/* Năm Châu — CSS nền. Phần 1: chép từ khối <style> của demo/preview/Main.html (demo chỉ đọc, không sửa). */
body{margin:0;background:#fff} /* Mọi trang nền trắng (chốt 2026-10-31). */
*,*::before,*::after{box-sizing:border-box}
a{color:#c2410c}a:hover{color:#a8420a}
:focus-visible{outline:2px solid #c2410c;outline-offset:2px}
.screen-reader-text{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip-link:focus{position:fixed;left:16px;top:16px;width:auto;height:auto;clip:auto;z-index:10;background:#fff;padding:12px 16px;border-radius:8px}
.nc-wrap{max-width:1200px;margin:0 auto;padding-left:32px;padding-right:32px}
.nc-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:10px 20px;border-radius:8px;border:1px solid #c84d0b;background:#c84d0b;color:#fff;font-family:inherit;font-size:16px;line-height:24px;font-weight:600;text-decoration:none;cursor:pointer;transition:background-color .15s}
.nc-btn:hover{background:#a8420a;border-color:#a8420a;color:#fff}
.nc-btn--ghost{background:#fff;color:#c2410c}
.nc-btn--ghost:hover{background:#fff4eb;color:#a8420a}
.nc-card{background:#fff;border:1px solid #ebe4da;border-radius:12px;box-shadow:0 1px 2px rgba(20,26,36,.04);transition:box-shadow .15s}
a.nc-card{color:inherit;text-decoration:none}a.nc-card:hover{color:inherit;box-shadow:0 8px 24px rgba(20,26,36,.08)}
.nc-ph{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;background:#f4f1ec;border-radius:8px;color:#5b6270;font-size:13px;line-height:18px;text-align:center;padding:12px}
.nc-input{display:block;width:100%;min-height:44px;padding:10px 16px;border:1px solid #8f877c;border-radius:8px;background:#fff;font-family:inherit;font-size:16px;line-height:24px;color:#141a24}
.nc-input::placeholder{color:#6b7280}
.nc-link{display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:15px;text-decoration:none}
.nc-h1{margin:0;font-size:44px;line-height:52px;font-weight:800;letter-spacing:-.015em}
.nc-sec{display:flex;align-items:center;gap:12px;margin:0;font-size:28px;line-height:36px;font-weight:700;letter-spacing:-.01em}
.nc-sec::before{content:"";flex:none;width:4px;height:26px;border-radius:2px;background:#f97316}
@media (max-width:720px){.nc-wrap{padding-left:16px;padding-right:16px}.nc-h1{font-size:32px;line-height:40px}.nc-sec{font-size:24px;line-height:32px}}
.nc-masthead__brand:hover .nc-wordmark{color:#c2410c}
.nc-nav__link{transition:color .15s,border-color .15s}
.nc-nav__link:not([aria-current]):hover{color:#c2410c!important;border-bottom-color:#fde3cf!important}
.nc-footer__link{transition:color .15s}
.nc-footer__link:hover{color:#c2410c!important;text-decoration:underline!important;text-underline-offset:3px}
nav[aria-label="Breadcrumb"] a:hover{color:#c2410c!important;text-decoration:underline!important;text-underline-offset:3px}
.nc-link:hover{text-decoration:underline;text-underline-offset:3px}
.nc-link svg{transition:transform .15s}.nc-link:hover svg{transform:translateX(3px)}
a.nc-card{transition:box-shadow .15s,transform .15s,border-color .15s}a.nc-card:hover{transform:translateY(-2px);border-color:#fde3cf}
a.page-numbers:hover{border-color:#c84d0b!important;color:#c2410c!important}
.nc-chip:not([aria-pressed="true"]):hover,.nc-az:not([aria-pressed="true"]):hover,.nc-tabbtn:not([aria-selected="true"]):hover,.nc-model:not([aria-pressed="true"]):hover,.nc-thumb:not([aria-pressed="true"]):hover{border-color:#c84d0b;color:#c2410c;background:#fff}
.nc-tab:not([aria-selected="true"]):hover{color:#141a24;border-bottom-color:#ebe4da}
main a:not([class]):hover{text-decoration-thickness:2px;text-underline-offset:3px}
.nc-grid--12,.nc-grid--6{grid-template-columns:repeat(6,minmax(0,1fr))!important}
.nc-grid--4{grid-template-columns:repeat(4,minmax(0,1fr))!important}
