/* roulang page: index */
:root {
    --primary: #0B1F2A;
    --primary-light: #14323f;
    --accent: #D4A245;
    --accent-light: #E5B85C;
    --accent-dark: #b8893a;
    --success: #1FA88E;
    --bg-light: #F5F1E8;
    --bg-dark: #08151C;
    --white: #FFFFFF;
    --text-primary: #1a2b36;
    --text-secondary: #5a6b76;
    --text-muted: #7A8B94;
    --border-color: #e4ddd0;
    --radius-sm: 10px;
    --radius-md: 16px;
    --radius-lg: 22px;
    --radius-full: 999px;
    --shadow-sm: 0 2px 8px rgba(11,31,42,0.06);
    --shadow-md: 0 8px 24px rgba(11,31,42,0.08);
    --shadow-lg: 0 14px 36px rgba(11,31,42,0.14);
    --font-sans: 'PingFang SC','Microsoft YaHei','Helvetica Neue',Arial,sans-serif;
    --section-gap: 96px;
    --container-max: 1200px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font-sans);background:var(--bg-light);color:var(--text-primary);line-height:1.8;font-size:16px;overflow-x:hidden}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:color .3s}
button{font-family:inherit;border:none;cursor:pointer}
.container{max-width:var(--container-max);padding-left:20px;padding-right:20px}
.section-pad{padding:var(--section-gap) 0}
.section-head{text-align:center;margin-bottom:54px}
.section-head h2{font-weight:700;font-size:2rem;color:var(--primary);letter-spacing:-0.02em;margin-bottom:8px}
.section-head p{color:var(--text-secondary);font-size:1rem;max-width:620px;margin:0 auto}
.section-head .sub-line{display:inline-block;width:42px;height:3px;background:var(--accent);border-radius:2px;margin-bottom:14px}

/* Header */
.site-header{position:fixed;top:0;left:0;right:0;z-index:1000;background:rgba(255,255,255,0.98);backdrop-filter:blur(10px);transition:box-shadow .3s,background .3s;border-bottom:1px solid transparent}
.site-header.scrolled{box-shadow:0 4px 24px rgba(11,31,42,0.08);border-bottom-color:rgba(11,31,42,0.06)}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:14px 0}
.brand-logo{font-size:1.35rem;font-weight:800;color:var(--primary);letter-spacing:-0.02em;display:flex;align-items:center;gap:4px}
.brand-logo span{color:var(--accent)}
.main-nav{display:flex;align-items:center;gap:32px}
.main-nav a.nav-link{padding:6px 2px;position:relative;color:var(--text-secondary);font-weight:500;font-size:.94rem;transition:color .3s}
.main-nav a.nav-link::after{content:'';position:absolute;left:0;bottom:0;width:0;height:2px;background:var(--accent);transition:width .35s}
.main-nav a.nav-link:hover{color:var(--primary)}
.main-nav a.nav-link:hover::after{width:100%}
.main-nav a.nav-link.active{color:var(--primary);font-weight:600}
.main-nav a.nav-link.active::after{width:100%}
.btn-primary{display:inline-flex;align-items:center;justify-content:center;gap:6px;height:44px;padding:0 28px;background:var(--accent);color:var(--primary);font-weight:600;border-radius:var(--radius-full);font-size:.94rem;transition:background .3s,transform .3s,box-shadow .3s;white-space:nowrap}
.btn-primary:hover{background:var(--accent-light);transform:translateY(-2px);box-shadow:0 8px 20px rgba(212,162,69,0.3);color:var(--primary)}
.btn-outline{display:inline-flex;align-items:center;justify-content:center;gap:6px;height:44px;padding:0 28px;background:transparent;color:var(--white);font-weight:600;border-radius:var(--radius-full);font-size:.94rem;border:1.5px solid rgba(255,255,255,0.6);transition:all .3s}
.btn-outline:hover{border-color:var(--accent-light);color:var(--accent-light);background:rgba(255,255,255,0.08)}
.header-cta{margin-left:12px}
.nav-toggle{display:none;background:none;font-size:1.4rem;color:var(--primary);padding:4px 8px}

/* Mobile bottom nav */
.mobile-bottom-nav{display:none;position:fixed;bottom:0;left:0;right:0;z-index:999;background:var(--white);border-top:1px solid rgba(11,31,42,0.08);padding:6px 0;box-shadow:0 -4px 24px rgba(11,31,42,0.08)}
.mobile-bottom-nav .mb-item{display:flex;flex-direction:column;align-items:center;gap:2px;padding:6px 4px;color:var(--text-secondary);font-size:.7rem;font-weight:500;transition:color .3s}
.mobile-bottom-nav .mb-item i{font-size:1.15rem}
.mobile-bottom-nav .mb-item.active{color:var(--accent);background:rgba(212,162,69,0.12);border-radius:var(--radius-full)}
.mobile-bottom-nav .mb-item:hover{color:var(--accent)}

/* Hero */
.hero-wrapper{position:relative;min-height:100vh;display:flex;align-items:center;background:url('/assets/images/backpic/back-1.png') center center / cover no-repeat;padding-top:120px;padding-bottom:80px}
.hero-wrapper::before{content:'';position:absolute;top:0;left:0;right:0;bottom:0;background:linear-gradient(120deg,rgba(8,21,28,0.88) 40%,rgba(8,21,28,0.55) 70%,rgba(8,21,28,0.35))}
.hero-content{position:relative;z-index:2;max-width:720px}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:rgba(212,162,69,0.2);color:var(--accent-light);padding:6px 16px;border-radius:var(--radius-full);font-size:.78rem;font-weight:500;letter-spacing:.03em;margin-bottom:22px;border:1px solid rgba(212,162,69,0.3)}
.hero-badge i{font-size:.8rem}
.hero-wrapper h1{font-size:2.7rem;font-weight:800;color:var(--white);line-height:1.3;letter-spacing:-0.02em;margin-bottom:16px}
.hero-wrapper h1 .highlight{color:var(--accent-light)}
.hero-desc{font-size:1.12rem;color:rgba(255,255,255,0.82);line-height:1.8;max-width:580px;margin-bottom:34px}
.hero-actions{display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.hero-stats{display:flex;gap:34px;margin-top:48px;flex-wrap:wrap}
.hero-stats .stat-item{color:rgba(255,255,255,0.75)}
.hero-stats .stat-num{font-size:1.5rem;font-weight:700;color:var(--accent-light);font-family:inherit}
.hero-stats .stat-label{font-size:.8rem;color:rgba(255,255,255,0.55);letter-spacing:.03em}

/* Trust bar */
.trust-bar{background:var(--white);border-bottom:1px solid var(--border-color);padding:28px 0}
.trust-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.trust-item{display:flex;align-items:center;gap:14px}
.trust-item .trust-icon{width:44px;height:44px;border-radius:12px;background:rgba(212,162,69,0.12);color:var(--accent);display:flex;align-items:center;justify-content:center;font-size:1.05rem;flex-shrink:0}
.trust-item .trust-text{font-weight:600;color:var(--text-primary);font-size:.92rem}
.trust-item .trust-sub{font-size:.78rem;color:var(--text-muted)}

