/* Примечание: стартовая страница с переключением режимов (persona). */
.about-hero {
    text-align: center;
    padding: 2rem 0 1.5rem;
}

.about-hero__title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.about-hero__lead {
    color: var(--crm-muted);
    font-size: 1.05rem;
    max-width: 42rem;
    margin: 0 auto 1.25rem;
}

.about-demo-accounts {
    max-width: min(100%, calc(var(--about-tile-width, 20.75rem) * 3 + 2rem));
    margin: 0 auto 1.5rem;
    text-align: left;
}

.about-demo-accounts__title {
    text-align: center;
    letter-spacing: 0.04em;
    margin-bottom: 0.35rem;
}

.about-demo-accounts__lead {
    text-align: center;
    max-width: 40rem;
    margin: 0 auto 1rem;
}

.about-demo-accounts__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.85rem;
}

@media (min-width: 768px) {
    .about-demo-accounts__grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (min-width: 992px) {
    .about-demo-accounts__grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

.about-demo-account-card {
    background: var(--crm-white);
    border: 1px solid var(--crm-border);
    border-radius: 0.75rem;
    padding: 1rem 1.05rem;
    height: 100%;
    box-shadow: 0 1px 3px rgba(31, 41, 55, 0.05);
}

.about-demo-account-card__badge {
    display: inline-block;
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    color: var(--crm-blue-dark);
    background: var(--crm-blue-light);
    border-radius: 999px;
    padding: 0.2rem 0.55rem;
    margin-bottom: 0.55rem;
}

.about-demo-account-card__title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.35rem;
}

.about-demo-account-card__text {
    font-size: 0.84rem;
    color: var(--crm-muted);
    line-height: 1.45;
    margin-bottom: 0.75rem;
}

.about-demo-account-card__creds dd code {
    font-size: 0.82rem;
}

.about-persona-switch {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.25rem;
}

.about-persona-switch__btn {
    border: 1px solid var(--crm-border);
    background: var(--crm-white);
    color: var(--crm-text);
    border-radius: 999px;
    padding: 0.45rem 1.1rem;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.15s, border-color 0.15s, color 0.15s;
}

.about-persona-switch__btn:hover {
    border-color: var(--crm-blue);
    color: var(--crm-blue-dark);
}

.about-persona-switch__btn.is-active {
    background: var(--crm-blue);
    border-color: var(--crm-blue);
    color: #fff;
}

.about-settings-hint {
    max-width: 52rem;
    margin: 0 auto 1.5rem;
    font-size: 0.88rem;
}

.about-persona-intro {
    max-width: 52rem;
    margin: 0 auto 1.5rem;
    text-align: center;
}

.about-persona-intro__title {
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 0.35rem;
}

.about-persona-intro__text {
    color: var(--crm-muted);
    font-size: 0.92rem;
    margin: 0;
}

/* Плитки возможностей: 1 / 2 / 3 в ряд, без растягивания на весь экран */
.about-features {
    --about-tile-width: 20.75rem;
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
    width: 100%;
    max-width: min(100%, var(--about-tile-width));
    margin: 0 auto 2rem;
    justify-content: center;
}

@media (min-width: 768px) {
    .about-features {
        max-width: min(100%, calc(var(--about-tile-width) * 2 + 1rem));
        grid-template-columns: repeat(2, minmax(0, var(--about-tile-width)));
    }
}

@media (min-width: 992px) {
    .about-features {
        max-width: min(100%, calc(var(--about-tile-width) * 3 + 2rem));
        grid-template-columns: repeat(3, minmax(0, var(--about-tile-width)));
    }
}

.about-feature-card {
    background: var(--crm-white);
    border: 1px solid var(--crm-border);
    border-radius: 0.75rem;
    padding: 1.15rem 1.2rem;
    height: 100%;
    max-width: var(--about-tile-width);
    width: 100%;
    margin-inline: auto;
    box-shadow: 0 1px 3px rgba(31, 41, 55, 0.05);
}

.about-feature-card__icon {
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 0.5rem;
    background: var(--crm-blue-light);
    color: var(--crm-blue-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.72rem;
    font-weight: 800;
    letter-spacing: 0.02em;
    margin-bottom: 0.65rem;
}

.about-feature-card__title {
    font-size: 0.98rem;
    font-weight: 600;
    margin-bottom: 0.4rem;
}

.about-feature-card__text {
    font-size: 0.84rem;
    color: var(--crm-muted);
    margin: 0;
    line-height: 1.45;
}

.about-persona-panel[hidden] {
    display: none !important;
}

[data-theme="dark"] .about-persona-switch__btn {
    background: rgba(16, 32, 62, 0.72);
}

[data-theme="dark"] .about-persona-switch__btn.is-active {
    background: var(--crm-blue);
}

[data-theme="dark"] .about-feature-card {
    background: rgba(16, 32, 62, 0.72);
    box-shadow: none;
}

[data-theme="dark"] .about-feature-card__icon {
    background: rgba(79, 124, 255, 0.2);
    color: #8cb4ff;
}

[data-theme="dark"] .about-demo-account-card {
    background: rgba(16, 32, 62, 0.72);
    box-shadow: none;
}

[data-theme="dark"] .about-demo-account-card__badge {
    background: rgba(79, 124, 255, 0.2);
    color: #8cb4ff;
}