/* roulang page: index */
:root{
    --bg-deep:#0A1428;
    --bg-secondary:#101E33;
    --bg-elevated:rgba(255,255,255,0.03);
    --bg-nav:#0D1A2A;
    --bg-footer:#071020;
    --primary:#1CA3C6;
    --primary-dark:#167FA8;
    --accent:#D9A441;
    --text-main:#e8eef5;
    --text-weak:rgba(255,255,255,0.55);
    --border-glass:rgba(255,255,255,0.10);
    --border-hover:rgba(28,163,198,0.4);
    --glass-bg:rgba(255,255,255,0.05);
    --shadow-card:0 4px 24px rgba(0,0,0,0.25);
    --shadow-hover:0 8px 32px rgba(0,0,0,0.40);
    --glow-primary:0 0 24px rgba(28,163,198,0.35);
    --radius-card:16px;
    --radius-small:10px;
    --radius-btn:8px;
    --radius-badge:999px;
    --text-13:13px;
    --text-15:15px;
    --text-16:16px;
    --text-20:20px;
    --text-22:22px;
    --text-32:32px;
    --text-40:40px;
    --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;
}
*{
    box-sizing:border-box;
    margin:0;
    padding:0;
}
html{
    scroll-behavior:smooth;
}
body{
    font-family:var(--font-sans);
    background:var(--bg-deep);
    color:var(--text-main);
    line-height:1.7;
    font-size:var(--text-15);
    -webkit-font-smoothing:antialiased;
}
a{
    color:var(--primary);
    text-decoration:none;
    transition:color .25s ease;
}
a:hover{
    color:#4dc4e0;
}
img{
    max-width:100%;
    height:auto;
    display:block;
}
.container-custom{
    max-width:1200px;
    margin:0 auto;
    padding:0 24px;
    width:100%;
}
.grid-x{
    margin-left:-12px;
    margin-right:-12px;
}
.cell{
    padding-left:12px;
    padding-right:12px;
}
.left-nav{
    position:fixed;
    top:0;
    left:0;
    width:240px;
    height:100vh;
    background:var(--bg-nav);
    border-right:1px solid rgba(255,255,255,0.08);
    display:flex;
    flex-direction:column;
    z-index:999;
    padding:28px 20px;
    transition:transform .3s ease;
}
.left-nav .brand{
    display:flex;
    align-items:center;
    gap:12px;
    padding:8px 4px 28px;
    border-bottom:1px solid rgba(255,255,255,0.06);
    margin-bottom:24px;
}
.brand-icon{
    width:40px;
    height:40px;
    border-radius:12px;
    background:linear-gradient(135deg,rgba(28,163,198,0.3),rgba(217,164,65,0.2));
    border:1px solid rgba(255,255,255,0.15);
    backdrop-filter:blur(12px);
    display:flex;
    align-items:center;
    justify-content:center;
    font-size:20px;
    color:var(--primary);
    flex-shrink:0;
}
.brand-text{
    font-size:18px;
    font-weight:700;
    color:var(--text-main);
    letter-spacing:0.5px;
    line-height:1.4;
}
.left-nav .nav-list{
    list-style:none;
    flex:1;
    display:flex;
    flex-direction:column;
    gap:8px;
}
.left-nav .nav-list li{
    margin:0;
}
.left-nav .nav-list a{
    display:flex;
    align-items:center;
    gap:12px;
    padding:12px 14px;
    border-radius:10px;
    color:rgba(255,255,255,0.75);
    font-size:var(--text-15);
    font-weight:500;
    transition:all .25s ease;
    border-left:3px solid transparent;
    position:relative;
}
.left-nav .nav-list a i{
    width:20px;
    text-align:center;
    font-size:16px;
    opacity:0.8;
}
.left-nav .nav-list a:hover{
    background:rgba(28,163,198,0.08);
    color:#fff;
}
.left-nav .nav-list a.active{
    background:rgba(28,163,198,0.12);
    border-left-color:var(--primary);
    color:#fff;
}
.nav-contact{
    padding:16px 4px;
    border-top:1px solid rgba(255,255,255,0.06);
}
.nav-contact p{
    color:rgba(255,255,255,0.5);
    font-size:13px;
    margin:4px 0;
}
.nav-contact i{
    margin-right:6px;
    color:var(--primary);
}
.main-content{
    margin-left:240px;
    min-height:100vh;
    display:flex;
    flex-direction:column;
}
.top-bar{
    display:none;
}
#page-content{
    flex:1;
}
.hero-section{
    position:relative;
    min-height:580px;
    display:flex;
    align-items:center;
    background:linear-gradient(135deg,rgba(10,20,40,0.92) 0%,rgba(10,20,40,0.7) 50%,rgba(10,20,40,0.4) 100%),url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
    padding:80px 0;
}
.hero-section::after{
    content:'';
    position:absolute;
    bottom:0;
    left:0;
    right:0;
    height:120px;
    background:linear-gradient(to bottom,transparent,var(--bg-deep));
    pointer-events:none;
}
.hero-content{
    max-width:700px;
    padding:20px 0;
    position:relative;
    z-index:2;
}
.hero-content .hero-badge{
    display:inline-block;
    background:rgba(217,164,65,0.15);
    border:1px solid rgba(217,164,65,0.3);
    color:var(--accent);
    padding:6px 16px;
    border-radius:999px;
    font-size:13px;
    letter-spacing:1px;
    margin-bottom:24px;
}
.hero-content h1{
    font-size:48px;
    font-weight:700;
    color:#fff;
    line-height:1.3;
    margin-bottom:20px;
    letter-spacing:1px;
}
.hero-content .hero-sub{
    font-size:18px;
    color:rgba(255,255,255,0.8);
    line-height:1.8;
    margin-bottom:32px;
    max-width:540px;
}
.hero-btns{
    display:flex;
    gap:16px;
    flex-wrap:wrap;
}
.btn{
    display:inline-flex;
    align-items:center;
    gap:8px;
    padding:14px 32px;
    border-radius:8px;
    font-size:15px;
    font-weight:600;
    border:none;
    cursor:pointer;
    transition:all .3s ease;
    line-height:1;
}
.btn-primary{
    background:linear-gradient(135deg,var(--primary),var(--primary-dark));
    color:#fff;
    box-shadow:0 0 24px rgba(28,163,198,0.35);
}
.btn-primary:hover{
    background:linear-gradient(135deg,#3bc3e6,#1ca3c6);
    box-shadow:0 0 36px rgba(28,163,198,0.5);
    transform:translateY(-2px);
    color:#fff;
}
.btn-outline{
    background:rgba(255,255,255,0.05);
    border:1px solid rgba(255,255,255,0.2);
    color:rgba(255,255,255,0.85);
    backdrop-filter:blur(12px);
}
.btn-outline:hover{
    background:rgba(255,255,255,0.1);
    border-color:rgba(255,255,255,0.4);
    color:#fff;
    transform:translateY(-2px);
}
.section-block{
    padding:80px 0;
    position:relative;
}
.section-block.bg-secondary{
    background:var(--bg-secondary);
}
.section-block.bg-deep{
    background:var(--bg-deep);
}
.section-header{
    text-align:center;
    margin-bottom:48px;
}
.section-header .section-tag{
    display:inline-block;
    color:var(--accent);
    font-size:13px;
    letter-spacing:2px;
    text-transform:uppercase;
    margin-bottom:12px;
    font-weight:600;
}
.section-header h2{
    font-size:32px;
    font-weight:700;
    color:#fff;
    line-height:1.4;
    margin-bottom:12px;
}
.section-header p{
    max-width:600px;
    margin:0 auto;
    color:var(--text-weak);
    font-size:15px;
    line-height:1.7;
}
.directory-card{
    background:var(--glass-bg);
    border:1px solid var(--border-glass);
    border-radius:var(--radius-card);
    padding:32px 24px;
    height:100%;
    transition:all .3s ease;
    backdrop-filter:blur(12px);
    position:relative;
    overflow:hidden;
}
.directory-card::before{
    content:'';
    position:absolute;
    top:0;
    left:24px;
    right:24px;
