:root{--ink:#171514;--panel:#211e1c;--graphite:#322d2a;--ivory:#f3ede3;--paper:#fbf7ef;--muted:#b9afa2;--line:#4a433e;--rust:#a64032;--gold:#bd8c3c;--good:#71846b;--shadow:0 24px 70px #0005;--serif:Georgia,'Times New Roman',serif;--sans:Inter,Arial,sans-serif;--condensed:'Arial Narrow',Impact,sans-serif}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--ink);color:var(--ivory);font-family:var(--sans);line-height:1.6}button,input,textarea,select{font:inherit}button{cursor:pointer}.skip-link{position:fixed;left:1rem;top:-5rem;background:var(--ivory);color:var(--ink);padding:.7rem 1rem;z-index:99}.skip-link:focus{top:1rem}.app-shell{min-height:100vh}.sidebar{position:fixed;inset:0 auto 0 0;width:285px;background:#0f0e0d;border-right:1px solid var(--line);display:flex;flex-direction:column;z-index:20}.brand{padding:2rem 1.5rem;border-bottom:1px solid var(--line)}.brand strong{display:block;font-family:var(--condensed);font-size:2.25rem;line-height:.88;letter-spacing:.025em;margin:.65rem 0;color:var(--ivory)}.eyebrow{font-size:.72rem;letter-spacing:.24em;font-weight:800;color:var(--gold)}.tagline{display:block;color:var(--muted);font-family:var(--serif);font-size:.9rem}.sidebar nav{padding:1rem;overflow:auto;flex:1}.nav-link{display:flex;gap:.8rem;align-items:center;width:100%;background:transparent;color:var(--muted);border:0;border-left:3px solid transparent;text-align:left;padding:.8rem .65rem;margin:.15rem 0;font-size:.76rem;letter-spacing:.08em;font-weight:800}.nav-link span{color:#746d66;font-family:var(--serif)}.nav-link:hover,.nav-link.active{background:#ffffff08;color:var(--ivory);border-left-color:var(--rust)}.sidebar-foot{padding:1rem 1.4rem 1.4rem;border-top:1px solid var(--line)}.progress-label{display:flex;justify-content:space-between;font-size:.68rem;letter-spacing:.12em}.progress-track{height:4px;background:var(--graphite);margin:.6rem 0 1rem}.progress-track i{display:block;height:100%;width:0;background:var(--rust);transition:width .3s}.site-frame{margin-left:285px;min-height:100vh}.topbar{position:sticky;top:0;z-index:10;background:#171514eb;backdrop-filter:blur(12px);min-height:70px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;padding:.8rem 3vw}.topbar #save-status{color:var(--muted);font-size:.78rem}.menu-button{display:none}.icon-button{background:none;border:1px solid var(--line);color:var(--ivory);padding:.4rem .65rem}main{min-height:calc(100vh - 70px)}.page{padding:clamp(2rem,5vw,5rem);max-width:1400px;margin:auto}.hero{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(280px,.85fr);gap:clamp(2rem,6vw,7rem);align-items:end;min-height:58vh;border-bottom:1px solid var(--line);padding-bottom:4rem}.hero h1,.page-title{font-family:var(--condensed);font-size:clamp(3.5rem,9vw,8rem);line-height:.82;letter-spacing:-.025em;margin:.65rem 0 1.5rem;text-transform:uppercase}.hero p,.lede{font-family:var(--serif);font-size:clamp(1.15rem,2vw,1.5rem);color:#d7cabb;max-width:750px}.accent{color:var(--rust)}.rule{width:100%;height:5px;background:var(--rust);margin:1rem 0 2rem}.grid{display:grid;gap:1.25rem}.grid.two{grid-template-columns:repeat(2,minmax(0,1fr))}.grid.three{grid-template-columns:repeat(3,minmax(0,1fr))}.card{background:var(--panel);border:1px solid var(--line);padding:clamp(1.2rem,2.5vw,2rem);position:relative}.card.paper{background:var(--paper);color:var(--ink);border-color:#d8cec0}.card h2,.card h3{margin-top:0;line-height:1.15}.card h2{font-family:var(--condensed);font-size:2rem;text-transform:uppercase}.card h3{font-size:1.05rem}.card p{color:var(--muted)}.paper p{color:#625950}.number{font-family:var(--condensed);font-size:3.2rem;line-height:1;color:var(--rust)}.button-row{display:flex;gap:.75rem;flex-wrap:wrap;margin-top:1rem}button,.button{border:0;background:var(--rust);color:#fff;padding:.8rem 1rem;font-weight:800;font-size:.75rem;letter-spacing:.08em;text-transform:uppercase;text-decoration:none;display:inline-flex;align-items:center;justify-content:center;gap:.5rem}button:hover,.button:hover{filter:brightness(1.12)}button.ghost,.ghost{background:transparent;border:1px solid var(--line);color:var(--ivory)}.paper .ghost{color:var(--ink);border-color:#a99d8f}button.small{font-size:.65rem;padding:.6rem .75rem}button.danger{background:#7c2c25}button.good{background:var(--good)}button:disabled{opacity:.45;cursor:not-allowed}.section{padding:4rem 0;border-bottom:1px solid var(--line)}.section-heading{display:flex;justify-content:space-between;gap:2rem;align-items:end;margin-bottom:1.5rem}.section-heading h2{font-family:var(--condensed);font-size:clamp(2rem,5vw,4.5rem);line-height:.9;margin:.3rem 0;text-transform:uppercase}.workflow{display:flex;flex-wrap:wrap;gap:.5rem;margin:2rem 0}.workflow