/* roulang page: index */
:root{
            --bg-deep:#040A12;
            --bg-dark:#06101F;
            --bg-mid:#0A1D33;
            --primary:#2EA8FF;
            --primary-deep:#0F5F9E;
            --primary-glow:rgba(46,168,255,0.45);
            --accent:#4DE3C0;
            --amber:#F5B34D;
            --text-main:rgba(255,255,255,0.92);
            --text-sub:rgba(255,255,255,0.68);
            --text-weak:rgba(255,255,255,0.46);
            --glass-bg:rgba(255,255,255,0.06);
            --glass-bg-hover:rgba(255,255,255,0.10);
            --glass-brd:rgba(255,255,255,0.16);
            --shadow-card:0 20px 60px rgba(0,0,0,0.35);
            --shadow-card-lg:0 28px 80px rgba(0,0,0,0.45);
            --radius:18px;
            --radius-lg:24px;
            --radius-sm:12px;
            --gutter:96px;
            --font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Hiragino Sans GB",sans-serif;
            --mono:"DIN Alternate","Bebas Neue",ui-monospace,Consolas,monospace;
        }
        *,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
        html{scroll-behavior:smooth;scroll-padding-top:96px}
        body{
            font-family:var(--font-family);
            font-size:16px;
            line-height:1.8;
            color:var(--text-main);
            background:
                radial-gradient(circle at 78% -10%,rgba(46,168,255,0.12),transparent 32%),
                radial-gradient(circle at 20% 30%,rgba(4,222,192,0.06),transparent 28%),
                linear-gradient(180deg,#06101F 0%,#040A12 46%,#06101F 100%);
            background-repeat:no-repeat;
            min-height:100vh;
            overflow-x:hidden;
        }
        body::before{
            content:"";
            position:fixed;
            inset:0;
            background-image:
                linear-gradient(rgba(255,255,255,0.022) 1px,transparent 1px),
                linear-gradient(90deg,rgba(255,255,255,0.022) 1px,transparent 1px);
            background-size:52px 52px;
            pointer-events:none;
            z-index:0;
        }
        a{color:inherit;text-decoration:none}
        img{max-width:100%;display:block}
        button{font-family:inherit}
        .container{max-width:1280px;padding-left:16px;padding-right:16px}
        .position-relative{z-index:1}

        .sa-navbar{
            min-height:76px;
            background:rgba(6,16,31,0.86);
            backdrop-filter:blur(18px);
            -webkit-backdrop-filter:blur(18px);
            border-bottom:1px solid rgba(255,255,255,0.08);
            padding-top:0;
            padding-bottom:0;
            z-index:1040;
        }
        .sa-navbar .container{align-items:stretch}
        .sa-brand{
            display:inline-flex;
            align-items:center;
            gap:12px;
            padding:12px 0;
            margin-right:28px;
        }
        .sa-logo-mark{
            width:42px;height:42px;
            display:inline-flex;align-items:center;justify-content:center;
            border-radius:13px;
            background:linear-gradient(135deg,rgba(46,168,255,0.24),rgba(46,168,255,0.08));
            border:1px solid rgba(46,168,255,0.4);
            box-shadow:0 0 24px rgba(46,168,255,0.18);
            flex:0 0 auto;
        }
        .sa-logo-mark svg{width:26px;height:26px}
        .sa-logo-text{line-height:1.2}
        .sa-logo-text strong{display:block;font-size:21px;font-weight:700;letter-spacing:.4px;color:#fff}
        .sa-logo-text small{display:block;font-size:10px;letter-spacing:3.4px;color:rgba(255,255,255,0.42);margin-top:2px;text-transform:uppercase}
        .sa-navbar .navbar-nav{gap:4px;align-items:center;flex-direction:row}
        .sa-navbar .nav-link{
            padding:.5rem 1.02rem;
            border-radius:50rem;
            color:rgba(255,255,255,0.74);
            font-weight:500;
            font-size:15px;
            border:1px solid transparent;
            transition:all .22s ease;
            background:transparent;
            white-space:nowrap;
        }
        .sa-navbar .nav-link:hover{
            color:#fff;
            background:rgba(255,255,255,0.07);
        }
        .sa-navbar .nav-link.active{
            color:var(--primary);
            background:rgba(46,168,255,0.16);
            border-color:rgba(46,168,255,0.34);
            box-shadow:0 0 16px rgba(46,168,255,0.13);
        }
        .sa-navbar .nav-divider{
            width:5px;height:5px;border-radius:50%;
            background:var(--primary);opacity:.5;
            margin:0 6px;display:inline-block;
        }
        .btn-sa-primary{
            display:inline-flex;align-items:center;justify-content:center;gap:8px;
            min-height:48px;
            padding:.65rem 1.35rem;
            border-radius:14px;
            border:0;
            font-size:15px;
            font-weight:600;
            color:#fff;
            background:linear-gradient(135deg,#3EB3FF,#0F5F9E);
            box-shadow:0 12px 30px rgba(46,168,255,0.28),0 0 0 1px rgba(46,168,255,0.25) inset;
            transition:all .25s ease;
            text-decoration:none;
        }
        .btn-sa-primary:hover{background:linear-gradient(135deg,#5CC0FF,#116FAF);color:#fff;transform:translateY(-2px);box-shadow:0 16px 40px rgba(46,168,255,0.38)}
        .btn-sa-primary:focus-visible,.btn-sa-ghost:focus-visible{outline:3px solid rgba(46,168,255,0.6);outline-offset:3px}
        .btn-sa-ghost{
            display:inline-flex;align-items:center;justify-content:center;gap:8px;
            min-height:48px;padding:.65rem 1.35rem;
            border-radius:14px;border:1px solid rgba(255,255,255,0.25);
            color:rgba(255,255,255,0.92);background:rgba(255,255,255,0.04);
            transition:all .25s ease;font-weight:500;text-decoration:none;backdrop-filter:blur(8px);
        }
        .btn-sa-ghost:hover{border-color:rgba(46,168,255,0.65);background:rgba(46,168,255,0.08);color:#fff;transform:translateY(-2px)}
        .nav-cta{
            margin-left:20px;
            display:inline-flex;
            flex-shrink:0;
        }
        .nav-cta .btn-sa-primary{min-height:44px;padding:.45rem 1.1rem;font-size:14px}
        .navbar-toggler{
            border:1px solid rgba(255,255,255,0.22);
            border-radius:10px;
            padding:.5rem .7rem;
            color:rgba(255,255,255,0.8);
            background:rgba(255,255,255,0.04);
        }
        .navbar-toggler:focus{box-shadow:0 0 0 4px rgba(46,168,255,0.2)}
        .navbar-toggler-icon{
            background-image:url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(255,255,255,0.8)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
            width:1.3em;height:1.3em;
        }

        .section{padding:96px 0;position:relative}
        .section-sm{padding:72px 0}
        .section-tag{
            display:inline-flex;align-items:center;gap:10px;
            color:var(--accent);
            font-size:13px;letter-spacing:1px;font-weight:500;
            margin-bottom:16px;
        }
        .section-tag::before{
            content:"";width:20px;height:2px;background:var(--primary);
            border-radius:20px;
        }
        .sec-icon{display:inline-flex;align-items:center;gap:8px;color:var(--primary)}
        .section-title{
            font-size:32px;font-weight:700;line-height:1.4;color:#fff;
            margin-bottom:12px;
        }
        .section-lead{
            color:var(--text-sub);max-width:760px;margin-bottom:30px;font-size:16px;
        }
        .glass-card{
            border-radius:var(--radius);
            background:linear-gradient(145deg,rgba(255,255,255,0.10),rgba(255,255,255,0.03));
            border:1px solid var(--glass-brd);
            backdrop-filter:blur(14px);
            -webkit-backdrop-filter:blur(14px);
            box-shadow:var(--shadow-card);
            transition:all .28s ease;
        }
        .glass-card:hover{background:linear-gradient(145deg,rgba(255,255,255,0.13),rgba(255,255,255,0.05));border-color:rgba(46,168,255,0.5);box-shadow:var(--shadow-card-lg),0 0 24px rgba(46,168,255,0.08);transform:translateY(-4px)}
        .text-primary-custom{color:var(--primary)}
        .text-muted-custom{color:var(--text-sub)}

        .hero{
            min-height:680px;
            padding:150px 0 96px;
            position:relative;
            background:
                radial-gradient(circle at 18% 18%,rgba(46,168,255,0.18),transparent 35%),
                radial-gradient(circle at 82% 30%,rgba(77,227,192,0.10),transparent 30%),
                linear-gradient(135deg,rgba(4,10,18,0.92),rgba(10,29,51,0.88),rgba(4,10,18,0.94)),
                url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            color:#fff;
        }
        .hero::before{
            content:"";
            position:absolute;
            inset:0;
            background-image:linear-gradient(rgba(255,255,255,0.03) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,0.03) 1px,transparent 1px);
            background-size:44px 44px;
            pointer-events:none;
        }
        .hero .container{position:relative;z-index:1}
        .hero-eyebrow{
            display:inline-flex;align-items:center;gap:8px;
            padding:7px 14px;border-radius:50rem;
            background:rgba(46,168,255,0.12);
            border:1px solid rgba(46,168,255,0.24);
            color:var(--primary);font-size:14px;font-weight:500;
            margin-bottom:22px;
        }
        .hero-eyebrow i{font-size:12px}
        .hero-title{
            font-size:clamp(38px,5vw,58px);
            font-weight:700;line-height:1.2;
            letter-spacing:-.5px;
            margin-bottom:24px;
            color:#fff;
            max-width:720px;
        }
        .hero-title .text-glow{
            background:linear-gradient(110deg,#fff,#c9e9ff);
            -webkit-background-clip:text;
            background-clip:text;
            color:transparent;
        }
        .hero-sub{
            font-size:17px;line-height:1.9;color:rgba(255,255,255,0.82);
            max-width:600px;margin-bottom:32px;
        }
        .hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:46px}
        .hero-chips{display:flex;gap:12px;flex-wrap:wrap;padding:0}
        .hero-chip{
            display:inline-flex;align-items:center;gap:8px;
            padding:8px 14px;border-radius:50rem;
            background:rgba(255,255,255,0.05);
            border:1px solid rgba(255,255,255,0.13);
            color:rgba(255,255,255,0.76);
            font-size:13px;
        }
        .hero-chip i{color:var(--accent)}

        .hero-visual{
            border-radius:24px;
            padding:16px;
            background:linear-gradient(150deg,rgba(255,255,255,0.13),rgba(255,255,255,0.035));
            border:1px solid rgba(255,255,255,0.18);
            backdrop-filter:blur(18px);
            box-shadow:0 30px 80px rgba(0,0,0,0.42);
            transform:translateY(12px);
            margin-left:20px;
        }
        .hero-visual-main{position:relative;border-radius:18px;overflow:hidden}
        .hero-visual-main::after{
            content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(6,16,31,0.05),rgba(6,16,31,0.55));pointer-events:none;
        }
        .hero-visual-main img{width:100%;height:300px;object-fit:cover}
        .hero-vidual-overlay{
            position:absolute;left:16px;bottom:14px;z-index:2;
            display:flex;align-items:center;gap:12px;
        }
        .hero-vidual-overlay .glass-pill{
            display:inline-flex;align-items:center;gap:9px;
            padding:9px 15px;border-radius:50rem;
            background:rgba(6,16,31,0.64);
            border:1px solid rgba(255,255,255,0.16);
            backdrop-filter:blur(12px);
        }
        .hero-visual-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
        .hero-visual-tags span{
            padding:5px 12px;background:rgba(255,255,255,0.06);
            border-radius:50rem;font-size:12px;color:rgba(255,255,255,0.74);
        }
        .hero-note{font-size:13px;color:rgba(255,255,255,0.5);margin-top:16px;padding-left:4px}

        .about-block .about-sticky{margin-bottom:40px}
        .value-grid{
            display:grid;
            grid-template-columns:repeat(2,1fr);
            gap:18px;
        }
        .value-card{
            border-radius:var(--radius);
            padding:28px 26px;
            min-height:210px;
            background:linear-gradient(150deg,rgba(255,255,255,0.09),rgba(255,255,255,0.025));
            border:1px solid rgba(255,255,255,0.14);
            backdrop-filter:blur(12px);
            transition:all .28s ease;
            position:relative;
            overflow:hidden;
        }
        .value-card::after{
            content:"";position:absolute;right:-32px;top:-32px;width:120px;height:120px;
            background:radial-gradient(circle,rgba(46,168,255,0.12),transparent 70%);
        }
        .value-card:hover{transform:translateY(-4px);border-color:rgba(46,168,255,0.45);background:linear-gradient(150deg,rgba(46,168,255,0.14),rgba(255,255,255,0.04))}
        .value-num{
            font-family:var(--mono);
            font-size:26px;font-weight:700;
            color:var(--primary);opacity:.8;
            display:block;margin-bottom:8px;
        }
        .value-title{font-size:20px;font-weight:600;color:#fff;margin-bottom:10px}
        .value-desc{color:var(--text-sub);font-size:15px;line-height:1.8}
        .text-link{
            display:inline-flex;align-items:center;gap:8px;
            color:var(--primary);font-weight:500;font-size:15px;
            border-bottom:1px solid transparent;
            transition:all .2s ease;
        }
        .text-link:hover{color:#6FC8FF;border-bottom-color:var(--primary)}

        .business-card-main{
            display:flex;
            flex-direction:column;
            justify-content:flex-end;
            min-height:460px;
            border-radius:var(--radius-lg);
            overflow:hidden;
            position:relative;
            padding:32px;
            border:1px solid rgba(255,255,255,0.14);
            background:
                linear-gradient(180deg,rgba(6,16,31,0.10),rgba(4,10,18,0.94)),
                url('/assets/images/coverpic/cover-12.png') center/cover no-repeat;
            transition:all .35s ease;
        }
        .business-card-main:hover{transform:translateY(-5px);box-shadow:var(--shadow-card-lg),0 0 30px rgba(46,168,255,0.12)}
        .business-badge{
            display:inline-flex;align-items:center;width:max-content;
            padding:5px 13px;border-radius:50rem;
            background:rgba(46,168,255,0.18);
            border:1px solid rgba(46,168,255,0.32);
            color:#9AD7FF;font-size:13px;
            margin-bottom:16px;
        }
        .business-title{font-size:31px;font-weight:700;color:#fff;margin-bottom:10px}
        .business-desc{color:rgba(255,255,255,0.76);max-width:530px;margin-bottom:18px}
        .business-tag-list{display:flex;flex-wrap:wrap;gap:10px}
        .business-tag-list span{background:rgba(255,255,255,0.09);border:1px solid rgba(255,255,255,0.12);padding:5px 12px;border-radius:50rem;font-size:13px;color:rgba(255,255,255,0.85)}
        .secondary-stack{display:flex;flex-direction:column;gap:20px}
        .stack-card{
            border-radius:var(--radius);
            background:linear-gradient(150deg,rgba(255,255,255,0.1),rgba(255,255,255,0.035));
            border:1px solid rgba(255,255,255,0.14);
            padding:26px 24px;
            flex:1;
            transition:all .3s ease;
            backdrop-filter:blur(10px);
            display:flex;
            gap:18px;
        }
        .stack-card:hover{border-color:rgba(46,168,255,0.52);transform:translateY(-4px);background:linear-gradient(150deg,rgba(46,168,255,0.13),rgba(255,255,255,0.04))}
        .stack-icon{
            width:52px;height:52px;border-radius:16px;
            display:inline-flex;align-items:center;justify-content:center;
            background:rgba(46,168,255,0.12);
            border:1px solid rgba(46,168,255,0.3);
            color:var(--accent);
            font-size:21px;
            flex:0 0 auto;
        }
        .stack-card h3{font-size:18px;font-weight:600;color:#fff;margin-bottom:6px}
        .stack-card p{color:var(--text-sub);font-size:14px;line-height:1.72;margin:0}

        .process-items{
            display:grid;
            grid-template-columns:repeat(4,1fr);
            gap:18px;
            position:relative;
        }
        .process-step{
            border-radius:var(--radius);
            padding:30px 24px 26px;
            background:rgba(255,255,255,0.045);
            border:1px solid rgba(255,255,255,0.12);
            backdrop-filter:blur(10px);
            position:relative;
            transition:all .28s ease;
        }
        .process-step:hover{border-color:rgba(46,168,255,0.45);background:rgba(46,168,255,0.08);transform:translateY(-4px)}
        .process-index{
            display:inline-block;
            font-family:var(--mono);
            font-size:14px;font-weight:600;color:var(--amber);
            margin-bottom:14px;
            letter-spacing:1px;
        }
        .process-step h3{font-size:18px;color:#fff;margin-bottom:10px}
        .process-step p{color:var(--text-sub);font-size:14px;line-height:1.76;margin:0}
        .process-arrow{
            position:absolute;top:50%;right:-14px;transform:translateY(-50%);
            color:var(--primary);font-size:16px;z-index:2;
        }

        .trust-grid{
            display:grid;
            grid-template-columns:repeat(4,1fr);
            gap:18px;
        }
        .trust-card{
            border-radius:var(--radius);
            padding:30px 22px 28px;
            background:linear-gradient(150deg,rgba(255,255,255,0.08),rgba(255,255,255,0.025));
            border:1px solid rgba(255,255,255,0.12);
            backdrop-filter:blur(10px);
            transition:all .3s ease;
            text-align:center;
        }
        .trust-card:hover{border-color:rgba(46,168,255,0.5);transform:translateY(-5px);background:linear-gradient(150deg,rgba(46,168,255,0.12),rgba(255,255,255,0.04))}
        .trust-icon{
            width:54px;height:54px;border-radius:50%;
            display:inline-flex;align-items:center;justify-content:center;
            background:rgba(46,168,255,0.12);
            border:1px solid rgba(46,168,255,0.26);
            color:var(--primary);font-size:20px;
            margin-bottom:17px;
        }
        .trust-card h3{font-size:17px;color:#fff;font-weight:600;margin-bottom:9px}
        .trust-card p{color:var(--text-sub);font-size:14px;line-height:1.72;margin:0}
        .trust-tags{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin-top:36px}
        .trust-tags span{
            display:inline-flex;align-items:center;gap:7px;
            padding:7px 16px;border-radius:50rem;
            background:rgba(255,255,255,0.04);
            border:1px solid rgba(255,255,255,0.12);
            color:rgba(255,255,255,0.6);font-size:13px;
        }
        .trust-tags span i{color:var(--accent);font-size:10px}

