*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font:16px Segoe UI,Arial;color:#243b53}header{height:76px;padding:0 6vw;display:flex;align-items:center;position:sticky;top:0;background:#fff;z-index:5;border-bottom:1px solid #ddd}header b{color:#063b66;font-size:22px}header span{font-size:13px;margin-left:8px}nav{margin-left:auto;display:flex;gap:18px;align-items:center}nav a{text-decoration:none;color:#334e68;font-size:13px;font-weight:700}.hero{min-height:570px;display:flex;align-items:center;background:linear-gradient(120deg,#052f4f,#0b5482);color:#fff;padding:7vw}.hero div{max-width:760px}.hero h1{font-size:clamp(52px,8vw,92px);line-height:.92;margin:14px 0 25px}.hero p{font-size:20px;line-height:1.6;color:#d9e2ec;margin-bottom:30px}.gold,.blue,.outline{display:inline-block;padding:11px 17px;border-radius:7px;text-decoration:none;font-weight:800}.gold{background:#f6b51b;color:#102a43!important}.blue{background:#063b66;color:white}.outline{border:1px solid #fff;color:#fff}.stats{max-width:1120px;margin:-35px auto 0;position:relative;background:#fff;display:grid;grid-template-columns:repeat(4,1fr);box-shadow:0 15px 40px #0002;border-radius:12px}.stats div{padding:25px;border-right:1px solid #ddd}.stats b{display:block;font-size:32px;color:#063b66}section:not(.hero){padding:85px max(7vw,calc((100vw - 1120px)/2))}section small{color:#c88400;font-weight:900;letter-spacing:.15em}h2{font-size:48px;color:#063b66;margin:10px 0 22px}section p{max-width:800px;line-height:1.8}.light{background:#f4f7fa}.dark{background:#082f49;color:#d9e2ec}.dark h2{color:white}.cards,.gallery{display:grid;grid-template-columns:repeat(4,1fr);gap:15px;margin:30px 0}.cards article{padding:25px;background:white;border:1px solid #d8e1e8;border-radius:12px}.cards b{font-size:30px;display:block;color:#063b66}.timeline{display:grid;grid-template-columns:repeat(7,1fr);gap:7px;margin:35px 0}.timeline div{border-top:3px solid #f6b51b;background:#ffffff0c;padding:18px 10px}.gallery{grid-template-columns:repeat(3,1fr)}.gallery div{height:210px;background:#d9e2ec;border-radius:12px;display:grid;place-items:center;text-align:center;padding:20px}footer{padding:35px 7vw;background:#041f32;color:#bcccdc;text-align:center}footer button{background:none;border:0;color:#f6b51b;font-weight:800;cursor:pointer}dialog{border:0;border-radius:15px;max-width:550px;padding:30px;box-shadow:0 20px 60px #0006}dialog::backdrop{background:#00101dbb}@media(max-width:850px){nav a:not(.gold){display:none}.stats,.cards{grid-template-columns:repeat(2,1fr)}.timeline{grid-template-columns:1fr 1fr}.gallery{grid-template-columns:1fr}}@media(max-width:520px){header span{display:none}.stats,.cards{grid-template-columns:1fr;margin-top:0}.timeline{grid-template-columns:1fr}h2{font-size:36px}}
/* Historical Museum 2017–2018 test build */
.museum-years .era{border:0;border-top:3px solid #f6b51b;background:#ffffff0c;color:#d9e2ec;padding:18px 10px;text-align:left;font:inherit;cursor:pointer;min-height:90px}.museum-years .era b{color:#fff}.museum-years .era em{display:block;margin-top:8px;color:#f6b51b;font-size:11px;font-style:normal;font-weight:800;text-transform:uppercase;letter-spacing:.08em}.museum-years .era:disabled{opacity:.58;cursor:default}.museum-years .era.active:hover{background:#ffffff18;transform:translateY(-2px)}
.archive{background:#f4f7fa}.archive-head{display:flex;gap:30px;justify-content:space-between;align-items:flex-start}.archive-head p{max-width:820px}.archive-stat{min-width:155px;background:#063b66;color:#fff;border-radius:16px;padding:22px;text-align:center;box-shadow:0 12px 28px #063b6620}.archive-stat b{font-size:42px;display:block}.archive-stat span{font-size:12px;text-transform:uppercase;letter-spacing:.1em}.archive-tools{display:grid;grid-template-columns:minmax(260px,1fr) 180px 190px;gap:12px;margin:30px 0 10px}.archive-tools input,.archive-tools select{border:1px solid #cbd5df;background:#fff;border-radius:9px;padding:13px 14px;font:inherit;color:#243b53}.archive-count{font-size:13px;color:#627d98;font-weight:700;margin:10px 0 20px}.museum-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.bus-card{background:#fff;border:1px solid #d8e1e8;border-radius:14px;overflow:hidden;box-shadow:0 8px 24px #102a4310;cursor:pointer;transition:.18s ease}.bus-card:hover{transform:translateY(-4px);box-shadow:0 15px 34px #102a4320}.bus-photo{aspect-ratio:16/9;background:#102a43;overflow:hidden}.bus-photo img{width:100%;height:100%;object-fit:cover;display:block}.photo-missing{height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;background:linear-gradient(135deg,#102a43,#334e68);color:#bcccdc;padding:20px}.photo-missing span{font-size:28px;font-weight:900;color:#fff;margin-bottom:8px}.photo-missing b{color:#f6b51b}.photo-missing small{margin-top:7px;color:#bcccdc;letter-spacing:0}.bus-info{padding:18px}.bus-number{color:#c88400;font-size:12px;font-weight:900;letter-spacing:.12em;text-transform:uppercase}.bus-info h3{margin:7px 0 13px;color:#063b66;font-size:20px}.bus-meta{display:flex;gap:8px;flex-wrap:wrap}.bus-meta span{font-size:12px;background:#edf2f7;border-radius:99px;padding:6px 9px;color:#486581;font-weight:700}.bus-info button{border:0;background:none;color:#063b66;font-weight:800;padding:16px 0 0;cursor:pointer}.bus-dialog{width:min(900px,92vw);max-width:900px;padding:0;overflow:hidden}.dialog-close{position:absolute;right:15px;top:15px;width:38px;height:38px;border-radius:50%;border:0;background:#fff;color:#102a43;font-size:25px;cursor:pointer;z-index:2;box-shadow:0 3px 12px #0003}.record-image{width:100%;max-height:480px;object-fit:cover;display:block;background:#102a43}.bus-dialog #busRecordContent>small,.bus-dialog #busRecordContent>h2,.bus-dialog #busRecordContent>.record-facts,.record-note{margin-left:30px;margin-right:30px}.bus-dialog #busRecordContent>small{display:block;margin-top:26px}.bus-dialog h2{margin-top:7px}.record-facts{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}.record-facts div{background:#f4f7fa;padding:14px;border-radius:9px}.record-facts label{display:block;color:#829ab1;font-size:11px;text-transform:uppercase;font-weight:800;margin-bottom:5px}.record-note{padding-bottom:25px}.record-missing{height:330px}.record-missing span{font-size:44px}
@media(max-width:900px){.museum-grid{grid-template-columns:repeat(2,1fr)}.archive-tools{grid-template-columns:1fr 1fr}.archive-tools input{grid-column:1/-1}.record-facts{grid-template-columns:1fr 1fr}}
@media(max-width:600px){.museum-grid{grid-template-columns:1fr}.archive-head{display:block}.archive-stat{margin-top:20px}.archive-tools{grid-template-columns:1fr}.archive-tools input{grid-column:auto}.record-facts{grid-template-columns:1fr}.bus-dialog #busRecordContent>small,.bus-dialog #busRecordContent>h2,.bus-dialog #busRecordContent>.record-facts,.record-note{margin-left:18px;margin-right:18px}}

