/*! fermi-sim.css v1.3.6 · Fermi simulation design system
 * Tokens follow the main app (study-tools-v2 frontend/src/design-system).
 * One file: tokens + canonical .fsim-* classes + the temporary override layer.
 * Load: see README.md. Source: design-system/fermi-sim-css/ · do not edit this build. */
@layer fermi.contrast, fermi.tokens, fermi.base, fermi.components, fermi.override;

@layer fermi.tokens {
/* ── _tokens/colors.css ── */
/* ════════════════════════════════════════════════════════════════════
 * COLOUR · the semantic palette
 * ════════════════════════════════════════════════════════════════════
 * Same names AND values as the main app's design system
 * (study-tools-v2 · frontend/src/design-system/_tokens/colors.css), so a
 * sim and the page around it speak one vocabulary. Only the roles the sims
 * use are declared; add a role here (with its main-app value) before using it.
 *
 * Named for the role, never the appearance. Light values sit at :root; a
 * future dark theme overrides these same names at :root[data-theme="dark"].
 * ════════════════════════════════════════════════════════════════════ */
:root {
  /* Action · royal blue acts */
  --color-accent:        #4169e1;
  --color-accent-hover:  #224fd7;
  --color-accent-active: #1c42b4;
  --color-accent-subtle: #edf1fc;
  --color-accent-border: rgba(65, 105, 225, 0.30);
  --color-text-on-accent: #ffffff;

  /* Ground and surface */
  --color-bg:         #f4f9fd;
  --color-bg-subtle:  #eef4f9;
  --color-bg-muted:   #dfe3f7;
  --color-bg-inverse: #0a1929;
  --color-surface:    #ffffff;

  /* Text · a legible ramp */
  --color-text:        #0e2a48;
  --color-text-muted:  #3a4a5a;
  --color-text-subtle: #4f6275;
  --color-text-faint:  #5b6f82;

  /* Border */
  --color-border:        #e2ebf3;
  --color-border-strong: #d3e0ea;

  /* Status · bright value = fill/border, -text = ink */
  --color-success:      #16a34a;
  --color-success-text: #14532d;
  --color-danger:       #e5484d;
  --color-danger-text:  #7a271a;
  --color-warning:      #ffb27c;
  --color-warning-text: #8a5a20;

  /* Focus */
  --color-focus-ring: #4169e1;
}

/* ── _tokens/typography.css ── */
/* TYPOGRAPHY · same names and values as the main app (_tokens/typography.css).
 * Inter is loaded by the sim's head block (Google Fonts link); offline, the
 * system sans in the stack takes over. JetBrains Mono is NOT loaded on purpose:
 * loading it changed sidebar row heights (2026-10-05); the stack falls back. */
:root {
  --font-sans: 'Inter Variable', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --leading-none: 1.08;
  --leading-tight: 1.25;
  --leading-normal: 1.55;
  --text-xs: 0.75rem;
  --text-sm: 0.8125rem;
  --text-base: 0.9375rem;
}

/* ── _tokens/spacing.css ── */
/* SPACING · derived from one base, main-app scale (_tokens/spacing.css). */
:root {
  --space-base: 0.25rem;
  --space-1: var(--space-base);
  --space-2: calc(var(--space-base) * 2);
  --space-3: calc(var(--space-base) * 3);
  --space-4: calc(var(--space-base) * 4);
  --space-5: calc(var(--space-base) * 6);
  --space-6: calc(var(--space-base) * 8);
  --control-height: 2.5rem;
}

/* ── _tokens/radius.css ── */
/* RADIUS · named for what it wraps; main-app scale (_tokens/radius.css). */
:root {
  --radius-sm:   8px;
  --radius-md:  11px;
  --radius-lg:  16px;
  --radius-full: 999px;
}

