:root {
  color-scheme: dark;
  --sp-bg: #070b10;
  --sp-bg-deep: #020509;
  --sp-panel: rgba(12, 23, 32, .95);
  --sp-panel-soft: rgba(17, 34, 46, .76);
  --sp-line: rgba(174, 210, 226, .23);
  --sp-line-strong: rgba(174, 210, 226, .62);
  --sp-text: #f2f7f8;
  --sp-muted: rgba(242, 247, 248, .74);
  --sp-dim: rgba(242, 247, 248, .52);
  --sp-cyan: #91e4ef;
  --sp-cyan-bright: #d4fbff;
  --sp-amber: #ffd078;
  --sp-orange: #ff9f67;
  --sp-green: #8fe7bd;
  --sp-red: #ff8d8d;
}

*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }
html { min-width: 0; overflow-x: hidden; background: var(--sp-bg); }
body.shadow-page {
  min-width: 0;
  margin: 0;
  overflow-x: hidden;
  color: var(--sp-text);
  background:
    radial-gradient(circle at 50% -10%, rgba(55, 128, 151, .25), transparent 38rem),
    linear-gradient(rgba(174, 210, 226, .035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(174, 210, 226, .035) 1px, transparent 1px),
    var(--sp-bg-deep);
  background-size: auto, 32px 32px, 32px 32px, auto;
  font-family: "SFMono-Regular", "Cascadia Code", "Roboto Mono", "Noto Sans Mono", "Yu Gothic UI", monospace;
  line-height: 1.55;
}
#shadowApp button, #shadowApp input, #shadowApp select, #shadowApp output { font: inherit; }
#shadowApp button, #shadowApp input[type="range"], #shadowApp select { accent-color: var(--sp-cyan); }
#shadowApp button {
  min-height: 44px;
  padding: 10px 14px;
  border: 1px solid var(--sp-line-strong);
  border-radius: 0;
  color: var(--sp-text);
  background: rgba(52, 86, 105, .28);
  cursor: pointer;
}
#shadowApp button:hover, #shadowApp button:focus-visible { border-color: var(--sp-cyan-bright); background: rgba(82, 144, 163, .34); }
#shadowApp button:focus-visible, #shadowApp input:focus-visible, #shadowApp select:focus-visible, #shadowApp a:focus-visible { outline: 3px solid rgba(145, 228, 239, .6); outline-offset: 3px; }
#shadowApp .button-primary { color: #061017; border-color: var(--sp-cyan); background: var(--sp-cyan); font-weight: 800; }
#shadowApp .button-primary:hover, #shadowApp .button-primary:focus-visible { color: #021015; background: var(--sp-cyan-bright); }
#shadowApp .skip-link {
  position: fixed; z-index: 10; top: 8px; left: 8px; padding: 8px 12px;
  color: #051016; background: var(--sp-cyan-bright);
  font: 700 .82rem/1.3 "Yu Gothic", Meiryo, system-ui, sans-serif;
  text-decoration: none; transform: translateY(-160%);
}
#shadowApp .skip-link:focus, #shadowApp .skip-link:focus-visible { transform: translateY(0); }
#shadowApp.site-frame { width: min(1480px, calc(100% - 32px)); margin: 0 auto; padding: 22px 0 42px; }
#shadowApp .site-header { padding: 4px 0 20px; border-bottom: 1px solid var(--sp-line); }
#shadowApp .prototype-breadcrumb { display: flex; flex-wrap: wrap; align-items: center; gap: 4px 14px; color: var(--sp-dim); font-size: .78rem; }
#shadowApp .prototype-breadcrumb a, #shadowApp .section-nav a, #shadowApp .site-footer a, #shadowApp .noscript-notice a {
  color: inherit; text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: .22em;
}
#shadowApp .prototype-breadcrumb a:hover, #shadowApp .section-nav a:hover, #shadowApp .site-footer a:hover, #shadowApp .noscript-notice a:hover { color: var(--sp-cyan-bright); }
#shadowApp .header-row { display: flex; align-items: center; justify-content: space-between; gap: 20px; margin-top: 18px; }
#shadowApp .brand { display: inline-flex; min-width: 0; min-height: 44px; align-items: center; gap: 12px; color: var(--sp-text); text-decoration: none; }
