/* roulang page: index */
*,:root{
            --color-bg-page:#0A121E;--color-bg-footer:#070C14;--color-bg-deep:rgba(15,23,42,.5);
            --color-glass:rgba(20,28,46,.72);--color-glass-border:rgba(255,255,255,.09);
            --color-primary:#3D8BFF;--color-accent:#F5B630;--color-accent-rgb:245,182,48;
            --color-success:#2FD3A2;--color-warning:#F59E0B;--color-danger:#F87171;
            --color-text-main:#F3F7FB;--color-text-sub:#9DB0C3;--color-text-deep:#C7D4E2;
            --color-divider:rgba(148,163,184,.14);--color-white-translucent:rgba(255,255,255,.04);
            --radius-card:20px;--radius-small:12px;--radius-tag:999px;--radius-element:10px;
            --shadow-card:0 24px 60px rgba(0,0,0,.45),0 1px 1px rgba(255,255,255,.04);
            --shadow-btn:0 10px 40px rgba(245,182,48,.22);--space-section:120px;--color-font:Montserrat;
        }
        @media(max-width:992px){:root{--space-section:80px}}
        @media(max-width:768px){:root{--space-section:60px}}
        *,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
        html{scroll-behavior:smooth}
        @media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
        body{font-family:PingFang SC,Microsoft YaHei,Noto Sans CJK SC,Source Han Sans SC,sans-serif;background:var(--color-bg-page);color:var(--color-text-main);font-size:1rem;line-height:1.75;-webkit-font-smoothing:antialiased}
        body::before{content:'';position:fixed;inset:0;pointer-events:none;z-index:0;background-image:radial-gradient(ellipse 60% 40% at 75% -5%,rgba(61,139,255,.15),transparent),radial-gradient(ellipse 30% 25% at -10% 10%,rgba(245,182,48,.07),transparent);}
        body::after{content:'';position:fixed;inset:0;pointer-events:none;z-index:0;opacity:.025;background-image:linear-gradient(rgba(255,255,255,.6) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.6) 1px,transparent 1px);background-size:44px 44px}
        img{max-width:100%;display:block;object-fit:cover}
        a{color:inherit;text-decoration:none;transition:color .25s ease}
        ul,ol{list-style:none}
        button,input,select,textarea{font:inherit;color:inherit;background:none;border:none;outline:none}
        @media(prefers-reduced-motion:reduce){*,*::before,*::after{animation-duration:0s!important;transition-duration:0s!important;scroll-behavior:auto!important}}
        .container{width:100%;max-width:1232px;margin:0 auto;padding-left:24px;padding-right:24px;position:relative;z-index:1}
        main{position:relative;z-index:1;overflow:hidden}
        ::selection{background:rgba(61,139,255,.35);color:#fff}
        .container { max-width: 1260px; }
          @media (max-width: 576px){.container{padding-left:18px;padding-right:18px}}
          .section{padding-top:var(--space-section);padding-bottom:var(--space-section)}
          .section-alt{background:var(--color-bg-deep);border-top:1px solid var(--color-divider);border-bottom:1px solid var(--color-divider)}
          .section-head{max-width:720px;margin-bottom:52px}
          .section-head.center{margin-left:auto;margin-right:auto;text-align:center}
          .section-head .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:.8rem;letter-spacing:.12em;color:var(--color-accent);text-transform:uppercase;font-weight:600;margin-bottom:14px}
          .section-head .eyebrow::after{content:'';width:28px;height:1px;background:var(--color-accent);opacity:.65}
          .section-head.center .eyebrow::after{display:none}
          .section-head h2{font-size:clamp(1.6rem,3vw,2.3rem);font-weight:700;line-height:1.3;letter-spacing:-.01em;margin-bottom:12px}
          .section-head h2 .accent{color:var(--color-accent)}
          .section-head p{color:var(--color-text-sub);font-size:1.05rem;line-height:1.8}
          @media(max-width:768px){.section-head{margin-bottom:38px}}
          .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:var(--radius-tag);font-weight:600;font-size:.95rem;line-height:1;height:48px;padding:0 32px;cursor:pointer;transition:background .3s,box-shadow .3s,transform .2s,border-color .3s,color .3s;white-space:nowrap;border:1px solid transparent;text-decoration:none}
          .btn-primary{background:linear-gradient(135deg,#FFD166 0%,#F5B630 50%,#F08C00 100%);color:#111215;box-shadow:var(--shadow-btn),inset 0 1px 0 rgba(255,255,255,.35)}
          .btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 50px rgba(245,182,48,.34);background:linear-gradient(135deg,#FFD878,#F7BC40)}
          .btn-primary:active{transform:translateY(0)}
          .btn-primary:focus-visible,.btn-ghost:focus-visible{outline:2px solid var(--color-accent);outline-offset:3px}
          .btn-ghost{background:rgba(255,255,255,.05);border-color:rgba(255,255,255,.14);color:var(--color-text-main);box-shadow:inset 0 0 0 1px rgba(255,255,255,.02);backdrop-filter:blur(8px)}
          .btn-ghost:hover{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.28);transform:translateY(-2px);box-shadow:0 8px 24px rgba(0,0,0,.3)}
          .btn-ghost:active{transform:translateY(0)}
          .btn-large{height:56px;padding:0 40px;font-size:1rem}
          .btn-block{width:100%}
          .badge,.tag-font{display:inline-flex;align-items:center;gap:6px;background:rgba(61,139,255,.16);color:var(--color-primary);border-radius:var(--radius-tag);padding:6px 16px;font-size:.82rem;font-weight:500}
          .badge-accent{background:rgba(245,182,48,.12);color:var(--color-accent)}
          .tag-font{background:rgba(255,255,255,.06);color:var(--color-text-sub)}
          @keyframes fadeUp{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}
          header{position:fixed;top:0;left:0;right:0;z-index:100;transition:background .35s ease,backdrop-filter .35s ease,border-color .35s ease;border-bottom:1px solid transparent;padding:0}
            header.scrolled{background:rgba(7,13,22,.8);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-color:rgba(148,163,184,.14)}
            .header-top-row{display:flex;align-items:center;justify-content:space-between;height:72px;gap:20px;transition:height .3s}
            .logo-area{display:flex;align-items:center;gap:10px;flex-shrink:0;text-decoration:none;font-weight:700;font-size:1.2rem;color:var(--color-text-main);letter-spacing:.01em}
            .logo-icon{position:relative;width:38px;height:38px;border-radius:11px;background:linear-gradient(145deg,var(--color-primary),#2563eb);display:flex;align-items:center;justify-content:center;box-shadow:0 8px 22px rgba(61,139,255,.25),inset 0 1px 0 rgba(255,255,255,.4);flex-shrink:0}
    .logo-icon svg{width:20px;height:20px;fill:#fff}
        .logo-text{font-size:1.2rem;font-weight:700;line-height:1.2}
        .logo-text small{display:block;font-size:.58rem;color:var(--color-text-sub);font-weight:400;letter-spacing:.18em;text-transform:uppercase;margin-top:1px}
        .nav-menu{display:flex;align-items:center;gap:4px;flex-wrap:wrap;justify-content:flex-end}
        .nav-link{display:flex;align-items:center;padding:8px 16px;border-radius:10px;font-size:.93rem;color:var(--color-text-sub);transition:background .2s,color .2s;white-space:nowrap;line-height:1.2;font-weight:500;background:transparent}
        .nav-link:hover{color:#fff;background:rgba(255,255,255,.06)}
        .nav-link.active{color:var(--color-text-main);font-weight:600}
        .nav-link.active::after{content:'';display:block;width:14px;height:2px;background:var(--color-accent);border-radius:2px;position:absolute;bottom:4px;left:50%;transform:translateX(-50%)}
        .nav-link.active{position:relative}
        .nav-cta{display:inline-flex;margin-left:8px;background:linear-gradient(135deg,#FFD166,#F5B630);color:#14161c;height:44px;padding:0 24px;border-radius:999px;align-items:center;font-weight:700;font-size:.9rem;transition:transform .2s,box-shadow .25s;box-shadow:0 4px 20px rgba(245,182,48,.2)}
        .nav-cta:hover{transform:translateY(-2px);box-shadow:0 10px 32px rgba(245,182,48,.35);color:#14161c}
        .nav-toggle{display:none;width:44px;height:44px;border-radius:10px;background:rgba(255,255,255,.06);border:1px solid var(--color-glass-border);margin-left:8px;align-items:center;justify-content:center;cursor:pointer}
        .nav-toggle span{display:block;width:20px;height:2px;background:var(--color-text-main);position:relative;transition:.3s}
        .nav-toggle span::before,.nav-toggle span::after{content:'';width:20px;height:2px;background:var(--color-text-main);position:absolute;left:0;transition:.3s}
        .nav-toggle span::before{top:-6px}
        .nav-toggle span::after{top:6px}
        .main-nav{display:flex;align-items:center;flex:1;justify-content:flex-end;gap:0px}
        @media(max-width:992px){.nav-toggle{display:inline-flex;z-index:101}}
        @media(max-width:992px){.main-nav{position:fixed;top:0;right:0;width:min(370px,100%);height:100dvh;background:rgba(7,12,20,.94);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);flex-direction:column;justify-content:flex-start;align-items:stretch;padding:80px 26px 32px;gap:8px;transform:translateX(110%);transition:transform .35s cubic-bezier(.4,0,.2,1);box-shadow:-16px 0 60px rgba(0,0,0,.5);z-index:99;border-left:1px solid rgba(255,255,255,.06)}
            main-nav.is-open{transform:translateX(0)}
                .main-nav .nav-link{font-size:1rem;padding:12px 18px;border-radius:12px;justify-content:flex-start}
                .main-nav .nav-link.active{background:rgba(61,139,255,.1)}
                .main-nav .nav-link::after{display:none}
                .nav-cta{margin-top:auto;margin-left:0;justify-content:center;height:50px;width:100%}
                .header-top-row{height:60px}
        }
        @media(min-width:993px){.main-nav{flex-direction:row}}
        .hero{position:relative;padding-top:170px;padding-bottom:100px;overflow:hidden;background-image:linear-gradient(180deg,rgba(10,18,30,0) 0%,rgba(10,18,30,1) 100%),linear-gradient(90deg,rgba(10,18,30,.6),rgba(10,18,30,.25),rgba(10,18,30,.65)),url(/assets/images/backpic/back-1.webp);background-size:cover;background-position:center 75%}
        .hero::after{content:'';position:absolute;top:-50%;right:-10%;width:600px;height:600px;background:radial-gradient(circle,rgba(245,182,48,.09),transparent 60%);pointer-events:none}
        .hero-inner{display:grid;grid-template-columns:1.15fr .85fr;gap:60px;align-items:center;position:relative;z-index:2}
        .hero-badge{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.1);padding:8px 18px;border-radius:100px;font-size:.85rem;color:var(--color-text-sub);margin-bottom:20px;backdrop-filter:blur(12px)}
        .hero-badge i{width:8px;height:8px;border-radius:50%;background:var(--color-success);display:inline-block;position:relative}
        .hero-badge i::after{content:'';position:absolute;inset:-4px;border:1px solid rgba(47,211,162,.4);border-radius:50%;animation:pulse 2s infinite}
        .hero h1{font-size:clamp(2rem,5vw,3.5rem);font-weight:800;line-height:1.18;letter-spacing:-.015em;margin-bottom:20px}
        .hero h1 .gradient-text{background:linear-gradient(115deg,#fff 25%,#9FC4FF 60%,var(--color-accent));-webkit-background-clip:text;background-clip:text;color:transparent}
        .hero-desc{font-size:1.12rem;color:var(--color-text-sub);line-height:1.85;max-width:600px;margin-bottom:34px}
        .hero-btns{display:flex;gap:14px;flex-wrap:wrap;align-items:center}
        .hero-meta-note{display:flex;gap:26px;margin-top:46px;padding-top:26px;border-top:1px solid var(--color-divider);flex-wrap:wrap}
        .hero-meta-note .meta-item{display:flex;align-items:center;gap:10px;font-size:.9rem;color:var(--color-text-deep)}
        .hero-meta-note .meta-item i{width:18px;height:18px;border-radius:6px;background:rgba(61,139,255,.15)}
        .hero-visual{position:relative;z-index:2}
        .hero-visual-content{position:relative;border-radius:24px;padding:28px;overflow:hidden;background:rgba(18,25,40,.75);border:1px solid rgba(255,255,255,.08);backdrop-filter:blur(18px);box-shadow:0 40px 70px rgba(0,0,0,.45)}
        .hero-visual-card{position:relative;z-index:1;border-radius:18px;overflow:hidden}
        .hero-visual-card img{width:100%;height:260px;object-fit:cover}
        .hero-float-stats{display:flex;gap:14px;margin-top:18px}
        .mini-stat{flex:1;background:rgba(255,255,255,.045);border-radius:14px;padding:14px 12px;border:1px solid rgba(255,255,255,.07);text-align:center}
        .mini-stat strong{font-size:1.22rem;font-weight:700;color:var(--color-accent);display:block;line-height:1.3}
        .mini-stat span{font-size:.75rem;color:var(--color-text-sub)}
        .trust-bar{padding:22px 0;border-top:1px solid var(--color-divider);border-bottom:1px solid var(--color-divider);background:rgba(15,23,42,.25)}
        .trust-inner{display:flex;flex-wrap:wrap;gap:28px;justify-content:space-between;align-items:center}
        .trust-item{display:flex;gap:12px;align-items:center;font-size:.9rem;color:var(--color-text-deep)}
        .trust-item i{width:34px;height:34px;border-radius:10px;background:rgba(61,139,255,.12);display:flex;align-items:center;justify-content:center;color:var(--color-primary);font-style:normal;font-weight:800;flex-shrink:0}
        @media(max-width:992px){.hero{padding-top:140px}.hero-inner{grid-template-columns:1fr;gap:40px}.hero-desc{font-size:1.05rem}.trust-inner{justify-content:flex-start}}
        @media(max-width:768px){.hero{padding-top:110px;padding-bottom:60px}}
        @keyframes pulse{0%{box-shadow:0 0 0 0 rgba(47,211,162,.4)}80%{box-shadow:0 0 0 12px rgba(47,211,162,0)}100%{box-shadow:0 0 0 0 rgba(47,211,162,0)}}
        .how-wrap{position:relative}
        .how-steps{display:grid;grid-template-columns:1fr;gap:0;position:relative}
        .how-step-wrap{display:grid;grid-template-columns:110px 1fr;gap:36px;margin-bottom:54px;position:relative}
        .how-step-wrap:last-child{margin-bottom:0}
        .how-step-indicator{text-align:right;padding-top:4px}
        .how-step-indicator .num{font-size:1.8rem;font-weight:800;font-family:'SF Mono',Consolas,monospace;display:block}
        .how-step-wrap:nth-child(1) .num{color:var(--color-primary)}
        .how-step-wrap:nth-child(2) .num{color:var(--color-accent)}
        .how-step-wrap:nth-child(3) .num{color:var(--color-success)}
        .how-step-wrap:nth-child(odd){direction:ltr}
        .how-step-card{background:rgba(20,28,46,.55);border:1px solid rgba(255,255,255,.08);border-radius:var(--radius-card);padding:34px 30px;position:relative;transition:border-color .3s;border-left:2px solid var(--color-primary)}
    .how-step-card.step-2{border-left-color:var(--color-accent)}
        .how-step-card.step-3{border-left-color:var(--color-success)}
        .how-step-card:hover{border-color:rgba(255,255,255,.14)}
        .how-step-card h3{font-size:1.15rem;margin-bottom:8px}
        .how-step-card p{color:var(--color-text-sub);margin-bottom:18px}
        .how-step-link{font-size:.88rem;color:var(--color-accent);font-weight:500}
        .showcase-grid{display:grid;grid-template-columns:1.3fr 1fr;gap:24px}
        .showcase-grid .feature-card{display:grid;grid-template-columns:1fr 1fr;background:var(--color-glass);border:1px solid var(--color-glass-border);border-radius:22px;overflow:hidden;transition:transform .3s,box-shadow .3s}
        .showcase-grid .feature-image{position:relative;min-height:240px;overflow:hidden}
        .showcase-grid .feature-image img{position:absolute;inset:0;width:100%;height:100%}
        .showcase-body{padding:34px;display:flex;flex-direction:column}
        .showcase-subgrid{display:flex;flex-direction:column;gap:24px}
        .showcase-subgrid .feature-card{grid-template-columns:1fr}
        .showcase-subgrid .feature-image{min-height:175px}
        .feature-tag{margin-bottom:12px;display:inline-block}
        @media(max-width:992px){.showcase-grid{grid-template-columns:1fr}.showcase-grid .feature-card{grid-template-columns:1fr}}
        @media(max-width:680px){.showcase-grid .feature-body{padding:24px}}
        .content-news{background:rgba(15,23,42,.48);border-top:1px solid var(--color-divider);border-bottom:1px solid var(--color-divider)}
        .news-container{display:grid;grid-template-columns:1fr;max-width:860px;margin:0 auto}
        .news-item{display:flex;justify-content:space-between;gap:18px;padding:22px;border-radius:16px;text-decoration:none;transition:background .2s}
    .news-item:hover{background:rgba(255,255,255,.035)}
        .news-item+.news-item{border-top:1px solid var(--color-divider)}
        .news-main{display:flex;flex-direction:column;gap:10px}
        .news-tag-wrap{display:flex;gap:8px;flex-wrap:wrap}
        .news-title{font-weight:600;font-size:1rem;color:var(--color-text-main)}
        .news-title:hover{color:var(--color-primary)}
        .news-summary{font-size:.9rem;color:var(--color-text-sub);max-width:560px;line-height:1.7}
        .news-read{font-size:.86rem;color:var(--color-accent);display:inline-flex;align-items:center;gap:4px;font-weight:500}
        .news-date{font-size:.8rem;color:var(--color-text-sub);text-align:right;flex-shrink:0;padding-top:2px}
        .empty-list-state{text-align:center;padding:36px;background:rgba(255,255,255,.02);border-radius:16px;color:var(--color-text-sub);font-size:.95rem;border:1px dashed rgba(148,163,184,.2)}
        .empty-list-state-icon{font-size:2.2rem;margin-bottom:10px}
        .faq-wrap{max-width:800px;margin:0 auto;display:flex;flex-direction:column;gap:1px;background:var(--color-glass);border:1px solid rgba(255,255,255,.08);border-radius:22px;overflow:hidden}
        .faq-item{border-bottom:1px solid rgba(255,255,255,.05);background:rgba(20,28,46,.5)}
        .faq-item:last-child{border-bottom:none}
        .faq-question{width:100%;display:flex;justify-content:space-between;align-items:center;gap:20px;padding:22px 28px;cursor:pointer;font-size:1rem;font-weight:600;text-align:left;color:var(--color-text-main);transition:background .2s}
        .faq-question:hover{background:rgba(255,255,255,.03)}
        .faq-icon{flex-shrink:0;width:28px;height:28px;border-radius:50%;border:1px solid rgba(245,182,48,.4);display:flex;align-items:center;justify-content:center;font-size:1.2rem;color:var(--color-accent);transition:transform .3s;line-height:1;font-style:normal;font-weight:300}
        .faq-item.active .faq-icon{transform:rotate(45deg)}
        .faq-question:focus-visible{outline:none;background:rgba(61,139,255,.08)}
        .faq-answer{padding:0 28px;max-height:0;overflow:hidden;transition:max-height .35s ease,padding .35s ease}
        .faq-answer p{padding-bottom:24px;color:var(--color-text-sub);font-size:.95rem}
        .cta-section{position:relative;overflow:hidden;padding-top:100px;padding-bottom:100px;border-top:1px solid var(--color-divider)}
        .cta-section::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 80% at 50% 100%,rgba(245,182,48,.1),transparent 70%),radial-gradient(ellipse 40% 50% at -5% 30%,rgba(61,139,255,.09),transparent);pointer-events:none}
        .cta-inner{position:relative;display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
        .cta-left h2{font-size:clamp(1.8rem,3.5vw,2.6rem);line-height:1.25;font-weight:700;margin-bottom:20px}
        .cta-left p{color:var(--color-text-sub);font-size:1.02rem;max-width:420px}
        .cta-right .lead-form{display:flex;flex-direction:column;gap:18px}
        .form-group label{font-size:.85rem;color:var(--color-text-sub);margin-bottom:8px;display:block}
        .form-input,.form-select{width:100%;height:48px;padding:0 14px;border-radius:12px;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);color:var(--color-text-main);font-size:.95rem;transition:border-color .3s,background .3s}
        .form-input:hover,.form-select:hover{background:rgba(255,255,255,.08)}
        .form-input:focus,.form-select:focus{border-color:var(--color-primary);outline:none;background:rgba(255,255,255,.08);box-shadow:0 0 0 3px rgba(61,139,255,.09)}
        .form-group{display:flex;flex-direction:column}
        .form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px}
        .form-message{display:none;padding:12px 16px;border-radius:12px;font-size:.9rem}
        .form-success{background:rgba(47,211,162,.12);color:var(--color-success);display:block}
        .form-error{background:rgba(248,113,113,.12);color:var(--color-danger);display:block}
        .cta-bullets{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:20px}
        .cta-bullet{display:inline-flex;align-items:center;gap:8px;font-size:.88rem;color:var(--color-text-deep)}
        .cta-bullet i{width:21px;height:21px;border-radius:50%;background:rgba(47,211,162,.15);color:var(--color-success);display:inline-flex;align-items:center;justify-content:center;font-style:normal;font-weight:700}
        @media(max-width:992px){.cta-inner{grid-template-columns:1fr}}
        @media(max-width:560px){.form-row{grid-template-columns:1fr}.btn-large{padding:0 20px}}.footer{position:relative;background:var(--color-bg-footer);border-top:1px solid rgba(148,163,184,.1);padding-top:60px;overflow:hidden}
        .footer::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 30% 40% at 70% 30%,rgba(61,139,255,.06),transparent);pointer-events:none}
        .footer-inner{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:50px}
        .footer-brand-info{max-width:300px}
        .footer-logo-area{display:flex;align-items:center;gap:10px;font-size:1.1rem;font-weight:700;color:var(--color-text-main);margin-bottom:16px}
        .footer-desc{font-size:.9rem;color:var(--color-text-sub);line-height:1.7}
        .footer-column h4{color:var(--color-text-main);font-size:.95rem;margin-bottom:18px}
        .footer-column .footer-links{display:flex;flex-direction:column}
        .footer-link{padding:6px 0;font-size:.88rem;color:var(--color-text-sub)}
        .footer-link:hover{color:var(--color-accent)}
        .footer-contact{font-size:.85rem;color:var(--color-text-sub);display:flex;flex-direction:column;gap:10px}
        .footer-contact div{display:flex;align-items:center;gap:8px}
        .footer-bottom{border-top:1px solid rgba(148,163,184,.09);padding:24px 0;position:relative}
        .footer-bottom-inner{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;font-size:.8rem;color:var(--color-text-sub)}
        .footer-copyright{display:flex;align-items:center;gap:15px;flex-wrap:wrap}
        .footer-copyright span:last-child{color:rgba(156,179,197,.55)}
        @media(max-width:992px){.footer-inner{grid-template-columns:1fr 1fr}}
        @media(max-width:620px){.footer-inner{grid-template-columns:1fr}}
        .category-guide-list{display:flex;flex-direction:column;gap:12px;padding:10px 0 0}
        .category-guide-item{display:flex;gap:12px;align-items:center;padding:10px 0}
        .category-guide-icon{width:36px;height:36px;border-radius:10px;background:rgba(61,139,255,.1);color:var(--color-primary);flex-shrink:0;display:flex;align-items:center;justify-content:center;font-weight:700}
        .guide-list-item{font-size:.9rem;color:var(--color-text-deep)}
        .guide-more{display:inline-flex;align-items:center;gap:6px;color:var(--color-primary);font-size:.85rem;font-weight:500}
        .backpic-cover{background:url(/assets/images/backpic/back-2.png) center/100%}