.nc-grid--prod,.nc-grid--3,.nc-grid--3v{grid-template-columns:repeat(3,minmax(0,1fr))!important}
@media (max-width:900px){.nc-grid--3{grid-template-columns:minmax(0,1fr)!important}}
@media (max-width:820px){.nc-grid--12{grid-template-columns:repeat(4,minmax(0,1fr))!important}.nc-grid--6{grid-template-columns:repeat(3,minmax(0,1fr))!important}.nc-grid--4{grid-template-columns:repeat(2,minmax(0,1fr))!important}}
@media (max-width:720px){.nc-hero .nc-ph,.page-header .nc-ph{min-height:160px!important}.nc-nav ul{flex-wrap:nowrap!important;justify-content:flex-start!important;overflow-x:auto;scrollbar-width:none}.nc-nav li{flex:none}}
@media (max-width:560px){.nc-grid--12,.nc-grid--6,.nc-grid--4,.nc-grid--prod{grid-template-columns:repeat(2,minmax(0,1fr))!important;gap:12px!important}.nc-grid--3v{grid-template-columns:minmax(0,1fr)!important}}
@media (pointer:coarse){.nc-footer__link{padding-top:11px!important;padding-bottom:11px!important}nav[aria-label="Breadcrumb"] a{display:inline-block;padding:13px 0;margin:-13px 0}.nc-link{min-height:44px}.nc-toc a{padding:11px 12px}}
@media (max-width:720px){.nc-masthead__row{grid-template-columns:minmax(0,1fr)!important;justify-items:center;padding-left:16px!important;padding-right:16px!important}.nc-masthead__brand{order:-1}.nc-masthead__search{max-width:none!important;justify-self:stretch!important}.nc-masthead__actions{justify-self:center!important;justify-content:center!important}.nc-nav{padding-left:16px!important;padding-right:16px!important}.nc-nav ul{gap:0 20px!important}}
@media (prefers-reduced-motion:reduce){*{transition:none!important}a.nc-card:hover,.nc-link:hover svg{transform:none}}

/* Phần 2: khung trang, header, footer — chuyển từ inline style của demo sang class. */
body{color:#141a24;font-family:'Be Vietnam Pro','Segoe UI',system-ui,sans-serif;font-size:16px;line-height:26px}
img{max-width:100%;height:auto}
.site{min-height:100vh;display:flex;flex-direction:column}
.site-main{flex:1}

.site-header{background:#fff;border-bottom:1px solid #ebe4da}
.nc-masthead__row{max-width:1200px;margin:0 auto;padding:6px 32px 16px;display:grid;grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);align-items:center;gap:16px 24px}
.nc-masthead__search{justify-self:start;width:100%;max-width:200px}
.nc-masthead__field{display:flex;align-items:center;gap:8px;height:44px;padding:0 16px;border:1px solid #8f877c;border-radius:999px;background:#fff;color:#5b6270}
.nc-masthead__field input{flex:1;min-width:0;height:42px;border:0;background:transparent;font-family:inherit;font-size:15px;color:#141a24}
.nc-masthead__field input:focus{outline:none}
.nc-masthead__field:focus-within{outline:2px solid #c2410c;outline-offset:2px}
.nc-masthead__brand{justify-self:center;display:flex;align-items:center;gap:12px;color:#141a24;text-decoration:none}
.nc-masthead__brand .custom-logo{display:block;max-height:104px;width:auto}
.nc-logo--mobile{display:none!important}
@media (max-width:720px){.nc-logo--desktop{display:none!important}.nc-logo--mobile{display:block!important;max-height:44px}}
.nc-wordmark-wrap{display:flex;flex-direction:column;align-items:center}
.nc-wordmark{font-family:'Playfair Display','Times New Roman',Georgia,serif;font-size:28px;line-height:32px;font-weight:700;letter-spacing:.02em}
.nc-tagline{font-family:'Playfair Display','Times New Roman',Georgia,serif;font-size:10px;line-height:14px;font-weight:600;letter-spacing:.42em;margin-right:-.42em;color:#5b6270}
.nc-masthead__actions{justify-self:end;display:flex;flex-wrap:wrap;align-items:center;justify-content:flex-end;gap:8px 20px}
/* Hotline lớn + Kết nối với chúng tôi + nút tròn mạng xã hội (Downloads/hotline.png) */
