/* roulang page: index */
:root {
  --primary: #E87A3E;
  --primary-dark: #D06A2E;
  --primary-light: #FFF5EE;
  --secondary: #4A8DB7;
  --accent: #D4A84B;
  --bg-warm: #FDF9F5;
  --bg-cream: #F5E6D3;
  --text-dark: #1E2A3A;
  --text-mid: #5A6A7A;
  --text-light: #8A9AAA;
  --border-light: #E5DDD5;
  --white: #FFFFFF;
  --shadow-sm: 0 2px 8px rgba(232,122,62,0.08);
  --shadow-md: 0 4px 20px rgba(232,122,62,0.12);
  --shadow-lg: 0 8px 30px rgba(232,122,62,0.2);
  --radius-lg: 16px;
  --radius-md: 8px;
  --radius-sm: 4px;
  --font-family: "PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --nav-width: 220px;
  --nav-collapsed: 72px;
  --max-width: 1200px;
  --gap: 24px;
  --section-gap: 96px;
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font-family);background:var(--bg-warm);color:var(--text-dark);line-height:1.8;font-size:16px;min-height:100vh}
a{color:inherit;text-decoration:none;transition:color .3s}
img{max-width:100%;height:auto;display:block;border-radius:var(--radius-md)}
ul,ol{list-style:none}
button,input,textarea{font-family:inherit;font-size:1rem;border:none;outline:none}
button{cursor:pointer}
h1,h2,h3,h4,h5,h6{line-height:1.3;color:var(--text-dark)}
.container{max-width:var(--max-width);margin:0 auto;padding:0 48px}.container-fluid{width:100%}

/* 布局 */
.layout{display:flex;min-height:100vh}
.sidebar{position:fixed;top:0;left:0;width:var(--nav-width);height:100vh;background:var(--text-dark);color:var(--white);z-index:1000;display:flex;flex-direction:column;transition:width .3s;overflow:hidden;box-shadow:2px 0 20px rgba(0,0,0,0.15)}
.sidebar-brand{display:flex;align-items:center;gap:12px;padding:28px 20px 20px;border-bottom:1px solid rgba(255,255,255,0.08)}
.sidebar-brand .logo-icon{width:36px;height:36px;background:linear-gradient(135deg,var(--primary),var(--secondary));border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;font-size:1.1rem;font-weight:700;color:var(--white);flex-shrink:0}
.sidebar-brand .logo-text{font-size:1.05rem;font-weight:600;letter-spacing:0.03em;white-space:nowrap;color:var(--white)}
.sidebar-brand .logo-text span{color:var(--primary)}
.sidebar-nav{flex:1;padding:20px 0;overflow-y:auto}
.sidebar-nav .nav-item{display:flex;align-items:center;gap:14px;padding:12px 20px;color:rgba(255,255,255,0.7);font-size:0.95rem;font-weight:500;transition:all .25s;border-left:3px solid transparent;white-space:nowrap}
.sidebar-nav .nav-item:hover{color:var(--white);background:rgba(255,255,255,0.06);border-left-color:var(--primary)}
.sidebar-nav .nav-item.active{color:var(--white);background:rgba(232,122,62,0.15);border-left-color:var(--primary)}
.sidebar-nav .nav-item i{width:20px;text-align:center;font-size:1.1rem;flex-shrink:0}
.sidebar-nav .nav-item .nav-label{overflow:hidden;text-overflow:ellipsis}
.sidebar-footer{padding:20px;border-top:1px solid rgba(255,255,255,0.08);display:flex;gap:12px;justify-content:center}
.sidebar-footer a{color:rgba(255,255,255,0.5);font-size:1.15rem;transition:color .3s}
.sidebar-footer a:hover{color:var(--primary)}
.main-content{margin-left:var(--nav-width);flex:1;min-height:100vh;display:flex;flex-direction:column}

/* 移动端顶部导航 */
.mobile-header{display:none;position:fixed;top:0;left:0;width:100%;height:60px;background:var(--text-dark);color:var(--white);z-index:1100;align-items:center;padding:0 20px;box-shadow:0 2px 12px rgba(0,0,0,0.15)}
.mobile-header .logo-icon{width:32px;height:32px;background:linear-gradient(135deg,var(--primary),var(--secondary));border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;font-size:0.95rem;font-weight:700;color:var(--white);flex-shrink:0;margin-right:10px}
.mobile-header .logo-text{font-size:1rem;font-weight:600;color:var(--white);flex:1}
.mobile-header .logo-text span{color:var(--primary)}
.mobile-header .hamburger{background:none;color:var(--white);font-size:1.5rem;padding:4px 8px;border-radius:var(--radius-sm);transition:background .3s}
.mobile-header .hamburger:hover{background:rgba(255,255,255,0.1)}
.mobile-overlay{display:none;position:fixed;top:60px;left:0;width:100%;height:calc(100vh - 60px);background:rgba(30,42,58,0.97);z-index:1050;padding:24px 20px;overflow-y:auto;backdrop-filter:blur(8px)}
.mobile-overlay .nav-item{display:flex;align-items:center;gap:14px;padding:16px 12px;color:rgba(255,255,255,0.75);font-size:1rem;border-bottom:1px solid rgba(255,255,255,0.06);transition:all .25s}
.mobile-overlay .nav-item:hover,.mobile-overlay .nav-item.active{color:var(--primary);background:rgba(232,122,62,0.08)}
.mobile-overlay .nav-item i{width:22px;text-align:center;font-size:1.1rem}
.mobile-overlay .nav-footer{display:flex;gap:16px;justify-content:center;padding:24px 0 0;color:rgba(255,255,255,0.4);font-size:1.2rem}
.mobile-overlay .nav-footer a{color:inherit;transition:color .3s}
.mobile-overlay .nav-footer a:hover{color:var(--primary)}

/* 通用板块 */
.section{padding:var(--section-gap) 0}
.section-title{font-size:1.75rem;font-weight:600;margin-bottom:12px;letter-spacing:0.02em}
.section-subtitle{font-size:1.05rem;color:var(--text-mid);margin-bottom:40px;max-width:640px}
.text-center{text-align:center}.text-center .section-subtitle{margin-left:auto;margin-right:auto}

/* Hero */
.hero{position:relative;min-height:85vh;display:flex;align-items:center;background:linear-gradient(135deg,#E87A3E 0%,#4A8DB7 55%,#2C5F7A 100%);overflow:hidden;padding:80px 0}
.hero::before{content:'';position:absolute;inset:0;background:url('/assets/images/backpic/back-1.webp') center/cover no-repeat;opacity:0.25;mix-blend-mode:overlay}
.hero .container{position:relative;z-index:2;display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.hero-content h1{font-size:3rem;font-weight:700;color:var(--white);line-height:1.25;margin-bottom:20px;letter-spacing:0.02em;text-shadow:0 2px 20px rgba(0,0,0,0.15)}
.hero-content h1 span{color:var(--accent)}
.hero-content p{font-size:1.2rem;color:rgba(255,255,255,0.9);line-height:1.7;margin-bottom:32px;max-width:520px}
.hero-actions{display:flex;flex-wrap:wrap;gap:16px;margin-bottom:40px}
.hero-actions .btn-primary{padding:14px 36px;background:var(--accent);color:var(--white);border-radius:var(--radius-md);font-weight:600;font-size:1.05rem;transition:all .3s;box-shadow:0 4px 15px rgba(212,168,75,0.4)}
.hero-actions .btn-primary:hover{background:#C4963A;transform:translateY(-2px);box-shadow:0 6px 25px rgba(212,168,75,0.5)}
.hero-actions .btn-outline{padding:14px 36px;background:transparent;color:var(--white);border:2px solid rgba(255,255,255,0.6);border-radius:var(--radius-md);font-weight:600;font-size:1.05rem;transition:all .3s}
.hero-actions .btn-outline:hover{background:rgba(255,255,255,0.12);border-color:var(--white)}
.hero-badges{display:flex;gap:20px;flex-wrap:wrap}
.hero-badges .badge{background:rgba(255,255,255,0.12);backdrop-filter:blur(8px);border-radius:var(--radius-md);padding:12px 24px;text-align:center;border:1px solid rgba(255,255,255,0.15);min-width:120px}
.hero-badges .badge .num{font-size:1.8rem;font-weight:700;color:var(--accent);display:block;line-height:1.2}
.hero-badges .badge .label{font-size:0.8rem;color:rgba(255,255,255,0.8);margin-top:2px}
.hero-image{display:flex;justify-content:center;align-items:center}
.hero-image img{width:100%;max-width:520px;border-radius:var(--radius-lg);box-shadow:0 20px 60px rgba(0,0,0,0.25);transform:perspective(800px) rotateY(-4deg);transition:transform .5s}
.hero-image img:hover{transform:perspective(800px) rotateY(0deg)}

/* 业务板块导航 */
.categories-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--gap)}
.category-card{background:var(--white);border-radius:var(--radius-lg);padding:32px 24px 28px;box-shadow:var(--shadow-sm);border:1px solid var(--border-light);transition:all .3s;text-align:center}
.category-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:var(--primary)}
.category-card .icon{width:56px;height:56px;margin:0 auto 18px;background:linear-gradient(135deg,var(--primary),var(--secondary));border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;font-size:1.6rem;color:var(--white)}
.category-card h3{font-size:1.15rem;font-weight:600;margin-bottom:8px}
.category-card p{font-size:0.9rem;color:var(--text-mid);margin-bottom:16px;line-height:1.6}
.category-card .badge-count{display:inline-block;padding:4px 16px;background:var(--accent);color:var(--white);border-radius:20px;font-size:0.8rem;font-weight:600}

/* 精选条目 */
.featured-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap)}
.featured-card{background:var(--white);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-sm);border:1px solid var(--border-light);transition:all .3s;display:flex;flex-direction:column}
.featured-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.featured-card .card-img{width:100%;height:200px;object-fit:cover;border-radius:0}
.featured-card .card-body{padding:24px 20px 20px;flex:1;display:flex;flex-direction:column}
.featured-card .card-body .tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:12px}
.featured-card .card-body .tags span{padding:2px 12px;border-radius:20px;font-size:0.75rem;font-weight:500;background:var(--primary-light);color:var(--primary);border:1px solid rgba(232,122,62,0.2)}
.featured-card .card-body h3{font-size:1.1rem;font-weight:600;margin-bottom:10px;line-height:1.4}
.featured-card .card-body p{font-size:0.9rem;color:var(--text-mid);line-height:1.6;flex:1;margin-bottom:16px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.featured-card .card-footer{display:flex;justify-content:space-between;align-items:center;padding:0 20px 20px}
.featured-card .card-footer .btn-text{color:var(--primary);font-weight:600;font-size:0.9rem;display:flex;align-items:center;gap:6px;transition:gap .3s}
.featured-card .card-footer .btn-text:hover{gap:10px}
.featured-card .card-footer .actions{display:flex;gap:10px;color:var(--text-light);font-size:0.95rem}
.featured-card .card-footer .actions button{background:none;color:var(--text-light);font-size:0.95rem;transition:color .3s}
.featured-card .card-footer .actions button:hover{color:var(--primary)}

