/* roulang page: index */
:root{
    --bg:#0E0A17;
    --surface:#181124;
    --surface-2:#201731;
    --primary:#7C3AED;
    --primary-light:#8B5CF6;
    --accent:#E11D74;
    --accent-dark:#C41063;
    --amber:#F59E0B;
    --text:#ECEAF2;
    --muted:#AEA7BC;
    --border:#2C2440;
    --input-bg:#2A2138;
    --input-border:#3A2E50;
    --radius-lg:20px;
    --radius-md:14px;
    --radius-pill:999px;
    --shadow-hover:0 10px 30px rgba(0,0,0,0.28);
    --font-cn:"PingFang SC","HarmonyOS Sans","Source Han Sans SC","Microsoft YaHei",sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
    margin:0;
    background:var(--bg);
    color:var(--text);
    font-family:var(--font-cn);
    font-size:16px;
    line-height:1.75;
    overflow-x:hidden;
    padding-bottom:80px;
}
a{color:var(--primary);text-decoration:none;transition:color .22s ease,background .22s ease,border-color .22s ease,box-shadow .22s ease}
a:hover{color:var(--primary-light)}
img{max-width:100%;display:block}
p{margin:0 0 1rem}
ul{list-style:none;margin:0;padding:0}
.container{max-width:1200px}
h1,h2,h3,h4,h5,.h1,.h2,.h3{font-weight:750;line-height:1.25;letter-spacing:.02em}
h2{font-size:clamp(28px,3.4vw,38px)}
h3{font-size:clamp(21px,2vw,26px)}
.section-pad{padding:clamp(64px,9vw,112px) 0}
.text-muted-2{color:var(--muted)!important}
.bg-surface{background:var(--surface)}

/* 按钮体系 */
.btn{
    --bs-btn-border-radius:var(--radius-pill);
    font-weight:600;
    font-family:inherit;
}
.btn-cta{
    display:inline-flex;align-items:center;justify-content:center;gap:.5rem;
    min-height:48px;padding:.65rem 1.9rem;
    background:var(--accent);color:#fff;border:1px solid transparent;
    border-radius:var(--radius-pill);font-weight:650;
    transition:all .22s ease;box-shadow:none;line-height:1.3;
}
.btn-cta:hover{
    background:var(--accent-dark);color:#fff;
    transform:translateY(-2px);
    box-shadow:0 12px 28px rgba(225,29,116,.28);
}
.btn-cta:active{background:var(--accent-dark);transform:scale(.98);box-shadow:none;color:#fff}
.btn-cta:focus{
    outline:3px solid rgba(124,58,237,.5);outline-offset:2px;box-shadow:none;
}
.btn-violet{
    display:inline-flex;align-items:center;justify-content:center;gap:.5rem;
    min-height:48px;padding:.65rem 1.75rem;
    background:var(--primary);color:#fff;border:1px solid transparent;
    border-radius:var(--radius-pill);font-weight:650;transition:all .22s ease;
}
.btn-violet:hover{background:var(--primary-light);color:#fff;transform:translateY(-2px);box-shadow:0 10px 24px rgba(124,58,237,.25)}
.btn-violet:active{transform:scale(.98);background:#6D28D9}
.btn-violet:focus{outline:3px solid rgba(124,58,237,.4);outline-offset:2px}
.btn-outline{
    display:inline-flex;align-items:center;justify-content:center;gap:.5rem;
    min-height:48px;padding:.65rem 1.75rem;
    background:transparent;color:var(--text);border:1px solid #5C4F7A;
    border-radius:var(--radius-pill);font-weight:600;transition:all .22s ease;
}
.btn-outline:hover{background:var(--surface-2);color:#fff;border-color:#7a6b9a;transform:translateY(-2px)}
.btn-outline:active{transform:scale(.98)}
.btn-outline:focus{outline:3px solid rgba(124,58,237,.35);outline-offset:2px}

/* 卡片 */
.card-surface{
    background:var(--surface);
    border:1px solid var(--border);
    border-radius:var(--radius-md);
    transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.card-surface:hover{
    border-color:rgba(124,58,237,.5);
    box-shadow:var(--shadow-hover),0 0 0 1px rgba(124,58,237,.25);
}
.card-title{font-weight:700}
.badge-soft{
    background:rgba(124,58,237,.15);
    border:1px solid rgba(124,58,237,.35);
    color:#B79AF6;
    font-weight:600;
    padding:.35em .85em;
    border-radius:var(--radius-pill);
    font-size:.85rem;
}
.badge-hot{
    background:rgba(245,159,11,.15);
    border:1px solid rgba(245,159,11,.35);
    color:#FBBF24;
    font-weight:600;
    border-radius:var(--radius-pill);
    font-size:.8rem;
}
.badge-accent{
    background:var(--accent);color:#fff;font-weight:600;
    border-radius:var(--radius-pill);padding:.3em .9em;
    font-size:.78rem;letter-spacing:.02em;border:none;
}
.ratio-frame{
    border-radius:var(--radius-md);overflow:hidden;
    background:linear-gradient(135deg,#2A1E3F,#151021);
    border:1px solid var(--border);position:relative;
}
.ratio-frame img{width:100%;height:100%;object-fit:cover}
.cover-gradient{position:relative}
.cover-gradient::after{
    content:"";position:absolute;inset:0;
    background:linear-gradient(to top,rgba(14,10,23,.75),rgba(14,10,23,.05) 50%);
    border-radius:inherit;pointer-events:none;
}

