/* roulang page: index */
:root{
        --bg-base:#070C17;
        --bg-panel:#0C1524;
        --bg-elevated:#111E33;
        --text-primary:#EAF1FB;
        --text-secondary:rgba(234,241,251,0.68);
        --text-muted:rgba(234,241,251,0.42);
        --line-subtle:rgba(255,255,255,0.08);
        --line-strong:rgba(255,255,255,0.16);
        --glass-bg:rgba(255,255,255,0.055);
        --glass-border:rgba(255,255,255,0.12);
        --brand-primary:#3B82FF;
        --brand-cyan:#00E0B8;
        --brand-glow:rgba(0,224,184,0.38);
        --success:#22C58B;
        --warning:#F5A623;
        --danger:#FF5C7A;
        --rad-card:18px;
        --rad-btn:12px;
        --rad-sm:8px;
    }
    *,*::before,*::after{
        box-sizing:border-box;
        margin:0;
        padding:0;
    }
    html{
        scroll-behavior:smooth;
    }
    body{
        font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
        background:var(--bg-base);
        color:var(--text-primary);
        line-height:1.75;
        font-size:16px;
        overflow-x:hidden;
        -webkit-font-smoothing:antialiased;
    }
    a{
        color:inherit;
        text-decoration:none;
    }
    img{
        display:block;
        max-width:100%;
    }
    button,input,textarea{
        font:inherit;
        color:inherit;
    }
    button{
        background:none;
        border:none;
        cursor:pointer;
    }
    ul,ol{
        list-style:none;
    }
    .container{
        width:min(1200px,calc(100% - 40px));
        margin:0 auto;
    }
    .btn{
        display:inline-flex;
        align-items:center;
        justify-content:center;
        gap:8px;
        height:46px;
        padding:0 26px;
        border-radius:var(--rad-btn);
        font-weight:600;
        line-height:1;
        white-space:nowrap;
        transition:all .24s ease;
        outline:none;
    }
    .btn:focus-visible,
    a:focus-visible,
    button:focus-visible{
        outline:2px solid var(--brand-cyan);
        outline-offset:3px;
    }
    .btn-primary{
        background:linear-gradient(135deg,var(--brand-primary),var(--brand-cyan));
        color:#04121D;
        box-shadow:0 0 0 1px rgba(0,224,184,.2),0 8px 30px rgba(0,224,184,.28);
    }
    .btn-primary:hover{
        transform:translateY(-2px);
        box-shadow:0 0 0 1px rgba(0,224,184,.32),0 12px 34px rgba(0,224,184,.4);
        filter:saturate(1.1);
    }
    .btn-ghost{
        background:rgba(255,255,255,.06);
        border:1px solid var(--glass-border);
        color:#F2F8FF;
        backdrop-filter:blur(8px);
    }
    .btn-ghost:hover{
        background:rgba(255,255,255,.1);
        border-color:rgba(255,255,255,.24);
        transform:translateY(-1px);
    }
    .btn-lg{
        height:52px;
        padding:0 32px;
        font-size:1rem;
        border-radius:14px;
    }
    .btn-text{
        display:inline-flex;
        align-items:center;
        gap:6px;
        min-height:40px;
        padding:0 8px;
        color:var(--text-secondary);
        font-weight:600;
        transition:color .2s ease,gap .2s ease;
    }
    .btn-text:hover{
        color:var(--brand-cyan);
    }
    .btn-text:hover svg{
        transform:translateX(4px);
    }
    .btn-text svg{
        transition:transform .2s ease;
    }
    .btn-block{
        width:100%;
    }
    .section{
        padding:96px 0;
        position:relative;
    }
    .section-head{
        display:flex;
        flex-wrap:wrap;
        align-items:flex-end;
        justify-content:space-between;
        gap:20px;
        margin-bottom:48px;
    }
    .section-head h2{
        font-size:clamp(1.55rem,2.6vw,2.25rem);
        line-height:1.25;
        font-weight:700;
        letter-spacing:0;
    }
    .section-sub{
        color:var(--text-secondary);
        font-size:1rem;
        margin-top:8px;
        max-width:720px;
    }
    .eyebrow{
        display:flex;
        align-items:center;
        gap:8px;
        color:var(--brand-cyan);
        font-size:.85rem;
        font-weight:600;
        letter-spacing:.04em;
        text-transform:uppercase;
        margin-bottom:14px;
    }
    .status-dot{
        width:7px;
        height:7px;
        border-radius:50%;
        background:var(--brand-cyan);
        box-shadow:0 0 0 4px rgba(0,224,184,.12);
    }
    .section-bg-line{
        position:absolute;
        inset:0;
        pointer-events:none;
        opacity:.8;
    }
    .site-header{
        position:fixed;
        top:0;
        left:0;
        right:0;
        z-index:100;
        height:72px;
        background:rgba(7,12,23,.16);
        border-bottom:1px solid transparent;
        backdrop-filter:blur(18px) saturate(150%);
        -webkit-backdrop-filter:blur(18px) saturate(150%);
        transition:background .35s ease,border-color .35s ease,box-shadow .35s ease;
    }
    .site-header.is-scrolled{
        background:rgba(7,12,23,.88);
        border-bottom-color:var(--line-subtle);
        box-shadow:0 12px 30px rgba(0,0,0,.25);
    }
    .nav-wrap{
        display:flex;
        align-items:center;
        justify-content:space-between;
        gap:20px;
        height:100%;
    }
    .brand{
        display:inline-flex;
        align-items:center;
        gap:10px;
        flex-shrink:0;
    }
    .brand-mark{
        display:flex;
        align-items:center;
        justify-content:center;
        width:38px;
        height:38px;
        border-radius:12px;
        background:linear-gradient(145deg,rgba(59,130,255,.22),rgba(0,224,184,.14));
        border:1px solid var(--glass-border);
        color:var(--brand-cyan);
        flex-shrink:0;
    }
    .brand-name{
        font-weight:700;
        font-size:1.18rem;
        letter-spacing:.01em;
        color:var(--text-primary);
    }
    .brand-tag{
        display:inline-flex;
        align-items:center;
        justify-content:center;
        height:22px;
        padding:0 9px;
        border-radius:999px;
        background:rgba(0,224,184,.16);
        border:1px solid rgba(0,224,184,.28);
        color:var(--brand-cyan);
        font-size:.78rem;
        font-weight:600;
    }
    .main-nav{
        display:flex;
        align-items:center;
        justify-content:center;
        gap:clamp(18px,2.2vw,30px);
    }
    .nav-link{
        position:relative;
        display:inline-flex;
        align-items:center;
        height:56px;
        color:var(--text-secondary);
        font-weight:500;
        font-size:.95rem;
        transition:color .2s ease;
        white-space:nowrap;
    }
    .nav-link:hover{
        color:#fff;
    }
    .nav-link.active{
        color:#fff;
    }
    .nav-link.active::after{
        content:"";
        position:absolute;
        left:4px;
        right:4px;
        bottom:0;
        height:2px;
        border-radius:2px;
        background:var(--brand-cyan);
        box-shadow:0 0 12px var(--brand-glow);
    }
    .nav-actions{
        display:flex;
        align-items:center;
        gap:14px;
        flex-shrink:0;
    }
    .menu-toggle{
        display:none;
        width:42px;
        height:42px;
        border-radius:10px;
        align-items:center;
        justify-content:center;
        color:#fff;
        background:rgba(255,255,255,.06);
        border:1px solid var(--glass-border);
    }
    .menu-toggle svg{
        width:22px;
        height:22px;
    }
    .hero{
        position:relative;
        display:flex;
        align-items:center;
        justify-content:center;
        min-height:100vh;
        padding:132px 0 92px;
        overflow:hidden;
        background-color:var(--bg-base);
    }
    .hero-bg{
        position:absolute;
        inset:0;
        background-image:url("/assets/images/backpic/back-1.webp");
        background-position:center;
        background-size:cover;
        z-index:0;
        transform:scale(1.01);
    }
    .hero-bg::after{
        content:"";
        position:absolute;
        inset:0;
        background:
            radial-gradient(ellipse 64% 44% at 70% 16%,rgba(0,224,184,.13),transparent 60%),
            linear-gradient(90deg,rgba(7,12,23,.46) 0,rgba(7,12,23,.74) 50%,rgba(7,12,23,.94) 100%),
            linear-gradient(180deg,rgba(7,12,23,.46) 0,rgba(7,12,23,.88) 100%);
        z-index:1;
    }
    .hero-bg-light{
        position:absolute;
        inset:0;
        z-index:1;
        background-image:
            linear-gradient(rgba(255,255,255,.025) 1px,transparent 1px),
            linear-gradient(90deg,rgba(255,255,255,.025) 1px,transparent 1px);
        background-size:88px 88px;
        mask-image:linear-gradient(160deg,transparent 20%,#000 100%);
    }
    .hero-inner{
        position:relative;
        z-index:2;
        padding-bottom:28px;
    }
    .hero-content{
        max-width:820px;
    }
    .hero h1{
        font-size:clamp(2rem,4.4vw,3.6rem);
        line-height:1.2;
        font-weight:700;
        letter-spacing:0;
        margin:18px 0 24px;
        color:#fff;
        text-wrap:balance;
    }
    .hero h1 em{
        font-style:normal;
        color:var(--brand-cyan);
    }
    .hero-sub{
        font-size:clamp(1rem,1.4vw,1.15rem);
        line-height:1.85;
        color:var(--text-secondary);
        max-width:680px;
        margin-bottom:34px;
    }
    .hero-actions{
        display:flex;
        align-items:center;
        gap:14px;
        flex-wrap:wrap;
    }
    .hero-stats{
        position:relative;
        z-index:2;
        display:grid;
        grid-template-columns:repeat(4,1fr);
        gap:1px;
        margin-top:80px;
        background:rgba(255,255,255,.05);
        border:1px solid var(--glass-border);
        border-radius:18px;
        backdrop-filter:blur(18px) saturate(150%);
        -webkit-backdrop-filter:blur(18px) saturate(150%);
        overflow:hidden;
    }
    .stat-item{
        display:flex;
        flex-direction:column;
        gap:7px;
        padding:24px 26px;
        background:rgba(10,17,29,.64);
        min-width:0;
    }
    .stat-label{
        color:var(--text-muted);
        font-size:.86rem;
    }
    .stat-value{
        color:#fff;
        font-size:1.4rem;
        line-height:1.3;
        font-weight:700;
        word-break:break-all;
    }
    .feature-section{
        background:var(--bg-base);
    }
    .feature-grid{
        display:grid;
        grid-template-columns:1.05fr 1fr 1fr;
        grid-template-rows:1fr 1fr;
        gap:24px;
        align-items:stretch;
    }
    .feature-card{
        position:relative;
        background:linear-gradient(145deg,rgba(255,255,255,.055),rgba(255,255,255,.025));
        border:1px solid var(--glass-border);
        border-radius:var(--rad-card);
        padding:34px 30px;
        min-height:220px;
        backdrop-filter:blur(12px);
        -webkit-backdrop-filter:blur(12px);
        overflow:hidden;
        transition:transform .24s ease,border-color .24s ease,background .24s ease,box-shadow .24s ease;
    }
    .feature-card:hover{
        transform:translateY(-4px);
        border-color:rgba(255,255,255,.18);
        background:rgba(255,255,255,.08);
        box-shadow:0 22px 48px rgba(0,0,0,.3);
    }
    .feature-card.feature-main{
        background:linear-gradient(145deg,rgba(59,130,255,.18),rgba(0,224,184,.05)),rgba(255,255,255,.04);
        border-color:rgba(59,130,255,.24);
        grid-row:span 2;
    }
    .feature-card.feature-main .feature-icon{
        width:54px;
        height:54px;
        border-radius:16px;
        background:rgba(0,224,184,.16);
        border:1px solid rgba(0,224,184,.2);
    }
    .feature-icon{
        display:flex;
        align-items:center;
        justify-content:center;
        width:46px;
        height:46px;
        border-radius:14px;
        background:rgba(0,224,184,.12);
        border:1px solid rgba(0,224,184,.16);
        color:var(--brand-cyan);
        margin-bottom:24px;
        position:relative;
    }
    .feature-icon::before{
        content:"";
        position:absolute;
        width:8px;
        height:8px;
        border-radius:50%;
        background:var(--brand-cyan);
        right:-3px;
        top:-3px;
        box-shadow:0 0 14px var(--brand-glow);
    }
    .feature-card h3{
        font-size:1.08rem;
        margin-bottom:10px;
        letter-spacing:.01em;
        color:#fff;
    }
    .feature-card p{
        color:var(--text-secondary);
        font-size:.92rem;
        line-height:1.7;
        margin-bottom:18px;
    }
    .feature-main h3{
        font-size:1.4rem;
        line-height:1.4;
    }
    .feature-main p{
        font-size:1rem;
        max-width:420px;
    }
    .feature-more{
        display:inline-flex;
        align-items:center;
        gap:6px;
        font-weight:600;
        font-size:.9rem;
        color:var(--brand-cyan);
        transition:gap .2s ease;
    }
    .feature-more svg{
        transition:transform .2s ease;
    }
    .feature-more:hover svg{
        transform:translateX(3px);
    }
    .scene-section{
        background:var(--bg-panel);
        overflow:hidden;
    }
    .scene-grid{
        display:grid;
        grid-template-columns:minmax(0,1.02fr) minmax(0,.98fr);
        gap:64px;
        align-items:center;
    }
    .scene-copy h2{
        font-size:clamp(1.55rem,2.6vw,2.25rem);
        line-height:1.25;
        margin:16px 0;
    }
    .scene-copy > p{
        color:var(--text-secondary);
        margin-bottom:34px;
    }
    .scene-step{
        position:relative;
        padding:22px 0 22px 84px;
        border-bottom:1px solid var(--line-subtle);
    }
    .scene-step:last-child{
        border-bottom:none;
    }
    .step-num{
        position:absolute;
        left:0;
        top:22px;
        display:flex;
        align-items:center;
        justify-content:center;
        width:50px;
        height:50px;
        border-radius:50%;
        color:#04121D;
        font-weight:700;
        font-size:.98rem;
        background:linear-gradient(135deg,var(--brand-primary),var(--brand-cyan));
        box-shadow:0 0 24px rgba(0,224,184,.28);
    }
    .scene-step h3{
        color:#fff;
        margin-bottom:6px;
        font-size:1.08rem;
        color:var(--text-primary);
    }
    .scene-step p{
        color:var(--text-secondary);
        font-size:.93rem;
        line-height:1.7;
    }
    .scene-media{
        position:relative;
    }
    .scene-media-inner{
        border-radius:22px;
        border:1px solid var(--glass-border);
        background:rgba(255,255,255,.03);
        padding:12px;
        backdrop-filter:blur(8px);
    }
    .scene-media img{
        width:100%;
        height:auto;
        object-fit:cover;
        border-radius:16px;
        aspect-ratio:5/4;
    }
    .scene-note{
        position:absolute;
        left:26px;
        right:26px;
        bottom:32px;
        padding:16px 20px;
        background:rgba(7,12,23,.72);
        border:1px solid rgba(255,255,255,.1);
        border-radius:14px;
        backdrop-filter:blur(10px);
        font-size:.9rem;
        color:var(--text-secondary);
    }
    .category-section{
        background:var(--bg-base);
    }
    .category-grid{
        display:grid;
        grid-template-columns:repeat(2,1fr);
        gap:22px;
    }
    .cat-card{
        position:relative;
        display:flex;
        flex-direction:column;
        justify-content:flex-end;
        min-height:268px;
        border-radius:20px;
        border:1px solid var(--line-subtle);
        background-position:center;
        background-size:cover;
        background-color:var(--bg-elevated);
        overflow:hidden;
        isolation:isolate;
        transition:transform .24s ease,border-color .24s ease;
    }
    .cat-card::before{
        content:"";
        position:absolute;
        inset:0;
        background:linear-gradient(200deg,rgba(7,12,23,.4) 0,rgba(7,12,23,.76) 48%,rgba(7,12,23,.95) 100%);
        z-index:-1;
    }
    .cat-card::after{
        content:"";
        position:absolute;
        inset:0;
        border:1px solid rgba(255,255,255,.02);
        background:transparent;
        z-index:-1;
    }
    .cat-card:hover{
        transform:translateY(-4px);
        border-color:rgba(255,255,255,.16);
        box-shadow:0 24px 54px rgba(0,0,0,.34);
    }
    .cat-card-body{
        padding:26px;
    }
    .cat-tag{
        display:inline-flex;
        align-items:center;
        height:22px;
        padding:0 10px;
        border-radius:999px;
        background:rgba(0,224,184,.14);
        color:var(--brand-cyan);
        font-size:.8rem;
        font-weight:600;
        margin-bottom:16px;
    }
    .cat-card h3{
        color:#fff;
        font-size:1.22rem;
        margin-bottom:10px;
    }
    .cat-card p{
        color:rgba(234,241,251,.68);
        font-size:.9rem;
        line-height:1.7;
        margin-bottom:12px;
    }
    .cat-card-more{
        display:inline-flex;
        align-items:center;
        gap:4px;
        color:var(--text-secondary);
        font-size:.9rem;
        font-weight:600;
    }
    .cat-card:hover .cat-card-more{
        color:var(--brand-cyan);
    }
    .plan-section{
        background:var(--bg-panel);
    }
    .plan-grid{
        display:grid;
        grid-template-columns:repeat(3,1fr);
        gap:24px;
        align-items:stretch;
    }
    .plan-card{
        position:relative;
        background:linear-gradient(145deg,rgba(255,255,255,.055),rgba(255,255,255,.02));
        border:1px solid var(--glass-border);
        border-radius:22px;
        padding:32px 28px;
        display:flex;
        flex-direction:column;
        transition:transform .24s ease,border-color .24s ease;
    }
    .plan-card:hover{
        transform:translateY(-4px);
        border-color:rgba(255,255,255,.17);
    }
    .plan-card.recommended{
        background:linear-gradient(155deg,rgba(0,224,184,.08),rgba(59,130,255,.12));
        border-color:rgba(0,224,184,.36);
        box-shadow:0 0 0 1px rgba(0,224,184,.12),0 24px 52px rgba(0,0,0,.32);
    }
    .plan-badge{
        align-self:flex-start;
        display:inline-flex;
        align-items:center;
        height:24px;
        padding:0 12px;
        margin-bottom:18px;
        border-radius:999px;
        color:#04121D;
        font-size:.78rem;
        font-weight:700;
        background:linear-gradient(90deg,var(--brand-primary),var(--brand-cyan));
    }
    .plan-name{
        color:#fff;
        font-size:1.2rem;
        font-weight:700;
        margin-bottom:6px;
    }
    .plan-desc{
        color:var(--text-secondary);
        font-size:.9rem;
        margin-bottom:22px;
        min-height:52px;
    }
    .plan-feature-list{
        margin-bottom:30px;
        flex:1;
    }
    .plan-feature-list li{
        display:flex;
        align-items:flex-start;
        gap:9px;
        color:var(--text-secondary);
        font-size:.9rem;
        line-height:1.65;
        padding:7px 0;
    }
    .plan-feature-list li svg{
        color:var(--success);
        margin-top:4px;
        flex-shrink:0;
    }
    .news-section{
        background:var(--bg-base);
    }
    .news-grid{
        display:grid;
        grid-template-columns:repeat(4,1fr);
        gap:22px;
    }
    .news-card{
        display:flex;
        flex-direction:column;
        background:var(--glass-bg);
        border:1px solid var(--glass-border);
        border-radius:16px;
        padding:24px 22px;
        transition:transform .22s ease,border-color .22s ease,background .22s ease;
    }
    .news-card:hover{
        transform:translateY(-4px);
        background:rgba(255,255,255,.08);
        border-color:rgba(255,255,255,.17);
    }
    .news-cat{
        align-self:flex-start;
        height:22px;
        display:inline-flex;
        align-items:center;
        padding:0 10px;
        border-radius:999px;
        background:rgba(0,224,184,.12);
        border:1px solid rgba(0,224,184,.12);
        color:var(--brand-cyan);
        font-size:.8rem;
        margin-bottom:16px;
    }
    .news-card h3{
        font-size:1rem;
        line-height:1.6;
        margin-bottom:10px;
        color:#fff;
        font-weight:600;
    }
    .news-card p{
        color:var(--text-muted);
        font-size:.86rem;
        line-height:1.6;
        display:-webkit-box;
        -webkit-line-clamp:2;
        -webkit-box-orient:vertical;
        overflow:hidden;
        margin-bottom:16px;
    }
    .news-meta{
        display:flex;
        align-items:center;
        justify-content:space-between;
        gap:10px;
        margin-top:auto;
        font-size:.78rem;
        color:var(--text-muted);
    }
    .news-meta time{
        display:inline-flex;
        align-items:center;
        gap:5px;
    }
    .news-empty{
        display:flex;
        align-items:center;
        justify-content:center;
        min-height:180px;
        border:1px dashed rgba(255,255,255,.16);
        border-radius:18px;
        color:var(--text-muted);
        font-size:.95rem;
        text-align:center;
        background:rgba(255,255,255,.02);
    }
    .faq-zone{
        background:var(--bg-panel);
    }
    .faq-grid{
        display:grid;
        grid-template-columns:1fr 1fr;
        gap:18px;
        align-items:start;
    }
    .faq-item{
        background:var(--glass-bg);
        border:1px solid var(--glass-border);
        border-radius:16px;
        overflow:hidden;
        transition:border-color .22s ease;
    }
    .faq-item.open{
        border-color:rgba(0,224,184,.24);
    }
    .faq-question{
        width:100%;
        display:flex;
        align-items:center;
        justify-content:space-between;
        gap:16px;
        text-align:left;
        padding:20px 22px;
        color:#fff;
        font-weight:600;
        font-size:.98rem;
        line-height:1.5;
    }
    .faq-icon{
        position:relative;
        width:24px;
        height:24px;
        border-radius:50%;
        background:rgba(255,255,255,.08);
        border:1px solid var(--glass-border);
        flex-shrink:0;
        transition:transform .28s ease,background .2s ease;
    }
    .faq-icon::before,
    .faq-icon::after{
        content:"";
        position:absolute;
        top:50%;
        left:50%;
        width:11px;
        height:1.5px;
        background:var(--text-secondary);
        transform:translate(-50%,-50%);
        transition:background .2s ease,transform .28s ease;
    }
    .faq-icon::after{
        transform:translate(-50%,-50%) rotate(90deg);
    }
    .faq-item.open .faq-icon{
        transform:rotate(45deg);
        background:rgba(0,224,184,.16);
        border-color:rgba(0,224,184,.2);
    }
    .faq-answer{
        height:0;
        overflow:hidden;
        transition:height .3s ease;
    }
    .faq-answer-inner{
        padding:0 22px 22px;
        color:var(--text-secondary);
        font-size:.9rem;
        line-height:1.8;
    }
    .cta-section{
        position:relative;
        padding:70px 0;
        overflow:hidden;
        background-color:var(--bg-base);
    }
    .cta-wrap{
        position:relative;
        border-radius:26px;
        border:1px solid var(--glass-border);
        background:
            linear-gradient(135deg,rgba(59,130,255,.24),rgba(0,224,184,.1)),
            var(--bg-elevated);
        overflow:hidden;
        padding:70px 56px 66px;
        text-align:center;
    }
    .cta-wrap::before{
        content:"";
        position:absolute;
        inset:0;
        background-image:url("/assets/images/backpic/back-2.webp");
        background-position:center;
        background-size:cover;
        opacity:.16;
        mix-blend-mode:screen;
    }
    .cta-inner{
        position:relative;
        z-index:1;
    }
    .cta-wrap h2{
        font-size:clamp(1.7rem,3vw,2.6rem);
        color:#fff;
        margin-bottom:16px;
        line-height:1.25;
    }
    .cta-wrap p{
        color:var(--text-secondary);
        font-size:1.05rem;
        max-width:620px;
        margin:0 auto 30px;
    }
    .cta-tips{
        display:flex;
        justify-content:center;
        gap:28px;
        flex-wrap:wrap;
        margin-top:26px;
        font-size:.88rem;
        color:var(--text-secondary);
    }
    .cta-tips span{
        display:inline-flex;
        align-items:center;
        gap:6px;
    }
    .cta-tips svg{
        color:var(--brand-cyan);
    }
    .footer{
        background:#070b14;
        border-top:1px solid var(--line-subtle);
        padding:70px 0 0;
    }
    .footer-grid{
        display:grid;
        grid-template-columns:1.7fr 1fr 1fr 1.3fr;
        gap:52px;
        padding-bottom:50px;
    }
    .footer-about{
        max-width:360px;
    }
    .footer-brand{
        display:inline-flex;
        align-items:center;
        gap:10px;
        margin-bottom:16px;
    }
    .footer-brand .brand-name{
        font-size:1.08rem;
    }
    .footer-about p{
        color:var(--text-muted);
        font-size:.88rem;
        line-height:1.8;
        margin-top:10px;
    }
    .footer-title{
        color:#fff;
        font-size:.95rem;
        margin-bottom:18px;
        font-weight:600;
    }
    .footer-link{
        display:block;
        color:var(--text-muted);
        font-size:.88rem;
        line-height:2.4;
        transition:color .2s ease;
    }
    .footer-link:hover{
        color:var(--brand-cyan);
    }
    .footer-news .footer-news-item{
        display:block;
        color:var(--text-muted);
        font-size:.86rem;
        line-height:1.6;
        padding:6px 0;
        transition:color .2s ease;
    }
    .footer-news .footer-news-item:hover{
        color:#fff;
    }
    .footer-news .footer-news-item time{
        color:var(--text-muted);
        display:block;
        font-size:.78rem;
        opacity:.8;
    }
    .footer-bottom{
        border-top:1px solid var(--line-subtle);
        padding:22px 0;
        text-align:center;
        color:var(--text-muted);
        font-size:.82rem;
    }
    @keyframes heroIn{
        from{opacity:0;transform:translateY(24px)}
        to{opacity:1;transform:translateY(0)}
    }
    .hero-content{
        animation:heroIn .8s ease both;
    }
    .hero-stats{
        animation:heroIn .9s ease .15s both;
    }
    @media (min-width:1024px){
        .feature-card.feature-mini:nth-child(3){
            grid-column:span 2;
        }
        .cat-card:first-child{
            grid-column:1;
        }
    }
    @media (max-width:1023px){
        .section{
            padding:72px 0;
        }
        .menu-toggle{
            display:inline-flex;
        }
        .main-nav{
            position:fixed;
            top:72px;
            right:0;
            width:min(92vw,420px);
            height:calc(100vh - 72px);
            background:rgba(7,12,23,.98);
            backdrop-filter:blur(20px);
            border-left:1px solid var(--glass-border);
            flex-direction:column;
            justify-content:flex-start;
            align-items:stretch;
            gap:4px;
            padding:24px 28px;
            transform:translateX(105%);
            transition:transform .3s ease;
            overflow-y:auto;
            z-index:99;
        }
        .main-nav.open{
            transform:translateX(0);
        }
        .nav-link{
            height:48px;
            width:100%;
            border-bottom:1px solid rgba(255,255,255,.04);
        }
        .nav-link.active::after{
            left:0;
            right:auto;
            top:50%;
            bottom:auto;
            width:3px;
            height:18px;
            transform:translateY(-50%);
        }
        .nav-cta{
            display:none;
        }
        .hero-stats{
            grid-template-columns:repeat(2,1fr);
            margin-top:56px;
        }
        .feature-grid{
            grid-template-columns:repeat(2,1fr);
        }
        .feature-card.feature-main{
            grid-column:span 2;
            grid-row:auto;
        }
        .scene-grid{
            grid-template-columns:1fr;
            gap:36px;
        }
        .category-grid{
            grid-template-columns:repeat(2,1fr);
        }
        .plan-grid{
            grid-template-columns:1fr;
            gap:18px;
        }
        .news-grid{
            grid-template-columns:repeat(3,1fr);
        }
        .faq-grid{
            grid-template-columns:1fr;
        }
        .footer-grid{
            grid-template-columns:repeat(2,1fr);
            gap:40px;
        }
    }
    @media (max-width:767px){
        body{
            font-size:15px;
        }
        .section{
            padding:56px 0;
        }
        .section-head{
            margin-bottom:28px;
        }
        .container{
            width:min(100% - 30px,1200px);
        }
        .hero{
            padding:116px 0 56px;
            min-height:88vh;
        }
        .hero h1{
            font-size:2.08rem;
            line-height:1.26;
        }
        .hero-sub{
            font-size:1rem;
            line-height:1.7;
        }
        .hero-actions .btn{
            width:100%;
        }
        .hero-stats{
            margin-top:46px;
            grid-template-columns:1fr 1fr;
        }
        .stat-item{
            padding:18px;
        }
        .stat-value{
            font-size:1.1rem;
        }
        .feature-grid{
            grid-template-columns:1fr;
        }
        .feature-card{
            padding:26px 22px;
            min-height:auto;
        }
        .feature-card.feature-main{
            grid-column:auto;
        }
        .scene-grid{
            gap:28px;
        }
        .scene-step{
            padding:18px 0 18px 62px;
        }
        .step-num{
            width:42px;
            height:42px;
            top:18px;
            font-size:.9rem;
        }
        .category-grid{
            grid-template-columns:1fr;
            gap:14px;
        }
        .cat-card{
            min-height:230px;
        }
        .news-grid{
            grid-template-columns:1fr;
            gap:14px;
        }
        .news-card p{
            -webkit-line-clamp:3;
        }
        .cta-wrap{
            padding:44px 22px;
            border-radius:20px;
        }
        .cta-tips{
            gap:10px 18px;
        }
        .footer-grid{
            grid-template-columns:1fr;
            gap:34px;
        }
        .footer-bottom{
            padding:20px 16px;
        }
        .faq-grid{
            gap:14px;
        }
        .faq-question{
            padding:16px;
            font-size:.95rem;
        }
        .faq-answer-inner{
            padding:0 16px 16px;
        }
        .plan-card.recommended{
            order:-1;
        }
    }
    @media (max-width:520px){
        .brand-name{
            font-size:1.05rem;
        }
        .brand-tag{
            display:none;
        }
        .hero-stats{
            grid-template-columns:1fr 1fr;
        }
        .stat-value{
            font-size:1rem;
        }
        .stat-label{
            font-size:.78rem;
        }
    }
    @media (prefers-reduced-motion:reduce){
        *,
        *::before,
        *::after{
            animation-duration:.01ms !important;
            animation-iteration-count:1 !important;
            transition-duration:.01ms !important;
            scroll-behavior:auto !important;
        }
    }

