:root{
    --color-primary:#2563eb;
    --color-primary-dark:#0b3a78;
    --color-primary-darker:#06203f;
    --color-accent:#f97316;
    --color-accent-dark:#ea580c;
    --color-success:#22c55e;
    --color-danger:#ef4444;

    --color-text:#0f172a;
    --color-text-muted:#475569;
    --color-text-light:#64748b;
    --color-bg:#ffffff;
    --color-bg-soft:#fbf7ea;
    --color-bg-muted:#f2f5f9;
    --color-border:#e6eaf0;
    --color-border-soft:#dfe5ef;

    --gradient-hero: linear-gradient(135deg,#0f172a 0%,#1d4ed8 100%);
    --gradient-deep: linear-gradient(135deg,#030712 0%,#111827 100%);
    --gradient-dept: linear-gradient(135deg,#1e1b4b 0%,#2563eb 100%);
    --gradient-security: linear-gradient(135deg,#0b1326,#030712);
    --gradient-mission: linear-gradient(135deg,#0a2a66 0%,#1e3a8a 100%);
    --gradient-trust: linear-gradient(135deg,#0b1326 0%,#0f172a 100%);
    --gradient-cta: linear-gradient(135deg,#0f172a 0%,#2563eb 100%);
    --gradient-accent: linear-gradient(135deg,#f97316 0%,#f59e0b 100%);
    --gradient-icon: linear-gradient(135deg,#2563eb 0%,#f97316 100%);

    --glass-bg: rgba(255,255,255,0.10);
    --glass-border: rgba(15,23,42,0.12);
    --glass-blur: blur(0px);

    --shadow-sm: none;
    --shadow-md: none;
    --shadow-lg: none;
    --shadow-xl: none;
    --shadow-primary:none;
    --shadow-accent:none;

    --radius-sm:2px;
    --radius-md:4px;
    --radius-lg:6px;
    --radius-pill:999px;

    --space-xs:0.5rem;
    --space-sm:1rem;
    --space-md:1.5rem;
    --space-lg:2rem;
    --space-xl:3rem;
    --space-2xl:5rem;

    --transition-fast:140ms cubic-bezier(.2,.8,.2,1);
    --transition-base:220ms cubic-bezier(.2,.8,.2,1);
    --transition-slow:420ms cubic-bezier(.2,.8,.2,1);
}

:where(body){
    color:var(--color-text);
    background:var(--color-bg);
    line-height:1.6;
    -webkit-font-smoothing:antialiased;
    accent-color:var(--color-primary);
    caret-color:var(--color-primary);
}

:where(img){
    max-width:100%;
    height:auto;
}

.bg-glass{
    background:var(--glass-bg);
    -webkit-backdrop-filter:var(--glass-blur);
    backdrop-filter:var(--glass-blur);
    border:1px solid var(--glass-border);
    border-radius:4px;
}

.icon-circle{
    width:60px;
    height:60px;
    background:var(--gradient-icon);
    border-radius:6px;
    display:inline-flex;
    align-items:center;
    justify-content:center;
    color:#ffffff;
    font-size:1.5rem;
    flex-shrink:0;
}

.header{
    background:#ffffff;
    z-index:1030;
    border-bottom:1px solid var(--color-border);
}

.header .navbar-brand img{
    transition:transform var(--transition-fast), filter var(--transition-fast);
    filter:saturate(1.05) contrast(1.02);
}

.header .navbar-brand:hover img{
    transform:scale(1.05);
    filter:saturate(1.15) contrast(1.05);
}

.header .nav-link{
    font-weight:500;
    color:var(--color-text-muted);
    transition:color var(--transition-fast), opacity var(--transition-fast);
}

.header .nav-link:hover{
    color:var(--color-primary-dark);
    opacity:0.95;
}

.hero-section{
    min-height:480px;
    background:#0b1220;
    color:#ffffff;
    padding-block:var(--space-2xl);
    position:relative;
    overflow:hidden;
    border-bottom:1px solid rgba(148,163,184,0.25);
}

.hero-section::before{
    content:'';
    position:absolute;
    inset:0;
    background:#0b1220;
    opacity:0.95;
    z-index:0;
    pointer-events:none;
}

.hero-section > .container{
    position:relative;
    z-index:1;
}

.hero-section h1{
    font-size:clamp(2rem, 4vw, 2.8rem);
    font-weight:700;
    margin-bottom:var(--space-sm);
    line-height:1.2;
    text-shadow:0 1px 0 rgba(0,0,0,0.35);
}

