/* roulang page: index */
:root{
  --bg-body:#f1f5f9;--bg-sidebar:#0b1220;--bg-card:#ffffff;--bg-dark:#0b1220;--bg-section:#f7fafc;
  --primary:#f97316;--primary-dark:#c2410c;--accent:#ef4444;--success:#10b981;
  --text-1:#0f172a;--text-2:#475569;--text-3:#94a3b8;--text-inv:#f1f5f9;
  --border:#e2e8f0;--radius:16px;--radius-sm:8px;
  --shadow-sm:0 1px 3px rgba(15,23,42,.06);--shadow-md:0 8px 30px rgba(15,23,42,.08);--shadow-lg:0 16px 40px rgba(15,23,42,.14);
  --font:'PingFang SC','Microsoft YaHei','Segoe UI',system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font);background:var(--bg-body);color:var(--text-1);line-height:1.6;font-size:16px}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit;transition:all .25s ease}
button{font-family:inherit;cursor:pointer;border:none;background:none}
ul,ol{list-style:none}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}
/* ===== Mobile Header ===== */
.mobile-header{display:none;position:fixed;top:0;left:0;right:0;height:64px;background:var(--bg-sidebar);z-index:200;align-items:center;justify-content:space-between;padding:0 20px;box-shadow:0 4px 18px rgba(0,0,0,.25)}
.mobile-header .brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:20px;letter-spacing:.5px}
.mobile-header .brand .dot{width:10px;height:10px;border-radius:50%;background:var(--primary);box-shadow:0 0 12px var(--primary)}
.menu-toggle{width:42px;height:42px;border-radius:10px;background:rgba(255,255,255,.1);display:flex;align-items:center;justify-content:center;color:#fff;font-size:20px;transition:.25s}
.menu-toggle:hover{background:rgba(255,255,255,.2)}
/* ===== Sidebar ===== */
.sidebar{position:fixed;top:0;left:0;bottom:0;width:280px;background:var(--bg-sidebar);z-index:150;display:flex;flex-direction:column;transition:transform .35s cubic-bezier(.25,.8,.25,1);box-shadow:2px 0 20px rgba(0,0,0,.15)}
.sidebar-inner{display:flex;flex-direction:column;height:100%;padding:32px 0 0}
.brand{display:flex;align-items:center;gap:12px;padding:0 28px;margin-bottom:42px}
.brand-dot{width:14px;height:14px;border-radius:50%;background:var(--primary);position:relative;flex-shrink:0;box-shadow:0 0 0 4px rgba(249,115,22,.2),0 0 20px rgba(249,115,22,.6)}
.brand-dot::after{content:'';position:absolute;top:-4px;right:-4px;width:7px;height:7px;background:var(--accent);border-radius:50%;border:2px solid var(--bg-sidebar)}
.brand-text{color:#fff;font-size:22px;font-weight:800;letter-spacing:1px;line-height:1.2}
.side-nav{flex:1;padding:0 16px;display:flex;flex-direction:column;gap:6px}
.nav-item{display:flex;align-items:center;gap:14px;padding:14px 18px;border-radius:12px;color:#94a3b8;font-size:15px;font-weight:500;position:relative;transition:all .25s ease}
.nav-item i{width:20px;text-align:center;font-size:17px}
.nav-item:hover{background:rgba(255,255,255,.06);color:#e2e8f0;transform:translateX(3px)}
.nav-item.active{background:linear-gradient(135deg,rgba(249,115,22,.2),rgba(239,68,68,.08));color:#fff;font-weight:600}
.nav-item.active::before{content:'';position:absolute;left:0;top:20%;bottom:20%;width:4px;border-radius:0 4px 4px 0;background:var(--primary);box-shadow:0 0 12px var(--primary)}
.sidebar-footer{padding:24px 28px;border-top:1px solid rgba(255,255,255,.08);display:flex;align-items:center;gap:10px;color:#64748b;font-size:13px}
.status-dot{width:8px;height:8px;border-radius:50%;background:var(--success);box-shadow:0 0 8px var(--success);animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.5}}
.sidebar-footer small{color:#475569;margin-left:auto}
.sidebar-overlay{display:none;position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:140;backdrop-filter:blur(4px)}
/* ===== Main ===== */
.main{margin-left:280px;min-height:100vh;display:flex;flex-direction:column}
/* ===== Hero ===== */
.hero{position:relative;padding:120px 0 110px;overflow:hidden;background:var(--bg-dark);isolation:isolate}
.hero::before{content:'';position:absolute;inset:0;background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;z-index:-2;opacity:.25}
.hero::after{content:'';position:absolute;inset:0;background:linear-gradient(120deg,rgba(11,18,32,.96) 30%,rgba(11,18,32,.75) 60%,rgba(249,115,22,.15) 100%);z-index:-1}
.hero .container{max-width:980px}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:rgba(249,115,22,.15);border:1px solid rgba(249,115,22,.35);color:#fdba74;padding:8px 18px;border-radius:50px;font-size:14px;font-weight:500;letter-spacing:.5px;margin-bottom:28px}
.hero-badge i{font-size:14px}
.hero h1{font-size:clamp(42px,6vw,72px);font-weight:900;color:var(--text-inv);line-height:1.1;letter-spacing:-1px;margin-bottom:18px}
.hero h1 .hl{background:linear-gradient(120deg,var(--primary),#fb923c);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;color:transparent}
.hero p{font-size:clamp(16px,2vw,20px);color:#cbd5e1;line-height:1.8;max-width:620px;margin-bottom:36px}
.hero-actions{display:flex;flex-wrap:wrap;gap:16px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:14px 30px;border-radius:12px;font-size:15px;font-weight:600;transition:all .3s cubic-bezier(.25,.8,.25,1);border:2px solid transparent}
.btn i{font-size:16px}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 8px 24px rgba(249,115,22,.3)}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:0 14px 34px rgba(249,115,22,.4)}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.25);color:#e2e8f0}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px)}
.btn-light{background:#fff;color:var(--text-1);box-shadow:var(--shadow-md)}
.btn-light:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}
.hero-stats{display:flex;flex-wrap:wrap;gap:40px;margin-top:60px;padding-top:36px;border-top:1px solid rgba(255,255,255,.1)}
.hero-stats .hs-num{font-size:28px;font-weight:800;color:#fff;display:flex;align-items:baseline;gap:4px}
.hero-stats .hs-num span{color:var(--primary);font-size:20px}
.hero-stats .hs-label{font-size:13px;color:#64748b;margin-top:4px;letter-spacing:.5px}
/* ===== Section ===== */
.section{padding:96px 0}
.section-head{text-align:center;max-width:640px;margin:0 auto 56px}
.section-kicker{display:inline-block;font-size:13px;font-weight:700;color:var(--primary);letter-spacing:2px;text-transform:uppercase;margin-bottom:12px;background:rgba(249,115,22,.08);padding:6px 16px;border-radius:20px}
.section-title{font-size:clamp(26px,3vw,38px);font-weight:800;line-height:1.25;letter-spacing:-.5px;color:var(--text-1)}
.section-sub{font-size:16px;color:var(--text-2);margin-top:14px;line-height:1.7}
.section-more{display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-size:14px;font-weight:600;margin-top:18px}
.section-more:hover{gap:12px}
/* ===== Feature ===== */
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:32px}
.feature-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:40px 32px;transition:all .35s cubic-bezier(.25,.8,.25,1);position:relative;overflow:hidden}
.feature-card::before{content:'';position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,var(--primary),var(--accent));opacity:0;transition:.3s}
.feature-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg);border-color:transparent}
.feature-card:hover::before{opacity:1}
.feature-icon{width:64px;height:64px;border-radius:16px;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,rgba(249,115,22,.12),rgba(239,68,68,.08));color:var(--primary);font-size:26px;margin-bottom:22px}
.feature-card h3{font-size:19px;font-weight:700;margin-bottom:10px}
.feature-card p{font-size:14px;color:var(--text-2);line-height:1.75}
.feature-card .feat-tag{display:inline-block;margin-top:16px;font-size:12px;font-weight:600;color:var(--primary);background:rgba(249,115,22,.08);padding:4px 12px;border-radius:20px}
/* ===== Cat Grid ===== */
.cat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:32px}
.cat-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;transition:all .35s ease;display:flex;flex-direction:column}
.cat-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg)}
.cat-card-img{position:relative;height:200px;overflow:hidden}
.cat-card-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.cat-card:hover .cat-card-img img{transform:scale(1.06)}
.cat-card-img::after{content:'';position:absolute;inset:0;background:linear-gradient(to top,rgba(11,18,32,.55),transparent)}
.cat-card-body{padding:28px;flex:1;display:flex;flex-direction:column}
.cat-card-body h3{font-size:19px;font-weight:700;margin-bottom:8px}
.cat-card-body p{font-size:14px;color:var(--text-2);line-height:1.7;flex:1}
.cat-link{display:inline-flex;align-items:center;gap:8px;margin-top:20px;font-size:14px;font-weight:600;color:var(--primary)}
.cat-link:hover{gap:14px;color:var(--primary-dark)}
/* ===== Stats ===== */
.stats-section{background:var(--bg-dark);position:relative;overflow:hidden;padding:90px 0}
.stats-section::before{content:'';position:absolute;inset:0;background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;opacity:.12}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:30px;position:relative;z-index:1}
.stat-item{text-align:center;padding:30px 20px;border-radius:var(--radius);background:rgba(255,255,255,.03);border:1px solid rgba(255,255,255,.08);transition:.3s}
.stat-item:hover{background:rgba(255,255,255,.06);transform:translateY(-4px)}
.stat-num{font-size:38px;font-weight:800;color:#fff;line-height:1.2}
.stat-num i{font-style:normal;color:var(--primary);font-size:26px}
.stat-label{font-size:14px;color:#64748b;margin-top:8px;letter-spacing:.5px}
/* ===== News ===== */
.news-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;max-width:1020px;margin:0 auto}
.news-item{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:28px;transition:all .3s ease;position:relative;overflow:hidden}
.news-item::before{content:'';position:absolute;left:0;top:0;bottom:0;width:4px;background:var(--primary);opacity:0;transition:.3s}
.news-item:hover{box-shadow:var(--shadow-md);border-color:transparent;transform:translateY(-3px)}
.news-item:hover::before{opacity:1}
.news-top{display:flex;align-items:center;gap:10px;margin-bottom:12px}
.badge{display:inline-block;padding:4px 12px;border-radius:20px;font-size:12px;font-weight:600;background:rgba(249,115,22,.1);color:var(--primary)}
.news-date{font-size:12px;color:var(--text-3)}
.news-item h3{font-size:17px;font-weight:700;margin-bottom:8px;line-height:1.5}
.news-item p{font-size:14px;color:var(--text-2);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.empty-tip{grid-column:1/-1;text-align:center;padding:60px 20px;background:var(--bg-card);border:1px dashed var(--border);border-radius:var(--radius);color:var(--text-3);font-size:15px}
/* ===== Steps ===== */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:36px;position:relative;counter-reset:step}
.step-item{text-align:center;padding:30px;position:relative}
.step-item::before{counter-increment:step;content:counter(step);position:absolute;top:-10px;left:50%;transform:translateX(-50%);width:44px;height:44px;background:var(--primary);color:#fff;font-size:18px;font-weight:800;border-radius:50%;display:flex;align-items:center;justify-content:center;box-shadow:0 8px 20px rgba(249,115,22,.3);border:4px solid var(--bg-body)}
.step-icon{font-size:38px;color:var(--primary);margin-bottom:16px;margin-top:20px}
.step-item h3{font-size:18px;font-weight:700;margin-bottom:10px}
.step-item p{font-size:14px;color:var(--text-2);line-height:1.7}
/* ===== FAQ ===== */
.faq{max-width:820px;margin:0 auto}
.faq-item{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);margin-bottom:14px;overflow:hidden;transition:.3s}
.faq-item:hover{border-color:var(--primary)}
.faq-q{display:flex;align-items:center;gap:14px;padding:22px 26px;cursor:pointer;font-size:16px;font-weight:600}
.faq-q i{color:var(--primary);font-size:18px;flex-shrink:0}
.faq-q .arrow{margin-left:auto;color:var(--text-3);transition:transform .3s}
.faq-item.open .faq-q .arrow{transform:rotate(90deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease,padding .3s;padding:0 26px;color:var(--text-2);font-size:14px;line-height:1.8}
.faq-item.open .faq-a{max-height:300px;padding:0 26px 24px}
/* ===== CTA ===== */
.cta-section{padding:90px 0;background:var(--bg-body)}
.cta-box{position:relative;background:var(--bg-dark);border-radius:24px;padding:70px 50px;text-align:center;overflow:hidden;isolation:isolate}
.cta-box::before{content:'';position:absolute;inset:0;background:url('/assets/images/backpic/back-3.png') center/cover no-repeat;opacity:.15;z-index:-1}
.cta-box::after{content:'';position:absolute;inset:0;background:linear-gradient(120deg,rgba(249,115,22,.1),transparent);z-index:-1}
.cta-title{font-size:clamp(28px,4vw,42px);font-weight:800;color:#fff;margin-bottom:14px}
.cta-text{font-size:16px;color:#94a3b8;max-width:560px;margin:0 auto 30px;line-height:1.8}
.cta-actions{display:flex;justify-content:center;gap:16px;flex-wrap:wrap}
/* ===== Footer ===== */
.footer{background:var(--bg-sidebar);padding:56px 0 24px}
.footer-inner{display:flex;align-items:flex-start;justify-content:space-between;gap:40px;flex-wrap:wrap;padding-bottom:36px;border-bottom:1px solid rgba(255,255,255,.08)}
.footer-brand .brand-str{color:#fff;font-size:24px;font-weight:800;display:flex;align-items:center;gap:10px}
.footer-brand .brand-str .fd{width:12px;height:12px;border-radius:50%;background:var(--primary);box-shadow:0 0 12px var(--primary)}
.footer-brand p{color:#64748b;font-size:14px;margin-top:12px;max-width:280px;line-height:1.7}
.footer-links{display:flex;gap:60px;flex-wrap:wrap}
.footer-links h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px}
.footer-links ul li{margin-bottom:10px}
.footer-links ul li a{color:#64748b;font-size:14px}
.footer-links ul li a:hover{color:var(--primary)}
.footer-copy{text-align:center;padding-top:24px;color:#475569;font-size:13px;line-height:2}
.footer-copy a{color:#64748b}
.footer-copy a:hover{color:var(--primary)}
/* ===== Inner Page Hero ===== */
.page-hero{position:relative;background:var(--bg-dark);padding:90px 0 66px;overflow:hidden;isolation:isolate}
.page-hero::before{content:'';position:absolute;inset:0;background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;opacity:.2;z-index:-1}
.page-hero::after{content:'';position:absolute;inset:0;background:linear-gradient(120deg,rgba(11,18,32,.96) 30%,rgba(11,18,32,.7) 70%,rgba(249,115,22,.2) 100%);z-index:-1}
.page-hero h1{font-size:clamp(30px,4vw,44px);font-weight:800;color:#fff;margin-bottom:12px}
.page-hero p{color:#94a3b8;font-size:16px;max-width:600px;line-height:1.8}
.breadcrumb{display:flex;flex-wrap:wrap;gap:8px;font-size:13px;color:#64748b;margin-top:18px;align-items:center}
.breadcrumb a{color:#94a3b8}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:#475569}
.breadcrumb .current{color:var(--primary)}
/* ===== Article ===== */
.article-main{padding:56px 0;max-width:860px;margin:0 auto}
.article-header{margin-bottom:36px}
.article-header h1{font-size:clamp(26px,4vw,36px);font-weight:800;line-height:1.35;margin:18px 0 14px}
.article-meta{display:flex;flex-wrap:wrap;gap:18px;align-items:center;font-size:13px;color:var(--text-3);padding-bottom:20px;border-bottom:1px solid var(--border)}
.article-meta i{margin-right:5px;color:var(--primary)}
.article-body{font-size:16px;line-height:1.95;color:var(--text-2)}
.article-body p{margin-bottom:20px}
.article-body h2{margin:36px 0 16px;font-size:24px;font-weight:700;color:var(--text-1)}
.article-body h3{margin:28px 0 14px;font-size:19px;font-weight:700;color:var(--text-1)}
.article-body img{border-radius:var(--radius);margin:24px 0}
.article-body ul,.article-body ol{padding-left:8px;margin-bottom:20px}
.article-body ul li,.article-body ol li{padding-left:18px;position:relative;margin-bottom:10px}
.article-body ul li::before{content:'▶';position:absolute;left:0;top:0;color:var(--primary);font-size:12px}
.article-body ol{counter-reset:ol}
.article-body ol li{counter-increment:ol}
.article-body ol li::before{content:counter(ol) '.';color:var(--primary);font-weight:700}
.article-body blockquote{border-left:4px solid var(--primary);background:rgba(249,115,22,.06);padding:16px 24px;border-radius:0 12px 12px 0;margin:24px 0;font-style:italic;color:var(--text-2)}
.not-found{text-align:center;padding:80px 20px;background:var(--bg-card);border-radius:var(--radius);border:1px dashed var(--border)}
.not-found i{font-size:56px;color:var(--text-3);margin-bottom:20px}
.not-found h2{font-size:24px;font-weight:700;margin-bottom:12px}
.not-found p{color:var(--text-2);margin-bottom:20px}
/* ===== Related ===== */
.related-list{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.related-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:22px;transition:.3s}
.related-card:hover{border-color:var(--primary);transform:translateY(-3px);box-shadow:var(--shadow-md)}
.related-card h4{font-size:15px;font-weight:600;line-height:1.5;margin-bottom:8px}
.related-card h4 a:hover{color:var(--primary)}
.related-card .rc-date{font-size:12px;color:var(--text-3)}
/* ===== Category Content ===== */
.cat-content{padding:64px 0}
.cat-desc-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;padding:0 40px 0 0}
.cat-desc-grid img{height:100%;object-fit:cover}
.cat-desc-body h2{font-size:24px;font-weight:800;margin-bottom:14px}
.cat-desc-body p{font-size:14px;color:var(--text-2);line-height:1.8;margin-bottom:14px}
.cat-check-list li{display:flex;align-items:flex-start;gap:12px;padding:10px 0;font-size:14px;color:var(--text-2)}
.cat-check-list li i{color:var(--success);margin-top:4px;flex-shrink:0}
/* ===== Status Bar ===== */
.status-bar{display:flex;flex-wrap:wrap;gap:20px;align-items:center;justify-content:space-between;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:18px 24px;margin-top:40px}
.status-bar .sb-left{display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.status-bar .sb-item{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-2)}
.status-bar .sb-item .point{width:8px;height:8px;border-radius:50%;background:var(--success);box-shadow:0 0 8px var(--success)}
.status-bar .sb-item .point.warn{background:#f59e0b}
.status-bar .sb-tag{font-size:13px;font-weight:600;color:var(--primary);background:rgba(249,115,22,.08);padding:6px 14px;border-radius:20px}
/* ===== Responsive ===== */
@media(max-width:1024px){
  .feature-grid,.cat-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:1fr 1fr}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .cat-desc-grid{grid-template-columns:1fr;padding:0}
  .cat-desc-grid img{height:240px}
}
@media(max-width:768px){
  .sidebar{transform:translateX(-100%)}
  .sidebar.open{transform:translateX(0)}
  .mobile-header{display:flex}
  .sidebar-overlay.show{display:block}
  .main{margin-left:0}
  .hero{padding:110px 0 80px}
  .hero-stats{gap:24px}
  .news-grid{grid-template-columns:1fr}
  .related-list{grid-template-columns:1fr 1fr}
  .section{padding:64px 0}
  .footer-inner{flex-direction:column;gap:32px}
  .footer-links{gap:30px}
  .feature-grid,.cat-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
}
@media(max-width:520px){
  .container{padding:0 16px}
  .hero-actions{flex-direction:column;width:100%}
  .hero-actions .btn{width:100%}
  .stats-grid{grid-template-columns:1fr 1fr;gap:14px}
  .stat-num{font-size:28px}
  .cta-box{padding:44px 22px}
  .related-list{grid-template-columns:1fr}
  .article-meta{gap:12px}
}
@media(max-width:360px){
  .stats-grid{grid-template-columns:1fr}
  .step-item{padding:20px}
}
:focus-visible{outline:3px solid rgba(249,115,22,.5);outline-offset:2px}

