body {
        font-family: Arial, sans-serif;
        margin: 0;
        padding: 0;
        padding-top: 70px;
        background: var(--bg-color);
        color: var(--text-color);
        min-height: 100vh;
        display: flex;
        flex-direction: column;
    }

    header {
        background: linear-gradient(to bottom, var(--header-bg), var(--bg-color));
        color: var(--text-color);
        text-align: center;
        padding: 1.5rem 1rem;
    }

    .sitemap-hero {
        margin: 0 auto 1.2rem;
        max-width: 1240px;
        width: 100%;
    }

    .sitemap-hero img {
        display: block;
        width: 100%;
        height: auto;
        border-radius: 12px;
        box-shadow: 0 8px 20px rgba(0, 0, 0, 0.18);
    }

    header h1 {
        margin: 0 0 0.3rem;
        font-size: clamp(1.5rem, 5vw, 2.2rem);
    }

    header p {
        margin: 0.2rem 0 0;
        opacity: 0.9;
    }

    main {
        max-width: 1000px;
        width: 100%;
        margin: 0 auto;
        padding: 1.2rem;
        box-sizing: border-box;
    }

    .sitemap {
        background: transparent;
        border-radius: 12px;
        padding: 1rem;
    }

    .sitemap + .sitemap {
        margin-top: 1rem;
    }

    .sitemap h2 {
        margin: 0 0 0.8rem;
        font-size: 1.1rem;
    }

    .sitemap-list {
        list-style: none;
        padding: 0;
        margin: 0;
        display: grid;
        grid-template-columns: 1fr;
        gap: 0.5rem;
    }

    @media (min-width: 640px) {
        .sitemap-list {
            grid-template-columns: repeat(2, 1fr);
        }
    }

    @media (min-width: 960px) {
        .sitemap-list {
            grid-template-columns: repeat(3, 1fr);
        }
    }

    .sitemap-list a {
        display: inline-flex;
        align-items: center;
        gap: 0.5rem;
        padding: 0.5rem 0.6rem;
        text-decoration: none;
        color: var(--text-color);
        background: transparent;
        transition: transform 0.15s ease, color 0.2s ease;
    }

    .sitemap-list a:hover {
        transform: translateY(-2px);
        color: #a0a0a0;
    }

    .theme-switch {
        position: fixed;
        bottom: 20px;
        right: 20px;
        z-index: 100;
        background: var(--button-bg);
        border: 1px solid var(--border-color);
        border-radius: 50%;
        width: 50px;
        height: 50px;
        display: flex;
        align-items: center;
        justify-content: center;
        cursor: pointer;
        transition: all 0.3s ease;
        box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
        color: var(--text-color);
        font: inherit;
        padding: 0;
    }

    .theme-switch:hover {
        transform: scale(1.1);
        box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
    }

    .theme-switch:focus-visible {
        outline: 2px solid #9ca3ff;
        outline-offset: 3px;
    }

    .theme-switch svg {
        width: 28px;
        height: 28px;
        fill: var(--text-color);
    }

    html {
        scroll-behavior: smooth;
    }