/* roulang page: index */
:root{
    --bg-base:#0A0F16;
    --bg-elev:#101A26;
    --bg-brand:#070C12;
    --primary:#1A9BE8;
    --primary-hover:#3BB3F5;
    --accent:#2BF0B3;
    --warm:#FFC24D;
    --text-title:#F2F7FB;
    --text-body:#B7C4D0;
    --text-weak:#66768A;
    --text-disabled:#3E4C5E;
    --border:rgba(255,255,255,.08);
    --glass-bg:rgba(255,255,255,.035);
    --radius-sm:8px;
    --radius-md:14px;
    --radius-lg:20px;
    --shadow-sm:0 8px 24px rgba(0,0,0,.25);
    --shadow-md:0 18px 40px rgba(0,0,0,.35);
    --glow-primary:0 0 0 1px rgba(26,155,232,.2),0 8px 30px rgba(26,155,232,.18);
    --glow-accent:0 0 0 1px rgba(43,240,179,.2),0 8px 30px rgba(43,240,179,.18);
    --font:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
    font-family:var(--font);
    background:var(--bg-base);
    color:var(--text-body);
    line-height:1.8;
    overflow-x:hidden;
    -webkit-font-smoothing:antialiased;
}
a{color:var(--primary);text-decoration:none;transition:all .2s ease}
a:hover{color:var(--primary-hover)}
img{max-width:100%;height:auto;display:block}
button,input,textarea{font-family:inherit}
ul{list-style:none}
.container{max-width:1200px;padding-left:24px;padding-right:24px}
@media(max-width:768px){.container{padding-left:16px;padding-right:16px}}
h1,h2,h3,h4,h5{color:var(--text-title);font-weight:800;line-height:1.3}
.section{padding:100px 0;position:relative}
@media(max-width:991px){.section{padding:72px 0}}
@media(max-width:767px){.section{padding:56px 0}}
.section-tag{
    display:inline-flex;align-items:center;gap:8px;
    background:rgba(26,155,232,.12);border:1px solid rgba(26,155,232,.25);
    color:var(--accent);font-size:13px;font-weight:600;
    padding:4px 16px;border-radius:100px;letter-spacing:1px;
    margin-bottom:14px;
}
.section-tag::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);box-shadow:0 0 10px var(--accent)}
.section-header{margin-bottom:48px}
.section-header h2{font-size:36px;font-weight:900;letter-spacing:.5px}
.section-header p{font-size:16px;color:var(--text-weak);margin-top:10px;max-width:640px}
@media(max-width:767px){.section-header h2{font-size:26px}}
.btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    border-radius:12px;font-weight:700;font-size:15px;padding:14px 32px;
    transition:all .2s ease;border:1px solid transparent;cursor:pointer;
    min-height:48px;
}
.btn:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.btn-glow{
    background:linear-gradient(135deg,var(--primary),#0E6EB8);
    color:#fff;box-shadow:var(--glow-primary);
    position:relative;overflow:hidden;
}
.btn-glow::after{
    content:"";position:absolute;top:0;left:-100%;width:60%;height:100%;
    background:linear-gradient(90deg,transparent,rgba(255,255,255,.2),transparent);
    transition:left .5s ease;
}
.btn-glow:hover{background:linear-gradient(135deg,var(--primary-hover),var(--primary));color:#fff;transform:translateY(-2px);box-shadow:0 0 0 1px rgba(26,155,232,.3),0 12px 36px rgba(26,155,232,.25)}
.btn-glow:hover::after{left:120%}
.btn-outline{
    background:rgba(255,255,255,.03);border-color:rgba(255,255,255,.14);
    color:var(--text-title);backdrop-filter:blur(10px);
}
.btn-outline:hover{background:rgba(255,255,255,.07);border-color:rgba(255,255,255,.25);color:var(--accent);transform:translateY(-2px)}
.btn-lg{padding:16px 42px;font-size:16px}
/* === NAV === */
.site-header{position:relative;z-index:1000}
.brand-bar{background:var(--bg-brand);border-bottom:1px solid rgba(255,255,255,.04);height:68px;display:flex;align-items:center}
@media(max-width:767px){.brand-bar{height:60px}}
.brand-logo{display:inline-flex;align-items:center;gap:12px}
.brand-logo .logo-mark{
    width:36px;height:36px;border-radius:10px;
    background:linear-gradient(135deg,var(--primary),#0E6EB8);
    display:flex;align-items:center;justify-content:center;
    box-shadow:0 0 20px rgba(26,155,232,.3);
}
.brand-logo .logo-mark svg{width:18px;height:18px;fill:#fff}
.brand-logo .brand-name{font-size:20px;font-weight:900;color:var(--text-title);letter-spacing:.5px;white-space:nowrap}
@media(max-width:480px){.brand-logo .brand-name{font-size:16px}}
.brand-tools{display:flex;align-items:center;gap:12px}
.brand-tools .btn{padding:10px 22px;font-size:14px;min-height:40px}
.channel-bar{
    background:rgba(10,15,22,.85);backdrop-filter:blur(14px);
    border-bottom:1px solid rgba(255,255,255,.06);
    position:sticky;top:0;z-index:999;
}
.channel-list{display:flex;align-items:center;gap:8px;padding:12px 0;overflow-x:auto;scrollbar-width:none}
.channel-list::-webkit-scrollbar{display:none}
.channel-list li{flex-shrink:0}
.channel-list a{
    display:inline-flex;align-items:center;gap:6px;
    padding:10px 22px;border-radius:100px;font-size:14px;font-weight:600;
    color:var(--text-body);border:1px solid transparent;
    transition:all .2s ease;white-space:nowrap;
}
.channel-list a:hover{color:var(--text-title);background:rgba(255,255,255,.06)}
.channel-list a.active{
    background:linear-gradient(135deg,rgba(26,155,232,.9),rgba(14,110,184,.9));
    color:#fff;box-shadow:var(--glow-primary);
}
.channel-list a.active:hover{color:#fff}
@media(max-width:767px){
    .brand-tools .btn span{display:none}
    .channel-list{padding:10px 0}
    .channel-list a{padding:8px 16px;font-size:13px}
}
/* === HERO === */
.hero{
    min-height:calc(100vh - 120px);
    position:relative;display:flex;align-items:center;
    padding:80px 0;
    background:url('/assets/images/backpic/back-1.png') center center/cover no-repeat;
}
@media(max-width:767px){.hero{min-height:90vh;padding:56px 0}}
.hero::before{
    content:"";position:absolute;inset:0;
    background:linear-gradient(90deg,var(--bg-base) 15%,rgba(10,15,22,.55) 60%,transparent),
    linear-gradient(0deg,var(--bg-base) 0%,transparent 30%);
}
.hero::after{
    content:"";position:absolute;inset:0;
    background-image:linear-gradient(rgba(255,255,255,.02) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.02) 1px,transparent 1px);
    background-size:40px 40px;
    pointer-events:none;
}
.hero .container{position:relative;z-index:2}
.hero-content{padding-right:40px}
@media(max-width:991px){.hero-content{padding-right:0;text-align:center}}
.hero h1{
    font-size:52px;font-weight:900;color:var(--text-title);
    line-height:1.2;letter-spacing:1px;margin-bottom:20px;
}
.hero h1 .highlight{
    color:var(--accent);
    text-shadow:0 0 30px rgba(43,240,179,.35);
    white-space:nowrap;
    display:inline-block;
}
@media(max-width:767px){
    .hero h1{font-size:30px}
    .hero h1 .highlight{white-space:normal}
}
.hero-subtitle{font-size:19px;color:var(--text-body);line-height:1.7;margin-bottom:32px}
.hero-cta{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:20px}
@media(max-width:767px){.hero-cta{flex-direction:column}.hero-cta .btn{width:100%}}
.hero-tip{font-size:13px;color:var(--text-weak)}
.hero-cards{display:grid;grid-template-columns:1fr 1fr;gap:16px}
@media(max-width:991px){.hero-cards{grid-template-columns:repeat(2,1fr);margin-top:40px}}
@media(max-width:480px){.hero-cards{grid-template-columns:1fr}}
.hero-card{
    background:rgba(255,255,255,.035);backdrop-filter:blur(14px);
    border:1px solid rgba(255,255,255,.08);
    border-radius:16px;padding:24px 20px;
    display:flex;align-items:center;gap:14px;
    transition:all .2s ease;box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
}
.hero-card:hover{transform:translateY(-4px);border-color:rgba(26,155,232,.35);box-shadow:var(--glow-primary)}
.hero-card .card-icon{
    width:40px;height:40px;border-radius:10px;flex-shrink:0;
    background:rgba(26,155,232,.15);display:flex;align-items:center;justify-content:center;
    box-shadow:inset 0 0 12px rgba(26,155,232,.1);
}
.hero-card .card-icon svg{width:20px;height:20px;fill:var(--accent)}
.hero-card .card-text{flex:1}
.hero-card .card-text h4{font-size:15px;color:var(--text-title);font-weight:700;margin-bottom:2px}
.hero-card .card-text p{font-size:13px;color:var(--text-weak);margin:0;line-height:1.4}
.hero-card .card-arrow{color:var(--text-weak);font-size:18px;transition:all .2s ease}
.hero-card:hover .card-arrow{transform:translateX(4px);color:var(--accent)}
/* === BRAND STORY === */
.brand-story{background:var(--bg-elev);overflow:hidden}
.story-row{margin-bottom:80px}
@media(max-width:991px){.story-row{margin-bottom:48px}}
.story-row:last-child{margin-bottom:0}
.story-img{
    border-radius:var(--radius-lg);overflow:hidden;position:relative;
    box-shadow:var(--shadow-md);
}
.story-img img{width:100%;height:100%;object-fit:cover;min-height:340px;transition:transform .5s ease}
.story-img:hover img{transform:scale(1.03)}
.story-img::after{content:"";position:absolute;inset:0;background:linear-gradient(0deg,rgba(10,15,22,.2),transparent 50%)}
.story-text{padding:24px 0}
.story-text h2{font-size:34px;font-weight:900;margin-bottom:20px}
@media(max-width:767px){.story-text h2{font-size:26px}}
.story-text p{font-size:16px;line-height:1.8;color:var(--text-body);margin-bottom:24px}
.story-points{list-style:none;padding:0;margin:0 0 24px}
.story-points li{display:flex;align-items:center;gap:12px;font-size:15px;color:var(--text-title);margin-bottom:12px}
.story-points .point-icon{
    width:22px;height:22px;border-radius:50%;
    background:rgba(43,240,179,.15);display:flex;align-items:center;justify-content:center;
    flex-shrink:0;
}
.story-points .point-icon svg{width:12px;height:12px;fill:var(--accent)}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--primary)}
.link-more:hover{color:var(--accent);gap:10px}
/* === CHANNEL NAV === */
.channel-nav{background:var(--bg-base)}
.channel-grid .channel-card-wrap{margin-bottom:24px}
.channel-card{
    display:flex;flex-direction:column;
    background:rgba(255,255,255,.035);backdrop-filter:blur(14px);
    border:1px solid rgba(255,255,255,.08);border-radius:var(--radius-lg);
    padding:36px 32px;height:100%;
    transition:all .25s ease;
    position:relative;overflow:hidden;
}
.channel-card::before{
    content:"";position:absolute;top:0;left:0;width:100%;height:3px;
    background:linear-gradient(90deg,var(--primary),var(--accent));
    opacity:0;transition:opacity .25s ease;
}
.channel-card:hover{transform:translateY(-6px);border-color:rgba(26,155,232,.35);box-shadow:var(--glow-primary)}
.channel-card:hover::before{opacity:1}
.channel-card .channel-icon{
    width:48px;height:48px;border-radius:12px;margin-bottom:18px;
    background:linear-gradient(135deg,rgba(26,155,232,.2),rgba(43,240,179,.1));
    display:flex;align-items:center;justify-content:center;
}
.channel-card .channel-icon svg{width:24px;height:24px;fill:var(--accent)}
.channel-card h3{font-size:20px;font-weight:800;color:var(--text-title);margin-bottom:8px}
.channel-card p{font-size:14px;color:var(--text-weak);line-height:1.6;margin-bottom:20px;flex:1}
.channel-card .channel-arrow{font-size:20px;color:var(--primary);transition:all .2s ease}
.channel-card:hover .channel-arrow{transform:translateX(6px);color:var(--accent)}
@media(max-width:991px){.channel-card{padding:28px 24px}}
/* === FEATURED === */
.featured-section{background:var(--bg-elev)}
.featured-grid .feature-card{height:100%}
.feature-card{
    background:rgba(255,255,255,.03);border:1px solid rgba(255,255,255,.07);
    border-radius:var(--radius-lg);overflow:hidden;
    transition:all .25s ease;box-shadow:var(--shadow-sm);
    display:flex;flex-direction:column;
}
.feature-card:hover{transform:translateY(-6px);border-color:rgba(26,155,232,.3);box-shadow:var(--shadow-md)}
.feature-card .card-cover{position:relative;overflow:hidden;aspect-ratio:16/9}
.feature-card .card-cover img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.feature-card:hover .card-cover img{transform:scale(1.05)}
.feature-card .badge-hot{
    position:absolute;top:12px;left:12px;z-index:2;
    background:linear-gradient(135deg,var(--accent),#1DBB8E);color:#06281B;
    font-size:12px;font-weight:700;padding:4px 14px;border-radius:100px;
    box-shadow:0 4px 12px rgba(43,240,179,.25);
}
.feature-card .card-body{padding:24px;flex:1;display:flex;flex-direction:column}
.feature-card .card-body h3{font-size:18px;font-weight:700;margin-bottom:10px;line-height:1.4}
.feature-card .card-body p{font-size:14px;color:var(--text-weak);line-height:1.6;flex:1;margin-bottom:16px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.feature-card .card-meta{display:flex;justify-content:space-between;align-items:center;font-size:13px;color:var(--text-weak);border-top:1px solid rgba(255,255,255,.06);padding-top:14px;margin-top:auto}
.feature-card .read-more{font-size:14px;font-weight:600;color:var(--primary)}
.feature-card .read-more:hover{color:var(--accent)}
.feature-card .read-more::after{content:" →";transition:all .2s}
.feature-card .read-more:hover::after{margin-left:4px}
.feature-list-card{
    background:rgba(255,255,255,.03);border:1px solid rgba(255,255,255,.07);
    border-radius:var(--radius-md);padding:20px;
    display:flex;gap:16px;align-items:center;
    transition:all .2s ease;margin-bottom:24px;
}
.feature-list-card:last-child{margin-bottom:0}
.feature-list-card:hover{background:rgba(255,255,255,.05);border-color:rgba(26,155,232,.3);transform:translateY(-2px)}
.feature-list-card .thumb{width:100px;height:68px;border-radius:10px;object-fit:cover;flex-shrink:0}
.feature-list-card .info h4{font-size:15px;font-weight:700;color:var(--text-title);margin-bottom:4px;line-height:1.4}
.feature-list-card .info p{font-size:13px;color:var(--text-weak);margin:0;line-height:1.4}
.feature-list-card .info span{font-size:12px;color:var(--text-disabled)}
/* === NEWS / CMS === */
.news-section{background:var(--bg-base)}
.news-list{position:relative}
.news-item{
    display:flex;align-items:flex-start;gap:20px;padding:20px 0;
    border-bottom:1px solid rgba(255,255,255,.05);
    transition:background .2s ease;border-left:3px solid transparent;padding-left:16px;
}
.news-item:hover{background:rgba(255,255,255,.025);border-left-color:var(--primary)}
.news-item .news-date{flex-shrink:0;text-align:center;width:64px;padding-top:4px}
.news-item .news-date .date-day{font-size:24px;font-weight:800;color:var(--text-title);line-height:1.2;display:block}
.news-item .news-date .date-month{font-size:12px;color:var(--text-weak);text-transform:uppercase;letter-spacing:.5px}
.news-item .news-body{flex:1;min-width:0}
.news-item .news-body h3{font-size:16px;font-weight:700;color:var(--text-title);margin-bottom:6px;line-height:1.4}
.news-item .news-body h3 a{color:var(--text-title)}
.news-item .news-body h3 a:hover{color:var(--primary)}
.news-item .news-body p{font-size:14px;color:var(--text-weak);line-height:1.6;margin:0;display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden}
.news-item .news-tag{
    flex-shrink:0;font-size:12px;color:var(--accent);
    background:rgba(43,240,179,.08);border:1px solid rgba(43,240,179,.2);
    padding:4px 12px;border-radius:100px;font-weight:600;
}
@media(max-width:767px){
    .news-item{flex-direction:column;gap:10px;padding:16px;border:1px solid rgba(255,255,255,.06);border-radius:14px;margin-bottom:12px}
    .news-item .news-date{display:flex;align-items:center;gap:8px;width:auto}
    .news-item .news-date .date-day{font-size:18px}
    .news-item .news-tag{align-self:flex-start}
}
.empty-state{
    display:flex;flex-direction:column;align-items:center;justify-content:center;
    padding:60px 20px;background:rgba(255,255,255,.03);
    border:1px dashed rgba(255,255,255,.1);border-radius:var(--radius-lg);
    text-align:center;
}
.empty-state svg{width:48px;height:48px;fill:var(--text-disabled);margin-bottom:16px;opacity:.6}
.empty-state p{font-size:14px;color:var(--text-weak);margin:0}
.side-panel{
    background:rgba(255,255,255,.035);backdrop-filter:blur(14px);
    border:1px solid rgba(255,255,255,.08);border-radius:var(--radius-lg);
    padding:32px;box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
    margin-bottom:24px;
}
.side-panel h3{font-size:18px;font-weight:800;color:var(--text-title);margin-bottom:20px;position:relative;padding-bottom:12px}
.side-panel h3::after{content:"";position:absolute;bottom:0;left:0;width:40px;height:2px;background:linear-gradient(90deg,var(--primary),var(--accent));border-radius:2px}
.side-panel .tag-cloud{display:flex;flex-wrap:wrap;gap:8px}
.side-panel .tag-cloud a{
    font-size:13px;color:var(--text-body);background:rgba(255,255,255,.04);
    border:1px solid rgba(255,255,255,.08);padding:6px 14px;border-radius:100px;
    transition:all .2s;
}
.side-panel .tag-cloud a:hover{background:rgba(26,155,232,.15);border-color:var(--primary);color:var(--accent)}
.side-panel .quick-list li{margin-bottom:12px}
.side-panel .quick-list a{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--text-body)}
.side-panel .quick-list a:hover{color:var(--accent)}
.side-panel .quick-list a::before{content:"→";color:var(--primary)}
/* === TRUST === */
.trust-section{background:var(--bg-elev);position:relative;overflow:hidden}
.trust-section::before{
    content:"";position:absolute;top:-40%;right:-10%;width:400px;height:400px;
    background:radial-gradient(circle,rgba(26,155,232,.08),transparent 70%);
    border-radius:50%;
}
.stats-row{margin-bottom:48px}
.stat-item{
    text-align:center;padding:32px 16px;
    background:rgba(255,255,255,.03);border:1px solid rgba(255,255,255,.06);
    border-radius:var(--radius-lg);transition:all .25s;
}
.stat-item:hover{border-color:rgba(26,155,232,.25);background:rgba(26,155,232,.05);transform:translateY(-4px)}
.stat-item .stat-number{
    font-size:42px;font-weight:900;color:var(--accent);
    line-height:1.2;display:block;letter-spacing:-1px;
    text-shadow:0 0 30px rgba(43,240,179,.2);
}
.stat-item .stat-label{font-size:14px;color:var(--text-weak);margin-top:6px;display:block}
@media(max-width:767px){.stat-item .stat-number{font-size:30px}}
.partner-row{display:flex;justify-content:center;flex-wrap:wrap;gap:16px}
.partner-item{
    display:flex;align-items:center;gap:10px;
    padding:12px 24px;border-radius:100px;
    background:rgba(255,255,255,.02);border:1px solid rgba(255,255,255,.06);
    font-size:13px;color:var(--text-body);filter:grayscale(1);opacity:.7;
    transition:all .2s;
}
.partner-item:hover{filter:grayscale(0);opacity:1;border-color:rgba(26,155,232,.3);color:var(--text-title)}
/* === FAQ === */
.faq-section{background:var(--bg-base)}
.faq-wrap{max-width:800px;margin:0 auto}
.accordion-item{
    background:rgba(255,255,255,.03);border:1px solid rgba(255,255,255,.07);
    border-radius:var(--radius-md) !important;margin-bottom:16px;overflow:hidden;
    box-shadow:var(--shadow-sm);
}
.accordion-item:first-of-type,.accordion-item:last-of-type{border-radius:var(--radius-md) !important}
.accordion-button{
    background:transparent;color:var(--text-title);font-size:16px;font-weight:700;
    padding:20px 24px;border:none;text-align:left;
    display:flex;align-items:center;justify-content:space-between;gap:16px;
    width:100%;transition:all .2s;
}
.accordion-button::after{
    content:"+";font-size:24px;color:var(--primary);flex-shrink:0;
    transition:transform .2s ease;
    background-image:none;width:auto;height:auto;
}
.accordion-button:not(.collapsed)::after{transform:rotate(45deg);color:var(--accent)}
.accordion-button:hover{background:rgba(255,255,255,.04)}
.accordion-button:focus{box-shadow:none;outline:2px solid var(--primary);outline-offset:-2px}
.accordion-button.collapsed{box-shadow:none}
.accordion-body{
    padding:0 24px 20px;font-size:14px;color:var(--text-weak);line-height:1.8;
    border-top:1px solid rgba(255,255,255,.05);padding-top:16px;
}
/* === CTA === */
.cta-section{background:var(--bg-elev);position:relative;overflow:hidden}
.cta-section::before{
    content:"";position:absolute;bottom:-40%;left:-10%;width:500px;height:500px;
    background:radial-gradient(circle,rgba(43,240,179,.08),transparent 70%);
    border-radius:50%;
}
.cta-section::after{
    content:"";position:absolute;top:-30%;right:-5%;width:350px;height:350px;
    background:radial-gradient(circle,rgba(26,155,232,.1),transparent 70%);
    border-radius:50%;
}
.cta-card{
    position:relative;z-index:2;
    background:rgba(255,255,255,.035);backdrop-filter:blur(14px);
    border:1px solid rgba(255,255,255,.08);border-radius:24px;
    padding:60px 56px;text-align:center;
    box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--shadow-md);
    max-width:720px;margin:0 auto;
}
@media(max-width:767px){.cta-card{padding:36px 20px;border-radius:18px}}
.cta-card h2{font-size:32px;font-weight:900;margin-bottom:12px}
@media(max-width:767px){.cta-card h2{font-size:24px}}
.cta-card p{font-size:15px;color:var(--text-body);margin-bottom:28px}
.cta-form{display:flex;gap:12px;max-width:480px;margin:0 auto}
@media(max-width:767px){.cta-form{flex-direction:column}}
.cta-form .form-control{
    background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.12);
    border-radius:12px;padding:14px 18px;color:var(--text-title);
    font-size:14px;height:48px;flex:1;
    transition:all .2s;
}
.cta-form .form-control::placeholder{color:var(--text-weak)}
.cta-form .form-control:focus{border-color:var(--primary);box-shadow:0 0 0 4px rgba(26,155,232,.15);outline:none;background:rgba(255,255,255,.06)}
.privacy-note{font-size:13px;color:var(--text-weak);margin-top:16px}
/* === FOOTER === */
.site-footer{background:#060A10;position:relative;padding:70px 0 0}
.site-footer::before{
    content:"";position:absolute;top:0;left:0;width:100%;height:1px;
    background:linear-gradient(90deg,transparent,var(--primary),transparent);
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .logo-mark{
    width:32px;height:32px;border-radius:8px;
    background:linear-gradient(135deg,var(--primary),#0E6EB8);
    display:flex;align-items:center;justify-content:center;
}
.footer-brand .logo-mark svg{width:16px;height:16px;fill:#fff}
.footer-brand span{font-size:18px;font-weight:900;color:var(--text-title)}
.footer-desc{font-size:14px;color:var(--text-weak);line-height:1.7;margin-bottom:24px;max-width:280px}
.footer-social{display:flex;gap:12px}
.footer-social a{
    width:36px;height:36px;border-radius:50%;
    background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.08);
    display:flex;align-items:center;justify-content:center;
    color:var(--text-weak);transition:all .2s;
}
.footer-social a:hover{background:rgba(26,155,232,.15);border-color:var(--primary);color:var(--accent)}
.footer-social a svg{width:16px;height:16px;fill:currentColor}
.footer-col h4{
    font-size:15px;font-weight:700;color:var(--text-title);
    margin-bottom:20px;position:relative;padding-bottom:10px;
}
.footer-col h4::after{content:"";position:absolute;bottom:0;left:0;width:24px;height:2px;background:var(--primary);border-radius:2px}
.footer-col ul li{margin-bottom:10px}
.footer-col ul a{font-size:14px;color:var(--text-weak)}
.footer-col ul a:hover{color:var(--accent);padding-left:4px}
.footer-col ul li{font-size:14px;color:var(--text-weak)}
.footer-bottom{
    margin-top:56px;padding:20px 0;border-top:1px solid rgba(255,255,255,.05);
    text-align:center;
}
.footer-bottom p{font-size:13px;color:var(--text-weak);margin:0}
.footer-bottom p span{color:var(--text-disabled)}
@media(max-width:767px){
    .footer-col{margin-bottom:32px}
    .footer-bottom{margin-top:32px}
}
/* === RESPONSIVE EXTRA === */
@media(max-width:991px){
    .hero h1{font-size:42px}
    .story-row .col-lg-5,.story-row .col-lg-7{margin-bottom:32px}
    .featured-grid .col-lg-5,.featured-grid .col-lg-6,.featured-grid .col-lg-7{margin-bottom:24px}
}
@media(max-width:767px){
    .hero h1{font-size:30px;line-height:1.35}
    .hero-subtitle{font-size:16px}
    .story-img img{min-height:220px}
    .feature-list-card .thumb{width:80px;height:56px}
    .channel-grid .col-lg-5,.channel-grid .col-lg-6{margin-bottom:0}
    .channel-card{padding:24px 20px;margin-bottom:16px}
    .accordion-button{font-size:15px;padding:16px 18px}
    .accordion-body{padding:0 18px 16px}
    .section-tag{font-size:12px}
}
@media(max-width:520px){
    .brand-tools .btn{padding:8px 14px;font-size:13px}
    .hero-card{padding:18px 16px}
    .hero-card .card-icon{width:34px;height:34px}
    .hero-card .card-text h4{font-size:14px}
    .hero-card .card-text p{font-size:12px}
    .stat-item{padding:20px 12px}
    .stat-item .stat-number{font-size:26px}
    .partner-item{padding:8px 16px;font-size:12px}
}

