/* roulang page: index */
:root {
  --bg-primary: #0b1124;
  --bg-secondary: #162044;
  --bg-card: rgba(255,255,255,0.05);
  --border-glass: rgba(255,255,255,0.08);
  --shadow-glass: 0 8px 32px rgba(0,0,0,0.4);
  --clr-primary: #2d7ff9;
  --clr-primary-hover: #4a9fff;
  --clr-primary-active: #1a5fbf;
  --clr-accent: #00d4aa;
  --clr-accent-glow: rgba(0,212,170,0.3);
  --clr-purple: #8b5cf6;
  --clr-gold: #f59e0b;
  --clr-gold-hover: #f7b731;
  --clr-gold-active: #d48a00;
  --clr-glow-gold: rgba(245,158,11,0.35);
  --text-white: #ffffff;
  --text-heading: #e0e8ff;
  --text-body: #b0b8d0;
  --text-muted: #7a82a0;
  --text-disabled: #4a5270;
  --radius-card: 16px;
  --radius-sm: 12px;
  --radius-btn: 8px;
  --radius-input: 10px;
  --radius-badge: 4px;
  --spacer-section: 80px;
  --spacer-inner: 24px;
  --max-width: 1280px;
  --font-cn: 'PingFang SC','Microsoft YaHei','Noto Sans SC',sans-serif;
  --font-en: 'Inter','Roboto',sans-serif;
  --header-h: 72px;
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font-cn);background:var(--bg-primary);color:var(--text-body);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:var(--clr-primary);text-decoration:none;transition:color 0.2s}
a:hover{color:var(--clr-primary-hover)}
img{max-width:100%;height:auto;display:block}
button,input,select,textarea{font-family:inherit;font-size:inherit;outline:none;border:none}
ul,ol{list-style:none}
h1,h2,h3,h4,h5,h6{color:var(--text-white);font-weight:600;line-height:1.25}
h1{font-size:48px;font-weight:700;letter-spacing:-0.02em}
h2{font-size:36px;font-weight:600;letter-spacing:-0.01em}
h3{font-size:24px;font-weight:600}
p{font-size:16px;line-height:1.6;color:var(--text-body)}
.container{max-width:var(--max-width);margin:0 auto;padding:0 20px}
.section{padding:var(--spacer-section) 0}
.section-title{text-align:center;margin-bottom:48px}
.section-title h2{margin-bottom:12px}
.section-title p{font-size:18px;color:var(--text-muted);max-width:640px;margin:0 auto}
.glass-card{background:var(--bg-card);border:1px solid var(--border-glass);backdrop-filter:blur(24px);-webkit-backdrop-filter:blur(24px);box-shadow:var(--shadow-glass);border-radius:var(--radius-card);transition:transform 0.3s,box-shadow 0.3s}
.glass-card:hover{transform:translateY(-8px);box-shadow:0 12px 48px rgba(0,0,0,0.4),0 0 30px rgba(45,127,249,0.25)}
.btn{display:inline-flex;align-items:center;justify-content:center;font-weight:500;border-radius:var(--radius-btn);cursor:pointer;transition:all 0.25s;height:44px;padding:0 24px;font-size:16px;border:1px solid transparent;gap:8px}
.btn-primary{background:var(--clr-primary);color:#fff;border-color:var(--clr-primary)}
.btn-primary:hover{background:var(--clr-primary-hover);box-shadow:0 0 20px rgba(45,127,249,0.35);color:#fff}
.btn-primary:active{background:var(--clr-primary-active);box-shadow:inset 0 2px 8px rgba(0,0,0,0.3)}
.btn-secondary{background:transparent;color:var(--text-white);border-color:var(--clr-primary)}
.btn-secondary:hover{background:rgba(45,127,249,0.2);border-color:var(--clr-primary-hover);color:#fff}
.btn-cta{background:var(--clr-gold);color:#fff;border-color:var(--clr-gold);font-size:18px;height:52px;padding:0 32px;font-weight:600;box-shadow:0 0 20px rgba(245,158,11,0.25);animation:pulse-glow 2.5s infinite}
.btn-cta:hover{background:var(--clr-gold-hover);box-shadow:0 0 40px rgba(245,158,11,0.45);color:#fff;animation-duration:1s}
.btn-cta:active{background:var(--clr-gold-active);transform:translateY(1px)}
.btn-lg{height:52px;padding:0 32px;font-size:18px}
@keyframes pulse-glow{0%,100%{box-shadow:0 0 20px rgba(245,158,11,0.25)}50%{box-shadow:0 0 40px rgba(245,158,11,0.5)}}
.badge{display:inline-block;padding:2px 10px;border-radius:var(--radius-badge);font-size:12px;font-weight:500;background:rgba(45,127,249,0.15);color:var(--clr-primary);letter-spacing:0.02em}

/* ===== Header / Nav ===== */
header{position:fixed;top:0;left:0;width:100%;height:var(--header-h);z-index:1000;background:rgba(11,17,36,0.85);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid rgba(255,255,255,0.06);transition:background 0.3s}
header.scrolled{background:rgba(11,17,36,0.96)}
.nav-inner{display:flex;align-items:center;justify-content:center;height:var(--header-h);position:relative;max-width:var(--max-width);margin:0 auto;padding:0 20px}
.nav-left,.nav-right{display:flex;align-items:center;gap:32px;flex:1}
.nav-right{justify-content:flex-end}
.nav-logo{position:absolute;left:50%;transform:translateX(-50%);display:flex;align-items:center;gap:10px;font-size:22px;font-weight:700;color:var(--text-white);letter-spacing:0.5px}
.nav-logo i{font-size:26px;color:var(--clr-gold);background:rgba(245,158,11,0.15);width:40px;height:40px;display:flex;align-items:center;justify-content:center;border-radius:10px}
.nav-logo span{background:linear-gradient(135deg,#fff 40%,var(--clr-gold));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.nav-left a,.nav-right a{color:var(--text-muted);font-size:15px;font-weight:500;transition:color 0.2s,transform 0.2s;position:relative;padding:4px 0}
.nav-left a::after,.nav-right a::after{content:'';position:absolute;bottom:-2px;left:0;width:0;height:3px;background:var(--clr-primary);border-radius:2px;transition:width 0.25s}
.nav-left a:hover,.nav-right a:hover{color:var(--clr-primary);transform:translateY(-2px)}
.nav-left a:hover::after,.nav-right a:hover::after{width:100%}
.nav-left a.active,.nav-right a.active{color:var(--clr-primary)}
.nav-left a.active::after,.nav-right a.active::after{width:100%}
.nav-toggle{display:none;flex-direction:column;gap:5px;cursor:pointer;background:none;border:none;padding:8px;z-index:1001}
.nav-toggle span{display:block;width:26px;height:2px;background:var(--text-white);border-radius:2px;transition:all 0.3s}
.nav-toggle.open span:nth-child(1){transform:rotate(45deg) translate(5px,5px)}
.nav-toggle.open span:nth-child(2){opacity:0}
.nav-toggle.open span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px)}
.mobile-menu{display:none;position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(11,17,36,0.98);backdrop-filter:blur(40px);-webkit-backdrop-filter:blur(40px);z-index:999;flex-direction:column;align-items:center;justify-content:center;gap:28px;opacity:0;pointer-events:none;transition:opacity 0.35s}
.mobile-menu.open{opacity:1;pointer-events:auto}
.mobile-menu a{font-size:24px;color:var(--text-body);font-weight:500;padding:8px 0;transition:color 0.2s}
.mobile-menu a:hover,.mobile-menu a.active{color:var(--clr-primary)}

/* ===== Hero ===== */
.hero{min-height:80vh;display:flex;align-items:center;position:relative;overflow:hidden;padding-top:var(--header-h);background:linear-gradient(135deg,#0b1124 0%,#162044 100%)}
.hero-bg{position:absolute;inset:0;background:url('/assets/images/backpic/back-1.webp') center 30% / cover no-repeat;opacity:0.12;pointer-events:none}
.hero-grid{position:absolute;inset:0;background-image:radial-gradient(circle at 20% 50%,rgba(45,127,249,0.08) 0%,transparent 50%),radial-gradient(circle at 80% 30%,rgba(139,92,246,0.06) 0%,transparent 50%);pointer-events:none}
.hero .container{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:48px;padding-top:40px;padding-bottom:40px}
.hero-content{flex:1;max-width:640px}
.hero-content h1{font-size:52px;line-height:1.1;margin-bottom:16px;color:var(--text-white)}
.hero-content h1 em{font-style:normal;background:linear-gradient(135deg,var(--clr-gold),var(--clr-accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-sub{font-size:20px;color:var(--text-heading);margin-bottom:24px;line-height:1.5;font-weight:400}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap}
.hero-visual{flex:0 0 420px;position:relative}
.hero-visual img{width:100%;border-radius:20px;box-shadow:0 0 40px rgba(45,127,249,0.2),0 8px 32px rgba(0,0,0,0.5);border:1px solid rgba(45,127,249,0.15)}

/* ===== Metrics ===== */
.metrics-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.metric-card{text-align:center;padding:28px 20px;border-radius:var(--radius-card);background:var(--bg-card);border:1px solid var(--border-glass);backdrop-filter:blur(24px);-webkit-backdrop-filter:blur(24px);box-shadow:var(--shadow-glass);transition:transform 0.3s}
.metric-card:hover{transform:translateY(-6px)}
.metric-number{font-size:40px;font-weight:700;line-height:1.1;margin-bottom:4px;text-shadow:0 0 20px rgba(0,212,170,0.2)}
.metric-number.gold{color:var(--clr-gold);text-shadow:0 0 20px rgba(245,158,11,0.2)}
.metric-number.accent{color:var(--clr-accent);text-shadow:0 0 20px rgba(0,212,170,0.2)}
.metric-label{font-size:14px;color:var(--text-white);font-weight:500;margin-bottom:6px}
.metric-trend{font-size:12px;display:flex;align-items:center;justify-content:center;gap:4px;color:var(--text-muted)}
.metric-trend i{font-size:11px}
.metric-trend.up{color:var(--clr-accent)}
.metric-trend.down{color:#ef4444}

