:root{--bg:#f6f8fb;--card:#fff;--text:#0b1220;--muted:#64748b;--line:#e5edf6;--brand:#0f172a;--accent:#2563eb;--accent2:#0ea5e9;--good:#16a34a;--bad:#dc2626;--shadow:0 18px 45px rgba(15,23,42,.07);--soft:0 10px 26px rgba(15,23,42,.06);--radius:22px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:linear-gradient(180deg,#f8fbff 0,#f6f8fb 260px,#f6f8fb 100%);color:var(--text);font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;font-size:15px;line-height:1.55}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}.top{position:sticky;top:0;z-index:20;display:grid;grid-template-columns:auto minmax(280px,680px) auto;align-items:center;gap:18px;padding:14px max(20px,calc((100vw - 1320px)/2));background:rgba(255,255,255,.86);backdrop-filter:blur(18px);border-bottom:1px solid rgba(226,232,240,.9)}.brand{font-size:22px;font-weight:950;letter-spacing:-.04em}.search{display:flex;gap:8px;background:#f1f5f9;border:1px solid var(--line);border-radius:999px;padding:6px}.search input{flex:1;min-width:0;border:0;background:transparent;padding:9px 12px;outline:none}.search button,.hero button,.shop-head button,.buy-actions button,.cart-panel button,.checkout-btn{border:0;border-radius:999px;background:linear-gradient(135deg,var(--brand),#1e40af);color:#fff;font-weight:900;padding:10px 16px;cursor:pointer;box-shadow:0 10px 22px rgba(37,99,235,.16)}.hotline{font-weight:900;color:#1d4ed8;background:#eff6ff;border:1px solid #dbeafe;border-radius:999px;padding:10px 14px}.hero{max-width:1320px;margin:26px auto 10px;padding:0 20px;display:grid;grid-template-columns:1.4fr .6fr;gap:18px}.hero>div:first-child,.hero-card,.shop-head,.product-img,.product-info,.more-card,.card,.cart-panel{background:var(--card);border:1px solid var(--line);box-shadow:var(--shadow);border-radius:var(--radius)}.hero>div:first-child{padding:42px;background:radial-gradient(circle at 10% 0,#e0f2fe 0,transparent 32%),linear-gradient(135deg,#fff,#f8fbff)}.eyebrow{margin:0 0 9px;color:#2563eb;text-transform:uppercase;letter-spacing:.12em;font-size:12px;font-weight:950}.hero h1{max-width:760px;margin:0 0 12px;font-size:clamp(34px,5vw,64px);line-height:.96;letter-spacing:-.06em}.hero p{max-width:680px;color:#475569}.hero form{display:flex;gap:10px;margin-top:22px;max-width:560px}.hero input,.shop-head input,.shop-head select{width:100%;border:1px solid var(--line);border-radius:16px;padding:13px 15px;background:#fff;outline:none}.hero-card{display:grid;place-items:center;text-align:center;min-height:230px;background:linear-gradient(135deg,#0f172a,#1d4ed8);color:#fff}.hero-card b{font-size:70px;letter-spacing:-.06em}.hero-card span{font-weight:850;color:#bfdbfe}.section-head,.shop-head{max-width:1320px;margin:22px auto 10px;padding:0 20px}.section-head{display:flex;align-items:end;justify-content:space-between;gap:12px}.section-head h2,.shop-head h1{margin:0;font-size:30px;letter-spacing:-.04em}.section-head a{color:#1d4ed8;font-weight:900}.shop-head{padding:24px 20px}.shop-head form{display:grid;grid-template-columns:1fr 180px auto;gap:10px;margin-top:16px}.grid{max-width:1320px;margin:0 auto;padding:14px 20px 42px;display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:16px}.card{overflow:hidden;transition:transform .18s ease,box-shadow .18s ease;border-radius:22px}.card:hover{transform:translateY(-3px);box-shadow:0 22px 