:root {
  color-scheme: dark;
  background: #111713;
  font-family: Arial, sans-serif;
}
* {
  box-sizing: border-box;
}
html,
body {
  width: 100%;
  min-height: 100%;
  margin: 0;
  overflow-x: clip;
}
.scene {
  position: relative;
  z-index: 3;
  height: 100svh;
  isolation: isolate;
  background: #111713;
}
#lab-backdrop {
  position: fixed;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  image-rendering: pixelated;
  opacity: var(--room-opacity, 0);
}
.site-nav {
  position: fixed;
  z-index: 7;
  inset: 0 0 auto;
  height: 72px;
  background: #0c1a14e6;
  border-bottom: 1px solid #b0c28b35;
  box-shadow: 0 2px #07140d66;
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  opacity: var(--nav-reveal, 0);
  transform: translateY(calc((1 - var(--nav-reveal, 0)) * -16px));
}
.site-nav[aria-hidden="true"] {
  pointer-events: none;
}
.site-nav-inner {
  width: min(1120px, calc(100% - 48px));
  height: 100%;
  margin: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.site-links {
  display: flex;
  align-items: center;
  gap: 28px;
  opacity: var(--nav-links-reveal, 0);
}
.site-links a {
  --link-color: #9de1e8;
  padding: 12px 0 9px;
  border-bottom: 2px solid transparent;
  color: #c2d1ba;
  text-decoration: none;
  white-space: nowrap;
  font:
    16px/1 "AIchemy Pixel",
    monospace;
}
.site-links a:nth-child(2) {
  --link-color: #dabbff;
}
.site-links a:nth-child(3) {
  --link-color: #ffce85;
}
.site-links a:hover,
.site-links a[aria-current="location"] {
  color: var(--link-color);
  border-bottom-color: var(--link-color);
}
.site-links a:focus-visible {
  outline: 2px solid var(--link-color);
  outline-offset: 4px;
}
.site-label-short {
  display: none;
}
.site-brand-slot {
  flex: 0 0 224px;
  height: 36px;
}
.has-site-nav .animation-toggle {
  visibility: hidden;
}
#furnace {
  position: absolute;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
}
.vignette,
.scanlines {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.vignette {
  background: radial-gradient(
    ellipse at 50% 46%,
    transparent 40%,
    rgba(7, 13, 9, 0.17) 78%,
    rgba(7, 13, 9, 0.48) 100%
  );
}
.scanlines {
  opacity: 0.055;
  background: repeating-linear-gradient(
    0deg,
    transparent 0,
    transparent 3px,
    #020804 3px,
    #020804 4px
  );
}
.animation-toggle {
  position: absolute;
  right: max(20px, env(safe-area-inset-right));
  top: 20px;
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  padding: 12px;
  border: 1px solid #71805a66;
  background: #172218aa;
  color: #bdc9a1;
  opacity: 0;
  cursor: pointer;
  transition:
    opacity 0.4s,
    background 0.2s;
  -webkit-tap-highlight-color: transparent;
}
.animation-toggle svg {
  grid-area: 1 / 1;
  width: 16px;
  height: 16px;
}
.play-icon {
  display: none;
}
.is-paused .pause-icon {
  display: none;
}
.is-paused .play-icon {
  display: block;
}
.scene.controls-visible .animation-toggle,
.scene.is-paused .animation-toggle {
  opacity: 0.55;
}
.animation-toggle:hover,
.animation-toggle:focus-visible {
  opacity: 1 !important;
  background: #273323;
}
.animation-toggle:focus-visible {
  outline: 2px solid #ed864e;
  outline-offset: 4px;
}

/* Hero style switch: the original pixel furnace or the 3D dot-matrix furnace. */
.mode-switch {
  position: absolute;
  z-index: 5;
  top: 20px;
  right: calc(max(20px, env(safe-area-inset-right)) + 52px);
  display: flex;
  height: 44px;
  gap: 3px;
  padding: 3px;
  border: 1px solid #71805a66;
  background: #172218aa;
  opacity: 0.72;
  transition: opacity 0.4s;
}
.mode-switch:hover,
.mode-switch:focus-within,
.scene.controls-visible .mode-switch {
  opacity: 1;
}
.has-site-nav .mode-switch {
  visibility: hidden;
}
.mode-switch[hidden] {
  display: none;
}
.mode-option {
  --mode-accent: #ed864e;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 0 10px;
  border: 0;
  background: transparent;
  color: #9ead86;
  font:
    14px/1 "AIchemy Pixel",
    monospace;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  transition:
    background 0.2s,
    color 0.2s;
}
.mode-3d {
  --mode-accent: #9de1e8;
}
.mode-option svg {
  width: 14px;
  height: 14px;
  fill: currentColor;
  shape-rendering: crispEdges;
}
.mode-option:hover {
  background: #273323;
  color: #e4ecd2;
}
.mode-option[aria-pressed="true"] {
  background: #273323;
  color: var(--mode-accent);
  box-shadow: inset 0 -2px var(--mode-accent);
}
.mode-option:focus-visible {
  outline: 2px solid var(--mode-accent);
  outline-offset: 2px;
}
/* In 3D mode a fixed WebGL canvas replaces the pixel scene behind the page.