.nc-masthead__connect{flex-direction:column;flex-wrap:nowrap;align-items:flex-end;gap:6px}
.nc-masthead__hotline{display:block;color:#c2410c;font-family:'Barlow Condensed',Impact,sans-serif;font-weight:800;font-size:34px;line-height:1;letter-spacing:.02em;text-decoration:none;white-space:nowrap}
.nc-masthead__hotline:hover{color:#c98a0c}
.nc-masthead__connect-label{margin:0;color:#6b7482;font-size:12px;line-height:16px;font-weight:500;letter-spacing:.22em;text-transform:uppercase;white-space:nowrap}
.nc-masthead__social{list-style:none;margin:2px 0 0;padding:0;display:flex;gap:9px}
.nc-masthead__social a{display:grid;place-items:center;width:40px;height:40px;border-radius:50%;background:#1a1a1a;color:#fff;transition:background-color .15s}
.nc-masthead__social a:hover{background:#e8a317;color:#1a1a1a}
@media (max-width:1024px){.nc-masthead__hotline{font-size:28px}.nc-masthead__connect-label{letter-spacing:.14em}}
@media (max-width:720px){.nc-masthead__connect{align-items:center}}
.nc-nav{max-width:1200px;margin:0 auto;padding:0 32px}
.nc-nav ul{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;justify-content:center;gap:0 36px}
.nc-nav li{margin:0;position:relative}
.nc-nav a{display:inline-flex;align-items:center;gap:4px;min-height:48px;font-size:15px;font-weight:500;color:#141a24;text-decoration:none;border-bottom:2px solid transparent}
.nc-nav .current-menu-item>a,.nc-nav .current-menu-ancestor>a,.nc-nav a[aria-current]{color:#c2410c;font-weight:600;border-bottom-color:#f97316}
.nc-nav a:hover{color:#c2410c}
/* Menu con: hiện khi hover/focus (không cần JS); mobile cuộn ngang menu cấp 1, menu con ẩn */
.nc-nav .sub-menu{display:none;position:absolute;left:0;top:100%;z-index:20;min-width:260px;flex-direction:column;gap:0;padding:8px 0;background:#fff;border:1px solid #ebe4da;border-radius:8px;box-shadow:0 8px 24px rgba(20,26,36,.08)}
.nc-nav li:hover>.sub-menu,.nc-nav li:focus-within>.sub-menu{display:flex}
.nc-nav .sub-menu a{display:flex;min-height:40px;padding:0 16px;border:0;font-size:14px}

/* Footer theo thiết kế v2 (.s-foot), màu v2: cam #f28a13, navy #061d38, ink #121a26, muted #5d6878, viền #e1e6ec */
.site-footer{margin-top:56px;background:#fff;border-top:3px solid #f28a13}
.nc-footer__grid{max-width:1200px;margin:0 auto;padding:36px 32px 28px;display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:24px}
.nc-footer__about{display:flex;flex-direction:column;gap:10px}
.nc-footer__brand{display:inline-flex;align-self:flex-start;align-items:center;gap:10px;color:#121a26;text-decoration:none}
.nc-footer__brand .nc-wordmark-wrap{align-items:flex-start}
.nc-footer__brand .nc-wordmark{font-size:19px;line-height:22px}
.nc-footer__brand .nc-tagline{font-size:9px;letter-spacing:.28em}
.nc-footer__logo{display:block;max-height:80px;width:auto}
.nc-footer__desc,.nc-footer__nap{margin:0;font-size:14px;line-height:20px;font-style:normal;color:#5d6878}
.nc-footer__contact{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:6px}
.nc-footer__contact li{display:flex;align-items:flex-start;gap:8px}
.nc-footer__contact svg{flex:none;margin-top:2px;color:#c95d0b}
.nc-footer__nap a{color:inherit;text-decoration:none}
.nc-footer__nap a:hover{color:#061d38;text-decoration:underline;text-underline-offset:3px}
.nc-footer__nap strong{color:#121a26}
.nc-footer__col{padding-left:24px;border-left:1px solid #e1e6ec}
.nc-footer__title{margin:0 0 10px;font-size:15px;line-height:22px;font-weight:700;color:#121a26}
.nc-footer__col ul{list-style:none;margin:0;padding:0}
.nc-footer__col a{display:flex;align-items:center;justify-content:space-between;gap:8px;min-height:34px;font-size:14px;line-height:20px;color:#5d6878;text-decoration:none}
.nc-footer__col a:hover{color:#061d38;text-decoration:underline;text-underline-offset:3px}
