/* roulang page: index */
:root {
  --primary: #E63946;
  --primary-dark: #C1121F;
  --primary-light: #F1FAEE;
  --secondary: #1D3557;
  --secondary-light: #457B9D;
  --accent: #F4A261;
  --accent-light: #E9C46A;
  --bg-body: #F8F9FA;
  --bg-white: #FFFFFF;
  --bg-dark: #1D3557;
  --text-dark: #1A1A2E;
  --text-body: #2B2D42;
  --text-light: #6C757D;
  --text-white: #FFFFFF;
  --border: #DEE2E6;
  --border-light: #E9ECEF;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
  --shadow-md: 0 6px 24px rgba(0,0,0,0.10);
  --shadow-lg: 0 16px 48px rgba(0,0,0,0.14);
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --container-max: 1200px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;font-size:16px;}
body{font-family:var(--font-sans);color:var(--text-body);background:var(--bg-body);line-height:1.7;-webkit-font-smoothing:antialiased;}
img{max-width:100%;height:auto;display:block;}
a{color:var(--primary);text-decoration:none;transition:var(--transition);}
a:hover{color:var(--primary-dark);}
a:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px;}
button{cursor:pointer;font-family:inherit;border:none;background:none;transition:var(--transition);}
input,textarea{font-family:inherit;border:1px solid var(--border);border-radius:var(--radius-sm);padding:10px 16px;font-size:1rem;transition:var(--transition);}
input:focus,textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(230,57,70,0.15);}
ul{list-style:none;}
.container{max-width:var(--container-max);margin:0 auto;padding:0 24px;}
@media(max-width:768px){.container{padding:0 16px;}}
.section{padding:80px 0;}
@media(max-width:768px){.section{padding:48px 0;}}
.section-title{font-size:2rem;font-weight:700;color:var(--text-dark);margin-bottom:12px;line-height:1.3;}
.section-subtitle{font-size:1.1rem;color:var(--text-light);max-width:640px;margin-bottom:40px;}
.section-header{text-align:center;margin-bottom:48px;}
.section-header .section-subtitle{margin-left:auto;margin-right:auto;}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 28px;border-radius:var(--radius-md);font-size:1rem;font-weight:600;line-height:1.4;transition:var(--transition);border:2px solid transparent;}
.btn-primary{background:var(--primary);color:var(--text-white);border-color:var(--primary);}
.btn-primary:hover{background:var(--primary-dark);border-color:var(--primary-dark);color:var(--text-white);transform:translateY(-2px);box-shadow:0 6px 20px rgba(230,57,70,0.35);}
.btn-secondary{background:transparent;color:var(--primary);border-color:var(--primary);}
.btn-secondary:hover{background:var(--primary);color:var(--text-white);transform:translateY(-2px);}
.btn-ghost{background:rgba(255,255,255,0.15);color:var(--text-white);border-color:rgba(255,255,255,0.3);}
.btn-ghost:hover{background:rgba(255,255,255,0.25);color:var(--text-white);}
.btn-sm{padding:8px 18px;font-size:0.875rem;border-radius:var(--radius-sm);}
.badge{display:inline-block;padding:4px 14px;border-radius:100px;font-size:0.8rem;font-weight:500;background:var(--primary-light);color:var(--primary);border:1px solid rgba(230,57,70,0.15);}
.badge-secondary{background:rgba(69,123,157,0.12);color:var(--secondary-light);border-color:rgba(69,123,157,0.2);}
.badge-accent{background:rgba(244,162,97,0.15);color:#C07A3E;border-color:rgba(244,162,97,0.2);}
.card{background:var(--bg-white);border-radius:var(--radius-md);overflow:hidden;box-shadow:var(--shadow-sm);transition:var(--transition);}
.card:hover{box-shadow:var(--shadow-md);transform:translateY(-4px);}
.card-img{width:100%;height:200px;object-fit:cover;}
.card-body{padding:20px 24px 24px;}
.card-title{font-size:1.2rem;font-weight:600;color:var(--text-dark);margin-bottom:8px;line-height:1.4;}
.card-text{font-size:0.95rem;color:var(--text-light);margin-bottom:16px;line-height:1.6;}
.card-meta{display:flex;align-items:center;gap:16px;font-size:0.85rem;color:var(--text-light);}
/* 导航 */
.header{position:sticky;top:0;z-index:1000;background:rgba(255,255,255,0.92);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid var(--border-light);}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:72px;gap:20px;}
.logo{font-size:1.6rem;font-weight:800;color:var(--text-dark);letter-spacing:-0.5px;display:flex;align-items:center;gap:4px;}
.logo span{color:var(--primary);}
.nav-tabs{display:flex;align-items:center;gap:4px;background:var(--bg-body);border-radius:var(--radius-md);padding:4px;border:1px solid var(--border-light);}
.nav-tabs a{display:block;padding:8px 20px;border-radius:var(--radius-sm);font-size:0.95rem;font-weight:500;color:var(--text-body);transition:var(--transition);white-space:nowrap;}
.nav-tabs a:hover{color:var(--primary);background:rgba(230,57,70,0.06);}
.nav-tabs a.active{background:var(--bg-white);color:var(--primary);box-shadow:var(--shadow-sm);font-weight:600;}
.nav-actions{display:flex;align-items:center;gap:12px;}
.nav-actions .btn{padding:10px 24px;}
.mobile-toggle{display:none;flex-direction:column;gap:5px;padding:8px;background:none;border:none;cursor:pointer;}
.mobile-toggle span{display:block;width:26px;height:2.5px;background:var(--text-dark);border-radius:4px;transition:var(--transition);}
@media(max-width:768px){
  .mobile-toggle{display:flex;}
  .nav-tabs{position:fixed;top:72px;left:0;right:0;background:var(--bg-white);flex-direction:column;padding:16px;border-radius:0;border:none;box-shadow:var(--shadow-lg);gap:2px;transform:translateY(-120%);opacity:0;pointer-events:none;transition:var(--transition);z-index:999;}
  .nav-tabs.open{transform:translateY(0);opacity:1;pointer-events:auto;}
  .nav-tabs a{padding:14px 20px;width:100%;text-align:center;border-radius:var(--radius-sm);}
  .nav-actions .btn{display:none;}
  .nav-actions .btn-mobile{display:inline-flex;}
}
@media(min-width:769px){.nav-actions .btn-mobile{display:none;}}
/* Hero */
.hero{position:relative;min-height:70vh;display:flex;align-items:center;overflow:hidden;background:var(--bg-dark);}
.hero-bg{position:absolute;inset:0;background:url('/assets/images/backpic/back-1.png') center center / cover no-repeat;opacity:0.3;transform:scale(1.05);}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(135deg,rgba(29,53,87,0.92) 0%,rgba(230,57,70,0.55) 100%);}
.hero-content{position:relative;z-index:2;max-width:820px;padding:80px 0;}
.hero-badge{display:inline-block;padding:6px 20px;border-radius:100px;font-size:0.9rem;font-weight:500;background:rgba(255,255,255,0.12);color:var(--text-white);border:1px solid rgba(255,255,255,0.2);backdrop-filter:blur(4px);margin-bottom:24px;}
.hero-title{font-size:3.2rem;font-weight:800;color:var(--text-white);line-height:1.2;margin-bottom:20px;letter-spacing:-0.5px;}
.hero-title span{color:var(--accent);}
.hero-desc{font-size:1.2rem;color:rgba(255,255,255,0.85);max-width:600px;margin-bottom:36px;line-height:1.7;}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap;}
.hero-stats{display:flex;gap:40px;margin-top:48px;padding-top:32px;border-top:1px solid rgba(255,255,255,0.15);}
.hero-stat h3{font-size:2rem;font-weight:700;color:var(--text-white);}
.hero-stat p{font-size:0.95rem;color:rgba(255,255,255,0.7);}
@media(max-width:768px){
  .hero{min-height:60vh;}
  .hero-title{font-size:2.2rem;}
  .hero-desc{font-size:1rem;}
  .hero-stats{gap:24px;flex-wrap:wrap;}
  .hero-stat h3{font-size:1.5rem;}
}
/* 服务板块 */
.services-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;}
.service-card{background:var(--bg-white);border-radius:var(--radius-md);padding:32px 28px;box-shadow:var(--shadow-sm);transition:var(--transition);border:1px solid var(--border-light);text-align:center;}
.service-card:hover{box-shadow:var(--shadow-md);transform:translateY(-6px);border-color:var(--primary);}
.service-icon{width:64px;height:64px;border-radius:16px;display:flex;align-items:center;justify-content:center;margin:0 auto 20px;font-size:1.8rem;color:var(--text-white);}
.service-icon.blue{background:var(--secondary);}
.service-icon.red{background:var(--primary);}
.service-icon.orange{background:var(--accent);}
.service-card h3{font-size:1.25rem;font-weight:600;color:var(--text-dark);margin-bottom:10px;}
.service-card p{font-size:0.95rem;color:var(--text-light);line-height:1.7;}
@media(max-width:992px){.services-grid{grid-template-columns:repeat(2,1fr);}}
@media(max-width:576px){.services-grid{grid-template-columns:1fr;}}
/* 信息列表(CMS) */
.cms-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:28px;}
.cms-card{display:flex;flex-direction:column;background:var(--bg-white);border-radius:var(--radius-md);overflow:hidden;box-shadow:var(--shadow-sm);transition:var(--transition);}
.cms-card:hover{box-shadow:var(--shadow-md);transform:translateY(-4px);}
.cms-card-img{width:100%;height:180px;object-fit:cover;}
.cms-card-body{padding:20px 24px 24px;flex:1;display:flex;flex-direction:column;}
.cms-card-tags{display:flex;gap:8px;margin-bottom:10px;flex-wrap:wrap;}
.cms-card-tags .badge{font-size:0.75rem;padding:3px 12px;}
.cms-card-title{font-size:1.15rem;font-weight:600;color:var(--text-dark);margin-bottom:10px;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.cms-card-title a{color:inherit;}
.cms-card-title a:hover{color:var(--primary);}
.cms-card-excerpt{font-size:0.92rem;color:var(--text-light);line-height:1.6;margin-bottom:14px;flex:1;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.cms-card-footer{display:flex;align-items:center;justify-content:space-between;font-size:0.85rem;color:var(--text-light);border-top:1px solid var(--border-light);padding-top:14px;}
.cms-empty{grid-column:1/-1;text-align:center;padding:48px 24px;background:var(--bg-white);border-radius:var(--radius-md);color:var(--text-light);font-size:1.05rem;}
@media(max-width:768px){.cms-grid{grid-template-columns:1fr;}}
/* 特色板块 */
.features-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.feature-item{text-align:center;padding:28px 16px;background:var(--bg-white);border-radius:var(--radius-md);box-shadow:var(--shadow-sm);transition:var(--transition);border:1px solid var(--border-light);}
.feature-item:hover{box-shadow:var(--shadow-md);transform:translateY(-4px);}
.feature-num{font-size:2.4rem;font-weight:800;color:var(--primary);line-height:1;margin-bottom:8px;}
.feature-item h4{font-size:1.05rem;font-weight:600;color:var(--text-dark);margin-bottom:6px;}
.feature-item p{font-size:0.9rem;color:var(--text-light);}
@media(max-width:992px){.features-grid{grid-template-columns:repeat(2,1fr);}}
@media(max-width:576px){.features-grid{grid-template-columns:1fr;}}
/* 图文区块 */
.media-block{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;}
.media-block-image{border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-md);}
.media-block-image img{width:100%;height:400px;object-fit:cover;transition:var(--transition);}
.media-block-image:hover img{transform:scale(1.03);}
.media-block-content h2{font-size:2rem;font-weight:700;color:var(--text-dark);margin-bottom:16px;line-height:1.3;}
.media-block-content p{font-size:1rem;color:var(--text-light);line-height:1.8;margin-bottom:20px;}
.media-block-content ul li{display:flex;align-items:flex-start;gap:12px;padding:8px 0;font-size:0.98rem;color:var(--text-body);}
.media-block-content ul li i{color:var(--primary);font-size:1.1rem;margin-top:2px;flex-shrink:0;}
@media(max-width:768px){.media-block{grid-template-columns:1fr;gap:32px;}.media-block-image img{height:260px;}}
/* FAQ */
.faq-list{max-width:820px;margin:0 auto;}
.faq-item{border:1px solid var(--border-light);border-radius:var(--radius-md);margin-bottom:12px;overflow:hidden;background:var(--bg-white);transition:var(--transition);}
.faq-item:hover{border-color:var(--primary);}
.faq-question{display:flex;align-items:center;justify-content:space-between;width:100%;padding:20px 24px;font-size:1.05rem;font-weight:500;color:var(--text-dark);text-align:left;background:none;cursor:pointer;transition:var(--transition);}
.faq-question:hover{color:var(--primary);}
.faq-question i{font-size:1.2rem;transition:var(--transition);color:var(--text-light);}
.faq-item.active .faq-question i{transform:rotate(180deg);color:var(--primary);}
.faq-answer{padding:0 24px 20px;font-size:0.95rem;color:var(--text-light);line-height:1.7;display:none;}
.faq-item.active .faq-answer{display:block;}
/* CTA */
.cta-section{background:linear-gradient(135deg,var(--secondary) 0%,#2A4A7F 100%);position:relative;overflow:hidden;}
.cta-section::before{content:'';position:absolute;inset:0;background:url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;opacity:0.08;}
.cta-content{position:relative;z-index:2;text-align:center;padding:80px 0;}
.cta-content h2{font-size:2.2rem;font-weight:700;color:var(--text-white);margin-bottom:16px;}
.cta-content p{font-size:1.1rem;color:rgba(255,255,255,0.85);max-width:600px;margin:0 auto 32px;}
.cta-actions{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;}
/* 页脚 */
.footer{background:var(--bg-dark);color:rgba(255,255,255,0.8);}
.footer-inner{display:grid;grid-template-columns:2fr 1fr 1fr;gap:48px;padding:56px 0 40px;}
.footer-brand .logo{color:var(--text-white);margin-bottom:12px;}
.footer-brand p{font-size:0.92rem;line-height:1.7;max-width:360px;}
.footer h4{font-size:1rem;font-weight:600;color:var(--text-white);margin-bottom:16px;}
.footer ul li{margin-bottom:10px;}
.footer ul li a{color:rgba(255,255,255,0.7);font-size:0.92rem;}
.footer ul li a:hover{color:var(--accent);}
.footer-bottom{border-top:1px solid rgba(255,255,255,0.1);padding:20px 0;display:flex;align-items:center;justify-content:space-between;font-size:0.88rem;color:rgba(255,255,255,0.5);flex-wrap:wrap;gap:12px;}
.footer-bottom-links{display:flex;gap:20px;}
.footer-bottom-links a{color:rgba(255,255,255,0.5);font-size:0.88rem;}
.footer-bottom-links a:hover{color:var(--accent);}
@media(max-width:768px){.footer-inner{grid-template-columns:1fr;gap:32px;}.footer-bottom{flex-direction:column;text-align:center;}}
/* 响应式辅助 */
@media(max-width:520px){
  .hero-title{font-size:1.8rem;}
  .section-title{font-size:1.5rem;}
  .btn{padding:10px 20px;font-size:0.92rem;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn{justify-content:center;}
}
/* 动画 */
.fade-in{opacity:0;transform:translateY(24px);animation:fadeIn 0.7s ease forwards;}
@keyframes fadeIn{to{opacity:1;transform:translateY(0);}}
.delay-1{animation-delay:0.1s;}
.delay-2{animation-delay:0.2s;}
.delay-3{animation-delay:0.3s;}

