/* roulang page: index */
:root{
    --color-primary:#e6542b;
    --color-primary-deep:#c9401a;
    --color-secondary:#1f4d44;
    --color-secondary-deep:#123028;
    --color-accent:#d9a64a;
    --color-bg:#faf7f2;
    --color-bg-alt:#f2ece3;
    --color-bg-dark:#14201c;
    --color-text:#202823;
    --color-text-sub:#5b645f;
    --color-text-dim:#8b938e;
    --color-border:rgba(32,40,35,0.12);
    --color-border-dark:rgba(255,255,255,0.08);
    --radius-card:16px;
    --radius-btn:10px;
    --radius-input:10px;
    --shadow-sm:0 2px 12px rgba(20,32,28,0.06);
    --shadow-md:0 10px 30px rgba(20,32,28,0.12);
    --font-family:-apple-system,BlinkMacSystemFont,"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-family);
    color:var(--color-text);
    background-color:var(--color-bg);
    line-height:1.6;
    font-size:16px;
    -webkit-font-smoothing:antialiased;
    padding-bottom:90px;
    padding-bottom:calc(80px + env(safe-area-inset-bottom));
    overflow-x:hidden;
}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit;transition:color .25s ease}
ul,ol{list-style:none}
button,input,select,textarea{font-family:inherit;font-size:inherit;line-height:inherit}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.grid-container{padding-left:24px;padding-right:24px;max-width:1200px}
.section{padding:90px 0}
.section-alt{background:var(--color-bg-alt)}
.section-dark{background:var(--color-bg-dark)}
.section-header{margin-bottom:48px}
.section-title{font-size:32px;font-weight:800;line-height:1.3;letter-spacing:-0.02em;color:var(--color-text)}
.section-subtitle{margin-top:12px;font-size:16px;line-height:1.8;color:var(--color-text-sub);max-width:640px}
.text-center{text-align:center}
.text-primary{color:var(--color-primary)}
.text-accent{color:var(--color-accent)}
.badge{
    display:inline-flex;align-items:center;gap:6px;
    padding:5px 14px;border-radius:999px;
    font-size:13px;font-weight:600;
    background:rgba(31,77,68,0.10);
    color:var(--color-secondary);
}
.btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    padding:14px 28px;border-radius:var(--radius-btn);
    font-weight:600;font-size:15px;line-height:1.2;
    cursor:pointer;border:none;outline:none;
    transition:all .25s ease;white-space:nowrap;
}
.btn-primary{background:var(--color-primary);color:#fff}
.btn-primary:hover{background:var(--color-primary-deep);transform:translateY(-2px);box-shadow:0 8px 24px rgba(230,84,43,0.3)}
.btn-primary:active{transform:translateY(0)}
.btn-secondary{background:transparent;color:var(--color-secondary);border:1.5px solid var(--color-secondary)}
.btn-secondary:hover{background:var(--color-secondary);color:#fff;transform:translateY(-2px)}
.btn-secondary:active{transform:translateY(0)}
.btn-accent{background:var(--color-accent);color:#202823}
.btn-accent:hover{filter:brightness(1.08);transform:translateY(-2px)}
.btn-lg{padding:16px 36px;font-size:16px}
.btn-sm{padding:10px 20px;font-size:14px}
.btn:focus-visible{outline:3px solid rgba(230,84,43,0.4);outline-offset:2px}

/* ===== Header ===== */
.site-header{
    position:sticky;top:0;z-index:1000;
    height:72px;background:rgba(250,247,242,0.94);
    backdrop-filter:blur(10px);
    -webkit-backdrop-filter:blur(10px);
    transition:box-shadow .3s ease;
}
.site-header.scrolled{box-shadow:0 1px 0 rgba(32,40,35,0.08)}
.header-inner{
    height:72px;display:flex;align-items:center;justify-content:space-between;gap:20px;
}
.logo{display:flex;align-items:center;gap:12px;flex-shrink:0}
.logo-icon{
    width:44px;height:44px;border-radius:12px;
    background:linear-gradient(135deg,var(--color-primary) 0%,#f07a4b 100%);
    display:flex;align-items:center;justify-content:center;color:#fff;font-size:20px;
    box-shadow:0 4px 12px rgba(230,84,43,0.25);
}
.logo-text{font-size:22px;font-weight:800;letter-spacing:-0.02em;color:var(--color-text);white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:28px}
.main-nav a{
    font-size:16px;font-weight:500;color:var(--color-text-sub);
    padding:6px 2px;position:relative;transition:color .25s ease;
}
.main-nav a::after{
    content:'';position:absolute;left:0;bottom:-2px;width:100%;height:3px;
    border-radius:3px;background:var(--color-primary);
    transform:scaleX(0);transform-origin:left;transition:transform .3s ease;
}
.main-nav a:hover{color:var(--color-primary)}
.main-nav a:hover::after{transform:scaleX(1)}
.main-nav a.active{color:var(--color-primary);font-weight:600}
.main-nav a.active::after{transform:scaleX(1)}
.nav-cta{margin-left:8px}
.hamburger{
    display:none;width:44px;height:44px;border:none;background:none;cursor:pointer;
    border-radius:10px;align-items:center;justify-content:center;color:var(--color-text);
    transition:background .2s ease;
}
.hamburger:hover{background:rgba(32,40,35,0.05)}
.hamburger i{font-size:22px}
.mobile-menu{
    position:fixed;top:0;left:0;right:0;bottom:0;z-index:1100;
    background:var(--color-bg);padding:80px 40px 40px;
    display:none;flex-direction:column;
    opacity:0;transform:translateY(-10px);transition:opacity .3s ease,transform .3s ease;
}
.mobile-menu.open{opacity:1;transform:translateY(0);display:flex}
.mobile-menu a{
    font-size:20px;font-weight:600;color:var(--color-text);
    padding:14px 0;border-bottom:1px solid var(--color-border);
    display:block;
}
.mobile-menu a.active{color:var(--color-primary)}
.mobile-close{
    position:absolute;top:20px;right:20px;width:44px;height:44px;
    border:none;background:rgba(32,40,35,0.06);border-radius:10px;
    cursor:pointer;font-size:20px;color:var(--color-text);
    display:flex;align-items:center;justify-content:center;
}
.mobile-menu .btn{margin-top:24px}