/* 最新资讯列表 */
.news-section{background:var(--bg-cream)}
.news-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:32px;flex-wrap:wrap;gap:12px}
.news-header .section-title{margin-bottom:0}
.news-header .link-more{color:var(--primary);font-weight:500;font-size:0.95rem;display:flex;align-items:center;gap:6px;transition:gap .3s}
.news-header .link-more:hover{gap:10px}
.news-list{display:flex;flex-direction:column;gap:16px}
.news-item{display:flex;align-items:flex-start;gap:16px;padding:20px 24px;background:var(--white);border-radius:var(--radius-md);box-shadow:var(--shadow-sm);border:1px solid var(--border-light);transition:all .3s}
.news-item:hover{box-shadow:var(--shadow-md);border-color:rgba(232,122,62,0.2)}
.news-item .news-tag{flex-shrink:0;padding:2px 14px;border-radius:20px;font-size:0.75rem;font-weight:500;background:var(--primary-light);color:var(--primary);border:1px solid rgba(232,122,62,0.2);margin-top:2px}
.news-item .news-content{flex:1;min-width:0}
.news-item .news-content h4{font-size:1rem;font-weight:600;margin-bottom:4px;transition:color .3s}
.news-item:hover .news-content h4{color:var(--primary)}
.news-item .news-content p{font-size:0.85rem;color:var(--text-mid);line-height:1.5;display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden}
.news-item .news-meta{flex-shrink:0;text-align:right;color:var(--text-light);font-size:0.8rem;white-space:nowrap}
.news-empty{text-align:center;padding:48px 20px;color:var(--text-mid);background:var(--white);border-radius:var(--radius-md);border:1px dashed var(--border-light);font-size:1rem}

/* 相关推荐 */
.recommend-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--gap)}
.recommend-card{background:var(--white);border-radius:var(--radius-md);overflow:hidden;box-shadow:var(--shadow-sm);border:1px solid var(--border-light);transition:all .3s}
.recommend-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md)}
.recommend-card img{width:100%;height:140px;object-fit:cover}
.recommend-card .rc-body{padding:16px}
.recommend-card .rc-body h4{font-size:0.95rem;font-weight:600;margin-bottom:6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.recommend-card .rc-body p{font-size:0.8rem;color:var(--text-mid);line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:10px}
.recommend-card .rc-body .rc-meta{font-size:0.75rem;color:var(--text-light);display:flex;justify-content:space-between;align-items:center}
.recommend-card .rc-body .rc-meta a{color:var(--primary);font-weight:500}

/* FAQ */
.faq-list{max-width:800px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
.faq-item{border:1px solid var(--border-light);border-radius:var(--radius-md);background:var(--white);overflow:hidden;transition:all .3s}
.faq-item:hover{border-color:rgba(232,122,62,0.3)}
.faq-item .faq-q{display:flex;justify-content:space-between;align-items:center;padding:18px 24px;cursor:pointer;font-weight:600;font-size:1rem;color:var(--text-dark);transition:background .3s;user-select:none}
.faq-item .faq-q:hover{background:var(--primary-light)}
.faq-item .faq-q .faq-icon{font-size:1.2rem;color:var(--primary);transition:transform .3s;flex-shrink:0}
.faq-item.active .faq-q .faq-icon{transform:rotate(45deg)}
.faq-item .faq-a{padding:0 24px 18px;color:var(--text-mid);font-size:0.95rem;line-height:1.7;display:none}
.faq-item.active .faq-a{display:block}
.faq-item.active{border-color:rgba(232,122,62,0.3)}

/* CTA */
.cta-section{background:linear-gradient(135deg,var(--primary),#D06A2E);padding:72px 0;text-align:center;color:var(--white)}
.cta-section h2{font-size:2rem;font-weight:700;margin-bottom:16px;color:var(--white)}
.cta-section p{font-size:1.1rem;color:rgba(255,255,255,0.9);max-width:600px;margin:0 auto 32px}
.cta-section .btn-cta{padding:16px 48px;background:var(--accent);color:var(--white);border-radius:var(--radius-md);font-weight:700;font-size:1.1rem;transition:all .3s;box-shadow:0 4px 20px rgba(212,168,75,0.4);display:inline-block}
.cta-section .btn-cta:hover{background:#C4963A;transform:translateY(-3px);box-shadow:0 8px 30px rgba(212,168,75,0.5)}

/* 页脚 */
.footer{background:var(--text-dark);color:rgba(255,255,255,0.7);padding:60px 0 0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:40px}
.footer-brand .logo-text{font-size:1.2rem;font-weight:700;color:var(--white);margin-bottom:16px;display:flex;align-items:center;gap:10px}
.footer-brand .logo-text span{color:var(--primary)}
.footer-brand p{font-size:0.9rem;line-height:1.7;max-width:320px;color:rgba(255,255,255,0.6)}
.footer-col h4{font-size:1rem;font-weight:600;color:var(--white);margin-bottom:18px}
.footer-col ul li{margin-bottom:10px}
.footer-col ul li a{font-size:0.9rem;color:rgba(255,255,255,0.55);transition:color .3s}
.footer-col ul li a:hover{color:var(--primary)}
.footer-social{display:flex;gap:14px;margin-top:16px}
.footer-social a{width:36px;height:36px;border-radius:50%;border:1px solid rgba(255,255,255,0.15);display:flex;align-items:center;justify-content:center;color:rgba(255,255,255,0.5);font-size:1rem;transition:all .3s}
.footer-social a:hover{background:var(--primary);border-color:var(--primary);color:var(--white)}
.footer-bottom{border-top:1px solid rgba(255,255,255,0.06);padding:20px 0;text-align:center;font-size:0.85rem;color:rgba(255,255,255,0.4)}

/* 浮动收藏/分享 */
.float-actions{position:fixed;bottom:32px;right:32px;z-index:900;display:flex;flex-direction:column;gap:10px}
.float-actions button{width:48px;height:48px;border-radius:50%;background:var(--white);color:var(--text-dark);box-shadow:var(--shadow-md);border:1px solid var(--border-light);font-size:1.15rem;transition:all .3s;display:flex;align-items:center;justify-content:center}
.float-actions button:hover{background:var(--primary);color:var(--white);border-color:var(--primary);transform:scale(1.05)}
.share-popup{position:absolute;bottom:58px;right:0;background:var(--white);border-radius:var(--radius-md);box-shadow:var(--shadow-lg);padding:12px;display:none;flex-direction:column;gap:8px;border:1px solid var(--border-light)}
.share-popup.show{display:flex}
.share-popup a{display:flex;align-items:center;gap:10px;padding:8px 16px;border-radius:var(--radius-sm);font-size:0.9rem;color:var(--text-dark);transition:background .3s}
.share-popup a:hover{background:var(--primary-light);color:var(--primary)}

/* 响应式 */
@media(max-width:1024px){
  .sidebar{width:var(--nav-collapsed)}
  .sidebar-brand .logo-text{display:none}
  .sidebar-nav .nav-item .nav-label{display:none}
  .sidebar-nav .nav-item{justify-content:center;padding:14px}
  .sidebar-nav .nav-item i{font-size:1.3rem}
  .sidebar-footer a{font-size:1.2rem}
  .main-content{margin-left:var(--nav-collapsed)}
  .hero-content h1{font-size:2.4rem}
  .categories-grid{grid-template-columns:repeat(2,1fr)}
  .featured-grid{grid-template-columns:repeat(2,1fr)}
  .recommend-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:768px){
  .sidebar{display:none}
  .mobile-header{display:flex}
  .main-content{margin-left:0;padding-top:60px}
  .container{padding:0 24px}
  .section{padding:64px 0}
  .hero{min-height:auto;padding:60px 0}
  .hero .container{grid-template-columns:1fr;gap:32px}
  .hero-content h1{font-size:2rem}
  .hero-content p{font-size:1rem}
  .hero-image img{max-width:100%;transform:none}
  .hero-image img:hover{transform:none}
  .hero-badges{justify-content:center}
  .categories-grid{grid-template-columns:repeat(2,1fr)}
  .featured-grid{grid-template-columns:1fr}
  .recommend-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr}
  .float-actions{bottom:20px;right:20px}
  .float-actions button{width:42px;height:42px;font-size:1rem}
  .section-title{font-size:1.5rem}
  .news-item{flex-wrap:wrap;gap:10px}
  .news-item .news-meta{width:100%;text-align:left;padding-left:0}
  .hero-badges .badge{min-width:100px;padding:10px 16px}
  .hero-badges .badge .num{font-size:1.4rem}
}
@media(max-width:520px){
  .container{padding:0 16px}
  .section{padding:48px 0}
  .hero-content h1{font-size:1.6rem}
  .categories-grid{grid-template-columns:1fr}
  .recommend-grid{grid-template-columns:1fr}
  .hero-badges{flex-direction:column;align-items:center}
  .hero-actions{flex-direction:column;align-items:flex-start}
  .hero-actions .btn-primary,.hero-actions .btn-outline{width:100%;text-align:center}
  .news-item{padding:16px}
  .float-actions{bottom:16px;right:16px}
}

/* roulang page: article */
:root {
            --primary: #E87A3E;
            --primary-dark: #D06A2E;
            --primary-light: #FFF5EE;
            --accent: #4A8DB7;
            --accent-light: #E8F0F6;
            --gold: #D4A84B;
            --bg: #FDF9F5;
            --card-bg: #FFFFFF;
            --cream: #F5E6D3;
            --text-dark: #1E2A3A;
            --text-mid: #5A6A7A;
            --text-light: #8A9AAA;
            --border: #E5DDD5;
            --shadow: 0 4px 20px rgba(232, 122, 62, 0.12);
            --shadow-hover: 0 8px 30px rgba(232, 122, 62, 0.2);
            --radius-lg: 16px;
            --radius-md: 8px;
            --radius-sm: 4px;
            --sidebar-width: 220px;
            --sidebar-collapsed: 72px;
            --header-height: 0px;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
            --max-width: 1200px;
            --content-max: 800px;
        }

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

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

        body {
            font-family: var(--font-family);
            font-size: 1rem;
            line-height: 1.8;
            color: var(--text-dark);
            background: var(--bg);
            min-height: 100vh;
            display: flex;
        }

        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-md);
        }

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

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            color: var(--text-dark);
            font-weight: 600;
        }

        /* ===== 侧边导航 ===== */
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-width);
            height: 100vh;
            background: var(--text-dark);
            z-index: 1000;
            display: flex;
            flex-direction: column;
            transition: width var(--transition), transform var(--transition);
            overflow: hidden;
        }

        .sidebar-brand {
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 24px 16px 20px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            flex-shrink: 0;
        }

        .sidebar-brand .logo-text {
            font-size: 1.35rem;
            font-weight: 700;
            color: #fff;
            letter-spacing: 0.04em;
            display: flex;
            align-items: center;
            gap: 2px;
        }

        .sidebar-brand .logo-text span {
            color: var(--primary);
        }

        .sidebar-brand .logo-icon {
            width: 32px;
            height: 32px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-right: 10px;
            font-size: 1.1rem;
            color: #fff;
            flex-shrink: 0;
        }

        .sidebar-nav {
            flex: 1;
            padding: 16px 12px;
            overflow-y: auto;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .sidebar-nav .nav-item {
            display: flex;
            align-items: center;
            padding: 10px 14px;
            border-radius: var(--radius-md);
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.95rem;
            font-weight: 500;
            transition: all var(--transition);
            text-decoration: none;
            gap: 12px;
            white-space: nowrap;
            position: relative;
        }

        .sidebar-nav .nav-item i {
            width: 20px;
            text-align: center;
            font-size: 1.1rem;
            flex-shrink: 0;
        }

        .sidebar-nav .nav-item .nav-label {
            opacity: 1;
            transition: opacity var(--transition);
        }

        .sidebar-nav .nav-item:hover {
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
        }

        .sidebar-nav .nav-item.active {
            background: rgba(232, 122, 62, 0.15);
            color: var(--primary);
        }