/* ===== Services ===== */
.services-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.service-card{padding:32px;border-radius:var(--radius-card);background:var(--bg-card);border:1px solid var(--border-glass);backdrop-filter:blur(24px);-webkit-backdrop-filter:blur(24px);box-shadow:var(--shadow-glass);transition:transform 0.3s,box-shadow 0.3s}
.service-card:hover{transform:translateY(-8px);box-shadow:0 12px 48px rgba(0,0,0,0.4),0 0 30px rgba(45,127,249,0.25)}
.service-icon{width:56px;height:56px;border-radius:50%;display:flex;align-items:center;justify-content:center;background:rgba(45,127,249,0.15);margin-bottom:16px;transition:background 0.3s}
.service-icon i{font-size:24px;color:var(--clr-primary)}
.service-card:hover .service-icon{background:rgba(45,127,249,0.25)}
.service-card h3{font-size:20px;margin-bottom:8px;color:var(--text-white)}
.service-card p{font-size:14px;color:var(--text-body);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:12px;line-height:1.5}
.service-link{font-size:14px;color:var(--clr-primary);display:inline-flex;align-items:center;gap:4px;transition:gap 0.25s}
.service-link i{font-size:12px;transition:transform 0.25s}
.service-card:hover .service-link{gap:8px}
.service-card:hover .service-link i{transform:translateX(4px)}

/* ===== News / CMS ===== */
.news-list{display:flex;flex-direction:column;gap:16px}
.news-item{display:flex;gap:16px;padding:16px;border-radius:var(--radius-sm);background:var(--bg-card);border:1px solid var(--border-glass);transition:background 0.25s;align-items:flex-start}
.news-item:hover{background:rgba(255,255,255,0.04)}
.news-thumb{flex:0 0 80px;width:80px;height:80px;border-radius:8px;overflow:hidden;background:var(--bg-secondary)}
.news-thumb img{width:100%;height:100%;object-fit:cover}
.news-body{flex:1;min-width:0}
.news-body h4{font-size:18px;color:var(--text-white);margin-bottom:4px;transition:color 0.2s;font-weight:600}
.news-body h4 a{color:var(--text-white)}
.news-body h4 a:hover{color:var(--clr-primary)}
.news-excerpt{font-size:14px;color:var(--text-body);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin-bottom:8px;line-height:1.4}
.news-meta{display:flex;align-items:center;gap:12px;font-size:12px;color:var(--text-muted);flex-wrap:wrap}
.news-meta .badge{font-size:11px;padding:1px 8px}
.news-meta a{font-size:12px;color:var(--clr-primary)}
.news-empty{text-align:center;padding:48px 20px;color:var(--text-muted)}
.news-empty i{font-size:48px;color:var(--text-disabled);margin-bottom:12px;display:block}
.news-empty p{font-size:16px}

/* ===== Comparison ===== */
.comparison-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;position:relative}
.comparison-divider{position:absolute;left:50%;top:0;bottom:0;width:1px;background:linear-gradient(to bottom,transparent,var(--clr-primary),transparent);opacity:0.3}
.compare-col{padding:32px;border-radius:var(--radius-card);transition:all 0.3s}
.compare-col.traditional{background:rgba(255,255,255,0.02);border:1px solid rgba(255,255,255,0.04)}
.compare-col.traditional .compare-icon{background:rgba(255,255,255,0.05)}
.compare-col.traditional .compare-icon i{color:var(--text-disabled)}
.compare-col.traditional .compare-number{color:var(--text-muted)}
.compare-col.modern{background:rgba(45,127,249,0.05);border:1px solid rgba(45,127,249,0.12);box-shadow:0 0 30px rgba(45,127,249,0.08)}
.compare-col.modern .compare-icon{background:rgba(45,127,249,0.18)}
.compare-col.modern .compare-icon i{color:var(--clr-primary)}
.compare-col.modern .compare-number{color:var(--clr-accent);text-shadow:0 0 12px rgba(0,212,170,0.15)}
.compare-icon{width:48px;height:48px;border-radius:12px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;font-size:22px}
.compare-col h3{font-size:20px;margin-bottom:16px}
.compare-points{display:flex;flex-direction:column;gap:14px}
.compare-point{display:flex;justify-content:space-between;align-items:center;padding:10px 14px;background:rgba(255,255,255,0.03);border-radius:8px}
.compare-point-label{font-size:14px;color:var(--text-body)}
.compare-number{font-size:22px;font-weight:700}
.compare-col.modern .compare-number.gold{color:var(--clr-gold);text-shadow:0 0 12px rgba(245,158,11,0.15)}
.compare-cta{margin-top:24px;text-align:center}

/* ===== FAQ ===== */
.faq-list{max-width:800px;margin:0 auto;display:flex;flex-direction:column;gap:0}
.faq-item{border-bottom:1px solid rgba(255,255,255,0.06);overflow:hidden}
.faq-question{display:flex;align-items:center;gap:12px;padding:16px 20px;cursor:pointer;background:none;border:none;width:100%;text-align:left;font-size:16px;color:var(--text-white);font-weight:500;transition:background 0.2s;border-radius:8px}
.faq-question:hover{background:rgba(255,255,255,0.03)}
.faq-question .q-icon{flex:0 0 24px;width:24px;height:24px;border-radius:50%;background:rgba(45,127,249,0.15);display:flex;align-items:center;justify-content:center;font-size:12px;color:var(--clr-primary);font-weight:700}
.faq-question .q-text{flex:1}
.faq-question .q-arrow{font-size:14px;color:var(--text-muted);transition:transform 0.35s}
.faq-item.open .faq-question .q-arrow{transform:rotate(180deg)}
.faq-item.open .faq-question{border-left:3px solid var(--clr-primary);border-radius:8px 4px 4px 8px}
.faq-answer{padding:0 20px 20px 56px;font-size:14px;line-height:1.8;color:var(--text-body);max-height:0;overflow:hidden;transition:max-height 0.4s ease,padding 0.4s ease}
.faq-item.open .faq-answer{max-height:500px;padding-bottom:20px}

/* ===== CTA Form ===== */
.cta-form-section{background:linear-gradient(135deg,#0b1124,#162044);position:relative;border-top:2px solid rgba(45,127,249,0.15);border-bottom:2px solid rgba(45,127,249,0.15)}
.cta-form-section::before{content:'';position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,var(--clr-primary),transparent);opacity:0.3}
.cta-form-section::after{content:'';position:absolute;bottom:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,var(--clr-primary),transparent);opacity:0.3}
.cta-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.cta-left{padding:40px 0}
.cta-left h2{font-size:32px;margin-bottom:8px}
.cta-left .cta-sub{font-size:16px;color:var(--text-muted);margin-bottom:28px}
.cta-form{display:flex;flex-direction:column;gap:16px}
.cta-form .form-group{display:flex;flex-direction:column;gap:6px}
.cta-form label{font-size:14px;color:var(--text-white);font-weight:500}
.cta-form input,.cta-form select{height:48px;padding:0 16px;border-radius:var(--radius-input);background:rgba(255,255,255,0.05);border:1px solid rgba(255,255,255,0.1);color:var(--text-white);font-size:16px;transition:border-color 0.25s,box-shadow 0.25s}
.cta-form input::placeholder{color:var(--text-disabled)}
.cta-form input:focus,.cta-form select:focus{border-color:var(--clr-primary);box-shadow:0 0 16px rgba(45,127,249,0.2)}
.cta-form select option{background:var(--bg-primary);color:var(--text-white)}
.cta-form .btn-cta{margin-top:8px}
.cta-right{display:flex;flex-direction:column;gap:20px;justify-content:center;padding:40px 0}
.trust-item{display:flex;align-items:center;gap:14px;padding:16px 20px;border-radius:var(--radius-sm);background:rgba(255,255,255,0.03);border:1px solid rgba(255,255,255,0.06)}
.trust-icon{width:40px;height:40px;border-radius:50%;display:flex;align-items:center;justify-content:center;background:rgba(45,127,249,0.12);font-size:18px;color:var(--clr-primary);flex:0 0 40px}
.trust-text{font-size:14px;color:var(--text-body);font-weight:400}

/* ===== Footer ===== */
footer{background:#060a16;border-top:1px solid rgba(255,255,255,0.05);padding:48px 0 0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.5fr;gap:32px;padding-bottom:32px}
.footer-brand .nav-logo{position:static;transform:none;justify-content:flex-start;margin-bottom:12px;font-size:20px}
.footer-brand p{font-size:14px;color:var(--text-muted);line-height:1.6;max-width:280px;margin-bottom:16px}
.footer-social{display:flex;gap:12px}
.footer-social a{width:36px;height:36px;border-radius:50%;display:flex;align-items:center;justify-content:center;background:rgba(255,255,255,0.06);color:var(--text-muted);font-size:16px;transition:all 0.25s}
.footer-social a:hover{background:var(--clr-primary);color:#fff}
.footer-col h4{font-size:16px;font-weight:600;color:var(--text-white);margin-bottom:16px}
.footer-col ul li{margin-bottom:8px}
.footer-col ul li a{font-size:14px;color:var(--text-muted);transition:color 0.2s;line-height:2}
.footer-col ul li a:hover{color:var(--clr-primary)}
.footer-contact li{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text-body);margin-bottom:12px}
.footer-contact li i{width:16px;color:var(--clr-primary);font-size:14px}
.footer-bottom{border-top:1px solid rgba(255,255,255,0.05);padding:16px 0;text-align:center;font-size:12px;color:var(--text-disabled)}
.footer-bottom a{color:var(--text-disabled)}
.footer-bottom a:hover{color:var(--clr-primary)}

