:root {
  font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  color:#253044;
  background:#f5f7fa;
  font-synthesis:none;
  font-size:16px;
  --blue:#315cdb;
  --line:#e4e8f0;
  --muted:#67748a;
  --mono:"SFMono-Regular",Consolas,"Liberation Mono",monospace;
}

* {
  box-sizing:border-box;
}

body {
  margin:0;
}

button,select,input {
  font:inherit;
}

button,a,input,select {
  -webkit-tap-highlight-color:transparent;
}

button {
  cursor:pointer;
}

button:disabled {
  cursor:not-allowed;
  opacity:.55;
}

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

a:hover {
  color:var(--blue);
}

button:focus-visible,a:focus-visible,select:focus-visible,input:focus-visible,[tabindex="0"]:focus-visible {
  outline:3px solid #7397f1;
  outline-offset:4px;
}

button {
  transition:background .14s,border-color .14s,color .14s;
}

button,select {
  min-height:40px;
}

code {
  font-family:var(--mono);
}

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

.skip-link {
  position:fixed;
  top:-70px;
  left:20px;
  background:white;
  padding:12px;
  z-index:5;
}

.skip-link:focus {
  top:10px;
}

.site-header {
  height:68px;
  border-bottom:1px solid var(--line);
  display:flex;
  justify-content:space-between;
  align-items:center;
  padding:0 max(32px,calc((100vw - 1240px)/2));
  background:#fff;
}

.brand {
  display:flex;
  align-items:center;
  gap:13px;
  font-weight:700;
  font-size:18px;
  letter-spacing:-.5px;
}

.brand-mark {
  display:grid;
  position:relative;
  place-items:center;
  background:var(--blue);
  color:white;
  width:36px;
  height:36px;
  border-radius:9px;
  font:700 29px var(--mono);
  padding-bottom:4px;
}

.brand-mark span {
  position:absolute;
  font-size:22px;
  bottom:3px;
  right:3px;
  color:#b9cbff;
}

.brand-divider {
  font-weight:400;
  color:#bec6d4;
  margin:0 10px;
}

.brand-sub {
  font-weight:400;
  color:#637086;
  letter-spacing:-.3px;
}

.site-header nav {
  display:flex;
  gap:26px;
  font-size:14px;
  font-weight:500;
}

.site-header nav .external-mark {
  color:#697990;
  margin-left:3px;
}

.header-actions {
  display:flex;
  align-items:center;
  gap:24px;
}

.language-switch {
  color:#50617e;
  background:#fff;
  border:1px solid var(--line);
  border-radius:6px;
  padding:8px 10px;
  font-size:14px;
  max-width:100%;
}

:lang(zh-CN) h1 {
  letter-spacing:0;
  line-height:1.3;
}

main {
  max-width:1240px;
  margin:auto;
  padding:28px 0 30px;
}

.page-heading {
  display:flex;
  align-items:center;
  justify-content:space-between;
  margin-bottom:22px;
}

h1 {
  font-size:36px;
  letter-spacing:-1.4px;
  line-height:1.15;
  font-weight:650;
  margin:0 0 11px;
}

.intro {
  font-size:16px;
  color:var(--muted);
  margin:0;
}

.format-badge {
  display:inline-flex;
  gap:10px;
  align-items:center;
  font:600 12px var(--mono);
  color:#50617e;
  border:1px solid #dce2ed;
  padding:8px 10px;
  border-radius:6px;
  background:#f9fafc;
  letter-spacing:.5px;
}

.format-badge span {
  border-left:1px solid #dce2ed;
  padding-left:10px;
  color:#7b879a;
  font-size:12px;
  letter-spacing:0;
  font-weight:400;
}

.expression-card {
  background:#162139;
  color:#fff;
  border:1px solid #202e49;
  border-radius:12px;
  overflow:hidden;
  box-shadow:0 6px 18px #1c304b09;
}

.expression-top {
  display:flex;
  justify-content:space-between;
  align-items:center;
  padding:18px 27px 0;
}

.expression-top h2 {
  font-size:14px;
  font-weight:500;
  color:#b5c1d8;
  margin:0;
}

.valid-status {
  font:500 12px var(--mono);
  color:#a5d8c3;
  display:flex;
  align-items:center;
  gap:7px;
}

.valid-status:before {
  content:'✓';
  font-family:inherit;
  font-size:12px;
}

.valid-status.warning {
  color:#f2cb8d;
}

.valid-status.warning:before {
  content:'!';
}

.expression-line {
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:25px;
  padding:12px 27px 18px;
  min-height:91px;
}

