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@media(max-width:360px){.container{width:calc(100% - 32px)}.hero-actions{display:grid;grid-template-columns:1fr}.hero-actions .button{width:100%}.choice-group{grid-template-columns:1fr}.need-choice span{justify-content:flex-start;padding-left:14px}.consult-actions{grid-template-columns:1fr}.hero-copy .eyebrow{font-size:.75rem;letter-spacing:.04em}.hero-image-label span{font-size:.75rem;letter-spacing:.02em}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important}}

/* Body copy and consultation instructions stay comfortably readable. */
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.direction strong,.direction p,.message-preview summary{font-size:.875rem}
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@media(max-width:640px){.header,.header-inner{min-height:78px}.header-inner{padding-block:12px}}

/* Product catalog and purchase policies extend the existing blue store theme. */
[hidden]{display:none!important}
.desktop-nav{gap:22px;flex-wrap:wrap;justify-content:center}
.catalog-section{background:#f8faff;border-bottom:1px solid var(--line)}
.catalog-benefits{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:26px}
.catalog-benefits a{display:inline-flex;align-items:center;gap:7px;font-size:.875rem;font-weight:600;color:#304b75;padding:8px 12px;background:#edf3ff;border:1px solid #dce7fd;border-radius:7px}
.catalog-benefits .icon{width:17px;height:17px;color:var(--blue)}
.catalog-benefits a:hover{border-color:var(--blue)}
.catalog-toolbar{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:24px}
.catalog-filters{display:flex;flex-wrap:wrap;gap:8px}
.catalog-filter{border:1px solid #d4dfed;background:#fff;color:#4b5b73;border-radius:8px;padding:10px 17px;min-height:44px;font-size:.9375rem;font-weight:600}
.catalog-filter[aria-pressed=true]{color:white;background:var(--navy);border-color:var(--navy)}
.catalog-filter:hover{border-color:#7199d5}
.catalog-count{font-size:.875rem;color:var(--muted);white-space:nowrap}
.product-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;align-items:stretch}
.product-card{display:flex;flex-direction:column;min-width:0;border:1px solid #dce4ef;border-radius:16px;background:#fff;overflow:hidden;box-shadow:0 4px 18px #10234304;scroll-margin-top:112px}
.product-card-featured{border-color:#9ab8f0;box-shadow:0 4px 20px #1559e50b}
.product-topline{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:18px 21px 0;flex-wrap:wrap}
.product-brand{font-size:.875rem;font-weight:800;color:#254675;letter-spacing:.05em}
.product-offer,.product-budget-tag{font-size:.8125rem;line-height:1.5;padding:4px 9px;border-radius:5px;font-weight:600}
.product-offer{background:#e9f1ff;color:#1046b9}
.product-budget-tag{background:#f0f4f9;color:#52647d}
.product-image{margin:8px 18px 0;aspect-ratio:1.8;background:#fff;display:flex;align-items:center;justify-content:center}
.product-image img{display:block;width:100%;height:100%;object-fit:contain}
.product-body{padding:18px 22px 20px;display:flex;flex-direction:column;flex-grow:1}
.product-category{font-size:.75rem;letter-spacing:.05em;font-weight:650;color:#64768e;margin-bottom:7px}
.product-body h3{font-size:1.35rem;line-height:1.35;letter-spacing:-.025em}
.product-variant{font-size:.875rem;color:var(--muted);margin-top:4px}
.product-specs{margin:20px 0 22px;font-size:.9375rem;line-height:1.55}
.product-specs>div{display:grid;grid-template-columns:78px minmax(0,1fr);gap:8px;border-bottom:1px solid #edf1f6;padding:8px 0}
.product-specs dt{color:#637087}
.product-specs dd{margin:0;color:var(--ink);font-weight:550;overflow-wrap:anywhere}