        .sidebar-nav .nav-item.active::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 3px;
            height: 20px;
            background: var(--primary);
            border-radius: 0 3px 3px 0;
        }

        .sidebar-footer-links {
            padding: 16px 12px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            display: flex;
            justify-content: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .sidebar-footer-links a {
            color: rgba(255, 255, 255, 0.4);
            font-size: 1.1rem;
            transition: color var(--transition);
        }
        .sidebar-footer-links a:hover {
            color: var(--primary);
        }

        /* ===== 主体内容 ===== */
        .main-wrapper {
            margin-left: var(--sidebar-width);
            flex: 1;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            transition: margin-left var(--transition);
        }

        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 48px;
        }

        /* ===== 文章页 ===== */
        .article-page {
            flex: 1;
            padding: 40px 0 80px;
        }

        .article-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.9rem;
            color: var(--text-mid);
            margin-bottom: 24px;
            flex-wrap: wrap;
        }

        .article-breadcrumb a {
            color: var(--primary);
        }
        .article-breadcrumb a:hover {
            color: var(--primary-dark);
        }
        .article-breadcrumb .sep {
            color: var(--border);
        }
        .article-breadcrumb .current {
            color: var(--text-light);
            max-width: 300px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        .article-header {
            margin-bottom: 32px;
        }

        .article-header h1 {
            font-size: 2.2rem;
            font-weight: 700;
            line-height: 1.35;
            letter-spacing: 0.02em;
            color: var(--text-dark);
            margin-bottom: 16px;
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 16px 24px;
            align-items: center;
            color: var(--text-mid);
            font-size: 0.9rem;
        }

        .article-meta .meta-item {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .article-meta .meta-item i {
            font-size: 0.85rem;
            color: var(--primary);
        }

        .article-meta .badge {
            background: var(--primary-light);
            color: var(--primary);
            padding: 2px 12px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 500;
            border: 1px solid rgba(232, 122, 62, 0.2);
        }

        .article-cover {
            margin-bottom: 32px;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow);
        }

        .article-cover img {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
            border-radius: var(--radius-lg);
        }

        .article-body {
            max-width: var(--content-max);
            margin: 0 auto 48px;
            font-size: 1.05rem;
            line-height: 1.9;
            color: var(--text-dark);
        }

        .article-body h2 {
            font-size: 1.6rem;
            font-weight: 600;
            margin: 40px 0 16px;
            padding-bottom: 8px;
            border-bottom: 2px solid var(--border);
        }

        .article-body h3 {
            font-size: 1.25rem;
            font-weight: 600;
            margin: 32px 0 12px;
        }

        .article-body p {
            margin-bottom: 16px;
        }

        .article-body blockquote {
            border-left: 4px solid var(--primary);
            background: var(--primary-light);
            padding: 16px 20px;
            margin: 20px 0;
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            color: var(--text-mid);
            font-style: italic;
        }

        .article-body ul,
        .article-body ol {
            margin: 12px 0 20px;
            padding-left: 24px;
        }

        .article-body ul li {
            list-style: disc;
            margin-bottom: 6px;
        }

        .article-body ol li {
            list-style: decimal;
            margin-bottom: 6px;
        }

        .article-body img {
            border-radius: var(--radius-md);
            margin: 20px 0;
            box-shadow: var(--shadow);
        }

        .article-body code {
            background: #f0f0f0;
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 0.9em;
        }

        .article-body pre {
            background: var(--text-dark);
            color: #e0e0e0;
            padding: 20px;
            border-radius: var(--radius-md);
            overflow-x: auto;
            margin: 20px 0;
            font-size: 0.9rem;
        }

        .article-body pre code {
            background: transparent;
            padding: 0;
            color: inherit;
        }

        .article-nav {
            display: flex;
            justify-content: space-between;
            gap: 16px;
            margin-top: 48px;
            padding-top: 24px;
            border-top: 1px solid var(--border);
            flex-wrap: wrap;
        }

        .article-nav a {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 10px 20px;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            color: var(--text-mid);
            font-size: 0.9rem;
            transition: all var(--transition);
            max-width: 45%;
        }

        .article-nav a:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-light);
        }

        .article-nav .nav-prev i {
            margin-right: 4px;
        }
        .article-nav .nav-next i {
            margin-left: 4px;
        }

        /* ===== 相关推荐 ===== */
        .related-section {
            margin-top: 64px;
            padding-top: 40px;
            border-top: 1px solid var(--border);
        }

        .related-section h2 {
            font-size: 1.5rem;
            font-weight: 600;
            margin-bottom: 24px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .related-section h2 i {
            color: var(--primary);
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

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

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

        .related-card .card-img {
            aspect-ratio: 16/9;
            overflow: hidden;
        }

        .related-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
            transition: transform 0.4s ease;
        }

        .related-card:hover .card-img img {
            transform: scale(1.05);
        }

        .related-card .card-body {
            padding: 14px 16px 16px;
        }

        .related-card .card-body h3 {
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 6px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-card .card-body h3 a {
            color: var(--text-dark);
        }
        .related-card .card-body h3 a:hover {
            color: var(--primary);
        }

        .related-card .card-body .date {
            font-size: 0.8rem;
            color: var(--text-light);
        }

        /* ===== 无文章状态 ===== */
        .no-article {
            text-align: center;
            padding: 80px 20px;
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow);
            max-width: 500px;
            margin: 40px auto;
        }

        .no-article i {
            font-size: 3rem;
            color: var(--border);
            margin-bottom: 16px;
        }

        .no-article p {
            color: var(--text-mid);
            font-size: 1.1rem;
            margin-bottom: 20px;
        }

        .no-article .btn-home {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 28px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-md);
            font-weight: 500;
            transition: background var(--transition);
        }
        .no-article .btn-home:hover {
            background: var(--primary-dark);
            color: #fff;
        }

        /* ===== 页脚 ===== */
        .footer {
            background: var(--text-dark);
            color: rgba(255, 255, 255, 0.8);
            padding: 60px 0 0;
            margin-top: auto;
        }

        .footer .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 48px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-brand .logo-text {
            font-size: 1.5rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .footer-brand .logo-text span {
            color: var(--primary);
        }

        .footer-brand p {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.9rem;
            line-height: 1.7;
            margin-bottom: 16px;
        }

        .footer-social {
            display: flex;
            gap: 12px;
        }

        .footer-social a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            color: rgba(255, 255, 255, 0.5);
            font-size: 1rem;
            transition: all var(--transition);
        }

        .footer-social a:hover {
            background: var(--primary);
            color: #fff;
        }

        .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 16px;
        }

        .footer-col ul li {
            margin-bottom: 10px;
        }

        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.9rem;
            transition: color var(--transition);
        }

        .footer-col ul li a:hover {
            color: var(--primary);
        }

        .footer-bottom {
            text-align: center;
            padding: 20px 0;
            color: rgba(255, 255, 255, 0.3);
            font-size: 0.85rem;
            letter-spacing: 0.02em;
        }

        /* ===== 汉堡菜单（移动端） ===== */
        .mobile-header {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 60px;
            background: var(--text-dark);
            z-index: 999;
            padding: 0 20px;
            align-items: center;
            justify-content: space-between;
        }

        .mobile-header .logo-text {
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .mobile-header .logo-text span {
            color: var(--primary);
        }

        .hamburger {
            background: none;
            border: none;
            color: #fff;
            font-size: 1.5rem;
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: background var(--transition);
        }

        .hamburger:hover {
            background: rgba(255, 255, 255, 0.08);
        }

        .mobile-overlay {
            display: none;
            position: fixed;
            top: 60px;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(30, 42, 58, 0.97);
            z-index: 998;
            padding: 24px 20px;
            overflow-y: auto;
            backdrop-filter: blur(8px);
        }

        .mobile-overlay .nav-item {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 14px 16px;
            color: rgba(255, 255, 255, 0.7);
            font-size: 1.05rem;
            font-weight: 500;
            border-radius: var(--radius-md);
            transition: all var(--transition);
            text-decoration: none;
        }

        .mobile-overlay .nav-item i {
            width: 22px;
            text-align: center;
        }

        .mobile-overlay .nav-item:hover {
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
        }

        .mobile-overlay .nav-item.active {
            color: var(--primary);
            background: rgba(232, 122, 62, 0.12);
        }

        .mobile-overlay .nav-item.active::before {
            display: none;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1200px) {
            .related-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }

        @media (max-width: 1024px) {
            .sidebar {
                width: var(--sidebar-collapsed);
            }
            .sidebar .nav-label {
                opacity: 0;
                width: 0;
                overflow: hidden;
            }
            .sidebar .sidebar-brand .logo-text span:not(.logo-icon) {
                display: none;
            }
            .sidebar .sidebar-brand .logo-icon {
                margin-right: 0;
            }
            .sidebar .sidebar-brand {
                justify-content: center;
                padding: 20px 0;
            }
            .sidebar .sidebar-footer-links {
                flex-direction: column;
                align-items: center;
                gap: 8px;
            }
            .main-wrapper {
                margin-left: var(--sidebar-collapsed);
            }
            .container {
                padding: 0 32px;
            }
            .article-header h1 {
                font-size: 1.8rem;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 768px) {
            .sidebar {
                display: none;
            }

            .mobile-header {
                display: flex;
            }

            .main-wrapper {
                margin-left: 0;
                padding-top: 60px;
            }

            .container {
                padding: 0 20px;
            }

            .article-page {
                padding: 24px 0 60px;
            }

            .article-header h1 {
                font-size: 1.5rem;
            }

            .article-meta {
                gap: 10px 16px;
                font-size: 0.85rem;
            }
            .article-meta .badge {
                font-size: 0.75rem;
                padding: 1px 10px;
            }

            .article-body {
                font-size: 0.95rem;
            }

            .article-body h2 {
                font-size: 1.35rem;
            }
            .article-body h3 {
                font-size: 1.1rem;
            }

            .article-nav a {
                max-width: 100%;
                flex: 1;
                font-size: 0.85rem;
                padding: 8px 16px;
            }

            .related-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }

            .related-section h2 {
                font-size: 1.25rem;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .footer .container {
                padding: 0 20px;
            }

            .footer-bottom {
                font-size: 0.8rem;
                padding: 16px 0;
            }

            .article-breadcrumb .current {
                max-width: 160px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

            .article-header h1 {
                font-size: 1.3rem;
            }

            .related-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }

            .article-nav {
                flex-direction: column;
            }
            .article-nav a {
                max-width: 100%;
            }

            .article-meta .meta-item.hide-mobile {
                display: none;
            }

            .footer-grid {
                gap: 20px;
            }
            .footer-col h4 {
                font-size: 0.95rem;
            }
            .footer-col ul li a {
                font-size: 0.85rem;
            }
        }

        /* ===== 工具类 ===== */
        .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;
        }

/* roulang page: category1 */
:root {
  --primary: #E87A3E;
  --primary-dark: #D06A2E;
  --primary-light: #FFF5EE;
  --secondary: #4A8DB7;
  --accent: #D4A84B;
  --bg-warm: #FDF9F5;
  --bg-cream: #F5E6D3;
  --text-dark: #1E2A3A;
  --text-mid: #5A6A7A;
  --text-light: #8A9AA8;
  --border-light: #E5DDD5;
  --white: #FFFFFF;
  --shadow: 0 4px 20px rgba(232, 122, 62, 0.12);
  --shadow-hover: 0 8px 30px rgba(232, 122, 62, 0.2);
  --radius-lg: 16px;
  --radius-md: 8px;
  --radius-sm: 4px;
  --nav-width: 220px;
  --nav-width-icon: 72px;
  --transition: 0.3s ease;
  --font-stack: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: var(--font-stack); font-size: 1rem; line-height: 1.8; color: var(--text-dark); background: var(--bg-warm); -webkit-font-smoothing: antialiased; }
a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--primary-dark); }
img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-md); }
ul, ol { list-style: none; }
button, input, textarea { font-family: inherit; font-size: 1rem; outline: none; }
h1, h2, h3, h4, h5, h6 { font-weight: 600; line-height: 1.3; color: var(--text-dark); }
p { margin-bottom: 1rem; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 48px; }
@media (max-width: 768px) { .container { padding: 0 20px; } }

