:root{--bts-navy:#062b57;--bts-blue:#0875e1;--bts-cyan:#27b9f4;--bts-ink:#12243a;--bts-muted:#52647b;--bts-pale:#f1f7fd;--bts-line:#dce8f5}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:#fff;color:var(--bts-ink);font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}
a{transition:color .18s ease,background .18s ease,transform .18s ease}
.wp-site-blocks{overflow:hidden}
.bts-site-header{position:relative;z-index:10;background:#fff;border-bottom:1px solid #e8eef5;box-shadow:0 3px 18px rgba(8,35,67,.035)}
.bts-header-inner{max-width:1320px;margin:auto;padding:18px 34px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.bts-brand{display:flex;align-items:center;gap:14px;color:var(--bts-navy);text-decoration:none}
.bts-brand-mark{width:54px;height:48px;display:grid;place-items:center;color:var(--bts-blue)}
.bts-brand-mark svg{width:54px;height:48px;display:block}
.bts-brand-name{font-size:clamp(1.35rem,2.4vw,2rem);font-weight:850;line-height:1.05;letter-spacing:-.045em}
.bts-brand-tagline{font-size:.98rem;font-weight:550;line-height:1.3;margin-top:5px;color:var(--bts-navy)}
.bts-header-links{display:flex;align-items:center;gap:26px}
.bts-header-links a{color:var(--bts-navy);font-weight:650;text-decoration:none}
.bts-header-links a:hover{color:var(--bts-blue)}
.bts-header-search{width:44px;height:44px;border-radius:50%;display:grid;place-items:center;background:var(--bts-pale);color:var(--bts-navy);font-size:1.2rem}
.bts-mobile-menu{display:none}
.bts-hero{position:relative;isolation:isolate;overflow:hidden;background:radial-gradient(circle at 88% 45%,rgba(9,117,225,.48),transparent 27%),linear-gradient(115deg,#041f43 0%,#062b57 55%,#0b3e78 100%);color:#fff}
.bts-hero:before{content:"";position:absolute;z-index:-1;width:430px;height:430px;border:2px solid rgba(39,185,244,.58);border-radius:50%;right:-110px;top:50%;transform:translateY(-50%);box-shadow:0 0 0 52px rgba(39,185,244,.045),0 0 0 105px rgba(39,185,244,.035)}
.bts-hero:after{content:"";position:absolute;z-index:-1;width:190px;height:190px;border:2px solid rgba(39,185,244,.5);border-radius:50%;right:28px;top:28%;transform:rotate(32deg) scaleX(1.8)}
.bts-hero-inner{max-width:1320px;margin:auto;padding:76px 6.3% 78px;position:relative}
.bts-eyebrow{display:flex;align-items:center;gap:14px;color:#e6f3ff;font-size:clamp(.9rem,1.5vw,1.12rem);font-weight:750;letter-spacing:.035em;text-transform:uppercase;margin:0 0 26px}
.bts-eyebrow:after{content:"";display:block;width:70px;height:4px;border-radius:9px;background:var(--bts-cyan)}
.bts-hero h1{max-width:780px;color:#fff;font-size:clamp(2.6rem,5.7vw,5rem);line-height:1.06;letter-spacing:-.045em;font-weight:850;margin:0 0 26px}
.bts-hero-copy{max-width:720px;color:#e8f3ff;font-size:clamp(1.12rem,2.2vw,1.8rem);line-height:1.55;margin:0 0 36px}
.bts-search-form{max-width:900px;display:flex;gap:0;background:#fff;border:3px solid rgba(255,255,255,.88);border-radius:19px;padding:5px;box-shadow:0 14px 36px rgba(0,0,0,.16)}
.bts-search-form input[type=search]{min-width:0;flex:1;border:0!important;outline:0!important;box-shadow:none!important;padding:17px 22px;font:inherit;font-size:clamp(1rem,1.8vw,1.35rem);color:var(--bts-ink);background:#fff;border-radius:14px}
