:root{--ink:#112649;--muted:#71839e;--line:#dce6f1;--bg:#f3f7fc;--white:#fff;--navy:#071731;--navy2:#102348;--teal:#08ae9b;--teal2:#4de3ce;--blue:#1684d6;--gold:#eeb961;--warn:#d68e42;--red:#d46d71;--green:#1b997e;--radius:21px;--shadow:0 15px 45px rgba(22,52,92,.075);font-family:Tahoma,'Segoe UI',Arial,sans-serif;font-synthesis:none}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);min-height:100vh}button,input,select,textarea{font:inherit}button{cursor:pointer}button:disabled{opacity:.52;cursor:not-allowed}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid #63d3ce;outline-offset:3px}a{text-decoration:none;color:inherit}input,select,textarea{min-height:46px;border:1px solid #d5e0ed;border-radius:12px;background:white;color:var(--ink);padding:11px 14px;width:100%;outline:none}textarea{min-height:90px;resize:vertical}input:focus,select:focus,textarea:focus{border-color:#1e9cae;box-shadow:0 0 0 3px #1e9cae17}label{font-size:13px;font-weight:700;color:#456080;display:block;margin-bottom:7px}p{line-height:1.85}h1,h2,h3,h4{line-height:1.45;letter-spacing:-.4px}h1,h2,h3,p{margin-top:0}.muted{color:var(--muted)}.small{font-size:12px}.text-sm{font-size:13px}.text-lg{font-size:19px}.strong{font-weight:800}.center{text-align:center}.ltr{direction:ltr}.nowrap{white-space:nowrap}.w100{width:100%}.hidden{display:none!important}.mt-8{margin-top:8px}.mt-16{margin-top:16px}.mt-24{margin-top:24px}.mb-16{margin-bottom:16px}.pb-24{padding-bottom:24px}.flex{display:flex}.between{justify-content:space-between}.align-center{align-items:center}.gap8{gap:8px}.gap12{gap:12px}.gap16{gap:16px}.wrap{flex-wrap:wrap}
.initial-loading{display:grid;place-items:center;min-height:100vh}.boot-loader{text-align:center;color:#436480}.spinner{width:38px;height:38px;border:4px solid #d6e6ef;border-top-color:var(--teal);border-radius:50%;animation:spin 1s linear infinite;margin:0 auto 18px}@keyframes spin{to{transform:rotate(360deg)}}
.btn{border:1px solid transparent;border-radius:12px;min-height:44px;padding:10px 17px;display:inline-flex;align-items:center;justify-content:center;gap:9px;font-weight:800;transition:.18s;background:white;color:var(--ink);text-align:center}.btn:hover:not(:disabled){transform:translateY(-1px);filter:brightness(.98)}.btn-primary{background:linear-gradient(110deg,#0bb39d,#1699b6);color:white;box-shadow:0 9px 24px #0ab49d26}.btn-dark{background:#0e2b56;color:white}.btn-white{background:#fff;color:#13315b}.btn-ghost{background:transparent;border-color:#d9e5ef;color:#32516e}.btn-soft{background:#e8f7f5;color:#087d74}.btn-warning{background:#fff4e4;color:#9d641a}.btn-danger{background:#ffebed;color:#ac4b55}.btn-sm{min-height:35px;border-radius:9px;padding:7px 11px;font-size:12px}.btn-lg{min-height:52px;padding:14px 22px}.iconbtn{width:40px;height:40px;padding:0}.btnrow{display:flex;gap:10px;flex-wrap:wrap;align-items:center}.kicker{font-weight:800;letter-spacing:.1px;color:var(--teal);font-size:12px;margin-bottom:10px}.pill{display:inline-flex;align-items:center;gap:6px;border-radius:100px;padding:7px 11px;font-size:12px;font-weight:800;background:#e4f1f8;color:#296079}.pill.green{background:#e5f7ef;color:#0e8b63}.pill.gold{background:#fff1d9;color:#a66d13}.pill.red{background:#ffecef;color:#bd5662}.pill.dark{background:#152b50;color:#e5f7ff}.labelish{font-size:11px;letter-spacing:.2px;font-weight:800;color:#7d8da3}
/* public entrance */
