@font-face{font-family:Choeum;src:url('/fonts/NotoSansKR-400.woff') format('woff');font-style:normal;font-weight:100 500;font-display:swap}
@font-face{font-family:Choeum;src:url('/fonts/NotoSansKR-600.woff') format('woff');font-style:normal;font-weight:600 900;font-display:swap}
:root{--paper:#f5f3ed;--ink:#273b34;--muted:#64706a;--line:#d5d8ce;--orange:#bd644b;--pale:#e3e6d4;--serif:Georgia,serif;font-family:Choeum,'Pretendard','Noto Sans KR','Apple SD Gothic Neo','Malgun Gothic',sans-serif;color:var(--ink);background:var(--paper);font-synthesis:none}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:28px}body{margin:0;-webkit-font-smoothing:antialiased}button,a{-webkit-tap-highlight-color:transparent}button,input{font:inherit}button,a,summary{touch-action:manipulation}button{color:inherit}button{cursor:pointer}a{color:inherit;text-decoration:none}button:focus-visible,a:focus-visible,summary:focus-visible,[tabindex]:focus-visible{outline:3px solid #a7472c;outline-offset:5px}button:disabled{cursor:default}h1,h2,h3,p{margin:0}h1,h2,h3{word-break:keep-all}p,li{word-break:keep-all;overflow-wrap:break-word}.wrap{max-width:1200px;margin:0 auto;padding-left:40px;padding-right:40px}.header{height:105px;display:flex;align-items:center;gap:40px;border-bottom:1px solid var(--line)}.brand{font-weight:800;letter-spacing:-1.2px;display:inline-flex;gap:10px;align-items:center;font-size:25px}.brand svg{width:35px;height:35px;fill:var(--ink);stroke:var(--ink);stroke-width:2;stroke-linecap:round}.brand svg path{fill:none}.header nav{margin-left:auto;display:flex;gap:30px;font-size:14px;font-weight:500}.header nav a{padding:12px 0}.header nav a:hover{text-decoration:underline;text-underline-offset:5px}.header-note{font-size:12px;border:1px solid #bcc4b8;padding:8px 12px;border-radius:2px}.hero{padding-top:64px;padding-bottom:72px;display:grid;grid-template-columns:1.05fr 1fr;gap:56px}.eyebrow{font-size:12px;letter-spacing:.06em;font-weight:600;line-height:1.6}.hero-copy>.eyebrow{display:flex;align-items:center;gap:9px}.dot{width:7px;height:7px;background:var(--orange);display:inline-block;border-radius:50%}h1{font-size:56px;line-height:1.24;font-weight:650;letter-spacing:-3.8px;margin-top:26px}h1>span{color:var(--orange)}.hero-description{font-size:16px;line-height:1.9;color:#536158;margin-top:24px}.primary{display:inline-flex;background:var(--ink);color:#fffdf3;align-items:center;justify-content:space-between;min-height:56px;gap:48px;padding:14px 21px;font-size:15px;font-weight:600;margin-top:30px;transition:background .2s,transform .2s}.primary:hover{background:#3c5749;transform:translateY(-2px)}.primary>span{font-size:25px;font-weight:400}.hero-foot{display:flex;gap:18px;margin-top:27px;font-size:12px;color:#5d695f}.hero-foot>span+span{padding-left:18px;border-left:1px solid #abb7a8}.poster{background:#e2e5d1;display:flex;flex-direction:column;min-height:520px;position:relative;overflow:hidden}.poster-head{display:flex;justify-content:space-between;padding:24px 27px 0;font-size:10px;font-family:Arial,sans-serif;letter-spacing:1.8px;line-height:1.6}.poster-art{flex:1;display:grid;place-items:center;margin-top:-7px}.poster-art svg{display:block;width:100%;max-height:345px}.poster-bottom{display:flex;justify-content:space-between;align-items:center;padding:0 28px 20px;font-size:22px;line-height:1.45;font-weight:600;letter-spacing:-.8px}.poster-plus{font:65px/1 Arial,sans-serif;font-weight:200}.poster-caption{font-size:10px;color:#55624f;padding:0 28px 19px}.section-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:21px}.guide{padding-top:38px;border-top:1px solid var(--ink);padding-bottom:64px}.small-note{font-size:12px;color:#627064}h2{font-size:37px;line-height:1.35;letter-spacing:-1.8px;font-weight:600}.mobile-br{display:none}.body-tabs{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:32px}.body-tab{display:flex;align-items:center;text-align:left;border:1px solid #c7cfc2;min-height:101px;background:transparent;padding:20px 