:root {
            --primary: #6C5CE7;
            --primary-hover: #5A4BD1;
            --dark: #0f172a;
            --light: #f8fafc;
            --text: #475569;
            --border: #e2e8f0;
            --radius: 16px;
        }
        *{margin:0;padding:0;box-sizing:border-box;}
        body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;color:var(--text);background:#fff;line-height:1.6;}
        header{border-bottom:1px solid var(--border);position:sticky;top:0;background:rgba(255,255,255,0.85);backdrop-filter:blur(12px);z-index:100;}
        .nav-container{max-width:1200px;margin:0 auto;display:flex;justify-content:space-between;align-items:center;padding:16px 20px;}
        .logo a{display:flex;align-items:center;gap:10px;font-size:22px;font-weight:700;color:var(--primary);text-decoration:none;}
        .logo svg{width:32px;height:32px;fill:var(--primary);}
        .nav-links a{color:var(--text);text-decoration:none;margin-left:25px;font-size:15px;font-weight:500;transition:all 0.2s;padding:6px 12px;border-radius:6px;}
        .nav-links a:hover,.nav-links a.active{color:#fff;background-color:var(--primary);}

        section{padding:80px 20px;}
        .container{max-width:1200px;margin:0 auto;}
        .section-title{font-size:36px;color:var(--dark);font-weight:800;letter-spacing:-0.5px;text-align:center;}
        .section-subtitle{font-size:16px;color:#64748b;text-align:center;max-width:700px;margin:15px auto 50px;}

        /* 英雄区域 */
        .about-hero{background:radial-gradient(120% 120% at 50% 0%, rgba(108,92,231,0.05) 0%, rgba(255,255,255,0) 100%);text-align:center;}
        .about-hero .container{display:flex;flex-direction:column;align-items:center;}
        .hero-icon{width:100px;height:100px;background:var(--primary);color:#fff;border-radius:28px;display:flex;align-items:center;justify-content:center;margin-bottom:30px;box-shadow:0 15px 30px rgba(108,92,231,0.25);}
        .hero-icon svg{width:60px;height:60px;fill:#fff;}

        /* 双栏介绍 */
        .intro-grid{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center;margin:60px 0;}
        .intro-text h2{font-size:28px;color:var(--dark);margin-bottom:20px;font-weight:700;}
        .intro-text p{font-size:15px;color:var(--text);margin-bottom:18px;line-height:1.8;}
        .intro-image{background:linear-gradient(135deg, rgba(108,92,231,0.1) 0%, rgba(108,92,231,0.02) 100%);border-radius:var(--radius);padding:40px;text-align:center;border:1px solid var(--border);}
        .intro-image .big-icon{font-size:80px;margin-bottom:15px;}
        .intro-image .caption{font-size:14px;color:var(--primary);font-weight:600;}

        /* 数据卡片 */
        .stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin:60px 0;}
        .stat-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:30px 20px;text-align:center;transition:all 0.3s;}
        .stat-card:hover{transform:translateY(-5px);box-shadow:0 12px 25px rgba(0,0,0,0.03);}
        .stat-number{font-size:38px;font-weight:800;color:var(--primary);line-height:1;}
        .stat-label{font-size:14px;color:#64748b;margin-top:10px;}

        /* 发展历程时间轴 */
        .timeline{position:relative;max-width:800px;margin:60px auto;padding-left:40px;}
        .timeline::before{content:'';position:absolute;left:18px;top:0;bottom:0;width:3px;background:linear-gradient(to bottom, var(--primary), #a29bfe);border-radius:3px;}
        .tl-item{position:relative;margin-bottom:40px;padding:24px;background:#fff;border:1px solid var(--border);border-radius:var(--radius);}
        .tl-item::before{content:'';position:absolute;left:-28px;top:28px;width:12px;height:12px;background:var(--primary);border:3px solid #fff;border-radius:50%;box-shadow:0 0 0 3px rgba(108,92,231,0.2);}
        .tl-year{font-size:14px;font-weight:700;color:var(--primary);margin-bottom:6px;}
        .tl-desc{font-size:15px;color:var(--text);}

        /* 团队价值观卡片 */
        .values-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
        .value-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:32px 24px;text-align:center;transition:0.3s;}
        .value-card:hover{border-color:#cbd5e1;box-shadow:0 15px 30px rgba(0,0,0,0.03);}
        .value-icon{font-size:42px;margin-bottom:18px;}
        .value-card h3{font-size:19px;color:var(--dark);margin-bottom:12px;}
        .value-card p{font-size:14.5px;color:#64748b;}

        /* 联系我们 */
        .contact-box{background:var(--light);border-radius:var(--radius);padding:40px;text-align:center;border:1px solid var(--border);margin-top:40px;}
        .contact-box p{font-size:15px;color:var(--text);margin-bottom:25px;}
        .contact-links{display:flex;justify-content:center;gap:20px;flex-wrap:wrap;}
        .contact-link{display:inline-flex;align-items:center;gap:8px;background:#fff;padding:12px 24px;border-radius:50px;text-decoration:none;color:var(--dark);font-weight:500;border:1px solid var(--border);transition:0.2s;}
        .contact-link:hover{background:var(--primary);color:#fff;border-color:var(--primary);}

        footer{background:var(--dark);color:#94a3b8;padding:70px 20px 40px;font-size:14px;border-top:1px solid #1e293b;}
        .footer-grid{max-width:1200px;margin:0 auto;display:grid;grid-template-columns:2fr repeat(4,1fr);gap:40px;padding-bottom:40px;border-bottom:1px solid #1e293b;}
        .footer-brand h4{color:#fff;font-size:18px;margin-bottom:12px;}
        .footer-column h5{color:#fff;font-size:15px;margin-bottom:16px;font-weight:600;}
        .footer-column ul{list-style:none;}
        .footer-column li{margin-bottom:10px;}
        .footer-column a{color:#94a3b8;text-decoration:none;transition:color 0.2s;}
        .footer-column a:hover{color:#fff;}
        .footer-bottom{max-width:1200px;margin:30px auto 0;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:15px;}

        @media(max-width:768px){
            .intro-grid,.stats-grid,.values-grid{grid-template-columns:1fr;}
            .nav-container{flex-direction:column;gap:15px;}
            .nav-links a{margin-left:10px;font-size:14px;}
            .timeline{padding-left:30px;}
            .tl-item::before{left:-22px;}
        }