/* roulang page: index */
:root{
  --primary:#0b1a2e;--primary-light:#1a3a5c;--primary-lighter:#244b72;
  --accent:#e8630a;--accent-light:#ff8c42;--accent-dark:#c9500a;
  --bg:#f5f7fa;--surface:#ffffff;--text:#1a2b3c;--text-muted:#6a7b8d;
  --border:#e3e8ef;--radius:16px;--radius-sm:10px;
  --shadow:0 4px 24px rgba(11,26,46,.06);--shadow-lg:0 12px 36px rgba(11,26,46,.12);
  --transition:all .3s ease;--sidebar-w:250px;
  --font-main:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font-main);background:var(--bg);color:var(--text);line-height:1.7;font-size:16px}
a{text-decoration:none;color:inherit;transition:var(--transition)}
ul,ol{list-style:none}
img{max-width:100%;display:block}
button,input{font-family:inherit;font-size:inherit}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:72px 0}
.section-header{text-align:center;max-width:720px;margin:0 auto 48px}
.section-header .tag{display:inline-block;background:rgba(232,99,10,.12);color:var(--accent);padding:6px 16px;border-radius:30px;font-size:14px;font-weight:600;letter-spacing:.5px;margin-bottom:16px}
.section-header h2{font-size:32px;font-weight:800;line-height:1.3;color:var(--primary);margin-bottom:12px}
.section-header p{color:var(--text-muted);font-size:16px}

/* 布局 */
.layout{display:flex;min-height:100vh}
.sidebar{width:var(--sidebar-w);background:var(--primary);position:fixed;inset:0 auto 0 0;z-index:200;display:flex;flex-direction:column;padding:28px 20px;overflow-y:auto}
.sidebar-inner{display:flex;flex-direction:column;height:100%}
.brand{display:flex;align-items:center;gap:12px;padding:6px 4px 22px;border-bottom:1px solid rgba(255,255,255,.08)}
.brand-icon{width:44px;height:44px;background:linear-gradient(135deg,var(--accent),var(--accent-light));border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:800;color:#fff;flex-shrink:0;box-shadow:0 6px 20px rgba(232,99,10,.35)}
.brand-text{font-size:15px;font-weight:700;color:#fff;line-height:1.4;letter-spacing:.5px}
.side-nav{display:flex;flex-direction:column;gap:6px;margin-top:28px}
.nav-link{display:flex;align-items:center;gap:14px;padding:13px 16px;border-radius:12px;color:rgba(255,255,255,.7);font-size:15px;font-weight:500;transition:var(--transition)}
.nav-link i{width:20px;text-align:center;font-size:17px}
.nav-link:hover{background:rgba(255,255,255,.08);color:#fff;transform:translateX(4px)}
.nav-link.active{background:rgba(232,99,10,.2);color:var(--accent-light);font-weight:600;box-shadow:inset 3px 0 0 var(--accent)}
.sidebar-card{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.1);border-radius:16px;padding:20px;margin-top:auto}
.sidebar-card h4{color:#fff;font-size:15px;margin-bottom:8px}
.sidebar-card p{color:rgba(255,255,255,.65);font-size:13px;line-height:1.6;margin-bottom:14px}
.sidebar-copy{color:rgba(255,255,255,.35);font-size:12px;text-align:center;margin-top:20px;padding-top:16px;border-top:1px solid rgba(255,255,255,.08)}
.main{flex:1;margin-left:var(--sidebar-w);min-width:0}

/* 移动端顶部 */
.mobile-header{display:none;position:fixed;top:0;left:0;right:0;z-index:300;background:var(--primary);padding:14px 20px;align-items:center;justify-content:space-between;box-shadow:0 4px 20px rgba(0,0,0,.15)}
.brand-mobile{color:#fff;font-weight:700;font-size:16px;display:flex;align-items:center;gap:10px}
.brand-mobile .brand-icon{width:36px;height:36px;font-size:14px;border-radius:10px}
.menu-toggle{background:none;border:none;color:#fff;font-size:22px;cursor:pointer;padding:4px 8px;border-radius:8px}
.menu-toggle:hover{background:rgba(255,255,255,.1)}
.drawer-mask{display:none;position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:400;opacity:0;transition:opacity .3s}
.drawer-mask.show{display:block;opacity:1}
.drawer{position:fixed;top:0;left:0;bottom:0;width:280px;background:var(--primary);z-index:500;transform:translateX(-100%);transition:transform .35s ease;padding:24px 20px;display:flex;flex-direction:column}
.drawer.open{transform:translateX(0)}
.drawer-header{display:flex;align-items:center;gap:12px;padding-bottom:20px;border-bottom:1px solid rgba(255,255,255,.08);color:#fff;font-weight:700;font-size:15px}
.drawer-close{margin-left:auto;background:none;border:none;color:rgba(255,255,255,.7);font-size:20px;cursor:pointer;padding:4px 8px}
.drawer-nav{display:flex;flex-direction:column;gap:6px;margin-top:24px}

/* 按钮 */
.btn{display:inline-flex;align-items:center;gap:8px;padding:13px 28px;border-radius:12px;font-weight:600;font-size:15px;border:none;cursor:pointer;transition:var(--transition);line-height:1.4}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 8px 24px rgba(232,99,10,.25)}
.btn-primary:hover{background:var(--accent-dark);transform:translateY(-2px);box-shadow:0 12px 30px rgba(232,99,10,.35)}
.btn-outline{background:rgba(255,255,255,.08);color:#fff;border:1px solid rgba(255,255,255,.25)}
.btn-outline:hover{background:rgba(255,255,255,.18);border-color:#fff;transform:translateY(-2px)}
.btn-ghost{background:rgba(232,99,10,.1);color:var(--accent);border:1px solid rgba(232,99,10,.2)}
.btn-ghost:hover{background:rgba(232,99,10,.18);transform:translateY(-2px)}
.btn-light{background:#fff;color:var(--primary)}
.btn-light:hover{background:#f0f2f5;transform:translateY(-2px)}
.btn-sm{padding:8px 18px;font-size:13px;border-radius:8px}

/* Hero */
.hero{position:relative;background-size:cover;background-position:center;padding:130px 0 100px;overflow:hidden;display:flex;align-items:center}
.hero::before{content:'';position:absolute;inset:0;background:linear-gradient(100deg,rgba(11,26,46,.95) 0%,rgba(11,26,46,.75) 45%,rgba(11,26,46,.35) 100%)}
.hero .container{position:relative;z-index:2;max-width:1200px;margin:0 auto;padding:0 24px;width:100%}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.18);backdrop-filter:blur(10px);border-radius:30px;padding:8px 20px;color:#fff;font-size:14px;margin-bottom:24px}
.hero-badge i{color:var(--accent-light)}
.hero h1{font-size:46px;font-weight:800;line-height:1.25;color:#fff;margin-bottom:20px;letter-spacing:1px}
.hero h1 span{color:var(--accent-light)}
.hero p{font-size:18px;color:rgba(255,255,255,.8);max-width:600px;line-height:1.8;margin-bottom:36px}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap}
.hero-meta{display:flex;flex-wrap:wrap;gap:28px;margin-top:48px;padding-top:28px;border-top:1px solid rgba(255,255,255,.15)}
.hero-meta-item{color:rgba(255,255,255,.85);font-size:14px;display:flex;align-items:center;gap:8px}
.hero-meta-item i{color:var(--accent-light)}

