:root{color-scheme:dark;--bg:#101817;--panel:#17201e;--edge:#2c3733;--text:#e9ede7;--muted:#93a29a;--accent:#e8b493;--green:#b8cdb9;font-family: -apple-system,BlinkMacSystemFont,"Apple SD Gothic Neo","Noto Sans KR",sans-serif;font-synthesis:none}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-size:14px}button,input,select{font:inherit}button{color:inherit;cursor:pointer;border:none}button:disabled{cursor:default;opacity:.45}button:focus-visible,a:focus-visible,summary:focus-visible,select:focus-visible,input:focus-visible,.viewport:focus-visible{outline:2px solid var(--accent);outline-offset:4px}a{color:inherit;text-decoration:none}.icon-defs{display:none}svg{width:19px;height:19px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}.app-header{height:86px;padding:0 38px;display:flex;align-items:center;gap:24px;border-bottom:1px solid var(--edge)}.brand{display:flex;align-items:center;gap:12px;font-weight:650;font-size:17px;letter-spacing:-.4px}.brand-mark{width:35px;height:35px;color:var(--accent);stroke-width:1.4}.brand small{display:block;margin-top:4px;font-size:9px;font-weight:500;letter-spacing:2.4px;color:var(--muted)}.header-note{margin-left:auto;color:var(--muted);font-size:12px;display:flex;gap:8px;align-items:center}.status-dot{width:5px;height:5px;background:var(--green);border-radius:50%}.text-button{display:flex;align-items:center;gap:8px;background:transparent;color:var(--muted);font-size:12px;padding:8px 0}.text-button:hover{color:var(--text)}.workspace{display:grid;grid-template-columns:minmax(0,1fr) 318px;gap:26px;margin:26px 38px 0;max-width:1900px}.intro{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:22px}.eyebrow{font-size:10px;letter-spacing:2.4px;color:var(--accent);margin:0 0 10px;font-weight:600}h1{margin:0;font-size:28px;font-weight:570;letter-spacing:-1.1px;line-height:1.4}h1 span{color:#b1beb5}.intro-guide{font-size:11px;color:var(--muted);margin:0 0 6px;text-align:right;line-height:1.8}.stage{position:relative;height:calc(100dvh - 242px);min-height:560px;max-height:970px;border:1px solid var(--edge);border-radius:12px;overflow:hidden;background:radial-gradient(ellipse at 60% 40%,#26332d 0%,#1a2520 40%,#121c18 100%)}.stage:after{content:"";position:absolute;left:20%;right:0;bottom:0;height:35%;background:radial-gradient(ellipse,#778d6a12,transparent 65%);pointer-events:none}.stage-top{position:absolute;z-index:4;top:18px;left:18px;right:18px;display:flex;justify-content:space-between;align-items:center}.view-tabs{padding:4px;display:flex;background:#111916d9;border:1px solid #344339;border-radius:8px}.view-tabs button{font-size:12px;padding:9px 15px;border-radius:5px;background:transparent;color:var(--muted)}.view-tabs button[aria-pressed=true]{background:#344237;color:#edf2e9}.icon-button{width:34px;height:34px;border:1px solid #3a453f;border-radius:8px;display:grid;place-items:center;background:#18211dcb;color:#a5b4a9}.icon-button:hover{background:#354036;color:var(--text)}.viewport{position:absolute;inset:0;touch-action:none;outline-offset:-5px!important}.viewport canvas{display:block;width:100%;height:100%}.layer-panel{position:absolute;z-index:4;top:86px;left:18px;width:164px;background:#121c18d9;border:1px solid #334039;border-radius:9px;backdrop-filter:blur(12px)}.layer-panel summary{list-style:none;cursor:pointer;padding:14px;font-size:12px;display:flex;justify-content:space-between;gap:8px;align-items:center}.layer-panel summary::-webkit-details-marker{display:none}.layer-panel summary span{color:var(--muted);font-size:10px;border:1px