    height:1px;
    background:rgba(255,255,255,0.12);
}
.directory-card:hover{
    transform:translateY(-6px);
    box-shadow:var(--shadow-hover),0 0 30px rgba(28,163,198,0.1);
    border-color:var(--border-hover);
}
.directory-card .card-icon{
    width:56px;
    height:56px;
    border-radius:14px;
    display:flex;
    align-items:center;
    justify-content:center;
    font-size:22px;
    margin-bottom:20px;
    background:linear-gradient(135deg,rgba(28,163,198,0.2),rgba(28,163,198,0.05));
    border:1px solid rgba(28,163,198,0.3);
    color:var(--primary);
}
.directory-card h3{
    font-size:20px;
    font-weight:600;
    color:#fff;
    margin-bottom:10px;
}
.directory-card p{
    color:var(--text-weak);
    font-size:14px;
    line-height:1.7;
    margin-bottom:16px;
}
.directory-card .card-link{
    color:var(--primary);
    font-size:14px;
    font-weight:500;
    display:inline-flex;
    align-items:center;
    gap:6px;
    transition:gap .3s ease;
}
.directory-card .card-link:hover{
    gap:10px;
    color:#4dc4e0;
}
.news-card{
    background:var(--glass-bg);
    border:1px solid var(--border-glass);
    border-radius:var(--radius-card);
    padding:20px;
    transition:all .3s ease;
    backdrop-filter:blur(12px);
    display:flex;
    gap:20px;
    height:100%;
}
.news-card:hover{
    border-color:var(--border-hover);
    box-shadow:var(--shadow-card);
    transform:translateY(-2px);
}
.news-card .news-thumb{
    width:120px;
    height:90px;
    border-radius:8px;
    object-fit:cover;
    flex-shrink:0;
    overflow:hidden;
}
.news-card .news-thumb img{
    width:100%;
    height:100%;
    object-fit:cover;
    transition:transform .4s ease;
}
.news-card:hover .news-thumb img{
    transform:scale(1.04);
}
.news-card .news-body{
    flex:1;
    display:flex;
    flex-direction:column;
    min-width:0;
}
.news-card .news-meta{
    display:flex;
    align-items:center;
    gap:10px;
    margin-bottom:8px;
    flex-wrap:wrap;
}
.badge-accent{
    background:rgba(217,164,65,0.15);
    color:var(--accent);
    padding:2px 10px;
    border-radius:999px;
    font-size:12px;
    font-weight:500;
    white-space:nowrap;
}
.news-card .news-time{
    font-size:13px;
    color:rgba(255,255,255,0.5);
    display:inline-flex;
    align-items:center;
    gap:5px;
}
.news-card .news-time i{
    font-size:12px;
}
.news-card h3{
    font-size:17px;
    font-weight:600;
    color:#fff;
    line-height:1.5;
    margin-bottom:6px;
    transition:all .3s ease;
    overflow:hidden;
    text-overflow:ellipsis;
    white-space:nowrap;
}
.news-card h3 a{
    color:#fff;
}
.news-card h3 a:hover{
    color:var(--primary);
    margin-left:2px;
}
.news-card .news-summary{
    color:var(--text-weak);
    font-size:14px;
    line-height:1.6;
    display:-webkit-box;
    -webkit-line-clamp:2;
    -webkit-box-orient:vertical;
    overflow:hidden;
    margin-bottom:8px;
}
.news-card .read-more{
    font-size:13px;
    color:var(--primary);
    font-weight:500;
}
.news-empty{
    background:var(--glass-bg);
    border:1px dashed rgba(255,255,255,0.2);
    border-radius:var(--radius-card);
    padding:32px;
    text-align:center;
    color:var(--text-weak);
}
.alt-feature{
    display:flex;
    align-items:center;
    gap:60px;
    margin-bottom:80px;
}
.alt-feature:last-child{
    margin-bottom:0;
}
.alt-feature.reverse{
    flex-direction:row-reverse;
}
.alt-feature .feature-image{
    flex:0 0 46%;
    border-radius:16px;
    overflow:hidden;
    box-shadow:var(--shadow-card);
}
.alt-feature .feature-image img{
    width:100%;
    height:100%;
    object-fit:cover;
    transition:transform .5s ease;
}
.alt-feature .feature-image:hover img{
    transform:scale(1.03);
}
.alt-feature .feature-content{
    flex:1;
}
.alt-feature .feature-content h2{
    font-size:28px;
    font-weight:700;
    color:#fff;
    line-height:1.4;
    margin-bottom:16px;
}
.alt-feature .feature-content p{
    color:var(--text-weak);
    font-size:15px;
    line-height:1.8;
    margin-bottom:16px;
}
.feature-link{
    display:inline-flex;
    align-items:center;
    gap:8px;
    color:var(--primary);
    font-weight:500;
    font-size:15px;
    transition:gap .3s ease;
}
.feature-link:hover{
    gap:12px;
    color:#4dc4e0;
}
.recommend-card{
    background:var(--glass-bg);
    border:1px solid var(--border-glass);
    border-radius:var(--radius-card);
    overflow:hidden;
    transition:all .3s ease;
    backdrop-filter:blur(12px);
    height:100%;
    display:flex;
    flex-direction:column;
}
.recommend-card:hover{
    transform:translateY(-4px);
    box-shadow:var(--shadow-hover);
    border-color:var(--border-hover);
}
.recommend-card .cover-wrap{
    height:200px;
    overflow:hidden;
    position:relative;
    background:var(--bg-secondary);
}
.recommend-card .cover-wrap img{
    width:100%;
    height:100%;
    object-fit:cover;
    transition:transform .5s ease;
}
.recommend-card:hover .cover-wrap img{
    transform:scale(1.03);
}
.recommend-card .card-body{
    padding:20px 20px 24px;
    flex:1;
    display:flex;
    flex-direction:column;
}
.recommend-card h3{
    font-size:18px;
    font-weight:600;
    color:#fff;
    margin-bottom:8px;
    line-height:1.5;
}
.recommend-card p{
    color:var(--text-weak);
    font-size:14px;
    line-height:1.6;
    margin-bottom:12px;
    flex:1;
    display:-webkit-box;
    -webkit-line-clamp:2;
    -webkit-box-orient:vertical;
    overflow:hidden;
}
.recommend-card .time{
    font-size:13px;
    color:rgba(255,255,255,0.4);
    display:flex;
    align-items:center;
    gap:5px;
}
.cta-card{
    background:var(--glass-bg);
    border:1px solid var(--border-glass);
    border-radius:20px;
    padding:60px 48px;
    text-align:center;
    backdrop-filter:blur(12px);
    position:relative;
    overflow:hidden;
}
.cta-card::before{
    content:'';
    position:absolute;
    top:0;
    left:0;
    right:0;
    height:1px;
    background:rgba(255,255,255,0.15);
}
.cta-card h2{
    font-size:30px;
    font-weight:700;
    color:#fff;
    margin-bottom:12px;
}
.cta-card p{
    color:var(--text-weak);
    font-size:15px;
    margin-bottom:32px;
    max-width:600px;
    margin-left:auto;
    margin-right:auto;
}
.cta-actions{
    display:flex;
    gap:16px;
    justify-content:center;
    align-items:center;
    flex-wrap:wrap;
}
.copy-link-wrap{
    display:flex;
    gap:0;
    align-items:stretch;
    background:rgba(255,255,255,0.06);
    border:1px solid rgba(255,255,255,0.12);
    border-radius:8px;
    padding:4px;
    max-width:380px;
    width:100%;
}
.copy-link-wrap input{
    flex:1;
    background:transparent;
    border:none;
    color:var(--text-main);
    font-size:13px;
    padding:0 14px;
    outline:none;
    height:38px;
    min-width:0;
}
.copy-link-wrap button{
    background:rgba(28,163,198,0.2);
    border:1px solid rgba(28,163,198,0.3);
    color:var(--primary);
    border-radius:6px;
