.osteo-lab{--ol-blue:#0b4a82;--ol-blue-2:#0f6db6;--ol-yellow:#f4c542;--ol-ink:#142033;--ol-muted:#65758b;--ol-line:#dce5ee;--ol-bg:#f4f8fc;--ol-card:#fff;--ol-good:#18864b;--ol-bad:#b42318;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ol-ink);background:linear-gradient(180deg,#eaf4ff 0,#f7f9fc 28rem,#f7f9fc 100%);min-height:100vh;line-height:1.55}.osteo-lab *{box-sizing:border-box}.osteo-app-shell{max-width:1600px;margin:0 auto;padding:28px}.osteo-hero{display:flex!important;justify-content:space-between;gap:28px;align-items:flex-end;background:linear-gradient(135deg,#073962,#0b5b98 62%,#0d6eb5);border-radius:28px;padding:34px 38px;color:#fff;box-shadow:0 18px 55px rgba(15,72,120,.18);position:relative;overflow:hidden}.osteo-hero:after{content:"";position:absolute;width:300px;height:300px;right:-80px;top:-160px;border:54px solid rgba(244,197,66,.18);border-radius:50%}.osteo-eyebrow{display:block;text-transform:uppercase;letter-spacing:.14em;font-weight:800;font-size:12px;color:#ffd969;margin-bottom:8px}.osteo-hero h1{margin:0 0 6px;font-size:clamp(32px,5vw,56px);line-height:1.02;color:#fff}.osteo-hero p{margin:0;max-width:750px;font-size:16px;color:rgba(255,255,255,.85)}.osteo-progress-card{min-width:230px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);padding:16px 18px;border-radius:18px;backdrop-filter:blur(8px);position:relative;z-index:2}.osteo-progress-card span{display:block;font-size:12px;text-transform:uppercase;letter-spacing:.08em;opacity:.8}.osteo-progress-card strong{display:block;font-size:22px;margin:3px 0 8px}.osteo-progress-track{height:8px;background:rgba(255,255,255,.15);border-radius:999px;overflow:hidden}.osteo-progress-track i{display:block;height:100%;width:0;background:var(--ol-yellow);border-radius:999px;transition:width .3s ease}.osteo-toolbar{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 0}.osteo-search-wrap{flex:1;max-width:420px;background:#fff;border:1px solid var(--ol-line);border-radius:14px;height:48px;display:flex;align-items:center;padding:0 14px;box-shadow:0 8px 28px rgba(18,53,83,.06)}.osteo-search-wrap span{font-size:22px;color:var(--ol-muted)}.osteo-search-wrap input{border:0!important;outline:0!important;box-shadow:none!important;width:100%;height:100%;font-size:14px;padding:0 10px;background:transparent}.osteo-tabs{display:flex;gap:8px;overflow:auto;padding:2px}.osteo-tabs button,.osteo-btn,.osteo-icon-btn,.osteo-text-btn{font:inherit;cursor:pointer}.osteo-tabs button{white-space:nowrap;border:1px solid var(--ol-line);background:#fff;color:var(--ol-ink);border-radius:999px;padding:9px 14px;font-size:13px;font-weight:700}.osteo-tabs button.is-active{background:var(--ol-blue);border-color:var(--ol-blue);color:#fff}.osteo-layout{display:grid;grid-template-columns:300px minmax(0,1fr);gap:22px;align-items:start}.osteo-sidebar{position:sticky;top:18px;max-height:calc(100vh - 36px);overflow:auto;background:#fff;border:1px solid var(--ol-line);border-radius:22px;padding:12px;box-shadow:0 12px 36px rgba(16,55,88,.07)}.osteo-module-list{display:flex;flex-direction:column;gap:5px}.osteo-module-item{width:100%;border:0;background:transparent;text-align:left;border-radius:13px;padding:11px 12px;display:grid;grid-template-columns:34px 1fr auto;gap:10px;align-items:center;color:var(--ol-ink);cursor:pointer}.osteo-module-item:hover{background:#f1f7fd}.osteo-module-item.is-active{background:#e5f2ff;color:#083d69}.osteo-module-item.is-done .osteo-module-check{background:var(--ol-good);color:#fff}.osteo-module-icon{width:34px;height:34px;border-radius:10px;background:#edf4fb;display:grid;place-items:center;font-size:15px}.osteo-module-name{font-size:13px;font-weight:800;display:block}.osteo-module-latin{font-size:11px;color:var(--ol-muted);font-style:italic;display:block;margin-top:1px}.osteo-module-check{width:20px;height:20px;border-radius:50%;display:grid;place-items:center;border:1px solid #cbd8e4;color:transparent;font-size:11px}.osteo-main{min-width:0}.osteo-card{background:var(--ol-card);border:1px solid var(--ol-line);border-radius:22px;box-shadow:0 12px 36px rgba(16,55,88,.06)}.osteo-module-head{padding:24px 26px;display:flex;justify-content:space-between;gap:20px;align-items:center}.osteo-kicker,.osteo-section-label{font-size:11px;text-transform:uppercase;letter-spacing:.11em;font-weight:900;color:var(--ol-blue-2)}.osteo-module-head h2{font-size:30px;line-height:1.1;margin:5px 0 0}.osteo-latin{font-style:italic;color:var(--ol-muted);font-size:15px;margin-top:3px}.osteo-module-head p{max-width:850px;margin:10px 0 0;color:#46586d}.osteo-actions{display:flex;gap:8px;flex-wrap:wrap;justify-content:flex-end}.osteo-btn{border:1px solid var(--ol-line);background:#fff;border-radius:12px;padding:10px 14px;font-weight:800;font-size:13px;color:var(--ol-ink)}.osteo-btn-primary{background:var(--ol-yellow);border-color:var(--ol-yellow);color:#203044}.osteo-btn.is-done{background:#e9f8ef;border-color:#bfe7cf;color:var(--ol-good)}.osteo-grid{display:grid;grid-template-columns:minmax(0,1.55fr) minmax(280px,.75fr);gap:18px;margin-top:18px}.osteo-viewer-card{padding:18px;min-width:0}.osteo-viewer-top,.osteo-info-head,.osteo-quiz-head{display:flex;align-items:center;justify-content:space-between;gap:14px}.osteo-viewer-top strong{font-size:12px;color:var(--ol-muted);margin-left:6px}.osteo-icon-btn,.osteo-text-btn{border:0;background:#eef4fa;color:#29425b;border-radius:10px;padding:8px 10px;font-size:12px;font-weight:800}.osteo-text-btn{background:transparent;color:var(--ol-blue-2);padding:4px}.osteo-stage{margin-top:14px;min-height:520px;border-radius:17px;background:radial-gradient(circle at 50% 30%,#fff,#eef4f8);border:1px solid #e1e9f0;display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden}.osteo-stage img{display:block;max-width:100%;width:auto;max-height:660px;object-fit:contain}.osteo-image-wrap{width:100%;height:100%;min-height:520px;display:flex;align-items:center;justify-content:center;padding:18px}.osteo-skeleton-loader{text-align:center;color:var(--ol-muted)}.osteo-skeleton-loader>div{height:12px;background:#dae4ed;border-radius:99px;margin:8px auto;animation:osteo-pulse 1.2s infinite alternate}.osteo-skeleton-loader>div:nth-child(1){width:160px}.osteo-skeleton-loader>div:nth-child(2){width:220px}.osteo-skeleton-loader>div:nth-child(3){width:130px}@keyframes osteo-pulse{to{opacity:.35}}.osteo-thumbs{display:flex;gap:9px;overflow:auto;padding-top:12px}.osteo-thumb{flex:0 0 76px;height:66px;border:2px solid transparent;border-radius:12px;background:#f4f7fa;padding:3px;cursor:pointer;overflow:hidden}.osteo-thumb img{width:100%;height:100%;object-fit:cover;border-radius:8px}.osteo-thumb.is-active{border-color:var(--ol-yellow)}.osteo-source{margin-top:12px;background:#f7fafc;border:1px solid var(--ol-line);border-radius:13px;padding:12px 14px;font-size:12px;color:#526378}.osteo-source strong{color:var(--ol-ink)}.osteo-source a{color:var(--ol-blue-2);font-weight:800;text-decoration:none}.osteo-study-card{padding:22px;position:sticky;top:18px}.osteo-info-block+.osteo-info-block{border-top:1px solid var(--ol-line);margin-top:18px;padding-top:18px}.osteo-info-block p{margin:7px 0 0;color:#4b5d72;font-size:14px}.osteo-landmarks{display:flex;flex-direction:column;gap:9px;margin-top:12px}.osteo-landmark{border:1px