/* ===== Responsive ===== */
@media(max-width:1024px){
  h1{font-size:38px}
  h2{font-size:30px}
  .hero-content h1{font-size:40px}
  .hero-visual{flex:0 0 320px}
  .metrics-grid{grid-template-columns:repeat(2,1fr)}
  .services-grid{grid-template-columns:repeat(2,1fr)}
  .comparison-grid{grid-template-columns:1fr;gap:32px}
  .comparison-divider{display:none}
  .cta-grid{grid-template-columns:1fr;gap:24px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:24px}
  .nav-left,.nav-right{gap:20px}
}
@media(max-width:768px){
  .nav-left,.nav-right{display:none}
  .nav-toggle{display:flex}
  .mobile-menu{display:flex}
  h1{font-size:32px}
  h2{font-size:26px}
  h3{font-size:20px}
  .hero .container{flex-direction:column;padding-top:20px;padding-bottom:20px}
  .hero-content h1{font-size:34px}
  .hero-visual{flex:0 0 auto;width:100%;max-width:360px;margin-top:16px}
  .hero-sub{font-size:17px}
  .metrics-grid{grid-template-columns:repeat(2,1fr);gap:16px}
  .metric-number{font-size:32px}
  .services-grid{grid-template-columns:1fr;gap:16px}
  .service-card{padding:24px}
  .news-item{flex-direction:column}
  .news-thumb{width:100%;height:120px;flex:0 0 auto}
  .comparison-grid{gap:24px}
  .compare-col{padding:24px}
  .cta-left{padding:24px 0}
  .cta-right{padding:16px 0}
  .footer-grid{grid-template-columns:1fr;gap:24px}
  .section{padding:48px 0}
  .section-title{margin-bottom:32px}
  .container{padding:0 16px}
  .faq-question{padding:14px 16px;font-size:15px}
  .faq-answer{padding:0 16px 16px 44px;font-size:13px}
  .hero-actions{flex-direction:column;width:100%}
  .hero-actions .btn{width:100%;justify-content:center}
}
@media(max-width:480px){
  h1{font-size:28px}
  h2{font-size:22px}
  .hero-content h1{font-size:28px}
  .metric-number{font-size:26px}
  .metrics-grid{grid-template-columns:1fr;gap:12px}
  .nav-logo{font-size:18px}
  .nav-logo i{width:34px;height:34px;font-size:20px}
  .cta-form input,.cta-form select{font-size:14px}
  .btn-cta{font-size:16px;height:48px}
}

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --clr-bg: #0b1124;
            --clr-bg2: #162044;
            --clr-primary: #2d7ff9;
            --clr-primary-light: #4a9fff;
            --clr-primary-dark: #1a5fbf;
            --clr-accent: #00d4aa;
            --clr-purple: #8b5cf6;
            --clr-gold: #f59e0b;
            --clr-gold-light: #f7b731;
            --clr-gold-dark: #d48a00;
            --clr-white: #ffffff;
            --clr-heading: #ffffff;
            --clr-subheading: #e0e8ff;
            --clr-body: #b0b8d0;
            --clr-muted: #7a82a0;
            --clr-disabled: #4a5270;
            --clr-border: rgba(255,255,255,0.08);
            --clr-glass: rgba(255,255,255,0.05);
            --clr-glass-border: rgba(255,255,255,0.08);
            --radius-card: 16px;
            --radius-sm: 8px;
            --radius-xs: 4px;
            --radius-input: 10px;
            --shadow-card: 0 8px 32px rgba(0,0,0,0.3);
            --shadow-hover: 0 12px 48px rgba(0,0,0,0.4);
            --shadow-glow-primary: 0 0 30px rgba(45,127,249,0.3);
            --shadow-glow-gold: 0 0 40px rgba(245,158,11,0.35);
            --font-sans: 'PingFang SC','Microsoft YaHei','Noto Sans SC',sans-serif;
            --font-num: 'Inter','Roboto',sans-serif;
            --max-width: 1280px;
            --header-h: 72px;
            --section-gap: 80px;
        }

        /* ===== Reset & Base ===== */
        *,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
        html{scroll-behavior:smooth;font-size:16px}
        body{font-family:var(--font-sans);background:var(--clr-bg);color:var(--clr-body);line-height:1.6;-webkit-font-smoothing:antialiased;min-height:100vh}
        a{color:inherit;text-decoration:none;transition:color .2s}
        a:hover{color:var(--clr-primary)}
        img{max-width:100%;height:auto;display:block}
        button,input,select,textarea{font-family:inherit;font-size:inherit;outline:none;border:none;background:none;color:inherit}
        ul,ol{list-style:none}
        h1,h2,h3,h4,h5,h6{color:var(--clr-heading);font-weight:600;line-height:1.25}
        .container{max-width:var(--max-width);margin:0 auto;padding:0 20px}
        @media(max-width:767px){.container{padding:0 16px}}

        /* ===== Header / Nav ===== */
        #header{position:fixed;top:0;left:0;width:100%;height:var(--header-h);z-index:1000;background:rgba(11,17,36,0.85);backdrop-filter:blur(24px);-webkit-backdrop-filter:blur(24px);border-bottom:1px solid var(--clr-border);transition:background .3s}
        .nav-inner{max-width:var(--max-width);margin:0 auto;padding:0 20px;height:100%;display:flex;align-items:center;justify-content:space-between;position:relative}
        .nav-left,.nav-right{display:flex;align-items:center;gap:32px}
        .nav-left a,.nav-right a{font-size:14px;font-weight:500;color:var(--clr-body);position:relative;padding:4px 0;transition:color .2s,transform .2s}
        .nav-left a:hover,.nav-right a:hover{color:var(--clr-primary);transform:translateY(-2px)}
        .nav-left a.active,.nav-right a.active{color:var(--clr-primary)}
        .nav-left a.active::after,.nav-right a.active::after{content:'';position:absolute;bottom:-2px;left:0;width:100%;height:3px;background:var(--clr-primary);border-radius:2px}
        .nav-logo{position:absolute;left:50%;transform:translateX(-50%);display:flex;align-items:center;gap:8px;font-size:18px;font-weight:700;color:var(--clr-white);letter-spacing:-0.02em}
        .nav-logo i{color:var(--clr-gold);font-size:22px}
        .nav-logo span{background:linear-gradient(135deg,var(--clr-white),var(--clr-subheading));-webkit-background-clip:text;-webkit-text-fill-color:transparent}
        .nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:6px;border-radius:6px;transition:background .2s;z-index:1001}
        .nav-toggle span{display:block;width:22px;height:2px;background:var(--clr-white);border-radius:2px;transition:all .3s}
        .nav-toggle.active span:nth-child(1){transform:rotate(45deg) translate(5px,5px)}
        .nav-toggle.active span:nth-child(2){opacity:0}
        .nav-toggle.active span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px)}
        @media(max-width:1023px){
            .nav-left,.nav-right{display:none}
            .nav-toggle{display:flex}
            .nav-logo{position:static;transform:none;font-size:16px}
            .nav-inner{justify-content:space-between}
            .nav-mobile{display:flex !important;flex-direction:column;position:fixed;top:0;left:0;width:100%;height:100vh;background:rgba(11,17,36,0.98);backdrop-filter:blur(40px);-webkit-backdrop-filter:blur(40px);z-index:999;padding:100px 40px 40px;gap:24px;overflow-y:auto}
            .nav-mobile a{font-size:20px;color:var(--clr-white);font-weight:500;padding:12px 0;border-bottom:1px solid var(--clr-border)}
            .nav-mobile a.active{color:var(--clr-primary)}
            .nav-mobile a:last-child{border-bottom:none}
        }
        @media(max-width:767px){
            .nav-mobile{padding:80px 24px 24px}
            .nav-mobile a{font-size:18px}
        }

        /* ===== Article Page ===== */
        .article-page{padding-top:calc(var(--header-h) + 40px);padding-bottom:60px;min-height:100vh}
        .article-breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--clr-muted);margin-bottom:32px}
        .article-breadcrumb a{color:var(--clr-muted);transition:color .2s}
        .article-breadcrumb a:hover{color:var(--clr-primary)}
        .article-breadcrumb .sep{color:var(--clr-disabled);font-size:12px;user-select:none}
        .article-breadcrumb .current{color:var(--clr-white);font-weight:500;max-width:280px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
        .article-header{margin-bottom:40px}
        .article-header h1{font-size:36px;font-weight:700;line-height:1.2;color:var(--clr-white);margin-bottom:16px;letter-spacing:-0.02em}
        .article-meta{display:flex;align-items:center;flex-wrap:wrap;gap:16px 24px;font-size:14px;color:var(--clr-muted)}
        .article-meta .meta-item{display:flex;align-items:center;gap:6px}
        .article-meta .meta-item i{font-size:13px;color:var(--clr-primary)}
        .article-meta .tag{display:inline-block;padding:2px 12px;border-radius:var(--radius-xs);background:rgba(45,127,249,0.15);color:var(--clr-primary);font-size:12px;font-weight:500}
        .article-body{max-width:800px;margin:0 auto}
        .article-content{font-size:16px;line-height:1.8;color:var(--clr-body)}
        .article-content h2{font-size:24px;font-weight:600;color:var(--clr-white);margin:36px 0 16px;padding-bottom:10px;border-bottom:1px solid var(--clr-border)}
        .article-content h3{font-size:20px;font-weight:600;color:var(--clr-white);margin:28px 0 12px}
        .article-content p{margin-bottom:20px;text-indent:2em}
        .article-content a{color:var(--clr-primary);border-bottom:1px solid transparent;transition:border-color .2s}
        .article-content a:hover{border-bottom-color:var(--clr-primary)}
        .article-content blockquote{border-left:4px solid var(--clr-primary);background:rgba(45,127,249,0.06);padding:16px 24px;margin:24px 0;border-radius:0 var(--radius-sm) var(--radius-sm) 0;font-style:italic;color:var(--clr-subheading);font-size:15px}
        .article-content blockquote p{text-indent:0;margin-bottom:0}
        .article-content code{background:#0a0e1a;border-radius:6px;padding:2px 8px;font-size:14px;font-family:'Consolas','Courier New',monospace;color:var(--clr-accent)}
        .article-content pre{background:#0a0e1a;border-radius:var(--radius-sm);padding:20px;overflow-x:auto;margin:24px 0;border:1px solid var(--clr-border)}
        .article-content pre code{background:transparent;padding:0;border-radius:0;color:var(--clr-body);font-size:14px;line-height:1.6}
        .article-content img{width:100%;border-radius:12px;margin:24px 0;box-shadow:0 4px 24px rgba(0,0,0,0.3)}
        .article-content ul,.article-content ol{padding-left:20px;margin-bottom:20px;line-height:1.8}
        .article-content ul{list-style:disc}
        .article-content ol{list-style:decimal}
        .article-content ul li::marker,.article-content ol li::marker{color:var(--clr-primary)}
        .article-content table{width:100%;border-collapse:collapse;margin:24px 0;font-size:14px}
        .article-content th,.article-content td{padding:12px 16px;border:1px solid var(--clr-border);text-align:left}
        .article-content th{background:rgba(45,127,249,0.1);color:var(--clr-subheading);font-weight:600}
        .article-content td{color:var(--clr-body)}
        .article-content hr{border:none;height:1px;background:linear-gradient(90deg,transparent,var(--clr-border),transparent);margin:40px 0}