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --primary: #e74c3c;
            --primary-dark: #c0392b;
            --primary-light: #fadbd8;
            --secondary: #2c3e50;
            --secondary-light: #34495e;
            --accent: #f39c12;
            --accent-light: #fef5e7;
            --bg: #f8f9fa;
            --bg-card: #ffffff;
            --bg-dark: #1a1a2e;
            --text: #2d3436;
            --text-light: #636e72;
            --text-white: #f5f6fa;
            --border: #e8e8e8;
            --border-light: #f0f0f0;
            --radius: 14px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow: 0 4px 20px rgba(0,0,0,0.06);
            --shadow-hover: 0 12px 40px rgba(0,0,0,0.12);
            --shadow-lg: 0 8px 40px rgba(0,0,0,0.10);
            --transition: 0.30s cubic-bezier(0.4, 0, 0.2, 1);
            --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Noto Sans SC', sans-serif;
            --max-width: 1200px;
            --header-h: 72px;
            --spacer: 80px;
            --spacer-sm: 48px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: var(--font);
            color: var(--text);
            background: var(--bg);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        a { color: inherit; text-decoration: none; transition: var(--transition); }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.25; font-weight: 700; color: var(--secondary); }
        h1 { font-size: clamp(1.8rem, 4vw, 2.8rem); }
        h2 { font-size: clamp(1.5rem, 3vw, 2.2rem); }
        h3 { font-size: clamp(1.2rem, 2vw, 1.6rem); }
        h4 { font-size: 1.15rem; }
        p { margin-bottom: 1rem; color: var(--text-light); }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .section-title {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-title h2 {
            display: inline-block;
            position: relative;
            padding-bottom: 14px;
        }
        .section-title h2::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 60px;
            height: 4px;
            background: var(--primary);
            border-radius: 4px;
        }
        .section-title p {
            margin-top: 12px;
            font-size: 1.05rem;
            color: var(--text-light);
            max-width: 640px;
            margin-left: auto;
            margin-right: auto;
        }