.hero-section h2{
    font-size:clamp(1.1rem, 2vw, 1.4rem);
    opacity:0.92;
    margin-bottom:var(--space-md);
    font-weight:500;
    color:#e2e8f0;
    text-shadow:0 1px 0 rgba(0,0,0,0.25);
}

.hero-section .lead{
    font-size:1.1rem;
    max-width:700px;
    margin-inline:auto;
    opacity:1;
    color:#cbd5e1;
    text-shadow:0 1px 0 rgba(0,0,0,0.2);
}

.hero-buttons{
    display:flex;
    gap:var(--space-sm);
    justify-content:center;
    flex-wrap:wrap;
    margin-block-start:var(--space-md);
}

.notice-bar{
    animation:noticeSlideIn 420ms cubic-bezier(.2,.8,.2,1);
}

.notice-bar a{
    transition:opacity var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
}

.notice-bar a:hover{
    opacity:0.9;
}

@keyframes noticeSlideIn{
    from{transform:translateY(-100%);opacity:0}
    to{transform:translateY(0);opacity:1}
}

.breadcrumb-nav{
    background:var(--color-bg-muted);
    border-bottom:1px solid var(--color-border-soft);
}

.breadcrumb-nav .breadcrumb-item a{
    transition:color var(--transition-fast), opacity var(--transition-fast);
}

.breadcrumb-nav .breadcrumb-item a:hover{
    color:var(--color-primary-dark) !important;
    opacity:0.95;
}

.why-us-section{
    background:var(--color-bg-soft);
    border-bottom:1px solid var(--color-border-soft);
}

.whyus-card{
    background:#ffffff;
    border:1px solid var(--color-border-soft);
    border-radius:var(--radius-lg);
    padding:var(--space-md);
    transition:transform var(--transition-base), border-color var(--transition-fast), background-color var(--transition-base);
    height:100%;
    box-shadow:none;
}

.whyus-card:hover{
    transform:translateY(-3px);
    box-shadow:none;
    background:#fffdf2;
    border-color:rgba(37,99,235,0.35);
}

.about-section{
    background:#0b1220;
    color:#ffffff;
    border-bottom:1px solid rgba(148,163,184,0.22);
}

.about-img-wrap{
    overflow:hidden;
    border-radius:var(--radius-lg);
    border:1px solid rgba(226,232,240,0.16);
    background:#0b1220;
}

.about-img-wrap img{
    transition:transform var(--transition-slow), filter var(--transition-slow);
    filter:saturate(1.05) contrast(1.02);
}

.about-img-wrap:hover img{
    transform:scale(1.05);
    filter:saturate(1.15) contrast(1.06);
}

.about-card{
    transition:transform var(--transition-base), background-color var(--transition-base), border-color var(--transition-fast);
}

.about-card:hover{
    transform:translateY(-3px);
    background:#101a2f;
    border-color:rgba(251,191,36,0.22);
}

.text-white-75{
    color:rgba(255,255,255,0.78) !important;
    text-shadow:none;
}

.departments-section{
    background:#0f172a;
    color:#ffffff;
    border-bottom:1px solid rgba(148,163,184,0.22);
}

.departments-title{
    font-size:clamp(1.6rem, 3vw, 2.2rem);
    font-weight:700;
    margin-bottom:var(--space-sm);
    color:#ffffff;
}

.departments-subtitle{
    font-size:1.05rem;
    max-width:800px;
    margin-inline:auto;
    color:rgba(226,232,240,0.86);
}

.departments-grid{
    display:grid;
    grid-template-columns:1fr;
    gap:var(--space-lg);
    margin-block-start:var(--space-lg);
}

@media (min-width: 768px){
    .departments-grid{
        grid-template-columns:1fr 1fr;
    }
}

.d-item{
    background:rgba(255,255,255,0.06);
    -webkit-backdrop-filter:var(--glass-blur);
    backdrop-filter:var(--glass-blur);
    padding:var(--space-md);
    border-radius:var(--radius-lg);
    margin-bottom:var(--space-sm);
    border:1px solid rgba(226,232,240,0.18);
    box-shadow:none;
}

.d-num{
    font-size:1.5rem;
    font-weight:700;
    color:var(--color-accent);
    margin-bottom:var(--space-xs);
    text-shadow:0 1px 0 rgba(0,0,0,0.35);
}

