/* roulang page: index */
:root{
  --primary:#0b1e3f;
  --primary-light:#142c56;
  --primary-soft:#1e3a67;
  --accent:#f59e0b;
  --accent-hover:#d97706;
  --bg-body:#f8fafc;
  --bg-dark:#0b1e3f;
  --text-main:#0f172a;
  --text-muted:#64748b;
  --border-light:#e2e8f0;
  --radius-md:12px;
  --radius-lg:20px;
  --radius-xl:28px;
  --shadow-sm:0 2px 8px rgba(15,23,42,.06);
  --shadow-md:0 8px 24px rgba(15,23,42,.08);
  --shadow-lg:0 16px 40px rgba(15,23,42,.12);
  --transition:all .3s cubic-bezier(.4,0,.2,1);
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  color:var(--text-main);
  background:var(--bg-body);
  line-height:1.6;
  padding-bottom:64px;
  -webkit-font-smoothing:antialiased;
}
@media(min-width:768px){
  body{padding-bottom:0}
}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}
button{font-family:inherit}
.container{max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px}
.section{padding:88px 0}
.section-header{text-align:center;max-width:720px;margin:0 auto 56px}
.section-tag{
  display:inline-block;
  background:linear-gradient(135deg,rgba(245,158,11,.15),rgba(245,158,11,.08));
  color:var(--accent-hover);
  font-size:13px;
  font-weight:700;
  letter-spacing:.08em;
  padding:6px 18px;
  border-radius:999px;
  margin-bottom:14px;
  border:1px solid rgba(245,158,11,.25);
}
.section-header h2{
  font-size:clamp(28px,4vw,40px);
  font-weight:800;
  line-height:1.25;
  color:var(--primary);
  letter-spacing:-.01em;
}
.section-header p{
  margin-top:14px;
  color:var(--text-muted);
  font-size:16px;
  line-height:1.7;
}

/* 按钮 */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:14px 32px;
  border-radius:999px;
  font-size:15px;
  font-weight:600;
  line-height:1;
  transition:var(--transition);
  cursor:pointer;
  border:2px solid transparent;
}
.btn-primary{
  background:var(--accent);
  color:#0b1e3f;
  box-shadow:0 6px 20px rgba(245,158,11,.35);
}
.btn-primary:hover{
  background:var(--accent-hover);
  transform:translateY(-2px);
  box-shadow:0 10px 28px rgba(245,158,11,.45);
}
.btn-primary:active{transform:translateY(0);box-shadow:0 4px 12px rgba(245,158,11,.3)}
.btn-outline{
  border-color:rgba(255,255,255,.7);
  color:#fff;
  background:rgba(255,255,255,.08);
  backdrop-filter:blur(4px);
}
.btn-outline:hover{
  background:rgba(255,255,255,.16);
  border-color:#fff;
  transform:translateY(-2px);
}
.btn-outline:active{transform:translateY(0)}
.btn-dark{
  background:var(--primary);
  color:#fff;
  box-shadow:0 6px 20px rgba(11,30,63,.3);
}
.btn-dark:hover{
  background:var(--primary-light);
  transform:translateY(-2px);
  box-shadow:0 10px 28px rgba(11,30,63,.4);
}
.btn:focus-visible{
  outline:3px solid rgba(245,158,11,.5);
  outline-offset:2px;
}

/* 桌面导航 */
.site-header{
  position:sticky;
  top:0;
  z-index:1000;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(16px);
  border-bottom:1px solid var(--border-light);
  transition:var(--transition);
}
.site-header.scrolled{box-shadow:0 4px 24px rgba(15,23,42,.08)}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:72px;
}
.logo{
  font-size:24px;
  font-weight:800;
  color:var(--primary);
  letter-spacing:-.02em;
  display:flex;
  align-items:center;
  gap:2px;
}
.logo span{
  color:var(--accent);
  font-weight:700;
}
.desktop-nav{
  display:none;
  align-items:center;
  gap:28px;
}
@media(min-width:768px){
  .desktop-nav{display:flex}
}
.nav-link{
  font-size:15px;
  font-weight:500;
  color:var(--text-muted);
  position:relative;
  padding:8px 2px;
  transition:var(--transition);
}
.nav-link:hover{
  color:var(--primary);
}
.nav-link.active{
  color:var(--primary);
  font-weight:600;
}
.nav-link.active::after{
  content:'';
  position:absolute;
  bottom:-2px;
  left:0;
  width:100%;
  height:3px;
  border-radius:3px;
  background:var(--accent);
  transform:scaleX(1);
  transition:var(--transition);
}
.nav-link:not(.active)::after{
  content:'';
  position:absolute;
  bottom:-2px;
  left:0;
  width:100%;
  height:3px;
  border-radius:3px;
  background:var(--accent);
  transform:scaleX(0);
  transition:var(--transition);
}
.nav-link:hover::after{transform:scaleX(1)}
.header-cta{
  display:none;
  padding:10px 24px;
  font-size:14px;
  border-radius:999px;
  background:var(--primary);
  color:#fff;
  font-weight:600;
  transition:var(--transition);
}
.header-cta:hover{
  background:var(--primary-light);
  transform:translateY(-1px);
  box-shadow:0 6px 18px rgba(11,30,63,.28);
}
@media(min-width:768px){
  .header-cta{display:inline-flex;align-items:center;justify-content:center}
}
@media(min-width:1024px){
  .desktop-nav{gap:36px}
}

/* 移动端底部Tab */
.mobile-tabbar{
  position:fixed;
  bottom:0;
  left:0;
  right:0;
  z-index:1200;
  display:flex;
  background:rgba(255,255,255,.96);
  backdrop-filter:blur(12px);
  border-top:1px solid var(--border-light);
  padding:6px 0;
  padding-bottom:calc(6px + env(safe-area-inset-bottom));
  box-shadow:0 -4px 20px rgba(0,0,0,.06);
}
.mobile-tabbar .tab-item{
  flex:1;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:3px;
  font-size:11px;
  color:var(--text-muted);
  padding:6px 0 4px;
  border-radius:12px;
  transition:var(--transition);
}
.mobile-tabbar .tab-item i{
  font-size:19px;
  transition:var(--transition);
}
.mobile-tabbar .tab-item.active{
  color:var(--primary);
  font-weight:600;
}
.mobile-tabbar .tab-item.active i{
  transform:scale(1.1);
  color:var(--accent);
}
.mobile-tabbar .tab-item:active{
  background:rgba(245,158,11,.1);
}
@media(min-width:768px){
  .mobile-tabbar{display:none}
}

/* Hero */
.hero{
  position:relative;
  min-height:85vh;
  display:flex;
  align-items:center;
  justify-content:center;
  background-size:cover;
  background-position:center;
  background-repeat:no-repeat;
  color:#fff;
  text-align:center;
  overflow:hidden;
}
.hero-overlay{
  position:absolute;
  inset:0;
  background:linear-gradient(160deg,rgba(11,30,63,.72) 0%,rgba(11,30,63,.82) 100%);
}
.hero-content{
  position:relative;
  z-index:2;
  max-width:880px;
  padding:48px 24px;
}
.hero-badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  background:rgba(255,255,255,.12);
  border:1px solid rgba(255,255,255,.25);
  padding:8px 20px;
  border-radius:999px;
  font-size:13px;
  font-weight:500;
  letter-spacing:.04em;
  margin-bottom:28px;
  backdrop-filter:blur(8px);
}
.hero-badge i{
  color:var(--accent);
}
.hero h1{
  font-size:clamp(36px,7vw,64px);
  font-weight:900;
  line-height:1.15;
  letter-spacing:-.02em;
  margin-bottom:20px;
  text-shadow:0 4px 30px rgba(0,0,0,.3);
}
.hero h1 em{
  font-style:normal;
  color:var(--accent);
}
.hero-desc{
  font-size:clamp(15px,2vw,18px);
  color:rgba(255,255,255,.9);
  line-height:1.75;
  max-width:620px;
  margin:0 auto 36px;
  text-shadow:0 2px 12px rgba(0,0,0,.2);
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  justify-content:center;
}
@media(max-width:520px){
  .hero-actions{flex-direction:column;align-items:stretch;padding:0 24px}
}

/* 核心说明 */
.about-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:48px;
  align-items:center;
}
.about-text h2{
  font-size:clamp(26px,3.5vw,38px);
  font-weight:800;
  line-height:1.3;
  color:var(--primary);
  margin-bottom:20px;
}
.about-text p{
  color:var(--text-muted);
  font-size:15px;
  line-height:1.8;
  margin-bottom:24px;
}
.about-list{
  list-style:none;
  display:flex;
  flex-direction:column;
  gap:14px;
}
.about-list li{
  display:flex;
  align-items:flex-start;
  gap:12px;
  font-size:15px;
  color:var(--text-main);
  font-weight:500;
}
.about-list li i{
  color:var(--accent);
  font-size:16px;
  margin-top:3px;
  flex-shrink:0;
}
.about-image{
  position:relative;
  border-radius:var(--radius-xl);
  overflow:hidden;
  box-shadow:var(--shadow-lg);
  transform:translateZ(0);
}
.about-image::after{
  content:'';
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,transparent 60%,rgba(11,30,63,.25));
  pointer-events:none;
}
.about-image img{
  width:100%;
  height:100%;
  object-fit:cover;
  min-height:320px;
  transition:var(--transition);
}
.about-image:hover img{
  transform:scale(1.03);
}
@media(min-width:768px){
  .about-grid{grid-template-columns:1fr 1fr;gap:64px}
}

/* 分类卡片 */
.category-section{
  background:#fff;
  border-top:1px solid var(--border-light);
  border-bottom:1px solid var(--border-light);
}
.category-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:28px;
}
@media(min-width:768px){
  .category-grid{grid-template-columns:repeat(3,1fr)}
}
@media(max-width:767px){
  .category-grid{grid-template-columns:repeat(1,1fr)}
}
.category-card{
  position:relative;
  background:#fff;
  border-radius:var(--radius-lg);
  overflow:hidden;
  box-shadow:var(--shadow-sm);
  border:1px solid var(--border-light);
  transition:var(--transition);
  display:flex;
  flex-direction:column;
}
.category-card:hover{
  transform:translateY(-6px);
  box-shadow:var(--shadow-lg);
  border-color:rgba(245,158,11,.3);
}
.category-card .card-img{
  position:relative;
  overflow:hidden;
  aspect-ratio:16/10;
}
.category-card .card-img img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:var(--transition);
}
.category-card:hover .card-img img{
  transform:scale(1.06);
}
.category-card .card-img::after{
  content:'';
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,transparent 55%,rgba(11,30,63,.5));
}
.category-card .card-body{
  padding:24px 24px 28px;
  flex:1;
  display:flex;
  flex-direction:column;
}
.category-card .card-body h3{
  font-size:20px;
  font-weight:700;
  color:var(--primary);
  margin-bottom:10px;
  line-height:1.3;
}
.category-card .card-body p{
  font-size:14px;
  color:var(--text-muted);
  line-height:1.65;
  flex:1;
  margin-bottom:18px;
}
.card-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--accent-hover);
  font-size:14px;
  font-weight:600;
  transition:var(--transition);
}
.category-card:hover .card-link{
  gap:12px;
  color:var(--accent-hover);
}
.card-badge{
  position:absolute;
  top:16px;
  right:16px;
  z-index:2;
  background:rgba(255,255,255,.92);
  border-radius:999px;
  padding:5px 16px;
  font-size:12px;
  font-weight:600;
  color:var(--primary);
  box-shadow:0 4px 12px rgba(0,0,0,.12);
}