/* Steps */
.steps-section{background:var(--white)}
.steps-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:30px}
.step-card{background:var(--bg-light);border-radius:var(--radius-lg);padding:32px 28px;position:relative;transition:transform .4s,box-shadow .3s;border:1px solid transparent}
.step-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg);background:var(--white)}
.step-num{font-size:2.8rem;font-weight:800;color:var(--accent);opacity:0.35;line-height:1;margin-bottom:16px;font-family:Georgia,serif}
.step-card h3{font-size:1.2rem;font-weight:700;color:var(--primary);margin-bottom:10px}
.step-card p{color:var(--text-secondary);font-size:.9rem;line-height:1.7}
.step-card-img{border-radius:12px;overflow:hidden;margin-bottom:20px;height:140px;object-fit:cover;width:100%}
.step-tag{display:inline-block;background:rgba(31,168,142,0.12);color:var(--success);font-size:.75rem;padding:4px 12px;border-radius:var(--radius-full);font-weight:600;margin-bottom:12px}

/* Stories */
.stories-section{background:var(--bg-light)}
.stories-wrapper{display:grid;grid-template-columns:1fr 1.4fr;gap:60px;align-items:center}
.stories-intro h2{font-size:2.1rem;font-weight:800;color:var(--primary);line-height:1.3;margin-bottom:12px}
.stories-intro p{color:var(--text-secondary);font-size:.98rem;margin-bottom:24px;max-width:360px}
.stories-intro .btn-cts{display:inline-flex;align-items:center;gap:8px;background:var(--primary);color:var(--white);padding:10px 26px;border-radius:var(--radius-full);font-weight:600;font-size:.9rem;transition:background .3s,transform .3s}
.stories-intro .btn-cts:hover{background:var(--primary-light);transform:translateX(4px);color:var(--white)}
.testimonial-list{display:flex;flex-direction:column;gap:22px}
.testimonial-card{background:var(--white);border-radius:var(--radius-md);padding:28px 26px;box-shadow:var(--shadow-sm);border:1px solid rgba(11,31,42,0.04)}
.testimonial-card.alt{background:rgba(212,162,69,0.06);border:1px solid rgba(212,162,69,0.2);box-shadow:none}
.testimonial-card .t-head{display:flex;align-items:center;gap:14px;margin-bottom:14px}
.testimonial-card .t-avatar{width:46px;height:46px;border-radius:50%;background:var(--primary);color:var(--white);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:1rem}
.testimonial-card.alt .t-avatar{background:var(--accent);color:var(--primary)}
.testimonial-card .t-name{font-weight:600;color:var(--text-primary);font-size:.95rem}
.testimonial-card .t-time{font-size:.75rem;color:var(--text-muted)}
.testimonial-card .t-text{color:var(--text-secondary);font-size:.9rem;line-height:1.75}
.testimonial-card .t-rating{color:var(--accent);font-size:.85rem;margin-bottom:8px;letter-spacing:2px}

/* FAQ */
.faq-section{background:var(--white)}
.faq-list{max-width:820px;margin:0 auto}
.faq-item{border:1px solid var(--border-color);border-radius:var(--radius-md);margin-bottom:14px;overflow:hidden;background:var(--white);transition:box-shadow .3s,border-color .3s}
.faq-item:hover{box-shadow:var(--shadow-sm);border-color:rgba(212,162,69,0.3)}
.faq-item.active{border-color:rgba(212,162,69,0.4);box-shadow:var(--shadow-sm)}
.faq-header{display:flex;justify-content:space-between;align-items:center;padding:20px 24px;cursor:pointer;gap:16px}
.faq-header h3{font-size:1.02rem;font-weight:600;color:var(--primary);margin:0}
.faq-icon{width:28px;height:28px;border-radius:50%;background:rgba(212,162,69,0.12);color:var(--accent);display:flex;align-items:center;justify-content:center;font-size:.8rem;transition:transform .4s,background .3s;flex-shrink:0}
.faq-item.active .faq-icon{transform:rotate(45deg);background:var(--accent);color:var(--white)}
.faq-body{padding:0 24px;max-height:0;overflow:hidden;transition:max-height .4s ease;color:var(--text-secondary);font-size:.9rem;line-height:1.75}
.faq-item.active .faq-body{padding-bottom:20px;max-height:300px}

/* News */
.news-section{background:var(--bg-light)}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:30px}
.news-card{background:var(--white);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-sm);transition:transform .4s,box-shadow .3s;border:1px solid rgba(11,31,42,0.04)}
.news-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg)}
.news-card-img{position:relative;overflow:hidden;height:190px}
.news-card-img img{width:100%;height:100%;object-fit:cover;transition:transform .6s ease}
.news-card:hover .news-card-img img{transform:scale(1.03)}
.news-card-img::after{content:'';position:absolute;top:0;left:0;right:0;bottom:0;background:linear-gradient(180deg,transparent 60%,rgba(8,21,28,0.3))}
.news-badge{position:absolute;top:14px;left:14px;background:rgba(212,162,69,0.92);color:var(--primary);font-size:.72rem;font-weight:700;padding:4px 14px;border-radius:var(--radius-full);z-index:2;letter-spacing:.04em}
.news-card-body{padding:22px 22px 20px}
.news-card-body h3{font-size:1.05rem;font-weight:600;color:var(--primary);line-height:1.5;margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card-body p{font-size:.87rem;color:var(--text-secondary);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:16px}
.news-meta{display:flex;justify-content:space-between;align-items:center;font-size:.78rem;color:var(--text-muted);border-top:1px solid #f0ece4;padding-top:14px}
.news-meta .read-more{color:var(--accent);font-weight:600;display:inline-flex;align-items:center;gap:4px}
.news-meta .read-more i{font-size:.7rem;transition:transform .3s}
.news-card:hover .read-more i{transform:translateX(4px)}
.empty-state{grid-column:1/-1;text-align:center;padding:70px 30px;background:var(--white);border-radius:var(--radius-lg);border:1px dashed var(--border-color);color:var(--text-muted);font-size:.95rem}

/* CTA */
.cta-wrapper{position:relative;background:linear-gradient(135deg,#08151C 0%,#0B1F2A 55%,#14323f 100%);padding:80px 0;overflow:hidden}
.cta-wrapper::before{content:'';position:absolute;top:0;left:0;right:0;bottom:0;background:url('/assets/images/backpic/back-2.png') center center / cover no-repeat;opacity:0.12}
.cta-inner{position:relative;z-index:2;text-align:center;max-width:720px;margin:0 auto}
.cta-inner .cta-icon{width:68px;height:68px;border-radius:50%;background:linear-gradient(135deg,var(--accent),var(--accent-light));display:flex;align-items:center;justify-content:center;margin:0 auto 26px;color:var(--primary);font-size:1.6rem;box-shadow:0 0 40px rgba(212,162,69,0.35)}
.cta-inner h2{color:var(--white);font-size:2.2rem;font-weight:800;letter-spacing:-0.02em;margin-bottom:14px}
.cta-inner p{color:rgba(255,255,255,0.72);font-size:1rem;max-width:520px;margin:0 auto 34px;line-height:1.8}
.cta-inner .btn-primary{height:52px;padding:0 40px;font-size:1rem;box-shadow:0 0 30px rgba(212,162,69,0.3)}
.cta-inner .btn-primary:hover{box-shadow:0 0 44px rgba(212,162,69,0.45)}
.cta-note{color:rgba(255,255,255,0.4);font-size:.78rem;margin-top:22px;letter-spacing:.04em}