    padding:0 16px;
    cursor:pointer;
    font-size:13px;
    transition:all .3s ease;
    white-space:nowrap;
    height:38px;
}
.copy-link-wrap button:hover{
    background:rgba(28,163,198,0.4);
    color:#fff;
}
.faq-accordion{
    max-width:800px;
    margin:0 auto;
}
.faq-item{
    background:var(--glass-bg);
    border:1px solid var(--border-glass);
    border-radius:12px;
    margin-bottom:16px;
    overflow:hidden;
    transition:all .3s ease;
}
.faq-item:hover{
    border-color:rgba(28,163,198,0.3);
}
.faq-item details{
    padding:0 24px;
}
.faq-item summary{
    padding:20px 0;
    cursor:pointer;
    font-size:16px;
    font-weight:600;
    color:#fff;
    display:flex;
    justify-content:space-between;
    align-items:center;
    list-style:none;
    transition:color .3s ease;
}
.faq-item summary::-webkit-details-marker{
    display:none;
}
.faq-item summary::after{
    content:'\f107';
    font-family:"Font Awesome 6 Free";
    font-weight:900;
    transition:transform .3s ease;
    color:var(--primary);
    font-size:18px;
}
.faq-item details[open] summary::after{
    transform:rotate(180deg);
}
.faq-item .faq-answer{
    padding-bottom:20px;
    color:var(--text-weak);
    font-size:15px;
    line-height:1.7;
}
.site-footer{
    background:var(--bg-footer);
    border-top:1px solid rgba(255,255,255,0.06);
    padding:60px 0 24px;
}
.footer-grid{
    display:grid;
    grid-template-columns:2fr 1fr 1fr;
    gap:48px;
    margin-bottom:48px;
}
.footer-brand p{
    color:rgba(255,255,255,0.5);
    font-size:14px;
    line-height:1.7;
    margin-top:16px;
    max-width:360px;
}
.footer-links h4{
    color:#fff;
    font-size:16px;
    font-weight:600;
    margin-bottom:20px;
}
.footer-links ul{
    list-style:none;
}
.footer-links li{
    margin-bottom:10px;
}
.footer-links a{
    color:rgba(255,255,255,0.55);
    font-size:14px;
    transition:all .3s ease;
}
.footer-links a:hover{
    color:var(--primary);
}
.footer-contact p{
    color:rgba(255,255,255,0.55);
    font-size:14px;
    margin-bottom:12px;
}
.footer-contact i{
    color:var(--primary);
    margin-right:8px;
    width:16px;
}
.copyright{
    border-top:1px solid rgba(255,255,255,0.06);
    padding-top:24px;
    text-align:center;
    color:rgba(255,255,255,0.4);
    font-size:13px;
}
.off-canvas{
    background:var(--bg-nav);
}
.off-canvas .accent-label{
    color:var(--accent);
    font-size:12px;
    letter-spacing:1px;
    text-transform:uppercase;
    margin:24px 0 12px;
    padding:0 16px;
}
.off-canvas .nav-list{
    list-style:none;
}
.off-canvas .nav-list a{
    display:flex;
    align-items:center;
    gap:12px;
    padding:14px 16px;
    color:rgba(255,255,255,0.75);
    font-size:15px;
    transition:all .25s ease;
    border-left:3px solid transparent;
}
.off-canvas .nav-list a:hover,
.off-canvas .nav-list a.active{
    background:rgba(28,163,198,0.12);
    border-left-color:var(--primary);
    color:#fff;
}
.off-canvas .nav-list a i{
    width:20px;
    text-align:center;
    font-size:16px;
}
@media screen and (max-width:1023px){
    .left-nav{
        transform:translateX(-100%);
        display:none;
    }
    .main-content{
        margin-left:0;
    }
    .top-bar{
        display:flex;
        position:fixed;
        top:0;
        left:0;
        right:0;
        height:60px;
        background:rgba(10,20,40,0.85);
        backdrop-filter:blur(16px);
        align-items:center;
        justify-content:space-between;
        padding:0 20px;
        z-index:1000;
        border-bottom:1px solid rgba(255,255,255,0.08);
    }
    .top-bar .brand{
        display:flex;
        align-items:center;
        gap:10px;
        font-size:16px;
        font-weight:700;
        color:#fff;
    }
    .top-bar .brand .brand-icon{
        width:32px;
        height:32px;
        font-size:16px;
        border-radius:8px;
    }
    .top-bar .menu-toggle{
        background:rgba(255,255,255,0.1);
        border:1px solid rgba(255,255,255,0.15);
        width:40px;
        height:40px;
        border-radius:8px;
        display:flex;
        align-items:center;
        justify-content:center;
        cursor:pointer;
        color:#fff;
        font-size:18px;
        transition:all .3s ease;
    }
    .top-bar .menu-toggle:hover{
        background:rgba(28,163,198,0.3);
    }
    #page-content{
        padding-top:60px;
    }
    .hero-section{
        min-height:420px;
        padding:60px 0;
    }
    .hero-content h1{
        font-size:32px;
    }
    .hero-content .hero-sub{
        font-size:16px;
    }
    .section-block{
        padding:56px 0;
    }
    .section-header h2{
        font-size:26px;
    }
    .alt-feature{
        flex-direction:column;
        gap:24px;
    }
    .alt-feature.reverse{
        flex-direction:column;
    }
    .alt-feature .feature-image{
        width:100%;
        flex:none;
    }
    .footer-grid{
        grid-template-columns:1fr;
        gap:32px;
    }
    .cta-card{
        padding:40px 24px;
    }
}
@media screen and (max-width:640px){
    .hero-content h1{
        font-size:28px;
    }
    .hero-content .hero-sub{
        font-size:15px;
    }
    .hero-btns{
        flex-direction:column;
        align-items:stretch;
    }
    .hero-btns .btn{
        justify-content:center;
    }
    .news-card{
        flex-direction:column;
    }
    .news-card .news-thumb{
        width:100%;
        height:180px;
    }
    .section-header h2{
        font-size:24px;
    }
    .container-custom{
        padding:0 16px;
    }
    .cta-actions{
        flex-direction:column;
        align-items:stretch;
    }
    .copy-link-wrap{
        width:100%;
        flex-direction:column;
        gap:8px;
        background:transparent;
        border:none;
        padding:0;
    }
    .copy-link-wrap input{
        height:44px;
        background:rgba(255,255,255,0.06);
        border:1px solid rgba(255,255,255,0.12);
        border-radius:8px;
        padding:0 14px;
        width:100%;
    }
    .copy-link-wrap button{
        height:44px;
        width:100%;
    }
    .hero-badge{
        font-size:12px;
        padding:4px 12px;
    }
    .btn{
        padding:14px 24px;
        font-size:14px;
    }
    .faq-item details{
        padding:0 16px;
    }
    .faq-item summary{
        font-size:15px;
    }
}
@media screen and (max-width:520px){
    .hero-content{
        padding:10px 0;
    }
    .hero-content h1{
        font-size:24px;
        line-height:1.4;
    }
    .hero-content .hero-sub{
        font-size:14px;
        line-height:1.7;
    }
    .section-block{
        padding:48px 0;
    }
    .section-header{
        margin-bottom:32px;
    }
    .section-header h2{
        font-size:22px;
    }
    .directory-card{
        padding:24px 20px;
    }
    .recommend-card .cover-wrap{
        height:160px;
    }
    .footer-grid{
        grid-template-columns:1fr;
    }
}