/* 资讯列表 */
.news-section{
  background:var(--bg-body);
}
.news-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:24px;
  margin-bottom:40px;
}
@media(min-width:768px){
  .news-grid{grid-template-columns:1fr 1fr}
}
.news-card{
  display:flex;
  flex-direction:row;
  background:#fff;
  border-radius:var(--radius-md);
  overflow:hidden;
  box-shadow:var(--shadow-sm);
  border:1px solid var(--border-light);
  transition:var(--transition);
}
.news-card:hover{
  transform:translateY(-3px);
  box-shadow:var(--shadow-md);
  border-color:rgba(245,158,11,.25);
}
.news-cover{
  width:120px;
  min-width:120px;
  position:relative;
  overflow:hidden;
}
.news-cover img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:var(--transition);
}
.news-card:hover .news-cover img{
  transform:scale(1.05);
}
.news-body{
  padding:18px 20px;
  display:flex;
  flex-direction:column;
  gap:8px;
  flex:1;
  min-width:0;
}
.news-meta{
  display:flex;
  align-items:center;
  gap:10px;
  flex-wrap:wrap;
}
.news-badge{
  display:inline-block;
  background:rgba(245,158,11,.12);
  color:var(--accent-hover);
  font-size:11px;
  font-weight:600;
  padding:4px 12px;
  border-radius:999px;
  white-space:nowrap;
}
.news-date{
  font-size:12px;
  color:var(--text-muted);
}
.news-body h3{
  font-size:16px;
  font-weight:700;
  color:var(--text-main);
  line-height:1.45;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
  transition:var(--transition);
}
.news-card:hover .news-body h3{
  color:var(--primary);
}
.news-body p{
  font-size:13px;
  color:var(--text-muted);
  line-height:1.55;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-empty{
  text-align:center;
  padding:56px 20px;
  color:var(--text-muted);
  font-size:15px;
  background:#fff;
  border-radius:var(--radius-lg);
  border:1px dashed var(--border-light);
}
.news-more{
  text-align:center;
  margin-top:12px;
}

/* 数据统计 */
.stats-section{
  position:relative;
  background-size:cover;
  background-position:center;
  background-attachment:fixed;
  color:#fff;
  padding:80px 0;
}
.stats-overlay{
  position:absolute;
  inset:0;
  background:linear-gradient(120deg,rgba(11,30,63,.92),rgba(20,44,86,.88));
}
.stats-inner{
  position:relative;
  z-index:2;
  text-align:center;
}
.stats-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:32px;
  margin-top:48px;
}
@media(min-width:768px){
  .stats-grid{grid-template-columns:repeat(4,1fr)}
}
.stats-heading{
  font-size:clamp(24px,3vw,34px);
  font-weight:800;
  line-height:1.3;
}
.stats-heading span{
  color:var(--accent);
}
.stats-sub{
  margin-top:10px;
  color:rgba(255,255,255,.8);
  font-size:15px;
}
.stat-item{
  background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.15);
  border-radius:var(--radius-lg);
  padding:28px 20px;
  transition:var(--transition);
  backdrop-filter:blur(8px);
}
.stat-item:hover{
  background:rgba(255,255,255,.14);
  transform:translateY(-4px);
}
.stat-number{
  font-size:clamp(32px,4vw,46px);
  font-weight:800;
  color:var(--accent);
  line-height:1.2;
}
.stat-label{
  font-size:14px;
  color:rgba(255,255,255,.85);
  margin-top:8px;
}
@media(max-width:520px){
  .stats-grid{gap:16px}
  .stat-item{padding:20px 14px}
}

/* 功能特点 */
.feature-section{
  background:#fff;
}
.feature-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:28px;
}
@media(min-width:640px){
  .feature-grid{grid-template-columns:repeat(2,1fr)}
}
@media(min-width:1024px){
  .feature-grid{grid-template-columns:repeat(3,1fr)}
}
.feature-card{
  background:var(--bg-body);
  border:1px solid var(--border-light);
  border-radius:var(--radius-lg);
  padding:32px 28px;
  transition:var(--transition);
}
.feature-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-md);
  border-color:rgba(245,158,11,.25);
  background:#fff;
}
.feature-icon{
  width:54px;
  height:54px;
  background:linear-gradient(135deg,var(--primary),var(--primary-light));
  border-radius:16px;
  display:flex;
  align-items:center;
  justify-content:center;
  color:#fff;
  font-size:22px;
  margin-bottom:20px;
  box-shadow:0 8px 20px rgba(11,30,63,.25);
  transition:var(--transition);
}
.feature-card:hover .feature-icon{
  transform:rotate(-6deg) scale(1.05);
  background:linear-gradient(135deg,var(--accent),var(--accent-hover));
  box-shadow:0 8px 24px rgba(245,158,11,.35);
}
.feature-card h3{
  font-size:18px;
  font-weight:700;
  color:var(--primary);
  margin-bottom:10px;
}
.feature-card p{
  font-size:14px;
  color:var(--text-muted);
  line-height:1.65;
}

/* FAQ */
.faq-section{
  background:var(--bg-body);
}
.faq-list{
  max-width:820px;
  margin:0 auto;
  display:flex;
  flex-direction:column;
  gap:16px;
}
.faq-item{
  background:#fff;
  border:1px solid var(--border-light);
  border-radius:var(--radius-md);
  overflow:hidden;
  transition:var(--transition);
}
.faq-item:hover{
  border-color:rgba(245,158,11,.25);
  box-shadow:var(--shadow-sm);
}
.faq-item details{
  padding:0;
}
.faq-item summary{
  cursor:pointer;
  list-style:none;
  padding:22px 28px;
  font-size:16px;
  font-weight:600;
  color:var(--text-main);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  transition:var(--transition);
  user-select:none;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:'\f078';
  font-family:"Font Awesome 6 Free";
  font-weight:900;
  font-size:14px;
  color:var(--accent);
  transition:var(--transition);
  flex-shrink:0;
}
.faq-item details[open] summary{
  color:var(--primary);
  border-bottom:1px solid var(--border-light);
}
.faq-item details[open] summary::after{
  transform:rotate(180deg);
}
.faq-item details p{
  padding:16px 28px 24px;
  font-size:14px;
  color:var(--text-muted);
  line-height:1.75;
}

/* CTA */
.cta-section{
  position:relative;
  background-size:cover;
  background-position:center;
  color:#fff;
  text-align:center;
  padding:96px 0;
}
.cta-overlay{
  position:absolute;
  inset:0;
  background:linear-gradient(120deg,rgba(11,30,63,.94),rgba(11,30,63,.88));
}
.cta-inner{
  position:relative;
  z-index:2;
  max-width:720px;
  margin:0 auto;
}
.cta-inner h2{
  font-size:clamp(26px,4vw,38px);
  font-weight:800;
  line-height:1.3;
  margin-bottom:16px;
}
.cta-inner h2 span{
  color:var(--accent);
}
.cta-inner p{
  color:rgba(255,255,255,.85);
  font-size:16px;
  line-height:1.7;
  margin-bottom:36px;
}
.cta-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  justify-content:center;
}

/* 页脚 */
.site-footer{
  background:var(--bg-dark);
  color:rgba(255,255,255,.7);
  padding:56px 0 24px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:36px;
  margin-bottom:40px;
}
@media(min-width:768px){
  .footer-grid{grid-template-columns:2fr 1fr 1fr}
}
.footer-brand .logo{
  color:#fff;
  font-size:26px;
  margin-bottom:14px;
}
.footer-brand .logo span{color:var(--accent)}
.footer-brand p{
  font-size:14px;
  line-height:1.7;
  max-width:320px;
  color:rgba(255,255,255,.6);
}
.footer-title{
  font-size:16px;
  font-weight:700;
  color:#fff;
  margin-bottom:18px;
}
.footer-links{
  list-style:none;
  display:flex;
  flex-direction:column;
  gap:10px;
}
.footer-links a{
  font-size:14px;
  color:rgba(255,255,255,.65);
  transition:var(--transition);
}
.footer-links a:hover{
  color:var(--accent);
  padding-left:4px;
}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);
  padding-top:20px;
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:8px;
  text-align:center;
  font-size:13px;
  color:rgba(255,255,255,.45);
}
.footer-bottom .domain{
  font-weight:500;
  color:rgba(255,255,255,.6);
}

/* 通用动画 */
@keyframes fadeUp{
  from{opacity:0;transform:translateY(24px)}
  to{opacity:1;transform:translateY(0)}
}
.animate-up{
  animation:fadeUp .7s ease-out both;
}
.animate-up.delay-1{animation-delay:.1s}
.animate-up.delay-2{animation-delay:.2s}
.animate-up.delay-3{animation-delay:.3s}

/* roulang page: category1 */
/* ========== 设计变量 ========== */
        :root {
            --primary: #1e5eff;
            --primary-dark: #0a3fcc;
            --accent: #ff7a1a;
            --accent-hover: #f05e00;
            --bg-body: #f7f8fc;
            --bg-dark: #0b1026;
            --text-main: #1a2233;
            --text-weak: #7b8499;
            --border-light: #e5e9f2;
            --radius-lg: 20px;
            --radius-md: 14px;
            --shadow-card: 0 10px 40px rgba(15, 23, 42, 0.08);
            --transition-base: all 0.3s ease;
        }

        /* ========== 基础 Reset ========== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Helvetica Neue", Arial, sans-serif;
            background-color: var(--bg-body);
            color: var(--text-main);
            line-height: 1.7;
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition-base);
        }

        button,
        input {
            font-family: inherit;
            border: none;
            outline: none;
            background: none;
        }

        ul,
        ol {
            list-style: none;
        }

        /* ========== 容器 ========== */
        .container {
            width: min(1200px, 92%);
            margin-inline: auto;
        }

        @media (max-width: 640px) {
            .container {
                width: 90%;
            }
        }

        /* ========== 顶部导航 ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            background: rgba(255, 255, 255, 0.88);
            border-bottom: 1px solid rgba(229, 233, 242, 0.8);
            transition: box-shadow 0.3s ease;
        }

        .site-header.scrolled {
            box-shadow: 0 4px 30px rgba(15, 23, 42, 0.08);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 76px;
            gap: 32px;
        }

        .logo {
            display: inline-flex;
            align-items: baseline;
            font-size: 26px;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: var(--bg-dark);
            white-space: nowrap;
        }

        .logo span {
            color: var(--accent);
            margin-left: 4px;
            font-weight: 700;
        }

        .desktop-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            flex: 1;
            justify-content: center;
        }

        .nav-link {
            padding: 10px 18px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 500;
            color: #3d4658;
            position: relative;
            transition: var(--transition-base);
        }

        .nav-link:hover {
            color: var(--primary);
            background: rgba(30, 94, 255, 0.06);
        }

        .nav-link.active {
            color: var(--primary);
            background: rgba(30, 94, 255, 0.1);
            font-weight: 600;
        }

        .nav-link.active::after {
            content: "";
            position: absolute;
            bottom: 4px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            border-radius: 4px;
            background: var(--accent);
        }

        .header-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--accent);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            padding: 11px 22px;
            border-radius: 999px;
            box-shadow: 0 6px 20px rgba(255, 122, 26, 0.3);
            transition: var(--transition-base);
            white-space: nowrap;
        }

        .header-cta:hover {
            background: var(--accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 26px rgba(255, 122, 26, 0.4);
        }

        .header-cta:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
        }

        /* ========== 移动端底部 Tab ========== */
        .mobile-bottom-nav {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 1100;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-top: 1px solid var(--border-light);
            padding: 8px 12px 10px;
            box-shadow: 0 -6px 30px rgba(15, 23, 42, 0.08);
        }