#expression {
  font-family:var(--mono);
  font-size:34px;
  line-height:1.5;
  font-weight:500;
  letter-spacing:1px;
  overflow-wrap:anywhere;
  word-break:break-word;
  min-width:0;
}

#expression.invalid-expression {
  font-size:23px;
  color:#edc998;
}

.copy-button {
  border:1px solid #53637f;
  background:#263753;
  color:#eef3ff;
  border-radius:6px;
  font-size:14px;
  display:flex;
  gap:9px;
  align-items:center;
  padding:10px 14px;
  flex-shrink:0;
}

.copy-button:hover {
  background:#35496d;
  border-color:#7994bc;
}

.expression-bottom {
  padding:16px 27px;
  display:flex;
  align-items:flex-start;
  gap:12px;
  background:#1c2a44;
  border-top:1px solid #31415c;
}

.expression-bottom p {
  color:#c8d4e9;
  font-size:14px;
  line-height:1.65;
  margin:0;
}

.schedule-icon {
  font-size:23px;
  line-height:1;
  color:#8197b9;
}

.presets {
  display:flex;
  align-items:center;
  gap:15px;
  margin:16px 0 22px;
}

.presets>span {
  font-size:14px;
  color:#79859a;
  white-space:nowrap;
}

#presets {
  display:flex;
  gap:7px;
  flex-wrap:wrap;
}

#presets button {
  background:transparent;
  border:1px solid #dfe5ef;
  border-radius:6px;
  padding:6px 10px;
  min-height:33px;
  font-size:14px;
  color:#64748b;
}

#presets button:hover {
  background:#eaf0ff;
  color:var(--blue);
}

#presets button[aria-pressed=true] {
  color:#315cce;
  background:#ecf1ff;
  border-color:#cbd7ff;
}

.workspace {
  display:grid;
  grid-template-columns:minmax(0,1fr) 315px;
  gap:24px;
  align-items:start;
}

.panel {
  background:#fff;
  border:1px solid var(--line);
  border-radius:10px;
  overflow:hidden;
}

.panel-heading {
  display:flex;
  justify-content:space-between;
  align-items:center;
  padding:18px 23px;
  border-bottom:1px solid var(--line);
  min-height:68px;
  gap:12px;
}

.panel-heading h2,.reference h2 {
  font-size:15px;
  font-weight:600;
  margin:0;
  letter-spacing:-.15px;
}

.text-button {
  font-size:14px;
  border:0;
  color:#718097;
  background:transparent;
  min-height:30px;
  padding:2px 0 2px 10px;
}

.text-button:hover {
  color:var(--blue);
}

.text-button span[aria-hidden] {
  font-size:18px;
  margin-right:5px;
}



.tabs {
  display:flex;
  border-bottom:1px solid var(--line);
  padding:0 17px;
  overflow-x:auto;
  scrollbar-width:thin;
}

.tabs button {
  font-size:14px;
  background:none;
  border:0;
  border-bottom:2px solid transparent;
  min-height:55px;
  padding:14px 12px;
  white-space:nowrap;
  color:#778296;
}

.tabs button:hover {
  color:var(--blue);
  background:#f7f9ff;
}

.tabs button[aria-selected=true] {
  color:var(--blue);
  border-bottom-color:var(--blue);
  font-weight:600;
}

.field-panel {
  padding:24px;
  min-height:380px;
}

.field-heading {
  display:flex;
  align-items:start;
  justify-content:space-between;
  gap:16px;
  margin-bottom:23px;
}

.field-heading h3 {
  font-size:19px;
  letter-spacing:-.4px;
  font-weight:600;
  margin:0 0 6px;
}

.field-heading p {
  font-size:14px;
  color:var(--muted);
  margin:0;
  line-height:1.5;
}

.range-badge {
  font:12px var(--mono);
  color:#8692a7;
  background:#f5f7fb;
  padding:6px 9px;
  border-radius:4px;
}

.rules {
  margin:0;
  padding:0;
  border:0;
  min-width:0;
  display:flex;
  flex-direction:column;
  gap:9px;
}

.rule {
  border:1px solid #e4e8f1;
  border-radius:7px;
  overflow:hidden;
}

.rule.selected {
  background:#f6f8ff;
  border-color:#adbef0;
}

.rule-label {
  display:flex;
  align-items:center;
  gap:11px;
  padding:13px 15px;
  min-height:50px;
  font-size:14px;
  cursor:pointer;
  line-height:1.5;
}

.rule-label input {
  accent-color:var(--blue);
  width:16px;
  height:16px;
  flex-shrink:0;
  margin:0;
}

