.st-page{max-width:1320px;margin:0 auto;color:#25365e}.st-page *{box-sizing:border-box}.st-intro{text-align:center;max-width:800px;margin:35px auto 70px}.st-intro h1{font-size:clamp(36px,5vw,72px);line-height:1.06;letter-spacing:-.04em;margin:20px 0}.st-intro em{font-style:normal;color:#2956c9}.st-intro p{font-size:20px;color:#64748a;line-height:1.6;margin:25px 0}.st-tour{background:linear-gradient(150deg,#e2eaf3,#f7f9fc);border:1px solid #dbe3ed;border-radius:30px;padding:clamp(16px,3vw,40px);margin-bottom:70px}.st-tour-head{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:30px}.st-tour-head h2{font-size:clamp(24px,3vw,36px);margin:10px 0;line-height:1.15}.st-badge{font:12px system-ui;color:#63758b;white-space:nowrap}.st-laptop{max-width:1120px;margin:auto}.st-lid{border:3px solid #8b929c;background:#202733;padding:19px 13px 13px;border-radius:25px 25px 8px 8px;box-shadow:0 16px 40px #20365320;position:relative}.st-camera{position:absolute;top:6px;left:50%;height:5px;width:5px;border-radius:50%;background:#45576c}.st-screen{background:#f8faff;border-radius:10px;overflow:hidden}.st-appbar{display:flex;justify-content:space-between;gap:12px;padding:14px 22px;background:white;border-bottom:1px solid #dce5f1;font:12px system-ui}.st-appbar b{color:#2855cb;font-size:17px}.st-mode{color:#718096}.st-appbody{display:grid;grid-template-columns:180px minmax(0,1fr)}.st-sidebar{background:#edf1f8;padding:20px 12px;display:flex;flex-direction:column;gap:12px}.st-page button{font:600 13px system-ui;min-height:44px;border:1px solid #cbd6e7;border-radius:9px;background:white;color:#25365e;padding:10px 14px;box-shadow:none;cursor:pointer}.st-sidebar button{text-align:left;padding:14px 10px;display:grid;grid-template-columns:22px 1fr;gap:5px}.st-sidebar small{grid-column:2;font:10px system-ui;color:#66788e}.st-sidebar [aria-pressed=true]{background:#dce6fa;border-color:#5378c3}.st-sidebar button>span{font-size:10px;color:#7586a0}.st-lesson{padding:20px 28px;min-width:0}.st-lesson-meta{font:700 10px system-ui;letter-spacing:.08em;text-transform:uppercase;color:#7759a4}.st-lesson h3{font:700 clamp(19px,2vw,26px)/1.2 system-ui;margin:12px 0;min-height:32px}.st-picture{height:215px;display:flex;align-items:center;justify-content:center;border-radius:15px;background:#f1f4fb;padding:15px;position:relative}.st-picture>svg{width:100%;height:100%;max-width:400px;object-fit:contain}.st-picture .fq-fair{width:min(100%,360px);height:100px;display:flex;border:3px solid white;box-shadow:0 0 0 1px #b5c3da}.st-picture .fq-fair>span{display:flex;align-items:center;justify-content:center;border:2px solid white;color:#25365e;font:700 24px system-ui}.st-explaining{outline:2px solid #bf9345;outline-offset:-2px}.st-hint{font:600 13px system-ui;color:#816024;text-align:center;height:28px;padding-top:7px}.st-answers{display:flex;justify-content:center;flex-wrap:wrap;gap:8px;min-height:55px}.st-answers button{min-width:95px;position:relative}.st-answers button small{display:block;font:700 9px system-ui;margin-top:3px}.st-answers .st-selected{border:2px solid #7654b0;background:#e9e0f6}.st-feedback{font:13px/1.5 system-ui;color:#526780;min-height:80px;margin:12px 0 0;padding:10px 12px;background:#edf3f8;border-radius:9px}.st-lesson-actions{display:flex;gap:7px;flex-wrap:wrap;margin-top:12px}.st-lesson-actions button{font-size:11px;padding:9px}.st-lesson-actions [data-st-next]{margin-left:auto;background:#2855cb;color:white}.st-page button:disabled{opacity:.45;cursor:not-allowed}.st-page button:focus-visible{outline:3px solid #a87929;outline-offset:3px}.st-base{height:20px;margin:0 -2%;background:linear-gradient(#d7dbe1,#a9afb7 55%,#e0e3e7 62%,#858b95);border-radius:0 0 45% 45%;box-shadow:0 14px 18px #263a5520}.st-base i{display:block;margin:auto;width:17%;height:6px;background:#88929f;border-radius:0 0 8px 8px}.st-controls{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-top:30px}.st-tour-caption{font:12px/1.5 system-ui;color:#64748a;margin-left:auto;max-width:300px}.st-benefits{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:40px;margin:0 20px 70px}.st-benefits>div>span{font:700 13px system-ui;color:#7859ae}.st-benefits h2{font-size:26px;margin:14px 0}.st-benefits p{font-size:16px;line-height:1.6;color:#64748a}.st-cta{text-align:center;padding:35px 0 70px}.st-cta h2{font-size:clamp(28px,4vw,44px)}.st-cta a{display:inline-block;margin:10px}
