body {
    font-family: 'Segoe UI', Arial, sans-serif;
    background: #f7f9fc;
    margin: 0;
    color: #1a2135;
}

header {
    background: #1a2940;
    color: #fff;
    padding: 0;
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1240px;
    margin: auto;
    padding: 0 32px;
    height: 70px;
}

.logo {
    display: flex;
    align-items: center;
    font-size: 1.3rem;
    font-weight: 600;
}
.logo-icon {
    font-size: 2.2rem;
    margin-right: 8px;
}
nav ul {
    display: flex;
    gap: 32px;
    margin: 0;
    padding: 0;
    list-style: none;
}
nav ul li a {
    color: #fff;
    text-decoration: none;
    font-weight: 500;
    letter-spacing: 0.02em;
    transition: color 0.2s;
}
nav ul li a:hover {
    color: #00c2ff;
}

/* Hero */
.hero {
    background: linear-gradient(135deg, #1a2940 70%, #2e4766 100%);
    color: #fff;
    padding: 48px 0 32px 0;
    text-align: center;
}
.hero h1 {
    font-size: 2.5rem;
    font-weight: 700;
}
.hero p {
    font-size: 1.15rem;
    margin: 18px 0 32px 0;
    opacity: .96;
}

.card-row {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 32px;
    margin-top: 16px;
}
.card {
    border-radius: 16px;
    padding: 32px 24px 24px 24px;
    min-width: 260px;
    max-width: 325px;
    flex: 1 0 260px;
    box-shadow: 0 2px 12px 0 rgba(40,60,110,0.05);
    background: #fff;
    display: flex;
    flex-direction: column;
    align-items: center;
    transition: transform .12s;
}

.card .icon {
    font-size: 2.4rem;
    margin-bottom: 12px;
}
.card-title {
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 8px;
}
.card.blue {
    background: linear-gradient(135deg, #2663c8 80%, #4e8fff 100%);
    color: #fff;
}
.card.dark {
    background: linear-gradient(135deg, #1a2940 80%, #2e4766 100%);
    color: #fff;
}
.card.green {
    background: linear-gradient(135deg, #1abc9c 80%, #06e7a8 100%);
    color: #fff;
}
.card.lightblue {
    background: #f0f6ff;
}
.card.lightgreen {
    background: #e8fef4;
}
.card.lightyellow {
    background: #fff9ea;
}
.card.simple {
    background: #fff;
    border: 1.5px solid #e1e5f0;
}
.card-row .card {
    min-width: 220px;
    margin: 0 12px 16px 12px;
}
.card ul {
    margin: 15px 0 0 0;
    padding: 0 0 0 20px;
    font-size: 0.98rem;
    color: #213a5c;
}
.card .big {
    font-size: 2.9rem;
}

.hizmetler {
    padding: 54px 0 32px 0;
    text-align: center;
}
.hizmetler h2 {
    font-size: 2rem;
    margin-bottom: 32px;
}

.nedenbiz {
    padding: 54px 0 32px 0;
    text-align: center;
}
.nedenbiz h2 {
    font-size: 2rem;
    margin-bottom: 35px;
}

/* İletişim */
.iletisim {
    padding: 54px 0 28px 0;
    background: #f7f9fc;
    text-align: center;
}
.iletisim h2 {
    font-size: 2rem;
    margin-bottom: 36px;
}
.contact-row {
    display: flex;
    justify-content: center;
    gap: 32px;
    flex-wrap: wrap;
}
.contact-card {
    background: #fff;
    border-radius: 18px;
    box-shadow: 0 2px 8px 0 rgba(40,60,110,0.05);
    padding: 32px 36px;
    font-size: 1.1rem;
    min-width: 230px;
    max-width: 320px;
    text-align: left;
    margin-bottom: 12px;
    display: flex;
    align-items: flex-start;
    gap: 24px;
}
.contact-icon {
    font-size: 2.1rem;
    margin-right: 6px;
    margin-top: 2px;
}

/* Footer */
footer {
    background: #1a2940;
    color: #fff;
    text-align: center;
    padding: 18px 0 12px 0;
    font-size: 1rem;
    margin-top: 0;
}
.footer-container {
    max-width: 1240px;
    margin: auto;
    letter-spacing: .01em;
}

@media (max-width: 900px) {
    .card-row, .contact-row {
        flex-direction: column;
        align-items: center;
    }
    .hizmetler, .nedenbiz, .iletisim {
        padding-left: 8px;
        padding-right: 8px;
    }
}