/* roulang page: index */
:root{
        --bg-deep:#0b0a12;
        --bg-body:#0e0d16;
        --bg-card:#15141f;
        --bg-soft:#1a1926;
        --bg-elev:#211f30;
        --neon-purple:#8a6cf0;
        --neon-aqua:#5ad1e8;
        --neon-glow:rgba(90,209,232,.35);
        --neon-purple-glow:rgba(138,108,240,.32);
        --star-warm:#f4c77d;
        --star-warm-2:#eab65f;
        --text-hi:#ecf0fa;
        --text-body:#b9c0d4;
        --text-mute:#858ca6;
        --line:rgba(255,255,255,.07);
        --line-strong:rgba(255,255,255,.12);
        --radius-lg:24px;
        --radius-md:18px;
        --radius-sm:12px;
        --radius-pill:999px;
        --shadow-card:0 18px 40px rgba(0,0,0,.35);
        --shadow-glow:0 0 40px rgba(90,209,232,.14), 0 18px 34px rgba(0,0,0,.45);
        --font-sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC","Segoe UI",sans-serif;
        --trans:all .3s cubic-bezier(.25,.8,.25,1);
        --space-sec:clamp(64px,8vw,110px);
    }
    *,*::before,*::after{box-sizing:border-box}
    body{
        margin:0;background:var(--bg-body);color:var(--text-body);
        font-family:var(--font-sans);line-height:1.7;
        -webkit-font-smoothing:antialiased;
        overflow-x:hidden;
    }
    body.modal-open, body.nav-open{overflow:hidden}
    a{color:inherit;text-decoration:none;transition:var(--trans)}
    img{max-width:100%;height:auto;display:block}
    button,input,textarea{font-family:inherit}
    a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{
        outline:3px solid var(--neon-aqua);outline-offset:3px;border-radius:6px;
    }
    .container-x{max-width:1340px;margin-left:auto;margin-right:auto;padding-left:24px;padding-right:24px}
    @media(max-width:576px){.container-x{padding-left:20px;padding-right:20px}}
    .text-glow{color:var(--text-hi)}
    .text-aqua{color:var(--neon-aqua)}
    .text-purple{color:#a48cf5}
    .text-warm{color:var(--star-warm)}
    .text-muted-2{color:var(--text-mute)}
    .bg-soft-block{background:linear-gradient(180deg,rgba(138,108,240,.06),rgba(90,209,232,.02))}
    .section{padding:var(--space-sec) 0;position:relative}
    .section-tight{padding:48px 0}
    .divider-line{height:1px;border:0;background:linear-gradient(90deg,transparent,var(--line-strong),transparent);margin:0}
    .overline{
        display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:3px;
        text-transform:uppercase;color:var(--neon-aqua);font-weight:600;margin-bottom:14px;
    }
    .overline::before{content:"";width:20px;height:1px;background:var(--neon-aqua);opacity:.7}
    .section-title{
        font-size:clamp(1.7rem,3.2vw,2.55rem);color:var(--text-hi);font-weight:700;
        letter-spacing:.5px;line-height:1.25;margin-bottom:14px;
    }
    .section-sub{font-size:15px;color:var(--text-mute);max-width:680px}
    @media(max-width:768px){.section-sub{font-size:14px}}

    /* navbar */
    .site-nav{
        background:rgba(10,9,18,.88);
        backdrop-filter:blur(12px);
        -webkit-backdrop-filter:blur(12px);
        border-bottom:1px solid transparent;
        transition:var(--trans);
        z-index:1080;
    }
    .site-nav.is-scrolled{
        background:rgba(8,7,15,.96);
        border-bottom-color:var(--line);
        box-shadow:0 8px 40px rgba(0,0,0,.45);
    }
    .site-nav .navbar-brand{
        display:inline-flex;align-items:center;gap:10px;padding:12px 0;margin:0;
        font-weight:800;font-size:1.25rem;color:var(--text-hi);letter-spacing:1px;
    }
    .brand-mark{
        width:34px;height:34px;flex:0 0 34px;border-radius:12px;
        background:conic-gradient(from 210deg,rgba(138,108,240,.9),rgba(90,209,232,.6),rgba(138,108,240,.7));
        display:inline-flex;align-items:center;justify-content:center;
        font-size:15px;color:#0a0912;box-shadow:0 0 16px rgba(138,108,240,.4);
    }
    .site-nav .nav-link{
        color:var(--text-body);font-weight:500;padding:8px 14px !important;font-size:15px;
        border-radius:10px;position:relative;white-space:nowrap;
    }
    .site-nav .nav-link:hover{color:var(--text-hi)}
    .site-nav .nav-link.active{
        color:#fff;
    }
    .site-nav .nav-link.active::after{
        content:"";position:absolute;left:14px;right:14px;bottom:0;height:2px;
        background:linear-gradient(90deg,var(--neon-purple),var(--neon-aqua));
        border-radius:4px;box-shadow:0 0 12px var(--neon-glow);
    }
    .nav-cta-btn{
        background:linear-gradient(90deg,#7d5cf0,#4cc6dd);color:#0c0b12 !important;
        font-weight:700;padding:8px 20px;border-radius:var(--radius-pill);
        font-size:14px;border:0;letter-spacing:.2px;transition:var(--trans);
        box-shadow:0 0 16px rgba(90,209,232,.18);white-space:nowrap;
    }
    .nav-cta-btn:hover{
        color:#0c0b12 !important;transform:translateY(-2px);
        box-shadow:0 8px 24px rgba(90,209,232,.3);
    }
    .nav-cta-btn i{margin-right:6px;font-size:12px}
    .nav-icons{width:42px;height:42px;border-radius:14px;color:var(--text-body);border:1px solid var(--line-strong);background:rgba(255,255,255,.03);display:inline-flex;align-items:center;justify-content:center}
    .navbar-toggler{border:1px solid var(--line-strong);border-radius:12px;color:var(--text-hi);background:transparent}
    .navbar-toggler:focus{box-shadow:0 0 0 3px rgba(90,209,232,.25);outline:none}
    @media(max-width:991.98px){
        .navbar-collapse{
            background:rgba(13,12,21,.98);border:1px solid var(--line);padding:16px;margin-top:12px;
            border-radius:20px;box-shadow:0 20px 60px rgba(0,0,0,.5);
            max-height:min(70vh,600px);overflow-y:auto;
        }
        .site-nav .nav-link{padding:12px 16px !important;font-size:16px}
        .site-nav .nav-link.active{background:linear-gradient(90deg,rgba(138,108,240,.25),rgba(90,209,232,.16))}
        .site-nav .nav-link.active::after{display:none}
        .nav-cta-wrapper{margin-top:12px}
        .nav-cta-btn{width:100%;justify-content:center}
    }

    /* hero */
    .hero-section{
        min-height:92vh;display:flex;align-items:center;position:relative;
        overflow:hidden;padding:120px 0 70px;background-color:#0a0810;
        background-image:url('/assets/images/backpic/back-1.png');
        background-size:cover;background-position:center;
    }
    .hero-section::before{
        content:"";position:absolute;inset:0;z-index:1;
        background:linear-gradient(90deg,rgba(7,6,14,.88) 0%,rgba(8,7,18,.72) 42%,rgba(8,7,16,.4) 100%);
    }
    .hero-section::after{
        content:"";position:absolute;inset:0;z-index:1;
        background:radial-gradient(ellipse at 75% 40%,rgba(138,108,240,.16),transparent 56%);
    }
    .hero-inner{position:relative;z-index:3;width:100%}
    .hero-badge{
        display:inline-flex;align-items:center;gap:10px;padding:7px 16px;
        background:rgba(12,10,20,.6);border:1px solid rgba(255,255,255,.12);
        border-radius:var(--radius-pill);color:var(--text-hi);font-size:13px;font-weight:500;
        margin-bottom:26px;
    }
    .hero-badge i{color:var(--star-warm)}
    .hero-h1{
        font-size:clamp(2.3rem,5.6vw,3.4rem);font-weight:800;color:#f2f5ff;line-height:1.2;
        letter-spacing:1px;margin-bottom:22px;max-width:840px;text-shadow:0 2px 24px rgba(0,0,0,.3);
    }
    .hero-h1 .grad-text{
        background:linear-gradient(90deg,#b9a5ff,#78ebf5 70%);
        -webkit-background-clip:text;background-clip:text;color:transparent;
    }
    .hero-sub{
        font-size:clamp(1rem,1.4vw,1.12rem);color:#cfd4e6;margin-bottom:32px;
        max-width:650px;line-height:1.8;
    }
    .hero-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center;margin-bottom:38px}
    .btn-nova{
        padding:13px 30px;border-radius:var(--radius-pill);font-weight:600;font-size:15px;
        border:0;cursor:pointer;transition:var(--trans);display:inline-flex;align-items:center;gap:9px;
    }
    .btn-nova.btn-primary-n{
        background:linear-gradient(90deg,#8a63ff,#42c9e6);color:#0b0a12;box-shadow:0 6px 22px rgba(138,108,240,.3);
    }
    .btn-nova.btn-primary-n:hover{transform:translateY(-3px);box-shadow:0 14px 30px rgba(138,108,240,.45)}
    .btn-nova.btn-secondary-n{
        background:rgba(15,13,24,.6);color:#dfe6ff;border:1px solid rgba(255,255,255,.2);backdrop-filter:blur(6px);
    }
    .btn-nova.btn-secondary-n:hover{border-color:var(--neon-aqua);background:rgba(90,209,232,.12);color:#fff;transform:translateY(-2px)}
    .btn-nova i{font-size:13px}
    .data-badges{display:flex;flex-wrap:wrap;gap:34px;margin-top:12px}
    .data-badge-item{display:flex;flex-direction:column;gap:6px}
    .data-badge-num{
        font-size:1.85rem;font-weight:800;color:#f5f9ff;line-height:1;font-variant-numeric:tabular-nums;
        letter-spacing:.5px;
    }
    .data-badge-num small{font-size:1rem;font-weight:700;color:var(--neon-aqua)}
    .data-badge-label{font-size:12px;color:var(--text-mute);letter-spacing:.8px;text-transform:uppercase}
    .hero-scroll-indicator{
        margin-top:54px;display:inline-flex;align-items:center;gap:10px;color:var(--text-mute);font-size:13px;
    }
    @media(max-width:768px){
        .hero-section::before{background:linear-gradient(180deg,rgba(7,6,14,.72),rgba(7,6,14,.88))}
        .hero-h1{font-size:clamp(1.9rem,8.5vw,2.5rem)}
        .hero-sub{font-size:15px}
        .data-badges{column-gap:24px;row-gap:18px}
    }

    /* universal section head */
    .sec-head{display:flex;justify-content:space-between;align-items:flex-end;gap:20px;margin-bottom:32px;flex-wrap:wrap}
    .sec-head-left h2{
        font-size:clamp(1.5rem,2.5vw,2.1rem);color:var(--text-hi);font-weight:700;letter-spacing:.5px;margin-bottom:8px;
    }
    .sec-head-left p{color:var(--text-mute);max-width:640px;font-size:15px}
    .more-link{
        color:var(--neon-aqua);font-weight:600;font-size:14px;display:inline-flex;align-items:center;gap:8px;white-space:nowrap;
        border-bottom:1px solid transparent;padding-bottom:2px;
    }
    .more-link:hover{color:#95fbff;border-bottom-color:currentColor}
    .more-link i{transition:transform .3s}
    .more-link:hover i{transform:translateX(3px)}

