/* Motion Spine — a technical character-animation workbook, not a component kit */
:root{--ink:#20121f;--ink-2:#2c1930;--plum:#492a48;--line:#80607f;--cloud:#f4f3ed;--paper:#e5e1d9;--acid:#d6ff34;--char:#141115;--muted:#c9c1c7;--body:#3b343b;--sans:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--cloud);color:var(--body);font-family:var(--sans);font-size:16px;line-height:1.58;letter-spacing:.006em}body,button,input,select,textarea{font-family:var(--sans)}img{display:block;width:100%;height:auto}a{color:inherit;text-decoration-thickness:1px;text-underline-offset:3px}a:hover{color:var(--plum)}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid var(--acid);outline-offset:3px}.site-shell{overflow:clip}.skip{position:absolute;left:1rem;top:-4rem;background:var(--acid);color:var(--char);padding:.65rem 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.7rem;min-width:44px;min-height:44px}.navbar-toggler-icon{filter:invert(1)}.nav-link{color:var(--cloud)!important;font-size:.92rem;font-weight:700;padding:.7rem .85rem!important}.nav-link:hover,.nav-link:focus{color:var(--acid)!important}.hero{background:var(--ink);color:var(--cloud);padding:clamp(4.5rem,10vw,8rem) 0 4rem;position:relative}.hero-grid{display:grid;grid-template-columns:minmax(0,.88fr) minmax(360px,1.12fr);align-items:end;gap:clamp(2rem,6vw,6rem)}.eyebrow{display:flex;gap:.65rem;align-items:center;font-size:.75rem;text-transform:uppercase;letter-spacing:.15em;font-weight:800;color:var(--acid);margin:0 0 1.35rem}.eyebrow:before{content:"";width:2.25rem;height:2px;background:currentColor}.hero h1{font-size:clamp(3rem,6.3vw,6.5rem);line-height:.91;letter-spacing:-.07em;max-width:10ch;margin:0 0 1.5rem;font-weight:850}.hero-lede{max-width:47ch;color:#ded8dc;font-size:clamp(1rem,1.5vw,1.18rem);margin:0 0 2rem}.hero-cta{display:flex;flex-wrap:wrap;gap:.8rem}.ms-button{display:inline-flex;align-items:center;justify-content:center;gap:.45rem;min-height:48px;padding:.75rem 1rem;border:1px solid var(--acid);background:var(--acid);color:var(--char);font-weight:850;text-decoration:none;border-radius:0}.ms-button:hover{background:transparent;color:var(--acid)}.ms-button.ghost{background:transparent;color:var(--cloud);border-color:rgba(255,255,255,.55)}.ms-button.ghost:hover{color:var(--acid);border-color:var(--acid)}.hero-image{position:relative;min-width:0;margin:0}.hero-image img{height:clamp(300px,44vw,560px);object-fit:cover;object-position:center}.hero-caption{position:absolute;left:0;bottom:0;background:var(--cloud);color:var(--ink);padding:.8rem 1rem;max-width:21rem;border-top:4px solid var(--acid);font-size:.81rem;line-height:1.35;font-weight:750}.index-strip{background:var(--paper);border-bottom:1px solid #cfc7cc}.index-strip .wrap{display:grid;grid-template-columns:repeat(4,1fr);gap:0}.index-cell{border-right:1px solid #bfb5bd;padding:1rem 1.1rem;min-width:0}.index-cell:first-child{border-left:1px solid #bfb5bd}.index-cell b{display:block;font-size:.77rem;text-transform:uppercase;letter-spacing:.1em;color:var(--plum)}.index-cell span{font-size:.85rem;color:#5c535b}.module{padding:clamp(4rem,7vw,7.2rem) 0;position:relative}.module h2{font-size:clamp(2rem,4.1vw,4.3rem);line-height:.98;letter-spacing:-.055em;margin:0;max-width:12ch;font-weight:850;color:var(--ink)}.module h3{font-size:1.15rem;line-height:1.15;letter-spacing:-.02em;font-weight:800;color:var(--ink);margin:0}.module p{margin:0}.module-intro{max-width:48ch;margin-top:1.3rem;font-size:1.04rem}.module-label{font-size:.76rem;font-weight:850;text-transform:uppercase;letter-spacing:.14em;color:var(--plum);display:block;margin-bottom:1rem}.split-ledger{display:grid;grid-template-columns:minmax(0,1fr) minmax(280px,.88fr);gap:clamp(2rem,7vw,7rem);align-items:start}.margin-note{border-left:3px solid var(--acid);padding:.2rem 0 .2rem 1rem;font-size:.93rem;color:#594c58}.joint-map{background:var(--paper);border-top:1px solid #c8c0c3;border-bottom:1px solid #c8c0c3}.joint-layout{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:clamp(2rem,6vw,6rem);align-items:center}.joint-sketch{border:1px solid #b2a7af;background:var(--cloud);padding:clamp(1.3rem,3vw,2.4rem);min-height:390px;position:relative;display:grid;place-items:center}.chain{display:grid;gap:0;align-items:center;justify-items:center;width:190px}.bone{position:relative;width:6px;height:56px;background:var(--plum)}.bone:after{content:"";width:18px;height:18px;border:4px solid var(--ink);border-radius:50%;background:var(--acid);position:absolute;top:100%;left:50%;transform:translate(-50%,-2px)}.bone.head{height:34px}.bone.head:before{content:"";position:absolute;width:65px;height:65px;border-radius:49% 53% 47% 52%;background:var(--plum);top:-56px;left:50%;transform:translateX(-50%)}.chain-line{position:absolute;background:#aaa0a7}.chain-line.x{height:1px;width:30%;left:5%;top:28%}.chain-line.y{height:1px;width:22%;right:5%;bottom:29%}.callout{position:absolute;background:var(--ink);color:var(--cloud);font-size:.72rem;font-weight:800;padding:.4rem .55rem;letter-spacing:.04em}.callout.a{left:6%;top:18%}.callout.b{right:7%;top:45%}.callout.c{left:9%;bottom:15%}.joint-list{list-style:none;padding:0;margin:0;border-top:1px solid #b7acb2}.joint-list li{display:grid;grid-template-columns:2.4rem minmax(0,1fr);gap:1rem;padding:1.1rem 0;border-bottom:1px solid #b7acb2}.joint-list b{font-size:.83rem;color:var(--plum);letter-spacing:.1em}.board{background:var(--ink-2);color:var(--cloud)}.board h2,.board h3{color:var(--cloud)}.hygiene-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.06fr);gap:clamp(2rem,5vw,5rem);align-items:center}.board-photo{position:relative;min-width:0}.board-photo img{height:480px;object-fit:cover}.photo-stamp{position:absolute;right:-1px;bottom:1.2rem;background:var(--acid);color:var(--char);padding:.8rem 1rem;font-size:.76rem;font-weight:900;text-transform:uppercase;letter-spacing:.1em}.hygiene-rules{border-top:1px solid rgba(255,255,255,.3)}.rule{display:grid;grid-template-columns:3.2rem minmax(0,1fr);gap:1rem;padding:1.35rem 0;border-bottom:1px solid rgba(255,255,255,.3)}.rule strong{font-size:.9rem;color:var(--acid)}.rule p{color:#ded6de;font-size:.94rem}.clinic-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(320px,1fr);gap:clamp(2rem,6vw,7rem);align-items:center}.clinic-image{height:500px;object-fit:cover;object-position:center}.diagnosis{border:1px solid var(--ink);padding:0}.diagnosis-head{display:flex;justify-content:space-between;gap:1rem;padding:1rem 1.15rem;background:var(--ink);color:var(--cloud);font-size:.8rem;font-weight:800;text-transform:uppercase;letter-spacing:.1em}.diagnosis-row{display:grid;grid-template-columns:1fr 1.3fr;padding:1.05rem 1.15rem;gap:1rem;border-bottom:1px solid #bfb8be}.diagnosis-row:last-child{border-bottom:0}.diagnosis-row b{color:var(--plum)}.control-zone{background:linear-gradient(90deg,var(--cloud) 0%,var(--cloud) 65%,var(--paper) 65%)}.control-wrap{display:grid;grid-template-columns:minmax(0,.72fr) minmax(0,1.28fr);gap:clamp(2rem,7vw,7rem)}.nav-tabs{border-bottom:1px solid #ad9fab;gap:.2rem}.nav-tabs .nav-link{color:var(--body)!important;border:0;border-bottom:4px solid transparent;border-radius:0;margin:0;padding:.9rem 1rem!important;font-size:.85rem}.nav-tabs .nav-link.active{background:var(--acid);color:var(--char)!important;border-color:var(--ink)}.tab-pane{padding:2rem 0 0}.tab-pane h3{font-size:1.65rem;margin-bottom:.9rem}.tab-pane ul{padding-left:1.2rem;margin:1rem 0 0}.tab-pane li{padding:.25rem 0}.tiny-grid{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:#bdb5ba;margin-top:2rem;border:1px solid #bdb5ba}.tiny-grid div{background:var(--cloud);padding:1rem}.tiny-grid strong{font-size:.76rem;text-transform:uppercase;letter-spacing:.1em;display:block;color:var(--plum);margin-bottom:.35rem}.testing{background:var(--paper)}.testing-top{display:grid;grid-template-columns:minmax(0,1fr) minmax(240px,.55fr);gap:2rem;align-items:end;margin-bottom:2.5rem}.field-label{font-size:.78rem;text-transform:uppercase;letter-spacing:.1em;font-weight:850;display:block;margin:0 