@font-face{font-family:"Source Sans 3";src:url("fonts/source-sans-3-roman.woff2") format("woff2");font-style:normal;font-weight:200 900;font-display:swap}
@font-face{font-family:"Source Sans 3";src:url("fonts/source-sans-3-italic.woff2") format("woff2");font-style:italic;font-weight:200 900;font-display:swap}
@font-face{font-family:"Source Serif 4";src:url("fonts/source-serif-4-roman.woff2") format("woff2");font-style:normal;font-weight:200 900;font-display:swap}
@font-face{font-family:"Source Serif 4";src:url("fonts/source-serif-4-italic.woff2") format("woff2");font-style:italic;font-weight:200 900;font-display:swap}
:root{--paper:#f7f5f0;--surface:#fffefa;--ink:#1d2927;--muted:#586460;--line:#c8d0ca;--accent:#9d442b;--wash:#e9ede7;--book-size:1.09rem;--font-sans:"Source Sans 3",sans-serif;--font-serif:"Source Serif 4",serif;--font-display:"Source Serif 4",serif;--font-micro:"Source Sans 3",sans-serif;color-scheme:light}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font:400 1rem/1.55 var(--font-sans)}a{color:inherit;text-decoration-thickness:1px;text-underline-offset:.2em}a:hover{color:var(--accent)}a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid var(--accent);outline-offset:3px}button,input{font:inherit}.skip{position:absolute;z-index:9;top:-5rem;left:1rem;padding:.6rem 1rem;background:var(--ink);color:var(--surface)}.skip:focus{top:.75rem;color:var(--surface)}
.site-header{display:flex;align-items:center;justify-content:space-between;gap:1.25rem;min-height:4.25rem;padding:.5rem clamp(1rem,4vw,4rem);border-bottom:1px solid var(--line);background:var(--surface)}.wordmark{font-size:1.1rem;font-weight:750;letter-spacing:-.045em;text-decoration:none;white-space:nowrap}.wordmark span{margin-left:.16em;color:var(--accent)}.site-header nav{display:flex;align-items:center;gap:clamp(.75rem,2.5vw,2rem);font-size:.9rem;font-weight:600}.site-header nav a{display:inline-flex;align-items:center;min-height:44px;text-decoration:none}.site-header nav a:hover{text-decoration:underline}.eyebrow{font:600 .78rem/1.4 var(--font-micro);color:var(--accent);letter-spacing:.045em;margin:0 0 1rem}
.home{max-width:1600px;margin:auto}.hero{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(250px,.9fr);align-items:center;gap:clamp(2rem,6vw,7rem);padding:clamp(3rem,6vw,6rem) clamp(1.25rem,7vw,8rem);background:var(--wash);border-bottom:1px solid var(--line)}.hero-copy{max-width:40rem}.hero h1{font:750 1.05rem/1.25 var(--font-micro);letter-spacing:.035em;margin:0 0 1.4rem}.hero-lead{font:450 clamp(2.7rem,4.8vw,5.1rem)/1.08 var(--font-display);letter-spacing:-.014em;margin:0 0 1.6rem;max-width:17ch}.deck{font:400 clamp(1.13rem,1.5vw,1.35rem)/1.5 var(--font-serif);max-width:35ch;margin:0}.hero-actions{display:flex;align-items:center;flex-wrap:wrap;gap:1.15rem 1.7rem;margin-top:2.3rem}.button{display:inline-flex;align-items:center;justify-content:space-between;gap:2rem;min-height:50px;padding:.75rem 1.1rem;text-decoration:none;font-weight:650}.primary{background:var(--ink);color:var(--surface)}.primary:hover{background:var(--accent);color:#fff}.text-link{font-weight:600}.cover-frame{width:min(100%,350px);justify-self:center;background:#111;padding:0;box-shadow:12px 17px 30px #172b261d}.cover-frame img{display:block;width:100%;height:auto}
