/* roulang page: index */
:root {
    --bg-primary:#0A0F1E;
    --bg-secondary:#0B132B;
    --bg-deep:#050810;
    --primary:#00B4FF;
    --primary-hover:#0090D6;
    --accent:#00F5C8;
    --gold:#F5B82E;
    --gold-light:#FFD166;
    --text-primary:#E2E8F0;
    --text-secondary:#94A3B8;
    --text-muted:#64748B;
    --glass-bg:rgba(255,255,255,0.04);
    --glass-bg-hover:rgba(255,255,255,0.08);
    --glass-border:rgba(255,255,255,0.08);
    --primary-glow:rgba(0,180,255,0.4);
    --gold-glow:rgba(245,184,46,0.35);
    --radius-lg:16px;
    --radius-md:12px;
    --radius-sm:8px;
  }
  *{box-sizing:border-box;margin:0;padding:0}
  html{scroll-behavior:smooth}
  body{
    font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",system-ui,sans-serif;
    background-color:var(--bg-primary);
    color:var(--text-primary);
    line-height:1.75;
    font-size:16px;
    -webkit-font-smoothing:antialiased;
  }
  a{text-decoration:none;color:inherit}
  img{max-width:100%;display:block}
  button{font-family:inherit;cursor:pointer}
  .container{max-width:1280px;margin:0 auto;padding:0 16px}
  ::selection{background:rgba(0,180,255,0.3)}
  /* 头部导航结构 */
  .site-header{
    position:fixed;top:0;left:0;right:0;height:64px;z-index:1000;
    background:rgba(5,8,16,0.85);
    backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
  }
  .site-header::after{
    content:'';position:absolute;bottom:-1px;left:0;right:0;height:1px;
    background:linear-gradient(90deg,transparent,rgba(0,180,255,0.6),rgba(245,184,46,0.6),transparent);
  }
  .logo-area{display:flex;align-items:center;gap:10px}
  .logo-icon{
    width:38px;height:38px;border-radius:10px;display:flex;align-items:center;justify-content:center;
    background:linear-gradient(135deg,var(--primary),var(--accent));
    font-family:"Barlow Condensed","Oswald",sans-serif;font-weight:700;font-size:14px;color:#0A0F1E;
    box-shadow:0 0 18px rgba(0,180,255,0.35);
  }
  .logo-text{font-size:22px;font-weight:700;color:#fff;letter-spacing:1px}
  .logo-vii{
    color:var(--gold-light);font-family:"Barlow Condensed","Oswald",sans-serif;font-weight:700;
    text-shadow:0 0 12px rgba(245,184,46,0.4);
  }
  .nav-links{display:flex;align-items:center;gap:32px}
  .nav-link{
    color:#CBD5E1;font-size:14px;font-weight:500;padding:20px 2px;position:relative;
    transition:color 0.3s;white-space:nowrap;
  }
  .nav-link:hover{color:#fff}
  .nav-link.active{color:#fff}
  .nav-link.active::after{
    content:'';position:absolute;bottom:8px;left:0;right:0;height:2px;
    background:var(--gold);border-radius:2px;box-shadow:0 0 10px var(--gold-glow);
  }
  /* 按钮体系 */
  .btn-primary{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    background:linear-gradient(120deg,#00B4FF 0%,#0078FF 75%,#F5B82E 100%);
    color:#fff;font-weight:600;border-radius:12px;padding:12px 28px;
    box-shadow:0 0 30px rgba(0,180,255,0.4);transition:all 0.3s;
    text-decoration:none;border:none;cursor:pointer;line-height:1.4;
  }
  .btn-primary:hover{filter:brightness(1.12);transform:translateY(-1px);box-shadow:0 0 44px rgba(0,180,255,0.55)}
  .btn-primary:active{transform:scale(0.97)}
  .btn-secondary{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    background:rgba(255,255,255,0.06);color:#E2E8F0;font-weight:600;
    border:1px solid rgba(255,255,255,0.15);border-radius:12px;padding:12px 28px;
    transition:all 0.3s;text-decoration:none;cursor:pointer;line-height:1.4;
  }
  .btn-secondary:hover{border-color:var(--primary);background:rgba(255,255,255,0.1);color:#fff}
  .btn-secondary:active{transform:scale(0.97)}
  .btn-sm{padding:8px 20px;font-size:14px;border-radius:10px}
  .btn-lg{padding:14px 36px;font-size:16px;border-radius:14px}
  .btn-gold{
    background:linear-gradient(135deg,var(--gold-light),var(--gold));color:#0A0F1E;
    font-weight:700;box-shadow:0 0 24px rgba(245,184,46,0.3);
  }
  .btn-gold:hover{filter:brightness(1.1);box-shadow:0 0 32px rgba(245,184,46,0.45)}
  /* 玻璃卡片 */
  .glass-card{
    background:var(--glass-bg);border:1px solid var(--glass-border);
    border-radius:var(--radius-lg);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
    box-shadow:0 8px 40px rgba(0,0,0,0.35);transition:all 0.3s ease;
  }
  .glass-card:hover{
    background:var(--glass-bg-hover);transform:translateY(-6px);
    box-shadow:0 16px 60px rgba(0,180,255,0.2);border-color:rgba(0,180,255,0.35);
  }
  /* Hero */
  .hero{
    min-height:100vh;display:flex;align-items:center;position:relative;
    background-image:linear-gradient(to bottom,rgba(10,15,30,0.82),rgba(10,15,30,0.55),rgba(10,15,30,1)),url('/assets/images/backpic/back-2.webp');
    background-size:cover;background-position:center;padding-top:64px;
  }
  .hero .container{position:relative;z-index:2;padding-top:48px;padding-bottom:48px}
  .hero-title{
    font-size:56px;line-height:1.15;font-weight:700;color:#fff;max-width:760px;margin-bottom:24px;
  }
  .hero-gold{
    background:linear-gradient(90deg,var(--gold-light),var(--gold));
    -webkit-background-clip:text;background-clip:text;color:transparent;
  }
  .hero-subtitle{
    font-size:18px;color:#CBD5E1;max-width:640px;line-height:1.7;margin-bottom:36px;
  }
  .trust-indicators{
    display:flex;flex-wrap:wrap;gap:16px;margin-top:40px;
  }
  .trust-pill{
    display:inline-flex;align-items:center;gap:8px;
    background:rgba(255,255,255,0.06);border:1px solid rgba(255,255,255,0.1);
    border-radius:50px;padding:8px 18px;font-size:14px;color:#E2E8F0;
  }
  .trust-pill strong{color:var(--gold-light);font-variant-numeric:tabular-nums;font-size:16px}
  /* 区块通用 */
  .section{padding:80px 0}
  .section-title{
    font-size:32px;font-weight:700;color:#fff;line-height:1.3;margin-bottom:12px;
  }
  .section-subtitle{
    font-size:16px;color:var(--text-secondary);max-width:640px;line-height:1.7;
  }
  .badge-pill{
    display:inline-block;padding:4px 14px;border-radius:50px;font-size:12px;font-weight:600;
    background:rgba(245,184,46,0.15);border:1px solid rgba(245,184,46,0.35);color:var(--gold-light);
    letter-spacing:1px;
  }
  /* 信任数字条 */
  .stat-card{
    text-align:center;padding:32px 24px;
  }
  .stat-number{
    font-size:40px;font-weight:700;color:var(--gold-light);
    font-variant-numeric:tabular-nums;font-family:"Barlow Condensed","Oswald",sans-serif;
    line-height:1.2;
  }
  .stat-label{font-size:14px;color:var(--text-secondary);margin-top:8px}
  /* 卖点卡片 */
  .feature-card{padding:32px 28px;height:100%;display:flex;flex-direction:column}
  .feature-icon{
    width:52px;height:52px;border-radius:14px;display:flex;align-items:center;justify-content:center;
    background:linear-gradient(135deg,rgba(0,180,255,0.2),rgba(0,245,200,0.1));
    border:1px solid rgba(0,180,255,0.3);color:var(--primary);font-size:20px;margin-bottom:20px;
  }
  .feature-title{font-size:20px;font-weight:600;color:#fff;margin-bottom:12px}
  .feature-desc{font-size:15px;color:var(--text-secondary);line-height:1.7;flex:1;margin-bottom:16px}
  .feature-link{font-size:14px;color:var(--primary);display:inline-flex;align-items:center;gap:6px;transition:gap 0.3s}
  .feature-link:hover{gap:10px}
  /* 场景演示 */
  .scene-block{padding:60px 0}
  .scene-tag{color:var(--gold-light);font-size:13px;font-weight:600;letter-spacing:1px;margin-bottom:12px}
  .scene-title{font-size:28px;font-weight:700;color:#fff;line-height:1.3;margin-bottom:16px}
  .scene-desc{font-size:16px;color:var(--text-secondary);line-height:1.75;margin-bottom:24px}
  .scene-list{list-style:none;padding:0;margin:0}
  .scene-list li{
    display:flex;align-items:flex-start;gap:10px;padding:6px 0;
    font-size:15px;color:#CBD5E1;line-height:1.6;
  }
  .scene-list li i{color:var(--gold);font-size:14px;margin-top:5px}
  .scene-image{
    border-radius:24px;overflow:hidden;position:relative;
    border:1px solid rgba(255,255,255,0.08);
    box-shadow:0 20px 60px rgba(0,0,0,0.4);
  }
  .scene-image::after{
    content:'';position:absolute;inset:0;
    background:linear-gradient(180deg,transparent,rgba(0,180,255,0.08));
    pointer-events:none;
  }
  .scene-image img{width:100%;height:100%;object-fit:cover}
  /* 社会认同 */
  .testimonial-card{
    padding:32px 28px;position:relative;height:100%;display:flex;flex-direction:column;
  }
  .testimonial-card .quote-mark{
    position:absolute;top:16px;right:24px;font-size:64px;color:rgba(245,184,46,0.18);
    font-family:Georgia,serif;line-height:1;
  }
  .testimonial-stars{display:flex;gap:4px;color:var(--gold-light);font-size:14px;margin-bottom:16px}
  .testimonial-text{font-size:15px;color:#CBD5E1;line-height:1.75;flex:1;margin-bottom:24px}
  .testimonial-author{display:flex;align-items:center;gap:12px}
  .testimonial-avatar{
    width:40px;height:40px;border-radius:50%;object-fit:cover;
    background:linear-gradient(135deg,rgba(0,180,255,0.3),rgba(245,184,46,0.2));
    display:flex;align-items:center;justify-content:center;color:#fff;font-size:16px;font-weight:600;
  }
  .testimonial-name{font-size:14px;color:#fff;font-weight:600}
  .testimonial-role{font-size:12px;color:var(--text-muted)}
  /* 最新资讯 */
  .news-list{display:flex;flex-direction:column;gap:16px}
  .news-card{
