:root{--bg:#f5f7fd;--surface:#fff;--line:#e5eaf4;--line2:#dbe3f1;--ink:#17243f;--sub:#687894;--primary:#635bff;--primary2:#8175ff;--aqua:#10bca3;--gold:#ffbd48;--pink:#ef679a;--shadow:0 9px 30px rgba(28,43,89,.06);--shadow2:0 18px 50px rgba(29,43,93,.13);--radius:21px;--aside:258px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.57 Be Vietnam Pro,Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}button,input,select,textarea{font:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.5}a{text-decoration:none;color:inherit}svg{vertical-align:middle}h1,h2,h3,h4,p{margin-top:0}h1{letter-spacing:-1.3px;font-size:clamp(28px,3.2vw,42px);line-height:1.16}h2{font-size:27px;letter-spacing:-.65px;line-height:1.26}h3{font-size:18px;letter-spacing:-.3px}p{color:var(--sub)}:focus-visible{outline:3px solid #9f99ff!important;outline-offset:2px}.app{display:flex;min-height:100vh}.sidebar{width:var(--aside);position:fixed;inset:0 auto 0 0;background:#fff;border-right:1px solid var(--line);padding:24px 14px 18px;display:flex;flex-direction:column;gap:20px;z-index:30}.brand{display:flex;align-items:center;gap:11px;padding:7px 10px 17px;cursor:pointer}.brand-mark{width:44px;height:44px;display:grid;place-items:center;border-radius:15px;background:linear-gradient(145deg,#8171ff,#5245e8);color:#fff;box-shadow:0 7px 16px #6156ee3d}.brand strong{font-weight:900;font-size:20px;letter-spacing:-.7px}.brand small{display:block;color:#8a96a9;font-size:10px;font-weight:800;letter-spacing:1.2px;margin-top:-3px}.side-scroll{flex:1 1;overflow:auto;scrollbar-width:thin}.group-name{font-size:10px;letter-spacing:1.8px;color:#a0aac0;text-transform:uppercase;font-weight:900;padding:13px 15px 8px}.nav-btn{width:100%;border:0;display:flex;align-items:center;gap:12px;text-align:left;background:transparent;color:#697891;border-radius:12px;padding:11px 13px;font-weight:700;font-size:13px;margin:2px 0;transition:.2s}.nav-btn svg{flex-shrink:0}.nav-btn:hover{background:#f6f7fd;color:#382fc8}.nav-btn.active{background:#efeeff;color:#574ce0}.nav-btn.active:before{content:"";position:absolute;left:0;width:3px;height:23px;border-radius:5px;background:#635bff}.nav-btn .new{font-size:9px;color:#fff;background:#a85ffd;padding:1px 5px;border-radius:5px;margin-left:auto}.side-bottom{background:#f2f5ff;border:1px solid #e5e9fa;padding:12px;border-radius:16px}.side-bottom p{font-size:11px;margin:5px 0 0}.side-bottom strong{font-size:12px}.side-bottom .ico{background:#fff;border-radius:9px;padding:8px;margin-right:6px}.main-wrap{margin-left:var(--aside);flex:1 1;min-width:0}.topbar{height:78px;position:-webkit-sticky;position:sticky;top:0;z-index:20;background:rgba(247,249,255,.91);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);border-bottom:1px solid rgba(225,230,241,.85);justify-content:space-between;padding:0 clamp(20px,3.2vw,46px)}.top-left,.topbar{display:flex;align-items:center;gap:14px}.top-title{font-size:13px;font-weight:800;color:#66758f}.btn.mobile-menu{display:none}.top-right{display:flex;align-items:center;gap:10px}.grade-chip,.role-chip{border:1px solid #e0e6f1;border-radius:12px;display:flex;align-items:center;background:#fff;padding:8px 11px;gap:7px;font-weight:750;font-size:12px;color:#334360}.grade-chip select,.role-chip select{border:0;outline:0;background:none;font-size:12px;font-weight:800;color:#273758;max-width:132px;cursor:pointer}.avatar{display:grid;place-items:center;width:35px;height:35px;border-radius:50%;color:#fff;background:linear-gradient(145deg,#ffa457,#e96b89);font-weight:850;font-size:12px}.demo-tag{font-size:10px;letter-spacing:.5px;font-weight:850;color:#7166d7;background:#ecebff;border:1px solid #dfddff;border-radius:50px;padding:7px 10px}.page{max-width:1520px;margin:0 auto;padding:31px clamp(20px,3.2vw,46px) 70px;animation:rise .28s