/* =============================================================
   Home — FAQ（手风琴）
============================================================= */
.home-faq {
    --section-overlay: transparent;
}

.home-faq .nd-section__inner {
    max-width: 800px;
    margin: 0 auto;
    padding: 64px 24px 72px;
}

.home-faq__head {
    margin-bottom: 36px;
    text-align: center;
}

.home-faq__title {
    margin: 0 0 8px;
    font-family: var(--font-serif);
    font-size: clamp(24px, 3.2vw, 32px);
    font-weight: 700;
    color: var(--color-primary);
}

.home-faq__subtitle {
    margin: 0;
    font-size: 15px;
    color: var(--color-text-muted);
}

.home-faq__list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.home-faq-item {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

.home-faq-item.is-open {
    border-color: var(--color-accent-light);
    box-shadow: var(--shadow-sm);
}

.home-faq-item__question {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 16px;
    width: 100%;
    padding: 18px 20px;
    font-family: var(--font-sans);
    font-size: 15px;
    font-weight: 600;
    text-align: left;
    color: var(--color-primary);
    background: none;
    border: none;
    cursor: pointer;
}

.home-faq-item__icon {
    flex-shrink: 0;
    width: 20px;
    height: 20px;
    margin-top: 2px;
    position: relative;
    transition: transform 0.3s ease;
}

.home-faq-item__icon::before,
.home-faq-item__icon::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    background: var(--color-accent);
    transform: translate(-50%, -50%);
    transition: transform 0.3s ease;
}

.home-faq-item__icon::before {
    width: 12px;
    height: 2px;
}

.home-faq-item__icon::after {
    width: 2px;
    height: 12px;
}

.home-faq-item.is-open .home-faq-item__icon::after {
    transform: translate(-50%, -50%) rotate(90deg);
    opacity: 0;
}

.home-faq-item__answer {
    display: none;
    padding: 0 20px 18px;
    font-size: 14px;
    line-height: 1.75;
    color: var(--color-text-muted);
}

.home-faq-item.is-open .home-faq-item__answer {
    display: block;
}

.home-faq__more {
    margin: 28px 0 0;
    text-align: center;
}

.home-faq__more-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    font-weight: 600;
    color: var(--color-accent-hover);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: color 0.25s ease, border-color 0.25s ease;
}

.home-faq__more-link:hover {
    color: var(--color-primary);
    border-bottom-color: var(--color-accent);
}

.home-faq__more-link::after {
    content: '→';
    transition: transform 0.25s ease;
}

.home-faq__more-link:hover::after {
    transform: translateX(3px);
}

@media (max-width: 768px) {
    .home-faq .nd-section__inner {
        padding: 48px 20px 56px;
    }
}