/* roulang page: article */
:root {
  --primary: #e63946;
  --primary-dark: #c02f3b;
  --primary-light: #ff6b76;
  --accent: #f4a261;
  --bg-dark: #0d1117;
  --bg-panel: #161b22;
  --bg-card: #1c2333;
  --bg-elev: #222a3a;
  --text-main: #e6edf3;
  --text-second: #9aa4b2;
  --text-dim: #6e7a89;
  --border: #2d3748;
  --border-light: #3a4a5f;
  --radius: 14px;
  --radius-sm: 8px;
  --shadow: 0 8px 30px rgba(0,0,0,.35);
  --shadow-sm: 0 4px 16px rgba(0,0,0,.22);
  --transition: all .28s cubic-bezier(.4,0,.2,1);
  --sidebar-w: 250px;
  --font-main: "PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:var(--font-main);background:var(--bg-dark);color:var(--text-main);line-height:1.75;min-height:100vh;-webkit-font-smoothing:antialiased}
a{color:var(--primary);text-decoration:none;transition:var(--transition)}
a:hover{color:var(--primary-light)}
img{max-width:100%;display:block}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
ul,ol{list-style:none}
input,textarea{font-family:inherit}
i{font-style:normal}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 28px}
.icon{width:20px;height:20px;display:inline-flex;align-items:center;justify-content:center}
.icon i,.icon svg{width:18px;height:18px}
.btn{display:inline-flex;align-items:center;gap:8px;padding:10px 22px;background:var(--primary);color:#fff;border-radius:8px;font-weight:600;font-size:14px;transition:var(--transition);border:1px solid transparent}
.btn:hover{background:var(--primary-dark);color:#fff;transform:translateY(-2px);box-shadow:0 6px 20px rgba(230,57,70,.35)}
.btn-outline{background:transparent;border-color:var(--border-light);color:var(--text-main)}
.btn-outline:hover{background:var(--border);color:#fff}
.btn-sm{padding:6px 14px;font-size:13px}
.btn-block{width:100%;justify-content:center}

/* App Shell Layout */
.app-shell{min-height:100vh;display:flex}
.sidebar{width:var(--sidebar-w);background:var(--bg-panel);border-right:1px solid var(--border);position:fixed;top:0;left:0;bottom:0;z-index:100;display:flex;flex-direction:column;transition:var(--transition)}
.sidebar-brand{display:flex;align-items:center;gap:12px;padding:22px 20px 20px;border-bottom:1px solid var(--border)}
.brand-icon{width:40px;height:40px;border-radius:10px;background:linear-gradient(135deg,var(--primary),var(--accent));display:flex;align-items:center;justify-content:center;flex-shrink:0;box-shadow:0 4px 14px rgba(230,57,70,.4)}
.brand-icon i{color:#fff;font-size:18px}
.brand-text .brand-name{font-size:17px;font-weight:800;line-height:1.2;background:linear-gradient(90deg,#fff,var(--accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.brand-text .brand-sub{font-size:11px;color:var(--text-dim);letter-spacing:.5px}
.sidebar-nav{flex:1;padding:18px 12px;overflow-y:auto}
.nav-section-title{font-size:11px;color:var(--text-dim);text-transform:uppercase;letter-spacing:1.5px;padding:10px 12px 8px;font-weight:600}
.nav-item{display:flex;align-items:center;gap:12px;padding:11px 14px;border-radius:10px;color:var(--text-second);font-size:14px;font-weight:500;margin-bottom:4px;position:relative;transition:var(--transition)}
.nav-item i{width:22px;text-align:center;font-size:15px;color:var(--text-dim);transition:var(--transition)}
.nav-item:hover{background:var(--bg-elev);color:var(--text-main);transform:translateX(2px)}
.nav-item:hover i{color:var(--primary-light)}
.nav-item.active{background:linear-gradient(90deg,rgba(230,57,70,.18),rgba(230,57,70,.05));color:#fff}
.nav-item.active i{color:var(--primary-light)}
.nav-item.active::before{content:'';position:absolute;left:0;top:50%;transform:translateY(-50%);width:3px;height:22px;background:var(--primary);border-radius:0 3px 3px 0}
.sidebar-bottom{padding:16px;border-top:1px solid var(--border)}
.sidebar-status{display:flex;align-items:center;gap:10px;padding:10px 12px;background:var(--bg-dark);border-radius:10px;border:1px solid var(--border)}
.status-dot{width:8px;height:8px;border-radius:50%;background:#22c55e;box-shadow:0 0 8px rgba(34,197,94,.6);animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.4}}
.status-text{font-size:12px;color:var(--text-second)}
.status-text strong{display:block;color:var(--text-main);font-size:12px}

