.optimisation-page{--op-muted:#aebbd0;--op-line:#293548;background:#080e1c;color:#f1f4f8}.op-main{padding-bottom:60px}.op-heading{display:flex;gap:48px;align-items:end;justify-content:space-between;padding:44px 0 36px;border-bottom:1px solid var(--op-line)}.op-heading h1{font-size:clamp(38px,4.5vw,64px);line-height:1.02;letter-spacing:-2.5px;margin:12px 0 0;font-weight:450;max-width:750px}.op-heading h1 em{color:#b8ceee;font-family:Georgia,serif;font-weight:400}.op-heading>p{max-width:345px;font-size:16px;line-height:1.65;color:var(--op-muted);margin:0 0 3px}.op-atlas{display:grid;grid-template-columns:180px minmax(230px,.92fr) minmax(330px,1.18fr);gap:28px;align-items:start;padding-top:36px}.op-systems{display:flex;flex-direction:column;gap:4px;padding-top:15px}.op-systems button{display:flex;align-items:center;gap:12px;text-align:left;background:transparent;border:0;border-bottom:1px solid #1f2d42;padding:17px 8px;color:#adbbcf;font:400 14px/1.4 Arial,sans-serif;cursor:pointer;min-height:64px}.op-system-number{color:var(--system-colour);font-size:11px;letter-spacing:1px;opacity:.7}.op-system-arrow{margin-left:auto;opacity:0}.op-systems button[aria-pressed=true]{color:#fff;border-bottom-color:var(--system-colour);background:linear-gradient(90deg,#ffffff08,transparent)}.op-systems button[aria-pressed=true] .op-system-arrow{opacity:1}.op-systems button:hover{color:#fff;background:#ffffff05}.op-body{margin:0;position:sticky;top:24px;--active-colour:#ff988b}.op-body-stage{position:relative;isolation:isolate;aspect-ratio:2/3;overflow:hidden;background:#080e1c}.op-body-image{width:100%;height:100%;object-fit:contain;mix-blend-mode:screen;display:block;mask-image:linear-gradient(0deg,transparent 0%,#000 12%,#000 93%,transparent 100%)}.op-body-stage:after{content:"";position:absolute;inset:0;pointer-events:none;z-index:1;background:linear-gradient(90deg,#080e1c,transparent 15%,transparent 85%,#080e1c)}.op-circulation{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;z-index:2;overflow:visible}.op-paths{fill:none;stroke:var(--active-colour);stroke-width:1.5;opacity:.12}.op-flow{fill:none;stroke:var(--active-colour);stroke-width:4;stroke-dasharray:7 170;opacity:.7;filter:drop-shadow(0 0 4px var(--active-colour))}.op-organ,.op-brain-halo,.op-gut{fill:var(--active-colour);filter:url(#op-glow);opacity:0}.op-muscle{fill:none;stroke:var(--active-colour);stroke-width:35;filter:url(#op-glow);opacity:0}.op-body[data-active=heart] .op-organ{opacity:.38}.op-body[data-active=metabolism] .op-gut{opacity:.23}.op-body[data-active=movement] .op-muscle{opacity:.24}.op-body[data-active=brain] .op-brain-halo,.op-body[data-active=sleep] .op-brain-halo{opacity:.17}.op-body[data-active=energy] .op-paths,.op-body[data-active=hormones] .op-paths{opacity:.4}.op-body[data-active=sleep] .op-flow{opacity:.15}.op-hotspot{--size:42px;position:absolute;left:var(--x);top:var(--y);transform:translate(-50%,-50%);width:var(--size);height:var(--size);border-radius:50%;border:1px solid #afc1d544;background:#08101de0;display:grid;place-items:center;color:#ced9e6;z-index:4;cursor:pointer;font:500 12px/1 Arial,sans-serif;box-shadow:0 0 0 5px #080e1c33}.op-hotspot[aria-pressed=true]{background:var(--system-colour);border-color:var(--system-colour);color:#080e1c;box-shadow:0 0 24px color-mix(in srgb,var(--system-colour) 40%,transparent)}.op-hotspot:hover{border-color:var(--system-colour);scale:1.08}.op-body-label{position:absolute;left:0;bottom:4px;writing-mode:vertical-rl;transform:rotate(180deg);font:10px/1 Arial,sans-serif;letter-spacing:2px;color:#899ab1;z-index:3}.op-body-scale{position:absolute;top:7%;bottom:7%;right:0;width:8px;background:repeating-linear-gradient(0deg,#516179 0 1px,transparent 1px 19px);opacity:.6}.op-body figcaption{font-size:12px;line-height:1.6;color:#a8b6ca;text-align:center;max-width:290px;margin:18px auto 0}.op-reading{min-width:0}.op-panel-heading{margin:0 0 24px}.op-system-kicker{font-size:12px;letter-spacing:1.5px;text-transform:uppercase;color:var(--system-colour);margin:0 0 16px}.op-panel h2{font-size:clamp(28px,3vw,41px);font-weight:450;line-height:1.09;letter-spacing:-1.3px;margin:0 0 18px}.op-panel-heading>p:last-child{color:#b9c6d8;font-size:16px;line-height:1.65;margin:0}.op-tabs{display:flex;gap:20px;border-bottom:1px solid #334157;margin:0 0 8px}.op-tabs button{cursor:pointer;color:#adb9cb;border:0;border-bottom:2px solid transparent;background:transparent;font:400 13px/1.3 Arial,sans-serif;padding:13px 0;min-height:46px}.op-tabs button[aria-selected=true]{color:#fff;border-color:var(--system-colour)}.op-item{padding:24px 0;border-bottom:1px solid #243149}.op-item h3{font-size:20px;font-weight:500;line-height:1.3;letter-spacing:-.3px;margin:9px 0 10px}.op-item p{font-size:15px;line-height:1.7;color:#bfcbdb;margin:0}.op-evidence{display:inline-block;font-size:10px;line-height:1.4;letter-spacing:1.25px;text-transform:uppercase;color:#aab9ce}.op-evidence-experimental{color:#efc889}.op-evidence-clinical{color:#c9b7fc}.op-evidence-supported,.op-evidence-foundation{color:#95d9c6}.op-refs{display:flex;gap:5px 12px;flex-wrap:wrap;margin-top:12px}.op-refs a{font-size:11px;line-height:1.6;text-decoration:underline;text-underline-offset:3px;color:#9aaecb}.op-refs a:hover{color:#fff}.op-ready .op-nojs-heading{display:none}.op-ready [hidden]{display:none!important}.op-panel+.op-panel{margin-top:50px}.op-ready .op-panel{margin-top:0}.op-pager{display:flex;justify-content:space-between;align-items:center;border-top:1px solid var(--op-line);gap:16px;margin-top:25px;padding-top:17px}.op-pager button{font:400 13px/1.4 Arial,sans-serif;color:#cbd5e4;border:0;background:transparent;padding:12px 0;cursor:pointer;min-height:44px}.op-pager span{font-size:11px;color:#94a4bc}.op-context{display:grid;grid-template-columns:1fr 1.5fr .9fr;gap:36px;border-top:1px solid var(--op-line);margin-top:64px;padding-top:30px;color:#aebbd0;font-size:13px;line-height:1.7}.op-context>div{display:flex;gap:16px;align-items:start}.op-context h2{font-size:19px;line-height:1.3;font-weight:400;margin:0;color:#dce6f4}.op-context-mark{color:#97bde4;font-size:24px;line-height:1}.op-context p{margin:0}.op-reviewed{font-size:11px}.op-reviewed a{display:block;margin-top:8px;text-decoration:underline;text-underline-offset:4px}.op-weight{padding:23px;background:#111d2d;border:1px