.sidebar-layout { display: flex; min-height: 100vh; }
.sidebar-nav { width: var(--nav-width); background: var(--text-dark); padding: 32px 16px; display: flex; flex-direction: column; position: fixed; top: 0; left: 0; height: 100vh; z-index: 100; transition: var(--transition); overflow-y: auto; }
.sidebar-nav .logo-text { font-size: 1.5rem; font-weight: 700; color: var(--white); margin-bottom: 40px; padding: 0 12px; display: flex; align-items: center; gap: 6px; }
.sidebar-nav .logo-text span { color: var(--primary); }
.sidebar-nav .nav-item { display: flex; align-items: center; gap: 12px; padding: 12px 16px; border-radius: var(--radius-md); color: rgba(255,255,255,0.6); font-size: 0.95rem; font-weight: 500; transition: var(--transition); position: relative; margin-bottom: 4px; }
.sidebar-nav .nav-item i { width: 20px; text-align: center; font-size: 1.1rem; }
.sidebar-nav .nav-item:hover { color: var(--white); background: rgba(255,255,255,0.08); }
.sidebar-nav .nav-item.active { color: var(--primary); background: rgba(232,122,62,0.12); }
.sidebar-nav .nav-item.active::before { content: ''; position: absolute; left: 0; top: 50%; transform: translateY(-50%); width: 3px; height: 24px; background: var(--primary); border-radius: 2px; }
.main-content { flex: 1; margin-left: var(--nav-width); min-width: 0; }

.mobile-header { display: none; background: var(--text-dark); padding: 12px 20px; position: fixed; top: 0; left: 0; right: 0; z-index: 99; align-items: center; justify-content: space-between; }
.mobile-header .logo-text { font-size: 1.3rem; font-weight: 700; color: var(--white); display: flex; align-items: center; gap: 4px; }
.mobile-header .logo-text span { color: var(--primary); }
.mobile-header .hamburger { background: none; border: none; color: var(--white); font-size: 1.5rem; cursor: pointer; padding: 4px 8px; }
.mobile-overlay { display: none; position: fixed; top: 56px; left: 0; right: 0; bottom: 0; background: rgba(30,42,58,0.96); backdrop-filter: blur(8px); z-index: 98; padding: 24px; flex-direction: column; gap: 8px; overflow-y: auto; }
.mobile-overlay .nav-item { color: rgba(255,255,255,0.6); padding: 14px 16px; border-radius: var(--radius-md); font-size: 1.05rem; display: flex; align-items: center; gap: 12px; }
.mobile-overlay .nav-item i { width: 22px; text-align: center; }
.mobile-overlay .nav-item.active { color: var(--primary); background: rgba(232,122,62,0.12); }
.mobile-overlay .nav-item:hover { color: var(--white); background: rgba(255,255,255,0.08); }
.mobile-overlay.show { display: flex; }

.hero { position: relative; padding: 120px 0 100px; background: linear-gradient(135deg, #E87A3E 0%, #4A8DB7 100%); overflow: hidden; }
.hero::before { content: ''; position: absolute; inset: 0; background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat; opacity: 0.18; }
.hero .container { position: relative; z-index: 1; }
.hero-badge { display: inline-flex; align-items: center; gap: 8px; background: rgba(255,255,255,0.2); backdrop-filter: blur(4px); padding: 6px 18px; border-radius: 20px; color: var(--white); font-size: 0.85rem; margin-bottom: 24px; letter-spacing: 0.3px; }
.hero-badge i { font-size: 0.75rem; }
.hero h1 { font-size: 3.2rem; font-weight: 700; color: var(--white); line-height: 1.2; margin-bottom: 20px; letter-spacing: 0.02em; max-width: 800px; }
.hero h1 span { color: #FFE4C4; }
.hero .subtitle { font-size: 1.2rem; color: rgba(255,255,255,0.9); line-height: 1.7; max-width: 640px; margin-bottom: 36px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 48px; }
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 14px 32px; border-radius: var(--radius-md); font-weight: 600; font-size: 1rem; cursor: pointer; transition: var(--transition); border: none; text-decoration: none; }
.btn-primary { background: var(--white); color: var(--primary); }
.btn-primary:hover { background: var(--primary-light); color: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,0.15); }
.btn-outline { background: transparent; color: var(--white); border: 2px solid rgba(255,255,255,0.6); }
.btn-outline:hover { background: rgba(255,255,255,0.12); border-color: var(--white); transform: translateY(-2px); }
.btn-secondary { background: var(--primary); color: var(--white); }
.btn-secondary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: var(--shadow-hover); }
.btn-ghost { background: transparent; color: var(--primary); border: 1px solid var(--primary); }
.btn-ghost:hover { background: var(--primary-light); }
.hero-stats { display: flex; gap: 40px; flex-wrap: wrap; }
.stat-item { display: flex; flex-direction: column; }
.stat-number { font-size: 2.2rem; font-weight: 700; color: var(--white); line-height: 1.1; }
.stat-label { font-size: 0.85rem; color: rgba(255,255,255,0.75); margin-top: 4px; }

.section { padding: 96px 0; }
.section-title { font-size: 2rem; font-weight: 700; text-align: center; margin-bottom: 16px; color: var(--text-dark); }
.section-subtitle { text-align: center; font-size: 1.1rem; color: var(--text-mid); max-width: 640px; margin: 0 auto 56px; line-height: 1.7; }

.advantages-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
.advantage-card { background: var(--white); border-radius: var(--radius-lg); padding: 36px 32px; box-shadow: var(--shadow); transition: var(--transition); border: 1px solid var(--border-light); }
.advantage-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); border-color: var(--primary); }
.advantage-icon { width: 56px; height: 56px; border-radius: var(--radius-md); background: var(--primary-light); display: flex; align-items: center; justify-content: center; margin-bottom: 20px; font-size: 1.6rem; color: var(--primary); }
.advantage-card h3 { font-size: 1.2rem; font-weight: 600; margin-bottom: 10px; }
.advantage-card p { font-size: 0.95rem; color: var(--text-mid); line-height: 1.7; margin-bottom: 0; }

.scenarios { background: var(--white); }
.scenarios-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
.scenario-card { display: flex; flex-direction: column; border-radius: var(--radius-lg); overflow: hidden; background: var(--bg-warm); border: 1px solid var(--border-light); transition: var(--transition); }
.scenario-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.scenario-img { width: 100%; height: 200px; object-fit: cover; border-radius: 0; }
.scenario-body { padding: 28px 24px; flex: 1; display: flex; flex-direction: column; }
.scenario-body h3 { font-size: 1.15rem; font-weight: 600; margin-bottom: 8px; }
.scenario-body p { font-size: 0.92rem; color: var(--text-mid); line-height: 1.7; margin-bottom: 0; flex: 1; }
.scenario-tag { display: inline-block; padding: 4px 12px; background: var(--primary-light); color: var(--primary); border-radius: 20px; font-size: 0.8rem; font-weight: 500; margin-bottom: 14px; align-self: flex-start; }

.badge-row { background: var(--text-dark); padding: 64px 0; }
.badge-grid { display: flex; justify-content: center; gap: 60px; flex-wrap: wrap; }
.badge-item { text-align: center; }
.badge-number { font-size: 3rem; font-weight: 700; color: var(--accent); line-height: 1.1; }
.badge-label { font-size: 0.95rem; color: rgba(255,255,255,0.6); margin-top: 6px; }
.badge-item i { font-size: 2rem; color: var(--primary); margin-bottom: 12px; display: block; }

.process { background: var(--bg-warm); }
.process-steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; position: relative; }
.process-step { text-align: center; padding: 32px 16px; background: var(--white); border-radius: var(--radius-lg); box-shadow: var(--shadow); transition: var(--transition); position: relative; }
.process-step:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.step-number { width: 48px; height: 48px; border-radius: 50%; background: var(--primary); color: var(--white); font-size: 1.2rem; font-weight: 700; display: flex; align-items: center; justify-content: center; margin: 0 auto 16px; }
.process-step h3 { font-size: 1.05rem; font-weight: 600; margin-bottom: 8px; }
.process-step p { font-size: 0.9rem; color: var(--text-mid); line-height: 1.6; margin-bottom: 0; }
.process-connector { display: none; }

.faq-section { background: var(--white); }
.faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq-item { border: 1px solid var(--border-light); border-radius: var(--radius-md); overflow: hidden; background: var(--bg-warm); transition: var(--transition); }
.faq-question { padding: 20px 24px; display: flex; align-items: center; justify-content: space-between; cursor: pointer; font-weight: 600; font-size: 1rem; color: var(--text-dark); background: none; border: none; width: 100%; text-align: left; gap: 16px; transition: var(--transition); }
.faq-question:hover { color: var(--primary); }
.faq-icon { font-size: 1.2rem; color: var(--primary); transition: var(--transition); flex-shrink: 0; }
.faq-item.open .faq-icon { transform: rotate(45deg); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.35s ease, padding 0.35s ease; padding: 0 24px; }
.faq-item.open .faq-answer { max-height: 300px; padding: 0 24px 20px; }
.faq-answer p { font-size: 0.95rem; color: var(--text-mid); line-height: 1.7; margin-bottom: 0; }

.cta-section { background: linear-gradient(135deg, #E87A3E 0%, #4A8DB7 100%); padding: 80px 0; text-align: center; position: relative; }
.cta-section::before { content: ''; position: absolute; inset: 0; background: url('/assets/images/backpic/back-3.webp') center/cover no-repeat; opacity: 0.08; }
.cta-section .container { position: relative; z-index: 1; }
.cta-section h2 { font-size: 2.2rem; font-weight: 700; color: var(--white); margin-bottom: 16px; }
.cta-section p { font-size: 1.1rem; color: rgba(255,255,255,0.85); max-width: 560px; margin: 0 auto 32px; }
.cta-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.cta-section .btn-primary { background: var(--white); color: var(--primary); }
.cta-section .btn-primary:hover { background: var(--primary-light); }
.cta-section .btn-outline-light { background: transparent; color: var(--white); border: 2px solid rgba(255,255,255,0.7); padding: 14px 32px; border-radius: var(--radius-md); font-weight: 600; cursor: pointer; transition: var(--transition); text-decoration: none; display: inline-flex; align-items: center; gap: 8px; }
.cta-section .btn-outline-light:hover { background: rgba(255,255,255,0.12); border-color: var(--white); }

