:root{
            --safe-primary:#0b5fff;
            --safe-primary-dark:#0847c4;
            --safe-accent:#00d4aa;
            --safe-dark:#0d1b2a;
            --safe-darker:#08111c;
            --safe-text:#1f2937;
            --safe-muted:#5b6b7c;
            --safe-bg:#ffffff;
            --safe-bg-alt:#f5f8ff;
            --safe-border:#e6ecf5;
            --safe-radius:20px;
            --safe-shadow:0 12px 30px rgba(11,95,255,.08);
            --safe-transition:.3s cubic-bezier(.4,0,.2,1);
            --font-sans:'Inter','PingFang SC','Microsoft YaHei','Segoe UI',sans-serif;
            /* 机器人页面额外变量 */
            --bot-accent:#7c3aed;
            --bot-accent-light:#ede9fe;
            --bot-gradient:linear-gradient(135deg,#0d1b2a 0%,#1e1b4b 100%);
            --bot-code-bg:#1e1e2e;
            --bot-code-text:#e6e6e6;
        }
        *{margin:0;padding:0;box-sizing:border-box}
        html{scroll-behavior:smooth}
        body{font-family:var(--font-sans);color:var(--safe-text);background:var(--safe-bg);line-height:1.6;overflow-x:hidden}
        a{text-decoration:none;color:inherit}
        img{max-width:100%;display:block}
        .site{display:flex;flex-direction:column;min-height:100vh}
        .section-wrap{max-width:1200px;margin:0 auto;padding:0 24px}

        /* Header (与首页一致，新增网站地图链接) */
        .site-header{background:rgba(255,255,255,.9);backdrop-filter:blur(12px);position:sticky;top:0;z-index:100;border-bottom:1px solid var(--safe-border)}
        .nav-shell{display:flex;align-items:center;justify-content:space-between;max-width:1200px;margin:0 auto;padding:12px 24px;gap:20px}
        .brand{display:flex;align-items:center;gap:8px;font-weight:800;font-size:1.5rem;color:var(--safe-dark);}
        .brand img{height:40px;width:auto}
        .main-nav{display:flex;align-items:center;gap:28px}
        .main-nav a{font-weight:600;color:var(--safe-text);position:relative;padding:6px 0;transition:var(--safe-transition)}
        .main-nav a::after{content:"";position:absolute;left:0;bottom:0;width:0;height:2px;background:var(--safe-primary);transition:var(--safe-transition)}
        .main-nav a:hover::after,.main-nav a.active::after{width:100%}
        .main-nav a.active{color:var(--safe-primary)}
        .menu-button{display:none;background:none;border:none;cursor:pointer;width:32px;height:32px;flex-direction:column;justify-content:center;gap:5px}
        .menu-button span{display:block;width:22px;height:2px;background:var(--safe-text);border-radius:2px;transition:var(--safe-transition)}
		.download-buttons{
    display:flex;
    flex-wrap:wrap;
    gap:14px;
}

.download-button{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    font-weight:600;
    padding:12px 22px;
    border-radius:50px;
    border:1.5px solid transparent;   /* 基础边框，配合内联样式设置颜色 */
    transition:var(--safe-transition);
    box-shadow:0 8px 20px rgba(13,27,42,.15);
    cursor:pointer;
    text-align:center;
}

.download-button:hover{
    transform:translateY(-2px);
    box-shadow:0 12px 24px rgba(11,95,255,.25);
}

        /* 机器人页面 Hero 特有 */
        .robot-hero{background:var(--bot-gradient);color:#fff;padding:80px 0 70px;position:relative;overflow:hidden}
        .robot-hero::before{content:"";position:absolute;top:-20%;right:-10%;width:600px;height:600px;background:radial-gradient(circle,rgba(124,58,237,.25) 0%,transparent 70%);border-radius:50%;pointer-events:none}
        .robot-hero::after{content:"";position:absolute;bottom:-30%;left:-10%;width:500px;height:500px;background:radial-gradient(circle,rgba(0,212,170,.15) 0%,transparent 70%);border-radius:50%;pointer-events:none}
        .robot-hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:50px;align-items:center;position:relative;z-index:2}
        .robot-hero-kicker{display:inline-block;background:rgba(255,255,255,.1);backdrop-filter:blur(8px);color:#c4b5fd;font-weight:700;font-size:14px;padding:8px 18px;border-radius:40px;margin-bottom:18px;letter-spacing:.5px}
        .robot-hero-heading{font-size:clamp(2.2rem,4.5vw,3.4rem);line-height:1.2;font-weight:800;margin-bottom:20px}
        .robot-hero-heading span{color:var(--safe-accent)}
        .robot-hero-text{font-size:1.15rem;color:rgba(255,255,255,.85);max-width:560px;margin-bottom:30px}
        .robot-hero-media img{border-radius:24px;box-shadow:0 30px 60px rgba(0,0,0,.3)}

