* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: "Segoe UI", Arial, sans-serif;
    background: #0e1116;
    color: #e6e6e6;
}

/* HEADER */
header {
    background: linear-gradient(90deg, #0b0f14, #141a22);
    border-bottom: 1px solid #222;
}

.header-inner {
    max-width: 1200px;
    margin: auto;
    padding: 18px 25px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

header h1 {
    font-size: 20px;
    margin: 0;
    letter-spacing: 1px;
}

nav a {
    color: #cfd8dc;
    text-decoration: none;
    margin-left: 20px;
    font-weight: 600;
}

nav a:hover {
    color: #00e5ff;
}

/* HERO */
.hero {
    background: radial-gradient(circle at top, #141a22, #0e1116);
    padding: 70px 25px;
    border-bottom: 1px solid #1f2933;
}

.hero-inner {
    max-width: 1200px;
    margin: auto;
}

.hero h2 {
    font-size: 34px;
    margin-bottom: 15px;
    color: #ffffff;
}

.hero p {
    max-width: 700px;
    font-size: 18px;
    color: #b0bec5;
}

/* CONTENT */
.container {
    max-width: 1200px;
    margin: auto;
    padding: 50px 25px;
}

.section {
    margin-bottom: 50px;
}

.section h3 {
    color: #00e5ff;
    margin-bottom: 15px;
    letter-spacing: 0.5px;
}

.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 20px;
}

.card {
    background: #141a22;
    border: 1px solid #1f2933;
    padding: 20px;
    border-radius: 6px;
}

.card h4 {
    margin-top: 0;
    color: #ffffff;
}

.card ul {
    padding-left: 18px;
    line-height: 1.6;
}

/* FOOTER */
footer {
    background: #0b0f14;
    border-top: 1px solid #1f2933;
    text-align: center;
    padding: 20px;
    font-size: 14px;
    color: #8fa3ad;
}

/* RESPONSIVE */
@media (max-width: 700px) {
    nav {
        display: none;
    }
}