    /* horizontal cards rail */
    .rail-section{padding-bottom:0}
    .hscroll-rail{
        display:flex;gap:20px;overflow-x:auto;padding:6px 6px 24px;scroll-snap-type:x mandatory;
        scrollbar-width:thin;scrollbar-color:rgba(90,209,232,.3) transparent;
        margin-right:calc(var(--bs-gutter-x, 1rem) * -1);
    }
    .hscroll-rail::-webkit-scrollbar{height:5px}
    .hscroll-rail::-webkit-scrollbar-thumb{background:rgba(138,108,240,.3);border-radius:99px}
    .hscroll-rail .rail-card{
        flex:0 0 300px;scroll-snap-align:start;background:var(--bg-card);
        border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;
        transition:var(--trans);
    }
    .hscroll-rail .rail-card:hover{transform:translateY(-6px);border-color:rgba(138,108,240,.4);box-shadow:var(--shadow-glow)}
    .hs-cover{position:relative;aspect-ratio:16/9;overflow:hidden;background:linear-gradient(145deg,#1c1a2e,#292a4a)}
    .hs-cover img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
    .rail-card:hover .hs-cover img{transform:scale(1.06)}
    .hs-cover::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(0,0,0,0),rgba(6,5,15,.5))}
    .hs-cover .type-tag{
        position:absolute;left:14px;top:14px;z-index:3;padding:4px 13px;font-size:12px;font-weight:600;
        background:rgba(12,10,20,.72);backdrop-filter:blur(8px);color:#f5dca9;border:1px solid rgba(255,255,255,.1);
        border-radius:var(--radius-pill);letter-spacing:.4px;
    }
    .hs-body{padding:18px 20px 20px}
    .hs-title{color:var(--text-hi);font-weight:700;font-size:1.05rem;line-height:1.45;margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
    .hs-desc{color:var(--text-mute);font-size:13px;line-height:1.6;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:14px}
    .hs-meta{display:flex;justify-content:space-between;align-items:center}
    .hs-cat{font-size:12px;color:var(--neon-aqua);font-weight:600}
    .hs-arrow{width:30px;height:30px;border-radius:10px;background:rgba(255,255,255,.04);border:1px solid var(--line-strong);display:inline-flex;align-items:center;justify-content:center}
    @media(max-width:1200px){.hscroll-rail .rail-card{flex-basis:275px}}
    @media(max-width:992px){.hscroll-rail{padding-bottom:30px}}

    /* featured area */
    .feature-grid{display:grid;grid-template-columns:6fr 4fr;gap:24px}
    .feature-main{
        background:var(--bg-card);border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--line);
        min-height:430px;position:relative;display:flex;align-items:flex-end;padding:26px;
        background-size:cover;background-position:center;
    }
    .feature-main::before{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(5,4,12,.15) 0%,rgba(6,5,16,.72) 80%)}
    .feature-main article{position:relative;z-index:2;max-width:560px}
    .feature-main .fm-tag{
        display:inline-block;margin-bottom:12px;padding:5px 14px;font-size:12px;
        background:rgba(244,199,125,.15);border:1px solid rgba(244,199,125,.3);color:var(--star-warm);
        border-radius:99px;font-weight:600;letter-spacing:.6px;
    }
    .feature-main h3{font-size:1.45rem;color:#fff;font-weight:700;line-height:1.4;margin-bottom:10px}
    .feature-main p{color:rgba(230,235,250,.85);font-size:14px;margin-bottom:14px;max-width:480px}
    .feature-main .btn-mini{
        background:linear-gradient(90deg,#bfa9ff,#60dbe8);color:#0a0912;border:0;font-size:13px;
        padding:9px 20px;border-radius:99px;font-weight:700;display:inline-flex;align-items:center;gap:8px;
    }
    .feature-side{display:flex;flex-direction:column;gap:24px}
    .side-mini-card{
        background:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius-lg);
        display:flex;gap:18px;padding:18px;transition:var(--trans);flex:1;min-height:130px;
    }
    .side-mini-card:hover{transform:translateY(-4px);border-color:rgba(90,209,232,.35);box-shadow:var(--shadow-glow)}
    .side-mini-card .mc-icon{
        width:52px;height:52px;flex:0 0 52px;border-radius:16px;display:flex;align-items:center;justify-content:center;
        font-size:20px;border:1px solid var(--line-strong);
    }
    .side-mini-card.ic-purple .mc-icon{background:rgba(138,108,240,.18);border-color:rgba(138,108,240,.3);color:#b49dff}
    .side-mini-card.ic-aqua .mc-icon{background:rgba(90,209,232,.14);border-color:rgba(90,209,232,.3);color:#57d6ef}
    .side-mini-card.ic-warm .mc-icon{background:rgba(244,199,125,.14);border-color:rgba(244,199,125,.25);color:#ffd9a0}
    .side-mini-card .mc-body{display:flex;flex-direction:column;justify-content:center}
    .side-mini-card h4{color:var(--text-hi);font-size:1.05rem;margin-bottom:6px;font-weight:700}
    .side-mini-card p{color:var(--text-mute);font-size:13px;line-height:1.6;margin-bottom:4px}
    .side-mini-card .mc-link{color:var(--neon-aqua);font-size:13px;font-weight:600}
    @media(max-width:992px){.feature-grid{grid-template-columns:1fr}.side-mini-card{padding:16px}.feature-main{min-height:380px}}

    /* topic zones asymmetric grid */
    .topic-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr;grid-auto-rows:auto;gap:20px}
    .topic-card{
        border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--line);position:relative;
        background:var(--bg-card);transition:var(--trans);
    }
    .topic-card:hover{transform:translateY(-4px);border-color:rgba(90,209,232,.3);box-shadow:var(--shadow-glow)}
    .topic-card .topic-bg{position:absolute;inset:0;z-index:0;background-size:cover;background-position:center}
    .topic-card::after{content:"";position:absolute;inset:0;z-index:1;background:linear-gradient(180deg,rgba(10,9,18,.12),rgba(8,7,16,.92))}
    .topic-content{position:relative;z-index:3;padding:26px;display:flex;flex-direction:column;justify-content:flex-end;min-height:240px}
    .topic-card.big .topic-content{min-height:360px}
    .topic-card.mid .topic-content{min-height:245px}
    .topic-card .topic-label{
        align-self:flex-start;background:rgba(10,8,18,.6);border:1px solid rgba(255,255,255,.15);color:var(--star-warm);
        font-size:11px;padding:4px 13px;border-radius:99px;letter-spacing:1px;margin-bottom:12px;
    }
    .topic-card h3{color:#fff;font-weight:700;font-size:1.25rem;margin-bottom:6px}
    .topic-card p{color:rgba(230,235,250,.75);font-size:13.5px;margin-bottom:14px;max-width:360px}
    .topic-link{color:var(--neon-aqua);font-weight:600;font-size:13px;display:inline-flex;gap:7px;align-items:center}
    @media(max-width:1100px){.topic-grid{grid-template-columns:1fr 1fr}.topic-card.big{grid-column:1/-1}.topic-card.big .topic-content{min-height:320px}}
    @media(max-width:640px){.topic-grid{grid-template-columns:1fr}.topic-card.big .topic-content{min-height:300px}.topic-card .topic-content{min-height:230px}}

    /* news / cms list */
    .news-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
    .news-card{
        background:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius-lg);
        display:flex;gap:0;overflow:hidden;transition:var(--trans);height:100%;flex-direction:column;
    }
    @media(min-width:768px){
        .news-card{flex-direction:row}
    }
    .news-card:hover{transform:translateY(-5px);border-color:rgba(138,108,240,.32);box-shadow:var(--shadow-glow)}
    .news-cover{flex:0 0 auto;position:relative;overflow:hidden;background:#181627}
    @media(min-width:768px){.news-cover{width:46%;min-height:210px}}
    @media(max-width:767px){.news-cover{width:100%;aspect-ratio:16/9}}
    .news-cover img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
    .news-card:hover .news-cover img{transform:scale(1.04)}
    .news-cover .news-cat{
        position:absolute;left:12px;top:12px;z-index:3;background:rgba(9,7,17,.75);backdrop-filter:blur(6px);
        color:#a7f0ff;font-size:11.5px;border:1px solid rgba(90,209,232,.2);padding:4px 13px;border-radius:99px;
    }
    .news-body{padding:20px 20px;display:flex;flex-direction:column;flex:1}
    .news-date{font-size:12px;color:var(--text-mute);display:flex;align-items:center;gap:8px;margin-bottom:8px}
    .news-title{color:var(--text-hi);font-weight:700;font-size:1.06rem;line-height:1.5;margin-bottom:8px}
    .news-title a:hover{color:#9cf2ff}
    .news-excerpt{color:var(--text-mute);font-size:13.5px;line-height:1.65;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:14px}
    .news-foot{margin-top:auto;display:flex;justify-content:space-between;align-items:center}
    .news-tag{font-size:12px;color:var(--neon-aqua)}
    .news-link{color:var(--text-mute);font-size:13px}
    .news-link:hover{color:var(--star-warm)}
    .empty-news{
        grid-column:1/-1;background:linear-gradient(145deg,rgba(20,19,32,.8),rgba(14,13,23,.9));
        border:1px dashed var(--line-strong);border-radius:var(--radius-lg);padding:70px 30px;
        text-align:center;
    }
    .empty-news i{font-size:46px;color:rgba(190,180,250,.25);margin-bottom:18px}
    .empty-news p{color:var(--text-mute);font-size:16px;margin-bottom:4px}
    .empty-news p strong{color:var(--text-hi);font-weight:600}
    @media(max-width:880px){.news-grid{grid-template-columns:1fr}}

    /* event timeline card strip */
    .strip-card{
        background:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius-lg);
        transition:var(--trans);
    }
    .strip-card:hover{transform:translateY(-4px);border-color:rgba(244,199,125,.3);box-shadow:0 0 26px rgba(244,199,125,.08)}
    .strip-body{padding:22px}
    .strip-date{
        font-size:12px;letter-spacing:2px;font-weight:600;color:var(--star-warm);
        display:flex;align-items:center;gap:8px;margin-bottom:12px;
    }
    .strip-date i{opacity:.8}
    .strip-body h3{font-size:1rem;color:var(--text-hi);font-weight:700;line-height:1.5;margin-bottom:8px}
    .strip-body p{font-size:14px;color:var(--text-mute);line-height:1.65;margin-bottom:16px}
    .strip-foot{display:flex;align-items:center;justify-content:space-between}
    .strip-place{font-size:12px;color:var(--text-mute);display:flex;align-items:center;gap:6px}
    .strip-btn{
        background:transparent;border:1px solid rgba(9,8,18,.6);border-radius:99px;font-size:13px;
        background:rgba(9,8,18,.8);color:var(--text-hi);padding:7px 18px;transition:var(--trans);
    }
    .strip-btn:hover{background:linear-gradient(90deg,#8a63ff,#42c9e6);color:#0a0912;border-color:transparent;transform:translateY(-2px)}

    /* faq */
    .faq-card{
        background:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius-lg);
        margin-bottom:14px;overflow:hidden;transition:var(--trans);
    }
    .faq-card:has(.accordion-button:not(.collapsed)){
        border-color:rgba(138,108,240,.4);box-shadow:0 0 0 1px rgba(138,108,240,.12),0 16px 40px rgba(0,0,0,.25);
    }
    .faq-card .accordion-button{
        background:transparent;color:var(--text-hi);font-size:17px;font-weight:600;padding:22px 26px;
        box-shadow:none;border-bottom:1px solid transparent;border-radius:var(--radius-lg) !important;
        transition:var(--trans);display:flex;align-items:center;gap:16px;
    }
    .faq-card .accordion-button:not(.collapsed){background:rgba(138,108,240,.06)}
    .faq-card .accordion-button:hover{background:rgba(255,255,255,.02)}
    .faq-card .accordion-button::after{
        display:none;
    }
    .faq-icon{
        margin-left:auto;flex:0 0 34px;width:34px;height:34px;border-radius:12px;
        background:rgba(90,209,232,.12);color:var(--neon-aqua);display:flex;align-items:center;justify-content:center;
        font-size:14px;border:1px solid rgba(90,209,232,.18);transition:var(--trans);
    }
    .accordion-button:not(.collapsed) .faq-icon{transform:rotate(180deg);background:linear-gradient(90deg,#8a63ff,#42c9e6);color:#0b0a12;border-color:transparent}
    .faq-card .accordion-body{padding:0 26px 24px;color:var(--text-body);font-size:15px;line-height:1.9}
    .faq-card .accordion-body p{margin-bottom:10px}
    @media(max-width:600px){
        .faq-card .accordion-button{font-size:15.5px;padding:18px}
        .faq-card .accordion-body{padding:0 18px 20px}
    }