.rule-label code {
  margin-left:auto;
  color:#697990;
  font-size:12px;
  white-space:nowrap;
  max-width:33%;
  overflow:hidden;
  text-overflow:ellipsis;
}

.rule.selected .rule-label {
  color:#254bb0;
  font-weight:500;
}

.rule.selected .rule-label code {
  color:#718ed7;
}

.rule-controls:empty {
  display:none;
}

.rule-controls {
  padding:0 18px 0 42px;
}

.control-row {
  display:flex;
  align-items:flex-end;
  gap:15px;
  flex-wrap:wrap;
  margin:2px 0 16px;
}

.control-label {
  display:flex;
  flex-direction:column;
  gap:7px;
  font-size:14px;
  color:#6d7c98;
}

.control-label select {
  font:14px var(--mono);
  color:#33435c;
  background:#fff;
  border:1px solid #d6deec;
  border-radius:5px;
  min-width:83px;
  padding:8px 28px 8px 11px;
  min-height:39px;
}

.control-unit {
  font-size:14px;
  color:#6b7991;
  padding-bottom:11px;
}

.control-help {
  font-size:12px;
  color:#76839b;
  line-height:1.65;
  margin:8px 0 16px;
}

.value-grid {
  display:grid;
  grid-template-columns:repeat(10,minmax(0,1fr));
  gap:5px;
  margin:5px 0 12px;
  max-height:265px;
  overflow-y:auto;
  padding:4px;
}

.value-button {
  font:14px var(--mono);
  border:1px solid #dce3f1;
  background:#fff;
  border-radius:5px;
  color:#61728d;
  padding:7px 3px;
  min-height:34px;
}

.value-button:hover {
  border-color:#809dea;
}

.value-button[aria-pressed=true] {
  color:#fff;
  background:var(--blue);
  border-color:var(--blue);
}

.named-grid {
  grid-template-columns:repeat(7,minmax(0,1fr));
}

.year-grid {
  grid-template-columns:repeat(6,minmax(0,1fr));
}

.field-error {
  font-size:14px;
  line-height:1.6;
  color:#b54d22;
}

.field-error:not(:empty) {
  margin-top:15px;
}

.field-note {
  border-top:1px solid #edf0f5;
  background:#fcfdff;
  display:flex;
  gap:10px;
  padding:16px 23px;
  align-items:flex-start;
  min-height:58px;
}

.field-note p {
  font-size:12px;
  line-height:1.7;
  color:#7b879c;
  margin:0;
}

.info-icon {
  display:grid;
  place-items:center;
  border:1px solid #9caac0;
  border-radius:50%;
  font:12px var(--mono);
  color:#8b9ab3;
  width:14px;
  height:14px;
  flex-shrink:0;
  margin-top:3px;
}

.executions .panel-heading {
  padding:18px 20px;
}

.utc-badge {
  font:12px var(--mono);
  letter-spacing:.5px;
  color:#70829d;
  background:#f0f4f9;
  border:1px solid #e3e9f3;
  border-radius:4px;
  padding:4px 6px;
}

.executions ol {
  list-style:none;
  margin:0;
  padding:4px 20px 0;
}

.executions li {
  display:flex;
  align-items:center;
  gap:12px;
  border-bottom:1px solid #edf0f5;
  padding:14px 0;
}

.execution-index {
  font:12px var(--mono);
  color:#697990;
}

.executions time {
  display:flex;
  flex-direction:column;
  gap:5px;
  flex:1;
}

.executions time span {
  font-size:12px;
  color:#7b899f;
}

.executions time strong {
  font:500 15px var(--mono);
  color:#3a4a65;
}

.execution-day {
  font-size:12px;
  color:#697990;
}

.executions li:first-child time strong {
  color:var(--blue);
}

.executions li.preview-empty {
  font-size:14px;
  line-height:1.7;
  padding:20px 0;
  color:#997544;
}

.preview-note {
  font-size:12px;
  font-family:var(--mono);
  line-height:1.6;
  color:#697990;
  padding:0 20px;
  margin:13px 0 15px;
}

.timezone-note {
  font-size:12px;
  line-height:1.7;
  color:#7c889c;
  background:#fafbfd;
  border-top:1px solid #edf0f5;
  margin:0;
  padding:14px 20px;
}

.reference {
  padding:24px 8px 4px;
}

.reference h2 {
  font-size:14px;
  margin-bottom:15px;
  color:#68778f;
}

.reference dl {
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:11px 12px;
  margin:0;
}

.reference dl div {
  display:flex;
  align-items:baseline;
  gap:10px;
}

.reference dt {
  font:12px var(--mono);
  color:#597498;
  width:18px;
  flex-shrink:0;
}

