:root{color-scheme:dark;--bg:#080e1e;--panel:#111a31;--muted:#919db8;--text:#eff3ff;--line:#222e49;--blue:#496bff;--teal:#51d9c0;font-family:Inter,"Segoe UI",Arial,sans-serif}*{box-sizing:border-box}body{margin:0;background:radial-gradient(ellipse at 80% 0,#14234466,transparent 45%),var(--bg);color:var(--text);font-size:14px}button,input,select{font:inherit}button,a,input,select{-webkit-tap-highlight-color:transparent}button{cursor:pointer;color:inherit;border:0}button:disabled{cursor:default;opacity:.55}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid #75d9ff;outline-offset:4px}button{transition:background .16s,transform .16s}button:hover:not(:disabled){filter:brightness(1.14)}button:active:not(:disabled){transform:translateY(1px)}a{color:inherit;text-decoration:none}h1,h2,h3,p{margin-top:0}h1{font-size:29px;letter-spacing:-.7px;margin-bottom:9px}h2{font-size:18px;letter-spacing:-.3px}h3{font-size:15px;line-height:1.5}p{line-height:1.7;color:var(--muted)}small{color:var(--muted)}.sidebar{position:fixed;inset:0 auto 0 0;width:218px;background:#0c1326;border-right:1px solid var(--line);padding:27px 18px;display:flex;flex-direction:column;z-index:30}.brand{display:flex;flex-direction:column;align-items:center;text-align:center}.brand img{width:73px;height:73px}.brand strong{font-size:25px;letter-spacing:-1px}.brand strong span{color:#78b4ff}.brand small{font-size:10px;line-height:1.5;max-width:145px;margin-top:8px}.sidebar nav{display:grid;gap:8px;margin-top:38px}.nav-item{background:transparent;color:#9eacc9;text-align:left;display:flex;align-items:center;gap:15px;padding:13px 16px;border-radius:10px;font-size:13px}.nav-item>span{font-size:21px;width:24px;text-align:center}.nav-item.active{background:linear-gradient(110deg,#325dff,#2344ba);color:white;box-shadow:0 5px 22px #244bff26}.sidebar-bottom{margin-top:auto;padding:20px 12px 0;text-align:center;font-size:10px;color:#7c8baa}.sidebar-bottom strong{display:block;color:#c8d7f7;font-size:13px;margin:12px 0 6px}.sidebar-bottom p{font-size:11px}.free-icon{width:44px;height:44px;margin:auto;border:1px solid #29417b;border-radius:14px;display:grid;place-items:center;color:#69bdff;font-size:29px;background:#14254b}.status-dot{display:inline-block;width:5px;height:5px;border-radius:50%;background:var(--teal);margin-right:5px}.workspace{margin-left:218px}.topbar{height:79px;border-bottom:1px solid #202b4366;display:flex;align-items:center;gap:22px;padding:0 35px}.search{display:flex;align-items:center;gap:12px;background:#131d34;border:1px solid #202d49;border-radius:9px;width:360px;padding:0 13px}.search span{font-size:25px;color:#8da1ca}.search input{border:0;background:transparent;width:100%;padding:10px 0;outline:none}.search:focus-within{border-color:#71bbff}.free-label{margin-left:auto;color:#a6b4cd;font-size:11px;white-space:nowrap}.free-label i{display:inline-block;background:var(--teal);width:6px;height:6px;border-radius:50%;margin-right:8px}.topbar select{background:transparent;border:1px solid var(--line);border-radius:7px;padding:7px;font-size:11px}.profile{background:none;display:flex;align-items:center;gap:9px;max-width:150px}.profile span{border-radius:50%;width:33px;height:33px;display:grid;place-items:center;background:linear-gradient(135deg,#99c3d9,#364b72);color:#09152b;font-weight:bold}.profile b{font-size:12px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.menu-button{display:none}main{padding:30px 35px;max-width:1550px;margin:auto;min-height:calc(100vh - 