:root{--ink:#223834;--muted:#65756e;--green:#19483f;--green2:#2f6759;--paper:#f9f7f1;--line:#dce2da;--cream:#efe9dc;--gold:#c69b60;--link:#186351;font-family:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:var(--paper);font-synthesis:none}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0}a{color:var(--link);text-underline-offset:3px}a:hover{color:#0c4538}button,input{font:inherit}.shell{width:min(1160px,calc(100% - 44px));margin:auto}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}.skip{position:absolute;left:-9999px;top:10px;z-index:100;background:white;padding:12px}.skip:focus{left:15px}.top{background:#fff;border-bottom:1px solid var(--line)}.top-inner{display:flex;align-items:center;gap:24px;justify-content:space-between;min-height:88px}.brand{display:flex;align-items:center;gap:11px;font-size:19px;font-weight:850;letter-spacing:-.06em;text-decoration:none;color:var(--green);white-space:nowrap}.brand span em{color:#9c7745;font-weight:500;font-style:normal;letter-spacing:-.02em}.top nav{display:flex;align-items:center;gap:30px}.top nav a{font-size:14px;font-weight:650;text-decoration:none;color:#43534c}.header-search{font-weight:650;font-size:14px;text-decoration:none;border:1px solid var(--line);padding:11px 18px;border-radius:9px;white-space:nowrap}.preview-strip{text-align:center;background:#eee8dc;color:#795b32;padding:10px;font-size:12px;font-weight:750;letter-spacing:.035em}.eyebrow{display:block;font-size:11px;font-weight:800;color:#477469;letter-spacing:.18em;text-transform:uppercase}.home-hero{display:grid;grid-template-columns:1.2fr .8fr;gap:30px;align-items:center;padding:93px 0 75px;min-height:560px}.hero-copy h1{font-family:Georgia,serif;font-weight:500;font-size:clamp(45px,5.3vw,77px);letter-spacing:-.065em;line-height:1.05;margin:20px 0 20px;max-width:780px}.hero-copy h1 em{display:block;color:#9d7848;font-weight:400}.hero-copy p{font-size:18px;line-height:1.72;color:#63736e;max-width:660px;margin:0 0 28px}.hero-search{display:flex;width:min(560px,100%);background:white;border:1px solid #c9d5cc;box-shadow:0 9px 20px rgba(13,45,35,.05);padding:7px;border-radius:12px}.hero-search input{flex:1;min-width:0;outline:none;border:0;padding:12px 13px;background:transparent;font-size:14px;color:var(--ink)}.hero-search button,.search-page-form button{border:0;border-radius:8px;background:var(--green);color:white;padding:12px 20px;font-weight:750;cursor:pointer}.hero-copy>small{display:block;color:var(--muted);margin-top:20px;font-size:12px}.hero-art{aspect-ratio:1;max-width:420px;display:flex;align-items:center;justify-content:center;flex-direction:column;position:relative;margin:auto;background:radial-gradient(circle at 50% 48%,#eee9dc,#f8f6ef 68%);border-radius:50%}.hero-art svg{width:100%;height:100%}.art-top,.art-bottom{position:absolute;font-weight:750;font-size:11px;letter-spacing:.23em;color:#5f8172}.art-top{top:11%}.art-bottom{bottom:10%}.section{padding:45px 0 62px}.section-heading{display:flex;justify-content:space-between;align-items:end;gap:25px;margin:0 0 24px}.section-heading h2,.banner h2,.simple-hero h1{font-family:Georgia,serif;font-weight:500;letter-spacing:-.045em}.section-heading h2{font-size:43px;margin:9px 0 0}.section-heading>a{font-size:14px;font-weight:700;text-decoration:none}.card-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:15px;padding-bottom:35px}.article-tile{display:flex;flex-direction:column;min-height:255px;border:1px solid #d9e2d8;background:#fff;border-radius:12px;padding:23px;color:var(--ink);text-decoration:none;transition:transform .15s,box-shadow .15s,border-color .15s}.article-tile:hover{transform:translateY(-3px);box-shadow:0 10px 24px #17463814;border-color:#91ad9c}.article-tile small{font-size:11px;font-weight:750;text-transform:uppercase;letter-spacing:.08em;color:#679080}.article-tile strong{font-family:Georgia,serif;font-weight:550;line-height:1.2;font-size:24px;letter-spacing:-.035em;margin-top:20px}.article-tile p{font-size:13px;line-height:1.6;color:var(--muted);flex:1}.article-tile span{color:#2b7660;font-weight:700;font-size:12px}
/* Homepage-only illustrated cards. The media region fills precisely the top
   two thirds, while a soft duplicate behind the photo avoids cropping
   long streetcar photographs or portrait-format archival program covers. */
.card-grid.featured-grid{grid-template-columns:repeat(auto-fit,minmax(min(100%,260px),1fr));gap:18px}
.featured-grid .featured-tile{height:570px;min-height:0;padding:0;display:grid;grid-template-rows:minmax(0,2fr) minmax(0,1fr);overflow:hidden}
.featured-tile .featured-media{position:relative;min-width:0;min-height:0;overflow:hidden;background:#e7e7df;isolation:isolate}
.featured-tile .featured-media-backdrop{position:absolute;inset:-22px;width:calc(100% + 44px);height:calc(100% + 44px);object-fit:cover;filter:blur(18px) brightness(.74) saturate(.82);pointer-events:none}
.featured-tile .featured-media-primary{position:absolute;inset:0;display:block;width:100%;height:100%;box-sizing:border-box;padding:10px;object-fit:contain;object-position:center;filter:drop-shadow(0 2px 5px rgba(0,0,0,.15))}
.featured-tile .featured-media-empty{display:grid;place-items:center;background:linear-gradient(135deg,#e8e9df,#c8d9cb)}
.featured-tile .featured-media-emblem{font-family:Georgia,serif;font-size:88px;font-weight:500;color:#537568}
.featured-tile .featured-tile-copy{min-height:0;display:flex;flex-direction:column;gap:6px;padding:14px 17px 16px}
.featured-tile .featured-tile-copy small{font-size:10px}
.featured-tile .featured-tile-copy strong{font-size:21px;line-height:1.14;margin:0;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.featured-tile .featured-tile-copy p{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;font-size:12px;line-height:1.45;margin:0;flex:0 1 auto}
.featured-tile .featured-tile-copy span{margin-top:auto}
@media(max-width:480px){.featured-grid .featured-tile{height:530px}.featured-tile .featured-tile-copy strong{font-size:22px}}
.topic-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.topic-tile{position:relative;display:grid;grid-template-columns:50px 1fr;gap:0 14px;align-items:center;background:#f0eee7;border:1px solid #e1e1d9;border-radius:12px;padding:25px;color:var(--ink);text-decoration:none}.topic-icon{grid-row:span 2;border-radius:50%;width:48px;height:48px;display:grid;place-items:center;background:#dce8df;color:#2b6652;font-family:Georgia,serif;font-size:25px}.topic-tile strong{font-size:16px}.topic-tile small{color:var(--muted)}.topic-tile b{position:absolute;right:17px;top:17px;color:#779a8c}.banner{background:var(--green);color:#f9f7ed;border-radius:16px;padding:52px 60px;margin:25px 0 80px}.banner .eyebrow{color:#d4b17b}.banner h2{font-size:46px;line-height:1.1;margin:20px 0}.banner p{line-height:1.65;max-width:650px;color:#cfe3da}.banner a{color:#f8deb5;font-weight:700}.footer{background:#163e37;color:#dcebe1;padding:46px 0 26px;margin-top:90px}.footer-grid{display:grid;grid-template-columns:2fr 1fr 