/* roulang page: index */
:root {
    --color-primary: #1e3f64;
    --color-primary-dark: #162e4a;
    --color-primary-light: #3569a0;
    --color-accent: #f59e0b;
    --color-accent-light: #fbbf24;
    --color-bg: #f8fafc;
    --color-text: #1e293b;
    --color-text-muted: #64748b;
    --color-border: #e2e8f0;
    --radius-sm: 6px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --shadow-card: 0 1px 3px rgba(0,0,0,0.08), 0 4px 16px rgba(0,0,0,0.04);
    --shadow-hover: 0 4px 12px rgba(0,0,0,0.10), 0 12px 32px rgba(0,0,0,0.08);
    --transition: all 0.25s ease;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
    font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
    background:var(--color-bg);
    color:var(--color-text);
    line-height:1.6;
    -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;cursor:pointer;border:none;background:none;}
input{font-family:inherit;}
.container{max-width:1200px;margin:0 auto;padding:0 24px;}

.site-header{
    position:sticky;top:0;z-index:50;
    background:rgba(255,255,255,0.92);
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px);
    border-bottom:1px solid rgba(226,232,240,0.7);
    transition:box-shadow 0.3s ease;
}
.site-header.scrolled{box-shadow:0 4px 24px rgba(0,0,0,0.08);}
.site-header .inner{
    display:flex;align-items:center;justify-content:space-between;
    height:72px;gap:24px;
}
.logo{
    display:flex;align-items:center;gap:10px;
    font-size:22px;font-weight:800;color:var(--color-primary);
    letter-spacing:-0.5px;white-space:nowrap;
    transition:opacity 0.2s;
}
.logo:hover{opacity:0.85;}
.logo-icon{
    width:38px;height:38px;border-radius:11px;
    background:linear-gradient(135deg,#1e3f64,#3569a0);
    display:flex;align-items:center;justify-content:center;
    color:#fff;font-size:17px;font-weight:700;
    box-shadow:0 2px 10px rgba(30,63,100,0.3);
    flex-shrink:0;
}
.main-nav{display:flex;align-items:center;gap:2px;margin-left:auto;}
.main-nav a{
    padding:8px 18px;border-radius:8px;
    font-size:15px;font-weight:500;color:#475569;
    transition:all 0.2s ease;position:relative;white-space:nowrap;
}
.main-nav a:hover{color:var(--color-primary);background:#f1f5f9;}
.main-nav a.active{color:var(--color-primary);font-weight:600;}
.main-nav a.active::after{
    content:'';position:absolute;bottom:2px;left:50%;
    transform:translateX(-50%);width:20px;height:3px;
    border-radius:3px;background:var(--color-accent);
}
.nav-cta{
    display:inline-flex;align-items:center;gap:6px;
    padding:10px 24px;border-radius:50px;
    background:linear-gradient(135deg,#f59e0b,#fbbf24);
    color:#1a1a1a;font-size:14px;font-weight:700;
    box-shadow:0 2px 14px rgba(245,158,11,0.35);
    transition:all 0.25s ease;white-space:nowrap;
}
.nav-cta:hover{transform:translateY(-2px);box-shadow:0 6px 22px rgba(245,158,11,0.45);}
.nav-cta:active{transform:translateY(0);}
.nav-toggle{
    display:none;flex-direction:column;gap:5px;
    padding:8px;border-radius:8px;background:transparent;
    transition:background 0.2s;
}
.nav-toggle:hover{background:#f1f5f9;}
.nav-toggle span{
    display:block;width:22px;height:2px;border-radius:2px;
    background:#334155;transition:all 0.3s ease;
}
.nav-toggle.open span:nth-child(1){transform:rotate(45deg) translate(5px,5px);}
.nav-toggle.open span:nth-child(2){opacity:0;}
.nav-toggle.open span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px);}

.hero{
    position:relative;overflow:hidden;
    background:linear-gradient(135deg,#0f2036 0%,#1e3f64 55%,#285586 100%);
    padding:112px 0 120px;isolation:isolate;
}
.hero::before{
    content:'';position:absolute;inset:0;
    background-image:url('/assets/images/backpic/back-1.png');
    background-size:cover;background-position:center;
    opacity:0.18;z-index:-1;
}
.hero::after{
    content:'';position:absolute;inset:0;
    background:radial-gradient(ellipse at top right,rgba(245,158,11,0.10) 0%,transparent 60%);
    z-index:-1;
}
.hero-badge{
    display:inline-flex;align-items:center;gap:8px;
    background:rgba(255,255,255,0.12);
    border:1px solid rgba(255,255,255,0.2);
    color:#fff;padding:7px 18px;border-radius:50px;
    font-size:13px;font-weight:500;letter-spacing:0.5px;
    backdrop-filter:blur(4px);margin-bottom:26px;
}
.hero-badge .dot{
    width:8px;height:8px;border-radius:50%;background:#34d399;
    animation:pulse-dot 1.5s infinite;
}
@keyframes pulse-dot{
    0%,100%{opacity:1;box-shadow:0 0 0 0 rgba(52,211,153,0.5);}
    50%{opacity:0.8;box-shadow:0 0 0 6px rgba(52,211,153,0);}
}
.hero h1{
    font-size:clamp(2.2rem,4.5vw,3.6rem);
    font-weight:800;color:#fff;line-height:1.15;
    letter-spacing:-1px;margin-bottom:20px;
}
.hero h1 .highlight{
    background:linear-gradient(90deg,#fbbf24,#f59e0b);
    -webkit-background-clip:text;-webkit-text-fill-color:transparent;
    background-clip:text;
}
.hero-desc{
    font-size:clamp(1rem,1.4vw,1.15rem);
    color:rgba(255,255,255,0.85);line-height:1.85;
    max-width:620px;margin-bottom:38px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:16px;}
.btn-hero{
    display:inline-flex;align-items:center;gap:8px;
    padding:14px 34px;border-radius:50px;
    background:linear-gradient(135deg,#f59e0b,#fbbf24);
    color:#1a1a1a;font-size:16px;font-weight:700;
    box-shadow:0 4px 20px rgba(245,158,11,0.4);
    transition:all 0.3s ease;
}
.btn-hero:hover{transform:translateY(-3px);box-shadow:0 8px 32px rgba(245,158,11,0.5);}
.btn-hero:active{transform:translateY(-1px);}
.btn-ghost{
    display:inline-flex;align-items:center;gap:8px;
    padding:14px 30px;border-radius:50px;
    border:1px solid rgba(255,255,255,0.35);
    color:#fff;font-size:16px;font-weight:500;
    background:rgba(255,255,255,0.08);
    backdrop-filter:blur(4px);transition:all 0.3s ease;
}
.btn-ghost:hover{background:rgba(255,255,255,0.15);border-color:rgba(255,255,255,0.6);}

.stats-strip{background:#fff;border-bottom:1px solid var(--color-border);box-shadow:0 4px 20px rgba(0,0,0,0.03);}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.stat-item{text-align:center;padding:34px 16px;position:relative;}
.stat-item:not(:last-child)::after{
    content:'';position:absolute;right:0;top:50%;transform:translateY(-50%);
    width:1px;height:48px;background:var(--color-border);
}
.stat-number{font-size:34px;font-weight:800;color:var(--color-primary);line-height:1.2;}
.stat-number .unit{font-size:19px;font-weight:600;color:var(--color-accent);margin-left:2px;}
.stat-label{font-size:14px;color:var(--color-text-muted);margin-top:6px;}

.section{padding:88px 0;}
.section-alt{background:#fff;border-top:1px solid var(--color-border);border-bottom:1px solid var(--color-border);}
.section-head{text-align:center;max-width:720px;margin:0 auto 52px;}
.section-head .tag{
    display:inline-block;padding:5px 16px;border-radius:50px;
    background:rgba(30,63,100,0.07);color:var(--color-primary);
    font-size:13px;font-weight:600;letter-spacing:1px;margin-bottom:14px;
}
.section-head h2{
    font-size:clamp(1.6rem,3vw,2.4rem);font-weight:800;
    color:#1e293b;line-height:1.3;letter-spacing:-0.5px;
}
.section-head p{font-size:16px;color:var(--color-text-muted);line-height:1.75;margin-top:12px;}

.card{
    background:#fff;border-radius:var(--radius-md);
    border:1px solid var(--color-border);box-shadow:var(--shadow-card);
    transition:var(--transition);overflow:hidden;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.card-body{padding:28px;}

.category-card{
    position:relative;border-radius:var(--radius-lg);overflow:hidden;
    border:1px solid var(--color-border);box-shadow:var(--shadow-card);
    transition:var(--transition);height:100%;min-height:280px;
    display:flex;flex-direction:column;background:#fff;
}
.category-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover);}
.category-card .thumb{height:150px;overflow:hidden;position:relative;}
.category-card .thumb img{
    width:100%;height:100%;object-fit:cover;transition:transform 0.45s ease;
}
.category-card:hover .thumb img{transform:scale(1.07);}
.category-card .thumb::after{
    content:'';position:absolute;inset:0;
    background:linear-gradient(to top,rgba(15,32,54,0.28),transparent);
}
.category-card .body{padding:26px 26px 24px;flex:1;display:flex;flex-direction:column;}
.category-card .body h3{font-size:19px;font-weight:700;color:#1e293b;margin-bottom:8px;}
.category-card .body p{font-size:14px;color:var(--color-text-muted);line-height:1.65;flex:1;}
.category-link-arrow{
    margin-top:16px;display:inline-flex;align-items:center;gap:6px;
    color:var(--color-primary);font-size:14px;font-weight:600;
    transition:gap 0.2s ease,color 0.2s ease;
}
.category-card:hover .category-link-arrow{gap:12px;color:var(--color-accent);}
.category-num{
    position:absolute;top:16px;left:16px;z-index:2;
    background:rgba(255,255,255,0.92);
    backdrop-filter:blur(4px);color:var(--color-primary);
    font-size:12px;font-weight:700;padding:4px 14px;border-radius:50px;
    box-shadow:0 2px 8px rgba(0,0,0,0.08);
}