150px)}.page-heading{display:flex;align-items:center;justify-content:space-between;margin-bottom:25px}.page-heading .eyebrow{font-size:9px;letter-spacing:1.5px;color:#8999b6;display:block;margin-bottom:10px}.page-heading p{font-size:12px;margin-bottom:0}.tiny-dot{margin:0 6px;color:#4f78d3}.wave{font-size:23px;color:#79a5ff}.date-label{color:#7e8dab;font-size:12px}.dashboard-grid{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:23px}.main-column,.right-column{min-width:0}.hero{min-height:281px;border:1px solid #4465bd;border-radius:17px;padding:30px;position:relative;overflow:hidden;background:radial-gradient(ellipse at 75% 10%,#3378c7,transparent 65%),linear-gradient(115deg,#173b9a,#152b62 60%,#1b4482)}.hero:after{content:'';position:absolute;inset:auto -20px -100px 40%;height:230px;border-radius:50%;border:1px solid #8db5ff30;transform:rotate(-20deg)}.hero-copy{position:relative;z-index:2;max-width:70%}.eyebrow{font-size:9px;letter-spacing:1.5px;font-weight:600;color:#a9c4ff}.hero h2{font-size:34px;line-height:1.15;letter-spacing:-1px;margin:17px 0 13px;white-space:nowrap}.hero p{font-size:12px;line-height:1.75;max-width:330px;color:#c3d4f9}.primary,.light,.subtle,.danger{padding:11px 17px;border-radius:8px;font-size:12px;font-weight:600;display:inline-flex;align-items:center;justify-content:center;gap:15px}.primary{background:#4264f5;color:#fff}.light{background:#f4f8ff;color:#1743a4;box-shadow:0 4px 12px #0d245666}.subtle{background:#202d4b;color:#c7d8ff}.danger{background:#3d2030;color:#ffadbd}.hero-art{position:absolute;right:-5px;top:25px;width:240px;height:240px;transform:rotate(-10deg)}.hero-art img{width:160px;position:absolute;left:47px;top:35px;filter:drop-shadow(0 15px 18px #03153999)}.orb{position:absolute;width:190px;height:190px;border:1px solid #97e2ff40;border-radius:50%;left:25px;top:15px;background:radial-gradient(circle at 30% 20%,#95dfff44,#477eff16 50%,#9eceff33);box-shadow:inset 0 0 30px #6dd9ff22,0 0 50px #1ccaff15}.rings{position:absolute;width:250px;height:87px;border:2px solid #5ad5ff88;border-radius:50%;transform:rotate(-23deg);top:95px;left:-4px;box-shadow:0 2px 10px #6deaff33}.art-star{position:absolute;color:#b4edff;font-size:37px;right:22px;top:10px}.art-label{position:absolute;bottom:6px;left:32px;font-size:7px;letter-spacing:2px;color:#a8c9ff}.section-heading{display:flex;justify-content:space-between;align-items:center;gap:10px;margin:27px 0 14px}.section-heading h2{margin:0}.text-button{background:none;color:#9dadff;font-size:11px;padding:6px 0}.course-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.course{min-height:145px;padding:18px;text-align:left;border:1px solid #ffffff12;border-radius:12px;position:relative;overflow:hidden}.blue{background:linear-gradient(130deg,#1b4b9e,#172c63)}.purple{background:linear-gradient(130deg,#5935a3,#2c225d)}.teal{background:linear-gradient(130deg,#187567,#16404b)}.subject-icon{font-size:34px;line-height:1;font-family:Georgia,serif;display:block;color:#d5edff;text-shadow:0 0 12px #ffffff40;margin-bottom:18px}.course-info strong{font-size:12px;display:block}.course-info small{font-size:9px;color:#c3cfe5;display:block;margin-top:9px}.arrow{position:absolute;right:15px;top:17px;color:#bfd1f9;font-size:18px}.panel,.lesson-row{background:linear-gradient(125deg,#141e35,#10182d);border:1px solid #23304c;border-radius:12px;padding:20px}.lesson-row{display:flex;align-items:center;gap:15px;margin-bottom:12px}.lesson-row>div{flex:1;min-width:0}.lesson-row h3{margin:5px 0 0;font-size:13px}.lesson-row