        .news-panel{
            border-radius:var(--radius-lg);
            background:rgba(255,255,255,0.035);
            border:1px solid rgba(255,255,255,0.09);
            padding:34px 0 4px;
            overflow:hidden;
        }
        .news-head{
            padding:0 34px 22px;
            display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
        }
        .news-more{font-size:14px;color:var(--text-sub);display:inline-flex;align-items:center;gap:8px;border-bottom:1px solid transparent;transition:.2s}
        .news-more:hover{color:var(--primary);border-bottom-color:var(--primary)}
        .news-card{
            display:flex;
            gap:20px;
            align-items:stretch;
            padding:22px 34px;
            border-top:1px solid rgba(255,255,255,0.06);
            transition:background .2s ease;
        }
        .news-card:hover{background:rgba(46,168,255,0.06)}
        .news-thumb{
            width:210px;min-height:118px;flex:0 0 auto;
            border-radius:14px;overflow:hidden;
            background:
                radial-gradient(circle at 80% 20%,rgba(46,168,255,0.25),transparent 60%),
                linear-gradient(150deg,rgba(255,255,255,0.09),rgba(255,255,255,0.02));
            display:flex;align-items:center;justify-content:center;
            border:1px solid rgba(255,255,255,0.08);
            color:rgba(255,255,255,0.35);
        }
        .news-thumb img{
            width:100%;height:100%;object-fit:cover;transition:transform .3s ease;
        }
        .news-thumb a:hover img{transform:scale(1.03)}
        .news-body{min-width:0;flex:1}
        .news-meta{display:flex;align-items:center;gap:12px;margin-bottom:8px}
        .badge-soft{
            padding:4px 12px;border-radius:50rem;
            background:rgba(77,227,192,0.13);
            border:1px solid rgba(77,227,192,0.22);
            color:var(--accent);
            font-size:12px;
        }
        .news-date{color:rgba(255,255,255,0.44);font-size:13px}
        .news-title{font-size:18px;font-weight:600;color:#fff;line-height:1.5;margin-bottom:6px}
        .news-title a:hover{color:var(--primary)}
        .news-desc{color:var(--text-sub);font-size:14px;line-height:1.7;margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;max-width:720px}
        .news-empty{
            padding:36px 32px;
            text-align:center;
            color:var(--text-sub);
            background:rgba(255,255,255,0.035);
        }

        .faq-wrap{max-width:960px}
        .faq-item{
            border:1px solid rgba(255,255,255,0.11);
            border-radius:16px;
            background:rgba(255,255,255,0.03);
            margin-bottom:14px;
            overflow:hidden;
            transition:border-color .22s ease;
        }
        .faq-item:hover{border-color:rgba(46,168,255,0.35)}
        .faq-btn{
            display:flex;width:100%;align-items:center;justify-content:space-between;
            background:transparent;border:0;padding:22px 24px;
            font-size:17px;font-weight:600;color:#fff;
            gap:20px;
        }
        .faq-btn .faq-icon{
            display:inline-flex;justify-content:center;align-items:center;
            width:28px;height:28px;border-radius:50%;
            background:rgba(46,168,255,0.16);
            color:var(--primary);
            font-size:15px;
            transition:transform .25s ease;
            flex:0 0 auto;
        }
        .faq-answer{
            padding:0 24px 22px;
            color:rgba(255,255,255,0.7);
            line-height:1.85;
            font-size:15px;
            display:none;
        }
        .faq-item.open{border-color:rgba(46,168,255,0.4)}
        .faq-item.open .faq-icon{color:var(--accent);background:rgba(77,227,192,0.14);transform:rotate(45deg)}
        .faq-answer.show{display:block}

        .cta-band{
            padding:40px 0;
        }
        .cta-panel{
            position:relative;
            border-radius:var(--radius-lg);
            overflow:hidden;
            padding:64px 58px;
            background:
                radial-gradient(circle at 85% 20%,rgba(46,168,255,0.24),transparent 30%),
                radial-gradient(circle at 14% 86%,rgba(77,227,192,0.10),transparent 28%),
                linear-gradient(140deg,rgba(6,16,31,0.80),rgba(4,10,18,0.94)),
                url('/assets/images/backpic/back-3.png') center/cover no-repeat;
            border:1px solid rgba(255,255,255,0.12);
        }
        .cta-panel::after{
            content:"";
            position:absolute;inset:0;
            background:linear-gradient(135deg,rgba(46,168,255,0.07),transparent 56%);
            pointer-events:none;
        }
        .cta-panel .container-inner{position:relative;z-index:2}
        .cta-title{font-size:32px;font-weight:700;color:#fff;line-height:1.4;margin-bottom:10px}
        .cta-panel p{color:rgba(255,255,255,0.72);max-width:600px;font-size:16px;line-height:1.8}
        .cta-form{max-width:700px;margin-top:26px}
        .cta-form .form-group-custom{display:flex;gap:12px;flex-wrap:wrap}
        .cta-form .form-control-sa{
            flex:1;background:rgba(255,255,255,0.10);
            border:1px solid rgba(255,255,255,0.22);
            border-radius:14px;
            color:#fff;
            min-height:52px;
            padding:.7rem 1.1rem;
        }
        .cta-form .form-control-sa::placeholder{color:rgba(255,255,255,0.45)}
        .cta-form .form-control-sa:focus{outline:0;border-color:var(--primary);box-shadow:0 0 0 4px rgba(46,168,255,0.16);background:rgba(46,168,255,0.1)}
        .form-note{font-size:12px;color:rgba(255,255,255,0.35);margin-top:12px}
        .form-success-message{
            margin-top:14px;padding:10px 16px;border-radius:12px;
            background:rgba(77,227,192,0.11);
            border:1px solid rgba(77,227,192,0.24);
            color:var(--accent);
            font-size:14px;
            display:none;
        }

        .footer{
            background:#040A12;
            border-top:1px solid rgba(255,255,255,0.06);
            padding:62px 0 28px;
            color:var(--text-sub);
            font-size:14px;
        }
        .footer .footer-brand{display:inline-flex;align-items:center;gap:12px;margin-bottom:18px}
        .footer .footer-brand strong{color:#fff;font-size:20px}
        .footer h5{font-size:16px;font-weight:600;color:#fff;margin-bottom:17px}
        .footer-links{list-style:none;padding:0;margin:0}
        .footer-links li{margin-bottom:10px}
        .footer-links a{color:var(--text-sub);transition:.2s}
        .footer-links a:hover{color:var(--primary);padding-left:3px}
        .footer-intro{max-width:340px;color:rgba(255,255,255,0.5);line-height:1.85}
        .footer-contact-list{list-style:none;margin:0;padding:0}
        .footer-contact-list li{margin-bottom:12px;line-height:1.7}
        .footer-contact-list i{display:inline-block;width:24px;color:var(--primary)}
        .footer-bottom{
            border-top:1px solid rgba(255,255,255,0.07);
            margin-top:46px;padding-top:22px;
            font-size:12px;color:rgba(255,255,255,0.34);
            display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
        }
        .go-top{
            position:fixed;bottom:30px;right:30px;z-index:99;
            display:inline-flex;align-items:center;justify-content:center;
            width:48px;height:48px;
            border-radius:50%;
            background:rgba(255,255,255,0.08);
            border:1px solid rgba(255,255,255,0.2);
            color:rgba(255,255,255,0.85);
            backdrop-filter:blur(10px);
            transition:all .25s ease;
        }
        .go-top:hover{background:rgba(46,168,255,0.22);border-color:var(--primary);color:#fff;transform:translateY(-3px)}

        @media (max-width:1199.98px){
            .sa-navbar .nav-link{padding:.45rem .72rem;font-size:14px}
            .sa-navbar .nav-divider{display:none}
            .nav-cta{margin-left:10px}
            .nav-cta .btn-sa-primary{padding:.4rem .85rem;font-size:13px}
            .process-items{grid-template-columns:repeat(2,1fr)}
        }
        @media (max-width:991.98px){
            .section{padding:72px 0}
            .sa-navbar .container{align-items:center}
            .sa-brand{padding:14px 0}
            .sa-navbar .navbar-collapse{
                width:100%;
                background:rgba(6,16,31,0.94);
                backdrop-filter:blur(18px);
                border-radius:0 0 20px 20px;
                border:1px solid rgba(255,255,255,0.08);
                padding:16px;
                margin-top:0;
                position:absolute;top:100%;left:0;right:0;
            }
            .sa-navbar .navbar-nav{flex-direction:column;align-items:stretch;gap:6px;width:100%}
            .sa-navbar .nav-link{width:100%;text-align:left;border-radius:12px;font-size:16px}
            .nav-cta{margin:2px 0 10px;width:100%}
            .nav-cta .btn-sa-primary{width:100%;min-height:48px}
            .hero{padding:130px 0 72px}
            .hero-visual{margin-left:0;margin-top:28px}
            .value-grid{grid-template-columns:repeat(2,1fr)}
            .trust-grid{grid-template-columns:repeat(2,1fr)}
            .business-card-main{min-height:400px}
        }
        @media (max-width:767.98px){
            body{font-size:15px}
            .section{padding:56px 0}
            .container{padding-left:14px;padding-right:14px}
            .hero{padding:120px 0 58px}
            .hero-title{font-size:32px;line-height:1.3}
            .hero-sub{font-size:16px}
            .hero-actions .btn-sa-primary,.hero-actions .btn-sa-ghost{width:100%}
            .section-title{font-size:26px}
            .hero-chip{font-size:12px}
            .value-grid,.trust-grid,.process-items{grid-template-columns:1fr}
            .business-card-main{padding:24px;min-height:350px}
            .business-title{font-size:25px}
            .news-card{flex-direction:column;padding:20px 20px}
            .news-thumb{width:100%;min-height:160px}
            .news-thumb img{height:160px}
            .cta-panel{padding:38px 22px}
            .cta-title{font-size:24px}
            .cta-form .form-group-custom{flex-direction:column}
            .cta-form .form-control-sa{width:100%}
            .footer{padding:44px 0 24px}
            .go-top{bottom:18px;right:18px;width:44px;height:44px}
            .faq-btn{font-size:15px}
        }
        @media (max-width:520px){
            .hero-visual-main img{height:240px}
            .hero-visual{padding:12px}
            .news-head{padding:0 20px 18px}
            .value-card{padding:24px 20px}
            .stack-card{flex-direction:column;gap:12px}
        }

/* roulang page: article */
:root {
            --primary: #2EA8FF;
            --primary-deep: #0F5F9E;
            --primary-glow: rgba(46, 168, 255, 0.45);
            --teal: #4DE3C0;
            --amber: #F5B34D;
            --bg-deep: #040A12;
            --bg-main: #0A1D33;
            --bg-nav: rgba(6, 16, 31, 0.85);
            --text-main: rgba(255, 255, 255, 0.92);
            --text-sub: rgba(255, 255, 255, 0.68);
            --text-weak: rgba(255, 255, 255, 0.46);
            --card-bg: rgba(255, 255, 255, 0.06);
            --card-hover: rgba(255, 255, 255, 0.10);
            --card-border: rgba(255, 255, 255, 0.16);
            --card-glow: rgba(46, 168, 255, 0.22);
            --radius-lg: 18px;
            --radius-md: 14px;
            --radius-btn: 12px;
            --shadow-card: 0 20px 60px rgba(0, 0, 0, 0.35);
            --shadow-hover: 0 28px 80px rgba(0, 0, 0, 0.45);
            --space-section: 96px;
        }

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

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            margin: 0;
            min-height: 100vh;
            background:
                radial-gradient(circle at 78% 12%, rgba(46, 168, 255, 0.08), transparent 26%),
                linear-gradient(180deg, #0A1D33 0%, #06101F 100%);
            color: var(--text-main);
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Hiragino Sans GB", "Helvetica Neue", Arial, sans-serif;
            font-size: 16px;
            line-height: 1.75;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }

        body::before {
            content: "";
            position: fixed;
            inset: 0;
            pointer-events: none;
            z-index: 0;
            background-image:
                linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
            background-size: 48px 48px;
        }

        img {
            max-width: 100%;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.25s ease;
        }

        a:hover {
            color: #ffffff;
        }

        button,
        input {
            font-family: inherit;
        }

        .container {
            max-width: 1280px;
            position: relative;
            z-index: 1;
        }

        .glass-card {
            background: linear-gradient(135deg, rgba(255, 255, 255, 0.09), rgba(255, 255, 255, 0.04));
            border: 1px solid rgba(255, 255, 255, 0.14);
            border-radius: var(--radius-lg);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            box-shadow: var(--shadow-card);
            transition: border-color 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease;
        }

        .glass-card:hover {
            border-color: rgba(46, 168, 255, 0.5);
            box-shadow: var(--shadow-hover);
        }

        .sa-navbar {
            min-height: 76px;
            padding-top: 0;
            padding-bottom: 0;
            background: var(--bg-nav);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            box-shadow: 0 10px 32px rgba(0, 0, 0, 0.18);
            z-index: 1050;
        }

        .sa-navbar .container {
            min-height: 76px;
        }

        .sa-brand {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            color: #ffffff;
        }

        .sa-brand:hover {
            color: #ffffff;
        }

        .sa-logo-mark {
            width: 42px;
            height: 42px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            flex: 0 0 auto;
            color: var(--primary);
            background: rgba(46, 168, 255, 0.12);
            border: 1px solid rgba(46, 168, 255, 0.3);
            border-radius: 12px;
            box-shadow: 0 0 22px rgba(46, 168, 255, 0.15);
        }

        .sa-logo-mark svg {
            width: 26px;
            height: 26px;
            display: block;
        }

        .sa-logo-text {
            display: flex;
            flex-direction: column;
            line-height: 1.15;
        }

        .sa-logo-text strong {
            font-size: 21px;
            font-weight: 700;
            letter-spacing: 1px;
            color: #ffffff;
        }

        .sa-logo-text small {
            font-size: 10px;
            letter-spacing: 2.6px;
            color: var(--text-weak);
            text-transform: uppercase;
            margin-top: 2px;
        }

        .navbar-toggler {
            border: 1px solid rgba(255, 255, 255, 0.25);
            border-radius: 10px;
            padding: 8px 10px;
        }

        .navbar-toggler:focus {
            box-shadow: 0 0 0 4px rgba(46, 168, 255, 0.25);
        }

        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%28255,255,255,0.75%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        .sa-navbar .navbar-collapse {
            position: relative;
        }

        .sa-navbar .nav-item {
            margin: 8px 5px;
        }

        .sa-navbar .navbar-nav {
            flex-wrap: wrap;
        }

        .sa-navbar .nav-link {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 15px;
            font-weight: 600;
            color: rgba(255, 255, 255, 0.72);
            padding: 10px 16px !important;
            border-radius: 999px;
            border: 1px solid transparent;
            background: rgba(255, 255, 255, 0.02);
            transition: all 0.3s ease;
            white-space: nowrap;
            position: relative;
        }

        .sa-navbar .nav-link:hover,
        .sa-navbar .nav-link:focus {
            color: #ffffff;
            background: rgba(255, 255, 255, 0.07);
            border-color: rgba(255, 255, 255, 0.14);
            box-shadow: 0 0 18px rgba(46, 168, 255, 0.12);
        }

        .sa-navbar .nav-link.active {
            color: #ffffff;
            background: rgba(46, 168, 255, 0.17);
            border-color: rgba(46, 168, 255, 0.45);
            box-shadow: 0 0 22px rgba(46, 168, 255, 0.15);
        }

        .sa-navbar .btn-lg-nav-link {
            color: rgba(255, 255, 255, 0.82);
        }

        .nav-cta {
            margin-left: 14px;
            padding: 8px 0;
        }

        .btn-sa-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            min-height: 48px;
            padding: 11px 26px;
            font-size: 15px;
            font-weight: 600;
            color: #ffffff;
            background: linear-gradient(135deg, #2EA8FF 0%, #0F6FBB 100%);
            border: 1px solid rgba(255, 255, 255, 0.18);
            border-radius: var(--radius-btn);
            box-shadow: 0 8px 30px rgba(46, 168, 255, 0.32);
            transition: all 0.3s ease;
            text-decoration: none;
            white-space: nowrap;
        }

        .btn-sa-primary:hover,
        .btn-sa-primary:focus {
            color: #ffffff;
            transform: translateY(-2px);
            box-shadow: 0 12px 38px rgba(46, 168, 255, 0.45);
            border-color: rgba(255, 255, 255, 0.35);
        }

        .btn-sa-primary:active {
            transform: translateY(0);
            box-shadow: 0 6px 16px rgba(46, 168, 255, 0.22);
        }

        .btn-gloss {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            min-height: 48px;
            padding: 11px 24px;
            font-size: 15px;
            font-weight: 600;
            color: rgba(255, 255, 255, 0.88);
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.18);
            border-radius: var(--radius-btn);
            backdrop-filter: blur(10px);
            transition: all 0.3s ease;
            text-decoration: none;
        }

        .btn-gloss:hover,
        .btn-gloss:focus {
            color: #ffffff;
            background: rgba(46, 168, 255, 0.14);
            border-color: rgba(46, 168, 255, 0.5);
            box-shadow: 0 0 24px rgba(46, 168, 255, 0.18);
            transform: translateY(-2px);
        }