/* ===== Hero ===== */
.hero{
    position:relative;
    background:var(--color-bg);
    padding:80px 0 80px;
    overflow:hidden;
}
.hero::before{
    content:'';position:absolute;top:-120px;right:-80px;width:420px;height:420px;
    border-radius:50%;border:3px solid rgba(230,84,43,0.08);
    pointer-events:none;
}
.hero::after{
    content:'';position:absolute;top:-40px;right:180px;width:280px;height:280px;
    border-radius:50%;border:2px solid rgba(230,84,43,0.06);
    pointer-events:none;
}
.hero-left{position:relative;z-index:2}
.hero-status{
    display:inline-flex;align-items:center;gap:8px;
    padding:6px 16px;border-radius:999px;
    background:rgba(31,77,68,0.08);font-size:13px;
    color:var(--color-secondary);margin-bottom:20px;font-weight:600;
}
.hero-status .status-dot{
    width:8px;height:8px;border-radius:50%;background:#2ecc71;
    position:relative;
}
.hero-status .status-dot::after{
    content:'';position:absolute;inset:-4px;border-radius:50%;
    background:rgba(46,204,113,0.3);animation:pulse 2s infinite;
}
@keyframes pulse{0%{transform:scale(0.6);opacity:1}100%{transform:scale(1.4);opacity:0}}
.hero h1{
    font-size:46px;font-weight:800;line-height:1.25;
    letter-spacing:-0.03em;color:var(--color-text);margin-bottom:20px;
}
.hero h1 .highlight{
    color:var(--color-primary);position:relative;
}
.hero-subtitle{
    font-size:18px;line-height:1.8;color:var(--color-text-sub);
    max-width:480px;margin-bottom:32px;
}
.hero-buttons{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:24px}
.hero-trust{
    display:flex;align-items:center;gap:16px;flex-wrap:wrap;
    font-size:13px;color:var(--color-text-dim);
}
.hero-trust span{display:inline-flex;align-items:center;gap:6px}
.hero-trust i{color:var(--color-accent);font-size:14px}
.hero-right{position:relative;z-index:2}
.hero-media{
    position:relative;border-radius:20px;overflow:hidden;
    box-shadow:var(--shadow-md);
    border:2px solid var(--color-border);
}
.hero-media img{width:100%;height:auto;object-fit:cover;aspect-ratio:4/3}
.hero-media::after{
    content:'';position:absolute;inset:0;
    background:linear-gradient(to top,rgba(20,32,28,0.12) 0%,transparent 50%);
    pointer-events:none;
}
.hero-badge{
    position:absolute;background:rgba(255,255,255,0.96);
    border-radius:12px;padding:12px 18px;
    box-shadow:var(--shadow-md);z-index:3;
    display:flex;align-items:center;gap:10px;
}
.hero-badge .badge-num{font-size:22px;font-weight:800;color:var(--color-primary)}
.hero-badge .badge-label{font-size:12px;color:var(--color-text-sub);line-height:1.4}
.hero-badge-1{top:24px;left:-20px}
.hero-badge-2{bottom:40px;right:-16px}
.hero-badge-2 .badge-num{color:var(--color-secondary)}

/* ===== Features ===== */
.features{padding:90px 0}
.feature-row-1{display:flex;gap:24px;margin-bottom:24px}
.feature-card{
    flex:1;background:#fff;border-radius:var(--radius-card);
    padding:32px;border:1px solid var(--color-border);
    box-shadow:var(--shadow-sm);transition:all .3s ease;
    position:relative;overflow:hidden;
}
.feature-card:hover{
    transform:translateY(-4px);
    box-shadow:var(--shadow-md);
}
.feature-card.large{flex:1.4}
.feature-card.small{flex:1}
.feature-icon{
    width:56px;height:56px;border-radius:50%;
    background:rgba(230,84,43,0.10);
    display:flex;align-items:center;justify-content:center;
    color:var(--color-primary);font-size:22px;margin-bottom:20px;
}
.feature-card h3{font-size:22px;font-weight:700;margin-bottom:12px;line-height:1.35}
.feature-card p{font-size:15px;line-height:1.8;color:var(--color-text-sub);margin-bottom:16px}
.feature-link{
    font-size:14px;font-weight:600;color:var(--color-primary);
    display:inline-flex;align-items:center;gap:6px;transition:gap .25s ease;
}
.feature-link:hover{gap:10px}
.feature-banner{
    background:#fff;border-radius:var(--radius-card);
    border:1px solid var(--color-border);
    box-shadow:var(--shadow-sm);padding:32px 40px;
    display:flex;align-items:center;justify-content:space-between;gap:32px;
    transition:all .3s ease;
}
.feature-banner:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}
.feature-banner-left{flex:1}
.feature-banner-left h3{font-size:22px;font-weight:700;margin-bottom:10px}
.feature-banner-left p{font-size:15px;color:var(--color-text-sub);line-height:1.8}
.feature-banner-right{display:flex;align-items:center;gap:24px}
.banner-data{text-align:center}
.banner-data .num{font-size:36px;font-weight:800;color:var(--color-secondary);line-height:1.2}
.banner-data .label{font-size:13px;color:var(--color-text-dim);margin-top:4px}

/* ===== Scenarios ===== */
.scenarios{padding:90px 0;background:var(--color-bg-alt)}
.scenario-row{
    display:flex;gap:64px;align-items:center;margin-bottom:80px;
}
.scenario-row:last-child{margin-bottom:0}
.scenario-row.reverse{flex-direction:row-reverse}
.scenario-media{
    flex:1;position:relative;border-radius:20px;overflow:hidden;
    box-shadow:var(--shadow-md);
}
.scenario-media img{width:100%;height:auto;object-fit:cover;aspect-ratio:4/3}
.scenario-num{
    position:absolute;top:-20px;left:-10px;
    font-size:120px;font-weight:800;line-height:1;
    color:rgba(230,84,43,0.10);z-index:1;pointer-events:none;
    letter-spacing:-0.05em;
}
.scenario-content{flex:1}
.scenario-tag{
    display:inline-flex;align-items:center;gap:8px;
    font-size:14px;font-weight:700;color:var(--color-primary);
    text-transform:uppercase;letter-spacing:0.05em;margin-bottom:16px;
}
.scenario-content h3{font-size:30px;font-weight:800;line-height:1.35;margin-bottom:16px;letter-spacing:-0.02em}
.scenario-content p{font-size:16px;line-height:1.8;color:var(--color-text-sub);margin-bottom:16px}
.steps{
    display:flex;gap:16px;flex-wrap:wrap;margin-top:24px;
}
.step-item{
    display:inline-flex;align-items:center;gap:8px;
    background:rgba(250,247,242,0.9);border-radius:999px;
    padding:10px 20px;font-size:14px;font-weight:600;color:var(--color-secondary);
    border:1px solid var(--color-border);
}
.step-item i{color:var(--color-primary)}

/* ===== Social Proof ===== */
.social-proof{
    padding:90px 0;background:var(--color-bg-dark);
    color:#fff;border-radius:24px;margin:0 24px;
}
.social-proof .container{max-width:1200px}
.social-proof-header{text-align:center;margin-bottom:48px}
.social-proof-header .section-title{color:#fff}
.social-proof-header .section-subtitle{color:rgba(255,255,255,0.6);margin:12px auto 0}
.stats-grid{
    display:flex;justify-content:center;gap:60px;
    flex-wrap:wrap;margin-bottom:56px;
}
.stat-item{text-align:center}
.stat-num{
    font-size:42px;font-weight:800;color:var(--color-accent);
    line-height:1.2;
}
.stat-label{font-size:14px;color:rgba(255,255,255,0.5);margin-top:8px}
.testimonials-grid{
    display:flex;gap:24px;flex-wrap:wrap;
}
.testimonial-card{
    flex:1;min-width:280px;
    background:rgba(255,255,255,0.06);
    border-radius:12px;padding:28px;
    border:1px solid var(--color-border-dark);
    transition:background .3s ease;
}
.testimonial-card:hover{background:rgba(255,255,255,0.09)}
.testimonial-card .quote{
    font-size:16px;line-height:1.8;color:rgba(255,255,255,0.85);
    margin-bottom:20px;
    position:relative;padding-left:24px;
}
.testimonial-card .quote::before{
    content:'\f10d';font-family:"Font Awesome 6 Free";font-weight:900;
    position:absolute;left:0;top:2px;color:var(--color-accent);font-size:16px;
}
.testimonial-author{
    display:flex;align-items:center;gap:12px;
}
.testimonial-avatar{
    width:40px;height:40px;border-radius:50%;
    background:var(--color-accent);color:#202823;
    display:flex;align-items:center;justify-content:center;
    font-weight:700;font-size:14px;
}
.testimonial-author .name{font-size:14px;font-weight:600;color:rgba(255,255,255,0.9)}
.testimonial-author .role{font-size:13px;color:rgba(255,255,255,0.5)}