        /* ===== Header & Navigation ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(255,255,255,0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-light);
            height: var(--header-h);
            transition: var(--transition);
        }
        .header.scrolled {
            box-shadow: 0 2px 30px rgba(0,0,0,0.06);
        }
        .header-inner {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .logo {
            font-size: 1.5rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: var(--secondary);
            display: flex;
            align-items: center;
            gap: 2px;
        }
        .logo span { color: var(--primary); }
        .nav-tabs {
            display: flex;
            align-items: center;
            gap: 6px;
            background: var(--bg);
            padding: 4px;
            border-radius: 40px;
            border: 1px solid var(--border-light);
        }
        .nav-tabs a {
            padding: 8px 20px;
            border-radius: 30px;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-light);
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-tabs a:hover {
            color: var(--primary);
            background: rgba(231,76,60,0.06);
        }
        .nav-tabs a.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 12px rgba(231,76,60,0.30);
        }
        .nav-cta {
            background: var(--primary);
            color: #fff;
            padding: 10px 28px;
            border-radius: 30px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .nav-cta:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(231,76,60,0.30);
        }
        .menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--secondary);
            cursor: pointer;
            padding: 6px;
            border-radius: var(--radius-sm);
        }
        .menu-toggle:focus { outline: 2px solid var(--primary); outline-offset: 2px; }

