/* roulang page: index */
:root {
  --primary: #1a3a5c;
  --primary-light: #2a5a8c;
  --primary-dark: #0f2440;
  --secondary: #2d7d9a;
  --secondary-light: #4a9db8;
  --accent: #d4943a;
  --accent-light: #e8b05a;
  --accent-dark: #b87a2a;
  --bg: #f4f6f9;
  --bg-alt: #eef1f5;
  --bg-card: #ffffff;
  --text: #1a1a2e;
  --text-light: #5a6a7e;
  --text-muted: #8a9aa8;
  --border: #e2e6ed;
  --radius: 14px;
  --radius-sm: 8px;
  --radius-lg: 20px;
  --shadow: 0 4px 20px rgba(0,0,0,0.06);
  --shadow-hover: 0 12px 40px rgba(0,0,0,0.10);
  --transition: 0.3s cubic-bezier(.4,0,.2,1);
  --font: 'Segoe UI', system-ui, -apple-system, sans-serif;
  --container: 1240px;
  --header-h: 72px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font);font-size:16px;line-height:1.7;color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased}
a{color:var(--primary);text-decoration:none;transition:var(--transition)}
a:hover{color:var(--secondary)}
img{max-width:100%;height:auto;display:block}
button,.btn{cursor:pointer;font-family:var(--font);transition:var(--transition);border:none;outline:none}
input,textarea{font-family:var(--font);transition:var(--transition)}
.container{max-width:var(--container);margin:0 auto;padding:0 24px}
@media(max-width:768px){.container{padding:0 16px}}

/* ===== Header / Nav ===== */
header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,0.95);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid var(--border);height:var(--header-h)}
header .container{display:flex;align-items:center;justify-content:space-between;height:100%}
.logo{font-size:1.6rem;font-weight:800;color:var(--primary);letter-spacing:-0.5px;display:flex;align-items:center;gap:8px}
.logo i{color:var(--accent);font-size:1.4rem}
.logo span{background:linear-gradient(135deg,var(--primary),var(--secondary));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
nav{display:flex;align-items:center;gap:8px}
nav a{padding:8px 18px;border-radius:var(--radius-sm);font-size:0.95rem;font-weight:500;color:var(--text-light);position:relative}
nav a:hover{color:var(--primary);background:rgba(26,58,92,0.06)}
nav a.active{color:var(--primary);background:rgba(26,58,92,0.08);font-weight:600}
nav a.active::after{content:'';position:absolute;bottom:0;left:50%;transform:translateX(-50%);width:20px;height:3px;background:var(--accent);border-radius:2px}
.header-actions{display:flex;align-items:center;gap:12px}
.header-actions .search-box{display:flex;align-items:center;background:var(--bg-alt);border-radius:var(--radius-sm);padding:0 12px;border:1px solid transparent;transition:var(--transition)}
.header-actions .search-box:focus-within{border-color:var(--secondary);background:#fff}
.header-actions .search-box input{border:none;background:transparent;padding:8px 4px;font-size:0.9rem;width:100px;outline:none;color:var(--text)}
.header-actions .search-box button{background:transparent;padding:8px;color:var(--text-light);font-size:0.9rem}
.header-actions .search-box button:hover{color:var(--primary)}
.btn-cta-nav{padding:8px 22px;background:linear-gradient(135deg,var(--accent),var(--accent-light));color:#fff;border-radius:var(--radius-sm);font-weight:600;font-size:0.9rem;box-shadow:0 2px 10px rgba(212,148,58,0.3)}
.btn-cta-nav:hover{transform:translateY(-1px);box-shadow:0 6px 20px rgba(212,148,58,0.4);color:#fff}
.mobile-toggle{display:none;background:transparent;font-size:1.5rem;color:var(--text);padding:8px}
@media(max-width:768px){
  .mobile-toggle{display:block}
  nav{position:fixed;top:var(--header-h);left:0;right:0;background:#fff;flex-direction:column;padding:16px;gap:4px;box-shadow:var(--shadow);transform:translateY(-120%);opacity:0;pointer-events:none;transition:var(--transition);border-bottom:2px solid var(--border)}
  nav.open{transform:translateY(0);opacity:1;pointer-events:auto}
  nav a{width:100%;padding:12px 16px;font-size:1rem}
  .header-actions .search-box{display:none}
  .btn-cta-nav{padding:8px 16px;font-size:0.85rem}
}

