/* SYSART / LAYERED CORE — HTML + CSS only.
   Scoped under .sysart-art. No fonts, images, libraries, or network requests.
   Change data-theme to light / dark / mono; use --sysart-accent to customize.
   With several instances, give each motion checkbox a unique id. */
.sysart-art {
  --sysart-accent: #c7ed72;
  --sa-ink: #263329;
  --sa-muted: #737e71;
  --sa-line: rgba(69, 86, 61, .2);
  --sa-faint: rgba(74, 97, 56, .09);
  --sa-plate: rgba(246, 249, 237, .94);
  --sa-plate-edge: #d9e1ce;
  --sa-plate-line: rgba(99, 119, 80, .19);
  --sa-bottom: #d6eba6;
  --sa-bottom-edge: #a5bd78;
  --sa-shadow: rgba(67, 83, 32, .17);
  --sa-core-ink: #f5fbe9;
  --sa-core: #28372b;
  --sa-chip: #394b3a;
  --sa-glow: rgba(182, 222, 108, .24);
  position: relative;
  display: block;
  width: 100%;
  max-width: 720px;
  aspect-ratio: 1 / 1;
  margin: 0;
  color: var(--sa-ink);
  font-family: Arial, 'Noto Sans CJK JP', 'Hiragino Kaku Gothic ProN', 'Yu Gothic', sans-serif;
  font-size: 12px;
  isolation: isolate;
}
.sysart-art[data-theme="dark"] {
  --sysart-accent: #cef58b;
  --sa-ink: #e9efdc;
  --sa-muted: #a3b093;
  --sa-line: rgba(198, 221, 169, .24);
  --sa-faint: rgba(198, 221, 169, .07);
  --sa-plate: rgba(83, 100, 66, .97);
  --sa-plate-edge: #34482a;
  --sa-plate-line: rgba(216, 240, 183, .18);
  --sa-bottom: #9cbd64;
  --sa-bottom-edge: #577336;
  --sa-shadow: rgba(0, 0, 0, .44);
  --sa-core: #202d21;
  --sa-chip: #364b33;
  --sa-glow: rgba(173, 219, 97, .12);
}
.sysart-art[data-theme="mono"] {
  --sysart-accent: #deded8;
  --sa-ink: #292a27;
  --sa-muted: #7b7e76;
  --sa-line: rgba(50, 52, 46, .22);
  --sa-faint: rgba(50, 52, 46, .065);
  --sa-plate: rgba(247, 247, 242, .97);
  --sa-plate-edge: #d3d4cc;
  --sa-plate-line: rgba(80, 81, 70, .15);
  --sa-bottom: #cecec4;
  --sa-bottom-edge: #9b9c92;
  --sa-shadow: rgba(50, 51, 40, .15);
  --sa-core: #30322d;
  --sa-chip: #484b43;
  --sa-glow: rgba(160, 165, 147, .16);
}
.sysart-art *, .sysart-art *::before, .sysart-art *::after { box-sizing: border-box; }
.sysart-art[data-theme="mono"] .sysart-art__canvas { filter: grayscale(1); }
.sysart-art__canvas {
  position: absolute;
  inset: 0;
  overflow: hidden;
  border-radius: 4px;
  container-type: inline-size;
}
.sysart-art__canvas::before {
  content: '';
  position: absolute;
  inset: 13%;
  border-radius: 50%;
  background: radial-gradient(ellipse, var(--sa-glow), transparent 69%);
  transform: scale(1.2);
}
.sysart-art__grid {
  position: absolute;
  inset: 7%;
  opacity: .62;
  background-image: radial-gradient(var(--sa-line) .7px, transparent .9px);
  background-size: 24px 24px;
  -webkit-mask-image: radial-gradient(ellipse, #000 25%, transparent 71%);
  mask-image: radial-gradient(ellipse, #000 25%, transparent 71%);
}
.sysart-art__halo {
  position: absolute;
  left: 10%; top: 11%; width: 80%; height: 80%;
  border: 1px solid var(--sa-faint);
  border-radius: 50%;
}
.sysart-art__halo::before, .sysart-art__halo::after {
  content: ''; position: absolute;
  border: 1px solid var(--sa-faint); border-radius: 50%;
}
.sysart-art__halo::before { inset: 10%; }
.sysart-art__halo::after { inset: 22%; }
.sysart-art__orbit {
  position: absolute;
  inset: 0;