/* roulang page: article */
:root {
            --bg-dark: #0A1428;
            --bg-secondary: #101E33;
            --bg-sidebar: #0D1A2A;
            --bg-footer: #071020;
            --primary: #1CA3C6;
            --primary-dark: #167FA8;
            --accent: #D9A441;
            --text-main: #FFFFFF;
            --text-muted: rgba(255, 255, 255, 0.55);
            --text-soft: rgba(255, 255, 255, 0.8);
            --border-glass: rgba(255, 255, 255, 0.10);
            --card-bg: rgba(255, 255, 255, 0.05);
            --radius-large: 16px;
            --radius-mid: 10px;
            --radius-sm: 8px;
            --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.25);
            --shadow-hover: 0 8px 32px rgba(0, 0, 0, 0.40), 0 0 20px rgba(28, 163, 198, 0.12);
            --font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", Arial, sans-serif;
            --sidebar-width: 240px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-family);
            background: var(--bg-dark);
            color: var(--text-main);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.25s ease;
        }

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

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            color: inherit;
        }

        input,
        textarea {
            font-family: inherit;
        }

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

        /* ===== 左侧竖向导航 ===== */
        .site-sidebar {
            position: fixed;
            left: 0;
            top: 0;
            width: var(--sidebar-width);
            height: 100vh;
            background: var(--bg-sidebar);
            border-right: 1px solid rgba(255, 255, 255, 0.08);
            display: flex;
            flex-direction: column;
            z-index: 1000;
            transition: transform 0.3s ease;
        }

        .sidebar-brand {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 28px 24px 20px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .brand-icon {
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: rgba(255, 255, 255, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 18px;
            border: 1px solid rgba(255, 255, 255, 0.10);
            box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.12);
        }

        .brand-text {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-main);
            letter-spacing: 0.5px;
        }

        .sidebar-nav {
            flex: 1;
            padding: 20px 14px;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .nav-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 16px;
            border-radius: var(--radius-mid);
            font-size: 15px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.75);
            position: relative;
            transition: background 0.25s ease, color 0.25s ease, left 0.25s ease;
        }

        .nav-item i {
            width: 20px;
            text-align: center;
            color: rgba(255, 255, 255, 0.5);
            transition: color 0.25s ease;
        }

        .nav-item:hover {
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-main);
        }

        .nav-item:hover i {
            color: var(--primary);
        }

        .nav-item.active {
            background: rgba(28, 163, 198, 0.12);
            color: var(--text-main);
            font-weight: 600;
        }

        .nav-item.active::before {
            content: '';
            position: absolute;
            left: 0;
            top: 20%;
            height: 60%;
            width: 3px;
            border-radius: 0 3px 3px 0;
            background: var(--primary);
        }

        .nav-item.active i {
            color: var(--primary);
        }

        .sidebar-contact {
            padding: 20px 24px 28px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }

        .sidebar-contact p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 8px;
        }

        .sidebar-contact p:last-child {
            margin-bottom: 0;
        }

        .sidebar-contact i {
            width: 16px;
            color: var(--accent);
        }

        /* ===== 移动端顶部导航 ===== */
        .mobile-header {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 60px;
            background: rgba(10, 20, 40, 0.85);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            align-items: center;
            justify-content: space-between;
            padding: 0 20px;
            z-index: 1100;
        }

        .mobile-brand {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .mobile-header .brand-icon {
            width: 34px;
            height: 34px;
            font-size: 15px;
        }

        .mobile-header .brand-text {
            font-size: 17px;
        }

        .hamburger {
            width: 42px;
            height: 42px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 8px;
            color: var(--text-main);
            font-size: 20px;
            transition: background 0.2s ease;
        }

        .hamburger:hover {
            background: rgba(255, 255, 255, 0.06);
        }

        .mobile-nav-overlay {
            position: fixed;
            inset: 0;
            background: rgba(10, 20, 40, 0.97);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            z-index: 1200;
            display: flex;
            flex-direction: column;
            padding: 20px;
            transform: translateY(-100%);
            transition: transform 0.35s ease;
            visibility: hidden;
        }

        .mobile-nav-overlay.open {
            transform: translateY(0);
            visibility: visible;
        }

        .mobile-nav-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-bottom: 20px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .close-btn {
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 8px;
            color: var(--text-muted);
            font-size: 20px;
        }

        .close-btn:hover {
            color: var(--text-main);
            background: rgba(255, 255, 255, 0.06);
        }

