/* =========================
   Wave separator (共通)
========================= */
.wave-sep {
    position: relative;
    line-height: 0;
    height: 120px;
    overflow: hidden;
}

.wave-sep-reverse {
    height: 450px;
}
.wave-sep svg {
    display: block;
    width: 100%;
    height: 100%;
    transform: translateY(0.5px); /* 隙間防止 */
}
.wave-sep.flip.one svg {
    transform: scaleY(-1);
    transform-origin: center;
}

/* カラーバリエーション */
.wave-sep-deepgreen path {
    fill: var(--wave-fill-deepgreen);
}
.wave-sep-green path {
    fill: var(--wave-fill-green);
}
.wave-sep-terracotta path {
    fill: var(--wave-fill-terracotta);
}
.wave-sep-beige path {
    fill: var(--accent-beige);
}

/* 最終sectionとfooterとの間のなみなみ */
.wave-sep.is-back {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    bottom: -120px;
    width: 115vw;
    height: clamp(260px, 34vw, 560px);
    overflow: visible;
    pointer-events: none;
    z-index: -1;
}
#section-information > .wave-sep.is-back {
    position: absolute !important; /* 既存relativeを打ち消し */
    left: 50%;
    transform: translateX(-50%);
    bottom: -150px !important; /* ← 覆い量：-80〜-220pxで微調整OK */
    width: 122vw !important; /* ← 横は広めにして端のスキマ防止 */
    height: min(60vh, 640px) !important; /* ← 大きく覆う */
    line-height: 0 !important;
    overflow: visible !important;
    pointer-events: none !important;
    z-index: 1 !important; /* フォーム(2)の背面、背景より前 */
}
#section-information > .wave-sep.is-back svg {
    display: block;
    width: 100%;
    height: 100%;
}
#section-information > .wave-sep.is-back path {
    fill: var(--accent-beige);
}

.wave-sep .wave-sep-deepgreen .flip .one {
    z-index: 2;
}