.ara-body{opacity:.88;max-width:48ch;margin:1.2rem 0 1.6rem;font-size:1.02rem;line-height:1.68}.ara-body+.btn{margin-top:.6rem}.ara-concept{border:1px solid var(--color-border-muted);background:var(--color-canvas-default);border-radius:14px;max-width:1100px;margin:2.4rem 0 0;position:relative;overflow:hidden}.ara-concept-head{border-bottom:1px solid var(--color-border-muted);background:var(--color-canvas-subtle);align-items:center;gap:10px;padding:12px 16px;display:flex}.ara-concept-badge{background:var(--color-charcoal);color:#fff;letter-spacing:.14em;text-transform:uppercase;border-radius:999px;padding:5px 11px;font-size:.64rem;font-weight:700}.ara-concept-head-note{letter-spacing:.02em;color:var(--color-fg-muted);font-size:.8rem}.ara-concept-cap{border-top:1px solid var(--color-border-muted);background:var(--color-canvas-subtle);color:var(--color-fg-muted);padding:14px 20px 16px;font-size:.86rem;line-height:1.6}.ara-faq{flex-direction:column;gap:.6rem;max-width:70ch;margin-top:1.4rem;display:flex}.ara-faq-item{border:1px solid #7f7f7f3d;border-radius:8px;padding:.9rem 1.15rem}.ara-faq-item summary{cursor:pointer;font-size:1.01rem;font-weight:600}.ara-faq-item summary:focus-visible{outline-offset:3px;outline:2px solid}.ara-faq-more-title{letter-spacing:-.02em;margin:2.6rem 0 0;font-size:1.15rem;font-weight:700}.ara-faq-item p{opacity:.87;max-width:64ch;margin:.8rem 0 0;line-height:1.65}@media (max-width:640px){.ara-concept-cap{padding:12px 16px 14px}}