.stm-videos{--video-muted:#9cacc0;--video-teal:#79d4ca;--video-line:#2b3b50;color:#edf3f8;min-width:0;padding-bottom:40px}
.stm-videos *,.stm-videos *::before,.stm-videos *::after{box-sizing:border-box;min-width:0}
.stm-videos h1,.stm-videos h2,.stm-videos h3,.stm-videos h4,.stm-videos p{margin:0}
.stm-videos a,.stm-videos button,.stm-videos input,.stm-videos select{font:inherit}
.stm-videos a,.stm-videos button{-webkit-tap-highlight-color:transparent}
.stm-videos a:focus-visible,.stm-videos button:focus-visible,.stm-videos select:focus-visible,.stm-videos input:focus-visible,.stm-videos summary:focus-visible{outline:3px solid #8bd8cf;outline-offset:4px}
.stm-videos button{cursor:pointer}
.stm-videos button:disabled{cursor:default}
.stm-videos-kicker{display:block;font-size:10px;line-height:1.8;font-weight:750;letter-spacing:1.65px;color:#92b9bb;overflow-wrap:anywhere}
.stm-videos-hero{position:relative;isolation:isolate;display:grid;grid-template-columns:minmax(0,1.1fr) minmax(240px,.9fr);align-items:center;overflow:hidden;border:1px solid #324450;border-radius:24px;background:radial-gradient(ellipse at 88% 30%,#253d5266,transparent 65%),linear-gradient(130deg,#121f2b,#101a29)}
.stm-videos-hero-copy{padding:38px 0 38px 36px;position:relative;z-index:2}
.stm-videos-hero h1{font-size:clamp(32px,4.3vw,51px);font-weight:780;line-height:1.1;letter-spacing:-1.8px;margin:16px 0 20px}
.stm-videos-hero h1 em{font-style:normal;color:#92d8d0}
.stm-videos-hero-copy>p{max-width:445px;color:#acbccb;font-size:14px;line-height:1.85}
.stm-videos-planned{display:flex;flex-wrap:wrap;gap:9px 17px;margin-top:25px;color:#d2dfe5;font-size:11px;line-height:1.7}
.stm-videos-planned span+span{padding-left:17px;border-left:1px solid #4d6068}
.stm-videos-course-art{--video-accent:#7fd6c9;position:relative;isolation:isolate;aspect-ratio:16/10;overflow:hidden;background:radial-gradient(ellipse at 60% 40%,#243c43,#10212c 80%);color:var(--video-accent)}
.stm-videos-art-slice{position:absolute;width:100%;aspect-ratio:1;left:0;top:50%;transform:translateY(-50%);overflow:hidden}
.stm-videos-atlas{display:block;position:absolute;width:300%;height:auto;max-width:none;opacity:.95;transform:scale(1.001);transform-origin:50% 50%}
.stm-videos-art-shade{position:absolute;inset:0;background:linear-gradient(180deg,#07101d08 15%,#0a15213b 65%,#101c2aee)}
.stm-videos-math-art{position:absolute;width:75%;height:auto;left:12.5%;top:8%;opacity:.52;filter:drop-shadow(0 3px 12px #08101c);pointer-events:none}
.stm-videos-math-art text{font:22px Georgia,serif;fill:currentColor;stroke:none;text-anchor:middle}
.stm-videos-art-formula{position:absolute;bottom:15px;left:20px;font:italic 19px Georgia,'Times New Roman',serif;letter-spacing:.8px;line-height:1.5;color:#e0f0ef;opacity:.9;text-shadow:0 2px 9px #07101d}
.stm-videos-art-dot{position:absolute;right:20px;bottom:24px;width:5px;height:5px;background:var(--video-accent);border-radius:50%;box-shadow:0 0 0 5px #79d4ca14}
.stm-videos-hero .stm-videos-course-art{width:100%;height:100%;min-height:285px;aspect-ratio:auto;background:transparent}
.stm-videos-hero .stm-videos-art-shade{background:linear-gradient(90deg,#13202bea,transparent 40%),linear-gradient(0deg,#101b2988,transparent 70%)}
.stm-videos-hero .stm-videos-art-formula{font:12px inherit;letter-spacing:2px;bottom:29px;left:48px}
.stm-videos-hero .stm-videos-math-art{width:75%;left:14%;top:16%;opacity:.28}
.stm-videos-hero .stm-videos-atlas{opacity:.88}
.stm-video-theme-amber{--video-accent:#e6b571}
.stm-video-theme-cobalt{--video-accent:#8eabed}
.stm-video-theme-teal{--video-accent:#7fd6c9}
.stm-video-theme-violet{--video-accent:#c7a7ff}