    /* cta */
    .cta-banner{
        border-radius:32px;position:relative;overflow:hidden;
        background:linear-gradient(100deg,#241e42,#0d0e1f 45%,#1b2435);
        border:1px solid rgba(138,108,240,.22);
        padding:clamp(36px,5vw,72px);
    }
    .cta-banner::before{
        content:"";position:absolute;inset:0;background:radial-gradient(circle at 90% 20%,rgba(90,209,232,.16),transparent 35%),
        radial-gradient(circle at 15% 90%,rgba(138,108,240,.2),transparent 40%);
        z-index:0;
    }
    .cta-banner .row{position:relative;z-index:2;align-items:center}
    .cta-sub-badge{display:inline-block;font-size:12px;letter-spacing:2px;color:var(--neon-aqua);margin-bottom:10px;font-weight:600}
    .cta-banner h2{color:#f4f7ff;font-size:clamp(1.9rem,3.5vw,2.7rem);font-weight:800;line-height:1.3;margin-bottom:16px}
    .cta-banner h2 .underline-aqua{border-bottom:3px solid var(--neon-aqua)}
    .cta-banner .cta-desc{color:rgba(220,226,244,.85);font-size:16px;line-height:1.8;margin-bottom:24px}
    .cta-stats{display:flex;gap:28px;margin-top:28px;flex-wrap:wrap}
    .cta-stat b{font-size:1.6rem;color:#fff;display:block;line-height:1.1;font-weight:800}
    .cta-stat span{font-size:13px;color:var(--text-mute)}
    @media(max-width:991px){.cta-stats{flex-wrap:wrap}}
    .cta-subscribe-form{display:flex;flex-direction:column;gap:12px;max-width:440px}
    .input-nova{
        width:100%;background:rgba(8,7,16,.62);border:1px solid rgba(255,255,255,.16);border-radius:18px;
        padding:15px 20px;font-size:15px;color:#fff;transition:var(--trans);
    }
    .input-nova::placeholder{color:#6b7190}
    .input-nova:focus{outline:none;border-color:var(--neon-aqua);box-shadow:0 0 0 4px rgba(90,209,232,.12),0 0 30px rgba(90,209,232,.08)}
    .cta-form-btn{
        width:100%;justify-content:center;background:linear-gradient(90deg,#dbb15f,#8a63ff);color:#0b0a12;border-radius:99px;
    }
    .privacy-note{font-size:12px;color:var(--text-mute);display:flex;align-items:center;gap:8px;justify-content:center}
    @media(min-width:992px){.privacy-note{justify-content:flex-start}}

    /* footer */
    .site-footer{background:#0a0911;border-top:1px solid var(--line);padding:70px 0 30px;margin-top:40px}
    .footer-topline{height:2px;background:linear-gradient(90deg,transparent,rgba(138,108,240,.5),rgba(90,209,232,.5),transparent)}
    .footer-brand{font-size:1.3rem;font-weight:800;color:var(--text-hi);display:inline-flex;align-items:center;gap:12px;margin-bottom:18px}
    .footer-desc{color:var(--text-mute);font-size:14px;line-height:1.9}
    .footer-title{font-size:14px;color:#c9cfeb;font-weight:700;margin-bottom:18px;letter-spacing:.5px}
    .footer-links{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:10px}
    .footer-links a{color:var(--text-mute);font-size:14px}
    .footer-links a:hover{color:var(--neon-aqua);padding-left:6px}
    .footer-social{display:flex;gap:12px;margin-top:18px}
    .footer-social a{width:40px;height:40px;border-radius:14px;background:var(--bg-card);border:1px solid var(--line-strong);display:inline-flex;align-items:center;justify-content:center;color:var(--text-mute)}
    .footer-social a:hover{color:#fff;border-color:rgba(90,209,232,.5);box-shadow:0 0 14px rgba(90,209,232,.15)}
    .footer-copyright{border-top:1px solid rgba(255,255,255,.05);padding-top:26px;margin-top:50px;display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:14px}
    .footer-copyright p{color:var(--text-mute);font-size:13px;margin:0}
    .footer-copyright a{color:#767d9c;text-decoration:underline}
    @media(max-width:768px){
        .footer-copyright{flex-direction:column;text-align:center}
    }

    @media (prefers-reduced-motion: reduce) {
        *, *::before, *::after{animation-duration:0s !important;transition-duration:0s !important;scroll-behavior:auto !important}
    }
    .reveal-hide{opacity:0;transform:translateY(28px)}
    .reveal-show{opacity:1;transform:none;transition:opacity .8s ease,transform .8s ease}

/* roulang page: category1 */
/* ============================================================
           星空网页版 · 全站设计变量
        ============================================================ */
        :root {
            --bg-deep: #0a0e17;
            --bg-body: #0d1220;
            --bg-soft: #151b2c;
            --bg-card: #121928;
            --bg-card-hover: #1a2236;
            --bg-input: #0f1420;
            --primary-purple: #7c5cbf;
            --neon-cyan: #4fd8e0;
            --star-warm: #f5c07e;
            --star-warm-soft: #e8a75f;
            --text-heading: #f2f4f8;
            --text-body: #b8c0d0;
            --text-muted: #7c8698;
            --border-light: rgba(255, 255, 255, 0.08);
            --border-glow: rgba(79, 216, 224, 0.4);
            --radius-lg: 22px;
            --radius-md: 16px;
            --radius-sm: 12px;
            --shadow-card: 0 12px 30px rgba(0, 0, 0, 0.35);
            --shadow-glow: 0 0 0 1px rgba(79, 216, 224, 0.3), 0 8px 30px rgba(124, 92, 191, 0.25);
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
            --transition: all 0.25s ease;
            --section-pad: clamp(60px, 7vw, 100px);
        }

        /* ============================================================
           基础 reset 与全局排版
        ============================================================ */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        * {
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-sans);
            background: var(--bg-body);
            color: var(--text-body);
            font-size: 16px;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

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

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

        a:hover {
            color: var(--neon-cyan);
        }

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

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

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            color: var(--text-heading);
            line-height: 1.25;
            letter-spacing: 0.01em;
        }

        h1 {
            font-size: clamp(2rem, 4vw, 3rem);
        }

        h2 {
            font-size: clamp(1.65rem, 3vw, 2.4rem);
            margin-bottom: 1rem;
        }

        h3 {
            font-size: 1.2rem;
        }

        p {
            margin-bottom: 0.5rem;
        }

        .container-x {
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        @media (min-width: 1400px) {
            .container-x {
                max-width: 1360px;
            }
        }

        @media (max-width: 540px) {
            .container-x {
                padding-left: 18px;
                padding-right: 18px;
            }
        }

        /* focus 状态 */
        a:focus-visible,
        button:focus-visible,
        .form-control:focus-visible {
            outline: 2px solid var(--neon-cyan);
            outline-offset: 2px;
            box-shadow: none;
        }

        ::selection {
            background: rgba(124, 92, 191, 0.5);
            color: #fff;
        }

        /* ============================================================
           导航栏 Header
        ============================================================ */
        .site-nav {
            background: rgba(10, 14, 23, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-light);
            min-height: 68px;
            padding-top: 6px;
            padding-bottom: 6px;
            z-index: 1050;
        }

        .site-nav::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--primary-purple), var(--neon-cyan), var(--star-warm));
            opacity: 0.7;
            pointer-events: none;
        }

        .site-nav .container-x {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: nowrap;
        }

        .navbar-brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--text-heading);
            letter-spacing: .03em;
            white-space: nowrap;
        }

        .navbar-brand:hover {
            color: var(--neon-cyan);
        }

        .brand-mark {
            width: 36px;
            height: 36px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 12px;
            background: linear-gradient(135deg, rgba(124, 92, 191, 0.25), rgba(79, 216, 224, 0.2));
            color: var(--neon-cyan);
            font-size: 16px;
            border: 1px solid rgba(79, 216, 224, 0.3);
            flex-shrink: 0;
        }

        .site-nav .navbar-toggler {
            border: 1px solid var(--border-light);
            border-radius: 10px;
            padding: 6px 12px;
            color: var(--text-body);
            width: auto;
            background: rgba(255, 255, 255, 0.03);
        }

        .site-nav .navbar-toggler:hover {
            border-color: var(--neon-cyan);
            color: var(--neon-cyan);
        }

        .site-nav .navbar-toggler i {
            font-size: 20px;
        }

        .site-nav .navbar-toggler:focus {
            box-shadow: none;
        }

        .navbar-collapse {
            flex-grow: 0;
        }

        .site-nav .nav-link {
            color: var(--text-body);
            font-size: 15px;
            font-weight: 500;
            padding: 8px 16px;
            border-radius: 8px;
            position: relative;
        }

        .site-nav .nav-link::after {
            content: "";
            position: absolute;
            left: 16px;
            right: 16px;
            bottom: 2px;
            height: 2px;
            background: var(--neon-cyan);
            border-radius: 2px;
            opacity: 0;
            transition: opacity 0.2s;
        }

        .site-nav .nav-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.03);
        }

        .site-nav .nav-link:hover::after {
            opacity: 0.55;
        }

        .site-nav .nav-link.active {
            color: var(--text-heading);
            font-weight: 600;
        }

        .site-nav .nav-link.active::after {
            opacity: 1;
            box-shadow: 0 0 8px rgba(79, 216, 224, 0.6);
        }

        .site-nav .nav-link.active {
            background: rgba(124, 92, 191, 0.12);
        }

        .nav-cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
            font-weight: 600;
        }

        .btn-nova {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 600;
            line-height: 1.2;
            border-radius: 48px;
            transition: all 0.25s ease;
            cursor: pointer;
            text-align: center;
            padding: 12px 26px;
            font-size: 15px;
            border: 1px solid transparent;
        }

        .btn-primary-n {
            background: linear-gradient(135deg, #8a6bcb, #40c9d4);
            color: #0b101c;
            border: none;
            box-shadow: 0 4px 18px rgba(79, 216, 224, 0.15);
        }

        .btn-primary-n:hover {
            color: #0b101c;
            filter: brightness(1.1);
            box-shadow: 0 6px 26px rgba(79, 216, 224, 0.3);
            transform: translateY(-2px);
        }

        .btn-outline-n {
            background: rgba(10, 14, 23, 0.6);
            color: var(--neon-cyan);
            border: 1px solid rgba(79, 216, 224, 0.5);
        }

        .btn-outline-n:hover {
            background: rgba(79, 216, 224, 0.08);
            color: var(--neon-cyan);
            border-color: var(--neon-cyan);
            box-shadow: 0 0 20px rgba(79, 216, 224, 0.12);
        }

        .nav-cta-wrapper {
            border-left: 1px solid rgba(255, 255, 255, 0.07);
        }

        @media (max-width: 991.98px) {
            .site-nav .container-x {
                flex-wrap: wrap;
            }

            .navbar-collapse {
                padding-top: 12px;
                padding-bottom: 10px;
            }

            .site-nav .nav-link {
                padding-top: 10px;
                padding-bottom: 10px;
                border-radius: 10px;
            }

            .site-nav .nav-cta-wrapper {
                display: none;
            }

            .nav-cta-btn {
                margin-top: 8px;
            }
        }

        /* ============================================================
           页面 Banner / 分类页 Hero
        ============================================================ */
        .page-banner {
            position: relative;
            padding: clamp(110px, 14vw, 180px) 0 clamp(44px, 6vw, 80px);
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center 60%;
            background-repeat: no-repeat;
            isolation: isolate;
        }

        .page-banner::before {
            content: "";
            position: absolute;
            inset: 0;
            z-index: -1;
            background: linear-gradient(180deg,
                    rgba(10, 14, 23, 0.55),
                    rgba(10, 14, 23, 0.75) 55%,
                    var(--bg-body) 100%),
                radial-gradient(ellipse at 20% 40%, rgba(124, 92, 191, 0.25), transparent 60%);
        }

