* { box-sizing: border-box; }
    body { font-family: system-ui, -apple-system, sans-serif; background: #f5f5f5; margin: 0; padding: 16px; }
    .container { max-width: 400px; margin: 0 auto; }
    .header { text-align: center; margin-bottom: 30px; }
    .header h1 { font-size: 26px; color: #333; margin-bottom: 8px; }
    .header .phone { font-size: 18px; color: #007aff; font-weight: 500; }
    .grid { display: flex; flex-direction: column; gap: 16px; }
    .nav-card {
        background: white;
        border-radius: 24px;
        padding: 20px;
        box-shadow: 0 4px 12px rgba(0,0,0,0.05);
        display: flex;
        align-items: center;
        justify-content: space-between;
        text-decoration: none;
        color: #333;
        border: 1px solid #eee;
    }
    .nav-card .left { display: flex; align-items: center; gap: 12px; }
    .nav-card .icon { font-size: 28px; }
    .nav-card .title { font-size: 18px; font-weight: 500; }
    .nav-card .arrow { color: #999; font-size: 20px; }
    .nav-card:hover { background: #fafafa; }
    .section-title { font-size: 16px; font-weight: 500; color: #666; margin: 24px 0 12px 0; }
    .footer { text-align: center; margin-top: 40px; color: #999; font-size: 14px; }