/* roulang page: index */
:root{
  --primary:#2563eb;
  --primary-dark:#1e40af;
  --primary-light:#dbeafe;
  --accent:#0ea5e9;
  --secondary:#f59e0b;
  --dark:#0b1220;
  --dark-2:#111a2e;
  --dark-3:#1a2540;
  --bg:#f8fafc;
  --bg-gray:#f1f5f9;
  --white:#ffffff;
  --text:#0f172a;
  --text-light:#475569;
  --text-weak:#94a3b8;
  --border:#e2e8f0;
  --shadow-sm:0 1px 3px rgba(15,23,42,.08);
  --shadow-md:0 6px 16px rgba(15,23,42,.08);
  --shadow-lg:0 16px 40px rgba(15,23,42,.12);
  --radius:16px;
  --radius-sm:10px;
  --radius-lg:24px;
  --space-section:90px;
  --font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  --transition:.3s ease;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:var(--font-family);background:var(--bg);color:var(--text);line-height:1.7;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}
img{max-width:100%;height:auto;display:block}
a{text-decoration:none;color:inherit}
ul,ol{list-style:none}
button,input,select,textarea{font-family:inherit;font-size:inherit}
.container{max-width:1200px;margin:0 auto;padding:0 28px;width:100%}
.section{padding:var(--space-section) 0}
.section-alt{background:var(--bg-gray)}
.section-dark{background:var(--dark);color:var(--white)}

