:root{color-scheme:light;--ink:#182d3b;--muted:#536674;--accent:#126c76;--navy:#101f2c;--line:#d7e0e4;--paper:#fcfdfd}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:2rem}body{margin:0;background:var(--paper);color:var(--ink);font-family:system-ui,-apple-system,sans-serif}a{color:var(--accent);text-underline-offset:.22em}a:hover{text-decoration-thickness:2px}a:focus-visible,summary:focus-visible{outline:3px solid #d19328;outline-offset:5px}.skip{position:absolute;left:1rem;top:-5rem;background:white;padding:1rem;z-index:10}.skip:focus{top:1rem}.masthead{background:var(--navy);color:#fff;border-top:4px solid #3aa3ab}.topbar{max-width:1240px;margin:auto;min-height:116px;display:flex;align-items:center;gap:4rem;padding:1.5rem 2rem}.brand{font-size:.95rem;line-height:1.6;letter-spacing:.16em;font-weight:700;text-decoration:none;color:#fff}.brand span{font-size:1.2rem;letter-spacing:.12em}.topbar nav{display:flex;gap:1.5rem;flex-wrap:wrap}.topbar nav a{color:#dbe6ea;font-size:.95rem;text-decoration:none}.topbar nav a:hover,.topbar nav a[aria-current]{color:white;text-decoration:underline}.languages{margin-left:auto}.preview{padding:.65rem 2rem;text-align:center;background:#eaf1f3;color:#405765;font-size:.875rem;border-bottom:1px solid var(--line)}main{min-height:65vh}.intro{max-width:1160px;margin:0 auto;padding:5rem 2rem 3.5rem}.eyebrow{text-transform:uppercase;letter-spacing:.14em;font-size:.8rem;font-weight:650;color:var(--accent);margin:0 0 1.25rem}h1,h2,h3{font-family:Georgia,'Times New Roman',serif;font-weight:400}h1{font-size:clamp(2.5rem,5vw,4.6rem);line-height:1.1;letter-spacing:-.035em;margin:0 0 1.5rem;max-width:950px}.lead{font-family:Georgia,serif;font-size:1.35rem;line-height:1.7;max-width:700px;color:var(--muted)}.collection{max-width:1096px;margin:0 auto 5rem;border-top:1px solid var(--line);padding:2.5rem 0;display:grid;grid-template-columns:1fr 2fr;gap:3rem}.collection h2{font-size:2.2rem;margin:.5rem 0}.collection p{color:var(--muted);line-height:1.7}.chapter-link{display:flex;align-items:center;gap:1.5rem;border-block:1px solid var(--line);padding:2rem .5rem;text-decoration:none}.chapter-link:hover{background:#eef4f5}.chapter-link .number{font-family:Georgia,serif;font-size:3rem;color:#81949f}.chapter-link small{display:block;font-size:.85rem;margin-bottom:.5rem;color:var(--muted)}.chapter-link strong{font-family:Georgia,serif;font-size:1.6rem;font-weight:400;color:var(--ink)}.chapter-link>span:last-child{margin-left:auto}.article-shell{max-width:1160px;margin:auto;padding:2rem}.breadcrumbs{display:flex;flex-wrap:wrap;gap:.7rem;color:var(--muted);font-size:.9rem}.article-header{padding:3.5rem 0 3rem;border-bottom:1px solid var(--line)}.article-header h1{max-width:850px}.byline{color:var(--muted);font-size:.95rem}.byline span{margin:0 .75rem}.reading-layout{display:grid;grid-template-columns:230px minmax(0,720px);gap:4rem;padding-top:3rem;justify-content:space-between}aside details{position:sticky;top:2rem}summary{font-weight:600;cursor:pointer;font-size:.95rem}#TableOfContents ul{list-style:none;padding:0;margin:1.25rem 0}#TableOfContents li{margin:.85rem 0}#TableOfContents a{font-size:.95rem;text-decoration:none;line-height:1.5;color:var(--muted)}#TableOfContents a:hover{color:var(--accent);text-decoration:underline}.prose{font-family:Georgia,'Times New Roman',serif;font-size:1.2rem;line-height:1.85;overflow-wrap:break-word}.prose>p:first-child{font-size:1.4rem;line-height:1.75}.prose p{margin:0 0 1.5rem}.prose h2{font-size:2rem;line-height:1.3;margin:3.5rem 0 1.4rem}.prose h2:first-child{margin-top:0}.prose li{margin:.55rem 0}.prose ul,.prose ol{padding-left:1.5rem;margin-bottom:1.75rem}.prose ul:has(strong),.prose ol{background:#edf4f5;border-left:3px solid var(--accent);padding:1rem 1.5rem 1rem 3rem}.prose #ein-bild-aufbauen~ul,.prose #build-a-picture~ul{border-left:3px solid #8ca6ae;padding-left:2rem}.prose #feldprinzip,.prose #field-principle{border-top:3px solid var(--accent);padding-top:2rem}.read-next{border-top:1px solid var(--line);margin:3rem 0 5rem;padding-top:1.5rem;display:flex;justify-content:space-between;gap:2rem}footer{background:var(--navy);color:#d4e0e5;padding:3rem max(2rem,calc((100vw - 1096px)/2));display:flex;justify-content:space-between;gap:3rem;font-size:.9rem;line-height:1.8}footer>p{max-width:310px}footer strong{color:white}footer em{font-family:Georgia,serif}@media(max-width:850px){.topbar{gap:1.5rem;flex-wrap:wrap}.topbar nav{gap:1rem}.languages{margin-left:0}.reading-layout{display:block}aside{margin-bottom:2.5rem;padding-bottom:1.5rem;border-bottom:1px solid var(--line)}aside details{position:static}.collection{margin-inline:2rem;grid-template-columns:1fr;gap:1rem}.article-header{padding-top:2.5rem}.intro{padding-top:3rem}footer{flex-direction:column;gap:1rem}}@media(max-width:480px){.topbar,.article-shell{padding:1.25rem}.topbar{align-items:flex-start}.brand{width:100%}.languages{margin-left:auto}.prose{font-size:1.125rem}.prose>p:first-child{font-size:1.25rem}.intro{padding-inline:1.25rem}.collection{margin-inline:1.25rem}.chapter-link{gap:1rem}.article-header h1{font-size:2.7rem}footer{padding:2rem 1.25rem}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