.main-content{flex:1;margin-left:var(--sidebar-w);min-width:0;display:flex;flex-direction:column}

/* Topbar */
.topbar{display:flex;align-items:center;gap:14px;padding:16px 28px;background:rgba(13,17,23,.85);backdrop-filter:blur(12px);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:99}
.topbar-left{display:flex;align-items:center;gap:12px}
.topbar-tag{display:inline-flex;align-items:center;gap:6px;padding:4px 10px;background:rgba(230,57,70,.12);border:1px solid rgba(230,57,70,.3);color:var(--primary-light);border-radius:20px;font-size:12px;font-weight:600}
.topbar-tag i{font-size:12px}
.topbar-title{font-size:14px;color:var(--text-second);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:420px}
.topbar-actions{margin-left:auto;display:flex;align-items:center;gap:10px}

/* Breadcrumb */
.breadcrumb{padding:20px 0 4px;font-size:13px;color:var(--text-dim)}
.breadcrumb a{color:var(--text-second)}
.breadcrumb a:hover{color:var(--primary-light)}
.breadcrumb span{color:var(--text-dim);margin:0 8px}

/* Article Hero */
.article-hero{padding:40px 0 32px;position:relative}
.article-hero::before{content:'';position:absolute;inset:0;background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;opacity:.12;pointer-events:none}
.article-hero-inner{position:relative;z-index:1}
.article-cat{display:inline-flex;align-items:center;gap:6px;padding:5px 14px;background:rgba(230,57,70,.15);border:1px solid rgba(230,57,70,.35);border-radius:20px;color:var(--primary-light);font-size:13px;font-weight:600;margin-bottom:18px}
.article-cat i{font-size:12px}
.article-hero h1{font-size:32px;font-weight:800;line-height:1.35;margin-bottom:16px;letter-spacing:.5px}
.article-meta{display:flex;flex-wrap:wrap;gap:16px;color:var(--text-second);font-size:13px;align-items:center}
.meta-item{display:flex;align-items:center;gap:6px}
.meta-item i{color:var(--text-dim);font-size:13px}
.meta-dot{width:4px;height:4px;background:var(--text-dim);border-radius:50%}

/* Content Layout */
.article-layout{display:grid;grid-template-columns:1fr 320px;gap:32px;padding:24px 0 48px}
.article-main{min-width:0}
.article-body{background:var(--bg-panel);border:1px solid var(--border);border-radius:var(--radius);padding:40px;box-shadow:var(--shadow-sm)}
.article-cover{border-radius:var(--radius);overflow:hidden;margin-bottom:28px;position:relative}
.article-cover img{width:100%;height:340px;object-fit:cover;transition:transform .6s}
.article-cover:hover img{transform:scale(1.03)}
.article-cover-tag{position:absolute;top:14px;left:14px;background:rgba(230,57,70,.9);color:#fff;font-size:12px;padding:4px 12px;border-radius:20px;font-weight:600;backdrop-filter:blur(4px)}
.article-body-content{font-size:15px;line-height:1.9;color:var(--text-main)}
.article-body-content h2,.article-body-content h3{color:#fff;margin:28px 0 14px;font-weight:700;line-height:1.4}
.article-body-content h2{font-size:22px;padding-left:12px;border-left:3px solid var(--primary)}
.article-body-content h3{font-size:18px}
.article-body-content p{margin-bottom:16px;color:var(--text-second)}
.article-body-content strong{color:#fff;font-weight:600}
.article-body-content ul,.article-body-content ol{margin:0 0 16px;padding-left:22px;color:var(--text-second)}
.article-body-content ul li,.article-body-content ol li{margin-bottom:8px;position:relative;padding-left:6px}
.article-body-content ul li::before{content:'';display:inline-block;width:6px;height:6px;background:var(--primary);border-radius:50%;margin-right:8px;flex-shrink:0}
.article-body-content ol{list-style:decimal}
.article-body-content ol li{padding-left:0;list-style-type:decimal}
.article-body-content ol li::before{display:none}
.article-body-content blockquote{border-left:3px solid var(--primary);background:rgba(230,57,70,.06);padding:14px 20px;border-radius:0 8px 8px 0;margin:20px 0;color:var(--text-second);font-style:italic}
.article-body-content a{color:var(--primary-light);text-decoration:underline;text-underline-offset:3px}
.article-body-content img{border-radius:10px;margin:20px 0}
.article-body-content code{background:var(--bg-elev);padding:2px 8px;border-radius:5px;font-size:13px;color:var(--accent);font-family:ui-monospace,monospace;border:1px solid var(--border)}
.article-body-content .hl-box{background:var(--bg-elev);border:1px solid var(--border);border-radius:10px;padding:20px;margin:20px 0;position:relative}
.article-body-content .hl-box::before{content:'✧';position:absolute;top:-10px;right:16px;background:var(--primary);color:#fff;font-size:14px;border-radius:50%;width:24px;height:24px;display:flex;align-items:center;justify-content:center;box-shadow:0 4px 12px rgba(230,57,70,.4)}

/* Tags */
.article-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:32px;padding-top:22px;border-top:1px solid var(--border)}
.article-tags span{font-size:12px;color:var(--text-dim);display:flex;align-items:center;gap:6px;margin-right:4px}
.tag-chip{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;background:var(--bg-elev);border:1px solid var(--border);border-radius:20px;font-size:13px;color:var(--text-second);transition:var(--transition)}
.tag-chip:hover{background:rgba(230,57,70,.15);border-color:rgba(230,57,70,.4);color:var(--primary-light)}

/* Prev Next */
.article-prev-next{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:24px}
.pn-card{background:var(--bg-panel);border:1px solid var(--border);border-radius:10px;padding:18px 20px;transition:var(--transition);display:block}
.pn-card:hover{border-color:var(--primary);transform:translateY(-2px)}
.pn-card .pn-label{font-size:12px;color:var(--text-dim);display:block;margin-bottom:4px;display:flex;align-items:center;gap:6px}
.pn-card.next{text-align:right}
.pn-card .pn-title{font-size:14px;color:var(--text-main);font-weight:600;line-height:1.5}
.pn-card:hover .pn-title{color:var(--primary-light)}

/* Sidebar Widgets */
.article-sidebar{display:flex;flex-direction:column;gap:22px}
.widget{background:var(--bg-panel);border:1px solid var(--border);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow-sm)}
.widget-title{font-size:14px;font-weight:700;color:#fff;margin-bottom:16px;display:flex;align-items:center;gap:8px;padding-bottom:10px;border-bottom:1px solid var(--border)}
.widget-title i{color:var(--primary);font-size:14px}
.widget-title::after{content:'';flex:1;height:1px;background:linear-gradient(90deg,var(--border),transparent)}
.widget-list li{margin-bottom:2px}
.widget-link{display:flex;align-items:flex-start;gap:10px;padding:10px 8px;border-radius:8px;transition:var(--transition);color:var(--text-second);font-size:13px;line-height:1.5}
.widget-link i{color:var(--text-dim);font-size:13px;margin-top:3px;flex-shrink:0}
.widget-link:hover{background:var(--bg-elev);color:#fff}
.widget-link:hover i{color:var(--primary-light)}
.widget-link .w-left{min-width:0}
.widget-link .w-title{display:block;font-weight:500;color:var(--text-main);font-size:14px;margin-bottom:2px}
.widget-link .w-meta{font-size:12px;color:var(--text-dim);display:flex;gap:10px}
.widget-stat{display:flex;align-items:center;justify-content:center;gap:10px;padding:12px;background:var(--bg-dark);border-radius:10px}
.widget-stat i{color:var(--accent);font-size:18px}
.widget-stat dd{font-weight:700;font-size:18px}
.widget-stat dt{font-size:12px;color:var(--text-dim)}
.widget-ad{background:linear-gradient(135deg,rgba(230,57,70,.15),rgba(244,162,97,.1));border:1px solid rgba(230,57,70,.3);padding:22px;border-radius:var(--radius);text-align:center}
.widget-ad h4{color:#fff;font-size:18px;margin-bottom:8px;display:flex;align-items:center;justify-content:center;gap:8px}
.widget-ad h4 i{color:var(--primary-light)}
.widget-ad p{font-size:13px;color:var(--text-second);margin-bottom:14px}
.news-list{margin-top:16px;display:flex;flex-direction:column;gap:10px}
.news-item{display:flex;gap:10px;align-items:center;padding:8px;background:var(--bg-dark);border:1px solid var(--border);border-radius:8px;transition:var(--transition)}
.news-item:hover{border-color:var(--primary)}
.news-item .news-rank{width:22px;height:22px;background:var(--bg-elev);border-radius:6px;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;color:var(--text-second)}
.news-item:nth-child(1) .news-rank{background:var(--primary);color:#fff}
.news-item:nth-child(2) .news-rank{background:var(--accent);color:#1c2333}
.news-item .news-name{font-size:13px;color:var(--text-main);flex:1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.news-item .news-status{width:6px;height:6px;font-size:0;border-radius:50%;background:#22c55e;flex-shrink:0}
.news-item .news-status.off{background:var(--text-dim)}
.news-item .news-status.new{background:#f59e0b;box-shadow:0 0 6px rgba(245,158,11,.5)}

/* Info Panel */
.info-panel{background:linear-gradient(135deg,var(--bg-panel),var(--bg-dark));border:1px solid var(--border);border-radius:var(--radius);padding:20px;display:flex;flex-direction:column;gap:14px}
.info-panel-header{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:14px}
.info-panel-header i{color:var(--accent)}
.info-panel p{font-size:13px;color:var(--text-second);line-height:1.7}
.panel-row{display:flex;align-items:center;gap:12px;padding:12px 14px;background:var(--bg-dark);border-radius:8px;border:1px solid var(--border)}
.panel-row i{color:var(--primary-light);font-size:16px;width:20px;text-align:center}
.panel-row span{color:var(--text-main);font-size:14px;flex:1}
.panel-row a{color:var(--accent);font-size:13px;font-weight:600}
.panel-row a:hover{color:#fff}

/* FAQ Section */
.faq-section{padding:56px 0;position:relative}
.faq-section::before{content:'';position:absolute;inset:0;background:url('/assets/images/backpic/back-3.png') center/cover no-repeat;opacity:.06;pointer-events:none}
.faq-section .container{position:relative;z-index:1}
.section-head{text-align:center;margin-bottom:36px}
.section-head .section-tag{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;background:rgba(230,57,70,.12);border:1px solid rgba(230,57,70,.3);border-radius:20px;color:var(--primary-light);font-size:12px;font-weight:600;margin-bottom:12px}
.section-head h2{font-size:28px;font-weight:800;letter-spacing:.5px;background:linear-gradient(90deg,#fff,var(--text-second));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.section-head p{color:var(--text-second);font-size:14px;margin-top:8px}
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.faq-item{background:var(--bg-panel);border:1px solid var(--border);border-radius:12px;padding:20px;cursor:pointer;transition:var(--transition);position:relative}
.faq-item:hover{border-color:var(--primary);transform:translateY(-2px)}
.faq-item.q{display:flex;align-items:center;gap:10px;font-size:14px;font-weight:600;color:var(--text-main)}
.faq-item .faq-q-icon{width:24px;height:24px;background:rgba(230,57,70,.15);border-radius:6px;display:flex;align-items:center;justify-content:center;color:var(--primary-light);font-size:12px;flex-shrink:0}

/* CTA */
.cta-section{padding:56px 0 72px}
.cta-card{background:linear-gradient(135deg,#1c2333,#161b22);border:1px solid var(--border);border-radius:20px;padding:44px;position:relative;overflow:hidden}
.cta-card::before{content:'';position:absolute;top:-20px;right:-20px;width:200px;height:200px;background:radial-gradient(circle,rgba(230,57,70,.2),transparent 70%);pointer-events:none}
.cta-card::after{content:'';position:absolute;bottom:-30px;left:10px;width:120px;height:120px;background:radial-gradient(circle,rgba(244,162,97,.1),transparent 70%);pointer-events:none}
.cta-inner{position:relative;z-index:1;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-text h3{font-size:26px;font-weight:800;margin-bottom:8px}
.cta-text p{color:var(--text-second);max-width:520px;font-size:14px}
.cta-action{display:flex;gap:12px;flex-wrap:wrap}

