/* roulang page: index */
:root{
  --bg-primary:#070D1A;
  --bg-secondary:#0A1428;
  --bg-elevated:#0E1B30;
  --bg-card:rgba(255,255,255,0.05);
  --bg-card-hover:rgba(255,255,255,0.08);
  --border-card:rgba(255,255,255,0.12);
  --border-card-hover:rgba(63,224,255,0.35);
  --accent-1:#3FE0FF;
  --accent-2:#00E5CC;
  --accent-warm:#FFC55A;
  --text-heading:#E6F6FF;
  --text-body:#C8D6E8;
  --text-muted:#8FA7C3;
  --radius-card:20px;
  --radius-normal:16px;
  --radius-image:12px;
  --radius-btn:12px;
  --shadow-default:0 8px 24px rgba(0,0,0,0.30);
  --shadow-hover:0 16px 40px rgba(63,224,255,0.16);
  --spacing-section:100px;
  --container-max:1200px;
  --font-stack:Inter,"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-stack);
  background:var(--bg-primary);
  color:var(--text-body);
  line-height:1.7;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--accent-1);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--accent-2)}
ul,ol{list-style:none}
button,input,textarea,select{font-family:inherit;font-size:inherit;color:inherit}
.container{max-width:var(--container-max);margin:0 auto;padding:0 24px}
.section{padding:var(--spacing-section) 0}
.text-center{text-align:center}

a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{
  outline:2px solid var(--accent-1);
  outline-offset:2px;
}

.btn{
  display:inline-flex;align-items:center;justify-content:center;
  border:none;cursor:pointer;text-decoration:none;
  border-radius:var(--radius-btn);font-weight:600;
  padding:14px 32px;font-size:17px;line-height:1.4;
  transition:all .25s ease;position:relative;
}
.btn-primary{
  background:linear-gradient(135deg,var(--accent-1),var(--accent-2));
  color:#04222B;box-shadow:0 4px 20px rgba(63,224,255,0.25);
}
.btn-primary:hover{
  transform:translateY(-1px);
  box-shadow:0 0 24px rgba(63,224,255,0.5);
  color:#04222B;
}
.btn-secondary{
  background:transparent;color:var(--accent-1);
  border:1px solid rgba(63,224,255,0.6);
}
.btn-secondary:hover{
  border-color:var(--accent-1);
  background:rgba(63,224,255,0.08);
  color:var(--accent-1);
  box-shadow:0 0 20px rgba(63,224,255,0.15);
}
.btn-sm{padding:10px 20px;font-size:15px}

.text-link{
  color:var(--accent-1);font-weight:500;font-size:15px;
  display:inline-flex;align-items:center;gap:6px;
  transition:gap .2s ease;
}
.text-link:hover{color:var(--accent-2);gap:10px}
.text-link i{font-size:13px}

.badge{
  display:inline-block;padding:4px 14px;border-radius:999px;
  background:rgba(63,224,255,0.12);border:1px solid rgba(63,224,255,0.25);
  color:var(--accent-1);font-size:13px;font-weight:500;
}

.section-label{
  display:inline-block;font-size:14px;font-weight:600;
  color:var(--accent-1);letter-spacing:1px;margin-bottom:8px;
  text-transform:uppercase;
}
.section-title{
  font-size:34px;line-height:1.25;color:var(--text-heading);
  font-weight:700;margin-bottom:16px;letter-spacing:-0.5px;
}
.section-desc{
  font-size:17px;color:var(--text-muted);max-width:680px;line-height:1.8;
}

/* ===== Header / Nav ===== */
.site-header{
  position:relative;z-index:100;padding-top:20px;
}
.nav-panel{
  display:flex;align-items:center;gap:18px;
  background:rgba(10,20,40,0.75);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border:1px solid var(--border-card);
  border-radius:20px;
  padding:10px 18px;
  box-shadow:var(--shadow-default);
}
.brand{
  display:flex;align-items:center;gap:10px;flex-shrink:0;
  text-decoration:none;margin-right:8px;
}
.brand-icon{
  width:40px;height:40px;border-radius:12px;
  background:linear-gradient(135deg,rgba(63,224,255,0.25),rgba(0,229,204,0.2));
  border:1px solid rgba(63,224,255,0.4);
  display:flex;align-items:center;justify-content:center;
  color:var(--accent-1);font-size:18px;
}
.brand-text{
  font-size:20px;font-weight:700;color:var(--text-heading);
  white-space:nowrap;letter-spacing:0.2px;
}
.nav-links{display:flex;align-items:center;gap:6px;flex:1;justify-content:center}
.nav-link{
  display:inline-flex;align-items:center;gap:6px;
  padding:10px 16px;border-radius:12px;
  font-size:15px;font-weight:500;color:var(--text-body);
  text-decoration:none;transition:all .2s ease;
  border:1px solid transparent;
}
.nav-link i{font-size:14px;color:var(--text-muted)}
.nav-link:hover{
  color:var(--text-heading);background:rgba(255,255,255,0.06);
  border-color:rgba(255,255,255,0.08);
}
.nav-link.active{
  background:linear-gradient(135deg,rgba(63,224,255,0.18),rgba(0,229,204,0.12));
  border-color:rgba(63,224,255,0.45);
  color:var(--accent-1);
}
.nav-link.active i{color:var(--accent-1)}
.nav-cta{margin-left:auto;flex-shrink:0}
.nav-toggle{
  display:none;background:none;border:none;font-size:24px;color:var(--text-heading);
  cursor:pointer;padding:8px;border-radius:10px;
  margin-left:auto;
}
.nav-toggle:hover{background:rgba(255,255,255,0.08)}

/* ===== Hero ===== */
.hero{
  position:relative;padding:90px 0 80px;
  background:linear-gradient(to bottom,rgba(7,13,26,0.93),rgba(7,13,26,0.6)),url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  overflow:hidden;
}
.hero::before{
  content:'';position:absolute;top:-120px;right:-80px;width:400px;height:400px;
  background:radial-gradient(circle,rgba(63,224,255,0.12),transparent 70%);
  pointer-events:none;
}
.hero::after{
  content:'';position:absolute;bottom:-80px;left:10%;width:350px;height:350px;
  background:radial-gradient(circle,rgba(0,229,204,0.1),transparent 70%);
  pointer-events:none;
}
.hero-inner{display:flex;align-items:center;gap:60px;position:relative;z-index:2}
.hero-content{flex:1.1}
.hero-content h1{
  font-size:46px;line-height:1.22;color:var(--text-heading);
  font-weight:800;margin-bottom:20px;letter-spacing:-0.6px;
}
.hero-content h1 span{color:var(--accent-1)}
.hero-sub{
  font-size:18px;color:var(--text-body);line-height:1.8;
  max-width:560px;margin-bottom:32px;
}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap}
.hero-visual{
  flex:0.9;position:relative;
}
.glass-card{
  background:rgba(255,255,255,0.05);
  border:1px solid var(--border-card);
  border-radius:var(--radius-card);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  padding:18px;box-shadow:var(--shadow-default);
}
.hero-visual .glass-card img{
  border-radius:var(--radius-image);
  width:100%;height:auto;object-fit:cover;
  min-height:240px;
}
.float-stat{
  position:absolute;background:rgba(10,20,40,0.85);
  border:1px solid rgba(63,224,255,0.35);
  border-radius:16px;padding:12px 18px;
  backdrop-filter:blur(12px);
  box-shadow:var(--shadow-default);
  font-size:14px;color:var(--text-heading);
}
.float-stat strong{display:block;font-size:22px;color:var(--accent-1);font-weight:800}
.float-stat-1{top:14px;right:6px}
.float-stat-2{bottom:26px;left:-18px}

/* ===== Services ===== */
.services-section{position:relative;padding:var(--spacing-section) 0}
.services-grid{display:flex;gap:20px;margin-top:50px}
.service-main{
  flex:1.15;background:var(--bg-card);
  border:1px solid var(--border-card);
  border-radius:var(--radius-card);
  padding:40px;position:relative;overflow:hidden;
  transition:all .3s ease;
  display:flex;flex-direction:column;
}
.service-main::before{
  content:'';position:absolute;top:0;right:0;width:180px;height:180px;
  background:radial-gradient(circle,rgba(63,224,255,0.12),transparent 70%);
}
.service-main:hover,.service-side .service-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-hover);
  border-color:var(--border-card-hover);
  background:var(--bg-card-hover);
}
.service-main .service-icon{
  width:64px;height:64px;border-radius:16px;font-size:26px;
  background:linear-gradient(135deg,rgba(63,224,255,0.2),rgba(0,229,204,0.15));
  border:1px solid rgba(63,224,255,0.4);
  display:flex;align-items:center;justify-content:center;
  color:var(--accent-1);margin-bottom:22px;
}
.service-main h3{font-size:24px;color:var(--text-heading);margin-bottom:14px;font-weight:700}
.service-main p{flex:1;color:var(--text-muted);font-size:16px;line-height:1.8}
.service-side{flex:1;display:flex;flex-direction:column;gap:20px}
.service-card{
  background:var(--bg-card);border:1px solid var(--border-card);
  border-radius:var(--radius-card);padding:30px;flex:1;
  transition:all .3s ease;display:flex;flex-direction:column;
}
.service-card .service-icon{
  width:48px;height:48px;border-radius:12px;font-size:20px;
  background:rgba(255,255,255,0.06);border:1px solid rgba(255,255,255,0.12);
  display:flex;align-items:center;justify-content:center;
  color:var(--accent-2);margin-bottom:16px;
}
.service-card h3{font-size:19px;color:var(--text-heading);margin-bottom:10px;font-weight:600}
.service-card p{flex:1;color:var(--text-muted);font-size:14.5px;line-height:1.7;margin-bottom:14px}

/* ===== Stats ===== */
.stats-section{
  background:linear-gradient(135deg,var(--bg-secondary),#0D1A33);
  padding:70px 0;border-top:1px solid rgba(255,255,255,0.04);
  border-bottom:1px solid rgba(255,255,255,0.04);
  position:relative;overflow:hidden;
}
.stats-section::after{
  content:'';position:absolute;bottom:-60px;left:50%;
  width:300px;height:200px;transform:translateX(-50%);
  background:radial-gradient(ellipse,rgba(63,224,255,0.08),transparent 70%);
}
.stats-grid{display:flex;gap:30px;position:relative;z-index:2}
.stat-item{
  flex:1;text-align:center;padding:20px 10px;
}
.stat-number{
  font-size:46px;font-weight:800;color:var(--accent-1);
  font-variant-numeric:tabular-nums;
  text-shadow:0 0 30px rgba(63,224,255,0.35);
  line-height:1.2;
}
.stat-label{font-size:15px;color:var(--text-muted);margin-top:8px}

/* ===== News ===== */
.news-section{padding:var(--spacing-section) 0}
.news-section .section-head{display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:42px}
.news-grid{display:flex;flex-wrap:wrap;margin:-10px}
.news-card{
  background:var(--bg-card);border:1px solid var(--border-card);
  border-radius:var(--radius-card);padding:30px;
  transition:all .3s ease;height:100%;
  display:flex;flex-direction:column;
  margin:10px;
}
.news-card:hover{
  border-color:var(--border-card-hover);
  box-shadow:var(--shadow-hover);
  transform:translateY(-3px);
  background:var(--bg-card-hover);
}
.news-meta{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.news-date{font-size:13px;color:var(--text-muted)}
.news-card h3{font-size:18px;line-height:1.5;color:var(--text-heading);margin-bottom:12px;font-weight:600}
.news-card h3 a{color:inherit}
.news-card h3 a:hover{color:var(--accent-1)}
.news-card p{
  flex:1;font-size:14.5px;color:var(--text-muted);
  line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;
  overflow:hidden;margin-bottom:16px;
}
.empty-state{
  padding:60px 20px;text-align:center;color:var(--text-muted);
  font-size:17px;background:var(--bg-card);
  border:1px dashed var(--border-card);border-radius:var(--radius-card);
}