        .mobile-tab {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 4px;
            font-size: 11px;
            font-weight: 500;
            color: #8a93a6;
            padding: 6px 4px;
            border-radius: 14px;
            transition: var(--transition-base);
        }

        .mobile-tab i {
            font-size: 19px;
            line-height: 1;
        }

        .mobile-tab:hover {
            color: var(--primary);
            background: rgba(30, 94, 255, 0.06);
        }

        .mobile-tab.active {
            color: var(--primary);
            font-weight: 600;
        }

        .mobile-tab.active::before {
            content: "";
            position: absolute;
            top: -1px;
            left: 50%;
            transform: translateX(-50%);
            width: 28px;
            height: 3px;
            border-radius: 4px;
            background: var(--accent);
        }

        .mobile-tab {
            position: relative;
            flex: 1;
        }

        /* ========== 页面 Hero ========== */
        .page-hero {
            position: relative;
            padding: 180px 0 110px;
            background:
                linear-gradient(135deg, rgba(5, 8, 22, 0.92) 0%, rgba(11, 16, 38, 0.78) 50%, rgba(15, 23, 42, 0.55) 100%),
                url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            color: #fff;
            overflow: hidden;
        }

        .page-hero::before {
            content: "";
            position: absolute;
            top: -80px;
            right: -60px;
            width: 320px;
            height: 320px;
            background: radial-gradient(circle, rgba(255, 122, 26, 0.3) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .page-hero::after {
            content: "";
            position: absolute;
            bottom: -100px;
            left: 20%;
            width: 260px;
            height: 260px;
            background: radial-gradient(circle, rgba(30, 94, 255, 0.35) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 820px;
            margin-inline: auto;
            text-align: center;
        }

        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.2);
            backdrop-filter: blur(8px);
            padding: 8px 18px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.9);
            margin-bottom: 24px;
        }

        .hero-title {
            font-size: clamp(38px, 6vw, 64px);
            font-weight: 900;
            line-height: 1.12;
            letter-spacing: -1px;
            margin-bottom: 20px;
            text-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
        }

        .hero-title span {
            color: var(--accent);
        }

        .hero-subtitle {
            font-size: 17px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.82);
            max-width: 640px;
            margin: 0 auto 36px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 14px;
            margin-bottom: 28px;
        }

        .hero-note {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            flex-wrap: wrap;
        }

        .hero-note i {
            color: var(--accent);
        }

        /* ========== 按钮 ========== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            font-size: 15px;
            font-weight: 600;
            padding: 14px 32px;
            border-radius: 999px;
            transition: var(--transition-base);
            cursor: pointer;
            line-height: 1.4;
        }

        .btn:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
        }

        .btn-primary {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 8px 24px rgba(255, 122, 26, 0.35);
        }

        .btn-primary:hover {
            background: var(--accent-hover);
            transform: translateY(-3px);
            box-shadow: 0 12px 32px rgba(255, 122, 26, 0.45);
        }

        .btn-outline {
            border: 1px solid rgba(255, 255, 255, 0.35);
            color: #fff;
            background: rgba(255, 255, 255, 0.08);
            backdrop-filter: blur(6px);
        }

        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.18);
            border-color: rgba(255, 255, 255, 0.6);
            transform: translateY(-3px);
        }

        .btn-dark {
            background: var(--bg-dark);
            color: #fff;
            box-shadow: 0 8px 24px rgba(11, 16, 38, 0.2);
        }

        .btn-dark:hover {
            background: #1a2342;
            transform: translateY(-3px);
            box-shadow: 0 12px 30px rgba(11, 16, 38, 0.3);
        }

        /* ========== 板块通用 ========== */
        .section {
            padding: 90px 0;
        }

        .section-alt {
            background: #fff;
        }

        .section-dark {
            background: var(--bg-dark);
            color: #fff;
        }

        .section-head {
            text-align: center;
            max-width: 640px;
            margin: 0 auto 54px;
        }

        .section-tag {
            display: inline-block;
            background: rgba(30, 94, 255, 0.08);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 999px;
            margin-bottom: 16px;
        }

        .section-dark .section-tag {
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
        }

        .section-title {
            font-size: clamp(28px, 4vw, 40px);
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: -0.5px;
            margin-bottom: 14px;
        }

        .section-desc {
            color: var(--text-weak);
            font-size: 16px;
            line-height: 1.8;
        }

        .section-dark .section-desc {
            color: rgba(255, 255, 255, 0.7);
        }

        /* ========== 下载方式卡片 ========== */
        .download-card {
            background: #fff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-card);
            transition: var(--transition-base);
            display: flex;
            flex-direction: column;
            height: 100%;
        }

        .download-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 20px 50px rgba(15, 23, 42, 0.12);
        }

        .download-card .card-media {
            aspect-ratio: 16/10;
            overflow: hidden;
            position: relative;
        }

        .download-card .card-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .download-card:hover .card-media img {
            transform: scale(1.04);
        }

        .download-card .card-media::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(11, 16, 38, 0.35), transparent 50%);
        }

        .card-body {
            padding: 30px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .card-icon {
            width: 48px;
            height: 48px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: #fff;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            margin-bottom: 18px;
            box-shadow: 0 6px 16px rgba(30, 94, 255, 0.25);
        }

        .card-icon.orange {
            background: linear-gradient(135deg, var(--accent), #ff9440);
            box-shadow: 0 6px 16px rgba(255, 122, 26, 0.25);
        }

        .card-icon.green {
            background: linear-gradient(135deg, #22c55e, #15803d);
            box-shadow: 0 6px 16px rgba(34, 197, 94, 0.25);
        }

        .card-title {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-main);
        }

        .card-text {
            color: var(--text-weak);
            font-size: 14px;
            line-height: 1.7;
            flex: 1;
            margin-bottom: 16px;
        }

        .card-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--primary);
            font-weight: 600;
            font-size: 14px;
        }

        .card-link:hover {
            color: var(--accent);
            gap: 12px;
        }

        /* ========== 功能亮点 ========== */
        .feature-card {
            background: #fff;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-card);
            padding: 30px;
            transition: var(--transition-base);
            height: 100%;
            position: relative;
            overflow: hidden;
        }

        .feature-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: linear-gradient(to right, var(--primary), var(--accent));
            transform: scaleX(0);
            transform-origin: left;
            transition: transform 0.4s ease;
        }

        .feature-card:hover::before {
            transform: scaleX(1);
        }

        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: 0 20px 44px rgba(15, 23, 42, 0.1);
        }

        .feature-icon {
            width: 56px;
            height: 56px;
            border-radius: 16px;
            background: rgba(30, 94, 255, 0.1);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin-bottom: 20px;
            transition: var(--transition-base);
        }

        .feature-card:hover .feature-icon {
            background: var(--primary);
            color: #fff;
            transform: scale(1.05);
        }

        .feature-title {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .feature-text {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.7;
        }

        /* ========== 下载流程 ========== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }

        .step-item {
            position: relative;
            text-align: center;
            padding: 36px 20px 30px;
            background: #fff;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-card);
            transition: var(--transition-base);
        }

        .step-item:hover {
            transform: translateY(-6px);
            box-shadow: 0 20px 44px rgba(15, 23, 42, 0.1);
        }

        .step-num {
            position: absolute;
            top: -18px;
            left: 50%;
            transform: translateX(-50%);
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            font-weight: 700;
            font-size: 15px;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 6px 18px rgba(30, 94, 255, 0.3);
        }

        .step-icon {
            font-size: 28px;
            color: var(--primary);
            margin-bottom: 14px;
            margin-top: 8px;
        }

        .step-title {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .step-text {
            font-size: 13px;
            color: var(--text-weak);
            line-height: 1.6;
        }

        /* ========== 多端支持 ========== */
        .device-section {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 54px;
            align-items: center;
        }

        .device-media {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: 0 20px 60px rgba(11, 16, 38, 0.2);
            position: relative;
        }

        .device-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .device-media::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(11, 16, 38, 0.4), transparent 60%);
            pointer-events: none;
        }

        .device-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 18px;
            margin-top: 28px;
        }

        .device-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 14px 16px;
            background: #fff;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            box-shadow: 0 4px 16px rgba(15, 23, 42, 0.04);
            transition: var(--transition-base);
        }

        .device-item:hover {
            border-color: rgba(30, 94, 255, 0.3);
            box-shadow: 0 8px 24px rgba(15, 23, 42, 0.08);
        }

        .device-item i {
            font-size: 20px;
            color: var(--primary);
            width: 32px;
            text-align: center;
        }

        .device-item .device-name {
            font-size: 14px;
            font-weight: 600;
        }

        .device-item .device-spec {
            font-size: 12px;
            color: var(--text-weak);
        }

        /* ========== 数据统计 ========== */
        .stat-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .stat-card {
            text-align: center;
            padding: 40px 20px;
            border-radius: var(--radius-lg);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            transition: var(--transition-base);
        }

        .stat-card:hover {
            background: rgba(255, 255, 255, 0.08);
            transform: translateY(-4px);
        }

        .stat-num {
            font-size: 42px;
            font-weight: 800;
            line-height: 1.2;
            background: linear-gradient(135deg, #fff, #aebbe4);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 8px;
        }

        .stat-label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
        }

        /* ========== FAQ ========== */
        .faq-wrap {
            max-width: 760px;
            margin: 0 auto;
        }

        .faq-item {
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            margin-bottom: 14px;
            box-shadow: 0 4px 16px rgba(15, 23, 42, 0.04);
            overflow: hidden;
            transition: var(--transition-base);
        }

        .faq-item.active {
            border-color: rgba(30, 94, 255, 0.25);
            box-shadow: 0 8px 30px rgba(15, 23, 42, 0.08);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 24px;
            cursor: pointer;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            transition: var(--transition-base);
            user-select: none;
        }

        .faq-question:hover {
            color: var(--primary);
        }

        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(30, 94, 255, 0.1);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            transition: transform 0.3s ease;
        }

        .faq-item.active .faq-icon {
            transform: rotate(45deg);
            background: var(--primary);
            color: #fff;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
        }

        .faq-answer-inner {
            padding: 0 24px 22px;
            font-size: 14px;
            line-height: 1.8;
            color: var(--text-weak);
        }

        /* ========== CTA ========== */
        .cta-section {
            position: relative;
            padding: 100px 0;
            background:
                linear-gradient(135deg, rgba(11, 16, 38, 0.9), rgba(30, 94, 255, 0.6)),
                url('/assets/images/backpic/back-3.png') center/cover no-repeat;
            color: #fff;
            text-align: center;
            overflow: hidden;
        }

        .cta-section::before {
            content: "";
            position: absolute;
            top: -60px;
            left: -60px;
            width: 240px;
            height: 240px;
            background: radial-gradient(circle, rgba(255, 122, 26, 0.3) 0%, transparent 70%);
            border-radius: 50%;
        }

        .cta-title {
            font-size: clamp(28px, 4vw, 44px);
            font-weight: 800;
            margin-bottom: 16px;
            position: relative;
        }

        .cta-desc {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.8);
            max-width: 560px;
            margin: 0 auto 36px;
            position: relative;
        }

        .cta-actions {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
            position: relative;
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.75);
            padding: 70px 0 30px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 50px;
            margin-bottom: 50px;
        }

        .footer-brand .logo {
            color: #fff;
            margin-bottom: 18px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            max-width: 360px;
        }

        .footer-title {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 12px;
        }

        .footer-title::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 0;
            width: 28px;
            height: 3px;
            border-radius: 3px;
            background: var(--accent);
        }

        .footer-links li {
            margin-bottom: 12px;
        }

        .footer-links a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
            transition: var(--transition-base);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .footer-links a:hover {
            color: var(--accent);
            padding-left: 4px;
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding-top: 26px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 13px;
            color: rgba(255, 255, 255, 0.45);
        }

