@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700;800&family=Manrope:wght@400;500;600;700;800&display=swap');
:root{--bg:#f4f7fb;--paper:#fff;--navy:#112846;--muted:#74839a;--line:#e5ebf3;--blue:#166bd0;--blue-light:#e8f2ff;--orange:#fa7927;--ink:#1c304a;--green:#178765;--red:#bf4250;--shadow:0 9px 30px rgba(24,52,90,.055);font-family:'DM Sans',system-ui,-apple-system,sans-serif;font-synthesis:none;color:var(--ink);background:var(--bg)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;min-width:320px}button,input,select,textarea{font:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.5}a{color:var(--blue)}b,strong{font-weight:800}h1,h2,h3{font-family:Manrope,'DM Sans',sans-serif;line-height:1.22;letter-spacing:-.035em}h1{font-size:clamp(26px,3vw,35px)}h2{font-size:22px}h3{font-size:17px}p{line-height:1.65}small,.small{font-size:12px}.muted{color:var(--muted)}.tiny{font-size:11px}.app-layout{display:grid;grid-template-columns:252px minmax(0,1fr);min-height:100vh}.sidebar{background:var(--paper);border-right:1px solid var(--line);padding:25px 14px;position:sticky;top:0;height:100vh;display:flex;flex-direction:column;z-index:10}.brand{display:flex;align-items:center;gap:12px;margin-bottom:28px;padding:0 10px}.brand-icon{width:43px;height:43px;background:linear-gradient(145deg,#2478dd,#0c4c9c);color:#fff;display:grid;place-items:center;font-size:23px;font-weight:800;border-radius:13px;box-shadow:0 7px 15px #1f72ce2d}.brand b{font-family:Manrope;font-size:14px;display:block;color:var(--navy)}.brand span{font-size:11px;color:#8090a6;display:block;margin-top:3px}.sidebar-section{color:#acb5c2;font-size:10px;font-weight:800;letter-spacing:.14em;text-transform:uppercase;padding:0 15px;margin:14px 0 9px}.nav-btn{display:flex;align-items:center;gap:12px;background:transparent;border:0;border-radius:11px;width:100%;padding:12px 13px;color:#5e7189;font-weight:700;font-size:13px;text-align:left;margin:2px 0}.nav-btn svg{width:19px;height:19px}.nav-btn:hover{background:#f3f7fc}.nav-btn.active{background:var(--blue-light);color:var(--blue)}.sidebar-bottom{margin-top:auto;padding:14px 10px;border-top:1px solid var(--line)}.sidebar-bottom .avatar{width:33px;height:33px;border-radius:50%;background:#eaf2ff;color:#115db6;display:grid;place-items:center;font-weight:800}.sidebar-bottom .userline{display:flex;align-items:center;gap:10px;margin-bottom:12px;min-width:0}.sidebar-bottom small{display:block;font-size:11px;color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:150px}.sidebar-bottom b{font-size:12px}.main-wrap{min-width:0}.topbar{height:77px;border-bottom:1px solid var(--line);background:#fff;display:flex;align-items:center;justify-content:space-between;padding:0 clamp(20px,3vw,44px);gap:15px}.topbar .crumb{font-size:12px;color:#8494a9}.topbar .crumb b{color:var(--navy)}.top-actions{display:flex;align-items:center;gap:10px}.icon-btn{border:1px solid var(--line);border-radius:11px;background:#fff;color:#6a7c93;height:38px;min-width:38px;display:grid;place-items:center}.icon-btn svg{width:19px;height:19px}.lang-toggle{border:1px solid var(--line);border-radius:11px;background:#fff;color:var(--ink);padding:10px;font-weight:800;font-size:11px}.content{max-width:1500px;padding:32px clamp(20px,3vw,44px) 135px;margin:auto}.eyebrow{color:var(--blue);font-size:11px;font-weight:800;letter-spacing:.10em;text-transform:uppercase}.page-title{margin:7px 0 7px;color:var(--navy)}.subhead{font-size:13px;color:var(--muted);margin:0 0 24px}.card{background:var(--paper);border:1px solid var(--line);border-radius:17px;box-shadow:var(--shadow);padding:22px;min-width:0}.card h3{color:var(--navy);margin:0 0 6px}.card p{font-size:13px;margin:8px 0 0;color:var(--muted)}.grid{display:grid;gap:17px}.