.stm-video-theme-emerald{--video-accent:#78e0b5}
.stm-video-theme-rose{--video-accent:#f5a3c3}
.stm-video-theme-copper{--video-accent:#ffc49b}
.stm-video-theme-aqua{--video-accent:#8ee6d4}
.stm-video-theme-cyan{--video-accent:#a1e5dd}
.stm-videos-course-art.stm-course-hero-art{aspect-ratio:16/9;background:#100c1d}
.stm-course-hero-poster,.stm-course-hero-video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;display:block}
.stm-course-hero-video{opacity:0;transition:opacity .6s ease;pointer-events:none}
.stm-course-hero-video.is-playing{opacity:1}
.stm-course-hero-shade{position:absolute;inset:0;background:linear-gradient(0deg,#060913b8,transparent 45%);pointer-events:none}
.stm-course-hero-caption{position:absolute;left:18px;top:16px;max-width:47%;font-size:8px;font-weight:750;letter-spacing:1.5px;line-height:1.8;color:#eef2ff}
.stm-course-hero-formula{position:absolute;bottom:15px;left:18px;padding:5px 11px;border-radius:7px;border:1px solid #ffffff24;background:#080c1cb8;backdrop-filter:blur(8px);font:italic 18px/1.4 Georgia,serif;color:#fff;letter-spacing:.5px}
.stm-course-hero-formula math{font-family:"Cambria Math","STIX Two Math",Georgia,serif;max-width:100%}
.stm-videos-course-card[data-video-course-card="calculo-vectorial"] .stm-course-hero-formula{font-size:16px}
.stm-videos-course-card .stm-videos-course-art{--video-accent:inherit}
.stm-videos-access-note{display:flex;align-items:center;gap:12px;padding:17px 0;margin-bottom:19px;color:#9facbd;border-bottom:1px solid #27394a}
.stm-videos-access-note p{font-size:12px;line-height:1.8}
.stm-videos-mini-lock{display:grid;place-items:center;flex-shrink:0;color:#9badaf}
.stm-videos-mini-lock svg{width:19px;height:19px}
.stm-videos-catalog-status{font-size:12px;line-height:1.8;color:#d7b680;margin:0 0 16px!important}
.stm-videos-catalog-status:empty{display:none}
.stm-videos-catalog-status button{border:0;border-bottom:1px solid currentColor;background:none;color:#b4ded8;padding:4px 0;margin-left:8px}
.stm-videos-gallery-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin:9px 0 20px}
.stm-videos-gallery-heading h2{font-size:23px;font-weight:720;letter-spacing:-.6px;line-height:1.4;margin-top:7px}
.stm-videos-course-gallery{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.stm-videos-gallery-heading p{max-width:650px;font-size:12px;line-height:1.9;color:#a7bacb;margin-top:9px}
.stm-videos-independent-group{margin-top:44px;padding-top:30px;border-top:1px solid #354356}
.stm-videos-independent-group .stm-videos-kicker{color:#cbb0eb}
.stm-videos-independent-label{display:inline-block;align-self:flex-start;margin-bottom:12px;padding:4px 8px;border-radius:6px;background:#d0acf014;border:1px solid #c1a2e333;color:#d9c1ed;font-size:9px;line-height:1.7}
.stm-video-theme-plum{--video-accent:#e8a3d7;--subject-base:#1b172c;--subject-surface:#39213e;--subject-accent:#e8a3d7;--subject-edge:#815580}
.stm-video-theme-lime{--video-accent:#c4e89b;--subject-base:#131f20;--subject-surface:#28351e;--subject-accent:#c4e89b;--subject-edge:#647a49}
@media(max-width:520px){.stm-videos-independent-group{margin-top:32px;padding-top:24px}.stm-videos-gallery-heading p{font-size:11px}}

.stm-course-promotion{position:relative;min-width:0;overflow:hidden;border:1px solid #90606f;border-radius:17px;background:#070f1e;box-shadow:0 8px 32px #03081530}
.stm-course-promotion a{position:relative;display:block;overflow:hidden;color:inherit;line-height:0;text-decoration:none!important}
.stm-course-promotion a:focus-visible{outline:3px solid #ffd995;outline-offset:-5px;border-radius:16px}
.stm-course-promotion img{display:block;width:100%;height:auto}