        .footer-bottom .domain {
            font-family: "SF Mono", "Consolas", monospace;
            letter-spacing: 0.5px;
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1024px) {
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 32px 20px;
            }

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

            .device-section {
                grid-template-columns: 1fr;
                gap: 36px;
            }

            .device-media {
                max-height: 380px;
            }
        }

        @media (max-width: 768px) {
            .section {
                padding: 60px 0;
            }

            .desktop-nav,
            .header-cta {
                display: none;
            }

            .mobile-bottom-nav {
                display: flex;
            }

            body {
                padding-bottom: 70px;
            }

            .header-inner {
                height: 64px;
            }

            .logo {
                font-size: 22px;
            }

            .page-hero {
                padding: 130px 0 70px;
            }

            .hero-actions {
                flex-direction: column;
                align-items: center;
            }

            .hero-actions .btn {
                width: 100%;
                max-width: 320px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 36px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .container {
                width: 92%;
            }

            .steps-grid {
                grid-template-columns: 1fr;
            }

            .stat-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }

            .stat-num {
                font-size: 32px;
            }

            .device-list {
                grid-template-columns: 1fr;
            }

            .download-card .card-body {
                padding: 24px;
            }

            .section-head {
                margin-bottom: 38px;
            }
        }

/* roulang page: article */
:root {
    --primary: #2563eb;
    --primary-dark: #1e40af;
    --accent: #f59e0b;
    --bg: #f8fafc;
    --bg-deep: #0f172a;
    --text: #0f172a;
    --text-soft: #64748b;
    --border: #e2e8f0;
    --radius: 16px;
    --shadow: 0 4px 24px rgba(15, 23, 42, 0.07);
    --shadow-hover: 0 12px 40px rgba(15, 23, 42, 0.12);
    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
}

a {
    color: inherit;
    text-decoration: none;
}

img {
    max-width: 100%;
    display: block;
}

button,
input,
textarea {
    font-family: inherit;
}

.site-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== Header ===== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 999;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(226, 232, 240, 0.8);
    box-shadow: 0 1px 12px rgba(15, 23, 42, 0.04);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 68px;
    gap: 24px;
}

.logo {
    font-size: 22px;
    font-weight: 800;
    letter-spacing: -0.02em;
    display: flex;
    align-items: baseline;
    white-space: nowrap;
}

.logo span {
    color: var(--accent);
    font-weight: 700;
}

.desktop-nav {
    display: flex;
    align-items: center;
    gap: 4px;
}

.nav-link {
    display: inline-block;
    padding: 10px 18px;
    border-radius: 999px;
    font-size: 15px;
    font-weight: 500;
    color: var(--text-soft);
    transition: var(--transition);
}

.nav-link:hover {
    color: var(--primary);
    background: #eff6ff;
}

.nav-link.active {
    background: var(--primary);
    color: #fff;
    box-shadow: 0 6px 20px rgba(37, 99, 235, 0.25);
}

.header-cta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--primary);
    color: #fff;
    padding: 10px 22px;
    border-radius: 999px;
    font-size: 14px;
    font-weight: 600;
    transition: var(--transition);
    box-shadow: 0 4px 16px rgba(37, 99, 235, 0.2);
    white-space: nowrap;
}

.header-cta:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 28px rgba(37, 99, 235, 0.3);
}

.header-cta:focus-visible {
    outline: 3px solid rgba(37, 99, 235, 0.35);
    outline-offset: 2px;
}

/* ===== Article Hero ===== */
.article-hero {
    position: relative;
    background: linear-gradient(130deg, rgba(15, 23, 42, 0.94), rgba(30, 64, 175, 0.82)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
    padding: 72px 0 56px;
    color: #fff;
}

.article-breadcrumb {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 8px;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 20px;
}

.article-breadcrumb a {
    color: rgba(255, 255, 255, 0.9);
    transition: var(--transition);
}

.article-breadcrumb a:hover {
    color: var(--accent);
}

.article-breadcrumb .sep {
    color: rgba(255, 255, 255, 0.4);
}

.hero-badge {
    display: inline-block;
    background: rgba(245, 158, 11, 0.2);
    border: 1px solid rgba(245, 158, 11, 0.5);
    color: #fcd34d;
    padding: 5px 16px;
    border-radius: 999px;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 16px;
    letter-spacing: 0.04em;
}

.article-title-wrap {
    max-width: 860px;
    margin: 0 auto;
}

.article-title-wrap h1 {
    font-size: clamp(26px, 4vw, 40px);
    font-weight: 800;
    line-height: 1.3;
    letter-spacing: -0.02em;
    text-align: center;
}

.article-meta {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 24px;
    margin-top: 28px;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.85);
}

.article-meta span {
    display: inline-flex;
    align-items: center;
    gap: 7px;
}

.article-meta i {
    font-size: 13px;
    color: var(--accent);
}

/* ===== Article Layout ===== */
.article-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 340px;
    gap: 32px;
    padding: 52px 0 64px;
}

.article-main {
    background: #fff;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 42px;
    border: 1px solid rgba(226, 232, 240, 0.6);
}

.article-content {
    font-size: 16px;
    line-height: 1.9;
    color: #334155;
}

.article-content h2 {
    font-size: 25px;
    font-weight: 800;
    color: var(--text);
    margin: 38px 0 16px;
    padding-top: 18px;
    border-top: 1px solid #f1f5f9;
}

.article-content h2:first-child {
    margin-top: 0;
    padding-top: 0;
    border-top: none;
}

.article-content h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--text);
    margin: 30px 0 14px;
}

.article-content p {
    margin-bottom: 18px;
}

.article-content ul,
.article-content ol {
    margin-bottom: 20px;
    padding-left: 26px;
}

.article-content ul {
    list-style: disc;
}

.article-content ol {
    list-style: decimal;
}

.article-content li {
    margin-bottom: 8px;
}

.article-content img {
    max-width: 100%;
    height: auto;
    border-radius: 12px;
    margin: 26px 0;
    box-shadow: 0 6px 24px rgba(15, 23, 42, 0.1);
}

.article-content blockquote {
    border-left: 4px solid var(--primary);
    background: #eff6ff;
    padding: 16px 22px;
    border-radius: 0 12px 12px 0;
    margin: 24px 0;
    color: #1e293b;
    font-size: 15px;
}

.article-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 24px 0;
    font-size: 14px;
}

.article-content th,
.article-content td {
    border: 1px solid var(--border);
    padding: 10px 14px;
    text-align: left;
}

.article-content th {
    background: #f8fafc;
    font-weight: 600;
}

.article-content a {
    color: var(--primary);
    text-decoration: underline;
    text-underline-offset: 2px;
}

.article-content a:hover {
    color: var(--primary-dark);
}

/* ===== Article Tags ===== */
.article-footer-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 36px;
    padding-top: 24px;
    border-top: 1px solid #f1f5f9;
}

.tag {
    display: inline-block;
    background: #f1f5f9;
    color: #475569;
    padding: 6px 14px;
    border-radius: 999px;
    font-size: 13px;
    font-weight: 500;
    transition: var(--transition);
    border: 1px solid transparent;
}

.tag:hover {
    background: #eff6ff;
    color: var(--primary);
    border-color: #bfdbfe;
}

/* ===== Not Found ===== */
.not-found-card {
    text-align: center;
    padding: 48px 24px;
}

.not-found-card i {
    font-size: 48px;
    color: var(--text-soft);
    margin-bottom: 16px;
}

.not-found-card h2 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text);
}

.not-found-card p {
    color: var(--text-soft);
    margin-bottom: 24px;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--primary);
    color: #fff;
    padding: 12px 28px;
    border-radius: 999px;
    font-size: 14px;
    font-weight: 600;
    transition: var(--transition);
    box-shadow: 0 4px 16px rgba(37, 99, 235, 0.2);
    border: none;
    cursor: pointer;
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 28px rgba(37, 99, 235, 0.32);
}

.btn-primary:focus-visible {
    outline: 3px solid rgba(37, 99, 235, 0.35);
    outline-offset: 2px;
}

/* ===== Sidebar ===== */
.article-sidebar {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.sidebar-card {
    background: #fff;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 24px;
    border: 1px solid rgba(226, 232, 240, 0.5);
}

.sidebar-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 2px solid #f1f5f9;
    position: relative;
}

.sidebar-title::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -2px;
    width: 32px;
    height: 2px;
    background: var(--accent);
    border-radius: 2px;
}

.sidebar-links {
    list-style: none;
}

.sidebar-links li + li {
    margin-top: 4px;
}

.sidebar-links a {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 12px 14px;
    border-radius: 10px;
    transition: var(--transition);
    color: #475569;
    font-size: 14px;
    font-weight: 500;
}

.sidebar-links a i:first-child {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #eff6ff;
    color: var(--primary);
    border-radius: 8px;
    font-size: 14px;
    transition: var(--transition);
}

.sidebar-links a i:last-child {
    margin-left: auto;
    font-size: 12px;
    color: #cbd5e1;
    transition: var(--transition);
}

.sidebar-links a:hover {
    background: #f8fafc;
    color: var(--primary);
    transform: translateX(3px);
}

.sidebar-links a:hover i:last-child {
    color: var(--primary);
    transform: translateX(3px);
}

.tag-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.tag-cloud .tag {
    background: #f8fafc;
    border: 1px solid var(--border);
    padding: 6px 12px;
    font-size: 13px;
    color: #475569;
}

.tag-cloud .tag:hover {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
    transform: translateY(-2px);
}

.download-card {
    position: relative;
    overflow: hidden;
    background: linear-gradient(150deg, rgba(15, 23, 42, 0.93), rgba(30, 64, 175, 0.88)), url('/assets/images/coverpic/cover-4.png') center/cover no-repeat;
    color: #fff;
    padding: 28px 24px;
    min-height: 210px;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
}

.download-card h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 8px;
}

.download-card p {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 16px;
    line-height: 1.6;
}

.btn-sidebar {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--accent);
    color: #0f172a;
    padding: 10px 20px;
    border-radius: 999px;
    font-size: 13px;
    font-weight: 700;
    transition: var(--transition);
    box-shadow: 0 4px 16px rgba(245, 158, 11, 0.3);
}

.btn-sidebar:hover {
    background: #d97706;
    color: #fff;
    transform: translateY(-2px);
}

/* ===== Related Section ===== */
.related-section {
    background: #f1f5f9;
    padding: 72px 0;
}

.section-head {
    text-align: center;
    margin-bottom: 40px;
}

.section-head .sub {
    color: var(--text-soft);
    font-size: 15px;
    margin-top: 6px;
}

.section-head h2 {
    font-size: 30px;
    font-weight: 800;
    letter-spacing: -0.02em;
    position: relative;
    display: inline-block;
}

.section-head h2::after {
    content: "";
    display: block;
    width: 48px;
    height: 4px;
    background: var(--accent);
    border-radius: 4px;
    margin: 10px auto 0;
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.related-card {
    background: #fff;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid rgba(226, 232, 240, 0.5);
    display: flex;
    flex-direction: column;
}

.related-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-hover);
}

.related-card-img {
    position: relative;
    height: 160px;
    overflow: hidden;
}

.related-card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.related-card:hover .related-card-img img {
    transform: scale(1.06);
}

.related-card-img::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(15, 23, 42, 0.35), transparent 60%);
}

.related-card-tag {
    position: absolute;
    left: 14px;
    bottom: 12px;
    z-index: 2;
    background: rgba(255, 255, 255, 0.9);
    color: var(--primary);
    font-size: 12px;
    font-weight: 600;
    padding: 4px 12px;
    border-radius: 999px;
    backdrop-filter: blur(4px);
}