/* roulang page: category1 */
:root {
            --clr-bg: #0A0F16;
            --clr-bg-elev: #101A26;
            --clr-bg-deep: #060A10;
            --clr-primary: #1A9BE8;
            --clr-primary-hover: #3BB3F5;
            --clr-accent: #2BF0B3;
            --clr-warm: #FFC24D;
            --clr-text: #F2F7FB;
            --clr-body: #B7C4D0;
            --clr-weak: #66768A;
            --clr-disabled: #3E4C5E;
            --clr-border: rgba(255,255,255,.08);
            --clr-glass: rgba(255,255,255,.035);
            --glow-primary: rgba(26,155,232,.35);
            --glow-accent: rgba(43,240,179,.22);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --shadow-card: 0 8px 24px rgba(0,0,0,.25);
            --shadow-lift: 0 18px 40px rgba(0,0,0,.35);
            --shadow-glow: 0 0 0 1px rgba(26,155,232,.2), 0 8px 30px rgba(26,155,232,.18);
            --transition: all .2s ease;
            --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --spacer-section: 100px;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            margin: 0;
            font-family: var(--font-main);
            background: var(--clr-bg);
            color: var(--clr-body);
            line-height: 1.8;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--clr-primary-hover);
        }
        button {
            font-family: inherit;
        }
        :focus-visible {
            outline: 2px solid var(--clr-primary);
            outline-offset: 2px;
            border-radius: 4px;
        }
        .container {
            max-width: 1240px;
            padding-left: 24px;
            padding-right: 24px;
        }
        .row {
            --bs-gutter-x: 24px;
            --bs-gutter-y: 24px;
        }
        .btn {
            border-radius: 999px;
            transition: var(--transition);
        }
        .btn:focus {
            box-shadow: 0 0 0 .25rem rgba(26, 155, 232, .2);
        }

