:root {
    --theme-color: #347c9b;
    --theme-color-deep: #1e5970;
    --theme-color-soft: #ebf6fb;
    --page-surface: rgba(255, 255, 255, 0.96);
    --page-surface-strong: #ffffff;
    --page-text: #20394a;
    --page-muted: #5e7483;
    --page-border: rgba(52, 124, 155, 0.14);
    --page-shadow: 0 30px 80px rgba(16, 61, 83, 0.12);
    --page-shadow-soft: 0 20px 45px rgba(22, 79, 103, 0.1);
}

.central-page {
    position: relative;
    overflow: hidden;
    background:
        radial-gradient(circle at top left, rgba(52, 124, 155, 0.14), transparent 24%),
        radial-gradient(circle at bottom right, rgba(52, 124, 155, 0.12), transparent 26%),
        linear-gradient(180deg, #edf8fd 0%, #ffffff 100%);
}

.central-page-hero {
    position: relative;
    overflow: hidden;
    padding: 96px 0 180px;
    background:
        linear-gradient(135deg, rgba(52, 124, 155, 0.96), rgba(25, 66, 84, 0.92)),
        url("../img/bg/about.jpg") center/cover no-repeat;
}

.central-page-hero::before,
.central-page-hero::after {
    position: absolute;
    content: "";
    border-radius: 999px;
    pointer-events: none;
}

.central-page-hero::before {
    inset: auto auto -120px -90px;
    width: 280px;
    height: 280px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.2), rgba(255, 255, 255, 0.02));
}

.central-page-hero::after {
    inset: -110px -50px auto auto;
    width: 360px;
    height: 360px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.14), rgba(255, 255, 255, 0.03));
}

.central-page-hero__grid {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: 34px;
    align-items: end;
}

.central-page-hero__title {
    margin: 0 0 18px;
    color: #fff;
    font-size: clamp(40px, 5.8vw, 72px);
    line-height: 0.98;
    letter-spacing: -0.04em;
}

.central-page-hero__description {
    max-width: 720px;
    margin: 0;
    color: rgba(255, 255, 255, 0.9);
    font-size: 19px;
    line-height: 1.9;
}

.central-page-shell {
    position: relative;
    margin-top: -96px;
    padding-bottom: 110px;
}

.central-page-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 320px;
    gap: 28px;
    align-items: start;
}

.central-page-layout--full {
    grid-template-columns: minmax(0, 1fr);
}

.central-page-article {
    padding: 34px;
    border-radius: 34px;
    background: var(--page-surface);
    border: 1px solid rgba(255, 255, 255, 0.65);
    box-shadow: var(--page-shadow);
    backdrop-filter: blur(14px);
}

.central-page-layout--full .central-page-article {
    width: min(100%, 980px);
    max-width: 980px;
    margin-inline: auto;
}

.central-page-article__head {
    margin-bottom: 28px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--page-border);
}

.central-page-article__title {
    margin: 0;
    color: var(--page-text);
    font-size: clamp(28px, 3.8vw, 46px);
    line-height: 1.02;
    letter-spacing: -0.04em;
}

.central-page-content {
    counter-reset: page-section;
    color: var(--page-text);
}

.central-page-content h1,
.central-page-content h3 {
    color: var(--page-text) !important;
    font-weight: 800;
    letter-spacing: -0.03em;
}

.central-page-content h1 {
    display: none;
}

.central-page-content h2 {
    position: relative;
    margin: 36px 0 16px;
    padding: 18px 22px 18px 84px;
    border-radius: 22px;
    background: linear-gradient(135deg, rgba(52, 124, 155, 0.12), rgba(52, 124, 155, 0.03));
    color: var(--theme-color-deep) !important;
    font-size: 24px;
    line-height: 1.45;
    font-weight: 800;
    counter-increment: page-section;
}

.central-page-content h2::before {
    position: absolute;
    inset: 50% auto auto 20px;
    transform: translateY(-50%);
    width: 46px;
    height: 46px;
    border-radius: 16px;
    display: grid;
    place-items: center;
    background: var(--theme-color);
    color: #fff;
    content: counter(page-section, decimal-leading-zero);
    font-size: 14px;
    font-weight: 800;
    box-shadow: 0 14px 30px rgba(52, 124, 155, 0.26);
}

.central-page-content p,
.central-page-content li {
    color: var(--page-muted) !important;
    font-size: 17px;
    line-height: 2;
}

.central-page-content p {
    margin-bottom: 15px;
}

.central-page-content ul,
.central-page-content ol {
    display: grid;
    gap: 12px;
    margin: 0 0 22px !important;
    padding: 0 !important;
    list-style: none !important;
}