/* Footer */
.footer{background:var(--bg-panel);border-top:1px solid var(--border);padding:48px 0 20px;margin-top:auto}
.footer-inner{display:grid;grid-template-columns:2fr 1fr 1fr;gap:32px;padding-bottom:28px}
.footer-brand .brand-str{display:flex;align-items:center;gap:10px;font-size:20px;font-weight:800;margin-bottom:12px}
.footer-brand .brand-str .fd{width:24px;height:4px;background:var(--primary);border-radius:2px;display:inline-block}
.footer-brand p{font-size:13px;color:var(--text-second);line-height:1.8;max-width:320px}
.footer-links{display:contents}
.footer-links>div h4{font-size:14px;color:#fff;margin-bottom:14px;font-weight:700}
.footer-links ul li{margin-bottom:8px}
.footer-links ul a{color:var(--text-second);font-size:13px;transition:var(--transition)}
.footer-links ul a:hover{color:var(--primary-light);padding-left:4px}
.footer-copy{border-top:1px solid var(--border);padding-top:20px;text-align:center}
.footer-copy p{font-size:13px;color:var(--text-dim)}

/* Scrollbar */
::-webkit-scrollbar{width:8px;height:8px}
::-webkit-scrollbar-track{background:var(--bg-dark)}
::-webkit-scrollbar-thumb{background:var(--border);border-radius:4px}
::-webkit-scrollbar-thumb:hover{background:var(--border-light)}

/* Selection */
::selection{background:rgba(230,57,70,.3);color:#fff}

/* Focus */
:focus-visible{outline:2px solid var(--primary-light);outline-offset:2px;border-radius:4px}

/* Responsive */
@media(max-width:1200px){
  .article-layout{grid-template-columns:1fr;gap:24px}
  .article-sidebar{display:grid;grid-template-columns:1fr 1fr;gap:22px}
}
@media(max-width:1024px){
  :root{--sidebar-w:220px}
  .article-hero h1{font-size:26px}
  .article-layout{grid-template-columns:1fr}
  .article-sidebar{flex-direction:column}
  .topbar-title{display:none}
  .faq-grid{grid-template-columns:1fr}
  .footer-inner{grid-template-columns:1fr 1fr;gap:24px}
  .footer-brand{grid-column:1 / -1}
}
@media(max-width:768px){
  .sidebar{width:0;transform:translateX(-100%);border-right:none;box-shadow:none;display:none}
  .main-content{margin-left:0}
  .topbar{padding:12px 16px}
  .topbar-actions{display:none}
  .container{padding:0 16px}
  .article-hero{padding:24px 0}
  .article-hero h1{font-size:22px}
  .article-meta{flex-direction:column;align-items:flex-start;gap:10px}
  .article-body{padding:22px}
  .article-cover img{height:200px}
  .article-layout{padding:16px 0 32px}
  .form-grid{grid-template-columns:1fr}
  .form-grid .field{grid-column:auto}
  .faq-grid{grid-template-columns:1fr}
  .cta-card{padding:28px}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .article-prev-next{grid-template-columns:1fr}
  .widget{padding:18px}
  .widget-list li .widget-link{gap:8px}
  .footer-inner{grid-template-columns:1fr;gap:28px}
  .footer-links{flex-wrap:wrap;gap:24px}
  .footer-links>div{flex:1;min-width:120px}
  .footer-copy p{font-size:12px}
  .status-text span{display:none}
}
@media(max-width:520px){
  .article-body-content{font-size:14px}
  .article-toggle{flex-wrap:wrap}
  .article-toggle button{flex:1;justify-content:center}
  .info-panel{padding:16px}
  .cta-card{padding:16px}
  .cta-text h3{font-size:18px}
  .footer-brand p{font-size:12px}
  .widget-stat dd{font-size:16px}
  .article-meta .meta-item{font-size:12px}
  .breadcrumb{padding:14px 0 0}
}

/* roulang page: category1 */
/* ===== 设计变量 ===== */
:root{
  --primary:#0b1a2e;
  --primary-2:#12263f;
  --primary-3:#1b3a5c;
  --accent:#e8453c;
  --accent-dark:#d4352c;
  --cyan:#25c7d9;
  --cyan-dark:#1ca3b8;
  --bg:#f0f2f6;
  --card-bg:#ffffff;
  --text:#16213e;
  --text-light:#5c6b7c;
  --text-invert:#edf2f8;
  --border:#e3e8ef;
  --radius:14px;
  --radius-sm:10px;
  --shadow:0 8px 30px rgba(10,25,50,.08);
  --shadow-lg:0 16px 40px rgba(10,25,50,.14);
  --sidebar-w:84px;
  --spacer:72px;
  --font:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}
/* ===== Reset & Base ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.7;font-size:16px;letter-spacing:.1px}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
button,input,select,textarea{font-family:inherit}
button{cursor:pointer;border:none;background:none}
.container{max-width:1240px;margin:0 auto;padding:0 28px;width:100%}
::selection{background:rgba(232,69,60,.18);color:#0b1a2e}

/* 可访问性 */
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:4px}

/* ===== App Shell 布局 ===== */
.app-shell{display:flex;min-height:100vh}
.side-nav{
  position:fixed;left:0;top:0;bottom:0;width:var(--sidebar-w);
  background:linear-gradient(180deg,#091525 0%,#0d1f36 100%);
  display:flex;flex-direction:column;align-items:center;
  padding:22px 0;z-index:1000;gap:10px;
  border-right:1px solid rgba(255,255,255,.05);
}
.brand-mark{
  width:46px;height:46px;border-radius:12px;
  background:linear-gradient(135deg,var(--accent),#ff6b5e);
  display:flex;align-items:center;justify-content:center;
  font-weight:800;color:#fff;font-size:15px;letter-spacing:-.5px;
  box-shadow:0 6px 18px rgba(232,69,60,.35),0 0 0 4px rgba(232,69,60,.12);
  margin-bottom:20px;transition:transform .25s ease,box-shadow .25s ease;
}
.brand-mark:hover{transform:scale(1.06);box-shadow:0 8px 24px rgba(232,69,60,.5),0 0 0 6px rgba(232,69,60,.15)}
.brand-mark span{transform:rotate(-2deg)}
.nav-item{
  display:flex;flex-direction:column;align-items:center;
  width:64px;padding:12px 4px;border-radius:12px;
  color:rgba(237,242,248,.55);font-size:12px;font-weight:500;
  transition:all .28s ease;gap:6px;line-height:1.2;
  border:1px solid transparent;position:relative;
}
.nav-item i{font-size:20px;transition:transform .25s ease}
.nav-item:hover{color:#fff;background:rgba(255,255,255,.06)}
.nav-item:hover i{transform:translateY(-2px)}
.nav-item.active{
  color:#fff;background:rgba(232,69,60,.16);
  border-color:rgba(232,69,60,.4);
}
.nav-item.active::before{
  content:"";position:absolute;left:-10px;top:50%;transform:translateY(-50%);
  width:3px;height:26px;background:var(--accent);border-radius:0 4px 4px 0;
}
.nav-item.active i{color:#ff6b5e}
.main-area{
  flex:1;margin-left:var(--sidebar-w);min-width:0;
  display:flex;flex-direction:column;
}

/* 移动端顶部 */
.mobile-top{
  display:none;position:sticky;top:0;z-index:999;
  height:60px;background:rgba(11,26,46,.96);backdrop-filter:blur(12px);
  align-items:center;padding:0 20px;gap:14px;
  border-bottom:1px solid rgba(255,255,255,.06);
}
.mobile-top .brand-mark{width:36px;height:36px;margin:0;font-size:12px;box-shadow:0 4px 12px rgba(232,69,60,.3)}
.mobile-top .mt-title{color:#fff;font-weight:700;font-size:16px;flex:1}
.mt-burger{width:40px;height:40px;border-radius:10px;background:rgba(255,255,255,.08);display:flex;align-items:center;justify-content:center;color:#fff;font-size:18px;transition:background .25s}
.mt-burger:hover{background:rgba(255,255,255,.16)}
.mobile-menu{
  display:none;position:fixed;top:60px;left:0;right:0;z-index:998;
  background:#0b1a2e;padding:14px 20px 22px;flex-direction:column;gap:6px;
  border-bottom:1px solid rgba(255,255,255,.08);box-shadow:0 18px 35px rgba(0,0,0,.3);
}
.mobile-menu.open{display:flex}
.mobile-menu .nav-item{width:100%;flex-direction:row;justify-content:flex-start;padding:12px 16px;font-size:14px;gap:12px;border-radius:10px}
.mobile-menu .nav-item.active::before{display:none}
.mobile-menu .nav-item.active{background:rgba(232,69,60,.15)}

/* ===== Hero ===== */
.page-hero{
  position:relative;min-height:380px;display:flex;align-items:center;
  background:linear-gradient(135deg,#0b1a2e 0%,#12263f 55%,#1b3a5c 100%);
  overflow:hidden;padding:70px 0;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  opacity:.28;mix-blend-mode:luminosity;
}
.page-hero::after{
  content:"";position:absolute;top:-60px;right:-60px;width:320px;height:320px;
  background:radial-gradient(circle,rgba(232,69,60,.22),transparent 70%);
  pointer-events:none;
}
.hero-bar{position:absolute;left:0;right:0;bottom:0;height:4px;background:linear-gradient(90deg,var(--accent),#ff8a5c,transparent);opacity:.8}
.hero-inner{position:relative;z-index:2;color:var(--text-invert);max-width:860px}
.hero-badge{
  display:inline-flex;align-items:center;gap:10px;
  background:rgba(232,69,60,.16);border:1px solid rgba(232,69,60,.45);
  padding:7px 18px;border-radius:100px;font-size:13px;font-weight:600;
  letter-spacing:1.2px;margin-bottom:22px;color:#ffb3ad;
}
.hero-badge .dot{
  width:7px;height:7px;border-radius:50%;background:var(--accent);
  box-shadow:0 0 0 4px rgba(232,69,60,.25);animation:pulse 2s infinite;
}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.5}}
.page-hero h1{
  font-size:42px;line-height:1.25;font-weight:800;letter-spacing:-.5px;
  margin-bottom:16px;
}
.page-hero h1 .hl{color:#ff6b5e;position:relative}
.page-hero h1 .hl::after{
  content:"";position:absolute;left:0;right:0;bottom:4px;height:8px;
  background:rgba(232,69,60,.25);z-index:-1;border-radius:4px;
}
.hero-sub{font-size:17px;color:rgba(237,242,248,.72);max-width:680px;margin-bottom:30px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.btn{
  display:inline-flex;align-items:center;gap:10px;
  padding:13px 30px;border-radius:12px;font-weight:600;font-size:15px;
  transition:all .28s ease;border:1px solid transparent;
}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 6px 20px rgba(232,69,60,.35)}
.btn-primary:hover{background:var(--accent-dark);transform:translateY(-2px);box-shadow:0 10px 28px rgba(232,69,60,.45)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:rgba(255,255,255,.08);color:#fff;border-color:rgba(255,255,255,.2)}
.btn-ghost:hover{background:rgba(255,255,255,.16);border-color:rgba(255,255,255,.4);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}

/* ===== 通用板块 ===== */
.section{padding:70px 0}
.section-alt{background:#fff}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;gap:16px;margin-bottom:40px}
.section-head .tag{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;color:var(--accent);
  background:rgba(232,69,60,.08);border:1px solid rgba(232,69,60,.2);
  padding:5px 14px;border-radius:100px;letter-spacing:1px;
}
.section-head h2{font-size:30px;font-weight:800;letter-spacing:-.3px;color:var(--text);margin-top:8px}
.section-head p{color:var(--text-light);font-size:15px;max-width:640px}
.section-head .head-right{margin-left:auto}

/* ===== 入口平台卡片 ===== */
.platform-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.platform-card{
  background:var(--card-bg);border-radius:var(--radius);border:1px solid var(--border);
  overflow:hidden;transition:all .3s ease;position:relative;
}
.platform-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:rgba(37,199,217,.4)}
.platform-card .pc-img{position:relative;height:150px;overflow:hidden}
.platform-card .pc-img img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease}
.platform-card:hover .pc-img img{transform:scale(1.06)}
.platform-card .pc-img::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(11,26,46,.02) 40%,rgba(11,26,46,.55) 100%);
}
.platform-card .pc-tag{
  position:absolute;top:12px;left:12px;z-index:2;
  background:rgba(232,69,60,.9);color:#fff;font-size:12px;font-weight:700;
  padding:3px 12px;border-radius:100px;letter-spacing:.8px;backdrop-filter:blur(4px);
}
.platform-card .pc-body{padding:20px}
.platform-card .pc-body h3{font-size:18px;font-weight:700;margin-bottom:6px;color:var(--text)}
.platform-card .pc-body p{font-size:14px;color:var(--text-light);line-height:1.6}
.platform-card .pc-link{
  display:inline-flex;align-items:center;gap:6px;margin-top:12px;
  color:var(--cyan-dark);font-size:14px;font-weight:600;transition:gap .25s ease;
}
.platform-card .pc-link:hover{gap:12px;color:var(--accent)}

