:root{
    --blue:#0a4e87;
    --blue-dark:#07365f;
    --blue-soft:#eef6fc;
    --text:#1f2937;
    --muted:#5d6875;
    --border:#d9e3ec;
    --white:#ffffff;
    --max:1120px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
    margin:0;
    font-family:Arial,Helvetica,sans-serif;
    color:var(--text);
    background:#fff;
    line-height:1.65;
    font-size:17px;
}
a{color:#075da4;text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;height:auto;display:block}
.skip-link{position:absolute;left:-9999px;top:auto}
.skip-link:focus{left:16px;top:12px;background:#fff;padding:10px 14px;z-index:99;border:2px solid var(--blue)}
.site-header{border-bottom:1px solid var(--border);background:#fff}
.topbar{max-width:var(--max);margin:auto;padding:14px 20px 10px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.brand{font-weight:800;font-size:24px;color:var(--blue-dark);letter-spacing:-.4px}
.brand span{color:#0b7acb}
.tagline{font-size:13px;color:var(--muted);text-align:right}
.nav-wrap{background:var(--blue-dark)}
.main-nav{max-width:var(--max);margin:auto;padding:0 20px;display:flex;flex-wrap:wrap;gap:0}
.main-nav a{color:#fff;padding:11px 13px;display:block;font-size:14px;font-weight:700}
.main-nav a:hover{background:rgba(255,255,255,.12);text-decoration:none}
.hero{background:linear-gradient(180deg,#f6fbff,#fff)}
.hero-inner{max-width:var(--max);margin:auto;padding:34px 20px 28px;display:grid;grid-template-columns:1.05fr .95fr;gap:34px;align-items:center}
.hero h1{font-size:clamp(32px,5vw,52px);line-height:1.08;margin:0 0 16px;color:var(--blue-dark);letter-spacing:-1px}
.hero p{font-size:19px;color:#3f4c59;margin:0 0 16px}
.hero img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:16px;box-shadow:0 12px 32px rgba(0,45,84,.16)}
.breadcrumb{max-width:var(--max);margin:0 auto;padding:18px 20px 0;font-size:14px;color:var(--muted)}
.breadcrumb a{color:#436a88}
.layout{max-width:var(--max);margin:auto;padding:20px;display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:34px}
article h2{font-size:30px;line-height:1.2;color:var(--blue-dark);margin:36px 0 12px}
article h3{font-size:23px;line-height:1.3;color:#0b568e;margin:28px 0 10px}
article p{margin:0 0 18px}
article ul{padding-left:22px;margin:0 0 22px}
article li{margin:8px 0}
.notice{background:var(--blue-soft);border-left:5px solid #0b7acb;padding:17px 18px;border-radius:8px;margin:24px 0}
.checklist{display:grid;grid-template-columns:1fr 1fr;gap:10px 20px;list-style:none;padding:0}
.checklist li{padding-left:24px;position:relative}
.checklist li:before{content:'✓';position:absolute;left:0;color:#087a54;font-weight:bold}
.sidebar{align-self:start;position:sticky;top:16px}
.side-card{border:1px solid var(--border);border-radius:12px;padding:18px;margin-bottom:18px;background:#fff}
.side-card h2{font-size:19px;margin:0 0 12px;color:var(--blue-dark)}
.side-card ul{list-style:none;margin:0;padding:0}
.side-card li{border-top:1px solid #edf1f4;padding:9px 0}
.side-card li:first-child{border-top:0}
.related{margin-top:38px;border-top:1px solid var(--border);padding-top:24px}
.related-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.related a{border:1px solid var(--border);border-radius:10px;padding:14px;background:#fbfdff;font-weight:700}
.faq details{border:1px solid var(--border);border-radius:10px;padding:12px 14px;margin:10px 0;background:#fff}
.faq summary{font-weight:700;cursor:pointer;color:var(--blue-dark)}
.site-footer{background:#062e50;color:#dce9f4;margin-top:42px}
.footer-inner{max-width:var(--max);margin:auto;padding:30px 20px;display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:28px}
.site-footer a{color:#fff}
.site-footer h2{font-size:18px;color:#fff;margin-top:0}
.site-footer ul{list-style:none;margin:0;padding:0}
.site-footer li{margin:7px 0}
.copyright{border-top:1px solid rgba(255,255,255,.15);max-width:var(--max);margin:auto;padding:14px 20px 22px;font-size:13px;color:#b9ccdc}
.home-grid{max-width:var(--max);margin:auto;padding:34px 20px;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.home-card{border:1px solid var(--border);border-radius:12px;padding:20px;background:#fff}
.home-card h2{font-size:21px;margin:0 0 9px;color:var(--blue-dark)}
.home-card p{font-size:15px;color:var(--muted);margin:0 0 12px}
.home-card a{font-weight:700}
.small{font-size:14px;color:var(--muted)}
@media(max-width:900px){
    .hero-inner{grid-template-columns:1fr}
    .layout{grid-template-columns:1fr}
    .sidebar{position:static}
    .home-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:600px){
    body{font-size:16px}
    .topbar{align-items:flex-start;flex-direction:column}
    .tagline{text-align:left}
    .main-nav a{font-size:13px;padding:10px}
    .hero-inner{padding-top:24px}
    .hero h1{font-size:34px}
    .checklist,.related-grid,.home-grid,.footer-inner{grid-template-columns:1fr}
}