50px rgba(15,23,42,.11)}.pic{position:relative;display:flex;align-items:center;justify-content:center;aspect-ratio:1/1;background:#fff;padding:12px;border-bottom:1px solid var(--line)}.pic img{width:100%;height:100%;object-fit:contain;border-radius:16px}.pic span{position:absolute;left:10px;top:10px;border-radius:999px;background:rgba(15,23,42,.88);color:#fff;font-size:11px;font-weight:900;padding:6px 9px}.info{padding:13px;display:grid;gap:8px}.name{font-weight:950;line-height:1.35;min-height:40px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.info p{margin:0;color:var(--muted);font-size:12.5px;line-height:1.42;min-height:36px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.info b,.price{color:#dc2626;font-size:18px;font-weight:950}.card-actions{display:flex;gap:8px;margin-top:3px}.card-actions button,.detail-link{height:39px;display:inline-flex;align-items:center;justify-content:center;border-radius:13px;padding:0 11px;font-size:13px;font-weight:900}.card-actions button{flex:1;border:0;background:#0f172a;color:#fff;cursor:pointer}.detail-link{background:#eff6ff;color:#1d4ed8;border:1px solid #dbeafe}.empty{max-width:1320px;margin:30px auto;padding:30px;background:#fff;border:1px solid var(--line);border-radius:22px;box-shadow:var(--soft)}.product{max-width:1380px;margin:24px auto 44px;padding:0 20px;display:grid;grid-template-columns:minmax(360px,.92fr) minmax(420px,1.08fr);gap:22px}.product-img,.product-info{padding:22px}.product-img>img{width:100%;max-height:680px;object-fit:contain;border-radius:18px;background:#fff}.product-gallery-inline{display:grid;grid-template-columns:repeat(6,1fr);gap:10px;margin-top:14px}.product-gallery-inline a{display:block;border:1px solid var(--line);border-radius:14px;overflow:hidden;background:#fff;aspect-ratio:1/1}.product-gallery-inline img{width:100%;height:100%;object-fit:cover}.product-info h1{font-size:clamp(30px,4vw,50px);line-height:1.02;letter-spacing:-.055em;margin:0 0 10px}.product-info>.price{font-size:24px;margin:8px 0 16px}.product-specs{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:14px 0}.product-specs>div{border:1px solid var(--line);background:#f8fafc;border-radius:17px;padding:13px}.product-specs span{display:block;color:var(--muted);font-size:12px}.product-specs b{font-size:16px}.ok-text{color:var(--good)}.bad-text{color:var(--bad)}.trust,.buy-actions{display:flex;flex-wrap:wrap;gap:10px;margin:16px 0}.trust-btn{border:0;background:#f1f5f9;color:#0f172a;border-radius:999px;padding:11px 14px;font-weight:900;cursor:pointer}.more-btn.primary-more{background:linear-gradient(135deg,#2563eb,#1d4ed8)!important}.more-details{margin-top:18px}.more-hint{border:1px dashed #cbd5e1;background:#f8fafc;border-radius:18px;padding:16px;color:#475569}.more-hint span{font-weight:950;color:#1d4ed8}.more-card{padding:18px}.more-head{display:flex;align-items:center;justify-content:space-between;gap:12px}.more-head h2{margin:0;font-size:24px}.lens-link,.lens-badge{display:inline-flex;align-items:center;margin:4px 0 4px 8px;border-radius:999px;padding:8px 11px;font-size:12px;font-weight:950}.lens-link{background:#0f172a;color:#fff}.lens-badge{background:#dcfce7;color:#166534;border:1px solid #bbf7d0}.lens-badge.soft{background:#f1f5f9;color:#334155;border-color:#e2e8f0}.more-desc{color:#334155}.ai-detail-list{margin:12px 0 