solid #344057;margin-top:22px}.op-weight h3{font-size:20px;margin:0 0 10px}.op-weight p{font-size:13px;line-height:1.7;color:#bac6d8}.op-measures{display:grid;grid-template-columns:1fr 1fr 1fr;gap:10px;margin:18px 0}.op-measures label{font-size:12px;color:#e7edf5}.op-measures label span{display:block;font-size:10px;color:#aebbd0;margin-top:4px}.op-measures input{box-sizing:border-box;display:block;width:100%;min-width:0;background:#080e1c;color:white;font:16px/1.4 Arial,sans-serif;padding:10px 8px;border:1px solid #50617b;margin-top:8px;border-radius:0}.op-weight button{background:#d6e6f6;color:#0d1b2c;border:0;min-height:44px;padding:10px 18px;font:14px Arial,sans-serif;cursor:pointer}.op-weight-result{display:block;font-size:15px;line-height:1.6;margin-top:18px;color:#e1ecf7}.op-weight .op-small{font-size:11px;margin-bottom:0}.op-hrv{margin:24px 0;color:#9eb0ff;padding:18px;border:1px solid #344057}.op-hrv svg{width:100%;height:auto;display:block}.op-hrv figcaption{font-size:11px;line-height:1.5;color:#afbdd1}.optimisation-page button:focus-visible,.optimisation-page a:focus-visible,.optimisation-page input:focus-visible,.op-view:focus-visible{outline:2px solid #d2e9fa;outline-offset:5px}.op-animate .op-flow{animation:op-circulate 4s ease-out 1}.op-animate[data-active=heart] .op-organ{transform-origin:553px 447px;animation:op-heart 1s ease-in-out 4}.op-animate[data-active=movement] .op-muscle,.op-animate[data-active=brain] .op-brain-halo,.op-animate[data-active=sleep] .op-brain-halo,.op-animate[data-active=metabolism] .op-gut{animation:op-breathe 4s ease-in-out 1}@keyframes op-circulate{from{stroke-dashoffset:350;opacity:0}20%{opacity:.9}to{stroke-dashoffset:0;opacity:.7}}@keyframes op-heart{0%,100%{transform:scale(1);opacity:.25}30%{transform:scale(1.15);opacity:.55}50%{transform:scale(1.03)}65%{transform:scale(1.09)}}@keyframes op-breathe{0%{opacity:.1}50%{opacity:.5}100%{opacity:.2}}
@media(min-width:1450px){.op-atlas{grid-template-columns:200px minmax(320px,1fr) minmax(410px,1.1fr);gap:36px}.op-body{max-width:445px}.op-item p{font-size:16px}}
@media(max-width:1090px){.op-atlas{grid-template-columns:minmax(255px,.85fr) minmax(320px,1.15fr);gap:24px}.op-systems{grid-column:1/-1;display:flex;flex-direction:row;overflow-x:auto;padding:0 0 12px;gap:12px;scrollbar-width:thin}.op-systems button{flex:0 0 auto;min-height:45px;padding:10px;white-space:nowrap;gap:8px}.op-system-arrow{display:none}.op-heading{align-items:start;gap:28px}.op-heading>p{max-width:275px;font-size:14px}.op-atlas{padding-top:20px}.op-context{grid-template-columns:1fr 2fr}.op-reviewed{grid-column:2}.op-tabs{gap:14px}}
@media(max-width:700px){.op-main{width:calc(100% - 36px)}.op-heading{display:block;padding:24px 0}.op-heading h1{font-size:43px;letter-spacing:-1.8px}.op-heading>p{max-width:100%;margin-top:20px;font-size:15px}.op-atlas{grid-template-columns:1fr;gap:12px}.op-systems{grid-column:auto;position:sticky;top:0;background:#080e1cf5;backdrop-filter:blur(10px);z-index:6;margin-inline:-18px;padding-inline:18px}.op-systems