/* 板块标题 */
.block-title{font-size:28px;font-weight:800;color:var(--primary);margin-bottom:12px;line-height:1.3}
.block-desc{color:var(--text-muted);font-size:16px;max-width:640px;line-height:1.7}

/* 特点卡片 */
.features-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.feature-card{background:var(--surface);border-radius:var(--radius);padding:32px 26px;box-shadow:var(--shadow);border:1px solid var(--border);transition:var(--transition);position:relative;overflow:hidden}
.feature-card::after{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--accent),var(--accent-light));opacity:0;transition:var(--transition)}
.feature-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:transparent}
.feature-card:hover::after{opacity:1}
.feature-icon{width:56px;height:56px;border-radius:14px;background:linear-gradient(135deg,rgba(232,99,10,.12),rgba(232,99,10,.06));color:var(--accent);display:flex;align-items:center;justify-content:center;font-size:24px;margin-bottom:20px}
.feature-card h3{font-size:18px;font-weight:700;margin-bottom:10px;color:var(--primary)}
.feature-card p{font-size:14px;color:var(--text-muted);line-height:1.7}

/* 分类入口 */
.category-entry{background:var(--surface);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.category-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;background:linear-gradient(135deg,#0b1a2e,#1a3a5c);border-radius:24px;padding:48px;color:#fff;overflow:hidden;position:relative}
.category-grid::before{content:'';position:absolute;right:-80px;top:-80px;width:280px;height:280px;border-radius:50%;background:rgba(232,99,10,.2);filter:blur(60px)}
.category-grid::after{content:'';position:absolute;right:120px;bottom:-100px;width:200px;height:200px;border-radius:50%;background:rgba(255,255,255,.05)}
.category-info{position:relative;z-index:2}
.category-info .cat-tag{display:inline-block;background:rgba(232,99,10,.25);color:var(--accent-light);padding:6px 16px;border-radius:30px;font-size:13px;font-weight:600;margin-bottom:18px}
.category-info h2{font-size:32px;font-weight:800;margin-bottom:16px;line-height:1.3}
.category-info p{color:rgba(255,255,255,.75);font-size:16px;line-height:1.8;margin-bottom:28px}
.category-visual{position:relative;z-index:2;display:flex;justify-content:center;align-items:center}
.category-visual img{border-radius:20px;box-shadow:0 20px 50px rgba(0,0,0,.3);max-height:320px;width:100%;object-fit:cover}

/* 统计 */
.stats-band{background:var(--primary);position:relative;overflow:hidden;padding:70px 0}
.stats-band::after{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:32px;position:relative;z-index:2;text-align:center}
.stat-item h3{font-size:44px;font-weight:800;color:#fff;margin-bottom:8px;line-height:1.2}
.stat-item h3 span{color:var(--accent-light)}
.stat-item p{color:rgba(255,255,255,.65);font-size:15px}

/* 最新列表 */
.latest-wrap{background:var(--surface);border-radius:var(--radius);box-shadow:var(--shadow);border:1px solid var(--border);overflow:hidden}
.news-list{display:flex;flex-direction:column}
.info-card{display:flex;gap:20px;padding:28px;border-bottom:1px solid var(--border);transition:var(--transition);align-items:flex-start}
.info-card:last-child{border-bottom:none}
.info-card:hover{background:#f9fafc;transform:translateX(6px)}
.info-meta{display:flex;align-items:center;gap:14px;margin-bottom:10px;flex-wrap:wrap}
.info-meta .badge{background:rgba(232,99,10,.1);color:var(--accent);font-size:13px;font-weight:600;padding:4px 12px;border-radius:20px}
.info-meta time{color:var(--text-muted);font-size:13px;display:flex;align-items:center;gap:6px}
.info-card h3{font-size:18px;font-weight:700;color:var(--text);margin-bottom:8px;transition:var(--transition)}
.info-card:hover h3{color:var(--accent)}
.info-card p{color:var(--text-muted);font-size:14px;line-height:1.7}
.info-arrow{margin-left:auto;color:var(--border);font-size:18px;align-self:center;transition:var(--transition)}
.info-card:hover .info-arrow{color:var(--accent);transform:translateX(4px)}
.empty-tip{text-align:center;color:var(--text-muted);padding:48px 24px;font-size:15px}

/* 精选卡片 */
.curated-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.curated-card{background:var(--surface);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);border:1px solid var(--border);transition:var(--transition);display:flex;flex-direction:column}
.curated-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.curated-img{position:relative;overflow:hidden;aspect-ratio:16/10}
.curated-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.curated-card:hover .curated-img img{transform:scale(1.06)}
.curated-img .card-tag{position:absolute;top:16px;left:16px;z-index:2;background:var(--accent);color:#fff;font-size:12px;font-weight:600;padding:6px 14px;border-radius:20px;box-shadow:0 4px 12px rgba(232,99,10,.3)}
.curated-body{padding:24px;flex:1;display:flex;flex-direction:column}
.curated-body h3{font-size:17px;font-weight:700;color:var(--primary);margin-bottom:10px;line-height:1.5}
.curated-body p{font-size:14px;color:var(--text-muted);line-height:1.7;flex:1}
.curated-link{display:inline-flex;align-items:center;gap:8px;color:var(--accent);font-weight:600;font-size:14px;margin-top:18px}
.curated-link i{transition:var(--transition)}
.curated-link:hover i{transform:translateX(4px)}

/* 流程 */
.process-section{background:var(--primary);position:relative;overflow:hidden;padding:80px 0}
.process-section::before{content:'';position:absolute;inset:0;background:url('/assets/images/backpic/back-3.png') center/cover no-repeat;opacity:.08}
.process-section .container{position:relative;z-index:2}
.process-section .section-header h2{color:#fff}
.process-section .section-header p{color:rgba(255,255,255,.6)}
.process-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:48px}
.process-step{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.1);border-radius:20px;padding:32px 22px;text-align:center;position:relative;transition:var(--transition);backdrop-filter:blur(8px)}
.process-step:hover{background:rgba(255,255,255,.1);transform:translateY(-4px)}
.step-num{width:48px;height:48px;border-radius:50%;background:linear-gradient(135deg,var(--accent),var(--accent-light));color:#fff;font-weight:800;font-size:20px;display:flex;align-items:center;justify-content:center;margin:0 auto 20px;box-shadow:0 8px 24px rgba(232,99,10,.35)}
.process-step h3{color:#fff;font-size:17px;margin-bottom:10px}
.process-step p{color:rgba(255,255,255,.6);font-size:14px;line-height:1.7}
.process-arrow{color:rgba(255,255,255,.3);font-size:24px;position:absolute;top:50%;right:-18px;transform:translateY(-50%);z-index:3}