solid #e0e8ef;border-radius:13px;padding:11px 12px;background:#fbfdff}.osteo-landmark strong{display:block;font-size:13px;color:#17324d}.osteo-landmark span{display:block;font-size:12px;color:var(--ol-muted);margin-top:2px}.osteo-landmark.is-focus{border-color:#efc238;background:#fffaf0;box-shadow:0 0 0 3px rgba(244,197,66,.16)}.osteo-quiz-card{margin-top:18px;padding:22px}.osteo-quiz-head h3{font-size:24px;margin:4px 0 0}.osteo-quiz-image{margin-top:15px;min-height:330px;background:#f1f5f8;border:1px solid var(--ol-line);border-radius:16px;display:grid;place-items:center;padding:14px}.osteo-quiz-image img{max-width:100%;max-height:430px;object-fit:contain}.osteo-quiz-options{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin-top:14px}.osteo-quiz-option{border:1px solid var(--ol-line);background:#fff;border-radius:13px;padding:13px;text-align:left;font-weight:800;cursor:pointer;color:var(--ol-ink)}.osteo-quiz-option:hover{border-color:#9dc2e1;background:#f7fbff}.osteo-quiz-option.is-correct{border-color:#87d4aa;background:#ecfbf2;color:#0b6c39}.osteo-quiz-option.is-wrong{border-color:#f0ada8;background:#fff1f0;color:var(--ol-bad)}.osteo-quiz-feedback{min-height:28px;padding-top:11px;font-size:13px;font-weight:800}.osteo-quiz-feedback.good{color:var(--ol-good)}.osteo-quiz-feedback.bad{color:var(--ol-bad)}.osteo-footnote{padding:18px 4px 2px!important;color:#6c7c8f;font-size:11px;background:transparent!important}.osteo-empty{padding:30px;text-align:center;color:var(--ol-muted)}.osteo-toast{position:absolute;left:50%;bottom:16px;transform:translateX(-50%);background:#12283e;color:#fff;border-radius:999px;padding:9px 14px;font-size:12px;font-weight:800;box-shadow:0 12px 30px rgba(0,0,0,.18)}@media(max-width:1100px){.osteo-layout{grid-template-columns:240px minmax(0,1fr)}.osteo-grid{grid-template-columns:1fr}.osteo-study-card{position:static}.osteo-stage{min-height:430px}.osteo-image-wrap{min-height:430px}}@media(max-width:800px){.osteo-app-shell{padding:14px}.osteo-hero{padding:25px 22px;border-radius:22px;align-items:flex-start;flex-direction:column}.osteo-progress-card{width:100%;min-width:0}.osteo-toolbar{align-items:stretch;flex-direction:column}.osteo-search-wrap{max-width:none}.osteo-layout{display:block}.osteo-sidebar{position:static;max-height:none;margin-bottom:14px;padding:9px;overflow:auto}.osteo-module-list{display:flex;flex-direction:row;overflow:auto}.osteo-module-item{min-width:190px}.osteo-module-head{align-items:flex-start;flex-direction:column;padding:20px}.osteo-actions{justify-content:flex-start}.osteo-module-head h2{font-size:25px}.osteo-stage,.osteo-image-wrap{min-height:350px}.osteo-quiz-options{grid-template-columns:1fr}.osteo-viewer-card,.osteo-study-card,.osteo-quiz-card{border-radius:18px}}@media(max-width:520px){.osteo-tabs{margin-right:-14px;padding-right:14px}.osteo-stage,.osteo-image-wrap{min-height:290px}.osteo-viewer-card{padding:12px}.osteo-source{font-size:11px}.osteo-module-head p{font-size:13px}}
.osteo-caption{margin-top:12px;border:1px solid #dbe7f0;border-left:4px solid var(--ol-yellow);border-radius:13px;background:#fffdf7;padding:13px 15px;color:#405369}.osteo-caption-label{display:block;font-size:10px;text-transform:uppercase;letter-spacing:.1em;font-weight:900;color:#8a6500;margin-bottom:5px}.osteo-caption p{margin:0;font-size:13px;line-height:1.55;color:#334a60}.osteo-caption .osteo-caption-empty{color:var(--ol-muted);font-style:italic}
.osteo-caption .osteo-caption-main{font-weight:800;color:#223d55}.osteo-caption .osteo-caption-description{margin-top:6px;color:#526378;font-size:12px}