/* roulang page: index */
:root{--p:#0b3b8c;--pl:#1e6ff2;--s:#ff6b4a;--bg:#f7f9fc;--wh:#fff;--tx:#0f172a;--mu:#64748b;--bd:#e2e8f0;--r:16px;--rs:10px;--sh:0 4px 24px rgba(11,59,140,.08);--shl:0 12px 40px rgba(11,59,140,.14);--gap:80px}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:"Inter","PingFang SC","Microsoft YaHei",system-ui,sans-serif;color:var(--tx);background:var(--bg);line-height:1.75;font-size:16px;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}img{max-width:100%;display:block}ul,ol{list-style:none}button,input{font:inherit}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:var(--gap) 0}
.section-head{margin-bottom:48px;text-align:center}
.section-head .eyebrow{display:inline-block;background:rgba(30,111,242,.12);color:var(--pl);font-size:13px;font-weight:700;padding:6px 16px;border-radius:40px;letter-spacing:.5px;margin-bottom:14px}
.section-head h2{font-size:34px;font-weight:800;line-height:1.3;letter-spacing:-.5px}
.section-head p{color:var(--mu);font-size:17px;max-width:680px;margin:14px auto 0}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:700;border-radius:999px;padding:12px 28px;transition:.25s;border:2px solid transparent;font-size:15px;cursor:pointer;line-height:1}
.btn i{font-size:14px}
.btn-primary{background:var(--pl);color:#fff;box-shadow:0 8px 24px rgba(30,111,242,.3)}
.btn-primary:hover{background:var(--p);transform:translateY(-2px);box-shadow:0 12px 32px rgba(11,59,140,.35)}
.btn-outline{border-color:var(--bd);color:var(--tx);background:var(--wh)}
.btn-outline:hover{border-color:var(--pl);color:var(--pl);transform:translateY(-2px)}
.btn-light{background:#fff;color:var(--p);border-color:transparent;box-shadow:0 8px 24px rgba(0,0,0,.12)}
.btn-light:hover{background:#eef4ff;transform:translateY(-2px)}
.btn-sm{padding:9px 20px;font-size:14px}
.badge{display:inline-block;padding:6px 16px;border-radius:40px;font-size:12px;font-weight:700;letter-spacing:.5px}
.badge-blue{background:rgba(30,111,242,.12);color:var(--pl)}
.badge-orange{background:rgba(255,107,74,.14);color:#d94a2c}
.tag{display:inline-block;padding:5px 14px;border-radius:6px;font-size:13px;font-weight:600;background:rgba(30,111,242,.1);color:var(--pl);transition:.2s}
.tag:hover{background:var(--pl);color:#fff}
.section-white{background:var(--wh)}

/* Header */
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.9);backdrop-filter:blur(16px);border-bottom:1px solid rgba(226,232,240,.7);transition:.3s}
.site-header:hover{box-shadow:var(--sh)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:70px}
.brand{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:800;color:var(--p);white-space:nowrap}
.brand .logo-dot{width:32px;height:32px;background:linear-gradient(135deg,var(--pl),var(--p));border-radius:10px;display:inline-flex;align-items:center;justify-content:center;color:#fff;font-size:15px;box-shadow:0 4px 12px rgba(11,59,140,.25)}
.brand:hover .logo-dot{transform:rotate(8deg)}
.main-nav{display:flex;gap:4px}
.main-nav .nav-link{font-size:15px;font-weight:600;padding:10px 16px;color:var(--mu);border-radius:8px;transition:.25s;line-height:1}
.main-nav .nav-link:hover{color:var(--p);background:rgba(30,111,242,.08)}
.main-nav .nav-link.active{color:var(--pl);background:rgba(30,111,242,.12)}
.header-actions{display:flex;align-items:center;gap:12px}
.search-box{position:relative}
.search-box input{width:180px;height:40px;background:var(--bg);border:1px solid transparent;border-radius:40px;padding:0 16px 0 38px;font-size:14px;transition:.3s;outline:none}
.search-box input:focus{width:220px;background:#fff;border-color:var(--pl);box-shadow:0 0 0 4px rgba(30,111,242,.1)}
.search-box i{position:absolute;left:14px;top:50%;transform:translateY(-50%);color:var(--mu);font-size:14px}
.menu-toggle{display:none;background:none;border:none;font-size:24px;color:var(--tx);cursor:pointer;width:40px;height:40px;border-radius:10px;transition:.2s}
.menu-toggle:hover{background:var(--bg)}

/* Hero */
.hero{position:relative;padding:110px 0 100px;background-size:cover;background-position:center;background-repeat:no-repeat}
.hero::before{content:'';position:absolute;inset:0;background:linear-gradient(120deg,rgba(11,59,140,.92) 20%,rgba(11,59,140,.65) 55%,rgba(30,111,242,.4) 100%)}
.hero .container{position:relative;z-index:2}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.3);color:#fff;padding:8px 20px;border-radius:40px;font-size:14px;font-weight:600;backdrop-filter:blur(6px);margin-bottom:24px}
.hero-badge i{color:#ffd166}
.hero h1{font-size:48px;line-height:1.2;font-weight:900;color:#fff;letter-spacing:-1px;max-width:720px}
.hero p{font-size:18px;color:rgba(255,255,255,.85);max-width:620px;margin:20px 0 34px}
.hero-actions{display:flex;flex-wrap:wrap;gap:16px}
.hero-stats{display:flex;gap:40px;margin-top:60px;padding-top:40px;border-top:1px solid rgba(255,255,255,.2)}
.hero-stat .num{font-size:30px;font-weight:800;color:#fff}
.hero-stat .label{font-size:13px;color:rgba(255,255,255,.7);margin-top:4px}

/* Feature cards */
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.feature-card{background:var(--wh);border:1px solid var(--bd);border-radius:var(--r);padding:36px 30px;box-shadow:var(--sh);transition:.3s}
.feature-card:hover{transform:translateY(-6px);box-shadow:var(--shl)}
.feature-icon{width:56px;height:56px;border-radius:16px;background:linear-gradient(135deg,rgba(30,111,242,.15),rgba(11,59,140,.1));display:flex;align-items:center;justify-content:center;font-size:24px;color:var(--pl);margin-bottom:20px}
.feature-card h3{font-size:20px;font-weight:800;margin-bottom:10px}
.feature-card p{color:var(--mu);font-size:15px}
.feature-card .feature-link{display:inline-flex;align-items:center;gap:6px;margin-top:16px;font-weight:600;color:var(--pl);font-size:14px;transition:.2s}
.feature-card .feature-link:hover{gap:10px}

/* Category cards */
.cat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.cat-card{position:relative;border-radius:var(--r);overflow:hidden;background:var(--wh);box-shadow:var(--sh);transition:.35s;border:1px solid var(--bd)}
.cat-card:hover{transform:translateY(-6px);box-shadow:var(--shl)}
.cat-card .cat-cover{height:190px;overflow:hidden;position:relative;background-size:cover;background-position:center}
.cat-card .cat-cover img{width:100%;height:100%;object-fit:cover;transition:.5s}
.cat-card:hover .cat-cover img{transform:scale(1.05)}
.cat-card .cat-body{padding:26px 24px;text-align:center}
.cat-card .cat-body h3{font-size:19px;font-weight:800;margin:8px 0 8px}
.cat-card .cat-body p{color:var(--mu);font-size:14px;line-height:1.6;margin-bottom:16px}
.cat-card .cat-tag{display:inline-flex;align-items:center;gap:6px;color:var(--pl);font-size:14px;font-weight:700;transition:.2s}
.cat-card .cat-tag i{transition:.2s}
.cat-card .cat-tag:hover{gap:10px}

/* Stats section */
.stats-section{background:linear-gradient(135deg,var(--p),var(--pl));padding:70px 0;color:#fff;border-radius:24px;text-align:center}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:30px}
.stat-item .stat-icon{font-size:32px;margin-bottom:8px;opacity:.9}
.stat-item .stat-num{font-size:38px;font-weight:900;line-height:1.2}
.stat-item .stat-label{font-size:15px;opacity:.85;margin-top:6px}

/* News */
.news-layout{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.news-card{background:var(--wh);border:1px solid var(--bd);border-radius:var(--r);padding:28px;transition:.3s;box-shadow:0 2px 12px rgba(11,59,140,.04);display:flex;flex-direction:column;gap:10px}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shl);border-color:transparent}
.news-card-head{display:flex;justify-content:space-between;align-items:center;font-size:13px;color:var(--mu)}
.news-card h3{font-size:18px;font-weight:800;color:var(--tx);line-height:1.4}
.news-card p{color:var(--mu);font-size:14px;line-height:1.6;flex:1}
.news-more{display:inline-flex;align-items:center;gap:6px;font-weight:700;color:var(--pl);font-size:14px}
.news-more i{transition:.2s}
.news-card:hover .news-more i{transform:translateX(4px)}
.empty-tip{padding:40px;text-align:center;background:var(--wh);border:1px dashed var(--bd);border-radius:var(--r);color:var(--mu);font-size:15px;grid-column:1/-1}

/* Steps */
.steps-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;position:relative}
.step-item{text-align:center;position:relative;padding:0 10px}
.step-num{width:48px;height:48px;margin:0 auto 18px;background:linear-gradient(135deg,var(--pl),var(--p));color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:18px;box-shadow:0 8px 20px rgba(11,59,140,.25);position:relative;z-index:2}
.step-item h3{font-size:17px;font-weight:800;margin-bottom:8px}
.step-item p{font-size:14px;color:var(--mu);line-height:1.6}
.step-line{position:absolute;top:24px;left:calc(12.5% + 24px);right:calc(12.5% + 24px);height:2px;background:repeating-linear-gradient(90deg,var(--pl) 0 8px,transparent 8px 16px);z-index:1;opacity:.4}

/* FAQ */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{background:var(--wh);border:1px solid var(--bd);border-radius:14px;margin-bottom:16px;overflow:hidden;transition:.25s}
.faq-item:hover{border-color:rgba(30,111,242,.4)}
.faq-q{padding:20px 24px;cursor:pointer;font-weight:700;display:flex;justify-content:space-between;align-items:center;gap:16px}
.faq-q i{color:var(--pl);transition:.3s;font-size:15px}
.faq-a{padding:0 24px;color:var(--mu);font-size:15px;line-height:1.7;max-height:0;overflow:hidden;transition:.3s}
.faq-item.open .faq-a{max-height:200px;padding-bottom:20px}
.faq-item.open .faq-q i{transform:rotate(180deg)}
.faq-item.open{box-shadow:var(--sh)}

