:root {
    --mobile-header-height: 48px;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    background-color: white;
    margin: 0;
    font-size: 100%;
    font-family: Arial, "MS PGothic", "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Yu Gothic", Meiryo, sans-serif;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

button,
input,
select,
textarea {
    font: inherit;
}

ul {
    list-style: none;
}

.title-logo {
    max-height: 150px;
}
.master {
    display: flex;
    min-width: fit-content;
    min-height: 100vh;
}
.main-pattern {
    position: relative;
    flex: 1;
    min-width: 500px;
    overflow-x: clip;
    padding: 24px;
    background-color: #cccccc;
    background-image: linear-gradient(#ffffff82 1px, transparent 0),
        linear-gradient(90deg, #ffffff82 1px, transparent 0);
    background-size: 40px 40px;
    background-position: top;
}

.works-images {
    position: relative;
    isolation: isolate;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0;

    width: 100%;
    max-width: 500px;
    margin: 20px auto;

    padding: 20px 0 0;
}

.works-images::before {
    content: "";
    position: absolute;
    z-index: -1;
    top: 0;
    right: -100vmax;
    bottom: 0;
    left: -100vmax;
    background: white;
    background-image: linear-gradient(#cbcbcbba 1px, transparent 0),
        linear-gradient(90deg, #cbcbcbba 1px, transparent 0);
    background-size: 40px 40px;
    background-position: top;
}

.works-images a {
    display: block;
    min-width: 0;
}

.works-images img {
    display: block;
    width: 100%;
    height: auto;
    border: 0;
    image-rendering: pixelated;
}

/* 狭い画面では上に2枚、下にOthersを中央配置する */

.works-images .works-others {
    grid-column: 1 / -1;
    justify-self: center;
    width: 75%;
}

.works-images a:hover img {
    opacity: 0.8;
}

/* 広い画面では3枚を一列にする */

@media (min-width: 960px) {
    .works-images {
        grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) minmax(0, 1.5fr);
        max-width: 800px;
    }

    .works-images .works-others {
        grid-column: auto;
        justify-self: stretch;
        width: 100%;
    }
}

.window-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 20px;
    background-color: #31a9ee;
    color: white;
    font-size: 12px;
}
.window_container {
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
}
.window_center {
    text-align: center;
}
.window_box {
    padding: 10px 0px;
    margin-bottom: 10px;
}
.window_box_bg {
    background-color: #d7d7d7;
}
.window_top-news {
    background-image: url(/assets/images/xp_bg.jpeg);
    background-size: cover;
    padding: 20px;
    border-top: 4px solid #858585;
    border-left: 4px solid #858585;
    border-right: 4px solid #fff;
    border-bottom: 4px solid #fff;
}

.window_table_box {
    margin-inline: auto;
}
/* Windows XP風テーブル */

.window_table-wrap {
    width: 100%;
    overflow-x: auto;

    /* 一段奥に凹んだ表示領域 */
    border-top: 2px solid #a8a8a8;
    border-left: 2px solid #a8a8a8;
    border-right: 2px solid #ffffff;
    border-bottom: 2px solid #ffffff;

    background: #ffffff;
    box-sizing: border-box;
}

.window_table {
    width: 100%;
    border-collapse: collapse;

    color: #000000;
    background: #ffffff;
}

/* 列見出し */

.window_table th {
    padding: 5px 8px;
    text-align: left;
    white-space: nowrap;
    font-weight: normal;

    color: #000000;
    background: linear-gradient(to bottom, #ffffff 0%, #f3f3f3 45%, #dcdcdc 100%);
    border-top: 1px solid #ffffff;
    border-left: 1px solid #ffffff;
    border-right: 1px solid #a8a8a8;
    border-bottom: 1px solid #a8a8a8;
}

/* データ部分 */

.window_table td {
    padding: 6px 8px;
    vertical-align: top;

    background: #ffffff;
    border-bottom: 1px solid #e5e5e5;
}

/* XPの選択状態 */

.window_table tbody tr:hover td {
    color: #ffffff;
    background: #316ac5;
}

.window_table tbody tr:hover a {
    color: #ffffff;
}

.window_table a {
    color: #0000ee;
    text-decoration: underline;
}

footer {
    margin-top: 100px;
    margin-bottom: 160px;
}
.heisei-box {
    padding: 20px;
    background-color: #ededed;
    border: double 3px #000000;
}
.footer-box {
    text-align: center;
    max-width: 640px;
    margin: auto;
}