.stm-course-promotion-tile{display:flex;flex-direction:column;justify-content:center;background:radial-gradient(ellipse at 50% 15%,#1e355b,#0b1223 80%);transition:transform .22s ease,border-color .22s ease}
.stm-course-promotion-tile:hover{transform:translateY(-4px);border-color:#f0a3a7}
.stm-course-promotion-tile>p{padding:18px 18px 22px;text-align:center;font-size:12px;line-height:1.9;color:#b9cadd}
.stm-course-promotion-tile>p strong{font-weight:650;color:#f2e3d6}
.stm-course-promotion-glint{position:absolute;inset:-50% -10%;pointer-events:none;background:linear-gradient(110deg,transparent 42%,#b5e8ff20 49%,#fff5 50%,transparent 57%);transform:translateX(-110%);animation:stm-course-promo-glint 10s ease-in-out 3}
.stm-course-promotion a:hover .stm-course-promotion-glint{animation-play-state:paused}
@keyframes stm-course-promo-glint{0%,65%{transform:translateX(-110%)}90%,100%{transform:translateX(110%)}}
@media(max-width:600px){.stm-course-promotion-tile>p{padding:14px 18px 18px}}
@media(prefers-reduced-motion:reduce){.stm-course-promotion,.stm-course-promotion-glint{animation:none!important;transition:none!important}.stm-course-promotion-glint{display:none}}
.stm-videos-course-card{position:relative;border:1px solid #30414f;border-radius:17px;overflow:hidden;background:linear-gradient(145deg,#162331,#101b29);transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease}
.stm-videos-course-card:hover{transform:translateY(-4px);border-color:#587d85;box-shadow:0 13px 30px #050b142b}
.stm-videos-course-card[data-selected=true]{border-color:#79c4be;box-shadow:0 0 0 1px #79c4be22}
.stm-videos-course-link{display:flex;flex-direction:column;height:100%;color:inherit;text-decoration:none!important}
.stm-videos-course-link:focus-visible{outline-offset:-4px!important;border-radius:16px}
.stm-videos-card-body{padding:19px 20px 20px;display:flex;flex-direction:column;flex:1}
.stm-videos-card-topline{display:flex;justify-content:space-between;align-items:center;gap:12px;color:var(--video-accent);font-size:9px;font-weight:750;letter-spacing:1.3px;line-height:1.8}
.stm-videos-card-topline span+span{color:#9eafbf;letter-spacing:0;font-weight:500;font-size:10px}
.stm-videos-card-body h3{font-size:19px;font-weight:730;letter-spacing:-.35px;line-height:1.35;margin:11px 0 10px;overflow-wrap:anywhere}
.stm-videos-card-body>p{font-size:12px;color:#a4b5c4;line-height:1.85;flex:1}
.stm-videos-card-meta{display:flex;flex-wrap:wrap;gap:5px 10px;color:#8fa6b6;font-size:10px;line-height:1.7;margin:18px 0}
.stm-videos-card-meta span+span::before{content:'·';margin-right:10px;color:#687d8e}
.stm-videos-card-cta{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:15px;border-top:1px solid #2c3e4d;color:#cde6e4;font-size:11px;font-weight:700;line-height:1.8}
.stm-videos-card-cta>span{display:grid;place-items:center;width:27px;height:27px;border:1px solid #46606a;border-radius:50%;color:var(--video-accent);font-size:15px}
.stm-videos-workspace{margin-top:34px;padding-top:26px;border-top:1px solid #2b3f50;scroll-margin-top:80px}
.stm-videos-workspace-heading{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:23px}
.stm-videos-back{display:inline-flex;align-items:center;gap:10px;color:#bfd5d8;font-size:12px!important;text-decoration:none}
.stm-videos-back:hover{color:#e4f9f4}
.stm-videos-course-select{display:grid;gap:7px;color:#8fa8b9;font-size:10px;font-weight:650;max-width:380px;width:52%;line-height:1.6}
.stm-videos-course-select select,.stm-videos-topic-select select{width:100%;max-width:100%;min-height:45px;padding:10px 31px 10px 12px;color:#dcebf2;border:1px solid #3a5365;border-radius:9px;background:#142535;font-size:12px;text-overflow:ellipsis}
