/* roulang page: index */
:root {
  --primary: #6C63FF;
  --primary-light: #8B83FF;
  --secondary: #00D4FF;
  --bg-dark: #0A0F1F;
  --bg-card: rgba(255,255,255,0.05);
  --bg-input: #1E2433;
  --border-card: rgba(255,255,255,0.1);
  --border-input: #2A3455;
  --text-white: #F5F7FA;
  --text-muted: #8892B0;
  --text-nav: #C0C8DF;
  --radius-card: 16px;
  --radius-btn: 10px;
  --shadow-card: 0 8px 32px rgba(0,0,0,0.3);
  --shadow-glow: 0 0 20px rgba(108,99,255,0.5);
  --font-cn: "PingFang SC","Microsoft YaHei","Helvetica Neue",sans-serif;
  --font-en: "Inter","Segoe UI",sans-serif;
  --transition: all 0.3s ease;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-cn);
  background:linear-gradient(135deg,#0A0F1F 0%,#141B2D 50%,#0A0F1F 100%);
  color:var(--text-white);
  font-size:1rem;
  line-height:1.7;
  min-height:100vh;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--primary);text-decoration:none;transition:var(--transition)}
a:hover{color:var(--secondary)}
img{max-width:100%;height:auto;border-radius:8px}
.container{max-width:1200px;padding-left:1.5rem;padding-right:1.5rem;margin:0 auto}
.row{--bs-gutter-x:1.5rem}
/* 导航 */
.navbar-custom{
  background:rgba(10,15,31,0.92);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid rgba(255,255,255,0.06);
  height:70px;
  padding:0 1.5rem;
  position:fixed;
  top:0;
  left:0;
  right:0;
  z-index:1000;
  transition:var(--transition);
}
.navbar-custom .container{height:100%;display:flex;align-items:center;justify-content:space-between}
.navbar-brand{
  display:flex;align-items:center;gap:10px;font-size:1.4rem;font-weight:700;
  background:linear-gradient(135deg,var(--primary),var(--secondary));
  -webkit-background-clip:text;
  -webkit-text-fill-color:transparent;
  background-clip:text;
  letter-spacing:-0.5px;
}
.navbar-brand i{font-size:1.3rem;background:linear-gradient(135deg,var(--primary),var(--secondary));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.nav-links{display:flex;align-items:center;gap:1.8rem;list-style:none;margin:0;padding:0}
.nav-links a{
  color:var(--text-nav);
  font-size:0.95rem;
  font-weight:500;
  position:relative;
  padding:0.25rem 0;
  transition:var(--transition);
}
.nav-links a::after{
  content:'';position:absolute;bottom:-2px;left:0;width:0;height:2px;
  background:linear-gradient(90deg,var(--primary),var(--secondary));
  transition:width 0.3s ease;border-radius:2px;
}
.nav-links a:hover,.nav-links a.active{color:var(--text-white)}
.nav-links a:hover::after,.nav-links a.active::after{width:100%}
.nav-right{display:flex;align-items:center;gap:1rem}
.search-box{
  position:relative;width:200px;
}
.search-box input{
  width:100%;background:var(--bg-input);border:1px solid var(--border-input);
  border-radius:20px;padding:0.5rem 1rem 0.5rem 2.2rem;color:var(--text-white);
  font-size:0.875rem;transition:var(--transition);outline:none;
}
.search-box input:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(108,99,255,0.2)}
.search-box input::placeholder{color:var(--text-muted)}
.search-box i{position:absolute;left:12px;top:50%;transform:translateY(-50%);color:var(--text-muted);font-size:0.85rem}
.btn-outline-nav{
  background:transparent;border:1px solid rgba(255,255,255,0.3);color:var(--text-white);
  border-radius:var(--radius-btn);padding:0.4rem 1rem;font-size:0.875rem;font-weight:500;
  transition:var(--transition);cursor:pointer;
}
.btn-outline-nav:hover{background:rgba(255,255,255,0.1);border-color:rgba(255,255,255,0.5)}
.btn-cta-nav{
  background:linear-gradient(135deg,var(--primary),var(--secondary));
  color:#fff;border:none;border-radius:var(--radius-btn);
  padding:0.45rem 1.3rem;font-size:0.875rem;font-weight:600;
  box-shadow:0 0 12px rgba(108,99,255,0.35);
  transition:var(--transition);cursor:pointer;
}
.btn-cta-nav:hover{box-shadow:0 0 25px rgba(108,99,255,0.6);transform:translateY(-1px)}
.hamburger{display:none;background:none;border:none;color:var(--text-white);font-size:1.5rem;cursor:pointer}
/* 移动端导航 */
@media(max-width:991px){
  .nav-links,.nav-right .search-box,.nav-right .btn-outline-nav,.nav-right .btn-cta-nav{display:none}
  .hamburger{display:block}
  .nav-links.mobile-open{
    display:flex;flex-direction:column;position:fixed;top:70px;left:0;right:0;
    background:rgba(10,15,31,0.98);backdrop-filter:blur(12px);
    padding:1.5rem 2rem;gap:1.2rem;align-items:stretch;border-bottom:1px solid rgba(255,255,255,0.06);
    z-index:999;
  }
  .nav-links.mobile-open a{font-size:1.1rem;padding:0.5rem 0}
  .nav-right.mobile-open{display:flex;flex-direction:column;position:fixed;top:270px;left:0;right:0;
    padding:1rem 2rem 2rem;gap:0.8rem;background:rgba(10,15,31,0.98);z-index:999;
    border-bottom:1px solid rgba(255,255,255,0.06);
  }
  .nav-right.mobile-open .search-box{width:100%}
  .nav-right.mobile-open .btn-outline-nav,.nav-right.mobile-open .btn-cta-nav{width:100%;text-align:center}
}
@media(max-width:576px){
  .navbar-custom{padding:0 1rem}
  .navbar-brand{font-size:1.2rem}
  .nav-links.mobile-open{padding:1.2rem 1.5rem}
  .nav-right.mobile-open{padding:0.8rem 1.5rem 1.5rem}
}
/* Hero */
.hero{
  min-height:100vh;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,#0A0F1F 0%,#141B2D 40%,#1A2444 70%,#0A0F1F 100%);
  position:relative;overflow:hidden;padding:100px 0 60px;
}
.hero::before{
  content:'';position:absolute;top:-50%;left:-50%;width:200%;height:200%;
  background:radial-gradient(circle at 30% 50%,rgba(108,99,255,0.08) 0%,transparent 50%),
             radial-gradient(circle at 70% 80%,rgba(0,212,255,0.06) 0%,transparent 40%);
  pointer-events:none;animation:heroGlow 12s ease-in-out infinite alternate;
}
@keyframes heroGlow{
  0%{transform:translate(0,0) scale(1)}
  100%{transform:translate(-2%,-2%) scale(1.05)}
}
.hero-content{position:relative;z-index:2;text-align:center;max-width:900px;margin:0 auto;padding:0 1.5rem}
.hero h1{
  font-size:3rem;font-weight:800;line-height:1.2;margin-bottom:1.2rem;
  background:linear-gradient(135deg,#F5F7FA 0%,var(--primary-light) 50%,var(--secondary) 100%);
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;
}
.hero p{
  font-size:1.2rem;color:var(--text-muted);max-width:680px;margin:0 auto 2rem;line-height:1.8;
}
.hero-actions{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap}
.btn-hero-primary{
  background:linear-gradient(135deg,var(--primary),var(--secondary));
  color:#fff;border:none;border-radius:var(--radius-btn);
  padding:0.9rem 2.2rem;font-size:1.05rem;font-weight:600;
  box-shadow:0 0 25px rgba(108,99,255,0.4);
  transition:var(--transition);cursor:pointer;display:inline-flex;align-items:center;gap:0.5rem;
}
.btn-hero-primary:hover{box-shadow:0 0 40px rgba(108,99,255,0.7);transform:translateY(-2px);color:#fff}
.btn-hero-secondary{
  background:transparent;border:1.5px solid rgba(255,255,255,0.3);color:var(--text-white);
  border-radius:var(--radius-btn);padding:0.9rem 2.2rem;font-size:1.05rem;font-weight:500;
  transition:var(--transition);cursor:pointer;display:inline-flex;align-items:center;gap:0.5rem;
}
.btn-hero-secondary:hover{background:rgba(255,255,255,0.08);border-color:var(--primary);color:var(--text-white)}
.scroll-indicator{
  position:absolute;bottom:30px;left:50%;transform:translateX(-50%);
  display:flex;flex-direction:column;align-items:center;gap:6px;color:var(--text-muted);
  font-size:0.8rem;animation:bounce 2s ease-in-out infinite;cursor:pointer;
}
.scroll-indicator i{font-size:1.2rem}
@keyframes bounce{
  0%,20%,50%,80%,100%{transform:translateX(-50%) translateY(0)}
  40%{transform:translateX(-50%) translateY(-8px)}
  60%{transform:translateX(-50%) translateY(-4px)}
}
@media(max-width:768px){
  .hero h1{font-size:2rem}
  .hero p{font-size:1rem}
  .hero-actions{flex-direction:column;align-items:center}
  .btn-hero-primary,.btn-hero-secondary{width:100%;justify-content:center}
}
@media(max-width:576px){
  .hero h1{font-size:1.6rem}
  .hero{padding:80px 0 40px;min-height:auto}
}
/* 通用板块 */
.section{padding:5rem 0}
.section-title{text-align:center;margin-bottom:3.5rem}
.section-title h2{
  font-size:2rem;font-weight:700;margin-bottom:0.8rem;
  background:linear-gradient(135deg,#F5F7FA 0%,var(--primary-light) 100%);
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;
}
.section-title p{color:var(--text-muted);font-size:1.05rem;max-width:600px;margin:0 auto}
@media(max-width:768px){
  .section{padding:3rem 0}
  .section-title h2{font-size:1.5rem}
  .section-title p{font-size:0.95rem}
}
/* 玻璃拟态卡片 */
.card-glass{
  background:var(--bg-card);border:1px solid var(--border-card);
  border-radius:var(--radius-card);backdrop-filter:blur(20px);
  -webkit-backdrop-filter:blur(20px);
  box-shadow:var(--shadow-card);padding:1.5rem 1.8rem;
  transition:var(--transition);height:100%;
}
.card-glass:hover{border-color:rgba(108,99,255,0.4);box-shadow:0 8px 40px rgba(108,99,255,0.15)}
.card-glass .card-icon{font-size:2.2rem;margin-bottom:1rem;background:linear-gradient(135deg,var(--primary),var(--secondary));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.card-glass h3{font-size:1.25rem;font-weight:600;margin-bottom:0.6rem;color:var(--text-white)}
.card-glass p{color:var(--text-muted);font-size:0.925rem;margin-bottom:0}
/* 阶梯卡片 */
.step-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:1.8rem}
.step-card{position:relative;padding:2rem 1.8rem;text-align:center}
.step-card .badge-step{
  position:absolute;top:-12px;right:20px;
  background:linear-gradient(135deg,var(--primary),var(--secondary));
  color:#fff;font-size:0.75rem;font-weight:600;padding:0.25rem 1rem;
  border-radius:20px;box-shadow:0 0 15px rgba(108,99,255,0.3);
}
.step-card .price{font-size:1.8rem;font-weight:700;color:var(--text-white);margin:0.8rem 0}
.step-card .price small{font-size:0.9rem;color:var(--text-muted);font-weight:400}
.step-card .feature-list{list-style:none;padding:0;margin:1.2rem 0;text-align:left}
