@charset "UTF-8";
/* Explore Concord — shared, dependency-free author and reference layouts. */
:root{--paper:#f5f1e8;--white:#fffcf6;--ink:#232d2c;--muted:#606962;--copper:#9c573d;--line:#d7d6ca;--blue:#385c71;--forest:#264c40;--gold:#a08040;--serif:Georgia,'Times New Roman',serif;--sans:'Segoe UI',Arial,sans-serif;--radius:4px}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:100px}body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);font-size:16px;line-height:1.65}a{color:inherit;text-underline-offset:4px}button,input,select{font:inherit}button,a,input,select{touch-action:manipulation}button{cursor:pointer}img,svg{max-width:100%;display:block}img{height:auto}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid #a65b32;outline-offset:5px}h1,h2,h3,p,figure{margin-top:0}h1,h2,h3{line-height:1.08;font-weight:400}h1,h2{font-family:var(--serif);letter-spacing:-.045em}h1{font-size:clamp(3rem,7vw,6.7rem);max-width:1000px;margin-bottom:28px}h2{font-size:clamp(2.2rem,4vw,4rem);margin-bottom:24px}h3{font-size:1.35rem;line-height:1.25}p{margin-bottom:1.25em}a,button{ -webkit-tap-highlight-color:transparent}[hidden]{display:none!important}.skip{position:fixed;left:16px;top:-100px;z-index:20;background:var(--white);padding:12px}.skip:focus{top:12px}.container{width:min(1320px,calc(100% - 112px));margin:auto}.eyebrow{font-size:.7rem;font-weight:650;letter-spacing:.16em;text-transform:uppercase;line-height:1.5;color:var(--copper);margin-bottom:20px}.eyebrow.light{color:#e7c5a4}.lede{font-size:1.15rem;line-height:1.65;max-width:680px;color:var(--muted)}.topbar{min-height:92px;background:var(--paper);border-bottom:1px solid var(--line);position:relative;z-index:5}.topbar-inner{min-height:92px;display:flex;align-items:center;gap:28px}.brand{text-decoration:none;font-size:1.08rem;font-weight:650;letter-spacing:-.025em;line-height:1.25;flex-shrink:0}.brand span{display:block;font-size:.6rem;letter-spacing:.17em;text-transform:uppercase;font-weight:500;color:var(--muted);margin-top:5px}.nav{display:flex;align-items:center;gap:24px;margin-left:auto}.nav a{font-size:.82rem;text-decoration:none}.nav a[aria-current=page]{color:var(--copper);text-decoration:underline}.nav a:hover{text-decoration:underline}.icon-button{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:transparent;border:1px solid var(--line);border-radius:var(--radius);padding:8px 12px;font-size:.8rem;white-space:nowrap}.search-trigger svg{width:17px;height:17px;fill:none;stroke:currentColor;stroke-width:1.7}.menu-button{display:none}.button{display:inline-flex;align-items:center;justify-content:center;gap:20px;text-decoration:none;background:var(--ink);color:var(--white);padding:13px 22px;border:1px solid var(--ink);border-radius:2px;font-size:.83rem;font-weight:600;line-height:1.4}.button:hover{background:var(--forest);border-color:var(--forest)}.button.secondary{background:transparent;color:var(--ink);border-color:var(--line)}.button.light{background:var(--paper);color:var(--ink);border-color:var(--paper)}.button.outline-light{border-color:#d3d9ce8c;background:transparent;color:var(--white)}.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}.text-link{font-size:.88rem;font-weight:600;text-decoration:none;display:inline-flex;gap:24px;align-items:center;border-bottom:1px solid var(--copper);padding-bottom:5px}.text-link:after{content:'↗';color:var(--copper)}