/* ===== Hero Split ===== */
.hero-split{display:flex;min-height:calc(100vh - var(--header-h));background:var(--primary-dark);position:relative;overflow:hidden}
.hero-split .hero-content{flex:1;display:flex;flex-direction:column;justify-content:center;padding:80px 60px 80px 80px;color:#fff;position:relative;z-index:2;background:linear-gradient(135deg,var(--primary-dark) 0%,var(--primary) 100%)}
.hero-split .hero-content .badge{display:inline-flex;align-items:center;gap:6px;background:rgba(212,148,58,0.2);color:var(--accent-light);padding:6px 16px;border-radius:50px;font-size:0.85rem;font-weight:500;margin-bottom:20px;border:1px solid rgba(212,148,58,0.3)}
.hero-split .hero-content h1{font-size:3.8rem;font-weight:800;line-height:1.15;margin-bottom:20px;letter-spacing:-1px}
.hero-split .hero-content h1 span{background:linear-gradient(135deg,var(--accent-light),#f0c878);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-split .hero-content p{font-size:1.2rem;line-height:1.8;color:rgba(255,255,255,0.75);max-width:520px;margin-bottom:36px}
.hero-split .hero-content .hero-actions{display:flex;gap:16px;flex-wrap:wrap}
.hero-split .hero-content .hero-actions .btn-primary{padding:14px 36px;background:linear-gradient(135deg,var(--accent),var(--accent-light));color:#fff;border-radius:var(--radius-sm);font-weight:700;font-size:1.05rem;box-shadow:0 4px 20px rgba(212,148,58,0.35);display:inline-flex;align-items:center;gap:10px}
.hero-split .hero-content .hero-actions .btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 30px rgba(212,148,58,0.45);color:#fff}
.hero-split .hero-content .hero-actions .btn-outline{padding:14px 36px;border:2px solid rgba(255,255,255,0.3);color:#fff;border-radius:var(--radius-sm);font-weight:600;font-size:1.05rem;display:inline-flex;align-items:center;gap:10px;background:transparent}
.hero-split .hero-content .hero-actions .btn-outline:hover{border-color:var(--accent-light);color:var(--accent-light);background:rgba(212,148,58,0.1)}
.hero-split .hero-visual{flex:1;background:var(--primary-dark);position:relative;overflow:hidden;display:flex;align-items:center;justify-content:center}
.hero-split .hero-visual .hero-bg{position:absolute;inset:0;background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;opacity:0.6;mix-blend-mode:screen}
.hero-split .hero-visual .hero-overlay{position:absolute;inset:0;background:linear-gradient(135deg,var(--primary) 0%,transparent 50%,var(--primary-dark) 100%)}
.hero-split .hero-visual .hero-graphic{position:relative;z-index:2;text-align:center;padding:40px}
.hero-split .hero-visual .hero-graphic .icon-ring{width:200px;height:200px;border-radius:50%;border:2px solid rgba(212,148,58,0.3);display:flex;align-items:center;justify-content:center;margin:0 auto;background:rgba(255,255,255,0.03);backdrop-filter:blur(10px)}
.hero-split .hero-visual .hero-graphic .icon-ring i{font-size:5rem;color:var(--accent-light);opacity:0.9}
.hero-split .hero-visual .hero-graphic .stats-mini{display:flex;gap:30px;margin-top:30px;justify-content:center}
.hero-split .hero-visual .hero-graphic .stats-mini .stat-item{text-align:center;color:rgba(255,255,255,0.8)}
.hero-split .hero-visual .hero-graphic .stats-mini .stat-item .num{font-size:1.8rem;font-weight:700;color:#fff}
.hero-split .hero-visual .hero-graphic .stats-mini .stat-item .label{font-size:0.8rem;color:rgba(255,255,255,0.6);margin-top:2px}
@media(max-width:1024px){
  .hero-split{flex-direction:column;min-height:auto}
  .hero-split .hero-content{padding:60px 40px;align-items:center;text-align:center}
  .hero-split .hero-content p{margin-left:auto;margin-right:auto}
  .hero-split .hero-content .hero-actions{justify-content:center}
  .hero-split .hero-visual{min-height:320px}
  .hero-split .hero-content h1{font-size:2.8rem}
}
@media(max-width:520px){
  .hero-split .hero-content{padding:40px 24px}
  .hero-split .hero-content h1{font-size:2.2rem}
  .hero-split .hero-content p{font-size:1rem}
  .hero-split .hero-content .hero-actions .btn-primary,.hero-split .hero-content .hero-actions .btn-outline{padding:12px 24px;font-size:0.95rem}
  .hero-split .hero-visual{min-height:240px}
  .hero-split .hero-visual .hero-graphic .icon-ring{width:140px;height:140px}
  .hero-split .hero-visual .hero-graphic .icon-ring i{font-size:3.5rem}
}

/* ===== Section通用 ===== */
section{padding:80px 0}
.section-header{text-align:center;margin-bottom:52px}
.section-header .sec-label{display:inline-flex;align-items:center;gap:6px;background:rgba(26,58,92,0.08);color:var(--primary);padding:4px 16px;border-radius:50px;font-size:0.85rem;font-weight:500;margin-bottom:12px}
.section-header h2{font-size:2.4rem;font-weight:700;color:var(--text);margin-bottom:12px;letter-spacing:-0.5px}
.section-header p{color:var(--text-light);font-size:1.1rem;max-width:600px;margin:0 auto}
@media(max-width:768px){
  section{padding:60px 0}
  .section-header h2{font-size:2rem}
  .section-header p{font-size:1rem}
}
@media(max-width:520px){
  section{padding:48px 0}
  .section-header h2{font-size:1.7rem}
}

/* ===== Intro / 品牌介绍 ===== */
.intro-section{background:var(--bg-card)}
.intro-grid{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.intro-grid .intro-text h2{font-size:2.2rem;font-weight:700;margin-bottom:16px;color:var(--text)}
.intro-grid .intro-text p{color:var(--text-light);font-size:1.05rem;margin-bottom:24px;line-height:1.8}
.intro-grid .intro-text .intro-features{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.intro-grid .intro-text .intro-features .feat-item{display:flex;align-items:center;gap:10px;font-size:0.95rem;color:var(--text)}
.intro-grid .intro-text .intro-features .feat-item i{color:var(--accent);font-size:1.1rem}
.intro-grid .intro-image{position:relative;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.intro-grid .intro-image img{width:100%;border-radius:var(--radius);transition:var(--transition)}
.intro-grid .intro-image:hover img{transform:scale(1.02)}
@media(max-width:768px){
  .intro-grid{grid-template-columns:1fr;gap:32px}
  .intro-grid .intro-text h2{font-size:1.8rem}
  .intro-grid .intro-text .intro-features{grid-template-columns:1fr}
}

/* ===== 分类入口 ===== */
.categories-section{background:var(--bg-alt)}
.cat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:24px}
.cat-card{background:var(--bg-card);border-radius:var(--radius);padding:32px 28px;box-shadow:var(--shadow);transition:var(--transition);border:1px solid var(--border);text-align:center;position:relative;overflow:hidden}
.cat-card::before{content:'';position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,var(--primary),var(--secondary));opacity:0;transition:var(--transition)}
.cat-card:hover::before{opacity:1}
.cat-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:transparent}
.cat-card .cat-icon{width:64px;height:64px;border-radius:50%;background:rgba(26,58,92,0.08);display:flex;align-items:center;justify-content:center;margin:0 auto 16px;font-size:1.8rem;color:var(--primary);transition:var(--transition)}
.cat-card:hover .cat-icon{background:var(--primary);color:#fff}
.cat-card h3{font-size:1.2rem;font-weight:600;margin-bottom:8px}
.cat-card p{color:var(--text-light);font-size:0.92rem;margin-bottom:16px;line-height:1.6}
.cat-card .cat-tag{display:inline-block;padding:4px 14px;background:rgba(45,125,154,0.1);color:var(--secondary);border-radius:50px;font-size:0.8rem;font-weight:500}
.cat-card .cat-link{display:inline-flex;align-items:center;gap:6px;margin-top:12px;font-weight:600;color:var(--primary);font-size:0.9rem}
.cat-card .cat-link i{transition:var(--transition)}
.cat-card:hover .cat-link i{transform:translateX(4px)}

