:root{--ink:#13233b;--muted:#63718a;--line:rgba(103,132,173,.18);--blue:#3979f6;--cyan:#72d8ef;--violet:#8877f7;--glass:rgba(255,255,255,.68);--shadow:0 22px 70px rgba(53,85,132,.14);--radius:28px;font-family:"SF Pro Display","PingFang SC","Microsoft YaHei",system-ui,sans-serif;color:var(--ink);background:#f4f8fd}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;min-height:100vh;background:radial-gradient(circle at 12% 4%,#fff 0,#f4f9ff 25%,transparent 48%),linear-gradient(145deg,#f8fbff,#edf4fc 48%,#f8f7ff);color:var(--ink);overflow-x:hidden}body:before{content:"";position:fixed;inset:0;pointer-events:none;opacity:.28;background-image:linear-gradient(rgba(57,121,246,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(57,121,246,.03) 1px,transparent 1px);background-size:36px 36px;mask-image:linear-gradient(to bottom,#000,transparent 75%)}a{color:inherit;text-decoration:none}button,input,textarea,select{font:inherit}button,a{touch-action:manipulation}.ambient{position:fixed;width:42vw;height:42vw;border-radius:50%;filter:blur(80px);pointer-events:none;opacity:.22}.ambient-a{left:-18vw;top:20vh;background:#73dff4}.ambient-b{right:-16vw;top:-10vw;background:#9c88ff}.glass{background:var(--glass);border:1px solid rgba(255,255,255,.9);box-shadow:var(--shadow),inset 0 1px 0 #fff;backdrop-filter:blur(24px) saturate(135%)}.public-shell{position:relative;width:min(1180px,calc(100% - 40px));margin:0 auto;padding:34px 0 90px}.hero,.session-hero{position:relative;min-height:440px;border-radius:38px;overflow:hidden;padding:70px;display:flex;align-items:flex-end;isolation:isolate}.hero:after,.session-hero:after{content:"";position:absolute;inset:0;z-index:-2;background:linear-gradient(118deg,rgba(255,255,255,.92) 0%,rgba(240,249,255,.63) 48%,rgba(235,233,255,.55) 100%)}#dimension-canvas{position:absolute;inset:0;width:100%;height:100%;z-index:-1}.hero-copy{max-width:700px}.eyebrow{display:block;margin:0 0 13px;font-size:12px;font-weight:800;letter-spacing:.18em;color:#5673a6;text-transform:uppercase}.hero h1,.session-hero h1{font-size:clamp(45px,7vw,82px);line-height:.98;letter-spacing:-.055em;margin:0 0 22px;background:linear-gradient(130deg,#14233c 15%,#355c98 58%,#6a59c8);-webkit-background-clip:text;color:transparent}.hero p,.session-hero p{font-size:18px;line-height:1.8;color:var(--muted);margin:0;max-width:620px}.hero-stat{position:absolute;right:54px;bottom:54px;display:grid;text-align:center}.hero-stat strong{font-size:54px;letter-spacing:-.06em}.hero-stat span{font-size:13px;color:var(--muted)}.section-head,.section-heading,.admin-head{display:flex;align-items:end;justify-content:space-between;gap:32px;margin:58px 0 24px}.section-head h2,.section-heading h2,.admin-head h1{margin:0;font-size:34px;letter-spacing:-.04em}.section-head p,.admin-head p{color:var(--muted);max-width:520px;line-height:1.7;margin:0}.course-grid,.export-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.course-card,.export-card{border-radius:25px;padding:26px;transition:transform .25s,box-shadow .25s,border-color .25s}.course-card:hover,.export-card:hover{transform:translateY(-5px);box-shadow:0 28px 80px rgba(53,85,132,.2);border-color:rgba(91,133,244,.3)}.course-card-top,.course-meta,.metric-row,.card-actions,.meta-row,.check-row{display:flex;align-items:center;justify-content:space-between;gap:12px}.date-chip,.status-live,.status-muted,.hero-live,.hero-closed,.session-tags span,.like-chip,.format-badge,.action-chip{border-radius:999px;padding:7px 11px;font-size:12px;font-weight:700;background:rgba(238,244,255,.86);color:#55709b}.status-live,.hero-live{color:#087c69;background:#ddf8f0}.status-live i,.hero-live i{display:inline-block;width:7px;height:7px;border-radius:50%;background:#20bd98;margin-right:6px;box-shadow:0 0 0 5px rgba(32,189,152,.13)}.course-card h3,.export-card h3{font-size:23px;letter-spacing:-.03em;margin:22px 0 10px}.course-card p,.export-card p{color:var(--muted);line-height:1.65}.course-meta{justify-content:flex-start;flex-wrap:wrap;margin-top:22px;font-size:13px;color:#526784}.course-meta span+span:before{content:"·";padding-right:12px;color:#9aabc3}.back-link{display:inline-flex;min-height:48px;align-items:center;color:#54709a;margin-bottom:18px}.session-hero{min-height:350px;padding:48px;align-items:center}.session-copy{max-width:760px}.session-hero h1{font-size:clamp(38px,6vw,64px)}.hero-live,.hero-closed{position:absolute;right:30px;top:30px}.session-tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:24px}.notice,.alert{padding:16px 20px;border-radius:16px;margin:18px 0}.success{background:#e7fbf4;color:#126b5d}.error,.danger{background:#fff0f0;color:#a43647}.tabs{position:sticky;top:12px;z-index:10;width:max-content;margin:24px auto;padding:6px;border-radius:18px}.tab{border:0;background:transparent;min-height:48px;padding:0 24px;border-radius:13px;color:var(--muted);font-weight:700;cursor:pointer}.tab.active{background:white;color:#265dcc;box-shadow:0 8px 26px rgba(66,101,155,.13)}.tab-panel{display:none}.tab-panel.active{display:block}.form-card,.question-form,.success-card,.locked-card{max-width:820px;margin:22px auto;border-radius:28px;padding:34px}.form-title h2{font-size:30px;margin:0 0 8px}.form-title p{color:var(--muted);margin:0 0 28px}.field-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}label{display:grid;gap:8px;color:#354b6c;font-weight:650;font-size:14px}label em{font-style:normal;color:#e35267;font-size:12px}input,textarea,select{width:100%;border:1px solid rgba(104,132,172,.22);border-radius:14px;background:rgba(255,255,255,.82);padding:14px 15px;color:var(--ink);outline:0;transition:.2s}input:focus,textarea:focus,select:focus{border-color:#6a98f8;box-shadow:0 0 0 4px rgba(57,121,246,.09)}textarea{resize:vertical;min-height:100px}.photo-upload{position:relative;margin:20px 0;border:1.5px dashed rgba(83,122,181,.36);border-radius:22px;min-height:190px;place-items:center;text-align:center;padding:25px;cursor:pointer;overflow:hidden}.photo-upload input{position:absolute;opacity:0;inset:0;cursor:pointer}.photo-icon{width:52px;height:52px;display:grid;place-items:center;border-radius:18px;background:linear-gradient(135deg,#dff8ff,#e9e6ff);font-size:26px}.photo-upload small{color:var(--muted)}.photo-upload img{display:none;max-height:250px;max-width:100%;border-radius:16px}.photo-upload.has-photo img{display:block}.primary-btn,.btn,.secondary-btn{min-height:48px;border:0;border-radius:14px;padding:0 22px;background:#fff;color:#325eae;font-weight:800;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:8px;transition:.2s;box-shadow:0 10px 28px rgba(66,105,174,.12)}.primary-btn,.btn.primary{width:100%;background:linear-gradient(135deg,#3979f6,#6b70ed);color:white;box-shadow:0 16px 35px rgba(61,104,221,.26)}.primary-btn:hover,.btn:hover{transform:translateY(-2px)}.primary-btn:disabled{opacity:.5;cursor:not-allowed;transform:none}.btn{width:auto}.btn.small{min-height:40px;padding:0 15px;font-size:13px}.btn.ghost{background:rgba(255,255,255,.65);border:1px solid var(--line);color:#42608f}.success-card{display:flex;align-items:center;gap:24px}.success-orbit{width:74px;height:74px;border-radius:50%;display:grid;place-items:center;background:linear-gradient(135deg,#d8fbf1,#dceeff);font-size:30px}.switch-row{display:flex;align-items:center;justify-content:space-between;margin:20px 0}.switch-row span{display:grid}.switch-row small{font-weight:400;color:var(--muted)}.switch-row input{position:absolute;opacity:0}.switch-row i{width:52px;height:30px;border-radius:999px;background:#d7dfeb;position:relative}.switch-row i:after{content:"";position:absolute;width:24px;height:24px;border-radius:50%;background:#fff;top:3px;left:3px;box-shadow:0 3px 10px #9baac0;transition:.2s}.switch-row input:checked+i{background:#5a83ee}.switch-row input:checked+i:after{transform:translateX(22px)}.counter{text-align:right;color:var(--muted)}.question-list-head{display:flex;justify-content:space-between;align-items:end;margin:40px 0 18px}.question-list-head h2{margin:0}.question-list-head p{color:var(--muted);font-size:13px}.question-list{display:grid;gap:14px}.question-item{padding:22px;border-radius:21px;display:grid;grid-template-columns:1fr auto;gap:15px}.question-item h3{margin:0 0 8px;font-size:17px;line-height:1.6}.question-item p{margin:0;color:var(--muted);font-size:13px}.like-button{min-width:66px;min-height:50px;border-radius:16px;border:1px solid var(--line);background:rgba(255,255,255,.75);color:#60718e;font-weight:800}.like-button.liked{color:#e34f70;background:#fff0f5;border-color:#ffc8d6}.question-skeleton{height:110px;border-radius:21px;animation:pulse 1.4s infinite}@keyframes pulse{50%{opacity:.45}}