/* ===== News ===== */
.news{padding:90px 0}
.news .section-header{
    display:flex;justify-content:space-between;align-items:flex-end;
    flex-wrap:wrap;gap:16px;
}
.view-all{
    font-size:15px;font-weight:600;color:var(--color-primary);
    display:inline-flex;align-items:center;gap:6px;
    transition:gap .25s ease;
}
.view-all:hover{gap:10px}
.news-list{display:flex;flex-direction:column;gap:20px}
.news-card{
    background:#fff;border-radius:var(--radius-card);
    border:1px solid var(--color-border);
    box-shadow:var(--shadow-sm);
    display:flex;overflow:hidden;
    transition:all .3s ease;
}
.news-card:hover{box-shadow:var(--shadow-md);transform:translateY(-3px)}
.news-card.news-card-full{display:flex}
.news-thumb{
    width:160px;min-width:160px;height:auto;
    overflow:hidden;background:var(--color-bg-alt);
}
.news-thumb img{width:100%;height:100%;object-fit:cover}
.news-body{padding:20px 24px;display:flex;flex-direction:column;justify-content:center;gap:8px}
.news-badge{
    align-self:flex-start;
    background:rgba(31,77,68,0.10);color:var(--color-secondary);
    padding:3px 12px;border-radius:999px;font-size:12px;font-weight:600;
}
.news-body h3{font-size:18px;font-weight:700;line-height:1.4;transition:color .25s ease}
.news-card:hover .news-body h3{color:var(--color-primary)}
.news-body h3 a{display:inline-block;transition:transform .25s ease}
.news-card:hover .news-body h3 a{transform:translateX(3px)}
.news-excerpt{
    font-size:14px;color:var(--color-text-sub);line-height:1.6;
    display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;
    overflow:hidden;
}
.news-date{
    font-size:13px;color:var(--color-text-dim);
    display:flex;align-items:center;gap:6px;
}
.news-date i{font-size:12px}
.empty-state{
    width:100%;height:200px;border:2px dashed var(--color-border);
    border-radius:16px;display:flex;flex-direction:column;
    align-items:center;justify-content:center;gap:12px;
    background:rgba(250,247,242,0.5);
}
.empty-state i{font-size:32px;color:var(--color-text-dim)}
.empty-state p{font-size:15px;color:var(--color-text-sub)}

/* ===== FAQ ===== */
.faq{padding:90px 0;background:var(--color-bg-alt)}
.faq .section-header{text-align:center}
.faq .section-subtitle{margin:12px auto 0}
.custom-accordion{
    max-width:860px;margin:0 auto;
    background:transparent;border:none;
}
.custom-accordion .accordion-item{
    background:#fff;border-radius:var(--radius-card);
    margin-bottom:16px;border:1px solid var(--color-border);
    overflow:hidden;transition:box-shadow .3s ease;
}
.custom-accordion .accordion-item:hover{box-shadow:var(--shadow-sm)}
.custom-accordion .accordion-item.is-active{box-shadow:var(--shadow-sm)}
.custom-accordion .accordion-title{
    background:#fff;color:var(--color-text);
    font-size:16px;font-weight:600;line-height:1.4;
    padding:20px 24px;position:relative;
    border:none;border-bottom:1px solid transparent;
    transition:color .25s ease;
    display:flex;align-items:center;justify-content:space-between;
}
.custom-accordion .accordion-title:hover{color:var(--color-primary);background:#fff}
.custom-accordion .accordion-title::before{display:none}
.custom-accordion .accordion-title::after{
    content:'\f067';font-family:"Font Awesome 6 Free";font-weight:900;
    color:var(--color-primary);font-size:16px;
    position:static;margin-left:16px;
}
.custom-accordion .accordion-item.is-active > .accordion-title::after{
    content:'\f068';
}
.custom-accordion .accordion-content{
    background:var(--color-bg);
    padding:20px 24px;color:var(--color-text-sub);
    font-size:15px;line-height:1.8;border:none;
}

/* ===== CTA card ===== */
.cta-card{
    background:rgba(230,84,43,0.06);
    border-radius:16px;padding:48px 56px;
    display:flex;align-items:center;justify-content:space-between;gap:32px;
    flex-wrap:wrap;border:1px solid rgba(230,84,43,0.15);
}
.cta-card h3{font-size:26px;font-weight:800;color:var(--color-text);margin-bottom:8px}
.cta-card p{font-size:15px;color:var(--color-text-sub)}

/* ===== Footer ===== */
.site-footer{background:var(--color-bg-dark);color:rgba(255,255,255,0.7);padding-top:64px}
.footer-grid{
    display:flex;gap:48px;flex-wrap:wrap;padding-bottom:48px;
}
.footer-brand{flex:1.4;min-width:260px}
.footer-brand .logo-text{color:#fff;font-size:22px}
.footer-brand .logo-icon{width:42px;height:42px;font-size:18px}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.8;color:rgba(255,255,255,0.6)}
.footer-col{flex:1;min-width:180px}
.footer-col h4{
    font-size:16px;font-weight:700;color:#fff;
    margin-bottom:20px;position:relative;padding-bottom:10px;
}
.footer-col h4::after{
    content:'';position:absolute;left:0;bottom:0;width:28px;height:2px;
    background:var(--color-accent);border-radius:2px;
}
.footer-col ul li{margin-bottom:12px}
.footer-col ul li a{
    font-size:14px;color:rgba(255,255,255,0.6);
    transition:color .25s ease,padding-left .25s ease;
}
.footer-col ul li a:hover{color:#fff;padding-left:4px}
.footer-contact li{
    font-size:14px;color:rgba(255,255,255,0.6);
    display:flex;align-items:flex-start;gap:10px;margin-bottom:14px;
}
.footer-contact i{color:var(--color-accent);margin-top:3px;width:16px}
.footer-bottom{
    border-top:1px solid rgba(255,255,255,0.08);
    padding:20px 0;text-align:center;
    font-size:13px;color:rgba(255,255,255,0.35);
}

/* ===== Fixed Bottom Bar ===== */
.bottom-bar{
    position:fixed;bottom:0;left:0;right:0;z-index:900;
    background:var(--color-primary);
    padding:0;
    box-shadow:0 -4px 20px rgba(20,32,28,0.15);
    min-height:64px;
    padding-bottom:env(safe-area-inset-bottom);
}
.bottom-bar-inner{
    max-width:1200px;margin:0 auto;padding:0 24px;
    height:64px;display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.bottom-bar .bar-text{
    color:#fff;font-size:15px;font-weight:600;line-height:1.4;
    display:flex;align-items:center;gap:10px;
}
.bottom-bar .bar-text i{font-size:18px}
.bottom-bar .btn{
    background:var(--color-accent);color:#202823;
    font-weight:700;padding:10px 24px;font-size:14px;
}
.bottom-bar .btn:hover{filter:brightness(1.08);transform:translateY(-1px)}