   The pixel canvas keeps its layout so the title still finds its home position. */
#hero-3d,
.hero-3d-tags {
  display: none;
}
.furnace-3d #hero-3d {
  position: fixed;
  inset: 0;
  z-index: 0;
  display: block;
  width: 100%;
  height: 100%;
  pointer-events: none;
}
.furnace-3d #furnace,
.furnace-3d #lab-backdrop {
  visibility: hidden;
}
.furnace-3d .scene {
  background: transparent;
}
.furnace-3d .scene::before {
  content: "";
  position: absolute;
  inset: 28px 32px;
  pointer-events: none;
  background:
    linear-gradient(#9de1e855, #9de1e855) left top / 28px 1px no-repeat,
    linear-gradient(#9de1e855, #9de1e855) left top / 1px 28px no-repeat,
    linear-gradient(#ffce8555, #ffce8555) right bottom / 28px 1px no-repeat,
    linear-gradient(#ffce8555, #ffce8555) right bottom / 1px 28px no-repeat;
}
/* Callouts pinned to the 3D furnace by furnace3d.js: 料, 火 and 丹. */
.furnace-3d .hero-3d-tags {
  position: fixed;
  inset: 0;
  z-index: 1;
  display: block;
  overflow: hidden;
  pointer-events: none;
}
.hero-tag {
  --tag-accent: #9de1e8;
  --tag-rgb: 114 218 229;
  position: absolute;
  top: 0;
  left: 0;
  will-change: transform;
}
.tag-fire {
  --tag-accent: #ffb25a;
  --tag-rgb: 255 160 80;
}
.tag-pill {
  --tag-accent: #ffce85;
  --tag-rgb: 249 192 104;
}
.hero-tag::before {
  content: "";
  position: absolute;
  top: -3px;
  left: -3px;
  width: 6px;
  height: 6px;
  background: var(--tag-accent);
  box-shadow: 0 0 10px rgb(var(--tag-rgb) / 0.9);
}
/* The leader runs from the anchor dot to the label's nearest corner. */
.hero-tag::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 46px;
  height: 1px;
  background: linear-gradient(90deg, var(--tag-accent), rgb(var(--tag-rgb) / 0.35));
  transform: rotate(-36deg);
  transform-origin: 0 0;
}
.hero-tag.is-left::after {
  transform: rotate(-144deg);
}
.hero-tag > span {
  position: absolute;
  bottom: 27px;
  left: 37px;
  display: grid;
  gap: 5px;
  padding: 7px 11px 8px;
  border: 1px solid rgb(var(--tag-rgb) / 0.45);
  border-left: 2px solid var(--tag-accent);
  background: #07120dcc;
  color: #e6eed7;
  font-size: 14px;
  line-height: 1;
  letter-spacing: 2px;
  white-space: nowrap;
}
.hero-tag.is-left > span {
  right: 37px;
  left: auto;
  border-right: 2px solid var(--tag-accent);
  border-left: 1px solid rgb(var(--tag-rgb) / 0.45);
  text-align: right;
}
.hero-tag b {
  color: var(--tag-accent);
  font:
    9px/1 "Courier New",
    monospace;
  letter-spacing: 2px;
}
@media (max-width: 700px) {
  .hero-tag > span {
    padding: 5px 8px 6px;
    font-size: 12px;
    letter-spacing: 1px;
  }
}
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}
@media (prefers-reduced-motion: reduce) {
  * {
    transition: none !important;
  }
}

@font-face {
  font-family: "AIchemy HUD";
  src: url("./assets/noto-sans-sc.woff2") format("woff2");
  font-style: normal;
  font-weight: 400 800;
  font-display: swap;
}

html {
  scroll-behavior: smooth;
}
body {
  font-family: "AIchemy HUD", Arial, sans-serif;
}
a {
  color: inherit;
}

@font-face {
  font-family: "AIchemy Pixel";
  src: url("./assets/unifont-pixel.woff2") format("woff2");
  font-style: normal;
  font-weight: 400;
  font-display: swap;
}
@font-face {
  font-family: "AIchemy Pixel";
  src: url("./assets/unifont-news.woff2") format("woff2");
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  unicode-range: U+4E8B, U+8BAF, U+8D44, U+8D77, U+9C9C;
}
.hero-title-space {
  position: fixed;
  z-index: 8;
  top: var(--title-y, var(--title-home-top, 27svh));
  left: var(--title-x, 50%);
  width: max-content;
  max-width: calc(100% - 48px);
  transform: translateX(-50%) scale(var(--title-scale, 1));
  transform-origin: center top;
  text-align: center;
  pointer-events: none;
}
.hero-brand {
  display: block;
  color: inherit;
  text-decoration: none;
}
.hero-brand:focus-visible {
  outline: 2px solid #eed7a1;
  outline-offset: 8px;
}
.hero-title-space::before {
  content: "";
  position: absolute;
  z-index: -1;
  inset: -18px -28px -20px;
  -webkit-backdrop-filter: blur(3px);
  backdrop-filter: blur(3px);
  -webkit-mask-image: radial-gradient(
    ellipse,
    #000 42%,
    #000b 60%,
    transparent 78%
  );
  mask-image: radial-gradient(ellipse, #000 42%, #000b 60%, transparent 78%);
  opacity: var(--title-backdrop, 1);
  background: radial-gradient(
    ellipse,
    #09170d99 0%,
    #0b1b115c 50%,
    #0b1b1100 78%
  );
}
.hero-title-space h1 {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 13px;
  margin: 0;
  color: #edf1d4;
  font-family: "AIchemy Pixel", monospace;
  font-size: 80px;
  font-weight: 400;
  font-synthesis: none;
  line-height: 1;
  letter-spacing: 0;
  text-shadow:
    2px 0 0 #0b170f,
