.hero-section {
    padding: 6rem 0;
    background: var(--gradient-dark);
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(255, 51, 102, 0.15) 0%, transparent 70%);
    border-radius: 50%;
}

.hero-section::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -5%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(0, 217, 255, 0.12) 0%, transparent 70%);
    border-radius: 50%;
}

.hero-section .container {
    position: relative;
    z-index: 1;
    max-width: 900px;
    text-align: center;
}

.hero-section h1 {
    margin-bottom: 2rem;
}

.hero-section p {
    font-size: clamp(1rem, 2vw, 1.25rem);
    margin-bottom: 2.5rem;
    opacity: 0.9;
}

.hero-section .btn-primary {
}

section {
    padding: 5rem 0;
}

.table-of-contents {
    background: rgba(10, 14, 39, 0.5);
    padding: 3rem 0;
}

.table-of-contents nav ul {
    list-style: none;
    padding-left: 0;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1rem;
}

.table-of-contents nav li {
    background: var(--gradient-dark);
    padding: 1rem 1.5rem;
    border-radius: 8px;
    border-left: 3px solid var(--secondary);
    transition: all 0.3s ease;
}

.table-of-contents nav li:hover {
    transform: translateX(8px);
    border-left-color: var(--accent);
    box-shadow: var(--shadow-sm);
}

.table-of-contents nav a {
    color: var(--light);
    font-weight: 600;
}

article {
    margin-bottom: 4rem;
}

.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

.cards-grid .card {
    text-align: center;
    padding: 2rem 1.5rem;
}

.cards-grid h4 {
    margin-bottom: 1rem;
}

.icon-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 2rem;
    margin: 3rem 0;
}

.feature-item {
    text-align: center;
    padding: 1.5rem;
}

.feature-item .icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    background: var(--gradient-secondary);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-glow);
    position: relative;
}

.feature-item .icon::before {
    content: '';
    position: absolute;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 10px;
    transform: rotate(45deg);
}

.feature-item h4 {
    font-size: 1.125rem;
    margin-bottom: 0.5rem;
}

.feature-item p {
    font-size: 0.875rem;
    opacity: 0.8;
    margin: 0;
}

.accordion-item {
    background: var(--gradient-dark);
    border-radius: 12px;
    margin-bottom: 1.5rem;
    overflow: hidden;
    border: 1px solid rgba(0, 217, 255, 0.1);
    transition: all 0.3s ease;
}

.accordion-item:hover {
    border-color: rgba(0, 217, 255, 0.3);
}

.accordion-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.5rem 2rem;
    cursor: pointer;
    transition: background 0.3s ease;
}

.accordion-header:hover {
    background: rgba(0, 217, 255, 0.05);
}

.accordion-header h3 {
    margin: 0;
    font-size: 1.25rem;
    color: var(--light);
}

.accordion-header button {
    background: var(--gradient-secondary);
    border: none;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    cursor: pointer;
    position: relative;
    transition: transform 0.3s ease;
    flex-shrink: 0;
}

.accordion-header button::before,
.accordion-header button::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 14px;
    height: 2px;
    background: white;
    transform: translate(-50%, -50%);
    transition: transform 0.3s ease;
}

.accordion-header button::after {
    transform: translate(-50%, -50%) rotate(90deg);
}

.accordion-header button[aria-expanded="true"] {
    transform: rotate(45deg);
}

.accordion-body {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.4s ease;
    padding: 0 2rem;
}

.accordion-body.active {
    max-height: 1000px;
    padding: 0 2rem 1.5rem;
}

.cta-section {
    background: var(--gradient-primary);
    text-align: center;
    padding: 5rem 0;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><circle cx="50" cy="50" r="2" fill="rgba(255,255,255,0.1)"/></svg>');
    opacity: 0.3;
}

.cta-section .container {
    position: relative;
    z-index: 1;
}

.cta-section h2 {
    color: white;
    margin-bottom: 1.5rem;
}

.cta-section h2::after {
    display: none;
}

.cta-section p {
    color: rgba(255, 255, 255, 0.95);
    font-size: 1.25rem;
    margin-bottom: 2.5rem;
}

.cta-section .btn-primary {
    background: white;
    color: var(--primary);
    font-size: 1.25rem;
    padding: 18px 50px;
}

.cta-section .btn-primary:hover {
    background: var(--accent);
    color: var(--dark);
}

@media (max-width: 767px) {
    .hero-section {
        padding: 4rem 0;
    }
    
    section {
        padding: 3rem 0;
    }
    
    h2::after {
        width: 40px;
    }
    
    .cards-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .icon-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .table-of-contents nav ul {
        grid-template-columns: 1fr;
    }
    
    .btn-primary {
        font-size: 1rem;
        padding: 14px 32px;
    }
    
    .accordion-header {
        padding: 1.25rem 1.5rem;
    }
    
    .accordion-header h3 {
        font-size: 1.125rem;
    }
    
    .accordion-body {
        padding: 0 1.5rem;
    }
    
    .accordion-body.active {
        padding: 0 1.5rem 1.25rem;
    }
    
    .cta-section {
        padding: 3rem 0;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}