        /* ---------- Buttons ---------- */
        .btn-glow {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 10px 24px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 600;
            line-height: 1.4;
            color: #fff;
            background: linear-gradient(135deg, var(--clr-primary), #0E7EC2);
            border: 1px solid rgba(26, 155, 232, .45);
            box-shadow: 0 4px 20px rgba(26, 155, 232, .25);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
            text-decoration: none;
        }
        .btn-glow::after {
            content: "";
            position: absolute;
            top: 0;
            left: -80%;
            width: 50%;
            height: 100%;
            background: linear-gradient(100deg, transparent, rgba(255, 255, 255, .18), transparent);
            transform: skewX(-20deg);
            transition: left .45s ease;
        }
        .btn-glow:hover {
            background: linear-gradient(135deg, var(--clr-primary-hover), var(--clr-primary));
            box-shadow: 0 6px 28px rgba(26, 155, 232, .4);
            transform: translateY(-1px);
            color: #fff;
        }
        .btn-glow:hover::after {
            left: 120%;
        }
        .btn-ghost {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 600;
            color: var(--clr-text);
            background: var(--clr-glass);
            border: 1px solid var(--clr-border);
            backdrop-filter: blur(8px);
            transition: var(--transition);
            text-decoration: none;
        }
        .btn-ghost:hover {
            border-color: rgba(26, 155, 232, .4);
            background: rgba(26, 155, 232, .08);
            color: var(--clr-text);
            transform: translateY(-1px);
        }
        .btn-lg-hero {
            padding: 14px 36px;
            font-size: 16px;
        }
        .text-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--clr-primary-hover);
            font-size: 14px;
            font-weight: 600;
            transition: var(--transition);
            text-decoration: none;
        }
        .text-link:hover {
            color: var(--clr-accent);
            gap: 10px;
        }