  border: 1px solid transparent;
  border-top-color: var(--sa-line);
  border-radius: 50%;
  animation: sysart-orbit 44s linear infinite;
}
.sysart-art__orbit::before {
  content: ''; position: absolute;
  left: 14.15%; top: 14.15%; width: 6px; height: 6px;
  margin: -3px; border-radius: 50%;
  background: var(--sa-ink);
  box-shadow: 0 0 0 5px var(--sa-faint);
}
.sysart-art__cross {
  position: absolute; width: 11px; height: 11px;
  background: linear-gradient(var(--sa-line), var(--sa-line)) center / 1px 100% no-repeat,
              linear-gradient(var(--sa-line), var(--sa-line)) center / 100% 1px no-repeat;
}
.sysart-art__cross--a { top: 13%; left: 10%; }
.sysart-art__cross--b { bottom: 14%; right: 9%; }
.sysart-art__cross--c { top: 49%; right: 4%; }
.sysart-art__base-shadow {
  position: absolute;
  left: 24%; top: 66%; width: 52%; height: 14%;
  background: radial-gradient(ellipse, var(--sa-shadow), transparent 70%);
  transform: rotate(-7deg);
  animation: sysart-shadow 9s ease-in-out infinite;
}
.sysart-art__perspective {
  position: absolute;
  inset: 0;
  perspective: 1100px;
  perspective-origin: 50% 43%;
}
.sysart-art__scene {
  position: absolute;
  left: 28.5%; top: 29%; width: 43%; height: 43%;
  transform-style: preserve-3d;
  transform: rotateX(56deg) rotateZ(-38deg);
  animation: sysart-breathe 9s ease-in-out infinite;
}
.sysart-art__plate {
  position: absolute;
  inset: 0;
  border-radius: 8%;
  transform-style: preserve-3d;
}
.sysart-art__plate::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: var(--sa-plate-edge);
  transform: translateZ(-7px);
  box-shadow: 8px 15px 28px var(--sa-shadow);
}
.sysart-art__plate--system {
  transform: translateZ(124px);
  animation: sysart-top 9s ease-in-out infinite;
}
.sysart-art__plate--ai {
  transform: translateZ(7px);
}
.sysart-art__plate--cloud {
  transform: translateZ(-111px);
  animation: sysart-bottom 9s ease-in-out infinite;
}
.sysart-art__plate--ai::before { background: #152319; }
.sysart-art__plate--cloud::before { background: var(--sa-bottom-edge); }
.sysart-art__face {
  position: absolute;
  inset: 0;
  overflow: hidden;
  border: 1px solid var(--sa-plate-line);
  border-radius: inherit;
  background: var(--sa-plate);
  box-shadow: inset 0 0 0 1px rgba(255,255,255,.22);
}
.sysart-art__plate--system .sysart-art__face {
  background:
    linear-gradient(var(--sa-plate-line) 1px, transparent 1px) 50% 50% / 12.5% 12.5%,
    linear-gradient(90deg, var(--sa-plate-line) 1px, transparent 1px) 50% 50% / 12.5% 12.5%,
    var(--sa-plate);
}
.sysart-art__plate--ai .sysart-art__face {
  background: var(--sa-core);
  border-color: rgba(233,251,200,.2);
}
.sysart-art__plate--cloud .sysart-art__face {
  background: var(--sa-bottom);
  border-color: rgba(82,100,46,.22);
}
.sysart-art__rim { position: absolute; inset: 7%; border: 1px solid var(--sa-plate-line); border-radius: 4%; }
.sysart-art__plate--ai .sysart-art__rim { border-color: rgba(224,246,190,.14); }
.sysart-art__screw {
  position: absolute; width: 3px; height: 3px; border-radius: 50%;
  background: var(--sa-muted); opacity: .65;
}
.sysart-art__screw:nth-of-type(1) { left: 5%; top: 5%; }
.sysart-art__screw:nth-of-type(2) { right: 5%; top: 5%; }