    -2px 0 0 #0b170f,
    0 -2px 0 #0b170f,
    0 3px 0 #0b170f,
    3px 4px 0 #0b170f;
}
.title-cn {
  color: #eed7a1;
}
.title-en {
  font-family: inherit;
  font-weight: 400;
  letter-spacing: 0;
}
.hero-title-space p {
  opacity: var(--subtitle-opacity, 1);
  margin: 12px 0 0;
  color: #f0edcf;
  font-family: "AIchemy Pixel", monospace;
  font-size: 20px;
  letter-spacing: 2px;
  line-height: 1.2;
  text-shadow:
    0 2px 3px #08150d,
    0 0 9px #08150d;
}
/* The 3D hero uses the left side for a two-line title and the right for the furnace. */
.hero-kicker {
  display: none;
}
.furnace-3d .hero-kicker {
  position: absolute;
  top: -30px;
  left: 0;
  display: block;
  padding-left: 22px;
  color: #9de1e8;
  opacity: var(--subtitle-opacity, 1);
  font: 10px/1.2 "Courier New", monospace;
  letter-spacing: 3px;
  white-space: nowrap;
}
.hero-kicker::before {
  content: "";
  position: absolute;
  top: 3px;
  left: 0;
  width: 6px;
  height: 6px;
  background: #9de1e8;
  box-shadow: 0 0 12px #9de1e866;
}
.furnace-3d .hero-title-space {
  top: var(--title-y, 29svh);
  left: var(--title-x, 6vw);
  transform: scale(var(--title-scale, 1));
  transform-origin: left top;
  text-align: left;
}
.furnace-3d .hero-title-space h1 {
  position: relative;
  display: block;
  width: var(--title-heading-width, 3.5em);
  height: var(--title-heading-height, calc(2em + 13px));
  font-size: clamp(80px, 7.2vw, 128px);
}
.furnace-3d .title-cn,
.furnace-3d .title-en {
  display: block;
  width: max-content;
}
.furnace-3d .title-en {
  position: absolute;
  top: 0;
  left: 0;
  transform: translate(var(--title-en-x, 0px), var(--title-en-y, calc(1em + 13px)));
}
.furnace-3d .hud-training {
  left: 42%;
  top: 45%;
}
.furnace-3d .hud-loss {
  right: 5%;
  top: 27%;
}
.furnace-3d .hud-compute {
  left: 43%;
  top: 11%;
  bottom: auto;
}
.furnace-3d .hud-data {
  right: 5%;
  bottom: 22%;
}
@media (min-width: 1101px) and (min-height: 551px) {
  .furnace-3d .scene-nav {
    left: 6%;
    bottom: 48px;
    width: min(640px, 47%);
    transform: none;
  }
  .furnace-3d .nav-body svg {
    display: none;
  }
}
/* The full-viewport canvas is unchanged. All interface elements are separate overlays. */
.console-dock,
.holograms {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.console-dock {
  z-index: 2;
}
.holograms {
  color: #d9e4c7;
}
.hud-window {
  --accent: #b8c790;
  position: absolute;
  border: 1px solid #91a67488;
  background: linear-gradient(180deg, #182d23c2, #102319a8);
  box-shadow:
    inset 2px 2px #b7c39316,
    inset -2px -2px #07140e66,
    2px 3px 0 #09180f99;
  pointer-events: auto;
}
.hud-window::before {
  content: "";
  position: absolute;
  inset: -2px;
  pointer-events: none;
  background:
    linear-gradient(var(--accent), var(--accent)) top left / 3px 2px no-repeat,
    linear-gradient(var(--accent), var(--accent)) bottom right / 3px 2px
      no-repeat;
  opacity: 0.75;
}
.hud-window::after {
  content: "";
  position: absolute;
  inset: -3px;
  pointer-events: none;
  background:
    linear-gradient(#859370, #859370) top left / 3px 3px no-repeat,
    linear-gradient(#859370, #859370) bottom right / 3px 3px no-repeat;
  opacity: 0.8;
}
.hud-training {
  --accent: #e4b87c;
  width: 132px;
  height: 76px;
  left: 11%;
  top: 38%;
}
.hud-loss {
  width: 156px;
  height: 76px;
  right: 10%;
  top: 29%;
}
.hud-compute {
  width: 116px;
  height: 70px;
  left: 6%;
  bottom: 16%;
}
.hud-data {
  width: 160px;
  height: 64px;
  right: 17%;
  bottom: 22%;
}
.hud-titlebar {
  height: 17px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 5px;
  padding: 0 6px;
  border-bottom: 1px solid #9faf792f;
  background: #94ac7020;
}
.hud-titlebar h2 {
  display: flex;
  align-items: center;
  gap: 4px;
  margin: 0;
  color: #c0ceaa;
  font:
    6px "Courier New",
    monospace;
  letter-spacing: 0.6px;
}
.hud-indicator {
  width: 3px;
  height: 3px;
  background: var(--accent);
}
.hud-mount {
  color: #a4b383;
  font: 8px monospace;
}
.hud-body {
  padding: 5px 7px;
  font-family: "Courier New", monospace;
}
.epoch-line {
  display: flex;
  align-items: baseline;
  gap: 5px;
  margin: 0 0 6px;
}
.epoch-line strong {
  color: #f2c78c;
  font-size: 24px;
  line-height: 1;
  font-weight: 400;
}
.epoch-line > span {
  font-size: 9px;
  color: #b8c6a4;
}
.epoch-line small {
  display: block;
  margin-top: 2px;
  font-size: 5px;
  letter-spacing: 0.5px;
  color: #a5b392;
}
#hud-progress-label {
  margin-left: auto;
  color: #d5c18d;
  font-size: 7px;
}
.hud-progress {
  height: 3px;
  background: #81956435;
}
.hud-progress > span {
  display: block;
  height: 3px;
  width: 25%;
  background: #d6ab6b;
}
.hud-loss .hud-body {
  display: grid;
  grid-template-columns: 42px 1fr;