    display:flex;flex-direction:column;gap:16px;padding:20px;border-radius:var(--radius-lg);
    background:var(--glass-bg);border:1px solid var(--glass-border);transition:all 0.3s;
  }
  @media(min-width:640px){
    .news-card{flex-direction:row;align-items:center}
  }
  .news-card:hover{background:rgba(255,255,255,0.06);transform:translateY(-3px);box-shadow:0 12px 40px rgba(0,180,255,0.15)}
  .news-thumb{
    width:96px;height:96px;border-radius:12px;overflow:hidden;flex-shrink:0;
    background:linear-gradient(135deg,rgba(0,180,255,0.15),rgba(0,245,200,0.05));
    display:flex;align-items:center;justify-content:center;
  }
  .news-thumb img{width:100%;height:100%;object-fit:cover}
  .news-body{flex:1;min-width:0}
  .news-title{font-size:18px;font-weight:600;color:#fff;margin-bottom:6px;overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical}
  .news-summary{font-size:14px;color:var(--text-secondary);line-height:1.6;overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;margin-bottom:10px}
  .news-meta{display:flex;align-items:center;gap:12px;font-size:13px;color:var(--text-muted)}
  .news-cat{
    display:inline-block;padding:2px 12px;border-radius:50px;font-size:12px;
    background:rgba(245,184,46,0.12);border:1px solid rgba(245,184,46,0.25);color:var(--gold-light);
  }
  .news-arrow{color:var(--primary);font-size:14px;transition:transform 0.3s;margin-left:auto}
  .news-card:hover .news-arrow{transform:translateX(4px)}
  .news-empty{
    padding:48px 24px;text-align:center;border:1px dashed rgba(255,255,255,0.15);
    border-radius:var(--radius-lg);color:var(--text-secondary);font-size:15px;background:rgba(255,255,255,0.02);
  }
  .news-empty i{font-size:28px;display:block;margin-bottom:12px;color:var(--text-muted)}
  /* FAQ */
  .faq-item{
    background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:var(--radius-lg);
    margin-bottom:12px;transition:border-color 0.3s,background 0.3s;
  }
  .faq-item.active{border-color:rgba(245,184,46,0.4);background:rgba(255,255,255,0.06)}
  .faq-question{
    display:flex;align-items:center;justify-content:space-between;padding:20px 24px;
    font-size:16px;font-weight:600;color:#fff;cursor:pointer;user-select:none;
  }
  .faq-icon{
    width:28px;height:28px;border-radius:50%;display:flex;align-items:center;justify-content:center;
    background:rgba(245,184,46,0.15);color:var(--gold-light);font-size:14px;flex-shrink:0;
    transition:transform 0.3s;
  }
  .faq-item.active .faq-icon{transform:rotate(45deg)}
  .faq-answer{
    max-height:0;overflow:hidden;transition:max-height 0.4s ease,padding 0.3s;
    font-size:15px;color:var(--text-secondary);line-height:1.75;padding:0 24px;
  }
  .faq-item.active .faq-answer{
    max-height:500px;padding-bottom:20px;padding-top:4px;
  }
  /* CTA */
  .cta-section{
    position:relative;
    background-image:linear-gradient(to bottom,rgba(5,8,16,0.9),rgba(5,8,16,0.75)),url('/assets/images/backpic/back-1.png');
    background-size:cover;background-position:center;padding:80px 0;
  }
  .cta-section::before,.cta-section::after{
    content:'';display:block;height:1px;
    background:linear-gradient(90deg,transparent,rgba(0,180,255,0.4),transparent);
  }
  .cta-section::after{
    background:linear-gradient(90deg,transparent,rgba(245,184,46,0.4),transparent);
  }
  .cta-title{font-size:36px;font-weight:700;color:#fff;line-height:1.3;margin-bottom:16px}
  .cta-desc{font-size:16px;color:#CBD5E1;max-width:560px;margin:0 auto 32px}
  /* 页脚 */
  .site-footer{background:var(--bg-deep);border-top:1px solid rgba(255,255,255,0.08);padding:64px 0 0}
  .footer-grid{display:grid;grid-template-columns:1fr;gap:40px}
  @media(min-width:768px){
    .footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:32px}
  }
  .footer-logo{font-size:24px;font-weight:700;color:#fff;margin-bottom:16px}
  .footer-desc{font-size:14px;color:var(--text-muted);line-height:1.7;margin-bottom:20px}
  .social-icons{display:flex;gap:10px}
  .social-icons a{
    width:36px;height:36px;border-radius:10px;display:flex;align-items:center;justify-content:center;
    background:rgba(255,255,255,0.06);color:var(--text-secondary);font-size:14px;transition:all 0.3s;
  }
  .social-icons a:hover{background:rgba(0,180,255,0.2);color:#fff}
  .footer-title{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px}
  .footer-links{list-style:none;padding:0;margin:0}
  .footer-links li{margin-bottom:10px}
  .footer-links a{font-size:14px;color:var(--text-muted);transition:color 0.3s}
  .footer-links a:hover{color:var(--primary)}
  .footer-contact{list-style:none;padding:0;margin:0;font-size:14px;color:var(--text-muted)}
  .footer-contact li{display:flex;align-items:flex-start;gap:10px;margin-bottom:12px}
  .footer-contact i{color:var(--gold-light);margin-top:4px}
  .footer-bottom{
    margin-top:48px;padding:20px 0;border-top:1px solid rgba(255,255,255,0.06);
    display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;
    font-size:13px;color:var(--text-muted);
  }
  /* 底部固定转化条 */
  .fixed-cta{
    position:fixed;bottom:16px;left:50%;transform:translateX(-50%);
    width:640px;max-width:calc(100vw - 32px);height:56px;z-index:998;
    display:flex;align-items:center;justify-content:space-between;gap:16px;
    background:rgba(5,8,16,0.92);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
    border:1px solid rgba(245,184,46,0.25);border-radius:50px;padding:8px 10px 8px 24px;
    box-shadow:0 0 30px rgba(245,184,46,0.12),0 8px 32px rgba(0,0,0,0.4);
  }
  .fixed-cta span{font-size:14px;color:#fff;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
  .fixed-cta .btn-primary{padding:8px 24px;font-size:14px;border-radius:50px;white-space:nowrap}
  @media(max-width:640px){
    .fixed-cta{
      width:100%;max-width:100%;bottom:0;left:0;right:0;transform:none;
      border-radius:12px 12px 0 0;border-left:none;border-right:none;border-bottom:none;
      padding:8px 16px;
    }
    body{padding-bottom:64px}
  }
  /* 移动端菜单 */
  .mobile-menu{
    position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(5,8,16,0.97);
    z-index:999;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:28px;
    opacity:0;visibility:hidden;transition:opacity 0.3s,visibility 0.3s;
  }
  .mobile-menu.open{opacity:1;visibility:visible}
  .mobile-menu a{font-size:20px;color:#E2E8F0;font-weight:500}
  .mobile-menu a:hover{color:var(--gold-light)}
  .mobile-menu .close-btn{
    position:absolute;top:20px;right:20px;width:40px;height:40px;border-radius:10px;
    background:rgba(255,255,255,0.06);border:1px solid rgba(255,255,255,0.1);
    color:#fff;font-size:18px;display:flex;align-items:center;justify-content:center;
  }
  .mobile-toggle{
    width:40px;height:40px;border-radius:10px;
    background:rgba(255,255,255,0.06);border:1px solid rgba(255,255,255,0.1);
    color:#fff;font-size:16px;display:flex;align-items:center;justify-content:center;
  }
  /* 背景光晕 */
  .glow-orb{position:fixed;border-radius:50%;filter:blur(120px);pointer-events:none;z-index:0;opacity:0.12}
  .glow-top{width:600px;height:600px;top:-200px;left:-200px;background:var(--primary)}
  .glow-bottom{width:500px;height:500px;bottom:-150px;right:-150px;background:var(--gold)}
  /* 分页预留 */
  .pagination{display:flex;justify-content:center;gap:8px;margin-top:40px}
  .pagination a,.pagination span{
    padding:8px 16px;border-radius:8px;font-size:14px;
    background:rgba(255,255,255,0.04);border:1px solid rgba(255,255,255,0.08);
    transition:all 0.3s;
  }
  .pagination a:hover{border-color:var(--primary);color:var(--primary)}
  .pagination .active{background:linear-gradient(135deg,var(--gold-light),var(--gold));color:#0A0F1E;border:none;font-weight:600}
  /* focus */
  a:focus-visible,button:focus-visible{
    outline:2px solid var(--primary);outline-offset:2px;border-radius:4px;
  }
  /* 响应式 */
  @media(max-width:768px){
    .hero-title{font-size:36px;line-height:1.2}
    .hero-subtitle{font-size:16px}
    .section-title{font-size:26px}
    .section{padding:60px 0}
    .scene-title{font-size:24px}
    .cta-title{font-size:28px}
    .fixed-cta span{font-size:13px;max-width:50%}
  }
  @media(max-width:520px){
    .hero-title{font-size:28px}
    .hero-subtitle{font-size:15px}
    .stat-number{font-size:32px}
    .btn-lg{padding:12px 24px;font-size:15px}
  }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
:root {
  --bg-deep: #0A0F1E;
  --bg-dark: #0B132B;
  --bg-darker: #050810;
  --primary: #00B4FF;
  --primary-hover: #0090D6;
  --secondary: #00F5C8;
  --gold: #F5B82E;
  --gold-light: #FFD166;
  --gold-dark: #D99A1B;
  --text-main: #E2E8F0;
  --text-sub: #94A3B8;
  --text-weak: #64748B;
  --border-light: rgba(255,255,255,0.08);
  --border-primary: rgba(0,180,255,0.35);
  --border-gold: rgba(245,184,46,0.4);
  --card-bg: rgba(255,255,255,0.04);
  --card-bg-hover: rgba(255,255,255,0.08);
  --glow-primary: rgba(0,180,255,0.4);
  --glow-gold: rgba(245,184,46,0.35);
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --font-family: "PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",system-ui,sans-serif;
  --font-num: "Barlow Condensed","Oswald","DIN Alternate",sans-serif;
}