.step-card .feature-list li{color:var(--text-muted);font-size:0.9rem;padding:0.35rem 0;display:flex;align-items:center;gap:0.5rem}
.step-card .feature-list li i{color:var(--primary);font-size:0.8rem}
.btn-card{
  display:inline-block;background:linear-gradient(135deg,var(--primary),var(--secondary));
  color:#fff;border:none;border-radius:var(--radius-btn);
  padding:0.6rem 1.8rem;font-size:0.95rem;font-weight:600;
  transition:var(--transition);cursor:pointer;width:100%;text-align:center;
}
.btn-card:hover{box-shadow:0 0 25px rgba(108,99,255,0.5);transform:translateY(-1px);color:#fff}
.btn-card-outline{
  display:inline-block;background:transparent;border:1px solid rgba(255,255,255,0.25);
  color:var(--text-white);border-radius:var(--radius-btn);
  padding:0.6rem 1.8rem;font-size:0.95rem;font-weight:500;
  transition:var(--transition);cursor:pointer;width:100%;text-align:center;
}
.btn-card-outline:hover{background:rgba(255,255,255,0.08);border-color:var(--primary);color:var(--text-white)}
.step-card.recommended{
  border-color:rgba(108,99,255,0.5);
  box-shadow:0 8px 40px rgba(108,99,255,0.2);
  transform:scale(1.03);
}
.step-card.recommended .badge-step{background:linear-gradient(135deg,#FF6B6B,#FFB347)}
@media(max-width:991px){
  .step-cards{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:576px){
  .step-cards{grid-template-columns:1fr}
  .step-card.recommended{transform:none}
}
/* 套餐对比 */
.compare-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.5rem}
.compare-card{padding:2rem 1.5rem;text-align:center}
.compare-card h4{font-size:1.1rem;font-weight:600;margin-bottom:0.5rem}
.compare-card .price{font-size:2rem;font-weight:700;color:var(--secondary);margin:0.5rem 0}
.compare-card .price small{font-size:0.85rem;color:var(--text-muted)}
.compare-card ul{list-style:none;padding:0;margin:1rem 0 1.5rem;text-align:left}
.compare-card ul li{color:var(--text-muted);font-size:0.88rem;padding:0.4rem 0;display:flex;align-items:center;gap:0.6rem;border-bottom:1px solid rgba(255,255,255,0.04)}
.compare-card ul li i{font-size:0.75rem;width:18px;text-align:center}
.compare-card ul li .fa-check{color:#00D26A}
.compare-card ul li .fa-times{color:#FF6B6B}
.compare-card.recommended{transform:scale(1.03);border-color:rgba(108,99,255,0.5)}
@media(max-width:991px){
  .compare-grid{grid-template-columns:1fr;max-width:450px;margin:0 auto}
  .compare-card.recommended{transform:none}
}
/* 限时入口 */
.flash-sale{
  background:linear-gradient(135deg,rgba(108,99,255,0.12),rgba(0,212,255,0.08));
  border:1px solid rgba(108,99,255,0.25);
  border-radius:var(--radius-card);
  padding:3rem 2rem;text-align:center;position:relative;overflow:hidden;
}
.flash-sale::before{
  content:'';position:absolute;top:0;left:-100%;width:200%;height:100%;
  background:linear-gradient(90deg,transparent,rgba(108,99,255,0.05),transparent);
  animation:shimmer 4s ease-in-out infinite;
}
@keyframes shimmer{
  0%{transform:translateX(-30%)}
  100%{transform:translateX(30%)}
}
.flash-sale h3{font-size:1.8rem;font-weight:700;margin-bottom:0.5rem}
.flash-sale h3 span{background:linear-gradient(135deg,#FF6B6B,#FFB347);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.flash-sale .countdown{display:flex;justify-content:center;gap:1.2rem;margin:1.5rem 0 2rem}
.flash-sale .countdown .time-block{display:flex;flex-direction:column;align-items:center}
.flash-sale .countdown .time-block .num{
  font-size:2.2rem;font-weight:700;color:var(--text-white);
  background:rgba(255,255,255,0.08);border-radius:10px;
  padding:0.3rem 1rem;min-width:60px;text-align:center;
  font-family:var(--font-en);
}
.flash-sale .countdown .time-block .label{font-size:0.8rem;color:var(--text-muted);margin-top:0.3rem}
.btn-flash{
  background:linear-gradient(135deg,#FF6B6B,#FFB347);
  color:#fff;border:none;border-radius:var(--radius-btn);
  padding:0.9rem 2.5rem;font-size:1.05rem;font-weight:600;
  box-shadow:0 0 25px rgba(255,107,107,0.4);
  transition:var(--transition);cursor:pointer;
}
.btn-flash:hover{box-shadow:0 0 40px rgba(255,107,107,0.6);transform:translateY(-2px);color:#fff}
@media(max-width:576px){
  .flash-sale{padding:2rem 1.2rem}
  .flash-sale h3{font-size:1.3rem}
  .flash-sale .countdown .time-block .num{font-size:1.5rem;min-width:45px;padding:0.2rem 0.7rem}
}
/* 资讯列表 */
.news-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1.5rem}
.news-item{padding:1.5rem;transition:var(--transition);cursor:pointer}
.news-item:hover{border-color:rgba(108,99,255,0.3)}
.news-item .news-cat{
  display:inline-block;background:linear-gradient(135deg,var(--primary),var(--secondary));
  color:#fff;font-size:0.75rem;font-weight:600;padding:0.2rem 0.8rem;
  border-radius:20px;margin-bottom:0.6rem;
}
.news-item h3{font-size:1.15rem;font-weight:600;margin-bottom:0.4rem;color:var(--text-white);transition:var(--transition)}
.news-item:hover h3{color:var(--primary-light)}
.news-item .summary{color:var(--text-muted);font-size:0.9rem;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:0.6rem}
.news-item .meta{display:flex;align-items:center;gap:1rem;font-size:0.8rem;color:var(--text-muted)}
.news-item .meta .date{display:flex;align-items:center;gap:0.3rem}
.news-item .meta .read-more{color:var(--primary);font-weight:500;margin-left:auto;transition:var(--transition)}
.news-item:hover .meta .read-more{color:var(--secondary)}
.empty-state{text-align:center;padding:3rem 1rem;color:var(--text-muted);grid-column:1/-1}
.empty-state i{font-size:3rem;margin-bottom:1rem;opacity:0.5}
.empty-state p{font-size:1rem}
@media(max-width:768px){
  .news-grid{grid-template-columns:1fr}
}
/* 咨询表单 */
.form-section{
  background:linear-gradient(135deg,rgba(10,15,31,0.6),rgba(20,27,45,0.8));
  border-radius:var(--radius-card);padding:3rem 2.5rem;
  border:1px solid rgba(255,255,255,0.06);
}
.form-section h3{font-size:1.6rem;font-weight:700;margin-bottom:0.5rem}
.form-section .form-sub{color:var(--text-muted);margin-bottom:2rem}
.form-control-custom{
  background:var(--bg-input);border:1px solid var(--border-input);
  border-radius:10px;padding:0.75rem 1rem;color:var(--text-white);
  font-size:0.95rem;transition:var(--transition);width:100%;outline:none;
}
.form-control-custom:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(108,99,255,0.15)}
.form-control-custom::placeholder{color:var(--text-muted)}
textarea.form-control-custom{min-height:110px;resize:vertical}
.btn-submit{
  background:linear-gradient(135deg,var(--primary),var(--secondary));
  color:#fff;border:none;border-radius:var(--radius-btn);
  padding:0.8rem 2rem;font-size:1rem;font-weight:600;
  box-shadow:0 0 20px rgba(108,99,255,0.3);
  transition:var(--transition);cursor:pointer;width:100%;
}
.btn-submit:hover{box-shadow:0 0 35px rgba(108,99,255,0.5);transform:translateY(-1px);color:#fff}
@media(max-width:576px){
  .form-section{padding:2rem 1.2rem}
}
/* FAQ */
.faq-item{
  background:var(--bg-card);border:1px solid var(--border-card);
  border-radius:12px;margin-bottom:0.8rem;overflow:hidden;
  transition:var(--transition);
}
.faq-item:hover{border-color:rgba(108,99,255,0.2)}
.faq-question{
  padding:1.2rem 1.5rem;display:flex;justify-content:space-between;align-items:center;
  cursor:pointer;color:var(--text-white);font-weight:500;font-size:1rem;
  transition:var(--transition);user-select:none;
}
.faq-question:hover{color:var(--primary-light)}
.faq-question i{transition:transform 0.3s ease;color:var(--text-muted);font-size:0.9rem}
.faq-item.open .faq-question i{transform:rotate(45deg);color:var(--primary)}
.faq-answer{
  max-height:0;overflow:hidden;transition:max-height 0.35s ease, padding 0.3s ease;
  padding:0 1.5rem;color:var(--text-muted);font-size:0.925rem;line-height:1.7;
}
.faq-item.open .faq-answer{
  max-height:300px;padding:0 1.5rem 1.2rem;
}
/* 页脚 */
.footer{
  background:#0A0F1F;border-top:1px solid rgba(255,255,255,0.06);
  padding:4rem 0 0;
}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:2.5rem;margin-bottom:2.5rem}
.footer-brand .logo{font-size:1.4rem;font-weight:700;background:linear-gradient(135deg,var(--primary),var(--secondary));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;display:flex;align-items:center;gap:8px;margin-bottom:0.8rem}
.footer-brand p{color:var(--text-muted);font-size:0.9rem;max-width:360px;line-height:1.7}
.footer-links h5{color:var(--text-white);font-size:1rem;font-weight:600;margin-bottom:1rem}
.footer-links ul{list-style:none;padding:0}
.footer-links ul li{margin-bottom:0.5rem}
.footer-links ul li a{color:var(--text-muted);font-size:0.9rem;transition:var(--transition)}
.footer-links ul li a:hover{color:var(--primary-light);padding-left:3px}
.footer-social{display:flex;gap:0.8rem;margin-top:1rem}
.footer-social a{
  display:flex;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:50%;
  background:rgba(255,255,255,0.06);border:1px solid rgba(255,255,255,0.1);
  color:var(--text-muted);font-size:1rem;transition:var(--transition);
}
.footer-social a:hover{background:var(--primary);border-color:var(--primary);color:#fff;transform:translateY(-2px)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,0.06);
  padding:1.5rem 0;text-align:center;
  color:var(--text-muted);font-size:0.85rem;
}
.footer-bottom a{color:var(--text-muted)}
.footer-bottom a:hover{color:var(--primary-light)}
@media(max-width:768px){
  .footer-grid{grid-template-columns:1fr;gap:2rem}
  .footer-brand p{max-width:100%}
}
/* 响应式辅助 */
@media(max-width:992px){
  .container{max-width:100%}
}
@media(max-width:576px){
  .section-title h2{font-size:1.3rem}
  .card-glass{padding:1.2rem 1rem}
}
/* 按钮通用状态 */
.btn:focus,.btn-cta-nav:focus,.btn-hero-primary:focus,.btn-hero-secondary:focus,
.btn-card:focus,.btn-card-outline:focus,.btn-flash:focus,.btn-submit:focus,
.form-control-custom:focus{outline:2px solid var(--primary);outline-offset:2px}