/* サイドバー */

.sidebar {
    position: sticky;
    top: 0;
    width: 300px;
    min-width: 300px;
    overflow-y: auto;
    padding: 16px 12px 12px;
    font-size: 16px;
}
.sidebar-pattern {
    background: url(/assets/images/bg_sky_3.png);
    background-size: 480px 480px;
    background-repeat: repeat;
    image-rendering: pixelated;
}

.sidebar-title {
    color: #333;
    font-size: 18px;
    font-weight: bold;
    line-height: 1.25;
}

.sidebar-subtitle {
    margin-bottom: 12px;
    color: #555;
    font-size: 14px;
}

.sidebar-nav ul {
    display: flex;
    flex-direction: column;
    gap: 10px;
    font-size: 18px;
}

.sidebar-nav span {
    margin-right: 3px;
    color: black;
    font-size: 18px;
}

.sidebar-nav a {
    font-weight: bold;
}

.sidebar-nav small,
.sidebar-nav em {
    font-size: 12px;
}

.sidebar-nav em {
    color: #cc0000;
    font-style: normal;
    font-weight: bold;
}

.link-free {
    margin-top: 20px;
    color: #333;
    font-size: 14px;
    line-height: 1.6;
}

.red {
    color: #cc0000;
    font-weight: bold;
}

#menu-toggle,
.mobile-menu {
    display: none;
}

.character-hikineet {
    position: fixed;
    z-index: 999;
    bottom: 0;
    left: -10px;
    image-rendering: pixelated;
    width: 400px;
}

.xp-window {
    background: #ededed;
    border: 3px solid #5b5b5b;
    border-radius: 7px 7px 3px 3px;
    font-family: Tahoma, "MS UI Gothic", "MS PGothic", sans-serif;
    color: #111;
    overflow: hidden;
    margin: auto;
    max-width: 780px;
}
.xp-window-titlebar {
    font-size: 13px;
    display: flex;
    align-items: center;
    justify-content: space-between;

    padding: 3px 4px 3px 8px;
    color: #ffffff;
    font-weight: bold;
    line-height: 1.4;

    background: linear-gradient(to bottom, #959595 0%, #b8b8b8 8%, #696969 14%, #868686 40%, #595959 100%);

    text-shadow: 1px 1px 0 #003399;
    border-bottom: 1px solid #003c9d;
    height: 32px;
}

.xp-window-title {
    min-width: 0;
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
}

.xp-window-body {
    margin: 6px;
    padding: 12px;
}
.xp-window-image {
    display: block;
    max-width: 100%;
    box-sizing: border-box;
    background: #ffffff;
    border-top: 4px solid #777;
    border-left: 4px solid #777;
    border-right: 4px solid #fff;
    border-bottom: 4px solid #fff;
    box-shadow:
        inset 1px 1px 0 #404040,
        inset -1px -1px 0 #ffffff;
    width: 100%;
    object-fit: cover;
}

.win98-window {
    border-top: 2px solid #ffffff;
    border-left: 2px solid #ffffff;
    border-right: 2px solid #404040;
    border-bottom: 2px solid #404040;
    background: #c0c0c0;
    color: #000;
    margin: auto;
    max-width: 780px;
}
.win98-title {
    margin: 2px;
    padding: 3px 6px;
    color: #ffffff;
    background: #000080;
    font-weight: bold;
    font-size: 12px;
}
.win98-body {
    margin: 2px;
    padding: 12px;
    background: #c0c0c0;
}
.win98-body img {
    width: 100%;
    object-fit: cover;
}

.top-news {
    max-height: 280px;
    overflow-y: scroll;
    overflow-x: hidden;
}

.news-body {
    padding: 10px 0;
}

.split-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}
.split-3 {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 16px;
}

/* ========================================
   MUSIC PLAYER
   ======================================== */

.music-player {
    position: fixed;
    z-index: 1000;
    left: 50%;
    bottom: 10px;

    display: grid;
    grid-template-columns: 74px 180px 1fr 120px;
    gap: 12px;
    align-items: center;

    width: min(1000px, calc(100% - 28px));
    min-height: 92px;
    padding: 8px;
    transform: translateX(-50%);

    color: #000;
    background-color: #ededed;
    border: double 3px #000000;

    font-family: Arial, Tahoma, "MS UI Gothic", "MS PGothic", sans-serif;
    font-size: 12px;
}

/* ジャケット画像 */

.music-player > img {
    display: block;
    width: 74px;
    height: 74px;
    object-fit: cover;

    background: #888888;
    border: 1px solid #000;
}

/* 曲情報 */

.track-info {
    min-width: 0;
    padding: 4px;
}

.track-info span,
.track-info strong,
.track-info small {
    display: block;
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
}

