/* Bright Apple-inspired learning surfaces shared by knowledge.html and virtual-lab.html. */
:root{
  color-scheme:light;
  --learn-bg:#e6edf3;
  --learn-surface:rgba(243,247,250,.84);
  --learn-surface-solid:#f8fafc;
  --learn-surface-soft:#eaf0f5;
  --learn-ink:#111827;
  --learn-muted:#667085;
  --learn-faint:#94a3b8;
  --learn-line:rgba(15,23,42,.10);
  --learn-line-strong:rgba(15,23,42,.16);
  --learn-blue:#0878f9;
  --learn-blue-dark:#005ed7;
  --learn-cyan:#20b8d4;
  --learn-green:#16a47c;
  --learn-gold:#b56c16;
  --learn-red:#d9423a;
  --learn-shadow:0 18px 50px rgba(43,62,91,.10),0 2px 8px rgba(43,62,91,.05);
  --learn-shadow-hover:0 24px 62px rgba(43,62,91,.16),0 4px 12px rgba(43,62,91,.07);
  --learn-radius:24px;
  --learn-radius-sm:16px;
  font-family:-apple-system,BlinkMacSystemFont,"SF Pro Display","SF Pro Text","PingFang SC","Helvetica Neue",Arial,sans-serif;
}

html{background:var(--learn-bg);scroll-behavior:smooth}
body.learning-shell{
  min-height:100vh;
  margin:0;
  color:var(--learn-ink);
  background:
    radial-gradient(circle at 82% -8%,rgba(68,150,224,.23),transparent 31rem),
    radial-gradient(circle at 8% 18%,rgba(92,190,188,.15),transparent 28rem),
    linear-gradient(180deg,#eef3f7 0,#e5ecf2 38%,#dce6ee 100%);
  font-family:-apple-system,BlinkMacSystemFont,"SF Pro Display","SF Pro Text","PingFang SC","Helvetica Neue",Arial,sans-serif;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
body.learning-shell::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:-1;
  pointer-events:none;
  background:linear-gradient(rgba(255,255,255,.12),rgba(255,255,255,0) 18rem);
}
body.learning-shell,*{box-sizing:border-box}
body.learning-shell a{color:inherit;text-decoration:none}
body.learning-shell button,
body.learning-shell input,
body.learning-shell select,
body.learning-shell textarea{font:inherit}
body.learning-shell button,
body.learning-shell a,
body.learning-shell input,
body.learning-shell select{touch-action:manipulation}
body.learning-shell [hidden]{display:none!important}
body.learning-shell ::selection{background:rgba(8,120,249,.18);color:var(--learn-ink)}
body.learning-shell :focus-visible{
  outline:3px solid rgba(8,120,249,.52)!important;
  outline-offset:3px;
}

body.learning-shell>header{
  position:sticky;
  top:0;
  z-index:80;
  min-height:72px;
  height:auto;
  padding:12px clamp(18px,3.2vw,54px);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:22px;
  color:var(--learn-ink);
  border:0;
  border-bottom:1px solid rgba(255,255,255,.72);
  background:rgba(238,243,247,.78);
  box-shadow:0 1px 0 rgba(15,23,42,.06),0 8px 30px rgba(49,70,103,.045);
  -webkit-backdrop-filter:saturate(160%) blur(24px);
  backdrop-filter:saturate(160%) blur(24px);
}
body.learning-shell .brand{
  flex:0 0 auto;
  color:var(--learn-ink);
  font-size:20px;
  line-height:1.1;
  font-weight:720;
  letter-spacing:-.03em;
}
body.learning-shell .brand span,
body.learning-shell .brand small{
  display:block;
  margin-top:6px;
  color:#748197;
  font-size:9px;
  line-height:1.2;
  font-weight:650;
  letter-spacing:.16em;
}
body.learning-shell>header nav{
  display:flex;
  align-items:center;
  justify-content:flex-end;
  flex-wrap:wrap;
  gap:5px;
  color:#526176;
  font-size:12px;
}
body.learning-shell>header nav>a,
body.learning-shell>header nav>button{
  min-height:36px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:8px 13px;
  color:#526176;
  border:1px solid transparent;
  border-radius:999px;
  background:transparent;
  box-shadow:none;
  transition:color .2s ease,background .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
body.learning-shell>header nav>a:hover,
body.learning-shell>header nav>button:hover:not(:disabled){
  color:var(--learn-blue-dark);
  border-color:rgba(8,120,249,.12);
  background:rgba(8,120,249,.07);
  transform:translateY(-1px);
}
body.learning-shell>header nav>[aria-current="page"],
body.learning-shell>header nav>button[aria-pressed="true"]{
  color:#fff;
  border-color:rgba(8,120,249,.24);
  background:linear-gradient(180deg,#188aff,#0878f9);
  box-shadow:0 5px 14px rgba(8,120,249,.24),inset 0 1px rgba(255,255,255,.30);
}
body.learning-shell .platform-access{
  gap:5px;
  padding-left:8px;
  color:#66758b;
  font-size:11px;
}
body.learning-shell .platform-access .platform-account-state{color:#768398;opacity:1}
body.learning-shell .platform-access a,
body.learning-shell .platform-access button{
  min-height:32px;
  padding:5px 10px;
  color:#526176;
  border:1px solid var(--learn-line);
  border-radius:999px;
  background:rgba(255,255,255,.78);
  box-shadow:0 2px 6px rgba(35,54,82,.05);
}

body.learning-shell button{
  color:#26364b;
  border:1px solid var(--learn-line);
  border-radius:12px;
  background:rgba(255,255,255,.88);
  box-shadow:0 1px 2px rgba(29,45,69,.04);
  cursor:pointer;
  transition:color .18s ease,background .18s ease,border-color .18s ease,box-shadow .2s ease,transform .2s ease;
}
body.learning-shell button:hover:not(:disabled){
  color:var(--learn-blue-dark);
  border-color:rgba(8,120,249,.24);
  background:#fff;
  box-shadow:0 8px 22px rgba(37,70,119,.10);
  transform:translateY(-1px);
}
body.learning-shell button:active:not(:disabled){transform:scale(.985)}
body.learning-shell button:disabled{cursor:not-allowed;opacity:.42;box-shadow:none}