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}.stat{display:flex;align-items:center;justify-content:space-between}.stat-icon{width:46px;height:46px;border-radius:13px;background:#edf4ff;color:var(--blue);display:grid;place-items:center}.stat-icon.orange{background:#fff0e6;color:var(--orange)}.stat-icon.green{background:#e7f7f0;color:var(--green)}.stat-icon.purple{background:#f1eaff;color:#8058c6}.stat-value{font-size:27px;font-family:Manrope;font-weight:800;letter-spacing:-.04em;color:var(--navy);margin-top:9px}.stat-label{font-size:12px;color:#7e8ea3}.section-title{margin:33px 0 16px;display:flex;justify-content:space-between;gap:12px;align-items:center}.section-title h2{margin:0;font-size:18px}.hero{background:linear-gradient(115deg,#123f79,#1b70cb);color:#fff;border:0;border-radius:20px;min-height:231px;padding:32px;position:relative;overflow:hidden;display:flex;align-items:center}.hero:before,.hero:after{content:'';position:absolute;width:340px;height:340px;border:1px solid #ffffff32;border-radius:50%;right:-65px;top:-100px}.hero:after{width:250px;height:250px;right:20px;top:-55px}.hero-text{position:relative;z-index:1;max-width:500px}.hero h1{margin:12px 0;color:#fff;font-size:clamp(25px,3.1vw,35px)}.hero p{max-width:460px;font-size:13px;opacity:.86}.hero .eyebrow{color:#aed5ff}.hero-actions{margin-top:21px;display:flex;flex-wrap:wrap;gap:9px}.hero-illustration{margin-left:auto;position:relative;z-index:1;font-size:92px;filter:drop-shadow(0 14px 12px #0b2c5380)}.btn{border:1px solid var(--line);border-radius:11px;padding:10px 17px;display:inline-flex;align-items:center;justify-content:center;gap:9px;background:#fff;color:var(--navy);font-size:12px;font-weight:800;line-height:1.4;min-height:41px;text-decoration:none;transition:transform .13s ease,background .13s ease}.btn svg{width:16px;height:16px}.btn:hover{transform:translateY(-1px)}.btn-primary{background:var(--blue);border-color:var(--blue);color:#fff}.btn-orange{background:var(--orange);border-color:var(--orange);color:#fff}.btn-ghost{background:transparent;color:var(--blue);border-color:#c4daf7}.btn-light{background:#fff;color:#165aa6;border-color:#fff}.btn-outline-light{background:#ffffff20;border:1px solid #ffffff80;color:#fff}.btn-lg{padding:13px 22px;min-height:47px;font-size:13px}.btn-sm{min-height:33px;padding:7px 11px;font-size:11px}.badge{display:inline-flex;gap:5px;align-items:center;white-space:nowrap;padding:5px 9px;background:#eaf4ff;color:#1872c6;border-radius:7px;font-size:10px;font-weight:800}.badge.amber{background:#fff1dc;color:#ae7810}.badge.green{background:#e9f8ef;color:#178765}.badge.red{background:#fff0f2;color:#bd465c}.topic-card{padding:19px;display:flex;gap:13px;align-items:flex-start;text-align:left;width:100%;cursor:pointer}.topic-card:hover,.lesson-card:hover,.book-card:hover{border-color:#b4d2f4;box-shadow:0 8px 24px #2363aa10}.topic-icon{width:44px;height:44px;border-radius:13px;background:#eef4ff;display:grid;place-items:center;flex:none;color:var(--blue)}.topic-icon.orange{background:#fff2e8;color:#df782d}.topic-icon.green{background:#eaf8f2;color:#258669}.topic-icon.purple{background:#f0ebff;color:#7956bd}.topic-card h3{font-size:13px;margin:0 0 5px}.topic-card p{margin:0;font-size:11px}.link{background:none;border:0;color:var(--blue);padding:0;font-weight:800;font-size:12px}.lesson-card{display:flex;flex-direction:column;gap:12px}.lesson-meta{display:flex;justify-content:space-between;align-items:center;gap:7px}.lesson-card .lesson-title{font-size:14px;font-weight:800;color:var(--navy);line-height:1.45}.lesson-card .bottom{display:flex;justify-content:space-between;align-items:center;margin-top:auto}.progress{height:7px;background:#e9edf4;border-radius:100px;overflow:hidden}.progress span{height:100%;display:block;background:linear-gradient(90deg,#1f70cf,#59a9ed);border-radius:100px}.field,label.field{display:flex;flex-direction:column;gap:7px;font-size:12px;font-weight:800;color:var(--navy)}input,select,textarea{width:100%;padding:12px 13px;border:1px solid #dfe7f0;border-radius:10px;outline:none;background:#fff;color:var(--ink);font-size:13px;font-weight:500}input:focus,select:focus,textarea:focus{border-color:#78aeea;box-shadow:0 0 0 3px #e8f3ff}textarea{min-height:90px;resize:vertical;line-height:1.55}.field-row{display:grid;grid-template-columns:1fr 1fr;gap:13px}.filters{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin:17px 0 24px}.filters .field{min-width:170px;flex:1}.seg{display:inline-flex;border:1px solid var(--line);padding:4px;border-radius:11px;background:#fff;gap:3px}.seg button{border:0;background:none;padding:9px 13px;font-size:11px;border-radius:8px;font-weight:800;color:#667c96}.seg button.active{background:var(--blue-light);color:var(--blue)}.book-card{display:flex;align-items:center;gap:16px;cursor:pointer}.book-cover{display:grid;place-items:center;width:68px;height:90px;background:linear-gradient(155deg,#285cb0,#153165);color:#fff;border-radius:7px;flex:none;box-shadow:4px 5px 0 #d5e0ee;font-size:30px}.book-cover.orange{background:linear-gradient(155deg,#eb934d,#b86022)}.book-card h3{font-size:14px}.book-card p{font-size:11px}.page-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(170px,1fr));gap:12px}.page-tile{border:1px solid var(--line);border-radius:13px;padding:10px;background:#fff;cursor:pointer;display:flex;flex-direction:column;gap:8px;text-align:left}.page-tile:hover{border-color:#80b6ef}.page-tile img{width:100%;height:164px;object-fit:contain;background:#edf1f5;border-radius:7px}.page-tile p{font-size:11px;color:var(--muted);line-height:1.4;margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.reader{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(270px,.8fr);gap:18px}.reader-img{display:grid;place-items:center;background:#e9edf3;padding:12px;border-radius:13px;min-height:400px}.reader-img img{max-width:100%;max-height:72vh;object-fit:contain}.reader-text{white-space:pre-wrap;font-size:12px;line-height:1.6;max-height:60vh;overflow:auto}.warning-note{padding:12px 14px;background:#fff6e8;border:1px solid #f4deb5;border-radius:11px;font-size:12px;color:#906521;line-height:1.55}.lesson-body{white-space:pre-line;font-size:14px;line-height:1.9;color:#43566f}.quiz-question{font-size:21px;color:var(--navy);font-weight:800;line-height:1.48;margin:20px 0}.option{width:100%;text-align:left;background:#fff;border:1px solid #e1e8f1;border-radius:12px;padding:15px;display:flex;gap:12px;align-items:flex-start;margin:9px 0;color:#334763;font-size:13px;line-height:1.5}.option:hover{background:#f7faff;border-color:#afcdeb}.option.sel{border-color:#2379d2;background:#eef6ff}.option strong{display:grid;place-items:center;background:#f0f3f8;width:27px;height:27px;flex:none;border-radius:8px;color:#5e7796}.option.sel strong{background:var(--blue);color:#fff}.quiz-grid{display:grid;grid-template-columns:minmax(0,1fr) 250px;gap:21px}.number-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:6px}.number-grid button{height:35px;border-radius:8px;border:1px solid