.login-page{min-height:100vh;background:#07162e;color:#fff;position:relative;overflow:hidden}.login-page:before{content:'';position:absolute;inset:-10% -15% auto auto;width:60vw;height:62vw;background:radial-gradient(circle,#14618570 0%,#0b335a20 42%,transparent 67%);pointer-events:none}.login-page:after{content:'';position:absolute;left:-210px;bottom:-280px;width:740px;height:740px;border-radius:50%;background:radial-gradient(circle,#0fbba41c,transparent 65%);pointer-events:none}.login-grid{max-width:1320px;min-height:calc(100vh - 190px);padding:30px 34px 24px;position:relative;z-index:1;margin:auto;display:grid;grid-template-columns:minmax(0,1fr) 445px;gap:55px;align-items:center}.login-top{max-width:1320px;padding:28px 34px 0;margin:auto;position:relative;z-index:1;display:flex;justify-content:space-between;align-items:center}.brand{display:flex;align-items:center;gap:12px;font-weight:900}.brand-mark{width:46px;height:46px;display:grid;place-items:center;border-radius:15px;background:linear-gradient(135deg,#16d2b4,#1a83c9);font-size:28px;color:#071934;box-shadow:0 6px 24px #14ceb42b;font-family:Georgia,serif}.brand-stack{line-height:1.2}.brand-stack b{display:block;font-size:19px}.brand-stack small{font-size:10px;color:#83c9d2;letter-spacing:3px;font-weight:700}.top-support{display:inline-flex;align-items:center;gap:8px;font-size:12px;color:#b3cddd;border:1px solid #39506a;border-radius:50px;padding:9px 15px}.hero-title{font-size:clamp(40px,5vw,73px);line-height:1.35;letter-spacing:-2.3px;margin:14px 0 19px;max-width:730px}.hero-title em{font-style:normal;color:#4addc9}.hero-copy{color:#b5c9dc;font-size:16px;max-width:590px;line-height:2.1}.hero-highlights{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;max-width:680px;margin-top:38px}.highlight{border:1px solid #27486c;background:#ffffff06;border-radius:18px;padding:17px 15px;backdrop-filter:blur(10px)}.highlight b{display:block;font-size:23px;color:#fff}.highlight span{display:block;font-size:11px;color:#9ebbd4;margin-top:7px;line-height:1.6}.auth-card{background:white;color:#142849;border-radius:26px;padding:31px;box-shadow:0 25px 80px #0005;position:relative}.auth-card:before{content:'';height:5px;width:88px;border-radius:5px;background:linear-gradient(90deg,#0ab99f,#1496d9);position:absolute;top:0;right:calc(50% - 44px)}.auth-card h2{font-size:25px;margin-bottom:8px}.auth-card p{font-size:12px;color:#788ba5;margin:0 0 24px}.tabs{display:flex;gap:7px;background:#f1f6fa;padding:5px;border-radius:13px;margin-bottom:22px}.tab{flex:1;border:0;border-radius:9px;color:#6c809d;padding:12px;font-size:13px;font-weight:800;background:transparent}.tab.active{background:#fff;box-shadow:0 3px 13px #17365918;color:#0b827b}.field{margin-bottom:16px}.auth-note{font-size:12px;color:#8798b0;line-height:1.9;margin-top:18px;text-align:center}.login-bottom{max-width:1320px;margin:auto;position:relative;z-index:1;padding:0 34px 25px;display:flex;align-items:end;justify-content:space-between;border-top:1px solid #233d5b;padding-top:19px}.signature{font-size:11px;color:#9cb2c8;line-height:1.8}.signature b{color:#e6f7ff;font-size:12px}.login-decor{position:relative;max-width:610px;margin-top:40px}.mock-panel{background:linear-gradient(135deg,#102d4d,#0d2745);border:1px solid #345477;border-radius:23px;padding:21px;box-shadow:0 15px 80px #0004;transform:rotate(-1.5deg);width:450px;max-width:93%;position:relative}.panel-mini-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:18px}.fake-bars{display:grid;gap:13px}.fake-bars