/* roulang page: index */
:root{
    --primary:#1e3a5f;--primary-dark:#152a45;--primary-light:#2d5f8a;
    --accent:#0ea5a4;--accent-light:#d7f2f1;--accent-dark:#0b7f7e;
    --bg-body:#f5f7fb;--bg-white:#ffffff;--bg-light:#eef2f7;
    --text-main:#1e293b;--text-secondary:#5b6b7f;--text-muted:#8899aa;
    --border:#dfe4ec;--border-light:#edf0f4;
    --radius-sm:8px;--radius:14px;--radius-lg:20px;
    --shadow-xs:0 1px 2px rgba(16,24,40,.04);
    --shadow-sm:0 2px 8px rgba(16,24,40,.06);
    --shadow-md:0 8px 24px rgba(16,24,40,.08);
    --shadow-lg:0 16px 48px rgba(16,24,40,.12);
    --transition:all .3s ease;
    --sidebar-width:264px;
    --font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font-family);background:var(--bg-body);color:var(--text-main);line-height:1.7;-webkit-font-smoothing:antialiased}
a{text-decoration:none;color:inherit;transition:var(--transition)}
img{max-width:100%;height:auto}
button{font-family:inherit}

.site-wrapper{display:flex;min-height:100vh}

/* 左侧导航 */
.sidebar{
    width:var(--sidebar-width);background:var(--bg-white);
    border-right:1px solid var(--border);
    position:fixed;top:0;left:0;bottom:0;z-index:1050;
    display:flex;flex-direction:column;
    padding:28px 20px 20px;
    transition:transform .35s ease;
}
.sidebar .brand-logo{
    display:inline-flex;align-items:center;font-size:1.6rem;font-weight:800;
    color:var(--primary);letter-spacing:-.5px;
}
.sidebar .brand-logo span{color:var(--accent)}
.side-nav{margin-top:42px;display:flex;flex-direction:column;gap:4px}
.side-nav .nav-link{
    display:flex;align-items:center;gap:12px;
    padding:13px 16px;border-radius:var(--radius);
    color:var(--text-secondary);font-size:.95rem;font-weight:600;
    transition:var(--transition);
    border-left:3px solid transparent;
}
.side-nav .nav-link i{width:20px;text-align:center;font-size:1.05rem}
.side-nav .nav-link:hover{background:var(--bg-light);color:var(--primary);transform:translateX(2px)}
.side-nav .nav-link.active{background:var(--accent-light);color:var(--primary);border-left-color:var(--accent)}
.sidebar-foot{margin-top:auto;padding-top:20px;border-top:1px solid var(--border-light)}
.sidebar-foot p{font-size:.8rem;color:var(--text-muted);margin:0;line-height:1.5}

/* 移动端顶部 */
.mobile-header{
    display:none;
    background:var(--bg-white);border-bottom:1px solid var(--border);
    padding:14px 20px;position:sticky;top:0;z-index:1060;
    align-items:center;justify-content:space-between;
}
.mobile-header .brand-logo{font-size:1.35rem;font-weight:800;color:var(--primary)}
.mobile-header .brand-logo span{color:var(--accent)}
.mobile-toggle{
    background:none;border:1px solid var(--border);border-radius:var(--radius-sm);
    width:42px;height:42px;display:flex;align-items:center;justify-content:center;
    font-size:1.2rem;color:var(--primary);cursor:pointer;
}
.mobile-overlay{display:none}
.sidebar-open{transform:translateX(0)!important}

/* 主内容区 */
.main-content{margin-left:var(--sidebar-width);flex:1;min-width:0}

.container{max-width:1240px;padding:0 24px}

/* Hero */
.hero{
    position:relative;background-size:cover;background-position:center;
    padding:130px 0 130px;
}
.hero::before{content:"";position:absolute;inset:0;background:linear-gradient(115deg,rgba(21,42,69,.88) 30%,rgba(14,165,164,.65) 100%)}
.hero .container{position:relative;z-index:2}
.hero-badge{
    display:inline-block;background:rgba(255,255,255,.15);color:#fff;
    border:1px solid rgba(255,255,255,.3);
    padding:7px 18px;border-radius:50px;font-size:.9rem;font-weight:600;
    letter-spacing:1px;backdrop-filter:blur(4px);margin-bottom:22px;
}
.hero h1{
    color:#fff;font-size:3.2rem;font-weight:800;line-height:1.18;
    max-width:600px;margin-bottom:24px;letter-spacing:-.5px;
}
.hero p{color:rgba(255,255,255,.9);font-size:1.15rem;max-width:560px;margin-bottom:36px;line-height:1.8}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.btn{
    padding:13px 28px;border-radius:50px;font-weight:700;font-size:.95rem;
    transition:var(--transition);display:inline-flex;align-items:center;gap:8px;
    border:none;cursor:pointer;
}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-dark);color:#fff;transform:translateY(-2px);box-shadow:0 8px 24px rgba(14,165,164,.35)}
.btn-outline-light{border:1.5px solid rgba(255,255,255,.6);color:#fff;background:transparent}
.btn-outline-light:hover{background:rgba(255,255,255,.1);border-color:#fff;color:#fff;transform:translateY(-2px)}
.btn-light{background:#fff;color:var(--primary)}
.btn-light:hover{background:var(--bg-light);transform:translateY(-2px);box-shadow:var(--shadow-md)}
.btn-outline{border:1.5px solid var(--accent);color:var(--accent);background:transparent}
.btn-outline:hover{background:var(--accent);color:#fff;transform:translateY(-2px);box-shadow:0 8px 24px rgba(14,165,164,.25)}

/* section */
.section{padding:96px 0}
.section-light{background:var(--bg-white)}
.section-blue{background:var(--primary);color:#fff}
.section-head{max-width:720px;margin-bottom:56px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-tag{
    display:inline-block;background:var(--accent-light);color:var(--accent-dark);
    font-size:.82rem;font-weight:700;padding:6px 16px;border-radius:50px;
    margin-bottom:16px;letter-spacing:.5px;
}
.section-head h2{font-size:2.2rem;font-weight:800;color:var(--text-main);line-height:1.25;margin-bottom:14px}
.section-head p{font-size:1.05rem;color:var(--text-secondary);line-height:1.8;margin:0}

/* 特色卡片 */
.feature-card{
    background:var(--bg-white);border:1px solid var(--border-light);
    border-radius:var(--radius-lg);padding:36px 28px;height:100%;
    transition:var(--transition);
}
.feature-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-4px);border-color:transparent}
.feature-card i{
    font-size:1.9rem;color:var(--accent);
    display:inline-flex;align-items:center;justify-content:center;
    width:70px;height:70px;border-radius:50%;
    background:var(--accent-light);margin-bottom:22px;
}
.feature-card h3{font-size:1.25rem;font-weight:700;margin-bottom:12px;color:var(--primary)}
.feature-card p{color:var(--text-secondary);font-size:.95rem;line-height:1.75;margin:0}

/* 分类卡片 */
.category-card{
    border-radius:var(--radius-lg);border:1px solid var(--border-light);
    overflow:hidden;height:100%;background:var(--bg-white);
    transition:var(--transition);display:block;
}
.category-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-6px);border-color:transparent}
.category-card img{width:100%;height:200px;object-fit:cover;display:block;transition:transform .5s ease}
.category-card:hover img{transform:scale(1.04)}
.card-body-custom{padding:28px}
.category-card h3{font-size:1.3rem;font-weight:700;color:var(--primary);margin-bottom:12px}
.category-card p{color:var(--text-secondary);font-size:.95rem;line-height:1.75;margin-bottom:20px}
.btn-text{display:inline-flex;align-items:center;gap:8px;color:var(--accent);font-weight:700;font-size:.92rem}
.btn-text i{transition:transform .3s ease}
.category-card:hover .btn-text i{transform:translateX(5px)}

/* CMS列表 */
.cms-list-wrap{background:var(--bg-white);border-radius:var(--radius-lg);border:1px solid var(--border-light);padding:8px 0;box-shadow:var(--shadow-sm)}
.cms-item{
    display:flex;align-items:center;gap:18px;
    padding:20px 28px;border-bottom:1px solid var(--border-light);
    transition:var(--transition);
}
.cms-item:last-child{border-bottom:none}
.cms-item:hover{background:var(--bg-light);padding-left:36px}
.cms-item-cat{
    background:var(--accent-light);color:var(--accent-dark);
    font-size:.78rem;font-weight:700;padding:5px 14px;
    border-radius:50px;white-space:nowrap;flex-shrink:0;
}
.cms-item-title{flex:1;font-weight:600;color:var(--text-main);font-size:.98rem;line-height:1.5}
.cms-item-title:hover{color:var(--accent)}
.cms-item-date{color:var(--text-muted);font-size:.85rem;flex-shrink:0}
.cms-empty{padding:40px;text-align:center;color:var(--text-muted);font-size:1rem}

/* 数据统计 */
.stats-section{
    background-size:cover;background-position:center;position:relative;
    padding:90px 0;
}
.stats-section::before{content:"";position:absolute;inset:0;background:linear-gradient(120deg,rgba(21,42,69,.92),rgba(30,58,95,.85))}
.stats-section .container{position:relative;z-index:2}
.stat-item{text-align:center;padding:30px 20px}
.stat-num{
    display:block;font-size:2.6rem;font-weight:800;color:#fff;
    line-height:1.2;margin-bottom:6px;letter-spacing:-1px;
}
.stat-label{font-size:.92rem;color:rgba(255,255,255,.8);letter-spacing:1px}

/* 流程 */
.process-step{
    background:var(--bg-white);border:1px solid var(--border-light);
    border-radius:var(--radius-lg);padding:32px 24px;height:100%;
    position:relative;transition:var(--transition);
}
.process-step:hover{box-shadow:var(--shadow-lg);transform:translateY(-4px)}
.step-num{
    font-size:2.4rem;font-weight:800;color:var(--accent);
    opacity:.25;display:block;line-height:1;margin-bottom:14px;
}
.process-step h3{font-size:1.15rem;font-weight:700;color:var(--primary);margin-bottom:10px}
.process-step p{color:var(--text-secondary);font-size:.9rem;line-height:1.7;margin:0}

/* FAQ */
.accordion{border-radius:var(--radius-lg);overflow:hidden}
.accordion-item{border:1px solid var(--border-light);border-bottom:none;background:var(--bg-white)}
.accordion-item:first-child{border-top-left-radius:var(--radius-lg);border-top-right-radius:var(--radius-lg)}
.accordion-item:last-child{border-bottom:1px solid var(--border-light);border-bottom-left-radius:var(--radius-lg);border-bottom-right-radius:var(--radius-lg)}
.accordion-button{
    padding:20px 26px;font-weight:700;font-size:1rem;color:var(--text-main);
    background:var(--bg-white);box-shadow:none;
}
.accordion-button:not(.collapsed){
    background:var(--accent-light);color:var(--primary);
    box-shadow:inset 0 -1px 0 rgba(14,165,164,.15);
}
.accordion-button:focus{box-shadow:none}
.accordion-body{padding:20px 26px;color:var(--text-secondary);font-size:.95rem;line-height:1.8}

/* CTA */
.cta-section{padding:100px 0}
.cta-box{
    background:linear-gradient(120deg,var(--primary),var(--primary-light));
    border-radius:calc(var(--radius-lg) + 8px);
    padding:70px 50px;text-align:center;position:relative;overflow:hidden;
}
.cta-box::after{
    content:"";position:absolute;right:-60px;top:-60px;width:220px;height:220px;
    border-radius:50%;background:rgba(14,165,164,.25);
}
.cta-box::before{
    content:"";position:absolute;left:-40px;bottom:-40px;width:160px;height:160px;
    border-radius:50%;background:rgba(255,255,255,.08);
}
.cta-box h2{color:#fff;font-size:2.1rem;font-weight:800;margin-bottom:18px;position:relative;z-index:2}
.cta-box p{color:rgba(255,255,255,.85);font-size:1.1rem;margin-bottom:36px;position:relative;z-index:2}
.cta-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;position:relative;z-index:2}

/* Footer */
.site-footer{background:var(--primary-dark);color:#fff;padding:80px 0 30px}
.footer-brand .brand-logo{color:#fff;font-size:1.5rem;font-weight:800;display:inline-block;margin-bottom:18px}
.footer-brand .brand-logo span{color:var(--accent)}
.footer-brand p{color:rgba(255,255,255,.65);font-size:.92rem;line-height:1.8;margin:0;max-width:280px}
.footer-links h3,.footer-info h3{font-size:1rem;font-weight:700;color:#fff;margin-bottom:20px}
.footer-links a{
    display:block;color:rgba(255,255,255,.65);font-size:.92rem;
    padding:6px 0;transition:var(--transition);
}
.footer-links a:hover{color:var(--accent);padding-left:6px}
.footer-info p{color:rgba(255,255,255,.65);font-size:.92rem;margin-bottom:8px;line-height:1.7}
.footer-bottom{
    border-top:1px solid rgba(255,255,255,.1);
    padding-top:24px;margin-top:50px;text-align:center;
}
.footer-bottom p{color:rgba(255,255,255,.55);font-size:.85rem;margin:0}

/* 响应式 */
@media(max-width:1200px){
    .hero{padding:100px 0}
    .section{padding:72px 0}
}
@media(max-width:991.98px){
    .site-wrapper{flex-direction:column}
    .sidebar{
        transform:translateX(-100%);
        box-shadow:var(--shadow-lg);
    }
    .sidebar-open{transform:translateX(0)}
    .mobile-header{display:flex}
    .mobile-overlay.show{
        display:block;position:fixed;inset:0;background:rgba(21,42,69,.4);
        z-index:1045;backdrop-filter:blur(2px);
    }
    .main-content{margin-left:0}
    .hero h1{font-size:2.4rem}
    .section-head h2{font-size:1.8rem}
}
@media(max-width:767.98px){
    .hero{padding:75px 0}
    .hero h1{font-size:2rem}
    .hero p{font-size:1rem}
    .section{padding:60px 0}
    .section-head{margin-bottom:40px}
    .cta-box{padding:50px 24px}
    .cta-box h2{font-size:1.7rem}
    .cms-item{flex-wrap:wrap;padding:16px 18px;gap:10px}
    .cms-item-title{flex-basis:100%;order:3}
}
@media(max-width:520px){
    .container{padding:0 16px}
    .hero h1{font-size:1.7rem}
    .hero-actions .btn{width:100%;justify-content:center}
    .stat-num{font-size:2rem}
    .cta-actions .btn{width:100%;justify-content:center}
    .footer-links{margin-bottom:30px}
}