/* FAQ */
.faq-list{max-width:840px;margin:0 auto;display:flex;flex-direction:column;gap:14px}
details.faq-item{background:var(--surface);border-radius:14px;border:1px solid var(--border);overflow:hidden;transition:var(--transition);box-shadow:var(--shadow)}
details.faq-item[open]{border-color:rgba(232,99,10,.3);box-shadow:0 8px 30px rgba(232,99,10,.08)}
details.faq-item summary{cursor:pointer;padding:22px 28px;font-weight:600;font-size:16px;color:var(--primary);display:flex;align-items:center;gap:14px;list-style:none;transition:var(--transition)}
details.faq-item summary::-webkit-details-marker{display:none}
details.faq-item summary::before{content:'\f059';font-family:'Font Awesome 6 Free';font-weight:900;color:var(--accent);font-size:18px;flex-shrink:0}
details.faq-item summary::after{content:'\f078';font-family:'Font Awesome 6 Free';font-weight:900;margin-left:auto;color:var(--text-muted);font-size:14px;transition:var(--transition)}
details.faq-item[open] summary::after{transform:rotate(180deg)}
details.faq-item .faq-body{padding:0 28px 22px 60px;color:var(--text-muted);font-size:15px;line-height:1.8}

/* CTA */
.cta-section{background:linear-gradient(135deg,var(--accent),var(--accent-dark));position:relative;overflow:hidden;padding:80px 0}
.cta-section::before{content:'';position:absolute;inset:0;background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;opacity:.1}
.cta-section .container{position:relative;z-index:2;text-align:center;max-width:680px}
.cta-section h2{color:#fff;font-size:34px;font-weight:800;margin-bottom:16px;line-height:1.3}
.cta-section p{color:rgba(255,255,255,.85);font-size:17px;margin-bottom:32px;line-height:1.8}
.cta-actions{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}

/* 页脚 */
.footer{background:#081624;padding:64px 0 32px;color:rgba(255,255,255,.7)}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:48px;margin-bottom:40px}
.footer-brand h3{color:#fff;font-size:18px;margin-bottom:16px;display:flex;align-items:center;gap:10px}
.footer-brand p{font-size:14px;line-height:1.8;max-width:320px}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:18px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.6);display:inline-flex;align-items:center;gap:8px}
.footer-col a:hover{color:var(--accent-light)}
.footer-col a i{font-size:12px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:24px;text-align:center;font-size:13px;color:rgba(255,255,255,.4);line-height:1.8}

/* 内页 Hero */
.page-hero{position:relative;background-size:cover;background-position:center;padding:90px 0 60px}
.page-hero::before{content:'';position:absolute;inset:0;background:linear-gradient(100deg,rgba(11,26,46,.92),rgba(11,26,46,.7))}
.page-hero .container{position:relative;z-index:2}
.breadcrumb{display:flex;align-items:center;gap:10px;color:rgba(255,255,255,.6);font-size:14px;margin-bottom:16px}
.breadcrumb a:hover{color:var(--accent-light)}
.breadcrumb i{font-size:12px}
.page-hero h1{color:#fff;font-size:36px;font-weight:800;line-height:1.3;margin-bottom:16px}
.page-hero .article-meta{display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.page-hero .badge{background:rgba(232,99,10,.25);color:var(--accent-light);padding:6px 16px;border-radius:20px;font-size:13px;font-weight:600}
.page-hero time{color:rgba(255,255,255,.65);font-size:14px;display:flex;align-items:center;gap:6px}
.page-hero .page-desc{color:rgba(255,255,255,.75);font-size:16px;max-width:640px;line-height:1.8}

/* 文章正文 */
.article-body{padding:60px 0 72px}
.article-shell{background:var(--surface);border-radius:var(--radius);box-shadow:var(--shadow);border:1px solid var(--border);padding:48px}
.article-content{font-size:16px;line-height:2;color:#2c3e50}
.article-content p{margin-bottom:20px}
.article-content h2{font-size:24px;color:var(--primary);margin:36px 0 16px;font-weight:700}
.article-content h3{font-size:20px;color:var(--primary);margin:28px 0 12px;font-weight:700}
.article-content ul,.article-content ol{margin:0 0 20px 24px}
.article-content li{margin-bottom:10px}
.article-content img{border-radius:12px;margin:24px 0}
.article-content blockquote{border-left:4px solid var(--accent);background:rgba(232,99,10,.05);padding:16px 20px;margin:24px 0;border-radius:0 12px 12px 0;color:var(--text-muted)}
.article-content a{color:var(--accent);text-decoration:underline}
.empty-article{text-align:center;padding:60px 0}
.empty-article h3{font-size:24px;margin-bottom:12px;color:var(--primary)}
.empty-article p{color:var(--text-muted);margin-bottom:24px}

/* 指南列表 */
.guide-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.guide-card{background:var(--surface);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);border:1px solid var(--border);transition:var(--transition);display:flex;flex-direction:column}
.guide-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.guide-img{aspect-ratio:16/9;overflow:hidden}
.guide-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.guide-card:hover .guide-img img{transform:scale(1.05)}
.guide-body{padding:24px;flex:1;display:flex;flex-direction:column}
.guide-body .badge{background:rgba(232,99,10,.1);color:var(--accent);font-size:12px;font-weight:600;padding:4px 12px;border-radius:20px;align-self:flex-start;margin-bottom:12px}
.guide-body h3{font-size:18px;font-weight:700;color:var(--primary);margin-bottom:8px;line-height:1.5}
.guide-body p{font-size:14px;color:var(--text-muted);line-height:1.7;flex:1}

/* 响应式 */
@media (max-width:1024px){
  .features-grid{grid-template-columns:repeat(2,1fr);gap:20px}
  .curated-grid{grid-template-columns:repeat(2,1fr)}
  .process-steps{grid-template-columns:repeat(2,1fr);gap:16px}
  .category-grid{grid-template-columns:1fr;padding:36px}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:24px}
  .guide-grid{grid-template-columns:repeat(2,1fr)}
  .hero h1{font-size:38px}
  .section-header h2{font-size:28px}
}
@media (max-width:768px){
  .sidebar{display:none}
  .main{margin-left:0}
  .mobile-header{display:flex}
  .hero{padding:110px 0 60px}
  .hero h1{font-size:30px}
  .hero p{font-size:15px}
  .hero-actions .btn{width:100%;justify-content:center}
  .features-grid{grid-template-columns:1fr}
  .curated-grid{grid-template-columns:1fr}
  .process-steps{grid-template-columns:1fr}
  .process-arrow{display:none}
  .stats-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .article-shell{padding:28px 20px}
  .page-hero h1{font-size:28px}
  .section{padding:48px 0}
  .section-header{margin-bottom:32px}
  .guide-grid{grid-template-columns:1fr}
  .category-grid{padding:28px}
  .category-info h2{font-size:26px}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .hero h1{font-size:25px}
  .stats-grid{grid-template-columns:1fr;gap:16px}
  .stat-item h3{font-size:32px}
  .brand{font-size:14px}
  .hero-badge{font-size:12px;padding:6px 14px}
}

