/* =========================
   基本設定
========================= */

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: "Noto Sans JP", sans-serif;
  color: #2b2430;
  background-color: #fff7fb;
  line-height: 1.8;
  overflow-x: hidden;  /* 横スクロール防止 */
}

a {
  color: inherit;
  text-decoration: none;  /* リンクの青色を消す */
}


/* =========================
   ヘッダー
========================= */

.header {
  position: absolute;   /* FVの上に重ねる */
  top: 0;
  left: 0;
  z-index: 20;    /* 重なり順 */
  width: 100%;
  padding: 28px 7%;   /* 上下 左右 */
  display: flex;  /* 横並び */
  justify-content: space-between;  /* 左右に配置 */
  align-items: center;    /* 上下中央 */
}

.logo {
  font-size: 24px;
  font-weight: 900;  /* 太字 */
  color: #2b2430;
}

.nav {
  display: flex;  /* メニュー横並び */
  gap: 28px;  /* メニュー間余白 */
  font-size: 14px;
  font-weight: 700;
}

.nav a:hover {
  color: #ff6fae;
}


/* =========================
   ファーストビュー
========================= */

.fv {
  position: relative;  /* 装飾を自由配置しやすくする */
  min-height: 100vh;  /* 画面いっぱい高さ */
  padding: 120px 7% 80px;  /* 上 左右 下 */
  display: flex;  /* 横並び */
  align-items: center;  /* 上下中央 */
  justify-content: center;  /* 中央寄せ */
  gap: 80px;  /* 左右の間隔 */
  background:
    radial-gradient(circle at top left, #fff06a 0, transparent 28%),
    linear-gradient(135deg, #fff7fb 0%, #ffd6ea 45%, #d9ccff 100%);
}

.fv-text {
  position: relative;  /* 装飾より前に表示 */
  z-index: 5;
  width: 52%;
}

.fv-label {
  display: inline-block;  /* 横幅を文字サイズだけに */
  margin-bottom: 24px;
  padding: 8px 18px;  /* 内側余白 */
  background-color: #fff06a;
  border: 2px solid #2b2430;  /* 枠線 */
  border-radius: 999px;  /* 丸ボタン */
  font-weight: 700;
  transform: rotate(-2deg);  /* 少し傾ける */
}

.fv h2 {
  margin-bottom: 24px;
  font-size: 64px;  /* 大きい見出し */
  line-height: 1.25;
  font-weight: 900;
  letter-spacing: 0.03em;  /* 文字間 */
}

.fv-desc {
  max-width: 520px;
  margin-bottom: 36px;
  font-size: 17px;
}


/* =========================
   ボタン
========================= */

.btn {
  display: inline-block;  /* 横幅を文字サイズだけに */
  padding: 18px 48px;
  background-color: #ff6fae;
  color: #fff;
  border: 3px solid #2b2430;  /* 枠線 */
  border-radius: 999px;  /* 丸くする */
  font-weight: 900;
  box-shadow: 6px 6px 0 #2b2430;  /* 影 */
  transition: 0.3s;  /* hoverを滑らかに */
}

.btn:hover {
  transform: translate(4px, 4px);  /* 少し動く */
  box-shadow: 2px 2px 0 #2b2430;  /* 影を短く */
}

.btn.white {
  background-color: #fff;
  color: #ff6fae;
}


/* =========================
   スマホ風ボックス
========================= */

.phone {
  position: relative;
  z-index: 5;
  width: 330px;
  min-height: 500px;
  padding: 26px 24px;
  background-color: #fff;
  border: 4px solid #2b2430;
  border-radius: 42px;
  box-shadow: 14px 14px 0 #7c5cff;
  transform: rotate(4deg);  /* 少し傾ける */
}

/* スマホ上の黒線 */
.phone-top {
  width: 90px;
  height: 10px;
  margin: 0 auto 36px;
  background-color: #2b2430;
  border-radius: 999px;
}

/* スマホ内画像 */
.phone-img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: 24px;
  margin-bottom: 24px;
  opacity: 0.92;  /* 少しだけ透明感 */
}

/* チャット風 */
.chat {
  width: fit-content;
  max-width: 230px;
  margin-bottom: 18px;
  padding: 12px 16px;
  border-radius: 20px;
  font-weight: 700;
}

/* 左吹き出し */
.chat.left {
  background-color: #fff06a;
}

/* 右吹き出し */
.chat.right {
  margin-left: auto;
  background-color: #ffd6ea;
}

.phone-text {
  margin-top: 8px;
  text-align: center;
  font-size: 24px;
  line-height: 1.4;
  font-weight: 900;
  color: #7c5cff;
}


/* =========================
   共通タイトル
========================= */

.section-label {
  margin-bottom: 14px;
  color: #ff6fae;
  font-size: 14px;
  font-weight: 900;
  letter-spacing: 0.15em;  /* 文字間 */
  text-transform: uppercase;
  text-align: center;
}

.section-title {
  margin-bottom: 48px;
  text-align: center;
  font-size: 38px;
  line-height: 1.5;
  font-weight: 900;
}


/* =========================
   推し活あるある
========================= */

.reason {
  padding: 110px 7%;
  background-color: #fff;
}

.reason-list {
  max-width: 760px;
  margin: 0 auto;
}

.reason-list p {
  margin-bottom: 18px;
  padding: 22px 28px;
  background-color: #fff7fb;
  border-left: 8px solid #ff6fae;  /* 左線 */
  border-radius: 0 24px 24px 0;
  font-size: 22px;
  font-weight: 700;
}