/* roulang page: article */
:root {
    --bg-base: #070C17;
    --bg-panel: #0C1524;
    --bg-elevated: #111E33;
    --text-primary: #EAF1FB;
    --text-secondary: rgba(234, 241, 251, 0.72);
    --text-muted: rgba(234, 241, 251, 0.46);
    --line-subtle: rgba(255, 255, 255, 0.08);
    --line-strong: rgba(255, 255, 255, 0.16);
    --glass-bg: rgba(255, 255, 255, 0.055);
    --glass-border: rgba(255, 255, 255, 0.12);
    --brand-primary: #3B82FF;
    --brand-cyan: #00E0B8;
    --brand-glow: rgba(0, 224, 184, 0.32);
    --success: #22C58B;
    --warning: #F5A623;
    --danger: #FF5C7A;
    --radius-lg: 20px;
    --radius-md: 14px;
    --radius-sm: 10px;
    --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.22);
    --shadow-hover: 0 20px 50px rgba(0, 0, 0, 0.3);
    --font-sans: -apple-system, "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", sans-serif;
}

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

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

body {
    font-family: var(--font-sans);
    background: var(--bg-base);
    color: var(--text-primary);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    overflow-x: hidden;
}

body.nav-locked {
    overflow: hidden;
}

main {
    flex: 1;
}

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

a {
    color: inherit;
    text-decoration: none;
    transition: color .2s ease, border-color .2s ease, background .2s ease, box-shadow .2s ease;
}

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

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding-left: 20px;
    padding-right: 20px;
}

@media (min-width: 768px) {
    .container {
        padding-left: 28px;
        padding-right: 28px;
    }
}

:focus-visible {
    outline: 2px solid var(--brand-cyan);
    outline-offset: 3px;
}

