:root{
  --primary:#075ca8;
  --primary-2:#0b82c8;
  --primary-dark:#064578;
  --accent:#ef7c2f;
  --accent-2:#f4b12d;
  --bg:#f5f8fc;
  --surface:#ffffff;
  --surface-2:#edf5fb;
  --text:#13283c;
  --muted:#66798b;
  --border:#dce6ef;
  --shadow:0 18px 45px rgba(16,47,78,.10);
  --header-h:68px;
  --sidebar-w:268px;
  --content-w:1120px;
}
html[data-theme="dark"]{
  --primary:#63b3ed;
  --primary-2:#38bdf8;
  --primary-dark:#0c4a6e;
  --accent:#fb923c;
  --bg:#101820;
  --surface:#17222c;
  --surface-2:#1d2c38;
  --text:#eef7ff;
  --muted:#a9bbc9;
  --border:#2e4352;
  --shadow:0 18px 45px rgba(0,0,0,.28);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;line-height:1.72;-webkit-font-smoothing:antialiased}
body.modal-open{overflow:hidden}
a{color:inherit;text-decoration:none}
button,input{font:inherit}
img{max-width:100%;display:block}
.topbar{position:fixed;z-index:80;inset:0 0 auto;height:var(--header-h);display:flex;align-items:center;gap:14px;padding:0 20px;color:#fff;background:linear-gradient(100deg,var(--primary-dark),var(--primary),var(--primary-2));box-shadow:0 3px 16px rgba(5,54,92,.24)}
.topbar-actions{display:flex;align-items:center;gap:10px;min-width:0}
.brand{display:flex;align-items:center;gap:10px;min-width:0;flex:1 1 auto;font-weight:800}
.brand-mark{width:38px;height:38px;display:grid;place-items:center;border-radius:12px;background:rgba(255,255,255,.18);font-size:15px;letter-spacing:.04em;overflow:hidden;flex:0 0 38px}
.brand-mark-logo{background:rgba(255,255,255,.96);border-radius:50%;padding:2px}
.brand-mark-logo img{width:100%;height:100%;object-fit:contain}
.brand-name{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;display:block}
.brand-name-short{display:none}
.topbar-spacer{flex:1}
.icon-btn{width:40px;height:40px;border:0;border-radius:11px;display:grid;place-items:center;color:inherit;background:transparent;cursor:pointer}
.icon-btn:hover{background:rgba(255,255,255,.15)}
.menu-btn{display:none}
.topbar-search{height:42px;min-width:250px;display:flex;align-items:center;gap:10px;padding:0 12px;border:1px solid rgba(255,255,255,.20);border-radius:12px;color:#fff;background:rgba(4,43,75,.20);cursor:pointer}
.topbar-search:hover{background:rgba(4,43,75,.32)}
.topbar-search-label{flex:1;text-align:left;color:rgba(255,255,255,.9)}
.topbar-search kbd{padding:2px 7px;border:1px solid rgba(255,255,255,.24);border-radius:6px;font-size:11px;background:rgba(255,255,255,.12)}
.top-link{display:flex;align-items:center;gap:7px;padding:8px 10px;border-radius:10px;color:rgba(255,255,255,.94);font-size:13px;font-weight:700}
.top-link:hover{background:rgba(255,255,255,.14)}
.quick-links{position:relative;flex:0 0 auto}
.quick-links-button{border:1px solid rgba(255,255,255,.18);background:rgba(4,43,75,.16);font-size:20px;font-weight:800}
.quick-links-button:hover,.quick-links.open .quick-links-button{background:rgba(4,43,75,.34)}
.quick-links-menu{position:absolute;top:calc(100% + 12px);right:0;width:min(230px,calc(100vw - 20px));padding:8px;border:1px solid var(--border);border-radius:16px;background:var(--surface);box-shadow:0 18px 50px rgba(0,27,48,.24);color:var(--text);opacity:0;visibility:hidden;transform:translateY(-7px) scale(.98);transform-origin:top right;transition:opacity .16s,transform .16s,visibility .16s}
.quick-links-menu::before{content:"";position:absolute;right:15px;top:-6px;width:12px;height:12px;border-left:1px solid var(--border);border-top:1px solid var(--border);background:var(--surface);transform:rotate(45deg)}