ease}@keyframes rise{0%{opacity:.5;transform:translateY(9px)}to{opacity:1;transform:none}}.eyebrow{display:inline-flex;gap:6px;align-items:center;text-transform:uppercase;letter-spacing:1.45px;color:#6a64cf;font-size:10px;font-weight:900}.page-head{display:flex;align-items:end;justify-content:space-between;gap:12px;margin-bottom:24px;flex-wrap:wrap}.page-head h1{margin:7px 0 5px}.page-head p{margin:0;max-width:790px}.muted{color:var(--sub)}.small{font-size:12px}.tiny{font-size:10px}.medium{font-size:13px}.b{font-weight:800}.strong{font-weight:900}.row{display:flex;align-items:center;gap:12px}.between{justify-content:space-between}.align-start{align-items:flex-start}.wrap{flex-wrap:wrap}.gap6{gap:6px}.gap8{gap:8px}.gap16{gap:16px}.grow{flex:1 1;min-width:0}.mt8{margin-top:8px}.mt12{margin-top:12px}.mt18{margin-top:18px}.mt24{margin-top:24px}.mb0{margin-bottom:0}.mb10{margin-bottom:10px}.mb18{margin-bottom:18px}.w100{width:100%}.grid{display:grid;grid-gap:18px;gap:18px}.g2{grid-template-columns:repeat(2,minmax(0,1fr))}.g3{grid-template-columns:repeat(3,minmax(0,1fr))}.g4{grid-template-columns:repeat(4,minmax(0,1fr))}.g23{grid-template-columns:minmax(0,1.62fr) minmax(320px,1fr)}.g32{grid-template-columns:minmax(0,1fr) minmax(340px,1.65fr)}.card{border:1px solid var(--line);border-radius:var(--radius);background:#fff;padding:22px;box-shadow:var(--shadow);min-width:0}.card.hover{transition:transform .2s,border-color .2s,box-shadow .2s;cursor:pointer}.card.hover:hover{transform:translateY(-3px);border-color:#d3ceff;box-shadow:var(--shadow2)}.card.pad0{padding:0;overflow:hidden}.card h3{margin-bottom:7px}.card p{font-size:13px}.card-title{font-weight:900;font-size:16px;margin:0}.soft{background:#f8f9fe}.line{height:1px;background:var(--line);margin:16px 0}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;padding:11px 17px;border-radius:12px;background:var(--primary);color:#fff;font-size:12px;line-height:1.2;font-weight:850;white-space:nowrap;transition:.18s}.btn:hover{filter:brightness(.98);transform:translateY(-1px)}.btn.primary{background:linear-gradient(100deg,#6c63ff,#594dee);box-shadow:0 7px 14px rgba(99,91,255,.22)}.btn.dark{background:#162747}.btn.white{background:white;color:#322b98}.btn.outline{background:#fff;border-color:#dfe4f1;color:#344460}.btn.ghost{background:#f3f5fc;border-color:#e6eaf5;color:#4c5a74}.btn.green{background:var(--aqua)}.btn.gold{background:var(--gold);color:#45300b}.btn.sm{padding:8px 11px;border-radius:9px;font-size:11px}.btn.lg{padding:14px 20px;font-size:13px;border-radius:14px}.btn.full{width:100%}.pill{display:inline-flex;gap:5px;align-items:center;background:#f1f0ff;color:#6257d4;border-radius:99px;padding:5px 10px;font-size:10px;font-weight:900}.pill.green{color:#16977f;background:#e3f9f3}.pill.gold{color:#a16c16;background:#fff3db}.pill.pink{color:#c55280;background:#fff0f6}.pill.dark{color:#435675;background:#eef2fa}.pill.white{color:#524bd4;background:#fff}.field{display:flex;flex-direction:column;gap:7px;font-size:12px;font-weight:750;color:#41516c}.field input,.field select,.field textarea,.search{width:100%;border:1px solid #dfe5f0;background:#fff;padding:11px 12px;border-radius:11px;color:#263552;outline:0;min-width:0}.field textarea{min-height:90px;resize:vertical}.field input:focus,.field select:focus,.field textarea:focus,.search:focus{border-color:#8f87ff;box-shadow:0 0 0 3px #efeeff}.tabs{display:flex;flex-wrap:wrap;gap:7px}.tab{border:1px solid #e5e9f2;background:#fff;color:#687690;padding:9px 13px;border-radius:11px;font-size:12px;font-weight:800;cursor:pointer}.tab.active{background:#6258eb;border-color:#6258eb;color:#fff}.stat{border:1px solid var(--line);background:#fff;border-radius:17px;padding:18px 20px}.stat .num{font-weight:950;font-size:28px;line-height:1.1;margin:9px 0 