.back-home-row { text-align: center; padding: 48px 0; }

.footer { background: var(--text-dark); color: rgba(255,255,255,0.7); padding: 64px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.8fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.footer-brand .logo-text { font-size: 1.5rem; font-weight: 700; color: var(--white); margin-bottom: 16px; display: flex; align-items: center; gap: 6px; }
.footer-brand .logo-text span { color: var(--primary); }
.footer-brand p { font-size: 0.9rem; line-height: 1.7; color: rgba(255,255,255,0.5); margin-bottom: 20px; }
.footer-social { display: flex; gap: 12px; }
.footer-social a { width: 40px; height: 40px; border-radius: 50%; background: rgba(255,255,255,0.06); display: flex; align-items: center; justify-content: center; color: rgba(255,255,255,0.5); font-size: 1.1rem; transition: var(--transition); }
.footer-social a:hover { background: var(--primary); color: var(--white); }
.footer-col h4 { font-size: 1rem; font-weight: 600; color: var(--white); margin-bottom: 20px; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { color: rgba(255,255,255,0.5); font-size: 0.9rem; transition: var(--transition); }
.footer-col ul li a:hover { color: var(--primary); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); padding: 24px 0; text-align: center; font-size: 0.85rem; color: rgba(255,255,255,0.3); }

@media (max-width: 1023px) {
  .sidebar-nav { width: var(--nav-width-icon); padding: 24px 8px; }
  .sidebar-nav .nav-label { display: none; }
  .sidebar-nav .logo-text { font-size: 1.2rem; padding: 0; justify-content: center; }
  .sidebar-nav .nav-item { justify-content: center; padding: 12px; }
  .sidebar-nav .nav-item i { font-size: 1.3rem; }
  .main-content { margin-left: var(--nav-width-icon); }
  .hero h1 { font-size: 2.6rem; }
  .section { padding: 72px 0; }
  .process-steps { grid-template-columns: 1fr 1fr; gap: 20px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 768px) {
  .sidebar-nav { display: none; }
  .mobile-header { display: flex; }
  .main-content { margin-left: 0; padding-top: 56px; }
  .hero { padding: 80px 0 60px; }
  .hero h1 { font-size: 2rem; }
  .hero .subtitle { font-size: 1rem; }
  .hero-actions { flex-direction: column; }
  .hero-stats { gap: 24px; }
  .stat-number { font-size: 1.8rem; }
  .section { padding: 56px 0; }
  .section-title { font-size: 1.6rem; }
  .section-subtitle { font-size: 1rem; margin-bottom: 40px; }
  .advantages-grid { grid-template-columns: 1fr; gap: 20px; }
  .scenarios-grid { grid-template-columns: 1fr; gap: 20px; }
  .badge-grid { gap: 32px; }
  .badge-number { font-size: 2.2rem; }
  .process-steps { grid-template-columns: 1fr; gap: 16px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .cta-section h2 { font-size: 1.6rem; }
  .cta-actions { flex-direction: column; align-items: center; }
  .faq-question { padding: 16px 18px; font-size: 0.95rem; }
  .faq-item.open .faq-answer { padding: 0 18px 16px; }
  .container { padding: 0 20px; }
}
@media (max-width: 520px) {
  .hero h1 { font-size: 1.6rem; }
  .hero .subtitle { font-size: 0.92rem; }
  .advantage-card { padding: 24px 20px; }
  .scenario-body { padding: 20px 16px; }
  .process-step { padding: 24px 12px; }
  .badge-item i { font-size: 1.5rem; }
  .badge-number { font-size: 1.8rem; }
}

/* roulang page: category2 */
/* ===== 设计变量 ===== */
    :root {
        --primary: #E87A3E;
        --primary-dark: #D06A2E;
        --primary-light: #FFF5EE;
        --secondary: #4A8DB7;
        --secondary-dark: #3A7A9E;
        --accent: #D4A84B;
        --bg-warm: #FDF9F5;
        --bg-cream: #F5E6D3;
        --text-dark: #1E2A3A;
        --text-mid: #5A6A7A;
        --text-light: #8A9AA8;
        --border-light: #E5DDD5;
        --white: #FFFFFF;
        --shadow: 0 4px 20px rgba(232, 122, 62, 0.12);
        --shadow-hover: 0 8px 30px rgba(232, 122, 62, 0.2);
        --radius-card: 16px;
        --radius-sm: 8px;
        --radius-xs: 4px;
        --transition: 0.3s ease;
        --font-stack: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
        --container-width: 1200px;
        --sidebar-width: 220px;
        --sidebar-collapsed: 72px;
    }

    /* ===== Reset & Base ===== */
    *,
    *::before,
    *::after {
        box-sizing: border-box;
        margin: 0;
        padding: 0;
    }
    html {
        scroll-behavior: smooth;
        font-size: 16px;
    }
    body {
        font-family: var(--font-stack);
        background: var(--bg-warm);
        color: var(--text-dark);
        line-height: 1.8;
        -webkit-font-smoothing: antialiased;
        display: flex;
        min-height: 100vh;
    }
    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);
    }
    ul,
    ol {
        list-style: none;
    }
    button,
    input,
    textarea {
        font-family: var(--font-stack);
        outline: none;
        border: none;
    }
    button {
        cursor: pointer;
        background: none;
    }
    h1,
    h2,
    h3,
    h4,
    h5,
    h6 {
        line-height: 1.3;
        color: var(--text-dark);
    }

    /* ===== 布局容器 ===== */
    .wrapper {
        display: flex;
        width: 100%;
        min-height: 100vh;
    }

    /* ===== 侧边导航 ===== */
    .sidebar {
        position: fixed;
        top: 0;
        left: 0;
        width: var(--sidebar-width);
        height: 100vh;
        background: var(--text-dark);
        color: var(--white);
        display: flex;
        flex-direction: column;
        z-index: 1000;
        transition: width var(--transition);
        overflow-y: auto;
        overflow-x: hidden;
        border-right: 1px solid rgba(255, 255, 255, 0.06);
    }
    .sidebar-brand {
        padding: 24px 20px 16px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        display: flex;
        align-items: center;
        gap: 10px;
    }
    .sidebar-brand .logo-icon {
        width: 36px;
        height: 36px;
        background: linear-gradient(135deg, var(--primary), var(--secondary));
        border-radius: var(--radius-sm);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 1.2rem;
        font-weight: 700;
        color: var(--white);
        flex-shrink: 0;
    }
    .sidebar-brand .logo-text {
        font-size: 1.25rem;
        font-weight: 700;
        letter-spacing: 0.02em;
        white-space: nowrap;
    }
    .sidebar-brand .logo-text span {
        color: var(--primary);
    }
    .sidebar-nav {
        flex: 1;
        padding: 16px 0;
        display: flex;
        flex-direction: column;
        gap: 2px;
    }
    .sidebar-nav .nav-item {
        display: flex;
        align-items: center;
        gap: 14px;
        padding: 12px 20px;
        color: rgba(255, 255, 255, 0.65);
        font-size: 0.95rem;
        font-weight: 500;
        transition: all var(--transition);
        border-left: 3px solid transparent;
        white-space: nowrap;
    }
    .sidebar-nav .nav-item i {
        width: 20px;
        text-align: center;
        font-size: 1.1rem;
        flex-shrink: 0;
    }
    .sidebar-nav .nav-item .nav-label {
        flex: 1;
    }
    .sidebar-nav .nav-item:hover {
        color: var(--white);
        background: rgba(255, 255, 255, 0.05);
        border-left-color: var(--primary);
    }
    .sidebar-nav .nav-item.active {
        color: var(--white);
        background: rgba(232, 122, 62, 0.15);
        border-left-color: var(--primary);
        font-weight: 600;
    }
    .sidebar-nav .nav-item.active i {
        color: var(--primary);
    }
    .sidebar-footer {
        padding: 16px 20px;
        border-top: 1px solid rgba(255, 255, 255, 0.08);
        display: flex;
        gap: 12px;
        justify-content: center;
    }
    .sidebar-footer a {
        color: rgba(255, 255, 255, 0.4);
        font-size: 1.1rem;
        transition: color var(--transition);
    }
    .sidebar-footer a:hover {
        color: var(--primary);
    }

    /* ===== 主内容区 ===== */
    .main-content {
        margin-left: var(--sidebar-width);
        flex: 1;
        min-height: 100vh;
        display: flex;
        flex-direction: column;
    }

    /* ===== 通用容器 ===== */
    .container {
        max-width: var(--container-width);
        margin: 0 auto;
        padding: 0 48px;
    }
    @media (max-width: 768px) {
        .container {
            padding: 0 20px;
        }
    }

    /* ===== 下拉汉堡菜单（移动端） ===== */
    .mobile-header {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        height: 60px;
        background: var(--text-dark);
        z-index: 1100;
        padding: 0 20px;
        align-items: center;
        justify-content: space-between;
        box-shadow: 0 2px 12px rgba(0, 0, 0, 0.15);
    }
    .mobile-header .logo-text {
        color: var(--white);
        font-size: 1.2rem;
        font-weight: 700;
    }
    .mobile-header .logo-text span {
        color: var(--primary);
    }
    .mobile-header .hamburger {
        color: var(--white);
        font-size: 1.6rem;
        padding: 4px 8px;
        border-radius: var(--radius-xs);
        transition: background var(--transition);
    }
    .mobile-header .hamburger:hover {
        background: rgba(255, 255, 255, 0.1);
    }
    .mobile-nav-overlay {
        display: none;
        position: fixed;
        top: 60px;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(30, 42, 58, 0.97);
        z-index: 1090;
        padding: 20px;
        overflow-y: auto;
        backdrop-filter: blur(8px);
    }
    .mobile-nav-overlay.open {
        display: block;
    }
    .mobile-nav-overlay .nav-item {
        display: block;
        color: rgba(255, 255, 255, 0.7);
        padding: 14px 16px;
        font-size: 1.05rem;
        border-left: 3px solid transparent;
        transition: all var(--transition);
        border-radius: var(--radius-xs);
        margin-bottom: 4px;
    }
    .mobile-nav-overlay .nav-item i {
        margin-right: 12px;
        width: 20px;
        text-align: center;
    }
    .mobile-nav-overlay .nav-item:hover,
    .mobile-nav-overlay .nav-item.active {
        color: var(--white);
        background: rgba(232, 122, 62, 0.2);
        border-left-color: var(--primary);
    }

    /* ===== Hero ===== */
    .hero-solution {
        position: relative;
        padding: 100px 0 80px;
        background: linear-gradient(135deg, #1E2A3A 0%, #2A3A4A 40%, #3A4A5A 100%);
        color: var(--white);
        overflow: hidden;
        min-height: 60vh;
        display: flex;
        align-items: center;
    }
    .hero-solution::before {
        content: '';
        position: absolute;
        inset: 0;
        background: url('/assets/images/backpic/back-2.png') no-repeat center center / cover;
        opacity: 0.15;
        mix-blend-mode: overlay;
    }
    .hero-solution::after {
        content: '';
        position: absolute;
        top: -30%;
        right: -10%;
        width: 600px;
        height: 600px;
        background: radial-gradient(circle, rgba(232, 122, 62, 0.15), transparent 70%);
        border-radius: 50%;
        pointer-events: none;
    }
    .hero-solution .container {
        position: relative;
        z-index: 2;
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 60px;
        align-items: center;
    }
    .hero-solution .hero-text h1 {
        font-size: 2.8rem;
        font-weight: 700;
        color: var(--white);
        letter-spacing: 0.02em;
        line-height: 1.2;
        margin-bottom: 20px;
    }
    .hero-solution .hero-text h1 .highlight {
        background: linear-gradient(135deg, var(--primary), var(--accent));
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
    }
    .hero-solution .hero-text .sub {
        font-size: 1.15rem;
        color: rgba(255, 255, 255, 0.8);
        line-height: 1.8;
        margin-bottom: 32px;
        max-width: 540px;
    }
    .hero-solution .hero-badges {
        display: flex;
        gap: 24px;
        flex-wrap: wrap;
        margin-bottom: 32px;
    }
    .hero-solution .hero-badges .badge-item {
        background: rgba(255, 255, 255, 0.08);
        backdrop-filter: blur(4px);
        border: 1px solid rgba(255, 255, 255, 0.12);
        border-radius: var(--radius-sm);
        padding: 12px 20px;
        text-align: center;
        min-width: 100px;
    }
    .hero-solution .hero-badges .badge-item .num {
        font-size: 1.6rem;
        font-weight: 700;
        color: var(--accent);
        line-height: 1.2;
    }
    .hero-solution .hero-badges .badge-item .label {
        font-size: 0.8rem;
        color: rgba(255, 255, 255, 0.65);
        margin-top: 2px;
    }
    .hero-solution .btn-group {
        display: flex;
        gap: 16px;
        flex-wrap: wrap;
    }
    .hero-solution .hero-image {
        display: flex;
        justify-content: center;
        align-items: center;
    }
    .hero-solution .hero-image img {
        width: 100%;
        max-width: 480px;
        border-radius: var(--radius-card);
        box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
        border: 1px solid rgba(255, 255, 255, 0.08);
        transform: perspective(800px) rotateY(-4deg);
        transition: transform var(--transition);
    }
    .hero-solution .hero-image img:hover {
        transform: perspective(800px) rotateY(0deg);
    }