/* roulang page: category1 */
:root {
            --primary-dark: #0A0F1F;
            --primary-mid: #141B2D;
            --accent-primary: #6C63FF;
            --accent-secondary: #00D4FF;
            --text-white: #F5F7FA;
            --text-muted: #8892B0;
            --border-light: rgba(255, 255, 255, 0.1);
            --glass-bg: rgba(255, 255, 255, 0.05);
            --radius-card: 16px;
            --radius-btn: 10px;
            --shadow-glow: 0 0 20px rgba(108, 99, 255, 0.5);
            --spacing-section: 5rem;
            --spacing-section-mobile: 2.5rem;
            --font-sans: 'PingFang SC', 'Microsoft YaHei', -apple-system, BlinkMacSystemFont, sans-serif;
            --font-num: 'Inter', 'Segoe UI', sans-serif;
            --transition-base: all 0.3s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-sans);
            background: var(--primary-dark);
            color: var(--text-white);
            line-height: 1.7;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: var(--accent-secondary);
            text-decoration: none;
            transition: var(--transition-base);
        }
        a:hover {
            color: var(--accent-primary);
        }

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

        .container {
            max-width: 1200px;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
            margin: 0 auto;
        }

        /* ===== NAVIGATION ===== */
        .navbar-custom {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            height: 70px;
            background: rgba(10, 15, 31, 0.85);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-light);
            transition: var(--transition-base);
        }

        .navbar-custom .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            flex-wrap: nowrap;
        }

        .navbar-brand {
            font-size: 1.4rem;
            font-weight: 700;
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            display: flex;
            align-items: center;
            gap: 0.4rem;
            letter-spacing: -0.3px;
            flex-shrink: 0;
        }
        .navbar-brand i {
            font-size: 1.2rem;
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .nav-links {
            display: flex;
            list-style: none;
            gap: 1.8rem;
            margin: 0;
            padding: 0;
            align-items: center;
            flex-shrink: 0;
        }
        .nav-links li a {
            font-size: 0.95rem;
            color: #C0C8DF;
            padding: 0.3rem 0;
            position: relative;
            font-weight: 500;
            transition: var(--transition-base);
        }
        .nav-links li a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
            transition: width 0.35s ease;
            border-radius: 2px;
        }
        .nav-links li a:hover {
            color: #fff;
        }
        .nav-links li a:hover::after {
            width: 100%;
        }
        .nav-links li a.active {
            color: #fff;
        }
        .nav-links li a.active::after {
            width: 100%;
        }

        .nav-right {
            display: flex;
            align-items: center;
            gap: 0.8rem;
            flex-shrink: 0;
        }

        .search-box {
            display: flex;
            align-items: center;
            background: #1E2433;
            border: 1px solid #2A3455;
            border-radius: 20px;
            padding: 0.35rem 0.9rem;
            gap: 0.4rem;
            transition: var(--transition-base);
            width: 180px;
        }
        .search-box:focus-within {
            border-color: var(--accent-primary);
            box-shadow: 0 0 12px rgba(108, 99, 255, 0.25);
        }
        .search-box i {
            color: var(--text-muted);
            font-size: 0.85rem;
        }
        .search-box input {
            background: transparent;
            border: none;
            outline: none;
            color: var(--text-white);
            font-size: 0.85rem;
            width: 100%;
        }
        .search-box input::placeholder {
            color: var(--text-muted);
        }

        .btn-outline-nav {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.25);
            color: var(--text-white);
            padding: 0.45rem 1.2rem;
            border-radius: var(--radius-btn);
            font-size: 0.85rem;
            font-weight: 500;
            transition: var(--transition-base);
            white-space: nowrap;
        }
        .btn-outline-nav:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(255, 255, 255, 0.5);
        }

        .btn-cta-nav {
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            color: #fff;
            border: none;
            padding: 0.45rem 1.4rem;
            border-radius: var(--radius-btn);
            font-size: 0.85rem;
            font-weight: 600;
            transition: var(--transition-base);
            box-shadow: 0 0 12px rgba(108, 99, 255, 0.3);
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 0.3rem;
        }
        .btn-cta-nav:hover {
            box-shadow: 0 0 28px rgba(108, 99, 255, 0.6);
            transform: translateY(-1px);
            color: #fff;
        }

        .hamburger {
            display: none;
            background: transparent;
            border: none;
            color: var(--text-white);
            font-size: 1.5rem;
            cursor: pointer;
            padding: 0.2rem 0.4rem;
        }

        /* ===== HERO ===== */
        .hero-section {
            position: relative;
            min-height: 70vh;
            display: flex;
            align-items: center;
            padding: 100px 0 80px;
            background: linear-gradient(135deg, #0A0F1F 0%, #141B2D 50%, #0F1A2E 100%);
            overflow: hidden;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            top: -30%;
            right: -20%;
            width: 700px;
            height: 700px;
            background: radial-gradient(circle, rgba(108, 99, 255, 0.15) 0%, transparent 70%);
            pointer-events: none;
        }
        .hero-section::after {
            content: '';
            position: absolute;
            bottom: -20%;
            left: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(0, 212, 255, 0.1) 0%, transparent 70%);
            pointer-events: none;
        }
        .hero-bg-img {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            opacity: 0.15;
            pointer-events: none;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 800px;
        }
        .hero-content .badge-hero {
            display: inline-block;
            background: rgba(108, 99, 255, 0.2);
            border: 1px solid rgba(108, 99, 255, 0.3);
            color: var(--accent-secondary);
            padding: 0.3rem 1rem;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 500;
            letter-spacing: 0.5px;
            margin-bottom: 1.2rem;
            backdrop-filter: blur(4px);
        }
        .hero-content h1 {
            font-size: 3rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 1.2rem;
            background: linear-gradient(135deg, #fff 30%, var(--accent-secondary) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-content p {
            font-size: 1.15rem;
            color: var(--text-muted);
            max-width: 600px;
            margin-bottom: 2rem;
            line-height: 1.8;
        }
        .hero-actions {
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
        }