/* CTA */
.cta-section{position:relative;border-radius:28px;overflow:hidden;background:linear-gradient(135deg,var(--p) 0%,var(--pl) 100%);padding:72px 64px;text-align:center;color:#fff}
.cta-section::before{content:'';position:absolute;inset:0;background:radial-gradient(circle at 20% 30%,rgba(255,255,255,.15),transparent 50%),radial-gradient(circle at 80% 70%,rgba(255,107,74,.3),transparent 50%)}
.cta-section .container{position:relative;z-index:2}
.cta-section h2{font-size:34px;font-weight:900}
.cta-section p{font-size:17px;opacity:.9;max-width:600px;margin:16px auto 32px}
.cta-actions{display:flex;justify-content:center;gap:16px;flex-wrap:wrap}

/* Footer */
.site-footer{background:#0b1628;color:#94a3b8;padding:64px 0 0;margin-top:20px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px}
.footer-brand .brand{color:#fff;margin-bottom:16px}
.footer-brand p{font-size:14px;line-height:1.7;max-width:280px}
.footer-col h4{color:#fff;font-size:16px;margin-bottom:16px;font-weight:700}
.footer-col ul li{margin-bottom:10px}
.footer-col ul li a{font-size:14px;transition:.2s}
.footer-col ul li a:hover{color:#fff;padding-left:6px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:22px 0;font-size:13px;text-align:center;color:#64748b}
.footer-bottom a{color:#94a3b8}
.footer-bottom a:hover{color:#fff}

/* Page hero for inner pages */
.page-hero{position:relative;padding:90px 0 80px;background-size:cover;background-position:center;background-repeat:no-repeat}
.page-hero::before{content:'';position:absolute;inset:0;background:linear-gradient(120deg,rgba(11,59,140,.92),rgba(30,111,242,.75))}
.page-hero .container{position:relative;z-index:2;text-align:center}
.page-hero .breadcrumb{font-size:14px;color:rgba(255,255,255,.75);margin-bottom:16px}
.page-hero .breadcrumb a{color:rgba(255,255,255,.85)}
.page-hero .breadcrumb a:hover{color:#fff}
.page-hero h1{font-size:40px;font-weight:900;color:#fff;letter-spacing:-.5px}
.page-hero p{font-size:17px;color:rgba(255,255,255,.85);max-width:680px;margin:14px auto 0}

/* Article */
.article-wrap{max-width:860px;margin:0 auto}
.article-card{background:var(--wh);border-radius:var(--r);box-shadow:var(--shl);padding:48px 56px}
.article-card h1{font-size:32px;font-weight:900;line-height:1.4;margin-bottom:16px}
.article-meta{display:flex;gap:18px;flex-wrap:wrap;font-size:14px;color:var(--mu);padding-bottom:24px;border-bottom:1px solid var(--bd);margin-bottom:28px}
.article-meta .meta-item{display:inline-flex;align-items:center;gap:6px}
.article-meta .meta-item i{color:var(--pl)}
.rich-text{font-size:16px;line-height:1.9;color:#334155}
.rich-text h2,.rich-text h3{margin:28px 0 12px;color:var(--tx);font-weight:800}
.rich-text p{margin-bottom:16px}
.rich-text ul,.rich-text ol{padding-left:24px;margin-bottom:16px}
.rich-text li{margin-bottom:8px;list-style:disc}
.rich-text ol li{list-style:decimal}
.rich-text blockquote{border-left:4px solid var(--pl);background:#f0f6ff;padding:14px 20px;border-radius:0 10px 10px 0;margin:20px 0;color:var(--p)}
.rich-text img{border-radius:12px;margin:20px 0}
.article-nav{display:flex;justify-content:space-between;font-size:14px;margin-top:36px}
.article-nav a{color:var(--pl);font-weight:600;display:inline-flex;align-items:center;gap:8px;transition:.2s}
.article-nav a:hover{gap:12px}
.not-found{text-align:center;padding:80px 0}
.not-found h1{font-size:36px;margin-bottom:16px}
.not-found p{color:var(--mu);margin-bottom:24px}

/* Misc */
.empty-tip{text-align:center;padding:40px}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:28px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.icon-text{display:inline-flex;align-items:center;gap:8px}
.text-center{text-align:center}

@media(max-width:1024px){
.section{padding:60px 0}
.feature-grid,.cat-grid{grid-template-columns:repeat(2,1fr)}
.stats-grid{grid-template-columns:repeat(2,1fr)}
.steps-grid{grid-template-columns:repeat(2,1fr)}
.step-line{display:none}
.footer-grid{grid-template-columns:1fr 1fr}
.hero h1{font-size:38px}
.article-card{padding:36px}
}
@media(max-width:768px){
.header-inner{flex-wrap:wrap;height:auto;padding:12px 0;gap:12px}
.main-nav{display:none;width:100%;flex-direction:column;background:var(--wh);padding:16px;border-radius:14px;box-shadow:var(--shl);border:1px solid var(--bd)}
.main-nav.open{display:flex}
.main-nav .nav-link{padding:12px 16px}
.header-actions{flex:1}
.search-box{flex:1}
.search-box input,.search-box input:focus{width:100%}
.menu-toggle{display:inline-flex;align-items:center;justify-content:center}
.hero{padding:80px 0}
.hero-stats{flex-wrap:wrap;gap:20px}
.hero-stat{flex:1;min-width:120px}
.cta-section{padding:48px 24px}
.article-card{padding:24px;border-radius:12px}
}
@media(max-width:520px){
.feature-grid,.cat-grid,.news-layout,.stats-grid,.steps-grid,.grid-2,.grid-4{grid-template-columns:1fr}
.section-head h2{font-size:26px}
.hero h1{font-size:28px}
.hero p{font-size:15px}
.hero-actions .btn{width:100%}
.page-hero h1{font-size:28px}
.footer-grid{grid-template-columns:1fr}
.article-card h1{font-size:24px}
.cta-actions .btn{width:100%}
.cta-section h2{font-size:24px}
.btn{width:auto}
}

/* roulang page: article */
:root {
    --primary: #1e40af;
    --primary-dark: #172f8a;
    --primary-light: #3b82f6;
    --accent: #f59e0b;
    --accent-dark: #d97706;
    --bg: #f6f8fc;
    --surface: #ffffff;
    --text: #1e293b;
    --text-weak: #5b6b82;
    --border: #e5eaf1;
    --radius: 16px;
    --radius-sm: 10px;
    --shadow: 0 4px 24px rgba(30, 64, 175, 0.08);
    --shadow-lg: 0 12px 36px rgba(30, 64, 175, 0.14);
    --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}
*, *::before, *::after { box-sizing: border-box; }
body { margin: 0; font-family: var(--font); background: var(--bg); color: var(--text); line-height: 1.75; -webkit-font-smoothing: antialiased; }
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
button, input { font-family: inherit; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

.site-header { position: sticky; top: 0; z-index: 100; background: rgba(255, 255, 255, 0.92); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); border-bottom: 1px solid var(--border); }
.header-inner { display: flex; align-items: center; min-height: 72px; gap: 28px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 20px; color: var(--primary); white-space: nowrap; }
.brand > span { color: var(--accent); }
.logo-dot { width: 38px; height: 38px; background: linear-gradient(135deg, var(--primary), var(--primary-light)); color: #fff; border-radius: 10px; display: inline-flex; align-items: center; justify-content: center; font-size: 16px; flex-shrink: 0; }
.main-nav { display: flex; gap: 4px; flex: 1; }
.nav-link { padding: 8px 16px; border-radius: 8px; color: var(--text-weak); font-weight: 600; font-size: 15px; transition: all 0.2s; }
.nav-link:hover { color: var(--primary); background: #eef2ff; }
.nav-link.active { color: var(--primary); background: #eef2ff; }
.header-actions { display: flex; align-items: center; gap: 14px; }
.nav-search { display: flex; align-items: center; gap: 8px; background: #f1f5f9; border-radius: 30px; padding: 8px 16px; border: 1px solid transparent; transition: all 0.2s; width: 200px; }
.nav-search i { color: var(--text-weak); font-size: 14px; }
.nav-search input { border: none; outline: none; background: transparent; font-size: 14px; width: 100%; color: var(--text); }
.nav-search:focus-within { border-color: var(--primary-light); background: #fff; box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.12); }
.nav-toggle { display: none; background: none; border: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 8px; }
.nav-toggle span { width: 22px; height: 2px; background: var(--text); border-radius: 2px; transition: all 0.3s; }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 10px 22px; border-radius: 10px; font-weight: 700; font-size: 15px; border: none; cursor: pointer; transition: all 0.25s; }
.btn-primary { background: linear-gradient(135deg, var(--primary), var(--primary-light)); color: #fff; box-shadow: 0 4px 14px rgba(30, 64, 175, 0.3); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(30, 64, 175, 0.4); }
.btn-accent { background: linear-gradient(135deg, var(--accent), #fbbf24); color: #1e1b4b; box-shadow: 0 4px 14px rgba(245, 158, 11, 0.35); }
.btn-accent:hover { transform: translateY(-2px); box-shadow: 0 8px 22px rgba(245, 158, 11, 0.45); }
.btn-outline { background: transparent; border: 1.5px solid var(--primary); color: var(--primary); }
.btn-outline:hover { background: #eef2ff; }
.btn-sm { padding: 7px 16px; font-size: 14px; }
.btn-lg { padding: 14px 32px; font-size: 16px; }

.page-banner { position: relative; padding: 60px 0 52px; background: linear-gradient(135deg, rgba(15, 23, 42, 0.92), rgba(30, 64, 175, 0.85)), url('/assets/images/backpic/back-1.png') center/cover no-repeat; color: #fff; border-bottom: 4px solid var(--accent); }
.banner-tag { display: inline-flex; align-items: center; gap: 8px; background: rgba(255, 255, 255, 0.14); border: 1px solid rgba(255, 255, 255, 0.25); padding: 6px 16px; border-radius: 30px; font-size: 14px; margin-bottom: 16px; }
.banner-tag i { color: var(--accent); }
.breadcrumb { display: flex; align-items: center; gap: 8px; font-size: 14px; color: rgba(255, 255, 255, 0.72); }
.breadcrumb a { color: rgba(255, 255, 255, 0.85); transition: color 0.2s; }
.breadcrumb a:hover { color: #fff; }
.breadcrumb .sep { opacity: 0.5; }