/* ── _tokens/elevation.css ── */
/* ELEVATION · main-app values (_tokens/elevation.css). Navy-tinted, never black. */
:root {
  --shadow-sm: 0 1px 2px rgba(14,42,72,0.05);
  --shadow-md: 0 2px 6px rgba(14,42,72,0.06), 0 1px 2px rgba(14,42,72,0.04);
  --shadow-lg: 0 10px 28px -14px rgba(14,42,72,0.14), 0 2px 6px rgba(14,42,72,0.05);
  --shadow-xl: 0 20px 48px -20px rgba(14,42,72,0.18), 0 4px 12px rgba(14,42,72,0.06);
}

/* ── _tokens/motion.css ── */
/* MOTION · main-app values (_tokens/motion.css). One easing curve. */
:root {
  --duration-instant: 80ms;
  --duration-fast: 180ms;
  --duration-base: 320ms;
  --ease-out: cubic-bezier(0.2, 0.7, 0.2, 1);
}

/* ── _tokens/sim.css ── */
/* ════════════════════════════════════════════════════════════════════
 * SIM · feature-scoped tokens for the simulation page chrome
 * ════════════════════════════════════════════════════════════════════
 * main-app guidelines §6 "Feature-scoped tokens": a feature that needs
 * values the root palette has no role for declares them in a block scoped
 * to a selector it owns. A simulation is a whole document (it runs in its
 * own page / iframe), so the scope is :root of that document.
 *
 * Every value is the locked Horizon "A" look (LOCKED-A.md, 2026-10-05).
 * Where A differs from a main-app token with the same role, the A value
 * lives HERE under a --fsim-* name and the main-app token keeps its value;
 * TOKENS.md lists each divergence for the frontend team to reconcile.
 * ════════════════════════════════════════════════════════════════════ */
:root {
  /* ── Type for Horizon cards in TODAY'S sims ──────────────────────────
     Every live sim defines its own --font-sans (DM Sans) in unlayered CSS,
     which beats this sheet's layered --font-sans. The override layer
     therefore reads this name instead. Once Track R removes the sims' own
     --font-sans, this becomes var(--font-sans) and can be retired. */
  --fsim-font-ui: 'Inter Variable', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

  /* ── Top bar · matches the sidebar ground (2026-10-09, owner-approved mock) ── */
  --fsim-topbar-bg: #eaf1fa;                      /* = --fsim-sidebar-bg */
  --fsim-topbar-menu-bg: #dde7f5;                 /* <option> rows of a top-bar select; = --fsim-control-bg */
  --fsim-topbar-edge: rgba(65, 105, 225, 0.35);   /* = --fsim-accent-border */
  --fsim-topbar-shadow: inset 0 -1px 0 rgba(65, 105, 225, 0.35), 0 2px 10px -6px rgba(14, 42, 72, 0.18);
  --fsim-topbar-text: #0e2a48;                    /* = --color-text */
  --fsim-topbar-text-muted: #3a5068;              /* labels, secondary ink */
  --fsim-topbar-text-faint: #7487a0;
  --fsim-topbar-text-quiet: #4a5f78;              /* unselected segment buttons */
  --fsim-topbar-control-text: #17324e;
  --fsim-topbar-control-bg: rgba(14, 42, 72, 0.06);
  --fsim-topbar-control-bg-hover: rgba(14, 42, 72, 0.12);
  --fsim-topbar-control-border: rgba(14, 42, 72, 0.16);
  --fsim-topbar-segment-bg: rgba(14, 42, 72, 0.04);
  --fsim-topbar-selected-bg: rgba(65, 105, 225, 0.18);
  --fsim-topbar-selected-border: rgba(65, 105, 225, 0.55);
  --fsim-topbar-line: rgba(14, 42, 72, 0.14);
  --fsim-topbar-accent: #4169e1;                  /* = --color-accent */
  --fsim-topbar-focus: #4169e1;

  /* ── Ask AI Tutor · the one white pill in the top bar ──────────────── */
  --fsim-tutor-icon: #6f80dc;
  --fsim-tutor-icon-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2.1' stroke-linejoin='round'%3E%3Cpath d='M10 5Q10.8 12.2 18 13Q10.8 13.8 10 21Q9.2 13.8 2 13Q9.2 12.2 10 5Z'/%3E%3Cpath d='M19 1.8Q19.4 4.6 22.2 5Q19.4 5.4 19 8.2Q18.6 5.4 15.8 5Q18.6 4.6 19 1.8Z'/%3E%3C/svg%3E");