  align-items: center;
  gap: 5px;
  height: 57px;
}
.loss-line strong {
  display: block;
  color: #e7c18a;
  font-weight: 400;
  font-size: 14px;
  line-height: 1;
}
.loss-line > span {
  display: block;
  margin-top: 4px;
  color: #b2c995;
  font-size: 9px;
}
#hud-loss-chart {
  display: block;
  width: 100%;
  height: 38px;
  image-rendering: pixelated;
}
.hud-compute .hud-body {
  padding-top: 4px;
}
.resource-line,
.memory-line {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}
.resource-line > span {
  color: #b5c49f;
  font-size: 6px;
}
.resource-line strong {
  font-weight: 400;
  color: #d7e1b6;
  font-size: 13px;
  line-height: 1;
}
.resource-line small {
  font-size: 7px;
  margin-left: 2px;
}
.segment-meter {
  display: flex;
  gap: 2px;
  height: 4px;
  margin-top: 4px;
}
.segment-meter i {
  flex: 1;
  height: 4px;
  background: #98ac7028;
}
.segment-meter .is-lit {
  background: #b3c78c;
}
.segment-meter .is-lit:nth-last-child(-n + 3) {
  background: #d1b477;
}
.memory-line {
  margin-top: 5px;
  color: #aabc99;
  font-size: 6px;
}
.memory-line b {
  font-weight: 400;
  color: #d6dfc2;
}
.memory-track {
  height: 2px;
  margin-top: 3px;
  background: #81956435;
}
.memory-track > span {
  height: 2px;
  display: block;
  background: #8daf89;
}
.hud-data .hud-body {
  padding-top: 4px;
  padding-bottom: 4px;
}
.data-log {
  color: #bfd0ac;
  font:
    7px/1.75 "Courier New",
    monospace;
}
.data-log p {
  margin: 0;
  white-space: nowrap;
}
.data-log p > span {
  color: #8caa7d;
  font-size: 6px;
  margin-right: 5px;
}
.data-log p:last-child {
  color: #e3c08a;
}
.animation-toggle {
  z-index: 5;
}
.scene-nav {
  position: absolute;
  z-index: 3;
  left: 50%;
  bottom: 28px;
  width: min(760px, calc(100% - 56px));
  height: 100px;
  transform: translateX(-50%);
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}
.nav-window {
  --float-y: 0px;
  --nav-accent: #9de1e8;
  --nav-rgb: 114 218 229;
  --nav-surface: #234451ed;
  --nav-base: #162f3bec;
  --nav-ink: #d8f8fb;
  --nav-muted: #abd4db;
  position: relative;
  display: flex;
  flex-direction: column;
  min-width: 0;
  border: 1px solid rgb(var(--nav-rgb) / 0.65);
  background:
    repeating-linear-gradient(0deg, transparent 0 3px, #06130b16 3px 4px),
    linear-gradient(180deg, var(--nav-surface), var(--nav-base));
  box-shadow:
    0 0 0 2px #111e17cc,
    3px 5px 0 #030d0870,
    inset 2px 2px rgb(var(--nav-rgb) / 0.14),
    inset -2px -2px #04100d66;
  text-decoration: none;
  color: var(--nav-ink);
  transform: translateY(calc(var(--float-y) + var(--window-offset, 0px)));
  transition:
    border-color 0.2s,
    box-shadow 0.2s;
}
.nav-window::before {
  content: "";
  position: absolute;
  inset: -2px;
  pointer-events: none;
  background:
    linear-gradient(var(--nav-accent), var(--nav-accent)) top left / 7px 2px
      no-repeat,
    linear-gradient(var(--nav-accent), var(--nav-accent)) top left / 2px 7px
      no-repeat,
    linear-gradient(var(--nav-accent), var(--nav-accent)) bottom right / 7px 2px
      no-repeat,
    linear-gradient(var(--nav-accent), var(--nav-accent)) bottom right / 2px 7px
      no-repeat;
}
.nav-services {
  --window-offset: -3px;
}
.nav-activities {
  --nav-accent: #dabbff;
  --nav-rgb: 190 148 247;
  --nav-surface: #3f3356ed;
  --nav-base: #2e243eec;
  --nav-ink: #eee1ff;
  --nav-muted: #cabcdf;
  --window-offset: 3px;
}
.nav-join {
  --nav-accent: #ffce85;
  --nav-rgb: 249 192 104;
  --nav-surface: #534026ed;
  --nav-base: #3c2e1eec;
  --nav-ink: #ffedc9;
  --nav-muted: #deccab;
  --window-offset: -5px;
}
.nav-titlebar {
  display: flex;
  align-items: center;
  gap: 5px;
  height: 21px;
  flex: 0 0 21px;
  padding: 0 8px;
  background: rgb(var(--nav-rgb) / 0.12);
  border-bottom: 1px solid rgb(var(--nav-rgb) / 0.25);
  font:
    8px "Courier New",
    monospace;
  letter-spacing: 0.5px;
  color: var(--nav-accent);
}
.nav-titlebar > i {
  width: 3px;
  height: 3px;
  background: var(--nav-accent);
}
.nav-lights {
  opacity: 0.4;
  display: flex;
  gap: 6px;
  align-items: center;
  margin-left: auto;
  font:
    11px/1 "Courier New",
    monospace;
  color: var(--nav-accent);
  letter-spacing: 0;
}
.nav-lights b {
  font-weight: 400;
}
.nav-body {
  display: flex;
  flex: 1;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
}
.nav-body svg {
  width: 20px;
  height: 20px;
  flex: 0 0 20px;
  fill: none;
  stroke: var(--nav-accent);
  stroke-width: 1.6;
  shape-rendering: crispEdges;
}
.nav-body strong {
  display: block;
  font-family: "AIchemy Pixel", monospace;
  font-size: 20px;
  line-height: 1.15;
  font-weight: 400;
  text-shadow: 1px 1px #172619;
  white-space: nowrap;
}
.nav-body strong > span {
  display: inline-block;
