.about-hero {
    display: grid;
    grid-template-columns: 320px minmax(0, 1fr);
    gap: 28px;
    margin-bottom: 18px;
    padding: 24px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.72);
}

.about-hero__photo {
    position: relative;
    overflow: hidden;
    border-radius: 22px;
    min-height: 380px;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.08), rgba(96, 165, 250, 0.18));
    border: 1px solid var(--line);
}

.about-hero__content {
    display: flex;
    flex-direction: column;
    justify-content: center;
    min-width: 0;
}

.about-role {
    margin: -4px 0 14px;
    font-size: 20px;
    line-height: 1.5;
    color: var(--primary);
    font-weight: 600;
    max-width: 760px;
}

.about-role-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 18px;
}

.about-hero__actions {
    margin-top: 18px;
}

.about-hero__photo--placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    background:
        linear-gradient(135deg, rgba(37, 99, 235, 0.08), rgba(96, 165, 250, 0.18)),
        repeating-linear-gradient(
            45deg,
            rgba(255, 255, 255, 0.28),
            rgba(255, 255, 255, 0.28) 12px,
            rgba(255, 255, 255, 0.12) 12px,
            rgba(255, 255, 255, 0.12) 24px
        );
}

.about-photo-placeholder {
    width: 100%;
    min-height: 100%;
    border: 1px dashed rgba(37, 99, 235, 0.28);
    border-radius: 18px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 28px 20px;
    background: rgba(255, 255, 255, 0.38);
}

.about-photo-placeholder__avatar {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 108px;
    height: 108px;
    border-radius: 50%;
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.86);
    color: var(--primary);
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 18px;
}

.about-photo-placeholder__name {
    font-size: 18px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 8px;
}

.about-photo-placeholder__caption {
    font-size: 14px;
    line-height: 1.6;
    color: var(--soft);
    max-width: 220px;
}

/* tabs */
.about-tabs {
    margin-top: 18px;
}

.about-tabs__nav {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 18px;
}

.about-tabs__button {
    appearance: none;
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.74);
    color: var(--soft);
    border-radius: 14px;
    padding: 12px 16px;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    transition:
        transform 0.22s ease,
        background 0.22s ease,
        color 0.22s ease,
        border-color 0.22s ease,
        box-shadow 0.22s ease;
    font-weight: 600;
}

.about-tabs__button:hover {
    transform: translateY(-1px);
    color: var(--text);
    background: rgba(255, 255, 255, 0.92);
}

.about-tabs__button.is-active {
    color: var(--text);
    background: rgba(255, 255, 255, 0.96);
    border-color: rgba(37, 99, 235, 0.24);
    box-shadow: 0 8px 24px rgba(37, 99, 235, 0.08);
}

.about-tabs__button-icon {
    width: 24px;
    height: 24px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    background: rgba(37, 99, 235, 0.10);
    color: var(--primary);
    flex-shrink: 0;
    transition:
        transform 0.28s ease,
        background 0.22s ease,
        color 0.22s ease,
        box-shadow 0.22s ease;
    transform-origin: center;
}

.about-tabs__button:hover .about-tabs__button-icon {
    transform: scale(1.08) rotate(-4deg);
}

.about-tabs__button.is-active .about-tabs__button-icon {
    background: rgba(37, 99, 235, 0.16);
    box-shadow: 0 6px 18px rgba(37, 99, 235, 0.12);
    transform: scale(1.06);
}

.about-tabs__panel {
    display: none;
    padding: 20px;
    border-radius: 18px;
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.78);
    animation: aboutFadeIn 0.28s ease;
    transform-origin: top center;
}

.about-tabs__panel.is-active {
    display: block;
}

.about-tabs__panel-header {
    display: grid;
    grid-template-columns: 52px minmax(0, 1fr);
    gap: 16px;
    align-items: start;
    margin-bottom: 18px;
}

.about-tabs__panel-icon {
    width: 52px;
    height: 52px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 14px;
    background: rgba(37, 99, 235, 0.10);
    color: var(--primary);
    font-size: 24px;
    font-weight: 700;
    transition:
        transform 0.3s ease,
        box-shadow 0.22s ease,
        background 0.22s ease;
}

.about-tabs__panel.is-active .about-tabs__panel-icon {
    transform: translateY(-1px) scale(1.04);
    background: rgba(37, 99, 235, 0.14);
    box-shadow: 0 10px 24px rgba(37, 99, 235, 0.10);
}

.about-tabs__panel-title {
    margin: 0 0 8px;
    font-size: 24px;
    line-height: 1.2;
}

.about-tabs__panel-text {
    margin: 0;
    color: var(--muted);
    line-height: 1.75;
    font-size: 16px;
}

@keyframes aboutFadeIn {
    from {
        opacity: 0;
        transform: translateY(8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.competency-list {
    display: grid;
    gap: 12px 18px;
}

.competency-list--single {
    grid-template-columns: 1fr 1fr;
    margin-top: 18px;
}