0;padding-left:20px;color:#334155}.ai-detail-list li{margin:7px 0}.ai-overview-block h3{margin:14px 0 6px;font-size:17px}.more-list{padding-left:20px;color:#334155}.detail-gallery{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:10px}.detail-img{display:block;border:1px solid var(--line);border-radius:15px;overflow:hidden;background:#fff;aspect-ratio:1/1}.detail-img img{width:100%;height:100%;object-fit:cover}.source-list,.content-sections{display:grid;gap:10px}.source-item,.content-source{display:block;background:#fff;border:1px solid var(--line);border-radius:16px;padding:13px}.source-item b,.content-source b{display:block;color:#0f172a}.source-item small,.content-source small{display:block;color:#64748b}.content-source p{margin:8px 0;color:#334155}.content-source ul{margin:8px 0;padding-left:18px;color:#334155}.content-source a{display:inline-flex;background:#eff6ff;color:#1d4ed8;border-radius:999px;padding:8px 10px;font-weight:900;font-size:13px}.more-loading{display:flex;gap:8px;padding:18px}.more-loading span{width:10px;height:10px;border-radius:50%;background:#2563eb;animation:pulse 1s infinite alternate}.more-loading span:nth-child(2){animation-delay:.15s}.more-loading span:nth-child(3){animation-delay:.3s}@keyframes pulse{from{opacity:.25;transform:translateY(0)}to{opacity:1;transform:translateY(-4px)}}.cart-float{position:fixed;right:18px;bottom:18px;z-index:30;border:0;border-radius:999px;background:#0f172a;color:#fff;padding:13px 16px;font-weight:950;box-shadow:var(--shadow);cursor:pointer}.cart{position:fixed;inset:0;z-index:40;pointer-events:none}.cart-panel{pointer-events:auto;position:absolute;right:18px;bottom:76px;width:min(420px,calc(100vw - 28px));max-height:calc(100vh - 100px);overflow:auto;padding:18px}.cart-title{display:flex;justify-content:space-between;align-items:center}.cart-title h3{margin:0}.x{background:#f1f5f9!important;color:#0f172a!important;box-shadow:none!important}.cart-row{display:flex;justify-content:space-between;gap:12px;padding:12px 0;border-bottom:1px solid var(--line)}.cart-row p{margin:8px 0 0}.checkout-form{display:grid;gap:10px}.checkout-form input,.checkout-form textarea{width:100%;border:1px solid var(--line);border-radius:14px;padding:11px;background:#fff}.checkout-msg{font-weight:800;color:#475569}.checkout-msg.err{color:#dc2626}.checkout-msg.ok{color:#15803d}footer{border-top:1px solid var(--line);padding:30px 20px;text-align:center;color:#64748b;background:#fff}footer b{color:#0f172a}@media(max-width:1180px){.grid{grid-template-columns:repeat(4,1fr)}.product{grid-template-columns:1fr}.product-img>img{max-height:520px}.detail-gallery{grid-template-columns:repeat(4,1fr)}}@media(max-width:820px){.top{position:relative;grid-template-columns:1fr;gap:10px}.hotline{justify-self:start}.hero{grid-template-columns:1fr}.hero>div:first-child{padding:28px}.hero form,.section-head{display:block}.shop-head form{grid-template-columns:1fr}.grid{grid-template-columns:repeat(2,1fr);gap:12px;padding-left:14px;padding-right:14px}.product{padding:0 14px}.product-info,.product-img{padding:16px;border-radius:20px}.product-specs{grid-template-columns:1fr}.product-gallery-inline,.detail-gallery{grid-template-columns:repeat(3,1fr)}.more-head{display:block}.lens-link,.lens-badge{margin-left:0;margin-right:6px}.card-actions{display:grid;grid-template-columns:1fr}.cart-panel{right:10px;left:10px;width:auto}}@media(max-width:420px){.grid{grid-template-columns:1fr}.product-gallery-inline,.detail-gallery{grid-template-columns:repeat(2,1fr)}.hero h1{font-size:34px}}