0 .5rem;color:var(--plum)}.stage-select{font-size:1rem;border:1px solid var(--ink);border-radius:0;background:var(--cloud);color:var(--ink);min-height:48px;padding:.6rem 2.3rem .6rem .8rem;width:100%}.test-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1px;background:#b4a9b1;border:1px solid #b4a9b1}.test-station{background:var(--cloud);padding:1.25rem;min-height:235px;display:flex;flex-direction:column;justify-content:space-between}.test-station.is-muted{opacity:.28}.test-station .station-no{font-size:.78rem;color:var(--plum);font-weight:900;letter-spacing:.12em}.test-station h3{margin:1rem 0 .65rem}.filter-status{font-size:.85rem;font-weight:750;color:var(--plum);min-height:1.5rem}.ladder-layout{display:grid;grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr);gap:clamp(2rem,6vw,6rem);align-items:start}.ladder-photo img{height:430px;object-fit:cover}.ladder{border-left:1px solid #9f929d;padding-left:0}.rung{display:grid;grid-template-columns:4.8rem minmax(0,1fr);gap:1.25rem;padding:0 0 1.45rem}.rung:last-child{padding-bottom:0}.rung-no{font-size:2.35rem;line-height:.9;font-weight:900;letter-spacing:-.1em;color:var(--plum);text-align:right}.rung p{max-width:44ch}.check-module{background:var(--ink);color:var(--cloud)}.check-module h2{color:var(--cloud)}.check-layout{display:grid;grid-template-columns:minmax(0,.75fr) minmax(0,1.25fr);gap:clamp(2rem,7vw,7rem);align-items:start}.counter-box{border-top:1px solid rgba(255,255,255,.35);padding-top:1.2rem;margin-top:1.5rem;display:flex;justify-content:space-between;gap:1rem;align-items:center}.counter-box b{font-size:2.5rem;line-height:1;color:var(--acid)}.reset-btn{min-height:44px;padding:.55rem .8rem;color:var(--cloud);border:1px solid rgba(255,255,255,.55);background:transparent;font-weight:800}.reset-btn:hover{color:var(--acid);border-color:var(--acid)}.checklist{border-top:1px solid rgba(255,255,255,.35)}.check-item{display:grid;grid-template-columns:28px minmax(0,1fr);align-items:start;gap:.8rem;padding:1rem 0;border-bottom:1px solid rgba(255,255,255,.25);cursor:pointer}.check-item input{width:22px;height:22px;margin:.1rem 0 0;accent-color:var(--acid)}.check-item span{font-weight:680}.check-item small{display:block;color:#ccc3ca;margin-top:.25rem}.practice-grid{display:grid;grid-template-columns:1.12fr .88fr;gap:clamp(1.4rem,4vw,4rem);align-items:center}.practice-photo img{height:420px;object-fit:cover}.practice-list{display:grid;gap:0;border-top:1px solid #b9adb5}.practice-list div{padding:1.15rem 0;border-bottom:1px solid #b9adb5;display:grid;grid-template-columns:2.25rem minmax(0,1fr);gap:.8rem}.practice-list b{color:var(--plum);font-size:.85rem}.faq-module{background:var(--paper)}.faq-layout{display:grid;grid-template-columns:minmax(0,.7fr) minmax(0,1.3fr);gap:clamp(2rem,7vw,7rem)}.accordion{border-top:1px solid #b9adb5}.accordion-item{border:0!important;border-bottom:1px solid #b9adb5!important;background:transparent}.accordion-button{background:transparent!important;color:var(--ink)!important;padding:1.15rem 0;font-size:1.08rem;font-weight:800;box-shadow:none!important;gap:1rem}.accordion-button:not(.collapsed){box-shadow:none}.accordion-button:after{background-image:none;content:"+";font-size:1.7rem;height:auto;width:auto}.accordion-button:not(.collapsed):after{content:"−";transform:none}.accordion-body{padding:0 0 1.5rem;max-width:62ch}.contact-module{background:var(--plum);color:var(--cloud)}.contact-module h2,.contact-module h3{color:var(--cloud)}.contact-grid{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:clamp(2rem,6vw,7rem);align-items:start}.contact-aside{border-top:1px solid rgba(255,255,255,.35);padding-top:1rem}.contact-aside a{color:var(--acid);font-weight:850;font-size:1.2rem}.contact-form{border:1px solid rgba(255,255,255,.5);padding:clamp(1.1rem,3vw,2rem);background:#341e35}.contact-form