4px;letter-spacing:-1px}.stat .k{font-size:12px;color:#7f8aa0;font-weight:800}.stat small{font-size:11px;color:#14a085}.stat .stat-ico{border-radius:11px;background:#f0eeff;color:#6258eb;padding:9px;display:inline-flex}.stat:nth-child(2) .stat-ico{background:#e5fbf5;color:#15a38b}.stat:nth-child(3) .stat-ico{background:#fff3df;color:#cf922c}.stat:nth-child(4) .stat-ico{background:#ffebf4;color:#d86497}.progress{height:8px;background:#edf0f8;border-radius:99px;overflow:hidden}.progress>span{display:block;height:100%;background:linear-gradient(90deg,#7068fb,#3bcfba);border-radius:99px;transition:width .4s}.icon-tile{width:44px;height:44px;display:grid;place-items:center;border-radius:14px;background:#f0efff;color:#7064e7;font-size:23px;flex-shrink:0}.icon-tile.green{background:#e2f8f2;color:#0b9f86}.icon-tile.gold{background:#fff3d9;color:#d69b21}.icon-tile.pink{background:#ffebf3;color:#ce5794}.empty{text-align:center;color:var(--sub);padding:33px}.toast{position:fixed;z-index:100;bottom:25px;right:25px;max-width:360px;padding:13px 17px;background:#1e3154;color:#fff;border-radius:13px;box-shadow:var(--shadow2);font-size:12px;animation:rise .2s ease}.modal-backdrop{position:fixed;inset:0;background:rgba(16,28,51,.5);-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);z-index:70;display:flex;align-items:center;justify-content:center;padding:20px}.modal{background:#fff;border-radius:24px;max-width:570px;width:100%;max-height:86vh;overflow:auto;padding:25px;box-shadow:var(--shadow2)}.modal-head{display:flex;align-items:start;justify-content:space-between;gap:18px}.x{background:#f1f3f9;border:0;border-radius:10px;padding:6px;color:#71809a}.notice{border:1px solid #e7e1c7;background:#fffaed;color:#795c21;border-radius:13px;font-size:12px;padding:12px 14px}.notice.info{background:#f0f2ff;border-color:#e0e4ff;color:#5b569b}.badge-dot{display:inline-block;background:#15bb99;width:7px;height:7px;border-radius:50%;margin-right:5px}.landing-hero{position:relative;min-height:380px;overflow:hidden;border-radius:29px;background:linear-gradient(115deg,#302b87,#5856d5 52%,#7279f8);color:white;padding:clamp(27px,4.5vw,62px);display:grid;grid-template-columns:1.15fr .85fr;align-items:center;grid-gap:15px;gap:15px;isolation:isolate}.landing-hero:before{content:"";position:absolute;top:-115px;right:-100px;width:520px;height:520px;border-radius:50%;border:1px solid #ffffff30;box-shadow:0 0 0 45px #ffffff07,0 0 0 92px #ffffff06;z-index:-1}.landing-hero h1{font-size:clamp(36px,4vw,57px);margin:17px 0;line-height:1.12}.landing-hero p{color:#e2e0ff;max-width:620px;font-size:15px}.landing-hero .eyebrow{color:#eee9ff}.hero-art{height:300px;position:relative;display:grid;place-items:center}.orb{position:absolute;border-radius:50%;background:#ffffff0d}.orb.o1{width:260px;height:260px;border:1px solid #ffffff25}.orb.o2{width:205px;height:205px;border:1px solid #ffffff50}.robot{width:190px;height:205px;position:relative;filter:drop-shadow(0 24px 24px #19165b70);transform:rotate(-5deg);animation:bob 4s ease-in-out infinite}.robot-head{height:148px;width:174px;position:absolute;top:13px;left:9px;background:linear-gradient(145deg,#bdf4ff,#c6c9ff 65%,#8186ff);border:9px solid #f2fcff;border-radius:52px 52px 61px 61px}.robot-eye{position:absolute;top:61px;left:40px;width:20px;height:29px;border-radius:50%;background:#3442a1;box-shadow:58px 0 #3442a1}.robot-mouth{position:absolute;width:43px;height:19px;border-bottom:7px solid #3847a6;border-radius:0 0 35px 35px;left:61px;top:92px}.robot-body{width:110px;height:62px;border:9px solid #e0f4ff;position:absolute;top:150px;left:40px;background:#8a92f9;border-radius:20px 20px 32px 32px}.robot-ear{position:absolute;top:73px;width:28px;height:45px;background:#7de9e1;border:6px solid #f1fbff;border-radius:14px}.robot-ear.l{left:-5px}.robot-ear.r{right:-5px}.robot-star{position:absolute;top:3px;left:82px;color:#ffe38d;font-size:26px}.hero-float{position:absolute;background:#fff;color:#304169;border-radius:15px;box-shadow:0 10px 28px #1e228459;padding:11px 13px;font-size:11px;font-weight:900}.hero-float.f1{left:0;top:35px;transform:rotate(-7deg)}.hero-float.f2{right:0;bottom:32px;transform:rotate(7deg)}.hero-float.f3{left:12px;bottom:12px;transform:rotate(-5deg);color:#15a38b}@keyframes bob{50%{transform:translateY(-12px) rotate(-2deg)}}.mini-banners{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));grid-gap:16px;gap:16px}.mini-banner{padding:20px 19px;border-radius:20px;min-height:150px;position:relative;overflow:hidden;cursor:pointer;border:1px solid #e8e8f4;background:#fff}.mini-banner:first-child{background:linear-gradient(130deg,#fff9e8,#ffe8bc)}.mini-banner:nth-child(2){background:linear-gradient(130deg,#e9f8ff,#dbebff)}.mini-banner:nth-child(3){background:linear-gradient(130deg,#f1ecff,#e8e5ff)}.mini-banner .big-emo{position:absolute;right:14px;bottom:0;font-size:67px;opacity:.92;transform:rotate(-9deg)}.mini-banner h3{max-width:160px;font-size:17px;margin:5px 0}.mini-banner p{max-width:167px;margin:0;font-size:11px;color:#616d81}.section-label{display:flex;align-items:center;justify-content:space-between;margin:27px 0 13px;gap:14px}.section-label h2{margin:0;font-size:20px}.linkbtn{border:0;background:none;color:#685fea;font-weight:850;font-size:12px;cursor:pointer}.feature{position:relative;min-height:164px}.feature h3{margin:14px 0 5px}.feature p{margin:0;line-height:1.55;font-size:12px}.feature .go{position:absolute;right:20px;top:22px;color:#8b91a1}.level{padding:19px 20px;position:relative;overflow:hidden}.level:hover{border-color:#a8a2fa}.level .emoji{font-size:36px;margin-bottom:8px}.level h3{font-size:18px;margin-bottom:4px}.level p{font-size:12px;margin-bottom:13px}.grade-grid{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));grid-gap:7px;gap:7px}.grade{border:1px solid #dfe3ef;background:white;color:#62718a;border-radius:10px;padding:11px 0;font-size:12px;font-weight:900}.grade.active,.grade:hover{background:#675df0;border-color:#675df0;color:white}.banner{border-radius:24px;padding:25px 29px;background:linear-gradient(115deg,#5652d7,#8588fa);color:white;position:relative;overflow:hidden}.banner p{color:#e9e8ff}.banner.alt{background:linear-gradient(110deg,#0a9f9b,#1acbb0)}.banner.orange{background:linear-gradient(115deg,#d18e3a,#f1ba66)}.banner .glow{position:absolute;border-radius:50%;width:250px;height:250px;right:-40px;top:-130px;border:40px solid #ffffff10}.banner h2{margin:9px 0;font-size:26px}.banner .emoji-right{position:absolute;right:45px;bottom:-20px;font-size:117px;opacity:.9;filter:drop-shadow(0 10px 15px #0002)}.banner .content{max-width:64%;position:relative;z-index:1}.lesson-card{display:flex;gap:14px;align-items:start}.lesson-card .content{flex:1 1}.lesson-card h3{font-size:14px;line-height:1.45;margin:4px 0}.lesson-card p{font-size:11px;margin:0}.lesson-card .index{background:#eff0ff;color:#695feb;padding:9px;border-radius:12px;width:43px;text-align:center;flex-shrink:0;font-weight:900}.lesson-card .card-actions{margin-top:10px}.map-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));grid-gap:15px;gap:15px}.world{background:white;border:1px solid var(--line);padding:24px 19px;border-radius:22px;position:relative;overflow:hidden;cursor:pointer;min-height:220px;transition:.2s}.world:hover{transform:translateY(-3px);box-shadow:var(--shadow2)}.world .graphic{font-size:70px;text-align:center;filter:drop-shadow(0 14px 8px #15184b12)}.world h3{margin:10px 0 5px}.world p{font-size:12px}.world .circle-bg{position:absolute;right:-52px;top:-65px;width:190px;height:190px;border-radius:50%;background:#f1f0ff;z-index:0}.world>*{position:relative}.steps{display:flex;align-items:center;gap:6px;margin:15px 