.lens-badge.warn{background:#fff7ed;color:#9a3412;border-color:#fed7aa}
.customer-detail-v24{display:grid;gap:14px}.customer-detail-v24 .more-actions{display:flex;justify-content:flex-end;gap:8px}.customer-detail-v24 .ai-desc{font-size:15.5px;line-height:1.75;color:#1f2937;margin:0}.customer-detail-v24 .ai-list{margin:0;padding-left:20px;color:#334155;line-height:1.7}.customer-detail-v24 .detail-gallery{margin-top:2px}.top-source-list{grid-template-columns:repeat(2,minmax(0,1fr));display:grid;gap:10px}.top-source b{color:#1d4ed8}.top-source small{font-weight:800;margin-top:4px}.top-source em{display:block;font-style:normal;color:#64748b;font-size:12px;margin-top:2px}@media(max-width:820px){.top-source-list{grid-template-columns:1fr}.customer-detail-v24 .more-actions{justify-content:flex-start}}

/* V25: Chi tiết hơn = AI overview + ảnh sản phẩm + top 2 links */
.customer-detail-v25{display:grid;gap:14px}.customer-detail-v25 .more-actions{display:flex;justify-content:flex-end;gap:8px;flex-wrap:wrap}.ai-overview-block{border:1px solid var(--line);border-radius:18px;padding:16px;background:#fff}.ai-overview-block h2{margin:0 0 10px;font-size:23px;letter-spacing:-.03em}.customer-detail-v25 .ai-desc{font-size:15.5px;line-height:1.75;color:#1f2937;margin:0 0 8px}.customer-detail-v25 .ai-list{margin:0;padding-left:20px;color:#334155;line-height:1.7}.customer-detail-v25 .ai-image-gallery{margin-top:2px}.ai-image-note{font-size:12.5px;line-height:1.55;color:#64748b;margin:0}.customer-detail-v25 .top-source-list{grid-template-columns:repeat(2,minmax(0,1fr));display:grid;gap:10px}.customer-detail-v25 .top-source b{color:#1d4ed8}.customer-detail-v25 .top-source small{font-weight:800;margin-top:4px}.customer-detail-v25 .top-source em{display:block;font-style:normal;color:#64748b;font-size:12px;margin-top:2px}@media(max-width:820px){.customer-detail-v25 .top-source-list{grid-template-columns:1fr}.customer-detail-v25 .more-actions{justify-content:flex-start}}

/* V31: SEO category pages, breadcrumbs, crawler-readable product copy */
.category-grid{max-width:1320px;margin:0 auto 10px;padding:0 20px 16px;display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:12px}.category-chip{background:#fff;border:1px solid var(--line);border-radius:18px;padding:14px;box-shadow:var(--soft);transition:transform .16s ease,box-shadow .16s ease}.category-chip:hover{transform:translateY(-2px);box-shadow:var(--shadow)}.category-chip b{display:block;font-weight:950;color:#0f172a;line-height:1.25}.category-chip small{display:block;margin-top:4px;color:#64748b}.breadcrumbs{max-width:1380px;margin:18px auto 0;padding:0 20px;display:flex;gap:8px;align-items:center;flex-wrap:wrap;color:#64748b;font-size:13px}.breadcrumbs a{color:#1d4ed8;font-weight:900}.seo-product-copy{margin:16px 0;border:1px solid #e2e8f0;border-radius:18px;background:#f8fafc;padding:16px}.seo-product-copy h2{margin:0 0 8px;font-size:20px;letter-spacing:-.03em}.seo-product-copy p{margin:0 0 8px;color:#334155;line-height:1.72}.seo-product-copy ul{margin:0;padding-left:20px;color:#334155;line-height:1.7}.seo-product-copy li+li{margin-top:4px}@media(max-width:1180px){.category-grid{grid-template-columns:repeat(4,1fr)}}@media(max-width:820px){.category-grid{grid-template-columns:repeat(2,1fr);padding-left:14px;padding-right:14px}.breadcrumbs{padding:0 14px}}@media(max-width:420px){.category-grid{grid-template-columns:1fr}}