        .page-banner::after {
            content: "";
            position: absolute;
            inset: 0;
            z-index: -2;
            background:
                linear-gradient(to bottom, var(--bg-body), rgba(10, 14, 23, 0.7));
        }

        .page-banner-tax {
            position: relative;
            z-index: 2;
            max-width: 720px;
        }

        .tax-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(124, 92, 191, 0.18);
            border: 1px solid rgba(124, 92, 191, 0.35);
            border-radius: 48px;
            padding: 6px 16px;
            font-size: 13px;
            color: #cdbaf0;
            font-weight: 500;
            letter-spacing: 0.04em;
            margin-bottom: 20px;
        }

        .page-banner h1 {
            font-size: clamp(2.1rem, 4vw, 3.2rem);
            margin-bottom: 18px;
            line-height: 1.18;
        }

        .page-banner h1 .text-glow {
            background: linear-gradient(130deg, #e8d9ff, #7ce4ea);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .page-banner .lead-tax {
            font-size: 17px;
            line-height: 1.8;
            color: var(--text-body);
            max-width: 600px;
            margin-bottom: 30px;
        }

        .page-banner-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            align-items: center;
            margin-top: 14px;
        }

        .banner-stat-inline {
            display: inline-flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 24px;
            font-size: 14px;
            color: var(--text-muted);
        }

        .banner-stat-inline span strong {
            font-weight: 700;
            color: var(--star-warm);
            font-size: 16px;
            margin-right: 2px;
        }

        /* ============================================================
           通用区块标题
        ============================================================ */
        .section-block {
            padding: var(--section-pad) 0;
        }

        .section-block-sm {
            padding: clamp(40px, 5vw, 70px) 0;
        }

        .section-head {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 20px;
            margin-bottom: 36px;
            flex-wrap: wrap;
        }

        .section-head .sec-title {
            margin-bottom: 0;
            font-size: clamp(1.5rem, 2.5vw, 2rem);
        }

        .section-head .sec-desc {
            color: var(--text-muted);
            font-size: 14px;
            max-width: 360px;
            line-height: 1.7;
        }

        .sub-mark {
            display: inline-block;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--neon-cyan);
            margin-right: 8px;
            vertical-align: middle;
            box-shadow: 0 0 12px rgba(79, 216, 224, 0.8);
        }

        .text-gradient {
            background: linear-gradient(120deg, #cbb7f2, #5fd6de);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .btn-more-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--text-muted);
            font-size: 14px;
            font-weight: 500;
            white-space: nowrap;
            padding: 8px 0;
            border-bottom: 1px solid transparent;
        }

        .btn-more-link i {
            font-size: 13px;
            transition: transform 0.2s;
        }

        .btn-more-link:hover {
            color: var(--neon-cyan);
        }

        .btn-more-link:hover i {
            transform: translateX(4px);
        }

        /* ============================================================
           卡片基础体系
        ============================================================ */
        .card-nova {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
            height: 100%;
            position: relative;
        }

        .card-nova:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-glow);
            border-color: rgba(79, 216, 224, 0.25);
        }

        .card-nova-cover {
            position: relative;
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: #181e2e;
        }

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

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

        .card-nova-cover .cover-gradient {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 55%, rgba(10, 14, 23, 0.7) 100%);
        }

        .card-cover-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(10, 14, 23, 0.75);
            backdrop-filter: blur(6px);
            color: var(--neon-cyan);
            border: 1px solid rgba(79, 216, 224, 0.3);
            border-radius: 48px;
            padding: 4px 14px;
            font-size: 12px;
            font-weight: 500;
        }

        .card-cover-tag {
            position: absolute;
            right: 12px;
            bottom: 12px;
            background: rgba(124, 92, 191, 0.35);
            color: #fff;
            font-size: 12px;
            padding: 3px 12px;
            border-radius: 30px;
            border: 1px solid rgba(255, 255, 255, 0.12);
            backdrop-filter: blur(4px);
        }

        .card-body-n {
            padding: 22px 24px 24px;
        }

        .card-body-n .card-subtitle {
            font-size: 13px;
            color: var(--text-muted);
            letter-spacing: 0.03em;
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .card-body-n h3 {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 10px;
            line-height: 1.4;
        }

        .card-body-n p {
            font-size: 14px;
            line-height: 1.7;
            color: var(--text-muted);
            margin-bottom: 16px;
        }

        .star-badge-mini {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            background: rgba(245, 192, 126, 0.1);
            border: 1px solid rgba(245, 192, 126, 0.2);
            color: var(--star-warm);
            font-size: 12px;
            border-radius: 20px;
            padding: 2px 10px;
        }

        .card-arrow {
            display: inline-flex;
            align-items: center;
            font-size: 14px;
            color: inherit;
            font-weight: 500;
            gap: 6px;
            margin-top: 4px;
            color: var(--text-body);
            border-bottom: 1px solid transparent;
        }

        .card-arrow i {
            font-size: 13px;
            transition: transform 0.2s;
        }

        .card-nova:hover .card-arrow {
            color: var(--neon-cyan);
        }

        .card-nova:hover .card-arrow i {
            transform: translateX(4px);
        }

        /* ============================================================
           首屏后的快速特征区 / 数据徽章区
        ============================================================ */
        .quick-features {
            background: var(--bg-soft);
            border-block: 1px solid rgba(255, 255, 255, 0.04);
            padding: 34px 0;
        }

        .qf-item {
            display: flex;
            align-items: flex-start;
            gap: 14px;
        }

        .qf-icon {
            width: 38px;
            height: 38px;
            border-radius: 12px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: rgba(124, 92, 191, 0.15);
            color: var(--neon-cyan);
            font-size: 16px;
            flex-shrink: 0;
            border: 1px solid rgba(124, 92, 191, 0.2);
        }

        .qf-text {
            font-size: 14px;
            line-height: 1.6;
            color: var(--text-body);
        }

        .qf-text strong {
            color: var(--text-heading);
            display: block;
            font-size: 15px;
            margin-bottom: 2px;
        }

        /* ============================================================
           目录词条 / 卡片区
        ============================================================ */
        .guide-section-title {
            text-align: center;
            max-width: 680px;
            margin: 0 auto 46px;
        }

        .guide-section-title h2 {
            margin-bottom: 14px;
        }

        .guide-section-title p {
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.8;
        }

        /* ============================================================
           图文交错区块（左图右文，也可倒置）
        ============================================================ */
        .feature-row-img {
            border-radius: var(--radius-lg);
            overflow: hidden;
            position: relative;
            min-height: 300px;
            height: 100%;
            background: linear-gradient(145deg, #1b2033, #0e1322);
        }

        .feature-row-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            position: absolute;
            inset: 0;
        }

        .feature-row-img .img-glare {
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(10, 14, 23, 0.2), transparent 55%),
                linear-gradient(0deg, rgba(13, 18, 32, 0.5), transparent 40%);
        }

        .feature-row-body {
            padding: 16px 0;
        }

        .feature-row-body .tag-chip {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 5px 14px;
            border-radius: 30px;
            background: rgba(79, 216, 224, 0.08);
            border: 1px solid rgba(79, 216, 224, 0.25);
            color: var(--neon-cyan);
            font-size: 12px;
            font-weight: 500;
            margin-bottom: 16px;
        }

        .feature-row-body h2 {
            line-height: 1.3;
            margin-bottom: 16px;
        }

        .feature-row-body p {
            margin-bottom: 16px;
            color: var(--text-body);
        }

        .feature-list {
            list-style: none;
            padding-left: 0;
            margin-bottom: 18px;
        }

        .feature-list li {
            position: relative;
            padding-left: 28px;
            font-size: 15px;
            line-height: 1.7;
            margin-bottom: 10px;
            color: var(--text-body);
        }

        .feature-list li::before {
            content: "\f0eb";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            position: absolute;
            left: 2px;
            top: 4px;
            font-size: 14px;
            color: var(--star-warm);
        }

        .feature-list-cyan li::before {
            color: var(--neon-cyan);
        }

        /* ============================================================
           热门观测主题横向卡片（横滑）
        ============================================================ */
        .theme-scroll-row {
            display: flex;
            overflow-x: auto;
            scroll-snap-type: x mandatory;
            gap: 20px;
            padding-bottom: 14px;
            padding-right: 8px;
            margin-right: -8px;
            margin-left: -8px;
            padding-left: 8px;
            scrollbar-width: thin;
            scrollbar-color: rgba(124, 92, 191, 0.4) transparent;
        }

        .theme-scroll-row::-webkit-scrollbar {
            height: 4px;
        }

        .theme-scroll-row::-webkit-scrollbar-track {
            background: transparent;
        }

        .theme-scroll-row::-webkit-scrollbar-thumb {
            background: rgba(124, 92, 191, 0.35);
            border-radius: 8px;
        }

        .theme-scroll-card {
            flex: 0 0 clamp(250px, 28vw, 310px);
            scroll-snap-align: start;
        }

        /* ============================================================
           Checklist 风格区块 / 观测前准备
        ============================================================ */
        .checklist-wrap {
            background: var(--bg-soft);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: clamp(24px, 4vw, 44px);
            height: 100%;
        }

        .checklist-wrap h3 {
            font-size: 18px;
            margin-bottom: 18px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .checklist-icon {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: rgba(124, 92, 191, 0.15);
            border: 1px solid rgba(124, 92, 191, 0.3);
            color: #b69ade;
            font-size: 15px;
            flex-shrink: 0;
        }

        .check-list {
            list-style: none;
            padding-left: 0;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .check-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-size: 14px;
            line-height: 1.6;
            color: var(--text-body);
        }

        .check-list li i {
            color: var(--neon-cyan);
            font-size: 15px;
            margin-top: 3px;
            flex-shrink: 0;
        }

        /* ============================================================
           地点推荐横向卡
        ============================================================ */
        .place-card {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            overflow: hidden;
            height: 100%;
            transition: all 0.3s ease;
        }

        .place-card:hover {
            transform: translateY(-4px);
            border-color: rgba(79, 216, 224, 0.3);
            box-shadow: var(--shadow-glow);
        }

        .place-card-cover {
            aspect-ratio: 16/10;
            background-color: #1b2135;
            background-size: cover;
            background-position: center;
            position: relative;
        }

        .place-card-cover .cover-tint {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 45%, rgba(10, 14, 23, 0.35));
        }

        .place-card-cover .place-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(18, 25, 40, 0.8);
            border: 1px solid var(--border-light);
            color: #d8dde8;
            font-size: 12px;
            border-radius: 30px;
            padding: 4px 14px;
        }

        .place-card .place-body {
            padding: 18px 20px 20px;
        }

        .place-body h3 {
            font-size: 17px;
            margin-bottom: 8px;
        }

        .place-meta {
            display: flex;
            gap: 14px;
            font-size: 12px;
            color: var(--text-muted);
            margin-top: 12px;
            flex-wrap: wrap;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding-top: 12px;
        }

        .place-meta span i {
            margin-right: 4px;
            color: var(--star-warm);
        }

        /* ============================================================
           FAQ 手风琴区
        ============================================================ */
        .faq-wrap {
            max-width: 860px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--bg-soft);
            border: 1px solid rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-md);
            margin-bottom: 14px;
            overflow: hidden;
            transition: border-color 0.2s, box-shadow 0.2s;
        }

        .faq-item:focus-within {
            border-color: rgba(79, 216, 224, 0.4);
        }

        .faq-item[aria-expanded="true"] {
            border-color: rgba(124, 92, 191, 0.25);
        }

        .faq-btn {
            width: 100%;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 18px;
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-heading);
            text-align: left;
            background: transparent;
            border-radius: var(--radius-md);
            transition: background 0.2s;
        }

        .faq-btn:hover {
            background: rgba(255, 255, 255, 0.02);
        }

        .faq-icon {
            width: 30px;
            height: 30px;
            flex-shrink: 0;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: rgba(79, 216, 224, 0.1);
            color: var(--neon-cyan);
            border: 1px solid rgba(79, 216, 224, 0.2);
        }

        .faq-btn.collapsed .faq-icon {
            transition: transform 0.25s;
        }