        .article-page-main {
            padding: 140px 0 70px;
            position: relative;
            background:
                linear-gradient(180deg, rgba(6, 16, 31, 0.92) 0%, rgba(10, 29, 51, 0.96) 100%),
                url("/assets/images/backpic/back-2.webp") center top / cover no-repeat;
        }

        .article-page-main::before {
            content: "";
            position: absolute;
            left: 0;
            right: 0;
            top: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(46, 168, 255, 0.5), transparent);
        }

        .breadcrumb-nav {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 6px;
            font-size: 14px;
            color: var(--text-weak);
            margin-bottom: 24px;
            padding: 10px 16px;
            background: rgba(255, 255, 255, 0.04);
            border-radius: 999px;
            border: 1px solid rgba(255, 255, 255, 0.08);
            width: fit-content;
            max-width: 100%;
        }

        .breadcrumb-nav a {
            color: var(--text-weak);
            text-decoration: none;
            transition: color 0.2s ease;
        }

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

        .breadcrumb-nav .sep {
            opacity: 0.45;
        }

        .breadcrumb-nav .crumb-current {
            max-width: 280px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
            color: rgba(255, 255, 255, 0.72);
        }

        .article-main-col {
            min-width: 0;
        }

        .article-panel {
            padding: 40px 42px 44px;
            border-radius: 22px;
            background: linear-gradient(145deg, rgba(255, 255, 255, 0.075), rgba(7, 14, 26, 0.22));
            border: 1px solid rgba(255, 255, 255, 0.13);
            box-shadow: var(--shadow-card);
            overflow: hidden;
        }

        .article-cat-label {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 7px 16px;
            border-radius: 999px;
            background: rgba(46, 168, 255, 0.14);
            border: 1px solid rgba(46, 168, 255, 0.3);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 18px;
        }

        .article-h1 {
            font-size: clamp(28px, 3.2vw, 38px);
            line-height: 1.38;
            font-weight: 700;
            color: #ffffff;
            margin: 0 0 20px;
            letter-spacing: 0.5px;
            word-break: break-word;
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 8px 22px;
            align-items: center;
            color: var(--text-weak);
            font-size: 14px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 20px;
            margin-bottom: 32px;
        }

        .article-meta .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 7px;
        }

        .article-meta i {
            color: var(--teal);
            font-size: 13px;
        }

        .article-rich {
            color: rgba(255, 255, 255, 0.86);
            font-size: 16.5px;
            line-height: 1.85;
        }

        .article-rich > p {
            margin: 0 0 28px;
            max-width: 100%;
        }

        .article-rich h2 {
            font-size: 24px;
            font-weight: 700;
            color: #ffffff;
            line-height: 1.5;
            margin: 40px 0 20px;
            padding-left: 16px;
            border-left: 4px solid var(--primary);
            background: linear-gradient(90deg, rgba(46, 168, 255, 0.1), transparent);
            border-radius: 0 10px 10px 0;
        }

        .article-rich h3 {
            font-size: 20px;
            font-weight: 700;
            color: #ffffff;
            margin: 34px 0 16px;
        }

        .article-rich h4 {
            font-size: 17px;
            font-weight: 700;
            color: rgba(255, 255, 255, 0.9);
            margin: 26px 0 12px;
        }

        .article-rich a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 3px;
        }

        .article-rich a:hover {
            color: #ffffff;
        }

        .article-rich blockquote {
            margin: 34px 0;
            padding: 24px 28px;
            background: rgba(255, 255, 255, 0.04);
            border-left: 4px solid var(--teal);
            border-radius: 0 14px 14px 0;
            color: rgba(255, 255, 255, 0.78);
            font-size: 15.5px;
        }

        .article-rich ul,
        .article-rich ol {
            margin: 0 0 28px;
            padding-left: 22px;
        }

        .article-rich li {
            margin-bottom: 8px;
        }

        .article-rich img {
            height: auto;
            margin: 26px 0;
            border-radius: 16px;
            border: 1px solid rgba(255, 255, 255, 0.1);
            box-shadow: var(--shadow-card);
        }

        .article-rich figure {
            margin: 34px 0;
        }

        .article-rich figcaption {
            text-align: center;
            font-size: 13px;
            color: var(--text-weak);
            padding-top: 10px;
        }

        .article-endspace {
            margin-top: 44px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 26px;
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            justify-content: space-between;
            align-items: center;
        }

        .article-end-links {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }

        .article-tag-line {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 10px;
            margin-top: 22px;
        }

        .article-tag-line .tag-label {
            color: var(--text-weak);
            font-size: 14px;
        }

        .article-tag-line .tag-chip {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            padding: 5px 14px;
            border-radius: 999px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.12);
            color: var(--text-sub);
            font-size: 13px;
            text-decoration: none;
        }

        .article-tag-line .tag-chip:hover {
            color: var(--primary);
            border-color: rgba(46, 168, 255, 0.5);
        }

        .aside-col {
            position: relative;
        }

        .aside-sticky {
            position: sticky;
            top: 100px;
        }

        .side-card {
            padding: 26px;
            border-radius: var(--radius-lg);
            margin-bottom: 24px;
            background: linear-gradient(145deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.03));
        }

        .side-card .side-icon {
            width: 34px;
            height: 34px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
            color: var(--teal);
            background: rgba(77, 227, 192, 0.1);
            border: 1px solid rgba(77, 227, 192, 0.24);
            margin-right: 8px;
            font-size: 15px;
        }

        .side-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: #ffffff;
            margin: 0 0 14px;
        }

        .side-card .side-category-name {
            font-size: 22px;
            font-weight: 700;
            color: var(--primary);
            margin: 10px 0 14px;
            line-height: 1.4;
            word-break: break-word;
        }

        .side-card p {
            font-size: 14.5px;
            line-height: 1.75;
            color: var(--text-sub);
            margin-bottom: 18px;
        }

        .side-card .btn-sa-primary,
        .side-card .btn-gloss {
            width: 100%;
        }

        .side-business-thumb {
            border-radius: 14px;
            overflow: hidden;
            margin-bottom: 16px;
            border: 1px solid rgba(255, 255, 255, 0.08);
        }

        .side-business-thumb img {
            width: 100%;
            height: 130px;
            object-fit: cover;
            display: block;
        }

        .related-panel {
            margin-top: 24px;
            padding: 26px;
        }

        .related-panel h2 {
            font-size: 20px;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

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

        .related-list li {
            margin-bottom: 10px;
        }

        .related-list a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 12px 14px;
            border-radius: 12px;
            background: rgba(255, 255, 255, 0.045);
            border: 1px solid rgba(255, 255, 255, 0.07);
            color: rgba(255, 255, 255, 0.78);
            text-decoration: none;
            transition: all 0.25s ease;
            line-height: 1.45;
        }

        .related-list a:hover {
            background: rgba(46, 168, 255, 0.1);
            border-color: rgba(46, 168, 255, 0.35);
            color: #ffffff;
            transform: translateX(4px);
        }

        .related-list a i {
            color: var(--primary);
            flex: 0 0 auto;
        }

        .notfound-wrap {
            padding: 70px 32px;
            text-align: center;
            border-radius: 22px;
            background: linear-gradient(145deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.02));
        }

        .notfound-wrap .nf-icon {
            width: 76px;
            height: 76px;
            margin: 0 auto 22px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 20px;
            font-size: 30px;
            color: var(--amber);
            background: rgba(245, 179, 77, 0.1);
            border: 1px solid rgba(245, 179, 77, 0.25);
        }

        .notfound-wrap h1 {
            font-size: 34px;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 12px;
        }

        .notfound-wrap p {
            color: var(--text-sub);
            max-width: 420px;
            margin: 0 auto 24px;
        }

        .article-cta-band {
            margin-top: 70px;
            position: relative;
            border-radius: 24px;
            padding: 46px 48px;
            overflow: hidden;
            background:
                linear-gradient(100deg, rgba(6, 16, 31, 0.94), rgba(10, 29, 51, 0.72)),
                url("/assets/images/backpic/back-3.png") center / cover no-repeat;
        }

        .article-cta-band::before {
            content: "";
            position: absolute;
            right: 20px;
            top: -70px;
            width: 220px;
            height: 220px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(46, 168, 255, 0.26), transparent 65%);
            pointer-events: none;
        }

        .article-cta-band h2 {
            font-size: 28px;
            font-weight: 700;
            color: #ffffff;
            margin: 0 0 14px;
        }

        .article-cta-band p {
            color: var(--text-sub);
            margin: 0 0 24px;
            max-width: 700px;
        }

        .article-cta-band .cta-group {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }

        .footer {
            margin-top: 0;
            background: #040A12;
            border-top: 1px solid rgba(255, 255, 255, 0.07);
            padding: 68px 0 22px;
            font-size: 14px;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 18px;
        }

        .footer-brand .sa-logo-mark {
            width: 40px;
            height: 40px;
            border-radius: 11px;
        }

        .footer-brand .sa-logo-mark svg {
            width: 24px;
            height: 24px;
        }

        .footer-intro {
            color: var(--text-weak);
            line-height: 1.9;
            margin: 0;
            max-width: 430px;
        }

        .footer h5 {
            font-size: 16px;
            font-weight: 700;
            color: #ffffff;
            margin: 6px 0 18px;
            letter-spacing: 1px;
        }

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

        .footer-links li,
        .footer-contact-list li {
            margin-bottom: 12px;
            color: var(--text-weak);
            line-height: 1.7;
        }

        .footer-links a {
            display: inline-block;
            color: var(--text-weak);
            text-decoration: none;
            position: relative;
        }

        .footer-links a::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: -3px;
            width: 0;
            height: 1px;
            background-color: var(--primary);
            transition: width 0.3s ease;
        }

        .footer-links a:hover {
            color: #ffffff;
        }

        .footer-links a:hover::after {
            width: 100%;
        }

        .footer-contact-list li {
            display: flex;
            gap: 10px;
            align-items: flex-start;
        }

        .footer-contact-list i {
            margin-top: 6px;
            color: var(--primary);
            font-size: 13px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.07);
            margin-top: 38px;
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 8px 20px;
            color: var(--text-weak);
            font-size: 13px;
        }

        @media (max-width: 991.98px) {
            .sa-navbar .navbar-collapse {
                background: rgba(6, 16, 31, 0.98);
                border-radius: 18px;
                margin-top: 12px;
                padding: 16px 12px 20px;
                border: 1px solid rgba(255, 255, 255, 0.1);
            }

            .sa-navbar .navbar-nav {
                width: 100%;
            }

            .sa-navbar .nav-item {
                margin: 4px 0;
            }

            .sa-navbar .nav-link {
                width: 100%;
                justify-content: flex-start;
                border-radius: 12px;
                white-space: normal;
            }

            .nav-cta {
                margin: 12px 0 0;
                width: 100%;
                padding-top: 12px;
                border-top: 1px solid rgba(255, 255, 255, 0.07);
            }

            .nav-cta .btn-sa-primary {
                width: 100%;
            }

            .article-page-main {
                padding-top: 112px;
            }

            .article-panel {
                padding: 30px 24px;
            }

            .aside-sticky {
                position: static;
                margin-top: 16px;
            }

            .article-cta-band {
                padding: 34px 26px;
            }
        }

        @media (max-width: 767.98px) {
            .article-panel {
                padding: 24px 18px;
                border-radius: 16px;
            }

            .article-meta {
                gap: 10px 14px;
            }

            .article-rich p {
                font-size: 15.5px;
            }

            .breadcrumb-nav {
                width: 100%;
                border-radius: 14px;
                font-size: 13px;
            }

            .article-endspace,
            .article-end-links {
                flex-direction: column;
                align-items: flex-start;
                width: 100%;
            }

            .btn-sa-primary,
            .btn-gloss {
                width: 100%;
            }

            .nav-cta .btn-sa-primary {
                width: 100%;
            }
        }

        @media (max-width: 575.98px) {
            .article-h1 {
                font-size: 28px;
            }

            .article-cat-label {
                font-size: 12px;
            }

            .article-cta-band {
                border-radius: 18px;
            }

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

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

/* roulang page: category1 */
:root {
        --primary: #2EA8FF;
        --primary-deep: #0F5F9E;
        --primary-glow: rgba(46, 168, 255, .45);
        --accent: #4DE3C0;
        --amber: #F5B34D;
        --bg-page: #06101F;
        --bg-soft: #0A1D33;
        --bg-deep: #040A12;
        --text-main: rgba(255, 255, 255, .92);
        --text-sub: rgba(255, 255, 255, .68);
        --text-muted: rgba(255, 255, 255, .46);
        --line: rgba(255, 255, 255, .16);
        --card-bg: rgba(255, 255, 255, .055);
        --radius: 18px;
        --radius-lg: 24px;
        --shadow-lg: 0 24px 70px rgba(0, 0, 0, .32);
        --shadow-hover: 0 30px 80px rgba(0, 0, 0, .42);
        --header-h: 76px;
        --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Hiragino Sans GB", sans-serif;
    }

    * {
        box-sizing: border-box;
    }

    html {
        scroll-behavior: smooth;
    }

    html,
    body {
        padding: 0;
        margin: 0;
    }

    body {
        background:
            radial-gradient(circle at 80% 6%, rgba(46, 168, 255, .12), transparent 22%),
            radial-gradient(circle at 8% 38%, rgba(77, 227, 192, .06), transparent 26%),
            linear-gradient(150deg, #071523 0%, #040a12 100%);
        background-color: var(--bg-page);
        color: var(--text-main);
        font-family: var(--font-sans);
        font-size: 16px;
        line-height: 1.75;
        overflow-x: hidden;
    }

    body::before {
        content: "";
        position: fixed;
        inset: 0;
        background-image: radial-gradient(rgba(255, 255, 255, .1) 1px, transparent 1px);
        background-size: 32px 32px;
        opacity: .22;
        pointer-events: none;
        z-index: 0;
    }

    body .container,
    header,
    footer,
    main,
    .back-top {
        position: relative;
        z-index: 1;
    }

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

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

    a:hover {
        color: #7bc8ff;
    }

    h1,
    h2,
    h3,
    h4,
    h5,
    h6 {
        color: rgba(255, 255, 255, .97);
        font-weight: 650;
        line-height: 1.25;
        margin-top: 0;
        letter-spacing: .01em;
    }

    button,
    input,
    textarea {
        font-family: inherit;
    }

    :focus-visible {
        outline: 2px solid var(--primary);
        outline-offset: 3px;
    }

    .container {
        max-width: 1280px;
    }

    .section-block {
        padding: 80px 0 84px;
        position: relative;
    }

    .section-head {
        margin-bottom: 44px;
    }

    .section-head .mb-0,
    .section-head p {
        margin-bottom: 0;
    }

    .section-kicker,
    .eyebrow,
    .category-kicker,
    .card-kicker {
        display: inline-flex;
        align-items: center;
        gap: 10px;
        color: var(--accent);
        font-size: 13px;
        font-weight: 700;
        letter-spacing: .1em;
    }

    .section-kicker::before,
    .category-kicker::before,
    .card-kicker::before {
        content: "";
        width: 30px;
        height: 2px;
        border-radius: 2px;
        background: var(--primary);
        display: inline-block;
    }

    .section-title-lg {
        font-size: 36px;
        font-weight: 670;
        letter-spacing: .02em;
        margin: 12px 0 18px;
        color: rgba(255, 255, 255, .96);
    }

    .desc-lg {
        color: var(--text-sub);
        font-size: 17px;
        line-height: 1.8;
        margin-bottom: 0;
    }

    .btn-sa-primary,
    .btn-sa-ghost {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 10px;
        min-height: 50px;
        padding: .72rem 1.8rem;
        border-radius: 999px;
        font-weight: 600;
        border: 1px solid transparent;
        letter-spacing: .02em;
        transition: transform .22s ease, box-shadow .22s ease, background .22s ease, border-color .22s ease;
        white-space: nowrap;
    }

    .btn-sa-primary {
        background: linear-gradient(135deg, #1e88e5 0%, #2EA8FF 100%);
        color: #fff;
        box-shadow: 0 10px 30px rgba(46, 168, 255, .28);
        border-color: rgba(46, 168, 255, .5);
    }

    .btn-sa-primary:hover {
        color: #fff;
        transform: translateY(-2px);
        background: linear-gradient(135deg, #2EA8FF 0%, #63bdff 100%);
        box-shadow: 0 14px 40px rgba(46, 168, 255, .42);
    }

    .btn-sa-primary:active {
        transform: translateY(0);
        box-shadow: 0 6px 20px rgba(46, 168, 255, .25);
    }

    .btn-sa-ghost {
        background: rgba(255, 255, 255, .04);
        color: rgba(255, 255, 255, .88);
        border-color: rgba(255, 255, 255, .2);
    }

    .btn-sa-ghost:hover {
        color: #fff;
        border-color: rgba(46, 168, 255, .56);
        background: rgba(46, 168, 255, .14);
        transform: translateY(-2px);
    }

    .btn-sa-ghost:active {
        transform: translateY(0);
    }

    .btn-block-mobile {
        width: auto;
    }

    /* Header / Nav */
    .sa-navbar {
        min-height: var(--header-h);
        padding-top: 0;
        padding-bottom: 0;
        background: rgba(6, 16, 31, .85);
        backdrop-filter: blur(18px);
        -webkit-backdrop-filter: blur(18px);
        border-bottom: 1px solid rgba(255, 255, 255, .08);
    }

    .sa-navbar .container {
        min-height: var(--header-h);
    }

    .sa-brand {
        display: inline-flex;
        align-items: center;
        gap: 12px;
        color: #fff;
        text-decoration: none;
        padding-right: 10px;
    }

