:root {
  color-scheme: light;
  --bg: #f6f7fb;
  --surface: #fff;
  --surface2: #f1f3f8;
  --line: #dfe3ec;
  --text: #191b24;
  --muted: #697181;
  --purple: #7567df;
  --cyan: #2dbfc6;
  --green: #187d4a;
  --yellow: #946200;
  --orange: #aa4e17;
  --red: #bd3348;
  --unknown: #657083;
  --shadow: 0 18px 45px rgba(50, 55, 80, 0.07);
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  background:
    radial-gradient(
      circle at 14% -8%,
      rgba(117, 103, 223, 0.13),
      transparent 30rem
    ),
    radial-gradient(
      circle at 90% 8%,
      rgba(45, 191, 198, 0.1),
      transparent 28rem
    ),
    var(--bg);
  color: var(--text);
  font:
    15px/1.55 Inter,
    ui-sans-serif,
    system-ui,
    -apple-system,
    "Segoe UI",
    sans-serif;
}
a {
  color: inherit;
  text-decoration: none;
}
button {
  font: inherit;
}
.skip {
  position: fixed;
  top: -80px;
  left: 12px;
  z-index: 50;
  padding: 10px 14px;
  border-radius: 9px;
  background: var(--text);
  color: #fff;
}
.skip:focus {
  top: 12px;
}
:focus-visible {
  outline: 3px solid var(--purple);
  outline-offset: 3px;
}
.nav {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  min-height: 68px;
  padding: 0 max(24px, calc((100vw - 1160px) / 2));
  border-bottom: 1px solid var(--line);
  background: rgba(246, 247, 251, 0.9);
  backdrop-filter: blur(18px);
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
}
.brand img {
  width: 36px;
  height: 36px;
}
.brand span,
.brand strong,
.brand small {
  display: block;
}
.brand strong {
  font-size: 17px;
}
.brand small {
  color: var(--muted);
  font-size: 9px;
  font-weight: 750;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}
.nav nav {
  display: flex;
  gap: 22px;
  margin-left: auto;
}
.nav nav a {
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}
.nav nav a:hover,
.nav nav a.active {
  color: var(--text);
}
.wrap {
  width: min(1160px, calc(100% - 40px));
  margin: auto;
}
.overview {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 440px;
  align-items: center;
  gap: 55px;
  padding: 54px 0 34px;
}
.eyebrow {
  margin: 0;
  color: var(--purple);
  font-size: 10px;
  font-weight: 850;
  letter-spacing: 0.18em;
}
.overview h1 {
  margin: 8px 0 12px;
  font-size: clamp(34px, 5vw, 54px);
  line-height: 1;
  letter-spacing: -0.055em;
}
.intro {
  max-width: 680px;
  margin: 0;
  color: var(--muted);
  font-size: 16px;
}
.summary {
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.9);
  box-shadow: var(--shadow);
}
.summary-state {
  display: flex;
  align-items: center;
  gap: 13px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}
.state-icon,
.state-symbol {
  display: grid;
  place-items: center;
  width: 24px;
  height: 24px;
  flex: 0 0 auto;
  border: 1px solid currentColor;
  border-radius: 50%;
  font-size: 12px;
  font-weight: 900;
}
.summary-state small,
.summary-state strong {
  display: block;
}
.summary-state small,
.summary dt {
  color: var(--muted);
  font-size: 10px;
}
.summary-state strong {
  font-size: 18px;
}
.summary dl {
  display: grid;
  grid-template-columns: 1.25fr 1.25fr 1fr;
  gap: 10px;
  margin: 16px 0 0;
}
.summary dt,
.summary dd {
  margin: 0;
}
.summary dd {
  margin-top: 3px;
  font-size: 12px;
  font-weight: 750;
}
.summary.operational .state-icon,
.badge.operational,
.service-row.operational .state-symbol {
  color: var(--green);
}
.summary.degraded .state-icon,
.badge.degraded,
.service-row.degraded .state-symbol {
  color: var(--yellow);
}
.summary.partial_outage .state-icon,
.badge.partial_outage,