/* ===== 最新资讯 ===== */
.news-section{background:var(--bg-card)}
.news-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:24px}
.news-card{background:var(--bg);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:var(--transition);border:1px solid var(--border);display:flex;flex-direction:column}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:transparent}
.news-card .news-img{height:180px;overflow:hidden;position:relative}
.news-card .news-img img{width:100%;height:100%;object-fit:cover;transition:var(--transition)}
.news-card:hover .news-img img{transform:scale(1.06)}
.news-card .news-img .news-cat{position:absolute;top:12px;left:12px;background:var(--accent);color:#fff;padding:4px 12px;border-radius:50px;font-size:0.75rem;font-weight:600}
.news-card .news-body{padding:20px 24px 24px;flex:1;display:flex;flex-direction:column}
.news-card .news-body .news-meta{display:flex;gap:16px;font-size:0.8rem;color:var(--text-muted);margin-bottom:8px}
.news-card .news-body .news-meta i{margin-right:4px}
.news-card .news-body h3{font-size:1.1rem;font-weight:600;margin-bottom:8px;line-height:1.4;color:var(--text)}
.news-card .news-body h3 a{color:var(--text)}
.news-card .news-body h3 a:hover{color:var(--primary)}
.news-card .news-body p{color:var(--text-light);font-size:0.9rem;line-height:1.6;flex:1}
.news-card .news-body .news-readmore{margin-top:12px;color:var(--primary);font-weight:600;font-size:0.85rem;display:inline-flex;align-items:center;gap:4px}
.news-empty{grid-column:1/-1;text-align:center;padding:60px 20px;color:var(--text-muted);background:var(--bg);border-radius:var(--radius);font-size:1.05rem}
@media(max-width:520px){
  .news-grid{grid-template-columns:1fr}
}

/* ===== 数据统计 ===== */
.stats-section{background:var(--primary);color:#fff;position:relative;overflow:hidden}
.stats-section::before{content:'';position:absolute;inset:0;background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;opacity:0.08;mix-blend-mode:overlay}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:32px;position:relative;z-index:2}
.stats-grid .stat-card{text-align:center;padding:24px}
.stats-grid .stat-card .stat-num{font-size:3rem;font-weight:800;line-height:1.2;background:linear-gradient(135deg,#fff,var(--accent-light));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.stats-grid .stat-card .stat-label{font-size:1rem;color:rgba(255,255,255,0.7);margin-top:6px}
.stats-grid .stat-card .stat-icon{font-size:2rem;color:rgba(212,148,58,0.5);margin-bottom:8px}
@media(max-width:768px){
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:16px}
  .stats-grid .stat-card .stat-num{font-size:2.4rem}
}
@media(max-width:520px){
  .stats-grid{grid-template-columns:1fr 1fr;gap:12px}
  .stats-grid .stat-card .stat-num{font-size:2rem}
}

/* ===== 服务流程 ===== */
.process-section{background:var(--bg-alt)}
.process-steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:32px;position:relative}
.process-steps .step{text-align:center;padding:32px 24px;background:var(--bg-card);border-radius:var(--radius);box-shadow:var(--shadow);border:1px solid var(--border);transition:var(--transition);position:relative}
.process-steps .step:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.process-steps .step .step-num{width:48px;height:48px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--secondary));color:#fff;display:flex;align-items:center;justify-content:center;font-size:1.2rem;font-weight:700;margin:0 auto 16px}
.process-steps .step h3{font-size:1.1rem;font-weight:600;margin-bottom:8px}
.process-steps .step p{color:var(--text-light);font-size:0.9rem;line-height:1.6}
.process-steps .step .step-arrow{position:absolute;right:-24px;top:50%;transform:translateY(-50%);font-size:1.5rem;color:var(--primary-light);opacity:0.3}
.process-steps .step:last-child .step-arrow{display:none}
@media(max-width:768px){
  .process-steps{grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:20px}
  .process-steps .step .step-arrow{display:none}
}

/* ===== FAQ ===== */
.faq-section{background:var(--bg-card)}
.faq-list{max-width:800px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
.faq-item{border:1px solid var(--border);border-radius:var(--radius-sm);overflow:hidden;transition:var(--transition)}
.faq-item:hover{border-color:var(--secondary)}
.faq-item summary{padding:18px 24px;font-weight:600;font-size:1.02rem;cursor:pointer;display:flex;justify-content:space-between;align-items:center;list-style:none;background:var(--bg);transition:var(--transition)}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:'\f107';font-family:'Font Awesome 6 Free';font-weight:900;transition:var(--transition);color:var(--text-light)}
.faq-item[open] summary::after{transform:rotate(180deg);color:var(--accent)}
.faq-item[open] summary{background:rgba(26,58,92,0.04);color:var(--primary)}
.faq-item .faq-answer{padding:4px 24px 20px;color:var(--text-light);line-height:1.8;font-size:0.95rem}
@media(max-width:520px){
  .faq-item summary{padding:14px 16px;font-size:0.95rem}
  .faq-item .faq-answer{padding:4px 16px 16px;font-size:0.9rem}
}

