*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;overflow-x:hidden;background:var(--paper);color:var(--ink);font-family:Inter,"Segoe UI",sans-serif}
.skip{position:fixed;top:-5rem;left:1rem;z-index:50;padding:.8rem;background:var(--surface)}
.skip:focus{top:1rem}
.topbar{position:fixed;z-index:20;inset:0 0 auto 0;height:76px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;padding:0 1.5rem;border-bottom:1px solid var(--line);background:color-mix(in srgb,var(--paper) 92%,transparent);backdrop-filter:blur(18px)}
.brand{display:flex;flex-direction:column;align-items:center;color:inherit;text-align:center;text-decoration:none}
.brand span{color:var(--copper);font-size:.58rem;font-weight:800;letter-spacing:.22em}
.brand strong{margin-top:.18rem;color:var(--navy);font-family:Georgia,serif;font-size:.78rem;letter-spacing:.08em}
.menu{display:block;visibility:hidden}
.toolbar{justify-self:end;display:flex;gap:.35rem}
.round{width:auto;height:auto;min-width:40px;min-height:40px;border:1px solid var(--line);border-radius:50%;background:transparent;color:var(--ink);cursor:pointer}
.round:hover,.round:focus-visible,.secondary:hover{border-color:var(--copper);background:var(--surface)}
.sidebar{position:fixed;z-index:15;top:76px;bottom:0;left:0;width:300px;overflow:auto;padding:1.8rem 1.35rem;border-right:1px solid var(--line);background:var(--paper)}
.sidebar>label,.downloads span,.downloads>span{display:block;margin:0 0 .5rem;color:var(--muted);font-size:.7rem;font-weight:800;letter-spacing:.1em;text-transform:uppercase}
.sidebar input,.sidebar input[type=search]{width:100%;padding:.75rem;border:1px solid var(--line);border-radius:.4rem;background:var(--surface);color:var(--ink)}
.search-status{min-height:1.1em;color:var(--muted);font-size:.74rem}
.progress-card{margin:1rem 0 1.5rem;padding:1rem;border:1px solid var(--line);border-radius:.45rem;background:var(--surface)}
.progress-card span,.progress-card>span{font-size:.75rem;text-transform:uppercase}
.progress-card strong{float:right;color:var(--copper)}
.bar{height:5px;margin-top:.75rem;overflow:hidden;border-radius:1rem;background:var(--line)}
.bar i{display:block;width:0;height:100%;background:var(--copper);transition:width .25s}
.sidebar ol{margin:0;padding:0;list-style:none}
.sidebar li{margin:0;border-top:1px solid var(--line)}
.sidebar li.nav-divider{margin-top:1rem;border:0}
.sidebar li.nav-divider a,.nav-divider a{color:var(--copper);font-size:.68rem;font-weight:800;text-transform:uppercase}
.sidebar a{display:block;padding:.62rem .2rem;color:var(--muted);font-size:.86rem;text-decoration:none}
.sidebar a:hover,.sidebar a.active{color:var(--navy);transform:translateX(.2rem)}
.downloads{margin:1.8rem 0}
.downloads a{margin:0;padding:.35rem 0;background:transparent;color:var(--navy);font-weight:700}
.main{min-width:0;margin-left:300px}
.hero{min-width:0;min-height:calc(100vh - 76px);display:grid;place-content:center;justify-items:center;padding:5rem 2rem;text-align:center;background:radial-gradient(circle at 50% 40%,color-mix(in srgb,var(--copper) 12%,transparent),transparent 35%)}
.eyebrow,.section-kicker{color:var(--copper);font-size:.72rem;font-weight:850;letter-spacing:.2em;text-transform:uppercase}
.hero h1{max-width:100%;margin:1.2rem 0;color:var(--navy);font-family:Georgia,serif;font-size:clamp(4rem,8vw,7.2rem);font-weight:500;line-height:.9;letter-spacing:-.055em}
.hero h1 em{color:var(--copper);font-weight:400}
.hero .subtitle,.subtitle{max-width:720px;color:var(--muted);font:1.3rem/1.55 Georgia,serif}
.architecture{display:flex;max-width:100%;align-items:center;gap:1rem;margin:1.5rem 0;padding:1rem 1.25rem;border-top:1px solid var(--line);border-bottom:1px solid var(--line);color:var(--navy);font-weight:750}
.architecture span{min-width:0;display:flex;flex-direction:column;padding:0;border:0;background:transparent;box-shadow:none;font-family:inherit}
.architecture small{display:block;margin-top:.25rem;color:var(--muted);font:inherit;font-weight:400}
.architecture i{color:var(--copper)}
.hero blockquote{max-width:650px;margin:1.2rem 0 2rem;padding:0;border:0;color:var(--ink);font:italic 1.04rem/1.5 Georgia,serif}
.primary,.secondary{display:inline-block;width:auto;max-width:100%;padding:.75rem 1rem;border:1px solid var(--navy);border-radius:.25rem;background:var(--navy);color:var(--surface);font-weight:800;text-decoration:none;cursor:pointer}
.secondary{border-color:var(--line);background:var(--surface);color:var(--navy)}
.part-divider{min-height:65vh;display:grid;place-content:center;padding:4rem;text-align:center;background:var(--navy);color:var(--surface)}
.part-divider p{color:var(--copper);font-weight:800;letter-spacing:.15em;text-transform:uppercase}
.part-divider h2{max-width:800px;margin:.4rem auto;font:500 clamp(2.8rem,6vw,5.5rem)/1 Georgia,serif}
.part-divider span{font:italic 1.2rem Georgia,serif}
.book-section{max-width:900px;margin:0 auto 2rem;padding:6.5rem 5rem;background:var(--surface);box-shadow:var(--shadow);font:var(--reader)/1.78 Georgia,serif}
.book-section h1{margin:0 0 1.5rem;color:var(--navy);font-size:clamp(2.4rem,5vw,4.5rem);font-weight:500;line-height:1.04}
.book-section h2{margin:4rem 0 1.2rem;color:var(--navy);font-size:1.65em;font-weight:500;line-height:1.2}
.book-section h3{margin:2.5rem 0 1rem;color:var(--copper);font:800 .9em Inter,sans-serif;letter-spacing:.06em;text-transform:uppercase}
.book-section p{margin:0 0 1.2em;text-align:initial}
.book-section blockquote{margin:2rem 0;padding:1.2rem 1.5rem;border-left:3px solid var(--copper);background:color-mix(in srgb,var(--copper) 8%,transparent);font-style:italic}
.book-section li{margin:.45rem 0}
.book-section hr{margin:4rem 0;border:0;border-top:1px solid var(--line)}
.book-section table{width:100%;border-collapse:collapse;font-size:.9em}
.book-section th,.book-section td{padding:12px;text-align:left;vertical-align:top;border:1px solid var(--line)}
.book-section th{background:var(--paper)}
.table-scroll{overflow-x:auto}
.chapter{border-bottom:0}
.chapter-actions{display:flex;justify-content:space-between;align-items:center;gap:12px;margin:-3rem 0 3rem;padding-bottom:1rem;border-bottom:1px solid var(--line);font:700 .78rem Inter,sans-serif}
.favorite{border:0;background:transparent;color:var(--copper);font-weight:800;cursor:pointer}
.notes{margin-top:4rem;padding:1.5rem;border:1px solid var(--line);border-radius:.4rem;background:color-mix(in srgb,var(--paper) 60%,transparent);font-family:Inter,sans-serif}
.notes label{display:block;margin-bottom:.6rem;font-weight:800}
.notes textarea{width:100%;margin-top:0;padding:1rem;border:1px solid var(--line);border-radius:.3rem;background:var(--surface);color:var(--ink);font:1rem/1.5 Georgia,serif}
.saved{display:block;min-height:1.2em;color:var(--muted);font-size:.75rem}
.page-nav{display:flex;justify-content:space-between;gap:1rem;margin-top:4rem;padding-top:1.5rem;border-top:1px solid var(--line);font:800 .75rem Inter,sans-serif;text-transform:uppercase}
.page-nav a{color:var(--copper)}
.tool-section fieldset{margin:1rem 0;padding:1rem;border:1px solid var(--line);border-radius:.35rem}
.tool-section legend{color:var(--navy);font-weight:800}
.tool-section fieldset label{display:grid;grid-template-columns:1fr auto;gap:.5rem;font-family:Inter,sans-serif}
.tool-section input[type=range]{grid-column:1/-1;width:100%;accent-color:var(--copper)}
.evaluation-result{margin-top:2rem;padding:1.5rem;border-left:4px solid var(--copper);background:var(--paper)}
.score-row{display:grid;grid-template-columns:150px 1fr 35px;gap:.75rem;align-items:center;margin:.5rem 0;font:700 .78rem Inter,sans-serif}
.score-row i{height:7px;background:var(--line)}
.score-row i b{display:block;height:100%;background:var(--copper)}
.floating-actions{position:fixed;z-index:10;right:1rem;bottom:1rem;display:flex;gap:.5rem}
.no-results{padding:5rem;text-align:center}
body.reader .sidebar,body.reader .topbar,body.reader .floating-actions{display:none}
body.reader .main{margin-left:0}
body.reader .book-section{max-width:820px}
mark{background:color-mix(in srgb,var(--copper) 45%,transparent);color:inherit}

