.appcenter-page {
    min-height: 100vh;
    color: var(--artelv-color-text);
    background:
        radial-gradient(circle at 10% 0, rgba(40, 114, 73, 0.08), transparent 28rem),
        linear-gradient(180deg, var(--artelv-color-surface) 0, var(--artelv-color-card) 36rem);
    font-family: var(--artelv-font-main);
    font-size: 16px;
    line-height: 1.65;
}

.appcenter {
    width: auto;
    min-width: 0;
    margin: 0;
    padding: 0;
    color: var(--artelv-color-text);
    font-family: var(--artelv-font-main);
    overflow-wrap: anywhere;
}

.appcenter *,
.appcenter *::before,
.appcenter *::after {
    box-sizing: border-box;
}

.appcenter h2,
.appcenter h3,
.appcenter p,
.appcenter ul,
.appcenter figure {
    margin-top: 0;
}

.appcenter__lead {
    margin: 0 0 28px;
    color: var(--artelv-color-text);
    font-size: 18px;
    font-weight: 500;
    line-height: 1.75;
}

.appcenter-accordion {
    width: 100%;
}

.appcenter-accordion-item {
    margin: 0 0 20px;
    border-radius: calc(var(--artelv-radius-card) * 2);
    background: var(--artelv-color-card);
    box-shadow: var(--artelv-shadow-card);
}

.appcenter-accordion-header {
    display: flex;
    width: 100%;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    padding: 22px 34px;
    border: 1px solid var(--artelv-color-border);
    border-radius: calc(var(--artelv-radius-card) * 2);
    color: var(--artelv-color-heading);
    background: var(--artelv-color-card);
    font-family: var(--artelv-font-accent);
    font-size: clamp(20px, 2.2vw, 30px);
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.025em;
    text-align: left;
    text-transform: uppercase;
    cursor: pointer;
    transition: border-color 0.2s ease, background 0.2s ease, color 0.2s ease;
}

.appcenter-accordion-header:hover,
.appcenter-accordion-header:focus-visible {
    border-color: rgba(40, 114, 73, 0.45);
    outline: none;
}

.appcenter-accordion-item.active .appcenter-accordion-header {
    border-color: var(--artelv-color-heading);
    border-radius: calc(var(--artelv-radius-card) * 2) calc(var(--artelv-radius-card) * 2) 0 0;
    color: var(--artelv-color-card);
    background: var(--artelv-color-heading);
}

.appcenter-accordion-title {
    min-width: 0;
}

.appcenter-accordion-icon {
    display: grid;
    flex: 0 0 auto;
    width: 40px;
    height: 40px;
    place-items: center;
    border-radius: 50%;
    color: var(--artelv-color-card);
    background: var(--artelv-color-accent);
    font-family: var(--artelv-font-main);
    font-size: 28px;
    font-weight: 600;
    line-height: 1;
}

.appcenter-accordion-item.active .appcenter-accordion-icon {
    color: var(--artelv-color-heading);
    background: var(--artelv-color-card);
}

.appcenter-accordion-content {
    max-height: 0;
    overflow: hidden;
    border: 1px solid var(--artelv-color-border);
    border-top: 0;
    border-radius: 0 0 calc(var(--artelv-radius-card) * 2) calc(var(--artelv-radius-card) * 2);
    background: var(--artelv-color-card);
    transition: max-height 0.32s ease;
}

.appcenter-update {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(260px, 420px);
    gap: 34px;
    align-items: center;
    padding: 30px 34px 34px;
}

.appcenter-update__main {
    min-width: 0;
}

.appcenter-update__summary {
    margin-bottom: 24px;
}

.appcenter-update__eyebrow {
    width: fit-content;
    margin-bottom: 14px;
    padding: 6px 10px;
    border-radius: 999px;
    color: var(--artelv-color-card);
    background: var(--artelv-color-accent);
    font-size: 12px;
    font-weight: 800;
    line-height: 1;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.appcenter-update h2 {
    margin-bottom: 14px;
    color: var(--artelv-color-heading);
    font-family: var(--artelv-font-accent);
    font-size: clamp(23px, 2.5vw, 34px);
    font-weight: 800;
    line-height: 1.12;
    letter-spacing: -0.03em;
}

.appcenter-update p {
    margin-bottom: 0;
    color: var(--artelv-color-muted);
}

.appcenter-accordion-content__about-app {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
    margin: 0 0 22px;
    padding: 0;
    list-style: none;
}

.appcenter-accordion-content__about-app li {
    min-width: 0;
    padding: 14px 16px;
    border: 1px solid var(--artelv-color-border);
    border-radius: var(--artelv-radius-card);
    background: var(--artelv-color-surface);
}

.appcenter-accordion-content__about-app span {
    display: block;
    margin-bottom: 6px;
    color: var(--artelv-color-muted);
    font-size: 13px;
    font-weight: 600;
}