:root{
    --primary:#1e3a5f;--primary-dark:#152a45;--primary-light:#2d5f8a;
    --accent:#0ea5a4;--accent-light:#d7f2f1;--accent-dark:#0b7f7e;
    --bg-body:#f5f7fb;--bg-white:#ffffff;--bg-light:#eef2f7;
    --text-main:#1e293b;--text-secondary:#5b6b7f;--text-muted:#8899aa;
    --border:#dfe4ec;--border-light:#edf0f4;
    --radius-sm:8px;--radius:14px;--radius-lg:20px;
    --shadow-xs:0 1px 2px rgba(16,24,40,.04);
    --shadow-sm:0 2px 8px rgba(16,24,40,.06);
    --shadow-md:0 8px 24px rgba(16,24,40,.08);
    --shadow-lg:0 16px 48px rgba(16,24,40,.12);
    --transition:all .3s ease;
    --sidebar-width:264px;
    --font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font-family);background:var(--bg-body);color:var(--text-main);line-height:1.7;-webkit-font-smoothing:antialiased}
a{text-decoration:none;color:inherit;transition:var(--transition)}
img{max-width:100%;height:auto}
button{font-family:inherit}
.site-wrapper{display:flex;min-height:100vh}
.sidebar{
    width:var(--sidebar-width);background:var(--bg-white);
    border-right:1px solid var(--border);
    position:fixed;top:0;left:0;bottom:0;z-index:1050;
    display:flex;flex-direction:column;
    padding:28px 20px 20px;
    transition:transform .35s ease;
}
.sidebar .brand-logo{display:inline-flex;align-items:center;font-size:1.6rem;font-weight:800;color:var(--primary);letter-spacing:-.5px}
.sidebar .brand-logo span{color:var(--accent)}
.side-nav{margin-top:42px;display:flex;flex-direction:column;gap:4px}
.side-nav .nav-link{
    display:flex;align-items:center;gap:12px;
    padding:13px 16px;border-radius:var(--radius);
    color:var(--text-secondary);font-size:.95rem;font-weight:600;
    transition:var(--transition);border-left:3px solid transparent;
}
.side-nav .nav-link i{width:20px;text-align:center;font-size:1.05rem}
.side-nav .nav-link:hover{background:var(--bg-light);color:var(--primary);transform:translateX(2px)}
.side-nav .nav-link.active{background:var(--accent-light);color:var(--primary);border-left-color:var(--accent)}
.sidebar-foot{margin-top:auto;padding-top:20px;border-top:1px solid var(--border-light)}
.sidebar-foot p{font-size:.8rem;color:var(--text-muted);margin:0;line-height:1.5}
.mobile-header{
    display:none;
    background:var(--bg-white);border-bottom:1px solid var(--border);
    padding:14px 20px;position:sticky;top:0;z-index:1060;
    align-items:center;justify-content:space-between;
}
.mobile-header .brand-logo{font-size:1.35rem;font-weight:800;color:var(--primary)}
.mobile-header .brand-logo span{color:var(--accent)}
.mobile-toggle{
    background:none;border:1px solid var(--border);border-radius:var(--radius-sm);
    width:42px;height:42px;display:flex;align-items:center;justify-content:center;
    font-size:1.2rem;color:var(--primary);cursor:pointer;
}
.mobile-overlay{display:none}
.sidebar-open{transform:translateX(0)!important}
.main-content{margin-left:var(--sidebar-width);flex:1;min-width:0}
.container{max-width:1240px;padding:0 24px}

/* 文章页 Banner */
.article-banner{
    background-size:cover;background-position:center;position:relative;
    padding:90px 0 70px;
}
.article-banner::before{content:"";position:absolute;inset:0;background:linear-gradient(120deg,rgba(21,42,69,.9),rgba(30,58,95,.75))}
.article-banner .container{position:relative;z-index:2}
.article-banner .cat-label{
    display:inline-block;background:var(--accent);color:#fff;
    font-size:.8rem;font-weight:700;padding:5px 14px;
    border-radius:50px;margin-bottom:16px;
}
.article-banner h1{
    color:#fff;font-size:2.6rem;font-weight:800;line-height:1.25;
    max-width:760px;margin-bottom:18px;
}
.article-banner .meta{
    color:rgba(255,255,255,.8);font-size:.9rem;
    display:flex;gap:20px;flex-wrap:wrap;
}
.article-banner .meta span{display:inline-flex;align-items:center;gap:6px}

/* 文章主体 */
.article-body{padding:80px 0 70px}
.article-card{
    background:var(--bg-white);border-radius:var(--radius-lg);
    border:1px solid var(--border-light);padding:56px;
    box-shadow:var(--shadow-sm);
}
.article-content{font-size:1.02rem;line-height:2;color:var(--text-main)}
.article-content h2,.article-content h3{
    color:var(--primary);font-weight:700;margin:40px 0 16px;
}
.article-content h2{font-size:1.6rem}
.article-content h3{font-size:1.25rem}
.article-content p{margin-bottom:20px}
.article-content ul,.article-content ol{padding-left:24px;margin-bottom:20px}
.article-content li{margin-bottom:8px}
.article-content img{border-radius:var(--radius);margin:24px 0}
.article-content blockquote{
    border-left:4px solid var(--accent);background:var(--bg-light);
    padding:16px 24px;margin:24px 0;border-radius:0 var(--radius) var(--radius) 0;
    color:var(--text-secondary);font-style:italic;
}
.article-content a{color:var(--accent);font-weight:600}
.article-content a:hover{text-decoration:underline}
.article-empty{
    background:var(--bg-white);border-radius:var(--radius-lg);
    border:1px solid var(--border-light);padding:70px 30px;
    text-align:center;
}
.article-empty h2{font-size:1.8rem;font-weight:800;color:var(--text-main);margin-bottom:14px}
.article-empty p{color:var(--text-secondary);margin-bottom:30px}

/* 返回区域 */
.article-back{padding:0 0 80px}
article-nav{display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap}

/* 按钮 */
.btn{
    padding:12px 26px;border-radius:50px;font-weight:700;font-size:.93rem;
    transition:var(--transition);display:inline-flex;align-items:center;gap:8px;
    border:none;cursor:pointer;
}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-dark);color:#fff;transform:translateY(-2px);box-shadow:0 8px 24px rgba(14,165,164,.35)}
.btn-outline{border:1.5px solid var(--accent);color:var(--accent);background:transparent}
.btn-outline:hover{background:var(--accent);color:#fff;transform:translateY(-2px)}
.btn-outline-light{border:1.5px solid rgba(255,255,255,.6);color:#fff;background:transparent}
.btn-outline-light:hover{background:rgba(255,255,255,.1);border-color:#fff;color:#fff}

/* 推荐 */
.related-card{
    background:var(--bg-white);border:1px solid var(--border-light);
    border-radius:var(--radius);padding:24px;
    transition:var(--transition);display:block;height:100%;
}
.related-card:hover{box-shadow:var(--shadow-md);transform:translateY(-4px)}
.related-card h3{font-size:1rem;font-weight:700;color:var(--primary);margin-bottom:10px;line-height:1.5}
.related-card p{font-size:.88rem;color:var(--text-secondary);margin:0;line-height:1.6}

/* Footer */
.site-footer{background:var(--primary-dark);color:#fff;padding:80px 0 30px}
.footer-brand .brand-logo{color:#fff;font-size:1.5rem;font-weight:800;display:inline-block;margin-bottom:18px}
.footer-brand .brand-logo span{color:var(--accent)}
.footer-brand p{color:rgba(255,255,255,.65);font-size:.92rem;line-height:1.8;margin:0;max-width:280px}
.footer-links h3,.footer-info h3{font-size:1rem;font-weight:700;color:#fff;margin-bottom:20px}
.footer-links a{display:block;color:rgba(255,255,255,.65);font-size:.92rem;padding:6px 0;transition:var(--transition)}
.footer-links a:hover{color:var(--accent);padding-left:6px}
.footer-info p{color:rgba(255,255,255,.65);font-size:.92rem;margin-bottom:8px;line-height:1.7}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:24px;margin-top:50px;text-align:center}
.footer-bottom p{color:rgba(255,255,255,.55);font-size:.85rem;margin:0}

@media(max-width:991.98px){
    .site-wrapper{flex-direction:column}
    .sidebar{transform:translateX(-100%);box-shadow:var(--shadow-lg)}
    .sidebar-open{transform:translateX(0)}
    .mobile-header{display:flex}
    .mobile-overlay.show{display:block;position:fixed;inset:0;background:rgba(21,42,69,.4);z-index:1045;backdrop-filter:blur(2px)}
    .main-content{margin-left:0}
    .article-banner h1{font-size:2rem}
}
@media(max-width:767.98px){
    .article-banner{padding:70px 0 50px}
    .article-banner h1{font-size:1.6rem}
    .article-body{padding:50px 0}
    .article-card{padding:30px 22px}
    .article-content{font-size:.96rem}
}
@media(max-width:520px){
    .container{padding:0 16px}
}

:root{
    --primary:#1e3a5f;--primary-dark:#152a45;--primary-light:#2d5f8a;
    --accent:#0ea5a4;--accent-light:#d7f2f1;--accent-dark:#0b7f7e;
    --bg-body:#f5f7fb;--bg-white:#ffffff;--bg-light:#eef2f7;
    --text-main:#1e293b;--text-secondary:#5b6b7f;--text-muted:#8899aa;
    --border:#dfe4ec;--border-light:#edf0f4;
    --radius-sm:8px;--radius:14px;--radius-lg:20px;
    --shadow-xs:0 1px 2px rgba(16,24,40,.04);
    --shadow-sm:0 2px 8px rgba(16,24,40,.06);
    --shadow-md:0 8px 24px rgba(16,24,40,.08);
    --shadow-lg:0 16px 48px rgba(16,24,40,.12);
    --transition:all .3s ease;
    --sidebar-width:264px;
    --font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font-family);background:var(--bg-body);color:var(--text-main);line-height:1.7;-webkit-font-smoothing:antialiased}
a{text-decoration:none;color:inherit;transition:var(--transition)}
img{max-width:100%;height:auto}
button{font-family:inherit}
.site-wrapper{display:flex;min-height:100vh}
.sidebar{width:var(--sidebar-width);background:var(--bg-white);border-right:1px solid var(--border);position:fixed;top:0;left:0;bottom:0;z-index:1050;display:flex;flex-direction:column;padding:28px 20px 20px;transition:transform .35s ease}
.sidebar .brand-logo{display:inline-flex;align-items:center;font-size:1.6rem;font-weight:800;color:var(--primary);letter-spacing:-.5px}
.sidebar .brand-logo span{color:var(--accent)}
.side-nav{margin-top:42px;display:flex;flex-direction:column;gap:4px}
.side-nav .nav-link{display:flex;align-items:center;gap:12px;padding:13px 16px;border-radius:var(--radius);color:var(--text-secondary);font-size:.95rem;font-weight:600;transition:var(--transition);border-left:3px solid transparent}
.side-nav .nav-link i{width:20px;text-align:center;font-size:1.05rem}
.side-nav .nav-link:hover{background:var(--bg-light);color:var(--primary);transform:translateX(2px)}
.side-nav .nav-link.active{background:var(--accent-light);color:var(--primary);border-left-color:var(--accent)}
.sidebar-foot{margin-top:auto;padding-top:20px;border-top:1px solid var(--border-light)}
.sidebar-foot p{font-size:.8rem;color:var(--text-muted);margin:0;line-height:1.5}
.mobile-header{display:none;background:var(--bg-white);border-bottom:1px solid var(--border);padding:14px 20px;position:sticky;top:0;z-index:1060;align-items:center;justify-content:space-between}
.mobile-header .brand-logo{font-size:1.35rem;font-weight:800;color:var(--primary)}
.mobile-header .brand-logo span{color:var(--accent)}
.mobile-toggle{background:none;border:1px solid var(--border);border-radius:var(--radius-sm);width:42px;height:42px;display:flex;align-items:center;justify-content:center;font-size:1.2rem;color:var(--primary);cursor:pointer}
.mobile-overlay{display:none}
.sidebar-open{transform:translateX(0)!important}
.main-content{margin-left:var(--sidebar-width);flex:1;min-width:0}
.container{max-width:1240px;padding:0 24px}

/* 分类页 Banner */
.category-banner{
    background-size:cover;background-position:center;position:relative;
    padding:110px 0 80px;
}
.category-banner::before{content:"";position:absolute;inset:0;background:linear-gradient(120deg,rgba(21,42,69,.92) 30%,rgba(14,165,164,.55) 100%)}
.category-banner .container{position:relative;z-index:2}
.category-banner .cat-tag{
    display:inline-block;background:var(--accent);color:#fff;
    font-size:.82rem;font-weight:700;padding:6px 16px;
    border-radius:50px;margin-bottom:18px;letter-spacing:.5px;
}
.category-banner h1{color:#fff;font-size:2.9rem;font-weight:800;line-height:1.2;max-width:640px;margin-bottom:20px}
.category-banner p{color:rgba(255,255,255,.9);font-size:1.1rem;max-width:520px;line-height:1.8;margin:0}

/* 分类页面通用板块 */
.section{padding:90px 0}
.section-light{background:var(--bg-white)}
.section-head{max-width:720px;margin-bottom:50px}
.section-head.center{margin:0 auto 50px;text-align:center}
.section-tag{display:inline-block;background:var(--accent-light);color:var(--accent-dark);font-size:.82rem;font-weight:700;padding:6px 16px;border-radius:50px;margin-bottom:16px;letter-spacing:.5px}
.section-head h2{font-size:2rem;font-weight:800;color:var(--text-main);line-height:1.3;margin-bottom:14px}
.section-head p{font-size:1.02rem;color:var(--text-secondary);line-height:1.8;margin:0}

/* 按钮 */
.btn{padding:12px 26px;border-radius:50px;font-weight:700;font-size:.93rem;transition:var(--transition);display:inline-flex;align-items:center;gap:8px;border:none;cursor:pointer}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-dark);color:#fff;transform:translateY(-2px);box-shadow:0 8px 24px rgba(14,165,164,.35)}
.btn-outline{border:1.5px solid var(--accent);color:var(--accent);background:transparent}
.btn-outline:hover{background:var(--accent);color:#fff;transform:translateY(-2px)}

/* 文章卡片 */
.article-card{
    background:var(--bg-white);border:1px solid var(--border-light);
    border-radius:var(--radius-lg);overflow:hidden;height:100%;
    transition:var(--transition);
}
.article-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-5px)}
.article-card img{width:100%;height:190px;object-fit:cover;display:block}
.article-card .card-body{padding:24px 22px}
.article-card .card-body h3{font-size:1.1rem;font-weight:700;color:var(--primary);margin-bottom:10px;line-height:1.5}
.article-card .card-body p{color:var(--text-secondary);font-size:.9rem;line-height:1.7;margin-bottom:16px}
.article-card .card-body .btn-text{color:var(--accent);font-weight:700;font-size:.88rem;display:inline-flex;align-items:center;gap:6px}
.article-card:hover .btn-text i{transform:translateX(4px)}
.article-card .btn-text i{transition:transform .3s ease}

/* 内容区块 */
.content-block{display:flex;gap:40px;align-items:center}
.content-block .content-img{flex:0 0 45%;border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-md)}
.content-block .content-img img{width:100%;display:block}
.content-block .content-text{flex:1}
.content-block h3{font-size:1.4rem;font-weight:700;color:var(--primary);margin-bottom:16px;line-height:1.4}
.content-block p{color:var(--text-secondary);font-size:.98rem;line-height:1.85;margin-bottom:16px}
.content-block ul{list-style:none;padding:0;margin:0}
.content-block ul li{padding:8px 0 8px 28px;position:relative;color:var(--text-secondary);font-size:.95rem;line-height:1.7}
.content-block ul li::before{content:"\f058";font-family:"Font Awesome 6 Free";font-weight:900;position:absolute;left:0;top:8px;color:var(--accent)}

/* 步骤教程 */
.step-card{
    display:flex;gap:20px;padding:28px;
    background:var(--bg-white);border:1px solid var(--border-light);
    border-radius:var(--radius-lg);margin-bottom:18px;
    transition:var(--transition);
}
.step-card:hover{box-shadow:var(--shadow-md);transform:translateX(6px)}
.step-card .step-icon{
    width:58px;height:58px;flex-shrink:0;
    background:var(--accent-light);color:var(--accent-dark);
    border-radius:var(--radius);display:flex;align-items:center;justify-content:center;
    font-size:1.4rem;font-weight:800;
}
.step-card h3{font-size:1.1rem;font-weight:700;color:var(--primary);margin-bottom:8px}
.step-card p{color:var(--text-secondary);font-size:.92rem;line-height:1.7;margin:0}