/* 焦点状态 */
a:focus-visible,.btn:focus-visible,summary:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px}

/* roulang page: category1 */
:root{
  --primary:#0f1e35;
  --primary-light:#1a2d4a;
  --primary-dark:#091527;
  --accent:#e6a817;
  --accent-hover:#d4970f;
  --accent-rgb:230,168,23;
  --surface:#ffffff;
  --bg:#f4f6fa;
  --text:#16213a;
  --text-muted:#64748b;
  --border:#e2e8f0;
  --radius:14px;
  --radius-lg:22px;
  --radius-sm:8px;
  --shadow-sm:0 2px 10px rgba(15,30,53,.06);
  --shadow:0 6px 24px rgba(15,30,53,.08);
  --shadow-lg:0 14px 40px rgba(15,30,53,.12);
  --transition:all .3s ease;
  --sidebar-w:248px;
}
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;background:var(--bg);color:var(--text);line-height:1.7;font-size:16px;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit;transition:var(--transition)}
ul,ol{list-style:none}
button{border:none;background:none;cursor:pointer;font-family:inherit}
input,textarea{font-family:inherit}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 28px;border-radius:50px;font-size:15px;font-weight:600;transition:var(--transition);line-height:1.4;letter-spacing:.2px}
.btn-accent{background:var(--accent);color:#0f1e35;box-shadow:0 4px 16px rgba(var(--accent-rgb),.35)}
.btn-accent:hover{background:var(--accent-hover);transform:translateY(-2px);box-shadow:0 8px 24px rgba(var(--accent-rgb),.4)}
.btn-ghost{background:rgba(255,255,255,.12);color:#fff;border:1px solid rgba(255,255,255,.3);backdrop-filter:blur(4px)}
.btn-ghost:hover{background:rgba(255,255,255,.2);transform:translateY(-2px)}
.btn-outline{background:transparent;border:2px solid var(--primary);color:var(--primary);padding:10px 26px}
.btn-outline:hover{background:var(--primary);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow)}
/* ===== Sidebar ===== */
.sidebar{
  position:fixed;left:0;top:0;bottom:0;width:var(--sidebar-w);
  background:linear-gradient(180deg,var(--primary) 0%,var(--primary-dark) 100%);
  color:#fff;z-index:200;display:flex;flex-direction:column;
  padding:28px 0 20px;box-shadow:4px 0 30px rgba(15,30,53,.15);
  transition:transform .35s cubic-bezier(.4,0,.2,1);
}
.sidebar::before{
  content:'';position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(circle at 30% 20%,rgba(230,168,23,.08),transparent 60%);
}
.sidebar-brand{padding:0 24px 28px;border-bottom:1px solid rgba(255,255,255,.08);position:relative}
.brand-link{display:flex;align-items:center;gap:12px}
.brand-icon{
  display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:10px;flex-shrink:0;
  background:linear-gradient(135deg,var(--accent),#f5c745);color:var(--primary);
  font-weight:800;font-size:15px;letter-spacing:-.5px;
  box-shadow:0 4px 14px rgba(var(--accent-rgb),.3);
}
.brand-text{font-size:15px;font-weight:700;line-height:1.3;color:#fff;letter-spacing:.3px}
.side-nav{padding:24px 16px;display:flex;flex-direction:column;gap:6px;flex:1;position:relative}
.nav-link{
  display:flex;align-items:center;gap:14px;padding:13px 16px;border-radius:12px;
  color:rgba(255,255,255,.7);font-size:15px;font-weight:500;transition:var(--transition);
  border:1px solid transparent;position:relative;
}
.nav-link i{width:20px;text-align:center;font-size:16px}
.nav-link:hover{background:rgba(255,255,255,.06);color:#fff;transform:translateX(4px)}
.nav-link.active{
  background:linear-gradient(135deg,rgba(var(--accent-rgb),.2),rgba(var(--accent-rgb),.08));
  color:var(--accent);border-color:rgba(var(--accent-rgb),.25);font-weight:600;
  box-shadow:0 4px 16px rgba(var(--accent-rgb),.12);
}
.nav-link.active::before{
  content:'';position:absolute;left:-16px;top:50%;transform:translateY(-50%);
  width:4px;height:24px;background:var(--accent);border-radius:0 4px 4px 0;
}
.sidebar-foot{padding:18px 24px 4px;border-top:1px solid rgba(255,255,255,.08);position:relative}
.sidebar-foot p{font-size:12px;color:rgba(255,255,255,.45);letter-spacing:.5px;text-align:center}
/* ===== Main ===== */
.main-wrapper{margin-left:var(--sidebar-w);min-height:100vh;display:flex;flex-direction:column}
.mobile-header{
  display:none;position:sticky;top:0;z-index:150;
  background:rgba(15,30,53,.95);backdrop-filter:blur(12px);
  padding:14px 20px;align-items:center;gap:14px;
  box-shadow:0 2px 12px rgba(15,30,53,.15);
}
.menu-btn{width:40px;height:40px;border-radius:10px;background:rgba(255,255,255,.1);color:#fff;font-size:18px;display:flex;align-items:center;justify-content:center;transition:var(--transition)}
.menu-btn:hover{background:rgba(255,255,255,.2)}
.mobile-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:15px}
.sidebar-overlay{
  display:none;position:fixed;inset:0;background:rgba(9,21,39,.6);
  z-index:190;backdrop-filter:blur(2px);opacity:0;transition:opacity .3s;
}
.sidebar-overlay.show{display:block;opacity:1}
/* ===== Hero ===== */
.page-hero{
  position:relative;padding:90px 0 80px;color:#fff;overflow:hidden;
  background-size:cover;background-position:center;background-repeat:no-repeat;
}
.page-hero::before{
  content:'';position:absolute;inset:0;
  background:linear-gradient(135deg,rgba(9,21,39,.95) 0%,rgba(15,30,53,.85) 50%,rgba(15,30,53,.5) 100%);
}
.page-hero::after{
  content:'';position:absolute;inset:0;
  background:radial-gradient(circle at 80% 30%,rgba(230,168,23,.15),transparent 50%);
  pointer-events:none;
}
.hero-content{position:relative;z-index:2;max-width:760px}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;padding:6px 16px;border-radius:50px;
  background:rgba(var(--accent-rgb),.2);border:1px solid rgba(var(--accent-rgb),.4);
  color:var(--accent);font-size:13px;font-weight:600;letter-spacing:.5px;
  margin-bottom:20px;
}
.hero-badge i{font-size:13px}
.page-hero h1{
  font-size:40px;line-height:1.3;font-weight:800;letter-spacing:-.5px;margin-bottom:16px;
  text-shadow:0 2px 12px rgba(0,0,0,.2);
}
.page-hero p{
  font-size:17px;color:rgba(255,255,255,.85);line-height:1.7;margin-bottom:32px;max-width:560px;
}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
/* ===== Sections ===== */
.section{padding:80px 0;position:relative}
.section-alt{background:var(--surface)}
.section-dark{
  background:linear-gradient(160deg,var(--primary) 0%,var(--primary-dark) 100%);
  color:#fff;
}
.section-head{margin-bottom:48px;max-width:680px}
.section-tag{
  display:inline-block;padding:4px 14px;border-radius:50px;
  background:rgba(var(--accent-rgb),.12);color:var(--accent);
  font-size:13px;font-weight:600;letter-spacing:.6px;margin-bottom:12px;
}
.section-dark .section-tag{background:rgba(var(--accent-rgb),.2);color:var(--accent)}
.section-head h2{
  font-size:32px;line-height:1.35;font-weight:800;color:var(--text);letter-spacing:-.3px;margin-bottom:12px;
}
.section-dark .section-head h2{color:#fff}
.section-head p{font-size:16px;color:var(--text-muted);line-height:1.7}
.section-dark .section-head p{color:rgba(255,255,255,.7)}
/* ===== Grid ===== */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:32px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
/* ===== Cards ===== */
.card{
  background:var(--surface);border-radius:var(--radius-lg);padding:32px 28px;
  box-shadow:var(--shadow);border:1px solid rgba(226,232,240,.6);
  transition:var(--transition);position:relative;overflow:hidden;
}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.card-icon{
  width:52px;height:52px;border-radius:14px;display:flex;align-items:center;justify-content:center;
  font-size:20px;margin-bottom:18px;position:relative;
  background:linear-gradient(135deg,rgba(var(--accent-rgb),.15),rgba(var(--accent-rgb),.05));
  color:var(--accent);border:1px solid rgba(var(--accent-rgb),.2);
}
.access-card h3{font-size:17px;font-weight:700;margin-bottom:10px;color:var(--text)}
.access-card p{font-size:14px;color:var(--text-muted);line-height:1.7}
.card-tag{
  position:absolute;top:18px;right:18px;padding:4px 12px;border-radius:50px;
  font-size:12px;font-weight:600;background:rgba(var(--accent-rgb),.1);color:var(--accent);
  border:1px solid rgba(var(--accent-rgb),.2);
}
/* ===== Steps ===== */
.steps-row{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:40px}
.step-card{
  background:var(--surface);border-radius:var(--radius-lg);padding:36px 24px 28px;
  text-align:center;box-shadow:var(--shadow);border:1px solid rgba(226,232,240,.6);
  transition:var(--transition);position:relative;