        .mobile-nav-links {
            margin-top: 32px;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .mobile-nav-links .nav-item {
            padding: 16px 20px;
            font-size: 20px;
            border-radius: var(--radius-mid);
            background: rgba(255, 255, 255, 0.03);
            color: rgba(255, 255, 255, 0.85);
        }

        .mobile-nav-links .nav-item.active {
            background: rgba(28, 163, 198, 0.12);
            color: var(--text-main);
        }

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

        .mobile-nav-links .nav-item i {
            color: var(--primary);
        }

        /* ===== 主内容区 ===== */
        .main-wrapper {
            margin-left: var(--sidebar-width);
            min-height: 100vh;
            background: var(--bg-dark);
            position: relative;
            display: flex;
            flex-direction: column;
        }

        .main-wrapper::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -100px;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(28, 163, 198, 0.08) 0%, transparent 70%);
            pointer-events: none;
            z-index: 0;
        }

        .content-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 32px 40px 60px;
            width: 100%;
            position: relative;
            z-index: 1;
            flex: 1;
        }

        /* ===== 面包屑 ===== */
        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 32px;
            padding: 12px 0;
        }

        .breadcrumb a {
            color: rgba(255, 255, 255, 0.65);
            transition: color 0.2s ease;
        }

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

        .breadcrumb .sep {
            color: rgba(255, 255, 255, 0.3);
        }

        .breadcrumb .current {
            color: rgba(255, 255, 255, 0.85);
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
            max-width: 320px;
        }

        /* ===== 文章标题区 ===== */
        .article-header {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-large);
            padding: 40px 44px;
            margin-bottom: 32px;
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            box-shadow: var(--shadow-card), inset 0 1px 0 rgba(255, 255, 255, 0.08);
            position: relative;
        }

        .article-header::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 44px;
            width: 80px;
            height: 3px;
            border-radius: 3px 3px 0 0;
            background: linear-gradient(90deg, var(--primary), transparent);
        }

        .article-header h1 {
            font-size: 36px;
            font-weight: 700;
            line-height: 1.35;
            color: var(--text-main);
            margin-bottom: 18px;
            letter-spacing: -0.5px;
        }

        .article-meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 18px;
            font-size: 14px;
            color: var(--text-muted);
        }

        .article-meta .badge {
            background: rgba(217, 164, 65, 0.15);
            color: var(--accent);
            border-radius: 999px;
            padding: 4px 14px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.3px;
        }

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

        .article-meta .meta-item i {
            color: rgba(255, 255, 255, 0.35);
            font-size: 13px;
        }

        /* ===== 正文阅读区 ===== */
        .article-body-container {
            max-width: 860px;
            margin: 0 auto;
        }

        .article-body {
            max-width: 760px;
            margin: 0 auto;
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-large);
            padding: 48px 56px;
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            font-size: 16px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.88);
        }

        .article-body > *:first-child {
            margin-top: 0;
        }

        .article-body h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--text-main);
            margin: 2em 0 0.8em;
            line-height: 1.4;
            position: relative;
            padding-bottom: 10px;
        }

        .article-body h2::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 48px;
            height: 3px;
            border-radius: 3px;
            background: linear-gradient(90deg, var(--primary), transparent);
        }

        .article-body h3 {
            font-size: 21px;
            font-weight: 600;
            color: var(--text-main);
            margin: 1.8em 0 0.7em;
            line-height: 1.4;
        }

        .article-body p {
            margin-bottom: 1.5em;
        }

        .article-body a {
            color: var(--primary);
            border-bottom: 1px solid rgba(28, 163, 198, 0.3);
            padding-bottom: 1px;
        }

        .article-body a:hover {
            color: #5ecbe8;
            border-bottom-color: var(--primary);
        }

        .article-body img {
            width: 100%;
            height: auto;
            border-radius: 12px;
            margin: 24px 0;
            box-shadow: var(--shadow-card);
        }

        .article-body blockquote {
            border-left: 3px solid var(--primary);
            background: rgba(28, 163, 198, 0.06);
            padding: 20px 24px;
            margin: 24px 0;
            border-radius: 0 var(--radius-mid) var(--radius-mid) 0;
            color: rgba(255, 255, 255, 0.75);
            font-style: italic;
        }

        .article-body blockquote p:last-child {
            margin-bottom: 0;
        }

        .article-body ul,
        .article-body ol {
            padding-left: 24px;
            margin-bottom: 1.5em;
        }

        .article-body ul li,
        .article-body ol li {
            margin-bottom: 0.6em;
        }

        .article-body ul {
            list-style: disc;
        }

        .article-body ol {
            list-style: decimal;
        }

        .article-body strong {
            color: var(--text-main);
            font-weight: 700;
        }

        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 24px 0;
            font-size: 15px;
        }

        .article-body table th,
        .article-body table td {
            border: 1px solid var(--border-glass);
            padding: 12px 16px;
            text-align: left;
        }

        .article-body table th {
            background: rgba(28, 163, 198, 0.08);
            color: var(--text-main);
            font-weight: 600;
        }

        /* 无文章提示 */
        .article-empty {
            max-width: 760px;
            margin: 0 auto;
            text-align: center;
            padding: 80px 40px;
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-large);
            backdrop-filter: blur(8px);
        }

        .article-empty i {
            font-size: 48px;
            color: rgba(255, 255, 255, 0.2);
            margin-bottom: 20px;
            display: block;
        }

        .article-empty p {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.65);
            margin-bottom: 24px;
        }

        .article-empty .btn-back {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 24px;
            border-radius: var(--radius-sm);
            background: var(--primary-gradient, linear-gradient(135deg, #1CA3C6, #167FA8));
            color: #fff;
            font-size: 15px;
            font-weight: 500;
            transition: transform 0.2s ease, box-shadow 0.2s ease;
            box-shadow: 0 0 20px rgba(28, 163, 198, 0.25);
        }

        .article-empty .btn-back:hover {
            transform: translateY(-2px);
            box-shadow: 0 4px 28px rgba(28, 163, 198, 0.4);
        }

        /* ===== 标签与分享 ===== */
        .article-tools {
            max-width: 760px;
            margin: 32px auto 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 20px;
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-large);
            padding: 20px 28px;
            backdrop-filter: blur(8px);
        }

        .article-tags {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 10px;
        }

        .tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(217, 164, 65, 0.12);
            color: var(--accent);
            padding: 4px 14px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 500;
            transition: background 0.2s ease;
        }

        .tag:hover {
            background: rgba(217, 164, 65, 0.22);
        }

        .share-buttons {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .share-label {
            font-size: 14px;
            color: var(--text-muted);
        }

        .share-btn {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            color: rgba(255, 255, 255, 0.75);
            font-size: 15px;
            transition: all 0.25s ease;
        }

        .share-btn:hover {
            background: rgba(28, 163, 198, 0.15);
            color: var(--primary);
            border-color: rgba(28, 163, 198, 0.4);
            transform: translateY(-2px);
        }