/* FAQ */
.accordion{border-radius:var(--radius-lg);overflow:hidden}
.accordion-item{border:1px solid var(--border-light);border-bottom:none;background:var(--bg-white)}
.accordion-item:first-child{border-top-left-radius:var(--radius-lg);border-top-right-radius:var(--radius-lg)}
.accordion-item:last-child{border-bottom:1px solid var(--border-light);border-bottom-left-radius:var(--radius-lg);border-bottom-right-radius:var(--radius-lg)}
.accordion-button{padding:18px 24px;font-weight:700;font-size:.97rem;color:var(--text-main);background:var(--bg-white);box-shadow:none}
.accordion-button:not(.collapsed){background:var(--accent-light);color:var(--primary);box-shadow:inset 0 -1px 0 rgba(14,165,164,.15)}
.accordion-button:focus{box-shadow:none}
.accordion-body{padding:18px 24px;color:var(--text-secondary);font-size:.93rem;line-height:1.8}

/* CTA */
.cta-section{padding:90px 0}
.cta-box{background:linear-gradient(120deg,var(--primary),var(--primary-light));border-radius:calc(var(--radius-lg) + 8px);padding:64px 50px;text-align:center;position:relative;overflow:hidden}
.cta-box::after{content:"";position:absolute;right:-60px;top:-60px;width:220px;height:220px;border-radius:50%;background:rgba(14,165,164,.25)}
.cta-box::before{content:"";position:absolute;left:-40px;bottom:-40px;width:160px;height:160px;border-radius:50%;background:rgba(255,255,255,.08)}
.cta-box h2{color:#fff;font-size:2rem;font-weight:800;margin-bottom:18px;position:relative;z-index:2}
.cta-box p{color:rgba(255,255,255,.85);font-size:1.05rem;margin-bottom:32px;position:relative;z-index:2}
.cta-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;position:relative;z-index:2}
.btn-light{background:#fff;color:var(--primary)}
.btn-light:hover{background:var(--bg-light);transform:translateY(-2px);box-shadow:var(--shadow-md)}

/* Footer */
.site-footer{background:var(--primary-dark);color:#fff;padding:80px 0 30px}
.footer-brand .brand-logo{color:#fff;font-size:1.5rem;font-weight:800;display:inline-block;margin-bottom:18px}
.footer-brand .brand-logo span{color:var(--accent)}
.footer-brand p{color:rgba(255,255,255,.65);font-size:.92rem;line-height:1.8;margin:0;max-width:280px}
.footer-links h3,.footer-info h3{font-size:1rem;font-weight:700;color:#fff;margin-bottom:20px}
.footer-links a{display:block;color:rgba(255,255,255,.65);font-size:.92rem;padding:6px 0;transition:var(--transition)}
.footer-links a:hover{color:var(--accent);padding-left:6px}
.footer-info p{color:rgba(255,255,255,.65);font-size:.92rem;margin-bottom:8px;line-height:1.7}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:24px;margin-top:50px;text-align:center}
.footer-bottom p{color:rgba(255,255,255,.55);font-size:.85rem;margin:0}

@media(max-width:991.98px){
    .site-wrapper{flex-direction:column}
    .sidebar{transform:translateX(-100%);box-shadow:var(--shadow-lg)}
    .sidebar-open{transform:translateX(0)}
    .mobile-header{display:flex}
    .mobile-overlay.show{display:block;position:fixed;inset:0;background:rgba(21,42,69,.4);z-index:1045;backdrop-filter:blur(2px)}
    .main-content{margin-left:0}
    .category-banner h1{font-size:2.2rem}
    .content-block{flex-direction:column}
    .content-block .content-img{flex:auto;width:100%}
}
@media(max-width:767.98px){
    .section{padding:60px 0}
    .category-banner{padding:80px 0 50px}
    .category-banner h1{font-size:1.8rem}
    .section-head h2{font-size:1.6rem}
    .cta-box{padding:48px 24px}
    .cta-box h2{font-size:1.6rem}
}
@media(max-width:520px){
    .container{padding:0 16px}
    .step-card{flex-direction:column}
    .cta-actions .btn{width:100%;justify-content:center}
}

:root{
    --primary:#1e3a5f;--primary-dark:#152a45;--primary-light:#2d5f8a;
    --accent:#0ea5a4;--accent-light:#d7f2f1;--accent-dark:#0b7f7e;
    --bg-body:#f5f7fb;--bg-white:#ffffff;--bg-light:#eef2f7;
    --text-main:#1e293b;--text-secondary:#5b6b7f;--text-muted:#8899aa;
    --border:#dfe4ec;--border-light:#edf0f4;
    --radius-sm:8px;--radius:14px;--radius-lg:20px;
    --shadow-xs:0 1px 2px rgba(16,24,40,.04);
    --shadow-sm:0 2px 8px rgba(16,24,40,.06);
    --shadow-md:0 8px 24px rgba(16,24,40,.08);
    --shadow-lg:0 16px 48px rgba(16,24,40,.12);
    --transition:all .3s ease;
    --sidebar-width:264px;
    --font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font-family);background:var(--bg-body);color:var(--text-main);line-height:1.7;-webkit-font-smoothing:antialiased}
a{text-decoration:none;color:inherit;transition:var(--transition)}
img{max-width:100%;height:auto}
button{font-family:inherit}
.site-wrapper{display:flex;min-height:100vh}
.sidebar{width:var(--sidebar-width);background:var(--bg-white);border-right:1px solid var(--border);position:fixed;top:0;left:0;bottom:0;z-index:1050;display:flex;flex-direction:column;padding:28px 20px 20px;transition:transform .35s ease}
.sidebar .brand-logo{display:inline-flex;align-items:center;font-size:1.6rem;font-weight:800;color:var(--primary);letter-spacing:-.5px}
.sidebar .brand-logo span{color:var(--accent)}
.side-nav{margin-top:42px;display:flex;flex-direction:column;gap:4px}
.side-nav .nav-link{display:flex;align-items:center;gap:12px;padding:13px 16px;border-radius:var(--radius);color:var(--text-secondary);font-size:.95rem;font-weight:600;transition:var(--transition);border-left:3px solid transparent}
.side-nav .nav-link i{width:20px;text-align:center;font-size:1.05rem}
.side-nav .nav-link:hover{background:var(--bg-light);color:var(--primary);transform:translateX(2px)}
.side-nav .nav-link.active{background:var(--accent-light);color:var(--primary);border-left-color:var(--accent)}
.sidebar-foot{margin-top:auto;padding-top:20px;border-top:1px solid var(--border-light)}
.sidebar-foot p{font-size:.8rem;color:var(--text-muted);margin:0;line-height:1.5}
.mobile-header{display:none;background:var(--bg-white);border-bottom:1px solid var(--border);padding:14px 20px;position:sticky;top:0;z-index:1060;align-items:center;justify-content:space-between}
.mobile-header .brand-logo{font-size:1.35rem;font-weight:800;color:var(--primary)}
.mobile-header .brand-logo span{color:var(--accent)}
.mobile-toggle{background:none;border:1px solid var(--border);border-radius:var(--radius-sm);width:42px;height:42px;display:flex;align-items:center;justify-content:center;font-size:1.2rem;color:var(--primary);cursor:pointer}
.mobile-overlay{display:none}
.sidebar-open{transform:translateX(0)!important}
.main-content{margin-left:var(--sidebar-width);flex:1;min-width:0}
.container{max-width:1240px;padding:0 24px}
.category-banner{background-size:cover;background-position:center;position:relative;padding:110px 0 80px}
.category-banner::before{content:"";position:absolute;inset:0;background:linear-gradient(120deg,rgba(21,42,69,.92) 30%,rgba(14,165,164,.55) 100%)}
.category-banner .container{position:relative;z-index:2}
.category-banner .cat-tag{display:inline-block;background:var(--accent);color:#fff;font-size:.82rem;font-weight:700;padding:6px 16px;border-radius:50px;margin-bottom:18px;letter-spacing:.5px}
.category-banner h1{color:#fff;font-size:2.9rem;font-weight:800;line-height:1.2;max-width:640px;margin-bottom:20px}
.category-banner p{color:rgba(255,255,255,.9);font-size:1.1rem;max-width:520px;line-height:1.8;margin:0}
.section{padding:90px 0}
.section-light{background:var(--bg-white)}
.section-head{max-width:720px;margin-bottom:50px}
.section-head.center{margin:0 auto 50px;text-align:center}
.section-tag{display:inline-block;background:var(--accent-light);color:var(--accent-dark);font-size:.82rem;font-weight:700;padding:6px 16px;border-radius:50px;margin-bottom:16px;letter-spacing:.5px}
.section-head h2{font-size:2rem;font-weight:800;color:var(--text-main);line-height:1.3;margin-bottom:14px}
.section-head p{font-size:1.02rem;color:var(--text-secondary);line-height:1.8;margin:0}
.btn{padding:12px 26px;border-radius:50px;font-weight:700;font-size:.93rem;transition:var(--transition);display:inline-flex;align-items:center;gap:8px;border:none;cursor:pointer}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-dark);color:#fff;transform:translateY(-2px);box-shadow:0 8px 24px rgba(14,165,164,.35)}
.btn-outline{border:1.5px solid var(--accent);color:var(--accent);background:transparent}
.btn-outline:hover{background:var(--accent);color:#fff;transform:translateY(-2px)}
.btn-light{background:#fff;color:var(--primary)}
.btn-light:hover{background:var(--bg-light);transform:translateY(-2px);box-shadow:var(--shadow-md)}
.article-card{background:var(--bg-white);border:1px solid var(--border-light);border-radius:var(--radius-lg);overflow:hidden;height:100%;transition:var(--transition)}
.article-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-5px)}
.article-card img{width:100%;height:190px;object-fit:cover;display:block}
.article-card .card-body{padding:24px 22px}
.article-card .card-body h3{font-size:1.1rem;font-weight:700;color:var(--primary);margin-bottom:10px;line-height:1.5}
.article-card .card-body p{color:var(--text-secondary);font-size:.9rem;line-height:1.7;margin-bottom:16px}
.article-card .card-body .btn-text{color:var(--accent);font-weight:700;font-size:.88rem;display:inline-flex;align-items:center;gap:6px}
.article-card:hover .btn-text i{transform:translateX(4px)}
.article-card .btn-text i{transition:transform .3s ease}
.stat-card{background:var(--bg-white);border:1px solid var(--border-light);border-radius:var(--radius-lg);padding:32px 24px;text-align:center;height:100%;transition:var(--transition)}
.stat-card:hover{box-shadow:var(--shadow-md);transform:translateY(-4px)}
.stat-card .stat-value{font-size:2.2rem;font-weight:800;color:var(--primary);line-height:1.2;display:block;margin-bottom:8px}
.stat-card .stat-label{font-size:.9rem;color:var(--text-secondary)}
.tip-card{background:var(--bg-white);border:1px solid var(--border-light);border-radius:var(--radius-lg);padding:28px 24px;height:100%;transition:var(--transition)}
.tip-card:hover{box-shadow:var(--shadow-md);transform:translateY(-4px)}
.tip-card i{font-size:1.8rem;color:var(--accent);display:inline-flex;align-items:center;justify-content:center;width:60px;height:60px;border-radius:50%;background:var(--accent-light);margin-bottom:18px}
.tip-card h3{font-size:1.1rem;font-weight:700;color:var(--primary);margin-bottom:10px}
.tip-card p{color:var(--text-secondary);font-size:.9rem;line-height:1.7;margin:0}
.accordion{border-radius:var(--radius-lg);overflow:hidden}
.accordion-item{border:1px solid var(--border-light);border-bottom:none;background:var(--bg-white)}
.accordion-item:first-child{border-top-left-radius:var(--radius-lg);border-top-right-radius:var(--radius-lg)}
.accordion-item:last-child{border-bottom:1px solid var(--border-light);border-bottom-left-radius:var(--radius-lg);border-bottom-right-radius:var(--radius-lg)}
.accordion-button{padding:18px 24px;font-weight:700;font-size:.97rem;color:var(--text-main);background:var(--bg-white);box-shadow:none}
.accordion-button:not(.collapsed){background:var(--accent-light);color:var(--primary);box-shadow:inset 0 -1px 0 rgba(14,165,164,.15)}
.accordion-button:focus{box-shadow:none}
.accordion-body{padding:18px 24px;color:var(--text-secondary);font-size:.93rem;line-height:1.8}
.cta-section{padding:90px 0}
.cta-box{background:linear-gradient(120deg,var(--primary),var(--primary-light));border-radius:calc(var(--radius-lg) + 8px);padding:64px 50px;text-align:center;position:relative;overflow:hidden}
.cta-box::after{content:"";position:absolute;right:-60px;top:-60px;width:220px;height:220px;border-radius:50%;background:rgba(14,165,164,.25)}
.cta-box::before{content:"";position:absolute;left:-40px;bottom:-40px;width:160px;height:160px;border-radius:50%;background:rgba(255,255,255,.08)}
.cta-box h2{color:#fff;font-size:2rem;font-weight:800;margin-bottom:18px;position:relative;z-index:2}
.cta-box p{color:rgba(255,255,255,.85);font-size:1.05rem;margin-bottom:32px;position:relative;z-index:2}
.cta-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;position:relative;z-index:2}
.btn-outline-light{border:1.5px solid rgba(255,255,255,.6);color:#fff;background:transparent}
.btn-outline-light:hover{background:rgba(255,255,255,.1);border-color:#fff;color:#fff}
.site-footer{background:var(--primary-dark);color:#fff;padding:80px 0 30px}
.footer-brand .brand-logo{color:#fff;font-size:1.5rem;font-weight:800;display:inline-block;margin-bottom:18px}
.footer-brand .brand-logo span{color:var(--accent)}
.footer-brand p{color:rgba(255,255,255,.65);font-size:.92rem;line-height:1.8;margin:0;max-width:280px}
.footer-links h3,.footer-info h3{font-size:1rem;font-weight:700;color:#fff;margin-bottom:20px}
.footer-links a{display:block;color:rgba(255,255,255,.65);font-size:.92rem;padding:6px 0;transition:var(--transition)}
.footer-links a:hover{color:var(--accent);padding-left:6px}
.footer-info p{color:rgba(255,255,255,.65);font-size:.92rem;margin-bottom:8px;line-height:1.7}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:24px;margin-top:50px;text-align:center}
.footer-bottom p{color:rgba(255,255,255,.55);font-size:.85rem;margin:0}
@media(max-width:991.98px){
    .site-wrapper{flex-direction:column}
    .sidebar{transform:translateX(-100%);box-shadow:var(--shadow-lg)}
    .sidebar-open{transform:translateX(0)}
    .mobile-header{display:flex}
    .mobile-overlay.show{display:block;position:fixed;inset:0;background:rgba(21,42,69,.4);z-index:1045;backdrop-filter:blur(2px)}
    .main-content{margin-left:0}
    .category-banner h1{font-size:2.2rem}
}
@media(max-width:767.98px){
    .section{padding:60px 0}
    .category-banner{padding:80px 0 50px}
    .category-banner h1{font-size:1.8rem}
    .section-head h2{font-size:1.6rem}
    .cta-box{padding:48px 24px}
    .cta-box h2{font-size:1.6rem}
}
@media(max-width:520px){
    .container{padding:0 16px}
    .cta-actions .btn{width:100%;justify-content:center}
}