22px;gap:22px;transition:background .18s,border-color .18s}.tab-number{font-size:12px;align-self:flex-start;padding-top:5px;font-family:Arial,sans-serif}.tab-name{font-size:26px;font-weight:600;letter-spacing:-.8px}.tab-name small{display:block;font-family:Arial,sans-serif;font-size:9px;font-weight:400;letter-spacing:1.3px;margin-top:5px}.tab-mark{margin-left:auto;font-size:26px;opacity:.7}.body-tab:hover{background:#e9ebdf}.body-tab[aria-selected=true]{background:var(--ink);border-color:var(--ink);color:#fcfaef}.body-tab[data-body=knee][aria-selected=true]{background:#8b553e;border-color:#8b553e}.body-tab[data-body=ankle][aria-selected=true]{background:#455e76;border-color:#455e76}.region-intro{display:flex;align-items:baseline;gap:21px;padding:31px 0 25px}.region-intro h3{font-size:20px;font-weight:600;letter-spacing:-.6px}.region-intro p{font-size:14px;color:#657166;line-height:1.7}.steps{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin-bottom:22px}.steps button{border:0;border-bottom:3px solid transparent;background:transparent;padding:17px 8px 14px;display:flex;align-items:center;justify-content:center;gap:8px;font-size:13px;color:#626c63;line-height:1.4}.steps button>span{font-family:Arial,sans-serif;font-size:10px;display:inline-flex;width:23px;height:23px;align-items:center;justify-content:center;border:1px solid #b6c0b1;border-radius:50%}.steps button[aria-current=step]{border-bottom-color:var(--ink);font-weight:700;color:var(--ink)}.steps button[aria-current=step]>span{background:var(--ink);color:#fff;border-color:var(--ink)}.steps button:hover{background:#ebeee3}.explorer{display:grid;grid-template-columns:.95fr 1.05fr;background:#fffefa;min-height:493px;border:1px solid var(--line)}.anatomy-panel{background:#e9ecdf;padding:23px 25px 18px;display:flex;flex-direction:column;transition:background .2s;min-width:0}.diagram-top{display:flex;align-items:center;justify-content:space-between;font-size:10px;letter-spacing:1px}.diagram-index{border:1px solid #a9b5a3;border-radius:50%;height:28px;width:28px;display:grid;place-items:center;font-size:11px}.anatomy{flex:1;display:flex;align-items:center;justify-content:center}.anatomy>svg{width:100%;height:335px;display:block;overflow:visible}.anatomy text{font-family:Choeum,'Apple SD Gothic Neo','Malgun Gothic',sans-serif}.diagram-controls{display:flex;align-items:center;justify-content:space-between;gap:5px;flex-wrap:wrap}.diagram-controls>span{font-size:10px;color:#5c6758}.diagram-controls>button{background:#f4f5ed;border:1px solid #c4ccb9;display:flex;align-items:center;gap:7px;font-size:11px;min-height:40px;padding:9px 11px}.toggle-icon{width:22px;height:13px;border-radius:10px;display:inline-block;background:var(--ink);position:relative}.toggle-icon:after{content:'';position:absolute;right:2px;top:2px;background:white;border-radius:50%;width:9px;height:9px}.diagram-controls>button[aria-pressed=false] .toggle-icon{background:#7e897c}.diagram-controls>button[aria-pressed=false] .toggle-icon:after{right:auto;left:2px}.scan-overlay{opacity:1;transition:opacity .18s}.anatomy.overlay-hidden .scan-overlay{opacity:0}.step-copy{padding:32px 34px 23px;display:flex;flex-direction:column}.step-copy>.eyebrow{color:#8d4a36;font-size:10px;letter-spacing:1.5px}.step-copy h3{font-size:27px;letter-spacing:-1.2px;font-weight:600;line-height:1.4;margin-top:10px}.step-description{font-size:15px;line-height:1.8;color:#586357;margin-top:13px}.check-list{list-style:none;padding:0;margin:20px 0;display:grid;gap:13px}.check-list li{font-size:14px;line-height:1.65;padding-left:17px;position:relative}.check-list li:before{content:'';position:absolute;left:0;top:10px;width:4px;height:4px;background:var(--orange);border-radius:50%}.clinical-note{display:flex;align-items:flex-start;gap:9px;background:#f3f3ec;padding:12px 13px;margin-top:auto;font-size:12px;color:#606958;line-height:1.75}.clinical-note>span{display:grid;place-items:center;border:1px solid #a5af9d;width:15px;height:15px;border-radius:50%;flex-shrink:0;font:italic 11px Georgia,serif;margin-top:3px}.step-navigation{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:21px}.step-navigation>span{font:11px Arial,sans-serif;letter-spacing:2px;color:#707969}.previous{border:0;background:transparent;padding:10px 0;min-width:60px;font-size:13px;text-align:left;min-height:44px}.previous:disabled{color:#adb4a7}.next{border:1px solid var(--ink);background:var(--ink);color:#fffdf3;padding:11px 16px;min-height:44px;font-size:13px;display:flex;gap:21px;justify-content:space-between;align-items:center}.next:hover{background:#445e4f}.guide-disclaimer{font-size:11px;line-height:1.8;color:#6c7568;margin-top:14px}.questions{border-top:1px solid var(--ink);padding-top:34px;padding-bottom:78px}.questions-grid{display:grid;grid-template-columns: .75fr 1.25fr;gap:70px;margin-top:25px}.doctor-note{margin-top:35px;padding:26px;background:#e7e1d4;max-width:310px}.doctor-note>.eyebrow{font-size:10px;color:#706451}.doctor-note>p{font-size:19px;line-height:1.7;letter-spacing:-.7px;margin-top:14px}.doctor-rule{width:26px;height:1px;background:#afa690;margin:24px 0 18px}.doctor-note>span:not(.eyebrow){font-size:13px}.doctor-note strong{font-size:17px;font-weight:600;margin-left:8px}.doctor-note>small{display:block;font-size:10px;color:#6a6556;margin-top:8px}.faq-list{border-top:1px solid #a7b3a2}.faq-list details{border-bottom:1px solid var(--line)}.faq-list summary{list-style:none;cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:20px;font-size:16px;font-weight:500;min-height:68px;padding:19px 0;word-break:keep-all;line-height:1.7}.faq-list summary::-webkit-details-marker{display:none}.faq-list summary>span{font:23px Arial,sans-serif;font-weight:300;transition:transform .18s;flex-shrink:0}.faq-list details[open] summary>span{transform:rotate(45deg)}.faq-answer{font-size:14px;line-height:1.9;color:#566153;padding:0 25px 25px 0}.faq-answer p+p{margin-top:12px}.faq-answer a{display:block;margin:12px 0;text-decoration:underline;text-underline-offset:4px}.faq-list .sources summary{font-size:12px;color:#6c7666;min-height:54px}.source-date{font-size:11px}.footer{display:flex;align-items:center;gap:30px;border-top:1px solid var(--line);min-height:105px}.footer .brand{font-size:19px}.footer p{font-size:12px;color:#6c7567}.footer>a:last-child{margin-left:auto;font-size:12px;padding:14px 0}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.skip{position:absolute;top:-100px;left:20px;background:var(--ink);color:white;padding:12px;z-index:100}.skip:focus{top:10px}.noscript{padding:18px;background:#e7e1d4;line-height:1.8}
[data-region=knee] .anatomy-panel{background:#eee5d8}[data-region=ankle] .anatomy-panel{background:#e1e8ea}
@media(min-width:1400px){.hero{padding-top:76px;padding-bottom:82px}.poster{min-height:548px}h1{font-size:62px}.poster-art svg{max-height:360px}}
@media(max-width:1000px){.wrap{padding-left:28px;padding-right:28px}.hero{gap:30px}h1{font-size:46px;letter-spacing:-2.8px}.poster{min-height:480px}.header-note{display:none}.poster-art svg{max-height:320px}.step-copy{padding:26px 23px 20px}.steps button{font-size:12px;gap:5px}.questions-grid{gap:38px}.body-tab{gap:14px}.diagram-controls>span{margin-top:6px}.region-intro{align-items:flex-start;flex-direction:column;gap:7px}}
@media(max-width:720px){.wrap{padding-left:22px;padding-right:22px}.header{height:78px;gap:10px}.brand{font-size:22px}.brand svg{width:29px;height:29px}.header nav{font-size:11px;gap:16px}.header nav a:last-child{display:none}.hero{grid-template-columns:1fr;padding-top:36px;padding-bottom:42px;gap:33px}h1{font-size:47px;line-height:1.23;letter-spacing:-3px;margin-top:20px}.hero-description{font-size:15px;margin-top:19px}.primary{margin-top:22px;width:100%;min-height:55px}.hero-foot{justify-content:center;font-size:11px;margin-top:19px}.hero-copy>.eyebrow{font-size:11px}.poster{min-height:0;height:295px;display:block}.poster-head{padding:18px 20px 