.content-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;}
.content-card{
    background:#fff;border-radius:var(--radius-md);overflow:hidden;
    border:1px solid var(--color-border);box-shadow:var(--shadow-card);
    transition:var(--transition);display:flex;flex-direction:column;
}
.content-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.content-card .thumb{
    height:180px;overflow:hidden;position:relative;background:#f1f5f9;
}
.content-card .thumb img{
    width:100%;height:100%;object-fit:cover;transition:transform 0.45s ease;
}
.content-card:hover .thumb img{transform:scale(1.05);}
.content-card .badge{
    position:absolute;top:12px;left:12px;
    background:rgba(255,255,255,0.92);padding:4px 12px;border-radius:4px;
    font-size:12px;font-weight:600;color:var(--color-primary);
    box-shadow:0 2px 6px rgba(0,0,0,0.08);
}
.content-card .meta{padding:22px 22px 26px;flex:1;display:flex;flex-direction:column;}
.content-card .meta h3{
    font-size:16px;font-weight:700;line-height:1.45;color:#1e293b;
    margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;
    -webkit-box-orient:vertical;overflow:hidden;
}
.content-card .meta p{
    font-size:13px;color:var(--color-text-muted);line-height:1.65;
    display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;
    overflow:hidden;flex:1;
}
.card-footer-info{
    display:flex;align-items:center;justify-content:space-between;
    margin-top:16px;padding-top:14px;border-top:1px solid #f1f5f9;
    font-size:12px;color:#94a3b8;
}

.latest-section{background:var(--color-bg);}
.latest-layout{display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:start;}
.latest-list{
    background:#fff;border-radius:var(--radius-md);
    border:1px solid var(--color-border);box-shadow:var(--shadow-card);
    overflow:hidden;
}
.latest-item{
    display:block;padding:22px 26px;border-bottom:1px solid #f1f5f9;
    transition:all 0.22s ease;position:relative;
}
.latest-item:last-child{border-bottom:none;}
.latest-item:hover{background:#f8fafc;padding-left:32px;}
.latest-item .latest-tag{
    display:inline-block;font-size:12px;font-weight:600;
    color:var(--color-primary);background:rgba(30,63,100,0.08);
    padding:3px 12px;border-radius:4px;margin-bottom:8px;
}
.latest-item h3{
    font-size:15px;font-weight:600;color:#1e293b;
    line-height:1.45;margin-bottom:4px;
    display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;
}
.latest-item p{
    font-size:13px;color:var(--color-text-muted);line-height:1.55;
    display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.latest-item .latest-date{font-size:12px;color:#94a3b8;margin-top:8px;}
.empty-tip{
    padding:48px 24px;text-align:center;color:#94a3b8;font-size:15px;
}

.side-card{
    background:#fff;border-radius:var(--radius-md);
    border:1px solid var(--color-border);box-shadow:var(--shadow-card);
    overflow:hidden;
}
.side-card .side-thumb{height:160px;overflow:hidden;}
.side-card .side-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 0.4s ease;}
.side-card:hover .side-thumb img{transform:scale(1.04);}
.side-card .side-body{padding:22px 24px;}
.side-card .side-body h4{font-size:16px;font-weight:700;color:#1e293b;margin-bottom:6px;}
.side-card .side-body p{font-size:13px;color:var(--color-text-muted);line-height:1.6;}

.process-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.process-step{
    background:#fff;border-radius:var(--radius-md);
    border:1px solid var(--color-border);box-shadow:var(--shadow-card);
    padding:34px 24px;text-align:center;transition:var(--transition);
}
.process-step:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.process-step .step-num{
    width:50px;height:50px;border-radius:50%;
    background:linear-gradient(135deg,var(--color-primary),var(--color-primary-light));
    color:#fff;font-size:19px;font-weight:700;
    display:flex;align-items:center;justify-content:center;
    margin:0 auto 18px;box-shadow:0 4px 14px rgba(30,63,100,0.25);
}
.process-step h3{font-size:17px;font-weight:700;color:#1e293b;margin-bottom:8px;}
.process-step p{font-size:14px;color:var(--color-text-muted);line-height:1.6;}

.faq-list{max-width:820px;margin:0 auto;}
.faq-item{
    background:#fff;border:1px solid var(--color-border);
    border-radius:var(--radius-sm);margin-bottom:14px;
    overflow:hidden;transition:all 0.3s ease;
}
.faq-item.open{border-color:rgba(30,63,100,0.3);box-shadow:var(--shadow-card);}
.faq-question{
    display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:22px 26px;font-size:15px;font-weight:600;
    color:#1e293b;cursor:pointer;transition:color 0.2s ease;
}
.faq-question:hover{color:var(--color-primary);}
.faq-icon{
    width:28px;height:28px;border-radius:50%;
    background:#f1f5f9;display:flex;align-items:center;justify-content:center;
    font-size:15px;color:var(--color-primary);flex-shrink:0;
    transition:all 0.3s ease;
}
.faq-item.open .faq-icon{transform:rotate(45deg);background:var(--color-primary);color:#fff;}
.faq-answer{max-height:0;overflow:hidden;transition:max-height 0.35s ease;}
.faq-answer-inner{padding:0 26px 22px;font-size:14px;color:var(--color-text-muted);line-height:1.75;}

.cta-section{
    background:linear-gradient(135deg,#0f2036 0%,#1e3f64 60%,#285586 100%);
    position:relative;overflow:hidden;padding:88px 0;isolation:isolate;
}
.cta-section::before{
    content:'';position:absolute;inset:0;
    background-image:url('/assets/images/backpic/back-2.png');
    background-size:cover;background-position:center;
    opacity:0.15;z-index:-1;
}
.cta-inner{text-align:center;max-width:720px;margin:0 auto;color:#fff;}
.cta-inner h2{
    font-size:clamp(1.6rem,3vw,2.4rem);font-weight:800;
    line-height:1.3;margin-bottom:16px;letter-spacing:-0.5px;
}
.cta-inner p{font-size:16px;color:rgba(255,255,255,0.85);margin-bottom:34px;line-height:1.75;}
.cta-inner .btn-hero{font-size:17px;padding:16px 40px;}

.site-footer{background:#0f2036;color:rgba(255,255,255,0.7);padding:64px 0 0;font-size:14px;}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:48px;padding-bottom:44px;}
.footer-logo{
    font-size:22px;font-weight:800;color:#fff;
    display:flex;align-items:center;gap:10px;margin-bottom:18px;
}
.footer-logo .logo-icon{
    width:36px;height:36px;border-radius:10px;
    background:linear-gradient(135deg,#f59e0b,#fbbf24);
    display:flex;align-items:center;justify-content:center;
    color:#1a1a1a;font-size:16px;font-weight:700;
}
.footer-col h4{color:#fff;font-size:16px;font-weight:600;margin-bottom:18px;}
.footer-col ul{list-style:none;}
.footer-col ul li{margin-bottom:12px;}
.footer-col ul li a{
    color:rgba(255,255,255,0.7);transition:color 0.2s;
    display:inline-flex;align-items:center;gap:8px;
}
.footer-col ul li a::before{
    content:'›';color:rgba(255,255,255,0.35);transition:color 0.2s;
}
.footer-col ul li a:hover{color:#fbbf24;}
.footer-col ul li a:hover::before{color:#fbbf24;}
.footer-bottom{
    border-top:1px solid rgba(255,255,255,0.1);
    padding:22px 0;font-size:13px;color:rgba(255,255,255,0.5);
}
.footer-bottom-inner{
    display:flex;align-items:center;justify-content:space-between;
    gap:16px;flex-wrap:wrap;
}

@media (max-width:1024px){
    .content-grid{grid-template-columns:repeat(2,1fr);}
    .process-grid{grid-template-columns:repeat(2,1fr);}
    .latest-layout{grid-template-columns:1fr;}
    .stats-grid{grid-template-columns:repeat(2,1fr);}
    .stat-item:nth-child(2)::after{display:none;}
}
@media (max-width:768px){
    .nav-toggle{display:flex;}
    .main-nav{
        position:fixed;top:72px;left:0;right:0;
        background:#fff;flex-direction:column;
        padding:16px 24px;gap:6px;
        border-bottom:1px solid var(--color-border);
        box-shadow:0 8px 24px rgba(0,0,0,0.08);
        transform:translateY(-130%);opacity:0;
        transition:all 0.3s ease;pointer-events:none;
        align-items:stretch;
    }
    .main-nav.open{transform:translateY(0);opacity:1;pointer-events:auto;}
    .main-nav a{width:100%;padding:12px 16px;text-align:left;}
    .nav-cta{display:none;}
    .hero{padding:76px 0 84px;}
    .section{padding:60px 0;}
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
    .section-head h2{font-size:24px;}
}
@media (max-width:520px){
    .container{padding:0 16px;}
    .site-header .inner{height:62px;}
    .logo{font-size:18px;}
    .logo-icon{width:32px;height:32px;font-size:14px;border-radius:9px;}
    .main-nav{top:62px;}
    .hero h1{font-size:27px;}
    .hero-desc{font-size:15px;}
    .hero-actions{flex-direction:column;gap:12px;}
    .btn-hero,.btn-ghost{width:100%;justify-content:center;}
    .stats-grid{grid-template-columns:1fr 1fr;}
    .stat-item{padding:24px 8px;}
    .stat-number{font-size:24px;}
    .stat-label{font-size:12px;}
    .content-grid{grid-template-columns:1fr;}
    .process-grid{grid-template-columns:1fr;}
    .footer-grid{grid-template-columns:1fr;gap:24px;}
    .footer-bottom-inner{flex-direction:column;text-align:center;}
    .section{padding:48px 0;}
    .section-head .tag{font-size:12px;}
}
a:focus-visible,button:focus-visible{
    outline:2px solid var(--color-primary);
    outline-offset:2px;border-radius:4px;
}