/* ===== 基础 Reset ===== */
*,*::before,*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: var(--font-family);
  background-color: var(--bg-deep);
  color: var(--text-main);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a {
  color: inherit;
  text-decoration: none;
  transition: color 0.25s ease;
}
img {
  max-width: 100%;
  height: auto;
  display: block;
}
button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}
input, textarea, select {
  font-family: inherit;
}
ul, ol {
  list-style: none;
}
h1, h2, h3, h4, h5, h6 {
  line-height: 1.25;
  color: #fff;
}
.container {
  max-width: 1280px;
  width: 100%;
  margin-left: auto;
  margin-right: auto;
  padding-left: 16px;
  padding-right: 16px;
}
section {
  position: relative;
}
.fa-spin-fast {
  animation: fa-spin 0.8s infinite linear;
}

/* ===== 霓虹暗色导航 ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: 64px;
  background: rgba(5,8,16,0.85);
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid transparent;
  transition: background 0.3s ease;
}
.site-header::after {
  content: "";
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0,180,255,0.6), rgba(245,184,46,0.6), transparent);
}
.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: 16px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 22px;
  font-weight: 700;
  color: #fff;
  letter-spacing: 0.5px;
  flex-shrink: 0;
}
.logo-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), var(--gold));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 16px;
  box-shadow: 0 0 18px rgba(0,180,255,0.45);
}
.logo-roman {
  color: var(--gold-light);
  font-family: var(--font-num);
  font-weight: 700;
  letter-spacing: 1px;
}
.logo-text {
  color: #fff;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
}
.nav-link {
  position: relative;
  display: inline-block;
  padding: 8px 14px;
  font-size: 14px;
  font-weight: 500;
  color: #CBD5E1;
  border-radius: 8px;
  transition: color 0.25s, background 0.25s;
}
.nav-link:hover {
  color: #fff;
  background: rgba(255,255,255,0.05);
}
.nav-link.active {
  color: #fff;
  background: rgba(255,255,255,0.05);
}
.nav-link.active::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 14px;
  right: 14px;
  height: 2px;
  border-radius: 2px;
  background: var(--gold);
  box-shadow: 0 0 10px var(--gold), 0 0 20px rgba(245,184,46,0.5);
}
.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.nav-cta {
  font-size: 14px;
  padding: 9px 20px;
}
.nav-toggle {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 20px;
  border: 1px solid var(--border-light);
  border-radius: 10px;
  background: rgba(255,255,255,0.06);
  transition: border-color 0.3s;
}
.nav-toggle:hover {
  border-color: var(--border-primary);
}
/* 移动端菜单 */
.mobile-menu {
  position: fixed;
  top: 64px;
  left: 0;
  right: 0;
  background: rgba(5,8,16,0.97);
  -webkit-backdrop-filter: blur(24px);
  backdrop-filter: blur(24px);
  border-bottom: 1px solid var(--border-light);
  padding: 24px;
  z-index: 999;
  display: none;
  flex-direction: column;
  gap: 4px;
  box-shadow: 0 24px 60px rgba(0,0,0,0.6);
}
.mobile-menu.open {
  display: flex;
}
.mobile-link {
  display: block;
  padding: 14px 16px;
  font-size: 16px;
  color: var(--text-main);
  border-radius: 12px;
  transition: background 0.25s, color 0.25s;
}
.mobile-link:hover,
.mobile-link.active {
  background: rgba(255,255,255,0.07);
  color: #fff;
}
.mobile-link.active {
  border-left: 3px solid var(--gold);
  padding-left: 13px;
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 600;
  border-radius: var(--radius-md);
  padding: 12px 28px;
  font-size: 15px;
  line-height: 1.4;
  transition: all 0.3s ease;
  white-space: nowrap;
}
.btn:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
}
.btn:active {
  transform: scale(0.97) !important;
}
.btn-primary {
  background: linear-gradient(90deg, #00B4FF 0%, #0078FF 85%, #F5B82E 100%);
  color: #fff;
  border: none;
  box-shadow: 0 0 30px rgba(0,180,255,0.4);
}
.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 0 42px rgba(0,180,255,0.55);
  filter: brightness(1.08);
}
.btn-ghost {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.15);
  color: #E2E8F0;
}
.btn-ghost:hover {
  border-color: var(--primary);
  background: rgba(255,255,255,0.1);
  color: #fff;
}
.btn-lg {
  padding: 16px 42px;
  font-size: 16px;
  border-radius: 14px;
}
.btn-sm {
  padding: 8px 18px;
  font-size: 14px;
}

/* ===== Hero ===== */
.category-hero {
  min-height: 78vh;
  display: flex;
  align-items: center;
  padding: 120px 0 80px;
  background: linear-gradient(135deg, var(--bg-darker) 0%, var(--bg-deep) 45%, #0e1a2f 100%);
  overflow: hidden;
}
.category-hero::before {
  content: "";
  position: absolute;
  top: -20%;
  left: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(0,180,255,0.13), transparent 60%);
  pointer-events: none;
}
.category-hero::after {
  content: "";
  position: absolute;
  bottom: -30%;
  right: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(245,184,46,0.10), transparent 60%);
  pointer-events: none;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0.25;
  z-index: 0;
}
.hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(10,15,30,0.82), rgba(10,15,30,0.62), rgba(10,15,30,0.92));
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 900px;
}
.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,0.07);
  border: 1px solid rgba(245,184,46,0.35);
  color: var(--gold-light);
  font-size: 13px;
  font-weight: 500;
  padding: 6px 16px;
  border-radius: 999px;
  margin-bottom: 24px;
  letter-spacing: 1px;
}
.hero-title {
  font-size: 60px;
  font-weight: 700;
  line-height: 1.15;
  color: #fff;
  margin-bottom: 20px;
  background: linear-gradient(90deg, #fff 20%, var(--gold-light) 70%, var(--gold) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-subtitle {
  font-size: 19px;
  line-height: 1.7;
  color: #CBD5E1;
  max-width: 640px;
  margin-bottom: 36px;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 44px;
}
.hero-trust {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.trust-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border-light);
  border-radius: 999px;
  padding: 8px 18px;
  font-size: 14px;
  color: var(--text-sub);
}
.trust-tag strong {
  color: var(--gold-light);
  font-family: var(--font-num);
  font-weight: 700;
  font-size: 16px;
}

