.about-content {
    max-width: 800px;
    margin: 2rem auto;
    padding: 0 1rem;
    color: var(--text-color);
    font-family: 'Inter', sans-serif;
}

.about-content h1,
.about-content h2,
.about-content h3 {
    color: var(--text-color);
    margin-bottom: 1rem;
    font-family: 'Noto Serif JP', serif;
}

.about-content h1 {
    font-size: 2.5rem;
    margin-bottom: 2rem;
    text-align: center;
}

.about-content section {
    margin-bottom: 3rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 1rem;
}

.about-content section:last-child {
    border-bottom: none;
}

.about-content p {
    line-height: 1.7;
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
    color: var(--text-color);
}

.about-content ul {
    margin-bottom: 1.5rem;
    padding-left: 2rem;
    color: var(--text-color);
}

.about-content li {
    margin-bottom: 0.75rem;
    font-size: 1.1rem;
    line-height: 1.6;
}

.example-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2rem;
    margin: 2rem 0;
    padding: 3rem 2rem;
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
}

.example-grid {
    display: grid;
    grid-template-columns: repeat(4, 60px);
    grid-template-rows: repeat(4, 60px);
    gap: 0;
    background-color: var(--cell-border);
    border: 2px solid var(--cell-border);
    width: fit-content;
    box-shadow: var(--shadow-md);
}

.example-cell {
    width: 60px;
    height: 60px;
    background-color: white;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    font-size: 1.5rem;
    font-weight: bold;
}

/* Number on top of arrow */
.example-cell span {
    z-index: 2;
    color: var(--primary-color);
    font-weight: 800;
    font-size: 1.6rem;
    text-shadow: 0 0 3px #fff, 0 0 3px #fff;
    pointer-events: none;
}

.arrow-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1;
}

.arrow-bg img {
    width: 90%;
    height: 90%;
    opacity: 0.8;
}

.example-row {
    display: flex;
    gap: 4rem;
    justify-content: center;
    flex-wrap: wrap;
}

.example-column {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.example-column h4 {
    margin: 0;
    color: var(--secondary-color);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-size: 0.9rem;
}