.about-modal {
    position: fixed;
    inset: 0;
    z-index: 2000;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding-top: 10vh;
    padding-bottom: 5vh;
}

.about-modal[hidden] { display: none; }

.about-modal__backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.45);
    backdrop-filter: blur(2px);
}

.about-modal__panel {
    position: relative;
    width: min(560px, 92vw);
    max-height: 80vh;
    display: flex;
    flex-direction: column;
    background: var(--color-surface);
    border-radius: 12px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    overflow: hidden;
}

.about-modal__close {
    position: absolute;
    top: var(--space-xs);
    right: var(--space-sm);
    background: none;
    border: none;
    font-size: 1.75rem;
    line-height: 1;
    cursor: pointer;
    color: var(--color-text-muted);
    padding: 4px 8px;
    z-index: 1;
}
.about-modal__close:hover { color: var(--color-text); }

.about-modal__header {
    padding: var(--space-lg) var(--space-lg) 0 var(--space-lg);
}

.about-modal__title {
    margin: 0;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
}

.about-modal__body {
    flex: 1;
    overflow-y: auto;
    padding: var(--space-md) var(--space-lg) var(--space-lg) var(--space-lg);
}

.about-modal__logo {
    margin: var(--space-md) 0;
}

.about-modal__logo-img {
    max-height: 56px;
    max-width: 100%;
    object-fit: contain;
}

.about-modal__text {
    margin: 0 0 var(--space-md) 0;
    line-height: 1.55;
    font-size: 0.9375rem;
}

.about-modal__text .a4h-highlight {
    color: var(--color-primary);
    font-weight: 600;
}

/* Accordion polish */
.about-modal__accordion {
    margin-top: var(--space-md);
}

.about-modal__accordion .accordion-button {
    font-weight: 600;
    font-size: 0.95rem;
}

.about-meta {
    display: grid;
    grid-template-columns: max-content 1fr;
    gap: var(--space-xs) var(--space-md);
    font-size: 0.875rem;
    margin: 0 0 var(--space-md) 0;
}

.about-meta dt {
    color: var(--color-text-muted);
    font-weight: 500;
}

.about-meta dd {
    margin: 0;
    font-family: monospace;
}

.about-disclaimer {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    font-style: italic;
    line-height: 1.5;
    margin: 0;
}