/* ===== Responsive ===== */
@media screen and (max-width:1023px){
    .main-nav{display:none}
    .hamburger{display:flex}
    .nav-cta{display:none}
    .mobile-menu{display:flex}
    .hero{padding:60px 0}
    .hero h1{font-size:38px}
    .hero-right{margin-top:40px}
    .hero-badge-1{left:0}
    .hero-badge-2{right:0}
    .feature-row-1{flex-direction:column}
    .feature-banner{flex-direction:column;padding:28px}
    .scenario-row{flex-direction:column;gap:40px;margin-bottom:56px}
    .scenario-row.reverse{flex-direction:column}
    .section{padding:64px 0}
    .social-proof{margin:0}
    .footer-grid{gap:32px}
    .cta-card{padding:32px}
}
@media screen and (max-width:767px){
    body{font-size:15px}
    .container{padding:0 16px}
    .grid-container{padding-left:16px;padding-right:16px}
    .site-header,.header-inner{height:60px}
    .logo-text{font-size:19px}
    .logo-icon{width:38px;height:38px;font-size:17px}
    .hero{padding:40px 0}
    .hero h1{font-size:30px;line-height:1.35}
    .hero-subtitle{font-size:16px}
    .hero-buttons .btn{width:48%}
    .hero-buttons .btn{padding:14px 16px;font-size:14px}
    .hero-trust{font-size:12px;gap:8px}
    .hero-badge{display:none}
    .hero-media img{aspect-ratio:16/10}
    .section-title{font-size:26px}
    .feature-card{padding:24px}
    .feature-card h3{font-size:20px}
    .stats-grid{gap:32px}
    .stat-num{font-size:34px}
    .testimonial-card{min-width:100%}
    .news-card{flex-direction:column}
    .news-thumb{width:100%;height:140px}
    .news-thumb img{height:140px}
    .news-body{padding:16px}
    .custom-accordion .accordion-title{padding:16px 18px;font-size:15px}
    .custom-accordion .accordion-content{padding:16px 18px}
    .cta-card{flex-direction:column;align-items:flex-start;padding:24px}
    .cta-card .btn{width:100%;justify-content:center}
    .footer-grid{flex-direction:column;gap:24px}
    .footer-brand{min-width:100%}
    .footer-col{min-width:100%}
    .bottom-bar-inner{height:auto;min-height:60px;padding:8px 16px}
    .bottom-bar .bar-text{font-size:14px}
}

@media screen and (min-width:1024px){
    .mobile-menu{display:none!important}
}

/* roulang page: article */
:root {
  --color-primary: #e6542b;
  --color-primary-deep: #c9401a;
  --color-secondary: #1f4d44;
  --color-secondary-deep: #123028;
  --color-accent: #d9a64a;
  --color-bg: #faf7f2;
  --color-bg-alt: #f2ece3;
  --color-bg-dark: #14201c;
  --color-text: #202823;
  --color-text-secondary: #5b645f;
  --color-text-muted: #8b938e;
  --border-color: rgba(32, 40, 35, 0.12);
  --border-dark: rgba(255, 255, 255, 0.08);
  --radius-card: 16px;
  --radius-btn: 10px;
  --radius-input: 10px;
  --shadow-sm: 0 2px 12px rgba(20, 32, 28, 0.06);
  --shadow-hover: 0 10px 30px rgba(20, 32, 28, 0.12);
  --container-width: 1200px;
  --font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

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

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

input,
textarea {
  font-family: inherit;
}

ul,
ol {
  list-style: none;
}

.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius-btn);
  font-weight: 600;
  font-size: 15px;
  line-height: 1.2;
  text-decoration: none;
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: all .25s ease;
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

.btn-primary:hover {
  background: var(--color-primary-deep);
  border-color: var(--color-primary-deep);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

.btn-primary:active {
  transform: translateY(-1px);
  box-shadow: none;
}

.btn-outline {
  background: transparent;
  border-color: var(--color-secondary);
  color: var(--color-secondary);
}

.btn-outline:hover {
  background: var(--color-secondary);
  border-color: var(--color-secondary);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

.btn-accent {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-text);
}

.btn-accent:hover {
  background: #e4b55e;
  border-color: #e4b55e;
  color: var(--color-text);
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

.btn:focus-visible {
  outline: 3px solid rgba(230, 84, 43, 0.35);
  outline-offset: 2px;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: 72px;
  background: rgba(250, 247, 242, 0.94);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: border-color .3s ease, box-shadow .3s ease;
}

.site-header.scrolled {
  border-bottom-color: var(--border-color);
  box-shadow: 0 2px 20px rgba(20, 32, 28, 0.05);
}

.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.logo-icon {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: var(--color-secondary-deep);
  color: var(--color-accent);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}

.logo-text {
  font-size: 22px;
  font-weight: 800;
  color: var(--color-text);
  letter-spacing: .5px;
  white-space: nowrap;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.main-nav a {
  font-size: 16px;
  font-weight: 500;
  color: var(--color-text);
  text-decoration: none;
  padding: 6px 2px;
  position: relative;
  line-height: 1.4;
}

.main-nav a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -3px;
  width: 100%;
  height: 3px;
  border-radius: 4px;
  background: var(--color-primary);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .3s ease;
}

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

.main-nav a:hover::after {
  transform: scaleX(1);
}

.main-nav a.active {
  color: var(--color-primary);
  font-weight: 600;
}

.main-nav a.active::after {
  transform: scaleX(1);
}

.nav-cta {
  min-width: 130px;
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: 10px;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: var(--color-text);
  background: var(--color-bg-alt);
  transition: background .25s ease;
}

.menu-toggle:hover {
  background: var(--color-primary);
  color: #fff;
}

/* Mobile menu */
.mobile-menu {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 200;
  background: #fff;
  padding: 24px;
  flex-direction: column;
}

.mobile-menu.open {
  display: flex;
}

.mobile-menu-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 40px;
}

.mobile-menu-header .logo-text {
  font-size: 22px;
  font-weight: 800;
  color: var(--color-text);
}

.menu-close {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: var(--color-bg-alt);
  color: var(--color-text);
  font-size: 20px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: background .25s ease, color .25s ease;
}

.menu-close:hover {
  background: var(--color-primary);
  color: #fff;
}

.mobile-menu-list {
  flex: 1;
}

.mobile-menu-list li {
  border-bottom: 1px solid var(--color-bg-alt);
}

.mobile-menu-list a {
  display: block;
  font-size: 20px;
  font-weight: 600;
  color: var(--color-text);
  padding: 14px 0;
  line-height: 1.5;
}

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

.mobile-menu-list a.active {
  color: var(--color-primary);
}

.mobile-cta {
  width: 100%;
  margin-top: 24px;
}

/* Breadcrumb */
.breadcrumb {
  padding: 24px 0 4px;
  font-size: 13px;
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

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

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

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

.breadcrumb .current {
  color: var(--color-text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 420px;
  font-weight: 500;
}

/* Article page */
.article-page {
  max-width: 860px;
  margin: 0 auto;
  padding: 40px 0 72px;
}

.article-header {
  margin-bottom: 36px;
}

.article-category {
  display: inline-block;
  background: rgba(31, 77, 68, 0.1);
  color: var(--color-secondary);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 16px;
  border-radius: 999px;
  margin-bottom: 16px;
}

.article-title {
  font-size: 40px;
  font-weight: 800;
  line-height: 1.3;
  color: var(--color-text);
  margin-bottom: 18px;
  letter-spacing: .5px;
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 20px;
  color: var(--color-text-muted);
  font-size: 14px;
}