        /* ===== Not Found ===== */
        .article-notfound{text-align:center;padding:80px 20px;max-width:600px;margin:0 auto}
        .article-notfound .icon-circle{width:80px;height:80px;border-radius:50%;background:rgba(45,127,249,0.1);display:flex;align-items:center;justify-content:center;margin:0 auto 24px;font-size:36px;color:var(--clr-primary)}
        .article-notfound h2{font-size:24px;color:var(--clr-white);margin-bottom:12px}
        .article-notfound p{color:var(--clr-muted);margin-bottom:24px;font-size:15px}
        .article-notfound .btn-back{display:inline-flex;align-items:center;gap:8px;padding:10px 24px;border-radius:var(--radius-sm);border:1px solid var(--clr-primary);color:var(--clr-primary);font-weight:500;font-size:14px;transition:all .3s}
        .article-notfound .btn-back:hover{background:rgba(45,127,249,0.12);box-shadow:var(--shadow-glow-primary)}

        /* ===== Related Posts ===== */
        .related-section{margin-top:60px;padding-top:40px;border-top:1px solid var(--clr-border)}
        .related-section h3{font-size:20px;font-weight:600;color:var(--clr-white);margin-bottom:24px;display:flex;align-items:center;gap:8px}
        .related-section h3 i{color:var(--clr-primary);font-size:18px}
        .related-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
        .related-card{background:var(--clr-glass);border:1px solid var(--clr-border);border-radius:12px;padding:20px;transition:all .3s}
        .related-card:hover{background:rgba(255,255,255,0.07);border-color:rgba(45,127,249,0.2);transform:translateY(-4px);box-shadow:0 8px 24px rgba(0,0,0,0.3)}
        .related-card .title{font-size:15px;font-weight:500;color:var(--clr-white);line-height:1.4;margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
        .related-card .title a{color:var(--clr-white);transition:color .2s}
        .related-card .title a:hover{color:var(--clr-primary)}
        .related-card .meta{font-size:12px;color:var(--clr-muted);display:flex;align-items:center;justify-content:space-between}
        .related-card .meta .date{display:flex;align-items:center;gap:4px}
        .related-card .meta .read-link{color:var(--clr-primary);font-weight:500;font-size:12px}
        @media(max-width:1023px){.related-grid{grid-template-columns:repeat(2,1fr)}}
        @media(max-width:767px){.related-grid{grid-template-columns:1fr}}

        /* ===== Bottom Nav ===== */
        .article-bottom-nav{margin-top:40px;display:flex;justify-content:center}
        .btn-back-list{display:inline-flex;align-items:center;gap:8px;padding:10px 24px;border-radius:var(--radius-sm);border:1px solid var(--clr-border);color:var(--clr-muted);font-size:14px;font-weight:500;transition:all .3s}
        .btn-back-list:hover{color:var(--clr-primary);border-color:var(--clr-primary);background:rgba(45,127,249,0.06);box-shadow:var(--shadow-glow-primary)}

        /* ===== Footer ===== */
        footer{background:#060a16;border-top:1px solid var(--clr-border);padding:60px 0 0}
        .footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
        .footer-brand p{font-size:14px;color:var(--clr-muted);line-height:1.7;margin-bottom:20px;max-width:320px}
        .footer-social{display:flex;gap:14px}
        .footer-social a{width:36px;height:36px;border-radius:50%;background:rgba(255,255,255,0.06);display:flex;align-items:center;justify-content:center;color:var(--clr-muted);font-size:16px;transition:all .3s;border:1px solid transparent}
        .footer-social a:hover{background:rgba(45,127,249,0.15);color:var(--clr-primary);border-color:rgba(45,127,249,0.2);transform:translateY(-2px)}
        .footer-col h4{font-size:15px;font-weight:600;color:var(--clr-white);margin-bottom:20px}
        .footer-col ul li{margin-bottom:10px}
        .footer-col ul li a{font-size:14px;color:var(--clr-muted);transition:color .2s}
        .footer-col ul li a:hover{color:var(--clr-primary)}
        .footer-contact li{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--clr-body);margin-bottom:12px}
        .footer-contact li i{width:18px;color:var(--clr-primary);font-size:14px}
        .footer-bottom{border-top:1px solid var(--clr-border);padding:20px 0;margin-top:40px;text-align:center;font-size:13px;color:var(--clr-disabled)}
        @media(max-width:1023px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
        @media(max-width:767px){.footer-grid{grid-template-columns:1fr;gap:32px}.footer-brand p{max-width:100%}}

        /* ===== Responsive ===== */
        @media(max-width:767px){
            .article-page{padding-top:calc(var(--header-h) + 24px)}
            .article-header h1{font-size:26px}
            .article-meta{font-size:13px;gap:12px}
            .article-content{font-size:15px}
            .article-content h2{font-size:20px}
            .article-content h3{font-size:18px}
            .article-content p{text-indent:1.5em}
            .article-breadcrumb{font-size:12px}
            .article-breadcrumb .current{max-width:160px}
            .related-section h3{font-size:18px}
        }
        @media(min-width:768px)and(max-width:1023px){
            .article-header h1{font-size:30px}
            .article-body{max-width:700px}
        }

        /* ===== Animations ===== */
        @keyframes fadeUp{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}
        .article-page{animation:fadeUp .5s ease forwards}

        /* ===== Misc ===== */
        ::selection{background:rgba(45,127,249,0.3);color:var(--clr-white)}
        ::-webkit-scrollbar{width:6px;height:6px}
        ::-webkit-scrollbar-track{background:var(--clr-bg)}
        ::-webkit-scrollbar-thumb{background:var(--clr-disabled);border-radius:3px}
        ::-webkit-scrollbar-thumb:hover{background:var(--clr-muted)}

/* roulang page: category1 */
:root {
  --clr-primary: #2d7ff9;
  --clr-primary-hover: #4a9fff;
  --clr-primary-active: #1a5fbf;
  --clr-secondary: #00d4aa;
  --clr-purple: #8b5cf6;
  --clr-gold: #f59e0b;
  --clr-gold-hover: #f7b731;
  --clr-gold-active: #d48a00;
  --clr-bg: #0b1124;
  --clr-bg-alt: #162044;
  --clr-bg-footer: #060a16;
  --clr-text: #ffffff;
  --clr-text-secondary: #e0e8ff;
  --clr-text-body: #b0b8d0;
  --clr-text-muted: #7a82a0;
  --clr-text-disabled: #4a5270;
  --clr-border: rgba(255,255,255,0.08);
  --clr-border-light: rgba(255,255,255,0.06);
  --glass-bg: rgba(255,255,255,0.05);
  --glass-border: rgba(255,255,255,0.08);
  --glass-blur: 24px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-input: 10px;
  --shadow-card: 0 8px 32px rgba(0,0,0,0.3);
  --shadow-card-hover: 0 12px 48px rgba(0,0,0,0.4);
  --shadow-primary: 0 0 30px rgba(45,127,249,0.3);
  --shadow-gold: 0 0 40px rgba(245,158,11,0.35);
  --transition: 0.25s ease;
  --font-sans: 'PingFang SC','Microsoft YaHei','Noto Sans SC',sans-serif;
  --font-num: 'Inter','Roboto',sans-serif;
  --max-width: 1280px;
  --gap-section: 80px;
  --gap-section-mobile: 48px;
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font-sans);background:var(--clr-bg);color:var(--clr-text-body);font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:var(--clr-text);text-decoration:none;transition:color var(--transition)}
a:hover{color:var(--clr-primary)}
img{max-width:100%;height:auto;display:block}
ul,ol{list-style:none}
button,input,select,textarea{font-family:inherit;font-size:inherit;outline:none;border:none;background:transparent;color:inherit}
.container{width:100%;max-width:var(--max-width);margin:0 auto;padding-left:20px;padding-right:20px}
@media(max-width:767px){.container{padding-left:16px;padding-right:16px}}