solid var(--edge);padding:2px 6px;border-radius:3px}.layers{padding:0 7px 7px}.layer-row{display:flex;align-items:center;gap:6px;padding:2px;border-radius:5px}.layer-row.selected{background:#3441366b}.layer-select{background:transparent;display:flex;align-items:center;gap:8px;flex:1;text-align:left;min-width:0;font-size:12px;padding:7px 4px;color:#adbeb0}.layer-select:hover,.selected .layer-select{color:var(--text)}.layer-swatch{height:6px;width:6px;flex-shrink:0;border-radius:50%}.visibility-toggle{background:none;color:#b2c4b7;display:grid;place-items:center;width:28px;height:28px}.visibility-toggle svg{width:14px;height:14px}.visibility-toggle[aria-pressed=false]{opacity:.3}.layer-setting{border-top:1px solid #2b3930;padding:12px 14px;font-size:10px;color:#a9baad}.layer-setting input{margin-top:13px}.switch-row{padding:11px 14px;border-top:1px solid #2b3930;display:flex;align-items:center;justify-content:space-between;font-size:11px;color:#a9baad;position:relative;cursor:pointer}.switch-row input{position:absolute;right:14px;width:27px;height:18px;opacity:0;cursor:pointer}.switch{width:27px;height:16px;background:#435048;border-radius:12px;position:relative;pointer-events:none}.switch:after{content:"";position:absolute;left:3px;top:3px;width:10px;height:10px;background:#a0b0a2;border-radius:50%;transition:transform .2s}.switch-row input:checked+.switch{background:var(--accent)}.switch-row input:checked+.switch:after{background:#3f342a;transform:translateX(11px)}.switch-row input:focus-visible+.switch{outline:2px solid var(--accent);outline-offset:4px}.labels,.orientation{position:absolute;inset:0;pointer-events:none;z-index:3}.part-label{position:absolute;transform:translate(-50%,-50%);padding:6px 9px;white-space:nowrap;font-size:10px;background:#101a16bb;border:1px solid #546352;color:#dae2d7;border-radius:4px;pointer-events:auto;transition:opacity .18s}.part-label.selected{color:var(--accent);border-color:#947d65;background:#292b20ee}.part-label:before{content:"";width:3px;height:3px;border-radius:50%;background:currentColor;display:inline-block;margin-right:6px;vertical-align:middle}.orientation span{position:absolute;font-size:10px;color:#96ac95;letter-spacing:.5px;transform:translate(-50%,-50%);padding:3px 6px;border-bottom:1px solid #61775670;white-space:nowrap}.stage-bottom{position:absolute;bottom:47px;left:18px;right:18px;z-index:4;display:flex;justify-content:space-between;align-items:center;gap:12px}.camera-presets{display:flex;gap:5px}.camera-presets button{font-size:11px;background:#152019de;padding:9px 13px;border:1px solid #3a483d;border-radius:5px;color:#a6bba9}.camera-presets button:hover,.camera-presets button[aria-pressed=true]{color:var(--text);border-color:#8a9e89;background:#344336}.mouse-help{font-size:10px;color:#829982;display:flex;gap:10px;align-items:center}.mouse-help i{font-style:normal;color:#4d614d}.model-caption{position:absolute;bottom:17px;left:20px;font-size:9px;color:#829980;z-index:4;display:flex;align-items:center;gap:7px;letter-spacing:.15px}.caption-line{width:15px;height:1px;background:#91a789}.load-status{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);z-index:5;font-size:12px;display:flex;align-items:center;gap:12px;text-align:center;color:var(--muted);background:#132019f2;padding:18px 22px;border-radius:8px}.load-status.error{color:var(--accent);max-width:300px;line-height:1.8}.loading-ring{width:16px;height:16px;border:2px solid #647461;border-top-color:transparent;border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}[hidden]{display:none!important}.study-panel{padding-top:0;align-self:start}.part-card{padding:23px 23px 17px;border:1px solid var(--edge);background:#17221d;border-radius:10px}.section-kicker{display:flex;align-items:center;gap:8px;color:var(--muted);font-size:11px;margin:0 0 22px}.part-dot{width:7px;height:7px;border-radius:50%;background:#eee4d1}.part-card h2{font-size:26px;font-weight:550;letter-spacing:-1px;margin:0 0 5px}.english-name{margin:0;font-size:10px;letter-spacing:1.2px;color:var(--muted)}.part-description{margin:18px 0;font-size:12px;line-height:1.95;color:#c5d0c6;min-height:70px}.role-note{border-left:2px solid #657d62;padding-left:13px;margin:0 0 9px}.role-note>span,.muscle-note>span{font-size:10px;color:#92a68e}.role-note p{font-size:11px;line-height:1.8;color:#a9bda8;margin:7px 0 0}.part-focus{font-size:11px;color:var(--accent);margin-top:15px;padding:7px 0}.part-focus svg{width:15px;height:15px}.motion-card{padding:22px 2px 0}.section-title{display:flex;align-items:center;justify-content:space-between;margin-bottom:15px}.section-title h2{margin:0;font-size:15px;font-weight:550}.small-tag{font-size:8px;letter-spacing:1.7px;color:#879d86}.motion-tabs{display:flex;padding:4px;gap:4px;background:#1c2921;border-radius:7px;border:1px solid #324335}.motion-tabs button{flex:1;background:transparent;padding:10px;border-radius:4px;font-size:12px;color:#a2b29d}.motion-tabs button[aria-pressed=true]{background:var(--accent);color:#34281e;font-weight:600}.motion-description{font-size:11px;line-height:1.85;color:#aabcaa;min-height:42px;margin:13px 0 18px}.control-label{display:flex;align-items:center;justify-content:space-between;font-size:11px;color:#c3d1bf;margin-bottom:10px}.control-label output{font-size:10px;color:var(--accent)}input[type=range]{appearance:none;-webkit-appearance:none;width:100%;height:3px;background:#41513e;border-radius:4px;outline:none;margin:8px 0 10px;cursor:pointer;accent-color:var(--accent)}input[type=range]::-webkit-slider-thumb{appearance:none;-webkit-appearance:none;width:12px;height:12px;border-radius:50%;background:var(--accent);border:2px solid #303425;box-shadow:0 0 0 3px #e8b49315}input[type=range]::-moz-range-thumb{width:10px;height:10px;border-radius:50%;background:var(--accent);border:2px solid #303425}.range-ends{display:flex;justify-content:space-between;font-size:9px;color:#82997c;margin-top:2px}.playback{display:flex;align-items:center;gap:10px;margin-top:21px}.play-button{display:flex;align-items:center;justify-content:center;gap:7px;border:1px solid #486044;border-radius:6px;padding:10px 12px;flex:1;background:#243622;font-size:11px;color:#cbdcc4}.play-button svg{width:13px;height:13px;stroke-width:2}.speed-control{display:flex;align-items:center;gap:7px}.speed-control label{font-size:10px;color:#829c7d}.speed-control select{background:#18251b;border:1px solid #3a5034;border-radius:5px;font-size:11px;padding:8px 4px;color:#c9d9c1}.playback-note{font-size:9px;color:#7d9776;line-height:1.9;margin:12px 0 0}.muscle-note{margin-top:18px;border-top:1px solid #2e402b;padding-top:13px}.muscle-note p{font-size:10px;line-height:1.9;color:#a5b99e;margin:7px 0 0}.phase-control{margin-top:16px}.phase-control .control-label{font-size:10px}.explore-tip{font-size:10px;line-height:1.8;color:#8da584;background:#1b2a1c;border-radius:7px;padding:12px 14px;margin:17px 0 0}footer{display:flex;justify-content:space-between;margin:18px 38px 16px;color:#687d64;font-size:9px;letter-spacing:.25px}dialog{width:min(620px,calc(100% - 