/* ===================================
   インラインSVG背景の追加バリエーション
   =================================== */

/* 別のカラフルなSVGパターン（代替案） */
body.alt-svg::after {
    background-image: url('data:image/svg+xml;base64,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');
}

/* グラデーションメッシュSVGパターン */
body.mesh-svg::after {
    background-image: url('data:image/svg+xml;base64,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');
}