/* A calm workshop: cream paper, deep green controls, bright project colours. */
:root{--ink:#163e36;--muted:#557369;--paper:#fffdf5;--line:#dce4d6;--green:#087b52;--lime:#dcf580;--peach:#ffdfc9;--lavender:#e9e0ff;--blue:#d9edf7;--shadow:0 4px 0 #163e36;--mono:Consolas,'Courier New',monospace}
*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font:650 17px/1.5 'Trebuchet MS',system-ui,sans-serif}button,input,textarea,select{font:inherit;color:inherit}button,a,input,select,textarea{-webkit-tap-highlight-color:transparent}button,.button{min-height:58px;display:inline-flex;justify-content:center;align-items:center;gap:9px;padding:11px 18px;border:2px solid var(--ink);border-radius:16px;background:white;font-weight:800;cursor:pointer;text-decoration:none;box-shadow:var(--shadow)}button:hover,.button:hover{filter:brightness(.97);transform:translateY(-1px)}button:active,.button:active{transform:translateY(3px);box-shadow:none}button:disabled{opacity:.45;cursor:default;transform:none}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible,[tabindex]:focus-visible{outline:4px solid #ce650c;outline-offset:4px}input,select{min-height:58px;max-width:100%;padding:10px 14px;border:2px solid var(--ink);border-radius:13px;background:white}textarea{resize:vertical}h1,h2,h3,p{margin:0 0 13px}h1{font-size:clamp(34px,4.5vw,58px);line-height:1.08;letter-spacing:-1.9px}h2{font-size:29px;line-height:1.2;letter-spacing:-.7px}h3{font-size:21px;line-height:1.3}a{color:var(--green)}svg{width:100%;height:100%;display:block}[hidden]{display:none!important}.skip{position:fixed;top:-90px;left:15px;background:white;z-index:50;padding:15px}.skip:focus{top:10px}.primary{background:var(--green);color:white}.lime{background:var(--lime)}.plain{background:transparent;box-shadow:none;border-color:var(--line)}.small{font-size:14px}.muted{color:var(--muted)}.eyebrow{font-size:12px;letter-spacing:2px;text-transform:uppercase;font-weight:800;margin-bottom:10px}.row{display:flex;gap:12px;align-items:center;flex-wrap:wrap}.between{justify-content:space-between}.stack{display:grid;gap:17px}.pill{display:inline-flex;align-items:center;gap:8px;border:1px solid var(--line);padding:8px 13px;border-radius:30px;background:white;white-space:nowrap}.app-shell{display:grid;grid-template-columns:218px minmax(0,1fr);min-height:100dvh}.sidebar{position:fixed;inset:0 auto 0 0;width:218px;background:var(--ink);color:#eff7e5;padding:29px 18px;display:flex;flex-direction:column;z-index:10}.brand{display:flex;align-items:center;gap:11px;color:inherit;text-decoration:none;font-size:21px;line-height:1.1;letter-spacing:-.7px;margin-bottom:39px}.brand-icon{width:48px;height:48px;flex-shrink:0;transform:rotate(-8deg)}.brand small{display:block;font-size:11px;letter-spacing:1.8px;font-weight:650;margin-top:6px;color:#b2cfb8}.nav{display:grid;gap:11px}.nav a{min-height:58px;display:flex;align-items:center;gap:12px;color:#d9e9d7;padding:11px 15px;border-radius:14px;text-decoration:none;font-size:16px}.nav a span{font-size:22px}.nav a.active{background:var(--lime);color:var(--ink)}.nav a:hover{background:#ffffff18}.nav a.active:hover{background:var(--lime)}.sidebar-bottom{margin-top:auto;padding-top:25px;font-size:13px;color:#c0d3c0}.sidebar-bottom a{color:#e7f3d5;display:block;padding:14px 5px;min-height:56px}.side-robo{width:74px;height:87px;opacity:.9;margin:0 0 14px 15px}.main-area{grid-column:2;min-width:0}.topbar{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;padding:19px 35px;border-bottom:1px solid var(--line);min-height:93px}.breadcrumb{font-size:15px;color:var(--muted)}.top-tools{display:flex;align-items:center;gap:9px;flex-wrap:wrap}.top-tools