@import "https://fonts.googleapis.com/css2?family=DM+Sans:wght@400..700&family=Instrument+Serif:ital@1&display=swap";:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;--paper:#f7f7f0;--panel:#fffefa;--ink:#142b22;--muted:#495a51;--accent:#d0f578;--mint:#e4eee0;--line:#d9e0d4;--dark:#102b23;--serif:"Instrument Serif", Georgia, serif;--sans:"DM Sans", "Segoe UI", sans-serif}*,:before,:after{box-sizing:border-box}html{min-width:280px}body{background:var(--paper);color:var(--ink);font-family:var(--sans);margin:0;line-height:1.5}button,input{font:inherit}button{color:inherit;cursor:pointer}button:disabled{cursor:default}a{color:inherit}:is(button:focus-visible,a:focus-visible,input:focus-visible,summary:focus-visible){outline-offset:4px;outline:3px solid #537939}img{max-width:100%;display:block}h1,h2,h3,p{margin:0}svg{flex-shrink:0}.site-shell{flex-direction:column;min-height:100dvh;display:flex}.site-main{flex:1;width:min(100% - 4.5rem,1152px);margin:0 auto;padding-bottom:4.5rem}.site-main:focus{outline:none}.visually-hidden,.skip-link:not(:focus){clip-path:inset(50%);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.skip-link:focus{z-index:10;background:var(--panel);border-radius:.5rem;align-items:center;gap:.5rem;padding:.75rem 1rem;display:inline-flex;position:fixed;top:.75rem;left:.75rem}.topbar{background:var(--panel);border-bottom:1px solid var(--line)}.topbar-inner{grid-template-columns:1fr auto 1fr;align-items:center;column-gap:1.2rem;width:min(100% - 4.5rem,1152px);min-height:4.75rem;margin:0 auto;display:grid}.brand{letter-spacing:-.045em;align-items:center;gap:.65rem;width:fit-content;font-size:1.13rem;font-weight:700;line-height:1.15;text-decoration:none;display:inline-flex}.brand img{flex:none;width:2.5rem;height:2.5rem}.brand-secondary{font-weight:500}.main-nav{justify-content:center;align-items:center;gap:1.65rem;display:flex}.main-nav a{white-space:nowrap;color:var(--muted);padding:.65rem 0;font-size:.91rem;font-weight:600;text-decoration:none;position:relative}.main-nav a:hover,.main-nav a[aria-current=page]{color:var(--ink)}.main-nav a[aria-current=page]:after{content:"";background:#52753d;height:2px;position:absolute;bottom:.2rem;left:0;right:0}.header-tools{justify-content:flex-end;align-items:center;gap:.75rem;display:flex}.font-size{border:1px solid var(--line);border-radius:.64rem;align-items:center;padding:.13rem;display:flex}.font-size button{background:0 0;border:0;border-radius:.45rem;place-items:center;min-width:max(2rem,30px);min-height:max(2rem,32px);padding:0;font-size:.84rem;font-weight:700;display:grid}.font-size button:first-child{font-size:.76rem}.font-size button:nth-child(3){font-size:.9rem}.font-size button:not(:disabled):hover,.account-button:not(:disabled):hover{background:var(--mint)}.font-size button:disabled{opacity:.4}.account-button{border:1px solid var(--line);white-space:nowrap;background:0 0;border-radius:.65rem;justify-content:center;align-items:center;gap:.38rem;min-height:2.45rem;padding:.47rem .72rem;font-size:.86rem;font-weight:700;display:inline-flex}.hero{background:var(--dark);color:#f4f7e9;border-radius:1.55rem;grid-template-columns:1.02fr .98fr;align-items:stretch;min-height:27.75rem;margin-top:2.6rem;display:grid;overflow:hidden}.hero-copy{z-index:1;align-self:center;padding:3.8rem 1.5rem 3.9rem 3.45rem;position:relative}.hero-kicker{color:#d9e8d0;border:1px solid #53705c;border-radius:20rem;align-items:center;gap:.48rem;padding:.3rem .6rem;font-size:.76rem;font-weight:600;display:inline-flex}.hero-kicker span{background:var(--accent);border-radius:50%;width:.4rem;height:.4rem}.hero h1{letter-spacing:-.079em;text-wrap:balance;margin-top:.9rem;font-size:clamp(3.05rem,6.35vw,5.9rem);font-weight:700;line-height:.99}.hero h1 em{color:var(--accent);font-family:var(--serif);letter-spacing:-.045em;font-weight:400}.hero p{color:#d0ded2;max-width:28rem;margin:1.25rem 0 1.7rem;font-size:1.06rem;line-height:1.58}.hero-visual{isolation:isolate;background:#102b23;min-width:0;min-height:15rem;position:relative}.hero-visual:before{content:"";z-index:1;background:linear-gradient(90deg, var(--dark), transparent 27%), linear-gradient(0deg, #0b221dc9, transparent 35%);pointer-events:none;position:absolute;inset:0}.hero-visual img{object-fit:cover;object-position:53% center;width:100%;height:100%;position:absolute;inset:0}.hero-visual-link{z-index:1;color:#eff8e4;background:#112820dc;border:1px solid #8ca485;border-radius:2rem;align-items:center;gap:.46rem;padding:.52rem .75rem;font-size:.8rem;font-weight:600;text-decoration:none;display:inline-flex;position:absolute;bottom:1.25rem;right:1.3rem}.hero-visual-link:hover{background:#2c4b36}.hero :focus-visible{outline-color:var(--accent)}.action-row{flex-wrap:wrap;align-items:center;gap:.65rem;display:flex}.button{text-align:center;border:1px solid #0000;border-radius:.66rem;justify-content:center;align-items:center;gap:.55rem;width:fit-content;min-height:2.8rem;padding:.6rem .94rem;font-size:.91rem;font-weight:700;line-height:1.3;text-decoration:none;display:inline-flex}.button-primary{background:var(--accent);color:#213322;border-color:#a9ca65}.button-primary:not(:disabled):hover{background:#dffb9a}.button-quiet{color:var(--ink);background:0 0;border-color:#aebcaf}.button-quiet:not(:disabled):hover{background:var(--mint)}.hero .button-primary{border-color:var(--accent)}.hero .button-quiet{color:#f1f6e8;border-color:#7b947f}.hero .button-quiet:hover{background:#294437}.button:disabled{opacity:.58}.home-section{margin-top:3.35rem}.inner-section{margin-top:2.75rem}.section-heading{margin-bottom:1.1rem}.section-heading h2,.save-banner h2,.guest-banner h2{letter-spacing:-.052em;font-size:clamp(1.6rem,3vw,2.23rem);font-weight:700;line-height:1.12}.section-heading p,.save-banner p,.guest-banner p{color:var(--muted);margin-top:.45rem}.lesson-groups{gap:1.45rem;display:grid}.lesson-group>:is(h2,h3){letter-spacing:-.02em;margin-bottom:.55rem;font-size:1.15rem}.lesson-list{border:1px solid var(--line);background:var(--panel);border-radius:1rem}.lesson-row{color:inherit;grid-template-columns:1.6rem 2.75rem minmax(0,1fr) auto auto;align-items:center;gap:.95rem;padding:.9rem 1.2rem;text-decoration:none;display:grid}.lesson-row:first-child{border-top-left-radius:calc(1rem - 1px);border-top-right-radius:calc(1rem - 1px)}.lesson-row:last-child{border-bottom-right-radius:calc(1rem - 1px);border-bottom-left-radius:calc(1rem - 1px)}.lesson-row+.lesson-row{border-top:1px solid var(--line)}.lesson-row:hover{background:#f1f5ea}.lesson-row:focus-visible{z-index:1;outline-offset:1px;position:relative}.lesson-number{color:#546953;font-variant-numeric:tabular-nums;font-size:.76rem;font-weight:700}.tile-icon,.small-icon,.page-icon{background:var(--mint);color:#335d40;border-radius:.68rem;flex:none;align-self:center;place-items:center;width:2.75rem;height:2.75rem;display:grid}.lesson-label{gap:.08rem;display:grid}.lesson-label