0 22px;overflow-x:auto}.step{white-space:nowrap;flex:1 1;padding:12px;text-align:center;border:1px solid #e1e6f2;border-radius:12px;background:white;color:#76849b;font-size:12px;font-weight:850;min-width:145px;cursor:pointer}.step.active{background:#6157ec;color:white;border-color:#6157ec}.step.done{border-color:#a8e7d8;background:#edfaf6;color:#188b78}.lesson-scene{min-height:340px;position:relative;overflow:hidden;border-radius:21px;padding:30px;background:linear-gradient(130deg,#f7f5ff,#ebf5ff)}.scene-em{font-size:85px;line-height:1.2}.choice{width:100%;border:1px solid #e3e8f2;background:#fff;text-align:left;border-radius:13px;padding:13px 14px;color:#3a4b66;font-size:13px;font-weight:750;display:flex;align-items:center;gap:10px;margin-bottom:9px}.choice:hover{border-color:#a5a0fa;background:#f8f7ff}.choice.selected{background:#eeeaff;border-color:#857af9;color:#4b3fcb}.choice.correct{background:#e6faf3;border-color:#86dcbf;color:#137f67}.choice.wrong{background:#fff1f3;border-color:#efa8b2;color:#ac5362}.feedback{padding:15px;border:1px solid #c5eede;border-radius:13px;background:#edfbf5;color:#206b60;font-size:13px;margin-top:10px}.feedback.warning{background:#fff8e8;border-color:#f4daa4;color:#795b31}.lab-canvas{background:linear-gradient(155deg,#202b59,#3f4990);color:white;padding:26px;border-radius:21px;min-height:330px;position:relative;overflow:hidden}.lab-canvas:before{content:"";position:absolute;inset:0;background-image:radial-gradient(#ffffff20 1px,transparent 0);background-size:19px 19px;opacity:.5}.lab-canvas>*{position:relative}.dataset{display:flex;gap:9px;flex-wrap:wrap;margin:19px 0}.sample{display:grid;place-items:center;border:1px solid #ffffff50;border-radius:11px;width:51px;height:51px;background:#ffffff17;font-size:29px;box-shadow:0 5px 8px #0001}.algo{padding:14px;border:1px dashed #b9bdff9c;border-radius:12px;background:#ffffff14;text-align:center;color:#fff;font-size:12px}.lab-result{justify-content:space-between;background:#fff;padding:16px;border-radius:14px;color:#283959;margin-top:13px}.lab-result,.meter{display:flex;align-items:center}.meter{gap:9px}.meter .bar{width:125px;background:#dee4ef;height:9px;border-radius:20px;overflow:hidden}.meter .bar span{display:block;background:#28c4ab;height:100%}.shield-window{background:#fff;border:1px solid #e3e8f2;border-radius:16px;overflow:hidden}.fake-browser{height:39px;background:#f0f3fa;padding:11px;display:flex;gap:6px;align-items:center}.fake-browser .dot{height:8px;width:8px;background:#d5dce9;border-radius:50%}.message{padding:23px;background:#fffdfa;border-left:4px solid #edbc68;margin:17px;box-shadow:0 6px 15px #473c1110;border-radius:6px 12px 12px 6px;font-size:15px;font-weight:700}.mentor-chat{height:355px;overflow:auto;display:flex;flex-direction:column;gap:12px;padding:18px;background:#f7f8fe;border:1px solid #e6eaf4;border-radius:17px}.bubble{max-width:84%;padding:12px 15px;border-radius:15px 15px 15px 3px;background:#fff;border:1px solid #e7eaf5;font-size:13px;align-self:flex-start}.bubble.user{align-self:flex-end;background:#635bff;color:white;border:0;border-radius:15px 15px 3px 15px}.chat-form{display:flex;gap:8px;margin-top:13px}.chat-form input{flex:1 1;min-width:0;border-radius:12px;border:1px solid #dfe5f0;padding:12px;outline:0}.create-art{min-height:350px;border-radius:19px;background:linear-gradient(155deg,#ffcf84,#ff9a9f 63%,#bdb1ff);display:flex;align-items:center;justify-content:center;text-align:center;padding:25px;position:relative;overflow:hidden}.create-art:before{content:"";position:absolute;inset:30px;border:2px dashed #ffffff80;border-radius:16px}.create-art:after{content:"✦";position:absolute;top:5px;right:15px;color:#fff;font-size:80px}.create-art>div{position:relative;z-index:1;background:#ffffffdc;border-radius:14px;padding:25px;box-shadow:0 