#shadowApp .brand-mark { display: grid; flex: 0 0 auto; place-items: center; width: 44px; height: 44px; border: 1px solid var(--sp-line-strong); color: var(--sp-amber); font-size: .78rem; letter-spacing: .05em; }
#shadowApp .brand-copy { display: grid; gap: 2px; min-width: 0; }
#shadowApp .brand-copy strong { overflow-wrap: anywhere; font-size: .98rem; letter-spacing: .07em; }
#shadowApp .brand-copy small { color: var(--sp-dim); font-size: .67rem; letter-spacing: .1em; }
#shadowApp .section-nav { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 8px 18px; color: var(--sp-muted); font-size: .72rem; letter-spacing: .12em; }
#shadowApp main { min-width: 0; }
#shadowApp .hero { display: grid; grid-template-columns: minmax(0, 1fr) minmax(260px, 360px); gap: 28px; align-items: end; padding: 40px 0 28px; }
#shadowApp .hero-copy, #shadowApp .hero-lead, #shadowApp .status-rack { min-width: 0; }
#shadowApp .kicker { margin: 0 0 10px; color: var(--sp-cyan); font-size: .71rem; letter-spacing: .16em; line-height: 1.4; }
#shadowApp h1, #shadowApp h2, #shadowApp h3, #shadowApp p { overflow-wrap: anywhere; }
#shadowApp h1 { margin: 0; color: var(--sp-text); font-family: "Yu Gothic", Meiryo, system-ui, sans-serif; font-size: clamp(2rem, 5vw, 4.7rem); line-height: 1.08; letter-spacing: .03em; }
#shadowApp .hero-subtitle { margin: 12px 0 0; color: var(--sp-dim); font-size: clamp(.72rem, 1.4vw, .94rem); letter-spacing: .12em; }
#shadowApp .hero-lead { display: grid; gap: 7px; max-width: 880px; margin: 22px 0 0; color: var(--sp-muted); font-family: "Yu Gothic", Meiryo, system-ui, sans-serif; font-size: .96rem; }
#shadowApp .hero-lead span + span { color: var(--sp-dim); font-size: .82rem; }
#shadowApp .status-rack { display: grid; gap: 5px; padding: 16px; border-left: 2px solid var(--sp-cyan); background: var(--sp-panel-soft); }
#shadowApp .status-label { color: var(--sp-dim); font-size: .68rem; letter-spacing: .13em; }
#shadowApp #runtimeStatus { color: var(--sp-amber); font-size: .88rem; letter-spacing: .06em; }
#shadowApp #interactionStatus { min-height: 2.9em; color: var(--sp-muted); font-family: "Yu Gothic", Meiryo, system-ui, sans-serif; font-size: .78rem; }
#shadowApp .observatory-layout { display: grid; grid-template-columns: minmax(0, 1.58fr) minmax(280px, .72fr); gap: 20px; align-items: start; }
#shadowApp .observation-panel, #shadowApp .control-panel, #shadowApp .note-card, #shadowApp .limits-section { min-width: 0; border: 1px solid var(--sp-line); background: var(--sp-panel); }
#shadowApp .observation-panel, #shadowApp .control-panel { padding: 20px; }
#shadowApp .panel-heading { display: flex; justify-content: space-between; gap: 16px; align-items: start; margin-bottom: 16px; }
#shadowApp .panel-heading h2 { margin: 0; font-family: "Yu Gothic", Meiryo, system-ui, sans-serif; font-size: 1.22rem; line-height: 1.3; }
#shadowApp .compact-heading { margin-bottom: 18px; }
#shadowApp .panel-index, #shadowApp .stage-readout { flex: 0 0 auto; color: var(--sp-dim); font-size: .68rem; letter-spacing: .09em; text-align: right; }
#shadowApp .stage-readout { display: grid; gap: 4px; }
#shadowApp .stage-readout strong { color: var(--sp-cyan); font-size: .72rem; font-weight: 500; }
#shadowApp .stage { position: relative; min-width: 0; overflow: hidden; border: 1px solid var(--sp-line); background: #050b10; }
#shadowApp #columnCanvas { display: block; width: 100%; height: auto; min-height: 280px; aspect-ratio: 960 / 620; background: #050b10; touch-action: none; }
