:root{
  --roof-blue:#087bb5;
  --roof-blue-dark:#066a9d;
  --roof-dark:#3f4d5d;
  --roof-text:#44515f;
  --roof-muted:#70808e;
  --roof-line:#dce4e9;
  --roof-soft:#f5f8fa;
  --roof-shadow:0 14px 38px rgba(38,61,78,.08);
  --roof-shadow-hover:0 18px 46px rgba(38,61,78,.13);
  --site-container:1900px
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:#fff;color:var(--roof-text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif;line-height:1.62;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:var(--roof-blue-dark)}
.site-header{background:#fff;border-top:6px solid var(--roof-dark);box-shadow:0 1px 0 rgba(39,57,70,.08)}
.site-header>.wrap{width:100%;max-width:none;margin:0}
.site-title{width:min(92vw,var(--site-container));margin:0 auto;padding:16px 0 14px;display:flex;align-items:center;justify-content:space-between;gap:54px;line-height:1}
.site-title .brand{color:var(--roof-dark);font-weight:700;text-decoration:none;letter-spacing:-.02em}
.brand-logo{display:inline-flex;align-items:center;flex:0 1 520px;max-width:100%}
.brand-logo img{width:min(520px,88vw);height:auto}
.header-season-card{display:flex;align-items:center;gap:18px;width:min(760px,46vw);min-height:132px;padding:20px 24px;border:1px solid #d8e8f1;border-radius:18px;background:#eef6fa;color:var(--roof-dark);text-decoration:none;box-shadow:0 12px 32px rgba(38,61,78,.06);transition:border-color .18s ease,background-color .18s ease,box-shadow .18s ease}
.header-season-card:hover,.header-season-card:focus-visible{border-color:#b8d5e5;background:#f7fbfd;box-shadow:var(--roof-shadow)}
.header-season-icon{display:grid;place-items:center;flex:0 0 66px;width:66px;height:66px;border-radius:16px;background:#fff;color:var(--roof-blue);box-shadow:0 8px 22px rgba(38,61,78,.07)}
.header-season-icon svg{width:44px;height:44px;fill:none;stroke:currentColor;stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round}
.header-season-copy{display:flex;min-width:0;flex:1;flex-direction:column;gap:7px;line-height:1.25}
.header-season-kicker{color:var(--roof-blue);font-size:11px;font-weight:800;letter-spacing:.09em;text-transform:uppercase}
.header-season-copy strong{font-size:20px;line-height:1.15;letter-spacing:-.015em}
.header-season-text{color:var(--roof-muted);font-size:13px;line-height:1.45}
.header-season-meta{display:flex;flex-wrap:wrap;gap:9px 14px;color:#7d8b97;font-size:11px;line-height:1.35}
.header-season-meta b{color:var(--roof-blue-dark);font-weight:750}
.site-header nav{display:flex;justify-content:flex-start;align-items:center;flex-wrap:wrap;gap:2px;min-height:58px;margin:0;padding-inline:max(4vw,calc((100vw - var(--site-container))/2));background:var(--roof-blue)}
.site-header nav a{display:block;padding:18px 16px;color:#fff;font-size:15px;font-weight:600;text-decoration:none;transition:background-color .18s ease}
.site-header nav a:hover,.site-header nav a:focus-visible{background:rgba(255,255,255,.12);color:#fff}
main.wrap{width:100%;max-width:none;margin:0;padding:0}
.collection-title{width:min(92vw,var(--site-container));margin:46px auto 0;color:var(--roof-dark);font-size:clamp(36px,4vw,54px);line-height:1.08;letter-spacing:-.035em}
.page{width:min(92vw,var(--site-container));margin:48px auto 72px;padding:0;background:#fff}
.page>.eyebrow{display:none}
.page>h1{max-width:1100px;margin:0 0 28px;color:var(--roof-dark);font-size:clamp(36px,4vw,58px);line-height:1.08;letter-spacing:-.035em}
.page>.featured{display:block;width:min(100%,1200px);height:auto;margin:0 0 32px;border-radius:18px;object-fit:cover}
.page>.content{width:100%;max-width:none;font-size:18px;line-height:1.72}
.page>.content p{margin:0 0 1.2em}
.page>.content h2{margin:2em 0 .7em;color:var(--roof-dark);font-size:clamp(27px,2.4vw,35px);line-height:1.2;letter-spacing:-.02em}
.page>.content h3{margin:1.7em 0 .65em;color:var(--roof-dark);font-size:24px;line-height:1.25}
.page>.content ul,.page>.content ol{padding-left:1.4em;margin:0 0 1.35em}