/* header */
.site-header{
    position:sticky;top:0;z-index:1080;
    background:rgba(14,10,23,.66);
    backdrop-filter:blur(18px);
    -webkit-backdrop-filter:blur(18px);
    border-bottom:1px solid rgba(44,36,64,.7);
}
.header-grid{
    display:grid;grid-template-columns:1fr auto 1fr;align-items:center;
    min-height:78px;gap:1rem;
}
.brand{
    display:flex;flex-direction:column;align-items:center;text-align:center;
    line-height:1.15;padding:6px 4px;
}
.brand-word{
    font-size:1.46rem;font-weight:900;letter-spacing:.01em;
    color:#fff;background:linear-gradient(90deg,#ffffff,#C4B5FD);
    -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
}
.brand-sub{
    font-size:.74rem;color:#8B7E9C;letter-spacing:.16em;
    margin-top:3px;font-weight:500;
}
.nav-panel{display:flex;align-items:center;gap:.25rem}
.nav-panel.left{justify-content:flex-start}
.nav-panel.right{justify-content:flex-end}
.nav-panel a{
    color:#CFC6DE;font-weight:500;font-size:.94rem;
    padding:.5rem .8rem;border-radius:var(--radius-pill);position:relative;white-space:nowrap;
}
.nav-panel a:hover{
    color:#fff;background:rgba(124,58,237,.15);
}
.nav-panel a.is-active{
    color:#fff;
}
.nav-panel a.is-active::after{
    content:"";position:absolute;left:50%;transform:translateX(-50%);
    bottom:2px;height:2px;width:22px;border-radius:2px;
    background:var(--primary);
}
.nav-panel a i{margin-right:4px;font-size:.85rem;opacity:.8}
.mobile-bar{
    display:none;align-items:center;justify-content:space-between;
    min-height:66px;padding:0 0;
}
.mobile-bar .brand{flex-direction:row;gap:.35rem}
.mobile-menu{
    background:var(--surface);
    border-top:1px solid var(--border);
    padding:.5rem 1rem 1.25rem;
}
.mobile-menu a{
    display:block;padding:14px 8px;font-size:1.05rem;
    color:#E5E0EF;border-bottom:1px solid rgba(44,36,64,.55);
    min-height:44px;border-radius:8px;
}
.mobile-menu a i{width:28px;color:var(--primary-light);font-size:.9rem}
.mobile-menu a:hover{color:#fff;background:rgba(124,58,237,.1)}
.mobile-toggle{
    width:46px;height:46px;display:inline-flex;align-items:center;justify-content:center;
    background:transparent;border:1px solid var(--border);
    border-radius:12px;color:#fff;font-size:1.2rem;
    transition:background .2s ease;cursor:pointer;
}
.mobile-toggle:hover{background:var(--surface-2)}

/* hero */
.hero{
    position:relative;min-height:640px;display:flex;align-items:center;
    padding:88px 0 50px;
    background:url('/assets/images/backpic/back-1.jpg') center center / cover no-repeat;
    isolation:isolate;
}
.hero::before{
    content:"";position:absolute;inset:0;z-index:-1;
    background:linear-gradient(120deg,rgba(14,10,17,.94) 30%,rgba(22,16,38,.72) 66%,rgba(124,58,237,.18) 100%);
}
.hero::after{
    content:"";position:absolute;inset:auto -10% -25% 20%;z-index:0;pointer-events:none;
    background:radial-gradient(circle,rgba(124,58,237,.35),transparent 65%);
}
.hero .container{position:relative;z-index:2}
.hero-card{
    max-width:760px;padding:34px 30px;
    background:rgba(24,17,36,.42);
    border:1px solid rgba(124,58,237,.22);
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px);
    border-radius:var(--radius-lg);
}
.hero-badge{
    display:inline-flex;align-items:center;gap:.45rem;
    background:rgba(245,159,11,.14);
    border:1px solid rgba(245,159,11,.3);
    color:#FCD34D;border-radius:var(--radius-pill);
    padding:.42rem 1.05rem;font-size:.86rem;font-weight:600;margin-bottom:20px;
}
.hero h1{font-size:clamp(31px,4.6vw,50px);font-weight:850;color:#fff;margin-bottom:16px}
.hero-desc{font-size:1.06rem;color:#D3CBDD;max-width:640px;margin-bottom:26px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px}
.hero-perks{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:6px}
.hero-perks span{display:inline-flex;align-items:center;gap:.4rem;color:#C3B7D6;font-size:.9rem}
.hero-perks i{color:var(--amber);font-size:.85rem}
.hero-metrics{
    display:flex;flex-wrap:wrap;gap:18px 34px;margin-top:34px;
    padding-top:22px;border-top:1px solid rgba(255,255,255,.1);
}
.metric-item .metric-num{font-size:1.78rem;font-weight:800;color:#fff;line-height:1.2}
.metric-item .metric-name{font-size:.88rem;color:#AFA3C2;margin-top:2px}

/* section headers */
.sec-head{margin-bottom:42px}
.sec-eyebrow{
    display:inline-flex;align-items:center;gap:.4rem;font-size:.84rem;
    color:#A78BFA;background:rgba(124,58,237,.12);
    border:1px solid rgba(124,58,237,.3);
    padding:.3rem 1rem;border-radius:var(--radius-pill);margin-bottom:18px;font-weight:600;
}
.sec-title{max-width:820px;margin-bottom:14px}
.sec-sub{color:var(--muted);font-size:1rem;max-width:700px;line-height:1.75}

/* 最新动态 timeline */
.timeline-wrap{
    background:var(--surface);
    border:1px solid var(--border);
    border-radius:var(--radius-lg);
    padding:clamp(28px,4vw,48px);
}
.timeline-item{
    position:relative;padding:0 0 28px 38px;
    border-left:1px solid rgba(124,58,237,.3);
}
.timeline-item:last-child{padding-bottom:4px}
.timeline-item::before{
    content:"";position:absolute;left:-8px;top:4px;width:15px;height:15px;
    border-radius:50%;background:var(--primary);box-shadow:0 0 0 5px rgba(124,58,237,.18);
}
.timeline-item::after{
    content:"";position:absolute;right:16px;top:8px;color:#5F5470;
}
.timeline-item .tag-ver{
    display:inline-block;background:rgba(245,159,11,.15);color:#FBBF24;
    border-radius:var(--radius-pill);padding:.2rem .85rem;
    font-size:.8rem;font-weight:600;margin-bottom:9px;
}
.timeline-item h4{font-size:1.14rem;margin-bottom:5px}
.timeline-item p{color:var(--muted);font-size:.95rem;margin-bottom:0;max-width:720px}

