.rules-page .rules-hero {
  padding: 46px 56px;
  color: white;
  background:
    linear-gradient(90deg, #07336be6, #0c4f8422),
    url("/images/naming-hero.png") center 45% / cover;
}
.rules-hero > span {
  font-size: 12px;
  letter-spacing: 3px;
  color: #b7d8ff;
}
.rules-page .rules-hero h1 {
  font-family: SimSun, serif;
  font-size: 42px;
  letter-spacing: 4px;
  margin: 12px 0;
}
.rules-page .rules-hero p {
  font-size: 16px;
  color: #dbeaff;
}
.rules-layout {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: 38px;
  padding: 40px;
}
.rules-directory {
  align-self: start;
  position: sticky;
  top: 24px;
  border: 1px solid #e3ebf5;
  border-radius: 10px;
  padding: 22px 16px;
  background: #f8fbff;
}
.rules-directory > span {
  display: block;
  font-size: 16px;
  font-weight: bold;
  padding: 0 10px 14px;
  border-bottom: 1px solid #e2eaf5;
  margin-bottom: 10px;
}
.rules-directory > a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 8px;
  font-size: 13px;
  color: #526a8d;
  border-radius: 5px;
}
.rules-directory > a:hover {
  background: #e9f2ff;
  color: #0767db;
}
.rules-directory small {
  color: #96adc9;
  font:
    14px Georgia,
    serif;
}
.rules-directory > a:last-child {
  margin-top: 16px;
  border-top: 1px solid #e2eaf5;
  padding-top: 18px;
  font-size: 12px;
  color: #1669cd;
  line-height: 1.8;
}
.rules-content {
  min-width: 0;
}
.rules-summary {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}
.rules-summary > div {
  display: flex;
  gap: 12px;
  align-items: center;
  padding: 20px 14px;
  background: #f2f7ff;
  border: 1px solid #dfebff;
  border-radius: 8px;
  color: #1770dc;
}
.rules-summary svg {
  flex-shrink: 0;
}
.rules-summary strong {
  font-size: 15px;
  font-weight: 600;
  white-space: nowrap;
}
.rules-summary small {
  display: block;
  font-size: 11px;
  color: #7d91ad;
  font-weight: 400;
  margin-top: 5px;
}
.rules-page .rules-intro {
  padding: 30px 0 24px;
  border-bottom: 1px solid #e6edf6;
}
.rules-page .rules-intro h2 {
  font-size: 24px;
  margin-bottom: 12px;
}
.rules-page .rules-intro p {
  font-size: 14px;
  color: #647b9b;
  line-height: 1.9;
}
.rules-intro > span {
  display: flex;
  gap: 7px;
  align-items: center;
  margin-top: 14px;
  font-size: 12px;
  color: #8a9ab1;
}
.rules-section {
  padding: 28px 0;
  border-bottom: 1px solid #e6edf6;
  scroll-margin-top: 24px;
}
.rules-page .rules-section h2 {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 19px;
  margin-bottom: 17px;
}
.rules-section h2 > span {
  font:
    italic 24px Georgia,
    serif;
  color: #3983dc;
}
.rules-page .rules-section p {
  font-size: 14px;
  line-height: 2;
  color: #536985;
  position: relative;
  padding-left: 32px;
  margin-top: 12px;
  text-align: justify;
}
.rules-section p > b {
  position: absolute;
  left: 0;
  top: 0;
  font-size: 11px;
  color: #97a9bf;
  font-weight: 400;
}
.rules-end {
  margin-top: 28px;
  border-radius: 8px;
  background: #f1f7ff;
  padding: 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  color: #3470b7;
  flex-wrap: wrap;
}
.rules-page .rules-end p {
  font-size: 13px;
  flex: 1;
  min-width: 160px;
}
.rules-end a {
  font-size: 13px;
  font-weight: bold;
}
@media (max-width: 1100px) {
  .rules-layout {
    grid-template-columns: 180px minmax(0, 1fr);
    padding: 30px;
    gap: 26px;
  }
  .rules-summary {
    gap: 8px;
  }
  .rules-summary > div {
    padding: 16px 10px;
    gap: 8px;
  }
  .rules-summary svg {
    width: 20px;
  }
  .rules-summary strong {
    font-size: 13px;
  }
  .rules-summary small {
    font-size: 10px;
  }
}
@media (max-width: 900px) {
  .rules-layout {
    grid-template-columns: minmax(0, 1fr);
  }
  .rules-directory {
    display: none;
  }
}
@media (max-width: 480px) {
  .rules-page .rules-hero {
    padding: 32px 22px;
  }
  .rules-page .rules-hero h1 {
    font-size: 34px;
  }
  .rules-page .rules-hero p {
    font-size: 14px;
    line-height: 1.9;
  }
  .rules-layout {
    padding: 24px 18px;
  }
  .rules-summary > div {
    flex-direction: column;
    align-items: flex-start;
    padding: 14px 10px;
    gap: 8px;
  }
  .rules-summary strong {
    font-size: 12px;
  }
  .rules-summary small {
    font-size: 9px;
    white-space: normal;
  }
  .rules-page .rules-intro h2 {
    font-size: 22px;
  }
  .rules-page .rules-section h2 {
    font-size: 17px;
  }
  .rules-page .rules-section p {
    font-size: 13px;
    line-height: 1.95;
  }
  .rules-end {
    padding: 16px;
  }
}