/* roulang page: category1 */
:root {
    --primary: #1d4ed8;
    --primary-dark: #1e3a8a;
    --accent: #f59e0b;
    --bg: #f8fafc;
    --surface: #ffffff;
    --text: #0f172a;
    --muted: #64748b;
    --border: #e2e8f0;
    --radius: 18px;
    --shadow: 0 4px 24px rgba(15, 23, 42, .08);
  }

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

  html { scroll-behavior: smooth; }

  body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
  }

  a { text-decoration: none; color: inherit; }
  img { max-width: 100%; display: block; }
  ul, ol { list-style: none; }

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

  /* ===== Header / Nav ===== */
  .site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, .92);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--border);
  }

  .site-header .inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 74px;
    gap: 28px;
  }

  .logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 800;
    font-size: 20px;
    color: var(--text);
    white-space: nowrap;
    letter-spacing: -0.01em;
  }

  .logo-icon {
    width: 38px;
    height: 38px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #fff;
    border-radius: 11px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 900;
    font-size: 18px;
    box-shadow: 0 4px 12px rgba(29, 78, 216, .28);
  }

  .main-nav {
    display: flex;
    align-items: center;
    gap: 34px;
  }

  .main-nav a {
    font-size: 15px;
    font-weight: 600;
    color: var(--muted);
    padding: 8px 2px;
    border-bottom: 2px solid transparent;
    transition: color .25s, border-color .25s;
    line-height: 1.4;
  }

  .main-nav a:hover { color: var(--text); }
  .main-nav a.active { color: var(--primary); border-bottom-color: var(--primary); }

  .nav-cta {
    background: var(--accent);
    color: #fff;
    font-weight: 700;
    font-size: 15px;
    padding: 10px 24px;
    border-radius: 999px;
    white-space: nowrap;
    box-shadow: 0 4px 16px rgba(245, 158, 11, .35);
    transition: all .25s;
  }

  .nav-cta:hover {
    background: #d97706;
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(245, 158, 11, .45);
  }

  .nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    border-radius: 8px;
  }

  .nav-toggle span {
    width: 22px;
    height: 2px;
    background: var(--text);
    border-radius: 2px;
    transition: transform .3s, opacity .3s;
  }

  /* ===== Hero ===== */
  .hero {
    position: relative;
    min-height: 560px;
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    color: #fff;
  }

  .hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(115deg, rgba(15, 23, 42, .82) 10%, rgba(30, 64, 175, .56) 90%);
  }

  .hero-content {
    position: relative;
    z-index: 2;
    max-width: 780px;
    padding: 90px 0;
  }

  .hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, .14);
    border: 1px solid rgba(255, 255, 255, .25);
    backdrop-filter: blur(6px);
    color: #fff;
    font-size: 13px;
    font-weight: 600;
    padding: 6px 16px;
    border-radius: 999px;
    letter-spacing: .06em;
  }

  .hero h1 {
    font-size: 44px;
    font-weight: 800;
    line-height: 1.2;
    margin: 20px 0 16px;
    letter-spacing: -0.02em;
  }

  .hero p {
    font-size: 17px;
    color: rgba(255, 255, 255, .86);
    max-width: 620px;
    margin-bottom: 30px;
  }

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

  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-weight: 600;
    border-radius: 999px;
    padding: 14px 30px;
    border: none;
    cursor: pointer;
    transition: all .25s;
    font-size: 15px;
    line-height: 1.4;
  }

  .btn-primary {
    background: var(--accent);
    color: #fff;
    box-shadow: 0 8px 24px rgba(245, 158, 11, .35);
  }

  .btn-primary:hover {
    background: #d97706;
    transform: translateY(-2px);
    box-shadow: 0 10px 28px rgba(245, 158, 11, .45);
  }

  .btn-ghost {
    background: rgba(255, 255, 255, .14);
    color: #fff;
    border: 1px solid rgba(255, 255, 255, .38);
    backdrop-filter: blur(6px);
  }

  .btn-ghost:hover { background: rgba(255, 255, 255, .24); transform: translateY(-2px); }

  .btn-white {
    background: #fff;
    color: var(--primary);
    box-shadow: 0 8px 24px rgba(0, 0, 0, .12);
  }

  .btn-white:hover { background: #f1f5f9; transform: translateY(-2px); }

  .btn-lg { padding: 16px 38px; font-size: 16px; }

  .hero-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-top: 42px;
  }

  .hero-stats div {
    background: rgba(255, 255, 255, .12);
    border: 1px solid rgba(255, 255, 255, .18);
    border-radius: 16px;
    padding: 14px 22px;
    text-align: center;
    backdrop-filter: blur(8px);
    min-width: 120px;
  }

  .hero-stats strong {
    display: block;
    font-size: 22px;
    font-weight: 800;
    color: #fff;
    line-height: 1.3;
  }

  .hero-stats span {
    font-size: 13px;
    color: rgba(255, 255, 255, .72);
  }

  /* ===== Sections ===== */
  .section { padding: 88px 0; }
  .section-alt { background: #fff; }
  .section-sm { padding: 48px 0; }

  .section-head {
    max-width: 680px;
    margin-bottom: 48px;
  }

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

  .eyebrow {
    display: inline-block;
    color: var(--primary);
    font-weight: 700;
    font-size: 14px;
    letter-spacing: .08em;
    margin-bottom: 8px;
  }

  .section-head h2 {
    font-size: 32px;
    font-weight: 800;
    line-height: 1.3;
    margin-bottom: 12px;
    letter-spacing: -0.015em;
  }

  .section-head p {
    color: var(--muted);
    font-size: 16px;
  }

  /* ===== Steps ===== */
  .steps-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
  }

  .step-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 34px 30px;
    position: relative;
    transition: all .3s;
  }

  .step-card:hover {
    box-shadow: var(--shadow);
    transform: translateY(-4px);
    border-color: #c7d2fe;
  }

  .step-num {
    font-size: 46px;
    font-weight: 900;
    color: rgba(29, 78, 216, .14);
    line-height: 1;
    font-variant-numeric: tabular-nums;
  }

  .step-card h3 {
    font-size: 20px;
    font-weight: 700;
    margin: 18px 0 10px;
  }

  .step-card p {
    color: var(--muted);
    font-size: 15px;
    line-height: 1.7;
  }

  /* ===== Category Cards ===== */
  .cat-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
  }

  .cat-card {
    background: #fff;
    border-radius: 22px;
    overflow: hidden;
    border: 1px solid var(--border);
    box-shadow: 0 2px 12px rgba(15, 23, 42, .04);
    transition: all .3s;
    display: block;
  }

  .cat-card:hover {
    box-shadow: 0 16px 40px rgba(15, 23, 42, .12);
    transform: translateY(-6px);
    border-color: #c7d2fe;
  }

  .cat-card img {
    width: 100%;
    height: 210px;
    object-fit: cover;
    transition: transform .4s ease;
  }

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

  .cat-card-body { padding: 26px; }

  .cat-tag {
    display: inline-block;
    background: #eff6ff;
    color: var(--primary);
    font-size: 13px;
    font-weight: 600;
    padding: 4px 14px;
    border-radius: 999px;
    margin-bottom: 14px;
  }

  .cat-card h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 8px;
  }

  .cat-card p {
    color: var(--muted);
    font-size: 14px;
    line-height: 1.6;
  }

  /* ===== News / Article ===== */
  .news-layout {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 32px;
    align-items: start;
  }

  .news-feature {
    background: #fff;
    border-radius: 22px;
    overflow: hidden;
    border: 1px solid var(--border);
    box-shadow: 0 2px 12px rgba(15, 23, 42, .04);
    transition: all .3s;
  }

  .news-feature:hover { box-shadow: var(--shadow); transform: translateY(-4px); }

  .news-feature img {
    width: 100%;
    height: 300px;
    object-fit: cover;
  }

  .news-feature-body { padding: 30px; }

  .news-feature-body h3 {
    font-size: 24px;
    font-weight: 800;
    line-height: 1.4;
    margin-bottom: 12px;
  }

  .news-feature-body p {
    color: var(--muted);
    font-size: 15px;
    line-height: 1.7;
  }

  .link-more {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--primary);
    font-weight: 600;
    font-size: 14px;
    margin-top: 18px;
    transition: gap .25s;
  }

  .link-more:hover { gap: 10px; }

  .news-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
  }

  .news-item {
    display: flex;
    gap: 18px;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 18px;
    padding: 18px;
    transition: all .3s;
    align-items: flex-start;
  }

  .news-item:hover {
    box-shadow: var(--shadow);
    transform: translateY(-3px);
    border-color: #c7d2fe;
  }

  .news-item img {
    width: 124px;
    height: 86px;
    object-fit: cover;
    border-radius: 12px;
    flex-shrink: 0;
  }

  .news-item h4 {
    font-size: 15px;
    font-weight: 700;
    line-height: 1.5;
    color: var(--text);
  }

  .news-item p {
    font-size: 13px;
    color: var(--muted);
    margin-top: 6px;
    line-height: 1.5;
  }

  /* ===== Safety Bar ===== */
  .safety-bar {
    background: #fffbeb;
    border: 1px solid #fde68a;
    border-radius: 20px;
    padding: 28px 34px;
    display: flex;
    gap: 18px;
    align-items: flex-start;
    box-shadow: 0 4px 20px rgba(245, 158, 11, .08);
  }

  .safety-icon {
    font-size: 26px;
    line-height: 1;
    flex-shrink: 0;
    margin-top: 2px;
  }

  .safety-bar h3 {
    font-size: 17px;
    font-weight: 700;
    color: #92400e;
    margin-bottom: 6px;
  }

  .safety-bar p {
    font-size: 14px;
    color: #78716c;
    line-height: 1.7;
    max-width: 780px;
  }

  /* ===== FAQ ===== */
  .faq-list { max-width: 820px; margin: 0 auto; }

  .faq-item {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 16px;
    margin-bottom: 14px;
    overflow: hidden;
    transition: all .25s;
  }