.service-row.partial_outage .state-symbol {
  color: var(--orange);
}
.summary.outage .state-icon,
.badge.outage,
.service-row.outage .state-symbol {
  color: var(--red);
}
.summary.maintenance .state-icon,
.badge.maintenance,
.service-row.maintenance .state-symbol {
  color: var(--purple);
}
.summary.unknown .state-icon,
.badge.unknown,
.service-row.unknown .state-symbol {
  color: var(--unknown);
}
.section,
.attention-section {
  padding: 24px 0 38px;
}
.section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 14px;
}
.section-head h2,
.method h2 {
  margin: 4px 0 0;
  font-size: 28px;
  letter-spacing: -0.04em;
}
.freshness {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
}
.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 15px;
  margin: 0 0 13px;
  color: var(--muted);
  font-size: 11px;
}
.service-groups {
  display: grid;
  gap: 14px;
}
.service-group {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.84);
}
.service-group > h3 {
  display: flex;
  justify-content: space-between;
  margin: 0;
  padding: 11px 18px;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.service-group > h3 span {
  font-weight: 500;
}
.service-row {
  border-bottom: 1px solid var(--line);
}
.service-row:last-child {
  border-bottom: 0;
}
.service-row summary {
  display: grid;
  grid-template-columns: 200px minmax(150px, 1fr) 125px 132px 108px;
  align-items: center;
  gap: 15px;
  min-height: 76px;
  padding: 13px 18px;
  cursor: pointer;
  list-style: none;
}
.service-row summary::-webkit-details-marker {
  display: none;
}
.service-row summary:hover {
  background: rgba(117, 103, 223, 0.035);
}
.service-title {
  display: flex;
  align-items: center;
  gap: 11px;
}
.service-title strong,
.service-title small {
  display: block;
}
.service-title small {
  color: var(--muted);
  font-size: 10px;
}
.history {
  display: grid;
  grid-template-columns: repeat(30, 1fr);
  gap: 2px;
  height: 24px;
}
.history i {
  min-width: 2px;
  border-radius: 2px;
  background: var(--unknown);
  opacity: 0.24;
}
.history i.operational {
  background: var(--green);
  opacity: 0.8;
}
.history i.degraded {
  background: var(--yellow);
  opacity: 0.85;
}
.history i.outage {
  background: var(--red);
  opacity: 0.9;
}
.history-empty {
  grid-column: 1/-1;
  align-self: center;
  color: var(--muted);
  font-size: 10px;
}
.metric strong,
.metric small {
  display: block;
}
.metric strong {
  font-variant-numeric: tabular-nums;
}
.metric small {
  color: var(--muted);
  font-size: 10px;
}
.badge {
  justify-self: end;
  padding: 5px 8px;
  border: 1px solid currentColor;
  border-radius: 12px;
  font-size: 10px;
  font-weight: 800;
  white-space: nowrap;
}
.badge small {
  display: block;
  margin-top: 1px;
  color: var(--muted);
  font-size: 8px;
  font-weight: 650;
  text-align: center;
}
.service-detail {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 18px;
  padding: 17px 54px 19px;
  border-top: 1px dashed var(--line);
  background: var(--surface2);
}
.service-detail h4 {
  margin: 0 0 4px;
}
.service-detail p {
  margin: 0;
  color: var(--muted);
}
.service-detail dl {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin: 0;
}
.service-detail dt {
  color: var(--muted);
  font-size: 10px;
}
.service-detail dd {
  margin: 2px 0 0;
  font-size: 12px;
  font-weight: 700;
}
.row-actions {
  grid-column: 1/-1;
  display: flex;
  gap: 10px;
}
.row-actions a,
.section-links a {
  color: var(--purple);
  font-weight: 750;
}
.maintenance-note {
  grid-column: 1/-1;
}
.attention {
  display: grid;