/* header */
.site-header{position:sticky;top:0;z-index:1000;background:rgba(255,255,255,.92);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid rgba(226,232,240,.7);transition:box-shadow .3s}
.site-header.scrolled{box-shadow:0 4px 30px rgba(15,23,42,.08)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:72px;gap:20px}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-icon{width:42px;height:42px;border-radius:12px;background:linear-gradient(135deg,#2563eb,#0ea5e9);display:flex;align-items:center;justify-content:center;color:#fff;font-size:20px;box-shadow:0 6px 16px rgba(37,99,235,.35)}
.logo-text{font-size:1.2rem;font-weight:800;letter-spacing:.5px;color:var(--text);line-height:1.3}
.logo-text span{display:block;font-size:.72rem;font-weight:500;color:var(--text-light);letter-spacing:1.2px;text-transform:uppercase}
.main-nav{display:flex;align-items:center;gap:8px;margin-left:auto}
.nav-item{position:relative;padding:10px 18px;border-radius:10px;font-size:.95rem;font-weight:600;color:var(--text-light);transition:all .3s;line-height:1.4;white-space:nowrap}
.nav-item:hover{color:var(--primary);background:var(--primary-light)}
.nav-item.active{color:var(--primary);background:var(--primary-light)}
.nav-item.active::after{content:"";position:absolute;left:18px;right:18px;bottom:4px;height:3px;border-radius:3px;background:linear-gradient(90deg,#2563eb,#0ea5e9)}
.nav-mega{position:absolute;top:100%;left:50%;transform:translateX(-50%) translateY(10px);background:var(--white);border-radius:16px;box-shadow:var(--shadow-lg);padding:24px;width:640px;opacity:0;visibility:hidden;transition:all .3s ease;border:1px solid var(--border);pointer-events:none}
.has-mega:hover .nav-mega{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0);pointer-events:auto}
.mega-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.mega-card{display:flex;align-items:flex-start;gap:14px;padding:14px;border-radius:12px;background:var(--bg);border:1px solid transparent;transition:all .3s}
.mega-card:hover{background:var(--primary-light);border-color:rgba(37,99,235,.2)}
.mega-icon{width:44px;height:44px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:1.1rem;flex-shrink:0}
.mega-card h4{font-size:.92rem;font-weight:700;margin-bottom:2px;color:var(--text)}
.mega-card p{font-size:.78rem;color:var(--text-light);line-height:1.5}
.nav-cta{background:linear-gradient(135deg,#2563eb,#1e40af);color:#fff;padding:10px 22px;border-radius:10px;font-weight:600;font-size:.9rem;display:flex;align-items:center;gap:8px;transition:all .3s;white-space:nowrap;margin-left:8px}
.nav-cta:hover{transform:translateY(-2px);box-shadow:0 8px 28px rgba(37,99,235,.4);color:#fff}
.header-mobile-toggle{display:none;width:44px;height:44px;border-radius:10px;border:1px solid var(--border);background:var(--white);color:var(--text);align-items:center;justify-content:center;font-size:1.3rem;cursor:pointer}
@media(max-width:1024px){
  .main-nav{position:fixed;top:72px;right:-100%;flex-direction:column;background:var(--white);width:min(360px,100vw);height:calc(100vh - 72px);padding:24px;gap:8px;align-items:flex-start;overflow-y:auto;transition:right .4s cubic-bezier(.4,0,.2,1);box-shadow:-8px 0 30px rgba(0,0,0,.08);border-left:1px solid var(--border);z-index:1001;margin:0}
  .main-nav.open{right:0}
  .nav-item{display:block;width:100%;padding:14px 16px;font-size:1rem}
  .nav-mega{position:static;transform:none;opacity:1;visibility:visible;width:100%;box-shadow:none;border:1px solid var(--border);background:var(--bg);padding:12px;margin-top:6px;pointer-events:auto}
  .nav-cta{margin:10px 0 0;width:100%;justify-content:center}
  .header-mobile-toggle{display:flex;align-items:center;justify-content:center}
}
/* hero */
.hero{position:relative;background:linear-gradient(135deg,#0b1220 0%,#111a2e 50%,#1a2540 100%);color:#fff;padding:110px 0 100px;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;background-image:url('/assets/images/backpic/back-1.webp');background-size:cover;background-position:center;opacity:.16;}
.hero::after{content:"";position:absolute;top:-200px;right:-200px;width:600px;height:600px;background:radial-gradient(circle,rgba(37,99,235,.35),transparent 70%);border-radius:50%}
.hero-inner,.hero-grid{position:relative;z-index:2}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:64px;align-items:center}
.badge{display:inline-flex;align-items:center;gap:8px;padding:8px 16px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);border-radius:100px;font-size:.8rem;font-weight:600;letter-spacing:.5px;margin-bottom:20px;backdrop-filter:blur(10px)}
.badge .pulse-dot{width:8px;height:8px;border-radius:50%;background:#22c55e;box-shadow:0 0 0 4px rgba(34,197,94,.25)}
.hero h1{font-size:2.9rem;line-height:1.2;font-weight:900;margin-bottom:18px;letter-spacing:1px}
.hero h1 .gradient-text{background:linear-gradient(to right,#60a5fa,#22d3ee);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;color:transparent}
.hero-desc{font-size:1.1rem;color:rgba(255,255,255,.85);margin-bottom:32px;max-width:540px;line-height:1.8}
.hero-desc span{background:rgba(255,255,255,.12);padding:1px 4px;border-radius:4px}
.hero-stats{display:flex;gap:32px;margin-bottom:40px;flex-wrap:wrap}
.hero-stat h3{font-size:2rem;font-weight:800;line-height:1.1;color:#fff}
.hero-stat h3 i{color:#38bdf8;margin-right:4px}
.hero-stat p{font-size:.8rem;color:rgba(255,255,255,.6);letter-spacing:1px}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;padding:16px 36px;border-radius:14px;font-size:1rem;font-weight:600;transition:all .35s ease;border:none;cursor:pointer;line-height:1.4;text-align:center}
.btn-primary{background:linear-gradient(135deg,#2563eb,#0ea5e9);color:#fff;box-shadow:0 10px 30px rgba(37,99,235,.45)}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 16px 40px rgba(37,99,235,.55)}
.btn-ghost{background:rgba(255,255,255,.1);color:#fff;border:1px solid rgba(255,255,255,.3);backdrop-filter:blur(10px)}
.btn-ghost:hover{background:rgba(255,255,255,.22);transform:translateY(-3px)}
.hero-visual{position:relative;border-radius:28px;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.12);padding:18px;backdrop-filter:blur(12px);box-shadow:0 30px 60px rgba(0,0,0,.4)}
.mockup-card{background:rgba(255,255,255,.08);border-radius:20px;padding:22px;border:1px solid rgba(255,255,255,.1)}
.mock-card-img{width:100%;background-image:url('/assets/images/coverpic/cover-1.webp');background-size:cover;background-position:center;aspect-ratio:16/8;border-radius:12px;margin-bottom:18px;position:relative}
.mock-card-img::after{content:"";position:absolute;inset:0;background:linear-gradient(to bottom right,rgba(37,99,235,.12),rgba(14,165,233,.18));border-radius:12px}
.mock-row{display:flex;gap:10px;margin-bottom:14px;align-items:center}
.mock-row .label{font-size:10px;letter-spacing:1px;color:rgba(255,255,255,.5);text-transform:uppercase;width:82px;flex-shrink:0}
.mock-row .track{flex:1;height:8px;border-radius:8px;background:rgba(255,255,255,.14);overflow:hidden}
.mock-row .track i{display:block;height:100%;border-radius:8px;background:linear-gradient(90deg,#2563eb,#22d3ee)}
.mock-list{display:flex;justify-content:space-between;margin-top:20px;gap:8px}
.mock-item{flex:1;background:rgba(255,255,255,.06);border-radius:10px;padding:10px;text-align:center;font-size:.7rem;color:rgba(255,255,255,.7)}
@media(max-width:1024px){
  .hero{padding:80px 0;background-size:auto}
  .hero-grid{grid-template-columns:1fr;gap:50px}
  .hero h1{font-size:2.2rem}
}
/* section headers */
.section-head{text-align:center;max-width:860px;margin:0 auto 60px}
.section-tag{display:inline-flex;align-items:center;gap:6px;margin-bottom:12px;padding:7px 18px;background:var(--primary-light);color:var(--primary);border-radius:100px;font-size:.8rem;font-weight:700;letter-spacing:.5px}
.section-tag i{font-size:.8rem}
.section-title{font-size:2.3rem;font-weight:900;line-height:1.3;color:var(--text);letter-spacing:.5px}
.section-sub{color:var(--text-light);font-size:1.05rem;margin-top:14px}
/* platform-grid */
.category-cards{display:grid;grid-template-columns:repeat(2,1fr);gap:32px}
.category-card{position:relative;background:var(--white);border-radius:var(--radius-lg);padding:40px 36px;border:1px solid var(--border);transition:all .4s ease;overflow:hidden;box-shadow:var(--shadow-sm)}
.category-card::before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,#2563eb,#f59e0b,#0ea5e9);opacity:0;transition:opacity .3s}
.category-card:hover::before{opacity:1}
.category-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:#bcd3ff}
.cat-img-wrap{border-radius:16px;overflow:hidden;margin-bottom:26px;aspect-ratio:16/9;position:relative}
.cat-img-wrap img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.category-card:hover .cat-img-wrap img{transform:scale(1.04)}
.cat-ico{width:58px;height:58px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:1.5rem;margin-bottom:18px;background:linear-gradient(135deg,#2563eb,#0ea5e9);color:#fff;box-shadow:0 10px 24px rgba(37,99,235,.3)}
.cat-ico.yellow{background:linear-gradient(135deg,#f59e0b,#f97316);box-shadow:0 10px 24px rgba(245,158,11,.3)}
.cat-ico.teal{background:linear-gradient(135deg,#10b981,#0d9488);box-shadow:0 10px 24px rgba(16,185,129,.3)}
.cat-ico.purple{background:linear-gradient(135deg,#8b5cf6,#d946ef);box-shadow:0 10px 24px rgba(139,92,246,.3)}
.category-card h3{font-size:1.45rem;font-weight:800;margin-bottom:10px;color:var(--text)}
.category-card p{color:var(--text-light);margin-bottom:20px;font-size:.95rem}
.cat-points{display:flex;flex-direction:column;gap:12px;margin-bottom:24px}
.point-row{display:flex;align-items:center;gap:12px;font-size:.92rem;color:var(--text);position:relative;padding-left:26px}
.point-row i{position:absolute;left:0;color:var(--primary);font-size:.85rem;width:18px;height:18px;display:flex;align-items:center;justify-content:center;border-radius:50%;background:rgba(37,99,235,.08)}
.card-link{display:inline-flex;align-items:center;gap:6px;font-weight:700;color:var(--primary);border-bottom:2px solid transparent;transition:all .3s;padding-bottom:4px}
.card-link:hover{border-bottom-color:var(--primary);gap:12px}
@media(max-width:840px){
  .category-cards{grid-template-columns:1fr}
  .section{padding:60px 0}
}
/* metric strip */
.metric-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:2px;background:var(--primary);border-radius:20px;overflow:hidden;box-shadow:var(--shadow-lg);margin-bottom:0}
.metric{background:linear-gradient(135deg,#1e40af,#2563eb);padding:38px 24px;text-align:center;color:#fff;position:relative;overflow:hidden}