small{font-size:10px}.mini-icon{width:45px;height:45px;border-radius:11px;display:grid;place-items:center;font-size:24px;flex-shrink:0}.result-row{display:flex;align-items:center;gap:12px;padding:10px 0}.result-row+.result-row{border-top:1px solid var(--line)}.result-row>div{flex:1}.result-row strong{font-size:12px}.result-row small{display:block;margin-top:6px;font-size:10px}.result-row>b{font-size:12px;color:#6ee4bf;background:#1a3d3a;padding:5px 8px;border-radius:6px}.check{background:#244b48;color:#75ebcc;font-size:21px;border-radius:50%;height:32px;width:32px;display:grid;place-items:center}.empty{font-size:13px;padding:10px 0;margin-bottom:8px}.right-column{display:grid;align-content:start;gap:18px}.journey h2{font-size:14px}.ring{width:140px;height:140px;border-radius:50%;margin:25px auto 20px;background:conic-gradient(#62cfff var(--progress),#2b375c 0);padding:8px;transform:rotate(-30deg)}.ring>div{background:#121c33;border-radius:50%;height:100%;display:flex;align-items:center;justify-content:center;flex-direction:column;transform:rotate(30deg)}.ring strong{font-size:32px}.ring span{font-size:10px;color:#8e9fc0;margin-top:6px}.journey>p{text-align:center;font-size:11px}.stat-line{display:flex;justify-content:space-between;gap:7px;font-size:10px;padding-top:14px}.stat-line b{font-size:11px}.dot{display:inline-block;width:6px;height:6px;border-radius:50%;margin-right:6px}.teal-dot{background:#52d8bb}.blue-dot{background:#6894ff}.tutor-card{border:1px solid #304275;border-radius:13px;padding:18px;background:radial-gradient(ellipse at 50% 35%,#263d8055,transparent 60%),#111a33;overflow:hidden}.tutor-card .section-heading{margin:0}.tutor-card h2{font-size:14px}.badge{font-size:8px;border:1px solid #52659f;color:#afc1ee;letter-spacing:1px;padding:4px 6px;border-radius:4px;vertical-align:middle}.tutor-card h3{text-align:center;font-size:13px;margin-bottom:8px}.tutor-card p{font-size:10px;line-height:1.6;text-align:center}.tutor-card>.primary{width:100%}.robot{position:relative;width:130px;height:147px;margin:17px auto 10px}.robot-head{position:absolute;top:25px;left:23px;width:85px;height:65px;background:linear-gradient(145deg,#eefaff,#6295d4);border-radius:24px;box-shadow:0 10px 20px #020b35,0 0 25px #4c96ff44;border:3px solid #d3e9ff}.robot-head:before{content:'';position:absolute;inset:10px 7px;border-radius:15px;background:#0b1c36}.robot-head i{position:absolute;top:24px;left:22px;width:9px;height:14px;background:#65e8ff;border-radius:7px;box-shadow:0 0 10px #49ddff}.robot-head i+i{left:49px}.robot-head span{position:absolute;width:15px;height:5px;border-bottom:2px solid #64dfff;top:40px;left:32px;border-radius:50%}.antenna{position:absolute;left:64px;top:8px;height:20px;border-left:3px solid #8ac7ff}.antenna:before{content:'';position:absolute;left:-5px;top:-3px;width:8px;height:8px;background:#5fe3ff;border-radius:50%;box-shadow:0 0 15px #4acaff}.robot-body{position:absolute;top:94px;left:40px;width:52px;height:40px;border-radius:16px 16px 22px 22px;background:linear-gradient(140deg,#e7f7ff,#4d81d1);color:#2957a2;text-align:center;font-size:26px}.robot-orbit{position:absolute;bottom:0;left:8px;width:115px;height:13px;border-radius:50%;background:#4183ff22;filter:blur(2px)}.goal h3{font-size:13px;margin-bottom:6px}.goal p{font-size:11px}.goal-icon{float:right;font-size:24px;color:#a0a6ff}.bar{height:6px;border-radius:20px;background:#293450;overflow:hidden}.bar span{height:100%;display:block;background:linear-gradient(90deg,#665bff,#65ccff);border-radius:20px;transition:width .3s}.goal small{display:block;margin-top:10px;text-align:right;font-size:10px}.mission{display:flex;align-items:center;gap:15px;padding:25px 0 0}.mission>span{font-size:31px;color:#6485d1}.mission strong{font-size:12px;color:#b7c6e5}.mission p{font-size:10px;margin:6px 0 0}.mission-spark{margin-left:auto}.muted{font-size:11px;color:var(--muted)}footer{padding:20px 35px;font-size:10px;color:#7383a2;border-top:1px solid #202b4366;display:flex;justify-content:space-between;gap:20px}.tabs{display:flex;flex-wrap:wrap;gap:10px;margin:27px 0}.chip{background:#151f38;border:1px solid #2a3858;padding:9px 13px;border-radius:8px;font-size:12px;color:#aebbd8}.chip.active{background:#2d48a0;border-color:#526ee7;color:white}.reading{max-width:850px;margin:auto}.reading>.text-button{margin-bottom:20px}.lesson-content{padding:35px}.lesson-content h2{font-size:28px;margin:20px 0}.lead{font-size:16px;line-height:1.8}.lesson-content ol{padding-left:23px;color:#c4cfe6;line-height:1.9}.lesson-content li{padding:8px 0 8px 10px}.lesson-content pre{white-space:pre-wrap;overflow-wrap:anywhere;background:#09142b;border:1px solid #2c4473;color:#8acbff;border-radius:10px;padding:20px;line-height:1.8}.actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:25px}.test-intro{max-width:620px;margin:30px auto;text-align:center;padding:40px}.big-icon{display:grid;place-items:center;width:70px;height:70px;background:#223967;color:#8dcfff;font-size:35px;margin:0 auto 22px;border-radius:20px}.test-intro h2{font-size:26px}.test-intro p{line-height:1.9}.test-intro label{display:block;text-align:left;color:#afbfde;font-size:12px;margin-top:25px}.test-intro select{width:100%;margin:10px 0 24px}.test-intro>.primary{width:100%}input,select{background:#0d162b;color:var(--text);border:1px solid #30415f;padding:12px;border-radius:8px}select option{background:#121c32}.quiz{max-width:760px;margin:auto;padding:32px}.quiz-top{display:flex;justify-content:space-between;font-size:12px;margin-bottom:16px;color:#a7b8dc}.quiz h2{font-size:24px;line-height:1.5;margin:30px 0 10px}.answers{display:grid;gap:12px;margin:25px 0}.answer{display:flex;align-items:center;gap:15px;text-align:left;background:#141f37;border:1px solid #2e3d5a;padding:13px;border-radius:9px}.answer>span{width:32px;height:32px;display:grid;place-items:center;border-radius:7px;background:#25324d;color:#a9bcdf}.answer.selected{background:#253967;border-color:#7798ff}.answer.selected>span{background:#4c70e6;color:white}.result-summary{text-align:center;max-width:600px;margin:auto;padding:30px}.result-summary h2{font-size:70px;margin:15px 0}.result-summary h2>span{font-size:30px;color:#8595b5}.section-title{margin:30px 0 15px}.review{margin-bottom:15px}.review p{font-size:13px;margin-bottom:8px}.review.pass{border-left:3px solid #55d6b6}.review.fail{border-left:3px solid #ffbc72}.plan-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:15px}.plan-grid h3{margin:14px 0 20px}.plan-grid .primary,.plan-grid .subtle{font-size:11px}.metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.metrics strong{display:block;font-size:36px;margin-bottom:10px}.metrics span{color:#a5b4d0;font-size:13px}.subject-progress{display:grid;grid-template-columns:1fr auto;gap:15px;margin:15px 0 25px;font-size:13px}.subject-progress .bar{grid-column:1/-1}.chat-panel{max-width:850px;margin:auto;padding:25px}.chat-header{display:flex;gap:15px;border-bottom:1px solid var(--line);padding-bottom:18px}.chat-header h2{margin-bottom:8px}.chat-header