        .share-btn.copied {
            background: rgba(28, 163, 198, 0.2);
            color: var(--primary);
            border-color: var(--primary);
        }

        /* ===== 相关推荐 ===== */
        .related-section {
            max-width: 1200px;
            margin: 56px auto 0;
        }

        .related-section .section-title {
            font-size: 24px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 24px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .related-section .section-title::before {
            content: '';
            width: 4px;
            height: 22px;
            border-radius: 4px;
            background: var(--primary);
        }

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

        .recommend-card {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-large);
            overflow: hidden;
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            box-shadow: var(--shadow-card), inset 0 1px 0 rgba(255, 255, 255, 0.06);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }

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

        .recommend-card .card-img {
            overflow: hidden;
            position: relative;
            aspect-ratio: 16 / 9;
        }

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

        .recommend-card:hover .card-img img {
            transform: scale(1.03);
        }

        .recommend-card .card-body {
            padding: 20px;
        }

        .recommend-card .card-body h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 8px;
            line-height: 1.4;
            transition: color 0.2s ease;
        }

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

        .recommend-card .card-body p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 12px;
        }

        .recommend-card .card-date {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
        }

        .recommend-card .card-date i {
            font-size: 12px;
        }

        /* ===== 返回入口 ===== */
        .back-entry {
            max-width: 760px;
            margin: 40px auto 0;
            text-align: center;
        }

        .back-entry a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 15px;
            color: rgba(255, 255, 255, 0.65);
            padding: 10px 24px;
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-sm);
            transition: all 0.25s ease;
        }

        .back-entry a:hover {
            color: var(--primary);
            border-color: rgba(28, 163, 198, 0.4);
            background: rgba(28, 163, 198, 0.06);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-footer);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 60px 0 32px;
            margin-top: 80px;
            position: relative;
            z-index: 1;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 48px;
            margin-bottom: 40px;
        }

        .footer-brand .brand {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 16px;
        }

        .footer-brand p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.5);
            line-height: 1.7;
            max-width: 360px;
        }

        .footer-links h4,
        .footer-contact h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 18px;
        }

        .footer-links ul {
            list-style: none;
            padding: 0;
        }

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

        .footer-links a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.55);
            transition: color 0.2s ease, padding-left 0.2s ease;
        }

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

        .footer-contact p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.55);
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .footer-contact i {
            color: var(--accent);
            width: 16px;
        }

        .copyright {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 24px;
            text-align: center;
        }

        .copyright p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.35);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1023.98px) {
            .site-sidebar {
                transform: translateX(-100%);
                visibility: hidden;
            }

            .mobile-header {
                display: flex;
            }

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

            .content-container {
                padding: 80px 24px 48px;
            }

            .article-header {
                padding: 32px 28px;
            }

            .article-header h1 {
                font-size: 28px;
            }

            .article-body {
                padding: 32px 24px;
            }

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

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 767.98px) {
            .content-container {
                padding: 76px 16px 40px;
            }

            .breadcrumb {
                font-size: 13px;
                margin-bottom: 20px;
            }

            .breadcrumb .current {
                max-width: 200px;
            }

            .article-header {
                padding: 28px 20px;
                border-radius: 14px;
            }

            .article-header h1 {
                font-size: 23px;
            }

            .article-meta {
                gap: 12px;
                font-size: 13px;
                flex-wrap: wrap;
            }

            .article-body {
                padding: 24px 18px;
                font-size: 15px;
                line-height: 1.75;
                border-radius: 14px;
            }

            .article-body h2 {
                font-size: 22px;
            }

            .article-body h3 {
                font-size: 19px;
            }

            .article-tools {
                padding: 16px 18px;
                flex-direction: column;
                align-items: flex-start;
                gap: 14px;
            }

            .share-buttons {
                width: 100%;
                justify-content: flex-start;
            }

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

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

            .footer-brand p {
                max-width: 100%;
            }

            .copyright p {
                font-size: 12px;
            }
        }

        @media (max-width: 520px) {
            .article-header h1 {
                font-size: 20px;
            }

            .article-meta {
                gap: 8px;
            }

            .article-meta .badge {
                font-size: 12px;
                padding: 3px 10px;
            }

            .article-body {
                padding: 20px 16px;
            }

            .article-tools {
                padding: 14px 16px;
            }

            .share-btn {
                width: 32px;
                height: 32px;
                font-size: 14px;
            }
        }

        /* ===== 焦点可见性 ===== */
        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
            border-radius: 4px;
        }

        /* ===== Foundation 覆盖 ===== */
        .grid-container,
        .grid-x,
        .cell {
            max-width: 100%;
        }

/* roulang page: category1 */
/* ============ 设计变量 ============ */
:root {
  --bg-primary: #0A1428;
  --bg-secondary: #101E33;
  --bg-deep: #071020;
  --bg-glass: rgba(255,255,255,0.05);
  --border-glass: rgba(255,255,255,0.10);
  --border-glass-hover: rgba(28,163,198,0.4);
  --primary: #1CA3C6;
  --primary-dark: #167FA8;
  --accent: #D9A441;
  --text-primary: #FFFFFF;
  --text-secondary: rgba(255,255,255,0.8);
  --text-muted: rgba(255,255,255,0.55);
  --text-faint: rgba(255,255,255,0.35);
  --radius-lg: 16px;
  --radius-md: 10px;
  --radius-sm: 8px;
  --radius-pill: 999px;
  --shadow-card: 0 4px 24px rgba(0,0,0,0.25);
  --shadow-hover: 0 8px 32px rgba(0,0,0,0.40);
  --glow-primary: 0 0 24px rgba(28,163,198,0.35);
  --font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", Arial, sans-serif;
  --sidebar-width: 240px;
  --container-width: 1200px;
  --section-padding: 100px;
}

/* ============ 基础 Reset ============ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: var(--font-family);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a {
  color: inherit;
  text-decoration: none;
  transition: color 0.3s ease;
}
img {
  max-width: 100%;
  display: block;
  border-radius: 12px;
}
button {
  font-family: var(--font-family);
  cursor: pointer;
  border: none;
  background: none;
}
input {
  font-family: var(--font-family);
}
ul {
  list-style: none;
}
h1, h2, h3, h4, h5 {
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: 0.01em;
}
h1 {
  font-size: 40px;
}
h2 {
  font-size: 30px;
}
h3 {
  font-size: 22px;
  font-weight: 600;
}
p {
  color: var(--text-secondary);
}

/* ============ 容器 ============ */
.container-custom {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 32px;
}
.section-padding {
  padding: var(--section-padding) 0;
}
.section-head {
  margin-bottom: 40px;
}
.section-head h2 {
  margin-bottom: 8px;
  position: relative;
  display: inline-block;
}
.section-head h2::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 0;
  width: 48px;
  height: 3px;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--primary), transparent);
}
.section-head p {
  color: var(--text-muted);
  font-size: 15px;
  margin-top: 14px;
}