.central-page-content li {
    position: relative;
    padding: 18px 20px 18px 56px;
    border-radius: 20px;
    background: linear-gradient(135deg, rgba(52, 124, 155, 0.08), rgba(255, 255, 255, 0.92));
    border: 1px solid rgba(52, 124, 155, 0.12);
    box-shadow: var(--page-shadow-soft);
}

.central-page-content li::before {
    position: absolute;
    inset: 22px auto auto 22px;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: radial-gradient(circle at 35% 35%, #7fc3dd, var(--theme-color));
    content: "";
    box-shadow: 0 0 0 6px rgba(52, 124, 155, 0.1);
}

.central-page-content strong {
    color: var(--page-text);
    font-weight: 800;
}

.central-page-content a {
    color: var(--theme-color-deep);
    font-weight: 800;
    text-decoration: underline;
    text-underline-offset: 4px;
}

.central-page-content a:hover {
    color: var(--theme-color);
}

.central-page-side {
    position: sticky;
    top: 140px;
    display: grid;
    gap: 20px;
}

.central-page-side__card {
    padding: 26px 24px;
    border-radius: 28px;
    background: var(--page-surface-strong);
    border: 1px solid rgba(52, 124, 155, 0.12);
    box-shadow: var(--page-shadow-soft);
}

.central-page-side__title {
    margin: 0 0 12px;
    color: var(--page-text);
    font-size: 24px;
    line-height: 1.12;
    letter-spacing: -0.03em;
}

.central-page-side__nav {
    display: grid;
    gap: 10px;
    margin-top: 18px;
}

.central-page-side__nav a {
    display: block;
    padding: 14px 16px;
    border-radius: 18px;
    background: linear-gradient(135deg, rgba(52, 124, 155, 0.1), rgba(52, 124, 155, 0.04));
    color: var(--page-text);
    font-size: 15px;
    font-weight: 700;
    line-height: 1.6;
}

.central-page-side__nav a:hover {
    color: var(--theme-color-deep);
    transform: translateY(-1px);
}

html[dir="rtl"] .central-page-hero__content,
html[dir="rtl"] .central-page-content,
html[dir="rtl"] .central-page-side__card {
    text-align: right;
}

html[dir="rtl"] .central-page-content h2 {
    padding: 18px 84px 18px 22px;
}

html[dir="rtl"] .central-page-content h2::before {
    inset: 50% 20px auto auto;
}

html[dir="rtl"] .central-page-content li {
    padding: 18px 56px 18px 20px;
}

html[dir="rtl"] .central-page-content li::before {
    inset: 22px 22px auto auto;
}

@media (max-width: 1199px) {
    .central-page-layout {
        grid-template-columns: 1fr;
    }

    .central-page-layout--full .central-page-article {
        width: 100%;
        max-width: 100%;
    }

    .central-page-side {
        position: static;
        order: -1;
    }

    .central-page-shell {
        margin-top: -78px;
    }
}

@media (max-width: 991px) {
    .central-page-hero {
        padding: 78px 0 130px;
    }

    .central-page-hero__content {
        max-width: 760px;
    }

    .central-page-hero__description {
        font-size: 17px;
        line-height: 1.85;
    }

    .central-page-article {
        padding: 24px;
        border-radius: 26px;
    }

    .central-page-article__head {
        margin-bottom: 22px;
        padding-bottom: 18px;
    }

    .central-page-shell {
        padding-bottom: 86px;
    }
}

@media (max-width: 767px) {
    .central-page-hero {
        padding: 56px 0 118px;
    }

    .central-page-hero__title {
        font-size: clamp(34px, 10vw, 52px);
    }

    .central-page-side__card {
        padding: 20px 18px;
        border-radius: 22px;
    }

    .central-page-layout {
        gap: 18px;
    }

    .central-page-article {
        padding: 20px 16px;
        border-radius: 22px;
    }

    .central-page-article__title {
        font-size: 32px;
    }

    .central-page-content h2 {
        padding: 70px 18px 18px;
        font-size: 21px;
    }

    .central-page-content h2::before {
        inset: 16px auto auto 18px;
        transform: none;
    }

    html[dir="rtl"] .central-page-content h2 {
        padding: 70px 18px 18px;
    }

    html[dir="rtl"] .central-page-content h2::before {
        inset: 16px auto auto 18px;
    }

    .central-page-content li,
    html[dir="rtl"] .central-page-content li {
        padding: 18px 16px 18px 48px;
    }

    .central-page-content li::before,
    html[dir="rtl"] .central-page-content li::before {
        inset: 21px auto auto 18px;
    }
}

@media (max-width: 479px) {
    .central-page-content p,
    .central-page-content li {
        font-size: 15px;
    }

    .central-page-side__nav a {
        font-size: 14px;
    }
}