button{font-size:14px;box-shadow:none;padding:8px 12px;min-height:56px}.content{max-width:1280px;margin:auto;padding:32px 36px 50px;min-width:0}.hero{display:grid;grid-template-columns:1.2fr .8fr;gap:20px;align-items:center;border:2px solid var(--ink);border-radius:29px;background:#e7f0d8;padding:31px 34px;margin-bottom:28px;overflow:hidden}.hero p{font-size:19px;max-width:460px}.hero .primary{font-size:20px;padding:15px 25px}.hero-visual{min-height:210px;position:relative;display:grid;place-items:center}.hero-robo{width:135px;height:170px;z-index:1;animation:bob 3s ease-in-out infinite}.hero-orbit{position:absolute;border:2px dashed #8caf83;border-radius:50%;width:220px;height:180px;transform:rotate(-18deg)}.float-token{position:absolute;min-width:56px;min-height:56px;border:2px solid var(--ink);border-radius:16px;background:white;display:grid;place-items:center;font:800 26px var(--mono);box-shadow:0 3px 0 #163e3633}.float-token.one{left:10%;top:6%;background:var(--peach);transform:rotate(-10deg)}.float-token.two{right:6%;top:11%;background:var(--lavender);transform:rotate(9deg)}.float-token.three{right:16%;bottom:1%;background:var(--lime);transform:rotate(-8deg)}.section-heading{display:flex;align-items:center;justify-content:space-between;gap:15px;flex-wrap:wrap;margin:27px 0 17px}.section-heading h2{margin:0}.project-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.project-card{border:2px solid var(--ink);border-radius:24px;overflow:hidden;background:white;display:flex;flex-direction:column;min-width:0}.project-art{height:170px;position:relative;display:grid;place-items:center;border-bottom:2px solid var(--ink);overflow:hidden}.project-card:nth-child(1) .project-art{background:#f8dbb8}.project-card:nth-child(2) .project-art{background:#dcecbf}.project-card:nth-child(3) .project-art{background:#e4dcf9}.project-card:nth-child(4) .project-art{background:#d4e9f5}.project-copy{padding:21px;display:flex;flex-direction:column;flex:1}.project-copy>p{color:var(--muted);font-size:16px}.project-copy .button{width:100%;margin-top:auto}.tool-tags{display:flex;gap:7px;flex-wrap:wrap;margin-bottom:15px}.tool-tag{font:800 12px var(--mono);background:#f0f3e9;border:1px solid #d2ddcb;padding:5px 9px;border-radius:7px}.progress{height:10px;background:#eef2e6;border:1px solid #bbccba;border-radius:20px;overflow:hidden;margin:12px 0}.progress>i{display:block;height:100%;background:var(--green)}.score-art{background:#183e34;color:#dcf580;border:4px solid #fff;border-radius:19px;padding:13px 25px;text-align:center;transform:rotate(-4deg);box-shadow:0 7px 0 #163e3622}.score-art small{font-size:11px;letter-spacing:3px}.score-art b{display:block;font:800 47px/1.2 var(--mono)}.robot-art{width:95px;height:120px;transform:rotate(6deg)}.web-art{width:195px;background:#fffdf5;border:2px solid var(--ink);border-radius:13px;transform:rotate(-4deg);overflow:hidden;box-shadow:0 5px 0 #163e3622}.web-art .window-bar{background:var(--ink);color:#d8f477;letter-spacing:3px;padding:1px 10px;font-size:13px}.web-art .mini-page{padding:15px;background:#ffe9a3}.mini-page b{display:block;font-size:21px}.mini-page span{display:inline-block;font-size:12px;background:#ae92de;border-radius:8px;padding:5px 12px;margin-top:5px}.data-art{border:2px solid var(--ink);background:white;border-radius:12px;padding:8px 15px;transform:rotate(4deg);font:15px/1.7 var(--mono);box-shadow:0 5px 0 #163e3622}.data-art b{color:var(--green)}.home-bottom{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:25px}.card{border:2px solid var(--line);border-radius:21px;background:white;padding:23px;min-width:0}.yellow{background:#fff0c1;border-color:#e8d99f}.purple{background:#ece5ff;border-color:#d9c9ef}.daily-ticks{display:flex;gap:11px;margin:15px 