        /* 机器人核心功能 */
        .features-section{padding:90px 0;background:var(--safe-bg)}
        .features-section h2{font-size:clamp(1.8rem,3.5vw,2.6rem);font-weight:800;color:var(--safe-dark);text-align:center;margin-bottom:20px}
        .features-subtitle{text-align:center;color:var(--safe-muted);max-width:700px;margin:0 auto 50px;font-size:1.05rem}
        .features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:28px}
        .feature-card{background:var(--safe-bg-alt);border:1px solid var(--safe-border);border-radius:var(--safe-radius);padding:32px 26px;transition:var(--safe-transition);display:flex;flex-direction:column;gap:16px}
        .feature-card:hover{transform:translateY(-6px);box-shadow:var(--safe-shadow);border-color:var(--bot-accent)}
        .feature-icon{font-size:2.5rem;line-height:1;}
        .feature-card h3{font-size:1.4rem;font-weight:700;color:var(--safe-dark)}
        .feature-card p{color:var(--safe-muted);font-size:.98rem}

        /* API 沙箱演示 */
        .api-section{padding:90px 0;background:var(--safe-bg-alt)}
        .api-section h2{font-size:clamp(1.8rem,3.5vw,2.6rem);font-weight:800;color:var(--safe-dark);text-align:center;margin-bottom:20px}
        .api-subtitle{text-align:center;color:var(--safe-muted);max-width:700px;margin:0 auto 50px;font-size:1.05rem}
        .code-window{max-width:800px;margin:0 auto;background:var(--bot-code-bg);border-radius:16px;box-shadow:0 20px 40px rgba(0,0,0,.2);overflow:hidden;border:1px solid rgba(255,255,255,.1)}
        .code-header{background:#2a2a3e;padding:12px 20px;display:flex;align-items:center;gap:8px;border-bottom:1px solid rgba(255,255,255,.05)}
        .dot{width:12px;height:12px;border-radius:50%;display:inline-block}
        .dot.red{background:#ff5f56}
        .dot.yellow{background:#ffbd2e}
        .dot.green{background:#27c93f}
        .code-title{margin-left:12px;color:#a0a0b0;font-size:0.9rem;font-family:monospace}
        .code-body{padding:24px;color:var(--bot-code-text);font-family:'Fira Code','SF Mono','Consolas',monospace;font-size:0.95rem;line-height:1.8;overflow-x:auto}
        .code-body .comment{color:#6b7280}
        .code-body .keyword{color:#c792ea}
        .code-body .string{color:#c3e88d}
        .code-body .function{color:#82aaff}

        /* 机器人开发流程 */
        .flow-section{padding:90px 0;background:var(--safe-bg)}
        .flow-section h2{font-size:clamp(1.8rem,3.5vw,2.6rem);font-weight:800;color:var(--safe-dark);text-align:center;margin-bottom:50px}
        .flow-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:30px}
        .flow-step{background:var(--safe-bg-alt);border:1px solid var(--safe-border);border-radius:var(--safe-radius);padding:32px 24px;text-align:center;position:relative;transition:var(--safe-transition)}
        .flow-step:hover{transform:translateY(-6px);box-shadow:var(--safe-shadow)}
        .step-num{width:48px;height:48px;border-radius:50%;background:var(--bot-accent);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:1.3rem;margin:0 auto 20px}
        .flow-step h3{font-size:1.3rem;font-weight:700;color:var(--safe-dark);margin-bottom:12px}
        .flow-step p{color:var(--safe-muted);font-size:.95rem}

        /* 自动化场景矩阵 */
        .scenario-section{padding:90px 0;background:var(--safe-bg-alt)}
        .scenario-section h2{font-size:clamp(1.8rem,3.5vw,2.6rem);font-weight:800;color:var(--safe-dark);text-align:center;margin-bottom:20px}
        .scenario-subtitle{text-align:center;color:var(--safe-muted);max-width:700px;margin:0 auto 50px;font-size:1.05rem}
        .scenario-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:24px}
        .scenario-card{background:#fff;border-radius:var(--safe-radius);padding:28px 22px;border:1px solid var(--safe-border);transition:var(--safe-transition);text-align:center}
        .scenario-card:hover{transform:translateY(-5px);box-shadow:var(--safe-shadow)}
        .scenario-icon{font-size:2.5rem;margin-bottom:14px}
        .scenario-card h3{font-size:1.2rem;font-weight:700;color:var(--safe-dark);margin-bottom:8px}
        .scenario-card p{color:var(--safe-muted);font-size:.9rem}