/* features 2+1 */
.feature-card-large{
    padding:clamp(24px,3vw,38px);height:100%;
    background:var(--surface);border:1px solid var(--border);
    border-radius:var(--radius-lg);
    transition:border-color .25s ease,box-shadow .25s ease,transform .25s ease;
    overflow:hidden;position:relative;
}
.feature-card-large:hover{
    border-color:rgba(124,58,237,.5);
    box-shadow:var(--shadow-hover);
}
.feature-icon{
    width:58px;height:58px;border-radius:18px;
    display:flex;align-items:center;justify-content:center;
    font-size:1.55rem;margin-bottom:20px;
}
.icon-purple{background:rgba(124,58,237,.16);color:#A78BFA;border:1px solid rgba(124,58,237,.25)}
.icon-pink{background:rgba(225,29,116,.14);color:#F472B6;border:1px solid rgba(225,29,116,.28)}
.icon-amber{background:rgba(245,159,11,.15);color:#FBBF24;border:1px solid rgba(245,159,11,.25)}
.feature-card-large h3{font-size:1.34rem;margin-bottom:10px}
.feature-card-large p{color:var(--muted);font-size:.98rem}
.feature-list{margin-top:16px}
.feature-list li{
    display:flex;gap:.7rem;align-items:flex-start;
    color:#CCC4DA;font-size:.95rem;margin-bottom:12px;
}
.feature-list li i{color:var(--amber);margin-top:7px;font-size:.5rem}
.banner-wide{
    background:linear-gradient(125deg,#1A1029,#251A3E 45%,#2B0F2A);
    border:1px solid rgba(124,58,237,.32);
    border-radius:var(--radius-lg);
    padding:clamp(20px,3vw,40px);
    display:flex;flex-wrap:wrap;align-items:center;gap:24px;
    position:relative;overflow:hidden;
}
.banner-wide::after{
    content:"�泛";display:none;
}
.banner-text{flex:1 1 260px;min-width:220px}
.banner-text h3{font-size:1.6rem;margin-bottom:8px}
.banner-text p{color:var(--muted);font-size:.96rem;margin-bottom:0;max-width:600px}
.banner-media{flex:1 1 260px;min-width:200px;max-width:380px;margin-left:auto}

/* guide */
.guide-wrap{
    background:linear-gradient(120deg,rgba(124,58,237,.08),rgba(225,29,116,.03));
    border:1px solid rgba(124,58,237,.2);
    border-radius:var(--radius-lg);padding:clamp(24px,4vw,50px);
}
.browser-window{
    background:#22192F;border:1px solid var(--border);
    border-radius:var(--radius-lg);overflow:hidden;
    box-shadow:0 20px 50px rgba(0,0,0,.4);position:relative;
}
.browser-bar{
    display:flex;align-items:center;gap:8px;padding:.7rem 1rem;
    background:#2A2138;border-bottom:1px solid var(--border);
}
.browser-bar span{width:12px;height:12px;border-radius:50%;display:inline-block}
.browser-bar .b-red{background:#E11D74}
.browser-bar .b-yellow{background:#F59E0B}
.browser-bar .b-green{background:#22C55E}
.browser-url{
    flex:1;background:#171120;color:#AEA7BC;font-size:.8rem;
    border-radius:8px;padding:.3rem .9rem;margin-left:8px;
    white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
    border:1px solid var(--border);
}
.browser-body .main-shot{
    width:100%;height:auto;max-height:300px;object-fit:cover;display:block;
}
.float-chip{
    position:absolute;background:var(--surface);border:1px solid rgba(124,58,237,.5);
    border-radius:14px;padding:10px 18px;display:flex;align-items:center;gap:.6rem;
    box-shadow:0 12px 30px rgba(0,0,0,.4);font-size:.88rem;
    backdrop-filter:blur(10px);
}
.chip-top{top:-17px;right:24px;color:#C4B5FD}
.chip-bottom{bottom:-20px;left:24px}
.chip-bottom i{color:var(--amber);font-size:1rem}
.list-check li{
    display:flex;gap:.8rem;align-items:flex-start;
    margin-bottom:.9rem;color:#CFC6DE;font-size:.97rem;
}
.list-check li i{
    color:var(--primary-light);font-size:1.05rem;margin-top:3px;width:20px;text-align:center;
}
.tip-strip{
    margin-top:34px;display:flex;flex-wrap:wrap;gap:12px 20px;
    background:rgba(24,17,36,.55);
    padding:14px 18px;border-radius:14px;
    border:1px dashed rgba(124,58,237,.25);
}
.tip-strip span{display:inline-flex;align-items:center;gap:.45rem;font-size:.88rem;color:var(--muted)}
.tip-strip i{color:var(--amber);font-size:.9rem}

/* topics 卡片 */
.story-card{
    border-radius:var(--radius-lg);overflow:hidden;
    background:var(--surface);border:1px solid var(--border);
    transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;height:100%;
    display:flex;flex-direction:column;
}
.story-card:hover{border-color:rgba(124,58,237,.55);transform:translateY(-4px);box-shadow:0 16px 38px rgba(0,0,0,.32)}
.story-cover{position:relative;aspect-ratio:16/9;overflow:hidden}
.story-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.story-card:hover .story-cover img{transform:scale(1.04)}
.story-cover .corner-badge{
    position:absolute;top:12px;left:12px;z-index:2;
    background:rgba(245,159,11,.9);color:#171014;border-radius:var(--radius-pill);
    padding:.24rem .8rem;font-size:.75rem;font-weight:700;border:none;
}
.story-body{padding:20px 22px 24px;display:flex;flex-direction:column;flex:1}
.story-body h4{font-size:1.13rem;font-weight:700;margin-bottom:8px}
.story-body h4 a{color:#EDE8F5}
.story-body h4 a:hover{color:#B79AF6}
.story-body p{color:var(--muted);font-size:.9rem;flex:1}
.story-meta{display:flex;gap:.8rem 1rem;flex-wrap:wrap;align-items:center;color:#8B7E9C;font-size:.82rem;padding-top:14px;border-top:1px solid rgba(44,36,64,.65)}
.story-meta span{display:inline-flex;align-items:center;gap:.4rem}
.vertical-list-item{
    padding:18px 4px;border-bottom:1px solid rgba(44,36,64,.6);
    display:flex;gap:18px;align-items:flex-start;transition:background .2s ease;
}
.vertical-list-item:last-child{border-bottom:0}
.vertical-list-item:hover{background:rgba(124,58,237,.04)}
.vertical-list-item .vtime{
    color:var(--muted);font-family:"Manrope","Inter",sans-serif;
    font-size:.9rem;flex-shrink:0;margin-top:3px;min-width:52px;
}
.vertical-list-item a{color:#E7E1F0;font-weight:600;font-size:1rem;line-height:1.5}
.vertical-list-item a:hover{color:#A78BFA}

