@charset "utf-8";

.article-header {
    background: linear-gradient(135deg, var(--color-main) 0%, var(--color-main-strong) 100%);
    color: #fff;
    padding: 50px 40px;
    border-radius: var(--radius-xl);
    margin-bottom: 30px;
}

.article-header h1 {
    color: #fff;
    font-size: 1.8rem;
    margin-bottom: 15px;
}

.article-lead {
    font-size: 1rem;
    opacity: 0.95;
    line-height: 1.8;
}

.toc-box {
    background: #fff;
    border: 2px solid var(--color-main-soft);
    border-radius: var(--radius-md);
    padding: 25px 30px;
    margin-bottom: 30px;
}

.toc-title {
    font-weight: 700;
    color: var(--color-main-strong);
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.toc-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.toc-list li {
    padding: 8px 0;
    border-bottom: 1px dashed #e0e0e0;
}

.toc-list li:last-child {
    border-bottom: none;
}

.toc-list a {
    color: var(--color-text);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.95rem;
}

.toc-list a:hover {
    color: var(--color-main);
}

.toc-list .num {
    background: var(--color-main-soft);
    color: var(--color-main-strong);
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 700;
}

.content-section {
    background: #fff;
    border-radius: var(--radius-xl);
    padding: 40px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    margin-bottom: 30px;
}

.content-section h2 {
    font-size: 1.3rem;
    color: var(--color-main-strong);
    border-left: 4px solid var(--color-main);
    padding-left: 15px;
    margin: 0 0 25px;
}

.content-section h3 {
    font-size: 1.1rem;
    color: var(--color-main-strong);
    margin: 30px 0 15px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.content-section p {
    margin: 0 0 20px;
    line-height: 2;
}

.highlight-box {
    background: var(--color-main-soft);
    border-radius: var(--radius-md);
    padding: 25px;
    margin: 25px 0;
}

.highlight-box strong {
    color: var(--color-main-strong);
}

.comparison-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin: 25px 0;
}

.merit-box,
.demerit-box {
    border-radius: var(--radius-md);
    padding: 25px;
}

.merit-box {
    background: #e8f5e9;
    border: 1px solid #c8e6c9;
}

.demerit-box {
    background: #fff3e0;
    border: 1px solid #ffe0b2;
}

.merit-box h4,
.demerit-box h4 {
    margin: 0 0 15px;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1rem;
}

.merit-box h4 {
    color: #2e7d32;
}

.demerit-box h4 {
    color: #e65100;
}

.merit-box ul,
.demerit-box ul {
    margin: 0;
    padding-left: 20px;
}

.merit-box li,
.demerit-box li {
    margin-bottom: 10px;
    line-height: 1.7;
}

.product-link-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin: 25px 0;
}

.product-link-card {
    background: #f9fbfa;
    border-radius: var(--radius-md);
    padding: 20px;
    text-decoration: none;
    color: var(--color-text);
    transition: all 0.3s;
    border: 2px solid transparent;
}

.product-link-card:hover {
    border-color: var(--color-main);
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1);
}

.product-link-card h5 {
    margin: 0 0 8px;
    font-size: 1rem;
    color: var(--color-main-strong);
}

.product-link-card p {
    margin: 0;
    font-size: 0.85rem;
    color: var(--color-text-muted);
    line-height: 1.6;
}

.product-link-card .arrow {
    display: flex;
    align-items: center;
    gap: 5px;
    margin-top: 12px;
    font-size: 0.85rem;
    color: var(--color-main);
    font-weight: 600;
}

.data-note {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid #eee;
}

@media (max-width: 768px) {
    .article-header {
        padding: 30px 20px;
    }

    .article-header h1 {
        font-size: 1.4rem;
    }

    .content-section {
        padding: 25px 20px;
    }

    .comparison-grid {
        grid-template-columns: 1fr;
    }

    .product-link-grid {
        grid-template-columns: 1fr;
    }
}