        .btn-primary-custom {
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            color: #fff;
            border: none;
            padding: 0.8rem 2.2rem;
            border-radius: var(--radius-btn);
            font-size: 1rem;
            font-weight: 600;
            transition: var(--transition-base);
            box-shadow: 0 0 20px rgba(108, 99, 255, 0.4);
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        .btn-primary-custom:hover {
            box-shadow: 0 0 40px rgba(108, 99, 255, 0.7);
            transform: translateY(-2px);
            color: #fff;
        }

        .btn-secondary-custom {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.3);
            color: var(--text-white);
            padding: 0.8rem 2rem;
            border-radius: var(--radius-btn);
            font-size: 1rem;
            font-weight: 500;
            transition: var(--transition-base);
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        .btn-secondary-custom:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(255, 255, 255, 0.5);
            color: #fff;
        }

        /* ===== SECTION COMMON ===== */
        .section-padding {
            padding: var(--spacing-section) 0;
        }
        .section-title-wrap {
            text-align: center;
            margin-bottom: 3.5rem;
        }
        .section-title-wrap h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 0.8rem;
            background: linear-gradient(135deg, #fff 50%, var(--accent-secondary) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .section-title-wrap p {
            color: var(--text-muted);
            font-size: 1.05rem;
            max-width: 600px;
            margin: 0 auto;
        }

        /* ===== GLASS CARD ===== */
        .glass-card {
            background: var(--glass-bg);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            padding: 2rem 1.8rem;
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
            transition: var(--transition-base);
            height: 100%;
        }
        .glass-card:hover {
            border-color: rgba(108, 99, 255, 0.4);
            box-shadow: 0 8px 40px rgba(108, 99, 255, 0.15), 0 0 0 1px rgba(108, 99, 255, 0.1);
            transform: translateY(-4px);
        }
        .glass-card .icon-wrap {
            width: 56px;
            height: 56px;
            border-radius: 14px;
            background: linear-gradient(135deg, rgba(108, 99, 255, 0.2), rgba(0, 212, 255, 0.15));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--accent-secondary);
            margin-bottom: 1.2rem;
            border: 1px solid rgba(108, 99, 255, 0.2);
        }
        .glass-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 0.6rem;
            color: #fff;
        }
        .glass-card p {
            color: var(--text-muted);
            font-size: 0.92rem;
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ===== FEATURES GRID ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }

        /* ===== SCENARIO SECTION ===== */
        .scenario-section {
            background: linear-gradient(180deg, #0A0F1F 0%, #0F1A2E 100%);
            position: relative;
        }
        .scenario-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(108, 99, 255, 0.3), transparent);
        }
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 1.5rem;
        }
        .scenario-card {
            display: flex;
            gap: 1.2rem;
            align-items: flex-start;
            background: var(--glass-bg);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            padding: 1.8rem 1.5rem;
            transition: var(--transition-base);
        }
        .scenario-card:hover {
            border-color: rgba(0, 212, 255, 0.3);
            transform: translateY(-2px);
        }
        .scenario-card .num {
            font-size: 2rem;
            font-weight: 800;
            font-family: var(--font-num);
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1;
            min-width: 40px;
        }
        .scenario-card h4 {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 0.3rem;
        }
        .scenario-card p {
            color: var(--text-muted);
            font-size: 0.88rem;
            margin-bottom: 0;
            line-height: 1.6;
        }

        /* ===== PROCESS / TIMELINE ===== */
        .process-section {
            background: var(--primary-mid);
            position: relative;
        }
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
            position: relative;
        }
        .process-steps::before {
            content: '';
            position: absolute;
            top: 32px;
            left: 10%;
            right: 10%;
            height: 2px;
            background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary), var(--accent-primary));
            opacity: 0.3;
        }
        .step-item {
            text-align: center;
            position: relative;
            z-index: 2;
        }
        .step-item .step-icon {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: linear-gradient(135deg, rgba(108, 99, 255, 0.2), rgba(0, 212, 255, 0.15));
            border: 1px solid rgba(108, 99, 255, 0.3);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1rem;
            font-size: 1.4rem;
            color: var(--accent-secondary);
            transition: var(--transition-base);
        }
        .step-item:hover .step-icon {
            box-shadow: 0 0 30px rgba(108, 99, 255, 0.3);
            border-color: var(--accent-primary);
        }
        .step-item h4 {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 0.3rem;
        }
        .step-item p {
            color: var(--text-muted);
            font-size: 0.85rem;
            margin-bottom: 0;
            line-height: 1.5;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--primary-dark);
        }
        .faq-accordion .accordion-item {
            background: var(--glass-bg);
            border: 1px solid var(--border-light);
            border-radius: 12px !important;
            margin-bottom: 0.8rem;
            overflow: hidden;
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
        }
        .faq-accordion .accordion-button {
            background: transparent;
            color: var(--text-white);
            font-weight: 600;
            font-size: 1rem;
            padding: 1.2rem 1.5rem;
            box-shadow: none;
            border: none;
        }
        .faq-accordion .accordion-button:not(.collapsed) {
            background: rgba(108, 99, 255, 0.08);
            color: var(--accent-secondary);
        }
        .faq-accordion .accordion-button::after {
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%238892B0'%3E%3Cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3E%3C/svg%3E");
            transition: var(--transition-base);
        }
        .faq-accordion .accordion-button:not(.collapsed)::after {
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%236C63FF'%3E%3Cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3E%3C/svg%3E");
        }
        .faq-accordion .accordion-body {
            color: var(--text-muted);
            font-size: 0.92rem;
            padding: 0.5rem 1.5rem 1.2rem;
            line-height: 1.7;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, #0A0F1F 0%, #141B2D 100%);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 800px;
            height: 800px;
            background: radial-gradient(circle, rgba(108, 99, 255, 0.08) 0%, transparent 60%);
            pointer-events: none;
        }
        .cta-box {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 700px;
            margin: 0 auto;
        }
        .cta-box h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 1rem;
        }
        .cta-box p {
            color: var(--text-muted);
            font-size: 1.05rem;
            margin-bottom: 2rem;
        }

        /* ===== CONTACT FORM ===== */
        .contact-form-wrap {
            max-width: 600px;
            margin: 0 auto;
        }
        .contact-form-wrap .form-control {
            background: #1E2433;
            border: 1px solid #2A3455;
            border-radius: 10px;
            color: var(--text-white);
            padding: 0.75rem 1rem;
            font-size: 0.92rem;
            transition: var(--transition-base);
        }
        .contact-form-wrap .form-control:focus {
            border-color: var(--accent-primary);
            box-shadow: 0 0 0 3px rgba(108, 99, 255, 0.15);
            background: #1E2433;
            color: #fff;
        }
        .contact-form-wrap .form-control::placeholder {
            color: #5A6482;
        }
        .contact-form-wrap textarea {
            min-height: 100px;
            resize: vertical;
        }
        .contact-form-wrap .btn-submit {
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            color: #fff;
            border: none;
            padding: 0.75rem 2.5rem;
            border-radius: var(--radius-btn);
            font-size: 1rem;
            font-weight: 600;
            transition: var(--transition-base);
            box-shadow: 0 0 20px rgba(108, 99, 255, 0.3);
            width: 100%;
        }
        .contact-form-wrap .btn-submit:hover {
            box-shadow: 0 0 40px rgba(108, 99, 255, 0.5);
            transform: translateY(-2px);
            color: #fff;
        }

        /* ===== FOOTER ===== */
        .footer {
            background: #0A0F1F;
            border-top: 1px solid var(--border-light);
            padding: 3.5rem 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr;
            gap: 2.5rem;
            margin-bottom: 2rem;
        }
        .footer-brand .logo {
            font-size: 1.3rem;
            font-weight: 700;
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            display: flex;
            align-items: center;
            gap: 0.4rem;
            margin-bottom: 0.8rem;
        }
        .footer-brand .logo i {
            font-size: 1.1rem;
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .footer-brand p {
            color: var(--text-muted);
            font-size: 0.88rem;
            line-height: 1.7;
            margin-bottom: 1rem;
            max-width: 380px;
        }
        .footer-social {
            display: flex;
            gap: 0.8rem;
        }
        .footer-social a {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-muted);
            font-size: 0.9rem;
            transition: var(--transition-base);
        }
        .footer-social a:hover {
            background: var(--accent-primary);
            border-color: var(--accent-primary);
            color: #fff;
        }
        .footer-links h5 {
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 1.2rem;
        }
        .footer-links ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links ul li {
            margin-bottom: 0.6rem;
        }
        .footer-links ul li a {
            color: var(--text-muted);
            font-size: 0.88rem;
            transition: var(--transition-base);
        }
        .footer-links ul li a:hover {
            color: var(--accent-secondary);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 1.5rem 0;
            text-align: center;
        }
        .footer-bottom p {
            color: var(--text-muted);
            font-size: 0.82rem;
            margin-bottom: 0;
        }
        .footer-bottom a {
            color: var(--text-muted);
        }
        .footer-bottom a:hover {
            color: var(--accent-secondary);
        }

