:root {
  --silk: #f3efe2;
  --silk-deep: #e8e0ce;
  --silk-light: rgba(255, 253, 246, 0.82);
  --scroll-ink: #26342e;
  --scroll-muted: #68746c;
  --cinnabar: #a43e32;
  --cinnabar-deep: #7f2e26;
  --season-main: #627d70;
  --season-deep: #36584d;
  --season-soft: #dfe5dc;
  --season-pale: rgba(98, 125, 112, 0.10);
  --season-glow: rgba(98, 125, 112, 0.16);
  --paper-line: rgba(73, 72, 57, 0.13);
  --paper-line-strong: rgba(73, 72, 57, 0.23);
  --paper-shadow: 0 22px 58px rgba(74, 67, 50, 0.11);
  --paper-shadow-small: 0 8px 24px rgba(74, 67, 50, 0.08);
  --font-calligraphy: "Kaiti SC", STKaiti, KaiTi, "Songti SC", serif;
  --font-modern: -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC", "Helvetica Neue", sans-serif;
}

body[data-season="neutral"] {
  --season-main: #627d70;
  --season-deep: #36584d;
  --season-soft: #dfe5dc;
  --season-pale: rgba(98, 125, 112, 0.10);
  --season-glow: rgba(98, 125, 112, 0.16);
}

body[data-season="spring"] {
  --season-main: #6f9677;
  --season-deep: #345b48;
  --season-soft: #dce8d7;
  --season-pale: rgba(111, 150, 119, 0.12);
  --season-glow: rgba(111, 150, 119, 0.20);
}

body[data-season="summer"] {
  --season-main: #3f8874;
  --season-deep: #1f5f54;
  --season-soft: #d3e7db;
  --season-pale: rgba(63, 136, 116, 0.12);
  --season-glow: rgba(63, 136, 116, 0.20);
}

body[data-season="autumn"] {
  --season-main: #a57946;
  --season-deep: #70502f;
  --season-soft: #eadfc9;
  --season-pale: rgba(165, 121, 70, 0.12);
  --season-glow: rgba(165, 121, 70, 0.19);
}

body[data-season="winter"] {
  --season-main: #5a8390;
  --season-deep: #365b68;
  --season-soft: #d9e5e7;
  --season-pale: rgba(90, 131, 144, 0.12);
  --season-glow: rgba(90, 131, 144, 0.19);
}

html {
  background: var(--silk);
}

body.aurora-learning-theme {
  --ios-canvas: var(--silk);
  --ios-glass: #faf7ee;
  --ios-ink: var(--scroll-ink);
  --ios-muted: var(--scroll-muted);
  --ios-blue: var(--season-main);
  --ios-mint: #5d8f79;
  --ios-line: var(--paper-line);
  --ios-line-strong: var(--paper-line-strong);
  --ios-surface: rgba(251, 248, 238, 0.72);
  --ios-surface-strong: rgba(255, 253, 247, 0.88);
  --ios-shadow: var(--paper-shadow);
  --ios-shadow-small: var(--paper-shadow-small);
  color: var(--scroll-ink);
  background:
    radial-gradient(circle at 9% 5%, var(--season-glow) 0, transparent 24rem),
    radial-gradient(circle at 92% 14%, rgba(164, 62, 50, 0.07) 0, transparent 20rem),
    repeating-linear-gradient(0deg, rgba(99, 87, 61, 0.017) 0, rgba(99, 87, 61, 0.017) 1px, transparent 1px, transparent 5px),
    linear-gradient(150deg, #f7f3e8 0%, var(--silk) 52%, #ebe4d5 100%);
  font-family: var(--font-modern);
  isolation: isolate;
  transition: background-color 420ms ease, color 260ms ease;
}

.page-atmosphere {
  position: fixed;
  inset: 0;
  z-index: 0;
  display: block !important;
  overflow: hidden;
  pointer-events: none;
}

.page-atmosphere::before,
.page-atmosphere::after {
  position: absolute;
  display: block;
  content: "";
  pointer-events: none;
}

