:root {
  color-scheme: light;
  font-family: 'Kaiti SC', 'STKaiti', 'KaiTi', sans-serif;
  color: #354b4b;
  background: #d9eee9;
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  background-image: radial-gradient(#b3d6cc 1px, transparent 1px);
  background-size: 20px 20px;
}
button,
select,
a {
  -webkit-tap-highlight-color: transparent;
}
button,
select {
  font: inherit;
  color: inherit;
  cursor: pointer;
  border: 2px solid #c6d9d3;
  border-radius: 13px;
  background: #fff;
  min-height: 46px;
  padding: 9px 14px;
  font-weight: 700;
}
button:hover {
  border-color: #497a6d;
}
button:disabled {
  opacity: 0.4;
  cursor: default;
}
button[aria-pressed='true'] {
  border-color: #326958;
  background: #e4f4c9;
}
:focus-visible {
  outline: 3px solid #235dc1;
  outline-offset: 4px;
}
header {
  max-width: 1440px;
  margin: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 26px 32px;
}
.back {
  color: #354b4b;
  text-decoration: none;
  font-size: 19px;
  font-weight: 700;
  padding: 12px;
}
h1 {
  font-size: 34px;
  margin: 0;
  text-align: center;
}
h1 span {
  display: block;
  font-size: 15px;
  font-weight: 400;
  margin-top: 7px;
}
h2 {
  font-size: 19px;
  margin: 0 0 18px;
}
main {
  max-width: 1440px;
  margin: auto;
  padding: 12px 32px;
  display: grid;
  grid-template-columns: 160px minmax(0, 1fr) 132px;
  gap: 26px;
  align-items: start;
}
.pages,
.palette {
  padding-top: 18px;
}
#pages {
  display: grid;
  gap: 13px;
}
#pages button {
  display: flex;
  align-items: center;
  gap: 12px;
  text-align: left;
  padding: 14px;
}
#pages button span {
  font-size: 28px;
}
.pages p {
  line-height: 1.8;
  font-size: 15px;
}
.paper-caption {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 0 5px 14px;
}
.paper-caption h2 {
  margin: 0;
  font-size: 20px;
}
#save-status {
  font-size: 13px;
}
.paper {
  padding: 12px;
  background: white;
  border-radius: 5px 5px 22px 5px;
  box-shadow:
    0 7px 0 #afcfc3,
    0 15px 25px #476c6618;
}
#drawing {
  display: block;
  width: 100%;
  height: auto;
  touch-action: none;
  user-select: none;
  border: 1px solid #edf0e9;
  background: white;
}
#drawing [data-region] {
  -webkit-tap-highlight-color: transparent;
  cursor: pointer;
}
#drawing [data-region]:focus-visible {
  outline: none;
  stroke: #235dc1;
  stroke-width: 7;
}
.hint {
  text-align: center;
  font-size: 15px;
  margin: 22px 0 16px;
}
.tools {
  display: flex;
  gap: 8px;
  justify-content: center;
  flex-wrap: wrap;
}
.tools label {
  display: flex;
  align-items: center;
  gap: 5px;
}
.tools select {
  padding: 8px 4px;
}
#colors {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px 10px;
}
#colors button {
  padding: 0;
  height: 53px;
  min-width: 46px;
  background: var(--color);
  border: 3px solid #ffffff;
  border-radius: 9px 9px 18px 18px;
  box-shadow: 0 3px 0 #879d9460;
}
#colors button[aria-pressed='true'] {
  outline: 3px solid #354b4b;
  outline-offset: 3px;
}
#colors button[aria-pressed='true']::after {
  content: '✓';
  background: #fff;
  border-radius: 50%;
  padding: 1px 4px;
  color: #354b4b;
}
#color-name {
  font-size: 14px;
  text-align: center;
}
footer {
  text-align: center;
  padding: 26px;
  font-size: 14px;
}
dialog {
  border: 0;
  border-radius: 22px;
  max-width: calc(100% - 32px);
  padding: 30px;
  box-shadow: 0 10px 70px #354b4b40;
}
dialog::backdrop {
  background: #354b4b66;
}
dialog form {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}
@media (max-width: 950px) {
  main {
    grid-template-columns: 120px minmax(0, 1fr);
    gap: 16px;
    padding: 8px 18px;
  }
  .palette {
    grid-column: 2;
    padding: 0;
  }
  .palette h2 {
    display: none;
  }
  #colors {
    grid-template-columns: repeat(6, 1fr);
    gap: 8px;
  }
  #colors button {
    min-width: 0;
    height: 46px;
  }
  header {
    padding: 20px 18px;
  }
}
@media (max-width: 620px) {
  header {
    padding: 16px 10px;
    gap: 7px;
  }
  h1 {
    font-size: 25px;
  }
  h1 span {
    display: none;
  }
  .back {
    font-size: 16px;
    padding: 8px 0;
  }
  header button {
    padding: 8px;
    font-size: 14px;
  }
  main {
    display: flex;
    flex-direction: column;
    padding: 4px 12px;
    gap: 18px;
  }
  .pages {
    padding: 0;
    width: 100%;
  }
  .pages h2,
  .pages p {
    display: none;
  }
  #pages {
    display: flex;
    gap: 6px;
    overflow-x: auto;
    padding: 3px 3px 8px;
    scrollbar-width: thin;
  }
  #pages button {
    flex: 0 0 auto;
    padding: 8px 10px;
    justify-content: center;
    gap: 4px;
    font-size: 14px;
  }
  #pages button span {
    font-size: 21px;
  }
  .studio,
  .palette {
    width: 100%;
  }
  .paper {
    padding: 6px;
  }
  .paper-caption {
    flex-wrap: wrap;
    gap: 4px;
    padding-bottom: 9px;
  }
  .paper-caption h2 {
    font-size: 17px;
  }
  #save-status {
    font-size: 12px;
  }
  .hint {
    font-size: 13px;
    margin: 17px 0 12px;
  }
  .tools {
    gap: 6px;
  }
  .tools button {
    padding: 8px 10px;
    font-size: 14px;
  }
  #colors {
    grid-template-columns: repeat(6, 1fr);
    gap: 12px;
  }
  footer {
    padding: 8px 12px 20px;
  }
}