/* header */
#header{position:fixed;top:0;left:0;width:100%;height:72px;z-index:1000;background:rgba(11,17,36,0.85);backdrop-filter:blur(var(--glass-blur));-webkit-backdrop-filter:blur(var(--glass-blur));border-bottom:1px solid var(--clr-border);transition:background var(--transition)}
.nav-inner{max-width:var(--max-width);margin:0 auto;padding:0 20px;height:72px;display:flex;align-items:center;justify-content:space-between;position:relative}
.nav-left,.nav-right{display:flex;align-items:center;gap:32px}
.nav-left a,.nav-right a{font-size:15px;font-weight:500;color:var(--clr-text-body);position:relative;padding-bottom:4px;transition:color var(--transition)}
.nav-left a:hover,.nav-right a:hover{color:var(--clr-primary)}
.nav-left a.active,.nav-right a.active{color:var(--clr-primary)}
.nav-left a.active::after,.nav-right a.active::after{content:'';position:absolute;bottom:-2px;left:0;width:100%;height:3px;background:var(--clr-primary);border-radius:2px}
.nav-logo{position:absolute;left:50%;transform:translateX(-50%);display:flex;align-items:center;gap:10px;font-size:22px;font-weight:700;color:var(--clr-text);letter-spacing:-0.3px}
.nav-logo i{font-size:26px;color:var(--clr-primary)}
.nav-logo span{white-space:nowrap}
.nav-logo:hover{color:var(--clr-text)}
.nav-logo:hover i{color:var(--clr-primary-hover)}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:transparent;border:none;cursor:pointer;padding:8px;border-radius:var(--radius-md);transition:background var(--transition)}
.nav-toggle span{display:block;width:24px;height:2px;background:var(--clr-text);border-radius:2px;transition:all 0.3s ease}
.nav-toggle.active span:nth-child(1){transform:rotate(45deg) translate(5px,5px)}
.nav-toggle.active span:nth-child(2){opacity:0}
.nav-toggle.active span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px)}
@media(max-width:1023px){
  .nav-left,.nav-right{display:none}
  .nav-toggle{display:flex}
  .nav-logo{position:static;transform:none;margin:0 auto}
  .nav-inner{justify-content:space-between}
  .mobile-menu{position:fixed;top:72px;left:0;width:100%;height:calc(100vh - 72px);background:rgba(11,17,36,0.97);backdrop-filter:blur(40px);-webkit-backdrop-filter:blur(40px);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:32px;z-index:999;opacity:0;pointer-events:none;transition:opacity 0.4s ease}
  .mobile-menu.open{opacity:1;pointer-events:all}
  .mobile-menu a{font-size:24px;font-weight:500;color:var(--clr-text-body);padding:8px 0}
  .mobile-menu a.active{color:var(--clr-primary)}
}
@media(min-width:1024px){.mobile-menu{display:none!important}}

/* hero */
.hero-cat{position:relative;padding:160px 0 100px;background:linear-gradient(135deg,var(--clr-bg) 0%,var(--clr-bg-alt) 60%,#0f1a3a 100%);overflow:hidden}
.hero-cat::before{content:'';position:absolute;top:-200px;right:-200px;width:500px;height:500px;background:radial-gradient(circle,rgba(45,127,249,0.15),transparent 70%);pointer-events:none}
.hero-cat::after{content:'';position:absolute;bottom:-150px;left:-150px;width:400px;height:400px;background:radial-gradient(circle,rgba(0,212,170,0.1),transparent 70%);pointer-events:none}
.hero-cat .container{position:relative;z-index:2}
.hero-cat-grid{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.hero-cat-text h1{font-size:48px;font-weight:700;line-height:1.15;letter-spacing:-0.02em;color:var(--clr-text);margin-bottom:20px}
.hero-cat-text h1 i{color:var(--clr-gold)}
.hero-cat-text p{font-size:18px;line-height:1.7;color:var(--clr-text-secondary);margin-bottom:32px;max-width:540px}
.hero-cat-btns{display:flex;gap:16px;flex-wrap:wrap}
.hero-cat-img{border-radius:var(--radius-xl);overflow:hidden;box-shadow:0 0 40px rgba(45,127,249,0.2);border:1px solid var(--clr-border)}
.hero-cat-img img{width:100%;height:auto;display:block}
@media(max-width:1023px){
  .hero-cat-grid{grid-template-columns:1fr;gap:40px;text-align:center}
  .hero-cat-text p{margin-left:auto;margin-right:auto}
  .hero-cat-btns{justify-content:center}
  .hero-cat-img{max-width:500px;margin:0 auto}
  .hero-cat h1{font-size:36px}
}
@media(max-width:767px){
  .hero-cat{padding:120px 0 60px}
  .hero-cat h1{font-size:30px}
  .hero-cat-text p{font-size:16px}
}

/* section */
.section{padding:var(--gap-section) 0}
.section-alt{background:linear-gradient(180deg,rgba(22,32,68,0.4),transparent)}
.section-header{text-align:center;margin-bottom:56px}
.section-header h2{font-size:36px;font-weight:600;line-height:1.25;letter-spacing:-0.01em;color:var(--clr-text);margin-bottom:12px}
.section-header p{font-size:16px;color:var(--clr-text-muted);max-width:640px;margin:0 auto}
@media(max-width:767px){
  .section{padding:var(--gap-section-mobile) 0}
  .section-header h2{font-size:26px}
  .section-header{margin-bottom:36px}
}

/* feature cards */
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.feature-card{background:var(--glass-bg);border:1px solid var(--glass-border);backdrop-filter:blur(var(--glass-blur));-webkit-backdrop-filter:blur(var(--glass-blur));border-radius:var(--radius-xl);padding:32px;transition:all var(--transition);position:relative;overflow:hidden}
.feature-card::before{content:'';position:absolute;top:0;left:0;width:100%;height:3px;background:linear-gradient(90deg,var(--clr-primary),var(--clr-secondary));opacity:0;transition:opacity var(--transition)}
.feature-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-card-hover),0 0 30px rgba(45,127,249,0.15);border-color:rgba(45,127,249,0.25)}
.feature-card:hover::before{opacity:1}
.feature-icon{width:56px;height:56px;border-radius:50%;background:rgba(45,127,249,0.15);display:flex;align-items:center;justify-content:center;margin-bottom:20px;font-size:24px;color:var(--clr-primary);transition:all var(--transition)}
.feature-card:hover .feature-icon{background:rgba(45,127,249,0.25);box-shadow:0 0 20px rgba(45,127,249,0.2)}
.feature-card h3{font-size:20px;font-weight:600;color:var(--clr-text);margin-bottom:10px}
.feature-card p{font-size:14px;line-height:1.7;color:var(--clr-text-body);margin-bottom:16px}
.feature-card .feature-link{font-size:14px;color:var(--clr-primary);display:inline-flex;align-items:center;gap:6px;transition:all var(--transition)}
.feature-card .feature-link i{transition:transform var(--transition)}
.feature-card .feature-link:hover i{transform:translateX(4px)}
@media(max-width:1023px){.feature-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:767px){.feature-grid{grid-template-columns:1fr}}

/* scenario */
.scenario-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.scenario-card{background:rgba(255,255,255,0.02);border:1px solid var(--clr-border-light);border-radius:var(--radius-lg);padding:28px 24px;transition:all var(--transition);text-align:center}
.scenario-card:hover{background:rgba(45,127,249,0.05);border-color:rgba(45,127,249,0.2);transform:translateY(-4px)}
.scenario-card i{font-size:36px;color:var(--clr-primary);margin-bottom:16px;display:block}
.scenario-card h4{font-size:18px;font-weight:600;color:var(--clr-text);margin-bottom:8px}
.scenario-card p{font-size:14px;color:var(--clr-text-body);line-height:1.7}
@media(max-width:1023px){.scenario-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:767px){.scenario-grid{grid-template-columns:1fr}}

/* process */
.process-steps{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;counter-reset:step}
.process-step{flex:1;min-width:200px;max-width:280px;background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:var(--radius-lg);padding:28px 20px;text-align:center;position:relative;transition:all var(--transition)}
.process-step::before{counter-increment:step;content:counter(step);position:absolute;top:-12px;left:50%;transform:translateX(-50%);width:28px;height:28px;border-radius:50%;background:var(--clr-primary);color:#fff;font-size:14px;font-weight:700;display:flex;align-items:center;justify-content:center;box-shadow:0 0 16px rgba(45,127,249,0.3)}
.process-step:hover{transform:translateY(-6px);box-shadow:var(--shadow-card)}
.process-step i{font-size:32px;color:var(--clr-gold);margin-bottom:12px;margin-top:8px;display:block}
.process-step h4{font-size:16px;font-weight:600;color:var(--clr-text);margin-bottom:8px}
.process-step p{font-size:13px;color:var(--clr-text-body);line-height:1.6}
@media(max-width:767px){.process-steps{flex-direction:column;align-items:center}.process-step{max-width:100%;width:100%}}

/* faq */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--clr-border-light);overflow:hidden}
.faq-question{display:flex;align-items:center;gap:12px;padding:18px 20px;cursor:pointer;transition:background var(--transition);border-radius:var(--radius-md);user-select:none}
.faq-question:hover{background:rgba(255,255,255,0.03)}
.faq-q-icon{width:24px;height:24px;border-radius:50%;background:rgba(45,127,249,0.15);display:flex;align-items:center;justify-content:center;font-size:12px;color:var(--clr-primary);flex-shrink:0}
.faq-question span{font-size:16px;color:var(--clr-text);font-weight:500;flex:1}
.faq-arrow{font-size:14px;color:var(--clr-text-muted);transition:transform 0.3s ease}
.faq-item.open .faq-arrow{transform:rotate(180deg)}
.faq-item.open .faq-question{border-left:3px solid var(--clr-primary);border-radius:0 var(--radius-md) var(--radius-md) 0}
.faq-answer{padding:0 20px 20px 20px;font-size:14px;line-height:1.8;color:var(--clr-text-body);max-height:0;overflow:hidden;transition:max-height 0.4s ease,padding 0.4s ease}
.faq-item.open .faq-answer{max-height:400px;padding:0 20px 20px 20px}