.intro,.structure,.downloads{padding:clamp(3.5rem,7vw,6.5rem) clamp(1.25rem,7vw,8rem);border-bottom:1px solid var(--line)}.intro{max-width:1100px}.intro h2,.structure h2,.downloads h2{font:550 clamp(2.15rem,3.8vw,3.8rem)/1.13 var(--font-display);letter-spacing:-.014em;margin:0 0 1.6rem}.intro p:not(.eyebrow){font:400 1.18rem/1.7 var(--font-serif);max-width:66ch;margin:0 0 1.15rem}.structure{display:grid;grid-template-columns:minmax(220px,.75fr) minmax(0,1.25fr);gap:clamp(2rem,5vw,5rem);background:var(--surface)}.structure ol{margin:0;padding:0;list-style:none}.structure li{border-top:1px solid var(--line)}.structure li:last-child{border-bottom:1px solid var(--line)}.structure li a{display:block;padding:.9rem 0;font:500 1.2rem/1.35 var(--font-serif);text-decoration:none}.structure li a:hover{text-decoration:underline}.downloads>p:not(.eyebrow){font:400 1.14rem/1.55 var(--font-serif);max-width:54ch}.download-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0;max-width:850px;margin-top:2rem;border-top:1px solid var(--line)}.download-grid a{display:grid;grid-template-columns:1fr auto;gap:.2rem;padding:1rem .6rem 1rem 0;border-bottom:1px solid var(--line);text-decoration:none}.download-grid a:first-child{margin-right:1.25rem}.download-grid strong{font:550 1.38rem/1.25 var(--font-serif)}.download-grid span{grid-column:1;color:var(--muted);font-size:.9rem}.download-grid b{grid-column:2;grid-row:1/3;color:var(--accent);font-size:1.5rem;align-self:center}
.reader{display:grid;grid-template-columns:minmax(220px,300px) minmax(0,1fr);max-width:1550px;margin:auto}.reader-rail{border-right:1px solid var(--line);background:var(--surface)}.rail-inner{position:sticky;top:0;max-height:100vh;overflow:auto;padding:2.25rem 1.2rem 2rem clamp(1rem,3vw,3rem)}.rail-inner h2{font:550 1.55rem/1.2 var(--font-display);margin:0 0 1.2rem}.toc-list{list-style:none;margin:0;padding:0}.toc-list li{margin:.42rem 0}.toc-list a{display:block;font-size:.88rem;line-height:1.35;text-decoration:none}.toc-list a:hover{text-decoration:underline}.toc-l2{padding-left:.85rem}.toc-l3{padding-left:1.4rem}.reading-column{width:100%;min-width:0;max-width:920px;padding:0 clamp(1rem,5vw,5rem) 5rem}.reading-tools{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:1rem 0;border-bottom:1px solid var(--line);color:var(--muted);font-size:.82rem}.tool-buttons{display:flex;gap:.4rem}.tool-buttons button{min-width:44px;min-height:44px;padding:.4rem .55rem;border:1px solid var(--line);background:var(--surface);color:var(--ink);cursor:pointer}.tool-buttons button:hover{border-color:var(--accent)}.mobile-toc{display:none}.search-panel{padding:1.2rem 0;border-bottom:1px solid var(--line)}.search-panel summary{cursor:pointer;font:500 1.2rem/1.3 var(--font-serif)}.search-inner{padding-top:1rem}.search-panel label{display:block;font-size:.9rem;margin-bottom:.35rem}.search-row{display:flex;gap:.5rem}.search-row input{width:100%;min-width:0;min-height:44px;padding:.55rem .7rem;border:1px solid var(--line);background:var(--surface);color:var(--ink)}.search-row button{min-height:44px;padding:.55rem 1rem;border:0;background:var(--ink);color:var(--surface);cursor:pointer}.search-row button:hover{background:var(--accent)}#search-status{margin-top:.5rem;color:var(--muted);font-size:.9rem}#search-results{max-height:25rem;overflow:auto;padding-left:1.4rem;margin:1rem 0 0}#search-results li{margin:0 0 1rem}#search-results a{font-weight:650}#search-results p{font:400 .98rem/1.5 var(--font-serif);margin:.25rem 0}
