:root{
  --color-primary:#6b705c;
  --color-primary-dark:#3f4338;
  --color-primary-darker:#1f211c;
  --color-accent:#c44536;
  --color-accent-dark:#8f2f23;
  --color-success:#2f6f4a;
  --color-danger:#b8332a;

  --color-text:#1a1a1a;
  --color-text-muted:#4a4a4a;
  --color-text-light:#6a6a6a;
  --color-bg:#f5f1e8;
  --color-bg-soft:#fbf7ef;
  --color-bg-muted:#f0eadc;
  --color-border:#e7dcc9;
  --color-border-soft:#efe5d3;

  --gradient-hero: linear-gradient(135deg, #f5f1e8 0%, #e8e1cf 55%, #f7f2e2 100%);
  --gradient-deep: linear-gradient(135deg, #1a1a1a 0%, #2a2422 100%);
  --gradient-dept: linear-gradient(135deg, #6b705c 0%, #3f4338 100%);
  --gradient-security: linear-gradient(135deg, #3f4338 0%, #1a1a1a 100%);
  --gradient-mission: linear-gradient(135deg, #c44536 0%, #6b705c 100%);
  --gradient-trust: linear-gradient(135deg, #1a1a1a 0%, #6b705c 100%);
  --gradient-cta: linear-gradient(135deg, #c44536 0%, #8f2f23 45%, #6b705c 100%);
  --gradient-accent: linear-gradient(135deg, #c44536 0%, #8f2f23 100%);
  --gradient-icon: linear-gradient(135deg, #6b705c 0%, #3f4338 100%);

  --glass-bg: rgba(245,241,232,.78);
  --glass-border: rgba(196,69,54,.18);
  --glass-blur: blur(8px);

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

  --radius-sm:3px;
  --radius-md:4px;
  --radius-lg:6px;
  --radius-pill:22px;

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

  --transition-fast:160ms cubic-bezier(.2,.8,.2,1);
  --transition-base:220ms cubic-bezier(.2,.8,.2,1);
  --transition-slow:420ms cubic-bezier(.15,.85,.15,1);
}

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

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

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

.icon-circle{
  width:60px;
  height:60px;
  background:var(--gradient-icon);
  border-radius:50%;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  color:#fff;
  font-size:1.5rem;
  flex-shrink:0;
  border:1px solid rgba(196,69,54,.25);
  box-shadow:none;
}

.header{
  background:#fbf7ef;
  z-index:1030;
  border-bottom:1px solid var(--color-border-soft);
}

.header .navbar-brand img{
  transition:transform var(--transition-fast);
}

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

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

.header .nav-link:hover{
  color:var(--color-primary-dark);
  opacity:.95;
}

.hero-section{
  min-height:480px;
  background:var(--gradient-hero);
  color:#1a1a1a;
  padding-block:var(--space-2xl);
  position:relative;
  overflow:hidden;
  border-bottom:1px solid var(--color-border-soft);
}

.hero-section::before{
  content:'';
  position:absolute;
  inset:0;
  background:rgba(196,69,54,.06);
  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(245,241,232,.7);
}

.hero-section h2{
  font-size:clamp(1.1rem, 2vw, 1.4rem);
  opacity:.92;
  margin-bottom:var(--space-md);
  font-weight:500;
  text-shadow:none;
}

.hero-section .lead{
  font-size:1.1rem;
  max-width:700px;
  margin-inline:auto;
  opacity:.96;
}

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

.notice-bar{
  animation:noticeSlideIn 520ms cubic-bezier(.2,.8,.2,1);
}

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

.notice-bar a:hover{
  opacity:.9;
  color:var(--color-accent);
}

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

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

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

.breadcrumb-nav .breadcrumb-item a:hover{
  color:var(--color-primary-dark) !important;
  text-decoration-color:var(--color-accent);
}

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

.whyus-card{
  background:#fbf7ef;
  border:1px solid var(--color-border-soft);
  border-radius:var(--radius-lg);
  padding:var(--space-md);
  transition:transform var(--transition-base), background-color var(--transition-base), border-color var(--transition-base);
  height:100%;
  box-shadow:none;
}

.whyus-card:hover{
  transform:translateY(-3px);
  background:#f8f2e2;
  border-color:rgba(196,69,54,.35);
}

.about-section{
  background:var(--gradient-deep);
  color:#f5f1e8;
  border-bottom:1px solid rgba(245,241,232,.14);
}

.about-img-wrap{
  overflow:hidden;
  border-radius:var(--radius-lg);
  border:1px solid rgba(245,241,232,.18);
}

.about-img-wrap img{
  transition:transform var(--transition-slow);
}

.about-img-wrap:hover img{
  transform:scale(1.05);
}

.about-card{
  transition:background-color var(--transition-base), transform var(--transition-base), border-color var(--transition-base);
  border:1px solid rgba(245,241,232,.14);
}