        /* ---------- Header ---------- */
        .site-header {
            position: relative;
            z-index: 100;
        }
        .brand-bar {
            background: #070C12;
            border-bottom: 1px solid var(--clr-border);
            height: 68px;
            display: flex;
            align-items: center;
        }
        .brand-logo {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            color: var(--clr-text);
            font-weight: 800;
            font-size: 20px;
            letter-spacing: .5px;
            text-decoration: none;
        }
        .brand-logo:hover {
            color: var(--clr-text);
        }
        .logo-mark {
            width: 38px;
            height: 38px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, rgba(26, 155, 232, .2), rgba(43, 240, 179, .12));
            border: 1px solid rgba(26, 155, 232, .35);
            border-radius: 10px;
            box-shadow: 0 0 18px rgba(26, 155, 232, .12);
            flex-shrink: 0;
        }
        .logo-mark svg {
            width: 22px;
            height: 22px;
            fill: var(--clr-primary);
        }
        .brand-tools {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .channel-bar {
            background: rgba(10, 15, 22, .85);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border-bottom: 1px solid rgba(255, 255, 255, .06);
            position: sticky;
            top: 0;
            z-index: 99;
        }
        .channel-list {
            display: flex;
            align-items: center;
            list-style: none;
            margin: 0;
            padding: 10px 0;
            gap: 8px;
            overflow-x: auto;
            scrollbar-width: none;
        }
        .channel-list::-webkit-scrollbar {
            display: none;
        }
        .channel-list a {
            display: inline-block;
            padding: 10px 20px;
            font-size: 14px;
            font-weight: 500;
            color: var(--clr-body);
            border-radius: 999px;
            border: 1px solid transparent;
            white-space: nowrap;
            transition: var(--transition);
            text-decoration: none;
        }
        .channel-list a:hover {
            color: var(--clr-text);
            background: rgba(255, 255, 255, .06);
        }
        .channel-list a.active {
            background: linear-gradient(135deg, rgba(26, 155, 232, .25), rgba(43, 240, 179, .18));
            border-color: rgba(26, 155, 232, .4);
            color: var(--clr-text);
            font-weight: 600;
            box-shadow: 0 0 20px rgba(26, 155, 232, .15);
        }

        /* ---------- Page Banner ---------- */
        .page-banner {
            position: relative;
            padding: 68px 0 56px;
            background:
                linear-gradient(135deg, rgba(6, 10, 16, .94) 0%, rgba(10, 15, 22, .88) 60%, rgba(10, 15, 22, .8) 100%),
                url('/assets/images/backpic/back-1.png') center / cover no-repeat;
            border-bottom: 1px solid var(--clr-border);
            overflow: hidden;
        }
        .page-banner::before {
            content: "";
            position: absolute;
            inset: 0;
            background-image:
                linear-gradient(rgba(255, 255, 255, .03) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, .03) 1px, transparent 1px);
            background-size: 44px 44px;
            mask-image: radial-gradient(circle at 35% 40%, #000 0%, transparent 70%);
            -webkit-mask-image: radial-gradient(circle at 35% 40%, #000 0%, transparent 70%);
            pointer-events: none;
        }
        .page-banner .container {
            position: relative;
            z-index: 2;
        }
        .breadcrumb-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--clr-weak);
            margin-bottom: 20px;
        }
        .breadcrumb-nav a {
            color: var(--clr-weak);
            text-decoration: none;
            transition: var(--transition);
        }
        .breadcrumb-nav a:hover {
            color: var(--clr-primary-hover);
        }
        .breadcrumb-nav .sep {
            color: var(--clr-disabled);
            font-size: 12px;
        }
        .breadcrumb-nav .current {
            color: var(--clr-text);
            font-weight: 600;
        }
        .page-banner h1 {
            font-size: 46px;
            font-weight: 900;
            color: var(--clr-text);
            line-height: 1.3;
            margin: 0 0 8px;
            letter-spacing: 1px;
        }
        .title-glow {
            width: 48px;
            height: 4px;
            background: linear-gradient(90deg, var(--clr-primary), var(--clr-accent));
            border-radius: 2px;
            margin: 8px 0 22px;
            box-shadow: 0 0 12px rgba(26, 155, 232, .35);
        }
        .banner-desc {
            font-size: 16px;
            color: var(--clr-body);
            max-width: 720px;
            margin: 0;
            line-height: 1.8;
        }

        /* ---------- Section Head ---------- */
        .section-head {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-eyebrow {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 1px;
            color: var(--clr-accent);
            background: rgba(43, 240, 179, .08);
            border: 1px solid rgba(43, 240, 179, .18);
            padding: 5px 16px;
            border-radius: 999px;
            margin-bottom: 14px;
        }
        .section-head h2 {
            font-size: 34px;
            font-weight: 800;
            color: var(--clr-text);
            line-height: 1.35;
            margin: 0 0 10px;
        }
        .section-lead {
            font-size: 15px;
            color: var(--clr-weak);
            max-width: 560px;
            margin: 0 auto;
            line-height: 1.7;
        }

        /* ---------- Gallery Section ---------- */
        .gallery-section {
            padding: var(--spacer-section) 0;
        }
        .gallery-row {
            display: grid;
            grid-template-columns: 7fr 5fr;
            gap: 24px;
            align-items: stretch;
            margin-bottom: 32px;
        }
        .gallery-row.row-reverse {
            grid-template-columns: 5fr 7fr;
        }
        .gallery-media {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            min-height: 340px;
            box-shadow: var(--shadow-card);
        }
        .gallery-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }
        .gallery-media:hover img {
            transform: scale(1.04);
        }
        .media-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 25%, rgba(6, 10, 16, .9) 100%);
            display: flex;
            align-items: flex-end;
            padding: 30px;
        }
        .media-overlay h3 {
            font-size: 24px;
            font-weight: 800;
            color: var(--clr-text);
            margin: 0 0 6px;
        }
        .media-overlay p {
            font-size: 14px;
            color: rgba(255, 255, 255, .75);
            margin: 0;
            line-height: 1.7;
            max-width: 480px;
        }
        .gallery-index {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: linear-gradient(135deg, rgba(26, 155, 232, .35), rgba(43, 240, 179, .2));
            border: 1px solid rgba(26, 155, 232, .35);
            color: var(--clr-text);
            font-size: 15px;
            font-weight: 700;
            flex-shrink: 0;
            margin-bottom: 14px;
        }
        .gallery-panel,
        .gallery-dark,
        .gallery-glass {
            border-radius: var(--radius-lg);
            padding: 30px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            transition: var(--transition);
        }
        .glass-panel {
            background: var(--clr-glass);
            border: 1px solid var(--clr-border);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            box-shadow: inset 0 1px 0 rgba(255, 255, 255, .06), var(--shadow-card);
        }
        .gallery-panel:hover,
        .gallery-glass:hover {
            border-color: rgba(26, 155, 232, .3);
            box-shadow: var(--shadow-glow);
            transform: translateY(-3px);
        }
        .gallery-panel h3,
        .gallery-dark h3,
        .gallery-glass h3 {
            font-size: 21px;
            font-weight: 700;
            color: var(--clr-text);
            margin: 0 0 12px;
        }
        .gallery-panel p,
        .gallery-dark p,
        .gallery-glass p {
            font-size: 14px;
            color: var(--clr-body);
            line-height: 1.8;
            margin: 0 0 16px;
        }
        .point-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .point-list li {
            position: relative;
            padding: 5px 0 5px 24px;
            font-size: 14px;
            color: var(--clr-body);
            line-height: 1.7;
        }
        .point-list li::before {
            content: "";
            position: absolute;
            left: 0;
            top: 14px;
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: var(--clr-accent);
            box-shadow: 0 0 8px rgba(43, 240, 179, .4);
        }
        .gallery-dark {
            background: linear-gradient(145deg, rgba(6, 10, 16, .95), rgba(16, 26, 38, .85));
            border: 1px solid rgba(255, 255, 255, .07);
            box-shadow: var(--shadow-card);
            position: relative;
            overflow: hidden;
        }
        .gallery-dark::before {
            content: "";
            position: absolute;
            top: -50px;
            right: -50px;
            width: 160px;
            height: 160px;
            background: radial-gradient(circle, rgba(26, 155, 232, .18), transparent 70%);
            pointer-events: none;
        }
        .gallery-dark:hover {
            border-color: rgba(26, 155, 232, .3);
            box-shadow: var(--shadow-glow);
            transform: translateY(-3px);
        }
        .gallery-glass {
            background: rgba(255, 255, 255, .045);
            border: 1px solid rgba(255, 255, 255, .1);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
        }
        .tag-list {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 4px;
        }
        .tag-list span {
            display: inline-block;
            padding: 5px 14px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 500;
            color: var(--clr-body);
            background: rgba(255, 255, 255, .05);
            border: 1px solid var(--clr-border);
            transition: var(--transition);
        }
        .tag-list span:hover {
            color: var(--clr-accent);
            border-color: rgba(43, 240, 179, .3);
        }
        .stats-block {
            background: linear-gradient(135deg, rgba(6, 10, 16, .96), rgba(16, 26, 38, .88));
            border: 1px solid rgba(255, 255, 255, .07);
            border-radius: var(--radius-lg);
            padding: 40px 36px;
            margin-top: 32px;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }
        .stats-block::before {
            content: "";
            position: absolute;
            top: -80px;
            left: -80px;
            width: 240px;
            height: 240px;
            background: radial-gradient(circle, rgba(43, 240, 179, .1), transparent 70%);
            pointer-events: none;
        }
        .stats-block .gallery-index {
            background: linear-gradient(135deg, rgba(43, 240, 179, .3), rgba(26, 155, 232, .2));
            border-color: rgba(43, 240, 179, .35);
        }
        .stats-block h3 {
            font-size: 22px;
            font-weight: 800;
            color: var(--clr-text);
            margin: 0 0 8px;
        }
        .stats-block>p {
            font-size: 14px;
            color: var(--clr-body);
            max-width: 620px;
            margin: 0 0 28px;
            line-height: 1.8;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .stat-item {
            background: rgba(255, 255, 255, .03);
            border: 1px solid var(--clr-border);
            border-radius: var(--radius-md);
            padding: 24px 20px;
            text-align: center;
            transition: var(--transition);
        }
        .stat-item:hover {
            border-color: rgba(26, 155, 232, .35);
            transform: translateY(-3px);
            box-shadow: 0 10px 30px rgba(0, 0, 0, .3);
        }
        .stat-item strong {
            display: block;
            font-size: 28px;
            font-weight: 800;
            color: var(--clr-accent);
            line-height: 1.2;
            margin-bottom: 6px;
            text-shadow: 0 0 20px rgba(43, 240, 179, .3);
        }
        .stat-item span {
            font-size: 13px;
            color: var(--clr-weak);
            line-height: 1.5;
        }

