:root{ --tsz-radius: 16px; }

.tsz-flow{
  background: var(--bg, #fff);
  padding: 40px 0 60px;
}
.tsz-flow__inner{
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 16px;
}
.tsz-flow__heading{
  text-align:center;
  margin: 0 0 36px;
  font-size: clamp(22px, 3vw, 28px);
  font-weight: 700;
  color: var(--text, #1f2a33);
  letter-spacing: .04em;
}
.tsz-flow__heading--serif{
  font-family: "Hiragino Mincho ProN","Yu Mincho","MS Mincho",serif;
}
.tsz-flow__heading--sans{
  font-family: "Noto Sans JP","Hiragino Kaku Gothic ProN","Yu Gothic","Meiryo",sans-serif;
}

/* timeline grid (mobile first) */
.tsz-flow__timeline{
  --col1: 42px;
  --col2: 14px;
  --gap: 10px;
  display:grid;
  grid-template-columns: var(--col1) var(--col2) 1fr;
  column-gap: var(--gap);
  position: relative;
}
.tsz-flow__timeline::before{
  content:"";
  position:absolute;
  top:0;
  bottom:0;
  left: calc(var(--col1) + var(--gap) + (var(--col2) / 2));
  transform: translateX(-50%);
  width: 1.5px;
  background: var(--line, #94c0d1);
  opacity: .75;
}

.tsz-flow__step{ display: contents; }

.tsz-flow__label{
  grid-column: 1;
  padding-top: 4px;
  color: var(--theme, #94c0d1);
  text-align:left;
  white-space:nowrap;
  font-family: "Times New Roman","Hiragino Mincho ProN","Yu Mincho",serif;
}
.tsz-flow__labelStep{ font-size: 13px; letter-spacing: .06em; line-height:1; }
.tsz-flow__labelNum{ font-size: 28px; font-weight: 800; line-height:1; margin-top: 4px; }

.tsz-flow__middle{ grid-column: 2; position: relative; }
.tsz-flow__dot{
  width: 7px;
  height: 7px;
  background: var(--dot, #94c0d1);
  border-radius: 50%;
  margin: 10px auto 0;
}

.tsz-flow__content{
  grid-column: 3;
  padding-bottom: 28px;
}
.tsz-flow__title{
  margin: 0 0 8px;
  font-size: 18px;
  font-weight: 700;
  color: var(--text, #1f2a33);
  font-family: "Noto Sans JP","Hiragino Kaku Gothic ProN","Yu Gothic","Meiryo",sans-serif;
}
.tsz-flow__desc{
  color: var(--muted, #5c6d75);
  font-size: 14px;
  line-height: 1.8;
}
.tsz-flow__desc p{ margin: 0 0 10px; }
.tsz-flow__desc p:last-child{ margin-bottom: 0; }

/* Buttons (per step) */
.tsz-flow__btnRow{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:12px;
}

.tsz-flow__btn{
  display:inline-block;
  padding:14px 24px;
  border-radius:999px;
  font-weight:700;
  text-decoration:none;
  text-align:center;
  border:1px solid rgba(0,0,0,0.08);
  transition: opacity .2s ease;
}
.tsz-flow__btn:hover{ opacity:.92; }

@media (max-width:720px){
  .tsz-flow__btn{ width:100%; }
}

.tsz-flow__step:last-child .tsz-flow__content{ padding-bottom: 0; }

@media (min-width: 721px){
  .tsz-flow__timeline{
    --col1: 48px;
    --col2: 15px;
    --gap: 10px;
    grid-template-columns: var(--col1) var(--col2) 1fr;
    column-gap: var(--gap);
  }
  .tsz-flow__timeline::before{
    left: calc(var(--col1) + var(--gap) + (var(--col2) / 2));
    transform: translateX(-50%);
    width: 2px;
  }
  .tsz-flow__label{ padding-top: 8px; }
  .tsz-flow__labelStep{ font-size: 15px; }
  .tsz-flow__labelNum{ font-size: 32px; }
  .tsz-flow__dot{
    width: 8px;
    height: 8px;
    margin-top: 16px;
  }
  .tsz-flow__content{ padding-bottom: 56px; }
  .tsz-flow__desc{ font-size: 15px; }
}

@media (max-width: 720px){
  .tsz-flow__btn{ width:100%; }
}