.aoi2{--blue:#1469bd;--ink:#17314f;--light:#eff8ff;--line:#dcebf7;font:15px/1.6 system-ui,-apple-system,'Segoe UI',sans-serif;color:var(--ink);max-width:1200px;margin:20px auto;background:white;border:1px solid var(--line);border-radius:20px;overflow:hidden;box-shadow:0 12px 48px #2e6b9b19}.aoi2 *{box-sizing:border-box}.aoi2 button,.aoi2 input,.aoi2 select{font:inherit}.aoi2 button{cursor:pointer}.aoi2-head{padding:30px;display:flex;justify-content:space-between;align-items:center;gap:25px;background:linear-gradient(115deg,#fff 25%,#e2f3ff 100%)}.aoi2-head small{letter-spacing:2px;font-size:11px;color:#477aa5;font-weight:800}.aoi2-head h2{font-size:clamp(23px,3vw,34px);margin:5px 0;color:#123a68}.aoi2-head h2 span{background:#c7e9ff;color:#12629d;padding:1px 9px;border-radius:9px;font-size:16px}.aoi2-head p{margin:0;max-width:690px}.aoi2-count{background:white;border:1px solid var(--line);border-radius:16px;min-width:120px;display:flex;flex-direction:column;padding:12px;text-align:center}.aoi2-count strong{font-size:28px;color:var(--blue);line-height:1.2}.aoi2-count span{font-size:11px}.aoi2-nav{display:flex;gap:8px;padding:12px 18px;overflow-x:auto;border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:#f8fcff}.aoi2-nav button{white-space:nowrap;background:white;border:1px solid var(--line);border-radius:11px;padding:9px 14px;color:#31567a;font-weight:650}.aoi2-nav button.active,.aoi2-nav button:hover{background:var(--blue);color:white}.aoi2-stage{min-height:380px;padding:24px}.aoi2-tools{display:flex;gap:12px;align-items:center;margin-bottom:15px}.aoi2-tools input{flex:1;min-width:100px}.aoi2-tools input,.aoi2-tools select,.aoi2-motion select{background:white;color:var(--ink);padding:10px 12px;border:1px solid #c9ddec;border-radius:9px;max-width:100%}.aoi2-tools span{white-space:nowrap;font-size:12px;color:#667}.aoi2-grid{display:grid;grid-template-columns: minmax(190px,32%) minmax(0,1fr);gap:18px}.aoi2-list{max-height:550px;overflow:auto;border:1px solid var(--line);border-radius:12px}.aoi2-list button{width:100%;display:block;text-align:left;border:0;border-bottom:1px solid #edf2f7;background:#fff;color:var(--ink);padding:10px 13px;font-weight:700}.aoi2-list button small{display:block;color:#789;font-size:11px;font-weight:400}.aoi2-list button.selected,.aoi2-list button:hover{background:#e6f3ff}.aoi2-detail{padding:22px;border:1px solid var(--line);border-radius:14px;background:linear-gradient(#fff,#f8fcff)}.aoi2-detail h3{font-size:25px;margin:8px 0 20px}.aoi2-pill{display:inline-block;border-radius:40px;background:#e3f2ff;padding:4px 11px;color:#21639a;font-size:12px}.aoi2-fields{display:grid;grid-template-columns:1fr 1fr;gap:12px}.aoi2-fields>div{background:white;border:1px solid #e0edf6;border-radius:10px;padding:12px}.aoi2-fields b{font-size:12px;color:#1269ad}.aoi2-fields p{margin:4px 0;font-size:14px}.aoi2-primary{background:#1675c3!important;color:white!important;border:1px solid #1675c3!important;border-radius:10px;padding:10px 15px;font-weight:750}.aoi2-detail>.aoi2-primary{margin-top:18px}.aoi2-body{display:grid;grid-template-columns:1.5fr 1fr;gap:25px}.aoi2-body h3,.aoi2-motion h3{margin:0 0 8px}.aoi2-body p{color:#53667b}.aoi2-figure{position:relative;max-width:680px;background:#f5faff;border:1px solid var(--line);padding:10px;border-radius:14px;min-height:250px}.aoi2-figure img{width:100%;max-height:430px;object-fit:contain;display:block}.aoi2-hot{position:absolute;border-radius:50%;width:29px;height:29px;background:#096bb5;color:white;border:2px solid