        .faq-btn:not(.collapsed) .faq-icon {
            transform: rotate(45deg);
            background: rgba(124, 92, 191, 0.2);
            border-color: rgba(124, 92, 191, 0.35);
            color: #c5a8ff;
        }

        .faq-body {
            padding: 0 24px 20px;
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.8;
        }

        .faq-body p {
            margin-bottom: 8px;
        }

        /* ============================================================
           CTA 转换横幅
        ============================================================ */
        .cta-banner {
            position: relative;
            border-radius: 28px;
            background: linear-gradient(120deg, #151b30, #1d1830 55%, #151b30);
            border: 1px solid rgba(124, 92, 191, 0.2);
            overflow: hidden;
            padding: clamp(30px, 5vw, 56px);
            margin-bottom: calc(var(--section-pad) * 0.4);
        }

        .cta-banner::before {
            content: "";
            position: absolute;
            top: -50%;
            right: -15%;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(124, 92, 191, 0.2), transparent 65%);
            pointer-events: none;
        }

        .cta-banner::after {
            content: "";
            position: absolute;
            bottom: -40%;
            left: 20%;
            width: 220px;
            height: 220px;
            background: radial-gradient(circle, rgba(79, 216, 224, 0.12), transparent 70%);
            pointer-events: none;
        }

        .cta-banner .cta-content {
            position: relative;
            z-index: 2;
        }

        .cta-banner h2 {
            font-size: clamp(1.5rem, 2.8vw, 2.1rem);
            margin-bottom: 12px;
        }

        .cta-banner p {
            font-size: 15px;
            max-width: 500px;
            color: #a5b0c3;
        }

        .cta-banner .cta-form {
            position: relative;
            z-index: 2;
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }

        .form-control-n {
            background: var(--bg-input);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 48px;
            color: var(--text-heading);
            padding: 12px 20px;
            min-width: 240px;
            flex: 1 1 200px;
            font-size: 15px;
        }

        .form-control-n::placeholder {
            color: var(--text-muted);
            opacity: 0.8;
        }

        .form-control-n:focus {
            background: var(--bg-input);
            border-color: var(--neon-cyan);
            box-shadow: 0 0 0 3px rgba(79, 216, 224, 0.12);
            color: var(--text-heading);
        }

        .cta-banner .btn-nova {
            padding-left: 28px;
            padding-right: 28px;
        }

        /* ============================================================
           页脚 Footer
        ============================================================ */
        .site-footer {
            background: var(--bg-deep);
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            position: relative;
            padding-top: 20px;
        }

        .footer-topline {
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(120, 76, 190, 0.4), rgba(79, 216, 224, 0.2), transparent);
            margin-bottom: 24px;
        }

        .footer-brand {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-heading);
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 14px;
        }

        .footer-desc {
            font-size: 14px;
            line-height: 1.8;
            color: var(--text-muted);
            max-width: 320px;
            margin-bottom: 16px;
        }

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

        .footer-social a {
            width: 36px;
            height: 36px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.04);
            color: var(--text-muted);
            border: 1px solid rgba(255, 255, 255, 0.05);
            font-size: 15px;
            transition: all 0.2s;
        }

        .footer-social a:hover {
            color: var(--neon-cyan);
            border-color: rgba(79, 216, 224, 0.3);
            background: rgba(79, 216, 224, 0.05);
        }

        .footer-title {
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 18px;
            color: var(--text-heading);
            position: relative;
            padding-bottom: 8px;
        }

        .footer-title::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 24px;
            height: 1px;
            background: var(--neon-cyan);
        }

        .footer-links {
            list-style: none;
            padding-left: 0;
            margin-bottom: 0;
        }

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

        .footer-links a {
            font-size: 14px;
            color: var(--text-muted);
            transition: all 0.2s;
            display: inline-block;
        }

        .footer-links a:hover {
            color: var(--neon-cyan);
            transform: translateX(3px);
        }

        .footer-copyright {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding: 20px 0 25px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 12px;
        }

        .footer-copyright p {
            margin-bottom: 0;
            font-size: 13px;
            color: var(--text-muted);
        }

        .footer-copyright a {
            color: var(--text-muted);
        }

        .footer-copyright a:hover {
            color: var(--neon-cyan);
        }

        /* ============================================================
           移动端与响应式适配
        ============================================================ */
        @media (max-width: 991.98px) {
            .section-head {
                align-items: flex-start;
                flex-direction: column;
            }
        }

        @media (max-width: 767.98px) {
            .container-x {
                padding-left: 20px;
                padding-right: 20px;
            }

            .navbar-brand {
                font-size: 17px;
            }

            .page-banner .lead-tax {
                font-size: 15px;
            }

            .banner-stat-inline {
                gap: 14px;
                font-size: 13px;
            }

            .qf-item {
                flex-direction: column;
            }
        }

        @media (max-width: 575.98px) {
            body {
                font-size: 15px;
            }

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

            .btn-nova {
                padding: 11px 20px;
                font-size: 14px;
            }

            .card-nova-cover {
                aspect-ratio: 16 / 11;
            }

            .cta-banner {
                border-radius: 20px;
            }

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

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

/* roulang page: article */
:root {
            --bg-night: #070a13;
            --bg-deep: #0b101e;
            --bg-card: #11182a;
            --bg-soft: #151d33;
            --line-soft: rgba(255, 255, 255, .08);
            --line-mid: rgba(255, 255, 255, .14);
            --text-hi: #edf2fc;
            --text-mid: #adb6cf;
            --text-low: #7e88a5;
            --violet: #8577f2;
            --cyan: #4ad9d0;
            --amber: #f6c970;
            --grad-brand: linear-gradient(100deg, #8577f2, #4ad9d0);
            --shadow-card: 0 10px 32px rgba(0, 0, 0, .42);
            --shadow-glow: 0 12px 36px rgba(90, 88, 235, .20);
            --radius-xl: 22px;
            --radius-lg: 18px;
            --radius-md: 14px;
            --font: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
        }

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

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

        body {
            margin: 0;
            font-family: var(--font);
            background:
                radial-gradient(1100px 600px at 85% -8%, rgba(115, 94, 214, .18), transparent 60%),
                radial-gradient(800px 480px at 4% 12%, rgba(38, 178, 195, .10), transparent 60%),
                linear-gradient(180deg, #070a13 0%, #090e1a 50%, #070a13 100%);
            background-color: var(--bg-night);
            color: var(--text-hi);
            line-height: 1.7;
            padding-top: 78px;
            min-height: 100vh;
        }

        body,
        button,
        input {
            font-family: var(--font);
        }

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

        a {
            color: var(--cyan);
            text-decoration: none;
            transition: color .25s ease;
        }

        a:hover {
            color: #b9f5f1;
        }

        .container-x {
            width: min(100% - 48px, 1280px);
            margin-left: auto;
            margin-right: auto;
        }

        .btn-nova {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: .55rem;
            padding: .82rem 1.65rem;
            border-radius: 999px;
            border: 1px solid transparent;
            font-weight: 600;
            font-size: .95rem;
            line-height: 1;
            transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease, background .25s ease, color .25s ease;
            white-space: nowrap;
        }

        .btn-primary-n {
            background: linear-gradient(100deg, #9b8cff, #34d5ca);
            color: #081020;
            box-shadow: 0 8px 28px rgba(94, 83, 255, .22);
        }

        .btn-primary-n:hover {
            color: #081020;
            transform: translateY(-2px);
            box-shadow: 0 12px 34px rgba(68, 219, 211, .28);
        }

        .btn-outline-n {
            background: rgba(11, 17, 31, .78);
            border-color: rgba(118, 227, 224, .52);
            color: #d9e6ff;
        }

        .btn-outline-n:hover {
            color: #fff;
            border-color: rgba(133, 255, 246, .9);
            box-shadow: 0 0 24px rgba(74, 217, 208, .16);
            transform: translateY(-2px);
        }

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

        .site-nav {
            background: #080c17;
            border-bottom: 1px solid rgba(255, 255, 255, .07);
            box-shadow: 0 10px 30px rgba(0, 0, 0, .35);
            min-height: 78px;
        }

        .site-nav::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, transparent, rgba(133, 119, 242, .9), rgba(74, 217, 208, .8), transparent);
            pointer-events: none;
        }

        .site-nav .navbar-brand,
        .footer-brand {
            display: inline-flex;
            align-items: center;
            gap: .68rem;
            font-size: 1.32rem;
            font-weight: 800;
            letter-spacing: .01em;
            color: #f3f6ff;
        }

        .footer-brand {
            color: #f3f6ff;
        }

        .brand-mark {
            width: 38px;
            height: 38px;
            border-radius: 12px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, #7b6cf6, #2fbfb6);
            color: #0a1228;
            font-size: 1rem;
            box-shadow: 0 0 18px rgba(116, 101, 244, .45);
            flex: 0 0 auto;
        }

        .site-nav .navbar-toggler {
            border: 0;
            color: #fff;
            font-size: 1.35rem;
            padding: .25rem .55rem;
            box-shadow: none;
        }

        .site-nav .navbar-toggler:focus {
            box-shadow: none;
        }

        .site-nav .nav-link {
            color: #bdc6dd;
            padding: .60rem .85rem;
            margin: 0 .15rem;
            border-radius: 999px;
            font-weight: 500;
            font-size: .95rem;
            position: relative;
            transition: color .25s ease, background .25s ease;
        }

        .site-nav .nav-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, .04);
        }

        .site-nav .nav-link.active {
            color: #fff;
            background: rgba(74, 217, 208, .08);
        }

        .site-nav .nav-link.active::after {
            content: "";
            position: absolute;
            left: 50%;
            bottom: 2px;
            transform: translateX(-50%);
            width: 18px;
            height: 2px;
            border-radius: 2px;
            background: var(--cyan);
            box-shadow: 0 0 12px rgba(74, 217, 208, .85);
        }

        .nav-cta-btn {
            display: inline-flex;
            align-items: center;
            gap: .45rem;
            padding: .62rem 1.28rem;
            border-radius: 999px;
            font-size: .9rem;
            font-weight: 600;
            color: #081020;
            background: linear-gradient(100deg, #9b8cff, #34d5ca);
            transition: transform .25s ease, box-shadow .25s ease;
            border: 0;
        }

        .nav-cta-btn:hover {
            color: #081020;
            transform: translateY(-1px);
            box-shadow: 0 8px 30px rgba(73, 211, 208, .25);
        }

        .navbar-nav .nav-cta-btn {
            margin-top: .4rem;
        }

        @media (max-width: 991.98px) {
            .site-nav .navbar-collapse {
                background: #0a101e;
                border: 1px solid rgba(255, 255, 255, .08);
                border-radius: 20px;
                padding: 1rem 1.1rem 1.1rem;
                margin-top: .7rem;
                box-shadow: 0 18px 44px rgba(0, 0, 0, .45);
            }

            .site-nav .nav-item {
                margin: .12rem 0;
            }

            .site-nav .navbar-nav > .d-lg-none .nav-cta-btn {
                width: 100%;
                justify-content: center;
                margin-top: .9rem;
            }
        }

        .article-banner {
            position: relative;
            isolation: isolate;
            padding: 54px 0 60px;
            background: url('/assets/images/backpic/back-3.webp') center / cover no-repeat;
            border-bottom: 1px solid rgba(255, 255, 255, .07);
        }

        .article-banner::before {
            content: "";
            position: absolute;
            inset: 0;
            background:
                linear-gradient(90deg, rgba(6, 9, 18, .72), rgba(7, 10, 19, .46)),
                linear-gradient(180deg, rgba(7, 10, 21, .82), rgba(7, 10, 21, .96));
            z-index: -1;
        }

        .article-breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: .35rem;
            font-size: .86rem;
            color: var(--text-mid);
            margin-bottom: 1.2rem;
        }

        .article-breadcrumb a {
            color: #bdc6dd;
        }

        .article-breadcrumb a:hover {
            color: #fff;
        }

        .article-breadcrumb .seperator-arrow {
            color: var(--text-low);
            font-size: .75rem;
            opacity: .8;
        }