.product-purchase{margin-top:auto;border-top:1px solid #dfe7f2;padding-top:15px}
.product-price{display:flex;flex-direction:column;justify-content:flex-end;min-height:66px}
.product-price del{font-size:.875rem;color:#6b788a}
.product-price strong{font-size:1.6rem;line-height:1.35;font-weight:800;letter-spacing:-.025em;color:var(--blue)}
.product-warranty{font-size:.875rem;color:#556982;margin-top:5px;margin-bottom:15px}
.product-inquiry{width:100%;min-height:47px;font-size:.9375rem;display:none}
.js-enabled .product-inquiry{display:inline-flex}
.product-zalo{display:block;text-align:center;color:var(--blue);font-size:.875rem;font-weight:600;padding:12px 5px 0;min-height:38px}
.product-zalo:hover{text-decoration:underline}
.catalog-note{font-size:.875rem;color:var(--muted);line-height:1.8;margin-top:24px;max-width:910px}
.selected-product{display:flex;align-items:center;justify-content:space-between;gap:15px;border:1px solid #a8c3f4;border-radius:9px;padding:15px;margin-bottom:24px;background:#f0f5ff}
.selected-product p{font-size:.8125rem;color:#4c6285}
.selected-product strong{display:block;font-size:1rem;line-height:1.5;margin-top:3px}
.selected-product span{display:block;color:var(--blue);font-weight:700;font-size:.9375rem;margin-top:3px}
.selected-product button{background:#fff;border:1px solid #c9d8ef;border-radius:7px;padding:10px 12px;color:#36547e;font-size:.875rem;min-height:44px;flex-shrink:0}
.choice-group{grid-template-columns:repeat(2,minmax(0,1fr))}
.policy-section{background:#fff}
.policy-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.policy-card{border:1px solid var(--line);border-radius:14px;padding:25px 22px;background:#fbfcff}
.policy-number{display:inline-flex;align-items:center;justify-content:center;color:var(--blue);background:#eaf1ff;border-radius:7px;padding:6px 10px;font-size:.875rem;font-weight:750;margin-bottom:20px}
.policy-card h3{font-size:1.125rem;line-height:1.5;letter-spacing:-.015em;margin-bottom:12px}
.policy-card p{font-size:1rem;line-height:1.8;color:var(--muted)}
.policy-contact{display:flex;align-items:center;justify-content:space-between;gap:35px;border-top:1px solid var(--line);margin-top:32px;padding-top:25px}
.policy-contact strong{font-size:1.0625rem}
.policy-contact p{font-size:.9375rem;line-height:1.8;color:var(--muted);max-width:830px;margin-top:6px}
.policy-contact .button{flex-shrink:0}
.faq-list details>p a{color:var(--blue);text-decoration:underline;text-underline-offset:3px}
.footer-bottom a:hover{color:var(--blue);text-decoration:underline}
@media(max-width:1100px){.desktop-nav{display:none}.menu-toggle{display:flex}.header-contact{margin-left:auto}.product-grid{gap:18px}.product-body{padding:17px 18px 18px}.product-topline{padding-inline:18px}.product-specs>div{grid-template-columns:70px minmax(0,1fr)}.policy-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:900px){.product-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.product-body{padding:20px}.policy-contact{align-items:flex-start;gap:24px}.policy-contact p{font-size:1rem}}
@media(max-width:640px){.catalog-toolbar{align-items:flex-start;flex-direction:column;gap:13px}.catalog-filter{padding:10px 13px;font-size:.875rem}.catalog-benefits{gap:8px;margin-bottom:22px}.catalog-benefits a{font-size:.875rem;padding:7px 9px}.product-grid{grid-template-columns:minmax(0,1fr);gap:20px}.product-topline{padding:20px 22px 0}.product-image{aspect-ratio:1.95;margin-inline:22px}.product-body{padding:18px 22px 22px}.product-body h3{font-size:1.4rem}.product-specs{font-size:1rem}.product-specs>div{grid-template-columns:84px minmax(0,1fr)}.product-price strong{font-size:1.75rem}.product-price{min-height:60px}.product-inquiry{font-size:1rem}.product-zalo{font-size:.9375rem;padding-top:14px}.catalog-note{font-size:.875rem}.policy-grid{grid-template-columns:minmax(0,1fr);gap:15px}.policy-card{padding:24px}.policy-number{margin-bottom:15px}.policy-card h3{font-size:1.2rem}.policy-contact{flex-direction:column;gap:20px}.policy-contact .button{width:100%}.policy-section .section-heading>.button{margin-top:20px}.selected-product{align-items:flex-start;flex-wrap:wrap}.selected-product button{min-height:44px}}