/* ===== CTA ===== */
.cta-section{background:linear-gradient(135deg,var(--primary-dark),var(--primary));position:relative;overflow:hidden;padding:100px 0}
.cta-section::before{content:'';position:absolute;inset:0;background:url('/assets/images/backpic/back-3.png') center/cover no-repeat;opacity:0.06;mix-blend-mode:overlay}
.cta-section .cta-content{position:relative;z-index:2;text-align:center;color:#fff;max-width:700px;margin:0 auto}
.cta-section .cta-content h2{font-size:2.6rem;font-weight:700;margin-bottom:16px}
.cta-section .cta-content p{font-size:1.15rem;color:rgba(255,255,255,0.75);margin-bottom:32px;line-height:1.7}
.cta-section .cta-content .cta-actions{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.cta-section .cta-content .cta-actions .btn-cta-primary{padding:16px 40px;background:linear-gradient(135deg,var(--accent),var(--accent-light));color:#fff;border-radius:var(--radius-sm);font-weight:700;font-size:1.1rem;box-shadow:0 4px 20px rgba(212,148,58,0.35);display:inline-flex;align-items:center;gap:10px}
.cta-section .cta-content .cta-actions .btn-cta-primary:hover{transform:translateY(-2px);box-shadow:0 8px 30px rgba(212,148,58,0.45);color:#fff}
.cta-section .cta-content .cta-actions .btn-cta-outline{padding:16px 40px;border:2px solid rgba(255,255,255,0.3);color:#fff;border-radius:var(--radius-sm);font-weight:600;font-size:1.1rem;background:transparent;display:inline-flex;align-items:center;gap:10px}
.cta-section .cta-content .cta-actions .btn-cta-outline:hover{border-color:#fff;background:rgba(255,255,255,0.08)}
@media(max-width:768px){
  .cta-section{padding:60px 0}
  .cta-section .cta-content h2{font-size:2rem}
  .cta-section .cta-content p{font-size:1rem}
}
@media(max-width:520px){
  .cta-section .cta-content h2{font-size:1.6rem}
  .cta-section .cta-content .cta-actions .btn-cta-primary,.cta-section .cta-content .cta-actions .btn-cta-outline{padding:14px 28px;font-size:1rem}
}

/* ===== Footer ===== */
footer{background:var(--primary-dark);color:rgba(255,255,255,0.7);padding:60px 0 0}
footer .footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,0.08)}
footer .footer-grid .footer-brand .logo{color:#fff;margin-bottom:12px}
footer .footer-grid .footer-brand .logo i{color:var(--accent)}
footer .footer-grid .footer-brand .logo span{-webkit-text-fill-color:#fff;background:none}
footer .footer-grid .footer-brand p{font-size:0.9rem;line-height:1.7;max-width:300px;color:rgba(255,255,255,0.55)}
footer .footer-grid .footer-col h4{color:#fff;font-size:1rem;font-weight:600;margin-bottom:16px}
footer .footer-grid .footer-col ul{list-style:none;display:flex;flex-direction:column;gap:10px}
footer .footer-grid .footer-col ul li a{color:rgba(255,255,255,0.55);font-size:0.9rem}
footer .footer-grid .footer-col ul li a:hover{color:var(--accent-light)}
footer .footer-bottom{padding:24px 0;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;font-size:0.85rem;color:rgba(255,255,255,0.4)}
footer .footer-bottom .footer-links{display:flex;gap:20px}
footer .footer-bottom .footer-links a{color:rgba(255,255,255,0.4);font-size:0.85rem}
footer .footer-bottom .footer-links a:hover{color:var(--accent-light)}
@media(max-width:768px){
  footer .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  footer .footer-bottom{flex-direction:column;text-align:center}
}
@media(max-width:520px){
  footer .footer-grid{grid-template-columns:1fr;gap:24px}
}

/* ===== 通用辅助 ===== */
.text-center{text-align:center}
.mt-8{margin-top:8px}
.mt-16{margin-top:16px}
.mt-24{margin-top:24px}
.mb-16{margin-bottom:16px}
.mb-24{margin-bottom:24px}
.gap-8{gap:8px}
.flex-center{display:flex;align-items:center;justify-content:center}

/* roulang page: article */
:root {
  --primary: #1a6b5a;
  --primary-light: #219a7a;
  --primary-dark: #0f4d40;
  --secondary: #f5a623;
  --secondary-light: #f7c35a;
  --accent: #e85d3a;
  --bg: #f8faf9;
  --bg-card: #ffffff;
  --bg-alt: #f0f5f3;
  --text: #1a2e2a;
  --text-light: #5a7a72;
  --text-muted: #8aa39b;
  --border: #dce8e4;
  --radius: 14px;
  --radius-sm: 8px;
  --radius-lg: 24px;
  --shadow: 0 4px 24px rgba(26, 107, 90, 0.08);
  --shadow-hover: 0 12px 40px rgba(26, 107, 90, 0.16);
  --shadow-lg: 0 24px 64px rgba(26, 107, 90, 0.12);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
  --max-width: 1200px;
  --nav-height: 72px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  font-size: 16px;
  padding-top: var(--nav-height);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius-sm);
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: var(--transition);
}

a:hover {
  color: var(--primary-light);
}

a:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
  border-radius: 4px;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

@media (max-width: 768px) {
  .container {
    padding: 0 16px;
  }
}

/* ===== Header / Nav ===== */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--nav-height);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  z-index: 1000;
  transition: var(--transition);
}

header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 24px;
  font-weight: 800;
  color: var(--primary-dark);
  letter-spacing: -0.5px;
  text-decoration: none;
}

.logo i {
  font-size: 28px;
  color: var(--primary);
  transition: var(--transition);
}

.logo span {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.logo:hover i {
  transform: scale(1.1) rotate(-8deg);
  color: var(--primary-light);
}

#mainNav {
  display: flex;
  align-items: center;
  gap: 8px;
}

#mainNav a {
  padding: 8px 20px;
  border-radius: 40px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-light);
  transition: var(--transition);
  position: relative;
}

#mainNav a:hover {
  color: var(--primary);
  background: rgba(26, 107, 90, 0.06);
}

#mainNav a.active {
  color: #fff;
  background: var(--primary);
  box-shadow: 0 4px 14px rgba(26, 107, 90, 0.25);
}

#mainNav a.active:hover {
  background: var(--primary-light);
  color: #fff;
}

.nav-cta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-left: 16px;
}

.nav-cta .btn-search {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: none;
  background: var(--bg-alt);
  color: var(--text-light);
  font-size: 16px;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
}