/* ===== 流程步骤 ===== */
.steps-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;counter-reset:step}
.step-item{
  position:relative;background:var(--card-bg);border-radius:var(--radius);
  border:1px solid var(--border);padding:28px 24px;overflow:hidden;
  transition:all .3s ease;
}
.step-item:hover{box-shadow:var(--shadow);border-color:rgba(232,69,60,.3);transform:translateY(-4px)}
.step-item::before{
  counter-increment:step;content:counter(step,decimal-leading-zero);
  position:absolute;right:12px;top:8px;font-size:52px;font-weight:900;
  color:rgba(11,26,46,.05);line-height:1;letter-spacing:-3px;
}
.step-icon{
  width:50px;height:50px;border-radius:13px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--primary),var(--primary-3));
  color:#fff;font-size:21px;margin-bottom:16px;transition:transform .3s ease;
}
.step-item:hover .step-icon{transform:scale(1.08) rotate(-4deg)}
.step-item h3{font-size:17px;font-weight:700;margin-bottom:8px;color:var(--text)}
.step-item p{font-size:14px;color:var(--text-light);line-height:1.6}
.step-arrow{
  position:absolute;right:-18px;top:50%;transform:translateY(-50%);
  color:rgba(37,199,217,.4);font-size:18px;z-index:3;
}
@media (max-width:991px){.step-arrow{display:none}}

/* ===== 排行榜 ===== */
.rank-panel{background:var(--primary);border-radius:var(--radius);padding:36px;overflow:hidden;position:relative}
.rank-panel::before{
  content:"";position:absolute;top:0;right:0;width:240px;height:240px;
  background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;opacity:.1;
  border-radius:50%;
}
.rank-panel h2{color:#fff;font-size:26px;font-weight:800;margin-bottom:6px;position:relative;z-index:2}
.rank-panel > p{color:rgba(237,242,248,.6);font-size:15px;margin-bottom:28px;position:relative;z-index:2}
.rank-list{position:relative;z-index:2;display:flex;flex-direction:column;gap:12px}
.rank-item{
  display:flex;align-items:center;gap:18px;
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.08);
  padding:16px 20px;border-radius:12px;transition:all .28s ease;
}
.rank-item:hover{background:rgba(255,255,255,.12);border-color:rgba(37,199,217,.35);transform:translateX(6px)}
.rank-num{
  width:40px;height:40px;flex-shrink:0;border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  font-weight:800;font-size:16px;color:#fff;
  background:rgba(255,255,255,.1);
}
.rank-item:nth-child(1) .rank-num{background:var(--accent);box-shadow:0 0 18px rgba(232,69,60,.4)}
.rank-item:nth-child(2) .rank-num{background:var(--cyan-dark);box-shadow:0 0 18px rgba(37,199,217,.3)}
.rank-item:nth-child(3) .rank-num{background:rgba(232,69,60,.55)}
.rank-info{flex:1;min-width:0}
.rank-info h3{color:#fff;font-size:16px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.rank-info span{color:rgba(237,242,248,.5);font-size:13px}
.rank-rate{
  display:inline-flex;align-items:center;gap:6px;color:#ffb3ad;font-size:13px;font-weight:600;
  background:rgba(232,69,60,.14);padding:4px 12px;border-radius:100px;white-space:nowrap;
}
.rank-go{
  width:34px;height:34px;border-radius:9px;background:rgba(255,255,255,.1);
  display:flex;align-items:center;justify-content:center;color:#fff;
  transition:all .25s ease;flex-shrink:0;
}
.rank-item:hover .rank-go{background:var(--cyan-dark);transform:translateX(4px)}

/* ===== 数据统计 ===== */
.stats-band{
  background:linear-gradient(120deg,#0b1a2e,#13263f);border-radius:var(--radius);
  display:grid;grid-template-columns:repeat(4,1fr);overflow:hidden;
  border:1px solid rgba(255,255,255,.06);
}
.stat-cell{
  padding:36px 24px;text-align:center;position:relative;color:#fff;
}
.stat-cell:not(:last-child)::after{
  content:"";position:absolute;right:0;top:28%;bottom:28%;width:1px;
  background:rgba(255,255,255,.1);
}
.stat-cell .num{font-size:40px;font-weight:900;line-height:1.2;letter-spacing:-1px}
.stat-cell .num em{font-style:normal;color:var(--accent)}
.stat-cell .name{font-size:14px;color:rgba(237,242,248,.6);margin-top:8px;letter-spacing:1px}
.stat-cell .sm-line{width:26px;height:3px;background:var(--accent);margin:10px auto 0;border-radius:3px}

/* ===== FAQ ===== */
.faq-list{display:flex;flex-direction:column;gap:14px;max-width:860px}
.faq-item{
  background:var(--card-bg);border:1px solid var(--border);border-radius:var(--radius);
  overflow:hidden;transition:all .3s ease;
}
.faq-item:hover{border-color:rgba(37,199,217,.4);box-shadow:var(--shadow)}
.faq-item summary{
  list-style:none;cursor:pointer;padding:22px 26px;display:flex;align-items:center;gap:16px;
  font-size:16px;font-weight:600;color:var(--text);position:relative;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::before{
  content:"Q";width:32px;height:32px;flex-shrink:0;border-radius:9px;
  background:rgba(232,69,60,.1);border:1px solid rgba(232,69,60,.25);
  display:flex;align-items:center;justify-content:center;
  color:var(--accent);font-weight:800;font-size:14px;
}
.faq-item summary::after{
  content:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;
  margin-left:auto;color:var(--text-light);transition:transform .3s ease;font-size:14px;
}
.faq-item[open] summary::after{transform:rotate(180deg);color:var(--accent)}
.faq-item[open] summary{border-bottom:1px solid var(--border);padding-bottom:16px}
.faq-item .faq-a{
  padding:18px 26px 24px;color:var(--text-light);font-size:15px;line-height:1.8;
  border-left:3px solid rgba(37,199,217,.4);margin:0 20px 20px 58px;border-radius:0 8px 8px 0;
  background:rgba(37,199,217,.04);
}

/* ===== CTA ===== */
.cta-band{
  background:linear-gradient(135deg,#0b1a2e 0%,#16304f 100%);
  border-radius:var(--radius);overflow:hidden;position:relative;
  padding:60px;display:flex;align-items:center;justify-content:space-between;gap:36px;
}
.cta-band::before{
  content:"";position:absolute;top:0;left:0;right:0;height:4px;
  background:linear-gradient(90deg,var(--accent),var(--cyan),var(--accent));
}
.cta-band .cta-txt h2{color:#fff;font-size:28px;font-weight:800;margin-bottom:10px}
.cta-band .cta-txt p{color:rgba(237,242,248,.65);font-size:15px;max-width:520px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;flex-shrink:0}

/* ===== Footer ===== */
.footer{
  background:#091525;color:rgba(237,242,248,.62);margin-top:auto;
  padding:68px 0 0;border-top:4px solid var(--accent);position:relative;
}
.footer::after{
  content:"";position:absolute;top:-4px;left:0;height:4px;width:160px;
  background:linear-gradient(90deg,var(--accent),transparent);
}
.footer-inner{display:grid;grid-template-columns:1.2fr .8fr;gap:50px;padding-bottom:44px}
.footer-brand .brand-str{
  display:flex;align-items:center;gap:12px;color:#fff;font-size:22px;font-weight:800;
  letter-spacing:-.3px;margin-bottom:16px;
}
.brand-str .fd{
  width:9px;height:9px;background:var(--accent);border-radius:2px;
  box-shadow:0 0 0 4px rgba(232,69,60,.25);display:inline-block;
}
.footer-brand p{font-size:14px;line-height:1.8;max-width:420px}
.footer-links{display:grid;grid-template-columns:1fr 1fr;gap:30px}
.footer-links h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:16px;letter-spacing:.5px}
.footer-links ul{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14px;color:rgba(237,242,248,.58);transition:all .2s;display:inline-flex;align-items:center;gap:6px}
.footer-links a:hover{color:#ff6b5e;padding-left:4px}
.footer-copy{
  border-top:1px solid rgba(255,255,255,.07);padding:22px 0;text-align:center;
  font-size:13px;color:rgba(237,242,248,.45);
}
.footer-copy a{color:rgba(237,242,248,.55)}
.footer-copy a:hover{color:#ff6b5e}

/* ===== 响应式断点 ===== */
@media (min-width:992px){
  .mobile-top,.mobile-menu{display:none!important}
}
@media (max-width:991px){
  .side-nav{display:none}
  .mobile-top{display:flex}
  .main-area{margin-left:0}
  .platform-grid{grid-template-columns:repeat(2,1fr)}
  .steps-grid{grid-template-columns:repeat(2,1fr)}
  .stats-band{grid-template-columns:repeat(2,1fr)}
  .stat-cell:nth-child(2)::after{display:none}
  .cta-band{flex-direction:column;align-items:flex-start;padding:44px}
  .section{padding:52px 0}
}
@media (max-width:767px){
  .page-hero h1{font-size:32px}
  .hero-sub{font-size:15px}
  .footer-inner{grid-template-columns:1fr;gap:38px}
  .footer-links{grid-template-columns:1fr 1fr}
}
@media (max-width:520px){
  .container{padding:0 18px}
  .platform-grid{grid-template-columns:1fr}
  .steps-grid{grid-template-columns:1fr}
  .stats-band{grid-template-columns:1fr 1fr}
  .stat-cell{padding:24px 14px}
  .stat-cell .num{font-size:32px}
  .rank-panel{padding:24px}
  .rank-item{flex-wrap:wrap;gap:10px}
  .rank-rate{margin-left:auto}
  .page-hero{padding:54px 0}
  .page-hero h1{font-size:27px}
  .cta-band{padding:34px 22px}
  .section-head h2{font-size:24px}
  .footer-inner{grid-template-columns:1fr}
  .footer-links{grid-template-columns:1fr 1fr;gap:20px}
}