.related-card-body {
    padding: 18px 20px 20px;
    flex: 1;
}

.related-card-body h3 {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text);
    line-height: 1.4;
}

.related-card-body p {
    font-size: 13px;
    color: var(--text-soft);
    line-height: 1.6;
}

.related-card-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--primary);
    font-size: 13px;
    font-weight: 600;
    margin-top: 12px;
    transition: var(--transition);
}

.related-card-link i {
    font-size: 11px;
    transition: var(--transition);
}

.related-card-link:hover {
    color: var(--primary-dark);
}

.related-card-link:hover i {
    transform: translateX(4px);
}

/* ===== Stats Section ===== */
.stats-section {
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.96), rgba(30, 64, 175, 0.88)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
    padding: 64px 0;
    color: #fff;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    text-align: center;
}

.stat-item {
    padding: 24px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: var(--radius);
    backdrop-filter: blur(6px);
    transition: var(--transition);
}

.stat-item:hover {
    background: rgba(255, 255, 255, 0.12);
    transform: translateY(-4px);
}

.stat-item .num {
    font-size: 40px;
    font-weight: 800;
    line-height: 1.2;
    color: var(--accent);
    margin-bottom: 8px;
}

.stat-item .label {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.85);
}

/* ===== FAQ ===== */
.faq-section {
    background: #fff;
    padding: 72px 0;
}

.faq-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    max-width: 960px;
    margin: 0 auto;
}

.faq-item {
    background: #f8fafc;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px 22px;
    transition: var(--transition);
}

.faq-item:hover {
    border-color: #bfdbfe;
    box-shadow: var(--shadow);
}

.faq-item summary {
    cursor: pointer;
    font-weight: 600;
    font-size: 15px;
    color: var(--text);
    list-style: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    transition: var(--transition);
}

.faq-item summary::-webkit-details-marker {
    display: none;
}

.faq-item summary::after {
    content: "\f078";
    font-family: "Font Awesome 6 Free";
    font-weight: 900;
    font-size: 12px;
    color: var(--text-soft);
    transition: var(--transition);
    flex-shrink: 0;
}

.faq-item[open] summary {
    color: var(--primary);
}

.faq-item[open] summary::after {
    transform: rotate(180deg);
    color: var(--primary);
}

.faq-item .faq-answer {
    margin-top: 14px;
    padding-top: 14px;
    border-top: 1px solid var(--border);
    font-size: 14px;
    color: var(--text-soft);
    line-height: 1.75;
}

/* ===== CTA Section ===== */
.cta-section {
    position: relative;
    background: linear-gradient(120deg, var(--primary), var(--primary-dark));
    padding: 72px 0;
    color: #fff;
    text-align: center;
    overflow: hidden;
}

.cta-section::before {
    content: "";
    position: absolute;
    inset: 0;
    background: url('/assets/images/backpic/back-3.png') center/cover no-repeat;
    opacity: 0.12;
    mix-blend-mode: overlay;
}

.cta-inner {
    position: relative;
    z-index: 1;
    max-width: 720px;
    margin: 0 auto;
}

.cta-inner h2 {
    font-size: 32px;
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: 14px;
}

.cta-inner p {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 30px;
    line-height: 1.7;
}

.cta-btns {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 14px;
}

.cta-btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--accent);
    color: #0f172a;
    padding: 14px 30px;
    border-radius: 999px;
    font-size: 15px;
    font-weight: 700;
    transition: var(--transition);
    box-shadow: 0 6px 24px rgba(245, 158, 11, 0.35);
}

.cta-btn-primary:hover {
    background: #d97706;
    color: #fff;
    transform: translateY(-2px);
}

.cta-btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.15);
    color: #fff;
    padding: 14px 30px;
    border-radius: 999px;
    font-size: 15px;
    font-weight: 600;
    transition: var(--transition);
    border: 1px solid rgba(255, 255, 255, 0.35);
}

.cta-btn-secondary:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: translateY(-2px);
}

/* ===== Footer ===== */
.site-footer {
    background: var(--bg-deep);
    color: #94a3b8;
    padding: 60px 0 28px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 40px;
}

.footer-brand .logo {
    color: #fff;
    font-size: 24px;
    margin-bottom: 16px;
}

.footer-brand p {
    font-size: 14px;
    line-height: 1.8;
    max-width: 340px;
    color: #94a3b8;
}

.footer-title {
    color: #fff;
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 18px;
}

.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links a {
    font-size: 14px;
    color: #94a3b8;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--accent);
    padding-left: 4px;
}

.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    padding-top: 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    font-size: 13px;
}

.footer-bottom .domain {
    color: #64748b;
    font-family: "SF Mono", "Fira Code", monospace;
}

/* ===== Mobile Tab Nav ===== */
.mobile-tab-nav {
    display: none;
}

.mobile-tab-nav .tab-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    font-size: 11px;
    color: #94a3b8;
    transition: var(--transition);
    padding: 4px 0;
}

.mobile-tab-nav .tab-item i {
    font-size: 18px;
    transition: var(--transition);
}

.mobile-tab-nav .tab-item:hover {
    color: var(--primary);
}

.mobile-tab-nav .tab-item.active {
    color: var(--primary);
    font-weight: 600;
}

.mobile-tab-nav .tab-item.active i {
    transform: translateY(-2px);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .related-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .article-layout {
        grid-template-columns: minmax(0, 1fr);
    }

    .article-sidebar {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 20px;
    }

    .faq-grid {
        grid-template-columns: 1fr;
        max-width: 720px;
    }
}

@media (max-width: 768px) {
    .desktop-nav {
        display: none;
    }

    .header-cta {
        display: none;
    }

    .header-inner {
        justify-content: center;
    }

    .mobile-tab-nav {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        background: #fff;
        border-top: 1px solid var(--border);
        padding: 8px 0 max(8px, env(safe-area-inset-bottom)) 0;
        z-index: 1000;
        box-shadow: 0 -4px 20px rgba(15, 23, 42, 0.08);
    }

    body {
        padding-bottom: 64px;
    }

    .article-hero {
        padding: 52px 0 40px;
    }

    .article-main {
        padding: 24px 20px;
    }

    .article-layout {
        padding: 32px 0 40px;
    }

    .article-sidebar {
        display: flex;
        flex-direction: column;
    }

    .related-section,
    .faq-section {
        padding: 52px 0;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
}

@media (max-width: 520px) {
    .site-container {
        padding: 0 16px;
    }

    .article-title-wrap h1 {
        font-size: 24px;
    }

    .article-meta {
        gap: 12px;
        font-size: 13px;
    }

    .article-meta span:nth-child(4) {
        display: none;
    }

    .related-grid {
        grid-template-columns: 1fr;
    }

    .stats-grid {
        grid-template-columns: 1fr 1fr;
        gap: 16px;
    }

    .stat-item .num {
        font-size: 32px;
    }

    .cta-inner h2 {
        font-size: 26px;
    }

    .cta-btns {
        flex-direction: column;
    }

    .footer-bottom {
        justify-content: center;
        text-align: center;
    }

    .article-content h2 {
        font-size: 21px;
    }

    .article-content h3 {
        font-size: 18px;
    }
}

/* ===== Focus Accessibility ===== */
a:focus-visible,
button:focus-visible,
summary:focus-visible {
    outline: 3px solid rgba(37, 99, 235, 0.4);
    outline-offset: 2px;
    border-radius: 4px;
}

/* roulang page: category2 */
/* ===== 设计变量 ===== */
:root {
  --primary: #0e5a8a;
  --primary-light: #2b8cc4;
  --primary-dark: #093b5e;
  --accent: #f0a500;
  --accent-light: #ffc247;
  --dark: #0b1a2a;
  --dark-soft: #132a40;
  --body-bg: #f4f7fb;
  --text-main: #1e2d3d;
  --text-weak: #5e6f82;
  --border-color: #e2e8f0;
  --card-bg: #ffffff;
  --radius: 16px;
  --radius-lg: 24px;
  --shadow-sm: 0 2px 8px rgba(11, 26, 42, 0.06);
  --shadow-md: 0 6px 24px rgba(11, 26, 42, 0.08);
  --shadow-lg: 0 16px 40px rgba(11, 26, 42, 0.12);
  --transition: all 0.3s ease;
}

/* ===== Reset / Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
  background: var(--body-bg);
  color: var(--text-main);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; transition: var(--transition); }
img { max-width: 100%; display: block; }
ul, ol { list-style: none; }
button { font-family: inherit; }
input, select, textarea { font-family: inherit; }

/* ===== 容器 ===== */
.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ===== 通用按钮 ===== */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  padding: 13px 28px; border-radius: 999px; font-size: 15px; font-weight: 600;
  transition: var(--transition); cursor: pointer; border: none; line-height: 1.4;
}
.btn-primary { background: var(--primary); color: #fff; box-shadow: 0 4px 16px rgba(14, 90, 138, 0.28); }
.btn-primary:hover { background: var(--primary-light); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(14, 90, 138, 0.36); }
.btn-accent { background: var(--accent); color: #fff; box-shadow: 0 4px 16px rgba(240, 165, 0, 0.3); }
.btn-accent:hover { background: var(--accent-light); transform: translateY(-2px); box-shadow: 0 8px 28px rgba(240, 165, 0, 0.4); }
.btn-outline { background: transparent; color: var(--primary); border: 2px solid var(--primary); }
.btn-outline:hover { background: rgba(14, 90, 138, 0.06); transform: translateY(-2px); }
.btn-white { background: #fff; color: var(--primary-dark); box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12); }
.btn-white:hover { transform: translateY(-2px); box-shadow: 0 8px 28px rgba(0, 0, 0, 0.18); }

/* ===== Header / Nav ===== */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(226, 232, 240, 0.72);
  height: 72px;
  display: flex; align-items: center;
  box-shadow: 0 2px 12px rgba(11, 26, 42, 0.04);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; width: 100%; }
.logo { font-size: 26px; font-weight: 800; color: var(--primary-dark); letter-spacing: -0.5px; white-space: nowrap; line-height: 1.2; }
.logo span { color: var(--accent); font-weight: 700; }
.desktop-nav { display: flex; align-items: center; gap: 4px; }
.nav-link {
  display: inline-flex; align-items: center; padding: 9px 18px; border-radius: 10px;
  font-size: 15px; font-weight: 500; color: var(--text-weak); white-space: nowrap;
  transition: var(--transition);
}
.nav-link:hover { color: var(--primary); background: rgba(14, 90, 138, 0.07); }
.nav-link.active { color: var(--primary); background: rgba(14, 90, 138, 0.1); font-weight: 600; }
.header-cta {
  display: inline-flex; align-items: center; gap: 8px; padding: 10px 24px;
  background: var(--primary); color: #fff; border-radius: 999px; font-size: 14px;
  font-weight: 600; transition: var(--transition); box-shadow: 0 4px 14px rgba(14, 90, 138, 0.26);
  white-space: nowrap;
}
.header-cta:hover { background: var(--primary-light); transform: translateY(-2px); box-shadow: 0 6px 22px rgba(14, 90, 138, 0.36); }

/* ===== 移动端底部 Tab ===== */
.mobile-tabbar {
  display: none;
  position: fixed; bottom: 0; left: 0; right: 0; z-index: 200;
  background: #fff;
  border-top: 1px solid var(--border-color);
  padding: 8px 10px calc(8px + env(safe-area-inset-bottom));
  justify-content: space-around;
  box-shadow: 0 -4px 24px rgba(11, 26, 42, 0.08);
}
.tab-item {
  display: flex; flex-direction: column; align-items: center; gap: 4px;
  font-size: 11px; color: var(--text-weak); padding: 5px 10px; border-radius: 12px;
  transition: var(--transition); min-width: 60px;
}
.tab-item i { font-size: 19px; transition: var(--transition); }
.tab-item.active { color: var(--primary); font-weight: 600; background: rgba(14, 90, 138, 0.08); }
.tab-item.active i { transform: translateY(-1px); }