.about-card:hover{
  transform:translateY(-3px);
  background:rgba(245,241,232,.06);
  border-color:rgba(196,69,54,.35);
}

.text-white-75{
  color:rgba(245,241,232,.78) !important;
}

.departments-section{
  background:var(--gradient-dept);
  color:#f5f1e8;
  border-bottom:1px solid rgba(245,241,232,.14);
}

.departments-title{
  font-size:clamp(1.6rem, 3vw, 2.2rem);
  font-weight:700;
  margin-bottom:var(--space-sm);
  text-shadow:none;
}

.departments-subtitle{
  font-size:1.05rem;
  max-width:800px;
  margin-inline:auto;
  color:rgba(245,241,232,.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(245,241,232,.78);
  backdrop-filter:var(--glass-blur);
  -webkit-backdrop-filter:var(--glass-blur);
  padding:var(--space-md);
  border-radius:var(--radius-md);
  margin-bottom:var(--space-sm);
  border:1px solid rgba(26,26,26,.14);
  box-shadow:none;
}

.d-num{
  font-size:1.5rem;
  font-weight:700;
  color:var(--color-accent);
  margin-bottom:var(--space-xs);
}

.d-num span{
  color:#1a1a1a;
  font-size:1.1rem;
  margin-inline-start:var(--space-xs);
  opacity:.85;
}

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

.d-image img{
  width:100%;
  border-radius:var(--radius-md);
  border:1px solid rgba(26,26,26,.12);
}

.security-section{
  background:var(--gradient-security);
  color:#f5f1e8;
  border-bottom:1px solid rgba(245,241,232,.14);
}

.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:var(--gradient-accent);
  border-radius:50%;
  width:140px;
  height:140px;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  margin-inline:auto;
  color:#f5f1e8;
  font-weight:700;
  box-shadow:none;
  border:1px solid rgba(245,241,232,.18);
}

.node{
  background:rgba(245,241,232,.72);
  backdrop-filter:var(--glass-blur);
  -webkit-backdrop-filter:var(--glass-blur);
  border-radius:var(--radius-md);
  padding:var(--space-sm);
  text-align:center;
  color:#1a1a1a;
  transition:background-color var(--transition-base), transform var(--transition-base), border-color var(--transition-base);
  border:1px solid rgba(245,241,232,.20);
  box-shadow:none;
}

.node:hover{
  transform:scale(1.05);
  background:rgba(245,241,232,.86);
  border-color:rgba(196,69,54,.35);
}

.node-title{
  font-weight:600;
  color:var(--color-accent);
  margin-block:var(--space-xs);
}

@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:#fbf7ef;
  border-radius:var(--radius-md);
  border-inline-start:4px solid var(--color-primary);
  transition:transform var(--transition-base), border-color var(--transition-base), background-color var(--transition-base);
  box-shadow:none;
  border:1px solid var(--color-border-soft);
}

.honor-text-card:hover{
  transform:translateY(-3px);
  background:#f8f2e2;
  border-color:rgba(196,69,54,.35);
}

.mission-section{
  background:var(--gradient-mission);
  padding-block:var(--space-2xl);
  color:#f5f1e8;
  border-bottom:1px solid rgba(245,241,232,.14);
}

.mission-list li{
  margin-bottom:var(--space-sm);
  color:rgba(245,241,232,.86);
}

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

.stats-card{
  transition:transform var(--transition-base), background-color var(--transition-base), border-color var(--transition-base);
  background:#fbf7ef;
  border:1px solid var(--color-border-soft);
  box-shadow:none;
  border-radius:var(--radius-md);
}

.stats-card:hover{
  transform:translateY(-4px);
  background:#f8f2e2;
  border-color:rgba(196,69,54,.32);
}

.stats-card h3{
  font-variant-numeric:tabular-nums;
  color:#1f211c;
  text-shadow:none;
}

.news-section{
  background:var(--color-bg-soft);
}

.news-card{
  transition:transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base), background-color var(--transition-base);
  border:1px solid var(--color-border-soft);
  background:#fbf7ef;
  border-radius:var(--radius-md);
  box-shadow:none;
}

.news-card:hover{
  transform:translateY(-5px);
  box-shadow:none;
  border-color:rgba(196,69,54,.35);
  background:#f8f2e2;
}

.news-img-wrap{
  height:200px;
  overflow:hidden;
  position:relative;
  border-bottom:1px solid var(--color-border-soft);
}

.news-img-wrap img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform var(--transition-slow);
  filter:saturate(.95) contrast(1.02);
}

.news-card:hover .news-img-wrap img{
  transform:scale(1.08);
}

.matches-section{
  background:var(--color-bg-soft);
}

.match-card{
  transition:transform var(--transition-base), border-color var(--transition-base), background-color var(--transition-base);
  border:1px solid var(--color-border-soft);
  background:#fbf7ef;
  border-radius:var(--radius-md);
  box-shadow:none;
}

