:root { --green:#00a859; --green-dark:#047044; --navy:#0b1e2d; --muted:#607080; --line:#dce5e9; --surface:#f5f8f7; }
* { box-sizing:border-box; }
body { margin:0; color:var(--navy); background:#fff; font:16px/1.75 "Be Vietnam Pro",sans-serif; }
a { color:inherit; }
img { display:block; max-width:100%; }
.content-header { min-height:78px; display:flex; align-items:center; justify-content:space-between; gap:24px; padding:12px max(24px,calc((100vw - 1180px)/2)); border-bottom:1px solid var(--line); position:sticky; top:0; z-index:10; background:rgba(255,255,255,.96); backdrop-filter:blur(12px); }
.content-brand { display:flex; align-items:center; gap:10px; text-decoration:none; }
.content-brand img { width:46px; height:46px; object-fit:contain; }
.content-brand span { display:flex; flex-direction:column; line-height:1.2; }
.content-brand strong { font-size:1.1rem; }
.content-brand small { color:var(--green-dark); font-size:.7rem; text-transform:uppercase; letter-spacing:.08em; }
.content-header nav { display:flex; align-items:center; gap:22px; }
.content-header nav a { text-decoration:none; font-weight:600; font-size:.92rem; }
.content-header .contact-link,.primary-cta { color:#fff; background:var(--green); border-radius:10px; padding:10px 18px; text-decoration:none; font-weight:700; }
.content-main { max-width:1180px; margin:0 auto; padding:40px 24px 28px; }
.breadcrumb { display:flex; flex-wrap:wrap; gap:9px; color:var(--muted); font-size:.86rem; margin-bottom:32px; }
.breadcrumb a { text-decoration:none; }
.product-detail { display:grid; grid-template-columns:minmax(0,1fr) minmax(320px,.85fr); gap:58px; align-items:start; }
.detail-image { background:var(--surface); border-radius:22px; overflow:hidden; aspect-ratio:1; }
.detail-image img { width:100%; height:100%; object-fit:cover; }
.eyebrow,.card-category { display:inline-block; color:var(--green-dark); font-size:.78rem; font-weight:800; letter-spacing:.08em; text-transform:uppercase; }
h1 { font-size:clamp(2rem,5vw,3.5rem); line-height:1.15; margin:12px 0 18px; }
.lead { color:var(--muted); font-size:1.08rem; }
dl { margin:28px 0; border-top:1px solid var(--line); }
dl div { display:flex; justify-content:space-between; gap:20px; padding:13px 0; border-bottom:1px solid var(--line); }
dt { color:var(--muted); } dd { margin:0; font-weight:700; text-align:right; }
.primary-cta { display:inline-block; margin-top:4px; }
.rich-content { max-width:820px; margin:56px auto 0; font-size:1.03rem; }
.rich-content h2 { margin-top:2.2em; font-size:1.65rem; line-height:1.3; }
.rich-content h3 { margin-top:1.8em; }
.rich-content img { border-radius:14px; margin:24px auto; }
.article-main { max-width:940px; }
.article-hero { text-align:center; max-width:820px; margin:35px auto; }
.article-hero time { color:var(--muted); font-size:.85rem; }
.article-cover { margin:38px 0 0; border-radius:22px; overflow:hidden; max-height:520px; }
.article-cover img { width:100%; height:100%; object-fit:cover; }
.listing-hero { max-width:760px; padding:36px 0 32px; }
.listing-hero p { color:var(--muted); font-size:1.08rem; }
.content-grid { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:24px; }
.content-card { border:1px solid var(--line); border-radius:18px; overflow:hidden; background:#fff; }
.card-image { display:block; aspect-ratio:4/3; overflow:hidden; background:var(--surface); }
.card-image img { width:100%; height:100%; object-fit:cover; transition:transform .25s; }
.content-card:hover .card-image img { transform:scale(1.03); }
.content-card > div { padding:20px; }
.content-card h2 { font-size:1.15rem; line-height:1.4; margin:8px 0; }
.content-card h2 a,.read-more { text-decoration:none; }
.content-card p { color:var(--muted); font-size:.92rem; margin:0 0 14px; }
.read-more { color:var(--green-dark); font-weight:700; }

/* --- ARTICLE META & BADGES --- */
.article-meta-row { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 16px; margin-top: 14px; font-size: 0.88rem; color: var(--muted); }
.article-meta-item { display: inline-flex; align-items: center; gap: 6px; }