body.learning-shell input,
body.learning-shell select,
body.learning-shell textarea{
  color:var(--learn-ink);
  border:1px solid var(--learn-line-strong);
  border-radius:12px;
  background:rgba(255,255,255,.88);
  box-shadow:inset 0 1px 2px rgba(23,38,61,.025),0 1px 0 rgba(255,255,255,.8);
}
body.learning-shell input:hover,
body.learning-shell select:hover,
body.learning-shell textarea:hover{border-color:rgba(8,120,249,.30)}
body.learning-shell input:focus,
body.learning-shell select:focus,
body.learning-shell textarea:focus{
  border-color:rgba(8,120,249,.56);
  box-shadow:0 0 0 4px rgba(8,120,249,.10);
}
body.learning-shell input::placeholder,
body.learning-shell textarea::placeholder{color:#9aa6b7}
body.learning-shell input[type="checkbox"],
body.learning-shell input[type="radio"]{accent-color:var(--learn-blue)}
body.learning-shell input[type="range"]{
  height:22px;
  padding:0;
  border:0;
  border-radius:0;
  background:transparent;
  box-shadow:none;
  accent-color:var(--learn-blue);
}
body.learning-shell input[type="range"]::-webkit-slider-runnable-track{
  height:5px;
  border-radius:99px;
  background:linear-gradient(90deg,rgba(8,120,249,.28),rgba(8,120,249,.10));
}
body.learning-shell input[type="range"]::-webkit-slider-thumb{
  width:19px;
  height:19px;
  margin-top:-7px;
  border:4px solid #fff;
  border-radius:50%;
  background:var(--learn-blue);
  box-shadow:0 2px 8px rgba(8,80,170,.30);
  -webkit-appearance:none;
}
body.learning-shell .eyebrow{
  color:var(--learn-blue);
  font-size:10px;
  line-height:1.55;
  font-weight:700;
  letter-spacing:.13em;
}
body.learning-shell p{color:var(--learn-muted)}
body.learning-shell .skip{
  position:fixed;
  top:-80px;
  left:18px;
  z-index:200;
  padding:10px 16px;
  color:#fff;
  border-radius:12px;
  background:var(--learn-blue);
  box-shadow:0 10px 30px rgba(8,120,249,.24);
}
body.learning-shell .skip:focus{top:12px}

/* Knowledge base */
body.knowledge-page>main{
  max-width:1720px;
  margin:0 auto;
  padding:0 clamp(18px,3.4vw,58px) 34px;
}
body.knowledge-page .hero{
  min-height:210px;
  padding:50px 0 30px;
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:32px;
}
body.knowledge-page .hero h1{
  max-width:850px;
  margin:12px 0 14px;
  color:var(--learn-ink);
  font-size:clamp(34px,4vw,66px);
  line-height:1.06;
  font-weight:720;
  letter-spacing:-.055em;
}
body.knowledge-page .hero p{margin:0;color:#68768a;font-size:15px;line-height:1.7}
body.knowledge-page .stats{
  display:flex;
  flex:0 0 auto;
  gap:8px;
  padding:8px;
  border:1px solid rgba(255,255,255,.9);
  border-radius:20px;
  background:rgba(239,244,248,.74);
  box-shadow:0 10px 32px rgba(43,62,91,.07);
  -webkit-backdrop-filter:blur(18px);
  backdrop-filter:blur(18px);
}
body.knowledge-page .stats span{
  min-width:104px;
  padding:13px 15px;
  display:flex;
  flex-direction:column;
  gap:5px;
  color:#78869a;
  font-size:10px;
}
body.knowledge-page .stats b{
  color:var(--learn-ink);
  font:650 27px/1 ui-monospace,"SFMono-Regular",monospace;
  letter-spacing:-.04em;
}
body.knowledge-page>.learning-path,
body.knowledge-page main>.learning-path{
  margin:0 0 24px;
  padding:8px;
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:6px;
  color:#657388;
  border:1px solid rgba(255,255,255,.9);
  border-radius:18px;
  background:rgba(237,243,248,.74);
  box-shadow:0 8px 30px rgba(43,62,91,.06);
  -webkit-backdrop-filter:blur(18px);
  backdrop-filter:blur(18px);
}
body.knowledge-page .learning-path span{
  min-height:38px;
  display:flex;
  align-items:center;
  justify-content:center;
  color:#58677c;
  border-radius:12px;
  background:rgba(247,249,252,.78);
  font-size:11px;
  font-weight:620;
  letter-spacing:.02em;
}
body.knowledge-page .learning-path i{display:none}
body.knowledge-page .courses{display:grid;grid-template-columns:1fr 1fr;gap:16px}
body.knowledge-page .course-card{
  position:relative;
  min-height:190px;
  padding:25px 27px;
  overflow:hidden;
  isolation:isolate;
  text-align:left;
  color:var(--learn-ink);
  border:1px solid rgba(255,255,255,.92);
  border-radius:var(--learn-radius);
  background:linear-gradient(112deg,rgba(248,250,252,.97) 0,rgba(244,248,251,.94) 48%,rgba(222,233,242,.82) 100%);
  box-shadow:var(--learn-shadow);
}
body.knowledge-page .course-card::after{
  content:"";
  position:absolute;
  inset:0;
  z-index:-1;
  background:linear-gradient(90deg,#f7fafc 19%,rgba(244,248,251,.9) 54%,rgba(244,248,251,.08));
}
body.knowledge-page .course-card img{
  position:absolute;
  inset:0 0 0 auto;
  z-index:-2;
  width:55%;
  height:100%;
  object-fit:cover;
  opacity:.82;
  filter:saturate(.84) contrast(1.04);
  -webkit-mask-image:linear-gradient(90deg,transparent 0,#000 48%);
  mask-image:linear-gradient(90deg,transparent 0,#000 48%);
  transition:transform .55s cubic-bezier(.22,1,.36,1),filter .3s ease;
}
body.knowledge-page .course-card:hover img{transform:scale(1.035);filter:saturate(1) contrast(1.05)}
body.knowledge-page .course-card[aria-pressed="true"]{
  border-color:rgba(8,120,249,.42);
  background:#fff;
  box-shadow:0 22px 58px rgba(8,90,190,.16),0 0 0 3px rgba(8,120,249,.09);
}
body.knowledge-page .course-card[aria-pressed="true"]::before{
  content:"";
  position:absolute;