.track-info span {
    margin-bottom: 3px;
    color: #555555;
    font-size: 10px;
}

.track-info strong {
    font-size: 16px;
    font-weight: normal;
}

.track-info small {
    margin-top: 4px;
    font-size: 16px;
}

/* メイン操作部分 */

.player-main {
    min-width: 0;
}

/* ========================================
   TEXT LINK CONTROLS
   ======================================== */

/* SVGアイコンを使った操作部分 */

.player-controls {
    display: flex;
    align-items: center;
    gap: 12px;
    height: 30px;
}

.player-control,
.player-control:link,
.player-control:visited {
    box-sizing: border-box;
    display: inline-flex;
    align-items: center;
    justify-content: center;

    width: 30px;
    height: 30px;
    margin: 0;
    padding: 0;

    background: transparent;
    border: 1px solid transparent;
    text-decoration: none;

    cursor: pointer;
}

.player-control img {
    display: block;
    width: 24px;
    height: 24px;
    object-fit: contain;

    /* 画像をドラッグできないようにする */
    user-select: none;
    -webkit-user-drag: none;
}

/* マウスを乗せたとき */

.player-control:hover img {
    opacity: 0.7;
}

/* クリックしている瞬間 */

.player-control:active img {
    transform: translate(1px, 1px);
}

/* キーボード操作 */

.player-control:focus-visible {
    outline: 1px dotted #000000;
    outline-offset: 1px;
}

/* ========================================
   SEEK ROW
   ======================================== */

.seek-row {
    display: grid;
    grid-template-columns: 40px 1fr 40px;
    gap: 8px;
    align-items: center;
    margin-top: 8px;

    color: #000;
    font-family: Arial, sans-serif;
    font-size: 12px;
}

.seek-row span {
    text-align: center;
}

/* ========================================
   SEEK BAR
   ======================================== */

.seekbar {
    width: 100%;
    height: 18px;
    margin: 0;

    appearance: none;
    -webkit-appearance: none;

    background: transparent;
    cursor: pointer;
}

/* Chrome・Edge・Safari */

.seekbar::-webkit-slider-runnable-track {
    height: 8px;

    background: #c8c8c8;

    border-top: 1px solid #ffffff;
    border-left: 1px solid #ffffff;
    border-right: 1px solid #888888;
    border-bottom: 1px solid #888888;
}

.seekbar::-webkit-slider-thumb {
    width: 15px;
    height: 20px;
    margin-top: -7px;

    appearance: none;
    -webkit-appearance: none;

    background: #d5d5d5;

    border-top: 2px solid #ffffff;
    border-left: 2px solid #ffffff;
    border-right: 2px solid #666666;
    border-bottom: 2px solid #666666;
    border-radius: 0;
}

/* Firefox */

.seekbar::-moz-range-track {
    height: 6px;

    background: #c8c8c8;
    border: 1px solid #ffffff;
    border-radius: 0;
}

.seekbar::-moz-range-thumb {
    width: 13px;
    height: 18px;

    background: #d5d5d5;

    border-top: 2px solid #ffffff;
    border-left: 2px solid #ffffff;
    border-right: 2px solid #666666;
    border-bottom: 2px solid #666666;
    border-radius: 0;
}

/* ========================================
   VOLUME CONTROL
   ======================================== */

.volume-control {
    position: relative;
    box-sizing: border-box;

    display: flex;
    align-items: center;

    width: 100%;
    height: 34px;
    padding: 0 4px 0 30px;

    background: transparent;
    border: 0;
}

/* ミュートボタン */

.volume-button,
.volume-button:link,
.volume-button:visited {
    position: absolute;
    z-index: 2;
    top: 5px;
    left: 2px;

    width: 23px;
    height: 24px;

    display: inline-flex;
    align-items: center;
    justify-content: center;

    background: transparent;
    border: 1px solid transparent;
    text-decoration: none;
    cursor: pointer;
}

.volume-button img {
    display: block;
    width: 24px;
    height: 24px;
    object-fit: contain;

    user-select: none;
    -webkit-user-drag: none;
}

.volume-button:hover img {
    opacity: 0.7;
}

.volume-button:active img {
    transform: translate(1px, 1px);
}

/* 三角形メーター */

.volume-control::after {
    content: "";

    position: absolute;
    z-index: 0;
    top: 5px;
    left: 30px;
    right: 4px;

    height: 24px;

    background-repeat: no-repeat;
    background-position: center;
    background-size: 100% 100%;