/* Dreispaltige Leseseite: Kapitel, Text, Abschnittsübersicht. */
.article-shell{max-width:1480px;padding-inline:2rem}
.article-header{margin-left:calc(210px + 2.5rem);padding-bottom:2.5rem}
.article-header h1{font-size:clamp(2.5rem,4.4vw,4.4rem);max-width:800px}
.reading-layout{grid-template-columns:210px minmax(0,720px) 190px;gap:2.5rem;align-items:start}
.chapter-rail{grid-column:1;grid-row:1}
.reading-body{grid-column:2;grid-row:1;min-width:0}
.toc-rail{grid-column:3;grid-row:1}
.reading-layout aside{position:sticky;top:2rem;max-height:calc(100vh - 4rem);overflow:auto;padding:.4rem}
.reading-layout aside details{position:static}
.rail-volume{font-size:.8rem;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin:1.75rem 0 1rem}
.chapter-rail ol{list-style:none;margin:0 0 1.5rem;padding:0}
.chapter-rail li a{display:flex;gap:.7rem;padding:.9rem .7rem;line-height:1.5;font-size:.95rem;text-decoration:none;border-left:2px solid transparent}
.chapter-rail li a[aria-current]{background:#edf4f5;border-color:var(--accent);color:var(--ink)}
.chapter-rail li a span{color:var(--accent);font-size:.8rem;padding-top:.15rem}
.rail-overview{font-size:.875rem}
.prose #ein-bild-aufbauen~ul,.prose #build-a-picture~ul{background:#f0f5f6;padding:1rem 1.5rem 1rem 3rem}
.prose #feldprinzip~p,.prose #field-principle~p{padding-left:1.25rem;border-left:2px solid #b3cdd1}
@media(max-width:1149px){
.article-shell{max-width:850px}.article-header{margin-left:0}
.reading-layout{display:flex;flex-direction:column;gap:0;padding-top:1.5rem}
.reading-layout aside{position:static;max-height:none;width:100%;padding:1rem 0;margin:0;border-bottom:1px solid var(--line)}
.reading-body{width:100%;padding-top:2.5rem}
.reading-menu summary{padding:.3rem 0}
}
@media(max-width:480px){.article-shell{padding-inline:1.25rem}.article-header h1{font-size:2.7rem}}

.prose figure{margin:2.5rem 0;padding:1rem;background:#f0f5f6;border:1px solid var(--line)}.prose figure img{display:block;width:100%;height:auto}.prose figcaption{margin-top:1rem;font-family:system-ui,sans-serif;font-size:.9rem;line-height:1.65;color:var(--muted)}.read-next{flex-wrap:wrap}.read-next a{max-width:100%}

.part-heading{font-family:system-ui,sans-serif;font-size:.95rem;font-weight:650;letter-spacing:.03em;color:var(--muted);margin:2.5rem 0 1rem}.part-heading:first-child{margin-top:0}.rail-part{font-size:.8rem;font-weight:650;color:var(--muted);line-height:1.6;margin:1.5rem .5rem .5rem}.prose table{display:block;overflow-x:auto;max-width:100%;border-collapse:collapse;font-size:1rem;line-height:1.6;margin:2rem 0}.prose th,.prose td{padding:.65rem;border:1px solid var(--line);text-align:left}.prose th{background:#edf4f5}.prose pre{overflow:auto;max-width:100%;padding:1rem;background:#edf4f5}.prose code{font-size:.85em}