        /* ===== RESPONSIVE ===== */
        @media (max-width: 992px) {
            .nav-links {
                gap: 1.2rem;
            }
            .search-box {
                width: 140px;
            }
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-steps {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-steps::before {
                display: none;
            }
            .hero-content h1 {
                font-size: 2.4rem;
            }
        }

        @media (max-width: 768px) {
            .nav-links,
            .nav-right {
                display: none;
            }
            .hamburger {
                display: block;
            }
            .nav-links.open {
                display: flex;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background: rgba(10, 15, 31, 0.98);
                backdrop-filter: blur(16px);
                padding: 1.5rem 2rem;
                gap: 1rem;
                border-bottom: 1px solid var(--border-light);
                align-items: stretch;
            }
            .nav-right.open {
                display: flex;
                flex-direction: column;
                position: absolute;
                top: calc(70px + 220px);
                left: 0;
                right: 0;
                background: rgba(10, 15, 31, 0.98);
                backdrop-filter: blur(16px);
                padding: 0 2rem 1.5rem;
                gap: 0.8rem;
                border-bottom: 1px solid var(--border-light);
                align-items: stretch;
            }
            .nav-right.open .search-box {
                width: 100%;
            }
            .nav-right.open .btn-outline-nav,
            .nav-right.open .btn-cta-nav {
                width: 100%;
                justify-content: center;
            }

            .hero-section {
                min-height: 60vh;
                padding: 80px 0 60px;
            }
            .hero-content h1 {
                font-size: 1.8rem;
            }
            .hero-content p {
                font-size: 1rem;
            }

            .section-padding {
                padding: var(--spacing-section-mobile) 0;
            }
            .section-title-wrap h2 {
                font-size: 1.6rem;
            }

            .features-grid {
                grid-template-columns: 1fr;
            }
            .scenario-grid {
                grid-template-columns: 1fr;
            }
            .process-steps {
                grid-template-columns: 1fr;
                gap: 1.8rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .hero-actions .btn-primary-custom,
            .hero-actions .btn-secondary-custom {
                justify-content: center;
            }

            .navbar-brand {
                font-size: 1.2rem;
            }
        }

        @media (max-width: 576px) {
            .container {
                padding-left: 1rem;
                padding-right: 1rem;
            }
            .hero-content h1 {
                font-size: 1.6rem;
            }
            .glass-card {
                padding: 1.5rem 1.2rem;
            }
            .cta-box h2 {
                font-size: 1.5rem;
            }
        }

        /* ===== ANIMATIONS ===== */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .animate-fade-up {
            animation: fadeInUp 0.7s ease forwards;
        }
        .animate-fade-up-delay-1 {
            animation-delay: 0.15s;
        }
        .animate-fade-up-delay-2 {
            animation-delay: 0.3s;
        }
        .animate-fade-up-delay-3 {
            animation-delay: 0.45s;
        }

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --primary-dark: #0A0F1F;
            --primary-mid: #141B2D;
            --primary-glow: #6C63FF;
            --primary-cyan: #00D4FF;
            --primary-gradient: linear-gradient(135deg, #6C63FF 0%, #00D4FF 100%);
            --text-white: #F5F7FA;
            --text-light: #C0C8DF;
            --text-muted: #8892B0;
            --bg-card: rgba(255, 255, 255, 0.05);
            --border-card: rgba(255, 255, 255, 0.1);
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.3);
            --radius-card: 16px;
            --radius-btn: 10px;
            --radius-input: 20px;
            --font-body: 'Inter', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
            --transition: all 0.3s ease;
            --nav-height: 70px;
            --container-max: 1200px;
            --section-gap: 5rem;
        }

        /* ===== Reset / Base ===== */
        * { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: var(--font-body);
            background: var(--primary-dark);
            color: var(--text-white);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        a { color: var(--primary-cyan); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary-glow); }
        img { max-width: 100%; height: auto; border-radius: 12px; }
        ul { list-style: none; padding: 0; margin: 0; }

        /* ===== Container ===== */
        .container { max-width: var(--container-max); padding: 0 1.5rem; margin: 0 auto; }

        /* ===== 导航 ===== */
        .navbar-custom {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: var(--nav-height);
            background: rgba(10, 15, 31, 0.85);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            z-index: 1050;
            display: flex;
            align-items: center;
            transition: var(--transition);
        }
        .navbar-custom .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: nowrap;
        }
        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 1.4rem;
            font-weight: 800;
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.5px;
            text-decoration: none;
        }
        .navbar-brand i {
            font-size: 1.3rem;
            color: var(--primary-glow);
            -webkit-text-fill-color: var(--primary-glow);
        }
        .navbar-brand:hover { opacity: 0.9; }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 1.5rem;
            margin: 0;
        }
        .nav-links li a {
            color: var(--text-light);
            font-size: 0.95rem;
            font-weight: 500;
            padding: 0.4rem 0;
            position: relative;
            transition: var(--transition);
            text-decoration: none;
        }
        .nav-links li a::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -2px;
            width: 0;
            height: 2px;
            background: var(--primary-gradient);
            transition: var(--transition);
            border-radius: 2px;
        }
        .nav-links li a:hover::after,
        .nav-links li a.active::after { width: 100%; }
        .nav-links li a:hover { color: var(--text-white); }
        .nav-links li a.active { color: var(--text-white); font-weight: 600; }

        .nav-right {
            display: flex;
            align-items: center;
            gap: 1rem;
        }
        .search-box {
            display: flex;
            align-items: center;
            background: #1E2433;
            border: 1px solid #2A3455;
            border-radius: var(--radius-input);
            padding: 0.4rem 1rem;
            width: 200px;
            transition: var(--transition);
        }
        .search-box:focus-within { border-color: var(--primary-glow); box-shadow: 0 0 12px rgba(108, 99, 255, 0.25); }
        .search-box i { color: var(--text-muted); font-size: 0.9rem; margin-right: 0.5rem; }
        .search-box input {
            background: transparent;
            border: none;
            outline: none;
            color: var(--text-white);
            font-size: 0.9rem;
            width: 100%;
        }
        .search-box input::placeholder { color: var(--text-muted); }

        .btn-outline-nav {
            background: transparent;
            border: 1px solid var(--text-light);
            color: var(--text-light);
            padding: 0.5rem 1.2rem;
            border-radius: var(--radius-btn);
            font-size: 0.9rem;
            font-weight: 500;
            transition: var(--transition);
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
        }
        .btn-outline-nav:hover { background: var(--primary-gradient); border-color: transparent; color: #fff; box-shadow: 0 0 20px rgba(108, 99, 255, 0.4); }

        .btn-cta-nav {
            background: var(--primary-gradient);
            border: none;
            color: #fff;
            padding: 0.5rem 1.5rem;
            border-radius: var(--radius-btn);
            font-size: 0.9rem;
            font-weight: 600;
            transition: var(--transition);
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            box-shadow: 0 0 20px rgba(108, 99, 255, 0.3);
        }
        .btn-cta-nav:hover { box-shadow: 0 0 35px rgba(108, 99, 255, 0.6); transform: translateY(-2px); }

        .hamburger {
            display: none;
            background: transparent;
            border: 1px solid var(--text-muted);
            color: var(--text-white);
            font-size: 1.3rem;
            padding: 0.4rem 0.8rem;
            border-radius: 8px;
            cursor: pointer;
            transition: var(--transition);
        }
        .hamburger:hover { border-color: var(--primary-glow); color: var(--primary-glow); }

        /* ===== 面包屑 ===== */
        .breadcrumb-wrapper {
            padding-top: calc(var(--nav-height) + 2rem);
            padding-bottom: 0.5rem;
        }
        .breadcrumb-custom {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        .breadcrumb-custom a { color: var(--text-muted); text-decoration: none; }
        .breadcrumb-custom a:hover { color: var(--primary-cyan); }
        .breadcrumb-custom .separator { color: var(--text-muted); opacity: 0.5; }
        .breadcrumb-custom .current { color: var(--text-light); font-weight: 500; }

        /* ===== 文章头部 ===== */
        .article-header {
            padding: 2rem 0 1.5rem;
        }
        .article-header .article-meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 1rem;
            margin-bottom: 1.2rem;
        }
        .article-header .article-category {
            background: var(--primary-gradient);
            color: #fff;
            padding: 0.25rem 1rem;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            display: inline-block;
        }
        .article-header .article-date {
            color: var(--text-muted);
            font-size: 0.85rem;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .article-header h1 {
            font-size: 2.6rem;
            font-weight: 800;
            line-height: 1.25;
            color: var(--text-white);
            margin-bottom: 0.5rem;
            letter-spacing: -0.3px;
        }
        .article-header .article-author {
            color: var(--text-muted);
            font-size: 0.9rem;
        }
        .article-header .article-author strong { color: var(--text-light); font-weight: 600; }