    .sa-logo-mark {
        width: 42px;
        height: 42px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        border-radius: 13px;
        background: linear-gradient(145deg, rgba(46, 168, 255, .34), rgba(46, 168, 255, .08));
        border: 1px solid rgba(46, 168, 255, .32);
        box-shadow: 0 0 20px rgba(46, 168, 255, .18);
    }

    .sa-logo-mark svg {
        width: 28px;
        height: 28px;
        display: block;
    }

    .sa-logo-text {
        display: flex;
        flex-direction: column;
        line-height: 1.15;
    }

    .sa-logo-text strong {
        color: #fff;
        font-size: 21px;
        font-weight: 700;
        letter-spacing: .02em;
    }

    .sa-logo-text small {
        font-size: 10px;
        letter-spacing: .32em;
        color: var(--primary);
        text-transform: uppercase;
        margin-top: 3px;
    }

    .sa-navbar .navbar-nav {
        gap: 6px;
        margin-left: 16px;
    }

    .sa-navbar .nav-link {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        padding: 9px 18px;
        border-radius: 999px;
        font-size: 15px;
        font-weight: 500;
        color: rgba(255, 255, 255, .72);
        background: transparent;
        transition: color .2s ease, background .2s ease, border-color .2s ease, box-shadow .2s ease;
        border: 1px solid transparent;
    }

    .sa-navbar .nav-link:hover {
        color: #fff;
        background: rgba(255, 255, 255, .06);
    }

    .sa-navbar .nav-link.active,
    .sa-navbar .nav-link[aria-current="page"] {
        color: #fff;
        background: rgba(46, 168, 255, .16);
        border-color: rgba(46, 168, 255, .34);
        box-shadow: 0 0 14px rgba(46, 168, 255, .12);
    }

    .nav-cta .btn-sa-primary {
        min-height: 44px;
        padding: .48rem 1.25rem;
        font-size: 15px;
    }

    .navbar-toggler {
        border: 1px solid rgba(255, 255, 255, .2);
        border-radius: 14px;
        padding: .45rem .7rem;
        background: rgba(255, 255, 255, .04);
    }

    .navbar-toggler:focus {
        box-shadow: none;
        border-color: var(--primary);
    }

    .navbar-toggler-icon {
        background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%28255,255,255,0.92%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
    }

    /* Category Hero */
    .category-hero {
        position: relative;
        min-height: 520px;
        display: flex;
        align-items: center;
        padding: 172px 0 84px;
        overflow: hidden;
        background:
            linear-gradient(100deg, rgba(3, 8, 16, .92) 0%, rgba(4, 13, 24, .82) 36%, rgba(5, 26, 47, .46) 78%),
            url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
        border-bottom: 1px solid rgba(255, 255, 255, .08);
    }

    .category-hero::after {
        content: "";
        position: absolute;
        right: -10%;
        top: 18%;
        width: 400px;
        height: 400px;
        background: radial-gradient(circle, rgba(46, 168, 255, .16), transparent 64%);
        border-radius: 50%;
        z-index: 0;
    }

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

    .sa-breadcrumb {
        margin-bottom: 30px;
    }

    .sa-breadcrumb .breadcrumb {
        margin-bottom: 0;
    }

    .sa-breadcrumb .breadcrumb-item {
        font-size: 14px;
        color: rgba(255, 255, 255, .48);
    }

    .sa-breadcrumb .breadcrumb-item a {
        color: rgba(255, 255, 255, .58);
    }

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

    .sa-breadcrumb .breadcrumb-item.active {
        color: rgba(255, 255, 255, .82);
    }

    .breadcrumb-item + .breadcrumb-item::before {
        content: "/";
        color: rgba(255, 255, 255, .3);
        padding-left: .5rem;
        padding-right: .4rem;
    }

    .category-kicker {
        margin-bottom: 16px;
    }

    .category-hero h1 {
        font-size: 52px;
        font-weight: 720;
        line-height: 1.18;
        color: #fff;
        margin: 10px 0 20px;
        max-width: 800px;
    }

    .category-hero .hero-lead {
        max-width: 720px;
        color: rgba(255, 255, 255, .78);
        font-size: 17px;
        line-height: 1.85;
        margin-bottom: 34px;
    }

    .hero-cta {
        display: flex;
        flex-wrap: wrap;
        gap: 14px;
    }

    .hero-cta .btn-sa-primary,
    .hero-cta .btn-sa-ghost {
        min-width: 160px;
    }

    /* Glass & Cards */
    .glass-card {
        position: relative;
        background: rgba(255, 255, 255, .055);
        border: 1px solid rgba(255, 255, 255, .14);
        border-radius: 20px;
        box-shadow: var(--shadow-lg);
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
        transition: transform .22s ease, border-color .25s ease, box-shadow .25s ease;
        overflow: hidden;
    }

    .glass-card::before {
        content: "";
        position: absolute;
        inset: 0 0 auto 0;
        height: 1px;
        background: linear-gradient(90deg, transparent, rgba(255, 255, 255, .2), transparent);
    }

    .glass-card:hover {
        transform: translateY(-4px);
        border-color: rgba(46, 168, 255, .5);
        box-shadow: var(--shadow-hover);
    }

    .media-frame {
        position: relative;
        border-radius: 22px;
        padding: 10px;
        background: linear-gradient(145deg, rgba(255, 255, 255, .13), rgba(255, 255, 255, .03));
        border: 1px solid rgba(255, 255, 255, .16);
        box-shadow: var(--shadow-lg);
    }

    .media-frame img {
        width: 100%;
        border-radius: 16px;
        object-fit: cover;
        aspect-ratio: 16 / 12;
        display: block;
    }

    .media-badge {
        position: absolute;
        left: 30px;
        bottom: 30px;
        display: inline-flex;
        align-items: center;
        gap: 9px;
        background: rgba(6, 16, 31, .72);
        backdrop-filter: blur(10px);
        -webkit-backdrop-filter: blur(10px);
        border: 1px solid rgba(255, 255, 255, .16);
        border-radius: 999px;
        padding: 9px 16px;
        color: rgba(255, 255, 255, .88);
        font-size: 14px;
        font-weight: 500;
    }

    .media-badge i {
        color: var(--accent);
    }

    .intro-block {
        padding-top: 110px;
    }

    .tick-list {
        list-style: none;
        padding: 0;
        margin: 26px 0 28px;
    }

    .tick-list li {
        display: flex;
        align-items: flex-start;
        gap: 12px;
        font-size: 16px;
        color: var(--text-sub);
        margin-bottom: 12px;
    }

    .tick-list i {
        color: var(--accent);
        margin-top: 6px;
        font-size: 14px;
    }

    .text-arrow {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        font-weight: 600;
        color: var(--primary);
        letter-spacing: .02em;
    }

    .text-arrow:hover {
        color: var(--accent);
    }

    .text-arrow i {
        transition: transform .2s ease;
    }

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

    /* Business profile */
    .business-area {
        padding: 18px 0 98px;
    }

    .business-card-main {
        min-height: 440px;
        display: flex;
        flex-direction: column;
        padding: 40px 38px;
        background:
            linear-gradient(to bottom, rgba(4, 10, 18, .18), rgba(4, 10, 18, .3)),
            linear-gradient(160deg, rgba(46, 168, 255, .15), rgba(255, 255, 255, .02) 46%);
        border-radius: 22px;
        border: 1px solid rgba(255, 255, 255, .14);
        overflow: hidden;
        position: relative;
    }

    .business-card-main::before {
        content: "";
        position: absolute;
        width: 220px;
        height: 220px;
        background: radial-gradient(circle, rgba(46, 168, 255, .3), transparent 70%);
        top: -90px;
        right: -80px;
        border-radius: 50%;
    }

    .business-card-main .icon-badge {
        width: 54px;
        height: 54px;
        border-radius: 16px;
        background: rgba(46, 168, 255, .2);
        color: var(--primary);
        display: inline-flex;
        align-items: center;
        justify-content: center;
        font-size: 23px;
        margin-bottom: 24px;
        border: 1px solid rgba(46, 168, 255, .32);
        box-shadow: 0 0 18px rgba(46, 168, 255, .14);
    }

    .business-card-main h3 {
        font-size: 30px;
        font-weight: 650;
        margin-bottom: 14px;
    }

    .business-card-main p {
        color: var(--text-sub);
        font-size: 16px;
        line-height: 1.85;
    }

    .business-mini-card {
        flex: 1;
        padding: 30px 28px;
        border-radius: 20px;
        background: rgba(255, 255, 255, .055);
        border: 1px solid rgba(255, 255, 255, .14);
        position: relative;
        overflow: hidden;
    }

    .business-mini-card .icon-badge {
        display: inline-flex;
        width: 42px;
        height: 42px;
        align-items: center;
        justify-content: center;
        border-radius: 13px;
        background: rgba(77, 227, 192, .14);
        color: var(--accent);
        margin-bottom: 16px;
        font-size: 18px;
    }

    .business-mini-card h4 {
        font-size: 19px;
        font-weight: 600;
        margin-bottom: 8px;
    }

    .business-mini-card p {
        color: var(--text-sub);
        font-size: 15px;
        line-height: 1.75;
        margin-bottom: 0;
    }

    .divider-vertical {
        width: 1px;
        background: rgba(255, 255, 255, .12);
        margin: 0 18px;
    }

    /* Statement split */
    .statement-band {
        padding: 84px 0;
        border-top: 1px solid rgba(255, 255, 255, .08);
        border-bottom: 1px solid rgba(255, 255, 255, .08);
        background: rgba(255, 255, 255, .02);
    }

    .statement-list {
        margin: 0;
        padding: 0;
    }

    .statement-list li {
        list-style: none;
        display: flex;
        align-items: flex-start;
        gap: 18px;
        padding: 20px 0;
        border-bottom: 1px solid rgba(255, 255, 255, .09);
    }

    .statement-list li:last-child {
        border-bottom: 0;
        padding-bottom: 0;
    }

    .statement-num {
        font-family: "DIN Alternate", "Bebas Neue", "Arial Narrow", sans-serif;
        font-size: 20px;
        font-weight: 700;
        color: var(--amber);
        letter-spacing: .08em;
        min-width: 40px;
        line-height: 1.4;
    }

    .statement-list strong {
        display: block;
        color: rgba(255, 255, 255, .88);
        font-size: 17px;
        margin-bottom: 5px;
    }

    .statement-list p {
        color: var(--text-sub);
        font-size: 15px;
        margin-bottom: 0;
    }

    /* Large transmedia band */
    .transmedia-band {
        position: relative;
        border-radius: 28px;
        overflow: hidden;
        border: 1px solid rgba(255, 255, 255, .14);
        box-shadow: var(--shadow-lg);
        background:
            linear-gradient(to right, rgba(4, 10, 18, .96), rgba(5, 18, 32, .68) 46%, rgba(7, 30, 50, .46)),
            url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
        padding: 58px 56px;
    }

    .transmedia-band h2 {
        font-size: 32px;
        margin: 10px 0 18px;
        max-width: 320px;
    }

    .transmedia-band .lead-copy {
        color: rgba(255, 255, 255, .7);
        font-size: 16px;
        line-height: 1.85;
        margin-bottom: 0;
    }

    .phase-list {
        display: grid;
        gap: 14px;
    }

    .phase-item {
        padding: 18px 22px;
        background: rgba(255, 255, 255, .07);
        border: 1px solid rgba(255, 255, 255, .14);
        border-radius: 18px;
        transition: border-color .2s ease, background .2s ease;
    }

    .phase-item:hover {
        border-color: rgba(46, 168, 255, .5);
        background: rgba(255, 255, 255, .09);
    }

    .phase-item span {
        display: inline-flex;
        align-items: center;
        gap: 10px;
        font-weight: 700;
        color: rgba(255, 255, 255, .92);
        font-size: 16px;
        margin-bottom: 4px;
    }

    .phase-item span i {
        color: var(--accent);
        font-size: 14px;
    }

    .phase-item p {
        color: var(--text-sub);
        font-size: 15px;
        margin: 6px 0 0;
        line-height: 1.6;
    }

    /* Double visual compare */
    .compare-area {
        padding-top: 88px;
    }

    .figure-card {
        position: relative;
        border-radius: 24px;
        overflow: hidden;
        border: 1px solid rgba(255, 255, 255, .14);
        box-shadow: var(--shadow-lg);
        background: rgba(255, 255, 255, .04);
        min-height: 330px;
    }

    .figure-card img {
        width: 100%;
        height: 100%;
        min-height: 330px;
        object-fit: cover;
        display: block;
    }

    .figure-card figcaption {
        position: absolute;
        left: 20px;
        right: 20px;
        bottom: 18px;
        background: rgba(5, 14, 24, .6);
        backdrop-filter: blur(8px);
        -webkit-backdrop-filter: blur(8px);
        border: 1px solid rgba(255, 255, 255, .16);
        border-radius: 16px;
        color: #fff;
        padding: 12px 18px;
        font-size: 15px;
        line-height: 1.6;
        font-weight: 500;
    }

    .process-stack {
        border-radius: 24px;
        background: rgba(255, 255, 255, .05);
        border: 1px solid rgba(255, 255, 255, .14);
        padding: 38px 34px;
        min-height: 420px;
    }

    .process-step {
        display: flex;
        gap: 16px;
        padding: 17px 0;
        border-bottom: 1px solid rgba(255, 255, 255, .08);
    }

    .process-step:last-child {
        border-bottom: 0;
        padding-bottom: 0;
    }

    .process-step strong {
        font-size: 16px;
        display: block;
        margin: 0 0 5px;
        color: rgba(255, 255, 255, .9);
        font-weight: 600;
    }

    .process-step p {
        color: var(--text-sub);
        font-size: 15px;
        line-height: 1.7;
        margin: 0;
    }

    .step-num {
        font-family: "DIN Alternate", "Bebas Neue", sans-serif;
        font-size: 18px;
        font-weight: 700;
        color: var(--primary);
        min-width: 34px;
        padding-top: 2px;
    }

    /* Trust block */
    .trust-wrap {
        padding-top: 0;
    }

    .trust-panel {
        border-radius: 26px;
        background: rgba(255, 255, 255, .04);
        border: 1px solid rgba(255, 255, 255, .14);
        padding: 44px 44px;
        box-shadow: var(--shadow-lg);
    }

    .trust-intro h2 {
        font-size: 28px;
        margin-top: 12px;
        margin-bottom: 14px;
    }

    .trust-list {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 14px;
    }

    .trust-item {
        border-radius: 18px;
        background: rgba(255, 255, 255, .04);
        border: 1px solid rgba(255, 255, 255, .1);
        padding: 22px;
        min-height: 132px;
        transition: background .2s ease, border-color .2s ease;
    }

    .trust-item:hover {
        border-color: rgba(46, 168, 255, .36);
        background: rgba(255, 255, 255, .055);
    }

    .trust-item h4 {
        display: flex;
        align-items: center;
        gap: 10px;
        font-size: 17px;
        font-weight: 600;
        margin-bottom: 8px;
    }

    .trust-item h4 i {
        color: var(--primary);
        font-size: 18px;
    }

    .trust-item p {
        color: var(--text-sub);
        font-size: 15px;
        line-height: 1.75;
        margin-bottom: 0;
    }

    /* FAQ */
    .faq-section {
        background: rgba(0, 0, 0, .08);
        border-top: 1px solid rgba(255, 255, 255, .08);
        border-bottom: 1px solid rgba(255, 255, 255, .08);
    }

    .faq-sticky-title {
        position: sticky;
        top: 130px;
    }

    .faq-intro p {
        color: var(--text-sub);
    }

    .sa-accordion .accordion-item {
        background: rgba(255, 255, 255, .04);
        border: 1px solid rgba(255, 255, 255, .15);
        border-radius: 18px !important;
        margin-bottom: 14px;
        overflow: hidden;
    }

    .sa-accordion .accordion-header {
        border: 0;
    }

    .sa-accordion .accordion-button {
        background: transparent;
        color: rgba(255, 255, 255, .9);
        box-shadow: none;
        font-size: 17px;
        font-weight: 600;
        padding: 20px 22px;
        transition: background .2s ease;
        border-radius: 0 !important;
    }

    .sa-accordion .accordion-button:not(.collapsed) {
        background: rgba(46, 168, 255, .1);
        color: #fff;
    }

    .sa-accordion .accordion-button::after {
        width: 20px;
        height: 20px;
        background: none;
        font-family: "Font Awesome 6 Free";
        font-weight: 900;
        content: "\2b";
        color: var(--primary);
        text-align: center;
        line-height: 20px;
        transition: transform .2s ease;
    }

    .sa-accordion .accordion-button:not(.collapsed)::after {
        content: "\f00d";
        color: var(--accent);
        transform: none;
    }

    .accordion-button:focus {
        box-shadow: none;
    }

    .sa-accordion .accordion-body {
        color: var(--text-sub);
        padding: 4px 22px 22px;
        font-size: 16px;
        line-height: 1.85;
    }

    /* Next category & CTA */
    .next-band {
        padding: 96px 0 0;
    }

    .next-panel {
        background:
            linear-gradient(120deg, rgba(6, 16, 31, .9), rgba(46, 168, 255, .1)),
            url('/assets/images/coverpic/cover-9.png') right center / cover no-repeat;
        border: 1px solid rgba(255, 255, 255, .15);
        border-radius: 28px;
        padding: 52px 54px;
        box-shadow: var(--shadow-lg);
        position: relative;
    }

    .next-panel p {
        color: var(--text-sub);
        max-width: 520px;
    }

    .cta-block {
        padding: 90px 0 104px;
    }

    .cta-panel {
        position: relative;
        border-radius: 30px;
        background:
            radial-gradient(circle at 8% 20%, rgba(46, 168, 255, .18), transparent 30%),
            radial-gradient(circle at 88% 90%, rgba(77, 227, 192, .09), transparent 32%),
            rgba(255, 255, 255, .04);
        border: 1px solid rgba(255, 255, 255, .16);
        overflow: hidden;
        box-shadow: var(--shadow-lg);
        padding: 54px 52px;
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
    }