        .article-breadcrumb .current {
            color: var(--cyan);
            max-width: 320px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        .article-banner .row {
            align-items: center;
        }

        .article-heading {
            font-size: clamp(2rem, 4vw, 3rem);
            font-weight: 800;
            line-height: 1.24;
            letter-spacing: -.02em;
            color: #fff;
            margin: 0;
            text-shadow: 0 2px 30px rgba(0, 0, 0, .45);
        }

        .article-meta-list {
            display: flex;
            flex-wrap: wrap;
            gap: .6rem;
            margin-top: 1.4rem;
        }

        .article-meta-item {
            display: inline-flex;
            align-items: center;
            gap: .45rem;
            background: rgba(9, 14, 27, .6);
            border: 1px solid rgba(255, 255, 255, .12);
            border-radius: 999px;
            padding: .45rem 1rem;
            font-size: .83rem;
            color: var(--text-mid);
        }

        .article-meta-item i {
            color: var(--cyan);
            font-size: .88rem;
        }

        .article-content-wrap {
            position: relative;
            z-index: 1;
            margin-top: -1px;
        }

        .article-paper {
            background: linear-gradient(180deg, rgba(17, 24, 42, .62), rgba(11, 16, 30, .84));
            border: 1px solid rgba(255, 255, 255, .08);
            border-radius: 28px;
            padding: clamp(1.4rem, 4vw, 3rem);
            box-shadow: 0 28px 80px rgba(0, 0, 0, .35);
            margin-top: 22px;
        }

        .article-copy {
            font-size: 1.04rem;
            line-height: 1.95;
            color: #dde4f2;
            overflow-wrap: break-word;
        }

        .article-copy p {
            margin-top: 0;
            margin-bottom: 1.55em;
        }

        .article-copy h2 {
            font-size: 1.65rem;
            font-weight: 750;
            margin: 2.1em 0 .8em;
            color: #f3f6ff;
        }

        .article-copy h3 {
            font-size: 1.25rem;
            font-weight: 700;
            margin: 1.8em 0 .7em;
            color: #d8edff;
        }

        .article-copy ul,
        .article-copy ol {
            padding-left: 1.3rem;
            margin: 1rem 0 1.6rem;
        }

        .article-copy li {
            margin: .45rem 0;
            padding-left: .15rem;
        }

        .article-copy blockquote {
            border-left: 3px solid var(--cyan);
            background: rgba(74, 217, 208, .06);
            padding: 1rem 1.3rem;
            border-radius: 0 16px 16px 0;
            margin: 1.6rem 0;
            color: #c7d2e8;
        }

        .article-copy blockquote p {
            margin: 0;
        }

        .article-copy img {
            max-width: 100%;
            height: auto;
            border-radius: 18px;
            margin: 1.7rem auto;
            box-shadow: 0 16px 40px rgba(0, 0, 0, .35);
        }

        .article-copy figcaption,
        .article-copy .wp-caption-text {
            font-size: .85rem;
            color: var(--text-mid);
            text-align: center;
            margin-top: -1rem;
            margin-bottom: 1.4rem;
        }

        .article-copy a {
            color: #65e3e8;
            text-decoration: underline;
            text-underline-offset: .2rem;
        }

        .article-copy a:hover {
            color: #a7f6f2;
        }

        .article-copy pre {
            background: #0a1020;
            border: 1px solid rgba(255, 255, 255, .06);
            border-radius: 16px;
            padding: 1rem 1.2rem;
            overflow: auto;
            font-size: .92rem;
        }

        .related-area {
            padding: 74px 0 30px;
        }

        .section-head {
            display: flex;
            align-items: end;
            justify-content: space-between;
            gap: 1rem;
            margin-bottom: 2.2rem;
        }

        .section-title {
            font-size: clamp(1.45rem, 3vw, 2.05rem);
            font-weight: 800;
            margin: 0;
            color: #f3f6ff;
            letter-spacing: -.01em;
        }

        .section-caption {
            color: var(--text-mid);
            margin-top: .3rem;
            font-size: .96rem;
        }

        .section-more-link {
            color: var(--cyan);
            font-size: .9rem;
            font-weight: 600;
            white-space: nowrap;
        }

        .section-more-link i {
            margin-left: .25rem;
        }

        .story-card {
            background: #0f1628;
            border: 1px solid rgba(255, 255, 255, .07);
            border-radius: 22px;
            overflow: hidden;
            height: 100%;
            display: flex;
            flex-direction: column;
            transition: transform .3s ease, border-color .3s ease, box-shadow .3s ease;
        }

        .story-card:hover {
            transform: translateY(-5px);
            border-color: rgba(133, 255, 246, .28);
            box-shadow: 0 16px 44px rgba(0, 0, 0, .45), 0 0 30px rgba(65, 180, 188, .09);
        }

        .story-img {
            position: relative;
            display: block;
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: #0a101e;
        }

        .story-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .45s ease;
        }

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

        .story-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(7, 10, 20, .78);
            color: #a9f1ec;
            border: 1px solid rgba(74, 217, 208, .55);
            border-radius: 999px;
            font-size: .78rem;
            padding: .25rem .78rem;
            backdrop-filter: none;
        }

        .story-body {
            padding: 1.2rem 1.4rem 1.3rem;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .story-title {
            font-size: 1.1rem;
            font-weight: 700;
            line-height: 1.45;
            margin: 0 0 .5rem;
        }

        .story-title a {
            color: #eef2fd;
        }

        .story-title a:hover {
            color: var(--cyan);
        }

        .story-summary {
            color: var(--text-mid);
            font-size: .9rem;
            line-height: 1.72;
            margin-bottom: 1rem;
            flex: 1;
        }

        .story-meta {
            display: flex;
            align-items: center;
            gap: 1rem;
            font-size: .8rem;
            color: var(--text-low);
        }

        .story-meta i {
            color: var(--cyan);
        }

        .cta-section {
            padding-top: 30px;
            padding-bottom: 30px;
        }

        .cta-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 2rem;
            background:
                radial-gradient(900px 260px at 20% 0%, rgba(126, 101, 242, .22), transparent 70%),
                linear-gradient(110deg, #11182d, #0b101c);
            border: 1px solid rgba(133, 119, 242, .35);
            border-radius: 30px;
            padding: clamp(1.7rem, 5vw, 3.2rem);
            box-shadow: 0 22px 70px rgba(0, 0, 0, .35);
        }

        .cta-copy h2 {
            font-size: clamp(1.5rem, 3vw, 2rem);
            font-weight: 800;
            color: #fff;
            margin: 0 0 .5rem;
        }

        .cta-copy p {
            color: var(--text-mid);
            margin: 0;
            max-width: 580px;
        }

        .cta-actions {
            display: flex;
            flex-wrap: wrap;
            gap: .8rem;
            flex-shrink: 0;
        }

        .site-footer {
            background: #060a13;
            padding: 0;
        }

        .footer-topline {
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(133, 119, 242, .5), rgba(74, 217, 208, .5), transparent);
        }

        .site-footer {
            margin-top: 80px;
        }

        .footer-desc {
            color: var(--text-mid);
            font-size: .9rem;
            line-height: 1.75;
            margin-top: 1rem;
            max-width: 320px;
        }

        .footer-social {
            display: flex;
            gap: .65rem;
            margin-top: 1.2rem;
        }

        .footer-social a {
            width: 38px;
            height: 38px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: rgba(255, 255, 255, .05);
            border: 1px solid rgba(255, 255, 255, .09);
            border-radius: 12px;
            color: #bdc6dd;
            transition: all .25s ease;
        }

        .footer-social a:hover {
            color: #081020;
            background: linear-gradient(110deg, #9b8cff, #4ad9d0);
            transform: translateY(-2px);
        }

        .footer-title {
            color: #eef2fd;
            font-size: .95rem;
            font-weight: 700;
            letter-spacing: .04em;
            margin-bottom: 1.1rem;
        }

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

        .footer-links li {
            margin-bottom: .55rem;
        }

        .footer-links a {
            color: var(--text-mid);
            font-size: .9rem;
            transition: color .2s ease, padding-left .2s ease;
        }

        .footer-links a:hover {
            color: var(--cyan);
            padding-left: .2rem;
        }

        .footer-copyright {
            border-top: 1px solid rgba(255, 255, 255, .07);
            padding: 1.4rem 0 1.6rem;
            margin-top: .5rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: .8rem;
            flex-wrap: wrap;
        }

        .footer-copyright p {
            margin: 0;
            font-size: .84rem;
            color: var(--text-low);
        }

        .footer-copyright a {
            color: #98a2c0;
        }

        .footer-copyright a:hover {
            color: var(--cyan);
        }

        .footer-brand {
            font-size: 1.34rem;
            font-weight: 800;
        }

        #footer-latest-year {
            white-space: nowrap;
        }

        @media (max-width: 991.98px) {
            .cta-inner {
                flex-direction: column;
                align-items: flex-start;
            }
        }

        @media (max-width: 767.98px) {
            .container-x {
                width: min(100% - 30px, 1280px);
            }

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

            .article-paper {
                border-radius: 20px;
                padding: 1.25rem;
            }

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

            .article-copy h2 {
                font-size: 1.4rem;
            }

            .article-copy h3 {
                font-size: 1.15rem;
            }
        }

        @media (max-width: 575.98px) {
            body {
                padding-top: 70px;
            }

            .site-nav {
                min-height: 70px;
            }

            .article-banner {
                padding: 40px 0 42px;
            }

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

            .cta-actions {
                width: 100%;
            }

            .cta-actions .btn-nova {
                flex: 1 1 auto;
            }
        }

        .notfound-section {
            min-height: 62vh;
            display: flex;
            align-items: center;
            padding: 4rem 0;
        }

        .empty-card {
            text-align: center;
            max-width: 620px;
            margin: 0 auto;
            background: linear-gradient(180deg, rgba(17, 24, 42, .55), rgba(8, 12, 22, .86));
            border: 1px solid rgba(255, 255, 255, .08);
            border-radius: 30px;
            padding: 3.5rem 2.2rem;
            box-shadow: 0 18px 56px rgba(0, 0, 0, .35);
        }

        .empty-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 68px;
            height: 68px;
            border-radius: 22px;
            background: linear-gradient(135deg, rgba(133, 119, 242, .22), rgba(74, 217, 208, .20));
            border: 1px solid rgba(133, 255, 246, .28);
            color: var(--cyan);
            font-size: 1.7rem;
            margin-bottom: 1.2rem;
        }

        .empty-card h1 {
            color: #fff;
            font-weight: 800;
            margin-bottom: .7rem;
        }

        .empty-card p {
            color: var(--text-mid);
            margin-bottom: 1.8rem;
        }

        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation-duration: .01ms !important;
                transition-duration: .01ms !important;
                scroll-behavior: auto !important;
            }
        }

/* roulang page: category2 */
:root {
            --bg-deep: #050810;
            --bg-night: #0a0f1d;
            --bg-elev: #101827;
            --bg-card: #0e1526;
            --border-light: rgba(255, 255, 255, 0.08);
            --border-soft: rgba(255, 255, 255, 0.13);
            --text-high: #eef1fa;
            --text-body: #b2bed6;
            --text-dim: #7f8baa;
            --violet: #8b5cf6;
            --cyan: #22d3ee;
            --warm: #f4d68b;
            --glow-violet: rgba(139, 92, 246, 0.4);
            --glow-cyan: rgba(34, 211, 238, 0.35);
            --grad-primary: linear-gradient(120deg, #a78bfa 0%, #7c3aed 38%, #22d3ee 130%);
            --grad-dark: linear-gradient(145deg, rgba(139, 92, 246, 0.12), rgba(34, 211, 238, 0.06));
            --radius-lg: 24px;
            --radius-md: 16px;
            --radius-sm: 14px;
            --shadow-card: 0 18px 40px rgba(0, 0, 0, 0.24);
            --shadow-lift: 0 10px 34px rgba(139, 92, 246, 0.22);
            --nav-height: 78px;
            --space-section: clamp(70px, 8vw, 116px);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            background: var(--bg-deep);
            color: var(--text-body);
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
            line-height: 1.75;
            font-size: 15.5px;
            letter-spacing: 0.01em;
            overflow-x: hidden;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.24s ease, border-color 0.24s ease, background 0.24s ease;
        }