div{height:11px;background:#1a3b5e;border-radius:30px;overflow:hidden}.fake-bars i{display:block;height:100%;border-radius:30px;background:linear-gradient(90deg,#15b3a1,#4ccfea)}.float-card{position:absolute;top:56px;left:-20px;padding:17px 21px;background:#fff;color:#163650;border-radius:16px;box-shadow:0 15px 40px #0006}.float-card strong{font-size:26px;color:#0c9d87}.float-card small{display:block;color:#7b90a3;margin-top:4px}.orb{display:inline-grid;place-items:center;width:32px;height:32px;background:#d8f5ee;color:#0ca183;border-radius:11px;margin-left:7px}
/* shell */
.shell{display:grid;grid-template-columns:270px minmax(0,1fr);min-height:100vh}.sidebar{background:#0b1d3b;color:white;position:sticky;top:0;height:100vh;display:flex;flex-direction:column;padding:28px 20px}.sidebar .brand{padding:0 8px 28px;border-bottom:1px solid #203658}.side-caption{color:#779bbd;font-size:10px;font-weight:800;margin:28px 13px 12px}.navitem{display:flex;gap:12px;align-items:center;border:1px solid transparent;color:#a6bfd7;background:none;border-radius:12px;width:100%;padding:13px 15px;text-align:right;font-weight:700;font-size:13px;margin:3px 0}.navitem .ni{font-size:18px;min-width:20px;text-align:center}.navitem.active{background:linear-gradient(110deg,#174b61,#113e5a);border-color:#2c7790;color:#dffffa}.navitem:hover{background:#ffffff0c;color:white}.sidebar-footer{margin-top:auto;padding:18px 7px 0;border-top:1px solid #234065;font-size:11px;line-height:1.9;color:#8baac7}.sidebar-footer b{color:white;font-size:12px}.workarea{min-width:0}.topbar{height:85px;display:flex;align-items:center;justify-content:space-between;gap:20px;background:#fff;border-bottom:1px solid #e0eaf3;padding:0 38px;position:sticky;top:0;z-index:12}.topbar-title{font-weight:900;font-size:20px}.topbar-sub{font-size:11px;color:#7c91a9;margin-top:5px}.avatar{background:#def6f1;color:#007f75;width:40px;height:40px;display:grid;place-items:center;border-radius:13px;font-weight:900}.topbar-right{display:flex;align-items:center;gap:10px}.main{max-width:1550px;margin:0 auto;padding:30px 38px 60px}.page-head{display:flex;justify-content:space-between;align-items:end;gap:18px;margin-bottom:23px}.page-head h1{font-size:28px;margin:0 0 7px}.page-head p{color:#8495a8;font-size:13px;margin:0}.card{background:white;border:1px solid #e1eaf3;border-radius:20px;box-shadow:var(--shadow);padding:23px}.card.flat{box-shadow:none}.grid2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.grid3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.grid4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}.stat-card{background:white;border-radius:18px;border:1px solid #e1eaf3;padding:21px;box-shadow:var(--shadow);display:flex;align-items:start;justify-content:space-between;gap:10px}.stat-icon{width:46px;height:46px;border-radius:15px;background:#e7f7f6;display:grid;place-items:center;font-size:23px}.stat-card strong{display:block;font-size:30px;margin:4px 0;color:#18395d}.stat-card small{color:#7c90a6;font-size:11px}.section-title{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:0 0 20px}.section-title h2{font-size:18px;margin:0}.section-title a{font-size:12px;color:#0d9f94}.hero-card{border:0;background:linear-gradient(115deg,#112b53,#0e4960 69%,#0a6f74);color:white;padding:29px 32px;border-radius:23px;position:relative;overflow:hidden;box-shadow:0 18px 42px #17315a28}.hero-card:after{content:'';position:absolute;left:-45px;top:-80px;width:300px;height:300px;border-radius:100%;border:45px