p{font-size:12px;margin:0}.messages{height:330px;overflow-y:auto;padding:22px 0;display:flex;align-items:flex-start;flex-direction:column;gap:17px}.message{padding:15px 18px;border-radius:12px;background:#202e4c;max-width:85%;line-height:1.8;font-size:13px;overflow-wrap:anywhere}.message.user{align-self:flex-end;background:#304caa}.message .text-button{font-size:12px}.suggestions{display:flex;gap:8px;flex-wrap:wrap;padding:18px 0}.suggestions .chip{font-size:10px}#chat-form{display:flex;gap:10px}#chat-input{flex:1;min-width:0}.settings-panel{max-width:600px}.settings-panel label{display:block;margin:5px 0 12px}.settings-panel input{width:100%}.settings-panel p{font-size:12px;margin-top:15px}.settings-panel hr{border:0;border-top:1px solid var(--line);margin:30px 0}#save-status{margin-left:12px;font-size:12px;color:#64d7bd}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}.overlay{display:none}
@media(min-width:1500px){.hero-art{right:25px}.hero{min-height:300px}.hero h2{font-size:40px}.course{min-height:160px}}
@media(max-width:1200px){.sidebar{width:190px;padding:24px 13px}.workspace{margin-left:190px}main{padding:25px}.topbar{padding:0 25px;gap:15px}.dashboard-grid{grid-template-columns:minmax(0,1fr) 250px;gap:18px}.hero{padding:25px}.hero h2{font-size:29px}.hero-art{right:-60px;opacity:.55}.hero-copy{max-width:90%}.course{padding:14px}.course-info strong{font-size:11px}.course-info small{font-size:8px}.free-label{display:none}.search{margin-right:auto;width:300px}.lesson-row .subtle{font-size:10px;padding:10px}.plan-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:1000px){.dashboard-grid{grid-template-columns:1fr}.right-column{grid-template-columns:repeat(3,1fr);gap:12px}.journey{padding:16px}.ring{width:115px;height:115px}.journey h2{font-size:12px}.stat-line{font-size:9px}.goal{align-self:start}.hero-art{right:15px;opacity:1}.hero h2{font-size:35px}.hero-copy{max-width:70%}.hero{min-height:280px}.tutor-card{padding:15px}.tutor-card .section-heading{flex-wrap:wrap}.tutor-card p{font-size:9px}.date-label{display:none}.lesson-row .subtle{font-size:11px}}
@media(max-width:760px){.sidebar{transform:translateX(-100%);transition:transform .2s;width:220px}.sidebar.open{transform:translateX(0)}.overlay{display:block;position:fixed;inset:0;background:#0008;z-index:25}.workspace{margin-left:0}.menu-button{display:block;background:none;font-size:23px;padding:5px}.topbar{height:68px;padding:0 16px;gap:12px}.search{width:auto;flex:1;min-width:60px}.search input{font-size:12px}.topbar select{width:65px}.profile{padding:0}.profile b{display:none}.profile span{width:29px;height:29px}main{padding:24px 18px}.page-heading{margin-bottom:22px}h1{font-size:25px}.page-heading p{font-size:11px;max-width:350px}.hero{padding:25px;min-height:280px}.hero h2{font-size:32px}.hero-art{right:-40px;opacity:.5}.hero-copy{max-width:90%}.hero .eyebrow{font-size:8px}.hero p{max-width:290px}.right-column{grid-template-columns:1fr 1fr}.goal{grid-column:1/-1}.course-grid{gap:10px}.course{padding:14px 12px;min-height:145px}.course-info strong{line-height:1.5;font-size:11px}.course-info small{line-height:1.8}.section-heading h2{font-size:17px}.lesson-row{gap:10px;padding:14px;flex-wrap:wrap}.lesson-row .mini-icon{width:38px;height:38px}.lesson-row h3{font-size:12px}.lesson-row>.subtle{margin-left:auto}.lesson-content{padding:22px}.lesson-content h2{font-size:24px}.lead{font-size:14px}.test-intro{padding:25px;margin:0}.quiz{padding:22px}.quiz h2{font-size:20px}.metrics{gap:10px}.metrics .panel{padding:15px}.metrics strong{font-size:27px}.metrics span{font-size:10px}.plan-grid{gap:12px}.plan-grid .panel{padding:15px}.chat-panel{padding:16px}.chat-header p{font-size:10px}.messages{height:300px}.message{max-width:93%}#chat-form .primary{padding:10px;font-size:10px}footer{padding:18px;font-size:9px;flex-wrap:wrap}.brand small{font-size:11px}}