1.5fr;gap:30px}.footer p{font-size:13px;line-height:1.55;color:#b5cec1;max-width:350px}.footer a{display:block;margin:0 0 10px;color:#ebf5ed;font-size:13px}.footer strong{color:#fff;letter-spacing:.1em;font-size:14px}.breadcrumbs{display:flex;gap:10px;align-items:center;font-size:12px;color:#839087;flex-wrap:wrap;margin:30px 0 -15px}.breadcrumbs a{text-decoration:none}.simple-hero{padding:75px 0 38px;max-width:850px}.simple-hero h1{font-size:clamp(48px,5vw,72px);line-height:1.08;margin:14px 0}.simple-hero p{font-size:18px;line-height:1.6;color:var(--muted);max-width:760px}.listing-title{font-size:12px;font-weight:750;color:var(--muted);padding-bottom:18px}.topic-list{max-width:850px;margin-bottom:60px}.topic-row{display:flex;align-items:center;gap:18px;padding:18px;border-bottom:1px solid var(--line);color:var(--ink);text-decoration:none}.topic-row>span:nth-child(2){display:grid;gap:5px;flex:1}.topic-row small{font-size:13px;color:var(--muted)}.topic-row>b{color:#578776;font-size:13px}.empty{padding:45px 30px;background:white;border:1px solid var(--line);border-radius:14px}.timeline{position:relative;max-width:850px;border-left:2px solid #bbd0be;margin:10px 0 80px 126px}.timeline-row{display:grid;grid-template-columns:120px 1fr;gap:24px;position:relative;margin:0 0 32px;padding:5px 20px}.timeline-row:before{content:"";position:absolute;width:11px;height:11px;background:#749881;border:3px solid var(--paper);border-radius:50%;top:10px;left:-8px}.timeline-row time{font-family:Georgia,serif;color:#876a41;font-size:16px;position:relative;left:-150px;white-space:nowrap}.timeline-row>div{margin-left:-125px;transform:translateX(125px);background:white;padding:18px;border:1px solid var(--line);border-radius:10px}.timeline-row strong{font-size:16px}.timeline-row p{margin-bottom:0;font-size:13px}.source-list{max-width:900px}.source-row{padding:20px 0;border-bottom:1px solid var(--line)}.source-row small{font-size:11px;letter-spacing:.1em;color:#779184;text-transform:uppercase}.source-row h2{margin:9px 0;font-size:20px}.source-row p{font-size:13px;color:var(--muted)}.prose-wide{max-width:790px;margin-bottom:90px;font-size:16px;line-height:1.75}.prose-wide h2{font-family:Georgia,serif;font-size:29px;letter-spacing:-.03em;margin-top:40px}.search-page-form{display:flex;gap:8px;max-width:830px}.search-page-form input{width:100%;min-width:0;padding:17px 18px;border:1px solid #cbd7d0;border-radius:10px;background:white}.search-status{font-size:14px;color:var(--muted);padding:15px 0}.search-results{display:grid;gap:12px;max-width:830px}.search-hit{display:grid;gap:10px;text-decoration:none;color:var(--ink);padding:22px;border:1px solid var(--line);border-radius:10px;background:white}.search-hit small{color:#679080}.search-hit strong{font-family:Georgia,serif;font-size:24px}.search-hit p{color:var(--muted);margin:0}.article-heading{padding:75px 0 45px;border-bottom:1px solid var(--line);max-width:900px}.article-heading h1{font-family:Georgia,serif;font-weight:500;font-size:clamp(49px,6vw,78px);letter-spacing:-.065em;line-height:1.07;margin:15px 0}.article-heading>p{font-size:19px;line-height:1.6;color:var(--muted);max-width:830px}.article-state{display:flex;gap:16px;align-items:center;color:#839187;font-size:12px;margin-top:20px}.article-state span:first-child{border:1px solid #bacdbf;border-radius:24px;padding:8px 12px;color:#44745f;font-weight:700;background:#edf4ed}.