/* ============ 左侧竖向导航 ============ */
.side-navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--sidebar-width);
  height: 100vh;
  background: #0D1A2A;
  border-right: 1px solid rgba(255,255,255,0.08);
  display: flex;
  flex-direction: column;
  z-index: 100;
}
.side-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 28px 24px 20px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.brand-icon {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 18px;
  flex-shrink: 0;
}
.brand-text {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: 0.02em;
}
.side-nav {
  flex: 1;
  padding: 24px 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.nav-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 16px;
  border-radius: var(--radius-md);
  color: var(--text-muted);
  font-size: 15px;
  font-weight: 500;
  position: relative;
  transition: all 0.3s ease;
}
.nav-item i {
  width: 20px;
  text-align: center;
  font-size: 15px;
}
.nav-item:hover {
  color: var(--text-primary);
  background: rgba(255,255,255,0.04);
}
.nav-item.active {
  color: var(--text-primary);
  background: rgba(28,163,198,0.12);
}
.nav-item.active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 24px;
  border-radius: 0 3px 3px 0;
  background: var(--primary);
}
.side-contact {
  padding: 20px 24px;
  border-top: 1px solid rgba(255,255,255,0.06);
}
.side-contact p {
  font-size: 13px;
  color: rgba(255,255,255,0.5);
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.side-contact i {
  font-size: 12px;
  color: var(--accent);
}

/* ============ 移动端顶部导航 ============ */
.mobile-topbar {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 60px;
  background: rgba(10,20,40,0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255,255,255,0.08);
  z-index: 100;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
}
.mobile-brand {
  display: flex;
  align-items: center;
  gap: 10px;
}
.mobile-brand .brand-icon {
  width: 36px;
  height: 36px;
  font-size: 15px;
}
.mobile-brand span {
  font-size: 17px;
  font-weight: 700;
}
.hamburger-btn {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  color: var(--text-primary);
  font-size: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
}
.hamburger-btn:hover {
  border-color: rgba(28,163,198,0.4);
  color: var(--primary);
}
.mobile-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(10,20,40,0.98);
  z-index: 99;
  flex-direction: column;
  padding: 100px 40px 40px;
  gap: 8px;
}
.mobile-overlay.open {
  display: flex;
}
.mobile-nav-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 20px;
  font-size: 20px;
  color: var(--text-secondary);
  border-radius: var(--radius-md);
  transition: all 0.3s ease;
}
.mobile-nav-item i {
  width: 24px;
  text-align: center;
}
.mobile-nav-item:hover {
  background: rgba(255,255,255,0.04);
  color: var(--text-primary);
}
.mobile-nav-item.active {
  color: var(--primary);
  background: rgba(28,163,198,0.12);
}

/* ============ 主内容区 ============ */
.main-content {
  margin-left: var(--sidebar-width);
  min-height: 100vh;
  position: relative;
}
.main-content::before {
  content: '';
  position: fixed;
  top: 0;
  right: 0;
  width: 480px;
  height: 480px;
  background: radial-gradient(circle, rgba(28,163,198,0.08), transparent 70%);
  pointer-events: none;
  z-index: 0;
}

/* ============ 页面 Hero 条 ============ */
.page-hero {
  position: relative;
  background-size: cover;
  background-position: center;
  background-image: url('/assets/images/backpic/back-1.webp');
  min-height: 260px;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.page-hero .hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(10,20,40,0.92) 0%, rgba(10,20,40,0.75) 60%, rgba(10,20,40,0.35) 100%);
  z-index: 1;
}
.page-hero .hero-content {
  position: relative;
  z-index: 2;
  padding: 80px 32px;
}
.page-hero h1 {
  font-size: 42px;
  margin-bottom: 14px;
  color: var(--text-primary);
}
.page-hero p {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 540px;
}

/* ============ 分类简介区 ============ */
.intro-section {
  background: var(--bg-primary);
  padding: var(--section-padding) 0;
}
.intro-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 60px;
  align-items: center;
}
.intro-text h2 {
  margin-bottom: 20px;
}
.intro-text p {
  margin-bottom: 16px;
  line-height: 1.8;
}
.intro-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.stat-card {
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 28px 16px;
  text-align: center;
  position: relative;
  transition: all 0.3s ease;
}
.stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 16px;
  right: 16px;
  height: 1px;
  background: rgba(255,255,255,0.12);
  border-radius: 2px;
}
.stat-card:hover {
  border-color: var(--border-glass-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.stat-number {
  font-size: 32px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 6px;
}
.stat-label {
  font-size: 13px;
  color: var(--text-muted);
}

/* ============ 核心业务板块 ============ */
.business-section {
  background: var(--bg-secondary);
  padding: var(--section-padding) 0;
}
.business-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.biz-card {
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  position: relative;
  transition: all 0.3s ease;
  overflow: hidden;
}
.biz-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 20px;
  right: 20px;
  height: 1px;
  background: rgba(255,255,255,0.12);
}
.biz-card::after {
  content: '';
  position: absolute;
  top: -40px;
  right: -40px;
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(28,163,198,0.10), transparent 70%);
  pointer-events: none;
  transition: all 0.4s ease;
}
.biz-card:hover {
  border-color: var(--border-glass-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.biz-card:hover::after {
  transform: scale(1.4);
}
.biz-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: rgba(28,163,198,0.12);
  border: 1px solid rgba(28,163,198,0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 20px;
  margin-bottom: 20px;
}
.biz-card h3 {
  margin-bottom: 12px;
  font-size: 20px;
}
.biz-card p {
  font-size: 14px;
  line-height: 1.7;
  margin-bottom: 16px;
  color: var(--text-muted);
}
.text-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--primary);
  font-size: 14px;
  font-weight: 500;
  transition: all 0.3s ease;
}
.text-link i {
  font-size: 12px;
  transition: transform 0.3s ease;
}
.text-link:hover {
  color: var(--accent);
}
.text-link:hover i {
  transform: translateX(4px);
}

/* ============ 静态精选列表 ============ */
.list-section {
  background: var(--bg-primary);
  padding: var(--section-padding) 0;
}
.list-cards {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.list-card {
  display: flex;
  gap: 24px;
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 20px;
  transition: all 0.3s ease;
  position: relative;
}
.list-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 20px;
  right: 20px;
  height: 1px;
  background: rgba(255,255,255,0.12);
  border-radius: 2px;
}
.list-card:hover {
  border-color: var(--border-glass-hover);
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}
.list-thumb {
  width: 120px;
  min-height: 90px;
  flex-shrink: 0;
  border-radius: 8px;
  overflow: hidden;
  background: var(--bg-secondary);
}
.list-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.list-card:hover .list-thumb img {
  transform: scale(1.05);
}
.list-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.list-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 2px;
}
.badge {
  display: inline-block;
  padding: 3px 14px;
  background: rgba(217,164,65,0.15);
  border-radius: var(--radius-pill);
  font-size: 12px;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 0.02em;
  white-space: nowrap;
}
.date {
  font-size: 13px;
  color: var(--text-muted);
  display: inline-flex;
  align-items: center;
  gap: 5px;
}
.date i {
  font-size: 11px;
  color: var(--text-faint);
}
.list-body h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 4px;
  transition: all 0.3s ease;
  line-height: 1.4;
}
.list-card:hover .list-body h3 {
  color: var(--primary);
  transform: translateX(2px);
}
.list-body > p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 8px;
}