@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}

/* Account management and authenticated learning. */
.auth-top{white-space:nowrap}.topbar .search{flex:1;max-width:360px;min-width:80px}
.sidebar{overflow-y:auto}.sidebar-bottom{padding-top:30px}.hero h2{white-space:normal}
.auth-page{max-width:480px;margin:20px auto}.auth-card{padding:30px}.auth-card h1{font-size:24px;margin:22px 0 12px}
.auth-brand{display:flex;align-items:center;gap:13px;font-size:24px}.auth-brand img{width:50px;height:50px}
fieldset{border:0;margin:0;padding:0;min-width:0}
.auth-card label,.account-form label{display:block;font-size:12px;margin:14px 0 8px;color:#c1cde5}
.auth-card input,.account-form input,.account-form select{width:100%;min-width:0}
.auth-card small,.account-form small{display:block;margin-top:8px;font-size:11px}
.auth-card .primary,.account-form .primary{margin-top:20px}
.auth-card .primary{width:100%}.auth-switch{text-align:center;margin:20px 0 0;font-size:12px}
.form-help{font-size:12px;margin:12px 0}.account-error{padding:13px 16px;border:1px solid #985759;border-radius:8px;background:#3c232d;color:#ffd2cf;font-size:13px;line-height:1.6}
.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px 20px}
.table-scroll{overflow-x:auto}.account-table{width:100%;border-collapse:collapse;text-align:left;font-size:12px}
.account-table th{color:#91a6d3;font-weight:600;padding:12px 10px;border-bottom:1px solid var(--line)}
.account-table td{padding:14px 10px;border-bottom:1px solid #25314a;overflow-wrap:anywhere}
.account-table select{font-size:12px;max-width:180px}.account-table .danger,.account-table .subtle{font-size:11px;padding:9px}
.user-status{font-size:11px;white-space:nowrap}.user-status.active{color:#6bdebc}.user-status.inactive{color:#ffaeac}
.roster-list{padding-left:18px;line-height:2;color:#b4c5e7;font-size:13px}
.student-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.student-card h3{margin:16px 0 6px}.student-card p{font-size:12px;overflow-wrap:anywhere}
.student-card dl{margin-bottom:0;font-size:12px}.student-card dl div{display:flex;justify-content:space-between;gap:12px;margin-top:14px}
.student-card dt{color:#9cacca}.student-card dd{margin:0;font-weight:bold;color:#8ed4ff}
.assignment-row{display:flex;gap:16px;align-items:center;justify-content:space-between;padding:16px 0}
.assignment-row+.assignment-row{border-top:1px solid var(--line)}.assignment-row p{margin:8px 0 0;font-size:12px}
.assignment-row h3{margin:6px 0}.assignment-status{color:#83c9f4;font-size:11px}.assignment-row .badge{line-height:1.6;text-align:center}
.message{white-space:pre-wrap}.chat-header{align-items:flex-start}
@media(max-width:1000px){.student-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.topbar{gap:10px}.topbar .free-label{display:none}.auth-top{padding:9px 10px}}
@media(max-width:760px){.student-grid,.form-grid{grid-template-columns:1fr}.auth-card{padding:23px}.topbar .search{min-width:50px}.topbar .profile{display:none}.topbar{gap:8px}.auth-top{font-size:10px}.assignment-row{align-items:flex-start;flex-wrap:wrap}.account-table td,.account-table th{padding:10px 8px}.hero-copy{max-width:100%}.hero h2{font-size:30px}}