/* cta */
.cta-section{background:linear-gradient(135deg,#0b1124,#162044);border-top:2px solid rgba(45,127,249,0.15);border-bottom:2px solid rgba(245,158,11,0.15);padding:80px 0}
.cta-inner{text-align:center;max-width:700px;margin:0 auto}
.cta-inner h2{font-size:36px;font-weight:600;color:var(--clr-text);margin-bottom:16px}
.cta-inner p{font-size:16px;color:var(--clr-text-secondary);margin-bottom:32px}
.cta-btns{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 28px;border-radius:var(--radius-md);font-size:16px;font-weight:600;cursor:pointer;transition:all var(--transition);border:none;white-space:nowrap}
.btn-primary{background:var(--clr-primary);color:#fff}
.btn-primary:hover{background:var(--clr-primary-hover);box-shadow:0 0 20px rgba(45,127,249,0.35);color:#fff}
.btn-primary:active{background:var(--clr-primary-active)}
.btn-secondary{background:transparent;color:var(--clr-text);border:1px solid var(--clr-border)}
.btn-secondary:hover{background:rgba(45,127,249,0.1);border-color:var(--clr-primary);color:var(--clr-primary)}
.btn-gold{background:var(--clr-gold);color:#fff;box-shadow:0 0 20px rgba(245,158,11,0.2)}
.btn-gold:hover{background:var(--clr-gold-hover);box-shadow:0 0 40px rgba(245,158,11,0.35);color:#fff;transform:translateY(-2px)}
.btn-gold:active{background:var(--clr-gold-active);transform:translateY(0)}
.btn-lg{height:52px;padding:0 36px;font-size:18px}
.btn-outline-primary{background:transparent;color:var(--clr-primary);border:1px solid var(--clr-primary)}
.btn-outline-primary:hover{background:rgba(45,127,249,0.1);color:var(--clr-primary-hover);box-shadow:0 0 16px rgba(45,127,249,0.2)}
@media(max-width:767px){
  .cta-section{padding:48px 0}
  .cta-inner h2{font-size:26px}
}

/* related categories */
.related-cats{margin-top:56px}
.related-cats h3{font-size:22px;font-weight:600;color:var(--clr-text);margin-bottom:24px;text-align:center}
.related-cats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.related-cat-card{background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:var(--radius-lg);padding:20px;text-align:center;transition:all var(--transition)}
.related-cat-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-card);border-color:rgba(45,127,249,0.2)}
.related-cat-card i{font-size:28px;color:var(--clr-primary);margin-bottom:8px;display:block}
.related-cat-card span{font-size:15px;font-weight:500;color:var(--clr-text)}
@media(max-width:1023px){.related-cats-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:767px){.related-cats-grid{grid-template-columns:1fr}}

/* footer */
footer{background:var(--clr-bg-footer);border-top:1px solid var(--clr-border-light);padding:60px 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand p{font-size:14px;color:var(--clr-text-muted);line-height:1.7;margin-bottom:16px}
.footer-social{display:flex;gap:12px}
.footer-social a{width:36px;height:36px;border-radius:50%;background:rgba(255,255,255,0.05);display:flex;align-items:center;justify-content:center;color:var(--clr-text-muted);font-size:18px;transition:all var(--transition)}
.footer-social a:hover{background:var(--clr-primary);color:#fff}
.footer-col h4{font-size:16px;font-weight:600;color:var(--clr-text);margin-bottom:16px}
.footer-col ul li{margin-bottom:8px}
.footer-col ul li a{font-size:14px;color:var(--clr-text-muted);transition:color var(--transition);display:inline-block}
.footer-col ul li a:hover{color:var(--clr-primary)}
.footer-contact li{font-size:14px;color:var(--clr-text-body);display:flex;align-items:center;gap:8px;padding:4px 0}
.footer-contact li i{color:var(--clr-primary);width:16px;font-size:14px}
.footer-bottom{border-top:1px solid var(--clr-border-light);padding:16px 0;margin-top:40px;text-align:center;font-size:12px;color:var(--clr-text-disabled)}
@media(max-width:1023px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:767px){.footer-grid{grid-template-columns:1fr}.footer-brand .nav-logo{justify-content:flex-start}}

/* mobile menu overlay */
.mobile-menu a{font-size:22px;font-weight:500;color:var(--clr-text-body);padding:10px 0;transition:color var(--transition)}
.mobile-menu a:hover,.mobile-menu a.active{color:var(--clr-primary)}
.mobile-menu .btn-gold{font-size:18px;padding:12px 40px;height:auto;margin-top:16px}

/* responsive extras */
@media(max-width:767px){
  .hero-cat h1{font-size:28px}
  .hero-cat-text p{font-size:15px}
  .section-header h2{font-size:24px}
  .feature-card{padding:24px}
  .process-step{padding:24px 16px}
  .faq-question{padding:14px 16px}
  .faq-question span{font-size:15px}
  .btn-lg{height:48px;padding:0 28px;font-size:16px}
}

/* roulang page: category2 */
/* ===== Design Variables ===== */
        :root {
            --clr-primary: #2d7ff9;
            --clr-primary-light: #4a9fff;
            --clr-primary-dark: #1a5fbf;
            --clr-secondary: #00d4aa;
            --clr-accent: #8b5cf6;
            --clr-gold: #f59e0b;
            --clr-gold-light: #f7b731;
            --clr-gold-dark: #d48a00;
            --clr-bg: #0b1124;
            --clr-bg-light: #162044;
            --clr-bg-card: rgba(255, 255, 255, 0.05);
            --clr-border: rgba(255, 255, 255, 0.08);
            --clr-text: #ffffff;
            --clr-text-secondary: #e0e8ff;
            --clr-text-body: #b0b8d0;
            --clr-text-muted: #7a82a0;
            --clr-text-disabled: #4a5270;
            --radius-sm: 4px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --radius-xl: 16px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.3);
            --shadow-hover: 0 12px 48px rgba(0, 0, 0, 0.4);
            --shadow-glow-primary: 0 0 30px rgba(45, 127, 249, 0.3);
            --shadow-glow-gold: 0 0 40px rgba(245, 158, 11, 0.35);
            --glass-bg: rgba(255, 255, 255, 0.05);
            --glass-border: rgba(255, 255, 255, 0.08);
            --glass-blur: 24px;
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --font-num: 'Inter', 'Roboto', sans-serif;
            --max-width: 1280px;
            --header-height: 72px;
            --space-section: 80px;
            --space-section-mobile: 48px;
        }

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

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

        body {
            font-family: var(--font-sans);
            background: var(--clr-bg);
            color: var(--clr-text-body);
            font-size: 16px;
            line-height: 1.6;
            min-height: 100vh;
            background-image: radial-gradient(ellipse at 20% 50%, rgba(45, 127, 249, 0.06) 0%, transparent 60%),
                radial-gradient(ellipse at 80% 20%, rgba(139, 92, 246, 0.04) 0%, transparent 50%),
                radial-gradient(ellipse at 50% 80%, rgba(0, 212, 170, 0.03) 0%, transparent 50%);
            background-attachment: fixed;
        }

        a {
            color: var(--clr-primary);
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: var(--clr-primary-light);
        }
        a:focus-visible {
            outline: 2px solid var(--clr-primary);
            outline-offset: 2px;
            border-radius: var(--radius-sm);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-lg);
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            background: none;
            color: inherit;
        }

        button {
            cursor: pointer;
        }

        ul,
        ol {
            list-style: none;
            padding: 0;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--clr-text);
            font-weight: 600;
            line-height: 1.25;
        }

        /* ===== Container ===== */
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }

        @media (max-width: 767px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== Header & Navigation ===== */
        #header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            background: rgba(11, 17, 36, 0.85);
            backdrop-filter: blur(var(--glass-blur));
            -webkit-backdrop-filter: blur(var(--glass-blur));
            border-bottom: 1px solid var(--glass-border);
            transition: background 0.3s ease, box-shadow 0.3s ease;
        }

        #header.scrolled {
            background: rgba(11, 17, 36, 0.95);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
        }

        .nav-inner {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
            height: var(--header-height);
            display: flex;
            align-items: center;
            justify-content: space-between;
            position: relative;
        }

        .nav-left,
        .nav-right {
            display: flex;
            align-items: center;
            gap: 32px;
        }

        .nav-left a,
        .nav-right a {
            color: var(--clr-text-body);
            font-size: 15px;
            font-weight: 500;
            transition: color 0.2s ease, transform 0.2s ease;
            position: relative;
            padding-bottom: 4px;
        }

        .nav-left a::after,
        .nav-right a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 3px;
            background: var(--clr-primary);
            border-radius: 2px;
            transition: width 0.25s ease;
        }

        .nav-left a:hover::after,
        .nav-right a:hover::after,
        .nav-left a.active::after,
        .nav-right a.active::after {
            width: 100%;
        }

        .nav-left a:hover,
        .nav-right a:hover {
            color: var(--clr-primary);
            transform: translateY(-1px);
        }

        .nav-left a.active,
        .nav-right a.active {
            color: var(--clr-primary);
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: var(--clr-text) !important;
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
            text-decoration: none;
            letter-spacing: -0.02em;
        }

        .nav-logo i {
            color: var(--clr-gold);
            font-size: 26px;
            filter: drop-shadow(0 0 8px rgba(245, 158, 11, 0.3));
        }

        .nav-logo span {
            background: linear-gradient(135deg, #ffffff 0%, #e0e8ff 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            width: 44px;
            height: 44px;
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-md);
            gap: 5px;
            padding: 10px;
            transition: background 0.2s;
        }

        .nav-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--clr-text);
            border-radius: 2px;
            transition: transform 0.3s ease, opacity 0.3s ease;
        }