.nav-cta .btn-search:hover {
  background: var(--primary);
  color: #fff;
}

.mobile-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border: none;
  background: transparent;
  font-size: 24px;
  color: var(--text);
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.mobile-toggle:hover {
  background: var(--bg-alt);
}

@media (max-width: 768px) {
  .mobile-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
  }

  #mainNav {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(16px);
    flex-direction: column;
    padding: 24px 20px 32px;
    gap: 6px;
    border-bottom: 1px solid var(--border);
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: var(--transition);
    box-shadow: var(--shadow-lg);
  }

  #mainNav.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }

  #mainNav a {
    width: 100%;
    padding: 12px 20px;
    font-size: 16px;
  }

  .nav-cta {
    margin-left: 0;
    margin-top: 12px;
    width: 100%;
    justify-content: center;
  }
}

/* ===== Article Banner ===== */
.article-banner {
  position: relative;
  padding: 60px 0 40px;
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
  overflow: hidden;
  min-height: 280px;
  display: flex;
  align-items: center;
}

.article-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  opacity: 0.12;
  mix-blend-mode: overlay;
}

.article-banner .container {
  position: relative;
  z-index: 2;
  width: 100%;
}

.article-breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.article-breadcrumb a {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  transition: var(--transition);
}

.article-breadcrumb a:hover {
  color: #fff;
}

.article-breadcrumb .sep {
  color: rgba(255, 255, 255, 0.4);
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px 24px;
  margin-bottom: 16px;
  align-items: center;
}

.article-meta .meta-item {
  display: flex;
  align-items: center;
  gap: 6px;
  color: rgba(255, 255, 255, 0.75);
  font-size: 14px;
}

.article-meta .meta-item i {
  font-size: 14px;
  opacity: 0.8;
}

.article-meta .category-tag {
  display: inline-block;
  padding: 4px 16px;
  border-radius: 40px;
  background: var(--secondary);
  color: var(--primary-dark);
  font-size: 13px;
  font-weight: 600;
}

.article-title {
  font-size: 36px;
  font-weight: 800;
  color: #fff;
  line-height: 1.3;
  max-width: 900px;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

@media (max-width: 768px) {
  .article-banner {
    padding: 40px 0 32px;
    min-height: 220px;
  }

  .article-title {
    font-size: 26px;
  }

  .article-meta {
    gap: 12px 16px;
  }
}

@media (max-width: 520px) {
  .article-title {
    font-size: 22px;
  }
}

/* ===== Article Content ===== */
.article-main {
  padding: 48px 0 64px;
}

.article-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 40px;
  align-items: start;
}

.article-body {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 40px 44px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}

.article-body .content {
  font-size: 17px;
  line-height: 1.9;
  color: var(--text);
}

.article-body .content p {
  margin-bottom: 1.6em;
}

.article-body .content h2,
.article-body .content h3 {
  margin-top: 2em;
  margin-bottom: 0.8em;
  font-weight: 700;
  color: var(--primary-dark);
  line-height: 1.4;
}

.article-body .content h2 {
  font-size: 26px;
  border-bottom: 2px solid var(--border);
  padding-bottom: 12px;
}

.article-body .content h3 {
  font-size: 20px;
}

.article-body .content ul,
.article-body .content ol {
  margin-bottom: 1.6em;
  padding-left: 24px;
}

.article-body .content li {
  margin-bottom: 0.5em;
}

.article-body .content img {
  border-radius: var(--radius-sm);
  margin: 24px 0;
  box-shadow: var(--shadow);
}

.article-body .content blockquote {
  border-left: 4px solid var(--primary);
  padding: 16px 24px;
  margin: 24px 0;
  background: var(--bg-alt);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--text-light);
  font-style: italic;
}

.article-body .content a {
  color: var(--primary);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.article-body .content a:hover {
  color: var(--primary-light);
}

.article-not-found {
  text-align: center;
  padding: 80px 24px;
}

.article-not-found i {
  font-size: 64px;
  color: var(--text-muted);
  margin-bottom: 24px;
  display: block;
}

.article-not-found h2 {
  font-size: 28px;
  color: var(--text);
  margin-bottom: 12px;
}

.article-not-found p {
  color: var(--text-light);
  margin-bottom: 24px;
}

.article-not-found .btn-back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 32px;
  border-radius: 40px;
  background: var(--primary);
  color: #fff;
  font-weight: 600;
  transition: var(--transition);
}

.article-not-found .btn-back:hover {
  background: var(--primary-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
  color: #fff;
}

/* ===== Sidebar ===== */
.article-sidebar {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.sidebar-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}

.sidebar-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--primary-dark);
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.sidebar-card h3 i {
  color: var(--primary);
  font-size: 18px;
}

.sidebar-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.sidebar-list li {
  border-bottom: 1px solid var(--border);
}

.sidebar-list li:last-child {
  border-bottom: none;
}

.sidebar-list a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 0;
  color: var(--text-light);
  font-size: 15px;
  transition: var(--transition);
}

.sidebar-list a:hover {
  color: var(--primary);
  padding-left: 6px;
}

.sidebar-list a .badge {
  margin-left: auto;
  background: var(--bg-alt);
  color: var(--text-muted);
  font-size: 12px;
  padding: 2px 10px;
  border-radius: 40px;
}

.sidebar-cta {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  color: #fff;
  border: none;
}

.sidebar-cta h3 {
  color: #fff;
}

.sidebar-cta h3 i {
  color: var(--secondary);
}

.sidebar-cta p {
  color: rgba(255, 255, 255, 0.85);
  font-size: 14px;
  margin-bottom: 20px;
  line-height: 1.7;
}

.sidebar-cta .btn-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 40px;
  background: var(--secondary);
  color: var(--primary-dark);
  font-weight: 700;
  font-size: 15px;
  transition: var(--transition);
  width: 100%;
  justify-content: center;
}

.sidebar-cta .btn-cta:hover {
  background: var(--secondary-light);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(245, 166, 35, 0.3);
  color: var(--primary-dark);
}

@media (max-width: 1024px) {
  .article-layout {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .article-sidebar {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
  }
}