.competency-list__item {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 14px 16px;
    border-radius: 14px;
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.72);
    color: var(--muted);
    line-height: 1.6;
    font-size: 15px;
    min-width: 0;
}

.competency-list__dot {
    width: 8px;
    height: 8px;
    margin-top: 8px;
    border-radius: 50%;
    flex-shrink: 0;
    background: var(--primary);
}

/* accordion */
.about-accordion {
    margin-top: 8px;
    display: grid;
    gap: 12px;
}

.about-accordion__item {
    border: 1px solid var(--line);
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.78);
    overflow: hidden;
    transition:
        box-shadow 0.24s ease,
        border-color 0.24s ease,
        transform 0.24s ease;
}

.about-accordion__item:hover {
    box-shadow: 0 10px 26px rgba(37, 99, 235, 0.06);
}

.about-accordion__item.is-open {
    border-color: rgba(37, 99, 235, 0.20);
    box-shadow: 0 12px 28px rgba(37, 99, 235, 0.08);
}

.about-accordion__trigger {
    appearance: none;
    width: 100%;
    border: 0;
    background: transparent;
    padding: 18px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    cursor: pointer;
    text-align: left;
}

.about-accordion__title {
    font-size: 18px;
    font-weight: 700;
    color: var(--text);
}

.about-accordion__icon {
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    border-radius: 10px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: rgba(37, 99, 235, 0.10);
    color: var(--primary);
    font-size: 18px;
    font-weight: 700;
    transition:
        transform 0.26s ease,
        background 0.22s ease,
        box-shadow 0.22s ease;
}

.about-accordion__item:hover .about-accordion__icon {
    background: rgba(37, 99, 235, 0.14);
}

.about-accordion__item.is-open .about-accordion__icon {
    transform: rotate(45deg) scale(1.05);
    box-shadow: 0 8px 18px rgba(37, 99, 235, 0.10);
}

.about-accordion__content {
    border-top: 1px solid var(--line);
    overflow: hidden;
    transition:
        max-height 0.34s ease,
        opacity 0.26s ease;
    will-change: max-height, opacity;
}

.about-accordion__content-inner {
    padding: 18px 20px 20px;
    color: var(--muted);
    line-height: 1.75;
    font-size: 16px;
}

/* contacts */
.contact-intro {
    max-width: 920px;
}

.contact-block {
    margin-top: 20px;
    padding: 22px;
    border-radius: 18px;
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.78);
    transition:
        transform 0.24s ease,
        box-shadow 0.24s ease,
        border-color 0.24s ease;
}

.contact-block:hover {
    transform: translateY(-2px);
    box-shadow: 0 14px 30px rgba(37, 99, 235, 0.08);
    border-color: rgba(37, 99, 235, 0.18);
}

.contact-block__email {
    display: inline-block;
    font-size: 38px;
    line-height: 1.1;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 14px;
    word-break: break-word;
    transition:
        color 0.22s ease,
        transform 0.22s ease;
}

.contact-block__email:hover {
    color: var(--text);
    transform: translateX(2px);
}

.contact-block__text {
    margin: 0;
    color: var(--muted);
    line-height: 1.75;
    font-size: 16px;
    max-width: 860px;
}

.contact-block__actions {
    margin-top: 18px;
}

/* >= 1400 */
@media (min-width: 1400px) {
    .about-hero {
        grid-template-columns: 340px minmax(0, 1fr);
    }
}

/* <= 1199 */
@media (max-width: 1199.98px) {
    .about-hero {
        grid-template-columns: 280px minmax(0, 1fr);
    }
}

/* <= 991 */
@media (max-width: 991.98px) {
    .about-hero {
        grid-template-columns: 1fr;
    }

    .about-hero__photo {
        min-height: 300px;
    }

    .competency-list--single {
        grid-template-columns: 1fr;
    }

    .about-role {
        max-width: 100%;
    }
}

/* <= 767 */
@media (max-width: 767.98px) {
    .about-role {
        font-size: 18px;
    }

    .about-tabs__panel-header {
        grid-template-columns: 1fr;
    }

    .contact-block__email {
        font-size: 30px;
    }
}

/* < 576 */
@media (max-width: 575.98px) {
    .about-hero,
    .content-section,
    .contact-block {
        padding: 18px;
    }

    .about-hero__photo {
        min-height: 240px;
    }

    .about-role {
        font-size: 17px;
        line-height: 1.45;
    }

    .about-tabs__nav {
        flex-direction: column;
    }

    .about-tabs__button {
        width: 100%;
        justify-content: flex-start;
    }

    .contact-block__email {
        font-size: 24px;
        line-height: 1.2;
    }

    .contact-block__actions {
        flex-direction: column;
    }
}

@media (prefers-reduced-motion: no-preference) {
    .about-photo-placeholder__avatar {
        animation: aboutAvatarFloat 4.2s ease-in-out infinite;
    }

    .about-tabs__button-icon,
    .about-tabs__panel-icon,
    .about-accordion__icon {
        will-change: transform;
    }
}

@keyframes aboutAvatarFloat {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-4px);
    }
}