.sysart-art__screw:nth-of-type(3) { right: 5%; bottom: 5%; }
.sysart-art__screw:nth-of-type(4) { left: 5%; bottom: 5%; }
.sysart-art__plate-number {
  position: absolute; top: 12%; left: 12%; color: var(--sa-muted);
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 11px; font-size: clamp(7px, 1.6cqw, 12px); letter-spacing: .08em;
}
.sysart-art__plate-word {
  position: absolute; bottom: 11%; right: 12%; color: var(--sa-muted);
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 10px; font-size: clamp(6px, 1.35cqw, 10px); letter-spacing: .18em;
}
.sysart-art__plate--ai .sysart-art__plate-number,
.sysart-art__plate--ai .sysart-art__plate-word { color: #bccdb1; }
.sysart-art__plate--cloud .sysart-art__plate-number,
.sysart-art__plate--cloud .sysart-art__plate-word { color: #495f33; }
.sysart-art__code {
  position: absolute; inset: 32%;
  display: flex; align-items: center; justify-content: center;
  gap: 20%;
}
.sysart-art__bracket {
  width: 27%; height: 58%;
  border-top: 5px solid var(--sa-ink);
  border-left: 5px solid var(--sa-ink);
  border-radius: 2px;
  transform: rotate(-45deg);
}
.sysart-art__bracket:last-child { transform: rotate(135deg); }
.sysart-art__slash {
  height: 78%; width: 5px; border-radius: 3px;
  background: var(--sa-ink); transform: rotate(16deg);
}
.sysart-art__trace {
  position: absolute;
  border: 1px solid rgba(221,245,183,.22);
  border-left: 0;
  border-bottom: 0;
  border-radius: 0 7px 0 0;
}
.sysart-art__trace--a { left: 11%; top: 22%; width: 39%; height: 30%; }
.sysart-art__trace--b { right: 12%; bottom: 18%; width: 39%; height: 31%; transform: rotate(180deg); }
.sysart-art__trace--c { left: 18%; top: 12%; width: 39%; height: 32%; }
.sysart-art__trace--d { right: 20%; bottom: 10%; width: 25%; height: 35%; transform: rotate(180deg); }
.sysart-art__trace::after {
  content: ''; position: absolute; width: 4px; height: 4px;
  left: -2px; top: -2px; border-radius: 50%;
  background: var(--sysart-accent);
}
.sysart-art__chip {
  position: absolute; left: 25%; top: 54%; width: 30%; height: 30%;
  border: 1px solid rgba(220,246,177,.44);
  border-radius: 12%;
  background: var(--sa-chip);
  box-shadow: 0 0 0 8px rgba(204,238,155,.05), inset 0 0 18px rgba(206,248,141,.09);
  display: flex; align-items: center; justify-content: center;
  gap: 8%;
}
.sysart-art__chip i {
  width: 10%; height: 28%; border-radius: 5px;
  background: var(--sysart-accent);
  animation: sysart-signal 3.6s ease-in-out infinite;
}
.sysart-art__chip i:nth-child(2) { height: 50%; animation-delay: -.4s; }
.sysart-art__chip i:nth-child(3) { height: 67%; animation-delay: -.8s; }
.sysart-art__chip i:nth-child(4) { height: 38%; animation-delay: -1.2s; }
.sysart-art__bus {
  position: absolute;
  left: 16%; top: 26%; width: 68%; height: 48%;
  border: 1px solid rgba(53,81,24,.24);
  border-radius: 50%;
}
.sysart-art__bus::before, .sysart-art__bus::after {
  content: ''; position: absolute;
  border: 1px solid rgba(53,81,24,.19); border-radius: 50%;
}
.sysart-art__bus::before { inset: 15% -8%; }
.sysart-art__bus::after { inset: -25% 24%; }
.sysart-art__server {
  position: absolute; top: 61%; left: 27%; width: 24%; height: 24%;