/* 顶部导航 */
.site-header {
    position: absolute;
    top: 0;
    left: 0;
    z-index: 80;
    width: 100%;
    background: rgba(7, 12, 23, 0.18);
    -webkit-backdrop-filter: blur(18px) saturate(150%);
    backdrop-filter: blur(18px) saturate(150%);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    transition: background .3s ease, border-color .3s ease, box-shadow .3s ease;
}

.site-header.scrolled {
    position: fixed;
    background: rgba(7, 12, 23, 0.92);
    border-bottom-color: rgba(255, 255, 255, 0.11);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.24);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 72px;
    gap: 18px;
}

.brand-logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
    line-height: 1.1;
}

.brand-mark {
    width: 40px;
    height: 40px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    background: linear-gradient(145deg, rgba(59, 130, 255, 0.2), rgba(0, 224, 184, 0.13));
    border: 1px solid rgba(0, 224, 184, 0.23);
    color: var(--brand-cyan);
}

.brand-name {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.01em;
}

.brand-tag {
    font-size: .78rem;
    font-weight: 600;
    color: var(--bg-base);
    background: linear-gradient(135deg, var(--brand-primary), var(--brand-cyan));
    padding: 3px 8px;
    border-radius: 999px;
    margin-left: 4px;
    letter-spacing: .02em;
}

.main-nav {
    display: none;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-left: auto;
}

.header-cta {
    height: 42px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 0 20px;
    border-radius: 999px;
    font-size: .95rem;
    font-weight: 600;
    background: linear-gradient(135deg, #3B82FF, #00E0B8);
    color: #071021;
    border: 1px solid rgba(0, 224, 184, 0.35);
    box-shadow: 0 0 0 1px rgba(0, 224, 184, 0.18), 0 8px 30px rgba(0, 224, 184, 0.16);
}

.header-cta:hover {
    box-shadow: 0 0 0 1px rgba(0, 224, 184, 0.3), 0 7px 34px rgba(0, 224, 184, 0.3);
    transform: translateY(-1px);
}

.nav-burger {
    width: 42px;
    height: 42px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(255, 255, 255, 0.14);
    background: rgba(255, 255, 255, 0.06);
    border-radius: 10px;
    color: var(--text-primary);
}

@media (max-width: 1023px) {
    .main-nav {
        position: fixed;
        top: 0;
        right: 0;
        bottom: 0;
        width: min(16rem, 86vw);
        background: linear-gradient(180deg, #0C1A2D 0%, #08101F 100%);
        border-left: 1px solid rgba(255, 255, 255, 0.1);
        display: flex;
        flex-direction: column;
        padding: 96px 24px 28px;
        gap: 4px;
        transform: translateX(105%);
        visibility: hidden;
        transition: transform .28s ease, visibility .28s ease;
        box-shadow: -20px 0 60px rgba(0, 0, 0, 0.35);
    }

    .main-nav::before {
        content: "九游体育注册入口";
        position: absolute;
        top: 26px;
        left: 24px;
        font-size: 1rem;
        font-weight: 600;
        color: var(--text-primary);
    }

    body.nav-open .main-nav {
        transform: translateX(0);
        visibility: visible;
    }

    .main-nav .nav-link {
        padding: 12px 14px;
        border-radius: 12px;
        color: var(--text-secondary);
    }

    .main-nav .nav-link:hover,
    .main-nav .nav-link.active {
        background: rgba(255, 255, 255, 0.08);
        color: #fff;
    }

    .nav-close-layer {
        position: fixed;
        inset: 0;
        width: 100%;
        height: 100%;
        background: rgba(3, 8, 16, 0.72);
        pointer-events: none;
        opacity: 0;
        -webkit-backdrop-filter: blur(4px);
        backdrop-filter: blur(4px);
        transition: opacity .25s ease;
        z-index: 70;
    }

    body.nav-open .nav-close-layer {
        opacity: 1;
        pointer-events: auto;
    }

    .header-cta.nav-mobile-cta {
        display: flex;
        margin-top: 18px;
        width: 100%;
        height: 46px;
    }
}

@media (min-width: 1024px) {
    .main-nav {
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 4px;
        flex: 1;
        padding: 0 18px;
    }

    .main-nav .nav-link {
        display: inline-flex;
        align-items: center;
        height: 42px;
        padding: 0 16px;
        border-radius: 9px;
        color: var(--text-secondary);
        font-size: .95rem;
        font-weight: 500;
        white-space: nowrap;
        transition: all .2s ease;
    }

    .main-nav .nav-link:hover {
        color: #fff;
        background: rgba(255, 255, 255, 0.07);
    }

    .main-nav .nav-link.active {
        color: var(--brand-cyan);
        background: rgba(0, 224, 184, 0.1);
        box-shadow: inset 0 -2px 0 var(--brand-cyan);
    }

    .nav-burger,
    .header-cta.nav-mobile-cta {
        display: none;
    }
}

/* 内容顶部 */
.article-hero {
    position: relative;
    background-color: #08101D;
    background-image:
        linear-gradient(to bottom, rgba(7, 12, 23, 0.5), rgba(7, 12, 23, 0.92)),
        url('/assets/images/backpic/back-1.webp');
    background-size: cover;
    background-position: center;
    padding: 126px 0 38px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.article-hero .breadcrumb {
    font-size: .88rem;
    color: var(--text-muted);
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 6px;
    margin-bottom: 22px;
}

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

.breadcrumb .sep {
    color: rgba(255, 255, 255, 0.25);
}

.hero-label {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    background: rgba(0, 224, 184, 0.12);
    border: 1px solid rgba(0, 224, 184, 0.25);
    color: var(--brand-cyan);
    padding: 6px 13px;
    border-radius: 999px;
    font-size: .82rem;
    font-weight: 600;
    margin-bottom: 18px;
}

.article-hero h1 {
    max-width: 860px;
    font-size: clamp(1.55rem, 3.2vw, 2.5rem);
    line-height: 1.3;
    letter-spacing: -0.01em;
    margin-bottom: 16px;
}

.article-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 10px 20px;
    color: var(--text-muted);
    font-size: .9rem;
    margin-top: 12px;
}

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

.article-meta i {
    color: var(--brand-cyan);
    font-style: normal;
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: currentColor;
    opacity: .7;
}

/* 文章主体 */
.article-stage {
    padding: 54px 0 38px;
}

.article-layout {
    display: grid;
    grid-template-columns: 1fr;
    align-items: start;
    gap: 34px;
}

.article-panel {
    background: rgba(12, 21, 36, 0.76);
    border: 1px solid var(--line-subtle);
    border-radius: var(--radius-lg);
    padding: clamp(24px, 4vw, 48px);
    box-shadow: var(--shadow-card);
}

.article-body {
    color: rgba(234, 241, 251, 0.92);
    font-size: 1.02rem;
    line-height: 1.88;
    word-wrap: break-word;
}

.article-body p {
    margin: 0 0 1.55rem;
    max-width: 72ch;
}

.article-body h2 {
    font-size: clamp(1.3rem, 2.2vw, 1.75rem);
    color: #fff;
    margin: 2.5rem 0 1.1rem;
    line-height: 1.35;
}

.article-body h3 {
    font-size: 1.2rem;
    color: #fff;
    margin: 1.8rem 0 .8rem;
    line-height: 1.4;
}

.article-body h4 {
    font-size: 1.05rem;
    color: var(--text-primary);
    margin: 1.4rem 0 .7rem;
}

.article-body a {
    color: var(--brand-cyan);
    border-bottom: 1px solid rgba(0, 224, 184, 0.3);
}

.article-body a:hover {
    border-bottom-color: var(--brand-cyan);
}

.article-body ul,
.article-body ol {
    padding-left: 1.4rem;
    margin-bottom: 1.5rem;
}

.article-body li {
    margin-bottom: .6rem;
}

.article-body ul li::marker {
    color: var(--brand-cyan);
}

.article-body ol li::marker {
    color: var(--brand-cyan);
}

.article-body blockquote {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-left: 3px solid var(--brand-cyan);
    color: rgba(234, 241, 251, 0.75);
    border-radius: 0 12px 12px 0;
    padding: 18px 20px;
    margin: 1.6rem 0;
    font-size: .98rem;
}

.article-body code {
    background: rgba(0, 224, 184, 0.09);
    color: #BFF3E2;
    border-radius: 6px;
    padding: 2px 7px;
    font-size: .92em;
}

.article-body pre {
    background: #0A1220;
    border: 1px solid rgba(255, 255, 255, 0.09);
    border-radius: 14px;
    padding: 18px 20px;
    overflow-x: auto;
    margin-bottom: 1.5rem;
}

.article-body pre code {
    background: transparent;
    padding: 0;
    color: #C9E3F5;
}

.article-body img {
    border-radius: 14px;
    margin: 1.8rem 0;
}

.article-body figure {
    margin: 1.8rem 0;
}

.article-body figcaption {
    font-size: .85rem;
    color: var(--text-muted);
    text-align: center;
    margin-top: .5rem;
}

.article-body table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.6rem 0;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 12px;
    overflow: hidden;
}

.article-body th,
.article-body td {
    border: 1px solid rgba(255, 255, 255, 0.07);
    padding: 10px 12px;
    font-size: .94rem;
}

.article-body th {
    background: rgba(255, 255, 255, 0.06);
    color: #fff;
    text-align: left;
    font-weight: 600;
}

.article-actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 14px;
    margin-top: 38px;
    padding-top: 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.article-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.article-tags span {
    background: rgba(0, 224, 184, 0.1);
    border: 1px solid rgba(0, 224, 184, 0.16);
    color: var(--brand-cyan);
    font-size: .84rem;
    padding: 4px 12px;
    border-radius: 999px;
}

.article-back {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    color: var(--text-secondary);
    font-size: .92rem;
}

.article-back:hover {
    color: var(--brand-cyan);
}

/* 内容未找到 */
.not-found-hero {
    background: rgba(12, 21, 36, 0.7);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-lg);
    padding: 60px 24px;
    text-align: center;
    max-width: 720px;
    margin: 20px auto 0;
}

.not-found-hero .nf-icon {
    width: 66px;
    height: 66px;
    border-radius: 22px;
    background: rgba(255, 92, 124, 0.1);
    color: var(--warning);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    margin-bottom: 20px;
    border: 1px solid rgba(245, 166, 35, 0.25);
}

.not-found-hero h2 {
    font-size: 1.6rem;
    color: #fff;
    margin-bottom: 12px;
}

.not-found-hero p {
    color: var(--text-secondary);
    font-size: .95rem;
    margin-bottom: 24px;
}

.btn-home {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 46px;
    padding: 0 26px;
    background: linear-gradient(135deg, #3B82FF, #00E0B8);
    color: #071021;
    font-weight: 600;
    border-radius: 12px;
    box-shadow: 0 0 0 1px rgba(0, 224, 184, 0.24), 0 8px 26px rgba(0, 224, 184, 0.18);
}

/* 延伸内容 */
.related-section {
    padding: 44px 0 70px;
}

.related-head {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 20px;
    margin-bottom: 24px;
}

.related-head h2 {
    font-size: clamp(1.45rem, 2.4vw, 2rem);
    font-weight: 700;
    letter-spacing: -0.01em;
}

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

.related-card {
    display: flex;
    flex-direction: column;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 18px;
    overflow: hidden;
    transition: transform .2s ease, border-color .2s ease, background .2s ease;
}

.related-card:hover {
    transform: translateY(-4px);
    border-color: rgba(255, 255, 255, 0.18);
    background: rgba(255, 255, 255, 0.075);
}

.related-card .card-media {
    aspect-ratio: 16 / 9;
    background: #0C1726;
    position: relative;
    overflow: hidden;
}

.related-card .card-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: .88;
    transition: transform .25s ease;
}

.related-card:hover .card-media img {
    transform: scale(1.04);
}

.card-body {
    padding: 20px 22px 22px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    flex: 1;
}

.card-body .card-label {
    font-size: .8rem;
    color: var(--brand-cyan);
    background: rgba(0, 224, 184, 0.1);
    width: fit-content;
    padding: 3px 10px;
    border-radius: 999px;
}

.card-body h3 {
    font-size: 1.05rem;
    line-height: 1.5;
    color: var(--text-primary);
}

.card-body p {
    color: var(--text-secondary);
    font-size: .89rem;
    line-height: 1.65;
    flex: 1;
}

.card-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--brand-cyan);
    font-size: .9rem;
    font-weight: 600;
    margin-top: 6px;
}

.card-link svg {
    width: 14px;
    transition: transform .2s ease;
}

.card-link:hover svg {
    transform: translateX(3px);
}

/* CTA */
.article-cta {
    background: linear-gradient(135deg, #0C2230 0%, #0A1726 55%, #111D3A 100%);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: 62px 0;
    position: relative;
    overflow: hidden;
}

.article-cta::before {
    content: "";
    position: absolute;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(0, 224, 184, 0.12), transparent 65%);
    top: -270px;
    left: 50%;
    transform: translateX(-50%);
}

.cta-content {
    position: relative;
    text-align: center;
    max-width: 760px;
    margin: 0 auto;
    padding: 0 20px;
}

.cta-content h2 {
    font-size: clamp(1.5rem, 3vw, 2.2rem);
    line-height: 1.4;
    margin-bottom: 14px;
}

.cta-content p {
    color: var(--text-secondary);
    margin-bottom: 28px;
}

.cta-btn-group {
    display: flex;
    gap: 14px;
    justify-content: center;
    flex-wrap: wrap;
}

/* 页脚 */
.footer {
    background: #060B14;
    border-top: 1px solid rgba(255, 255, 255, 0.07);
    padding: 62px 0 28px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 30px 24px;
    padding-bottom: 38px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.07);
    margin-bottom: 22px;
}

.footer-brand {
    display: flex;
    align-items: center;
    margin-bottom: 14px;
}

.footer-brand .brand-mark {
    width: 36px;
    height: 36px;
}

.footer-about p {
    color: var(--text-muted);
    font-size: .92rem;
    line-height: 1.7;
    max-width: 360px;
}

.footer-title {
    color: var(--text-primary);
    font-size: .96rem;
    font-weight: 600;
    margin-bottom: 16px;
}

.footer-link {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--text-secondary);
    font-size: .92rem;
    line-height: 2.2;
}

.footer-link:hover {
    color: var(--brand-cyan);
}

.footer-news {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.footer-news .footer-news-item {
    display: flex;
    flex-direction: column;
    color: var(--text-secondary);
    font-size: .9rem;
    line-height: 1.6;
}

.footer-news .footer-news-item:hover {
    color: var(--brand-cyan);
}

.footer-bottom {
    text-align: center;
    padding-top: 6px;
}

.footer-bottom p {
    color: rgba(234, 241, 251, 0.4);
    font-size: .8rem;
    line-height: 1.8;
}

.footer-bottom .domain-line {
    font-size: .8rem;
}

/* 按钮样式复用 */
.text-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--brand-cyan);
    font-size: .95rem;
    font-weight: 500;
}

.text-btn svg {
    transition: transform .2s ease;
}

.text-btn:hover svg {
    transform: translateX(4px);
}

/* 响应式 */
@media (min-width: 768px) {
    .related-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-grid {
        grid-template-columns: 1.3fr 1fr 1fr 1.4fr;
    }

    .article-cta {
        padding: 80px 0;
    }

    .article-layout {
        grid-template-columns: minmax(0, 1fr);
    }
}

@media (min-width: 1024px) {
    .article-layout {
        grid-template-columns: minmax(0, 1fr);
    }

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

@media (max-width: 767px) {
    .header-inner {
        gap: 8px;
    }

    .header-cta {
        display: none;
    }

    .article-hero {
        padding-top: 116px;
    }

    .article-hero h1 {
        font-size: 1.4rem;
        line-height: 1.4;
    }

    .article-panel {
        padding: 20px 18px;
    }

    .article-body {
        font-size: 1rem;
    }

    .article-actions {
        flex-direction: column;
        align-items: flex-start;
    }

    .related-head {
        align-items: flex-start;
        flex-direction: column;
    }