/* security */
.security-grid{
    display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:24px;
}
.security-card{
    background:var(--surface);border:1px solid var(--border);
    border-radius:var(--radius-lg);padding:26px 24px;
    transition:border-color .25s ease,background .25s ease,transform .25s ease;
}
.security-card:hover{background:var(--surface-2);border-color:rgba(124,58,237,.45);transform:translateY(-5px)}
.security-icon-wrap{
    width:46px;height:46px;border-radius:12px;display:flex;align-items:center;justify-content:center;
    background:rgba(124,58,237,.15);color:#B79AF6;font-size:1.2rem;margin-bottom:16px;
}
.security-card h3{font-size:1.1rem;margin-bottom:8px}
.security-card p{font-size:.9rem;color:var(--muted);margin:0}

/* social proof */
.social-proof{padding:clamp(40px,5vw,60px) 0;position:relative}
.social-proof::before{
    content:"";position:absolute;inset:auto 8% -10% 8%;background:rgba(124,58,237,.12);
    filter:blur(70px);height:260px;z-index:-1;
}
.score-box{
    background:var(--surface);border:1px solid rgba(245,159,11,.2);
    border-radius:var(--radius-lg);padding:22px 26px;max-width:420px;
}
.score-stars{color:var(--amber);font-size:1.3rem;letter-spacing:4px}
.score-num{font-size:2rem;font-weight:800;color:#fff}
.testimonial-grid{
    display:grid;grid-template-columns:repeat(12,1fr);gap:20px;
    margin-top:40px;
}
.testimonial-card{
    background:var(--surface);border:1px solid var(--border);
    border-radius:var(--radius-lg);padding:24px;
    transition:border-color .22s ease,box-shadow .22s ease;
}
.testimonial-card:hover{border-color:rgba(124,58,237,.4);box-shadow:var(--shadow-hover)}
.testimonial-card .quote{font-size:1rem;color:#DED6E8;line-height:1.8;margin-bottom:16px}
.testimonial-card .quote i{color:var(--accent);opacity:.65;margin-right:6px;font-size:1.2rem}
.testimonial-card .author{
    display:flex;align-items:center;gap:12px;color:var(--muted);
    font-size:.85rem;
}
.testimonial-card .author .avatar{
    width:42px;height:42px;border-radius:12px;
    display:flex;align-items:center;justify-content:center;
    background:linear-gradient(135deg,rgba(124,58,237,.3),rgba(225,29,116,.2));
    color:#fff;font-size:1.1rem;font-weight:700;
}

/* faq */
.faq-panel-wrap{max-width:760px;margin:0 auto}
.accordion-item{
    background:var(--surface);border:1px solid var(--border);
    border-radius:16px!important;margin-bottom:16px;overflow:hidden;
}
.accordion-button{
    background:var(--surface);color:var(--text);font-weight:650;
    font-size:1.02rem;border-radius:16px;padding:18px 22px;
    box-shadow:none!important;
}
.accordion-button:not(.collapsed){
    background:var(--surface);color:#fff;border-bottom:1px solid rgba(124,58,237,.3);
}
.accordion-button:hover{background:var(--surface-2)}
.accordion-button:not(.collapsed)::after{
    background-image:url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23B79AF6'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
}
.accordion-button::after{
    background-image:url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%238B7E9C'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
    background-size:16px;
}
.accordion-body{background:var(--surface);color:var(--muted);padding:16px 22px 22px;font-size:.96rem}
.accordion-body a{color:var(--primary-light);text-decoration:underline}

/* info-cta panel */
.download-panel{
    position:relative;background:url('/assets/images/backpic/back-2.jpg') center center / cover no-repeat;
    border-radius:var(--radius-lg);overflow:hidden;
    box-shadow:0 18px 48px rgba(0,0,0,.4);padding:clamp(36px,6vw,70px);
}
.download-panel::before{
    content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(14,10,17,.94),rgba(24,17,36,.78) 55%,rgba(124,58,237,.18));
}
.download-panel>*{position:relative;z-index:2}
.download-panel h2{font-size:clamp(28px,4vw,40px)}
.feedback-form .form-control{
    background:var(--input-bg);border:1px solid var(--input-border);
    color:var(--text);border-radius:14px;min-height:52px;
    font-size:.94rem;
}
.feedback-form .form-control:focus{
    background:var(--input-bg);border-color:var(--primary);
    box-shadow:0 0 0 4px rgba(124,58,237,.2);color:#fff;
}
.feedback-form .form-control::placeholder{color:#7B718C}
.feedback-form textarea.form-control{min-height:110px}

/* footer */
.site-footer{
    background:#120D1E;border-top:1px solid rgba(44,36,64,.8);
    padding-top:56px;margin-top:60px;
}
.footer-row{display:grid;grid-template-columns:1.4fr .8fr 1fr;gap:40px}
.footer-brand-name{font-size:1.4rem;font-weight:800;color:#fff}
.footer-desc{color:var(--muted);font-size:.9rem;max-width:360px;line-height:1.8}
.footer-links{display:flex;flex-direction:column;gap:2px}
.footer-links a,.foot-nav a{
    color:#B6AEC6;padding:6px 0;font-size:.92rem;
    display:inline-block;transition:all .2s ease;border-radius:6px;
}
.footer-links a:hover,.foot-nav a:hover{color:#fff;text-decoration:none}
.footer-title{font-size:1rem;font-weight:700;color:#fff;margin-bottom:16px}
.footer-bottom{
    border-top:1px solid rgba(44,36,64,.65);margin-top:40px;
    padding:18px 0;display:flex;flex-wrap:wrap;gap:8px 24px;
    align-items:center;justify-content:space-between;
    color:#6E647F;font-size:.84rem;
}
.footer-bottom .domain{font-family:Menlo,Consolas,monospace;color:#8B7E9C;letter-spacing:.02em}