.metric::after{content:"";position:absolute;top:-40px;right:-40px;width:100px;height:100px;background:rgba(255,255,255,.08);border-radius:50%}
.metric h4{font-size:2.1rem;font-weight:900;margin-bottom:6px}
.metric .m-label{font-size:.85rem;color:rgba(255,255,255,.75);letter-spacing:1px;text-transform:uppercase}
.metric .fa-bolt{color:#fbbf24}
.metric .fa-shield{color:#34d399}
.metric .fa-headset{color:#7dd3fc}
.metric .fa-sync{color:#fdba74}
@media(max-width:768px){
  .metric-strip{grid-template-columns:repeat(2,1fr);gap:1px}
  .metric{padding:26px 18px}
  .metric h4{font-size:1.6rem}
}
/* feature compare */
.service-panel{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.service-image{position:relative;border-radius:24px;overflow:hidden;box-shadow:var(--shadow-lg)}
.service-image img{width:100%;aspect-ratio:4/3;object-fit:cover}
.service-info h3{font-size:2rem;font-weight:800;line-height:1.35;margin-bottom:22px}
.feature-with-ic{display:flex;align-items:flex-start;gap:18px;padding:20px 0;border-bottom:1px solid var(--border)}
.feature-with-ic:last-child{border-bottom:none}
.fi-ico{flex-shrink:0;width:46px;height:46px;border-radius:12px;background:var(--primary-light);display:flex;align-items:center;justify-content:center;color:var(--primary);font-size:1.2rem}
.feature-with-ic h4{font-size:1.1rem;font-weight:800;margin-bottom:6px}
.feature-with-ic p{color:var(--text-light);font-size:.9rem;line-height:1.7}
@media(max-width:1024px){
  .service-panel{grid-template-columns:1fr;gap:36px}
  .service-info h3{font-size:1.6rem}
}
/* card band */
.steps-flex{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.step-item{position:relative;padding:0 12px 0 8px;margin-top:40px}
.step-icon{width:66px;height:66px;border-radius:18px;background:var(--dark);color:#fff;display:flex;align-items:center;justify-content:center;font-size:1.7rem;box-shadow:0 12px 28px rgba(11,18,32,.25);margin-bottom:16px}
.step-no{color:var(--primary);font-weight:700;text-transform:uppercase;letter-spacing:1px;font-size:.8rem;margin-top:50px}
.step-item h4{font-size:1.08rem;font-weight:800;margin:8px 0;color:var(--white)}
.step-item p{color:rgba(255,255,255,.7);font-size:.9rem;line-height:1.7}
.step-line{position:absolute;top:100px;left:0;right:80%;border-top:2px dashed rgba(255,255,255,.14)}
@media(max-width:980px){
  .steps-flex{grid-template-columns:repeat(2,1fr);gap:20px}
}
/* tabs / card 2 color: yellow gradient */
.tab-card-wrap{background:var(--white);border-radius:24px;padding:22px;box-shadow:var(--shadow-sm);transition:all .35s}
.tab-card-wrap:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.tab-card-wrap .tag{border-radius:6px;display:inline-block;padding:4px 10px;font-size:.75rem;font-weight:700;margin-bottom:14px}
.card-media{width:100%;background-image:url('/assets/images/coverpic/cover-7.webp');background-size:cover;background-position:center;aspect-ratio:16/10;border-radius:14px;margin-bottom:18px}
.card-soft-body h3{font-size:1.25rem;margin-bottom:10px}
.card-soft-body i.bullet{color:var(--secondary)}
.icon-wrap{width:52px;height:52px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:1.4rem;color:#fff}
.bg-gradient-y{background:linear-gradient(135deg,#f59e0b,#dc2626)}
.bg-gradient-blue{background:linear-gradient(135deg,#2563eb,#38bdf8)}
.bg-gradient-green{background:linear-gradient(135deg,#10b981,#34d399)}
/* rows useful */
.compact-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.feature-mini{background:var(--white);border-radius:18px;padding:28px;border:1px solid var(--border);box-shadow:var(--shadow-sm);transition:all .35s}
.feature-mini:hover{border-color:transparent;box-shadow:var(--shadow-md)}
.feature-mini .icon-cir{width:48px;height:48px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:1.4rem;margin-bottom:14px}
.fm-1{background:#dbeafe;color:#2563eb}
.fm-2{background:#fef3c7;color:#d97706}
.fm-3{background:#d1fae5;color:#059669}
.fm-4{background:#fce7f3;color:#db2777}
.fm-5{background:#ede9fe;color:#7c3aed}
.fm-6{background:#e0f2fe;color:#0284c7}
.feature-mini h3{font-size:1.05rem;font-weight:800;margin-bottom:8px}
.feature-mini p{font-size:.9rem;color:var(--text-light);line-height:1.6}
@media(max-width:980px){
  .compact-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:640px){
  .compact-grid{grid-template-columns:1fr}
  .container{padding:0 20px}
  .section-title{font-size:1.7rem}
}
/* cms area */
.news-panel{display:grid;grid-template-columns:repeat(auto-fill,minmax(330px,1fr));gap:28px;margin-top:22px}
.news-item{background:var(--white);border-radius:18px;border:1px solid var(--border);overflow:hidden;transition:all .35s;box-shadow:var(--shadow-sm)}
.news-item:hover{transform:translateY(-6px);box-shadow:var(--shadow-md)}
.news-thumb{height:190px;background-image:url('/assets/images/coverpic/cover-3.webp');background-size:cover;background-position:center;position:relative}
.news-thumb-2{background-image:url('/assets/images/coverpic/cover-5.webp')}
.news-thumb-3{background-image:url('/assets/images/coverpic/cover-8.png')}
.news-content{padding:24px}
.news-meta{display:flex;justify-content:space-between;align-items:center;font-size:.76rem;color:var(--text-weak);margin-bottom:12px}
.news-meta span i{margin-right:4px}
.news-badge{border-radius:6px;padding:3px 10px;font-weight:700;font-size:.74rem;color:#2563eb;background:#eff6ff}
.news-item h3{font-size:1.13rem;font-weight:800;line-height:1.6;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-item p{color:var(--text-light);font-size:.9rem;line-height:1.7;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;margin-top:12px}
.news-empty{padding:32px;text-align:center;grid-column:1/-1;background:var(--bg);border-radius:14px;color:var(--text-light)}
/* FAQ */
.faq-panel{max-width:760px;margin:36px auto 0}
.faq-accordion{background:var(--white);border:1px solid var(--border);border-radius:16px;margin-bottom:12px;overflow:hidden}
.faq-question{padding:26px 22px;font-weight:800;font-size:1.02rem;display:flex;justify-content:space-between;align-items:center;gap:16px;cursor:pointer;background:var(--bg)}
.faq-question span{font-weight:900;font-size:1.1rem;color:var(--primary);transition:transform .4s}
.faq-panel .answer{padding:0 22px 20px;color:var(--text-light);font-size:.9rem;line-height:1.9;display:none}
.faq-panel li.open .faq-question span{transform:rotate(45deg)}
.faq-panel li.open .answer{display:block}
/* use cards / testimonial */
.quote-slider{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.quote-card{background:var(--white);border-radius:18px;padding:30px;border:1px solid var(--border);display:flex;flex-direction:column;justify-content:space-between}
.quote-card p{color:var(--text-light);font-size:.97rem;line-height:2;font-weight:400;margin-bottom:18px}
.quote-footer{display:flex;align-items:center;gap:16px}
.quote-avatar{width:48px;height:48px;border-radius:50%;display:flex;align-items:center;justify-content:center;background:var(--primary-light);color:var(--primary);font-weight:800;font-size:1.2rem;flex-shrink:0}
.quote-avatar.o2{background:#d1fae5;color:#059669}
.quote-avatar.o3{background:#fef3c7;color:#d97706}
.quote-footer h4{font-size:1rem;font-weight:800;color:var(--text)}
.quote-footer span{font-size:.77rem;color:var(--text-weak);display:block;line-height:1.4}
@media(max-width:840px){
  .quote-slider{grid-template-columns:1fr}
}
/* cta */
.cta-block{position:relative;border-radius:28px;background:linear-gradient(135deg,#0b1220,#1a2540);padding:80px 52px;text-align:center;overflow:hidden;border:1px solid rgba(255,255,255,.08)}
.cta-block::before{content:"";position:absolute;top:-260px;left:50%;transform:translateX(-50%);width:700px;height:500px;background:radial-gradient(ellipse,rgba(37,99,235,.35),transparent 70%)}
.cta-block .brand-logo{width:82px;height:82px;border-radius:28px;background:linear-gradient(135deg,#2563eb,#f59e0b);display:flex;align-items:center;justify-content:center;font-size:2rem;margin:0 auto 16px;box-shadow:0 20px 40px rgba(37,99,235,.4)}
.cta-line{font-size:.8rem;color:#93c5fd;margin-bottom:12px;font-weight:700;letter-spacing:2px;text-transform:uppercase}
.cta-block h2{font-size:2.2rem;margin-bottom:16px;color:#fff;line-height:1.3}
.cta-block p{max-width:600px;margin:0 auto 24px;color:rgba(255,255,255,.75)}
.cta-actions{display:flex;gap:16px;justify-content:center;align-items:center;flex-wrap:wrap}
@media(max-width:640px){
  .cta-block{padding:50px 28px}
  .cta-block h2{font-size:1.7rem}
  .cta-block p{font-size:.9rem}
}
/* footer */
.site-footer{background:var(--dark-2);color:rgba(255,255,255,.82);position:relative}
.footer-top{padding:64px 0 40px;display:grid;grid-template-columns:1.4fr;gap:48px}
.footer-brand{max-width:380px}
.footer-brand p{font-size:.9rem;line-height:1.8;color:rgba(255,255,255,.55);margin:18px 0 22px}
.footer-socials{display:flex;gap:10px}
.fs-btn{width:38px;height:38px;border-radius:10px;background:rgba(255,255,255,.1);display:flex;align-items:center;justify-content:center;color:#e2e8f0;font-size:.9rem;transition:all .35s}
.fs-btn:hover{background:var(--primary);color:#fff;transform:translateY(-2px)}
.social-grid-links{display:flex;gap:60px;justify-content:flex-end}
.footer-links h5{font-size:.86rem;font-weight:800;text-transform:uppercase;letter-spacing:1.2px;color:#fff;margin-bottom:22px}
.footer-links li{margin-bottom:10px}
.footer-links li a{font-size:.86rem;color:rgba(255,255,255,.62);transition:all .3s;border-bottom:1px solid transparent}
.footer-links li a:hover{color:#fff;border-bottom-color:#fff}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:14px;width:100%;padding:20px 0;border-top:1px solid rgba(255,255,255,.1)}
.footer-bottom p{color:rgba(255,255,255,.4);font-size:.78rem;margin:0;display:flex;align-items:center;gap:14px}
@media(max-width:900px){
  .social-grid-links{flex-wrap:wrap;gap:28px;justify-content:space-between;margin-top:14px}
  .footer-brand{max-width:100%}
  .footer-top{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width: 640px){
  .footer-top{grid-template-columns:1fr}
  .footer-h {display:block}
}
/* misc */
.is-mobile-menu-backdrop{display:none;position:fixed;inset:0;background:rgba(0,0,0,.4);z-index:1000}
.is-mobile-menu-backdrop.show{display:block}
@media(min-width:1025px){.is-mobile-menu-backdrop.show{display:none}}
.text-link, .external-rel{color:var(--primary)}
.grayscale{filter:grayscale(1)}
.sticky-panel{display:none}
@media(max-width:520px){
  .hero-actions .btn{padding:12px 20px;font-size:.9rem;width:100%}
  .hero-actions{width:100%}
}

