*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{font-size:16px;scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;background:#f8f9fb;color:#1a1a2e;line-height:1.7}
a{color:#2a7ae2;text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;height:auto;display:block}

.container{max-width:1100px;margin:0 auto;padding:0 20px}

.site-header{background:#fff;border-bottom:1px solid #e2e8f0;position:sticky;top:0;z-index:100}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:60px;gap:16px}
.site-logo{display:flex;align-items:center;gap:8px;font-weight:700;font-size:1.1rem;color:#1a1a2e;white-space:nowrap}
.site-logo svg{flex-shrink:0}
.site-nav{display:flex;align-items:center;gap:4px;flex-wrap:wrap}
.site-nav a{padding:6px 12px;border-radius:6px;font-size:.9rem;color:#334155;transition:background .15s,color .15s}
.site-nav a:hover,.site-nav a.active{background:#eff6ff;color:#2a7ae2;text-decoration:none}
.nav-toggle{display:none;flex-direction:column;justify-content:space-between;width:26px;height:20px;background:none;border:none;cursor:pointer;padding:0}
.nav-toggle span{display:block;height:2px;background:#334155;border-radius:2px;transition:all .2s}

.hero{background:linear-gradient(135deg,#1e3a5f 0%,#2a7ae2 100%);color:#fff;padding:72px 0 60px}
.hero h1{font-size:clamp(1.8rem,4vw,2.8rem);font-weight:800;line-height:1.2;margin-bottom:18px;max-width:680px}
.hero p{font-size:1.1rem;max-width:560px;opacity:.9;margin-bottom:28px}
.hero-meta{font-size:.85rem;opacity:.7}

.section{padding:56px 0}
.section-title{font-size:1.6rem;font-weight:700;margin-bottom:32px;color:#1a1a2e;border-left:4px solid #2a7ae2;padding-left:12px}

.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:24px}
.card{background:#fff;border-radius:12px;overflow:hidden;box-shadow:0 1px 4px rgba(0,0,0,.08);transition:box-shadow .2s}
.card:hover{box-shadow:0 4px 16px rgba(0,0,0,.12)}
.card-img{aspect-ratio:16/9;overflow:hidden;background:#e2e8f0}
.card-img img{width:100%;height:100%;object-fit:cover;transition:transform .3s}
.card:hover .card-img img{transform:scale(1.04)}
.card-body{padding:20px}
.card-tag{display:inline-block;font-size:.75rem;font-weight:600;text-transform:uppercase;letter-spacing:.05em;color:#2a7ae2;margin-bottom:8px}
.card-title{font-size:1.05rem;font-weight:700;margin-bottom:8px;line-height:1.4;color:#1a1a2e}
.card-excerpt{font-size:.9rem;color:#475569;line-height:1.6;margin-bottom:14px}
.card-meta{font-size:.8rem;color:#94a3b8}
.card a.read-more{font-size:.85rem;font-weight:600;color:#2a7ae2}

.article-header{background:#fff;border-bottom:1px solid #e2e8f0;padding:40px 0 32px}
.article-header h1{font-size:clamp(1.5rem,3.5vw,2.4rem);font-weight:800;line-height:1.25;margin-bottom:14px;max-width:800px}
.article-meta{font-size:.85rem;color:#64748b;display:flex;flex-wrap:wrap;gap:12px;align-items:center}
.article-meta span{display:flex;align-items:center;gap:4px}
.article-body{padding:48px 0}
.article-content{max-width:780px}
.article-content h2{font-size:1.4rem;font-weight:700;margin:36px 0 14px;color:#1a1a2e;padding-bottom:6px;border-bottom:2px solid #eff6ff}
.article-content h3{font-size:1.1rem;font-weight:700;margin:24px 0 10px;color:#334155}
.article-content p{margin-bottom:18px;color:#334155}
.article-content ul,.article-content ol{margin:0 0 18px 24px}
.article-content li{margin-bottom:8px;color:#334155}
.article-content .article-img{margin:28px 0;border-radius:10px;overflow:hidden;box-shadow:0 2px 8px rgba(0,0,0,.1)}
.article-content blockquote{border-left:4px solid #2a7ae2;padding:14px 20px;background:#eff6ff;border-radius:0 8px 8px 0;margin:24px 0;font-style:italic;color:#334155}
.article-content a{color:#2a7ae2;font-weight:500}
.article-content table{width:100%;border-collapse:collapse;margin-bottom:20px;font-size:.9rem}
.article-content th{background:#1e3a5f;color:#fff;padding:10px 14px;text-align:left}
.article-content td{padding:9px 14px;border-bottom:1px solid #e2e8f0;color:#334155}
.article-content tr:nth-child(even) td{background:#f8f9fb}