  /* ── Play · the only royal-blue button ─────────────────────────────── */
  --fsim-play-border: #6f8ff0;

  /* ── Stage (the simulation window) ─────────────────────────────────── */
  --fsim-stage-hint-bg: rgba(255, 255, 255, 0.92);

  /* ── Sidebar · one light-blue ground ───────────────────────────────── */
  --fsim-sidebar-bg: #eaf1fa;
  --fsim-sidebar-line: #b0c3dd;                   /* box outlines (raised 2026-10-05) */
  --fsim-control-bg: #dde7f5;                     /* buttons, selects, option rows */
  --fsim-control-bg-hover: #d2def1;
  --fsim-selected-bg: #e3eafb;                    /* main app: --color-accent-subtle #edf1fc */
  --fsim-accent-border: rgba(65, 105, 225, 0.35); /* main app: --color-accent-border at .30 */
  --fsim-track: #d5e0f3;                          /* inactive dots (NOT the slider track; see --fsim-slider-track) */

  /* ── Slider · unified control design (2026-10-10, owner-approved) ──── */
  --fsim-slider-track: #efefef;                   /* unfilled portion; filled portion uses --color-accent */
  --fsim-slider-track-h: 8px;
  --fsim-slider-thumb: 16px;                      /* = the sims' own thumbs before 1.3.4 (owner, 2026-10-11) */
  --fsim-mask-on: #000;                           /* mask alpha only, never a visible colour */
  --fsim-mask-off: transparent;

  /* ── Hide tab · always-navy, independent of the top bar's own light/dark
         state (2026-10-10: the top bar went light, this tab did not) ──── */
  --fsim-hide-tab-bg: #1a2461;
  --fsim-hide-tab-bg-hover: #24307a;
  --fsim-hide-tab-text: #ffffff;
  --fsim-hide-tab-shadow: -3px 0 8px -4px rgba(14, 42, 72, 0.18);

  /* ── Answer feedback (Guided Inquiry) ──────────────────────────────── */
  --fsim-ok-text: #15803d;
  --fsim-ok-bg: #e9f7ee;
  --fsim-ok-border: #86efac;
  --fsim-ok-border-soft: #bbf7d0;
  --fsim-bad-text: #b42318;
  --fsim-bad-bg: #fdeceb;
  --fsim-bad-border: #fecdca;
  --fsim-near-text: #7a2e0e;                      /* "not quite" prediction */
  --fsim-near-bg: #fff6e5;
  --fsim-near-border: #fedf89;
  --fsim-eval-bg: rgba(255, 255, 255, 0.55);

  /* ── The Physics sheet ─────────────────────────────────────────────── */
  --fsim-scrim: rgba(14, 42, 72, 0.38);
  --fsim-sheet-tint: #f1f5fd;
  --fsim-sheet-head-radius: 12px 12px 0 0;
  --fsim-sheet-head-edge: inset 0 -1px 0 rgba(99, 132, 230, 0.6);
  --fsim-sheet-close-bg: rgba(255, 255, 255, 0.08);
  --fsim-sheet-close-bg-hover: rgba(255, 255, 255, 0.16);
  --fsim-sheet-close-border: rgba(255, 255, 255, 0.25);

  /* ── Landing (read by the guide engine, tools/flow_patch.py) ───────────
     direct = no start board: the sim opens ready to explore, with ONE tip at
     the Simulation guide button (5 s). Any other value, or an older sheet
     without this token, keeps the start board. Owner + manager, 2026-10-06. */
  --fsim-landing: direct;

