html, body {
  height: 100%;
  margin: 0;
}

body {
  background: #000;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto,
               "Hiragino Kaku Gothic ProN", "Noto Sans JP", sans-serif;
}

/* 全画面 */
.hero {
  position: relative;
  width: 100vw;
  height: 100vh;
  overflow: hidden;
}

/* 背景動画 */
.bg-video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

/* 暗幕 */
.overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(0,0,0,.35), rgba(0,0,0,.55));
}

/* 中央配置（縦並び） */
.content {
  position: relative;
  z-index: 2;

  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center; /* 縦中央 */
  align-items: center;     /* 横中央 */

  gap: 18px;              /* ロゴとボタンの間隔 */
  padding: 24px;
  text-align: center;
}

/* ロゴ画像 */
.logo-img {
  width: min(320px, 70vw);
  height: auto;
  display: block;
  filter: drop-shadow(0 8px 24px rgba(0,0,0,.6));
}

/* ボタン */
.cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;

  padding: 14px 22px;
  border-radius: 999px;
  text-decoration: none;

  color: #111;
  background: rgba(255,255,255,.92);
  font-weight: 700;

  box-shadow: 0 10px 30px rgba(0,0,0,.35);
  border: 1px solid rgba(255,255,255,.35);
  min-width: 220px;

  transition: transform .15s ease, background .15s ease;
}

.cta:hover {
  transform: translateY(-2px);
  background: #fff;
}

.cta:active {
  transform: translateY(0);
}

/* モバイル調整 */
@me