/* sticky bar */
.sticky-bar{
    position:fixed;left:0;right:0;bottom:0;z-index:1070;
    background:#181124;border-top:1px solid rgba(124,58,237,.6);
    padding:10px 0;animation:stickyIn .4s ease;
}
@keyframes stickyIn{from{transform:translateY(100%);opacity:0}to{transform:none;opacity:1}}
.sticky-inner{display:flex;align-items:center;justify-content:space-between;gap:16px}
.sticky-copy{display:flex;align-items:center;gap:.8rem}
.sticky-copy i{color:var(--amber);font-size:1.4rem}
.sticky-copy .s-title{font-weight:700;font-size:.98rem;color:#fff}
.sticky-copy .s-desc{color:#9A91A8;font-size:.82rem}
.sticky-close{
    width:40px;height:40px;border-radius:50%;
    border:1px solid var(--border);background:transparent;
    color:#9A91A8;display:inline-flex;align-items:center;justify-content:center;
    cursor:pointer;transition:all .2s ease;flex-shrink:0;
}
.sticky-close:hover{background:var(--surface-2);color:#fff;border-color:var(--primary)}

a[aria-label] {position:relative}
/* custom list icon reset */
ul.flush{margin:0;padding:0;list-style:none}

/* respond */
@media (max-width:991.98px){
    .header-grid{display:none}
    .mobile-bar{display:flex}
    .hero{min-height:560px;padding-top:70px 0 44px}
    .hero-card{padding:30px 24px}
    .footer-row{grid-template-columns:1fr 1fr;gap:32px}
    .footer-row .footer-desc{max-width:100%}
}
@media (max-width:767.98px){
    .section-pad{padding-top:52px;padding-bottom:52px}
    .hero{padding-top:58px;padding-bottom:36px;background-position:65% center}
    .hero h1{font-size:2.05rem}
    .hero-desc{font-size:.98rem;line-height:1.7}
    .hero-actions .btn{width:100%;justify-content:center}
    .hero-perks{gap:8px 14px;font-size:.85rem}
    .banner-wide{border-radius:16px}
    .feature-card-large{padding:24px}
    .security-grid{gap:16px;grid-template-columns:1fr}
    .testimonial-grid{grid-template-columns:1fr}
    .download-panel{border-radius:18px;padding:32px 22px}
    .download-panel .btn{width:100%}
    .sticky-copy .s-desc{display:none}
    .sticky-inner .btn-cta,.sticky-inner .btn-violet{min-height:42px;font-size:.88rem;padding:.45rem 1.2rem;width:auto}
    .sticky-bar{padding:8px 0}
    .footer-row{grid-template-columns:1fr}
}
@media (max-width:575.98px){
    body{padding-bottom:76px}
    .mobile-toggle{width:44px;height:44px}
    .brand-word{font-size:1.2rem}
    .hero-card{border-radius:18px;padding:22px 18px}
    .hero-metrics{gap:14px 22px}
    .metric-item .metric-num{font-size:1.5rem}
    .timeline-wrap{padding:20px 18px}
    .timeline-item{padding-left:22px}
    .vertical-list-item .vtime{min-width:0;display:block;font-size:.78rem;margin-bottom:4px}
    .vertical-list-item{flex-direction:column;gap:2px}
}

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --bg: #0E0A17;
            --surface: #181124;
            --surface-2: #201731;
            --primary: #7C3AED;
            --primary-light: #8B5CF6;
            --accent: #E11D74;
            --accent-dark: #C41063;
            --amber: #F59E0B;
            --text: #ECEAF2;
            --muted: #AEA7BC;
            --border: #2C2440;
            --input-bg: #2A2138;
            --input-border: #3A2E50;
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-pill: 999px;
            --shadow-hover: 0 10px 30px rgba(0, 0, 0, .28);
            --font-cn: "PingFang SC", "HarmonyOS Sans", "Source Han Sans SC", "Microsoft YaHei", sans-serif;
        }

        /* ===== 基础 reset ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            margin: 0;
            background: var(--bg);
            color: var(--text);
            font-family: var(--font-cn);
            font-size: 16px;
            line-height: 1.75;
            overflow-x: hidden;
            padding-bottom: 0;
        }
        body.modal-open,
        body.noscroll {
            overflow: hidden;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 800;
            line-height: 1.3;
            color: #fff;
            margin: 0 0 .35em;
        }
        p {
            margin-bottom: 1rem;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color .22s ease, background .22s ease, border-color .22s ease, box-shadow .22s ease;
        }
        a:hover {
            color: var(--primary-light);
        }
        img {
            max-width: 100%;
            display: block;
        }
        ul {
            padding: 0;
            margin: 0;
            list-style: none;
        }
        .container {
            max-width: 1200px;
        }
        .section-pad {
            padding: clamp(64px, 9vw, 112px) 0;
        }
        .text-muted-2 {
            color: var(--muted) !important;
        }

        /* ===== 通用容器 ===== */
        .wrap-box {
            border: 1px solid var(--border);
            background: var(--surface);
            border-radius: var(--radius-lg);
        }

        /* ===== 按钮体系 ===== */
        .btn {
            --bs-btn-border-radius: var(--radius-pill);
            font-weight: 600;
            font-family: inherit;
        }
        .btn-cta {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: .5rem;
            min-height: 48px;
            padding: .65rem 1.9rem;
            background: var(--accent);
            color: #fff;
            border: 1px solid transparent;
            border-radius: var(--radius-pill);
            font-weight: 650;
            transition: all .22s ease;
            line-height: 1.3;
            box-shadow: none;
        }
        .btn-cta:hover {
            background: var(--accent-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 12px 28px rgba(225, 29, 116, .28);
        }
        .btn-cta:active {
            background: var(--accent-dark);
            transform: scale(.98);
            box-shadow: none;
            color: #fff;
        }
        .btn-cta:focus {
            outline: 3px solid rgba(124, 58, 237, .5);
            outline-offset: 2px;
            box-shadow: none;
        }
        .btn-violet {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: .5rem;
            min-height: 48px;
            padding: .65rem 1.75rem;
            background: var(--primary);
            color: #fff;
            border: 1px solid transparent;
            border-radius: var(--radius-pill);
            font-weight: 650;
            transition: all .22s ease;
        }
        .btn-violet:hover {
            background: var(--primary-light);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 10px 24px rgba(124, 58, 237, .25);
        }
        .btn-violet:active {
            transform: scale(.98);
            background: #6D28D9;
        }
        .btn-violet:focus {
            outline: 3px solid rgba(124, 58, 237, .4);
            outline-offset: 2px;
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: .5rem;
            min-height: 48px;
            padding: .65rem 1.75rem;
            background: transparent;
            color: var(--text);
            border: 1px solid #5C4F7A;
            border-radius: var(--radius-pill);
            font-weight: 600;
            transition: all .22s ease;
        }
        .btn-outline:hover {
            background: var(--surface-2);
            color: #fff;
            border-color: #7a6b9a;
            transform: translateY(-2px);
        }
        .btn-outline:active {
            transform: scale(.98);
        }
        .btn-outline:focus {
            outline: 3px solid rgba(124, 58, 237, .35);
            outline-offset: 2px;
        }