        /* ===== Hero / Banner (文章页顶部) ===== */
        .article-banner {
            margin-top: var(--header-h);
            background: linear-gradient(135deg, #1a1a2e 0%, #16213e 60%, #0f3460 100%);
            padding: 80px 0 60px;
            position: relative;
            overflow: hidden;
        }
        .article-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            opacity: 0.15;
            pointer-events: none;
        }
        .article-banner .container {
            position: relative;
            z-index: 1;
        }
        .article-banner .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.88rem;
            color: rgba(255,255,255,0.6);
            margin-bottom: 24px;
        }
        .article-banner .breadcrumb a {
            color: rgba(255,255,255,0.7);
            transition: var(--transition);
        }
        .article-banner .breadcrumb a:hover { color: var(--primary); }
        .article-banner .breadcrumb .sep { color: rgba(255,255,255,0.35); }
        .article-banner h1 {
            color: #fff;
            font-size: clamp(1.6rem, 3.5vw, 2.6rem);
            max-width: 800px;
            margin-bottom: 16px;
            line-height: 1.3;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 20px 32px;
            align-items: center;
            color: rgba(255,255,255,0.7);
            font-size: 0.9rem;
        }
        .article-meta i { margin-right: 6px; opacity: 0.6; }
        .article-meta .category-tag {
            background: rgba(231,76,60,0.25);
            color: #ffb3a6;
            padding: 4px 16px;
            border-radius: 30px;
            font-size: 0.82rem;
            font-weight: 500;
        }