.bts-search-form input::placeholder{color:#617087;opacity:1}
.bts-search-form button{flex:0 0 112px;border:0;border-radius:14px;background:linear-gradient(135deg,#0875e1,#0758b4);color:#fff;font-size:1.3rem;font-weight:750;cursor:pointer}
.bts-search-form button:hover{background:#064b98}
.bts-explore{max-width:1320px;margin:0 auto;padding:68px 34px 76px}
.bts-section-heading{font-size:clamp(1.8rem,3.4vw,3rem);line-height:1.16;letter-spacing:-.035em;color:var(--bts-navy);font-weight:850;margin:0 0 16px}
.bts-section-intro{font-size:clamp(1.05rem,1.7vw,1.4rem);line-height:1.55;color:var(--bts-muted);max-width:850px;margin:0 0 38px}
.bts-category-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}
.bts-category-card{min-height:150px;padding:26px 30px;border:1px solid var(--bts-line);border-radius:23px;background:linear-gradient(135deg,#f7fbff,#eef6ff);display:flex;align-items:center;gap:22px;text-decoration:none;color:var(--bts-navy);box-shadow:0 8px 24px rgba(13,66,120,.055)}
.bts-category-card:hover{transform:translateY(-3px);border-color:#a8cff8;box-shadow:0 14px 30px rgba(13,66,120,.11)}
.bts-category-icon{width:66px;height:66px;flex:0 0 66px;display:grid;place-items:center;color:var(--bts-blue)}
.bts-category-icon svg{width:58px;height:58px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.bts-category-title{font-size:clamp(1.2rem,2vw,1.65rem);font-weight:820;line-height:1.2;margin:0 0 7px}
.bts-category-desc{font-size:1.05rem;color:#334b68;margin:0}
.bts-card-arrow{margin-left:auto;color:#60758f;font-size:1.8rem}
.bts-latest{background:#f7faff;padding:64px 34px}
.bts-latest-inner{max-width:1320px;margin:auto}
.bts-footer{background:#061f40;color:#dcecff;padding:42px 34px}
.bts-footer-inner{max-width:1320px;margin:auto;display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap}
.bts-footer a{color:#fff}
.entry-content,.wp-block-post-content{line-height:1.8}
.wp-block-button__link{border-radius:12px}
@media(max-width:760px){
 .bts-header-inner{padding:13px 18px;min-height:78px;gap:12px}
 .bts-brand{gap:9px}
 .bts-brand-mark,.bts-brand-mark svg{width:43px;height:40px}
 .bts-brand-name{font-size:1.28rem}
 .bts-brand-tagline{font-size:.78rem;margin-top:3px}
 .bts-header-links{display:none}
 .bts-mobile-menu{display:block;color:var(--bts-navy);font-size:1.9rem;text-decoration:none;line-height:1;padding:8px}
 .bts-hero:before{width:260px;height:260px;right:-170px;top:24%}
 .bts-hero:after{width:130px;height:130px;right:-48px;top:20%}
 .bts-hero-inner{padding:54px 22px 48px}
 .bts-eyebrow{font-size:.76rem;gap:9px;margin-bottom:22px;max-width:90%;flex-wrap:wrap}
 .bts-eyebrow:after{width:44px;height:3px}
 .bts-hero h1{font-size:clamp(2.25rem,10vw,3.35rem);line-height:1.08;margin-bottom:20px;max-width:100%}
 .bts-hero-copy{font-size:1.08rem;line-height:1.55;margin-bottom:27px;max-width:95%}
 .bts-search-form{border-width:2px;border-radius:15px;padding:4px}
 .bts-search-form input[type=search]{padding:13px 12px;font-size:.96rem}
 .bts-search-form button{flex-basis:58px;border-radius:11px;font-size:1.1rem}
 .bts-explore{padding:46px 20px 54px}
 .bts-section-heading{font-size:1.8rem;line-height:1.2;margin-bottom:12px}
