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

body {
    font-family: "Segoe UI", "PingFang SC", sans-serif;
    background: #070b14;
    color: #ffffff;
    line-height: 1.7;
    overflow-x: hidden;
}

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

.bg-grid {
    position: fixed;
    inset: 0;
    background-image:
        linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
    background-size: 40px 40px;
    z-index: -2;
}

.navbar {
    width: 100%;
    padding: 24px 8%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: fixed;
    top: 0;
    z-index: 999;
    backdrop-filter: blur(14px);
    background: rgba(7, 11, 20, 0.65);
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

.logo {
    font-size: 22px;
    font-weight: 700;
    letter-spacing: 1px;
}

.navbar nav {
    display: flex;
    gap: 32px;
}

.navbar nav a {
    font-size: 15px;
    opacity: 0.85;
    transition: 0.3s;
}

.navbar nav a:hover {
    opacity: 1;
    color: #4da3ff;
}

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 0 8%;
    position: relative;
}

.hero-content {
    max-width: 760px;
    z-index: 2;
}

.tag {
    color: #4da3ff;
    font-size: 14px;
    letter-spacing: 2px;
    margin-bottom: 20px;
}

.hero h1 {
    font-size: 72px;
    line-height: 1.1;
    margin-bottom: 24px;
    font-weight: 800;
}

.desc {
    font-size: 18px;
    color: rgba(255,255,255,0.75);
    max-width: 680px;
    margin-bottom: 36px;
}

.hero-buttons {
    display: flex;
    gap: 18px;
}

.btn {
    padding: 14px 28px;
    border-radius: 14px;
    font-weight: 600;
    transition: 0.3s;
    display: inline-block;
}

.primary {
    background: linear-gradient(135deg, #4da3ff, #2563eb);
    box-shadow: 0 10px 30px rgba(37, 99, 235, 0.25);
}

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

.secondary {
    border: 1px solid rgba(255,255,255,0.12);
    background: rgba(255,255,255,0.03);
}

.secondary:hover {
    border-color: #4da3ff;
}

.hero-glow {
    position: absolute;
    right: 10%;
    width: 500px;
    height: 500px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(77,163,255,0.25), transparent 70%);
    filter: blur(40px);
    z-index: 1;
}

.section {
    padding: 120px 8%;
}

.section h2 {
    font-size: 42px;
    margin-bottom: 24px;
}

.section-text {
    max-width: 800px;
    color: rgba(255,255,255,0.75);
    font-size: 18px;
}

.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 28px;
    margin-top: 40px;
}

.card {
    padding: 32px;
    border-radius: 20px;
    background: rgba(255,255,255,0.03);
    border: 1px solid rgba(255,255,255,0.06);
    transition: 0.3s;
}

.card:hover {
    transform: translateY(-6px);
    border-color: rgba(77,163,255,0.4);
}

.card h3 {
    margin-bottom: 14px;
    font-size: 24px;
}

.card p {
    color: rgba(255,255,255,0.72);
}

.feature-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 28px;
    margin-top: 40px;
}

.feature-item {
    padding: 30px;
    border-radius: 18px;
    background: rgba(255,255,255,0.025);
    border: 1px solid rgba(255,255,255,0.05);
}

.feature-item span {
    font-size: 32px;
    display: block;
    margin-bottom: 14px;
}

.feature-item h3 {
    margin-bottom: 12px;
}

.feature-item p {
    color: rgba(255,255,255,0.72);
}

.footer {
    padding: 40px 8%;
    border-top: 1px solid rgba(255,255,255,0.05);
    text-align: center;
    color: rgba(255,255,255,0.5);
    font-size: 14px;
}

@media (max-width: 768px) {
    .hero h1 {
        font-size: 46px;
    }

    .navbar nav {
        display: none;
    }

    .section h2 {
        font-size: 32px;
    }

    .desc,
    .section-text {
        font-size: 16px;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: flex-start;
    }
}