.aside-box{background:#fff;border:1px solid #e2e8f0;border-radius:10px;padding:20px;margin-bottom:20px}
.aside-box h4{font-size:1rem;font-weight:700;margin-bottom:12px;color:#1a1a2e}
.aside-box ul{list-style:none;padding:0}
.aside-box ul li{padding:6px 0;border-bottom:1px solid #f1f5f9;font-size:.88rem}
.aside-box ul li:last-child{border-bottom:none}
.aside-box ul li a{color:#2a7ae2}

.layout-with-aside{display:grid;grid-template-columns:1fr 280px;gap:40px;align-items:start}
@media(max-width:800px){.layout-with-aside{grid-template-columns:1fr}}

.contact-form{background:#fff;border-radius:12px;padding:32px;box-shadow:0 1px 4px rgba(0,0,0,.08);max-width:560px}
.contact-form h2{font-size:1.3rem;font-weight:700;margin-bottom:20px;color:#1a1a2e}
.form-group{margin-bottom:18px}
.form-group label{display:block;font-size:.88rem;font-weight:600;color:#334155;margin-bottom:6px}
.form-group input,.form-group textarea{width:100%;border:1px solid #cbd5e1;border-radius:8px;padding:10px 14px;font-size:.95rem;color:#1a1a2e;background:#f8f9fb;outline:none;transition:border .15s}
.form-group input:focus,.form-group textarea:focus{border-color:#2a7ae2;background:#fff}
.form-group textarea{resize:vertical;min-height:100px}
.btn{padding:10px 22px;border-radius:8px;font-size:.9rem;font-weight:600;cursor:pointer;border:none;transition:background .15s}
.btn-primary{background:#2a7ae2;color:#fff}
.btn-primary:hover{background:#1e63c3}
.btn-secondary{background:#e2e8f0;color:#334155}
.btn-secondary:hover{background:#cbd5e1}

.page-header{background:#fff;border-bottom:1px solid #e2e8f0;padding:40px 0 28px}
.page-header h1{font-size:clamp(1.4rem,3vw,2rem);font-weight:800;color:#1a1a2e}
.page-content{padding:48px 0;max-width:780px}
.page-content h2{font-size:1.2rem;font-weight:700;margin:30px 0 10px;color:#1a1a2e}
.page-content p,.page-content li{color:#334155;font-size:.97rem;margin-bottom:14px}
.page-content ul{margin-left:20px;margin-bottom:16px}

.cookie-banner{position:fixed;bottom:0;left:0;right:0;background:#1e3a5f;color:#e2e8f0;padding:16px 20px;z-index:999;display:none}
.cookie-banner.visible{display:block}
.cookie-inner{max-width:1100px;margin:0 auto;display:flex;align-items:center;gap:20px;flex-wrap:wrap;justify-content:space-between}
.cookie-inner p{font-size:.88rem;flex:1;min-width:200px}
.cookie-inner a{color:#93c5fd}
.cookie-actions{display:flex;gap:10px;flex-shrink:0}

.related-articles{padding:40px 0}
.related-articles .card-grid{grid-template-columns:repeat(auto-fill,minmax(240px,1fr))}

.breadcrumb{font-size:.83rem;color:#64748b;margin-bottom:12px}
.breadcrumb a{color:#2a7ae2}
.breadcrumb span{margin:0 6px;color:#94a3b8}

.tag-list{display:flex;flex-wrap:wrap;gap:8px;margin:16px 0}
.tag{background:#eff6ff;color:#2a7ae2;padding:4px 12px;border-radius:99px;font-size:.8rem;font-weight:600}

@media(max-width:640px){
    .site-nav{display:none;flex-direction:column;position:absolute;top:60px;left:0;right:0;background:#fff;border-bottom:1px solid #e2e8f0;padding:12px 0;gap:0;width:100%}
    .site-nav.open{display:flex}
    .site-nav a{border-radius:0;padding:12px 20px;width:100%}
    .nav-toggle{display:flex}
    .hero{padding:48px 0 40px}
    .section{padding:36px 0}
}