0 0}.tick{height:48px;width:48px;border:2px solid #a9bc9b;border-radius:13px;display:grid;place-items:center;font-size:23px;background:#ffffff88}.tick.done{background:var(--green);color:white;border-color:var(--green)}.tool-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}.tool-card{align-items:flex-start;text-align:left;flex-direction:column;box-shadow:none;border-color:var(--line);padding:18px;min-width:0}.tool-card>span{font-size:30px}.tool-card b{font-size:20px}.tool-card small{font-weight:650}.page-head{display:flex;justify-content:space-between;align-items:start;gap:20px;flex-wrap:wrap;margin-bottom:25px}.page-head p{max-width:670px}.lesson-top{display:flex;justify-content:space-between;align-items:center;gap:15px;margin-bottom:23px;flex-wrap:wrap}.lesson-dots{display:flex;gap:8px;align-items:center}.lesson-dots a{width:40px;height:40px;border:2px solid #b8cbb3;display:grid;place-items:center;border-radius:50%;text-decoration:none;background:white;font-size:14px}.lesson-dots a.done{background:var(--green);color:white;border-color:var(--green)}.lesson-dots a.current{outline:3px solid var(--ink);outline-offset:3px;background:var(--lime);color:var(--ink)}.lesson-layout{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(260px,.85fr);gap:23px;align-items:start}.lesson-main,.lesson-side{min-width:0}.lesson-prompt{font-size:clamp(26px,3vw,39px);line-height:1.2;letter-spacing:-.8px;margin-bottom:14px}.mascot-note{display:flex;gap:12px;align-items:center;background:#eff4e5;border:1px solid #d6e2cc;border-radius:17px;padding:13px 15px;margin-bottom:19px}.mascot-note svg{width:40px;height:49px;flex-shrink:0}.mascot-note p{margin:0;font-size:16px}.visual-stage{position:relative;min-height:180px;border:2px solid var(--ink);border-radius:23px;padding:23px;background:#e3edd4;display:flex;align-items:center;justify-content:center;gap:20px;margin:18px 0;flex-wrap:wrap;overflow:hidden}.visual-stage .big-icon{font-size:65px}.variable-box{border:3px solid var(--ink);border-radius:16px;background:var(--lime);padding:10px 28px;text-align:center;min-width:120px;box-shadow:0 5px 0 #163e3622}.variable-box>small{font:700 15px var(--mono)}.variable-box>b{font:800 44px/1.4 var(--mono);display:block}.visual-output{border:2px solid #fff6;border-radius:14px;padding:10px 20px;background:#163e36;color:var(--lime);font:22px/1.5 var(--mono);white-space:pre-wrap;max-width:100%;overflow-wrap:anywhere}.loop-balls{display:flex;gap:10px;flex-wrap:wrap;align-items:center}.loop-balls span{font-size:37px;opacity:.25;transition:opacity .2s,transform .2s}.loop-balls span.lit{opacity:1;transform:translateY(-6px)}.branch-path{display:flex;gap:12px;align-items:center;flex-wrap:wrap}.branch{padding:15px;border:2px solid #abc0a2;border-radius:14px;background:#fff9}.branch.chosen{background:var(--lime);border-color:var(--ink);box-shadow:0 3px 0 var(--ink)}.code-window{border:2px solid var(--ink);border-radius:19px;overflow:hidden;background:#102722;margin:17px 0}.window-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:11px 17px;background:#1c3e34;color:#c9deca;font:13px var(--mono)}.window-head span:first-child{color:#dcf580;letter-spacing:3px}.code-window label{font-size:13px;color:#b5d0bd;display:block;padding:13px 17px 0}.code-editor{width:100%;min-height:210px;display:block;background:#102722;color:#e1fbb1;border:0;padding:15px 18px;font:17px/1.8 var(--mono);tab-size:4;white-space:pre;overflow:auto;border-radius:0}.code-editor:focus{outline:0;box-shadow:inset 0 0 0 3px #c1e274}.code-help{font-size:12px;background:#1c3e34;color:#b9d1bf;margin:0;padding:10px 