var(--line);background:#fff;color:#687a90;font-weight:700;font-size:12px}.number-grid button.active{background:var(--blue);color:#fff;border-color:var(--blue)}.number-grid button.answered:not(.active){background:#e8f6ef;color:#178765;border-color:#bfe6d2}.result-card{border:1px solid var(--line);background:#fff;border-radius:12px;padding:15px;margin:12px 0;font-size:13px}.result-card.good{border-left:4px solid #239c76}.result-card.bad{border-left:4px solid #d45d68}.result-card p{color:#677b93;font-size:12px;margin:7px 0}.audio-card{display:flex;align-items:center;gap:13px;min-width:0}.audio-card .audio-title{font-weight:800;color:var(--navy);font-size:13px}.audio-card .audio-desc{font-size:11px;color:var(--muted)}.play-round{background:var(--blue-light);color:var(--blue);border:0;border-radius:50%;width:49px;height:49px;display:grid;place-items:center;flex:none}.audio-player{position:fixed;left:252px;right:0;bottom:0;z-index:30;background:#ffffffed;backdrop-filter:blur(16px);border-top:1px solid #dce5f0;padding:13px clamp(20px,3vw,44px);box-shadow:0 -6px 24px #0e30560a}.player-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;max-width:1420px;margin:auto}.track-name{min-width:0;max-width:280px;display:flex;align-items:center;gap:10px}.track-name .icon-circle{width:42px;height:42px;background:linear-gradient(120deg,#1a69c0,#124486);color:#fff;border-radius:11px;display:grid;place-items:center;flex:none}.track-name strong{font-size:12px;color:var(--navy);display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.player-middle{flex:1;max-width:510px;display:flex;flex-direction:column;gap:5px;align-items:center}.player-controls{display:flex;gap:12px;align-items:center}.player-controls button{border:0;background:transparent;color:var(--navy);width:30px;height:30px;display:grid;place-items:center}.player-controls button.primary{border-radius:50%;background:var(--blue);color:#fff;width:37px;height:37px}.player-timeline{display:flex;align-items:center;gap:10px;width:100%;font-size:10px;color:#8798ac}.player-timeline input{width:100%;padding:0;accent-color:var(--blue);box-shadow:none}.player-tools{display:flex;align-items:center;gap:10px}.player-tools select{width:auto;padding:7px;border:0;background:transparent;font-size:12px}.player-tools a{font-size:11px}.mobile-nav{display:none}.toast-zone{position:fixed;top:16px;right:18px;z-index:200;display:flex;flex-direction:column;gap:7px}.toast{background:#142d4e;color:#fff;padding:12px 17px;box-shadow:0 12px 30px #1b395633;border-radius:10px;font-size:12px;max-width:350px}.toast.error{background:#a84050}.empty{border:1px dashed #d2dce9;border-radius:15px;background:#fff;padding:34px;text-align:center;color:var(--muted);font-size:13px}.empty-icon{font-size:29px;margin-bottom:9px}.pill{border-radius:100px;background:#edf4ff;color:#3975b9;font-size:10px;padding:5px 9px;font-weight:800}.table-wrap{overflow:auto}.table{width:100%;border-collapse:collapse;font-size:12px}.table th{text-align:left;color:#8493a7;font-size:10px;letter-spacing:.05em;padding:13px 10px;border-bottom:1px solid var(--line)}.table td{padding:11px 10px;border-bottom:1px solid var(--line)}.table tr:hover td{background:#fafcff}.admin-tabs{display:flex;flex-wrap:wrap;gap:7px;margin:20px 0}.admin-tabs button{border:1px solid var(--line);padding:10px 12px;background:#fff;border-radius:9px;font-size:12px;font-weight:800;color:#6e8097}.admin-tabs button.active{color:#fff;background:var(--blue);border-color:var(--blue)}.admin-form{display:grid;gap:13px;max-width:890px}.divider{height:1px;background:var(--line);margin:18px 