/* ==========================================================
   fCalc Web Articles - Estilo Universal
   Modo: Light + moderno estudiante
   Fuente: Montserrat
   Acento: Azul petróleo #0044AA
   ========================================================== */

@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@300;400;500;600;700&display=swap');

body {
    font-family: 'Montserrat', sans-serif;
    margin: 0;
    padding: 0;
    background: #FFFFFF;
    color: #222222;
    line-height: 1.6;
    font-size: 18px; /* desktop base */
}

@media (max-width: 600px) {
    body {
        font-size: 16px; /* mobile base */
    }
}

.container {
    width: 100%;
    padding: 20px 24px;
    box-sizing: border-box;
}

/* TITULOS */
h1, h2, h3 {
    color: #0044AA;
    margin-top: 30px;
    margin-bottom: 15px;
    font-weight: 600;
}

/* Intro */
.intro {
    margin-top: 10px;
    font-weight: 400;
}

/* Formula */
.formula {
    font-size: 22px;
    text-align: center;
    margin: 25px 0;
    font-weight: 500;
}

/* VARIABLES */
.variables li {
    margin-bottom: 6px;
}

/* IMAGEN DE FORMULA */
.formula-image img {
    max-width: 400px;
    max-height: 260px;   /* 🔴 NUEVO */
    width: auto;
    height: auto;
    display: block;
    margin: 0 auto;
}
@media (max-width: 600px) {
    .formula-image img {
        max-width: 280px;
        max-height: 200px;
    }
}

/* DESCARGA APP */
.download-app {
    margin-top: 40px;
    text-align: center;
}

.download-app img {
    height: 50px;
    margin: 10px;
    vertical-align: middle;
}

.googleplay-logo {
    cursor: pointer;
}

/* Links generales */
a {
    color: #0044AA;
    text-decoration: none;
    font-weight: 500;
}

a:hover {
    text-decoration: underline;
}

/* Separadores */
hr {
    margin: 40px 0;
    border: none;
    border-top: 1px solid #dddddd;
}