@media (max-width: 640px) {
  .article-body {
    padding: 28px 20px;
  }

  .article-sidebar {
    grid-template-columns: 1fr;
  }
}

/* ===== Related Section ===== */
.related-section {
  padding: 48px 0 64px;
  background: var(--bg-alt);
}

.related-section .section-title {
  font-size: 28px;
  font-weight: 800;
  color: var(--primary-dark);
  margin-bottom: 32px;
  text-align: center;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.related-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  transition: var(--transition);
}

.related-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.related-card .card-img {
  height: 180px;
  background: var(--bg-alt);
  position: relative;
  overflow: hidden;
}

.related-card .card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 0;
}

.related-card .card-body {
  padding: 20px 24px 24px;
}

.related-card .card-body h4 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 8px;
  line-height: 1.4;
}

.related-card .card-body h4 a {
  color: var(--text);
}

.related-card .card-body h4 a:hover {
  color: var(--primary);
}

.related-card .card-body p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.related-card .card-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 12px;
  font-size: 13px;
  color: var(--text-muted);
}

@media (max-width: 1024px) {
  .related-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .related-grid {
    grid-template-columns: 1fr;
  }

  .related-section .section-title {
    font-size: 22px;
  }
}

/* ===== Footer ===== */
footer {
  background: var(--primary-dark);
  color: rgba(255, 255, 255, 0.85);
  padding: 60px 0 0;
}

footer .footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

footer .footer-brand .logo {
  color: #fff;
  margin-bottom: 16px;
}

footer .footer-brand .logo i {
  color: var(--secondary);
}

footer .footer-brand .logo span {
  background: none;
  -webkit-text-fill-color: #fff;
  color: #fff;
}

footer .footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.6);
  max-width: 360px;
}

footer .footer-col h4 {
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 20px;
  position: relative;
  padding-bottom: 12px;
}

footer .footer-col h4::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 32px;
  height: 3px;
  background: var(--secondary);
  border-radius: 4px;
}

footer .footer-col ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

footer .footer-col ul li a {
  color: rgba(255, 255, 255, 0.6);
  font-size: 14px;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

footer .footer-col ul li a:hover {
  color: var(--secondary);
  padding-left: 4px;
}

footer .footer-col ul li a i {
  font-size: 16px;
}

footer .footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 0;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.4);
  flex-wrap: wrap;
  gap: 12px;
}

footer .footer-bottom .footer-links {
  display: flex;
  gap: 20px;
}

footer .footer-bottom .footer-links a {
  color: rgba(255, 255, 255, 0.4);
  font-size: 13px;
  transition: var(--transition);
}

footer .footer-bottom .footer-links a:hover {
  color: var(--secondary);
}

@media (max-width: 1024px) {
  footer .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

@media (max-width: 640px) {
  footer {
    padding: 40px 0 0;
  }

  footer .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  footer .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  footer .footer-bottom .footer-links {
    justify-content: center;
  }
}

/* ===== Utility ===== */
.text-center {
  text-align: center;
}

.mt-16 {
  margin-top: 16px;
}

.mt-24 {
  margin-top: 24px;
}

.mb-16 {
  margin-bottom: 16px;
}

.mb-24 {
  margin-bottom: 24px;
}

/* ===== Scrollbar ===== */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg);
}

::-webkit-scrollbar-thumb {
  background: var(--text-muted);
  border-radius: 8px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-light);
}

/* ===== Print ===== */
@media print {
  header,
  .article-sidebar,
  .related-section,
  footer,
  .nav-cta,
  .mobile-toggle {
    display: none !important;
  }

  body {
    padding-top: 0;
    background: #fff;
  }

  .article-banner {
    background: #f8faf9 !important;
    padding: 24px 0;
    min-height: auto;
  }

  .article-title {
    color: var(--text);
    text-shadow: none;
  }

  .article-meta .meta-item {
    color: var(--text-light);
  }

  .article-body {
    box-shadow: none;
    border: none;
    padding: 24px 0;
  }
}

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a7a5c;
            --primary-dark: #0f5c44;
            --primary-light: #2a9d7a;
            --primary-bg: #e8f5ee;
            --secondary: #f5a623;
            --secondary-light: #ffd966;
            --accent: #ff6b6b;
            --bg: #f8faf9;
            --bg-alt: #ffffff;
            --bg-card: #ffffff;
            --bg-dark: #1a2e28;
            --text: #1e2a26;
            --text-light: #5a6b64;
            --text-lighter: #8a9b94;
            --border: #dce8e2;
            --border-light: #edf3ef;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08), 0 2px 4px rgba(0, 0, 0, 0.04);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12);
            --shadow-hover: 0 16px 48px rgba(26, 122, 92, 0.18);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --max-width: 1200px;
            --header-h: 72px;
        }

        /* ===== 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);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            padding-top: var(--header-h);
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            outline: none;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            color: var(--text);
            font-weight: 700;
        }
        h1 {
            font-size: clamp(2rem, 5vw, 3.2rem);
        }
        h2 {
            font-size: clamp(1.5rem, 3.5vw, 2.2rem);
            margin-bottom: 0.5em;
        }
        h3 {
            font-size: clamp(1.1rem, 2vw, 1.4rem);
        }
        p {
            color: var(--text-light);
            margin-bottom: 1em;
        }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .section {
            padding: 80px 0;
        }
        .section-alt {
            background: var(--bg-alt);
        }
        .section-dark {
            background: var(--bg-dark);
            color: #fff;
        }
        .section-dark h2,
        .section-dark h3,
        .section-dark p {
            color: #fff;
        }
        .text-center {
            text-align: center;
        }
        .text-light {
            color: var(--text-light);
        }
        .mb-1 {
            margin-bottom: 1rem;
        }
        .mb-2 {
            margin-bottom: 2rem;
        }
        .mb-3 {
            margin-bottom: 3rem;
        }