:root{
    --primary:#1e3a5f;--primary-dark:#152a45;--primary-light:#2d5f8a;
    --accent:#0ea5a4;--accent-light:#d7f2f1;--accent-dark:#0b7f7e;
    --bg-body:#f5f7fb;--bg-white:#ffffff;--bg-light:#eef2f7;
    --text-main:#1e293b;--text-secondary:#5b6b7f;--text-muted:#8899aa;
    --border:#dfe4ec;--border-light:#edf0f4;
    --radius-sm:8px;--radius:14px;--radius-lg:20px;
    --shadow-xs:0 1px 2px rgba(16,24,40,.04);
    --shadow-sm:0 2px 8px rgba(16,24,40,.06);
    --shadow-md:0 8px 24px rgba(16,24,40,.08);
    --shadow-lg:0 16px 48px rgba(16,24,40,.12);
    --transition:all .3s ease;
    --sidebar-width:264px;
    --font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font-family);background:var(--bg-body);color:var(--text-main);line-height:1.7;-webkit-font-smoothing:antialiased}
a{text-decoration:none;color:inherit;transition:var(--transition)}
img{max-width:100%;height:auto}
button{font-family:inherit}
.site-wrapper{display:flex;min-height:100vh}
.sidebar{width:var(--sidebar-width);background:var(--bg-white);border-right:1px solid var(--border);position:fixed;top:0;left:0;bottom:0;z-index:1050;display:flex;flex-direction:column;padding:28px 20px 20px;transition:transform .35s ease}
.sidebar .brand-logo{display:inline-flex;align-items:center;font-size:1.6rem;font-weight:800;color:var(--primary);letter-spacing:-.5px}
.sidebar .brand-logo span{color:var(--accent)}
.side-nav{margin-top:42px;display:flex;flex-direction:column;gap:4px}
.side-nav .nav-link{display:flex;align-items:center;gap:12px;padding:13px 16px;border-radius:var(--radius);color:var(--text-secondary);font-size:.95rem;font-weight:600;transition:var(--transition);border-left:3px solid transparent}
.side-nav .nav-link i{width:20px;text-align:center;font-size:1.05rem}
.side-nav .nav-link:hover{background:var(--bg-light);color:var(--primary);transform:translateX(2px)}
.side-nav .nav-link.active{background:var(--accent-light);color:var(--primary);border-left-color:var(--accent)}
.sidebar-foot{margin-top:auto;padding-top:20px;border-top:1px solid var(--border-light)}
.sidebar-foot p{font-size:.8rem;color:var(--text-muted);margin:0;line-height:1.5}
.mobile-header{display:none;background:var(--bg-white);border-bottom:1px solid var(--border);padding:14px 20px;position:sticky;top:0;z-index:1060;align-items:center;justify-content:space-between}
.mobile-header .brand-logo{font-size:1.35rem;font-weight:800;color:var(--primary)}
.mobile-header .brand-logo span{color:var(--accent)}
.mobile-toggle{background:none;border:1px solid var(--border);border-radius:var(--radius-sm);width:42px;height:42px;display:flex;align-items:center;justify-content:center;font-size:1.2rem;color:var(--primary);cursor:pointer}
.mobile-overlay{display:none}
.sidebar-open{transform:translateX(0)!important}
.main-content{margin-left:var(--sidebar-width);flex:1;min-width:0}
.container{max-width:1240px;padding:0 24px}
.category-banner{background-size:cover;background-position:center;position:relative;padding:110px 0 80px}
.category-banner::before{content:"";position:absolute;inset:0;background:linear-gradient(120deg,rgba(21,42,69,.92) 30%,rgba(14,165,164,.55) 100%)}
.category-banner .container{position:relative;z-index:2}
.category-banner .cat-tag{display:inline-block;background:var(--accent);color:#fff;font-size:.82rem;font-weight:700;padding:6px 16px;border-radius:50px;margin-bottom:18px;letter-spacing:.5px}
.category-banner h1{color:#fff;font-size:2.9rem;font-weight:800;line-height:1.2;max-width:640px;margin-bottom:20px}
.category-banner p{color:rgba(255,255,255,.9);font-size:1.1rem;max-width:520px;line-height:1.8;margin:0}
.section{padding:90px 0}
.section-light{background:var(--bg-white)}
.section-head{max-width:720px;margin-bottom:50px}
.section-head.center{margin:0 auto 50px;text-align:center}
.section-tag{display:inline-block;background:var(--accent-light);color:var(--accent-dark);font-size:.82rem;font-weight:700;padding:6px 16px;border-radius:50px;margin-bottom:16px;letter-spacing:.5px}
.section-head h2{font-size:2rem;font-weight:800;color:var(--text-main);line-height:1.3;margin-bottom:14px}
.section-head p{font-size:1.02rem;color:var(--text-secondary);line-height:1.8;margin:0}
.btn{padding:12px 26px;border-radius:50px;font-weight:700;font-size:.93rem;transition:var(--transition);display:inline-flex;align-items:center;gap:8px;border:none;cursor:pointer}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-dark);color:#fff;transform:translateY(-2px);box-shadow:0 8px 24px rgba(14,165,164,.35)}
.btn-outline{border:1.5px solid var(--accent);color:var(--accent);background:transparent}
.btn-outline:hover{background:var(--accent);color:#fff;transform:translateY(-2px)}
.btn-light{background:#fff;color:var(--primary)}
.btn-light:hover{background:var(--bg-light);transform:translateY(-2px);box-shadow:var(--shadow-md)}
.btn-outline-light{border:1.5px solid rgba(255,255,255,.6);color:#fff;background:transparent}
.btn-outline-light:hover{background:rgba(255,255,255,.1);border-color:#fff;color:#fff}
.article-card{background:var(--bg-white);border:1px solid var(--border-light);border-radius:var(--radius-lg);overflow:hidden;height:100%;transition:var(--transition)}
.article-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-5px)}
.article-card img{width:100%;height:190px;object-fit:cover;display:block}
.article-card .card-body{padding:24px 22px}
.article-card .card-body h3{font-size:1.1rem;font-weight:700;color:var(--primary);margin-bottom:10px;line-height:1.5}
.article-card .card-body p{color:var(--text-secondary);font-size:.9rem;line-height:1.7;margin-bottom:16px}
.article-card .card-body .btn-text{color:var(--accent);font-weight:700;font-size:.88rem;display:inline-flex;align-items:center;gap:6px}
.article-card:hover .btn-text i{transform:translateX(4px)}
.article-card .btn-text i{transition:transform .3s ease}
.check-card{background:var(--bg-white);border:1px solid var(--border-light);border-radius:var(--radius-lg);padding:32px 28px;height:100%;transition:var(--transition)}
.check-card:hover{box-shadow:var(--shadow-md);transform:translateY(-4px)}
.check-card .check-icon{width:48px;height:48px;background:var(--accent-light);color:var(--accent-dark);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1.2rem;margin-bottom:18px}
.check-card h3{font-size:1.1rem;font-weight:700;color:var(--primary);margin-bottom:10px}
.check-card p{color:var(--text-secondary);font-size:.9rem;line-height:1.7;margin:0}
.security-card{background:var(--bg-white);border:1px solid var(--border-light);border-radius:var(--radius-lg);padding:30px 26px;height:100%;transition:var(--transition)}
.security-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-4px)}
.security-card i{font-size:1.9rem;color:var(--accent);margin-bottom:16px;display:inline-block}
.security-card h3{font-size:1.15rem;font-weight:700;color:var(--primary);margin-bottom:10px}
.security-card p{color:var(--text-secondary);font-size:.9rem;line-height:1.75;margin:0}
.accordion{border-radius:var(--radius-lg);overflow:hidden}
.accordion-item{border:1px solid var(--border-light);border-bottom:none;background:var(--bg-white)}
.accordion-item:first-child{border-top-left-radius:var(--radius-lg);border-top-right-radius:var(--radius-lg)}
.accordion-item:last-child{border-bottom:1px solid var(--border-light);border-bottom-left-radius:var(--radius-lg);border-bottom-right-radius:var(--radius-lg)}
.accordion-button{padding:18px 24px;font-weight:700;font-size:.97rem;color:var(--text-main);background:var(--bg-white);box-shadow:none}
.accordion-button:not(.collapsed){background:var(--accent-light);color:var(--primary);box-shadow:inset 0 -1px 0 rgba(14,165,164,.15)}
.accordion-button:focus{box-shadow:none}
.accordion-body{padding:18px 24px;color:var(--text-secondary);font-size:.93rem;line-height:1.8}
.cta-section{padding:90px 0}
.cta-box{background:linear-gradient(120deg,var(--primary),var(--primary-light));border-radius:calc(var(--radius-lg) + 8px);padding:64px 50px;text-align:center;position:relative;overflow:hidden}
.cta-box::after{content:"";position:absolute;right:-60px;top:-60px;width:220px;height:220px;border-radius:50%;background:rgba(14,165,164,.25)}
.cta-box::before{content:"";position:absolute;left:-40px;bottom:-40px;width:160px;height:160px;border-radius:50%;background:rgba(255,255,255,.08)}
.cta-box h2{color:#fff;font-size:2rem;font-weight:800;margin-bottom:18px;position:relative;z-index:2}
.cta-box p{color:rgba(255,255,255,.85);font-size:1.05rem;margin-bottom:32px;position:relative;z-index:2}
.cta-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;position:relative;z-index:2}
.site-footer{background:var(--primary-dark);color:#fff;padding:80px 0 30px}
.footer-brand .brand-logo{color:#fff;font-size:1.5rem;font-weight:800;display:inline-block;margin-bottom:18px}
.footer-brand .brand-logo span{color:var(--accent)}
.footer-brand p{color:rgba(255,255,255,.65);font-size:.92rem;line-height:1.8;margin:0;max-width:280px}
.footer-links h3,.footer-info h3{font-size:1rem;font-weight:700;color:#fff;margin-bottom:20px}
.footer-links a{display:block;color:rgba(255,255,255,.65);font-size:.92rem;padding:6px 0;transition:var(--transition)}
.footer-links a:hover{color:var(--accent);padding-left:6px}
.footer-info p{color:rgba(255,255,255,.65);font-size:.92rem;margin-bottom:8px;line-height:1.7}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:24px;margin-top:50px;text-align:center}
.footer-bottom p{color:rgba(255,255,255,.55);font-size:.85rem;margin:0}
@media(max-width:991.98px){
    .site-wrapper{flex-direction:column}
    .sidebar{transform:translateX(-100%);box-shadow:var(--shadow-lg)}
    .sidebar-open{transform:translateX(0)}
    .mobile-header{display:flex}
    .mobile-overlay.show{display:block;position:fixed;inset:0;background:rgba(21,42,69,.4);z-index:1045;backdrop-filter:blur(2px)}
    .main-content{margin-left:0}
    .category-banner h1{font-size:2.2rem}
}
@media(max-width:767.98px){
    .section{padding:60px 0}
    .category-banner{padding:80px 0 50px}
    .category-banner h1{font-size:1.8rem}
    .section-head h2{font-size:1.6rem}
    .cta-box{padding:48px 24px}
    .cta-box h2{font-size:1.6rem}
}
@media(max-width:520px){
    .container{padding:0 16px}
    .cta-actions .btn{width:100%;justify-content:center}
}

/* roulang page: category1 */
:root {
            --primary: #0f4c81;
            --primary-dark: #0a3a63;
            --primary-light: #dbe8f5;
            --accent: #f0a500;
            --accent-light: #fff4e0;
            --bg: #f6f8fc;
            --bg-white: #ffffff;
            --text: #1a2a3a;
            --text-muted: #6b7a8c;
            --border: #e3e8f0;
            --radius: 18px;
            --radius-sm: 12px;
            --shadow: 0 8px 30px rgba(15, 76, 129, 0.08);
            --shadow-hover: 0 14px 40px rgba(15, 76, 129, 0.16);
            --space-section: 92px;
            --space-element: 36px;
            --font-head: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            --font-body: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-body);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }

        body.no-scroll {
            overflow: hidden;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s ease;
        }

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

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

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5 {
            font-family: var(--font-head);
            font-weight: 700;
            line-height: 1.25;
            color: var(--text);
        }

        .container {
            max-width: 1200px;
            padding-left: 24px;
            padding-right: 24px;
        }

        .section-pad {
            padding: var(--space-section) 0;
        }

        .eyebrow {
            display: inline-block;
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 0.08em;
            color: var(--accent);
            text-transform: uppercase;
            background: var(--accent-light);
            border-radius: 100px;
            padding: 6px 16px;
            margin-bottom: 16px;
        }

        .section-head {
            text-align: center;
            max-width: 680px;
            margin: 0 auto 56px;
        }

        .section-head h2 {
            font-size: 34px;
            margin-bottom: 16px;
        }

        .section-head p {
            color: var(--text-muted);
            font-size: 17px;
        }

        /* ===== 左侧导航布局 ===== */
        .site-wrapper {
            display: flex;
            min-height: 100vh;
        }

        .site-sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: 262px;
            height: 100vh;
            background: var(--primary);
            background-image: linear-gradient(160deg, #0f4c81 0%, #0a3a63 100%);
            z-index: 1050;
            display: flex;
            flex-direction: column;
            transition: transform 0.35s ease;
        }

        .sidebar-inner {
            display: flex;
            flex-direction: column;
            height: 100%;
            padding: 30px 22px 24px;
            overflow-y: auto;
        }

        .sidebar-brand {
            padding-bottom: 26px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.12);
            margin-bottom: 18px;
        }

        .brand-logo {
            display: inline-flex;
            align-items: center;
            font-size: 26px;
            font-weight: 800;
            color: #ffffff;
            letter-spacing: -0.02em;
            line-height: 1.2;
            gap: 2px;
        }

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

        .brand-logo:hover {
            color: #ffffff;
            opacity: 0.9;
        }

        .side-nav {
            display: flex;
            flex-direction: column;
            gap: 6px;
            margin-top: 8px;
            flex: 1;
        }

        .side-nav .nav-link {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 13px 18px;
            border-radius: var(--radius-sm);
            color: rgba(255, 255, 255, 0.78);
            font-size: 15px;
            font-weight: 600;
            transition: background 0.25s, color 0.25s, transform 0.2s;
            border: 1px solid transparent;
        }

        .side-nav .nav-link i {
            width: 20px;
            text-align: center;
            font-size: 16px;
            color: rgba(255, 255, 255, 0.6);
            transition: color 0.25s;
        }

        .side-nav .nav-link:hover {
            background: rgba(255, 255, 255, 0.1);
            color: #ffffff;
            transform: translateX(3px);
        }

        .side-nav .nav-link:hover i {
            color: var(--accent);
        }

        .side-nav .nav-link.active {
            background: rgba(255, 255, 255, 0.14);
            color: #ffffff;
            border-color: rgba(255, 255, 255, 0.18);
            box-shadow: 0 4px 18px rgba(0, 0, 0, 0.18);
        }

        .side-nav .nav-link.active i {
            color: var(--accent);
        }

        .sidebar-foot {
            margin-top: 20px;
            padding: 18px 14px;
            background: rgba(255, 255, 255, 0.07);
            border-radius: var(--radius-sm);
            border: 1px solid rgba(255, 255, 255, 0.09);
        }

        .sidebar-foot p {
            display: flex;
            align-items: center;
            gap: 8px;
            color: rgba(255, 255, 255, 0.7);
            font-size: 13px;
            line-height: 1.5;
        }

        .sidebar-foot i {
            color: var(--accent);
            font-size: 15px;
        }

        .sidebar-close {
            display: none;
            position: absolute;
            top: 20px;
            right: 20px;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
            font-size: 16px;
            cursor: pointer;
            align-items: center;
            justify-content: center;
        }

        .sidebar-overlay {
            position: fixed;
            inset: 0;
            background: rgba(10, 30, 50, 0.5);
            z-index: 1040;
            opacity: 0;
            visibility: hidden;
            transition: opacity 0.3s, visibility 0.3s;
        }

        .sidebar-overlay.show {
            opacity: 1;
            visibility: visible;
        }

        /* ===== 主内容区 ===== */
        .main-content {
            margin-left: 262px;
            flex: 1;
            min-width: 0;
        }