0}.auth-screen{min-height:100vh;display:grid;grid-template-columns:1fr 1fr;background:#fff}.auth-art{background:linear-gradient(140deg,#102f59,#1469b8);color:#fff;padding:8vw 6vw;display:flex;align-items:center}.auth-art h1{font-size:clamp(32px,3.5vw,55px);line-height:1.18;color:#fff;max-width:600px}.auth-art p{font-size:15px;color:#d7e9fa;max-width:480px}.auth-feature{display:flex;align-items:center;gap:12px;font-size:13px;font-weight:700;margin:21px 0;color:#dbeeff}.auth-form-wrap{display:grid;place-items:center;padding:35px}.auth-box{max-width:400px;width:100%}.auth-box h2{font-size:28px}.auth-box .field{margin-bottom:15px}.auth-box .btn{width:100%}.setup-page{background:var(--bg);padding:30px 15px}.setup-card{max-width:660px;background:#fff;margin:auto;padding:35px;border:1px solid var(--line);border-radius:18px}.setup-card .brand{padding:0}.setup-card h1{font-size:25px}.setup-card h3{margin:24px 0 13px}.install-form{display:grid;gap:13px}.install-form label{display:grid;gap:6px;font-size:12px;font-weight:800}.alert{padding:12px;border-radius:10px;font-size:12px}.alert-error{background:#ffeff1;color:#a22c43}.boot{display:flex;gap:14px;min-height:100vh;align-items:center;justify-content:center;font-size:14px}.spinner{height:22px;width:22px;border:3px solid #d4e5f6;border-top-color:var(--blue);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}
@media(max-width:1150px){.grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}.grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}.hero-illustration{font-size:65px}.reader{grid-template-columns:1fr}.quiz-grid{grid-template-columns:1fr}.quiz-grid>aside{order:-1}}
@media(max-width:820px){.app-layout{display:block}.sidebar{display:none}.audio-player{left:0;bottom:67px;padding:8px 12px}.mobile-nav{display:flex;position:fixed;bottom:0;left:0;right:0;background:#fff;z-index:31;box-shadow:0 -4px 12px #1d426b0c;border-top:1px solid var(--line);justify-content:space-around;padding:6px 5px calc(6px + env(safe-area-inset-bottom))}.mobile-nav button{border:0;background:none;color:#718399;font-size:10px;font-weight:800;display:flex;flex-direction:column;gap:2px;align-items:center;min-width:52px;min-height:48px}.mobile-nav svg{width:21px;height:21px}.mobile-nav button.active{color:var(--blue)}.topbar{height:64px;padding:0 17px}.content{padding:22px 16px 190px}.hero{padding:24px;min-height:223px}.hero-illustration{display:none}.grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}.auth-screen{grid-template-columns:1fr}.auth-art{display:none}.auth-form-wrap{min-height:100vh}.player-inner{gap:8px}.track-name{max-width:150px}.player-tools{display:none}}
@media(max-width:535px){h1{font-size:26px}.page-title{margin-top:5px}.card{padding:17px}.grid-4,.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}.grid-3{grid-template-columns:1fr}.stats-grid .card{padding:15px}.stat-icon{width:34px;height:34px}.stat-icon svg{width:17px}.stat-value{font-size:23px}.stat-label{font-size:10px}.field-row{grid-template-columns:1fr}.hero{min-height:230px}.hero .btn{padding:10px 12px}.book-card{grid-column:span 2}.player-inner{flex-wrap:wrap;position:relative}.audio-player .track-name{max-width:100%;width:100%}.player-middle{width:100%;max-width:none}.player-controls{position:absolute;right:0;top:6px}.player-controls button:not(.primary){display:none}.player-timeline{margin-top:0}.audio-player{bottom:65px}.page-list{grid-template-columns:repeat(2,minmax(0,1fr))}.page-tile img{height:140px}.quiz-question{font-size:17px}.option{padding:12px}.filters .field{min-width:100%}.reader-img{min-height:250px}.reader-img img{max-height:60vh}}