[hidden]{display:none!important}
@font-face{font-family:Archivo;src:url('../css/fonts/archivo-latin.woff2') format('woff2');font-display:swap}
:root{color-scheme:light;--bg:#f4f7f8;--surface:#fff;--ink:#183347;--muted:#607583;--line:#dfE8eb;--accent:#127d80;--soft:#eaf6f3;--nav:#112d42;--blue:#2b66c7;--shadow:0 6px 25px #193e5010}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:14px/1.6 Archivo,Inter,system-ui,sans-serif}button,input,select,textarea{font:inherit}button,a,input,select,textarea,summary{touch-action:manipulation}a{color:var(--accent);text-underline-offset:3px}button{cursor:pointer}button:disabled{cursor:wait;opacity:.55}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid #3fa9ba;outline-offset:3px}h1,h2,h3,h4,p{margin-top:0}h1{font-size:32px;letter-spacing:-1.1px;line-height:1.2;margin-bottom:10px}h2{font-size:19px;line-height:1.35;letter-spacing:-.35px}h3{font-size:16px;line-height:1.4}p{margin-bottom:14px}small,.muted{color:var(--muted)}.skip{position:fixed;top:-70px;left:20px;padding:12px;background:var(--surface);z-index:100}.skip:focus{top:12px}.workspace{display:flex;min-height:100vh}.sidebar{position:fixed;inset:0 auto 0 0;width:244px;background:var(--nav);color:#c1d1dc;display:flex;flex-direction:column;padding:31px 19px 20px;z-index:10}.brand{display:flex;align-items:center;gap:10px;color:#fff;text-decoration:none;margin:0 10px 39px}.brand b{font-size:21px;letter-spacing:1px;line-height:1.2}.brand small{display:block;font-size:7px;color:#94b6c8;letter-spacing:2px}.brand-mark{display:grid;place-items:center;border:2px solid #59c8bf;color:#85e5d2;border-radius:50%;width:35px;height:35px;font-size:26px;font-weight:600;line-height:1}.workspace-label{font-size:9px;font-weight:700;letter-spacing:1.5px;color:#7995a7;margin:0 13px 12px}.sidebar nav{overflow-y:auto;scrollbar-width:thin;display:flex;flex-direction:column;gap:3px}.nav-item{display:flex;gap:11px;align-items:center;padding:10px 12px;border-radius:7px;color:#b8cbd8;text-decoration:none;font-size:12px;transition:background .15s}.nav-item:hover{background:#ffffff0b;color:#fff}.nav-item.active{background:#1a6d72;color:#ecfffb;font-weight:600}.nav-symbol{width:19px;text-align:center;font-size:19px;line-height:20px}.sidebar-bottom{margin-top:auto;padding:24px 12px 0;font-size:10px;color:#b4c8d2}.sidebar-bottom small{font-size:10px;color:#7d9bad}.sidebar-bottom a{display:block;color:#b9d7df;text-decoration:none;margin-top:17px}.cloud-dot{display:inline-block;width:6px;height:6px;border-radius:50%;background:#72c6ab;margin-right:6px}.app-body{margin-left:244px;min-width:0;width:calc(100% - 244px)}.topbar{height:78px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 42px;background:var(--surface);gap:15px}.topbar>div{display:flex;align-items:center;gap:12px}.topbar b{font-size:14px}.app-icon{color:var(--accent);font-size:26px}.private-label{font-size:10px;color:var(--muted);border-left:1px solid var(--line);padding-left:12px}.top-actions{gap:16px}.identity{font-size:11px;color:var(--muted);max-width:180px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.icon-button{border:0;background:transparent;color:var(--muted);font-size:23px;min-width:35px;min-height:35px;border-radius:7px}.icon-button:hover{background:var(--bg)}main{max-width:1450px;margin:auto;padding:38px 42px 45px;min-height:calc(100vh - 132px);outline:none}.page-heading{display:flex;justify-content:space-between;align-items:center;gap:18px;margin-bottom:26px}.eyebrow{display:block;text-transform:uppercase;letter-spacing:1.5px;color:var(--accent);font-size:9px;font-weight:700;margin-bottom:9px}.subtitle{color:var(--muted);max-width:650px;margin:0;font-size:13px}.date-chip{font-size:11px;color:var(--muted);white-space:nowrap;padding:7px 12px;border:1px solid var(--line);background:var(--surface);border-radius:20px}.hero{display:grid;grid-template-columns:1fr 190px;gap:20px;background:linear-gradient(115deg,#12384c,#165c67);color:#fff;border-radius:15px;padding:30px 34px;position:relative;overflow:hidden;margin-bottom:24px;min-height:224px}.hero h2{font-size:29px;letter-spacing:-1px;max-width:500px;margin:10px 0}.hero p{color:#b4d5db;max-width:490px;font-size:12px}.hero .eyebrow{color:#86d8c9;font-size:9px}.hero .button{background:#d8f1a3;border-color:#d8f1a3;color:#183f36;box-shadow:none}.hero-graphic{position:relative;display:grid;place-items:center;min-height:160px}.orbit{position:absolute;width:145px;height:145px;border:1px solid #7dcec83b;border-radius:50%;transform:rotate(-27deg)}.orbit.two{width:185px;height:100px;transform:rotate(-28deg)}.orbit.three{width:100px;height:185px;transform:rotate(-28deg)}.orbit-center{width:76px;height:76px;border-radius:22px;background:#ffffff10;border:1px solid #b0e9dc55;display:grid;place-items:center;font-size:42px;color:#d5f2c0;transform:rotate(-8deg);box-shadow:0 0 35px #62b6b722}.orbit-center span{transform:rotate(8deg)}.hero-graphic:after{content:'';position:absolute;top:21px;right:43px;width:9px;height:9px;background:#cff1ae;border:3px solid #3f807b;border-radius:50%;box-shadow:0 0 0 6px #87cba011}.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:15px;margin:0 0 30px}.stat{background:var(--surface);border:1px solid var(--line);border-radius:11px;padding:18px 19px;box-shadow:var(--shadow)}.stat-label{font-size:10px;color:var(--muted);display:flex;justify-content:space-between;gap:8px}.stat strong{display:block;font-size:27px;font-weight:600;line-height:1.6;letter-spacing:-.8px}.stat small{font-size:9px}.stat-glyph{color:var(--accent);font-size:16px}.section-head{display:flex;justify-content:space-between;gap:15px;align-items:center;margin:25px 0 15px}.section-head h2{margin:0}.text-button{border:0;background:transparent;padding:6px 0;color:var(--accent);font-weight:600;font-size:11px}.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:17px}.grid.two{grid-template-columns:repeat(2,minmax(0,1fr))}.card{background:var(--surface);border:1px solid var(--line);border-radius:11px;padding:22px;box-shadow:var(--shadow);min-width:0}.card h3{margin:12px 0 8px}.card p{font-size:12px;color:var(--muted)}.card-foot{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-top:17px}.card-icon{width:40px;height:40px;border-radius:10px;background:var(--soft);color:var(--accent);font-size:22px;display:grid;place-items:center}.card:nth-child(3n+2) .card-icon{background:#eef1fd;color:#6578ca}.card:nth-child(3n+3) .card-icon{background:#fff4e0;color:#a8782c}.tag{display:inline-flex;align-items:center;font-size:9px;font-weight:600;letter-spacing:.2px;padding:3px 8px;border-radius:5px;background:var(--soft);color:var(--accent);max-width:100%;overflow-wrap:anywhere}.tag.neutral{background:var(--bg);color:var(--muted)}.tag.warning{background:#fff0d5;color:#936a14}.tag.success{background:#e8f6eb;color:#26754d}.tag.error{background:#fbe9e7;color:#9c3d32}.button{display:inline-flex;justify-content:center;align-items:center;gap:8px;border-radius:7px;border:1px solid var(--accent);background:var(--accent);color:#fff;padding:9px 14px;font-size:11px;font-weight:600;line-height:1.5;text-decoration:none;min-height:37px;white-space:normal;text-align:center}.button.secondary{background:var(--surface);border-color:var(--line);color:var(--ink)}.button.danger{background:var(--surface);border-color:#d5b3ae;color:#a54d41}.button:hover{filter:brightness(.95)}.actions{display:flex;gap:9px;flex-wrap:wrap;align-items:center}.empty{border:1px dashed #c5d7dc;background:var(--surface);border-radius:11px;padding:30px;text-align:center;color:var(--muted)}.empty h3{color:var(--ink);margin:0 0 6px}.empty p{font-size:12px;margin-bottom:15px}.empty .card-icon{margin:0 auto 15px}.empty.compact{padding:20px}.row-list{display:flex;flex-direction:column;gap:12px}.list-row{border:1px solid var(--line);border-radius:9px;background:var(--surface);padding:16px 18px;display:flex;align-items:center;gap:16px;justify-content:space-between}.row-main{flex:1;min-width:0}.row-main h3{margin:0 0 4px;font-size:13px}.row-main p{font-size:11px;color:var(--muted);margin:0}.progress-meta{display:flex;justify-content:space-between;color:var(--muted);font-size:10px;margin:11px 0 6px}progress{display:block;width:100%;height:6px;border:0;border-radius:10px;overflow:hidden;appearance:none;background:var(--line)}progress::-webkit-progress-bar{background:var(--line)}progress::-webkit-progress-value{background:var(--accent);border-radius:10px}progress::-moz-progress-bar{background:var(--accent)}.panel{background:var(--surface);border:1px