.hero{position:relative;min-height:650px;color:var(--white);display:flex;align-items:flex-end;isolation:isolate;overflow:hidden;background:#283532}.hero>img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:-2}.hero:after{content:'';position:absolute;inset:0;background:linear-gradient(90deg,rgba(12,28,26,.9) 0%,rgba(12,25,24,.57) 49%,rgba(12,25,24,.06) 100%);z-index:-1}.hero-content{padding:80px 0 72px}.hero h1{max-width:800px}.hero .lede{color:#e6e7dc;max-width:520px;font-size:1.07rem}.hero-credit{position:absolute;bottom:28px;right:40px;font-size:.65rem;letter-spacing:.13em;text-transform:uppercase;color:#f1ead9}.civic-strip{display:flex;align-items:center;gap:32px;justify-content:space-between;border-bottom:1px solid var(--line);padding:20px 0;font-size:.69rem;text-transform:uppercase;letter-spacing:.12em}.civic-strip span:first-child{color:var(--copper)}.section{padding-top:90px;padding-bottom:90px}.section+.section{border-top:1px solid var(--line)}.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:40px;margin-bottom:42px}.section-head h2{margin-bottom:0}.section-head p{max-width:430px;color:var(--muted);margin-bottom:0}.section-head .eyebrow{margin-bottom:14px}.home-intro{display:grid;grid-template-columns:1fr 1fr;gap:90px;align-items:center}.home-intro h2{max-width:580px}.home-intro p{color:var(--muted)}.intro-number{font-family:var(--serif);font-size:4rem;color:#b7b2a1;line-height:1;margin-bottom:25px}.editorial-grid{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:26px}.editorial-card{text-decoration:none;border-top:1px solid var(--line);padding-top:20px}.editorial-card img{width:100%;height:230px;object-fit:cover;margin-bottom:24px}.editorial-card:first-child img{height:300px}.editorial-card h3{font-family:var(--serif);font-size:1.8rem;letter-spacing:-.025em;margin:12px 0}.editorial-card p{color:var(--muted);font-size:.9rem}.editorial-card .eyebrow{margin-bottom:0}.arrow-line{display:flex;justify-content:space-between;border-top:1px solid var(--line);padding-top:15px;font-size:.8rem}.arrow-line span:last-child{color:var(--copper)}.service-band{background:#eae9df}.service-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border-left:1px solid #cfcec0;border-top:1px solid #cfcec0}.service-card{padding:28px;min-height:180px;text-decoration:none;border-right:1px solid #cfcec0;border-bottom:1px solid #cfcec0;position:relative;transition:background .18s}.service-card:hover{background:#f7f4eb}.service-code{color:var(--accent,var(--copper));font-size:.72rem;letter-spacing:.15em;font-weight:700;display:block;margin-bottom:20px}.service-card h3{font-family:var(--serif);font-size:1.65rem;margin-bottom:12px}.service-card p{font-size:.84rem;color:var(--muted);margin:0;padding-right:30px}.service-card:after{content:'↗';position:absolute;bottom:25px;right:25px;color:var(--accent,var(--copper))}.feature-split{display:grid;grid-template-columns:1.1fr 1fr;gap:70px;align-items:center}.feature-split.reverse{grid-template-columns:1fr 1.1fr}.feature-split>img{width:100%;aspect-ratio:1.3;object-fit:cover}.feature-split .body{padding:20px 0}.feature-split .body p{color:var(--muted)}.dark-section{background:var(--forest);color:var(--white)}.dark-section p{color:#d6dfd2}.dark-section .eyebrow{color:#dabca3}.dark-section .text-link{border-color:#c7ab89}.book-feature{display:grid;grid-template-columns:280px 1fr;gap:70px;align-items:center;max-width:1000px;margin:auto}.book-feature>img{box-shadow:14px 18px 25px #162a2733;width:100%;transform:rotate(-3deg)}.book-feature h2{font-size:clamp(2.3rem,5vw,4.1rem)}.book-feature p{max-width:570px}.quiet-note{font-size:.8rem;color:var(--muted);margin-top:18px}.spoil-status{display:flex;gap:8px;align-items:center;font-size:.7rem;color:var(--muted);padding:10px 0}.spoil-status button{border:0;background:transparent;color:var(--copper);text-decoration:underline;text-underline-offset:3px;padding:0;font-size:inherit}.footer{border-top:1px