white;font-weight:750;box-shadow:0 2px 8px #13507b66}.aoi2-hot:hover{transform:scale(1.16)}.aoi2-hot.hot1{left:25%;top:11%}.aoi2-hot.hot2{left:36%;top:29%}.aoi2-hot.hot3{left:27%;top:43%}.aoi2-hot.hot4{left:17%;top:40%}.aoi2-hot.hot5{left:67%;top:66%}.aoi2-hot.hot6{left:78%;top:85%}.aoi2-fallback{padding:50px 20px;text-align:center;color:#687}.aoi2-reg{display:flex;justify-content:space-between;align-items:center;width:100%;padding:12px;margin:6px 0;border:1px solid var(--line);background:#f9fcff;text-align:left;border-radius:10px;color:#204f78}.aoi2-reg:hover{background:#dff0ff}.aoi2-reg small{color:#5683a5}.aoi2-center{text-align:center;max-width:660px;margin:20px auto}.aoi2-card{width:100%;min-height:250px;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:30px;border:1px solid #c7e7fc;border-radius:20px;background:linear-gradient(135deg,#fff,#dff2ff);color:#143d68;box-shadow:0 10px 30px #1475c321}.aoi2-card h3{font-size:clamp(23px,3vw,35px);margin:12px 0}.aoi2-card p{margin:3px 0}.aoi2-card small{letter-spacing:2px}.aoi2-actions{display:flex;justify-content:center;flex-wrap:wrap;gap:9px;margin-top:18px}.aoi2-actions button,.aoi2-result button{padding:10px 13px;background:white;border:1px solid var(--line);border-radius:10px;color:#345}.aoi2-exam{max-width:780px;margin:auto}.aoi2-examtop{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}.aoi2-track{height:8px;background:#edf4fa;border-radius:20px;margin:17px 0}.aoi2-track i{display:block;height:100%;background:#168bd4;border-radius:20px}.aoi2-exam h3{font-size:21px;margin-bottom:22px}.aoi2-answer{width:100%;display:block;text-align:left;padding:14px 17px;margin-bottom:10px;border:1px solid #d5e5f1;border-radius:12px;background:#f8fcff;color:#173c5e}.aoi2-answer:hover:not(:disabled){border-color:#168bd4;background:#e8f5ff}.aoi2-answer.correct{background:#e1f5e9;border-color:#53ae78}.aoi2-answer.wrong{background:#ffeded;border-color:#d78383}.aoi2-feedback{margin-top:20px;padding:16px;border:1px solid var(--line);border-radius:12px;background:#f4faff}.aoi2-result{text-align:center;padding:70px 10px}.aoi2-big{font-size:60px;font-weight:900;color:var(--blue)}.aoi2-motion{display:grid;grid-template-columns:1fr 1fr;gap:20px}.aoi2-sim{min-height:350px;background:linear-gradient(135deg,#eff8ff,#d9efff);border-radius:15px;display:flex;flex-direction:column;justify-content:center;align-items:center}.aoi2-simbody{height:210px;width:180px;position:relative}.aoi2-fixed{height:125px;width:26px;border-radius:20px;background:#5c8aa7;position:absolute;top:5px;left:80px;transform:rotate(20deg)}.aoi2-joint{position:absolute;width:35px;height:35px;border-radius:50%;background:#1d6396;top:118px;left:76px;z-index:2}.aoi2-limb{position:absolute;width:25px;height:95px;border-radius:15px;background:#168bd4;left:81px;top:130px;transform-origin:12px 3px;transform:rotate(-5deg)}.aoi2-sim.playing .aoi2-limb{animation:aoi2bend 2.2s ease-in-out 2 alternate}.aoi2-sim small{padding:20px;text-align:center}@keyframes aoi2bend{from{transform:rotate(-5deg)}to{transform:rotate(-105deg)}}.aoi2-footer{border-top:1px solid var(--line);padding:14px 24px;font-size:12px;color:#607d95;background:#fafcfe}.aoi2 a{color:#1377bd}@media(max-width:700px){.aoi2-head{padding:19px;align-items:flex-start}.aoi2-count{min-width:75px}.aoi2-stage{padding:14px}.aoi2-grid,.aoi2-body,.aoi2-motion{grid-template-columns:1fr}.aoi2-list{max-height:230px}.aoi2-fields{grid-template-columns:1fr}.aoi2-tools{flex-wrap:wrap}.aoi2-tools input{min-width:100%}.aoi2-nav{padding:10px}}

/* Motion lab 3.0; scoped to the plugin */