    .related-head h2 {
        font-size: 1.5rem;
    }

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

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

    .cta-btn-group a {
        width: 100%;
        justify-content: center;
    }

    .article-meta {
        gap: 8px 14px;
    }
}

/* 动效 */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* roulang page: category1 */
:root {
  --bg-base: #070C17;
  --bg-panel: #0C1524;
  --bg-elevated: #111E33;
  --text-primary: #EAF1FB;
  --text-secondary: rgba(234, 241, 251, 0.68);
  --text-muted: rgba(234, 241, 251, 0.42);
  --line-subtle: rgba(255, 255, 255, 0.08);
  --line-strong: rgba(255, 255, 255, 0.16);
  --glass-bg: rgba(255, 255, 255, 0.055);
  --glass-border: rgba(255, 255, 255, 0.12);
  --brand-primary: #3B82FF;
  --brand-cyan: #00E0B8;
  --brand-glow: rgba(0, 224, 184, 0.38);
  --success: #22C58B;
  --warning: #F5A623;
  --danger: #FF5C7A;
  --radius-lg: 20px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.22);
  --shadow-hover: 0 20px 50px rgba(0, 0, 0, 0.34);
  --section-space: 96px;
}

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

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    transition: none !important;
    animation: none !important;
  }
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", sans-serif;
  background: var(--bg-base);
  color: var(--text-primary);
  font-size: 1rem;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

body.nav-open {
  overflow: hidden;
}

body::selection,
body ::selection {
  background: rgba(0, 224, 184, 0.22);
  color: #fff;
}

h1,
h2,
h3,
h4,
p,
figure,
ul,
ol,
dl,
dd {
  margin: 0;
}

ul,
ol {
  padding: 0;
  list-style: none;
}

img {
  max-width: 100%;
  display: block;
  border: 0;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font: inherit;
  border: 0;
  background: none;
  cursor: pointer;
  color: inherit;
}

a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 2px solid #00E0B8;
  outline-offset: 3px;
  border-radius: 8px;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin-inline: auto;
  padding-inline: 20px;
}

.skip-link {
  position: fixed;
  top: -80px;
  left: 16px;
  z-index: 2000;
  padding: 10px 16px;
  background: #0A1526;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 10px;
  color: #fff;
  font-size: 0.9rem;
  transition: top 0.2s;
}

.skip-link:focus {
  top: 16px;
}

/* ===== Header & Nav ===== */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  height: 72px;
  z-index: 1000;
  display: flex;
  align-items: center;
  background: rgba(7, 12, 23, 0.3);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(18px) saturate(150%);
  -webkit-backdrop-filter: blur(18px) saturate(150%);
  transition: background 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.site-header.scrolled {
  background: rgba(7, 12, 23, 0.9);
  border-bottom-color: rgba(255, 255, 255, 0.12);
  box-shadow: 0 10px 32px rgba(0, 0, 0, 0.32);
}

.nav-bar {
  display: flex;
  align-items: center;
  gap: 24px;
  min-height: 72px;
}

.site-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  border-radius: 12px;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 12px;
  color: var(--brand-cyan);
  background: rgba(0, 224, 184, 0.1);
  border: 1px solid rgba(0, 224, 184, 0.2);
}

.brand-name {
  color: var(--text-primary);
  font-size: 1.08rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  line-height: 1.2;
}

.brand-tag {
  display: inline-flex;
  align-items: center;
  height: 22px;
  padding: 0 9px;
  font-size: 0.72rem;
  font-weight: 600;
  color: #001A14;
  background: var(--brand-cyan);
  border-radius: 999px;
  letter-spacing: 0.02em;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-left: auto;
}

.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  height: 38px;
  padding: 0 15px;
  border-radius: 10px;
  color: var(--text-secondary);
  font-size: 0.95rem;
  font-weight: 500;
  transition: color 0.2s ease, background 0.2s ease;
}

.nav-link:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.05);
}

.nav-link.active {
  color: #fff;
  font-weight: 600;
  background: rgba(255, 255, 255, 0.06);
}

.nav-link.active::after {
  content: "";
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 0;
  height: 2px;
  border-radius: 2px;
  background: var(--brand-cyan);
  box-shadow: 0 0 10px rgba(0, 224, 184, 0.55);
}

.nav-side {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.nav-cta {
  height: 40px;
  padding: 0 18px;
}

.nav-overlay {
  display: none;
}

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
}

.nav-toggle svg {
  width: 20px;
  height: 20px;
  stroke-width: 1.8;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 46px;
  padding: 0 24px;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1;
  white-space: nowrap;
  border: 1px solid transparent;
  transition: transform 0.22s ease, background 0.22s ease, border-color 0.22s ease, box-shadow 0.22s ease, color 0.22s ease;
}

.btn-primary {
  color: #010f16;
  background: linear-gradient(135deg, #16B7FF 0%, #00E0B8 100%);
  box-shadow: 0 0 0 1px rgba(0, 224, 184, 0.24), 0 10px 32px rgba(0, 224, 184, 0.22);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 0 1px rgba(0, 224, 184, 0.4), 0 14px 36px rgba(0, 224, 184, 0.32);
}

.btn-ghost {
  color: rgba(234, 241, 251, 0.88);
  background: rgba(255, 255, 255, 0.055);
  border-color: rgba(255, 255, 255, 0.15);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.28);
  color: #fff;
  transform: translateY(-2px);
}

.btn-xl {
  height: 54px;
  padding: 0 32px;
  font-size: 1.02rem;
  border-radius: 14px;
}

.btn-small {
  height: 36px;
  padding: 0 16px;
  font-size: 0.88rem;
  border-radius: 10px;
}

/* ===== Hero ===== */
.page-hero {
  position: relative;
  padding: 176px 0 104px;
  min-height: 62vh;
  display: flex;
  align-items: center;
  background:
    linear-gradient(180deg, rgba(7, 12, 23, 0.55) 0%, rgba(7, 12, 23, 0.94) 100%),
    radial-gradient(circle at 72% 18%, rgba(59, 130, 255, 0.2), transparent 38%),
    url("/assets/images/backpic/back-2.webp") center / cover no-repeat;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.page-hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0 auto;
  width: 420px;
  height: 420px;
  pointer-events: none;
  background: radial-gradient(circle, rgba(0, 224, 184, 0.1), transparent 70%);
}

.page-hero-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 0.72fr;
  gap: 56px;
  align-items: center;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 26px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.breadcrumb a {
  color: rgba(234, 241, 251, 0.6);
  transition: color 0.2s;
}

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

.breadcrumb-sep {
  color: rgba(234, 241, 251, 0.2);
}

.hero-tagline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 28px;
  padding: 0 12px;
  margin-bottom: 20px;
  border-radius: 999px;
  border: 1px solid rgba(0, 224, 184, 0.28);
  background: rgba(0, 224, 184, 0.08);
  color: #a2ffea;
  font-size: 0.82rem;
  font-weight: 500;
}

.hero-tagline::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--brand-cyan);
  box-shadow: 0 0 8px var(--brand-cyan);
}

.page-hero h1 {
  max-width: 650px;
  margin-bottom: 22px;
  font-size: clamp(2rem, 4.4vw, 3.4rem);
  line-height: 1.24;
  letter-spacing: 0.01em;
  font-weight: 700;
}

.page-hero-subtitle {
  max-width: 620px;
  color: var(--text-secondary);
  font-size: 1.02rem;
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 32px;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 18px 28px;
  margin-top: 40px;
  padding-top: 22px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.hero-meta-item {
  display: flex;
  align-items: center;
  gap: 8px;
  color: rgba(234, 241, 251, 0.62);
  font-size: 0.86rem;
}

.hero-meta-item svg {
  width: 16px;
  height: 16px;
  color: var(--brand-cyan);
}

.hero-visual {
  position: relative;
  border-radius: 22px;
  border: 1px solid rgba(255, 255, 255, 0.13);
  background: rgba(12, 21, 37, 0.66);
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.36);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  overflow: hidden;
}

.hero-visual-top {
  display: flex;
  align-items: center;
  gap: 8px;
  height: 48px;
  padding: 0 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  background: rgba(255, 255, 255, 0.03);
}

.hero-visual-top span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.18);
}

.hero-visual-top .active-dot {
  background: var(--brand-cyan);
}

.hero-visual img {
  width: 100%;
  aspect-ratio: 10 / 7;
  object-fit: cover;
}

.hero-visual-caption {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 16px 18px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  background: rgba(5, 10, 18, 0.68);
  font-size: 0.88rem;
}

.progress-ring {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--brand-cyan);
  font-weight: 600;
}

.progress-ring svg {
  width: 22px;
  height: 22px;
}

/* ===== Section Shared ===== */
.section {
  padding-block: var(--section-space);
}

.section-header {
  max-width: 800px;
  margin-bottom: 48px;
}

.eyebrow {
  margin-bottom: 12px;
  color: var(--brand-cyan);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.05em;
}

.section-title {
  font-size: clamp(1.55rem, 2.6vw, 2.15rem);
  line-height: 1.3;
  margin-bottom: 14px;
  color: var(--text-primary);
  font-weight: 700;
}

.section-desc {
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 1.8;
}

.section-desc + .section-actions {
  margin-top: 20px;
}

/* ===== Intro summary ===== */
.intro-card {
  height: 100%;
}

.intro-card-inner {
  padding: 28px;
  border: 1px solid var(--glass-border);
  border-radius: 18px;
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: background 0.2s ease, border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.intro-card-inner:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.22);
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.intro-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  margin-bottom: 18px;
  border-radius: 14px;
  color: var(--brand-cyan);
  background: rgba(0, 224, 184, 0.1);
  border: 1px solid rgba(0, 224, 184, 0.2);
}

.intro-icon svg {
  width: 22px;
  height: 22px;
}

.intro-card h3 {
  font-size: 1.08rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.intro-card p {
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.7;
}

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

/* ===== Steps ===== */
.steps-section {
  background:
    linear-gradient(180deg, rgba(12, 21, 36, 0.4), rgba(7, 12, 23, 0.1) 60%);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.guide-split {
  display: grid;
  grid-template-columns: minmax(0, 1.16fr) minmax(320px, 0.84fr);
  gap: 48px;
  align-items: start;
}

.guide-item {
  position: relative;
  display: grid;
  grid-template-columns: 76px 1fr;
  gap: 20px;
  padding: 28px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.guide-item.first {
  border-top: 0;
  padding-top: 8px;
}

.guide-step-number {
  display: inline-flex;
  align-items: flex-start;
  font-size: 2.4rem;
  font-weight: 800;
  line-height: 1.1;
  color: transparent;
  -webkit-text-stroke: 1px rgba(0, 224, 184, 0.65);
  letter-spacing: 0.02em;
}

.guide-step-dot {
  display: none;
}

.guide-content h3 {
  font-size: 1.18rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.guide-content p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.75;
  margin-bottom: 12px;
}

.guide-tag {
  display: inline-flex;
  align-items: center;
  height: 24px;
  padding: 0 10px;
  border-radius: 8px;
  color: rgba(234, 241, 251, 0.72);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.09);
  font-size: 0.78rem;
}

.guide-visual {
  position: sticky;
  top: 108px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.13);
  border-radius: 24px;
  background: rgba(13, 22, 38, 0.84);
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.35);
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.35);
}

.guide-visual img {
  width: 100%;
  aspect-ratio: 5 / 4;
  object-fit: cover;
}

.guide-visual figcaption {
  padding: 20px 22px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.guide-visual-helper {
  display: flex;
  gap: 14px;
  align-items: center;
  color: var(--text-secondary);
  font-size: 0.88rem;
}

.check-icon {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: rgba(0, 224, 184, 0.13);
  color: var(--brand-cyan);
  border: 1px solid rgba(0, 224, 184, 0.2);
}

/* ===== Route section ===== */
.route-section {
  background: linear-gradient(180deg, rgba(7, 12, 23, 0.4), rgba(13, 24, 42, 0.66));
}

.route-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.route-panel {
  display: flex;
  flex-direction: column;
  height: 100%;
  overflow: hidden;
  border: 1px solid var(--glass-border);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.05);
  box-shadow: var(--shadow-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: transform 0.2s ease, border-color 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
}

.route-panel:hover {
  background: rgba(255, 255, 255, 0.075);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.route-media {
  position: relative;
}

.route-media img {
  width: 100%;
  aspect-ratio: 8 / 5;
  object-fit: cover;
}

.route-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 46%, rgba(8, 15, 27, 0.76) 100%);
}

.route-badge {
  position: absolute;
  left: 18px;
  bottom: 16px;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  height: 28px;
  padding: 0 12px;
  border-radius: 999px;
  background: rgba(0, 224, 184, 0.15);
  border: 1px solid rgba(0, 224, 184, 0.3);
  color: var(--brand-cyan);
  font-size: 0.82rem;
  font-weight: 600;
}

.route-content {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: 26px 28px 28px;
}

.route-heading {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}

.route-heading .route-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 11px;
  color: var(--brand-cyan);
  background: rgba(0, 224, 184, 0.1);
  border: 1px solid rgba(0, 224, 184, 0.18);
}

.route-heading .route-icon svg {
  width: 18px;
  height: 18px;
}

.route-heading h3 {
  font-size: 1.12rem;
  font-weight: 700;
}

.route-content > p {
  color: var(--text-secondary);
  font-size: 0.93rem;
  margin-bottom: 18px;
}

.route-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin: 0 0 22px;
}

.route-list li {
  display: flex;
  gap: 10px;
  color: rgba(234, 241, 251, 0.82);
  font-size: 0.93rem;
  line-height: 1.6;
}

.route-list li::before {
  content: "";
  flex-shrink: 0;
  width: 6px;
  height: 6px;
  margin-top: 10px;
  border-radius: 50%;
  background: var(--brand-cyan);
  box-shadow: 0 0 8px rgba(0, 224, 184, 0.45);
}

.route-bottom {
  margin-top: auto;
  padding-top: 6px;
}

.route-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--brand-cyan);
  font-size: 0.9rem;
  font-weight: 600;
  transition: gap 0.2s ease, color 0.2s ease;
}

.route-link:hover {
  gap: 11px;
  color: #6fffe3;
}

.route-link svg {
  width: 16px;
  height: 16px;
}

/* ===== Prep Section ===== */
.prep-card {
  position: relative;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 30px;
  padding: 42px;
  border-radius: 26px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background:
    radial-gradient(circle at 12% 18%, rgba(59, 130, 255, 0.13), transparent 34%),
    radial-gradient(circle at 88% 80%, rgba(0, 224, 184, 0.11), transparent 35%),
    rgba(255, 255, 255, 0.05);
  box-shadow: var(--shadow-card);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.prep-title {
  font-size: 1.3rem;
  line-height: 1.4;
  font-weight: 700;
  margin-bottom: 8px;
}

.prep-summary {
  color: var(--text-secondary);
  font-size: 0.94rem;
  max-width: 520px;
}

.prep-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-top: 28px;
}

.prep-item {
  display: flex;
  gap: 16px;
  padding: 14px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.prep-item:last-child {
  border-bottom: 0;
}

.prep-sn {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--brand-cyan);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  border-radius: 10px;
  background: rgba(0, 224, 184, 0.09);
  border: 1px solid rgba(0, 224, 184, 0.15);
}

.prep-item h3 {
  font-size: 0.98rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.prep-item p {
  color: var(--text-secondary);
  font-size: 0.87rem;
  line-height: 1.6;
}

.prep-aside {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  padding: 28px;
  border-radius: 20px;
  border: 1px dashed rgba(0, 224, 184, 0.22);
  background: rgba(7, 12, 23, 0.45);
}

.prep-aside-badge {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  margin-bottom: 12px;
  height: 26px;
  padding: 0 11px;
  border-radius: 999px;
  border: 1px solid rgba(0, 224, 184, 0.28);
  color: var(--brand-cyan);
  background: rgba(0, 224, 184, 0.1);
  font-size: 0.78rem;
  font-weight: 700;
}

.prep-aside h3 {
  font-size: 1.2rem;
  margin-bottom: 10px;
  line-height: 1.5;
}

.prep-aside p {
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.7;
}

.prep-note {
  display: flex;
  gap: 10px;
  margin-top: 18px;
  padding: 12px 14px;
  border-radius: 12px;
  background: rgba(245, 166, 35, 0.08);
  border: 1px solid rgba(245, 166, 35, 0.2);
  color: rgba(255, 220, 170, 0.88);
  font-size: 0.83rem;
  line-height: 1.6;
}

.prep-note svg {
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  margin-top: 3px;
  color: var(--warning);
}