0;font-size:8px;position:relative;z-index:1}.poster-art{position:absolute;width:75%;height:280px;right:-28px;top:5px;opacity:.97;display:block}.poster-art svg{height:100%;max-height:none;overflow:visible}.poster-bottom{position:absolute;left:0;bottom:40px;padding:0 20px;font-size:22px;z-index:1}.poster-bottom>span:first-child{width:180px}.poster-plus{display:none}.poster-caption{position:absolute;bottom:18px;padding:0 20px;font-size:9px}.guide{padding-top:29px;padding-bottom:38px}.section-top{margin-bottom:15px}.small-note{display:none}.eyebrow{font-size:10px}h2{font-size:31px;letter-spacing:-1.6px}.body-tabs{gap:8px;margin-top:24px}.body-tab{min-height:101px;padding:15px 13px;gap:7px;position:relative;align-items:flex-end}.tab-number{position:absolute;left:13px;top:9px;font-size:9px}.tab-name{font-size:23px}.tab-name small{font-size:8px;letter-spacing:1px;margin-top:4px}.tab-mark{font-size:21px;position:absolute;right:12px;top:10px}.region-intro{padding:25px 0 19px;gap:6px}.region-intro h3{font-size:19px}.region-intro p{font-size:13px}.steps{margin-bottom:14px}.steps button{padding:13px 3px 10px;font-size:11px;display:flex;flex-direction:column;gap:7px;line-height:1.5;word-break:keep-all}.steps button>span{width:22px;height:22px;font-size:9px}.explorer{grid-template-columns:1fr;min-height:0}.anatomy-panel{padding:17px 20px 12px}.diagram-top{font-size:9px}.diagram-index{width:25px;height:25px}.anatomy>svg{height:230px}.diagram-controls{flex-wrap:nowrap}.diagram-controls>span{font-size:9px;margin-top:0}.diagram-controls>button{font-size:10px;min-height:36px}.step-copy{padding:24px 23px 21px}.step-copy h3{font-size:25px;margin-top:8px}.step-description{font-size:15px;margin-top:12px}.check-list{gap:12px;margin:19px 0}.check-list li{font-size:14px}.clinical-note{font-size:12px}.step-navigation{margin-top:18px}.next{font-size:13px;padding:12px 15px}.guide-disclaimer{font-size:10px;margin-top:12px}.questions{padding-top:28px;padding-bottom:42px}.questions-grid{grid-template-columns:1fr;gap:25px;margin-top:19px}.doctor-column{display:grid;grid-template-columns:1fr 1fr;gap:16px;align-items:start}.doctor-column h2{font-size:27px;line-height:1.4;letter-spacing:-1.5px}.doctor-note{margin:0;padding:17px 16px}.doctor-note>.eyebrow{font-size:9px}.doctor-note>p{font-size:14px;margin-top:10px}.doctor-rule{margin:14px 0 12px}.doctor-note>span:not(.eyebrow){font-size:10px}.doctor-note strong{font-size:14px;margin-left:6px}.doctor-note>small{font-size:9px;line-height:1.6}.faq-list summary{font-size:14px;min-height:65px;gap:10px}.faq-answer{font-size:13px;padding-right:10px}.footer{min-height:108px;gap:10px;flex-wrap:wrap;padding-top:22px;padding-bottom:22px}.footer .brand{font-size:18px}.footer p{font-size:10px;order:3;flex-basis:100%}.footer>a:last-child{font-size:11px}.footer a{min-height:30px}}
@media(max-width:360px){.wrap{padding-left:18px;padding-right:18px}h1{font-size:40px}.hero-description{font-size:14px}.desktop-br{display:none}.tab-name{font-size:21px}.body-tab{padding-left:11px}.steps button{font-size:10px}.step-copy{padding-left:19px;padding-right:19px}.doctor-column{grid-template-columns:1fr}.doctor-note{max-width:none}.doctor-note>p br{display:none}.poster-bottom{font-size:20px}.diagram-controls>span{font-size:8px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important;animation:none!important}}
@media print{.header nav,.primary,.body-tabs,.steps,.step-navigation,.diagram-controls,.poster,.footer>a:last-child{display:none}.wrap{max-width:none;padding-left:0;padding-right:0}.hero,.questions-grid{display:block}.hero{padding:20px 0}h1{font-size:28px}.hero h1 br{display:none}.hero-description{font-size:12px}.hero-foot{margin-top:12px}.hero-copy>.eyebrow{display:none}.explorer{break-inside:avoid}.step-copy{padding:20px}.anatomy>svg{height:250px}.questions{padding-bottom:0}.doctor-note{display:none}.faq-list details:not([open]){display:none}.guide{padding-bottom:20px}.questions-grid{margin-top:15px}body{background:white}}