nav.nc-footer__col a::after{content:"›";content:"›"/"";flex:none}
.nc-footer__social{list-style:none;margin:0;padding:0;display:flex;flex-direction:column}
.nc-footer__col .nc-footer__social a{justify-content:flex-start;gap:6px}
.nc-footer__social i{flex:none;display:grid;place-items:center;width:26px;height:26px;border-radius:50%;background:#5d6878;color:#fff;font-style:normal;font-weight:700;font-size:11px;line-height:1}
.nc-footer__social--zalo i{background:#0068ff}
.nc-footer__social--messenger i{background:#0866ff}
.nc-footer__social--facebook i{background:#1877f2}
.nc-footer__social--youtube i{background:#e62117}
.nc-footer__social--instagram i{background:#d6246e}
.nc-footer__social--linkedin i{background:#0a66c2}
.nc-footer__social--pinterest i{background:#e60023}
.nc-footer__social--whatsapp i{background:#1da851}
.nc-footer__social--telegram i{background:#1c8adb}
.nc-footer__social--tiktok i,.nc-footer__social--x i,.nc-footer__social--threads i{background:#121a26}
.nc-footer__col .nc-footer__cta{align-self:stretch;justify-content:center;margin-top:10px;min-height:44px;padding:0 16px;border:1.5px solid transparent;background:#f28a13;color:#061d38;font-size:14px;line-height:1;text-decoration:none}
.nc-footer__col .nc-footer__cta:hover{background:#e58210;color:#061d38;text-decoration:none}
.nc-footer__connect{display:flex;flex-direction:column}
.nc-footer__legal,.site-info{width:calc(100% - 64px);max-width:1136px;margin:0 auto;border-top:1px solid #e1e6ec}
.nc-footer__legal{padding:16px 0;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px 24px;font-size:13px;line-height:20px;color:#5d6878}
.nc-footer__legal p{margin:0}
.nc-footer__company{font-weight:700;color:#121a26}
.nc-footer__bct{display:inline-flex;align-items:center;min-height:44px;color:#5d6878;font-weight:600}
.nc-footer__bct img{display:block;height:auto;max-width:150px}
.site-info{padding:16px 0 24px;display:flex;flex-wrap:wrap;justify-content:space-between;gap:6px 12px}
.site-info p{margin:0;font-size:13px;line-height:18px;color:#6b7482}
@media (max-width:1023px){.nc-footer__grid{grid-template-columns:repeat(4,minmax(0,1fr))}.nc-footer__about{grid-column:1/-1}.nc-footer__col{padding-left:16px}.nc-footer__about+.nc-footer__col{border-left:0;padding-left:0}}
@media (max-width:767px){.site-footer{margin-top:40px}.nc-footer__grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px 16px;padding:28px 16px 20px}.nc-footer__col{padding-left:0;border-left:0}.nc-footer__connect{grid-column:1/-1}.nc-footer__legal,.site-info{width:calc(100% - 32px)}.site-info{flex-direction:column}}
@media (pointer:coarse){.nc-footer__col a{min-height:40px}}

/* Trang/bài viết chung */
.nc-page{padding-top:24px;padding-bottom:0;}
.nc-entry{max-width:800px}
.nc-entry__meta{margin:8px 0 24px;font-size:14px;color:#5b6270}
.nc-entry__content{font-size:17px;line-height:28px;overflow-wrap:break-word}
.nc-entry__content h2,.nc-entry__content h3{overflow-wrap:anywhere}
.nc-entry__content img{border-radius:8px}
.nc-entry__content h2{font-size:24px;line-height:32px;margin:32px 0 12px}
.nc-entry__content h3{font-size:20px;line-height:28px;margin:24px 0 8px}
.nc-empty{padding:32px 0}

@media (max-width:720px){.nc-masthead__row{grid-template-columns:minmax(0,1fr);justify-items:center;padding-left:16px;padding-right:16px}.nc-masthead__brand{order:-1}.nc-masthead__search{max-width:none;justify-self:stretch}.nc-masthead__actions{justify-self:center;justify-content:center}.nc-nav{padding-left:16px;padding-right:16px}.nc-nav ul{flex-wrap:nowrap;justify-content:flex-start;overflow-x:auto;scrollbar-width:none;gap:0 20px}.nc-nav li{flex:none}.nc-nav .sub-menu{display:none!important}.site-info{padding:0 16px 24px}}