    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='90' height='24' viewBox='0 0 90 24' preserveAspectRatio='none'%3E%3Cpath d='M2 20 L87 3 L87 20 Z' fill='%23c7c7c7' stroke='%23888888' stroke-width='1'/%3E%3Cpath d='M3 19 L86 4' fill='none' stroke='%23eeeeee' stroke-width='1'/%3E%3C/svg%3E");
}

.volumebar {
    position: relative;
    z-index: 1;

    width: 100%;
    height: 28px;
    margin: 0;

    appearance: none;
    -webkit-appearance: none;

    background: transparent;
    cursor: pointer;
}

/* Chrome・Edge・Safari */

.volumebar::-webkit-slider-runnable-track {
    height: 24px;
    background: transparent;
    border: 0;
}

.volumebar::-webkit-slider-thumb {
    width: 13px;
    height: 28px;
    margin-top: -2px;

    appearance: none;
    -webkit-appearance: none;

    background: #d4d4d4;

    border-top: 2px solid #ffffff;
    border-left: 2px solid #ffffff;
    border-right: 2px solid #666666;
    border-bottom: 2px solid #666666;
    border-radius: 0;
}

/* Firefox */

.volumebar::-moz-range-track {
    height: 24px;
    background: transparent;
    border: 0;
}

.volumebar::-moz-range-progress {
    background: transparent;
}

.volumebar::-moz-range-thumb {
    width: 11px;
    height: 26px;

    background: #d4d4d4;

    border-top: 2px solid #ffffff;
    border-left: 2px solid #ffffff;
    border-right: 2px solid #666666;
    border-bottom: 2px solid #666666;
    border-radius: 0;
}

/* キーボード操作 */

.player-control:focus-visible,
.volume-button:focus-visible,
.seekbar:focus-visible,
.volumebar:focus-visible {
    outline: 1px dotted #000000;
    outline-offset: 2px;
}

/* =========================
   News List
========================= */

.news-page {
    width: calc(100% - 24px);
    max-width: 760px;
    margin: 14px auto 0;
    font-family: Arial, "MS PGothic", sans-serif;
}

.news-list-table {
    width: 100%;
    border: 1px solid #000000;
    border-spacing: 2px;
    background: #c0c0c0;
}

.news-list-table th,
.news-list-table td {
    padding: 5px 7px;
    border: 1px solid #808080;
    background: #f5f5f5;
    font-size: 14px;
    line-height: 1.4;
    text-align: left;
    vertical-align: top;
}

.news-list-table .news-list-title {
    padding: 7px;
    background: #000;
    color: #fff;
    font-size: 22px;
    font-weight: normal;
    text-align: center;
}

.news-list-table thead tr:nth-child(2) th {
    background: #e5e5e5;
}

.news-list-date-heading,
.news-list-date {
    width: 150px;
    white-space: nowrap;
}

.news-list-link {
    overflow-wrap: anywhere;
}

.news-list-empty {
    padding: 18px;
    text-align: center;
}

.news-top-link {
    margin: 28px 0 20px;
    text-align: center;
}

@media (max-width: 540px) {
    .news-page {
        width: calc(100% - 8px);
    }

    .news-list-table th,
    .news-list-table td {
        padding: 4px;
        font-size: 12px;
    }

    .news-list-table .news-list-title {
        font-size: 18px;
    }

    .news-list-date-heading,
    .news-list-date {
        width: 100px;
    }
}

/* =========================
   Shared Retro Lists
========================= */

.retro-list-table {
    width: 100%;
    border: 1px solid #000000;
    border-spacing: 2px;
    background: #c0c0c0;
}

.retro-list-table td {
    padding: var(--retro-list-cell-padding, 4px 5px);
    border: 1px solid #808080;
    background: #f5f5f5;
    font-size: 14px;
    line-height: 1.4;
    text-align: left;
    vertical-align: top;
}

.retro-list-info {
    overflow-wrap: anywhere;
}

.retro-list-title {
    margin: 0 0 5px;
    font-size: 19px;
    font-weight: normal;
}

.retro-list-empty {
    padding: 18px;
    border: 1px solid #808080;
    background: #f5f5f5;
    text-align: center;
}

@media (max-width: 540px) {
    .retro-list-table td {
        padding: 4px;
        font-size: 12px;
    }

    .retro-list-title {
        font-size: 15px;
    }
}

/* =========================
   Secret Music and Games
========================= */

.secret-page {
    width: calc(100% - 24px);
    max-width: 620px;
    margin: 14px auto 0;
    font-family: Arial, "MS PGothic", sans-serif;
}