.admin-body{background:#f4f7fb}.admin-shell{display:grid;grid-template-columns:240px 1fr;min-height:100vh}.admin-nav{position:sticky;top:14px;height:calc(100vh - 28px);margin:14px;border-radius:25px;padding:22px 14px;display:flex;flex-direction:column;z-index:20}.admin-brand{display:flex;gap:10px;align-items:center;font-weight:850;padding:10px}.brand-orbit{width:27px;height:27px;border:7px double #5a83ed;border-radius:50%;transform:rotate(-20deg)}.admin-nav nav{display:grid;gap:5px;margin-top:28px}.admin-nav nav a{min-height:45px;border-radius:12px;padding:0 13px;display:flex;align-items:center;color:#5a6d89;font-size:14px;font-weight:650}.admin-nav nav a:hover,.admin-nav nav a.active{background:#fff;color:#315fc0;box-shadow:0 8px 22px rgba(56,92,150,.1)}.admin-nav form{margin-top:auto}.nav-logout{width:100%;min-height:44px;border:0;background:transparent;color:#7b8799;cursor:pointer}.admin-main{min-width:0;padding:34px 34px 80px}.admin-head{margin:0 0 25px;align-items:center}.admin-head .btn.primary{width:auto}.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:15px}.stat-card{padding:22px;border-radius:21px}.stat-card strong{font-size:34px;display:block;margin-top:8px}.stat-card span{font-size:13px;color:var(--muted)}.alert{border:1px solid rgba(227,82,103,.12)}.table-card{border-radius:22px;overflow:hidden}.table-scroll{overflow:auto}table{border-collapse:collapse;width:100%;min-width:720px}th,td{text-align:left;padding:15px 17px;border-bottom:1px solid var(--line);font-size:13px;vertical-align:top}th{font-size:11px;text-transform:uppercase;letter-spacing:.08em;color:#6d7c93;background:rgba(247,250,255,.72);position:sticky;top:0}tbody tr:hover{background:rgba(255,255,255,.55)}code{background:#edf2f9;border-radius:7px;padding:3px 6px;color:#405774}.empty{text-align:center;padding:45px;color:var(--muted)}.filter-bar,.confirm-bar{border-radius:18px;padding:14px 18px;margin-bottom:18px}.filter-bar label{display:flex;align-items:center;gap:12px}.filter-bar select{max-width:440px}.course-edit,.question-edit{padding:22px;border-radius:20px;display:grid;gap:14px}.course-edit-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.course-edit-grid .wide{grid-column:span 2}.stack{display:grid;gap:15px;align-content:start}.stack h2{margin:10px 0 0}.admin-grid{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(350px,.75fr);gap:20px}.ip-line{color:var(--muted);font-size:13px}.truncate{max-width:260px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.upload-panel{max-width:700px;margin:50px auto;border-radius:30px;padding:55px;text-align:center;place-items:center;display:grid}.upload-icon{width:72px;height:72px;border-radius:22px;background:linear-gradient(135deg,#dff6ed,#e2f1ff);display:grid;place-items:center;color:#278165;font-weight:900;font-size:22px}.file-picker{position:relative}.file-picker input{position:absolute;opacity:0}.file-picker span{display:inline-flex;min-height:48px;align-items:center;border:1px dashed #91a8ca;padding:0 25px;border-radius:14px;cursor:pointer}.confirm-bar{position:sticky;bottom:15px;display:flex;justify-content:flex-end;gap:12px;margin-top:18px}.export-feature{padding:30px;border-radius:25px;display:flex;align-items:center;justify-content:space-between;gap:25px}.export-feature .btn{flex:none}.format-badge{color:#187d67;background:#ddf7ef}.export-card .metric-row{justify-content:flex-start;color:var(--muted);font-size:13px}.card-actions{justify-content:flex-start;margin-top:20px}.photo-link{color:#336bcf;font-weight:700}
@media(max-width:980px){.admin-shell{grid-template-columns:1fr}.admin-nav{position:sticky;top:0;height:auto;margin:0;border-radius:0;padding:8px 12px;overflow:auto;flex-direction:row;align-items:center}.admin-brand span:last-child{display:none}.admin-nav nav{display:flex;margin:0;white-space:nowrap}.admin-nav form{margin:0 0 0 auto}.nav-logout{width:55px}.admin-main{padding:25px 18px 70px}.stats-grid{grid-template-columns:repeat(2,1fr)}.admin-grid{grid-template-columns:1fr}.course-edit-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:680px){.public-shell{width:min(100% - 24px,1180px);padding-top:12px}.hero,.session-hero{min-height:420px;padding:28px;border-radius:28px;align-items:flex-end}.hero h1{font-size:48px}.hero p,.session-hero p{font-size:15px}.hero-stat{top:25px;right:25px;bottom:auto}.hero-stat strong{font-size:34px}.section-head,.section-heading,.admin-head{align-items:flex-start;flex-direction:column;margin:38px 0 18px;gap:10px}.course-grid,.export-grid,.field-grid{grid-template-columns:1fr}.course-card{padding:22px}.session-hero{min-height:360px;padding-top:90px}.hero-live,.hero-closed{left:22px;right:auto}.tabs{width:100%;display:grid;grid-template-columns:1fr 1fr}.tab{padding:0 8px}.form-card,.question-form,.success-card,.locked-card{padding:22px;border-radius:23px}.photo-upload{min-height:170px}.question-list-head{align-items:flex-start;flex-direction:column}.question-item{padding:18px}.admin-main{padding-inline:12px}.stats-grid{gap:10px}.stat-card{padding:16px}.stat-card strong{font-size:28px}.admin-head .btn.primary{width:100%}.course-edit-grid{grid-template-columns:1fr}.course-edit-grid .wide{grid-column:auto}.export-feature{align-items:flex-start;flex-direction:column}.export-feature .btn{width:100%}.upload-panel{padding:30px 20px}.confirm-bar{display:grid;grid-template-columns:1fr}.confirm-bar .btn{width:100%}.check-row{align-items:flex-start;flex-direction:column}}

.question-image-picker{position:relative;margin:16px 0;border:1.5px dashed rgba(83,122,181,.36);border-radius:18px;padding:18px;cursor:pointer;background:rgba(255,255,255,.48)}
.question-image-picker input{position:absolute;inset:0;opacity:0;cursor:pointer}
.question-image-picker span{display:grid;gap:5px}.question-image-picker small{color:var(--muted);font-weight:400}
.question-image-picker img{display:none;width:100%;max-height:320px;object-fit:contain;border-radius:14px;margin-top:12px;background:#eef3f9}
.question-image-picker.has-image img{display:block}
.question-item>div{min-width:0;max-width:100%}
.question-image-link{display:block;margin-top:12px;width:100%;max-width:100%;min-width:0;overflow:hidden}
.question-image{display:block;width:auto;height:auto;max-width:100%;max-height:360px;object-fit:contain;border-radius:14px;border:1px solid var(--line);background:#eef3f9}
.teacher-question .question-image{max-height:420px}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;animation:none!important;transition:none!important}#dimension-canvas{opacity:.55}}
.login-shell{position:relative;min-height:100vh;padding:34px;display:grid;grid-template-columns:minmax(0,1.15fr) minmax(380px,.85fr);gap:24px}.login-visual,.login-card{position:relative;border-radius:34px;overflow:hidden}.login-visual{min-height:620px;padding:58px;display:flex;flex-direction:column;justify-content:flex-end}.login-visual #dimension-canvas{z-index:0}.login-visual>*:not(canvas){position:relative;z-index:1}.login-visual h1{font-size:clamp(52px,7vw,88px);line-height:.98;letter-spacing:-.055em;margin:0 0 22px}.login-visual p{color:var(--muted);font-size:18px}.login-card{padding:clamp(30px,5vw,70px);display:flex;flex-direction:column;justify-content:center}.login-card h2{font-size:38px;margin:0 0 10px;letter-spacing:-.04em}.login-card p{color:var(--muted)}.login-card form{display:grid;gap:17px;margin-top:30px}.primary-link{display:inline-flex;align-items:center;min-height:48px;padding:0 20px;border-radius:14px;background:linear-gradient(135deg,#3979f6,#6b70ed);color:#fff;font-weight:800}.kpi-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:15px;margin-bottom:20px}.kpi{padding:24px;border-radius:22px}.kpi span,.kpi small{display:block;color:var(--muted)}.kpi strong{display:block;font-size:38px;margin:8px 0}.admin-card{border-radius:23px;padding:25px;margin-bottom:15px}.card-head{display:flex;align-items:center;justify-content:space-between}.card-head h2{margin:0}.table-wrap{overflow:auto}.table-wrap td small{display:block;color:var(--muted);margin-top:5px}.pill{display:inline-flex;padding:6px 10px;border-radius:999px;background:#ecf1f8;color:#65758e;font-size:12px;font-weight:750}.pill.live{background:#dcf8ef;color:#107864}.course-admin-list{display:grid;gap:14px}.course-admin-list details{padding:0}.course-admin-list summary{list-style:none;cursor:pointer;padding:22px 25px;display:flex;align-items:center;justify-content:space-between;gap:18px}.course-admin-list summary h2{margin:5px 0 0}.details-body{padding:0 25px 25px;border-top:1px solid var(--line)}.details-body form{display:grid;gap:14px;margin-top:20px}.field-grid.three{grid-template-columns:repeat(3,1fr)}.danger-btn{min-height:48px;border:0;border-radius:14px;background:#fff0f2;color:#b34054;font-weight:800}.primary-btn.compact{width:auto}
@media(max-width:980px){.login-shell{grid-template-columns:1fr}.login-visual{min-height:350px}.kpi-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:680px){.login-shell{padding:12px;gap:12px}.login-visual{min-height:300px;padding:28px}.login-visual h1{font-size:46px}.login-card{padding:28px 22px}.hero-copy{min-width:0}.hero h1{font-size:42px;overflow-wrap:anywhere}.kpi-grid{gap:10px}.field-grid.three{grid-template-columns:1fr}}