  /* ── Simulation guide (landing board, tour card, hint, play tip) ───── */
  --fsim-guide-backdrop: rgba(244, 249, 253, 0.55);
  --fsim-guide-backdrop-filter: blur(10px) saturate(110%);
  --fsim-guide-line-secondary: #7c96ea;
  --fsim-guide-voice-off: #94a3b8;
  --fsim-choice-shadow: 0 1px 2px rgba(14, 42, 72, 0.08);
  --fsim-choice-shadow-hover: 0 4px 12px -4px rgba(65, 105, 225, 0.35);
  --fsim-choice-focus: 0 0 0 3px rgba(65, 105, 225, 0.35);
  --fsim-choice-primary-shadow: 0 6px 16px -6px rgba(65, 105, 225, 0.55);
  --fsim-playtip-shadow: 0 0 0 1px #d3e0ea, 0 10px 24px -10px rgba(14, 42, 72, 0.3), 0 2px 6px rgba(14, 42, 72, 0.08);
  --fsim-playtip-notch-shadow: drop-shadow(0 -1px 0 #d3e0ea);
}

/* ── _tokens/frame.css ── */
/* GENERATED by tools/gen_sim_tokens.py from the live fleet probe. Do not edit; edit MAP there. */
/* Fleet defaults for the frame components (the most common value today). */
:root {
  --fsim-topbar-pad-t: 8px;
  --fsim-topbar-pad-r: 18px;
  --fsim-topbar-pad-b: 8px;
  --fsim-topbar-pad-l: 18px;
  --fsim-topbar-col-gap: 12px;
  --fsim-topbar-row-gap: 6px;
  --fsim-topbar-title-fs: 18px;
  --fsim-topbar-title-fw: 600;
  --fsim-topbar-title-ls: 0.5px;
  --fsim-topbar-title-lh: normal;
  --fsim-topbar-title-ff: DMSansUser, "DM Sans", -apple-system, "system-ui", "Segoe UI", Roboto, sans-serif;
  --fsim-topbar-button-pad-t: 0px;
  --fsim-topbar-button-pad-r: 12px;
  --fsim-topbar-button-pad-b: 0px;
  --fsim-topbar-button-pad-l: 12px;
  --fsim-topbar-button-fs: 13px;
  --fsim-topbar-button-fw: 400;
  --fsim-topbar-button-ls: normal;
  --fsim-topbar-button-r-tl: 6px;
  --fsim-topbar-button-r-tr: 6px;
  --fsim-topbar-button-r-br: 6px;
  --fsim-topbar-button-r-bl: 6px;
  --fsim-button-play-pad-t: 0px;
  --fsim-button-play-pad-r: 12px;
  --fsim-button-play-pad-b: 0px;
  --fsim-button-play-pad-l: 12px;
  --fsim-button-play-fs: 13px;
  --fsim-button-play-fw: 400;
  --fsim-button-play-ls: normal;
  --fsim-button-play-r-tl: 6px;
  --fsim-button-play-r-tr: 6px;
  --fsim-button-play-r-br: 6px;
  --fsim-button-play-r-bl: 6px;
  --fsim-button-tutor-pad-t: 0px;
  --fsim-button-tutor-pad-r: 14px;
  --fsim-button-tutor-pad-b: 0px;
  --fsim-button-tutor-pad-l: 14px;
  --fsim-button-tutor-fs: 13px;
  --fsim-button-tutor-fw: 600;
  --fsim-topbar-select-pad-t: 6px;
  --fsim-topbar-select-pad-r: 8px;
  --fsim-topbar-select-pad-b: 6px;
  --fsim-topbar-select-pad-l: 8px;
  --fsim-topbar-select-fs: 13px;
  --fsim-topbar-select-r-tl: 6px;
  --fsim-topbar-select-r-tr: 6px;
  --fsim-topbar-select-r-br: 6px;
  --fsim-topbar-select-r-bl: 6px;
  --fsim-sidebar-pad-t: 18px;
  --fsim-sidebar-pad-r: 18px;
  --fsim-sidebar-pad-b: 18px;
  --fsim-sidebar-pad-l: 18px;
  --fsim-sidebar-row-gap: 16px;
  --fsim-sidebar-col-gap: 16px;
  --fsim-sidebar-head-pad-t: 0px;
  --fsim-sidebar-head-pad-r: 0px;
  --fsim-sidebar-head-pad-b: 0px;