button{font-size:12px;min-height:44px}.op-body{position:relative;top:auto;width:min(100%,330px);margin-inline:auto}.op-body-stage{width:100%;max-height:465px}.op-body figcaption{max-width:330px;margin:4px auto 24px;font-size:11px}.op-hotspot{--size:44px}.op-body-scale{right:5px}.op-body-label{left:5px}.op-reading{padding-top:10px}.op-panel h2{font-size:35px}.op-panel-heading>p:last-child{font-size:16px}.op-tabs{gap:22px}.op-tabs button{font-size:12px;white-space:nowrap}.op-item p{font-size:16px}.op-item h3{font-size:22px}.op-refs a{font-size:12px}.op-evidence{font-size:11px}.op-context{grid-template-columns:1fr;gap:18px;margin-top:40px}.op-reviewed{grid-column:auto}.op-weight{padding:18px}.op-measures{gap:8px}.op-measures label span{min-height:14px}.op-pager{position:sticky;bottom:0;background:#080e1cf5;padding-bottom:8px;z-index:5}}
@media(prefers-reduced-motion:reduce){.op-animate .op-flow,.op-animate .op-organ,.op-animate .op-muscle,.op-animate .op-brain-halo,.op-animate .op-gut{animation:none!important}.op-hotspot:hover{scale:1}}

/* Keep the anatomical landmarks visible inside generous touch targets. */
.op-hotspot,.op-hotspot[aria-pressed=true]{border:0;background:transparent;box-shadow:none}.op-hotspot span{display:grid;place-items:center;width:24px;height:24px;border:1px solid #aec4de99;border-radius:50%;background:#08101dc9;color:#deebf8;font-size:10px}.op-hotspot[aria-pressed=true] span{width:28px;height:28px;border-color:var(--system-colour);background:var(--system-colour);color:#080e1c;box-shadow:0 0 22px color-mix(in srgb,var(--system-colour) 35%,transparent)}
.op-weight[hidden]{display:none!important}.op-panel{scroll-margin-top:85px}
@media(max-width:700px){.op-main{width:100%;padding-inline:18px}.op-heading h1{font-size:42px}.op-systems{margin-inline:-18px}}
.op-context h2{letter-spacing:-.3px}

/* Practical health checks and a compact, source-linked supplement guide. */
.op-guide-nav{display:flex;gap:12px 28px;flex-wrap:wrap;padding-top:22px}.op-guide-nav a{font-size:14px;color:#c4d6ee;text-decoration:underline;text-underline-offset:5px;min-height:38px;display:inline-flex;align-items:center}.op-guide{border-top:1px solid var(--op-line);margin-top:72px;padding-top:42px;scroll-margin-top:30px}.op-guide-heading{display:grid;grid-template-columns:1.1fr 1fr;gap:50px;align-items:end;margin-bottom:36px}.op-guide h2{font-size:clamp(30px,3.5vw,46px);letter-spacing:-1.3px;line-height:1.1;font-weight:450;margin:10px 0 0}.op-guide-heading>p{font-size:16px;line-height:1.7;color:#b9c6d8;margin:0}.op-checks-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 46px}.op-check{display:flex;gap:18px;padding:27px 0;border-top:1px solid var(--op-line);min-width:0}.op-check-number{font-size:14px;color:#91b4dd;font-variant-numeric:tabular-nums;flex-shrink:0;padding-top:3px}.op-check h3{font-size:24px;letter-spacing:-.4px;font-weight:450;margin:10px 0}.op-check p,.op-test-note p,.op-stack-start p,.op-prescription p{font-size:16px;color:#bfcbdb;line-height:1.7;margin:0}.op-guide .op-evidence{font-size:12px}.op-guide .op-refs a,.op-testosterone .op-refs a{font-size:13px}.op-test-note{background:#101b2c;border-left:2px solid #b2c8e8;padding:26px 30px;margin-top:25px}.op-test-note