.secret-title-table {
    width: 100%;
    border: 1px solid #000000;
    border-spacing: 2px;
    background: #c0c0c0;
}

.secret-title-table th,
.secret-title-table td {
    padding: 4px 5px;
    border: 1px solid #808080;
    background: #f5f5f5;
    font-size: 14px;
    line-height: 1.4;
    text-align: left;
    vertical-align: top;
}

.secret-title-table th {
    background: linear-gradient(to bottom, #bababa 0%, #a1a1a1 10%, #7f7f7f 45%, #5f5f5f 55%, #9e9e9e 100%);
    color: #fff;
    font-size: 22px;
    font-weight: normal;
    text-align: center;
}

.secret-track-list {
    display: grid;
    gap: 8px;
    margin-top: 10px;
}

.secret-section-title {
    margin: 14px 0 6px;
    padding: 4px 5px;
    border: 1px solid #000000;
    background: linear-gradient(to bottom, #bababa 0%, #a1a1a1 10%, #7f7f7f 45%, #5f5f5f 55%, #9e9e9e 100%);
    color: #ffffff;
    font-size: 18px;
    font-weight: normal;
    text-align: center;
}

.secret-game-list {
    display: grid;
    gap: 8px;
}

.secret-game-info p {
    margin: 5px 0;
}

.secret-game-images {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 5px;
    margin: 8px 0;
}

.secret-game-images img,
.secret-game-image-empty {
    display: block;
    box-sizing: border-box;
    width: 100%;
    aspect-ratio: 16 / 9;
    border: 1px solid #808080;
    background: #ffffff;
}

.secret-game-images img {
    height: auto;
    object-fit: cover;
}

.secret-game-image-empty {
    display: grid;
    place-items: center;
    color: #666666;
    font-size: 12px;
}

.secret-game-link {
    text-align: right;
}

.secret-music-note {
    margin: 0 0 8px;
    font-size: 13px;
}

.secret-track-table {
    table-layout: fixed;
}

.secret-track-table .secret-cover-cell {
    width: 116px;
    padding: 5px;
    text-align: center;
    vertical-align: middle;
}

.secret-cover {
    display: block;
    width: 100px;
    height: 100px;
    margin: auto;
    object-fit: cover;
    border: 1px solid #000000;
    background: #ffffff;
}

.secret-track-info p {
    margin: 3px 0;
}

.secret-description {
    padding: 7px 0;
}

.secret-top-link {
    margin: 28px 0 20px;
    text-align: center;
}

@media (max-width: 540px) {
    .secret-page {
        width: calc(100% - 8px);
    }

    .secret-title-table th,
    .secret-title-table td {
        padding: 4px;
        font-size: 12px;
    }

    .secret-title-table th {
        font-size: 18px;
    }

    .secret-track-table .secret-cover-cell {
        width: 82px;
        padding: 3px;
    }

    .secret-cover {
        width: 72px;
        height: 72px;
    }

    .secret-section-title {
        font-size: 15px;
    }

    .secret-game-images {
        gap: 3px;
    }

    .secret-game-image-empty {
        font-size: 10px;
    }
}

/* =========================
   Webstar Game
========================= */

.webstar-game-page {
    box-sizing: border-box;
    width: 100%;
}

.webstar-game-frame {
    position: relative;
    box-sizing: border-box;
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    border: 2px solid #000000;
    background: #000000;
}

.webstar-game-frame iframe {
    display: block;
    width: 100%;
    height: 100%;
    border: 0;
    background: #000000;
}

.webstar-game-links {
    margin: 0.75rem 0 0;
    text-align: center;
}

@media (max-width: 767px) {
    .webstar-game-page {
        padding-right: 0;
        padding-left: 0;
    }

    .webstar-game-page h1,
    .webstar-game-links {
        padding-right: 0.75rem;
        padding-left: 0.75rem;
    }
}

/* =========================
   Works List
========================= */

.works-page {
    width: calc(100% - 24px);
    max-width: 720px;
    margin: 14px auto 0;
    font-family: Arial, "MS PGothic", sans-serif;
}

.works-control-table {
    width: 100%;
    border: 1px solid #000000;
    border-spacing: 2px;
    background: #c0c0c0;
}

.works-control-table th,
.works-control-table td {
    padding: 5px 7px;
    border: 1px solid #808080;
    background: #f5f5f5;
    font-size: 14px;
    line-height: 1.4;
    text-align: left;
    vertical-align: top;
}

.works-control-table th[scope="row"] {
    width: 90px;
    background: #e5e5e5;
    white-space: nowrap;
}