/* ===== FAQ Section ===== */
.faq-section {
  background: linear-gradient(180deg, rgba(7, 12, 23, 0.3), rgba(12, 21, 36, 0.5));
}

.faq-header {
  max-width: 720px;
  margin-bottom: 42px;
}

.faq-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
  align-items: start;
}

.faq-panel {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  border: 1px solid rgba(255, 255, 255, 0.11);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.045);
  transition: background 0.2s ease, border-color 0.2s ease;
  overflow: hidden;
}

.faq-item:hover {
  border-color: rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.065);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 20px;
  font-size: 0.98rem;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.5;
  cursor: pointer;
  user-select: none;
}

.faq-question::after {
  content: "+";
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 8px;
  color: var(--brand-cyan);
  background: rgba(0, 224, 184, 0.09);
  font-size: 1.2rem;
  font-weight: 500;
  transition: transform 0.2s ease, background 0.2s ease;
}

.faq-item[open] .faq-question::after {
  transform: rotate(45deg);
  background: rgba(0, 224, 184, 0.2);
}

.faq-body {
  padding: 0 20px 18px;
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.75;
}

/* ===== Final CTA ===== */
.cta-section {
  padding-top: 0;
  padding-bottom: 96px;
}

.cta-card {
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 72px 40px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 32px;
  text-align: center;
  background:
    linear-gradient(180deg, rgba(7, 12, 23, 0.72), rgba(9, 19, 33, 0.94)),
    url("/assets/images/backpic/back-3.png") center / cover no-repeat;
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.42);
}

.cta-card::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(circle at 50% 0%, rgba(0, 224, 184, 0.15), transparent 46%);
}

.cta-card > * {
  position: relative;
  z-index: 1;
}

.cta-title {
  font-size: clamp(1.7rem, 3.2vw, 2.6rem);
  line-height: 1.3;
  font-weight: 700;
  max-width: 760px;
  margin-bottom: 16px;
}

.cta-desc {
  max-width: 620px;
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 1.8;
  margin-bottom: 32px;
}

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

.cta-trust {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px 28px;
  margin-top: 28px;
  color: rgba(234, 241, 251, 0.58);
  font-size: 0.86rem;
}

.cta-trust span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.cta-trust svg {
  width: 16px;
  height: 16px;
  color: var(--brand-cyan);
}

/* ===== Footer ===== */
.footer {
  background: #050A12;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 64px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 0.9fr 1fr 1.35fr;
  gap: 40px;
  padding-bottom: 48px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}

.footer-brand .brand-mark {
  width: 36px;
  height: 36px;
}

.footer-about p {
  max-width: 320px;
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.75;
}

.footer h4 {
  margin-bottom: 14px;
  color: rgba(234, 241, 251, 0.92);
  font-size: 0.95rem;
  font-weight: 700;
}

.footer-link {
  display: block;
  padding: 4px 0;
  color: var(--text-secondary);
  font-size: 0.88rem;
  transition: color 0.2s ease, padding-left 0.2s ease;
}

.footer-link:hover {
  color: var(--brand-cyan);
  padding-left: 4px;
}

.footer-news-item {
  display: block;
  padding: 8px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  color: var(--text-secondary);
  font-size: 0.88rem;
  transition: color 0.2s;
}

.footer-news-item:last-child {
  border-bottom: 0;
}

.footer-news-item:hover {
  color: var(--brand-cyan);
}

.footer-news-item span,
.footer-news-item time {
  display: block;
}

.footer-news-item time {
  margin-top: 4px;
  color: var(--text-muted);
  font-size: 0.76rem;
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding-block: 22px;
  border-top: 1px solid rgba(255, 255, 255, 0.07);
  color: var(--text-muted);
  font-size: 0.78rem;
}

/* ===== Responsive ===== */
@media (max-width: 1023px) {
  .nav-toggle {
    display: inline-flex;
  }

  .main-nav {
    position: fixed;
    top: 0;
    right: 0;
    z-index: 1200;
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
    width: min(78%, 340px);
    height: 100dvh;
    padding: 92px 24px 32px;
    margin: 0;
    background: rgba(7, 12, 23, 0.97);
    border-left: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: -18px 0 50px rgba(0, 0, 0, 0.3);
    transform: translateX(105%);
    visibility: hidden;
    transition: transform 0.3s ease, visibility 0.3s ease;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
  }

  .main-nav .nav-link {
    width: 100%;
    height: 46px;
    font-size: 1rem;
    border-radius: 10px;
  }

  .main-nav .nav-link.active::after {
    left: 16px;
    right: auto;
    width: 34px;
  }

  body.nav-open .main-nav {
    transform: none;
    visibility: visible;
  }

  .nav-overlay {
    position: fixed;
    inset: 0;
    z-index: 1100;
    background: rgba(3, 7, 13, 0.72);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.25s ease, visibility 0.25s ease;
  }

  body.nav-open .nav-overlay {
    opacity: 1;
    visibility: visible;
  }

  .page-hero-inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .hero-visual {
    max-width: 560px;
  }

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

  .guide-split {
    grid-template-columns: 1fr;
  }

  .guide-visual {
    position: static;
    max-width: 640px;
  }

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

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

  .prep-card {
    grid-template-columns: 1fr;
    padding: 30px;
  }

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

@media (max-width: 767px) {
  :root {
    --section-space: 48px;
  }

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

  .nav-bar {
    gap: 10px;
  }

  .brand-name {
    font-size: 0.95rem;
  }

  .brand-tag {
    height: 20px;
    font-size: 0.66rem;
    padding: 0 7px;
  }

  .nav-cta {
    display: none;
  }

  .page-hero {
    padding: 126px 0 72px;
    min-height: 0;
  }

  .page-hero h1 {
    font-size: 2rem;
  }

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

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

  .hero-meta {
    gap: 12px 16px;
    margin-top: 28px;
    font-size: 0.8rem;
  }

  .section-header {
    margin-bottom: 28px;
  }

  .guide-item {
    grid-template-columns: 1fr;
    gap: 10px;
    padding: 22px 0;
  }

  .guide-step-number {
    font-size: 2rem;
  }

  .route-content {
    padding: 20px;
  }

  .prep-card {
    padding: 22px;
    border-radius: 20px;
  }

  .prep-aside {
    padding: 20px;
  }

  .faq-question {
    font-size: 0.92rem;
  }

  .faq-body {
    padding: 0 16px 16px;
    font-size: 0.87rem;
  }

  .cta-card {
    padding: 44px 22px;
    border-radius: 22px;
  }

  .cta-actions {
    flex-direction: column;
    align-items: stretch;
    width: 100%;
    max-width: 360px;
    margin-inline: auto;
  }

  .cta-actions .btn {
    width: 100%;
  }

  .cta-trust {
    gap: 10px 16px;
    font-size: 0.78rem;
  }

  .footer {
    padding-top: 42px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 26px;
  }

  .footer-bottom {
    flex-direction: column;
    justify-content: flex-start;
  }

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

/* roulang page: category2 */
:root {
  --bg-base: #070C17;
  --bg-panel: #0C1524;
  --bg-elevated: #111E33;
  --text-primary: #EAF1FB;
  --text-secondary: rgba(234,241,251,0.68);
  --text-muted: rgba(234,241,251,0.42);
  --line-subtle: rgba(255,255,255,0.08);
  --line-strong: rgba(255,255,255,0.16);
  --glass-bg: rgba(255,255,255,0.055);
  --glass-bg-hover: rgba(255,255,255,0.09);
  --glass-border: rgba(255,255,255,0.12);
  --brand-primary: #3B82FF;
  --brand-cyan: #00E0B8;
  --brand-glow: rgba(0,224,184,0.38);
  --success: #22C58B;
  --warning: #F5A623;
  --danger: #FF5C7A;
  --btn-gradient: linear-gradient(135deg, #3B82FF, #00E0B8);
  --radius-xl: 20px;
  --radius-lg: 18px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --shadow-card: 0 10px 30px rgba(0,0,0,0.22);
  --shadow-hover: 0 20px 50px rgba(0,0,0,0.3);
  --shadow-glow: 0 0 0 1px rgba(0,224,184,0.28), 0 8px 30px rgba(0,224,184,0.28);
  --space-section: 96px;
  --font-base: -apple-system, "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", sans-serif;
}

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

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

body {
  font-family: var(--font-base);
  background: var(--bg-base);
  color: var(--text-primary);
  line-height: 1.7;
  font-size: 1rem;
  min-height: 100vh;
  background-image:
    radial-gradient(circle at 12% 8%, rgba(59,130,255,0.10), transparent 28%),
    radial-gradient(circle at 88% 16%, rgba(0,224,184,0.08), transparent 22%);
  overflow-x: hidden;
}

body.no-scroll {
  overflow: hidden;
}

ul, ol {
  list-style: none;
}

a {
  color: inherit;
  text-decoration: none;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

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

button, input, textarea, select {
  font: inherit;
  color: inherit;
}

:focus-visible {
  outline: 2px solid #00E0B8;
  outline-offset: 3px;
  border-radius: 4px;
}

.container {
  width: min(1200px, 100% - 40px);
  margin-inline: auto;
}

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

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  flex: 0 0 40px;
  border-radius: 12px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  color: var(--brand-cyan);
  box-shadow: inset 0 0 16px rgba(0,224,184,0.08);
}

.brand-mark svg {
  width: 22px;
  height: 22px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.brand-name {
  font-size: 1.18rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--text-primary);
  line-height: 1;
}

.brand-tag {
  font-size: 0.76rem;
  font-weight: 600;
  color: #06231b;
  background: linear-gradient(135deg, #3BFFF0, #00E0B8);
  border-radius: 999px;
  padding: 4px 9px;
  line-height: 1.2;
  letter-spacing: 0.02em;
  box-shadow: 0 0 14px rgba(0,224,184,0.16);
  white-space: nowrap;
}

.header {
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  position: fixed;
  height: 72px;
  background: rgba(7, 12, 23, 0.42);
  backdrop-filter: blur(16px) saturate(150%);
  -webkit-backdrop-filter: blur(16px) saturate(150%);
  border-bottom: 1px solid rgba(255,255,255,0.07);
  transition: background 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.header.scrolled {
  background: rgba(7, 12, 23, 0.9);
  border-bottom-color: rgba(255,255,255,0.12);
  box-shadow: 0 10px 26px rgba(0,0,0,0.32);
}

.header-inner {
  height: 72px;
  display: flex;
  align-items: center;
  gap: 18px;
}

.main-nav {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 40px;
  padding: 0 14px;
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: background 0.2s ease, color 0.2s ease;
  white-space: nowrap;
}

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

.nav-link.active {
  color: var(--brand-cyan);
  background: rgba(0,224,184,0.1);
}

.nav-link.active::after {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--brand-cyan);
  box-shadow: 0 0 9px var(--brand-glow);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-left: 2px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 46px;
  padding: 0 26px;
  border-radius: var(--radius-md);
  border: 0;
  cursor: pointer;
  font-size: 0.95rem;
  font-weight: 600;
  transition: transform .2s ease, box-shadow .2s ease, filter .2s ease, background .2s ease;
  white-space: nowrap;
  text-decoration: none;
}

.btn-primary {
  background: var(--btn-gradient);
  color: #04100D;
  box-shadow: 0 0 0 1px rgba(0,224,184,0.2), 0 8px 26px rgba(0,224,184,0.24);
}

.btn-primary:hover {
  filter: brightness(1.08);
  transform: translateY(-2px);
  box-shadow: 0 0 0 1px rgba(0,224,184,0.34), 0 12px 34px rgba(0,224,184,0.3);
}

.btn-secondary {
  background: rgba(255,255,255,0.06);
  color: rgba(234,241,251,0.82);
  border: 1px solid rgba(255,255,255,0.14);
}

.btn-secondary:hover {
  background: rgba(255,255,255,0.12);
  border-color: rgba(255,255,255,0.28);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(0,0,0,0.18);
}

.btn-light {
  background: rgba(255,255,255,0.08);
  color: var(--text-primary);
  border: 1px solid rgba(255,255,255,0.14);
}

.btn-sm {
  height: 36px;
  padding: 0 16px;
  font-size: 0.88rem;
  border-radius: 10px;
}

.btn-lg {
  height: 54px;
  padding: 0 36px;
  border-radius: 14px;
  font-size: 1.02rem;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 24px;
  padding: 0 11px;
  border-radius: 999px;
  font-size: 0.8rem;
  background: rgba(0,224,184,0.1);
  color: var(--brand-cyan);
  border: 1px solid rgba(0,224,184,0.18);
  white-space: nowrap;
}

.chip::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 999px;
  background: currentColor;
  box-shadow: 0 0 8px rgba(0,224,184,0.6);
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-weight: 600;
  color: var(--brand-cyan);
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
  font-size: 0.92rem;
}

.text-link span {
  transition: transform .18s ease;
}

.text-link:hover span {
  transform: translateX(4px);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 7px 14px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.12);
  background: rgba(255,255,255,0.05);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(234,241,251,0.74);
}

.eyebrow::before {
  width: 6px;
  height: 6px;
  content: "";
  border-radius: 999px;
  flex: 0 0 auto;
  background: var(--brand-cyan);
  box-shadow: 0 0 12px var(--brand-glow);
}

.glass-panel {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  backdrop-filter: blur(14px);
}

.icon-circle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 14px;
  color: var(--brand-cyan);
  background: rgba(0,224,184,0.09);
  border: 1px solid rgba(0,224,184,0.14);
  box-shadow: 0 0 20px rgba(0,224,184,0.08);
  flex: 0 0 auto;
}

.icon-circle svg {
  width: 22px;
  height: 22px;
}

.page-hero {
  position: relative;
  display: flex;
  align-items: center;
  padding: 158px 0 58px;
  background: linear-gradient(180deg, rgba(7,12,23,0.6), rgba(7,12,23,0.92)), url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
  min-height: 480px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.page-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 82% 30%, rgba(0,224,184,0.14), transparent 26%);
  pointer-events: none;
}

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

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 9px;
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 28px;
}

.breadcrumb a {
  color: var(--text-secondary);
  transition: color .18s ease;
}

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

.breadcrumb i {
  opacity: 0.6;
  font-style: normal;
}

.breadcrumb .current {
  color: var(--text-muted);
}

.page-hero h1 {
  font-size: clamp(2rem, 4.4vw, 3.4rem);
  line-height: 1.24;
  font-weight: 700;
  max-width: 900px;
  letter-spacing: -0.01em;
  margin: 20px 0 22px;
}

.hero-lead {
  color: var(--text-secondary);
  font-size: 1.06rem;
  line-height: 1.8;
  max-width: 780px;
  margin-bottom: 32px;
}

.hero-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 26px;
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-hero .brand-badge {
  font-size: 0.84rem;
  color: var(--text-secondary);
  background: rgba(255,255,255,0.04);
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.08);
}

.doc-section {
  padding: 90px 0 0;
}

.doc-layout {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  gap: 32px;
  align-items: start;
}

.doc-sidebar {
  position: sticky;
  top: 104px;
  background: var(--bg-panel);
  border: 1px solid var(--line-subtle);
  border-radius: 18px;
  padding: 22px 18px;
  box-shadow: var(--shadow-card);
}

.doc-sidebar-title {
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--text-secondary);
  margin-bottom: 16px;
  padding-left: 12px;
}

.doc-sidebar-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.doc-sidebar-link {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 0.9rem;
  padding: 10px 12px;
  border-radius: 10px;
  color: var(--text-secondary);
  transition: background 0.18s ease, color 0.18s ease, padding-left 0.18s ease;
}

.doc-sidebar-link::before {
  content: "";
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: rgba(255,255,255,0.22);
  transition: background .18s ease;
}

.doc-sidebar-link:hover {
  color: var(--text-primary);
  background: rgba(255,255,255,0.06);
  padding-left: 16px;
}

.doc-sidebar-link:hover::before {
  background: var(--brand-cyan);
  box-shadow: 0 0 8px var(--brand-glow);
}

.doc-sidebar-button {
  margin: 18px 12px 6px;
}

.doc-main {
  min-width: 0;
}

.doc-card {
  padding: 38px;
  margin-bottom: 32px;
  background: rgba(255,255,255,0.045);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 22px;
  box-shadow: 0 10px 26px rgba(0,0,0,0.2);
  transition: border-color .2s ease, background .2s ease;
  backdrop-filter: blur(12px);
}