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

.article-summary {
  background: var(--color-bg-alt);
  border-radius: 12px;
  padding: 20px 24px;
  margin: 28px 0 36px;
  border-left: 4px solid var(--color-accent);
  color: var(--color-text-secondary);
  font-size: 16px;
  line-height: 1.75;
}

.article-summary p {
  margin: 0;
}

.article-body {
  font-size: 17px;
  line-height: 1.9;
  color: var(--color-text);
}

.article-body p {
  margin-bottom: 28px;
}

.article-body h2 {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-text);
  margin: 40px 0 16px;
  padding-left: 16px;
  border-left: 4px solid var(--color-primary);
  line-height: 1.4;
}

.article-body h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-text);
  margin: 32px 0 12px;
}

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

.article-body blockquote {
  background: var(--color-bg-alt);
  border-left: 4px solid var(--color-accent);
  border-radius: 0 12px 12px 0;
  padding: 20px 24px;
  margin: 28px 0;
  color: var(--color-text-secondary);
  font-size: 16px;
  line-height: 1.75;
}

.article-body ul,
.article-body ol {
  margin: 0 0 28px 20px;
}

.article-body ul li,
.article-body ol li {
  margin-bottom: 10px;
  padding-left: 4px;
}

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

.article-body a {
  color: var(--color-primary);
  font-weight: 500;
  border-bottom: 1px solid rgba(230, 84, 43, 0.3);
}

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

/* Article CTA */
.article-cta {
  background: rgba(230, 84, 43, 0.06);
  border-radius: var(--radius-card);
  padding: 32px 36px;
  margin-top: 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.article-cta h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 6px;
}

.article-cta p {
  color: var(--color-text-secondary);
  font-size: 15px;
  margin: 0;
}

/* Not found */
.not-found {
  max-width: 720px;
  margin: 64px auto 80px;
  text-align: center;
  background: #fff;
  border: 1px dashed var(--border-color);
  border-radius: var(--radius-card);
  padding: 72px 40px;
}

.not-found i {
  font-size: 48px;
  color: var(--color-text-muted);
  margin-bottom: 20px;
}

.not-found h1 {
  font-size: 32px;
  font-weight: 800;
  color: var(--color-text);
  margin-bottom: 12px;
}

.not-found p {
  font-size: 16px;
  color: var(--color-text-secondary);
  margin-bottom: 32px;
}

/* Related news */
.related-section {
  padding: 0 0 72px;
}

.section-title-wrap {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 32px;
}

.section-title-wrap h2 {
  font-size: 30px;
  font-weight: 800;
  color: var(--color-text);
}

.related-card-wrap {
  margin-bottom: 24px;
}

.related-card {
  background: #fff;
  border-radius: var(--radius-card);
  overflow: hidden;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  transition: transform .3s ease, box-shadow .3s ease;
  height: 100%;
  display: flex;
  flex-direction: column;
}

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

.related-card img {
  width: 100%;
  height: 180px;
  object-fit: cover;
}

.related-card-body {
  padding: 20px 24px 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.related-card-body h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.4;
  margin-bottom: 10px;
  transition: color .25s ease, transform .25s ease;
}

.related-card:hover .related-card-body h3 {
  color: var(--color-primary);
  transform: translateX(2px);
}

.related-card-body p {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.65;
  margin-bottom: 12px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.related-card-meta {
  font-size: 13px;
  color: var(--color-text-muted);
  margin-top: auto;
}

/* CTA banner */
.cta-banner {
  background: var(--color-bg-dark);
  border-radius: 24px;
  padding: 56px 64px;
  margin-bottom: 80px;
  position: relative;
  overflow: hidden;
}

.cta-banner::before {
  content: '';
  position: absolute;
  right: -60px;
  top: -60px;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  border: 32px solid rgba(217, 166, 74, 0.18);
  pointer-events: none;
}

.cta-banner::after {
  content: '';
  position: absolute;
  left: 30%;
  bottom: -40px;
  width: 140px;
  height: 140px;
  border-radius: 50%;
  background: rgba(230, 84, 43, 0.08);
  pointer-events: none;
}

.cta-banner-inner {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}

.cta-banner h2 {
  font-size: 32px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 8px;
}

.cta-banner p {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.7);
  margin: 0;
}

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

.faq-list {
  max-width: 860px;
  margin: 0 auto;
}

.faq-item {
  background: #fff;
  border-radius: var(--radius-card);
  border: 1px solid var(--border-color);
  margin-bottom: 16px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: box-shadow .3s ease;
}

.faq-item.active {
  box-shadow: var(--shadow-hover);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  min-height: 56px;
  cursor: pointer;
  font-size: 17px;
  font-weight: 600;
  color: var(--color-text);
  width: 100%;
  text-align: left;
  background: transparent;
}

.faq-question:hover {
  color: var(--color-primary);
}

.faq-question .faq-icon {
  color: var(--color-primary);
  font-size: 18px;
  flex-shrink: 0;
  transition: transform .3s ease;
}

.faq-item.active .faq-question .faq-icon {
  transform: rotate(45deg);
}

.faq-answer {
  display: none;
  padding: 0 24px 20px;
  background: var(--color-bg-alt);
  font-size: 15px;
  line-height: 1.75;
  color: var(--color-text-secondary);
}

.faq-item.active .faq-answer {
  display: block;
  padding: 20px 24px;
}

/* Footer */
.site-footer {
  background: var(--color-bg-dark);
  color: rgba(255, 255, 255, 0.7);
  padding: 64px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
}

.footer-brand .logo {
  margin-bottom: 20px;
}

.footer-brand .logo-icon {
  background: var(--color-accent);
  color: var(--color-secondary-deep);
}

.footer-brand .logo-text {
  color: #fff;
}

.footer-brand p {
  font-size: 15px;
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.6);
  max-width: 340px;
  margin: 0;
}

.footer-col h4 {
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 20px;
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-col ul li {
  font-size: 15px;
}

.footer-col ul a {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  transition: color .25s ease;
}

.footer-col ul a:hover {
  color: #fff;
}

.footer-contact li {
  display: flex;
  align-items: center;
  gap: 10px;
  color: rgba(255, 255, 255, 0.7);
  font-size: 15px;
}

.footer-contact i {
  color: var(--color-accent);
  font-size: 14px;
  width: 18px;
  text-align: center;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 20px 0;
  text-align: center;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.4);
}

.footer-bottom p {
  margin: 0;
}

/* Responsive */
@media (max-width: 1023px) {
  .main-nav {
    display: none;
  }

  .nav-cta {
    display: none;
  }

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

  .mobile-menu {
    display: none;
  }

  .mobile-menu.open {
    display: flex;
  }

  .article-title {
    font-size: 32px;
  }

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

  .cta-banner {
    padding: 48px 36px;
  }

  .cta-banner h2 {
    font-size: 26px;
  }
}

@media (max-width: 767px) {
  .header-inner,
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }

  .site-header {
    height: 60px;
  }

  .logo-text {
    font-size: 18px;
  }

  .logo-icon {
    width: 36px;
    height: 36px;
    font-size: 16px;
    border-radius: 10px;
  }