/* ===== Hero ===== */
.page-hero {
  position: relative; padding: 150px 0 110px; color: #fff; overflow: hidden;
  background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  isolation: isolate;
}
.page-hero::before {
  content: ''; position: absolute; inset: 0; z-index: -1;
  background: linear-gradient(120deg, rgba(11, 26, 42, 0.92) 0%, rgba(11, 26, 42, 0.68) 55%, rgba(11, 26, 42, 0.42) 100%);
}
.page-hero::after {
  content: ''; position: absolute; inset: 0; z-index: -1;
  background: linear-gradient(to bottom, rgba(11, 26, 42, 0.15) 0%, transparent 40%, transparent 60%, rgba(11, 26, 42, 0.5) 100%);
}
.breadcrumb { display: flex; align-items: center; gap: 8px; font-size: 14px; color: rgba(255, 255, 255, 0.75); margin-bottom: 28px; flex-wrap: wrap; }
.breadcrumb a { color: rgba(255, 255, 255, 0.75); transition: var(--transition); }
.breadcrumb a:hover { color: var(--accent-light); }
.breadcrumb i { font-size: 11px; color: rgba(255, 255, 255, 0.5); }
.hero-title { font-size: 54px; font-weight: 800; line-height: 1.18; letter-spacing: -1px; margin-bottom: 22px; }
.hero-title span { color: var(--accent-light); }
.hero-subtitle { font-size: 18px; line-height: 1.8; color: rgba(255, 255, 255, 0.9); max-width: 680px; margin-bottom: 36px; }
.hero-actions { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }

/* ===== Section 通用 ===== */
.section { padding: 90px 0; }
.section-alt { background: #fff; border-top: 1px solid var(--border-color); border-bottom: 1px solid var(--border-color); }
.section-header { text-align: center; max-width: 720px; margin: 0 auto 56px; }
.section-eyebrow {
  display: inline-flex; align-items: center; gap: 8px; padding: 6px 18px;
  background: rgba(14, 90, 138, 0.08); color: var(--primary); border-radius: 999px;
  font-size: 13px; font-weight: 600; letter-spacing: 0.5px; margin-bottom: 18px;
}
.section-title { font-size: 36px; font-weight: 800; line-height: 1.25; color: var(--dark); letter-spacing: -0.5px; }
.section-title span { color: var(--primary); }
.section-subtitle { margin-top: 14px; font-size: 16px; color: var(--text-weak); line-height: 1.75; }

/* ===== 服务卡片 ===== */
.service-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 24px; }
.service-card {
  background: var(--card-bg); border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm); transition: var(--transition); height: 100%;
}
.service-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: rgba(14, 90, 138, 0.16); }
.service-card-image { height: 190px; overflow: hidden; position: relative; }
.service-card-image img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.service-card:hover .service-card-image img { transform: scale(1.05); }
.service-card-image::after { content: ''; position: absolute; inset: 0; background: linear-gradient(to top, rgba(11, 26, 42, 0.32), transparent 65%); }
.service-card-body { padding: 26px 26px 30px; }
.service-icon {
  width: 48px; height: 48px; border-radius: 14px; display: flex; align-items: center; justify-content: center;
  background: rgba(14, 90, 138, 0.1); color: var(--primary); font-size: 20px; margin-bottom: 16px;
  transition: var(--transition);
}
.service-card:hover .service-icon { background: var(--primary); color: #fff; }
.service-card h3 { font-size: 18px; font-weight: 700; color: var(--dark); margin-bottom: 10px; }
.service-card p { font-size: 14px; color: var(--text-weak); line-height: 1.7; }
.service-more { display: inline-flex; align-items: center; gap: 6px; margin-top: 14px; font-size: 14px; font-weight: 600; color: var(--primary); }

/* ===== 步骤流程 ===== */
.steps-section { background: var(--dark); color: #fff; position: relative; overflow: hidden; }
.steps-section::before {
  content: ''; position: absolute; top: -220px; right: -160px; width: 480px; height: 480px; border-radius: 50%;
  background: radial-gradient(circle, rgba(240, 165, 0, 0.16), transparent 70%);
}
.steps-section .section-title { color: #fff; }
.steps-section .section-subtitle { color: rgba(255, 255, 255, 0.72); }
.steps-section .section-eyebrow { background: rgba(255, 255, 255, 0.12); color: var(--accent-light); }
.step-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 32px; position: relative; }
.step-item { position: relative; padding: 40px 28px; background: rgba(255, 255, 255, 0.06); border-radius: var(--radius-lg); border: 1px solid rgba(255, 255, 255, 0.08); transition: var(--transition); }
.step-item:hover { background: rgba(255, 255, 255, 0.11); transform: translateY(-4px); }
.step-num { font-size: 42px; font-weight: 800; color: rgba(255, 255, 255, 0.14); line-height: 1; margin-bottom: 16px; position: absolute; top: 20px; right: 24px; }
.step-icon { width: 52px; height: 52px; border-radius: 16px; background: rgba(240, 165, 0, 0.15); color: var(--accent-light); display: flex; align-items: center; justify-content: center; font-size: 22px; margin-bottom: 20px; }
.step-item h3 { font-size: 19px; font-weight: 700; margin-bottom: 10px; }
.step-item p { font-size: 14px; color: rgba(255, 255, 255, 0.68); line-height: 1.7; }

/* ===== 数据统计 ===== */
.stats-section { background: #fff; border-bottom: 1px solid var(--border-color); }
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 28px; text-align: center; }
.stat-card { padding: 36px 20px; border-radius: var(--radius-lg); background: var(--body-bg); border: 1px solid var(--border-color); transition: var(--transition); }
.stat-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); border-color: rgba(14, 90, 138, 0.18); }
.stat-num { font-size: 44px; font-weight: 800; color: var(--primary); line-height: 1.1; }
.stat-label { margin-top: 10px; font-size: 14px; color: var(--text-weak); font-weight: 500; }

/* ===== 特色图文 ===== */
.feature-block { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; margin-bottom: 48px; }
.feature-block:last-child { margin-bottom: 0; }
.feature-block.reverse { direction: rtl; }
.feature-block.reverse > * { direction: ltr; }
.feature-image { border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-lg); position: relative; }
.feature-image img { width: 100%; height: 320px; object-fit: cover; transition: transform 0.6s ease; }
.feature-image:hover img { transform: scale(1.03); }
.feature-image::after { content: ''; position: absolute; inset: 0; background: linear-gradient(to top, rgba(11, 26, 42, 0.18), transparent 60%); }
.feature-text h3 { font-size: 28px; font-weight: 800; color: var(--dark); margin-bottom: 18px; line-height: 1.3; }
.feature-text h3 span { color: var(--primary); }
.feature-text p { font-size: 15px; color: var(--text-weak); line-height: 1.8; margin-bottom: 12px; }
.feature-list { margin-top: 18px; display: flex; flex-direction: column; gap: 12px; }
.feature-list li { display: flex; align-items: flex-start; gap: 12px; font-size: 15px; color: var(--text-main); }
.feature-list li i { color: var(--primary); margin-top: 4px; font-size: 16px; width: 20px; text-align: center; }
.feature-tag { display: inline-flex; padding: 5px 14px; background: rgba(14, 90, 138, 0.08); color: var(--primary); border-radius: 999px; font-size: 13px; font-weight: 600; margin-bottom: 18px; }

/* ===== 赛事卡片 ===== */
.match-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 24px; }
.match-card {
  background: #fff; border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm); transition: var(--transition); height: 100%;
}
.match-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.match-banner { height: 180px; position: relative; overflow: hidden; }
.match-banner img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.match-card:hover .match-banner img { transform: scale(1.05); }
.match-banner::after { content: ''; position: absolute; inset: 0; background: linear-gradient(to top, rgba(11, 26, 42, 0.24), transparent 60%); }
.match-badge { position: absolute; top: 16px; left: 16px; z-index: 2; background: var(--accent); color: #fff; padding: 5px 12px; border-radius: 999px; font-size: 12px; font-weight: 600; }
.match-body { padding: 24px; }
.match-body h3 { font-size: 18px; font-weight: 700; margin-bottom: 10px; color: var(--dark); }
.match-behance { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 14px; }
.tag { display: inline-flex; align-items: center; gap: 4px; padding: 4px 12px; background: var(--body-bg); border-radius: 999px; font-size: 12px; color: var(--text-weak); border: 1px solid var(--border-color); }
.tag i { font-size: 11px; }
.match-body p { font-size: 14px; color: var(--text-weak); line-height: 1.7; }

/* ===== FAQ ===== */
.faq-wrap { max-width: 860px; margin: 0 auto; display: flex; flex-direction: column; gap: 16px; }
.faq-item { background: #fff; border: 1px solid var(--border-color); border-radius: 16px; transition: var(--transition); overflow: hidden; }
.faq-item:hover { border-color: rgba(14, 90, 138, 0.2); box-shadow: var(--shadow-sm); }
.faq-item details { padding: 22px 28px; }
.faq-item summary {
  list-style: none; cursor: pointer; display: flex; justify-content: space-between; align-items: center;
  font-size: 16px; font-weight: 600; color: var(--dark); line-height: 1.5;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: '\f078'; font-family: 'Font Awesome 6 Free'; font-weight: 900; font-size: 13px;
  color: var(--primary); background: rgba(14, 90, 138, 0.08); width: 30px; height: 30px;
  border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0;
  transition: var(--transition);
}
.faq-item details[open] summary::after { transform: rotate(180deg); background: var(--primary); color: #fff; }
.faq-item p { margin-top: 16px; font-size: 15px; color: var(--text-weak); line-height: 1.8; padding-left: 2px; }

/* ===== CTA ===== */
.cta-section {
  position: relative; padding: 90px 0; color: #fff; text-align: center; overflow: hidden;
  background: url('/assets/images/backpic/back-2.png') center/cover no-repeat fixed;
  isolation: isolate;
}
.cta-section::before { content: ''; position: absolute; inset: 0; z-index: -1; background: rgba(11, 26, 42, 0.78); }
.cta-title { font-size: 38px; font-weight: 800; line-height: 1.3; margin-bottom: 16px; letter-spacing: -0.5px; }
.cta-title span { color: var(--accent-light); }
.cta-subtitle { font-size: 16px; color: rgba(255, 255, 255, 0.82); max-width: 620px; margin: 0 auto 36px; }
.cta-actions { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }

/* ===== Footer ===== */
.site-footer { background: var(--dark); color: rgba(255, 255, 255, 0.72); padding: 70px 0 30px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 48px; margin-bottom: 48px; }
.footer-brand .logo { color: #fff; font-size: 24px; }
.footer-brand p { margin-top: 16px; font-size: 14px; line-height: 1.8; color: rgba(255, 255, 255, 0.58); max-width: 360px; }
.footer-title { font-size: 16px; font-weight: 700; color: #fff; margin-bottom: 20px; }
.footer-links { display: flex; flex-direction: column; gap: 12px; }
.footer-links a { font-size: 14px; color: rgba(255, 255, 255, 0.58); transition: var(--transition); }
.footer-links a:hover { color: var(--accent-light); padding-left: 4px; }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.12); padding-top: 24px;
  display: flex; justify-content: space-between; align-items: center;
  font-size: 13px; color: rgba(255, 255, 255, 0.42); flex-wrap: wrap; gap: 12px;
}
.domain { letter-spacing: 1px; }