        /* ===== 正文阅读区 ===== */
        .article-body {
            padding: 2rem 0 3rem;
        }
        .article-content {
            max-width: 800px;
            margin: 0 auto;
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-card);
            padding: 2.5rem 2.8rem;
            backdrop-filter: blur(16px);
            box-shadow: var(--shadow-card);
            line-height: 1.85;
            font-size: 1.05rem;
            color: var(--text-light);
        }
        .article-content h2 {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--text-white);
            margin-top: 2rem;
            margin-bottom: 1rem;
            border-left: 4px solid var(--primary-glow);
            padding-left: 1rem;
        }
        .article-content h3 {
            font-size: 1.3rem;
            font-weight: 600;
            color: var(--text-white);
            margin-top: 1.5rem;
            margin-bottom: 0.8rem;
        }
        .article-content p { margin-bottom: 1.2rem; }
        .article-content ul, .article-content ol { margin-bottom: 1.2rem; padding-left: 1.5rem; }
        .article-content li { margin-bottom: 0.4rem; }
        .article-content blockquote {
            border-left: 4px solid var(--primary-glow);
            background: rgba(108, 99, 255, 0.08);
            padding: 1rem 1.5rem;
            margin: 1.5rem 0;
            border-radius: 8px;
            color: var(--text-light);
            font-style: italic;
        }
        .article-content code {
            background: #1E2433;
            color: var(--primary-cyan);
            padding: 0.2rem 0.6rem;
            border-radius: 6px;
            font-size: 0.9rem;
        }
        .article-content pre {
            background: #0A0F1F;
            border: 1px solid #2A3455;
            border-radius: 12px;
            padding: 1.5rem;
            overflow-x: auto;
            margin: 1.5rem 0;
        }
        .article-content pre code { background: transparent; padding: 0; color: var(--text-light); }
        .article-content img {
            display: block;
            margin: 1.5rem auto;
            border-radius: 12px;
            max-width: 100%;
        }
        .article-content a { color: var(--primary-cyan); text-decoration: underline; text-underline-offset: 3px; }
        .article-content a:hover { color: var(--primary-glow); }

        .article-content .empty-state {
            text-align: center;
            padding: 4rem 2rem;
            color: var(--text-muted);
            font-size: 1.1rem;
        }
        .article-content .empty-state a {
            display: inline-block;
            margin-top: 1.2rem;
            background: var(--primary-gradient);
            color: #fff;
            padding: 0.6rem 2rem;
            border-radius: var(--radius-btn);
            text-decoration: none;
            font-weight: 600;
            box-shadow: 0 0 20px rgba(108, 99, 255, 0.3);
            transition: var(--transition);
        }
        .article-content .empty-state a:hover { box-shadow: 0 0 35px rgba(108, 99, 255, 0.6); transform: translateY(-2px); }

        /* ===== 相关推荐 ===== */
        .related-articles {
            padding: 3rem 0 4rem;
        }
        .related-articles .section-title {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 2rem;
            text-align: center;
            position: relative;
        }
        .related-articles .section-title::after {
            content: '';
            display: block;
            width: 60px;
            height: 3px;
            background: var(--primary-gradient);
            margin: 0.6rem auto 0;
            border-radius: 4px;
        }
        .related-card {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-card);
            overflow: hidden;
            backdrop-filter: blur(12px);
            box-shadow: var(--shadow-card);
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .related-card:hover { border-color: var(--primary-glow); transform: translateY(-6px); box-shadow: 0 12px 40px rgba(108, 99, 255, 0.25); }
        .related-card .card-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            border-radius: 0;
        }
        .related-card .card-body {
            padding: 1.25rem 1.5rem 1.5rem;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .related-card .card-body h6 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-white);
            margin-bottom: 0.5rem;
            line-height: 1.4;
        }
        .related-card .card-body p {
            font-size: 0.85rem;
            color: var(--text-muted);
            flex: 1;
            margin-bottom: 0.8rem;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card .card-body .card-link {
            color: var(--primary-cyan);
            font-size: 0.85rem;
            font-weight: 500;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 0.3rem;
        }
        .related-card .card-body .card-link:hover { color: var(--primary-glow); gap: 0.6rem; }

        /* ===== 页脚 ===== */
        .footer {
            background: var(--primary-dark);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 3.5rem 0 1.5rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 3rem;
            margin-bottom: 2rem;
        }
        .footer-brand .logo {
            font-size: 1.4rem;
            font-weight: 800;
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 1rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .footer-brand .logo i { -webkit-text-fill-color: var(--primary-glow); color: var(--primary-glow); }
        .footer-brand p { color: var(--text-muted); font-size: 0.9rem; line-height: 1.7; margin-bottom: 1.2rem; }
        .footer-social { display: flex; gap: 1rem; }
        .footer-social a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px; height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-muted);
            font-size: 1rem;
            transition: var(--transition);
            text-decoration: none;
        }
        .footer-social a:hover { background: var(--primary-gradient); color: #fff; transform: translateY(-3px); }
        .footer-links h5 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-white);
            margin-bottom: 1.2rem;
        }
        .footer-links ul li { margin-bottom: 0.6rem; }
        .footer-links ul li a {
            color: var(--text-muted);
            font-size: 0.9rem;
            text-decoration: none;
            transition: var(--transition);
        }
        .footer-links ul li a:hover { color: var(--primary-cyan); padding-left: 4px; }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 1.5rem;
            text-align: center;
            color: var(--text-muted);
            font-size: 0.85rem;
        }
        .footer-bottom a { color: var(--text-muted); text-decoration: none; }
        .footer-bottom a:hover { color: var(--primary-cyan); }

        /* ===== 响应式 ===== */
        @media (max-width: 992px) {
            .nav-links { display: none; }
            .nav-right { display: none; }
            .hamburger { display: block; }
            .nav-links.mobile-open {
                display: flex;
                flex-direction: column;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: rgba(10, 15, 31, 0.98);
                backdrop-filter: blur(16px);
                padding: 1.5rem 2rem;
                gap: 1.2rem;
                border-bottom: 1px solid rgba(255, 255, 255, 0.06);
                z-index: 1040;
            }
            .nav-links.mobile-open li a { font-size: 1.1rem; }
            .nav-right.mobile-open {
                display: flex;
                flex-direction: row;
                flex-wrap: wrap;
                position: absolute;
                top: calc(var(--nav-height) + 240px);
                left: 0;
                right: 0;
                background: rgba(10, 15, 31, 0.98);
                backdrop-filter: blur(16px);
                padding: 0 2rem 1.5rem;
                border-bottom: 1px solid rgba(255, 255, 255, 0.06);
                z-index: 1040;
                gap: 0.8rem;
            }
            .nav-right.mobile-open .search-box { width: 100%; }
            .nav-right.mobile-open .btn-outline-nav,
            .nav-right.mobile-open .btn-cta-nav { flex: 1; justify-content: center; }

            .article-header h1 { font-size: 2rem; }
            .article-content { padding: 1.5rem 1.2rem; }
            .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
        }

        @media (max-width: 768px) {
            :root { --section-gap: 3rem; }
            .article-header h1 { font-size: 1.6rem; }
            .article-content { padding: 1.2rem 1rem; font-size: 0.95rem; }
            .article-content h2 { font-size: 1.3rem; }
            .article-content h3 { font-size: 1.1rem; }
            .related-articles .section-title { font-size: 1.4rem; }
            .breadcrumb-wrapper { padding-top: calc(var(--nav-height) + 1rem); }
        }

        @media (max-width: 576px) {
            .container { padding: 0 1rem; }
            .article-header h1 { font-size: 1.4rem; }
            .article-content { padding: 1rem 0.8rem; border-radius: 12px; }
            .related-card .card-img { height: 140px; }
        }

        /* ===== 滚动条美化 ===== */
        ::-webkit-scrollbar { width: 8px; }
        ::-webkit-scrollbar-track { background: var(--primary-dark); }
        ::-webkit-scrollbar-thumb { background: #2A3455; border-radius: 10px; }
        ::-webkit-scrollbar-thumb:hover { background: var(--primary-glow); }

        /* ===== 其他辅助 ===== */
        .mt-section { margin-top: var(--section-gap); }
        .mb-section { margin-bottom: var(--section-gap); }
        .text-gradient { background: var(--primary-gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }

/* roulang page: category2 */
:root {
            --primary: #6C63FF;
            --primary-light: #00D4FF;
            --primary-gradient: linear-gradient(135deg, #6C63FF, #00D4FF);
            --bg-dark: #0A0F1F;
            --bg-dark-alt: #141B2D;
            --bg-card: rgba(255, 255, 255, 0.05);
            --border-card: rgba(255, 255, 255, 0.10);
            --text-white: #F5F7FA;
            --text-muted: #8892B0;
            --text-light: #C0C8DF;
            --input-bg: #1E2433;
            --input-border: #2A3455;
            --shadow-glow: 0 0 30px rgba(108, 99, 255, 0.35);
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --transition: 0.30s cubic-bezier(0.4, 0, 0.2, 1);
            --font-family: 'Segoe UI', 'Inter', PingFang SC, 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
            --container-max: 1200px;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: var(--font-family);
            background: var(--bg-dark);
            color: var(--text-white);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary);
        }
        img {
            max-width: 100%;
            height: auto;
            border-radius: var(--radius-md);
        }
        .container {
            max-width: var(--container-max);
            padding-left: 1.5rem;
            padding-right: 1.5rem;
            margin-left: auto;
            margin-right: auto;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.25;
            font-weight: 700;
            color: var(--text-white);
        }
        h1 {
            font-size: clamp(2rem, 5vw, 3.2rem);
        }
        h2 {
            font-size: clamp(1.6rem, 3.5vw, 2.2rem);
            margin-bottom: 1rem;
        }
        h3 {
            font-size: clamp(1.15rem, 2vw, 1.4rem);
        }
        p {
            color: var(--text-light);
            margin-bottom: 1rem;
        }
        .section-title {
            text-align: center;
            margin-bottom: 3rem;
        }
        .section-title .subtitle {
            display: inline-block;
            font-size: 0.85rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 2px;
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 0.5rem;
        }
        .section-title h2 {
            margin-bottom: 0.75rem;
        }
        .section-title p {
            max-width: 600px;
            margin: 0 auto;
            font-size: 1.05rem;
        }
        section {
            padding: 5rem 0;
        }
        @media (max-width: 768px) {
            section {
                padding: 3rem 0;
            }
            .section-title {
                margin-bottom: 2rem;
            }
        }

