epidermis"] .layer-dermis,.explorer[data-layer-active="epidermis"] .layer-subcutis,.explorer[data-layer-active="dermis"] .layer-epidermis,.explorer[data-layer-active="dermis"] .layer-subcutis,.explorer[data-layer-active="subcutis"] .layer-epidermis,.explorer[data-layer-active="subcutis"] .layer-dermis{opacity:.47}.water-particles circle{animation:water-rise 4s ease-in-out infinite;animation-delay:calc(var(--i)*-.7s)}.collagen-fibers{stroke-dasharray:180 18;animation:fiber-flow 15s linear infinite}.ground-shadow{transform-origin:center;animation:shadow-soft 7s ease-in-out infinite}.diagram-note{text-align:center;padding:0 18px;font-size:12px;line-height:1.8;color:#71826f;position:relative}.explorer-options{display:flex;flex-direction:column;gap:16px}.explorer-card{background:#ffffff8c;border:1px solid #dce4d6;border-radius:16px;overflow:hidden;transition:box-shadow .35s,border-color .35s,background .35s}.explorer-card.is-active{border-color:#7aa68a;box-shadow:0 14px 30px -23px #185834;background:#fffefa}.explorer-card>button{display:flex;align-items:center;gap:18px;text-align:left;padding:21px 23px 15px;background:none;border:0;width:100%}.choice-index{font:22px Georgia,serif;color:#98b295}.explorer-card.is-active .choice-index{color:var(--green)}.explorer-card strong{display:block;font-family:var(--serif);font-size:27px;font-weight:500;line-height:1.5}.explorer-card small{display:block;font-size:13px;color:#6f8874;margin-top:4px}.choice-icon{margin-left:auto;font-size:21px;color:#6e967d}.explorer-copy{padding:0 25px 23px 67px}.explorer-copy>p{font-size:14px;line-height:1.9}.explorer-copy .explorer-detail{font-size:12px;margin-top:12px;color:#6a806d;border-top:1px solid #e5ebe0;padding-top:10px}.science-section{padding-top:88px;padding-bottom:10px}.science-section h2{font-size:38px}.problem-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:25px;margin-top:35px}.problem-grid article{padding:25px 23px;border-radius:16px;background:#fffefa;border:1px solid #dfe7d9;box-shadow:0 15px 30px -27px #416d3e}.problem-grid article>span{font-size:12px;color:#89a182}.problem-grid h3{font-family:var(--serif);font-size:26px;margin:24px 0 17px}.problem-grid p{font-size:14px;line-height:1.9}.problem-grid .mechanism-note{font-size:12px;color:#557660;margin-top:22px;padding-top:15px;border-top:1px solid #e1e9db}.method-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:35px;margin-top:38px}.method-grid>article{border-top:1px solid #a5bda1;padding-top:25px}.method-grid h3{font-family:var(--serif);font-size:26px;margin-bottom:15px}.method-grid p{font-size:15px}.science-notice{background:#e7eee0;border-left:3px solid #92af86;padding:23px 28px;color:#57705b;font-size:14px;line-height:1.9;margin-top:38px}.science-notice strong{display:block;color:var(--ink);font-size:17px;margin-bottom:10px}.science-sources{border-top:1px solid #d5e0ce;margin-top:70px;padding-top:29px;padding-bottom:45px}.science-sources h2{font-family:var(--sans);font-size:18px}.science-sources p{font-size:13px;margin-top:15px}.science-sources ol{font-size:13px;line-height:2;color:#5e7b63;padding-left:22px;margin-bottom:0}.science-sources a{text-decoration:underline;text-decoration-color:#b2c5ac;text-underline-offset:4px}.science-footer{padding:25px 0 34px;border-top:1px solid #d5e0ce;display:flex;justify-content:space-between;gap:15px;flex-wrap:wrap;background:none;font-size:12px;color:#71856e}.science-footer p{width:100%;font-size:12px}.face-panel{padding-bottom:25px}.face-svg{width:100%;max-height:510px;display:block}.face-region{opacity:.1;transition:opacity .6s}.explorer[data-region-active="upper"] .region-upper,.explorer[data-region-active="mid"] .region-mid,.explorer[data-region-active="mouth"] .region-mouth,.explorer[data-region-active="lower"] .region-lower{opacity:1;animation:region-pulse 4s ease-in-out infinite}.proportion-lines{animation:guide-flow 24s linear infinite}.section-description{margin-top:19px;max-width:740px}.material-explorer{margin-top:35px}.material-svg{display:block;width:100%;height:auto;margin:28px 0 20px}.material-svg