/* Footer */
.site-footer{background:var(--bg-dark);color:rgba(255,255,255,0.7);padding:60px 0 30px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:48px;margin-bottom:40px}
.footer-brand .brand-logo{color:var(--white);font-size:1.3rem;margin-bottom:14px}
.footer-brand p{font-size:.87rem;color:rgba(255,255,255,0.5);line-height:1.8;max-width:340px}
.footer-col h4{color:var(--white);font-size:.95rem;font-weight:600;margin-bottom:18px;position:relative;padding-bottom:10px}
.footer-col h4::after{content:'';position:absolute;left:0;bottom:0;width:26px;height:2px;background:var(--accent);border-radius:2px}
.footer-col ul{list-style:none;padding:0;margin:0}
.footer-col ul li{margin-bottom:10px}
.footer-col ul li a{color:rgba(255,255,255,0.5);font-size:.87rem;transition:color .3s,padding-left .3s}
.footer-col ul li a:hover{color:var(--accent-light);padding-left:4px}
.footer-bottom{border-top:1px solid rgba(255,255,255,0.08);padding-top:24px;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px}
.footer-bottom .copyright{font-size:.8rem;color:rgba(255,255,255,0.35)}
.footer-bottom .copyright a{color:rgba(255,255,255,0.45)}
.footer-bottom .footer-links{display:flex;gap:20px;font-size:.8rem}
.footer-bottom .footer-links a{color:rgba(255,255,255,0.35)}
.footer-bottom .footer-links a:hover{color:var(--accent-light)}

/* Animations */
.fade-in-up{opacity:0;transform:translateY(30px);transition:opacity .7s ease,transform .7s ease}
.fade-in-up.visible{opacity:1;transform:translateY(0)}

/* Focus / accessibility */
a:focus-visible,.btn-primary:focus-visible,.btn-outline:focus-visible,button:focus-visible{outline:2px solid var(--accent);outline-offset:3px}

/* Responsive */
@media (max-width: 1200px) {
    .container{max-width:100%;padding-left:24px;padding-right:24px}
    .trust-grid{grid-template-columns:repeat(2,1fr);gap:20px}
}
@media (max-width: 992px) {
    :root{--section-gap:72px}
    .main-nav{display:none}
    .nav-toggle{display:block}
    .header-cta{display:none}
    .hero-wrapper{min-height:auto;padding-top:130px;padding-bottom:70px}
    .hero-wrapper h1{font-size:2.2rem}
    .steps-grid{grid-template-columns:1fr;gap:20px}
    .stories-wrapper{grid-template-columns:1fr;gap:40px}
    .news-grid{grid-template-columns:repeat(2,1fr);gap:20px}
    .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
    .mobile-bottom-nav{display:flex;justify-content:space-around}
    body{padding-bottom:62px}
    .section-head h2{font-size:1.7rem}
    .hero-stats{gap:20px}
}
@media (max-width: 768px) {
    :root{--section-gap:56px}
    .hero-wrapper h1{font-size:1.8rem}
    .hero-desc{font-size:1rem}
    .hero-actions .btn-primary,.hero-actions .btn-outline{flex:1;max-width:100%}
    .hero-stats{flex-wrap:wrap}
    .trust-grid{grid-template-columns:1fr 1fr}
    .news-grid{grid-template-columns:1fr}
    .footer-grid{grid-template-columns:1fr;gap:28px}
    .footer-bottom{flex-direction:column;text-align:center}
    .stories-intro h2{font-size:1.7rem}
    .cta-inner h2{font-size:1.7rem}
    .section-head{margin-bottom:36px}
    .brand-logo{font-size:1.15rem}
}
@media (max-width: 576px) {
    .container{padding-left:16px;padding-right:16px}
    .hero-wrapper{padding-top:120px}
    .hero-wrapper h1{font-size:1.6rem}
    .trust-grid{grid-template-columns:1fr;gap:14px}
    .trust-item{padding:12px;background:rgba(212,162,69,0.04);border-radius:12px}
    .hero-stats .stat-item{flex:1;min-width:100px}
    .step-card{padding:24px 18px}
    .testimonial-card{padding:20px 18px}
    .faq-header{padding:16px 18px}
    .faq-body{padding:0 18px}
    .faq-item.active .faq-body{padding-bottom:16px}
}