.article-section { padding: 56px 0 72px; }
.article-wrap { display: grid; grid-template-columns: 1fr 340px; gap: 32px; align-items: start; }
.article-card { background: var(--surface); border-radius: var(--radius); box-shadow: var(--shadow); padding: 44px; }
.article-title { font-size: 32px; line-height: 1.35; font-weight: 800; margin-bottom: 18px; color: var(--text); }
.article-meta { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 28px; padding-bottom: 24px; border-bottom: 1px solid var(--border); }
.meta-chip { display: inline-flex; align-items: center; gap: 6px; font-size: 14px; color: var(--text-weak); background: #f8fafc; border: 1px solid var(--border); padding: 5px 12px; border-radius: 30px; }
.meta-chip i { color: var(--primary); }
.article-body { font-size: 16.5px; line-height: 2; color: #334155; }
.article-body h2 { font-size: 24px; font-weight: 800; color: var(--text); margin: 36px 0 16px; }
.article-body h3 { font-size: 19px; font-weight: 700; color: var(--text); margin: 28px 0 12px; }
.article-body p { margin-bottom: 18px; }
.article-body ul, .article-body ol { margin: 0 0 18px 22px; padding-left: 8px; }
.article-body li { margin-bottom: 8px; }
.article-body blockquote { border-left: 4px solid var(--accent); background: #fffbeb; padding: 16px 20px; border-radius: 0 10px 10px 0; margin: 24px 0; color: #78350f; }
.article-body img { border-radius: 12px; margin: 24px 0; }
.article-body a { color: var(--primary); text-decoration: underline; }
.article-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 30px; padding-top: 22px; border-top: 1px solid var(--border); }
.article-tag { background: #eef2ff; color: var(--primary); padding: 5px 14px; border-radius: 20px; font-size: 13px; font-weight: 600; }
.article-share { display: flex; align-items: center; gap: 10px; margin-top: 26px; padding-top: 20px; border-top: 1px solid var(--border); font-size: 14px; color: var(--text-weak); }
.article-share a { display: inline-flex; align-items: center; justify-content: center; width: 34px; height: 34px; border-radius: 50%; background: #f1f5f9; color: var(--text-weak); transition: all 0.2s; }
.article-share a:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }

.not-found-box { text-align: center; padding: 60px 20px; }
.not-found-box .icon-circle { width: 84px; height: 84px; margin: 0 auto 24px; background: #f1f5f9; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 32px; color: var(--text-weak); }
.not-found-box h2 { font-size: 28px; margin-bottom: 10px; }
.not-found-box p { color: var(--text-weak); margin-bottom: 24px; }

.sidebar-card { background: var(--surface); border-radius: var(--radius); box-shadow: var(--shadow); padding: 28px; margin-bottom: 24px; }
.sidebar-card h3 { font-size: 18px; font-weight: 800; margin-bottom: 18px; padding-bottom: 12px; border-bottom: 2px solid var(--border); position: relative; }
.sidebar-card h3::after { content: ''; position: absolute; bottom: -2px; left: 0; width: 48px; height: 2px; background: var(--accent); border-radius: 2px; }
.sidebar-link { display: flex; align-items: center; gap: 10px; padding: 10px 12px; border-radius: 8px; color: var(--text-weak); font-weight: 600; transition: all 0.2s; }
.sidebar-link:hover { background: #f8fafc; color: var(--primary); transform: translateX(4px); }
.sidebar-link i { color: var(--primary); width: 18px; text-align: center; }
.sidebar-note { background: linear-gradient(135deg, #eef2ff, #f8fafc); border: 1px solid #e0e7ff; border-radius: 12px; padding: 18px; }
.sidebar-note h4 { font-size: 15px; margin-bottom: 8px; color: var(--primary); }
.sidebar-note p { font-size: 14px; color: var(--text-weak); line-height: 1.7; margin: 0; }

.related-section { padding: 64px 0 72px; background: var(--bg); border-top: 1px solid var(--border); }
.section-head { text-align: center; margin-bottom: 44px; }
.section-tag { display: inline-block; background: #eef2ff; color: var(--primary); font-size: 13px; font-weight: 700; padding: 5px 14px; border-radius: 20px; margin-bottom: 12px; }
.section-head h2 { font-size: 32px; font-weight: 800; margin: 0 0 10px; }
.section-head p { color: var(--text-weak); max-width: 560px; margin: 0 auto; }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.related-card { background: var(--surface); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); transition: all 0.3s; display: flex; flex-direction: column; }
.related-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.card-img { height: 180px; overflow: hidden; position: relative; }
.card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s; }
.related-card:hover .card-img img { transform: scale(1.05); }
.card-body { padding: 24px; display: flex; flex-direction: column; flex: 1; }
.card-cat { color: var(--accent); font-size: 13px; font-weight: 700; margin-bottom: 8px; }
.card-body h3 { font-size: 18px; margin: 8px 0 10px; line-height: 1.45; }
.card-body h3 a:hover { color: var(--primary); }
.card-body p { color: var(--text-weak); font-size: 14px; line-height: 1.7; margin-bottom: 14px; flex: 1; }
.card-link { color: var(--primary); font-weight: 700; font-size: 14px; display: inline-flex; align-items: center; gap: 6px; }
.card-link i { transition: transform 0.2s; }
.card-link:hover i { transform: translateX(4px); }

.cta-section { padding: 72px 0; background: linear-gradient(135deg, #0f172a, #1e3a8a); color: #fff; position: relative; overflow: hidden; }
.cta-section::before { content: ''; position: absolute; inset: 0; background: url('/assets/images/backpic/back-2.png') center/cover no-repeat; opacity: 0.14; }
.cta-inner { position: relative; text-align: center; max-width: 640px; margin: 0 auto; }
.cta-inner h2 { font-size: 32px; font-weight: 800; margin-bottom: 16px; }
.cta-inner p { color: rgba(255, 255, 255, 0.85); font-size: 16px; margin-bottom: 28px; }
.cta-btn-group { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

.site-footer { background: #0f172a; color: #94a3b8; padding: 64px 0 0; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; padding-bottom: 48px; }
.footer-brand { grid-column: span 1; }
.footer-brand .brand { color: #fff; font-size: 20px; margin-bottom: 16px; display: inline-flex; }
.footer-brand p { font-size: 14px; line-height: 1.8; max-width: 340px; }
.footer-col h4 { color: #fff; font-size: 15px; font-weight: 700; margin-bottom: 18px; }
.footer-col ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.footer-col a { font-size: 14px; color: #94a3b8; transition: all 0.2s; }
.footer-col a:hover { color: #fff; padding-left: 6px; }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, 0.08); padding: 20px 0; text-align: center; font-size: 14px; color: #64748b; }
.footer-bottom a { color: #94a3b8; }
.footer-bottom a:hover { color: #fff; }

@media (max-width: 1024px) {
    .nav-search { width: 150px; }
    .article-wrap { grid-template-columns: 1fr; }
    .related-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
    .site-header { padding: 10px 0; }
    .main-nav { position: fixed; top: 72px; left: 0; right: 0; background: #fff; flex-direction: column; padding: 16px 24px; gap: 4px; box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1); transform: translateY(-20px); opacity: 0; pointer-events: none; transition: all 0.3s; border-bottom: 1px solid var(--border); }
    .main-nav.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
    .main-nav .nav-link { padding: 12px 16px; font-size: 16px; }
    .nav-search { display: none; }
    .nav-toggle { display: flex; }
    .header-actions .btn-accent { display: none; }
    .related-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .article-card { padding: 28px 22px; }
    .article-title { font-size: 24px; }
    .cta-inner h2 { font-size: 26px; }
    .page-banner { padding: 44px 0 38px; }
}
@media (max-width: 520px) {
    .footer-grid { grid-template-columns: 1fr; }
    .brand { font-size: 17px; }
    .header-inner { gap: 12px; }
    .header-actions { gap: 8px; }
    .container { padding: 0 18px; }
    .article-body { font-size: 15.5px; }
}

/* roulang page: category1 */
:root{
  --primary:#0f2b5b;
  --primary-600:#1b3f7d;
  --primary-50:#eef3fb;
  --accent:#c9a45c;
  --accent-600:#a8873f;
  --bg-page:#f6f8fc;
  --bg-white:#ffffff;
  --text-main:#16233f;
  --text-sub:#54709b;
  --border:#dce4f0;
  --radius-lg:18px;
  --radius-md:12px;
  --radius-sm:8px;
  --shadow-sm:0 2px 10px rgba(15,43,91,.06);
  --shadow-md:0 10px 32px rgba(15,43,91,.10);
  --shadow-lg:0 22px 60px rgba(15,43,91,.16);
  --space-section:90px;
  --font-main:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font-main);background:var(--bg-page);color:var(--text-main);line-height:1.7;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit;transition:color .25s ease,border-color .25s ease,box-shadow .25s ease}
ul,ol{list-style:none}
button,input{font-family:inherit;font-size:inherit}
:focus{outline:3px solid rgba(201,164,92,.4);outline-offset:2px}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:var(--space-section) 0}
.section-head{text-align:center;max-width:720px;margin:0 auto 52px}
.section-tag{display:inline-flex;align-items:center;gap:8px;background:rgba(201,164,92,.12);border:1px solid rgba(201,164,92,.3);color:var(--accent-600);font-size:13px;font-weight:600;letter-spacing:.08em;padding:6px 18px;border-radius:40px;text-transform:uppercase}
.section-title{font-size:34px;font-weight:800;color:var(--primary);line-height:1.3;margin-top:16px}
.section-desc{font-size:16px;color:var(--text-sub);margin-top:12px}