label{display:block;font-size:.82rem;font-weight:800;letter-spacing:.06em;margin-bottom:.45rem}.contact-form input,.contact-form textarea{width:100%;min-height:48px;border:1px solid #b8acb8;background:var(--cloud);color:var(--ink);border-radius:0;padding:.7rem .8rem;font-size:1rem}.contact-form textarea{min-height:120px;resize:vertical}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:1rem}.form-field{margin-bottom:1rem}.form-message{min-height:1.6rem;font-size:.88rem;margin:.8rem 0 0}.form-message.error{color:#ffb5b5}.form-message.success{color:var(--acid)}.site-footer{background:var(--ink);color:var(--cloud);padding:2.3rem 0}.footer-grid{display:grid;grid-template-columns:1.2fr .8fr .7fr;gap:2rem;align-items:start}.footer-grid p,.footer-grid a{font-size:.87rem}.footer-title{font-weight:900;color:var(--acid);font-size:.78rem;text-transform:uppercase;letter-spacing:.13em;margin-bottom:.5rem}.footer-links{display:grid;gap:.35rem}.footer-bottom{border-top:1px solid rgba(255,255,255,.22);margin-top:2rem;padding-top:1rem;color:#c9bec8;font-size:.76rem}.legal-main{background:var(--cloud);min-height:60vh}.legal-hero{background:var(--ink);color:var(--cloud);padding:4rem 0 3rem}.legal-hero h1,.not-found h1{font-weight:900;letter-spacing:-.06em;font-size:clamp(2.8rem,6vw,5.5rem);line-height:.9;margin:0 0 1rem}.legal-copy{width:min(800px,100%);padding:4rem 0}.legal-copy h2{font-size:1.65rem;letter-spacing:-.04em;margin:2.2rem 0 .75rem;color:var(--ink)}.legal-copy p,.legal-copy li{max-width:72ch}.legal-copy ul{padding-left:1.25rem}.not-found{background:var(--ink);color:var(--cloud);min-height:62vh;display:grid;place-items:center;padding:4rem 0}.not-found p{max-width:45ch;color:#d8d0d8;margin:0 0 1.5rem}.error-line{height:5px;background:var(--acid);width:min(300px,80%);margin:1.6rem 0}
@media (max-width: 900px){.hero-grid,.joint-layout,.hygiene-grid,.clinic-grid,.control-wrap,.ladder-layout,.check-layout,.practice-grid,.faq-layout,.contact-grid{grid-template-columns:1fr;gap:2.4rem}.hero-image{max-width:780px}.control-zone{background:var(--cloud)}.hero h1{max-width:11ch}.board-photo img{height:min(60vw,480px)}.clinic-image{height:min(65vw,500px)}.testing-top{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr 1fr}.footer-grid>div:first-child{grid-column:1/-1}.index-cell{padding:.85rem}.joint-sketch{min-height:330px}.ladder-photo img,.practice-photo img{height:min(56vw,420px)}}
@media (max-width: 620px){.wrap{width:min(100% - 32px,1180px)}.top-tape .wrap{font-size:.66rem}.top-tape span{display:none}.hero{padding-top:4.3rem}.hero h1{font-size:clamp(3rem,15vw,4.25rem)}.hero-image img{height:310px}.hero-caption{max-width:75%;font-size:.75rem}.index-strip .wrap{grid-template-columns:1fr 1fr}.index-cell:nth-child(3){border-left:1px solid #bfb5bd}.module{padding:3.8rem 0}.module h2{font-size:clamp(2rem,10vw,3.1rem)}.joint-sketch{min-height:300px}.test-grid{grid-template-columns:1fr}.test-station{min-height:185px}.tiny-grid{grid-template-columns:1fr}.form-row{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr;gap:1.3rem}.footer-grid>div:first-child{grid-column:auto}.diagnosis-row{grid-template-columns:1fr;gap:.35rem}.rung{grid-template-columns:3.5rem minmax(0,1fr);gap:.8rem}.rung-no{font-size:2rem}.navbar-collapse{padding-top:.7rem}.check-item{grid-template-columns:26px minmax(0,1fr)}}
/* Added reference-image treatments */
.inline-reference{margin:1.5rem 0 0}.inline-reference img{height:210px;object-fit:cover;object-position:center}.inline-reference figcaption{font-size:.78rem;margin-top:.55rem;color:#665b64}.test-station img{height:125px;object-fit:cover;margin:-1.25rem -1.25rem 1rem;width:calc(100% + 2.5rem)}
@media (max-width:620px){.inline-reference img{height:190px}.test-station img{height:155px}}
/* QA spacing corrections: collapse every editorial split before narrow text columns appear. */
.module h2 + p,.module h3 + p{margin-top:.9rem}.rung h3 + p{margin-top:.55rem}
@media (max-width:900px){.split-ledger{grid-template-columns:1fr;gap:2.4rem}}