.works-control-table .works-page-title {
    padding: 7px;
    background: linear-gradient(to bottom, #bababa 0%, #a1a1a1 10%, #7f7f7f 45%, #5f5f5f 55%, #9e9e9e 100%);
    color: #fff;
    font-size: 22px;
    font-weight: normal;
    text-align: center;
}

.works-control-table strong {
    color: #000000;
}

.works-result-count {
    margin: 12px 2px 6px;
    font-size: 13px;
}

.works-list {
    display: grid;
    gap: 10px;
}

.works-entry-table {
    --retro-list-cell-padding: 5px 7px;

    table-layout: fixed;
}

.works-entry-table .works-thumbnail-cell {
    width: 198px;
    padding: 7px;
    text-align: center;
    vertical-align: middle;
}

.works-thumbnail {
    display: block;
    width: 180px;
    aspect-ratio: 16 / 9;
    margin: auto;
    object-fit: cover;
    border: 1px solid #000000;
    background: #ffffff;
}

.works-entry-info .retro-list-title {
    line-height: 1.3;
}

.works-entry-info p {
    margin: 2px 0;
}

.works-entry-info .works-description {
    margin: 8px 0;
}

.works-top-link {
    margin: 28px 0 20px;
    text-align: center;
}

@media (max-width: 540px) {
    .works-page {
        width: calc(100% - 8px);
    }

    .works-control-table th,
    .works-control-table td {
        padding: 4px;
        font-size: 12px;
    }

    .works-control-table th[scope="row"] {
        width: 68px;
    }

    .works-control-table .works-page-title {
        font-size: 18px;
    }

    .works-entry-table .works-thumbnail-cell {
        width: 128px;
        padding: 4px;
    }

    .works-thumbnail {
        width: 118px;
    }

    .works-entry-info .works-description {
        margin: 5px 0;
    }
}

/* =========================
   Contact Links
========================= */

.contact-table-wrap {
    width: calc(100% - 24px);
    max-width: 600px;
    margin: 14px auto 0;
    padding: 2px;
    background: #c4c4c4;
    border: 1px solid #888888;
}

.contact-link-table {
    width: 100%;
    table-layout: fixed;
    border-collapse: separate;
    border-spacing: 2px;
    background: #c4c4c4;
    border: 1px solid #000000;
}

.contact-link-table td,
.contact-link-table th {
    padding: 3px 4px;
    color: #000000;
    background: #ededed;
    border: 1px solid #000000;
    font-family: Arial, "MS PGothic", sans-serif;
    font-size: 16px;
    font-weight: normal;
    line-height: 1.25;
    vertical-align: middle;
    overflow-wrap: anywhere;
}

.contact-link-table .contact-table-title {
    padding: 5px;
    background: #ededed;
    text-align: center;
}

.contact-top-link {
    margin: 32px 0 20px;
    font-size: 16px;
    text-align: center;
}

@media (max-width: 540px) {
    .contact-table-wrap {
        width: calc(100% - 8px);
        padding: 1px;
    }

    .contact-link-table {
        border-spacing: 1px;
    }

    .contact-link-table td,
    .contact-link-table th {
        padding: 3px;
    }

    .contact-top-link {
        margin-top: 28px;
    }
}

/* 下部ステータスバー */

.xp-statusbar {
    margin: 0 3px 3px;
    padding: 3px 6px;

    border-top: 1px solid #a9a9a9;
    box-shadow: inset 1px 1px 0 #fff;

    color: #444;
    font-size: 11px;
}

/* 常に画面右側の領域を確保 */
html {
    overflow-y: scroll;
    scrollbar-gutter: stable;
}

/* Chrome・Edge・Safari用 */
::-webkit-scrollbar {
    width: 18px;
    height: 18px;
    background: #f4f4f4;
}

::-webkit-scrollbar-track {
    background: #f3f3eb;
    border-left: 2px solid #a8a8a8;
    border-right: 2px solid #ffffff;
}

::-webkit-scrollbar-thumb {
    min-height: 50px;
    background: linear-gradient(to right, #eeeeee 0%, #dddddd 55%, #c8c8c8 100%);
    border-top: 2px solid #ffffff;
    border-left: 2px solid #ffffff;
    border-right: 2px solid #595959;
    border-bottom: 2px solid #595959;
    border-radius: 0;
}

::-webkit-scrollbar-button:single-button {
    display: block;
    width: 18px;
    height: 18px;
    background-color: #dddddd;
    background-repeat: no-repeat;
    background-position: center;
    border-top: 2px solid #ffffff;
    border-left: 2px solid #ffffff;
    border-right: 2px solid #595959;
    border-bottom: 2px solid #595959;
}