.match-card:hover{
  transform:translateY(-3px);
  box-shadow:none;
  border-color:rgba(107,112,92,.9);
  background:#f8f2e2;
}

.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);
}

.trust-section{
  background:var(--gradient-trust);
  color:#f5f1e8;
  border-top:1px solid rgba(245,241,232,.14);
}

.trust-card{
  background:rgba(245,241,232,.78);
  backdrop-filter:var(--glass-blur);
  -webkit-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-base);
  border:1px solid rgba(245,241,232,.18);
  box-shadow:none;
}

.trust-card:hover{
  transform:translateY(-3px);
  background:rgba(245,241,232,.90);
  border-color:rgba(196,69,54,.35);
}

.partners-section{
  background:var(--color-bg-soft);
}

.partner-card{
  transition:transform var(--transition-base), background-color var(--transition-base), border-color var(--transition-base);
  border:1px solid var(--color-border-soft);
  background:#fbf7ef;
  border-radius:var(--radius-md);
  box-shadow:none;
}

.partner-card:hover{
  transform:translateY(-5px);
  box-shadow:none;
  background:#f8f2e2;
  border-color:rgba(196,69,54,.32);
}

.testimonials-section{
  background:#fbf7ef;
  border-top:1px solid var(--color-border-soft);
}

.testimonial-card{
  transition:transform var(--transition-base), border-color var(--transition-base), background-color var(--transition-base);
  border-block-start:4px solid transparent;
  border:1px solid var(--color-border-soft);
  border-radius:var(--radius-md);
  background:#fbf7ef;
  box-shadow:none;
}

.testimonial-card:hover{
  border-block-start-color:var(--color-accent);
  transform:translateY(-5px);
  box-shadow:none;
  background:#f8f2e2;
}

.cta-banner-section{
  background:var(--gradient-cta);
  color:#f5f1e8;
  position:relative;
  overflow:hidden;
  border-top:1px solid rgba(245,241,232,.14);
  border-bottom:1px solid rgba(245,241,232,.14);
}

.cta-banner-section::before{
  content:'';
  position:absolute;
  inset:0;
  background:rgba(0,0,0,.18);
  z-index:0;
}

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

.cta-banner-section .btn-warning{
  box-shadow:none;
  border:1px solid rgba(245,241,232,.22);
}

.text-white-75{
  color:rgba(245,241,232,.86) !important;
}

.footer{
  font-size:0.9rem;
  color:#4a4a4a;
}

.footer a {
    transition: color 140ms linear;
}

.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: 0.85;
}

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

.footer-beian img {
    margin-inline-end: 4px;
    transition: transform 160ms linear;
}

.footer-beian a:hover img {
    transform: scale(1.2);
}

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

@media (max-width: 575.98px) {
    .footer-beian ul {
        flex-direction: column;
        gap: var(--space-xs) !important;
    }

    .footer-beian li {
        white-space: normal;
        text-align: center;
    }
}

/* ============================================
   22. Form (Login/Signup/Contact)
   ============================================ */
.form-control:focus,
.form-select:focus {
    border-color: var(--color-accent);
    box-shadow: none;
}

.btn-primary {
    background-color: var(--color-accent);
    border-color: var(--color-accent);
    border-style: solid;
}

.btn-primary:hover,
.btn-primary:focus {
    background-color: var(--color-accent-hover, #b53a2d);
    border-color: var(--color-accent-hover, #b53a2d);
}

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

/* ============================================
   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
   ============================================================ */

/* 新闻网格 (默认 3 列) */
.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

/* 功能特性列表 (默认 3 列) */
.feature-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

/* 用户评价 (默认 3 列) */
.testimonial-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

/* 合作伙伴 (默认 4 列) */
.partner-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    align-items: center;
}

/* 数据统计 (默认 4 列) */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    text-align: center;
}

/* FAQ 列表 (默认单列居中) */
.faq-list {
    max-width: 820px;
    margin: 0 auto;
}

/* Hero 内容 (默认居中) */
.hero-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

/* Hero 分割布局 (左文右图) */
.hero-split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    align-items: center;
}
.hero-split-text { }
.hero-split-img { text-align: center; }

/* CTA 内容 (默认居中) */
.cta-inner {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

/* 作者团队 (默认 4 列) */
.authors-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

/* 联系渠道 (默认 3 列) */
.channels-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

/* 文章列表 (默认 2 列) */
.post-list-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

/* 相关文章 (默认 3 列) */
.related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

/* 赛事列表 (默认 3 列) */
.matches-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

/* 步 骤网格 (默认 4 列) */
.steps-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

/* 二维码网格 (默认 3 列) */
.qr-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    justify-items: center;
}

/* 荣誉列表 (默认 2 列交替) */
.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%; }
}