body {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

header {
    text-align: center;
    padding: 100px 0 60px;
    background: var(--white);
    margin-bottom: 40px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.03);
}

h1 {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 15px;
    background: linear-gradient(to right, var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.subtitle {
    font-size: 1.25rem;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
}

.extensions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
    padding-bottom: 80px;
}

.extension-card {
    background: var(--white);
    border-radius: 16px;
    padding: 40px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid rgba(0,0,0,0.05);
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    position: relative;
    overflow: hidden;
    text-decoration: none;
    color: inherit;
}

.extension-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.08);
    border-color: rgba(37, 99, 235, 0.3);
}

.card-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, #e0e7ff 0%, #dbeafe 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    margin-bottom: 24px;
    color: var(--primary-color);
    overflow: hidden;
}

.card-icon img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.card-tag {
    position: absolute;
    top: 20px;
    right: 20px;
    padding: 4px 12px;
    background: #ecfdf5;
    color: #059669;
    font-size: 0.75rem;
    font-weight: 700;
    border-radius: 20px;
    text-transform: uppercase;
}

.tag-new {
    background: #fff1f2;
    color: #e11d48;
}

.extension-card h2 {
    font-size: 1.5rem;
    margin-bottom: 12px;
    color: var(--text-dark);
}

.extension-card p {
    color: var(--text-light);
    margin-bottom: 24px;
    flex-grow: 1;
    line-height: 1.5;
}

.card-arrow {
    color: var(--primary-color);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
    opacity: 0;
    transform: translateX(-10px);
    transition: all 0.3s ease;
}

.extension-card:hover .card-arrow {
    opacity: 1;
    transform: translateX(0);
}

footer {
    margin-top: auto;
}