body {
    margin: 0;
    font-family: 'Inter', sans-serif;
    background: #0b1220;
    color: #e5e7eb;
    letter-spacing: -0.2px;
}

/* subtle grid background */
body::before {
    content: "";
    position: fixed;
    inset: 0;
    background-image: linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
                      linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
    background-size: 40px 40px;
    pointer-events: none;
    z-index: 0;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: auto;
    position: relative;
    z-index: 1;
}

/* HEADER */
.header {
    background: rgba(17, 24, 39, 0.85);
    backdrop-filter: blur(8px);
    padding: 25px 0;
}

.brand {
    font-size: 22px;
    font-weight: 700;
    color: #3b82f6;
}

nav a {
    color: #cbd5e1;
    margin-left: 25px;
    text-decoration: none;
    font-weight: 500;
}

nav a:hover {
    color: #3b82f6;
}

/* HERO */
.hero {
    padding: 160px 0;
    text-align: center;
    background: radial-gradient(circle at center, #3b82f620 0%, transparent 70%);
}

.hero h1 {
    font-size: 52px;
    font-weight: 700;
    color: #3b82f6;
    margin-bottom: 25px;
}

.hero p {
    font-size: 18px;
    max-width: 700px;
    margin: auto;
    color: #94a3b8;
}

/* SECTION */
section {
    padding: 120px 0;
}

/* CARD GRID */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 35px;
}

.card {
    background: rgba(17, 24, 39, 0.7);
    padding: 35px;
    border-radius: 16px;
    border: 1px solid rgba(59, 130, 246, 0.15);
    transition: all 0.3s ease;
}

.card:hover {
    transform: translateY(-6px);
    border-color: #3b82f6;
    box-shadow: 0 10px 40px rgba(59,130,246,0.15);
}

.card h3 {
    margin: 15px 0;
    font-size: 20px;
}

.card h3 a {
    color: white;
    text-decoration: none;
}

.card p {
    color: #94a3b8;
    font-size: 14px;
}

.badge {
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: #3b82f6;
}

/* FOCUS */
.focus-section {
    background: rgba(17,24,39,0.6);
    border-top: 1px solid rgba(255,255,255,0.05);
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

.focus-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 25px;
}

.focus-item {
    padding: 25px;
    background: rgba(17,24,39,0.8);
    border-radius: 14px;
    border: 1px solid rgba(59,130,246,0.1);
    text-align: center;
    transition: 0.3s;
}

.focus-item:hover {
    border-color: #3b82f6;
    box-shadow: 0 8px 30px rgba(59,130,246,0.1);
}

/* FOOTER */
.footer {
    text-align: center;
    padding: 80px 0;
    background: #0f172a;
    color: #94a3b8;
    font-size: 14px;
}