.prose #schlussprinzip,.prose #closing-principle{border-top:3px solid var(--accent);padding-top:2rem}.prose #schlussprinzip~p,.prose #closing-principle~p{padding-left:1.25rem;border-left:2px solid #b3cdd1}

.reading-layout{justify-content:start}.chapter-rail li a .rail-title{font-size:.95rem;color:inherit;padding-top:0;min-width:0}.chapter-rail li a>span:first-child{flex:none}.chapter-rail li a .rail-title em{display:inline}

.support-section{max-width:1096px;margin:0 auto 4rem;padding:2rem 0;border-top:1px solid var(--line)}.companion-links h2{font-family:system-ui,sans-serif;font-size:.95rem;font-weight:650;margin:1.5rem 0 1rem}.companion-links ul{list-style:none;padding:0;margin:0 0 1.5rem}.companion-links li{margin:.7rem 0}.companion-links a{font-size:.95rem;line-height:1.5}.companion-links a[aria-current]{font-weight:650}.context-note{font-size:.95rem;line-height:1.65;border-left:3px solid var(--accent);background:#edf4f5;padding:1rem;margin:0 0 2rem}.support-section ul{display:flex;flex-wrap:wrap;gap:1rem 2rem}@media(max-width:1149px){.support-section{margin-inline:2rem}}@media(max-width:480px){.support-section{margin-inline:1.25rem}.topbar .languages{margin-left:0}}

.edition-intro{padding-bottom:1.5rem}.edition-actions{display:flex;flex-wrap:wrap;align-items:center;gap:1rem 2rem;margin:1.5rem 0}.pdf-open{background:var(--accent);color:white;padding:.85rem 1.1rem;text-decoration:none}.edition-viewer{max-width:1160px;padding:0 2rem 4rem;margin:auto}.edition-viewer>p{font-size:.95rem;color:var(--muted);line-height:1.6}.edition-viewer iframe{width:100%;height:80vh;min-height:600px;border:1px solid var(--line);background:#eaf1f3}.topbar{gap:2rem}.topbar nav{gap:1rem}.languages{flex-shrink:0}@media(max-width:1100px){.topbar{flex-wrap:wrap}}@media(max-width:480px){.edition-viewer{padding-inline:1.25rem}.edition-viewer iframe{min-height:480px}}

footer a{color:#d4e0e5}footer>div:last-child{max-width:340px}

/* Startseite der Buchreihe; jeder veröffentlichte Band erhält eine eigene Karte. */
.home-intro{padding-bottom:4rem}.home-intro h1{max-width:850px}.home-author{margin-top:2rem;color:var(--muted);font-size:.9rem}
.home-volumes,.home-extras{max-width:1096px;margin:0 auto 4rem}.home-volumes>h2{font-family:system-ui,sans-serif;font-weight:650}
.volume-card{display:grid;grid-template-columns:1fr 1.4fr;border:1px solid var(--line);margin-top:1.5rem;background:#f0f5f6}
.volume-identity{padding:3rem;border-left:4px solid var(--accent)}.volume-identity h3{font-size:clamp(2.5rem,4vw,3.5rem);margin:0 0 1rem}.volume-subtitle{font-family:Georgia,serif;color:var(--muted);font-size:1.15rem}
.volume-details{padding:3rem;align-self:center}.volume-details>p,.home-extras p:not(.eyebrow){line-height:1.8;color:var(--muted);margin-top:0}.home-actions{display:flex;flex-wrap:wrap;align-items:center;gap:1.5rem;margin-top:2rem}.home-button{display:inline-flex;gap:1.5rem;background:var(--accent);color:white;text-decoration:none;padding:1rem 1.25rem}.home-button:hover{background:var(--navy)}
.home-extras{display:grid;grid-template-columns:1fr 1fr;gap:4rem;padding-top:1rem}.home-extras>div{border-top:1px solid var(--line);padding-top:2rem}.home-extras h2{font-size:2rem;margin:0 0 1.25rem}.home-extras a{display:inline-block;margin-top:.5rem}
@media(max-width:1149px){.home-volumes,.home-extras{margin-inline:2rem}}
@media(max-width:750px){.volume-card,.home-extras{grid-template-columns:1fr}.volume-identity{padding:2rem 2rem 1rem}.volume-details{padding:0 2rem 2rem}.home-extras{gap:2.5rem}}
@media(max-width:480px){.home-volumes,.home-extras{margin-inline:1.25rem}.volume-identity{padding:1.5rem 1.25rem 1rem}.volume-details{padding:0 1.25rem 1.5rem}.home-intro{padding-bottom:2.5rem}}

.volume-switch{display:flex;gap:1rem;flex-wrap:wrap;margin:1.5rem 0}.volume-switch a{border:1px solid var(--line);padding:.65rem 1rem;text-decoration:none}.volume-switch a[aria-current]{background:var(--accent);color:white;border-color:var(--accent)}