/* TỐT TÂM PHÚC — giao diện công khai (phủ lên Bootstrap 5). Màu thương hiệu lấy từ biến CSS do layout in ra. */
:root{--ttp-primary:#0756A8;--ttp-dark:#12345B;--ttp-accent:#F59E0B;--ttp-bg:#F5F7FA;--ttp-text:#1F2937;--ttp-muted:#5b6676;--ttp-border:#e3e8ef;--ttp-radius:14px;--ttp-shadow:0 10px 30px rgba(18,52,91,.08)}
html{scroll-behavior:smooth;scroll-padding-top:96px}
body{font-family:"Be Vietnam Pro",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;color:var(--ttp-text);background:#fff;line-height:1.65;-webkit-font-smoothing:antialiased}
h1,h2,h3,h4,h5,h6{font-weight:700;color:var(--ttp-dark);line-height:1.3}
a{color:var(--ttp-primary);text-decoration:none}
a:hover{color:var(--ttp-dark)}
img{max-width:100%;height:auto}
:focus-visible{outline:3px solid var(--ttp-accent);outline-offset:2px}
.skip-link{position:absolute;left:8px;top:8px;z-index:2000;background:#fff;padding:8px 14px;border-radius:8px}
.pending{color:#8a6d1b;font-style:italic}
.hp-field{position:absolute!important;left:-9999px!important;width:1px;height:1px;overflow:hidden}

/* Nút */
.btn{font-weight:600;border-radius:10px;padding:.55rem 1.15rem}
.btn-lg{padding:.75rem 1.5rem;font-size:1rem}
.btn-sm{padding:.4rem .75rem;border-radius:8px;font-size:.85rem}
.btn-primary{--bs-btn-bg:var(--ttp-primary);--bs-btn-border-color:var(--ttp-primary);--bs-btn-hover-bg:var(--ttp-dark);--bs-btn-hover-border-color:var(--ttp-dark);--bs-btn-active-bg:var(--ttp-dark);--bs-btn-active-border-color:var(--ttp-dark)}
.btn-outline-primary{--bs-btn-color:var(--ttp-primary);--bs-btn-border-color:var(--ttp-primary);--bs-btn-hover-bg:var(--ttp-primary);--bs-btn-hover-border-color:var(--ttp-primary);--bs-btn-active-bg:var(--ttp-primary);--bs-btn-active-border-color:var(--ttp-primary)}
.btn-accent{background:var(--ttp-accent);border-color:var(--ttp-accent);color:#1f1300}
.btn-accent:hover,.btn-accent:focus{background:#d98806;border-color:#d98806;color:#1f1300}
.btn-icon{width:42px;height:42px;display:inline-flex;align-items:center;justify-content:center;border-radius:50%;color:var(--ttp-dark);padding:0}
.btn-icon:hover{background:var(--ttp-bg)}
.text-primary{color:var(--ttp-primary)!important}
.link-more{font-weight:600;color:var(--ttp-primary)}

/* Header */
.site-header{position:sticky;top:0;z-index:1030;background:#fff;border-bottom:1px solid var(--ttp-border);transition:box-shadow .2s}
.site-header .navbar{padding:.9rem 0;transition:padding .2s}
.site-header.is-scrolled{box-shadow:0 6px 24px rgba(18,52,91,.1)}
.site-header.is-scrolled .navbar{padding:.45rem 0}
.navbar-brand{display:flex;align-items:center;gap:.6rem;font-weight:800;color:var(--ttp-dark)}
.navbar-brand:hover{color:var(--ttp-dark)}
.brand-mark{width:42px;height:42px;border-radius:12px;background:linear-gradient(135deg,var(--ttp-primary),var(--ttp-dark));color:#fff;display:inline-flex;align-items:center;justify-content:center;font-weight:800;font-size:1.25rem}
.brand-text{font-size:1.15rem;letter-spacing:.3px}
.brand-logo{height:48px;width:auto;transition:height .2s}
.site-header.is-scrolled .brand-logo{height:40px}
.footer-brand .brand-logo{background:#fff;border-radius:12px;padding:5px;height:56px}
@media (max-width:575.98px){.brand-logo{height:40px}.brand-text{font-size:1rem}}
.site-header .nav-link{font-weight:600;color:var(--ttp-text);padding:.5rem .85rem!important;border-radius:8px}
.site-header .nav-link:hover,.site-header .nav-link.active{color:var(--ttp-primary)}
.site-header .nav-link.active{background:rgba(7,86,168,.07)}
.dropdown-menu{border:1px solid var(--ttp-border);border-radius:12px;box-shadow:var(--ttp-shadow);padding:.5rem}
.dropdown-item{border-radius:8px;padding:.45rem .75rem}
.dropdown-item:hover{background:var(--ttp-bg);color:var(--ttp-primary)}
.header-hotline{align-items:center;gap:.5rem;color:var(--ttp-dark);margin-right:.25rem}
.header-hotline span{display:flex;flex-direction:column;line-height:1.15}
.header-hotline small{color:var(--ttp-muted);font-size:.72rem}
.header-search{background:var(--ttp-bg);border-top:1px solid var(--ttp-border);padding:.9rem 0}
.search-inline{display:flex;gap:.5rem;max-width:640px}
.search-inline .form-control{border-radius:10px}
@media (min-width:992px){.site-header .offcanvas{flex-grow:1}.site-header .dropdown:hover>.dropdown-menu{display:block;margin-top:0}}