.catalog-toolbar{display:flex;flex-direction:column;align-items:stretch;gap:20px;padding:23px;background:#fff;border:1px solid var(--line);border-radius:12px}
.catalog-search-row{display:grid;grid-template-columns:2fr 1fr 1fr;gap:15px}
.catalog-field{min-width:0}
.catalog-field label,.catalog-sort label{display:block;font-size:.875rem;font-weight:650;color:#445673;margin-bottom:7px}
.catalog-field input,.catalog-field select,.catalog-sort select{display:block;min-height:46px;width:100%;border:1px solid #d5dfed;border-radius:7px;padding:10px 12px;font-size:1rem;color:var(--ink);background:#fff}
.catalog-field input::placeholder{color:#74839a;opacity:1}
.catalog-filter-row{display:flex;align-items:flex-end;justify-content:space-between;gap:20px}
.catalog-sort{min-width:180px}
.catalog-sort select{font-size:.9375rem}
.catalog-results-row{display:flex;align-items:center;justify-content:space-between;gap:18px}
#catalog-reset{background:transparent;border:0;color:var(--blue);font-size:.875rem;font-weight:650;min-height:40px;padding:7px 0}
.product-detail-note{font-size:.875rem;color:#536780;line-height:1.75;background:#f2f6fd;border-left:2px solid #c0d1ed;padding:10px 12px;border-radius:0 5px 5px 0;margin:0 0 18px}
.product-price-contact strong{font-size:1.2rem;letter-spacing:0}
.catalog-pagination{display:flex;align-items:center;justify-content:center;gap:20px;margin-top:30px;flex-wrap:wrap}
.catalog-pagination button{min-height:45px;border:1px solid #cbd9ed;color:#244978;background:#fff;padding:10px 17px;border-radius:7px;font-size:.9375rem;font-weight:600}
.catalog-pagination button:hover:not(:disabled){border-color:var(--blue);color:var(--blue)}
.catalog-pagination button:disabled{opacity:.45;cursor:default}
.catalog-pagination span{font-size:.9375rem;color:#536780}
.catalog-empty{border:1px solid var(--line);background:white;text-align:center;border-radius:12px;padding:35px 24px}
.catalog-empty h3{font-size:1.3rem}
.catalog-empty p{font-size:1rem;color:var(--muted);max-width:600px;margin:15px auto 22px}
@media(max-width:900px){.catalog-search-row{grid-template-columns:1fr 1fr}.catalog-search{grid-column:1/-1}.catalog-filter-row{align-items:flex-start;flex-direction:column;gap:15px}.catalog-sort{width:100%;display:flex;gap:12px;align-items:center}.catalog-sort label{margin:0;white-space:nowrap}.catalog-sort select{max-width:240px}}
@media(max-width:640px){.catalog-toolbar{padding:18px 15px;gap:18px}.catalog-search-row{gap:13px 10px}.catalog-field label,.catalog-sort label{font-size:.875rem}.catalog-field select{padding-inline:8px}.catalog-search input{font-size:1rem}.catalog-sort select{max-width:none;flex:1;min-width:0}.catalog-filters{gap:7px}.catalog-filter{font-size:.875rem;padding-inline:11px}.catalog-pagination{gap:14px}.catalog-pagination button{font-size:.875rem;padding-inline:12px}.catalog-pagination span{font-size:.875rem}.product-price-contact strong{font-size:1.25rem}}
@media(max-width:640px){.header-inner .brand{flex-shrink:1;min-width:0}.brand-mark{flex-shrink:0}.brand-name{min-width:0;line-height:1.2;overflow-wrap:anywhere}.brand-name small{line-height:1.45}.header-contact,.menu-toggle{flex-shrink:0}}