.page>.content li{margin:.42em 0}
.page>.content a{color:var(--roof-blue-dark);text-underline-offset:3px}
.page>.content img{height:auto;margin:26px 0;border-radius:15px}
.lio-section-page{width:min(92vw,var(--site-container));margin:42px auto 74px;display:grid;gap:28px}
.lio-section-intro{max-width:980px;color:var(--roof-muted);font-size:19px;line-height:1.65}
.lio-section-intro p{margin:0}
.lio-section-children{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:26px}
.lio-section-child{min-width:0;display:flex;flex-direction:column;overflow:hidden;padding:0 0 22px;border:1px solid var(--roof-line);border-radius:18px;background:#fff;box-shadow:var(--roof-shadow);transition:border-color .18s ease,box-shadow .18s ease}
.lio-section-child:hover,.lio-section-child:focus-within{border-color:#bdd0db;box-shadow:var(--roof-shadow-hover)}
.lio-section-child-image{display:block;width:100%;aspect-ratio:16/10;overflow:hidden;background:var(--roof-soft)}
.lio-section-child-image img{width:100%;height:100%;object-fit:cover;transition:transform .28s ease}
.lio-section-child:hover .lio-section-child-image img{transform:scale(1.025)}
.lio-section-child-date{display:block;margin:18px 22px -7px;color:var(--roof-blue);font-size:12px;font-weight:700;line-height:1.3;letter-spacing:.02em;text-transform:uppercase}
.lio-section-child-date+h2,.lio-section-child-date+h3{margin-top:14px}
.article-published{margin:-4px 0 24px!important;color:var(--roof-muted)!important;font-size:14px!important;line-height:1.4!important}
.lio-section-child h2,.lio-section-child h3{margin:20px 22px 10px;color:var(--roof-dark);font-size:21px;line-height:1.28;letter-spacing:-.015em}
.lio-section-child h2 a,.lio-section-child h3 a{color:inherit;text-decoration:none}
.lio-section-child p{margin:0 22px 18px;color:var(--roof-muted);font-size:15px;line-height:1.58}
.lio-section-child-link{margin:auto 22px 0;font-size:14px;font-weight:700;text-decoration:none}
.lio-section-child-link::after{content:" →"}
.lio-section-empty{margin:0;color:var(--roof-muted)}
.roof-collection{margin-top:28px}
.related-materials{margin:58px 0 6px;padding-top:30px;border-top:1px solid var(--roof-line)}
.related-materials>h2{margin:0 0 20px!important;font-size:clamp(25px,2vw,31px)!important}
.related-links{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
.page>.content .related-link{display:flex;min-height:150px;flex-direction:column;gap:9px;padding:20px;border:1px solid var(--roof-line);border-radius:16px;background:var(--roof-soft);color:var(--roof-dark);text-decoration:none;transition:border-color .18s ease,box-shadow .18s ease,background-color .18s ease}
.page>.content .related-link:hover,.page>.content .related-link:focus-visible{border-color:#b8ceda;background:#fff;box-shadow:var(--roof-shadow)}
.related-link strong{display:block;font-size:18px;line-height:1.28}
.related-link span{display:block;color:var(--roof-muted);font-size:14px;line-height:1.55}
.related-link-hub{background:#eef6fa!important}
.home-hero{width:min(92vw,var(--site-container));margin:48px auto 34px;display:grid;grid-template-columns:minmax(0,1.05fr) minmax(420px,.95fr);gap:42px;align-items:stretch}
.home-hero-copy{display:flex;flex-direction:column;justify-content:center;padding:38px 8px 38px 0}
.home-kicker{margin:0 0 12px;color:var(--roof-blue);font-size:13px;font-weight:800;letter-spacing:.08em;text-transform:uppercase}
.home-hero h1{max-width:980px;margin:0;color:var(--roof-dark);font-size:clamp(42px,5vw,72px);line-height:1.02;letter-spacing:-.045em}
.home-lead{max-width:900px;margin:24px 0 0;color:var(--roof-muted);font-size:20px;line-height:1.62}
.home-actions{display:flex;flex-wrap:wrap;gap:12px;margin:30px 0 0}
.home-btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:12px 18px;border:1px solid var(--roof-line);border-radius:12px;background:#fff;color:var(--roof-dark);font-size:15px;font-weight:750;text-decoration:none;transition:border-color .18s ease,background-color .18s ease,color .18s ease,box-shadow .18s ease}