.stm-videos-course-select option,.stm-videos-topic-select option,.stm-videos-topic-select optgroup{color:#e0edf4;background:#142535}
.stm-videos-layout{display:grid;grid-template-columns:minmax(0,260px) minmax(0,1fr);gap:25px;align-items:start}
.stm-videos-sessions{overflow:hidden;border:1px solid #304454;border-radius:15px;background:#101c2be8}
.stm-videos-sessions-heading{padding:21px 19px;border-bottom:1px solid #2c4052}
.stm-videos-sessions-heading h2{font-size:18px;line-height:1.5;letter-spacing:-.4px;font-weight:730;margin-top:8px}
.stm-videos-sessions-heading p{color:#8ca6b7;font-size:11px;line-height:1.8;margin-top:8px}
.stm-videos-sessions button{display:flex;align-items:center;gap:11px;width:100%;padding:16px 15px;text-align:left;border:0;border-bottom:1px solid #263a4c;background:transparent;color:#bfcedb}
.stm-videos-sessions button:last-child{border-bottom:0}
.stm-videos-sessions button:hover{background:#1b3041}
.stm-videos-sessions button[aria-pressed=true]{background:#203d4799;box-shadow:inset 3px 0 #86cfc4}
.stm-videos-session-number{display:grid;place-items:center;flex-shrink:0;width:30px;height:34px;border:1px solid #3b5667;border-radius:8px;background:#1b3242;color:#9dc7ca;font-size:11px;font-weight:750}
.stm-videos-session-copy{display:grid;gap:5px;flex:1}
.stm-videos-session-copy strong{font-size:12px;font-weight:680;line-height:1.6}
.stm-videos-session-copy small{color:#87a1b5;font-size:10px;line-height:1.55}
.stm-videos-session-lock{flex-shrink:0;color:#85a1ac}
.stm-videos-session-lock svg{width:16px;height:16px;display:block}
.stm-videos-session-detail{display:grid;gap:20px;scroll-margin-top:85px}
.stm-videos-detail-header{padding-top:2px}
.stm-videos-detail-header h2{font-size:25px;line-height:1.4;letter-spacing:-.65px;font-weight:750;margin-top:9px;overflow-wrap:anywhere}
.stm-videos-detail-header p{color:#9aafc0;font-size:12px;line-height:1.8;margin-top:9px}
.stm-videos-session-navigation{display:grid;grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);gap:10px;align-items:center}
.stm-videos-session-navigation button{display:flex;align-items:center;justify-content:center;gap:9px;min-height:43px;border:1px solid #375366;border-radius:9px;padding:9px 12px;background:#152737;color:#bfd2df;font-size:11px;font-weight:650;line-height:1.6}
.stm-videos-session-navigation button:hover:not(:disabled){background:#234151;border-color:#6f9ea8}
.stm-videos-session-navigation button:disabled{background:#101c2a;color:#6f879a;border-color:#283c4c}
.stm-videos-session-navigation>span{color:#99acbe;font-size:10px;line-height:1.7;text-align:center}
.stm-videos-recording{overflow:hidden;border:1px solid #324a5c;border-radius:17px;background:#0c1624}
.stm-videos-recording-state{position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;min-height:300px;padding:30px 24px;text-align:center;background:radial-gradient(ellipse at 50% 20%,#21424a66,transparent 70%),linear-gradient(145deg,#101e2b,#0d1726)}
.stm-videos-recording-state.is-ready{background:radial-gradient(ellipse at 50% 20%,#25545a66,transparent 75%),linear-gradient(145deg,#152a34,#101d2b)}
.stm-videos-preview-symbol,.stm-videos-lock-mark{display:grid;place-items:center;width:53px;height:53px;flex-shrink:0;border:1px solid #4b6a71;border-radius:16px;color:#a7d7d3;background:#223b4477}
.stm-videos-preview-symbol svg,.stm-videos-lock-mark svg{width:25px;height:25px}
.stm-videos-recording-state h3{font-size:22px;letter-spacing:-.45px;line-height:1.4;font-weight:730;color:#dbe9ed}