}
.step-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.step-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:48px;height:48px;border-radius:50%;background:var(--primary);color:#fff;
  font-size:20px;font-weight:800;margin-bottom:16px;
  box-shadow:0 4px 14px rgba(15,30,53,.2);
  position:relative;z-index:1;
}
.step-card:nth-child(1) .step-num{background:linear-gradient(135deg,#3b82f6,#2563eb)}
.step-card:nth-child(2) .step-num{background:linear-gradient(135deg,#10b981,#059669)}
.step-card:nth-child(3) .step-num{background:linear-gradient(135deg,#f59e0b,#d97706)}
.step-card:nth-child(4) .step-num{background:linear-gradient(135deg,var(--accent),var(--accent-hover));color:var(--primary)}
.step-card h3{font-size:16px;font-weight:700;margin-bottom:8px;color:var(--text)}
.step-card p{font-size:13px;color:var(--text-muted);line-height:1.65}
.step-line{
  position:absolute;top:60px;left:calc(50% + 36px);width:calc(100% - 72px);height:2px;
  background:linear-gradient(90deg,var(--border),var(--border));display:none;
}
/* ===== Timeline ===== */
.timeline{max-width:760px;margin:0 auto;position:relative;padding:20px 0}
.timeline::before{
  content:'';position:absolute;left:28px;top:0;bottom:0;width:3px;
  background:linear-gradient(180deg,var(--accent),rgba(var(--accent-rgb),.2));
  border-radius:3px;
}
.timeline-item{
  position:relative;padding:0 0 36px 80px;transition:var(--transition);
}
.timeline-item:last-child{padding-bottom:0}
.timeline-dot{
  position:absolute;left:18px;top:4px;width:22px;height:22px;border-radius:50%;
  background:var(--surface);border:4px solid var(--accent);
  box-shadow:0 0 0 4px rgba(var(--accent-rgb),.15);
  z-index:1;
}
.timeline-item h3{font-size:18px;font-weight:700;color:var(--text);margin-bottom:6px}
.timeline-item p{font-size:14px;color:var(--text-muted);line-height:1.7}
.timeline-time{
  display:inline-block;padding:3px 12px;border-radius:50px;background:rgba(var(--accent-rgb),.1);
  color:var(--accent);font-size:12px;font-weight:600;margin-bottom:8px;
}
/* ===== Stats ===== */
.stats-row{
  display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
  background:var(--surface);border-radius:var(--radius-lg);padding:44px 36px;
  box-shadow:var(--shadow);border:1px solid rgba(226,232,240,.6);
}
.stat-item{text-align:center;position:relative;padding:10px}
.stat-item:not(:last-child)::after{
  content:'';position:absolute;right:0;top:15%;bottom:15%;width:1px;
  background:var(--border);
}
.stat-num{
  font-size:40px;font-weight:800;color:var(--primary);line-height:1.2;
  letter-spacing:-1px;display:block;
}
.stat-num span{color:var(--accent)}
.stat-label{font-size:14px;color:var(--text-muted);margin-top:6px;font-weight:500}
/* ===== Security Cards ===== */
.grid-4 .security-card{
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.1);
  border-radius:var(--radius-lg);padding:30px 24px;transition:var(--transition);
  backdrop-filter:blur(6px);
}
.grid-4 .security-card:hover{
  background:rgba(255,255,255,.1);transform:translateY(-6px);
  border-color:rgba(var(--accent-rgb),.3);box-shadow:0 10px 32px rgba(0,0,0,.2);
}
.security-card .card-icon{
  background:rgba(var(--accent-rgb),.15);border-color:rgba(var(--accent-rgb),.3);color:var(--accent);
}
.security-card h3{font-size:16px;font-weight:700;color:#fff;margin-bottom:8px}
.security-card p{font-size:13px;color:rgba(255,255,255,.75);line-height:1.65}
/* ===== FAQ ===== */
.faq-wrap{max-width:800px;margin:0 auto}
.faq-item{
  background:var(--surface);border-radius:var(--radius);margin-bottom:14px;
  box-shadow:var(--shadow-sm);border:1px solid rgba(226,232,240,.5);
  overflow:hidden;transition:var(--transition);
}
.faq-item:hover{box-shadow:var(--shadow)}
.faq-item.active{border-color:rgba(var(--accent-rgb),.4);box-shadow:var(--shadow)}
.faq-question{
  width:100%;text-align:left;padding:20px 24px;font-size:15px;font-weight:600;
  color:var(--text);display:flex;align-items:center;gap:12px;transition:var(--transition);
}
.faq-question:hover{color:var(--accent)}
.faq-question i{
  width:28px;height:28px;border-radius:50%;background:rgba(var(--accent-rgb),.1);
  color:var(--accent);display:flex;align-items:center;justify-content:center;
  font-size:13px;flex-shrink:0;transition:var(--transition);
}
.faq-item.active .faq-question i{
  background:var(--accent);color:#0f1e35;transform:rotate(180deg);
}
.faq-answer{
  max-height:0;overflow:hidden;transition:max-height .4s cubic-bezier(.4,0,.2,1);
  padding:0 24px;
}
.faq-answer-inner{padding:0 0 20px 40px;font-size:14px;color:var(--text-muted);line-height:1.8;border-top:1px solid var(--border);padding-top:16px}
/* ===== CTA ===== */
.cta-section{
  background:linear-gradient(135deg,rgba(var(--accent-rgb),.12),rgba(var(--accent-rgb),.04));
  border-radius:var(--radius-lg);padding:56px 48px;text-align:center;
  position:relative;overflow:hidden;border:1px solid rgba(var(--accent-rgb),.2);
}
.cta-section::before{
  content:'';position:absolute;top:-60px;right:-60px;width:200px;height:200px;
  border-radius:50%;background:rgba(var(--accent-rgb),.12);
}
.cta-section h2{font-size:28px;font-weight:800;color:var(--text);margin-bottom:12px}
.cta-section p{font-size:15px;color:var(--text-muted);margin-bottom:28px;max-width:500px;margin-left:auto;margin-right:auto}
.cta-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
/* ===== Footer ===== */
.footer{background:var(--primary);color:rgba(255,255,255,.8);padding:56px 0 28px;margin-top:auto}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:40px;margin-bottom:36px}
.footer-brand h3{
  display:flex;align-items:center;gap:12px;font-size:18px;font-weight:700;color:#fff;
  margin-bottom:12px;
}
.footer-brand p{font-size:14px;line-height:1.7;color:rgba(255,255,255,.65);max-width:320px}
.footer-col h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:18px;position:relative;padding-bottom:10px}
.footer-col h4::after{content:'';position:absolute;left:0;bottom:0;width:28px;height:2px;background:var(--accent);border-radius:2px}
.footer-col ul li{margin-bottom:10px}
.footer-col ul li a{
  font-size:14px;color:rgba(255,255,255,.65);display:inline-flex;align-items:center;gap:6px;
  transition:var(--transition);
}
.footer-col ul li a:hover{color:var(--accent);padding-left:4px}
.footer-col ul li a i{font-size:12px;color:var(--accent)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);padding-top:24px;text-align:center;
}
.footer-bottom p{font-size:13px;color:rgba(255,255,255,.45);line-height:1.6}
/* ===== Responsive ===== */
@media(max-width:1024px){
  .sidebar{transform:translateX(-100%)}
  .sidebar.open{transform:translateX(0)}
  .main-wrapper{margin-left:0}
  .mobile-header{display:flex}
  .sidebar-overlay.show{display:block;opacity:1}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .steps-row{grid-template-columns:repeat(2,1fr)}
  .stats-row{grid-template-columns:repeat(2,1fr)}
  .stat-item:nth-child(2)::after{display:none}
  .page-hero{padding:70px 0 60px}
  .page-hero h1{font-size:32px}
}
@media(max-width:768px){
  .container{padding:0 18px}
  .grid-3{grid-template-columns:1fr}
  .grid-2{grid-template-columns:1fr}
  .grid-4{grid-template-columns:repeat(2,1fr);gap:14px}
  .section{padding:56px 0}
  .section-head h2{font-size:26px}
  .page-hero h1{font-size:28px;line-height:1.35}
  .page-hero p{font-size:15px}
  .hero-actions{flex-direction:column;align-items:flex-start}
  .steps-row{grid-template-columns:1fr 1fr;gap:14px}
  .step-card{padding:24px 16px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .stats-row{padding:28px 20px;gap:16px}
  .stat-num{font-size:28px}
  .cta-section{padding:36px 24px}
  .timeline-item{padding-left:64px}
  .timeline::before{left:22px}
  .timeline-dot{left:12px;width:20px;height:20px}
  .faq-question{font-size:14px;padding:16px 18px}
}
@media(max-width:520px){
  .grid-4{grid-template-columns:1fr}
  .steps-row{grid-template-columns:1fr;gap:12px}
  .stats-row{grid-template-columns:1fr 1fr;padding:24px 14px;gap:12px}
  .stat-item:nth-child(2)::after{display:none}
  .stat-item:nth-child(4)::after{display:none}
  .stat-num{font-size:24px}
  .page-hero{padding:56px 0 48px}
  .page-hero h1{font-size:24px}
  .hero-actions .btn{width:100%}
  .footer{padding:40px 0 20px}
  .brand-text{font-size:13px}
  .mobile-brand .brand-icon{width:32px;height:32px;font-size:12px}
}