.quick-links.open .quick-links-menu{opacity:1;visibility:visible;transform:translateY(0) scale(1)}
.quick-links-menu a{position:relative;z-index:1;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:11px 12px;border-radius:11px}
.quick-links-menu a:hover{background:var(--surface-2)}
.quick-links-menu a span{display:flex;min-width:0;flex-direction:column;gap:2px}
.quick-links-menu strong{font-size:14px}
.quick-links-menu small{color:var(--muted);font-size:11px;font-weight:500}
.quick-links-menu b{color:var(--primary);font-size:16px}
.sidebar{position:fixed;z-index:60;top:var(--header-h);bottom:0;left:0;width:var(--sidebar-w);padding:24px 14px 30px;overflow:auto;background:var(--surface);border-right:1px solid var(--border)}
.sidebar-label{padding:0 14px 9px;color:var(--primary);font-size:12px;font-weight:900;letter-spacing:.13em}
.nav-list{list-style:none;margin:0;padding:0}
.nav-list a{display:flex;align-items:center;gap:11px;min-height:44px;margin:3px 0;padding:9px 14px;border-radius:11px;color:var(--muted);font-size:14px;font-weight:700;transition:.18s}
.nav-list a:hover{color:var(--text);background:var(--surface-2);transform:translateX(2px)}
.nav-list a.active{color:var(--primary);background:color-mix(in srgb,var(--primary) 12%,transparent)}
.nav-icon{width:22px;min-width:22px;display:inline-flex;align-items:center;justify-content:center;line-height:1}
.sidebar-card{margin:24px 10px 0;padding:16px;border:1px solid var(--border);border-radius:15px;background:var(--surface-2);color:var(--muted);font-size:13px}
.sidebar-card strong{display:block;color:var(--text);margin-bottom:4px}
.page-shell{min-height:100vh;padding-top:var(--header-h);padding-left:var(--sidebar-w)}
.main{width:min(100%,calc(var(--content-w) + 68px));margin:auto;padding:36px 34px 80px}
.hero{position:relative;min-height:500px;overflow:hidden;display:flex;align-items:center;padding:72px 70px;border-radius:30px;color:#fff;box-shadow:0 30px 70px rgba(5,72,123,.25)}
.hero-photo{background-image:linear-gradient(100deg,rgba(3,45,77,.94) 0%,rgba(5,75,127,.80) 48%,rgba(7,92,168,.26) 100%),url("hero-campus.jpg");background-position:center;background-size:cover}
.hero-content{position:relative;z-index:2;max-width:760px}
.hero-kicker{display:inline-flex;padding:7px 13px;border:1px solid rgba(255,255,255,.3);border-radius:999px;background:rgba(255,255,255,.12);font-size:13px;font-weight:800;letter-spacing:.05em}
.hero h1{margin:22px 0 15px;font-size:clamp(44px,6vw,78px);line-height:1.06;letter-spacing:-.055em}
.hero h1 span{color:#8ed7ff}
.hero p{max-width:670px;margin:0;color:rgba(255,255,255,.88);font-size:clamp(17px,2vw,21px)}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.hero-meta{display:flex;flex-wrap:wrap;gap:9px 18px;margin-top:26px;color:rgba(255,255,255,.68);font-size:12px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;min-height:46px;padding:0 19px;border:1px solid transparent;border-radius:12px;font-weight:800;cursor:pointer;transition:.18s}
.btn:hover{transform:translateY(-2px)}
.btn-primary{color:#07518e;background:#fff;box-shadow:0 12px 25px rgba(0,0,0,.16)}
.btn-secondary{color:#fff;border-color:rgba(255,255,255,.36);background:rgba(255,255,255,.1)}
.btn-accent{color:#fff;background:linear-gradient(135deg,var(--accent),var(--accent-2));box-shadow:0 12px 28px rgba(239,124,47,.26)}