  left:0;
  top:24px;
  bottom:24px;
  width:4px;
  border-radius:0 4px 4px 0;
  background:linear-gradient(#2ea3ff,#0071e3);
}
body.knowledge-page .course-card strong{
  max-width:63%;
  display:block;
  margin:12px 0 10px;
  color:var(--learn-ink);
  font-size:clamp(18px,1.5vw,24px);
  line-height:1.25;
  font-weight:680;
  letter-spacing:-.025em;
}
body.knowledge-page .course-card small{max-width:62%;display:block;color:#6d7a8e;line-height:1.55}
body.knowledge-page .course-card .tag{color:var(--learn-blue);font-size:9px;font-weight:720;letter-spacing:.14em}
body.knowledge-page .course-card .course-no{color:rgba(8,120,249,.48);font:600 20px ui-monospace,monospace}
body.knowledge-page .searchbar{
  position:relative;
  margin:20px 0;
  padding:10px 12px 10px 17px;
  display:flex;
  align-items:center;
  gap:10px;
  border:1px solid var(--learn-line);
  border-radius:18px;
  background:rgba(237,243,248,.78);
  box-shadow:0 8px 26px rgba(43,62,91,.06);
  -webkit-backdrop-filter:blur(16px);
  backdrop-filter:blur(16px);
}
body.knowledge-page .searchbar label{color:#68768a;font-size:11px;font-weight:650;white-space:nowrap}
body.knowledge-page input[type="search"]{
  max-width:none;
  min-width:120px;
  flex:1;
  padding:11px 14px 11px 38px;
  color:var(--learn-ink);
  border-color:rgba(15,23,42,.08);
  border-radius:13px;
  background-color:#f5f7fa;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='18' height='18' fill='none'%3E%3Ccircle cx='8' cy='8' r='5.25' stroke='%23718196' stroke-width='1.5'/%3E%3Cpath d='m12 12 4 4' stroke='%23718196' stroke-width='1.5' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat:no-repeat;
  background-position:13px 50%;
}
body.knowledge-page .searchbar button{padding:9px 13px}
body.knowledge-page .searchbar span{color:#7b8798;font-size:11px;white-space:nowrap}
body.knowledge-page #results{
  margin:0 0 20px;
  padding:20px;
  color:var(--learn-ink);
  border:1px solid rgba(8,120,249,.16);
  border-radius:var(--learn-radius-sm);
  background:rgba(245,248,251,.88);
  box-shadow:var(--learn-shadow);
}
body.knowledge-page #results h2{margin:0 0 12px;font-size:15px}
body.knowledge-page .result-link{padding:14px 12px;display:block;border-top:1px solid var(--learn-line);border-radius:10px}
body.knowledge-page .result-link:hover{background:rgba(8,120,249,.055)}
body.knowledge-page .result-link strong{color:var(--learn-blue-dark)}
body.knowledge-page .result-link small{color:#7c899b}
body.knowledge-page .result-link p{color:#637186}
body.knowledge-page .workspace{
  padding:0;
  display:grid;
  grid-template-columns:230px minmax(0,1fr) 260px;
  gap:16px;
  border:0;
  align-items:start;
}
body.knowledge-page .contents,
body.knowledge-page #reader,
body.knowledge-page .related{
  border:1px solid var(--learn-line);
  border-radius:var(--learn-radius);
  background:var(--learn-surface);
  box-shadow:var(--learn-shadow);
  -webkit-backdrop-filter:blur(18px);
  backdrop-filter:blur(18px);
}
body.knowledge-page .contents{
  position:sticky;
  top:90px;
  max-height:calc(100vh - 108px);
  padding:20px 13px 18px;
  overflow:auto;
  scrollbar-width:thin;
  scrollbar-color:#c8d3df transparent;
}
body.knowledge-page .contents .eyebrow,
body.knowledge-page .contents h2{margin-left:9px;margin-right:9px}
body.knowledge-page .contents h2{margin-top:8px;color:var(--learn-ink);font-size:14px;font-weight:670}
body.knowledge-page .outline-link{
  margin:2px 0;
  padding:10px 11px;
  display:block;
  color:#657388;
  border:0;
  border-radius:10px;
  font-size:11px;
  line-height:1.5;
  transition:color .18s ease,background .18s ease,transform .18s ease;
}
body.knowledge-page .outline-link:hover{color:var(--learn-blue-dark);background:rgba(8,120,249,.06);transform:translateX(2px)}
body.knowledge-page .outline-link[aria-current]{
  color:#005dc9;
  border:0;
  background:linear-gradient(135deg,rgba(8,120,249,.13),rgba(40,184,212,.08));
  box-shadow:inset 0 0 0 1px rgba(8,120,249,.11);
  font-weight:650;
}
body.knowledge-page .outline-group{padding:17px 11px 7px;color:#9aa6b7;font-size:9px;font-weight:700;letter-spacing:.11em}
body.knowledge-page .progress{margin:20px 10px 2px}
body.knowledge-page .progress label{color:#6d7a8e}
body.knowledge-page progress{height:7px;accent-color:var(--learn-blue)}
body.knowledge-page progress::-webkit-progress-bar{border-radius:99px;background:#e5ebf2}
body.knowledge-page progress::-webkit-progress-value{border-radius:99px;background:linear-gradient(90deg,#1d8cff,#20b8d4)}
body.knowledge-page .progress small{color:#8b98aa}
body.knowledge-page #reader{
  min-height:650px;
  padding:clamp(26px,3.2vw,48px);
}
body.knowledge-page article h2{
  max-width:820px;
  margin:10px 0 18px;
  color:var(--learn-ink);
  font-size:clamp(27px,2.4vw,42px);
  line-height:1.16;
  font-weight:720;
  letter-spacing:-.045em;
}
body.knowledge-page article h3{margin:31px 0 13px;color:#1b293c;font-size:16px;font-weight:690}
body.knowledge-page article h4{margin:0;color:#24344a;font-size:14px}
body.knowledge-page article p,
body.knowledge-page article ul,
body.knowledge-page article ol{color:#536176;font-size:14px;line-height:1.9}
body.knowledge-page article .lead{color:#34445a;font-size:16px;line-height:1.8}
body.knowledge-page .chips{gap:7px;margin:18px 0 24px}