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .desktop-nav { display: none; }
  .header-cta { display: none; }
  .site-header { height: 64px; }
  .mobile-tabbar { display: flex; }
  body { padding-bottom: 64px; }
  .page-hero { padding: 130px 0 90px; }
  .hero-title { font-size: 42px; }
  .feature-block { grid-template-columns: 1fr; gap: 36px; }
  .feature-block.reverse { direction: ltr; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
}
@media (max-width: 768px) {
  .section { padding: 68px 0; }
  .section-title { font-size: 28px; }
  .hero-title { font-size: 34px; }
  .hero-subtitle { font-size: 16px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .stat-num { font-size: 34px; }
  .cta-title { font-size: 28px; }
  .step-grid { grid-template-columns: 1fr; gap: 20px; }
}
@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .page-hero { padding: 112px 0 76px; }
  .hero-title { font-size: 29px; }
  .hero-actions { flex-direction: column; align-items: stretch; gap: 12px; }
  .hero-actions .btn { width: 100%; }
  .service-grid { grid-template-columns: 1fr; }
  .match-grid { grid-template-columns: 1fr; }
  .section-title { font-size: 25px; }
  .feature-text h3 { font-size: 22px; }
  .footer-bottom { flex-direction: column; text-align: center; justify-content: center; }
  .faq-item details { padding: 18px 20px; }
}

/* ===== 动画辅助 ===== */
.fade-in { opacity: 0; animation: fadeUp 0.8s ease forwards; }
.fade-in.delay-1 { animation-delay: 0.1s; }
.fade-in.delay-2 { animation-delay: 0.2s; }
.fade-in.delay-3 { animation-delay: 0.3s; }
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* roulang page: category3 */
:root {
      --brand: #f97316;
      --brand-dark: #ea580c;
      --accent: #22d3ee;
      --bg: #0b1120;
      --card: rgba(255, 255, 255, 0.04);
      --border: rgba(255, 255, 255, 0.08);
      --text: #f1f5f9;
      --text-weak: #94a3b8;
      --radius: 16px;
      --shadow: 0 20px 44px rgba(0, 0, 0, 0.35);
    }

    * {
      box-sizing: border-box;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      margin: 0;
      background: var(--bg);
      color: var(--text);
      font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', system-ui, sans-serif;
      line-height: 1.7;
      -webkit-font-smoothing: antialiased;
    }
    a {
      color: inherit;
      text-decoration: none;
    }
    img {
      display: block;
      max-width: 100%;
    }

    .container {
      width: 100%;
      max-width: 1240px;
      margin: 0 auto;
      padding-left: 24px;
      padding-right: 24px;
    }

    .section-pad {
      padding: 84px 0;
    }
    @media (max-width: 768px) {
      .section-pad {
        padding: 56px 0;
      }
    }

    .section-head {
      text-align: center;
      max-width: 640px;
      margin: 0 auto 52px;
    }
    .section-tag {
      display: inline-block;
      font-size: 0.8rem;
      font-weight: 700;
      letter-spacing: 0.14em;
      text-transform: uppercase;
      color: var(--brand);
      background: rgba(249, 115, 22, 0.12);
      border: 1px solid rgba(249, 115, 22, 0.3);
      border-radius: 999px;
      padding: 6px 16px;
      margin-bottom: 16px;
    }
    .section-head h2 {
      font-size: clamp(1.9rem, 3.4vw, 2.8rem);
      font-weight: 800;
      line-height: 1.2;
      letter-spacing: -0.02em;
      margin: 0 0 14px;
    }
    .section-head p {
      color: var(--text-weak);
      font-size: 1.02rem;
      margin: 0;
    }

    /* Buttons */
    .btn-primary,
    .btn-ghost {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-weight: 600;
      border-radius: 999px;
      padding: 14px 30px;
      font-size: 0.95rem;
      transition: all 0.25s ease;
      cursor: pointer;
    }
    .btn-primary {
      background: var(--brand);
      color: #fff;
      box-shadow: 0 8px 28px rgba(249, 115, 22, 0.35);
    }
    .btn-primary:hover {
      background: var(--brand-dark);
      transform: translateY(-2px);
      box-shadow: 0 12px 32px rgba(249, 115, 22, 0.45);
    }
    .btn-ghost {
      background: rgba(255, 255, 255, 0.06);
      border: 1px solid rgba(255, 255, 255, 0.18);
      color: #f1f5f9;
      backdrop-filter: blur(8px);
    }
    .btn-ghost:hover {
      background: rgba(255, 255, 255, 0.12);
      border-color: rgba(255, 255, 255, 0.3);
      transform: translateY(-2px);
    }

    /* Badges */
    .badge {
      display: inline-flex;
      align-items: center;
      gap: 4px;
      font-size: 0.75rem;
      font-weight: 700;
      padding: 4px 12px;
      border-radius: 999px;
      letter-spacing: 0.02em;
    }
    .badge-orange {
      background: rgba(249, 115, 22, 0.15);
      color: #fb923c;
      border: 1px solid rgba(249, 115, 22, 0.3);
    }
    .badge-cyan {
      background: rgba(34, 211, 238, 0.12);
      color: #22d3ee;
      border: 1px solid rgba(34, 211, 238, 0.3);
    }
    .badge-outline {
      background: transparent;
      border: 1px solid rgba(255, 255, 255, 0.2);
      color: #cbd5e1;
    }

    /* Header */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 50;
      background: rgba(2, 6, 23, 0.82);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
      gap: 24px;
    }
    .logo {
      font-size: 1.5rem;
      font-weight: 800;
      letter-spacing: -0.02em;
      white-space: nowrap;
    }
    .logo span {
      color: var(--brand);
    }
    .desktop-nav {
      display: flex;
      align-items: center;
      gap: 32px;
    }
    .nav-link {
      position: relative;
      font-size: 0.95rem;
      font-weight: 500;
      color: #cbd5e1;
      padding: 8px 2px;
      transition: color 0.2s;
      white-space: nowrap;
    }
    .nav-link:hover {
      color: #fff;
    }
    .nav-link.active {
      color: var(--brand);
    }
    .nav-link.active::after {
      content: '';
      position: absolute;
      left: 0;
      right: 0;
      bottom: -2px;
      height: 2px;
      background: var(--brand);
      border-radius: 2px;
    }
    .header-cta {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: var(--brand);
      color: #fff;
      font-weight: 600;
      font-size: 0.88rem;
      padding: 9px 20px;
      border-radius: 999px;
      white-space: nowrap;
      transition: all 0.25s;
    }
    .header-cta:hover {
      background: var(--brand-dark);
      transform: translateY(-2px);
      box-shadow: 0 8px 24px rgba(249, 115, 22, 0.3);
    }

    /* Hero */
    .page-hero {
      position: relative;
      min-height: 620px;
      display: flex;
      align-items: center;
      overflow: hidden;
    }
    .hero-bg {
      position: absolute;
      inset: 0;
      background-size: cover;
      background-position: center;
      transform: scale(1.06);
    }
    .hero-overlay {
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, rgba(2, 6, 23, 0.5) 0%, rgba(2, 6, 23, 0.72) 55%, #0b1120 100%);
    }
    .hero-content {
      position: relative;
      z-index: 2;
      padding-top: 96px;
      padding-bottom: 112px;
      text-align: center;
      max-width: 860px;
      margin: 0 auto;
    }
    .hero-pill {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      font-size: 0.82rem;
      font-weight: 700;
      color: #fb923c;
      background: rgba(2, 6, 23, 0.45);
      border: 1px solid rgba(249, 115, 22, 0.35);
      border-radius: 999px;
      padding: 8px 20px;
      margin-bottom: 28px;
      backdrop-filter: blur(8px);
      letter-spacing: 0.04em;
    }
    .hero-title {
      font-size: clamp(2.3rem, 5.4vw, 4.1rem);
      font-weight: 800;
      line-height: 1.14;
      letter-spacing: -0.02em;
      margin: 0 0 20px;
    }
    .hero-title .gradient-text {
      background: linear-gradient(135deg, #f97316, #fb923c 55%, #fbbf24);
      -webkit-background-clip: text;
      background-clip: text;
      color: transparent;
    }
    .hero-sub {
      color: #cbd5e1;
      font-size: 1.08rem;
      line-height: 1.8;
      max-width: 620px;
      margin: 0 auto 36px;
    }
    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 16px;
      margin-bottom: 36px;
    }
    .hero-meta {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 24px;
      font-size: 0.85rem;
      color: var(--text-weak);
    }
    .hero-meta span {
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .hero-meta i {
      color: var(--accent);
    }

    /* Stats */
    .stats-section {
      position: relative;
      z-index: 3;
      margin-top: -48px;
      padding-bottom: 64px;
    }
    .stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .stat-item {
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: var(--radius);
      padding: 28px 20px;
      text-align: center;
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      transition: transform 0.25s, border-color 0.25s;
    }
    .stat-item:hover {
      transform: translateY(-4px);
      border-color: rgba(249, 115, 22, 0.35);
    }
    .stat-num {
      font-size: 2.5rem;
      font-weight: 800;
      color: var(--brand);
      line-height: 1;
    }
    .stat-label {
      color: var(--text-weak);
      font-size: 0.88rem;
      margin-top: 8px;
    }

    /* News */
    .news-section {
      background: rgba(255, 255, 255, 0.015);
      border-top: 1px solid rgba(255, 255, 255, 0.04);
      border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    }
    .news-card {
      display: flex;
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: 20px;
      overflow: hidden;
      transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
    }
    .news-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow);
      border-color: rgba(249, 115, 22, 0.3);
    }
    .news-thumb {
      flex: 0 0 42%;
      overflow: hidden;
      min-height: 220px;
    }
    .news-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.5s ease;
    }
    .news-card:hover .news-thumb img {
      transform: scale(1.05);
    }
    .news-body {
      padding: 28px 30px;
      display: flex;
      flex-direction: column;
      justify-content: center;
    }
    .news-tags {
      display: flex;
      align-items: center;
      gap: 8px;
      margin-bottom: 14px;
    }
    .news-time {
      font-size: 0.78rem;
      color: var(--text-weak);
    }
    .news-body h3 {
      font-size: 1.22rem;
      font-weight: 700;
      line-height: 1.45;
      margin: 0 0 12px;
    }
    .news-body h3 a {
      transition: color 0.2s;
    }
    .news-body h3 a:hover {
      color: var(--brand);
    }
    .news-body p {
      color: var(--text-weak);
      font-size: 0.92rem;
      margin: 0 0 18px;
    }
    .news-more {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-size: 0.86rem;
      font-weight: 600;
      color: #fb923c;
      transition: gap 0.2s;
    }
    .news-more:hover {
      gap: 10px;
      color: var(--brand);
    }

    .rank-panel {
      background: rgba(255, 255, 255, 0.035);
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: 20px;
      padding: 28px;
    }
    .rank-title {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 1.1rem;
      font-weight: 700;
      margin-bottom: 20px;
      color: #fb923c;
    }
    .rank-list {
      list-style: none;
      padding: 0;
      margin: 0;
    }
    .rank-list li {
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    }
    .rank-list li:last-child {
      border-bottom: none;
    }
    .rank-list a {
      display: flex;
      align-items: center;
      gap: 14px;
      padding: 16px 0;
      transition: background 0.2s;
    }
    .rank-list a:hover {
      background: rgba(255, 255, 255, 0.03);
    }
    .rank-num {
      font-size: 1.3rem;
      font-weight: 800;
      color: rgba(255, 255, 255, 0.18);
      min-width: 32px;
    }
    .rank-list h4 {
      font-size: 0.92rem;
      font-weight: 600;
      margin: 0 0 2px;
      color: #e2e8f0;
      line-height: 1.4;
    }
    .rank-list p {
      font-size: 0.8rem;
      color: var(--text-weak);
      margin: 0;
    }