.btn-blue{color:#fff;background:linear-gradient(135deg,var(--primary),var(--primary-2))}
.btn-outline{color:var(--primary);border-color:var(--border);background:var(--surface)}
.stats{position:relative;z-index:3;display:grid;grid-template-columns:repeat(6,1fr);gap:12px;margin:-36px 28px 70px}
.stat{min-height:116px;padding:20px 10px;text-align:center;border:1px solid var(--border);border-radius:17px;background:var(--surface);box-shadow:var(--shadow)}
.stat strong{display:block;color:var(--primary);font-size:24px;line-height:1.25}
.stat span{display:block;margin-top:8px;color:var(--muted);font-size:12px}
.section{margin:76px 0;scroll-margin-top:92px}
.section-head{margin-bottom:26px}
.eyebrow{margin-bottom:7px;color:var(--primary);font-size:12px;font-weight:900;letter-spacing:.13em;text-transform:uppercase}
.section h2,.community-strip h2{margin:0;font-size:clamp(28px,4vw,42px);line-height:1.22;letter-spacing:-.03em}
.section-lead{max-width:760px;margin:10px 0 0;color:var(--muted)}
.portal-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.portal-card{display:flex;gap:16px;min-height:190px;padding:25px;border:1px solid var(--border);border-radius:20px;background:var(--surface);box-shadow:0 10px 30px rgba(15,58,91,.06);transition:.2s}
.portal-card:hover{transform:translateY(-5px);border-color:color-mix(in srgb,var(--primary) 35%,var(--border));box-shadow:var(--shadow)}
.portal-icon{width:49px;height:49px;flex:0 0 49px;display:grid;place-items:center;border-radius:15px;background:linear-gradient(145deg,#e5f4ff,#f6fbff);font-size:23px}
html[data-theme="dark"] .portal-icon{background:var(--surface-2)}
.portal-card h3{margin:2px 0 8px;font-size:19px}
.portal-card p{margin:0;color:var(--muted);font-size:14px}
.portal-card span{display:block;margin-top:18px;color:var(--primary);font-size:13px;font-weight:800}
.feature-split{display:grid;grid-template-columns:1fr 1fr;gap:30px;align-items:stretch}
.feature-copy,.map-preview{border:1px solid var(--border);border-radius:24px;background:var(--surface);overflow:hidden}
.feature-copy{padding:34px}
.feature-copy h2{margin:0 0 22px;font-size:34px}
.quick-list{display:grid;gap:8px}
.quick-list a{display:grid;grid-template-columns:42px 1fr auto;gap:12px;align-items:center;padding:14px 0;border-bottom:1px solid var(--border)}
.quick-list a:last-child{border:0}
.quick-list strong{color:var(--primary)}
.quick-list span{font-weight:800}
.quick-list em{color:var(--muted);font-size:12px;font-style:normal}
.map-preview{position:relative;min-height:450px}
.map-preview img{width:100%;height:100%;object-fit:cover;transition:.35s}
.map-preview:hover img{transform:scale(1.025)}
.map-preview span{position:absolute;left:22px;bottom:22px;padding:11px 15px;border-radius:11px;color:#fff;background:rgba(3,39,66,.82);font-weight:800;backdrop-filter:blur(8px)}
.gallery-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:13px}
.gallery-item{height:230px;padding:0;border:0;border-radius:18px;overflow:hidden;background:var(--surface-2);cursor:zoom-in}
.gallery-item.gallery-wide{grid-column:span 2}
.gallery-item img{width:100%;height:100%;object-fit:cover;transition:.28s}
.gallery-item:hover img{transform:scale(1.04)}
.community-strip{display:flex;align-items:center;justify-content:space-between;gap:30px;margin:80px 0 34px;padding:38px;border:1px solid #cfe5f5;border-radius:24px;background:linear-gradient(120deg,#eaf7ff,#ffffff 55%,#fff6e7)}