/* roulang page: category3 */
:root {
  --bg-deep: #0b0d12;
  --bg-dark: #11141b;
  --bg-panel: #161b24;
  --bg-card: #1c222e;
  --bg-hover: #232b3a;
  --line: #2a3342;
  --line-light: #364052;
  --txt-hi: #f0f3f8;
  --txt: #c6cfdb;
  --txt-dim: #8b96a8;
  --accent: #ff3b4e;
  --accent-dark: #d9283a;
  --accent-glow: rgba(255, 59, 78, 0.35);
  --ok: #22c55e;
  --warn: #f59e0b;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 8px 28px rgba(0, 0, 0, 0.45);
  --font: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --mono: "JetBrains Mono", "SF Mono", "Consolas", monospace;
}
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: var(--font);
  background: var(--bg-deep);
  color: var(--txt);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
img {
  max-width: 100%;
  display: block;
}
a {
  color: inherit;
  text-decoration: none;
  transition: color .2s ease;
}
button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}
ul {
  list-style: none;
}
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}
.app {
  display: flex;
  min-height: 100vh;
}
/* ===== Side Nav ===== */
.side-nav {
  position: fixed;
  left: 0;
  top: 0;
  bottom: 0;
  width: 248px;
  z-index: 100;
  background: linear-gradient(180deg, #0d1016, #11141b);
  border-right: 1px solid var(--line);
  padding: 24px 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 8px 18px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 12px;
}
.brand-str {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 20px;
  font-weight: 800;
  color: var(--txt-hi);
  letter-spacing: .5px;
}
.brand-str .fd {
  width: 10px;
  height: 10px;
  background: var(--accent);
  border-radius: 2px;
  box-shadow: 0 0 12px var(--accent-glow);
}
.brand-sub {
  font-size: 11px;
  color: var(--txt-dim);
  font-family: var(--mono);
  letter-spacing: 1px;
  margin-left: 26px;
  margin-top: -14px;
}
.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 14px;
  border-radius: 10px;
  color: var(--txt-dim);
  font-size: 14px;
  font-weight: 600;
  transition: all .22s ease;
  border: 1px solid transparent;
}
.nav-item i {
  width: 18px;
  text-align: center;
  font-size: 15px;
}
.nav-item:hover {
  background: var(--bg-card);
  color: var(--txt-hi);
}
.nav-item.active {
  background: rgba(255, 59, 78, 0.1);
  color: var(--accent);
  border-color: rgba(255, 59, 78, 0.25);
}
.nav-item.active::before {
  content: "";
  width: 4px;
  height: 4px;
  background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--accent-glow);
  margin-left: -4px;
  margin-right: 2px;
}
.nav-foot {
  margin-top: auto;
  padding: 12px 10px;
  border-top: 1px solid var(--line);
}
.nav-status {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ok);
}
.nav-status .status-dot {
  width: 7px;
  height: 7px;
  background: var(--ok);
  border-radius: 50%;
  box-shadow: 0 0 8px rgba(34, 197, 94, 0.5);
  animation: pulse-dot 2s infinite;
}
.nav-foot p {
  font-size: 11px;
  color: var(--txt-dim);
  margin-top: 4px;
}
@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: .5; transform: scale(.8); }
}
/* ===== Mobile Top ===== */
.mobile-top {
  display: none;
  position: sticky;
  top: 0;
  z-index: 90;
  background: rgba(13, 16, 22, 0.95);
  backdrop-filter: blur(12px);
  padding: 12px 18px;
  border-bottom: 1px solid var(--line);
  align-items: center;
  justify-content: space-between;
}
.mobile-top .brand-str {
  font-size: 17px;
}
.menu-btn {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: 10px;
  color: var(--txt-hi);
  font-size: 18px;
  background: var(--bg-panel);
  transition: all .2s;
}
.menu-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}
.nav-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  z-index: 95;
  backdrop-filter: blur(2px);
}
/* ===== Main ===== */
.main {
  flex: 1;
  margin-left: 248px;
  min-width: 0;
}
/* ===== Hero ===== */
.hero {
  position: relative;
  padding: 84px 0 72px;
  background:
    linear-gradient(120deg, rgba(10, 12, 18, 0.94) 0%, rgba(13, 17, 26, 0.84) 55%, rgba(18, 22, 32, 0.88) 100%),
    url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  border-bottom: 1px solid var(--line);
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 2px;
  color: var(--txt-dim);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--line);
  padding: 6px 12px;
  border-radius: 999px;
  margin-bottom: 18px;
}
.dot-blink {
  width: 7px;
  height: 7px;
  background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--accent-glow);
  animation: pulse-dot 1.6s infinite;
}
.hero-title {
  font-size: 48px;
  line-height: 1.18;
  font-weight: 900;
  color: var(--txt-hi);
  letter-spacing: 1px;
  max-width: 720px;
}
.hero-sub {
  margin-top: 18px;
  font-size: 16px;
  line-height: 1.9;
  color: var(--txt);
  max-width: 680px;
}
.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 30px;
}
/* ===== Button ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 700;
  transition: all .22s ease;
  border: 1px solid transparent;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 4px 18px var(--accent-glow);
}
.btn-primary:hover {
  background: var(--accent-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 26px var(--accent-glow);
}
.btn-ghost {
  background: transparent;
  border-color: var(--line-light);
  color: var(--txt-hi);
}
.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(255, 59, 78, 0.06);
}
.btn-sm {
  padding: 8px 16px;
  font-size: 13px;
  border-radius: 8px;
}
/* ===== Status Bar ===== */
.status-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 36px;
}
.status-item {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px 16px;
  font-size: 13px;
  color: var(--txt-dim);
}
.status-item .status-dot {
  width: 6px;
  height: 6px;
  background: var(--ok);
  border-radius: 50%;
}
.status-item b {
  color: var(--txt-hi);
  font-family: var(--mono);
  font-size: 14px;
  margin-left: 2px;
}
/* ===== Breadcrumb ===== */
.breadcrumb {
  background: var(--bg-dark);
  border-bottom: 1px solid var(--line);
  padding: 14px 0;
}
.breadcrumb .container {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--txt-dim);
}
.breadcrumb a {
  color: var(--txt-dim);
}
.breadcrumb a:hover {
  color: var(--accent);
}
.breadcrumb .sep {
  color: var(--line-light);
}
.breadcrumb span:last-child {
  color: var(--txt);
  font-weight: 600;
}
/* ===== Section ===== */
.section {
  padding: 68px 0;
  border-bottom: 1px solid var(--line);
}
.section-dark {
  background: var(--bg-dark);
}
.section-inverse {
  background: linear-gradient(135deg, #131720, #0c0f16);
}
.section-head {
  max-width: 720px;
  margin-bottom: 36px;
}
.section-head.center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}
.section-tag {
  display: inline-block;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 2px;
  color: var(--accent);
  border: 1px solid rgba(255, 59, 78, 0.3);
  background: rgba(255, 59, 78, 0.06);
  padding: 4px 12px;
  border-radius: 999px;
  margin-bottom: 12px;
}
.section-head h2 {
  font-size: 30px;
  font-weight: 800;
  color: var(--txt-hi);
  line-height: 1.3;
}
.section-head p {
  margin-top: 10px;
  font-size: 15px;
  color: var(--txt-dim);
  line-height: 1.8;
}
/* ===== Cards ===== */
.grid-cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.card-entry {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all .25s ease;
}
.card-entry:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 59, 78, 0.35);
  box-shadow: var(--shadow);
}
.card-media {
  position: relative;
  height: 150px;
  overflow: hidden;
}
.card-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 50%, rgba(10, 12, 18, 0.8));
}
.card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s ease;
}
.card-entry:hover .card-media img {
  transform: scale(1.05);
}
.card-tag {
  position: absolute;
  top: 10px;
  right: 10px;
  z-index: 2;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 1px;
  color: #fff;
  background: rgba(0, 0, 0, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.2);
  padding: 3px 8px;
  border-radius: 6px;
  backdrop-filter: blur(6px);
}
.card-body {
  padding: 20px;
}
.card-body h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--txt-hi);
  margin-bottom: 8px;
}
.card-body p {
  font-size: 13px;
  color: var(--txt-dim);
  line-height: 1.75;
}
.card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 14px;
  font-size: 13px;
  font-weight: 700;
  color: var(--accent);
  transition: gap .2s ease;
}
.card-link:hover {
  gap: 10px;
}
/* ===== Entry List ===== */
.entry-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.entry-row {
  display: flex;
  align-items: center;
  gap: 18px;
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px 20px;
  transition: all .22s ease;
}
.entry-row:hover {
  border-color: rgba(255, 59, 78, 0.35);
  background: var(--bg-hover);
  transform: translateX(4px);
}
.entry-icon {
  flex: 0 0 44px;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 59, 78, 0.08);
  border: 1px solid rgba(255, 59, 78, 0.2);
  border-radius: 10px;
  color: var(--accent);
  font-size: 18px;
}
.entry-main {
  flex: 1;
  min-width: 0;
}
.entry-main h3 {
  font-size: 15px;
  font-weight: 700;
  color: var(--txt-hi);
}
.entry-main p {
  font-size: 13px;
  color: var(--txt-dim);
  margin-top: 3px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.entry-tags {
  flex: 0 0 auto;
}
.tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 999px;
}
.tag-ok {
  color: var(--ok);
  background: rgba(34, 197, 94, 0.1);
  border: 1px solid rgba(34, 197, 94, 0.3);
}
.tag-warn {
  color: var(--warn);
  background: rgba(245, 158, 11, 0.1);
  border: 1px solid rgba(245, 158, 11, 0.3);
}
.entry-meta {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  flex: 0 0 auto;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--txt-dim);
  gap: 2px;
}
.entry-meta span:first-child {
  color: var(--txt);
  font-weight: 700;
}
/* ===== Steps ===== */
.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.step {
  position: relative;
  padding: 26px 22px;
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: all .22s ease;
}
.step:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 59, 78, 0.3);
}
.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: rgba(255, 59, 78, 0.1);
  border: 1px solid rgba(255, 59, 78, 0.25);
  color: var(--accent);
  font-family: var(--mono);
  font-weight: 800;
  font-size: 15px;
  margin-bottom: 16px;
}
.step h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--txt-hi);
  margin-bottom: 8px;
}
.step p {
  font-size: 13px;
  color: var(--txt-dim);
  line-height: 1.75;
}
/* ===== Data Grid ===== */
.data-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.data-card {
  text-align: center;
  padding: 34px 20px;
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: all .22s ease;
}
.data-card:hover {
  border-color: rgba(255, 59, 78, 0.35);
  box-shadow: var(--shadow);
}
.data-card b {
  display: block;
  font-size: 34px;
  font-weight: 900;
  color: var(--txt-hi);
  font-family: var(--mono);
  letter-spacing: .5px;
}
.data-card b i {
  color: var(--accent);
  font-style: normal;
}
.data-card span {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  color: var(--txt-dim);
}
/* ===== FAQ ===== */
.faq {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color .2s ease;
}
.faq-item.open {
  border-color: rgba(255, 59, 78, 0.35);
}
.faq-q {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 22px;
  text-align: left;
  font-size: 15px;
  font-weight: 700;
  color: var(--txt-hi);
  transition: color .2s ease;
}
.faq-q:hover {
  color: var(--accent);
}
.faq-q i {
  flex: 0 0 auto;
  color: var(--txt-dim);
  font-size: 14px;
  transition: transform .3s ease;
}
.faq-item.open .faq-q i {
  transform: rotate(180deg);
  color: var(--accent);
}
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height .32s ease;
}
.faq-item.open .faq-a {
  max-height: 400px;
}
.faq-a p {
  padding: 0 22px 20px;
  font-size: 14px;
  color: var(--txt-dim);
  line-height: 1.85;
}
/* ===== CTA ===== */
.cta {
  padding: 72px 0;
  background:
    linear-gradient(110deg, rgba(255, 59, 78, 0.08), rgba(10, 12, 18, 0.6)),
    url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.cta-inner {
  text-align: center;
  max-width: 680px;
  margin: 0 auto;
  padding: 48px 40px;
  background: rgba(13, 16, 22, 0.82);
  border: 1px solid var(--line);
  border-radius: 18px;
  backdrop-filter: blur(10px);
}
.cta-inner h2 {
  font-size: 28px;
  font-weight: 800;
  color: var(--txt-hi);
}
.cta-inner p {
  margin-top: 12px;
  font-size: 15px;
  color: var(--txt-dim);
  line-height: 1.8;
}
.cta-inner .btn {
  margin-top: 24px;
}
/* ===== Footer ===== */
.footer {
  background: var(--bg-deep);
  padding: 52px 0 30px;
  border-top: 1px solid var(--line);
}
.footer-inner {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 40px;
  padding-bottom: 34px;
  border-bottom: 1px solid var(--line);
}
.footer-brand .brand-str {
  font-size: 22px;
  margin-bottom: 10px;
}
.footer-brand p {
  font-size: 14px;
  color: var(--txt-dim);
  line-height: 1.8;
  max-width: 360px;
}
.footer-links {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.footer-links h4 {
  font-size: 14px;
  color: var(--txt-hi);
  font-weight: 700;
  margin-bottom: 14px;
}
.footer-links li {
  margin-bottom: 8px;
}
.footer-links a {
  font-size: 13px;
  color: var(--txt-dim);
}
.footer-links a:hover {
  color: var(--accent);
}
.footer-copy {
  padding-top: 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.footer-copy p {
  font-size: 12px;
  color: var(--txt-dim);
  font-family: var(--mono);
}
/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .grid-cards {
    grid-template-columns: repeat(2, 1fr);
  }
  .steps {
    grid-template-columns: repeat(2, 1fr);
  }
  .data-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .hero-title {
    font-size: 38px;
  }
}
@media (max-width: 900px) {
  .side-nav {
    transform: translateX(-100%);
    transition: transform .3s ease;
    box-shadow: none;
  }
  .side-nav.open {
    transform: translateX(0);
    box-shadow: 12px 0 40px rgba(0, 0, 0, 0.5);
  }
  .nav-overlay.show {
    display: block;
  }
  .mobile-top {
    display: flex;
  }
  .main {
    margin-left: 0;
  }
  .status-bar {
    gap: 8px;
  }
}
@media (max-width: 768px) {
  .section {
    padding: 50px 0;
  }
  .hero {
    padding: 60px 0 48px;
  }
  .hero-title {
    font-size: 30px;
  }
  .hero-sub {
    font-size: 15px;
  }
  .section-head h2 {
    font-size: 25px;
  }
  .footer-inner {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .entry-row {
    flex-wrap: wrap;
    gap: 12px;
  }
  .entry-main {
    flex: 0 0 100%;
    order: 2;
  }
  .entry-main p {
    white-space: normal;
  }
  .entry-icon {
    order: 1;
  }
  .entry-tags,
  .entry-meta {
    order: 3;
  }
  .entry-meta {
    align-items: flex-start;
    flex-direction: row;
    gap: 12px;
  }
}
@media (max-width: 640px) {
  .grid-cards {
    grid-template-columns: 1fr;
  }
  .steps {
    grid-template-columns: 1fr;
  }
  .data-grid {
    grid-template-columns: 1fr;
  }
  .single-col-mobile {
    grid-template-columns: 1fr !important;
  }
  .footer-links {
    grid-template-columns: 1fr 1fr;
  }
}
@media (max-width: 520px) {
  .hero-cta {
    flex-direction: column;
    align-items: stretch;
  }
  .hero-cta .btn {
    justify-content: center;
  }
  .footer-copy {
    flex-direction: column;
    align-items: flex-start;
  }
  .status-item {
    flex: 1 1 auto;
    min-width: calc(50% - 6px);
    justify-content: center;
  }
  .cta-inner {
    padding: 34px 20px;
  }
}