/* roulang page: article */
:root {
            --bg-deep: #070C14;
            --bg: #0A121E;
            --bg-soft: rgba(15, 23, 42, .5);
            --glass: rgba(20, 28, 46, .66);
            --glass-strong: rgba(16, 24, 40, .86);
            --line: rgba(148, 163, 184, .14);
            --white: #F3F7FB;
            --muted: #9DB0C3;
            --blue: #3D8BFF;
            --blue-soft: rgba(61, 139, 255, .16);
            --gold: #F5B630;
            --gold-light: #FFD36E;
            --success: #2FD3A2;
            --danger: #F87171;
            --radius: 20px;
            --radius-sm: 12px;
            --radius-circle: 999px;
            --shadow-card: 0 18px 40px rgba(0, 0, 0, .24);
            --shadow-float: 0 22px 54px rgba(0, 0, 0, .34);
            --nav-height: 72px;
            --container: 1200px;
            --space-section: 96px;
            --font: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", "Inter", "Roboto", sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            margin: 0;
            min-height: 100vh;
            background: var(--bg);
            background-image: radial-gradient(circle at 72% -10%, rgba(61, 139, 255, .08), transparent 36%), radial-gradient(circle at 12% 108%, rgba(245, 182, 48, .04), transparent 30%);
            color: var(--white);
            font-family: var(--font);
            font-size: 1rem;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }
        body.nav-open {
            overflow: hidden;
        }
        ::selection {
            background: rgba(245, 182, 48, .25);
            color: #fff;
        }
        a {
            color: inherit;
            text-decoration: none;
        }
        img {
            max-width: 100%;
            display: block;
            border: 0;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: .95rem;
            color: inherit;
        }
        h1,
        h2,
        h3,
        h4,
        p,
        ul,
        ol,
        figure {
            margin: 0;
            padding: 0;
        }
        .container {
            width: min(1200px, calc(100% - 48px));
            margin-inline: auto;
        }
        .site-header {
            position: sticky;
            top: 0;
            z-index: 80;
            height: var(--nav-height);
            background: rgba(7, 12, 20, .72);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid transparent;
            transition: background .3s ease, border-color .3s ease;
        }
        .site-header.is-scrolled {
            background: rgba(5, 9, 16, .92);
            border-bottom-color: var(--line);
        }
        .header-top-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            height: var(--nav-height);
        }
        .logo-area {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            border-radius: 12px;
            outline: none;
            flex-shrink: 0;
        }
        .logo-area:focus-visible {
            box-shadow: 0 0 0 3px rgba(61, 139, 255, .45);
        }
        .logo-icon {
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: linear-gradient(145deg, rgba(61, 139, 255, .24), rgba(61, 139, 255, .06));
            border: 1px solid rgba(255, 255, 255, .14);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            box-shadow: inset 0 1px 0 rgba(255, 255, 255, .1), 0 10px 20px rgba(0, 0, 0, .25);
        }
        .logo-icon svg {
            width: 20px;
            height: 20px;
            fill: #6DB1FF;
        }
        .logo-text {
            font-size: 1.22rem;
            font-weight: 700;
            letter-spacing: .01em;
            line-height: 1.2;
            display: flex;
            align-items: baseline;
            gap: 8px;
        }
        .logo-text small {
            display: inline-block;
            font-size: .7rem;
            font-weight: 500;
            color: var(--muted);
            letter-spacing: .12em;
            padding: 2px 8px;
            border: 1px solid var(--line);
            border-radius: var(--radius-circle);
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-link,
        .nav-cta {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-height: 44px;
            padding: 0 18px;
            border-radius: var(--radius-circle);
            font-size: .95rem;
            font-weight: 500;
            color: #cbd8e6;
            transition: all .22s ease;
            white-space: nowrap;
        }
        .nav-link {
            position: relative;
        }
        .nav-link:hover,
        .nav-link:focus-visible {
            background: rgba(255, 255, 255, .07);
            color: var(--white);
        }
        .nav-link.active {
            color: #fff;
            background: rgba(61, 139, 255, .14);
        }
        .nav-link.active::after {
            content: "";
            position: absolute;
            left: 20px;
            right: 20px;
            bottom: 2px;
            height: 2px;
            background: var(--gold);
            border-radius: 99px;
        }
        .nav-cta {
            margin-left: 10px;
            background: linear-gradient(135deg, var(--gold-light), var(--gold));
            color: #171114;
            font-weight: 700;
            min-height: 46px;
            padding: 0 22px;
            box-shadow: 0 0 0 1px rgba(255, 255, 255, .15) inset, 0 14px 28px rgba(245, 182, 48, .18);
        }
        .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 0 1px rgba(255, 255, 255, .2) inset, 0 16px 32px rgba(245, 182, 48, .28);
            color: #101014;
        }
        .nav-cta:focus-visible,
        .btn:focus-visible {
            outline: none;
            box-shadow: 0 0 0 3px rgba(245, 182, 48, .45);
        }
        .nav-toggle {
            display: none;
            width: 46px;
            height: 46px;
            background: transparent;
            border: 0;
            border-radius: 12px;
            position: relative;
            cursor: pointer;
        }
        .nav-toggle span,
        .nav-toggle span::before,
        .nav-toggle span::after {
            content: "";
            display: block;
            width: 22px;
            height: 2px;
            background: var(--white);
            border-radius: 4px;
            transition: all .25s ease;
            position: absolute;
            left: 12px;
        }
        .nav-toggle span {
            top: 22px;
        }
        .nav-toggle span::before {
            top: -7px;
        }
        .nav-toggle span::after {
            top: 7px;
        }
        .site-header.nav-open .nav-toggle span {
            background: transparent;
        }
        .site-header.nav-open .nav-toggle span::before {
            top: 0;
            transform: rotate(45deg);
        }
        .site-header.nav-open .nav-toggle span::after {
            top: 0;
            transform: rotate(-45deg);
        }

        .article-banner {
            position: relative;
            padding: 76px 0 64px;
            background: var(--bg-deep) center/cover no-repeat;
            border-bottom: 1px solid var(--line);
            overflow: hidden;
        }
        .article-banner.with-bg {
            background-image: linear-gradient(rgba(7, 12, 20, .86), rgba(7, 12, 20, .86)), url('/assets/images/backpic/back-2.png');
        }
        .article-banner::after {
            content: "";
            position: absolute;
            width: 500px;
            height: 500px;
            right: -160px;
            top: -220px;
            background: radial-gradient(circle, rgba(61, 139, 255, .13), transparent 67%);
            pointer-events: none;
        }
        .article-banner .container {
            position: relative;
            z-index: 1;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: .9rem;
            color: var(--muted);
            margin-bottom: 34px;
        }
        .breadcrumb a {
            color: var(--muted);
            transition: color .2s ease;
        }
        .breadcrumb a:hover {
            color: var(--white);
        }
        .breadcrumb .sep {
            opacity: .5;
        }
        .article-kicker {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: .8rem;
            color: #8CB9FF;
            letter-spacing: .04em;
            margin-bottom: 16px;
        }
        .article-kicker::before {
            content: "";
            width: 18px;
            height: 1px;
            background: var(--gold);
        }
        .article-banner h1 {
            max-width: 880px;
            font-size: clamp(1.9rem, 4.6vw, 3.4rem);
            font-weight: 700;
            line-height: 1.28;
            letter-spacing: .01em;
        }
        .article-lead {
            max-width: 780px;
            margin-top: 18px;
            color: var(--muted);
            font-size: 1.05rem;
            line-height: 1.8;
        }
        .article-meta-row {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px 20px;
            margin-top: 30px;
        }
        .article-meta-item {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--muted);
            font-size: .9rem;
        }
        .article-meta-item .dot {
            width: 4px;
            height: 4px;
            border-radius: 50%;
            background: var(--muted);
            opacity: .6;
        }
        .article-tag {
            display: inline-flex;
            padding: 4px 14px;
            border: 1px solid rgba(61, 139, 255, .4);
            background: rgba(61, 139, 255, .1);
            color: #B5D6FF;
            border-radius: var(--radius-circle);
            font-size: .82rem;
        }