.book{font:400 var(--book-size)/1.7 var(--font-serif);overflow-wrap:anywhere;max-width:66ch;font-optical-sizing:auto}.book h1,.book h2,.book h3,.book h4{font-family:var(--font-display);line-height:1.17;scroll-margin-top:1.5rem;break-after:avoid}.book h1{font-size:clamp(2.25rem,3.7vw,3.4rem);font-weight:600;letter-spacing:-.014em;margin:4.5rem 0 1.6rem;padding-top:2rem;border-top:1px solid var(--line)}.book h1:first-child{margin-top:2.5rem;padding-top:0;border:0}.book h2{font-size:clamp(1.65rem,2.2vw,2.15rem);font-weight:600;margin:3.4rem 0 1rem}.book h3{font-size:1.28em;font-weight:600;margin:2.5rem 0 .9rem}.book h4{font-size:1.1em;font-weight:600;margin:2rem 0 .65rem}.book p{margin:0 0 1.25em}.book ul,.book ol{padding-left:1.4em}.book li{margin:.35em 0}.book a{color:var(--accent)}.book blockquote{margin:2rem 0;padding:.35rem 1.2rem;border-left:3px solid var(--accent);background:var(--wash)}.book table{display:block;max-width:100%;overflow-x:auto;border-collapse:collapse;margin:1.6rem 0 2rem;font-size:.88em;line-height:1.48}.book td,.book th{min-width:8rem;padding:.65rem .7rem;border:1px solid var(--line);vertical-align:top}.book th{text-align:left;background:var(--wash)}.book-figure{margin:2.5rem 0 3rem;padding:1rem 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.book-figure img{display:block;max-width:100%;height:auto;margin:auto}.book-figure figcaption{margin:.9rem 0 0;color:var(--muted);font:400 .9rem/1.5 var(--font-sans)}.endmark{text-align:center;color:var(--accent);padding:3rem}.book-end{text-align:center;font-size:.95rem}.site-footer{display:flex;justify-content:space-between;flex-wrap:wrap;gap:1rem;padding:1.4rem clamp(1.25rem,4vw,4rem);border-top:1px solid var(--line);color:var(--muted);font-size:.84rem}.site-footer a{text-decoration:none}
[data-theme="dark"]{--paper:#171e1c;--surface:#202a26;--ink:#eeeae0;--muted:#b8c5bd;--line:#44524a;--accent:#e5a286;--wash:#26352e;color-scheme:dark}
@media(max-width:1024px){.reader{display:block}.reader-rail{display:none}.reading-column{max-width:820px;margin:auto}.mobile-toc{display:block;padding:1rem 0;border-bottom:1px solid var(--line)}.mobile-toc summary{cursor:pointer;font-weight:600}.mobile-toc nav{margin-top:1rem}.hero{grid-template-columns:minmax(0,1fr) minmax(200px,.6fr)}}
@media(max-width:767px){.hero{grid-template-columns:1fr;gap:2.5rem;padding:3rem 1.25rem}.hero-lead{font-size:clamp(2.6rem,10vw,4rem)}.cover-frame{width:min(65vw,270px);justify-self:start}.structure{grid-template-columns:1fr;gap:1rem}.download-grid{grid-template-columns:1fr}.download-grid a:first-child{margin-right:0}.reading-tools>span{max-width:8rem}.site-header nav{gap:.9rem;font-size:.82rem}}
@media(max-width:390px){.site-header{gap:.6rem}.wordmark{font-size:.98rem}.site-header nav{gap:.5rem;font-size:.74rem}.reading-column{padding-left:1rem;padding-right:1rem}.book-figure{margin-left:-.2rem;margin-right:-.2rem}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
@media print{.site-header,.reader-rail,.reading-tools,.search-panel,.mobile-toc,.site-footer,.book-end{display:none!important}.reader{display:block}.reading-column{max-width:none;padding:0}.book{font-size:11pt}.book h1{break-before:page}}