/* roulang page: category1 */
:root {
            --primary: #0B1F2A;
            --primary-dark: #08151C;
            --accent: #D4A245;
            --accent-light: #E5B85C;
            --success: #1FA88E;
            --bg-light: #F5F1E8;
            --bg-white: #FFFFFF;
            --bg-dark: #08151C;
            --text-body: #2A353C;
            --text-muted: #7A8B94;
            --border-light: rgba(11, 31, 42, 0.08);
            --border-mid: rgba(11, 31, 42, 0.14);
            --radius-lg: 22px;
            --radius-md: 16px;
            --radius-sm: 10px;
            --shadow-card: 0 8px 24px rgba(11, 31, 42, 0.08);
            --shadow-hover: 0 16px 36px rgba(11, 31, 42, 0.14);
            --transition-fast: all .3s ease;
            --transition-slow: all .6s ease;
            --font-display: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --font-body: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: var(--font-body);
            color: var(--text-body);
            background: var(--bg-white);
            line-height: 1.8;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition-fast);
        }
        img {
            max-width: 100%;
            display: block;
        }
        button,
        input {
            font-family: inherit;
        }
        ul {
            list-style: none;
        }
        .container {
            max-width: 1200px;
            padding-left: 24px;
            padding-right: 24px;
        }
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1030;
            background: rgba(255, 255, 255, .82);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid transparent;
            transition: var(--transition-fast);
        }
        .site-header.scrolled {
            background: rgba(255, 255, 255, .96);
            border-bottom-color: var(--border-light);
            box-shadow: 0 4px 20px rgba(11, 31, 42, .05);
        }
        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 76px;
            gap: 24px;
        }
        .brand-logo {
            font-family: var(--font-display);
            font-size: 24px;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.01em;
            line-height: 1.2;
            white-space: nowrap;
        }
        .brand-logo span {
            color: var(--accent);
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            margin: 0 auto;
        }
        .main-nav .nav-link {
            position: relative;
            padding: 8px 18px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-body);
            border-radius: 999px;
            transition: var(--transition-fast);
        }
        .main-nav .nav-link::after {
            content: '';
            position: absolute;
            left: 18px;
            right: 18px;
            bottom: 2px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
            transform: scaleX(0);
            transform-origin: left center;
            transition: transform .35s ease;
        }
        .main-nav .nav-link:hover {
            color: var(--primary);
        }
        .main-nav .nav-link:hover::after,
        .main-nav .nav-link.active::after {
            transform: scaleX(1);
        }
        .main-nav .nav-link.active {
            color: var(--primary);
            font-weight: 600;
        }
        .header-cta {
            flex-shrink: 0;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 44px;
            padding: 0 28px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 600;
            border: 1px solid transparent;
            cursor: pointer;
            transition: var(--transition-fast);
            line-height: 1;
            white-space: nowrap;
        }
        .btn-primary-custom {
            background: var(--accent);
            color: var(--primary);
            border-color: var(--accent);
        }
        .btn-primary-custom:hover {
            background: var(--accent-light);
            color: var(--primary);
            border-color: var(--accent-light);
            transform: translateY(-2px);
            box-shadow: 0 10px 26px rgba(212, 162, 69, .35);
        }
        .btn-outline-custom {
            background: transparent;
            color: #fff;
            border: 1px solid rgba(255, 255, 255, .55);
        }
        .btn-outline-custom:hover {
            border-color: var(--accent-light);
            color: var(--accent-light);
            transform: translateY(-2px);
        }
        .btn-lg-custom {
            height: 52px;
            padding: 0 40px;
            font-size: 16px;
        }
        .btn-sm-custom {
            height: 40px;
            padding: 0 22px;
            font-size: 14px;
        }
        .nav-toggle {
            display: none;
            width: 44px;
            height: 44px;
            border: none;
            background: transparent;
            color: var(--primary);
            font-size: 22px;
            border-radius: 12px;
            cursor: pointer;
            align-items: center;
            justify-content: center;
        }
        .mobile-nav-panel {
            display: none;
            position: fixed;
            top: 76px;
            left: 0;
            width: 100%;
            background: rgba(255, 255, 255, .98);
            border-bottom: 1px solid var(--border-light);
            box-shadow: 0 16px 36px rgba(11, 31, 42, .12);
            padding: 16px 24px 24px;
            z-index: 1029;
            backdrop-filter: blur(12px);
        }
        .mobile-nav-panel.open {
            display: block;
        }
        .mobile-nav-panel a {
            display: block;
            padding: 14px 12px;
            border-radius: 12px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-body);
        }
        .mobile-nav-panel a:hover,
        .mobile-nav-panel a.active {
            background: var(--bg-light);
            color: var(--primary);
        }
        .mobile-bottom-nav {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            width: 100%;
            z-index: 1030;
            background: rgba(255, 255, 255, .96);
            backdrop-filter: blur(12px);
            border-top: 1px solid var(--border-light);
            padding: 8px 16px calc(8px + env(safe-area-inset-bottom));
            box-shadow: 0 -6px 24px rgba(11, 31, 42, .06);
        }
        .mobile-bottom-nav .mb-grid {
            display: flex;
            justify-content: space-around;
            align-items: center;
            max-width: 480px;
            margin: 0 auto;
        }
        .mobile-bottom-nav .mb-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 2px;
            padding: 6px 14px;
            border-radius: 999px;
            font-size: 11px;
            font-weight: 600;
            color: var(--text-muted);
            transition: var(--transition-fast);
        }
        .mobile-bottom-nav .mb-item i {
            font-size: 18px;
        }
        .mobile-bottom-nav .mb-item.active {
            background: var(--accent);
            color: var(--primary);
        }
        .page-banner {
            position: relative;
            padding: 180px 0 100px;
            background: linear-gradient(120deg, rgba(11, 31, 42, .88) 0%, rgba(8, 21, 28, .75) 100%), url(/assets/images/backpic/back-1.png) center center / cover no-repeat;
            color: #fff;
            overflow: hidden;
        }
        .page-banner::after {
            content: '';
            position: absolute;
            right: -10%;
            bottom: -40%;
            width: 480px;
            height: 480px;
            background: radial-gradient(circle, rgba(212, 162, 69, .18) 0%, transparent 70%);
            pointer-events: none;
        }
        .page-banner .breadcrumb-nav {
            margin-bottom: 20px;
            font-size: 13px;
            color: rgba(255, 255, 255, .65);
            letter-spacing: .04em;
        }
        .page-banner .breadcrumb-nav a {
            color: rgba(255, 255, 255, .75);
        }
        .page-banner .breadcrumb-nav a:hover {
            color: var(--accent-light);
        }
        .page-banner h1 {
            font-family: var(--font-display);
            font-size: 42px;
            font-weight: 800;
            letter-spacing: -0.01em;
            line-height: 1.3;
            margin-bottom: 20px;
            color: #fff;
            max-width: 720px;
        }
        .page-banner .banner-subtitle {
            font-size: 17px;
            line-height: 1.85;
            color: rgba(255, 255, 255, .82);
            max-width: 620px;
        }
        .page-banner .banner-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 28px;
        }
        .page-banner .banner-badges span {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, .1);
            border: 1px solid rgba(255, 255, 255, .18);
            border-radius: 999px;
            padding: 8px 18px;
            font-size: 13px;
            font-weight: 500;
            color: rgba(255, 255, 255, .9);
        }
        .page-banner .banner-badges i {
            color: var(--accent-light);
        }
        .section {
            padding: 96px 0;
        }
        .section-alt {
            background: var(--bg-light);
        }
        .section-dark {
            background: var(--bg-dark);
            color: #fff;
        }
        .section-head {
            margin-bottom: 56px;
            max-width: 760px;
        }
        .section-head .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            color: var(--accent);
            text-transform: uppercase;
            letter-spacing: .08em;
            margin-bottom: 12px;
        }
        .section-head .eyebrow::before {
            content: '';
            width: 24px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }
        .section-head h2 {
            font-family: var(--font-display);
            font-size: 34px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.35;
            margin-bottom: 14px;
            letter-spacing: -0.01em;
        }
        .section-head p {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.8;
        }
        .section-dark .section-head h2 {
            color: #fff;
        }
        .section-dark .section-head p {
            color: rgba(255, 255, 255, .65);
        }
        .guide-intro {
            padding: 96px 0;
        }
        .split-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 72px;
            align-items: center;
        }
        .split-media {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }
        .split-media img {
            width: 100%;
            height: 100%;
            min-height: 360px;
            object-fit: cover;
            transition: transform .6s linear;
        }
        .split-media:hover img {
            transform: scale(1.03);
        }
        .split-content h2 {
            font-family: var(--font-display);
            font-size: 30px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.35;
            margin-bottom: 18px;
            letter-spacing: -0.01em;
        }
        .split-content p {
            font-size: 16px;
            color: var(--text-body);
            line-height: 1.85;
            margin-bottom: 20px;
        }
        .split-list {
            margin-top: 16px;
        }
        .split-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 9px 0;
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.6;
        }
        .split-list li i {
            color: var(--success);
            font-size: 16px;
            margin-top: 4px;
            flex-shrink: 0;
        }
        .feature-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
        }
        .feature-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 36px 32px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-card);
            transition: var(--transition-fast);
        }
        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(212, 162, 69, .3);
        }
        .feature-icon {
            width: 52px;
            height: 52px;
            border-radius: 16px;
            background: linear-gradient(135deg, rgba(212, 162, 69, .18), rgba(212, 162, 69, .06));
            color: var(--accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin-bottom: 18px;
        }
        .feature-card h3 {
            font-family: var(--font-display);
            font-size: 18px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 10px;
        }
        .feature-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.75;
            margin: 0;
        }
        .steps-section {
            padding: 96px 0;
            background: var(--bg-light);
        }
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 48px;
        }
        .step-card {
            position: relative;
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 36px 28px 32px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-card);
            transition: var(--transition-fast);
            overflow: hidden;
        }
        .step-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .step-num {
            font-family: var(--font-display);
            font-size: 42px;
            font-weight: 800;
            color: rgba(212, 162, 69, .28);
            line-height: 1;
            margin-bottom: 16px;
            letter-spacing: -0.02em;
        }
        .step-card h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 10px;
        }
        .step-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin: 0;
        }
        .scenarios-section {
            padding: 96px 0;
        }
        .scenarios-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 56px;
            align-items: center;
        }
        .scenarios-media {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }
        .scenarios-media img {
            width: 100%;
            height: 100%;
            min-height: 360px;
            object-fit: cover;
            transition: transform .6s linear;
        }
        .scenarios-media:hover img {
            transform: scale(1.03);
        }
        .scenarios-content h2 {
            font-family: var(--font-display);
            font-size: 30px;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 20px;
            line-height: 1.35;
            letter-spacing: -0.01em;
        }
        .scenario-item {
            display: flex;
            align-items: flex-start;
            gap: 18px;
            padding: 20px 0;
            border-bottom: 1px solid var(--border-light);
        }
        .scenario-item:last-child {
            border-bottom: none;
        }
        .scenario-icon {
            width: 46px;
            height: 46px;
            flex-shrink: 0;
            border-radius: 14px;
            background: var(--bg-light);
            color: var(--accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
        }
        .scenario-item h3 {
            font-size: 16px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 6px;
        }
        .scenario-item p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin: 0;
        }
        .faq-section {
            padding: 96px 0;
            background: linear-gradient(135deg, var(--bg-light) 0%, #f0ebe0 100%);
        }
        .faq-list {
            max-width: 860px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            margin-bottom: 16px;
            border: 1px solid var(--border-light);
            box-shadow: 0 4px 16px rgba(11, 31, 42, .04);
            overflow: hidden;
            transition: var(--transition-fast);
        }
        .faq-item:hover {
            border-color: rgba(212, 162, 69, .28);
            box-shadow: var(--shadow-card);
        }
        .faq-item .faq-header {
            width: 100%;
            background: transparent;
            border: none;
            padding: 24px 28px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            font-size: 16px;
            font-weight: 600;
            color: var(--primary);
            cursor: pointer;
            text-align: left;
            transition: var(--transition-fast);
        }
        .faq-item .faq-header:hover {
            color: var(--accent);
        }
        .faq-item .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            border: 1px solid var(--border-mid);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            transition: transform .35s ease, background .3s ease, color .3s ease;
            color: var(--accent);
        }
        .faq-item .faq-header[aria-expanded="true"] .faq-icon {
            transform: rotate(45deg);
            background: var(--accent);
            border-color: var(--accent);
            color: #fff;
        }
        .faq-item .faq-body {
            padding: 0 28px 24px;
        }
        .faq-item .faq-body p {
            margin: 0;
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.75;
        }
        .cta-section {
            padding: 96px 0;
            background: linear-gradient(120deg, var(--primary-dark) 0%, #0d2632 55%, #102e3c 100%);
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            left: -15%;
            bottom: -50%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(212, 162, 69, .18) 0%, transparent 70%);
            pointer-events: none;
        }
        .cta-section::after {
            content: '';
            position: absolute;
            right: -10%;
            top: -40%;
            width: 320px;
            height: 320px;
            background: radial-gradient(circle, rgba(31, 168, 142, .12) 0%, transparent 70%);
            pointer-events: none;
        }
        .cta-inner {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 720px;
            margin: 0 auto;
        }
        .cta-inner h2 {
            font-family: var(--font-display);
            font-size: 38px;
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 18px;
            letter-spacing: -0.01em;
        }
        .cta-inner h2 span {
            color: var(--accent-light);
        }
        .cta-inner p {
            font-size: 16px;
            color: rgba(255, 255, 255, .72);
            line-height: 1.85;
            margin-bottom: 36px;
        }
        .cta-inner .btn-group-custom {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .jump-section {
            padding: 96px 0;
        }
        .jump-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .jump-card {
            position: relative;
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 36px 32px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-card);
            transition: var(--transition-fast);
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .jump-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(212, 162, 69, .3);
        }
        .jump-card .jump-icon {
            width: 48px;
            height: 48px;
            border-radius: 14px;
            background: linear-gradient(135deg, rgba(212, 162, 69, .16), rgba(212, 162, 69, .05));
            color: var(--accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
        }
        .jump-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--primary);
            margin: 0;
        }
        .jump-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin: 0;
            flex-grow: 1;
        }
        .jump-card .jump-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--accent);
            margin-top: 8px;
        }
        .jump-card .jump-link i {
            transition: transform .3s ease;
        }
        .jump-card:hover .jump-link i {
            transform: translateX(4px);
        }
        .site-footer {
            background: var(--primary-dark);
            padding: 72px 0 0;
            color: rgba(255, 255, 255, .72);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 56px;
            padding-bottom: 56px;
        }
        .footer-brand .brand-logo {
            color: #fff;
            font-size: 22px;
            margin-bottom: 16px;
            display: inline-block;
        }
        .footer-brand span {
            color: var(--accent-light);
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, .55);
            max-width: 360px;
            margin-top: 14px;
            margin-bottom: 0;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 20px;
            letter-spacing: .02em;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            font-size: 14px;
            color: rgba(255, 255, 255, .6);
            transition: var(--transition-fast);
        }
        .footer-col ul li a:hover {
            color: var(--accent-light);
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .08);
            padding: 24px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            flex-wrap: wrap;
        }
        .footer-bottom .copyright {
            font-size: 13px;
            color: rgba(255, 255, 255, .4);
        }
        .footer-bottom .copyright a {
            color: rgba(255, 255, 255, .5);
        }
        .footer-bottom .copyright a:hover {
            color: var(--accent-light);
        }
        .footer-bottom .footer-links {
            font-size: 13px;
            color: rgba(255, 255, 255, .35);
        }
        .reveal {
            opacity: 0;
            transform: translateY(30px);
            transition: opacity .7s ease, transform .7s ease;
        }
        .reveal.visible {
            opacity: 1;
            transform: translateY(0);
        }
        @media (max-width: 1200px) {
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 992px) {
            .main-nav {
                display: none;
            }
            .header-cta {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
            .mobile-bottom-nav {
                display: block;
            }
            .split-block {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .split-media img,
            .scenarios-media img {
                min-height: 300px;
            }
            .scenarios-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .jump-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 40px;
            }
            body {
                padding-bottom: 64px;
            }
            .section {
                padding: 72px 0;
            }
            .guide-intro,
            .steps-section,
            .scenarios-section,
            .faq-section,
            .cta-section,
            .jump-section {
                padding: 72px 0;
            }
        }
        @media (max-width: 768px) {
            .page-banner {
                padding: 140px 0 70px;
            }
            .page-banner h1 {
                font-size: 30px;
            }
            .page-banner .banner-subtitle {
                font-size: 15px;
            }
            .section-head h2 {
                font-size: 26px;
            }
            .split-content h2,
            .scenarios-content h2 {
                font-size: 24px;
            }
            .feature-grid {
                grid-template-columns: 1fr;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .jump-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .cta-inner h2 {
                font-size: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        @media (max-width: 576px) {
            .container {
                padding-left: 20px;
                padding-right: 20px;
            }
            .brand-logo {
                font-size: 20px;
            }
            .nav-container {
                height: 64px;
            }
            .mobile-nav-panel {
                top: 64px;
            }
            .page-banner {
                padding: 120px 0 60px;
            }
            .page-banner h1 {
                font-size: 26px;
                line-height: 1.35;
            }
            .page-banner .banner-badges {
                gap: 8px;
            }
            .split-media img,
            .scenarios-media img {
                min-height: 240px;
            }
            .feature-card {
                padding: 28px 24px;
            }
            .step-card {
                padding: 28px 24px;
            }
            .faq-item .faq-header {
                padding: 20px 20px;
                font-size: 15px;
            }
            .faq-item .faq-body {
                padding: 0 20px 20px;
            }
            .btn {
                height: 40px;
                padding: 0 22px;
                font-size: 14px;
            }
        }

