body {
    margin: 0;
    font-family: "M PLUS 1", sans-serif;
    background-color: #f9f9f9;
}
.stations-wrapper {
    width: 100%;
    padding: 60px 0;
    position: relative;
}

.station-group {
    position: relative;
    height: 80px;
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 0 20px;
}

.station-row {
    position: absolute;
    left: 0;
    width: 100%;
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 0 20px;
    height: 80px;
}


.station-node {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 20px;
    background-color: white;
    border: 4px solid #3a86ff;
    border-radius: 50%;
    z-index: 2;
    pointer-events: none;
}


/* 背景専用レイヤー */
.station-background {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.station-group:nth-of-type(even) .station-background {
    background-color: #fff;
}

.station-group:nth-of-type(odd) .station-background {
    background-color: #eee;
}

/* 中央線を最前面に */
.central-line {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 8px;
    background-color: #3a86ff;
    z-index: 1;
    pointer-events: none;
}
.central-line-end {
    position: absolute;
    top: 0;
    bottom: 50%;
    left: 50%;
    transform: translateX(-50%);
    width: 8px;
    background-color: #3a86ff;
    z-index: 1;
    pointer-events: none;
}


.station-data {
    position: absolute;
    align-items: center;
    margin-top: auto;
    margin-bottom: auto;
    justify-content: left;
    width: 30%;
    z-index: 2;
    pointer-events: none;
}

.station-name {
    top: 50%;
    display: flex;
    align-items: center;
    gap: 8px;
    z-index: 2;
    pointer-events: none;
}

.kanji {
    font-family: "M PLUS 1", sans-serif;
    font-size: 34px;
    font-weight: 300;
    line-height: 1.2;
    pointer-events: none;
}

.kana-romaji {
    display: flex;
    flex-direction: column;
    font-family: "M PLUS 1", sans-serif;
    margin: 0;
    padding: 0;
    line-height: 1;
    pointer-events: none;
}

.kana {
    font-size: 17px;
    margin: 0;
    padding: 0;
    line-height: 1;
    pointer-events: none;
}

.romaji {
    font-size: 17px;
    margin: 0;
    padding: 0;
    line-height: 1;
    pointer-events: none;
}


/* アイコン画像パス */
/* 上り臨時 */
.u_ex_exp {
    background-image: url("icons/d_ex_exp.png");
}

.u_ex_local {
    background-image: url("icons/d_ex_local.png");
}

.u_ex_ltd {
    background-image: url("icons/d_ex_ltd.png");
}

.u_ex_rpd {
    background-image: url("icons/d_ex_rap.png");
}

.u_ex_sexp {
    background-image: url("icons/d_ex_sexp.png");
}

/* 上り定期 */
.u_exp {
    background-image: url("icons/d_exp.png");
}

.u_local {
    background-image: url("icons/d_local.png");
}

.u_ltd {
    background-image: url("icons/d_ltd.png");
}

.u_rpd {
    background-image: url("icons/d_rap.png");
}

.u_sexp {
    background-image: url("icons/d_sexp.png");
}

.u_outserv {
    background-image: url("icons/d_outserv.png");
}

/* 下り臨時 */

.d_ex_exp {
    background-image: url("icons/d_ex_exp.png");
}
.d_ex_local {
    background-image: url("icons/d_ex_local.png");
}
.d_ex_ltd {
background-image: url("icons/d_ex_ltd.png");
}
.d_ex_rpd {
    background-image: url("icons/d_ex_rap.png");
}
.d_ex_sexp {
    background-image: url("icons/d_ex_sexp.png");
}

/* 下り定期 */

.d_exp {
    background-image: url("icons/d_exp.png");
}
.d_local {
    background-image: url("icons/d_local.png");
}
.d_ltd {
    background-image: url("icons/d_ltd.png");
}
.d_rpd {
    background-image: url("icons/d_rap.png");
}
.d_sexp {
    background-image: url("icons/d_sexp.png");
}
.d_outserv {
    background-image: url("icons/d_outserv.png");
}


/* Google Fonts */
.wf-mplus1 {
    font-family: "M PLUS 1", sans-serif;
}

.thin {
    font-weight: 100;
}

.light {
    font-weight: 300;
}

.regular {
    font-weight: 400;
}

.medium {
    font-weight: 500;
}

.bold {
    font-weight: 700;
}

.extrabold {
    font-weight: 800;
}

.black {
    font-weight: 900;
}

/* ボタン配置用 */
.station-link-btn-wrapper {
    margin: 16px 0;
    text-align: center;
    display: flex;
    justify-content: center;
    align-items: center;
}

    .station-link-btn-wrapper.left {
        justify-content: flex-start;
        text-align: left;
    }

    .station-link-btn-wrapper.right {
        justify-content: flex-end;
        text-align: right;
    }

.station-link-btn {
    display: inline-block;
    background: #1976d2;
    color: #fff;
    font-weight: bold;
    padding: 8px 20px;
    border-radius: 6px;
    text-decoration: none;
    box-shadow: 0 2px 6px rgba(0,0,0,0.08);
    transition: background 0.2s, color 0.2s, box-shadow 0.2s;
    border: none;
    font-size: 1em;
}

.station-link-btn-oji {
    display: inline-block;
    background: #1976d2;
    color: #fff;
    font-weight: bold;
    padding: 8px 20px;
    border-radius: 6px;
    text-decoration: none;
    box-shadow: 0 2px 6px rgba(0,0,0,0.08);
    transition: background 0.2s, color 0.2s, box-shadow 0.2s;
    border: none;
    font-size: 1em;
    pointer-events: none;
}


    .station-link-btn:hover,
    .station-link-btn:focus {
        background: #1565c0;
        color: #fff;
        text-decoration: none;
        box-shadow: 0 4px 12px rgba(25, 118, 210, 0.15);
    }

/* 駅ノード上に絶対配置するボタン */
.station-link-btn-absolute {
    position: absolute;
    left: 50%;
    top: 25%; /* 必要に応じて調整 */
    transform: translateX(-50%);
    z-index: 10;
    display: inline-block;
    background: #1976d2;
    color: #fff;
    font-weight: bold;
    padding: 8px 20px;
    border-radius: 6px;
    text-decoration: none;
    box-shadow: 0 2px 6px rgba(0,0,0,0.08);
    transition: background 0.2s, color 0.2s, box-shadow 0.2s;
    border: none;
    font-size: 1em;
}

    .station-link-btn-absolute:hover,
    .station-link-btn-absolute:focus {
        background: #1565c0;
        color: #fff;
        text-decoration: none;
        box-shadow: 0 4px 12px rgba(25, 118, 210, 0.15);
    }