.home-btn:hover,.home-btn:focus-visible{border-color:#b7ccd8;box-shadow:var(--roof-shadow)}
.home-btn-primary{border-color:var(--roof-blue);background:var(--roof-blue);color:#fff}
.home-btn-primary:hover,.home-btn-primary:focus-visible{border-color:var(--roof-blue-dark);background:var(--roof-blue-dark);color:#fff}
.home-focus{display:flex;flex-wrap:wrap;gap:8px;margin-top:28px}
.home-focus span{padding:7px 10px;border-radius:999px;background:var(--roof-soft);color:var(--roof-muted);font-size:13px;font-weight:650}
.home-hero-media{position:relative;display:block;min-height:430px;overflow:hidden;border-radius:24px;background:var(--roof-soft);box-shadow:var(--roof-shadow)}
.home-hero-media img{width:100%;height:100%;object-fit:cover}
.home-section{width:min(92vw,var(--site-container));margin:72px auto}
.home-section-head,.roof-topic-head{display:flex;align-items:flex-end;justify-content:space-between;gap:28px;margin-bottom:24px}
.home-section-head h2,.roof-topic-head h2,.home-all-materials h2{margin:0;color:var(--roof-dark);font-size:clamp(30px,3vw,44px);line-height:1.12;letter-spacing:-.03em}
.home-section-head>p,.roof-topic-head>p{max-width:700px;margin:0;color:var(--roof-muted);font-size:16px}
.home-section-link,.roof-back-top{flex:0 0 auto;color:var(--roof-blue-dark);font-size:14px;font-weight:700;text-decoration:none}
.home-quick-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
.home-quick-card{display:flex;min-height:150px;flex-direction:column;justify-content:space-between;gap:18px;padding:22px;border:1px solid var(--roof-line);border-radius:16px;background:var(--roof-soft);color:var(--roof-dark);text-decoration:none;transition:border-color .18s ease,background-color .18s ease,box-shadow .18s ease}
.home-quick-card:hover,.home-quick-card:focus-visible{border-color:#b7ccd8;background:#fff;box-shadow:var(--roof-shadow)}
.home-quick-card strong{font-size:20px;line-height:1.25}
.home-quick-card span{color:var(--roof-muted);font-size:14px;line-height:1.55}
.latest-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
.home-scenarios{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.home-scenarios article{padding:26px;border:1px solid var(--roof-line);border-radius:18px;background:#fff}
.home-scenario-num{display:block;margin-bottom:28px;color:#a7bbc7;font-size:13px;font-weight:800;letter-spacing:.08em}
.home-scenarios h3{margin:0 0 12px;color:var(--roof-dark);font-size:24px;line-height:1.25}
.home-scenarios p{margin:0 0 18px;color:var(--roof-muted);font-size:15px;line-height:1.65}
.home-scenarios a{color:var(--roof-blue-dark);font-size:14px;font-weight:700;text-decoration:none}
.home-all-materials{width:min(92vw,var(--site-container));margin:72px auto 82px;padding:34px 38px;display:flex;align-items:center;justify-content:space-between;gap:34px;border-radius:22px;background:#eef6fa}
.home-all-materials>div{max-width:1100px}
.home-all-materials p:last-child{margin:14px 0 0;color:var(--roof-muted);font-size:17px;line-height:1.65}
.roof-library-intro{width:min(92vw,var(--site-container));margin:18px auto 36px}
.roof-library-intro>p{max-width:980px;margin:0;color:var(--roof-muted);font-size:18px;line-height:1.65}
.roof-topic-nav{display:flex;flex-wrap:wrap;gap:9px;margin-top:22px}
.roof-topic-nav a{padding:9px 12px;border:1px solid var(--roof-line);border-radius:999px;background:#fff;color:var(--roof-dark);font-size:14px;font-weight:650;text-decoration:none}
.roof-topic-nav a:hover,.roof-topic-nav a:focus-visible{border-color:#b7ccd8;background:var(--roof-soft)}
.roof-topic-section{width:min(92vw,var(--site-container));margin:56px auto 76px;scroll-margin-top:24px}
.roof-latest-section{margin-top:42px;padding:30px;border-radius:22px;background:var(--roof-soft)}
.roof-latest-section .lio-section-child{background:#fff}
.roof-topic-head>div>p{max-width:760px;margin:8px 0 0;color:var(--roof-muted);font-size:16px;line-height:1.55}