        /* ---------- Scenario Section ---------- */
        .scenario-section {
            padding: 0 0 var(--spacer-section);
        }
        .scenario-grid {
            display: grid;
            grid-template-columns: 1.25fr 1fr 1fr;
            gap: 24px;
            align-items: stretch;
        }
        .scenario-card {
            background: var(--clr-glass);
            border: 1px solid var(--clr-border);
            border-radius: var(--radius-lg);
            padding: 30px 28px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            display: flex;
            flex-direction: column;
        }
        .scenario-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: linear-gradient(90deg, var(--clr-primary), transparent);
            opacity: 0;
            transition: var(--transition);
        }
        .scenario-card:hover {
            border-color: rgba(26, 155, 232, .35);
            box-shadow: var(--shadow-glow);
            transform: translateY(-5px);
        }
        .scenario-card:hover::before {
            opacity: 1;
        }
        .scenario-card.wide {
            background: linear-gradient(145deg, rgba(16, 26, 38, .92), rgba(26, 155, 232, .08));
            border-color: rgba(26, 155, 232, .2);
        }
        .scenario-card.accent-border {
            border-color: rgba(43, 240, 179, .15);
        }
        .scenario-card.accent-border:hover {
            border-color: rgba(43, 240, 179, .4);
            box-shadow: 0 0 0 1px rgba(43, 240, 179, .2), 0 8px 30px rgba(43, 240, 179, .12);
        }
        .card-index {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: rgba(26, 155, 232, .15);
            border: 1px solid rgba(26, 155, 232, .25);
            color: var(--clr-accent);
            font-size: 14px;
            font-weight: 700;
            margin-bottom: 18px;
        }
        .scenario-card h3 {
            font-size: 19px;
            font-weight: 700;
            color: var(--clr-text);
            margin: 0 0 10px;
        }
        .scenario-card p {
            font-size: 14px;
            color: var(--clr-body);
            line-height: 1.8;
            margin: 0;
        }

        /* ---------- FAQ Section ---------- */
        .faq-section {
            padding: 60px 0 var(--spacer-section);
            background: linear-gradient(180deg, transparent, rgba(6, 10, 16, .4) 30%, rgba(6, 10, 16, .4) 70%, transparent);
        }
        .faq-wrap {
            max-width: 860px;
            margin: 0 auto;
            background: var(--clr-glass);
            border: 1px solid var(--clr-border);
            border-radius: var(--radius-lg);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            padding: 8px 32px;
            box-shadow: var(--shadow-card);
        }
        .faq-item {
            border-bottom: 1px solid rgba(255, 255, 255, .06);
        }
        .faq-item:last-child {
            border-bottom: none;
        }
        .faq-q {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 0;
            width: 100%;
            background: none;
            border: none;
            font-size: 16px;
            font-weight: 600;
            color: var(--clr-text);
            text-align: left;
            cursor: pointer;
            transition: var(--transition);
        }
        .faq-q:hover {
            color: var(--clr-primary-hover);
        }
        .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            border: 1px solid var(--clr-border);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: var(--clr-accent);
            font-size: 18px;
            font-weight: 400;
            line-height: 1;
            flex-shrink: 0;
            transition: transform .3s ease, border-color .3s ease, background .3s ease;
        }
        .faq-q:not(.collapsed) .faq-icon {
            transform: rotate(45deg);
            border-color: rgba(43, 240, 179, .4);
            background: rgba(43, 240, 179, .08);
        }
        .faq-a {
            padding: 0 0 20px;
            font-size: 14px;
            color: var(--clr-body);
            line-height: 1.85;
        }

        /* ---------- CTA Section ---------- */
        .cta-section {
            padding: 0 0 var(--spacer-section);
        }
        .cta-card {
            position: relative;
            background: var(--clr-glass);
            border: 1px solid var(--clr-border);
            border-radius: var(--radius-lg);
            padding: 56px 48px;
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            text-align: center;
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }
        .cta-card::before {
            content: "";
            position: absolute;
            top: -80px;
            right: -80px;
            width: 240px;
            height: 240px;
            background: radial-gradient(circle, var(--glow-primary), transparent 70%);
            pointer-events: none;
        }
        .cta-card::after {
            content: "";
            position: absolute;
            bottom: -60px;
            left: -60px;
            width: 180px;
            height: 180px;
            background: radial-gradient(circle, var(--glow-accent), transparent 70%);
            pointer-events: none;
        }
        .cta-card .container {
            position: relative;
            z-index: 2;
        }
        .cta-card h2 {
            font-size: 32px;
            font-weight: 800;
            color: var(--clr-text);
            margin: 0 0 12px;
            line-height: 1.35;
        }
        .cta-card p {
            font-size: 15px;
            color: var(--clr-body);
            max-width: 520px;
            margin: 0 auto 28px;
            line-height: 1.8;
        }
        .cta-actions {
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 14px;
            flex-wrap: wrap;
        }
        .cta-note {
            font-size: 12px;
            color: var(--clr-weak);
            margin-top: 18px;
            line-height: 1.6;
        }

        /* ---------- Footer ---------- */
        .site-footer {
            background: var(--clr-bg-deep);
            padding: 64px 0 24px;
            position: relative;
            border-top: 1px solid transparent;
        }
        .site-footer::before {
            content: "";
            position: absolute;
            top: -1px;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(26, 155, 232, .6), rgba(43, 240, 179, .4), transparent);
        }
        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 18px;
            font-weight: 800;
            color: var(--clr-text);
            margin-bottom: 14px;
        }
        .footer-brand .logo-mark {
            width: 32px;
            height: 32px;
        }
        .footer-brand .logo-mark svg {
            width: 18px;
            height: 18px;
        }
        .footer-desc {
            font-size: 14px;
            color: var(--clr-weak);
            line-height: 1.7;
            margin-bottom: 18px;
            max-width: 320px;
        }
        .footer-social {
            display: flex;
            gap: 10px;
        }
        .footer-social a {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            border: 1px solid var(--clr-border);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: var(--clr-weak);
            transition: var(--transition);
            text-decoration: none;
        }
        .footer-social a:hover {
            color: var(--clr-primary-hover);
            border-color: rgba(26, 155, 232, .4);
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(26, 155, 232, .12);
        }
        .footer-social svg {
            width: 16px;
            height: 16px;
            fill: currentColor;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--clr-text);
            margin-bottom: 16px;
            letter-spacing: .5px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col li {
            margin-bottom: 10px;
        }
        .footer-col a {
            color: var(--clr-weak);
            font-size: 14px;
            transition: var(--transition);
            text-decoration: none;
        }
        .footer-col a:hover {
            color: var(--clr-accent);
        }
        .footer-col li span {
            color: var(--clr-weak);
            font-size: 14px;
            line-height: 1.7;
            display: inline-block;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .06);
            padding-top: 20px;
            margin-top: 40px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 13px;
            color: var(--clr-weak);
        }
        .footer-bottom span {
            color: var(--clr-weak);
        }

        /* ---------- Responsive ---------- */
        @media (max-width: 1199px) {
            .gallery-row {
                grid-template-columns: 6fr 6fr;
            }
            .gallery-row.row-reverse {
                grid-template-columns: 6fr 6fr;
            }
            .scenario-grid {
                grid-template-columns: 1fr 1fr;
            }
            .scenario-card.wide {
                grid-column: span 2;
            }
        }
        @media (max-width: 991px) {
            .page-banner h1 {
                font-size: 38px;
            }
            .section-head h2 {
                font-size: 30px;
            }
            .gallery-row,
            .gallery-row.row-reverse {
                grid-template-columns: 1fr;
            }
            .gallery-media {
                min-height: 280px;
            }
            .stats-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .scenario-grid {
                grid-template-columns: 1fr;
            }
            .scenario-card.wide {
                grid-column: span 1;
            }
            .cta-card {
                padding: 44px 36px;
            }
        }
        @media (max-width: 767px) {
            body {
                font-size: 15px;
            }
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .brand-bar {
                height: 60px;
            }
            .brand-logo {
                font-size: 17px;
                gap: 8px;
            }
            .logo-mark {
                width: 34px;
                height: 34px;
            }
            .brand-tools .btn-glow {
                font-size: 13px;
                padding: 8px 18px;
            }
            .page-banner {
                padding: 48px 0 40px;
            }
            .page-banner h1 {
                font-size: 30px;
            }
            .banner-desc {
                font-size: 15px;
            }
            .section-head {
                margin-bottom: 32px;
            }
            .section-head h2 {
                font-size: 26px;
            }
            .gallery-section {
                padding: 56px 0;
            }
            .gallery-media {
                min-height: 220px;
            }
            .media-overlay {
                padding: 20px;
            }
            .media-overlay h3 {
                font-size: 20px;
            }
            .gallery-panel,
            .gallery-dark,
            .gallery-glass {
                padding: 24px 20px;
            }
            .stats-block {
                padding: 30px 20px;
            }
            .stats-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .scenario-section {
                padding: 0 0 56px;
            }
            .scenario-card {
                padding: 24px 20px;
            }
            .faq-section {
                padding: 40px 0 56px;
            }
            .faq-wrap {
                padding: 4px 20px;
            }
            .faq-q {
                font-size: 15px;
                padding: 16px 0;
            }
            .faq-a {
                font-size: 13px;
            }
            .cta-section {
                padding: 0 0 56px;
            }
            .cta-card {
                padding: 36px 20px;
            }
            .cta-card h2 {
                font-size: 25px;
            }
            .cta-actions {
                flex-direction: column;
                width: 100%;
            }
            .cta-actions .btn {
                width: 100%;
                min-height: 46px;
            }
            .site-footer {
                padding: 48px 0 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                justify-content: center;
            }
            .footer-col {
                margin-bottom: 24px;
            }
            .footer-social a {
                width: 44px;
                height: 44px;
            }
            .channel-list a {
                padding: 10px 18px;
            }
        }
        @media (max-width: 520px) {
            .brand-tools .btn-glow {
                display: none;
            }
            .page-banner h1 {
                font-size: 27px;
                letter-spacing: .3px;
            }
            .gallery-index {
                width: 38px;
                height: 38px;
                font-size: 13px;
            }
            .section-eyebrow {
                font-size: 12px;
            }
            .tag-list span {
                font-size: 11px;
            }
        }

/* roulang page: article */
:root {
            --bg-base: #0A0F16;
            --bg-elev: #101A26;
            --bg-dark: #070C12;
            --primary: #1A9BE8;
            --primary-hover: #3BB3F5;
            --accent: #2BF0B3;
            --warm: #FFC24D;
            --text-title: #F2F7FB;
            --text-body: #B7C4D0;
            --text-weak: #66768A;
            --text-disabled: #3E4C5E;
            --border-glass: rgba(255, 255, 255, .08);
            --glass-bg: rgba(255, 255, 255, .035);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --shadow: 0 8px 24px rgba(0, 0, 0, .25);
            --shadow-raised: 0 18px 40px rgba(0, 0, 0, .35);
            --shadow-glow: 0 0 0 1px rgba(26, 155, 232, .2), 0 8px 30px rgba(26, 155, 232, .18);
            --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-sans);
            background: var(--bg-base);
            color: var(--text-body);
            font-size: 16px;
            line-height: 1.8;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

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

        a {
            color: var(--primary);
            text-decoration: none;
            transition: all .2s ease;
        }