.d-num span{
    color:#ffffff;
    font-size:1.1rem;
    margin-inline-start:var(--space-xs);
    opacity:0.9;
}

.d-image{
    margin-bottom:var(--space-sm);
}

.d-image img{
    width:100%;
    border-radius:var(--radius-md);
    border:1px solid rgba(226,232,240,0.16);
}

.security-section{
    background:#071326;
    color:#ffffff;
    border-bottom:1px solid rgba(148,163,184,0.20);
}

.security-network{
    position:relative;
    max-width:800px;
    margin:var(--space-xl) auto;
    min-height:400px;
    display:grid;
    grid-template-columns:1fr;
    gap:var(--space-md);
}

@media (min-width: 768px){
    .security-network{
        grid-template-columns:repeat(3, 1fr);
        grid-template-rows:repeat(3, auto);
    }

    .core-node{grid-column:2;grid-row:2}
    .node-top-left{grid-column:1;grid-row:1}
    .node-top-right{grid-column:3;grid-row:1}
    .node-bottom-left{grid-column:1;grid-row:3}
    .node-bottom-right{grid-column:3;grid-row:3}
}

.core-node{
    background:#f97316;
    border-radius:6px;
    width:140px;
    height:140px;
    display:flex;
    flex-direction:column;
    align-items:center;
    justify-content:center;
    margin-inline:auto;
    color:#06203f;
    font-weight:800;
    box-shadow:none;
    border:1px solid rgba(0,0,0,0.12);
    outline:1px solid rgba(255,255,255,0.18);
    outline-offset:-3px;
}

.node{
    background:rgba(255,255,255,0.06);
    -webkit-backdrop-filter:var(--glass-blur);
    backdrop-filter:var(--glass-blur);
    border-radius:var(--radius-md);
    padding:var(--space-sm);
    text-align:center;
    color:#ffffff;
    transition:transform var(--transition-base), background-color var(--transition-base), border-color var(--transition-fast), opacity var(--transition-fast);
    border:1px solid rgba(226,232,240,0.18);
    box-shadow:none;
}

.node:hover{
    transform:scale(1.04);
    background:rgba(255,255,255,0.10);
    border-color:rgba(249,115,22,0.35);
    opacity:1;
}

.node-title{
    font-weight:600;
    color:var(--color-accent);
    margin-block:var(--space-xs);
    text-shadow:0 1px 0 rgba(0,0,0,0.35);
}

@media (max-width: 767.98px){
    .core-node{width:120px;height:120px}
}

.honor-section{
    background:var(--color-bg-soft);
    border-bottom:1px solid var(--color-border-soft);
}

.honor-row{
    padding-block:var(--space-sm);
}

.honor-text-card{
    padding:var(--space-md);
    background:#ffffff;
    border-radius:var(--radius-md);
    border-inline-start:4px solid var(--color-primary);
    border:1px solid var(--color-border-soft);
    transition:transform var(--transition-base), background-color var(--transition-base), border-color var(--transition-fast);
    box-shadow:none;
}

.honor-text-card:hover{
    transform:translateY(-3px);
    box-shadow:none;
    background:#f6fbff;
    border-color:rgba(37,99,235,0.28);
}

.mission-section{
    background:#1b1b33;
    padding-block:var(--space-2xl);
    color:#ffffff;
    border-bottom:1px solid rgba(226,232,240,0.18);
}

.mission-list li{
    margin-bottom:var(--space-sm);
    color:#cbd5e1;
    text-shadow:none;
}

.stats-section{
    background:#ffffff;
    border-bottom:1px solid var(--color-border-soft);
}

.stats-card{
    transition:transform var(--transition-base), background-color var(--transition-base), border-color var(--transition-fast);
    background:#fbf7ea;
    border:1px solid var(--color-border-soft);
    box-shadow:none;
    border-radius:var(--radius-md);
}

.stats-card:hover{
    transform:translateY(-4px);
    box-shadow:none;
    background:#f2f9ff;
    border-color:rgba(37,99,235,0.25);
}

.stats-card h3{
    font-variant-numeric:tabular-nums;
    color:var(--color-primary-darker);
    text-shadow:none;
}

.news-section{
    background:var(--color-bg-soft);
    border-bottom:1px solid var(--color-border-soft);
}