        /* ===== Article Content ===== */
        .article-main {
            padding: 60px 0;
        }
        .article-wrapper {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 48px;
            align-items: start;
        }
        .article-body {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 48px 40px;
            box-shadow: var(--shadow);
        }
        .article-body p {
            font-size: 1.05rem;
            line-height: 1.9;
            color: var(--text);
            margin-bottom: 1.4rem;
        }
        .article-body h2, .article-body h3 {
            margin-top: 2rem;
            margin-bottom: 1rem;
            color: var(--secondary);
        }
        .article-body h2 { font-size: 1.6rem; border-left: 4px solid var(--primary); padding-left: 16px; }
        .article-body h3 { font-size: 1.25rem; }
        .article-body ul, .article-body ol {
            margin-bottom: 1.4rem;
            padding-left: 1.5rem;
            color: var(--text);
        }
        .article-body ul { list-style: disc; }
        .article-body ol { list-style: decimal; }
        .article-body li { margin-bottom: 0.5rem; line-height: 1.7; }
        .article-body img {
            border-radius: var(--radius);
            margin: 2rem 0;
            box-shadow: var(--shadow);
            width: 100%;
        }
        .article-body blockquote {
            border-left: 4px solid var(--primary);
            background: var(--primary-light);
            padding: 20px 24px;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin: 1.6rem 0;
            font-style: italic;
            color: var(--secondary);
        }
        .article-body a {
            color: var(--primary);
            border-bottom: 1px solid transparent;
        }
        .article-body a:hover { border-bottom-color: var(--primary); }
        .article-notfound {
            text-align: center;
            padding: 80px 20px;
        }
        .article-notfound i {
            font-size: 3.5rem;
            color: var(--text-light);
            margin-bottom: 20px;
            opacity: 0.4;
        }
        .article-notfound h2 {
            margin-bottom: 12px;
            color: var(--secondary);
        }
        .article-notfound p {
            color: var(--text-light);
            margin-bottom: 24px;
        }
        .btn-back {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary);
            color: #fff;
            padding: 12px 32px;
            border-radius: 30px;
            font-weight: 600;
            transition: var(--transition);
        }
        .btn-back:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(231,76,60,0.30);
        }

        /* ===== Sidebar ===== */
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 32px;
        }
        .sidebar-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 28px 24px;
            box-shadow: var(--shadow);
        }
        .sidebar-card h3 {
            font-size: 1.1rem;
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--border-light);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-card h3 i { color: var(--primary); }
        .sidebar-list li {
            padding: 10px 0;
            border-bottom: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .sidebar-list li:last-child { border-bottom: none; }
        .sidebar-list li:hover { padding-left: 6px; }
        .sidebar-list a {
            font-size: 0.95rem;
            color: var(--text);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-list a:hover { color: var(--primary); }
        .sidebar-list .tag {
            background: var(--bg);
            color: var(--text-light);
            padding: 2px 12px;
            border-radius: 20px;
            font-size: 0.75rem;
            margin-left: auto;
        }
        .sidebar-cta {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            color: #fff;
            border-radius: var(--radius);
            padding: 32px 24px;
            text-align: center;
        }
        .sidebar-cta h3 {
            color: #fff;
            border-bottom: none;
            justify-content: center;
        }
        .sidebar-cta p {
            color: rgba(255,255,255,0.8);
            font-size: 0.92rem;
            margin-bottom: 20px;
        }
        .sidebar-cta .btn-white {
            background: #fff;
            color: var(--primary);
            padding: 10px 28px;
            border-radius: 30px;
            font-weight: 600;
            display: inline-block;
            transition: var(--transition);
        }
        .sidebar-cta .btn-white:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0,0,0,0.20);
        }

        /* ===== Related Posts ===== */
        .related-section {
            padding: 60px 0 80px;
            background: var(--bg);
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .related-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        .related-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }
        .related-card img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            border-radius: 0;
        }
        .related-card .card-body {
            padding: 20px 20px 24px;
        }
        .related-card .card-body h4 {
            font-size: 1.05rem;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card .card-body p {
            font-size: 0.88rem;
            color: var(--text-light);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 12px;
        }
        .related-card .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.8rem;
            color: var(--text-light);
        }
        .related-card .card-meta .tag-sm {
            background: var(--primary-light);
            color: var(--primary);
            padding: 2px 12px;
            border-radius: 20px;
            font-weight: 500;
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--secondary);
            color: rgba(255,255,255,0.85);
            padding: 56px 0 0;
        }
        .footer-inner {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255,255,255,0.10);
        }
        .footer .logo {
            color: #fff;
            font-size: 1.6rem;
            margin-bottom: 16px;
        }
        .footer .logo span { color: var(--primary); }
        .footer-brand p {
            color: rgba(255,255,255,0.6);
            font-size: 0.92rem;
            line-height: 1.8;
            max-width: 360px;
        }
        .footer h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 18px;
            position: relative;
            padding-bottom: 10px;
        }
        .footer h4::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 30px;
            height: 2px;
            background: var(--primary);
        }
        .footer ul li { margin-bottom: 10px; }
        .footer ul li a {
            color: rgba(255,255,255,0.6);
            font-size: 0.9rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .footer ul li a:hover { color: var(--primary); padding-left: 4px; }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            padding: 20px 0 28px;
            font-size: 0.84rem;
            color: rgba(255,255,255,0.45);
        }
        .footer-bottom-links {
            display: flex;
            gap: 24px;
        }
        .footer-bottom-links a {
            color: rgba(255,255,255,0.45);
            transition: var(--transition);
        }
        .footer-bottom-links a:hover { color: var(--primary); }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .article-wrapper {
                grid-template-columns: 1fr;
            }
            .sidebar {
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-inner {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 768px) {
            :root { --header-h: 64px; --spacer: 48px; --spacer-sm: 32px; }
            .header-inner { padding: 0 16px; }
            .nav-tabs { display: none; }
            .nav-tabs.open {
                display: flex;
                flex-direction: column;
                position: absolute;
                top: var(--header-h);
                left: 0;
                right: 0;
                background: rgba(255,255,255,0.98);
                backdrop-filter: blur(16px);
                border-radius: 0 0 var(--radius) var(--radius);
                padding: 16px;
                gap: 8px;
                border: 1px solid var(--border-light);
                box-shadow: var(--shadow-lg);
            }
            .nav-tabs.open a { width: 100%; text-align: center; }
            .nav-cta { display: none; }
            .menu-toggle { display: block; }
            .article-banner { padding: 60px 0 40px; }
            .article-body { padding: 28px 20px; }
            .sidebar { grid-template-columns: 1fr; }
            .related-grid { grid-template-columns: 1fr; }
            .footer-inner { grid-template-columns: 1fr; gap: 28px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .footer-bottom-links { justify-content: center; }
        }