/* roulang page: article */
:root {
  --primary: #1a365d;
  --primary-600: #274b7d;
  --primary-100: #e9eff7;
  --accent: #d4a853;
  --accent-600: #c0913a;
  --accent-100: #fdf5e4;
  --dark: #0d1a2d;
  --bg: #f0f3f7;
  --surface: #ffffff;
  --text: #1c2735;
  --text-muted: #52647a;
  --text-light: #8296ad;
  --border: #e1e7ef;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 9px;
  --shadow-sm: 0 2px 10px rgba(13,26,45,0.06);
  --shadow-md: 0 8px 28px rgba(13,26,45,0.09);
  --shadow-lg: 0 18px 48px rgba(13,26,45,0.13);
  --gap-xl: 80px;
  --gap-lg: 52px;
  --gap-md: 32px;
  --gap-sm: 16px;
  --sidebar-w: 262px;
  --topbar-h: 64px;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --font-serif: Georgia, "Songti SC", "SimSun", serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { font-family: var(--font-sans); font-size: 16px; line-height: 1.7; color: var(--text); background: var(--bg); }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--primary); text-decoration: none; transition: color .2s ease; }
a:hover { color: var(--accent); }
button { font-family: inherit; cursor: pointer; }
input, textarea { font-family: inherit; font-size: 14px; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 26px; border-radius: var(--radius-sm); border: none;
  font-size: 15px; font-weight: 600; line-height: 1.2; text-align: center;
  transition: all .25s ease; white-space: nowrap; text-decoration: none;
}
.btn:focus-visible, a:focus-visible, button:focus-visible { outline: 3px solid rgba(212,168,83,.45); outline-offset: 2px; }
.btn i { font-size: 15px; }
.btn-primary { background: var(--primary); color: #fff; box-shadow: 0 4px 14px rgba(26,54,93,.22); }
.btn-primary:hover { background: var(--primary-600); color: #fff; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(26,54,93,.30); }
.btn-accent { background: var(--accent); color: #1a1a1a; box-shadow: 0 4px 14px rgba(212,168,83,.25); }
.btn-accent:hover { background: var(--accent-600); color: #0d1a2d; transform: translateY(-2px); box-shadow: 0 8px 26px rgba(212,168,83,.35); }
.btn-outline { background: transparent; border: 1.5px solid var(--border); color: var(--text); }
.btn-outline:hover { border-color: var(--primary); color: var(--primary); background: var(--primary-100); transform: translateY(-2px); }
.btn-ghost-light { background: rgba(255,255,255,.16); color: #fff; border: 1.5px solid rgba(255,255,255,.5); }
.btn-ghost-light:hover { background: rgba(255,255,255,.28); color: #fff; transform: translateY(-2px); }
.btn-sm { padding: 8px 18px; font-size: 14px; border-radius: 7px; }