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

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

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        .accordion-button:focus-visible {
            outline: 2px solid var(--cyan);
            outline-offset: 4px;
            box-shadow: none;
        }

        .container-x {
            width: 100%;
            max-width: 1260px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        .skip-link {
            position: fixed;
            top: -80px;
            left: 18px;
            z-index: 2000;
            padding: 12px 22px;
            border-radius: 0 0 var(--radius-sm) var(--radius-sm);
            background: var(--grad-primary);
            color: #fff;
            transition: top 0.25s ease;
        }

        .skip-link:focus {
            top: 0;
            color: #fff;
        }

        /* ===== 导航 ===== */
        .site-nav {
            min-height: var(--nav-height);
            background: rgba(6, 9, 17, 0.98);
            border-bottom: 1px solid var(--border-light);
            padding-top: 0;
            padding-bottom: 0;
        }

        .site-nav::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, transparent 4%, var(--violet) 30%, var(--cyan) 70%, transparent 96%);
            pointer-events: none;
        }

        .site-nav .container-x {
            min-height: var(--nav-height);
        }

        .site-nav .navbar-brand {
            color: var(--text-high);
            font-size: 1.38rem;
            font-weight: 700;
            letter-spacing: 0.03em;
            display: inline-flex;
            align-items: center;
            gap: 12px;
            padding-top: 0;
            padding-bottom: 0;
            margin-right: 30px;
        }

        .brand-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 34px;
            height: 34px;
            border-radius: 10px;
            background: linear-gradient(145deg, rgba(139, 92, 246, 0.24), rgba(34, 211, 238, 0.2));
            border: 1px solid rgba(139, 92, 246, 0.4);
            color: #cdd1ff;
            font-size: 0.95rem;
            box-shadow: 0 0 22px rgba(139, 92, 246, 0.18);
            flex: 0 0 auto;
        }

        .site-nav .nav-link {
            font-size: 0.98rem;
            color: rgba(204, 215, 237, 0.82);
            font-weight: 500;
            padding: 0.55rem 0.9rem;
            border-radius: 12px;
            position: relative;
        }

        .site-nav .nav-link:hover {
            color: #fff;
        }

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

        .site-nav .nav-link.active::before {
            content: "";
            position: absolute;
            left: 14px;
            right: 14px;
            bottom: -2px;
            height: 2px;
            border-radius: 9px;
            background: var(--grad-primary);
            box-shadow: 0 0 10px var(--glow-violet);
        }

        @media (min-width: 992px) {
            .site-nav .nav-link::after {
                content: "";
                position: absolute;
                left: 12px;
                right: 12px;
                bottom: -3px;
                height: 2px;
                border-radius: 9px;
                background: linear-gradient(90deg, var(--violet), var(--cyan));
                opacity: 0;
                transform: scaleX(0.35);
                transform-origin: left center;
                transition: opacity 0.24s ease, transform 0.24s ease;
            }

            .site-nav .nav-link:hover::after {
                opacity: 0.6;
                transform: scaleX(1);
            }
        }

        .site-nav .navbar-toggler {
            background: rgba(139, 92, 246, 0.12);
            border: 1px solid rgba(139, 92, 246, 0.25);
            border-radius: 12px;
            padding: 6px 12px;
            color: var(--text-high);
            box-shadow: none;
        }

        .site-nav .navbar-toggler i {
            color: var(--text-high);
            font-size: 1.2rem;
        }

        .nav-cta-wrapper {
            padding-left: 10px;
        }

        .nav-cta-btn {
            white-space: nowrap;
        }

        .btn-nova {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: 999px;
            font-size: 0.95rem;
            font-weight: 600;
            line-height: 1;
            padding: 12px 22px;
            border: 1px solid transparent;
            transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease, color 0.25s ease, border-color 0.25s ease;
            letter-spacing: 0.01em;
        }

        .btn-nova:hover {
            color: #fff;
            transform: translateY(-2px);
        }

        .btn-primary-n {
            background: var(--grad-primary);
            color: #fff;
            box-shadow: 0 12px 30px rgba(124, 58, 237, 0.3);
            border-color: rgba(255, 255, 255, 0.16);
        }

        .btn-primary-n:hover {
            background: linear-gradient(120deg, #8b5cf6 0%, #7c3aed 45%, #22d3ee 130%);
            box-shadow: 0 14px 38px rgba(124, 58, 237, 0.42);
            color: #fff;
        }

        .btn-secondary-n {
            background: rgba(10, 18, 34, 0.7);
            border: 1px solid rgba(34, 211, 238, 0.42);
            color: #e2ecff;
        }

        .btn-secondary-n:hover {
            border-color: var(--cyan);
            box-shadow: 0 0 26px rgba(34, 211, 238, 0.28);
            color: #fff;
        }

        .btn-ghost-n {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.13);
            color: var(--text-body);
        }

        .btn-ghost-n:hover {
            border-color: var(--cyan);
            color: var(--cyan);
            background: rgba(34, 211, 238, 0.06);
        }

        /* ===== 分类 Hero ===== */
        .category-hero {
            position: relative;
            padding: calc(var(--nav-height) + 64px) 0 78px;
            overflow: hidden;
            min-height: 520px;
            display: flex;
            align-items: flex-end;
        }

        .hero-bg-img {
            position: absolute;
            inset: 0;
            z-index: 0;
            background-size: cover;
            background-position: center 32%;
        }

        .hero-bg-img::after {
            content: "";
            position: absolute;
            inset: 0;
            background:
                radial-gradient(ellipse at 78% 20%, rgba(139, 92, 246, 0.3), transparent 48%),
                linear-gradient(180deg, rgba(5, 8, 16, 0.38) 0%, rgba(5, 8, 16, 0.72) 54%, rgba(5, 8, 16, 0.94) 90%, #050810 100%);
        }

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

        .breadcrumb-nova {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            font-size: 0.86rem;
            color: var(--text-dim);
            margin-bottom: 36px;
        }

        .breadcrumb-nova a {
            color: rgba(204, 215, 237, 0.75);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

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

        .breadcrumb-nova .sep {
            width: 5px;
            height: 5px;
            border-radius: 50%;
            background: var(--violet);
            display: inline-block;
            opacity: 0.7;
        }

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

        .cat-kicker {
            display: inline-flex;
            align-items: center;
            gap: 9px;
            font-size: 0.88rem;
            color: #d4ccff;
            background: rgba(139, 92, 246, 0.13);
            border: 1px solid rgba(139, 92, 246, 0.28);
            border-radius: 999px;
            padding: 7px 16px;
            margin-bottom: 20px;
            letter-spacing: 0.03em;
        }

        .cat-kicker i {
            color: var(--cyan);
        }

        .category-hero h1 {
            font-size: clamp(40px, 6vw, 66px);
            font-weight: 700;
            color: #f5f7ff;
            letter-spacing: 0.01em;
            line-height: 1.16;
            margin-bottom: 20px;
            text-shadow: 0 0 36px rgba(139, 92, 246, 0.28);
        }

        .category-hero .lead-text {
            max-width: 760px;
            font-size: clamp(1rem, 1.3vw, 1.12rem);
            line-height: 1.9;
            color: #c3cde4;
            margin-bottom: 14px;
        }

        .hero-meta-row {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 22px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(10, 18, 30, 0.72);
            border: 1px solid var(--border-soft);
            border-radius: 999px;
            padding: 8px 15px;
            font-size: 0.86rem;
            color: #cdd6e9;
        }

        .hero-badge i {
            color: var(--cyan);
            font-size: 0.82rem;
        }

        .hero-badge .dot {
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: var(--warm);
            box-shadow: 0 0 12px rgba(244, 214, 139, 0.72);
            display: inline-block;
        }

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

        /* ===== 通用节 ===== */
        .section {
            padding-top: clamp(64px, 8vw, 110px);
            padding-bottom: clamp(64px, 8vw, 110px);
            position: relative;
        }

        .section-tight {
            padding-top: clamp(48px, 6vw, 80px);
            padding-bottom: clamp(48px, 6vw, 80px);
        }

        .section-head {
            margin-bottom: clamp(34px, 5vw, 56px);
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 9px;
            font-size: 0.88rem;
            color: var(--cyan);
            letter-spacing: 0.12em;
            margin-bottom: 12px;
            text-transform: uppercase;
        }

        .section-label::before {
            content: "";
            width: 28px;
            height: 2px;
            background: var(--cyan);
            display: inline-block;
            vertical-align: middle;
            box-shadow: 0 0 8px var(--glow-cyan);
        }

        .section-head h2 {
            font-size: clamp(26px, 3.4vw, 42px);
            font-weight: 700;
            color: var(--text-high);
            line-height: 1.3;
            margin-bottom: 10px;
            letter-spacing: 0.01em;
        }

        .section-head p {
            max-width: 620px;
            font-size: 1.02rem;
            color: var(--text-body);
        }

        .section-head.center-head {
            text-align: center;
        }

        .section-head.center-head .section-label {
            justify-content: center;
        }

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

        /* ===== 主题卡片网格 ===== */
        .section-elevated {
            background: var(--bg-night);
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
        }

        .topic-card {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 28px 24px 26px;
            height: 100%;
            position: relative;
            overflow: hidden;
            transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
        }

        .topic-card::before {
            content: "";
            position: absolute;
            top: -30px;
            right: -30px;
            width: 110px;
            height: 110px;
            background: radial-gradient(circle, rgba(139, 92, 246, 0.22), transparent 68%);
            pointer-events: none;
        }

        .topic-card:hover {
            transform: translateY(-6px);
            border-color: rgba(139, 92, 246, 0.55);
            box-shadow: 0 18px 44px rgba(0, 0, 0, 0.32), 0 0 34px rgba(139, 92, 246, 0.15);
        }

        .topic-icon {
            width: 46px;
            height: 46px;
            border-radius: 15px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--grad-dark);
            border: 1px solid rgba(139, 92, 246, 0.28);
            color: #c6baff;
            font-size: 1.1rem;
            margin-bottom: 20px;
        }

        .topic-card h3 {
            font-size: 1.12rem;
            color: #edf2ff;
            font-weight: 600;
            margin-bottom: 12px;
        }

        .topic-card p {
            font-size: 0.93rem;
            color: var(--text-body);
            margin-bottom: 0;
            line-height: 1.85;
        }

        .topic-card .tag {
            display: inline-block;
            margin-top: 20px;
            font-size: 0.78rem;
            color: #77809c;
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 99px;
            padding: 3px 11px;
            background: rgba(0, 0, 0, 0.14);
        }

        /* ===== 特色推荐区 ===== */
        .spotlight-wrap {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-light);
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }

        .spotlight-media {
            height: 100%;
            min-height: 330px;
            position: relative;
            overflow: hidden;
        }

        .spotlight-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            position: absolute;
            inset: 0;
            transition: transform 0.5s ease;
        }

        .spotlight-wrap:hover .spotlight-media img {
            transform: scale(1.04);
        }

        .spotlight-media .img-caption {
            position: absolute;
            left: 20px;
            bottom: 18px;
            z-index: 3;
            color: #fff;
            background: rgba(7, 13, 24, 0.72);
            border-radius: 999px;
            border: 1px solid rgba(255, 255, 255, 0.16);
            font-size: 0.82rem;
            padding: 6px 15px;
            backdrop-filter: blur(6px);
        }

        .spotlight-content {
            padding: clamp(30px, 4vw, 48px);
            display: flex;
            flex-direction: column;
            justify-content: center;
            height: 100%;
        }

        .spotlight-content .spotlight-kicker {
            color: var(--cyan);
            font-size: 0.9rem;
            margin-bottom: 12px;
            font-weight: 500;
        }

        .spotlight-content h3 {
            color: var(--text-high);
            font-size: clamp(1.5rem, 2.6vw, 2.1rem);
            line-height: 1.4;
            margin-bottom: 20px;
            font-weight: 700;
        }