  .faq-item:hover { border-color: #c7d2fe; box-shadow: 0 4px 16px rgba(15, 23, 42, .05); }

  .faq-question {
    padding: 22px 26px;
    font-weight: 600;
    font-size: 16px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    gap: 20px;
    line-height: 1.5;
  }

  .faq-icon {
    position: relative;
    width: 18px;
    height: 18px;
    flex-shrink: 0;
  }

  .faq-icon::before,
  .faq-icon::after {
    content: '';
    position: absolute;
    background: var(--primary);
    border-radius: 2px;
    transition: all .3s;
  }

  .faq-icon::before {
    width: 18px;
    height: 2px;
    top: 8px;
    left: 0;
  }

  .faq-icon::after {
    width: 2px;
    height: 18px;
    top: 0;
    left: 8px;
  }

  .faq-item.open .faq-icon::after { transform: rotate(90deg); opacity: 0; }

  .faq-answer {
    padding: 0 26px 24px;
    color: var(--muted);
    font-size: 15px;
    line-height: 1.75;
    display: none;
  }

  .faq-item.open .faq-answer { display: block; }

  /* ===== CTA ===== */
  .cta-card {
    background: linear-gradient(120deg, #1e3a8a, #1d4ed8);
    border-radius: 32px;
    padding: 68px 56px;
    color: #fff;
    text-align: center;
    position: relative;
    overflow: hidden;
    box-shadow: 0 24px 60px rgba(30, 64, 175, .35);
  }

  .cta-card::before {
    content: '';
    position: absolute;
    top: -60px;
    right: -60px;
    width: 220px;
    height: 220px;
    background: rgba(255, 255, 255, .08);
    border-radius: 50%;
  }

  .cta-card::after {
    content: '';
    position: absolute;
    bottom: -80px;
    left: 10%;
    width: 180px;
    height: 180px;
    background: rgba(255, 255, 255, .06);
    border-radius: 50%;
  }

  .cta-card h2 {
    font-size: 32px;
    font-weight: 800;
    line-height: 1.3;
    margin-bottom: 14px;
    position: relative;
    z-index: 1;
  }

  .cta-card p {
    font-size: 16px;
    color: rgba(255, 255, 255, .85);
    max-width: 560px;
    margin: 0 auto 34px;
    position: relative;
    z-index: 1;
  }

  .cta-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    justify-content: center;
    position: relative;
    z-index: 1;
  }

  /* ===== Footer ===== */
  .site-footer {
    background: #0f172a;
    color: #94a3b8;
  }

  .footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr;
    gap: 48px;
    padding: 68px 0 44px;
  }

  .footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 20px;
    font-weight: 800;
    color: #fff;
    margin-bottom: 18px;
  }

  .footer-logo .logo-icon {
    background: linear-gradient(135deg, var(--accent), #d97706);
    box-shadow: 0 4px 14px rgba(245, 158, 11, .35);
  }

  .site-footer p { font-size: 14px; line-height: 1.7; color: rgba(255, 255, 255, .55); }

  .footer-col h4 {
    color: #fff;
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 20px;
  }

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

  .footer-col a {
    color: #94a3b8;
    font-size: 14px;
    transition: color .2s;
  }

  .footer-col a:hover { color: #fff; }

  .footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, .08);
    padding: 22px 0;
  }

  .footer-bottom-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    font-size: 13px;
    color: #64748b;
    flex-wrap: wrap;
  }

  /* ===== Focus visibility ===== */
  a:focus-visible,
  button:focus-visible {
    outline: 3px solid rgba(29, 78, 216, .35);
    outline-offset: 2px;
    border-radius: 6px;
  }

  /* ===== Responsive ===== */
  @media (max-width: 1024px) {
    .hero h1 { font-size: 38px; }

    .steps-grid { gap: 20px; }
    .cat-grid { gap: 20px; }
    .news-layout { grid-template-columns: 1fr; }
    .news-feature img { height: 260px; }
  }

  @media (max-width: 768px) {
    .site-header .inner { height: 64px; }

    .nav-toggle { display: flex; }

    .main-nav {
      display: none;
      position: absolute;
      top: 64px;
      left: 0;
      right: 0;
      background: #fff;
      border-bottom: 1px solid var(--border);
      box-shadow: 0 16px 40px rgba(15, 23, 42, .1);
      flex-direction: column;
      align-items: stretch;
      gap: 0;
      padding: 12px 24px 20px;
    }

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

    .main-nav a {
      padding: 14px 8px;
      border-bottom: 1px solid var(--border);
      font-size: 16px;
    }

    .main-nav a:last-child { border-bottom: none; }
    .main-nav a.active { border-bottom: 1px solid var(--border); color: var(--primary); background: #f0f6ff; border-radius: 8px; }

    .nav-cta { display: none; }

    .hero { min-height: 500px; }
    .hero-content { padding: 70px 0; }
    .hero h1 { font-size: 30px; }
    .hero p { font-size: 15px; }

    .section { padding: 64px 0; }
    .section-head h2 { font-size: 26px; }

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

    .news-item { flex-direction: column; }
    .news-item img { width: 100%; height: 180px; }

    .cta-card { padding: 48px 28px; border-radius: 24px; }
    .cta-card h2 { font-size: 24px; }

    .footer-grid { grid-template-columns: 1fr; gap: 36px; padding: 52px 0 32px; }

    .safety-bar { flex-direction: column; padding: 24px; }
  }

  @media (max-width: 520px) {
    .container { padding: 0 18px; }

    .hero h1 { font-size: 26px; }
    .hero p { font-size: 14px; }
    .hero-stats { gap: 10px; }
    .hero-stats div { min-width: 96px; padding: 12px 14px; }
    .hero-stats strong { font-size: 18px; }

    .btn { padding: 13px 22px; font-size: 14px; }

    .section-head h2 { font-size: 23px; }

    .step-card { padding: 26px 22px; }
    .cat-card img { height: 170px; }
    .cat-card-body { padding: 20px; }

    .news-feature-body { padding: 22px; }
    .news-feature-body h3 { font-size: 20px; }

    .faq-question { font-size: 15px; padding: 18px 20px; }
    .faq-answer { padding: 0 20px 20px; font-size: 14px; }

    .cta-card { padding: 40px 22px; }
    .cta-card h2 { font-size: 21px; }

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

/* roulang page: article */
:root {
        --primary: #0f172a;
        --primary-light: #1e293b;
        --accent: #d4a853;
        --accent-hover: #e6bc6a;
        --bg-page: #f8fafc;
        --text-main: #1e293b;
        --text-muted: #64748b;
        --border-color: #e2e8f0;
        --radius-lg: 20px;
        --radius-md: 14px;
        --radius-sm: 8px;
        --shadow-card: 0 4px 20px rgba(15, 23, 42, .06);
        --shadow-hover: 0 14px 36px rgba(15, 23, 42, .12);
        --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
    }
    * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
    }
    html {
        scroll-behavior: smooth;
    }
    body {
        font-family: var(--font-sans);
        background: var(--bg-page);
        color: var(--text-main);
        line-height: 1.75;
        -webkit-font-smoothing: antialiased;
    }
    a {
        color: inherit;
        text-decoration: none;
        transition: color .25s ease;
    }
    img {
        max-width: 100%;
        display: block;
    }
    button {
        font-family: inherit;
        border: none;
        background: none;
        cursor: pointer;
    }
    .container {
        max-width: 1200px;
        margin: 0 auto;
        padding: 0 24px;
    }
    .container-narrow {
        max-width: 860px;
        margin: 0 auto;
        padding: 0 24px;
    }

    /* ===== Header ===== */
    .site-header {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        z-index: 100;
        background: rgba(15, 23, 42, .92);
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
        border-bottom: 1px solid rgba(255, 255, 255, .08);
        transition: background .3s ease, box-shadow .3s ease;
    }
    .site-header.scrolled {
        box-shadow: 0 8px 30px rgba(0, 0, 0, .15);
    }
    .site-header .inner {
        display: flex;
        align-items: center;
        justify-content: space-between;
        height: 72px;
        gap: 24px;
    }
    .logo {
        display: flex;
        align-items: center;
        gap: 10px;
        font-size: 1.15rem;
        font-weight: 700;
        color: #fff;
        letter-spacing: .5px;
        white-space: nowrap;
    }
    .logo-icon {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 36px;
        height: 36px;
        border-radius: 10px;
        background: linear-gradient(135deg, var(--accent), #f59e0b);
        color: #0f172a;
        font-weight: 800;
        font-size: 1.05rem;
        box-shadow: 0 4px 12px rgba(212, 168, 83, .35);
    }
    .main-nav {
        display: flex;
        align-items: center;
        gap: 8px;
    }
    .main-nav a {
        position: relative;
        padding: 8px 16px;
        border-radius: 999px;
        font-size: .95rem;
        color: rgba(255, 255, 255, .75);
        transition: color .25s, background .25s;
    }
    .main-nav a:hover {
        color: #fff;
        background: rgba(255, 255, 255, .08);
    }
    .main-nav a.active {
        color: #0f172a;
        background: var(--accent);
        font-weight: 600;
    }
    .nav-cta {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        padding: 9px 22px;
        border-radius: 999px;
        background: linear-gradient(135deg, var(--accent), #f59e0b);
        color: #0f172a !important;
        font-weight: 600;
        font-size: .92rem;
        box-shadow: 0 4px 14px rgba(212, 168, 83, .3);
        transition: transform .25s, box-shadow .25s;
    }
    .nav-cta:hover {
        transform: translateY(-2px);
        box-shadow: 0 8px 20px rgba(212, 168, 83, .4);
    }
    .nav-toggle {
        display: none;
        flex-direction: column;
        gap: 5px;
        padding: 6px;
        border-radius: 8px;
    }
    .nav-toggle span {
        width: 24px;
        height: 2px;
        background: #fff;
        border-radius: 2px;
        transition: transform .3s, opacity .3s;
    }