body.knowledge-page .chips span{
  padding:6px 10px;
  color:#1769b9;
  border:1px solid rgba(8,120,249,.13);
  border-radius:999px;
  background:rgba(8,120,249,.065);
  font-size:10px;
  font-weight:620;
}
body.knowledge-page .formula{
  margin:22px 0;
  padding:20px 22px;
  border:1px solid rgba(8,120,249,.12);
  border-left:4px solid var(--learn-blue);
  border-radius:14px;
  background:linear-gradient(135deg,#f1f7ff,#f8fbff);
}
body.knowledge-page .formula code{color:#075eb9;font-size:15px}
body.knowledge-page .formula p{color:#63738a;font-size:12px}
body.knowledge-page .scope{
  margin:22px 0;
  padding:17px 19px;
  border:1px solid rgba(181,108,22,.15);
  border-left:4px solid #d89338;
  border-radius:14px;
  background:#fff9ef;
}
body.knowledge-page .scope p{margin:0;color:#76552d}
body.knowledge-page .case{
  margin:20px 0;
  padding:19px 20px;
  border:1px solid var(--learn-line);
  border-radius:16px;
  background:#f8fafc;
  box-shadow:none;
}
body.knowledge-page .case h3{margin:0 0 9px;color:#85520f}
body.knowledge-page .portal-link{
  position:relative;
  margin:14px 0;
  padding:16px 18px;
  display:block;
  overflow:hidden;
  color:#fff;
  border:0;
  border-radius:16px;
  background:linear-gradient(110deg,#0878f9,#12a8d4);
  box-shadow:0 12px 28px rgba(8,120,249,.20),inset 0 1px rgba(255,255,255,.25);
  font-size:13px;
  font-weight:680;
  transition:transform .2s ease,box-shadow .2s ease;
}
body.knowledge-page .portal-link::after{
  content:"";
  position:absolute;
  inset:-60% auto -60% -35%;
  width:34%;
  transform:skewX(-20deg);
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.28),transparent);
  transition:left .55s ease;
}
body.knowledge-page .portal-link:hover{color:#fff;transform:translateY(-2px);box-shadow:0 17px 38px rgba(8,120,249,.27)}
body.knowledge-page .portal-link:hover::after{left:115%}
body.knowledge-page .portal-link span{margin-top:6px;display:block;color:rgba(255,255,255,.78);font-size:10px;font-weight:480}
body.knowledge-page .course-joint{background:linear-gradient(110deg,#162a5a,#5865da 54%,#8b6fdc)}
body.knowledge-page .related{
  position:sticky;
  top:90px;
  max-height:calc(100vh - 108px);
  padding:20px 16px;
  overflow:auto;
  scrollbar-width:thin;
  scrollbar-color:#c8d3df transparent;
}
body.knowledge-page .related h2{margin:0 4px 15px;color:var(--learn-ink);font-size:14px;font-weight:680}
body.knowledge-page .related>.portal-link{margin:0 0 14px;padding:13px 14px;border-radius:13px}
body.knowledge-page .model-card{
  margin-bottom:13px;
  overflow:hidden;
  border:1px solid var(--learn-line);
  border-radius:15px;
  background:#f6f9fb;
  box-shadow:0 5px 16px rgba(41,58,84,.06);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
body.knowledge-page .model-card:hover{transform:translateY(-2px);border-color:rgba(8,120,249,.20);box-shadow:0 12px 26px rgba(41,58,84,.11)}
body.knowledge-page .model-card img{width:100%;height:125px;display:block;object-fit:cover;background:#edf2f7;filter:saturate(.92)}
body.knowledge-page .model-card>div{padding:12px}
body.knowledge-page .model-card strong{color:#26354a;font-size:12px}
body.knowledge-page .model-card small{color:#8190a2;font-size:9px}
body.knowledge-page .model-links{gap:8px;padding-top:9px!important}
body.knowledge-page .model-links a{color:#066dd8;font-size:10px;font-weight:650}
body.knowledge-page .guided-part-link{color:#0878f9!important;border-bottom-color:rgba(8,120,249,.28)}
body.knowledge-page .related .note{color:#8390a2;font-size:10px}
body.knowledge-page details{padding:16px 0;border-top:1px solid var(--learn-line)}
body.knowledge-page summary{color:#6b788b;font-size:12px}
body.knowledge-page .references a{color:#075fbf;text-decoration-color:rgba(7,95,191,.28)}
body.knowledge-page .references small{color:#8190a2}
body.knowledge-page .quiz{
  margin:28px 0;
  padding:22px;
  color:var(--learn-ink);
  border:1px solid rgba(8,120,249,.16);
  border-radius:18px;
  background:linear-gradient(145deg,#f8fbff,#f3f8ff);
}
body.knowledge-page .quiz label{margin:5px 0;color:#48576b;border-radius:11px}
body.knowledge-page .quiz label:hover{background:#fff}
body.knowledge-page .quiz label:has(input:checked){color:#0c5cab;border-color:rgba(8,120,249,.18);background:rgba(8,120,249,.08)}
body.knowledge-page .quiz button{color:#fff;border-color:var(--learn-blue);background:var(--learn-blue);box-shadow:0 8px 18px rgba(8,120,249,.18)}
body.knowledge-page .completion{padding-top:20px;border-top:1px solid var(--learn-line);color:#66758a}
body.knowledge-page .completion a{color:var(--learn-blue-dark);font-weight:650}
body.knowledge-page footer{margin-top:26px;padding:24px 4px;color:#8692a3;border-top:1px solid var(--learn-line)}
body.knowledge-page footer a{color:#57667b}
body.knowledge-page #load-error{
  margin-top:30px;
  padding:30px;
  border:1px solid rgba(181,108,22,.24);
  border-radius:20px;
  background:#fff9ef;
}

/* Virtual lab */
body.lab-page .coursebar{
  position:sticky;
  top:72px;
  z-index:65;
  min-height:62px;
  padding:10px clamp(18px,3.2vw,54px);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  color:var(--learn-ink);
  border:0;
  border-bottom:1px solid rgba(15,23,42,.06);
  background:rgba(245,248,252,.78);
  box-shadow:0 6px 22px rgba(42,61,91,.035);