        .mobile-header {
            display: none;
            position: sticky;
            top: 0;
            z-index: 1030;
            align-items: center;
            justify-content: space-between;
            padding: 14px 20px;
            background: var(--primary);
            box-shadow: 0 4px 20px rgba(10, 58, 99, 0.25);
        }

        .mobile-header .brand-logo {
            font-size: 22px;
        }

        .mobile-toggle {
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: rgba(255, 255, 255, 0.14);
            color: #fff;
            font-size: 18px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: background 0.25s;
        }

        .mobile-toggle:hover {
            background: rgba(255, 255, 255, 0.24);
        }

        .mobile-toggle:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

        /* ===== Hero ===== */
        .page-hero {
            position: relative;
            background-size: cover;
            background-position: center;
            padding: 120px 0 104px;
            text-align: center;
            color: #fff;
            overflow: hidden;
        }

        .page-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 76, 129, 0.86) 0%, rgba(10, 58, 99, 0.72) 100%);
            z-index: 1;
        }

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

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.16);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.28);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            padding: 7px 18px;
            border-radius: 100px;
            margin-bottom: 22px;
        }

        .hero-badge i {
            color: var(--accent);
        }

        .page-hero h1 {
            font-size: 46px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 20px;
            letter-spacing: -0.02em;
        }

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

        .page-hero p {
            max-width: 620px;
            margin: 0 auto;
            font-size: 17px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.88);
        }

        .hero-meta {
            margin-top: 30px;
            display: flex;
            justify-content: center;
            gap: 14px;
            flex-wrap: wrap;
        }

        .hero-meta .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.18);
            padding: 8px 18px;
            border-radius: 100px;
            font-size: 14px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.9);
        }

        .hero-meta .meta-item i {
            color: var(--accent);
        }

        /* ===== 分类简介 ===== */
        .category-intro {
            background: var(--bg-white);
        }

        .intro-visual {
            position: relative;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            height: 100%;
            min-height: 300px;
        }

        .intro-visual img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .intro-visual::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(15, 76, 129, 0.18) 0%, transparent 60%);
        }

        .intro-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 24px;
        }

        .tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 7px 16px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            border-radius: 100px;
            transition: all 0.25s;
        }

        .tag i {
            font-size: 13px;
        }

        .tag:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(15, 76, 129, 0.2);
        }

        /* ===== 核心技巧卡片 ===== */
        .tips-section {
            background: var(--bg);
        }

        .tip-card {
            background: var(--bg-white);
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            transition: transform 0.3s, box-shadow 0.3s;
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .tip-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }

        .tip-card .tip-img {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 10;
        }

        .tip-card .tip-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s;
        }

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

        .tip-card .tip-img::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(10, 58, 99, 0.25) 0%, transparent 55%);
        }

        .tip-icon {
            position: absolute;
            left: 18px;
            bottom: -22px;
            width: 48px;
            height: 48px;
            background: var(--accent);
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            box-shadow: 0 8px 20px rgba(240, 165, 0, 0.35);
            z-index: 2;
        }

        .tip-body {
            padding: 32px 24px 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .tip-body .card-tag {
            display: inline-block;
            align-self: flex-start;
            font-size: 12px;
            font-weight: 700;
            color: var(--primary);
            background: var(--primary-light);
            padding: 4px 14px;
            border-radius: 100px;
            margin-bottom: 12px;
            letter-spacing: 0.04em;
        }

        .tip-body h3 {
            font-size: 18px;
            margin-bottom: 10px;
            line-height: 1.4;
        }

        .tip-body p {
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.7;
            flex: 1;
        }

        .text-link {
            margin-top: 18px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-weight: 600;
            font-size: 14px;
            color: var(--primary);
            transition: gap 0.25s, color 0.25s;
        }

        .text-link:hover {
            color: var(--accent);
            gap: 12px;
        }

        /* ===== 流程板块 ===== */
        .process-section {
            background: var(--primary);
            background-image: linear-gradient(150deg, #0f4c81 0%, #0a3a63 100%);
            color: #fff;
        }

        .process-section .section-head h2 {
            color: #fff;
        }

        .process-section .section-head p {
            color: rgba(255, 255, 255, 0.75);
        }

        .process-section .eyebrow {
            background: rgba(255, 255, 255, 0.16);
            color: var(--accent);
        }

        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .process-item {
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.14);
            border-radius: var(--radius);
            padding: 30px 26px;
            backdrop-filter: blur(6px);
            transition: background 0.3s, transform 0.3s;
            position: relative;
        }

        .process-item:hover {
            background: rgba(255, 255, 255, 0.13);
            transform: translateY(-4px);
        }

        .process-num {
            font-size: 42px;
            font-weight: 800;
            color: var(--accent);
            opacity: 0.55;
            line-height: 1;
            display: block;
            margin-bottom: 16px;
        }

        .process-item h3 {
            color: #fff;
            font-size: 19px;
            margin-bottom: 10px;
        }

        .process-item p {
            color: rgba(255, 255, 255, 0.72);
            font-size: 14px;
            line-height: 1.7;
        }

        .process-line {
            position: absolute;
            top: 50%;
            right: -24px;
            width: 24px;
            height: 2px;
            background: rgba(255, 255, 255, 0.25);
        }

        .process-item:last-child .process-line {
            display: none;
        }

        /* ===== 数据指标 ===== */
        .metrics-section {
            background: var(--bg-white);
        }

        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .metric-card {
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 34px 28px;
            text-align: center;
            transition: transform 0.3s, box-shadow 0.3s;
        }

        .metric-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-hover);
        }

        .metric-value {
            font-size: 46px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.1;
            margin-bottom: 10px;
        }

        .metric-value small {
            font-size: 20px;
            font-weight: 700;
            color: var(--accent);
        }

        .metric-label {
            font-size: 16px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 8px;
        }

        .metric-card p {
            color: var(--text-muted);
            font-size: 13px;
            line-height: 1.6;
        }

        /* ===== 工具清单 ===== */
        .tools-section {
            background: var(--bg);
        }

        .tools-list {
            max-width: 820px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .tool-item {
            display: flex;
            align-items: center;
            gap: 20px;
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 22px 26px;
            transition: transform 0.3s, box-shadow 0.3s;
        }

        .tool-item:hover {
            transform: translateX(6px);
            box-shadow: var(--shadow);
        }

        .tool-icon {
            flex-shrink: 0;
            width: 52px;
            height: 52px;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
        }

        .tool-info {
            flex: 1;
        }

        .tool-info h3 {
            font-size: 17px;
            margin-bottom: 4px;
        }

        .tool-info p {
            color: var(--text-muted);
            font-size: 14px;
        }

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

        .faq-list {
            max-width: 820px;
            margin: 0 auto;
        }

        .faq-item {
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            margin-bottom: 14px;
            background: var(--bg-white);
            overflow: hidden;
            transition: box-shadow 0.3s;
        }

        .faq-item:hover {
            box-shadow: var(--shadow);
        }

        .faq-q {
            display: flex;
            align-items: center;
            gap: 16px;
            width: 100%;
            padding: 20px 24px;
            background: transparent;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            cursor: pointer;
            text-align: left;
            transition: background 0.25s;
        }

        .faq-q:hover {
            background: var(--bg);
        }

        .faq-q .faq-icon {
            flex-shrink: 0;
            width: 30px;
            height: 30px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            transition: transform 0.3s, background 0.3s;
        }

        .faq-item.open .faq-icon {
            background: var(--primary);
            color: #fff;
            transform: rotate(45deg);
        }

        .faq-a {
            display: none;
            padding: 0 24px 22px 70px;
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.8;
            border-top: 1px dashed var(--border);
            margin-top: -4px;
            padding-top: 16px;
        }

        .faq-item.open .faq-a {
            display: block;
        }

        /* ===== CTA ===== */
        .cta-section {
            position: relative;
            background-size: cover;
            background-position: center;
            padding: 96px 0;
            text-align: center;
            overflow: hidden;
        }

        .cta-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 76, 129, 0.92) 0%, rgba(10, 58, 99, 0.85) 100%);
        }

        .cta-section .container {
            position: relative;
            z-index: 2;
        }

        .cta-section h2 {
            color: #fff;
            font-size: 36px;
            margin-bottom: 18px;
        }

        .cta-section p {
            color: rgba(255, 255, 255, 0.82);
            max-width: 600px;
            margin: 0 auto 34px;
            font-size: 17px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 32px;
            border-radius: 100px;
            font-size: 15px;
            font-weight: 700;
            transition: all 0.3s;
            border: 2px solid transparent;
            line-height: 1.4;
        }

        .btn:focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 3px;
        }

        .btn-accent {
            background: var(--accent);
            color: var(--primary-dark);
            box-shadow: 0 8px 24px rgba(240, 165, 0, 0.4);
        }

        .btn-accent:hover {
            background: #f7b52a;
            color: var(--primary-dark);
            transform: translateY(-3px);
            box-shadow: 0 12px 32px rgba(240, 165, 0, 0.5);
        }

        .btn-light {
            background: rgba(255, 255, 255, 0.94);
            color: var(--primary);
            border-color: #fff;
        }

        .btn-light:hover {
            background: #fff;
            color: var(--primary-dark);
            transform: translateY(-3px);
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.18);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.72);
            padding: 70px 0 28px;
        }

        .site-footer .footer-brand .brand-logo {
            font-size: 24px;
            margin-bottom: 14px;
        }

        .site-footer .footer-brand p {
            color: rgba(255, 255, 255, 0.62);
            font-size: 14px;
            line-height: 1.8;
            margin-top: 14px;
            max-width: 300px;
        }

        .site-footer h3 {
            color: #fff;
            font-size: 16px;
            margin-bottom: 18px;
            font-weight: 700;
        }

        .site-footer .footer-links,
        .site-footer .footer-info {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .site-footer .footer-links a {
            color: rgba(255, 255, 255, 0.65);
            font-size: 14px;
            transition: color 0.25s, padding-left 0.25s;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .site-footer .footer-links a:hover {
            color: var(--accent);
            padding-left: 4px;
        }

        .site-footer .footer-info p {
            color: rgba(255, 255, 255, 0.55);
            font-size: 14px;
            line-height: 1.7;
            margin: 0;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            margin-top: 50px;
            padding-top: 24px;
            text-align: center;
            color: rgba(255, 255, 255, 0.42);
            font-size: 13px;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1200px) {
            .site-sidebar {
                width: 232px;
            }

            .main-content {
                margin-left: 232px;
            }

            .process-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .process-line {
                display: none;
            }
        }

        @media (max-width: 991px) {
            .site-sidebar {
                transform: translateX(-100%);
                width: 280px;
                box-shadow: 4px 0 40px rgba(0, 0, 0, 0.2);
            }

            .site-sidebar.open {
                transform: translateX(0);
            }

            .sidebar-close {
                display: flex;
            }

            .main-content {
                margin-left: 0;
            }

            .mobile-header {
                display: flex;
            }

            .page-hero {
                padding: 90px 0 80px;
            }

            .page-hero h1 {
                font-size: 36px;
            }

            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 767px) {
            :root {
                --space-section: 68px;
            }

            .section-head h2 {
                font-size: 28px;
            }

            .page-hero h1 {
                font-size: 30px;
            }

            .page-hero p {
                font-size: 15px;
            }

            .hero-meta {
                gap: 8px;
            }

            .hero-meta .meta-item {
                padding: 6px 14px;
                font-size: 13px;
            }

            .process-grid {
                grid-template-columns: 1fr;
            }

            .tool-item {
                flex-direction: column;
                text-align: center;
                padding: 24px 20px;
            }

            .tool-icon {
                margin-bottom: 6px;
            }

            .faq-q {
                padding: 18px 18px;
                font-size: 15px;
                line-height: 1.5;
            }

            .faq-a {
                padding: 12px 18px 20px 54px;
                font-size: 14px;
            }

            .cta-section {
                padding: 72px 0;
            }

            .cta-section h2 {
                font-size: 28px;
            }

            .btn {
                padding: 12px 24px;
                font-size: 14px;
            }
        }

        @media (max-width: 520px) {
            .metrics-grid {
                grid-template-columns: 1fr;
            }

            .page-hero {
                padding: 72px 0 64px;
            }

            .page-hero h1 {
                font-size: 26px;
            }

            .hero-badge {
                font-size: 12px;
                padding: 6px 14px;
            }

            .section-head h2 {
                font-size: 24px;
            }

            .tip-body {
                padding: 26px 18px 20px;
            }

            .tip-icon {
                width: 42px;
                height: 42px;
                font-size: 16px;
            }

            .footer-bottom {
                font-size: 12px;
            }
        }

        @media (max-width: 400px) {
            .site-sidebar {
                width: 100%;
            }

            .sidebar-inner {
                padding: 24px 18px;
            }
        }

/* roulang page: article */
:root {
            --primary: #0f766e;
            --primary-dark: #0b5d56;
            --primary-soft: #ecfdf5;
            --accent: #f59e0b;
            --accent-soft: #fff7ed;
            --dark: #0f172a;
            --text: #1e293b;
            --muted: #64748b;
            --border: #e2e8f0;
            --bg: #f4f7fb;
            --card: #ffffff;
            --radius-sm: 10px;
            --radius: 16px;
            --radius-lg: 24px;
            --shadow-sm: 0 4px 14px rgba(15, 23, 42, .06);
            --shadow: 0 12px 32px rgba(15, 23, 42, .08);
            --shadow-lg: 0 22px 50px rgba(15, 23, 42, .12);
            --header-w: 280px;
            --font-sans: "Inter", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
            --transition: .22s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: var(--font-sans);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--dark);
            font-weight: 700;
            line-height: 1.3;
            margin-top: 0;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition), background var(--transition), border var(--transition), transform var(--transition), box-shadow var(--transition);
        }

        a:hover {
            color: inherit;
        }

        img {
            max-width: 100%;
            height: auto;
        }

        .container {
            max-width: 1200px;
        }

        .btn {
            border-radius: 12px;
            font-weight: 600;
            padding: .75rem 1.5rem;
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: .5rem;
        }

        .btn:focus-visible,
        .nav-link:focus-visible,
        a:focus-visible {
            outline: 3px solid rgba(16, 185, 129, .5);
            outline-offset: 2px;
            border-radius: 12px;
        }

        .btn-brand {
            background: var(--primary);
            color: #fff;
            border: 1px solid var(--primary);
            box-shadow: 0 10px 24px rgba(15, 118, 110, .28);
        }

        .btn-brand:hover {
            background: var(--primary-dark);
            color: #fff;
            border-color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 14px 32px rgba(15, 118, 110, .34);
        }

        .btn-outline-brand {
            border: 1px solid var(--primary);
            color: var(--primary);
            background: transparent;
        }

        .btn-outline-brand:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            transform: translateY(-2px);
            box-shadow: 0 12px 28px rgba(15, 118, 110, .26);
        }

        .btn-light {
            background: #fff;
            color: var(--dark);
            border: 1px solid #fff;
        }

        .btn-light:hover {
            background: #f1f5f9;
            color: var(--dark);
            transform: translateY(-2px);
            box-shadow: 0 12px 28px rgba(255, 255, 255, .25);
        }

        .btn-outline-light {
            border: 1px solid rgba(255, 255, 255, .65);
            color: #fff;
            background: transparent;
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, .12);
            color: #fff;
            border-color: #fff;
            transform: translateY(-2px);
        }

        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--header-w);
            height: 100vh;
            background: linear-gradient(165deg, #0e2a3a 0%, #124f4a 100%);
            padding: 2rem 1.5rem 1.5rem;
            display: flex;
            flex-direction: column;
            z-index: 1050;
            box-shadow: 6px 0 30px rgba(15, 23, 42, .18);
        }

        .header-brand {
            margin-bottom: 1.25rem;
        }

        .brand-logo {
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.5px;
            line-height: 1.2;
        }