/* ===== 区块公用 ===== */
.section-pad {
  padding: 88px 0;
}
.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  color: var(--gold-light);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 12px;
}
.section-tag::before {
  content: "";
  width: 20px;
  height: 2px;
  background: linear-gradient(90deg, var(--gold), transparent);
  border-radius: 2px;
}
.section-title {
  font-size: 32px;
  font-weight: 700;
  line-height: 1.25;
  margin-bottom: 14px;
  color: #fff;
}
.section-desc {
  font-size: 16px;
  color: var(--text-sub);
  max-width: 620px;
  line-height: 1.7;
}
.section-head {
  margin-bottom: 48px;
  text-align: center;
}
.section-head .section-tag {
  justify-content: center;
}
.section-head .section-tag::before {
  width: 28px;
}
.section-head .section-desc {
  margin-left: auto;
  margin-right: auto;
}

/* ===== 信任数字条 ===== */
.stats-section {
  position: relative;
  background: var(--bg-dark);
  border-top: 1px solid var(--border-light);
  border-bottom: 1px solid var(--border-light);
  padding: 56px 0;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.stat-card {
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border-light);
  border-radius: 20px;
  padding: 32px 20px;
  text-align: center;
  transition: all 0.35s ease;
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
}
.stat-card:hover {
  background: rgba(255,255,255,0.07);
  border-color: rgba(0,180,255,0.35);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.3), 0 0 30px rgba(0,180,255,0.12);
}
.stat-num {
  font-size: 38px;
  font-family: var(--font-num);
  font-weight: 700;
  color: var(--gold-light);
  line-height: 1.1;
  margin-bottom: 8px;
  font-variant-numeric: tabular-nums;
}
.stat-label {
  font-size: 14px;
  color: var(--text-sub);
  letter-spacing: 1px;
}

/* ===== 分类描述区 ===== */
.intro-section {
  background: var(--bg-deep);
  padding: 88px 0;
  overflow: hidden;
}
.intro-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
  gap: 64px;
}
.intro-list {
  margin-top: 24px;
  display: grid;
  gap: 14px;
}
.intro-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 15px;
  color: var(--text-main);
  line-height: 1.7;
}
.intro-list li i {
  color: var(--gold);
  font-size: 16px;
  margin-top: 5px;
  flex-shrink: 0;
}
.intro-image {
  position: relative;
  border-radius: 24px;
  overflow: hidden;
  border: 1px solid var(--border-light);
  box-shadow: 0 20px 60px rgba(0,0,0,0.4);
}
.intro-image img {
  width: 100%;
  height: 340px;
  object-fit: cover;
  transition: transform 0.6s ease;
}
.intro-image:hover img {
  transform: scale(1.03);
}
.intro-image::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(5,8,16,0.35), transparent 60%);
  pointer-events: none;
}

/* ===== 卖点卡片 ===== */
.features-section {
  background: linear-gradient(180deg, var(--bg-deep) 0%, var(--bg-dark) 100%);
  padding: 88px 0;
}
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.feature-card {
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border-light);
  border-radius: 20px;
  padding: 32px 28px;
  transition: all 0.35s ease;
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--secondary), transparent);
  opacity: 0;
  transition: opacity 0.35s;
}
.feature-card:hover {
  transform: translateY(-6px);
  background: rgba(255,255,255,0.07);
  border-color: rgba(0,180,255,0.35);
  box-shadow: 0 16px 60px rgba(0,180,255,0.15);
}
.feature-card:hover::before {
  opacity: 1;
}
.feature-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--primary), rgba(0,245,200,0.55));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: #fff;
  margin-bottom: 20px;
  box-shadow: 0 8px 24px rgba(0,180,255,0.25);
  transition: transform 0.35s;
}
.feature-card:hover .feature-icon {
  transform: scale(1.06) rotate(-3deg);
}
.feature-card h3 {
  font-size: 19px;
  font-weight: 600;
  margin-bottom: 10px;
}
.feature-card p {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.75;
}

/* ===== 场景区 ===== */
.scenario-section {
  padding: 88px 0;
  background: var(--bg-deep);
}
.scenario-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 64px;
  margin-bottom: 88px;
}
.scenario-row:last-child {
  margin-bottom: 0;
}
.scenario-row.reversed .scenario-image {
  order: 2;
}
.scenario-row.reversed .scenario-text {
  order: 1;
}
.scenario-image {
  position: relative;
  border-radius: 24px;
  overflow: hidden;
  border: 1px solid transparent;
  background: linear-gradient(var(--bg-dark), var(--bg-dark)) padding-box,
              linear-gradient(135deg, rgba(0,180,255,0.5), rgba(245,184,46,0.4)) border-box;
  box-shadow: 0 24px 60px rgba(0,0,0,0.4);
}
.scenario-image img {
  width: 100%;
  height: 320px;
  object-fit: cover;
  transition: transform 0.6s;
}
.scenario-image:hover img {
  transform: scale(1.03);
}
.scenario-text {
  padding: 10px 0;
}
.scenario-text h2 {
  font-size: 30px;
  font-weight: 700;
  margin-bottom: 16px;
}
.scenario-text > p {
  font-size: 15px;
  color: var(--text-sub);
  line-height: 1.8;
  margin-bottom: 22px;
}
.scenario-text ul {
  display: grid;
  gap: 12px;
}
.scenario-text ul li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 15px;
  color: var(--text-main);
  line-height: 1.6;
}
.scenario-text ul li::before {
  content: "✓";
  color: var(--gold);
  font-weight: 700;
  font-size: 15px;
  flex-shrink: 0;
  margin-top: 2px;
}

/* ===== 流程区 ===== */
.process-section {
  background: var(--bg-dark);
  border-top: 1px solid var(--border-light);
  border-bottom: 1px solid var(--border-light);
  padding: 88px 0;
}
.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.process-step {
  position: relative;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border-light);
  border-radius: 20px;
  padding: 36px 24px 28px;
  text-align: center;
  transition: all 0.35s ease;
  overflow: hidden;
}
.process-step:hover {
  transform: translateY(-5px);
  border-color: rgba(245,184,46,0.4);
  box-shadow: 0 16px 50px rgba(245,184,46,0.12);
}
.step-num {
  font-family: var(--font-num);
  font-size: 42px;
  font-weight: 700;
  color: transparent;
  background: linear-gradient(135deg, var(--primary), var(--gold-light));
  -webkit-background-clip: text;
  background-clip: text;
  line-height: 1;
  margin-bottom: 18px;
  opacity: 0.9;
}
.process-step h3 {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 10px;
}
.process-step p {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.7;
}
/* 流程连接线装饰（桌面端） */
.process-step:not(:last-child)::after {
  content: "";
  position: absolute;
  top: 50%;
  right: -14px;
  width: 28px;
  height: 1px;
  background: linear-gradient(90deg, var(--primary), transparent);
  opacity: 0.5;
}

/* ===== FAQ ===== */
.faq-section {
  background: var(--bg-deep);
  padding: 88px 0;
}
.faq-list {
  max-width: 820px;
  margin: 0 auto;
  display: grid;
  gap: 14px;
}
.faq-item {
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border-light);
  border-radius: 16px;
  transition: border-color 0.35s ease, box-shadow 0.35s ease, background 0.35s ease;
  overflow: hidden;
}
.faq-item.active {
  border-color: rgba(245,184,46,0.4);
  background: rgba(255,255,255,0.06);
  box-shadow: 0 0 30px rgba(245,184,46,0.08);
}
.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 24px;
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  text-align: left;
  transition: color 0.3s;
}
.faq-question:hover {
  color: var(--gold-light);
}
.faq-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 1px solid rgba(245,184,46,0.4);
  color: var(--gold);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  flex-shrink: 0;
  transition: transform 0.35s ease, background 0.35s ease, color 0.35s ease;
}
.faq-item.active .faq-icon {
  transform: rotate(45deg);
  background: rgba(245,184,46,0.15);
  color: var(--gold-light);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0.4,0,0.2,1);
}
.faq-answer-inner {
  padding: 0 24px 22px;
  font-size: 15px;
  color: var(--text-sub);
  line-height: 1.75;
}

/* ===== CTA 区 ===== */
.cta-section {
  position: relative;
  overflow: hidden;
  padding: 96px 0;
  background: linear-gradient(135deg, #0d1b2a 0%, #0a0f1e 50%, #101828 100%);
}
.cta-backdrop {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0.2;
}
.cta-backdrop::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(5,8,16,0.9), rgba(5,8,16,0.7), rgba(5,8,16,0.95));
}
.cta-section::before,
.cta-section::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(245,184,46,0.6), transparent);
  z-index: 2;
}
.cta-section::before {
  top: 0;
}
.cta-section::after {
  bottom: 0;
}
.cta-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
}
.cta-content h2 {
  font-size: 36px;
  font-weight: 700;
  margin-bottom: 16px;
  color: #fff;
}
.cta-content p {
  font-size: 16px;
  color: #CBD5E1;
  margin-bottom: 36px;
  line-height: 1.7;
}