.doc-card:hover {
  border-color: rgba(255,255,255,0.16);
}

.doc-card > h2 {
  font-size: clamp(1.45rem, 2.6vw, 2rem);
  line-height: 1.3;
  margin-bottom: 10px;
  color: var(--text-primary);
}

.doc-card > .lead-copy {
  font-size: 0.98rem;
  color: var(--text-secondary);
  max-width: 760px;
  margin-bottom: 24px;
}

.section-head {
  margin-bottom: 30px;
}

.section-head h2 {
  font-size: clamp(1.55rem, 2.6vw, 2.25rem);
  line-height: 1.28;
  margin: 14px 0 8px;
}

.section-head p {
  color: var(--text-secondary);
  max-width: 760px;
  font-size: 0.98rem;
}

.method-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.method-card {
  padding: 24px;
  border-radius: 18px;
  background: rgba(255,255,255,0.045);
  border: 1px solid rgba(255,255,255,0.1);
  transition: transform .2s ease, border-color .2s ease, background .2s ease, box-shadow .2s ease;
}

.method-card:hover {
  transform: translateY(-4px);
  background: rgba(255,255,255,0.09);
  border-color: rgba(255,255,255,0.22);
  box-shadow: 0 14px 30px rgba(0,0,0,0.18);
}

.method-card h3 {
  font-size: 1.1rem;
  margin: 18px 0 8px;
  font-weight: 700;
}

.method-card p {
  font-size: 0.92rem;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.inline-actions {
  display: flex;
  gap: 12px;
}

.flow-block {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
  gap: 26px;
  align-items: center;
}

.flow-copy {
  padding-right: 10px;
}

.step-list {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.step-item {
  display: flex;
  gap: 15px;
}

.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  flex: 0 0 34px;
  border-radius: 50%;
  font-weight: 700;
  color: var(--brand-cyan);
  background: rgba(0,224,184,0.1);
  border: 1px solid rgba(0,224,184,0.22);
}

.step-item h4 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.step-item p {
  color: var(--text-secondary);
  font-size: 0.92rem;
}

.flow-media {
  border-radius: 20px;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.13);
  box-shadow: 0 18px 38px rgba(0,0,0,0.26);
}

.flow-media img {
  width: 100%;
  height: 270px;
  object-fit: cover;
}

.issued-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.issue-row {
  display: flex;
  gap: 18px;
  padding: 20px 22px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.09);
  border-radius: 16px;
  transition: background .2s ease;
}

.issue-row:hover {
  background: rgba(255,255,255,0.07);
}

.issue-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 12px;
  flex: 0 0 38px;
  color: var(--warning);
  background: rgba(245,166,35,0.12);
}

.issue-icon svg {
  width: 18px;
  height: 18px;
}

.issue-row h3 {
  font-size: 0.98rem;
  font-weight: 700;
  margin-bottom: 5px;
}

.issue-row p {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.security-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.security-card {
  display: flex;
  gap: 15px;
  padding: 22px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.09);
  border-radius: 17px;
  transition: transform .2s ease, background .2s ease;
}

.security-card:hover {
  transform: translateY(-3px);
  background: rgba(255,255,255,0.07);
}

.security-card.warning-card .icon-circle {
  color: var(--warning);
  background: rgba(245,166,35,0.1);
  border-color: rgba(245,166,35,0.14);
}

.security-card h3 {
  font-size: 1rem;
  margin-bottom: 6px;
  font-weight: 700;
}

.security-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.icon-circle.small {
  width: 38px;
  height: 38px;
  border-radius: 12px;
}

.icon-circle.small svg {
  width: 18px;
  height: 18px;
}

.faq-section {
  padding: 80px 0;
}

.faq-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 46px;
}

.faq-head h2 {
  font-size: clamp(1.7rem, 3vw, 2.4rem);
  line-height: 1.28;
  margin: 16px 0 12px;
}

.faq-head p {
  color: var(--text-secondary);
}

.faq-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: start;
  gap: 18px;
}

.faq-item {
  background: rgba(255,255,255,0.045);
  border: 1px solid rgba(255,255,255,0.11);
  border-radius: 16px;
  overflow: hidden;
  transition: background .2s ease, border-color .2s ease;
}

.faq-item:hover {
  border-color: rgba(255,255,255,0.2);
}

.faq-item summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 18px 20px;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.95rem;
  line-height: 1.45;
  color: var(--text-primary);
  border-radius: 16px;
  list-style: none;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "+";
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 8px;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.14);
  color: var(--brand-cyan);
  font-size: 1.2rem;
  font-weight: 500;
  line-height: 1;
  transition: transform 0.22s ease, background 0.22s ease;
  flex: 0 0 auto;
}

.faq-item[open] summary::after {
  transform: rotate(135deg);
  background: rgba(0,224,184,0.14);
}

.faq-item .faq-answer {
  padding: 0 20px 18px;
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.85;
  border-top: 1px solid rgba(255,255,255,0.06);
  margin-top: 2px;
}

.faq-item .faq-answer p {
  padding-top: 14px;
}

.cta-block {
  position: relative;
  margin: 20px 0 96px;
  border-radius: 26px;
  overflow: hidden;
  padding: 64px 42px;
  text-align: center;
  background: linear-gradient(180deg, rgba(7,12,23,0.72), rgba(7,12,23,0.94)), url("/assets/images/backpic/back-1.webp") center/cover no-repeat;
  border: 1px solid rgba(255,255,255,0.12);
}

.cta-block h2 {
  font-size: clamp(1.7rem, 3vw, 2.5rem);
  line-height: 1.3;
  max-width: 820px;
  margin: 0 auto 16px;
}

.cta-block p {
  color: var(--text-secondary);
  max-width: 700px;
  margin: 0 auto 36px;
  font-size: 1rem;
}

.cta-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 15px;
}

.footer {
  background: #05090F;
  border-top: 1px solid var(--line-subtle);
  padding: 66px 0 0;
  color: var(--text-secondary);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 0.8fr 0.9fr 1.1fr;
  gap: 40px;
  padding-bottom: 46px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
}

.footer-about p {
  font-size: 0.91rem;
  color: rgba(234,241,251,0.56);
  line-height: 1.78;
  max-width: 280px;
  margin-top: 14px;
}

.footer-title {
  color: var(--text-primary);
  font-weight: 700;
  font-size: 1rem;
  margin-bottom: 18px;
}

.footer-link {
  display: block;
  padding: 7px 0;
  font-size: 0.92rem;
  color: rgba(234,241,251,0.56);
  transition: color .18s ease;
}

.footer-link:hover {
  color: var(--brand-cyan);
}

.footer-news-item {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding: 8px 0;
  border-bottom: 1px dashed rgba(255,255,255,0.07);
  font-size: 0.9rem;
  color: rgba(234,241,251,0.66);
  transition: color 0.18s ease, border-color .18s ease;
}

.footer-news-item:last-child {
  border-bottom: 0;
}

.footer-news-item:hover {
  color: var(--brand-cyan);
  border-color: rgba(0,224,184,0.25);
}

.footer-news-item time {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding: 18px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
  font-size: 0.82rem;
  color: rgba(234,241,251,0.34);
}

.footer-bottom span:first-child {
  color: rgba(234,241,251,0.42);
}

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.11);
  color: var(--text-primary);
  border-radius: 10px;
  cursor: pointer;
  margin-left: 2px;
}

.nav-toggle svg {
  width: 21px;
  height: 21px;
}

@media (min-width: 1024px) {
  .dos-lg-open .main-nav {
    display: flex;
  }
}

@media (max-width: 1180px) {
  .nav-link {
    padding: 0 10px;
    font-size: 0.92rem;
  }
  .footer-grid {
    grid-template-columns: 1.2fr 0.8fr 0.9fr 1.1fr;
    gap: 28px;
  }
}

@media (max-width: 1023px) {
  :root {
    --space-section: 60px;
  }

  .header,
  .header-inner {
    height: 64px;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .main-nav {
    position: fixed;
    top: 64px;
    right: 0;
    width: min(340px, 92vw);
    height: calc(100vh - 64px);
    margin: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
    padding: 28px 20px 24px;
    background: rgba(7,12,23,0.96);
    border-left: 1px solid var(--line-strong);
    background-image: radial-gradient(circle at 20% 0%, rgba(0,224,184,0.1), transparent 32%);
    transform: translateX(105%);
    visibility: hidden;
    transition: transform 0.3s ease, visibility 0.3s ease;
    z-index: 81;
    backdrop-filter: blur(20px);
    margin-right: 0;
  }

  .header.nav-open .main-nav {
    transform: translateX(0);
    visibility: visible;
  }

  .nav-link {
    height: 46px;
    padding: 0 16px;
    font-size: 1rem;
    border-radius: 12px;
  }

  .doc-layout {
    grid-template-columns: 1fr;
  }

  .doc-sidebar {
    position: relative;
    top: auto;
    display: none;
  }

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

  .flow-block {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 767px) {
  :root {
    --space-section: 46px;
  }

  .container {
    width: min(100% - 28px, 720px);
  }

  .header-inner {
    gap: 8px;
  }

  .brand-name {
    font-size: 1.08rem;
  }

  .brand-tag {
    font-size: 0.7rem;
    padding: 3px 8px;
  }

  .header .brand-mark {
    width: 34px;
    height: 34px;
    border-radius: 10px;
    flex-basis: 34px;
  }

  .header .brand-mark svg {
    width: 18px;
    height: 18px;
  }

  .header-actions .btn {
    display: none;
  }

  .page-hero {
    padding: 108px 0 46px;
    min-height: 420px;
  }

  .page-hero h1 {
    font-size: clamp(1.85rem, 8vw, 2.6rem);
    line-height: 1.27;
  }

  .hero-lead {
    font-size: 0.96rem;
  }

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

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

  .doc-card {
    padding: 26px 20px;
    border-radius: 18px;
  }

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

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

  .issue-row {
    flex-direction: column;
    gap: 10px;
  }

  .cta-block {
    padding: 48px 20px;
  }

  .cta-block h2 {
    font-size: 1.6rem;
  }

  .cta-actions {
    flex-direction: column;
  }

  .cta-actions .btn {
    width: 100%;
  }

  .faq-section {
    padding: 48px 0;
  }

  .faq-grid {
    gap: 14px;
  }

  .footer {
    padding-top: 44px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 26px;
    padding-bottom: 28px;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
    align-items: center;
    gap: 8px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* roulang page: category3 */
:root {
            --bg-base: #070C17;
            --bg-panel: #0C1524;
            --bg-elevated: #111E33;
            --text-primary: #EAF1FB;
            --text-secondary: rgba(234, 241, 251, 0.68);
            --text-muted: rgba(234, 241, 251, 0.42);
            --line-subtle: rgba(255, 255, 255, 0.08);
            --line-strong: rgba(255, 255, 255, 0.16);
            --glass-bg: rgba(255, 255, 255, 0.055);
            --glass-border: rgba(255, 255, 255, 0.12);
            --brand-primary: #3B82FF;
            --brand-cyan: #00E0B8;
            --brand-glow: rgba(0, 224, 184, 0.38);
            --success: #22C58B;
            --warning: #F5A623;
            --danger: #FF5C7A;
            --grad-cta: linear-gradient(135deg, #00A6FF, #00E0B8);
            --grad-head: linear-gradient(135deg, #3B82FF, #00A6FF, #00E0B8);
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-sm: 8px;
            --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.22);
            --shadow-hover: 0 20px 50px rgba(0, 0, 0, 0.3);
            --shadow-cta: 0 0 0 1px rgba(0, 224, 184, 0.28), 0 8px 30px rgba(0, 224, 184, 0.26);
            --container: 1200px;
            --font: -apple-system, "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font);
            background: var(--bg-base);
            color: var(--text-primary);
            line-height: 1.75;
            font-size: 1rem;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            color: inherit;
            text-decoration: none;
        }

        button,
        input,
        summary {
            font-family: inherit;
        }

        button {
            border: 0;
            cursor: pointer;
        }

        .container {
            width: 100%;
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 20px;
        }

        section,
        footer {
            position: relative;
        }

        .section {
            padding: 96px 0;
        }

        .section-head {
            max-width: 760px;
            margin-bottom: 44px;
        }

        .section-head.center {
            margin-left: auto;
            margin-right: auto;
            text-align: center;
        }

        .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--brand-cyan);
            letter-spacing: 0.04em;
            margin-bottom: 12px;
        }

        .eyebrow::before {
            content: "";
            width: 18px;
            height: 2px;
            border-radius: 99px;
            background: var(--grad-cta);
        }

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

        h1 {
            font-size: clamp(2rem, 4.4vw, 3.4rem);
            line-height: 1.2;
        }

        h2 {
            font-size: clamp(1.55rem, 2.6vw, 2.25rem);
            line-height: 1.25;
            margin-bottom: 18px;
        }

        h3 {
            font-size: clamp(1.15rem, 1.6vw, 1.4rem);
            line-height: 1.4;
        }

        p {
            color: var(--text-secondary);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-size: 0.95rem;
            font-weight: 600;
            padding: 0 24px;
            height: 46px;
            border-radius: 12px;
            transition: all 0.25s ease;
            border: 1px solid transparent;
            white-space: nowrap;
        }

        .btn-primary {
            background: var(--grad-cta);
            color: #07131C;
            box-shadow: var(--shadow-cta);
        }

        .btn-primary:hover {
            filter: brightness(1.06);
            transform: translateY(-2px);
            box-shadow: 0 0 0 1px rgba(0, 224, 184, 0.38), 0 12px 34px var(--brand-glow);
        }

        .btn-ghost {
            background: rgba(255, 255, 255, 0.06);
            border-color: rgba(255, 255, 255, 0.16);
            color: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
        }

        .btn-ghost:hover {
            background: rgba(255, 255, 255, 0.11);
            border-color: rgba(255, 255, 255, 0.28);
            transform: translateY(-2px);
        }

        .btn-dark {
            background: rgba(7, 12, 23, 0.7);
            color: #fff;
            border-color: rgba(255, 255, 255, 0.12);
        }

        a:focus-visible,
        button:focus-visible,
        summary:focus-visible {
            outline: 2px solid #00E0B8;
            outline-offset: 3px;
        }

        .header {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 100;
            border-bottom: 1px solid transparent;
        }

        .header-inner {
            display: flex;
            align-items: center;
            height: 72px;
            justify-content: space-between;
        }

        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .brand-mark {
            width: 38px;
            height: 38px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 12px;
            color: var(--brand-cyan);
            border: 1px solid rgba(0, 224, 184, 0.26);
            background: rgba(0, 224, 184, 0.08);
            box-shadow: 0 0 20px rgba(0, 224, 184, 0.08);
        }

        .brand-name {
            font-size: 1.1rem;
            font-weight: 700;
            color: #fff;
        }

        .brand-tag {
            font-size: 0.72rem;
            font-weight: 600;
            color: #07131c;
            background: var(--grad-cta);
            padding: 3px 8px;
            border-radius: 99px;
            letter-spacing: 0.03em;
            margin-left: -2px;
        }

        .nav-mobile {
            display: none;
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: flex-end;
            gap: 8px;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .nav-link {
            position: relative;
            padding: 10px 13px;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: 8px;
            transition: color 0.2s ease, background 0.2s ease;
        }

        .nav-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.06);
        }

        .nav-link.active {
            color: #fff;
            font-weight: 600;
        }

        .nav-link.active::after {
            content: "";
            position: absolute;
            left: 14px;
            right: 14px;
            bottom: -2px;
            height: 2px;
            border-radius: 99px;
            background: var(--grad-cta);
            box-shadow: 0 0 12px var(--brand-glow);
        }

        .nav-cta {
            height: 40px;
            padding: 0 20px;
            margin-left: 10px;
            font-size: 0.9rem;
        }

        .site-header.scrolled {
            position: fixed;
            background: rgba(7, 12, 23, 0.9);
            backdrop-filter: blur(18px) saturate(150%);
            -webkit-backdrop-filter: blur(18px) saturate(150%);
            border-bottom-color: rgba(255, 255, 255, 0.08);
            box-shadow: 0 12px 42px rgba(0, 0, 0, 0.36);
        }