  -webkit-backdrop-filter:saturate(150%) blur(22px);
  backdrop-filter:saturate(150%) blur(22px);
}
body.lab-page .course-tabs{
  padding:4px;
  display:flex;
  gap:4px;
  border:1px solid rgba(15,23,42,.08);
  border-radius:14px;
  background:rgba(222,229,238,.58);
}
body.lab-page .course-tabs button{
  min-height:38px;
  padding:9px 15px;
  color:#69778a;
  border:0;
  border-radius:10px;
  background:transparent;
  box-shadow:none;
}
body.lab-page .course-tabs button:hover{background:rgba(255,255,255,.62)}
body.lab-page .course-tabs [aria-pressed="true"]{
  color:#162235;
  border:0;
  background:#fff;
  box-shadow:0 2px 7px rgba(33,51,78,.13),inset 0 0 0 1px rgba(255,255,255,.7);
  font-weight:650;
}
body.lab-page .lab-badge{color:#6e7c90;font-size:10px;font-weight:580}
body.lab-page .lab-badge i{width:7px;height:7px;background:var(--learn-green);box-shadow:0 0 0 5px rgba(22,164,124,.10)}
body.lab-page .lab-layout{
  max-width:2300px;
  margin:0 auto;
  padding:18px clamp(12px,1.6vw,28px) 32px;
  display:grid;
  grid-template-columns:230px minmax(0,1fr) 300px;
  gap:16px;
  align-items:start;
}
body.lab-page .experiment-nav,
body.lab-page .control-panel{
  position:sticky;
  top:152px;
  align-self:start;
  max-height:calc(100vh - 170px);
  padding:22px 18px;
  overflow:auto;
  color:var(--learn-ink);
  border:1px solid rgba(255,255,255,.94);
  border-radius:22px;
  background:rgba(255,255,255,.78);
  box-shadow:var(--learn-shadow);
  -webkit-backdrop-filter:blur(20px);
  backdrop-filter:blur(20px);
  scrollbar-width:thin;
  scrollbar-color:#c8d3df transparent;
}
body.lab-page .experiment-nav{border-right:1px solid rgba(255,255,255,.94)}
body.lab-page .control-panel{border-left:1px solid rgba(255,255,255,.94)}
body.lab-page .experiment-nav h1,
body.lab-page .control-panel h2{margin:9px 0 20px;color:var(--learn-ink);font-size:18px;font-weight:690;letter-spacing:-.02em}
body.lab-page .experiment-nav nav button{
  width:100%;
  margin:0 0 6px;
  padding:11px 12px;
  display:block;
  color:#637186;
  text-align:left;
  line-height:1.45;
  border:0;
  border-radius:12px;
  background:transparent;
  box-shadow:none;
}
body.lab-page .experiment-nav nav button strong{color:#425168;font-size:12px;font-weight:630}
body.lab-page .experiment-nav nav button small{color:#91a0b2;font-size:9px}
body.lab-page .experiment-nav nav button:hover{background:rgba(8,120,249,.06);transform:translateX(2px)}
body.lab-page .experiment-nav nav [aria-current="true"]{
  color:#075fbf;
  border:0;
  background:linear-gradient(135deg,rgba(8,120,249,.13),rgba(32,184,212,.075));
  box-shadow:inset 0 0 0 1px rgba(8,120,249,.10);
}
body.lab-page .experiment-nav nav [aria-current="true"] strong{color:#075fbf}
body.lab-page .nav-help{
  margin-top:22px;
  padding-top:19px;
  color:#7c899b;
  border-top:1px solid var(--learn-line);
  font-size:10px;
}
body.lab-page .nav-help strong{color:#4d5c70;font-weight:650}
body.lab-page .text-link{color:var(--learn-blue-dark);font-weight:650}
body.lab-page main{min-width:0;padding:4px 0 50px}
body.lab-page .experiment-heading{
  min-height:90px;
  margin:0 2px 16px;
  padding:9px 4px;
  display:flex;
  align-items:center;
}
body.lab-page .experiment-heading h2{
  margin:5px 0 8px;
  color:var(--learn-ink);
  font-size:clamp(24px,2.5vw,38px);
  line-height:1.12;
  font-weight:720;
  letter-spacing:-.045em;
}
body.lab-page .experiment-heading p{color:#6c798c;font-size:11px;line-height:1.65}
body.lab-page .run-status{
  min-width:126px;
  padding:13px 16px;
  color:var(--learn-ink);
  border:1px solid rgba(255,255,255,.92);
  border-radius:17px;
  background:rgba(255,255,255,.70);
  box-shadow:0 7px 24px rgba(45,64,94,.06);
}
body.lab-page .run-status>span{color:var(--learn-green);font-weight:650}
body.lab-page .run-status strong{color:#172437;font-weight:600;letter-spacing:-.04em}
body.lab-page .run-status small{color:#7b889a}
body.lab-page .learning-path{
  position:relative;
  margin:0 0 9px;
  padding:5px;
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:4px;
  border:1px solid rgba(15,23,42,.07);
  border-radius:16px;
  background:rgba(222,229,238,.55);
}
body.lab-page .learning-path button{
  min-height:43px;
  padding:9px 10px;
  color:#6d7a8e;
  text-align:left;
  border:0;
  border-radius:11px;
  background:transparent;
  box-shadow:none;
  font-size:10px;
  white-space:nowrap;
}
body.lab-page .learning-path button b{margin-right:6px;color:#98a4b5;font-weight:620}
body.lab-page .learning-path button:hover{background:rgba(255,255,255,.65)}
body.lab-page .learning-path [aria-pressed="true"]{
  color:#075fbf;
  background:#fff;
  box-shadow:0 2px 8px rgba(33,51,78,.12);
  font-weight:650;
}
body.lab-page .learning-path [aria-pressed="true"] b{color:var(--learn-blue)}
body.lab-page .stage-hint{margin:0 3px 15px;color:#718095;font-size:10px}
body.lab-page .scene-panel{
  overflow:hidden;
  border:1px solid rgba(15,23,42,.10);
  border-radius:24px;
  background:#fff;
  box-shadow:var(--learn-shadow);
}
body.lab-page .scene-toolbar{
  min-height:52px;
  padding:10px 15px;
  color:#617086;
  border-bottom:1px solid var(--learn-line);
  background:rgba(255,255,255,.96);
}
body.lab-page .scene-toolbar>span{color:#26364b;font-weight:680}
body.lab-page .scene-toolbar>div{gap:9px}