/* Hero */
.hero{position:relative;background:var(--ttp-dark)}
.hero .carousel-item{position:relative;min-height:clamp(440px,62vh,680px)}
.hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.hero-overlay{position:relative;z-index:1;display:flex;align-items:center;min-height:clamp(440px,62vh,680px);background:linear-gradient(90deg,rgba(11,34,62,.92) 0%,rgba(11,34,62,.72) 45%,rgba(11,34,62,.25) 100%)}
.hero-content{max-width:680px;color:#fff;padding:3rem 0}
.hero-kicker{text-transform:uppercase;letter-spacing:2px;font-size:.8rem;font-weight:600;color:var(--ttp-accent);margin-bottom:.75rem}
.hero-title{color:#fff;font-size:clamp(1.75rem,3.6vw,3rem);font-weight:800;line-height:1.2;margin-bottom:1rem}
.hero-desc{font-size:1.05rem;color:#dbe6f3;margin-bottom:1.5rem;max-width:560px}
.hero-plain{padding:5rem 0;color:#fff}
.page-hero{position:relative;background:linear-gradient(120deg,var(--ttp-dark),var(--ttp-primary));color:#fff;padding:3rem 0;overflow:hidden}
.page-hero h1{color:#fff;font-size:clamp(1.6rem,3vw,2.4rem);font-weight:800;margin-bottom:.5rem}
.page-hero p{color:#dbe6f3;max-width:720px;margin-bottom:0}
.page-hero-img{padding:4.5rem 0}
.page-hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.22}
.breadcrumb-bar{background:var(--ttp-bg);border-bottom:1px solid var(--ttp-border);padding:.65rem 0;font-size:.875rem}
.breadcrumb-item+.breadcrumb-item::before{content:"›"}

/* Khối nội dung */
.section{padding:4.5rem 0}
.section-alt{background:var(--ttp-bg)}
.section-dark{background:linear-gradient(135deg,var(--ttp-dark),#0b2a4d);color:#e6edf6}
.section-dark .section-title{color:#fff}
.section-head{margin-bottom:2.25rem}
.section-kicker{text-transform:uppercase;letter-spacing:2px;font-size:.78rem;font-weight:700;color:var(--ttp-primary);margin-bottom:.4rem}
.section-dark .section-kicker{color:var(--ttp-accent)}
.section-title{font-size:clamp(1.4rem,2.4vw,2rem);font-weight:800;margin-bottom:1rem}
.section-sub{color:var(--ttp-muted);max-width:640px;margin-bottom:0}
.lead-text{font-size:1.05rem;color:#374151}
.about-media img{width:100%;border-radius:var(--ttp-radius);box-shadow:var(--ttp-shadow);aspect-ratio:4/3;object-fit:cover}
.mini-card{background:var(--ttp-bg);border-radius:12px;padding:1rem 1.1rem;height:100%;border-left:4px solid var(--ttp-primary)}
.mini-card h3{font-size:1rem;margin-bottom:.35rem}
.mini-card p{font-size:.92rem;color:var(--ttp-muted);margin:0}
.value-card{background:#fff;border:1px solid var(--ttp-border);border-radius:var(--ttp-radius);padding:1.75rem;box-shadow:var(--ttp-shadow)}
.value-card h2{font-size:1.25rem;color:var(--ttp-primary)}
.sector-line{display:flex;flex-direction:column;gap:.2rem;background:#fff;border:1px solid var(--ttp-border);border-radius:12px;padding:1rem 1.1rem;height:100%;color:var(--ttp-text);transition:border-color .2s,transform .2s}
.sector-line:hover{border-color:var(--ttp-primary);transform:translateY(-2px)}
.sector-line strong{color:var(--ttp-dark)}
.sector-line span{font-size:.9rem;color:var(--ttp-muted)}
.sector-row{padding:1.75rem 0;border-bottom:1px solid var(--ttp-border)}
.sector-row:last-child{border-bottom:0}
.gallery-item img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:12px}

