:root {
  --mainBg: #f7f6ef;
  --mainBlack: #363531;
  --mainGrey: #ccc7c0;
  --mainWhite: #ffffff;
  --lineLight: rgb(223, 223, 223);
  --muted: rgb(117, 117, 117);
  --placeholder: rgb(201, 201, 201);
  --hoverFade: rgb(152, 152, 152);
  --caret: rgb(128, 217, 237);

  --fontMain: ui-sans-serif, system-ui, -apple-system, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", sans-serif;
  --fontSerif: ui-serif, Georgia, "Songti SC", "STSong", "Times New Roman", serif;
  --fontSize: 1.2rem;
  --fontScale: 1;
  --lineHeightBase: 17px;
}

@media (min-width: 1920px) {
  :root {
    --fontSize: 1.5rem;
  }
}

:root[data-font-size="s"] {
  --fontScale: 0.9;
}

:root[data-font-size="l"] {
  --fontScale: 1.15;
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
  width: 100%;
}

html {
  font-size: 10px;
  scroll-padding-top: 12rem;
}

body {
  margin: 0;
  background: var(--mainBg);
  color: var(--mainBlack);
  font-family: var(--fontMain);
  font-size: calc(var(--fontSize) * var(--fontScale));
  line-height: calc(var(--lineHeightBase) * var(--fontScale));
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

button,
input,
select,
textarea {
  font: inherit;
  color: inherit;
}

button {
  cursor: pointer;
  background: transparent;
  border: 0;
  padding: 0;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 1px dotted var(--mainBlack);
  outline-offset: 2px;
}

.frame {
  position: fixed;
  inset: 0;
  border: 6px solid var(--mainBlack);
  pointer-events: none;
  z-index: 999;
}

@media (max-width: 768px) {
  .frame {
    display: none;
  }
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 98;
  background: var(--mainBg);
  border-bottom: 1px solid var(--mainBlack);
}

.headerGrid {
  display: grid;
  grid-template-columns: 33.3333% auto 33.3333%;
  gap: 2rem;
  padding: 2rem 3rem 1.4rem;
  min-height: 28.2rem;
  align-items: start;
}

.enable-scrolled-header .headerGrid {
  min-height: 5.1rem;
  padding: 1.9rem 3rem 1.5rem;
  align-items: center;
}

.enable-scrolled-header .brandSub {
  display: none;
}

.headerCenter {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: 0.2rem;
}

.headerCenter h1 {
  font-size: calc(1.4rem * var(--fontScale));
  font-family: var(--fontSerif);
  font-feature-settings: "smcp";
  font-variant: small-caps;
  font-weight: 400;
  margin: 0;
  text-align: center;
}

.brand {
  display: flex;
  align-items: flex-start;
  gap: 1.2rem;
}

.logo {
  width: 3.4rem;
  height: 3.4rem;
  display: grid;
  place-items: center;
  border: 1px solid var(--mainBlack);
  font-family: var(--fontSerif);
  font-feature-settings: "smcp";
  font-variant: small-caps;
  font-size: calc(1.4rem * var(--fontScale));
}

.brandName {
  font-family: var(--fontSerif);
  font-feature-settings: "smcp";
  font-variant: small-caps;
  font-size: calc(1.4rem * var(--fontScale));
  font-weight: 400;
}

.brandSub {
  margin-top: 0.3rem;
  color: var(--muted);
  font-size: calc(1.1rem * var(--fontScale));
  letter-spacing: 0.08rem;
  text-transform: uppercase;
}

.topActions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: flex-start;
  justify-content: flex-end;
}

.btn,
.btn:visited {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.8rem;
  padding: 0.2rem 0;
  font-family: var(--fontMain);
  font-size: calc(1.1rem * var(--fontScale));
  font-weight: 500;
  line-height: calc(var(--lineHeightBase) * var(--fontScale));
  border-bottom: 1px solid transparent;
  color: var(--mainBlack);
  text-decoration: none;
  white-space: nowrap;
}

.btn:hover {
  opacity: 0.6;
  text-decoration: none;
  border-bottom-color: currentColor;
}

.btnPrimary {
  font-weight: 500;
}

.btnDanger {
  color: #7a2b2b;
}

.btnGhost {
  opacity: 0.9;
}

.mePill {
  padding: 0.4rem 0.8rem;
  border: 1px solid var(--lineLight);
  color: var(--muted);
  font-size: calc(1.1rem * var(--fontScale));
  line-height: calc(var(--lineHeightBase) * var(--fontScale));
}

.fontSizer {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.2rem 0.8rem;
  border: 1px solid var(--lineLight);
  border-radius: 999px;
  background: transparent;
}

.fontSizerLabel {
  color: var(--muted);
  font-size: calc(1.1rem * var(--fontScale));
  letter-spacing: 0.08rem;
  text-transform: uppercase;
}

.fontSizerBtn {
  padding: 0.2rem 0;
}

.fontSizerBtn[aria-pressed="true"] {
  opacity: 1;
  border-bottom-color: currentColor;
}

.page {
  max-width: 1080px;
  margin: 0 auto;
  padding: 3rem 3rem 10rem;
}

.hero {
  padding: 2rem 0 1rem;
}

.heroTitle {
  font-size: calc(1.4rem * var(--fontScale));
  font-family: var(--fontSerif);
  font-feature-settings: "smcp";
  font-variant: small-caps;
  font-weight: 400;
}