.page-atmosphere::before {
  inset: -3.5vw -5vw -4vw;
  background: url("assets/kuaixue-shiqing-tie.webp") 52% 8% / cover no-repeat;
  filter: blur(1.2px) sepia(0.12) saturate(0.72) contrast(0.94);
  mix-blend-mode: multiply;
  opacity: 0.30;
  transform: scale(1.035);
  transform-origin: center top;
}

.page-atmosphere::after {
  inset: 0;
  background:
    radial-gradient(circle at 12% 4%, color-mix(in srgb, var(--season-soft) 34%, transparent), transparent 35rem),
    linear-gradient(180deg, rgba(247, 243, 232, 0.06) 0%, rgba(247, 243, 232, 0.22) 48%, rgba(239, 233, 217, 0.52) 100%);
}

.aurora-learning-theme :is(.masthead, main, footer) {
  position: relative;
  z-index: 1;
}

.season-orbit {
  display: none;
}

.aurora-learning-theme .masthead {
  grid-template-columns: minmax(280px, 0.82fr) minmax(210px, 0.48fr) minmax(480px, 1.2fr);
  gap: 22px;
  margin-top: 18px;
  padding: 20px 24px;
  overflow: hidden;
  border: 1px solid rgba(93, 77, 51, 0.18);
  border-radius: 10px 26px 26px 10px;
  background:
    linear-gradient(90deg, rgba(106, 138, 113, 0.13), transparent 22%, transparent 79%, rgba(164, 62, 50, 0.045)),
    rgba(248, 244, 233, 0.32);
  box-shadow: 0 18px 45px rgba(77, 68, 49, 0.12), inset 0 1px rgba(255, 255, 255, 0.78);
  backdrop-filter: saturate(104%) blur(3px);
  -webkit-backdrop-filter: saturate(104%) blur(3px);
}

.aurora-learning-theme .masthead::before,
.aurora-learning-theme .masthead::after {
  position: absolute;
  top: 0;
  bottom: 0;
  display: block !important;
  width: 9px;
  content: "" !important;
  opacity: 1;
}

.aurora-learning-theme .masthead::before {
  left: 0;
  background: linear-gradient(90deg, rgba(70, 57, 37, 0.22), rgba(255, 255, 255, 0.1));
  box-shadow: inset -1px 0 rgba(75, 62, 39, 0.13);
}

.aurora-learning-theme .masthead::after {
  right: 0;
  background: linear-gradient(90deg, rgba(255, 255, 255, 0.12), rgba(70, 57, 37, 0.16));
  box-shadow: inset 1px 0 rgba(75, 62, 39, 0.10);
}

.aurora-learning-theme .brand-block {
  gap: 15px;
}

.aurora-learning-theme .season-seal {
  position: relative;
  flex-basis: 54px;
  width: 54px;
  height: 54px;
  border: 1px solid rgba(102, 33, 27, 0.48);
  border-radius: 4px;
  color: #fff9ed;
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.09), transparent 38%),
    var(--cinnabar);
  box-shadow: 0 7px 18px rgba(127, 46, 38, 0.20), inset 0 0 0 3px rgba(255, 245, 224, 0.10);
  font: 600 12px/1.12 var(--font-calligraphy);
  letter-spacing: 0.10em;
  transform: rotate(-1.5deg);
}

.aurora-learning-theme .eyebrow,
.aurora-learning-theme .section-kicker {
  color: var(--season-deep);
  font-family: var(--font-modern);
  font-size: 10px;
  font-weight: 720;
  letter-spacing: 0.12em;
  text-transform: none;
}

.aurora-learning-theme h1 {
  margin-top: 2px;
  color: var(--scroll-ink);
  font-family: var(--font-calligraphy);
  font-size: clamp(28px, 2.5vw, 40px);
  font-weight: 560;
  letter-spacing: 0.045em;
}

