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

html {
    scroll-behavior: smooth;
}

body {
    font-family: "Segoe UI", Roboto, Arial, sans-serif;
    color: #1f2937;
    background: #ffffff;
    line-height: 1.6;
}

.container {
    width: 92%;
    max-width: 1200px;
    margin: auto;
}

.section {
    padding: 80px 0;
}

.section.alt {
    background: linear-gradient(180deg, #f5f7ff, #f9fafb);
}

.section h2 {
    font-size: 2.4rem;
    margin-bottom: 20px;
    background: linear-gradient(90deg, #2563eb, #7c3aed);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.section p {
    font-size: 1.05rem;
    max-width: 780px;
    margin-bottom: 16px;
}

.header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: #ffffff;
    border-bottom: 1px solid #e5e7eb;
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 0;
}

.logo img {
    height: 40px;
}

nav a {
    color: #334155;
    text-decoration: none;
    margin-left: 25px;
    font-weight: 500;
    transition: color 0.2s ease;
}

nav a:hover {
    color: #6366f1;
}

.hero-slider {
    position: relative;
    padding: 100px 0;
    color: #ffffff;
    background: linear-gradient(
        120deg,
        #1e3a8a,
        #4f46e5,
        #7c3aed,
        #2563eb
    );
    background-size: 300% 300%;
    animation: heroGradient 10s ease infinite;
    overflow: hidden;
}

.hero-center {
    text-align: center;
    max-width: 900px;
}

.hero-slider h1 {
    font-size: 3.2rem;
    margin-bottom: 20px;
    line-height: 1.15;
}

.hero-slider p {
    font-size: 1.15rem;
    color: #e0e7ff;
    max-width: 900px;
    margin: auto;
    white-space: nowrap;
}

@keyframes heroGradient {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 60px;
    align-items: center;
}

.about-visual img {
    width: 100%;
    max-width: 520px;
    border-radius: 18px;
    box-shadow: 0 30px 70px rgba(99, 102, 241, 0.25);
}

.about-content {
    padding-left: 10px;
}

.cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 40px;
}

.card {
    background: #ffffff;
    border-radius: 14px;
    padding: 35px 25px;
    text-align: center;
    box-shadow: 0 12px 30px rgba(30, 58, 138, 0.12);
    backdrop-filter: blur(6px);
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.card:hover {
    transform: translateY(-6px);
    box-shadow: 0 25px 60px rgba(99, 102, 241, 0.25);
}

.card img {
    width: 120px;
    margin-bottom: 20px;
}

.card h3 {
    margin-bottom: 10px;
    font-size: 1.3rem;
}

.card p {
    color: #6b7280;
}

.accent-blue {
    border-top: 5px solid #2563eb;
}

.accent-teal {
    border-top: 5px solid #4f46e5;
}

.accent-indigo {
    border-top: 5px solid #7c3aed;
}

#contact p {
    font-size: 1.1rem;
}

#contact strong {
    color: #4f46e5;
}

.footer {
    background: linear-gradient(135deg, #1e3a8a, #6d28d9);
    color: #e0e7ff;
    padding: 25px 0;
    text-align: center;
    font-size: 0.9rem;
}

@media (max-width: 900px) {
    .hero-slider h1 {
        font-size: 2.4rem;
    }

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

    .about-visual {
        text-align: center;
    }

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

    nav a {
        margin-left: 15px;
    }
}