/* ===== 页脚 ===== */
.site-footer {
  background: var(--bg-darker);
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 72px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 56px;
}
.footer-logo {
  font-size: 24px;
  font-weight: 700;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 18px;
}
.footer-logo .logo-mark {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--primary), var(--gold));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  color: #fff;
}
.footer-desc {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.75;
  margin-bottom: 22px;
  max-width: 360px;
}
.social-icons {
  display: flex;
  gap: 10px;
}
.social-icons a {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-sub);
  font-size: 15px;
  transition: all 0.3s ease;
}
.social-icons a:hover {
  color: var(--primary);
  border-color: var(--primary);
  background: rgba(0,180,255,0.1);
  transform: translateY(-2px);
}
.footer-title {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 20px;
  letter-spacing: 0.5px;
}
.footer-links,
.footer-contact {
  display: grid;
  gap: 12px;
}
.footer-links a {
  font-size: 14px;
  color: var(--text-sub);
  transition: color 0.25s, padding-left 0.25s;
}
.footer-links a:hover {
  color: var(--primary);
  padding-left: 4px;
}
.footer-contact li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.6;
}
.footer-contact li i {
  color: var(--gold);
  margin-top: 3px;
  flex-shrink: 0;
  width: 16px;
  text-align: center;
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 24px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-size: 14px;
  color: var(--text-weak);
}
.footer-bottom span:last-child {
  white-space: nowrap;
}

/* ===== 背景光晕 ===== */
body::before {
  content: "";
  position: fixed;
  top: -120px;
  left: -120px;
  width: 420px;
  height: 420px;
  background: radial-gradient(circle, rgba(0,180,255,0.08), transparent 65%);
  pointer-events: none;
  z-index: 0;
}
body::after {
  content: "";
  position: fixed;
  bottom: -140px;
  right: -140px;
  width: 460px;
  height: 460px;
  background: radial-gradient(circle, rgba(245,184,46,0.07), transparent 65%);
  pointer-events: none;
  z-index: 0;
}
main {
  position: relative;
  z-index: 1;
}
footer {
  position: relative;
  z-index: 1;
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .process-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
  .process-step:not(:last-child)::after {
    display: none;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }
  .scenario-row {
    grid-template-columns: 1fr;
    gap: 40px;
    margin-bottom: 64px;
  }
  .scenario-row.reversed .scenario-image {
    order: 1;
  }
  .scenario-row.reversed .scenario-text {
    order: 2;
  }
  .intro-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .hero-title {
    font-size: 48px;
  }
}
@media (max-width: 768px) {
  .nav-links {
    display: none !important;
  }
  .nav-cta {
    display: none !important;
  }
  .nav-toggle {
    display: flex !important;
  }
  .hero {
    padding: 96px 0 64px;
    min-height: auto;
  }
  .hero-title {
    font-size: 42px;
  }
  .hero-subtitle {
    font-size: 16px;
  }
  .section-pad,
  .features-section,
  .scenario-section,
  .process-section,
  .faq-section,
  .cta-section,
  .intro-section {
    padding: 64px 0;
  }
  .scenario-image img {
    height: 240px;
  }
  .process-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
  .trust-tag {
    padding: 6px 14px;
    font-size: 13px;
  }
}
@media (max-width: 520px) {
  .stats-grid,
  .features-grid {
    grid-template-columns: 1fr;
  }
  .hero-title {
    font-size: 36px;
  }
  .hero-actions {
    flex-direction: column;
  }
  .hero-actions .btn {
    width: 100%;
  }
  .hero-trust {
    flex-direction: column;
    align-items: flex-start;
  }
  .trust-tag {
    width: 100%;
  }
  .section-title {
    font-size: 26px;
  }
  .cta-content h2 {
    font-size: 28px;
  }
  .cta-content .btn {
    width: 100%;
  }
  .logo {
    font-size: 20px;
  }
  .logo-icon {
    width: 32px;
    height: 32px;
    font-size: 14px;
  }
}

/* roulang page: article */
:root {
    --bg-deep: #0A0F1E;
    --bg-dark: #0B132B;
    --bg-black: #050810;
    --primary: #00B4FF;
    --primary-hover: #0090D6;
    --accent: #00F5C8;
    --gold: #F5B82E;
    --gold-light: #FFD166;
    --text-main: #E2E8F0;
    --text-sub: #94A3B8;
    --text-mute: #64748B;
    --border-color: rgba(255, 255, 255, 0.08);
    --border-glow: rgba(0, 180, 255, 0.35);
    --glow-primary: rgba(0, 180, 255, 0.4);
    --glow-gold: rgba(245, 184, 46, 0.35);
    --font-sans: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", system-ui, sans-serif;
    --font-display: "Barlow Condensed", "Oswald", "Arial Narrow", sans-serif;
  }

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

  html {
    scroll-behavior: smooth;
  }

  body {
    font-family: var(--font-sans);
    background-color: var(--bg-deep);
    color: var(--text-main);
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
  }

  body::before {
    content: "";
    position: fixed;
    top: -140px;
    left: -140px;
    width: 460px;
    height: 460px;
    background: radial-gradient(circle, rgba(0, 180, 255, 0.10), transparent 70%);
    pointer-events: none;
    z-index: 0;
  }

  body::after {
    content: "";
    position: fixed;
    bottom: -140px;
    right: -140px;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(245, 184, 46, 0.08), transparent 70%);
    pointer-events: none;
    z-index: 0;
  }

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

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

  button {
    font-family: inherit;
    cursor: pointer;
  }

  .container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding-left: 20px;
    padding-right: 20px;
  }

  @media (min-width: 768px) {
    .container {
      padding-left: 32px;
      padding-right: 32px;
    }
  }

  @media (min-width: 1024px) {
    .container {
      padding-left: 40px;
      padding-right: 40px;
    }
  }

  .site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 50;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-left: 20px;
    padding-right: 20px;
    background: rgba(5, 8, 16, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
  }

  @media (min-width: 1024px) {
    .site-header {
      padding-left: 40px;
      padding-right: 40px;
    }
  }

  .site-header::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: -1px;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(0, 180, 255, 0.6), rgba(245, 184, 46, 0.6), transparent);
  }

  .brand-logo {
    font-size: 22px;
    font-weight: 800;
    color: #ffffff;
    letter-spacing: -0.02em;
    display: flex;
    align-items: center;
    gap: 10px;
  }

  .brand-logo .brand-vii {
    color: var(--gold-light);
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 22px;
    letter-spacing: 0.02em;
  }

  .logo-mark {
    width: 34px;
    height: 34px;
    border-radius: 10px;
    background: linear-gradient(135deg, #00B4FF, #00F5C8);
    color: #fff;
    font-family: var(--font-display);
    font-weight: 800;
    font-size: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 18px rgba(0, 180, 255, 0.3);
  }

  .nav-links .nav-link {
    position: relative;
    color: #CBD5E1;
    font-size: 15px;
    font-weight: 500;
    padding: 6px 2px;
    transition: color 0.2s ease;
  }

  .nav-links .nav-link:hover {
    color: #ffffff;
  }

  .nav-links .nav-link.active {
    color: #ffffff;
  }

  .nav-links .nav-link.active::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: -2px;
    height: 2px;
    border-radius: 2px;
    background: var(--gold-light);
    box-shadow: 0 0 12px rgba(245, 184, 46, 0.6);
  }

  .btn-glow {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(90deg, #00B4FF, #0078FF 78%, #F5B82E 122%);
    color: #ffffff;
    border: none;
    border-radius: 12px;
    font-weight: 600;
    box-shadow: 0 0 24px rgba(0, 180, 255, 0.4), 0 4px 14px rgba(0, 0, 0, 0.3);
    transition: transform 0.2s ease, box-shadow 0.2s ease, filter 0.2s ease;
    cursor: pointer;
  }

  .btn-glow:hover {
    transform: translateY(-1px);
    box-shadow: 0 0 42px rgba(0, 180, 255, 0.5), 0 6px 18px rgba(0, 0, 0, 0.3);
    filter: brightness(1.08);
  }

  .btn-glow:active {
    transform: scale(0.97);
  }

  .btn-glow:focus-visible {
    outline: 2px solid var(--gold-light);
    outline-offset: 4px;
  }

  .btn-sm {
    min-height: 38px;
    padding: 0 18px;
    font-size: 14px;
    gap: 8px;
  }

  .btn-md {
    min-height: 44px;
    padding: 0 26px;
    font-size: 15px;
    gap: 10px;
  }

  .btn-outline {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 42px;
    padding: 0 22px;
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 12px;
    color: var(--text-main);
    font-size: 14px;
    font-weight: 600;
    background: rgba(255, 255, 255, 0.06);
    transition: all 0.2s ease;
    cursor: pointer;
  }