text{font-family:var(--sans);font-size:22px;fill:#597961}.mechanism{display:none}.explorer[data-material-active="ha"] .mechanism-ha,.explorer[data-material-active="collagen"] .mechanism-collagen,.explorer[data-material-active="stimulator"] .mechanism-stimulator{display:block}.water-orbit{transform-origin:300px 163px;animation:orbit-breathe 5s ease-in-out infinite}.fiber-network{stroke-dasharray:250 40;animation:fiber-flow 12s linear infinite}.growing-fibers{stroke-dasharray:150;animation:collagen-grow 5s ease-in-out infinite alternate}.material-panel{padding-bottom:27px}.is-paused *{animation-play-state:paused!important}.is-paused .skin-layer{transition:none!important}.science-page .ambient-bg{z-index:-1}.science-page main{position:relative}.science-page .explorer-options:focus-within{scroll-margin-top:110px}
@keyframes water-rise{0%,100%{transform:translateY(0);opacity:.55}50%{transform:translateY(-10px);opacity:1}}@keyframes fiber-flow{to{stroke-dashoffset:-396}}@keyframes shadow-soft{50%{opacity:.12;transform:scale(.94)}}@keyframes region-pulse{0%,100%{opacity:.65}50%{opacity:1}}@keyframes guide-flow{to{stroke-dashoffset:72}}@keyframes orbit-breathe{50%{transform:scale(1.09) rotate(7deg)}}@keyframes collagen-grow{from{stroke-dashoffset:140;opacity:.4}to{stroke-dashoffset:0;opacity:1}}
@media(max-width:1000px){.explorer{gap:25px}.explorer-card>button{padding:19px 18px 13px;gap:13px}.explorer-copy{padding:0 19px 21px 53px}.explorer-card strong{font-size:25px}.problem-grid{grid-template-columns:1fr 1fr}.diagram-top{font-size:12px;padding:0 2px;gap:8px}.motion-toggle{padding:6px 10px}.face-svg{max-height:440px}}
@media(max-width:700px){.science-header>.wrap{min-height:75px;gap:12px;flex-wrap:wrap;padding:10px 0}.science-brand{gap:12px}.science-brand img{width:92px;height:35px}.science-brand span{font-size:12px;padding-left:12px}.science-header nav{font-size:12px;gap:17px}.science-header nav a{padding:10px 0}.science-intro{padding-top:40px;padding-bottom:31px}.science-intro h1{font-size:39px}.science-intro>p:last-child{font-size:15px;line-height:1.9;margin-top:19px}.explorer{grid-template-columns:1fr;gap:24px}.diagram-panel{position:relative;top:0;padding:19px 12px 20px;border-radius:19px}.diagram-note{font-size:12px;line-height:1.8;padding:0 9px}.diagram-top{font-size:12px;padding:0 3px}.explorer-card>button{padding:19px 20px 12px;gap:15px}.explorer-card strong{font-size:25px}.explorer-card small{font-size:12px}.explorer-copy{padding:0 21px 22px 56px}.explorer-copy>p{font-size:14px}.explorer-copy .explorer-detail{font-size:12px}.science-section{padding-top:57px}.science-section h2{font-size:30px}.problem-grid{gap:15px;margin-top:27px;grid-template-columns:1fr}.problem-grid article{padding:23px}.problem-grid h3{margin:16px 0 12px}.method-grid{grid-template-columns:1fr;gap:28px;margin-top:29px}.method-grid h3{font-size:25px}.method-grid p{font-size:14px}.science-notice{font-size:13px;padding:21px;margin-top:31px}.face-svg{max-height:430px}.face-explorer{gap:20px}.science-sources{margin-top:50px;padding-bottom:28px}.science-sources p,.science-sources ol{font-size:12px}.science-footer{padding-bottom:28px;font-size:12px}.science-footer>p{font-size:12px}.material-explorer{margin-top:29px}.material-svg{margin-top:15px}.section-description{font-size:15px}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important}.skin-layer{transform:none!important}}

.diagram-switches{display:flex;gap:7px;flex-wrap:wrap;padding:15px 9px 0;position:relative;z-index:2}.diagram-switches button{border:1px solid #c0d1b8;background:#ffffff91;color:#5e7d63;border-radius:20px;padding:7px 13px;font-size:12px;line-height:1.5;min-height:36px}.diagram-switches button[aria-pressed=true]{background:#176749;color:white;border-color:#176749;box-shadow:0 5px 10px #1e6a3920}.diagram-panel{top:102px}.material-svg{margin-top:15px}.face-svg{max-height:455px}@media(max-width:700px){.diagram-switches{gap:7px;padding-top:15px}.diagram-switches button{padding:7px 11px;font-size:12px}.diagram-panel{top:0}.face-svg{max-height:390px}}

@media(max-width:700px){.skin-guide,.skin-svg>g:last-child,.face-labels{display:none}}
