section.photo_contest_rules {
  max-width: 1200px;
  padding: 0 10px;
  font-family: 'Helvetica Neue', sans-serif;
  color: #111;
  line-height: 1.8;
  font-size: 14px;
  margin: 0px auto 50px;
}
section.photo_contest_rules h1 {
  font-size: 24px;
  font-weight: bold;
  text-align: center;
  margin-bottom: 40px;
  letter-spacing: 0.05em;
}
section.photo_contest_rules h2 {
  font-size: 20px;
  font-weight: bold;
  margin-top: 40px;
  margin-bottom: 16px;
  border-bottom: 1px solid #ddd;
  padding-bottom: 8px;
}
.photo_contest_img {
  width: 100%;
}
.photo_contest_img img {
  width: 60%;
  display: block;
  margin: 0 auto;
}
.photo_contest_title {
  font-size: 2rem;
  font-weight: bold;
  text-align: left;
  margin-top: 20px;
  letter-spacing: 0.05em;    
}
.photo_contest_name  {
}
.photo_contest_model  {
}
.scribble-line {
  border: none;
  height: 16px; /* ← 少し高さも上げるとバランスが良い */
  background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="100%" height="16"><path d="M0,8 C10,6 20,10 30,8 C40,6 50,10 60,8 C70,6 80,10 100,8" stroke="%23000" stroke-width="4" fill="none" stroke-linecap="round" stroke-opacity="0.8"/></svg>') repeat-x;
  background-size: 100px 16px;
  transform: rotate(-0.4deg);
  margin: 3em 0;
}
@media screen and (min-width: 768px) {
.photo_contest_title {
  font-size: 3rem;
  font-weight: bold;
  text-align: left;
  margin-top: 20px;
  letter-spacing: 0.05em;    
}
.photo_contest_name  {
  font-size: 1.5rem;
}
.photo_contest_model  {
    font-size: 1.5rem;
}    
}