/* Thẻ lĩnh vực / sản phẩm / bài viết */
.sector-card,.product-card,.post-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--ttp-border);border-radius:var(--ttp-radius);overflow:hidden;transition:transform .2s,box-shadow .2s,border-color .2s;color:var(--ttp-text)}
.sector-card{height:100%}
.sector-card:hover,.product-card:hover,.post-card:hover{transform:translateY(-4px);box-shadow:var(--ttp-shadow);border-color:#cfd9e6}
.sector-thumb img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--ttp-radius)}
.sector-card .sector-thumb img{border-radius:0}
.sector-body{padding:1.25rem}
.sector-body h3{font-size:1.15rem;margin-bottom:.4rem}
.sector-body p{color:var(--ttp-muted);font-size:.93rem;margin-bottom:.75rem}
.product-thumb,.post-thumb{position:relative;display:block;background:var(--ttp-bg)}
.product-thumb img{width:100%;aspect-ratio:4/3;object-fit:contain;padding:.5rem}
.post-thumb img{width:100%;aspect-ratio:16/10;object-fit:cover}
.badge-sample{position:absolute;top:10px;left:10px;background:rgba(18,52,91,.85);color:#fff;font-size:.7rem;font-weight:600;padding:.2rem .55rem;border-radius:999px;letter-spacing:.3px}
.product-body,.post-body{display:flex;flex-direction:column;flex:1;padding:1rem 1.1rem 1.15rem}
.product-cat{display:inline-block;font-size:.74rem;font-weight:700;text-transform:uppercase;letter-spacing:.8px;color:var(--ttp-primary);margin-bottom:.35rem}
.product-name{font-size:1rem;margin-bottom:.3rem}
.product-name a,.post-title a{color:var(--ttp-dark)}
.product-name a:hover,.post-title a:hover{color:var(--ttp-primary)}
.product-sku{font-size:.8rem;color:var(--ttp-muted);margin-bottom:.4rem}
.product-desc{font-size:.88rem;color:var(--ttp-muted);margin-bottom:.9rem;flex:1}
.product-actions{display:flex;flex-wrap:wrap;gap:.4rem}
.post-date{font-size:.8rem;color:var(--ttp-muted)}
.post-title{font-size:1.05rem;margin:.3rem 0 .45rem}
.post-excerpt{font-size:.9rem;color:var(--ttp-muted);flex:1}
.why-card{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);border-radius:var(--ttp-radius);padding:1.5rem;height:100%}
.why-card h3{color:#fff;font-size:1.08rem;margin:.6rem 0 .4rem}
.why-card p{color:#c9d6e6;font-size:.93rem;margin:0}
.why-num{font-size:1.6rem;font-weight:800;color:var(--ttp-accent)}
.partner-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:1rem;margin:0}
.partner-grid li{display:flex;align-items:center;justify-content:center;background:#fff;border:1px solid var(--ttp-border);border-radius:12px;padding:1rem;min-height:90px;font-weight:600;text-align:center}
.partner-grid img{max-height:60px;width:auto;object-fit:contain}
.cta-band{background:linear-gradient(120deg,var(--ttp-primary),var(--ttp-dark));color:#fff;padding:3.5rem 0}
.cta-title{color:#fff;font-size:clamp(1.3rem,2.3vw,1.85rem);font-weight:800}
.cta-text{color:#dbe6f3}