solid var(--line);padding:50px 0 24px}.footer-top{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:40px}.footer p{font-size:.86rem;color:var(--muted);max-width:330px}.footer nav{display:flex;flex-direction:column;gap:8px;font-size:.83rem}.footer nav strong{font-weight:600;margin-bottom:10px}.footer nav a{text-decoration:none}.footer nav a:hover{text-decoration:underline}.footer-bottom{display:flex;justify-content:space-between;gap:20px;font-size:.7rem;color:var(--muted);border-top:1px solid var(--line);margin-top:32px;padding-top:20px}.page-top{padding:34px 0 0}.breadcrumbs{display:flex;flex-wrap:wrap;gap:10px;align-items:center;font-size:.74rem;color:var(--muted);margin-bottom:36px}.breadcrumbs a{text-decoration:none}.breadcrumbs span:not(:last-child):after{content:'/';margin-left:10px;color:#a3a795}.index-head{padding:20px 0 48px}.index-head h1{font-size:clamp(3rem,6vw,5.3rem);margin-bottom:20px}.index-head .lede{max-width:780px}.collection{padding-bottom:80px}.collection-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:32px 26px}.entry-card{border:1px solid var(--line);background:var(--white);text-decoration:none;display:flex;flex-direction:column;overflow:hidden;border-radius:var(--radius)}.entry-card img{width:100%;aspect-ratio:1.65;object-fit:cover;transition:transform .25s}.entry-card:hover img{transform:scale(1.025)}.entry-card .card-copy{padding:24px;display:flex;flex-direction:column;flex:1}.entry-card .eyebrow{margin-bottom:12px}.entry-card h2{font-size:1.75rem;letter-spacing:-.025em;margin-bottom:15px}.entry-card p{font-size:.87rem;color:var(--muted)}.entry-card .arrow-line{margin-top:auto}.entry-card .portrait-image{aspect-ratio:1.2;object-position:50% 28%}.index-tools{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:30px;align-items:center}.filter-button{border:1px solid var(--line);border-radius:50px;background:transparent;padding:8px 18px;font-size:.8rem}.filter-button[aria-pressed=true]{background:var(--ink);border-color:var(--ink);color:var(--white)}.result-count{font-size:.8rem;color:var(--muted);margin-left:auto}.article-header{max-width:1100px;padding:15px 0 48px}.article-header h1{font-size:clamp(3rem,6vw,5.5rem)}.article-hero{max-height:540px;overflow:hidden;background:#e6e1d4}.article-hero img{width:100%;height:100%;max-height:540px;object-fit:cover}.article-hero.portrait img{max-height:540px;object-fit:contain;object-position:50% 20%}.article-layout{display:grid;grid-template-columns:220px minmax(0,1fr);gap:70px;padding-top:60px;padding-bottom:80px;align-items:start}.article-toc{position:sticky;top:30px;border-top:2px solid var(--copper);padding-top:18px;font-size:.8rem}.article-toc strong{display:block;margin-bottom:18px;font-size:.7rem;letter-spacing:.13em;text-transform:uppercase}.article-toc a{display:block;margin:0 0 12px;text-decoration:none;color:var(--muted)}.article-toc a:hover{color:var(--copper)}.article-body{min-width:0;max-width:880px}.article-body section+section{border-top:1px solid var(--line);padding-top:32px;margin-top:36px}.article-body h2{font-size:2.3rem;letter-spacing:-.035em}.article-body h3{font-family:var(--serif);font-size:1.55rem}.article-body p{max-width:74ch;line-height:1.85}.article-figure{margin:42px 0;background:#ece7db;border:1px solid var(--line)}.article-figure button{display:block;width:100%;padding:0;border:0;background:transparent}.article-figure img{width:100%;max-height:800px;object-fit:contain}.article-figure figcaption{padding:16px 20px;font-size:.78rem;color:var(--muted);border-top:1px solid