.stm-videos-recording-state p{max-width:415px;font-size:12px;line-height:1.9;color:#9bb1c2}
.stm-videos-recording-state>.stm-videos-kicker{font-size:9px;margin-top:4px}
.stm-videos-primary,.stm-videos-secondary{display:inline-flex;align-items:center;justify-content:center;gap:9px;min-height:43px;padding:10px 17px;border-radius:9px;font-size:12px!important;font-weight:700!important;line-height:1.65}
.stm-videos-primary{background:#9adbd1;border:1px solid #b7e9de;color:#102d32}
.stm-videos-primary:hover{background:#b9e9df}
.stm-videos-primary svg{width:17px;height:17px}
.stm-videos-secondary{background:#193440;border:1px solid #4c737c;color:#c4e7e5}
.stm-videos-secondary:hover{background:#274b57}
.stm-videos-primary:disabled,.stm-videos-secondary:disabled{opacity:.6}
.stm-videos-access-chip{display:flex;align-items:center;gap:7px;border:1px solid #506164;border-radius:6px;padding:6px 10px;color:#d1c7a4;background:#31393244;font-size:10px;line-height:1.7}
.stm-videos-access-chip svg{width:13px;height:13px}
.stm-videos-pending-note{display:flex;align-items:center;gap:9px;font-size:10px;line-height:1.7;color:#a7bcbf;padding-top:7px}
.stm-videos-duration{font-size:10px;color:#b9ccc9;line-height:1.8}
.stm-videos-player{position:relative;width:100%;aspect-ratio:16/9;background:#050a10}
.stm-videos-player iframe,.stm-videos-player video{display:block;width:100%;height:100%;border:0}
.stm-videos-player-caption{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:11px;padding:16px 18px;background:#142433}
.stm-videos-player-caption>span{font-size:10px;color:#a6b9c8}
.stm-videos-player-caption>a{font-size:11px;color:#b6dfd9;text-decoration:none;border-bottom:1px solid #628e8d;padding:3px 0}
.stm-videos-player-caption p{flex-basis:100%;font-size:10px;color:#92a8b9;line-height:1.8}
.stm-videos-followup{border:1px solid #2d4b58;border-radius:15px;padding:24px;background:linear-gradient(125deg,#18323b66,#132436)}
.stm-videos-followup h3{font-size:21px;font-weight:730;line-height:1.4;letter-spacing:-.4px;color:#d5e9ed;margin-top:8px}
.stm-videos-followup header p{font-size:12px;color:#9bb2c3;line-height:1.9;margin-top:11px}
.stm-videos-module-plan{margin-top:21px;padding:15px;border:1px solid #31515e;border-radius:10px;background:#132d3a66}
.stm-videos-module-plan h4{font-size:11px;color:#b7d0db;font-weight:700;line-height:1.7}
.stm-videos-module-plan ul{display:flex;flex-wrap:wrap;list-style:none;gap:7px;margin:10px 0 0;padding:0}
.stm-videos-module-plan li{display:block;border:1px solid #36596a;border-radius:6px;background:#1a3545;color:#b4cbda;padding:7px 9px;font-size:10px;line-height:1.7;overflow-wrap:anywhere}
.stm-videos-topic-select{display:grid;gap:9px;margin:20px 0;color:#b6d4dd;font-size:11px;font-weight:700;line-height:1.7}
.stm-videos-topic-summary{padding:19px;border:1px solid #3c626c;border-radius:12px;background:linear-gradient(125deg,#1b3842,#182e43)}
.stm-videos-topic-summary h4{font-size:16px;color:#d1e8ee;line-height:1.6;font-weight:700;overflow-wrap:anywhere}
.stm-videos-topic-formula{margin-top:12px!important;padding:12px;border-radius:8px;background:#0f2333;color:#b4dedf;font-size:14px;line-height:1.9;overflow-wrap:anywhere;white-space:normal;overflow-x:auto}
.stm-videos-topic-actions{display:flex;flex-wrap:wrap;gap:9px;margin-top:16px}
.stm-videos-followup a{display:inline-flex;align-items:center;justify-content:space-between;gap:10px;min-height:43px;padding:8px 12px;border:1px solid #426a75;border-radius:7px;background:#1d3c4b88;color:#b0dddd;font-size:11px;font-weight:650;line-height:1.8;text-decoration:none}
.stm-videos-followup a:hover{background:#2b5361;color:#ddf4f1}
.stm-videos-library-link{margin-top:17px}