16px}.code-read{padding:15px 0;color:#dcf580;font:16px/1.8 var(--mono);overflow:auto;white-space:pre;max-height:350px}.code-line{display:block;padding:0 17px;border-left:4px solid transparent}.code-line.active{background:#385b3d;border-left-color:var(--lime)}.line-number{display:inline-block;width:24px;color:#8caa94;font-size:12px;user-select:none}.choices{display:grid;gap:12px;margin:20px 0}.choice{width:100%;text-align:left;justify-content:flex-start;box-shadow:0 3px 0 #163e3622;border-color:#b8cbb3;min-height:66px}.choice.selected{background:var(--lime);border-color:var(--ink);box-shadow:var(--shadow)}kbd{border:1px solid #afc2a8;border-radius:6px;min-width:27px;text-align:center;background:white;padding:2px 5px;font:700 13px var(--mono)}.action-bar{display:flex;gap:10px;flex-wrap:wrap;margin:18px 0}.action-bar .primary{flex:1;min-width:150px;font-size:20px}.action-bar button{min-width:58px}.result{border:2px solid var(--ink);border-radius:19px;overflow:hidden;margin:18px 0;background:#0c211b;color:#dbf69d}.result-title{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;background:#1b3e31;padding:12px 16px;font-size:14px}.result pre{font:18px/1.7 var(--mono);white-space:pre-wrap;overflow-wrap:anywhere;margin:0;padding:18px;min-height:90px;max-height:300px;overflow:auto}.result iframe{display:block;border:0;background:white;width:100%;min-height:240px}.feedback{border:2px solid #c8d9bd;border-radius:18px;background:#edf5de;padding:19px;margin:19px 0}.feedback.success{background:#dff1c8;border-color:#87b872}.feedback h3{margin-bottom:7px}.feedback p{font-size:16px}.feedback .row{margin-top:13px}.why-box{border-left:4px solid var(--green);padding:12px 16px;background:#f6f8ef;border-radius:0 12px 12px 0;margin:15px 0}.why-box p:last-child{margin:0}.hint-box{border:2px dashed #a78533;background:#fff1be;border-radius:15px;padding:17px;margin:15px 0}.hint-box .small{margin-bottom:6px}.word-card code{font:16px/1.6 var(--mono);background:#edf3e5;padding:3px 6px;border-radius:5px}.word-card p{font-size:16px}.word-tabs{display:flex;gap:8px;flex-wrap:wrap;margin:10px 0}.word-tabs button{min-height:56px;font:14px var(--mono);padding:8px 10px;box-shadow:none;border-color:var(--line)}.word-tabs button.selected{background:var(--lime);border-color:var(--ink)}.trace-controls{display:flex;gap:8px;flex-wrap:wrap;margin:12px 0}.trace-controls button{font-size:14px;padding:8px 12px;box-shadow:none}.trace-variable{display:inline-flex;align-items:center;gap:7px;border:1px solid #aec4a4;border-radius:10px;background:#f0f6dd;padding:6px 10px;font:14px var(--mono);margin:4px}.trace-current{font-size:14px;color:var(--muted);min-height:23px}.table-scroll{overflow:auto}.data-table{border-collapse:collapse;min-width:100%;font:14px/1.6 var(--mono);text-align:left}.data-table th,.data-table td{padding:10px 12px;border-bottom:1px solid #9eb8a544}.data-table th{background:#28513d;color:#dcf580}.data-table tr.match{background:#dff2c7;color:var(--ink)}.data-source{margin-top:17px}.data-source table th{background:#edf4e4;color:var(--ink)}.tab-row{display:flex;gap:9px;flex-wrap:wrap;margin:18px 0}.tab-row button{box-shadow:none;border-color:var(--line)}.tab-row button.active{background:var(--lime);border-color:var(--ink)}.practice-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.practice-card{padding:18px;text-decoration:none;color:var(--ink);border:2px solid var(--line);border-radius:18px;background:white;display:flex;flex-direction:column;gap:6px;min-height:125px}.practice-card b{font-size:18px}.practice-card.done{background:#edf6d9;border-color:#c6dbad}.badge-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:17px}.badge-card{text-align:center;min-height:190px}.badge-icon{font-size:50px;display:block;margin-bottom:13px}.badge-card.locked .badge-icon{filter:grayscale(1);opacity:.3}.creation-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.creation-card{border:2px solid var(--ink);border-radius:20px;padding:22px;background:white;min-width:0}.creation-card .creation-icon{font-size:40px}.creation-card h3{overflow-wrap:anywhere}.creation-card pre{font:14px/1.7 var(--mono);white-space:pre-wrap;overflow-wrap:anywhere;max-height:100px;overflow:hidden;background:#eef4e5;padding:12px;border-radius:10px}.empty-state{padding:45px;text-align:center;background:#edf3e2;border:2px dashed #a8c19c;border-radius:24px}.empty-state>span{font-size:60px}.parent-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}.parent-grid label{display:block;margin:12px 0 7px}.parent-grid input{width:100%}.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:20px 0}.stat{background:white;border:2px solid var(--line);border-radius:18px;padding:18px}.stat b{font-size:35px;display:block}.save-form{display:flex;gap:10px;flex-wrap:wrap;margin:20px 0}.save-form input{flex:1;min-width:160px}.extra-editor label{display:block;margin:10px 0}.extra-editor textarea{width:100%;min-height:120px;font:15px/1.7 var(--mono);padding:14px;border:2px solid var(--line);border-radius:13px;background:white}.runtime-note{font-size:13px;color:var(--muted);margin:20px 0}.runtime-note summary{cursor:pointer;min-height:56px;display:flex;align-items:center}.dialog{position:fixed;inset:0;background:#0d2823ba;display:grid;place-items:center;z-index:40;padding:20px;overflow:auto}.dialog-card{width:100%;max-width:530px;border:3px solid var(--ink);border-radius:27px;background:var(--paper);padding:31px;box-shadow:0 10px 0 #0b241f55}.dialog-card .big-icon{font-size:55px;display:block;margin-bottom:15px}.dialog-card button{margin:6px 6px 0 0}.dialog-card input{width:100%;margin:10px 0}.toast{position:fixed;bottom:25px;left:50%;transform:translateX(-50%);z-index:45;background:var(--ink);color:white;border-radius:16px;padding:13px 22px;max-width:90%;text-align:center}.storage-note{font-size:12px;color:var(--muted);text-align:center;padding:15px}.confetti{position:fixed;inset:0;pointer-events:none;z-index:42;overflow:hidden}.confetti i{position:absolute;width:11px;height:17px;top:-20px;animation:fall 2.6s ease-in forwards}.mobile-nav{display:none}.fade-in{animation:appear .2s ease-out}@keyframes bob{50%{transform:translateY(-7px) rotate(3deg)}}@keyframes appear{from{opacity:.4;transform:translateY(5px)}to{opacity:1;transform:translateY(0)}}@keyframes fall{to{transform:translateY(110vh) rotate(650deg)}}
@media(max-width:1120px){.sidebar{width:190px;padding:25px 13px}.app-shell{grid-template-columns:190px minmax(0,1fr)}.content{padding:26px}.topbar{padding:17px 26px}.lesson-layout{grid-template-columns:minmax(0,1.2fr) minmax(230px,.8fr);gap:17px}.hero{padding:26px}.tool-grid{grid-template-columns:1fr 1fr}.hero-visual{min-height:200px}.float-token.one{left:0}.float-token.two{right:0}.practice-grid{grid-template-columns:1fr 1fr}}
@media(max-width:850px){.app-shell{display:block}.sidebar{display:none}.main-area{width:100%}.mobile-nav{position:fixed;bottom:0;left:0;right:0;z-index:20;display:grid;grid-template-columns:repeat(5,1fr);gap:3px;padding:6px 8px calc(7px + env(safe-area-inset-bottom));border-top:2px solid var(--ink);background:#fffdf5f7;backdrop-filter:blur(10px)}.mobile-nav a{display:flex;flex-direction:column;align-items:center;justify-content:center;text-decoration:none;color:var(--muted);min-height:57px;font-size:11px;border-radius:11px}.mobile-nav a span{font-size:21px}.mobile-nav