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 290px;gap:58px;align-items:start;padding:45px 0 60px}.article-main{font-size:16px;line-height:1.8;min-width:0}.article-main>p{margin:0 0 25px}.article-main h2{font-family:Georgia,serif;font-size:29px;font-weight:500;letter-spacing:-.025em;margin:46px 0 16px;border-bottom:1px solid var(--line);padding-bottom:11px;scroll-margin-top:20px}.article-main h3{font-size:19px}.article-main sup{font-size:11px;white-space:nowrap}.article-main sup a{text-decoration:none}.article-main ul{padding-left:25px}.route-study{margin:36px 0 42px;padding:24px;border:1px solid #cbd7cb;border-radius:14px;background:#fdfdf9}.route-study-heading h3{font-family:Georgia,serif;font-size:29px;line-height:1.15;margin:8px 0 10px;color:#263d33}.route-study-heading p{margin:0 0 14px;font-size:14px;line-height:1.7;color:#596d5f}.route-diagram-scroll{overflow-x:auto;max-width:100%;border-radius:12px;outline-offset:3px}.route-diagram-scroll img{display:block;width:100%;min-width:770px;height:auto}.route-full-size-link{margin:8px 0;font-size:12px}.route-full-size-link a{color:#376a54;text-decoration:underline;text-underline-offset:2px}.route-source-note,.route-map-links{font-size:12px;line-height:1.65;color:#627268}.route-source-note a,.route-map-links a,.route-compare a{color:#376a54;text-decoration:underline;text-underline-offset:2px}.route-compare{display:grid;gap:8px;margin:20px 0}.route-compare details{border:1px solid #d9e2d7;border-radius:9px;background:#fff}.route-compare details[open]{border-color:#9ab8a5}.route-compare summary{display:flex;align-items:center;justify-content:space-between;gap:12px;cursor:pointer;padding:12px 14px;font-size:13px;line-height:1.4}.route-compare summary:hover{background:#f2f6f2}.route-compare details>p{margin:0 15px 13px;font-size:13px;line-height:1.7}.route-confidence{flex-shrink:0;background:#f3e9dc;color:#805b33;border-radius:20px;font-size:10px;padding:4px 8px;text-align:center}.route-confidence-evidence{background:#e1eee5;color:#326449}@media(max-width:740px){.route-study{padding:16px}.route-study-heading h3{font-size:23px}.route-compare summary{align-items:flex-start;flex-direction:column}.route-diagram-scroll img{min-width:770px}} 
.article-sidebar{display:grid;gap:20px;position:sticky;top:20px}.infobox{border:1px solid #d3dcd4;background:white;border-radius:12px;overflow:hidden}.infobox-head{text-align:center;background:#e8f0e8;padding:22px 18px 15px}.infobox-head h2{font-family:Georgia,serif;font-weight:500;font-size:22px;margin:12px 0 4px}.infobox-head small{color:#6e897a;font-size:11px}.letter-box{width:45px;height:45px;display:grid;place-items:center;border:2px solid #99bba3;color:#5b8873;border-radius:50%;margin:auto;font-family:Georgia,serif;font-size:28px}.infobox-photo{margin:0;background:#f7f7f3}.infobox-photo-trigger{display:block;width:100%;padding:12px 12px 4px;border:0;background:transparent;color:#4d6a5b;cursor:zoom-in;font:inherit;text-align:center}.infobox-photo-trigger img{display:block;width:100%;height:180px;max-width:100%;object-fit:contain;object-position:center;margin:0 auto}.infobox-photo-trigger .photo-zoom-label{display:block;margin-top:8px}.infobox-photo-trigger .photo-zoom-label{font-size:11px;font-weight:700}.infobox-photo-trigger:focus-visible{outline:3px solid #44745f;outline-offset:-4px}.infobox-photo figcaption{padding:10px 14px;font-size:11px;line-height:1.5;color:#5d6d63}.infobox-photo figcaption a{color:#375e4b}.photo-lightbox{position:fixed;width:min(92vw,1000px);max-width:92vw;max-height:92vh;padding:14px 18px 