html[data-theme="dark"] .community-strip{border-color:var(--border);background:linear-gradient(120deg,#183349,var(--surface))}
.community-strip p{margin:8px 0 0;color:var(--muted)}
.site-footer,.footer{display:flex;align-items:center;justify-content:space-between;gap:18px;padding-top:24px;border-top:1px solid var(--border);color:var(--muted);font-size:13px}
.site-footer a,.text-link{color:var(--primary);font-weight:800}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 220px;gap:44px}
.article{min-width:0}
.article-header{margin:10px 0 34px;padding-bottom:28px;border-bottom:1px solid var(--border)}
.breadcrumb{margin-bottom:8px;color:var(--primary);font-size:13px;font-weight:800}
.article-header h1{margin:0;font-size:clamp(34px,5vw,54px);line-height:1.15;letter-spacing:-.04em}
.article-header p{max-width:780px;margin:12px 0 0;color:var(--muted);font-size:17px}
.article h2{margin:58px 0 17px;padding-top:8px;scroll-margin-top:94px;font-size:29px;line-height:1.3;letter-spacing:-.02em}
.article h3{margin:30px 0 12px;font-size:20px}
.article p{color:var(--text)}
.toc{position:sticky;top:100px;height:max-content;padding:15px;border-left:1px solid var(--border)}
.toc-title{margin-bottom:8px;color:var(--text);font-size:13px;font-weight:900}
.toc a{display:block;padding:7px 0;color:var(--muted);font-size:13px}
.toc a:hover{color:var(--primary)}
.callout{margin:22px 0;padding:18px 20px;border:1px solid #b9dff5;border-left:4px solid var(--primary);border-radius:14px;background:#edf8ff;color:#315169}
.callout.warning{border-color:#f4d2a3;border-left-color:var(--accent);background:#fff8ed;color:#725135}
html[data-theme="dark"] .callout{background:#143147;color:#d9ecfa;border-color:#2e5c77}
html[data-theme="dark"] .callout.warning{background:#392b1d;color:#f5ddc4;border-color:#684923}
.check-list{list-style:none;padding:0;margin:18px 0}
.check-list li{position:relative;margin:10px 0;padding:13px 14px 13px 42px;border:1px solid var(--border);border-radius:13px;background:var(--surface)}
.check-list li:before{content:"✓";position:absolute;left:15px;top:13px;color:var(--primary);font-weight:900}
.timeline{display:grid;gap:10px}
.timeline>div{display:grid;grid-template-columns:160px 1fr;align-items:center;padding:15px 18px;border:1px solid var(--border);border-radius:13px;background:var(--surface)}
.timeline strong{color:var(--primary)}
.timeline .highlight{border-color:#8cc8ee;background:#edf8ff}
html[data-theme="dark"] .timeline .highlight{background:#173549}
.resource-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.resource-card{position:relative;min-height:205px;padding:23px;border:1px solid var(--border);border-radius:17px;background:var(--surface)}
.resource-type{position:absolute;right:18px;top:17px;padding:4px 8px;border-radius:999px;color:var(--primary);background:var(--surface-2);font-size:11px;font-weight:900}
.resource-card h3{margin:0 55px 8px 0;font-size:18px}
.resource-card p{margin:0 0 17px;color:var(--muted);font-size:13px}
.source-note{margin:10px 0;color:var(--muted);font-size:12px}
.action-row{display:flex;flex-wrap:wrap;gap:10px;margin:20px 0}
.step-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.step-grid>div{position:relative;padding:22px 20px 20px 58px;border:1px solid var(--border);border-radius:16px;background:var(--surface)}
.step-grid span{position:absolute;left:18px;top:19px;width:28px;height:28px;display:grid;place-items:center;border-radius:9px;color:#fff;background:var(--primary);font-weight:900}