        /* 安全特性 */
        .security-section{padding:90px 0;background:var(--safe-bg)}
        .security-section h2{font-size:clamp(1.8rem,3.5vw,2.6rem);font-weight:800;color:var(--safe-dark);text-align:center;margin-bottom:50px}
        .security-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:28px}
        .security-card{background:var(--safe-bg-alt);border-radius:var(--safe-radius);padding:32px 24px;text-align:center;border:1px solid var(--safe-border);transition:var(--safe-transition)}
        .security-card:hover{transform:translateY(-5px);box-shadow:var(--safe-shadow)}
        .security-icon{font-size:2.5rem;margin-bottom:16px}
        .security-card h3{font-size:1.3rem;font-weight:700;color:var(--safe-dark);margin-bottom:10px}
        .security-card p{color:var(--safe-muted);font-size:.95rem}

        /* 开发资源 */
        .resources-section{padding:90px 0;background:var(--safe-bg-alt)}
        .resources-section h2{font-size:clamp(1.8rem,3.5vw,2.6rem);font-weight:800;color:var(--safe-dark);text-align:center;margin-bottom:50px}
        .resources-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:28px}
        .resource-card{background:#fff;border-radius:var(--safe-radius);padding:28px 22px;border:1px solid var(--safe-border);transition:var(--safe-transition);text-align:center}
        .resource-card:hover{transform:translateY(-5px);box-shadow:var(--safe-shadow)}
        .resource-icon{font-size:2.5rem;margin-bottom:14px}
        .resource-card h3{font-size:1.2rem;font-weight:700;color:var(--safe-dark);margin-bottom:8px}
        .resource-card p{color:var(--safe-muted);font-size:.9rem}

        /* FAQ */
        .faq-section{padding:90px 0;background:var(--safe-bg)}
        .faq-section h2{font-size:clamp(1.8rem,3.5vw,2.6rem);font-weight:800;color:var(--safe-dark);text-align:center;margin-bottom:50px}
        .faq-list{max-width:800px;margin:0 auto}
        .faq-item{border-bottom:1px solid var(--safe-border);padding:20px 0}
        .faq-question{font-weight:700;color:var(--safe-dark);font-size:1.1rem;cursor:pointer;display:flex;justify-content:space-between;align-items:center}
        .faq-question::after{content:"+";font-size:1.5rem;color:var(--safe-muted)}
        .faq-answer{color:var(--safe-muted);margin-top:10px;display:none}
        .faq-item.active .faq-answer{display:block}
        .faq-item.active .faq-question::after{content:"−"}

        /* 底部下载区 */
        .cta-section{padding:90px 0;background:var(--bot-gradient);color:#fff}
        .cta-grid{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:center}
        .cta-copy h2{font-size:clamp(1.8rem,3.5vw,2.6rem);font-weight:800;margin-bottom:26px}
        .cta-copy .download-buttons{display:flex;flex-wrap:wrap;gap:14px}
        .cta-copy .download-button{display:inline-flex;align-items:center;gap:8px;background:#fff;color:var(--safe-dark);font-weight:600;padding:12px 22px;border-radius:50px;transition:var(--safe-transition);box-shadow:0 10px 30px rgba(0,0,0,.3)}
        .cta-copy .download-button:hover{background:var(--safe-accent);color:var(--safe-dark);transform:translateY(-2px)}
        .cta-media img{border-radius:24px;box-shadow:0 30px 60px rgba(0,0,0,.3)}

        /* Footer (与首页一致) */
        .site-footer{background:var(--safe-darker);color:#aebdce;padding:60px 0 20px}
        .footer-wrap{max-width:1200px;margin:0 auto;padding:0 24px}
        .footer-logo{display:flex;align-items:center;gap:8px;font-weight:800;font-size:1.5rem;color:#fff;margin-bottom:32px;}
        .footer-logo img{height:40px;margin-bottom:0;}
        .footer-cols{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:32px;margin-bottom:40px}
        .footer-cols h2{font-size:1.1rem;font-weight:700;color:#fff;margin-bottom:16px}
        .footer-cols p{display:flex;flex-direction:column;gap:8px}
        .footer-cols a{color:#aebdce;transition:var(--safe-transition)}
        .footer-cols a:hover{color:var(--safe-primary)}
        .footer-cols .mail-link{color:var(--safe-accent)}
        .site-footer small{display:block;text-align:center;padding-top:20px;border-top:1px solid rgba(255,255,255,.08);color:#64748b;font-size:.85rem}

        /* Responsive */
        @media(max-width:900px){
            .robot-hero-grid,.cta-grid{grid-template-columns:1fr;text-align:center}
            .robot-hero-text{margin-left:auto;margin-right:auto}
            .download-buttons{justify-content:center}
            .robot-hero-media img{margin:0 auto}
        }
        @media(max-width:768px){
            .main-nav{display:none;position:absolute;top:64px;left:0;right:0;background:#fff;flex-direction:column;padding:20px;box-shadow:0 20px 40px rgba(0,0,0,.08);border-bottom:1px solid var(--safe-border);gap:12px}
            .main-nav.open{display:flex}
            .menu-button{display:flex}
            .nav-shell{flex-wrap:wrap}
        }