:root {
    --primary: #122d58;
    --secondary: #d3112e;
    --dark: #1a1a1a;
    --light: #f8f9fa;
    --gray: #6c757d;
}

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

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.65;
    color: var(--dark);
    background: #ffffff;
}

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

img {
    max-width: 100%;
    height: auto;
    display: block;
}

.container {
    width: 92%;
    max-width: 760px;
    margin: 0 auto;
    padding: 0 12px;
}

header {
    background: #ffffff;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
    max-width: 1280px;
    width: 92%;
    margin: 0 auto;
}

.logo {
    display: flex;
    align-items: center;
    color: var(--primary);
    gap: 0.75rem;
}

.logo-img {
    width: 64px;
    height: auto;
}

.logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.25;
}

.logo-name {
    font-size: 1.35rem;
    font-weight: 800;
}

.logo-tagline {
    font-size: 0.65rem;
    font-weight: 600;
    letter-spacing: 0.02em;
}

.nav-back {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--primary);
    transition: color 0.2s;
}

.nav-back:hover {
    color: var(--secondary);
}

.article-wrap {
    padding: 2.5rem 0 4rem;
}

.article-meta {
    font-size: 0.9rem;
    color: var(--gray);
    margin-bottom: 0.75rem;
}

.article-title {
    font-size: clamp(1.65rem, 4vw, 2.15rem);
    color: var(--primary);
    line-height: 1.25;
    margin-bottom: 1.25rem;
}

.article-lead {
    font-size: 1.1rem;
    color: var(--gray);
    margin-bottom: 1.5rem;
}

.article-cover {
    border-radius: 12px;
    overflow: hidden;
    margin-bottom: 2rem;
    box-shadow: 0 8px 28px rgba(18, 45, 88, 0.12);
}

.article-cover img {
    width: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
}

.article-body p {
    margin-bottom: 1rem;
}

.article-body h2 {
    font-size: 1.25rem;
    color: var(--primary);
    margin: 1.75rem 0 0.75rem;
}

.article-cta {
    margin-top: 2.75rem;
    padding: 1.65rem 1.45rem;
    background: #f8f9ff;
    border: 1px solid rgba(18, 45, 88, 0.14);
    border-left: 4px solid var(--secondary);
    border-radius: 12px;
    box-shadow: 0 4px 14px rgba(18, 45, 88, 0.06);
}

.article-cta-heading {
    font-size: 1.2rem;
    color: var(--primary);
    line-height: 1.3;
    margin: 0 0 0.65rem;
}

.article-cta-text {
    color: var(--gray);
    font-size: 0.98rem;
    line-height: 1.6;
    margin: 0 0 1.15rem;
}

.article-cta-link {
    display: inline-block;
    font-weight: 600;
    font-size: 0.95rem;
    background: var(--primary);
    color: #fff;
    padding: 12px 26px;
    border-radius: 50px;
    transition: background 0.2s, transform 0.2s, box-shadow 0.2s;
}

.article-cta-link:hover {
    background: #0e2447;
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 8px 18px rgba(18, 45, 88, 0.22);
}

.site-footer-mini {
    text-align: center;
    padding: 2rem 1rem;
    background: #111;
    color: #888;
    font-size: 0.9rem;
}

.site-footer-mini a {
    color: var(--secondary);
}

.site-footer-mini a:hover {
    text-decoration: underline;
}

/* Blog index (articulos/index.html) */
.container-wide {
    max-width: 920px;
}

.blog-index-intro {
    padding: 2.5rem 0 0.5rem;
}

.blog-index-intro h1 {
    font-size: clamp(1.65rem, 4vw, 2rem);
    color: var(--primary);
    line-height: 1.25;
    margin-bottom: 0.65rem;
}

.blog-index-intro p {
    color: var(--gray);
    font-size: 1.02rem;
    max-width: 42rem;
}

.article-index-list {
    list-style: none;
    padding: 1.5rem 0 3rem;
}

.article-index-item {
    display: grid;
    grid-template-columns: minmax(100px, 160px) 1fr;
    gap: 1.25rem;
    align-items: start;
    padding: 1.35rem 0;
    border-bottom: 1px solid #e9ecef;
}

.article-index-item:first-of-type {
    border-top: 1px solid #e9ecef;
}

.article-index-thumb {
    border-radius: 10px;
    overflow: hidden;
    background: #e9ecef;
    aspect-ratio: 16 / 10;
    box-shadow: 0 4px 14px rgba(18, 45, 88, 0.08);
}

.article-index-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.article-index-meta {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--secondary);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-bottom: 0.35rem;
}

.article-index-item h2 {
    font-size: 1.15rem;
    line-height: 1.35;
    margin-bottom: 0.45rem;
}

.article-index-item h2 a {
    color: var(--primary);
    transition: color 0.2s;
}

.article-index-item h2 a:hover {
    color: var(--secondary);
}

.article-index-excerpt {
    color: var(--gray);
    font-size: 0.95rem;
    margin-bottom: 0.65rem;
}

.article-index-read {
    font-weight: 600;
    font-size: 0.92rem;
    color: var(--primary);
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
}

.article-index-read:hover {
    color: var(--secondary);
}

@media (max-width: 560px) {
    .article-index-item {
        grid-template-columns: 1fr;
    }

    .article-index-thumb {
        max-width: 280px;
    }
}