.app-shell { display: flex; min-height: 100vh; }

.side-nav {
  width: var(--sidebar-w); flex-shrink: 0; background: linear-gradient(180deg, #0d1a2d 0%, #132538 100%);
  padding: 32px 20px; display: flex; flex-direction: column; position: fixed; top: 0; left: 0; bottom: 0; z-index: 100;
  transition: transform .32s cubic-bezier(.4,0,.2,1); box-shadow: 2px 0 24px rgba(13,26,45,.18);
}
.nav-logo { display: flex; align-items: center; gap: 12px; padding: 0 8px 24px; border-bottom: 1px solid rgba(255,255,255,.08); margin-bottom: 24px; }
.brand-icon {
  width: 42px; height: 42px; border-radius: 12px; background: linear-gradient(135deg, var(--accent), #b8862e);
  display: flex; align-items: center; justify-content: center; font-size: 15px; font-weight: 800; color: #0d1a2d; flex-shrink: 0;
  box-shadow: 0 4px 16px rgba(212,168,83,.35); letter-spacing: .5px;
}
.brand-text { color: #fff; font-size: 14px; font-weight: 700; line-height: 1.35; letter-spacing: .3px; }
.side-nav-links { list-style: none; display: flex; flex-direction: column; gap: 6px; flex: 1; }
.nav-link {
  display: flex; align-items: center; gap: 12px; padding: 13px 14px; border-radius: 11px;
  color: #a8b6c9; font-size: 15px; font-weight: 500; transition: all .22s ease; text-decoration: none; border: 1px solid transparent;
}
.nav-link i { width: 20px; text-align: center; font-size: 15px; }
.nav-link span { line-height: 1.3; }
.nav-link:hover { color: #fff; background: rgba(255,255,255,.08); }
.nav-link.active { color: #fff; background: rgba(212,168,83,.16); border-color: rgba(212,168,83,.28); box-shadow: 0 2px 10px rgba(212,168,83,.12); }
.nav-foot { padding: 18px 8px 6px; border-top: 1px solid rgba(255,255,255,.08); }
.nav-foot p { color: #6c7d92; font-size: 12px; line-height: 1.6; text-align: center; }

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

.top-bar {
  display: none; height: var(--topbar-h); background: #fff; border-bottom: 1px solid var(--border);
  align-items: center; justify-content: space-between; padding: 0 20px; position: sticky; top: 0; z-index: 99;
  box-shadow: 0 1px 6px rgba(13,26,45,.05);
}
.menu-toggle { background: none; border: none; font-size: 22px; color: var(--primary); width: 40px; height: 40px; border-radius: 8px; display: flex; align-items: center; justify-content: center; }
.menu-toggle:hover { background: var(--primary-100); }
.mobile-logo { font-size: 15px; font-weight: 800; color: var(--primary); letter-spacing: .3px; }
.top-actions { display: flex; align-items: center; gap: 8px; }

.page-banner {
  position: relative; padding: 76px 0 64px; background-size: cover; background-position: center;
  color: #fff; overflow: hidden;
}
.page-banner::before { content: ""; position: absolute; inset: 0; background: linear-gradient(105deg, rgba(13,26,45,.93) 0%, rgba(13,26,45,.70) 45%, rgba(13,26,45,.35) 100%); }
.page-banner .container { position: relative; z-index: 2; }
.breadcrumb { display: flex; align-items: center; gap: 8px; font-size: 13px; color: rgba(255,255,255,.75); margin-bottom: 18px; flex-wrap: wrap; }
.breadcrumb a { color: rgba(255,255,255,.8); text-decoration: none; transition: color .2s; }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb i.sep { font-size: 11px; color: rgba(255,255,255,.5); }
.breadcrumb .current { color: rgba(255,255,255,.95); }
.page-banner h1 { font-size: clamp(26px, 3.6vw, 40px); font-weight: 800; line-height: 1.25; max-width: 820px; letter-spacing: .5px; margin-bottom: 18px; }
.page-meta { display: flex; gap: 24px; flex-wrap: wrap; align-items: center; }
.page-meta span { display: inline-flex; align-items: center; gap: 7px; font-size: 14px; color: rgba(255,255,255,.82); background: rgba(255,255,255,.12); padding: 7px 16px; border-radius: 50px; backdrop-filter: blur(4px); }
.page-meta i { color: var(--accent); }

.article-layout { max-width: 1200px; margin: 0 auto; padding: 56px 24px 40px; display: grid; grid-template-columns: minmax(0, 1fr) 340px; gap: 40px; align-items: start; }

.article-main { min-width: 0; }
.article-card {
  background: var(--surface); border-radius: var(--radius-lg); box-shadow: var(--shadow-md);
  padding: 44px 48px; border: 1px solid var(--border);
}
.article-cover { width: 100%; border-radius: var(--radius-md); margin-bottom: 32px; object-fit: cover; aspect-ratio: 16/8; }
.article-content { font-size: 16px; line-height: 1.85; color: var(--text); }
.article-content h2, .article-content h3 { font-weight: 700; line-height: 1.45; margin: 1.5em 0 .6em; color: var(--primary); }
.article-content h2 { font-size: 24px; padding-bottom: 10px; border-bottom: 2px solid var(--primary-100); }
.article-content h3 { font-size: 20px; }
.article-content p { margin-bottom: 1.1em; }
.article-content ul, .article-content ol { margin: 1em 0 1.2em; padding-left: 1.6em; }
.article-content li { margin-bottom: .5em; }
.article-content li::marker { color: var(--accent); }
.article-content blockquote { border-left: 4px solid var(--accent); background: var(--accent-100); padding: 16px 20px; border-radius: 0 var(--radius-sm) var(--radius-sm) 0; margin: 1.4em 0; font-style: normal; color: var(--text); }
.article-content blockquote p { margin-bottom: 0; }
.article-content a { color: var(--primary); font-weight: 500; border-bottom: 1px dashed rgba(26,54,93,.3); }
.article-content a:hover { color: var(--accent); border-color: var(--accent); }
.article-content code { background: var(--primary-100); border-radius: 5px; padding: 2px 7px; font-size: 14px; }
.article-content pre { background: var(--dark); color: #dbe3ec; padding: 18px 22px; border-radius: var(--radius-sm); overflow-x: auto; margin: 1.2em 0; font-size: 14px; line-height: 1.7; }
.article-content pre code { background: none; padding: 0; color: inherit; }
.article-content img { border-radius: var(--radius-md); margin: 1.2em 0; }
.article-footer { margin-top: 36px; padding-top: 24px; border-top: 1px solid var(--border); display: flex; gap: 14px; flex-wrap: wrap; }