.reference dd {
  font-size:12px;
  line-height:1.5;
  color:#697990;
  margin:0;
}

.reference dl div:last-child {
  grid-column:span 2;
}

.breakdown {
  margin-top:25px;
}

.breakdown .panel-heading {
  min-height:59px;
  padding:17px 23px;
}

.secondary-label {
  font-size:12px;
  color:#697990;
}

#breakdown {
  display:grid;
  grid-template-columns:repeat(7,minmax(0,1fr));
}

.breakdown-field {
  display:flex;
  align-items:flex-start;
  flex-direction:column;
  gap:12px;
  border:0;
  border-right:1px solid #edf0f5;
  background:white;
  text-align:left;
  padding:21px 18px;
  color:#50627c;
  min-width:0;
}

.breakdown-field:last-child {
  border-right:0;
}

.breakdown-field:hover,.breakdown-field.active {
  background:#f8faff;
}

.breakdown-field>span {
  font-size:12px;
  color:#8895a9;
}

.breakdown-field code {
  font-size:21px;
  color:#50647e;
  max-width:100%;
  overflow-wrap:anywhere;
}

.breakdown-field.active code {
  color:var(--blue);
}

.breakdown-field small {
  font-size:12px;
  line-height:1.7;
  color:#697990;
}

footer {
  display:flex;
  justify-content:space-between;
  gap:20px;
  max-width:1240px;
  margin:auto;
  padding:8px 0 30px;
  font-size:12px;
  color:#697990;
  line-height:1.6;
}

.footer-dot {
  margin:0 12px;
}

@media(min-width:1440px) {
  main {
    padding-top:34px;
  }
  .page-heading {
    margin-bottom:24px;
  }
  .expression-line {
    padding-top:18px;
    padding-bottom:22px;
  }
}

@media(max-width:1304px) {
  main,footer {
    margin-left:32px;
    margin-right:32px;
  }
  .workspace {
    grid-template-columns:minmax(0,1fr) 295px;
    gap:20px;
  }
  .tabs {
    padding:0 10px;
  }
  .tabs button {
    padding-left:9px;
    padding-right:9px;
  }
}

@media(max-width:1080px) {
  .workspace {
    grid-template-columns:minmax(0,1fr) 265px;
    gap:18px;
  }
  .field-panel {
    padding:20px;
  }
  .tabs {
    flex-wrap:wrap;
    overflow:visible;
    padding:7px 14px;
    gap:2px;
  }
  .tabs button {
    min-height:38px;
    padding:8px 10px;
    border-radius:4px;
  }
  .tabs button[aria-selected=true] {
    background:#eef3ff;
    border-color:transparent;
  }
  .value-grid {
    grid-template-columns:repeat(8,minmax(0,1fr));
  }
  .named-grid {
    grid-template-columns:repeat(4,minmax(0,1fr));
  }
  .reference dl {
    grid-template-columns:1fr;
  }
  .reference dl div:last-child {
    grid-column:auto;
  }
  .breakdown-field {
    padding:18px 12px;
  }
  #expression {
    font-size:29px;
  }
}

@media(max-width:800px) {
  .site-header {
    padding:0 22px;
    height:72px;
  }
  .site-header nav {
    gap:15px;
    font-size:12px;
  }
  main {
    margin:0 22px;
    padding-top:30px;
  }
  .page-heading {
    align-items:flex-start;
  }
  .format-badge {
    margin-top:23px;
  }
  h1 {
    font-size:31px;
  }
  .workspace {
    grid-template-columns:1fr;
  }
  .side-panel {
    display:grid;
    grid-template-columns:1.1fr 1fr;
    gap:24px;
  }
  .reference {
    padding:16px 8px;
  }
  .reference dl {
    gap:16px;
  }
  .tabs {
    flex-wrap:nowrap;
    padding:0 14px;
    overflow:auto;
  }
  .tabs button {
    min-height:50px;
    font-size:14px;
  }
  .field-panel {
    min-height:350px;
  }
  .value-grid {
    grid-template-columns:repeat(10,minmax(0,1fr));
  }
  .named-grid {
    grid-template-columns:repeat(7,minmax(0,1fr));
  }
  .breakdown-field {
    padding:17px 12px;
  }
  .breakdown-field small {
    display:none;
  }
  .breakdown-field>span {
    font-size:12px;
  }
  .breakdown-field code {
    font-size:17px;
  }
  footer {
    margin:0 22px;
    font-size:12px;
  }
  .expression-line {
    align-items:flex-start;
    flex-direction:column;
    gap:16px;
  }
  .copy-button {
    align-self:flex-end;
    margin-top:-5px;
  }
  .expression-top {
    padding:21px 22px 0;
  }
  .expression-line {
    padding:12px 22px 21px;
  }
  .expression-bottom {
    padding:14px 22px;
  }
  .presets {
    align-items:flex-start;
  }
  .presets>span {
    padding-top:9px;
  }
}