solid var(--line);border-radius:11px;padding:24px;margin-bottom:20px}.panel h2{margin:0 0 15px}.note{font-size:11px;color:var(--muted);background:var(--soft);border:1px solid #98bebb45;border-radius:8px;padding:12px 15px;margin:14px 0;overflow-wrap:anywhere}.note.warning{background:#fff7e7;color:#8b681d}.note.error{background:#fff0ed;color:#a64e3e}.error-page{max-width:570px;margin:60px auto}.error-page h2{font-size:24px}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:15px}.field{display:flex;flex-direction:column;gap:5px;margin-bottom:14px;font-size:11px;font-weight:600}.field input,.field select,.field textarea,.control{width:100%;background:var(--surface);border:1px solid #cbd8dd;border-radius:7px;padding:10px 11px;color:var(--ink);min-height:40px;font-size:12px;font-weight:400}.field textarea{min-height:100px;resize:vertical}.field small{font-size:10px;font-weight:400}.check-label{display:flex;align-items:flex-start;gap:9px;font-size:12px;margin:10px 0}.check-label input{margin-top:4px;accent-color:var(--accent);flex-shrink:0}.loading{display:flex;justify-content:center;align-items:center;gap:12px;color:var(--muted);padding:60px 15px;font-size:12px}.spinner{width:20px;height:20px;display:inline-block;border:2px solid var(--line);border-top-color:var(--accent);border-radius:50%;animation:spin .7s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.app-footer{display:flex;justify-content:space-between;border-top:1px solid var(--line);padding:17px 42px;font-size:9px;color:var(--muted);gap:12px}.notice{position:fixed;bottom:24px;left:calc(50% + 100px);transform:translateX(-50%);z-index:100;background:#153f41;color:#fff;border-radius:9px;padding:13px 18px;box-shadow:0 10px 35px #0003;font-size:12px;max-width:min(600px,90vw)}.notice.error{background:#913f36}dialog{width:min(820px,calc(100vw - 36px));max-height:90vh;border:1px solid var(--line);border-radius:15px;background:var(--surface);color:var(--ink);padding:0;box-shadow:0 20px 80px #0004}dialog::backdrop{background:#0e253a88;backdrop-filter:blur(3px)}.modal-header{display:flex;justify-content:space-between;align-items:center;gap:15px;padding:20px 24px;border-bottom:1px solid var(--line);position:sticky;top:0;background:var(--surface);z-index:1}.modal-header h2{margin:0;font-size:19px}#modal-body{padding:24px}.lesson-body{font-size:13px;line-height:1.8;overflow-wrap:anywhere}.lesson-body h3{margin-top:22px}.lesson-body ul{padding-left:20px}.lesson-section{margin:16px 0}.quiz-item{margin:20px 0;padding:16px;border:1px solid var(--line);border-radius:9px;min-width:0}.quiz-item legend{font-weight:600;font-size:12px;padding:0 5px}.quiz-item label{font-size:12px}.quiz-result{margin:16px 0}.result-row{padding:11px 14px;border-left:3px solid var(--accent);background:var(--soft);margin:8px 0;font-size:12px}.result-row.wrong{border-color:#ba624b;background:#fdf1e9}.artifact{white-space:pre-wrap;overflow-wrap:anywhere;font:11px/1.7 ui-monospace,SFMono-Regular,monospace;max-height:300px;overflow:auto;background:var(--bg);padding:16px;border:1px solid var(--line);border-radius:8px}.detail{margin-top:12px;border-top:1px solid var(--line);padding-top:12px}.detail summary{cursor:pointer;font-size:12px;font-weight:600}.table-wrap{overflow-x:auto}table{border-collapse:collapse;width:100%;font-size:11px}th,td{text-align:left;border-bottom:1px solid var(--line);padding:11px 13px;vertical-align:top}th{color:var(--muted);font-size:10px;background:var(--bg);white-space:nowrap}.score{font-size:38px;font-weight:600;letter-spacing:-1px;color:var(--accent)}.score small{font-size:14px;color:var(--muted)}.toolbar{display:flex;gap:12px;align-items:center;margin:16px 0;flex-wrap:wrap}.toolbar .field{margin:0}.catalog-search{max-width:340px;margin-bottom:20px}.welcome-grid{display:grid;grid-template-columns:1.7fr 1fr;gap:20px}.learning-hint{background:var(--soft);border:1px solid #abcfc5;border-radius:11px;padding:22px}.learning-hint h3{color:var(--accent)}.learning-hint li{margin-bottom:8px;font-size:12px}.lesson-title{margin-bottom:7px}.noscript{padding:20px;position:fixed;inset:0;background:var(--surface);z-index:200}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}.auth-note{padding:30px;max-width:620px;margin:55px