.section-heading{text-align:center;margin-bottom:45px}.section-subtitle{display:block;color:#c79600;font-size:15px;font-weight:800;margin-bottom:9px;text-transform:uppercase}.section-heading h2{font-size:40px;color:#164b73;font-weight:800;margin:0}.about-section{padding:90px 0}.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:55px;align-items:center}.about-image img{width:100%;display:block;border-radius:16px;box-shadow:0 10px 25px rgba(7,27,61,.10)}.about-content h2{color:#164b73;font-size:42px;margin:0 0 18px}.about-content p{font-size:17px;line-height:1.8;color:#4d586b;margin:0 0 22px}.about-list{list-style:none;margin:0;padding:0}.about-list li{font-size:16px;margin-bottom:12px;color:#27344a}.products-section{padding:90px 0;background:#f7fbfe}.products-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}.product-card{background:#fff;padding:30px 24px;border-radius:12px;text-align:center;box-shadow:0 8px 24px rgba(7,27,61,.07);border:1px solid #e8edf4}.product-card h3{color:#164b73;font-size:20px;margin:0 0 12px}.product-card p{color:#667085;line-height:1.65;margin:0;font-size:14px}.factory-section{padding:90px 0}.factory-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}.factory-item{overflow:hidden;border-radius:14px;box-shadow:0 8px 24px rgba(7,27,61,.08)}.factory-item img{width:100%;height:280px;object-fit:cover;display:block}.site-footer{background:#061a35;color:#fff;margin-top:60px;border-top:4px solid #e8b84a}.footer-grid{width:100%;max-width:1320px;margin:0 auto;padding:65px 25px;display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:55px}.footer-col h3,.footer-col h4{color:#e8b84a}.footer-col p{line-height:1.8}.footer-col ul{list-style:none;margin:0;padding:0}.footer-col li{margin-bottom:10px}.footer-col a{color:rgba(255,255,255,.88);text-decoration:none}.footer-bottom{text-align:center;padding:18px 20px;border-top:1px solid rgba(255,255,255,.15);font-size:14px;color:#cbd5e1}.single-post-page,.archive-page{padding:60px 0}.single-post{max-width:1400px;margin:auto}.single-title{font-size:42px;line-height:1.3;color:#164b73}.single-content{font-size:18px;line-height:1.85;color:#303a4b}.single-content h2,.single-content h3{color:#164b73}.single-thumbnail img{max-width:100%;height:auto;border-radius:14px}.archive-header{text-align:center;margin-bottom:45px}.archive-header h1{font-size:44px;color:#164b73}.archive-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:25px}.archive-card{background:#fff;border:1px solid #e6ebf2;border-radius:14px;overflow:hidden;box-shadow:0 8px 24px rgba(7,27,61,.07)}
@media(max-width:900px){.about-grid{grid-template-columns:1fr}.products-grid{grid-template-columns:repeat(2,1fr)}.factory-grid{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:1fr 1fr}.archive-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:600px){.section-heading h2{font-size:30px}.about-section,.products-section,.factory-section{padding:60px 0}.about-content h2{font-size:32px}.products-grid,.factory-grid,.archive-grid{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr;padding:50px 20px}}

/* =========================================================
   APT CCTV V4 - TIÊU ĐỀ NHẸ HƠN / NỀN THOÁNG HƠN
   ========================================================= */
.section-heading{margin-bottom:38px}
.section-subtitle{color:#b88716;font-size:14px;font-weight:700;letter-spacing:.15px}
.section-heading h2{font-family:"Times New Roman", Times, serif;font-size:36px;line-height:1.22;color:#173b62;font-weight:600;letter-spacing:0;margin:0 auto;max-width:1000px}
.about-section{padding:78px 0}
.about-content h2{font-size:36px;line-height:1.25;color:#173b62;font-weight:600;letter-spacing:0}
.about-content p{font-size:16px;line-height:1.75;color:#59687a}
.about-list li{font-size:15px;color:#43546a}
.products-section{padding:78px 0;background:#f7f9fc}
.products-grid{gap:20px}
.product-card{padding:27px 22px;border-radius:12px;box-shadow:0 6px 18px rgba(28,58,92,.045);border:1px solid #e8edf3}
.product-card h3{color:#173b62;font-size:19px;font-weight:600;line-height:1.35;margin-bottom:10px}
.product-card p{color:#68778b;font-size:14px;line-height:1.6}
.factory-section{padding:78px 0}
.factory-item{border-radius:12px;box-shadow:0 6px 18px rgba(28,58,92,.055)}
.site-footer{background:#2b6f9f;margin-top:48px;border-top:3px solid #edc34a}
.footer-grid{padding:55px 25px;gap:45px}
.footer-col h3,.footer-col h4{color:#f1c44d;font-weight:600}
@media(max-width:600px){.section-heading{margin-bottom:30px}.section-heading h2{font-size:29px;line-height:1.25;font-weight:600}.section-subtitle{font-size:13px}.about-section,.products-section,.factory-section{padding:55px 0}.about-content h2{font-size:29px}.product-card h3{font-size:18px}}

/* APT CCTV V8 - footer logo */
.site-footer .footer-brand{display:flex;flex-direction:column;align-items:flex-start}
.site-footer .footer-logo{display:block;width:155px;height:auto;max-height:82px;object-fit:contain;object-position:left center;margin:0 0 16px}
.site-footer .footer-brand h3{margin:0 0 14px}
@media (max-width:600px){.site-footer .footer-logo{width:135px;max-height:72px;margin-bottom:12px}}

/* APT CCTV V20 - image cards + editable placeholder links */
.product-card { padding:0; overflow:hidden; text-align:left; }
.product-card-link, .factory-item-link { display:block; color:inherit; text-decoration:none; height:100%; }
.product-card-link img { width:100%; height:155px; object-fit:contain; display:block; background:#fff; padding:12px 18px 0; }
.product-card-body { padding:18px 20px 22px; text-align:center; }
.product-card-body h3 { margin:0 0 9px; }
.product-card-body p { margin:0; }
.product-card-link:hover h3, .factory-item-link:hover strong { color:#c79600; }
.factory-item { background:#fff; }
.factory-item-link img { width:100%; height:280px; object-fit:cover; display:block; }
.factory-content { padding:18px 20px 20px; background:#fff; }
.factory-content strong { display:block; color:#173b62; font-size:20px; font-weight:600; line-height:1.35; margin-bottom:8px; }
.factory-content p { color:#59687a; margin:0; line-height:1.65; font-size:15px; }
@media(max-width:900px){ .product-card-link img { height:145px; } .factory-item-link img { height:240px; } }
@media(max-width:600px){ .products-grid, .factory-grid { grid-template-columns:repeat(2, minmax(0,1fr)) !important; gap:12px !important; } .product-card-link img { height:115px; padding:8px 8px 0; } .product-card-body { padding:11px 9px 13px; } .product-card-body h3 { font-size:16px; line-height:1.25; margin-bottom:6px; } .product-card-body p { font-size:12px; line-height:1.45; } .factory-item-link img { height:145px; } .factory-content { padding:11px 10px 13px; } .factory-content strong { font-size:16px; line-height:1.25; margin-bottom:5px; } .factory-content p { font-size:12px; line-height:1.45; } }

/* V21 - product images normalized from customer-provided assets */
.products-section .products-grid{align-items:stretch}
.products-section .product-card{height:100%;position:relative;overflow:hidden}
.products-section .product-card-link img{width:100%;height:190px;object-fit:contain;object-position:center;background:#fff;padding:0;display:block}
.products-section .product-card-body{min-height:132px;padding:16px 20px 24px;position:relative;text-align:center}
.products-section .product-card-body h3{margin:0 0 9px;color:#173b62;font-size:19px;line-height:1.35}
.products-section .product-card-body p{margin:0;color:#68778b;font-size:14px;line-height:1.6;padding:0 8px}
.products-section .product-arrow{display:inline-flex;width:30px;height:30px;border-radius:50%;align-items:center;justify-content:center;background:#d9aa20;color:#fff;font-size:20px;line-height:1;position:absolute;right:16px;bottom:16px}
@media(max-width:900px){.products-section .product-card-link img{height:165px}.products-section .product-card-body{min-height:125px}}
@media(max-width:600px){.products-section .products-grid{grid-template-columns:repeat(2,minmax(0,1fr)) !important;gap:12px !important}.products-section .product-card-link img{height:125px}.products-section .product-card-body{min-height:108px;padding:10px 8px 16px}.products-section .product-card-body h3{font-size:16px;line-height:1.25;margin-bottom:6px}.products-section .product-card-body p{font-size:12px;line-height:1.42;padding:0 2px}.products-section .product-arrow{width:24px;height:24px;right:8px;bottom:8px;font-size:16px}}

/* APT CCTV V29 — full-width article presentation */
.single-post-page .container,
.archive-page .container{
    width:100% !important;
    max-width:1400px !important;
    box-sizing:border-box !important;
}
.single-post{
    width:100% !important;
    max-width:1400px !important;
}
.single-header{
    max-width:1200px;
    margin:0 auto 22px;
}
.single-title{
    font-size:44px;
    line-height:1.25;
    margin:0 0 12px;
}
.single-thumbnail{
    width:100%;
    max-width:1400px;
    margin:0 auto 35px;
}
.single-thumbnail img{
    width:100% !important;
    max-width:1400px !important;
    height:auto !important;
    display:block;
    border-radius:12px;
}
.single-content{
    max-width:1200px;
    margin:0 auto;
    font-size:18px;
    line-height:1.85;
}
@media(max-width:600px){
    .single-post-page{padding:35px 0}
    .single-title{font-size:30px}
    .single-content{font-size:17px}
    .single-header,.single-content{max-width:none}
}