/* ===== Cases ===== */
.cases-section{
  background:var(--bg-secondary);
  padding:var(--spacing-section) 0;
  position:relative;overflow:hidden;
}
.cases-section::before{
  content:'';position:absolute;top:-100px;left:-60px;width:320px;height:320px;
  background:radial-gradient(circle,rgba(0,229,204,0.08),transparent 70%);
}
.case-grid{display:flex;gap:20px;margin-top:44px}
.case-card{
  flex:1;background:var(--bg-card);border:1px solid var(--border-card);
  border-radius:var(--radius-card);overflow:hidden;
  transition:all .3s ease;
}
.case-card:hover{
  transform:translateY(-4px);box-shadow:var(--shadow-hover);
  border-color:var(--border-card-hover);
}
.case-card img{width:100%;height:200px;object-fit:cover}
.case-body{padding:24px}
.case-body h3{font-size:19px;color:var(--text-heading);margin:12px 0 10px;font-weight:600}
.case-body p{font-size:14.5px;color:var(--text-muted);line-height:1.7}

/* ===== Path ===== */
.path-section{padding:var(--spacing-section) 0}
.path-layout{display:flex;gap:60px;align-items:center;margin-top:50px}
.path-visual{flex:1}
.path-visual img{border-radius:var(--radius-card);box-shadow:var(--shadow-default)}
.path-steps{flex:1}
.path-step{
  display:flex;gap:20px;padding:22px 0;
  border-bottom:1px solid rgba(255,255,255,0.06);
  position:relative;
}
.path-step:last-child{border-bottom:none}
.path-step-num{
  width:44px;height:44px;flex-shrink:0;border-radius:12px;
  background:linear-gradient(135deg,rgba(63,224,255,0.2),rgba(0,229,204,0.12));
  border:1px solid rgba(63,224,255,0.35);
  display:flex;align-items:center;justify-content:center;
  font-size:18px;font-weight:700;color:var(--accent-1);
}
.path-step h3{font-size:18px;color:var(--text-heading);font-weight:600;margin-bottom:6px}
.path-step p{font-size:14.5px;color:var(--text-muted);line-height:1.7}

/* ===== FAQ ===== */
.faq-section{
  background:var(--bg-secondary);padding:var(--spacing-section) 0;
}
.accordion-item{
  background:var(--bg-card);border:1px solid var(--border-card);
  border-radius:16px;margin-bottom:14px;overflow:hidden;
  transition:border-color .2s ease;
}
.accordion-item.is-active{border-color:rgba(63,224,255,0.4)}
.accordion-title{
  padding:20px 24px;display:flex;align-items:center;gap:14px;
  cursor:pointer;color:var(--text-heading);font-size:17px;font-weight:600;
  position:relative;
}
.accordion-title .dot{
  width:8px;height:8px;border-radius:50%;background:var(--accent-1);
  box-shadow:0 0 10px rgba(63,224,255,0.6);flex-shrink:0;
}
.accordion-title .arrow{
  margin-left:auto;font-size:14px;color:var(--text-muted);
  transition:transform .3s ease;
}
.accordion-item.is-active .arrow{transform:rotate(45deg);color:var(--accent-1)}
.accordion-content{
  display:none;padding:0 24px 22px 46px;
  color:var(--text-muted);font-size:15px;line-height:1.85;
}
.accordion-item.is-active .accordion-content{display:block}

/* ===== CTA / Contact ===== */
.contact-section{padding:var(--spacing-section) 0}
.contact-grid{display:flex;gap:50px;margin-top:50px}
.contact-form-panel{
  flex:1.2;background:var(--bg-card);
  border:1px solid var(--border-card);
  border-radius:var(--radius-card);
  padding:40px;backdrop-filter:blur(16px);
}
.contact-form-panel h3,.contact-info h3{
  font-size:22px;color:var(--text-heading);margin-bottom:22px;font-weight:700;
}
.form-group{margin-bottom:22px}
.form-group input,.form-group textarea{
  width:100%;background:rgba(255,255,255,0.06);
  border:none;border-bottom:1px solid rgba(255,255,255,0.2);
  padding:12px 16px;color:var(--text-heading);font-size:16px;
  border-radius:6px 6px 0 0;transition:all .2s ease;
}
.form-group input::placeholder,.form-group textarea::placeholder{color:var(--text-muted)}
.form-group input:focus,.form-group textarea:focus{
  outline:none;border-bottom-color:var(--accent-1);
  box-shadow:0 4px 16px rgba(63,224,255,0.15);
  background:rgba(255,255,255,0.08);
}
.form-group textarea{min-height:100px;resize:vertical}
.contact-info{flex:0.8}
.contact-info p{color:var(--text-muted);line-height:1.8;margin-bottom:28px}
.contact-item{
  display:flex;gap:16px;margin-bottom:20px;align-items:flex-start;
}
.contact-item-icon{
  width:42px;height:42px;flex-shrink:0;border-radius:12px;
  background:rgba(63,224,255,0.1);border:1px solid rgba(63,224,255,0.25);
  display:flex;align-items:center;justify-content:center;
  color:var(--accent-1);font-size:17px;
}
.contact-item strong{display:block;color:var(--text-heading);font-size:16px;margin-bottom:4px}
.contact-item span{font-size:15px;color:var(--text-body);line-height:1.5}

/* ===== Footer ===== */
.site-footer{
  background:#050910;border-top:1px solid rgba(255,255,255,0.06);
  padding:60px 0 30px;
}
.footer-grid{display:flex;gap:60px;flex-wrap:wrap;margin-bottom:50px}
.footer-brand{flex:1.4;min-width:260px}
.footer-brand .brand-text{font-size:22px}
.footer-brand p{font-size:14.5px;color:var(--text-muted);margin-top:16px;line-height:1.8}
.footer-col{flex:1;min-width:140px}
.footer-col h4{
  font-size:15px;color:var(--text-heading);font-weight:600;
  margin-bottom:16px;
}
.footer-col a{
  display:block;font-size:14px;color:var(--text-muted);
  padding:5px 0;transition:color .2s ease;
}
.footer-col a:hover{color:var(--accent-1)}
.footer-bottom{
  display:flex;justify-content:space-between;align-items:center;
  padding-top:24px;border-top:1px solid rgba(255,255,255,0.06);
  font-size:13.5px;color:var(--text-muted);
  flex-wrap:wrap;gap:12px;
}
.footer-bottom .domain{color:var(--text-muted)}

/* ===== Responsive ===== */
@media(max-width:1024px){
  :root{--spacing-section:72px}
  .hero-inner{flex-direction:column;gap:36px}
  .hero-content h1{font-size:36px}
  .hero-visual{width:100%;max-width:600px}
  .services-grid{flex-direction:column}
  .stats-grid{flex-wrap:wrap}
  .stat-item{flex:1 1 45%;margin-bottom:20px}
  .case-grid{flex-wrap:wrap}
  .case-card{flex:1 1 45%}
  .path-layout{flex-direction:column}
  .contact-grid{flex-direction:column}
  .nav-links{display:none}
  .nav-toggle{display:block}
  .nav-cta{display:none}
  .nav-panel.open .nav-links{
    display:flex;flex-direction:column;position:absolute;
    top:100%;left:24px;right:24px;
    background:rgba(10,20,40,0.97);
    backdrop-filter:blur(20px);
    border:1px solid var(--border-card);
    border-radius:20px;padding:16px;gap:10px;
    box-shadow:var(--shadow-default);
    margin-top:8px;z-index:100;
  }
  .nav-panel{position:relative}
  .nav-panel.open .nav-cta{display:block;margin-left:0;width:100%;text-align:center}
}
@media(max-width:640px){
  :root{--spacing-section:56px}
  .container{padding:0 20px}
  .brand-text{font-size:18px}
  .hero{padding:60px 0 60px}
  .hero-content h1{font-size:28px}
  .hero-sub{font-size:16px}
  .section-title{font-size:26px}
  .stats-grid{flex-direction:column}
  .stat-item{flex:1 1 100%}
  .case-card{flex:1 1 100%}
  .news-card{margin:10px 0}
  .footer-grid{gap:32px}
  .footer-bottom{flex-direction:column;text-align:center}
  .footer-brand p{font-size:13.5px}
  .contact-form-panel,.service-main,.service-card{padding:24px}
  .float-stat-1{right:-4px}
  .float-stat-2{left:-4px}
}

/* roulang page: category1 */
:root {
      --bg-primary: #070D1A;
      --bg-secondary: #0A1428;
      --bg-deep: #050A14;
      --bg-card: rgba(255, 255, 255, 0.05);
      --border-card: rgba(255, 255, 255, 0.12);
      --accent-1: #3FE0FF;
      --accent-2: #00E5CC;
      --amber: #FFC55A;
      --text-primary: #E6F6FF;
      --text-secondary: #8FA7C3;
      --text-body: #C8D6E8;
      --radius-card: 20px;
      --radius-normal: 16px;
      --radius-img: 12px;
      --radius-btn: 12px;
      --shadow-default: 0 8px 24px rgba(0, 0, 0, 0.30);
      --shadow-hover: 0 16px 40px rgba(63, 224, 255, 0.16);
      --spacing-section: 100px;
      --spacing-section-md: 72px;
      --spacing-section-sm: 56px;
      --font-stack: Inter, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      font-family: var(--font-stack);
      background: var(--bg-primary);
      color: var(--text-body);
      font-size: 17px;
      line-height: 1.8;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

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

    a {
      color: var(--accent-1);
      text-decoration: none;
      transition: color 0.3s ease;
    }

    a:hover {
      color: #55E6FF;
    }

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

    h1, h2, h3, h4, h5 {
      color: var(--text-primary);
      margin: 0 0 16px;
      line-height: 1.3;
      font-weight: 700;
    }

    h1 {
      font-size: 44px;
      letter-spacing: -0.5px;
    }

    h2 {
      font-size: 32px;
    }

    h3 {
      font-size: 21px;
    }

    p {
      margin: 0 0 16px;
    }

    .section {
      padding: var(--spacing-section) 0;
      position: relative;
    }

    .section-head {
      max-width: 760px;
      margin-bottom: 48px;
    }

    .section-head.center {
      margin-left: auto;
      margin-right: auto;
      text-align: center;
    }

    .section-sub {
      font-size: 18px;
      color: var(--text-secondary);
      margin-top: 8px;
    }

    .section-divider {
      width: 56px;
      height: 3px;
      background: linear-gradient(90deg, var(--accent-1), var(--accent-2));
      border-radius: 4px;
      margin: 18px 0 0;
    }

    .section-head.center .section-divider {
      margin-left: auto;
      margin-right: auto;
    }

    /* ===== Buttons ===== */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      font-family: var(--font-stack);
      font-size: 16px;
      font-weight: 600;
      padding: 14px 32px;
      border-radius: var(--radius-btn);
      border: 0;
      cursor: pointer;
      transition: all 0.3s ease;
      text-decoration: none;
      line-height: 1.4;
    }