.step-grid h3{margin:0 0 5px}
.step-grid p{margin:0;color:var(--muted);font-size:13px}
.map-figure{margin:18px 0 30px}
.map-figure button{display:block;width:100%;padding:0;border:0;border-radius:19px;overflow:hidden;background:var(--surface-2);cursor:zoom-in}
.map-figure img{width:100%;max-height:760px;object-fit:contain;background:#fff}
.map-figure.map-wide img{max-height:1000px}
.map-figure figcaption{margin-top:9px;color:var(--muted);font-size:13px}
.location-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}
.location-grid div{padding:15px;border:1px solid var(--border);border-radius:13px;background:var(--surface)}
.location-grid strong,.location-grid span{display:block}
.location-grid span{margin-top:4px;color:var(--muted);font-size:12px}
.resource-toolbar{position:sticky;z-index:20;top:82px;margin:0 0 24px;padding:16px;border:1px solid var(--border);border-radius:17px;background:color-mix(in srgb,var(--surface) 92%,transparent);backdrop-filter:blur(12px)}
.resource-search{display:flex;align-items:center;gap:9px;padding:0 13px;border:1px solid var(--border);border-radius:11px;background:var(--surface)}
.resource-search input{width:100%;height:44px;border:0;outline:0;color:var(--text);background:transparent}
.filter-row{display:flex;flex-wrap:wrap;gap:7px;margin-top:12px}
.filter-chip{padding:7px 11px;border:1px solid var(--border);border-radius:999px;color:var(--muted);background:var(--surface);cursor:pointer;font-size:12px;font-weight:800}
.filter-chip.active{color:#fff;border-color:var(--primary);background:var(--primary)}
.download-list{display:grid;gap:10px}
.download-item{display:grid;grid-template-columns:48px 1fr auto;gap:14px;align-items:center;padding:17px 18px;border:1px solid var(--border);border-radius:15px;background:var(--surface);transition:.16s}
.download-item:hover{transform:translateY(-2px);box-shadow:0 10px 25px rgba(15,58,91,.07)}
.download-number{color:var(--primary);font-size:13px;font-weight:900}
.download-category{color:var(--primary);font-size:11px;font-weight:900}
.download-copy h3{margin:3px 0 2px;font-size:16px}
.download-copy p{margin:0;color:var(--muted);font-size:12px}
.download-button{padding:8px 13px;border-radius:10px;color:#fff;background:var(--primary);font-size:12px;font-weight:900}
.hidden{display:none!important}
.search-empty{padding:35px;text-align:center;color:var(--muted)}
.community-card{display:grid;grid-template-columns:1fr 290px;gap:30px;align-items:center;padding:30px;border:1px solid var(--border);border-radius:22px;background:var(--surface)}
.community-card h3{margin:4px 0 8px;font-size:30px}
.community-card p{color:var(--muted)}
.community-card img{width:100%;border-radius:16px;border:1px solid var(--border)}
.search-overlay,.group-modal,.lightbox{position:fixed;z-index:120;inset:0;display:none;align-items:flex-start;justify-content:center;padding:92px 20px 30px;background:rgba(5,18,28,.68);backdrop-filter:blur(7px)}
.search-overlay.open,.group-modal.open,.lightbox.open{display:flex}
.search-box{width:min(720px,100%);overflow:hidden;border:1px solid var(--border);border-radius:20px;background:var(--surface);box-shadow:0 30px 80px rgba(0,0,0,.32)}
.search-input-wrap{display:flex;align-items:center;gap:10px;padding:10px 13px;border-bottom:1px solid var(--border)}
.search-input{flex:1;height:46px;border:0;outline:0;color:var(--text);background:transparent;font-size:17px}