        .spotlight-list {
            list-style: none;
            padding: 0;
            margin: 0 0 28px 0;
        }

        .spotlight-list li {
            display: flex;
            gap: 14px;
            align-items: flex-start;
            padding: 11px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 1rem;
            line-height: 1.8;
        }

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

        .spotlight-list .icon-c {
            color: var(--cyan);
            margin-top: 7px;
            min-width: 14px;
        }

        /* ===== 双卡导航 ===== */
        .bridge-card {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 30px;
            height: 100%;
            position: relative;
            overflow: hidden;
            transition: border-color 0.3s ease, background 0.3s ease;
        }

        .bridge-card:hover {
            border-color: rgba(34, 211, 238, 0.5);
            background: rgba(25, 36, 60, 0.72);
        }

        .bridge-card .card-bg {
            position: absolute;
            inset: 0;
            z-index: 0;
            background-size: cover;
            background-position: center;
            opacity: 0.38;
        }

        .bridge-card .card-bg::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(100deg, rgba(8, 13, 25, 0.84) 20%, rgba(8, 13, 25, 0.35) 100%);
        }

        .bridge-card .bridge-body {
            position: relative;
            z-index: 2;
            height: 100%;
        }

        .bridge-card .tag-outline {
            display: inline-flex;
            gap: 7px;
            align-items: center;
            color: var(--cyan);
            border: 1px solid rgba(34, 211, 238, 0.4);
            border-radius: 999px;
            padding: 5px 13px;
            font-size: 0.78rem;
            letter-spacing: 0.04em;
            margin-bottom: 22px;
        }

        .bridge-card h3 {
            color: var(--text-high);
            font-size: 1.55rem;
            line-height: 1.4;
            margin-bottom: 16px;
            font-weight: 700;
        }

        .bridge-card p {
            font-size: 0.98rem;
            max-width: 380px;
            margin-bottom: 26px;
        }

        .bridge-link {
            display: inline-flex;
            gap: 9px;
            align-items: center;
            font-weight: 600;
            color: #cbe9ff;
            border-bottom: 1px solid rgba(139, 92, 246, 0.5);
            padding-bottom: 3px;
            font-size: 0.98rem;
        }

        .bridge-link i {
            color: var(--cyan);
        }

        /* ===== 阅读流程 ===== */
        .steps-row {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 26px;
        }

        .step-card {
            background: rgba(10, 16, 29, 0.82);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 34px 26px;
            position: relative;
            overflow: hidden;
        }

        .step-card::before {
            content: "";
            position: absolute;
            left: 0;
            top: 28px;
            bottom: 28px;
            width: 3px;
            background: var(--grad-primary);
            border-radius: 9px;
            opacity: 0.75;
            box-shadow: 0 0 18px rgba(139, 92, 246, 0.45);
        }

        .step-num {
            font-weight: 700;
            font-size: 2rem;
            line-height: 1;
            color: rgba(139, 92, 246, 0.34);
            margin-bottom: 18px;
            display: block;
        }

        .step-card h3 {
            color: #eef3ff;
            font-size: 1.18rem;
            margin-bottom: 14px;
            font-weight: 600;
        }

        .step-card p {
            font-size: 0.94rem;
            margin-bottom: 0;
        }

        /* ===== FAQ ===== */
        .faq-wrap {
            max-width: 900px;
            margin: 0 auto;
        }

        .faq-wrap .accordion-item {
            background: rgba(13, 20, 34, 0.86);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md) !important;
            margin-bottom: 18px;
            overflow: hidden;
        }

        .faq-wrap .accordion-button {
            background: transparent;
            color: var(--text-high);
            font-weight: 600;
            padding: 22px 28px;
            font-size: 1.02rem;
            border: none;
            box-shadow: none;
            line-height: 1.5;
        }

        .faq-wrap .accordion-button:not(.collapsed) {
            color: #ffffff;
            background: rgba(139, 92, 246, 0.07);
            box-shadow: inset 0 1px 0 rgba(139, 92, 246, 0.24);
        }

        .faq-wrap .accordion-button::after {
            content: "\002B";
            background-image: none;
            font-family: "Font Awesome 6 Free", serif;
            font-weight: 900;
            font-size: 1.15rem;
            color: var(--cyan);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 28px;
            height: 28px;
            flex: 0 0 auto;
            transition: transform 0.25s ease;
            border-radius: 50%;
            background: rgba(34, 211, 238, 0.07);
        }

        .faq-wrap .accordion-button:not(.collapsed)::after {
            content: "\2212";
            transform: rotate(180deg);
            color: #fff;
            background: rgba(139, 92, 246, 0.16);
        }

        .faq-wrap .accordion-body {
            padding: 0 30px 26px 30px;
            color: var(--text-body);
            font-size: 0.98rem;
            line-height: 1.8;
        }

        /* ===== CTA ===== */
        .cta-block {
            background: linear-gradient(120deg, rgba(65, 34, 118, 0.96), rgba(24, 47, 91, 0.94) 55%, rgba(5, 42, 62, 0.96));
            border-radius: 30px;
            padding: clamp(30px, 5vw, 62px);
            position: relative;
            overflow: hidden;
            border: 1px solid rgba(125, 159, 255, 0.24);
            box-shadow: 0 30px 70px rgba(0, 0, 0, 0.38);
        }

        .cta-block::before {
            content: "";
            position: absolute;
            top: -70px;
            right: -40px;
            width: 260px;
            height: 260px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(34, 211, 238, 0.23), transparent 65%);
            pointer-events: none;
        }

        .cta-block::after {
            content: "";
            position: absolute;
            left: -60px;
            bottom: -90px;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(139, 92, 246, 0.25), transparent 68%);
            pointer-events: none;
        }

        .cta-block .inner {
            position: relative;
            z-index: 1;
        }

        .cta-block h2 {
            color: #fff;
            font-size: clamp(25px, 3.4vw, 40px);
            font-weight: 700;
            margin-bottom: 15px;
            line-height: 1.4;
        }

        .cta-block p {
            color: rgba(238, 242, 255, 0.8);
            max-width: 600px;
            font-size: 1.05rem;
            margin-bottom: 0;
        }

        .cta-form {
            display: flex;
            flex-wrap: wrap;
            align-items: stretch;
            gap: 12px;
            margin-top: 26px;
        }

        .cta-form input {
            min-width: 260px;
            flex: 1 1 280px;
            background: rgba(6, 12, 24, 0.8);
            border: 1px solid rgba(255, 255, 255, 0.22);
            border-radius: 999px;
            padding: 14px 22px;
            color: #ffffff;
            font-size: 0.98rem;
            transition: border-color 0.25s ease, box-shadow 0.25s ease;
        }

        .cta-form input:focus {
            border-color: var(--cyan);
            box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.2);
            outline: none;
        }

        .cta-form input::placeholder {
            color: rgba(198, 211, 237, 0.55);
        }

        .cta-form .btn-primary-n {
            padding-left: 30px;
            padding-right: 30px;
        }

        .cta-small-note {
            font-size: 0.86rem;
            color: rgba(222, 230, 255, 0.62);
            margin-top: 24px;
            display: flex;
            align-items: center;
            gap: 7px;
        }

        .cta-small-note i {
            color: var(--warm);
        }

        .form-result {
            display: none;
            margin-top: 16px;
            padding: 12px 20px;
            border-radius: 14px;
            background: rgba(34, 211, 238, 0.1);
            border: 1px solid rgba(34, 211, 238, 0.34);
            color: #d3f7fb;
            font-size: 0.95rem;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #04070d;
            color: var(--text-body);
            border-top: 1px solid var(--border-light);
            position: relative;
        }

        .site-footer .footer-topline {
            height: 2px;
            background: linear-gradient(90deg, transparent 8%, rgba(139, 92, 246, 0.35) 50%, rgba(34, 211, 238, 0.25) 92%, transparent);
        }

        .site-footer .footer-brand {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 1.2rem;
            font-weight: 700;
            color: #eef4ff;
            margin-bottom: 12px;
        }

        .site-footer .footer-desc {
            font-size: 0.95rem;
            color: #8c97b4;
            line-height: 1.8;
            margin-top: 8px;
        }

        .site-footer .footer-social {
            display: flex;
            gap: 12px;
            margin-top: 18px;
        }

        .site-footer .footer-social a {
            display: inline-flex;
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.1);
            color: #99a6c4;
            transition: all 0.24s ease;
        }

        .site-footer .footer-social a:hover {
            color: #fff;
            border-color: var(--cyan);
            background: rgba(34, 211, 238, 0.1);
            box-shadow: 0 0 18px rgba(34, 211, 238, 0.2);
            transform: translateY(-3px);
        }

        .site-footer .footer-title {
            font-size: 1rem;
            color: #d7def3;
            font-weight: 600;
            margin-bottom: 19px;
            margin-top: 6px;
        }

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

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

        .site-footer .footer-links a {
            color: #7e8cb0;
            font-size: 0.94rem;
            position: relative;
            padding-left: 0;
            transition: padding-left 0.22s ease, color 0.22s ease;
        }

        .site-footer .footer-links a:hover {
            color: var(--cyan);
            padding-left: 6px;
        }

        .site-footer .footer-copyright {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding: 22px 0 26px;
            margin-top: 8px;
            text-align: center;
            color: #616c87;
            font-size: 0.87rem;
        }

        .site-footer .footer-copyright p {
            margin-bottom: 4px;
        }

        .site-footer .footer-copyright a {
            color: rgba(255, 255, 255, 0.38);
        }

        .site-footer .footer-copyright a:hover {
            color: var(--cyan);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 991.98px) {
            .container-x {
                padding-left: 22px;
                padding-right: 22px;
            }

            .site-nav {
                min-height: 68px;
            }

            .site-nav .container-x {
                min-height: 68px;
                padding-top: 6px;
                padding-bottom: 6px;
            }

            .site-nav .navbar-collapse {
                background: #0a101d;
                border: 1px solid var(--border-light);
                border-radius: 18px;
                padding: 16px 12px;
                margin-top: 12px;
                box-shadow: 0 24px 48px rgba(0, 0, 0, 0.45);
            }

            .site-nav .navbar-nav {
                gap: 6px;
            }

            .site-nav .nav-link.active {
                background: rgba(139, 92, 246, 0.2);
            }

            .site-nav .active::before {
                display: none;
            }

            .category-hero {
                min-height: auto;
                padding-top: calc(68px + 40px);
            }

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

            .step-card:last-child {
                grid-column: 1 / -1;
            }

            .nav-cta-wrapper {
                padding-left: 0;
            }
        }

        @media (max-width: 767.98px) {
            body {
                font-size: 15px;
            }

            .container-x {
                padding-right: 18px;
                padding-left: 18px;
            }

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

            .category-hero {
                padding-top: calc(68px + 28px);
                padding-bottom: 50px;
            }

            .hero-badge {
                font-size: 0.81rem;
                padding: 7px 12px;
            }

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

            .category-hero .btn-nova {
                width: 100%;
            }

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

            .spotlight-content {
                padding: 24px 22px;
            }

            .spotlight-media {
                min-height: 240px;
            }

            .bridge-card {
                padding: 24px 20px;
            }

            .steps-row {
                grid-template-columns: 1fr;
                gap: 18px;
            }

            .step-card:last-child {
                grid-column: auto;
            }

            .breadcrumb-nova {
                margin-bottom: 25px;
            }

            .faq-wrap .accordion-button {
                padding: 18px 18px 18px 20px;
                font-size: 0.96rem;
            }

            .faq-wrap .accordion-body {
                padding: 0 18px 24px 20px;
                font-size: 0.98rem;
            }

            .cta-block {
                border-radius: 22px;
                padding: 28px 20px;
            }

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

            .cta-form input {
                width: 100%;
                min-width: 0;
            }

            .cta-form .btn-primary-n {
                width: 100%;
            }

            .cta-small-note {
                align-items: flex-start;
            }

            .site-footer .footer-copyright {
                font-size: 0.82rem;
            }
        }

        @media (min-width: 768px) and (max-width: 991.98px) {
            .spotlight-media {
                min-height: 260px;
            }
        }

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