a.active{background:var(--lime);color:var(--ink)}.content{padding:24px 20px 115px}.topbar{padding:12px 20px;min-height:80px}.topbar .breadcrumb{display:none}.top-tools{width:100%;justify-content:space-between}.lesson-layout{display:flex;flex-direction:column}.lesson-main,.lesson-side{width:100%}.lesson-side{display:grid;gap:15px}.hero h1{font-size:42px}.hero-visual{min-height:180px}.hero-robo{width:110px;height:140px}.hero-orbit{width:180px;height:150px}.lesson-dots a{width:35px;height:35px}.parent-grid{grid-template-columns:1fr}.badge-grid{grid-template-columns:1fr 1fr}.lesson-view .action-bar{position:fixed;bottom:77px;left:0;right:0;z-index:22;background:#fffdf5f5;border-top:1px solid var(--line);padding:9px 15px;margin:0;display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:8px}.lesson-view .action-bar button{min-width:0;font-size:15px;padding:10px 5px;min-height:60px}.lesson-view .content{padding-bottom:200px}.lesson-view .toast{bottom:165px}.lesson-view .hint-box{position:fixed;bottom:164px;left:12px;right:12px;z-index:23;max-width:700px;margin:auto;box-shadow:0 5px 18px #163e3633}.lesson-view .hint-box p{margin:4px 0}.lesson-view .hint-box .row{justify-content:space-between}.hero p{font-size:17px}}
@media(max-width:540px){body{font-size:16px}.content{padding:23px 15px 110px}.topbar{padding:11px 15px}.top-tools{gap:5px}.top-tools .pill{font-size:13px;padding:7px 9px}.top-tools button{font-size:12px;padding:7px 9px}.hero{grid-template-columns:1fr;padding:23px}.hero-visual{display:none}.hero h1{font-size:40px}.project-grid,.home-bottom,.creation-grid{grid-template-columns:1fr}.project-art{height:150px}.tool-grid{gap:10px}.tool-card{padding:14px}.tool-card b{font-size:18px}.tool-card small{font-size:13px}.page-head h1{font-size:36px}.lesson-dots{gap:7px}.lesson-dots a{width:32px;height:32px}.lesson-top .plain{font-size:14px;padding:8px 12px}.lesson-prompt{font-size:29px}.visual-stage{padding:18px;min-height:155px}.practice-grid{grid-template-columns:1fr}.badge-grid{gap:12px}.badge-card{padding:17px}.stats{grid-template-columns:1fr 1fr}.stat:last-child{grid-column:1/-1}.code-editor{font-size:16px;min-height:190px}.action-bar .primary{min-width:0}.dialog-card{padding:24px}.mobile-nav a{font-size:10px}.card{padding:19px}.data-table{font-size:13px}.loop-balls span{font-size:31px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;scroll-behavior:auto!important}.confetti{display:none}}
/* Four visible actions on phones and landscape tablets. */
.lesson-dots{flex-wrap:wrap;max-width:100%}.lesson-dots a{width:56px;height:56px}
.mobile-nav{gap:2px;padding-left:4px;padding-right:4px}
@media(max-width:850px){
 .lesson-view .action-bar{grid-template-columns:1.3fr 1fr 1fr 1fr;padding:9px 10px;gap:6px}
 .lesson-view .action-bar button{font-size:13px;min-height:60px}
}
@media(min-width:851px) and (max-width:1100px),(min-width:851px) and (pointer:coarse){
 .lesson-view .action-bar{position:fixed;bottom:0;left:0;right:0;z-index:22;background:#fffdf5f5;border-top:2px solid var(--ink);padding:12px 18px;display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:10px;margin:0}
 .lesson-view .action-bar button{min-width:0;min-height:60px;font-size:17px}
 .lesson-view .content{padding-bottom:130px}
 .lesson-view .hint-box{position:fixed;bottom:100px;left:12px;right:12px;max-width:700px;margin:auto;z-index:23;background:#fff1be;box-shadow:0 4px 20px #163e3633}
 .lesson-view .toast{bottom:100px}
}
@media(min-width:851px) and (max-width:1100px){.lesson-view .action-bar{left:190px}.lesson-view .hint-box{left:202px}}
@media(min-width:1101px) and (pointer:coarse){.lesson-view .action-bar{left:218px}.lesson-view .hint-box{left:230px}}