.search-results{max-height:60vh;overflow:auto;padding:8px}
.search-result{display:block;padding:13px 14px;border-radius:12px}
.search-result:hover{background:var(--surface-2)}
.search-result strong{display:block}
.search-result span{display:block;margin-top:3px;color:var(--muted);font-size:12px}
.group-modal{align-items:center;padding-top:30px}
.group-modal-card{position:relative;width:min(440px,100%);padding:30px;border-radius:24px;text-align:center;background:var(--surface);box-shadow:0 30px 80px rgba(0,0,0,.34)}
.group-modal-close{position:absolute;right:14px;top:14px;width:36px;height:36px;border:0;border-radius:10px;color:var(--muted);background:var(--surface-2);cursor:pointer}
.group-modal-kicker{color:var(--primary);font-size:12px;font-weight:900;letter-spacing:.1em}
.group-modal-card h2{margin:7px 0 4px}
.group-modal-card p{margin:0 0 16px;color:var(--muted);font-size:13px}
.group-modal-card img{width:min(320px,100%);margin:auto;border:1px solid var(--border);border-radius:18px}
.group-number-row{display:flex;align-items:center;justify-content:center;gap:9px;margin-top:13px}
.group-number{font-weight:900}
.group-copy-button{padding:7px 10px;border:1px solid var(--border);border-radius:9px;color:var(--primary);background:var(--surface);cursor:pointer;font-weight:800}
.lightbox{align-items:center;padding:25px;cursor:zoom-out}
.lightbox img{max-width:min(1400px,96vw);max-height:92vh;object-fit:contain;border-radius:12px;box-shadow:0 25px 80px rgba(0,0,0,.4)}
.backdrop{display:none}
.not-found{min-height:70vh;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center}
.not-found-code{color:var(--primary);font-size:100px;font-weight:950;line-height:1}
.not-found h1{margin:14px 0 6px;font-size:38px}
.not-found p{color:var(--muted)}
@media(max-width:1120px){
  .portal-grid{grid-template-columns:repeat(2,1fr)}
  .stats{grid-template-columns:repeat(3,1fr)}
  .location-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:900px){
  :root{--sidebar-w:0px}
  .topbar{gap:10px;padding:0 12px}
  .menu-btn{display:grid}
  .topbar-actions{gap:8px}
  .topbar-search{min-width:0;width:44px;padding:0;justify-content:center}
  .topbar-search-label,.topbar-search kbd{display:none}
  .sidebar{width:280px;transform:translateX(-102%);transition:.22s}
  .sidebar.open{transform:translateX(0)}
  .backdrop.open{display:block;position:fixed;z-index:55;inset:var(--header-h) 0 0;background:rgba(0,0,0,.38)}
  .page-shell{padding-left:0}
  .main{padding:25px 20px 60px}
  .article-layout{grid-template-columns:1fr}
  .toc{display:none}
  .hero{min-height:470px;padding:55px 38px}
  .feature-split{grid-template-columns:1fr}
  .resource-grid{grid-template-columns:1fr}
  .community-card{grid-template-columns:1fr}
  .community-card img{max-width:330px}
}
@media(max-width:650px){
  .topbar{gap:8px;padding:0 10px}
  .brand{min-width:0;flex:0 1 auto;gap:8px}
  .brand-mark{width:34px;height:34px;flex-basis:34px}
  .brand-name{max-width:none;overflow:visible;text-overflow:clip;font-size:15px;letter-spacing:.01em}
  .topbar-actions{gap:6px}
  .quick-links-menu{top:calc(100% + 10px)}
  .hero{min-height:500px;padding:42px 24px;border-radius:22px}
  .hero h1{font-size:45px}
  .stats{grid-template-columns:repeat(2,1fr);margin:-26px 10px 55px}
  .stat{min-height:102px}
  .portal-grid{grid-template-columns:1fr}
  .portal-card{min-height:160px}
  .gallery-grid{grid-template-columns:repeat(2,1fr)}