        .article-content-section {
            padding: 72px 0 40px;
        }
        .article-content-column {
            max-width: 820px;
            margin-inline: auto;
        }
        .article-body {
            background: var(--bg-soft);
            border: 1px solid var(--line);
            border-radius: var(--radius);
            padding: clamp(30px, 7vw, 64px);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            box-shadow: var(--shadow-card);
        }
        .article-body .prose {
            color: #DCE6F0;
        }
        .article-body:empty {
            padding: 0;
            border: 0;
            background: transparent;
            box-shadow: none;
        }

        .prose {
            font-size: 1rem;
            line-height: 1.9;
        }
        .prose p {
            margin-bottom: 1.4em;
        }
        .prose h2 {
            font-size: clamp(1.3rem, 2.6vw, 1.8rem);
            line-height: 1.5;
            font-weight: 650;
            margin: 1.8em 0 .8em;
            color: var(--white);
            padding-left: 16px;
            position: relative;
        }
        .prose h2::before {
            content: "";
            position: absolute;
            left: 0;
            top: .35em;
            bottom: .35em;
            width: 4px;
            border-radius: 4px;
            background: linear-gradient(180deg, var(--blue), rgba(61, 139, 255, .5));
        }
        .prose h3 {
            font-size: 1.18rem;
            color: var(--white);
            margin: 1.6em 0 .75em;
            font-weight: 600;
        }
        .prose ul,
        .prose ol {
            padding-left: 1.3em;
            margin: 0 0 1.4em;
            display: grid;
            gap: .45em;
        }
        .prose li::marker {
            color: var(--gold);
        }
        .prose blockquote {
            border-left: 3px solid var(--gold);
            background: rgba(245, 182, 48, .06);
            padding: 18px 22px;
            border-radius: 0 12px 12px 0;
            margin: 0 0 1.4em;
            color: #D8E2EC;
        }
        .prose a {
            color: #7DB9FF;
            text-decoration: underline;
            text-underline-offset: 4px;
            transition: color .2s ease;
        }
        .prose a:hover {
            color: var(--white);
        }
        .prose img {
            border-radius: 16px;
            margin: 1.5em 0;
        }
        .prose table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.5em 0;
            font-size: .95rem;
            border-radius: 12px;
            overflow: hidden;
            background: rgba(10, 18, 30, .5);
        }
        .prose th {
            background: rgba(61, 139, 255, .16);
            color: var(--white);
            text-align: left;
            padding: 12px 14px;
            border-bottom: 1px solid var(--line);
        }
        .prose td {
            padding: 12px 14px;
            border-bottom: 1px solid var(--line);
            color: #CBD6E2;
        }
        .prose tr:hover td {
            background: rgba(255, 255, 255, .02);
        }
        .prose pre {
            background: #0B111B;
            border: 1px solid var(--line);
            border-radius: 12px;
            padding: 16px 18px;
            overflow-x: auto;
            margin: 1.4em 0;
            color: #d7e6f5;
        }
        .prose code {
            font-family: "SFMono-Regular", Consolas, monospace;
            font-size: .9em;
        }

        .article-bottom-zone {
            padding: 24px 0 88px;
        }
        .article-body-actions {
            max-width: 820px;
            margin: 0 auto 54px;
            text-align: center;
            padding: 34px;
            background: rgba(15, 23, 42, .42);
            border: 1px solid var(--line);
            border-radius: var(--radius);
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-height: 48px;
            padding: 0 24px;
            border-radius: var(--radius-circle);
            border: 0;
            cursor: pointer;
            font-weight: 600;
            font-size: .98rem;
            transition: transform .2s ease, box-shadow .2s ease, background .2s ease, color .2s ease;
            outline-offset: 4px;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--gold-light), var(--gold));
            color: #151018;
            box-shadow: 0 12px 26px rgba(245, 182, 48, .18);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 16px 32px rgba(245, 182, 48, .3);
        }
        .btn-ghost {
            background: rgba(255, 255, 255, .05);
            border: 1px solid rgba(255, 255, 255, .18);
            color: #e2ebf4;
        }
        .btn-ghost:hover {
            background: rgba(255, 255, 255, .1);
            transform: translateY(-2px);
        }
        .btn-group {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: center;
            gap: 14px;
        }
        .article-tags {
            margin-top: 18px;
            font-size: .85rem;
            color: var(--muted);
        }

        .related-section {
            background: rgba(10, 18, 30, .4);
            border-top: 1px solid var(--line);
            border-bottom: 1px solid var(--line);
            padding: 84px 0;
        }
        .section-head {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 24px;
            margin-bottom: 36px;
        }
        .section-head h2 {
            font-size: clamp(1.5rem, 3vw, 2.2rem);
            font-weight: 600;
            letter-spacing: .01em;
        }
        .section-head .head-note {
            color: var(--muted);
            font-size: .95rem;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .guide-card {
            display: flex;
            flex-direction: column;
            background: var(--glass);
            border: 1px solid var(--line);
            border-radius: var(--radius);
            overflow: hidden;
            position: relative;
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            box-shadow: var(--shadow-card);
            transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
        }
        .guide-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, .28), transparent);
        }
        .guide-card:hover {
            transform: translateY(-6px);
            border-color: rgba(255, 255, 255, .2);
            box-shadow: var(--shadow-float);
        }
        .guide-media {
            margin: 12px 12px 0;
            border-radius: 14px;
            overflow: hidden;
            aspect-ratio: 16/10;
            background: #0c1b28;
        }
        .guide-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }
        .guide-card:hover .guide-media img {
            transform: scale(1.04);
        }
        .guide-body {
            padding: 20px 22px 24px;
            display: flex;
            flex-direction: column;
            gap: 10px;
            flex: 1;
        }
        .guide-body h3 {
            font-size: 1.15rem;
            font-weight: 600;
            line-height: 1.55;
        }
        .guide-body p {
            color: var(--muted);
            font-size: .9rem;
            line-height: 1.75;
            flex: 1;
        }
        .guide-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--gold);
            font-size: .92rem;
            font-weight: 500;
            margin-top: 6px;
            width: fit-content;
            transition: letter-spacing .2s ease;
        }
        .guide-link:hover {
            letter-spacing: .03em;
        }

        .cta-section {
            padding: 92px 0;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: "";
            position: absolute;
            width: 700px;
            height: 700px;
            left: 50%;
            bottom: -500px;
            transform: translateX(-56%);
            background: radial-gradient(circle, rgba(61, 139, 255, .08), transparent 66%);
            pointer-events: none;
        }
        .cta-card {
            position: relative;
            background: var(--glass);
            border: 1px solid var(--line);
            border-radius: 28px;
            padding: clamp(28px, 6vw, 58px);
            box-shadow: var(--shadow-card);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            display: grid;
            grid-template-columns: 1fr .8fr;
            gap: 36px;
        }
        .cta-card::before {
            content: "";
            position: absolute;
            inset: 0;
            border-radius: 28px;
            padding: 1px;
            background: linear-gradient(135deg, rgba(255, 255, 255, .1), transparent 35%);
            -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
            -webkit-mask-composite: xor;
            mask-composite: exclude;
            pointer-events: none;
        }
        .cta-title {
            font-size: clamp(1.8rem, 3.6vw, 2.6rem);
            font-weight: 700;
            line-height: 1.35;
            letter-spacing: .01em;
        }
        .cta-desc {
            margin-top: 16px;
            color: var(--muted);
            font-size: 1.02rem;
            max-width: 560px;
        }
        .cta-features {
            display: grid;
            grid-template-columns: repeat(3, auto);
            gap: 22px 28px;
            margin-top: 28px;
            width: fit-content;
        }
        .cta-feature {
            display: flex;
            align-items: center;
            gap: 8px;
            color: #d0dbe6;
            font-size: .9rem;
        }
        .cta-feature .check {
            width: 20px;
            height: 20px;
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: rgba(47, 211, 162, .12);
            color: var(--success);
            font-size: .8rem;
        }
        .contact-form {
            background: rgba(7, 13, 22, .45);
            border: 1px solid var(--line);
            border-radius: 20px;
            padding: clamp(20px, 4vw, 32px);
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .form-label {
            display: block;
            font-size: .9rem;
            color: #cfdae6;
            margin-bottom: 8px;
        }
        .form-control {
            width: 100%;
            min-height: 48px;
            border-radius: 12px;
            border: 1px solid var(--line);
            background: rgba(15, 23, 42, .7);
            padding: 12px 15px;
            color: var(--white);
            outline: none;
            transition: border-color .2s ease, box-shadow .2s ease;
        }
        .form-control:focus {
            border-color: rgba(61, 139, 255, .7);
            box-shadow: 0 0 0 3px rgba(61, 139, 255, .15);
        }
        textarea.form-control {
            min-height: 100px;
            resize: vertical;
        }
        .form-status {
            font-size: .88rem;
            color: var(--success);
            min-height: 20px;
        }
        .form-status.error {
            color: var(--danger);
        }

        .footer {
            background: #05090f;
            border-top: 1px solid var(--line);
            padding: 64px 0 0;
            margin-top: auto;
        }
        .footer-inner {
            display: grid;
            grid-template-columns: 1.5fr .9fr .9fr 1fr;
            gap: 36px;
            padding-bottom: 48px;
        }
        .footer-logo-area {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.2rem;
            font-weight: 700;
        }
        .footer-logo-area .logo-icon {
            width: 32px;
            height: 32px;
            border-radius: 9px;
        }
        .footer-desc {
            color: var(--muted);
            font-size: .9rem;
            line-height: 1.8;
            max-width: 410px;
            margin-top: 14px;
        }
        .footer-column h4 {
            font-size: .9rem;
            color: #cee0f1;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .footer-links {
            display: grid;
            gap: 10px;
        }
        .footer-link {
            color: var(--muted);
            font-size: .9rem;
            transition: color .2s ease, padding-left .2s ease;
            width: fit-content;
        }
        .footer-link:hover {
            color: var(--white);
            padding-left: 3px;
        }
        .footer-contact {
            display: grid;
            gap: 12px;
            color: var(--muted);
            font-size: .9rem;
        }
        .footer-bottom {
            border-top: 1px solid var(--line);
            padding: 18px 0;
        }
        .footer-bottom-inner {
            display: flex;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            font-size: .84rem;
            color: #718498;
        }
        .footer-copyright {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        .not-found-wrapper {
            min-height: 68vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 80px 24px;
            text-align: center;
        }
        .not-found-panel {
            max-width: 640px;
            width: 100%;
            background: var(--glass);
            border: 1px solid var(--line);
            border-radius: 28px;
            padding: clamp(32px, 7vw, 68px);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            box-shadow: var(--shadow-card);
        }
        .not-found-panel .code {
            font-size: clamp(3rem, 10vw, 5.5rem);
            font-weight: 800;
            line-height: 1;
            letter-spacing: .04em;
            background: linear-gradient(135deg, #ffffff, #82AFFF);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }
        .not-found-panel h1 {
            font-size: 1.6rem;
            margin-top: 20px;
            font-weight: 650;
        }
        .not-found-panel p {
            color: var(--muted);
            margin: 16px 0 28px;
        }

        @media (max-width: 992px) {
            :root {
                --space-section: 72px;
            }
            .main-nav {
                position: fixed;
                inset: 0;
                height: 100dvh;
                z-index: 90;
                background: var(--glass-strong);
                backdrop-filter: blur(24px);
                -webkit-backdrop-filter: blur(24px);
                flex-direction: column;
                justify-content: center;
                align-items: center;
                gap: 12px;
                opacity: 0;
                visibility: hidden;
                transform: translateY(10px);
                transition: all .28s ease;
                padding-bottom: 80px;
            }
            .header-top-row {
                position: relative;
                z-index: 100;
            }
            .site-header.nav-open .main-nav {
                opacity: 1;
                visibility: visible;
                transform: translateY(0);
            }
            .nav-link {
                font-size: 1.05rem;
                min-width: 220px;
                min-height: 48px;
            }
            .nav-cta {
                margin: 14px 0 0;
                min-width: 220px;
            }
            .nav-toggle {
                display: inline-flex;
            }
            .cta-card {
                grid-template-columns: 1fr;
            }
            .footer-inner {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            :root {
                --nav-height: 60px;
                --space-section: 56px;
            }
            .container {
                width: min(100% - 32px, 1200px);
            }
            .logo-text {
                font-size: 1.05rem;
            }
            .logo-text small {
                display: none;
            }
            .related-grid {
                grid-template-columns: 1fr;
            }
            .cta-features {
                grid-template-columns: 1fr;
                gap: 10px;
            }
            .footer-inner {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-bottom-inner {
                flex-direction: column;
            }
            .article-banner {
                padding: 54px 0 44px;
            }
        }
        @media (max-width: 576px) {
            .section-head h2 {
                font-size: 1.4rem;
            }
            .article-body {
                padding: 24px 18px;
            }
            .btn-group .btn {
                width: 100%;
            }
            .nav-cta {
                width: calc(100% - 48px);
                position: fixed;
                bottom: 20px;
                left: 24px;
                right: 24px;
                z-index: 110;
                min-height: 50px;
            }
            .main-nav {
                justify-content: flex-start;
                padding-top: 70px;
                overflow-y: auto;
            }
            .nav-cta {
                margin-left: 0;
            }
            .not-found-panel .code {
                font-size: 3rem;
            }
        }
        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation-duration: .01ms !important;
                animation-iteration-count: 1 !important;
                transition-duration: .01ms !important;
                scroll-behavior: auto !important;
            }
        }

/* roulang page: category1 */
:root {
  --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", system-ui, -apple-system, sans-serif;
  --container: 1200px;
  --bg-deep: #070C14;
  --bg-page: #0A121E;
  --bg-soft: rgba(15, 23, 42, 0.42);
  --glass: rgba(20, 28, 46, 0.66);
  --glass-strong: rgba(14, 23, 39, 0.84);
  --line: rgba(148, 163, 184, 0.14);
  --line-bright: rgba(255, 255, 255, 0.08);
  --text: #F3F7FB;
  --muted: #9DB0C3;
  --muted-2: #C6D5E4;
  --blue: #3D8BFF;
  --gold: #F5B630;
  --gold-soft: rgba(245, 182, 48, 0.14);
  --success: #2FD3A2;
  --warning: #F59E0B;
  --danger: #F87171;
  --radius-lg: 20px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --shadow-card: 0 18px 42px rgba(0, 0, 0, 0.2);
  --shadow-gold: 0 8px 24px rgba(245, 182, 48, 0.24);
  --header-h: 72px;
  --space: clamp(56px, 8vw, 96px);
}
*,
*::before,
*::after {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  color-scheme: dark;
}
body {
  margin: 0;
  background: var(--bg-page);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image: radial-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px);
  background-size: 26px 26px;
}
img {
  display: block;
  max-width: 100%;
  height: auto;
  background: #101B2B;
}
a {
  color: inherit;
  text-decoration: none;
}
ul {
  list-style: none;
  margin: 0;
  padding: 0;
}
button,
input,
select,
textarea {
  font-family: inherit;
  font-size: 1rem;
  color: inherit;
}
button {
  border: 0;
  cursor: pointer;
}
:where(a, button, input, select, textarea, summary):focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
  border-radius: 8px;
}
::selection {
  background: rgba(245, 182, 48, 0.24);
  color: #fff;
}
.skip-link {
  position: absolute;
  left: 16px;
  top: -80px;
  z-index: 200;
  padding: 10px 16px;
  background: var(--gold);
  color: #101820;
  border-radius: 0 0 10px 10px;
  transition: top 0.2s;
}
.skip-link:focus {
  top: 0;
}
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: clamp(16px, 3vw, 24px);
}

