/* ===== 后台登录页样式 ===== */
html, body {
    height: 100%;
    margin: 0;
}

body {
    background: linear-gradient(135deg, #1a2a3a 0%, #16333d 50%, #10262b 100%);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
                 "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-wrap {
    width: 100%;
    padding: 20px;
    box-sizing: border-box;
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-box {
    width: 100%;
    max-width: 380px;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 12px 40px rgba(0, 0, 0, .28);
    padding: 36px 32px 28px;
    box-sizing: border-box;
}

.login-header {
    text-align: center;
    margin-bottom: 26px;
}

.login-header h2 {
    margin: 0 0 8px;
    font-size: 22px;
    font-weight: 600;
    color: #1d2129;
    letter-spacing: .5px;
}

.login-header p {
    margin: 0;
    font-size: 13px;
    color: #86909c;
}

.login-box .layui-form-item {
    margin-bottom: 18px;
}

.login-box .layui-input {
    height: 42px;
    line-height: 42px;
    border-radius: 4px;
}

.captcha-row {
    display: flex;
    gap: 10px;
    align-items: stretch;
}

.captcha-input {
    flex: 1;
}

.captcha-img {
    width: 120px;
    height: 42px;
    border-radius: 4px;
    cursor: pointer;
    border: 1px solid #e6e6e6;
    background: #f5f7fa;
    flex-shrink: 0;
    object-fit: cover;
}

.login-box .layui-btn-fluid {
    height: 42px;
    line-height: 42px;
    font-size: 15px;
    letter-spacing: 3px;
    border-radius: 4px;
    background-color: #16baaa;
    border-color: #16baaa;
}

.login-box .layui-btn-fluid:hover {
    background-color: #14a99a;
    border-color: #14a99a;
}

.login-tips {
    text-align: center;
    font-size: 12px;
    color: #86909c;
    margin-top: 4px;
}