/* roulang page: index */
:root{
  --primary:#0e1a2b;--primary-2:#15263a;--accent:#c8a858;--accent-2:#d9bc7a;
  --bg:#f6f7f9;--bg-white:#fff;--bg-dark:#0a121c;--text:#16232e;--text-muted:#5e6e7d;
  --border:#e4e8ed;--radius-lg:20px;--radius-md:12px;--radius-sm:8px;
  --shadow-sm:0 2px 12px rgba(14,26,43,.06);--shadow-md:0 8px 30px rgba(14,26,43,.10);
  --shadow-lg:0 20px 50px rgba(14,26,43,.16);--font-sm:14px;--font-base:16px;
  --font-lg:20px;--font-xl:28px;--font-xxl:42px;--space-sm:12px;--space-md:24px;
  --space-lg:48px;--space-xl:80px;--max-width:1200px;
}
*,*::before,*::after{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",sans-serif;line-height:1.7;color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit;transition:color .3s,box-shadow .3s}
ul,ol{list-style:none}
button,input{font:inherit;border:none;outline:none}
.container{max-width:var(--max-width);margin:0 auto;padding:0 24px}
.site-header{background:rgba(255,255,255,.95);backdrop-filter:blur(12px);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:100}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:72px;gap:24px}
.logo{font-size:24px;font-weight:800;letter-spacing:1px;color:var(--primary);display:flex;align-items:center;gap:8px}
.logo::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--accent);display:inline-block}
.main-nav ul{display:flex;gap:8px;align-items:center}
.main-nav a{display:block;padding:8px 18px;border-radius:100px;font-size:15px;font-weight:500;color:var(--text-muted);position:relative}
.main-nav a:hover{color:var(--primary);background:#f0f2f5}
.main-nav a.active{color:var(--primary);font-weight:600;background:rgba(200,168,88,.12)}
.main-nav a.active::after{content:"";position:absolute;bottom:2px;left:50%;transform:translateX(-50%);width:18px;height:3px;border-radius:2px;background:var(--accent)}
.header-cta{display:inline-flex;align-items:center;gap:6px;background:var(--primary);color:#fff;padding:10px 26px;border-radius:100px;font-size:14px;font-weight:600;transition:background .3s,transform .2s}
.header-cta:hover{background:var(--primary-2);transform:translateY(-2px)}
@media(max-width:768px){
  .header-inner{flex-wrap:wrap;height:auto;padding:14px 0}
  .logo{font-size:20px}
  .main-nav{order:3;width:100%;overflow-x:auto}
  .main-nav ul{display:flex;padding:4px 0;gap:4px}
  .main-nav a{white-space:nowrap;padding:6px 14px;font-size:14px}
  .header-cta{display:none}
}
.hero{position:relative;background:linear-gradient(135deg,rgba(10,18,28,.92),rgba(14,26,43,.82)),url(/assets/images/backpic/back-1.png) center/cover no-repeat;color:#fff;padding:120px 0 100px;text-align:center}
.hero-badge{display:inline-block;background:rgba(200,168,88,.15);border:1px solid rgba(200,168,88,.4);color:var(--accent-2);padding:6px 20px;border-radius:100px;font-size:13px;letter-spacing:2px;margin-bottom:24px}
.hero h1{font-size:var(--font-xxl);font-weight:800;line-height:1.3;margin-bottom:20px;letter-spacing:2px}
.hero p{font-size:18px;line-height:1.8;color:#c7d0da;max-width:720px;margin:0 auto 40px}
.hero-btns{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:8px;padding:14px 36px;border-radius:100px;font-size:15px;font-weight:600;transition:all .3s}
.btn-primary{background:var(--accent);color:var(--primary)}
.btn-primary:hover{background:var(--accent-2);transform:translateY(-2px);box-shadow:0 8px 24px rgba(200,168,88,.3)}
.btn-outline{border:1px solid rgba(255,255,255,.5);color:#fff}
.btn-outline:hover{background:rgba(255,255,255,.1);border-color:#fff}
@media(max-width:768px){
  .hero{padding:80px 0 60px}
  .hero h1{font-size:28px}
  .hero p{font-size:16px}
}
.section{padding:var(--space-xl) 0}
.section-head{text-align:center;max-width:700px;margin:0 auto 56px}
.section-head .sub{color:var(--accent);font-size:14px;letter-spacing:3px;text-transform:uppercase;font-weight:600}
.section-head h2{font-size:32px;font-weight:800;color:var(--primary);margin:10px 0 14px}
.section-head p{color:var(--text-muted);font-size:16px;line-height:1.8}
@media(max-width:768px){.section-head h2{font-size:24px}.section{padding:56px 0}}
.features-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
@media(max-width:1024px){.features-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:520px){.features-grid{grid-template-columns:1fr}}
.feature-card{background:var(--bg-white);border:1px solid var(--border);border-radius:var(--radius-lg);padding:36px 28px;transition:transform .3s,box-shadow .3s}
.feature-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-md)}
.feature-icon{width:56px;height:56px;border-radius:14px;background:linear-gradient(135deg,rgba(200,168,88,.18),rgba(200,168,88,.06));display:flex;align-items:center;justify-content:center;margin-bottom:20px;font-size:26px}
.feature-card h3{font-size:18px;font-weight:700;color:var(--primary);margin-bottom:10px}
.feature-card p{font-size:14px;color:var(--text-muted);line-height:1.7}
.categories-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
@media(max-width:768px){.categories-grid{grid-template-columns:1fr}}
.category-card{background:var(--bg-white);border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--border);transition:transform .3s,box-shadow .3s;display:flex;flex-direction:column}
.category-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg)}
.category-card .cat-img{height:200px;overflow:hidden;position:relative}
.category-card .cat-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.category-card:hover .cat-img img{transform:scale(1.05)}
.category-card .cat-tag{position:absolute;top:16px;left:16px;background:rgba(14,26,43,.8);backdrop-filter:blur(4px);color:#fff;font-size:12px;padding:4px 14px;border-radius:100px;letter-spacing:1px}
.category-card .cat-body{padding:28px;flex:1;display:flex;flex-direction:column}
.category-card h3{font-size:20px;font-weight:700;color:var(--primary);margin-bottom:10px}
.category-card p{font-size:14px;color:var(--text-muted);line-height:1.7;flex:1}
.category-card .cat-link{display:inline-flex;align-items:center;gap:6px;margin-top:18px;color:var(--accent);font-size:14px;font-weight:600}
.category-card .cat-link:hover{gap:12px}
.latest-section{background:var(--bg-white);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.latest-list{display:flex;flex-direction:column;gap:0}
.latest-item{display:flex;align-items:center;gap:24px;padding:24px 0;border-bottom:1px solid var(--border);transition:background .3s;border-radius:var(--radius-md)}
.latest-item:last-child{border-bottom:none}
.latest-item:hover{background:#fafbfc;padding-left:12px}
.latest-item .date{flex-shrink:0;width:80px;text-align:center}
.latest-item .date .day{font-size:28px;font-weight:800;color:var(--accent);line-height:1.2}
.latest-item .date .month{font-size:12px;color:var(--text-muted);text-transform:uppercase}
.latest-item .info{flex:1}
.latest-item .info h3{font-size:17px;font-weight:600;color:var(--primary);margin-bottom:4px}
.latest-item .info h3 a:hover{color:var(--accent)}
.latest-item .info p{font-size:14px;color:var(--text-muted);line-height:1.6}
.latest-item .info .cat-badge{display:inline-block;background:rgba(200,168,88,.12);color:var(--accent);font-size:12px;padding:2px 12px;border-radius:100px;margin-top:6px}
@media(max-width:768px){
  .latest-item{flex-direction:column;align-items:flex-start;gap:8px;padding:20px 0}
  .latest-item .date{width:auto;display:flex;align-items:center;gap:6px}
  .latest-item .date .day{font-size:20px}
}
.empty-tip{text-align:center;padding:40px;color:var(--text-muted);font-size:15px;background:#fafbfc;border-radius:var(--radius-lg);border:1px dashed var(--border)}
.stats-band{background:var(--bg-dark);color:#fff;padding:70px 0}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:32px;text-align:center}
@media(max-width:768px){.stats-grid{grid-template-columns:repeat(2,1fr)}}
.stat-num{font-size:38px;font-weight:800;color:var(--accent-2);line-height:1.2}
.stat-label{font-size:14px;color:#9db0c2;margin-top:8px}
.flow-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;position:relative;margin-top:40px}
@media(max-width:1024px){.flow-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:520px){.flow-grid{grid-template-columns:1fr}}
.flow-step{background:var(--bg-white);border:1px solid var(--border);border-radius:var(--radius-lg);padding:32px 24px;text-align:center;position:relative;transition:transform .3s}
.flow-step:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.flow-num{width:44px;height:44px;border-radius:50%;background:var(--primary);color:var(--accent-2);display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:700;margin:0 auto 16px}
.flow-step h3{font-size:17px;font-weight:700;color:var(--primary);margin-bottom:8px}
.flow-step p{font-size:14px;color:var(--text-muted);line-height:1.6}
.faq-section{background:var(--bg-white);border-top:1px solid var(--border)}
.faq-list{max-width:800px;margin:0 auto;display:flex;flex-direction:column;gap:16px}
.faq-item{border:1px solid var(--border);border-radius:var(--radius-md);overflow:hidden;background:#fafbfc}
.faq-item summary{padding:18px 24px;font-weight:600;color:var(--primary);cursor:pointer;display:flex;justify-content:space-between;align-items:center;list-style:none;font-size:15px}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";font-size:22px;color:var(--accent);transition:transform .3s}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item .faq-body{padding:0 24px 18px;color:var(--text-muted);font-size:14px;line-height:1.8}
.cta-band{background:linear-gradient(135deg,var(--primary),var(--primary-2));padding:80px 0;text-align:center;color:#fff;position:relative;overflow:hidden}
.cta-band::before{content:"";position:absolute;top:-40px;right:-40px;width:300px;height:300px;border-radius:50%;background:rgba(200,168,88,.08)}
.cta-band h2{font-size:32px;font-weight:800;margin-bottom:14px}
.cta-band p{color:#c7d0da;font-size:16px;margin-bottom:32px}
.site-footer{background:var(--bg-dark);color:#9db0c2;padding:56px 0 24px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:40px;margin-bottom:32px}
@media(max-width:768px){.footer-grid{grid-template-columns:1fr}}
.footer-brand .logo{color:#fff;margin-bottom:14px}
.footer-brand p{font-size:14px;line-height:1.7;max-width:320px}
.footer-grid h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px}
.footer-grid ul li{margin-bottom:10px}
.footer-grid a:hover{color:var(--accent-2)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:20px;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;font-size:13px}
.footer-bottom a:hover{color:var(--accent-2)}
@media(max-width:768px){.footer-bottom{flex-direction:column;text-align:center}}
.panel{background:var(--bg-white);border:1px solid var(--border);border-radius:var(--radius-lg);padding:32px}
.panel-title{font-size:20px;font-weight:700;color:var(--primary);margin-bottom:16px;padding-left:14px;border-left:4px solid var(--accent)}
.panel-text{color:var(--text-muted);font-size:14px;line-height:1.8}

/* roulang page: category1 */
:root{
  --primary:#1f5eff;
  --primary-dark:#0f3fbb;
  --primary-light:#eaf1ff;
  --accent:#c9a05a;
  --accent-dark:#b58b44;
  --accent-light:#f7efdf;
  --navy:#0c1a33;
  --bg:#f5f7fb;
  --bg-white:#ffffff;
  --text:#1b2536;
  --text-light:#5e6b80;
  --border:#e4e9f2;
  --radius:16px;
  --radius-sm:10px;
  --shadow:0 12px 32px rgba(12,26,51,.08);
  --shadow-lg:0 24px 60px rgba(12,26,51,.14);
  --container:1200px;
  --header-h:72px;
  --transition:.28s ease;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:'Noto Sans SC',system-ui,-apple-system,'PingFang SC','Microsoft YaHei',sans-serif;font-size:16px;line-height:1.75;color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
ul,ol{list-style:none}
button,input,select{font:inherit;border:none;outline:none}
::selection{background:var(--primary);color:#fff}
.container{max-width:var(--container);margin:0 auto;padding:0 24px}
@media(max-width:768px){.container{padding:0 18px}}

/* Header */
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.92);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid var(--border);transition:box-shadow var(--transition)}
.site-header.scrolled{box-shadow:0 8px 28px rgba(12,26,51,.06)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:var(--header-h);gap:32px}
.logo{font-size:22px;font-weight:700;letter-spacing:.5px;color:var(--navy);display:inline-flex;align-items:center;gap:10px;white-space:nowrap;transition:opacity var(--transition)}
.logo::before{content:"";width:11px;height:11px;border-radius:4px;background:linear-gradient(135deg,var(--primary),var(--accent));display:inline-block;flex-shrink:0}
.logo:hover{opacity:.85}
.main-nav ul{display:flex;align-items:center;gap:4px}
.main-nav a{display:block;padding:8px 18px;font-size:15px;color:var(--text-light);border-radius:40px;transition:all var(--transition);font-weight:400;position:relative}
.main-nav a:hover{color:var(--primary);background:var(--primary-light)}
.main-nav a.active{color:var(--primary);background:var(--primary-light);font-weight:500}
.main-nav a.active::after{content:"";position:absolute;left:50%;transform:translateX(-50%);bottom:4px;width:6px;height:6px;border-radius:50%;background:var(--primary);opacity:.9}
.header-cta{display:inline-flex;align-items:center;gap:8px;background:var(--navy);color:#fff;padding:10px 24px;border-radius:40px;font-size:14px;font-weight:500;transition:all var(--transition);white-space:nowrap}
.header-cta i{font-size:13px}
.header-cta:hover{background:var(--primary);transform:translateY(-2px);box-shadow:0 10px 24px rgba(31,94,255,.3)}
.nav-toggle{display:none;background:#fff;cursor:pointer;width:42px;height:42px;border-radius:10px;align-items:center;justify-content:center;font-size:18px;color:var(--navy);border:1px solid var(--border);transition:var(--transition)}
.nav-toggle:hover{border-color:var(--primary);color:var(--primary)}
@media(max-width:900px){
  .nav-toggle{display:inline-flex}
  .main-nav{position:fixed;top:var(--header-h);left:0;right:0;background:#fff;border-bottom:1px solid var(--border);padding:10px 16px 16px;transform:translateY(-120%);opacity:0;pointer-events:none;transition:all .35s ease;box-shadow:0 20px 40px rgba(12,26,51,.12);z-index:99}
  .main-nav.open{transform:translateY(0);opacity:1;pointer-events:auto}
  .main-nav ul{flex-direction:column;gap:6px;align-items:stretch}
  .main-nav a{text-align:center;padding:13px 16px;font-size:16px}
  .main-nav a.active::after{display:none}
  .header-cta{display:none}
}

/* Page Hero */
.page-hero{position:relative;background-size:cover;background-position:center;padding:120px 0 96px;overflow:hidden}
.page-hero::before{content:"";position:absolute;inset:0;background:linear-gradient(115deg,rgba(9,20,44,.94),rgba(9,20,44,.78) 48%,rgba(9,20,44,.52))}
.page-hero::after{content:"";position:absolute;right:-100px;bottom:-120px;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,rgba(201,160,90,.28),transparent 65%);pointer-events:none}
.page-hero-inner{position:relative;z-index:2;color:#fff;max-width:860px}
.breadcrumb{display:flex;gap:10px;align-items:center;font-size:13.5px;color:rgba(255,255,255,.68);margin-bottom:22px;letter-spacing:.3px}
.breadcrumb a{color:rgba(255,255,255,.68);transition:var(--transition);display:inline-flex;align-items:center;gap:6px}
.breadcrumb a:hover{color:#fff}
.breadcrumb i{font-size:11px;opacity:.7}
.page-hero h1{font-size:50px;line-height:1.22;font-weight:700;margin-bottom:18px;letter-spacing:.5px}
.page-hero h1 span{color:var(--accent)}
.page-hero p{font-size:17.5px;color:rgba(255,255,255,.85);max-width:680px;line-height:1.9}
.hero-actions{display:flex;gap:14px;margin-top:34px;flex-wrap:wrap}
@media(max-width:768px){
  .page-hero{padding:86px 0 64px}
  .page-hero h1{font-size:32px}
  .page-hero p{font-size:15.5px}
}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 30px;border-radius:44px;font-size:15px;font-weight:500;transition:all var(--transition);cursor:pointer;line-height:1.4}
.btn i{font-size:13px}
.btn-solid{background:var(--primary);color:#fff;box-shadow:0 10px 26px rgba(31,94,255,.28)}
.btn-solid:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:0 16px 38px rgba(31,94,255,.36)}
.btn-ghost{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.4);backdrop-filter:blur(4px)}
.btn-ghost:hover{background:rgba(255,255,255,.12);border-color:#fff;transform:translateY(-2px)}
.btn-gold{background:var(--accent);color:#fff;box-shadow:0 10px 26px rgba(201,160,90,.32)}
.btn-gold:hover{background:var(--accent-dark);transform:translateY(-2px);box-shadow:0 16px 38px rgba(201,160,90,.4)}
.btn-outline{background:transparent;color:var(--primary);border:1px solid var(--primary)}
.btn-outline:hover{background:var(--primary);color:#fff;transform:translateY(-2px)}
.btn-block{width:100%}

/* Sections */
.section{padding:96px 0}
.section-alt{background:var(--bg-white)}
.section-soft{background:linear-gradient(180deg,#f5f7fb 0%,#eef2fa 100%)}
.section-head{text-align:center;max-width:680px;margin:0 auto 58px}
.section-tag{display:inline-flex;align-items:center;gap:7px;padding:7px 18px;border-radius:40px;background:var(--primary-light);color:var(--primary);font-size:13px;font-weight:500;margin-bottom:16px;letter-spacing:.4px}
.section-tag.gold{background:var(--accent-light);color:var(--accent-dark)}
.section-head h2{font-size:36px;line-height:1.3;color:var(--navy);font-weight:700;margin-bottom:14px;letter-spacing:.3px}
.section-head p{font-size:15.5px;color:var(--text-light);line-height:1.8}
@media(max-width:768px){
  .section{padding:64px 0}
  .section-head h2{font-size:28px}
  .section-head{margin-bottom:40px}
}

/* Stats */
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.stat-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:34px 24px 30px;text-align:center;transition:all var(--transition);position:relative;overflow:hidden}
.stat-card::after{content:"";position:absolute;left:0;right:0;bottom:0;height:3px;background:linear-gradient(90deg,var(--primary),var(--accent));opacity:0;transition:opacity var(--transition)}
.stat-card:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:transparent}
.stat-card:hover::after{opacity:1}
.stat-ic{width:52px;height:52px;border-radius:14px;background:var(--primary-light);color:var(--primary);font-size:20px;display:flex;align-items:center;justify-content:center;margin:0 auto 18px}
.stat-num{display:block;font-size:40px;font-weight:700;color:var(--navy);line-height:1.2;letter-spacing:.5px}
.stat-label{display:block;margin-top:8px;font-size:14.5px;color:var(--text-light)}
@media(max-width:900px){.stat-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:520px){.stat-grid{grid-template-columns:1fr 1fr;gap:14px}.stat-card{padding:24px 14px}.stat-num{font-size:30px}}

/* Steps */
.step-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;position:relative}
.step-grid::before{content:"";position:absolute;top:48px;left:8%;right:8%;height:1px;background:linear-gradient(90deg,transparent,var(--primary) 15%,var(--primary) 85%,transparent);opacity:.35}
.step-card{position:relative;background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:38px 26px 30px;transition:all var(--transition);overflow:hidden;z-index:1}
.step-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg);border-color:var(--primary-light)}
.step-num{font-size:62px;font-weight:700;line-height:1;background:linear-gradient(135deg,var(--primary) 20%,var(--accent) 100%);-webkit-background-clip:text;background-clip:text;color:transparent;display:block}
.step-card h3{font-size:20px;font-weight:600;margin:18px 0 10px;color:var(--navy)}
.step-card p{font-size:14.5px;color:var(--text-light);line-height:1.8}
.step-link{display:inline-flex;align-items:center;gap:7px;margin-top:18px;font-size:14px;color:var(--primary);font-weight:500;transition:var(--transition)}
.step-link i{font-size:12px;transition:transform var(--transition)}
.step-link:hover i{transform:translateX(5px)}
@media(max-width:1024px){.step-grid{grid-template-columns:1fr 1fr}.step-grid::before{display:none}}
@media(max-width:520px){.step-grid{grid-template-columns:1fr}}

/* Card grid */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.feature-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;transition:all var(--transition);display:flex;flex-direction:column}
.feature-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg);border-color:transparent}
.feature-cover{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--primary-light)}
.feature-cover img{width:100%;height:100%;object-fit:cover;transition:transform .55s ease}
.feature-card:hover .feature-cover img{transform:scale(1.06)}
.feature-cover::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 55%,rgba(12,26,51,.55))}
.badge{position:absolute;top:16px;left:16px;z-index:2;background:rgba(255,255,255,.94);color:var(--navy);font-size:12px;font-weight:500;padding:5px 15px;border-radius:40px;box-shadow:0 4px 14px rgba(12,26,51,.14);backdrop-filter:blur(4px)}
.feature-body{padding:28px 26px 26px;display:flex;flex-direction:column;flex:1}
.feature-body h3{font-size:20px;font-weight:600;color:var(--navy);margin-bottom:10px}
.feature-body > p{font-size:14.5px;color:var(--text-light);margin-bottom:16px;flex:1}
.feature-list li{display:flex;align-items:center;gap:11px;font-size:14px;color:var(--text-light);padding:7px 0;border-bottom:1px dashed var(--border)}
.feature-list li:last-child{border-bottom:none}
.feature-list i{color:var(--primary);font-size:12px;width:16px;text-align:center}
@media(max-width:1024px){.card-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:620px){.card-grid{grid-template-columns:1fr}}

/* Split blocks */
.split-wrap{display:flex;flex-direction:column;gap:72px}
.split-block{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.split-reverse .split-media{order:2}
.split-media{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-lg);position:relative}
.split-media img{width:100%;aspect-ratio:4/3;object-fit:cover}
.split-media::after{content:"";position:absolute;inset:0;border:1px solid rgba(255,255,255,.12);border-radius:var(--radius);pointer-events:none}
.split-content .section-tag{margin-bottom:14px}
.split-content h2{font-size:31px;line-height:1.36;color:var(--navy);margin-bottom:16px;font-weight:700}
.split-content > p{font-size:15.5px;color:var(--text-light);margin-bottom:22px;line-height:1.85}
.split-points li{display:flex;gap:16px;align-items:flex-start;padding:12px 0;border-bottom:1px dashed var(--border)}
.split-points li:last-child{border-bottom:none}
.point-ic{width:34px;height:34px;flex-shrink:0;border-radius:10px;background:var(--primary-light);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:14px}
.split-points h4{font-size:16px;font-weight:600;color:var(--navy);margin-bottom:2px}
.split-points p{font-size:14px;color:var(--text-light);margin:0;line-height:1.7}
@media(max-width:1024px){
  .split-block{grid-template-columns:1fr;gap:32px}
  .split-reverse .split-media{order:0}
  .split-wrap{gap:56px}
}

/* FAQ */
.faq-list{max-width:860px;margin:0 auto;display:flex;flex-direction:column;gap:14px}
.faq-item{background:#fff;border:1px solid var(--border);border-radius:14px;overflow:hidden;transition:all var(--transition)}
.faq-item:hover{border-color:var(--primary);box-shadow:var(--shadow)}
.faq-item summary{cursor:pointer;padding:22px 56px 22px 28px;font-size:16px;font-weight:500;color:var(--navy);list-style:none;position:relative;transition:var(--transition);display:flex;align-items:center;gap:12px}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::before{content:"\f059";font-family:"Font Awesome 6 Free";font-weight:900;font-size:15px;color:var(--primary);opacity:.85;flex-shrink:0}
.faq-item summary::after{content:"\f107";font-family:"Font Awesome 6 Free";font-weight:900;position:absolute;right:26px;top:50%;transform:translateY(-50%);color:var(--primary);transition:transform var(--transition);font-size:15px}
.faq-item[open]{border-color:var(--primary);box-shadow:var(--shadow)}
.faq-item[open] summary{color:var(--primary);background:linear-gradient(0deg,var(--primary-light),transparent 70%)}
.faq-item[open] summary::after{transform:translateY(-50%) rotate(180deg)}
.faq-answer{padding:0 28px 26px 55px;font-size:15px;color:var(--text-light);line-height:1.9;border-top:1px dashed var(--border);margin:0 28px 0 55px;padding-left:0;padding-right:28px}
.faq-answer p{margin-top:18px}
@media(max-width:520px){
  .faq-item summary{font-size:15px;padding-left:18px;padding-right:48px}
  .faq-answer{margin:0 18px 0 18px}
}

/* CTA */
.cta-section{position:relative;background-size:cover;background-position:center;padding:108px 0;text-align:center}
.cta-section::before{content:"";position:absolute;inset:0;background:linear-gradient(130deg,rgba(9,20,44,.94),rgba(15,35,72,.88) 60%,rgba(9,20,44,.8))}
.cta-section .container{position:relative;z-index:2}
.cta-section h2{font-size:38px;font-weight:700;color:#fff;margin-bottom:14px;letter-spacing:.5px}
.cta-section p{font-size:17px;color:rgba(255,255,255,.82);max-width:560px;margin:0 auto 34px;line-height:1.8}
.cta-actions{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
@media(max-width:768px){
  .cta-section{padding:72px 0}
  .cta-section h2{font-size:28px}
}

/* Footer */
.site-footer{background:var(--navy);color:rgba(255,255,255,.72);padding:72px 0 0;position:relative}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,var(--accent),transparent);opacity:.5}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:48px;padding-bottom:52px;border-bottom:1px solid rgba(255,255,255,.1)}
.footer-brand .logo{color:#fff;margin-bottom:12px}
.footer-brand p{font-size:14px;line-height:1.9;margin-top:14px;color:rgba(255,255,255,.5);max-width:280px}
.site-footer h4{font-size:15.5px;font-weight:600;color:#fff;margin-bottom:20px;letter-spacing:.5px;position:relative;padding-left:14px}
.site-footer h4::before{content:"";position:absolute;left:0;top:10px;width:3px;height:14px;border-radius:2px;background:linear-gradient(180deg,var(--primary),var(--accent))}
.footer-col li{margin-bottom:11px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.55);transition:all var(--transition);display:inline-flex;align-items:center;gap:7px}
.footer-col a::before{content:"\f105";font-family:"Font Awesome 6 Free";font-weight:900;font-size:11px;opacity:0;margin-left:-14px;transition:all var(--transition)}
.footer-col a:hover{color:var(--accent);padding-left:14px}
.footer-col a:hover::before{opacity:1;margin-left:0}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;padding:24px 0 28px;font-size:13px;color:rgba(255,255,255,.4);flex-wrap:wrap;gap:10px}
.footer-bottom .domain{font-family:'SF Mono',Consolas,monospace;letter-spacing:.5px}
@media(max-width:900px){.footer-grid{grid-template-columns:1fr;gap:36px}}
@media(max-width:520px){.footer-bottom{flex-direction:column;text-align:center}}

/* Back to top */
.back-top{position:fixed;right:24px;bottom:30px;z-index:99;width:46px;height:46px;border-radius:14px;background:var(--navy);color:#fff;font-size:16px;display:flex;align-items:center;justify-content:center;cursor:pointer;box-shadow:0 10px 26px rgba(12,26,51,.24);opacity:0;visibility:hidden;transform:translateY(14px);transition:all .35s ease;border:none}
.back-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.back-top:hover{background:var(--primary);transform:translateY(-3px)}
@media(max-width:520px){.back-top{right:16px;bottom:20px}}

/* focus accessibility */
a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid rgba(31,94,255,.4);outline-offset:2px;border-radius:6px}

/* roulang page: article */
/* ===== Design Variables ===== */
:root {
  --primary: #0a2540;
  --primary-dark: #061a30;
  --primary-soft: #eef2f8;
  --accent: #c9a35c;
  --accent-light: #e8cd8c;
  --accent-dark: #a8833d;
  --accent-soft: #faf3e6;
  --bg: #f5f6fa;
  --bg-white: #ffffff;
  --bg-dark: #0d1b2a;
  --text: #1f2937;
  --text-light: #6b7280;
  --text-soft: #9ca3af;
  --border: #e5e7eb;
  --border-light: #f0f1f5;
  --radius: 16px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --shadow: 0 8px 30px rgba(10, 37, 64, 0.07);
  --shadow-hover: 0 16px 44px rgba(10, 37, 64, 0.12);
  --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --container: 1200px;
  --header-h: 76px;
}

/* ===== Reset & Base ===== */
*, *::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, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Segoe UI', sans-serif;
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img {
  display: block;
  max-width: 100%;
  height: auto;
}
a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition);
}
ul, ol {
  list-style: none;
}
button, input, textarea {
  font: inherit;
  color: inherit;
}
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 4px;
}
::selection {
  background: rgba(201, 163, 92, 0.25);
}

/* ===== Container ===== */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}

/* ===== Header / Nav ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border-light);
  height: var(--header-h);
  display: flex;
  align-items: center;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}
.logo {
  font-size: 24px;
  font-weight: 800;
  letter-spacing: 0.5px;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 10px;
  white-space: nowrap;
}
.logo::before {
  content: '';
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  box-shadow: 0 0 0 4px rgba(201, 163, 92, 0.15);
}
.main-nav {
  margin: 0 auto;
  padding: 0 32px;
}
.main-nav ul {
  display: flex;
  align-items: center;
  gap: 8px;
}
.main-nav ul li a {
  display: inline-flex;
  align-items: center;
  padding: 10px 18px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-light);
  border-radius: 999px;
  position: relative;
  transition: var(--transition);
}
.main-nav ul li a:hover {
  color: var(--primary);
  background: var(--primary-soft);
}
.main-nav ul li a.active {
  color: var(--primary);
  font-weight: 600;
  background: var(--primary-soft);
}
.main-nav ul li a.active::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 50%;
  transform: translateX(-50%);
  width: 16px;
  height: 3px;
  border-radius: 99px;
  background: var(--accent);
}
.header-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 24px;
  background: var(--primary);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  border-radius: 999px;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
  box-shadow: 0 4px 14px rgba(10, 37, 64, 0.18);
}
.header-cta:hover {
  background: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(201, 163, 92, 0.3);
}
.nav-toggle {
  display: none;
}
.nav-toggle-label {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  z-index: 101;
}
.nav-toggle-label span {
  display: block;
  width: 26px;
  height: 2px;
  background: var(--primary);
  border-radius: 4px;
  transition: var(--transition);
}

/* ===== Page Banner ===== */
.page-banner {
  position: relative;
  background-size: cover;
  background-position: center;
  padding: 72px 0 64px;
  isolation: isolate;
}
.page-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(6, 26, 48, 0.92) 0%, rgba(10, 37, 64, 0.78) 55%, rgba(10, 37, 64, 0.45) 100%);
  z-index: -1;
}
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 20px;
}
.breadcrumb a {
  color: rgba(255, 255, 255, 0.7);
  transition: var(--transition);
}
.breadcrumb a:hover {
  color: var(--accent-light);
}
.breadcrumb-sep {
  color: rgba(255, 255, 255, 0.35);
}
.breadcrumb-current {
  color: var(--accent-light);
  font-weight: 500;
}
.banner-title {
  font-size: 40px;
  font-weight: 800;
  line-height: 1.3;
  color: #fff;
  letter-spacing: 1px;
  margin-bottom: 12px;
}
.banner-subtitle {
  font-size: 16px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.75);
  max-width: 560px;
}

/* ===== Article Section ===== */
.article-section {
  padding: 56px 0 64px;
}
.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  gap: 48px;
  align-items: start;
}
.article-main {
  min-width: 0;
}
.article-card {
  background: var(--bg-white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 48px 52px;
  border: 1px solid var(--border-light);
}
.article-labels {
  display: flex;
  gap: 8px;
  margin-bottom: 20px;
}
.label-category {
  display: inline-flex;
  align-items: center;
  padding: 5px 14px;
  background: var(--accent-soft);
  color: var(--accent-dark);
  font-size: 13px;
  font-weight: 600;
  border-radius: 999px;
  border: 1px solid rgba(201, 163, 92, 0.2);
}
.article-title {
  font-size: 34px;
  font-weight: 800;
  line-height: 1.35;
  color: var(--primary);
  margin-bottom: 20px;
  letter-spacing: -0.5px;
}
.article-meta {
  display: flex;
  align-items: center;
  gap: 20px;
  padding-bottom: 24px;
  margin-bottom: 28px;
  border-bottom: 1px solid var(--border-light);
  color: var(--text-light);
  font-size: 14px;
}
.meta-date {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.meta-date::before {
  content: '\f073';
  font-family: 'Font Awesome 6 Free';
  font-weight: 400;
  color: var(--accent);
}
.article-content-body {
  font-size: 16px;
  line-height: 1.95;
  color: var(--text);
}
.article-content-body p {
  margin-bottom: 18px;
}
.article-content-body h2 {
  font-size: 24px;
  font-weight: 700;
  color: var(--primary);
  margin: 36px 0 16px;
  padding-left: 16px;
  border-left: 4px solid var(--accent);
  border-radius: 0 8px 8px 0;
  line-height: 1.4;
}
.article-content-body h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--primary);
  margin: 28px 0 12px;
}
.article-content-body ul,
.article-content-body ol {
  margin: 16px 0 20px;
  padding-left: 24px;
}
.article-content-body ul li {
  position: relative;
  padding-left: 8px;
  margin-bottom: 10px;
}
.article-content-body ul li::before {
  content: '';
  position: absolute;
  left: -14px;
  top: 12px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
}
.article-content-body ol {
  list-style: decimal;
}
.article-content-body ol li {
  padding-left: 6px;
  margin-bottom: 10px;
}
.article-content-body blockquote {
  margin: 24px 0;
  padding: 20px 24px;
  background: var(--primary-soft);
  border-left: 4px solid var(--accent);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  color: var(--primary);
  font-size: 15px;
  line-height: 1.8;
}
.article-content-body img {
  border-radius: var(--radius-md);
  margin: 24px 0;
  box-shadow: var(--shadow);
  width: auto;
}
.article-content-body a {
  color: var(--accent-dark);
  font-weight: 500;
  border-bottom: 1px solid transparent;
}
.article-content-body a:hover {
  border-bottom-color: var(--accent-dark);
}
.article-content-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 14px;
}
.article-content-body th,
.article-content-body td {
  padding: 12px 16px;
  border: 1px solid var(--border);
  text-align: left;
}
.article-content-body th {
  background: var(--primary-soft);
  font-weight: 600;
  color: var(--primary);
}
.article-content-body code {
  background: var(--primary-soft);
  padding: 2px 8px;
  border-radius: 6px;
  font-size: 14px;
}
.article-not-found {
  text-align: center;
  padding: 80px 40px;
  background: var(--bg-white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.article-not-found h1 {
  font-size: 32px;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 16px;
}
.article-not-found p {
  color: var(--text-light);
  margin-bottom: 32px;
  font-size: 16px;
}

/* ===== Buttons ===== */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  background: var(--primary);
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  border-radius: 999px;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: 0 4px 16px rgba(10, 37, 64, 0.18);
}
.btn-primary:hover {
  background: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(201, 163, 92, 0.32);
}
.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  background: transparent;
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  border-radius: 999px;
  border: 1.5px solid rgba(255, 255, 255, 0.6);
  cursor: pointer;
  transition: var(--transition);
}
.btn-outline:hover {
  border-color: var(--accent-light);
  color: var(--accent-light);
  transform: translateY(-2px);
}

/* ===== Sidebar ===== */
.article-sidebar {
  display: flex;
  flex-direction: column;
  gap: 32px;
  position: sticky;
  top: calc(var(--header-h) + 24px);
}
.sidebar-card {
  background: var(--bg-white);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border-light);
}
.sidebar-card-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 20px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border-light);
}
.sidebar-card-title::before {
  content: '';
  width: 4px;
  height: 20px;
  border-radius: 99px;
  background: var(--accent);
}
.sidebar-list li {
  padding: 10px 0;
  border-bottom: 1px dashed var(--border-light);
}
.sidebar-list li:last-child {
  border-bottom: none;
}
.sidebar-list a {
  display: flex;
  flex-direction: column;
  gap: 4px;
  color: var(--text);
  font-size: 14px;
  font-weight: 500;
  line-height: 1.5;
  transition: var(--transition);
}
.sidebar-list a:hover {
  color: var(--accent-dark);
  transform: translateX(4px);
}
.sidebar-list .list-date {
  font-size: 12px;
  color: var(--text-soft);
  font-weight: 400;
}
.sidebar-nav li a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: var(--bg);
  border-radius: var(--radius-md);
  margin-bottom: 10px;
  color: var(--text);
  font-size: 14px;
  font-weight: 500;
  border: 1px solid transparent;
  transition: var(--transition);
}
.sidebar-nav li a:hover {
  background: var(--primary-soft);
  border-color: rgba(10, 37, 64, 0.08);
  color: var(--primary);
  transform: translateX(4px);
}
.sidebar-nav li a::after {
  content: '\2192';
  color: var(--accent);
  font-size: 16px;
}
.sidebar-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.sidebar-tags .tag-badge {
  display: inline-flex;
  align-items: center;
  padding: 5px 14px;
  background: var(--bg);
  color: var(--text-light);
  font-size: 13px;
  font-weight: 500;
  border-radius: 999px;
  border: 1px solid var(--border);
  cursor: pointer;
  transition: var(--transition);
}
.sidebar-tags .tag-badge:hover {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
  transform: translateY(-2px);
}

/* ===== Related Section ===== */
.related-section {
  padding: 64px 0;
  background: var(--bg-white);
  border-top: 1px solid var(--border-light);
}
.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 36px;
}
.section-title {
  font-size: 30px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.3;
}
.section-title span {
  color: var(--accent);
}
.section-subtitle {
  color: var(--text-light);
  font-size: 15px;
  margin-top: 8px;
}
.section-link {
  color: var(--accent-dark);
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
}
.section-link:hover {
  color: var(--primary);
  transform: translateX(-4px);
  display: inline-block;
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.related-card {
  background: var(--bg-white);
  border-radius: var(--radius);
  border: 1px solid var(--border-light);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
  display: block;
}
.related-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
}
.related-card-img {
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background: var(--primary-soft);
}
.related-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.related-card:hover .related-card-img img {
  transform: scale(1.05);
}
.related-card-body {
  padding: 24px 24px 20px;
}
.related-card-body h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.5;
  margin-bottom: 10px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.related-card-body p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 14px;
}
.related-card-meta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--accent-dark);
  font-weight: 500;
}
.related-card-meta::before {
  content: '\f02c';
  font-family: 'Font Awesome 6 Free';
  font-size: 12px;
}

/* ===== FAQ Section ===== */
.faq-section {
  padding: 64px 0;
  background: var(--bg);
}
.faq-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  max-width: 960px;
  margin: 0 auto;
}
.faq-item {
  background: var(--bg-white);
  border-radius: var(--radius-md);
  padding: 28px;
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow);
  transition: var(--transition);
}
.faq-item:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}
.faq-item h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 10px;
  display: flex;
  align-items: flex-start;
  gap: 10px;
}
.faq-item h3::before {
  content: 'Q';
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent-dark);
  font-size: 13px;
  font-weight: 800;
  flex-shrink: 0;
}
.faq-item p {
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-light);
  padding-left: 34px;
}

/* ===== CTA Section ===== */
.cta-section {
  padding: 72px 0;
  background: var(--primary);
  position: relative;
  overflow: hidden;
  isolation: isolate;
}
.cta-section::before {
  content: '';
  position: absolute;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(201, 163, 92, 0.18) 0%, transparent 65%);
  top: -150px;
  right: -100px;
  z-index: -1;
}
.cta-section::after {
  content: '';
  position: absolute;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.06) 0%, transparent 60%);
  bottom: -120px;
  left: -80px;
  z-index: -1;
}
.cta-inner {
  text-align: center;
  max-width: 720px;
  margin: 0 auto;
}
.cta-title {
  font-size: 32px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 16px;
  letter-spacing: 0.5px;
}
.cta-title span {
  color: var(--accent-light);
}
.cta-subtitle {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 36px;
  line-height: 1.7;
}
.cta-buttons {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--bg-dark);
  padding: 56px 0 0;
  color: rgba(255, 255, 255, 0.7);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.footer-brand .logo {
  color: #fff;
  margin-bottom: 16px;
}
.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  max-width: 320px;
  margin-top: 12px;
}
.site-footer h4 {
  font-size: 15px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 18px;
  letter-spacing: 0.5px;
}
.site-footer ul li {
  margin-bottom: 10px;
}
.site-footer ul li a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.55);
  transition: var(--transition);
  display: inline-block;
}
.site-footer ul li a:hover {
  color: var(--accent-light);
  transform: translateX(4px);
}
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  padding: 20px 0 24px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.35);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .article-layout {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .article-sidebar {
    position: static;
    flex-direction: row;
    flex-wrap: wrap;
  }
  .sidebar-card {
    flex: 1;
    min-width: 240px;
  }
  .related-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 820px) {
  .nav-toggle-label {
    display: flex;
    margin-left: auto;
    margin-right: 12px;
  }
  .main-nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: #fff;
    padding: 24px;
    max-height: 0;
    overflow: hidden;
    transform: translateY(-8px);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    box-shadow: 0 16px 40px rgba(10, 37, 64, 0.12);
    border-bottom: 1px solid var(--border-light);
    margin: 0;
  }
  .main-nav ul {
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
  }
  .main-nav ul li a {
    padding: 14px 18px;
    font-size: 16px;
    border-radius: var(--radius-md);
  }
  .main-nav ul li a.active::after {
    display: none;
  }
  .nav-toggle:checked ~ .main-nav {
    max-height: 360px;
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }
  .nav-toggle:checked ~ .nav-toggle-label span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }
  .nav-toggle:checked ~ .nav-toggle-label span:nth-child(2) {
    opacity: 0;
  }
  .nav-toggle:checked ~ .nav-toggle-label span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }
  .banner-title {
    font-size: 30px;
  }
  .article-card {
    padding: 32px 24px;
  }
  .article-title {
    font-size: 28px;
  }
  .faq-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
  .footer-brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 768px) {
  .header-cta {
    display: none;
  }
}

@media (max-width: 520px) {
  :root {
    --container: 100%;
  }
  .container {
    padding-left: 20px;
    padding-right: 20px;
  }
  .page-banner {
    padding: 48px 0 40px;
  }
  .banner-title {
    font-size: 26px;
  }
  .banner-subtitle {
    font-size: 14px;
  }
  .article-card {
    padding: 24px 18px;
    border-radius: var(--radius-md);
  }
  .article-title {
    font-size: 24px;
    line-height: 1.4;
  }
  .article-meta {
    flex-direction: column;
    gap: 8px;
    align-items: flex-start;
  }
  .related-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .section-title {
    font-size: 24px;
  }
  .section-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }
  .cta-title {
    font-size: 25px;
  }
  .cta-subtitle {
    font-size: 14px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
  .article-layout {
    gap: 28px;
  }
  .sidebar-card {
    min-width: 100%;
  }
}

/* roulang page: category2 */
:root {
  --primary: #1a5cff;
  --primary-light: #4d82ff;
  --primary-dark: #0d3eb8;
  --accent: #00b386;
  --accent-light: #e6f7f2;
  --bg-light: #f5f7fa;
  --bg-white: #ffffff;
  --bg-dark: #0b1220;
  --text-main: #1c2430;
  --text-body: #4a5568;
  --text-muted: #8a94a6;
  --border-light: #e8ecf1;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --shadow-sm: 0 2px 8px rgba(15, 23, 42, .06);
  --shadow-md: 0 8px 30px rgba(15, 23, 42, .08);
  --shadow-lg: 0 20px 50px rgba(15, 23, 42, .12);
  --space-section: 88px;
  --font-family: -apple-system, BlinkMacSystemFont, "SF Pro SC", "PingFang SC", "Segoe UI", "Microsoft YaHei", Roboto, "Helvetica Neue", Arial, sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: var(--font-family); background: var(--bg-white); color: var(--text-main); line-height: 1.7; -webkit-font-smoothing: antialiased; font-size: 16px; }
img { max-width: 100%; display: block; }
a { color: var(--primary); text-decoration: none; transition: color .25s ease; }
a:hover { color: var(--primary-dark); }
ul, ol { list-style: none; }
.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.text-muted { color: var(--text-muted); }
.text-center { text-align: center; }

/*  Header  */
.site-header { position: sticky; top: 0; z-index: 100; background: rgba(255, 255, 255, 0.88); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); border-bottom: 1px solid var(--border-light); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.logo { font-size: 22px; font-weight: 700; color: var(--text-main); letter-spacing: 0.5px; display: inline-flex; align-items: center; }
.logo::before { content: ""; display: inline-block; width: 10px; height: 10px; border-radius: 50%; background: var(--primary); margin-right: 10px; box-shadow: 0 0 0 4px rgba(26, 92, 255, .15); }
.main-nav ul { display: flex; align-items: center; gap: 32px; }
.main-nav a { font-size: 15px; font-weight: 500; color: var(--text-body); padding: 8px 2px; position: relative; }
.main-nav a:hover { color: var(--primary); }
.main-nav a.active { color: var(--primary); }
.main-nav a.active::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 2px; border-radius: 2px; background: var(--primary); }
.header-cta { display: inline-flex; align-items: center; padding: 10px 22px; border-radius: 50px; background: var(--primary); color: #fff; font-size: 14px; font-weight: 600; transition: all .3s ease; }
.header-cta:hover { background: var(--primary-dark); color: #fff; transform: translateY(-2px); box-shadow: 0 8px 20px rgba(26, 92, 255, .3); }
.header-toggle { display: none; background: none; border: none; font-size: 24px; cursor: pointer; color: var(--text-main); }
@media (max-width: 900px) {
  .header-toggle { display: block; }
  .main-nav { position: fixed; top: 72px; left: 0; right: 0; background: #fff; border-bottom: 1px solid var(--border-light); padding: 16px 24px; transform: translateY(-16px); opacity: 0; pointer-events: none; transition: all .3s ease; box-shadow: 0 20px 40px rgba(0,0,0,.08); }
  .main-nav.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .main-nav ul { flex-direction: column; align-items: flex-start; gap: 18px; }
  .header-cta { display: none; }
}

/*  Hero Banner  */
.page-hero { position: relative; padding: 110px 0 100px; background: var(--bg-dark); overflow: hidden; }
.page-hero .bg { position: absolute; inset: 0; background-image: url('/assets/images/backpic/back-2.png'); background-size: cover; background-position: center; opacity: 0.35; }
.page-hero .bg-overlay { position: absolute; inset: 0; background: linear-gradient(105deg, rgba(11,18,32,.95) 0%, rgba(11,18,32,.8) 45%, rgba(11,18,32,.5) 100%); }
.page-hero .container { position: relative; z-index: 2; }
.hero-badge { display: inline-flex; align-items: center; gap: 8px; background: rgba(255,255,255,.12); border: 1px solid rgba(255,255,255,.18); border-radius: 50px; padding: 6px 18px; font-size: 13px; color: #dce4ff; margin-bottom: 24px; letter-spacing: 1px; }
.page-hero h1 { font-size: 46px; line-height: 1.25; color: #fff; font-weight: 700; max-width: 700px; margin-bottom: 20px; }
.page-hero p { font-size: 17px; color: rgba(255,255,255,.8); max-width: 580px; line-height: 1.8; margin-bottom: 36px; }
.hero-btns { display: flex; gap: 14px; flex-wrap: wrap; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; border-radius: 50px; font-size: 15px; font-weight: 600; padding: 12px 26px; border: none; cursor: pointer; transition: all .3s ease; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); color: #fff; transform: translateY(-2px); box-shadow: 0 10px 25px rgba(26,92,255,.35); }
.btn-outline-light { background: transparent; border: 1.5px solid rgba(255,255,255,.6); color: #fff; }
.btn-outline-light:hover { background: rgba(255,255,255,.1); color: #fff; border-color: #fff; transform: translateY(-2px); }
@media (max-width: 768px) {
  .page-hero { padding: 80px 0 70px; }
  .page-hero h1 { font-size: 32px; }
}

/*  Section Utilities  */
.section { padding: var(--space-section) 0; }
.section-header { text-align: center; max-width: 720px; margin: 0 auto 56px; }
.section-eyebrow { font-size: 13px; font-weight: 600; letter-spacing: 2px; text-transform: uppercase; color: var(--primary); margin-bottom: 12px; }
.section-header h2 { font-size: 34px; font-weight: 700; line-height: 1.3; color: var(--text-main); margin-bottom: 14px; }
.section-header p { font-size: 16px; color: var(--text-body); line-height: 1.8; }

/*  Capability Grid  */
.capability-section { background: var(--bg-light); }
.capability-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.cap-card { background: #fff; border-radius: var(--radius-md); padding: 36px 30px; border: 1px solid var(--border-light); transition: all .35s ease; box-shadow: var(--shadow-sm); }
.cap-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: transparent; }
.cap-icon { width: 52px; height: 52px; border-radius: 14px; display: flex; align-items: center; justify-content: center; font-size: 22px; background: var(--accent-light); color: var(--accent); margin-bottom: 18px; }
.cap-card:nth-child(2) .cap-icon { background: rgba(26,92,255,.1); color: var(--primary); }
.cap-card:nth-child(3) .cap-icon { background: #fff3e6; color: #ff8a2a; }
.cap-card h3 { font-size: 19px; font-weight: 600; margin-bottom: 10px; }
.cap-card p { font-size: 14px; color: var(--text-body); line-height: 1.75; }
@media (max-width: 900px) {
  .capability-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
  .capability-grid { grid-template-columns: 1fr; }
}

/*  Architecture Section  */
.arch-section { position: relative; background: var(--bg-dark); color: #fff; }
.arch-section .section-header h2 { color: #fff; }
.arch-section .section-header p { color: rgba(255,255,255,.7); }
.arch-section .section-eyebrow { color: #8fb2ff; }
.arch-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.arch-item { background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.1); border-radius: var(--radius-md); padding: 32px 24px; text-align: center; transition: all .3s ease; }
.arch-item:hover { background: rgba(255,255,255,.12); transform: translateY(-4px); }
.arch-item .icon { font-size: 30px; margin-bottom: 14px; }
.arch-item h3 { font-size: 17px; font-weight: 600; margin-bottom: 8px; }
.arch-item p { font-size: 13px; color: rgba(255,255,255,.6); line-height: 1.7; }
.arch-flow { display: flex; align-items: center; justify-content: center; gap: 0; margin-top: 48px; flex-wrap: wrap; }
.arch-flow .step { display: flex; align-items: center; gap: 10px; padding: 10px 22px; background: rgba(255,255,255,.08); border-radius: 50px; font-size: 14px; font-weight: 500; }
.arch-flow .arrow { color: rgba(255,255,255,.35); font-size: 18px; margin: 0 12px; }
@media (max-width: 1000px) {
  .arch-grid { grid-template-columns: repeat(2, 1fr); }
  .arch-flow { flex-direction: column; gap: 12px; }
  .arch-flow .arrow { transform: rotate(90deg); margin: 4px 0; }
}
@media (max-width: 520px) {
  .arch-grid { grid-template-columns: 1fr; }
}

/*  Process Section  */
.process-section { background: #fff; }
.process-steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 22px; position: relative; }
.process-step { text-align: center; padding: 30px 16px; position: relative; }
.process-step .num { width: 42px; height: 42px; border-radius: 50px; background: var(--primary); color: #fff; font-weight: 700; font-size: 17px; display: inline-flex; align-items: center; justify-content: center; margin-bottom: 14px; box-shadow: 0 6px 16px rgba(26,92,255,.28); }
.process-step h3 { font-size: 16px; font-weight: 600; margin-bottom: 8px; }
.process-step p { font-size: 13px; color: var(--text-muted); line-height: 1.65; }
.process-step::after { content: ""; position: absolute; top: 34%; right: -14px; width: 28px; height: 2px; background: var(--border-light); }
.process-step:last-child::after { display: none; }
@media (max-width: 900px) {
  .process-steps { grid-template-columns: repeat(2, 1fr); gap: 30px 16px; }
  .process-step::after { display: none; }
}
@media (max-width: 480px) {
  .process-steps { grid-template-columns: 1fr; }
}

/*  Article Cards  */
.article-section { background: var(--bg-light); }
.article-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.article-card { background: #fff; border-radius: var(--radius-md); overflow: hidden; border: 1px solid var(--border-light); transition: all .35s ease; box-shadow: var(--shadow-sm); }
.article-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); }
.article-card .cover { position: relative; height: 190px; overflow: hidden; }
.article-card .cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.article-card:hover .cover img { transform: scale(1.04); }
.article-card .tag { position: absolute; top: 14px; left: 14px; background: rgba(255,255,255,.92); border-radius: 50px; padding: 4px 14px; font-size: 12px; font-weight: 600; color: var(--primary); box-shadow: var(--shadow-sm); }
.article-card .body { padding: 24px 22px 26px; }
.article-card .body h3 { font-size: 17px; font-weight: 600; line-height: 1.5; margin-bottom: 10px; }
.article-card .body h3 a { color: var(--text-main); }
.article-card .body h3 a:hover { color: var(--primary); }
.article-card .body p { font-size: 14px; color: var(--text-body); line-height: 1.7; margin-bottom: 16px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.article-meta { display: flex; align-items: center; gap: 6px; font-size: 12px; color: var(--text-muted); }
.article-meta .dot { width: 3px; height: 3px; border-radius: 50%; background: var(--text-muted); }
@media (max-width: 900px) {
  .article-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
  .article-grid { grid-template-columns: 1fr; }
}

/*  FAQ  */
.faq-section { background: #fff; }
.faq-container { max-width: 780px; margin: 0 auto; }
.faq-item { border-bottom: 1px solid var(--border-light); padding: 8px 0; }
.faq-item summary { cursor: pointer; font-size: 16px; font-weight: 500; padding: 16px 4px; display: flex; align-items: center; justify-content: space-between; gap: 20px; transition: color .2s; list-style: none; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; font-size: 22px; font-weight: 300; color: var(--primary); transition: transform .3s ease; flex-shrink: 0; }
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item summary:hover { color: var(--primary); }
.faq-item .answer { padding: 0 40px 20px 4px; font-size: 15px; color: var(--text-body); line-height: 1.8; }

/*  CTA Section  */
.cta-section { position: relative; background: var(--bg-dark); overflow: hidden; }
.cta-section .bg { position: absolute; inset: 0; background-image: url('/assets/images/backpic/back-3.png'); background-size: cover; background-position: center; opacity: 0.25; }
.cta-section .bg-overlay { position: absolute; inset: 0; background: linear-gradient(120deg, rgba(26,92,255,.85), rgba(11,18,32,.92)); }
.cta-inner { position: relative; z-index: 2; text-align: center; padding: 90px 0; }
.cta-inner h2 { font-size: 34px; color: #fff; margin-bottom: 16px; font-weight: 700; }
.cta-inner p { font-size: 16px; color: rgba(255,255,255,.8); max-width: 560px; margin: 0 auto 34px; line-height: 1.8; }
.cta-inner .btn-white { background: #fff; color: var(--primary); font-weight: 700; }
.cta-inner .btn-white:hover { background: #eef2ff; color: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 12px 30px rgba(0,0,0,.25); }
@media (max-width: 600px) {
  .cta-inner h2 { font-size: 26px; }
}

/*  Footer  */
.site-footer { background: var(--bg-dark); color: rgba(255,255,255,.7); padding: 70px 0 30px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 60px; margin-bottom: 50px; }
.footer-brand .logo { color: #fff; font-size: 20px; margin-bottom: 14px; }
.footer-brand p { font-size: 14px; color: rgba(255,255,255,.55); line-height: 1.8; max-width: 280px; }
.site-footer h4 { font-size: 15px; color: #fff; font-weight: 600; margin-bottom: 18px; }
.site-footer li { margin-bottom: 11px; }
.site-footer li a { font-size: 14px; color: rgba(255,255,255,.55); transition: color .2s; }
.site-footer li a:hover { color: #fff; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.1); padding-top: 26px; display: flex; align-items: center; justify-content: space-between; font-size: 13px; color: rgba(255,255,255,.4); flex-wrap: wrap; gap: 8px; }
@media (max-width: 768px) {
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; text-align: center; gap: 6px; }
  .section { --space-section: 64px; }
  .section-header h2 { font-size: 26px; }
}

/*  Focus & Accessibility  */
a:focus-visible, button:focus-visible { outline: 2px solid var(--primary); outline-offset: 3px; }

/* roulang page: category3 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0f2b46;
            --primary-light: #1e3f5f;
            --primary-lighter: #2a5075;
            --accent: #00b894;
            --accent-dark: #009a7a;
            --accent-light: #e6f7f3;
            --bg: #f0f4f8;
            --bg-deep: #0a1a2b;
            --white: #ffffff;
            --text: #1a2b3c;
            --text-light: #5a6b7a;
            --text-lighter: #8a9aa8;
            --border: #e3e8ef;
            --border-light: #eef2f6;
            --radius: 16px;
            --radius-sm: 8px;
            --radius-xs: 4px;
            --shadow-sm: 0 2px 8px rgba(15, 43, 70, 0.06);
            --shadow: 0 4px 24px rgba(15, 43, 70, 0.08);
            --shadow-lg: 0 12px 40px rgba(15, 43, 70, 0.12);
            --transition: all 0.3s ease;
            --container-w: 1200px;
            --space-section: 96px;
            --space-section-sm: 64px;
        }

        /* ===== Reset / Base ===== */
        *,
        *::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, "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
            font-size: 16px;
            line-height: 1.65;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
        }
        ul,
        ol {
            list-style: none;
        }
        .container {
            max-width: var(--container-w);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Header 导航 ===== */
        .site-header {
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-light);
            position: sticky;
            top: 0;
            z-index: 100;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 32px;
        }
        .logo {
            font-size: 22px;
            font-weight: 700;
            letter-spacing: 1px;
            color: var(--primary);
            white-space: nowrap;
        }
        .main-nav ul {
            display: flex;
            align-items: center;
            gap: 36px;
        }
        .main-nav a {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-light);
            padding: 8px 2px;
            position: relative;
            letter-spacing: 0.3px;
        }
        .main-nav a::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 100%;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
            transform: scaleX(0);
            transform-origin: left;
            transition: transform 0.3s ease;
        }
        .main-nav a:hover {
            color: var(--primary);
        }
        .main-nav a:hover::after,
        .main-nav a.active::after {
            transform: scaleX(1);
        }
        .main-nav a.active {
            color: var(--primary);
            font-weight: 600;
        }
        .header-cta {
            display: inline-flex;
            align-items: center;
            background: var(--primary);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            padding: 10px 24px;
            border-radius: 50px;
            transition: var(--transition);
            white-space: nowrap;
        }
        .header-cta:hover {
            background: var(--primary-light);
            transform: translateY(-1px);
            box-shadow: 0 4px 16px rgba(15, 43, 70, 0.2);
        }
        .header-cta:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

        /* ===== Banner ===== */
        .page-banner {
            position: relative;
            background: var(--bg-deep) url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            background-blend-mode: multiply;
            padding: 120px 0 100px;
            text-align: center;
        }
        .page-banner::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(10, 26, 43, 0.85), rgba(15, 43, 70, 0.65));
        }
        .page-banner .container {
            position: relative;
            z-index: 2;
        }
        .banner-tag {
            display: inline-block;
            background: rgba(0, 184, 148, 0.2);
            border: 1px solid rgba(0, 184, 148, 0.4);
            color: #a5f3e0;
            font-size: 13px;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 50px;
            margin-bottom: 24px;
            letter-spacing: 1px;
        }
        .page-banner h1 {
            font-size: 44px;
            font-weight: 700;
            color: #fff;
            line-height: 1.25;
            margin-bottom: 16px;
            letter-spacing: 1px;
        }
        .page-banner h1 span {
            color: #5fe0c0;
        }
        .page-banner .subtitle {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.85);
            max-width: 720px;
            margin: 0 auto 32px;
            line-height: 1.7;
        }
        .banner-actions {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        /* ===== Button ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 50px;
            font-size: 15px;
            font-weight: 600;
            transition: var(--transition);
        }
        .btn-primary {
            background: var(--accent);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--accent-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 184, 148, 0.3);
        }
        .btn-outline-light {
            border: 1px solid rgba(255, 255, 255, 0.6);
            color: #fff;
            background: transparent;
        }
        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
        }
        .btn-dark {
            background: var(--primary);
            color: #fff;
        }
        .btn-dark:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(15, 43, 70, 0.25);
        }
        .btn:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
        }