body.lab-page .scene-toolbar button,
body.lab-page .scene-toolbar select{min-height:31px;padding:5px 9px;border-radius:9px;background:#f5f7fa}
body.lab-page .scene-toolbar label{color:#6a788d}
body.lab-page #lab-viewport{
  height:clamp(340px,46vh,560px);
  background:
    radial-gradient(circle at 52% 45%,rgba(113,179,239,.20),transparent 38%),
    linear-gradient(145deg,#f9fbfd,#eaf0f6 70%);
}
body.lab-page #lab-viewport::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  box-shadow:inset 0 1px rgba(255,255,255,.9),inset 0 -70px 100px rgba(55,83,117,.055);
}
body.lab-page #scene-status{color:#5f7085;text-shadow:0 1px 0 rgba(255,255,255,.8)}
body.lab-page .viewport-caption{z-index:2;color:#728297}
body.lab-page .viewport-caption span:first-child{color:#43556b}
body.lab-page .scene-readouts>div{
  min-width:82px;
  padding:9px 11px;
  border:1px solid rgba(255,255,255,.85);
  border-radius:10px;
  background:rgba(255,255,255,.66);
  box-shadow:0 7px 22px rgba(46,72,104,.08);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
}
body.lab-page .scene-readouts span{color:#73849a}
body.lab-page .scene-readouts strong{color:#0872d8;text-shadow:none}
body.lab-page .explode-control{
  min-height:48px;
  padding:11px 15px;
  color:#6b798d;
  border-top:1px solid var(--learn-line);
  background:#fff;
}
body.lab-page .explode-control output{color:var(--learn-blue-dark);font-weight:650}
body.lab-page .section-control{background:#f8fafc}
body.lab-page .section-control #data-source-badge{
  color:#087e62;
  border-color:rgba(22,164,124,.22);
  border-radius:999px;
  background:rgba(22,164,124,.08);
}
body.lab-page .part-learning{padding:14px 15px;background:#f7f9fc;border-top:1px solid var(--learn-line)}
body.lab-page #part-targets button{color:#526176;background:#fff}
body.lab-page #part-targets [aria-pressed="true"]{color:#075fbf;border-color:rgba(8,120,249,.32);background:rgba(8,120,249,.08)}
body.lab-page #part-explanation{color:#637187}
body.lab-page .part-search label{color:#708096}
body.lab-page .part-search select,
body.lab-page .part-search button{background:#fff}
body.lab-page .metrics{gap:9px;margin:14px 0 18px}
body.lab-page .metric{
  min-height:86px;
  padding:14px;
  color:var(--learn-ink);
  border:1px solid rgba(255,255,255,.94);
  border-radius:16px;
  background:rgba(255,255,255,.82);
  box-shadow:0 7px 22px rgba(43,62,91,.07);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
}
body.lab-page .metric span{color:#728095;font-weight:580}
body.lab-page .metric strong{color:#0a67ca;font-weight:600;letter-spacing:-.04em}
body.lab-page .metric small{color:#8794a6}
body.lab-page .prediction-panel,
body.lab-page .energy-panel,
body.lab-page .chart-panel,
body.lab-page .notebook{
  color:var(--learn-ink);
  border:1px solid rgba(255,255,255,.94);
  border-radius:20px;
  background:rgba(255,255,255,.84);
  box-shadow:var(--learn-shadow);
  -webkit-backdrop-filter:blur(18px);
  backdrop-filter:blur(18px);
}
body.lab-page .prediction-panel{padding:20px;background:linear-gradient(145deg,rgba(255,255,255,.92),rgba(245,249,255,.9));border-color:rgba(8,120,249,.11)}
body.lab-page .prediction-panel .section-head small{color:#9a681f}
body.lab-page .prediction-panel>label,
body.lab-page .prediction-controls label{color:#69778c}
body.lab-page .energy-panel{
  padding:20px;
  border-color:rgba(8,120,249,.16);
  background:linear-gradient(135deg,rgba(235,246,255,.96),rgba(239,253,251,.92));
}
body.lab-page .energy-panel .section-head h3{color:#18273a}
body.lab-page .energy-panel .section-head>span{color:#087b68;font-weight:650}
body.lab-page .flow-nodes button{
  padding:13px 12px;
  color:#2c3c52;
  border-color:rgba(8,120,249,.14);
  border-radius:13px;
  background:rgba(255,255,255,.84);
  box-shadow:0 5px 16px rgba(33,67,111,.07);
}
body.lab-page .flow-nodes small{color:#7c8ca0}
body.lab-page .flow-nodes strong{color:#26364b}
body.lab-page .flow-nodes output,
body.lab-page .flow-arrow{color:#087a68}
body.lab-page .phase-track span{color:#8190a3;border-color:#cbd8e4}
body.lab-page .phase-track [data-active="true"]{color:#086b59;border-color:var(--learn-green);font-weight:650}
body.lab-page .energy-panel[data-direction="regen"]{border-color:rgba(181,108,22,.17);background:linear-gradient(135deg,#fff9ee,#f8fbff)}
body.lab-page .energy-panel[data-direction="regen"] .flow-arrow,
body.lab-page .energy-panel[data-direction="regen"] output{color:#a66012}
body.lab-page .chart-panel,
body.lab-page .notebook{padding:20px;margin-top:16px}
body.lab-page .section-head h3{color:#243349;font-size:14px;font-weight:680}
body.lab-page .section-head label,
body.lab-page .legend{color:#748297}
body.lab-page .legend i{background:var(--learn-blue)}
body.lab-page .legend .baseline{background:#d28a2f}
body.lab-page #chart{height:230px;margin-top:12px;border-radius:13px;background:linear-gradient(180deg,#f7faff,#fff);box-shadow:inset 0 0 0 1px rgba(15,23,42,.05)}
body.lab-page #chart text{fill:#7d8a9c}
body.lab-page .chart-bottom{color:#7a879a}
body.lab-page .chart-bottom button{color:#075fbf;background:transparent}
body.lab-page .notebook-grid label{color:#69778b}
body.lab-page .notebook-grid small{color:#8492a4}
body.lab-page .trial-list{color:#718095}
body.lab-page .trial-item{border-color:var(--learn-line)}