}
.nav-body small {
  display: block;
  font-size: 10px;
  line-height: 1.4;
  margin-top: 6px;
  color: var(--nav-muted);
}
.nav-arrow {
  margin-left: auto;
  font:
    16px "AIchemy Pixel",
    monospace;
  color: var(--nav-accent);
}
.nav-window:hover {
  border-color: var(--nav-ink);
  background: linear-gradient(
    135deg,
    rgb(var(--nav-rgb) / 0.36),
    var(--nav-base)
  );
  box-shadow:
    0 8px 20px #030d0870,
    0 0 22px rgb(var(--nav-rgb) / 0.35),
    inset 0 0 12px rgb(var(--nav-rgb) / 0.2);
}
.nav-window:active {
  box-shadow:
    0 0 0 2px #111e17cc,
    inset 2px 3px #03120f99;
}
.nav-window:focus-visible {
  outline: 2px solid var(--nav-accent);
  outline-offset: 5px;
}
.club-content {
  z-index: 1;
  position: relative;
  padding: 0 max(28px, calc((100% - 1120px) / 2));
  background:
    linear-gradient(#a3ba8904 1px, transparent 1px) 0 0 / 48px 48px,
    linear-gradient(90deg, #a3ba8904 1px, transparent 1px) 0 0 / 48px 48px,
    radial-gradient(ellipse at 0 20%, #2a3c292b, transparent 70%),
    #101c168f;
  color: #cdd8bc;
}
.detail-section {
  --section-accent: #ffce85;
  --section-rgb: 249 192 104;
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  align-content: center;
  align-items: center;
  gap: 24px;
  padding: 64px 0 48px;
  border-bottom: 1px solid #62795240;
  scroll-margin-top: 88px;
}
#services {
  --section-accent: #9de1e8;
  --section-rgb: 114 218 229;
}
#activities {
  --section-accent: #dabbff;
  --section-rgb: 190 148 247;
}
.detail-section:focus {
  outline: none;
}
.section-index {
  display: inline-block;
  padding-left: 16px;
  border-left: 4px solid var(--section-accent);
  color: var(--section-accent);
  font:
    10px "Courier New",
    monospace;
  letter-spacing: 3px;
}
.section-heading h2 {
  font-family: "AIchemy Pixel", monospace;
  font-size: 32px;
  font-weight: 400;
  font-synthesis: none;
  letter-spacing: 1px;
  margin: 20px 0 12px;
  color: #e0e7cf;
}
.section-heading p {
  color: #b0bea3;
  font-size: 13px;
  letter-spacing: 2px;
  margin: 0;
}
.section-list {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.section-panel {
  min-height: 96px;
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr) auto;
  align-items: center;
  gap: 20px;
  padding: 24px;
  border: 1px solid rgb(var(--section-rgb) / 0.22);
  background:
    linear-gradient(
      rgb(var(--section-rgb) / 0.025),
      rgb(var(--section-rgb) / 0.025)
    ),
    #101c16c9;
  box-shadow:
    inset 3px 0 rgb(var(--section-rgb) / 0.3),
    inset 0 1px #d1dec908;
}
.section-icon {
  width: 32px;
  height: 32px;
  fill: none;
  stroke: var(--section-accent);
  stroke-width: 1.5;
  shape-rendering: crispEdges;
}
.service-entry {
  color: inherit;
  text-decoration: none;
  transition:
    border-color 160ms ease,
    background 160ms ease,
    transform 160ms ease;
}
.service-entry:hover {
  border-color: rgb(var(--section-rgb) / 0.52);
  background:
    linear-gradient(
      rgb(var(--section-rgb) / 0.08),
      rgb(var(--section-rgb) / 0.08)
    ),
    #101c16e8;
  transform: translateY(-2px);
}
.service-entry:focus-visible {
  outline: 2px solid var(--section-accent);
  outline-offset: 5px;
}
.service-entry code {
  color: var(--section-accent);
  font-family: "AIchemy Pixel", monospace;
  font-size: 11px;
}
.section-panel h3 {
  font-family: "AIchemy Pixel", monospace;
  margin: 0 0 9px;
  font-size: 16px;
  font-weight: 400;
  color: #e0e6d1;
}
.section-panel p {
  margin: 0;
  font-size: 12px;
  line-height: 1.8;
  color: #afbea2;
}
.placeholder-status {
  margin-left: auto;
  border: 1px solid rgb(var(--section-rgb) / 0.3);
  padding: 5px 8px;
  color: var(--section-accent);
  font-size: 10px;
  white-space: nowrap;
}
.section-panel.news-entry {
  grid-template-columns: minmax(0, 1fr) 88px auto;
  color: inherit;
  text-decoration: none;
}
.news-entry:hover {
  border-color: var(--section-accent);
  background: #1b2523;
}
.news-entry h3 {
  margin-top: 8px;
  font-family: "AIchemy HUD", Arial, sans-serif;
  line-height: 1.6;
}
.news-preview {
  display: flex;
  width: 88px;
  height: 48px;
  gap: 2px;
  overflow: hidden;
  border: 1px solid rgb(var(--section-rgb) / 0.28);
  background: #0b1210;
}
.news-preview img {
  display: block;
  flex: 1 1 0;
  min-width: 0;
  height: 100%;
  object-fit: cover;
}
.news-entry-arrow {
  color: var(--section-accent);
  font-size: 24px;
}
.news-entry:focus-visible,
.news-page-nav a:focus-visible,
.news-back-link:focus-visible {
  outline: 2px solid var(--section-accent);
  outline-offset: 4px;
}
.news-page {
  --section-accent: #dabbff;
  --section-rgb: 190 148 247;
  background:
    radial-gradient(ellipse at 0 0, #34304755, transparent 55%),
    #111713;