/* 上端の上向き矢印 */
::-webkit-scrollbar-button:single-button:vertical:decrement {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='9' height='9' viewBox='0 0 9 9'%3E%3Cpath d='M1 6.5 L4.5 2.5 L8 6.5 Z' fill='%23333333'/%3E%3C/svg%3E");
}

/* 下端の下向き矢印 */
::-webkit-scrollbar-button:single-button:vertical:increment {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='9' height='9' viewBox='0 0 9 9'%3E%3Cpath d='M1 2.5 L4.5 6.5 L8 2.5 Z' fill='%23333333'/%3E%3C/svg%3E");
}

/* ボタンを押したとき */
::-webkit-scrollbar-button:single-button:active {
    background-color: #cacaca;
    border-top-color: #595959;
    border-left-color: #595959;
    border-right-color: #ffffff;
    border-bottom-color: #ffffff;
}

/* 横スクロールバーと交わる右下部分 */
::-webkit-scrollbar-corner {
    background: #dddddd;
}

/* スマホ */

@media (max-width: 1500px) {
    .sidebar-right {
        display: none;

        border: none;

        position: fixed;
        top: 40px;
        right: 10px;
        z-index: 9999;

        width: 260px;
        max-height: calc(100vh - 70px);
        overflow-y: auto;
    }
}

@media (max-width: 960px) {
    .master {
        display: block;
        min-width: 0;
        min-height: calc(100vh - var(--mobile-header-height));
    }

    .main-pattern {
        min-width: 0;
        padding: 28px 16px;
        min-height: calc(100vh - var(--mobile-header-height));
    }

    .window-header {
        display: none;
    }

    .window_top-news {
        margin-inline: -20px;
    }

    .window_table_box {
        max-width: 780px;
    }

    .xp-window-title-top {
        display: none;
    }

    .mobile-menu {
        position: sticky;
        top: 0;
        z-index: 10;
        display: block;
        padding: 0 12px;
        color: white;
        background: linear-gradient(to bottom, #bababa 0%, #a1a1a1 10%, #7f7f7f 45%, #5f5f5f 55%, #9e9e9e 100%);
        border-bottom: 2px solid #000000;
        font-weight: bold;
        text-align: right;
        height: var(--mobile-header-height);
        font-size: 28px;
    }

    .sidebar {
        display: none;

        border: none;

        position: fixed;
        top: 40px;
        right: 10px;
        z-index: 9999;

        width: 260px;
        max-height: calc(100vh - 70px);
        overflow-y: auto;
    }
    #menu-toggle:checked ~ .master .sidebar {
        display: block;
    }

    .sidebar-pattern {
        background: none;
    }

    .character-hikineet {
        display: none;
    }

    .split-2,
    .split-3 {
        grid-template-columns: 1fr;
    }

    .music-player {
        width: 100%;
        min-height: 106px;
        grid-template-columns: 56px minmax(100px, 1fr) 2fr;
        gap: 8px;
        padding: 7px;
        bottom: -2px;
    }

    .music-player > img {
        width: 56px;
        height: 56px;
    }

    .volume-control {
        display: none;
    }

    .player-buttons button {
        min-width: 36px;
        padding: 3px 5px;
    }

    .player-main,
    .player-buttons,
    .seek-row,
    #seek-bar {
        min-width: 0;
        max-width: 100%;
    }
}

@media (max-width: 540px) {
    .title-logo {
        width: 100%;
    }

    .window_table td:first-child {
        width: 100px;
    }

    .music-entry {
        align-items: flex-start;
    }

    .music-entry img {
        width: 100px;
    }

    .music-player {
        min-height: 0;
        grid-template-columns: 46px minmax(0, 1fr);
        gap: 6px 8px;
        padding: 6px;
    }

    .music-player > img {
        width: 46px;
        height: 46px;
    }

    .player-main {
        grid-column: 1 / -1;
        width: 100%;
    }

    .player-buttons {
        display: grid;
        grid-template-columns: repeat(4, minmax(0, 1fr));
        gap: 4px;
        width: 100%;
    }

    .player-buttons button {
        width: 100%;
        min-width: 0;
        height: 30px;
        padding: 2px 3px;
        overflow: hidden;
        font-size: 9px;
        text-overflow: clip;
        white-space: nowrap;
    }

    .seek-row {
        width: 100%;
        grid-template-columns: 34px minmax(0, 1fr) 34px;
        gap: 4px;
        margin-top: 4px;
        font-size: 10px;
    }