    /* Schedule */
    .schedule-section {
      position: relative;
      overflow: hidden;
    }
    .schedule-bg {
      position: absolute;
      inset: 0;
      background-size: cover;
      background-position: center;
    }
    .schedule-overlay {
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, #0b1120 0%, rgba(2, 6, 23, 0.88) 50%, #0b1120 100%);
    }
    .schedule-section .container {
      position: relative;
      z-index: 2;
    }
    .schedule-list {
      display: flex;
      flex-direction: column;
      gap: 16px;
      max-width: 880px;
      margin: 0 auto;
    }
    .schedule-row {
      display: flex;
      align-items: center;
      gap: 24px;
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(255, 255, 255, 0.09);
      border-radius: 16px;
      padding: 20px 28px;
      transition: background 0.25s, border-color 0.25s;
    }
    .schedule-row:hover {
      background: rgba(255, 255, 255, 0.07);
      border-color: rgba(249, 115, 22, 0.3);
    }
    .schedule-time {
      font-size: 1.25rem;
      font-weight: 800;
      color: var(--brand);
      min-width: 76px;
    }
    .schedule-match {
      flex: 1;
    }
    .match-sport {
      display: block;
      font-size: 0.78rem;
      color: var(--text-weak);
      margin-bottom: 2px;
      letter-spacing: 0.04em;
    }
    .schedule-match strong {
      font-size: 1.06rem;
      font-weight: 700;
    }
    .schedule-match strong i {
      font-size: 0.75rem;
      color: var(--text-weak);
      padding: 0 8px;
    }

    /* Category cards */
    .category-section {
      border-top: 1px solid rgba(255, 255, 255, 0.04);
      border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    }
    .category-card {
      position: relative;
      border-radius: 20px;
      min-height: 230px;
      padding: 32px 26px;
      display: flex;
      flex-direction: column;
      justify-content: flex-end;
      overflow: hidden;
      background-size: cover;
      background-position: center;
      border: 1px solid rgba(255, 255, 255, 0.1);
      transition: transform 0.3s, box-shadow 0.3s;
    }
    .category-card::before {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(200deg, rgba(2, 6, 23, 0.25) 0%, rgba(2, 6, 23, 0.92) 100%);
    }
    .category-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow);
    }
    .category-card > * {
      position: relative;
      z-index: 1;
    }
    .category-icon {
      width: 52px;
      height: 52px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.4rem;
      color: #fb923c;
      background: rgba(249, 115, 22, 0.18);
      border: 1px solid rgba(249, 115, 22, 0.35);
      border-radius: 14px;
      margin-bottom: 18px;
    }
    .category-card h3 {
      font-size: 1.3rem;
      font-weight: 800;
      margin: 0 0 6px;
    }
    .category-card p {
      font-size: 0.86rem;
      color: var(--text-weak);
      margin: 0;
    }

    /* Video scroll */
    .video-section {
      overflow: hidden;
    }
    .scroll-area {
      display: flex;
      gap: 20px;
      overflow-x: auto;
      padding: 4px 8px 20px;
      scrollbar-width: none;
      -ms-overflow-style: none;
    }
    .scroll-area::-webkit-scrollbar {
      display: none;
    }
    .video-card {
      flex: 0 0 280px;
      border-radius: 18px;
      overflow: hidden;
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(255, 255, 255, 0.08);
      transition: transform 0.3s, box-shadow 0.3s;
    }
    .video-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow);
    }
    .video-thumb {
      position: relative;
      aspect-ratio: 16 / 10;
      overflow: hidden;
    }
    .video-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .play-btn {
      position: absolute;
      inset: 0;
      display: flex;
      align-items: center;
      justify-content: center;
      background: rgba(2, 6, 23, 0.35);
      color: #fff;
      font-size: 1.6rem;
      transition: background 0.3s, transform 0.3s;
    }
    .play-btn i {
      width: 54px;
      height: 54px;
      display: flex;
      align-items: center;
      justify-content: center;
      background: rgba(249, 115, 22, 0.9);
      border-radius: 50%;
      box-shadow: 0 6px 20px rgba(249, 115, 22, 0.4);
    }
    .video-card:hover .play-btn {
      background: rgba(2, 6, 23, 0.5);
    }
    .video-info {
      padding: 18px 20px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 12px;
    }
    .video-info h4 {
      font-size: 0.95rem;
      font-weight: 600;
      line-height: 1.4;
      margin: 0;
      flex: 1;
    }
    .video-info span {
      font-size: 0.78rem;
      color: var(--text-weak);
      white-space: nowrap;
    }

    /* Quotes */
    .quote-section {
      background: rgba(255, 255, 255, 0.015);
      border-top: 1px solid rgba(255, 255, 255, 0.04);
      border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    }
    .quote-card {
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: 20px;
      padding: 32px 28px;
      position: relative;
      transition: transform 0.3s, border-color 0.3s;
    }
    .quote-card:hover {
      transform: translateY(-4px);
      border-color: rgba(249, 115, 22, 0.3);
    }
    .quote-card > i {
      font-size: 1.4rem;
      color: var(--brand);
      opacity: 0.7;
      margin-bottom: 14px;
    }
    .quote-card p {
      color: #e2e8f0;
      font-size: 0.98rem;
      line-height: 1.75;
      margin: 0 0 20px;
    }
    .quote-card footer {
      color: var(--text-weak);
      font-size: 0.86rem;
      font-weight: 600;
    }

    /* FAQ */
    .faq-section {
      max-width: 860px;
      margin: 0 auto;
    }
    .faq-item {
      background: rgba(255, 255, 255, 0.03);
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: 16px;
      margin-bottom: 14px;
      overflow: hidden;
      transition: border-color 0.25s;
    }
    .faq-item:hover {
      border-color: rgba(249, 115, 22, 0.25);
    }
    .faq-item summary {
      display: flex;
      align-items: center;
      justify-content: space-between;
      list-style: none;
      cursor: pointer;
      padding: 22px 24px;
      font-weight: 600;
      font-size: 0.98rem;
      color: #f1f5f9;
    }
    .faq-item summary::-webkit-details-marker {
      display: none;
    }
    .faq-item summary i {
      transition: transform 0.3s;
      color: var(--text-weak);
      font-size: 0.9rem;
    }
    .faq-item[open] summary i {
      transform: rotate(180deg);
      color: var(--brand);
    }
    .faq-item p {
      padding: 0 24px 22px;
      color: var(--text-weak);
      font-size: 0.92rem;
      line-height: 1.8;
      margin: 0;
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      padding-top: 16px;
    }

    /* CTA */
    .cta-section {
      padding: 84px 0;
    }
    .cta-box {
      position: relative;
      border-radius: 28px;
      padding: 76px 40px;
      text-align: center;
      background-image: url('/assets/images/backpic/back-3.png');
      background-size: cover;
      background-position: center;
      overflow: hidden;
      border: 1px solid rgba(255, 255, 255, 0.1);
    }
    .cta-box::before {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(135deg, rgba(2, 6, 23, 0.9) 0%, rgba(15, 23, 42, 0.75) 100%);
    }
    .cta-box > * {
      position: relative;
      z-index: 1;
    }
    .cta-box h2 {
      font-size: clamp(1.9rem, 3.6vw, 2.9rem);
      font-weight: 800;
      margin: 0 0 16px;
      letter-spacing: -0.02em;
    }
    .cta-box p {
      color: #cbd5e1;
      font-size: 1.02rem;
      max-width: 540px;
      margin: 0 auto 32px;
    }

    /* Footer */
    .site-footer {
      background: #020617;
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      padding: 72px 0 32px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.6fr 1fr 1fr;
      gap: 48px;
      margin-bottom: 48px;
    }
    .footer-brand .logo {
      font-size: 1.5rem;
      font-weight: 800;
      margin-bottom: 16px;
    }
    .footer-brand p {
      color: var(--text-weak);
      font-size: 0.9rem;
      line-height: 1.8;
      max-width: 360px;
      margin: 0;
    }
    .footer-title {
      font-size: 1.02rem;
      font-weight: 700;
      margin-bottom: 18px;
      color: #e2e8f0;
    }
    .footer-links {
      list-style: none;
      padding: 0;
      margin: 0;
    }
    .footer-links li {
      margin-bottom: 10px;
    }
    .footer-links a {
      color: var(--text-weak);
      font-size: 0.9rem;
      transition: color 0.2s, padding-left 0.2s;
    }
    .footer-links a:hover {
      color: var(--brand);
      padding-left: 4px;
    }
    .footer-bottom {
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 12px;
      padding-top: 28px;
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      color: var(--text-weak);
      font-size: 0.84rem;
    }
    .domain {
      font-family: 'SF Mono', 'Consolas', monospace;
      letter-spacing: 0.03em;
    }

    /* Mobile Tab Bar */
    .mobile-tabbar {
      display: none;
    }

    @media (max-width: 900px) {
      .desktop-nav {
        gap: 20px;
      }
      .nav-link {
        font-size: 0.86rem;
      }
    }

    @media (max-width: 768px) {
      .desktop-nav {
        display: none;
      }
      .header-cta {
        padding: 8px 14px;
        font-size: 0.82rem;
      }
      .logo {
        font-size: 1.22rem;
      }
      .hero-actions {
        flex-direction: column;
        align-items: center;
      }
      .btn-primary,
      .btn-ghost {
        width: 100%;
        max-width: 320px;
        justify-content: center;
      }
      .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 14px;
      }
      .stat-item {
        padding: 22px 14px;
      }
      .stat-num {
        font-size: 2rem;
      }
      .news-card {
        flex-direction: column;
      }
      .news-thumb {
        flex: none;
        min-height: 190px;
      }
      .news-body {
        padding: 22px;
      }
      .schedule-row {
        flex-wrap: wrap;
        gap: 12px;
        padding: 18px 20px;
      }
      .schedule-time {
        min-width: auto;
        font-size: 1.05rem;
      }
      .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
      }
      .footer-bottom {
        flex-direction: column;
        text-align: center;
      }
      body {
        padding-bottom: 64px;
      }
      .mobile-tabbar {
        display: flex;
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        z-index: 60;
        background: rgba(2, 6, 23, 0.96);
        backdrop-filter: blur(16px);
        -webkit-backdrop-filter: blur(16px);
        border-top: 1px solid rgba(255, 255, 255, 0.08);
        height: 64px;
        align-items: center;
        justify-content: space-around;
      }
      .tab-item {
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 3px;
        flex: 1;
        color: var(--text-weak);
        font-size: 0.72rem;
        transition: color 0.2s;
        padding: 6px 0;
      }
      .tab-item i {
        font-size: 1.15rem;
      }
      .tab-item.active {
        color: var(--brand);
      }
      .tab-item span {
        font-size: 0.72rem;
        font-weight: 500;
      }
      .cta-box {
        padding: 56px 24px;
      }
      .cta-box .hero-actions {
        flex-direction: column;
        align-items: center;
      }
    }

    @media (max-width: 520px) {
      .container {
        padding-left: 16px;
        padding-right: 16px;
      }
      .section-head {
        margin-bottom: 36px;
      }
      .stats-grid {
        grid-template-columns: 1fr 1fr;
      }
      .category-card {
        min-height: 190px;
      }
      .video-card {
        flex-basis: 240px;
      }
    }