/* 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 rgba(220,228,240,.8);box-shadow:0 2px 18px rgba(15,43,91,.04)}
.header-inner{display:flex;align-items:center;gap:24px;height:72px}
.brand{display:flex;align-items:center;gap:10px;font-size:20px;font-weight:800;color:var(--primary);white-space:nowrap}
.brand:hover{opacity:.9}
.logo-dot{width:38px;height:38px;border-radius:11px;background:linear-gradient(145deg,var(--primary),var(--primary-600));display:inline-flex;align-items:center;justify-content:center;color:#fff;font-size:16px;box-shadow:0 6px 16px rgba(15,43,91,.28)}
.main-nav{display:flex;align-items:center;gap:4px;margin:0 auto}
.nav-link{position:relative;font-size:15px;font-weight:600;color:var(--text-sub);padding:9px 16px;border-radius:var(--radius-sm);transition:color .25s ease,background .25s ease}
.nav-link:hover{color:var(--primary);background:rgba(15,43,91,.05)}
.nav-link.active{color:var(--primary);background:var(--primary-50)}
.nav-link.active::after{content:"";position:absolute;left:16px;right:16px;bottom:2px;height:2px;border-radius:2px;background:var(--accent)}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto}
.nav-search{position:relative;display:flex;align-items:center;background:var(--bg-page);border:1px solid var(--border);border-radius:46px;padding:0 8px 0 14px;height:40px;width:224px;transition:border-color .25s,box-shadow .25s}
.nav-search:focus-within{border-color:var(--accent);box-shadow:0 0 0 4px rgba(201,164,92,.18);background:#fff}
.nav-search-icon{color:var(--text-sub);font-size:13px;margin-right:8px}
.nav-search-input{border:none;background:transparent;font-size:13px;color:var(--text-main);width:100%;outline:none}
.nav-search-input::placeholder{color:#94a3c4}
.search-kbd{flex-shrink:0;font-size:11px;color:#94a3c4;background:#fff;border:1px solid var(--border);border-radius:6px;padding:2px 7px;margin-left:4px;box-shadow:0 1px 2px rgba(0,0,0,.04)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-size:14px;font-weight:700;padding:11px 24px;border-radius:46px;border:none;cursor:pointer;transition:transform .25s,box-shadow .25s,background .25s;line-height:1.4}
.btn-sm{padding:8px 18px;font-size:13px}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 8px 22px rgba(15,43,91,.3)}
.btn-primary:hover{background:var(--primary-600);transform:translateY(-2px);box-shadow:0 12px 28px rgba(15,43,91,.36)}
.btn-accent{background:linear-gradient(135deg,var(--accent),var(--accent-600));color:#0f2b5b;box-shadow:0 8px 22px rgba(201,164,92,.35)}
.btn-accent:hover{transform:translateY(-2px);box-shadow:0 12px 28px rgba(201,164,92,.45);color:#0f2b5b}
.btn-outline{border:2px solid var(--accent);color:var(--accent-600);background:transparent}
.btn-outline:hover{background:rgba(201,164,92,.1);transform:translateY(-2px)}
.btn>.fa-arrow-right{font-size:12px;transition:transform .25s}
.btn:hover>.fa-arrow-right{transform:translateX(3px)}
.nav-toggle{display:none;background:none;border:1px solid var(--border);border-radius:10px;width:40px;height:40px;font-size:16px;color:var(--primary);cursor:pointer;align-items:center;justify-content:center}
.nav-toggle:hover{border-color:var(--accent);color:var(--accent)}

/* Banner */
.page-banner{position:relative;padding:92px 0 88px;background:linear-gradient(120deg,rgba(15,43,91,.94),rgba(27,63,125,.85)),url('/assets/images/backpic/back-1.png') center/cover no-repeat;color:#fff;text-align:center;overflow:hidden}
.page-banner::after{content:"";position:absolute;bottom:-80px;left:50%;transform:translateX(-50%);width:900px;height:200px;background:radial-gradient(closest-side,rgba(201,164,92,.22),transparent);pointer-events:none}
.banner-breadcrumb{display:inline-flex;align-items:center;gap:10px;font-size:13px;color:rgba(255,255,255,.75);background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.18);border-radius:40px;padding:7px 18px;margin-bottom:24px;backdrop-filter:blur(6px)}
.banner-breadcrumb a{color:rgba(255,255,255,.7)}
.banner-breadcrumb a:hover{color:#fff}
.banner-breadcrumb .sep{opacity:.5}
.banner-title{font-size:46px;font-weight:800;line-height:1.25;letter-spacing:.01em;max-width:760px;margin:0 auto 16px}
.banner-title .brand-text{color:var(--accent)}
.banner-desc{font-size:17px;line-height:1.8;color:rgba(255,255,255,.82);max-width:640px;margin:0 auto 36px}
.banner-search{max-width:560px;margin:0 auto;position:relative}
.banner-search-input{width:100%;height:56px;border-radius:46px;border:2px solid rgba(255,255,255,.25);background:rgba(255,255,255,.95);padding:0 130px 0 24px;font-size:15px;color:var(--text-main);box-shadow:0 18px 50px rgba(0,0,0,.25);transition:.3s}
.banner-search-input:focus{outline:none;border-color:var(--accent);box-shadow:0 18px 50px rgba(0,0,0,.25),0 0 0 5px rgba(201,164,92,.25)}
.banner-search-btn{position:absolute;right:6px;top:6px;height:44px;border-radius:40px;background:linear-gradient(135deg,var(--accent),var(--accent-600));color:var(--primary);font-weight:700;font-size:14px;border:none;padding:0 22px;cursor:pointer;transition:.3s;display:flex;align-items:center;gap:8px}
.banner-search-btn:hover{transform:translateY(-2px);box-shadow:0 8px 20px rgba(201,164,92,.4)}
.banner-tags{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin-top:22px}
.banner-tag{font-size:12px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.16);border-radius:30px;padding:4px 13px;color:rgba(255,255,255,.85)}

/* Method cards */
.method-card{background:#fff;border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--border);box-shadow:var(--shadow-sm);height:100%;display:flex;flex-direction:column;transition:transform .3s,box-shadow .3s}
.method-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-md)}
.method-card-cover{overflow:hidden;height:200px}
.method-card-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.method-card:hover .method-card-cover img{transform:scale(1.05)}
.method-card-body{padding:26px 24px 28px;display:flex;flex-direction:column;flex:1}
.method-icon{width:46px;height:46px;border-radius:12px;background:var(--primary-50);display:flex;align-items:center;justify-content:center;color:var(--primary);font-size:19px;margin-bottom:16px}
.method-card:nth-child(2) .method-icon{background:rgba(201,164,92,.15);color:var(--accent-600)}
.method-card:nth-child(3) .method-icon{background:rgba(27,63,125,.1);color:var(--primary-600)}
.method-card:nth-child(4) .method-icon{background:rgba(15,43,91,.06);color:var(--primary)}
.method-card h3{font-size:18px;font-weight:700;color:var(--text-main);margin-bottom:8px}
.method-card p{font-size:14px;color:var(--text-sub);flex:1;line-height:1.75}
.method-card .method-link{margin-top:16px;font-size:13px;font-weight:600;color:var(--accent-600);display:inline-flex;align-items:center;gap:6px}
.method-card .method-link:hover{color:var(--primary)}
.method-card .method-link i{font-size:11px;transition:transform .25s}
.method-card .method-link:hover i{transform:translateX(3px)}

/* Steps */
.steps-section{background:#fff;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.steps-grid{position:relative;display:flex;gap:24px}
.step-item{flex:1;text-align:center;padding:28px 20px;border-radius:var(--radius-lg);transition:background .3s,box-shadow .3s;position:relative}
.step-item:hover{background:var(--primary-50)}
.step-num{width:58px;height:58px;margin:0 auto 18px;border-radius:50%;background:linear-gradient(145deg,var(--primary),var(--primary-600));color:#fff;font-weight:800;font-size:20px;display:flex;align-items:center;justify-content:center;box-shadow:0 8px 20px rgba(15,43,91,.25);position:relative;z-index:2}
.step-item h3{font-size:17px;font-weight:700;color:var(--text-main);margin-bottom:8px}
.step-item p{font-size:13px;color:var(--text-sub);line-height:1.7;max-width:240px;margin:0 auto}
.step-connector{position:absolute;top:57px;left:calc(50% + 38px);width:calc(100% - 76px);height:2px;background:repeating-linear-gradient(90deg,var(--accent) 0 4px,transparent 4px 10px);opacity:.6}

/* Articles */
.article-card{background:#fff;border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--border);box-shadow:var(--shadow-sm);height:100%;display:flex;flex-direction:column;transition:transform .3s,box-shadow .3s}
.article-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-md)}
.article-cover{height:196px;overflow:hidden;position:relative}
.article-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.article-card:hover .article-cover img{transform:scale(1.04)}
.article-cover .tag{position:absolute;top:14px;left:14px;background:rgba(15,43,91,.88);color:#fff;font-size:12px;font-weight:600;border-radius:30px;padding:4px 13px;backdrop-filter:blur(6px)}
.article-body{padding:24px 22px 26px;flex:1;display:flex;flex-direction:column}
.article-meta{display:flex;align-items:center;gap:12px;font-size:12px;color:#94a3c4;margin-bottom:10px}
.article-meta i{font-size:11px}
.article-body h3{font-size:17px;font-weight:700;line-height:1.5;margin-bottom:10px}
.article-body h3 a{color:var(--text-main)}
.article-body h3 a:hover{color:var(--primary)}
.article-body p{font-size:13px;color:var(--text-sub);line-height:1.75;flex:1;margin-bottom:16px}
.read-more{font-size:13px;font-weight:700;color:var(--accent-600);display:inline-flex;align-items:center;gap:6px}
.read-more:hover{color:var(--primary)}
.read-more i{font-size:11px;transition:transform .25s}
.read-more:hover i{transform:translateX(3px)}

/* Security */
.security-section{position:relative;background:linear-gradient(135deg,#0f2b5b,#1b3f7d);padding:80px 0;color:#fff;overflow:hidden}
.security-section::before{content:"";position:absolute;top:0;right:0;width:460px;height:460px;background:radial-gradient(closest-side,rgba(255,255,255,.08),transparent);border-radius:50%}
.security-section .section-title{color:#fff}
.security-section .section-desc{color:rgba(255,255,255,.7)}
.security-grid{margin-top:44px}
.security-item{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);backdrop-filter:blur(8px);border-radius:16px;padding:26px 24px;height:100%;transition:background .3s,transform .3s}
.security-item:hover{background:rgba(255,255,255,.11);transform:translateY(-4px)}
.security-icon{width:44px;height:44px;border-radius:10px;background:var(--accent);color:var(--primary);font-size:17px;display:flex;align-items:center;justify-content:center;margin-bottom:14px}
.security-item h3{font-size:16px;font-weight:700;margin-bottom:8px}
.security-item p{font-size:13px;color:rgba(255,255,255,.72);line-height:1.7}