15px 25px #581d3640;max-width:85%}.create-art h2{font-size:27px;color:#3b376c;word-break:break-word}.create-art p{color:#595c8b}.portfolio-item{border-radius:15px;border:1px solid #e6eaf5;padding:15px;background:#fff}.medal{border-radius:14px;background:#fff5dd;color:#c38d20;padding:14px;font-size:29px}.tablewrap{overflow-x:auto;border-radius:16px;border:1px solid var(--line)}table{width:100%;border-collapse:collapse;min-width:600px;background:#fff}td,th{text-align:left;border-bottom:1px solid #edf0f6;padding:13px 15px;font-size:12px}th{background:#fafbfe;color:#79869c;text-transform:uppercase;letter-spacing:.4px;font-size:10px;font-weight:900}tr:last-child td{border:0}tr:hover td{background:#fafbff}.mini-graph{height:8px;background:#eaf0fb;border-radius:9px;overflow:hidden;width:130px}.mini-graph span{display:block;height:100%;background:#6760e7;border-radius:9px}.comp-row{display:flex;gap:12px;align-items:center;margin:15px 0}.comp-row label{font-weight:750;font-size:12px;min-width:155px;line-height:1.4}.comp-row .progress{flex:1 1}.comp-row b{font-size:12px;min-width:37px;text-align:right}.flowcard{display:flex;gap:12px;align-items:flex-start;border:1px solid #e6eaf5;background:#fff;padding:16px;border-radius:14px}.flow-num{border-radius:10px;background:#eeedff;color:#6b60df;display:grid;place-items:center;width:32px;height:32px;flex-shrink:0;font-size:13px;font-weight:900}.map-lane{display:flex;flex-wrap:wrap;gap:9px}.lane-node{background:#f2f0ff;color:#6359d6;border:1px solid #e6e2ff;border-radius:12px;padding:10px 12px;font-weight:800;font-size:12px}.arrow{color:#a4acc1;font-size:19px}.checkline{display:flex;align-items:center;gap:9px;color:#61708a;font-size:12px;padding:6px 0}.checkbox{accent-color:#6c63ff;width:16px;height:16px}.footnote{color:#8d99b0;font-size:11px;margin-top:26px}.guide-bubble{background:#fff;box-shadow:var(--shadow2);border:1px solid #dcdcf7;position:fixed;bottom:20px;left:calc(var(--aside) + 20px);z-index:19;max-width:335px;padding:15px;border-radius:16px}.guide-bubble p{margin:4px 0 9px;font-size:11px}.hero-mini{width:100%;height:160px;background:linear-gradient(115deg,#ecefff,#e9fbf7);display:grid;place-items:center;font-size:73px;border-radius:18px;margin-bottom:15px}.hidden{display:none!important}.overlay-mobile{display:none}@media(max-width:1200px){.g4{grid-template-columns:repeat(2,1fr)}.grade-grid{grid-template-columns:repeat(6,1fr)}.g23,.g32{grid-template-columns:1fr}.hero-art{height:250px}.robot{transform:scale(.88)}.landing-hero{grid-template-columns:1.2fr .8fr}}@media(max-width:930px){:root{--aside:0px}.sidebar{transform:translateX(-105%);box-shadow:var(--shadow2);width:260px;transition:transform .25s}.sidebar.open{transform:translateX(0)}.main-wrap{margin-left:0}.btn.mobile-menu{display:inline-flex}.overlay-mobile.on{display:block;position:fixed;inset:0;background:#0006;z-index:25}.guide-bubble{left:20px}.topbar{padding:0 20px}}@media(max-width:680px){.page{padding:22px 16px 70px}.topbar{height:68px;padding:0 13px}.avatar,.demo-tag,.top-title{display:none}.role-chip{padding:7px}.role-chip select{max-width:105px}.grade-chip{padding:7px}.landing-hero{display:block;padding:26px;min-height:0}.landing-hero h1{font-size:36px}.hero-art{display:none}.landing-hero p{font-size:13px}.g2,.g3,.g4,.map-grid,.mini-banners{grid-template-columns:1fr}.card{padding:17px}.banner{padding:21px}.banner .content{max-width:90%}.banner .emoji-right{opacity:.3;right:5px}.page-head h1{font-size:29px}.grade-grid{grid-template-columns:repeat(4,1fr)}.comp-row label{min-width:100px}.btn.lg{padding:12px}.mini-banner{min-height:120px}.hero-mini{height:130px}.steps{margin:10px 0 16px}.step{min-width:125px}.stat .num{font-size:23px}}@media(prefers-reduced-motion:reduce){*,:after,:before{animation:none!important;scroll-behavior:auto!important;transition:none!important}}.public-wrap{min-height:100vh}.public-header{display:flex;justify-content:space-between;align-items:center;gap:16px;background:#fff;border-bottom:1px solid var(--line);padding:14px clamp(16px,4vw,58px)}.public-header .brand{padding:0}.public-inner{max-width:1360px;margin:auto;padding:34px clamp(16px,4vw,48px) 70px}.public-footer{text-align:center;color:#9ca6bb;font-size:11px;padding:25px}.prototype-frame{width:100%;height:78vh;min-height:580px;border:1px solid var(--line);border-radius:20px;background:white}.auth-screen{min-height:100vh;display:grid;grid-template-columns:42% 58%}.auth-aside{background:linear-gradient(145deg,#302b87,#6f6bfa);color:#fff;padding:38px clamp(24px,5vw,70px);display:flex;flex-direction:column;justify-content:space-between}.auth-aside h1{font-size:clamp(32px,4vw,58px)}.auth-aside p{color:#e1deff;max-width:490px}.auth-aside small{color:#c3befa}.auth-brand{color:#fff}.auth-brand small{color:#d5d3ff}.auth-decoration{font-size:90px;letter-spacing:10px;filter:drop-shadow(0 15px 20px #1b1b7460);margin:20px 0}.auth-decoration span{color:#ffda91}.auth-form-wrap{display:flex;justify-content:center;align-items:center;flex-direction:column;gap:18px;padding:30px 25px}.auth-form{width:min(500px,100%);padding:34px}.auth-form h2{margin:17px 0 7px}.auth-form .tabs{gap:5px}.auth-form .tab{font-size:12px;display:flex;align-items:center;gap:5px}.form-stack{display:flex;flex-direction:column;gap:16px}.password-wrap{position:relative}.password-wrap input{padding-right:45px}.pass-toggle{position:absolute;right:9px;top:8px;border:0;background:transparent;color:#7e8aa2}.auth-divider{text-align:center;color:#9faabd;margin:15px 0;font-size:11px}.role-label{font-size:10px;color:#8b97ac;text-transform:uppercase;font-weight:900;letter-spacing:1.4px}.table-wrap{overflow-x:auto}.data-table{width:100%;border-collapse:collapse;min-width:500px;font-size:12px}.data-table td,.data-table th{padding:12px 10px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}.data-table th{background:#f8f9fd;color:#748199;font-size:11px}.actions{display:flex;flex-wrap:wrap;gap:7px}.app-error{background:#ffeff0;color:#9c334c}.app-error,.app-success{padding:12px 15px;border-radius:12px;font-size:12px;margin:12px 0}.app-success{background:#e8f8f2;color:#11886e}.panel-form{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));grid-gap:13px;gap:13px}.panel-form .wide{grid-column:1/-1}.cards-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));grid-gap:15px;gap:15px}.student-game-option{padding:13px 14px;border:1px solid #e2e5f1;border-radius:12px;text-align:left;background:#fff;width:100%;display:flex;align-items:center;gap:10px;transition:.2s;color:#35435b}.student-game-option.picked,.student-game-option:hover{border-color:#7869f5;background:#f1efff}.phase-pill{font-size:11px;font-weight:850;color:#858ea3;padding:10px 12px;border:1px solid #dfe4ee;border-radius:10px;background:#fff;cursor:pointer}.phase-pill.active{color:#fff;background:var(--primary);border-color:var(--primary)}.workspace-control{border:1px solid #e0e6f1;background:#fff;border-radius:10px;padding:8px 10px;max-width:230px;color:#314263;font-weight:700;font-size:12px}.resource-list{display:flex;flex-direction:column;gap:10px}.resource-row{display:flex;align-items:center;justify-content:space-between;gap:12px;border:1px solid var(--line);background:#fff;border-radius:13px;padding:13px}.resource-row strong{font-size:12px}.resource-row small{display:block;color:#8b97ac;font-size:11px}.chat-wrap{height:370px;overflow-y:auto;background:#f7f8fe;border-radius:14px;padding:15px;display:flex;flex-direction:column;gap:12px}.chat-bubble{padding:12px 