    /* ===== Article Hero ===== */
    .article-hero {
        position: relative;
        padding: 150px 0 90px;
        background-size: cover;
        background-position: center;
        color: #fff;
    }
    .article-hero .overlay {
        position: absolute;
        inset: 0;
        background: linear-gradient(135deg, rgba(15, 23, 42, .92), rgba(15, 23, 42, .75) 50%, rgba(15, 23, 42, .55));
    }
    .article-hero .container {
        position: relative;
        z-index: 2;
        max-width: 860px;
    }
    .breadcrumb {
        display: flex;
        align-items: center;
        gap: 8px;
        font-size: .88rem;
        color: rgba(255, 255, 255, .65);
        margin-bottom: 18px;
    }
    .breadcrumb a {
        color: rgba(255, 255, 255, .8);
    }
    .breadcrumb a:hover {
        color: var(--accent);
    }
    .hero-pill {
        display: inline-block;
        padding: 5px 16px;
        border-radius: 999px;
        background: rgba(212, 168, 83, .18);
        border: 1px solid rgba(212, 168, 83, .4);
        color: var(--accent);
        font-size: .85rem;
        font-weight: 500;
        margin-bottom: 16px;
        letter-spacing: .5px;
    }
    .article-hero h1 {
        font-size: clamp(2rem, 4vw, 2.9rem);
        font-weight: 800;
        line-height: 1.25;
        margin-bottom: 16px;
        letter-spacing: .5px;
    }
    .hero-desc {
        font-size: 1.08rem;
        color: rgba(255, 255, 255, .8);
        line-height: 1.7;
        max-width: 680px;
        margin-bottom: 20px;
    }
    .hero-meta {
        display: flex;
        flex-wrap: wrap;
        gap: 20px;
        font-size: .9rem;
        color: rgba(255, 255, 255, .65);
    }
    .hero-meta span {
        display: inline-flex;
        align-items: center;
        gap: 6px;
    }

    /* ===== Article Body ===== */
    .article-main {
        padding: 70px 0 60px;
    }
    .article-card {
        background: #fff;
        border-radius: var(--radius-lg);
        box-shadow: var(--shadow-card);
        padding: 48px 56px;
        border: 1px solid var(--border-color);
    }
    .article-content {
        font-size: 1.05rem;
        line-height: 1.9;
        color: #334155;
    }
    .article-content p {
        margin-bottom: 1.6em;
    }
    .article-content h2 {
        font-size: 1.5rem;
        font-weight: 700;
        color: var(--text-main);
        margin: 2em 0 1em;
        padding-left: 16px;
        border-left: 4px solid var(--accent);
    }
    .article-content h3 {
        font-size: 1.2rem;
        font-weight: 600;
        color: var(--text-main);
        margin: 1.8em 0 .8em;
    }
    .article-content img {
        border-radius: var(--radius-md);
        margin: 2em 0;
        box-shadow: var(--shadow-card);
    }
    .article-content ul,
    .article-content ol {
        margin-bottom: 1.6em;
        padding-left: 1.4em;
    }
    .article-content li {
        margin-bottom: .7em;
    }
    .article-content blockquote {
        border-left: 4px solid var(--accent);
        background: #fefce8;
        padding: 16px 24px;
        border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
        margin-bottom: 1.6em;
        color: #92400e;
        font-style: normal;
    }
    .article-footer {
        display: flex;
        flex-wrap: wrap;
        align-items: center;
        justify-content: space-between;
        gap: 16px;
        margin-top: 40px;
        padding-top: 28px;
        border-top: 1px solid var(--border-color);
    }
    .article-tags {
        display: flex;
        flex-wrap: wrap;
        gap: 8px;
    }
    .tag {
        display: inline-block;
        padding: 4px 14px;
        background: #f1f5f9;
        border-radius: 999px;
        font-size: .83rem;
        color: var(--text-muted);
        border: 1px solid var(--border-color);
    }
    .btn {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        padding: 10px 24px;
        border-radius: 999px;
        font-size: .95rem;
        font-weight: 500;
        transition: all .25s ease;
        outline: none;
    }
    .btn:focus-visible {
        box-shadow: 0 0 0 3px rgba(212, 168, 83, .4);
    }
    .btn-primary {
        background: linear-gradient(135deg, var(--accent), #f59e0b);
        color: #0f172a;
        font-weight: 600;
        box-shadow: 0 4px 14px rgba(212, 168, 83, .3);
    }
    .btn-primary:hover {
        transform: translateY(-2px);
        box-shadow: 0 8px 22px rgba(212, 168, 83, .4);
    }
    .btn-ghost {
        background: transparent;
        border: 1px solid var(--border-color);
        color: var(--text-muted);
    }
    .btn-ghost:hover {
        border-color: var(--accent);
        color: var(--accent);
        background: rgba(212, 168, 83, .06);
    }

    /* ===== Not Found ===== */
    .not-found-box {
        background: #fff;
        border-radius: var(--radius-lg);
        box-shadow: var(--shadow-card);
        border: 1px solid var(--border-color);
        padding: 80px 40px;
        text-align: center;
    }
    .not-found-icon {
        width: 72px;
        height: 72px;
        margin: 0 auto 24px;
        display: flex;
        align-items: center;
        justify-content: center;
        border-radius: 50%;
        background: #f1f5f9;
        font-size: 2rem;
        color: var(--text-muted);
    }
    .not-found-box h2 {
        font-size: 1.6rem;
        font-weight: 700;
        margin-bottom: 12px;
    }
    .not-found-box p {
        color: var(--text-muted);
        margin-bottom: 28px;
    }

    /* ===== Section ===== */
    .section {
        padding: 80px 0;
    }
    .section-light {
        background: #fff;
    }
    .section-dark {
        background: var(--primary);
        color: #fff;
    }
    .section-head {
        text-align: center;
        max-width: 680px;
        margin: 0 auto 52px;
    }
    .section-head.light h2 {
        color: #fff;
    }
    .section-head.light p {
        color: rgba(255, 255, 255, .65);
    }
    .section-head h2 {
        font-size: clamp(1.5rem, 3vw, 2.2rem);
        font-weight: 800;
        margin-bottom: 12px;
        letter-spacing: .3px;
    }
    .section-head p {
        color: var(--text-muted);
        font-size: 1rem;
    }
    .section-pill {
        display: inline-block;
        padding: 4px 16px;
        border-radius: 999px;
        background: rgba(212, 168, 83, .12);
        color: #b5862f;
        font-size: .82rem;
        font-weight: 600;
        letter-spacing: 1px;
        margin-bottom: 14px;
        text-transform: uppercase;
    }
    .section-dark .section-pill {
        background: rgba(212, 168, 83, .16);
        color: var(--accent);
    }

    /* ===== Cards ===== */
    .grid-3 {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 28px;
    }
    .tech-card {
        background: #fff;
        border-radius: var(--radius-lg);
        overflow: hidden;
        border: 1px solid var(--border-color);
        box-shadow: var(--shadow-card);
        transition: transform .3s, box-shadow .3s;
        display: block;
    }
    .tech-card:hover {
        transform: translateY(-6px);
        box-shadow: var(--shadow-hover);
    }
    .tech-card .img-wrap {
        position: relative;
        height: 200px;
        overflow: hidden;
    }
    .tech-card .img-wrap img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform .5s;
    }
    .tech-card:hover .img-wrap img {
        transform: scale(1.05);
    }
    .img-tag {
        position: absolute;
        top: 14px;
        left: 14px;
        padding: 4px 14px;
        border-radius: 999px;
        background: rgba(15, 23, 42, .8);
        color: #fff;
        font-size: .8rem;
        font-weight: 500;
        backdrop-filter: blur(4px);
    }
    .tech-card .card-body {
        padding: 24px;
    }
    .tech-card .card-body h3 {
        font-size: 1.12rem;
        font-weight: 700;
        margin-bottom: 8px;
        color: var(--text-main);
    }
    .tech-card .card-body p {
        font-size: .92rem;
        color: var(--text-muted);
        line-height: 1.65;
        margin-bottom: 14px;
    }
    .card-link {
        font-size: .9rem;
        font-weight: 600;
        color: #b5862f;
        display: inline-flex;
        align-items: center;
        gap: 4px;
    }

    /* ===== Benefits ===== */
    .benefit-card {
        background: rgba(255, 255, 255, .05);
        border: 1px solid rgba(255, 255, 255, .1);
        border-radius: var(--radius-lg);
        padding: 40px 32px;
        text-align: center;
        transition: background .3s, border-color .3s, transform .3s;
    }
    .benefit-card:hover {
        background: rgba(255, 255, 255, .09);
        border-color: rgba(212, 168, 83, .4);
        transform: translateY(-4px);
    }
    .icon-circle {
        width: 64px;
        height: 64px;
        margin: 0 auto 20px;
        display: flex;
        align-items: center;
        justify-content: center;
        border-radius: 50%;
        background: linear-gradient(135deg, rgba(212, 168, 83, .25), rgba(245, 158, 11, .15));
        border: 1px solid rgba(212, 168, 83, .3);
        font-size: 1.4rem;
        color: var(--accent);
    }
    .benefit-card h3 {
        font-size: 1.15rem;
        font-weight: 700;
        margin-bottom: 10px;
        color: #fff;
    }
    .benefit-card p {
        font-size: .93rem;
        color: rgba(255, 255, 255, .65);
        line-height: 1.7;
    }

    /* ===== FAQ ===== */
    .faq-list {
        max-width: 760px;
        margin: 0 auto;
        display: flex;
        flex-direction: column;
        gap: 14px;
    }
    .faq-item {
        background: #fff;
        border: 1px solid var(--border-color);
        border-radius: var(--radius-md);
        overflow: hidden;
        transition: box-shadow .3s, border-color .3s;
    }
    .faq-item.active {
        border-color: rgba(212, 168, 83, .4);
        box-shadow: var(--shadow-card);
    }
    .faq-q {
        width: 100%;
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 16px;
        padding: 20px 24px;
        font-size: 1rem;
        font-weight: 600;
        color: var(--text-main);
        text-align: left;
    }
    .faq-q i {
        color: var(--text-muted);
        transition: transform .3s;
        font-size: .9rem;
    }
    .faq-item.active .faq-q i {
        transform: rotate(180deg);
        color: var(--accent);
    }
    .faq-a {
        max-height: 0;
        overflow: hidden;
        transition: max-height .35s ease;
    }
    .faq-a-inner {
        padding: 0 24px 20px;
        color: var(--text-muted);
        font-size: .95rem;
        line-height: 1.75;
    }