  --fsim-sidebar-head-pad-l: 0px;
  --fsim-sidebar-head-fs: 16px;
  --fsim-sidebar-head-fw: 400;
  --fsim-sidebar-head-ls: normal;
  --fsim-sidebar-head-tt: none;
  --fsim-control-box-pad-t: 12px;
  --fsim-control-box-pad-r: 12px;
  --fsim-control-box-pad-b: 12px;
  --fsim-control-box-pad-l: 12px;
  --fsim-control-box-r-tl: 5px;
  --fsim-control-box-r-tr: 5px;
  --fsim-control-box-r-br: 5px;
  --fsim-control-box-r-bl: 5px;
  --fsim-control-box-row-gap: normal;
  --fsim-control-label-fs: 13px;
  --fsim-control-label-fw: 600;
  --fsim-control-label-ls: normal;
  --fsim-control-label-ff: DMSansUser, "DM Sans", -apple-system, "system-ui", "Segoe UI", Roboto, sans-serif;
  --fsim-control-value-fs: 15px;
  --fsim-control-value-fw: 600;
  --fsim-control-value-ff: JetBrainsMonoNums, "JetBrains Mono", ui-monospace, monospace;
  --fsim-readout-row-pad-t: 0px;
  --fsim-readout-row-pad-r: 0px;
  --fsim-readout-row-pad-b: 6px;
  --fsim-readout-row-pad-l: 0px;
  --fsim-readout-row-fs: 14px;
  --fsim-readout-label-fs: 14px;
  --fsim-readout-label-fw: 600;
  --fsim-readout-label-ff: DMSansUser, "DM Sans", -apple-system, "system-ui", "Segoe UI", Roboto, sans-serif;
  --fsim-readout-value-fs: 14px;
  --fsim-readout-value-fw: 600;
  --fsim-readout-value-ff: JetBrainsMonoNums, "JetBrains Mono", ui-monospace, monospace;
  --fsim-stage-pad-t: 0px;
  --fsim-stage-pad-r: 0px;
  --fsim-stage-pad-b: 0px;
  --fsim-stage-pad-l: 0px;
  --fsim-stage-r-tl: 12px;
  --fsim-stage-r-tr: 12px;
  --fsim-stage-r-br: 12px;
  --fsim-stage-r-bl: 12px;
  --fsim-legend-item-pad-t: 0px;
  --fsim-legend-item-pad-r: 0px;
  --fsim-legend-item-pad-b: 0px;
  --fsim-legend-item-pad-l: 0px;
  --fsim-legend-item-fs: 11px;
  --fsim-legend-item-col-gap: 6px;
  --fsim-topbar-pad-t-ph: 8px;
  --fsim-topbar-pad-r-ph: 14px;
  --fsim-topbar-pad-b-ph: 8px;
  --fsim-topbar-pad-l-ph: 14px;
  --fsim-topbar-col-gap-ph: 12px;
  --fsim-topbar-row-gap-ph: 6px;
  --fsim-topbar-title-fs-ph: 18px;
  --fsim-topbar-title-fw-ph: 600;
  --fsim-topbar-title-ls-ph: 0.5px;
  --fsim-topbar-title-lh-ph: normal;
  --fsim-topbar-title-ff-ph: DMSansUser, "DM Sans", -apple-system, "system-ui", "Segoe UI", Roboto, sans-serif;
  --fsim-topbar-button-pad-t-ph: 0px;
  --fsim-topbar-button-pad-r-ph: 12px;
  --fsim-topbar-button-pad-b-ph: 0px;
  --fsim-topbar-button-pad-l-ph: 12px;
  --fsim-topbar-button-fs-ph: 13px;
  --fsim-topbar-button-fw-ph: 400;
  --fsim-topbar-button-ls-ph: normal;
  --fsim-topbar-button-r-tl-ph: 6px;
  --fsim-topbar-button-r-tr-ph: 6px;
  --fsim-topbar-button-r-br-ph: 6px;
  --fsim-topbar-button-r-bl-ph: 6px;
  --fsim-button-play-pad-t-ph: 0px;
  --fsim-button-play-pad-r-ph: 12px;
  --fsim-button-play-pad-b-ph: 0px;
  --fsim-button-play-pad-l-ph: 12px;
  --fsim-button-play-fs-ph: 13px;
  --fsim-button-play-fw-ph: 400;
  --fsim-button-play-ls-ph: normal;
  --fsim-button-play-r-tl-ph: 6px;