15px;border-radius:14px;max-width:87%;white-space:pre-wrap;font-size:13px;background:#fff;border:1px solid #e8e9f3}.chat-bubble.mine{margin-left:auto;background:#eae7ff;color:#3f369a}.hero-dashboard{padding:24px 28px;border-radius:24px;background:linear-gradient(105deg,#675edc,#9e9cff);color:white;position:relative;overflow:hidden}.hero-dashboard:after{content:"🤖";font-size:100px;position:absolute;right:36px;bottom:-33px;opacity:.38}.hero-dashboard p{color:#ebebff}.hero-dashboard h2{margin:10px 0}.progress-stat{height:7px;border-radius:99px;background:#edf0f6;overflow:hidden;margin-top:7px}.progress-stat span{height:100%;display:block;background:#8374f9}.code-block{background:#1b2742;color:#d4e9ff;padding:18px;border-radius:12px;overflow:auto;white-space:pre-wrap}.tier-highlight{border:1px solid #8d85f9;background:#f4f3ff}.item-badge{font-size:10px;border-radius:99px;color:#6557cb;background:#f0efff;padding:4px 8px;font-weight:900}.ui-modal{position:fixed;inset:0;background:#1421438a;display:grid;place-items:center;padding:20px;z-index:300}.ui-modal>.card{max-height:90vh;overflow:auto;width:min(680px,100%)}.form-footer{display:flex;justify-content:flex-end;gap:8px;margin-top:16px}.ai-output{white-space:pre-wrap;line-height:1.75;background:#fafaff;border:1px solid #e5e4ff;border-radius:14px;padding:18px;color:#25324f}.dashboard-stat-grid{display:grid;grid-template-columns:repeat(4,1fr);grid-gap:14px;gap:14px}.nav-link{display:flex;align-items:center;gap:11px;padding:11px 13px;border-radius:11px;color:#6b7890;font-weight:750;font-size:12px;margin:2px 0}.nav-link.active,.nav-link:hover{background:#efeeff;color:#574ce0}.nav-link svg{flex-shrink:0}.sidebar{overflow-y:auto}.sidebar .side-scroll{overflow:visible}.form-note{color:#9ba6ba;font-size:11px;margin:0}.stars{font-size:24px;color:#f9bc43;letter-spacing:5px}.pill.red{background:#ffeff0;color:#be4c5b}.code-input{font-family:monospace;letter-spacing:2px}.report-mini{background:#f5f6ff;padding:12px;border-radius:11px;display:flex;justify-content:space-between;font-size:12px}.textarea-lg{min-height:150px!important}.compact-note{font-size:11px;color:#758198;margin-top:9px}.center{text-align:center}@media(max-width:900px){.auth-screen{grid-template-columns:1fr}.auth-aside{min-height:270px;padding:25px}.auth-aside h1{font-size:34px;margin:10px 0}.auth-decoration{display:none}.auth-form-wrap{padding:25px 15px}.sidebar{width:230px}.main-wrap{margin-left:230px}.dashboard-stat-grid{grid-template-columns:repeat(2,1fr)}}@media(max-width:720px){.public-header{flex-direction:column}.public-inner{padding:20px 14px 45px}.main-wrap{margin-left:0}.sidebar{transform:translateX(-105%);transition:.2s;box-shadow:var(--shadow2)}.sidebar.sidebar-open{transform:none}.topbar{padding:10px 14px;height:auto;min-height:66px;flex-wrap:wrap}.mobile-menu{display:inline-flex!important}.page{padding:20px 14px 60px}.cards-list,.dashboard-stat-grid,.panel-form{grid-template-columns:1fr}.public-header .brand{align-self:start}.auth-form{padding:24px 18px}.top-right{flex-wrap:wrap}.workspace-control{max-width:180px}.resource-row{flex-wrap:wrap}}.cover-emoji{height:138px;background:linear-gradient(120deg,#f1efff,#e5f7f4);display:grid;place-items:center;font-size:65px;border-radius:17px;margin-bottom:16px}.big-number{font-size:48px;font-weight:950;margin-bottom:6px}.poster-preview{min-height:360px;border-radius:18px;padding:30px;background:linear-gradient(145deg,#e8eaff,#e6fff4,#fff1df);display:flex;flex-direction:column;justify-content:space-between;white-space:normal}.poster-preview h2{font-size:32px;margin:25px 0}.poster-preview span:last-child{font-size:47px}.student-game-option:disabled{cursor:default}.phase-pill{display:inline-flex;gap:6px;align-items:center}.hero-dashboard .btn{position:relative;z-index:1}.center h2{color:var(--ink)}