/* roulang page: article */
:root {
  --primary: #0B1F2A;
  --primary-deep: #08151C;
  --secondary: #16324A;
  --accent: #D4A245;
  --accent-light: #E5B85C;
  --green: #1FA88E;
  --bg-soft: #F5F1E8;
  --bg-white: #FFFFFF;
  --bg-deep: #08151C;
  --text-main: #1C2B36;
  --text-light: #5C6F7A;
  --text-muted: #8A9BA5;
  --border: #E4DED3;
  --border-light: #F0EAE0;
  --radius-lg: 22px;
  --radius-md: 16px;
  --radius-sm: 10px;
  --shadow-sm: 0 4px 16px rgba(11,31,42,0.06);
  --shadow: 0 8px 24px rgba(11,31,42,0.08);
  --shadow-lg: 0 16px 40px rgba(11,31,42,0.14);
  --font-display: 'PingFang SC','Microsoft YaHei','Noto Sans SC',sans-serif;
  --font-body: 'PingFang SC','Microsoft YaHei','Noto Sans SC',sans-serif;
  --transition: all 0.3s ease;
}
* { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior:smooth; }
body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-main);
  background: var(--bg-soft);
  -webkit-font-smoothing: antialiased;
  padding-bottom: 0;
}
a { text-decoration:none; color:inherit; transition: var(--transition); }
img { max-width:100%; height:auto; }
button, input, select, textarea { font-family: inherit; }
.container { max-width:1200px; padding-left:24px; padding-right:24px; }
@media (min-width:1200px){
  .container { max-width:1200px; }
}
.fade-up {
  opacity:0;
  transform: translateY(24px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}
.fade-up.visible { opacity:1; transform: translateY(0); }