        /* ===== 导航 ===== */
        header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-h);
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-light);
            transition: box-shadow var(--transition);
        }
        header.scrolled {
            box-shadow: var(--shadow-md);
        }
        .header-inner {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--primary-dark);
            letter-spacing: -0.5px;
            flex-shrink: 0;
        }
        .logo i {
            font-size: 1.7rem;
            color: var(--primary);
        }
        .logo span {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .logo:hover {
            color: var(--primary-dark);
        }
        #mainNav {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        #mainNav a {
            display: inline-flex;
            align-items: center;
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-light);
            transition: all var(--transition);
            position: relative;
        }
        #mainNav a:hover {
            color: var(--primary);
            background: var(--primary-bg);
        }
        #mainNav a.active {
            color: var(--primary-dark);
            background: var(--primary-bg);
            font-weight: 600;
        }
        #mainNav a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 18px;
            right: 18px;
            height: 3px;
            background: var(--primary);
            border-radius: 3px;
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .nav-search {
            display: flex;
            align-items: center;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 50px;
            padding: 0 16px;
            transition: all var(--transition);
        }
        .nav-search:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(26, 122, 92, 0.15);
        }
        .nav-search input {
            border: none;
            background: transparent;
            padding: 8px 8px 8px 0;
            width: 140px;
            font-size: 0.9rem;
            color: var(--text);
        }
        .nav-search input::placeholder {
            color: var(--text-lighter);
        }
        .nav-search button {
            background: none;
            border: none;
            color: var(--text-lighter);
            cursor: pointer;
            padding: 6px;
            transition: color var(--transition);
        }
        .nav-search button:hover {
            color: var(--primary);
        }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 24px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            box-shadow: 0 4px 12px rgba(26, 122, 92, 0.3);
        }
        .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(26, 122, 92, 0.4);
            color: #fff;
        }
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--text);
            cursor: pointer;
            padding: 6px;
            transition: color var(--transition);
        }
        .mobile-toggle:hover {
            color: var(--primary);
        }

        /* ===== Banner 内页横幅 ===== */
        .page-banner {
            position: relative;
            padding: 100px 0 80px;
            background: linear-gradient(135deg, var(--bg-dark) 0%, #0f2a22 100%);
            overflow: hidden;
            min-height: 280px;
            display: flex;
            align-items: center;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            opacity: 0.15;
            mix-blend-mode: overlay;
        }
        .page-banner::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(26, 122, 92, 0.3) 0%, transparent 70%);
        }
        .page-banner .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .page-banner h1 {
            color: #fff;
            font-size: clamp(2rem, 5vw, 3.2rem);
            font-weight: 800;
            letter-spacing: -1px;
            margin-bottom: 16px;
        }
        .page-banner p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 1.15rem;
            max-width: 640px;
            margin: 0 auto;
            line-height: 1.8;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            margin-bottom: 24px;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.6);
        }
        .breadcrumb a {
            color: rgba(255, 255, 255, 0.7);
        }
        .breadcrumb a:hover {
            color: #fff;
        }
        .breadcrumb i {
            font-size: 0.6rem;
            color: rgba(255, 255, 255, 0.4);
        }

        /* ===== 分类标签导航 ===== */
        .category-tabs {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
            margin-top: 32px;
        }
        .category-tabs a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 22px;
            border-radius: 50px;
            background: rgba(255, 255, 255, 0.1);
            color: rgba(255, 255, 255, 0.8);
            font-weight: 500;
            font-size: 0.9rem;
            border: 1px solid rgba(255, 255, 255, 0.15);
            transition: all var(--transition);
        }
        .category-tabs a:hover,
        .category-tabs a.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(26, 122, 92, 0.35);
        }

        /* ===== 卡片网格 ===== */
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }
        .card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            border: 1px solid var(--border-light);
        }
        .card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary-bg);
        }
        .card-img {
            width: 100%;
            aspect-ratio: 16/10;
            object-fit: cover;
            display: block;
            transition: transform 0.5s ease;
        }
        .card:hover .card-img {
            transform: scale(1.05);
        }
        .card-body {
            padding: 24px;
        }
        .card-body h3 {
            font-size: 1.15rem;
            margin-bottom: 10px;
            color: var(--text);
        }
        .card-body p {
            font-size: 0.92rem;
            color: var(--text-light);
            margin-bottom: 16px;
            line-height: 1.7;
        }
        .card-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            margin-bottom: 12px;
        }
        .card-tags span {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 50px;
            background: var(--primary-bg);
            color: var(--primary-dark);
            font-size: 0.78rem;
            font-weight: 500;
        }
        .card-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 0.82rem;
            color: var(--text-lighter);
        }
        .card-meta i {
            margin-right: 4px;
        }
        .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 600;
            color: var(--primary);
            font-size: 0.9rem;
            transition: gap var(--transition);
        }
        .card-link:hover {
            gap: 12px;
            color: var(--primary-dark);
        }

        /* ===== 图文区块 ===== */
        .split-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .split-block.reverse {
            direction: rtl;
        }
        .split-block.reverse>* {
            direction: ltr;
        }
        .split-block .img-wrap {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            aspect-ratio: 4/3;
        }
        .split-block .img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .split-block .content h2 {
            margin-bottom: 16px;
        }
        .split-block .content p {
            font-size: 1.05rem;
            line-height: 1.8;
            margin-bottom: 20px;
        }
        .split-block .content ul {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .split-block .content ul li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 0.98rem;
            color: var(--text-light);
        }
        .split-block .content ul li i {
            color: var(--primary);
            font-size: 1.1rem;
            margin-top: 2px;
            flex-shrink: 0;
        }

        /* ===== 步骤流程 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }
        .step-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            position: relative;
        }
        .step-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .step-card::before {
            counter-increment: step;
            content: counter(step);
            position: absolute;
            top: -12px;
            left: 50%;
            transform: translateX(-50%);
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1rem;
            box-shadow: 0 4px 12px rgba(26, 122, 92, 0.3);
        }
        .step-card .icon {
            font-size: 2.2rem;
            color: var(--primary);
            margin-bottom: 16px;
            margin-top: 8px;
        }
        .step-card h4 {
            font-size: 1.1rem;
            margin-bottom: 8px;
        }
        .step-card p {
            font-size: 0.9rem;
            color: var(--text-lighter);
            margin-bottom: 0;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: var(--primary-bg);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            cursor: pointer;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text);
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            transition: background var(--transition);
            gap: 12px;
        }
        .faq-question:hover {
            background: var(--primary-bg);
        }
        .faq-question i {
            color: var(--primary);
            font-size: 1.1rem;
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-item.open .faq-question i {
            transform: rotate(45deg);
        }
        .faq-answer {
            padding: 0 24px 18px;
            font-size: 0.95rem;
            color: var(--text-light);
            line-height: 1.8;
            display: none;
        }
        .faq-item.open .faq-answer {
            display: block;
        }