        /* ===== 卡片 / 徽章 ===== */
        .card-surface {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
        }
        .card-surface:hover {
            border-color: rgba(124, 58, 237, .5);
            box-shadow: var(--shadow-hover), 0 0 0 1px rgba(124, 58, 237, .25);
        }
        .badge-soft {
            background: rgba(124, 58, 237, .15);
            border: 1px solid rgba(124, 58, 237, .35);
            color: #B79AF6;
            font-weight: 600;
            padding: .35em .85em;
            border-radius: var(--radius-pill);
            font-size: .85rem;
            display: inline-block;
        }
        .badge-hot {
            background: rgba(245, 159, 11, .15);
            border: 1px solid rgba(245, 159, 11, .35);
            color: #FBBF24;
            font-weight: 600;
            border-radius: var(--radius-pill);
            font-size: .8rem;
            display: inline-block;
            padding: .2em .8em;
        }
        .badge-accent {
            background: var(--accent);
            color: #fff;
            font-weight: 600;
            border-radius: var(--radius-pill);
            padding: .3em 1em;
            font-size: .8rem;
            letter-spacing: .02em;
            border: none;
            display: inline-block;
        }
        .sec-title {
            font-size: clamp(28px, 4vw, 40px);
            font-weight: 850;
        }
        .sec-lead {
            color: var(--muted);
            font-size: 1.02rem;
            max-width: 720px;
        }

        /* ===== 顶部导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1080;
            background: rgba(14, 10, 23, .72);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(44, 36, 64, .75);
        }
        .header-grid {
            display: grid;
            grid-template-columns: 1fr auto 1fr;
            align-items: center;
            min-height: 78px;
            gap: 1rem;
        }
        .brand {
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
            line-height: 1.15;
            padding: 6px 4px;
        }
        .brand-word {
            font-size: 1.46rem;
            font-weight: 900;
            letter-spacing: .01em;
            color: #fff;
            background: linear-gradient(90deg, #ffffff, #C4B5FD);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .brand-sub {
            font-size: .74rem;
            color: #8B7E9C;
            letter-spacing: .16em;
            margin-top: 3px;
            font-weight: 500;
        }
        .nav-panel {
            display: flex;
            align-items: center;
            gap: .25rem;
        }
        .nav-panel.left {
            justify-content: flex-start;
        }
        .nav-panel.right {
            justify-content: flex-end;
        }
        .nav-panel a {
            color: #CFC6DE;
            font-weight: 500;
            font-size: .94rem;
            padding: .5rem .8rem;
            border-radius: var(--radius-pill);
            position: relative;
            white-space: nowrap;
        }
        .nav-panel a:hover {
            color: #fff;
            background: rgba(124, 58, 237, .15);
        }
        .nav-panel a.is-active {
            color: #fff;
        }
        .nav-panel a.is-active::after {
            content: "";
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
            bottom: 2px;
            height: 2px;
            width: 22px;
            border-radius: 2px;
            background: var(--primary);
        }
        .nav-panel a i {
            margin-right: 4px;
            font-size: .85rem;
            opacity: .8;
        }
        .mobile-bar {
            display: none;
            align-items: center;
            justify-content: space-between;
            min-height: 64px;
        }
        .mobile-bar .brand {
            flex-direction: row;
            gap: .35rem;
        }
        .mobile-menu {
            background: var(--surface);
            border-top: 1px solid var(--border);
            padding: .5rem 1rem 1.25rem;
        }
        .mobile-menu a {
            display: block;
            padding: 14px 8px;
            font-size: 1.05rem;
            color: #E5E0EF;
            border-bottom: 1px solid rgba(44, 36, 64, .55);
            min-height: 44px;
            border-radius: 8px;
        }
        .mobile-menu a i {
            width: 28px;
            color: var(--primary-light);
            font-size: .9rem;
        }
        .mobile-menu a:hover {
            color: #fff;
            background: rgba(124, 58, 237, .1);
        }
        .mobile-toggle {
            width: 46px;
            height: 46px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: transparent;
            border: 1px solid var(--border);
            border-radius: 12px;
            color: #fff;
            font-size: 1.2rem;
            transition: background .2s ease;
            cursor: pointer;
        }
        .mobile-toggle:hover {
            background: var(--surface-2);
        }

        /* ===== 分类页 Masthead ===== */
        .subpage-masthead {
            position: relative;
            padding: 74px 0 48px;
            background:
                linear-gradient(rgba(14, 10, 23, .78), rgba(14, 10, 23, .9)),
                url('/assets/images/backpic/back-1.jpg') center/cover no-repeat;
            border-bottom: 1px solid var(--border);
        }
        .crumb-line {
            font-size: .9rem;
            color: var(--muted);
            margin-bottom: 22px;
            display: flex;
            flex-wrap: wrap;
            gap: 6px 10px;
        }
        .crumb-line a {
            color: #B79AF6;
        }
        .crumb-line .sep {
            color: #574E68;
        }
        .subpage-masthead h1 {
            font-size: clamp(30px, 4.5vw, 48px);
            font-weight: 900;
            margin-bottom: .45em;
            max-width: 800px;
        }
        .masthead-desc {
            color: #CFC6DE;
            font-size: 1.05rem;
            max-width: 780px;
            margin-bottom: 28px;
        }
        .kpi-row {
            display: flex;
            flex-wrap: wrap;
            gap: 18px 34px;
            padding: 16px 0 0;
            border-top: 1px solid rgba(44, 36, 64, .8);
            margin-top: 20px;
        }
        .kpi-item {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }
        .kpi-num {
            font-size: 1.5rem;
            font-weight: 800;
            color: #fff;
        }
        .kpi-label {
            font-size: .86rem;
            color: var(--muted);
        }

