@font-face{font-family:Jakarta;src:url("fonts/jakarta.woff2") format("woff2");font-weight:400 800;font-display:swap}
@font-face{font-family:Plex;src:url("fonts/plex.woff2") format("woff2");font-weight:400;font-display:swap}

:root{color-scheme:light;--canvas:#f6f8f4;--paper:#fff;--ink:#152e27;--muted:#52685f;--line:#dbe5dc;--accent:#225e48;--wash:#eaf3e9;--lime:#e1f8b5;--deep:#142d27;--mono:Plex,"SFMono-Regular",Consolas,monospace;--shadow:0 18px 48px #15382b12}
*,*::before,*::after{box-sizing:border-box}
body{margin:0;background:var(--canvas);color:var(--ink);font:500 15px/1.65 Jakarta,system-ui,sans-serif}
html{scroll-behavior:smooth;scroll-padding-top:92px}
[hidden]{display:none!important}
button,input,select,textarea{font:inherit}
button{cursor:pointer}
button:disabled{opacity:.5;cursor:default}
a{color:inherit;text-decoration:none}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{outline:3px solid #4a9b74;outline-offset:3px}
h1,h2,h3,p{margin:0}
code,pre{font-family:var(--mono)}
.wrap{width:min(1184px,calc(100% - 56px));margin-inline:auto}
.icon{width:19px;height:19px;display:inline-block;vertical-align:middle;flex:none;fill:none;stroke:currentColor;stroke-width:1.65;stroke-linecap:round;stroke-linejoin:round}
.svg-defs{position:absolute;width:0;height:0}
.skip{position:fixed;left:20px;top:12px;padding:9px 16px;background:white;border:2px solid var(--accent);border-radius:8px;z-index:80;transform:translateY(-160%)}
.skip:focus{transform:none}
.topbar{position:sticky;top:0;z-index:5;background:#f6f8f4f5;border-bottom:1px solid var(--line);backdrop-filter:blur(14px)}
.header-inner{height:74px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.brand{display:flex;align-items:center;gap:10px;font-size:16px;font-weight:800;line-height:1.25;letter-spacing:-.035em;white-space:nowrap}
.brand strong{color:#3e775d}
.brand small{display:block;margin-top:4px;font:9px/1.2 var(--mono);color:#60746a;letter-spacing:.13em}
.topbar nav,.header-actions{display:flex;align-items:center;gap:12px}
.topbar nav a{display:flex;align-items:center;gap:7px;padding:8px 12px;border-radius:8px;color:var(--muted);font-size:13px;font-weight:700;white-space:nowrap}
.topbar nav a .icon{width:15px;height:15px}
.topbar nav a:hover{background:var(--wash);color:var(--accent)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:44px;padding:10px 17px;border:1px solid transparent;border-radius:9px;font-size:13px;font-weight:800;line-height:1.35;text-align:center;transition:background .16s,border-color .16s,box-shadow .16s}
.btn.primary{background:var(--accent);color:white;box-shadow:0 5px 11px #16453319}
.btn.primary:hover:not(:disabled){background:#164431}
.btn.outline{color:var(--ink);background:var(--paper);border-color:#d2dfd4}
.btn.outline:hover:not(:disabled){background:var(--wash);border-color:#91b49e}
.btn.menu{display:none}
.eyebrow{display:flex;align-items:center;gap:9px;color:var(--accent);font:400 11px/1.35 var(--mono);letter-spacing:.12em}
.eyebrow>span:not(.status-dot){border-radius:4px;background:#e4eee3;padding:3px 5px;letter-spacing:0}
.hero{position:relative;display:grid;grid-template-columns:1fr 1fr;min-height:425px;margin-top:31px;border:1px solid #285143;border-radius:23px;background:radial-gradient(ellipse at 92% 35%,#2d6855 0,transparent 58%),linear-gradient(128deg,#162f29,#173c32 72%,#1d483b);overflow:hidden;color:#f4fbf5}