#shadowApp .stage-hud { position: absolute; right: 12px; bottom: 10px; left: 12px; display: flex; justify-content: space-between; gap: 10px; color: rgba(212, 251, 255, .57); font-size: .63rem; letter-spacing: .08em; pointer-events: none; }
#shadowApp .noscript-notice { min-height: 280px; padding: 28px; color: var(--sp-muted); font-family: "Yu Gothic", Meiryo, system-ui, sans-serif; }
#shadowApp .noscript-notice strong { color: var(--sp-amber); }
#shadowApp .fallback { margin: 0; padding: 18px; color: var(--sp-amber); background: rgba(116, 66, 29, .28); font-family: "Yu Gothic", Meiryo, system-ui, sans-serif; }
#shadowApp .stage-legend { display: flex; flex-wrap: wrap; gap: 8px 18px; margin: 14px 0 0; color: var(--sp-muted); font-size: .72rem; }
#shadowApp .stage-legend span { display: inline-flex; align-items: center; gap: 7px; }
#shadowApp .legend-swatch { display: inline-block; width: 22px; height: 0; border-top: 2px solid var(--sp-cyan); }
#shadowApp .legend-axis { border-top-style: dashed; border-top-color: var(--sp-dim); }
#shadowApp .legend-column { border-top-color: var(--sp-amber); box-shadow: 0 0 5px rgba(255, 208, 120, .6); }
#shadowApp .legend-load { position: relative; border-top-color: var(--sp-orange); }
#shadowApp .legend-load::after { position: absolute; right: 0; bottom: -5px; content: "▼"; color: var(--sp-orange); font-size: .65rem; }
#shadowApp .legend-critical { border-top-width: 4px; border-top-color: var(--sp-green); }
#shadowApp .canvas-help, #shadowApp .control-hint, #shadowApp .small-note { color: var(--sp-dim); font-family: "Yu Gothic", Meiryo, system-ui, sans-serif; }
#shadowApp .canvas-help { margin: 15px 0 0; font-size: .8rem; }
#shadowApp .canvas-help strong { color: var(--sp-cyan); font-family: inherit; }
#shadowApp .control-group + .control-group { margin-top: 24px; padding-top: 20px; border-top: 1px solid var(--sp-line); }
#shadowApp .control-group h3 { margin: 0 0 14px; color: var(--sp-cyan); font-size: .72rem; letter-spacing: .13em; }
#shadowApp .select-label, #shadowApp .range-label { display: flex; justify-content: space-between; gap: 12px; color: var(--sp-muted); font-size: .73rem; }
#shadowApp .select-label { display: block; margin-bottom: 8px; }
#shadowApp select { width: 100%; min-height: 44px; padding: 8px 10px; border: 1px solid var(--sp-line-strong); border-radius: 0; color: var(--sp-text); background: #0b1720; }
#shadowApp option { color: #f2f7f8; background: #0b1720; }
#shadowApp .range-label { align-items: baseline; margin-top: 14px; }
#shadowApp .range-label output { flex: 0 0 auto; color: var(--sp-amber); font-size: .76rem; font-variant-numeric: tabular-nums; text-align: right; }
#shadowApp input[type="range"] { display: block; width: 100%; min-height: 32px; margin: 3px 0 0; }
#shadowApp .range-endpoints { display: flex; justify-content: space-between; gap: 8px; color: var(--sp-dim); font-size: .62rem; }
#shadowApp .control-hint { margin: 14px 0 0; font-size: .73rem; }
#shadowApp .action-grid { display: grid; grid-template-columns: 1fr; gap: 8px; margin-top: 22px; }
#shadowApp .readout-list { display: grid; gap: 0; margin: 22px 0 0; border-top: 1px solid var(--sp-line); }
#shadowApp .readout-list div { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: 12px; padding: 9px 0; border-bottom: 1px solid rgba(174, 210, 226, .12); }
#shadowApp .readout-list dt { color: var(--sp-dim); font-size: .67rem; }
#shadowApp .readout-list dd { min-width: 0; margin: 0; color: var(--sp-text); font-size: .75rem; font-variant-numeric: tabular-nums; overflow-wrap: anywhere; text-align: right; }