.not-found-card { background: var(--surface); border-radius: var(--radius-lg); box-shadow: var(--shadow-md); padding: 72px 48px; text-align: center; }
.not-found-icon { font-size: 54px; color: var(--accent); margin-bottom: 18px; }
.not-found-card h2 { font-size: 26px; color: var(--primary); margin-bottom: 12px; font-weight: 700; }
.not-found-card p { color: var(--text-muted); margin-bottom: 28px; max-width: 420px; margin-left: auto; margin-right: auto; }

.side-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm); padding: 28px; margin-bottom: 28px;
}
.side-card > h3 { font-size: 18px; font-weight: 700; color: var(--primary); margin-bottom: 16px; padding-bottom: 12px; border-bottom: 2px solid var(--primary-100); display: flex; align-items: center; gap: 8px; }
.side-card > h3::before { content: ""; width: 4px; height: 20px; background: var(--accent); border-radius: 2px; }
.side-cover { width: 100%; border-radius: var(--radius-md); margin-bottom: 16px; aspect-ratio: 16/9; object-fit: cover; }
.side-card p { font-size: 14px; color: var(--text-muted); line-height: 1.7; margin-bottom: 16px; }

.info-list { display: flex; flex-direction: column; gap: 4px; }
.info-link {
  display: flex; flex-direction: column; gap: 2px; padding: 13px 4px;
  border-bottom: 1px dashed var(--border); position: relative;
}
.info-link:last-child { border-bottom: none; }
.info-title { font-size: 14px; font-weight: 500; color: var(--text); line-height: 1.45; transition: color .2s; padding-right: 18px; }
.info-link:hover .info-title { color: var(--primary); }
.info-date { font-size: 12px; color: var(--text-light); }
.info-link::after { content: "\f054"; font-family: "Font Awesome 6 Free"; font-weight: 900; font-size: 11px; color: var(--text-light); position: absolute; right: 4px; top: 18px; transition: color .2s; }
.info-link:hover::after { color: var(--accent); }
.empty-text { font-size: 14px; color: var(--text-light); padding: 20px 0; text-align: center; }

.faq-section { background: #f8fafc; padding: var(--gap-xl) 0; border-top: 1px solid var(--border); }
.section-head { text-align: center; margin-bottom: 48px; max-width: 680px; margin-left: auto; margin-right: auto; }
.section-tag { display: inline-block; background: var(--accent-100); color: var(--accent-600); font-size: 13px; font-weight: 700; padding: 6px 16px; border-radius: 50px; margin-bottom: 14px; letter-spacing: 1px; }
.section-head h2 { font-size: clamp(26px, 3vw, 34px); font-weight: 800; color: var(--primary); line-height: 1.3; margin-bottom: 12px; }
.section-head p { color: var(--text-muted); font-size: 15px; }

.faq-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; max-width: 1000px; margin: 0 auto; }
.faq-item { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-md); padding: 24px 26px; box-shadow: var(--shadow-sm); transition: box-shadow .25s, transform .25s; }
.faq-item:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
.faq-item h3 { font-size: 16px; font-weight: 700; color: var(--primary); margin-bottom: 10px; display: flex; gap: 10px; align-items: flex-start; }
.faq-item h3 i { color: var(--accent); font-size: 15px; margin-top: 3px; }
.faq-item p { font-size: 14px; color: var(--text-muted); line-height: 1.7; }

.cta-section { padding: var(--gap-xl) 0; background: linear-gradient(135deg, #0d1a2d 0%, #1a365d 60%, #274b7d 100%); position: relative; overflow: hidden; }
.cta-section::before { content: ""; position: absolute; inset: 0; background: url('/assets/images/backpic/back-1.png') center/cover; opacity: .12; }
.cta-box { max-width: 1000px; margin: 0 auto; padding: 0 24px; display: flex; align-items: center; justify-content: space-between; gap: 40px; position: relative; z-index: 1; flex-wrap: wrap; }
.cta-copy { flex: 1; min-width: 280px; }
.cta-copy h2 { color: #fff; font-size: clamp(23px, 2.6vw, 30px); font-weight: 800; line-height: 1.3; margin-bottom: 12px; }
.cta-copy p { color: rgba(255,255,255,.75); font-size: 15px; line-height: 1.7; }
.cta-actions { display: flex; gap: 14px; flex-wrap: wrap; }

.footer { background: var(--dark); color: #aab6c7; padding: 60px 0 30px; }
.footer .container { max-width: 1200px; padding: 0 24px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 48px; padding-bottom: 36px; border-bottom: 1px solid rgba(255,255,255,.08); }
.footer-brand h3 { color: #fff; font-size: 18px; margin-bottom: 14px; display: flex; align-items: center; gap: 10px; }
.footer-brand p { font-size: 14px; line-height: 1.7; color: #8a9ab0; max-width: 360px; }
.footer-col h4 { color: #fff; font-size: 15px; font-weight: 700; margin-bottom: 16px; letter-spacing: .5px; }
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul a { color: #8a9ab0; font-size: 14px; display: inline-flex; align-items: center; gap: 6px; transition: all .2s; }
.footer-col ul a:hover { color: var(--accent); padding-left: 3px; }
.footer-col ul a i { font-size: 11px; color: var(--accent); }
.footer-bottom { text-align: center; padding-top: 28px; }
.footer-bottom p { font-size: 13px; color: #6e7f94; line-height: 1.6; }

@media (max-width: 1024px) {
  .article-layout { grid-template-columns: minmax(0, 1fr) 300px; gap: 28px; padding: 44px 20px 32px; }
  .article-card { padding: 32px 32px; }
  .page-banner { padding: 56px 0 48px; }
  .faq-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
}

@media (max-width: 820px) {
  .side-nav { transform: translateX(-100%); width: 280px; }
  .side-nav.open { transform: translateX(0); }
  .main-wrap { margin-left: 0; }
  .top-bar { display: flex; }
  .article-layout { grid-template-columns: 1fr; padding: 28px 16px 24px; }
  .article-card { padding: 24px 20px; border-radius: var(--radius-md); }
  .page-banner { padding: 42px 0 36px; }
  .page-banner h1 { font-size: 24px; }
  .cta-box { flex-direction: column; gap: 24px; text-align: center; }
  .cta-actions { justify-content: center; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; padding-bottom: 24px; }
  .article-footer { flex-direction: column; }
  .article-footer .btn { width: 100%; }
}

@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .page-banner { padding: 34px 0 30px; }
  .page-meta { gap: 10px; }
  .page-meta span { font-size: 12px; padding: 5px 12px; }
  .article-card { padding: 20px 16px; }
  .article-content { font-size: 15px; }
  .article-content h2 { font-size: 20px; }
  .article-content h3 { font-size: 17px; }
  .side-card { padding: 20px; }
  .faq-item { padding: 18px; }
  .cta-section { padding: 52px 0; }
  .footer { padding: 40px 0 20px; }
  .brand-icon { width: 36px; height: 36px; font-size: 13px; }
}