  display: flex; flex-direction: column; gap: 12%;
}
.sysart-art__server i {
  height: 26%; width: 100%; border: 1px solid #52663a; border-radius: 2px;
  background: rgba(255,255,255,.27); position: relative;
}
.sysart-art__server i::after {
  content: ''; position: absolute; width: 3px; height: 3px;
  right: 12%; top: calc(50% - 1.5px); background: #4b6136; border-radius: 50%;
}
.sysart-art__pin {
  position: absolute; width: 6px; height: 6px;
  background: #526b34; border: 1px solid var(--sa-bottom); border-radius: 50%;
}
.sysart-art__pin--a { left: 16%; top: 49%; }
.sysart-art__pin--b { right: 16%; top: 49%; }
.sysart-art__pin--c { left: 49%; top: 17%; }
.sysart-art__pin--d { left: 49%; bottom: 15%; }
.sysart-art__axis {
  position: absolute; left: 49.7%; top: 49.7%; width: 1px; height: 190px;
  background: linear-gradient(transparent, var(--sysart-accent), transparent);
  transform-origin: top center; transform: translateZ(-80px) rotateX(90deg);
}
.sysart-art__tag {
  position: absolute;
  z-index: 2;
  display: flex; flex-direction: column; gap: 5px;
  padding: 10px 0;
  line-height: 1.2;
}
.sysart-art__tag span {
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  color: var(--sa-muted); font-size: 9px; letter-spacing: .14em;
}
.sysart-art__tag strong { font-size: 11px; font-weight: 500; letter-spacing: .14em; }
.sysart-art__tag::before {
  content: ''; position: absolute;
  width: 45px; height: 1px; top: 50%; background: var(--sa-line);
}
.sysart-art__tag::after {
  content: ''; position: absolute; top: calc(50% - 2px);
  width: 4px; height: 4px; border-radius: 50%; background: var(--sa-muted);
}
.sysart-art__tag--system { top: 22%; right: 7%; }
.sysart-art__tag--system::before { right: calc(100% + 10px); }
.sysart-art__tag--system::after { right: calc(100% + 55px); }
.sysart-art__tag--ai { top: 47%; left: 5%; }
.sysart-art__tag--ai::before { left: calc(100% + 10px); }
.sysart-art__tag--ai::after { left: calc(100% + 55px); }
.sysart-art__tag--cloud { right: 6%; bottom: 16%; }
.sysart-art__tag--cloud::before { right: calc(100% + 10px); }
.sysart-art__tag--cloud::after { right: calc(100% + 55px); }
.sysart-art__coordinate {
  position: absolute; left: 8%; bottom: 5%;
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 8px; color: var(--sa-muted); letter-spacing: .16em;
}
.sysart-art__motion-input, .sysart-art__caption {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}
.sysart-art__motion-label {
  position: absolute; right: 6%; bottom: 3%; z-index: 5;
  display: flex; align-items: center; justify-content: center; gap: 7px;
  min-width: 100px; min-height: 40px; padding: 8px 10px;
  border: 1px solid var(--sa-line); border-radius: 24px;
  color: var(--sa-ink); cursor: pointer;
  font-size: 10px; line-height: 1.4;
  -webkit-tap-highlight-color: transparent;
}
.sysart-art__motion-label:hover { background: var(--sa-faint); }
.sysart-art__motion-input:focus-visible + .sysart-art__motion-label { outline: 2px solid var(--sa-ink); outline-offset: 4px; }
.sysart-art__motion-icon { width: 8px; height: 9px; border-left: 2px solid currentColor; border-right: 2px solid currentColor; }
.sysart-art__play-text { display: none; }