  .article-page {
    padding: 28px 0 56px;
  }

  .breadcrumb .current {
    max-width: 180px;
  }

  .article-title {
    font-size: 26px;
    line-height: 1.35;
  }

  .article-meta {
    flex-wrap: wrap;
    gap: 10px 16px;
  }

  .article-summary {
    padding: 16px 18px;
    font-size: 15px;
  }

  .article-body {
    font-size: 16px;
    line-height: 1.85;
  }

  .article-body h2 {
    font-size: 21px;
  }

  .article-body h3 {
    font-size: 18px;
  }

  .article-cta {
    padding: 24px;
    flex-direction: column;
    align-items: flex-start;
  }

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

  .not-found {
    padding: 48px 24px;
    margin: 32px auto 56px;
  }

  .section-title-wrap h2 {
    font-size: 24px;
  }

  .related-card img {
    height: 160px;
  }

  .cta-banner {
    padding: 36px 24px;
    margin-bottom: 56px;
    border-radius: 16px;
  }

  .cta-banner h2 {
    font-size: 22px;
  }

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

  .cta-banner-inner {
    flex-direction: column;
    gap: 20px;
  }

  .faq-question {
    padding: 16px 18px;
    font-size: 15px;
    min-height: 48px;
  }

  .faq-answer {
    padding: 0 18px 16px;
    font-size: 14px;
  }

  .faq-item.active .faq-answer {
    padding: 16px 18px;
  }

  .site-footer {
    padding: 48px 0 0;
  }

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

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

@media (max-width: 520px) {
  .related-card-wrap {
    padding: 0 16px !important;
  }

  .breadcrumb {
    font-size: 12px;
    gap: 6px;
  }

  .breadcrumb .current {
    max-width: 130px;
  }
}

/* roulang page: category1 */
:root {
  --color-primary: #e6542b;
  --color-primary-deep: #c9401a;
  --color-secondary: #1f4d44;
  --color-secondary-deep: #123028;
  --color-accent: #d9a64a;
  --color-bg: #faf7f2;
  --color-bg-alt: #f2ece3;
  --color-bg-dark: #14201c;
  --color-text: #202823;
  --color-text-secondary: #5b645f;
  --color-text-muted: #8b938e;
  --color-card-border: rgba(32,40,35,0.12);
  --color-white: #ffffff;
  --radius-card: 16px;
  --radius-btn: 10px;
  --radius-sm: 8px;
  --shadow-sm: 0 2px 12px rgba(20,32,28,0.06);
  --shadow-lg: 0 10px 30px rgba(20,32,28,0.12);
  --container-w: 1200px;
  --header-h: 72px;
  --font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --section-space: 96px;
}

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

html {
  scroll-behavior: smooth;
}

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

img {
  max-width: 100%;
  display: block;
  border-radius: var(--radius-card);
}

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

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

ul,
ol {
  list-style: none;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  line-height: 1.35;
  font-weight: 800;
  color: var(--color-text);
}

p {
  margin-bottom: 1rem;
}

.container {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 24px;
}

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

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius-btn);
  font-weight: 600;
  font-size: 16px;
  line-height: 1.2;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all 0.25s ease;
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

.btn-primary:hover {
  background: var(--color-primary-deep);
  border-color: var(--color-primary-deep);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-primary:active {
  transform: translateY(1px);
}

.btn-outline {
  background: transparent;
  color: var(--color-secondary);
  border-color: var(--color-secondary);
}

.btn-outline:hover {
  background: var(--color-secondary);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.btn-accent {
  background: var(--color-accent);
  color: var(--color-secondary-deep);
  border-color: var(--color-accent);
}

.btn-accent:hover {
  background: #e3b45f;
  border-color: #e3b45f;
  color: var(--color-secondary-deep);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.55);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.22);
  color: #fff;
  transform: translateY(-2px);
}

.btn-white {
  background: #fff;
  color: var(--color-primary);
  border-color: #fff;
}

.btn-white:hover {
  background: var(--color-bg-alt);
  color: var(--color-primary-deep);
}

.btn-lg {
  padding: 16px 34px;
  font-size: 17px;
}

.btn-block {
  width: 100%;
}

.btn i {
  font-size: 14px;
}

/* ===== 标签 ===== */
.section-tag {
  display: inline-block;
  padding: 5px 16px;
  border-radius: 999px;
  background: rgba(230, 84, 43, 0.1);
  color: var(--color-primary);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.5px;
  margin-bottom: 14px;
}

.section-tag-light {
  background: rgba(217, 166, 74, 0.16);
  color: var(--color-accent);
}

/* ===== 区块标题 ===== */
.section-head {
  max-width: 640px;
  margin-bottom: 48px;
}

.section-head h2 {
  font-size: 34px;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 12px;
}

.section-head p {
  font-size: 16px;
  color: var(--color-text-secondary);
}

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 999;
  background: rgba(250, 247, 242, 0.94);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  height: var(--header-h);
  transition: box-shadow 0.3s ease;
}

.site-header.scrolled {
  box-shadow: 0 1px 0 rgba(32, 40, 35, 0.08);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-h);
  gap: 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 22px;
  font-weight: 800;
  color: var(--color-text);
  flex-shrink: 0;
}

.logo-icon {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: var(--color-primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}

.logo-text {
  white-space: nowrap;
}

.main-nav {
  display: flex;
  gap: 28px;
}

.main-nav a {
  font-size: 16px;
  font-weight: 500;
  color: var(--color-text);
  padding: 8px 0;
  position: relative;
  transition: color 0.25s ease;
}

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

.main-nav a.active {
  color: var(--color-primary);
}

.main-nav a.active::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 3px;
  background: var(--color-primary);
  border-radius: 3px 3px 0 0;
}

.nav-cta {
  min-width: 130px;
  padding: 12px 22px !important;
  font-size: 15px;
}

.mobile-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: 10px;
  font-size: 20px;
  background: var(--color-bg-alt);
  color: var(--color-text);
  border: none;
  cursor: pointer;
  align-items: center;
  justify-content: center;
}

/* ===== 移动端菜单 ===== */
.mobile-menu {
  position: fixed;
  inset: 0;
  background: #fff;
  z-index: 1200;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 28px;
  transform: translateX(100%);
  transition: transform 0.35s ease;
  visibility: hidden;
}

.mobile-menu.open {
  transform: translateX(0);
  visibility: visible;
}

.mobile-menu nav {
  display: flex;
  flex-direction: column;
  gap: 24px;
  text-align: center;
}

.mobile-menu nav a {
  font-size: 20px;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.4;
}

.mobile-menu nav a.active {
  color: var(--color-primary);
}

.mobile-menu-close {
  position: fixed;
  top: 16px;
  right: 16px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-bg-alt);
  color: var(--color-text);
  font-size: 18px;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

.mobile-menu-cta {
  max-width: 240px;
  margin-top: 8px;
}

/* ===== 面包屑 ===== */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--color-text-muted);
  margin-bottom: 20px;
}

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

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

.breadcrumb .sep {
  color: rgba(32, 40, 35, 0.3);
}

/* ===== Hero ===== */
.cat-hero {
  position: relative;
  padding: 72px 0 80px;
  overflow: hidden;
  background: var(--color-bg);
}

.cat-hero::before {
  content: "";
  position: absolute;
  top: -120px;
  right: -80px;
  width: 380px;
  height: 380px;
  border-radius: 50%;
  border: 70px solid rgba(230, 84, 43, 0.07);
  pointer-events: none;
}

.cat-hero::after {
  content: "";
  position: absolute;
  left: 42%;
  bottom: -30px;
  width: 220px;
  height: 220px;
  background-image: radial-gradient(rgba(31, 77, 68, 0.12) 1px, transparent 1px);
  background-size: 18px 18px;
  pointer-events: none;
}