@media(max-width:760px){.st-intro{margin:20px auto 40px}.st-intro p{font-size:17px}.st-tour-head{display:block}.st-badge{display:block;margin-top:12px}.st-tour{padding:14px 10px}.st-lid{padding:16px 5px 6px;border-width:2px;border-radius:17px 17px 5px 5px}.st-appbody{display:block}.st-sidebar{flex-direction:row;padding:8px;gap:5px}.st-sidebar button{display:block;flex:1;min-width:0;font-size:10px;padding:8px 4px;text-align:center}.st-sidebar button>span,.st-sidebar small{display:none}.st-appbar{padding:10px;font-size:9px}.st-appbar b{font-size:12px}.st-lesson{padding:15px 10px}.st-lesson h3{font-size:20px;min-height:48px}.st-picture{height:170px;padding:8px}.st-answers button{font-size:11px;min-width:70px;padding:8px}.st-feedback{min-height:120px;font-size:12px}.st-lesson-actions{display:grid;grid-template-columns:1fr 1fr}.st-lesson-actions [data-st-next]{grid-column:1/-1;width:100%;margin:0}.st-controls{gap:7px}.st-controls button{font-size:11px;padding:9px}.st-tour-caption{margin:10px 0 0;max-width:none}.st-benefits{grid-template-columns:1fr;gap:20px;margin-bottom:30px}.st-hint{font-size:11px}.st-base{height:13px}}
.st-page .st-intro{display:block;background:transparent;padding:0;border:0;box-shadow:none}.st-answers{min-height:60px}.st-lesson-meta{min-height:16px}.st-picture .st-count{font:700 23px system-ui;fill:#25365e;paint-order:stroke;stroke:white;stroke-width:5px}
@media(max-width:760px){.st-answers{min-height:106px;align-content:center}.st-question{min-height:48px}.st-intro .button-link{margin-top:12px}}

.st-screen{position:relative}.st-browserbar{display:flex;align-items:center;gap:9px;background:#f1f4f9;border-bottom:1px solid #dce5ef;padding:8px 12px;font:11px system-ui}.st-address{flex:1;min-width:0;padding:8px 12px;border-radius:7px;background:white;color:#61748c;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.st-browserbar button{font-size:11px;padding:7px 10px;min-height:34px}.st-explorer[hidden],.st-appbody[hidden],.st-tour-pointer[hidden]{display:none}.st-explorer{height:650px;overflow:auto;scrollbar-gutter:stable}.st-course-nav{display:flex;gap:7px;padding:12px;flex-wrap:wrap;background:#eaf0f8}.st-course-nav button{font-size:12px}.st-course-nav [aria-pressed=true]{background:#dce6fa;border-color:#5378c3}.st-search-label{display:flex;gap:12px;align-items:center;padding:10px 16px;font:600 12px system-ui}.st-search-label input{min-width:0;flex:1;border:1px solid #d3dfed;border-radius:8px;padding:10px;font:13px system-ui}.st-explorer .vp-page{padding:14px}.st-explorer .vp-hero{display:none}.st-explorer .vp-layout{grid-template-columns:minmax(0,1.25fr) minmax(190px,.8fr);gap:15px}.st-explorer .vp-player{position:sticky;top:10px;padding:16px;border-radius:16px}.st-explorer .vp-player h2{font:700 20px/1.25 system-ui}.st-explorer .vp-scene{min-height:190px;padding:10px}.st-explorer .vp-player>p{font:12px/1.5 system-ui}.st-explorer .vp-group h3{font:700 15px/1.4 system-ui}.st-explorer .vp-group button{font-size:12px;padding:12px}.st-explorer .vp-group button[hidden],.st-explorer .vp-group[hidden]{display:none}.st-explorer .vp-check{font-size:10px}.st-explorer .vp-controls button{font-size:11px;padding:8px}.st-tour-pointer{position:absolute;z-index:5;pointer-events:none;font:800 32px system-ui;color:#293e6b;filter:drop-shadow(0 2px 2px white);transition:left .6s,top .6s}.st-tour-pointer span{display:block;font:600 10px system-ui;background:#293e6b;color:white;padding:6px 9px;border-radius:7px;white-space:nowrap}
@media(max-width:760px){.st-browserbar{flex-wrap:wrap}.st-address{flex-basis:70%}.st-explorer{height:650px}.st-explorer .vp-layout{grid-template-columns:minmax(0,1fr)}.st-explorer .vp-player{position:static}.st-course-nav button{font-size:10px;padding:8px;flex:1}.st-search-label{display:block}.st-search-label input{display:block;width:100%;margin-top:7px}.st-tour-pointer{display:none}.st-explorer .vp-page{padding:8px}.st-explorer .vp-scene{min-height:150px}}

.st-explorer{display:grid;grid-template-rows:auto auto minmax(0,1fr);overflow:hidden}.st-explorer-content{overflow:auto;min-height:0;scrollbar-gutter:stable}