        .hero {
            min-height: 62vh;
            display: flex;
            align-items: center;
            padding: 164px 0 80px;
            background: linear-gradient(rgba(7, 12, 23, 0.88), rgba(7, 12, 23, 0.72)), url("/assets/images/backpic/back-2.webp") center / cover;
            overflow: hidden;
        }

        .hero-content {
            max-width: 940px;
            margin: 0 auto;
            text-align: center;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 22px;
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: var(--text-secondary);
            transition: color 0.2s ease;
        }

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

        .hero h1 {
            margin-bottom: 22px;
            letter-spacing: -0.01em;
        }

        .hero-desc {
            max-width: 680px;
            margin: 0 auto 34px;
            font-size: 1.05rem;
            color: var(--text-secondary);
        }

        .hero-actions {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 12px;
        }

        .hero-stats {
            margin-top: 64px;
            max-width: 1000px;
            margin-left: auto;
            margin-right: auto;
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-lg);
            background: rgba(255, 255, 255, 0.04);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            padding: 28px 22px;
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 18px;
        }

        .stat-item {
            text-align: center;
            padding: 0 10px;
        }

        .stat-value {
            font-size: clamp(1.4rem, 2vw, 1.9rem);
            font-weight: 700;
            color: #fff;
            line-height: 1.3;
        }

        .stat-label {
            font-size: 0.86rem;
            color: var(--text-secondary);
            margin-top: 6px;
        }

        .stat-dot {
            display: inline-block;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--brand-cyan);
            box-shadow: 0 0 12px var(--brand-cyan);
            margin-right: 6px;
            vertical-align: 2px;
        }

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

        .card-info {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-lg);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            padding: 24px 22px;
            box-shadow: var(--shadow-card);
            transition: transform 0.25s ease, border-color 0.25s ease, background 0.25s ease;
        }

        .card-info:hover {
            transform: translateY(-4px);
            border-color: rgba(255, 255, 255, 0.2);
            background: rgba(255, 255, 255, 0.08);
        }

        .card-icon {
            width: 46px;
            height: 46px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 18px;
            color: var(--brand-cyan);
            background: rgba(0, 224, 184, 0.12);
            border: 1px solid rgba(0, 224, 184, 0.14);
        }

        .card-info h3 {
            margin-bottom: 10px;
        }

        .card-info p {
            font-size: 0.94rem;
            margin-bottom: 16px;
        }

        .link-more {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.86rem;
            font-weight: 600;
            color: var(--brand-cyan);
            transition: gap 0.2s ease;
        }

        .link-more:hover {
            gap: 10px;
        }

        .media-frame {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--line-subtle);
            box-shadow: var(--shadow-hover);
        }

        .media-frame img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .split-wrap {
            display: grid;
            grid-template-columns: 1fr 0.95fr;
            gap: 60px;
            align-items: center;
        }

        .split-meta {
            padding: 24px;
        }

        .chip-list {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .chip {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.8rem;
            color: var(--text-secondary);
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 99px;
            padding: 5px 12px;
        }

        .chip::before {
            content: "";
            width: 5px;
            height: 5px;
            background: var(--brand-cyan);
            border-radius: 50%;
            box-shadow: 0 0 8px var(--brand-cyan);
        }

        .full-media {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--line-subtle);
            box-shadow: var(--shadow-card);
            background: var(--bg-panel);
            height: 100%;
        }

        .full-media img {
            width: 100%;
            height: 300px;
            object-fit: cover;
        }

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

        .step-item {
            background: var(--bg-elevated);
            border: 1px solid rgba(255, 255, 255, 0.09);
            border-radius: var(--radius-lg);
            padding: 28px 20px;
            position: relative;
            overflow: hidden;
            transition: transform 0.25s ease, border-color 0.25s ease, background 0.25s ease;
        }

        .step-item:hover {
            transform: translateY(-6px);
            border-color: rgba(255, 255, 255, 0.2);
            background: rgba(17, 30, 51, 0.9);
            box-shadow: var(--shadow-hover);
        }

        .step-index {
            font-size: 2.1rem;
            font-weight: 700;
            line-height: 1;
            display: block;
            margin-bottom: 20px;
            background: linear-gradient(135deg, #3B82FF, #00E0B8);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }

        .step-item h3 {
            font-size: 1.06rem;
            margin-bottom: 10px;
        }

        .step-item p {
            font-size: 0.9rem;
        }

        .attention-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 22px;
        }

        .attention-card {
            display: flex;
            gap: 16px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-lg);
            padding: 24px;
        }

        .attention-card svg {
            flex-shrink: 0;
            margin-top: 3px;
        }

        .attention-title {
            color: #fff;
            font-weight: 600;
            margin-bottom: 6px;
        }

        .attention-card p {
            font-size: 0.9rem;
            color: var(--text-secondary);
        }

        .entry-path {
            background: linear-gradient(135deg, rgba(17, 30, 51, 0.92), rgba(7, 12, 23, 0.95)), url("/assets/images/coverpic/cover-8.png") center / cover no-repeat;
            border-radius: var(--radius-lg);
            padding: clamp(26px, 5vw, 70px);
            margin-top: 38px;
            border: 1px solid rgba(255, 255, 255, 0.1);
        }

        .path-steps {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .path-step {
            background: rgba(7, 12, 23, 0.56);
            border: 1px solid rgba(255, 255, 255, 0.13);
            border-radius: var(--radius-md);
            backdrop-filter: blur(10px);
            padding: 22px 18px;
        }

        .path-step strong {
            display: block;
            color: #fff;
            font-size: 1rem;
            margin-bottom: 7px;
        }

        .path-step span {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        .faq-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 18px 30px;
            align-items: start;
        }

        details.faq-card {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.09);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: background 0.25s ease, border-color 0.25s ease;
        }

        details.faq-card:hover {
            background: rgba(255, 255, 255, 0.055);
            border-color: rgba(255, 255, 255, 0.18);
        }

        details.faq-card[open] {
            background: rgba(17, 30, 51, 0.6);
            border-color: rgba(255, 255, 255, 0.18);
        }

        .faq-summary {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            list-style: none;
            padding: 20px 24px;
            cursor: pointer;
            font-weight: 600;
            color: var(--text-primary);
            font-size: 1rem;
            user-select: none;
        }

        .faq-summary::-webkit-details-marker {
            display: none;
        }

        .faq-summary::after {
            content: "";
            min-width: 18px;
            height: 18px;
            border-radius: 50%;
            background: rgba(0, 224, 184, 0.12);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: var(--brand-cyan);
            font-size: 1rem;
            box-shadow: inset 0 0 0 1px rgba(0, 224, 184, 0.25);
            line-height: 1;
        }

        details[open] .faq-summary::after {
            background: var(--brand-cyan);
            color: #07131c;
            box-shadow: 0 0 12px rgba(0, 224, 184, 0.4);
        }

        .faq-body {
            padding: 0 24px 22px;
            color: var(--text-secondary);
            font-size: 0.92rem;
            line-height: 1.72;
        }

        .cta-panel {
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
            gap: 24px;
            border-radius: clamp(18px, 3vw, 30px);
            padding: clamp(40px, 6vw, 76px) clamp(22px, 5vw, 60px);
            background: linear-gradient(rgba(7, 12, 23, 0.82), rgba(7, 12, 23, 0.68)), url("/assets/images/backpic/back-3.png") center / cover no-repeat;
            border: 1px solid rgba(255, 255, 255, 0.14);
            box-shadow: var(--shadow-hover);
            overflow: hidden;
        }

        .cta-panel h2 {
            max-width: 760px;
            margin-bottom: 0;
        }

        .cta-panel p {
            max-width: 640px;
            font-size: 1.02rem;
        }

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

        .footer {
            background: #060A12;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 70px 0 0px;
            box-shadow: 0 -12px 30px rgba(0, 0, 0, 0.24);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.3fr;
            gap: 48px 36px;
            padding-bottom: 42px;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }

        .footer-brand .brand-tag {
            margin-left: 0;
        }

        .footer-sub {
            color: var(--text-muted);
            font-size: 0.92rem;
            line-height: 1.7;
            max-width: 285px;
        }

        .footer-title {
            color: #fff;
            font-size: 0.96rem;
            font-weight: 600;
            margin-bottom: 16px;
        }

        .footer-link {
            display: block;
            color: var(--text-secondary);
            font-size: 0.9rem;
            padding: 5px 0;
            transition: color 0.2s ease, padding-left 0.2s ease;
        }

        .footer-link:hover {
            color: var(--brand-cyan);
            padding-left: 4px;
        }

        .footer-news .news-item {
            display: block;
            color: var(--text-secondary);
            font-size: 0.88rem;
            padding: 6px 0;
            line-height: 1.5;
            transition: color 0.2s ease;
        }

        .footer-news .news-item:hover {
            color: var(--brand-cyan);
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            gap: 18px;
            align-items: center;
            padding: 22px 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            color: var(--text-muted);
            font-size: 0.8rem;
        }

        .footer-social {
            display: flex;
            gap: 10px;
        }

        .footer-social a {
            width: 32px;
            height: 32px;
            border-radius: 9px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(255, 255, 255, 0.05);
            color: var(--text-muted);
            transition: color 0.2s ease, background 0.2s ease, border-color 0.2s ease;
            border: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-social a:hover {
            color: var(--brand-cyan);
            background: rgba(0, 224, 184, 0.1);
            border-color: rgba(0, 224, 184, 0.25);
        }

        @media (min-width: 1024px) {
            .header-inner {
                max-width: 1200px;
                margin: 0 auto;
            }
        }

        @media (max-width: 1023.5px) {
            .section {
                padding: 64px 0;
            }

            .split-wrap {
                grid-template-columns: 1fr;
                gap: 30px;
            }

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

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

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

            .header-inner {
                max-width: 760px;
                margin: auto;
            }

            .nav-mobile {
                display: inline-flex;
                align-items: center;
                justify-content: center;
                background: transparent;
                width: 42px;
                height: 42px;
                margin-left: auto;
                border-radius: 12px;
            }

            .nav-mobile > span {
                width: 22px;
                height: 2px;
                background: #fff;
                display: block;
                border-radius: 2px;
            }

            .nav-mobile::before,
            .nav-mobile::after {
                content: "";
                display: block;
                width: 22px;
                height: 2px;
                background: #fff;
                border-radius: 2px;
                margin: 5px 0;
            }

            .nav-wrap {
                position: fixed;
                top: 72px;
                right: 0;
                width: min(86vw, 340px);
                height: calc(100vh - 72px);
                background: rgba(7, 12, 23, 0.97);
                backdrop-filter: blur(18px);
                -webkit-backdrop-filter: blur(18px);
                flex-direction: column;
                align-items: stretch;
                padding: 24px 20px 30px;
                border-left: 1px solid rgba(255, 255, 255, 0.12);
                transform: translateX(100%);
                visibility: hidden;
                transition: transform 0.28s ease, visibility 0.28s ease;
                display: flex;
                overflow-y: auto;
                z-index: 1001;
            }

            body.nav-open .nav-wrap {
                transform: translateX(0);
                visibility: visible;
            }

            .nav-container {
                display: contents;
            }

            .main-nav {
                flex-direction: column;
                gap: 4px;
                margin-bottom: 16px;
                width: 100%;
            }

            .main-nav .nav-link {
                color: var(--text-secondary);
                padding: 14px 12px;
                font-size: 1rem;
            }

            .main-nav .nav-link:hover,
            .main-nav .nav-link.active {
                color: #fff;
                background: rgba(255, 255, 255, 0.06);
            }

            .main-nav .nav-link.active::after {
                display: none;
            }

            .nav-cta {
                margin-left: 0;
                width: 100%;
                height: 46px;
            }
        }

        @media (max-width: 767.5px) {
            .section {
                padding: 48px 0;
            }

            .section-head {
                margin-bottom: 30px;
            }

            .hero {
                padding: 130px 0 50px;
                min-height: auto;
            }

            .hero h1 {
                font-size: 1.75rem;
            }

            .hero-desc {
                font-size: 0.95rem;
                margin-bottom: 26px;
            }

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

            .hero-actions .btn {
                width: 100%;
                max-width: 280px;
            }

            .hero-stats {
                grid-template-columns: 1fr;
                gap: 16px;
                padding: 20px;
                margin-top: 40px;
            }

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

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

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

            .faq-list {
                grid-template-columns: 1fr;
            }

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

            .entry-path {
                margin-top: 20px;
            }

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

            .cta-actions .btn {
                width: 100%;
                max-width: 260px;
            }
        }

        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
                padding-bottom: 28px;
            }

            .footer-sub {
                max-width: 100%;
            }

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

        @media (prefers-reduced-motion: reduce) {
            html {
                scroll-behavior: auto;
            }

            * {
                transition: none !important;
                animation: none !important;
            }
        }

/* roulang page: category4 */
:root {
            --bg-base: #070C17;
            --bg-panel: #0C1524;
            --bg-elevated: #111E33;
            --text-primary: #EAF1FB;
            --text-secondary: rgba(234, 241, 251, 0.68);
            --text-muted: rgba(234, 241, 251, 0.42);
            --line-subtle: rgba(255, 255, 255, 0.08);
            --line-strong: rgba(255, 255, 255, 0.16);
            --glass-bg: rgba(255, 255, 255, 0.055);
            --glass-border: rgba(255, 255, 255, 0.12);
            --brand-primary: #3B82FF;
            --brand-cyan: #00E0B8;
            --brand-glow: rgba(0, 224, 184, 0.38);
            --success: #22C58B;
            --warning: #F5A623;
            --danger: #FF5C7A;
            --radius-card: 18px;
            --radius-lg: 12px;
            --radius-sm: 8px;
            --font-sans: -apple-system, "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", sans-serif;
            --grad-primary: linear-gradient(135deg, #3B82FF 0%, #00E0B8 100%);
            --grad-cyan: linear-gradient(135deg, #00A6FF 0%, #00E0B8 100%);
            --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.22);
            --shadow-glass: 0 20px 50px rgba(0, 0, 0, 0.3);
            --shadow-glow: 0 0 0 1px rgba(0, 224, 184, 0.28), 0 8px 30px rgba(0, 224, 184, 0.28);
            --section-space: 96px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-sans);
            background: var(--bg-base);
            background-image: radial-gradient(circle at 78% -10%, rgba(0, 224, 184, 0.08), transparent 36%), radial-gradient(circle at 12% 22%, rgba(59, 130, 255, 0.1), transparent 28%);
            color: var(--text-primary);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            font-size: 1rem;
        }

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

        a {
            color: inherit;
            text-decoration: none;
        }

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

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

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

        .section-head {
            max-width: 840px;
            margin: 0 auto 52px;
            text-align: center;
        }

        .section-head.left {
            text-align: left;
            margin-left: 0;
        }

        .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            padding: 4px 13px;
            border: 1px solid rgba(0, 224, 184, 0.28);
            background: rgba(0, 224, 184, 0.08);
            color: var(--brand-cyan);
            font-size: 0.85rem;
            border-radius: 999px;
            letter-spacing: 0.03em;
            margin-bottom: 18px;
            font-weight: 500;
        }

        .eyebrow::before {
            content: "";
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--brand-cyan);
            box-shadow: 0 0 10px var(--brand-cyan);
        }

        h1,
        h2,
        h3,
        h4 {
            color: var(--text-primary);
            line-height: 1.3;
            font-weight: 650;
        }

        h1 {
            font-size: clamp(2rem, 4.4vw, 3.5rem);
            line-height: 1.16;
            letter-spacing: -0.01em;
        }

        h2 {
            font-size: clamp(1.65rem, 2.6vw, 2.25rem);
            line-height: 1.25;
            letter-spacing: -0.01em;
        }

        h3 {
            font-size: clamp(1.15rem, 1.6vw, 1.35rem);
            line-height: 1.4;
            font-weight: 600;
        }

        p {
            color: var(--text-secondary);
        }

        .lead {
            font-size: 1.125rem;
            color: var(--text-secondary);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 48px;
            padding: 0 26px;
            border: 0;
            border-radius: var(--radius-lg);
            font-size: 15px;
            font-weight: 600;
            white-space: nowrap;
            cursor: pointer;
            transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, border-color 0.2s ease, color 0.2s ease;
        }