/* --- ARTICLE TAGS --- */
.article-tags-wrap { max-width: 820px; margin: 40px auto 0; padding-top: 24px; border-top: 1px dashed var(--line); display: flex; flex-direction: column; gap: 12px; }
.tags-header { display: flex; align-items: center; gap: 8px; font-weight: 700; font-size: 0.95rem; color: var(--navy); }
.article-tags-list { display: flex; flex-wrap: wrap; gap: 8px; }
.tag-pill { display: inline-flex; align-items: center; gap: 4px; padding: 6px 14px; border-radius: 999px; background: #eef8f2; color: var(--green-dark); border: 1px solid #c7e8d5; font-size: 0.85rem; font-weight: 600; text-decoration: none; transition: all .2s ease; }
.tag-pill:hover { background: var(--green); color: #fff; border-color: var(--green); transform: translateY(-1px); box-shadow: 0 4px 10px rgba(0,168,89,0.2); }

/* --- B2B CTA BOX --- */
.article-cta-box { max-width: 820px; margin: 44px auto 0; background: linear-gradient(135deg, #09261a 0%, #0b1e2d 100%); border-radius: 20px; padding: 36px 32px; color: #fff; position: relative; overflow: hidden; box-shadow: 0 12px 32px rgba(11,30,45,0.18); }
.article-cta-box::before { content: ""; position: absolute; top: -50px; right: -50px; width: 180px; height: 180px; background: radial-gradient(circle, rgba(0,168,89,0.3) 0%, transparent 70%); pointer-events: none; }
.cta-badge { display: inline-block; background: rgba(0,168,89,0.25); color: #4ade80; border: 1px solid rgba(74,222,128,0.35); padding: 4px 12px; border-radius: 999px; font-size: 0.78rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 12px; }
.cta-title { font-size: 1.45rem; font-weight: 800; line-height: 1.35; margin: 0 0 10px; color: #fff; }
.cta-desc { font-size: 0.95rem; line-height: 1.6; color: #cbd5e1; margin: 0 0 24px; max-width: 680px; }
.cta-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.cta-btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 12px 22px; border-radius: 10px; font-weight: 700; font-size: 0.92rem; text-decoration: none; transition: all .2s ease; }
.cta-btn-zalo { background: #0068ff; color: #fff; box-shadow: 0 4px 14px rgba(0,104,255,0.35); }
.cta-btn-zalo:hover { background: #0055d4; transform: translateY(-2px); }
.cta-btn-phone { background: var(--green); color: #fff; box-shadow: 0 4px 14px rgba(0,168,89,0.35); }
.cta-btn-phone:hover { background: #00924c; transform: translateY(-2px); }
.cta-btn-catalog { background: rgba(255,255,255,0.12); color: #fff; border: 1px solid rgba(255,255,255,0.25); backdrop-filter: blur(8px); }
.cta-btn-catalog:hover { background: rgba(255,255,255,0.22); transform: translateY(-2px); }

/* --- RELATED ARTICLES SECTION --- */
.article-related-section { max-width: 940px; margin: 44px auto 0; padding-top: 36px; border-top: 1px solid var(--line); }
.related-header { margin-bottom: 24px; }
.related-header .eyebrow { margin-bottom: 6px; }
.related-header h2 { font-size: 1.55rem; font-weight: 800; margin: 0 0 8px; color: var(--navy); }
.related-header p { color: var(--muted); margin: 0; font-size: 0.95rem; }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.related-card { background: #fff; border: 1px solid var(--line); border-radius: 16px; overflow: hidden; display: flex; flex-direction: column; transition: all .25s ease; }
.related-card:hover { transform: translateY(-4px); box-shadow: 0 12px 24px rgba(0,0,0,0.08); border-color: #bbf7d0; }
.related-thumb { display: block; aspect-ratio: 16/10; overflow: hidden; background: var(--surface); position: relative; }
.related-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .35s ease; }
.related-card:hover .related-thumb img { transform: scale(1.05); }
.related-body { padding: 18px 16px 20px; display: flex; flex-direction: column; flex: 1; }
.related-badge { display: inline-block; font-size: 0.72rem; font-weight: 800; color: var(--green-dark); text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 6px; }
.related-title { font-size: 1.02rem; font-weight: 700; line-height: 1.4; margin: 0 0 8px; color: var(--navy); }
.related-title a { text-decoration: none; color: inherit; transition: color .2s; }
.related-title a:hover { color: var(--green-dark); }
.related-excerpt { font-size: 0.86rem; color: var(--muted); line-height: 1.55; margin: 0 0 14px; flex: 1; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.related-footer { display: flex; align-items: center; justify-content: space-between; font-size: 0.82rem; padding-top: 10px; border-top: 1px solid #edf2f4; }
.related-date { color: var(--muted); }
.related-link { color: var(--green-dark); font-weight: 700; text-decoration: none; }