.hero-copy,.session-copy,.course-card,.export-card{min-width:0}.hero-copy p,.session-copy p,.course-card p,.export-card p{overflow-wrap:anywhere;word-break:break-word}.course-card{overflow:hidden}.course-card-top{flex-wrap:wrap}.course-card h3{overflow-wrap:anywhere}

/* Public mobile experience */
:root{
  --public-ink:#1d1d1f;
  --public-muted:#6e6e73;
  --public-blue:#0071e3;
  --public-blue-dark:#0066cc;
  --public-line:rgba(29,29,31,.09);
  --public-glass:rgba(255,255,255,.76);
  --public-shadow:0 24px 70px rgba(25,45,78,.10),0 2px 10px rgba(25,45,78,.04);
}
[hidden]{display:none!important}
.public-shell{
  width:min(1040px,calc(100% - 40px));
  padding:26px 0 max(88px,env(safe-area-inset-bottom));
  color:var(--public-ink);
}
.public-shell .glass{
  background:var(--public-glass);
  border:1px solid rgba(255,255,255,.88);
  box-shadow:var(--public-shadow),inset 0 1px 0 rgba(255,255,255,.96);
  -webkit-backdrop-filter:blur(34px) saturate(150%);
  backdrop-filter:blur(34px) saturate(150%);
}
.public-shell .eyebrow{
  margin-bottom:12px;
  color:#74747a;
  font-size:11px;
  font-weight:700;
  letter-spacing:.14em;
}
.hero-glow{
  position:absolute;
  width:380px;
  height:380px;
  border-radius:50%;
  filter:blur(8px);
  pointer-events:none;
  opacity:.72;
  animation:public-fluid-drift 9s ease-in-out infinite alternate;
}
.hero-glow-blue{
  top:-210px;
  right:-60px;
  background:radial-gradient(circle,rgba(126,202,255,.7),rgba(172,220,255,.18) 54%,transparent 72%);
}
.hero-glow-violet{
  right:180px;
  bottom:-300px;
  background:radial-gradient(circle,rgba(178,162,255,.55),rgba(216,207,255,.14) 58%,transparent 72%);
  animation-delay:-4s;
}
.public-shell .fluid-canvas{
  z-index:0;
  opacity:.46;
  mix-blend-mode:multiply;
  pointer-events:none;
}
.public-shell .session-copy,
.public-shell .hero-copy,
.public-shell .hero-stat,
.public-shell .hero-live,
.public-shell .hero-closed{z-index:2}

.downloads-hero{padding:48px;border-radius:34px}.downloads-hero h1{margin:0 0 12px;font-size:clamp(42px,6vw,70px);letter-spacing:-.055em}.downloads-hero p{margin:0;color:var(--muted);font-size:17px}.download-feature,.download-row{display:flex;align-items:center;justify-content:space-between;gap:28px;border-radius:26px;padding:28px;margin-top:18px}.download-feature h2,.download-row h3{margin:5px 0 7px}.download-feature p,.download-row p,.download-row small{margin:0;color:var(--muted)}.download-feature .btn.primary{width:auto}.download-list{display:grid;gap:14px}.download-pending{padding:10px 14px;border-radius:999px;background:rgba(224,233,246,.8);color:var(--muted);font-size:13px;font-weight:750;white-space:nowrap}.upload-card{margin-bottom:16px}.upload-card-head{display:flex;justify-content:space-between;align-items:flex-start;gap:24px}.upload-card-head h2{margin:6px 0}.upload-card-head p{color:var(--muted)}.direct-upload{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:12px;align-items:center;margin-top:20px}.direct-upload .btn.primary{width:auto}.upload-progress{grid-column:1/-1}.upload-progress span{display:block;color:var(--muted);font-size:13px;margin-bottom:8px}.upload-progress .progress-track{height:8px;margin:0}.availability-summary{display:flex;flex-wrap:wrap;gap:8px 16px;margin:18px 0;padding:15px;border-radius:16px;background:rgba(235,243,253,.72);color:var(--muted);font-size:13px}.availability-summary strong{color:var(--ink)}

@media(max-width:680px){.downloads-hero{padding:30px 24px}.download-feature,.download-row,.upload-card-head{align-items:flex-start;flex-direction:column}.download-feature .btn,.download-row .btn{width:100%}.direct-upload{grid-template-columns:1fr}.direct-upload .btn.primary{width:100%}.upload-progress{grid-column:auto}}
@keyframes public-fluid-drift{
  0%{transform:translate3d(-2%,0,0) scale(.96)}
  55%{transform:translate3d(3%,2%,0) scale(1.04)}
  100%{transform:translate3d(-1%,5%,0) scale(1)}
}
.public-shell .hero,
.public-shell .session-hero{
  background:
    linear-gradient(135deg,rgba(255,255,255,.96),rgba(248,251,255,.79) 55%,rgba(245,243,255,.75));
  border-radius:36px;
  isolation:isolate;
}
.public-shell .hero:after,
.public-shell .session-hero:after{
  background:
    linear-gradient(125deg,rgba(255,255,255,.3),transparent 55%),
    radial-gradient(circle at 88% 15%,rgba(125,202,255,.22),transparent 35%);
}
.home-hero{
  min-height:390px;
  padding:58px 62px;
  align-items:center;
}
.home-hero .hero-copy{position:relative;z-index:1;max-width:650px}
.home-hero h1{
  display:flex;
  align-items:baseline;
  gap:.2em;
  margin:0 0 18px;
  color:var(--public-ink);
  background:none;
  font-size:clamp(58px,8vw,86px);
  font-weight:700;
  line-height:.98;
  letter-spacing:-.065em;
  -webkit-text-fill-color:currentColor;
}
.home-hero h1 i{
  color:#a1a1a6;
  font-size:.66em;
  font-style:normal;
  font-weight:500;
}
.home-hero p{
  color:var(--public-muted);
  font-size:19px;
  line-height:1.55;
  letter-spacing:-.01em;
}
.home-hero .hero-stat{
  right:40px;
  bottom:40px;
  min-width:78px;
  padding:13px 16px 12px;
  border:1px solid rgba(255,255,255,.8);
  border-radius:22px;
  background:rgba(255,255,255,.52);
  box-shadow:0 12px 35px rgba(50,70,104,.08);
  -webkit-backdrop-filter:blur(18px);
  backdrop-filter:blur(18px);
}
.home-hero .hero-stat strong{font-size:32px;font-weight:700;line-height:1}
.home-hero .hero-stat span{margin-top:5px;color:var(--public-muted);font-size:11px}
.public-shell .section-head{
  margin:52px 4px 20px;
  align-items:end;
}
.software-prep{
  position:relative;display:grid;min-height:150px;margin:22px 0 0;padding:28px 30px;
  grid-template-columns:64px minmax(0,1fr) minmax(210px,250px);align-items:center;gap:22px;
  overflow:hidden;border-radius:28px
}
.software-prep:after{content:"";position:absolute;z-index:-1;inset:0;background:linear-gradient(112deg,rgba(235,248,255,.88),rgba(245,242,255,.72))}
.software-prep-icon{display:grid;width:64px;height:64px;place-items:center;border-radius:20px;color:#087b63;background:linear-gradient(145deg,#d9f8ed,#e3efff)}
.software-prep-icon svg{width:30px;height:30px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.software-prep-copy{min-width:0}
.software-prep-copy .eyebrow{margin-bottom:7px}
.software-prep-copy h2{margin:0 0 8px;color:var(--public-ink);font-size:25px;letter-spacing:-.035em}
.software-prep-copy p{margin:0;color:var(--public-muted);font-size:14px;line-height:1.65}
.software-prep-copy small{display:block;margin-top:8px;color:#6e6e73;font-size:11px}
.software-prep-actions{display:grid;gap:10px}
.software-prep-action{display:grid;min-height:68px;padding:12px 16px;grid-template-columns:minmax(0,1fr) auto;align-content:center;column-gap:10px;border-radius:18px;color:#fff;background:linear-gradient(135deg,#087cec,#6168ef);box-shadow:0 16px 36px rgba(53,103,220,.24);transition:transform .25s ease,box-shadow .25s ease}
.software-prep-action:hover{transform:translateY(-2px);box-shadow:0 20px 44px rgba(53,103,220,.3)}
.software-prep-action span{font-size:15px;font-weight:750}
.software-prep-action small{grid-column:1;color:rgba(255,255,255,.76);font-size:11px}
.software-prep-action b{grid-column:2;grid-row:1/3;align-self:center;font-size:19px;font-weight:500}
.software-prep-action.quark{background:linear-gradient(135deg,#635bff,#8b5cf6);box-shadow:0 16px 36px rgba(99,91,255,.22)}
.software-prep-action.quark:hover{box-shadow:0 20px 44px rgba(99,91,255,.3)}
.meeting-dock{position:fixed;right:max(18px,env(safe-area-inset-right));bottom:max(18px,env(safe-area-inset-bottom));z-index:80;display:grid;grid-template-columns:38px minmax(0,1fr) auto;align-items:center;gap:11px;min-width:270px;padding:10px 11px;border-radius:19px;background:rgba(255,255,255,.82);box-shadow:0 18px 55px rgba(26,67,120,.19),inset 0 1px 0 #fff;-webkit-backdrop-filter:blur(22px) saturate(150%);backdrop-filter:blur(22px) saturate(150%)}
.meeting-dock-icon{display:grid;width:38px;height:38px;place-items:center;border-radius:13px;color:#0877e8;background:linear-gradient(145deg,#def4ff,#e9e7ff)}
.meeting-dock-icon svg{width:21px;height:21px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.meeting-dock-copy{display:grid;line-height:1.15}
.meeting-dock-copy small{color:#74747a;font-size:10px;font-weight:650}
.meeting-dock-copy strong{margin-top:3px;color:#1d1d1f;font-size:15px;letter-spacing:.055em}
.meeting-dock button{min-height:36px;padding:0 13px;border:0;border-radius:11px;color:#fff;background:#0877e8;font-size:12px;font-weight:750;cursor:pointer}
.meeting-dock button:focus-visible{outline:3px solid rgba(0,113,227,.24);outline-offset:2px}
.sr-only{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important;border:0!important}
.export-feature>div{min-width:0;flex:1 1 auto}
.export-feature .btn.primary{width:auto;max-width:100%;flex:0 0 auto;white-space:nowrap}
.export-feature h2{margin:16px 0 8px;font-size:28px;letter-spacing:-.035em}
.export-feature p{max-width:720px;margin:0;color:var(--muted);line-height:1.7}
.export-grid{min-width:0}
.export-card{min-width:0;overflow:hidden}