var(--line)}.inline-figure{margin-top:28px}.chapter-ref{font-size:.8rem;color:var(--muted);border-left:2px solid var(--copper);padding-left:18px;margin-top:35px}.spoiler-gate{margin-top:36px;padding:30px;border:1px solid #d2c1a8;background:#efe8d9}.spoiler-gate h2{font-size:1.8rem}.spoiler-gate p{font-size:.9rem}.spoiler-content{border-left:2px solid var(--copper);padding-left:26px;margin-top:32px}.related{background:#ebe9de;padding:55px 0}.related h2{font-size:2.4rem}.related-links{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.related-links a{padding:20px;background:var(--paper);border:1px solid var(--line);text-decoration:none;font-size:.9rem}.related-links a span{display:block;font-size:.65rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);margin-bottom:7px}.author-hero{background:#172b29}.author-hero h1{max-width:800px}.author-feature{padding:75px 0}.author-quote{font-family:var(--serif);font-size:clamp(2rem,4vw,3.5rem);line-height:1.25;letter-spacing:-.03em;max-width:980px}.other-books{display:grid;grid-template-columns:1fr 1fr;gap:30px}.other-book{padding:35px;border:1px solid var(--line)}.other-book h3{font-family:var(--serif);font-size:2.1rem}.other-book p{color:var(--muted);font-size:.92rem}.author-bio{max-width:780px}.author-bio p{font-size:1.07rem}.gallery-grid{columns:3;column-gap:22px}.gallery-item{break-inside:avoid;margin:0 0 24px;border:1px solid var(--line);background:var(--white)}.gallery-item button{display:block;width:100%;background:transparent;border:0;padding:0;text-align:left}.gallery-item img{width:100%;height:auto}.gallery-item figcaption{padding:16px 18px;font-size:.83rem}.gallery-item small{display:block;color:var(--copper);font-size:.65rem;letter-spacing:.12em;text-transform:uppercase;margin-bottom:5px}.reference-list{display:grid;grid-template-columns:1fr 1fr;gap:0 50px}.reference-item{padding:23px 0;border-top:1px solid var(--line)}.reference-item dt{font-family:var(--serif);font-size:1.5rem;margin-bottom:10px}.reference-item dd{margin:0;font-size:.92rem;color:var(--muted)}.source-group{margin:40px 0}.source-group h2{font-size:2rem}.source-group li{margin-bottom:18px;font-size:.9rem}.alphabetical-list{columns:3;column-gap:35px}.alphabetical-list a{display:block;break-inside:avoid;padding:10px 0;border-bottom:1px solid var(--line);font-size:.9rem;text-decoration:none}.sample-body{max-width:730px;margin:0 auto;padding-bottom:80px;font-family:var(--serif);font-size:1.1rem;line-height:1.9}.sample-body h2{margin-top:70px;font-size:2.6rem}.sample-body p{text-indent:1.1em;margin-bottom:.75em}.sample-body h2+p{text-indent:0}.timeline-list{list-style:none;padding:0}.timeline-list li{border-left:1px solid var(--copper);padding:0 0 30px 25px}.timeline-list strong{display:block;font-size:.75rem;color:var(--copper);letter-spacing:.1em;margin-bottom:7px}.search-dialog,.spoiler-dialog,.image-dialog{border:1px solid var(--line);border-radius:5px;background:var(--white);color:var(--ink);box-shadow:0 20px 90px #0d241b55;padding:0;max-height:85vh}.search-dialog::backdrop,.spoiler-dialog::backdrop,.image-dialog::backdrop{background:#122a25b8;backdrop-filter:blur(3px)}.search-dialog{width:min(760px,calc(100% - 32px));margin:8vh auto auto}.dialog-head{padding:24px 28px 18px;display:flex;justify-content:space-between;align-items:center;gap:20px}.dialog-head h2{font-size:1.6rem;letter-spacing:-.02em;margin:0}.close-button{border:1px solid var(--line);background:transparent;border-radius:50%;width:36px;height:36px;font-size:1.3rem;line-height:1;flex-shrink:0}.search-field{padding:0 28px 20px}.search-field label{font-size:.8rem;display:block;margin-bottom:8px}.search-field