:root{--primary-blue:#1890ff;--primary-blue-dark:#1677cc;--primary-blue-light:#40a9ff;--gray-50:#fafafa;--gray-100:#f5f5f5;--gray-200:#e5e5e5;--gray-300:#d4d4d4;--gray-400:#a3a3a3;--gray-500:#737373;--gray-600:#525252;--gray-700:#404040;--gray-800:#262626;--gray-900:#171717;--color-primary:var(--primary-blue);--color-primary-dark:var(--primary-blue-dark);--color-background:var(--gray-100);--color-surface:#fff;--color-text:#333;--color-text-secondary:#666;--color-text-light:#999;--color-border:#ddd;--spacing-xs:.5rem;--spacing-sm:.75rem;--spacing-md:1rem;--spacing-lg:1.5rem;--spacing-xl:2rem;--spacing-2xl:2.5rem;--radius-sm:.375rem;--radius-md:.5rem;--radius-lg:.75rem;--radius-xl:1rem}*{box-sizing:border-box;margin:0;padding:0}html{background-color:var(--color-background);color:var(--color-text);font-family:-apple-system,BlinkMacSystemFont,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;line-height:1.6}body{font-size:16px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;min-height:100vh}.container{flex-direction:column;margin:0 auto;max-width:400px;min-height:100vh;padding:40px 20px;text-align:center;width:100%}.app-icon,.container{align-items:center;display:flex;justify-content:center}.app-icon{background:var(--color-primary);border-radius:16px;height:80px;margin:0 auto 20px;overflow:hidden;width:80px}.app-icon img{border-radius:16px;height:100%;-o-object-fit:cover;object-fit:cover;width:100%}.title{color:var(--color-text);font-size:22px;font-weight:500;margin-bottom:10px}.desc{color:var(--color-text-secondary);font-size:14px;margin-bottom:30px}.btn{border:none;border-radius:var(--radius-md);cursor:pointer;display:block;font-size:16px;margin-bottom:12px;max-width:300px;padding:14px 0;text-decoration:none;transition:all .2s ease;width:100%}.btn-primary{background:var(--color-primary);color:#fff}.btn-primary:hover{background:var(--color-primary-dark);transform:translateY(-1px)}.btn-secondary{background:var(--color-surface);border:1px solid var(--color-border);color:var(--color-text)}.btn-secondary:hover{background:var(--gray-50);border-color:var(--color-primary)}.tip-box{background:var(--color-surface);border-radius:12px;box-shadow:0 2px 8px #0000001a;margin-bottom:20px;max-width:300px;padding:30px 20px}.tip-title{color:var(--color-text);font-size:18px;font-weight:500;margin-bottom:20px}.tip-step{align-items:flex-start;display:flex;margin-bottom:16px;text-align:left}.step-num{align-items:center;background:var(--color-primary);border-radius:50%;color:#fff;display:flex;flex-shrink:0;font-size:12px;font-weight:500;height:24px;justify-content:center;margin-right:12px;width:24px}.step-text{color:var(--color-text);font-size:14px;line-height:24px}.arrow-icon{margin:20px auto;width:60px}.arrow-icon svg{height:auto;width:100%}.footer{color:var(--color-text-light);font-size:12px;margin-top:40px;text-align:center}@media(max-width:480px){.container{padding:20px 15px}.app-icon{height:70px;width:70px}.title{font-size:20px}.tip-box{padding:25px 15px}}