.teacher-body{background:linear-gradient(145deg,#f8fbff,#eef5ff 52%,#f7f4ff)}
.teacher-shell{position:relative;width:min(1380px,calc(100% - 44px));margin:0 auto;padding:22px 0 100px}
.teacher-topbar{display:flex;align-items:center;justify-content:space-between;gap:28px;padding:28px 30px;border-radius:28px}
.teacher-topbar h1{margin:0;color:#17181b;font-size:40px;line-height:1.05;letter-spacing:-.045em}
.teacher-topbar p{margin:8px 0 0;color:#777b84;font-size:13px}
.teacher-top-actions{display:flex;align-items:center;gap:10px}
.teacher-top-actions form{margin:0}
.teacher-ghost-btn{min-height:44px;padding:0 17px;border:1px solid rgba(29,29,31,.08);border-radius:13px;color:#3f556f;background:rgba(255,255,255,.78);font-weight:750;cursor:pointer}
.teacher-controls{display:grid;grid-template-columns:minmax(280px,520px) auto 1fr;align-items:end;gap:18px;margin-top:16px;padding:18px 20px;border-radius:22px}
.teacher-controls form,.teacher-controls label{min-width:0}
.teacher-controls select{min-height:48px;background:rgba(255,255,255,.9)}
.teacher-filter{display:flex!important;min-height:48px;grid-template-columns:auto 1fr!important;align-items:center;gap:9px!important;padding:0 15px;border:1px solid rgba(29,29,31,.08);border-radius:13px;background:rgba(255,255,255,.7);white-space:nowrap}
.teacher-filter input{width:18px;min-height:18px;padding:0;accent-color:#0877e8;-webkit-appearance:auto}
.teacher-refresh{display:flex;align-items:center;justify-self:end;gap:8px;color:#737780;font-size:12px}
.teacher-refresh i,.teacher-live i{display:inline-block;width:8px;height:8px;border-radius:50%;background:#24bc91;box-shadow:0 0 0 5px rgba(36,188,145,.12)}
.teacher-session-summary{display:flex;align-items:end;justify-content:space-between;gap:24px;padding:42px 6px 20px}
.teacher-session-summary h2{margin:0;color:#17181b;font-size:34px;letter-spacing:-.04em}
.teacher-session-summary p{margin:9px 0 0;color:#777b84}
.teacher-live,.teacher-muted{display:inline-flex;align-items:center;gap:9px;padding:9px 13px;border-radius:999px;color:#08765f;background:#e1f8f1;font-size:12px;font-weight:750}
.teacher-muted{color:#6e727a;background:#eef1f5}
.teacher-question-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:15px}
.teacher-question{display:grid;min-width:0;min-height:190px;align-content:space-between;gap:18px;padding:24px;border-radius:24px;transition:opacity .2s,border-color .2s,transform .2s}
.teacher-question.answered{opacity:.56}
.teacher-question-meta{display:flex;align-items:center;justify-content:space-between;gap:16px;color:#7b7f87;font-size:12px}
.teacher-question-meta span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.teacher-question-meta strong{flex:0 0 auto;color:#df5474}
.teacher-question h3{margin:0;color:#1d1e21;font-size:22px;line-height:1.55;letter-spacing:-.025em;overflow-wrap:anywhere}
.teacher-question button{justify-self:start;min-height:38px;padding:0 14px;border:0;border-radius:11px;color:#086dcc;background:#e8f3ff;font-size:12px;font-weight:750;cursor:pointer}
.teacher-question.answered button{color:#5f6570;background:#eef1f5}
.teacher-empty{grid-column:1/-1;padding:70px 24px;border-radius:24px;color:#777b84;text-align:center}
.teacher-question[hidden]{display:none}
.teacher-login-shell .login-visual h1{max-width:680px}
.teacher-account-picker{margin:0;padding:0;border:0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.teacher-account-picker legend{margin-bottom:9px;color:#354b6c;font-size:14px;font-weight:650}
.teacher-account-picker label{position:relative;display:block;cursor:pointer}
.teacher-account-picker input{position:absolute;opacity:0;pointer-events:none}
.teacher-account-picker span{min-height:78px;padding:14px 16px;border:1px solid rgba(104,132,172,.22);border-radius:16px;display:grid;align-content:center;gap:2px;color:#52637c;background:rgba(255,255,255,.66);transition:.2s}
.teacher-account-picker b{font-size:20px;color:#24364f}
.teacher-account-picker small{font-size:11px;font-weight:500;color:#818b9a}
.teacher-account-picker input:checked+span{border-color:#4d85f3;color:#1f65d2;background:linear-gradient(145deg,#edf7ff,#f0efff);box-shadow:0 0 0 4px rgba(57,121,246,.09)}
.teacher-account-picker input:focus-visible+span{outline:3px solid rgba(0,113,227,.28);outline-offset:2px}
.public-shell .section-head h2{
  color:var(--public-ink);
  font-size:34px;
  font-weight:700;
  letter-spacing:-.045em;
}
.public-shell .section-head p{
  color:var(--public-muted);
  font-size:14px;
}
.public-shell .course-grid{gap:16px}
.public-shell .course-entry{display:block;min-width:0}
.public-shell .course-card{
  display:flex;
  min-height:250px;
  padding:26px;
  border-color:rgba(255,255,255,.9);
  border-radius:26px;
  flex-direction:column;
  transition:border-color .28s ease,box-shadow .28s ease,transform .28s ease;
}
.public-shell .course-card.course-open{
  border-color:rgba(87,166,244,.25);
  box-shadow:0 25px 70px rgba(25,69,122,.12),inset 0 1px 0 rgba(255,255,255,.98);
}
.public-shell .date-chip,
.public-shell .status-live,
.public-shell .status-muted,
.public-shell .hero-live,
.public-shell .hero-closed,
.public-shell .session-tags span{
  min-height:28px;
  padding:6px 11px;
  color:#6e6e73;
  background:rgba(245,245,247,.8);
  font-size:11px;
  font-weight:650;
  line-height:16px;
}
.public-shell .status-live,
.public-shell .hero-live{
  color:#087b63;
  background:rgba(222,248,238,.9);
}
.public-shell .course-card-copy{margin:auto 0}
.public-shell .course-card h3{
  margin:24px 0 9px;
  color:var(--public-ink);
  font-size:24px;
  font-weight:700;
  line-height:1.25;
  letter-spacing:-.035em;
}
.public-shell .course-card p{
  display:-webkit-box;
  margin:0;
  overflow:hidden;
  color:var(--public-muted);
  font-size:14px;
  line-height:1.65;
  -webkit-box-orient:vertical;
  -webkit-line-clamp:3;
}
.course-card-footer{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:12px;
  margin-top:22px;
}
.public-shell .course-meta{
  margin:0;
  color:#7b7b80;
  font-size:12px;
}
.course-arrow{
  display:grid;
  width:38px;
  height:38px;
  flex:0 0 auto;
  place-items:center;
  border-radius:50%;
  color:var(--public-blue);
  background:rgba(0,113,227,.08);
  font-size:18px;
}
.course-replay-link{
  display:grid;min-height:72px;padding:12px 15px;grid-template-columns:44px minmax(0,1fr) auto;
  align-items:center;gap:12px;border-radius:20px;color:var(--public-ink);
  transition:border-color .25s ease,box-shadow .25s ease,transform .25s ease
}
.course-replay-link:hover{border-color:rgba(0,113,227,.2);box-shadow:0 18px 46px rgba(25,69,122,.12);transform:translateY(-2px)}
.course-replay-icon{display:grid;width:44px;height:44px;place-items:center;border-radius:14px;background:linear-gradient(145deg,#e2f2ff,#eeeaff)}
.course-replay-icon i{display:block;width:0;height:0;margin-left:3px;border-top:6px solid transparent;border-bottom:6px solid transparent;border-left:10px solid var(--public-blue)}
.course-replay-link>span:nth-child(2){display:grid;min-width:0;gap:2px}
.course-replay-link strong{font-size:14px}
.course-replay-link small{overflow:hidden;color:var(--public-muted);font-size:11px;text-overflow:ellipsis;white-space:nowrap}
.course-replay-link b{color:var(--public-blue);font-size:18px;font-weight:500}
.public-shell .back-link{
  gap:5px;
  margin:0 0 14px;
  color:#5e5e63;
  font-size:14px;
  font-weight:600;
}
.public-shell .back-link span{font-size:24px;font-weight:400;line-height:1}
.public-shell .session-hero{
  min-height:292px;
  padding:42px 44px;
  align-items:center;
}
.public-shell .session-copy{position:relative;z-index:1;width:min(100%,760px);max-width:calc(100% - 165px)}
.public-shell .session-time{
  display:flex;
  gap:8px;
  margin:0 0 13px;
  color:#4f4f54;
  font-size:14px;
  font-weight:650;
  line-height:1.4;
}
.public-shell .session-time span+span:before{content:"·";padding-right:8px;color:#a1a1a6}
.public-shell .session-hero h1{
  margin:0 0 14px;
  color:var(--public-ink);
  background:none;
  font-size:clamp(36px,4.6vw,54px);
  font-weight:700;
  line-height:1.06;
  letter-spacing:-.055em;
  -webkit-text-fill-color:currentColor;
  overflow-wrap:anywhere;
}
.public-shell .session-hero .session-content{
  max-width:680px;
  margin:0;
  color:var(--public-muted);
  font-size:16px;
  line-height:1.7;
}
.public-shell .session-tags{margin-top:21px}
.public-shell .session-tags span{border:1px solid rgba(29,29,31,.04);background:rgba(255,255,255,.58)}
.public-shell .hero-live,
.public-shell .hero-closed{right:24px;top:24px;max-width:145px;line-height:1.35;text-align:center;white-space:normal}
.public-shell .notice{
  margin:16px 0 0;
  padding:15px 18px;
  border:1px solid transparent;
  border-radius:16px;
  font-size:14px;
  font-weight:600;
}
.public-shell .notice.success{border-color:rgba(36,160,120,.12);background:rgba(230,250,243,.9)}
.public-shell .notice.error{border-color:rgba(208,71,88,.12);background:rgba(255,239,241,.9)}
.replay-card{
  display:flex;