strong{letter-spacing:-.022em;font-size:1.02rem}.lesson-label>span{color:var(--muted);font-size:.88rem}.lesson-state,.completion-pill{color:#3f5646;border:1px solid var(--line);white-space:nowrap;background:#f5f8ef;border-radius:2rem;grid-column:4;align-items:center;gap:.3rem;padding:.16rem .55rem;font-size:.72rem;font-weight:650;display:inline-flex}.lesson-state.complete,.completion-pill{color:#375c30;background:#e9f4dc;border-color:#bfd6ab}.list-arrow{color:#5c7462;grid-column:5}.game-grid{grid-template-columns:repeat(auto-fit,minmax(min(100%,16rem),1fr));gap:1rem;display:grid}.game-card{border:1px solid var(--line);min-width:0;color:inherit;background:var(--panel);border-radius:1.03rem;flex-direction:column;text-decoration:none;transition:border-color .18s,transform .18s;display:flex}.game-card:hover{border-color:#8fa58e;transform:translateY(-2px)}.game-card-art{isolation:isolate;color:#254b35;background-color:#dcebd8;background-image:repeating-linear-gradient(0deg,#0000 0 17px,#456d4329 18px 19px),repeating-linear-gradient(90deg,#0000 0 17px,#456d4329 18px 19px);border-radius:1rem 1rem 0 0;place-items:center;min-height:6.9rem;display:grid;position:relative;overflow:hidden}.game-card:nth-child(3n+2) .game-card-art{background-color:#e6edc9}.game-card:nth-child(3n) .game-card-art{background-color:#e6e7d8}.game-card-art:before{content:"";z-index:-1;background:var(--panel);opacity:.88;border:1px solid #8daa8c;border-radius:50%;width:5rem;height:5rem;position:absolute}.game-card-body{flex-direction:column;flex:1;align-items:flex-start;padding:1.1rem 1.2rem 1.2rem;display:flex}.game-card-body :is(h2,h3){letter-spacing:-.03em;font-size:1.22rem;font-weight:700}.game-card-body p{color:var(--muted);margin:.3rem 0 .9rem;font-size:.91rem}.game-card-link{align-items:center;gap:.4rem;margin-top:auto;font-size:.88rem;font-weight:700;display:inline-flex}.save-banner,.guest-banner{background:#ebf1e1;border:1px solid #d5e0cb;border-radius:1rem;flex-wrap:wrap;align-items:center;gap:1rem;padding:1.25rem 1.5rem;display:flex}.save-banner{margin-top:3.4rem}.save-banner .small-icon{background:#d9e6ca}.save-banner h2,.guest-banner h2{font-size:1.4rem}.save-banner p,.guest-banner p{margin-top:.22rem;font-size:.92rem}.save-banner .button,.guest-banner .action-row{margin-left:auto}.page-header{margin:3.3rem 0 1.8rem}.page-icon{border:1px solid #d0dfcc;width:3.35rem;height:3.35rem;margin-bottom:.9rem}.page-header h1,.article-heading h1{letter-spacing:-.07em;text-wrap:balance;font-size:clamp(2.4rem,5.3vw,4.15rem);font-weight:700;line-height:1.03}.page-header p,.article-heading p{max-width:42rem;color:var(--muted);margin-top:.65rem;font-size:1.08rem}.lesson-page,.game-page,.privacy-page{width:min(100%,51rem);margin:2.7rem auto 0}.back-link{color:#3f5548;align-items:center;gap:.45rem;margin-bottom:1.15rem;font-size:.89rem;font-weight:700;text-decoration:none;display:inline-flex}.back-link:hover{text-decoration:underline}.article-heading{margin-bottom:1.65rem}.activity-index{color:#536d5c;margin-bottom:.37rem;font-size:.82rem;font-weight:700;display:inline-block}.lesson-reading{gap:1.5rem;margin:2.2rem 0;display:grid}.lesson-reading h2{letter-spacing:-.035em;margin-bottom:.35rem;font-size:1.38rem;line-height:1.24}.lesson-reading