    /* ===== CTA ===== */
    .cta-section {
        position: relative;
        padding: 90px 0;
        background-size: cover;
        background-position: center;
        color: #fff;
        text-align: center;
    }
    .cta-section .overlay {
        position: absolute;
        inset: 0;
        background: linear-gradient(135deg, rgba(15, 23, 42, .93), rgba(15, 23, 42, .82));
    }
    .cta-inner {
        position: relative;
        z-index: 2;
        max-width: 640px;
        margin: 0 auto;
        padding: 0 24px;
    }
    .cta-inner h2 {
        font-size: clamp(1.6rem, 3.5vw, 2.3rem);
        font-weight: 800;
        margin-bottom: 14px;
    }
    .cta-inner p {
        color: rgba(255, 255, 255, .7);
        font-size: 1.05rem;
        margin-bottom: 32px;
    }
    .cta-btns {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        gap: 14px;
    }
    .btn-outline-light {
        background: transparent;
        border: 1.5px solid rgba(255, 255, 255, .5);
        color: #fff;
    }
    .btn-outline-light:hover {
        border-color: #fff;
        background: rgba(255, 255, 255, .08);
    }

    /* ===== Footer ===== */
    .site-footer {
        background: #0b1120;
        color: rgba(255, 255, 255, .7);
        padding: 70px 0 0;
    }
    .footer-grid {
        display: grid;
        grid-template-columns: 1.4fr 1fr 1fr;
        gap: 48px;
        padding-bottom: 48px;
        border-bottom: 1px solid rgba(255, 255, 255, .08);
    }
    .footer-logo {
        display: flex;
        align-items: center;
        gap: 10px;
        font-size: 1.15rem;
        font-weight: 700;
        color: #fff;
        margin-bottom: 16px;
    }
    .footer-logo .logo-icon {
        width: 32px;
        height: 32px;
        font-size: .95rem;
    }
    .footer-col h4 {
        color: #fff;
        font-size: .98rem;
        font-weight: 600;
        margin-bottom: 18px;
    }
    .footer-col ul {
        list-style: none;
        display: flex;
        flex-direction: column;
        gap: 10px;
    }
    .footer-col a {
        color: rgba(255, 255, 255, .6);
        font-size: .92rem;
        transition: color .25s, padding-left .25s;
    }
    .footer-col a:hover {
        color: var(--accent);
        padding-left: 4px;
    }
    .footer-bottom {
        padding: 20px 0;
    }
    .footer-bottom-inner {
        display: flex;
        justify-content: space-between;
        flex-wrap: wrap;
        gap: 8px;
        font-size: .85rem;
        color: rgba(255, 255, 255, .4);
    }

    /* ===== Responsive ===== */
    @media (max-width: 1024px) {
        .grid-3 {
            grid-template-columns: repeat(2, 1fr);
        }
        .article-card {
            padding: 36px 32px;
        }
    }
    @media (max-width: 768px) {
        .main-nav {
            position: fixed;
            top: 72px;
            right: -100%;
            width: 280px;
            height: calc(100vh - 72px);
            background: var(--primary);
            flex-direction: column;
            align-items: stretch;
            padding: 24px;
            gap: 6px;
            border-left: 1px solid rgba(255, 255, 255, .08);
            transition: right .3s ease;
            z-index: 99;
        }
        .main-nav.open {
            right: 0;
        }
        .main-nav a {
            padding: 14px 18px;
            font-size: 1rem;
            border-radius: 12px;
            color: rgba(255, 255, 255, .85);
        }
        .nav-cta {
            display: none;
        }
        .nav-toggle {
            display: flex;
        }
        .article-hero {
            padding: 130px 0 60px;
        }
        .grid-3 {
            grid-template-columns: 1fr;
            gap: 20px;
        }
        .footer-grid {
            grid-template-columns: 1fr;
            gap: 36px;
        }
        .article-card {
            padding: 28px 20px;
        }
        .article-footer {
            flex-direction: column;
            align-items: flex-start;
        }
        .section {
            padding: 60px 0;
        }
    }
    @media (max-width: 520px) {
        .container {
            padding: 0 16px;
        }
        .hero-meta {
            gap: 12px;
            font-size: .85rem;
        }
        .article-hero h1 {
            font-size: 1.7rem;
        }
        .footer-bottom-inner {
            flex-direction: column;
            text-align: center;
            gap: 4px;
        }
    }

/* roulang page: category3 */
:root {
            --primary: #2563eb;
            --primary-dark: #1d4ed8;
            --primary-light: #3b82f6;
            --accent: #0ea5e9;
            --accent-soft: #e0f2fe;
            --bg-body: #f8fafc;
            --bg-card: #ffffff;
            --bg-deep: #0f172a;
            --text-main: #1e293b;
            --text-muted: #64748b;
            --border-color: #e2e8f0;
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-sm: 8px;
            --shadow-card: 0 4px 24px rgba(15, 23, 42, 0.06);
            --shadow-hover: 0 12px 32px rgba(37, 99, 235, 0.12);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background-color: var(--bg-body);
            color: var(--text-main);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }

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

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

        button {
            font-family: inherit;
        }

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

        /* ===== Header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(226, 232, 240, 0.6);
            box-shadow: 0 1px 12px rgba(15, 23, 42, 0.04);
        }

        .site-header .inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 1.25rem;
            letter-spacing: -0.01em;
            color: #0f172a;
            transition: var(--transition);
        }

        .logo:hover {
            opacity: 0.85;
        }

        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, #1d4ed8, #0ea5e9);
            border-radius: 10px;
            color: #fff;
            font-size: 1.1rem;
            font-weight: 900;
            box-shadow: 0 4px 12px rgba(29, 78, 216, 0.3);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .main-nav a {
            padding: 8px 18px;
            border-radius: 999px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-muted);
            transition: var(--transition);
            position: relative;
        }

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

        .main-nav a.active {
            color: var(--primary);
            background: #eff6ff;
            font-weight: 600;
        }

        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            border-radius: 3px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 9px 22px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff !important;
            border-radius: 999px;
            font-size: 0.9rem;
            font-weight: 600;
            box-shadow: 0 4px 14px rgba(37, 99, 235, 0.3);
            transition: var(--transition);
            border: none;
            cursor: pointer;
        }

        .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(37, 99, 235, 0.4);
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: transparent;
            border: none;
            padding: 8px;
            cursor: pointer;
            border-radius: 8px;
        }

        .nav-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background: #1e293b;
            border-radius: 2px;
            transition: var(--transition);
        }

        .nav-toggle:hover {
            background: #f1f5f9;
        }

        /* ===== Hero ===== */
        .page-head {
            position: relative;
            padding: 90px 0 70px;
            background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 55%, #0e7490 100%);
            overflow: hidden;
        }

        .page-head::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            opacity: 0.18;
            mix-blend-mode: luminosity;
        }

        .page-head::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            right: 0;
            height: 60px;
            background: var(--bg-body);
            border-radius: 60% 100% 0 0 / 12px 16px 0 0;
        }

        .page-head-content {
            position: relative;
            z-index: 2;
            text-align: center;
            color: #fff;
        }

        .page-head-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 16px;
            background: rgba(255, 255, 255, 0.14);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 999px;
            font-size: 0.85rem;
            color: #dbeafe;
            margin-bottom: 20px;
            backdrop-filter: blur(8px);
        }

        .page-head h1 {
            font-size: 2.6rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            line-height: 1.25;
            margin-bottom: 16px;
        }

        .page-head p {
            max-width: 680px;
            margin: 0 auto 28px;
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.78);
        }

        .head-actions {
            display: flex;
            justify-content: center;
            gap: 12px;
            flex-wrap: wrap;
        }

        .btn-white {
            padding: 10px 26px;
            background: #fff;
            color: #0f172a;
            border-radius: 999px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: var(--transition);
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
        }

        .btn-white:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.16);
        }

        .btn-ghost {
            padding: 10px 26px;
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.3);
            border-radius: 999px;
            font-weight: 500;
            font-size: 0.95rem;
            transition: var(--transition);
        }

        .btn-ghost:hover {
            background: rgba(255, 255, 255, 0.2);
        }

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

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--primary);
            background: #eff6ff;
            padding: 5px 14px;
            border-radius: 999px;
            margin-bottom: 14px;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 800;
            letter-spacing: -0.01em;
            line-height: 1.3;
            margin-bottom: 12px;
            color: #0f172a;
        }

        .section-desc {
            font-size: 1rem;
            color: var(--text-muted);
            max-width: 680px;
            line-height: 1.7;
        }

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

        /* ===== Cards ===== */
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .feature-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 32px;
            border: 1px solid rgba(226, 232, 240, 0.6);
            box-shadow: var(--shadow-card);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            opacity: 0;
            transition: var(--transition);
        }

        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(37, 99, 235, 0.2);
        }

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

        .feature-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 56px;
            height: 56px;
            border-radius: 16px;
            margin-bottom: 20px;
            font-size: 1.4rem;
        }

        .icon-blue {
            background: #eff6ff;
            color: var(--primary);
        }

        .icon-cyan {
            background: #ecfeff;
            color: #0891b2;
        }

        .icon-amber {
            background: #fffbeb;
            color: #d97706;
        }

        .icon-green {
            background: #f0fdf4;
            color: #16a34a;
        }

        .icon-purple {
            background: #f5f3ff;
            color: #7c3aed;
        }

        .icon-slate {
            background: #f8fafc;
            color: #475569;
        }

        .feature-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: #0f172a;
        }

        .feature-card p {
            font-size: 0.92rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* ===== Steps ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 0;
            margin-top: 32px;
            position: relative;
        }

        .steps-grid .step-row {
            display: contents;
        }

        .step-item {
            position: relative;
            text-align: center;
            padding: 0 20px;
        }

        .step-item::before {
            content: '';
            position: absolute;
            top: 40px;
            left: -50%;
            width: 100%;
            height: 2px;
            background: linear-gradient(90deg, #dbeafe, var(--primary-light));
            z-index: 0;
        }

        .step-item:first-child::before {
            display: none;
        }

        .step-num {
            position: relative;
            z-index: 1;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 64px;
            height: 64px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff;
            font-size: 1.3rem;
            font-weight: 800;
            border-radius: 20px;
            box-shadow: 0 8px 20px rgba(37, 99, 235, 0.3);
            margin-bottom: 16px;
        }

        .step-item h3 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: #0f172a;
        }

        .step-item p {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.65;
        }

        /* ===== Security Checklist ===== */
        .checklist-wrap {
            background: #fff;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-card);
            overflow: hidden;
        }

        .checklist-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 22px 32px;
            border-bottom: 1px solid var(--border-color);
            background: #f8fafc;
        }

        .checklist-header h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: #0f172a;
        }

        .check-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 14px;
            background: #dcfce7;
            color: #15803d;
            font-size: 0.8rem;
            font-weight: 600;
            border-radius: 999px;
        }

        .checklist-list {
            padding: 12px 32px;
        }

        .check-item {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            padding: 16px 0;
            border-bottom: 1px solid #f1f5f9;
        }

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

        .check-icon {
            flex-shrink: 0;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 26px;
            height: 26px;
            background: #eff6ff;
            border-radius: 8px;
            color: var(--primary);
            font-size: 0.8rem;
            margin-top: 2px;
        }

        .check-item .check-text {
            flex: 1;
        }

        .check-item .check-text strong {
            display: block;
            font-size: 0.95rem;
            font-weight: 600;
            color: #1e293b;
            margin-bottom: 4px;
        }

        .check-item .check-text p {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ===== Cover Card ===== */
        .cover-card {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: var(--transition);
            background: #fff;
            border: 1px solid var(--border-color);
        }

        .cover-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }

        .cover-img {
            position: relative;
            overflow: hidden;
        }

        .cover-img img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

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

        .cover-overlay {
            position: absolute;
            bottom: 12px;
            left: 12px;
            right: 12px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .cover-tag {
            padding: 4px 12px;
            background: rgba(15, 23, 42, 0.75);
            backdrop-filter: blur(8px);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 500;
            border-radius: 999px;
        }

        .cover-tag-urgent {
            padding: 4px 12px;
            background: rgba(220, 38, 38, 0.85);
            backdrop-filter: blur(8px);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 600;
            border-radius: 999px;
        }

        .cover-body {
            padding: 20px 22px;
        }

        .cover-body h3 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: #0f172a;
            line-height: 1.4;
        }

        .cover-body p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.65;
            margin-bottom: 14px;
        }

        .cover-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--primary);
            transition: var(--transition);
        }

        .cover-link:hover {
            gap: 10px;
            color: var(--primary-dark);
        }

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

        .faq-item {
            background: #fff;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            margin-bottom: 14px;
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-item:hover {
            border-color: rgba(37, 99, 235, 0.3);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 24px;
            cursor: pointer;
            background: transparent;
            border: none;
            width: 100%;
            text-align: left;
            font-size: 1rem;
            font-weight: 600;
            color: #0f172a;
        }

        .faq-question i {
            font-size: 0.85rem;
            color: var(--primary);
            transition: var(--transition);
            flex-shrink: 0;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
        }

        .faq-answer-inner {
            padding: 0 24px 20px;
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.7;
            border-top: 1px solid #f1f5f9;
            padding-top: 16px;
            margin-top: 0;
        }

        /* ===== CTA ===== */
        .cta-section {
            position: relative;
            padding: 80px 0;
            background: linear-gradient(135deg, #0f172a, #1e3a8a 60%, #0e7490);
            border-radius: 0;
            margin: 0;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            opacity: 0.15;
            mix-blend-mode: luminosity;
        }

        .cta-inner {
            position: relative;
            z-index: 2;
            text-align: center;
            color: #fff;
        }

        .cta-inner h2 {
            font-size: 2.2rem;
            font-weight: 800;
            margin-bottom: 14px;
        }

        .cta-inner p {
            max-width: 600px;
            margin: 0 auto 30px;
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.75);
        }

        .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 36px;
            background: #fff;
            color: #0f172a;
            font-size: 1rem;
            font-weight: 700;
            border-radius: 999px;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
            transition: var(--transition);
        }

        .cta-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.25);
        }

        .cta-tips {
            display: flex;
            justify-content: center;
            gap: 12px;
            margin-top: 24px;
            flex-wrap: wrap;
        }

        .cta-tip {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.6);
        }

        .cta-tip i {
            color: #4ade80;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #0f172a;
            padding: 64px 0 0;
            color: rgba(255, 255, 255, 0.7);
        }

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

        .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
        }

        .footer-col h4 {
            color: #fff;
            font-size: 0.95rem;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .footer-col ul {
            list-style: none;
        }

        .footer-col ul li {
            margin-bottom: 10px;
        }

        .footer-col ul a {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.6);
            transition: var(--transition);
        }

        .footer-col ul a:hover {
            color: #fff;
            padding-left: 4px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 20px 0;
        }

        .footer-bottom-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.4);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .grid-3 {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .step-item::before {
                display: none;
            }
            .step-item {
                padding: 0;
            }
        }

        @media (max-width: 768px) {
            .main-nav {
                position: fixed;
                top: 72px;
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(12px);
                flex-direction: column;
                align-items: stretch;
                padding: 16px 24px;
                border-bottom: 1px solid var(--border-color);
                box-shadow: 0 12px 32px rgba(0, 0, 0, 0.08);
                transform: translateY(-120%);
                transition: var(--transition);
                z-index: 49;
            }

            .main-nav.open {
                transform: translateY(0);
            }

            .main-nav a {
                padding: 12px 16px;
                text-align: center;
            }

            .main-nav a.active::after {
                display: none;
            }

            .nav-toggle {
                display: flex;
            }

            .nav-cta {
                display: none;
            }

            .page-head h1 {
                font-size: 1.8rem;
            }

            .page-head p {
                font-size: 1rem;
            }

            .section {
                padding: 60px 0;
            }

            .section-title {
                font-size: 1.6rem;
            }

            .grid-3,
            .grid-2 {
                grid-template-columns: 1fr;
            }

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

            .footer-bottom-inner {
                flex-direction: column;
                gap: 8px;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .page-head {
                padding: 60px 0 50px;
            }

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

            .btn-white,
            .btn-ghost {
                width: 100%;
                text-align: center;
            }

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

            .step-item {
                text-align: left;
                display: flex;
                gap: 16px;
                padding: 12px 0;
            }

            .step-num {
                flex-shrink: 0;
                width: 48px;
                height: 48px;
                font-size: 1rem;
                border-radius: 14px;
                margin-bottom: 0;
            }

            .step-item h3 {
                margin-bottom: 4px;
            }

            .checklist-header {
                flex-direction: column;
                gap: 8px;
                align-items: flex-start;
                padding: 18px 20px;
            }

            .checklist-list {
                padding: 10px 20px;
            }

            .cta-inner h2 {
                font-size: 1.6rem;
            }

            .faq-question {
                padding: 16px 18px;
                font-size: 0.9rem;
            }

            .faq-answer-inner {
                padding: 0 18px 16px;
                padding-top: 14px;
            }

            .cover-img img {
                height: 180px;
            }
        }

        /* 数据块组件 */
        .stat-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin: 40px 0;
        }

        .stat-card {
            background: #fff;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            padding: 28px 20px;
            text-align: center;
            box-shadow: var(--shadow-card);
            transition: var(--transition);
        }

        .stat-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }

        .stat-num {
            font-size: 2.2rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 6px;
        }

        .stat-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            font-weight: 500;
        }

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

        @media (max-width: 520px) {
            .stat-grid {
                grid-template-columns: 1fr;
            }
        }

        /* banner 分段导航 */
        .seg-nav {
            display: flex;
            gap: 8px;
            justify-content: center;
            flex-wrap: wrap;
            margin-top: 28px;
        }

        .seg-link {
            padding: 8px 18px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 999px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.8);
            border: 1px solid rgba(255, 255, 255, 0.18);
            transition: var(--transition);
        }

        .seg-link:hover {
            background: rgba(255, 255, 255, 0.22);
            color: #fff;
        }

        .seg-link i {
            margin-right: 5px;
            font-size: 0.75rem;
        }

        /* 图片文字信息块 */
        .info-media {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .info-media-text h2 {
            font-size: 1.6rem;
            font-weight: 800;
            color: #0f172a;
            margin-bottom: 12px;
        }

        .info-media-text p {
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.75;
            margin-bottom: 16px;
        }

        .inline-list {
            list-style: none;
            margin-top: 16px;
        }

        .inline-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 0.9rem;
            color: #334155;
            margin-bottom: 10px;
        }

        .inline-list li i {
            color: var(--primary);
            margin-top: 4px;
            font-size: 0.85rem;
            flex-shrink: 0;
        }

        @media (max-width: 768px) {
            .info-media {
                grid-template-columns: 1fr;
                gap: 32px;
            }
        }

/* roulang page: category2 */
:root {
    --primary: #1e40af;
    --primary-light: #3b82f6;
    --accent: #06b6d4;
    --bg: #f8fafc;
    --surface: #ffffff;
    --ink: #0f172a;
    --muted: #64748b;
    --border: #e2e8f0;
    --radius: 16px;
    --shadow: 0 10px 30px rgba(2, 12, 27, 0.08);
    --shadow-lg: 0 24px 48px rgba(2, 12, 27, 0.12);
    --spacing-section: 80px;
  }
  * { box-sizing: border-box; margin: 0; padding: 0; }
  html { scroll-behavior: smooth; }
  body {
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
    background: var(--bg);
    color: var(--ink);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
  }
  a { text-decoration: none; color: inherit; }
  img { max-width: 100%; display: block; }
  ul { list-style: none; }
  .container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