    .btn:focus-visible,
    a:focus-visible,
    input:focus-visible,
    textarea:focus-visible,
    button:focus-visible {
      outline: 2px solid var(--accent-1);
      outline-offset: 2px;
    }

    .btn-primary {
      background: linear-gradient(135deg, var(--accent-1), var(--accent-2));
      color: #06121F;
      box-shadow: 0 0 20px rgba(63, 224, 255, 0.25);
    }

    .btn-primary:hover {
      box-shadow: 0 0 28px rgba(63, 224, 255, 0.5);
      transform: translateY(-1px);
      color: #06121F;
      background: linear-gradient(135deg, #55E6FF, #00F2D8);
    }

    .btn-outline {
      background: transparent;
      border: 1px solid var(--accent-1);
      color: var(--accent-1);
      padding: 13px 30px;
    }

    .btn-outline:hover {
      background: rgba(63, 224, 255, 0.08);
      border-color: #55E6FF;
      color: #55E6FF;
      transform: translateY(-1px);
    }

    .btn-sm {
      padding: 10px 22px;
      font-size: 14px;
      border-radius: 10px;
    }

    .btn-lg {
      padding: 16px 40px;
      font-size: 17px;
    }

    /* ===== Header / Nav ===== */
    .site-header {
      position: relative;
      z-index: 100;
      padding-top: 18px;
    }

    .nav-panel {
      display: flex;
      align-items: center;
      gap: 16px;
      background: rgba(10, 20, 40, 0.82);
      border: 1px solid var(--border-card);
      border-radius: var(--radius-card);
      padding: 10px 18px;
      backdrop-filter: blur(18px);
      -webkit-backdrop-filter: blur(18px);
      box-shadow: var(--shadow-default);
    }

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      flex-shrink: 0;
      color: var(--text-primary);
      font-weight: 800;
      font-size: 20px;
      letter-spacing: 0.5px;
      text-decoration: none;
    }

    .brand:hover {
      color: var(--text-primary);
    }

    .brand-icon {
      width: 38px;
      height: 38px;
      border-radius: 12px;
      background: linear-gradient(135deg, var(--accent-1), var(--accent-2));
      display: inline-flex;
      align-items: center;
      justify-content: center;
      color: #06121F;
      font-size: 18px;
      box-shadow: 0 0 14px rgba(63, 224, 255, 0.4);
      flex-shrink: 0;
    }

    .brand-text {
      white-space: nowrap;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 8px;
      margin-left: auto;
      flex-wrap: wrap;
    }

    .nav-link {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      padding: 10px 18px;
      border-radius: 12px;
      color: var(--text-secondary);
      font-size: 15px;
      font-weight: 500;
      text-decoration: none;
      border: 1px solid transparent;
      transition: all 0.25s ease;
      white-space: nowrap;
    }

    .nav-link i {
      font-size: 14px;
      opacity: 0.85;
    }

    .nav-link:hover {
      color: var(--text-primary);
      background: rgba(255, 255, 255, 0.06);
      border-color: rgba(255, 255, 255, 0.08);
    }

    .nav-link.active {
      color: var(--accent-1);
      background: rgba(63, 224, 255, 0.10);
      border-color: rgba(63, 224, 255, 0.35);
      box-shadow: 0 0 16px rgba(63, 224, 255, 0.12);
    }

    .nav-cta {
      flex-shrink: 0;
    }

    .nav-toggle {
      display: none;
      width: 44px;
      height: 44px;
      border-radius: 12px;
      background: rgba(255, 255, 255, 0.06);
      border: 1px solid var(--border-card);
      color: var(--text-primary);
      font-size: 18px;
      cursor: pointer;
      align-items: center;
      justify-content: center;
      transition: all 0.25s ease;
      flex-shrink: 0;
    }

    .nav-toggle:hover {
      background: rgba(255, 255, 255, 0.12);
      border-color: rgba(63, 224, 255, 0.4);
    }

    /* ===== Page Hero (Category) ===== */
    .page-hero {
      padding: 80px 0 64px;
      background: linear-gradient(180deg, rgba(5, 10, 20, 0.92) 0%, rgba(7, 13, 26, 0.85) 100%),
        url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
      position: relative;
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    }

    .page-hero::after {
      content: '';
      position: absolute;
      right: -120px;
      top: -80px;
      width: 420px;
      height: 420px;
      background: radial-gradient(circle, rgba(63, 224, 255, 0.18) 0%, transparent 70%);
      pointer-events: none;
    }

    .page-hero-inner {
      position: relative;
      z-index: 2;
      max-width: 800px;
    }

    .breadcrumb {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 8px;
      font-size: 14px;
      color: var(--text-secondary);
      margin-bottom: 20px;
    }

    .breadcrumb a {
      color: var(--text-secondary);
      text-decoration: none;
      transition: color 0.2s;
    }

    .breadcrumb a:hover {
      color: var(--accent-1);
    }

    .breadcrumb .sep {
      color: rgba(255, 255, 255, 0.3);
    }

    .breadcrumb .current {
      color: var(--accent-1);
    }

    .page-hero h1 {
      font-size: 42px;
      margin-bottom: 18px;
      line-height: 1.25;
    }

    .page-hero h1 .grad {
      background: linear-gradient(135deg, var(--accent-1), var(--accent-2));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }

    .page-hero-desc {
      font-size: 18px;
      line-height: 1.8;
      color: var(--text-body);
      max-width: 660px;
      margin-bottom: 0;
    }

    .page-hero-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 28px;
    }

    .hero-tag {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 7px 16px;
      border-radius: 999px;
      background: rgba(63, 224, 255, 0.10);
      border: 1px solid rgba(63, 224, 255, 0.25);
      color: var(--accent-1);
      font-size: 13px;
      font-weight: 500;
    }

    /* ===== Service Ability ===== */
    .service-section {
      background: var(--bg-primary);
    }

    .service-grid {
      display: flex;
      flex-wrap: wrap;
      margin: -12px;
    }

    .service-col {
      padding: 12px;
    }

    .service-card {
      background: var(--bg-card);
      border: 1px solid var(--border-card);
      border-radius: var(--radius-card);
      padding: 36px 32px;
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      box-shadow: var(--shadow-default);
      transition: all 0.35s ease;
      height: 100%;
      position: relative;
      overflow: hidden;
    }

    .service-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 2px;
      background: linear-gradient(90deg, var(--accent-1), var(--accent-2));
      opacity: 0;
      transition: opacity 0.35s ease;
    }

    .service-card:hover {
      border-color: rgba(63, 224, 255, 0.4);
      box-shadow: var(--shadow-hover);
      transform: translateY(-4px);
    }

    .service-card:hover::before {
      opacity: 1;
    }

    .service-card.featured {
      background: linear-gradient(145deg, rgba(10, 20, 40, 0.9), rgba(7, 13, 26, 0.7));
    }

    .service-icon {
      width: 54px;
      height: 54px;
      border-radius: 16px;
      background: linear-gradient(135deg, rgba(63, 224, 255, 0.18), rgba(0, 229, 204, 0.14));
      border: 1px solid rgba(63, 224, 255, 0.3);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 22px;
      color: var(--accent-1);
      margin-bottom: 22px;
      box-shadow: 0 0 18px rgba(63, 224, 255, 0.1);
    }

    .service-card h3 {
      font-size: 21px;
      margin-bottom: 12px;
    }

    .service-card p {
      font-size: 15px;
      color: var(--text-secondary);
      line-height: 1.7;
      margin-bottom: 18px;
    }

    .service-points {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }

    .service-point {
      display: inline-flex;
      align-items: center;
      gap: 5px;
      padding: 5px 14px;
      border-radius: 999px;
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.1);
      color: var(--text-body);
      font-size: 13px;
      font-weight: 500;
    }

    .service-point i {
      color: var(--accent-2);
      font-size: 11px;
    }

    /* ===== Timeline ===== */
    .timeline-section {
      background: linear-gradient(180deg, var(--bg-primary) 0%, rgba(10, 20, 40, 0.55) 100%),
        url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    }

    .timeline-wrap {
      display: flex;
      flex-wrap: wrap;
      margin: 0 -15px;
      position: relative;
    }

    .timeline-item {
      padding: 0 15px;
      position: relative;
      flex: 0 0 25%;
      max-width: 25%;
    }

    .timeline-item-inner {
      text-align: left;
      position: relative;
      padding-top: 70px;
      height: 100%;
    }

    .timeline-item-inner::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 2px;
      background: linear-gradient(90deg, rgba(63, 224, 255, 0.5), rgba(0, 229, 204, 0.25));
      border-radius: 2px;
    }

    .timeline-num {
      position: absolute;
      top: -18px;
      left: 0;
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: var(--bg-secondary);
      border: 2px solid var(--accent-1);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--accent-1);
      font-weight: 800;
      font-size: 15px;
      box-shadow: 0 0 18px rgba(63, 224, 255, 0.25);
      z-index: 2;
    }

    .timeline-item h3 {
      font-size: 19px;
      margin-bottom: 10px;
    }

    .timeline-item p {
      font-size: 14px;
      color: var(--text-secondary);
      line-height: 1.7;
      margin-bottom: 0;
    }

    /* ===== Stats ===== */
    .stats-section {
      background: var(--bg-secondary);
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      border-bottom: 1px solid rgba(255, 255, 255, 0.05);
      padding: 70px 0;
    }

    .stats-grid {
      display: flex;
      flex-wrap: wrap;
      margin: -20px;
    }

    .stat-item {
      flex: 0 0 25%;
      max-width: 25%;
      padding: 20px;
      text-align: center;
    }

    .stat-num {
      font-size: 52px;
      font-weight: 800;
      line-height: 1.1;
      color: transparent;
      background: linear-gradient(135deg, var(--accent-1), var(--accent-2));
      -webkit-background-clip: text;
      background-clip: text;
      font-variant-numeric: tabular-nums;
      text-shadow: 0 0 32px rgba(63, 224, 255, 0.2);
    }

    .stat-label {
      font-size: 14px;
      color: var(--text-secondary);
      margin-top: 10px;
      letter-spacing: 1px;
    }

    /* ===== Scenario ===== */
    .scenario-section {
      background: var(--bg-primary);
    }

    .scenario-grid {
      display: flex;
      flex-wrap: wrap;
      margin: -12px;
    }

    .scenario-card {
      padding: 12px;
      flex: 0 0 50%;
      max-width: 50%;
    }

    .scenario-inner {
      position: relative;
      border-radius: var(--radius-card);
      overflow: hidden;
      height: 100%;
      min-height: 280px;
      border: 1px solid var(--border-card);
      box-shadow: var(--shadow-default);
      transition: all 0.35s ease;
    }

    .scenario-inner:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
      border-color: rgba(63, 224, 255, 0.35);
    }

    .scenario-inner img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      position: absolute;
      inset: 0;
    }

    .scenario-overlay {
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, rgba(5, 10, 20, 0.1) 0%, rgba(5, 10, 20, 0.88) 100%);
      display: flex;
      flex-direction: column;
      justify-content: flex-end;
      padding: 28px;
    }

    .scenario-tag {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      width: fit-content;
      padding: 5px 14px;
      border-radius: 999px;
      background: rgba(255, 197, 90, 0.15);
      border: 1px solid rgba(255, 197, 90, 0.35);
      color: var(--amber);
      font-size: 13px;
      font-weight: 600;
      margin-bottom: 12px;
    }