        /* ===== 导航 ===== */
        .navbar-custom {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 70px;
            background: rgba(10, 15, 31, 0.85);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            z-index: 1050;
            display: flex;
            align-items: center;
            transition: background var(--transition);
        }
        .navbar-custom .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: nowrap;
        }
        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 0.55rem;
            font-size: 1.4rem;
            font-weight: 800;
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.5px;
            text-decoration: none;
            white-space: nowrap;
        }
        .navbar-brand i {
            font-size: 1.3rem;
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .navbar-brand:hover {
            opacity: 0.9;
        }
        .nav-links {
            display: flex;
            list-style: none;
            gap: 1.8rem;
            margin: 0;
            padding: 0;
            align-items: center;
        }
        .nav-links li a {
            font-size: 0.95rem;
            color: var(--text-light);
            font-weight: 500;
            text-decoration: none;
            padding: 0.3rem 0;
            position: relative;
            transition: color var(--transition);
        }
        .nav-links li a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--primary-gradient);
            border-radius: 2px;
            transition: width var(--transition);
        }
        .nav-links li a:hover {
            color: #fff;
        }
        .nav-links li a:hover::after {
            width: 100%;
        }
        .nav-links li a.active {
            color: #fff;
        }
        .nav-links li a.active::after {
            width: 100%;
        }
        .nav-right {
            display: flex;
            align-items: center;
            gap: 1rem;
            flex-shrink: 0;
        }
        .search-box {
            display: flex;
            align-items: center;
            background: var(--input-bg);
            border: 1px solid var(--input-border);
            border-radius: 30px;
            padding: 0.35rem 0.9rem;
            transition: border var(--transition), box-shadow var(--transition);
            width: 180px;
        }
        .search-box i {
            color: var(--text-muted);
            font-size: 0.85rem;
            margin-right: 0.5rem;
        }
        .search-box input {
            background: transparent;
            border: none;
            outline: none;
            color: var(--text-white);
            font-size: 0.85rem;
            width: 100%;
        }
        .search-box input::placeholder {
            color: var(--text-muted);
        }
        .search-box:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(108, 99, 255, 0.15);
        }
        .btn-outline-nav {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.25);
            color: var(--text-white);
            padding: 0.45rem 1.2rem;
            border-radius: 30px;
            font-size: 0.85rem;
            font-weight: 600;
            transition: all var(--transition);
            white-space: nowrap;
            cursor: pointer;
        }
        .btn-outline-nav:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(255, 255, 255, 0.5);
        }
        .btn-cta-nav {
            background: var(--primary-gradient);
            border: none;
            color: #fff;
            padding: 0.5rem 1.5rem;
            border-radius: 30px;
            font-size: 0.85rem;
            font-weight: 700;
            transition: all var(--transition);
            box-shadow: 0 4px 20px rgba(108, 99, 255, 0.35);
            white-space: nowrap;
            cursor: pointer;
        }
        .btn-cta-nav:hover {
            box-shadow: 0 6px 30px rgba(108, 99, 255, 0.55);
            transform: translateY(-1px);
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: var(--text-white);
            font-size: 1.5rem;
            cursor: pointer;
            padding: 0.25rem;
        }
        @media (max-width: 992px) {
            .nav-links {
                display: none;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background: rgba(10, 15, 31, 0.97);
                backdrop-filter: blur(20px);
                flex-direction: column;
                gap: 0;
                padding: 1rem 0;
                border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links li {
                width: 100%;
                text-align: center;
            }
            .nav-links li a {
                display: block;
                padding: 0.9rem 1.5rem;
                font-size: 1.05rem;
            }
            .nav-links li a::after {
                display: none;
            }
            .nav-right {
                display: none;
            }
            .nav-right.open {
                display: flex;
                flex-direction: column;
                width: 100%;
                padding: 1rem 1.5rem 1.5rem;
                background: rgba(10, 15, 31, 0.97);
                position: absolute;
                top: calc(70px + 260px);
                left: 0;
                border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            }
            .nav-right.open .search-box {
                width: 100%;
                margin-bottom: 0.75rem;
            }
            .nav-right.open .btn-outline-nav,
            .nav-right.open .btn-cta-nav {
                width: 100%;
                text-align: center;
            }
            .hamburger {
                display: block;
            }
        }

        /* ===== Hero ===== */
        .hero-enterprise {
            position: relative;
            min-height: 85vh;
            display: flex;
            align-items: center;
            padding-top: 70px;
            background: linear-gradient(135deg, #0A0F1F 0%, #141B2D 40%, #0F1A2E 100%);
            overflow: hidden;
        }
        .hero-enterprise::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.25;
            mix-blend-mode: overlay;
        }
        .hero-enterprise .bg-glow {
            position: absolute;
            width: 600px;
            height: 600px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(108, 99, 255, 0.12), transparent 70%);
            top: -10%;
            right: -5%;
            pointer-events: none;
        }
        .hero-enterprise .bg-glow-2 {
            position: absolute;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(0, 212, 255, 0.08), transparent 70%);
            bottom: -5%;
            left: -5%;
            pointer-events: none;
        }
        .hero-enterprise .container {
            position: relative;
            z-index: 2;
        }
        .hero-enterprise .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: rgba(108, 99, 255, 0.15);
            border: 1px solid rgba(108, 99, 255, 0.25);
            padding: 0.4rem 1.1rem;
            border-radius: 30px;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--primary-light);
            margin-bottom: 1.5rem;
            backdrop-filter: blur(4px);
        }
        .hero-enterprise .hero-badge i {
            font-size: 0.7rem;
        }
        .hero-enterprise h1 {
            font-size: clamp(2.2rem, 5.5vw, 3.5rem);
            font-weight: 800;
            line-height: 1.15;
            margin-bottom: 1.2rem;
        }
        .hero-enterprise h1 .highlight {
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-enterprise .hero-desc {
            font-size: 1.1rem;
            color: var(--text-muted);
            max-width: 540px;
            margin-bottom: 2rem;
            line-height: 1.7;
        }
        .hero-enterprise .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            align-items: center;
        }
        .hero-enterprise .btn-primary-glow {
            background: var(--primary-gradient);
            border: none;
            color: #fff;
            padding: 0.8rem 2.2rem;
            border-radius: 40px;
            font-size: 1rem;
            font-weight: 700;
            box-shadow: 0 6px 30px rgba(108, 99, 255, 0.4);
            transition: all var(--transition);
            cursor: pointer;
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        .hero-enterprise .btn-primary-glow:hover {
            box-shadow: 0 8px 45px rgba(108, 99, 255, 0.6);
            transform: translateY(-2px);
            color: #fff;
        }
        .hero-enterprise .btn-outline-glow {
            background: transparent;
            border: 1.5px solid rgba(255, 255, 255, 0.25);
            color: var(--text-white);
            padding: 0.8rem 2rem;
            border-radius: 40px;
            font-size: 1rem;
            font-weight: 600;
            transition: all var(--transition);
            cursor: pointer;
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        .hero-enterprise .btn-outline-glow:hover {
            background: rgba(255, 255, 255, 0.06);
            border-color: rgba(255, 255, 255, 0.5);
            color: #fff;
        }
        .hero-enterprise .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 2.5rem;
            margin-top: 3rem;
            padding-top: 2rem;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }
        .hero-enterprise .hero-stats .stat-item {
            text-align: left;
        }
        .hero-enterprise .hero-stats .stat-number {
            font-size: 1.8rem;
            font-weight: 800;
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.2;
        }
        .hero-enterprise .hero-stats .stat-label {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-top: 0.15rem;
        }
        @media (max-width: 768px) {
            .hero-enterprise {
                min-height: 70vh;
                text-align: center;
            }
            .hero-enterprise .hero-desc {
                margin-left: auto;
                margin-right: auto;
            }
            .hero-enterprise .hero-actions {
                justify-content: center;
            }
            .hero-enterprise .hero-stats {
                justify-content: center;
                gap: 1.5rem;
            }
            .hero-enterprise .hero-stats .stat-item {
                text-align: center;
                flex: 1 0 40%;
            }
        }