/* roulang page: category2 */
:root {
            --primary: #2563eb;
            --primary-dark: #1e40af;
            --primary-light: #eff6ff;
            --accent: #0ea5e9;
            --dark: #0f172a;
            --gray-50: #f8fafc;
            --gray-100: #f1f5f9;
            --gray-200: #e2e8f0;
            --gray-300: #cbd5e1;
            --text-main: #1e293b;
            --text-weak: #64748b;
            --text-footer: #94a3b8;
            --border-light: rgba(226, 232, 240, 0.7);
            --shadow-sm: 0 1px 2px 0 rgba(15, 23, 42, .06);
            --shadow-md: 0 4px 12px rgba(15, 23, 42, .08);
            --shadow-lg: 0 20px 30px -10px rgba(15, 23, 42, .15);
            --radius: 16px;
            --radius-sm: 10px;
            --maxw: 1200px;
            --header-h: 72px;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            margin: 0;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            color: var(--text-main);
            background: #ffffff;
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: inline-block;
            vertical-align: middle;
        }
        a {
            text-decoration: none;
            color: inherit;
        }
        p {
            margin-top: 0;
            margin-bottom: 1rem;
        }
        h1,
        h2,
        h3,
        h4 {
            line-height: 1.3;
            margin-top: 0;
            color: #0f172a;
            font-weight: 700;
        }
        .container {
            max-width: var(--maxw);
            margin-left: auto;
            margin-right: auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(255, 255, 255, .9);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-light);
        }
        .header-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: var(--header-h);
            gap: 16px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.06rem;
            font-weight: 800;
            color: var(--dark);
            letter-spacing: -0.2px;
            white-space: nowrap;
        }
        .logo-icon {
            flex: 0 0 auto;
            width: 38px;
            height: 38px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            border-radius: 10px;
            color: #fff;
            font-size: 1.1rem;
            box-shadow: 0 6px 12px -6px rgba(37, 99, 235, .4);
        }
        .logo-sub {
            display: block;
            font-size: .6rem;
            font-weight: 400;
            color: var(--text-weak);
            letter-spacing: .4px;
            margin-top: 2px;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-item {
            font-size: .92rem;
            font-weight: 500;
            color: var(--text-main);
            padding: 8px 13px;
            border-radius: 999px;
            transition: all .2s ease;
            display: flex;
            align-items: center;
            gap: 5px;
            line-height: 1.4;
        }
        .nav-item i.fa-angle-down {
            color: var(--text-weak);
            font-size: .7rem;
            transition: transform .2s;
        }
        .nav-item:hover {
            background: var(--gray-100);
            color: var(--primary);
        }
        .nav-item.active {
            background: var(--primary-light);
            color: var(--primary);
            font-weight: 600;
        }
        .nav-item.active i.fa-angle-down {
            color: var(--primary);
        }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--dark);
            color: #fff;
            font-size: .9rem;
            font-weight: 600;
            border-radius: 999px;
            padding: 9px 20px;
            cursor: pointer;
            transition: background .2s, transform .2s;
            white-space: nowrap;
            border: 0;
            box-shadow: var(--shadow-sm);
            margin-left: 10px;
        }
        .nav-cta:hover {
            background: #1e293b;
            transform: translateY(-1px);
        }
        .nav-toggle {
            display: none;
            background: transparent;
            border: 0;
            font-size: 1.4rem;
            color: var(--dark);
            cursor: pointer;
            padding: 6px 8px;
            border-radius: 8px;
            line-height: 1;
        }
        .nav-toggle:hover {
            background: var(--gray-100);
        }
        .hero-banner {
            position: relative;
            background: linear-gradient(120deg, #0f172a 0%, #1e3a8a 60%, #2563eb 100%);
            color: #fff;
            padding: 100px 0 88px;
            margin-bottom: 0;
            overflow: hidden;
        }
        .hero-banner::after {
            content: "";
            position: absolute;
            right: -120px;
            top: -80px;
            width: 420px;
            height: 420px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(255, 255, 255, .14) 0%, transparent 70%);
        }
        .hero-banner::before {
            content: "";
            position: absolute;
            left: 5%;
            top: 30%;
            width: 260px;
            height: 260px;
            background: radial-gradient(circle, rgba(255, 255, 255, .07) 0%, transparent 70%);
        }
        .hero-inner {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .hero-subtitle {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, .12);
            padding: 6px 14px;
            border-radius: 999px;
            font-size: .82rem;
            letter-spacing: .3px;
            backdrop-filter: blur(6px);
            margin-bottom: 18px;
        }
        .hero-subtitle i {
            color: #7dd3fc;
        }
        .hero-inner h1 {
            color: #fff;
            font-size: 2.7rem;
            line-height: 1.2;
            font-weight: 800;
            margin-bottom: 16px;
            letter-spacing: -1px;
        }
        .hero-desc {
            color: rgba(255, 255, 255, .85);
            font-size: 1.05rem;
            max-width: 540px;
            margin-bottom: 32px;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            align-items: center;
        }
        .btn-main {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: #ffffff;
            color: #0f172a;
            font-weight: 700;
            font-size: .98rem;
            padding: 14px 28px;
            border-radius: 999px;
            border: 0;
            cursor: pointer;
            box-shadow: 0 8px 20px rgba(0, 0, 0, .15);
            transition: all .2s;
        }
        .btn-main i {
            color: var(--primary);
        }
        .btn-main:hover {
            transform: translateY(-2px);
            box-shadow: 0 16px 32px rgba(0, 0, 0, .2);
            background: #f1f5f9;
        }
        .btn-line {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: transparent;
            color: #fff;
            border: 1px solid rgba(255, 255, 255, .5);
            border-radius: 999px;
            padding: 13px 26px;
            font-weight: 600;
            font-size: .95rem;
            cursor: pointer;
            transition: all .2s;
        }
        .btn-line:hover {
            background: rgba(255, 255, 255, .12);
        }
        .hero-stats {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            background: rgba(255, 255, 255, .1);
            border: 1px solid rgba(255, 255, 255, .2);
            backdrop-filter: blur(10px);
            border-radius: 20px;
            padding: 20px 12px;
            margin-top: 40px;
            max-width: 500px;
        }
        .stat-card {
            text-align: center;
            position: relative;
        }
        .stat-card+.stat-card:before {
            content: "";
            position: absolute;
            left: 0;
            top: 15%;
            height: 70%;
            width: 1px;
            background: rgba(255, 255, 255, .2);
        }
        .stat-num {
            font-size: 1.4rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
        }
        .stat-label {
            font-size: .8rem;
            color: rgba(255, 255, 255, .75);
            margin-top: 4px;
        }
        .hero-visual {
            background: rgba(255, 255, 255, .08);
            border: 1px solid rgba(255, 255, 255, .2);
            border-radius: 28px;
            padding: 18px;
            backdrop-filter: blur(14px);
            min-height: 400px;
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .phone-mock {
            background: rgba(255, 255, 255, .95);
            border-radius: 24px;
            padding: 10px 10px 18px;
            max-width: 240px;
            width: 100%;
            box-shadow: 0 20px 40px rgba(0, 0, 0, .3);
            color: #0f172a;
        }
        .mock-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 8px 4px 10px;
            color: #334155;
            font-size: .8rem;
            border-bottom: 1px solid #e2e8f0;
            margin-bottom: 14px;
        }
        .mock-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: #22c55e;
            display: inline-block;
        }
        .mock-card {
            background: #eff6ff;
            border-radius: 14px;
            padding: 14px;
            margin-bottom: 10px;
        }
        .mock-line {
            background: #e0e7ff;
            height: 12px;
            border-radius: 6px;
            margin-bottom: 8px;
        }
        .mock-line.short {
            width: 70%;
        }
        .mock-chip {
            display: inline-block;
            background: var(--primary);
            color: #fff;
            border-radius: 999px;
            font-size: .7rem;
            padding: 4px 10px;
        }
        .section {
            padding-top: 80px;
            padding-bottom: 80px;
        }
        .section.bg-light {
            background: var(--gray-50);
        }
        .section-head {
            max-width: 700px;
            margin-bottom: 44px;
        }
        .section-head.center {
            margin-left: auto;
            margin-right: auto;
            text-align: center;
        }
        .section-tag {
            display: inline-block;
            font-size: .78rem;
            font-weight: 700;
            letter-spacing: 1px;
            text-transform: uppercase;
            color: var(--primary);
            background: var(--primary-light);
            padding: 5px 14px;
            border-radius: 999px;
            margin-bottom: 14px;
        }
        .section-title {
            font-size: 2rem;
            line-height: 1.3;
            margin-bottom: 14px;
            font-weight: 800;
        }
        .section-desc {
            font-size: 1rem;
            color: var(--text-weak);
        }
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .feature-card {
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius);
            padding: 32px 22px 22px;
            transition: all .25s;
            box-shadow: var(--shadow-sm);
            position: relative;
            overflow: hidden;
            min-height: 240px;
        }
        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: #bae6fd;
        }
        .feature-icon {
            width: 50px;
            height: 50px;
            background: var(--primary-light);
            border-radius: 14px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1.35rem;
            color: var(--primary);
            margin-bottom: 20px;
        }
        .feature-card h3 {
            font-size: 1.15rem;
            margin-bottom: 8px;
        }
        .feature-card p {
            color: var(--text-weak);
            font-size: .92rem;
            margin-bottom: 0;
        }
        .split-section {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }
        .split-image {
            border-radius: 24px;
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            position: relative;
            height: 100%;
            min-height: 330px;
            background-size: cover;
            background-position: center;
        }
        .split-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            position: absolute;
            inset: 0;
        }
        .check-list {
            list-style: none;
            padding: 0;
            margin: 24px 0 0;
        }
        .check-list li {
            position: relative;
            padding-left: 34px;
            margin-bottom: 16px;
            font-size: .96rem;
        }
        .check-list li i {
            position: absolute;
            left: 0;
            top: 2px;
            width: 24px;
            height: 24px;
            background: var(--primary-light);
            border-radius: 50%;
            color: var(--primary);
            font-size: .7rem;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .steps-wrap {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            counter-reset: step;
        }
        .step-card {
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius);
            padding: 28px 20px 22px;
            position: relative;
            transition: all .2s;
        }
        .step-card:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-md);
        }
        .step-card .step-num {
            font-size: .8rem;
            font-weight: 800;
            color: var(--primary);
            background: var(--primary-light);
            display: inline-block;
            border-radius: 999px;
            padding: 3px 12px;
            margin-bottom: 18px;
            letter-spacing: .5px;
        }
        .step-card h3 {
            font-size: 1.05rem;
            margin-bottom: 10px;
        }
        .step-card p {
            color: var(--text-weak);
            font-size: .9rem;
            margin-bottom: 0;
        }
        .cover-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }
        .cover-card {
            border-radius: 20px;
            overflow: hidden;
            background: #0f172a;
            box-shadow: var(--shadow-md);
            min-height: 260px;
            display: flex;
            align-items: center;
            position: relative;
            transition: transform .2s;
        }
        .cover-card:hover {
            transform: scale(1.01);
        }
        .cover-card img {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            opacity: .5;
        }
        .cover-card-content {
            position: relative;
            z-index: 2;
            color: #fff;
            padding: 32px;
        }
        .cover-card-content h3 {
            color: #fff;
            font-size: 1.4rem;
        }
        .cover-card-content p {
            color: rgba(255, 255, 255, .85);
            font-size: .92rem;
            max-width: 400px;
        }
        .btn-more {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            margin-top: 12px;
            color: #fff;
            font-size: .9rem;
            font-weight: 600;
            border: 1px solid rgba(255, 255, 255, .5);
            border-radius: 999px;
            padding: 9px 18px;
            transition: all .2s;
        }
        .btn-more:hover {
            background: rgba(255, 255, 255, .2);
        }
        .faq-wrap {
            max-width: 880px;
            margin: 0 auto;
        }
        .faq-item {
            border: 1px solid var(--border-light);
            border-radius: 14px;
            background: #fff;
            overflow: hidden;
            margin-bottom: 14px;
            transition: box-shadow .2s;
        }
        .faq-item:hover {
            box-shadow: var(--shadow-sm);
        }
        .faq-q {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 24px;
            font-weight: 600;
            cursor: pointer;
            font-size: 1rem;
        }
        .faq-q i {
            color: var(--text-weak);
            transition: transform .3s;
            font-size: .8rem;
        }
        .faq-item.open .faq-q i {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-a {
            display: none;
            padding: 0 24px 20px;
            color: var(--text-weak);
            font-size: .94rem;
            line-height: 1.8;
            border-top: 1px dashed var(--gray-200);
            padding-top: 16px;
            margin-top: 2px;
        }
        .faq-item.open .faq-a {
            display: block;
        }
        .tech-band {
            background: linear-gradient(100deg, #0f172a, #1e3a8a);
            border-radius: 28px;
            padding: 48px 50px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 32px;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .tech-band::after {
            content: "";
            position: absolute;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(255, 255, 255, .1) 0%, transparent 70%);
            border-radius: 50%;
            right: -50px;
            top: -80px;
        }
        .tech-band h2 {
            color: #fff;
            font-size: 1.7rem;
            margin-bottom: 8px;
        }
        .tech-band p {
            color: rgba(255, 255, 255, .75);
            margin-bottom: 0;
            max-width: 600px;
        }
        .tech-env {
            display: flex;
            gap: 20px;
            align-items: center;
            flex-wrap: wrap;
        }
        .env-box {
            background: rgba(255, 255, 255, .08);
            border: 1px solid rgba(255, 255, 255, .2);
            border-radius: 16px;
            padding: 16px 22px;
            text-align: center;
            min-width: 100px;
        }
        .env-box i {
            font-size: 1.4rem;
            display: block;
            margin-bottom: 8px;
        }
        .env-box span {
            font-size: .82rem;
        }
        .cta-section {
            background: var(--gray-50);
            padding: 90px 0;
        }
        .cta-box {
            background: #fff;
            border-radius: 32px;
            border: 1px solid var(--border-light);
            text-align: center;
            padding: 60px 40px;
            box-shadow: var(--shadow-lg);
            position: relative;
            overflow: hidden;
        }
        .cta-box h2 {
            font-size: 2rem;
            margin-bottom: 12px;
        }
        .cta-box p {
            font-size: 1.05rem;
            color: var(--text-weak);
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
            margin-bottom: 30px;
        }
        .site-footer {
            background: #0b1120;
            color: var(--text-footer);
            padding: 64px 0 36px;
        }
        .footer-top {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
            margin-bottom: 42px;
        }
        .footer-brand .logo-desktop {
            margin-bottom: 14px;
        }
        .footer-brand p {
            font-size: .92rem;
            max-width: 720px;
            color: var(--text-footer);
        }
        .footer-socials {
            display: flex;
            gap: 10px;
            margin-top: 18px;
        }
        .fs-btn {
            width: 36px;
            height: 36px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: rgba(255, 255, 255, .08);
            border-radius: 10px;
            color: rgba(255, 255, 255, .8);
            transition: all .2s;
        }
        .fs-btn:hover {
            background: rgba(255, 255, 255, .2);
            color: #fff;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .08);
            padding-top: 28px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 12px;
            font-size: .85rem;
        }
        .footer-bottom p {
            margin-bottom: 0;
        }
        .footer-bottom-links {
            display: flex;
            align-items: center;
        }
        .mobile-menu {
            display: none;
        }
        @media (max-width: 1024px) {
            .hero-inner {
                grid-template-columns: 1fr;
                gap: 36px;
            }
            .hero-banner {
                padding: 66px 0 56px;
            }
            .feature-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-wrap {
                grid-template-columns: repeat(2, 1fr);
            }
            .cover-grid {
                grid-template-columns: 1fr;
            }
            .nav-item {
                padding: 8px 10px;
                font-size: .86rem;
            }
            .nav-cta {
                display: none;
            }
        }
        @media (max-width: 840px) {
            .site-header {
                position: sticky;
                top: 0;
                left: 0;
                right: 0;
            }
            .header-row {
                height: var(--header-h);
            }
            .desktop-nav-area {
                display: none;
            }
            .nav-toggle {
                display: block;
            }
            .main-nav {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 72px;
                left: 0;
                right: 0;
                background: #fff;
                border-bottom: 1px solid var(--border-light);
                padding: 14px 24px 20px;
                box-shadow: var(--shadow-md);
                gap: 4px;
                z-index: 60;
                border-radius: 0 0 16px 16px;
            }
            .main-nav.mobile-open {
                display: flex;
            }
            .nav-item {
                width: 100%;
                padding: 12px 14px;
                font-size: .95rem;
                border-radius: 10px;
            }
            .nav-cta {
                margin: 10px 0 0;
                width: 100%;
                justify-content: center;
                display: inline-flex;
            }
            .nav-toggle {
                order: 3;
            }
            .header-row .logo {
                order: 1;
            }
            .split-section {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .split-image {
                min-height: 240px;
            }
            .faq-q {
                font-size: .94rem;
                padding: 16px 18px;
            }
            .tech-band {
                padding: 34px 26px;
            }
            .section {
                padding: 56px 0;
            }
            .hero-inner h1 {
                font-size: 2rem;
            }
            .cta-box {
                padding: 34px 24px;
            }
            .hero-stats {
                max-width: 100%;
            }
        }
        @media (max-width: 600px) {
            .container {
                padding-left: 18px;
                padding-right: 18px;
            }
            .header-row {
                gap: 8px;
            }
            .logo-text {
                font-size: .88rem;
            }
            .logo-icon {
                width: 34px;
                height: 34px;
            }
            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .btn-main,
            .btn-line {
                justify-content: center;
                padding: 13px 20px;
            }
            .feature-grid {
                grid-template-columns: 1fr;
            }
            .steps-wrap {
                grid-template-columns: 1fr;
            }
            .cover-card {
                min-height: 230px;
            }
            .cover-card-content {
                padding: 24px;
            }
            .tech-env {
                flex-direction: column;
                width: 100%;
            }
            .env-box {
                width: 100%;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .footer-bottom {
                flex-direction: column;
            }
            .hero-banner {
                padding: 48px 0 40px;
            }
            .stat-num {
                font-size: 1.1rem;
            }
        }