    .scenario-overlay h3 {
      font-size: 21px;
      margin-bottom: 8px;
    }

    .scenario-overlay p {
      font-size: 14px;
      color: var(--text-body);
      line-height: 1.7;
      margin-bottom: 0;
      max-width: 90%;
    }

    /* ===== FAQ ===== */
    .faq-section {
      background: linear-gradient(180deg, var(--bg-primary) 0%, rgba(10, 20, 40, 0.6) 100%);
    }

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

    .accordion {
      list-style: none;
      margin: 0;
      padding: 0;
      background: transparent;
      border: 0;
    }

    .accordion .accordion-item {
      background: rgba(255, 255, 255, 0.045);
      border: 1px solid var(--border-card);
      border-radius: var(--radius-normal);
      margin-bottom: 14px;
      overflow: hidden;
      transition: border-color 0.3s ease;
    }

    .accordion .accordion-item.is-active {
      border-color: rgba(63, 224, 255, 0.35);
      box-shadow: 0 0 20px rgba(63, 224, 255, 0.08);
    }

    .accordion .accordion-title {
      background: transparent;
      border: 0;
      color: var(--text-primary);
      padding: 20px 56px 20px 24px;
      font-size: 16px;
      font-weight: 600;
      line-height: 1.6;
      display: block;
      position: relative;
      transition: color 0.2s;
    }

    .accordion .accordion-title:hover {
      color: var(--accent-1);
      background: rgba(255, 255, 255, 0.03);
    }

    .accordion .accordion-title::before {
      content: '';
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--accent-1);
      box-shadow: 0 0 10px rgba(63, 224, 255, 0.6);
      display: inline-block;
      margin-right: 14px;
      vertical-align: middle;
      position: static;
    }

    .accordion .accordion-title::after {
      content: '\f078';
      font-family: 'Font Awesome 6 Free';
      font-weight: 900;
      position: absolute;
      right: 24px;
      top: 50%;
      transform: translateY(-50%);
      color: var(--accent-1);
      font-size: 14px;
      transition: transform 0.3s ease;
    }

    .accordion .accordion-item.is-active .accordion-title::after {
      transform: translateY(-50%) rotate(180deg);
    }

    .accordion .accordion-content {
      background: transparent;
      border: 0;
      padding: 0 24px 24px 46px;
      color: var(--text-secondary);
      font-size: 15px;
      line-height: 1.8;
    }

    .accordion .accordion-content p {
      margin-bottom: 0;
    }

    /* ===== CTA / Contact ===== */
    .cta-section {
      background: var(--bg-secondary);
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      position: relative;
      overflow: hidden;
    }

    .cta-section::before {
      content: '';
      position: absolute;
      bottom: -160px;
      left: -100px;
      width: 460px;
      height: 460px;
      background: radial-gradient(circle, rgba(63, 224, 255, 0.12) 0%, transparent 70%);
      pointer-events: none;
    }

    .cta-card {
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid var(--border-card);
      border-radius: var(--radius-card);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      box-shadow: var(--shadow-default);
      padding: 48px;
      position: relative;
      z-index: 2;
    }

    .cta-left h2 {
      font-size: 30px;
      margin-bottom: 14px;
    }

    .cta-left p {
      color: var(--text-secondary);
      font-size: 16px;
      line-height: 1.7;
      margin-bottom: 0;
    }

    .cta-contact-list {
      margin-top: 28px;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    .cta-contact-item {
      display: flex;
      align-items: center;
      gap: 14px;
      color: var(--text-body);
      font-size: 15px;
    }

    .cta-contact-item i {
      width: 40px;
      height: 40px;
      border-radius: 12px;
      background: rgba(63, 224, 255, 0.12);
      border: 1px solid rgba(63, 224, 255, 0.25);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      color: var(--accent-1);
      font-size: 16px;
      flex-shrink: 0;
    }

    .cta-contact-item a {
      color: var(--text-body);
      text-decoration: none;
      transition: color 0.2s;
    }

    .cta-contact-item a:hover {
      color: var(--accent-1);
    }

    .contact-form {
      margin-top: 0;
    }

    .form-row {
      margin-bottom: 20px;
    }

    .form-label {
      display: block;
      font-size: 14px;
      font-weight: 600;
      color: var(--text-primary);
      margin-bottom: 8px;
      letter-spacing: 0.5px;
    }

    .form-control {
      width: 100%;
      padding: 13px 18px;
      background: rgba(255, 255, 255, 0.06);
      border: 1px solid transparent;
      border-bottom: 1px solid rgba(255, 255, 255, 0.18);
      border-radius: 10px;
      color: var(--text-primary);
      font-size: 15px;
      font-family: var(--font-stack);
      transition: all 0.3s ease;
      outline: none;
    }

    .form-control::placeholder {
      color: var(--text-secondary);
    }

    .form-control:focus {
      border-color: var(--accent-1);
      box-shadow: 0 0 0 3px rgba(63, 224, 255, 0.12), 0 0 20px rgba(63, 224, 255, 0.08);
      background: rgba(255, 255, 255, 0.08);
    }

    textarea.form-control {
      min-height: 110px;
      resize: vertical;
    }

    .form-note {
      font-size: 13px;
      color: var(--text-secondary);
      margin-top: 12px;
    }

    /* ===== Footer ===== */
    .site-footer {
      background: var(--bg-deep);
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      padding: 60px 0 32px;
    }

    .footer-grid {
      display: flex;
      flex-wrap: wrap;
      margin: 0 -20px;
      padding-bottom: 40px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    }

    .footer-brand {
      flex: 0 0 38%;
      max-width: 38%;
      padding: 0 20px;
    }

    .footer-brand .brand {
      margin-bottom: 14px;
    }

    .footer-brand p {
      font-size: 14px;
      color: var(--text-secondary);
      line-height: 1.7;
      margin-top: 10px;
      max-width: 340px;
    }

    .footer-col {
      flex: 0 0 20%;
      max-width: 20%;
      padding: 0 20px;
    }

    .footer-col h4 {
      font-size: 15px;
      color: var(--text-primary);
      margin-bottom: 16px;
      font-weight: 600;
      letter-spacing: 0.5px;
    }

    .footer-col a {
      display: block;
      color: var(--text-secondary);
      font-size: 14px;
      text-decoration: none;
      padding: 5px 0;
      transition: color 0.2s, padding-left 0.2s;
    }

    .footer-col a:hover {
      color: var(--accent-1);
      padding-left: 4px;
    }

    .footer-bottom {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: space-between;
      gap: 10px;
      padding-top: 28px;
      font-size: 13px;
      color: var(--text-secondary);
    }

    .footer-bottom .domain {
      font-family: monospace;
      letter-spacing: 0.5px;
      color: rgba(255, 255, 255, 0.35);
    }

    /* ===== Responsive ===== */
    @media screen and (max-width: 1024px) {
      .section {
        padding: var(--spacing-section-md) 0;
      }

      h1 {
        font-size: 36px;
      }

      .page-hero h1 {
        font-size: 34px;
      }

      .nav-panel {
        flex-wrap: wrap;
      }

      .nav-links {
        display: none;
        width: 100%;
        flex-direction: column;
        align-items: stretch;
        gap: 6px;
        padding: 12px 0 4px;
      }

      .nav-links.open {
        display: flex;
      }

      .nav-link {
        justify-content: flex-start;
        padding: 12px 16px;
      }

      .nav-toggle {
        display: inline-flex;
        margin-left: auto;
      }

      .stat-num {
        font-size: 40px;
      }

      .stat-item {
        flex: 0 0 50%;
        max-width: 50%;
      }

      .timeline-item {
        flex: 0 0 50%;
        max-width: 50%;
        margin-bottom: 50px;
      }

      .timeline-item:nth-child(2n) .timeline-item-inner::before {
        left: 0;
        right: auto;
        width: 50%;
      }

      .scenario-card {
        flex: 0 0 100%;
        max-width: 100%;
      }

      .footer-brand {
        flex: 0 0 100%;
        max-width: 100%;
        margin-bottom: 24px;
      }

      .footer-col {
        flex: 0 0 33.333%;
        max-width: 33.333%;
        margin-bottom: 20px;
      }

      .cta-card {
        padding: 32px;
      }
    }

    @media screen and (max-width: 640px) {
      body {
        font-size: 16px;
      }

      .container {
        padding-left: 20px;
        padding-right: 20px;
      }

      .section {
        padding: var(--spacing-section-sm) 0;
      }

      h1 {
        font-size: 28px;
      }

      h2 {
        font-size: 26px;
      }

      .section-head {
        margin-bottom: 32px;
      }

      .brand-text {
        font-size: 17px;
      }

      .brand-icon {
        width: 34px;
        height: 34px;
        font-size: 15px;
      }

      .nav-panel {
        padding: 8px 12px;
      }

      .nav-cta {
        display: none;
      }

      .page-hero {
        padding: 56px 0 44px;
      }

      .page-hero h1 {
        font-size: 26px;
        line-height: 1.3;
      }

      .page-hero-desc {
        font-size: 16px;
      }

      .hero-tag {
        font-size: 12px;
        padding: 6px 12px;
      }

      .service-card {
        padding: 28px 22px;
      }

      .service-col {
        padding: 8px;
      }

      .service-col.large-5,
      .service-col.large-7,
      .service-col.large-4,
      .service-col.large-8 {
        flex: 0 0 100%;
        max-width: 100%;
      }

      .timeline-item {
        flex: 0 0 100%;
        max-width: 100%;
        margin-bottom: 40px;
      }

      .timeline-item-inner::before {
        left: 0 !important;
        right: 0 !important;
        width: 100% !important;
      }

      .stats-grid {
        margin: -10px;
      }

      .stat-item {
        flex: 0 0 50%;
        max-width: 50%;
        padding: 10px;
      }

      .stat-num {
        font-size: 34px;
      }

      .stat-label {
        font-size: 13px;
      }

      .scenario-inner {
        min-height: 220px;
      }

      .scenario-overlay {
        padding: 20px;
      }

      .cta-card {
        padding: 24px;
      }

      .cta-left h2 {
        font-size: 24px;
      }

      .form-control {
        font-size: 14px;
      }

      .footer-col {
        flex: 0 0 50%;
        max-width: 50%;
        padding: 0 12px;
      }

      .footer-brand {
        padding: 0 12px;
      }

      .footer-grid {
        margin: 0 -12px;
      }

      .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
        gap: 4px;
        font-size: 12px;
      }

      .btn-lg {
        padding: 14px 28px;
        font-size: 15px;
      }
    }

    @media screen and (max-width: 420px) {
      .footer-col {
        flex: 0 0 100%;
        max-width: 100%;
      }
    }

/* roulang page: article */
:root {
  --bg: #070D1A;
  --bg-deep: #050A14;
  --bg-soft: #0B1630;
  --panel: rgba(255, 255, 255, 0.05);
  --panel-strong: rgba(255, 255, 255, 0.09);
  --border: rgba(255, 255, 255, 0.12);
  --border-light: rgba(255, 255, 255, 0.08);
  --accent: #3FE0FF;
  --accent-2: #00E5CC;
  --amber: #FFC55A;
  --text: #C8D6E8;
  --text-bright: #E6F6FF;
  --text-muted: #8FA7C3;
  --radius-lg: 20px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --shadow: 0 8px 24px rgba(0, 0, 0, 0.30);
  --shadow-glow: 0 16px 40px rgba(63, 224, 255, 0.16);
  --font: Inter, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  --transition: 0.25s ease;
}
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img {
  max-width: 100%;
  display: block;
}
a {
  color: var(--accent);
  text-decoration: none;
  transition: color var(--transition);
}
a:hover {
  color: var(--accent-2);
}
button, input, textarea, select {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}
ul, ol {
  list-style-position: inside;
}
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}
.row {
  max-width: 1200px;
  margin: 0 auto;
}
.row .row {
  max-width: none;
  margin: 0;
}

