*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}:root{--bg:#F4F5F8;--surface:#fff;--border:#DDE2EC;--text:#1A2435;--text2:#5A6880;--text3:#66758B;--accent:#0055AA;--accent-lt:#E6F1FB;--accent-light:#3EACF2;--brand-green:#6BA82E;--radius:8px}html{font-size:15px;scroll-behavior:smooth}body{font-family:'Inter',system-ui,sans-serif;background:var(--bg);color:var(--text);line-height:1.68}.skip-link{position:absolute;left:-9999px;top:0;z-index:200;background:var(--accent);color:#fff;font-weight:600;padding:10px 18px;border-radius:0 0 var(--radius) 0;text-decoration:none;font-size:.9rem}.skip-link:focus{left:0}.site-header{background:var(--surface);border-bottom:1px solid var(--border);position:relative;padding:0 20px}.site-header::after{content:'';position:absolute;left:0;right:0;bottom:-2px;height:2px;background:linear-gradient(90deg,var(--accent-light),var(--accent),var(--brand-green))}.header-inner{max-width:900px;margin:0 auto;display:flex;align-items:center;min-height:60px;gap:20px}.logo-img{height:36px;width:auto;display:block}.header-nav{margin-left:auto;display:flex;gap:18px;flex-wrap:wrap}.header-nav a{font-size:.85rem;font-weight:500;color:var(--text2);text-decoration:none}.header-nav a:hover{color:var(--accent)}main{max-width:900px;margin:28px auto 60px;padding:0 20px}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:34px 40px;margin-bottom:20px}h1{font-size:1.65rem;letter-spacing:-.02em;margin-bottom:10px;line-height:1.3}.lead{color:var(--text2);font-size:1rem;margin-bottom:6px}.updated,.dynamic-note{color:var(--text3);font-size:.85rem;margin-bottom:20px}h2{font-size:1.2rem;margin:24px 0 10px}h3{font-size:1rem;margin:18px 0 7px}p{margin-bottom:12px;color:var(--text2)}ul{margin:0 0 12px 22px;color:var(--text2)}li{margin-bottom:6px}a{color:var(--accent)}strong{color:var(--text)}.cta{display:inline-block;background:var(--accent);color:#fff;font-weight:600;font-size:.92rem;padding:11px 22px;border-radius:var(--radius);text-decoration:none;margin:6px 0 4px}.cta:hover{background:#00468c}.course-list{list-style:none;margin:14px 0 4px}.course-list li{background:var(--bg);border:1px solid var(--border);border-left:4px solid var(--accent-light);border-radius:var(--radius);padding:12px 16px;margin-bottom:9px}.course-list li:nth-child(even){border-left-color:#527F1F}.course-list a{font-weight:600;font-size:.93rem;text-decoration:none}.course-list a:hover{text-decoration:underline}.course-list .meta{display:block;font-size:.78rem;color:var(--text3);margin-top:3px}.course-actions{display:flex;gap:10px;flex-wrap:wrap;margin:12px 0 18px}.course-actions a{border:1px solid var(--border);background:var(--surface);border-radius:999px;padding:8px 13px;text-decoration:none;font-weight:600;font-size:.88rem;color:var(--accent)}.course-actions a:hover{background:var(--bg)}.related{display:flex;flex-wrap:wrap;gap:8px;margin-top:8px}.related a{font-size:.82rem;font-weight:500;background:var(--surface);border:1px solid var(--border);border-radius:20px;padding:5px 13px;text-decoration:none}.related a:hover{border-color:var(--accent-light);background:var(--accent-lt)}.crumbs{font-size:.82rem;color:var(--text3);margin-bottom:18px}.crumbs a{color:var(--accent);text-decoration:none;font-weight:500}.crumbs .div{margin:0 7px;color:var(--border)}.mini-sub{background:var(--accent-lt);border:1px solid var(--border);border-radius:var(--radius);padding:16px 18px;margin:26px 0 6px}.mini-sub h3{font-size:1rem;margin:0 0 3px;color:var(--text)}.mini-sub .ms-sub{font-size:.82rem;color:var(--text2);margin:0 0 11px}.mini-sub-form{display:flex;gap:8px;flex-wrap:wrap}.mini-sub-form input[type=email]{flex:1;min-width:190px;font-family:inherit;font-size:.9rem;padding:9px 12px;border:1px solid var(--border);border-radius:6px;color:var(--text);background:var(--surface)}.mini-sub-form button{font-family:inherit;font-size:.85rem;font-weight:600;padding:9px 16px;border:none;border-radius:6px;background:var(--accent);color:#fff;cursor:pointer}.mini-sub-msg{font-size:.8rem;margin:7px 0 0}.mini-sub-msg.ok{color:#3F6B18}.mini-sub-msg.err{color:#B23B3B}.explore-band{background:var(--surface);border-top:1px solid var(--border);margin-top:44px;padding:34px 20px 30px;position:relative}.explore-band::before{content:'';position:absolute;top:-2px;left:0;right:0;height:2px;background:linear-gradient(90deg,var(--accent-light),var(--accent),var(--brand-green))}.explore-inner{max-width:1100px;margin:0 auto}.explore-cta{font-size:1.05rem;font-weight:600;color:var(--text);max-width:760px;line-height:1.5;margin:0 0 22px}.explore-cols{display:grid;grid-template-columns:repeat(4,1fr);gap:26px}.explore-col h3{font-size:.8rem;text-transform:uppercase;letter-spacing:.05em;color:var(--text3);margin:0 0 10px;font-weight:600}.explore-col p{font-size:.85rem;color:var(--text2);margin:0 0 8px;line-height:1.5}.explore-col a{display:block;font-size:.86rem;color:var(--accent);text-decoration:none;margin-bottom:6px;font-weight:500}.explore-col a:hover{text-decoration:underline}footer{max-width:900px;margin:0 auto;padding:24px 20px;color:var(--text3);font-size:.8rem;border-top:1px solid var(--border)}footer a{color:var(--text3);text-decoration:underline}footer .sep{margin:0 6px}@media(max-width:760px){.explore-cols{grid-template-columns:1fr 1fr}.card{padding:28px 24px}}@media(max-width:520px){.explore-cols{grid-template-columns:1fr}.header-nav{display:none}}

/* ---- author byline ---- */
.byline{display:block;line-height:1.5;border-left:3px solid var(--accent);background:var(--bg);border-radius:0 6px 6px 0;padding:9px 13px;margin:4px 0 18px;font-size:.83rem;color:var(--text2)}
.byline strong{color:var(--text);font-weight:600}
.byline a{color:var(--accent);text-decoration:none;font-weight:500;white-space:nowrap}
.byline a:hover{text-decoration:underline}

/* ---- ad containers ---- */
.ad-incontent,.ad-prefooter{margin:26px auto;text-align:center;max-width:900px}
.ad-prefooter{margin:40px auto -6px;padding:0 20px}

/* ---- mobile ergonomics (2026-07): prevent iOS input auto-zoom, enlarge tap targets ---- */
@media (max-width:768px){
  input, select, textarea{font-size:16px !important}
  .filter-clear{padding:9px 12px !important}
  .drawer-close{padding:8px 12px !important}
  .crumbs a{display:inline-block;padding:6px 2px}
}
.ad-label{display:block;margin:0 0 7px;font-size:.65rem;line-height:1;text-transform:uppercase;letter-spacing:.08em;color:var(--text3)}