18px;border:0;border-radius:12px;background:#fff;color:#253b32;box-shadow:0 20px 80px rgba(0,0,0,.35);overflow:auto}.photo-lightbox::backdrop{background:rgba(13,28,24,.85)}.photo-lightbox-close{display:block;margin-left:auto;border:1px solid #d0d8d1;border-radius:8px;background:#f6f8f6;color:#20372c;cursor:pointer;font-size:24px;line-height:1;padding:7px 12px}.photo-lightbox-close:focus-visible{outline:3px solid #44745f;outline-offset:2px}.photo-lightbox figure{margin:8px 0 0;text-align:center}.photo-lightbox figure img{display:block;width:auto;max-width:100%;height:auto;max-height:75vh;margin:0 auto;object-fit:contain}.photo-lightbox figcaption{margin-top:12px;font-size:12px;line-height:1.55;color:#53695d}.photo-lightbox figcaption a{color:#275d45}
.photo-placeholder{background:repeating-linear-gradient(45deg,#f0f0e9,#f0f0e9 8px,#eeeee6 8px,#eeeee6 16px);padding:35px 18px;text-align:center;font-size:12px;line-height:1.6;color:#7d867c}.infobox dl{margin:0;padding:12px 20px 22px}.infobox dl div{border-bottom:1px solid #e9ede7;display:grid;grid-template-columns:85px 1fr;gap:8px;padding:11px 0;font-size:12px}.infobox dt{font-weight:750;color:#667969}.infobox dd{margin:0;color:#3e5149}.toc{border:1px solid var(--line);border-radius:10px;padding:18px 22px;background:#f4f3ed;font-size:13px}.toc strong{font-size:12px;text-transform:uppercase;letter-spacing:.07em}.toc nav{display:grid;gap:12px;margin-top:14px}.toc a{text-decoration:none}.refs ol{padding:0;list-style:none}.refs li{display:flex;align-items:baseline;gap:12px;font-size:13px;color:#62756a;margin-bottom:11px;line-height:1.6;overflow-wrap:anywhere}.refs li span{color:#997044}.related-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.related-grid .article-tile{min-height:190px}.editorial-note{border-left:3px solid #c29b65;background:#f0ebdf;padding:16px 22px;margin-top:30px;font-size:12px;color:#6d654f}.not-found{padding:15vh 0;min-height:50vh}
@media(max-width:1000px){.top-inner{gap:15px}.top nav{gap:15px}.brand{font-size:17px}.card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.article-layout{gap:28px}.home-hero{min-height:520px}}
@media(max-width:740px){.shell{width:min(100% - 30px,1160px)}.top-inner{flex-wrap:wrap;padding:14px 0;min-height:0}.top nav{order:3;width:100%;justify-content:space-between;gap:10px}.top nav a{font-size:13px}.header-search{margin-left:auto}.home-hero{grid-template-columns:1fr;padding:55px 0 28px;gap:18px}.hero-art{height:290px;width:290px}.hero-copy h1{font-size:clamp(44px,8vw,65px)}.hero-copy p{font-size:16px}.section{padding:32px 0}.section-heading h2{font-size:34px}.topic-grid{grid-template-columns:repeat(2,1fr)}.banner{padding:35px 28px}.banner h2{font-size:37px}.footer-grid{grid-template-columns:1fr 1fr}.article-layout{grid-template-columns:1fr}.article-sidebar{position:static;grid-row:1}.toc{display:none}.article-heading{padding:49px 0 30px}.article-main h2{margin-top:30px}.infobox dl{display:grid;grid-template-columns:repeat(2,1fr);gap:0 20px}.timeline{margin-left:18px}.timeline-row{grid-template-columns:1fr}.timeline-row time{left:0}.timeline-row>div{margin-left:0;transform:none}.breadcrumbs{margin-bottom:0}}
@media(max-width:480px){.card-grid,.topic-grid{grid-template-columns:1fr}.article-tile{min-height:205px}.hero-search button{padding:11px}.topic-tile{padding:20px}.section-heading{align-items:start;flex-direction:column;gap:12px}.footer-grid{grid-template-columns:1fr}.infobox dl{grid-template-columns:1fr}.article-state{flex-wrap:wrap}.related-grid{grid-template-columns:1fr}}