        /* ===== 筛选标签 ===== */
        .filter-tabs-wrap {
            padding: 38px 0 10px;
        }
        .filter-tabs {
            display: flex;
            flex-wrap: wrap;
            gap: 10px 12px;
            align-items: center;
        }
        .filter-tab {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-height: 40px;
            padding: .35rem 1.35rem;
            border-radius: var(--radius-pill);
            border: 1px solid var(--border);
            background: var(--surface);
            color: var(--muted);
            font-size: .93rem;
            font-weight: 600;
            cursor: pointer;
            user-select: none;
            transition: all .22s ease;
        }
        .filter-tab i {
            margin-right: 6px;
            opacity: .75;
            font-size: .88rem;
        }
        .filter-tab:hover {
            border-color: #5C4F7A;
            background: var(--surface-2);
            color: #fff;
        }
        .filter-tab.active {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
            box-shadow: 0 6px 18px rgba(124, 58, 237, .3);
        }
        .filter-tab .count {
            background: rgba(255, 255, 255, .14);
            border-radius: 999px;
            padding: 0 8px;
            margin-left: 6px;
            font-size: .78rem;
        }

        /* ===== 大精选卡片 ===== */
        .featured-wrap {
            margin-top: 26px;
        }
        .feature-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: box-shadow .3s ease, border-color .3s ease;
        }
        .feature-card:hover {
            border-color: rgba(124, 58, 237, .5);
            box-shadow: var(--shadow-hover), 0 0 0 1px rgba(124, 58, 237, .2);
        }
        .feature-card .fgrid {
            display: grid;
            grid-template-columns: 1.02fr .98fr;
            min-height: 0;
        }
        .feature-card .fthumb {
            position: relative;
            min-height: 260px;
            background: var(--surface-2);
        }
        .feature-card .fthumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            position: absolute;
            inset: 0;
        }
        .feature-card .fbody {
            padding: 30px 34px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: flex-start;
        }
        .feature-card .fbody h2 {
            font-size: 1.7rem;
            font-weight: 850;
            margin: 14px 0 12px;
        }
        .feature-card .fbody p {
            color: #C3BBD4;
            font-size: .97rem;
            margin-bottom: 14px;
            max-width: 480px;
        }
        .feature-points {
            display: flex;
            flex-direction: column;
            gap: 8px;
            margin: 6px 0 18px;
        }
        .feature-points li {
            display: flex;
            align-items: flex-start;
            gap: 8px;
            color: #CFC6DE;
            font-size: .92rem;
        }
        .feature-points li i {
            color: var(--amber);
            font-size: .9rem;
            margin-top: .12em;
        }

        /* ===== 瀑布功能卡 ===== */
        .waterfall-section {
            padding: 44px 0 12px;
        }
        .waterfall {
            display: flex;
            flex-wrap: wrap;
            align-items: flex-start;
            gap: 24px;
        }
        .media-card {
            flex: 0 0 calc(33.333% - 16px);
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            overflow: hidden;
            display: flex;
            flex-direction: column;
            transition: transform .25s ease, border-color .3s ease, box-shadow .25s ease;
        }
        .media-card:hover {
            transform: translateY(-4px);
            border-color: rgba(124, 58, 237, .55);
            box-shadow: var(--shadow-hover), 0 0 0 1px rgba(124, 58, 237, .2);
        }
        .media-card .card-thumb {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 10;
            background: var(--surface-2);
        }
        .media-card .card-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .media-card .card-thumb::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(14, 10, 23, .35), transparent 45%);
            pointer-events: none;
        }
        .card-tag-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            z-index: 2;
            background: var(--accent);
            color: #fff;
            font-size: .76rem;
            font-weight: 650;
            padding: .2rem .8rem;
            border-radius: 999px;
            letter-spacing: .02em;
        }
        .card-tag-badge.soft {
            background: rgba(124, 58, 237, .88);
        }
        .card-body-content {
            padding: 20px 22px 22px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .card-meta {
            font-size: .8rem;
            color: #817898;
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 10px;
            line-height: 1.2;
        }
        .card-meta i {
            color: var(--primary-light);
        }
        .media-card h3 {
            font-size: 1.16rem;
            font-weight: 750;
            margin-bottom: 8px;
            color: #fff;
            line-height: 1.4;
        }
        .media-card .card-body-content p {
            color: #BFB6CF;
            font-size: .9rem;
            line-height: 1.7;
            flex: 1;
            margin-bottom: 14px;
        }
        .media-card .action-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            border-top: 1px solid rgba(44, 36, 64, .7);
            padding-top: 12px;
            margin-top: auto;
        }
        .text-link {
            color: #B79AF6;
            font-size: .88rem;
            font-weight: 600;
        }
        .text-link:hover {
            color: #fff;
        }
        .text-link i {
            font-size: .8rem;
            margin-left: 3px;
        }
        .like-count {
            color: #786E8B;
            font-size: .8rem;
        }
        .like-count i {
            margin-right: 4px;
        }

        /* ===== 分组行：宽卡 + 双窄卡 ===== */
        .group-section {
            padding: 38px 0 12px;
        }
        .wide-spot {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            margin-bottom: 24px;
            transition: box-shadow .25s ease, border-color .25s ease;
        }
        .wide-spot:hover {
            border-color: rgba(124, 58, 237, .5);
            box-shadow: var(--shadow-hover);
        }
        .wide-spot-inner {
            display: grid;
            grid-template-columns: 360px 1fr;
            min-height: 0;
        }
        .wide-spot-inner .spot-img {
            min-height: 220px;
            background: var(--surface-2);
        }
        .wide-spot-inner .spot-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .spot-copy {
            padding: 30px 36px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .spot-copy h3 {
            font-size: 1.45rem;
            font-weight: 800;
            margin: 8px 0 10px;
        }
        .spot-copy p {
            color: #BDB5CE;
            margin-bottom: 10px;
            max-width: 620px;
        }
        .duo-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 26px 28px;
            transition: all .25s ease;
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .duo-card:hover {
            border-color: rgba(124, 58, 237, .5);
            box-shadow: var(--shadow-hover);
        }
        .duo-card .duo-meta {
            color: #817898;
            font-size: .8rem;
            margin-bottom: 10px;
        }
        .duo-card h3 {
            font-size: 1.2rem;
            font-weight: 750;
            color: #fff;
            margin-bottom: 10px;
        }
        .duo-card p {
            color: #BDB5CE;
            font-size: .9rem;
            flex: 1;
            margin-bottom: 14px;
        }
        .duo-card .duo-line {
            border-top: 1px solid var(--border);
            padding-top: 10px;
            font-size: .84rem;
            color: #8F85A3;
        }