/* Focus */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ===== Header & Nav ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 200;
  background: rgba(7, 13, 26, 0.86);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-light);
  padding: 14px 0 16px;
}
.nav-panel {
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 8px 14px;
  box-shadow: var(--shadow);
  position: relative;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.brand-icon {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #0A1428;
  font-size: 18px;
  box-shadow: 0 0 18px rgba(63, 224, 255, 0.45);
}
.brand-text {
  font-size: 19px;
  font-weight: 700;
  color: var(--text-bright);
  letter-spacing: 0.5px;
  white-space: nowrap;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-left: auto;
  flex-wrap: nowrap;
  overflow-x: auto;
  scrollbar-width: none;
}
.nav-links::-webkit-scrollbar {
  display: none;
}
.nav-link {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: 12px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text);
  border: 1px solid transparent;
  transition: all var(--transition);
  white-space: nowrap;
}
.nav-link i {
  font-size: 13px;
  opacity: 0.8;
}
.nav-link:hover {
  color: var(--text-bright);
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.1);
}
.nav-link.active {
  color: var(--text-bright);
  background: linear-gradient(135deg, rgba(63, 224, 255, 0.18), rgba(0, 229, 204, 0.12));
  border-color: rgba(63, 224, 255, 0.45);
  box-shadow: 0 0 14px rgba(63, 224, 255, 0.18);
}
.nav-cta {
  flex-shrink: 0;
}
.nav-toggle {
  display: none;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border);
  color: var(--text-bright);
  width: 42px;
  height: 42px;
  border-radius: 12px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  transition: all var(--transition);
}
.nav-toggle:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: var(--accent);
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 30px;
  border-radius: 50px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
}
.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #081020;
  box-shadow: 0 4px 20px rgba(63, 224, 255, 0.35);
}
.btn-primary:hover {
  background: linear-gradient(135deg, #2dd4f5, #00e0c0);
  color: #081020;
  transform: translateY(-1px);
  box-shadow: 0 0 24px rgba(63, 224, 255, 0.5);
}
.btn-outline {
  background: transparent;
  border-color: rgba(63, 224, 255, 0.6);
  color: var(--accent);
}
.btn-outline:hover {
  background: rgba(63, 224, 255, 0.1);
  color: var(--accent-2);
  border-color: var(--accent-2);
}
.btn-sm {
  padding: 8px 18px;
  font-size: 13px;
  border-radius: 30px;
}
.btn-lg {
  padding: 16px 38px;
  font-size: 16px;
}

/* ===== Article Hero ===== */
.article-hero {
  position: relative;
  background: linear-gradient(180deg, rgba(5, 10, 20, 0.80) 0%, rgba(7, 13, 26, 0.95) 100%), url('/assets/images/backpic/back-1.png') center / cover no-repeat;
  padding: 70px 0 60px;
  border-bottom: 1px solid var(--border-light);
}
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 36px;
}
.breadcrumb a {
  color: var(--text-muted);
  transition: color var(--transition);
}
.breadcrumb a:hover {
  color: var(--accent);
}
.breadcrumb .sep {
  color: rgba(255, 255, 255, 0.3);
  font-size: 12px;
}
.breadcrumb .current {
  color: var(--accent);
}
.breadcrumb .current-title {
  color: var(--text);
  max-width: 280px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.article-hero-inner {
  max-width: 860px;
}
.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 18px;
}
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 30px;
  background: rgba(63, 224, 255, 0.12);
  border: 1px solid rgba(63, 224, 255, 0.3);
  color: var(--accent);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.3px;
}
.tag-brand {
  background: linear-gradient(135deg, rgba(63, 224, 255, 0.2), rgba(0, 229, 204, 0.14));
  border-color: rgba(0, 229, 204, 0.35);
  color: var(--text-bright);
}
.article-hero h1 {
  font-size: 42px;
  line-height: 1.25;
  color: var(--text-bright);
  font-weight: 800;
  letter-spacing: 0.5px;
  margin-bottom: 20px;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.4);
}
.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 22px;
  font-size: 14px;
  color: var(--text-muted);
}
.meta-item {
  display: flex;
  align-items: center;
  gap: 7px;
}
.meta-item i {
  color: var(--accent);
}

/* ===== Article Main ===== */
.article-section {
  padding: 70px 0 50px;
  background: var(--bg);
}
.article-main {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 48px 52px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}
.article-content {
  font-size: 17px;
  line-height: 1.85;
  color: var(--text);
  word-break: break-word;
}
.article-content > * + * {
  margin-top: 24px;
}
.article-content p {
  margin-bottom: 24px;
}
.article-content h2 {
  font-size: 27px;
  font-weight: 700;
  color: var(--text-bright);
  margin-top: 44px;
  margin-bottom: 18px;
  padding-left: 16px;
  border-left: 3px solid var(--accent);
}
.article-content h3 {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-bright);
  margin-top: 36px;
  margin-bottom: 14px;
}
.article-content h4 {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-bright);
  margin-top: 28px;
  margin-bottom: 12px;
}
.article-content ul,
.article-content ol {
  margin: 0 0 24px 20px;
  color: var(--text);
}
.article-content ul li,
.article-content ol li {
  margin-bottom: 8px;
  padding-left: 4px;
}
.article-content ul li::marker {
  color: var(--accent);
}
.article-content ol li::marker {
  color: var(--accent);
  font-weight: 600;
}
.article-content img {
  max-width: 100%;
  border-radius: var(--radius-sm);
  margin: 32px auto;
  display: block;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
}
.article-content blockquote {
  border-left: 3px solid var(--accent);
  background: rgba(63, 224, 255, 0.07);
  padding: 18px 26px;
  margin: 28px 0;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--text-bright);
  font-style: normal;
}
.article-content blockquote p {
  margin-bottom: 0;
}
.article-content a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.article-content a:hover {
  color: var(--accent-2);
}
.article-content table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  margin: 28px 0;
  background: rgba(255, 255, 255, 0.02);
  font-size: 15px;
}
.article-content table th {
  background: rgba(63, 224, 255, 0.14);
  color: var(--text-bright);
  padding: 13px 16px;
  text-align: left;
  font-weight: 600;
  border-bottom: 1px solid rgba(63, 224, 255, 0.2);
}
.article-content table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-light);
  color: var(--text);
}
.article-content table tr:last-child td {
  border-bottom: none;
}
.article-content table tr:hover td {
  background: rgba(63, 224, 255, 0.04);
}
.article-content code {
  background: rgba(255, 255, 255, 0.1);
  padding: 2px 8px;
  border-radius: 6px;
  font-size: 14px;
  color: var(--accent);
  font-family: "SF Mono", "Consolas", monospace;
}
.article-content hr {
  border: none;
  border-top: 1px solid var(--border-light);
  margin: 40px 0;
}

/* ===== Article Empty ===== */
.article-empty {
  text-align: center;
  padding: 70px 30px;
}
.article-empty i {
  font-size: 50px;
  color: var(--text-muted);
  margin-bottom: 20px;
}
.article-empty h2 {
  color: var(--text-bright);
  font-size: 26px;
  margin-bottom: 12px;
}
.article-empty p {
  color: var(--text-muted);
  margin-bottom: 30px;
}

/* ===== Article Pager ===== */
.article-pager {
  display: flex;
  gap: 16px;
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--border-light);
  flex-wrap: wrap;
}
.pager-link {
  display: flex;
  align-items: center;
  gap: 14px;
  flex: 1;
  min-width: 220px;
  padding: 16px 20px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  transition: all var(--transition);
}
.pager-link:hover {
  background: rgba(63, 224, 255, 0.07);
  border-color: rgba(63, 224, 255, 0.35);
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}
.pager-label {
  font-size: 12px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
}
.pager-label i {
  color: var(--accent);
}
.pager-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-bright);
}
.pager-link.pager-next {
  text-align: right;
  flex-direction: row-reverse;
}

/* ===== Article Back ===== */
.article-back {
  margin-top: 28px;
  text-align: center;
}
.article-back a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-muted);
  border: 1px solid var(--border);
  padding: 10px 22px;
  border-radius: 30px;
  transition: all var(--transition);
}
.article-back a:hover {
  color: var(--accent);
  border-color: rgba(63, 224, 255, 0.4);
  background: rgba(63, 224, 255, 0.06);
}

/* ===== Related Section ===== */
.related-section {
  padding: 80px 0 70px;
  background: linear-gradient(180deg, var(--bg) 0%, var(--bg-soft) 100%);
  border-top: 1px solid var(--border-light);
}
.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 40px;
}
.section-head h2 {
  font-size: 32px;
  color: var(--text-bright);
  font-weight: 800;
  position: relative;
}
.section-head h2::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 0;
  width: 48px;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  border-radius: 3px;
}
.section-head p {
  color: var(--text-muted);
  font-size: 15px;
}
.related-col {
  margin-bottom: 24px;
}
.related-card {
  display: flex;
  flex-direction: column;
  height: 100%;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition);
  box-shadow: var(--shadow);
}
.related-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-glow);
  border-color: rgba(63, 224, 255, 0.35);
}
.related-img {
  height: 180px;
  overflow: hidden;
}
.related-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.related-card:hover .related-img img {
  transform: scale(1.05);
}
.related-body {
  padding: 22px 24px 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex: 1;
}
.related-body .tag {
  align-self: flex-start;
}
.related-body h3 {
  font-size: 19px;
  font-weight: 700;
  color: var(--text-bright);
  line-height: 1.4;
}
.related-body p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 6px;
}
.related-more {
  margin-top: auto;
  font-size: 14px;
  color: var(--accent);
  display: flex;
  align-items: center;
  gap: 6px;
}