@media(max-width:520px) {
  .site-header {
    padding:0 17px;
    height:66px;
  }
  .brand {
    font-size:15px;
    gap:9px;
  }
  .brand-mark {
    width:31px;
    height:31px;
    font-size:25px;
  }
  .brand-divider {
    margin:0 6px;
  }
  .site-header nav a:first-child {
    display:none;
  }
  .site-header nav {
    font-size:12px;
  }
  main {
    margin:0 16px;
    padding-top:28px;
  }
  .page-heading {
    margin-bottom:24px;
  }
  h1 {
    font-size:30px;
  }
  .intro {
    font-size:14px;
    line-height:1.6;
    max-width:260px;
  }
  .format-badge {
    display:none;
  }
  .expression-top {
    padding:18px 18px 0;
  }
  .expression-top h2 {
    font-size:14px;
  }
  .valid-status {
    font-size:12px;
  }
  .expression-line {
    padding:15px 18px 18px;
    gap:17px;
  }
  #expression {
    font-size:25px;
    letter-spacing:0;
  }
  .copy-button {
    font-size:14px;
    padding:8px 12px;
    min-height:36px;
  }
  .expression-bottom {
    padding:14px 18px;
  }
  .expression-bottom p {
    font-size:12px;
  }
  .presets {
    flex-direction:column;
    gap:8px;
    margin:16px 0 22px;
  }
  .presets>span {
    padding:0;
    font-size:12px;
  }
  #presets {
    gap:6px;
  }
  #presets button {
    font-size:14px;
    padding:6px 8px;
  }
  .panel-heading {
    padding:16px 18px;
    min-height:61px;
  }
  .tabs {
    flex-wrap:wrap;
    padding:7px 11px;
  }
  .tabs button {
    font-size:14px;
    min-height:38px;
    padding:9px;
  }
  .field-panel {
    padding:21px 17px;
  }
  .field-heading h3 {
    font-size:18px;
  }
  .field-heading p {
    font-size:14px;
  }
  .rule-label {
    font-size:14px;
    padding:12px;
    gap:9px;
  }
  .rule-controls {
    padding-left:33px;
    padding-right:12px;
  }
  .control-row {
    gap:10px;
  }
  .control-label {
    font-size:14px;
  }
  .control-unit {
    font-size:12px;
  }
  .control-label select {
    font-size:14px;
    min-width:72px;
    padding-left:9px;
  }
  .control-help {
    font-size:12px;
  }
  .value-grid {
    grid-template-columns:repeat(6,minmax(0,1fr));
    gap:5px;
  }
  .named-grid {
    grid-template-columns:repeat(3,minmax(0,1fr));
  }
  .year-grid {
    grid-template-columns:repeat(4,minmax(0,1fr));
  }
  .field-note {
    padding:14px 17px;
  }
  .field-note p {
    font-size:12px;
  }
  .side-panel {
    grid-template-columns:1fr;
    gap:0;
  }
  .reference {
    padding:23px 10px 4px;
  }
  .reference dl {
    grid-template-columns:1fr 1fr;
    gap:13px;
  }
  .reference dl div:last-child {
    grid-column:span 2;
  }
  .reference dd {
    font-size:12px;
  }
  .breakdown .panel-heading {
    padding:16px 18px;
  }
  .breakdown .panel-heading h2 {
    font-size:14px;
  }
  .secondary-label {
    display:none;
  }
  #breakdown {
    grid-template-columns:repeat(4,minmax(0,1fr));
  }
  .breakdown-field {
    gap:9px;
    border-bottom:1px solid #edf0f5;
  }
  .breakdown-field>span {
    font-size:12px;
  }
  .breakdown-field code {
    font-size:19px;
  }
  footer {
    flex-direction:column;
    gap:6px;
    margin:0 18px;
    padding:0 0 25px;
    font-size:12px;
  }
}

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

@media(max-width:620px) {
  .site-header {
    height:auto;
    min-height:68px;
    flex-wrap:wrap;
    gap:12px;
    padding:14px 17px;
  }
  .header-actions {
    width:100%;
    justify-content:space-between;
    gap:12px;
  }
  .site-header nav a:first-child {
    display:inline;
  }
}