h3{font-size:21px;font-weight:500;margin:0 0 12px}.op-stack-start{display:grid;grid-template-columns:190px 1fr;gap:15px 24px;background:#101b2c;padding:28px;margin-bottom:30px}.op-stack-start>span{font-size:12px;letter-spacing:1.5px;color:#a7c9ee;line-height:1.6;padding-top:4px}.op-stack-start .op-refs{grid-column:2;margin:0}.op-stack-start strong{color:#e3edf8;font-weight:500}.op-supplements{border-top:1px solid #344057}.op-supplement{border-bottom:1px solid #344057;scroll-margin-top:25px}.op-supplement summary{display:flex;align-items:center;gap:25px;list-style:none;cursor:pointer;min-height:99px;padding:22px 8px}.op-supplement summary::-webkit-details-marker{display:none}.op-supplement summary strong{font-size:26px;line-height:1.3;font-weight:450;letter-spacing:-.4px;display:block}.op-supplement summary small{display:block;color:#aebbd0;font-size:14px;margin-top:6px;line-height:1.4}.op-expand{font-size:28px;font-weight:300;margin-left:auto;color:#a7c9ee}.op-supplement[open] .op-expand{transform:rotate(45deg)}.op-supplement-body{padding:0 8px 28px 50px}.op-supplement dl{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:28px;margin:0 0 22px}.op-supplement dt{font-size:13px;letter-spacing:.5px;color:#aeccee;margin-bottom:10px}.op-supplement dd{font-size:16px;line-height:1.7;color:#bfcbdb;margin:0}.op-research-link{display:inline-block;font-size:14px;line-height:1.5;margin-top:20px;padding-block:7px;color:#b3d4fb;text-decoration:underline;text-underline-offset:4px}.op-prescription{display:grid;grid-template-columns:.8fr 1.4fr;gap:45px;border:1px solid #3e3851;background:#121625;padding:30px;margin-top:38px;scroll-margin-top:30px}.op-prescription h3{font-size:28px;line-height:1.2;font-weight:450;letter-spacing:-.5px;margin:12px 0}.op-prescription p+p{margin-top:16px}.op-prescription strong{color:#e3eaf4;font-weight:500}.op-testosterone{margin:28px 0 0;border:1px solid #413954;padding:22px;background:#111625}.op-testosterone h3{font-size:24px;font-weight:450;margin:8px 0 14px;letter-spacing:-.4px}.op-testosterone>p{font-size:15px;line-height:1.7;color:#bfcbdb}.op-testosterone svg{display:block;width:100%;height:auto;margin-top:20px;color:#bcc9db}.op-testosterone svg text{fill:currentColor;font:15px Arial,sans-serif}.op-testosterone figcaption{font-size:13px;color:#aebbd0;line-height:1.7;margin-top:12px}.op-supplement summary:focus-visible{outline:2px solid #d2e9fa;outline-offset:4px}
@media(max-width:900px){.op-guide-heading{gap:28px}.op-supplement dl{grid-template-columns:1fr}.op-prescription{grid-template-columns:1fr;gap:12px}.op-stack-start{grid-template-columns:1fr}.op-stack-start .op-refs{grid-column:1}}
@media(max-width:700px){.op-guide{margin-top:42px;padding-top:30px}.op-guide-nav{gap:4px 20px}.op-guide-heading,.op-checks-grid{grid-template-columns:1fr;gap:18px}.op-guide-heading{margin-bottom:25px}.op-checks-grid{gap:0}.op-check h3{font-size:23px}.op-test-note,.op-stack-start,.op-prescription{padding:22px}.op-supplement summary{gap:16px;padding-inline:0}.op-supplement summary strong{font-size:24px}.op-supplement-body{padding-left:0}.op-testosterone{padding:17px}.op-guide .op-refs a{font-size:13px}}