input{width:100%;padding:13px;background:var(--paper);border:1px solid var(--line);border-radius:2px}.search-help{font-size:.75rem;color:var(--muted);margin-top:12px;margin-bottom:0}.search-results{padding:0 28px 25px;max-height:50vh;overflow:auto}.search-result{display:block;padding:17px 0;border-top:1px solid var(--line);text-decoration:none}.search-result strong{font-family:var(--serif);font-size:1.3rem;font-weight:400}.search-result small{display:block;color:var(--copper);font-size:.65rem;letter-spacing:.1em;text-transform:uppercase}.search-result p{font-size:.83rem;margin:6px 0 0;color:var(--muted)}.spoiler-dialog{width:min(560px,calc(100% - 32px));padding:30px}.spoiler-dialog h2{font-size:2.2rem}.spoiler-dialog p{color:var(--muted);font-size:.95rem}.image-dialog{width:min(1450px,calc(100% - 30px));max-height:95vh}.image-dialog .zoom-image{width:100%;height:calc(87vh - 95px);object-fit:contain;background:#eae7dd}.image-caption{padding:14px 25px;font-size:.8rem;margin:0}.image-dialog .dialog-head{padding:14px 20px}.image-dialog .dialog-head h2{font-family:var(--sans);font-size:.9rem;font-weight:500}.empty-results{padding:20px 0;color:var(--muted);font-size:.9rem}.notice-box{border:1px solid var(--line);padding:25px;margin-top:30px}.notice-box p:last-child{margin:0}.not-found{padding:110px 0 150px}.anchor-target{scroll-margin-top:25px}.section .wide-board{width:100%;margin-top:30px;border:1px solid var(--line)}
@media(min-width:1600px){.hero{min-height:730px}}
@media(max-width:1100px){.container{width:calc(100% - 64px)}.nav{gap:16px}.nav a{font-size:.75rem}.topbar-inner{gap:18px}.brand{font-size:.95rem}.home-intro{gap:40px}.feature-split{gap:40px}.article-layout{gap:40px;grid-template-columns:180px minmax(0,1fr)}.book-feature{gap:45px;grid-template-columns:230px 1fr}.hero{min-height:610px}}
@media(max-width:850px){.nav{display:none;position:absolute;top:83px;left:0;right:0;background:var(--paper);padding:22px 32px;border-bottom:1px solid var(--line);flex-wrap:wrap;gap:20px}.nav.is-open{display:flex}.menu-button{display:inline-flex;margin-left:auto}.topbar,.topbar-inner{min-height:84px}.search-trigger .label{display:none}.collection-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.editorial-grid{grid-template-columns:1fr 1fr}.editorial-card:first-child{grid-column:1/-1}.editorial-card:first-child img{height:350px}.editorial-card img{height:220px}.section-head{align-items:flex-start;flex-direction:column;gap:20px}.feature-split,.feature-split.reverse{grid-template-columns:1fr;gap:28px}.feature-split>img{max-height:430px}.feature-split.reverse .body{order:2}.home-intro{grid-template-columns:1fr;gap:12px}.article-layout{grid-template-columns:1fr;gap:35px}.article-toc{position:static;display:flex;gap:10px 20px;flex-wrap:wrap}.article-toc strong{width:100%;margin-bottom:5px}.article-toc a{margin-bottom:0}.gallery-grid{columns:2}.related-links{grid-template-columns:repeat(2,1fr)}.alphabetical-list{columns:2}.footer-top{grid-template-columns:1.2fr 1fr;gap:30px}.footer-top>div:first-child{grid-column:1/-1}.book-feature{grid-template-columns:200px 1fr;gap:35px}.civic-strip{gap:18px;font-size:.6rem}}