/* FAQ */
.faq-section{background:#fff}
.faq-wrap{max-width:780px;margin:0 auto}
.accordion{border:none;background:transparent;margin:0}
.faq-item{border:1px solid var(--border);border-radius:14px;margin-bottom:12px;background:var(--bg-page);overflow:hidden;transition:border-color .3s,box-shadow .3s}
.faq-item:hover{border-color:rgba(201,164,92,.4)}
.faq-title{display:flex;align-items:center;justify-content:space-between;padding:18px 22px;font-size:15px;font-weight:600;color:var(--text-main);cursor:pointer;background:transparent;transition:color .3s}
.faq-title:hover{color:var(--primary)}
.faq-title .faq-icon{width:26px;height:26px;border-radius:50%;border:1px solid var(--border);display:flex;align-items:center;justify-content:center;font-size:11px;flex-shrink:0;transition:transform .3s,background .3s,color .3s}
.faq-item.open .faq-icon,.faq-item.is-active .faq-icon{transform:rotate(45deg);background:var(--accent);border-color:var(--accent);color:var(--primary)}
.faq-content{padding:0 22px 20px;font-size:14px;color:var(--text-sub);line-height:1.8}
.faq-content p{margin-bottom:0}

/* CTA */
.cta-section{position:relative;padding:88px 0;text-align:center;background:linear-gradient(rgba(15,43,91,.9),rgba(15,43,91,.92)),url('/assets/images/backpic/back-3.png') center/cover no-repeat;color:#fff}
.cta-section .section-title{color:#fff;font-size:36px}
.cta-section .section-desc{color:rgba(255,255,255,.75);margin-top:10px}
.cta-actions{display:flex;gap:16px;justify-content:center;margin-top:36px;flex-wrap:wrap}

/* Footer */
.site-footer{background:#0b1f44;color:rgba(255,255,255,.72)}
.site-footer .container{padding-top:60px;padding-bottom:24px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:44px}
.footer-brand .brand{color:#fff;font-size:20px;margin-bottom:14px}
.footer-brand p{font-size:14px;line-height:1.85;margin-top:12px;color:rgba(255,255,255,.62);max-width:340px}
.logo-dot{background:linear-gradient(145deg,#1b3f7d,#2c4a8c)}
.footer-col h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:18px;position:relative;padding-bottom:10px}
.footer-col h4::after{content:"";position:absolute;left:0;bottom:0;width:28px;height:2px;background:var(--accent);border-radius:2px}
.footer-col ul li{margin-bottom:11px}
.footer-col ul a{font-size:14px;color:rgba(255,255,255,.6);display:inline-flex;align-items:center;gap:8px}
.footer-col ul a:hover{color:#fff;}
.footer-col ul a i{width:18px;text-align:center;color:var(--accent);font-size:13px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:22px;text-align:center;font-size:13px;color:rgba(255,255,255,.45)}
.footer-bottom a{color:rgba(255,255,255,.6)}
.footer-bottom a:hover{color:var(--accent)}

/* Responsive */
@media (max-width:1024px){
  .header-inner{gap:14px}
  .nav-search{width:170px}
  .nav-link{padding:9px 10px;font-size:14px}
  .brand{font-size:18px}
  .banner-title{font-size:38px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .steps-grid{gap:12px}
}
@media (max-width:768px){
  :root{--space-section:64px}
  .section-title{font-size:26px}
  .header-inner{flex-wrap:wrap;height:auto;padding:14px 0}
  .nav-toggle{display:inline-flex}
  .header-actions{margin-left:auto}
  .nav-search{order:1;width:100%;flex:1 1 100%;margin-top:14px;display:none}
  .nav-search.open{display:flex}
  .main-nav{display:none;width:100%;flex-direction:column;gap:2px;padding:12px 0;border-top:1px solid var(--border);margin-top:12px}
  .main-nav.open{display:flex}
  .nav-link{width:100%;text-align:left;padding:11px 14px;border-radius:10px}
  .nav-link.active::after{display:none}
  .banner{padding:70px 0}
  .banner-title{font-size:30px}
  .banner-search-input{padding:0 16px}
  .banner-search-btn{position:static;width:100%;margin-top:12px;justify-content:center}
  .steps-grid{flex-direction:column;gap:14px;max-width:440px;margin:0 auto}
  .step-connector{display:none}
  .step-item{background:#fafbfe;border:1px solid var(--border)}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .cta-section .section-title{font-size:26px}
}
@media (max-width:520px){
  .brand{font-size:16px}
  .logo-dot{width:34px;height:34px;font-size:14px;border-radius:9px}
  .header-actions .btn{display:none}
  .banner-title{font-size:25px}
  .section-desc{font-size:14px}
  .method-card-cover{height:180px}
  .article-cover{height:170px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{line-height:1.8}
}

/* roulang page: category2 */
/* ========================================
   设计变量
======================================== */
:root{
  --primary:#1a4b8c;
  --primary-dark:#0f3460;
  --primary-light:#e8f0fe;
  --accent:#e8b849;
  --accent-dark:#c9a030;
  --accent-light:#fdf3d7;
  --bg:#f6f8fb;
  --bg-white:#ffffff;
  --bg-deep:#0b1f35;
  --text:#1e293b;
  --text-light:#64748b;
  --border:#e2e8f0;
  --radius:16px;
  --radius-sm:10px;
  --shadow:0 6px 24px rgba(26,75,140,.08);
  --shadow-lg:0 16px 48px rgba(15,52,96,.14);
  --transition:all .3s ease;
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}

/* ========================================
   基础 Reset & Base
======================================== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font);
  background:var(--bg);
  color:var(--text);
  line-height:1.7;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none;transition:var(--transition)}
img{max-width:100%;display:block}
button,input,textarea{font-family:inherit;font-size:inherit}
input:focus,button:focus,a:focus{outline:2px solid var(--accent);outline-offset:2px}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:88px 0}

/* ========================================
   通用按钮 / 徽章 / 标签
======================================== */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  border-radius:999px;
  font-weight:600;
  padding:13px 28px;
  border:2px solid transparent;
  cursor:pointer;
  font-size:15px;
  letter-spacing:.02em;
  transition:var(--transition);
  line-height:1;
}
.btn-primary{background:var(--accent);color:var(--primary-dark)}
.btn-primary:hover{background:var(--accent-dark);transform:translateY(-2px);box-shadow:0 8px 24px rgba(232,184,73,.35)}
.btn-outline{border-color:var(--primary);color:var(--primary)}
.btn-outline:hover{background:var(--primary);color:#fff;transform:translateY(-2px)}
.btn-outline-light{border-color:rgba(255,255,255,.7);color:#fff}
.btn-outline-light:hover{background:#fff;color:var(--primary-dark)}
.btn-lg{padding:16px 38px;font-size:17px}
.btn-sm{padding:9px 20px;font-size:14px}

.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  background:var(--accent-light);
  color:var(--accent-dark);
  border:1px solid rgba(232,184,73,.25);
  border-radius:999px;
  padding:8px 18px;
  font-size:14px;
  font-weight:600;
}
.badge-dark{
  background:rgba(255,255,255,.12);
  color:#fff;
  border-color:rgba(255,255,255,.2);
}

/* ========================================
   Header / 导航
======================================== */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:1000;
  background:rgba(255,255,255,.88);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid rgba(226,232,240,.6);
  transition:var(--transition);
}
.site-header.scrolled{box-shadow:0 4px 20px rgba(15,52,96,.08)}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:72px;
  gap:20px;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:1.35rem;
  font-weight:800;
  color:var(--text);
  white-space:nowrap;
  letter-spacing:-.01em;
}
.brand span{color:var(--primary)}
.brand span:last-child{color:var(--accent)}
.logo-dot{
  width:38px;height:38px;
  border-radius:10px;
  background:linear-gradient(135deg,var(--primary),var(--primary-dark));
  display:inline-flex;
  align-items:center;
  justify-content:center;
  color:#fff;
  font-size:16px;
  flex-shrink:0;
  box-shadow:0 4px 12px rgba(26,75,140,.35);
}
.main-nav{
  display:flex;
  align-items:center;
  gap:6px;
  margin:0 auto;
}
.nav-link{
  position:relative;
  padding:9px 18px;
  border-radius:999px;
  color:var(--text-light);
  font-weight:500;
  font-size:15px;
  transition:var(--transition);
}
.nav-link:hover{color:var(--primary);background:var(--primary-light)}
.nav-link.active{color:var(--primary-dark);background:var(--primary-light);font-weight:600}
.header-actions{
  display:flex;
  align-items:center;
  gap:12px;
}
.header-search{
  position:relative;
  display:flex;
  align-items:center;
}
.header-search i{
  position:absolute;
  left:14px;
  color:var(--text-light);
  font-size:14px;
  pointer-events:none;
}
.header-search input{
  width:200px;
  height:40px;
  border:1px solid var(--border);
  border-radius:999px;
  padding:0 16px 0 38px;
  font-size:14px;
  background:#f6f8fb;
  transition:var(--transition);
}
.header-search input:focus{
  background:#fff;
  border-color:var(--primary);
  box-shadow:0 0 0 4px rgba(26,75,140,.08);
  width:230px;
  outline:none;
}
.nav-toggle{
  display:none;
  background:none;
  border:1px solid var(--border);
  border-radius:10px;
  width:42px;height:42px;
  cursor:pointer;
  font-size:18px;
  color:var(--text);
  align-items:center;
  justify-content:center;
}

/* ========================================
   Hero
======================================== */
.page-hero{
  position:relative;
  padding:170px 0 110px;
  background:var(--bg-deep);
  background-image:linear-gradient(135deg,rgba(11,31,53,.92),rgba(26,75,140,.82)),url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  color:#fff;
  overflow:hidden;
}
.page-hero .hero-badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  background:rgba(255,255,255,.12);
  border:1px solid rgba(255,255,255,.2);
  backdrop-filter:blur(8px);
  padding:8px 20px;
  border-radius:999px;
  font-size:14px;
  font-weight:600;
  margin-bottom:24px;
}
.page-hero .hero-badge i{color:var(--accent)}
.page-hero h1{
  font-size:3.2rem;
  line-height:1.2;
  font-weight:800;
  letter-spacing:-.02em;
  margin-bottom:20px;
  max-width:700px;
}
.page-hero h1 span{
  color:var(--accent);
  position:relative;
}
.page-hero .hero-desc{
  font-size:1.15rem;
  color:rgba(255,255,255,.85);
  max-width:620px;
  margin-bottom:36px;
  line-height:1.8;
}
.hero-actions{
  display:flex;
  gap:14px;
  flex-wrap:wrap;
  margin-bottom:32px;
}
.hero-tags{
  display:flex;
  gap:10px;
  flex-wrap:wrap;
}
.hero-tags span{
  background:rgba(255,255,255,.1);
  border:1px solid rgba(255,255,255,.15);
  padding:6px 14px;
  border-radius:999px;
  font-size:13px;
  color:rgba(255,255,255,.9);
}