@media(max-width:980px){
    .menu{display:block;visibility:visible;justify-self:start}
    .sidebar{transform:translateX(-105%);transition:.25s}
    .sidebar.open{transform:none;box-shadow:var(--shadow)}
    .main{width:auto;margin-left:0}
    .book-section{padding:5rem 2.5rem}
    .toolbar .font-down,.toolbar .font-up{display:none}
}

@media(max-width:580px){
    .topbar{padding:0 .75rem}
    .brand span{display:none}
    .brand strong{max-width:165px;text-align:center;font-size:.66rem}
    .hero{padding:4rem 1.2rem}
    .hero h1{font-size:3.05rem}
    .architecture{width:100%;gap:.35rem;padding:.8rem .2rem;font-size:.7rem}
    .architecture i{font-size:.7rem}
    .book-section{padding:4rem 1.2rem;box-shadow:none}
    .part-divider{padding:2rem}
    .chapter-actions{margin:-2rem 0 2rem}
    .floating-actions{position:static;justify-content:center;padding:1rem}
    .score-row{grid-template-columns:100px 1fr 28px}
}

@media print{
    .topbar,.sidebar,.floating-actions,.chapter-actions,.notes,.page-nav{display:none!important}
    .main{margin:0}
    .hero,.part-divider,.book-section{max-width:none;min-height:auto;margin:0;padding:1in;box-shadow:none;page-break-before:always}
    .book-section{font-size:11pt}
}