  .btn-outline:hover {
    border-color: var(--border-glow);
    background: rgba(255, 255, 255, 0.1);
    color: #ffffff;
    box-shadow: 0 0 20px rgba(0, 180, 255, 0.16);
  }

  .btn-outline:active {
    transform: scale(0.97);
  }

  .btn-outline:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 4px;
  }

  .nav-toggle {
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.14);
    color: #ffffff;
    width: 42px;
    height: 42px;
    border-radius: 12px;
    font-size: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
  }

  .nav-toggle:hover {
    border-color: var(--primary);
    background: rgba(0, 180, 255, 0.1);
  }

  .mobile-nav {
    display: none;
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    z-index: 49;
    padding: 12px 20px 24px;
    background: rgba(5, 8, 16, 0.97);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0, 180, 255, 0.3);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.45);
  }

  .mobile-nav.open {
    display: block;
  }

  .mobile-nav .nav-link {
    display: block;
    padding: 14px 0;
    font-size: 16px;
    font-weight: 500;
    color: #CBD5E1;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  }

  .mobile-nav .nav-link:hover,
  .mobile-nav .nav-link.active {
    color: #ffffff;
  }

  .mobile-nav .mobile-cta {
    margin-top: 18px;
    width: 100%;
  }

  .article-page {
    position: relative;
    z-index: 1;
  }

  .breadcrumb {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
    font-size: 13px;
    color: var(--text-mute);
  }

  .breadcrumb a {
    transition: color 0.2s;
  }

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

  .breadcrumb .sep {
    color: rgba(255, 255, 255, 0.2);
  }

  .breadcrumb .current {
    color: var(--text-sub);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    max-width: 240px;
  }

  .article-title {
    margin-top: 18px;
    font-size: 36px;
    line-height: 1.28;
    font-weight: 800;
    color: #ffffff;
    letter-spacing: -0.02em;
  }

  @media (min-width: 768px) {
    .article-title {
      font-size: 46px;
    }
  }

  .article-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 24px;
    margin-top: 18px;
    color: var(--text-mute);
    font-size: 14px;
  }

  .article-meta span {
    display: inline-flex;
    align-items: center;
    gap: 8px;
  }

  .article-meta a {
    color: var(--text-sub);
    transition: color 0.2s;
  }

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

  .article-banner {
    margin-top: 28px;
    border-radius: 24px;
    overflow: hidden;
    border: 1px solid var(--border-color);
    box-shadow: 0 18px 60px rgba(0, 0, 0, 0.35);
  }

  .article-banner img {
    width: 100%;
    height: auto;
  }

  .article-body {
    font-size: 16px;
    color: var(--text-main);
    line-height: 1.85;
  }

  .article-body > p:first-child {
    font-size: 18px;
    color: #EAF2FF;
  }

  .article-body p {
    margin-bottom: 24px;
  }

  .article-body h2 {
    font-size: 28px;
    font-weight: 700;
    color: #ffffff;
    margin: 56px 0 16px;
    letter-spacing: -0.02em;
  }

  .article-body h3 {
    font-size: 22px;
    font-weight: 600;
    color: #ffffff;
    margin: 40px 0 12px;
  }

  .article-body a {
    color: var(--primary);
    text-decoration: underline;
    text-decoration-color: rgba(0, 180, 255, 0.4);
    text-underline-offset: 4px;
    transition: color 0.2s;
  }

  .article-body a:hover {
    color: #ffffff;
  }

  .article-body ul,
  .article-body ol {
    margin: 12px 0 24px;
    padding: 0;
    list-style: none;
  }

  .article-body li {
    position: relative;
    padding-left: 26px;
    margin-bottom: 10px;
  }

  .article-body ul li::before {
    content: "";
    position: absolute;
    left: 6px;
    top: 0.78em;
    width: 8px;
    height: 8px;
    border-radius: 2px;
    background: var(--gold);
    transform: rotate(45deg);
    box-shadow: 0 0 8px rgba(245, 184, 46, 0.4);
  }

  .article-body ol {
    counter-reset: article-ol;
  }

  .article-body ol li {
    counter-increment: article-ol;
  }

  .article-body ol li::before {
    content: counter(article-ol);
    position: absolute;
    left: 0;
    top: 0.12em;
    width: 20px;
    height: 20px;
    font-weight: 700;
    font-size: 12px;
    color: var(--gold-light);
    text-align: center;
  }

  .article-body blockquote {
    margin: 28px 0;
    border-left: 4px solid var(--gold);
    background: rgba(245, 184, 46, 0.06);
    border-radius: 12px;
    padding: 20px 24px;
    font-size: 15px;
    color: var(--text-main);
  }

  .article-body img {
    border-radius: 16px;
    margin: 24px 0;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
  }

  .article-body figcaption {
    font-size: 13px;
    color: var(--text-mute);
    text-align: center;
    margin-top: -16px;
    margin-bottom: 24px;
  }

  .article-body code {
    background: #111827;
    color: #7DD3FC;
    padding: 3px 8px;
    border-radius: 6px;
    font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
    font-size: 14px;
  }

  .article-body pre {
    background: #111827;
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 14px;
    padding: 20px;
    overflow-x: auto;
    margin: 24px 0;
    line-height: 1.7;
  }

  .article-body pre code {
    background: transparent;
    padding: 0;
    color: #A5F3FC;
  }

  .tags-wrap {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
  }

  .tag-pill {
    display: inline-flex;
    align-items: center;
    padding: 6px 16px;
    border: 1px solid rgba(245, 184, 46, 0.3);
    color: var(--gold-light);
    font-size: 13px;
    border-radius: 999px;
    background: rgba(245, 184, 46, 0.06);
    transition: all 0.2s ease;
  }

  .tag-pill:hover {
    background: rgba(245, 184, 46, 0.16);
    border-color: var(--gold-light);
    color: #ffffff;
  }

  .related-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
  }

  @media (min-width: 768px) {
    .related-grid {
      grid-template-columns: repeat(2, 1fr);
    }
  }

  @media (min-width: 1024px) {
    .related-grid {
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
  }

  .related-card {
    display: flex;
    flex-direction: column;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 20px;
    overflow: hidden;
    transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
  }

  .related-card:hover {
    transform: translateY(-6px);
    border-color: var(--border-glow);
    box-shadow: 0 16px 44px rgba(0, 180, 255, 0.16);
  }

  .related-card img {
    width: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
  }

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

  .related-cat {
    display: inline-block;
    font-size: 12px;
    color: var(--gold-light);
    border: 1px solid rgba(245, 184, 46, 0.3);
    border-radius: 999px;
    padding: 3px 10px;
    background: rgba(245, 184, 46, 0.05);
    margin-bottom: 10px;
  }

  .related-title {
    font-size: 17px;
    font-weight: 600;
    color: #ffffff;
    line-height: 1.55;
    margin-bottom: 8px;
  }

  .related-date {
    font-size: 13px;
    color: var(--text-mute);
  }

  .empty-section {
    padding: 180px 20px 120px;
  }

  .empty-card {
    border: 1px dashed rgba(255, 255, 255, 0.2);
    border-radius: 24px;
    background: rgba(255, 255, 255, 0.03);
    padding: 80px 24px;
    text-align: center;
    max-width: 560px;
    margin: 0 auto;
  }

  .empty-card .empty-icon {
    font-size: 44px;
    color: var(--gold-light);
    margin-bottom: 18px;
  }

  .empty-card h1 {
    font-size: 28px;
    color: #ffffff;
    font-weight: 700;
    margin-bottom: 12px;
  }

  .empty-card p {
    color: var(--text-sub);
    font-size: 15px;
    margin-bottom: 28px;
  }

  .site-footer {
    position: relative;
    z-index: 1;
    background: var(--bg-black);
    padding: 64px 0 0;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    margin-top: 56px;
  }

  .footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 36px;
    padding-bottom: 48px;
  }

  @media (min-width: 768px) {
    .footer-grid {
      grid-template-columns: repeat(2, 1fr);
    }
  }

  @media (min-width: 1024px) {
    .footer-grid {
      grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
    }
  }

  .footer-logo {
    font-size: 22px;
    font-weight: 800;
    color: #ffffff;
    display: flex;
    align-items: center;
    gap: 8px;
  }

  .footer-desc {
    margin-top: 14px;
    color: var(--text-mute);
    font-size: 14px;
    max-width: 360px;
    line-height: 1.7;
  }

  .social-icons {
    display: flex;
    gap: 10px;
    margin-top: 18px;
  }

  .social-icons a {
    width: 38px;
    height: 38px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 10px;
    color: var(--text-sub);
    transition: all 0.2s ease;
  }

  .social-icons a:hover {
    color: #ffffff;
    border-color: var(--primary);
    background: rgba(0, 180, 255, 0.1);
    box-shadow: 0 0 16px rgba(0, 180, 255, 0.2);
  }

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

  .footer-links,
  .footer-contact {
    list-style: none;
    margin: 0;
    padding: 0;
  }

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

  .footer-links a {
    color: var(--text-sub);
    font-size: 14px;
    transition: color 0.2s;
  }