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

        button,
        input,
        textarea {
            font-family: inherit;
            transition: all .2s ease;
        }

        button:focus-visible,
        a:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        .container {
            max-width: 1200px;
        }

        /* ===== 顶部导航 ===== */
        .site-header {
            position: relative;
            z-index: 1030;
        }

        .brand-bar {
            background: var(--bg-dark);
            border-bottom: 1px solid rgba(255, 255, 255, .04);
            padding: 0;
            height: 68px;
            display: flex;
            align-items: center;
        }

        .brand-logo {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            text-decoration: none;
            color: var(--text-title);
        }

        .brand-logo:hover {
            color: var(--text-title);
        }

        .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: linear-gradient(135deg, rgba(26, 155, 232, .25), rgba(43, 240, 179, .15));
            border: 1px solid rgba(26, 155, 232, .4);
            box-shadow: 0 0 18px rgba(26, 155, 232, .2);
        }

        .logo-mark svg {
            width: 22px;
            height: 22px;
            fill: var(--primary);
        }

        .brand-name {
            font-size: 20px;
            font-weight: 800;
            letter-spacing: .5px;
            background: linear-gradient(90deg, var(--text-title), var(--primary-hover));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            white-space: nowrap;
        }

        .brand-tools {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .btn-glow {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 40px;
            padding: 0 22px;
            border-radius: 20px;
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            background: linear-gradient(120deg, var(--primary), #2e7fd6);
            border: 1px solid rgba(26, 155, 232, .5);
            box-shadow: 0 0 20px rgba(26, 155, 232, .25);
            text-decoration: none;
            white-space: nowrap;
        }

        .btn-glow:hover {
            color: #fff;
            background: linear-gradient(120deg, var(--primary-hover), #3a9ae0);
            box-shadow: 0 0 30px rgba(26, 155, 232, .4);
            transform: translateY(-1px);
        }

        .nav-toggle {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            border-radius: 10px;
            background: rgba(255, 255, 255, .05);
            border: 1px solid var(--border-glass);
            color: var(--text-title);
            cursor: pointer;
        }

        .channel-bar {
            background: rgba(10, 15, 22, .85);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border-bottom: 1px solid rgba(255, 255, 255, .06);
            position: sticky;
            top: 0;
            z-index: 1020;
        }

        .channel-list {
            list-style: none;
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 10px 0;
            margin: 0;
            flex-wrap: wrap;
        }

        .channel-list li a {
            display: inline-block;
            padding: 8px 20px;
            border-radius: 30px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-body);
            text-decoration: none;
            border: 1px solid transparent;
            transition: all .2s ease;
            line-height: 1.4;
        }

        .channel-list li a:hover {
            color: var(--text-title);
            background: rgba(255, 255, 255, .06);
            border-color: rgba(255, 255, 255, .1);
        }

        .channel-list li a.active {
            color: #fff;
            background: linear-gradient(120deg, rgba(26, 155, 232, .85), rgba(26, 155, 232, .55));
            border-color: rgba(26, 155, 232, .5);
            box-shadow: 0 0 18px rgba(26, 155, 232, .3);
        }

        @media (max-width: 991.98px) {
            .channel-bar {
                display: none;
            }

            .channel-bar.show {
                display: block;
            }

            .channel-list {
                flex-direction: column;
                align-items: flex-start;
                padding: 16px 0;
                gap: 6px;
            }

            .channel-list li a {
                width: 100%;
                padding: 12px 20px;
            }
        }

        /* ===== 文章 Hero 区 ===== */
        .article-hero {
            position: relative;
            background: linear-gradient(to bottom, rgba(10, 15, 22, .55), var(--bg-base)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            padding: 72px 0 52px;
            border-bottom: 1px solid rgba(255, 255, 255, .04);
        }

        .article-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(100deg, rgba(10, 15, 22, .85) 25%, rgba(10, 15, 22, .4) 70%, transparent);
            pointer-events: none;
        }

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

        .breadcrumb-nav {
            margin-bottom: 28px;
        }

        .breadcrumb-list {
            list-style: none;
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 6px;
            padding: 0;
            margin: 0;
            font-size: 13px;
            color: var(--text-weak);
        }

        .breadcrumb-list a {
            color: var(--text-weak);
            text-decoration: none;
        }

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

        .breadcrumb-list .sep {
            color: var(--text-disabled);
            margin: 0 2px;
        }

        .breadcrumb-list .current {
            color: var(--text-title);
            display: inline-block;
            max-width: 220px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
            vertical-align: middle;
        }

        .article-header h1 {
            font-size: 44px;
            font-weight: 900;
            line-height: 1.3;
            color: var(--text-title);
            margin-bottom: 18px;
            letter-spacing: .5px;
            background: linear-gradient(90deg, #fff, rgba(255, 255, 255, .85));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .article-meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 14px 28px;
            font-size: 14px;
            color: var(--text-weak);
        }

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

        .meta-item svg {
            width: 15px;
            height: 15px;
            opacity: .6;
        }

        .meta-item strong {
            color: var(--text-body);
            font-weight: 500;
        }

        /* ===== 文章正文布局 ===== */
        .article-main {
            background: var(--bg-base);
            padding: 48px 0 90px;
        }

        .article-layout {
            max-width: 860px;
            margin: 0 auto;
            background: rgba(255, 255, 255, .025);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            padding: 44px 48px;
            box-shadow: var(--shadow);
            backdrop-filter: blur(4px);
            -webkit-backdrop-filter: blur(4px);
            position: relative;
        }

        .article-layout::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--accent), transparent);
            border-radius: var(--radius-lg) var(--radius-lg) 0 0;
        }

        .article-body {
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-body);
            word-wrap: break-word;
        }

        .article-body h2 {
            font-size: 28px;
            font-weight: 800;
            color: var(--text-title);
            margin: 36px 0 18px;
            line-height: 1.4;
            padding-bottom: 10px;
            border-bottom: 1px solid rgba(255, 255, 255, .06);
        }

        .article-body h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--text-title);
            margin: 28px 0 14px;
            line-height: 1.4;
        }

        .article-body p {
            margin-bottom: 20px;
            text-align: left;
        }

        .article-body ul,
        .article-body ol {
            margin: 0 0 22px 0;
            padding-left: 22px;
        }

        .article-body ul li,
        .article-body ol li {
            margin-bottom: 10px;
        }

        .article-body blockquote {
            border-left: 4px solid var(--primary);
            background: rgba(26, 155, 232, .06);
            padding: 16px 22px;
            margin: 24px 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-title);
            font-style: normal;
        }

        .article-body img {
            max-width: 100%;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-glass);
            margin: 22px 0;
        }

        .article-body a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 4px;
        }

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

        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 24px 0;
            font-size: 14px;
        }

        .article-body table th,
        .article-body table td {
            border: 1px solid rgba(255, 255, 255, .1);
            padding: 12px 14px;
            text-align: left;
        }

        .article-body table th {
            background: rgba(255, 255, 255, .04);
            color: var(--text-title);
            font-weight: 600;
        }

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

        /* ===== 标签区 ===== */
        .article-tags {
            margin-top: 40px;
            padding-top: 28px;
            border-top: 1px solid rgba(255, 255, 255, .06);
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 10px;
        }

        .tag-label {
            font-size: 13px;
            color: var(--text-weak);
            margin-right: 6px;
        }

        .tag-pill {
            display: inline-block;
            padding: 6px 14px;
            border-radius: 30px;
            font-size: 13px;
            color: var(--text-body);
            background: rgba(255, 255, 255, .04);
            border: 1px solid var(--border-glass);
        }

        .tag-pill:hover {
            color: var(--accent);
            border-color: rgba(43, 240, 179, .4);
        }

        /* ===== 相关阅读 ===== */
        .related-posts {
            margin-top: 52px;
            padding-top: 34px;
            border-top: 1px solid rgba(255, 255, 255, .06);
        }

        .related-posts-header h2 {
            font-size: 22px;
            font-weight: 800;
            color: var(--text-title);
            margin-bottom: 22px;
            position: relative;
            display: inline-block;
        }

        .related-posts-header h2::after {
            content: "";
            position: absolute;
            bottom: -6px;
            left: 0;
            width: 48px;
            height: 3px;
            border-radius: 3px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
        }

        .feature-card {
            background: var(--glass-bg);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all .25s ease;
            height: 100%;
        }

        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-glow);
            border-color: rgba(26, 155, 232, .35);
        }

        .feature-card a {
            text-decoration: none;
            color: inherit;
            display: block;
        }

        .card-img-wrap {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: var(--bg-elev);
        }

        .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
        }

        .card-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            padding: 4px 12px;
            border-radius: 30px;
            font-size: 12px;
            font-weight: 600;
            color: #041O2O;
            background: linear-gradient(120deg, var(--accent), #a8f5dc);
            box-shadow: 0 4px 16px rgba(43, 240, 179, .35);
        }

        .card-content {
            padding: 18px 20px 20px;
        }

        .card-content h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-title);
            margin-bottom: 8px;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .card-excerpt {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.5;
            margin: 0;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        /* ===== 返回入口 ===== */
        .article-back {
            margin-top: 42px;
            padding-top: 26px;
            border-top: 1px solid rgba(255, 255, 255, .06);
            text-align: center;
        }

        .back-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 30px;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-title);
            background: rgba(255, 255, 255, .04);
            border: 1px solid var(--border-glass);
            text-decoration: none;
            transition: all .2s ease;
        }

        .back-link:hover {
            color: #fff;
            border-color: rgba(26, 155, 232, .5);
            box-shadow: var(--shadow-glow);
            transform: translateX(-3px);
        }

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

        /* ===== 无文章空态 ===== */
        .not-found-wrap {
            padding: 90px 0;
            text-align: center;
        }

        .not-found-box {
            max-width: 480px;
            margin: 0 auto;
            padding: 60px 40px;
            background: var(--glass-bg);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow);
        }

        .not-found-box svg {
            width: 56px;
            height: 56px;
            color: var(--text-weak);
            margin-bottom: 20px;
            opacity: .6;
            filter: drop-shadow(0 0 12px rgba(26, 155, 232, .3));
        }

        .not-found-box h1 {
            font-size: 28px;
            font-weight: 800;
            color: var(--text-title);
            margin-bottom: 14px;
        }

        .not-found-box p {
            font-size: 15px;
            color: var(--text-weak);
            margin-bottom: 26px;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 46px;
            padding: 0 30px;
            border-radius: 30px;
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            background: linear-gradient(120deg, var(--primary), #2e7fd6);
            border: 1px solid rgba(26, 155, 232, .5);
            box-shadow: 0 0 20px rgba(26, 155, 232, .25);
            text-decoration: none;
        }