/* Header */
#siteHeader {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(7, 12, 20, 0.58);
  border-bottom: 1px solid transparent;
  transition: background 0.35s, border-color 0.35s, backdrop-filter 0.35s;
}
#siteHeader.is-scrolled {
  background: rgba(7, 13, 24, 0.86);
  border-bottom-color: var(--line);
  backdrop-filter: blur(16px);
}
.header-top-row {
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  position: relative;
  z-index: 3;
}
.logo-area {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  flex-shrink: 0;
  border-radius: 10px;
  padding: 6px 4px;
}
.logo-icon {
  display: inline-grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 11px;
  background: linear-gradient(135deg, #FFC94D, #F0A52C);
  color: #0C1420;
  box-shadow: 0 8px 18px rgba(245, 182, 48, 0.22);
}
.logo-icon svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
}
.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
  font-size: 1.08rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  color: #fff;
}
.logo-text small {
  margin-top: 3px;
  font-size: 0.63rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--muted);
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 6px;
}
.nav-link,
.nav-cta {
  border-radius: 999px;
  white-space: nowrap;
}
.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 15px;
  font-size: 0.94rem;
  font-weight: 500;
  color: #C6D6E6;
  transition: color 0.24s, background 0.24s, transform 0.24s;
}
.nav-link:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.07);
  transform: translateY(-1px);
}
.nav-link.active {
  color: #fff;
  background: rgba(255, 255, 255, 0.06);
}
.nav-link.active::after {
  content: "";
  position: absolute;
  left: 15px;
  right: 15px;
  bottom: 5px;
  height: 2px;
  border-radius: 2px;
  background: var(--gold);
}
.nav-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 44px;
  padding: 0 22px;
  margin-left: 6px;
  background: linear-gradient(135deg, #FFD05E, #F3A82E);
  color: #101820;
  font-size: 0.94rem;
  font-weight: 700;
  box-shadow: var(--shadow-gold);
  transition: transform 0.24s, box-shadow 0.24s, filter 0.24s;
}
.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(245, 182, 48, 0.32);
  filter: brightness(1.04);
}
.nav-cta:active {
  transform: translateY(0);
  box-shadow: 0 5px 16px rgba(245, 182, 48, 0.2);
}
.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.04);
  position: relative;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  content: "";
  position: absolute;
  left: 12px;
  width: 20px;
  height: 2px;
  border-radius: 2px;
  background: #F3F7FB;
  transition: transform 0.3s, opacity 0.3s, top 0.3s;
}
.nav-toggle span {
  top: 21px;
}
.nav-toggle span::before {
  top: -6px;
}
.nav-toggle span::after {
  top: 6px;
}
.nav-toggle.is-active span {
  background: transparent;
}
.nav-toggle.is-active span::before {
  top: 0;
  transform: rotate(45deg);
}
.nav-toggle.is-active span::after {
  top: 0;
  transform: rotate(-45deg);
}

/* Page hero */
.category-hero {
  position: relative;
  padding: calc(var(--header-h) + 74px) 0 84px;
  background:
    linear-gradient(180deg, rgba(8, 14, 24, 0.4), rgba(9, 16, 28, 0.88)),
    url('/assets/images/backpic/back-1.webp') center / cover no-repeat;
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}
.category-hero::before {
  content: "";
  position: absolute;
  width: 520px;
  height: 520px;
  right: -120px;
  top: 60px;
  background: radial-gradient(circle, rgba(61, 139, 255, 0.16), transparent 68%);
  pointer-events: none;
}
.category-hero::after {
  content: "";
  position: absolute;
  width: 460px;
  height: 180px;
  left: -180px;
  bottom: -80px;
  background: radial-gradient(ellipse, rgba(245, 182, 48, 0.12), transparent 68%);
  pointer-events: none;
}
.category-hero .container {
  position: relative;
  z-index: 1;
}
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  font-size: 0.88rem;
  color: var(--muted);
  margin-bottom: 22px;
}
.breadcrumb a {
  color: var(--muted-2);
  transition: color 0.2s;
}
.breadcrumb a:hover {
  color: var(--gold);
}
.breadcrumb .breadcrumb-sep {
  color: rgba(157, 176, 195, 0.5);
}
.category-hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.04fr) minmax(300px, 0.96fr);
  align-items: center;
  gap: 56px;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 999px;
  border: 1px solid rgba(245, 182, 48, 0.3);
  background: rgba(245, 182, 48, 0.09);
  color: #F7C24E;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.08em;
}
.category-hero-copy h1 {
  font-size: clamp(1.95rem, 4.4vw, 3.3rem);
  line-height: 1.16;
  letter-spacing: -0.01em;
  margin: 20px 0 18px;
  color: #fff;
  font-weight: 700;
}
.category-hero-copy .hero-lead {
  max-width: 620px;
  font-size: 1.06rem;
  line-height: 1.9;
  color: #C6D6E5;
  margin-bottom: 30px;
}
.hero-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 26px;
  border-radius: 999px;
  font-weight: 700;
  line-height: 1;
  transition: transform 0.24s, box-shadow 0.24s, border-color 0.24s, background 0.24s, opacity 0.24s;
}
.btn-gold {
  background: linear-gradient(135deg, #FFD05E, #F1A72D);
  color: #101820;
  box-shadow: var(--shadow-gold);
}
.btn-gold:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 32px rgba(245, 182, 48, 0.34);
}
.btn-gold:active {
  transform: translateY(0);
  box-shadow: 0 6px 18px rgba(245, 182, 48, 0.22);
}
.btn-ghost {
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(255, 255, 255, 0.04);
  color: #DCE8F5;
}
.btn-ghost:hover {
  border-color: rgba(245, 182, 48, 0.5);
  background: rgba(245, 182, 48, 0.08);
  color: #fff;
  transform: translateY(-2px);
}
.hero-note {
  margin-top: 21px;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--muted);
  font-size: 0.88rem;
}
.hero-note::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 0 4px rgba(47, 211, 162, 0.12);
}
.hero-visual {
  position: relative;
}
.hero-frame {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--line-bright);
  box-shadow: 0 26px 64px rgba(0, 0, 0, 0.36);
}
.hero-frame img {
  width: 100%;
  aspect-ratio: 5 / 4;
  object-fit: cover;
}
.hero-caption {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-top: 16px;
}
.mini-cap {
  padding: 13px 8px;
  text-align: center;
  background: rgba(20, 28, 46, 0.58);
  border: 1px solid var(--line);
  border-radius: 14px;
  backdrop-filter: blur(8px);
}
.mini-cap strong {
  display: block;
  color: var(--text);
  font-size: 0.94rem;
  font-weight: 700;
}
.mini-cap small {
  color: var(--muted);
  font-size: 0.72rem;
  line-height: 1.5;
}

/* Capability strip */
.capability-strip {
  border-bottom: 1px solid var(--line);
  background: rgba(7, 13, 22, 0.62);
}
.strip-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 14px 20px;
  padding: 18px 0;
}
.strip-item {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: #A9BACC;
  font-size: 0.9rem;
}
.strip-item::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 4px rgba(245, 182, 48, 0.1);
}

/* Sections */
.section {
  padding-block: var(--space);
}
.section + .section {
  padding-top: 0;
}
.section-heading {
  max-width: 780px;
  margin: 0 auto 50px;
  text-align: center;
}
.section-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border: 1px solid rgba(61, 139, 255, 0.24);
  background: rgba(61, 139, 255, 0.08);
  border-radius: 999px;
  color: #82B4FF;
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  font-weight: 600;
}
.section-heading h2 {
  margin: 18px 0 14px;
  font-size: clamp(1.55rem, 3vw, 2.25rem);
  line-height: 1.3;
  color: #fff;
  font-weight: 700;
}
.section-heading p {
  margin: 0 auto;
  max-width: 720px;
  color: var(--muted);
  font-size: 1rem;
}
.section-heading.center p {
  margin-inline: auto;
}

/* Module layout */
.module-area {
  background: linear-gradient(180deg, rgba(7, 13, 23, 0.5), rgba(10, 18, 30, 0.32));
}
.module-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 38px;
  align-items: start;
}
.module-main {
  min-width: 0;
}
.side-sticky {
  position: sticky;
  top: calc(var(--header-h) + 24px);
  display: grid;
  gap: 20px;
}
.side-card {
  border: 1px solid var(--line);
  background: var(--glass);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}
.side-card-head {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 17px 18px 10px;
  border-bottom: 1px solid var(--line);
}
.side-card-head .side-hash {
  display: inline-grid;
  place-items: center;
  width: 25px;
  height: 25px;
  border-radius: 8px;
  background: rgba(245, 182, 48, 0.14);
  color: var(--gold);
  font-size: 0.82rem;
  font-weight: 800;
}
.side-card-head .side-card-title {
  font-weight: 700;
  font-size: 0.97rem;
  color: var(--text);
}
.toc-list {
  padding: 6px 0 12px;
}
.toc-list a {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 10px 18px;
  color: #BFD0E2;
  font-size: 0.9rem;
  line-height: 1.45;
  transition: background 0.2s, color 0.2s, padding-left 0.2s;
}
.toc-list a:hover {
  background: rgba(61, 139, 255, 0.08);
  color: #fff;
  padding-left: 21px;
}
.toc-list a .toc-num {
  font-size: 0.76rem;
  color: var(--gold);
  font-weight: 800;
  line-height: 1.55;
}
.side-media img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}
.side-img-copy {
  padding: 16px 18px 18px;
}
.side-img-copy p {
  margin: 0 0 12px;
  color: var(--muted);
  font-size: 0.87rem;
}
.side-mini-cta {
  padding: 16px 18px 18px;
}
.side-mini-cta h3 {
  font-size: 1rem;
  margin: 0 0 7px;
}
.side-mini-cta p {
  margin: 0 0 14px;
  color: var(--muted);
  font-size: 0.87rem;
}
.side-mini-cta .btn-block {
  width: 100%;
}
.btn-block {
  display: flex;
  width: 100%;
}
.module-track {
  display: grid;
  gap: 18px;
}
.module-entry {
  display: grid;
  grid-template-columns: 76px 1fr;
  gap: 4px 20px;
  padding: 28px 24px 24px 28px;
  border: 1px solid var(--line);
  background: var(--glass);
  border-radius: 18px;
  box-shadow: var(--shadow-card);
  transition: border-color 0.25s, transform 0.25s, background 0.25s;
}
.module-entry:hover {
  border-color: rgba(95, 160, 255, 0.24);
  transform: translateY(-2px);
  background: rgba(22, 31, 50, 0.72);
}
.module-num {
  font-size: 2.1rem;
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  background: linear-gradient(150deg, #FFF, #89B4FF 58%, transparent);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.module-entry h3 {
  margin: 5px 0 5px;
  color: #fff;
  font-size: 1.18rem;
  line-height: 1.45;
  font-weight: 700;
}
.module-tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 9px 0 13px;
}
.module-tag {
  display: inline-flex;
  align-items: center;
  padding: 4px 11px;
  border-radius: 999px;
  border: 1px solid rgba(61, 139, 255, 0.26);
  background: rgba(61, 139, 255, 0.08);
  color: #A7C8FF;
  font-size: 0.78rem;
}
.module-entry p {
  color: #B4C6DA;
  line-height: 1.85;
  margin: 0 0 16px;
}
.point-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px 26px;
}
.point-list li {
  position: relative;
  padding: 4px 0 4px 21px;
  color: #C0D1E3;
  font-size: 0.93rem;
  line-height: 1.7;
}
.point-list li::before {
  content: "";
  position: absolute;
  left: 3px;
  top: 14px;
  width: 7px;
  height: 7px;
  border-radius: 2px;
  background: var(--gold);
  box-shadow: 0 0 0 4px rgba(245, 182, 48, 0.1);
}
.combo-panel {
  margin-top: 28px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(13, 21, 35, 0.58);
}
.combo-panel h3 {
  margin: 0 0 6px;
  font-size: 1.2rem;
  color: #fff;
}
.combo-panel .combo-lead {
  color: var(--muted);
  margin: 0 0 14px;
  font-size: 0.92rem;
}
.combo-list {
  border-top: 1px solid var(--line);
}
.combo-item {
  display: grid;
  grid-template-columns: 46px 1fr;
  gap: 14px;
  padding: 17px 0;
  border-bottom: 1px solid var(--line);
}
.combo-item:last-child {
  border-bottom: 0;
}
.combo-index {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: 13px;
  background: rgba(61, 139, 255, 0.12);
  color: #8CB9FF;
  font-weight: 800;
  font-size: 0.96rem;
  letter-spacing: 0.04em;
}
.combo-item h4 {
  margin: 2px 0 4px;
  color: #fff;
  font-size: 1rem;
  font-weight: 700;
}
.combo-item p {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
  max-width: 640px;
}
.combo-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-top: 9px;
}
.combo-chip {
  padding: 3px 10px;
  font-size: 0.76rem;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.04);
  color: #A6B8CC;
}

/* FAQ */
.faq-section {
  background: rgba(15, 23, 42, 0.3);
}
.faq-panel {
  max-width: 920px;
  margin: 0 auto;
}
.faq-item {
  margin-bottom: 12px;
  border: 1px solid var(--line);
  background: rgba(20, 28, 46, 0.5);
  border-radius: 16px;
  overflow: hidden;
  transition: border-color 0.24s, background 0.24s;
}
.faq-item[open] {
  border-color: rgba(245, 182, 48, 0.26);
  background: rgba(21, 30, 48, 0.72);
}
.faq-item summary {
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
  min-height: 58px;
  padding: 15px 22px;
  cursor: pointer;
  color: #EDF3F9;
  font-weight: 600;
  font-size: 0.98rem;
  line-height: 1.6;
  transition: color 0.2s;
}
.faq-item summary::-webkit-details-marker {
  display: none;
}
.faq-item summary::after {
  content: "+";
  flex-shrink: 0;
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: rgba(245, 182, 48, 0.12);
  color: var(--gold);
  font-size: 1.45rem;
  line-height: 1;
  font-weight: 400;
  transition: transform 0.25s, background 0.25s, color 0.25s;
}
.faq-item[open] summary::after {
  content: "−";
  transform: rotate(180deg);
  background: var(--gold);
  color: #101820;
}
.faq-item summary:hover {
  color: #fff;
}
.faq-body {
  padding: 0 24px 22px 58px;
  color: #B7C8DA;
  line-height: 1.8;
}
.faq-body p {
  margin: 0;
}

/* CTA */
.cta-section {
  position: relative;
  padding: 90px 0 96px;
}
.cta-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 85% 20%, rgba(61, 139, 255, 0.11), transparent 50%),
              radial-gradient(ellipse at 12% 88%, rgba(245, 182, 48, 0.08), transparent 40%);
  pointer-events: none;
}
.cta-card {
  position: relative;
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 48px;
  align-items: center;
  padding: 52px;
  border: 1px solid var(--line-bright);
  border-radius: 28px;
  background:
    linear-gradient(180deg, rgba(9, 16, 28, 0.85), rgba(7, 12, 20, 0.94)),
    url('/assets/images/backpic/back-3.webp') center / cover no-repeat;
  box-shadow: 0 32px 90px rgba(0, 0, 0, 0.36);
  overflow: hidden;
}
.cta-card::after {
  content: "";
  position: absolute;
  right: -110px;
  top: -110px;
  width: 300px;
  height: 300px;
  border: 1px solid rgba(245, 182, 48, 0.18);
  border-radius: 50%;
  pointer-events: none;
}
.cta-copy,
.cta-form {
  position: relative;
  z-index: 1;
}
.cta-copy h2 {
  margin: 0 0 16px;
  font-size: clamp(1.5rem, 2.4vw, 2.1rem);
  line-height: 1.4;
  color: #fff;
}
.cta-copy p {
  margin: 0;
  color: var(--muted);
  line-height: 1.9;
  max-width: 460px;
}
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
.form-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.form-field span {
  font-size: 0.83rem;
  color: var(--muted-2);
  font-weight: 600;
}
.form-field.full {
  grid-column: 1 / -1;
}
.form-control {
  width: 100%;
  height: 46px;
  padding: 0 14px;
  border-radius: 12px;
  border: 1px solid rgba(148, 163, 184, 0.2);
  background: rgba(7, 12, 20, 0.72);
  color: var(--text);
  transition: border-color 0.2s, background 0.2s, box-shadow 0.2s;
}
textarea.form-control {
  height: 86px;
  padding: 12px 14px;
  resize: vertical;
  line-height: 1.6;
}
.form-control::placeholder {
  color: rgba(154, 178, 203, 0.55);
}
.form-control:focus {
  outline: none;
  border-color: rgba(61, 139, 255, 0.7);
  background: rgba(7, 12, 20, 0.88);
  box-shadow: 0 0 0 4px rgba(61, 139, 255, 0.12);
}
select.form-control option {
  background: #0F1826;
  color: #EAF1F8;
}
.form-submit-row {
  margin-top: 18px;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}
.form-status {
  display: none;
  width: 100%;
  padding: 11px 14px;
  border-radius: 12px;
  font-size: 0.88rem;
}
.form-status.success {
  display: block;
  color: #8DEDD1;
  background: rgba(47, 211, 162, 0.1);
  border: 1px solid rgba(47, 211, 162, 0.25);
}
.form-status.error {
  display: block;
  color: #FCA5A5;
  background: rgba(248, 113, 113, 0.1);
  border: 1px solid rgba(248, 113, 113, 0.25);
}

