@font-face{font-family:Instrument;src:url('/fonts/InstrumentSans.ttf') format('truetype');font-weight:100 900;font-display:swap}
@font-face{font-family:Bricolage;src:url('/fonts/BricolageGrotesque.ttf') format('truetype');font-weight:100 900;font-display:swap}
:root{font-family:Instrument,system-ui,sans-serif;line-height:1.55;color-scheme:light;--canvas:#f7f8f2;--surface:#fff;--text:#20251f;--muted:#52604f;--line:#dce2d5;--action:#5243c2;--on-action:#fff;--soft:#eaf0e3;--ink:#20251f;background:var(--canvas);color:var(--text)}
:root[data-theme=dark]{color-scheme:dark;--canvas:#1d241f;--surface:#28332b;--text:#f7f8f2;--muted:#bbc8b9;--line:#465447;--action:#c7beff;--on-action:#221c49;--soft:#344437;--ink:#20251f}
@media(prefers-color-scheme:dark){:root:not([data-theme]){color-scheme:dark;--canvas:#1d241f;--surface:#28332b;--text:#f7f8f2;--muted:#bbc8b9;--line:#465447;--action:#c7beff;--on-action:#221c49;--soft:#344437;--ink:#20251f}:root:not([data-theme]) .logo-light{display:none!important}:root:not([data-theme]) .logo-dark{display:block!important}}
*{box-sizing:border-box}
body{margin:0}
a{color:var(--action);text-underline-offset:.18em}
a:focus-visible{outline:1.5px solid var(--text);outline-offset:1px}
:where(a:focus-visible){border-radius:4px}
.site-frame{min-height:100dvh;display:flex;flex-direction:column}
.wrap{width:min(100% - 64px,1440px);margin-inline:auto}
.logo-dark,:root[data-theme=dark] .logo-light{display:none!important}
:root[data-theme=dark] .logo-dark{display:block!important}
.button{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:8px 18px;border-radius:12px;background:var(--action);color:var(--on-action);font-weight:700;text-decoration:none;transition:transform .18s ease,filter .18s ease}
.button:hover{filter:brightness(.95)}
.button:active{transform:scale(.98)}
.content-main{flex:1;max-width:1120px;padding-block:48px 72px}
.back-link{display:inline-flex;align-items:center;min-height:44px;margin-bottom:16px;font-weight:650}
.index-page,.article-page{max-width:900px;margin-inline:auto}
.index-page{max-width:1120px}
.page-head{margin-bottom:20px}
.eyebrow{margin:0 0 8px;text-transform:uppercase;letter-spacing:.11em;font-size:.84rem;font-weight:800;color:var(--muted)}
h1,h2,h3{font-family:Bricolage,system-ui,sans-serif;line-height:1.15;letter-spacing:-.015em;font-weight:600}
h1{font-size:clamp(2.3rem,5vw,4.2rem);margin:0}
h2{font-size:clamp(1.4rem,2.7vw,1.85rem);margin:36px 0 12px}
h3{font-size:1.15rem;margin:24px 0 8px}
.post-date{color:var(--muted);margin:12px 0 0;font-size:.95rem}
.article-body{font-size:1.05rem;max-width:72ch;overflow-wrap:anywhere}
.index-page .article-body{max-width:none}
.article-body p{margin:0 0 18px}
.article-body .lead{font-size:clamp(1.13rem,1.6vw,1.35rem);line-height:1.5;color:var(--text);max-width:68ch;margin-bottom:28px}
.article-body ul{padding-left:1.45em}
.article-body li{margin:0 0 10px}
.source-list{font-size:.95rem}
.link-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin:20px 0 32px}
.link-card{--accent:#d8f36a;position:relative;min-height:180px;display:flex;flex-direction:column;align-items:flex-start;gap:8px;padding:20px 22px;border:1px solid var(--line);border-top:8px solid var(--accent);border-radius:18px;background:var(--surface);color:var(--text);text-decoration:none;transition:transform .18s ease,box-shadow .18s ease}
.link-card:hover{transform:translateY(-2px);box-shadow:0 6px 18px color-mix(in srgb,var(--text) 9%,transparent)}
.link-card:active{transform:scale(.99)}
.tone-mint{--accent:#c8e5d0}.tone-teal{--accent:#9edbd7}.tone-citron{--accent:#d8f36a}.tone-lilac{--accent:#d9d2f4}.tone-gold{--accent:#f5dc82}.tone-apricot{--accent:#ffaf86}.tone-sky{--accent:#a8d8ec}.tone-rose{--accent:#efafc4}
.link-card:not(.has-art){display:grid;grid-template-columns:minmax(0,1fr) 32px;grid-template-rows:auto 1fr auto;column-gap:12px;align-items:start}
.card-name{margin:0;font:600 1.35rem/1.2 Bricolage,system-ui,sans-serif}
.card-summary{grid-column:1/-1;grid-row:2;color:var(--muted);line-height:1.45}