/* ===== CTA Section ===== */
.cta-section {
  padding: 80px 0;
  position: relative;
  background: var(--bg-deep);
  border-top: 1px solid var(--border-light);
}
.cta-panel {
  position: relative;
  text-align: center;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 28px;
  padding: 60px 40px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  overflow: hidden;
}
.cta-panel::before {
  content: '';
  position: absolute;
  top: -60%;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 300px;
  background: radial-gradient(closest-side, rgba(63, 224, 255, 0.16), transparent);
  pointer-events: none;
}
.cta-panel h2 {
  font-size: 34px;
  font-weight: 800;
  color: var(--text-bright);
  margin-bottom: 16px;
}
.cta-panel p {
  font-size: 17px;
  color: var(--text-muted);
  max-width: 560px;
  margin: 0 auto 36px;
}
.cta-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--bg-deep);
  border-top: 1px solid rgba(255, 255, 255, 0.07);
  padding: 60px 0 20px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-brand .brand {
  margin-bottom: 16px;
}
.footer-brand p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
  max-width: 300px;
}
.footer-col h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-bright);
  margin-bottom: 18px;
  letter-spacing: 0.3px;
}
.footer-col a {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 12px;
  transition: all var(--transition);
}
.footer-col a:hover {
  color: var(--accent);
  transform: translateX(3px);
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.07);
  padding-top: 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 13px;
  color: var(--text-muted);
}
.footer-bottom .domain {
  color: rgba(255, 255, 255, 0.35);
  font-size: 12px;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .article-hero h1 {
    font-size: 34px;
  }
  .article-main {
    padding: 36px 32px;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
  .nav-link {
    font-size: 13px;
    padding: 7px 10px;
  }
  .brand-text {
    font-size: 16px;
  }
}
@media (max-width: 768px) {
  .nav-panel {
    flex-wrap: wrap;
  }
  .nav-links {
    display: none;
    position: absolute;
    top: calc(100% + 10px);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    background: rgba(10, 20, 40, 0.98);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 14px;
    gap: 8px;
    box-shadow: var(--shadow);
  }
  .nav-links.open {
    display: flex;
  }
  .nav-link {
    justify-content: flex-start;
    padding: 12px 14px;
    font-size: 15px;
  }
  .nav-toggle {
    display: flex;
    margin-left: auto;
  }
  .nav-cta {
    display: none;
  }
  .article-hero {
    padding: 50px 0 40px;
  }
  .article-hero h1 {
    font-size: 28px;
  }
  .article-main {
    padding: 28px 22px;
    border-radius: var(--radius-md);
  }
  .article-content {
    font-size: 16px;
  }
  .article-content h2 {
    font-size: 23px;
  }
  .article-content h3 {
    font-size: 20px;
  }
  .article-pager {
    flex-direction: column;
  }
  .pager-link,
  .pager-link.pager-next {
    text-align: left;
    flex-direction: row;
  }
  .section-head h2 {
    font-size: 26px;
  }
  .cta-panel {
    padding: 44px 24px;
  }
  .cta-panel h2 {
    font-size: 26px;
  }
  .cta-actions .btn {
    width: 100%;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}
@media (max-width: 520px) {
  .container {
    padding: 0 16px;
  }
  .brand-text {
    font-size: 15px;
  }
  .brand-icon {
    width: 34px;
    height: 34px;
    font-size: 16px;
  }
  .article-hero h1 {
    font-size: 24px;
  }
  .article-main {
    padding: 22px 18px;
  }
  .related-card .related-img {
    height: 150px;
  }
  .cta-section {
    padding: 56px 0;
  }
  .cta-panel {
    padding: 36px 18px;
  }
}

/* roulang page: category3 */
:root {
  --bg-primary: #070D1A;
  --bg-secondary: #0A1428;
  --bg-card: rgba(255,255,255,0.05);
  --border-glass: rgba(255,255,255,0.12);
  --accent: #3FE0FF;
  --accent2: #00E5CC;
  --amber: #FFC55A;
  --text-white: #E6F6FF;
  --text-muted: #8FA7C3;
  --text-body: #C8D6E8;
  --radius-card: 20px;
  --radius-image: 12px;
  --shadow-default: 0 8px 24px rgba(0,0,0,0.30);
  --shadow-hover: 0 16px 40px rgba(63,224,255,0.16);
  --font-main: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-main);
  background: var(--bg-primary);
  color: var(--text-body);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; transition: color .2s ease; }
img { max-width: 100%; display: block; height: auto; }
ul { list-style: none; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
section { padding: 100px 0; }
.section-head { max-width: 720px; margin-bottom: 48px; }
.section-head h2 {
  font-size: 34px;
  color: var(--text-white);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
  line-height: 1.3;
}
.section-head p { color: var(--text-muted); font-size: 16px; }
@media (max-width: 768px) {
  section { padding: 72px 0; }
  .container { padding: 0 20px; }
  .section-head h2 { font-size: 28px; }
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 26px;
  border-radius: 12px;
  border: 1px solid transparent;
  font-size: 15px;
  font-weight: 600;
  line-height: 1;
  cursor: pointer;
  transition: all .25s ease;
  white-space: nowrap;
}
.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: #07101F;
}
.btn-primary:hover {
  box-shadow: 0 0 24px rgba(63,224,255,0.5);
  transform: translateY(-1px);
  color: #07101F;
}
.btn-outline {
  background: transparent;
  border-color: rgba(63,224,255,0.6);
  color: var(--accent);
}
.btn-outline:hover {
  border-color: var(--accent);
  background: rgba(63,224,255,0.08);
  color: var(--accent);
}
.btn-sm { padding: 10px 18px; font-size: 14px; border-radius: 10px; }
.btn-lg { padding: 16px 34px; font-size: 17px; border-radius: 14px; }
.btn-block { width: 100%; }

/* Header + Nav Panel */
.site-header { padding: 20px 0 0; position: relative; z-index: 50; }
.nav-panel {
  display: flex;
  align-items: center;
  gap: 12px;
  background: rgba(13, 22, 46, 0.85);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 20px;
  padding: 10px 16px;
  box-shadow: var(--shadow-default);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.brand-icon {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: #07101F;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  box-shadow: 0 0 16px rgba(63,224,255,0.4);
}
.brand-text {
  color: var(--text-white);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.01em;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-left: 12px;
  flex: 1;
}
.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 16px;
  border-radius: 12px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-muted);
  border: 1px solid transparent;
  transition: all .22s ease;
}
.nav-link i { font-size: 14px; }
.nav-link:hover { color: var(--text-white); background: rgba(255,255,255,0.06); }
.nav-link.active {
  background: rgba(63,224,255,0.12);
  border-color: rgba(63,224,255,0.45);
  color: var(--accent);
  box-shadow: 0 0 16px rgba(63,224,255,0.12);
}
.nav-cta { margin-left: auto; }
.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border: 1px solid rgba(255,255,255,0.18);
  border-radius: 10px;
  background: rgba(255,255,255,0.06);
  color: var(--text-white);
  font-size: 16px;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all .2s ease;
}
.nav-toggle:hover { background: rgba(255,255,255,0.12); border-color: var(--accent); }
@media (max-width: 1023px) {
  .nav-panel { flex-wrap: wrap; }
  .nav-toggle { display: inline-flex; margin-left: 4px; }
  .nav-cta { margin-left: auto; }
  .nav-links {
    display: none;
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    margin-left: 0;
    padding: 8px 0 4px;
    border-top: 1px solid rgba(255,255,255,0.07);
    margin-top: 8px;
  }
  .nav-links.open { display: flex; }
  .nav-link { justify-content: flex-start; padding: 12px 14px; }
  .nav-link + .nav-link { margin-top: 4px; }
}

/* Page Hero */
.page-hero {
  position: relative;
  padding: 88px 0 64px;
  background-image: linear-gradient(180deg, rgba(7,13,26,0.85) 0%, rgba(7,13,26,0.92) 100%), url('/assets/images/backpic/back-2.webp');
  background-size: cover;
  background-position: center;
  margin-top: 0;
}
.page-hero .container { position: relative; z-index: 2; }
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 20px;
}
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb i { font-size: 11px; opacity: 0.6; }
.page-hero h1 {
  font-size: 46px;
  line-height: 1.22;
  color: var(--text-white);
  font-weight: 800;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
  max-width: 760px;
}
.page-hero h1 span { color: var(--accent); }
.page-hero .hero-desc {
  font-size: 18px;
  color: var(--text-body);
  max-width: 620px;
  line-height: 1.75;
}
@media (max-width: 768px) {
  .page-hero { padding: 64px 0 48px; }
  .page-hero h1 { font-size: 30px; }
  .page-hero .hero-desc { font-size: 16px; }
}

/* Cooperation Modes */
.coop-modes { background: var(--bg-primary); }
.mode-card {
  height: 100%;
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-card);
  overflow: hidden;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  transition: transform .3s ease, box-shadow .3s ease;
  display: flex;
  flex-direction: column;
}
.mode-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.mode-card .card-body { padding: 28px; flex: 1; display: flex; flex-direction: column; }

/* Image card */
.mode-image-wrap { position: relative; }
.mode-image-wrap img { width: 100%; height: 200px; object-fit: cover; }
.mode-tag {
  position: absolute;
  top: 14px;
  left: 14px;
  background: linear-gradient(135deg, rgba(63,224,255,0.9), rgba(0,229,204,0.9));
  color: #07101F;
  padding: 5px 12px;
  border-radius: 8px;
  font-size: 12px;
  font-weight: 700;
}
.mode-image-body h3 { color: var(--text-white); font-size: 20px; margin-bottom: 12px; }
.mode-image-body p { color: var(--text-muted); font-size: 14px; line-height: 1.75; }
.text-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--accent);
  font-size: 14px;
  font-weight: 600;
  margin-top: auto;
  padding-top: 16px;
}
.text-link:hover { color: #fff; }
.text-link i { font-size: 12px; transition: transform .2s; }
.text-link:hover i { transform: translateX(3px); }

/* Data card */
.mode-card-data {
  background: linear-gradient(160deg, rgba(10,20,40,0.95), rgba(13,28,54,0.9));
}
.data-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 18px;
  color: var(--amber);
  font-size: 13px;
  font-weight: 600;
  background: rgba(255,197,90,0.1);
  border: 1px solid rgba(255,197,90,0.25);
  padding: 6px 12px;
  border-radius: 10px;
  align-self: flex-start;
}
.mode-card-data h3 {
  color: var(--text-white);
  font-size: 21px;
  margin-bottom: 18px;
  line-height: 1.4;
}
.data-list { flex: 1; }
.data-list li {
  padding: 10px 0;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  font-size: 14px;
  color: var(--text-body);
  display: flex;
  align-items: flex-start;
  gap: 10px;
}
.data-list li:last-child { border-bottom: 0; }
.data-list strong {
  font-size: 26px;
  font-weight: 800;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
  line-height: 1;
  min-width: 34px;
  text-shadow: 0 0 16px rgba(63,224,255,0.45);
}
.data-note {
  margin-top: 16px;
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* Form card */
.mode-card-form { background: rgba(12, 22, 46, 0.9); }
.form-head {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
}
.form-head i {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: rgba(63,224,255,0.12);
  border: 1px solid rgba(63,224,255,0.3);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
}
.form-head h3 { color: var(--text-white); font-size: 19px; }
.coop-form { flex: 1; display: flex; flex-direction: column; }
.coop-form label {
  font-size: 12px;
  color: var(--text-muted);
  font-weight: 600;
  margin-bottom: 4px;
  letter-spacing: 0.03em;
}
.coop-form input,
.coop-form select,
.coop-form textarea {
  width: 100%;
  background: rgba(255,255,255,0.06);
  border: 0;
  border-bottom: 1px solid rgba(255,255,255,0.22);
  border-radius: 0;
  color: var(--text-white);
  font-size: 14px;
  padding: 11px 2px;
  margin-bottom: 16px;
  font-family: var(--font-main);
  appearance: none;
  -webkit-appearance: none;
  transition: border-color .2s, box-shadow .2s, background .2s;
}
.coop-form select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath fill='%233FE0FF' d='M5 6 0 0h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 4px center;
}
.coop-form input:focus,
.coop-form select:focus,
.coop-form textarea:focus {
  outline: none;
  border-bottom-color: var(--accent);
  background: rgba(255,255,255,0.09);
  box-shadow: 0 8px 24px rgba(63,224,255,0.1);
}
.coop-form input::placeholder,
.coop-form textarea::placeholder { color: var(--text-muted); }
.coop-form .btn { margin-top: auto; }