@media(max-width:540px){.container{width:calc(100% - 36px)}.topbar-inner{gap:10px}.brand{font-size:.85rem}.brand span{font-size:.52rem;letter-spacing:.1em}.menu-button{font-size:.72rem;padding:8px}.search-trigger{padding:8px}.hero{min-height:610px}.hero-content{padding:65px 0 55px}.hero h1{font-size:3.2rem;letter-spacing:-.05em}.hero:after{background:linear-gradient(0deg,#102a25f2,#16332a4d)}.hero>img{object-position:63% 50%}.hero .lede{font-size:.96rem}.hero-credit{right:18px;bottom:16px;font-size:.5rem}.section{padding-top:55px;padding-bottom:55px}.section-head{margin-bottom:28px}.civic-strip{flex-wrap:wrap;justify-content:flex-start;gap:6px 18px}.civic-strip span:last-child{width:100%}.editorial-grid{grid-template-columns:1fr}.editorial-card:first-child{grid-column:auto}.editorial-card:first-child img,.editorial-card img{height:230px}.service-grid{grid-template-columns:1fr 1fr}.service-card{padding:19px;min-height:185px}.service-card h3{font-size:1.4rem}.service-card p{font-size:.78rem;padding-right:0}.service-card:after{bottom:12px;right:16px}.service-code{font-size:.64rem}.collection-grid{grid-template-columns:1fr;gap:24px}.entry-card img{aspect-ratio:1.8}.entry-card .portrait-image{aspect-ratio:1.3}.index-head{padding-bottom:30px}.page-top{padding-top:22px}.breadcrumbs{font-size:.66rem;margin-bottom:25px}.index-head h1,.article-header h1{font-size:2.8rem;overflow-wrap:anywhere}.lede{font-size:1rem}.book-feature{grid-template-columns:1fr;gap:40px}.book-feature>img{max-width:190px;margin:auto}.book-feature h2{font-size:2.6rem}.other-books{grid-template-columns:1fr}.other-book{padding:25px}.article-header{padding-bottom:30px}.article-layout{padding-top:30px;padding-bottom:50px}.article-body h2{font-size:1.95rem}.article-body p{line-height:1.8;font-size:.95rem}.article-toc{font-size:.74rem;gap:8px 15px}.article-figure{margin:28px -1px}.article-figure figcaption{font-size:.72rem;padding:12px}.related-links{grid-template-columns:1fr}.gallery-grid{columns:1}.reference-list{grid-template-columns:1fr}.alphabetical-list{columns:1}.footer-top{grid-template-columns:1fr 1fr;gap:20px}.footer-bottom{flex-direction:column;gap:8px}.actions{gap:10px}.button{font-size:.78rem;padding:12px 16px}.spoiler-gate{padding:22px}.search-dialog{margin-top:4vh}.dialog-head{padding:20px}.search-field{padding:0 20px 15px}.search-results{padding:0 20px 20px}.result-count{margin-left:0;width:100%}.sample-body{font-size:1.03rem}.sample-body h2{font-size:2.1rem}.image-dialog .zoom-image{height:70vh}.nav{padding:22px 18px}}
/* Author direction: retain the established dark Concord/BTC Mindset palette. */
:root{color-scheme:dark;--paper:#080f15;--white:#f4ebdd;--ink:#f4ebdd;--muted:#b4b8b6;--copper:#dba06e;--line:#364149;--blue:#7cc5e8;--forest:#142a30;--surface:#101a21;--surface-soft:#17242d}
button,input,select{color:inherit}.topbar,.nav{background:var(--paper)}.button{background:var(--copper);border-color:var(--copper);color:#080f15}.button:hover{background:#ecc09b;border-color:#ecc09b;color:#080f15}.button.secondary{background:transparent;color:var(--ink);border-color:var(--line)}.button.secondary:hover{background:var(--surface-soft);color:var(--ink);border-color:var(--copper)}.button.light{background:#f4ebdd;border-color:#f4ebdd;color:#080f15}.button.outline-light{background:transparent;border-color:#d3d9ce8c;color:#f4ebdd}.button.outline-light:hover{background:#f4ebdd;color:#080f15}.service-band,.related,.entry-card{background:var(--surface)}.service-grid{border-color:var(--line)}.service-card{border-color:var(--line);border-top:3px solid var(--accent)}.service-card:hover{background:var(--surface-soft)}.service-code{color:var(--ink)}.service-card:after{color:var(--copper)}.article-hero{background:var(--surface)}.article-figure{background:var(--surface);border-color:var(--line)}.article-figure figcaption{background:var(--surface)}.dark-section{background:#101e26}.dark-section p{color:var(--muted)}.gallery-item{background:var(--surface)}.search-dialog,.spoiler-dialog,.image-dialog{background:var(--surface);color:var(--ink)}.search-field input{background:var(--paper);color:var(--ink)}.filter-button[aria-pressed=true]{background:var(--copper);border-color:var(--copper);color:#080f15}.spoiler-gate{background:#17232c;border-color:#675241}.image-dialog .zoom-image{background:#101a21}.skip{background:var(--ink);color:var(--paper)}.icon-button:hover,.close-button:hover{background:var(--surface-soft)}.book-feature>img{box-shadow:14px 18px 30px #0007}a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible{outline-color:var(--blue)}