span{border:1px solid var(--line);padding:.65rem .8rem;font-weight:800;font-size:.75rem}.workflow b{color:var(--rust);align-self:center}.diagnostic button{text-align:left;justify-content:flex-start;min-height:75px}.diagnostic-result{border-left:4px solid var(--gold);margin-top:1rem}.field{margin:0 0 1.15rem}.field label{display:block;font-size:.72rem;letter-spacing:.08em;font-weight:800;text-transform:uppercase;margin-bottom:.45rem}.field small{display:block;color:var(--muted);margin:.25rem 0 .5rem}.field input,.field textarea,.field select{width:100%;border:1px solid #857a70;background:#f8f3eb;color:#201d1b;padding:.85rem;border-radius:0}.field textarea{min-height:120px;resize:vertical}.dark-field input,.dark-field textarea,.dark-field select{background:#121110;color:var(--ivory);border-color:var(--line)}.field input:focus,.field textarea:focus,.field select:focus{outline:2px solid var(--gold);outline-offset:2px}.check{display:flex;align-items:flex-start;gap:.65rem}.check input{width:1.2rem;height:1.2rem;margin-top:.2rem;accent-color:var(--rust)}.bay-tabs{display:flex;gap:.5rem;overflow:auto;padding-bottom:.5rem;position:sticky;top:70px;background:var(--ink);z-index:4}.bay-tabs button{white-space:nowrap;background:transparent;border:1px solid var(--line)}.bay-tabs button.active{background:var(--rust)}.lesson{max-width:850px;margin:2rem auto;background:var(--paper);color:var(--ink);padding:clamp(1.5rem,5vw,4.5rem);box-shadow:var(--shadow)}.lesson h1,.lesson h2,.lesson h3{line-height:1.08}.lesson h1{font-family:var(--condensed);font-size:clamp(2.8rem,7vw,5.5rem);text-transform:uppercase}.lesson h2{font-family:var(--condensed);font-size:2.2rem;text-transform:uppercase;border-top:5px solid var(--rust);padding-top:1rem}.lesson h3{font-size:1.45rem;margin-top:2.4rem}.lesson blockquote{border-left:4px solid var(--rust);padding:.1rem 0 .1rem 1.2rem;margin:1.5rem 0;font-family:var(--serif);font-size:1.2rem}.lesson li{margin:.5rem 0}.lesson hr{border:0;border-top:1px solid #b7ac9f;margin:2rem 0}.lesson code{background:#e7ded2;padding:.1rem .25rem}.exercise{max-width:850px;margin:2rem auto;border:1px solid var(--line);padding:1.5rem;background:var(--panel)}.exercise h3{font-family:var(--condensed);font-size:2rem;text-transform:uppercase}.status-pill{display:inline-block;border:1px solid var(--line);padding:.25rem .55rem;font-size:.68rem;letter-spacing:.08em;text-transform:uppercase}.status-pill.done{background:var(--good);border-color:var(--good)}.builder-layout{display:grid;grid-template-columns:270px 1fr;gap:1.5rem}.builder-list button{width:100%;margin-bottom:.5rem;justify-content:flex-start;background:transparent;border:1px solid var(--line)}.builder-list button.active{background:var(--rust)}.output{background:#0e0d0c;border:1px solid var(--line);padding:1.2rem;white-space:pre-wrap;min-height:180px;font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:.86rem;color:#eee4d6}.inspection-item{border-bottom:1px solid #d9cfc2;padding:1rem 0}.inspection-item:last-child{border:0}.project{display:grid;grid-template-columns:1fr auto;gap:1rem;align-items:center}.project .meta{color:var(--muted);font-size:.8rem}.empty{text-align:center;padding:4rem 2rem;border:1px dashed var(--line);color:var(--muted)}.toast{position:fixed;right:1.5rem;bottom:1.5rem;background:var(--ivory);color:var(--ink);padding:.8rem 1.1rem;box-shadow:var(--shadow);transform:translateY(180%);transition:.25s;z-index:80;font-weight:700}.toast.show{transform:translateY(0)}dialog{background:transparent;border:0;color:var(--ivory)}dialog::backdrop{background:#000b}.dialog-card{background:var(--panel);border:1px solid var(--line);padding:2rem;max-width:500px;box-shadow:var(--shadow)}.callout{border-left:4px solid var(--rust);padding:1rem 1.2rem;background:#ffffff07}.mobile-only{display:none}
@media(max-width:900px){.sidebar{transform:translateX(-102%);transition:.25s;box-shadow:var(--shadow)}.sidebar.open{transform:translateX(0)}.site-frame{margin-left:0}.menu-button{display:block}.topbar{padding:.75rem 1rem}.page{padding:2rem 1rem 4rem}.hero{grid-template-columns:1fr;min-height:auto}.grid.two,.grid.three{grid-template-columns:1fr}.builder-layout{grid-template-columns:1fr}.builder-list{display:flex;overflow:auto;gap:.5rem}.builder-list button{width:auto;white-space:nowrap}.bay-tabs{top:69px}.section-heading{align-items:start;flex-direction:column}.mobile-only{display:block}}
@media(max-width:560px){.brand strong{font-size:2rem}.hero h1,.page-title{font-size:3.5rem}.project{grid-template-columns:1fr}.button-row>*{flex:1}.topbar .ghost{display:none}.lesson{padding:1.25rem;margin-left:-.25rem;margin-right:-.25rem}.lesson h1{font-size:2.75rem}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}