/* Danh sách sản phẩm */
.side-card{background:#fff;border:1px solid var(--ttp-border);border-radius:var(--ttp-radius);padding:1.25rem;position:sticky;top:100px}
.cat-tree{margin:0}
.cat-tree a,.side-list a{display:flex;justify-content:space-between;gap:.5rem;padding:.4rem .5rem;border-radius:8px;color:var(--ttp-text);font-size:.93rem}
.cat-tree a:hover,.cat-tree a.active,.side-list a:hover{background:var(--ttp-bg);color:var(--ttp-primary)}
.cat-tree a.active{font-weight:700}
.cat-sub{padding-left:.9rem;border-left:2px solid var(--ttp-border);margin-left:.5rem}
.count{color:var(--ttp-muted);font-size:.8rem}
.filter-bar{background:var(--ttp-bg);border-radius:var(--ttp-radius);padding:1rem;margin-bottom:1rem}
.filter-bar .form-label{font-size:.8rem;font-weight:600;margin-bottom:.25rem}
.result-count{color:var(--ttp-muted);font-size:.9rem}
.empty-state{background:var(--ttp-bg);border-radius:var(--ttp-radius);padding:2.5rem 1.5rem;text-align:center}
.pagination{--bs-pagination-color:var(--ttp-primary);--bs-pagination-active-bg:var(--ttp-primary);--bs-pagination-active-border-color:var(--ttp-primary);gap:.25rem}
.page-link{border-radius:8px!important;min-width:40px;text-align:center}
.chip-nav .nav-link{border:1px solid var(--ttp-border);border-radius:999px;color:var(--ttp-text);margin:0 .4rem .4rem 0;padding:.35rem .9rem;font-size:.9rem;font-weight:600}
.chip-nav .nav-link.active{background:var(--ttp-primary);border-color:var(--ttp-primary)}

/* Chi tiết sản phẩm */
.pd-main{position:relative;background:var(--ttp-bg);border-radius:var(--ttp-radius);overflow:hidden}
.pd-main img{width:100%;aspect-ratio:4/3;object-fit:contain}
.pd-thumbs{display:flex;gap:.5rem;flex-wrap:wrap;margin:.75rem 0 0}
.pd-thumbs button{border:2px solid var(--ttp-border);border-radius:10px;padding:2px;background:#fff;line-height:0}
.pd-thumbs button.active,.pd-thumbs button:hover{border-color:var(--ttp-primary)}
.pd-thumbs img{width:76px;height:57px;object-fit:contain;border-radius:6px}
.pd-title{font-size:clamp(1.4rem,2.4vw,2rem);font-weight:800;margin:.25rem 0 .9rem}
.pd-meta{display:flex;flex-wrap:wrap;gap:.5rem 1.75rem;margin-bottom:1rem}
.pd-meta dt{font-size:.75rem;color:var(--ttp-muted);font-weight:500;text-transform:uppercase;letter-spacing:.5px}
.pd-meta dd{margin:0;font-weight:600}
.pd-actions{display:flex;flex-wrap:wrap;gap:.6rem;margin:1.25rem 0}
.pd-note,.pd-docs{background:var(--ttp-bg);border-radius:12px;padding:1rem 1.1rem;margin-top:1rem;font-size:.93rem}
.pd-section{margin-bottom:2.5rem}
.pd-section h2{font-size:1.35rem;padding-bottom:.6rem;border-bottom:2px solid var(--ttp-border);margin-bottom:1.1rem}
.spec-table th{width:42%;font-weight:600;color:var(--ttp-muted);background:var(--ttp-bg);font-size:.9rem}
.spec-table td{font-size:.93rem}
.faq-accordion .accordion-item{border:1px solid var(--ttp-border);border-radius:12px!important;margin-bottom:.6rem;overflow:hidden}
.faq-accordion .accordion-button{font-weight:600;color:var(--ttp-dark)}
.faq-accordion .accordion-button:not(.collapsed){background:rgba(7,86,168,.06);color:var(--ttp-primary);box-shadow:none}

/* Bài viết & nội dung soạn thảo */
.rich-text{font-size:1.02rem}
.rich-text h2{font-size:1.4rem;margin:1.8rem 0 .8rem}
.rich-text h3{font-size:1.15rem;margin:1.4rem 0 .6rem}
.rich-text img{border-radius:12px;margin:1rem 0}
.rich-text table{width:100%;border-collapse:collapse;margin:1rem 0;display:block;overflow-x:auto}
.rich-text th,.rich-text td{border:1px solid var(--ttp-border);padding:.5rem .75rem}
.rich-text blockquote{border-left:4px solid var(--ttp-primary);background:var(--ttp-bg);padding:.9rem 1.1rem;border-radius:0 10px 10px 0;margin:1rem 0}
.rich-text iframe{max-width:100%;border:0;border-radius:12px}
.post-header h1{font-size:clamp(1.6rem,3vw,2.3rem);font-weight:800;margin:.4rem 0 .6rem}
.post-meta{color:var(--ttp-muted);font-size:.9rem;display:flex;flex-wrap:wrap;gap:.4rem;align-items:center}
.post-cover img{width:100%;border-radius:var(--ttp-radius);aspect-ratio:16/9;object-fit:cover;margin:1rem 0 1.5rem}
.toc{background:var(--ttp-bg);border-radius:12px;padding:1.1rem 1.25rem;margin-bottom:1.75rem}
.toc-title{font-weight:700;color:var(--ttp-dark);margin-bottom:.4rem}
.toc ol{margin:0;padding-left:1.2rem}
.toc .toc-l3{margin-left:1rem;font-size:.93rem}
.check-list{list-style:none;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:.5rem}
.check-list li{padding-left:1.6rem;position:relative}
.check-list li::before{content:"✓";position:absolute;left:0;color:var(--ttp-primary);font-weight:800}

