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

:root {
    --bg: #052350;
    --bg-light: #052350;
    --card: #008ed8;
    --text: #f8fafc;
    --muted: #94a3b8;
    --accent: #79c728;
    --accent-hover: #16a34a;
    --border: #334155;
}

body {
    font-family: Inter, Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.7;
}

.container {
    width: min(1200px, 92%);
    margin: auto;
}

header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(0, 142, 216, 0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
}

.logo {
    font-size: 1.4rem;
    font-weight: 800;
}

.logo span {
    color: var(--accent);
}

nav {
    display: flex;
    gap: 20px;
}

nav a {
    color: white;
    text-decoration: none;
    transition: 0.3s;
}

nav a:hover {
    color: var(--accent);
}

.hero {
    min-height: 85vh;
    display: flex;
    align-items: center;
}

.hero-content {
    display: grid;
    grid-template-columns: 1.3fr 1fr;
    gap: 50px;
    align-items: center;
    padding: 80px 0;
}

.hero h1 {
    font-size: 4rem;
    line-height: 1.1;
    margin-bottom: 20px;
}

.hero p {
    color: var(--muted);
    font-size: 1.2rem;
    margin-bottom: 30px;
}

.hero-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 30px;
}

.hero-card h3 {
    margin-bottom: 20px;
}

.hero-card ul {
    list-style: none;
}

.hero-card li {
    margin-bottom: 12px;
}

.btn {
    display: inline-block;
    text-decoration: none;
    padding: 14px 24px;
    border-radius: 12px;
    font-weight: 600;
    transition: 0.3s;
}

.hero-buttons {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

.primary {
    background: var(--accent);
    color: white;
}

.primary:hover {
    background: var(--accent-hover);
}

.secondary {
    border: 1px solid var(--border);
    color: white;
}

.secondary:hover {
    background: var(--bg-light);
}

.section {
    padding: 100px 0;
}

.section h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.lead {
    max-width: 800px;
    color: var(--muted);
    margin-bottom: 40px;
}

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

.card {
    background: var(--card);
    padding: 30px;
    border-radius: 18px;
    border: 1px solid var(--border);
}

.card h3 {
    margin-bottom: 15px;
}

.card p {
    color: var(--muted);
}

.dark {
    background: #0b1220;
}

.video-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 30px;
}

.video-card iframe {
    width: 100%;
    aspect-ratio: 16/9;
    border: 0;
    border-radius: 20px;
}

.video-info {
    background: var(--card);
    border-radius: 20px;
    padding: 30px;
    border: 1px solid var(--border);
}

.video-info h3 {
    margin-bottom: 20px;
}

.video-info p {
    color: var(--muted);
    margin-bottom: 20px;
}

.contact {
    text-align: center;
}

.contact p {
    color: var(--muted);
    margin-bottom: 25px;
}

footer {
    border-top: 1px solid var(--border);
    padding: 30px 0;
    text-align: center;
    color: var(--muted);
}

@media (max-width: 900px) {

    .hero-content,
    .video-grid,
    .cards {
        grid-template-columns: 1fr;
    }

    .hero h1 {
        font-size: 2.6rem;
    }

    nav {
        display: none;
    }
}