        /* ===== CTA ===== */
        .cta-block {
            background: linear-gradient(135deg, var(--bg-dark) 0%, #0f2a22 100%);
            border-radius: var(--radius-xl);
            padding: 64px 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-block::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.08;
            mix-blend-mode: overlay;
        }
        .cta-block .container {
            position: relative;
            z-index: 1;
        }
        .cta-block h2 {
            color: #fff;
            font-size: clamp(1.8rem, 4vw, 2.6rem);
            margin-bottom: 16px;
        }
        .cta-block p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 1.1rem;
            max-width: 560px;
            margin: 0 auto 32px;
        }
        .cta-btn-group {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 36px;
            background: var(--primary);
            color: #fff;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            box-shadow: 0 4px 16px rgba(26, 122, 92, 0.35);
        }
        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 32px rgba(26, 122, 92, 0.45);
            color: #fff;
            background: var(--primary-dark);
        }
        .btn-outline-light {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 36px;
            background: transparent;
            color: #fff;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            border: 2px solid rgba(255, 255, 255, 0.3);
            cursor: pointer;
            transition: all var(--transition);
        }
        .btn-outline-light:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
            transform: translateY(-3px);
        }

        /* ===== 页脚 ===== */
        footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.85);
            padding: 60px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-brand .logo {
            font-size: 1.5rem;
            margin-bottom: 16px;
            color: #fff;
        }
        .footer-brand .logo i {
            color: var(--primary-light);
        }
        .footer-brand .logo span {
            -webkit-text-fill-color: #fff;
            background: none;
        }
        .footer-brand p {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.92rem;
            max-width: 320px;
            line-height: 1.7;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 1.05rem;
            margin-bottom: 18px;
            font-weight: 600;
        }
        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .footer-col ul li a:hover {
            color: var(--primary-light);
            transform: translateX(4px);
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 24px 0;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.4);
        }
        .footer-bottom .footer-links {
            display: flex;
            gap: 20px;
        }
        .footer-bottom .footer-links a {
            color: rgba(255, 255, 255, 0.4);
            transition: color var(--transition);
        }
        .footer-bottom .footer-links a:hover {
            color: var(--primary-light);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .grid-3 {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 32px;
            }
            .split-block {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .split-block.reverse {
                direction: ltr;
            }
            .page-banner {
                padding: 80px 0 60px;
                min-height: 220px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --header-h: 64px;
            }
            .section {
                padding: 56px 0;
            }
            .container {
                padding: 0 16px;
            }
            #mainNav {
                position: fixed;
                top: var(--header-h);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(12px);
                -webkit-backdrop-filter: blur(12px);
                flex-direction: column;
                padding: 16px 24px;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-lg);
                transform: translateY(-120%);
                opacity: 0;
                transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
                pointer-events: none;
                gap: 4px;
            }
            #mainNav.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            #mainNav a {
                padding: 12px 16px;
                width: 100%;
                border-radius: var(--radius-sm);
            }
            #mainNav a.active::after {
                display: none;
            }
            #mainNav a.active {
                background: var(--primary-bg);
            }
            .mobile-toggle {
                display: block;
            }
            .nav-actions .nav-search {
                display: none;
            }
            .nav-actions .nav-cta {
                padding: 8px 18px;
                font-size: 0.85rem;
            }
            .grid-3 {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .grid-2 {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .steps-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .cta-block {
                padding: 40px 24px;
                border-radius: var(--radius-lg);
            }
            .category-tabs a {
                padding: 8px 16px;
                font-size: 0.85rem;
            }
            .page-banner {
                padding: 64px 0 48px;
                min-height: 180px;
            }
            .page-banner h1 {
                font-size: 1.6rem;
            }
            .page-banner p {
                font-size: 0.95rem;
            }
            .split-block .img-wrap {
                aspect-ratio: 16/10;
            }
            .card-body {
                padding: 18px;
            }
        }

        @media (max-width: 520px) {
            .page-banner {
                padding: 48px 0 36px;
                min-height: 140px;
            }
            .page-banner h1 {
                font-size: 1.35rem;
            }
            .nav-actions .nav-cta {
                padding: 6px 14px;
                font-size: 0.8rem;
                gap: 4px;
            }
            .nav-actions .nav-cta span {
                display: none;
            }
            .logo {
                font-size: 1.25rem;
            }
            .logo i {
                font-size: 1.3rem;
            }
            .cta-btn-group {
                flex-direction: column;
                align-items: center;
            }
            .btn-primary,
            .btn-outline-light {
                width: 100%;
                justify-content: center;
            }
            .step-card {
                padding: 24px 16px;
            }
            .faq-question {
                padding: 14px 16px;
                font-size: 0.92rem;
            }
            .faq-answer {
                padding: 0 16px 14px;
            }
        }

        /* ===== 工具类 ===== */
        .section-title {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-title p {
            max-width: 560px;
            margin: 8px auto 0;
            color: var(--text-lighter);
            font-size: 1.05rem;
        }
        .badge {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 50px;
            background: var(--primary-bg);
            color: var(--primary-dark);
            font-size: 0.8rem;
            font-weight: 600;
            margin-bottom: 12px;
        }
        .badge-secondary {
            background: rgba(245, 166, 35, 0.15);
            color: #b87a0f;
        }
        .mt-2 {
            margin-top: 2rem;
        }
        .mt-3 {
            margin-top: 3rem;
        }
        .gap-1 {
            gap: 1rem;
        }

        /* ===== 平滑滚动 & 焦点 ===== */
        :focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }
        ::selection {
            background: var(--primary);
            color: #fff;
        }