.aoi2 .aoi2-motion-v3{grid-template-columns:minmax(0,1fr) minmax(0,1fr);align-items:start;gap:22px}.aoi2 .aoi2-mpanel,.aoi2 .aoi2-mvisual{border:1px solid #d6e9f8;border-radius:17px;padding:22px;background:#fff;min-width:0}.aoi2 .aoi2-mvisual{background:linear-gradient(135deg,#f8fcff,#e3f3ff);text-align:center}.aoi2 .aoi2-mpanel p{color:#536980}.aoi2 .aoi2-mfield{display:grid;gap:7px;font-weight:700;margin:16px 0}.aoi2 .aoi2-mfield select{width:100%}.aoi2 .aoi2-angleheader{display:flex;justify-content:space-between;align-items:center;margin-top:17px}.aoi2 .aoi2-angleheader strong{font-size:30px;color:#1269ac}.aoi2 [data-angle]{width:100%;accent-color:#147bba;cursor:pointer;margin:10px 0}.aoi2 .aoi2-mrange,.aoi2 .aoi2-mcaption,.aoi2 .aoi2-mlegend{display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap}.aoi2 .aoi2-mrange,.aoi2 .aoi2-mcaption span{color:#637f97;font-size:12px}.aoi2 .aoi2-mbuttons{display:flex;gap:8px;flex-wrap:wrap;margin:18px 0}.aoi2 .aoi2-mbuttons button{padding:9px 12px;border:1px solid #cce0ef;background:#fff;border-radius:10px;color:#24557a}.aoi2 .aoi2-mfacts{display:grid;gap:9px}.aoi2 .aoi2-mfacts div{border-bottom:1px solid #e4eef6;padding:6px 0}.aoi2 .aoi2-mfacts dt{font-size:12px;font-weight:800;color:#3373a5}.aoi2 .aoi2-mfacts dd{margin:2px 0;color:#25455f}.aoi2 .aoi2-mnote{background:#f0f8ff;padding:12px;border-radius:9px}.aoi2 .aoi2-mvisual svg{width:100%;max-height:390px;overflow:visible}.aoi2 .aoi2-mvisual [data-limb]{transition:transform 45ms linear;transform-box:view-box}.aoi2 .aoi2-svglabel{font:12px system-ui,sans-serif;fill:#496e89}.aoi2 .aoi2-mvisual>p{font-size:12px;text-align:left;color:#60778c}.aoi2 .aoi2-mlegend{font-size:12px}.aoi2 .aoi2-dot{display:inline-block;width:10px;height:10px;border-radius:50%;margin-right:5px}.aoi2 .aoi2-dot.move{background:#3295cd}.aoi2 .aoi2-dot.fixed{background:#8daec3}@media(max-width:800px){.aoi2 .aoi2-motion-v3{grid-template-columns:1fr}.aoi2 .aoi2-mpanel,.aoi2 .aoi2-mvisual{padding:15px}}@media(prefers-reduced-motion:reduce){.aoi2 .aoi2-mvisual [data-limb]{transition:none}}

.aoi2-detail-image{background:#f4faff;border:1px solid #dcebf7;border-radius:12px;margin:0 0 18px;padding:10px;text-align:center}.aoi2-detail-image img{display:block;max-width:100%;width:auto;height:220px;object-fit:contain;margin:auto}.aoi2-detail-image small{font-size:11px;color:#59738a;display:block;margin-top:8px}.aoi2-figure img{min-height:240px;object-fit:contain}

.aoi2-noimage{background:#eef5fa;border:1px solid #dae7f2;border-radius:14px;padding:12px;text-align:center}.aoi2-noimage img{max-height:220px;object-fit:contain}.aoi2-noimage small{display:block;color:#476075;margin-top:8px}.aoi2-detail-image>img{width:100%;height:260px;object-fit:contain;background:white}.aoi2-detail-image a{overflow-wrap:anywhere}

/* v2.6: no misleading muscle silhouettes */
.aoi2-nopicture{display:flex;min-height:220px;flex-direction:column;align-items:center;justify-content:center;gap:14px;background:#f7fafc;border:1px dashed #8faabd;border-radius:15px;padding:22px;color:#244560;text-align:center}.aoi2-nopicture small{max-width:350px;line-height:1.65}.aoi2-verified-image{display:flex;align-items:center;justify-content:center;min-height:220px}.aoi2-verified-image img{width:100%;max-height:420px;object-fit:contain}.aoi2-load-failure{padding:22px;background:#fff7f1;color:#75451f}.aoi2-body-guide{height:320px;border-radius:18px;background:#e9f4ff;display:flex;align-items:center;justify-content:center;text-align:center;padding:25px;color:#245276}