solid #ffffff08;pointer-events:none}.hero-card h2{font-size:27px;margin:10px 0 8px;position:relative;z-index:1}.hero-card p{color:#bddee2;font-size:13px;margin:0 0 20px;max-width:650px;position:relative;z-index:1}.hero-card .btn{position:relative;z-index:1}.hero-flex{display:flex;align-items:center;justify-content:space-between;gap:18px}.hero-art{font-size:95px;opacity:.9;filter:drop-shadow(0 5px 20px #00d6a72d)}.progress-row{margin:16px 0 18px}.progress-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:9px;font-size:13px;font-weight:700}.progress{height:9px;background:#eaf0f7;border-radius:20px;overflow:hidden}.progress>span{display:block;height:100%;border-radius:20px;background:linear-gradient(90deg,#09a996,#36cbbc)}.progress.warning>span{background:linear-gradient(90deg,#e7ad56,#df8f59)}.progress.danger>span{background:linear-gradient(90deg,#dc737a,#ea9b7b)}.skill-title{display:flex;gap:11px;align-items:center;margin-bottom:6px}.skill-glyph{display:grid;place-items:center;width:37px;height:37px;border-radius:12px;background:#ecf7f9;color:#0999a6;font-size:22px}.skill-card{padding:17px 19px}.skill-card .progress-row{margin-bottom:0}.suggested{padding:20px;background:#e8f6f4;border:1px solid #c5ebe4;border-radius:17px}.suggested h3{font-size:17px;margin:0 0 9px;color:#0f6e67}.suggested p{font-size:12px;color:#457f7d;margin:0 0 14px}.user-pill{display:flex;align-items:center;gap:9px}.divider{border:0;border-top:1px solid #e7edf4;margin:20px 0}.empty{padding:38px;text-align:center;background:#f7fafc;border:1px dashed #d2dfec;border-radius:16px;color:#7287a2;font-size:13px}.empty .emoji{display:block;font-size:42px;margin-bottom:10px}.table-wrap{overflow:auto}.tbl{width:100%;border-collapse:collapse;text-align:right;font-size:13px;min-width:580px}.tbl thead{background:#f3f7fa;color:#748ba4}.tbl th{padding:14px 13px;font-size:11px}.tbl td{padding:15px 13px;border-bottom:1px solid #edf1f5}.tbl tbody tr:last-child td{border:0}.tbl tbody tr:hover{background:#f8fcfd}.table-tools{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin:0 0 15px}.table-tools input{max-width:320px}.badge-status{display:inline-flex;padding:5px 9px;border-radius:50px;font-size:11px;background:#edf6f8;color:#3c7682}.badge-status.danger{color:#bf5864;background:#fff0f1}.badge-status.good{color:#148b72;background:#e5f7ed}.badge-status.wait{color:#996e2f;background:#fff6e5}
/* questions */
.quiz-wrap{max-width:1020px;margin:auto}.quiz-header{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:16px}.quiz-panel{border:1px solid #e0eaf4;border-radius:22px;background:#fff;padding:30px;box-shadow:var(--shadow)}.quiz-headline{display:flex;justify-content:space-between;align-items:center;gap:16px;border-bottom:1px solid #e9eff5;padding-bottom:20px;margin-bottom:24px}.quiz-prompt{font-size:21px;font-weight:800;line-height:1.85;margin-bottom:23px}.puzzle-seq{direction:ltr;display:flex;justify-content:center;align-items:center;flex-wrap:wrap;gap:12px;margin:22px 0 27px}.seq-num{width:67px;height:67px;display:grid;place-items:center;background:#eaf4fc;border:1px solid #d6e8f3;border-radius:15px;font-weight:900;font-size:21px;color:#12376b}.seq-num.unknown{color:#0a9e89;background:#e0f9f3;border:2px dashed #1cbba9}.codebox{background:#0d2344;color:#c6edf5;border-radius:17px;padding:21px 25px;font:18px/2.2 monospace;direction:ltr;text-align:left;white-space:pre;overflow-x:auto;margin:12px 