        @media (max-width: 520px) {
            .article-banner h1 { font-size: 1.4rem; }
            .article-meta { flex-direction: column; gap: 10px; align-items: flex-start; }
            .article-body p { font-size: 0.98rem; }
            .section-title h2 { font-size: 1.4rem; }
            .related-card img { height: 140px; }
        }

        /* ===== Utility ===== */
        .text-center { text-align: center; }
        .mt-2 { margin-top: 1rem; }
        .mb-2 { margin-bottom: 1rem; }
        .gap-1 { gap: 0.5rem; }
        .flex-center { display: flex; align-items: center; justify-content: center; }
        .sr-only {
            position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
            overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
        }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #fae0e0;
            --secondary: #1d3557;
            --secondary-light: #457b9d;
            --accent: #f4a261;
            --accent-light: #fef0e0;
            --bg: #ffffff;
            --bg-alt: #f8f9fa;
            --bg-dark: #1a1a2e;
            --text: #1a1a2e;
            --text-light: #6c757d;
            --text-white: #ffffff;
            --border: #e9ecef;
            --border-light: #f0f0f0;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12);
            --shadow-hover: 0 8px 30px rgba(230, 57, 70, 0.15);
            --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
            --container-max: 1200px;
            --header-height: 72px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

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

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

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

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

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

        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
        }

        button {
            cursor: pointer;
            background: none;
        }

        ul {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            font-weight: 700;
            color: var(--text);
        }

        h1 {
            font-size: 2.8rem;
        }
        h2 {
            font-size: 2rem;
        }
        h3 {
            font-size: 1.4rem;
        }
        h4 {
            font-size: 1.15rem;
        }

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

        /* ===== Header & Nav (分段标签导航) ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            height: var(--header-height);
            display: flex;
            align-items: center;
            transition: var(--transition);
        }

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

        .logo {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--text);
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 2px;
        }

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

        .nav-tabs {
            display: flex;
            align-items: center;
            gap: 6px;
            background: var(--bg-alt);
            padding: 4px;
            border-radius: var(--radius-lg);
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }

        .nav-tabs::-webkit-scrollbar {
            display: none;
        }

        .nav-tabs a {
            padding: 8px 20px;
            border-radius: var(--radius-lg);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-light);
            white-space: nowrap;
            transition: var(--transition);
            position: relative;
        }

        .nav-tabs a:hover {
            color: var(--text);
            background: rgba(230, 57, 70, 0.06);
        }

        .nav-tabs a.active {
            color: var(--text-white);
            background: var(--primary);
            box-shadow: 0 4px 12px rgba(230, 57, 70, 0.3);
        }

        .nav-tabs a.active:hover {
            background: var(--primary-dark);
        }

        .header-cta {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .header-cta .btn {
            padding: 8px 22px;
            border-radius: var(--radius-lg);
            font-size: 0.85rem;
            font-weight: 600;
        }

        .btn-primary {
            background: var(--primary);
            color: var(--text-white);
            border: 2px solid var(--primary);
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(230, 57, 70, 0.25);
        }

        .btn-outline {
            background: transparent;
            color: var(--text);
            border: 2px solid var(--border);
        }

        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
        }

        .mobile-toggle {
            display: none;
            font-size: 1.5rem;
            color: var(--text);
            padding: 4px 8px;
            border-radius: var(--radius-sm);
            background: var(--bg-alt);
        }

        .mobile-toggle:active {
            background: var(--border);
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 520px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            overflow: hidden;
            background: var(--bg-dark);
        }

        .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            opacity: 0.45;
            transform: scale(1.05);
            transition: transform 8s ease;
        }

        .hero:hover .hero-bg {
            transform: scale(1);
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26, 26, 46, 0.85) 0%, rgba(230, 57, 70, 0.55) 100%);
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 820px;
            padding: 60px 24px;
        }

        .hero-tag {
            display: inline-block;
            padding: 6px 18px;
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(4px);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: var(--radius-lg);
            color: var(--text-white);
            font-size: 0.85rem;
            font-weight: 500;
            letter-spacing: 0.5px;
            margin-bottom: 20px;
        }

        .hero h1 {
            font-size: 3.2rem;
            color: var(--text-white);
            margin-bottom: 16px;
            letter-spacing: -0.5px;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
        }

        .hero h1 span {
            color: var(--accent);
        }

        .hero p {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 620px;
            margin: 0 auto 32px;
            line-height: 1.8;
        }

        .hero-actions {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .hero-actions .btn {
            padding: 14px 36px;
            border-radius: var(--radius-lg);
            font-size: 1rem;
            font-weight: 600;
            transition: var(--transition);
        }

        .hero-actions .btn-primary {
            background: var(--accent);
            border-color: var(--accent);
            color: var(--text);
        }

        .hero-actions .btn-primary:hover {
            background: #e08c4a;
            border-color: #e08c4a;
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(244, 162, 97, 0.35);
        }