.aurora-learning-theme h1 span {
  color: var(--scroll-muted);
  font-family: var(--font-modern);
  font-size: 13px;
  font-weight: 560;
  letter-spacing: 0.08em;
}

.aurora-learning-theme .brand-note {
  margin-top: 3px;
  color: var(--scroll-muted);
  font-size: 11px;
  letter-spacing: 0.14em;
}

.masthead-season {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  gap: 11px;
  align-items: center;
  min-width: 0;
  padding: 9px 11px;
  border: 1px solid color-mix(in srgb, var(--season-main) 28%, transparent);
  border-radius: 18px;
  background: color-mix(in srgb, var(--season-soft) 62%, rgba(255, 253, 246, 0.78));
  box-shadow: inset 0 1px rgba(255, 255, 255, 0.64);
  transition: border-color 300ms ease, background-color 300ms ease;
}

.masthead-season-motif {
  width: 52px;
  height: 52px;
  padding: 6px;
  color: var(--season-deep);
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  opacity: 0.9;
}

.masthead-season > div {
  min-width: 0;
}

.masthead-season span {
  display: block;
  color: var(--season-deep);
  font-size: 9px;
  font-weight: 720;
  letter-spacing: 0.22em;
}

.masthead-season strong {
  display: block;
  margin-top: 1px;
  overflow: hidden;
  color: var(--season-deep);
  font: 560 22px/1.15 var(--font-calligraphy);
  letter-spacing: 0.11em;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.masthead-season p {
  margin: 3px 0 0;
  overflow: hidden;
  color: var(--scroll-muted);
  font-size: 9px;
  line-height: 1.35;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.aurora-learning-theme .connection-bar {
  gap: 11px;
}

.aurora-learning-theme .status-pill,
.aurora-learning-theme .frame-time {
  border-color: var(--paper-line);
  color: var(--scroll-muted);
  background: rgba(255, 253, 246, 0.62);
}

.aurora-learning-theme .status-pill[data-state="connected"],
.aurora-learning-theme .status-pill[data-state="real"] {
  border-color: rgba(54, 103, 77, 0.24);
  color: #285841;
  background: rgba(215, 232, 217, 0.78);
}

.aurora-learning-theme .status-pill[data-state="error"] {
  border-color: rgba(164, 62, 50, 0.28);
  color: var(--cinnabar-deep);
  background: rgba(246, 224, 216, 0.82);
}

.aurora-learning-theme .button,
.aurora-learning-theme button,
.aurora-learning-theme select,
.aurora-learning-theme input {
  font-family: var(--font-modern);
}

.aurora-learning-theme .button-primary,
.aurora-learning-theme button[data-command-kind="mode"]:not(:disabled),
.aurora-learning-theme [data-dynamic-apply]:not(:disabled),
.aurora-learning-theme [data-threshold-apply]:not(:disabled) {
  border-color: var(--season-deep);
  color: #fffdf5;
  background: var(--season-deep);
  box-shadow: 0 7px 16px var(--season-glow);
}

.aurora-learning-theme .button-primary:hover:not(:disabled),
.aurora-learning-theme button[data-command-kind="mode"]:hover:not(:disabled) {
  background: color-mix(in srgb, var(--season-deep) 88%, #17271f);
}

.aurora-learning-theme .button-secondary,
.aurora-learning-theme .button-quiet,
.aurora-learning-theme .button-studio,
.aurora-learning-theme .text-button {
  border-color: var(--paper-line-strong);
  color: var(--scroll-ink);
  background: rgba(255, 253, 246, 0.52);
  box-shadow: inset 0 1px rgba(255, 255, 255, 0.7);
}

.aurora-learning-theme main {
  padding-top: 18px;
}

.aurora-learning-theme .panel,
.adaptive-overview-main,
.adaptive-control-hub,
.dynamic-panel,
.history-panel {
  border: 1px solid var(--paper-line);
  background: linear-gradient(150deg, rgba(255, 254, 248, 0.26), rgba(246, 241, 229, 0.14));
  box-shadow: var(--paper-shadow-small), inset 0 1px rgba(255, 255, 255, 0.78);
  backdrop-filter: saturate(102%) blur(2px);
  -webkit-backdrop-filter: saturate(102%) blur(2px);
}