.hero-copy{position:relative;z-index:1;padding:53px 12px 52px 47px}
.hero-kicker{display:inline-flex;background:#d7ffcd13;border:1px solid #cef5c938;border-radius:30px;padding:7px 11px;color:#d8f2d4;font-size:10px}
.status-dot{width:7px;height:7px;border-radius:50%;background:#c7f28b;box-shadow:0 0 9px #cbfa82a8}
.hero h1{font-size:clamp(39px,5.2vw,72px);font-weight:800;line-height:1.06;letter-spacing:-.071em;margin:17px 0 17px}
.hero h1 em{font-style:normal;color:#d8f7ac}
.hero-lede{color:#c7ded2;max-width:450px;font-size:15px;line-height:1.72}
.hero-buttons{display:flex;flex-wrap:wrap;gap:11px;margin-top:23px}
.hero-buttons .btn{min-height:48px}
.hero-buttons .primary{background:var(--lime);color:#203f29}
.hero-buttons .primary:hover{background:#efffce}
.hero-buttons .outline{background:#d8f7e009;border-color:#d9f6df52;color:#e6f5eb}
.hero-buttons .outline:hover{background:#e2ffed21;border-color:#d9f6df80}
.hero-visual{position:relative;display:grid;place-items:center;padding:0 31px 0 10px;min-width:0}
.orbits{position:absolute;inset:0;width:100%;height:100%;stroke:#b4e7a75e;stroke-width:1.1}
.hero-visual::before{content:"";position:absolute;inset:0;background:radial-gradient(circle,#d9f9c33d 1px,transparent 1.5px);background-size:17px 17px;mask-image:radial-gradient(ellipse,#000 9%,transparent 74%);opacity:.75}
.code-window{position:relative;width:min(100%,421px);background:#142922;border:1px solid #72947e;border-radius:13px;box-shadow:0 24px 55px #081c1699;overflow:hidden;transform:rotate(-4deg)}
.window-head{height:43px;background:#223a32;display:flex;align-items:center;gap:6px;padding:0 15px;border-bottom:1px solid #78928455;font:11px var(--mono);color:#d0e3d6}
.window-head i{width:7px;height:7px;border-radius:50%;background:#69867b}
.window-head i:first-child{background:#e5a783}.window-head i:nth-child(2){background:#e6cc85}.window-head i:nth-child(3){background:#a9d993}
.window-head span{margin-left:9px}.window-head b{margin-left:auto;color:#d7f3ba;font:10px var(--mono);background:#afdea02b;padding:4px 7px;border-radius:4px}
.code-lines{padding:20px 14px;font:clamp(9px,1.05vw,13px)/2.1 var(--mono);color:#e4f2e9;white-space:nowrap}
.code-lines>div{display:flex;gap:13px}.code-lines small{font:inherit;color:#8ca99b}.syntax-comment{color:#94ac9e}.syntax-str{color:#e4f1ab}.syntax-kw{color:#bca9fd}.syntax-fn{color:#a6ebcf}
.terminal{display:grid;gap:5px;padding:13px 16px;background:#10231d;border-top:1px solid #78928455;font:12px var(--mono)}
.terminal span{font-size:9px;color:#a7c0b2;letter-spacing:.12em}.terminal strong{font-weight:400;color:#d1f5ad}
.float-chip{position:absolute;padding:7px 10px;border:1px solid #80a68b;border-radius:7px;background:#234a3d;box-shadow:0 10px 28px #0c271c66;color:#e4f8e7;font:10px var(--mono);letter-spacing:.07em;z-index:1;white-space:nowrap}
.float-chip span{color:#d9f5a6;margin-right:4px}
.chip-top{right:11%;top:15%;transform:rotate(7deg)}.chip-bottom{left:6%;bottom:15%;transform:rotate(-6deg)}
.stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));margin:19px 0 0;padding:16px 8px;background:var(--paper);border:1px solid var(--line);border-radius:13px;box-shadow:0 5px 18px #17382b07}
.stats>div{display:flex;align-items:center;gap:12px;padding:5px 15px;border-right:1px solid var(--line);min-width:0}.stats>div:last-child{border:0}