/* --- FULL SITE FOOTER (Fresh, Elegant Brand Theme) --- */
.site-footer { background: #f4faf6; color: #334155; font-size: 0.9rem; line-height: 1.65; margin-top: 24px; border-top: 1px solid #dcfce7; }
.footer-container { max-width: 1180px; margin: 0 auto; padding: 44px 24px 32px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1.1fr 1fr 1.1fr; gap: 36px; }
.footer-col { display: flex; flex-direction: column; }
.footer-brand-logo { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; color: #064e3b; margin-bottom: 14px; }
.footer-brand-logo img { width: 46px; height: 46px; object-fit: contain; }
.footer-brand-logo span { display: flex; flex-direction: column; line-height: 1.2; }
.footer-brand-logo strong { font-size: 1.25rem; font-weight: 800; color: #064e3b; }
.footer-brand-logo small { font-size: 0.72rem; color: var(--green-dark); text-transform: uppercase; letter-spacing: 0.06em; font-weight: 700; }
.footer-company-name { font-weight: 800; font-size: 0.85rem; color: #0f172a; text-transform: uppercase; letter-spacing: 0.02em; margin: 0 0 10px; line-height: 1.4; }
.footer-desc { font-size: 0.85rem; color: #475569; margin: 0 0 20px; line-height: 1.6; }
.footer-social-row { display: flex; align-items: center; gap: 12px; margin-top: auto; }
.social-btn { display: inline-flex; align-items: center; justify-content: center; width: 40px; height: 40px; border-radius: 50%; background: #facc15; border: 2px solid #fff; box-shadow: 0 3px 8px rgba(0,0,0,0.12); color: #0f172a; text-decoration: none; transition: all .2s; }
.social-btn:hover { transform: translateY(-2px) scale(1.05); box-shadow: 0 6px 14px rgba(0,0,0,0.16); }
.social-btn.facebook { color: #1877f2; }
.social-btn.tiktok { color: #0f172a; }
.social-btn.zalo { color: #0284c7; font-weight: 800; font-size: 0.78rem; }

.footer-title { font-size: 1.05rem; font-weight: 700; color: #064e3b; margin: 0 0 18px; position: relative; padding-bottom: 8px; }
.footer-title::after { content: ""; position: absolute; left: 0; bottom: 0; width: 34px; height: 3px; background: var(--green); border-radius: 2px; }

.footer-contact-list { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 14px; }
.footer-contact-list li { display: flex; align-items: flex-start; gap: 10px; font-size: 0.86rem; color: #475569; }
.footer-contact-list .contact-icon { font-size: 1.1rem; line-height: 1.3; flex-shrink: 0; }
.footer-contact-list strong { display: block; color: #0f172a; font-weight: 700; margin-bottom: 2px; }
.footer-contact-list a { color: var(--green-dark); text-decoration: none; font-weight: 700; }
.footer-contact-list a:hover { text-decoration: underline; color: #047857; }

.footer-links { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 10px; }
.footer-links li a { color: #475569; text-decoration: none; font-size: 0.86rem; font-weight: 500; transition: color .15s, transform .15s; display: inline-block; }
.footer-links li a:hover { color: var(--green-dark); font-weight: 600; transform: translateX(4px); }

.footer-disclaimer { background: #fff; border: 1px solid #d1fae5; border-radius: 12px; padding: 18px; font-size: 0.82rem; color: #475569; line-height: 1.6; box-shadow: 0 2px 8px rgba(0,0,0,0.03); }
.footer-disclaimer p { margin: 0 0 10px; }
.footer-disclaimer strong { color: #064e3b; font-weight: 700; }
.footer-cta-btn { display: inline-flex; align-items: center; justify-content: center; margin-top: 8px; width: 100%; text-align: center; background: var(--green); color: #fff; font-weight: 700; padding: 10px 14px; border-radius: 8px; text-decoration: none; font-size: 0.86rem; transition: all .2s; }
.footer-cta-btn:hover { background: #00924c; transform: translateY(-1px); box-shadow: 0 4px 10px rgba(0,168,89,0.25); }