.card-date{grid-column:1/-1;grid-row:3;align-self:end;margin-top:auto;font-size:.84rem;color:var(--muted)}
.card-arrow{grid-column:2;grid-row:1;display:grid;place-items:center;width:32px;height:32px;border-radius:10px;background:var(--accent);font-size:1.1rem;color:#20251f}
.card-art{position:absolute;right:16px;top:16px;display:grid;place-items:center;width:76px;height:72px;border-radius:14px;background:var(--accent);color:#20251f}
.card-art svg{display:block;width:64px;height:58px}
.has-art .card-name,.has-art .card-summary{max-width:calc(100% - 82px)}
.has-art .card-arrow{position:absolute;right:16px;top:auto;bottom:12px;width:32px;height:32px;background:transparent;color:var(--action)}
.feature-panel,.next-reading{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:24px;border:1px solid var(--line);border-radius:20px;background:var(--surface)}
.feature-panel{margin:36px 0}
.feature-panel h2,.next-reading h2{margin:0 0 8px}
.feature-panel p,.next-reading p{margin:0;max-width:62ch;color:var(--muted)}
.next-reading{max-width:900px;margin:56px auto 0}
.button{flex:none}
.site-footer{display:flex;align-items:flex-start;justify-content:space-between;flex-wrap:wrap;gap:4px 24px;min-height:52px;padding-block:4px;border-top:1px solid var(--line);font-size:.875rem}
.footer-brand{display:flex;align-items:center;flex-wrap:wrap;gap:6px;min-height:44px;color:var(--muted)}
.footer-brand img{display:block;width:88px;height:auto}
.footer-brand a{color:var(--muted)}
.site-footer nav{display:flex;align-items:flex-start;flex-wrap:wrap;gap:4px 20px;margin-left:auto}
.site-footer nav a{display:inline-flex;align-items:center;min-height:44px;color:var(--muted)}
@media(max-width:900px){.link-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:680px){.wrap{width:min(100% - 32px,1440px)}.content-main{padding-block:24px 48px}.link-grid{grid-template-columns:1fr}.link-card{min-height:142px}.feature-panel,.next-reading{align-items:flex-start;flex-direction:column}.site-footer{align-items:flex-start}.site-footer nav{gap:4px 16px}}
:root[data-motion=reduced] :is(.link-card,.button){transition:none}
:root[data-motion=reduced] :is(.link-card,.button):active{transform:none}
:root[data-motion=reduced] .link-card:hover{transform:none}
@media(prefers-reduced-motion:reduce){:root:not([data-motion=full]) :is(.link-card,.button){transition:none}:root:not([data-motion=full]) :is(.link-card,.button):active{transform:none}:root:not([data-motion=full]) .link-card:hover{transform:none}}

.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.worked-example{display:grid;grid-template-columns:minmax(0,360px) minmax(0,1fr);align-items:center;gap:24px;margin:32px 0;padding:16px;border:1px solid var(--line);border-radius:20px;background:var(--surface)}
.example-graphic{display:flex;align-items:center;justify-content:center;min-width:0;border-radius:16px;overflow:hidden;background:#f7f8f2}
.example-graphic img{display:block;width:100%;max-width:360px;height:auto}
.worked-example figcaption{min-width:0}
.worked-example h3{font-size:1.35rem;margin:0 0 16px}
.worked-example ol{margin:0;padding-left:1.35em}
.worked-example li{padding-left:4px;margin:0 0 12px}
.worked-example .example-note{margin:12px 0 0;color:var(--muted);font-size:.9rem}
.practice-demo{margin:40px 0 8px;padding:24px;border:1px solid var(--line);border-radius:20px;background:var(--surface)}
.practice-demo h2{margin:0 0 16px}
.practice-demo>p{max-width:66ch}
.mini-board{width:min(100%,320px);margin:24px auto 18px;padding:6px;border-spacing:4px;table-layout:fixed;border-radius:16px;background:#e8eee2}
.mini-board td{position:relative;width:25%;height:68px;padding:0;border:1px solid #bdc8b8;border-radius:10px;background:#fff;color:#20251f;text-align:center}
.mini-board .mini-fixed{background:#f2f5ea}
.mini-fixed:after{content:"";position:absolute;bottom:8px;left:calc(50% - 2px);width:4px;height:4px;border-radius:50%;background:#5243c2}
.mini-symbol{display:grid;place-items:center;width:52%;height:52%;margin:auto}