.stat-icon{display:grid;place-items:center;width:40px;height:40px;flex:none;border-radius:9px;background:var(--wash);color:#39765a}
.stats strong,.stats small{display:block}.stats strong{font-size:19px;font-weight:800;letter-spacing:-.045em;line-height:1.2}.stats small{margin-top:4px;color:var(--muted);font-size:12px}
.section{padding-top:61px}
.section-heading{display:flex;align-items:end;justify-content:space-between;gap:18px;margin-bottom:21px}
.section-heading h2{font-size:clamp(28px,3.6vw,47px);font-weight:800;letter-spacing:-.065em;line-height:1.13;margin:8px 0}
.section-heading p{color:var(--muted);font-size:14px;max-width:62ch}
.search{display:flex;align-items:center;gap:8px;border:1px solid #ccdacf;background:white;border-radius:9px;padding:0 12px;color:var(--accent)}
.search:focus-within{outline:2px solid #69a384;outline-offset:2px}
.search input{border:0;padding:10px 0;background:transparent;outline:none;width:min(190px,100%);color:var(--ink);font-size:13px}
.search input:focus-visible{outline:none}
.curriculum-layout{display:grid;grid-template-columns:minmax(245px,27%) minmax(0,1fr);gap:14px}
.domain-list{display:grid;gap:5px;align-content:start;background:#eef3ed;border:1px solid var(--line);border-radius:13px;padding:9px}
.domain-button{display:flex;align-items:center;gap:8px;border:1px solid transparent;border-radius:7px;padding:8px;text-align:left;background:transparent;color:#385348;min-height:42px}
.domain-button:hover{background:#e0ece0}.domain-button.active{background:#ddecdf;border-color:#b9d4bf;color:#163e2f}
.domain-button b{font-size:12px}.domain-button span{font:11px var(--mono);color:#536e61}.domain-button small{font:10px var(--mono);margin-left:auto;color:#587267;white-space:nowrap}
.domain-detail{border:1px solid var(--line);border-radius:13px;background:var(--paper);padding:24px;min-width:0}
.domain-detail h3{font-size:24px;letter-spacing:-.045em;line-height:1.25;margin:8px 0}.domain-detail p{font-size:13px;color:var(--muted)}
.topic-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;margin:19px 0}
.topic-button{display:flex;align-items:center;gap:8px;width:100%;min-height:47px;padding:8px 11px;border:1px solid #e0e9e1;border-radius:7px;background:#f7f9f6;color:#294a3b;text-align:left;font-size:12px;font-weight:750;line-height:1.35}
.topic-button:hover{border-color:#9dbea7;background:#eef7ed}
.topic-button span:first-child{font:11px var(--mono);color:var(--accent);flex:none}
.topic-button span:last-child{margin-left:auto;color:var(--accent)}
.domain-foot{border-top:1px solid var(--line);padding-top:11px;color:var(--muted);font:11px var(--mono)}
.test-grid,.plan-grid{display:grid;gap:12px;grid-template-columns:repeat(3,minmax(0,1fr))}
.plan-grid{grid-template-columns:repeat(4,minmax(0,1fr))}
.test-card,.plan-card{display:flex;flex-direction:column;align-items:flex-start;gap:8px;border:1px solid var(--line);border-radius:12px;background:var(--paper);padding:20px}
.plan-card.selected{background:#edf6ea;border-color:#99bda3}
.test-card h3,.plan-card h3{font-size:21px;font-weight:800;line-height:1.25;letter-spacing:-.045em}
.test-card p,.plan-card p{font-size:13px;color:var(--muted);margin-bottom:8px}
.pill{font:10px var(--mono);letter-spacing:.075em;background:var(--wash);color:#345f4c;border-radius:5px;padding:4px 7px}
.test-card .text-btn,.plan-card .btn{margin-top:auto}
