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

html {
    scroll-behavior: smooth;
}

body {
    font-family: Arial, Helvetica, sans-serif;
    color: #1e293b;
    line-height: 1.6;
}

.container {
    width: 90%;
    max-width: 1150px;
    margin: auto;
}

header {
    background: #ffffff;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar {
    min-height: 75px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

.logo {
    font-size: 25px;
    font-weight: bold;
    color: #172554;
    text-decoration: none;
}

.logo span {
    color: #6d28d9;
}

nav {
    display: flex;
    gap: 25px;
}

nav a {
    text-decoration: none;
    color: #334155;
    font-weight: 600;
}

nav a:hover {
    color: #6d28d9;
}

.hero {
    background: linear-gradient(135deg, #111c4e, #5523a9);
    color: white;
    padding: 100px 0;
}

.hero-content {
    max-width: 850px;
    text-align: center;
}

.tagline {
    color: #8b5cf6;
    font-weight: bold;
    font-size: 13px;
    letter-spacing: 2px;
    margin-bottom: 12px;
}

.hero .tagline {
    color: #c4b5fd;
}

.hero h1 {
    font-size: clamp(36px, 5vw, 58px);
    line-height: 1.15;
    margin-bottom: 22px;
}

.hero h1 span {
    color: #c4b5fd;
}

.hero-content > p:not(.tagline) {
    color: #e2e8f0;
    font-size: 18px;
    max-width: 700px;
    margin: 0 auto 30px;
}

.hero-buttons {
    display: flex;
    justify-content: center;
    gap: 14px;
    flex-wrap: wrap;
}

.btn {
    display: inline-block;
    text-decoration: none;
    padding: 13px 24px;
    border-radius: 7px;
    font-weight: bold;
    transition: 0.2s;
}

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

.primary {
    background: #7c3aed;
    color: white;
}

.primary:hover {
    background: #6d28d9;
}

.secondary {
    border: 1px solid #ffffff;
    color: white;
}

.section {
    padding: 80px 0;
}

.section-heading {
    text-align: center;
    margin-bottom: 40px;
}

.section-heading h2,
.about h2,
.academy h2,
.contact h2 {
    font-size: 34px;
    line-height: 1.25;
    margin-bottom: 15px;
}

.section-heading > p:last-child,
.about-content > p:last-child {
    color: #64748b;
}

.cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
}

.card {
    background: white;
    padding: 30px;
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    box-shadow: 0 5px 20px rgba(15, 23, 42, 0.05);
    transition: 0.2s;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 30px rgba(15, 23, 42, 0.1);
}

.card-icon {
    font-size: 38px;
    margin-bottom: 15px;
}

.card h3 {
    margin-bottom: 12px;
    font-size: 21px;
}

.card p {
    color: #64748b;
    margin-bottom: 20px;
}

.card a {
    color: #6d28d9;
    font-weight: bold;
    text-decoration: none;
}

.academy {
    background: #f5f3ff;
    padding: 80px 0;
}

.academy-content {
    display: grid;
    grid-template-columns: 1.3fr 1fr;
    gap: 50px;
    align-items: center;
}

.academy-content > div:first-child > p:not(.tagline) {
    color: #64748b;
}

.academy ul {
    list-style: none;
    margin: 22px 0 28px;
}

.academy li {
    margin-bottom: 12px;
}

.academy li::before {
    content: "✓";
    color: #6d28d9;
    font-weight: bold;
    margin-right: 10px;
}

.academy-box {
    background: white;
    padding: 45px 25px;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 8px 30px rgba(91, 33, 182, 0.1);
}

.academy-symbol {
    font-size: 65px;
    margin-bottom: 15px;
}

.academy-box h3 {
    font-size: 24px;
    margin-bottom: 12px;
}

.academy-box p {
    color: #64748b;
}

.about {
    text-align: center;
}

.about-content {
    max-width: 800px;
}

.about-content > p:last-child {
    font-size: 17px;
}

.contact {
    background: #172554;
    color: white;
    text-align: center;
    padding: 75px 0;
}

.contact .tagline {
    color: #c4b5fd;
}

.contact > .container > p:not(.tagline) {
    color: #cbd5e1;
    margin-bottom: 25px;
}

.whatsapp {
    background: #25d366;
    color: #ffffff;
}

.contact-note {
    margin-top: 25px;
    font-size: 13px;
}

footer {
    background: #0f172a;
    color: #cbd5e1;
    padding: 22px 0;
    text-align: center;
    font-size: 14px;
}

.floating-whatsapp {
    position: fixed;
    right: 22px;
    bottom: 22px;
    background: #25d366;
    color: white;
    width: 55px;
    height: 55px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    text-decoration: none;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    z-index: 200;
}

@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        padding: 16px 0;
    }

    nav {
        gap: 15px;
        flex-wrap: wrap;
        justify-content: center;
    }

    nav a {
        font-size: 14px;
    }

    .hero {
        padding: 70px 0;
    }

    .section,
    .academy {
        padding: 55px 0;
    }

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

    .academy-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .section-heading h2,
    .about h2,
    .academy h2,
    .contact h2 {
        font-size: 29px;
    }
}
```