/* ========================================
   板块通用
======================================== */
.section-header{
  text-align:center;
  max-width:720px;
  margin:0 auto 56px;
}
.section-eyebrow{
  display:inline-block;
  font-size:13px;
  font-weight:700;
  text-transform:uppercase;
  letter-spacing:.08em;
  color:var(--primary);
  background:var(--primary-light);
  padding:6px 16px;
  border-radius:999px;
  margin-bottom:16px;
}
.section-header h2{
  font-size:2.4rem;
  font-weight:800;
  letter-spacing:-.03em;
  line-height:1.25;
  color:var(--text);
  margin-bottom:16px;
}
.section-header p{
  font-size:1.05rem;
  color:var(--text-light);
  line-height:1.8;
}

/* ========================================
   核心安全能力卡片
======================================== */
.security-features{background:var(--bg-white)}
.feature-card{
  background:var(--bg);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:36px 30px;
  height:100%;
  transition:var(--transition);
  position:relative;
  overflow:hidden;
}
.feature-card::before{
  content:'';
  position:absolute;
  top:0;left:0;right:0;
  height:3px;
  background:linear-gradient(90deg,var(--primary),var(--accent));
  opacity:0;
  transition:var(--transition);
}
.feature-card:hover{
  transform:translateY(-6px);
  box-shadow:var(--shadow-lg);
  border-color:rgba(26,75,140,.15);
}
.feature-card:hover::before{opacity:1}
.feature-icon{
  width:60px;height:60px;
  border-radius:16px;
  background:var(--primary-light);
  color:var(--primary);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:22px;
  margin-bottom:22px;
  transition:var(--transition);
}
.feature-card:hover .feature-icon{
  background:var(--primary);
  color:#fff;
  transform:scale(1.05) rotate(-3deg);
}
.feature-card h3{
  font-size:1.2rem;
  font-weight:700;
  margin-bottom:12px;
}
.feature-card p{
  color:var(--text-light);
  font-size:.95rem;
  line-height:1.7;
  margin-bottom:0;
}

/* ========================================
   安全防线流程（图文区块）
======================================== */
.flow-section{
  background:var(--bg);
  position:relative;
}
.flow-image{
  position:relative;
  border-radius:var(--radius);
  overflow:hidden;
  box-shadow:var(--shadow-lg);
  height:100%;
}
.flow-image img{
  width:100%;
  height:100%;
  object-fit:cover;
}
.flow-image::after{
  content:'';
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,transparent 40%,rgba(11,31,53,.4));
}
.flow-image .flow-float{
  position:absolute;
  bottom:24px;left:24px;
  background:rgba(255,255,255,.95);
  backdrop-filter:blur(10px);
  border-radius:14px;
  padding:16px 22px;
  box-shadow:var(--shadow);
  z-index:2;
}
.flow-float .float-num{
  font-size:1.6rem;
  font-weight:800;
  color:var(--primary);
}
.flow-float .float-label{
  font-size:.85rem;
  color:var(--text-light);
}
.flow-steps{
  display:flex;
  flex-direction:column;
  gap:0;
}
.flow-step{
  display:flex;
  gap:20px;
  padding:28px 0;
  border-bottom:1px dashed var(--border);
  transition:var(--transition);
}
.flow-step:last-child{border-bottom:none}
.flow-step:hover{
  transform:translateX(8px);
}
.step-num{
  flex-shrink:0;
  width:48px;height:48px;
  border-radius:14px;
  background:var(--primary-light);
  color:var(--primary);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:1.1rem;
  font-weight:800;
  border:2px solid rgba(26,75,140,.1);
}
.flow-step:nth-child(2) .step-num{background:#eef7ec;color:#2e7d32}
.flow-step:nth-child(3) .step-num{background:var(--accent-light);color:var(--accent-dark)}
.flow-step:nth-child(4) .step-num{background:#fdeef0;color:#c62828}
.step-body h4{
  font-size:1.1rem;
  font-weight:700;
  margin-bottom:6px;
}
.step-body p{
  color:var(--text-light);
  font-size:.93rem;
  line-height:1.7;
  max-width:500px;
  margin-bottom:0;
}

/* ========================================
   安全知识精选卡片
======================================== */
.knowledge-section{background:var(--bg-white)}
.knowledge-card{
  background:var(--bg-white);
  border:1px solid var(--border);
  border-radius:var(--radius);
  overflow:hidden;
  height:100%;
  transition:var(--transition);
  display:flex;
  flex-direction:column;
}
.knowledge-card:hover{
  transform:translateY(-6px);
  box-shadow:var(--shadow-lg);
}
.knowledge-thumb{
  position:relative;
  height:200px;
  overflow:hidden;
}
.knowledge-thumb img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .6s ease;
}
.knowledge-card:hover .knowledge-thumb img{
  transform:scale(1.06);
}
.knowledge-thumb .thumb-tag{
  position:absolute;
  top:14px;left:14px;
  background:rgba(255,255,255,.92);
  color:var(--primary);
  font-size:12px;
  font-weight:700;
  padding:5px 14px;
  border-radius:999px;
  backdrop-filter:blur(4px);
}
.knowledge-body{
  padding:26px 26px 30px;
  flex:1;
  display:flex;
  flex-direction:column;
}
.knowledge-body h3{
  font-size:1.15rem;
  font-weight:700;
  margin-bottom:10px;
  line-height:1.4;
}
.knowledge-body p{
  color:var(--text-light);
  font-size:.93rem;
  line-height:1.7;
  flex:1;
  margin-bottom:16px;
}
.knowledge-meta{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding-top:14px;
  border-top:1px solid var(--border);
}
.knowledge-meta .meta-date{
  font-size:.82rem;
  color:var(--text-light);
}
.knowledge-meta .meta-link{
  font-size:.88rem;
  font-weight:600;
  color:var(--primary);
}
.knowledge-meta .meta-link i{
  transition:var(--transition);
}
.knowledge-meta .meta-link:hover i{
  transform:translateX(4px);
}

/* ========================================
   统计指标
======================================== */
.stats-section{
  background:var(--bg-deep);
  background-image:linear-gradient(135deg,rgba(11,31,53,.95),rgba(26,75,140,.88)),url('/assets/images/backpic/back-1.png');
  background-size:cover;
  background-position:center;
  padding:80px 0;
  color:#fff;
}
.stats-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:32px;
}
.stat-item{
  text-align:center;
  padding:30px 20px;
  border-radius:var(--radius);
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.1);
  backdrop-filter:blur(8px);
  transition:var(--transition);
}
.stat-item:hover{
  background:rgba(255,255,255,.1);
  transform:translateY(-4px);
}
.stat-number{
  font-size:2.8rem;
  font-weight:800;
  color:var(--accent);
  line-height:1.2;
  margin-bottom:6px;
}
.stat-label{
  font-size:.95rem;
  color:rgba(255,255,255,.85);
}

/* ========================================
   FAQ 手风琴
======================================== */
.faq-section{background:var(--bg)}
.faq-list{
  max-width:840px;
  margin:0 auto;
  display:flex;
  flex-direction:column;
  gap:14px;
}
.faq-item{
  background:var(--bg-white);
  border:1px solid var(--border);
  border-radius:var(--radius);
  overflow:hidden;
  transition:var(--transition);
}
.faq-item.active{
  box-shadow:var(--shadow);
  border-color:rgba(26,75,140,.2);
}
.faq-question{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:22px 26px;
  background:none;
  border:none;
  cursor:pointer;
  font-size:1.05rem;
  font-weight:600;
  color:var(--text);
  text-align:left;
  transition:var(--transition);
}
.faq-question:hover{color:var(--primary)}
.faq-question i{
  flex-shrink:0;
  width:28px;height:28px;
  border-radius:50%;
  background:var(--primary-light);
  color:var(--primary);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:13px;
  transition:var(--transition);
}
.faq-item.active .faq-question i{
  background:var(--primary);
  color:#fff;
  transform:rotate(180deg);
}
.faq-answer{
  max-height:0;
  overflow:hidden;
  transition:max-height .45s ease;
}
.faq-answer-inner{
  padding:0 26px 24px;
  color:var(--text-light);
  font-size:.95rem;
  line-height:1.8;
}

/* ========================================
   CTA 区块
======================================== */
.cta-section{
  background:linear-gradient(135deg,var(--primary),var(--primary-dark));
  padding:90px 0;
  position:relative;
  overflow:hidden;
}
.cta-section::before{
  content:'';
  position:absolute;
  top:-80px;right:-80px;
  width:320px;height:320px;
  border-radius:50%;
  background:rgba(255,255,255,.04);
}
.cta-section::after{
  content:'';
  position:absolute;
  bottom:-100px;left:-60px;
  width:260px;height:260px;
  border-radius:50%;
  background:rgba(232,184,73,.12);
}
.cta-box{
  position:relative;
  z-index:2;
  text-align:center;
  max-width:720px;
  margin:0 auto;
  color:#fff;
}
.cta-box h2{
  font-size:2.4rem;
  font-weight:800;
  letter-spacing:-.03em;
  margin-bottom:16px;
  line-height:1.3;
}
.cta-box p{
  font-size:1.1rem;
  color:rgba(255,255,255,.82);
  margin-bottom:34px;
  line-height:1.8;
}
.cta-actions{
  display:flex;
  gap:14px;
  justify-content:center;
  flex-wrap:wrap;
}
.cta-box .btn-primary{
  background:#fff;
  color:var(--primary-dark);
}
.cta-box .btn-primary:hover{
  background:var(--accent);
  color:var(--primary-dark);
  transform:translateY(-2px);
}