  .footer-links a:hover {
    color: var(--primary);
  }

  .footer-contact li {
    color: var(--text-sub);
    font-size: 14px;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 10px;
  }

  .footer-contact i {
    color: var(--text-mute);
    width: 16px;
  }

  .footer-bottom {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: space-between;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    padding: 20px 0;
    font-size: 13px;
    color: var(--text-mute);
  }

/* roulang page: category2 */
:root {
  --bg-deep: #050810;
  --bg-dark: #0A0F1E;
  --bg-secondary: #0B132B;
  --primary: #00B4FF;
  --primary-dark: #0090D6;
  --accent: #00F5C8;
  --gold: #F5B82E;
  --gold-light: #FFD166;
  --text-main: #E2E8F0;
  --text-secondary: #94A3B8;
  --text-muted: #64748B;
  --border: rgba(255,255,255,0.08);
  --border-accent: rgba(0,180,255,0.35);
  --shadow-glow: rgba(0,180,255,0.4);
  --shadow-gold: rgba(245,184,46,0.35);
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  background: var(--bg-dark);
  color: var(--text-main);
  font-family: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", system-ui, sans-serif;
  font-size: 15px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
body::before {
  content: "";
  position: fixed;
  top: -20%;
  left: -10%;
  width: 70vw;
  height: 70vw;
  background: radial-gradient(circle, rgba(0,180,255,0.10) 0%, transparent 60%);
  z-index: 0;
  pointer-events: none;
}
body::after {
  content: "";
  position: fixed;
  bottom: -15%;
  right: -10%;
  width: 60vw;
  height: 60vw;
  background: radial-gradient(circle, rgba(245,184,46,0.08) 0%, transparent 55%);
  z-index: 0;
  pointer-events: none;
}
body > * {
  position: relative;
  z-index: 1;
}
img {
  max-width: 100%;
  display: block;
}
a {
  color: inherit;
  text-decoration: none;
}
button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding-left: 16px;
  padding-right: 16px;
}
.container-narrow {
  max-width: 860px;
}
.section {
  padding: 72px 0;
}
.section-alt {
  background: linear-gradient(180deg, rgba(255,255,255,0.02) 0%, rgba(255,255,255,0.015) 100%);
  border-top: 1px solid rgba(255,255,255,0.04);
  border-bottom: 1px solid rgba(255,255,255,0.04);
}
.section-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 52px;
}
.section-title {
  font-size: clamp(28px, 4vw, 36px);
  font-weight: 700;
  line-height: 1.25;
  color: #fff;
  margin: 0 0 14px;
  letter-spacing: 0.01em;
}
.section-desc {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.75;
  margin: 0;
}
.section-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--gold-light);
  background: rgba(245,184,46,0.08);
  border: 1px solid rgba(245,184,46,0.22);
  padding: 4px 12px;
  border-radius: 999px;
  margin-bottom: 14px;
}
/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: 64px;
  background: rgba(5,8,16,0.85);
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid transparent;
  background-image: linear-gradient(rgba(5,8,16,0.85), rgba(5,8,16,0.85)), linear-gradient(90deg, transparent, rgba(0,180,255,0.6), rgba(245,184,46,0.6), transparent);
  background-origin: border-box;
  background-clip: padding-box, border-box;
}
.header-inner {
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo-icon {
  width: 34px;
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  background: linear-gradient(135deg, #00B4FF 0%, #0078FF 60%, #F5B82E 100%);
  color: #fff;
  font-family: "Barlow Condensed", "Oswald", sans-serif;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.02em;
  box-shadow: 0 0 18px rgba(0,180,255,0.3);
}
.logo-text {
  font-size: 21px;
  font-weight: 700;
  color: #fff;
  line-height: 1;
  letter-spacing: 0.02em;
}
.logo-vi {
  font-family: "Barlow Condensed", "Oswald", sans-serif;
  color: var(--gold-light);
  font-weight: 700;
  font-size: 22px;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 34px;
  margin: 0 auto;
}
.nav-link {
  font-size: 15px;
  font-weight: 500;
  color: #CBD5E1;
  padding: 20px 0;
  position: relative;
  transition: color .25s ease;
}
.nav-link:hover {
  color: #fff;
}
.nav-link.active {
  color: #fff;
  font-weight: 600;
}
.nav-link.active::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 10px;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--gold), rgba(245,184,46,0.4), var(--gold));
  box-shadow: 0 0 12px rgba(245,184,46,0.55);
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}
/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 600;
  border-radius: 12px;
  padding: 10px 22px;
  font-size: 14px;
  line-height: 1.4;
  transition: all .25s ease;
  border: 1px solid transparent;
  white-space: nowrap;
}
.btn-primary {
  background: linear-gradient(85deg, #00B4FF 0%, #0078FF 60%, #F5B82E 110%);
  color: #fff;
  box-shadow: 0 0 30px rgba(0,180,255,0.35);
}
.btn-primary:hover {
  background: linear-gradient(85deg, #00C1FF 0%, #0084FF 60%, #FFC94A 110%);
  box-shadow: 0 0 38px rgba(0,180,255,0.5);
  transform: translateY(-1px);
}
.btn-primary:active {
  transform: scale(0.97);
}
.btn-ghost {
  background: rgba(255,255,255,0.06);
  border-color: rgba(255,255,255,0.15);
  color: #E2E8F0;
}
.btn-ghost:hover {
  border-color: rgba(0,180,255,0.5);
  background: rgba(255,255,255,0.09);
  color: #fff;
}
.btn-ghost:active {
  transform: scale(0.97);
}
.btn-sm {
  padding: 8px 16px;
  font-size: 13px;
  border-radius: 10px;
}
.btn-lg {
  padding: 14px 32px;
  font-size: 16px;
  border-radius: 14px;
}
.btn-xl {
  padding: 16px 40px;
  font-size: 17px;
  border-radius: 16px;
}
.btn-block {
  width: 100%;
  justify-content: center;
}
.btn:focus-visible,
.nav-link:focus-visible,
.faq-btn:focus-visible,
.mobile-nav-link:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}
/* Mobile Menu */
.mobile-menu-btn {
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #E2E8F0;
  font-size: 18px;
  border-radius: 10px;
  border: 1px solid rgba(255,255,255,0.1);
  background: rgba(255,255,255,0.04);
  transition: background .2s ease;
}
.mobile-menu-btn:hover {
  background: rgba(255,255,255,0.08);
}
.mobile-menu {
  position: fixed;
  top: 64px;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 99;
  background: rgba(5,8,16,0.98);
  -webkit-backdrop-filter: blur(24px);
  backdrop-filter: blur(24px);
  padding: 30px 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transform: translateY(-24px);
  opacity: 0;
  visibility: hidden;
  transition: all .3s ease;
}
.mobile-menu.open {
  transform: translateY(0);
  opacity: 1;
  visibility: visible;
}
.mobile-nav-link {
  display: block;
  font-size: 17px;
  font-weight: 500;
  color: #CBD5E1;
  padding: 14px 4px;
  border-bottom: 1px solid rgba(255,255,255,0.05);
  transition: color .2s ease;
}
.mobile-nav-link:hover,
.mobile-nav-link.active {
  color: #fff;
  font-weight: 600;
}
.mobile-menu .btn {
  margin-top: 20px;
}
/* Page Hero */
.page-hero {
  position: relative;
  min-height: 76vh;
  display: flex;
  align-items: center;
  padding: 140px 0 80px;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(10,15,30,0.82) 0%, rgba(10,15,30,0.65) 50%, rgba(10,15,30,0.92) 100%);
}
.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: #CBD5E1;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  margin-bottom: 26px;
}
.hero-pill-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--gold-light);
  box-shadow: 0 0 10px rgba(245,184,46,0.8);
}
.hero-title {
  font-size: clamp(40px, 6vw, 60px);
  font-weight: 700;
  line-height: 1.15;
  color: #fff;
  margin: 0 0 18px;
  letter-spacing: 0.01em;
}
.hero-subtitle {
  font-size: clamp(16px, 2.2vw, 20px);
  line-height: 1.7;
  color: #CBD5E1;
  max-width: 680px;
  margin: 0 0 36px;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}
.hero-trust {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin-top: 38px;
}
.trust-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-secondary);
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 999px;
  padding: 8px 16px;
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}
.trust-num {
  font-size: 16px;
  font-weight: 700;
  color: var(--gold-light);
  font-variant-numeric: tabular-nums;
}
/* Stats */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
.stat-card {
  text-align: center;
  padding: 28px 20px;
}
.stat-number {
  font-size: clamp(30px, 4vw, 40px);
  font-weight: 700;
  color: var(--gold-light);
  font-variant-numeric: tabular-nums;
  line-height: 1.2;
  margin-bottom: 4px;
}
.stat-plus {
  font-size: 22px;
  margin-left: 2px;
  color: var(--gold);
}
.stat-label {
  font-size: 14px;
  color: var(--text-secondary);
}
/* Glass Card */
.glass-card {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 16px;
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  box-shadow: 0 8px 40px rgba(0,0,0,0.35);
  transition: transform .3s ease, border-color .3s ease, box-shadow .3s ease, background .3s ease;
}
.glass-card:hover {
  border-color: rgba(0,180,255,0.35);
  box-shadow: 0 16px 60px rgba(0,180,255,0.18);
  transform: translateY(-4px);
}
/* Features */
.features-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}