.text-btn{border:0;background:transparent;color:var(--accent);font-size:13px;font-weight:800;text-align:left;padding:5px 0}
.text-btn:hover{text-decoration:underline;text-underline-offset:4px}
.editor-card{overflow:hidden;border:1px solid #345849;border-radius:13px;background:#142b23;box-shadow:var(--shadow)}
.editor-top,.editor-bottom{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:11px 16px;background:#203c31;color:#d9ece1;font:12px var(--mono)}
.editor-top i{display:inline-block;width:7px;height:7px;border-radius:50%;background:#c9f195;margin-right:7px}.editor-top span:last-child{font-size:10px}
.lab-editor{display:block;width:100%;min-height:200px;resize:vertical;padding:15px;border:1px solid #355b49;border-radius:8px;background:#142b23;color:#edf6ef;tab-size:4;font:13px/1.65 var(--mono)}
.editor-card .lab-editor{min-height:120px;border:0;border-radius:0}.editor-card .lab-editor:focus-visible{outline-offset:-3px}
.editor-bottom .primary{color:#21412d;background:var(--lime);min-height:37px}.editor-bottom .primary:hover:not(:disabled){background:#efffce}
.editor-output,.lab-output{min-height:64px;max-height:290px;overflow:auto;margin:0;padding:13px 16px;white-space:pre-wrap;overflow-wrap:anywhere;background:#10221b;color:#d7f7b2;font:13px/1.65 var(--mono)}
.lab-output{border-radius:8px}
.footer{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-top:65px;padding:22px 0 27px;border-top:1px solid var(--line);color:var(--muted);font-size:12px}
.footer .brand{color:var(--ink);font-size:14px}.footer .icon{width:14px;height:14px}.footer a:hover{color:var(--accent)}
.modal-backdrop{position:fixed;inset:0;z-index:10;display:grid;place-items:center;padding:22px;background:#102820a8;backdrop-filter:blur(4px)}
.modal{position:relative;width:min(100%,620px);max-height:100%;overflow:auto;overscroll-behavior:contain;padding:28px;border:1px solid #cbdcd1;border-radius:16px;background:#fbfcfa;box-shadow:0 26px 80px #0a241f48}
.modal h2{margin:5px 27px 8px 0;font-size:clamp(24px,4vw,36px);line-height:1.18;letter-spacing:-.055em}
.modal h2:focus{outline:none}.modal>p{color:var(--muted);font-size:13px}
.modal-close{position:absolute;top:15px;right:15px;width:38px;height:38px;display:grid;place-items:center;border:1px solid var(--line);border-radius:8px;color:var(--ink);background:white;font:24px/1 system-ui}
.modal-close:hover{background:var(--wash)}
.dashboard-modal{width:min(100%,775px)}
.progress-track{display:block;width:100%;height:12px;margin:13px 0 10px;appearance:none;border:0;border-radius:10px;background:#e3ebe3;overflow:hidden}
.progress-track::-webkit-progress-bar{background:#e3ebe3}.progress-track::-webkit-progress-value{background:#3a8a63}.progress-track::-moz-progress-bar{background:#3a8a63}
.dashboard-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-bottom:15px}
.dashboard-stats div{padding:10px;background:#edf4ec;border-radius:8px;color:var(--muted);font-size:12px}
.dashboard-stats b{display:block;font-size:20px;color:var(--ink);line-height:1.4}
.dashboard-actions,.lesson-actions,.lab-toolbar,.lab-actions,.quiz-controls{display:flex;flex-wrap:wrap;align-items:center;gap:9px}
.plan-select{display:flex;align-items:center;gap:8px;color:var(--muted);font-size:13px}
select,.lab-input textarea{border:1px solid #cadace;border-radius:7px;background:white;color:var(--ink);padding:8px;font-size:13px}