/* roulang page: category2 */
/* ========== 设计变量 ========== */
    :root {
      --primary: #ff3b3b;
      --primary-dark: #d62828;
      --accent: #ffb020;
      --bg: #0b1220;
      --panel: #0e1726;
      --surface: #111c2e;
      --surface-hover: #16263b;
      --border: rgba(255, 255, 255, 0.08);
      --border-strong: rgba(255, 255, 255, 0.16);
      --text: #e8edf4;
      --text-dim: #8b95a5;
      --text-mute: #5f6b7d;
      --radius: 18px;
      --radius-sm: 11px;
      --shadow: 0 14px 48px rgba(0, 0, 0, 0.34);
      --shadow-card: 0 8px 30px rgba(0, 0, 0, 0.22);
      --nav-width: 248px;
      --font-main: "PingFang SC", "Microsoft YaHei", "Segoe UI", system-ui, -apple-system, sans-serif;
      --font-mono: "SF Mono", "JetBrains Mono", Consolas, monospace;
      --transition: all 0.24s ease;
    }

    /* ========== Reset & Base ========== */
    *,
    *::before,
    *::after {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      background: var(--bg);
      color: var(--text);
      font-family: var(--font-main);
      line-height: 1.7;
      font-size: 15px;
      -webkit-font-smoothing: antialiased;
      text-rendering: optimizeLegibility;
    }
    a {
      color: var(--text);
      text-decoration: none;
      transition: var(--transition);
    }
    img {
      max-width: 100%;
      display: block;
    }
    button,
    input,
    select,
    textarea {
      font-family: inherit;
      font-size: inherit;
    }
    button {
      cursor: pointer;
      background: none;
      border: none;
      color: inherit;
    }
    ::selection {
      background: rgba(255, 59, 59, 0.3);
      color: #fff;
    }

    /* ========== Container ========== */
    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 32px;
    }
    .container-narrow {
      max-width: 880px;
    }

    /* ========== 主内容布局 ========== */
    .main-content {
      margin-left: var(--nav-width);
      min-height: 70vh;
    }

    /* ========== 侧边导航 ========== */
    .site-header {
      position: relative;
      z-index: 50;
    }
    .side-nav {
      position: fixed;
      left: 0;
      top: 0;
      bottom: 0;
      width: var(--nav-width);
      background: #0a1320;
      border-right: 1px solid var(--border);
      display: flex;
      flex-direction: column;
      padding: 30px 18px;
      overflow-y: auto;
      z-index: 60;
      scrollbar-width: thin;
      scrollbar-color: rgba(255, 255, 255, 0.12) transparent;
    }
    .side-nav::-webkit-scrollbar {
      width: 4px;
    }
    .side-nav::-webkit-scrollbar-thumb {
      background: rgba(255, 255, 255, 0.12);
      border-radius: 4px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 11px;
      padding: 8px 10px;
      border-radius: 13px;
      font-size: 21px;
      font-weight: 800;
      letter-spacing: 0.4px;
      transition: var(--transition);
    }
    .brand-logo:hover {
      background: rgba(255, 255, 255, 0.04);
    }
    .brand-dot {
      width: 9px;
      height: 9px;
      background: var(--primary);
      border-radius: 50%;
      box-shadow: 0 0 0 4px rgba(255, 59, 59, 0.16), 0 0 14px rgba(255, 59, 59, 0.45);
      flex-shrink: 0;
    }
    .brand-logo-text {
      line-height: 1.2;
    }
    .brand-logo-text span {
      color: var(--primary);
    }
    .nav-divider {
      height: 1px;
      background: var(--border);
      margin: 17px 10px 18px;
    }
    .nav-item {
      display: flex;
      align-items: center;
      gap: 12px;
      padding: 11px 12px;
      margin-bottom: 4px;
      border-radius: 11px;
      color: var(--text-dim);
      font-size: 14.5px;
      font-weight: 500;
      border: 1px solid transparent;
      transition: var(--transition);
    }
    .nav-item i {
      width: 20px;
      text-align: center;
      font-size: 15px;
      flex-shrink: 0;
    }
    .nav-item:hover {
      background: rgba(255, 255, 255, 0.05);
      color: var(--text);
      transform: translateX(2px);
    }
    .nav-item:focus-visible {
      outline: 2px solid var(--primary);
      outline-offset: -2px;
    }
    .nav-item.active {
      background: linear-gradient(135deg, rgba(255, 59, 59, 0.18), rgba(255, 176, 32, 0.08));
      color: var(--text);
      border-color: rgba(255, 59, 59, 0.24);
    }
    .nav-item.active i {
      color: var(--primary);
    }

    /* ========== 移动端顶栏 ========== */
    .header-bar {
      display: none;
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      height: 60px;
      z-index: 70;
      background: rgba(11, 18, 32, 0.94);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border);
      padding: 0 20px;
      align-items: center;
      justify-content: space-between;
    }
    .brand-mark {
      display: flex;
      align-items: center;
      gap: 8px;
      font-weight: 800;
      font-size: 18px;
      letter-spacing: 0.3px;
    }
    .brand-mark-name {
      line-height: 1.2;
    }
    .menu-toggle {
      width: 40px;
      height: 40px;
      border-radius: 11px;
      border: 1px solid var(--border);
      display: flex;
      align-items: center;
      justify-content: center;
      background: rgba(255, 255, 255, 0.04);
      transition: var(--transition);
    }
    .menu-toggle:hover {
      border-color: var(--border-strong);
      background: rgba(255, 255, 255, 0.08);
    }
    .menu-toggle:focus-visible {
      outline: 2px solid var(--primary);
      outline-offset: 2px;
    }
    .nav-mask {
      display: none;
    }

    /* ========== Hero ========== */
    .hero {
      position: relative;
      padding: 118px 0 108px;
      overflow: hidden;
      background-image: linear-gradient(135deg, rgba(11, 18, 32, 0.9), rgba(11, 18, 32, 0.96)), url('/assets/images/backpic/back-2.png');
      background-size: cover;
      background-position: center;
      background-repeat: no-repeat;
      border-bottom: 1px solid var(--border);
    }
    .hero::before {
      content: '';
      position: absolute;
      top: -80px;
      right: -40px;
      width: 340px;
      height: 340px;
      background: radial-gradient(circle, rgba(255, 59, 59, 0.18), transparent 68%);
      pointer-events: none;
    }
    .hero::after {
      content: '';
      position: absolute;
      bottom: -100px;
      left: 20%;
      width: 280px;
      height: 280px;
      background: radial-gradient(circle, rgba(255, 176, 32, 0.08), transparent 70%);
      pointer-events: none;
    }
    .hero-inner {
      position: relative;
      z-index: 1;
    }
    .status-bar {
      display: inline-flex;
      align-items: center;
      gap: 9px;
      padding: 7px 16px;
      border-radius: 40px;
      background: rgba(45, 212, 191, 0.1);
      border: 1px solid rgba(45, 212, 191, 0.25);
      color: #5eead4;
      font-size: 13px;
      font-weight: 500;
      margin-bottom: 16px;
    }
    .status-dot {
      width: 7px;
      height: 7px;
      background: #2dd4bf;
      border-radius: 50%;
      box-shadow: 0 0 8px rgba(45, 212, 191, 0.7);
      animation: pulse 1.8s ease-in-out infinite;
    }
    @keyframes pulse {
      0%,
      100% { opacity: 1; transform: scale(1); }
      50% { opacity: 0.5; transform: scale(0.8); }
    }
    .hero-tag {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 14px;
      border-radius: 40px;
      background: rgba(255, 59, 59, 0.14);
      border: 1px solid rgba(255, 59, 59, 0.3);
      color: var(--primary);
      font-size: 13px;
      font-weight: 600;
      letter-spacing: 0.5px;
      margin-bottom: 16px;
    }
    .hero h1 {
      font-size: 54px;
      font-weight: 900;
      letter-spacing: 1px;
      line-height: 1.14;
      margin: 20px 0 14px;
    }
    .hero-lead {
      font-size: 18px;
      color: var(--text-dim);
      max-width: 560px;
      margin-bottom: 32px;
      line-height: 1.8;
    }
    .hero-actions {
      display: flex;
      gap: 14px;
      flex-wrap: wrap;
    }
    .hero-metrics {
      display: flex;
      gap: 42px;
      margin-top: 58px;
      flex-wrap: wrap;
      padding-top: 28px;
      border-top: 1px solid var(--border);
      max-width: 620px;
    }
    .metric strong {
      display: block;
      font-size: 32px;
      font-weight: 800;
      color: var(--text);
      font-family: var(--font-mono);
      line-height: 1.2;
    }
    .metric span {
      font-size: 13px;
      color: var(--text-mute);
      letter-spacing: 0.3px;
    }

    /* ========== 按钮 ========== */
    .btn {
      display: inline-flex;
      align-items: center;
      gap: 9px;
      padding: 13px 26px;
      border-radius: 11px;
      font-size: 15px;
      font-weight: 600;
      line-height: 1;
      transition: var(--transition);
      border: 1px solid transparent;
    }
    .btn i {
      font-size: 14px;
    }
    .btn-primary {
      background: var(--primary);
      color: #fff;
      box-shadow: 0 6px 20px rgba(255, 59, 59, 0.3);
    }
    .btn-primary:hover {
      background: #ff5252;
      transform: translateY(-2px);
      box-shadow: 0 10px 28px rgba(255, 59, 59, 0.4);
    }
    .btn-primary:active {
      transform: translateY(0);
    }
    .btn-primary:focus-visible,
    .btn-ghost:focus-visible {
      outline: 2px solid #fff;
      outline-offset: 3px;
    }
    .btn-ghost {
      border-color: var(--border-strong);
      color: var(--text);
      background: rgba(255, 255, 255, 0.02);
    }
    .btn-ghost:hover {
      border-color: var(--primary);
      color: #fff;
      background: rgba(255, 59, 59, 0.09);
      transform: translateY(-2px);
    }
    .btn-ghost:active {
      transform: translateY(0);
    }

    /* ========== 板块 ========== */
    .section {
      padding: 100px 0;
    }
    .section-alt {
      background: var(--panel);
      border-top: 1px solid var(--border);
      border-bottom: 1px solid var(--border);
    }
    .section-dark {
      background: #0a1320;
      border-top: 1px solid var(--border);
      border-bottom: 1px solid var(--border);
    }
    .section-head {
      max-width: 640px;
      margin-bottom: 50px;
    }
    .section-head.center {
      margin-left: auto;
      margin-right: auto;
      text-align: center;
    }
    .section-kicker {
      display: block;
      font-size: 12px;
      letter-spacing: 3px;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 10px;
      text-transform: uppercase;
      font-family: var(--font-mono);
    }
    .section-head h2 {
      font-size: 33px;
      font-weight: 800;
      line-height: 1.3;
      margin-bottom: 10px;
      letter-spacing: 0.3px;
    }
    .section-head p {
      color: var(--text-dim);
      font-size: 15px;
      line-height: 1.8;
    }