.stm-videos-homework{margin-top:23px}
.stm-videos-homework h4{margin-top:7px;color:#d2e7ed;font-size:18px;line-height:1.6;font-weight:730}
.stm-videos-homework ol{display:grid;gap:12px;list-style:none;padding:0;margin:19px 0}
.stm-videos-homework li{display:flex;align-items:flex-start;gap:13px;padding:15px;border:1px solid #315061;border-radius:10px;background:#142d3c88}
.stm-videos-homework li>span{display:grid;place-items:center;flex-shrink:0;width:29px;height:29px;color:#94cfce;background:#234450;border:1px solid #416774;border-radius:8px;font-size:10px;font-weight:750}
.stm-videos-homework li>div{display:block}
.stm-videos-homework li strong{display:block;color:#c4dfe8;font-size:12px;line-height:1.7}
.stm-videos-homework li p{color:#9db6c6;font-size:11px;line-height:1.9;margin-top:5px}
.stm-videos-homework li a{margin-top:10px}
.stm-videos-homework-note{color:#8da8bb;font-size:10px;line-height:1.9}
.stm-videos-admin{border:1px solid #4e5149;border-radius:11px;background:#262e3055;overflow:hidden}
.stm-videos-admin summary{padding:15px 17px;color:#d5cbb1;font-size:11px;line-height:1.8;cursor:pointer}
.stm-videos-admin summary>span{float:right}
.stm-videos-admin form{display:grid;gap:15px;padding:0 17px 17px}
.stm-videos-admin form>p{font-size:11px;color:#b1bab6;line-height:1.8}
.stm-videos-admin label{display:grid;gap:8px;font-size:11px;color:#d4d8cf;line-height:1.7}
.stm-videos-admin label span{color:#9baaa7}
.stm-videos-admin input{width:100%;min-height:44px;padding:11px 12px;border:1px solid #4b625f;border-radius:8px;background:#101f28;color:#dce8e5;font-size:12px}
.stm-videos-admin input::placeholder{color:#7e939b}
.stm-videos-admin-status:empty{display:none}
.stm-videos-admin form>button{justify-self:start}
.stm-videos-empty{padding:24px;color:#a6b8c9;font-size:13px;border:1px solid #324b5e;border-radius:13px;background:#132334;line-height:1.9}
.stm-videos-loading-orbit{display:block;width:30px;height:30px;border:2px solid #37575d;border-top-color:#a2d5cc;border-radius:50%;animation:stm-video-spin 1.2s linear infinite}
.stm-video-art-float{transform-origin:center;animation:stm-video-float 7s ease-in-out infinite}
.stm-video-art-drift{transform-origin:center;animation:stm-video-float 9s ease-in-out -2s infinite reverse}
.stm-video-art-orbit{transform-origin:160px 100px;animation:stm-video-spin 24s linear infinite}
.stm-video-art-draw{stroke-dasharray:500;stroke-dashoffset:0;animation:stm-video-draw 9s ease-in-out infinite}
.stm-video-art-bars{transform-origin:160px 151px;animation:stm-video-bars 7s ease-in-out infinite}
.stm-videos-course-card:nth-child(2n) .stm-video-art-float{animation-delay:-2.7s}
.stm-videos-course-card:nth-child(3n) .stm-video-art-draw{animation-delay:-4s}
@keyframes stm-video-float{0%,100%{transform:translateY(0)}50%{transform:translateY(-5px)}}
@keyframes stm-video-spin{to{transform:rotate(360deg)}}
@keyframes stm-video-draw{0%,100%{stroke-dashoffset:0;opacity:.85}50%{stroke-dashoffset:45;opacity:.55}}
@keyframes stm-video-bars{0%,100%{transform:scaleY(1)}50%{transform:scaleY(.91)}}
.stm-videos.is-hidden *,body.motion-paused .stm-videos *{animation-play-state:paused!important;transition:none!important}
@media(prefers-reduced-motion:reduce){.stm-videos *{animation:none!important;transition:none!important}.stm-videos-course-card:hover{transform:none}}
@media(min-width:1500px){.stm-videos-course-gallery{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media(max-width:1100px){.stm-videos-course-gallery{grid-template-columns:repeat(2,minmax(0,1fr))}.stm-videos-layout{grid-template-columns:minmax(0,225px) minmax(0,1fr);gap:19px}.stm-videos-sessions button{padding:15px 12px;gap:9px}.stm-videos-hero-copy{padding:30px 0 30px 28px}.stm-videos-hero h1{font-size:37px}.stm-videos-card-body{padding:18px}}
