html, body {
    margin: 0 !important;
    padding: 0 !important;
    border: none !important;
    font-size: 15px;
    position: relative;
    min-height: 100vh;
}

@media (min-width: 768px) {
  html {
    font-size: 16px;
  }
}

body {
    min-height: 100vh;
    background: linear-gradient(115deg, #b8c6db, #f5f7fa, #a9c9ff, #ffbbec);
    color: #212529;
}

.text-danger {
    color: #0d6efd !important;
}

a {
    color: #3d7cc6;
}

.btn-primary {
    background: linear-gradient(90deg, #fc466b, #3f5efb);
    color: white;
    padding: 0.6rem 0.7rem;
    border: none;
    border-radius: 30px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    box-shadow: 0px 4px 10px rgba(0, 0, 0, 0.15);
}

.btn-primary:hover {
    background: linear-gradient(360deg, #3f5efb, #fc466b);
    transform: scale(1.05);
    box-shadow: 0px 6px 20px rgba(0, 0, 0, 0.3);
}

.form-control {
    background: linear-gradient(91deg, #46d8fc1a, #fbc13f1a);
    font-size: 15px;
    border: 2px solid #2e82dcad;
    border-radius: 18px;
    padding: 1px 3px;
    box-shadow: inset 0 1px 3px rgb(231 153 231 / 74%), 0 0 10px rgb(58 213 183);
}

@media (max-width: 768px) {
    .form-control {
        font-size: 11.5px;
        padding: 2px 2px;
        border-radius: 12px;
        box-shadow: inset 0 1px 2px rgb(231 153 231 / 50%), 0 0 6px rgb(58 213 183);
    }
}

.text-start {
    display: inline-block;
    position: relative;
    cursor: pointer;
    font-size: 15px;
    border: 2px solid #e564648a;
    border-radius: 12px;
    padding: 5px 20px;
}

.display-6 {
    font-size: 21px;
}

.pt-2{
    transform: scale(0.90); /* 放大到 110%，缩小到 90% 可用 scale(0.9) */
    background: linear-gradient(91deg, #46d8fc1a, #fbc13f1a);
    position: relative;
    padding: 10px 6px;
    margin-top: 5px;
    cursor: pointer;
    font-size: 15px; /* 自定义字体大小 */
    background-clip: padding-box;
    /* 渐变边框，带有光泽 */
    border: 2px solid transparent;
    border-image: linear-gradient(to right, #36d1dcad, #5b86e5ab, #8e44ada8) 1;
    border: 3px solid #2e82dcad; /* 边框颜色和宽度 */
    border-radius: 18px; /* 圆角 */
    padding: 20px 04px; /* 内边距，确保内容不紧贴边框 */

    /* 添加内阴影，使输入框更立体 */
    box-shadow: inset 0 1px 3px rgb(255 255 255), 
                0 0 10px rgb(58 213 183);
}

body > .container,
body > main,
body > div.container {
    padding-top: 5px; /* 导航栏高度+你想要的间隙，比如24px */
}