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

html {
    scroll-behavior: smooth;
}

body {
    font-family: Arial, Helvetica, sans-serif;
    background: #ffffff;
    color: #111827;
    line-height: 1.6;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
}

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

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

.site-header {
    width: 100%;
    background: #f4f4f5;
    border-bottom: 1px solid #e5e7eb;
    position: sticky;
    top: 0;
    z-index: 999;
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 25px;
    min-height: 95px;
}

.brand {
    display: flex;
    align-items: center;
    flex-shrink: 0;
}

.brand img {
    height: 58px;
    width: auto;
    object-fit: contain;
}

.main-nav ul {
    list-style: none;
    display: flex;
    align-items: center;
    gap: 34px;
    margin: 0;
    padding: 0;
}

.main-nav ul li {
    list-style: none;
}

.main-nav ul li a {
    font-size: 17px;
    font-weight: 600;
    color: #4b5563;
    transition: 0.3s ease;
    position: relative;
}

.main-nav ul li a:hover,
.main-nav ul li a.active {
    color: #0f172a;
}

.main-nav ul li a.active::after,
.main-nav ul li a:hover::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -8px;
    width: 100%;
    height: 2px;
    background: #0f172a;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 18px;
}

.login-link {
    font-size: 16px;
    font-weight: 600;
    color: #374151;
}

.btn {
    display: inline-block;
    padding: 14px 28px;
    border-radius: 999px;
    font-weight: 700;
    transition: 0.3s ease;
}

.btn-primary {
    background: #ffffff;
    color: #111827;
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.08);
}

.btn-primary:hover {
    transform: translateY(-2px);
}

.hero {
    background: #03153d;
    color: #ffffff;
    padding: 110px 0 90px;
    text-align: center;
}

.hero h1 {
    font-size: 68px;
    line-height: 1.1;
    font-weight: 800;
    max-width: 1000px;
    margin: 0 auto 28px;
}

.hero p {
    font-size: 22px;
    color: #dbe4ff;
    max-width: 1050px;
    margin: 0 auto 35px;
}

.hero .btn {
    background: #ffffff;
    color: #03153d;
}

.section {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    font-size: 38px;
    margin-bottom: 18px;
    color: #0f172a;
}

.section-text {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 45px;
    color: #6b7280;
    font-size: 18px;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.card {
    background: #ffffff;
    border-radius: 18px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.06);
    transition: 0.3s ease;
}

.card:hover {
    transform: translateY(-6px);
}

.card img {
    width: 100%;
    height: 240px;
    object-fit: cover;
}

.card-content {
    padding: 24px;
}

.card-content h3 {
    font-size: 24px;
    margin-bottom: 12px;
    color: #111827;
}

.card-content p {
    color: #6b7280;
    font-size: 16px;
}

.cta {
    background: #0f172a;
    color: #ffffff;
    text-align: center;
    padding: 80px 0;
}

.cta h2 {
    font-size: 42px;
    margin-bottom: 18px;
}

.cta p {
    font-size: 18px;
    color: #d1d5db;
    max-width: 760px;
    margin: 0 auto 28px;
}

.contact-section {
    padding: 80px 0;
    background: #f9fafb;
}

.contact-box {
    max-width: 800px;
    margin: 0 auto;
    background: #ffffff;
    padding: 35px;
    border-radius: 18px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
}

.contact-box form {
    display: grid;
    gap: 18px;
}

.contact-box input,
.contact-box textarea {
    width: 100%;
    padding: 15px 18px;
    border: 1px solid #d1d5db;
    border-radius: 12px;
    font-size: 16px;
    outline: none;
}

.contact-box textarea {
    min-height: 160px;
    resize: vertical;
}

.site-footer {
    background: #0b1120;
    color: #cbd5e1;
    padding: 28px 0;
    text-align: center;
    font-size: 15px;
}

@media (max-width: 1100px) {
    .header-container {
        flex-wrap: wrap;
        justify-content: center;
        padding: 18px 0;
    }

    .main-nav ul {
        flex-wrap: wrap;
        justify-content: center;
        gap: 20px;
    }

    .hero h1 {
        font-size: 52px;
    }

    .grid-3 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .header-actions {
        width: 100%;
        justify-content: center;
    }

    .hero {
        padding: 80px 0 70px;
    }

    .hero h1 {
        font-size: 38px;
    }

    .hero p {
        font-size: 18px;
    }

    .grid-3 {
        grid-template-columns: 1fr;
    }

    .brand img {
        height: 48px;
    }
}

@media (max-width: 480px) {
    .main-nav ul {
        gap: 14px;
    }

    .main-nav ul li a {
        font-size: 15px;
    }

    .btn {
        padding: 12px 22px;
    }

    .hero h1 {
        font-size: 30px;
    }
}