@font-face {
  font-family: Fraunces;
  font-style: normal;
  font-weight: 560;
  font-display: swap;
  src: url("/fonts/fraunces-digits.woff2") format("woff2");
  unicode-range: U+002B-002E, U+0030-003A, U+2212;
}

@font-face {
  font-family: "ZCOOL XiaoWei";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("/fonts/zcool-xiaowei-kedu.woff2") format("woff2");
  unicode-range: U+523B, U+5EA6;
}

:root {
  --paper: #f3f6f7;
  --ink: #173036;
  --quiet: #34555c;
  --faint: #4d686e;
  --line: #c5d4d8;
  --seal: #c43228;
  --sans: "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Source Han Sans SC", "Microsoft YaHei", sans-serif;
  --serif: Fraunces, "Iowan Old Style", Palatino, "Palatino Linotype", "Songti SC", serif;
  --mark: "ZCOOL XiaoWei", "Songti SC", "STSong", "Noto Serif SC", "SimSun", serif;
  color-scheme: light;
}

* { box-sizing: border-box; }

[hidden] { display: none !important; }

html {
  background: var(--paper);
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--sans);
  font-size: 1rem;
  line-height: 1.5;
  padding-bottom: env(safe-area-inset-bottom);
  overflow-x: clip;
}

::selection {
  background: #f3c7c2;
  color: var(--ink);
}

button,
input,
select { touch-action: manipulation; }

.mast,
.desk,
.foot {
  width: min(1040px, calc(100% - 1.5rem));
  margin-inline: auto;
}

.mast {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  grid-template-areas:
    "title clock"
    "lede lede";
  align-items: end;
  gap: 0.2rem 0.75rem;
  padding: max(0.85rem, env(safe-area-inset-top)) 0 0.65rem;
}

h1 {
  grid-area: title;
  margin: 0;
  font-family: var(--mark);
  font-size: 2.5rem;
  font-weight: 400;
  line-height: 0.9;
  letter-spacing: 0.04em;
}

.lede {
  grid-area: lede;
  margin: 0;
  color: var(--quiet);
  font-size: 0.92rem;
}

.now {
  grid-area: clock;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  text-align: right;
  gap: 0.08rem;
}

.now time {
  font-family: var(--serif);
  font-size: 1.25rem;
  font-weight: 560;
  font-variant-numeric: tabular-nums lining-nums;
  letter-spacing: 0;
  line-height: 1;
  min-width: 8.2ch;
}

.now span {
  color: var(--quiet);
  font-size: 0.78rem;
}

#now-zone { color: var(--faint); }

.desk {
  display: block;
  padding-bottom: 1.4rem;
}

.scale {
  position: sticky;
  top: 0;
  z-index: 2;
  display: flex;
  flex-wrap: wrap;
  gap: 0.1rem 0.85rem;
  margin: 0 -0.15rem;
  padding: 0.2rem 0.15rem 0.35rem;
  background: var(--paper);
  border-bottom: 1px solid var(--line);
}

.scale button {
  appearance: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-end;
  gap: 0.28rem;
  width: auto;
  min-height: 2.75rem;
  margin: 0;
  padding: 0.4rem 0.05rem 0.28rem;
  border: 0;
  background: none;
  color: var(--quiet);
  font: inherit;
  font-size: 0.98rem;
  text-align: center;
  cursor: pointer;
}

.scale button::after {
  content: "";
  width: 100%;
  height: 2px;
  background: transparent;
}

.scale button[aria-selected="true"] {
  color: var(--ink);
  font-weight: 600;
}

.scale button[aria-selected="true"]::after {
  background: var(--seal);
}

.scale button:focus-visible,
.text-btn:focus-visible,
#copy:focus-visible,
#install:focus-visible,
.choice input:focus-visible,
.check input:focus-visible,
.hms-signs button:focus-visible {
  outline: 2px solid var(--seal);
  outline-offset: 3px;
}

#reading-main {
  margin: 0.95rem 0 0;
  font-family: var(--sans);
  font-size: 1.7rem;
  font-weight: 500;
  line-height: 1.25;
}

#reading-main.is-prompt {
  color: var(--quiet);
  font-size: 1.2rem;
  font-weight: 500;
}

.chunk {
  display: inline-block;
  margin-right: 0.4em;
  white-space: nowrap;
}

.chunk:last-child { margin-right: 0; }

.num {
  font-family: var(--serif);
  font-weight: 560;
  font-variant-numeric: tabular-nums lining-nums;
  letter-spacing: 0;
}

.unit { margin-left: 0.12em; }

.word { font-weight: 500; }

#reading-note {
  margin: 0.7rem 0 0;
  color: var(--quiet);
}

#reading-parts {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem 1.3rem;
  margin-top: 0.95rem;
  padding-top: 0.8rem;
  border-top: 1px solid var(--line);
}

#reading-parts p { margin: 0; min-width: 4.5rem; }

#reading-parts strong {
  display: block;
  font-family: var(--serif);
  font-size: 1.35rem;
  font-weight: 560;
  font-variant-numeric: tabular-nums lining-nums;
  letter-spacing: 0;
  line-height: 1.1;
}

#reading-parts span {
  color: var(--faint);
  font-size: 0.85rem;
}

#copy,
#install,
.text-btn,
.hms-signs button {
  appearance: none;
  border: 0;
  background: none;
  color: var(--ink);
  font: inherit;
  cursor: pointer;
}