    .cta-panel h2 {
        font-size: 32px;
        line-height: 1.25;
        margin: 14px 0 16px;
    }

    .cta-panel .desc-copy {
        color: var(--text-sub);
        font-size: 16px;
        max-width: 520px;
        margin-bottom: 24px;
    }

    .cta-mini-list {
        list-style: none;
        padding: 0;
        margin: 0;
        max-width: 420px;
    }

    .cta-mini-list li {
        display: flex;
        gap: 10px;
        color: var(--text-sub);
        font-size: 15px;
        padding: 7px 0;
    }

    .cta-mini-list i {
        color: var(--accent);
        margin-top: 6px;
    }

    .contact-form {
        padding: 8px 4px 0 26px;
    }

    .form-label-con {
        font-size: 14px;
        color: var(--text-sub);
        margin-bottom: 8px;
        display: block;
        letter-spacing: .02em;
    }

    .form-control {
        background: rgba(255, 255, 255, .06);
        border: 1px solid rgba(255, 255, 255, .18);
        border-radius: 12px;
        color: rgba(255, 255, 255, .94);
        min-height: 52px;
        padding: 12px 18px;
        font-size: 15px;
        transition: border-color .2s ease, box-shadow .2s ease, background .2s ease;
    }

    .form-control:focus {
        background: rgba(255, 255, 255, .08);
        border-color: var(--primary);
        box-shadow: 0 0 0 4px rgba(46, 168, 255, .14);
        color: #fff;
    }

    .form-control::placeholder {
        color: rgba(255, 255, 255, .4);
    }

    textarea.form-control {
        min-height: 116px;
        resize: vertical;
    }

    .form-status {
        font-size: 14px;
        color: var(--accent);
        min-height: 24px;
        margin: 8px 0 0;
    }

    .contact-form .btn-sa-primary {
        min-width: 168px;
    }

    .form-note {
        font-size: 13px;
        color: var(--text-muted);
        margin-top: 10px;
        margin-bottom: 0;
    }

    /* Footer */
    .footer {
        background: #03070e;
        border-top: 1px solid rgba(255, 255, 255, .08);
        padding: 76px 0 0;
        position: relative;
        z-index: 2;
    }

    .footer .footer-brand {
        display: flex;
        align-items: center;
        gap: 12px;
        margin-bottom: 18px;
    }

    .footer-intro {
        color: rgba(255, 255, 255, .52);
        font-size: 15px;
        line-height: 1.8;
        max-width: 340px;
        margin-bottom: 0;
    }

    .footer h5 {
        color: rgba(255, 255, 255, .64);
        font-size: 15px;
        font-weight: 600;
        letter-spacing: .1em;
        margin-bottom: 22px;
    }

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

    .footer-links li {
        margin-bottom: 12px;
    }

    .footer-links a {
        color: rgba(255, 255, 255, .62);
        font-size: 15px;
        transition: color .2s ease, padding-left .2s ease;
    }

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

    .footer-contact-list li {
        color: rgba(255, 255, 255, .5);
        font-size: 15px;
        margin-bottom: 14px;
        display: flex;
        align-items: flex-start;
        gap: 12px;
        line-height: 1.7;
    }

    .footer-contact-list i {
        color: var(--primary);
        margin-top: 4px;
    }

    .footer-bottom {
        margin-top: 58px;
        border-top: 1px solid rgba(255, 255, 255, .08);
        padding: 22px 0;
    }

    .footer-bottom-inner {
        display: flex;
        flex-wrap: wrap;
        align-items: center;
        justify-content: space-between;
        gap: 8px;
    }

    .footer-bottom p {
        color: rgba(255, 255, 255, .38);
        font-size: 14px;
        margin: 0;
    }

    .back-top {
        position: fixed;
        right: 26px;
        bottom: 26px;
        width: 50px;
        height: 50px;
        border-radius: 50%;
        border: 1px solid rgba(46, 168, 255, .35);
        background: rgba(6, 16, 31, .72);
        color: #fff;
        font-size: 17px;
        box-shadow: 0 14px 30px rgba(0, 0, 0, .3);
        opacity: 0;
        visibility: hidden;
        transform: translateY(14px);
        transition: opacity .25s ease, transform .25s ease, visibility .25s ease, background .2s ease;
        backdrop-filter: blur(8px);
        -webkit-backdrop-filter: blur(8px);
        z-index: 100;
    }

    .back-top.show {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }

    .back-top:hover {
        background: rgba(46, 168, 255, .3);
        color: white;
        border-color: rgba(46, 168, 255, .6);
    }

    /* Responsive */
    @media (max-width: 991.98px) {
        .sa-navbar .collapse.show,
        .sa-navbar .navbar-collapse.collapsing {
            background: rgba(4, 9, 16, .97);
            border: 1px solid rgba(255, 255, 255, .12);
            border-radius: 18px;
            padding: 12px 14px 18px;
            margin-top: 10px;
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
        }

        .sa-navbar .navbar-nav {
            width: 100%;
            margin: 0;
        }

        .sa-navbar .nav-link {
            width: 100%;
            justify-content: flex-start;
            border-radius: 12px;
            margin: 4px 0;
        }

        .nav-cta {
            width: 100%;
            margin-top: 14px;
            padding-top: 14px;
            border-top: 1px solid rgba(255, 255, 255, .08);
        }

        .nav-cta .btn-sa-primary {
            width: 100%;
        }

        .category-hero {
            min-height: 460px;
            padding: 150px 0 64px;
        }

        .category-hero h1 {
            font-size: 42px;
        }

        .section-block {
            padding: 66px 0 68px;
        }

        .section-title-lg {
            font-size: 34px;
        }

        .business-card-main {
            min-height: auto;
        }

        .transmedia-band {
            padding: 42px 32px;
        }

        .trust-panel {
            padding: 32px 28px;
        }

        .cta-panel {
            padding: 42px 30px;
        }

        .contact-form {
            padding-left: 0;
            padding-top: 24px;
        }
    }

    @media (max-width: 767.98px) {
        .category-hero {
            min-height: 420px;
            padding: 138px 0 52px;
            background-position: 32% center;
        }

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

        .category-hero .hero-lead {
            font-size: 16px;
        }

        .hero-cta {
            flex-direction: column;
            width: 100%;
        }

        .hero-cta .btn-sa-primary,
        .hero-cta .btn-sa-ghost {
            width: 100%;
        }

        .btn-block-mobile {
            display: flex;
            width: 100%;
        }

        .section-title-lg {
            font-size: 28px;
        }

        .section-block {
            padding: 54px 0 56px;
        }

        .transmedia-band {
            padding: 34px 24px;
            border-radius: 22px;
        }

        .transmedia-band h2 {
            font-size: 26px;
        }

        .process-stack {
            padding: 28px 24px;
            min-height: auto;
        }

        .trust-list {
            grid-template-columns: 1fr;
        }

        .cta-panel {
            padding: 34px 24px;
            border-radius: 24px;
        }

        .cta-panel h2,
        .cta-panel .desc-copy {
            max-width: 100%;
        }

        .next-panel {
            padding: 34px 28px;
        }

        .footer {
            padding-top: 58px;
        }

        .footer-bottom-inner {
            flex-direction: column;
        }
    }

    @media (max-width: 520px) {
        .category-hero h1 {
            font-size: 29px;
        }

        .sa-brand .sa-logo-text strong {
            font-size: 19px;
        }

        .media-frame img {
            aspect-ratio: 4 / 3;
        }

        .trust-item p {
            font-size: 14px;
        }
    }

    @keyframes heroUp {
        from {
            opacity: 0;
            transform: translateY(18px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }

    .category-hero-inner {
        animation: heroUp .62s ease both;
    }

/* roulang page: category2 */
:root {
            --sa-bg: #06101f;
            --sa-bg-2: #0a1d33;
            --sa-surface: rgba(255, 255, 255, 0.06);
            --sa-surface-2: rgba(255, 255, 255, 0.04);
            --sa-border: rgba(255, 255, 255, 0.16);
            --sa-primary: #2ea8ff;
            --sa-primary-deep: #0f5f9e;
            --sa-glow: rgba(46, 168, 255, 0.45);
            --sa-cyan: #4de3c0;
            --sa-amber: #f5b34d;
            --sa-text: rgba(255, 255, 255, 0.92);
            --sa-muted: rgba(255, 255, 255, 0.68);
            --sa-faint: rgba(255, 255, 255, 0.46);
            --sa-radius-lg: 18px;
            --sa-radius-md: 12px;
            --sa-shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
            --sa-shadow-hover: 0 28px 80px rgba(0, 0, 0, 0.45);
            --sa-font: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Hiragino Sans GB", sans-serif;
        }

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

        html {
            scroll-padding-top: 96px;
        }

        body {
            margin: 0;
            font-family: var(--sa-font);
            font-size: 16px;
            line-height: 1.8;
            color: var(--sa-text);
            background:
                radial-gradient(circle at 15% 10%, rgba(46, 168, 255, 0.12), transparent 26%),
                radial-gradient(circle at 88% 20%, rgba(32, 201, 151, 0.07), transparent 20%),
                linear-gradient(135deg, #06101f 0%, #0a1d33 45%, #06101f 100%);
            background-attachment: fixed;
            min-height: 100vh;
            overflow-x: hidden;
        }

        body::before {
            content: "";
            position: fixed;
            inset: 0;
            background-image: linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
            background-size: 42px 42px;
            pointer-events: none;
            z-index: 0;
        }

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

        a {
            color: var(--sa-primary);
            text-decoration: none;
            transition: all 0.25s ease;
        }

        a:hover {
            color: #7fc9ff;
        }

        .container {
            position: relative;
            z-index: 1;
            max-width: 1280px;
        }

        h1,
        h2,
        h3,
        h4,
        h5 {
            font-weight: 700;
            color: rgba(255, 255, 255, 0.96);
            letter-spacing: 0;
            line-height: 1.25;
        }

        .py-section {
            padding: 96px 0;
        }

        @media (max-width: 991.98px) {
            .py-section {
                padding: 72px 0;
            }
        }

        @media (max-width: 575.98px) {
            .py-section {
                padding: 56px 0;
            }
        }

        .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            letter-spacing: 0.06em;
            color: var(--sa-cyan);
            font-weight: 600;
            margin-bottom: 14px;
        }

        .eyebrow::before {
            content: "";
            width: 18px;
            height: 3px;
            border-radius: 999px;
            background: var(--sa-primary);
            box-shadow: 0 0 12px var(--sa-glow);
        }

        .section-title {
            font-size: clamp(26px, 3vw, 36px);
            line-height: 1.3;
            margin-bottom: 16px;
        }

        .section-lead {
            color: var(--sa-muted);
            font-size: 17px;
            max-width: 780px;
            margin-bottom: 32px;
        }

        .sa-navbar {
            min-height: 76px;
            background: rgba(6, 16, 31, 0.88);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            padding: 10px 0;
            z-index: 1030;
        }

        .sa-brand {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            line-height: 1.2;
            margin-right: 20px;
        }

        .sa-logo-mark {
            width: 42px;
            height: 42px;
            flex: 0 0 42px;
            color: var(--sa-primary);
            background: rgba(46, 168, 255, 0.1);
            border: 1px solid rgba(46, 168, 255, 0.28);
            border-radius: 12px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            box-shadow: inset 0 0 18px rgba(46, 168, 255, 0.08);
        }

        .sa-logo-mark svg {
            width: 26px;
            height: 26px;
        }

        .sa-logo-text {
            display: flex;
            flex-direction: column;
        }

        .sa-logo-text strong {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            letter-spacing: 0.02em;
        }

        .sa-logo-text small {
            font-size: 10px;
            letter-spacing: 0.28em;
            color: rgba(255, 255, 255, 0.48);
            margin-top: 1px;
        }

        .sa-navbar .navbar-toggler {
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 10px;
            color: rgba(255, 255, 255, 0.8);
            padding: 8px 10px;
        }

        .sa-navbar .navbar-toggler:focus {
            box-shadow: 0 0 0 4px rgba(46, 168, 255, 0.18);
        }

        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%28255,255,255,0.8%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e") !important;
        }

        .sa-navbar .navbar-nav {
            gap: 8px;
        }

        .sa-navbar .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.75);
            padding: 9px 16px !important;
            border-radius: 999px;
            border: 1px solid transparent;
            white-space: nowrap;
            transition: all 0.25s ease;
        }

        .sa-navbar .nav-link:hover {
            color: #ffffff;
            background: rgba(255, 255, 255, 0.06);
            border-color: rgba(255, 255, 255, 0.1);
        }

        .sa-navbar .nav-link.active {
            color: var(--sa-primary);
            background: rgba(46, 168, 255, 0.16);
            border-color: rgba(46, 168, 255, 0.35);
            box-shadow: 0 0 18px rgba(46, 168, 255, 0.12);
        }

        .btn-sa-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            color: #fff;
            background: linear-gradient(135deg, var(--sa-primary) 0%, #0a66b9 100%);
            border: 1px solid rgba(46, 168, 255, 0.55);
            border-radius: 999px;
            padding: 11px 24px;
            font-size: 15px;
            font-weight: 600;
            white-space: nowrap;
            box-shadow: 0 10px 28px rgba(46, 168, 255, 0.28), inset 0 1px 0 rgba(255, 255, 255, 0.2);
            transition: all 0.25s ease;
        }

        .btn-sa-primary:hover {
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 14px 36px rgba(46, 168, 255, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.24);
        }

        .btn-sa-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            color: rgba(255, 255, 255, 0.9);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.3);
            border-radius: 999px;
            padding: 11px 24px;
            font-size: 15px;
            font-weight: 500;
            white-space: nowrap;
            transition: all 0.25s ease;
        }

        .btn-sa-outline:hover {
            color: #ffffff;
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(255, 255, 255, 0.5);
            transform: translateY(-2px);
        }

        @media (max-width: 991.98px) {
            .sa-navbar {
                padding: 12px 0;
            }
            .navbar-collapse {
                background: rgba(6, 16, 31, 0.98);
                border: 1px solid rgba(255, 255, 255, 0.1);
                border-radius: 18px;
                padding: 18px;
                margin-top: 14px;
                box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
            }
            .sa-navbar .navbar-nav {
                gap: 4px;
            }
            .sa-navbar .nav-link {
                display: block;
                border-radius: 10px;
                padding: 12px 14px !important;
                white-space: normal;
            }
            .nav-cta {
                margin-top: 14px;
            }
            .nav-cta .btn-sa-primary {
                width: 100%;
                min-height: 48px;
            }
        }

        .cat-hero {
            position: relative;
            padding: 120px 0 72px;
            background:
                linear-gradient(180deg, rgba(6, 16, 31, 0.9) 0%, rgba(6, 16, 31, 0.72) 100%),
                url("/assets/images/backpic/back-2.webp") center top / cover no-repeat;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .cat-hero::after {
            content: "";
            position: absolute;
            inset: auto 0 0 0;
            height: 30%;
            background: linear-gradient(transparent, var(--sa-bg));
            pointer-events: none;
        }

        .cat-hero .container {
            z-index: 2;
        }

        .breadcrumb-sa {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            align-items: center;
            list-style: none;
            margin-bottom: 28px;
            padding: 0;
        }

        .breadcrumb-sa li {
            color: rgba(255, 255, 255, 0.5);
            font-size: 14px;
        }

        .breadcrumb-sa li + li::before {
            content: "/";
            margin: 0 7px;
            color: rgba(255, 255, 255, 0.25);
        }

        .breadcrumb-sa a {
            color: rgba(255, 255, 255, 0.6);
        }

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

        .cat-hero .hero-title {
            font-size: clamp(32px, 4.4vw, 56px);
            font-weight: 800;
            margin-bottom: 16px;
            letter-spacing: -0.01em;
        }

        .cat-hero .hero-sub {
            color: rgba(255, 255, 255, 0.7);
            font-size: clamp(15px, 1.4vw, 18px);
            line-height: 1.8;
            max-width: 760px;
            margin-bottom: 28px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            align-items: center;
        }

        .hero-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 34px;
        }

        .hero-tags span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: rgba(255, 255, 255, 0.62);
            font-size: 13px;
            border: 1px solid rgba(255, 255, 255, 0.14);
            background: rgba(255, 255, 255, 0.045);
            padding: 6px 13px;
            border-radius: 999px;
        }

        .hero-tags i {
            color: var(--sa-cyan);
            font-size: 12px;
        }

        @media (max-width: 767.98px) {
            .cat-hero {
                padding: 96px 0 54px;
            }
            .hero-actions .btn-sa-primary,
            .hero-actions .btn-sa-outline {
                width: 100%;
            }
        }

        .category-main {
            padding: 80px 0 48px;
        }

        .article-left {
            padding-right: 18px;
        }

        .article-body {
            color: rgba(255, 255, 255, 0.78);
            font-size: 16px;
            line-height: 1.95;
        }

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

        .article-body h2 {
            font-size: clamp(24px, 2.6vw, 32px);
            margin: 56px 0 20px;
            padding-left: 14px;
            border-left: 4px solid var(--sa-primary);
        }

        .article-body h3 {
            font-size: 20px;
            margin: 30px 0 14px;
        }

        .content-image {
            border-radius: var(--sa-radius-lg);
            overflow: hidden;
            margin: 26px 0 10px;
            border: 1px solid rgba(255, 255, 255, 0.14);
            box-shadow: var(--sa-shadow);
        }

        .content-image img {
            width: 100%;
            display: block;
            object-fit: cover;
        }

        .image-caption {
            color: var(--sa-faint);
            font-size: 13px;
            text-align: center;
            padding: 12px 10px;
            background: rgba(255, 255, 255, 0.035);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }

        .feature-list {
            list-style: none;
            padding: 0;
            margin: 0 0 30px;
        }

        .feature-list li {
            position: relative;
            padding: 16px 18px 16px 52px;
            background: rgba(255, 255, 255, 0.045);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 14px;
            margin-bottom: 12px;
            transition: all 0.25s ease;
        }

        .feature-list li:hover {
            background: rgba(255, 255, 255, 0.065);
            border-color: rgba(46, 168, 255, 0.35);
            transform: translateX(4px);
        }

        .feature-list li::before {
            content: "";
            position: absolute;
            left: 20px;
            top: 24px;
            width: 9px;
            height: 9px;
            border-radius: 999px;
            background: var(--sa-cyan);
            box-shadow: 0 0 0 4px rgba(77, 227, 192, 0.15);
        }

        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
            margin: 24px 0 36px;
        }

        .scenario-card {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 16px;
            padding: 22px;
        }

        .scenario-card h4 {
            font-size: 18px;
            margin-bottom: 10px;
        }

        .scenario-card p {
            color: var(--sa-muted);
            font-size: 14px;
            line-height: 1.75;
            margin: 0;
        }

        .scenario-card .scenario-icon {
            width: 42px;
            height: 42px;
            border-radius: 11px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(46, 168, 255, 0.16);
            border: 1px solid rgba(46, 168, 255, 0.22);
            margin-bottom: 16px;
            color: var(--sa-primary);
            font-size: 18px;
        }

        @media (max-width: 767.98px) {
            .scenario-grid {
                grid-template-columns: 1fr;
            }
        }

        .process-steps {
            list-style: none;
            padding: 0;
            margin: 26px 0 10px;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 14px;
        }

        .process-step {
            background: rgba(255, 255, 255, 0.045);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 16px;
            padding: 20px 16px;
        }

        .process-step .step-no {
            font-size: 13px;
            color: var(--sa-amber);
            font-weight: 700;
            letter-spacing: 0.08em;
            display: block;
            margin-bottom: 8px;
        }

        .process-step .step-title {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 6px;
        }

        .process-step .step-desc {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.52);
            line-height: 1.7;
            margin: 0;
        }

        @media (max-width: 991.98px) {
            .process-steps {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 575.98px) {
            .process-steps {
                grid-template-columns: 1fr;
            }
        }

        .side-toc {
            position: sticky;
            top: 104px;
            padding: 28px 22px;
            background: rgba(255, 255, 255, 0.055);
            border: 1px solid rgba(255, 255, 255, 0.14);
            border-radius: 18px;
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            margin-bottom: 24px;
        }

        .side-toc h3 {
            font-size: 16px;
            font-weight: 700;
            padding-bottom: 12px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .side-toc h3 i {
            color: var(--sa-primary);
        }

        .side-toc ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .side-toc li a {
            display: block;
            padding: 10px 12px;
            border-radius: 10px;
            color: rgba(255, 255, 255, 0.66);
            font-size: 14px;
            line-height: 1.5;
            transition: all 0.2s ease;
        }

        .side-toc li a:hover,
        .side-toc li a.active {
            background: rgba(46, 168, 255, 0.15);
            color: var(--sa-primary);
            padding-left: 18px;
        }

        .side-contact-card {
            position: sticky;
            top: auto;
            margin-top: 24px;
            padding: 24px;
            background: linear-gradient(150deg, rgba(46, 168, 255, 0.14), rgba(255, 255, 255, 0.05));
            border: 1px solid rgba(46, 168, 255, 0.25);
            border-radius: 18px;
        }

        .side-contact-card h3 {
            font-size: 18px;
            margin-bottom: 8px;
        }

        .side-contact-card p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
            line-height: 1.8;
        }

        @media (max-width: 991.98px) {
            .side-toc {
                position: relative;
                top: auto;
                margin-top: 12px;
            }
        }

        .case-band {
            padding: 88px 0 40px;
            background: rgba(3, 10, 20, 0.3);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }

        .case-main {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.13);
            border-radius: 18px;
            overflow: hidden;
            height: 100%;
            display: flex;
            flex-direction: column;
            transition: all 0.3s ease;
        }

        .case-main:hover {
            background: rgba(255, 255, 255, 0.07);
            border-color: rgba(46, 168, 255, 0.4);
            transform: translateY(-4px);
            box-shadow: var(--sa-shadow-hover);
        }

        .case-main .case-image {
            position: relative;
            min-height: 280px;
            background-size: cover;
            background-position: center;
        }

        .case-main .case-image::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(6, 16, 31, 0.22), rgba(6, 16, 31, 0.76));
        }

        .case-badge {
            position: absolute;
            top: 18px;
            left: 18px;
            z-index: 2;
            padding: 7px 14px;
            background: rgba(6, 16, 31, 0.68);
            border: 1px solid rgba(255, 255, 255, 0.4);
            border-radius: 999px;
            font-size: 13px;
            color: #fff;
            backdrop-filter: blur(8px);
        }

        .case-main .case-body {
            padding: 26px;
            flex: 1;
        }

        .case-main h3 {
            font-size: 22px;
            margin-bottom: 10px;
        }

        .case-main p {
            color: rgba(255, 255, 255, 0.68);
            font-size: 15px;
            line-height: 1.85;
            margin: 0;
        }

        .case-stack {
            display: flex;
            flex-direction: column;
            gap: 18px;
            height: 100%;
        }

        .case-slim {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 18px;
            padding: 22px 22px;
            flex: 1;
            display: flex;
            align-items: flex-start;
            gap: 16px;
            transition: all 0.25s ease;
        }

        .case-slim:hover {
            background: rgba(255, 255, 255, 0.07);
            border-color: rgba(46, 168, 255, 0.4);
            transform: translateY(-3px);
        }

        .case-slim .case-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(77, 227, 192, 0.14);
            color: var(--sa-cyan);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            border: 1px solid rgba(77, 227, 192, 0.2);
            flex: 0 0 48px;
        }

        .case-slim h4 {
            font-size: 17px;
            margin-bottom: 6px;
        }

        .case-slim p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.58);
            line-height: 1.75;
            margin: 0;
        }

        .faq-section {
            padding: 88px 0;
        }

        .sa-accordion .accordion-item {
            background: rgba(255, 255, 255, 0.045);
            border: 1px solid rgba(255, 255, 255, 0.11);
            border-radius: 16px !important;
            margin-bottom: 14px;
            overflow: hidden;
        }

        .sa-accordion .accordion-button {
            background: transparent;
            color: rgba(255, 255, 255, 0.92);
            font-size: 17px;
            font-weight: 600;
            padding: 20px 24px;
            box-shadow: none;
            border: 0;
            border-radius: 0 !important;
            line-height: 1.5;
        }

        .sa-accordion .accordion-button:not(.collapsed) {
            color: var(--sa-primary);
            background: rgba(46, 168, 255, 0.08);
        }

        .sa-accordion .accordion-button:focus {
            box-shadow: none;
            border: 0;
        }

        .sa-accordion .accordion-button::after {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%232ea8ff'%3e%3cpath fill-rule='evenodd' d='M8 4a.75.75 0 0 1 .75.75v2.5h2.5a.75.75 0 0 1 0 1.5h-2.5v2.5a.75.75 0 0 1-1.5 0v-2.5h-2.5a.75.75 0 0 1 0-1.5h2.5v-2.5A.75.75 0 0 1 8 4Z'/%3e%3c/svg%3e");
        }

        .sa-accordion .accordion-button:not(.collapsed)::after {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%232ea8ff'%3e%3cpath fill-rule='evenodd' d='M4 8a.75.75 0 0 1 .75-.75h6.5a.75.75 0 0 1 0 1.5h-6.5A.75.75 0 0 1 4 8Z'/%3e%3c/svg%3e");
        }

        .sa-accordion .accordion-body {
            padding: 0 24px 24px;
            color: rgba(255, 255, 255, 0.65);
            background: rgba(255, 255, 255, 0.025);
            line-height: 1.85;
            font-size: 15px;
        }

        .cta-section {
            padding: 80px 0;
        }

        .cta-panel {
            position: relative;
            border-radius: 24px;
            padding: 60px clamp(24px, 5vw, 80px);
            background:
                linear-gradient(120deg, rgba(6, 16, 31, 0.86), rgba(10, 29, 51, 0.76)),
                url("/assets/images/backpic/back-3.png") center / cover no-repeat;
            border: 1px solid rgba(255, 255, 255, 0.14);
            overflow: hidden;
            box-shadow: 0 30px 80px rgba(0, 0, 0, 0.45);
        }

        .cta-panel::before {
            content: "";
            position: absolute;
            top: -80px;
            right: -60px;
            width: 260px;
            height: 260px;
            border-radius: 999px;
            background: var(--sa-glow);
            filter: blur(70px);
            opacity: 0.4;
            z-index: 0;
        }

        .cta-panel .container {
            z-index: 1;
        }

        .cta-title {
            font-size: clamp(25px, 3.4vw, 38px);
            line-height: 1.3;
            margin-bottom: 12px;
        }

        .cta-text {
            color: rgba(255, 255, 255, 0.72);
            max-width: 720px;
            margin-bottom: 28px;
            font-size: 16px;
            line-height: 1.9;
        }

        .contact-form {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            max-width: 660px;
            align-items: stretch;
        }

        .contact-form .field {
            flex: 1 1 320px;
            padding: 0 10px 0 22px;
            height: 56px;
            border-radius: 999px;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.26);
            color: #fff;
            font-size: 15px;
        }

        .contact-form .field::placeholder {
            color: rgba(255, 255, 255, 0.42);
        }

        .contact-form .field:focus {
            outline: none;
            border-color: var(--sa-primary);
            box-shadow: 0 0 0 4px rgba(46, 168, 255, 0.15);
            background: rgba(255, 255, 255, 0.12);
        }

        .contact-form .submit-btn {
            border: 0;
            border-radius: 999px;
            padding: 0 26px;
            height: 56px;
            min-width: 140px;
            font-weight: 600;
            color: #fff;
            background: linear-gradient(135deg, var(--sa-primary), #0a66b9);
            box-shadow: 0 12px 30px rgba(46, 168, 255, 0.3);
            transition: all 0.25s ease;
        }

        .contact-form .submit-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 16px 40px rgba(46, 168, 255, 0.42);
        }

        .form-note {
            margin-top: 16px;
            color: rgba(255, 255, 255, 0.42);
            font-size: 13px;
        }

        @media (max-width: 575.98px) {
            .contact-form {
                flex-direction: column;
            }
            .contact-form .field,
            .contact-form .submit-btn {
                width: 100%;
                min-width: 0;
            }
        }

        .next-cat-section {
            padding: 0 0 88px;
        }

        .next-cat-card {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            flex-wrap: wrap;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.14);
            border-radius: 18px;
            padding: 30px 34px;
            transition: all 0.25s ease;
        }

        .next-cat-card:hover {
            background: rgba(46, 168, 255, 0.1);
            border-color: rgba(46, 168, 255, 0.35);
            transform: translateY(-3px);
        }

        .next-cat-card span {
            color: var(--sa-muted);
            font-size: 15px;
            display: block;
        }

        .next-cat-card strong {
            color: #fff;
            font-size: 22px;
            margin-top: 4px;
            display: block;
        }

        .next-cat-card .btn-sa-primary {
            min-width: 150px;
        }

        .footer {
            background: #040a12;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 72px 0 0;
            position: relative;
            z-index: 2;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 18px;
        }

        .footer-intro {
            color: rgba(255, 255, 255, 0.52);
            font-size: 14px;
            line-height: 1.85;
            max-width: 380px;
        }

        .footer .logo-mark {
            color: var(--sa-primary);
        }

        .footer h5 {
            font-size: 16px;
            margin-bottom: 18px;
            color: rgba(255, 255, 255, 0.9);
            font-weight: 600;
        }

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

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

        .footer-links a {
            color: rgba(255, 255, 255, 0.5);
            font-size: 14px;
            line-height: 1.6;
        }

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

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

        .footer-contact-list li {
            color: rgba(255, 255, 255, 0.5);
            font-size: 14px;
            margin-bottom: 12px;
            display: flex;
            gap: 8px;
            line-height: 1.7;
            align-items: flex-start;
        }

        .footer-contact-list i {
            margin-top: 4px;
            color: var(--sa-primary);
            font-size: 14px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.07);
            margin-top: 52px;
            padding: 20px 0;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.34);
            display: flex;
            justify-content: space-between;
            gap: 10px;
            flex-wrap: wrap;
        }

        .to-top {
            position: fixed;
            right: 22px;
            bottom: 26px;
            z-index: 99;
            width: 46px;
            height: 46px;
            border-radius: 999px;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.24);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.7);
            backdrop-filter: blur(10px);
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
            transition: all 0.25s ease;
        }

        .to-top:hover {
            color: #fff;
            background: rgba(46, 168, 255, 0.22);
            border-color: rgba(46, 168, 255, 0.6);
        }

/* roulang page: category3 */
:root {
            --bg-deep: #06101F;
            --bg-body: #081627;
            --bg-lighter: rgba(255,255,255,0.045);
            --primary: #2EA8FF;
            --primary-deep: #0F5F9E;
            --primary-glow: rgba(46,168,255,0.45);
            --mint: #4DE3C0;
            --amber: #F5B34D;
            --text-main: rgba(255,255,255,0.92);
            --text-sub: rgba(255,255,255,0.68);
            --text-weak: rgba(255,255,255,0.46);
            --glass-bg: rgba(255,255,255,0.06);
            --glass-border: rgba(255,255,255,0.16);
            --radius-lg: 24px;
            --radius-md: 18px;
            --radius-sm: 12px;
            --shadow-card: 0 20px 60px rgba(0,0,0,0.35);
            --shadow-hover: 0 30px 80px rgba(0,0,0,0.48);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Hiragino Sans GB", sans-serif;
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-main);
            background:
                radial-gradient(circle at 15% 0%, rgba(46,168,255,0.10), transparent 32%),
                radial-gradient(circle at 90% 20%, rgba(77,227,192,0.05), transparent 28%),
                linear-gradient(160deg, #06101F 0%, #081627 48%, #0A1D33 100%);
            background-attachment: fixed;
            overflow-x: hidden;
        }

        body::before {
            content: "";
            position: fixed;
            inset: 0;
            background-image:
                linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
            background-size: 56px 56px;
            pointer-events: none;
            z-index: 0;
        }

        img {
            max-width: 100%;
            vertical-align: middle;
        }

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

        a:hover {
            color: #7ecbff;
        }

        h1, h2, h3, h4, h5, h6 {
            color: rgba(255,255,255,0.95);
            line-height: 1.35;
            font-weight: 600;
        }

        .container {
            max-width: 1280px;
        }

        .section-space {
            padding: 96px 0;
        }

        .section-subhead {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            letter-spacing: 0.08em;
            color: var(--mint);
            text-transform: none;
            font-weight: 500;
            margin-bottom: 16px;
        }

        .section-subhead::before {
            content: "";
            width: 22px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            display: inline-block;
            box-shadow: 0 0 12px var(--primary-glow);
        }

        .section-title {
            font-size: clamp(28px, 3vw, 36px);
            margin-bottom: 18px;
            font-weight: 700;
        }

        /* Navbar */
        .sa-navbar {
            min-height: 76px;
            background: rgba(6, 16, 31, 0.85);
            -webkit-backdrop-filter: blur(16px);
            backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255,255,255,0.08);
            padding: 10px 0;
            z-index: 1080;
        }

        .sa-brand {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            color: #fff;
            text-decoration: none;
            margin-right: 28px;
        }

        .sa-brand:hover {
            color: #fff;
        }

        .sa-logo-mark {
            display: inline-flex;
            width: 40px;
            height: 40px;
            border-radius: 45%;
            background: rgba(46,168,255,0.18);
            border: 1px solid rgba(46,168,255,0.34);
            align-items: center;
            justify-content: center;
            color: var(--primary);
            box-shadow: 0 0 24px rgba(46,168,255,0.22);
        }

        .sa-logo-mark svg {
            width: 26px;
            height: 26px;
        }

        .sa-logo-text {
            display: flex;
            flex-direction: column;
            line-height: 1.25;
        }

        .sa-logo-text strong {
            font-size: 20px;
            font-weight: 700;
            letter-spacing: 0.05em;
            color: #fff;
        }

        .sa-logo-text small {
            font-size: 10px;
            letter-spacing: 0.18em;
            color: rgba(255,255,255,0.48);
            font-weight: 500;
        }

        .navbar-collapse {
            flex-grow: 1;
        }

        .navbar-nav {
            gap: 10px;
            align-items: center;
        }

        .navbar-nav .nav-link {
            color: rgba(255,255,255,0.7);
            font-size: 16px;
            font-weight: 500;
            border-radius: 999px;
            padding: 10px 18px;
            transition: all .25s ease;
        }

        .navbar-nav .nav-link:hover {
            color: #fff;
            background: rgba(255,255,255,0.06);
            box-shadow: inset 0 0 0 1px rgba(255,255,255,0.10);
        }

        .navbar-nav .nav-link.active {
            color: var(--primary);
            background: rgba(46,168,255,0.18);
            box-shadow: inset 0 0 0 1px rgba(46,168,255,0.30);
        }

        .nav-cta {
            margin-left: 18px;
        }

        .btn-sa-primary,
        .btn-sa-ghost {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            min-height: 48px;
            padding: 0 28px;
            border-radius: 999px;
            font-weight: 600;
            font-size: 15px;
            line-height: 1;
            transition: all .28s ease;
            border: 0;
        }

        .btn-sa-primary {
            background: linear-gradient(135deg, var(--primary) 0%, #1668c0 100%);
            color: #fff;
            box-shadow: 0 8px 28px rgba(46,168,255,0.38), inset 0 1px 0 rgba(255,255,255,0.30);
        }