/* ===== Header / Nav ===== */
.site-header {
  position: fixed;
  top:0; left:0; right:0;
  z-index: 1050;
  background: rgba(255,255,255,0.94);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(228,222,211,0.6);
  padding: 14px 0;
  transition: all 0.35s ease;
  position: relative;
}
.site-header.scrolled {
  padding: 8px 0;
  background: rgba(255,255,255,0.98);
  box-shadow: 0 4px 20px rgba(11,31,42,0.06);
  border-bottom-color: var(--border);
}
.main-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}
.brand-logo {
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: -0.02em;
  line-height: 1.2;
  flex-shrink: 0;
}
.brand-logo span { color: var(--accent); }
.nav-links {
  display: flex;
  align-items: center;
  gap: 30px;
  margin:0; padding:0;
  list-style:none;
}
.nav-links .nav-link {
  position: relative;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-light);
  padding: 6px 2px;
  background:none;
  border:none;
  cursor:pointer;
}
.nav-links .nav-link::after {
  content:'';
  position:absolute;
  left:0; bottom:-2px;
  width:0; height:3px;
  border-radius:3px;
  background: var(--accent);
  transition: width 0.3s ease;
}
.nav-links .nav-link:hover,
.nav-links .nav-link.active { color: var(--primary); font-weight:600; }
.nav-links .nav-link:hover::after,
.nav-links .nav-link.active::after { width:100%; }
.btn-cta {
  display:inline-flex;
  align-items:center;
  justify-content:center;
  height:44px;
  padding:0 30px;
  border-radius:999px;
  background:linear-gradient(135deg, var(--accent-light), var(--accent));
  color:var(--primary);
  font-size:15px;
  font-weight:600;
  border:none;
  box-shadow:0 4px 14px rgba(212,162,69,0.28);
  transition: all 0.3s ease;
  white-space: nowrap;
}
.btn-cta:hover {
  background:linear-gradient(135deg, #F0C872, #DEB055);
  color:var(--primary);
  transform: translateY(-2px);
  box-shadow:0 8px 20px rgba(212,162,69,0.4);
}
.btn-cta:active {
  transform: translateY(0);
  box-shadow:0 2px 8px rgba(212,162,69,0.3);
}
.mobile-toggle {
  display:none;
  width:42px; height:42px;
  border:1px solid var(--border);
  background: var(--bg-white);
  border-radius:12px;
  color:var(--primary);
  font-size:18px;
  cursor:pointer;
  align-items:center;
  justify-content:center;
}
.mobile-dropdown {
  display:none;
  position:absolute;
  top:100%; left:0; right:0;
  background:var(--bg-white);
  border-bottom:1px solid var(--border);
  padding:16px 24px;
  box-shadow:0 10px 30px rgba(11,31,42,0.1);
  flex-direction:column;
  gap:6px;
  z-index:1050;
}
.mobile-dropdown.open { display:flex; }
.mobile-dropdown-link {
  padding:12px 16px;
  border-radius:10px;
  font-size:15px;
  font-weight:500;
  color:var(--text-main);
  background:transparent;
  transition: all 0.25s;
}
.mobile-dropdown-link:hover { background:var(--bg-soft); color:var(--primary); }
.mobile-dropdown-cta { margin-top:8px; justify-content:center; }