.aurora-learning-theme .panel::before,
.aurora-learning-theme .panel::after,
.aurora-learning-theme .data-panel::before,
.aurora-learning-theme .data-panel::after,
.aurora-learning-theme .voice-panel::after {
  display: none !important;
  content: none !important;
}

.adaptive-overview-heading h2,
.adaptive-control-hub h2,
.aurora-learning-theme .section-heading h2,
.aurora-learning-theme .season-card h2,
.aurora-learning-theme .voice-guide-heading h3 {
  color: var(--scroll-ink);
  font-family: var(--font-calligraphy);
  font-weight: 560;
  letter-spacing: 0.035em;
}

.adaptive-overview-heading h2,
.aurora-learning-theme .section-heading h2 {
  position: relative;
  display: inline-block;
  padding-right: 18px;
}

.adaptive-overview-heading h2::after,
.aurora-learning-theme .section-heading h2::after {
  position: absolute;
  top: 52%;
  right: 0;
  width: 10px;
  height: 10px;
  border: 1px solid rgba(127, 46, 38, 0.55);
  border-radius: 1px;
  content: "";
  background: rgba(164, 62, 50, 0.12);
  transform: translateY(-50%) rotate(2deg);
}

.aurora-learning-theme .alert-notice {
  border-color: rgba(94, 90, 74, 0.17);
  background: rgba(250, 247, 238, 0.38);
}

.aurora-learning-theme .alert-notice.is-safe {
  border-color: rgba(54, 103, 77, 0.25);
  background: rgba(229, 239, 226, 0.48);
}

.aurora-learning-theme .alert-notice.is-danger {
  border-color: rgba(164, 62, 50, 0.42);
  background: rgba(249, 229, 220, 0.91);
  box-shadow: 0 15px 38px rgba(127, 46, 38, 0.15);
}

.aurora-learning-theme .alert-notice.is-danger :is(h2, .section-kicker, .alert-symbol) {
  color: var(--cinnabar-deep);
}

.aurora-learning-theme .alert-symbol {
  border-radius: 4px;
  color: var(--season-deep);
  background: var(--season-soft);
  font-family: var(--font-calligraphy);
}

.aurora-learning-theme .alert-notice.is-danger .alert-symbol {
  color: #fff8ed;
  background: var(--cinnabar);
}

.adaptive-metric-grid article,
.adaptive-channel-grid button,
.aurora-learning-theme .metric,
.aurora-learning-theme .room,
.aurora-learning-theme .dynamic-slot-card,
.aurora-learning-theme .threshold-card,
.aurora-learning-theme .device-card,
.aurora-learning-theme .actuator-test-card,
.aurora-learning-theme .voice-action-card,
.aurora-learning-theme .voice-text-card,
.aurora-learning-theme .voice-guide,
.aurora-learning-theme .history-chart-wrap,
.aurora-learning-theme .telemetry-output {
  border-color: var(--paper-line);
  background: rgba(255, 253, 246, 0.40);
  box-shadow: inset 0 1px rgba(255, 255, 255, 0.76);
}

.adaptive-metric-grid article::before,
.aurora-learning-theme .metric::before {
  background: var(--season-main);
}

.adaptive-metric-grid strong,
.aurora-learning-theme .metric strong,
.aurora-learning-theme .device-card strong,
.aurora-learning-theme .dynamic-reading strong {
  color: var(--scroll-ink);
  font-family: var(--font-data);
  font-variant-numeric: tabular-nums;
}

.aurora-learning-theme .metric-code,
.aurora-learning-theme .room-icon,
.aurora-learning-theme .live-dot.is-live,
.adaptive-live-state.is-live {
  color: var(--season-deep);
  background: var(--season-soft);
}