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

.cat-hero h1 {
  font-size: 46px;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 18px;
  letter-spacing: 1px;
}

.hero-desc {
  font-size: 18px;
  line-height: 1.8;
  color: var(--color-text-secondary);
  max-width: 540px;
  margin-bottom: 32px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 32px;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 14px;
  color: var(--color-text-muted);
}

.hero-meta li {
  display: flex;
  align-items: center;
}

.hero-meta li + li::before {
  content: "·";
  margin-right: 8px;
  color: rgba(32, 40, 35, 0.3);
}

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

.hero-image-wrap {
  position: relative;
  padding: 10px;
  background: linear-gradient(145deg, rgba(230, 84, 43, 0.08), rgba(31, 77, 68, 0.05));
  border: 1px solid rgba(230, 84, 43, 0.18);
  border-radius: 22px;
}

.hero-image-wrap img {
  width: 100%;
  height: 380px;
  object-fit: cover;
  border-radius: 16px;
}

.float-badge {
  position: absolute;
  background: rgba(255, 255, 255, 0.96);
  border-radius: 12px;
  box-shadow: var(--shadow-lg);
  padding: 12px 18px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  backdrop-filter: blur(4px);
}

.badge-top {
  top: -16px;
  left: -18px;
}

.badge-bottom {
  bottom: 28px;
  right: -14px;
}

.badge-num {
  font-size: 22px;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1.2;
}

.badge-label {
  font-size: 12px;
  color: var(--color-text-secondary);
  margin-top: 2px;
}

/* ===== Intro ===== */
.cat-intro {
  background: var(--color-bg);
  padding: var(--section-space) 0;
}

.intro-media img {
  width: 100%;
  height: 420px;
  object-fit: cover;
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-sm);
}

.intro-copy {
  padding-left: 24px;
}

.intro-copy h2 {
  font-size: 32px;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 18px;
}

.intro-copy p {
  font-size: 16px;
  line-height: 1.85;
  color: var(--color-text-secondary);
  margin-bottom: 16px;
}

.intro-copy .btn {
  margin-top: 12px;
}

/* ===== Features ===== */
.cat-features {
  background: var(--color-bg-alt);
  padding: var(--section-space) 0;
}

.features-head {
  max-width: 640px;
  margin-bottom: 48px;
}

.features-head h2 {
  font-size: 32px;
  font-weight: 800;
  line-height: 1.3;
}

.features-grid {
  align-items: stretch;
}

.feature-card {
  background: #fff;
  border-radius: var(--radius-card);
  padding: 36px;
  border: 1px solid var(--color-card-border);
  box-shadow: var(--shadow-sm);
  transition: all 0.3s ease;
  height: 100%;
  position: relative;
}

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

.feature-card-lg {
  padding: 40px;
  min-height: 320px;
}

.feature-card-sm {
  padding: 36px 32px;
  min-height: 260px;
  margin-top: 60px;
}

.feature-card-wide {
  padding: 40px;
  margin-top: 16px;
  background: linear-gradient(135deg, #ffffff 0%, #fdf6ef 100%);
}

.feature-icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: rgba(230, 84, 43, 0.12);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-bottom: 22px;
}

.feature-card h3 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 12px;
}

.feature-card p {
  font-size: 15px;
  line-height: 1.8;
  color: var(--color-text-secondary);
  margin-bottom: 16px;
}

.feature-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-primary);
}

.feature-link i {
  font-size: 12px;
  transition: transform 0.25s ease;
}

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

.wide-inner {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
}

.wide-inner .wide-copy {
  max-width: 70%;
}

.wide-data {
  display: flex;
  gap: 32px;
  justify-content: flex-end;
}

.data-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 14px 18px;
  background: rgba(31, 77, 68, 0.05);
  border-radius: 12px;
}

.data-num {
  font-size: 28px;
  font-weight: 800;
  color: var(--color-secondary);
}

.data-label {
  font-size: 13px;
  color: var(--color-text-secondary);
  margin-top: 2px;
}

/* ===== Scenarios ===== */
.cat-scenarios {
  background: var(--color-bg);
  padding: var(--section-space) 0;
}

.scenarios-head {
  max-width: 680px;
  margin-bottom: 48px;
}

.scenarios-head h2 {
  font-size: 32px;
  font-weight: 800;
  line-height: 1.3;
}

.scenario-list {
  margin-bottom: 56px;
}

.scenario-item {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  background: #fff;
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-card);
  padding: 28px 30px;
  height: 100%;
  transition: all 0.25s ease;
}

.scenario-item:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.scenario-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: rgba(31, 77, 68, 0.08);
  color: var(--color-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}

.scenario-copy h3 {
  font-size: 19px;
  font-weight: 700;
  margin-bottom: 6px;
}

.scenario-copy p {
  font-size: 15px;
  line-height: 1.75;
  color: var(--color-text-secondary);
  margin-bottom: 0;
}

.scenario-gallery {
  margin-top: 24px;
}

.gallery-top {
  margin-bottom: 20px;
}

.gallery-top .cell img {
  width: 100%;
  height: 280px;
  object-fit: cover;
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-sm);
}

.gallery-bottom {
  display: flex;
  justify-content: flex-end;
}

.gallery-bottom img {
  width: 83.3333%;
  height: 260px;
  object-fit: cover;
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-sm);
}

/* ===== Process ===== */
.cat-process {
  background: var(--color-bg-dark);
  padding: var(--section-space) 0;
  color: #fff;
}

.process-head {
  max-width: 640px;
  margin-bottom: 56px;
}

.process-head h2 {
  color: #fff;
  font-size: 32px;
  font-weight: 800;
}

.process-head p {
  color: rgba(255, 255, 255, 0.55);
}

.process-steps {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
}

.process-step {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-card);
  padding: 28px 24px;
  transition: all 0.3s ease;
  position: relative;
}

.process-step:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-4px);
}

.step-num {
  font-size: 32px;
  font-weight: 800;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: 16px;
  opacity: 0.85;
}

.process-step h3 {
  font-size: 17px;
  color: #fff;
  margin-bottom: 10px;
  font-weight: 700;
}

.process-step p {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: 0;
}

/* ===== Stats ===== */
.cat-stats {
  background: var(--color-bg);
  padding: var(--section-space) 0;
}

.stats-panel {
  background: var(--color-secondary-deep);
  border-radius: 24px;
  padding: 56px;
  color: #fff;
  position: relative;
  overflow: hidden;
}

.stats-panel::before {
  content: "";
  position: absolute;
  top: -60px;
  right: -60px;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  border: 40px solid rgba(217, 166, 74, 0.12);
}

.stats-head {
  margin-bottom: 40px;
}

.stats-head h2 {
  color: #fff;
  font-size: 30px;
  font-weight: 800;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
}

.stat-item {
  text-align: center;
  padding: 20px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-card);
  transition: all 0.25s ease;
}

.stat-item:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-3px);
}

.stat-num {
  font-size: 38px;
  font-weight: 800;
  color: var(--color-accent);
  line-height: 1.2;
}

.stat-label {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  margin-top: 8px;
}

/* ===== News Strip ===== */
.cat-news {
  background: var(--color-bg-alt);
  padding: 56px 0;
}