/* Reader-flow refresh: complete navigation, touch targets and compact article tools. */
.topbar{position:sticky;top:0;z-index:25}.nav{gap:17px}.nav a,.more-nav summary{min-height:44px;display:flex;align-items:center}.nav-book-link{color:var(--copper);white-space:nowrap}.more-nav{position:relative;font-size:.8rem}.more-nav summary{cursor:pointer;list-style:none;gap:6px}.more-nav summary:after{content:'⌄';color:var(--copper)}.more-nav summary::-webkit-details-marker{display:none}.more-nav-panel{position:absolute;right:0;top:100%;width:250px;background:var(--surface);border:1px solid var(--line);padding:10px 16px;box-shadow:0 15px 30px #0006;border-radius:3px}.more-nav-panel a{font-size:.82rem;padding:5px 8px}.reader-actions{border-bottom:1px solid var(--line);background:var(--surface)}.reader-actions>.container{display:flex;justify-content:space-between;gap:10px 25px;flex-wrap:wrap;padding-top:12px;padding-bottom:12px}.reader-actions a{font-size:.8rem;color:var(--copper);min-height:44px;display:flex;align-items:center;text-decoration:none}.reader-actions a:hover{text-decoration:underline}.legacy-anchor{display:block;height:0;scroll-margin-top:12px}.article-toc{top:120px}.article-toc details{width:100%}.article-toc summary{font-size:.72rem;letter-spacing:.12em;text-transform:uppercase;font-weight:650;cursor:pointer;min-height:44px;display:list-item;margin-bottom:8px}.article-toc details>div{padding-top:6px}.article-toc a{min-height:35px}.guide-paths{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}.guide-paths h2{font-size:2rem;letter-spacing:-.025em}.guide-paths ul{padding-left:20px;margin:20px 0 0}.guide-paths li{padding:7px 0;font-size:.87rem}.reader-questions{max-width:900px}.reader-question{border-top:1px solid var(--line);padding:8px 0}.reader-question summary{cursor:pointer;font-size:1rem;padding:16px 0;font-weight:500;min-height:48px}.reader-question p{color:var(--muted);padding:0 22px;max-width:75ch}.image-controls{display:flex;align-items:center;justify-content:space-between;padding:12px 24px 18px;gap:14px;border-top:1px solid var(--line)}.image-controls button{min-height:44px}.image-controls span{font-size:.78rem;color:var(--muted)}.image-dialog .zoom-image{height:64vh;max-height:760px}.icon-button:disabled{opacity:.4;cursor:default}
@media(max-width:1100px){.topbar,.topbar-inner{min-height:84px}.nav{display:none;position:absolute;top:83px;left:0;right:0;background:var(--paper);padding:18px 32px;border-bottom:1px solid var(--line);flex-direction:column;align-items:stretch;gap:4px;max-height:calc(100dvh - 100px);overflow-y:auto}.nav.is-open{display:flex}.nav a{font-size:.9rem}.menu-button{display:inline-flex;margin-left:auto}.more-nav{width:100%}.more-nav summary{font-size:.9rem}.more-nav-panel{position:static;width:100%;box-shadow:none;padding:5px 12px;border-left:2px solid var(--copper);border-right:0;border-top:0;border-bottom:0}.more-nav-panel a{min-height:44px}}
@media(max-width:850px){.article-toc{display:block}.article-toc details{background:var(--surface);border:1px solid var(--line);padding:10px 18px}.article-toc a{padding:8px 0;min-height:44px}.guide-paths{grid-template-columns:1fr}.guide-paths .other-book{padding:25px}.guide-paths h2{font-size:2rem}.reader-actions>.container{gap:0 22px}.reader-actions a:first-child{width:100%}}
