:root {
            --primary-color: rgb(37,99,235);
            --primary-hover: rgb(29,78,216);
            --primary-light: rgba(37,99,235,0.1);
            --text-main: #1e293b;
            --text-muted: #64748b;
            --bg-body: #f8fafc;
            --border-color: #e2e8f0;
            --container-width: 1200px;
        }
        * { margin: 0; padding: 0; box-sizing: border-box; }
        body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif; background-color: var(--bg-body); color: var(--text-main); line-height: 1.6; }
        a { text-decoration: none; color: inherit; }
        ul { list-style: none; }
        img { max-width: 100%; height: auto; display: block; }
        .container { max-width: var(--container-width); margin: 0 auto; padding: 0 20px; }
        
        
        .site-header { background: #fff; box-shadow: 0 1px 3px rgba(0,0,0,0.05); position: sticky; top: 0; z-index: 100; }
        .header-inner { display: flex; align-items: center; justify-content: space-between; height: 70px; }
        .logo { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; }
        .logo img { display: block; height: 36px; width: auto; max-width: 160px; object-fit: contain; flex-shrink: 0; }
        .logo span { display: inline-block; font-size: 20px; font-weight: 800; line-height: 1; color: var(--text-main); white-space: nowrap; }
        .desktop-nav ul { display: flex; gap: 30px; }
        .desktop-nav a { font-weight: 500; font-size: 15px; color: var(--text-main); transition: color 0.3s; }
        .desktop-nav a:hover { color: var(--primary-color); }
        .header-actions { display: flex; align-items: center; gap: 15px; }
        .btn-outline { border: 1px solid var(--primary-color); color: var(--primary-color); padding: 10px 24px; border-radius: 6px; font-weight: 600; display: inline-block; }
        .menu-toggle { display: none; background: none; border: none; font-size: 24px; cursor: pointer; color: var(--text-main); }
        
        .drawer-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.5); z-index: 999; opacity: 0; visibility: hidden; transition: 0.3s; }
        .drawer-overlay.active { opacity: 1; visibility: visible; }
        .drawer-menu { position: fixed; top: 0; left: -300px; bottom: 0; width: 280px; background: #fff; z-index: 1000; transition: 0.3s; box-shadow: 2px 0 8px rgba(0,0,0,0.1); display: flex; flex-direction: column; }
        .drawer-menu.active { left: 0; }
        .drawer-header { padding: 20px; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--border-color); }
        .drawer-close { background: none; border: none; font-size: 24px; cursor: pointer; color: var(--text-muted); }
        .drawer-nav { padding: 20px; overflow-y: auto; flex: 1; }
        .drawer-nav li { margin-bottom: 15px; }
        .drawer-nav a { display: block; font-size: 16px; font-weight: 500; color: var(--text-main); padding: 8px 0; border-bottom: 1px dashed var(--border-color); }

        
        .dl-hero { padding: 80px 0; background: #fff; }
        .dl-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
        .dl-content h1 { font-size: 42px; font-weight: 800; margin-bottom: 20px; line-height: 1.2; }
        .dl-content p { font-size: 18px; color: var(--text-muted); margin-bottom: 40px; }
        .dl-buttons { display: flex; gap: 20px; margin-bottom: 30px; }
        .dl-btn { display: flex; align-items: center; gap: 15px; background: #111; color: #fff; padding: 15px 30px; border-radius: 12px; transition: transform 0.3s, background 0.3s; }
        .dl-btn:hover { transform: translateY(-3px); background: #333; }
        .dl-btn svg { width: 32px; height: 32px; }
        .dl-btn span { display: block; font-size: 12px; color: #aaa; line-height: 1.2; }
        .dl-btn strong { display: block; font-size: 18px; font-weight: 600; color: #fff; }
        .dl-image { position: relative; }
        .dl-image img { border-radius: 20px; box-shadow: 0 25px 50px rgba(0,0,0,0.15); max-width: 80%; margin: 0 auto; }
        
        .steps { padding: 80px 0; }
        .steps-header { text-align: center; margin-bottom: 50px; }
        .steps-header h2 { font-size: 32px; font-weight: 700; margin-bottom: 15px; }
        .step-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; position: relative; }
        .step-card { background: #fff; padding: 40px 30px; border-radius: 12px; text-align: center; border: 1px solid var(--border-color); position: relative; z-index: 2; }
        .step-icon { width: 64px; height: 64px; background: var(--primary-light); color: var(--primary-color); border-radius: 50%; display: flex; align-items: center; justify-content: center; margin: 0 auto 20px; font-size: 24px; font-weight: bold; }
        .step-card h3 { font-size: 20px; font-weight: 700; margin-bottom: 15px; }
        .step-card p { color: var(--text-muted); font-size: 15px; }

        .site-footer { background: #0f172a; color: #cbd5e1; padding: 60px 0 30px; margin-top: 40px; }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
        .footer-brand .logo span { color: #fff; }
        .footer-desc { margin-top: 20px; font-size: 14px; line-height: 1.8; color: #94a3b8; max-width: 300px; }
        .footer-widget h4 { color: #fff; font-size: 16px; font-weight: 600; margin-bottom: 20px; }
        .footer-links li { margin-bottom: 10px; }
        .footer-links a { font-size: 14px; color: #94a3b8; transition: color 0.3s; }
        .footer-links a:hover { color: var(--primary-color); }
        .footer-bottom { border-top: 1px solid #1e293b; padding-top: 30px; display: flex; justify-content: space-between; align-items: center; font-size: 14px; color: #64748b; }

        @media (max-width: 768px) {
            .desktop-nav, .header-actions { display: none; }
            .menu-toggle { display: block; }
            .dl-grid { grid-template-columns: 1fr; text-align: center; }
            .dl-buttons { flex-direction: column; align-items: center; }
            .step-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; }
        }