body.lab-page #analysis{color:#536277}
body.lab-page .checks{gap:8px}
body.lab-page .check{border-color:var(--learn-line);border-radius:11px;background:#f8fafc}
body.lab-page .check strong{color:#087c60}
body.lab-page .check[data-pass="false"] strong{color:#aa6718}
body.lab-page .check span{color:#718095}
body.lab-page details{border-color:var(--learn-line)}
body.lab-page summary{color:#66758a}
body.lab-page th,body.lab-page td{border-color:var(--learn-line)}
body.lab-page th{color:#69778b;background:#f4f7fa}
body.lab-page .teacher-review{border-color:var(--learn-line)}
body.lab-page .teacher-review small,
body.lab-page #rubric-fields b{color:#778599}
body.lab-page .teacher-review .section-head>strong{color:#a96516}
body.lab-page #rubric-fields label>span{color:#4f5e73}
body.lab-page #learning-evidence{color:#56657a}
body.lab-page #learning-evidence h3{color:#08755d}
body.lab-page #learning-evidence>p{color:#5f6f84}
body.lab-page #learning-evidence small{color:#8190a3}
body.lab-page .evidence-checks p{border-radius:11px;background:#f5f8fb}
body.lab-page .evidence-checks strong{color:#79879a}
body.lab-page .evidence-checks [data-present="true"] strong{color:#087d61}
body.lab-page .control-panel .input-label{color:#657388}
body.lab-page .control-panel .input-label span{color:var(--learn-blue-dark);font-weight:650}
body.lab-page .number-row>span{color:#8290a2}
body.lab-page .extra-option{color:#516075}
body.lab-page .extra-option small{color:#8b98aa}
body.lab-page .fault-switch{
  color:#8a5b1e;
  border-color:rgba(181,108,22,.17);
  border-radius:13px;
  background:#fff8ec;
}
body.lab-page .timing-controls label{color:#6d7a8e}
body.lab-page .run-buttons{gap:8px}
body.lab-page .primary,
body.lab-page #run.primary{
  color:#fff;
  border-color:#0878f9;
  background:linear-gradient(180deg,#188aff,#0878f9);
  box-shadow:0 9px 22px rgba(8,120,249,.23),inset 0 1px rgba(255,255,255,.26);
  font-weight:680;
}
body.lab-page .primary:hover:not(:disabled),
body.lab-page #run.primary:hover:not(:disabled){color:#fff;background:linear-gradient(180deg,#2b96ff,#006de7)}
body.lab-page #save-trial{width:100%;color:#086b59;border-color:rgba(22,164,124,.20);background:rgba(22,164,124,.08)}
body.lab-page .hint{color:#7b899c}
body.lab-page .task-heading h3{color:#26364b;font-weight:680}
body.lab-page .task-heading small{color:#8996a8}
body.lab-page #tasks label{color:#526176}
body.lab-page .scope-details{color:#718095}
body.lab-page .formula{color:#075fbf;border:1px solid rgba(8,120,249,.10);border-radius:12px;background:#f1f7ff}
body.lab-page .toast{
  bottom:24px;
  padding:13px 20px;
  color:#fff;
  border:1px solid rgba(255,255,255,.24);
  border-radius:999px;
  background:rgba(20,31,48,.88);
  box-shadow:0 18px 50px rgba(20,31,48,.25);
  -webkit-backdrop-filter:blur(18px);
  backdrop-filter:blur(18px);
}
body.lab-page.teaching .learning-path{top:140px;padding:6px;background:rgba(237,242,248,.88);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px)}
body.lab-page.teaching .control-panel{background:rgba(255,255,255,.86)}
body.lab-page.teaching>header{background:rgba(250,252,255,.76)}
body.lab-page #teaching-mode[aria-pressed="true"]{color:#fff;border-color:#9b641f;background:linear-gradient(#ca8736,#ad6b1b);box-shadow:0 6px 16px rgba(173,107,27,.22)}

@media (min-width:1700px){
  body.knowledge-page .workspace{grid-template-columns:260px minmax(0,1fr) 300px;gap:22px}
  body.knowledge-page article p,body.knowledge-page article ul,body.knowledge-page article ol{font-size:15px}
  body.lab-page .lab-layout{grid-template-columns:260px minmax(0,1fr) 330px;gap:20px}
  body.lab-page .metric{min-height:96px;padding:17px}
}

@media (max-width:1180px){
  body.learning-shell>header{padding-left:20px;padding-right:20px}
  body.learning-shell .platform-access .platform-account-state{display:none}
  body.knowledge-page .workspace{grid-template-columns:210px minmax(0,1fr)}
  body.knowledge-page .related{position:static;grid-column:2;max-height:none;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
  body.knowledge-page .related>h2,body.knowledge-page .related>.note,body.knowledge-page .related>.portal-link{grid-column:1/-1}
  body.knowledge-page .related .model-card{margin:0}
  body.lab-page .lab-layout{grid-template-columns:195px minmax(0,1fr) 260px;gap:12px}
  body.lab-page .experiment-nav,body.lab-page .control-panel{padding:18px 14px}
}

@media (max-width:900px){
  body.learning-shell>header{position:relative;min-height:82px;align-items:flex-start;flex-wrap:wrap}
  body.learning-shell>header nav{flex:1;min-width:300px}
  body.knowledge-page .hero{padding-top:34px;align-items:flex-start}
  body.knowledge-page .stats span{min-width:82px;padding:10px}
  body.knowledge-page .workspace{grid-template-columns:190px minmax(0,1fr)}
  body.knowledge-page .contents{top:16px}
  body.lab-page .coursebar{position:relative;top:auto}
  body.lab-page .lab-layout{grid-template-columns:minmax(0,1fr) 255px}
  body.lab-page .experiment-nav{position:static;grid-column:1/-1;max-height:none;padding:14px}
  body.lab-page .experiment-nav>.eyebrow,body.lab-page .experiment-nav>h1,body.lab-page .nav-help,body.lab-page .experiment-nav>.text-link{display:none}
  body.lab-page .experiment-nav nav{display:flex;gap:6px;overflow:auto;scrollbar-width:thin}