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

        .brand-desc {
            color: rgba(255, 255, 255, .58);
            font-size: .86rem;
            margin: .5rem 0 0;
        }

        .side-nav {
            display: flex;
            flex-direction: column;
            gap: .4rem;
            margin-top: 1.2rem;
        }

        .side-nav .nav-link {
            display: flex;
            align-items: center;
            gap: .75rem;
            padding: .8rem 1rem;
            border-radius: 12px;
            color: rgba(255, 255, 255, .72);
            font-weight: 500;
            white-space: nowrap;
            transition: all var(--transition);
            border: 1px solid transparent;
        }

        .side-nav .nav-link i {
            width: 20px;
            text-align: center;
            font-size: 1rem;
        }

        .side-nav .nav-link:hover {
            background: rgba(255, 255, 255, .08);
            color: #fff;
            transform: translateX(2px);
        }

        .side-nav .nav-link.active {
            background: var(--primary);
            color: #fff;
            border-color: rgba(255, 255, 255, .06);
            box-shadow: 0 12px 26px rgba(15, 118, 110, .42);
        }

        .header-foot {
            margin-top: auto;
            background: rgba(255, 255, 255, .06);
            border: 1px solid rgba(255, 255, 255, .07);
            border-radius: 16px;
            padding: 1rem 1.1rem;
            color: rgba(255, 255, 255, .68);
            font-size: .82rem;
            line-height: 1.6;
        }

        .header-foot-title {
            display: flex;
            align-items: center;
            gap: .5rem;
            color: #fff;
            font-weight: 600;
            margin-bottom: .3rem;
        }

        .header-foot-title i {
            color: #34d399;
        }

        .header-foot p {
            margin: 0;
        }

        .page-wrap {
            margin-left: var(--header-w);
        }

        .main-content {
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        .inner-banner {
            position: relative;
            padding: 88px 0 72px;
            background: linear-gradient(120deg, rgba(13, 39, 53, .94), rgba(15, 118, 110, .84)), url('/assets/images/backpic/back-1.png') center / cover no-repeat;
            color: #fff;
        }

        .inner-banner::after {
            content: '';
            position: absolute;
            inset: auto 0 0 0;
            height: 70px;
            background: linear-gradient(180deg, transparent, rgba(15, 23, 42, .22));
            pointer-events: none;
        }

        .breadcrumb-line {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: .4rem;
            font-size: .88rem;
            color: rgba(255, 255, 255, .76);
            margin-bottom: 1.2rem;
        }

        .breadcrumb-line a {
            color: #fff;
            border-bottom: 1px solid rgba(255, 255, 255, .45);
        }

        .breadcrumb-line a:hover {
            color: var(--accent);
            border-color: var(--accent);
        }

        .breadcrumb-line .sep {
            opacity: .55;
        }

        .banner-kicker {
            display: inline-flex;
            align-items: center;
            gap: .5rem;
            background: rgba(255, 255, 255, .14);
            border: 1px solid rgba(255, 255, 255, .22);
            padding: .35rem .95rem;
            border-radius: 999px;
            font-size: .82rem;
            margin-bottom: 1rem;
            color: rgba(255, 255, 255, .9);
        }

        .banner-kicker i {
            color: var(--accent);
        }

        .inner-banner h1 {
            font-size: 2.35rem;
            font-weight: 800;
            color: #fff;
            margin: 0 0 1rem;
            overflow-wrap: anywhere;
        }

        .banner-meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 1.2rem;
            color: rgba(255, 255, 255, .82);
            font-size: .9rem;
        }

        .banner-meta span {
            display: inline-flex;
            align-items: center;
            gap: .4rem;
        }

        .banner-meta i {
            color: var(--accent);
        }

        .content-wrap {
            padding: 3.5rem 0 4rem;
        }

        .article-card {
            background: var(--card);
            border: 1px solid #eef2f6;
            border-radius: 20px;
            box-shadow: var(--shadow);
            padding: 2.4rem 2.8rem;
        }

        .article-note {
            display: flex;
            align-items: flex-start;
            gap: .75rem;
            background: var(--primary-soft);
            border: 1px solid #a7f3d0;
            color: var(--primary-dark);
            border-radius: 14px;
            padding: .9rem 1.15rem;
            margin-bottom: 1.8rem;
            font-size: .9rem;
            line-height: 1.7;
        }

        .article-note i {
            margin-top: .25rem;
            color: var(--primary);
        }

        .article-content {
            font-size: 1.06rem;
            line-height: 1.9;
            color: #334155;
        }

        .article-content h2 {
            font-size: 1.55rem;
            font-weight: 800;
            margin: 2rem 0 1rem;
            padding-left: 1rem;
            border-left: 4px solid var(--primary);
            color: var(--dark);
        }

        .article-content h3 {
            font-size: 1.25rem;
            font-weight: 700;
            margin: 1.6rem 0 .75rem;
            color: var(--dark);
        }

        .article-content p {
            margin-bottom: 1.2rem;
        }

        .article-content img {
            border-radius: 16px;
            margin: 1.5rem 0;
            box-shadow: var(--shadow-sm);
        }

        .article-content ul,
        .article-content ol {
            margin: 1rem 0 1.4rem;
            padding-left: 1.4rem;
        }

        .article-content ul li,
        .article-content ol li {
            margin-bottom: .45rem;
        }

        .article-content blockquote {
            border-left: 4px solid var(--accent);
            background: var(--accent-soft);
            padding: 1rem 1.4rem;
            border-radius: 0 14px 14px 0;
            color: #475569;
            margin: 1.5rem 0;
        }

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

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

        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.5rem 0;
        }

        .article-content table th,
        .article-content table td {
            border: 1px solid var(--border);
            padding: .75rem 1rem;
            text-align: left;
        }

        .article-content table th {
            background: var(--bg);
            font-weight: 700;
            color: var(--dark);
        }

        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: .55rem;
            margin-top: 1.6rem;
            padding-top: 1.35rem;
            border-top: 1px solid var(--border);
        }

        .tag-badge {
            display: inline-flex;
            align-items: center;
            gap: .4rem;
            background: var(--primary-soft);
            color: var(--primary-dark);
            border: 1px solid #a7f3d0;
            padding: .38rem .8rem;
            border-radius: 999px;
            font-size: .82rem;
            font-weight: 500;
            transition: all var(--transition);
        }

        .tag-badge:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }

        .article-foot {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: .8rem;
            border-top: 1px solid var(--border);
            margin-top: 1.4rem;
            padding-top: 1.4rem;
            color: var(--muted);
            font-size: .9rem;
        }

        .article-foot span {
            display: inline-flex;
            align-items: center;
            gap: .45rem;
        }

        .article-foot i {
            color: var(--primary);
        }

        .empty-state {
            text-align: center;
            padding: 3.5rem 1.5rem;
        }

        .empty-icon {
            width: 88px;
            height: 88px;
            border-radius: 22px;
            background: var(--primary-soft);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 2.2rem;
            margin: 0 auto 1.5rem;
            transform: rotate(-3deg);
        }

        .empty-state h2 {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--dark);
        }

        .empty-state p {
            color: var(--muted);
            max-width: 420px;
            margin: .75rem auto 1.75rem;
        }

        .sidebar {
            position: sticky;
            top: 24px;
        }

        .side-card {
            background: var(--card);
            border: 1px solid #eef2f6;
            border-radius: 18px;
            padding: 1.5rem;
            box-shadow: var(--shadow-sm);
            margin-bottom: 1.5rem;
        }

        .side-title {
            display: flex;
            align-items: center;
            gap: .6rem;
            font-size: 1.08rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: .9rem;
        }

        .side-title i {
            color: var(--primary);
            background: var(--primary-soft);
            width: 32px;
            height: 32px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
        }

        .side-service-img {
            border-radius: 14px;
            width: 100%;
            object-fit: cover;
            margin-bottom: 1rem;
            box-shadow: var(--shadow-sm);
        }

        .service-card-title {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: .5rem;
        }

        .service-card-desc {
            color: var(--muted);
            font-size: .9rem;
            margin-bottom: 1.1rem;
        }

        .side-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .side-list li {
            border-bottom: 1px dashed var(--border);
        }

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

        .side-list li a {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: .75rem;
            color: var(--text);
            font-weight: 500;
            padding: .65rem .55rem;
            border-radius: 12px;
            font-size: .92rem;
            transition: all var(--transition);
        }

        .side-list li a:hover {
            background: var(--primary-soft);
            color: var(--primary);
            transform: translateX(2px);
        }

        .side-list li a span {
            display: inline-flex;
            align-items: center;
            gap: .6rem;
        }

        .side-list li a .fa-arrow-right {
            color: var(--muted);
            font-size: .8rem;
        }

        .side-list li a:hover .fa-arrow-right {
            color: var(--primary);
        }

        .side-cta {
            background: linear-gradient(135deg, #0f766e 0%, #134e4a 100%);
            border-radius: 18px;
            padding: 1.75rem 1.5rem;
            text-align: center;
            color: #fff;
            box-shadow: var(--shadow);
        }

        .side-cta-icon {
            width: 58px;
            height: 58px;
            border-radius: 16px;
            background: rgba(255, 255, 255, .14);
            color: #fff;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            margin-bottom: 1rem;
        }

        .side-cta h3 {
            color: #fff;
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: .5rem;
        }

        .side-cta p {
            color: rgba(255, 255, 255, .78);
            font-size: .88rem;
            margin-bottom: 1.2rem;
        }

        .side-cta .btn-light {
            color: var(--primary);
        }

        .cta-section {
            padding: 4rem 0 4.5rem;
        }

        .cta-inner {
            position: relative;
            background: linear-gradient(135deg, #0f766e 0%, #134e4a 100%);
            border-radius: var(--radius-lg);
            padding: 3.5rem 2.5rem;
            text-align: center;
            color: #fff;
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }

        .cta-inner::before {
            content: '';
            position: absolute;
            width: 320px;
            height: 320px;
            border-radius: 50%;
            background: rgba(255, 255, 255, .06);
            top: -140px;
            right: -80px;
        }

        .cta-inner::after {
            content: '';
            position: absolute;
            width: 220px;
            height: 220px;
            border-radius: 50%;
            background: rgba(255, 255, 255, .04);
            bottom: -110px;
            left: -60px;
        }

        .cta-inner h2 {
            color: #fff;
            font-size: 1.9rem;
            font-weight: 800;
            margin-bottom: .8rem;
        }

        .cta-inner p {
            max-width: 640px;
            margin: 0 auto 2rem;
            color: rgba(255, 255, 255, .85);
        }

        .cta-inner .btn + .btn {
            margin-left: .75rem;
        }

        .site-footer {
            background: #0e2a3a;
            color: rgba(255, 255, 255, .72);
            padding: 4rem 0 0;
            margin-top: auto;
        }

        .footer-brand .brand-logo {
            font-size: 1.9rem;
            color: #fff;
        }

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

        .footer-brand p {
            max-width: 320px;
            margin-top: 1rem;
            color: rgba(255, 255, 255, .6);
        }

        .footer-links h3,
        .footer-info h3 {
            color: #fff;
            font-size: 1.05rem;
            margin-bottom: 1.1rem;
            position: relative;
            padding-bottom: .6rem;
        }

        .footer-links h3::after,
        .footer-info h3::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 28px;
            height: 3px;
            border-radius: 99px;
            background: var(--accent);
        }

        .footer-links a {
            display: block;
            color: rgba(255, 255, 255, .68);
            padding: .35rem 0;
            font-size: .92rem;
            transition: all var(--transition);
        }

        .footer-links a:hover {
            color: #fff;
            padding-left: .3rem;
        }

        .footer-info p {
            margin-bottom: .4rem;
            color: rgba(255, 255, 255, .6);
            font-size: .92rem;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .1);
            margin-top: 3rem;
            padding: 1.3rem 0;
            text-align: center;
            color: rgba(255, 255, 255, .5);
            font-size: .88rem;
        }

        @media (max-width: 1199.98px) {
            .article-card {
                padding: 2rem 1.8rem;
            }
        }

        @media (max-width: 991.98px) {
            .site-header {
                position: relative;
                width: 100%;
                height: auto;
                padding: 1.25rem 1.25rem .75rem;
                display: block;
                background: linear-gradient(135deg, #0e2a3a 0%, #115e59 100%);
                box-shadow: 0 6px 22px rgba(15, 23, 42, .12);
            }

            .header-brand {
                display: flex;
                align-items: center;
                justify-content: space-between;
                margin-bottom: 0;
            }

            .brand-desc {
                display: none;
            }

            .side-nav {
                width: 100%;
                display: flex;
                flex-direction: row;
                overflow-x: auto;
                gap: .4rem;
                padding: .65rem 0 .35rem;
                margin-top: .4rem;
                scrollbar-width: thin;
            }

            .side-nav::-webkit-scrollbar {
                height: 4px;
            }

            .side-nav::-webkit-scrollbar-thumb {
                background: rgba(255, 255, 255, .25);
                border-radius: 99px;
            }

            .side-nav .nav-link {
                flex: 0 0 auto;
                margin: 0;
            }

            .header-foot {
                display: none;
            }

            .page-wrap {
                margin-left: 0;
            }

            .inner-banner {
                padding: 68px 0 56px;
            }

            .inner-banner h1 {
                font-size: 2rem;
            }

            .sidebar {
                position: static;
                margin-top: 1.5rem;
            }
        }

        @media (max-width: 767.98px) {
            .content-wrap {
                padding: 2.5rem 0 3rem;
            }

            .article-card {
                padding: 1.8rem 1.5rem;
            }

            .inner-banner {
                padding: 56px 0 46px;
            }

            .inner-banner h1 {
                font-size: 1.78rem;
            }

            .banner-meta {
                gap: .9rem;
                font-size: .84rem;
            }

            .cta-inner {
                padding: 3rem 1.5rem;
            }

            .cta-inner .btn + .btn {
                margin-left: 0;
                margin-top: .75rem;
            }
        }

        @media (max-width: 520px) {
            .site-header {
                padding: 1rem .9rem .55rem;
            }

            .brand-logo,
            .footer-brand .brand-logo {
                font-size: 1.55rem;
            }

            .side-nav .nav-link {
                padding: .6rem .8rem;
                font-size: .88rem;
            }

            .inner-banner {
                padding: 46px 0 38px;
            }

            .inner-banner h1 {
                font-size: 1.55rem;
            }

            .banner-kicker {
                font-size: .78rem;
            }

            .banner-meta {
                gap: .65rem;
                font-size: .8rem;
            }

            .content-wrap {
                padding: 1.8rem 0 2.2rem;
            }

            .article-card {
                padding: 1.35rem 1.1rem;
                border-radius: 16px;
            }

            .article-content {
                font-size: .99rem;
            }

            .article-content h2 {
                font-size: 1.3rem;
            }

            .cta-inner {
                padding: 2.6rem 1.1rem;
                border-radius: 18px;
            }

            .cta-inner h2 {
                font-size: 1.45rem;
            }

            .cta-inner .btn {
                width: 100%;
                margin: .4rem 0;
            }

            .footer-bottom {
                font-size: .82rem;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #2563eb;
            --primary-dark: #1d4ed8;
            --primary-light: #dbeafe;
            --secondary: #0ea5e9;
            --accent: #f59e0b;
            --bg: #f1f5f9;
            --surface: #ffffff;
            --text: #0f172a;
            --muted: #64748b;
            --border: #e2e8f0;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.06);
            --shadow: 0 8px 30px rgba(15, 23, 42, 0.08);
            --shadow-lg: 0 20px 50px rgba(37, 99, 235, 0.12);
            --sidebar-w: 260px;
            --transition: all 0.3s ease;
            --font: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

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

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input {
            font-family: inherit;
        }

