.houli-voltage{
  max-width:1200px;
  margin:0 auto;
  padding:28px 18px;
  font-family:Arial,Helvetica,sans-serif;
  color:#222;
  line-height:1.65;
  box-sizing:border-box;
}

.houli-voltage *{
  box-sizing:border-box;
}

.houli-voltage h2{
  margin:0 0 12px;
  font-size:26px;
  line-height:1.3;
  color:#17202a;
}

.houli-voltage h3{
  margin:0 0 7px;
  font-size:19px;
  color:#17202a;
}

.houli-voltage p{
  margin:0;
  font-size:15px;
  color:#555;
}

/* Intro */
.hv-intro{
  padding:26px;
  margin-bottom:24px;
  background:#f7f8f9;
  border-radius:12px;
}

.hv-intro strong{
  color:#17202a;
}

/* Voltage cards */
.hv-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:16px;
  margin:24px 0;
}

.hv-card{
  position:relative;
  padding:26px;
  background:#fff;
  border:1px solid #e7e7e7;
  border-radius:12px;
}

.hv-voltage{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-width:60px;
  height:38px;
  margin-bottom:14px;
  padding:0 14px;
  background:#fff3e8;
  color:#f47a20;
  border-radius:30px;
  font-size:17px;
  font-weight:700;
}

.hv-tags{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin-top:15px;
}

.hv-tag{
  padding:7px 11px;
  background:#f5f6f7;
  border-radius:20px;
  color:#555;
  font-size:13px;
}

/* Important */
.hv-warning{
  margin:26px 0;
  padding:20px 22px;
  background:#fff8f2;
  border-left:4px solid #f47a20;
  border-radius:0 10px 10px 0;
}

.hv-warning strong{
  color:#17202a;
}

/* Comparison */
.hv-choice{
  margin:30px 0;
}

.hv-choice-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:14px;
  margin-top:16px;
}

.hv-choice-card{
  padding:18px;
  border:1px solid #e8e8e8;
  border-radius:10px;
  background:#fff;
}

.hv-num{
  display:block;
  margin-bottom:7px;
  font-size:13px;
  font-weight:700;
  color:#f47a20;
}

/* HOULI */
.hv-houli{
  margin-top:30px;
  padding:24px;
  background:#17202a;
  border-radius:12px;
  color:#fff;
}

.hv-houli h2,
.hv-houli h3,
.hv-houli p{
  color:#fff;
}

.hv-houli p{
  opacity:.82;
}

.hv-trust{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:16px;
  margin-top:18px;
}

/* Mobile */
@media(max-width:768px){

  .houli-voltage{
    padding:20px 14px;
  }

  .houli-voltage h2{
    font-size:22px;
  }

  .hv-grid,
  .hv-choice-grid,
  .hv-trust{
    grid-template-columns:1fr;
  }

  .hv-intro,
  .hv-card,
  .hv-houli{
    padding:20px 16px;
  }

}