#shadowApp #statusCritical { color: var(--sp-amber); }
#shadowApp .notes { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; margin-top: 20px; }
#shadowApp .note-card { padding: 20px; }
#shadowApp .note-card h2 { margin: 0 0 12px; font-family: "Yu Gothic", Meiryo, system-ui, sans-serif; font-size: 1.12rem; line-height: 1.35; }
#shadowApp .note-card p { margin: 10px 0 0; color: var(--sp-muted); font-family: "Yu Gothic", Meiryo, system-ui, sans-serif; font-size: .86rem; }
#shadowApp .note-emphasis { color: var(--sp-amber) !important; }
#shadowApp .formula { display: grid; gap: 8px; margin: 14px 0 0; padding: 14px; border: 1px solid var(--sp-line); background: rgba(8, 16, 23, .78); }
#shadowApp .formula code { color: var(--sp-cyan-bright); font: .78rem/1.45 "SFMono-Regular", "Cascadia Code", "Roboto Mono", monospace; overflow-wrap: anywhere; }
#shadowApp .observation-steps { display: grid; gap: 9px; margin: 14px 0 0; padding-left: 1.35rem; color: var(--sp-muted); font-family: "Yu Gothic", Meiryo, system-ui, sans-serif; font-size: .84rem; }
#shadowApp .observation-steps li::marker { color: var(--sp-amber); }
#shadowApp .small-note { font-size: .72rem !important; }
#shadowApp .limits-section { margin-top: 20px; padding: 22px 20px; }
#shadowApp .limits-section h2 { margin: 0; font-family: "Yu Gothic", Meiryo, system-ui, sans-serif; font-size: 1.35rem; line-height: 1.3; }
#shadowApp .limits-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 22px; margin-top: 14px; }
#shadowApp .limits-grid p { margin: 0; color: var(--sp-muted); font-family: "Yu Gothic", Meiryo, system-ui, sans-serif; font-size: .84rem; }
#shadowApp .site-footer { display: flex; justify-content: space-between; gap: 18px; margin-top: 30px; padding-top: 16px; border-top: 1px solid var(--sp-line); color: var(--sp-dim); font-size: .68rem; letter-spacing: .08em; }
#shadowApp .site-footer p { display: flex; flex-wrap: wrap; gap: 8px 14px; margin: 0; }

@media (max-width: 980px) {
  #shadowApp .hero { grid-template-columns: 1fr; gap: 20px; }
  #shadowApp .observatory-layout { grid-template-columns: 1fr; }
  #shadowApp .control-panel { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
  #shadowApp .control-panel .panel-heading, #shadowApp .control-panel .action-grid, #shadowApp .control-panel .readout-list { grid-column: 1 / -1; }
  #shadowApp .control-group + .control-group { margin-top: 0; padding-top: 0; border-top: 0; }
}
@media (max-width: 700px) {
  #shadowApp.site-frame { width: min(100% - 20px, 1480px); padding-top: 14px; }
  #shadowApp .header-row { align-items: flex-start; flex-direction: column; gap: 15px; }
  #shadowApp .section-nav { justify-content: flex-start; }
  #shadowApp .hero { padding: 28px 0 20px; }
  #shadowApp .observation-panel, #shadowApp .control-panel, #shadowApp .note-card, #shadowApp .limits-section { padding: 15px; }
  #shadowApp .control-panel, #shadowApp .notes, #shadowApp .limits-grid { grid-template-columns: 1fr; }
  #shadowApp .control-panel .panel-heading, #shadowApp .control-panel .action-grid, #shadowApp .control-panel .readout-list { grid-column: auto; }
  #shadowApp .control-group + .control-group { margin-top: 20px; padding-top: 17px; border-top: 1px solid var(--sp-line); }
  #shadowApp .stage-hud { display: grid; gap: 2px; }
  #shadowApp .site-footer { display: grid; gap: 12px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; scroll-behavior: auto !important; transition-duration: .001ms !important; }
}