.tool-header,
.tool-header * {
  box-sizing: border-box;
}

.tool-header {
  height: 66px;
  border-bottom: 1px solid #e5e7eb;
  background: #fff;
}

.tool-header-inner {
  width: min(1180px, calc(100% - 40px));
  height: 100%;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
}

.tool-header h1 {
  margin: 0;
  color: #24232a;
  font-family: "Noto Serif SC", "Songti SC", serif;
  font-size: 27px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0;
}

.tool-back-link {
  width: fit-content;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: #4c4a52;
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
}

.tool-back-link:hover {
  color: #e84c68;
}

.tool-back-link svg {
  width: 22px;
  height: 22px;
  display: block;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.tool-header-end {
  min-width: 1px;
  justify-self: end;
}

@media (max-width: 720px) {
  .tool-header {
    height: 58px;
  }

  .tool-header-inner {
    width: calc(100% - 28px);
  }

  .tool-header h1 {
    font-size: 23px;
  }

  .tool-back-link span {
    display: none;
  }
}