  --fsim-button-play-r-tr-ph: 6px;
  --fsim-button-play-r-br-ph: 6px;
  --fsim-button-play-r-bl-ph: 6px;
  --fsim-button-tutor-pad-t-ph: 0px;
  --fsim-button-tutor-pad-r-ph: 10px;
  --fsim-button-tutor-pad-b-ph: 0px;
  --fsim-button-tutor-pad-l-ph: 10px;
  --fsim-button-tutor-fs-ph: 13px;
  --fsim-button-tutor-fw-ph: 600;
  --fsim-topbar-select-pad-t-ph: 6px;
  --fsim-topbar-select-pad-r-ph: 8px;
  --fsim-topbar-select-pad-b-ph: 6px;
  --fsim-topbar-select-pad-l-ph: 8px;
  --fsim-topbar-select-fs-ph: 13px;
  --fsim-topbar-select-r-tl-ph: 6px;
  --fsim-topbar-select-r-tr-ph: 6px;
  --fsim-topbar-select-r-br-ph: 6px;
  --fsim-topbar-select-r-bl-ph: 6px;
  --fsim-sidebar-pad-t-ph: 18px;
  --fsim-sidebar-pad-r-ph: 18px;
  --fsim-sidebar-pad-b-ph: 18px;
  --fsim-sidebar-pad-l-ph: 18px;
  --fsim-sidebar-row-gap-ph: 16px;
  --fsim-sidebar-col-gap-ph: 16px;
  --fsim-sidebar-head-pad-t-ph: 0px;
  --fsim-sidebar-head-pad-r-ph: 0px;
  --fsim-sidebar-head-pad-b-ph: 0px;
  --fsim-sidebar-head-pad-l-ph: 0px;
  --fsim-sidebar-head-fs-ph: 16px;
  --fsim-sidebar-head-fw-ph: 400;
  --fsim-sidebar-head-ls-ph: normal;
  --fsim-sidebar-head-tt-ph: none;
  --fsim-control-box-pad-t-ph: 12px;
  --fsim-control-box-pad-r-ph: 12px;
  --fsim-control-box-pad-b-ph: 12px;
  --fsim-control-box-pad-l-ph: 12px;
  --fsim-control-box-r-tl-ph: 5px;
  --fsim-control-box-r-tr-ph: 5px;
  --fsim-control-box-r-br-ph: 5px;
  --fsim-control-box-r-bl-ph: 5px;
  --fsim-control-box-row-gap-ph: normal;
  --fsim-control-label-fs-ph: 13px;
  --fsim-control-label-fw-ph: 600;
  --fsim-control-label-ls-ph: normal;
  --fsim-control-label-ff-ph: DMSansUser, "DM Sans", -apple-system, "system-ui", "Segoe UI", Roboto, sans-serif;
  --fsim-control-value-fs-ph: 15px;
  --fsim-control-value-fw-ph: 600;
  --fsim-control-value-ff-ph: JetBrainsMonoNums, "JetBrains Mono", ui-monospace, monospace;
  --fsim-readout-row-pad-t-ph: 0px;
  --fsim-readout-row-pad-r-ph: 0px;
  --fsim-readout-row-pad-b-ph: 6px;
  --fsim-readout-row-pad-l-ph: 0px;
  --fsim-readout-row-fs-ph: 14px;
  --fsim-readout-label-fs-ph: 14px;
  --fsim-readout-label-fw-ph: 600;
  --fsim-readout-label-ff-ph: DMSansUser, "DM Sans", -apple-system, "system-ui", "Segoe UI", Roboto, sans-serif;
  --fsim-readout-value-fs-ph: 14px;
  --fsim-readout-value-fw-ph: 600;
  --fsim-readout-value-ff-ph: JetBrainsMonoNums, "JetBrains Mono", ui-monospace, monospace;
  --fsim-stage-pad-t-ph: 0px;
  --fsim-stage-pad-r-ph: 0px;
  --fsim-stage-pad-b-ph: 0px;
  --fsim-stage-pad-l-ph: 0px;
  --fsim-stage-r-tl-ph: 12px;
  --fsim-stage-r-tr-ph: 12px;
  --fsim-stage-r-br-ph: 12px;
  --fsim-stage-r-bl-ph: 12px;
  --fsim-legend-item-pad-t-ph: 0px;
  --fsim-legend-item-pad-r-ph: 0px;
  --fsim-legend-item-pad-b-ph: 0px;
  --fsim-legend-item-pad-l-ph: 0px;
  --fsim-legend-item-fs-ph: 11px;
  --fsim-legend-item-col-gap-ph: 6px;
}