/* Museum navigation standard */
.museum-nav{position:sticky;top:64px;z-index:12;display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin:-18px 0 28px;padding:12px 14px;background:rgba(255,255,255,.96);border:1px solid #d8e1e8;border-radius:12px;box-shadow:0 8px 24px #102a4315;backdrop-filter:blur(10px)}
.museum-nav button,.record-nav button{border:1px solid #b8c7d4;background:#fff;color:#063b66;border-radius:8px;padding:10px 13px;font:inherit;font-weight:800;cursor:pointer}.museum-nav button:hover,.record-nav button:hover{background:#edf4f8;border-color:#8aa5b9}.museum-nav span{margin-left:auto;color:#627d98;font-size:12px;font-weight:800;text-transform:uppercase;letter-spacing:.06em}
.record-nav{display:flex;gap:10px;flex-wrap:wrap;padding:0 30px 28px}.record-nav button:first-child{background:#063b66;color:#fff;border-color:#063b66}.record-nav button:first-child:hover{background:#0a4f86}
@media(max-width:700px){.museum-nav{top:54px}.museum-nav button{flex:1 1 100%}.museum-nav span{width:100%;margin-left:0;text-align:center}.record-nav{padding:0 18px 22px}.record-nav button{width:100%}}

[hidden]{display:none!important}section.archive{scroll-margin-top:76px}

.museum-years.timeline{grid-template-columns:repeat(auto-fit,minmax(min(100%,200px),1fr))}.museum-years .era{overflow-wrap:anywhere}