    /* ===== 按钮 ===== */
    .btn {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        padding: 12px 28px;
        border-radius: var(--radius-sm);
        font-size: 1rem;
        font-weight: 600;
        transition: all var(--transition);
        white-space: nowrap;
        border: 2px solid transparent;
    }
    .btn-primary {
        background: var(--primary);
        color: var(--white);
        border-color: var(--primary);
    }
    .btn-primary:hover {
        background: var(--primary-dark);
        border-color: var(--primary-dark);
        color: var(--white);
        transform: translateY(-2px);
        box-shadow: var(--shadow-hover);
    }
    .btn-primary:focus-visible {
        outline: 3px solid rgba(232, 122, 62, 0.4);
        outline-offset: 2px;
    }
    .btn-secondary {
        background: transparent;
        color: var(--white);
        border-color: rgba(255, 255, 255, 0.4);
    }
    .btn-secondary:hover {
        background: rgba(255, 255, 255, 0.1);
        border-color: var(--white);
        color: var(--white);
        transform: translateY(-2px);
    }
    .btn-outline {
        background: transparent;
        color: var(--primary);
        border-color: var(--primary);
    }
    .btn-outline:hover {
        background: var(--primary);
        color: var(--white);
        transform: translateY(-2px);
        box-shadow: var(--shadow-hover);
    }
    .btn-accent {
        background: var(--accent);
        color: var(--white);
        border-color: var(--accent);
    }
    .btn-accent:hover {
        background: #C49A3A;
        border-color: #C49A3A;
        color: var(--white);
        transform: translateY(-2px);
        box-shadow: var(--shadow-hover);
    }

    /* ===== 通用板块标题 ===== */
    .section-title {
        text-align: center;
        margin-bottom: 56px;
    }
    .section-title h2 {
        font-size: 2rem;
        font-weight: 700;
        color: var(--text-dark);
        letter-spacing: 0.01em;
        margin-bottom: 12px;
    }
    .section-title h2 .hl {
        color: var(--primary);
    }
    .section-title p {
        font-size: 1.05rem;
        color: var(--text-mid);
        max-width: 640px;
        margin: 0 auto;
        line-height: 1.7;
    }
    .section-title .divider {
        width: 60px;
        height: 3px;
        background: linear-gradient(135deg, var(--primary), var(--secondary));
        border-radius: 2px;
        margin: 16px auto 0;
    }

    /* ===== 板块间距 ===== */
    .section {
        padding: 80px 0;
    }
    .section-alt {
        background: var(--white);
    }
    .section-cream {
        background: var(--bg-cream);
    }
    .section-dark {
        background: var(--text-dark);
        color: var(--white);
    }
    .section-dark .section-title h2 {
        color: var(--white);
    }
    .section-dark .section-title p {
        color: rgba(255, 255, 255, 0.7);
    }

    /* ===== 核心服务卡片 ===== */
    .services-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 28px;
    }
    .service-card {
        background: var(--white);
        border-radius: var(--radius-card);
        padding: 32px 24px 28px;
        box-shadow: var(--shadow);
        border: 1px solid var(--border-light);
        transition: all var(--transition);
        position: relative;
        overflow: hidden;
    }
    .service-card::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        height: 4px;
        background: linear-gradient(135deg, var(--primary), var(--secondary));
        opacity: 0;
        transition: opacity var(--transition);
    }
    .service-card:hover {
        transform: translateY(-6px);
        box-shadow: var(--shadow-hover);
        border-color: transparent;
    }
    .service-card:hover::before {
        opacity: 1;
    }
    .service-card .icon {
        width: 56px;
        height: 56px;
        border-radius: var(--radius-sm);
        background: linear-gradient(135deg, var(--primary-light), var(--white));
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 1.5rem;
        color: var(--primary);
        margin-bottom: 18px;
        border: 1px solid rgba(232, 122, 62, 0.15);
    }
    .service-card h3 {
        font-size: 1.2rem;
        font-weight: 600;
        margin-bottom: 10px;
    }
    .service-card p {
        font-size: 0.95rem;
        color: var(--text-mid);
        line-height: 1.7;
        margin-bottom: 16px;
    }
    .service-card .tag-group {
        display: flex;
        flex-wrap: wrap;
        gap: 6px;
    }
    .service-card .tag {
        font-size: 0.75rem;
        padding: 2px 12px;
        border-radius: 20px;
        background: var(--bg-cream);
        color: var(--text-mid);
        font-weight: 500;
        border: 1px solid var(--border-light);
    }
    .service-card .tag.highlight {
        background: rgba(232, 122, 62, 0.1);
        color: var(--primary);
        border-color: rgba(232, 122, 62, 0.2);
    }

    /* ===== 适用场景 ===== */
    .scenes-grid {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 30px;
    }
    .scene-item {
        display: flex;
        gap: 20px;
        background: var(--white);
        border-radius: var(--radius-card);
        padding: 28px 24px;
        box-shadow: var(--shadow);
        border: 1px solid var(--border-light);
        transition: all var(--transition);
    }
    .scene-item:hover {
        transform: translateY(-4px);
        box-shadow: var(--shadow-hover);
    }
    .scene-item .scene-icon {
        flex-shrink: 0;
        width: 48px;
        height: 48px;
        border-radius: var(--radius-sm);
        background: linear-gradient(135deg, var(--primary-light), var(--bg-cream));
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 1.3rem;
        color: var(--primary);
    }
    .scene-item .scene-content h4 {
        font-size: 1.1rem;
        font-weight: 600;
        margin-bottom: 6px;
    }
    .scene-item .scene-content p {
        font-size: 0.9rem;
        color: var(--text-mid);
        line-height: 1.6;
    }

    /* ===== 实施流程 ===== */
    .steps-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 24px;
        counter-reset: step;
    }
    .step-card {
        background: var(--white);
        border-radius: var(--radius-card);
        padding: 28px 20px 24px;
        text-align: center;
        box-shadow: var(--shadow);
        border: 1px solid var(--border-light);
        position: relative;
        transition: all var(--transition);
        counter-increment: step;
    }
    .step-card:hover {
        transform: translateY(-4px);
        box-shadow: var(--shadow-hover);
    }
    .step-card .step-num {
        width: 44px;
        height: 44px;
        border-radius: 50%;
        background: linear-gradient(135deg, var(--primary), var(--secondary));
        color: var(--white);
        font-size: 1.2rem;
        font-weight: 700;
        display: flex;
        align-items: center;
        justify-content: center;
        margin: 0 auto 16px;
    }
    .step-card h4 {
        font-size: 1.05rem;
        font-weight: 600;
        margin-bottom: 8px;
    }
    .step-card p {
        font-size: 0.88rem;
        color: var(--text-mid);
        line-height: 1.6;
    }

    /* ===== 数据成果 ===== */
    .stats-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 24px;
        text-align: center;
    }
    .stat-item {
        background: rgba(255, 255, 255, 0.06);
        border-radius: var(--radius-card);
        padding: 36px 20px;
        border: 1px solid rgba(255, 255, 255, 0.08);
        backdrop-filter: blur(4px);
        transition: all var(--transition);
    }
    .stat-item:hover {
        background: rgba(255, 255, 255, 0.1);
        transform: translateY(-4px);
    }
    .stat-item .stat-num {
        font-size: 2.4rem;
        font-weight: 700;
        color: var(--accent);
        line-height: 1.2;
        margin-bottom: 6px;
    }
    .stat-item .stat-label {
        font-size: 0.95rem;
        color: rgba(255, 255, 255, 0.75);
        font-weight: 500;
    }

    /* ===== FAQ ===== */
    .faq-list {
        max-width: 800px;
        margin: 0 auto;
        display: flex;
        flex-direction: column;
        gap: 12px;
    }
    .faq-item {
        background: var(--white);
        border-radius: var(--radius-sm);
        border: 1px solid var(--border-light);
        overflow: hidden;
        transition: all var(--transition);
    }
    .faq-item:hover {
        border-color: rgba(232, 122, 62, 0.2);
    }
    .faq-item .faq-question {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 18px 24px;
        font-size: 1rem;
        font-weight: 600;
        color: var(--text-dark);
        cursor: pointer;
        transition: background var(--transition);
        gap: 12px;
    }
    .faq-item .faq-question:hover {
        background: var(--primary-light);
    }
    .faq-item .faq-question .faq-toggle {
        font-size: 1.2rem;
        color: var(--primary);
        flex-shrink: 0;
        transition: transform var(--transition);
    }
    .faq-item.active .faq-question .faq-toggle {
        transform: rotate(45deg);
    }
    .faq-item .faq-answer {
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.35s ease, padding 0.35s ease;
        padding: 0 24px;
        font-size: 0.95rem;
        color: var(--text-mid);
        line-height: 1.7;
    }
    .faq-item.active .faq-answer {
        max-height: 400px;
        padding: 0 24px 20px;
    }

    /* ===== CTA ===== */
    .cta-section {
        background: linear-gradient(135deg, #1E2A3A 0%, #2A3A4A 50%, #3A4A5A 100%);
        padding: 80px 0;
        text-align: center;
        position: relative;
        overflow: hidden;
    }
    .cta-section::before {
        content: '';
        position: absolute;
        top: -50%;
        left: -20%;
        width: 600px;
        height: 600px;
        background: radial-gradient(circle, rgba(232, 122, 62, 0.1), transparent 70%);
        border-radius: 50%;
        pointer-events: none;
    }
    .cta-section .container {
        position: relative;
        z-index: 2;
    }
    .cta-section h2 {
        font-size: 2rem;
        font-weight: 700;
        color: var(--white);
        margin-bottom: 16px;
    }
    .cta-section p {
        font-size: 1.1rem;
        color: rgba(255, 255, 255, 0.8);
        max-width: 560px;
        margin: 0 auto 32px;
        line-height: 1.7;
    }
    .cta-section .btn-group {
        display: flex;
        gap: 16px;
        justify-content: center;
        flex-wrap: wrap;
    }