.heroSub {
  font-family: var(--fontSerif);
  font-size: calc(1.2rem * var(--fontScale));
  color: var(--muted);
  margin-top: 0.8rem;
  max-width: 72rem;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 5rem 3rem;
  margin-top: 4rem;
  align-items: end;
}

.card {
  border: 1px solid var(--lineLight);
  padding: 2rem 2rem 1.8rem;
  background: transparent;
}

.cardNarrow {
  max-width: 52rem;
  margin: 0 auto;
}

.cardTitle {
  font-family: var(--fontSerif);
  font-weight: 600;
  font-size: calc(1.2rem * var(--fontScale));
  line-height: calc(var(--lineHeightBase) * var(--fontScale));
}

.cardSub {
  margin-top: 0.6rem;
  color: var(--muted);
  font-size: calc(1.1rem * var(--fontScale));
  line-height: calc(var(--lineHeightBase) * var(--fontScale));
}

.cardActions {
  margin-top: 1.2rem;
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.hintBar {
  margin-top: 4rem;
  display: flex;
  gap: 1.2rem;
  align-items: baseline;
  justify-content: space-between;
  padding: 1.6rem 0;
  border-top: 1px solid var(--mainBlack);
  color: var(--muted);
}

.center {
  min-height: calc(100vh - 28.2rem);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2.2rem 0;
}

.form {
  margin-top: 1.2rem;
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}

.field .label {
  color: var(--muted);
  font-size: calc(1.1rem * var(--fontScale));
  letter-spacing: 0.08rem;
  text-transform: uppercase;
  margin-bottom: 0.6rem;
}

.input {
  width: 100%;
  padding: 1rem 1.2rem;
  border: 1px solid var(--lineLight);
  background: transparent;
  outline: none;
  caret-color: var(--caret);
}

.input::placeholder {
  color: var(--placeholder);
}

.input:focus {
  border-color: var(--mainBlack);
}

.err {
  color: #7a2b2b;
  border: 1px solid #7a2b2b;
  padding: 1rem 1.2rem;
  background: transparent;
}

.tips {
  margin-top: 1.2rem;
  color: var(--muted);
  font-size: calc(1.1rem * var(--fontScale));
  line-height: calc(var(--lineHeightBase) * var(--fontScale));
}

.muted {
  color: var(--muted);
}

code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  font-size: calc(1.1rem * var(--fontScale));
  padding: 0.2rem 0.6rem;
  border: 1px solid var(--lineLight);
  background: transparent;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 1rem;
}

th,
td {
  border-bottom: 1px solid var(--lineLight);
  padding: 1rem 0.8rem;
  vertical-align: top;
}

th {
  text-align: left;
  color: var(--muted);
  font-weight: 500;
  font-size: calc(1.1rem * var(--fontScale));
  letter-spacing: 0.08rem;
  text-transform: uppercase;
}

td {
  font-size: calc(1.2rem * var(--fontScale));
}

td.small {
  font-size: calc(1.1rem * var(--fontScale));
  color: var(--muted);
}

@keyframes cellFlash {
  0% {
    background: rgba(128, 217, 237, 0.28);
  }
  100% {
    background: transparent;
  }
}

td.cellFlash {
  animation: cellFlash 900ms ease-out;
}

.split {
  display: grid;
  grid-template-columns: 0.95fr 2.05fr;
  gap: 3rem;
}

.olist {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.olistItem {
  padding: 1rem 1.2rem;
  border: 1px solid var(--lineLight);
  background: transparent;
  cursor: pointer;
}

.olistItem:hover {
  color: var(--hoverFade);
}

.olistItem.active {
  border-color: var(--mainBlack);
}

.oid {
  font-family: var(--fontMain);
  font-size: calc(1.1rem * var(--fontScale));
  font-weight: 500;
}

.osub {
  margin-top: 0.6rem;
  color: var(--muted);
  font-size: calc(1.1rem * var(--fontScale));
  line-height: calc(var(--lineHeightBase) * var(--fontScale));
}

.krow {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: 1rem;
  margin-top: 1rem;
}

.btnRow {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.subnav {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-top: 1.2rem;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 1.8rem;
  transform: translateX(-50%);
  padding: 1rem 1.2rem;
  border: 1px solid var(--mainBlack);
  background: var(--mainBg);
  color: var(--mainBlack);
  display: none;
  max-width: min(72rem, calc(100vw - 2.4rem));
}

.toast.err {
  border-color: #7a2b2b;
  color: #7a2b2b;
}

@media (max-width: 980px) {
  .grid {
    grid-template-columns: 1fr !important;
  }
  .split {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .headerGrid {
    grid-template-columns: 1fr;
    padding: 1.4rem 2rem 1.2rem;
    min-height: auto;
    gap: 1rem;
  }
  .enable-scrolled-header .headerGrid {
    padding: 1.4rem 2rem 1.2rem;
    min-height: auto;
    align-items: start;
  }
  .headerCenter {
    justify-content: flex-start;
  }
  .topActions {
    justify-content: flex-start;
  }
  .page {
    padding: 2rem 2rem 8rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }
}