/* Form */
.form-card{background:#fff;border:1px solid var(--ttp-border);border-radius:var(--ttp-radius);padding:1.75rem;box-shadow:var(--ttp-shadow)}
.form-label{font-weight:600;font-size:.9rem}
.form-control,.form-select{border-radius:10px;border-color:#cfd6e0;padding:.6rem .85rem}
.form-control:focus,.form-select:focus{border-color:var(--ttp-primary);box-shadow:0 0 0 .2rem rgba(7,86,168,.15)}
.form-alert{border-radius:10px;padding:.75rem 1rem;margin-bottom:1rem;font-size:.93rem}
.form-alert.is-error{background:#fdecec;color:#8f1d1d;border:1px solid #f5c2c2}
.form-alert.is-success{background:#e8f6ee;color:#14532d;border:1px solid #b7e2c7}
.contact-list li{padding:.75rem 0;border-bottom:1px solid var(--ttp-border)}
.contact-list span:first-child{display:block;font-size:.75rem;text-transform:uppercase;letter-spacing:.6px;color:var(--ttp-muted);font-weight:600}
.contact-map iframe,.footer-map iframe{width:100%;height:320px;border:0;border-radius:var(--ttp-radius)}

/* Footer */
.site-footer{background:#0b2240;color:#c5d2e2;padding:3.5rem 0 1.25rem;font-size:.93rem}
.site-footer a{color:#dfe8f3}
.site-footer a:hover{color:var(--ttp-accent)}
.footer-brand{display:flex;align-items:center;gap:.6rem;margin-bottom:1rem}
.footer-brand .brand-text{color:#fff;font-weight:800;font-size:1.15rem}
.footer-title{color:#fff;font-size:1rem;font-weight:700;margin-bottom:1rem}
.footer-links li{margin-bottom:.45rem}
.footer-contact li{margin-bottom:.55rem}
.footer-contact span:first-child{color:#8fa3bb}
.site-footer .pending{color:#e9c877}
.footer-social a{border:1px solid rgba(255,255,255,.2);border-radius:999px;padding:.25rem .8rem;font-size:.85rem}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);margin-top:2.5rem;padding-top:1.25rem;display:flex;flex-wrap:wrap;gap:.5rem 1.5rem;justify-content:space-between;font-size:.85rem}

/* Nút liên hệ nổi */
.floating-contact{position:fixed;right:16px;bottom:16px;z-index:1020;display:flex;flex-direction:column;gap:.55rem}
.fc-btn{width:48px;height:48px;border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;border:0;box-shadow:0 6px 18px rgba(0,0,0,.22);font-size:.72rem;font-weight:800;transition:transform .15s}
.fc-btn:hover{transform:scale(1.08);color:#fff}
.fc-zalo{background:#0068ff}.fc-mess{background:#a334fa}.fc-mail{background:#4b5563}.fc-call{background:#16a34a}.fc-quote{background:var(--ttp-accent);color:#1f1300}
.fc-quote:hover{color:#1f1300}

@media (max-width:991.98px){.section{padding:3.25rem 0}.side-card{position:static}.hero-overlay{background:linear-gradient(180deg,rgba(11,34,62,.88),rgba(11,34,62,.78))}}
@media (max-width:575.98px){.product-body{padding:.8rem}.product-actions .btn{flex:1 1 100%}.pd-actions .btn{flex:1 1 100%}.floating-contact{right:10px;bottom:10px}.fc-btn{width:44px;height:44px}.form-card{padding:1.25rem}}
@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}.carousel-item{transition:none!important}}
@media print{.site-header,.site-footer,.floating-contact,.cta-band,.breadcrumb-bar{display:none!important}}