  color: #cdd8bc;
}
.news-page-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: min(1040px, calc(100% - 40px));
  margin: auto;
  padding: 24px 0;
  border-bottom: 1px solid #62795240;
}
.news-home-link {
  color: #eed7a1;
  font: 20px/1.4 "AIchemy Pixel", monospace;
  text-decoration: none;
}
.news-back-link {
  color: var(--section-accent);
  font-size: 13px;
  line-height: 1.6;
  text-underline-offset: 5px;
}
.news-page-main {
  width: min(1040px, calc(100% - 40px));
  margin: 32px auto 0;
}
.news-page-footer {
  padding: 24px 0 40px;
}
.news-article {
  padding: clamp(16px, 3vw, 32px);
  border: 1px solid rgb(var(--section-rgb) / 0.3);
  background: #101c16ed;
  box-shadow: inset 3px 0 rgb(var(--section-rgb) / 0.35);
  scroll-margin-top: 88px;
}
.news-category {
  color: var(--section-accent);
  font-size: 12px;
  letter-spacing: 2px;
}
.news-header h1 {
  margin: 12px 0;
  color: #e9e5f0;
  font-size: clamp(20px, 2.2vw, 26px);
  line-height: 1.5;
}
.news-header p,
.news-giveaway > p {
  margin: 0;
  color: #b8c6ad;
  font-size: 14px;
  line-height: 1.9;
}
.news-giveaway {
  margin: 24px 0;
}
.news-giveaway > p > strong {
  margin-inline: 0.25em;
  color: #efd7a1;
}
.merch-quantities {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  max-width: 440px;
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}
.merch-quantities li {
  display: grid;
  gap: 6px;
  padding: 14px 16px;
  border: 1px solid #e3c88b33;
  background: #e3c88b08;
}
.merch-quantities li > span:first-child {
  color: #e0e7cf;
  font-size: 14px;
}
.merch-quantities strong {
  color: #efd7a1;
  font: 32px/1.2 "AIchemy Pixel", monospace;
}
.merch-quantities small,
.merch-quantities li > span:last-child {
  color: #b0bea3;
  font: 12px/1.5 "AIchemy HUD", Arial, sans-serif;
}
.mascot-gallery {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}
.mascot-gallery figure {
  min-width: 0;
  margin: 0;
}
.mascot-gallery a {
  display: block;
  border: 1px solid rgb(var(--section-rgb) / 0.25);
  background: #0b1210;
}
.mascot-gallery a:hover {
  border-color: var(--section-accent);
}
.mascot-gallery a:focus-visible {
  outline: 2px solid var(--section-accent);
  outline-offset: 4px;
}
.mascot-gallery img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 5;
  object-fit: contain;
}
.mascot-gallery figcaption,
.news-image-note {
  margin: 10px 0 0;
  color: #a9b8a1;
  font-size: 12px;
  line-height: 1.6;
}
.news-image-note {
  margin-top: 18px;
}
@media (max-width: 700px) {
  .news-page-nav {
    gap: 12px;
    padding-block: 20px;
  }
  .news-home-link {
    font-size: 18px;
  }
  .news-page-nav .news-back-link {
    font-size: 12px;
    white-space: nowrap;
  }
  .news-page-main {
    margin-top: 20px;
  }
  .mascot-gallery {
    grid-template-columns: minmax(0, 1fr);
    gap: 20px;
  }
  .news-article {
    scroll-margin-top: 76px;
  }
  .nav-activities .nav-body strong {
    font-size: 14px;
  }
}
.detail-section:last-child {
  border-bottom: 0;
}
#community {
  --section-accent: #b8c790;
  --section-rgb: 184 199 144;
}
.community-section {
  gap: 28px;
}
.community-groups {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}
.community-group {
  --community-accent: #9de1e8;
  --community-rgb: 114 218 229;
  min-width: 0;
  padding: 20px;
  border: 1px solid rgb(var(--community-rgb) / 0.28);
  background:
    repeating-linear-gradient(0deg, transparent 0 4px, #06130b12 4px 5px),
    rgb(var(--community-rgb) / 0.04);
  box-shadow:
    inset 3px 0 rgb(var(--community-rgb) / 0.45),
    inset 0 1px #d1dec908;
}
.community-links {
  --community-accent: #dabbff;
  --community-rgb: 190 148 247;
}
.community-group header {
  display: grid;
  grid-template-columns: 28px auto 1fr;
  align-items: baseline;
  column-gap: 9px;
  padding-bottom: 14px;
  border-bottom: 1px solid rgb(var(--community-rgb) / 0.2);
}
.community-mark {
  color: var(--community-accent);
  font:
    20px/1 "AIchemy Pixel",
    monospace;
}
.community-group h3 {
  margin: 0;
  color: #e0e7cf;
  font:
    20px/1 "AIchemy Pixel",
    monospace;
  font-weight: 400;
}
.community-group header small {
  justify-self: end;
  color: #aebda3;
  font-size: 10px;
  white-space: nowrap;
}
.community-link-list {
  display: grid;
  gap: 10px;
}
.community-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  min-width: 0;
  padding: 14px 4px 12px 2px;
  border-bottom: 1px solid rgb(var(--community-rgb) / 0.16);
  color: #dce6d1;
  text-decoration: none;
}
.community-link:last-child {
  border-bottom: 0;
}
.community-link strong,
.community-link small {
  display: block;
}
.community-link strong {
  overflow: hidden;
  color: var(--community-accent);
  font:
    17px/1.2 "AIchemy Pixel",
    monospace;