/* V34: Hiển thị mã hàng công khai trên thẻ sản phẩm ở trang chủ, cửa hàng, tìm kiếm và danh mục */
.card-sku{display:flex;align-items:center;min-height:22px;margin-top:-2px;line-height:1.25;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.card-sku strong{display:inline-block;max-width:100%;overflow:hidden;text-overflow:ellipsis;border-radius:999px;background:#f1f5f9;border:1px solid #e2e8f0;color:#0f172a;font-weight:950;font-size:12px;letter-spacing:.01em;padding:3px 8px}
@media(max-width:820px){.card-sku strong{font-size:11.5px;padding:3px 7px}}


/* V40.2: BestMallVN logo, favicon style, hotline & Zalo contact */
.top{grid-template-columns:auto minmax(240px,680px) auto}
.brand{display:inline-flex;align-items:center;gap:10px;min-width:210px;letter-spacing:0}
.brand-logo{width:54px;height:54px;object-fit:contain;border-radius:16px;background:#fff;box-shadow:0 8px 22px rgba(135,144,97,.14)}
.brand span{display:grid;line-height:1.05}
.brand strong{font-size:21px;font-weight:950;color:#6f774f;letter-spacing:-.03em}
.brand small{font-size:11px;text-transform:uppercase;letter-spacing:.22em;color:#2d7fce;font-weight:850;margin-top:4px;white-space:nowrap}
.top-actions{display:flex;align-items:center;justify-content:flex-end;gap:8px;flex-wrap:wrap}
.zalo-top{font-weight:950;color:#fff;background:linear-gradient(135deg,#0ea5e9,#2563eb);border:1px solid #bae6fd;border-radius:999px;padding:10px 14px;box-shadow:0 10px 22px rgba(14,165,233,.16)}
.contact-float{position:fixed;right:18px;bottom:70px;z-index:32;display:grid;gap:8px}
.contact-float a{width:54px;height:54px;border-radius:999px;display:flex;align-items:center;justify-content:center;color:#fff;font-weight:950;box-shadow:var(--shadow);border:1px solid rgba(255,255,255,.6)}
.zalo-float{background:linear-gradient(135deg,#0ea5e9,#2563eb)}
.phone-float{background:linear-gradient(135deg,#879061,#5f6846)}
.footer-brand{display:inline-flex;align-items:center;gap:12px;justify-content:center;margin-bottom:8px}
.footer-logo{width:76px;height:76px;object-fit:contain;border-radius:18px;background:#fff;box-shadow:0 10px 26px rgba(15,23,42,.08)}
.footer-brand p{margin:2px 0 0;color:#2d7fce;font-weight:850;letter-spacing:.16em;text-transform:uppercase;font-size:12px}
footer a{color:#1d4ed8;font-weight:900}
@media(max-width:940px){.top{grid-template-columns:1fr}.brand{min-width:0}.top-actions{justify-content:flex-start}.contact-float{right:12px;bottom:66px}.cart-float{right:12px}}
@media(max-width:420px){.brand-logo{width:48px;height:48px}.brand strong{font-size:19px}.brand small{font-size:10px;letter-spacing:.18em}.top-actions{display:grid;grid-template-columns:1fr;align-items:stretch}.hotline,.zalo-top{text-align:center}.contact-float a{width:50px;height:50px;font-size:13px}}

/* v40.5 speed + fix ảnh Excel cột N */
.card{content-visibility:auto;contain-intrinsic-size:360px 470px;}
.product-grid-six{contain:layout paint;}
.pagination{display:flex;align-items:center;justify-content:space-between;gap:14px;margin:18px 0 22px;padding:12px 14px;border:1px solid rgba(15,23,42,.08);border-radius:16px;background:#fff;box-shadow:0 8px 28px rgba(15,23,42,.05);}