.appcenter-accordion-content__about-app strong {
    display: block;
    color: var(--artelv-color-heading);
    font-size: 16px;
    font-weight: 800;
    line-height: 1.25;
}

.appcenter-accordion-content__button-wrapper {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.appcenter-button {
    display: inline-flex;
    min-height: 46px;
    min-width: 180px;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 11px 18px;
    border: 1px solid var(--artelv-color-heading);
    border-radius: var(--artelv-radius-button);
    color: var(--artelv-color-heading);
    font-size: 14px;
    font-weight: 800;
    line-height: 1.25;
    text-align: center;
    text-decoration: none;
    text-transform: uppercase;
    transition: border-color 0.2s ease, background 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.appcenter-button:hover,
.appcenter-button:focus-visible {
    color: var(--artelv-color-card);
    background: var(--artelv-color-heading);
    outline: none;
    transform: translateY(-1px);
}

.appcenter-button--primary {
    color: var(--artelv-color-card);
    background: var(--artelv-color-heading);
}

.appcenter-button--primary:hover,
.appcenter-button--primary:focus-visible {
    border-color: #f3e3cd;
    color: var(--artelv-color-heading);
    background: #f3e3cd;
}

.appcenter-button svg {
    flex: 0 0 auto;
    width: 24px;
    height: 24px;
    fill: none;
}

.appcenter-accordion-content__image-wrapper {
    display: flex;
    min-width: 0;
    justify-content: center;
    margin: 0;
    padding: 22px;
    border-radius: calc(var(--artelv-radius-card) * 2);
    background:
        radial-gradient(circle at 50% 35%, rgba(40, 114, 73, 0.14), transparent 58%),
        var(--artelv-color-surface);
}

.appcenter-accordion-content__image-wrapper img {
    display: block;
    width: 100%;
    max-width: 380px;
    height: auto;
    object-fit: contain;
}

.appcenter-changelog {
    display: grid;
    gap: 18px;
    padding: 0 34px 34px;
}

.appcenter-version {
    padding: 24px 28px;
    border: 1px solid var(--artelv-color-border);
    border-radius: calc(var(--artelv-radius-card) * 2);
    background: var(--artelv-color-card);
}

.appcenter-version--latest {
    border-color: rgba(40, 114, 73, 0.24);
    background: var(--artelv-color-surface);
}

.appcenter-version h3 {
    margin-bottom: 18px;
    color: var(--artelv-color-heading);
    font-size: clamp(18px, 2vw, 24px);
    font-weight: 800;
    line-height: 1.25;
}

.appcenter-version ul {
    display: grid;
    gap: 10px;
    margin-bottom: 0;
    padding: 0;
    list-style: none;
}

.appcenter-version li {
    position: relative;
    padding-left: 24px;
    color: var(--artelv-color-text);
}

.appcenter-version li::before {
    position: absolute;
    top: 0.82em;
    left: 1px;
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--artelv-color-accent);
    content: "";
    transform: translateY(-50%);
}

@media (max-width: 1199px) {
    .appcenter-update {
        grid-template-columns: minmax(0, 1fr) minmax(220px, 320px);
    }

    .appcenter-accordion-content__about-app {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 991px) {
    .appcenter-update {
        grid-template-columns: 1fr;
    }

    .appcenter-accordion-content__image-wrapper {
        order: -1;
    }
}

@media (max-width: 720px) {
    .appcenter-page,
    .appcenter {
        font-size: 15px;
        line-height: 1.6;
    }

    .appcenter__lead {
        margin-bottom: 22px;
        font-size: 16px;
        line-height: 1.6;
    }

    .appcenter-accordion-header {
        gap: 14px;
        padding: 18px 16px;
        font-size: 19px;
    }

    .appcenter-accordion-icon {
        width: 34px;
        height: 34px;
        font-size: 23px;
    }

    .appcenter-update {
        gap: 22px;
        padding: 22px 16px 26px;
    }

    .appcenter-update h2 {
        font-size: 22px;
    }

    .appcenter-accordion-content__about-app {
        grid-template-columns: 1fr;
    }

    .appcenter-accordion-content__button-wrapper {
        flex-direction: column;
    }

    .appcenter-button {
        width: 100%;
        min-width: 0;
    }

    .appcenter-changelog {
        gap: 14px;
        padding: 0 16px 24px;
    }

    .appcenter-version {
        padding: 20px 16px;
    }

    .appcenter-version h3 {
        font-size: 18px;
    }
}

@media (max-width: 360px) {
    .appcenter-accordion-header {
        font-size: 17px;
    }

    .appcenter-update h2 {
        font-size: 20px;
    }

    .appcenter-version h3 {
        font-size: 17px;
    }
}

@media (prefers-reduced-motion: reduce) {
    .appcenter-accordion-content,
    .appcenter-button {
        transition: none;
    }
}