  font-weight: 400;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.community-link small {
  margin-top: 5px;
  color: #aebda3;
  font-size: 10px;
}
.community-arrow {
  flex: 0 0 auto;
  color: var(--community-accent);
  font:
    18px/1 "AIchemy Pixel",
    monospace;
  transition: transform 0.2s;
}
.community-link:hover {
  color: #f0f4df;
}
.community-link:hover .community-arrow {
  transform: translate(3px, -3px);
}
.community-link:focus-visible {
  outline: 2px solid var(--community-accent);
  outline-offset: 4px;
}
.detail-section.join-section {
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 28px 48px;
}
.join-copy {
  min-width: 0;
}
.join-copy .section-heading p {
  color: #ead4a1;
  line-height: 1.8;
  letter-spacing: 1px;
}
.join-note {
  max-width: 320px;
  margin: 12px 0 0;
  color: #9dac8e;
  font-size: 11px;
  line-height: 1.8;
}
.wechat-code {
  display: block;
  width: 144px;
  margin: 0;
  background: #fff;
  border: 0;
  box-shadow:
    0 0 0 4px #bca36a33,
    0 10px 28px #070e0a40;
}
.wechat-code img {
  display: block;
  width: 100%;
  height: auto;
}
.wechat-code:focus-visible {
  outline: 2px solid #e1bc7c;
  outline-offset: 7px;
}
.qr-save {
  display: inline-block;
  margin-top: 16px;
  padding: 10px 16px;
  border: 1px solid #bca36a70;
  background: #c1a35e0e;
  color: #ead4a1;
  font-size: 11px;
  text-decoration: none;
}
.qr-save:hover {
  background: #c1a35e24;
}
.qr-save:focus-visible {
  outline: 2px solid #e1bc7c;
  outline-offset: 4px;
}
.back-link {
  grid-column: 1 / -1;
  justify-self: end;
  font-size: 11px;
  letter-spacing: 1px;
  color: #9cac86;
  text-underline-offset: 5px;
}
.back-link:hover {
  color: #e1bc7c;
}
.back-link:focus-visible {
  outline: 2px solid #e1bc7c;
  outline-offset: 6px;
}

@media (min-width: 1600px) and (min-height: 950px) {
  .hero-title-space h1 {
    font-size: 96px;
  }
}
@media (max-width: 1100px) {
  .nav-body svg {
    display: none;
  }
  .hud-compute {
    left: 4%;
    bottom: 25%;
  }
  .hud-data {
    right: 5%;
    bottom: 29%;
  }
  .hud-training {
    left: 7%;
    top: 37%;
  }
  .hud-loss {
    right: 5%;
    top: 26%;
  }
  .section-panel {
    padding: 22px;
    gap: 14px;
  }
}
@media (max-width: 700px) {
  .site-nav {
    height: 60px;
  }
  .site-nav-inner {
    width: calc(100% - 32px);
    gap: 16px;
  }
  .site-links {
    gap: 18px;
  }
  .site-links a {
    font-size: 14px;
  }
  .site-label-full {
    display: none;
  }
  .site-label-short {
    display: inline;
  }
  .site-brand-slot {
    flex-basis: 136px;
    height: 24px;
  }
  .detail-section {
    scroll-margin-top: 76px;
  }
  .hero-title-space {
    max-width: calc(100% - 34px);
  }
  .hero-title-space::before {
    inset: -16px -10px -18px;
  }
  .hero-title-space h1 {
    font-size: 48px;
    gap: 8px;
  }
  .title-en {
    letter-spacing: 0;
  }
  .hero-title-space p {
    font-size: 18px;
    letter-spacing: 0;
    margin-top: 10px;
  }
  .hud-training {
    left: 4%;
    top: 40%;
    width: 124px;
  }
  .hud-loss {
    right: 4%;
    top: 49%;
    width: 138px;
  }
  .hud-compute {
    left: 5%;
    bottom: 26%;
    width: 108px;
  }
  .hud-data {
    right: 4%;
    bottom: 24%;
    width: 146px;
  }
  .scene-nav {
    width: calc(100% - 28px);
    height: 100px;
    gap: 10px;
    bottom: 24px;
  }
  .nav-titlebar {
    padding: 0 6px;
    font-size: 7px;
    letter-spacing: 0;
    gap: 4px;
  }
  .nav-lights {
    font-size: 8px;
    gap: 4px;
  }
  .nav-body {
    padding: 6px 5px 12px;
    justify-content: center;
    text-align: center;
  }
  .nav-body svg {
    display: none;
  }
  .nav-arrow {
    position: absolute;
    bottom: 5px;
    right: 7px;
    font-size: 12px;
  }
  .nav-body strong {
    font-size: 16px;
    min-height: 36px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    line-height: 1.1;
  }
  .nav-body small {
    font-size: 9px;
    margin-top: 4px;
  }
  .club-content {
    padding: 0 24px;
  }
  .detail-section {
    grid-template-columns: 1fr;
    padding: 44px 0 32px;
    gap: 20px;
  }
  .section-heading h2 {
    font-size: 24px;
    letter-spacing: 1px;
  }
  .section-panel {
    min-height: 104px;
    grid-template-columns: 24px minmax(0, 1fr) auto;
    gap: 12px;
    padding: 16px;
  }
  .section-panel.news-entry {
    grid-template-columns: minmax(0, 1fr) 72px auto;
  }
  .news-preview {
    width: 72px;
    height: 44px;
  }
  .news-entry h3,
  .news-entry p {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }
  .section-icon {
    width: 24px;
    height: 24px;
  }
  .section-panel h3 {
    font-size: 14px;
  }
  .detail-section.join-section {
    gap: 24px;
  }
  .community-groups {
    grid-template-columns: 1fr;
    gap: 14px;
  }
  .community-group {
    padding: 16px;
  }
  .join-copy .section-heading h2 {
    font-size: 24px;
  }
  .join-copy .section-heading p {
    font-size: 12px;
  }
  .wechat-code {
    width: 120px;
  }
}
@media (max-width: 420px) {
  .nav-titlebar {
    font-size: 6px;
  }
  .nav-lights {
    font-size: 8px;
    gap: 3px;
  }
  .nav-body strong {
    font-size: 16px;
  }
  .nav-body small {
    font-size: 8px;
  }
}
@media (max-width: 360px) {
  .site-nav-inner {
    width: calc(100% - 24px);
    gap: 12px;
  }
  .site-links {
    gap: 12px;
  }
  .site-brand-slot {
    flex-basis: 124px;
  }
  .detail-section.join-section {
    column-gap: 16px;
  }
  .wechat-code {
    width: 104px;
  }
  .hero-title-space h1 {
    font-size: 40px;
  }
  .hero-title-space p {
    font-size: 16px;
    letter-spacing: 0;
  }
  .hud-training {
    left: 3%;
  }
  .hud-loss {
    right: 3%;
    width: 132px;
  }
  .hud-data {
    bottom: 26%;
    width: 138px;
  }
  .data-log {
    font-size: 6px;
  }
  .data-log p > span {
    font-size: 5px;
  }
  .scene-nav {
    width: calc(100% - 22px);
    gap: 7px;
  }
  .nav-titlebar {
    padding: 0 4px;
    gap: 3px;
  }
  .nav-lights {
    font-size: 7px;
    gap: 2px;
  }
  .nav-body {
    padding: 6px 4px 12px;
  }
  .nav-body strong {
    font-size: 14px;
  }
  .nav-body small {
    font-size: 8px;
  }
}
@media (max-height: 550px) and (orientation: landscape) {
  .hero-title-space h1 {
    font-size: 40px;
  }
  .hero-title-space p {
    margin-top: 4px;
    font-size: 12px;
  }
  .hud-training {
    left: 3%;
    top: calc(50% - 100px);
  }
  .hud-loss {
    right: 3%;
    top: calc(50% - 100px);
  }
  .hud-compute {
    left: 7%;
    bottom: 112px;
  }
  .hud-data {
    right: 3%;
    bottom: 112px;
  }
  .scene-nav {
    width: min(610px, calc(100% - 40px));
    bottom: 14px;
    height: 82px;
    gap: 8px;
  }
  .nav-body svg,
  .nav-arrow {
    display: none;
  }
  .nav-body {
    justify-content: center;
    text-align: center;
    padding: 6px;
  }
  .nav-body strong {
    font-size: 16px;
    display: block;
    min-height: 0;
  }
  .nav-body small {
    font-size: 9px;
  }
  .nav-titlebar {
    font-size: 6px;
    padding: 0 6px;
    gap: 4px;
  }
  .nav-lights {
    font-size: 9px;
    gap: 3px;
  }
}
@media (min-width: 701px) and (max-width: 1100px) and (min-height: 551px) {
  .furnace-3d .hud-training {
    left: 12%;
    top: 50%;
  }
  .furnace-3d .hud-compute {
    left: 36%;
    top: 8%;
  }
  .furnace-3d .hero-title-space h1 {
    font-size: 56px;
  }
  .furnace-3d .hero-title-space p {
    max-width: 230px;
    font-size: 16px;
  }
}
@media (max-width: 700px) {
  .furnace-3d .hero-title-space h1 {
    font-size: 40px;
  }
  .furnace-3d .hero-kicker {
    top: -24px;
    padding-left: 14px;
    font-size: 8px;
    letter-spacing: 1px;
  }
  .furnace-3d .scene::before {
    inset: 12px;
  }
  .furnace-3d .hero-title-space p {
    max-width: 160px;
    font-size: 14px;
    line-height: 1.4;
  }
  .tag-pill::after {
    width: 26px;
  }
  .tag-pill > span {
    left: 21px;
    bottom: 15px;
    font-size: 10px;
    letter-spacing: 0.5px;
  }
  .tag-fire::after {
    width: 81px;
    transform: rotate(-117deg);
  }
  .tag-fire > span {
    bottom: 72px;
  }
  .furnace-3d .hud-training {
    left: 4%;
    top: max(32%, 232px);
  }
  .furnace-3d .hud-loss {
    right: auto;
    left: 4%;
    top: auto;
    bottom: 146px;
  }
  .furnace-3d .hud-compute {
    left: auto;
    right: 4%;
    top: max(32%, 232px);
    bottom: auto;
  }
  .furnace-3d .hud-data {
    right: 4%;
    bottom: 146px;
  }
}
@media (max-height: 550px) and (orientation: landscape) {
  .furnace-3d .hero-title-space h1 {
    font-size: 40px;
  }
  .furnace-3d .hud-training {
    left: 32%;
    top: 31%;
  }
  .furnace-3d .hud-loss {
    left: auto;
    right: 4%;
    top: 25%;
    bottom: auto;
  }
  .furnace-3d .hud-data {
    bottom: 112px;
  }
  .furnace-3d .hud-compute {
    left: 46%;
    right: auto;
    top: 6%;
    bottom: auto;
  }
}
@media (max-width: 360px) {
  .tag-fire::after {
    width: 107px;
    transform: rotate(-110deg);
  }
  .tag-fire > span {
    bottom: 100px;
  }
  .tag-pill::after {
    width: 10px;
  }
  .tag-pill > span {
    left: 8px;
    bottom: 6px;
    padding-inline: 6px;
    font-size: 9px;
    letter-spacing: 0;
  }
}
/* Phone layouts share one furnace scale across both renderers, including touch landscape. */
@media (max-width: 700px),
  (max-width: 1000px) and (max-height: 550px) and (pointer: coarse) {
  :root {
    --furnace-scale: 0.88;
  }
  .console-dock {
    display: none;
  }
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  .nav-window {
    transform: translateY(var(--window-offset, 0px));
  }
}