p{color:var(--muted);max-width:68ch;line-height:1.68}.lesson-reading a{text-underline-offset:.2em;color:#2f5c3b}.reading-link a{align-items:center;gap:.35rem;font-size:.9rem;display:inline-flex}.checkpoint{border:1px solid var(--line);background:var(--panel);border-radius:1rem;padding:1.25rem}.checkpoint-heading{flex-wrap:wrap;align-items:center;gap:.7rem;margin-bottom:.9rem;display:flex}.checkpoint-heading h2{letter-spacing:-.03em;font-size:1.2rem}.checkpoint-heading .completion-pill{margin-left:auto}.checkpoint fieldset{border:0;min-inline-size:0;margin:0 0 1rem;padding:0}.checkpoint legend{margin-bottom:.65rem;padding:0;font-weight:650}.check-options{gap:.5rem;display:grid}.check-options label{border:1px solid var(--line);cursor:pointer;border-radius:.55rem;align-items:flex-start;gap:.52rem;padding:.6rem .7rem;display:flex}.check-options label:hover,.check-options label.selected{background:#eef4e6;border-color:#a9c19d}.check-options input{accent-color:#456d43;flex:none;margin:.22em 0 0}.quiz-feedback{background:#f8efdc;border-radius:.55rem;margin-bottom:.85rem;padding:.65rem .75rem}.quiz-feedback.correct{background:#eaf4df}.lesson-practice{background:var(--panel);border:1px solid var(--line);border-radius:.75rem;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:.75rem;margin-top:1rem;padding:.8rem;text-decoration:none;display:grid}.lesson-practice:hover{background:#f1f5ea}.lesson-practice strong{display:block}.lesson-practice span span{color:var(--muted);margin-top:.17rem;font-size:.88rem;display:block}.lesson-end{flex-wrap:wrap;justify-content:space-between;gap:.65rem;margin-top:1.5rem;display:flex}.progress-heading{flex-wrap:wrap;justify-content:space-between;align-items:flex-end;gap:.75rem;display:flex}.progress-bar{background:#e0e9db;border:none;border-radius:2rem;width:100%;height:.58rem;margin-bottom:1rem;overflow:hidden}.progress-bar::-webkit-progress-bar{background:#e0e9db}.progress-bar::-webkit-progress-value{background:#6a964d}.progress-bar::-moz-progress-bar{background:#6a964d}.account-status{overflow-wrap:anywhere;background:#e9f1e1;border-radius:.55rem;margin-top:1rem;padding:.65rem .9rem}.site-footer{background:var(--panel);border-top:1px solid var(--line)}.footer-inner{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:.8rem 1.5rem;width:min(100% - 4.5rem,1152px);min-height:5.55rem;margin:0 auto;padding:1rem 0;display:flex}.footer-inner .brand img{width:2rem;height:2rem}.footer-inner .brand{font-size:1rem}.footer-links{flex-wrap:wrap;align-items:center;gap:.55rem 1.25rem;display:flex}.footer-links a{color:var(--muted);overflow-wrap:anywhere;align-items:center;gap:.3rem;font-size:.86rem;text-decoration:none;display:inline-flex}.footer-links a:hover{text-decoration:underline}.account-dialog{background:var(--panel);width:min(100% - 1.5rem,26.5rem);max-height:calc(100% - 1.5rem);color:var(--ink);border:1px solid var(--line);border-radius:1.15rem;padding:1.3rem;overflow:auto;box-shadow:0 22px 80px #071a1372}.account-dialog::backdrop{background:#071a1374}.dialog-heading{justify-content:space-between;align-items:center;gap:.5rem;margin-bottom:.7rem;display:flex}.icon-button{width:2.5rem;height:2.5rem;color:var(--ink);border:1px solid var(--line);background:0 0;border-radius:.55rem;place-items:center;padding:0;display:grid}.icon-button:hover{background:var(--mint)}.account-dialog h2{letter-spacing:-.05em;font-size:1.9rem;line-height:1.14}.account-dialog