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

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    color: #f1f5f9;
    min-height: 100vh;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    line-height: 1.7;
}

header {
    width: 100%;
    padding: 1.4rem 2rem;
    background: rgba(15, 23, 42, 0.94);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(71, 85, 105, 0.4);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.6);
    position: sticky;
    top: 0;
    z-index: 1000;
    text-align: center;
}

header h1 {
    font-size: 2.25rem;
    font-weight: 800;
    color: #93c5fd;
    margin: 0;
    letter-spacing: -0.6px;
}

nav {
    margin-top: 0.8rem;
}

nav a {
    color: #cbd5e1;
    text-decoration: none;
    margin: 0 1.4rem;
    font-weight: 600;
    font-size: 1rem;
    transition: color 0.2s ease;
}

nav a:hover,
nav a:focus {
    color: #60a5fa;
}

main {
    flex: 1;
    width: 100%;
    max-width: 1280px;
    padding: 3.5rem 1.5rem 5rem;
    margin: 1.5rem auto;
    text-align: center;
}

section {
    margin: 5.5rem 0;
    padding: 3.2rem 2.8rem;
    background: #1e293b;
    border: 1px solid #334155;
    border-radius: 16px;
    box-shadow: 0 10px 32px rgba(0, 0, 0, 0.45);
}

section h2 {
    font-size: 2.25rem;
    font-weight: 800;
    color: #93c5fd;
    margin-bottom: 1.6rem;
    letter-spacing: -0.5px;
}

section h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: #bfdbfe;
    margin: 2.2rem 0 1.2rem;
}

section p {
    color: #e2e8f0;
    margin-bottom: 1.5rem;
    font-size: 1.05rem;
}

.feature-card,
.stat-box,
.testimonial {
    background: #0f172a;
    padding: 2rem;
    margin: 1.2rem;
    border-radius: 14px;
    border: 1px solid #475569;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.5);
    transition: all 0.3s ease;
}

.feature-card:hover,
.stat-box:hover,
.testimonial:hover {
    transform: translateY(-6px);
    border-color: #60a5fa;
    box-shadow: 0 16px 40px rgba(96, 165, 250, 0.18);
}

.stats,
.testimonials {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 2rem;
}

.btn {
    padding: 1.1rem 2.8rem;
    background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
    color: #ffffff;
    font-weight: 700;
    font-size: 1.1rem;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
    transition: all 0.28s ease;
    box-shadow: 0 8px 24px rgba(29, 78, 216, 0.4);
}

.btn:hover {
    background: linear-gradient(135deg, #60a5fa 0%, #2563eb 100%);
    transform: translateY(-3px);
    box-shadow: 0 16px 40px rgba(59, 130, 246, 0.5);
}

.btn:active {
    transform: translateY(0);
    box-shadow: 0 6px 16px rgba(59, 130, 246, 0.35);
}

footer {
    width: 100%;
    padding: 3rem 1.5rem 2.5rem;
    background: #0f172a;
    border-top: 1px solid #334155;
    box-shadow: 0 -6px 20px rgba(0, 0, 0, 0.5);
    text-align: center;
    margin-top: auto;
}

footer a {
    color: #cbd5e1;
    text-decoration: none;
    transition: color 0.2s ease;
}

footer a:hover {
    color: #93c5fd;
}

@media (max-width: 768px) {
    header {
        padding: 1.2rem 1.5rem;
    }

    header h1 {
        font-size: 1.9rem;
    }

    main {
        padding: 2rem 1rem 4rem;
    }

    section {
        padding: 2.4rem 1.8rem;
        margin: 4rem 0;
    }

    .feature-card,
    .stat-box,
    .testimonial {
        width: 100%;
        max-width: 480px;
        margin: 1.2rem auto;
    }

    .stats,
    .testimonials {
        flex-direction: column;
        gap: 1.8rem;
    }

    .btn {
        padding: 1rem 2.4rem;
        font-size: 1.05rem;
    }
}

@media (max-width: 480px) {
    nav a {
        margin: 0 0.9rem;
        font-size: 0.95rem;
    }

    section h2 {
        font-size: 1.9rem;
    }
}