/* Footer */
.footer {
  background: #050A11;
  border-top: 1px solid rgba(148, 163, 184, 0.1);
}
.footer-inner {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.1fr;
  gap: 40px;
  padding: 58px 0 44px;
}
.footer-logo-area {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: #fff;
  font-weight: 800;
  font-size: 1.1rem;
}
.footer-desc {
  margin: 16px 0 0;
  max-width: 390px;
  color: rgba(157, 176, 195, 0.78);
  font-size: 0.92rem;
  line-height: 1.8;
}
.footer-column h4 {
  margin: 6px 0 16px;
  font-size: 0.97rem;
  color: #EAF2FA;
  font-weight: 700;
}
.footer-links {
  display: grid;
  gap: 9px;
}
.footer-link {
  color: rgba(157, 176, 195, 0.78);
  font-size: 0.9rem;
  transition: color 0.2s, padding-left 0.2s;
}
.footer-link:hover {
  color: var(--gold);
  padding-left: 4px;
}
.footer-contact {
  color: rgba(157, 176, 195, 0.78);
  font-size: 0.9rem;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.footer-bottom {
  border-top: 1px solid rgba(148, 163, 184, 0.08);
}
.footer-bottom-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
  padding: 22px 0;
}
.footer-copyright {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 0.84rem;
  color: rgba(157, 176, 195, 0.62);
}