.aurora-learning-theme .room.is-mode-active {
  border-color: color-mix(in srgb, var(--season-main) 48%, transparent);
  background: color-mix(in srgb, var(--season-soft) 30%, rgba(255, 253, 246, 0.38));
}

.aurora-learning-theme .room.is-alert {
  border-color: rgba(164, 62, 50, 0.48);
  background: rgba(249, 226, 216, 0.91);
}

.aurora-learning-theme .house-heart {
  border-color: color-mix(in srgb, var(--season-main) 38%, transparent);
  color: var(--season-deep);
  background: var(--season-soft);
  box-shadow: 0 12px 30px var(--season-glow);
}

.aurora-learning-theme .airflow-path {
  stroke: var(--season-main);
  opacity: 0.34;
}

.aurora-learning-theme .mode-badge,
.adaptive-live-state,
.aurora-learning-theme .control-lock,
.aurora-learning-theme .voice-support {
  border-color: color-mix(in srgb, var(--season-main) 26%, transparent);
  color: var(--season-deep);
  background: var(--season-pale);
}

.aurora-learning-theme .adaptive-tabs {
  border: 1px solid var(--paper-line);
  background: rgba(242, 237, 224, 0.30);
  box-shadow: 0 10px 28px rgba(75, 67, 50, 0.09);
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
}

.aurora-learning-theme .adaptive-tabs button {
  color: var(--scroll-muted);
  background: transparent;
}

.aurora-learning-theme .adaptive-tabs button.is-active {
  color: #fffdf5;
  background: var(--season-deep);
  box-shadow: 0 7px 17px var(--season-glow);
}

.aurora-learning-theme .season-card {
  position: relative;
  overflow: hidden;
  border-color: color-mix(in srgb, var(--season-main) 28%, var(--paper-line));
  background:
    radial-gradient(circle at 96% 8%, var(--season-glow), transparent 10rem),
    linear-gradient(145deg, rgba(255, 253, 246, 0.34), color-mix(in srgb, var(--season-soft) 24%, rgba(247, 242, 229, 0.22)));
}

.aurora-learning-theme .season-name {
  border: 1px solid color-mix(in srgb, var(--season-main) 38%, transparent);
  border-radius: 3px;
  color: var(--season-deep);
  background: color-mix(in srgb, var(--season-soft) 70%, rgba(255, 253, 246, 0.8));
  font-family: var(--font-calligraphy);
  font-weight: 560;
  letter-spacing: 0.05em;
}

.aurora-learning-theme .season-phenology {
  margin: 4px 0 6px;
  color: var(--season-deep);
  font-family: var(--font-calligraphy);
  font-size: 13px;
  letter-spacing: 0.06em;
}

.aurora-learning-theme .strategy-grid > div {
  border-color: var(--paper-line);
  background: rgba(255, 253, 246, 0.34);
}

.aurora-learning-theme .dynamic-panel {
  border-left: 3px solid var(--season-main);
}

.aurora-learning-theme .dynamic-slot-grid {
  grid-template-columns: 1fr;
}

.aurora-learning-theme .overview-column {
  align-items: start;
}

.aurora-learning-theme .dynamic-slot-card header b,
.aurora-learning-theme .threshold-card [data-threshold-conclusion] {
  color: var(--season-deep);
}

.aurora-learning-theme :is(select, input[type="text"], input[type="number"]) {
  border-color: var(--paper-line-strong);
  color: var(--scroll-ink);
  background: rgba(255, 254, 249, 0.86);
}

.aurora-learning-theme :is(select, input, button, a):focus-visible {
  outline: 3px solid color-mix(in srgb, var(--season-main) 31%, transparent);
  outline-offset: 2px;
}

.aurora-learning-theme input[type="range"] {
  accent-color: var(--season-deep);
}

.aurora-learning-theme .voice-orb {
  color: #fffdf5;
  background: var(--season-deep);
  box-shadow: 0 9px 22px var(--season-glow);
}