        .nav-toggle.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .nav-toggle.active span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        @media (max-width: 1023px) {
            .nav-left,
            .nav-right {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
            .nav-logo {
                position: static;
                transform: none;
                font-size: 20px;
            }
            .nav-inner {
                justify-content: space-between;
            }
            .nav-mobile-open .nav-left,
            .nav-mobile-open .nav-right {
                display: flex;
                flex-direction: column;
                align-items: center;
                gap: 24px;
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                bottom: 0;
                background: rgba(11, 17, 36, 0.98);
                backdrop-filter: blur(40px);
                -webkit-backdrop-filter: blur(40px);
                justify-content: center;
                z-index: 999;
                padding: 40px 20px;
            }
            .nav-mobile-open .nav-left a,
            .nav-mobile-open .nav-right a {
                font-size: 22px;
                color: var(--clr-text-secondary);
            }
            .nav-mobile-open .nav-left a::after,
            .nav-mobile-open .nav-right a::after {
                bottom: -4px;
                height: 3px;
            }
            .nav-mobile-open .nav-left {
                top: var(--header-height);
                padding-top: 40px;
            }
            .nav-mobile-open .nav-right {
                top: auto;
                bottom: 80px;
                padding-bottom: 40px;
            }
            .nav-mobile-open .nav-left a.active,
            .nav-mobile-open .nav-right a.active {
                color: var(--clr-primary);
            }
        }

        @media (max-width: 767px) {
            .nav-logo {
                font-size: 18px;
                gap: 8px;
            }
            .nav-logo i {
                font-size: 22px;
            }
            .nav-inner {
                padding: 0 16px;
            }
        }

        /* ===== Main Content ===== */
        main {
            padding-top: var(--header-height);
        }

        /* ===== Hero Banner (分类页) ===== */
        .category-hero {
            position: relative;
            padding: 100px 0 80px;
            text-align: center;
            background: linear-gradient(135deg, var(--clr-bg) 0%, var(--clr-bg-light) 100%);
            overflow: hidden;
            min-height: 360px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
            opacity: 0.12;
            z-index: 0;
        }

        .category-hero::after {
            content: '';
            position: absolute;
            top: -40%;
            right: -20%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(45, 127, 249, 0.15) 0%, transparent 70%);
            z-index: 1;
            pointer-events: none;
        }

        .category-hero .hero-content {
            position: relative;
            z-index: 2;
            max-width: 800px;
            padding: 0 20px;
        }

        .category-hero h1 {
            font-size: 42px;
            font-weight: 700;
            color: var(--clr-text);
            margin-bottom: 20px;
            letter-spacing: -0.02em;
        }

        .category-hero h1 i {
            color: var(--clr-gold);
            margin-right: 12px;
            filter: drop-shadow(0 0 12px rgba(245, 158, 11, 0.25));
        }

        .category-hero .hero-sub {
            font-size: 18px;
            color: var(--clr-text-secondary);
            line-height: 1.7;
            max-width: 640px;
            margin: 0 auto 32px;
        }

        .category-hero .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: 50px;
            padding: 8px 24px;
            font-size: 14px;
            color: var(--clr-text-muted);
            backdrop-filter: blur(12px);
            margin-bottom: 20px;
        }

        .category-hero .hero-badge i {
            color: var(--clr-secondary);
        }

        @media (max-width: 767px) {
            .category-hero {
                padding: 80px 0 56px;
                min-height: 280px;
            }
            .category-hero h1 {
                font-size: 30px;
            }
            .category-hero .hero-sub {
                font-size: 16px;
            }
        }

        /* ===== Section通用 ===== */
        .section {
            padding: var(--space-section) 0;
        }

        .section-header {
            text-align: center;
            margin-bottom: 56px;
        }

        .section-header h2 {
            font-size: 34px;
            font-weight: 700;
            color: var(--clr-text);
            margin-bottom: 16px;
            letter-spacing: -0.01em;
        }

        .section-header h2 i {
            color: var(--clr-primary);
            margin-right: 10px;
        }

        .section-header p {
            font-size: 16px;
            color: var(--clr-text-muted);
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.7;
        }

        @media (max-width: 767px) {
            .section {
                padding: var(--space-section-mobile) 0;
            }
            .section-header h2 {
                font-size: 26px;
            }
            .section-header {
                margin-bottom: 36px;
            }
        }

        /* ===== 公告时间线 ===== */
        .timeline {
            position: relative;
            max-width: 900px;
            margin: 0 auto;
            padding: 0 20px;
        }

        .timeline::before {
            content: '';
            position: absolute;
            top: 0;
            bottom: 0;
            left: 28px;
            width: 2px;
            background: linear-gradient(to bottom, var(--clr-primary), var(--clr-accent), transparent);
            opacity: 0.3;
        }

        .timeline-item {
            position: relative;
            padding-left: 72px;
            padding-bottom: 48px;
        }

        .timeline-item:last-child {
            padding-bottom: 0;
        }

        .timeline-item::before {
            content: '';
            position: absolute;
            left: 20px;
            top: 6px;
            width: 18px;
            height: 18px;
            border-radius: 50%;
            background: var(--clr-primary);
            border: 4px solid var(--clr-bg);
            box-shadow: 0 0 0 3px rgba(45, 127, 249, 0.25), var(--shadow-glow-primary);
            z-index: 1;
        }

        .timeline-item .tl-date {
            font-size: 13px;
            color: var(--clr-text-muted);
            font-weight: 500;
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .timeline-item .tl-date i {
            color: var(--clr-secondary);
            font-size: 14px;
        }

        .timeline-item .tl-card {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-lg);
            padding: 28px 32px;
            backdrop-filter: blur(12px);
            transition: border-color 0.3s ease, box-shadow 0.3s ease;
        }

        .timeline-item .tl-card:hover {
            border-color: rgba(45, 127, 249, 0.2);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.25);
        }

        .timeline-item .tl-card h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--clr-text);
            margin-bottom: 12px;
        }

        .timeline-item .tl-card h3 i {
            color: var(--clr-gold);
            margin-right: 8px;
            font-size: 18px;
        }

        .timeline-item .tl-card p {
            font-size: 15px;
            color: var(--clr-text-body);
            line-height: 1.8;
            margin-bottom: 12px;
        }

        .timeline-item .tl-card .tl-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 12px;
        }

        .timeline-item .tl-card .tl-tags span {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 12px;
            font-weight: 500;
            background: rgba(45, 127, 249, 0.12);
            color: var(--clr-primary-light);
            border: 1px solid rgba(45, 127, 249, 0.08);
        }

        .timeline-item .tl-card .tl-tags .tag-new {
            background: rgba(245, 158, 11, 0.12);
            color: var(--clr-gold);
            border-color: rgba(245, 158, 11, 0.15);
        }

        .timeline-item .tl-card .tl-tags .tag-hot {
            background: rgba(0, 212, 170, 0.12);
            color: var(--clr-secondary);
            border-color: rgba(0, 212, 170, 0.15);
        }

        @media (max-width: 767px) {
            .timeline {
                padding: 0 12px;
            }
            .timeline::before {
                left: 18px;
            }
            .timeline-item {
                padding-left: 52px;
                padding-bottom: 36px;
            }
            .timeline-item::before {
                left: 11px;
                width: 14px;
                height: 14px;
            }
            .timeline-item .tl-card {
                padding: 20px;
            }
            .timeline-item .tl-card h3 {
                font-size: 18px;
            }
            .timeline-item .tl-card p {
                font-size: 14px;
            }
        }

        /* ===== 服务升级亮点 (玻璃拟态卡片网格) ===== */
        .upgrade-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
            margin-top: 20px;
        }

        .upgrade-card {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-xl);
            padding: 32px 28px;
            backdrop-filter: blur(16px);
            transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
            text-align: center;
        }

        .upgrade-card:hover {
            transform: translateY(-6px);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3), 0 0 30px rgba(45, 127, 249, 0.08);
            border-color: rgba(45, 127, 249, 0.2);
        }

        .upgrade-card .uc-icon {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: rgba(45, 127, 249, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            font-size: 28px;
            color: var(--clr-primary);
            transition: background 0.3s ease, transform 0.3s ease;
        }

        .upgrade-card:hover .uc-icon {
            background: rgba(45, 127, 249, 0.22);
            transform: scale(1.05);
        }

        .upgrade-card h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--clr-text);
            margin-bottom: 12px;
        }

        .upgrade-card p {
            font-size: 14px;
            color: var(--clr-text-body);
            line-height: 1.7;
        }

        .upgrade-card .uc-version {
            display: inline-block;
            margin-top: 16px;
            padding: 4px 16px;
            border-radius: 50px;
            font-size: 12px;
            font-weight: 500;
            background: rgba(0, 212, 170, 0.1);
            color: var(--clr-secondary);
            border: 1px solid rgba(0, 212, 170, 0.12);
        }

        @media (max-width: 1023px) {
            .upgrade-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
        }

        @media (max-width: 767px) {
            .upgrade-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .upgrade-card {
                padding: 24px 20px;
            }
            .upgrade-card h3 {
                font-size: 18px;
            }
        }

        /* ===== 数据统计看板 ===== */
        .stats-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 20px;
        }

        .stat-card {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-xl);
            padding: 28px 20px;
            backdrop-filter: blur(16px);
            text-align: center;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }

        .stat-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.25);
        }

        .stat-card .stat-number {
            font-family: var(--font-num);
            font-size: 36px;
            font-weight: 700;
            color: var(--clr-secondary);
            text-shadow: 0 0 30px rgba(0, 212, 170, 0.2);
            margin-bottom: 8px;
        }

        .stat-card .stat-number.gold {
            color: var(--clr-gold);
            text-shadow: 0 0 30px rgba(245, 158, 11, 0.2);
        }

        .stat-card .stat-label {
            font-size: 14px;
            color: var(--clr-text);
            font-weight: 500;
            margin-bottom: 6px;
        }

        .stat-card .stat-trend {
            font-size: 12px;
            color: var(--clr-text-muted);
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 4px;
        }

        .stat-card .stat-trend i {
            font-size: 13px;
        }

        .stat-card .stat-trend.up {
            color: var(--clr-secondary);
        }

        .stat-card .stat-trend.down {
            color: #f87171;
        }

        @media (max-width: 1023px) {
            .stats-row {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
        }