/* ── _generated/sim-overrides.css ── */
/* GENERATED by tools/gen_sim_tokens.py from the live fleet probe. Do not edit; edit MAP there. */
/* Per-sim values that differ from the fleet default: today's look, exactly. Normalising a sim =
   deleting its line(s) here. */
html[data-fsim-id="cm-cm-brachistochrone-race-polished"]{--fsim-topbar-row-gap:12px;--fsim-sidebar-head-pad-r:2px;--fsim-sidebar-head-pad-l:2px;--fsim-topbar-row-gap-ph:12px;--fsim-sidebar-head-pad-r-ph:2px;--fsim-sidebar-head-pad-l-ph:2px}
html[data-fsim-id="cm-cm-phase-plane-polished"]{--fsim-topbar-row-gap:12px;--fsim-topbar-title-ff:DMSansUser, "DM Sans", "Helvetica Neue", Arial, sans-serif;--fsim-topbar-row-gap-ph:12px;--fsim-topbar-title-ff-ph:DMSansUser, "DM Sans", "Helvetica Neue", Arial, sans-serif}
html[data-fsim-id="cm-cm-spinning-book-polished"]{--fsim-topbar-row-gap:12px;--fsim-topbar-row-gap-ph:12px}
html[data-fsim-id="cm-collisions"]{--fsim-topbar-pad-t:0px;--fsim-topbar-pad-b:0px;--fsim-control-box-row-gap:8px;--fsim-topbar-pad-t-ph:0px;--fsim-topbar-pad-r-ph:10px;--fsim-topbar-pad-b-ph:0px;--fsim-topbar-pad-l-ph:10px;--fsim-topbar-col-gap-ph:8px;--fsim-topbar-row-gap-ph:8px;--fsim-topbar-button-pad-r-ph:8px;--fsim-topbar-button-pad-l-ph:8px;--fsim-button-play-pad-r-ph:8px;--fsim-button-play-pad-l-ph:8px;--fsim-button-play-fs-ph:12px;--fsim-topbar-select-pad-r-ph:4px;--fsim-topbar-select-pad-l-ph:4px;--fsim-topbar-select-fs-ph:12px;--fsim-control-box-row-gap-ph:8px}
html[data-fsim-id="cm-galperins-billiard"]{--fsim-topbar-pad-t:0px;--fsim-topbar-pad-b:0px;--fsim-topbar-pad-t-ph:0px;--fsim-topbar-pad-r-ph:10px;--fsim-topbar-pad-b-ph:0px;--fsim-topbar-pad-l-ph:10px;--fsim-topbar-col-gap-ph:8px;--fsim-topbar-row-gap-ph:8px;--fsim-topbar-button-pad-r-ph:8px;--fsim-topbar-button-pad-l-ph:8px;--fsim-button-play-pad-r-ph:8px;--fsim-button-play-pad-l-ph:8px;--fsim-button-play-fs-ph:12px;--fsim-topbar-select-pad-r-ph:4px;--fsim-topbar-select-pad-l-ph:4px;--fsim-topbar-select-fs-ph:12px}
html[data-fsim-id="cm-l17-the-damped-ho"]{--fsim-readout-row-pad-b:0px;--fsim-readout-row-pad-b-ph:0px}
html[data-fsim-id="cm-l30-coriolis-on-a-rotating-sphere"]{--fsim-legend-item-fs:12px;--fsim-legend-item-fs-ph:12px}