        .btn-primary:hover {
            color: #fff;
            background: linear-gradient(120deg, var(--primary-hover), #3a9ae0);
            box-shadow: 0 0 30px rgba(26, 155, 232, .4);
            transform: translateY(-2px);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #060A10;
            border-top: 1px solid rgba(255, 255, 255, .04);
            padding: 64px 0 0;
            position: relative;
        }

        .site-footer::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--primary), transparent);
        }

        .site-footer .footer-col {
            margin-bottom: 40px;
        }

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

        .footer-brand .logo-mark {
            width: 34px;
            height: 34px;
            background: rgba(26, 155, 232, .15);
        }

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

        .footer-brand span {
            font-size: 18px;
            font-weight: 800;
            color: var(--text-title);
        }

        .footer-desc {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.7;
            margin-bottom: 20px;
            max-width: 300px;
        }

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

        .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, .04);
            border: 1px solid var(--border-glass);
            color: var(--text-body);
            transition: all .2s ease;
        }

        .footer-social a:hover {
            color: var(--text-title);
            background: rgba(26, 155, 232, .15);
            border-color: rgba(26, 155, 232, .4);
            transform: translateY(-2px);
        }

        .footer-social svg {
            width: 16px;
            height: 16px;
            fill: currentColor;
        }

        .site-footer h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-title);
            margin-bottom: 16px;
            letter-spacing: .5px;
        }

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

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

        .site-footer ul a {
            font-size: 14px;
            color: var(--text-weak);
            text-decoration: none;
            transition: all .2s ease;
        }

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

        .site-footer ul li:not(a) {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.7;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .04);
            padding: 20px 0;
            margin-top: 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 8px;
        }

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

        .footer-bottom span {
            color: var(--text-body);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 991.98px) {
            .article-hero {
                padding: 58px 0 40px;
            }

            .article-header h1 {
                font-size: 38px;
            }

            .article-layout {
                padding: 36px 32px;
            }
        }

        @media (max-width: 767.98px) {
            .brand-name {
                font-size: 17px;
            }

            .brand-bar {
                height: 60px;
            }

            .logo-mark {
                width: 34px;
                height: 34px;
            }

            .btn-glow {
                height: 38px;
                padding: 0 18px;
                font-size: 13px;
            }

            .article-hero {
                padding: 42px 0 34px;
            }

            .article-header h1 {
                font-size: 30px;
            }

            .article-meta {
                gap: 10px 18px;
                font-size: 13px;
            }

            .article-main {
                padding: 32px 0 60px;
            }

            .article-layout {
                padding: 24px 20px;
                border-radius: var(--radius-md);
            }

            .article-body {
                font-size: 15px;
            }

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

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

            .article-body blockquote {
                padding: 14px 16px;
            }

            .feature-card {
                margin-bottom: 8px;
            }

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

        @media (max-width: 520px) {
            .article-header h1 {
                font-size: 26px;
               }
}
@media (min-width: 992px) {
    .nav-toggle {
        display: none;
    }
}

/* roulang page: category2 */
:root {
            --bg-base: #0A0F16;
            --bg-elev: #101A26;
            --bg-header: #070C12;
            --primary: #1A9BE8;
            --primary-hover: #3BB3F5;
            --accent: #2BF0B3;
            --warm: #FFC24D;
            --text-title: #F2F7FB;
            --text-body: #B7C4D0;
            --text-weak: #66768A;
            --text-disabled: #3E4C5E;
            --border: rgba(255, 255, 255, .08);
            --glass-bg: rgba(255, 255, 255, .035);
            --glow-primary: rgba(26, 155, 232, .35);
            --glow-accent: rgba(43, 240, 179, .22);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --shadow-regular: 0 8px 24px rgba(0, 0, 0, .25);
            --shadow-raised: 0 18px 40px rgba(0, 0, 0, .35);
            --shadow-glow: 0 0 0 1px rgba(26, 155, 232, .2), 0 8px 30px rgba(26, 155, 232, .18);
            --transition: all .2s ease;
            --container-max: 1200px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            background: var(--bg-base);
            color: var(--text-body);
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            font-size: 16px;
            line-height: 1.8;
            margin: 0;
            padding: 0;
            overflow-x: hidden;
        }

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

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

        button,
        input {
            font-family: inherit;
        }

        .container {
            max-width: var(--container-max);
            padding-left: 24px;
            padding-right: 24px;
        }

        @media (max-width: 768px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        h1, h2, h3, h4, h5, h6 {
            color: var(--text-title);
            font-weight: 800;
            line-height: 1.3;
            margin-top: 0;
        }

        /* ========== 按钮 ========== */
        .btn-glow {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-height: 44px;
            padding: 10px 28px;
            border: none;
            border-radius: var(--radius-md);
            background: linear-gradient(135deg, var(--primary), #0E7BC4);
            color: #fff;
            font-size: 15px;
            font-weight: 700;
            letter-spacing: .5px;
            box-shadow: 0 4px 20px var(--glow-primary);
            transition: var(--transition);
            cursor: pointer;
            position: relative;
            overflow: hidden;
        }
        .btn-glow:hover {
            background: linear-gradient(135deg, var(--primary-hover), var(--primary));
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 28px rgba(26, 155, 232, .5);
        }
        .btn-glow:active {
            transform: translateY(0);
            box-shadow: 0 2px 12px rgba(26, 155, 232, .3);
        }
        .btn-glow:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }
        .btn-glow::after {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 60%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, .25), transparent);
            transform: skewX(-20deg);
            transition: left .5s ease;
        }
        .btn-glow:hover::after {
            left: 130%;
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-height: 44px;
            padding: 10px 28px;
            border-radius: var(--radius-md);
            border: 1px solid rgba(255, 255, 255, .18);
            background: rgba(255, 255, 255, .035);
            color: var(--text-title);
            font-size: 15px;
            font-weight: 600;
            backdrop-filter: blur(8px);
            transition: var(--transition);
            cursor: pointer;
        }
        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary-hover);
            background: rgba(26, 155, 232, .08);
        }
        .btn-outline:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        .btn-lg {
            min-height: 52px;
            padding: 13px 38px;
            font-size: 16px;
        }

        /* ========== 导航 ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1040;
        }

        .brand-bar {
            background: var(--bg-header);
            height: 68px;
            border-bottom: 1px solid rgba(255, 255, 255, .03);
        }
        .brand-bar .container {
            height: 100%;
        }

        .brand-logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            color: var(--text-title);
            font-size: 20px;
            font-weight: 800;
            letter-spacing: .5px;
            transition: var(--transition);
        }
        .brand-logo:hover {
            color: var(--primary-hover);
        }
        .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 9px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            box-shadow: 0 0 18px rgba(26, 155, 232, .4);
        }
        .logo-mark svg {
            width: 20px;
            height: 20px;
            fill: #fff;
        }

        .brand-tools {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .channel-bar {
            background: rgba(10, 15, 22, .85);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border-bottom: 1px solid rgba(255, 255, 255, .06);
        }
        .channel-list {
            list-style: none;
            display: flex;
            gap: 6px;
            margin: 0;
            padding: 12px 0;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }
        .channel-list::-webkit-scrollbar {
            display: none;
        }
        .channel-list a {
            display: inline-flex;
            align-items: center;
            padding: 10px 20px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-body);
            white-space: nowrap;
            border: 1px solid transparent;
            transition: var(--transition);
        }
        .channel-list a:hover {
            color: var(--text-title);
            background: rgba(255, 255, 255, .06);
        }
        .channel-list a.active {
            background: linear-gradient(135deg, var(--primary), #0E7BC4);
            color: #fff;
            box-shadow: 0 4px 18px rgba(26, 155, 232, .35);
            border-color: rgba(255, 255, 255, .1);
        }

        @media (max-width: 768px) {
            .brand-bar {
                height: 60px;
            }
            .brand-logo {
                font-size: 17px;
            }
            .brand-tools .btn-glow {
                padding: 8px 18px;
                font-size: 13px;
                min-height: 38px;
            }
            .channel-list {
                padding: 10px 0;
            }
            .channel-list a {
                padding: 8px 16px;
                font-size: 13px;
            }
        }

        /* ========== 页面标题区 ========== */
        .page-hero {
            position: relative;
            padding: 100px 0 72px;
            background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            background-color: var(--bg-base);
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(10, 15, 22, .95) 15%, rgba(10, 15, 22, .82) 55%, rgba(10, 15, 22, .45));
        }
        .page-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background-image: linear-gradient(rgba(255,255,255,.02) 1px, transparent 1px),
                              linear-gradient(90deg, rgba(255,255,255,.02) 1px, transparent 1px);
            background-size: 42px 42px;
            pointer-events: none;
        }
        .page-hero .container {
            position: relative;
            z-index: 1;
        }

        .breadcrumb-nav {
            font-size: 14px;
            color: var(--text-weak);
            margin-bottom: 18px;
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .breadcrumb-nav a {
            color: var(--text-weak);
        }
        .breadcrumb-nav a:hover {
            color: var(--primary-hover);
        }
        .breadcrumb-nav .separator {
            color: var(--text-disabled);
        }
        .breadcrumb-nav .current {
            color: var(--text-title);
            font-weight: 500;
        }

        .page-hero h1 {
            font-size: 46px;
            font-weight: 900;
            margin: 0 0 14px;
            letter-spacing: 1px;
        }
        .hero-gradient-bar {
            width: 48px;
            height: 4px;
            border-radius: 4px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            margin-bottom: 22px;
        }
        .page-hero .hero-desc {
            font-size: 16px;
            color: var(--text-body);
            max-width: 760px;
            line-height: 1.9;
            margin-bottom: 0;
        }

        @media (max-width: 768px) {
            .page-hero {
                padding: 48px 0 44px;
            }
            .page-hero h1 {
                font-size: 30px;
            }
            .page-hero .hero-desc {
                font-size: 15px;
            }
        }

        /* ========== 指南小节 ========== */
        .guide-section {
            padding: 100px 0;
            position: relative;
        }
        .guide-section.alt-bg {
            background: var(--bg-elev);
        }
        .guide-section-head {
            margin-bottom: 48px;
            position: relative;
        }
        .guide-num {
            font-size: 80px;
            font-weight: 900;
            line-height: 1;
            color: transparent;
            -webkit-text-stroke: 1px rgba(26, 155, 232, .45);
            display: block;
            margin-bottom: 12px;
            letter-spacing: 2px;
        }
        .guide-section-head h2 {
            font-size: 32px;
            font-weight: 800;
            margin-bottom: 10px;
        }
        .guide-section-head .guide-intro {
            font-size: 15px;
            color: var(--text-weak);
            max-width: 560px;
        }