        /* ===== Section 通用 ===== */
        .section {
            padding: var(--space-section) 0;
        }
        .section-alt {
            background: var(--white);
        }
        .section-deep {
            background: var(--bg-deep);
            color: #fff;
        }
        .section-head {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 52px;
        }
        .section-head .eyebrow {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--accent);
            text-transform: uppercase;
            letter-spacing: 2px;
            margin-bottom: 12px;
        }
        .section-head h2 {
            font-size: 34px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.3;
            margin-bottom: 12px;
        }
        .section-head p {
            font-size: 16px;
            color: var(--text-light);
            line-height: 1.7;
        }
        .section-head.light h2 {
            color: #fff;
        }
        .section-head.light p {
            color: rgba(255, 255, 255, 0.75);
        }

        /* ===== 认证徽章 ===== */
        .badge-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .badge-card {
            background: var(--white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius);
            padding: 36px 28px;
            text-align: center;
            transition: var(--transition);
        }
        .badge-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: var(--accent);
        }
        .badge-icon {
            width: 64px;
            height: 64px;
            margin: 0 auto 20px;
            background: var(--accent-light);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 26px;
            color: var(--accent);
        }
        .badge-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 8px;
        }
        .badge-card p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.6;
        }

        /* ===== 能力卡片 ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
        }
        .feature-card {
            background: var(--white);
            border-radius: var(--radius);
            padding: 36px 32px;
            border: 1px solid var(--border-light);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .feature-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 0;
            background: var(--accent);
            transition: height 0.3s ease;
        }
        .feature-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
        }
        .feature-card:hover::before {
            height: 100%;
        }
        .feature-icon {
            width: 56px;
            height: 56px;
            background: var(--accent-light);
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: var(--accent);
            margin-bottom: 20px;
        }
        .feature-card h3 {
            font-size: 19px;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 10px;
        }
        .feature-card p {
            font-size: 15px;
            color: var(--text-light);
            line-height: 1.7;
        }

        /* ===== 图文分区 ===== */
        .split-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }
        .split-media {
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            position: relative;
        }
        .split-media img {
            width: 100%;
            height: 420px;
            object-fit: cover;
        }
        .split-media::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(15, 43, 70, 0.3), transparent);
            pointer-events: none;
        }
        .split-content h2 {
            font-size: 30px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.3;
            margin-bottom: 16px;
        }
        .split-content p {
            font-size: 16px;
            color: var(--text-light);
            line-height: 1.75;
            margin-bottom: 16px;
        }
        .split-content ul {
            margin: 20px 0 0;
        }
        .split-content ul li {
            padding: 10px 0;
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-size: 15px;
            color: var(--text);
            border-bottom: 1px solid var(--border-light);
        }
        .split-content ul li:last-child {
            border-bottom: none;
        }
        .split-content ul li i {
            color: var(--accent);
            font-size: 16px;
            margin-top: 3px;
        }

        /* ===== 流程步骤 ===== */
        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            counter-reset: process;
        }
        .process-step {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius);
            padding: 32px 28px;
            position: relative;
            transition: var(--transition);
        }
        .process-step:hover {
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-4px);
        }
        .process-step .step-num {
            font-size: 14px;
            font-weight: 700;
            color: var(--accent);
            letter-spacing: 2px;
            margin-bottom: 16px;
            display: block;
        }
        .process-step .step-num::before {
            content: "0";
        }
        .process-step h3 {
            font-size: 18px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 10px;
        }
        .process-step p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            line-height: 1.6;
        }

        /* ===== 内容列表 ===== */
        .compliance-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }
        .compliance-item {
            background: var(--white);
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .compliance-item:hover {
            box-shadow: var(--shadow);
            transform: translateY(-2px);
        }
        .compliance-item-inner {
            padding: 28px;
            display: flex;
            gap: 20px;
        }
        .compliance-date {
            flex-shrink: 0;
            text-align: center;
            background: var(--accent-light);
            border-radius: var(--radius-sm);
            padding: 12px 16px;
            min-width: 64px;
        }
        .compliance-date .day {
            font-size: 22px;
            font-weight: 700;
            color: var(--accent);
            line-height: 1;
        }
        .compliance-date .month {
            font-size: 13px;
            color: var(--text-light);
            margin-top: 4px;
        }
        .compliance-item h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 6px;
            line-height: 1.4;
        }
        .compliance-item p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.6;
            margin-bottom: 10px;
        }
        .compliance-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 500;
            color: var(--accent);
            background: var(--accent-light);
            padding: 4px 12px;
            border-radius: 50px;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--white);
            border-radius: var(--radius);
            margin-bottom: 16px;
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--border);
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            padding: 22px 28px;
            font-size: 16px;
            font-weight: 600;
            color: var(--primary);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            user-select: none;
        }
        .faq-question i {
            color: var(--accent);
            font-size: 14px;
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }
        .faq-item.open .faq-question i {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
        }
        .faq-answer-inner {
            padding: 0 28px 24px;
            font-size: 15px;
            color: var(--text-light);
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            border-radius: 24px;
            padding: 56px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: "";
            position: absolute;
            top: -60px;
            right: -60px;
            width: 200px;
            height: 200px;
            background: rgba(0, 184, 148, 0.2);
            border-radius: 50%;
        }
        .cta-section::after {
            content: "";
            position: absolute;
            bottom: -40px;
            left: -40px;
            width: 120px;
            height: 120px;
            background: rgba(0, 184, 148, 0.15);
            border-radius: 50%;
        }
        .cta-section h2 {
            font-size: 30px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }
        .cta-section p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.8);
            max-width: 600px;
            margin: 0 auto 28px;
            position: relative;
            z-index: 1;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-deep);
            color: rgba(255, 255, 255, 0.6);
            padding: 64px 0 0;
            margin-top: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 48px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-brand .logo {
            color: #fff;
            font-size: 22px;
            margin-bottom: 12px;
            display: inline-block;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.5);
            margin-top: 12px;
        }
        .site-footer h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 18px;
        }
        .site-footer ul li {
            margin-bottom: 10px;
        }
        .site-footer ul a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.5);
            transition: var(--transition);
        }
        .site-footer ul a:hover {
            color: var(--accent);
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 24px 0;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.35);
            flex-wrap: wrap;
            gap: 8px;
        }

        /* ===== 响应式断点 ===== */
        @media (max-width: 1024px) {
            .container {
                padding: 0 20px;
            }
            .badge-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .split-block {
                grid-template-columns: 1fr;
                gap: 36px;
            }
            .split-media img {
                height: 320px;
            }
            .main-nav {
                overflow-x: auto;
                -webkit-overflow-scrolling: touch;
            }
            .main-nav ul {
                gap: 24px;
                padding: 4px 0;
            }
        }

        @media (max-width: 768px) {
            :root {
                --space-section: 64px;
                --space-section-sm: 48px;
            }
            .header-inner {
                height: 64px;
                gap: 16px;
            }
            .logo {
                font-size: 18px;
            }
            .header-cta {
                padding: 8px 16px;
                font-size: 13px;
            }
            .main-nav a {
                font-size: 14px;
                white-space: nowrap;
            }
            .page-banner {
                padding: 80px 0 64px;
            }
            .page-banner h1 {
                font-size: 30px;
            }
            .page-banner .subtitle {
                font-size: 16px;
            }
            .section-head h2 {
                font-size: 26px;
            }
            .section-head p {
                font-size: 15px;
            }
            .compliance-list {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .cta-section {
                padding: 40px 24px;
            }
            .cta-section h2 {
                font-size: 24px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .badge-grid {
                grid-template-columns: 1fr;
            }
            .features-grid {
                grid-template-columns: 1fr;
            }
            .process-grid {
                grid-template-columns: 1fr;
            }
            .main-nav ul {
                gap: 16px;
            }
            .main-nav a {
                font-size: 13px;
            }
            .page-banner h1 {
                font-size: 24px;
            }
            .banner-actions {
                flex-direction: column;
                align-items: center;
            }
            .btn {
                width: 100%;
                justify-content: center;
            }
            .split-media img {
                height: 240px;
            }
            .compliance-item-inner {
                flex-direction: column;
            }
            .compliance-date {
                align-self: flex-start;
            }
            .faq-question {
                padding: 18px 20px;
                font-size: 15px;
            }
            .faq-answer-inner {
                padding: 0 20px 20px;
            }
        }

        /* ===== 动效 ===== */
        .fade-up {
            animation: fadeUp 0.6s ease both;
        }
        @keyframes fadeUp {
            from {
                opacity: 0;
                transform: translateY(24px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .delay-1 {
            animation-delay: 0.1s;
        }
        .delay-2 {
            animation-delay: 0.2s;
        }
        .delay-3 {
            animation-delay: 0.3s;
        }