  gap: 10px;
}
.notice {
  padding: 18px;
  border: 1px solid var(--line);
  border-left: 4px solid var(--yellow);
  border-radius: 14px;
  background: var(--surface);
}
.notice.outage {
  border-left-color: var(--red);
}
.notice.partial_outage {
  border-left-color: var(--orange);
}
.notice.maintenance {
  border-left-color: var(--purple);
}
.notice h3 {
  margin: 8px 0 12px;
}
.notice dl {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1.4fr 1.2fr 1fr;
  gap: 14px;
  margin: 0;
}
.notice dt {
  color: var(--muted);
  font-size: 10px;
}
.notice dd {
  margin: 3px 0 0;
  font-size: 12px;
}
.section-links {
  display: flex;
  gap: 16px;
  font-size: 12px;
}
.incidents {
  display: grid;
  gap: 9px;
}
.incident {
  display: flex;
  gap: 14px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface);
}
.incident h3 {
  margin: 2px 0 4px;
  font-size: 16px;
}
.incident p {
  margin: 0;
  color: var(--muted);
}
.incident-time {
  font-size: 10px;
}
.incident.resolved .state-symbol {
  color: var(--green);
}
.method {
  display: grid;
  grid-template-columns: 230px 1fr;
  gap: 36px;
  margin: 40px 0 70px;
  padding: 25px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: linear-gradient(
    135deg,
    rgba(117, 103, 223, 0.06),
    rgba(45, 191, 198, 0.04)
  );
}
.method-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.method article h3 {
  margin: 0 0 5px;
  font-size: 14px;
}
.method article p {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
}
.error {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--surface);
}
.error p {
  color: var(--muted);
}
.error button {
  min-height: 44px;
  padding: 0 16px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--surface2);
  color: var(--text);
  cursor: pointer;
}
.skeleton {
  height: 145px;
  border-radius: 16px;
  background: linear-gradient(90deg, #eceef4, #f7f8fb, #eceef4);
  background-size: 200% 100%;
  animation: pulse 1.4s infinite;
}
@keyframes pulse {
  to {
    background-position: -200% 0;
  }
}
footer {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 24px;
  min-height: 76px;
  padding: 20px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 11px;
}
@media (max-width: 900px) {
  .overview {
    grid-template-columns: 1fr;
    gap: 22px;
    padding-top: 36px;
  }
  .summary {
    width: 100%;
  }
  .service-row summary {
    grid-template-columns: 1fr auto;
  }
  .history {
    grid-column: 1/-1;
    grid-row: 2;
  }
  .metric {
    grid-row: 3;
  }
  .badge {
    grid-column: 2;
    grid-row: 1;
  }
  .service-detail {
    grid-template-columns: 1fr;
    padding: 17px;
  }
  .service-detail dl {
    grid-template-columns: 1fr 1fr;
  }
  .notice dl {
    grid-template-columns: 1fr 1fr;
  }
  .method {
    grid-template-columns: 1fr;
  }
  .method-grid {
    grid-template-columns: 1fr;
  }
  .row-actions {
    grid-column: 1;
  }
  .section-head {
    align-items: flex-start;
    flex-direction: column;
    gap: 7px;
  }
}
@media (max-width: 560px) {
  .nav {
    padding: 0 14px;
  }
  .nav nav {
    gap: 13px;
  }
  .nav nav a:first-child {
    display: none;
  }
  .wrap {
    width: min(100% - 24px, 1160px);
  }
  .overview {
    padding: 26px 0 16px;
  }
  .overview h1 {
    font-size: 36px;
  }
  .intro {
    font-size: 14px;
  }
  .summary dl {
    grid-template-columns: 1fr 1fr;
  }
  .summary dl div:last-child {
    grid-column: 1/-1;
  }
  .legend {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }
  .service-row summary {
    padding: 13px;
  }
  .metric:nth-of-type(2) {
    justify-self: end;