@media(max-width:760px){.stm-videos-layout{grid-template-columns:minmax(0,1fr);gap:25px}.stm-videos-sessions{display:grid;grid-template-columns:repeat(2,minmax(0,1fr))}.stm-videos-sessions-heading{grid-column:1/-1}.stm-videos-sessions button{border-right:1px solid #2c4051;padding:14px 13px}.stm-videos-sessions button:nth-child(odd){border-right:0}.stm-videos-sessions button:nth-last-child(-n+2){border-bottom:0}.stm-videos-hero{grid-template-columns:minmax(0,1.2fr) minmax(0,.8fr)}.stm-videos-hero-copy{padding:27px 0 27px 23px}.stm-videos-hero h1{font-size:32px;letter-spacing:-1.2px}.stm-videos-hero-copy>p{font-size:12px}.stm-videos-hero .stm-videos-course-art{min-height:300px}.stm-videos-hero .stm-videos-art-formula{display:none}.stm-videos-hero .stm-videos-math-art{width:100%;left:0;top:28%}.stm-videos-hero .stm-videos-art-slice{width:160%;left:-30%}.stm-videos-gallery-heading{align-items:flex-start}.stm-videos-gallery-heading h2{font-size:21px}.stm-videos-motion{font-size:9px!important;padding:8px}.stm-videos-card-body h3{font-size:18px}.stm-videos-course-gallery{gap:15px}.stm-videos-card-meta{display:grid;gap:4px}.stm-videos-card-meta span+span::before{content:none}}
@media(max-width:520px){.stm-videos-hero{grid-template-columns:minmax(0,1fr);border-radius:18px;min-height:342px}.stm-videos-hero-copy{padding:28px 24px;max-width:100%}.stm-videos-hero h1{font-size:35px;margin:14px 0 17px;max-width:290px}.stm-videos-hero-copy>p{max-width:245px}.stm-videos-hero .stm-videos-course-art{position:absolute;right:-40px;bottom:-70px;width:58%;height:230px;min-height:0;opacity:.27;z-index:-1}.stm-videos-hero .stm-videos-art-shade{background:linear-gradient(90deg,#14212b,transparent)}.stm-videos-hero .stm-videos-art-slice{width:130%;left:0}.stm-videos-hero .stm-videos-math-art{display:none}.stm-videos-planned{font-size:10px;gap:8px 12px}.stm-videos-planned span+span{padding-left:12px}.stm-videos-gallery-heading{display:grid;grid-template-columns:minmax(0,1fr);gap:13px;margin-top:7px}.stm-videos-motion{justify-self:start;min-height:38px;font-size:10px!important;padding:7px 10px}.stm-videos-course-gallery{grid-template-columns:minmax(0,1fr);gap:19px}.stm-videos-course-art{aspect-ratio:16/9}.stm-videos-card-body{padding:21px}.stm-videos-card-body h3{font-size:22px}.stm-videos-card-body>p{font-size:12px}.stm-videos-card-meta{display:flex;gap:9px;font-size:10px}.stm-videos-card-meta span+span::before{content:'·';margin-right:9px}.stm-videos-workspace-heading{display:grid;gap:18px}.stm-videos-course-select{width:100%;max-width:100%;font-size:11px}.stm-videos-sessions{grid-template-columns:minmax(0,1fr)}.stm-videos-sessions button{border-right:0;padding:13px 16px}.stm-videos-sessions button:nth-last-child(2){border-bottom:1px solid #2c4051}.stm-videos-session-copy strong{font-size:13px}.stm-videos-session-copy small{font-size:11px}.stm-videos-detail-header h2{font-size:23px}.stm-videos-session-navigation{gap:6px}.stm-videos-session-navigation button{gap:5px;padding:9px 7px;font-size:11px}.stm-videos-session-navigation>span{font-size:10px}.stm-videos-recording-state{padding:28px 21px;min-height:315px}.stm-videos-recording-state h3{font-size:22px}.stm-videos-followup{padding:19px}.stm-videos-topic-summary{padding:15px}.stm-videos-topic-actions{display:grid;grid-template-columns:minmax(0,1fr)}.stm-videos-homework li{padding:13px;gap:10px}.stm-videos-player-caption{padding:15px}.stm-videos-admin form>button{justify-self:stretch}}