.mini-symbol svg,.mini-cell-button svg{display:block;width:100%;height:100%}
.mini-cell-button svg{width:52%;height:52%;margin:auto}
.mini-empty{font-size:.8rem;color:#52604f}
.mini-cell-button{width:100%;height:100%;min-height:60px;border:0;border-radius:9px;background:transparent;color:#20251f;font:700 2rem/1 Instrument,system-ui,sans-serif;cursor:pointer}
.mini-cell-button[data-value="empty"]{font-size:1.4rem;color:#7c8779}
.mini-cell-button[data-value="diamond"]{color:#5243c2}
.mini-cell-button[data-hint="true"]{outline:4px solid #5243c2;outline-offset:-4px;background:#eeeaff}
.mini-cell-button[data-issue="true"]{outline:4px solid #b14437;outline-offset:-4px;background:#fff0ec}
.mini-cell-button:focus-visible{outline:1.5px solid var(--text);outline-offset:-3px}
.demo-controls button:focus-visible{outline:1.5px solid var(--text);outline-offset:1px}
.demo-controls{display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:8px}
.demo-controls button{min-height:44px;padding:8px 16px;border-radius:12px;font:700 1rem/1.2 Instrument,system-ui,sans-serif;cursor:pointer}
.demo-controls .button{border:1px solid var(--action)}
.demo-secondary{border:1px solid var(--line);background:var(--soft);color:var(--text)}
.demo-status{min-height:3em;margin:18px auto 0!important;max-width:52ch;text-align:center;font-weight:600}
.demo-fallback{margin:12px 0!important;text-align:center;color:var(--muted)}
@media(max-width:760px){.worked-example{grid-template-columns:1fr;gap:16px}.example-graphic{max-width:360px;width:100%;margin-inline:auto}}
@media(max-width:680px){.worked-example{padding:12px}.practice-demo{padding:16px}.mini-board td{height:60px}.mini-cell-button{min-height:56px}}

.lesson-example{grid-template-columns:minmax(0,300px) minmax(0,1fr)}
.lesson-example figcaption p:last-child{margin-bottom:0}
.lesson-board{width:min(100%,300px);margin:0 auto;padding:6px;border-spacing:4px;table-layout:fixed;border-radius:16px;background:var(--soft)}
.lesson-board td{position:relative;width:25%;padding:0;border:1px solid var(--line);border-radius:9px;background:var(--surface);color:var(--text)}
.lesson-board td>div{display:grid;place-items:center;aspect-ratio:1;font-size:clamp(1.4rem,5vw,2rem);line-height:1}
.lesson-board td>div>span{display:grid;place-items:center;width:52%;height:52%}
.lesson-board td svg{display:block;width:100%;height:100%}
.lesson-board .ponder-icon{fill:none;stroke:currentColor}
.lesson-board .lesson-fixed{background:var(--soft)}
.lesson-fixed:after{content:"";position:absolute;bottom:6px;left:calc(50% - 2px);width:4px;height:4px;border-radius:50%;background:var(--action)}
.lesson-board .lesson-new{outline:3px solid var(--action);outline-offset:-4px}
.lesson-diamond{color:var(--action)}
.lesson-empty{color:var(--muted)}
.lesson-board .lesson-wall{background:#20251f;color:#f7f8f2;border-color:var(--muted)}
.lesson-board .lesson-lit{background:#f5dc82;color:#20251f;border-color:#afa064}
:root[data-theme=dark] .lesson-board .lesson-lit{background:#5b5531;color:#fff5c5;border-color:#afa064}
@media(prefers-color-scheme:dark){:root:not([data-theme]) .lesson-board .lesson-lit{background:#5b5531;color:#fff5c5;border-color:#afa064}}
.lesson-sudoku{width:min(100%,320px);border-spacing:3px}
.lesson-sudoku td{width:16.66%;border-radius:6px}
.lesson-sudoku td>div{font-size:clamp(1.05rem,4.4vw,1.4rem);font-weight:600}
.lesson-sudoku .lesson-box{background:var(--soft)}
.lesson-sudoku .lesson-added{color:var(--action);font-weight:800}
.lesson-route-board{--route-b:#247569;display:block;width:min(100%,300px);height:auto;margin-inline:auto}
:root[data-theme=dark] .lesson-route-board{--route-b:#9edbd7}
@media(prefers-color-scheme:dark){:root:not([data-theme]) .lesson-route-board{--route-b:#9edbd7}}
.route-cell{fill:var(--surface);stroke:var(--line);stroke-width:1.5}
.route-highlight{fill:var(--soft)}
.route-line{fill:none;stroke:currentColor;stroke-width:8;stroke-linecap:round;stroke-linejoin:round}
.route-pair-0{color:var(--action)}
.route-pair-1{color:var(--route-b)}
.route-end{fill:currentColor}
