/* --- Estilos globales --- */
body {
    font-family: "Helvetica Neue", Helvetica, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "微软雅黑", Arial, sans-serif;
    background-color: #f0f2f5;
    color: #333;
    margin: 0;
}

a {
    text-decoration: none;
    color: inherit;
}

.container {
    max-width: 1170px;
    margin: 0 auto;
    padding: 0 15px;
}

.row {
    display: flex;
    flex-wrap: wrap;
    margin-left: -15px;
    margin-right: -15px;
}

.pull-left {
    float: left;
}

.pull-right {
    float: right;
}

.text-center {
    text-align: center;
}

.clearfix::after {
    display: block;
    content: "";
    clear: both;
}


/* --- Cabecera --- */
.nav {
    background-color: #383838;
    color: #ccc;
    padding: 15px 0;
    font-size: 14px;
    line-height: 20px;
}

.nav-right {
    cursor: pointer;
}


/* --- Contenido principal --- */
.content-title {
    font-size: 28px;
    margin-top: 40px;
    margin-bottom: 30px;
    font-weight: 500;
}

.check-chose-block {
    padding: 0 15px;
    box-sizing: border-box;
    margin-bottom: 30px;
}

.index-brand {
    padding: 20px;
    border-radius: 8px;
    color: white;
    min-height: 280px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.index-brand h3 {
    margin-top: 10px;
    margin-bottom: 20px;
    font-size: 22px;
}

.check-chose-block-mind {
    list-style-type: none;
    padding-left: 0;
    font-size: 14px;
    line-height: 2.2;
    flex-grow: 1;
}

/* Colores para los bloques de selección */
.brand-primary { background-color: #428bca; }
.brand-success { background-color: #5cb85c; }
.brand-danger  { background-color: #d9534f; }
.brand-info    { background-color: #5bc0de; }

/* Botones */
.btn {
    display: inline-block;
    padding: 10px 12px;
    margin-bottom: 0;
    font-size: 14px;
    font-weight: 400;
    line-height: 1.42857143;
    text-align: center;
    white-space: nowrap;
    vertical-align: middle;
    cursor: pointer;
    border: 1px solid transparent;
    border-radius: 4px;
    box-sizing: border-box;
}

.btn-default {
    color: #333;
    background-color: #fff;
    border-color: #ccc;
    width: 100%;
}

.btn-white {
    color: #333;
    background-color: #fff;
    border-color: #fff;
    padding: 8px 30px;
    margin-top: 10px;
}


/* --- Sección de anuncios --- */
#adsBox {
    margin-top: 20px;
}

.ads-paper {
    background-color: #383838;
    color: #fff;
    border-radius: 8px;
    padding: 30px 40px;
    margin-bottom: 30px;
    position: relative;
    width: 100%;
}

.ads-paper a {
    display: block;
}

.ads-title {
    font-size: 24px;
    margin-top: 0;
    margin-bottom: 10px;
}

.ads-content {
    color: #ccc;
    font-size: 14px;
    margin: 0;
}

.ads-float-word {
    position: absolute;
    top: 10px;
    right: 10px;
    background-color: #f0f2f5;
    color: #383838;
    padding: 2px 8px;
    font-size: 12px;
    border-radius: 4px;
}


/* --- Pie de página --- */
.footer {
    background-color: #383838;
    color: #ccc;
    padding: 20px 0;
    margin-top: 40px;
}

.copyright {
    font-size: 13px;
}


/* --- Diseño responsivo (simulando Bootstrap) --- */
/* Pantallas pequeñas (tabletas) */
@media (min-width: 768px) {
    .col-sm-6 {
        width: 50%;
    }
}

/* Pantallas medianas (escritorios) */
@media (min-width: 992px) {
    .col-md-3 {
        width: 25%;
    }
}