:root {
            --green-bg: #d0fbd1;
            --green-light: #ecfdeb;
            --green-dark: #305c32;
            --blue: #4972b4;
            --blue-dark: #35316f;
            --blue-slate: #505f87;
            --border: #7e9db9;
            --teal: #578fa1;
            --cream: #ffffcc;
            --text: #333;
        }

        * {
            box-sizing: border-box;
        }

        html {
            -webkit-text-size-adjust: 100%;
        }

        body {
            margin: 0;
            padding: 24px 12px;
            font-family: Arial, Verdana, "Lucida Grande", Tahoma, Helvetica, sans-serif;
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: #73add7 linear-gradient(180deg, #5f9ccb 0%, #8fc0e2 100%) fixed;
            min-height: 100vh;
        }

        .page {
            max-width: 1000px;
            margin: 0 auto;
            background: var(--green-bg);
            border: 1px solid #656565;
            border-radius: 12px;
            box-shadow: 0 10px 30px rgba(29, 55, 87, 0.25);
            overflow: hidden;
        }

        header.site-header {
            background: linear-gradient(135deg, #ffffff 0%, var(--green-light) 100%);
            border-bottom: 3px solid var(--teal);
            padding: 36px 28px;
            text-align: center;
        }

        header.site-header h1 {
            margin: 0;
            font-size: clamp(1.5rem, 4vw, 2.4rem);
            line-height: 1.25;
            color: var(--blue-slate);
            font-weight: bold;
            letter-spacing: 0.3px;
        }

        main {
            padding: 28px;
        }

        article {
            background: #fff;
            border: 1px solid var(--border);
            border-left: 6px solid var(--teal);
            border-radius: 10px;
            padding: 28px;
            margin-bottom: 28px;
            overflow-wrap: break-word;
            word-wrap: break-word;
        }

        article h2,
        article h3,
        article h4 {
            color: var(--blue-slate);
            line-height: 1.3;
            margin: 1.4em 0 0.6em;
        }

        article h2 {
            font-size: 1.6rem;
            border-bottom: 2px solid var(--green-bg);
            padding-bottom: 6px;
        }

        article h3 {
            font-size: 1.3rem;
        }

        article h4 {
            font-size: 1.1rem;
        }

        article > :first-child {
            margin-top: 0;
        }

        article p {
            margin: 0 0 1.1em;
        }

        article ul,
        article ol {
            padding-left: 1.5em;
            margin: 0 0 1.1em;
        }

        article li {
            margin-bottom: 0.4em;
        }

        article img {
            max-width: 100%;
            height: auto;
        }

        article table {
            display: block;
            max-width: 100%;
            overflow-x: auto;
            border-collapse: collapse;
        }

        article table td,
        article table th {
            border: 1px solid var(--border);
            padding: 8px 10px;
        }

        a {
            color: var(--blue);
            text-decoration: none;
        }

        a:hover {
            color: var(--blue-dark);
            text-decoration: underline;
        }

        .transition {
            background: var(--cream);
            border: 1px solid var(--teal);
            border-left: 6px solid var(--teal);
            border-radius: 10px;
            padding: 22px 28px;
            margin-bottom: 28px;
            overflow-wrap: break-word;
            word-wrap: break-word;
        }

        .transition p {
            margin: 0 0 1em;
        }

        .transition > :last-child {
            margin-bottom: 0;
        }

        .links-block {
            background: var(--green-light);
            border: 1px solid var(--border);
            border-radius: 10px;
            padding: 24px 28px;
            overflow-wrap: break-word;
            word-wrap: break-word;
        }

        .links-block h3 {
            margin: 1.4em 0 0.7em;
            padding-bottom: 6px;
            font-size: 1.2rem;
            color: var(--blue-slate);
            border-bottom: 2px solid var(--teal);
        }

        .links-block h3:first-child {
            margin-top: 0;
        }

        .links-block ul {
            list-style: none;
            margin: 0 0 1em;
            padding: 0;
            column-count: 2;
            column-gap: 32px;
        }

        .links-block li {
            break-inside: avoid;
            -webkit-column-break-inside: avoid;
            page-break-inside: avoid;
            padding: 6px 0;
            border-bottom: 1px dotted #b5c9d8;
            font-size: 0.95rem;
            line-height: 1.5;
        }

        footer.site-footer {
            background: #fff;
            border-top: 3px solid var(--teal);
            padding: 22px 28px;
            text-align: center;
            color: var(--blue-slate);
            font-size: 0.9rem;
        }

        footer.site-footer p {
            margin: 0;
        }

        @media (max-width: 768px) {
            body {
                padding: 12px 8px;
                font-size: 15px;
            }

            header.site-header {
                padding: 26px 16px;
            }

            main {
                padding: 16px;
            }

            article,
            .transition,
            .links-block {
                padding: 18px;
            }
        }

        @media (max-width: 560px) {
            .links-block ul {
                column-count: 1;
            }
        }