body {
    font-family: 'Roboto', sans-serif;
    margin: 0;
    padding: 0;
    background: #f5f7fa;
    color: #222;
}

header {
    background: #0056b3; /* eski parlak olmayan koyu mavi */
    color: #fff;
    padding: 70px 20px 50px;
    text-align: center;
    user-select: none;
}

header h1 {
    font-size: 3rem;
    font-weight: 800;
    letter-spacing: 2px;
    margin-bottom: 10px;
    text-shadow: none; /* parlaklık kalktı */
}

header p {
    font-size: 1.2rem;
    font-weight: 500;
    opacity: 0.85;
    max-width: 650px;
    margin: 0 auto;
}

.container-home {
    max-width: 1100px;
    margin: 50px auto 80px;
    padding: 0 20px;
}

/* Popüler hesaplama kartları */
.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 28px;
    margin-bottom: 60px;
}

.feature-card {
    background: #fff;
    border-radius: 14px;
    padding: 30px 25px;
    box-shadow: 0 8px 25px rgba(0, 86, 179, 0.12);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    cursor: pointer;
    user-select: none;
}

.feature-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 20px 50px rgba(0, 86, 179, 0.25);
}

.feature-card h3 {
    color: #003366;
    font-weight: 700;
    font-size: 1.45rem;
    margin-bottom: 12px;
}

.feature-card p {
    font-size: 1rem;
    color: #444;
    line-height: 1.5;
}

/* Neden Hesaplanet? bölümü */
.why-section {
    background: #e9f0ff;
    border-radius: 12px;
    padding: 40px 30px;
    box-shadow: 0 10px 30px rgba(0, 86, 179, 0.1);
    margin-bottom: 70px;
    text-align: center;
    user-select: none;
}

.why-section h2 {
    font-size: 2.6rem;
    font-weight: 800;
    color: #004080;
    margin-bottom: 30px;
}

.why-points {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 30px;
}

.why-point {
    flex: 1 1 250px;
    font-size: 1.1rem;
    color: #1a1a1a;
    font-weight: 500;
    line-height: 1.5;
    background: white;
    padding: 20px 25px;
    border-radius: 10px;
    box-shadow: 0 6px 18px rgba(0, 86, 179, 0.1);
    transition: box-shadow 0.3s ease;
}

.why-point:hover {
    box-shadow: 0 14px 40px rgba(0, 86, 179, 0.2);
}

/* Blog öne çıkanlar */
.blog-preview-section {
    margin-bottom: 60px;
}

.blog-preview-section h2 {
    font-size: 2.4rem;
    color: #003366;
    font-weight: 700;
    margin-bottom: 40px;
    text-align: center;
}

.blog-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
}

.blog-item {
    background: white;
    border-radius: 12px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.06);
    padding: 20px 18px;
    transition: box-shadow 0.3s ease;
}

.blog-item:hover {
    box-shadow: 0 16px 50px rgba(0, 0, 0, 0.12);
}

.blog-item h3 {
    font-size: 1.3rem;
    color: #004080;
    margin-bottom: 10px;
}

.blog-item p {
    font-size: 0.95rem;
    color: #555;
    line-height: 1.4;
    margin-bottom: 12px;
}

.blog-item a {
    font-weight: 600;
    color: #0056b3;
    text-decoration: none;
}

.blog-item a:hover {
    text-decoration: underline;
}

/* CTA Buton */
.cta-section {
    text-align: center;
    margin-top: 40px;
}

.cta-button {
    background: #0056b3;
    color: white;
    padding: 16px 40px;
    font-size: 1.3rem;
    font-weight: 700;
    border-radius: 45px;
    text-decoration: none;
    box-shadow: 0 8px 25px rgba(0, 86, 179, 0.35);
    transition: background 0.3s ease, box-shadow 0.3s ease;
    user-select: none;
}

.cta-button:hover {
    background: #003d80;
    box-shadow: 0 12px 40px rgba(0, 61, 128, 0.5);
}

/* Responsive */
@media (max-width: 900px) {
    .why-points {
        flex-direction: column;
    }
}