.route-label{font:700 18px Instrument,system-ui,sans-serif;text-anchor:middle;dominant-baseline:central;fill:var(--on-action)}
.route-wall{stroke:var(--text);stroke-width:4;stroke-linecap:round}
.route-attention{fill:none;stroke:var(--text);stroke-width:2;stroke-dasharray:4 3}
.route-solutions{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin:28px 0}
.lesson-solution{margin:0;padding:16px;border:1px solid var(--line);border-radius:20px;background:var(--surface)}
.lesson-solution figcaption{margin-top:16px;color:var(--muted)}
.family-choices{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin:24px 0}
.family-choice{padding:20px;border:1px solid var(--line);border-top:6px solid var(--accent);border-radius:18px;background:var(--surface)}
.family-choice h3{font-size:1.4rem;margin:0 0 12px}
.family-choice dl{margin:0}
.family-choice dt{font-weight:750;margin:0 0 4px}
.family-choice dd{margin:0 0 16px;color:var(--muted)}
.family-play{display:inline-flex;align-items:center;min-height:44px;font-weight:700}
.article-contents{display:flex;flex-wrap:wrap;gap:4px 20px;padding:12px 16px;margin:24px 0;border:1px solid var(--line);border-radius:16px;background:var(--surface)}
.article-contents a{display:inline-flex;align-items:center;min-height:44px;min-width:0;max-width:100%}
.article-body h2[id]{scroll-margin-top:16px}
@media(max-width:760px){.lesson-example{grid-template-columns:1fr}}
@media(max-width:600px){.family-choices,.route-solutions{grid-template-columns:1fr}.family-choice{padding:16px}}
/* Roadmap: a Paths-style route through numbered stages, with illustrated plans. */
.roadmap-page{max-width:1120px}
.roadmap-page .article-body{max-width:none}
.roadmap-overview ol{position:relative;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:40px;margin:28px 0 44px;padding:0;list-style:none}
.roadmap-overview ol:before{content:"";position:absolute;top:50%;left:10%;right:10%;height:6px;border-radius:3px;background:var(--action);opacity:.35;transform:translateY(-50%)}
.roadmap-overview li{margin:0}
.roadmap-overview a{position:relative;display:flex;align-items:center;gap:14px;min-height:76px;padding:14px 18px;border:1px solid var(--line);border-radius:18px;background:var(--surface);color:var(--text);text-decoration:none;transition:transform .18s ease,box-shadow .18s ease}
.roadmap-overview a:hover{transform:translateY(-2px);box-shadow:0 6px 18px color-mix(in srgb,var(--text) 9%,transparent)}
.roadmap-overview a>span:last-child{display:flex;flex-direction:column}
.roadmap-overview strong{font-family:Bricolage,system-ui,sans-serif;font-size:1.3rem;font-weight:600;line-height:1.2}
.roadmap-overview a>span:last-child span{color:var(--muted);font-size:.9rem}
.roadmap-checkpoint{display:grid;flex:none;place-items:center;width:44px;height:44px;border:3px solid #20251f;border-radius:50%;background:var(--accent);color:#20251f;font-family:Bricolage,system-ui,sans-serif;font-size:1.25rem;font-weight:700;line-height:1}
.roadmap-stage{position:relative;display:grid;grid-template-columns:56px minmax(0,1fr);column-gap:20px;padding-bottom:44px;scroll-margin-top:16px}
.roadmap-stage:before{content:"";position:absolute;top:56px;bottom:0;left:25px;width:6px;border-radius:3px;background:var(--action);opacity:.3}
.roadmap-stage:last-child:before{bottom:44px}
.roadmap-stage>.roadmap-checkpoint{position:relative;z-index:1;grid-column:1;grid-row:1;width:56px;height:56px;font-size:1.5rem}
.roadmap-stage-head{grid-column:2;grid-row:1;align-self:center}
.roadmap-stage-head h2{margin:0}
.article-body .roadmap-stage-head p{margin:4px 0 0;color:var(--muted)}
.roadmap-cards{grid-column:2;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin-top:20px}
.roadmap-card{display:flex;flex-direction:column;gap:16px;padding:18px;border:1px solid var(--line);border-top:6px solid var(--accent);border-radius:18px;background:var(--surface)}
.roadmap-card h3{margin:0 0 6px;font-size:1.2rem}
.article-body .roadmap-card p{margin:0;color:var(--muted)}