  }
  .service-detail dl,
  .notice dl {
    grid-template-columns: 1fr;
  }
  .section-links {
    flex-wrap: wrap;
  }
  .method {
    margin-bottom: 45px;
    padding: 19px;
  }
  footer {
    flex-wrap: wrap;
    gap: 10px 18px;
  }
}
@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --bg: #0a0b12;
    --surface: #11131c;
    --surface2: #171a25;
    --line: #292d3b;
    --text: #f3f4f8;
    --muted: #9ba3b2;
    --purple: #a99cff;
    --cyan: #6edce0;
    --green: #67d797;
    --yellow: #e9bd62;
    --orange: #f29855;
    --red: #ff7d8d;
    --unknown: #a4adbd;
    --shadow: none;
  }
  body {
    background:
      radial-gradient(
        circle at 14% -8%,
        rgba(117, 103, 223, 0.14),
        transparent 30rem
      ),
      var(--bg);
  }
  .nav {
    background: rgba(10, 11, 18, 0.9);
  }
  .summary,
  .service-group {
    background: rgba(17, 19, 28, 0.88);
  }
  .skeleton {
    background: linear-gradient(90deg, #11131c, #191c28, #11131c);
    background-size: 200% 100%;
  }
}
@media (prefers-reduced-motion: reduce) {
  * {
    scroll-behavior: auto !important;
    transition: none !important;
  }
  .skeleton {
    animation: none;
  }
}

/* V2.1 information-density and history interaction */
.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;
}
.overview {
  grid-template-columns: minmax(0, 1fr) minmax(410px, 500px);
  gap: 32px;
  padding: 34px 0 18px;
}
.overview h1 {
  margin: 5px 0 7px;
  font-size: clamp(30px, 4vw, 42px);
}
.intro {
  font-size: 14px;
}
.summary {
  padding: 15px 17px;
}
.summary-state {
  padding-bottom: 10px;
}
.summary-line {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-top: 9px;
  color: var(--muted);
  font-size: 11px;
}
.summary-line > span strong {
  color: var(--text);
}
.summary-line details {
  position: relative;
}
.summary-line summary {
  color: var(--purple);
  cursor: pointer;
  font-weight: 750;
}
.summary-line dl {
  position: absolute;
  z-index: 8;
  right: 0;
  width: 310px;
  margin: 8px 0 0;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface);
  box-shadow: var(--shadow);
}
.summary-line dl div {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 8px;
}
.section,
.attention-section {
  padding: 15px 0 22px;
}
.section-head {
  margin-bottom: 9px;
}
.section-head h2,
.method h2 {
  font-size: 23px;
}
.service-groups {
  gap: 10px;
}
.service-group {
  border-radius: 13px;
}
.service-group > h3 {
  padding: 7px 14px;
}
.service-row summary {
  grid-template-columns: 180px minmax(150px, 1fr) 120px 128px 116px;
  gap: 12px;
  min-height: 68px;
  padding: 10px 14px;
}
.history-block {
  min-width: 0;
}
.history {
  height: 19px;
}
.history-cell {
  min-width: 3px;
  padding: 0;
  border: 0;
  border-radius: 2px;
  background: var(--unknown);
  opacity: 0.25;
  cursor: pointer;
}
.history-cell.operational {
  background: var(--green);
  opacity: 0.8;
}
.history-cell.degraded {
  background: var(--yellow);
  opacity: 0.9;
}
.history-cell.outage {
  background: var(--red);
  opacity: 0.9;
}
.history-cell.maintenance {
  background: var(--purple);
  opacity: 0.9;
}
.history-cell:hover,
.history-cell:focus-visible {
  opacity: 1;
  transform: scaleY(1.25);
  outline: 2px solid currentColor;
  outline-offset: 1px;
}
.history-axis {
  display: flex;
  justify-content: space-between;
  gap: 6px;
  margin-top: 3px;
  color: var(--muted);
  font-size: 8px;
  line-height: 1.1;
}
.history-readout {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  text-align: center;
}
.row-state {
  display: grid;