    .seek-row > span:last-child {
        text-align: right;
    }

    #seek-bar {
        width: 100%;
        margin: 0;
    }

    .track-info strong {
        font-size: 13px;
    }

    .track-info small {
        font-size: 10px;
    }

    .page-shell {
        margin-bottom: 150px;
    }
}

@media (max-width: 340px) {
    .player-buttons {
        gap: 3px;
    }

    .player-buttons button {
        padding-inline: 1px;
        font-size: 8px;
    }

    .seek-row {
        grid-template-columns: 31px minmax(0, 1fr) 31px;
        gap: 3px;
    }
}

/* =========================
   Odochina Work Page
========================= */

.odochina-page {
    box-sizing: border-box;
    width: calc(100% - 24px);
    max-width: 760px;
    margin: 14px auto 0;
    padding: 10px;
    background: transparent;
    font-family: Arial, "MS PGothic", sans-serif;
}

.odochina-title-table,
.odochina-info-table,
.odochina-lyrics-table {
    width: 100%;
    border-collapse: collapse;
}

.odochina-title-table {
    border: 1px solid #000000;
    background: #c0c0c0;
    text-align: center;
}

.odochina-title-table th {
    padding: 7px;
    background: linear-gradient(to bottom, #bababa 0%, #a1a1a1 10%, #7f7f7f 45%, #5f5f5f 55%, #9e9e9e 100%);
    color: #ffffff;
    font-size: 22px;
    font-weight: normal;
}

.odochina-title-table td {
    padding: 5px;
    border-top: 1px solid #808080;
    background: #f5f5f5;
    font-size: 14px;
}

.odochina-content {
    margin-top: 8px;
    padding: 10px;
    border: 1px solid #000000;
    background-color: #dedede;
    background-image:
        linear-gradient(45deg, #d2d2d2 25%, transparent 25%, transparent 75%, #d2d2d2 75%),
        linear-gradient(45deg, #d2d2d2 25%, transparent 25%, transparent 75%, #d2d2d2 75%);
    background-position:
        0 0,
        8px 8px;
    background-size: 16px 16px;
}

.odochina-welcome {
    margin: 0 0 8px;
    color: #000000;
    font-size: 13px;
    text-align: center;
}

.odochina-main-image {
    display: block;
    box-sizing: border-box;
    width: 100%;
    max-width: 640px;
    height: auto;
    margin: 0 auto 10px;
    border: 1px solid #000000;
}

.odochina-info-table th,
.odochina-info-table td {
    padding: 5px 7px;
    border: 1px solid #808080;
    background: #f5f5f5;
    font-size: 14px;
    line-height: 1.4;
    text-align: left;
}

.odochina-info-table th {
    width: 90px;
    background: #e5e5e5;
    white-space: nowrap;
}

.odochina-links {
    margin: 10px 0;
    text-align: center;
}

.odochina-lyrics-table th {
    padding: 5px;
    border: 1px solid #000000;
    background: linear-gradient(to bottom, #bababa 0%, #a1a1a1 10%, #7f7f7f 45%, #5f5f5f 55%, #9e9e9e 100%);
    color: #ffffff;
    font-size: 18px;
    font-weight: normal;
    text-align: center;
}

.odochina-lyrics-table td {
    padding: 12px 20px;
    border: 1px solid #808080;
    background: #f5f5f5;
    font-size: 14px;
    line-height: 1.75;
    text-align: left;
}

.odochina-bottom-link {
    margin: 16px 0 4px;
    text-align: center;
}

@media (max-width: 540px) {
    .odochina-page {
        width: calc(100% + 32px);
        max-width: none;
        margin-right: -16px;
        margin-left: -16px;
        padding: 6px;
    }

    .odochina-content {
        padding: 5px;
    }

    .odochina-title-table th {
        font-size: 20px;
    }

    .odochina-info-table th,
    .odochina-info-table td,
    .odochina-lyrics-table td {
        padding: 5px;
        font-size: 12px;
    }

    .odochina-info-table th {
        width: 68px;
    }
}

/* 88x31 banner display size */
.site-banners {
    display: grid;
    box-sizing: border-box;
    width: 100%;
    grid-template-columns: repeat(auto-fit, 176px);
    justify-content: center;
    gap: 6px;
}

.site-banners a {
    display: block;
}

.site-banner {
    display: block;
    width: 176px;
    max-width: 100%;
    height: auto;
    image-rendering: pixelated;
}

@media (max-width: 540px) {
    .site-banners {
        grid-template-columns: repeat(2, minmax(0, 176px));
        padding: 0 4px;
    }

    .site-banners a,
    .site-banner {
        width: 100%;
    }
}