.br-sp { display: none; }
  @media (max-width: 600px) { .br-sp { display: inline; } }

  :root{
    --c-text:#453a3a;
    --c-accent:#892342;
    --c-border:#d7d8d9;
    --c-muted:#f9f9f9;
  }

  .days_text{
    font-size: 1.3em;
    font-family: "kozuka-gothic-pr6n", sans-serif;
    font-weight: 700;
    color: var(--c-text);
    line-height: 1.6;
    margin: .5em 0 0;
  }

  .guide .copy_flex{
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: .75rem;
    margin: 10px 0 22px;
  }
  .guide .copy_flex .copy_text{
    font-size: 1.1em;
    font-family: "kozuka-gothic-pr6n", sans-serif;
    font-weight: 700;
    color: var(--c-text);
    margin: 0;
  }
  .guide .copy_flex input{
    font-size: 1.1em;
    font-family: "kozuka-gothic-pr6n", sans-serif;
    font-weight: 700;
    color: var(--c-text);
    background: var(--c-muted);
    padding: .4em .6em;
    border: 1px solid #eee;
    border-radius: 6px;
    width: clamp(10ch, 20vw, 16ch);
  }
  .guide .copy_flex button{
    border-radius: 12px;
    border: 1px solid var(--c-text);
    font-size: 1.05em;
    font-family: "kozuka-gothic-pr6n", sans-serif;
    font-weight: 700;
    color: var(--c-text);
    padding: .55em .9em;
    background-color: #FFF;
    cursor: pointer;
    transition: transform .08s ease;
  }
  .guide .copy_flex button:active{ transform: scale(.98); }

  .guide .fs-c-documentArticle__content .c-btn a{
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 76px;
    border-radius: 38px;
    border: 1px solid var(--c-border);
    width: min(70%, 720px);
    margin: 30px auto;
    color: #3c3c3c;
    text-decoration: none;
    transition: box-shadow .2s ease, transform .08s ease;
  }
  .guide .fs-c-documentArticle__content .c-btn a:active{ transform: translateY(1px); }
  .c-btn a span{ font-weight: bold; margin-left: .4em; font-size: 18px; }

  .fs-c-documentArticle__heading[id^="guide"]{
    background-color: inherit;
    color: var(--c-accent);
    font-weight: 700;
    text-align: left;
    border-bottom: 1px solid var(--c-accent);
    padding-bottom: .25em;
    margin-top: 1.2em;
  }

  .coupon-img{ max-width: 100%; height: auto; display: block; }

  /* Utility */
  .visually-hidden {
    position: absolute !important;
    height: 1px; width: 1px;
    overflow: hidden; clip: rect(1px,1px,1px,1px);
    white-space: nowrap; border: 0; padding: 0; margin: -1px;
  }

  /* Existing layout bits kept (trimmed for brevity) */
  .d_none{ display: none !important; }
  .pc_d_none{ display:none; }
  @media (min-width:768px){ .pc_d_none{ display:none; } }
  @media (max-width:768px){
    .days_text{ font-size: 1.2em; }
    .guide .copy_flex input{ width: clamp(14ch, 50vw, 22ch); }
    .guide .copy_flex button{ font-size: 1.05em; margin-left: 0; }
  }


  /* 既存の下部スタイル（必要箇所のみ残し） */
  .scr_top_btn{
    position: fixed;
    right: 1em; bottom: 5em;
    width: 4em; height: 4em;
    display: none; /* 初期は非表示 */
    justify-content: center; align-items: center; flex-direction: column;
    background-color: #777; color: #fff; border-radius: .5em; opacity: .9;
    cursor: pointer;
  }
  .scr_top_btn.show{ display: flex; }
  .angle{
    width: 1em; height: 1em; border-top: 2px solid #fff; border-left: 2px solid #fff;
    transform: rotate(45deg);
  }
  .scr_top_btn p{ margin: 0; }