/* ===== Button 通用覆盖 ===== */
.btn {
  border-radius:999px;
  font-weight:500;
  transition: all 0.3s ease;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  height:44px;
  padding:0 28px;
  font-size:15px;
  border:none;
  cursor:pointer;
  line-height:1.2;
}
.btn-primary {
  background:var(--accent);
  color:var(--primary);
}
.btn-primary:hover {
  background:var(--accent-light);
  color:var(--primary);
  transform: translateY(-2px);
  box-shadow:0 8px 20px rgba(212,162,69,0.35);
}
.btn-outline {
  border:1px solid var(--border);
  color:var(--primary);
  background:transparent;
}
.btn-outline:hover {
  border-color:var(--accent);
  color:var(--accent);
  transform: translateY(-2px);
}
.btn-sm {
  height:36px;
  padding:0 18px;
  font-size:13px;
}
.btn-lg {
  height:52px;
  padding:0 36px;
  font-size:16px;
}
.btn-outline-light {
  height:52px;
  padding:0 36px;
  border-radius:999px;
  border:1px solid rgba(255,255,255,0.5);
  color:#fff;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-size:15px;
  font-weight:500;
  transition: all 0.3s;
  background:transparent;
}
.btn-outline-light:hover {
  background:rgba(255,255,255,0.1);
  border-color:#fff;
  color:#fff;
  transform: translateY(-2px);
}

/* ===== 面包屑 ===== */
.breadcrumb-area {
  padding: 110px 0 0;
  background: var(--bg-soft);
}
.breadcrumb-nav {
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:13px;
  color: var(--text-muted);
  padding: 20px 0 12px;
}
.breadcrumb-nav a { color: var(--text-light); }
.breadcrumb-nav a:hover { color: var(--accent); }
.breadcrumb-nav i { font-size:10px; color:var(--text-muted); opacity:0.6; }
.breadcrumb-nav span { color: var(--primary); font-weight:500; }
.platform-status {
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:13px;
  color:var(--text-light);
  background:rgba(31,168,142,0.08);
  border:1px solid rgba(31,168,142,0.22);
  padding:6px 16px;
  border-radius:999px;
  margin-bottom:20px;
}
.platform-status i { color:var(--green); font-size:9px; animation:pulse 2s infinite; }
@keyframes pulse { 0%,100% { opacity:1; } 50% { opacity:0.3; } }

/* ===== 文章主体 ===== */
.article-section {
  padding: 10px 0 70px;
  background: var(--bg-soft);
}
.article-layout {
  display:grid;
  grid-template-columns: minmax(0,1fr) 320px;
  gap:40px;
  align-items:start;
}
.article-card {
  background:var(--bg-white);
  border-radius:var(--radius-lg);
  border:1px solid var(--border-light);
  box-shadow:var(--shadow);
  padding:48px;
}
.article-title {
  font-size:32px;
  font-weight:800;
  line-height:1.35;
  color:var(--primary);
  margin:0 0 20px;
  letter-spacing:-0.01em;
}
.article-meta {
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:16px;
  padding-bottom:28px;
  margin-bottom:32px;
  border-bottom:1px solid var(--border-light);
  font-size:13px;
  color:var(--text-muted);
}
.category-badge {
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 12px;
  border-radius:999px;
  background:rgba(212,162,69,0.14);
  color:#A67B2A;
  font-size:12px;
  font-weight:600;
  letter-spacing:0.05em;
  white-space:nowrap;
}
.meta-date, .meta-read {
  display:inline-flex;
  align-items:center;
  gap:6px;
}
.article-body {
  font-size:16px;
  line-height:1.9;
  color:var(--text-main);
}
.article-body p { margin-bottom:24px; }
.article-body h2 {
  font-size:24px;
  font-weight:700;
  color:var(--primary);
  margin:44px 0 18px;
  padding-bottom:12px;
  border-bottom:2px solid var(--border-light);
}
.article-body h3 {
  font-size:19px;
  font-weight:600;
  color:var(--primary);
  margin:32px 0 14px;
}
.article-body ul,
.article-body ol {
  padding-left:1.4em;
  margin-bottom:24px;
}
.article-body li { margin-bottom:8px; }
.article-body a {
  color:var(--accent);
  font-weight:500;
  border-bottom:1px solid transparent;
}
.article-body a:hover { border-bottom-color:var(--accent); }
.article-body img {
  border-radius:var(--radius-md);
  margin:24px 0;
  box-shadow:var(--shadow-sm);
}
.article-body blockquote {
  border-left:4px solid var(--accent);
  background:var(--bg-soft);
  padding:18px 24px;
  border-radius:0 var(--radius-md) var(--radius-md) 0;
  margin:28px 0;
  color:var(--text-light);
}
.article-body pre {
  background:var(--primary);
  color:#E8F0F4;
  border-radius:var(--radius-md);
  padding:20px 24px;
  overflow-x:auto;
  font-size:14px;
  line-height:1.7;
  margin:24px 0;
}
.article-body code {
  background:rgba(11,31,42,0.06);
  color:#C0392B;
  border-radius:6px;
  padding:2px 8px;
  font-size:14px;
}
.article-body pre code {
  background:transparent;
  color:inherit;
  padding:0;
}
.article-body .alert-box,
.article-body .warning-box,
.article-body .info-box {
  border-radius:var(--radius-md);
  padding:18px 22px;
  margin:24px 0;
  border-left:4px solid;
  font-size:15px;
  line-height:1.7;
}
.article-body .alert-box { background:rgba(212,162,69,0.08); border-left-color:var(--accent); }
.article-body .warning-box { background:rgba(192,57,43,0.06); border-left-color:#C0392B; }
.article-body .info-box { background:rgba(31,168,142,0.08); border-left-color:var(--green); }
.not-found-card {
  text-align:center;
  padding:80px 48px;
}
.not-found-icon {
  width:84px; height:84px;
  border-radius:50%;
  background:var(--bg-soft);
  display:flex;
  align-items:center;
  justify-content:center;
  margin:0 auto 24px;
  font-size:32px;
  color:var(--accent);
}
.not-found-card .article-title { margin-bottom:12px; }
.not-found-card p { color:var(--text-light); margin-bottom:28px; }

/* ===== 侧栏 ===== */
.article-sidebar {
  position:sticky;
  top:96px;
  display:flex;
  flex-direction:column;
  gap:20px;
}
.toc-card {
  background:var(--bg-white);
  border-radius:var(--radius-md);
  border:1px solid var(--border-light);
  box-shadow:var(--shadow-sm);
  padding:22px;
}
.toc-title {
  font-size:15px;
  font-weight:600;
  color:var(--primary);
  margin-bottom:16px;
  display:flex;
  align-items:center;
  gap:8px;
}
.toc-list {
  list-style:none;
  margin:0;
  padding:0;
  max-height:60vh;
  overflow-y:auto;
}
.toc-list li { margin-bottom:4px; }
.toc-list a {
  display:block;
  padding:7px 12px;
  border-radius:8px;
  font-size:14px;
  color:var(--text-light);
  border-left:2px solid var(--border);
  transition: all 0.25s;
}
.toc-list a:hover,
.toc-list a.active {
  color:var(--primary);
  background:var(--bg-soft);
  border-left-color:var(--accent);
  font-weight:500;
}
.toc-list a.toc-sub {
  padding-left:28px;
  font-size:13px;
}
.sidebar-card {
  background:var(--bg-white);
  border:1px solid var(--border-light);
  border-radius:var(--radius-md);
  box-shadow:var(--shadow-sm);
  padding:24px;
  text-align:center;
}
.sidebar-card-icon {
  width:52px; height:52px;
  border-radius:14px;
  background:rgba(212,162,69,0.12);
  color:var(--accent);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:22px;
  margin:0 auto 14px;
}
.sidebar-card h3 {
  font-size:16px;
  font-weight:600;
  color:var(--primary);
  margin-bottom:8px;
}
.sidebar-card p {
  font-size:13px;
  color:var(--text-light);
  margin-bottom:16px;
  line-height:1.6;
}
.sidebar-card-accent {
  background:linear-gradient(135deg, var(--primary), var(--secondary));
  border:none;
  color:#fff;
}
.sidebar-card-accent h3 { color:#fff; }
.sidebar-card-accent p { color:rgba(255,255,255,0.7); }