32px));max-height:85dvh;border:1px solid #435041;border-radius:14px;background:#17241c;padding:29px;color:#dce5d8;box-shadow:0 30px 100px #0007}dialog::backdrop{background:#070e09bb;backdrop-filter:blur(7px)}.dialog-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:15px}.dialog-head .eyebrow{margin:0}dialog h2{font-size:25px;font-weight:550;letter-spacing:-.7px;margin:0 0 16px}dialog>p{font-size:12px;line-height:2;color:#b2c4a9}dialog h3{font-size:13px;margin:25px 0 10px}.source-link{display:block;padding:13px 0;border-top:1px solid #344730;font-size:12px}.source-link>span{color:var(--accent);display:block;margin-bottom:5px}.source-link small{color:#93ad8a;line-height:1.75}.license-note{font-size:10px!important;color:#7e9875!important;border-top:1px solid #344730;padding-top:16px;margin-top:16px}
@media(min-width:1650px){.workspace{margin-left:auto;margin-right:auto;width:calc(100% - 76px);grid-template-columns:minmax(0,1fr) 340px}.stage{min-height:680px}.intro-guide{font-size:12px}.part-description{font-size:13px}}
@media(max-width:1150px){.app-header{padding:0 24px}.workspace{margin:24px 24px 0;gap:19px;grid-template-columns:minmax(0,1fr) 280px}.intro-guide{display:none}h1{font-size:24px}.part-card{padding:20px 18px 14px}.layer-panel{width:148px}.layer-select{font-size:11px}.mouse-help{display:none}footer{margin-left:24px;margin-right:24px}}
@media(max-width:850px){.app-header{height:74px}.header-note{display:none}.app-header>.text-button{margin-left:auto;font-size:10px}.workspace{display:block;margin:22px 18px 0}.intro{margin-bottom:17px}.stage{height:620px;min-height:0}.study-panel{display:grid;grid-template-columns:1fr 1fr;gap:20px;padding-top:22px}.motion-card{padding:5px 0 0}.explore-tip{grid-column:1/-1;margin:0}.part-description{min-height:0}footer{margin:18px}.layer-panel{width:148px}}
@media(max-width:560px){.app-header{padding:0 18px;gap:10px}.brand{font-size:15px;gap:8px}.brand-mark{width:29px}.brand small{font-size:8px;letter-spacing:1.8px}.app-header>.text-button svg{display:none}.workspace{margin:20px 12px 0}h1{font-size:22px}.eyebrow{font-size:9px}.intro{padding:0 5px}.stage{height:560px}.stage-top{left:12px;right:12px;top:12px}.view-tabs button{font-size:11px;padding:8px 12px}.layer-panel{left:12px;top:66px;width:132px}.layer-panel summary{padding:11px;font-size:11px}.layer-setting{padding:10px}.layer-select{font-size:10px;gap:5px}.layer-row{gap:2px}.visibility-toggle{width:23px}.switch-row{padding:10px}.stage-bottom{left:12px;right:12px;bottom:43px}.camera-presets button{padding:8px 11px;font-size:10px}.model-caption{font-size:8px;left:14px;bottom:14px}.study-panel{display:block;padding:18px 6px 0}.motion-card{padding-top:25px}.explore-tip{margin-top:18px}.part-label{font-size:9px;padding:5px 7px}footer{line-height:1.7;font-size:8px;gap:20px}.part-card{padding:22px}.part-description{font-size:12px;line-height:1.9}.layer-panel:not([open]){background:#121c18ee}}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}

.stage{overflow:clip}
input[type=range]:disabled{opacity:.45;cursor:default}
.brand{gap:16px}.brand-logo-frame{display:flex;align-items:center;flex-shrink:0}.brand-logo{display:block;width:72px;height:43px;object-fit:contain}.brand-text{display:block;border-left:1px solid var(--edge);padding-left:16px;line-height:1.3}.brand-text small{letter-spacing:2.1px}
@media(max-width:560px){.brand{gap:11px}.brand-logo{width:57px;height:34px}.brand-text{padding-left:11px;font-size:14px}.brand-text small{font-size:7px;letter-spacing:1.4px}}
.control-mode-tabs{display:flex;gap:3px;margin-bottom:13px;padding:3px;border:1px solid #344236;border-radius:7px;background:#17231b}.control-mode-tabs button{flex:1;padding:9px 10px;border-radius:4px;background:transparent;color:var(--muted);font-size:11px}.control-mode-tabs button[aria-pressed=true]{background:#344234;color:var(--text)}.muscle-card{padding-top:22px}.muscle-choices{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:5px}.muscle-choice{background:#1b2922;border:1px solid #39483d;border-radius:6px;padding:10px 2px;color:#a8b9ad;font-size:12px;font-weight:600;position:relative}.muscle-choice:before{content:"";display:block;width:5px;height:5px;border-radius:50%;background:var(--muscle-color);margin:0 auto 7px}.muscle-choice[aria-pressed=true]{color:var(--muscle-color);border-color:var(--muscle-color);background:#2b3830}.muscle-choice small{display:block;font-size:8px;font-weight:400;letter-spacing:-.1px;margin-top:5px;color:#9eb3a3}.attachments{margin-top:15px;padding-top:12px;border-top:1px solid #314333}.attachments>span{font-size:9px;color:#8da98c}.attachments p{font-size:10px;line-height:1.8;color:#a9c0a5;margin:6px 0 0}.action-heading{display:flex;gap:8px;align-items:center;justify-content:space-between;margin-top:18px;font-size:12px;color:#c9d8c2}.teaching-tag{font-size:8px;color:#8fa28a;border:1px solid #3c4c37;border-radius:3px;padding:3px 5px;white-space:nowrap}.action-presets{display:flex;gap:7px;margin-top:13px}.action-presets button{flex:1;padding:8px;font-size:10px;border:1px solid #3c5137;border-radius:5px;background:#1e2c1f;color:#aec5a5}.action-presets button:hover{background:#354732;color:#e5eedf}.muscle-card .playback{margin-top:12px}.arrows-switch{display:flex;gap:8px;align-items:center;font-size:10px;color:#9eb496;margin-top:16px;cursor:pointer}.arrows-switch input{accent-color:var(--accent);width:13px;height:13px;margin:0}.muscle-caution{font-size:10px;color:#9fb29b;line-height:1.85;border-top:1px solid #30402b;margin:14px 0 0;padding-top:12px}.muscle-card .motion-description{margin:10px 0 15px;min-height:0}.study-panel.muscle-mode .part-card h2{font-size:22px;letter-spacing:-.6px}.study-panel.muscle-mode .part-description{margin:13px 0;min-height:0;font-size:11px}.study-panel.muscle-mode .section-kicker{margin-bottom:15px}.study-panel.muscle-mode .part-focus{margin-top:10px}.study-panel.muscle-mode .part-card{padding-top:18px}.muscle-layer{border-bottom:1px solid #2b3930}.model-caption{max-width:calc(100% - 35px)}.model-caption>span:last-child{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
@media(max-width:850px){.control-mode-tabs{grid-column:1/-1;margin-bottom:0}.muscle-card{padding-top:5px}.study-panel.muscle-mode .part-description{font-size:12px}.study-panel.muscle-mode .part-card h2{font-size:23px}}
@media(max-width:560px){.control-mode-tabs{margin-bottom:15px}.muscle-card{padding-top:24px}.view-tabs button{padding:8px 9px;font-size:10px}.camera-presets{gap:4px}.camera-presets button{padding:8px 8px;font-size:9px}.muscle-choices{gap:6px}.muscle-choice{padding:11px 4px}.muscle-choice small{font-size:9px}.layer-panel{max-height:calc(100% - 145px);overflow-y:auto}.attachments p,.muscle-caution{font-size:11px}.muscle-card .motion-description{font-size:12px}.part-card .english-name{line-height:1.8}}
.combo-help{font-size:10px;color:#adbfab;margin:12px 0 9px}.combo-presets{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:5px}.combo-presets button{border:1px solid #3b4e39;border-radius:5px;background:#1c2b20;font-size:10px;color:#bfd1b8;padding:8px 2px;white-space:nowrap}.combo-presets button small{display:block;font-size:8px;color:#8fa88c;margin-top:4px}.combo-presets button[aria-pressed=true]{border-color:#c5a97d;background:#354030;color:#e8c497}.combo-weights-heading{display:flex;justify-content:space-between;font-size:9px;color:#91a68a;margin:15px 0 7px}.combo-weight{display:grid;grid-template-columns:31px minmax(0,1fr) 25px;align-items:center;gap:10px;padding:6px 0}.combo-weight label{font-size:11px;font-weight:600;color:var(--muscle-color)}.combo-weight input{margin:8px 0;accent-color:var(--muscle-color)}.combo-weight input::-webkit-slider-thumb{background:var(--muscle-color)}.combo-weight input::-moz-range-thumb{background:var(--muscle-color)}.combo-weight output{font-size:10px;text-align:right;color:#c5d2be;font-variant-numeric:tabular-nums}.combo-empty{font-size:11px;line-height:1.7;color:#aabcaa;padding:12px 0;margin:0}.combo-result{background:#1d2c21;border:1px solid #3a4e35;border-radius:7px;padding:12px;margin:12px 0 18px}.combo-result-heading{display:flex;justify-content:space-between;gap:5px;align-items:center;font-size:11px;color:#d1dcc9}.combo-result-heading small{font-size:8px;color:#8fa68a}.combo-result dl{display:grid;grid-template-columns:1fr 1fr;gap:12px 10px;margin:13px 0 0}.combo-result dt{font-size:9px;color:#91a78c}.combo-result dd{font-size:12px;color:#e5be92;margin:4px 0 0}.muscle-mode .action-heading{margin-top:13px}.muscle-mode .motion-description{font-size:10px;line-height:1.8}.muscle-mode .muscle-caution{font-size:9px}.muscle-mode .playback-note{margin-top:8px}
@media(max-width:560px){.muscle-mode .motion-description{font-size:12px}.muscle-mode .muscle-caution{font-size:11px}.combo-help{font-size:11px}.combo-presets button{font-size:11px;padding:10px 2px}.combo-presets button small,.combo-weights-heading,.combo-result-heading small{font-size:9px}.combo-weight{padding:8px 0}.combo-result dt{font-size:10px}.combo-result dd{font-size:13px}}

.learn-more{margin-top:22px;padding:20px;border:1px solid var(--edge);border-radius:10px;background:var(--panel)}.learn-more .eyebrow{font-size:9px;letter-spacing:1.1px;margin-bottom:10px}.learn-more h2{font-size:16px;font-weight:550;letter-spacing:-.5px;margin:0}.learn-more-description{color:#adbbb1;font-size:11px;line-height:1.9;margin:10px 0 16px}.youtube-link{display:flex;align-items:center;gap:9px;padding:12px;border:1px solid #65594c;border-radius:6px;color:var(--accent);background:#e8b49308;font-size:11px;line-height:1.6;transition:background .18s,border-color .18s}.youtube-link:hover{background:#e8b49314;border-color:var(--accent)}.youtube-link>svg{flex-shrink:0;width:18px;height:18px}.youtube-link .external-icon{width:13px;height:13px;margin-left:auto}.footer-note{display:flex;align-items:center;gap:18px;line-height:1.8}footer{align-items:center;gap:20px;flex-wrap:wrap}.brand-hub-link{display:flex;align-items:center;gap:7px;color:var(--muted);font-size:10px;padding:8px 0;line-height:1.7}.brand-hub-link:hover{color:var(--accent)}.brand-hub-link svg{width:12px;height:12px;flex-shrink:0}
@media(max-width:850px){.learn-more{grid-column:1/-1;margin-top:0}.learn-more-description br{display:none}.youtube-link{width:fit-content;gap:12px}.footer-note{align-items:flex-start;flex-direction:column;gap:3px}}
@media(max-width:560px){.learn-more{margin-top:18px;padding:20px}.learn-more-description{font-size:12px}.youtube-link{width:100%;font-size:12px}.brand-hub-link{font-size:11px}footer{align-items:flex-start;flex-direction:column;gap:8px}}