.news-card{
    transition:transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-fast), background-color var(--transition-base);
    border:1px solid var(--color-border-soft);
    background:#ffffff;
    border-radius:var(--radius-md);
    box-shadow:none;
}

.news-card:hover{
    transform:translateY(-5px);
    box-shadow:none;
    border-color:rgba(249,115,22,0.35);
}

.news-img-wrap{
    height:200px;
    overflow:hidden;
    position:relative;
    background:#0b1220;
    border-bottom:1px solid rgba(0,0,0,0.08);
}

.news-img-wrap img{
    width:100%;
    height:100%;
    object-fit:cover;
    transition:transform var(--transition-slow), filter var(--transition-slow);
    filter:saturate(1.05) contrast(1.03);
}

.news-card:hover .news-img-wrap img{
    transform:scale(1.08);
    filter:saturate(1.15) contrast(1.07);
}

.matches-section{
    background:#ffffff;
    border-bottom:1px solid var(--color-border-soft);
}

.match-card{
    transition:transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-fast), background-color var(--transition-base);
    border:1px solid var(--color-border-soft);
    border-radius:var(--radius-md);
    background:#fbf7ea;
    box-shadow:none;
}

.match-card:hover{
    transform:translateY(-3px);
    box-shadow:none;
    border-color:var(--color-primary);
    background:#f3f8ff;
}

.match-card .team{
    min-width:0;
}

.match-card .team .small{
    overflow:hidden;
    text-overflow:ellipsis;
    white-space:nowrap;
}

.match-card .score{
    font-variant-numeric:tabular-nums;
    color:var(--color-primary-darker);
    text-shadow:none;
}

.trust-section{
    background:#061a2d;
    color:#ffffff;
    border-bottom:1px solid rgba(148,163,184,0.20);
}

.trust-card{
    background:rgba(255,255,255,0.06);
    -webkit-backdrop-filter:var(--glass-blur);
    backdrop-filter:var(--glass-blur);
    border-radius:var(--radius-md);
    padding:var(--space-lg) var(--space-sm);
    height:100%;
    transition:transform var(--transition-base), background-color var(--transition-base), border-color var(--transition-fast);
    border:1px solid rgba(226,232,240,0.18);
    box-shadow:none;
}

.trust-card:hover{
    transform:translateY(-3px);
    background:rgba(255,255,255,0.10);
    border-color:rgba(249,115,22,0.35);
}

.partners-section{
    background:var(--color-bg-soft);
    border-bottom:1px solid var(--color-border-soft);
}

.partner-card{
    transition:transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-fast), background-color var(--transition-base);
    border:1px solid transparent;
    background:transparent;
    box-shadow:none;
}

.partner-card:hover{
    transform:translateY(-5px);
    box-shadow:none;
    border-color:rgba(37,99,235,0.28);
    background:#ffffff;
}

.testimonials-section{
    background:#ffffff;
    border-bottom:1px solid var(--color-border-soft);
}

.testimonial-card{
    transition:transform var(--transition-base), border-color var(--transition-fast), box-shadow var(--transition-base);
    border-block-start:4px solid transparent;
    border-radius:var(--radius-md);
    border:1px solid var(--color-border-soft);
    box-shadow:none;
    background:#fbf7ea;
}

.testimonial-card:hover{
    border-block-start-color:var(--color-accent);
    transform:translateY(-5px);
    box-shadow:none;
    border-color:rgba(249,115,22,0.25);
    background:#fdf4ea;
}

.cta-banner-section{
    background:#0f172a;
    color:#ffffff;
    position:relative;
    overflow:hidden;
    border-bottom:1px solid rgba(148,163,184,0.22);
}

.cta-banner-section::before{
    content:'';
    position:absolute;
    inset:0;
    background:#0b1220;
    z-index:0;
    opacity:0.9;
}

.cta-banner-section > .container{
    position:relative;
    z-index:1;
}

.cta-banner-section .btn-warning{
    box-shadow:none;
    border-radius:var(--radius-md);
    background:var(--color-accent);
    border:1px solid rgba(0,0,0,0.12);
    transition:transform var(--transition-base), background-color var(--transition-fast), border-color var(--transition-fast), opacity var(--transition-fast);
}

.text-white-75{
    color:rgba(255,255,255,0.85) !important;
}

.footer{
    font-size:0.9rem;
    color:#94a3b8;
    background:#ffffff;
    border-top:1px solid var(--color-border-soft);
}