.site-footer{margin-top:30px;padding:30px 0 32px;background:var(--roof-blue);color:#fff;font-size:14px;line-height:1.55}
.site-footer .wrap{width:min(92vw,var(--site-container));margin:0 auto;display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap}
.footer-logo{display:block;flex:0 1 430px;max-width:100%}
.footer-logo img{width:min(430px,100%);height:auto}
.footer-copy{display:flex;max-width:760px;flex-direction:column;gap:4px;text-align:right}
.site-footer strong{color:#fff;font-weight:600}
.screen-reader-text{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
@media(max-width:1400px){.lio-section-children{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media(max-width:1200px){
  .site-title{align-items:stretch;flex-direction:column;gap:12px}
  .brand-logo{flex:0 0 auto}
  .brand-logo img{width:min(460px,88vw)}
  .header-season-card{width:100%;min-height:104px;padding:16px 18px}
  .header-season-icon{flex-basis:56px;width:56px;height:56px}
  .header-season-icon svg{width:38px;height:38px}
}
@media(max-width:1050px){
  .site-title,.collection-title,.page,.lio-section-page,.home-hero,.home-section,.home-all-materials,.roof-library-intro,.roof-topic-section,.site-footer .wrap{width:95%}
  .site-header nav{padding-inline:2.5%}
  .home-hero{grid-template-columns:1fr;gap:20px}
  .home-hero-copy{padding:12px 0 18px}
  .home-hero-media{min-height:360px}
  .home-quick-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .home-scenarios{grid-template-columns:repeat(2,minmax(0,1fr))}
  .lio-section-children{grid-template-columns:repeat(2,minmax(0,1fr))}
  .latest-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .related-links{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media(max-width:700px){
  .site-title{padding:12px 0 10px;gap:10px}
  .brand-logo img{width:min(400px,90vw)}
  .header-season-card{gap:12px;min-height:0;padding:13px 14px;border-radius:14px}
  .header-season-icon{flex-basis:46px;width:46px;height:46px;border-radius:12px}
  .header-season-icon svg{width:32px;height:32px}
  .header-season-copy{gap:4px}
  .header-season-copy strong{font-size:17px}
  .header-season-text{display:none}
  .header-season-meta{color:transparent;font-size:0;gap:0}
  .header-season-meta b{color:var(--roof-blue-dark);font-size:11px}
  .site-header nav{gap:0;align-items:stretch;flex-wrap:nowrap;overflow-x:auto;scrollbar-width:none;-webkit-overflow-scrolling:touch}
  .site-header nav::-webkit-scrollbar{display:none}
  .site-header nav a{flex:0 0 auto;padding:14px 12px;font-size:14px}
  .collection-title{margin-top:32px;font-size:35px}
  .page{margin-top:34px;margin-bottom:54px}
  .page>h1{font-size:36px}
  .page>.content{font-size:17px}
  .home-hero{margin-top:30px}
  .home-hero h1{font-size:40px}
  .home-lead{font-size:17px}
  .home-hero-media{min-height:260px;border-radius:18px}
  .home-actions{display:grid;grid-template-columns:1fr}
  .home-btn{width:100%}
  .home-section{margin:52px auto}
  .home-section-head,.roof-topic-head{align-items:flex-start;flex-direction:column;gap:12px}
  .home-quick-grid,.home-scenarios{grid-template-columns:1fr}
  .home-all-materials{margin:52px auto 60px;padding:26px;align-items:flex-start;flex-direction:column}
  .roof-latest-section{padding:20px}
  .roof-topic-section{margin:42px auto 58px}
  .lio-section-page{margin-top:28px;margin-bottom:52px}
  .lio-section-intro{font-size:17px}
  .lio-section-children,.latest-grid{grid-template-columns:1fr;gap:18px}
  .related-links{grid-template-columns:1fr;gap:12px}
  .page>.content .related-link{min-height:0}
  .lio-section-child h2,.lio-section-child h3{font-size:22px}
  .site-footer .wrap{align-items:flex-start;flex-direction:column;gap:16px}
  .footer-logo{width:min(420px,100%)}
  .footer-copy{text-align:left}
}
@media(prefers-reduced-motion:reduce){
  *{scroll-behavior:auto!important}
  .lio-section-child-image img{transition:none}
  .lio-section-child:hover .lio-section-child-image img{transform:none}
}