.footer-bottom { border-top: 1px solid #dcfce7; background: #e8f5ed; }
.footer-bottom-container { max-width: 1180px; margin: 0 auto; padding: 18px 24px; display: flex; align-items: center; justify-content: space-between; gap: 20px; font-size: 0.82rem; color: #64748b; }
.footer-bottom a { color: var(--green-dark); text-decoration: none; font-weight: 700; }
.footer-bottom a:hover { text-decoration: underline; }

/* --- FLOATING CONTACT WIDGETS --- */
.nexa-floating-contact-left { position: fixed; left: 18px; bottom: 24px; z-index: 99; display: flex; flex-direction: column; gap: 10px; }
.nexa-float-btn { width: 44px; height: 44px; border-radius: 10px; background: #007d48; display: flex; align-items: center; justify-content: center; text-decoration: none; box-shadow: 0 4px 14px rgba(0,0,0,0.25); transition: transform .2s; }
.nexa-float-btn:hover { transform: scale(1.08); }

.nexa-floating-contact-right { position: fixed; right: 18px; bottom: 24px; z-index: 99; display: flex; flex-direction: column; align-items: center; }
.nexa-float-zalo-link { display: flex; flex-direction: column; align-items: center; text-decoration: none; }
.nexa-zalo-icon-box { width: 44px; height: 44px; border-radius: 10px; overflow: hidden; box-shadow: 0 4px 14px rgba(0,104,255,0.35); display: flex; align-items: center; justify-content: center; transition: transform .2s; }
.nexa-float-zalo-link:hover .nexa-zalo-icon-box { transform: scale(1.08); }
.nexa-zalo-time-badge { display: inline-block; margin-top: 4px; padding: 2px 7px; border-radius: 999px; background: #fff; border: 1px solid #bfdbfe; color: #0068ff; font-size: 10px; font-weight: 700; line-height: 1.2; box-shadow: 0 2px 6px rgba(0,104,255,0.12); }

/* Legacy compatibility */
.content-footer { display:none; }

@media (max-width:992px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .related-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width:800px) {
  .content-header nav a:not(.contact-link){display:none}
  .product-detail{grid-template-columns:1fr;gap:28px}
  .content-grid{grid-template-columns:1fr 1fr}
  .content-main{padding-top:24px}
}

@media (max-width:680px) {
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-container { padding: 40px 16px 30px; }
  .footer-bottom-container { flex-direction: column; text-align: center; gap: 10px; padding: 16px; }
  .related-grid { grid-template-columns: 1fr; }
  .article-cta-box { padding: 26px 18px; }
  .cta-title { font-size: 1.22rem; }
  .cta-actions { flex-direction: column; }
  .cta-btn { width: 100%; }
  .article-hero { text-align: left; }
  .article-meta-row { justify-content: flex-start; }
}

@media (max-width:560px) {
  html, body { max-width: 100%; overflow-x: clip; }
  .content-grid{grid-template-columns:1fr}
  .content-brand small{display:none}
  .detail-summary h1{font-size:2rem}
  .content-header { min-height: 66px; gap: 12px; padding: 10px 14px; }
  .content-brand img { width: 38px; height: 38px; }
  .content-brand strong { font-size: .95rem; }
  .content-header .contact-link { padding: 9px 12px; font-size: .78rem; white-space: nowrap; }
  .content-main { padding: 22px 14px 62px; }
  .breadcrumb { flex-wrap: nowrap; margin: 0 -14px 22px; padding: 0 14px 10px; overflow-x: auto; white-space: nowrap; scrollbar-width: none; }
  .breadcrumb::-webkit-scrollbar { display: none; }
  .article-hero { margin: 22px auto; text-align: left; }
  .article-hero h1, .listing-hero h1, .detail-summary h1 { font-size: clamp(1.75rem, 8.5vw, 2.2rem); overflow-wrap: anywhere; }
  .lead, .listing-hero p { font-size: .98rem; }
  .article-cover { margin-top: 24px; border-radius: 14px; }
  .rich-content { margin-top: 34px; font-size: .98rem; line-height: 1.78; overflow-wrap: anywhere; }
  .rich-content h2 { font-size: 1.38rem; }
  .rich-content h3 { font-size: 1.15rem; }
  .rich-content img { max-width: 100%; height: auto; border-radius: 10px; }
  dl div { display: grid; grid-template-columns: 38% 1fr; gap: 12px; }
  dd { min-width: 0; overflow-wrap: anywhere; }
  .content-card > div { padding: 16px; }
}