/* ========================================
   Footer
======================================== */
.site-footer{
  background:#0c1d2e;
  color:rgba(255,255,255,.75);
  padding-top:68px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:48px;
  padding-bottom:48px;
}
.footer-brand .brand{
  color:#fff;
  margin-bottom:16px;
  font-size:1.3rem;
}
.footer-brand .logo-dot{background:linear-gradient(135deg,var(--accent),#d2942a);color:#0c1d2e}
.footer-brand p{
  font-size:.92rem;
  line-height:1.8;
  color:rgba(255,255,255,.55);
  margin-top:16px;
  max-width:300px;
}
.footer-col h4{
  color:#fff;
  font-size:1rem;
  font-weight:700;
  margin-bottom:20px;
}
.footer-col ul{list-style:none;margin:0;padding:0}
.footer-col ul li{margin-bottom:12px}
.footer-col ul a{
  color:rgba(255,255,255,.6);
  font-size:.92rem;
  display:inline-flex;
  align-items:center;
  gap:8px;
  transition:var(--transition);
}
.footer-col ul a:hover{
  color:var(--accent);
  padding-left:4px;
}
.footer-col ul a i{
  font-size:.85rem;
  width:18px;
  color:rgba(255,255,255,.35);
}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);
  padding:24px 0;
  text-align:center;
  font-size:.85rem;
  color:rgba(255,255,255,.4);
}
.footer-bottom a{color:rgba(255,255,255,.55)}
.footer-bottom a:hover{color:var(--accent)}

/* ========================================
   响应式断点
======================================== */
@media (max-width:1024px){
  .section{padding:72px 0}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:36px}
  .header-search{display:none}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:20px}
}

@media (max-width:768px){
  .section{padding:56px 0}
  .header-inner{height:64px}
  .brand{font-size:1.15rem}
  .brand .logo-dot{width:32px;height:32px;font-size:14px;border-radius:8px}
  .main-nav{
    position:fixed;
    top:64px;left:0;right:0;
    background:#fff;
    flex-direction:column;
    align-items:stretch;
    padding:16px 24px 24px;
    border-bottom:1px solid var(--border);
    box-shadow:var(--shadow-lg);
    display:none;
    gap:4px;
    margin:0;
  }
  .main-nav.open{display:flex;animation:slideDown .3s ease}
  @keyframes slideDown{
    from{opacity:0;transform:translateY(-12px)}
    to{opacity:1;transform:translateY(0)}
  }
  .nav-link{
    padding:12px 16px;
    font-size:15px;
    border-radius:10px;
  }
  .nav-toggle{
    display:inline-flex;
  }
  .header-actions .btn{display:none}
  .page-hero{padding:140px 0 80px}
  .page-hero h1{font-size:2.2rem}
  .page-hero .hero-desc{font-size:1rem}
  .section-header h2{font-size:1.8rem}
  .section-header p{font-size:.95rem}
  .flow-step{padding:20px 0}
  .step-num{width:40px;height:40px;font-size:1rem;border-radius:11px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-section{padding:64px 0}
  .cta-box h2{font-size:1.8rem}
  .cta-box p{font-size:.95rem}
}

@media (max-width:520px){
  .container{padding:0 18px}
  .section{padding:44px 0}
  .page-hero{padding:120px 0 60px}
  .page-hero h1{font-size:1.75rem}
  .hero-actions .btn{
    width:100%;
    margin-bottom:8px;
  }
  .security-features .cell{flex:0 0 100%}
  .feature-card{padding:26px 22px}
  .flow-step{
    flex-direction:column;
    gap:12px;
  }
  .flow-step:hover{transform:none}
  .knowledge-body{padding:20px 18px}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:12px}
  .stat-number{font-size:1.9rem}
  .stat-item{padding:20px 12px}
  .stat-label{font-size:.82rem}
  .faq-question{
    padding:18px 18px;
    font-size:.95rem;
    line-height:1.4;
  }
  .faq-answer-inner{padding:0 18px 20px;font-size:.88rem}
  .cta-section{padding:48px 0}
  .cta-box h2{font-size:1.5rem}
  .cta-box p{font-size:.9rem}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .site-header .btn-primary{display:none}
}

/* roulang page: category3 */
/* ============ 设计变量 ============ */
        :root {
            --primary: #1a56db;
            --primary-dark: #1443a8;
            --primary-light: #e8f0fe;
            --accent: #0ea5a0;
            --accent-light: #e2f7f5;
            --bg: #f7f8fc;
            --bg-white: #ffffff;
            --bg-dark: #0f172a;
            --text: #1e293b;
            --text-light: #64748b;
            --text-lighter: #94a3b8;
            --border: #e2e8f0;
            --border-light: #ecf1f7;
            --radius: 16px;
            --radius-lg: 24px;
            --radius-sm: 10px;
            --shadow-sm: 0 2px 8px rgba(15, 23, 42, .06);
            --shadow: 0 6px 24px rgba(15, 23, 42, .08);
            --shadow-lg: 0 16px 44px rgba(15, 23, 42, .12);
            --transition: .25s cubic-bezier(.4, 0, .2, 1);
            --spacing-section: 96px;
            --spacing-section-sm: 64px;
        }

        /* ============ 基础 Reset / Base ============ */
        *,
        *::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", "Helvetica Neue", Arial, sans-serif;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            font-size: 16px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition);
        }
        ul,
        ol,
        li {
            list-style: none;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ============ 导航 Header ============ */
        .site-header {
            background: rgba(255, 255, 255, .92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-light);
            position: sticky;
            top: 0;
            z-index: 999;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 20px;
        }
        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--text);
            letter-spacing: .5px;
            white-space: nowrap;
        }
        .brand .logo-dot {
            width: 38px;
            height: 38px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: .95rem;
            box-shadow: 0 4px 12px rgba(26, 86, 219, .25);
        }
        .brand span {
            color: var(--primary);
        }
        .header-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            flex: 1;
            justify-content: center;
        }
        .header-nav .nav-link {
            padding: 8px 16px;
            border-radius: 10px;
            font-size: .95rem;
            font-weight: 500;
            color: var(--text-light);
            transition: all var(--transition);
            white-space: nowrap;
            position: relative;
        }
        .header-nav .nav-link:hover {
            color: var(--primary);
            background: var(--primary-light);
        }
        .header-nav .nav-link.active {
            color: var(--primary);
            background: var(--primary-light);
            font-weight: 600;
        }
        .header-nav .nav-link.active::after {
            content: "";
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            border-radius: 3px;
            background: var(--primary);
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .search-box {
            display: flex;
            align-items: center;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 12px;
            padding: 6px 14px;
            gap: 8px;
            width: 220px;
            transition: all var(--transition);
        }
        .search-box:hover,
        .search-box:focus-within {
            border-color: var(--primary);
            background: #fff;
            box-shadow: 0 0 0 3px rgba(26, 86, 219, .08);
        }
        .search-box i {
            color: var(--text-lighter);
            font-size: .85rem;
        }
        .search-box input {
            border: none;
            outline: none;
            background: transparent;
            font-size: .88rem;
            width: 100%;
            color: var(--text);
        }
        .btn-header {
            background: var(--primary);
            color: #fff;
            border: none;
            padding: 9px 20px;
            border-radius: 12px;
            font-size: .9rem;
            font-weight: 600;
            cursor: pointer;
            transition: all var(--transition);
            box-shadow: 0 4px 14px rgba(26, 86, 219, .22);
        }
        .btn-header:hover {
            background: var(--primary-dark);
            transform: translateY(-1px);
            box-shadow: 0 6px 18px rgba(26, 86, 219, .3);
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.4rem;
            color: var(--text);
            cursor: pointer;
            padding: 4px;
        }

        /* ============ Banner 页面横幅 ============ */
        .page-banner {
            position: relative;
            padding: 100px 0 80px;
            background: linear-gradient(135deg, rgba(15, 23, 42, .82), rgba(26, 86, 219, .75)),
                url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            color: #fff;
            overflow: hidden;
        }
        .page-banner::after {
            content: "";
            position: absolute;
            bottom: -40px;
            right: -30px;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(255, 255, 255, .06);
        }
        .banner-content {
            position: relative;
            z-index: 2;
            max-width: 760px;
        }
        .banner-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, .15);
            border: 1px solid rgba(255, 255, 255, .25);
            padding: 6px 16px;
            border-radius: 30px;
            font-size: .82rem;
            letter-spacing: 1px;
            margin-bottom: 22px;
            backdrop-filter: blur(8px);
        }
        .banner-content h1 {
            font-size: 2.6rem;
            line-height: 1.25;
            font-weight: 800;
            margin-bottom: 18px;
            letter-spacing: 1px;
        }
        .banner-content p {
            font-size: 1.08rem;
            color: rgba(255, 255, 255, .88);
            line-height: 1.8;
            max-width: 640px;
        }
        .banner-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 18px;
            margin-top: 30px;
            font-size: .88rem;
            color: rgba(255, 255, 255, .75);
        }
        .banner-meta i {
            margin-right: 5px;
        }

        /* ============ 资讯简介区 ============ */
        .section {
            padding: var(--spacing-section) 0;
        }
        .section-sm {
            padding: var(--spacing-section-sm) 0;
        }
        .section-bg-white {
            background: var(--bg-white);
        }
        .section-bg-light {
            background: var(--bg);
        }
        .section-head {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 52px;
        }
        .section-head .eyebrow {
            display: inline-block;
            font-size: .8rem;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-light);
            padding: 6px 16px;
            border-radius: 30px;
            letter-spacing: 1px;
            margin-bottom: 14px;
        }
        .section-head h2 {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text);
            line-height: 1.3;
            margin-bottom: 12px;
        }
        .section-head p {
            color: var(--text-light);
            font-size: 1rem;
            line-height: 1.75;
        }

        /* ============ 资讯介绍图文块 ============ */
        .intro-wrap {
            display: grid;
            grid-template-columns: 1.1fr 1fr;
            gap: 60px;
            align-items: center;
        }
        .intro-image {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }
        .intro-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 360px;
        }
        .intro-image::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(15, 23, 42, .18), transparent 40%);
        }
        .intro-text h3 {
            font-size: 1.55rem;
            font-weight: 700;
            line-height: 1.4;
            margin-bottom: 16px;
            color: var(--text);
        }
        .intro-text h3 span {
            color: var(--primary);
        }
        .intro-text p {
            color: var(--text-light);
            line-height: 1.8;
            margin-bottom: 16px;
            font-size: .98rem;
        }
        .intro-points {
            margin-top: 24px;
            display: grid;
            gap: 14px;
        }
        .intro-point {
            display: flex;
            gap: 12px;
            align-items: flex-start;
            padding: 14px 16px;
            border-radius: var(--radius-sm);
            background: var(--bg);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .intro-point:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-sm);
        }
        .intro-point i {
            color: var(--primary);
            font-size: 1.1rem;
            margin-top: 3px;
            width: 32px;
            height: 32px;
            flex-shrink: 0;
            background: var(--primary-light);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .intro-point strong {
            display: block;
            font-size: .95rem;
            color: var(--text);
            margin-bottom: 2px;
        }
        .intro-point span {
            font-size: .85rem;
            color: var(--text-light);
            line-height: 1.5;
        }