  .gallery-item,.gallery-item.gallery-wide{grid-column:auto;height:185px}
  .community-strip{align-items:flex-start;flex-direction:column;padding:28px}
  .step-grid{grid-template-columns:1fr}
  .timeline>div{grid-template-columns:1fr;gap:3px}
  .location-grid{grid-template-columns:1fr 1fr}
  .download-item{grid-template-columns:35px 1fr}
  .download-button{grid-column:2;width:max-content}
  .site-footer,.footer{align-items:flex-start;flex-direction:column}
  .quick-list a{grid-template-columns:35px 1fr}
  .quick-list em{grid-column:2}
}
@media(max-width:380px){
  .topbar{gap:5px;padding:0 7px}
  .icon-btn{width:36px;height:36px}
  .topbar-search{width:36px;height:38px}
  .brand{gap:6px}
  .brand-mark{width:31px;height:31px;flex-basis:31px}
  .brand-name{font-size:13px}
  .topbar-actions{gap:3px}
}

/* v1.2 PDF online preview actions */
.resource-actions,.download-actions{display:flex;flex-wrap:wrap;align-items:center;gap:11px}
.resource-actions .secondary-link{color:var(--muted)}
.download-actions{justify-content:flex-end}
.download-actions .download-button{position:static}
.download-actions .download-secondary{color:var(--primary);border:1px solid var(--border);background:var(--surface)}
.download-actions .preview-button{background:linear-gradient(135deg,var(--primary),var(--primary-2))}
@media(max-width:650px){
  .download-actions{grid-column:2;justify-content:flex-start}
  .download-actions .download-button{width:auto}
}


/* v1.10 — cache-safe responsive header */
.topbar{overflow:visible}
.brand{flex:0 1 auto;max-width:min(360px,46vw)}
.brand-name{font-weight:850}
.topbar-spacer{min-width:8px}
.topbar-actions{flex:0 0 auto}
.quick-links-menu{z-index:140}

/* Static fallback header is visible before JavaScript runs. */
.topbar .fallback-only{display:flex}

@media(max-width:900px){
  .topbar{gap:8px;padding-inline:10px}
  .brand{flex:1 1 0;max-width:none}
  .brand-name{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  .topbar-spacer{display:none}
  .topbar-actions{flex:0 0 auto}
}
@media(max-width:650px){
  .topbar{gap:6px;padding-inline:8px}
  .menu-btn{width:36px;height:36px;flex:0 0 36px}
  .brand{gap:7px;min-width:0}
  .brand-mark{width:32px;height:32px;flex:0 0 32px;padding:1px}
  .brand-name{font-size:14px;line-height:1.2}
  .topbar-actions{gap:3px}
  .topbar-actions>.icon-btn,.topbar-actions>.quick-links .icon-btn{width:36px;height:36px}
  .topbar-search{width:36px;height:36px}
  .quick-links-menu{position:fixed;top:calc(var(--header-h) - 3px);right:8px;width:min(250px,calc(100vw - 16px))}
  .quick-links-menu::before{right:14px}
}
@media(max-width:350px){
  .topbar{gap:4px;padding-inline:6px}
  .brand{gap:5px}
  .brand-mark{width:29px;height:29px;flex-basis:29px}
  .brand-name{font-size:13px}
  .topbar-actions>.icon-btn,.topbar-actions>.quick-links .icon-btn,.topbar-search{width:33px;height:33px}
}


/* v1.11 — responsive brand title and student-created icon */
.brand-name-mobile{display:none}
.brand-mark-logo{background:rgba(255,255,255,.98);padding:1px;box-shadow:0 0 0 1px rgba(255,255,255,.28)}
.brand-mark-logo img{border-radius:50%}
@media(min-width:651px){
  .brand-name-desktop{display:block}
  .brand-name-mobile{display:none}
  .brand{max-width:min(520px,56vw)}
}
@media(max-width:650px){
  .brand-name-desktop{display:none!important}
  .brand-name-mobile{display:block}
  .brand-name{overflow:visible;text-overflow:clip;white-space:nowrap}
}