/* ===== 公共基础样式 ===== */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background: linear-gradient(135deg, #f5f7fa 0%, #e4e8ec 100%);
    min-height: 100vh;
    padding-top: 80px;
    padding-bottom: 60px;
}

.container {
    margin: 0 auto;
    padding: 0 20px;
}