/* Cooperation Value Strip */
.coop-value {
  background: var(--bg-secondary);
  border-top: 1px solid rgba(255,255,255,0.05);
  border-bottom: 1px solid rgba(255,255,255,0.05);
}
.value-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.value-item {
  text-align: center;
  padding: 28px 20px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 18px;
  transition: all .25s ease;
}
.value-item:hover {
  border-color: rgba(63,224,255,0.4);
  background: rgba(63,224,255,0.06);
  transform: translateY(-3px);
}
.value-item i {
  font-size: 28px;
  color: var(--accent);
  margin-bottom: 12px;
  background: rgba(63,224,255,0.1);
  width: 56px;
  height: 56px;
  border-radius: 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.value-item span {
  display: block;
  color: var(--text-white);
  font-size: 15px;
  font-weight: 600;
  margin-top: 8px;
}
@media (max-width: 900px) {
  .value-grid { grid-template-columns: repeat(2, 1fr); gap: 14px; }
}
@media (max-width: 520px) {
  .value-grid { grid-template-columns: 1fr 1fr; }
}

/* Cooperation Process */
.coop-process { background: var(--bg-primary); }
.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.process-step {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-card);
  padding: 32px 24px 28px;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  transition: all .28s ease;
  overflow: hidden;
}
.process-step::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  opacity: 0.6;
}
.process-step:hover { transform: translateY(-5px); box-shadow: var(--shadow-hover); }
.step-num {
  font-size: 13px;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: 0.06em;
  background: rgba(63,224,255,0.1);
  padding: 4px 10px;
  border-radius: 6px;
  display: inline-block;
  margin-bottom: 14px;
}
.process-step h3 { color: var(--text-white); font-size: 19px; margin-bottom: 10px; }
.process-step p { font-size: 14px; color: var(--text-muted); line-height: 1.7; }
@media (max-width: 900px) {
  .process-steps { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 520px) {
  .process-steps { grid-template-columns: 1fr; }
}

/* FAQ */
.faq-section {
  background: var(--bg-secondary);
  border-top: 1px solid rgba(255,255,255,0.05);
  border-bottom: 1px solid rgba(255,255,255,0.05);
}
.faq-accordion { margin-bottom: 0; }
.faq-accordion .accordion-item {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: 16px;
  margin-bottom: 12px;
  overflow: hidden;
  transition: border-color .25s;
}
.faq-accordion .accordion-item:hover { border-color: rgba(63,224,255,0.3); }
.faq-accordion .accordion-title {
  background: transparent;
  color: var(--text-white);
  font-size: 15px;
  font-weight: 600;
  padding: 16px 24px;
  line-height: 1.5;
  display: flex;
  align-items: center;
  border: 0;
  position: relative;
}
.faq-accordion .accordion-title::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  margin-right: 14px;
  flex-shrink: 0;
  box-shadow: 0 0 8px rgba(63,224,255,0.6);
}
.faq-accordion .accordion-title::after {
  content: '\f078';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  font-size: 12px;
  color: var(--accent);
  position: absolute;
  right: 22px;
  transition: transform .3s;
}
.faq-accordion .accordion-item.is-active > .accordion-title::after { transform: rotate(180deg); }
.faq-accordion .accordion-title:hover,
.faq-accordion .accordion-title:focus {
  background: rgba(255,255,255,0.04);
  color: #fff;
}
.faq-accordion .accordion-content {
  background: transparent;
  color: var(--text-body);
  padding: 0 24px 20px 44px;
  border: 0;
  font-size: 14px;
  line-height: 1.8;
}
.faq-accordion .accordion-content p { color: var(--text-body); }

/* CTA */
.cta-section { background: var(--bg-primary); }
.cta-panel {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: 28px;
  padding: 64px 48px;
  text-align: center;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: var(--shadow-default);
  position: relative;
  overflow: hidden;
}
.cta-panel::before {
  content: '';
  position: absolute;
  top: -60px;
  right: -40px;
  width: 220px;
  height: 220px;
  background: radial-gradient(circle, rgba(63,224,255,0.2), transparent 70%);
  pointer-events: none;
}
.cta-panel h2 { color: var(--text-white); font-size: 32px; margin-bottom: 14px; font-weight: 700; }
.cta-panel p { color: var(--text-muted); font-size: 16px; max-width: 560px; margin: 0 auto 32px; line-height: 1.75; }
.cta-btns { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
@media (max-width: 768px) {
  .cta-panel { padding: 42px 24px; border-radius: 20px; }
  .cta-panel h2 { font-size: 26px; }
}

/* Footer */
.site-footer {
  background: var(--bg-secondary);
  border-top: 1px solid rgba(255,255,255,0.06);
  padding: 64px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 48px;
}
.footer-brand .brand { margin-bottom: 14px; }
.footer-brand p { font-size: 14px; color: var(--text-muted); line-height: 1.75; max-width: 320px; }
.footer-col h4 {
  color: var(--text-white);
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 16px;
}
.footer-col a {
  display: block;
  color: var(--text-muted);
  font-size: 14px;
  padding: 5px 0;
  transition: color .2s, padding-left .2s;
}
.footer-col a:hover { color: var(--accent); padding-left: 4px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding: 22px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  font-size: 13px;
  color: var(--text-muted);
}
.footer-bottom .domain { color: var(--text-muted); letter-spacing: 0.02em; }
@media (max-width: 900px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 520px) {
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
}

/* roulang page: category2 */
:root {
  --bg-primary: #070D1A;
  --bg-secondary: #0A1428;
  --bg-card: rgba(255, 255, 255, 0.05);
  --border-card: rgba(255, 255, 255, 0.12);
  --accent-1: #3FE0FF;
  --accent-2: #00E5CC;
  --text-primary: #E6F6FF;
  --text-secondary: #8FA7C3;
  --text-body: #C8D6E8;
  --accent-amber: #FFC55A;
  --radius-card: 20px;
  --radius-sm: 12px;
  --shadow-default: 0 8px 24px rgba(0, 0, 0, 0.30);
  --shadow-hover: 0 16px 40px rgba(63, 224, 255, 0.16);
  --transition: all 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', sans-serif;
  background: var(--bg-primary);
  color: var(--text-body);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--accent-1);
  text-decoration: none;
  transition: var(--transition);
}

a:hover {
  color: var(--accent-2);
}

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

:focus-visible {
  outline: 2px solid var(--accent-1);
  outline-offset: 2px;
}

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

/* 导航 */
.site-header {
  padding: 20px 0;
  position: relative;
  z-index: 50;
}

.nav-panel {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  background: rgba(10, 20, 40, 0.78);
  border: 1px solid var(--border-card);
  border-radius: 20px;
  padding: 8px 10px 8px 16px;
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  box-shadow: var(--shadow-default);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  white-space: nowrap;
}

.brand-icon {
  width: 40px;
  height: 40px;
  border-radius: 13px;
  background: linear-gradient(135deg, var(--accent-1), var(--accent-2));
  color: #07121F;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  box-shadow: 0 0 18px rgba(63, 224, 255, 0.35);
}

.brand-text {
  font-weight: 800;
  font-size: 17px;
  color: var(--text-primary);
  letter-spacing: 0.01em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1;
  justify-content: center;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 14px;
  border-radius: 12px;
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
  border: 1px solid transparent;
  transition: var(--transition);
}

.nav-link i {
  font-size: 14px;
  opacity: 0.85;
}

.nav-link:hover {
  background: rgba(63, 224, 255, 0.06);
  color: var(--text-primary);
  border-color: rgba(63, 224, 255, 0.18);
}

.nav-link.active {
  background: linear-gradient(135deg, rgba(63, 224, 255, 0.16), rgba(0, 229, 204, 0.08));
  color: var(--text-primary);
  border-color: rgba(63, 224, 255, 0.35);
  box-shadow: inset 0 0 14px rgba(63, 224, 255, 0.08);
}

.nav-cta {
  flex-shrink: 0;
}

.nav-toggle {
  display: none;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-card);
  color: var(--text-primary);
  border-radius: 12px;
  width: 44px;
  height: 44px;
  font-size: 18px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.nav-toggle:hover {
  background: rgba(255, 255, 255, 0.12);
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 12px;
  padding: 12px 24px;
  font-size: 15px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  line-height: 1.4;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-1), var(--accent-2));
  color: #07121F;
  box-shadow: 0 0 20px rgba(63, 224, 255, 0.25);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #6EEAFF, #1EF0DB);
  box-shadow: 0 0 28px rgba(63, 224, 255, 0.45);
  color: #07121F;
  transform: translateY(-1px);
}

.btn-outline {
  background: transparent;
  border: 1.5px solid rgba(63, 224, 255, 0.55);
  color: var(--accent-1);
}

.btn-outline:hover {
  background: rgba(63, 224, 255, 0.08);
  border-color: var(--accent-1);
  color: var(--text-primary);
  transform: translateY(-1px);
}

.btn-sm {
  padding: 8px 16px;
  font-size: 13px;
  border-radius: 10px;
}

.btn-lg {
  padding: 15px 34px;
  font-size: 16px;
  border-radius: 14px;
}

/* Hero */
.page-hero {
  position: relative;
  padding: 88px 0 72px;
  overflow: hidden;
  background-image: url('/assets/images/backpic/back-2.webp');
  background-size: cover;
  background-position: center;
}

.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(7, 13, 26, 0.92), rgba(7, 13, 26, 0.70) 60%, rgba(7, 13, 26, 0.95));
  z-index: 1;
}

.page-hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 120px;
  background: linear-gradient(0deg, rgba(7, 13, 26, 0.9), transparent);
  z-index: 1;
}

.page-hero .container {
  position: relative;
  z-index: 2;
}

.page-hero-card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 28px;
  padding: 48px 52px;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  max-width: 820px;
  box-shadow: var(--shadow-default);
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 18px;
  letter-spacing: 0.03em;
}

.breadcrumb a {
  color: var(--accent-1);
}

.breadcrumb a:hover {
  color: var(--accent-2);
}

.breadcrumb .sep {
  opacity: 0.5;
  font-size: 12px;
}

.page-hero h1 {
  font-size: 42px;
  color: var(--text-primary);
  line-height: 1.22;
  margin-bottom: 16px;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.page-hero .lead {
  font-size: 17px;
  color: var(--text-body);
  max-width: 620px;
  line-height: 1.8;
}

.hero-meta {
  margin-top: 24px;
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

/* 通用section */
.section {
  padding: 80px 0;
}

.section-header {
  max-width: 720px;
  margin-bottom: 44px;
}

.section-header.center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--accent-1);
  text-transform: none;
  margin-bottom: 12px;
  padding: 5px 14px;
  border-radius: 999px;
  background: rgba(63, 224, 255, 0.08);
  border: 1px solid rgba(63, 224, 255, 0.25);
}

.section-title {
  font-size: 30px;
  color: var(--text-primary);
  font-weight: 800;
  margin-bottom: 12px;
  line-height: 1.3;
}

.section-sub {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.75;
}

/* 阶段标签条 */
.stage-pills-section {
  padding: 72px 0 24px;
}

.stage-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: center;
}

.stage-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-secondary);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-card);
  transition: var(--transition);
  white-space: nowrap;
}

.stage-pill i {
  font-size: 13px;
  color: var(--accent-1);
}

.stage-pill:hover {
  color: var(--text-primary);
  border-color: rgba(63, 224, 255, 0.45);
  background: rgba(63, 224, 255, 0.07);
}