/* =========================
   できること
========================= */

.can {
  padding: 110px 7%;
  background-color: #7c5cff;
  color: #fff;
}

.can .section-label {
  color: #fff06a;
}

/* シール配置エリア */
.sticker-area {
  position: relative;
  max-width: 850px;
  min-height: 360px;
  margin: 0 auto;
}

/* 丸シール */
.sticker {
  position: absolute;
  width: 190px;
  height: 190px;
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: #fff06a;
  color: #2b2430;
  border: 4px solid #2b2430;
  border-radius: 50%;
  text-align: center;
  font-size: 22px;
  font-weight: 900;
  box-shadow: 8px 8px 0 #2b2430;
}

.sticker01 {
  top: 10px;
  left: 5%;
  transform: rotate(-8deg);
}

.sticker02 {
  top: 110px;
  left: 30%;
  background-color: #ffd6ea;
  transform: rotate(6deg);
}

.sticker03 {
  top: 30px;
  right: 20%;
  background-color: #fff;
  transform: rotate(-4deg);
}

.sticker04 {
  bottom: 0;
  right: 4%;
  background-color: #ff6fae;
  color: #fff;
  transform: rotate(8deg);
}


/* =========================
   タイムライン
========================= */

.step {
  padding: 110px 7%;
  background-color: #fff7fb;
}

.timeline {
  max-width: 760px;
  margin: 0 auto;
  position: relative;
}

/* 真ん中の線 */
.timeline::before {
  content: "";
  position: absolute;
  top: 10px;
  left: 34px;
  width: 4px;
  height: calc(100% - 20px);
  background-color: #2b2430;
}

.timeline-item {
  position: relative;
  display: flex;
  gap: 28px;
  margin-bottom: 42px;
}

/* 数字丸 */
.timeline-item span {
  position: relative;
  z-index: 2;
  width: 72px;
  height: 72px;
  flex-shrink: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: #fff06a;
  border: 3px solid #2b2430;
  border-radius: 50%;
  font-weight: 900;
  box-shadow: 4px 4px 0 #2b2430;
}

/* 説明ボックス */
.timeline-item div {
  padding: 24px 28px;
  background-color: #fff;
  border: 3px solid #2b2430;
  border-radius: 24px;
  box-shadow: 6px 6px 0 #ff6fae;
}

.timeline-item h3 {
  margin-bottom: 8px;
  font-size: 22px;
}


/* =========================
   7日間チャレンジ
========================= */

.challenge {
  padding: 110px 7%;
  background-color: #fff;
}

/* カレンダー */
.calendar {
  max-width: 900px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(7, 1fr);  /* 7列 */
  gap: 12px;
}

.calendar div {
  min-height: 130px;
  padding: 18px 10px;
  background-color: #fff7fb;
  border: 3px solid #2b2430;
  border-radius: 18px;
  text-align: center;
  font-weight: 900;
  box-shadow: 5px 5px 0 #2b2430;
}

/* 色変化 */
.calendar div:nth-child(even) {
  background-color: #ffd6ea;
}

.calendar div:nth-child(3n) {
  background-color: #fff06a;
}

.calendar span {
  display: block;
  margin-top: 12px;
  font-size: 13px;
  font-weight: 700;
}


/* =========================
   CTA
========================= */

.cta {
  padding: 120px 7%;
  text-align: center;
  background:
    linear-gradient(135deg, #ff6fae 0%, #7c5cff 100%);
  color: #fff;
}

.cta .section-label {
  color: #fff06a;
}

.cta h2 {
  margin-bottom: 24px;
  font-size: 44px;
  line-height: 1.5;
  font-weight: 900;
}

.cta p {
  margin-bottom: 36px;
}


/* =========================
   フッター
========================= */

.footer {
  padding: 26px;
  text-align: center;
  background-color: #2b2430;
  color: #fff;
  font-size: 13px;
}


/* =========================
   スマホ対応
========================= */

@media screen and (max-width: 768px) {
  .header {
    padding: 22px 6%;
    flex-direction: column;  /* 縦並び */
    gap: 14px;
  }

  .nav {
    gap: 16px;
    flex-wrap: wrap;
    justify-content: center;
  }

  .logo {
    font-size: 20px;
  }

  .fv {
    flex-direction: column;    /* スマホは縦並び */
    align-items: flex-start;
    gap: 56px;
    padding: 150px 6% 80px;
  }

  .fv-text {
    width: 100%;
  }

  .fv h2 {
    font-size: 42px;
  }

  .phone {
    width: 100%;
    min-height: 460px;
    transform: rotate(0);    /* 傾きを戻す */
  }

  .section-title {
    font-size: 30px;
  }

  .reason,
  .can,
  .step,
  .challenge,
  .cta {
    padding: 80px 6%;
  }

  .reason-list p {
    font-size: 18px;
  }

  /* シールを2列 */
  .sticker-area {
    min-height: auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 18px;
  }

  .sticker {
    position: static;
    width: 100%;
    height: 150px;
    transform: none;
    font-size: 18px;
  }

  /* カレンダー2列 */
  .calendar {
    grid-template-columns: 1fr 1fr;
  }

  .cta h2 {
    font-size: 32px;
  }
}