0 24px}.clues{display:grid;gap:9px;margin:10px 0 24px}.clue{border:1px solid #dce8f2;background:#f5f9fd;border-radius:12px;padding:14px 16px;font-size:14px;font-weight:700}.opts{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.option{display:flex;text-align:right;align-items:center;gap:12px;border:2px solid #e0e8f0;background:#fafcfe;border-radius:14px;min-height:65px;padding:14px 16px;font-weight:700;color:#294567}.option:hover{border-color:#b5d8e4;background:#f4fbfc}.option.active{border-color:#13b4a8;background:#e9faf6;color:#076f66}.option b{display:grid;place-items:center;border:1px solid #d9e3ee;width:32px;height:32px;min-width:32px;border-radius:10px;background:white;font-size:12px}.option.active b{background:#0dae9f;color:white;border-color:#0dae9f}.tile-grid{display:grid;grid-template-columns:repeat(7,40px);gap:8px;justify-content:center;direction:ltr;max-width:100%;margin:12px auto 25px}.shape-tile{width:40px;height:40px;position:relative;display:grid;place-items:center}.shape-tile:after{content:attr(data-mark);position:absolute;color:#fff;font-size:10px;font-weight:900}.shape-tile.circle::before{content:'';width:34px;height:34px;border-radius:50%;background:var(--shape)}.shape-tile.square::before{content:'';width:32px;height:32px;border-radius:7px;background:var(--shape)}.shape-tile.triangle::before{content:'';width:0;height:0;border-left:19px solid transparent;border-right:19px solid transparent;border-bottom:35px solid var(--shape)}.grid-path{display:grid;grid-template-columns:repeat(4,62px);gap:7px;justify-content:center;direction:ltr;margin:15px auto 22px}.gridcell{width:62px;height:62px;border:2px solid #d8e6f2;background:#f0f6fa;border-radius:12px;display:grid;place-items:center;font-size:23px;font-weight:900;position:relative;transition:.15s}.gridcell.selected{background:#c6f4e5;border-color:#10ad95;color:#107f6e}.gridcell.wall{background:#f8dedb;border-color:#eeb6b4;color:#aa6763}.gridcell.end{background:#dff7ec;border-color:#7ed6b3}.gridcell.start{background:#ccecf8;border-color:#81c8e8}.gridcell .step{position:absolute;right:3px;top:2px;font-size:10px;color:#0b8c82}.order-area{display:flex;justify-content:center;gap:12px;flex-wrap:wrap;margin:15px 0 25px}.order-chip{border:2px solid #d8e5f0;background:#f4f8fb;border-radius:14px;padding:17px 22px;font-size:14px;font-weight:800}.order-chip:disabled{opacity:.35}.order-result{background:#eef9f6;border:1px dashed #7ad5c3;border-radius:15px;min-height:57px;padding:14px;display:flex;gap:8px;align-items:center;justify-content:center;flex-wrap:wrap;margin-bottom:18px}.selected-chip{background:#0b998c;color:white;border-radius:10px;padding:8px 13px;font-size:13px;font-weight:800}.question-foot{display:flex;justify-content:space-between;align-items:center;gap:12px;border-top:1px solid #e9eff5;margin-top:25px;padding-top:23px}.feedback{border-radius:17px;padding:21px;margin:19px 0 0;border:1px solid #cfe8df;background:#ecfaf3}.feedback.bad{background:#fff4f1;border-color:#f2d0c8}.feedback h3{margin:0 0 9px}.feedback p{font-size:13px;margin-bottom:10px}.hint{padding:15px 18px;background:#fff7e8;border:1px solid #f3dfb7;border-radius:12px;color:#825d25;margin:10px 0;font-size:13px}.mock-nav{display:grid;grid-template-columns:repeat(10,1fr);gap:9px;margin:18px 0}.mock-tile{border:1px solid #d9e6ee;border-radius:10px;min-height:45px;background:white;color:#52708e;font-weight:900}.mock-tile.active{border:2px solid #09b5a0;color:#078878;background:#e5fbf5}.mock-tile.done{background:#dcefeb;color:#097a67}.levels{display:flex;justify-content:center;gap:8px;margin:0 0 21px}.levelbtn{border:1px solid #dce9f1;border-radius:10px;padding:9px 16px;background:#fff;color:#5b7694;font-weight:800}.levelbtn.active{color:#fff;background:#123964;border-color:#123964}.levelbtn.answered{background:#e3f3ee;border-color:#a5d7c5}.timer{display:inline-flex;align-items:center;gap:8px;background:#e8f6f4;color:#0b7c6d;padding:9px 13px;border-radius:11px;font-weight:900;font-variant-numeric:tabular-nums}.timer.danger{background:#fff0ec;color:#be5360}.report-line{display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid #eef2f6;padding:13px 0;gap:10px}.report-line:last-child{border:0}.report-num{font-size:38px;font-weight:900;color:#12375d;margin:8px 0}.quiz-panel .lesson-note{font-size:13px;color:#8194a5}
/* Studio */
.lesson-selector{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;margin-bottom:17px}.lesson-tab{text-align:right;background:white;border:1px solid #dce7ef;border-radius:13px;padding:15px;font-size:12px;font-weight:800;min-height:73px}.lesson-tab.active{background:#102e56;color:white;border-color:#102e56}.lesson-stage{background:linear-gradient(135deg,#0f2343,#113e56);padding:37px;color:white;border-radius:24px;min-height:470px;position:relative;overflow:hidden}.lesson-stage:after{content:'';width:300px;height:300px;border:50px solid #ffffff08;border-radius:100%;position:absolute;left:-100px;bottom:-150px}.lesson-stage h2{font-size:33px;margin:7px 0 15px;position:relative;z-index:1}.lesson-stage p{color:#bcd6e2;position:relative;z-index:1}.lesson-step{display:flex;gap:14px;align-items:center;background:#ffffff0c;border:1px solid #ffffff1f;border-radius:13px;padding:14px 17px;margin:9px 0;position:relative;z-index:1;max-width:900px;font-weight:700}.lesson-step b{background:#0eb5a0;border-radius:9px;padding:7px 12px}.lesson-stage .quote{padding:16px 20px;border-right:4px solid #ebbd70;background:#ffffff0b;border-radius:10px;position:relative;z-index:1}.stage-actions{display:flex;gap:10px;flex-wrap:wrap;position:relative;z-index:1;margin-top:23px}.lesson-stage:fullscreen{border-radius:0;display:flex;flex-direction:column;justify-content:center;padding:6vw}.lesson-stage:fullscreen h2{font-size:5vw}
/* overlay */
.modal-backdrop{position:fixed;inset:0;background:#071b36b8;backdrop-filter:blur(5px);display:grid;place-items:center;padding:17px;z-index:50}.modal{width:min(660px,100%);max-height:calc(100vh - 35px);overflow:auto;background:white;border-radius:24px;padding:26px;box-shadow:0 30px 100px #031a3c80}.modal h2{font-size:22px}.modal-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:19px}.modal-head h2{margin:0}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:15px}.form-grid .full{grid-column:1/-1}.form-footer{display:flex;justify-content:end;gap:10px;margin-top:20px}.codesheet{padding:12px;border:1px solid #dce8ed;border-radius:12px;background:#f5fafb;max-height:350px;overflow:auto}.codesheet .report-line{font-size:13px}.code-text{font-weight:900;direction:ltr;color:#0c857b;font-size:15px;letter-spacing:1px}.info-box{background:#eef8fd;border:1px solid #d5edf7;border-radius:13px;padding:15px;font-size:12px;color:#46718a;line-height:1.9}.danger-box{background:#fff0ef;border-color:#f3d4d0;color:#a4594f}.tool-tip{font-size:12px;color:#66839d}.footer-banner{color:#8293a7;text-align:center;font-size:11px;margin-top:42px;padding:20px;border-top:1px