        @media (max-width: 767px) {
            .stats-row {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .stat-card .stat-number {
                font-size: 28px;
            }
            .stat-card {
                padding: 20px 16px;
            }
        }

        /* ===== 公告分类标签 ===== */
        .category-tabs {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 12px;
            margin-bottom: 48px;
        }

        .category-tabs a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 24px;
            border-radius: 50px;
            font-size: 14px;
            font-weight: 500;
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            color: var(--clr-text-body);
            transition: background 0.3s ease, color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
        }

        .category-tabs a:hover,
        .category-tabs a.active {
            background: rgba(45, 127, 249, 0.15);
            border-color: rgba(45, 127, 249, 0.3);
            color: var(--clr-primary-light);
            box-shadow: 0 0 20px rgba(45, 127, 249, 0.08);
        }

        .category-tabs a i {
            font-size: 16px;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .faq-item:last-child {
            border-bottom: none;
        }

        .faq-question {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 18px 20px;
            cursor: pointer;
            border-radius: var(--radius-md);
            transition: background 0.2s ease;
            user-select: none;
        }

        .faq-question:hover {
            background: rgba(255, 255, 255, 0.03);
        }

        .faq-question .q-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(45, 127, 249, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            color: var(--clr-primary);
            flex-shrink: 0;
        }

        .faq-question .q-text {
            font-size: 16px;
            font-weight: 500;
            color: var(--clr-text);
            flex: 1;
        }

        .faq-question .q-arrow {
            font-size: 16px;
            color: var(--clr-text-muted);
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }

        .faq-item.active .q-arrow {
            transform: rotate(180deg);
        }

        .faq-item.active .faq-question .q-icon {
            background: rgba(45, 127, 249, 0.2);
        }

        .faq-item.active .faq-question {
            border-left: 3px solid var(--clr-primary);
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 20px 0 62px;
        }

        .faq-item.active .faq-answer {
            max-height: 400px;
            padding: 0 20px 24px 62px;
        }

        .faq-answer p {
            font-size: 14px;
            color: var(--clr-text-body);
            line-height: 1.8;
        }

        @media (max-width: 767px) {
            .faq-question {
                padding: 14px 12px;
            }
            .faq-question .q-text {
                font-size: 15px;
            }
            .faq-answer {
                padding: 0 12px 0 50px;
            }
            .faq-item.active .faq-answer {
                padding: 0 12px 18px 50px;
            }
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--clr-bg) 0%, var(--clr-bg-light) 100%);
            border-top: 1px solid rgba(45, 127, 249, 0.08);
            border-bottom: 1px solid rgba(45, 127, 249, 0.08);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -30%;
            left: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(245, 158, 11, 0.06) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -30%;
            right: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(45, 127, 249, 0.06) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-inner {
            position: relative;
            z-index: 1;
            text-align: center;
            padding: 64px 20px;
        }

        .cta-inner h2 {
            font-size: 34px;
            font-weight: 700;
            color: var(--clr-text);
            margin-bottom: 16px;
        }

        .cta-inner h2 i {
            color: var(--clr-gold);
            margin-right: 10px;
        }

        .cta-inner p {
            font-size: 16px;
            color: var(--clr-text-secondary);
            max-width: 560px;
            margin: 0 auto 32px;
            line-height: 1.7;
        }

        .cta-inner .cta-buttons {
            display: flex;
            justify-content: center;
            gap: 20px;
            flex-wrap: wrap;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 0 32px;
            height: 48px;
            border-radius: var(--radius-md);
            font-size: 16px;
            font-weight: 600;
            transition: all 0.25s ease;
            text-decoration: none;
            border: none;
        }

        .btn-primary {
            background: var(--clr-primary);
            color: var(--clr-text);
            box-shadow: 0 4px 20px rgba(45, 127, 249, 0.25);
        }

        .btn-primary:hover {
            background: var(--clr-primary-light);
            box-shadow: 0 6px 30px rgba(45, 127, 249, 0.35);
            transform: translateY(-2px);
            color: var(--clr-text);
        }

        .btn-primary:active {
            background: var(--clr-primary-dark);
            transform: translateY(0);
            box-shadow: inset 0 2px 8px rgba(0, 0, 0, 0.2);
        }

        .btn-gold {
            background: var(--clr-gold);
            color: var(--clr-text);
            box-shadow: 0 4px 24px rgba(245, 158, 11, 0.3);
            animation: pulse-glow 2.5s ease-in-out infinite;
        }

        .btn-gold:hover {
            background: var(--clr-gold-light);
            box-shadow: 0 6px 40px rgba(245, 158, 11, 0.4);
            transform: translateY(-2px);
            color: var(--clr-text);
        }

        .btn-gold:active {
            background: var(--clr-gold-dark);
            transform: translateY(1px);
            box-shadow: inset 0 2px 8px rgba(0, 0, 0, 0.2);
            animation: none;
        }

        .btn-outline {
            background: transparent;
            color: var(--clr-text);
            border: 1.5px solid var(--clr-border);
        }

        .btn-outline:hover {
            border-color: var(--clr-primary);
            background: rgba(45, 127, 249, 0.08);
            transform: translateY(-2px);
            color: var(--clr-primary-light);
        }

        @keyframes pulse-glow {
            0%,
            100% {
                box-shadow: 0 4px 24px rgba(245, 158, 11, 0.3);
            }
            50% {
                box-shadow: 0 4px 40px rgba(245, 158, 11, 0.5);
            }
        }

        @media (max-width: 767px) {
            .cta-inner {
                padding: 48px 16px;
            }
            .cta-inner h2 {
                font-size: 26px;
            }
            .cta-inner p {
                font-size: 15px;
            }
            .btn {
                width: 100%;
                justify-content: center;
                height: 52px;
                font-size: 17px;
            }
            .cta-inner .cta-buttons {
                flex-direction: column;
                gap: 12px;
            }
        }

        /* ===== Footer ===== */
        footer {
            background: #060a16;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding-top: 60px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 40px;
        }

        .footer-brand .nav-logo {
            position: static;
            transform: none;
            justify-content: flex-start;
            margin-bottom: 12px;
            font-size: 20px;
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--clr-text-muted);
            line-height: 1.7;
            margin-bottom: 20px;
            max-width: 320px;
        }

        .footer-social {
            display: flex;
            gap: 16px;
        }

        .footer-social a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.05);
            color: var(--clr-text-muted);
            font-size: 18px;
            transition: background 0.3s ease, color 0.3s ease, transform 0.2s ease;
        }

        .footer-social a:hover {
            background: rgba(45, 127, 249, 0.15);
            color: var(--clr-primary-light);
            transform: translateY(-3px);
        }

        .footer-col h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--clr-text);
            margin-bottom: 20px;
        }

        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .footer-col ul li a {
            font-size: 14px;
            color: var(--clr-text-muted);
            transition: color 0.2s ease, padding-left 0.2s ease;
        }

        .footer-col ul li a:hover {
            color: var(--clr-primary-light);
            padding-left: 4px;
        }

        .footer-contact li {
            font-size: 14px;
            color: var(--clr-text-body);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .footer-contact li i {
            width: 20px;
            color: var(--clr-primary);
            font-size: 15px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding: 20px 0;
            text-align: center;
            font-size: 13px;
            color: var(--clr-text-disabled);
        }

        @media (max-width: 1023px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
            .footer-brand p {
                max-width: 100%;
            }
        }

        @media (max-width: 767px) {
            footer {
                padding-top: 40px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-col h4 {
                margin-bottom: 14px;
            }
            .footer-bottom {
                font-size: 12px;
                padding: 16px 0;
            }
        }

        /* ===== 相关分类链接 ===== */
        .related-cats {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 16px;
            margin-top: 48px;
        }

        .related-cats a {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 28px;
            border-radius: var(--radius-lg);
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            color: var(--clr-text-body);
            font-size: 15px;
            font-weight: 500;
            transition: all 0.25s ease;
            backdrop-filter: blur(8px);
        }

        .related-cats a:hover {
            border-color: rgba(45, 127, 249, 0.25);
            background: rgba(45, 127, 249, 0.08);
            color: var(--clr-primary-light);
            transform: translateY(-3px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
        }

        .related-cats a i {
            font-size: 18px;
            color: var(--clr-primary);
        }

        @media (max-width: 767px) {
            .related-cats {
                gap: 12px;
                margin-top: 32px;
            }
            .related-cats a {
                padding: 12px 20px;
                font-size: 14px;
                flex: 1 1 auto;
                justify-content: center;
            }
        }

        /* ===== 回到顶部 ===== */
        .back-to-top {
            position: fixed;
            bottom: 32px;
            right: 32px;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--clr-primary);
            color: var(--clr-text);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            box-shadow: 0 4px 20px rgba(45, 127, 249, 0.3);
            z-index: 999;
            opacity: 0;
            visibility: hidden;
            transform: translateY(20px);
            transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s ease, background 0.2s ease;
        }

        .back-to-top.visible {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }

        .back-to-top:hover {
            background: var(--clr-primary-light);
            transform: translateY(-3px);
            box-shadow: 0 6px 28px rgba(45, 127, 249, 0.4);
        }

        @media (max-width: 767px) {
            .back-to-top {
                bottom: 20px;
                right: 20px;
                width: 42px;
                height: 42px;
                font-size: 18px;
            }
        }

        /* ===== 分割线 ===== */
        .divider {
            width: 80px;
            height: 3px;
            background: linear-gradient(90deg, var(--clr-primary), var(--clr-accent));
            border-radius: 4px;
            margin: 0 auto 24px;
        }

        .divider.light {
            opacity: 0.4;
        }

        /* ===== 通用间距 ===== */
        .mt-20 {
            margin-top: 20px;
        }
        .mb-20 {
            margin-bottom: 20px;
        }
        .text-center {
            text-align: center;
        }