.news-strip {
  display: flex;
  align-items: center;
  gap: 24px;
  background: #fff;
  border-radius: var(--radius-card);
  padding: 32px 36px;
  border: 1px solid var(--color-card-border);
  box-shadow: var(--shadow-sm);
  flex-wrap: wrap;
}

.news-icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: rgba(230, 84, 43, 0.1);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  flex-shrink: 0;
}

.news-content {
  flex: 1;
  min-width: 240px;
}

.news-content h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 4px;
}

.news-content p {
  font-size: 15px;
  color: var(--color-text-secondary);
  margin-bottom: 0;
}

/* ===== FAQ ===== */
.cat-faq {
  background: var(--color-bg);
  padding: var(--section-space) 0;
}

.faq-head {
  max-width: 640px;
  margin-bottom: 44px;
}

.faq-head h2 {
  font-size: 32px;
  font-weight: 800;
}

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

.faq-item {
  background: #fff;
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-card);
  margin-bottom: 14px;
  overflow: hidden;
  transition: box-shadow 0.25s ease;
}

.faq-item[open] {
  box-shadow: var(--shadow-sm);
  border-color: rgba(230, 84, 43, 0.25);
}

.faq-item summary {
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  cursor: pointer;
  transition: color 0.2s;
}

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

.faq-item summary:hover {
  color: var(--color-primary);
}

.faq-item summary .faq-text {
  flex: 1;
}

.faq-item .faq-icon {
  font-size: 16px;
  color: var(--color-primary);
  flex-shrink: 0;
  transition: transform 0.3s ease;
}

.faq-item[open] .faq-icon {
  transform: rotate(45deg);
}

.faq-item p {
  padding: 0 24px 20px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--color-text-secondary);
  margin-bottom: 0;
}

/* ===== CTA ===== */
.cat-cta {
  background: var(--color-bg-alt);
  padding: var(--section-space) 0;
}

.cta-panel {
  background: linear-gradient(135deg, var(--color-secondary-deep) 0%, var(--color-secondary) 100%);
  border-radius: 24px;
  padding: 48px 56px;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
  position: relative;
  overflow: hidden;
}

.cta-panel::after {
  content: "";
  position: absolute;
  right: -40px;
  bottom: -40px;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  border: 30px solid rgba(217, 166, 74, 0.1);
}

.cta-copy {
  max-width: 520px;
  position: relative;
  z-index: 1;
}

.cta-copy h2 {
  color: #fff;
  font-size: 30px;
  font-weight: 800;
  margin-bottom: 8px;
}

.cta-copy p {
  color: rgba(255, 255, 255, 0.7);
  font-size: 15px;
  margin-bottom: 0;
}

.cta-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--color-bg-dark);
  color: rgba(255, 255, 255, 0.6);
  padding-top: 64px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 40% 25% 35%;
  gap: 40px;
  padding-bottom: 48px;
}

.footer-brand .logo {
  color: #fff;
  margin-bottom: 16px;
  display: inline-flex;
}

.footer-brand .logo-text {
  color: #fff;
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.85;
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: 0;
}

.footer-col h4 {
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 18px;
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-col ul li {
  font-size: 14px;
  line-height: 1.6;
}

.footer-col ul a {
  color: rgba(255, 255, 255, 0.7);
  transition: color 0.2s;
}

.footer-col ul a:hover {
  color: #fff;
}

.footer-contact li {
  display: flex;
  align-items: center;
  gap: 10px;
  color: rgba(255, 255, 255, 0.7);
}

.footer-contact i {
  color: var(--color-accent);
  width: 18px;
  text-align: center;
  flex-shrink: 0;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 22px 0;
  text-align: center;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.4);
}

.footer-bottom p {
  margin-bottom: 0;
}

/* ===== 焦点可访问性 ===== */
a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 3px solid rgba(230, 84, 43, 0.4);
  outline-offset: 2px;
  border-radius: 4px;
}

/* ===== 响应式 ===== */
@media (max-width: 1023px) {
  :root {
    --header-h: 60px;
    --section-space: 64px;
  }

  .main-nav {
    display: none;
  }

  .nav-cta {
    display: none;
  }

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

  .cat-hero {
    padding: 56px 0 64px;
  }

  .cat-hero h1 {
    font-size: 36px;
  }

  .hero-image-wrap img {
    height: 340px;
  }

  .intro-copy {
    padding-left: 0;
    margin-top: 28px;
  }

  .feature-card-lg,
  .feature-card-sm,
  .feature-card-wide {
    min-height: auto;
  }

  .feature-card-sm {
    margin-top: 16px;
  }

  .wide-inner .wide-copy {
    max-width: 100%;
  }

  .wide-data {
    justify-content: flex-start;
    margin-top: 20px;
  }

  .gallery-bottom img {
    width: 100%;
  }

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

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

  .stats-panel {
    padding: 40px 32px;
  }

  .gallery-top .cell img {
    height: 200px;
  }

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

  .footer-brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 767px) {
  body {
    font-size: 15px;
  }

  .container {
    padding: 0 16px;
  }

  section {
    --section-space: 56px;
  }

  .cat-hero h1 {
    font-size: 32px;
  }

  .hero-desc {
    font-size: 16px;
  }

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

  .hero-meta {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }

  .hero-meta li + li::before {
    content: none;
  }

  .hero-image-wrap img {
    height: 260px;
  }

  .float-badge {
    padding: 10px 14px;
  }

  .badge-top {
    left: -6px;
    top: -12px;
  }

  .badge-bottom {
    right: -6px;
    bottom: 16px;
  }

  .badge-num {
    font-size: 18px;
  }

  .intro-media img {
    height: 260px;
  }

  .intro-copy h2,
  .features-head h2,
  .scenarios-head h2,
  .process-head h2,
  .stats-head h2,
  .faq-head h2 {
    font-size: 26px;
  }

  .feature-card-lg,
  .feature-card-sm,
  .feature-card-wide {
    padding: 24px;
  }

  .feature-card p {
    font-size: 14px;
  }

  .wide-data {
    flex-direction: column;
    gap: 14px;
  }

  .data-item {
    flex-direction: row;
    justify-content: space-between;
    width: 100%;
    padding: 12px 16px;
  }

  .scenario-item {
    flex-direction: column;
    padding: 24px;
    gap: 14px;
  }

  .scenario-copy h3 {
    font-size: 18px;
  }

  .gallery-top .cell img,
  .gallery-bottom img {
    height: 180px;
    margin-bottom: 12px;
  }

  .gallery-bottom img {
    width: 100%;
    margin-bottom: 0;
  }

  .process-steps {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .process-step {
    padding: 20px;
  }

  .step-num {
    font-size: 26px;
    margin-bottom: 10px;
  }

  .stats-panel {
    padding: 32px 20px;
    border-radius: 16px;
  }

  .stat-num {
    font-size: 32px;
  }

  .news-strip {
    padding: 24px;
    flex-direction: column;
    align-items: flex-start;
  }

  .news-icon {
    width: 48px;
    height: 48px;
    font-size: 18px;
  }

  .news-strip .btn {
    width: 100%;
  }

  .cat-faq .faq-item summary {
    padding: 16px 18px;
    font-size: 15px;
  }

  .faq-item p {
    padding: 0 18px 16px;
    font-size: 14px;
  }

  .cta-panel {
    padding: 32px 24px;
    flex-direction: column;
    align-items: flex-start;
    border-radius: 16px;
  }

  .cta-copy h2 {
    font-size: 26px;
  }

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

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

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