/* roulang page: article */
:root{
  --bg:#f2f6fc;
  --surface:#ffffff;
  --ink:#0c1830;
  --muted:#5b6f89;
  --line:rgba(20, 63, 128, .10);
  --primary:#2563eb;
  --primary-dark:#17459e;
  --cyan:#22d3ee;
  --green:#12b76a;
  --amber:#f59e0b;
  --radius-xl:28px;
  --radius-lg:22px;
  --radius-md:14px;
  --radius-sm:10px;
  --shadow-sm:0 8px 18px rgba(10,32,71,.06);
  --shadow-md:0 18px 40px rgba(10,32,71,.08);
  --shadow-lg:0 32px 70px rgba(10,32,71,.16);
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"Inter","HarmonyOS Sans SC","PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  background:var(--bg);
  color:var(--ink);
  line-height:1.75;
  font-size:16px;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--primary);text-decoration:none}
a:hover{color:var(--primary-dark)}
ul,ol{margin:0;padding:0}
button,input,textarea{font:inherit}
::selection{background:rgba(37,99,235,.18);color:#093a8c}

.container{max-width:1200px;margin:0 auto;padding:0 28px;width:100%}
.section{padding:74px 0}
.section-alt{background:linear-gradient(180deg,#f3f8ff,#eaf1fb);padding:74px 0}

.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:22px;margin-bottom:34px}
.section-head .kicker{display:inline-flex;align-items:center;gap:8px;color:var(--primary);font-weight:700;letter-spacing:.08em;font-size:.85rem;text-transform:none;margin-bottom:6px}
.kicker i{color:var(--cyan)}
.section-head h2{font-size:clamp(1.5rem,3vw,2.2rem);line-height:1.3;margin:0;letter-spacing:-.02em}
.section-head p{color:var(--muted);margin:8px 0 0;max-width:640px}
.section-link{color:var(--primary);font-weight:700;white-space:nowrap}
.section-link i{font-size:.8rem}

/* ========== Header ========== */
.site-header{
  position:sticky;
  top:0;
  z-index:998;
  background:rgba(7,17,35,.9);
  backdrop-filter:blur(20px);
  -webkit-backdrop-filter:blur(20px);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  min-height:70px;
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
  color:#fff;
}
.logo-icon{
  width:38px;
  height:38px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:11px;
  background:linear-gradient(135deg,#2f7bff,var(--cyan));
  color:#fff;
  font-size:1rem;
  box-shadow:0 8px 22px rgba(37,126,255,.35);
}
.logo-text{
  font-size:1.06rem;
  font-weight:800;
  letter-spacing:.01em;
  white-space:nowrap;
}
.main-nav{
  display:flex;
  align-items:center;
  gap:4px;
  margin-left:auto;
}
.nav-item{
  position:relative;
  color:#dbe8f8;
  padding:10px 13px;
  border-radius:12px;
  font-weight:600;
  font-size:.93rem;
  transition:all .22s ease;
  display:inline-flex;
  align-items:center;
  gap:4px;
}
.nav-item i{transition:transform .2s}
.nav-item.has-mega:hover i{transform:rotate(180deg)}
.nav-item:hover,.nav-item:focus-visible{
  background:rgba(255,255,255,.08);
  color:#fff;
  outline:none;
}
.nav-item.active{
  background:linear-gradient(135deg,rgba(47,123,255,.28),rgba(34,211,238,.2));
  color:#fff;
  box-shadow:inset 0 0 0 1px rgba(120,190,255,.26);
}
.nav-cta{
  margin-left:10px;
  background:linear-gradient(135deg,#2f7bff,#0fb3e8);
  color:#fff;
  padding:9px 15px;
  border-radius:12px;
  font-size:.9rem;
  font-weight:700;
  cursor:pointer;
  white-space:nowrap;
  box-shadow:0 10px 24px rgba(38,99,255,.28);
  transition:transform .2s,box-shadow .2s;
}
.nav-cta:hover{transform:translateY(-2px);box-shadow:0 14px 26px rgba(38,99,255,.36)}
.nav-toggle{
  display:none;
  background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.14);
  color:#fff;
  border-radius:10px;
  font-size:1.1rem;
  width:42px;
  height:42px;
  cursor:pointer;
}
.nav-toggle:focus-visible{outline:2px solid var(--cyan);outline-offset:2px}

/* hero */
.article-hero{
  position:relative;
  padding:78px 0 76px;
  color:#fff;
  overflow:hidden;
  background:
    radial-gradient(circle at 80% 20%,rgba(34,211,238,.16),transparent 28%),
    radial-gradient(circle at 10% 0%,rgba(47,123,255,.26),transparent 36%),
    linear-gradient(115deg,#071126 0%,#0d2a53 60%,#10346b 100%),
    url('/assets/images/backpic/back-2.png') center/cover no-repeat;
}
.article-hero::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(90deg,rgba(4,12,26,.72),rgba(2,12,28,.32) 50%,rgba(203,219,255,.08));
  z-index:1;
}
.hero-grid{position:relative;z-index:2}
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  align-items:center;
  font-size:.88rem;
  color:rgba(255,255,255,.62);
  margin:0 0 18px;
  padding:0;
  list-style:none;
}
.breadcrumb li{display:flex;gap:8px;align-items:center}
.breadcrumb a{color:rgba(255,255,255,.82)}
.breadcrumb a:hover{color:#fff}
.hero-kicker{
  display:inline-flex;
  gap:8px;
  align-items:center;
  background:rgba(255,255,255,.1);
  border:1px solid rgba(255,255,255,.18);
  padding:7px 15px;
  border-radius:99px;
  font-size:.92rem;
  color:#d7edff;
  margin-bottom:18px;
}
.hero-kicker i{color:var(--cyan)}
.article-hero h1{
  font-size:clamp(1.8rem,5vw,3rem);
  line-height:1.3;
  margin:0 0 16px;
  letter-spacing:-.02em;
  font-weight:800;
  max-width:900px;
  text-wrap:balance;
}
.article-hero .hero-desc{
  color:#c7d9ef;
  font-size:1.04rem;
  max-width:740px;
  margin:0 0 20px;
}
.hero-meta{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  color:rgba(255,255,255,.72);
  font-size:.88rem;
}
.meta-chip{
  background:rgba(255,255,255,.1);
  border-radius:10px;
  padding:5px 12px;
  display:inline-flex;
  align-items:center;
  gap:6px;
}
.meta-chip i{color:var(--cyan)}
.meta-chip strong{color:#fff;font-weight:600}

/* Layout */
.article-section{padding:66px 0 78px}
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 360px;
  gap:38px;
  align-items:start;
}
.article-panel{
  background:var(--surface);
  border:1px solid var(--line);
  box-shadow:var(--shadow-md);
  border-radius:var(--radius-lg);
  padding:clamp(22px,3vw,48px);
  overflow:hidden;
}
.article-notice{
  display:flex;
  gap:12px;
  padding:14px 16px;
  background:linear-gradient(180deg,#f0f6ff,#f4faff);
  border:1px solid #cfe3ff;
  border-radius:16px;
  color:#294e7c;
  font-size:.95rem;
  margin-bottom:28px;
}
.article-notice i{color:var(--primary);font-size:1.1rem;margin-top:2px}

.article-body{color:#1b2c48;font-size:1.01rem;line-height:1.95}
.article-body h1,.article-body h2,.article-body h3,.article-body h4{
  color:var(--ink);
  margin:1.6em 0 .6em;
  line-height:1.45;
  letter-spacing:-.02em;
}
.article-body h2{font-size:1.65rem}
.article-body h3{font-size:1.3rem}
.article-body p{margin:0 0 1.2em}
.article-body ul,.article-body ol{margin:0 0 1.4em;padding-left:1.4rem}
.article-body li{margin-bottom:.5em}
.article-body a{font-weight:600;text-decoration:underline;text-underline-offset:3px}
.article-body blockquote{
  border-left:4px solid var(--primary);
  background:#f0f6ff;
  margin:1.4em 0;
  padding:1em 1.4em;
  border-radius:0 16px 16px 0;
  color:#33517c;
}
.article-body img{border-radius:18px;box-shadow:var(--shadow-md);margin:1.4em auto}
.article-body table{
  width:100%;
  border-collapse:collapse;
  margin:1.5em 0;
  font-size:.94rem;
  background:#fff;
  border-radius:12px;
  overflow:hidden;
}
.article-body th{
  background:#19375f;
  color:#fff;
  text-align:left;
  font-weight:600;
  padding:11px 14px;
}
.article-body td{
  border:1px solid #e3edfa;
  padding:11px 14px;
}
.article-body pre{
  background:#0a1424;
  color:#d8e9ff;
  padding:1.2rem;
  border-radius:16px;
  overflow-x:auto;
  font-family:ui-monospace,SFMono-Regular,Consolas,monospace;
}

.article-toolbar{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:36px;
  padding-top:24px;
  border-top:1px solid var(--line);
  align-items:center;
}
.toolbar-tag{
  display:inline-flex;
  align-items:center;
  gap:7px;
  padding:7px 13px;
  background:#eef5ff;
  border-radius:99px;
  color:#1359a8;
  font-size:.85rem;
  font-weight:600;
}
.toolbar-share{
  margin-left:auto;
  display:inline-flex;
  gap:8px;
}
.toolbar-share a{
  width:36px;
  height:36px;
  border-radius:10px;
  background:#f2f6fb;
  color:#33517c;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border:1px solid var(--line);
  transition:.2s;
}
.toolbar-share a:hover{background:var(--primary);color:#fff;transform:translateY(-2px)}

/* sidebar */
.article-sidebar{
  display:flex;
  flex-direction:column;
  gap:22px;
  position:sticky;
  top:96px;
}
.side-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:20px;
  padding:10px;
  overflow:hidden;
  box-shadow:var(--shadow-sm);
}
.side-card .side-inner{padding:16px 18px}
.side-card .side-cover{max-height:180px;overflow:hidden;position:relative;border-radius:14px}
.side-card .side-cover img{width:100%;height:160px;object-fit:cover}
.side-cover .side-pin{
  position:absolute;
  left:12px;
  top:10px;
  background:rgba(6,20,43,.72);
  color:#fff;
  border-radius:99px;
  padding:3px 10px;
  font-size:.76rem;
  backdrop-filter:blur(6px);
}
.side-card h3,.side-card h4{margin:0 0 12px}
.side-card h3{font-size:1.05rem}
.side-ic{
  width:42px;height:42px;
  border-radius:13px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  background:linear-gradient(135deg,#e5efff,#f0f8ff);
  color:var(--primary);
  font-size:1.15rem;
  margin-bottom:12px;
}
.side-list{list-style:none;display:grid;gap:11px}
.side-list li{display:flex;gap:9px;color:#385173;font-size:.89rem;line-height:1.55}
.side-list li i{color:var(--green);margin-top:4px;font-size:.82rem}
.side-divider{height:1px;background:var(--line);margin:12px 0}

.step-list{counter-reset:step;list-style:none;display:grid;gap:14px}
.step-list li{
  counter-increment:step;
  position:relative;
  display:flex;
  gap:12px;
  color:#2f425f;
  font-size:.91rem;
}
.step-list li::before{
  content:counter(step,decimal-leading-zero);
  background:#e9f1ff;
  color:var(--primary);
  font-weight:700;
  min-width:34px;
  height:30px;
  border-radius:8px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-size:.8rem;
  margin-top:2px;
}
.widget-card{
  background:
    linear-gradient(115deg, rgba(7,17,40,.92), rgba(16,47,93,.84)),
    url('/assets/images/coverpic/cover-5.webp') center/cover no-repeat;
  color:#fff;
  border-radius:20px;
  padding:22px 20px;
  border:1px solid rgba(255,255,255,.12);
}
.widget-card h4{margin:0 0 8px;font-size:1.08rem}
.widget-card p{color:rgba(255,255,255,.8);font-size:.86rem;margin:0 0 16px}
.widget-btn{
  display:inline-flex;
  align-items:center;
  gap:6px;
  background:linear-gradient(135deg,#2f7bff,#0fb3e8);
  color:#fff;
  border-radius:12px;
  padding:10px 14px;
  font-weight:700;
  font-size:.9rem;
  transition:.2s;
}
.widget-btn:hover{color:#fff;transform:translateY(-2px);box-shadow:0 10px 26px rgba(47,123,255,.4)}