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

        .hero-actions .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: var(--text-white);
            transform: translateY(-2px);
        }

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

        .section-alt {
            background: var(--bg-alt);
        }

        .section-dark {
            background: var(--bg-dark);
            color: var(--text-white);
        }

        .section-dark h2,
        .section-dark h3 {
            color: var(--text-white);
        }

        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }

        .section-header h2 {
            position: relative;
            display: inline-block;
            margin-bottom: 12px;
        }

        .section-header h2::after {
            content: '';
            display: block;
            width: 60px;
            height: 4px;
            background: var(--primary);
            border-radius: 4px;
            margin: 12px auto 0;
        }

        .section-header p {
            color: var(--text-light);
            max-width: 560px;
            margin: 12px auto 0;
            font-size: 1.05rem;
        }

        .section-dark .section-header p {
            color: rgba(255, 255, 255, 0.7);
        }

        .section-header.light h2 {
            color: var(--text-white);
        }

        .section-header.light h2::after {
            background: var(--accent);
        }

        .section-header.light p {
            color: rgba(255, 255, 255, 0.75);
        }

        /* ===== Guide Categories (核心指南分类) ===== */
        .guide-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .guide-card {
            background: var(--bg);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
            border: 1px solid var(--border);
            display: flex;
            flex-direction: column;
        }

        .guide-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: var(--primary-light);
        }

        .guide-card-img {
            height: 200px;
            overflow: hidden;
            position: relative;
        }

        .guide-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }

        .guide-card:hover .guide-card-img img {
            transform: scale(1.06);
        }

        .guide-card-img .badge {
            position: absolute;
            top: 14px;
            left: 14px;
            background: var(--primary);
            color: var(--text-white);
            padding: 4px 14px;
            border-radius: var(--radius-lg);
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.3px;
        }

        .guide-card-body {
            padding: 24px 22px 26px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .guide-card-body h3 {
            font-size: 1.2rem;
            margin-bottom: 8px;
        }

        .guide-card-body h3 a {
            color: var(--text);
        }

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

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

        .guide-card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 14px;
            border-top: 1px solid var(--border-light);
            font-size: 0.82rem;
            color: var(--text-light);
        }

        .guide-card-meta .tag {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 2px 12px;
            background: var(--primary-light);
            color: var(--primary-dark);
            border-radius: var(--radius-lg);
            font-size: 0.75rem;
            font-weight: 500;
        }

        .guide-card-meta .tag i {
            font-size: 0.7rem;
        }

        /* ===== Features / 服务优势 ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .feature-item {
            text-align: center;
            padding: 32px 18px;
            background: var(--bg);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            transition: var(--transition);
        }

        .feature-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow);
            border-color: var(--primary-light);
        }

        .feature-icon {
            width: 64px;
            height: 64px;
            margin: 0 auto 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--primary-light);
            border-radius: 50%;
            font-size: 1.6rem;
            color: var(--primary);
            transition: var(--transition);
        }

        .feature-item:hover .feature-icon {
            background: var(--primary);
            color: var(--text-white);
            transform: scale(1.05);
        }

        .feature-item h4 {
            font-size: 1.05rem;
            margin-bottom: 8px;
        }

        .feature-item p {
            font-size: 0.88rem;
            color: var(--text-light);
            line-height: 1.7;
        }

        /* ===== Scenarios / 适用场景 ===== */
        .scenarios-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .scenario-card {
            display: flex;
            align-items: flex-start;
            gap: 18px;
            padding: 24px;
            background: var(--bg);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            transition: var(--transition);
        }

        .scenario-card:hover {
            box-shadow: var(--shadow);
            border-color: var(--secondary-light);
            transform: translateY(-2px);
        }

        .scenario-num {
            flex-shrink: 0;
            width: 44px;
            height: 44px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--secondary);
            color: var(--text-white);
            border-radius: 50%;
            font-weight: 700;
            font-size: 1.1rem;
        }

        .scenario-card:nth-child(2n) .scenario-num {
            background: var(--primary);
        }
        .scenario-card:nth-child(3n) .scenario-num {
            background: var(--accent);
            color: var(--text);
        }

        .scenario-text h4 {
            font-size: 1.05rem;
            margin-bottom: 6px;
        }

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

        /* ===== Process / 流程步骤 ===== */
        .process-steps {
            display: flex;
            justify-content: space-between;
            gap: 20px;
            position: relative;
            counter-reset: step;
        }

        .process-steps::before {
            content: '';
            position: absolute;
            top: 40px;
            left: 60px;
            right: 60px;
            height: 3px;
            background: var(--border);
            z-index: 0;
            border-radius: 3px;
        }

        .step-item {
            flex: 1;
            text-align: center;
            position: relative;
            z-index: 1;
            background: var(--bg-alt);
            padding: 24px 16px 20px;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            transition: var(--transition);
        }

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

        .step-circle {
            width: 56px;
            height: 56px;
            margin: 0 auto 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--primary);
            color: var(--text-white);
            border-radius: 50%;
            font-weight: 700;
            font-size: 1.2rem;
            box-shadow: 0 4px 14px rgba(230, 57, 70, 0.25);
            position: relative;
            z-index: 2;
        }

        .step-item:nth-child(2n) .step-circle {
            background: var(--secondary);
            box-shadow: 0 4px 14px rgba(29, 53, 87, 0.25);
        }
        .step-item:nth-child(3n) .step-circle {
            background: var(--accent);
            box-shadow: 0 4px 14px rgba(244, 162, 97, 0.25);
            color: var(--text);
        }