.sysart-art__motion-input:checked + .sysart-art__motion-label .sysart-art__pause-text { display: none; }
.sysart-art__motion-input:checked + .sysart-art__motion-label .sysart-art__play-text { display: inline; }
.sysart-art__motion-input:checked + .sysart-art__motion-label .sysart-art__motion-icon {
  width: 0; height: 0; border: 5px solid transparent; border-right: 0; border-left: 7px solid currentColor;
}
.sysart-art__motion-input:checked ~ .sysart-art__canvas *,
.sysart-art__motion-input:checked ~ .sysart-art__canvas *::before,
.sysart-art__motion-input:checked ~ .sysart-art__canvas *::after { animation-play-state: paused !important; }
.sysart-art[data-motion="off"] .sysart-art__canvas *,
.sysart-art[data-motion="off"] .sysart-art__canvas *::before,
.sysart-art[data-motion="off"] .sysart-art__canvas *::after { animation: none !important; }
.sysart-art[data-motion="off"] .sysart-art__motion-input,
.sysart-art[data-motion="off"] .sysart-art__motion-label { display: none; }
@keyframes sysart-breathe {
  0%, 100% { transform: translateY(0) rotateX(56deg) rotateZ(-38deg); }
  50% { transform: translateY(-9px) rotateX(56deg) rotateZ(-35deg); }
}
@keyframes sysart-top { 0%, 100% { transform: translateZ(124px); } 50% { transform: translateZ(137px); } }
@keyframes sysart-bottom { 0%, 100% { transform: translateZ(-111px); } 50% { transform: translateZ(-122px); } }
@keyframes sysart-orbit { to { transform: rotate(360deg); } }
@keyframes sysart-shadow { 0%, 100% { opacity: .85; transform: scale(1) rotate(-7deg); } 50% { opacity: .5; transform: scale(.91) rotate(-7deg); } }
@keyframes sysart-signal { 0%, 100% { opacity: .45; transform: scaleY(.75); } 50% { opacity: 1; transform: scaleY(1); } }
/* Scale the 3D depth together with the component on compact layouts. */
@container (max-width: 420px) {
  .sysart-art__perspective { perspective: 780px; }
  .sysart-art__scene { left: 26%; top: 28%; width: 48%; height: 48%; }
  .sysart-art__plate--system { transform: translateZ(62px); animation-name: sysart-top-small; }
  .sysart-art__plate--cloud { transform: translateZ(-53px); animation-name: sysart-bottom-small; }
  .sysart-art__tag strong { font-size: 8px; }
  .sysart-art__tag span { font-size: 7px; }
  .sysart-art__tag::before { width: 19px; }
  .sysart-art__tag--system { top: 17%; right: 5%; }
  .sysart-art__tag--system::after, .sysart-art__tag--cloud::after { right: calc(100% + 29px); }
  .sysart-art__tag--ai { left: 3%; }
  .sysart-art__tag--ai::after { left: calc(100% + 29px); }
  .sysart-art__tag--cloud { right: 3%; bottom: 16%; }
  .sysart-art__bracket { border-width: 3px; }
  .sysart-art__slash { width: 3px; }
  .sysart-art__motion-label { min-width: 94px; min-height: 36px; font-size: 9px; }
  .sysart-art__coordinate { left: 5%; font-size: 7px; }
}
@keyframes sysart-top-small { 0%, 100% { transform: translateZ(62px); } 50% { transform: translateZ(69px); } }
@keyframes sysart-bottom-small { 0%, 100% { transform: translateZ(-53px); } 50% { transform: translateZ(-60px); } }
@media (prefers-reduced-motion: reduce) {
  .sysart-art *, .sysart-art *::before, .sysart-art *::after { animation: none !important; }
  .sysart-art__motion-input, .sysart-art__motion-label { display: none; }
}