  .site-header {
    position: sticky; top: 0; z-index: 100;
    background: rgba(255,255,255,0.86);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(226,232,240,0.8);
    transition: box-shadow .3s;
  }
  .site-header .container .inner { display: flex; align-items: center; gap: 24px; height: 72px; }
  .logo { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 1.25rem; color: var(--ink); }
  .logo-icon {
    display: inline-flex; align-items: center; justify-content: center;
    width: 36px; height: 36px; border-radius: 10px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: #fff; font-weight: 800; font-size: 1.1rem;
  }
  .main-nav { display: flex; align-items: center; gap: 8px; margin-left: auto; }
  .main-nav a {
    padding: 8px 16px; border-radius: 999px; font-size: 0.925rem; font-weight: 500;
    color: var(--muted); transition: all .25s;
  }
  .main-nav a:hover { color: var(--primary); background: #eff6ff; }
  .main-nav a.active { color: #fff; background: var(--primary); }
  .nav-cta {
    padding: 10px 22px; border-radius: 999px; background: var(--primary);
    color: #fff; font-weight: 600; font-size: 0.925rem;
    transition: all .3s; box-shadow: 0 4px 14px rgba(30,64,175,0.3);
  }
  .nav-cta:hover { background: var(--primary-light); transform: translateY(-1px); }
  .nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: 8px; }
  .nav-toggle span { display: block; width: 22px; height: 2px; background: var(--ink); margin: 5px 0; transition: all .3s; border-radius: 4px; }
  .nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-toggle.open span:nth-child(2) { opacity: 0; }
  .nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

  .hero {
    position: relative; padding: 100px 0 90px; overflow: hidden;
    background: linear-gradient(135deg, rgba(15,23,42,0.92), rgba(30,64,175,0.82)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
    color: #fff; text-align: center;
  }
  .hero h1 { font-size: clamp(2rem, 4vw, 3rem); font-weight: 800; line-height: 1.2; margin-bottom: 18px; }
  .hero p { font-size: 1.1rem; color: rgba(255,255,255,0.85); max-width: 640px; margin: 0 auto 30px; }
  .hero .hero-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

  .section { padding: 80px 0; }
  .section-alt { background: var(--surface); }
  .section-head { text-align: center; max-width: 680px; margin: 0 auto 48px; }
  .section-tag {
    display: inline-block; padding: 6px 16px; border-radius: 999px;
    background: #dbeafe; color: var(--primary); font-weight: 600; font-size: 0.875rem; margin-bottom: 14px;
  }
  .section-head h2 { font-size: clamp(1.6rem, 3vw, 2.4rem); font-weight: 800; color: var(--ink); line-height: 1.2; }
  .section-head p { color: var(--muted); margin-top: 12px; font-size: 1rem; }

  .card {
    background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 28px; transition: transform .3s, box-shadow .3s, border-color .3s;
  }
  .card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: #bfdbfe; }
  .card-icon {
    width: 48px; height: 48px; border-radius: 12px; display: flex; align-items: center; justify-content: center;
    font-size: 1.2rem; margin-bottom: 16px; color: #fff;
  }
  .card h3 { font-size: 1.15rem; font-weight: 700; margin-bottom: 8px; }
  .card p { color: var(--muted); font-size: 0.925rem; line-height: 1.65; }

  .guide-card { overflow: hidden; padding: 0; border-radius: var(--radius); }
  .guide-card img { width: 100%; height: 180px; object-fit: cover; }
  .guide-card .guide-body { padding: 22px; }
  .guide-card .guide-body h3 { font-size: 1.1rem; margin-bottom: 8px; }
  .guide-card .guide-body p { font-size: 0.9rem; color: var(--muted); }
  .guide-link { display: inline-flex; align-items: center; gap: 6px; margin-top: 14px; color: var(--primary); font-weight: 600; font-size: 0.9rem; }
  .guide-link:hover { gap: 10px; }

  .stats { display: grid; grid-template-columns: repeat(4,1fr); gap: 24px; }
  .stat-card { background: var(--surface); border-radius: var(--radius); padding: 28px; text-align: center; box-shadow: var(--shadow); }
  .stat-number { font-size: 2.2rem; font-weight: 800; color: var(--primary); line-height: 1.2; }
  .stat-label { color: var(--muted); font-size: 0.925rem; margin-top: 6px; }

  .steps { display: grid; grid-template-columns: repeat(4,1fr); gap: 24px; counter-reset: step; }
  .step { position: relative; padding: 28px 20px; background: var(--surface); border-radius: var(--radius); border: 1px solid var(--border); }
  .step::before {
    counter-increment: step; content: counter(step);
    position: absolute; top: 18px; right: 20px;
    font-size: 2rem; font-weight: 800; color: #e2e8f0; line-height: 1;
  }
  .step h3 { font-size: 1.05rem; font-weight: 700; margin-bottom: 8px; }
  .step p { font-size: 0.9rem; color: var(--muted); }

  .faq-list { max-width: 800px; margin: 0 auto; }
  .faq-item {
    background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 22px 24px; margin-bottom: 14px; transition: border-color .3s, box-shadow .3s;
  }
  .faq-item:hover { border-color: #bfdbfe; box-shadow: var(--shadow); }
  .faq-item h3 { font-size: 1.05rem; font-weight: 600; display: flex; justify-content: space-between; align-items: center; cursor: pointer; }
  .faq-item h3::after { content: '+'; font-size: 1.4rem; color: var(--primary); transition: transform .3s; }
  .faq-item.open h3::after { transform: rotate(45deg); }
  .faq-item p { color: var(--muted); margin-top: 12px; font-size: 0.95rem; display: none; }
  .faq-item.open p { display: block; }
  .faq-item:first-child p { display: block; }
  .faq-item:first-child h3::after { transform: rotate(45deg); }

  .cta {
    background: linear-gradient(135deg, #eff6ff 0%, #ecfeff 100%);
    border: 1px solid #e0f2fe; border-radius: 24px;
    padding: 56px 40px; text-align: center;
  }
  .cta h2 { font-size: 1.8rem; font-weight: 800; margin-bottom: 12px; }
  .cta p { color: var(--muted); max-width: 560px; margin: 0 auto 26px; }

  .btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    padding: 12px 28px; border-radius: 50px; font-weight: 600; font-size: 0.95rem;
    transition: all .3s; border: none; cursor: pointer;
  }
  .btn-primary { background: var(--primary); color: #fff; box-shadow: 0 4px 14px rgba(30,64,175,0.3); }
  .btn-primary:hover { background: var(--primary-light); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(30,64,175,0.35); }
  .btn-outline { background: transparent; color: #fff; border: 1.5px solid rgba(255,255,255,0.7); }
  .btn-outline:hover { background: rgba(255,255,255,0.12); transform: translateY(-2px); }
  .btn-white { background: #fff; color: var(--primary); box-shadow: 0 4px 14px rgba(2,12,27,0.1); }
  .btn-white:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(2,12,27,0.15); }

  .feature-row { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
  .feature-row img { border-radius: var(--radius); box-shadow: var(--shadow-lg); }

  .site-footer { background: #0f172a; color: #94a3b8; padding: 64px 0 0; }
  .footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 40px; padding-bottom: 40px; }
  .footer-logo { display: flex; align-items: center; gap: 10px; font-size: 1.2rem; font-weight: 700; color: #fff; margin-bottom: 14px; }
  .footer-logo .logo-icon { width: 34px; height: 34px; font-size: 1rem; }
  .site-footer h4 { color: #fff; font-size: 1rem; font-weight: 600; margin-bottom: 14px; }
  .footer-col ul li { margin-bottom: 8px; }
  .footer-col a { color: #94a3b8; transition: color .3s; font-size: 0.925rem; }
  .footer-col a:hover { color: #ffffff; }
  .footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); padding: 20px 0; }
  .footer-bottom-inner { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; font-size: 0.875rem; }

  .grid-four { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
  .grid-three { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }

  .badge {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 5px 12px; border-radius: 999px; background: #eff6ff;
    color: var(--primary); font-size: 0.8rem; font-weight: 600;
  }
  .badge-accent { background: #ecfeff; color: #0e7490; }
  .badge-green { background: #dcfce7; color: #15803d; }

  @media (max-width: 1024px) {
    .feature-row { grid-template-columns: 1fr; }
    .stats, .steps { grid-template-columns: repeat(2, 1fr); }
    .grid-four { grid-template-columns: repeat(2, 1fr); }
    .grid-three { grid-template-columns: repeat(2, 1fr); }
  }
  @media (max-width: 768px) {
    :root { --spacing-section: 56px; }
    .section { padding: 56px 0; }
    .main-nav {
      position: fixed; top: 72px; left: 0; right: 0; background: #fff;
      flex-direction: column; align-items: stretch; padding: 16px 24px 24px;
      gap: 8px; border-bottom: 1px solid var(--border);
      transform: translateY(-120%); transition: transform .35s ease; box-shadow: var(--shadow-lg);
    }
    .main-nav.open { transform: translateY(0); }
    .nav-toggle { display: block; margin-left: 8px; }
    .nav-cta { display: none; }
    .footer-grid { grid-template-columns: 1fr; gap: 32px; }
    .stats, .steps { grid-template-columns: 1fr; }
    .cta { padding: 40px 24px; }
  }
  @media (max-width: 520px) {
    .container { padding: 0 16px; }
    .hero { padding: 72px 0 64px; }
    .hero h1 { font-size: 1.7rem; }
    .hero-actions .btn { width: 100%; }
    .stat-number { font-size: 1.8rem; }
    .grid-four, .grid-three { grid-template-columns: 1fr; }
  }