solid #dce8ee;line-height:2}.footer-banner b{color:#365575}#toast{position:fixed;bottom:24px;left:24px;z-index:100;display:grid;gap:9px}.toast{max-width:380px;border-radius:13px;background:#122d4e;color:white;padding:13px 18px;box-shadow:0 10px 40px #001b4266;line-height:1.7;font-size:13px;animation:toastIn .25s ease}.toast.bad{background:#a93e4a}@keyframes toastIn{from{transform:translateY(10px);opacity:0}to{transform:translateY(0);opacity:1}}.mobile-brand{display:none}.bottomnav{display:none}
@media(max-width:1150px){.shell{grid-template-columns:230px minmax(0,1fr)}.sidebar{padding:23px 13px}.main{padding:26px}.topbar{padding:0 27px}.grid4{grid-template-columns:repeat(2,minmax(0,1fr))}.hero-title{font-size:52px}.login-grid{gap:25px;grid-template-columns:minmax(0,1fr) 420px}}@media(max-width:880px){.login-grid{grid-template-columns:1fr;gap:38px}.login-hero{order:2}.auth-card{order:1;max-width:540px;margin:auto;width:100%}.hero-title{font-size:42px}.login-grid{padding-top:37px;padding-bottom:60px}.mock-panel{display:none}.login-bottom{padding-top:20px}.shell{display:block}.sidebar{display:none}.mobile-brand{display:flex}.topbar{height:74px;padding:0 20px}.main{padding:23px 17px 110px}.bottomnav{display:flex;position:fixed;bottom:0;left:0;right:0;height:74px;background:#fff;border-top:1px solid #dce7f1;z-index:20;align-items:stretch;justify-content:space-around;padding-bottom:env(safe-area-inset-bottom);box-shadow:0 -12px 35px #183c5b12}.bottomnav button{border:0;background:none;color:#8a9aab;display:grid;justify-items:center;align-content:center;gap:3px;font-size:10px;font-weight:800;flex:1}.bottomnav button .ni{font-size:21px}.bottomnav button.active{color:#008f83}.grid3{grid-template-columns:repeat(2,minmax(0,1fr))}.lesson-selector{grid-template-columns:repeat(2,minmax(0,1fr))}.float-card{display:none}}
@media(max-width:620px){.login-top{padding:21px 19px 0}.login-grid{padding:26px 19px 50px}.login-bottom{padding:20px 19px}.auth-card{padding:24px 20px}.hero-title{font-size:37px}.hero-highlights{grid-template-columns:repeat(3,1fr);gap:7px}.highlight{padding:12px 8px}.highlight b{font-size:19px}.highlight span{font-size:9px}.top-support{font-size:10px}.brand-stack b{font-size:16px}.brand-mark{width:40px;height:40px}.topbar-title{font-size:16px}.topbar-sub{font-size:10px}.topbar .brand-stack{display:none}.main{padding:19px 13px 98px}.page-head{align-items:start;flex-direction:column}.page-head h1{font-size:24px}.grid2,.grid3{grid-template-columns:1fr}.grid4{grid-template-columns:repeat(2,minmax(0,1fr));gap:9px}.card{padding:19px 16px}.hero-card{padding:23px 19px}.hero-card h2{font-size:23px}.hero-art{font-size:55px}.stat-card{padding:15px}.stat-card strong{font-size:26px}.quiz-panel{padding:17px 13px}.quiz-prompt{font-size:18px}.opts{grid-template-columns:1fr}.option{min-height:59px}.quiz-headline{align-items:start}.seq-num{width:47px;height:50px;font-size:16px}.puzzle-seq{gap:6px}.grid-path{grid-template-columns:repeat(4,54px);gap:6px}.gridcell{width:54px;height:54px}.mock-nav{grid-template-columns:repeat(5,1fr)}.levels{flex-wrap:wrap}.question-foot{flex-wrap:wrap}.question-foot .btn{flex:1}.form-grid{grid-template-columns:1fr}.form-grid .full{grid-column:auto}.lesson-stage{padding:23px 19px;min-height:420px}.lesson-stage h2{font-size:27px}.modal{padding:20px}.tile-grid{grid-template-columns:repeat(6,39px)}#toast{left:13px;right:13px;bottom:88px}.toast{max-width:none}}