.roadmap-title{margin:21px 0 8px;font-size:16px}
.daily-roadmap{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:7px;max-height:235px;overflow:auto;padding:4px 4px 4px 2px}
.day-card{background:white;border:1px solid var(--line);border-radius:8px;padding:9px;text-align:left;color:var(--muted);font-size:11px;line-height:1.45}
.day-card:hover,.day-card.done{background:#e7f4e7;border-color:#a6c6ad}
.day-card b{display:block;font:11px var(--mono);color:var(--accent);margin-bottom:4px}
.dashboard-note{margin-top:15px}
.lesson-modal,.lab-modal{width:min(100%,890px)}
.lesson-content{font-size:14px;color:#344e43}
.lesson-learning-map,.teaching-level-panel,.lesson-warning,.lesson-practice,.lesson-finish-note{margin:15px 0;padding:15px;border:1px solid var(--line);border-radius:10px;background:#edf5eb}
.lesson-label{display:block;color:#356a50;font:11px var(--mono);letter-spacing:.09em;margin-bottom:5px}
.teaching-level-panel{display:grid;grid-template-columns:1fr auto;gap:8px 15px;align-items:center;background:white}
.level-helper{font-size:12px;color:var(--muted)}
.teaching-levels{display:flex;gap:5px}
.teaching-level{display:flex;align-items:center;gap:5px;border:1px solid #d2dfd4;border-radius:7px;padding:7px;color:var(--ink);background:#f7f9f6;font-size:12px;font-weight:750}
.teaching-level b{display:grid;place-items:center;width:19px;height:19px;border-radius:4px;background:#e4eee3;color:#345f4c;font:11px var(--mono)}
.teaching-level:hover,.teaching-level.active{background:#e7f4e7;border-color:#8eb79c}
.teaching-level.active b{background:#225e48;color:white}
.lesson-section{border-top:1px solid var(--line);padding-top:15px;margin-top:15px}
.lesson-section h3{font-size:19px;letter-spacing:-.035em;margin-bottom:4px}
.lesson-explanation{color:#223f32;font-size:16px;line-height:1.8}
.lesson-section pre{padding:13px;border-radius:8px;background:#142c24;color:#dbf6ba;font:13px/1.65 var(--mono);overflow:auto}
.lesson-walkthrough{margin:6px 0 0;list-style:none;padding:0;display:grid;gap:7px}
.lesson-walkthrough li{display:flex;gap:9px;align-items:flex-start}
.walk-number{display:grid;place-items:center;flex:0 0 21px;height:21px;background:#e5eee3;border-radius:5px;color:var(--accent);font:11px var(--mono)}
.lesson-warning{background:#faf1e1;border-color:#e5d4b6;color:#614623}
.lesson-warning .lesson-label{color:#795723}.lesson-warning ul{margin:6px 0 0;padding-left:19px}
.lesson-practice .btn{margin-top:8px;margin-right:4px}.lesson-solution{margin-top:12px}
.vocab-grid{display:grid;grid-template-columns:1fr 1fr;gap:7px}
.vocab-item{display:grid;gap:3px;border:1px solid var(--line);border-radius:8px;padding:9px;background:white;font-size:12px}
.lesson-finish-note{font-size:12px}
.lesson-actions{position:sticky;bottom:-29px;justify-content:space-between;margin:15px -1px 0;padding:10px 0 13px;border-top:1px solid var(--line);background:#fbfcfa}
.lab-toolbar{margin:14px 0 9px}
.lab-input{margin-top:10px;color:var(--muted);font-size:12px}.lab-input summary{cursor:pointer;font-weight:750}.lab-input label{display:block;margin-top:5px}.lab-input textarea{display:block;width:100%;margin-top:5px}
.lab-status{padding:8px 0;color:var(--muted);font-size:12px}.lab-actions{justify-content:space-between;margin-top:10px;font:11px var(--mono);color:var(--muted)}