@media(max-width:540px){.nav{padding:18px}.menu-button,.search-trigger{min-width:44px;min-height:44px}.image-controls{padding:10px 14px;gap:8px}.image-dialog .zoom-image{height:58vh}.image-caption{padding:12px 16px}.footer nav a{min-height:40px;display:flex;align-items:center}.reader-actions a{font-size:.75rem}}
@media(max-width:360px){.service-grid{grid-template-columns:minmax(0,1fr)}.service-card{min-height:150px}.hero h1{font-size:2.8rem}}
@media(max-width:360px){.topbar .brand{min-width:0;font-size:.9rem}.topbar .brand span{display:none}.topbar-inner{gap:8px}.topbar .menu-button{margin-left:auto;flex-shrink:0}.topbar .search-trigger{flex-shrink:0}}
.entry-card img.reference-image{object-fit:contain;background:#aea59b}
.book-intro .catalog-cover{width:auto;max-width:100%;height:240px;object-fit:contain;align-self:center;margin-bottom:28px;box-shadow:8px 12px 20px #0006}.btc-hero-split{display:grid;grid-template-columns:1.2fr 1fr;gap:54px;align-items:center}.series-cover-pair{display:grid;grid-template-columns:1fr 1fr;gap:20px;align-items:center}.series-cover-pair img{width:100%;height:auto;box-shadow:12px 18px 30px #0008;transform:rotate(-4deg)}.series-cover-pair img+img{transform:rotate(5deg);margin-top:45px}.btc-site .btc-series-hero h1{font-size:clamp(2.7rem,4.3vw,4.5rem)}.btc-companion .feature-split>img{object-fit:contain;height:auto;min-height:0}.book-intro .book-number{font-size:2rem;margin-bottom:10px}.btc-site{--copper:#d6b777}
@media(max-width:850px){.btc-hero-split{grid-template-columns:1fr;gap:35px}.series-cover-pair{max-width:460px;margin:auto}.book-intro .catalog-cover{height:260px}}
.books-trilogy{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;margin:36px 0}.book-intro{background:var(--surface);border:1px solid var(--line);padding:32px;display:flex;flex-direction:column;align-items:flex-start}.book-number{font-family:Georgia,serif;font-size:3.5rem;color:var(--copper);line-height:1;margin-bottom:24px}.book-intro h3{font-family:Georgia,serif;font-size:2rem;line-height:1.15}.book-intro p:not(.eyebrow){color:var(--muted)}.book-intro .text-link{margin-top:auto;min-height:44px;display:flex;align-items:center}.author-profile{display:grid;grid-template-columns:minmax(220px,340px) minmax(0,1fr);gap:64px;align-items:start}.author-profile>img{width:100%;height:auto}.btc-series-hero{padding:120px 0 100px;background:radial-gradient(ellipse at 80% 0,#50311d 0,transparent 65%),#080f15;border-bottom:1px solid var(--line)}.btc-series-hero h1{font-family:Georgia,serif;font-size:clamp(2.8rem,5.8vw,5.5rem);line-height:1.02;letter-spacing:-.04em;max-width:1100px}.btc-series-hero .lede{max-width:700px}.gallery-item[data-gallery-category*="transport"] img{object-fit:contain;background:#10171c}
@media(max-width:850px){.books-trilogy{grid-template-columns:1fr}.book-intro{padding:26px}.book-number{font-size:2.5rem}.author-profile{grid-template-columns:1fr;gap:32px}.author-profile>img{max-width:340px}.btc-series-hero{padding:70px 0 60px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important;animation:none!important}}
@media print{.topbar,.footer,.article-toc,.spoil-status,.related,.actions,.spoiler-gate{display:none}body{background:white;color:black}.container{width:100%}.article-layout{display:block}.article-header h1{font-size:36pt}.article-hero{max-height:200px}.article-hero img{max-height:200px;object-fit:contain}.article-body{max-width:none}a{color:inherit}.article-figure{break-inside:avoid}dialog{display:none}}