  body.lab-page .experiment-nav nav button{min-width:145px;margin:0;flex:0 0 145px}
  body.lab-page .control-panel{top:16px;max-height:calc(100vh - 32px)}
  body.lab-page.teaching .learning-path{top:0}
}

@media (max-width:700px){
  body.learning-shell>header{display:block;padding:15px 16px}
  body.learning-shell>header nav{margin-top:14px;justify-content:flex-start;gap:4px}
  body.learning-shell>header nav>a,body.learning-shell>header nav>button{min-height:34px;padding:7px 10px;font-size:11px}
  body.learning-shell .platform-access{width:100%;padding:7px 0 0}
  body.knowledge-page>main{padding-left:13px;padding-right:13px}
  body.knowledge-page .hero{display:block;min-height:0;padding:32px 3px 22px}
  body.knowledge-page .hero h1{font-size:38px}
  body.knowledge-page .stats{margin-top:22px;display:grid;grid-template-columns:repeat(3,1fr)}
  body.knowledge-page .stats span{min-width:0;align-items:center;text-align:center}
  body.knowledge-page main>.learning-path{gap:4px;padding:5px}
  body.knowledge-page .learning-path span{padding:7px 4px;font-size:9px;text-align:center}
  body.knowledge-page .courses{grid-template-columns:1fr}
  body.knowledge-page .course-card{min-height:155px;padding:21px}
  body.knowledge-page .course-card strong{max-width:70%}
  body.knowledge-page .searchbar{flex-wrap:wrap}
  body.knowledge-page .searchbar label{width:100%}
  body.knowledge-page .searchbar span{width:100%;padding-left:3px}
  body.knowledge-page .workspace{display:block}
  body.knowledge-page .contents{position:static;max-height:none;margin-bottom:14px;padding:16px 12px}
  body.knowledge-page .contents nav{max-height:250px;margin-bottom:16px;overflow:auto;border:1px solid var(--learn-line);border-radius:12px}
  body.knowledge-page #reader{min-height:0;padding:25px 20px}
  body.knowledge-page .related{display:grid;grid-template-columns:1fr 1fr;margin-top:14px;padding:16px 13px}
  body.knowledge-page footer{display:block}
  body.knowledge-page footer div{margin-top:10px;flex-wrap:wrap}
  body.lab-page .coursebar{padding:10px 12px;display:block}
  body.lab-page .course-tabs{width:100%}
  body.lab-page .course-tabs button{flex:1;padding:8px;font-size:10px;text-align:left}
  body.lab-page .lab-badge{margin-top:10px;display:block;text-align:center}
  body.lab-page .lab-layout{padding:12px;display:flex;flex-direction:column}
  body.lab-page .experiment-nav{width:100%;order:0}
  body.lab-page .control-panel{position:static;width:100%;max-height:none;order:1;display:grid;grid-template-columns:1fr 1fr;column-gap:14px}
  body.lab-page .control-panel>.eyebrow,body.lab-page .control-panel>h2,body.lab-page .task-heading,body.lab-page #tasks,body.lab-page .scope-details{grid-column:1/-1}
  body.lab-page .control-panel>.input-label,body.lab-page .control-panel>#input-range,body.lab-page .control-panel>.number-row,body.lab-page .fault-switch,body.lab-page .timing-controls,body.lab-page .run-buttons,body.lab-page #save-trial,body.lab-page .control-panel>.hint,body.lab-page #extra-controls{grid-column:1/-1}
  body.lab-page main{width:100%;order:2}
  body.lab-page .experiment-heading{min-height:0;padding:8px 2px}
  body.lab-page .run-status{min-width:105px;padding:11px 12px}
  body.lab-page .learning-path{gap:3px}
  body.lab-page .learning-path button{padding:8px 6px;font-size:9px}
  body.lab-page .learning-path button b{display:block;margin:0 0 3px}
  body.lab-page #lab-viewport{height:330px}
  body.lab-page .metrics{grid-template-columns:repeat(2,minmax(0,1fr))}
  body.lab-page .prediction-panel,body.lab-page .energy-panel,body.lab-page .chart-panel,body.lab-page .notebook{padding:15px}
  body.lab-page .notebook-grid{grid-template-columns:1fr}
}

@media (max-width:460px){
  body.knowledge-page .hero h1{font-size:33px}
  body.knowledge-page .stats b{font-size:22px}
  body.knowledge-page .related{grid-template-columns:1fr}
  body.knowledge-page .related>h2,body.knowledge-page .related>.note,body.knowledge-page .related>.portal-link{grid-column:1}
  body.lab-page .experiment-heading{display:block}
  body.lab-page .run-status{margin-top:12px;text-align:left}
  body.lab-page .learning-path button{white-space:normal}
  body.lab-page .learning-path button b{display:none}
  body.lab-page .scene-toolbar>div{width:100%;display:grid;grid-template-columns:1fr 1fr}
  body.lab-page .scene-toolbar label{white-space:normal}
  body.lab-page .flow-nodes{grid-template-columns:1fr;gap:5px}
  body.lab-page .flow-arrow{transform:rotate(90deg)}
  body.lab-page .phase-track{display:grid;grid-template-columns:1fr 1fr}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  body.learning-shell *,body.learning-shell *::before,body.learning-shell *::after{scroll-behavior:auto!important;animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}
}
@media (prefers-contrast:more){
  body.learning-shell{--learn-line:rgba(15,23,42,.22);--learn-line-strong:rgba(15,23,42,.34)}
  body.learning-shell button,body.learning-shell input,body.learning-shell select,body.learning-shell textarea{border-color:var(--learn-line-strong)}
}
@media (forced-colors:active){
  body.learning-shell *{box-shadow:none!important}
  body.learning-shell .portal-link,body.learning-shell .primary{border:1px solid ButtonText}
}