.quiz-progress{height:7px;margin:14px 0;border-radius:6px;background:#e3ebe3;overflow:hidden}.quiz-progress span{display:block;height:100%;background:#448d69}
.quiz-question{font-weight:800;margin:10px 0}
.quiz-choices{display:grid;gap:7px}.quiz-choice{padding:10px;border:1px solid var(--line);border-radius:8px;background:white;color:var(--ink);text-align:left;font-size:13px}
.quiz-choice:hover,.quiz-choice.selected{background:#e5f3e6;border-color:#a3c9ab}.quiz-choice:disabled{opacity:.82}
.quiz-feedback{min-height:31px;margin:8px 0;color:var(--accent);font-size:13px}
.quiz-controls{justify-content:space-between}
@media(max-width:980px){
  .hero-copy{padding-left:32px}.hero{min-height:385px}.hero-visual{padding-right:25px}.chip-top{top:18%}.chip-bottom{bottom:18%}
  .stats>div{padding-inline:11px;gap:8px}.stat-icon{width:32px;height:32px}
}
@media(max-width:760px){
  .wrap{width:calc(100% - 32px)}.header-inner{height:65px}.topbar nav{display:none;position:absolute;top:64px;inset-inline:0;background:var(--canvas);border-bottom:1px solid var(--line);padding:10px 16px}
  .topbar nav.open{display:flex;flex-wrap:wrap}.btn.menu{display:inline-flex;padding:8px 10px}
  .hero{grid-template-columns:1fr;margin-top:19px}.hero-copy{padding:29px 22px 5px}.hero h1{font-size:clamp(43px,9vw,65px)}.hero-visual{min-height:255px;padding:20px 26px 30px}.code-lines{font-size:clamp(8px,2.2vw,13px);padding:14px 10px}.chip-top{top:7%;right:7%}.chip-bottom{bottom:9%;left:7%}
  .stats{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.stats>div:nth-child(2){border:0}
  .section{padding-top:43px}.section-heading{align-items:start;flex-wrap:wrap}.curriculum-layout{grid-template-columns:1fr}.domain-list{grid-template-columns:repeat(2,minmax(0,1fr))}
  .domain-detail{padding:15px}.plan-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.test-grid{grid-template-columns:1fr}.test-card,.plan-card{padding:14px}
  .modal-backdrop{padding:10px}.modal{padding:17px}.lesson-actions{bottom:-18px}.teaching-level-panel{grid-template-columns:1fr}.lesson-explanation{font-size:14px}.daily-roadmap{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media(max-width:410px){
  .header-actions{gap:5px}#progressOpen{padding:7px 9px;gap:5px}.brand{font-size:13px}.brand small{font-size:8px}.header-inner{gap:5px}
  .topic-grid{grid-template-columns:1fr}.domain-button small{display:none}.domain-button b{font-size:11px}.stats small{font-size:10px}
  .lesson-actions .btn{padding-inline:9px;min-height:40px}.vocab-grid{grid-template-columns:1fr}.footer{flex-wrap:wrap}
}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition:none!important}}
.login-page{display:grid;justify-items:center;padding:55px 0;gap:24px}.login-card{width:min(480px,100%);overflow:visible;max-height:none}.login-card h1{font-size:36px;letter-spacing:-.05em}.login-card p{font-size:13px;color:var(--muted);margin:12px 0}form{display:grid;gap:14px;margin:20px 0}form label,#registerFields{display:grid;gap:7px}form input{width:100%;padding:10px;border:1px solid #b8cdbc;border-radius:7px;background:white;color:var(--ink)}.ghost{background:white;border-color:var(--line);color:var(--ink)}#adminMessage,#loginMessage{overflow-wrap:anywhere}#adminLogin{max-height:none}#newCode{color:var(--accent)!important}table{font-size:13px!important}#codeTable>div{font-size:13px!important}.topbar>.brand{margin:12px 24px}.topbar>.btn{margin-right:24px}