/* related */
.related-section{background:#fff;border-block:1px solid var(--line)}
.related-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.rel-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:20px;
  overflow:hidden;
  box-shadow:var(--shadow-sm);
  transition:transform .28s ease,box-shadow .28s ease,border-color .28s ease;
}
.rel-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:rgba(37,99,235,.25)}
.rel-thumb{height:162px;overflow:hidden;position:relative}
.rel-thumb img{width:100%;height:100%;object-fit:cover}
.rel-thumb .chip{
  position:absolute;
  bottom:10px;
  left:10px;
  background:rgba(6,18,40,.76);
  color:#fff;
  backdrop-filter:blur(8px);
  font-size:.75rem;
  padding:4px 10px;
  border-radius:99px;
}
.rel-card-body{padding:17px 19px 20px}
.rel-card-body h3{margin:0 0 8px;font-size:1.03rem;line-height:1.5}
.rel-card-body h3 a{color:var(--ink)}
.rel-card-body h3 a:hover{color:var(--primary)}
.rel-card-body p{color:var(--muted);font-size:.88rem;margin:0}
.rel-card-foot{
  display:flex;
  justify-content:space-between;
  margin-top:14px;
  font-size:.8rem;
  color:#7c8fa5;
  border-top:1px dashed var(--line);
  padding-top:12px;
}

/* FAQ */
.faq-container{max-width:930px;margin:0 auto}
.faq-item{
  background:#fff;
  border:1px solid var(--line);
  border-radius:18px;
  margin-bottom:14px;
  overflow:hidden;
  transition:box-shadow .2s;
}
.faq-item:hover{box-shadow:var(--shadow-md)}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  padding:20px 24px;
  display:flex;
  gap:14px;
  align-items:flex-start;
  font-weight:700;
  font-size:1.02rem;
  color:var(--ink);
  position:relative;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary .q-badge{
  min-width:28px;
  height:28px;
  border-radius:8px;
  background:linear-gradient(135deg,#e6efff,#f4faff);
  color:var(--primary);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-weight:800;
  font-size:.85rem;
  margin-top:3px;
}
.faq-item summary::after{
  content:"\f078";
  font-family:"Font Awesome 6 Free";
  font-weight:900;
  position:absolute;
  right:22px;
  top:22px;
  color:#6e87a5;
  font-size:.9rem;
  transition:transform .2s;
}
.faq-item[open] summary{color:var(--primary)}
.faq-item[open] summary::after{transform:rotate(180deg)}
.faq-open{color:var(--muted);padding:0 24px 22px 66px;font-size:.95rem}

/* CTA */
.cta-section{padding:66px 0 88px}
.cta-band{
  position:relative;
  overflow:hidden;
  border-radius:32px;
  padding:clamp(32px,6vw,68px);
  color:#fff;
  background:
    radial-gradient(circle at 86% 20%,rgba(34,211,238,.25),transparent 36%),
    linear-gradient(95deg,#07152e 0%,#0a2d60 48%,#104b9e 100%),
    url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
  border:1px solid rgba(255,255,255,.12);
  box-shadow:0 28px 70px rgba(10,31,77,.22);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  flex-wrap:wrap;
}
.cta-band h2{margin:0 0 12px;font-size:clamp(1.4rem,3vw,2rem)}
.cta-band p{margin:0;color:#c8dbef;max-width:600px}
.cta-btns{display:flex;gap:13px;flex-wrap:wrap}
.cta-btn{
  display:inline-flex;
  gap:8px;
  align-items:center;
  padding:13px 22px;
  border-radius:14px;
  color:#fff;
  font-weight:700;
  background:linear-gradient(135deg,#2f7bff,#0fb3e8);
  box-shadow:0 15px 33px rgba(28,112,255,.35);
  transition:.22s;
}
.cta-btn.ghost{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.25)}
.cta-btn:hover{color:#fff;transform:translateY(-3px);box-shadow:0 20px 42px rgba(28,112,255,.4)}
.cta-btn.ghost:hover{background:rgba(255,255,255,.18)}

/* footer */
.site-footer{
  background:#071022;
  color:#c3d1e2;
  border-top:1px solid rgba(255,255,255,.06);
  padding-top:34px;
}
.footer-top{
  display:flex;
  justify-content:space-between;
  gap:30px;
  flex-wrap:wrap;
  padding:16px 0 26px;
  border-bottom:1px solid rgba(255,255,255,.08);
}
.footer-brand{max-width:600px}
.site-footer .logo .logo-text{
  font-size:1.05rem;
  display:inline-flex;
  flex-direction:column;
  line-height:1.35;
}
.footer-brand p{color:#8ba0ba;font-size:.9rem;line-height:1.85;margin:12px 0 0}
.footer-socials{display:flex;gap:10px;margin-top:18px}
.fs-btn{
  width:38px;
  height:38px;
  border-radius:11px;
  background:rgba(255,255,255,.07);
  border:1px solid rgba(255,255,255,.1);
  color:#c8d8eb;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  transition:.2s;
}
.fs-btn:hover{
  background:linear-gradient(135deg,#2f7bff,#0fb3e8);
  color:#fff;
  transform:translateY(-3px);
}
.footer-bottom{
  display:flex;
  align-items:center;
  gap:12px;
  justify-content:space-between;
  padding:20px 0 22px;
  font-size:.85rem;
  color:#8197ae;
  flex-wrap:wrap;
}
.footer-bottom i{color:#54a1ff}
.footer-bottom-links{display:flex;flex-wrap:wrap;gap:6px;align-items:center}

/* empty state */
.empty-state{
  text-align:center;
  padding:64px 20px;
}
.empty-state .empty-icon{
  width:72px;
  height:72px;
  border-radius:25px;
  background:#eaf2ff;
  color:var(--primary);
  font-size:1.8rem;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  margin-bottom:20px;
}
.empty-state h2{font-size:1.7rem;margin:0 0 8px}
.empty-state p{color:var(--muted);margin:0 0 22px}
.btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  background:linear-gradient(135deg,#2f7bff,#0fb3e8);
  color:#fff;
  padding:12px 20px;
  border-radius:12px;
  font-weight:700;
  border:0;
  transition:.22s;
  font-size:.92rem;
}
.btn:hover{transform:translateY(-2px);color:#fff;box-shadow:0 14px 28px rgba(28,112,255,.32)}

/* responsive */
@media (max-width: 1024px){
  .container{padding:0 22px}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:34px}
  .article-sidebar{position:static;display:grid;grid-template-columns:1fr 1fr;align-items:start}
  .widget-card{grid-column:1/-1}
  .related-grid{grid-template-columns:repeat(2,1fr)}
}

@media (max-width: 820px){
  .nav-toggle{display:inline-flex}
  .main-nav{
    position:fixed;
    top:70px;
    left:0;
    right:0;
    background:rgba(7,17,35,.98);
    flex-direction:column;
    align-items:stretch;
    padding:16px 20px 22px;
    margin:0;
    display:none;
    box-shadow:0 30px 60px rgba(0,0,0,.3);
    border-bottom:1px solid rgba(255,255,255,.1);
    gap:2px;
    z-index:998;
  }
  .main-nav.open{display:flex;max-height:calc(100vh - 70px);overflow-y:auto}
  .nav-item{padding:12px 14px;border-radius:10px}
  .nav-cta{margin:8px 0 0;text-align:center}
  .article-sidebar{grid-template-columns:1fr}
  .widget-card{grid-column:auto}
  .section{padding:52px 0}
  .article-section{padding:38px 0 58px}
}

@media (max-width: 560px){
  body{font-size:15px}
  .container{padding:0 16px}
  .header-inner{min-height:66px;gap:10px}
  .logo-text{font-size:.92rem}
  .logo-icon{width:34px;height:34px}
  .article-hero{padding:48px 0 44px}
  .hero-meta{gap:8px}
  .related-grid{grid-template-columns:1fr}
  .section-head{flex-direction:column;align-items:flex-start}
  .cta-band{text-align:left}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .article-panel{padding:20px 16px}
  .article-toolbar .toolbar-share{margin-left:0}
  .faq-item summary{padding:16px 16px 16px 18px}
  .faq-open{padding:0 16px 18px 52px}
}

/* roulang page: category1 */
:root {
  --primary:#1050ff;
  --primary-600:#0b3fd0;
  --accent:#10bae8;
  --dark:#0a172b;
  --dark-2:#11233e;
  --text:#152136;
  --muted:#5b6b84;
  --border:#e7eef8;
  --bg:#f3f7fe;
  --card:#ffffff;
  --radius:24px;
  --radius-sm:16px;
  --shadow:0 12px 36px rgba(15,42,84,.08);
  --shadow-hover:0 24px 52px rgba(8,34,80,.16);
  --success:#19c978;
  --warn:#f7a23b;
  --danger:#f15f6f;
  --grad-primary:linear-gradient(135deg,#1050ff 0%,#10bae8 100%);
}

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

html {
  scroll-behavior:smooth;
  -webkit-text-size-adjust:100%;
}

body {
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  min-width:320px;
}

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

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

ul,ol,li {
  list-style:none;
}

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

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

.grid-container {
  max-width:1200px;
}

.grid-x.grid-margin-x.route-grid,
.grid-x.grid-margin-x.risk-grid {
  row-gap:24px;
}

/* ===== Header / Nav ===== */
.site-header {
  position:-webkit-sticky;
  position:sticky;
  top:0;
  z-index:300;
  background:rgba(255,255,255,.9);
  -webkit-backdrop-filter:blur(18px);
  backdrop-filter:blur(18px);
  border-bottom:1px solid rgba(218,228,242,.85);
}

.header-inner {
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  min-height:76px;
}

.logo {
  display:flex;
  align-items:center;
  gap:12px;
  min-width:0;
}

.logo-icon {
  flex-shrink:0;
  width:46px;
  height:46px;
  display:flex;
  align-items:center;
  justify-content:center;
  border-radius:15px;
  background:var(--grad-primary);
  color:#fff;
  font-size:20px;
  box-shadow:0 10px 24px rgba(16,80,255,.28);
}

.logo-text {
  display:flex;
  flex-direction:column;
  line-height:1.25;
}

.logo-text strong {
  font-size:1.22rem;
  font-weight:900;
  color:var(--dark);
  letter-spacing:.01em;
  white-space:nowrap;
}

.logo-text small {
  font-size:.66rem;
  font-weight:600;
  letter-spacing:.32em;
  color:var(--muted);
  margin-top:3px;
}

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

.nav-item {
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:10px 15px;
  border-radius:999px;
  font-weight:600;
  font-size:.93rem;
  color:#31425d;
  transition:all .22s ease;
  white-space:nowrap;
  border:1px solid transparent;
}

.nav-item i {
  transition:transform .25s ease;
}

.nav-item:hover,
.nav-item:focus-visible {
  color:var(--primary);
  background:#eef5ff;
  outline:none;
}

.nav-item.has-mega:hover i {
  transform:rotate(180deg);
}

.nav-item.active {
  background:var(--grad-primary);
  color:#fff;
  box-shadow:0 10px 24px rgba(16,80,255,.28);
  border-color:transparent;
}

.nav-cta {
  margin-left:10px;
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:11px 20px;
  border-radius:999px;
  background:var(--dark);
  color:#fff;
  border:0;
  cursor:pointer;
  font-weight:600;
  font-size:.93rem;
  white-space:nowrap;
  transition:all .25s ease;
}

.nav-cta:hover {
  background:var(--dark-2);
  transform:translateY(-1px);
  box-shadow:0 12px 24px rgba(10,20,45,.24);
}

.nav-toggle {
  display:none;
  width:44px;
  height:44px;
  border:1px solid var(--border);
  background:#fff;
  border-radius:12px;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:5px;
  cursor:pointer;
  transition:all .2s ease;
}

.nav-toggle:hover {
  border-color:#cbdbf1;
  background:#f5f9ff;
}

.nav-toggle span {
  display:block;
  width:20px;
  height:2px;
  background:var(--text);
  border-radius:4px;
  transition:all .25s ease;
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform:translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity:0;
  transform:translateX(-6px);
}

.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform:translateY(-7px) rotate(-45deg);
}

/* ===== Hero ===== */
.hero {
  position:relative;
  color:#fff;
  background:
    linear-gradient(118deg, rgba(5,14,34,.96) 0%, rgba(8,24,58,.92) 34%, rgba(10,44,110,.78) 100%),
    url("/assets/images/backpic/back-1.webp") center/cover;
  padding:126px 0 112px;
  overflow:hidden;
}

.hero::before {
  content:"";
  position:absolute;
  width:650px;
  height:650px;
  border-radius:50%;
  background:radial-gradient(circle, rgba(20,185,235,.28), transparent 62%);
  top:-260px;
  right:-120px;
  pointer-events:none;
}

.hero::after {
  content:"";
  position:absolute;
  width:360px;
  height:360px;
  border-radius:50%;
  background:radial-gradient(circle, rgba(16,80,255,.24), transparent 66%);
  left:-120px;
  bottom:-140px;
  pointer-events:none;
}

.hero-inner {
  position:relative;
  z-index:2;
  text-align:center;
  max-width:920px;
  margin:0 auto;
}

.hero-badge {
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:.88rem;
  font-weight:600;
  padding:8px 18px;
  border-radius:999px;
  background:rgba(255,255,255,.1);
  border:1px solid rgba(255,255,255,.18);
  -webkit-backdrop-filter:blur(6px);
  backdrop-filter:blur(6px);
  color:rgba(255,255,255,.95);
  margin-bottom:28px;
}

.hero-badge i {
  color:#6de6ff;
}

.hero h1 {
  font-size:clamp(2rem, 5vw, 3.2rem);
  font-weight:900;
  line-height:1.2;
  letter-spacing:-.02em;
  margin-bottom:18px;
  color:#fff;
}

.hero h1 .grad-text {
  display:block;
  margin-top:10px;
  background:linear-gradient(90deg,#ffffff 0%,#a1e4ff 50%,#d3eeff 100%);
  -webkit-background-clip:text;
  background-clip:text;
  -webkit-text-fill-color:transparent;
}

.hero .lead {
  max-width:760px;
  margin:0 auto;
  font-size:1.1rem;
  color:rgba(225,236,255,.86);
  line-height:1.85;
}

.hero-actions {
  display:flex;
  flex-wrap:wrap;
  justify-content:center;
  gap:14px;
  margin-top:38px;
}

.btn {
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  padding:14px 26px;
  border-radius:999px;
  border:1px solid transparent;
  font-size:1rem;
  font-weight:700;
  line-height:1.4;
  cursor:pointer;
  transition:all .25s ease;
  text-align:center;
}

.btn-lg {
  padding:16px 34px;
  font-size:1.08rem;
}

.btn-primary {
  background:var(--grad-primary);
  color:#fff;
  box-shadow:0 16px 34px rgba(16,80,255,.38);
}

.btn-primary:hover {
  transform:translateY(-2px);
  box-shadow:0 22px 42px rgba(16,80,255,.45);
}

.btn-ghost {
  background:rgba(255,255,255,.08);
  border-color:rgba(255,255,255,.24);
  color:#fff;
  -webkit-backdrop-filter:blur(6px);
  backdrop-filter:blur(6px);
}

.btn-ghost:hover {
  transform:translateY(-2px);
  background:rgba(255,255,255,.16);
  border-color:rgba(255,255,255,.45);
}

.hero-metrics {
  display:grid;
  grid-template-columns:repeat(3,minmax(160px,1fr));
  max-width:860px;
  margin:50px auto 0;
  gap:16px;
}

.metric {
  padding:22px 12px;
  background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.14);
  border-radius:20px;
  -webkit-backdrop-filter:blur(6px);
  backdrop-filter:blur(6px);
  text-align:center;
}

.metric strong {
  display:block;
  font-size:1.5rem;
  font-weight:800;
  color:#fff;
  margin-bottom:4px;
}

.metric span {
  font-size:.88rem;
  color:rgba(215,228,255,.8);
}

/* ===== Section base ===== */
.section {
  padding:96px 0;
}

.section-feature {
  background:#fff;
  padding:96px 0;
}

.section-white {
  background:#fff;
}

.section-head {
  max-width:820px;
  margin:0 auto 48px;
  text-align:center;
}

.section-head.left {
  text-align:left;
  margin-left:0;
  margin-bottom:32px;
}

.eyebrow {
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:.82rem;
  font-weight:800;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--primary);
  background:#eaf2ff;
  border:1px solid #d9e7ff;
  padding:7px 15px;
  border-radius:999px;
  margin-bottom:18px;
}

.section-head h2,
.section-head-base h2 {
  font-size:clamp(1.8rem, 3vw, 2.6rem);
  line-height:1.25;
  font-weight:900;
  color:var(--dark);
  letter-spacing:-.02em;
}

.section-head p {
  margin-top:16px;
  font-size:1.05rem;
  color:var(--muted);
}

/* ===== Route check ===== */
.route-card {
  height:100%;
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:32px 26px;
  box-shadow:var(--shadow);
  transition:all .28s ease;
  position:relative;
  overflow:hidden;
}

.route-card::before {
  content:"";
  position:absolute;
  left:0;
  top:0;
  width:5px;
  height:82px;
  background:var(--grad-primary);
  border-radius:0 0 8px 0;
  opacity:0;
  transition:opacity .25s ease;
}

.route-card:hover,
.route-card:focus-within {
  transform:translateY(-6px);
  box-shadow:var(--shadow-hover);
  border-color:#cfdffb;
}

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

.route-head {
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  margin-bottom:24px;
}

.route-icon {
  width:58px;
  height:58px;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:22px;
  color:var(--primary);
  background:linear-gradient(135deg,#eff6ff,#e5faff);
  border-radius:18px;
}

.route-tag {
  font-size:.82rem;
  font-weight:800;
  color:var(--primary);
  background:#eef5ff;
  border:1px solid #dce9ff;
  padding:5px 12px;
  border-radius:999px;
}

.route-card h3 {
  font-size:1.22rem;
  color:var(--dark);
  font-weight:800;
  margin-bottom:12px;
}

.route-card p {
  font-size:.96rem;
  color:var(--muted);
  margin:0;
}

/* ===== Split feature ===== */
.split-grid {
  display:grid;
  grid-template-columns:1.02fr 1fr;
  gap:60px;
  align-items:center;
}

.feature-media {
  position:relative;
}

.feature-media::before {
  content:"";
  position:absolute;
  inset:-24px -24px auto auto;
  width:76%;
  height:76%;
  background:radial-gradient(circle, #cde2ff80 0%, transparent 70%);
  border-radius:40px;
  z-index:0;
}

.media-frame {
  position:relative;
  z-index:1;
  border-radius:28px;
  overflow:hidden;
  box-shadow:var(--shadow-hover);
  border:1px solid rgba(255,255,255,.8);
}

.media-frame img {
  width:100%;
  aspect-ratio:16/12;
  object-fit:cover;
}

.media-note {
  position:absolute;
  z-index:2;
  left:-14px;
  bottom:28px;
  background:rgba(255,255,255,.92);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border:1px solid rgba(255,255,255,.4);
  border-radius:18px;
  padding:14px 18px;
  display:flex;
  align-items:center;
  gap:10px;
  box-shadow:0 18px 40px rgba(10,34,80,.15);
  color:var(--dark);
  font-weight:700;
  font-size:.9rem;
}

.media-note i {
  color:var(--primary);
  font-size:1.2rem;
}

.trust-row {
  display:flex;
  gap:18px;
  padding:22px 22px;
  background:#f7faff;
  border:1px solid var(--border);
  border-radius:20px;
  transition:all .25s ease;
}

.trust-row + .trust-row {
  margin-top:16px;
}

.trust-row:hover {
  transform:translateX(4px);
  background:#fff;
  box-shadow:0 14px 30px rgba(16,80,255,.09);
}

.trust-icon {
  flex-shrink:0;
  width:50px;
  height:50px;
  display:flex;
  align-items:center;
  justify-content:center;
  background:var(--grad-primary);
  color:#fff;
  font-size:18px;
  border-radius:16px;
  box-shadow:0 10px 24px rgba(16,80,255,.3);
}

.trust-row h3 {
  font-size:1.1rem;
  font-weight:800;
  color:var(--dark);
  margin-bottom:4px;
}

.trust-row p {
  color:var(--muted);
  font-size:.94rem;
  margin:0;
}

/* ===== Dark Status band ===== */
.status-band {
  position:relative;
  padding:96px 0 104px;
  color:#fff;
  background:
    linear-gradient(140deg, rgba(6,15,36,.96), rgba(10,23,55,.94), rgba(14,42,92,.9)),
    url("/assets/images/backpic/back-3.webp") center/cover;
  overflow:hidden;
}

.status-band::before {
  content:"";
  position:absolute;
  top:-80px;
  left:10%;
  width:420px;
  height:420px;
  background:radial-gradient(circle, rgba(16,185,235,.22), transparent 68%);
}

.status-band .section-head h2 {
  color:#fff;
}

.status-band .section-head p {
  color:rgba(224,236,255,.82);
}

.eyebrow-light {
  background:rgba(255,255,255,.12);
  color:#9fdcff;
  border-color:rgba(255,255,255,.22);
}

.status-panel {
  position:relative;
  z-index:2;
  max-width:960px;
  margin:0 auto;
  padding:30px;
  display:grid;
  grid-template-columns:repeat(2, 1fr);
  gap:16px;
  background:rgba(255,255,255,.07);
  border:1px solid rgba(255,255,255,.16);
  border-radius:30px;
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
}

.status-item {
  display:flex;
  align-items:center;
  gap:16px;
  padding:18px 20px;
  background:rgba(255,255,255,.07);
  border-radius:20px;
  border:1px solid rgba(255,255,255,.1);
  transition:all .22s ease;
}

.status-item:hover {
  background:rgba(255,255,255,.13);
}

.ping {
  width:11px;
  height:11px;
  background:var(--success);
  border-radius:50%;
  box-shadow:0 0 0 5px rgba(25,201,120,.2);
  flex-shrink:0;
}

.ping-warn {
  background:var(--warn);
  box-shadow:0 0 0 5px rgba(247,162,59,.18);
}

.status-copy strong {
  display:block;
  font-size:1rem;
  color:#fff;
  font-weight:800;
}

.status-copy small {
  color:rgba(220,232,255,.7);
  font-size:.84rem;
}

.status-check {
  margin-left:auto;
  color:#7ef0bd;
  font-size:1.1rem;
}

.status-free {
  grid-column:1 / -1;
  text-align:center;
  font-size:.9rem;
  color:rgba(220,232,255,.78);
  background:rgba(255,255,255,.06);
  padding:16px 22px;
  border-radius:18px;
}

.status-free i {
  margin-right:8px;
  color:#7ef0bd;
}

/* ===== Risk section ===== */
.risk-section {
  background:var(--bg);
}

.risk-card {
  height:100%;
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:30px 26px;
  box-shadow:var(--shadow);
  transition:all .28s ease;
  position:relative;
}

.risk-card:hover {
  transform:translateY(-6px);
  box-shadow:var(--shadow-hover);
}

.risk-label {
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:.79rem;
  font-weight:800;
  padding:5px 12px;
  border-radius:999px;
  border:1px solid transparent;
  margin-bottom:16px;
}

.risk-label.red {
  color:#d9444f;
  background:#fff0f2;
  border-color:#ffd9dd;
}

.risk-label.orange {
  color:#d97204;
  background:#fff6e8;
  border-color:#ffead0;
}

.risk-label.blue {
  color:#1050ff;
  background:#eef4ff;
  border-color:#d9e7ff;
}

.risk-card .risk-icon {
  width:52px;
  height:52px;
  display:flex;
  align-items:center;
  justify-content:center;
  background:linear-gradient(135deg,#eff6ff,#e2f7ff);
  color:var(--primary);
  border-radius:16px;
  font-size:20px;
}

.risk-card h3 {
  font-size:1.25rem;
  color:var(--dark);
  font-weight:800;
  margin:18px 0 8px;
}

.risk-card p {
  color:var(--muted);
  font-size:.96rem;
  margin-bottom:16px;
}

.safety-list {
  margin:0;
}

.safety-list li {
  display:flex;
  gap:8px;
  align-items:flex-start;
  font-size:.9rem;
  color:var(--text);
  padding:6px 0;
}

.safety-list li i {
  color:var(--success);
  margin-top:5px;
}

/* ===== FAQ ===== */
.faq-section {
  background:#fff;
  padding:96px 0;
}

.faq-wrap {
  max-width:880px;
  margin:0 auto;
}

.faq-item {
  background:#fff;
  border:1px solid var(--border);
  border-radius:18px;
  margin-bottom:14px;
  overflow:hidden;
  transition:border-color .25s ease, box-shadow .25s ease;
}

.faq-item[open] {
  border-color:#ccdbff;
  box-shadow:0 14px 32px rgba(16,80,255,.1);
}

.faq-item summary {
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  cursor:pointer;
  padding:20px 26px;
  font-weight:700;
  color:var(--dark);
  font-size:1.08rem;
  list-style:none;
  transition:color .2s ease;
}

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

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

.faq-item summary::after {
  content:"\f078";
  font-family:"Font Awesome 6 Free";
  font-weight:900;
  font-size:.82rem;
  color:var(--primary);
  transition:transform .25s ease;
  flex-shrink:0;
}

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

.faq-body {
  padding:0 26px 24px;
  color:var(--muted);
  font-size:.96rem;
  line-height:1.8;
  border-top:1px dashed var(--border);
  margin:0 26px 0;
  padding-left:0;
  padding-right:0;
}

/* ===== CTA ===== */
.cta-section {
  background:var(--bg);
  padding:96px 0;
}

.cta-panel {
  position:relative;
  background:linear-gradient(135deg,#102a63 0%,#123f83 50%,#1057c5 100%);
  color:#fff;
  overflow:hidden;
  border-radius:36px;
  padding:70px 34px;
  text-align:center;
}

.cta-panel::before {
  content:"";
  position:absolute;
  width:420px;
  height:420px;
  border-radius:50%;
  background:radial-gradient(circle, rgba(20,185,235,.4), transparent 65%);
  top:-180px;
  right:-120px;
}

.cta-panel::after {
  content:"";
  position:absolute;
  width:320px;
  height:320px;
  border-radius:50%;
  background:radial-gradient(circle, rgba(255,255,255,.12), transparent 65%);
  bottom:-130px;
  left:-80px;
}

.cta-inner {
  position:relative;
  z-index:2;
  max-width:700px;
  margin:0 auto;
}

.cta-panel h2 {
  font-size:clamp(1.7rem, 3.5vw, 2.6rem);
  font-weight:900;
  line-height:1.25;
  margin:18px 0 14px;
}

.cta-panel p {
  color:rgba(228,238,255,.88);
  font-size:1.06rem;
  margin-bottom:30px;
}

.cta-lightbtn {
  background:#fff;
  color:var(--primary);
  box-shadow:0 18px 40px rgba(0,20,65,.32);
}

.cta-lightbtn:hover {
  transform:translateY(-3px);
  background:#f2f7ff;
}

/* ===== Footer ===== */
.site-footer {
  background:#091225;
  color:#a9b6d3;
  padding:68px 0 36px;
}

.site-footer .footer-top {
  display:flex;
  justify-content:center;
  text-align:center;
}

.site-footer .footer-brand {
  max-width:760px;
  width:100%;
}

.site-footer .logo {
  justify-content:center;
}

.site-footer .logo-text strong {
  color:#fff;
}

.site-footer .logo-text small {
  color:rgba(255,255,255,.58);
}

.site-footer .footer-brand p {
  max-width:680px;
  margin:22px auto 0;
  font-size:.95rem;
  color:#9aabc7;
}

.footer-socials {
  display:flex;
  justify-content:center;
  gap:10px;
  margin-top:24px;
}

.fs-btn {
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:42px;
  height:42px;
  background:rgba(255,255,255,.07);
  border:1px solid rgba(255,255,255,.12);
  color:#fff;
  border-radius:12px;
  transition:all .22s ease;
}

.fs-btn:hover {
  background:var(--primary);
  color:#fff;
  transform:translateY(-3px);
}

.footer-bottom {
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:center;
  gap:8px 18px;
  border-top:1px solid rgba(255,255,255,.08);
  margin-top:36px;
  padding-top:26px;
  font-size:.9rem;
  color:#7183a5;
}

.footer-bottom p {
  margin:0;
}

.footer-bottom-links i,
.footer-bottom i {
  margin-right:4px;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .section,
  .section-feature,
  .faq-section {
    padding:76px 0;
  }

  .status-band {
    padding:76px 0 84px;
  }

  .hero {
    padding:100px 0 90px;
  }

  .split-grid {
    grid-template-columns:1fr;
    gap:48px;
  }

  .main-nav {
    display:none;
    position:fixed;
    top:76px;
    left:0;
    width:100%;
    max-height:calc(100vh - 76px);
    overflow-y:auto;
    flex-direction:column;
    align-items:stretch;
    gap:8px;
    padding:18px 20px 24px;
    background:rgba(255,255,255,.96);
    -webkit-backdrop-filter:blur(20px);
    backdrop-filter:blur(20px);
    border-bottom:1px solid #dfe9f6;
    box-shadow:0 22px 54px rgba(8,25,55,.18);
  }

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

  .nav-item {
    width:100%;
    justify-content:space-between;
    font-size:1rem;
    padding:13px 16px;
    border-radius:14px;
    white-space:normal;
  }

  .nav-cta {
    display:inline-flex;
    width:100%;
    margin:10px 0 0;
    justify-content:center;
  }

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

@media (max-width: 768px) {
  .header-inner {
    min-height:68px;
  }

  .logo-icon {
    width:42px;
    height:42px;
    font-size:18px;
  }

  .logo-text strong {
    font-size:1.02rem;
  }

  .logo-text small {
    display:none;
  }

  .main-nav {
    top:68px;
    max-height:calc(100vh - 68px);
  }

  .hero {
    padding:86px 0 76px;
  }

  .hero h1 {
    font-size:clamp(1.75rem, 6vw, 2.6rem);
  }

  .hero .lead {
    font-size:1rem;
  }

  .hero-metrics {
    grid-template-columns:1fr;
    max-width:360px;
    gap:12px;
  }

  .metric {
    padding:16px 14px;
  }

  .hero-actions {
    flex-direction:column;
    max-width:320px;
    margin-left:auto;
    margin-right:auto;
  }

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

  .section-head {
    margin-bottom:36px;
  }

  .status-panel {
    grid-template-columns:1fr;
    padding:18px;
  }

  .status-free {
    grid-column:auto;
  }

  .cta-panel {
    padding:52px 22px;
    border-radius:26px;
  }

  .cta-panel p {
    font-size:.98rem;
  }

  .footer-bottom {
    flex-direction:column;
  }

  .footer-socials {
    flex-wrap:wrap;
  }
}

@media (max-width: 520px) {
  .container {
    padding-left:16px;
    padding-right:16px;
  }

  .header-inner {
    gap:10px;
  }

  .logo-icon {
    width:38px;
    height:38px;
    font-size:16px;
  }

  .logo-text strong {
    font-size:.88rem;
  }

  .nav-toggle {
    width:40px;
    height:40px;
  }

  .btn {
    padding:13px 18px;
    font-size:.95rem;
  }

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

  .route-head {
    margin-bottom:18px;
  }

  .route-icon {
    width:50px;
    height:50px;
    font-size:18px;
  }

  .media-frame {
    border-radius:18px;
  }

  .media-note {
    left:10px;
    right:10px;
    bottom:14px;
    padding:10px 14px;
    font-size:.82rem;
  }

  .trust-row {
    padding:18px 16px;
    gap:12px;
  }

  .risk-card {
    padding:24px 20px;
  }

  .faq-item summary {
    padding:16px 18px;
    font-size:1rem;
  }

  .faq-body {
    font-size:.92rem;
  }

  .cta-panel {
    padding:40px 18px;
  }

  .footer-bottom {
    font-size:.82rem;
  }
}