  max-width:760px;
  min-height:88px;
  align-items:center;
  gap:16px;
  margin:16px auto 0;
  padding:16px 18px;
  border-radius:22px;
  transition:border-color .25s ease,box-shadow .25s ease,transform .25s ease;
}
.replay-icon{
  display:grid;
  width:52px;
  height:52px;
  flex:0 0 auto;
  place-items:center;
  border-radius:17px;
  color:var(--public-blue);
  background:linear-gradient(145deg,#e3f3ff,#eceeff);
}
.replay-icon i{
  width:0;
  height:0;
  margin-left:3px;
  border-top:7px solid transparent;
  border-bottom:7px solid transparent;
  border-left:11px solid currentColor;
}
.replay-copy{display:grid;min-width:0;gap:2px}
.replay-copy .eyebrow{margin:0 0 1px;font-size:9px}
.replay-copy strong{color:var(--public-ink);font-size:15px;line-height:1.35}
.replay-copy small{color:var(--public-muted);font-size:11px}
.replay-arrow{
  display:grid;
  width:34px;
  height:34px;
  margin-left:auto;
  flex:0 0 auto;
  place-items:center;
  border-radius:50%;
  color:var(--public-blue);
  background:rgba(0,113,227,.07);
}
.public-shell .tabs{
  position:relative;
  top:auto;
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  width:320px;
  margin:18px auto 20px;
  padding:5px;
  border:1px solid rgba(29,29,31,.07);
  border-radius:17px;
  background:rgba(247,249,252,.96);
  box-shadow:0 12px 32px rgba(25,45,78,.10),inset 0 1px 0 #fff;
  -webkit-backdrop-filter:none;
  backdrop-filter:none;
}
.public-shell .tab{
  width:auto;
  min-height:46px;
  padding:0 22px;
  border-radius:13px;
  color:#6e6e73;
  font-size:14px;
  font-weight:650;
}
.public-shell .tab.active{
  color:var(--public-ink);
  background:rgba(255,255,255,.94);
  box-shadow:0 5px 18px rgba(25,45,78,.09),inset 0 0 0 1px rgba(29,29,31,.03);
}
.public-shell .form-card,
.public-shell .question-form,
.public-shell .success-card,
.public-shell .locked-card{
  max-width:760px;
  margin:18px auto 0;
  padding:34px;
  border-radius:28px;
}
.public-shell .form-title h2,
.public-shell .success-card h2,
.public-shell .locked-card h2{
  margin:0 0 8px;
  color:var(--public-ink);
  font-size:30px;
  font-weight:700;
  line-height:1.18;
  letter-spacing:-.04em;
}
.public-shell .form-title p{
  margin:0 0 28px;
  color:var(--public-muted);
  font-size:14px;
  line-height:1.6;
}
.public-shell label{
  gap:9px;
  color:#3b3b40;
  font-size:13px;
  font-weight:650;
}
.public-shell label em{
  margin-left:3px;
  color:#d1495b;
  font-size:11px;
}
.public-shell input,
.public-shell textarea{
  min-height:50px;
  padding:14px 15px;
  border:1px solid rgba(29,29,31,.11);
  border-radius:13px;
  color:var(--public-ink);
  background:rgba(255,255,255,.72);
  font-size:16px;
  line-height:1.4;
  -webkit-appearance:none;
  appearance:none;
}
.public-shell textarea{min-height:122px;resize:vertical}
.public-shell input::placeholder,
.public-shell textarea::placeholder{color:#9b9ba0}
.public-shell input:focus,
.public-shell textarea:focus{
  border-color:rgba(0,113,227,.7);
  box-shadow:0 0 0 4px rgba(0,113,227,.10);
}
.public-shell .field-grid{gap:14px}
.public-shell .photo-upload{
  min-height:0;
  margin:20px 0 16px;
  padding:24px;
  border:1.5px dashed rgba(0,113,227,.26);
  border-radius:21px;
  background:rgba(248,251,255,.58);
  cursor:pointer;
}
.public-shell .photo-upload:hover{border-color:rgba(0,113,227,.5);background:rgba(246,250,255,.78)}
.public-shell .photo-upload:focus-within{box-shadow:0 0 0 4px rgba(0,113,227,.09)}
.public-shell .photo-upload input{
  z-index:5;
  min-height:100%;
  padding:0;
  border:0;
  border-radius:inherit;
}
.photo-prompt{display:grid;position:relative;z-index:1;place-items:center;gap:8px}
.public-shell .photo-icon{
  width:54px;
  height:54px;
  margin-bottom:2px;
  border-radius:17px;
  color:var(--public-blue);
  background:linear-gradient(145deg,#e5f3ff,#edf0ff);
}
.photo-icon svg{width:27px;height:27px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.photo-prompt strong{font-size:16px;color:var(--public-ink)}
.photo-action{
  display:inline-flex;
  min-height:33px;
  align-items:center;
  padding:0 13px;
  border-radius:999px;
  color:var(--public-blue-dark);
  background:rgba(0,113,227,.08);
  font-size:12px;
  font-weight:700;
}
.photo-preview-wrap{display:none;position:relative;z-index:1;width:100%;place-items:center;gap:8px}
.public-shell .photo-upload img{
  display:block;
  width:auto;
  max-width:100%;
  height:auto;
  max-height:280px;
  border-radius:16px;
  object-fit:contain;
  box-shadow:0 12px 35px rgba(25,45,78,.12);
}
.photo-reselect{color:var(--public-blue-dark);font-size:12px;font-weight:650}
.photo-upload.has-photo .photo-prompt{display:none}
.photo-upload.has-photo .photo-preview-wrap{display:grid}
.photo-guidance{
  display:grid;
  position:relative;
  z-index:1;
  width:100%;
  gap:5px;
  margin-top:18px;
  padding-top:16px;
  border-top:1px solid rgba(29,29,31,.07);
  color:#74747a;
  text-align:left;
  font-size:11px;
  font-weight:450;
  line-height:1.55;
}
.photo-guidance span{position:relative;padding-left:12px}
.photo-guidance span:before{content:"";position:absolute;left:1px;top:.65em;width:3px;height:3px;border-radius:50%;background:#a1a1a6}
.photo-status{
  position:relative;
  z-index:1;
  margin-top:10px;
  color:#8a8a90;
  text-align:left;
  font-size:11px;
  font-weight:550;
}
.photo-upload.has-photo .photo-status{color:#14745f}
.photo-upload.has-error{border-color:rgba(208,71,88,.52);background:rgba(255,245,246,.7)}
.photo-upload.has-error .photo-status{color:#b33a4d}
.signin-progress{
  display:grid;
  gap:8px;
  margin:0 0 14px;
  color:#6e6e73;
  font-size:12px;
}
.progress-track{height:4px;overflow:hidden;border-radius:999px;background:rgba(0,113,227,.11)}
.progress-track i{display:block;width:8%;height:100%;border-radius:inherit;background:var(--public-blue);transition:width .2s ease}
.public-shell .form-feedback{
  min-height:20px;
  margin:10px 0;
  color:#b33a4d;
  font-size:12px;
  font-weight:600;
  line-height:1.5;
}
.public-shell .form-feedback.is-success{color:#14745f}
.public-shell .primary-btn,
.public-shell .secondary-btn{
  min-height:50px;
  border-radius:14px;
  font-size:15px;
  font-weight:700;
}
.public-shell .primary-btn{
  background:var(--public-blue);
  box-shadow:0 12px 30px rgba(0,113,227,.22);
}
.public-shell .primary-btn:active{background:var(--public-blue-dark);transform:scale(.99)}
.public-shell .primary-btn[aria-busy="true"]{cursor:wait;opacity:.68}
.public-shell .secondary-btn{
  min-width:140px;
  color:var(--public-blue-dark);
  background:rgba(0,113,227,.08);
  box-shadow:none;
}
.public-shell .success-card{gap:20px}
.public-shell .success-orbit{
  width:62px;
  height:62px;
  flex:0 0 auto;
  color:#14745f;
  background:linear-gradient(145deg,#def8ee,#e5f2ff);
  font-size:25px;
  font-weight:700;
}
.public-shell .success-card p{margin:0 0 4px;color:#4d4d52}
.public-shell .success-card small{color:var(--public-muted)}
.public-shell .switch-row{
  position:relative;
  min-height:58px;
  margin:0;
  padding:4px 0;
  cursor:pointer;
}
.public-shell .switch-row span{padding-right:16px}
.public-shell .switch-row strong{color:var(--public-ink);font-size:15px}
.public-shell .switch-row small{margin-top:3px;color:var(--public-muted);font-size:11px;line-height:1.45}
.public-shell .switch-row i{flex:0 0 auto;background:#d2d2d7}
.public-shell .switch-row input:focus-visible+i{box-shadow:0 0 0 4px rgba(0,113,227,.13)}
.public-shell .switch-row input:checked+i{background:#34c759}
.anonymous-confirmation{
  display:flex;
  min-height:42px;
  align-items:center;
  gap:8px;
  margin:0 0 16px;
  padding:10px 13px;
  border:1px solid rgba(34,158,102,.12);
  border-radius:12px;
  color:#14745f;
  background:rgba(228,249,239,.76);
  font-size:13px;
  font-weight:700;
}
.anonymous-confirmation span{display:grid;width:20px;height:20px;place-items:center;border-radius:50%;background:rgba(34,158,102,.12);font-size:11px}
.question-name-field{margin:0 0 16px}
.question-name-field>span{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  gap:12px;
}
.question-name-field>span small{
  color:#85858b;
  font-size:10px;
  font-weight:500;
}
.public-shell .question-name-field input[readonly]{
  color:#55555a;
  background:rgba(245,245,247,.72);
  cursor:default;
  -webkit-text-fill-color:#55555a;
  opacity:1;
}
.public-shell .counter{margin-top:-2px;color:#8a8a90;font-size:11px}
.public-shell .locked-card{
  display:grid;
  place-items:center;
  padding:46px 28px;
  text-align:center;
}
.public-shell .locked-card .lock-icon{
  display:grid;
  width:58px;
  height:58px;
  margin-bottom:17px;
  place-items:center;
  border-radius:18px;
  color:#14745f;
  background:linear-gradient(145deg,#e4f8f1,#e8f2ff);
  font-size:24px;
  font-weight:700;
}
.public-shell .locked-card p{max-width:430px;margin:0 0 22px;color:var(--public-muted);font-size:13px;line-height:1.65}
.public-shell .question-list-head{
  gap:24px;
  margin:42px 4px 18px;
}
.public-shell .question-list-head h2{