/* Responsive */
@media (max-width: 1100px) {
  .module-grid {
    grid-template-columns: minmax(0, 1fr) 270px;
    gap: 26px;
  }
  .point-list {
    gap: 5px 18px;
  }
}
@media (max-width: 992px) {
  :root {
    --header-h: 60px;
  }
  .nav-toggle {
    display: flex;
  }
  .main-nav {
    position: fixed;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    gap: 6px;
    padding: 92px 24px 84px;
    background: rgba(5, 10, 18, 0.96);
    backdrop-filter: blur(20px);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-1.6%);
    transition: opacity 0.28s, transform 0.28s, visibility 0.28s;
  }
  .main-nav.is-open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }
  .main-nav .nav-link {
    width: min(360px, 100%);
    min-height: 50px;
    padding: 0 22px;
    font-size: 1.06rem;
    justify-content: center;
  }
  .main-nav .nav-link.active::after {
    left: 40%;
    right: 40%;
  }
  .main-nav .nav-cta {
    margin: 18px 0 0;
    width: min(360px, 100%);
    height: 50px;
  }
  .category-hero {
    padding-top: calc(var(--header-h) + 58px);
  }
  .category-hero-inner {
    grid-template-columns: 1fr;
    gap: 34px;
  }
  .category-hero-copy .hero-lead {
    max-width: 720px;
  }
  .hero-visual {
    max-width: 680px;
  }
  .module-grid {
    grid-template-columns: 1fr;
  }
  .side-sticky {
    position: static;
    grid-template-columns: 1fr 1fr;
    align-items: stretch;
  }
  .side-card:last-child {
    grid-column: span 2;
  }
  .section-heading h2 {
    margin-top: 14px;
  }
  .cta-card {
    grid-template-columns: 1fr;
    gap: 26px;
    padding: 38px;
  }
  .footer-inner {
    grid-template-columns: 1fr 1fr;
    gap: 34px 28px;
  }
}
@media (max-width: 768px) {
  .section {
    --space: 70px;
  }
  .module-entry {
    grid-template-columns: 1fr;
    gap: 12px;
    padding: 24px 20px;
  }
  .module-num {
    font-size: 1.6rem;
  }
  .point-list {
    grid-template-columns: 1fr;
  }
  .combo-panel {
    padding: 22px 18px;
  }
  .cta-card {
    padding: 32px 24px;
  }
  .form-grid {
    grid-template-columns: 1fr;
  }
  .form-field.full {
    grid-column: auto;
  }
  .footer-inner {
    grid-template-columns: 1fr 1fr;
  }
}
@media (max-width: 576px) {
  .logo-text {
    font-size: 0.98rem;
  }
  .logo-text small {
    letter-spacing: 0.12em;
  }
  .category-hero {
    padding-bottom: 62px;
  }
  .category-hero-copy h1 {
    font-size: 1.75rem;
  }
  .hero-actions .btn {
    width: 100%;
  }
  .hero-caption {
    grid-template-columns: 1fr;
  }
  .strip-wrap {
    justify-content: flex-start;
    flex-direction: column;
    align-items: flex-start;
  }
  .module-entry {
    padding: 20px 16px;
  }
  .module-tag-row {
    margin-bottom: 10px;
  }
  .point-list li {
    font-size: 0.9rem;
  }
  .side-sticky {
    grid-template-columns: 1fr;
  }
  .side-card:last-child {
    grid-column: auto;
  }
  .faq-item summary {
    padding: 14px 16px;
    font-size: 0.94rem;
  }
  .faq-body {
    padding: 0 17px 19px 17px;
    font-size: 0.92rem;
  }
  .footer-inner {
    grid-template-columns: 1fr;
    padding: 44px 0 36px;
  }
  .footer-desc {
    max-width: 100%;
  }
  .form-submit-row .btn {
    width: 100%;
  }
}
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* roulang page: category2 */
:root{
  --bg-page:#0A121E;
  --bg-immersive:#070C14;
  --bg-panel:rgba(15,23,42,.5);
  --glass:rgba(20,28,46,.66);
  --glass-border:rgba(255,255,255,.08);
  --blue:#3D8BFF;
  --gold:#F5B630;
  --text-main:#F3F7FB;
  --text-muted:#9DB0C3;
  --line:rgba(148,163,184,.14);
  --success:#2FD3A2;
  --warning:#F59E0B;
  --danger:#F87171;
  --radius-lg:20px;
  --radius-md:12px;
  --radius-sm:8px;
  --radius-pill:999px;
  --shadow-card:0 16px 40px rgba(2,6,14,.25);
  --shadow-gold:0 10px 30px rgba(245,182,48,.19);
  --font-main:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC","Source Han Sans SC",Inter,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:100px}
body{
  font-family:var(--font-main);
  background:var(--bg-page);
  color:var(--text-main);
  line-height:1.75;
  padding-top:72px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font-family:inherit;font-size:1rem}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section-alt{background:var(--bg-panel);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:820px;margin-bottom:44px}
.section-head.center{text-align:center;margin-left:auto;margin-right:auto}
.eyebrow{display:inline-flex;align-items:center;gap:8px;background:rgba(61,139,255,.1);border:1px solid rgba(61,139,255,.22);color:#BFD9FF;padding:7px 16px;border-radius:var(--radius-pill);font-size:.82rem;letter-spacing:.02em;font-weight:500}
.section-head h2{font-size:clamp(1.5rem,3vw,2.2rem);font-weight:600;line-height:1.35;margin:18px 0 12px;letter-spacing:-.01em}
.section-head p{color:var(--text-muted);font-size:1rem;max-width:720px}
.section-head.center p{margin-left:auto;margin-right:auto}
h1,h2,h3,h4,h5{line-height:1.35;text-wrap:balance}
h1{font-size:clamp(1.9rem,4.6vw,3.4rem);font-weight:700}
h2{font-size:clamp(1.45rem,3vw,2.15rem);font-weight:600;line-height:1.4}
h3{font-size:1.2rem;font-weight:600}
p{line-height:1.75}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  min-height:48px;padding:0 28px;border-radius:var(--radius-pill);
  font-weight:700;font-size:.96rem;cursor:pointer;transition:all .22s ease;
  border:1px solid transparent;white-space:nowrap;text-align:center;line-height:1.4;
}
.btn-primary{
  background:linear-gradient(135deg,#FFD15C,#F2A700);
  color:var(--bg-immersive);
  box-shadow:var(--shadow-gold);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 36px rgba(245,182,48,.32)}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-ghost{
  background:rgba(255,255,255,.04);
  border-color:rgba(255,255,255,.18);
  color:var(--text-main);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
}
.btn-ghost:hover{background:rgba(255,255,255,.09);transform:translateY(-2px);border-color:rgba(255,255,255,.3)}
.btn-ghost:active{transform:translateY(0)}
.btn:focus-visible,a:focus-visible,button:focus-visible{outline:2px solid var(--gold);outline-offset:3px}
i[class*="fa-"]{line-height:1}
#siteHeader{
  position:fixed;top:0;left:0;width:100%;z-index:1000;
  background:rgba(10,18,30,.74);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid transparent;
  transition:background .3s ease,border-color .3s ease,box-shadow .3s ease;
}
#siteHeader.scrolled{
  background:rgba(7,12,20,.9);
  border-bottom:1px solid var(--glass-border);
  box-shadow:0 10px 32px rgba(0,0,0,.3);
}
#siteHeader .container{position:relative}
.header-top-row{height:72px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.logo-area{display:inline-flex;align-items:center;gap:11px;padding:4px 8px 4px 4px;border-radius:14px;flex-shrink:0;transition:background .2s}
.logo-area:hover{background:rgba(255,255,255,.04)}
.logo-area .logo-icon{width:42px;height:42px;display:inline-flex;align-items:center;justify-content:center;border-radius:13px;background:rgba(245,182,48,.13);border:1px solid rgba(245,182,48,.3);flex-shrink:0}
.logo-area .logo-icon svg{width:22px;height:22px;fill:var(--gold)}
.logo-text{font-size:1.15rem;font-weight:700;letter-spacing:.01em;color:var(--text-main);line-height:1.1}
.logo-text small{display:block;font-size:.66rem;font-weight:400;color:var(--text-muted);letter-spacing:.08em;margin-top:3px}
.main-nav{display:flex;align-items:center;gap:6px;flex:1;justify-content:center}
.nav-link{
  display:inline-flex;align-items:center;padding:9px 15px;border-radius:var(--radius-pill);
  font-size:.93rem;font-weight:500;color:var(--text-muted);position:relative;transition:all .22s ease;line-height:1.2;
}
.nav-link:hover{color:var(--text-main);background:rgba(255,255,255,.06)}
.nav-link.active{color:var(--text-main)}
.nav-link.active::after{content:"";position:absolute;left:16%;right:16%;bottom:3px;height:2px;border-radius:999px;background:var(--gold);box-shadow:0 0 9px rgba(245,182,48,.65)}
.nav-cta{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:44px;padding:0 20px;border-radius:var(--radius-pill);margin-left:6px;
  background:linear-gradient(135deg,#FFD15C,#F2A700);color:#070C14;font-weight:700;font-size:.92rem;
  box-shadow:0 8px 22px rgba(245,182,48,.18);transition:all .22s ease;white-space:nowrap;
}
.nav-cta:hover{transform:translateY(-2px);box-shadow:0 12px 28px rgba(245,182,48,.26)}
.nav-cta:active{transform:translateY(0)}
.nav-toggle{
  width:44px;height:44px;display:none;align-items:center;justify-content:center;
  background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);border-radius:12px;
  color:var(--text-main);cursor:pointer;transition:background .2s;
}
.nav-toggle:hover{background:rgba(255,255,255,.1)}
.nav-toggle span{width:19px;height:2px;background:currentColor;display:block;position:relative;transition:background .2s}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:19px;height:2px;background:currentColor;transition:all .25s ease}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
#siteHeader.menu-open .nav-toggle span{background:transparent}
#siteHeader.menu-open .nav-toggle span::before{top:0;transform:rotate(45deg)}
#siteHeader.menu-open .nav-toggle span::after{top:0;transform:rotate(-45deg)}
/* Page hero */
.page-hero{
  position:relative;padding:100px 0 84px;overflow:hidden;
  border-bottom:1px solid var(--line);
  background:
    radial-gradient(ellipse at 82% 10%,rgba(61,139,255,.18),transparent 44%),
    radial-gradient(ellipse at 12% 28%,rgba(245,182,48,.08),transparent 38%);
}
.hero-bg{
  position:absolute;inset:0;background-image:url('/assets/images/backpic/back-1.webp');background-size:cover;background-position:center;opacity:.13;z-index:0;
}
.hero-mask{position:absolute;inset:0;background:linear-gradient(95deg,rgba(7,12,20,.96) 8%,rgba(10,18,30,.78) 55%,rgba(10,18,30,.56));z-index:1}
.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:1.08fr .92fr;gap:60px;align-items:center}
.hero-copy .breadcrumb{display:flex;align-items:center;gap:9px;font-size:.87rem;color:var(--text-muted);margin-bottom:22px}
.hero-copy .breadcrumb a{transition:color .2s}
.hero-copy .breadcrumb a:hover{color:var(--gold)}
.hero-copy .breadcrumb i{font-size:.7rem;opacity:.6}
.hero-chip{display:inline-flex;align-items:center;gap:8px;background:rgba(245,182,48,.1);border:1px solid rgba(245,182,48,.24);color:#FFD980;padding:7px 16px;border-radius:var(--radius-pill);font-size:.83rem;margin-bottom:18px}
.hero-copy h1{margin:14px 0 20px;max-width:640px}
.hero-copy h1 sup{font-size:.3em;vertical-align:12px;background:rgba(61,139,255,.16);color:#BFD9FF;padding:2px 8px;border-radius:999px;margin-left:6px;font-weight:500}
.hero-copy p.lead{color:var(--text-muted);font-size:1.04rem;max-width:590px;margin-bottom:32px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px}
.hero-visual{position:relative}
.hero-media{
  position:relative;border-radius:22px;overflow:hidden;border:1px solid rgba(255,255,255,.1);
  box-shadow:0 24px 64px rgba(0,0,0,.42);background:#0e1726;
}
.hero-media img{width:100%;aspect-ratio:5/4;object-fit:cover}
.hero-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 62%,rgba(7,12,20,.5))}
.hero-float{
  position:absolute;right:-12px;top:28px;z-index:3;
  background:rgba(15,23,42,.88);border:1px solid rgba(255,255,255,.14);border-radius:16px;padding:15px 18px;
  font-size:.84rem;box-shadow:0 18px 40px rgba(0,0,0,.3);backdrop-filter:blur(10px);display:flex;align-items:center;gap:10px;
}
.hero-float .dot{width:9px;height:9px;border-radius:50%;background:var(--success);box-shadow:0 0 10px rgba(47,211,162,.7)}
.hero-float strong{display:block;font-size:1rem}
.hero-float span{color:var(--text-muted)}
.hero-label{
  position:absolute;left:22px;bottom:22px;z-index:3;background:rgba(7,12,20,.7);border:1px solid rgba(255,255,255,.12);
  border-radius:14px;padding:12px 16px;color:#C9DBEC;font-size:.82rem;backdrop-filter:blur(8px);
  display:flex;align-items:center;gap:10px
}
.hero-label i{color:var(--gold);font-size:1.2rem}
/* Metrics */
.metrics-section{padding:34px 0;border-bottom:1px solid var(--line);background:rgba(7,12,20,.36)}
.metrics-row{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line);border-radius:20px;overflow:hidden;background:rgba(15,23,42,.55)}
.metric{padding:26px 26px;border-right:1px solid var(--line)}
.metric:last-child{border-right:0}
.metric i{color:var(--gold);font-size:1.3rem;margin-bottom:12px;display:inline-block}
.metric strong{display:block;font-size:1.6rem;color:#fff;line-height:1.4}
.metric span{color:var(--text-muted);font-size:.9rem}
/* Matrix table */
.matrix-intro{display:grid;grid-template-columns:1.2fr .8fr;gap:28px;margin-bottom:36px;align-items:end}
.matrix-intro .note-box{border-left:3px solid var(--gold);background:rgba(245,182,48,.06);padding:16px 20px;border-radius:10px;color:#C8D6E6;font-size:.92rem}
.table-scroll{overflow-x:auto;border-radius:var(--radius-lg);border:1px solid var(--line);background:rgba(15,23,42,.45);box-shadow:var(--shadow-card)}
.matrix-table{width:100%;min-width:850px;border-collapse:collapse;font-size:.94rem}
.matrix-table th,.matrix-table td{padding:17px 18px;text-align:left;vertical-align:top;border-bottom:1px solid var(--line)}
.matrix-table thead th{background:rgba(10,18,30,.75);font-weight:600;color:#DCE9F6;letter-spacing:.01em}
.matrix-table thead th:first-child{color:var(--gold)}
.matrix-table thead .kai-col-th{color:#FFD980}
.matrix-table tbody th{color:var(--text-main);font-weight:600;width:130px}
.matrix-table tbody tr:last-child td,.matrix-table tbody tr:last-child th{border-bottom:0}
.matrix-table tbody td{color:#B7C9DA}
.matrix-table tbody tr:hover td,.matrix-table tbody tr:hover th{background:rgba(255,255,255,.025)}
.matrix-table .kai-col{background:rgba(61,139,255,.07);border-left:1px solid rgba(61,139,255,.16);color:#D6E7FA}
.matrix-table tbody .kai-col-title{color:var(--gold);font-weight:700;background:rgba(245,182,48,.08);border-left:1px solid rgba(245,182,48,.22)}
.matrix-table .check{color:var(--success);margin-right:6px;font-size:.85rem}
.kai-marker{display:inline-flex;align-items:center;font-size:.8rem;font-weight:700;background:rgba(245,182,48,.15);color:#FFD980;border:1px solid rgba(245,182,48,.25);padding:2px 10px;border-radius:999px;margin-left:4px;vertical-align:1px}
/* Coordinate */
.coordinate-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.coordinate-item{background:var(--glass);border:1px solid var(--glass-border);border-radius:var(--radius-lg);padding:28px;position:relative;overflow:hidden;transition:transform .3s ease,border-color .3s ease,background .3s}
.coordinate-item::before{content:"";position:absolute;top:0;left:20px;right:20px;height:1px;background:linear-gradient(90deg,transparent,rgba(245,182,48,.55),transparent);opacity:0;transition:opacity .3s}
.coordinate-item:hover{transform:translateY(-4px);border-color:rgba(255,255,255,.16);background:rgba(23,32,50,.78)}
.coordinate-item:hover::before{opacity:1}
.coordinate-item .num{position:absolute;right:20px;top:16px;font-size:2rem;font-weight:800;color:rgba(255,255,255,.07);line-height:1}
.coordinate-item .icon{width:46px;height:46px;border-radius:14px;background:rgba(61,139,255,.13);color:#91C0FF;display:flex;align-items:center;justify-content:center;border:1px solid rgba(61,139,255,.2);font-size:1.15rem;margin-bottom:18px}
.coordinate-item h3{font-size:1.08rem;margin-bottom:9px}
.coordinate-item p{color:var(--text-muted);font-size:.92rem;margin:0}
/* Capability cards */
.capability-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.cap-card{
  background:var(--glass);border:1px solid var(--glass-border);border-radius:var(--radius-lg);
  padding:28px;position:relative;transition:transform .3s ease,border-color .3s,box-shadow .3s;
}
.cap-card:hover{transform:translateY(-4px);border-color:rgba(61,139,255,.24);box-shadow:0 18px 48px rgba(0,0,0,.25)}
.cap-icon{width:48px;height:48px;display:flex;align-items:center;justify-content:center;border-radius:14px;background:rgba(245,182,48,.1);border:1px solid rgba(245,182,48,.18);color:var(--gold);font-size:1.2rem;margin-bottom:16px}
.cap-card h3{margin-bottom:9px}
.cap-card p{color:var(--text-muted);font-size:.93rem;margin-bottom:16px}
.cap-list{list-style:none;padding:0}
.cap-list li{color:#c1d2e2;padding:7px 0 7px 24px;position:relative;font-size:.91rem;border-bottom:1px dashed rgba(148,163,184,.1)}
.cap-list li:last-child{border-bottom:0}
.cap-list li::before{content:"\f105";font-family:"Font Awesome 6 Free";font-weight:600;position:absolute;left:4px;top:7px;color:var(--gold);font-size:.9rem}
/* Selection band */
.selection-band{display:grid;grid-template-columns:1.05fr .95fr;gap:28px;align-items:stretch}
.select-card{border-radius:var(--radius-lg);padding:36px;border:1px solid var(--line);position:relative;background:var(--glass);border-top:3px solid rgba(245,182,48,.7);transition:transform .25s ease}
.select-card:nth-child(2){border-top-color:rgba(61,139,255,.7)}
.select-card:hover{transform:translateY(-3px)}
.select-card .badge{display:inline-flex;align-items:center;gap:8px;background:rgba(245,182,48,.12);border:1px solid rgba(245,182,48,.24);color:#FFD47A;border-radius:999px;padding:6px 14px;font-size:.8rem;margin-bottom:18px}
.select-card:nth-child(2) .badge{background:rgba(61,139,255,.12);border-color:rgba(61,139,255,.26);color:#A9CEFF}
.select-card h3{font-size:1.28rem;margin-bottom:14px}
.select-card p{color:var(--text-muted);font-size:.94rem;margin-bottom:20px}
.select-card ul{list-style:none;color:#C3D3E2;font-size:.93rem}
.select-card ul li{padding:7px 0 7px 26px;position:relative}
.select-card ul li::before{content:"\f00c";font-family:"Font Awesome 6 Free";font-weight:900;position:absolute;left:0;top:7px;color:var(--success);font-size:.8rem}
/* FAQ */
.faq-wrap{max-width:920px;margin:0 auto}
.faq-item{border:1px solid var(--line);border-radius:16px;background:rgba(15,23,42,.42);margin-bottom:14px;overflow:hidden;transition:border-color .2s,background .2s}
.faq-item.open{border-color:rgba(245,182,48,.25);background:rgba(15,23,42,.6)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;padding:19px 22px;background:transparent;border:0;color:var(--text-main);font-size:1.02rem;font-weight:600;text-align:left;cursor:pointer}
.faq-q .faq-arrow{flex-shrink:0;width:28px;height:28px;display:flex;align-items:center;justify-content:center;border-radius:50%;border:1px solid rgba(255,255,255,.14);color:var(--gold);transition:transform .3s ease,background .3s}
.faq-item.open .faq-arrow{transform:rotate(180deg);background:rgba(245,182,48,.14);border-color:rgba(245,182,48,.3)}
.faq-a{display:none;padding:0 24px 22px;color:#B7C9DC;font-size:.96rem}
.faq-item.open .faq-a{display:block}
.faq-a p{margin:0}
/* CTA */
.cta-wrap{padding:96px 0}
.cta-panel{
  position:relative;border-radius:26px;padding:62px 56px;overflow:hidden;
  background:
    linear-gradient(120deg,rgba(7,12,20,.96) 25%,rgba(10,18,30,.82)),
    url('/assets/images/coverpic/cover-2.webp');
  background-size:cover;background-position:center;
  border:1px solid rgba(255,255,255,.1);box-shadow:0 28px 80px rgba(0,0,0,.3);
}
.cta-panel::after{content:"";position:absolute;inset:0;background:radial-gradient(circle at 82% 15%,rgba(245,182,48,.12),transparent 36%);pointer-events:none}
.cta-grid{position:relative;z-index:2;display:grid;grid-template-columns:.95fr 1.05fr;gap:52px;align-items:center}
.cta-intro h2{margin-bottom:18px}
.cta-intro p{color:#BFD1E3;font-size:1rem;margin-bottom:22px;max-width:460px}
.cta-points{list-style:none}
.cta-points li{padding:7px 0 7px 28px;position:relative;color:#C6D7E7;font-size:.94rem}
.cta-points li::before{content:"\f164";font-family:"Font Awesome 6 Free";font-weight:900;position:absolute;left:0;top:8px;color:var(--gold);font-size:.9rem}
.apply-form{background:rgba(10,18,30,.78);border:1px solid rgba(255,255,255,.12);border-radius:20px;padding:30px;backdrop-filter:blur(12px)}
.apply-form h3{font-size:1.2rem;margin-bottom:20px}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.field{display:flex;flex-direction:column;gap:6px;margin-bottom:14px}
.field label{font-size:.86rem;color:#C7D5E4;font-weight:500}
.field input,.field select,.field textarea{
  width:100%;min-height:44px;border-radius:12px;border:1px solid rgba(255,255,255,.14);
  background:rgba(255,255,255,.04);color:var(--text-main);padding:10px 14px;transition:border-color .2s,background .2s;
}
.field textarea{min-height:82px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--gold);background:rgba(255,255,255,.06);box-shadow:0 0 0 3px rgba(245,182,48,.12)}
.field select option{background:#0e1726;color:#fff}
.form-message{margin-top:14px;display:none;border-radius:12px;padding:12px 14px;font-size:.9rem}
.form-message.success{display:flex;background:rgba(47,211,162,.1);border:1px solid rgba(47,211,162,.25);color:#8FF2D8}
.form-message.error{display:flex;background:rgba(248,113,113,.1);border:1px solid rgba(248,113,113,.25);color:#FBB6B6}
/* Footer */
.footer{background:var(--bg-immersive);border-top:1px solid var(--line);padding-top:70px}
.footer-inner{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.25fr;gap:44px;padding-bottom:46px}
.footer-logo-area{display:flex;align-items:center;gap:10px;font-size:1.2rem;font-weight:700;color:var(--text-main);margin-bottom:14px}
.footer-logo-area .logo-icon{width:40px;height:40px;display:flex;align-items:center;justify-content:center;background:rgba(245,182,48,.12);border:1px solid rgba(245,182,48,.24);border-radius:12px;flex-shrink:0}
.footer-logo-area svg{fill:var(--gold)}
.footer-desc{color:var(--text-muted);font-size:.9rem;line-height:1.8;margin:0}
.footer-column h4{font-size:1rem;color:#E4EDF6;margin-bottom:16px;font-weight:600}
.footer-links{display:flex;flex-direction:column;gap:8px}
.footer-link{color:var(--text-muted);font-size:.9rem;transition:color .2s,padding-left .2s}
.footer-link:hover{color:var(--gold);padding-left:5px}
.footer-contact{color:#B9CADC;font-size:.9rem;display:flex;flex-direction:column;gap:6px}
.footer-bottom{border-top:1px solid var(--line);padding:20px 0}
.footer-bottom-inner{display:flex;align-items:center;justify-content:space-between;gap:12px}
.footer-copyright{display:flex;gap:12px;align-items:center;color:#7F93A8;font-size:.84rem;flex-wrap:wrap}
.footer-copyright span:first-child::after{content:"|";margin-left:12px;color:rgba(148,163,184,.35)}
/* responsive */
@media (max-width:1024px){
  .metrics-row{grid-template-columns:repeat(2,1fr)}
  .metric:nth-child(2n){border-right:0}
  .metric:nth-child(-n+2){border-bottom:1px solid var(--line)}
  .metric:nth-child(2){border-right:0}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-visual{max-width:600px}
  .coordinate-grid{grid-template-columns:repeat(2,1fr)}
  .capability-grid{grid-template-columns:repeat(2,1fr)}
  .footer-inner{grid-template-columns:1fr 1fr;gap:36px}
}
@media (max-width:992px){
  body{padding-top:60px}
  .header-top-row{height:60px}
  .main-nav{
    display:none;position:absolute;top:52px;left:12px;right:12px;flex-direction:column;align-items:stretch;
    padding:14px;background:rgba(7,12,20,.96);backdrop-filter:blur(22px);border:1px solid rgba(255,255,255,.1);
    border-radius:18px;box-shadow:0 24px 60px rgba(0,0,0,.5);z-index:1000;
  }
  #siteHeader.menu-open .main-nav{display:flex;animation:menuDrop .28s ease}
  @keyframes menuDrop{from{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}
  .nav-toggle{display:inline-flex}
  .nav-link{height:46px;justify-content:center}
  .nav-cta{height:48px;margin:6px 0 0;justify-content:center}
  .nav-link.active::after{display:none}
  .section{padding:72px 0}
  .matrix-intro{grid-template-columns:1fr;gap:20px}
}
@media (max-width:768px){
  body{padding-top:60px}
  .section{padding:64px 0}
  .section-head{margin-bottom:34px}
  .page-hero{padding:70px 0 58px}
  .hero-copy p.lead{font-size:.97rem}
  .hero-actions .btn{width:100%}
  .hero-actions{flex-direction:column}
  .metrics-row{grid-template-columns:1fr 1fr}
  .metric{padding:20px;border-bottom:1px solid var(--line)}
  .metric:nth-child(2n){border-right:0}
  .metric:nth-child(3){border-bottom:0}
  .metric:nth-child(4){border-bottom:0}
  .coordinate-grid,.capability-grid{grid-template-columns:1fr}
  .selection-band{grid-template-columns:1fr}
  .cta-panel{padding:44px 24px;border-radius:20px}
  .cta-grid{grid-template-columns:1fr;gap:24px}
  .grid-2{grid-template-columns:1fr}
  .footer{padding-top:52px}
  .footer-inner{grid-template-columns:1fr 1fr;gap:32px 20px}
  .footer-copyright span:first-child::after{display:none}
  .footer-bottom-inner{flex-direction:column;align-items:flex-start}
  .cta-wrap{padding:64px 0}
}
@media (max-width:576px){
  .container{padding:0 18px}
  .metrics-section .metrics-row{grid-template-columns:1fr}
  .metric{padding:18px;border-right:0;border-bottom:1px solid var(--line)}
  .metric:last-child{border-bottom:0}
  .footer-inner{grid-template-columns:1fr}
  .footer-bottom-inner{gap:10px}
  .footer-copyright{font-size:.8rem}
  .matrix-table th,.matrix-table td{padding:12px 14px;font-size:.86rem}
  .coordinate-item,.cap-card{padding:24px}
  .apply-form{padding:22px}
  .form-message{font-size:.83rem}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.01ms !important;transition-duration:.01ms !important}
}

/* roulang page: category3 */
/* ===== Reset & Design Tokens ===== */
        :root {
            --bg-deep: #070C14;
            --bg-primary: #0A121E;
            --bg-soft: rgba(15, 23, 42, 0.5);
            --glass-bg: rgba(20, 28, 46, 0.66);
            --glass-border: rgba(255, 255, 255, 0.09);
            --accent-blue: #3D8BFF;
            --accent-gold: #F5B630;
            --text-main: #F3F7FB;
            --text-sub: #9DB0C3;
            --line: rgba(148, 163, 184, 0.14);
            --success: #2FD3A2;
            --warning: #F59E0B;
            --danger: #F87171;
            --radius-lg: 20px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --radius-pill: 999px;
            --shadow-card: 0 18px 40px rgba(0, 0, 0, 0.2);
            --shadow-btn: 0 8px 20px rgba(245, 182, 48, 0.18);
            --font-cn: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', 'Source Han Sans SC', 'Inter', 'Roboto', sans-serif;
            --transition-default: 0.25s ease;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-cn);
            background: var(--bg-primary);
            color: var(--text-main);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            color: var(--accent-blue);
            text-decoration: none;
            transition: var(--transition-default);
        }
        ul,
        ol {
            list-style: none;
        }
        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* ===== Utility ===== */
        section {
            scroll-margin-top: 84px;
        }
        .section-icon {
            width: 18px;
            height: 18px;
            flex: 0 0 18px;
        }
        .text-gradient-gold {
            background: linear-gradient(120deg, #F5B630, #F9D989);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(61, 139, 255, 0.12);
            border: 1px solid rgba(61, 139, 255, 0.25);
            color: #7FB1FF;
            padding: 5px 14px;
            border-radius: var(--radius-pill);
            font-size: 0.85rem;
            font-weight: 500;
            letter-spacing: 0.02em;
        }