/* ===== 相关推荐 ===== */
.related-section {
  padding:70px 0;
  background:var(--bg-white);
}
.related-head {
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:20px;
  margin-bottom:36px;
}
.section-overline {
  font-size:12px;
  font-weight:600;
  letter-spacing:0.12em;
  color:var(--accent);
  text-transform:uppercase;
}
.related-head h2 {
  font-size:30px;
  font-weight:700;
  color:var(--primary);
  margin:6px 0 0;
}
.related-grid {
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:28px;
}
.related-card {
  display:block;
  background:var(--bg-white);
  border:1px solid var(--border-light);
  border-radius:var(--radius-md);
  overflow:hidden;
  box-shadow:var(--shadow-sm);
  transition: all 0.35s ease;
}
.related-card:hover {
  transform: translateY(-4px);
  box-shadow:var(--shadow-lg);
  border-color:transparent;
}
.related-img { height:200px; overflow:hidden; }
.related-img img {
  width:100%; height:100%;
  object-fit:cover;
  transition: transform 0.6s ease;
}
.related-card:hover .related-img img { transform:scale(1.03); }
.related-content { padding:24px; }
.related-content .category-badge { margin-bottom:12px; }
.related-content h3 {
  font-size:18px;
  font-weight:600;
  color:var(--primary);
  margin-bottom:10px;
  line-height:1.45;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.related-content p {
  font-size:14px;
  color:var(--text-light);
  line-height:1.7;
  margin-bottom:16px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.related-meta {
  display:flex;
  align-items:center;
  gap:16px;
  font-size:12px;
  color:var(--text-muted);
}

/* ===== CTA ===== */
.cta-section {
  position:relative;
  padding:80px 0;
  background:
    linear-gradient(120deg, rgba(8,21,28,0.95), rgba(11,31,42,0.88)),
    url('/assets/images/backpic/back-1.png') center/cover;
  color:#fff;
  overflow:hidden;
}
.cta-inner {
  text-align:center;
  max-width:700px;
  margin:0 auto;
}
.cta-inner h2 {
  font-size:36px;
  font-weight:800;
  color:#fff;
  margin-bottom:16px;
}
.cta-inner p {
  font-size:16px;
  color:rgba(255,255,255,0.75);
  margin-bottom:32px;
}
.cta-actions {
  display:flex;
  flex-wrap:wrap;
  gap:16px;
  justify-content:center;
}

/* ===== Footer ===== */
.site-footer {
  background:var(--bg-deep);
  color:rgba(255,255,255,0.65);
  padding:64px 0 0;
  font-size:14px;
}
.footer-grid {
  display:grid;
  grid-template-columns:2fr 1fr 1fr;
  gap:40px;
  padding-bottom:48px;
  border-bottom:1px solid rgba(255,255,255,0.08);
}
.footer-brand .brand-logo {
  font-size:24px;
  margin-bottom:16px;
  display:inline-block;
  color:#fff;
}
.footer-brand p {
  font-size:14px;
  line-height:1.8;
  color:rgba(255,255,255,0.55);
  max-width:360px;
  margin:0;
}
.footer-col h4 {
  font-size:15px;
  color:#fff;
  margin-bottom:20px;
  font-weight:600;
}
.footer-col ul {
  list-style:none;
  padding:0;
  margin:0;
  display:flex;
  flex-direction:column;
  gap:12px;
}
.footer-col a { color:rgba(255,255,255,0.6); font-size:14px; transition:color 0.3s; }
.footer-col a:hover { color:var(--accent-light); }
.footer-bottom {
  display:flex;
  align-items:center;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:12px;
  padding:24px 0;
}
.copyright { color:#7A8B94; font-size:12px; }
.copyright a { color:#7A8B94; }
.copyright a:hover { color:var(--accent-light); }
.footer-links { color:#7A8B94; font-size:12px; }

/* ===== 移动端底部导航 ===== */
.mobile-bottom-nav {
  display:none;
  position:fixed;
  bottom:0; left:0; right:0;
  z-index:1040;
  background:rgba(255,255,255,0.97);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-top:1px solid var(--border-light);
  padding:6px 12px calc(6px + env(safe-area-inset-bottom));
  box-shadow:0 -4px 20px rgba(11,31,42,0.08);
}
.mobile-bottom-nav .mb-item {
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:3px;
  font-size:11px;
  color:var(--text-muted);
  padding:6px 4px;
  border-radius:12px;
  flex:1;
  text-decoration:none;
  transition: all 0.3s;
}
.mobile-bottom-nav .mb-item i { font-size:18px; }
.mobile-bottom-nav .mb-item.active {
  color:var(--accent);
  font-weight:600;
  background:rgba(212,162,69,0.1);
}

/* ===== 响应式 ===== */
@media (max-width: 992px) {
  .article-layout { grid-template-columns:1fr; }
  .article-sidebar {
    position:static;
    order:2;
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:20px;
  }
  .toc-card { grid-column:1 / -1; }
  .related-grid { grid-template-columns:repeat(2,1fr); }
  .footer-grid { grid-template-columns:1fr 1fr; }
}
@media (max-width: 768px) {
  .site-header { padding:10px 0; }
  .nav-links, .header-cta { display:none; }
  .mobile-toggle { display:inline-flex; }
  .mobile-bottom-nav { display:flex; }
  body { padding-bottom:64px; }
  .breadcrumb-area { padding-top:90px; }
  .article-card { padding:32px 24px; }
  .article-title { font-size:27px; }
  .article-meta { gap:12px; }
  .article-body { font-size:15px; line-height:1.85; }
  .article-body h2 { font-size:21px; }
  .article-body h3 { font-size:18px; }
  .related-section { padding:50px 0; }
  .related-head { flex-direction:column; align-items:flex-start; }
  .cta-section { padding:60px 0; }
  .cta-inner h2 { font-size:30px; }
  .footer-grid { grid-template-columns:1fr; gap:32px; }
  .footer-bottom { flex-direction:column; text-align:center; }
}
@media (max-width: 576px) {
  .container { padding-left:18px; padding-right:18px; }
  .related-grid { grid-template-columns:1fr; }
  .article-sidebar { grid-template-columns:1fr; }
  .article-card { padding:26px 18px; border-radius:18px; }
  .article-title { font-size:23px; }
  .cta-actions { flex-direction:column; width:100%; }
  .cta-actions .btn { width:100%; }
  .breadcrumb-nav { font-size:12px; }
  .related-head h2 { font-size:26px; }
  .not-found-card { padding:60px 24px; }
}