    /* ========== 标签 / 徽章 ========== */
    .badge {
      display: inline-block;
      padding: 3px 11px;
      border-radius: 30px;
      background: rgba(255, 59, 59, 0.13);
      border: 1px solid rgba(255, 59, 59, 0.26);
      color: var(--primary);
      font-size: 12px;
      font-weight: 600;
      letter-spacing: 0.3px;
      line-height: 1.5;
    }
    .badge.badge-accent {
      background: rgba(255, 176, 32, 0.12);
      border-color: rgba(255, 176, 32, 0.3);
      color: var(--accent);
    }
    .badge.badge-green {
      background: rgba(45, 212, 191, 0.1);
      border-color: rgba(45, 212, 191, 0.28);
      color: #5eead4;
    }

    /* ========== 分类卡片网格 ========== */
    .cat-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .cat-card {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      overflow: hidden;
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }
    .cat-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-card);
      border-color: var(--border-strong);
    }
    .cat-img {
      height: 150px;
      overflow: hidden;
      position: relative;
    }
    .cat-img::after {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, transparent 50%, rgba(11, 18, 32, 0.6));
      pointer-events: none;
    }
    .cat-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.6s ease;
    }
    .cat-card:hover .cat-img img {
      transform: scale(1.06);
    }
    .cat-body {
      padding: 22px 22px 24px;
      flex: 1;
      display: flex;
      flex-direction: column;
    }
    .cat-body h3 {
      font-size: 19px;
      font-weight: 700;
      margin: 10px 0 8px;
      line-height: 1.4;
    }
    .cat-body p {
      font-size: 14px;
      color: var(--text-dim);
      margin-bottom: 16px;
      line-height: 1.75;
      flex: 1;
    }
    .card-link {
      font-size: 14px;
      font-weight: 600;
      color: var(--text);
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .card-link i {
      font-size: 13px;
      transition: transform 0.24s ease;
    }
    .card-link:hover {
      color: var(--primary);
    }
    .card-link:hover i {
      transform: translateX(4px);
    }

    /* ========== 特色功能 ========== */
    .feat-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .feat-card {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 32px 26px;
      transition: var(--transition);
    }
    .feat-card:hover {
      border-color: rgba(255, 59, 59, 0.32);
      transform: translateY(-4px);
      box-shadow: var(--shadow-card);
    }
    .feat-icon {
      width: 54px;
      height: 54px;
      border-radius: 14px;
      background: linear-gradient(135deg, rgba(255, 59, 59, 0.2), rgba(255, 176, 32, 0.1));
      border: 1px solid rgba(255, 59, 59, 0.26);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      font-size: 21px;
      margin-bottom: 20px;
      box-shadow: 0 6px 16px rgba(255, 59, 59, 0.12);
    }
    .feat-card h3 {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 8px;
    }
    .feat-card p {
      font-size: 14px;
      color: var(--text-dim);
      line-height: 1.75;
    }

    /* ========== 流程 ========== */
    .step-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 26px;
    }
    .step-item {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 38px 30px 34px;
      position: relative;
      overflow: hidden;
      transition: var(--transition);
    }
    .step-item:hover {
      border-color: rgba(255, 59, 59, 0.28);
      transform: translateY(-3px);
    }
    .step-item::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      width: 3px;
      height: 0;
      background: var(--primary);
      transition: height 0.4s ease;
    }
    .step-item:hover::before {
      height: 100%;
    }
    .step-num {
      font-family: var(--font-mono);
      font-size: 46px;
      font-weight: 800;
      color: rgba(255, 59, 59, 0.28);
      line-height: 1;
      display: block;
      margin-bottom: 20px;
    }
    .step-item h3 {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 8px;
    }
    .step-item p {
      font-size: 14px;
      color: var(--text-dim);
      line-height: 1.75;
    }

    /* ========== 精选列表 ========== */
    .list-panel {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .list-item {
      display: flex;
      align-items: center;
      gap: 20px;
      background: rgba(255, 255, 255, 0.02);
      border: 1px solid var(--border);
      border-radius: var(--radius-sm);
      padding: 16px 20px;
      transition: var(--transition);
    }
    .list-item:hover {
      background: rgba(255, 255, 255, 0.05);
      border-color: var(--border-strong);
      transform: translateX(4px);
    }
    .list-item img {
      width: 90px;
      height: 64px;
      border-radius: 9px;
      object-fit: cover;
      flex-shrink: 0;
      border: 1px solid var(--border);
    }
    .list-info {
      flex: 1;
      min-width: 0;
    }
    .list-info .badge {
      margin-bottom: 4px;
    }
    .list-info h3 {
      font-size: 16.5px;
      font-weight: 600;
      margin-bottom: 3px;
      line-height: 1.4;
    }
    .list-info p {
      font-size: 13.5px;
      color: var(--text-dim);
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
      line-height: 1.6;
    }
    .list-meta {
      font-size: 12px;
      color: var(--text-mute);
      font-family: var(--font-mono);
      white-space: nowrap;
      flex-shrink: 0;
    }

    /* ========== FAQ ========== */
    .faq-list {
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .faq-item {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius-sm);
      padding: 0 22px;
      transition: var(--transition);
    }
    .faq-item:hover {
      border-color: var(--border-strong);
      background: var(--surface-hover);
    }
    .faq-item summary {
      list-style: none;
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 19px 0;
      cursor: pointer;
      font-weight: 600;
      font-size: 15.5px;
      gap: 16px;
      user-select: none;
    }
    .faq-item summary::-webkit-details-marker {
      display: none;
    }
    .faq-item summary i {
      color: var(--text-mute);
      font-size: 13px;
      transition: transform 0.3s ease;
      flex-shrink: 0;
    }
    .faq-item[open] summary i {
      transform: rotate(180deg);
      color: var(--primary);
    }
    .faq-item p {
      padding-bottom: 20px;
      font-size: 14px;
      color: var(--text-dim);
      line-height: 1.85;
      border-top: 1px solid var(--border);
      padding-top: 16px;
    }

    /* ========== CTA ========== */
    .cta-section {
      padding-top: 30px;
      padding-bottom: 90px;
    }
    .cta-panel {
      background: linear-gradient(135deg, rgba(255, 59, 59, 0.13), rgba(255, 176, 32, 0.06));
      border: 1px solid rgba(255, 59, 59, 0.24);
      border-radius: var(--radius);
      padding: 58px 48px;
      text-align: center;
      position: relative;
      overflow: hidden;
    }
    .cta-panel::before {
      content: '';
      position: absolute;
      top: -110px;
      left: 50%;
      transform: translateX(-50%);
      width: 380px;
      height: 220px;
      background: radial-gradient(circle, rgba(255, 59, 59, 0.2), transparent 70%);
      pointer-events: none;
    }
    .cta-panel h2 {
      font-size: 29px;
      font-weight: 800;
      margin-bottom: 10px;
      position: relative;
    }
    .cta-panel p {
      color: var(--text-dim);
      font-size: 15px;
      max-width: 500px;
      margin: 0 auto 30px;
      position: relative;
      line-height: 1.8;
    }
    .cta-actions {
      display: flex;
      gap: 14px;
      justify-content: center;
      flex-wrap: wrap;
      position: relative;
    }

    /* ========== 页脚 ========== */
    .footer {
      margin-left: var(--nav-width);
      background: #0a1320;
      border-top: 1px solid var(--border);
      padding: 60px 0 30px;
    }
    .footer-inner {
      display: flex;
      justify-content: space-between;
      gap: 44px;
      flex-wrap: wrap;
    }
    .footer-brand {
      max-width: 350px;
    }
    .brand-str {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 21px;
      font-weight: 800;
      margin-bottom: 14px;
      letter-spacing: 0.4px;
    }
    .fd {
      width: 8px;
      height: 8px;
      background: var(--primary);
      border-radius: 50%;
      display: inline-block;
      box-shadow: 0 0 10px rgba(255, 59, 59, 0.5);
      flex-shrink: 0;
    }
    .footer-brand p {
      font-size: 14px;
      color: var(--text-dim);
      line-height: 1.85;
    }
    .footer-links {
      display: flex;
      gap: 64px;
    }
    .footer-links h4 {
      font-size: 13.5px;
      color: var(--text-mute);
      margin-bottom: 14px;
      letter-spacing: 1.5px;
      font-weight: 700;
      text-transform: uppercase;
    }
    .footer-links ul {
      list-style: none;
    }
    .footer-links li {
      margin-bottom: 9px;
    }
    .footer-links a {
      font-size: 14px;
      color: var(--text-dim);
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .footer-links a::before {
      content: '›';
      color: var(--text-mute);
      font-size: 14px;
      transition: var(--transition);
    }
    .footer-links a:hover {
      color: var(--primary);
    }
    .footer-links a:hover::before {
      color: var(--primary);
      transform: translateX(2px);
    }
    .footer-copy {
      margin-top: 46px;
      padding-top: 22px;
      border-top: 1px solid var(--border);
      text-align: center;
    }
    .footer-copy p {
      font-size: 13px;
      color: var(--text-mute);
    }

    /* ========== 响应式：平板 ========== */
    @media (max-width: 1100px) {
      .cat-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .feat-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .hero h1 {
        font-size: 44px;
      }
    }

    /* ========== 响应式：移动端 ========== */
    @media (max-width: 768px) {
      :root {
        --nav-width: 0px;
      }
      .header-bar {
        display: flex;
      }
      .main-content {
        margin-left: 0;
        padding-top: 60px;
      }
      .footer {
        margin-left: 0;
      }
      .side-nav {
        transform: translateX(-105%);
        width: 280px;
        transition: transform 0.32s cubic-bezier(0.22, 1, 0.36, 1);
        box-shadow: none;
      }
      .side-nav.open {
        transform: translateX(0);
        box-shadow: 0 0 70px rgba(0, 0, 0, 0.55);
      }
      .nav-mask.show {
        display: block;
        position: fixed;
        inset: 0;
        background: rgba(0, 0, 0, 0.62);
        z-index: 55;
        backdrop-filter: blur(2px);
      }
      .container {
        padding: 0 22px;
      }
      .section {
        padding: 68px 0;
      }
      .hero {
        padding: 84px 0 76px;
      }
      .hero h1 {
        font-size: 36px;
      }
      .hero-lead {
        font-size: 16px;
      }
      .hero-metrics {
        gap: 24px;
        margin-top: 40px;
      }
      .metric strong {
        font-size: 26px;
      }
      .section-head h2 {
        font-size: 28px;
      }
      .step-grid {
        grid-template-columns: 1fr;
        gap: 18px;
      }
      .step-item {
        padding: 28px 24px;
      }
      .cta-section {
        padding-bottom: 60px;
      }
      .cta-panel {
        padding: 44px 26px;
      }
      .cta-panel h2 {
        font-size: 24px;
      }
      .footer-inner {
        flex-direction: column;
        gap: 32px;
      }
      .footer-links {
        gap: 36px;
        flex-wrap: wrap;
      }
      .footer-links > div {
        flex: 0 0 auto;
      }
    }

    /* ========== 响应式：手机 ========== */
    @media (max-width: 520px) {
      .cat-grid,
      .feat-grid {
        grid-template-columns: 1fr;
        gap: 18px;
      }
      .hero {
        padding: 64px 0 58px;
      }
      .hero h1 {
        font-size: 30px;
        letter-spacing: 0.5px;
      }
      .hero-lead {
        font-size: 15px;
        margin-bottom: 24px;
      }
      .hero-actions {
        width: 100%;
        flex-direction: column;
      }
      .hero-actions .btn {
        width: 100%;
        justify-content: center;
      }
      .hero-metrics {
        gap: 12px;
        justify-content: space-between;
        margin-top: 32px;
      }
      .metric {
        min-width: 82px;
      }
      .metric strong {
        font-size: 21px;
      }
      .metric span {
        font-size: 12px;
      }
      .section-head {
        margin-bottom: 36px;
      }
      .section-head h2 {
        font-size: 25px;
      }
      .section-head p {
        font-size: 14px;
      }
      .cta-panel {
        padding: 36px 20px;
        border-radius: 14px;
      }
      .cta-panel h2 {
        font-size: 21px;
      }
      .list-item {
        flex-wrap: wrap;
        gap: 12px;
        padding: 14px;
      }
      .list-item img {
        width: 100%;
        height: auto;
        max-height: 130px;
      }
      .list-info p {
        white-space: normal;
      }
      .list-meta {
        margin-left: auto;
      }
      .footer-copy p {
        font-size: 12px;
        line-height: 1.7;
      }
    }