.stage-pill.active {
  color: #07121F;
  background: linear-gradient(135deg, var(--accent-1), var(--accent-2));
  border-color: transparent;
  box-shadow: 0 0 22px rgba(63, 224, 255, 0.3);
}

.stage-pill.active i {
  color: #07121F;
}

/* 左右交替图文 */
.alternate-section {
  padding: 56px 0 40px;
}

.alternate-row {
  align-items: center;
  margin-bottom: 56px;
}

.alternate-row.reverse {
  flex-direction: row-reverse;
}

.phase-media {
  position: relative;
}

.phase-media img {
  border-radius: 20px;
  box-shadow: var(--shadow-default);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.phase-media::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 20px;
  background: linear-gradient(135deg, rgba(63, 224, 255, 0.08), transparent 60%);
  pointer-events: none;
}

.phase-content {
  padding: 0 10px;
}

.phase-num {
  font-size: 44px;
  font-weight: 800;
  color: transparent;
  -webkit-text-stroke: 1px rgba(63, 224, 255, 0.55);
  line-height: 1;
  margin-bottom: 14px;
  font-variant-numeric: tabular-nums;
}

.phase-content h3 {
  font-size: 24px;
  color: var(--text-primary);
  font-weight: 700;
  margin-bottom: 12px;
  line-height: 1.4;
}

.phase-content p {
  font-size: 15px;
  color: var(--text-body);
  line-height: 1.8;
  margin-bottom: 16px;
}

.phase-list {
  list-style: none;
  margin: 0 0 20px;
  padding: 0;
}

.phase-list li {
  position: relative;
  padding-left: 24px;
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.phase-list li::before {
  content: '\f0a9';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  position: absolute;
  left: 0;
  top: 1px;
  color: var(--accent-1);
  font-size: 13px;
}

.phase-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
}

.phase-link i {
  font-size: 12px;
  transition: transform 0.3s ease;
}

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

/* 数据条 */
.stats-section {
  padding: 70px 0;
  background: linear-gradient(180deg, rgba(10, 20, 40, 0.55), rgba(7, 13, 26, 0.85));
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.stat-card {
  text-align: center;
  padding: 34px 20px;
}

.stat-num {
  font-size: 42px;
  font-weight: 800;
  color: var(--accent-1);
  text-shadow: 0 0 26px rgba(63, 224, 255, 0.5);
  font-variant-numeric: tabular-nums;
  line-height: 1.15;
  letter-spacing: 0.02em;
}

.stat-label {
  color: var(--text-secondary);
  font-size: 14px;
  margin-top: 8px;
  line-height: 1.5;
}

/* 教练团队 */
.coach-section {
  padding: 80px 0;
}

.coach-grid {
  margin-top: 10px;
}

.coach-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-card);
  padding: 34px 28px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  height: 100%;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.coach-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-1), transparent);
  opacity: 0.4;
}

.coach-card:nth-child(2)::before {
  background: linear-gradient(90deg, var(--accent-2), transparent);
  opacity: 0.5;
}

.coach-card:nth-child(3)::before {
  background: linear-gradient(90deg, var(--accent-amber), transparent);
  opacity: 0.35;
}

.coach-card:hover {
  transform: translateY(-4px);
  border-color: rgba(63, 224, 255, 0.3);
  box-shadow: var(--shadow-hover);
}

.coach-icon {
  width: 52px;
  height: 52px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  margin-bottom: 20px;
  background: linear-gradient(135deg, rgba(63, 224, 255, 0.18), rgba(0, 229, 204, 0.08));
  border: 1px solid rgba(63, 224, 255, 0.3);
  color: var(--accent-1);
}

.coach-card:nth-child(2) .coach-icon {
  background: linear-gradient(135deg, rgba(0, 229, 204, 0.18), rgba(63, 224, 255, 0.08));
  border-color: rgba(0, 229, 204, 0.3);
  color: var(--accent-2);
}

.coach-card:nth-child(3) .coach-icon {
  background: linear-gradient(135deg, rgba(255, 197, 90, 0.15), rgba(255, 197, 90, 0.04));
  border-color: rgba(255, 197, 90, 0.3);
  color: var(--accent-amber);
}

.coach-card h3 {
  font-size: 20px;
  color: var(--text-primary);
  margin-bottom: 10px;
  line-height: 1.4;
}

.coach-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 16px;
}

.coach-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.coach-tags span {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 12px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-body);
}

/* FAQ */
.faq-section {
  padding: 80px 0;
  background: linear-gradient(180deg, rgba(7, 13, 26, 0.4), rgba(10, 20, 40, 0.5));
}

.faq-list {
  max-width: 820px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.faq-item:first-child {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.faq-item details {
  width: 100%;
}

.faq-item summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 22px 8px;
  cursor: pointer;
  font-size: 16px;
  color: var(--text-primary);
  font-weight: 600;
  list-style: none;
  transition: var(--transition);
  position: relative;
  padding-left: 28px;
}

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

.faq-item summary::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-1);
  box-shadow: 0 0 10px rgba(63, 224, 255, 0.6);
}

.faq-item summary::after {
  content: '\f107';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  font-size: 16px;
  color: var(--text-secondary);
  transition: transform 0.3s ease;
}

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

.faq-item summary:hover {
  color: var(--accent-1);
}

.faq-answer {
  padding: 0 20px 24px 28px;
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.75;
}

/* CTA */
.cta-section {
  padding: 80px 0;
}

.cta-wrap {
  background: rgba(10, 20, 40, 0.6);
  border: 1px solid var(--border-card);
  border-radius: 28px;
  padding: 52px 48px;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: var(--shadow-default);
  position: relative;
  overflow: hidden;
}

.cta-wrap::before {
  content: '';
  position: absolute;
  top: -60px;
  right: -60px;
  width: 220px;
  height: 220px;
  background: radial-gradient(circle, rgba(63, 224, 255, 0.12), transparent 70%);
  pointer-events: none;
}

.cta-heading {
  font-size: 28px;
  color: var(--text-primary);
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 14px;
}

.cta-desc {
  color: var(--text-secondary);
  font-size: 15px;
  max-width: 540px;
  line-height: 1.7;
  margin-bottom: 28px;
}

.cta-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.contact-layout {
  margin-top: 40px;
  padding-top: 36px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 40px;
  align-items: start;
}

.contact-form {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-card);
  border-radius: 22px;
  padding: 30px;
}

.contact-form h3 {
  color: var(--text-primary);
  font-size: 18px;
  margin-bottom: 20px;
}

.form-group {
  margin-bottom: 18px;
}

.form-group label {
  display: block;
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 6px;
  font-weight: 500;
}

.form-group input,
.form-group textarea {
  width: 100%;
  background: rgba(255, 255, 255, 0.06);
  border: none;
  border-bottom: 2px solid rgba(255, 255, 255, 0.15);
  border-radius: 8px 8px 0 0;
  padding: 12px 14px;
  font-size: 15px;
  color: var(--text-primary);
  transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-bottom-color: var(--accent-1);
  background: rgba(63, 224, 255, 0.05);
  box-shadow: 0 6px 16px rgba(63, 224, 255, 0.08);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: #6C7F9A;
}

.form-success {
  display: none;
  margin-top: 14px;
  padding: 12px 16px;
  border-radius: 12px;
  background: rgba(0, 229, 204, 0.1);
  border: 1px solid rgba(0, 229, 204, 0.35);
  color: var(--accent-2);
  font-size: 14px;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.contact-info-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 18px 20px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 18px;
  transition: var(--transition);
}

.contact-info-item:hover {
  border-color: rgba(63, 224, 255, 0.25);
  background: rgba(63, 224, 255, 0.04);
}

.contact-info-icon {
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(63, 224, 255, 0.18), rgba(0, 229, 204, 0.08));
  border: 1px solid rgba(63, 224, 255, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-1);
  font-size: 16px;
}

.contact-info-item h4 {
  font-size: 14px;
  color: var(--text-primary);
  margin-bottom: 3px;
}

.contact-info-item p,
.contact-info-item a {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.5;
}

.contact-info-item a:hover {
  color: var(--accent-1);
}

/* 页脚 */
.site-footer {
  background: #050A14;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding: 64px 0 28px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2.2fr 1fr 1fr 1.3fr;
  gap: 48px;
  margin-bottom: 40px;
}

.footer-brand .brand-text {
  font-size: 18px;
}

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

.footer-col h4 {
  font-size: 14px;
  color: var(--text-primary);
  margin-bottom: 16px;
  letter-spacing: 0.06em;
  font-weight: 700;
}

.footer-col a {
  display: block;
  color: var(--text-secondary);
  font-size: 14px;
  padding: 6px 0;
  transition: var(--transition);
}

.footer-col a:hover {
  color: var(--accent-1);
  padding-left: 4px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: 22px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: var(--text-secondary);
  gap: 12px;
}

.footer-bottom .domain {
  opacity: 0.7;
}

/* 响应式 */
@media (max-width: 1024px) {
  .nav-panel {
    flex-wrap: wrap;
  }

  .nav-links {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    right: 0;
    flex-direction: column;
    background: rgba(8, 16, 32, 0.97);
    border: 1px solid var(--border-card);
    border-radius: 16px;
    padding: 14px;
    gap: 8px;
    opacity: 0;
    transform: translateY(-8px);
    pointer-events: none;
    transition: var(--transition);
    box-shadow: var(--shadow-default);
  }

  .nav-panel.open .nav-links {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .nav-cta {
    margin-left: auto;
  }

  .stage-pills {
    justify-content: flex-start;
  }

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

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

@media (max-width: 640px) {
  body {
    font-size: 15px;
  }

  .container {
    padding: 0 20px;
  }

  .site-header {
    padding: 14px 0;
  }

  .nav-panel {
    padding: 6px 8px 6px 12px;
    border-radius: 16px;
  }

  .brand-text {
    font-size: 15px;
  }

  .brand-icon {
    width: 36px;
    height: 36px;
    font-size: 16px;
    border-radius: 11px;
  }

  .nav-cta {
    padding: 7px 12px;
    font-size: 12px;
  }

  .page-hero {
    padding: 60px 0 50px;
  }

  .page-hero-card {
    padding: 32px 24px;
    border-radius: 20px;
  }

  .page-hero h1 {
    font-size: 30px;
  }

  .page-hero .lead {
    font-size: 15px;
  }

  .section {
    padding: 56px 0;
  }

  .stage-pills-section {
    padding: 48px 0 12px;
  }

  .alternate-section {
    padding: 36px 0 24px;
  }

  .section-title {
    font-size: 24px;
  }

  .alternate-row {
    margin-bottom: 44px;
  }

  .phase-num {
    font-size: 34px;
  }

  .phase-content h3 {
    font-size: 20px;
  }

  .stats-section {
    padding: 50px 0;
  }

  .stat-card {
    padding: 22px 12px;
  }

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

  .coach-section {
    padding: 56px 0;
  }

  .coach-card {
    padding: 26px 20px;
  }

  .faq-section {
    padding: 56px 0;
  }

  .faq-item summary {
    font-size: 15px;
    padding: 18px 6px 18px 26px;
  }

  .cta-section {
    padding: 56px 0;
  }

  .cta-wrap {
    padding: 36px 22px;
    border-radius: 20px;
  }

  .cta-heading {
    font-size: 23px;
  }

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

  .cta-actions .btn {
    width: 100%;
  }

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

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

  .contact-form {
    padding: 22px 20px;
  }

  .contact-grid {
    gap: 28px;
  }
}