        /* ===== 核心优势 ===== */
        .features-enterprise {
            background: var(--bg-dark-alt);
        }
        .feature-card {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-lg);
            padding: 2rem 1.8rem;
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            transition: all var(--transition);
            height: 100%;
            position: relative;
            overflow: hidden;
        }
        .feature-card::before {
            content: '';
            position: absolute;
            inset: 0;
            border-radius: var(--radius-lg);
            padding: 1px;
            background: linear-gradient(135deg, transparent 40%, rgba(108, 99, 255, 0.15), transparent 70%);
            mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
            mask-composite: exclude;
            -webkit-mask-composite: xor;
            pointer-events: none;
            opacity: 0;
            transition: opacity var(--transition);
        }
        .feature-card:hover {
            transform: translateY(-6px);
            border-color: rgba(108, 99, 255, 0.2);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
        }
        .feature-card:hover::before {
            opacity: 1;
        }
        .feature-card .icon-box {
            width: 54px;
            height: 54px;
            border-radius: 16px;
            background: rgba(108, 99, 255, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--primary);
            margin-bottom: 1.3rem;
        }
        .feature-card h3 {
            font-size: 1.2rem;
            margin-bottom: 0.6rem;
        }
        .feature-card p {
            font-size: 0.92rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        /* ===== 适用场景 ===== */
        .scenarios-enterprise {
            background: var(--bg-dark);
        }
        .scenario-card {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all var(--transition);
            height: 100%;
        }
        .scenario-card:hover {
            transform: translateY(-4px);
            border-color: rgba(108, 99, 255, 0.2);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
        }
        .scenario-card .scenario-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            display: block;
        }
        .scenario-card .scenario-body {
            padding: 1.5rem 1.5rem 1.8rem;
        }
        .scenario-card .scenario-body .tag {
            display: inline-block;
            font-size: 0.7rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 1px;
            background: rgba(108, 99, 255, 0.15);
            color: var(--primary-light);
            padding: 0.2rem 0.8rem;
            border-radius: 20px;
            margin-bottom: 0.6rem;
        }
        .scenario-card .scenario-body h3 {
            font-size: 1.15rem;
            margin-bottom: 0.5rem;
        }
        .scenario-card .scenario-body p {
            font-size: 0.88rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        /* ===== 服务流程 ===== */
        .process-enterprise {
            background: var(--bg-dark-alt);
        }
        .process-step {
            text-align: center;
            padding: 1.5rem 1rem;
            position: relative;
        }
        .process-step .step-number {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: var(--primary-gradient);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            font-weight: 800;
            color: #fff;
            margin: 0 auto 1rem;
            box-shadow: 0 4px 20px rgba(108, 99, 255, 0.3);
        }
        .process-step h4 {
            font-size: 1.05rem;
            margin-bottom: 0.3rem;
        }
        .process-step p {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }
        .process-connector {
            display: none;
        }
        @media (min-width: 768px) {
            .process-connector {
                display: block;
                position: absolute;
                top: 25px;
                right: -15%;
                width: 30%;
                height: 2px;
                background: linear-gradient(90deg, var(--primary), transparent);
                opacity: 0.3;
            }
            .process-step:last-child .process-connector {
                display: none;
            }
        }

        /* ===== 数据统计 ===== */
        .stats-enterprise {
            background: var(--bg-dark);
            position: relative;
        }
        .stats-enterprise::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
            opacity: 0.06;
            mix-blend-mode: overlay;
        }
        .stats-enterprise .container {
            position: relative;
            z-index: 1;
        }
        .stat-block {
            text-align: center;
            padding: 1.5rem;
        }
        .stat-block .stat-icon {
            font-size: 2rem;
            color: var(--primary);
            margin-bottom: 0.75rem;
        }
        .stat-block .stat-number {
            font-size: 2.6rem;
            font-weight: 800;
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.2;
        }
        .stat-block .stat-label {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-top: 0.25rem;
        }

        /* ===== FAQ ===== */
        .faq-enterprise {
            background: var(--bg-dark-alt);
        }
        .accordion-custom {
            max-width: 800px;
            margin: 0 auto;
        }
        .accordion-custom .accordion-item {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-md) !important;
            margin-bottom: 0.8rem;
            overflow: hidden;
        }
        .accordion-custom .accordion-header {
            background: transparent;
            border: none;
        }
        .accordion-custom .accordion-button {
            background: transparent;
            color: var(--text-white);
            font-size: 1rem;
            font-weight: 600;
            padding: 1.2rem 1.5rem;
            box-shadow: none;
            border: none;
            transition: color var(--transition);
        }
        .accordion-custom .accordion-button:not(.collapsed) {
            color: var(--primary-light);
            background: transparent;
        }
        .accordion-custom .accordion-button::after {
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%238892B0'%3E%3Cpath d='M8 4a.5.5 0 0 1 .5.5v3h3a.5.5 0 0 1 0 1h-3v3a.5.5 0 0 1-1 0v-3h-3a.5.5 0 0 1 0-1h3v-3A.5.5 0 0 1 8 4z'/%3E%3C/svg%3E");
            transition: transform var(--transition);
        }
        .accordion-custom .accordion-button:not(.collapsed)::after {
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%236C63FF'%3E%3Cpath d='M4 8a.5.5 0 0 1 .5-.5h7a.5.5 0 0 1 0 1h-7A.5.5 0 0 1 4 8z'/%3E%3C/svg%3E");
            transform: rotate(0deg);
        }
        .accordion-custom .accordion-body {
            padding: 0 1.5rem 1.2rem;
            color: var(--text-muted);
            font-size: 0.92rem;
            line-height: 1.7;
        }

        /* ===== CTA ===== */
        .cta-enterprise {
            background: var(--bg-dark);
            position: relative;
            overflow: hidden;
        }
        .cta-enterprise::before {
            content: '';
            position: absolute;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(108, 99, 255, 0.08), transparent 70%);
            top: -20%;
            right: -10%;
            pointer-events: none;
        }
        .cta-enterprise .cta-box {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-xl);
            padding: 3.5rem 3rem;
            backdrop-filter: blur(16px);
            text-align: center;
            position: relative;
            z-index: 1;
        }
        .cta-enterprise .cta-box h2 {
            margin-bottom: 0.75rem;
        }
        .cta-enterprise .cta-box p {
            max-width: 540px;
            margin: 0 auto 2rem;
            font-size: 1rem;
        }
        .cta-enterprise .cta-box .cta-actions {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 1rem;
        }
        .cta-enterprise .cta-box .btn-cta-big {
            background: var(--primary-gradient);
            border: none;
            color: #fff;
            padding: 0.9rem 2.5rem;
            border-radius: 40px;
            font-size: 1.05rem;
            font-weight: 700;
            box-shadow: 0 6px 30px rgba(108, 99, 255, 0.4);
            transition: all var(--transition);
            cursor: pointer;
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        .cta-enterprise .cta-box .btn-cta-big:hover {
            box-shadow: 0 8px 45px rgba(108, 99, 255, 0.6);
            transform: translateY(-2px);
            color: #fff;
        }
        .cta-enterprise .cta-box .btn-cta-outline {
            background: transparent;
            border: 1.5px solid rgba(255, 255, 255, 0.2);
            color: var(--text-white);
            padding: 0.9rem 2.2rem;
            border-radius: 40px;
            font-size: 1rem;
            font-weight: 600;
            transition: all var(--transition);
            cursor: pointer;
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        .cta-enterprise .cta-box .btn-cta-outline:hover {
            background: rgba(255, 255, 255, 0.06);
            border-color: rgba(255, 255, 255, 0.4);
            color: #fff;
        }
        @media (max-width: 576px) {
            .cta-enterprise .cta-box {
                padding: 2rem 1.5rem;
            }
            .cta-enterprise .cta-box .cta-actions {
                flex-direction: column;
            }
            .cta-enterprise .cta-box .btn-cta-big,
            .cta-enterprise .cta-box .btn-cta-outline {
                width: 100%;
                justify-content: center;
            }
        }

        /* ===== 页脚 ===== */
        .footer {
            background: #0A0F1F;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding: 3.5rem 0 0;
        }
        .footer .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr;
            gap: 2.5rem;
            margin-bottom: 2rem;
        }
        .footer .footer-brand .logo {
            font-size: 1.3rem;
            font-weight: 800;
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 0.8rem;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .footer .footer-brand .logo i {
            font-size: 1.1rem;
        }
        .footer .footer-brand p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 360px;
        }
        .footer .footer-social {
            display: flex;
            gap: 0.8rem;
            margin-top: 1rem;
        }
        .footer .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(--text-muted);
            font-size: 0.95rem;
            transition: all var(--transition);
            text-decoration: none;
        }
        .footer .footer-social a:hover {
            background: rgba(108, 99, 255, 0.2);
            color: var(--primary-light);
            transform: translateY(-2px);
        }
        .footer .footer-links h5 {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 1rem;
            letter-spacing: 0.5px;
        }
        .footer .footer-links ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer .footer-links ul li {
            margin-bottom: 0.4rem;
        }
        .footer .footer-links ul li a {
            font-size: 0.85rem;
            color: var(--text-muted);
            text-decoration: none;
            transition: color var(--transition);
        }
        .footer .footer-links ul li a:hover {
            color: var(--primary-light);
        }
        .footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding: 1.5rem 0;
            text-align: center;
        }
        .footer .footer-bottom p {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin: 0;
        }
        .footer .footer-bottom a {
            color: var(--text-muted);
            text-decoration: underline;
        }
        .footer .footer-bottom a:hover {
            color: var(--primary-light);
        }
        @media (max-width: 768px) {
            .footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
            .footer .footer-brand p {
                max-width: 100%;
            }
        }

        /* ===== 工具类 ===== */
        .text-gradient {
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .mb-gap {
            margin-bottom: 1.5rem;
        }
        .glass-card {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-lg);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
        }
        .gap-section {
            gap: 2rem 1.5rem;
        }
        .btn:focus,
        .form-control:focus {
            box-shadow: 0 0 0 3px rgba(108, 99, 255, 0.2);
        }