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

        .side-panel {
            width: var(--sidebar-w);
            background: var(--surface);
            border-right: 1px solid var(--border);
            position: fixed;
            top: 0;
            left: 0;
            bottom: 0;
            z-index: 1040;
            display: flex;
            flex-direction: column;
            padding: 28px 20px;
            box-shadow: 2px 0 20px rgba(15, 23, 42, 0.02);
        }

        .side-brand {
            padding-bottom: 30px;
            border-bottom: 1px solid var(--border);
            margin-bottom: 24px;
            text-align: center;
        }

        .brand-logo {
            font-size: 26px;
            font-weight: 800;
            color: var(--text);
            letter-spacing: -0.5px;
            display: inline-flex;
            align-items: baseline;
        }

        .brand-logo span {
            color: var(--primary);
            font-weight: 800;
        }

        .side-nav {
            display: flex;
            flex-direction: column;
            gap: 6px;
            flex: 1;
        }

        .nav-link {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 13px 18px;
            border-radius: var(--radius-sm);
            color: var(--muted);
            font-size: 15px;
            font-weight: 500;
            transition: var(--transition);
        }

        .nav-link i {
            width: 20px;
            text-align: center;
            font-size: 16px;
        }

        .nav-link:hover {
            background: var(--primary-light);
            color: var(--primary);
            transform: translateX(4px);
        }

        .nav-link.active {
            background: var(--primary);
            color: #ffffff;
            box-shadow: 0 6px 20px rgba(37, 99, 235, 0.3);
        }

        .nav-link.active i {
            color: #ffffff;
        }

        .side-foot {
            padding-top: 18px;
            border-top: 1px solid var(--border);
            font-size: 13px;
            color: var(--muted);
            text-align: center;
        }

        .side-foot p {
            margin: 0;
        }

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

        .mobile-topbar {
            display: none;
            position: sticky;
            top: 0;
            z-index: 1050;
            background: var(--surface);
            border-bottom: 1px solid var(--border);
            padding: 12px 20px;
            box-shadow: 0 4px 20px rgba(15, 23, 42, 0.04);
        }

        .mobile-topbar-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .mobile-toggle {
            background: var(--primary-light);
            border: none;
            color: var(--primary);
            width: 42px;
            height: 42px;
            border-radius: 12px;
            font-size: 18px;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: var(--transition);
        }

        .mobile-toggle:hover {
            background: var(--primary);
            color: #ffffff;
        }

        .mobile-menu {
            padding: 12px 0 4px;
        }

        .mobile-link {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            color: var(--muted);
            font-weight: 500;
            font-size: 14px;
            transition: var(--transition);
        }

        .mobile-link i {
            width: 20px;
            text-align: center;
        }

        .mobile-link:hover {
            background: var(--primary-light);
            color: var(--primary);
        }

        .mobile-link.active {
            background: var(--primary);
            color: #ffffff;
        }

        .main-area {
            flex: 1;
            width: 100%;
        }

        .section {
            padding: 80px 0;
        }

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

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 50px;
            letter-spacing: 1px;
            text-transform: uppercase;
            margin-bottom: 14px;
        }

        .section-head h2 {
            font-size: 34px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 10px;
            letter-spacing: -0.5px;
        }

        .section-head p {
            color: var(--muted);
            font-size: 16px;
            max-width: 560px;
            margin: 0 auto;
        }

        .page-hero {
            position: relative;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            padding: 110px 0 90px;
            overflow: hidden;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(15, 23, 42, 0.88) 0%, rgba(37, 99, 235, 0.72) 100%);
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 720px;
            padding: 0 24px;
            margin: 0 auto;
            text-align: center;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.25);
            backdrop-filter: blur(12px);
            color: #ffffff;
            font-size: 14px;
            font-weight: 500;
            padding: 8px 20px;
            border-radius: 50px;
            margin-bottom: 22px;
        }

        .hero-content h1 {
            font-size: 48px;
            font-weight: 800;
            color: #ffffff;
            margin-bottom: 18px;
            letter-spacing: -1px;
            line-height: 1.2;
        }

        .hero-content .lead {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.85);
            line-height: 1.8;
            margin-bottom: 30px;
        }

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

        .btn {
            border-radius: 12px;
            font-weight: 600;
            padding: 12px 28px;
            font-size: 15px;
            border: none;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-primary {
            background: var(--primary);
            color: #ffffff;
            box-shadow: 0 8px 24px rgba(37, 99, 235, 0.35);
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-3px);
            box-shadow: 0 12px 30px rgba(37, 99, 235, 0.4);
        }

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

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.15);
            border-color: #ffffff;
            transform: translateY(-3px);
        }

        .breadcrumb-wrap {
            position: relative;
            z-index: 2;
            margin-top: 24px;
            text-align: center;
        }

        .breadcrumb-wrap .breadcrumb {
            display: inline-flex;
            background: rgba(255, 255, 255, 0.08);
            backdrop-filter: blur(8px);
            border-radius: 50px;
            padding: 8px 24px;
            border: 1px solid rgba(255, 255, 255, 0.2);
        }

        .breadcrumb-item {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.7);
        }

        .breadcrumb-item a {
            color: rgba(255, 255, 255, 0.85);
        }

        .breadcrumb-item a:hover {
            color: #ffffff;
        }

        .breadcrumb-item.active {
            color: rgba(255, 255, 255, 0.9);
        }

        .breadcrumb-item+.breadcrumb-item::before {
            color: rgba(255, 255, 255, 0.5);
        }

        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .method-card {
            background: var(--surface);
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            height: 100%;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }

        .method-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(37, 99, 235, 0.3);
        }

        .method-card .card-img-wrap {
            position: relative;
            height: 180px;
            overflow: hidden;
        }

        .method-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

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

        .method-card .card-img-wrap::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 30%, rgba(15, 23, 42, 0.15));
        }

        .method-card .card-body {
            padding: 28px 24px 26px;
            position: relative;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .card-icon {
            width: 52px;
            height: 52px;
            background: var(--primary-light);
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--primary);
            margin-bottom: 18px;
            transition: var(--transition);
        }

        .method-card:hover .card-icon {
            background: var(--primary);
            color: #ffffff;
        }

        .method-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text);
        }

        .method-card p {
            font-size: 14px;
            color: var(--muted);
            line-height: 1.7;
            margin-bottom: 0;
            flex: 1;
        }

        .stats-section {
            background: var(--surface);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            max-width: 1000px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .stat-item {
            text-align: center;
            padding: 24px 16px;
            border-radius: var(--radius);
            transition: var(--transition);
        }

        .stat-item:hover {
            background: var(--primary-light);
        }

        .stat-num {
            display: block;
            font-size: 48px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1;
            margin-bottom: 10px;
            letter-spacing: -2px;
        }

        .stat-label {
            font-size: 14px;
            color: var(--muted);
            font-weight: 500;
        }

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

        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            max-width: 1100px;
            margin: 0 auto;
            padding: 0 24px;
            position: relative;
        }

        .process-steps::before {
            content: '';
            position: absolute;
            top: 30px;
            left: 10%;
            right: 10%;
            height: 2px;
            background: linear-gradient(90deg, var(--primary), var(--secondary), var(--primary));
            opacity: 0.25;
            border-radius: 4px;
        }

        .process-step {
            background: var(--surface);
            border-radius: var(--radius);
            padding: 28px 24px;
            text-align: center;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            position: relative;
            transition: var(--transition);
        }

        .process-step:hover {
            box-shadow: var(--shadow);
            transform: translateY(-6px);
        }

        .step-num {
            width: 60px;
            height: 60px;
            background: var(--primary);
            color: #ffffff;
            font-size: 20px;
            font-weight: 800;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            box-shadow: 0 8px 24px rgba(37, 99, 235, 0.3);
        }

        .process-step h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .process-step p {
            font-size: 14px;
            color: var(--muted);
            margin-bottom: 0;
        }

        .articles-section {
            background: var(--surface);
            border-top: 1px solid var(--border);
        }

        .article-list {
            max-width: 860px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 18px;
        }

        .article-item {
            display: flex;
            gap: 24px;
            padding: 26px 28px;
            background: var(--bg);
            border-radius: var(--radius);
            border: 1px solid transparent;
            transition: var(--transition);
            align-items: flex-start;
        }

        .article-item:hover {
            border-color: rgba(37, 99, 235, 0.2);
            background: var(--surface);
            box-shadow: var(--shadow);
            transform: translateX(6px);
        }

        .article-meta {
            flex-shrink: 0;
            min-width: 92px;
            text-align: center;
            padding-right: 20px;
            border-right: 1px solid var(--border);
        }

        .article-date {
            display: block;
            font-size: 20px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
        }

        .article-tag {
            display: inline-block;
            font-size: 12px;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: 30px;
            padding: 4px 12px;
            margin-top: 8px;
            font-weight: 600;
        }

        .article-text {
            flex: 1;
        }

        .article-text h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 6px;
            color: var(--text);
            transition: var(--transition);
        }

        .article-item:hover .article-text h3 {
            color: var(--primary);
        }

        .article-text p {
            font-size: 14px;
            color: var(--muted);
            margin-bottom: 0;
            line-height: 1.7;
        }

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

        .faq-wrap {
            max-width: 800px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .accordion-item {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius) !important;
            margin-bottom: 16px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }

        .accordion-item:last-child {
            margin-bottom: 0;
        }

        .accordion-button {
            padding: 20px 26px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            background: var(--surface);
            border: none;
            gap: 12px;
        }

        .accordion-button:not(.collapsed) {
            background: var(--primary-light);
            color: var(--primary);
            box-shadow: none;
        }

        .accordion-button:focus {
            box-shadow: none;
            border-color: transparent;
        }

        .accordion-button::after {
            background-size: 14px;
            filter: grayscale(0.3);
        }

        .accordion-body {
            padding: 4px 26px 22px;
            font-size: 14px;
            color: var(--muted);
            line-height: 1.8;
            background: var(--surface);
            border-top: 1px solid rgba(226, 232, 240, 0.5);
        }

        .cta-section {
            padding: 70px 0;
            background: var(--surface);
        }

        .cta-box {
            position: relative;
            background: linear-gradient(120deg, var(--primary), var(--secondary));
            border-radius: 24px;
            padding: 56px 48px;
            text-align: center;
            color: #ffffff;
            max-width: 900px;
            margin: 0 auto;
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }

        .cta-box::before {
            content: '';
            position: absolute;
            top: -40px;
            right: -40px;
            width: 180px;
            height: 180px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 50%;
        }

        .cta-box::after {
            content: '';
            position: absolute;
            bottom: -50px;
            left: 60px;
            width: 120px;
            height: 120px;
            background: rgba(255, 255, 255, 0.08);
            border-radius: 50%;
        }

        .cta-box h2 {
            font-size: 32px;
            font-weight: 700;
            margin-bottom: 14px;
            position: relative;
            z-index: 2;
        }

        .cta-box p {
            font-size: 16px;
            opacity: 0.9;
            margin-bottom: 28px;
            position: relative;
            z-index: 2;
        }

        .cta-box .btn-light {
            background: #ffffff;
            color: var(--primary);
            border-radius: 50px;
            padding: 14px 34px;
            font-weight: 700;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
            position: relative;
            z-index: 2;
        }

        .cta-box .btn-light:hover {
            transform: translateY(-3px);
            box-shadow: 0 14px 30px rgba(0, 0, 0, 0.2);
        }

        .site-footer {
            background: #0f172a;
            color: #94a3b8;
            padding: 60px 0 0;
        }

        .site-footer .container-fluid {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .site-footer .footer-brand {
            padding-right: 30px;
        }

        .site-footer .brand-logo {
            color: #ffffff;
            font-size: 24px;
            margin-bottom: 16px;
            display: inline-block;
        }

        .site-footer .brand-logo span {
            color: #60a5fa;
        }

        .site-footer p {
            font-size: 14px;
            line-height: 1.7;
            color: #94a3b8;
        }

        .site-footer h3 {
            color: #ffffff;
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 18px;
            letter-spacing: 0.5px;
        }

        .footer-links,
        .footer-info {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-links a {
            color: #94a3b8;
            font-size: 14px;
            transition: var(--transition);
        }

        .footer-links a:hover {
            color: #60a5fa;
            padding-left: 6px;
        }

        .footer-info p {
            font-size: 14px;
            margin-bottom: 0;
        }

        .footer-bottom {
            margin-top: 48px;
            border-top: 1px solid rgba(148, 163, 184, 0.15);
            padding: 20px 0;
            text-align: center;
        }

        .footer-bottom p {
            font-size: 13px;
            margin: 0;
            color: #64748b;
        }

        @media (max-width: 1024px) {
            .side-panel {
                transform: translateX(-100%);
                transition: transform 0.3s ease;
            }

            .side-panel.open {
                transform: translateX(0);
            }

            .content-shell {
                margin-left: 0;
            }

            .mobile-topbar {
                display: block;
            }

            .main-area {
                padding-top: 0;
            }

            .process-steps {
                grid-template-columns: repeat(2, 1fr);
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }

            .article-item {
                flex-direction: column;
                gap: 12px;
            }

            .article-meta {
                text-align: left;
                min-width: auto;
                padding-right: 0;
                border-right: none;
                display: flex;
                align-items: center;
                gap: 12px;
            }

            .article-tag {
                margin-top: 0;
            }
        }

        @media (max-width: 768px) {
            .section {
                padding: 60px 0;
            }

            .hero-content h1 {
                font-size: 34px;
            }

            .hero-content .lead {
                font-size: 16px;
            }

            .section-head h2 {
                font-size: 26px;
            }

            .process-steps {
                grid-template-columns: 1fr;
            }

            .cta-box {
                padding: 40px 24px;
            }

            .cta-box h2 {
                font-size: 24px;
            }
        }

        @media (max-width: 520px) {
            .stats-grid {
                grid-template-columns: 1fr;
            }

            .stat-item {
                padding: 16px;
            }

            .stat-num {
                font-size: 36px;
            }

            .hero-actions {
                flex-direction: column;
                align-items: center;
            }

            .hero-actions .btn {
                width: 100%;
                justify-content: center;
            }

            .method-card .card-img-wrap {
                height: 150px;
            }

            .article-item {
                padding: 18px;
            }
        }

/* roulang page: category3 */
:root{
    --primary:#0F4C81;
    --primary-dark:#0B3D68;
    --primary-light:#E8F1FA;
    --accent:#2EB398;
    --accent-dark:#24997F;
    --accent-light:#E5F7F3;
    --bg:#F4F7FA;
    --bg-alt:#EBF1F7;
    --card-bg:#FFFFFF;
    --text:#1B2A38;
    --text-muted:#5F738C;
    --border:#DFE7EF;
    --radius:18px;
    --radius-sm:10px;
    --shadow:0 10px 40px rgba(15,76,129,.08);
    --shadow-hover:0 18px 50px rgba(15,76,129,.15);
    --transition:all .3s ease;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
    font-family:"Inter","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
    background:var(--bg);
    color:var(--text);
    line-height:1.7;
    -webkit-font-smoothing:antialiased;
}
a{text-decoration:none;color:inherit;transition:var(--transition)}
img{max-width:100%;height:auto;display:block}
button,input,textarea{font-family:inherit}
a:focus-visible,button:focus-visible,textarea:focus-visible,input:focus-visible{
    outline:3px solid rgba(46,178,152,.4);
    outline-offset:2px;
}
.container{max-width:1160px;padding-left:20px;padding-right:20px}