  margin:0;
  color:var(--public-ink);
  font-size:28px;
  font-weight:700;
  letter-spacing:-.04em;
}
.public-shell .question-list-head p{
  max-width:360px;
  margin:0;
  color:var(--public-muted);
  font-size:11px;
  line-height:1.55;
  text-align:right;
}
.public-shell .question-list{gap:12px}
.public-shell .question-item{
  padding:20px 21px;
  border-radius:20px;
}
.public-shell .question-item h3{
  margin:0 0 9px;
  color:var(--public-ink);
  font-size:16px;
  font-weight:600;
  line-height:1.6;
  letter-spacing:-.01em;
  overflow-wrap:anywhere;
}
.public-shell .question-item p{color:#828287;font-size:11px}
.public-shell .like-button{
  min-width:66px;
  min-height:48px;
  align-self:start;
  border-color:rgba(29,29,31,.08);
  border-radius:15px;
  color:#6e6e73;
  background:rgba(248,248,250,.8);
  cursor:pointer;
}
.public-shell .like-button.liked{
  border-color:rgba(230,65,101,.14);
  color:#d83b60;
  background:rgba(255,237,242,.85);
}
.public-shell .like-button[aria-busy="true"]{opacity:.6}
.public-shell .question-skeleton{
  background:linear-gradient(100deg,rgba(255,255,255,.55) 25%,rgba(242,246,251,.9) 40%,rgba(255,255,255,.55) 55%);
  background-size:220% 100%;
  animation:public-skeleton 1.5s ease-in-out infinite;
}
@keyframes public-skeleton{to{background-position-x:-220%}}
.public-shell :focus-visible{
  outline:3px solid rgba(0,113,227,.28);
  outline-offset:3px;
}
@media(hover:hover){
  .public-shell .course-card:hover{
    border-color:rgba(0,113,227,.2);
    box-shadow:0 30px 80px rgba(25,69,122,.14);
    transform:translateY(-4px);
  }
  .public-shell .primary-btn:hover{background:var(--public-blue-dark);transform:translateY(-1px)}
  .replay-card:hover{border-color:rgba(0,113,227,.18);box-shadow:0 25px 70px rgba(25,69,122,.13);transform:translateY(-2px)}
}
@media(max-width:680px){
  .meeting-dock{right:12px;bottom:max(12px,env(safe-area-inset-bottom));left:12px;min-width:0;padding:9px 10px;border-radius:17px}
  .export-feature .btn.primary{width:100%}
  .teacher-shell{width:calc(100% - 24px);padding-top:12px}
  .teacher-topbar{align-items:flex-start;flex-direction:column;padding:23px 20px;border-radius:23px}
  .teacher-topbar h1{font-size:34px}
  .teacher-top-actions{width:100%}
  .teacher-top-actions>*{flex:1}
  .teacher-top-actions .teacher-ghost-btn{width:100%}
  .teacher-controls{grid-template-columns:1fr;align-items:stretch;padding:17px}
  .teacher-refresh{justify-self:start}
  .teacher-session-summary{align-items:flex-start;flex-direction:column;padding:34px 2px 17px}
  .teacher-session-summary h2{font-size:28px}
  .teacher-question-grid{grid-template-columns:1fr}
  .teacher-question{min-height:180px;padding:20px;border-radius:21px}
  .teacher-question h3{font-size:19px}
  .software-prep{margin-top:12px;padding:22px 20px;grid-template-columns:52px minmax(0,1fr);gap:14px;border-radius:23px}
  .software-prep-icon{width:52px;height:52px;border-radius:17px}
  .software-prep-copy h2{font-size:21px}
  .software-prep-copy p{font-size:12px}
  .software-prep-actions{grid-column:1/-1;margin-top:4px}
  .software-prep-action{min-height:58px}
  .public-shell{
    width:calc(100% - 24px);
    padding-top:max(12px,env(safe-area-inset-top));
  }
  .home-hero{
    min-height:300px;
    padding:29px 27px;
    border-radius:28px;
    align-items:center;
  }
  .hero-glow{width:270px;height:270px}
  .hero-glow-blue{top:-150px;right:-75px}
  .hero-glow-violet{right:75px;bottom:-220px}
  .home-hero h1{
    gap:.16em;
    margin-bottom:14px;
    font-size:clamp(45px,15vw,62px);
    white-space:nowrap;
  }
  .home-hero p{font-size:16px}
  .home-hero .hero-stat{
    top:auto;
    right:22px;
    bottom:22px;
    min-width:66px;
    padding:11px 13px;
    border-radius:18px;
  }
  .home-hero .hero-stat strong{font-size:25px}
  .public-shell .section-head{
    margin:38px 2px 16px;
    flex-direction:row;
    align-items:end;
    gap:14px;
  }
  .public-shell .section-head h2{font-size:28px}
  .public-shell .section-head p{font-size:12px;text-align:right}
  .public-shell .course-grid{gap:12px}
  .public-shell .course-card{min-height:230px;padding:21px;border-radius:22px}
  .public-shell .course-card h3{font-size:21px}
  .public-shell .course-card p{-webkit-line-clamp:2}
  .public-shell .course-meta{gap:7px;font-size:11px}
  .public-shell .course-meta span+span:before{padding-right:7px}
  .course-arrow{width:36px;height:36px}
  .public-shell .back-link{min-height:42px;margin-left:2px}
  .public-shell .session-hero{
    min-height:330px;
    padding:77px 25px 27px;
    border-radius:28px;
    align-items:flex-end;
  }
  .public-shell .session-copy{width:100%;max-width:none}
  .public-shell .session-time{gap:5px;font-size:12px;flex-wrap:wrap}
  .public-shell .session-time span+span:before{padding-right:5px}
  .public-shell .session-hero h1{font-size:clamp(36px,11vw,48px)}
  .public-shell .session-hero .session-content{font-size:14px;line-height:1.65}
  .public-shell .hero-live,
  .public-shell .hero-closed{left:22px;right:auto;top:21px}
  .public-shell .tabs{width:100%;margin:14px auto;padding:5px}
  .replay-card{min-height:80px;margin-top:12px;padding:13px 14px;border-radius:19px}
  .replay-icon{width:46px;height:46px;border-radius:15px}
  .public-shell .tab{width:auto;padding:0 10px}
  .public-shell .form-card,
  .public-shell .question-form,
  .public-shell .success-card,
  .public-shell .locked-card{
    margin-top:12px;
    padding:23px 20px;
    border-radius:23px;
  }
  .public-shell .form-title h2,
  .public-shell .success-card h2,
  .public-shell .locked-card h2{font-size:26px}
  .public-shell .form-title p{margin-bottom:23px}
  .public-shell .photo-upload{margin-top:16px;padding:19px 16px;border-radius:18px}
  .photo-guidance{font-size:10.5px}
  .public-shell .photo-upload img{max-height:230px}
  .public-shell .success-card{align-items:flex-start;gap:15px}
  .public-shell .success-orbit{width:50px;height:50px;font-size:21px}
  .public-shell .question-list-head{
    margin:36px 2px 15px;
    align-items:flex-start;
    flex-direction:column;
    gap:7px;
  }
  .public-shell .question-list-head h2{font-size:26px}
  .public-shell .question-list-head p{text-align:left}
  .public-shell .question-item{padding:17px;grid-template-columns:minmax(0,1fr) auto;gap:10px}
  .public-shell .like-button{min-width:58px;min-height:46px}
}

/* Learner pre-class guide and the one-time entry gate. */
.public-access-links .attention-link{color:#064fba;background:rgba(255,255,255,.62);box-shadow:inset 0 0 0 1px rgba(0,113,227,.14)}
.attention-gate[hidden]{display:none}
.attention-gate{position:fixed;z-index:1000;inset:0;display:grid;place-items:center;padding:22px;background:rgba(16,28,48,.54);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px)}
.attention-gate-open{overflow:hidden}
.attention-dialog{width:min(100%,520px);padding:42px;text-align:center;border-radius:30px;background:rgba(249,252,255,.96);box-shadow:0 30px 90px rgba(9,28,58,.28)}
.attention-dialog-icon{width:58px;height:58px;margin:0 auto 18px;display:grid;place-items:center;border-radius:19px;background:linear-gradient(145deg,#0975ef,#715cff);color:white;font-size:30px;font-weight:800;box-shadow:0 14px 30px rgba(32,103,232,.28)}
.attention-dialog h2{margin:8px 0 12px;font-size:clamp(25px,5vw,34px);letter-spacing:-.04em}
.attention-dialog>p:not(.eyebrow){margin:0 auto 24px;max-width:420px;color:#59677b;line-height:1.75}
.attention-dialog .primary-btn{display:flex;margin:0 auto 14px;text-decoration:none}
.attention-dialog>small{color:#8792a3}

.before-class-shell{padding-bottom:90px}
.before-class-hero{margin:18px 0 26px;padding:46px 48px;display:flex;align-items:center;justify-content:space-between;gap:30px;overflow:hidden;background:linear-gradient(135deg,rgba(255,255,255,.88),rgba(231,243,255,.74))}
.before-class-hero h1{margin:8px 0 12px;font-size:clamp(38px,6vw,64px);letter-spacing:-.055em}
.before-class-hero p{margin:0;max-width:700px;color:#526175;font-size:17px;line-height:1.75}
.before-class-date{min-width:190px;padding:24px;display:flex;flex-direction:column;gap:5px;border-radius:22px;background:#112544;color:white;box-shadow:0 20px 45px rgba(17,37,68,.18)}
.before-class-date small{color:#a9bddc}.before-class-date strong{font-size:25px}.before-class-date span{font-size:13px;color:#d6e3f5}
.notice-checklist{padding:36px 40px;margin-bottom:52px}
.before-class-shell .section-heading{margin:0 0 24px}
.ready-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.ready-grid article{display:flex;gap:16px;padding:22px;border:1px solid rgba(27,71,128,.09);border-radius:20px;background:rgba(255,255,255,.52)}
.ready-grid article>b{flex:0 0 38px;height:38px;display:grid;place-items:center;border-radius:12px;background:#e8f2ff;color:#086ad8;font-size:12px}
.ready-grid h3{margin:2px 0 7px;font-size:17px}.ready-grid p{margin:0;color:#5b6879;line-height:1.68;font-size:14px}.ready-grid p strong{color:#102846}
.guide-section{display:grid;gap:22px}.guide-section>.section-heading{margin-bottom:0}