.feature-card {
  padding: 30px;
}
.feature-icon {
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(0,180,255,0.2) 0%, rgba(0,245,200,0.12) 100%);
  border: 1px solid rgba(0,180,255,0.3);
  color: var(--primary);
  font-size: 20px;
  margin-bottom: 18px;
}
.feature-card h3 {
  font-size: 19px;
  font-weight: 600;
  color: #fff;
  margin: 0 0 10px;
}
.feature-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.75;
  margin: 0 0 16px;
}
.feature-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 500;
  color: var(--primary);
  transition: gap .25s ease, color .25s ease;
}
.feature-link:hover {
  gap: 10px;
  color: var(--accent);
}
/* Scenarios */
.scenario-block {
  display: flex;
  flex-direction: column;
  gap: 28px;
  align-items: center;
  margin-bottom: 72px;
}
.scenario-block:last-child {
  margin-bottom: 0;
}
.scenario-media {
  width: 100%;
  border-radius: 24px;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.1);
  position: relative;
  box-shadow: 0 12px 50px rgba(0,0,0,0.45);
}
.scenario-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 60%, rgba(0,180,255,0.15) 100%);
  pointer-events: none;
}
.scenario-media img {
  width: 100%;
  height: auto;
  min-height: 220px;
  object-fit: cover;
  transition: transform .5s ease;
}
.scenario-block:hover .scenario-media img {
  transform: scale(1.03);
}
.scenario-text {
  width: 100%;
  padding: 10px 4px;
}
.scenario-text h3 {
  font-size: clamp(22px, 3vw, 28px);
  font-weight: 700;
  color: #fff;
  line-height: 1.3;
  margin: 0 0 14px;
}
.scenario-text > p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin: 0 0 18px;
}
.check-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.check-list li {
  position: relative;
  padding-left: 28px;
  font-size: 14px;
  color: #CBD5E1;
  line-height: 1.7;
  margin-bottom: 8px;
}
.check-list li::before {
  content: "\f00c";
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  position: absolute;
  left: 0;
  top: 1px;
  color: var(--gold-light);
  font-size: 14px;
}
/* Solution Grid */
.solution-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}
.solution-card {
  overflow: hidden;
  display: flex;
  flex-direction: column;
  border-radius: 18px;
}
.solution-card:hover {
  transform: translateY(-6px);
}
.solution-img {
  position: relative;
  height: 180px;
  overflow: hidden;
}
.solution-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s ease;
}
.solution-card:hover .solution-img img {
  transform: scale(1.05);
}
.solution-img::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(5,8,16,0.55) 100%);
}
.solution-tag {
  position: absolute;
  top: 12px;
  left: 12px;
  z-index: 2;
  font-size: 12px;
  font-weight: 600;
  color: #fff;
  background: linear-gradient(135deg, rgba(0,180,255,0.85), rgba(0,120,255,0.75));
  padding: 5px 12px;
  border-radius: 999px;
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
  box-shadow: 0 4px 16px rgba(0,0,0,0.25);
}
.solution-body {
  padding: 22px 22px 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.solution-body h3 {
  font-size: 18px;
  font-weight: 600;
  color: #fff;
  margin: 0 0 8px;
}
.solution-body p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin: 0 0 16px;
  flex: 1;
}
.solution-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 500;
  color: var(--primary);
  transition: gap .25s ease, color .25s ease;
}
.solution-more:hover {
  gap: 10px;
  color: var(--accent);
}
/* Process */
.process-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  position: relative;
}
.process-step {
  text-align: center;
  padding: 32px 24px;
  position: relative;
}
.process-num {
  font-family: "Barlow Condensed", "Oswald", sans-serif;
  font-size: 40px;
  font-weight: 700;
  color: var(--gold);
  opacity: 0.75;
  line-height: 1;
  margin-bottom: 12px;
}
.process-step h3 {
  font-size: 18px;
  font-weight: 600;
  color: #fff;
  margin: 0 0 8px;
}
.process-step p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin: 0;
}
/* News */
.news-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}
.news-card {
  padding: 24px;
  display: flex;
  flex-direction: column;
}
.news-info {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
  flex-wrap: wrap;
}
.news-date {
  font-size: 13px;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
}
.news-tag {
  font-size: 12px;
  font-weight: 600;
  color: var(--gold-light);
  background: rgba(245,184,46,0.08);
  border: 1px solid rgba(245,184,46,0.2);
  padding: 3px 10px;
  border-radius: 999px;
}
.news-card h3 {
  font-size: 17px;
  font-weight: 600;
  color: #fff;
  line-height: 1.5;
  margin: 0 0 10px;
}
.news-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin: 0 0 16px;
  flex: 1;
}
.news-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 500;
  color: var(--primary);
  transition: gap .25s ease, color .25s ease;
}
.news-link:hover {
  gap: 10px;
  color: var(--accent);
}
/* FAQ */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.faq-item {
  border-radius: 14px;
  overflow: hidden;
}
.faq-item.active {
  border-color: rgba(245,184,46,0.4);
  box-shadow: 0 8px 40px rgba(245,184,46,0.08);
}
.faq-btn {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 22px;
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  text-align: left;
  transition: background .25s ease;
}
.faq-btn:hover {
  background: rgba(255,255,255,0.03);
}
.faq-icon {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  border: 1px solid rgba(245,184,46,0.4);
  color: var(--gold-light);
  font-size: 13px;
  transition: transform .3s ease, background .3s ease;
}
.faq-item.active .faq-icon {
  background: rgba(245,184,46,0.15);
  transform: rotate(45deg);
}
.faq-answer {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows .35s ease;
}
.faq-answer-inner {
  overflow: hidden;
}
.faq-answer p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.75;
  margin: 0;
  padding: 0 22px 20px;
}
.faq-item.active .faq-answer {
  grid-template-rows: 1fr;
}
/* CTA */
.cta-section {
  padding: 80px 0;
  background: linear-gradient(135deg, #0B132B 0%, #0A0F1E 60%, rgba(0,180,255,0.12) 130%);
  border-top: 1px solid rgba(245,184,46,0.18);
  border-bottom: 1px solid rgba(245,184,46,0.18);
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-2.webp');
  background-size: cover;
  background-position: center;
  opacity: 0.12;
}
.cta-section::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(245,184,46,0.5), transparent);
}
.cta-inner {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 720px;
  margin: 0 auto;
  padding: 0 16px;
}
.cta-inner h2 {
  font-size: clamp(28px, 4vw, 38px);
  font-weight: 700;
  color: #fff;
  line-height: 1.3;
  margin: 0 0 14px;
}
.cta-inner p {
  font-size: 16px;
  color: #CBD5E1;
  line-height: 1.75;
  margin: 0 0 32px;
}
/* Footer */
.site-footer {
  background: #050810;
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 60px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
  padding-bottom: 44px;
}
.footer-logo {
  font-size: 24px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 12px;
}
.footer-desc {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.75;
  margin: 0 0 20px;
  max-width: 360px;
}
.social-icons {
  display: flex;
  gap: 10px;
}
.social-icons a {
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.08);
  color: var(--text-secondary);
  font-size: 15px;
  transition: all .25s ease;
}
.social-icons a:hover {
  color: #fff;
  border-color: rgba(0,180,255,0.4);
  background: rgba(0,180,255,0.1);
  transform: translateY(-2px);
}
.footer-title {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  margin: 0 0 18px;
  letter-spacing: 0.03em;
}
.footer-links,
.footer-contact {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-links a {
  font-size: 14px;
  color: var(--text-secondary);
  transition: color .2s ease, padding-left .2s ease;
}
.footer-links a:hover {
  color: var(--primary);
  padding-left: 4px;
}
.footer-contact li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--text-secondary);
}
.footer-contact i {
  width: 18px;
  color: var(--text-muted);
  font-size: 13px;
  text-align: center;
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding: 20px 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
}

/* Responsive */
@media (max-width: 1024px) {
  .section {
    padding: 60px 0;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 28px;
  }
}
@media (max-width: 768px) {
  .section {
    padding: 50px 0;
  }
  .page-hero {
    min-height: auto;
    padding: 110px 0 60px;
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .process-grid {
    grid-template-columns: 1fr 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .hero-actions .btn {
    width: 100%;
  }
  .scenario-block {
    margin-bottom: 52px;
  }
}
@media (max-width: 520px) {
  .section {
    padding: 42px 0;
  }
  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }
  .process-grid {
    grid-template-columns: 1fr;
  }
  .solution-grid {
    grid-template-columns: 1fr;
  }
  .news-grid {
    grid-template-columns: 1fr;
  }
  .cta-section {
    padding: 56px 0;
  }
}