    /* ===== 面包屑 ===== */
    .breadcrumb-bar {
        background: var(--white);
        border-bottom: 1px solid var(--border-light);
        padding: 12px 0;
    }
    .breadcrumb-bar .breadcrumb {
        display: flex;
        align-items: center;
        gap: 8px;
        font-size: 0.88rem;
        color: var(--text-mid);
    }
    .breadcrumb-bar .breadcrumb a {
        color: var(--text-mid);
        transition: color var(--transition);
    }
    .breadcrumb-bar .breadcrumb a:hover {
        color: var(--primary);
    }
    .breadcrumb-bar .breadcrumb .sep {
        color: var(--border-light);
    }
    .breadcrumb-bar .breadcrumb .current {
        color: var(--primary);
        font-weight: 500;
    }

    /* ===== 页脚 ===== */
    .footer {
        background: var(--text-dark);
        color: rgba(255, 255, 255, 0.7);
        padding: 60px 0 0;
        margin-top: auto;
    }
    .footer .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, 0.06);
    }
    .footer .footer-brand .logo-text {
        font-size: 1.3rem;
        font-weight: 700;
        color: var(--white);
        margin-bottom: 16px;
    }
    .footer .footer-brand .logo-text span {
        color: var(--primary);
    }
    .footer .footer-brand p {
        font-size: 0.9rem;
        line-height: 1.7;
        color: rgba(255, 255, 255, 0.55);
        margin-bottom: 20px;
        max-width: 320px;
    }
    .footer .footer-social {
        display: flex;
        gap: 12px;
    }
    .footer .footer-social a {
        width: 38px;
        height: 38px;
        border-radius: 50%;
        background: rgba(255, 255, 255, 0.06);
        display: flex;
        align-items: center;
        justify-content: center;
        color: rgba(255, 255, 255, 0.5);
        font-size: 1rem;
        transition: all var(--transition);
        border: 1px solid rgba(255, 255, 255, 0.06);
    }
    .footer .footer-social a:hover {
        background: var(--primary);
        color: var(--white);
        border-color: var(--primary);
        transform: translateY(-2px);
    }
    .footer .footer-col h4 {
        font-size: 1rem;
        font-weight: 600;
        color: var(--white);
        margin-bottom: 16px;
        letter-spacing: 0.02em;
    }
    .footer .footer-col ul li {
        margin-bottom: 8px;
    }
    .footer .footer-col ul li a {
        color: rgba(255, 255, 255, 0.5);
        font-size: 0.9rem;
        transition: color var(--transition);
    }
    .footer .footer-col ul li a:hover {
        color: var(--primary);
    }
    .footer .footer-bottom {
        text-align: center;
        padding: 20px 0;
        font-size: 0.85rem;
        color: rgba(255, 255, 255, 0.3);
    }

    /* ===== 段落与通用 ===== */
    .text-center {
        text-align: center;
    }
    .mt-16 {
        margin-top: 16px;
    }
    .mt-32 {
        margin-top: 32px;
    }
    .mb-16 {
        margin-bottom: 16px;
    }

    /* ===== 响应式 ===== */
    @media (max-width: 1024px) {
        .sidebar {
            width: var(--sidebar-collapsed);
        }
        .sidebar .sidebar-brand .logo-text,
        .sidebar .nav-item .nav-label,
        .sidebar .sidebar-footer a span {
            display: none;
        }
        .sidebar .sidebar-brand {
            justify-content: center;
            padding: 16px 8px;
        }
        .sidebar .nav-item {
            justify-content: center;
            padding: 14px 8px;
            border-left: none;
            border-bottom: 2px solid transparent;
        }
        .sidebar .nav-item.active {
            border-left: none;
            border-bottom-color: var(--primary);
        }
        .main-content {
            margin-left: var(--sidebar-collapsed);
        }
        .hero-solution .container {
            grid-template-columns: 1fr;
            gap: 40px;
        }
        .hero-solution .hero-text h1 {
            font-size: 2.2rem;
        }
        .hero-solution .hero-image img {
            max-width: 100%;
            transform: none;
        }
        .services-grid {
            grid-template-columns: repeat(2, 1fr);
        }
        .scenes-grid {
            grid-template-columns: 1fr;
        }
        .steps-grid {
            grid-template-columns: repeat(2, 1fr);
        }
        .stats-grid {
            grid-template-columns: repeat(2, 1fr);
        }
        .footer .footer-grid {
            grid-template-columns: 1fr 1fr;
        }
    }

    @media (max-width: 768px) {
        .sidebar {
            display: none;
        }
        .mobile-header {
            display: flex;
        }
        .main-content {
            margin-left: 0;
            padding-top: 60px;
        }
        .container {
            padding: 0 20px;
        }
        .hero-solution {
            padding: 60px 0 50px;
            min-height: auto;
        }
        .hero-solution .hero-text h1 {
            font-size: 1.8rem;
        }
        .hero-solution .hero-text .sub {
            font-size: 1rem;
        }
        .hero-solution .hero-badges {
            gap: 12px;
        }
        .hero-solution .hero-badges .badge-item {
            padding: 8px 14px;
            min-width: 80px;
        }
        .hero-solution .hero-badges .badge-item .num {
            font-size: 1.3rem;
        }
        .section {
            padding: 48px 0;
        }
        .section-title {
            margin-bottom: 36px;
        }
        .section-title h2 {
            font-size: 1.5rem;
        }
        .services-grid {
            grid-template-columns: 1fr;
            gap: 20px;
        }
        .steps-grid {
            grid-template-columns: 1fr;
            gap: 16px;
        }
        .stats-grid {
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }
        .stat-item {
            padding: 24px 12px;
        }
        .stat-item .stat-num {
            font-size: 1.8rem;
        }
        .scene-item {
            flex-direction: column;
            gap: 12px;
            padding: 20px 16px;
        }
        .footer .footer-grid {
            grid-template-columns: 1fr;
            gap: 28px;
        }
        .footer .footer-brand p {
            max-width: 100%;
        }
        .cta-section h2 {
            font-size: 1.5rem;
        }
        .cta-section p {
            font-size: 0.95rem;
        }
        .faq-item .faq-question {
            padding: 14px 16px;
            font-size: 0.95rem;
        }
        .faq-item .faq-answer {
            padding: 0 16px;
            font-size: 0.9rem;
        }
        .faq-item.active .faq-answer {
            padding: 0 16px 16px;
        }
        .btn {
            padding: 10px 20px;
            font-size: 0.95rem;
        }
    }

    @media (max-width: 520px) {
        .hero-solution .hero-text h1 {
            font-size: 1.5rem;
        }
        .hero-solution .hero-badges {
            flex-direction: column;
            align-items: flex-start;
        }
        .hero-solution .btn-group {
            flex-direction: column;
            width: 100%;
        }
        .hero-solution .btn-group .btn {
            width: 100%;
            justify-content: center;
        }
        .stats-grid {
            grid-template-columns: 1fr 1fr;
            gap: 12px;
        }
        .stat-item .stat-num {
            font-size: 1.5rem;
        }
        .section-title h2 {
            font-size: 1.3rem;
        }
        .service-card {
            padding: 24px 16px 20px;
        }
        .step-card {
            padding: 20px 16px;
        }
    }

    /* ===== 辅助工具 ===== */
    .sr-only {
        position: absolute;
        width: 1px;
        height: 1px;
        padding: 0;
        margin: -1px;
        overflow: hidden;
        clip: rect(0, 0, 0, 0);
        border: 0;
    }

/* roulang page: category3 */
/* ===== Design Variables ===== */
        :root {
            --primary: #E87A3E;
            --primary-dark: #D06A2E;
            --primary-light: #FFF5EE;
            --secondary: #4A8DB7;
            --secondary-dark: #3A7A9E;
            --accent: #D4A84B;
            --bg-warm: #FDF9F5;
            --bg-cream: #F5E6D3;
            --text-dark: #1E2A3A;
            --text-mid: #5A6A7A;
            --text-light: #8A9AA8;
            --border-light: #E5DDD5;
            --white: #FFFFFF;
            --shadow-sm: 0 2px 8px rgba(232, 122, 62, 0.08);
            --shadow-md: 0 4px 20px rgba(232, 122, 62, 0.12);
            --shadow-lg: 0 8px 30px rgba(232, 122, 62, 0.2);
            --radius-sm: 4px;
            --radius-md: 8px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --nav-width: 220px;
            --nav-collapsed: 72px;
            --max-width: 1200px;
            --gap: 24px;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-stack: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --gradient-brand: linear-gradient(135deg, #E87A3E 0%, #4A8DB7 100%);
            --gradient-hero: linear-gradient(135deg, rgba(232, 122, 62, 0.92) 0%, rgba(74, 141, 183, 0.88) 100%);
        }

        /* ===== 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-stack);
            background: var(--bg-warm);
            color: var(--text-dark);
            line-height: 1.8;
            font-size: 1rem;
            font-weight: 400;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        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-md);
        }

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

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 600;
            line-height: 1.3;
            color: var(--text-dark);
        }

        /* ===== Layout Container ===== */
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 48px;
            width: 100%;
        }

        @media (max-width: 1023px) {
            .container {
                padding: 0 32px;
            }
        }
        @media (max-width: 767px) {
            .container {
                padding: 0 20px;
            }
        }

        /* ===== Sidebar Navigation ===== */
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--nav-width);
            height: 100vh;
            background: var(--text-dark);
            z-index: 1000;
            display: flex;
            flex-direction: column;
            transition: width var(--transition);
            overflow: hidden;
            box-shadow: 2px 0 20px rgba(0, 0, 0, 0.15);
        }

        .sidebar-brand {
            display: flex;
            align-items: center;
            padding: 24px 20px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            flex-shrink: 0;
        }

        .sidebar-brand .logo-text {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--white);
            letter-spacing: 0.02em;
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .sidebar-brand .logo-text span {
            color: var(--primary);
        }

        .sidebar-nav {
            flex: 1;
            display: flex;
            flex-direction: column;
            padding: 16px 12px;
            gap: 4px;
            overflow-y: auto;
        }

        .nav-item {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 12px 16px;
            border-radius: var(--radius-md);
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.95rem;
            font-weight: 500;
            transition: all var(--transition);
            text-decoration: none;
            position: relative;
            white-space: nowrap;
        }

        .nav-item i {
            font-size: 1.1rem;
            width: 22px;
            text-align: center;
            flex-shrink: 0;
        }

        .nav-item .nav-label {
            opacity: 1;
            transition: opacity var(--transition);
        }

        .nav-item:hover {
            color: var(--white);
            background: rgba(255, 255, 255, 0.08);
        }

        .nav-item.active {
            color: var(--primary);
            background: rgba(232, 122, 62, 0.15);
        }

        .nav-item.active::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 3px;
            height: 24px;
            background: var(--primary);
            border-radius: 0 3px 3px 0;
        }

        .sidebar-footer-nav {
            padding: 16px 12px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            display: flex;
            gap: 12px;
            justify-content: center;
            flex-shrink: 0;
        }

        .sidebar-footer-nav a {
            color: rgba(255, 255, 255, 0.4);
            font-size: 1.1rem;
            transition: color var(--transition);
        }
        .sidebar-footer-nav a:hover {
            color: var(--primary);
        }

        /* Main content shift */
        .main-wrapper {
            margin-left: var(--nav-width);
            flex: 1;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }

        /* ===== Mobile Header ===== */
        .mobile-header {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 60px;
            background: var(--text-dark);
            z-index: 999;
            align-items: center;
            justify-content: space-between;
            padding: 0 20px;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.15);
        }

        .mobile-header .logo-text {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--white);
        }

        .mobile-header .logo-text span {
            color: var(--primary);
        }

        .hamburger {
            background: none;
            border: none;
            color: var(--white);
            font-size: 1.5rem;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: var(--radius-sm);
        }