.guide-step{padding:38px 42px;display:grid;grid-template-columns:minmax(280px,.82fr) minmax(420px,1.18fr);gap:52px;align-items:center;overflow:hidden}
.guide-step.reverse .guide-copy{order:2}.guide-step.reverse .guide-shot{order:1}
.step-no{width:42px;height:42px;display:grid;place-items:center;border-radius:14px;background:linear-gradient(145deg,#0777ef,#6d5ff0);color:white;font-weight:800;box-shadow:0 11px 25px rgba(34,103,226,.22)}
.guide-copy h3{margin:18px 0 10px;font-size:clamp(24px,3vw,32px);letter-spacing:-.035em}.guide-copy>p{margin:0;color:#526175;line-height:1.75}.guide-copy ul{margin:18px 0 0;padding-left:20px;color:#687589;font-size:14px;line-height:1.8}
.guide-shot{margin:0;min-width:0}.guide-shot figcaption{margin-top:10px;text-align:center;color:#8a96a6;font-size:12px}
.shot-browser,.shot-phone{position:relative;margin:auto;background:#f9fbfe;border:1px solid rgba(23,51,88,.12);box-shadow:0 24px 55px rgba(25,55,92,.16)}
.shot-browser{width:100%;aspect-ratio:1.62;border-radius:18px;overflow:hidden}.shot-toolbar{height:34px;padding:0 12px;display:flex;align-items:center;gap:6px;background:#eaf0f7}.shot-toolbar i{width:7px;height:7px;border-radius:50%;background:#b6c1ce}.shot-toolbar span{margin-left:8px;color:#8090a4;font-size:10px}
.shot-home{padding:7% 8%;height:100%;background:radial-gradient(circle at 85% 0,#d9ecff 0,transparent 36%),#f7faff}.shot-home>small{color:#4381d2;font-weight:700}.shot-home h4{margin:5px 0 12px;font-size:21px}.shot-course{position:relative;padding:17px 18px;display:grid;gap:7px;border-radius:15px;background:white;box-shadow:0 10px 25px rgba(29,66,111,.1)}.shot-course span{color:#68788d;font-size:10px}.shot-course b{font-size:15px}.shot-course em{position:absolute;right:14px;top:14px;color:#0b8f61;font-size:10px;font-style:normal}.shot-course strong{color:#0871e5;font-size:11px}
.shot-phone{width:min(100%,270px);min-height:430px;padding:28px 17px 18px;border-radius:34px;border:7px solid #1d2a3b}.phone-speaker{position:absolute;top:8px;left:50%;width:58px;height:5px;transform:translateX(-50%);border-radius:99px;background:#384657}.shot-tabs{display:grid;grid-template-columns:1fr 1fr;margin:8px 0 16px;padding:4px;border-radius:10px;background:#eaf0f7;text-align:center;font-size:12px}.shot-tabs span,.shot-tabs b{padding:8px}.shot-tabs b{border-radius:8px;background:white;color:#0871e5;box-shadow:0 2px 7px rgba(28,55,88,.1)}
.shot-fields{display:grid;grid-template-columns:1fr 1fr;gap:7px}.shot-fields span{padding:9px 7px;border:1px solid #dbe3ec;border-radius:8px;color:#526175;font-size:9px}
.shot-camera{margin-top:9px;padding:10px;border:1px dashed #9bb6d6;border-radius:12px;text-align:center}.shot-camera>b{display:block;margin-top:8px;color:#2471c8;font-size:10px}.camera-frame{position:relative;height:180px;display:grid;place-content:center;border-radius:9px;background:linear-gradient(165deg,#d7e1ec,#93a8c1);color:white;overflow:hidden}.camera-frame:before{content:"";position:absolute;left:18%;right:18%;bottom:25%;height:42%;background:linear-gradient(#304968 5%,#f2f5f8 5% 12%,#7e96ad 12% 15%,#e5ebf1 15%);border-radius:4px}.camera-frame strong,.camera-frame small{position:relative;z-index:1;text-shadow:0 1px 5px #13263d}.camera-frame strong{font-size:18px}.camera-frame small{margin-top:5px;font-size:9px;line-height:1.45}.camera-corner{position:absolute;width:22px;height:22px;border-color:#ffee67;border-style:solid;z-index:2}.camera-corner.a{left:9px;top:9px;border-width:3px 0 0 3px}.camera-corner.b{right:9px;top:9px;border-width:3px 3px 0 0}.camera-corner.c{left:9px;bottom:9px;border-width:0 0 3px 3px}.camera-corner.d{right:9px;bottom:9px;border-width:0 3px 3px 0}
.shot-submit{margin-top:13px;padding:11px;border-radius:9px;background:linear-gradient(90deg,#0877eb,#635ee8);color:white;text-align:center;font-size:11px;font-weight:700}.shot-pointer{position:absolute;z-index:4;padding:7px 10px;border-radius:9px;background:#ffed62;color:#26354a;font-size:10px;font-weight:800;box-shadow:0 8px 18px rgba(40,55,74,.2);white-space:nowrap}.shot-pointer i{position:absolute;width:52px;height:2px;background:#ffdf22;transform-origin:right center}.shot-pointer i:after{content:"";position:absolute;left:-1px;top:-3px;width:7px;height:7px;border-left:2px solid #ffdf22;border-bottom:2px solid #ffdf22;transform:rotate(45deg)}.pointer-course{right:9%;bottom:10%}.pointer-course i{right:88%;top:2px;transform:rotate(-33deg)}.pointer-camera{right:-42px;top:45%}.pointer-camera i{right:90%;top:48%;transform:rotate(-8deg)}.pointer-submit{right:-43px;bottom:52px}.pointer-submit i{right:90%;top:48%;transform:rotate(-10deg)}.pointer-question{right:-44px;bottom:58px}.pointer-question i{right:90%;top:48%;transform:rotate(-9deg)}
.photo-preview{margin-top:8px}.photo-preview>span{display:block;margin-bottom:6px;color:#607086;font-size:10px}.preview-board{height:235px;padding-top:65px;border-radius:12px;background:linear-gradient(145deg,#1e3e64,#607d9f);color:white;text-align:center;font-size:34px}.preview-board small{font-size:10px}.success-toast{margin-top:12px;padding:9px;border-radius:9px;background:#e6f8ef;color:#08734d;text-align:center;font-size:9px}.anonymous-row{padding:12px;display:flex;justify-content:space-between;background:#eef3f8;border-radius:10px;font-size:11px}.anonymous-row i{width:29px;height:17px;border-radius:10px;background:#1685ee}.anonymous-row i:after{content:"";display:block;width:13px;height:13px;margin:2px 2px 2px auto;border-radius:50%;background:white}.question-box{height:145px;margin-top:12px;padding:12px;border:1px solid #d9e1ea;border-radius:10px;color:#9ba6b4;font-size:10px}
.attention-summary{margin-top:40px;padding:38px 42px;display:grid;grid-template-columns:.75fr 1.4fr auto;gap:32px;align-items:center}.attention-summary h2{margin:8px 0 0}.attention-summary ol{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:0;padding:0;list-style:none}.attention-summary li{display:grid;gap:4px}.attention-summary li b{font-size:14px}.attention-summary li span{color:#69778a;font-size:12px;line-height:1.5}.attention-summary .primary-btn{text-decoration:none;white-space:nowrap}
.real-guide-figure{width:min(100%,390px);justify-self:center}.real-guide-figure.wide{width:min(100%,520px)}
.real-guide-shot{position:relative;width:100%;overflow:hidden;border:1px solid rgba(23,51,88,.12);border-radius:22px;background:#f7faff;box-shadow:0 24px 55px rgba(25,55,92,.16)}
.real-guide-shot img{display:block;width:100%;height:auto}
.real-shot-pointer{position:absolute;z-index:3;padding:8px 11px;border-radius:9px;background:#ffed62;color:#26354a;font-size:11px;font-weight:800;box-shadow:0 8px 18px rgba(40,55,74,.24);white-space:nowrap}
.real-shot-pointer:before{content:"";position:absolute;right:100%;top:50%;width:56px;height:3px;background:#ffd91f;transform-origin:right center}
.real-shot-pointer:after{content:"";position:absolute;width:9px;height:9px;border-left:3px solid #ffd91f;border-bottom:3px solid #ffd91f;transform:rotate(45deg)}
.real-pointer-course{right:4%;bottom:10%}.real-pointer-course:before{transform:rotate(-18deg)}.real-pointer-course:after{right:calc(100% + 51px);top:-5px}
.real-pointer-camera{right:4%;top:58%}.real-pointer-camera:before{transform:rotate(8deg)}.real-pointer-camera:after{right:calc(100% + 51px);top:19px}
.real-pointer-submit{right:4%;bottom:3.5%}.real-pointer-submit:before{transform:rotate(-4deg)}.real-pointer-submit:after{right:calc(100% + 51px);top:6px}
.real-pointer-question{right:4%;top:50%}.real-pointer-question:before{transform:rotate(-7deg)}.real-pointer-question:after{right:calc(100% + 51px);top:3px}
.real-lens-frame{position:absolute;z-index:2;left:6%;right:6%;top:44%;height:35%;display:grid;place-content:center;padding:10px;border:4px solid #ffdc28;border-radius:18px;color:#172c49;text-align:center;background:rgba(255,237,98,.10);box-shadow:0 0 0 999px rgba(13,31,56,.08),inset 0 0 0 2px rgba(255,255,255,.75)}
.real-lens-frame b{font-size:18px;text-shadow:0 1px 2px white}.real-lens-frame small{margin-top:5px;padding:4px 7px;border-radius:7px;background:#ffed62;font-size:10px;font-weight:700}
@media(max-width:900px){.guide-step,.guide-step.reverse{grid-template-columns:1fr;gap:28px}.guide-step.reverse .guide-copy,.guide-step.reverse .guide-shot{order:initial}.attention-summary{grid-template-columns:1fr}.attention-summary ol{grid-template-columns:repeat(3,1fr)}}
@media(max-width:680px){.attention-dialog{padding:32px 22px;border-radius:25px}.before-class-shell{padding-bottom:70px}.before-class-hero{padding:30px 23px;display:grid}.before-class-date{min-width:0}.notice-checklist{padding:27px 20px}.ready-grid{grid-template-columns:1fr}.guide-step{padding:28px 19px}.guide-copy h3{font-size:25px}.shot-phone{width:240px;min-height:410px}.pointer-camera,.pointer-submit,.pointer-question{right:-14px}.attention-summary{padding:28px 21px}.attention-summary ol{grid-template-columns:1fr;gap:15px}.attention-summary .primary-btn{width:100%}}