auto}.auth-note h1{margin:16px 0}.auth-note p{color:var(--muted)}.course-list{padding:0;list-style:none}.course-list li{padding:10px 0;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;gap:12px;font-size:12px}.inline-input{max-width:140px}.tone-violet{background:#f0edfa;color:#7a67b3}.tone-blue{background:#e9f1fb;color:#437fc1}.tone-amber{background:#fff3d9;color:#a3782b}.heading-actions{flex-shrink:0}.numbered-list{counter-reset:learning;list-style:none;padding:0}.numbered-list li{display:flex;gap:12px;font-size:12px;margin-bottom:14px}.numbered-list li:before{counter-increment:learning;content:counter(learning);width:23px;height:23px;background:var(--soft);border-radius:50%;display:grid;place-items:center;color:var(--accent);font-size:10px;flex-shrink:0}.pill-tabs{display:flex;gap:7px;flex-wrap:wrap;margin-bottom:22px}.pill-tabs button{background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:7px 13px;font-size:10px;color:var(--muted)}.pill-tabs button.active{background:var(--soft);border-color:#7dbdb5;color:var(--accent)}
body[data-theme=dark]{color-scheme:dark;--bg:#101f2a;--surface:#172b39;--ink:#dce8ee;--muted:#9bb2c0;--line:#29414e;--accent:#6cccc0;--soft:#1b3b40;--nav:#0c1b27;--shadow:0 6px 25px #00000012}body[data-theme=dark] .button{color:#0c2f2e}body[data-theme=dark] .button.secondary{color:var(--ink)}body[data-theme=dark] .card:nth-child(3n+2) .card-icon{background:#283448;color:#afbefb}body[data-theme=dark] .card:nth-child(3n+3) .card-icon{background:#413b29;color:#dec082}body[data-theme=dark] .tag.warning,body[data-theme=dark] .note.warning{background:#423b24;color:#e8cc88}body[data-theme=dark] .tag.success{background:#1c4436;color:#8fd9ac}body[data-theme=dark] .tag.error,body[data-theme=dark] .note.error{background:#4b302d;color:#edb3a7}body[data-theme=dark] .result-row.wrong{background:#3a302a}body[data-theme=dark] .field input,body[data-theme=dark] .field textarea,body[data-theme=dark] .field select{border-color:#3d5663}
@media(min-width:1600px){main{padding-left:60px;padding-right:60px}.topbar{padding:0 60px}}
@media(max-width:1150px){.sidebar{width:216px;padding-left:13px;padding-right:13px}.app-body{margin-left:216px;width:calc(100% - 216px)}main{padding:30px 27px}.topbar{padding:0 27px}.grid{grid-template-columns:repeat(2,minmax(0,1fr))}.stats{gap:10px}.stat{padding:15px}.hero{padding:27px}.welcome-grid{grid-template-columns:1fr}.identity{max-width:135px}}
@media(max-width:800px){.workspace{display:block}.sidebar{position:static;width:auto;display:block;padding:19px 20px 10px}.brand{margin:0 0 17px}.workspace-label,.sidebar-bottom{display:none}.sidebar nav{flex-direction:row;gap:6px;overflow-x:auto;padding-bottom:7px}.nav-item{white-space:nowrap;font-size:10px;padding:7px 10px}.nav-symbol{font-size:15px;width:15px}.app-body{margin:0;width:100%}.topbar{height:62px;padding:0 22px}.topbar b{font-size:12px}.private-label{display:none}.identity{font-size:10px;max-width:145px}main{padding:27px 22px}.page-heading{align-items:flex-start}.date-chip{display:none}h1{font-size:27px}.stats{grid-template-columns:repeat(2,1fr)}.hero{grid-template-columns:1fr 130px;padding:25px}.hero h2{font-size:24px}.orbit{width:100px;height:100px}.orbit.two{width:138px;height:76px}.orbit.three{width:76px;height:138px}.hero-graphic{min-height:140px}.orbit-center{width:57px;height:57px;font-size:32px;border-radius:18px}.hero-graphic:after{right:15px}.app-footer{padding:17px 22px}.notice{left:50%}}
@media(max-width:540px){.grid,.grid.two,.form-grid{grid-template-columns:1fr}.hero{grid-template-columns:1fr;padding:24px}.hero-graphic{display:none}.page-heading{display:block}.heading-actions{margin-top:15px}.stat{padding:16px}.stat-label{font-size:10px}.stat small{font-size:9px}.list-row{flex-wrap:wrap;padding:15px}.row-main{flex-basis:65%}.panel{padding:18px}.app-footer span:last-child{display:none}.modal-header{padding:17px}#modal-body{padding:18px}.topbar .app-icon{display:none}.topbar{padding:0 18px}.topbar>div{gap:8px}.identity{max-width:100px}.card{padding:20px}.hero h2{font-size:25px}}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}}