/* ===== 左侧导航 ===== */
.site-sidebar{
    position:fixed;
    top:0;left:0;bottom:0;
    width:280px;
    background:var(--card-bg);
    border-right:1px solid var(--border);
    z-index:1040;
    box-shadow:2px 0 30px rgba(15,76,129,.05);
}
.sidebar-inner{
    display:flex;
    flex-direction:column;
    height:100%;
    padding:36px 24px 28px;
}
.brand-logo{
    display:inline-flex;
    align-items:center;
    font-size:26px;
    font-weight:800;
    color:var(--primary);
    letter-spacing:-0.5px;
}
.brand-logo span{color:var(--accent);margin-left:2px}
.side-nav{
    display:flex;
    flex-direction:column;
    gap:8px;
    margin-top:44px;
}
.nav-link{
    display:flex;
    align-items:center;
    gap:14px;
    padding:14px 18px;
    border-radius:12px;
    color:var(--text-muted);
    font-weight:500;
    font-size:15px;
    transition:var(--transition);
}
.nav-link i{
    width:22px;
    text-align:center;
    font-size:16px;
    flex-shrink:0;
}
.nav-link:hover{
    background:var(--primary-light);
    color:var(--primary);
    transform:translateX(3px);
}
.nav-link.active{
    background:var(--primary);
    color:#fff;
    box-shadow:0 10px 25px rgba(15,76,129,.28);
    transform:none;
}
.sidebar-note{
    margin-top:auto;
    padding:16px 14px;
    border-radius:14px;
    background:var(--bg);
    border:1px solid var(--border);
    font-size:13px;
    color:var(--text-muted);
    display:flex;
    gap:10px;
    align-items:flex-start;
}
.sidebar-note i{color:var(--accent);font-size:16px;margin-top:2px}
.sidebar-note p{line-height:1.5}

/* ===== 移动端顶部 ===== */
.mobile-header{
    display:none;
    position:sticky;
    top:0;
    z-index:1030;
    background:rgba(255,255,255,.94);
    backdrop-filter:blur(12px);
    border-bottom:1px solid var(--border);
    padding:14px 20px;
}
.mobile-header-inner{
    display:flex;
    align-items:center;
    justify-content:space-between;
    max-width:640px;
    margin:0 auto;
}
.btn-menu{
    width:42px;
    height:42px;
    display:flex;
    align-items:center;
    justify-content:center;
    border:1px solid var(--border);
    border-radius:10px;
    background:#fff;
    color:var(--primary);
    font-size:18px;
    transition:var(--transition);
}
.btn-menu:hover{
    background:var(--primary-light);
    border-color:var(--primary-light);
}
.offcanvas{
    max-width:300px;
}
.offcanvas-header{
    border-bottom:1px solid var(--border);
}
.offcanvas-brand{
    font-size:22px;
    font-weight:800;
    color:var(--primary);
}
.offcanvas-body .side-nav{
    margin-top:16px;
}

/* ===== 主内容区 ===== */
.site-main{
    margin-left:280px;
    min-height:100vh;
}
.main-outer{
    overflow:hidden;
}

/* ===== Hero ===== */
.hero{
    position:relative;
    padding:108px 0 96px;
    background:linear-gradient(135deg,rgba(11,61,104,.94) 0%,rgba(15,76,129,.86) 100%),url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
    color:#fff;
    isolation:isolate;
}
.hero::after{
    content:'';
    position:absolute;
    inset:auto 0 0 0;
    height:4px;
    background:linear-gradient(90deg,var(--accent),transparent);
    z-index:-1;
}
.hero-badge{
    display:inline-flex;
    align-items:center;
    gap:8px;
    padding:8px 18px;
    border-radius:30px;
    background:rgba(255,255,255,.12);
    border:1px solid rgba(255,255,255,.22);
    font-size:14px;
    font-weight:500;
    letter-spacing:0.4px;
    margin-bottom:22px;
}
.hero-badge i{color:var(--accent)}
.hero-content h1{
    font-size:46px;
    font-weight:800;
    line-height:1.2;
    letter-spacing:-1px;
    max-width:620px;
    margin-bottom:20px;
}
.hero-content .lead{
    font-size:18px;
    line-height:1.8;
    opacity:.9;
    max-width:620px;
    margin-bottom:34px;
}
.hero-actions{
    display:flex;
    gap:14px;
    flex-wrap:wrap;
    margin-bottom:42px;
}
.btn{
    border-radius:10px;
    font-weight:600;
    padding:12px 28px;
    transition:var(--transition);
    border:0;
}
.btn-primary{
    background:var(--accent);
    color:#fff;
    box-shadow:0 10px 25px rgba(46,178,152,.3);
}
.btn-primary:hover{
    background:#219d84;
    color:#fff;
    transform:translateY(-2px);
    box-shadow:0 14px 30px rgba(46,178,152,.35);
}
.btn-light{
    background:rgba(255,255,255,.95);
    color:var(--primary-dark);
}
.btn-light:hover{
    background:#fff;
    transform:translateY(-2px);
    box-shadow:0 14px 30px rgba(0,0,0,.15);
    color:var(--primary);
}
.hero-meta{
    display:flex;
    gap:24px;
    flex-wrap:wrap;
}
.hero-meta span{
    display:inline-flex;
    align-items:center;
    gap:8px;
    font-size:14px;
    opacity:.9;
}
.hero-meta i{color:var(--accent)}

/* ===== 常规板块 ===== */
.section{
    padding:80px 0;
}
.section-alt{
    background:var(--bg-alt);
}
.section-header{
    max-width:720px;
    margin-bottom:46px;
}
.section-tag{
    display:inline-flex;
    align-items:center;
    gap:6px;
    font-size:14px;
    font-weight:600;
    letter-spacing:0.3px;
    color:var(--accent-dark);
    background:var(--accent-light);
    padding:6px 16px;
    border-radius:30px;
    margin-bottom:14px;
}
.section-title{
    font-size:32px;
    font-weight:800;
    letter-spacing:-0.4px;
    color:var(--text);
    line-height:1.3;
    margin-bottom:12px;
}
.section-desc{
    color:var(--text-muted);
    font-size:16px;
    line-height:1.8;
}

/* ===== 特点卡片 ===== */
.feature-card{
    background:var(--card-bg);
    border:1px solid var(--border);
    border-radius:var(--radius);
    padding:30px 24px;
    height:100%;
    transition:var(--transition);
    position:relative;
    overflow:hidden;
}
.feature-card::before{
    content:'';
    position:absolute;
    top:0;left:0;right:0;
    height:3px;
    background:linear-gradient(90deg,var(--accent),var(--primary));
    opacity:0;
    transition:var(--transition);
}
.feature-card:hover{
    transform:translateY(-6px);
    box-shadow:var(--shadow-hover);
    border-color:transparent;
}
.feature-card:hover::before{opacity:1}
.feature-icon{
    width:56px;
    height:56px;
    border-radius:14px;
    display:flex;
    align-items:center;
    justify-content:center;
    font-size:22px;
    margin-bottom:20px;
    color:var(--primary);
    background:var(--primary-light);
}
.feature-card h3{
    font-size:19px;
    font-weight:700;
    margin-bottom:10px;
    color:var(--text);
}
.feature-card p{
    color:var(--text-muted);
    font-size:14.5px;
    line-height:1.7;
    margin-bottom:0;
}

/* ===== 检查项卡片 ===== */
.check-card{
    background:var(--card-bg);
    border:1px solid var(--border);
    border-radius:var(--radius);
    padding:28px 22px;
    height:100%;
    transition:var(--transition);
    position:relative;
    margin-bottom:0;
}
.check-card:hover{
    box-shadow:var(--shadow-hover);
    transform:translateY(-4px);
}
.check-icon{
    width:48px;
    height:48px;
    border-radius:12px;
    display:flex;
    align-items:center;
    justify-content:center;
    font-size:19px;
    background:var(--accent-light);
    color:var(--accent-dark);
    margin-bottom:18px;
    transition:var(--transition);
}
.check-card:hover .check-icon{
    background:var(--accent);
    color:#fff;
}
.check-card h3{
    font-size:17px;
    font-weight:700;
    margin-bottom:8px;
}
.check-card p{
    color:var(--text-muted);
    font-size:14px;
    line-height:1.7;
    margin-bottom:0;
}
.check-tag{
    display:inline-block;
    margin-top:14px;
    font-size:12px;
    font-weight:600;
    color:var(--primary);
    background:var(--primary-light);
    border-radius:20px;
    padding:4px 12px;
}

/* ===== 合规分栏 ===== */
.compliance-wrap{
    background:var(--card-bg);
    border:1px solid var(--border);
    border-radius:var(--radius);
    padding:0;
    overflow:hidden;
    box-shadow:var(--shadow);
}
.compliance-image{
    position:relative;
    height:100%;
    min-height:360px;
    background:url('/assets/images/coverpic/cover-5.png') center center / cover no-repeat;
}
.compliance-image::after{
    content:'';
    position:absolute;
    inset:0;
    background:linear-gradient(135deg,rgba(11,61,104,.15),rgba(46,178,152,.05));
}
.compliance-image .img-badge{
    position:absolute;
    left:20px;
    bottom:20px;
    z-index:2;
    background:rgba(255,255,255,.95);
    border-radius:12px;
    padding:12px 18px;
    font-size:14px;
    font-weight:600;
    color:var(--primary);
    box-shadow:0 8px 25px rgba(0,0,0,.15);
}
.compliance-body{
    padding:40px 36px;
}
.compliance-list{
    list-style:none;
    padding:0;
    margin:0;
}
.compliance-list li{
    display:flex;
    align-items:flex-start;
    gap:14px;
    padding:16px 0;
    border-bottom:1px dashed var(--border);
}
.compliance-list li:last-child{border-bottom:0}
.compliance-list i{
    width:26px;
    height:26px;
    border-radius:8px;
    background:var(--accent-light);
    color:var(--accent-dark);
    display:flex;
    align-items:center;
    justify-content:center;
    font-size:12px;
    flex-shrink:0;
    margin-top:4px;
}
.compliance-list h4{
    font-size:16px;
    font-weight:700;
    margin-bottom:4px;
}
.compliance-list p{
    color:var(--text-muted);
    font-size:14px;
    line-height:1.6;
    margin-bottom:0;
}

/* ===== 流程步骤 ===== */
.steps-grid{
    counter-reset:step;
}
.step-item{
    position:relative;
    background:var(--card-bg);
    border:1px solid var(--border);
    border-radius:var(--radius);
    padding:32px 26px 26px;
    height:100%;
    transition:var(--transition);
    counter-increment:step;
}
.step-item:hover{
    box-shadow:var(--shadow-hover);
    transform:translateY(-5px);
}
.step-num{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    width:44px;
    height:44px;
    border-radius:12px;
    background:var(--primary);
    color:#fff;
    font-weight:800;
    font-size:17px;
    margin-bottom:20px;
    box-shadow:0 8px 20px rgba(15,76,129,.25);
}
.step-item:nth-child(2) .step-num{background:var(--accent)}
.step-item:nth-child(3) .step-num{background:#F39C12}
.step-item:nth-child(4) .step-num{background:#8E6BB1}
.step-item h3{
    font-size:18px;
    font-weight:700;
    margin-bottom:10px;
}
.step-item .step-tag{
    display:inline-block;
    font-size:12px;
    font-weight:600;
    color:var(--accent-dark);
    background:var(--accent-light);
    border-radius:20px;
    padding:4px 12px;
    margin-top:12px;
}
.step-item p{
    color:var(--text-muted);
    font-size:14.5px;
    line-height:1.7;
    margin-bottom:0;
}

/* ===== FAQ ===== */
.accordion{
    max-width:880px;
    margin:0 auto;
}
.accordion-item{
    border:1px solid var(--border);
    border-radius:14px !important;
    margin-bottom:14px;
    overflow:hidden;
    box-shadow:none;
    background:var(--card-bg);
}
.accordion-button{
    font-size:16px;
    font-weight:600;
    color:var(--text);
    padding:18px 22px;
    background:var(--card-bg);
    transition:var(--transition);
}
.accordion-button:not(.collapsed){
    background:var(--primary-light);
    color:var(--primary);
    box-shadow:none;
}
.accordion-button:focus{
    box-shadow:none;
    border-color:var(--border);
}
.accordion-button::after{
    flex-shrink:0;
}
.accordion-body{
    color:var(--text-muted);
    font-size:14.5px;
    line-height:1.8;
    padding:6px 22px 20px;
    background:var(--card-bg);
    border-top:1px solid var(--border);
}

/* ===== CTA ===== */
.cta-section{
    padding:60px 0 80px;
}
.cta-card{
    background:linear-gradient(135deg,rgba(11,61,104,.95),rgba(15,76,129,.88)),url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
    border-radius:var(--radius);
    padding:52px 48px;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:24px;
    flex-wrap:wrap;
    color:#fff;
    box-shadow:0 20px 50px rgba(11,61,104,.25);
}
.cta-content h2{
    font-size:26px;
    font-weight:800;
    margin-bottom:8px;
}
.cta-content p{
    opacity:.9;
    margin-bottom:0;
    font-size:15px;
    max-width:460px;
}

/* ===== 页脚 ===== */
.site-footer{
    background:var(--card-bg);
    border-top:1px solid var(--border);
    padding:60px 0 0;
    margin-left:280px;
}
.site-footer .container{
    max-width:1120px;
}
.footer-brand{
    display:flex;
    flex-direction:column;
}
.footer-brand p{
    color:var(--text-muted);
    font-size:14px;
    line-height:1.7;
    max-width:300px;
    margin-top:14px;
    margin-bottom:0;
}
.footer-links,
.footer-info{
    display:flex;
    flex-direction:column;
}
.footer-links h3,
.footer-info h3{
    font-size:16px;
    font-weight:700;
    color:var(--text);
    margin-bottom:18px;
    position:relative;
    padding-bottom:10px;
}
.footer-links h3::after,
.footer-info h3::after{
    content:'';
    position:absolute;
    left:0;bottom:0;
    width:28px;
    height:3px;
    border-radius:3px;
    background:var(--accent);
}
.footer-links a{
    color:var(--text-muted);
    font-size:14px;
    padding:6px 0;
    transition:var(--transition);
}
.footer-links a:hover{
    color:var(--primary);
    padding-left:6px;
}
.footer-info p{
    color:var(--text-muted);
    font-size:14px;
    margin-bottom:8px;
    line-height:1.6;
}
.footer-bottom{
    border-top:1px solid var(--border);
    margin-top:46px;
    padding:20px 0;
    text-align:center;
}
.footer-bottom p{
    color:var(--text-muted);
    font-size:13px;
    margin-bottom:0;
}

/* ===== 响应式 ===== */
@media (max-width:1199.98px){
    .site-sidebar{width:260px}
    .site-main{margin-left:260px}
    .site-footer{margin-left:260px}
    .hero-content h1{font-size:40px}
}
@media (max-width:991.98px){
    .site-sidebar{display:none}
    .site-main{margin-left:0}
    .site-footer{margin-left:0}
    .mobile-header{display:block}
    .hero{padding:72px 0 64px}
    .hero-content h1{font-size:34px}
    .section{padding:60px 0}
    .section-title{font-size:28px}
    .cta-card{padding:38px 30px}
    .footer-brand p{max-width:100%}
}
@media (max-width:767.98px){
    .hero{padding:56px 0 48px}
    .hero-content h1{font-size:30px}
    .hero-actions{gap:10px}
    .hero-actions .btn{width:100%}
    .hero-meta{gap:14px}
    .section-title{font-size:25px}
    .section-desc{font-size:15px}
    .compliance-body{padding:28px 22px}
    .compliance-image{min-height:260px}
    .cta-card{padding:32px 24px}
    .cta-content h2{font-size:22px}
    .cta-card .btn{width:100%}
    .footer-bottom p{font-size:12px}
}
@media (max-width:575.98px){
    .container{padding-left:16px;padding-right:16px}
    .hero-content h1{font-size:27px}
    .hero .lead{font-size:15px}
    .section{padding:48px 0}
    .step-item{padding:26px 20px}
}