        .btn-sa-primary:hover {
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 14px 34px rgba(46,168,255,0.55), inset 0 1px 0 rgba(255,255,255,0.3);
        }

        .btn-sa-primary:active {
            transform: translateY(0);
            box-shadow: 0 6px 18px rgba(46,168,255,0.35);
        }

        .btn-sa-ghost {
            background: rgba(255,255,255,0.08);
            color: rgba(255,255,255,0.86);
            border: 1px solid rgba(255,255,255,0.26);
            -webkit-backdrop-filter: blur(10px);
            backdrop-filter: blur(10px);
            box-shadow: 0 0 0 1px rgba(255,255,255,0.05) inset;
        }

        .btn-sa-ghost:hover {
            border-color: rgba(46,168,255,0.6);
            color: #fff;
            background: rgba(46,168,255,0.12);
            transform: translateY(-2px);
        }

        .navbar-toggler {
            border: 1px solid rgba(255,255,255,0.16);
            border-radius: 10px;
            color: rgba(255,255,255,0.8);
            padding: 8px 12px;
            background: rgba(255,255,255,0.04);
        }

        .navbar-toggler:focus {
            box-shadow: 0 0 0 4px rgba(46,168,255,0.18);
        }

        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(255,255,255,0.82)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        /* Category Hero */
        .cat-hero {
            position: relative;
            min-height: 400px;
            display: flex;
            align-items: center;
            background: linear-gradient(100deg, rgba(6,16,31,0.95) 0%, rgba(6,16,31,0.72) 45%, rgba(46,168,255,0.16) 100%),
                url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            padding: 150px 0 80px;
            isolation: isolate;
        }

        .cat-hero::after {
            content: "";
            position: absolute;
            width: 340px;
            height: 340px;
            right: -100px;
            bottom: -120px;
            background: radial-gradient(circle, rgba(46,168,255,0.22), transparent 68%);
            border-radius: 50%;
            z-index: -1;
        }

        .breadcrumb-sa {
            display: flex;
            gap: 12px;
            align-items: center;
            margin-bottom: 18px;
            font-size: 14px;
            color: var(--text-weak);
            flex-wrap: wrap;
        }

        .breadcrumb-sa a {
            color: var(--text-sub);
        }

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

        .breadcrumb-sa span {
            color: rgba(255,255,255,0.38);
        }

        .cat-hero-inner {
            max-width: 820px;
        }

        .cat-hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: rgba(255,255,255,0.08);
            border-radius: 999px;
            padding: 8px 18px;
            font-size: 14px;
            color: var(--mint);
            border: 1px solid rgba(77,227,192,0.24);
            margin-bottom: 22px;
            letter-spacing: 0.04em;
        }

        .cat-hero-badge i {
            font-size: 14px;
        }

        .cat-hero h1 {
            font-size: clamp(32px, 4vw, 48px);
            font-weight: 800;
            margin-bottom: 18px;
            letter-spacing: 0.02em;
        }

        .cat-hero p.lead {
            color: var(--text-sub);
            font-size: 18px;
            max-width: 640px;
            margin-bottom: 28px;
            line-height: 1.8;
        }

        .cat-hero .btn-group-sa {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        /* Large feature / showcase block */
        .showcase-block {
            background: rgba(255,255,255,0.04);
            border: 1px solid rgba(255,255,255,0.10);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            display: flex;
            align-items: stretch;
            flex-wrap: wrap;
        }

        .showcase-media {
            position: relative;
            min-height: 360px;
            flex: 1 1 52%;
        }

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

        .showcase-media::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, transparent 55%, rgba(6,16,31,0.45));
            pointer-events: none;
        }

        .showcase-body {
            flex: 1 1 38%;
            padding: clamp(30px, 4vw, 58px);
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .showcase-body .tag-mint {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--mint);
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 16px;
        }

        .showcase-body h2 {
            font-size: clamp(24px, 2.4vw, 31px);
            margin-bottom: 18px;
        }

        .showcase-body p {
            color: var(--text-sub);
            font-size: 16px;
            line-height: 1.85;
            margin-bottom: 22px;
        }

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

        .showcase-list li {
            position: relative;
            padding-left: 28px;
            margin-bottom: 10px;
            color: rgba(255,255,255,0.8);
            font-size: 15px;
            line-height: 1.7;
        }

        .showcase-list li::before {
            content: "\f058";
            font-family: "Font Awesome 6 Free";
            font-weight: 400;
            position: absolute;
            left: 0;
            top: 1px;
            color: var(--mint);
            font-size: 15px;
        }

        /* Double desc sections */
        .desc-block-item {
            position: relative;
            background: rgba(255,255,255,0.05);
            border: 1px solid rgba(255,255,255,0.12);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border-radius: var(--radius-md);
            padding: 38px 34px;
            height: 100%;
            transition: transform .3s ease, border-color .3s ease, box-shadow .3s ease;
        }

        .desc-block-item:hover {
            transform: translateY(-6px);
            border-color: rgba(46,168,255,0.55);
            box-shadow: var(--shadow-hover);
        }

        .desc-block-item .icon-circle {
            width: 54px;
            height: 54px;
            border-radius: 16px;
            background: rgba(46,168,255,0.16);
            border: 1px solid rgba(46,168,255,0.28);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            margin-bottom: 22px;
            box-shadow: 0 0 18px rgba(46,168,255,0.16);
        }

        .desc-block-item h3 {
            font-size: 21px;
            margin-bottom: 14px;
        }

        .desc-block-item p {
            color: var(--text-sub);
            font-size: 15px;
            margin-bottom: 0;
            line-height: 1.8;
        }

        /* Compare two-column image-text */
        .compare-block {
            display: flex;
            align-items: center;
            gap: 48px;
            flex-wrap: wrap;
        }

        .compare-media {
            flex: 1 1 46%;
            border-radius: var(--radius-lg);
            overflow: hidden;
            min-height: 300px;
            box-shadow: var(--shadow-card);
        }

        .compare-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 300px;
        }

        .compare-content {
            flex: 1 1 46%;
        }

        .compare-list {
            list-style: none;
            padding: 0;
            margin: 0 0 24px;
        }

        .compare-list li {
            border-left: 2px solid rgba(46,168,255,0.6);
            background: rgba(255,255,255,0.03);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            padding: 14px 18px;
            margin-bottom: 14px;
            color: rgba(255,255,255,0.80);
            font-size: 15px;
            transition: background .3s ease, border-color .3s ease;
        }

        .compare-list li:hover {
            background: rgba(46,168,255,0.08);
            border-color: var(--primary);
        }

        /* Process steps */
        .steps-card {
            position: relative;
            background: var(--glass-bg);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-md);
            padding: 32px 26px;
            height: 100%;
            transition: all .3s ease;
        }

        .steps-card:hover {
            border-color: rgba(46,168,255,0.55);
            box-shadow: var(--shadow-hover);
            transform: translateY(-5px);
        }

        .steps-num {
            font-family: "DIN Alternate", "Bebas Neue", Arial, sans-serif;
            font-size: 42px;
            font-weight: 700;
            line-height: 1;
            color: rgba(46,168,255,0.5);
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .steps-num::after {
            content: "";
            flex: 1;
            height: 1px;
            background: linear-gradient(90deg, rgba(46,168,255,0.35), transparent);
        }

        .steps-card h3 {
            font-size: 18px;
            margin-bottom: 12px;
        }

        .steps-card p {
            color: var(--text-sub);
            font-size: 14.5px;
            line-height: 1.75;
            margin-bottom: 0;
        }

        /* FAQ */
        .faq-section {
            background: linear-gradient(180deg, rgba(6,16,31,0.8), rgba(8,22,39,0.9));
            border-top: 1px solid rgba(255,255,255,0.06);
            border-bottom: 1px solid rgba(255,255,255,0.06);
        }

        .faq-item {
            background: rgba(255,255,255,0.04);
            border: 1px solid rgba(255,255,255,0.10);
            border-radius: var(--radius-md);
            padding: 0;
            margin-bottom: 18px;
            overflow: hidden;
            transition: border-color .3s ease;
        }

        .faq-item:hover {
            border-color: rgba(46,168,255,0.35);
        }

        .faq-item .accordion-button {
            background: transparent;
            color: rgba(255,255,255,0.9);
            box-shadow: none;
            font-size: 18px;
            font-weight: 600;
            padding: 24px 28px;
            border-radius: 0;
        }

        .faq-item .accordion-button:not(.collapsed)::after {
            background-image: none;
            content: "\f068";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            color: var(--primary);
            transform: rotate(0deg);
        }

        .faq-item .accordion-button::after {
            background-image: none;
            content: "\f067";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            color: rgba(255,255,255,0.6);
            font-size: 16px;
            transition: all .3s ease;
        }

        .faq-item .accordion-button:hover {
            color: #fff;
        }

        .faq-item .accordion-button:focus {
            box-shadow: none;
        }

        .accordion-body {
            color: var(--text-sub);
            padding: 0 28px 26px;
            font-size: 15.5px;
            line-height: 1.85;
            background: rgba(255,255,255,0.025);
        }

        /* CTA band */
        .cta-panel {
            border-radius: var(--radius-lg);
            padding: 64px 50px;
            background: linear-gradient(120deg, rgba(6,16,31,0.92) 20%, rgba(20,68,112,0.75) 100%),
                url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            border: 1px solid rgba(46,168,255,0.35);
            box-shadow: 0 24px 80px rgba(0,0,0,0.45), 0 0 40px rgba(46,168,255,0.08) inset;
            position: relative;
            overflow: hidden;
        }

        .cta-panel::before {
            content: "";
            position: absolute;
            top: -40%;
            right: -10%;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(46,168,255,0.22), transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-panel h2 {
            font-size: clamp(25px, 2.6vw, 34px);
            margin-bottom: 14px;
        }

        .cta-panel p {
            color: var(--text-sub);
            margin-bottom: 28px;
            max-width: 620px;
            font-size: 16px;
        }

        .cta-form {
            display: flex;
            gap: 12px;
            max-width: 560px;
            flex-wrap: wrap;
        }

        .cta-form .form-control {
            background: rgba(255,255,255,0.06);
            border: 1px solid rgba(255,255,255,0.18);
            border-radius: 999px;
            padding: 14px 22px;
            color: #fff;
            height: 54px;
            flex: 1 1 280px;
            transition: all .3s ease;
        }

        .cta-form .form-control::placeholder {
            color: rgba(255,255,255,0.40);
        }

        .cta-form .form-control:focus {
            background: rgba(255,255,255,0.10);
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(46,168,255,0.15);
            color: #fff;
        }

        .cta-form .btn-sa-primary {
            flex: 0 0 auto;
            height: 54px;
            border-radius: 999px;
        }

        .cta-note {
            color: var(--text-weak);
            font-size: 13px;
            margin-top: 14px;
        }

        .next-cat {
            border-radius: var(--radius-lg);
        }

        .next-cat a {
            display: flex;
            align-items: center;
            justify-content: space-between;
            background: rgba(255,255,255,0.05);
            border: 1px solid rgba(255,255,255,0.12);
            border-radius: var(--radius-lg);
            padding: 34px 40px;
            transition: all .3s ease;
            color: rgba(255,255,255,0.85);
        }

        .next-cat a:hover {
            background: rgba(46,168,255,0.08);
            border-color: rgba(46,168,255,0.55);
            color: #fff;
        }

        .next-cat .small-label {
            display: block;
            font-size: 14px;
            color: var(--text-weak);
            margin-bottom: 6px;
        }

        .next-cat strong {
            font-size: 22px;
            font-weight: 700;
        }

        .next-cat i {
            color: var(--primary);
            font-size: 24px;
            transition: transform .3s;
        }

        .next-cat a:hover i {
            transform: translateX(8px);
        }

        /* Footer */
        .footer {
            background: #040A12;
            border-top: 1px solid rgba(255,255,255,0.06);
            padding: 72px 0 24px;
            margin-top: 0;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 18px;
        }

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

        .footer-brand .sa-logo-text small {
            color: rgba(255,255,255,0.38);
        }

        .footer-intro {
            font-size: 14.5px;
            color: var(--text-sub);
            max-width: 400px;
            line-height: 1.85;
            margin-bottom: 0;
        }

        .footer h5 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 18px;
            color: rgba(255,255,255,0.9);
        }

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

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

        .footer-links a {
            color: rgba(255,255,255,0.58);
            font-size: 14.5px;
            line-height: 1.6;
            transition: all .25s;
        }

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

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

        .footer-contact-list li {
            color: rgba(255,255,255,0.58);
            font-size: 14.5px;
            margin-bottom: 14px;
            display: flex;
            gap: 12px;
            align-items: flex-start;
        }

        .footer-contact-list li i {
            color: var(--primary);
            width: 18px;
            text-align: center;
            margin-top: 5px;
            flex-shrink: 0;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.07);
            padding-top: 24px;
            margin-top: 48px;
            color: var(--text-weak);
            font-size: 13px;
            display: flex;
            justify-content: space-between;
            gap: 12px;
            flex-wrap: wrap;
        }

        /* Back to top */
        .back-top {
            position: fixed;
            bottom: 28px;
            right: 26px;
            width: 46px;
            height: 46px;
            border-radius: 50%;
            background: rgba(255,255,255,0.08);
            border: 1px solid rgba(255,255,255,0.18);
            color: rgba(255,255,255,0.8);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            z-index: 999;
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            transition: all .3s ease;
        }

        .back-top:hover {
            background: rgba(46,168,255,0.24);
            border-color: rgba(46,168,255,0.6);
            color: #fff;
            transform: translateY(-3px);
        }

        @media (max-width: 991.98px) {
            .navbar-collapse {
                background: rgba(6,16,31,0.96);
                border-radius: var(--radius-md);
                padding: 18px;
                margin-top: 12px;
                border: 1px solid rgba(255,255,255,0.10);
                box-shadow: 0 24px 60px rgba(0,0,0,0.5);
            }

            .navbar-nav {
                gap: 6px;
                text-align: center;
            }

            .navbar-nav .nav-link {
                display: inline-block;
                width: 100%;
                text-align: center;
                padding: 12px 16px;
            }

            .nav-cta {
                margin-left: 0;
                margin-top: 16px;
                text-align: center;
                width: 100%;
            }

            .nav-cta .btn-sa-primary {
                width: 100%;
            }

            .section-space {
                padding: 60px 0;
            }

            .showcase-media {
                min-height: 260px;
            }
        }

        @media (max-width: 767.98px) {
            .cat-hero {
                min-height: 340px;
                padding: 130px 0 60px;
            }

            .cat-hero h1 {
                font-size: 30px;
            }

            .cat-hero p.lead {
                font-size: 16px;
            }

            .compare-block {
                gap: 24px;
            }

            .cta-panel {
                padding: 42px 24px;
            }

            .footer {
                padding-top: 48px;
            }

            .footer-bottom {
                justify-content: center;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }

            .desc-block-item {
                padding: 26px 22px;
            }

            .compare-list li {
                font-size: 14px;
                padding: 12px 14px;
            }

            .next-cat a {
                padding: 24px 20px;
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }

            .next-cat i {
                transform: rotate(90deg);
            }

            .next-cat a:hover i {
                transform: rotate(90deg) translateY(6px);
            }

            .btn-sa-ghost,
            .btn-sa-primary {
                width: 100%;
            }

            .cat-hero .btn-group-sa {
                flex-direction: column;
            }
        }

/* roulang page: category4 */
:root {
            --primary: #2EA8FF;
            --primary-deep: #0F5F9E;
            --primary-glow: rgba(46, 168, 255, 0.25);
            --aqua: #4DE3C0;
            --amber: #F5B34D;
            --bg-deep: #040A12;
            --bg-0: #06101F;
            --bg-1: #0A1D33;
            --bg-card: rgba(255, 255, 255, 0.06);
            --border-glass: rgba(255, 255, 255, 0.15);
            --white-1: rgba(255, 255, 255, 0.92);
            --white-2: rgba(255, 255, 255, 0.68);
            --white-3: rgba(255, 255, 255, 0.46);
            --radius: 18px;
            --radius-lg: 26px;
            --shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
            --shadow-hover: 0 28px 80px rgba(0, 0, 0, 0.45);
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Hiragino Sans GB", sans-serif;
            --nav-height: 76px;
        }

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

        html {
            scroll-behavior: smooth;
            scroll-padding-top: calc(var(--nav-height) + 20px);
        }

        body {
            margin: 0;
            min-height: 100vh;
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.8;
            color: var(--white-1);
            background:
                linear-gradient(180deg, rgba(10, 29, 51, 0.55) 0%, rgba(6, 16, 31, 0.96) 38%, rgba(6, 16, 31, 1) 100%),
                var(--bg-0);
            background-repeat: no-repeat;
            -webkit-font-smoothing: antialiased;
        }

        body::before {
            content: "";
            position: fixed;
            inset: 0;
            z-index: -1;
            pointer-events: none;
            background-image:
                linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
            background-size: 46px 46px;
        }

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

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

        a:hover {
            color: #7cc8ff;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-family: var(--font-sans);
            font-weight: 700;
            line-height: 1.35;
            color: #fff;
            text-wrap: balance;
        }

        .container {
            max-width: 1280px;
        }

        .section {
            padding: 96px 0;
            position: relative;
        }

        section,
        footer {
            scroll-margin-top: 80px;
        }

        .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 0.12em;
            color: var(--aqua);
            text-transform: uppercase;
        }

        .eyebrow::before {
            content: "";
            width: 28px;
            height: 2px;
            background: var(--aqua);
            border-radius: 2px;
        }

        .page-title-section {
            font-size: 1.5rem;
            font-weight: 600;
            line-height: 1.4;
            margin-bottom: 8px;
        }