.pagination small{color:#64748b;font-weight:700;white-space:nowrap;}
.pagination div{display:flex;align-items:center;justify-content:flex-end;gap:8px;flex-wrap:wrap;}
.pagination a,.pagination strong,.pagination span{min-width:36px;height:36px;padding:0 10px;border-radius:999px;display:inline-flex;align-items:center;justify-content:center;text-decoration:none;font-weight:800;}
.pagination a{background:#f8fafc;color:#0f172a;border:1px solid rgba(15,23,42,.08);}
.pagination a:hover{background:#eef2ff;}
.pagination strong{background:#1f2937;color:#fff;}
.pagination span{color:#94a3b8;}
@media(max-width:640px){.pagination{align-items:stretch;flex-direction:column}.pagination small{white-space:normal}.pagination div{justify-content:flex-start}.pagination a,.pagination strong,.pagination span{min-width:34px;height:34px}}

/* V40.6: thay bảng Google + sàn bằng bảng tìm kiếm hình ảnh sản phẩm */
.product-image-search-links,.detail-image-search-panel{margin:14px 0;border:1px solid #bfdbfe;background:linear-gradient(135deg,#eff6ff,#ffffff);border-radius:18px;padding:14px;display:grid;gap:12px;box-shadow:0 10px 28px rgba(37,99,235,.06)}
.image-search-head b{display:block;color:#0f172a;font-weight:950;line-height:1.35;font-size:15px}
.image-search-head small{display:block;margin-top:4px;color:#475569;font-size:12.5px;line-height:1.5}
.image-search-table-wrap{overflow:hidden;border:1px solid #dbeafe;border-radius:14px;background:#fff}
.image-search-table{width:100%;border-collapse:collapse;font-size:13.5px}
.image-search-table tr+tr{border-top:1px solid #e5eefc}
.image-search-table td{padding:11px 12px;vertical-align:middle}
.image-search-table td:first-child{width:72%}
.image-search-table strong{display:block;color:#0f172a;font-weight:950;line-height:1.35}
.image-search-table span{display:block;margin-top:3px;color:#64748b;line-height:1.45;font-size:12.5px}
.image-search-table a{display:inline-flex;align-items:center;justify-content:center;min-height:36px;padding:0 13px;border-radius:999px;background:#1d4ed8;color:#fff;font-weight:950;white-space:nowrap;box-shadow:0 8px 18px rgba(29,78,216,.16)}
.image-search-table a:hover{background:#1e40af}
@media(max-width:640px){.image-search-table,.image-search-table tbody,.image-search-table tr,.image-search-table td{display:block;width:100%}.image-search-table td:first-child{width:100%;padding-bottom:4px}.image-search-table td:last-child{padding-top:4px}.image-search-table a{width:100%}}

/* V42: SEO thương mại + trang chính sách */
.footer-links a{color:inherit;text-decoration:underline;text-underline-offset:3px}.policy-page{max-width:980px;margin:28px auto;padding:28px;background:#fff;border-radius:18px;box-shadow:0 10px 32px rgba(0,0,0,.06);line-height:1.75}.policy-page h1{margin-top:0}.policy-page ol{padding-left:24px}.seo-spec-table{width:100%;border-collapse:collapse;margin:14px 0 20px;background:#fff}.seo-spec-table th,.seo-spec-table td{border:1px solid rgba(0,0,0,.08);padding:10px 12px;text-align:left;vertical-align:top}.seo-spec-table th{width:190px;background:#f8f6ef}.seo-product-copy details{border:1px solid rgba(0,0,0,.08);border-radius:12px;padding:10px 12px;margin:8px 0;background:#fff}.seo-product-copy summary{cursor:pointer;font-weight:700}