/* ===========================
   全体（黒×ピンク）
=========================== */
body {
    margin: 0;
    background: radial-gradient(circle at top, #2b0f19 0%, #0a080a 50%, #000000 100%);
    font-family: "M PLUS Rounded 1c", "Noto Sans JP", sans-serif;
    color: #f8e6ee;
}

.global-nav {
    background: rgba(70, 0, 50, 0.9);
    border-bottom: 2px solid #ff6ecf;
    box-shadow: 0 0 12px rgba(255, 140, 200, 0.4);

    display: flex;
    justify-content: center;
    gap: 20px;
    padding: 12px 0;
    position: sticky;
    top: 0;
    z-index: 9999;
}

.global-nav a {
    color: #ffd6f0;
    text-decoration: none;
    font-weight: bold;
    font-size: 0.95rem;
    padding: 6px 14px;
    border-radius: 999px;
    transition: 0.25s;
}

.global-nav a:hover {
    background: rgba(255, 120, 200, 0.4);
    color: #fff;
    box-shadow: 0 0 10px rgba(255, 120, 200, 0.7);
}


/* ===========================
   ヘッダー
=========================== */
.os-header {
    text-align: center;
    padding: 30px 12px;

    background: rgba(20, 5, 10, 0.95);
    border-bottom: 2px solid #ff8fb8;
    box-shadow: 0 4px 18px rgba(255, 150, 200, 0.3);
}

.os-header h1 {
    margin: 0;
    font-size: 2rem;
    color: #ff9fcf;
    text-shadow: 0 0 8px rgba(255, 120, 180, 0.5);
}

.os-header p {
    margin-top: 6px;
    color: #ffb6d9;
}

/* ===========================
   メイン
=========================== */
.os-wrapper {
    max-width: 900px;
    margin: 0 auto;
    padding: 22px;
}

/* ===========================
   スライダー
=========================== */
.slider {
    width: 100%;
    height: 380px;
    border-radius: 18px;
    overflow: hidden;
    position: relative;
}

.slider img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    position: absolute;
    top: 0;
    left: 0;
    display: none;
}

.slider img:first-child {
    display: block;
}

/* ===========================
   ヒーローテキスト
=========================== */
.hero-text {
    margin-top: 16px;
    background: rgba(20, 10, 18, 0.85);
    border-radius: 16px;
    padding: 18px;

    border: 1px solid rgba(255, 130, 170, 0.35);
    box-shadow: 0 4px 16px rgba(255, 130, 170, 0.25);
}

.catch-copy {
    margin: 0 0 6px;
    color: #ff99c8;
}

.hero-text h2 {
    margin: 0 0 8px;
    color: #ff78b3;
}

.hero-text p {
    margin: 0;
    line-height: 1.7;
    color: #f4d9e5;
}

/* ===========================
   セクション
=========================== */
.os-section {
    margin-top: 26px;
    padding: 20px;
    background: rgba(10, 7, 11, 0.9);
    border-radius: 20px;

    border: 1px solid rgba(255, 130, 170, 0.3);
    box-shadow: 0 6px 22px rgba(255, 100, 160, 0.18);
}

.os-title {
    margin: 0 0 14px;
    font-size: 1.4rem;
    font-weight: bold;
    color: #ff99c8;
}

/* 種目カラー（黒背景用に彩度UP） */
.golf-color {
    color: #4fd38b;
    border-left: 6px solid #4fd38b;
    padding-left: 10px;
}

.soccer-color {
    color: #4da8ff;
    border-left: 6px solid #4da8ff;
    padding-left: 10px;
}

.basket-color {
    color: #ffa64d;
    border-left: 6px solid #ffa64d;
    padding-left: 10px;
}

/* ===========================
   スポーツ紹介ボックス
=========================== */
.os-sport-box {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

@media (min-width: 700px) {
    .os-sport-box {
        flex-direction: row;
        align-items: center;
    }
}

.os-photo {
    width: 100%;
    max-width: 320px;
    border-radius: 14px;

    box-shadow: 0 6px 20px rgba(255, 130, 170, 0.35);
    border: 1px solid rgba(255, 150, 180, 0.3);
}

.os-text p {
    margin: 0 0 10px;
    line-height: 1.8;
    color: #f1d4e4;
}

/* ===========================
   フッター
=========================== */
.os-footer {
    text-align: center;
    padding: 28px 0 22px;

    background: rgba(15, 5, 12, 0.95);
    border-top: 2px solid #ff8fb8;

    color: #f4d9e5;
    font-size: 0.9rem;

    box-shadow: 0 -4px 16px rgba(255, 120, 180, 0.3);
}

.back-home {
    color: #ff9fcf;
    text-decoration: none;
    font-weight: bold;
}

.back-home:hover {
    text-shadow: 0 0 8px rgba(255, 150, 200, 0.6);
}

/* ===========================
   アニメーション
=========================== */
.fade-in {
    opacity: 0;
    transform: translateY(12px);
    transition: 0.55s ease;
}

.fade-in.show {
    opacity: 1;
    transform: translateY(0);
}