        .step-item h4 {
            font-size: 1rem;
            margin-bottom: 6px;
        }

        .step-item p {
            font-size: 0.85rem;
            color: var(--text-light);
            line-height: 1.6;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

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

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

        .faq-question {
            width: 100%;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 18px 24px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text);
            background: transparent;
            text-align: left;
            gap: 12px;
            transition: var(--transition);
        }

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

        .faq-question .fa-chevron-down {
            font-size: 0.8rem;
            color: var(--text-light);
            transition: var(--transition);
            flex-shrink: 0;
        }

        .faq-item.active .faq-question .fa-chevron-down {
            transform: rotate(180deg);
            color: var(--primary);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
            color: var(--text-light);
            font-size: 0.92rem;
            line-height: 1.8;
        }

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

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--secondary) 0%, #2a4a7f 100%);
            padding: 80px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.1;
        }

        .cta-section .container {
            position: relative;
            z-index: 1;
        }

        .cta-section h2 {
            color: var(--text-white);
            font-size: 2.2rem;
            margin-bottom: 12px;
        }

        .cta-section p {
            color: rgba(255, 255, 255, 0.8);
            max-width: 520px;
            margin: 0 auto 32px;
            font-size: 1.05rem;
        }

        .cta-section .btn {
            padding: 16px 44px;
            border-radius: var(--radius-lg);
            font-size: 1.05rem;
            font-weight: 600;
        }

        .cta-section .btn-primary {
            background: var(--accent);
            border-color: var(--accent);
            color: var(--text);
        }

        .cta-section .btn-primary:hover {
            background: #e08c4a;
            border-color: #e08c4a;
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(244, 162, 97, 0.3);
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.75);
            padding: 56px 0 0;
        }

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

        .footer-brand .logo {
            font-size: 1.5rem;
            color: var(--text-white);
            margin-bottom: 14px;
            display: inline-block;
        }

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

        .footer-brand p {
            font-size: 0.88rem;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.6);
            max-width: 340px;
            margin-top: 10px;
        }

        .footer h4 {
            color: var(--text-white);
            font-size: 1rem;
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }

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

        .footer ul li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.88rem;
            transition: var(--transition);
        }

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

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 0 24px;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.45);
            flex-wrap: wrap;
            gap: 10px;
        }

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

        .footer-bottom-links a {
            color: rgba(255, 255, 255, 0.45);
            font-size: 0.82rem;
        }

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

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .guide-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-steps {
                flex-wrap: wrap;
                justify-content: center;
            }
            .process-steps::before {
                display: none;
            }
            .step-item {
                flex: 0 0 calc(50% - 16px);
                min-width: 180px;
            }
            .footer-inner {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            :root {
                --header-height: 64px;
            }
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.6rem;
            }
            .hero {
                min-height: 420px;
            }
            .hero h1 {
                font-size: 2.2rem;
            }
            .hero p {
                font-size: 1rem;
            }
            .hero-content {
                padding: 40px 20px;
            }
            .section {
                padding: 56px 0;
            }
            .section-header {
                margin-bottom: 32px;
            }
            .guide-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .features-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .feature-item {
                padding: 24px 14px;
            }
            .scenarios-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .step-item {
                flex: 0 0 calc(50% - 12px);
                min-width: 140px;
            }
            .footer-inner {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .nav-tabs {
                gap: 4px;
                padding: 3px;
            }
            .nav-tabs a {
                padding: 6px 14px;
                font-size: 0.8rem;
            }
            .header-cta .btn {
                padding: 6px 16px;
                font-size: 0.78rem;
            }
            .mobile-toggle {
                display: block;
            }
            .nav-tabs-wrapper {
                display: none;
                position: absolute;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(12px);
                border-bottom: 1px solid var(--border);
                padding: 16px 24px;
                box-shadow: var(--shadow);
            }
            .nav-tabs-wrapper.open {
                display: block;
            }
            .nav-tabs {
                flex-direction: column;
                background: transparent;
                padding: 0;
                border-radius: 0;
                gap: 6px;
            }
            .nav-tabs a {
                padding: 12px 16px;
                border-radius: var(--radius-sm);
                width: 100%;
                text-align: center;
            }
            .nav-tabs a.active {
                background: var(--primary);
            }
        }

        @media (max-width: 520px) {
            .hero h1 {
                font-size: 1.7rem;
            }
            .hero-actions .btn {
                padding: 12px 24px;
                font-size: 0.9rem;
                width: 100%;
            }
            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .features-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .step-item {
                flex: 0 0 100%;
            }
            .faq-question {
                padding: 14px 16px;
                font-size: 0.92rem;
            }
            .faq-answer {
                padding: 0 16px;
                font-size: 0.85rem;
            }
            .faq-item.active .faq-answer {
                padding: 0 16px 16px;
            }
            .cta-section h2 {
                font-size: 1.6rem;
            }
            .cta-section .btn {
                padding: 14px 28px;
                font-size: 0.95rem;
                width: 100%;
            }
        }

        /* ===== Scrollbar ===== */
        ::-webkit-scrollbar {
            width: 6px;
            height: 6px;
        }

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

        ::-webkit-scrollbar-thumb {
            background: var(--border);
            border-radius: 6px;
        }

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

        /* ===== Selection ===== */
        ::selection {
            background: var(--primary);
            color: var(--text-white);
        }