.aurora-learning-theme .voice-phrase {
  border-color: color-mix(in srgb, var(--season-main) 22%, transparent);
  color: var(--scroll-ink);
  background: var(--season-pale);
}

.aurora-learning-theme .voice-phrase:hover {
  border-color: color-mix(in srgb, var(--season-main) 42%, transparent);
  background: var(--season-soft);
}

.aurora-learning-theme .history-chart-wrap svg,
.aurora-learning-theme #history-chart {
  color: var(--season-main);
}

.aurora-learning-theme footer {
  color: var(--scroll-muted);
}

@media (max-width: 1320px) {
  .aurora-learning-theme .masthead {
    grid-template-columns: minmax(260px, 0.82fr) minmax(200px, 0.48fr) minmax(430px, 1.18fr);
    gap: 16px;
  }

  .masthead-season {
    grid-template-columns: 44px minmax(0, 1fr);
  }

  .masthead-season-motif {
    width: 44px;
    height: 44px;
  }
}

@media (max-width: 1180px) {
  .aurora-learning-theme .masthead {
    grid-template-columns: minmax(260px, 0.8fr) minmax(220px, 0.55fr);
  }

  .aurora-learning-theme .connection-bar {
    grid-column: 1 / -1;
  }

  .aurora-learning-theme .hero-grid {
    grid-template-columns: 1fr;
  }

  .aurora-learning-theme .overview-column {
    grid-template-columns: minmax(280px, 0.72fr) minmax(0, 1.28fr);
  }
}

@media (max-width: 820px) {
  .aurora-learning-theme .masthead {
    grid-template-columns: 1fr 0.72fr;
    padding: 18px;
  }

  .masthead-season {
    align-self: stretch;
  }

  .aurora-learning-theme .overview-column {
    grid-template-columns: 1fr;
  }

  .aurora-learning-theme .connection-bar {
    align-items: flex-start;
  }
}

@media (max-width: 620px) {
  .page-atmosphere::before {
    inset: -3rem -42vw;
    background-position: 61% center;
    opacity: 0.22;
    transform: scale(1.04);
  }

  .page-atmosphere::after {
    background: linear-gradient(180deg, rgba(247, 243, 232, 0.20), rgba(239, 233, 217, 0.62));
  }

  .aurora-learning-theme .masthead {
    grid-template-columns: 1fr;
    gap: 12px;
    border-radius: 8px 22px 22px 8px;
  }

  .aurora-learning-theme .brand-block {
    padding-right: 4px;
  }

  .aurora-learning-theme .season-seal {
    flex-basis: 48px;
    width: 48px;
    height: 48px;
    border-radius: 3px;
  }

  .aurora-learning-theme h1 {
    font-size: 29px;
  }

  .masthead-season {
    grid-template-columns: 44px minmax(0, 1fr);
    min-height: 64px;
  }

  .masthead-season strong {
    font-size: 20px;
  }

  .masthead-season p {
    white-space: normal;
  }

  .aurora-learning-theme .connection-bar {
    grid-column: auto;
  }

  .adaptive-overview-heading h2,
  .aurora-learning-theme .section-heading h2 {
    padding-right: 15px;
  }

  .aurora-learning-theme .season-phenology {
    font-size: 12px;
  }
}

@media (max-width: 390px) {
  .aurora-learning-theme .masthead {
    padding: 14px 13px;
  }

  .aurora-learning-theme .brand-block {
    gap: 10px;
  }

  .aurora-learning-theme h1 {
    font-size: 26px;
  }

  .aurora-learning-theme .connection-actions > * {
    flex-basis: 100%;
  }

  .masthead-season {
    padding: 8px 9px;
  }

  .masthead-season-motif {
    width: 42px;
    height: 42px;
  }
}

@media (prefers-reduced-motion: reduce) {
  body.aurora-learning-theme,
  .masthead-season,
  .aurora-learning-theme .adaptive-tabs button,
  .aurora-learning-theme .room {
    transition: none !important;
  }
}