        /* ===== Header ===== */
        #siteHeader {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: 72px;
            background: rgba(7, 12, 20, 0.6);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            transition: background 0.35s ease, border-color 0.35s ease;
        }
        #siteHeader.is-scrolled {
            background: rgba(7, 12, 20, 0.9);
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }
        .header-top-row {
            height: 72px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }
        .logo-area {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
            border-radius: 12px;
            padding: 6px 8px;
            background: transparent;
        }
        .logo-area:hover {
            background: rgba(255, 255, 255, 0.04);
        }
        .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: linear-gradient(135deg, rgba(61, 139, 255, 0.3), rgba(61, 139, 255, 0.08));
            border: 1px solid rgba(61, 139, 255, 0.34);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            box-shadow: 0 0 12px rgba(61, 139, 255, 0.08);
        }
        .logo-icon svg {
            width: 20px;
            height: 20px;
            fill: #9FC2FF;
        }
        .logo-text {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-main);
            letter-spacing: 0.01em;
            line-height: 1.2;
            display: flex;
            flex-direction: column;
        }
        .logo-text small {
            font-size: 0.65rem;
            color: var(--text-sub);
            font-weight: 400;
            letter-spacing: 0.25em;
            margin-top: 1px;
            text-transform: uppercase;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            margin-left: auto;
        }
        .main-nav .nav-link {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 10px 16px;
            color: var(--text-sub);
            font-size: 0.9rem;
            font-weight: 500;
            border-radius: var(--radius-pill);
            letter-spacing: 0.02em;
            transition: background 0.25s ease, color 0.25s ease;
            position: relative;
        }
        .main-nav .nav-link:hover {
            background: rgba(255, 255, 255, 0.07);
            color: var(--text-main);
        }
        .main-nav .nav-link.active {
            background: rgba(61, 139, 255, 0.16);
            color: var(--text-main);
        }
        .main-nav .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 18px;
            height: 2px;
            border-radius: 2px;
            background: var(--accent-gold);
        }
        .main-nav .nav-cta {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 44px;
            padding: 0 24px;
            background: linear-gradient(135deg, #F6B92C, #E3A615);
            color: #14100a;
            font-weight: 700;
            font-size: 0.92rem;
            border-radius: var(--radius-pill);
            white-space: nowrap;
            margin-left: 8px;
            box-shadow: 0 0 0 1px rgba(245, 182, 48, 0.3), var(--shadow-btn);
            transition: transform 0.2s ease, box-shadow 0.2s ease;
            border: none;
            cursor: pointer;
            line-height: 44px;
        }
        .main-nav .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 0 1px rgba(245, 182, 48, 0.5), 0 10px 28px rgba(245, 182, 48, 0.25);
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            width: 44px;
            height: 44px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 10px;
            cursor: pointer;
            padding: 0;
        }
        .nav-toggle span,
        .nav-toggle span::before,
        .nav-toggle span::after {
            display: block;
            width: 18px;
            height: 2px;
            background: var(--text-main);
            border-radius: 2px;
            content: '';
            transition: 0.3s ease;
        }
        .nav-toggle span {
            position: relative;
        }
        .nav-toggle span::before {
            position: absolute;
            top: -5px;
            left: 0;
        }
        .nav-toggle span::after {
            position: absolute;
            bottom: -5px;
            left: 0;
        }
        .nav-toggle.opened span {
            background: transparent;
        }
        .nav-toggle.opened span::before {
            transform: rotate(45deg);
            top: 0;
        }
        .nav-toggle.opened span::after {
            transform: rotate(-45deg);
            bottom: 0;
        }
        .header-mask {
            position: fixed;
            top: 72px;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0, 0, 0, 0.65);
            backdrop-filter: blur(4px);
            z-index: 990;
            opacity: 0;
            visibility: hidden;
            transition: opacity 0.25s ease, visibility 0.25s ease;
        }
        .header-mask.open {
            opacity: 1;
            visibility: visible;
        }

        /* ===== Hero (category3 - 图文场景) ===== */
        .page-hero {
            background: var(--bg-primary);
            padding: 155px 0 72px 0;
            position: relative;
            overflow: hidden;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            width: 560px;
            height: 560px;
            background: radial-gradient(closest-side, rgba(61, 139, 255, 0.16), transparent);
            top: -120px;
            right: -80px;
            pointer-events: none;
        }
        .page-hero::after {
            content: '';
            position: absolute;
            width: 420px;
            height: 420px;
            background: radial-gradient(closest-side, rgba(245, 182, 48, 0.08), transparent);
            bottom: -10px;
            left: 6%;
            pointer-events: none;
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: minmax(0, 1.2fr) minmax(280px, 0.8fr);
            gap: 56px;
            align-items: center;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.8rem;
            color: var(--text-sub);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--text-sub);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 400;
        }
        .breadcrumb a:hover {
            color: var(--text-main);
        }
        .breadcrumb span {
            display: inline-flex;
            align-items: center;
        }
        .breadcrumb .bc-sep {
            opacity: 0.4;
            margin: 0 1px;
        }
        .breadcrumb .bc-current {
            color: var(--text-main);
            font-weight: 500;
        }
        .hero-badge {
            margin-bottom: 18px;
        }
        .page-hero h1 {
            font-size: clamp(1.9rem, 4.6vw, 3.2rem);
            font-weight: 700;
            line-height: 1.2;
            letter-spacing: -0.01em;
            color: var(--text-main);
            margin-bottom: 20px;
        }
        .page-hero h1 .text-gradient-gold {
            white-space: nowrap;
        }
        .hero-desc {
            font-size: 1.02rem;
            color: var(--text-sub);
            line-height: 1.8;
            max-width: 580px;
            text-align: left;
            margin-bottom: 7px;
        }
        .hero-stat-row {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 22px;
            margin-top: 30px;
        }
        .hero-stat {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-sub);
            font-size: 0.85rem;
        }
        .hero-stat strong {
            color: var(--text-main);
            font-size: 1.6rem;
            font-weight: 700;
            letter-spacing: -0.02em;
            display: block;
            line-height: 1.1;
        }
        .hero-visual {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid rgba(255, 255, 255, 0.1);
            background: var(--glass-bg);
            min-height: 300px;
            box-shadow: var(--shadow-card);
        }
        .hero-visual img {
            width: 100%;
            height: 320px;
            object-fit: cover;
            display: block;
        }
        .hero-visual .overlay-card {
            position: absolute;
            left: 16px;
            right: 16px;
            bottom: 16px;
            background: rgba(10, 18, 30, 0.7);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border-radius: 14px;
            border: 1px solid rgba(255, 255, 255, 0.16);
            padding: 16px 16px;
            display: flex;
            gap: 12px;
            align-items: center;
        }
        .overlay-badge {
            background: rgba(245, 182, 48, 0.14);
            border: 1px solid rgba(245, 182, 48, 0.32);
            border-radius: 999px;
            height: 34px;
            padding: 0 16px;
            display: inline-flex;
            align-items: center;
            color: var(--accent-gold);
            font-size: 0.78rem;
            font-weight: 600;
            white-space: nowrap;
            letter-spacing: 0.02em;
            flex-shrink: 0;
        }
        .overlay-card p {
            color: var(--text-main);
            font-size: 0.88rem;
            line-height: 1.5;
        }

        /* ===== Trust strip ===== */
        .trust-band {
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
            background: rgba(0, 0, 0, 0.15);
            padding: 20px 0;
        }
        .trust-band-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 18px;
            flex-wrap: wrap;
        }
        .trust-item {
            display: flex;
            align-items: center;
            gap: 8px;
            color: var(--text-sub);
            font-size: 0.82rem;
        }
        .trust-dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent-blue);
            flex-shrink: 0;
        }
        .trust-dot.gold {
            background: var(--accent-gold);
        }
        .trust-dot.green {
            background: var(--success);
        }

        /* ===== Scene section (Zigzag 图文场景) ===== */
        .scene-section {
            padding: 100px 0;
            background: var(--bg-primary);
            position: relative;
        }
        .scene-section.center {
            background: var(--bg-primary);
        }
        .section-head {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 70px auto;
        }
        .section-head .label-kicker {
            display: inline-block;
            background: rgba(61, 139, 255, 0.11);
            color: #7fb7ff;
            font-size: 0.82rem;
            padding: 4px 14px;
            border-radius: var(--radius-pill);
            letter-spacing: 0.1em;
            margin-bottom: 14px;
            font-weight: 500;
            border: 1px solid rgba(61, 139, 255, 0.2);
        }
        .section-head h2 {
            font-size: clamp(1.6rem, 3vw, 2.3rem);
            font-weight: 700;
            line-height: 1.3;
            color: var(--text-main);
            margin-bottom: 14px;
            letter-spacing: -0.01em;
        }
        .section-head p {
            color: var(--text-sub);
            font-size: 1rem;
            line-height: 1.8;
            text-align: center;
        }

        .scene-item {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 56px;
            align-items: center;
            margin-bottom: 116px;
            scroll-margin-top: 100px;
        }
        .scene-item:last-child {
            margin-bottom: 0;
        }
        .scene-item.reverse .scene-image {
            order: 2;
        }
        .scene-item.reverse .scene-text {
            order: 1;
        }
        .scene-number {
            display: inline-flex;
            align-items: center;
            color: rgba(245, 182, 48, 0.7);
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.18em;
            text-transform: uppercase;
            margin-bottom: 16px;
        }
        .scene-number em {
            font-style: normal;
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent-gold);
            letter-spacing: -0.04em;
            margin-right: 8px;
        }
        .scene-text h2 {
            font-size: clamp(1.4rem, 2.4vw, 2rem);
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 16px;
            color: var(--text-main);
        }
        .scene-text h2 span {
            color: var(--accent-blue);
        }
        .scene-text p {
            color: var(--text-sub);
            font-size: 0.95rem;
            line-height: 1.9;
            margin-bottom: 21px;
            max-width: 540px;
        }
        .scene-points-list {
            display: grid;
            grid-template-columns: 1fr;
            gap: 12px;
            margin-bottom: 22px;
            max-width: 540px;
        }
        .scene-point {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-size: 0.88rem;
            color: #BDCCDD;
            line-height: 1.6;
        }
        .scene-point .point-icon {
            width: 16px;
            height: 16px;
            border-radius: 50%;
            flex-shrink: 0;
            background: rgba(47, 211, 162, 0.15);
            border: 1px solid rgba(47, 211, 162, 0.35);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            margin-top: 5px;
            color: var(--success);
            font-size: 10px;
            font-weight: 800;
        }
        .scene-tag-row {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            max-width: 540px;
            margin-bottom: 26px;
        }
        .scene-tag {
            display: inline-block;
            padding: 4px 12px;
            font-size: 0.76rem;
            color: #9DB0C3;
            border: 1px solid rgba(157, 176, 195, 0.2);
            border-radius: 999px;
            background: rgba(255, 255, 255, 0.02);
        }
        .scene-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            background: var(--bg-soft);
            width: 100%;
            height: 360px;
            border: 1px solid var(--glass-border);
            position: relative;
            box-shadow: var(--shadow-card);
        }
        .scene-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .scene-item:hover .scene-image img {
            transform: scale(1.03);
        }
        .scene-image .img-float-note {
            position: absolute;
            top: 14px;
            left: 14px;
            background: rgba(7, 12, 20, 0.6);
            backdrop-filter: blur(14px);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 10px;
            padding: 7px 13px;
            color: var(--text-main);
            font-size: 0.78rem;
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .img-float-note .swatch {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--success);
            box-shadow: 0 0 8px rgba(47, 211, 162, 0.6);
        }

        /* quote */
        .scene-quote {
            margin: 0 auto 90px auto;
            max-width: 760px;
            text-align: center;
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-left: 3px solid var(--accent-gold);
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            padding: 40px 48px 32px;
            position: relative;
        }
        .scene-quote p {
            color: #C6D3E2;
            font-size: 1.15rem;
            line-height: 1.9;
            font-weight: 500;
        }
        .scene-quote .quote-author {
            display: block;
            margin-top: 18px;
            color: var(--text-sub);
            font-size: 0.8rem;
        }

        /* ===== Scene grid (小型案例) ===== */
        .mini-scene-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 22px;
            margin-bottom: 40px;
        }
        .mini-scene-card {
            background: var(--glass-bg);
            border-radius: var(--radius-lg);
            border: 1px solid var(--glass-border);
            overflow: hidden;
            transition: transform 0.3s ease, background 0.35s ease;
            display: flex;
            flex-direction: column;
        }
        .mini-scene-card .mini-thumb {
            height: 140px;
            background: var(--bg-soft);
            overflow: hidden;
            display: block;
        }
        .mini-scene-card .mini-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .mini-scene-card:hover {
            transform: translateY(-4px);
            background: rgba(20, 28, 46, 0.82);
        }
        .mini-scene-card:hover .mini-thumb img {
            transform: scale(1.04);
        }
        .mini-scene-body {
            padding: 22px 22px 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .mini-scene-body .mini-cat {
            font-size: 0.76rem;
            color: var(--accent-gold);
            font-weight: 600;
            letter-spacing: 0.06em;
            margin-bottom: 10px;
            text-transform: uppercase;
        }
        .mini-scene-body h3 {
            font-size: 1.08rem;
            font-weight: 600;
            line-height: 1.5;
            margin-bottom: 14px;
            color: var(--text-main);
        }
        .mini-scene-body p {
            color: var(--text-sub);
            font-size: 0.85rem;
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 0;
        }

        /* ===== 规格摘要 / 场景清单 ===== */
        .scene-tag-panel {
            background: var(--bg-soft);
            border: 1px solid rgba(255, 255, 255, 0.07);
            border-radius: var(--radius-lg);
            padding: 42px 42px 34px;
            max-width: 940px;
            margin: 0 auto 50px auto;
            box-shadow: var(--shadow-card);
            scroll-margin-top: 100px;
        }
        .scene-tag-panel h2 {
            font-size: 1.45rem;
            color: var(--text-main);
            font-weight: 700;
            margin-bottom: 26px;
            text-align: center;
            line-height: 1.4;
        }
        .scene-tag-panel .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 12px;
        }
        .tag-cloud .tag-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(61, 139, 255, 0.1);
            border: 1px solid rgba(61, 139, 255, 0.18);
            border-radius: 999px;
            padding: 6px 14px;
            color: #B4CDF5;
            font-size: 0.78rem;
            cursor: default;
            transition: var(--transition-default);
        }
        .tag-cloud .tag-item:hover {
            background: rgba(61, 139, 255, 0.2);
            border-color: rgba(61, 139, 255, 0.4);
            color: #fff;
        }
        .tag-cloud .tag-item .dot {
            width: 5px;
            height: 5px;
            border-radius: 50%;
            background: var(--accent-gold);
        }