/* ============ 推荐内容区 ============ */
.recommend-section {
  background: var(--bg-secondary);
  padding: var(--section-padding) 0;
}
.recommend-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 0.8fr;
  gap: 24px;
}
.recommend-card {
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all 0.3s ease;
  position: relative;
}
.recommend-card:hover {
  border-color: var(--border-glass-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.recommend-card .thumb {
  height: 180px;
  overflow: hidden;
}
.recommend-card .thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 0;
  transition: transform 0.4s ease;
}
.recommend-card:hover .thumb img {
  transform: scale(1.03);
}
.recommend-card .card-body {
  padding: 24px;
}
.recommend-card .card-body .badge {
  margin-bottom: 10px;
}
.recommend-card .card-body h3 {
  font-size: 18px;
  margin-bottom: 10px;
  line-height: 1.4;
  transition: color 0.3s ease;
}
.recommend-card:hover .card-body h3 {
  color: var(--primary);
}
.recommend-card .card-body p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
}
.link-card {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  gap: 16px;
  background: linear-gradient(135deg, rgba(28,163,198,0.12), rgba(22,127,168,0.06));
  border: 1px solid rgba(28,163,198,0.25);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  position: relative;
  overflow: hidden;
  transition: all 0.3s ease;
}
.link-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 20px;
  right: 20px;
  height: 1px;
  background: rgba(28,163,198,0.3);
}
.link-card:hover {
  border-color: rgba(28,163,198,0.5);
  box-shadow: 0 0 32px rgba(28,163,198,0.15);
}
.link-card h3 {
  font-size: 22px;
  margin-bottom: 4px;
}
.link-card p {
  font-size: 14px;
  color: var(--text-muted);
}

/* ============ 按钮 ============ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 44px;
  padding: 0 24px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 500;
  transition: all 0.3s ease;
  white-space: nowrap;
  border: 1px solid transparent;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  box-shadow: var(--glow-primary);
  color: #fff;
}
.btn-primary:hover {
  box-shadow: 0 0 36px rgba(28,163,198,0.55);
  transform: translateY(-2px);
  color: #fff;
}
.btn-ghost {
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--border-glass);
  backdrop-filter: blur(8px);
  color: var(--text-primary);
}
.btn-ghost:hover {
  border-color: rgba(28,163,198,0.4);
  background: rgba(28,163,198,0.1);
  color: var(--primary);
  transform: translateY(-2px);
}
.btn-accent {
  background: var(--accent);
  color: #0A1428;
}
.btn-accent:hover {
  background: #e8b04f;
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(217,164,65,0.35);
  color: #0A1428;
}

/* ============ FAQ ============ */
.faq-section {
  background: var(--bg-primary);
  padding: var(--section-padding) 0;
}
.faq-list {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.faq-item {
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all 0.3s ease;
}
.faq-item:hover {
  border-color: var(--border-glass-hover);
}
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  user-select: none;
}
.faq-question i {
  font-size: 14px;
  color: var(--text-muted);
  transition: transform 0.3s ease;
  flex-shrink: 0;
}
.faq-item.active .faq-question i {
  transform: rotate(180deg);
  color: var(--primary);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
  padding: 0 24px;
}
.faq-item.active .faq-answer {
  max-height: 300px;
  padding-bottom: 20px;
}
.faq-answer p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-muted);
  padding-top: 4px;
  border-top: 1px solid rgba(255,255,255,0.06);
}

/* ============ CTA ============ */
.cta-section {
  background: var(--bg-secondary);
  padding: 70px 0;
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  bottom: -60px;
  right: -60px;
  width: 240px;
  height: 240px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(28,163,198,0.15), transparent 70%);
}
.cta-card {
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 55px 50px;
  text-align: center;
  position: relative;
  max-width: 900px;
  margin: 0 auto;
}
.cta-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 30px;
  right: 30px;
  height: 1px;
  background: rgba(255,255,255,0.12);
}
.cta-card h2 {
  margin-bottom: 12px;
}
.cta-card p {
  margin-bottom: 30px;
  color: var(--text-muted);
  font-size: 15px;
}
.cta-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ============ 页脚 ============ */
.site-footer {
  background: var(--bg-deep);
  border-top: 1px solid rgba(255,255,255,0.06);
  padding-top: 60px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr 1fr;
  gap: 48px;
  padding-bottom: 40px;
}
.footer-brand .brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}
.footer-brand p {
  font-size: 14px;
  color: var(--text-muted);
  max-width: 320px;
  line-height: 1.7;
}
.footer-links h4,
.footer-contact h4 {
  font-size: 16px;
  margin-bottom: 18px;
  color: var(--text-primary);
}
.footer-links ul li {
  margin-bottom: 10px;
}
.footer-links ul li a {
  font-size: 14px;
  color: var(--text-muted);
  transition: all 0.3s ease;
}
.footer-links ul li a:hover {
  color: var(--primary);
  padding-left: 4px;
}
.footer-contact p {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.footer-contact i {
  color: var(--accent);
  font-size: 13px;
  width: 16px;
}
.copyright {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding: 20px 0;
  text-align: center;
}
.copyright p {
  font-size: 13px;
  color: var(--text-faint);
}

/* ============ 响应式 ============ */
@media screen and (max-width: 1023px) {
  .side-navbar {
    display: none;
  }
  .mobile-topbar {
    display: flex;
  }
  .main-content {
    margin-left: 0;
    padding-top: 60px;
  }
  .page-hero {
    min-height: 220px;
  }
  .page-hero .hero-content {
    padding: 60px 24px;
  }
  .page-hero h1 {
    font-size: 32px;
  }
  .intro-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .business-grid {
    grid-template-columns: 1fr;
  }
  .recommend-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .container-custom {
    padding: 0 20px;
  }
  .section-padding {
    padding: 56px 0;
  }
}

@media screen and (max-width: 640px) {
  .page-hero h1 {
    font-size: 28px;
  }
  .intro-stats {
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
  }
  .stat-card {
    padding: 20px 10px;
  }
  .stat-number {
    font-size: 24px;
  }
  .stat-label {
    font-size: 12px;
  }
  .list-card {
    flex-direction: column;
    gap: 16px;
    padding: 16px;
  }
  .list-thumb {
    width: 100%;
    height: 160px;
  }
  .list-thumb img {
    height: 100%;
  }
  .biz-card {
    padding: 28px 24px;
  }
  .cta-card {
    padding: 36px 24px;
  }
  .cta-actions {
    flex-direction: column;
  }
  .btn {
    width: 100%;
  }
  .faq-question {
    font-size: 15px;
    padding: 16px 18px;
  }
  .faq-answer {
    padding: 0 18px;
  }
}