@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.site-banner {
    text-align: center;
    margin-bottom: 50px;
    padding: 30px 0;
    background-color: #ffffff;
    border-radius: 15px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
    position: relative;
    overflow: hidden;
    animation: fadeIn 0.8s ease-out forwards;
}

.site-banner::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #da251d, #524552);
    opacity: 0.15;
    z-index: 0;
    transform: skewY(-2deg) scaleX(1.1);
    transform-origin: top left;
}

.site-banner h1 {
    color: #352735;
    font-size: 3.2em;
    letter-spacing: -0.04em;
    font-weight: 800;
    position: relative;
    z-index: 1;
    text-shadow: 2px 2px 5px rgba(0, 0, 0, 0.05);
}

.article-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(330px, 0fr));
    gap: 40px;
    max-width: 1080px;
    margin: 0 auto;
    flex-grow: 1;
    padding-bottom: 20px;
}

.feature-card {
    background-color: #ffffff;
    border-radius: 18px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.12);
    transition: transform 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94), box-shadow 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94), border-color 0.4s ease;
    display: flex;
    flex-direction: column;
    border: 1px solid rgba(220, 220, 220, 0.5);
    animation: fadeIn 0.6s ease-out forwards;
    animation-delay: var(--animation-delay);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
    border-color: #33689e;
}

.card-visual {
    width: 100%;
    height: 250px;
    overflow: hidden;
    position: relative;
}

.card-visual::after {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.2) 0%, rgba(0, 0, 0, 0) 50%);
    pointer-events: none;
}

.card-visual img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.feature-card:hover .card-visual img {
    transform: scale(1.1);
}

.card-body {
    padding: 30px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.card-timestamp {
    font-size: 0.85em;
    color: #524552;
    margin-bottom: 12px;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 700;
}

.card-heading {
    font-size: 1.9em;
    color: #352735;
    margin-bottom: 20px;
    line-height: 1.35;
    font-weight: 800;
}

.card-excerpt {
    font-size: 1.05em;
    color: #524552;
    margin-bottom: 30px;
    flex-grow: 1;
}

.action-link {
    display: inline-block;
    background: linear-gradient(135deg, #33689e, #4a7bb7);
    color: #fff;
    padding: 14px 30px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 700;
    transition: all 0.3s ease;
    align-self: flex-start;
    box-shadow: 0 6px 15px rgba(51, 104, 158, 0.4);
    border: none;
}

.action-link:hover {
    background: linear-gradient(135deg, #33689e, #3b70a7, #3f75ad, #4680b4, #4a7bb7, #5385c0, #5c8bc7, #6693ce);
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 10px 20px rgba(51, 104, 158, 0.5);
}

.site-info {
    text-align: center;
    margin-top: 60px;
    padding: 25px;
    color: #524552;
    font-size: 0.95em;
    background-color: #ffffff;
    border-radius: 15px;
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.03);
    animation: fadeIn 0.8s ease-out forwards;
    animation-delay: 1.5s;
}

/* Responsive Design */
@media (max-width: 992px) {
    .article-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 30px;
    }

    .site-banner h1 {
        font-size: 2.8em;
    }

    .card-visual {
        height: 200px;
    }

    .card-body {
        padding: 25px;
    }

    .card-heading {
        font-size: 1.7em;
    }

    .action-link {
        padding: 12px 25px;
    }
}

@media (max-width: 600px) {
    body {
        padding: 15px;
    }

    .site-banner {
        margin-bottom: 30px;
        padding: 20px 0;
    }

    .site-banner h1 {
        font-size: 2.2em;
    }

    .article-grid {
        grid-template-columns: 1fr;
        gap: 25px;
    }

    .card-visual {
        height: 180px;
    }

    .card-body {
        padding: 20px;
    }

    .card-heading {
        font-size: 1.5em;
    }

    .card-excerpt {
        font-size: 0.95em;
    }

    .action-link {
        padding: 10px 20px;
        font-size: 0.9em;
    }
}