        /* ===== 分页 ===== */
        .pagination-wrap {
            padding: 42px 0 28px;
            text-align: center;
        }
        .page-pager {
            display: inline-flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
        }
        .page-pager a,
        .page-pager span {
            min-width: 44px;
            height: 44px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 0 16px;
            border: 1px solid var(--border);
            background: var(--surface);
            border-radius: 12px;
            color: #CFC6DE;
            font-weight: 600;
            font-size: .92rem;
            transition: all .22s ease;
        }
        .page-pager a:hover {
            border-color: var(--primary);
            color: #fff;
            background: rgba(124, 58, 237, .15);
        }
        .page-pager .current {
            background: var(--accent);
            border-color: var(--accent);
            color: #fff;
            box-shadow: 0 8px 20px rgba(225, 29, 116, .3);
        }
        .pager-more {
            color: var(--muted);
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: 80px 0 0;
        }
        .faq-title-wrap {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
            margin-bottom: 34px;
        }
        .faq-accordion .faq-item {
            border: 1px solid var(--border);
            background: var(--surface);
            border-radius: var(--radius-lg);
            margin-bottom: 14px;
            overflow: hidden;
            transition: border-color .25s ease;
        }
        .faq-accordion .faq-item:has([aria-expanded="true"]) {
            border-color: rgba(124, 58, 237, .45);
        }
        .faq-accordion .acc-btn {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            padding: 20px 26px;
            background: transparent;
            border: 0;
            color: #fff;
            font-size: 1.05rem;
            font-weight: 650;
            font-family: inherit;
            text-align: left;
            transition: background .2s ease;
        }
        .faq-accordion .acc-btn:hover {
            background: var(--surface-2);
        }
        .faq-accordion .acc-btn .faq-icon {
            flex: 0 0 28px;
            height: 28px;
            border: 1px solid var(--border);
            background: var(--surface-2);
            color: var(--primary-light);
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: .82rem;
            transition: all .25s ease;
        }
        .faq-accordion .faq-item:has([aria-expanded="true"]) .acc-btn .faq-icon {
            transform: rotate(45deg);
            background: var(--accent);
            border-color: var(--accent);
            color: #fff;
        }
        .faq-accordion .acc-body {
            padding: 0 26px 22px;
            color: #C2B8D4;
            font-size: .94rem;
            max-width: 840px;
        }

        /* ===== CTA 收口区 ===== */
        .cta-area {
            padding: 74px 0 86px;
        }
        .cta-box {
            border: 1px solid rgba(124, 58, 237, .35);
            background:
                radial-gradient(ellipse at 15% 20%, rgba(124, 58, 237, .15), transparent 55%),
                radial-gradient(ellipse at 85% 90%, rgba(225, 29, 116, .12), transparent 45%),
                var(--surface);
            border-radius: var(--radius-lg);
            padding: clamp(30px, 5vw, 56px);
            position: relative;
            overflow: hidden;
        }
        .cta-box h2 {
            font-size: clamp(24px, 3.4vw, 36px);
            font-weight: 850;
            color: #fff;
        }
        .cta-box p {
            color: var(--muted);
            max-width: 650px;
            font-size: .98rem;
        }
        .cta-btn-row {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            align-items: center;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            border-top: 1px solid var(--border);
            background: #120D1E;
            padding: 58px 0 34px;
        }
        .footer-row {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1.1fr;
            gap: 42px;
            margin-bottom: 38px;
        }
        .footer-brand-name {
            font-size: 1.6rem;
            font-weight: 900;
            color: #fff;
            letter-spacing: .02em;
        }
        .footer-desc {
            color: var(--muted);
            font-size: .92rem;
            max-width: 360px;
            margin-top: 12px;
        }
        .footer-title {
            color: #fff;
            font-weight: 700;
            font-size: 1.02rem;
            margin-bottom: 16px;
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            align-items: flex-start;
        }
        .footer-links a {
            color: var(--muted);
            padding: 7px 0;
            font-size: .92rem;
            display: inline-flex;
            align-items: center;
        }
        .footer-links a:hover {
            color: #fff;
        }
        .footer-links a::before {
            content: "";
            width: 4px;
            height: 4px;
            background: var(--primary-light);
            border-radius: 50%;
            margin-right: 8px;
            display: inline-block;
            vertical-align: middle;
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 10px;
            border-top: 1px solid rgba(44, 36, 64, .7);
            padding-top: 24px;
            color: #756C84;
            font-size: .88rem;
        }
        .footer-bottom .domain {
            color: #574E68;
            font-weight: 600;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 992px) {
            .header-grid {
                display: none;
            }
            .mobile-bar {
                display: flex;
            }
            .subpage-masthead {
                padding: 54px 0 38px;
            }
            .feature-card .fgrid {
                grid-template-columns: 1fr;
            }
            .feature-card .fthumb {
                min-height: 220px;
            }
            .wide-spot-inner {
                grid-template-columns: 300px 1fr;
            }
            .media-card {
                flex: 0 0 calc(50% - 12px);
            }
        }
        @media (max-width: 767px) {
            body {
                font-size: 15px;
            }
            .footer-row {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
            .wide-spot-inner {
                grid-template-columns: 1fr;
            }
            .wide-spot-inner .spot-img {
                min-height: 180px;
            }
            .spot-copy,
            .feature-card .fbody {
                padding: 24px 24px;
            }
            .filter-tabs-wrap {
                padding-top: 28px;
            }
            .subpage-masthead h1 {
                font-size: 30px;
            }
            .btn-cta,
            .btn-violet,
            .btn-outline {
                width: 100%;
                max-width: 100%;
            }
        }
        @media (max-width: 576px) {
            .section-pad {
                padding: 48px 0;
            }
            .media-card {
                flex: 0 0 100%;
            }
            .feature-card .fbody {
                padding: 22px 20px;
            }
            .faq-accordion .acc-btn {
                padding: 16px 18px;
                font-size: .98rem;
            }
            .faq-accordion .acc-body {
                padding: 0 18px 18px;
            }
            .cta-box {
                padding: 28px 22px;
            }
            .page-pager a,
            .page-pager span {
                min-width: 40px;
                height: 40px;
                padding: 0 10px;
            }
            .mobile-menu {
                padding: .2rem .75rem 1rem;
            }
            .mobile-menu a {
                font-size: .98rem;
            }
            .filter-tab {
                min-height: 36px;
                padding: .2rem 1rem;
                font-size: .86rem;
            }
        }

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}