        .mobile-menu-overlay {
            display: none;
            position: fixed;
            top: 60px;
            left: 0;
            width: 100%;
            background: rgba(30, 42, 58, 0.97);
            backdrop-filter: blur(12px);
            z-index: 998;
            padding: 16px 20px 24px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .mobile-menu-overlay.open {
            display: block;
        }

        .mobile-menu-overlay .nav-item {
            padding: 12px 16px;
            color: rgba(255, 255, 255, 0.7);
        }
        .mobile-menu-overlay .nav-item.active {
            color: var(--primary);
            background: rgba(232, 122, 62, 0.15);
        }

        /* ===== Hero Banner ===== */
        .page-hero {
            position: relative;
            min-height: 320px;
            display: flex;
            align-items: center;
            background: var(--gradient-hero);
            overflow: hidden;
            padding: 80px 0 60px;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.webp') center center/cover no-repeat;
            opacity: 0.2;
            mix-blend-mode: overlay;
        }

        .page-hero .container {
            position: relative;
            z-index: 2;
        }

        .page-hero h1 {
            font-size: 2.8rem;
            font-weight: 700;
            color: var(--white);
            letter-spacing: 0.02em;
            margin-bottom: 16px;
            text-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
        }

        .page-hero .hero-sub {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.9);
            max-width: 640px;
            line-height: 1.7;
        }

        .page-hero .hero-badge-group {
            display: flex;
            gap: 20px;
            margin-top: 28px;
            flex-wrap: wrap;
        }

        .hero-badge {
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(4px);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: var(--radius-md);
            padding: 12px 24px;
            display: flex;
            align-items: center;
            gap: 12px;
            color: var(--white);
        }

        .hero-badge .badge-num {
            font-size: 1.6rem;
            font-weight: 700;
            line-height: 1;
        }

        .hero-badge .badge-label {
            font-size: 0.85rem;
            opacity: 0.85;
        }

        /* ===== Section Spacing ===== */
        .section {
            padding: 80px 0;
        }

        .section-title {
            font-size: 1.75rem;
            font-weight: 600;
            text-align: center;
            margin-bottom: 12px;
            color: var(--text-dark);
        }

        .section-desc {
            text-align: center;
            color: var(--text-mid);
            max-width: 680px;
            margin: 0 auto 48px;
            font-size: 1.05rem;
        }

        /* ===== Industry Grid ===== */
        .industry-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--gap);
        }

        .industry-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            border: 1px solid var(--border-light);
            display: flex;
            flex-direction: column;
        }

        .industry-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: var(--primary);
        }

        .industry-card .card-img {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
            border-radius: 0;
        }

        .industry-card .card-body {
            padding: 24px 20px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .industry-card .card-tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 0.8rem;
            font-weight: 500;
            padding: 4px 12px;
            border-radius: var(--radius-sm);
            margin-bottom: 10px;
            align-self: flex-start;
        }

        .industry-card h3 {
            font-size: 1.15rem;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--text-dark);
        }

        .industry-card .card-text {
            color: var(--text-mid);
            font-size: 0.92rem;
            line-height: 1.7;
            flex: 1;
            margin-bottom: 16px;
        }

        .industry-card .card-stats {
            display: flex;
            gap: 16px;
            padding-top: 12px;
            border-top: 1px solid var(--border-light);
        }

        .card-stats .stat-item {
            display: flex;
            flex-direction: column;
            align-items: center;
        }

        .card-stats .stat-num {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--primary);
        }

        .card-stats .stat-label {
            font-size: 0.75rem;
            color: var(--text-light);
        }

        /* ===== Scenario Section ===== */
        .scenario-section {
            background: var(--white);
        }

        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: var(--gap);
        }

        .scenario-item {
            display: flex;
            gap: 20px;
            align-items: flex-start;
            padding: 24px;
            background: var(--bg-warm);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }

        .scenario-item:hover {
            border-color: var(--secondary);
            box-shadow: var(--shadow-sm);
        }

        .scenario-item .scenario-icon {
            width: 56px;
            height: 56px;
            background: var(--gradient-brand);
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--white);
            font-size: 1.4rem;
            flex-shrink: 0;
        }

        .scenario-item h4 {
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 4px;
            color: var(--text-dark);
        }

        .scenario-item p {
            font-size: 0.9rem;
            color: var(--text-mid);
            line-height: 1.7;
        }

        /* ===== Process Flow ===== */
        .process-section {
            background: var(--bg-cream);
        }

        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--gap);
            counter-reset: step;
        }

        .process-step {
            text-align: center;
            padding: 32px 20px;
            background: var(--white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            position: relative;
            transition: all var(--transition);
        }

        .process-step:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }

        .process-step .step-num {
            width: 48px;
            height: 48px;
            background: var(--gradient-brand);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--white);
            font-size: 1.3rem;
            font-weight: 700;
            margin: 0 auto 16px;
        }

        .process-step h4 {
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 8px;
        }

        .process-step p {
            font-size: 0.88rem;
            color: var(--text-mid);
            line-height: 1.6;
        }

        /* ===== Data Section ===== */
        .data-section {
            background: var(--text-dark);
            color: var(--white);
        }

        .data-section .section-title {
            color: var(--white);
        }

        .data-section .section-desc {
            color: rgba(255, 255, 255, 0.7);
        }

        .data-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--gap);
            text-align: center;
        }

        .data-item .data-num {
            font-size: 2.4rem;
            font-weight: 700;
            color: var(--accent);
            line-height: 1.2;
        }

        .data-item .data-label {
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 6px;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--white);
        }

        .faq-list {
            max-width: 820px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            background: var(--bg-warm);
            overflow: hidden;
            transition: border-color var(--transition);
        }

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

        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 18px 24px;
            cursor: pointer;
            font-weight: 500;
            color: var(--text-dark);
            font-size: 1rem;
            user-select: none;
            transition: background var(--transition);
        }

        .faq-question:hover {
            background: var(--primary-light);
        }

        .faq-question .faq-icon {
            font-size: 1.2rem;
            color: var(--primary);
            transition: transform var(--transition);
            flex-shrink: 0;
        }

        .faq-item.open .faq-question .faq-icon {
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 24px;
            color: var(--text-mid);
            font-size: 0.92rem;
            line-height: 1.7;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        /* ===== CTA Section ===== */
        .cta-section {
            background: var(--gradient-brand);
            padding: 72px 0;
            text-align: center;
            color: var(--white);
        }

        .cta-section h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--white);
            margin-bottom: 12px;
        }

        .cta-section p {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.9);
            max-width: 560px;
            margin: 0 auto 28px;
        }

        .btn-group {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 1rem;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            text-decoration: none;
            line-height: 1.2;
        }

        .btn-primary {
            background: var(--white);
            color: var(--primary);
        }

        .btn-primary:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
        }

        .btn-outline-light {
            background: transparent;
            color: var(--white);
            border: 2px solid rgba(255, 255, 255, 0.6);
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: var(--white);
            transform: translateY(-2px);
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--text-dark);
            color: rgba(255, 255, 255, 0.8);
            padding: 60px 0 0;
            flex-shrink: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-brand .logo-text {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--white);
            margin-bottom: 12px;
        }

        .footer-brand .logo-text span {
            color: var(--primary);
        }

        .footer-brand p {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.5);
            line-height: 1.7;
            margin-bottom: 16px;
            max-width: 320px;
        }

        .footer-social {
            display: flex;
            gap: 14px;
        }

        .footer-social a {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.6);
            font-size: 1rem;
            transition: all var(--transition);
        }

        .footer-social a:hover {
            background: var(--primary);
            color: var(--white);
        }

        .footer-col h4 {
            color: var(--white);
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 16px;
        }

        .footer-col ul li {
            margin-bottom: 10px;
        }

        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.9rem;
            transition: color var(--transition);
        }

        .footer-col ul li a:hover {
            color: var(--primary);
        }

        .footer-bottom {
            text-align: center;
            padding: 24px 0;
            color: rgba(255, 255, 255, 0.3);
            font-size: 0.85rem;
        }

        /* ===== Back to Top ===== */
        .back-top {
            position: fixed;
            bottom: 32px;
            right: 32px;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: var(--white);
            border: none;
            font-size: 1.2rem;
            cursor: pointer;
            box-shadow: var(--shadow-md);
            transition: all var(--transition);
            z-index: 99;
            display: flex;
            align-items: center;
            justify-content: center;
            opacity: 0;
            visibility: hidden;
            transform: translateY(12px);
        }

        .back-top.visible {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }

        .back-top:hover {
            background: var(--primary-dark);
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1023px) {
            .sidebar {
                width: var(--nav-collapsed);
            }
            .sidebar .nav-label {
                opacity: 0;
                display: none;
            }
            .sidebar .sidebar-brand .logo-text {
                font-size: 1rem;
            }
            .sidebar .sidebar-brand {
                padding: 16px 12px;
                justify-content: center;
            }
            .sidebar .nav-item {
                padding: 12px;
                justify-content: center;
            }
            .sidebar .nav-item i {
                font-size: 1.2rem;
                width: auto;
            }
            .sidebar .nav-item.active::before {
                display: none;
            }
            .sidebar .sidebar-footer-nav {
                padding: 12px;
            }
            .main-wrapper {
                margin-left: var(--nav-collapsed);
            }
            .page-hero h1 {
                font-size: 2.2rem;
            }
            .industry-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .scenario-grid {
                grid-template-columns: 1fr;
            }
            .process-steps {
                grid-template-columns: repeat(2, 1fr);
            }
            .data-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 32px;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 32px;
            }
        }

        @media (max-width: 767px) {
            .sidebar {
                display: none;
            }
            .mobile-header {
                display: flex;
            }
            .main-wrapper {
                margin-left: 0;
                padding-top: 60px;
            }
            .page-hero {
                min-height: 240px;
                padding: 60px 0 40px;
            }
            .page-hero h1 {
                font-size: 1.8rem;
            }
            .page-hero .hero-sub {
                font-size: 1rem;
            }
            .page-hero .hero-badge-group {
                gap: 12px;
            }
            .hero-badge {
                padding: 10px 16px;
            }
            .hero-badge .badge-num {
                font-size: 1.2rem;
            }
            .section {
                padding: 48px 0;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .section-desc {
                font-size: 0.95rem;
                margin-bottom: 32px;
            }
            .industry-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .scenario-item {
                flex-direction: column;
                align-items: center;
                text-align: center;
                padding: 20px;
            }
            .process-steps {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .data-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .data-item .data-num {
                font-size: 1.8rem;
            }
            .cta-section h2 {
                font-size: 1.4rem;
            }
            .btn-group {
                flex-direction: column;
                align-items: center;
            }
            .btn {
                width: 100%;
                max-width: 280px;
                justify-content: center;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-brand p {
                max-width: 100%;
            }
            .back-top {
                bottom: 20px;
                right: 20px;
                width: 42px;
                height: 42px;
                font-size: 1rem;
            }
        }

        @media (max-width: 480px) {
            .container {
                padding: 0 16px;
            }
            .page-hero h1 {
                font-size: 1.5rem;
            }
            .hero-badge-group {
                flex-direction: column;
                align-items: flex-start;
            }
            .hero-badge {
                width: 100%;
            }
            .industry-card .card-body {
                padding: 18px 16px 16px;
            }
            .scenario-item {
                padding: 16px;
            }
            .process-step {
                padding: 24px 16px;
            }
            .faq-question {
                padding: 14px 16px;
                font-size: 0.95rem;
            }
            .faq-answer {
                padding: 0 16px;
                font-size: 0.88rem;
            }
            .faq-item.open .faq-answer {
                padding: 0 16px 16px;
            }
        }