/* =========================
   全体リンク
========================= */
.sus_btn {
  display: block;
  text-decoration: none;
  color: #000;
  width: fit-content;
  margin: 0 auto;
}

/* =========================
   外枠（背景・角丸）
========================= */
.sus_frame {
  background: #f0f3f5;
  border-radius: 24px;
  width: 367px;
  height: 430px;
  padding: 0;
  margin: 0 auto;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: 0.2s ease;
}

/* =========================
   表紙画像
========================= */
.book {
  width: 246px;
  max-width: none;
  height: auto;
  display: block;
  margin: 0;
  box-shadow: 0 10px 20px rgba(0,0,0,0.1);
  transition: 0.25s ease;
}

/* =========================
   矢印
========================= */
.arrow {
  width: 24px;
  height: 24px;
  border-top: 5px solid #004bb1;
  border-right: 5px solid #004bb1;
  position: absolute;
  top: 50%;
  right: 30px;
  transform: translateY(-50%) rotate(45deg);
}

/* =========================
   テキスト
========================= */
.sus_text {
  color: #004bb1;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0;
  line-height: 25px;
  text-align: center;
  margin-top: 20px;
}

.sus_line {
  display: block;
}

.sus_line-main {
  white-space: nowrap;
}

.sus_sp_break {
  display: none;
}

/* =========================
   バックナンバーリンク
========================= */
.bkBtn {
  margin-top: 48px;
  text-align: center;
}

#sustainability .sus_box__type2 .bkBtn {
  justify-content: center;
}

#sustainability .sus_box__type2 .bkBtn a {
  margin-bottom: 0;
  padding: 10px 16px;
  background: #f0f3f5;
  color: #004bb1;
  font-size: 12px;
  line-height: 1;
}

#sustainability .sus_box__type2 .bkBtn a::after {
  width: 7px;
  height: 7px;
  border-color: #004bb1;
  border-width: 2px;
  margin-left: 12px;
}

.bk_sp_break {
  display: none;
}

/* =========================
   ホバー（ボタン感）
========================= */
.sus_btn:hover .sus_frame {
  transform: translateY(-3px);
  opacity: 0.95;
}

.sus_btn:hover .book {
  opacity: 0.9;
  filter: brightness(0.95);
}

.sus_btn:active .sus_frame {
  transform: translateY(0);
}

/* =========================
   スマホ対応
========================= */
@media screen and (max-width: 768px) {

  .sus_frame {
    width: 282px;
    height: 331px;
    border-radius: 13px;
  }

  .book {
    width: 184px;
    max-width: none;
  }

  .arrow {
    width: 20px;
    height: 20px;
    border-top-width: 4px;
    border-right-width: 4px;
    right: 24px;
    transform: translateY(-50%) rotate(45deg);
  }

  .sus_text {
    max-width: 282px;
    margin-top: 22px;
    font-size: 18px;
    line-height: 25px;
  }

  .sus_line-main {
    white-space: nowrap;
  }

  .sus_sp_break {
    display: inline;
  }

  .bkBtn {
    margin-top: 24px;
  }

  .bk_sp_break {
    display: inline;
  }

  #sustainability .sus_box__type2 .bkBtn a {
    display: inline-block;
    box-sizing: border-box;
    position: relative;
    width: 280px;
    max-width: calc(100vw - 48px);
    padding: 8px 36px 8px 14px;
    font-size: 12px;
    line-height: 1.45;
    text-align: center;
    white-space: normal;
  }

  #sustainability .sus_box__type2 .bkBtn a::after {
    width: 8px;
    height: 8px;
    border-width: 2px;
    position: absolute;
    top: 50%;
    right: 17px;
    margin-left: 0;
    transform: translateY(-50%) rotate(45deg);
  }
}