@media(max-width:350px){
  .public-shell{width:calc(100% - 18px)}
  .home-hero{padding-inline:21px}
  .home-hero h1{font-size:42px}
  .home-hero .hero-stat{right:18px;bottom:18px}
  .public-shell .session-hero{padding-inline:21px}
  .public-shell .form-card,
  .public-shell .question-form{padding-inline:17px}
  .public-shell .question-item{grid-template-columns:1fr}
  .public-shell .like-button{width:100%}
}

/* Direct role entry points */
.public-access-links{position:absolute;z-index:3;top:28px;right:30px;display:flex;gap:8px}
.public-access-links a{min-height:40px;padding:0 15px;border:1px solid rgba(29,29,31,.08);border-radius:999px;display:inline-flex;align-items:center;color:#435a78;background:rgba(255,255,255,.7);backdrop-filter:blur(18px);font-size:12px;font-weight:750;transition:.2s}
.public-access-links a:hover{border-color:rgba(0,113,227,.22);color:#006edc;background:rgba(255,255,255,.92);transform:translateY(-1px)}
.course-teacher-link,.course-replay-link{min-width:0}
.course-teacher-link{min-height:68px;padding:12px 14px;border-radius:18px;display:grid;grid-template-columns:40px minmax(0,1fr) auto;align-items:center;gap:12px;transition:.2s}
.course-teacher-link:hover{border-color:rgba(0,113,227,.2);box-shadow:0 18px 46px rgba(25,69,122,.12);transform:translateY(-2px)}
.course-teacher-icon,.teacher-entry-icon{width:40px;height:40px;border-radius:13px;display:grid;place-items:center;color:#076fd5;background:linear-gradient(145deg,#e6f5ff,#e9e8ff);font-weight:850}
.course-teacher-link>span:nth-child(2){display:grid;min-width:0;gap:2px}
.course-teacher-link strong{font-size:14px}
.course-teacher-link small{overflow:hidden;color:#7a7f88;font-size:11px;text-overflow:ellipsis;white-space:nowrap}
.course-teacher-link b{color:#0071e3;font-size:18px}
.teacher-entry-card{max-width:820px;min-height:86px;margin:18px auto 24px;padding:17px 20px;border-radius:22px;display:grid;grid-template-columns:48px minmax(0,1fr) auto;align-items:center;gap:16px;transition:.2s}
.teacher-entry-card:hover{border-color:rgba(0,113,227,.2);box-shadow:0 22px 55px rgba(25,69,122,.13);transform:translateY(-2px)}
.teacher-entry-icon{width:48px;height:48px;border-radius:15px;font-size:18px}
.teacher-entry-copy{display:grid;min-width:0;gap:3px}
.teacher-entry-copy .eyebrow{margin:0;font-size:10px}
.teacher-entry-copy strong{font-size:17px}
.teacher-entry-copy small{color:#777b84;font-size:12px}
.teacher-entry-arrow{color:#0071e3;font-size:22px}
.admin-external-links{display:grid;gap:5px;margin-top:auto;padding:14px 5px 8px;border-top:1px solid rgba(103,132,173,.14)}
.admin-external-links a{min-height:34px;padding:0 8px;border-radius:9px;display:flex;align-items:center;justify-content:space-between;color:#61728b;font-size:11px;font-weight:700}
.admin-external-links a:hover{color:#315fc0;background:rgba(255,255,255,.72)}
.admin-nav .admin-external-links+form{margin-top:4px}
.admin-head-actions{display:flex;align-items:center;justify-content:flex-end;gap:10px;flex-wrap:wrap}
.admin-head-actions .btn{min-height:42px;padding:0 15px}
.table-action-link{color:#176acc;font-weight:750;white-space:nowrap}
.admin-course-links{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}
@media(max-width:980px){
  .admin-external-links{display:flex;flex:none;margin:0 8px;padding:0;border:0;white-space:nowrap}
  .admin-external-links a{min-height:40px}
  .admin-external-links a span{margin-left:7px}
}
@media(max-width:680px){
  .public-access-links{top:18px;right:18px;left:18px;justify-content:flex-end}
  .public-access-links a{min-height:36px;padding:0 11px;font-size:11px}
  .home-hero{padding-top:70px}
  .teacher-entry-card{grid-template-columns:44px minmax(0,1fr) auto;padding:15px;gap:12px}
  .teacher-entry-icon{width:44px;height:44px}
  .teacher-entry-copy small{line-height:1.45}
  .admin-head-actions{width:100%;display:grid;grid-template-columns:1fr 1fr}
  .admin-head-actions .primary-link{grid-column:1/-1;text-align:center}
}
@media(prefers-reduced-motion:reduce){
  .public-shell *,
  .public-shell *:before,
  .public-shell *:after{scroll-behavior:auto!important;animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}
}

/* Final-course satisfaction survey */
.public-shell .tabs.has-survey{width:440px;grid-template-columns:repeat(3,1fr)}
.public-shell .survey-form{
  max-width:760px;
  margin:18px auto 0;
  padding:34px;
  border-radius:28px;
}
.public-shell .survey-form fieldset{display:grid;gap:18px;margin:0 0 20px;padding:0;border:0;min-width:0}
.public-shell .survey-form fieldset:disabled{opacity:.62}
.survey-rating-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.public-shell .survey-form select{
  width:100%;
  min-height:50px;
  padding:12px 42px 12px 15px;
  border:1px solid rgba(29,29,31,.11);
  border-radius:13px;
  color:var(--public-ink);
  background:rgba(255,255,255,.78);
  font-size:15px;
}
.public-shell .survey-form select:focus{border-color:rgba(0,113,227,.7);box-shadow:0 0 0 4px rgba(0,113,227,.10);outline:0}

/* Desktop import center: separated file selection and primary action. */
.upload-panel{
  max-width:960px;
  margin:34px 0;
  padding:38px 40px;
  grid-template-columns:80px minmax(260px,1fr) minmax(210px,260px);
  grid-template-areas:
    "icon copy submit"
    "icon picker submit";
  gap:16px 28px;
  place-items:stretch;
  align-items:center;
  text-align:left;
}
.upload-panel .upload-icon{grid-area:icon;align-self:center}
.upload-copy{grid-area:copy;min-width:0}
.upload-copy h2{margin:0 0 7px}
.upload-copy p{margin:0;color:var(--muted);line-height:1.6}
.upload-panel .file-picker{grid-area:picker;display:block;min-width:0;margin:0}
.upload-panel .file-picker input{width:1px;height:1px}
.upload-panel .file-picker span{
  width:100%;min-height:64px;padding:10px 16px;display:flex;flex-direction:column;
  align-items:flex-start;justify-content:center;gap:3px;background:rgba(255,255,255,.46)
}
.upload-panel .file-picker strong{font-size:14px;color:#315fc0}
.upload-panel .file-picker small{display:block;max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--muted);font-size:12px}
.upload-panel .upload-submit{grid-area:submit;width:100%;min-height:58px;align-self:center}
.survey-kpis{grid-template-columns:repeat(auto-fit,minmax(150px,1fr))}
.survey-text{min-width:220px;max-width:360px;white-space:normal;line-height:1.55}
.survey-analysis{margin:22px 0;padding:24px;display:grid;grid-template-columns:minmax(180px,.45fr) minmax(320px,1fr);gap:28px;align-items:start}
.survey-analysis h2{margin:6px 0 0}.survey-distribution{display:grid;gap:12px}.survey-distribution-row{display:grid;grid-template-columns:150px minmax(120px,1fr) 120px;gap:12px;align-items:center;font-size:13px}.survey-distribution-row i{height:10px;border-radius:999px;background:#e7edf7;overflow:hidden}.survey-distribution-row b{display:block;height:100%;border-radius:inherit;background:linear-gradient(90deg,#3979f6,#6b70ed)}.survey-distribution-row strong{text-align:right;color:#465b7d}
.kpi-grid{grid-template-columns:repeat(auto-fit,minmax(175px,1fr))}
.download-actions{display:flex;align-items:center;justify-content:flex-end;flex-wrap:wrap;gap:10px}
.download-row .btn{width:auto}
.quark-link-form{display:grid;gap:10px;margin-top:14px}
.quark-link-form .btn{justify-self:start}
.quark-link-label{display:grid;gap:8px;color:#354b6c;font-weight:650;font-size:14px;margin:0}
@media(max-width:680px){
  .upload-panel{
    margin:24px 0;padding:28px 20px;grid-template-columns:1fr;
    grid-template-areas:"icon" "copy" "picker" "submit";gap:18px;text-align:center
  }
  .upload-panel .upload-icon{justify-self:center}
  .upload-panel .file-picker span{align-items:center;text-align:center}
  .upload-panel .upload-submit{min-height:52px}
  .public-shell .tabs.has-survey{width:100%;grid-template-columns:repeat(3,1fr)}
  .public-shell .survey-form{margin-top:12px;padding:23px 20px;border-radius:23px}
  .survey-rating-grid{grid-template-columns:1fr;gap:12px}
  .survey-analysis{grid-template-columns:1fr;padding:20px}.survey-distribution-row{grid-template-columns:120px 1fr}.survey-distribution-row strong{grid-column:2;text-align:left}
}

.teacher-reply{margin-top:14px;padding:14px 14px 10px;border-radius:14px;display:grid;gap:10px;background:rgba(246,250,255,.64);border:1px solid var(--line)}
.teacher-reply-heading{margin:0;color:#4e5d73;font-size:12px;font-weight:750;letter-spacing:.01em}
.teacher-reply-text{margin:0;white-space:pre-wrap;color:#273248;line-height:1.6}
.teacher-question .teacher-reply{margin-top:12px}
.teacher-question .teacher-reply .question-image{max-height:240px}
.teacher-reply-form{display:grid;gap:10px}
.teacher-reply-form textarea{min-height:84px}
.teacher-reply-form .question-image-picker{margin:0}
.teacher-reply-form .question-image-picker.has-image img{display:block;max-height:220px}
.teacher-reply-form .teacher-reply-submit{width:auto;justify-self:start;min-height:38px}
.teacher-reply-feedback{margin:4px 0 0;min-height:16px}