.footer a {
    transition: color 220ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.footer a:hover {
    color: var(--color-accent) !important;
}

.footer-copyright {
    font-size: 0.85rem;
}

.footer-beian {
    font-size: 0.8rem;
    line-height: 1.8;
    opacity: 0.9;
    color: var(--color-text-muted);
}

.footer-beian a:hover {
    color: var(--color-accent) !important;
    text-decoration: underline !important;
}

.footer-beian img {
    margin-inline-end: 4px;
    transition: transform 200ms cubic-bezier(0.2, 0.8, 0.2, 1);
    filter: saturate(1.05) contrast(1.02);
}

.footer-beian a:hover img {
    transform: scale(1.15);
}

.footer-beian li {
    white-space: nowrap;
}

/* Beian horizontal strips */
.footer,
.footer .footer-strip {
    border-top: 1px solid rgba(19, 41, 63, 0.18);
}

.form-control:focus,
.form-select:focus {
    border-color: var(--color-primary);
    box-shadow: none;
    outline: 2px solid rgba(37, 99, 235, 0.22);
    outline-offset: 2px;
}

.btn-primary {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
    box-shadow: none;
    border-radius: 4px;
}

.btn-primary:hover,
.btn-primary:focus {
    background-color: #1d4ed8;
    border-color: #1d4ed8;
    box-shadow: none;
    transition: background-color 160ms cubic-bezier(0.2, 0.8, 0.2, 1), border-color 160ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.input-group-text {
    background-color: var(--color-bg-muted);
    border-color: var(--color-border);
    border-radius: 4px;
}

/* ============================================
   23. Reduced Motion
   ============================================ */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ============================================================
   Grid Layout Defaults (CSS-Variant-Ready)
   CSSVariantEngine sẽ override các rules này
   ============================================================ */

/* News grid (default 3 cols) */
.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

/* Features list (default 3 cols) */
.feature-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

/* User testimonials (default 3 cols) */
.testimonial-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

/* Partners (default 4 cols) */
.partner-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    align-items: center;
}

/* Stats (default 4 cols) */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    text-align: center;
}

/* FAQ list (default single centered) */
.faq-list {
    max-width: 820px;
    margin: 0 auto;
}

/* Hero content (default centered) */
.hero-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

/* Hero split layout (left text right image) */
.hero-split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    align-items: center;
}
.hero-split-text { }
.hero-split-img { text-align: center; }

/* CTA content (default centered) */
.cta-inner {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

/* Team authors (default 4 cols) */
.authors-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

/* Contact channels (default 3 cols) */
.channels-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

/* Post list (default 2 cols) */
.post-list-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

/* Related posts (default 3 cols) */
.related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

/* Matches list (default 3 cols) */
.matches-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

/* Steps grid (default 4 cols) */
.steps-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

/* QR code grid (default 3 cols) */
.qr-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    justify-items: center;
}

/* Honors list (default 2 rows alternating) */
.honor-list {
    display: flex;
    flex-direction: column;
    gap: 3rem;
}
.honor-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    align-items: center;
}
.honor-row-reverse {
    direction: rtl;
}
.honor-row-reverse > * {
    direction: ltr;
}

/* ============================================================
   Responsive Defaults
   ============================================================ */
@media (max-width: 1024px) {
    .news-grid,
    .feature-list,
    .channels-grid,
    .testimonial-list { grid-template-columns: repeat(2, 1fr); }

    .partner-grid,
    .stats-grid,
    .authors-grid { grid-template-columns: repeat(2, 1fr); }

    .matches-grid { grid-template-columns: repeat(2, 1fr); }
    .steps-grid { grid-template-columns: repeat(2, 1fr); }

    .hero-split { grid-template-columns: 1fr; }
    .honor-row { grid-template-columns: 1fr; }
    .honor-row-reverse { direction: ltr; }
}

@media (max-width: 640px) {
    .news-grid,
    .feature-list,
    .testimonial-list,
    .channels-grid,
    .post-list-grid,
    .related-grid,
    .authors-grid,
    .matches-grid { grid-template-columns: 1fr; }

    .partner-grid,
    .stats-grid { grid-template-columns: repeat(2, 1fr); }

    .steps-grid { grid-template-columns: 1fr; }
    .qr-grid { grid-template-columns: 1fr; max-width: 300px; margin: 0 auto; }

    .faq-list { max-width: 100%; }
}