#copy {
  margin-top: 0.9rem;
  min-height: 2.75rem;
  padding: 0.4rem 0;
  border-bottom: 1px solid var(--seal);
}

#install {
  margin-left: 0.7rem;
  padding: 0 0 0.08rem;
  border-bottom: 1px solid var(--seal);
}

form { margin-top: 1.15rem; }

.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.85rem 0.9rem;
}

.grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }

.field {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  min-width: 0;
  color: var(--quiet);
  font-size: 0.92rem;
}

.field input,
.field select {
  width: 100%;
  max-width: none;
  min-width: 0;
  min-height: 2.75rem;
  margin: 0;
  padding: 0.35rem 0;
  border: 0;
  border-bottom: 1px solid var(--line);
  border-radius: 0;
  background: transparent;
  color: var(--ink);
  font: inherit;
  font-size: 1rem;
}

.field input:disabled,
.field input:read-only {
  color: var(--ink);
  opacity: 1;
  -webkit-text-fill-color: var(--ink);
}

.field input:focus-visible,
.field select:focus-visible {
  outline: 2px solid var(--seal);
  outline-offset: 3px;
  border-bottom-color: var(--seal);
}

.choice {
  display: flex;
  gap: 1.2rem;
  margin: 0.9rem 0 0.7rem;
}

.choice label,
.check {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  min-height: 2.75rem;
  color: var(--ink);
  cursor: pointer;
}

.check input,
.choice input {
  width: 1.15rem;
  height: 1.15rem;
  margin: 0;
  accent-color: var(--seal);
}

.row-actions,
.checks {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem 1rem;
  margin-top: 0.35rem;
}

.checks {
  flex-direction: column;
  align-items: flex-start;
  gap: 0;
}

.hms-row {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto minmax(0, 1fr) auto minmax(0, 1fr) auto;
  gap: 0.25rem 0.3rem;
  align-items: end;
  margin-bottom: 0.85rem;
}

.hms-signs {
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding-bottom: 0.35rem;
}

.hms-signs button {
  min-width: 2.4rem;
  min-height: 1.7rem;
  padding: 0.15rem 0.2rem;
  color: var(--quiet);
}

.hms-signs button[aria-pressed="true"] {
  color: var(--ink);
  font-weight: 600;
  box-shadow: inset 0 -2px 0 var(--seal);
}

.colon {
  padding-bottom: 0.7rem;
  color: var(--faint);
  font-family: var(--serif);
  font-size: 1.3rem;
  line-height: 1;
}

.hms-row .text-btn {
  align-self: end;
  min-height: 2.75rem;
  padding: 0 0 0.45rem;
}

.hms-row .field input { text-align: center; }

.sum-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.7rem 0.75rem;
  align-items: end;
  margin-bottom: 0.75rem;
}

.sum-row .text-btn {
  grid-column: 1 / -1;
  justify-self: start;
  min-height: 2.5rem;
}

.text-btn {
  padding: 0.45rem 0;
  color: var(--quiet);
}

.text-btn:hover { color: var(--ink); }

.hint,
.foot {
  color: var(--faint);
  font-size: 0.88rem;
}

.hint {
  margin: 0.45rem 0 0;
}

.foot {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.4rem;
  padding-bottom: max(1.4rem, env(safe-area-inset-bottom));
}

.foot p { margin: 0; }

.foot a {
  color: inherit;
  text-underline-offset: 0.16em;
}

.sr {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@media (min-width: 880px) {
  body { font-size: 1.0625rem; }

  .mast,
  .desk,
  .foot { width: min(1040px, calc(100% - 2.75rem)); }

  .mast {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    gap: 2rem;
    padding: max(1.6rem, env(safe-area-inset-top)) 0 1.35rem;
  }

  h1 { font-size: 4.4rem; }

  .lede {
    margin: 0.8rem 0 0;
    max-width: 24em;
    font-size: 1.0625rem;
  }

  .now time { font-size: 1.85rem; }
  .now span { font-size: 0.95rem; }

  .desk {
    display: grid;
    grid-template-columns: 11.25rem minmax(0, 1fr);
    gap: 2.4rem;
    align-items: start;
    padding-bottom: 2.4rem;
  }

  .scale {
    position: sticky;
    top: 0.75rem;
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 0;
    margin: 0;
    padding: 0.25rem 0 0.4rem;
    border-bottom: 0;
    border-right: 1px solid var(--line);
  }

  .scale button {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 0.35rem 0.15rem 0.35rem 0;
    font-size: inherit;
    text-align: left;
  }

  .scale button::after {
    width: 0.7rem;
    height: 1px;
    background: var(--line);
  }

  .scale button[aria-selected="true"]::after {
    width: 1.65rem;
    height: 2px;
    background: var(--seal);
  }

  #reading-main {
    margin-top: 0;
    font-size: 2.75rem;
  }

  #reading-main.is-prompt { font-size: 1.7rem; }

  #reading-parts strong { font-size: 1.65rem; }

  form { max-width: 38rem; margin-top: 2rem; }

  .grid { gap: 1.05rem 1.8rem; }
  .grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

  .field input,
  .field select { max-width: 16rem; }

  .hms-row { max-width: 36rem; }

  .sum-row .text-btn { grid-column: auto; }
  .sum-row { grid-template-columns: repeat(3, minmax(0, 1fr)) auto; }
}