 .bts-section-intro{font-size:1rem;margin-bottom:25px}
 .bts-category-grid{grid-template-columns:1fr;gap:13px}
 .bts-category-card{min-height:112px;padding:18px 17px;border-radius:17px;gap:14px}
 .bts-category-icon{width:48px;height:48px;flex-basis:48px}
 .bts-category-icon svg{width:44px;height:44px}
 .bts-category-title{font-size:1.18rem}
 .bts-category-desc{font-size:.91rem}
 .bts-card-arrow{font-size:1.4rem}
 .bts-latest{padding:45px 20px}
 .bts-footer{padding:32px 20px}
}
@media(min-width:761px) and (max-width:1050px){
 .bts-hero-inner{padding:62px 5%}
 .bts-hero h1{max-width:680px}
 .bts-category-card{padding:22px}
}


/* v0.2.1 refinements */
.bts-brand{gap:18px;min-width:0}
.bts-brand-text{display:flex;flex-direction:column;gap:3px;min-width:0}
.bts-brand-name{display:block;white-space:nowrap}
.bts-brand-tagline{display:block;font-size:.9rem;font-weight:600;white-space:nowrap}
.bts-section-kicker{margin:0 0 10px;color:var(--bts-blue);font-size:.78rem;font-weight:850;letter-spacing:.11em}
.bts-category-copy{display:flex;flex-direction:column;gap:7px;min-width:0}
.bts-category-title{display:block;margin:0}
.bts-category-desc{display:block;line-height:1.45}
.bts-search-form input[type=search]{width:100%;min-width:0}
@media(max-width:760px){
 .bts-header-inner{gap:8px}
 .bts-brand{gap:10px;flex:1}
 .bts-brand-mark,.bts-brand-mark svg{width:40px;height:38px;flex:0 0 40px}
 .bts-brand-name{font-size:1.18rem;letter-spacing:-.04em}
 .bts-brand-tagline{font-size:.76rem;white-space:normal;line-height:1.2}
 .bts-mobile-menu{flex:0 0 auto;font-size:1.7rem}
 .bts-category-card{align-items:center}
 .bts-category-copy{gap:5px}
 .bts-category-title{font-size:1.17rem}
 .bts-category-desc{font-size:.9rem}
 .bts-search-form input[type=search]{padding:12px 10px;font-size:.88rem}
 .bts-search-form button{flex-basis:54px}
}

/* v0.2.3 – Education resource archive */
.bts-resource-archive{max-width:1240px!important;padding-left:24px!important;padding-right:24px!important}
.bts-resource-archive h1{color:var(--bts-navy);font-size:clamp(2rem,4vw,3rem);font-weight:850;letter-spacing:-.035em;margin:0 0 18px}
.bts-resource-archive .wp-block-post-template{gap:22px}
.bts-resource-card{height:100%;padding:18px;border:1px solid var(--bts-line);border-radius:18px;background:#fff;box-shadow:0 8px 24px rgba(13,66,120,.055);overflow:hidden}
.bts-resource-card .wp-block-post-featured-image{margin:0 0 15px;border-radius:12px;overflow:hidden}
.bts-resource-card .wp-block-post-title{font-size:1.22rem;line-height:1.3;color:var(--bts-navy);margin:0 0 8px}
.bts-resource-card .wp-block-post-title a{color:inherit;text-decoration:none}
.bts-resource-card .wp-block-post-excerpt{color:var(--bts-muted);font-size:.96rem;line-height:1.6}
.bts-resource-archive .wp-block-query-pagination{margin-top:32px}
.bts-resource-archive .wp-block-query-pagination a{padding:10px 14px;border-radius:10px;background:var(--bts-pale);color:var(--bts-navy);text-decoration:none}
@media(max-width:760px){.bts-resource-archive{padding-left:18px!important;padding-right:18px!important}.bts-resource-archive .wp-block-post-template{gap:14px}.bts-resource-card{padding:14px;border-radius:14px}}