        .text-secondary-sa {
            color: var(--white-2) !important;
        }

        .text-muted-sa {
            color: var(--white-3) !important;
        }

        .glass-card {
            background: linear-gradient(145deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.03));
            border: 1px solid var(--border-glass);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
        }

        /* Header / Navigation */
        .sa-navbar {
            min-height: var(--nav-height);
            padding: 0;
            background: rgba(6, 16, 31, 0.88);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
        }

        .sa-brand {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            padding: 8px 0;
        }

        .sa-logo-mark {
            width: 38px;
            height: 38px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
        }

        .sa-logo-mark svg {
            width: 100%;
            height: 100%;
        }

        .sa-logo-text {
            display: inline-flex;
            flex-direction: column;
            line-height: 1.2;
        }

        .sa-logo-text strong {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            letter-spacing: 0.02em;
        }

        .sa-logo-text small {
            font-size: 10px;
            letter-spacing: 0.28em;
            color: var(--white-2);
            text-transform: uppercase;
        }

        .navbar-toggler {
            border: 1px solid rgba(255, 255, 255, 0.28);
            border-radius: 10px;
            padding: 6px 10px;
        }

        .navbar-toggler:focus {
            box-shadow: 0 0 0 4px var(--primary-glow);
            border-color: var(--primary);
        }

        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(255,255,255,0.85)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        .sa-navbar .nav {
            align-items: center;
        }

        .sa-navbar .navbar-nav .nav-link {
            color: var(--white-2);
            font-weight: 500;
            font-size: 15px;
            padding: 10px 16px;
            margin: 0 4px;
            border-radius: 999px;
            border: 1px solid transparent;
            transition: color .2s ease, background .2s ease, border-color .2s ease;
        }

        .sa-navbar .navbar-nav .nav-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.04);
        }

        .sa-navbar .navbar-nav .nav-link.active {
            background: rgba(46, 168, 255, 0.14);
            border-color: rgba(46, 168, 255, 0.4);
            color: var(--primary);
            font-weight: 600;
        }

        .nav-cta {
            padding-left: 16px;
        }

        .btn-sa-primary,
        .btn-sa-ghost {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            font-size: 15px;
            font-weight: 600;
            line-height: 1;
            padding: 14px 24px;
            border-radius: 12px;
            transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease, background .2s ease;
            border: 0;
        }

        .btn-sa-primary {
            background: linear-gradient(135deg, #2EA8FF 0%, #0F5F9E 100%);
            color: #fff;
            box-shadow: 0 8px 30px var(--primary-glow);
        }

        .btn-sa-primary:hover {
            transform: translateY(-2px);
            color: #fff;
            box-shadow: 0 12px 34px rgba(46, 168, 255, 0.36);
        }

        .btn-sa-primary:focus-visible,
        .btn-sa-ghost:focus-visible {
            outline: none;
            box-shadow: 0 0 0 4px var(--primary-glow);
        }

        .btn-sa-ghost {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.28);
            color: #fff;
        }

        .btn-sa-ghost:hover {
            border-color: var(--primary);
            background: rgba(46, 168, 255, 0.1);
            color: #fff;
            transform: translateY(-2px);
        }

        .nav-cta .btn-sa-primary {
            padding: 12px 20px;
            min-height: 44px;
        }

        /* Category Hero */
        .category-hero {
            position: relative;
            padding: 152px 0 72px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            background:
                linear-gradient(90deg, rgba(6, 16, 31, 0.94) 0%, rgba(6, 16, 31, 0.76) 56%, rgba(10, 29, 51, 0.58) 100%),
                url('/assets/images/backpic/back-2.webp') center 28% / cover no-repeat;
        }

        .category-hero .breadcrumb-sa {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            font-size: 14px;
            color: var(--white-3);
            margin-bottom: 28px;
        }

        .category-hero .breadcrumb-sa a {
            color: var(--white-2);
            margin-right: 8px;
        }

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

        .category-hero .breadcrumb-sa span {
            margin: 0 6px;
        }

        .category-hero h1 {
            font-size: 46px;
            font-weight: 700;
            letter-spacing: -0.02em;
            margin: 0 0 16px;
            max-width: 680px;
        }

        .category-hero .hero-lead {
            color: var(--white-2);
            font-size: 17px;
            line-height: 1.9;
            max-width: 690px;
            margin-bottom: 30px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }

        .hero-visual {
            margin-top: 22px;
        }

        .hero-panel {
            background: linear-gradient(160deg, rgba(255, 255, 255, 0.09), rgba(255, 255, 255, 0.03));
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-lg);
            padding: 28px;
            box-shadow: var(--shadow);
            backdrop-filter: blur(14px);
        }

        .hero-panel .panel-heading {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 18px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }

        .hero-panel .panel-heading svg {
            width: 30px;
            height: 30px;
        }

        .hero-panel ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .hero-panel li {
            display: flex;
            gap: 12px;
            align-items: flex-start;
            padding: 12px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            color: var(--white-2);
            font-size: 15px;
        }

        .hero-panel li:last-child {
            border-bottom: 0;
        }

        .hero-panel li i {
            color: var(--aqua);
            margin-top: 5px;
            font-size: 14px;
            width: 18px;
            text-align: center;
        }

        /* Overview / side layout */
        .overview-stack h2 {
            font-size: 34px;
            margin-bottom: 22px;
            max-width: 560px;
        }

        .overview-stack p {
            color: var(--white-2);
            margin-bottom: 22px;
            max-width: 700px;
        }

        .overview-quote {
            border-left: 3px solid var(--primary);
            background: rgba(46, 168, 255, 0.08);
            border-radius: 0 16px 16px 0;
            padding: 20px 24px;
            margin: 30px 0 0;
            color: var(--white-1);
            font-size: 17px;
            font-weight: 500;
            max-width: 700px;
        }

        .side-card {
            position: sticky;
            top: 104px;
            padding: 28px;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            background: linear-gradient(150deg, rgba(255, 255, 255, 0.09), rgba(255, 255, 255, 0.03));
            border: 1px solid rgba(255, 255, 255, 0.14);
        }

        .side-card h3 {
            font-size: 17px;
            color: #fff;
            margin-bottom: 18px;
            padding-bottom: 12px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .side-card .anchor-list {
            list-style: none;
            margin: 0 0 24px;
            padding: 0;
        }

        .side-card .anchor-list a {
            display: flex;
            align-items: center;
            justify-content: space-between;
            color: var(--white-2);
            font-size: 15px;
            line-height: 1.4;
            padding: 11px 4px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .side-card .anchor-list a:hover {
            color: var(--primary);
            padding-left: 8px;
        }

        .side-card .anchor-list i {
            font-size: 12px;
        }

        /* Capability */
        .capability-main-row {
            gap: 24px 0;
        }

        .feature-card {
            border-radius: var(--radius);
            padding: 34px;
            background: linear-gradient(150deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.03));
            border: 1px solid var(--border-glass);
            box-shadow: var(--shadow);
            transition: transform .25s ease, border-color .25s ease, box-shadow .25s ease;
            height: 100%;
        }

        .feature-card:hover {
            transform: translateY(-4px);
            border-color: rgba(46, 168, 255, 0.6);
            box-shadow: var(--shadow-hover);
        }

        .feature-card .icon-box {
            width: 58px;
            height: 58px;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: var(--primary);
            background: rgba(46, 168, 255, 0.12);
            margin-bottom: 22px;
        }

        .feature-card h3 {
            font-size: 20px;
            color: #fff;
            margin-bottom: 12px;
        }

        .feature-card p {
            font-size: 15px;
            color: var(--white-2);
            margin-bottom: 20px;
        }

        .feature-card .tagpill {
            display: inline-flex;
            gap: 8px;
            flex-wrap: wrap;
        }

        .tagpill span {
            background: rgba(77, 227, 192, 0.09);
            border: 1px solid rgba(77, 227, 192, 0.24);
            color: var(--aqua);
            font-size: 13px;
            font-weight: 500;
            padding: 4px 12px;
            border-radius: 999px;
        }

        .feature-row-card {
            display: flex;
            align-items: flex-start;
            gap: 18px;
            padding: 22px;
            border-radius: var(--radius);
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            margin-bottom: 16px;
            transition: border-color .25s ease, transform .25s ease;
        }

        .feature-row-card:hover {
            border-color: rgba(46, 168, 255, 0.4);
            transform: translateY(-2px);
        }

        .feature-row-card .icon-box {
            min-width: 48px;
            min-height: 48px;
            width: 48px;
            height: 48px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 14px;
            color: var(--aqua);
            background: rgba(77, 227, 192, 0.1);
            font-size: 20px;
        }

        .feature-row-card h4 {
            font-size: 17px;
            margin: 0 0 6px;
            color: #fff;
        }

        .feature-row-card p {
            margin: 0;
            color: var(--white-2);
            font-size: 14px;
            line-height: 1.7;
        }

        /* Projects */
        .project-card {
            border-radius: var(--radius-lg);
            overflow: hidden;
            background: linear-gradient(160deg, rgba(255, 255, 255, 0.09), rgba(255, 255, 255, 0.03));
            border: 1px solid var(--border-glass);
            height: 100%;
            display: flex;
            flex-direction: column;
            box-shadow: var(--shadow);
            transition: transform .25s ease, border-color .25s ease;
        }

        .project-card:hover {
            transform: translateY(-6px);
            border-color: rgba(46, 168, 255, 0.55);
        }

        .project-card .project-img {
            height: 260px;
            object-fit: cover;
            width: 100%;
        }

        .project-card--side .project-img {
            height: 180px;
        }

        .project-body {
            padding: 26px;
            display: flex;
            flex-direction: column;
            flex: 1 1 auto;
        }

        .project-body .project-tag {
            align-self: flex-start;
            background: rgba(245, 179, 77, 0.12);
            border: 1px solid rgba(245, 179, 77, 0.28);
            color: var(--amber);
            border-radius: 999px;
            padding: 2px 12px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.05em;
            margin-bottom: 14px;
        }

        .project-body h3 {
            font-size: 20px;
            color: #fff;
            margin-bottom: 10px;
        }

        .project-body p {
            color: var(--white-2);
            font-size: 15px;
            line-height: 1.75;
            margin-bottom: 18px;
        }

        .project-link {
            margin-top: auto;
            font-size: 15px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .project-link i {
            font-size: 13px;
            transition: transform .2s ease;
        }

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

        /* Process / Flow */
        .process-wrap {
            background: linear-gradient(180deg, rgba(10, 29, 51, 0.26), rgba(6, 16, 31, 0.2));
            border-radius: var(--radius-lg);
            padding: 42px;
            border: 1px solid rgba(255, 255, 255, 0.08);
        }

        .process-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 32px 44px;
            margin-top: 10px;
        }

        .process-step {
            position: relative;
            padding-left: 72px;
        }

        .process-step .step-num {
            position: absolute;
            left: 0;
            top: 0;
            width: 50px;
            height: 50px;
            border-radius: 16px;
            background: rgba(46, 168, 255, 0.1);
            border: 1px solid rgba(46, 168, 255, 0.35);
            color: var(--primary);
            font-size: 16px;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            font-family: "DIN Alternate", "Bebas Neue", var(--font-sans);
        }

        .process-step h3 {
            font-size: 19px;
            color: #fff;
            margin-bottom: 6px;
        }

        .process-step p {
            color: var(--white-2);
            font-size: 15px;
            line-height: 1.75;
            margin-bottom: 0;
        }

        @media (min-width: 992px) {
            .process-grid {
                gap: 36px 60px;
            }
        }

        @media (max-width: 767.98px) {
            .process-grid {
                grid-template-columns: 1fr;
            }
        }

        /* FAQ */
        .faq-list {
            max-width: 960px;
        }

        .faq-item {
            border-radius: 18px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.11);
            margin-bottom: 16px;
            overflow: hidden;
            transition: border-color .2s ease;
        }

        .faq-item:has(.show) {
            border-color: rgba(46, 168, 255, 0.36);
        }

        .faq-q {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            text-align: left;
            gap: 20px;
            padding: 22px 24px;
            background: transparent;
            border: 0;
            color: #fff;
            font-weight: 600;
            font-size: 17px;
            line-height: 1.5;
        }

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

        .faq-q:focus-visible {
            outline: none;
            box-shadow: inset 0 0 0 2px var(--primary);
            border-radius: 18px;
        }

        .faq-q .faq-icon {
            flex: 0 0 auto;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            border: 1px solid rgba(255, 255, 255, 0.28);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 15px;
            color: var(--primary);
            background: rgba(46, 168, 255, 0.08);
            transition: transform .25s ease, background .25s ease, border-color .25s ease;
        }

        .faq-item .faq-q[aria-expanded="true"] .faq-icon {
            transform: rotate(45deg);
            border-color: var(--primary);
            background: rgba(46, 168, 255, 0.18);
        }

        .faq-a-wrap {
            padding: 0 24px 22px;
        }

        .faq-a {
            color: var(--white-2);
            line-height: 1.85;
            font-size: 15px;
        }

        /* CTA / Contact */
        .cta-panel {
            position: relative;
            border-radius: 30px;
            padding: 58px 58px 54px;
            overflow: hidden;
            background:
                linear-gradient(115deg, rgba(4, 14, 27, 0.93), rgba(8, 26, 48, 0.78)),
                url('/assets/images/backpic/back-1.png') center / cover no-repeat;
            border: 1px solid rgba(255, 255, 255, 0.12);
            box-shadow: var(--shadow);
        }

        .cta-panel h2 {
            font-size: 32px;
            margin: 10px 0 12px;
            color: #fff;
        }

        .cta-panel .cta-desc {
            color: var(--white-2);
            max-width: 560px;
            font-size: 16px;
            margin-bottom: 34px;
        }

        .cta-form {
            max-width: 640px;
        }

        .cta-form .form-group {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .cta-form .form-control-sa {
            flex: 1 1 auto;
            min-height: 52px;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 13px;
            padding: 12px 18px;
            color: #fff;
            font-size: 15px;
            box-shadow: none;
            transition: border-color .2s ease, box-shadow .2s ease;
        }

        .cta-form .form-control-sa::placeholder {
            color: rgba(255, 255, 255, 0.45);
        }

        .cta-form .form-control-sa:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 4px var(--primary-glow);
            background: rgba(255, 255, 255, 0.1);
        }

        .cta-form .btn-sa-primary {
            min-height: 52px;
            white-space: nowrap;
        }

        .form-note {
            margin-top: 16px;
            font-size: 13px;
            color: var(--white-3);
        }

        @media (min-width: 768px) {
            .cta-form .form-group {
                flex-direction: row;
            }
            .cta-form .form-control-sa {
                width: auto;
            }
        }

        /* Footer */
        .footer {
            background: #040A12;
            padding: 72px 0 0;
            margin-top: 40px;
            color: var(--white-2);
        }

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

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 18px;
        }

        .footer p.footer-intro {
            font-size: 15px;
            line-height: 1.85;
            max-width: 360px;
            margin-bottom: 14px;
        }

        .footer h5 {
            font-size: 16px;
            margin-bottom: 20px;
            color: #fff;
            font-weight: 600;
        }

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

        .footer-links li,
        .footer-contact-list li {
            margin-bottom: 12px;
            font-size: 15px;
        }

        .footer-links a {
            color: var(--white-2);
            transition: color .2s ease, padding-left .2s ease;
        }

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

        .footer-contact-list li {
            display: flex;
            gap: 10px;
            align-items: flex-start;
            color: var(--white-2);
        }

        .footer-contact-list i {
            margin-top: 6px;
            color: var(--primary);
            width: 18px;
            text-align: center;
        }

        .footer-bottom {
            margin-top: 52px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 26px 0 30px;
        }

        .footer-bottom-inner {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 10px;
            font-size: 13px;
            color: var(--white-3);
        }

        .footer-bottom-inner a {
            color: var(--white-3);
        }

        .back-home-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--primary);
        }

        /* Responsive */
        @media (max-width: 1199.98px) {
            .category-hero h1 {
                font-size: 40px;
            }
        }

        @media (max-width: 991.98px) {
            .section {
                padding: 72px 0;
            }

            .sa-navbar .navbar-collapse {
                background: rgba(6, 16, 31, 0.98);
                padding: 14px 0 18px;
                border-radius: 0 0 18px 18px;
                margin-top: 2px;
            }

            .sa-navbar .navbar-nav .nav-link {
                display: inline-block;
                margin: 4px 0;
                border-radius: 14px;
                padding-left: 18px;
                padding-right: 18px;
            }

            .nav-cta {
                padding: 18px 0 0;
            }

            .nav-cta .btn-sa-primary {
                width: 100%;
                justify-content: center;
            }

            .category-hero {
                padding-top: 132px;
            }

            .side-card {
                position: static;
                margin-top: 30px;
            }

            .cta-panel {
                padding: 36px 26px;
            }
        }

        @media (max-width: 767.98px) {
            .section {
                padding: 56px 0;
            }

            h1,
            .category-hero h1 {
                font-size: 30px;
                letter-spacing: -0.01em;
            }

            .category-hero .hero-lead {
                font-size: 15px;
            }

            .overview-stack h2 {
                font-size: 26px;
            }

            .feature-card {
                padding: 26px;
            }

            .feature-row-card {
                flex-direction: column;
            }

            .project-body {
                padding: 20px;
            }

            .process-wrap {
                padding: 28px 22px;
            }

            .process-step {
                padding-left: 0;
                padding-top: 64px;
            }

            .process-step .step-num {
                top: 0;
            }

            .cta-panel {
                border-radius: 22px;
                padding: 30px 18px;
            }

            .cta-panel h2 {
                font-size: 24px;
            }

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

            .footer {
                padding-top: 56px;
            }
        }

        @media (min-width: 576px) and (max-width: 767.98px) {
            .process-grid {
                gap: 44px 24px;
            }
        }