        .btn-primary {
            background: var(--grad-primary);
            color: #08131c;
            box-shadow: 0 0 0 1px rgba(0, 224, 184, 0.2), 0 8px 30px rgba(0, 224, 184, 0.22);
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 0 0 1px rgba(0, 224, 184, 0.34), 0 12px 36px rgba(0, 224, 184, 0.32);
        }

        .btn-ghost {
            background: rgba(255, 255, 255, 0.05);
            color: rgba(234, 241, 251, 0.88);
            border: 1px solid rgba(255, 255, 255, 0.15);
        }

        .btn-ghost:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(255, 255, 255, 0.28);
            transform: translateY(-2px);
        }

        .btn-sm {
            height: 40px;
            padding: 0 18px;
            font-size: 14px;
            border-radius: 10px;
        }

        .btn:active {
            transform: translateY(0);
        }

        .btn:focus-visible,
        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--brand-cyan);
            outline-offset: 3px;
        }

        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 100;
            height: 72px;
            display: flex;
            align-items: center;
            background: rgba(7, 12, 22, 0.32);
            border-bottom: 1px solid rgba(255, 255, 255, 0.07);
            transition: background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
            backdrop-filter: blur(18px) saturate(150%);
            -webkit-backdrop-filter: blur(18px) saturate(150%);
        }

        .site-header.scrolled {
            background: rgba(7, 12, 22, 0.9);
            border-color: rgba(255, 255, 255, 0.09);
            box-shadow: 0 10px 34px rgba(0, 0, 0, 0.36);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 28px;
            width: 100%;
        }

        .logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .brand-mark {
            width: 38px;
            height: 38px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 12px;
            color: var(--brand-cyan);
            background: rgba(0, 224, 184, 0.1);
            border: 1px solid rgba(0, 224, 184, 0.26);
        }

        .brand-name {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            letter-spacing: -0.01em;
        }

        .brand-tag {
            padding: 3px 9px;
            margin-left: 3px;
            font-size: 12px;
            font-weight: 600;
            color: var(--brand-cyan);
            border-radius: 999px;
            background: rgba(0, 224, 184, 0.12);
            border: 1px solid rgba(0, 224, 184, 0.22);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            margin-left: auto;
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            position: relative;
            padding: 9px 13px;
            font-size: 15px;
            color: var(--text-secondary);
            border-radius: 8px;
            transition: color 0.2s ease, background 0.2s ease;
        }

        .nav-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.05);
        }

        .nav-link.active {
            color: #fff;
        }

        .nav-link.active::after {
            content: "";
            position: absolute;
            left: 16px;
            right: 16px;
            bottom: 1px;
            height: 2px;
            background: var(--brand-cyan);
            border-radius: 2px;
            box-shadow: 0 0 12px rgba(0, 224, 184, 0.6);
        }

        .nav-cta {
            height: 38px;
            padding: 0 18px;
            margin-left: 8px;
            font-size: 14px;
            border-radius: 10px;
            flex-shrink: 0;
        }

        .nav-toggle {
            display: none;
            width: 42px;
            height: 42px;
            align-items: center;
            justify-content: center;
            background: rgba(255, 255, 255, 0.07);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 10px;
            color: #fff;
            cursor: pointer;
        }

        .page-banner {
            position: relative;
            padding: 172px 0 80px;
            min-height: 68vh;
            display: flex;
            align-items: center;
            background: linear-gradient(180deg, rgba(5, 9, 18, 0.9) 0%, rgba(7, 13, 23, 0.94) 60%, #070C17 100%), url("/assets/images/backpic/back-1.webp") center/cover no-repeat;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 26px;
        }

        .breadcrumb a {
            color: var(--text-secondary);
            transition: color 0.2s ease;
        }

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

        .breadcrumb .sep {
            color: rgba(234, 241, 251, 0.3);
        }

        .banner-inner {
            max-width: 820px;
        }

        .banner-inner h1 {
            margin: 14px 0 20px;
            font-size: clamp(2rem, 4.6vw, 3.6rem);
        }

        .banner-inner .lead {
            max-width: 680px;
            font-size: 1.125rem;
            line-height: 1.85;
            margin-bottom: 34px;
        }

        .banner-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-bottom: 52px;
        }

        .safe-metrics {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 0;
            border: 1px solid rgba(255, 255, 255, 0.09);
            background: rgba(255, 255, 255, 0.04);
            border-radius: 18px;
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            overflow: hidden;
        }

        .safe-metric {
            padding: 20px 22px;
        }

        .safe-metric + .safe-metric {
            border-left: 1px solid rgba(255, 255, 255, 0.07);
        }

        .safe-metric strong {
            display: block;
            font-size: 1rem;
            color: #fff;
            font-weight: 600;
            margin-bottom: 6px;
        }

        .safe-metric span {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.5;
            display: block;
        }

        .section-risk {
            background: #0A111D;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

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

        .risk-card {
            background: rgba(255, 255, 255, 0.045);
            border: 1px solid rgba(245, 166, 35, 0.16);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            position: relative;
            transition: background 0.22s ease, border-color 0.22s ease, transform 0.22s ease, box-shadow 0.22s ease;
        }

        .risk-card:hover {
            transform: translateY(-4px);
            background: rgba(255, 255, 255, 0.07);
            border-color: rgba(245, 166, 35, 0.38);
            box-shadow: 0 18px 34px rgba(0, 0, 0, 0.28);
        }

        .risk-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border-radius: 12px;
            margin-bottom: 18px;
            color: var(--warning);
            background: rgba(245, 166, 35, 0.1);
            border: 1px solid rgba(245, 166, 35, 0.22);
        }

        .risk-card h3 {
            font-size: 1.05rem;
            margin-bottom: 10px;
        }

        .risk-card p {
            font-size: 0.92rem;
            line-height: 1.7;
            color: var(--text-secondary);
        }

        .features-section {
            background: radial-gradient(circle at 90% 15%, rgba(0, 224, 184, 0.06), transparent 30%), var(--bg-base);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

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

        .feature-card {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            padding: 28px;
            box-shadow: var(--shadow-card);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            transition: transform 0.22s ease, background 0.22s ease, border-color 0.22s ease, box-shadow 0.22s ease;
        }

        .feature-card:hover {
            transform: translateY(-4px);
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(255, 255, 255, 0.2);
            box-shadow: var(--shadow-glass);
        }

        .feature-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 46px;
            height: 46px;
            border-radius: 14px;
            background: rgba(0, 224, 184, 0.1);
            color: var(--brand-cyan);
            border: 1px solid rgba(0, 224, 184, 0.2);
            margin-bottom: 20px;
            box-shadow: 0 0 16px rgba(0, 224, 184, 0.12);
        }

        .feature-card h3 {
            font-size: 1.08rem;
            margin-bottom: 12px;
        }

        .feature-card p {
            font-size: 0.92rem;
            line-height: 1.72;
            color: var(--text-secondary);
        }

        .feature-link {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            margin-top: 16px;
            font-size: 0.9rem;
            color: var(--brand-cyan);
            font-weight: 500;
        }

        .feature-link svg {
            transition: transform 0.2s ease;
        }

        .feature-link:hover svg {
            transform: translateX(4px);
        }

        .flow-section {
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .flow-layout {
            display: grid;
            grid-template-columns: 0.92fr 1.08fr;
            gap: 60px;
            align-items: center;
        }

        .flow-visual {
            position: relative;
        }

        .flow-visual .cover-frame {
            position: relative;
            border-radius: 24px;
            overflow: hidden;
            border: 1px solid rgba(255, 255, 255, 0.1);
            box-shadow: 0 24px 50px rgba(0, 0, 0, 0.38);
        }

        .flow-visual .cover-frame img {
            width: 100%;
            height: 440px;
            object-fit: cover;
        }

        .flow-visual::after {
            content: "";
            position: absolute;
            inset: 18px -14px -14px 18px;
            border: 1px solid rgba(0, 224, 184, 0.14);
            border-radius: 26px;
            z-index: -1;
        }

        .flow-list {
            display: flex;
            flex-direction: column;
            gap: 28px;
        }

        .flow-step {
            display: flex;
            gap: 20px;
            align-items: flex-start;
            padding: 24px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 16px;
            transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease;
        }

        .flow-step:hover {
            transform: translateY(-3px);
            background: rgba(255, 255, 255, 0.065);
            border-color: rgba(255, 255, 255, 0.17);
        }

        .step-num {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--brand-cyan);
            border-radius: 14px;
            background: rgba(0, 224, 184, 0.1);
            border: 1px solid rgba(0, 224, 184, 0.22);
        }

        .flow-step h3 {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.1rem;
            margin-bottom: 6px;
        }

        .flow-step p {
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        .tips-section {
            background: #0A111D;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .tips-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px 24px;
        }

        .tip-card {
            display: flex;
            gap: 16px;
            align-items: flex-start;
            padding: 22px 24px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.09);
            border-radius: 16px;
            transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease;
        }

        .tip-card:hover {
            transform: translateY(-3px);
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(255, 255, 255, 0.18);
        }

        .tip-card svg {
            flex-shrink: 0;
            width: 21px;
            height: 21px;
            margin-top: 2px;
            color: var(--brand-cyan);
        }

        .tip-card strong {
            display: block;
            color: #fff;
            font-size: 1rem;
            margin-bottom: 5px;
            font-weight: 600;
        }

        .tip-card span {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        .faq-section {
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .faq-list {
            columns: 2;
            column-gap: 28px;
            max-width: 1080px;
            margin: 0 auto;
        }

        .faq-item {
            display: inline-block;
            width: 100%;
            break-inside: avoid;
            margin-bottom: 24px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.09);
            border-radius: 16px;
            overflow: hidden;
            transition: border-color 0.22s ease, background 0.22s ease;
        }

        .faq-item.active {
            border-color: rgba(0, 224, 184, 0.26);
            background: rgba(255, 255, 255, 0.065);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 18px;
            background: transparent;
            border: 0;
            text-align: left;
            color: #fff;
            padding: 20px 22px;
            font-size: 1.02rem;
            font-weight: 600;
            cursor: pointer;
            line-height: 1.5;
        }

        .faq-question .q-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 8px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: rgba(0, 224, 184, 0.1);
            color: var(--brand-cyan);
            font-size: 1.3rem;
            font-weight: 400;
            transition: transform 0.25s ease, background 0.25s ease, color 0.25s ease;
        }

        .faq-item.active .q-icon {
            transform: rotate(45deg);
            background: rgba(0, 224, 184, 0.55);
            color: #06131c;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
        }

        .faq-answer-inner {
            padding: 0 22px 22px;
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.8;
        }

        .cta-section {
            padding: 96px 0;
            position: relative;
            background: linear-gradient(180deg, rgba(7, 12, 23, 0.92), rgba(7, 12, 23, 0.96)), url("/assets/images/backpic/back-3.png") center/cover no-repeat;
        }

        .cta-panel {
            position: relative;
            text-align: center;
            max-width: 920px;
            margin: 0 auto;
            padding: 56px 48px;
            border: 1px solid rgba(255, 255, 255, 0.12);
            background: rgba(255, 255, 255, 0.05);
            border-radius: 26px;
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            overflow: hidden;
            box-shadow: var(--shadow-glass);
        }

        .cta-panel::before {
            content: "";
            position: absolute;
            width: 320px;
            height: 320px;
            background: radial-gradient(circle, rgba(0, 224, 184, 0.18), transparent 70%);
            top: -130px;
            right: -100px;
            pointer-events: none;
        }

        .cta-panel h2 {
            font-size: clamp(1.7rem, 2.8vw, 2.3rem);
            margin-bottom: 16px;
        }

        .cta-panel p {
            max-width: 620px;
            margin: 0 auto 30px;
            font-size: 1.02rem;
        }

        .cta-note {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 14px;
            margin-top: 22px;
        }

        .cta-note span {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        .footer {
            background: #04080F;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 72px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1.1fr 1.3fr;
            gap: 36px;
            padding-bottom: 48px;
        }

        .footer-brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }

        .footer-brand .brand-mark {
            width: 34px;
            height: 34px;
            border-radius: 10px;
        }

        .footer-brand .brand-name {
            font-size: 19px;
        }

        .footer-about p {
            margin-bottom: 12px;
            font-size: 0.92rem;
            color: var(--text-muted);
            max-width: 300px;
            line-height: 1.75;
        }

        .footer-title {
            font-size: 0.98rem;
            margin-bottom: 18px;
            color: #fff;
        }

        .footer-link {
            display: flex;
            align-items: center;
            margin-bottom: 11px;
            font-size: 0.9rem;
            color: var(--text-secondary);
            transition: color 0.2s ease;
        }

        .footer-link:hover {
            color: var(--brand-cyan);
        }

        .footer-news-item {
            display: block;
            margin-bottom: 12px;
            font-size: 0.9rem;
            color: rgba(234, 241, 251, 0.66);
            transition: color 0.2s ease;
            line-height: 1.55;
        }

        .footer-news-item:hover {
            color: var(--brand-cyan);
        }

        .footer-news-item time {
            display: block;
            font-size: 0.78rem;
            color: var(--text-muted);
            margin-top: 2px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 20px 0;
            text-align: center;
        }

        .footer-bottom p {
            font-size: 0.83rem;
            color: var(--text-muted);
        }

        @media (max-width: 1023px) {
            :root {
                --section-space: 72px;
            }

            .safe-metric {
                padding: 16px;
            }

            .safe-metric span {
                font-size: 0.8rem;
            }

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

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

            .flow-layout {
                grid-template-columns: 1fr;
                gap: 42px;
            }

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

            .footer-about {
                grid-column: span 2;
            }
        }

        @media (max-width: 767px) {
            :root {
                --section-space: 48px;
            }

            .nav-toggle {
                display: inline-flex;
            }

            .main-nav {
                position: fixed;
                top: 0;
                right: -100%;
                width: min(82%, 360px);
                height: 100vh;
                flex-direction: column;
                align-items: stretch;
                background: rgba(7, 13, 23, 0.98);
                backdrop-filter: blur(24px);
                -webkit-backdrop-filter: blur(24px);
                border-left: 1px solid rgba(255, 255, 255, 0.08);
                padding: 96px 24px 30px;
                z-index: 99;
                box-shadow: -20px 0 50px rgba(0, 0, 0, 0.48);
                transition: right 0.3s ease;
                margin-left: 0;
            }

            .main-nav.open {
                right: 0;
            }

            .main-nav .nav-link {
                width: 100%;
                justify-content: flex-start;
                padding: 13px 14px;
                font-size: 1.06rem;
            }

            .nav-link.active::after {
                left: 14px;
                right: auto;
                width: 34px;
                bottom: 5px;
            }

            .nav-cta {
                width: 100%;
                margin: 18px 0 0;
                height: 46px;
            }

            .nav-close-overlay {
                display: none;
            }

            .page-banner {
                padding: 132px 0 54px;
                min-height: auto;
            }

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

            .safe-metric:nth-child(3) {
                border-left: 0;
                border-top: 1px solid rgba(255, 255, 255, 0.07);
            }

            .safe-metric:nth-child(4) {
                border-top: 1px solid rgba(255, 255, 255, 0.07);
            }

            .banner-actions {
                flex-direction: column;
                align-items: stretch;
            }

            .banner-actions .btn {
                width: 100%;
            }

            .risk-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .features-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .tips-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .faq-list {
                columns: 1;
            }

            .flow-visual .cover-frame img {
                height: 260px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }

            .footer-about {
                grid-column: auto;
            }

            .cta-panel {
                padding: 34px 22px;
                border-radius: 20px;
            }

            .cta-panel .btn {
                width: 100%;
            }

            .cta-note {
                flex-direction: column;
                align-items: center;
                gap: 8px;
            }

            h1 {
                font-size: clamp(1.8rem, 5.6vw, 2.5rem);
            }

            .lead {
                font-size: 1rem;
            }
        }

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

            .brand-name {
                font-size: 17px;
            }

            .brand-tag {
                font-size: 11px;
                padding: 2px 7px;
            }

            .safe-metric {
                padding: 14px 12px;
            }

            .safe-metric span {
                font-size: 0.75rem;
            }

            .flow-step {
                padding: 18px;
                flex-direction: column;
                gap: 12px;
            }
        }

        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation: none !important;
                transition: none !important;
            }

            html {
                scroll-behavior: auto;
            }
        }