        /* ===== CTA ===== */
        .cta-panel {
            padding: 95px 0 90px;
            background: var(--bg-deep);
            position: relative;
        }
        .cta-panel::before {
            content: '';
            position: absolute;
            width: 700px;
            height: 500px;
            background: radial-gradient(closest-side, rgba(245, 182, 48, 0.12), transparent);
            top: 0px;
            right: -156px;
            pointer-events: none;
        }
        .cta-panel::after {
            content: '';
            position: absolute;
            width: 370px;
            height: 300px;
            background: radial-gradient(closest-side, rgba(61, 139, 255, 0.2), transparent);
            bottom: -90px;
            left: -90px;
            pointer-events: none;
        }
        .cta-wrap {
            max-width: 1020px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: 1.05fr 0.95fr;
            gap: 48px;
            align-items: center;
            position: relative;
            z-index: 2;
        }
        .cta-copy h2 {
            font-size: clamp(1.6rem, 2.6vw, 2.15rem);
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 18px;
            color: var(--text-main);
        }
        .cta-copy h2 span {
            color: var(--accent-gold);
        }
        .cta-copy p {
            color: var(--text-sub);
            line-height: 1.9;
            font-size: 0.95rem;
            margin-bottom: 22px;
        }
        .cta-btn-row {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-wrap: wrap;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            font-size: 0.9rem;
            font-weight: 600;
            border-radius: var(--radius-pill);
            transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
            border: none;
            cursor: pointer;
            line-height: 1.4;
            letter-spacing: 0.02em;
        }
        .btn-primary {
            background: linear-gradient(135deg, #F6B92C, #f0ac15);
            color: #14100a;
            min-height: 48px;
            box-shadow: 0 0 0 1px rgba(245, 182, 48, 0.25), var(--shadow-btn);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 0 1px rgba(245, 182, 48, 0.35), 0 12px 30px rgba(245, 182, 48, 0.3);
        }
        .btn-ghost {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(157, 176, 195, 0.35);
            color: #AFC3D6;
            min-height: 48px;
            backdrop-filter: blur(1px);
        }
        .btn-ghost:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(255, 255, 255, 0.4);
            color: var(--text-main);
            transform: translateY(-1px);
        }
        .cta-quick-metrics {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr;
            gap: 12px;
            margin-top: 28px;
            max-width: 460px;
        }
        .quick-metric {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-md);
            padding: 15px 10px;
            text-align: center;
        }
        .quick-metric .value {
            font-size: 1.18rem;
            font-weight: 700;
            color: var(--text-main);
        }
        .quick-metric .text {
            font-size: 0.7rem;
            color: var(--text-sub);
            margin-top: 3px;
        }
        .cta-contact-card {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-lg);
            box-shadow: 0 14px 26px rgba(0, 0, 0, 0.2);
            padding: 32px 30px 20px;
            scroll-margin-top: 100px;
        }
        .cta-contact-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 4px;
            color: var(--text-main);
        }
        .cta-contact-card .card-sub {
            font-size: 0.8rem;
            color: var(--text-sub);
            margin-bottom: 24px;
            display: block;
            line-height: 1.5;
        }
        .apply-form {
            display: grid;
            gap: 12px;
        }
        .form-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 12px;
        }
        .apply-form input,
        .apply-form select,
        .apply-form textarea {
            width: 100%;
            background: rgba(10, 18, 30, 0.6);
            border: 1px solid rgba(157, 176, 195, 0.2);
            color: var(--text-main);
            padding: 12px 16px;
            border-radius: var(--radius-md);
            font-size: 0.85rem;
            transition: border 0.25s ease, background 0.25s ease;
        }
        .apply-form input::placeholder,
        .apply-form textarea::placeholder {
            color: rgba(157, 176, 195, 0.6);
        }
        .apply-form input:focus,
        .apply-form select:focus,
        .apply-form textarea:focus {
            outline: 2px solid rgba(61, 139, 255, 0.5);
            border-color: rgba(61, 139, 255, 0.65);
            background: rgba(10, 18, 30, 0.85);
        }
        .apply-form select {
            appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' fill='none' stroke='%239DB0C3' stroke-width='1.4'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 14px center;
            padding-right: 34px;
        }
        .apply-form select option {
            background: #0A121E;
        }
        .apply-form textarea {
            resize: vertical;
            min-height: 80px;
        }
        .apply-form .btn-primary {
            margin-top: 4px;
        }
        .form-note {
            display: flex;
            align-items: center;
            gap: 8px;
            color: rgba(157, 176, 195, 0.65);
            font-size: 0.73rem;
            margin-top: 8px;
        }
        .form-note .icon-tip {
            width: 14px;
            height: 14px;
            flex-shrink: 0;
        }
        .form-success-hint {
            background: rgba(47, 211, 162, 0.09);
            border: 1px solid rgba(47, 211, 162, 0.24);
            color: var(--success);
            border-radius: var(--radius-md);
            padding: 9px 14px;
            font-size: 0.8rem;
            display: none;
        }
        .apply-form.show-success .form-success-hint {
            display: block;
        }
        .apply-form.show-success .btn-primary {
            background: var(--success);
            box-shadow: 0 0 0 1px rgba(47, 211, 162, 0.2), 0 8px 20px rgba(47, 211, 162, 0.15);
            color: #07110e;
        }

        /* ===== FAQ ===== */
        .faq-panel {
            padding: 95px 0;
            background: var(--bg-primary);
        }
        .faq-wrap {
            max-width: 860px;
            margin: 0 auto;
        }
        .section-kicker {
            text-align: center;
            margin-bottom: 52px;
        }
        .section-kicker h2 {
            font-size: clamp(1.6rem, 2.8vw, 2.1rem);
            margin-bottom: 14px;
            font-weight: 700;
            line-height: 1.3;
        }
        .section-kicker p {
            color: var(--text-sub);
            font-size: 0.95rem;
            max-width: 640px;
            margin: 0 auto;
        }
        .faq-list {
            border-top: 1px solid rgba(157, 176, 195, 0.12);
        }
        .faq-item {
            border-bottom: 1px solid rgba(157, 176, 195, 0.14);
            background: transparent;
            transition: background 0.25s ease;
            border-radius: 0;
        }
        .faq-btn {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 20px;
            width: 100%;
            background: transparent;
            border: none;
            cursor: pointer;
            padding: 22px 6px;
            color: var(--text-main);
            font-size: 1rem;
            font-weight: 600;
            letter-spacing: 0.01em;
            text-align: left;
        }
        .faq-btn:hover {
            background: rgba(255, 255, 255, 0.02);
        }
        .faq-icon {
            position: relative;
            width: 26px;
            height: 26px;
            flex-shrink: 0;
            border-radius: 50%;
            border: 1.5px solid rgba(157, 176, 195, 0.4);
            transition: 0.3s ease;
        }
        .faq-icon::before {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 10px;
            height: 1.5px;
            background: var(--text-sub);
            border-radius: 2px;
            transition: 0.3s ease;
        }
        .faq-icon::after {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            height: 10px;
            width: 1.5px;
            background: var(--text-sub);
            border-radius: 2px;
            transition: 0.3s ease;
        }
        .faq-item.open .faq-icon {
            border-color: var(--accent-gold);
        }
        .faq-item.open .faq-icon::after {
            transform: translate(-50%, -50%) rotate(90deg);
            background: var(--accent-gold);
            opacity: 0;
        }
        .faq-item.open .faq-icon::before {
            background: var(--accent-gold);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
        }
        .faq-answer .answer-inner {
            padding: 0 6px 22px 6px;
            color: var(--text-sub);
            line-height: 1.8;
            font-size: 0.91rem;
        }
        .faq-answer .answer-inner p {
            max-width: 100%;
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--bg-deep);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 70px 0 24px;
        }
        .footer-inner {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
            gap: 42px;
            margin-bottom: 44px;
        }
        .footer-logo-area {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 1.25rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-logo-area .logo-icon {
            width: 34px;
            height: 34px;
            border-radius: 9px;
            background: rgba(61, 139, 255, 0.2);
            border: 1px solid rgba(61, 139, 255, 0.3);
            display: inline-flex;
            align-items: center;
            justify-content: center;
        }
        .footer-logo-area svg {
            width: 18px;
            height: 18px;
            fill: #9FC2FF;
        }
        .footer-desc {
            font-size: 0.83rem;
            color: rgba(154, 178, 203, 0.7);
            line-height: 1.8;
            margin-bottom: 0;
            max-width: 360px;
        }
        .footer-column h4 {
            color: #C7DBEE;
            font-size: 0.84rem;
            text-transform: uppercase;
            letter-spacing: 0.14em;
            font-weight: 600;
            margin-bottom: 18px;
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            align-items: flex-start;
            gap: 12px;
        }
        .footer-link {
            font-size: 0.84rem;
            color: rgba(154, 178, 203, 0.72);
            line-height: 1.5;
            transition: var(--transition-default);
        }
        .footer-link:hover {
            color: #fff;
            padding-left: 3px;
        }
        .footer-contact div {
            font-size: 0.82rem;
            color: rgba(154, 178, 203, 0.72);
            margin-bottom: 12px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding-top: 22px;
        }
        .footer-bottom-inner {
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 14px;
            align-items: center;
        }
        .footer-copyright {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            font-size: 0.8rem;
            color: rgba(154, 178, 203, 0.5);
        }
        .footer-copyright span:last-child {
            opacity: 0.6;
            margin-left: 4px;
        }

        /* ===== Focus states ===== */
        .nav-link:focus-visible,
        .btn:focus-visible,
        .main-nav .nav-cta:focus-visible,
        .nav-toggle:focus-visible,
        .faq-btn:focus-visible {
            outline: 2px solid rgba(61, 139, 255, 0.45);
            outline-offset: 3px;
        }
        .footer-link:focus-visible {
            outline: 1px solid rgba(255, 255, 255, 0.3);
            outline-offset: 4px;
            border-radius: 4px;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1200px) {
            .container {
                padding-left: 20px;
                padding-right: 20px;
            }
        }
        @media (max-width: 992px) {
            #siteHeader {
                height: 70px;
            }
            .header-top-row {
                height: 70px;
            }
            .main-nav {
                position: fixed;
                top: 0;
                right: 0;
                width: min(420px, 88vw);
                height: 100vh;
                height: 100dvh;
                z-index: 1000;
                background: rgba(7, 12, 20, 0.84);
                backdrop-filter: blur(22px);
                -webkit-backdrop-filter: blur(22px);
                border-left: 1px solid rgba(255, 255, 255, 0.06);
                flex-direction: column;
                align-items: flex-start;
                justify-content: flex-start;
                padding: 80px 28px 40px 28px;
                gap: 4px;
                box-shadow: -20px 0 45px rgba(0, 0, 0, 0.25);
                transform: translateX(105%);
                transition: transform 0.35s ease;
                border-radius: 20px 0 0 20px;
                margin-left: 0;
            }
            .main-nav.open {
                transform: translateX(0%);
            }
            .main-nav .nav-link {
                width: 100%;
                height: 48px;
                border-radius: 10px;
                padding: 0 16px;
                justify-content: flex-start;
            }
            .main-nav .nav-link.active {
                background: rgba(61, 139, 255, 0.14);
            }
            .main-nav .nav-cta {
                margin-left: 0;
                margin-top: 20px;
                width: 100%;
                height: 50px;
                line-height: 50px;
                border-radius: 10px;
            }
            .nav-toggle {
                display: flex;
            }
            .mobile-brand-above {
                display: none;
            }
            .page-hero {
                padding: 130px 0 56px 0;
            }
            .page-hero .container {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .hero-desc {
                max-width: 100%;
            }
            .hero-visual {
                min-height: 230px;
            }
            .hero-visual img {
                height: 280px;
            }
            .scene-section {
                padding: 80px 0;
            }
            .scene-item {
                grid-template-columns: 1fr;
                gap: 32px;
                margin-bottom: 80px;
            }
            .scene-item.reverse .scene-image {
                order: 0;
            }
            .scene-item.reverse .scene-text {
                order: 1;
            }
            .scene-image {
                height: 300px;
            }
            .mini-scene-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .cta-wrap {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .cta-contact-card {
                padding: 24px 20px 16px;
            }
            .cta-panel {
                padding: 70px 0;
            }
            .footer-inner {
                grid-template-columns: 1fr 1fr;
                gap: 36px;
            }
            .section-head {
                margin-bottom: 52px;
            }
            .scene-quote {
                margin-bottom: 70px;
                padding: 32px 24px 26px;
            }
        }
        @media (max-width: 768px) {
            .trust-band-inner {
                justify-content: flex-start;
                gap: 12px 18px;
            }
            .hero-stat-row {
                gap: 14px;
            }
            .trust-item {
                font-size: 0.8rem;
            }
            .cta-quick-metrics {
                grid-template-columns: repeat(3, 1fr);
                gap: 8px;
            }
        }
        @media (max-width: 576px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            body {
                font-size: 15px;
            }
            #siteHeader {
                height: 60px;
            }
            .header-top-row {
                height: 60px;
            }
            .main-nav {
                width: min(420px, 94vw);
                padding-left: 22px;
                padding-right: 22px;
            }
            .logo-area {
                padding: 4px 6px;
                gap: 8px;
            }
            .logo-icon {
                width: 32px;
                height: 32px;
                border-radius: 9px;
            }
            .logo-icon svg {
                width: 18px;
                height: 18px;
            }
            .logo-text {
                font-size: 1.1rem;
            }
            .logo-text small {
                letter-spacing: 0.22em;
                font-size: 0.6rem;
            }
            .page-hero {
                padding: 116px 0 48px 0;
            }
            .page-hero h1 {
                font-size: 1.75rem;
            }
            .hero-visual {
                min-height: 180px;
            }
            .hero-visual img {
                height: 190px;
            }
            .hero-visual .overlay-card {
                flex-direction: column;
                align-items: flex-start;
                left: 10px;
                right: 10px;
                bottom: 10px;
            }
            .overlay-badge {
                height: 26px;
                padding: 0 10px;
                font-size: 0.72rem;
            }
            .scene-section {
                padding: 70px 0;
            }
            .section-head {
                margin-bottom: 44px;
            }
            .section-head p {
                font-size: 0.9rem;
            }
            .scene-number {
                font-size: 0.72rem;
            }
            .scene-number em {
                font-size: 1.7rem;
            }
            .scene-text h2 {
                font-size: 1.4rem;
            }
            .scene-image {
                height: 220px;
            }
            .mini-scene-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .mini-scene-card .mini-thumb {
                height: 180px;
            }
            .scene-quote {
                padding: 28px 18px 22px;
                margin-bottom: 60px;
                text-align: left;
                font-size: 0.95rem;
            }
            .scene-quote p {
                font-size: 1rem;
            }
            .scene-tag-panel {
                padding: 34px 20px 24px;
            }
            .scene-tag-panel h2 {
                font-size: 1.2rem;
            }
            .cta-wrap {
                gap: 24px;
            }
            .cta-panel {
                padding: 60px 0;
            }
            .cta-copy h2 {
                font-size: 1.5rem;
            }
            .cta-btn-row {
                flex-direction: column;
                align-items: stretch;
            }
            .cta-btn-row .btn {
                width: 100%;
            }
            .cta-contact-card {
                margin-left: -4px;
                margin-right: -4px;
            }
            .form-row {
                grid-template-columns: 1fr;
                gap: 10px;
            }
            .footer {
                padding: 56px 0 24px;
            }
            .footer-inner {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .footer-column {
                width: 100%;
            }
            .footer-bottom {
                margin-top: 4px;
            }
            .footer-bottom-inner {
                flex-direction: column;
                align-items: flex-start;
            }
            .footer-copyright {
                font-size: 0.75rem;
            }
            .cta-quick-metrics {
                grid-template-columns: repeat(3, 1fr);
                gap: 6px;
            }
            .quick-metric .value {
                font-size: 1rem;
            }
        }
        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation-duration: 0.01ms !important;
                transition-duration: 0.01ms !important;
                scroll-behavior: auto !important;
            }
        }

        /* 移动端菜单 header mask 跟随 */
        .main-nav .nav-link.active::after {
            display: none;
        }
        .main-nav .nav-link.active {
            position: relative;
        }
        .main-nav .nav-link.active::before {
            content: '';
            position: absolute;
            left: 16px;
            bottom: 10px;
            width: 14px;
            height: 2px;
            background: var(--accent-gold);
            border-radius: 2px;
        }
        @media (min-width: 992px) {
            .main-nav .nav-link.active::before {
                display: none;
            }
            .main-nav .nav-link.active::after {
                display: block;
                content: '';
                position: absolute;
                bottom: 2px;
                left: 50%;
                transform: translateX(-50%);
                width: 18px;
                height: 2px;
                border-radius: 2px;
                background: var(--accent-gold);
            }
        }
        @media (min-width: 992px) {
            .main-nav {
                display: flex;
            }
            .main-nav.open {
                padding: 0;
                transform: none;
                background: none;
                border: none;
                box-shadow: none;
                width: auto;
                height: auto;
            }
            .main-nav .nav-cta {
                margin-top: 0;
                width: auto;
                height: 44px;
                line-height: 44px;
                border-radius: var(--radius-pill);
            }
        }