.article-body .roadmap-card .roadmap-tag{margin:0 0 6px;color:var(--muted);font-size:.78rem;font-weight:800;letter-spacing:.1em;text-transform:uppercase}
.roadmap-icon{display:grid;place-items:center;width:64px;height:64px;border-radius:16px;background:var(--accent);box-shadow:0 3px 0 color-mix(in srgb,#20251f 22%,transparent);transform:rotate(-3deg)}
.roadmap-card:nth-child(even) .roadmap-icon{transform:rotate(3deg)}
.roadmap-icon svg{width:44px;height:44px}
.roadmap-wide{grid-column:span 2}
.article-body .roadmap-candidates{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin:16px 0 0;padding:0;list-style:none}
.article-body .roadmap-candidates li{display:flex;flex-direction:column;gap:10px;margin:0;padding:12px;border-radius:14px;background:color-mix(in srgb,var(--accent) 45%,#fff);color:#20251f}
.candidate-art{display:grid;place-items:center;width:100%;max-width:104px;aspect-ratio:1;border:1px solid color-mix(in srgb,#20251f 18%,transparent);border-radius:12px;background:#fff}
.candidate-art svg{width:84%;height:84%}
.roadmap-candidates li>span:last-child{display:flex;flex-direction:column;align-items:flex-start;gap:4px}
.roadmap-candidates strong{font-family:Bricolage,system-ui,sans-serif;font-size:1.1rem;font-weight:600}
.roadmap-candidates li>span:last-child>span:not(.candidate-status){color:#52604f;font-size:.95rem}
.candidate-status{padding:2px 10px;border:1px solid color-mix(in srgb,#20251f 25%,transparent);border-radius:999px;background:var(--accent);color:#20251f;font-size:.78rem;font-weight:800}
.theme-preview{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.theme-swatch{display:inline-flex;align-items:center;gap:6px;min-height:36px;padding:6px 10px;border:1px solid color-mix(in srgb,#20251f 22%,transparent);border-radius:12px;font-size:.85rem;font-weight:700}
.theme-swatch i{display:inline-block;width:14px;height:14px;border-radius:50%}
.roadmap-promises{margin:0 0 8px;padding:24px;border-radius:20px;background:var(--soft)}
.roadmap-promises h2{margin:0 0 16px}
.article-body .roadmap-promises ul{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin:0;padding:0;list-style:none}
.article-body .roadmap-promises li{position:relative;margin:0;padding-top:40px}
.roadmap-promises li:before{content:"";position:absolute;top:0;left:0;width:30px;height:30px;border:2px solid #20251f;border-radius:50%;background:#d8f36a url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='m6.5 12.5 3.5 3.5 7.5-8' fill='none' stroke='%2320251f' stroke-width='2.8' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/20px no-repeat}
.roadmap-promises strong{display:block}
@media(max-width:1000px){.roadmap-cards{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:760px){.article-body .roadmap-promises ul{grid-template-columns:1fr}.article-body .roadmap-promises li{padding:0 0 0 44px}}
@media(max-width:680px){.roadmap-overview ol{gap:14px;margin-bottom:32px}.roadmap-overview ol:before{top:34px}.roadmap-overview a{flex-direction:column;justify-content:flex-start;gap:8px;padding:12px 6px;text-align:center}.roadmap-overview a>span:last-child{align-items:center}.roadmap-overview strong{font-size:1.1rem}.roadmap-overview a>span:last-child span{font-size:.82rem}.roadmap-stage{grid-template-columns:40px minmax(0,1fr);column-gap:12px;padding-bottom:32px}.roadmap-stage:before{top:40px;left:17px}.roadmap-stage:last-child:before{bottom:32px}.roadmap-stage>.roadmap-checkpoint{width:40px;height:40px;font-size:1.15rem}.roadmap-cards{grid-template-columns:1fr;margin-top:16px}.roadmap-wide{grid-column:auto}.roadmap-card{padding:16px}.article-body .roadmap-candidates{grid-template-columns:1fr}.article-body .roadmap-candidates li{flex-direction:row;align-items:center}.candidate-art{flex:none;width:72px}}
:root[data-motion=reduced] .roadmap-overview a{transition:none}
:root[data-motion=reduced] .roadmap-overview a:hover{transform:none}
@media(prefers-reduced-motion:reduce){:root:not([data-motion=full]) .roadmap-overview a{transition:none}:root:not([data-motion=full]) .roadmap-overview a:hover{transform:none}}