p{color:var(--muted);font-size:.91rem}.account-dialog h2+p{margin-top:.35rem}.account-dialog form{margin-top:.9rem}.account-dialog form label{margin:.58rem 0 .26rem;font-size:.88rem;font-weight:700;display:block}.account-dialog input{width:100%;min-width:0;color:var(--ink);background:#fff;border:1px solid #b2c0b1;border-radius:.55rem;padding:.59rem .65rem;display:block}.password-field{align-items:center;gap:.45rem;display:flex}.password-field button{border:1px solid var(--line);background:0 0;border-radius:.55rem;min-width:3.3rem;min-height:2.5rem;padding:.33rem;font-size:.84rem;font-weight:650}.password-field button:hover{background:var(--mint)}.account-dialog .form-hint{margin-top:.33rem;font-size:.81rem}.account-dialog .account-notice{color:#3c4f3e;background:#edf2e4;border:1px solid #d5e1cc;border-radius:.5rem;margin-top:.68rem;padding:.56rem .65rem;font-size:.83rem}.account-dialog .form-error{color:#8a2f29;margin-top:.55rem}.account-submit{width:100%;margin-top:.78rem}.dialog-switch{flex-wrap:wrap;justify-content:center;gap:.15rem .35rem;margin-top:.7rem;font-size:.83rem;display:flex}.inline-button{color:#305a39;text-underline-offset:.15em;background:0 0;border:0;padding:0;font-weight:700;text-decoration:underline}@media (max-width:940px){.topbar-inner{column-gap:.85rem}.main-nav{gap:1.04rem}.hero-copy{padding-left:2.35rem}}@media (max-width:780px){.topbar-inner{grid-template-columns:minmax(0,1fr) auto;row-gap:.15rem;min-height:auto;padding-top:.65rem}.main-nav{flex-wrap:wrap;grid-area:2/1/auto/-1;justify-content:flex-start;gap:1.35rem}.header-tools{grid-area:1/2}.hero{grid-template-columns:1.1fr .9fr}.hero-copy{padding:2.4rem 1rem 2.4rem 1.55rem}.hero h1{font-size:clamp(2.9rem,8vw,5rem)}}@media (max-width:600px){.site-main,.topbar-inner,.footer-inner{width:calc(100% - 1.5rem)}.site-main{padding-bottom:2.5rem}.hero{border-radius:1rem;grid-template-columns:1fr;margin-top:1rem}.hero-copy{padding:1.7rem .95rem .5rem}.hero h1{font-size:clamp(2.55rem,12vw,4rem)}.hero p{margin:.8rem 0 1.15rem;font-size:.96rem}.hero-visual{min-height:13.3rem}.hero-visual:before{background:linear-gradient(180deg, var(--dark), transparent 32%), linear-gradient(0deg, #0b221dbe, transparent 28%)}.hero-visual-link{bottom:.65rem;right:.65rem}.home-section,.inner-section,.save-banner{margin-top:2.35rem}.lesson-row{grid-template-columns:2.25rem minmax(0,1fr) auto;gap:.58rem;padding:.7rem .65rem}.lesson-number{display:none}.lesson-row .lesson-state{grid-area:2/2;width:fit-content}.lesson-row .list-arrow{grid-area:1/3;width:1rem}.tile-icon{width:2.25rem;height:2.25rem}.tile-icon svg{width:1.12rem;height:1.12rem}.game-card-art{min-height:5.45rem}.game-card-art:before{width:4.25rem;height:4.25rem}.game-card-art svg{width:2.3rem;height:2.3rem}.save-banner,.guest-banner{padding:.94rem}.save-banner .button,.guest-banner .action-row{margin-left:0}.page-header,.lesson-page,.game-page,.privacy-page{margin-top:1.6rem}}@media (max-width:390px){.topbar-inner{column-gap:.4rem}.topbar .brand{gap:.25rem;font-size:.83rem}.topbar .brand img{width:1.45rem;height:1.45rem}.topbar .brand-secondary{display:block}.header-tools{gap:.25rem}.font-size button{min-width:1.45rem;min-height:30px}.account-button{padding-inline:.42rem;font-size:.76rem}.account-button svg{display:none}.main-nav{gap:.8rem}}@media (prefers-reduced-motion:reduce){.game-card{transition:none}}