        /* ============ 最新动态卡片网格 ============ */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .news-card {
            background: var(--bg-white);
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .news-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }
        .news-card-cover {
            height: 200px;
            overflow: hidden;
            position: relative;
        }
        .news-card-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }
        .news-card:hover .news-card-cover img {
            transform: scale(1.05);
        }
        .news-card-cover .cat-badge {
            position: absolute;
            top: 14px;
            left: 14px;
            background: rgba(255, 255, 255, .92);
            color: var(--primary);
            font-size: .75rem;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 30px;
            backdrop-filter: blur(4px);
            box-shadow: 0 2px 8px rgba(0, 0, 0, .08);
        }
        .news-card-body {
            padding: 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .news-card-body .meta {
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: .8rem;
            color: var(--text-lighter);
            margin-bottom: 12px;
        }
        .news-card-body .meta i {
            margin-right: 4px;
        }
        .news-card-body h3 {
            font-size: 1.1rem;
            font-weight: 700;
            line-height: 1.45;
            margin-bottom: 10px;
        }
        .news-card-body h3 a {
            color: var(--text);
            transition: color var(--transition);
        }
        .news-card-body h3 a:hover {
            color: var(--primary);
        }
        .news-card-body p {
            font-size: .88rem;
            color: var(--text-light);
            line-height: 1.7;
            margin-bottom: 16px;
            flex: 1;
        }
        .news-card-body .card-link {
            font-size: .88rem;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .news-card-body .card-link i {
            transition: transform var(--transition);
        }
        .news-card-body .card-link:hover i {
            transform: translateX(4px);
        }

        /* ============ 平台公告列表区 ============ */
        .announcement-wrap {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: start;
        }
        .announcement-panel {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 36px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow);
        }
        .announcement-panel .panel-title {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 24px;
        }
        .announcement-panel .panel-title .icon-wrap {
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
        }
        .announcement-panel .panel-title h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text);
        }
        .announcement-list li {
            padding: 16px 0;
            border-bottom: 1px solid var(--border-light);
            display: flex;
            gap: 16px;
            align-items: flex-start;
            transition: all var(--transition);
        }
        .announcement-list li:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }
        .announcement-list li:hover .a-title {
            color: var(--primary);
        }
        .announcement-list .a-date {
            font-size: .78rem;
            color: var(--text-lighter);
            background: var(--bg);
            border: 1px solid var(--border-light);
            border-radius: 8px;
            padding: 4px 10px;
            white-space: nowrap;
            margin-top: 2px;
        }
        .announcement-list .a-content .a-title {
            font-size: .95rem;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 4px;
            transition: color var(--transition);
            line-height: 1.4;
        }
        .announcement-list .a-content p {
            font-size: .84rem;
            color: var(--text-light);
            line-height: 1.6;
        }

        /* ============ 版本时间线 ============ */
        .timeline-wrap {
            max-width: 860px;
            margin: 0 auto;
            position: relative;
            padding: 20px 0;
        }
        .timeline-wrap::before {
            content: "";
            position: absolute;
            left: 50%;
            top: 0;
            bottom: 0;
            width: 2px;
            background: var(--border);
            transform: translateX(-50%);
        }
        .timeline-item {
            position: relative;
            width: 50%;
            padding: 0 40px 44px;
        }
        .timeline-item:nth-child(odd) {
            left: 0;
            text-align: right;
        }
        .timeline-item:nth-child(even) {
            left: 50%;
            text-align: left;
        }
        .timeline-item .timeline-dot {
            position: absolute;
            width: 16px;
            height: 16px;
            background: var(--primary);
            border: 3px solid #fff;
            border-radius: 50%;
            box-shadow: 0 0 0 4px var(--primary-light);
            top: 8px;
        }
        .timeline-item:nth-child(odd) .timeline-dot {
            right: -8px;
        }
        .timeline-item:nth-child(even) .timeline-dot {
            left: -8px;
        }
        .timeline-card {
            background: var(--bg-white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius);
            padding: 24px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            display: inline-block;
            text-align: left;
            max-width: 100%;
        }
        .timeline-card:hover {
            box-shadow: var(--shadow);
            transform: translateY(-4px);
        }
        .timeline-card .tl-version {
            font-size: .78rem;
            font-weight: 700;
            color: var(--primary);
            background: var(--primary-light);
            padding: 4px 12px;
            border-radius: 20px;
            display: inline-block;
            margin-bottom: 12px;
        }
        .timeline-card h4 {
            font-size: 1.02rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text);
        }
        .timeline-card p {
            font-size: .86rem;
            color: var(--text-light);
            line-height: 1.6;
        }

        /* ============ FAQ ============ */
        .faq-wrap {
            max-width: 820px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius);
            margin-bottom: 16px;
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-sm);
        }
        .faq-item summary {
            padding: 22px 26px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            list-style: none;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary::after {
            content: "\f078";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            font-size: .78rem;
            color: var(--text-lighter);
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-item[open] summary::after {
            transform: rotate(180deg);
        }
        .faq-item .faq-body {
            padding: 0 26px 22px;
            color: var(--text-light);
            line-height: 1.75;
            font-size: .92rem;
        }

        /* ============ CTA 区块 ============ */
        .cta-section {
            padding: 72px 0;
            position: relative;
            background: linear-gradient(135deg, var(--primary-dark), var(--primary) 55%, var(--accent));
            border-radius: var(--radius-lg);
            color: #fff;
            text-align: center;
            overflow: hidden;
            margin: 0 auto;
            max-width: 1200px;
        }
        .cta-section::before {
            content: "";
            position: absolute;
            top: -60px;
            right: -40px;
            width: 220px;
            height: 220px;
            border-radius: 50%;
            background: rgba(255, 255, 255, .08);
        }
        .cta-section::after {
            content: "";
            position: absolute;
            bottom: -70px;
            left: -50px;
            width: 260px;
            height: 260px;
            border-radius: 50%;
            background: rgba(255, 255, 255, .06);
        }
        .cta-content {
            position: relative;
            z-index: 2;
            max-width: 660px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .cta-content h2 {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 14px;
        }
        .cta-content p {
            font-size: 1rem;
            color: rgba(255, 255, 255, .88);
            margin-bottom: 30px;
            line-height: 1.7;
        }
        .cta-actions {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .btn-cta-white {
            background: #fff;
            color: var(--primary);
            padding: 13px 30px;
            border-radius: 14px;
            font-weight: 700;
            border: none;
            cursor: pointer;
            font-size: .95rem;
            transition: all var(--transition);
            box-shadow: 0 8px 24px rgba(0, 0, 0, .12);
        }
        .btn-cta-white:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 30px rgba(0, 0, 0, .16);
            color: var(--primary-dark);
        }
        .btn-cta-ghost {
            background: transparent;
            border: 2px solid rgba(255, 255, 255, .7);
            color: #fff;
            padding: 11px 28px;
            border-radius: 14px;
            font-weight: 600;
            cursor: pointer;
            font-size: .95rem;
            transition: all var(--transition);
        }
        .btn-cta-ghost:hover {
            background: rgba(255, 255, 255, .12);
            border-color: #fff;
            transform: translateY(-2px);
        }

        /* ============ 页脚 ============ */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, .7);
            padding: 70px 0 0;
            margin-top: 40px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 50px;
            border-bottom: 1px solid rgba(255, 255, 255, .08);
        }
        .footer-brand .brand {
            color: #fff;
            margin-bottom: 16px;
            display: inline-flex;
        }
        .footer-brand .brand span {
            color: #7da2ff;
        }
        .footer-brand p {
            font-size: .88rem;
            line-height: 1.8;
            color: rgba(255, 255, 255, .55);
            max-width: 340px;
            margin-bottom: 20px;
        }
        .footer-social {
            display: flex;
            gap: 10px;
        }
        .footer-social a {
            width: 38px;
            height: 38px;
            border-radius: 12px;
            background: rgba(255, 255, 255, .08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, .7);
            transition: all var(--transition);
        }
        .footer-social a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-3px);
        }
        .footer-col h4 {
            font-size: .95rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 18px;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul a {
            font-size: .87rem;
            color: rgba(255, 255, 255, .55);
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .footer-col ul a:hover {
            color: #fff;
            padding-left: 4px;
        }
        .footer-bottom {
            padding: 22px 0;
            text-align: center;
            font-size: .82rem;
            color: rgba(255, 255, 255, .42);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, .6);
        }
        .footer-bottom a:hover {
            color: #fff;
        }

        /* ============ 响应式断点 ============ */
        @media (max-width: 1024px) {
            .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 40px;
            }
            .announcement-wrap {
                grid-template-columns: 1fr;
            }
            .intro-wrap {
                grid-template-columns: 1fr;
                gap: 40px;
            }
        }
        @media (max-width: 768px) {
            :root {
                --spacing-section: 64px;
                --spacing-section-sm: 44px;
            }
            .header-inner {
                height: 64px;
                flex-wrap: wrap;
            }
            .search-box {
                display: none;
            }
            .header-nav {
                display: none;
                position: absolute;
                top: 64px;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                padding: 16px 24px;
                border-bottom: 1px solid var(--border-light);
                box-shadow: var(--shadow);
                align-items: flex-start;
                gap: 4px;
            }
            .header-nav.open {
                display: flex;
            }
            .header-nav .nav-link {
                width: 100%;
                padding: 12px 14px;
            }
            .nav-toggle {
                display: block;
            }
            .banner-content h1 {
                font-size: 2rem;
            }
            .page-banner {
                padding: 72px 0 56px;
            }
            .news-grid {
                grid-template-columns: 1fr;
            }
            .timeline-wrap::before {
                left: 8px;
            }
            .timeline-item {
                width: 100%;
                left: 0 !important;
                text-align: left !important;
                padding: 0 0 30px 36px;
            }
            .timeline-item .timeline-dot {
                left: 0 !important;
                right: auto !important;
            }
            .cta-section {
                margin: 0 16px;
                padding: 56px 0;
            }
            .cta-content h2 {
                font-size: 1.6rem;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .header-actions .btn-header {
                display: none;
            }
            .brand {
                font-size: 1.08rem;
            }
            .brand .logo-dot {
                width: 32px;
                height: 32px;
                font-size: .8rem;
            }
            .section-head h2 {
                font-size: 1.5rem;
            }
            .banner-content h1 {
                font-size: 1.6rem;
            }
            .announcement-panel {
                padding: 24px;
            }
        }