  justify-items: end;
  gap: 3px;
}
.badge small {
  display: none;
}
.details-action {
  color: var(--purple);
  font-size: 10px;
  font-weight: 750;
}
.service-row[open] .details-action {
  font-size: 0;
}
.service-row[open] .details-action::after {
  content: "收起⌃";
  font-size: 10px;
}
.coverage {
  margin-top: 8px !important;
  font-size: 11px;
}
.mobile-history {
  display: none;
}
.method {
  margin: 28px 0 50px;
  padding: 20px;
}
.method .legend {
  margin-bottom: 14px;
}

@media (max-width: 900px) {
  .overview {
    grid-template-columns: 1fr;
    gap: 12px;
    padding-top: 22px;
  }
  .service-row summary {
    grid-template-columns: 1fr auto;
  }
  .history-block {
    grid-column: 1/-1;
    grid-row: 2;
  }
  .metric {
    grid-row: 3;
  }
  .row-state {
    grid-column: 2;
    grid-row: 1;
  }
}

@media (max-width: 560px) {
  .nav {
    min-height: 56px;
  }
  .brand img {
    width: 32px;
    height: 32px;
  }
  .nav nav {
    gap: 11px;
  }
  .overview {
    gap: 9px;
    padding: 14px 0 8px;
  }
  .overview h1 {
    font-size: 27px;
  }
  .intro {
    font-size: 12px;
    line-height: 1.4;
  }
  .summary {
    padding: 11px 12px;
    border-radius: 13px;
  }
  .summary-state {
    gap: 9px;
    padding-bottom: 7px;
  }
  .summary-state strong {
    font-size: 16px;
  }
  .summary-line {
    padding-top: 6px;
    font-size: 10px;
  }
  .summary-line dl {
    width: min(310px, calc(100vw - 40px));
  }
  .section,
  .attention-section {
    padding: 8px 0 14px;
  }
  .section-head {
    flex-direction: row;
    align-items: end;
    margin-bottom: 7px;
  }
  .section-head h2 {
    font-size: 20px;
  }
  .freshness {
    max-width: 180px;
    text-align: right;
    font-size: 9px;
  }
  .service-groups {
    gap: 7px;
  }
  .service-group > h3 {
    padding: 5px 10px;
    font-size: 9px;
  }
  .service-row summary {
    gap: 7px;
    min-height: 54px;
    padding: 7px 9px;
  }
  .service-title {
    gap: 7px;
  }
  .service-title strong {
    font-size: 13px;
  }
  .service-title small {
    font-size: 8px;
  }
  .state-symbol {
    width: 20px;
    height: 20px;
    font-size: 10px;
  }
  .badge {
    padding: 3px 6px;
    font-size: 9px;
  }
  .details-action {
    font-size: 9px;
  }
  .history-block {
    display: none;
  }
  .metric {
    display: none;
  }
  .service-detail {
    padding: 12px;
    font-size: 12px;
  }
  .mobile-history {
    display: block;
    grid-column: 1;
    min-width: 0;
  }
  .mobile-history h4 {
    margin-bottom: 7px;
  }
  .mobile-history .history {
    display: flex;
    height: 40px;
    gap: 5px;
    overflow-x: auto;
    padding: 2px;
    scroll-snap-type: x proximity;
  }
  .mobile-history .history-cell {
    flex: 0 0 36px;
    min-width: 36px;
    min-height: 36px;
    scroll-snap-align: start;
  }
  .mobile-history .history-axis {
    font-size: 9px;
  }
  .row-actions a {
    display: inline-flex;
    align-items: center;
    min-height: 42px;
    padding: 0 9px;
    border: 1px solid var(--line);
    border-radius: 9px;
  }
  .method {
    margin: 20px 0 35px;
    padding: 15px;
  }
  .legend {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }
}

/* Probe popup must not inherit the overview's generic dl grid. */
.summary-line dl { display:block; width:min(310px,calc(100vw - 40px)); }
.summary-line dl div { grid-template-columns:72px minmax(0,1fr); }
.summary-line dl dd { min-width:0; margin:0; overflow-wrap:anywhere; }
@media(max-width:600px){.summary-line dl div{grid-template-columns:minmax(0,1fr);gap:3px;margin-bottom:8px}}