        .guide-row {
            margin-top: 20px;
        }
        .guide-media-frame {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid rgba(255, 255, 255, .08);
            box-shadow: var(--shadow-raised);
        }
        .guide-media-frame::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 55%, rgba(10, 15, 22, .6));
            pointer-events: none;
            z-index: 1;
        }
        .guide-media-frame img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 260px;
        }
        .guide-media-tag {
            position: absolute;
            bottom: 14px;
            left: 14px;
            z-index: 2;
            background: rgba(255, 255, 255, .1);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, .12);
            color: var(--text-title);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 999px;
        }

        .guide-text {
            padding-left: 20px;
            padding-right: 20px;
        }
        .guide-text p {
            font-size: 16px;
            line-height: 1.9;
            margin-bottom: 18px;
            color: var(--text-body);
        }
        .guide-points {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .guide-points li {
            position: relative;
            padding-left: 26px;
            margin-bottom: 12px;
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.7;
        }
        .guide-points li::before {
            content: '';
            position: absolute;
            left: 0;
            top: 8px;
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--accent);
            box-shadow: 0 0 8px rgba(43, 240, 179, .6);
        }

        /* 渐变分隔线 */
        .guide-divider {
            height: 1px;
            max-width: var(--container-max);
            margin: 0 auto;
            background: linear-gradient(90deg, transparent, rgba(26, 155, 232, .45), rgba(43, 240, 179, .25), transparent);
        }

        @media (max-width: 768px) {
            .guide-section {
                padding: 60px 0;
            }
            .guide-section-head h2 {
                font-size: 26px;
            }
            .guide-num {
                font-size: 56px;
            }
            .guide-media-frame img {
                min-height: 200px;
            }
            .guide-text {
                padding: 24px 0 0;
            }
        }

        /* ========== FAQ ========== */
        .faq-section {
            padding: 100px 0;
            background: var(--bg-elev);
            position: relative;
        }
        .faq-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: radial-gradient(ellipse at 80% 20%, rgba(26, 155, 232, .08), transparent 60%);
            pointer-events: none;
        }
        .faq-section .container {
            position: relative;
            z-index: 1;
        }

        .section-label {
            display: inline-block;
            font-size: 13px;
            font-weight: 700;
            color: var(--accent);
            text-transform: uppercase;
            letter-spacing: 2px;
            margin-bottom: 12px;
        }
        .faq-section h2 {
            font-size: 32px;
            font-weight: 800;
            margin-bottom: 16px;
        }
        .faq-section .section-desc {
            color: var(--text-weak);
            font-size: 15px;
            margin-bottom: 40px;
            max-width: 560px;
        }

        .faq-list {
            max-width: 860px;
        }

        .faq-item {
            background: rgba(255, 255, 255, .035);
            border: 1px solid rgba(255, 255, 255, .08);
            border-radius: var(--radius-md);
            margin-bottom: 16px;
            overflow: hidden;
            backdrop-filter: blur(8px);
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(26, 155, 232, .3);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            background: transparent;
            border: none;
            padding: 22px 24px;
            color: var(--text-title);
            font-size: 16px;
            font-weight: 600;
            text-align: left;
            cursor: pointer;
            transition: var(--transition);
        }
        .faq-question:hover {
            background: rgba(255, 255, 255, .03);
        }
        .faq-question:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: -2px;
            border-radius: var(--radius-md);
        }
        .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 400;
            color: var(--primary);
            transition: transform .25s ease;
        }
        .faq-item[aria-expanded="true"] .faq-icon,
        .faq-question[aria-expanded="true"] .faq-icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            padding: 0 24px 22px;
            color: var(--text-body);
            font-size: 14px;
            line-height: 1.8;
        }

        @media (max-width: 768px) {
            .faq-section {
                padding: 60px 0;
            }
            .faq-section h2 {
                font-size: 26px;
            }
            .faq-question {
                padding: 18px 18px;
                font-size: 15px;
            }
            .faq-answer {
                padding: 0 18px 18px;
            }
        }

        /* ========== 相关入口卡 ========== */
        .related-section {
            padding: 100px 0;
            position: relative;
        }
        .related-section h2 {
            font-size: 32px;
            font-weight: 800;
            margin-bottom: 10px;
        }
        .related-section .section-desc {
            color: var(--text-weak);
            font-size: 15px;
            margin-bottom: 44px;
            max-width: 520px;
        }

        .related-card {
            background: rgba(255, 255, 255, .035);
            border: 1px solid rgba(255, 255, 255, .08);
            border-radius: var(--radius-lg);
            padding: 30px;
            height: 100%;
            display: flex;
            flex-direction: column;
            backdrop-filter: blur(14px);
            box-shadow: inset 0 1px 0 rgba(255, 255, 255, .06);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .related-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            opacity: 0;
            transition: var(--transition);
        }
        .related-card:hover {
            transform: translateY(-6px);
            border-color: rgba(26, 155, 232, .35);
            box-shadow: var(--shadow-glow), var(--shadow-raised);
        }
        .related-card:hover::before {
            opacity: 1;
        }

        .related-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, rgba(26, 155, 232, .25), rgba(43, 240, 179, .12));
            border: 1px solid rgba(26, 155, 232, .25);
            margin-bottom: 18px;
        }
        .related-icon svg {
            width: 20px;
            height: 20px;
            fill: var(--accent);
        }
        .related-card h3 {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .related-card p {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.7;
            flex: 1;
            margin-bottom: 16px;
        }
        .related-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
        }
        .related-link svg {
            width: 14px;
            height: 14px;
            fill: currentColor;
            transition: transform .2s ease;
        }
        .related-card:hover .related-link svg {
            transform: translateX(4px);
        }

        .related-center {
            margin-top: 24px;
        }
        .related-center .related-card {
            background: linear-gradient(135deg, rgba(26, 155, 232, .08), rgba(255, 255, 255, .025));
        }

        @media (max-width: 768px) {
            .related-section {
                padding: 60px 0;
            }
            .related-section h2 {
                font-size: 26px;
            }
            .related-card {
                margin-bottom: 16px;
            }
        }

        /* ========== CTA ========== */
        .cta-section {
            padding: 90px 0;
            background: var(--bg-elev);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image:
                linear-gradient(rgba(255,255,255,.02) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255,255,255,.02) 1px, transparent 1px);
            background-size: 32px 32px;
            pointer-events: none;
        }
        .cta-section::after {
            content: '';
            position: absolute;
            top: 50%;
            right: -5%;
            width: 340px;
            height: 340px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(43, 240, 179, .1), transparent 70%);
            pointer-events: none;
        }

        .cta-card {
            position: relative;
            z-index: 1;
            background: rgba(255, 255, 255, .035);
            backdrop-filter: blur(14px);
            border: 1px solid rgba(255, 255, 255, .08);
            border-radius: var(--radius-lg);
            padding: 52px 48px;
            max-width: 880px;
            margin: 0 auto;
            text-align: center;
            box-shadow: inset 0 1px 0 rgba(255, 255, 255, .06), var(--shadow-raised);
        }
        .cta-card h2 {
            font-size: 28px;
            font-weight: 800;
            margin-bottom: 14px;
        }
        .cta-card .cta-text {
            color: var(--text-weak);
            font-size: 15px;
            margin-bottom: 32px;
            line-height: 1.7;
        }
        .cta-form {
            display: flex;
            gap: 12px;
            max-width: 520px;
            margin: 0 auto;
        }
        .cta-form .form-control {
            flex: 1;
            height: 50px;
            background: rgba(255, 255, 255, .04);
            border: 1px solid rgba(255, 255, 255, .12);
            border-radius: var(--radius-md);
            color: var(--text-title);
            font-size: 14px;
            padding: 0 16px;
            transition: var(--transition);
        }
        .cta-form .form-control::placeholder {
            color: var(--text-weak);
        }
        .cta-form .form-control:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(26, 155, 232, .15);
            background: rgba(255, 255, 255, .06);
            color: var(--text-title);
            outline: none;
        }
        .cta-form .btn-glow {
            flex-shrink: 0;
            min-height: 50px;
        }
        .cta-privacy {
            font-size: 12px;
            color: var(--text-weak);
            margin-top: 18px;
        }

        @media (max-width: 768px) {
            .cta-section {
                padding: 56px 0;
            }
            .cta-card {
                padding: 34px 20px;
            }
            .cta-card h2 {
                font-size: 22px;
            }
            .cta-form {
                flex-direction: column;
            }
            .cta-form .btn-glow {
                width: 100%;
            }
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: #060A10;
            padding: 70px 0 28px;
            border-top: 1px solid rgba(255, 255, 255, .04);
        }
        .site-footer::before {
            content: '';
            display: block;
            height: 1px;
            width: 100%;
            background: linear-gradient(90deg, transparent, var(--primary), transparent);
            margin-bottom: 50px;
        }
        .footer-col {
            margin-bottom: 32px;
        }
        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
            color: var(--text-title);
            font-size: 20px;
            font-weight: 800;
        }
        .footer-desc {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.7;
            margin-bottom: 20px;
            max-width: 300px;
        }
        .footer-social {
            display: flex;
            gap: 10px;
        }
        .footer-social a {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: rgba(255, 255, 255, .04);
            border: 1px solid rgba(255, 255, 255, .06);
            transition: var(--transition);
        }
        .footer-social a:hover {
            background: rgba(26, 155, 232, .12);
            border-color: var(--primary);
            transform: translateY(-2px);
        }
        .footer-social svg {
            width: 16px;
            height: 16px;
            fill: var(--text-body);
        }
        .footer-social a:hover svg {
            fill: var(--text-title);
        }
        .site-footer h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-title);
            margin-bottom: 18px;
        }
        .site-footer ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer ul li {
            margin-bottom: 10px;
        }
        .site-footer ul li a {
            color: var(--text-weak);
            font-size: 14px;
            transition: var(--transition);
        }
        .site-footer ul li a:hover {
            color: var(--primary-hover);
        }
        .site-footer ul li {
            color: var(--text-weak);
            font-size: 14px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .04);
            padding-top: 24px;
            margin-top: 16px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 8px;
        }
        .footer-bottom p {
            font-size: 13px;
            color: var(--text-disabled);
            margin: 0;
        }
        .footer-bottom span {
            color: var(--text-weak);
        }

        @media (max-width: 768px) {
            .site-footer {
                padding: 48px 0 24px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: center;
                text-align: center;
            }
        }

        /* ========== 焦点与可访问性 ========== */
        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }