:root{--navy:#0B3A5B;--blue:#1B8FC4;--soft:#F3F5F7;--line:#E2E7EB;--ink:#1A2733;--mute:#5E6C78;--white:#fff;--r:14px}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:"Segoe UI",system-ui,-apple-system,Roboto,Arial,sans-serif;color:var(--ink);background:#fff;line-height:1.6}
a{color:inherit;text-decoration:none}img{max-width:100%;display:block}
.wrap{max-width:1160px;margin:0 auto;padding:0 20px}
section{padding:56px 0}
h1,h2,h3{line-height:1.25;color:var(--navy)}
h1{font-size:clamp(1.7rem,3.4vw,2.4rem)}
h2{font-size:clamp(1.4rem,2.6vw,1.9rem);margin-bottom:8px}
.sub{color:var(--mute);margin-bottom:28px;max-width:680px}
.ph{color:#B26B00;background:#FFF4E0;border-radius:4px;padding:0 5px;font-size:.9em}
.btn{display:inline-block;padding:13px 24px;border-radius:999px;font-weight:600;border:2px solid var(--navy);transition:.2s;cursor:pointer;font-size:1rem;background:none;color:var(--navy);text-align:center;font-family:inherit}
.btn.pri{background:var(--navy);color:#fff}.btn.pri:hover{background:var(--blue);border-color:var(--blue)}
.btn.sec:hover{background:var(--navy);color:#fff}
.btn.shop{border-color:var(--line);color:var(--ink);font-weight:500}.btn.shop:hover{border-color:var(--navy)}
.btn.block{display:block;width:100%}
.mock{background:#FFF4E0;color:#7A4A00;text-align:center;font-size:.82rem;padding:6px 10px}
header{position:sticky;top:0;background:rgba(255,255,255,.96);backdrop-filter:blur(8px);border-bottom:1px solid var(--line);z-index:50}
.nav{display:flex;align-items:center;justify-content:space-between;height:68px}
.logo img{height:40px;width:auto}
nav ul{display:flex;gap:30px;list-style:none;font-weight:500}
nav a:hover,nav a.on{color:var(--blue)}
.tools{display:flex;gap:14px;align-items:center}
.burger{display:none;background:none;border:0;font-size:1.6rem;color:var(--navy);cursor:pointer}
.crumb{font-size:.88rem;color:var(--mute);padding:18px 0 0}.crumb a:hover{color:var(--blue)}
.pagehead{background:var(--soft);padding:36px 0}
.pagehead p{color:var(--mute);margin-top:6px;max-width:640px}
.imgph{background:repeating-linear-gradient(45deg,#DCE6EC,#DCE6EC 12px,#E8EFF3 12px,#E8EFF3 24px);border-radius:var(--r);display:flex;align-items:center;justify-content:center;color:var(--mute);font-size:.85rem;text-align:center;padding:10px}
.grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.card{border:1px solid var(--line);border-radius:var(--r);padding:16px;display:flex;flex-direction:column;gap:8px;transition:.2s;background:#fff}
.card:hover{box-shadow:0 10px 30px rgba(11,58,91,.1);transform:translateY(-3px)}
.card .pic{aspect-ratio:1/1;background:var(--soft);border-radius:10px;overflow:hidden;display:block}
.card .pic img{width:100%;height:100%;object-fit:contain}
.tag{font-size:.78rem;color:var(--blue);font-weight:600;text-transform:uppercase;letter-spacing:.04em}
.card h3{font-size:1.1rem}.card .for{font-size:.9rem;color:var(--mute)}
.price{font-weight:700;font-size:1.15rem;color:var(--navy)}
.card .row{display:flex;gap:8px;margin-top:auto}
.card .row .btn{flex:1;padding:9px 6px;font-size:.85rem}
.filters{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:24px}
.chip{padding:8px 16px;border:1px solid var(--line);border-radius:999px;font-size:.9rem;background:#fff;cursor:pointer}
.chip.on{background:var(--navy);color:#fff;border-color:var(--navy)}
.tablewrap{overflow-x:auto;border-radius:var(--r);background:#fff;border:1px solid var(--line)}
table{width:100%;border-collapse:collapse;min-width:600px}
th,td{padding:12px 16px;text-align:left;border-bottom:1px solid var(--line);font-size:.95rem;vertical-align:top}
th{background:var(--navy);color:#fff;font-weight:600}
td:first-child{font-weight:600;color:var(--navy);width:32%}
tr:last-child td{border-bottom:0}
.soft{background:var(--soft)}
.center{text-align:center}
/* product detail */
.pd{display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:start}
.gal .main{aspect-ratio:1/1;background:var(--soft);border-radius:var(--r);overflow:hidden}
.gal .main img{width:100%;height:100%;object-fit:contain}
.thumbs{display:flex;gap:10px;margin-top:10px}
.thumbs img{width:72px;height:72px;object-fit:cover;background:var(--soft);border-radius:10px;border:2px solid var(--line);cursor:pointer}
.thumbs img.on{border-color:var(--navy)}
.pd .model{color:var(--blue);font-weight:600;font-size:.9rem}
.pd .price{font-size:1.8rem;margin:12px 0}
.keys{list-style:none;margin:14px 0 20px}.keys li{padding:6px 0 6px 26px;position:relative}
.keys li:before{content:"✓";position:absolute;left:0;color:var(--blue);font-weight:700}
.buy{display:grid;gap:10px;margin:18px 0}
.buy .two{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.note{font-size:.85rem;color:var(--mute)}
.box{border:1px solid var(--line);border-radius:var(--r);padding:20px;background:#fff}
.faq details{border-bottom:1px solid var(--line);padding:14px 0}
.faq summary{cursor:pointer;font-weight:600;color:var(--navy)}
.faq p{margin-top:8px;color:var(--mute)}
.steps{counter-reset:s;list-style:none;display:grid;gap:14px}
.steps li{counter-increment:s;position:relative;padding:16px 16px 16px 64px;border:1px solid var(--line);border-radius:var(--r);background:#fff}
.steps li:before{content:counter(s);position:absolute;left:16px;top:14px;width:34px;height:34px;border-radius:50%;background:var(--navy);color:#fff;display:grid;place-items:center;font-weight:700}
.sgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.sgrid a{border:1px solid var(--line);border-radius:var(--r);padding:24px;transition:.2s;background:#fff}
.sgrid a:hover{border-color:var(--blue);box-shadow:0 8px 24px rgba(11,58,91,.08)}
.sgrid .ic{font-size:1.8rem;margin-bottom:6px}.sgrid h3{font-size:1.05rem;margin-bottom:4px}.sgrid p{color:var(--mute);font-size:.92rem}
.article{max-width:760px;margin:0 auto}
.article h2{margin-top:32px}.article p{margin:12px 0}
.meta{color:var(--mute);font-size:.9rem;margin:8px 0 24px}
.toc{background:var(--soft);border-radius:var(--r);padding:18px 22px;margin:20px 0}
.toc li{margin-left:18px}
.cta-in{background:var(--navy);color:#fff;border-radius:var(--r);padding:24px;margin:32px 0}
.cta-in h3{color:#fff;margin-bottom:8px}.cta-in .btn{border-color:#fff;color:#fff;margin-top:10px}.cta-in .btn.pri{background:#fff;color:var(--navy)}
.post .pic{aspect-ratio:16/10;margin-bottom:12px}.post h3{font-size:1.05rem;margin-bottom:4px}.post p{color:var(--mute);font-size:.9rem}
form{display:grid;gap:12px}
input,select,textarea{width:100%;padding:13px 14px;border:1px solid var(--line);border-radius:10px;font:inherit;background:#fff}
input:focus,select:focus,textarea:focus{outline:2px solid var(--blue);border-color:transparent}
label.l{font-size:.88rem;font-weight:600;color:var(--navy)}
.consent{display:flex;gap:8px;font-size:.85rem;color:var(--mute);align-items:flex-start}.consent input{width:auto;margin-top:5px}
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:48px}
.checkout{display:grid;grid-template-columns:1.2fr .8fr;gap:32px;align-items:start}
.line{display:grid;grid-template-columns:72px 1fr auto;gap:14px;align-items:center;padding:14px 0;border-bottom:1px solid var(--line)}
.line .t{width:72px;height:72px;border-radius:10px;overflow:hidden;background:var(--soft)}.line img{width:100%;height:100%;object-fit:contain}
.qty{display:inline-flex;border:1px solid var(--line);border-radius:999px;overflow:hidden;margin-top:6px}
.qty span{padding:4px 12px}.qty span:nth-child(2){border-inline:1px solid var(--line)}
.sum div{display:flex;justify-content:space-between;padding:8px 0}
.sum .tot{font-weight:700;font-size:1.15rem;border-top:1px solid var(--line);margin-top:6px;padding-top:14px;color:var(--navy)}
.pay{display:grid;gap:8px}
.pay label{display:flex;gap:10px;align-items:center;border:1px solid var(--line);border-radius:10px;padding:12px;cursor:pointer}.pay input{width:auto}
.vqr{width:160px;height:160px;margin:10px auto}
footer{background:#08283F;color:#C9D6DF;padding:56px 0 100px;font-size:.92rem}
.fgrid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px}
footer h4{color:#fff;margin-bottom:12px}footer li{list-style:none;margin-bottom:8px}footer a:hover{color:#fff}
footer .logo img{filter:brightness(0) invert(1);height:36px}
.copy{border-top:1px solid rgba(255,255,255,.15);margin-top:36px;padding-top:18px;font-size:.82rem}
.float{position:fixed;right:16px;bottom:18px;display:flex;flex-direction:column;gap:10px;z-index:60}
.float a{width:52px;height:52px;border-radius:50%;display:grid;place-items:center;color:#fff;font-weight:700;font-size:.72rem;box-shadow:0 6px 16px rgba(0,0,0,.25)}
.float .z{background:#0068FF}.float .c{background:#1FA85A}.float .m{background:#A033FF}
.stickybuy{display:none}
@media(max-width:900px){
 section{padding:40px 0}
 nav ul{display:none;position:absolute;top:68px;left:0;right:0;background:#fff;flex-direction:column;gap:0;border-bottom:1px solid var(--line)}
 nav ul.open{display:flex}nav li a{display:block;padding:15px 20px;border-top:1px solid var(--line)}
 .burger{display:block}
 .grid4{grid-template-columns:repeat(2,1fr)}.grid3,.sgrid{grid-template-columns:1fr 1fr}
 .pd,.two-col,.checkout,.fgrid{grid-template-columns:1fr}.two-col{gap:32px}
 .stickybuy{display:flex;position:fixed;left:0;right:0;bottom:0;background:#fff;border-top:1px solid var(--line);padding:10px 16px;gap:10px;z-index:55}
 .stickybuy .btn{flex:1;padding:12px 8px}
 .float{bottom:78px}
}
@media(max-width:520px){.grid4,.grid3,.sgrid{grid-template-columns:1fr}.buy .two{grid-template-columns:1fr}}

/* ===== Bổ sung cho theme WordPress ===== */
.screen-reader-text{position:absolute;left:-9999px}
.screen-reader-text:focus{left:8px;top:8px;background:#fff;padding:8px 12px;z-index:100}
.hero{background:linear-gradient(135deg,var(--soft),#E6F2F9);padding:80px 0}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center}
.hero h1{font-size:clamp(2rem,4.6vw,3.3rem);margin-bottom:16px}
.hero p{color:var(--mute);font-size:1.1rem;margin-bottom:28px;max-width:520px}
.hero .cta{display:flex;gap:14px;flex-wrap:wrap}
.hero-img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r)}
.why{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.why .num{width:44px;height:44px;border-radius:50%;background:var(--navy);color:#fff;display:grid;place-items:center;font-weight:700;margin-bottom:12px}
.why h3{font-size:1.05rem;margin-bottom:6px}.why p{color:var(--mute);font-size:.95rem}
.quote{background:#fff;border-radius:var(--r);padding:24px}.quote p{margin-bottom:14px}.quote b{color:var(--navy)}
.support{background:var(--navy)}.support h2,.support .sub{color:#fff}.support .sub{opacity:.8}
.support .sgrid{grid-template-columns:repeat(4,1fr)}
.support .sgrid a{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.18);color:#fff}
.support .sgrid a:hover{background:rgba(255,255,255,.16)}
.support .sgrid h3{color:#fff}.support .sgrid p{color:#fff;opacity:.8}
.card h3 a{color:inherit}
.card .price del{color:var(--mute);font-weight:400;font-size:.9em}.card .price ins{text-decoration:none}
.entry{line-height:1.75}.entry h2,.entry h3{margin:28px 0 10px}.entry p,.entry ul,.entry ol{margin:12px 0}.entry ul,.entry ol{padding-left:22px}
.entry img{border-radius:var(--r);height:auto}
.entry table{min-width:0;margin:16px 0}.entry a{color:var(--blue);text-decoration:underline}
.article-img{border-radius:var(--r);width:100%;height:auto;margin-bottom:20px}
.video iframe{width:100%;aspect-ratio:16/9;border:0;border-radius:var(--r)}
.pagination{margin-top:32px;text-align:center}
.pagination .page-numbers{display:inline-block;padding:8px 14px;border:1px solid var(--line);border-radius:999px;margin:0 3px}
.pagination .current{background:var(--navy);color:#fff;border-color:var(--navy)}
.nav ul li{list-style:none}
.gal .woocommerce-product-gallery{margin:0;position:relative}
.gal .woocommerce-product-gallery__wrapper{margin:0}
.gal .woocommerce-product-gallery__image img{width:100%;height:auto;border-radius:var(--r);background:var(--soft)}
.gal .flex-control-thumbs{display:flex;gap:10px;margin-top:10px;list-style:none;padding:0}
.gal .flex-control-thumbs li{width:72px}.gal .flex-control-thumbs img{border-radius:10px;border:2px solid var(--line);cursor:pointer;opacity:.7}
.gal .flex-control-thumbs img.flex-active{border-color:var(--navy);opacity:1}
.gal .woocommerce-product-gallery__trigger{position:absolute;right:10px;top:10px;z-index:5;background:#fff;border-radius:50%;width:36px;height:36px;display:grid;place-items:center;font-size:0}
.gal .woocommerce-product-gallery__trigger:before{content:"⤢";font-size:18px}
.spec table.woocommerce-product-attributes{min-width:0}
.spec .woocommerce-product-attributes-item__label{width:32%;font-weight:600;color:var(--navy);text-align:left}
.spec .woocommerce-product-attributes-item__value p{margin:0}
.pd .short{color:var(--mute);margin:10px 0}
/* Giỏ hàng, thanh toán, tài khoản (shortcode WooCommerce) */
.woocommerce table.shop_table{width:100%;min-width:0;border:1px solid var(--line);border-radius:var(--r);border-collapse:separate;border-spacing:0;overflow:hidden}
.woocommerce table.shop_table th{background:var(--soft);color:var(--navy)}
.woocommerce table.shop_table td,.woocommerce table.shop_table th{padding:12px 14px;border-bottom:1px solid var(--line)}
.woocommerce .cart_item img{width:72px;height:auto;border-radius:10px}
.woocommerce a.remove{color:#c00;font-size:1.4rem;text-decoration:none}
.woocommerce .quantity .qty{width:72px;padding:8px}
.woocommerce form .form-row{margin-bottom:12px;display:block}
.woocommerce form .form-row label{display:block;font-size:.88rem;font-weight:600;color:var(--navy);margin-bottom:4px}
.woocommerce .col2-set{display:block}
.woocommerce #payment{background:var(--soft);border-radius:var(--r);padding:16px}
.woocommerce #payment ul.payment_methods{list-style:none;padding:0}
.woocommerce #payment .payment_box{background:#fff;border-radius:10px;padding:12px;margin:8px 0}
.woocommerce button.button,.woocommerce a.button,.woocommerce #place_order{display:inline-block;padding:13px 24px;border-radius:999px;font-weight:600;border:2px solid var(--navy);background:var(--navy);color:#fff;cursor:pointer;font-size:1rem;font-family:inherit}
.woocommerce button.button:hover,.woocommerce a.button:hover,.woocommerce #place_order:hover{background:var(--blue);border-color:var(--blue)}
.woocommerce #place_order{width:100%}
.woocommerce-message,.woocommerce-info,.woocommerce-error{list-style:none;padding:14px 16px;border-radius:10px;background:var(--soft);margin-bottom:16px}
.woocommerce-error{background:#fdecea}
/* Form Contact Form 7 / Fluent Forms */
.wpcf7-form p{margin-bottom:12px}.wpcf7-form label{font-size:.88rem;font-weight:600;color:var(--navy);display:block}
.wpcf7-submit{display:inline-block;padding:13px 24px;border-radius:999px;font-weight:600;border:2px solid var(--navy);background:var(--navy);color:#fff;cursor:pointer;font-size:1rem}
.wpcf7-not-valid-tip{color:#c00;font-size:.85rem}.wpcf7-response-output{margin:12px 0;padding:10px;border-radius:10px;background:var(--soft)}
@media(max-width:900px){.hero{padding:44px 0}.hero-grid{grid-template-columns:1fr}.why,.support .sgrid{grid-template-columns:repeat(2,1fr)}.woocommerce table.shop_table{font-size:.9rem}}
@media(max-width:520px){.why,.support .sgrid{grid-template-columns:1fr}.hero .cta .btn{flex:1;text-align:center}}