html[data-fsim-id="cm-l30-the-coriolis-force"]{--fsim-readout-row-pad-t:6px;--fsim-readout-row-pad-t-ph:6px}
html[data-fsim-id="cm-l36-the-energy-of-the-orbit-new"]{--fsim-topbar-pad-t:0px;--fsim-topbar-pad-b:0px;--fsim-topbar-row-gap:12px;--fsim-topbar-row-gap-ph:12px}
html[data-fsim-id="cm-l6-the-harmonic-oscillator"]{--fsim-readout-row-pad-b:0px;--fsim-readout-row-pad-b-ph:0px}
html[data-fsim-id="condensed-matter-cm-bloch-oscillations"]{--fsim-topbar-row-gap:12px;--fsim-readout-value-fs:15px;--fsim-topbar-row-gap-ph:12px;--fsim-readout-value-fs-ph:15px}
html[data-fsim-id="condensed-matter-cm-crystal-diffraction-2d-polished"]{--fsim-topbar-row-gap:12px;--fsim-readout-value-fs:15px;--fsim-topbar-row-gap-ph:12px;--fsim-readout-value-fs-ph:15px}
html[data-fsim-id="condensed-matter-cm-kronig-penney-bands-polished"]{--fsim-topbar-row-gap:12px;--fsim-readout-row-pad-t:2px;--fsim-readout-value-fs:15px;--fsim-topbar-row-gap-ph:12px;--fsim-readout-row-pad-t-ph:2px}
html[data-fsim-id="condensed-matter-cm-phonon-diatomic-chain-polished"]{--fsim-topbar-row-gap:12px;--fsim-readout-value-fs:15px;--fsim-topbar-row-gap-ph:12px}
html[data-fsim-id="condensed-matter-cm-superconductor-polished"]{--fsim-topbar-row-gap:12px;--fsim-topbar-row-gap-ph:12px}
html[data-fsim-id="condensed-matter-mc-random-walker-eval-newcontract-polished"]{--fsim-topbar-row-gap:12px;--fsim-topbar-row-gap-ph:12px}
html[data-fsim-id="condensed-matter-qs-rabi-bloch-sphere"]{--fsim-topbar-row-gap:12px;--fsim-topbar-row-gap-ph:12px}
html[data-fsim-id="condensed-matter-sc-ising-order"]{--fsim-topbar-row-gap:12px;--fsim-topbar-row-gap-ph:12px}
html[data-fsim-id="condensed-matter-sm-energy-sharing"]{--fsim-topbar-row-gap:12px;--fsim-readout-row-pad-t:2px;--fsim-readout-value-fs:18px}
html[data-fsim-id="condensed-matter-sm-heat-capacity-steps-eval-newcontract-polished"]{--fsim-topbar-row-gap:12px;--fsim-topbar-row-gap-ph:12px}
html[data-fsim-id="condensed-matter-sm-identical-counting"]{--fsim-topbar-row-gap:12px;--fsim-topbar-row-gap-ph:12px}
html[data-fsim-id="condensed-matter-sm-rubber-band"]{--fsim-topbar-row-gap:12px;--fsim-topbar-row-gap-ph:12px}
html[data-fsim-id="pp-build-a-baryon"]{--fsim-sidebar-head-pad-r:2px;--fsim-sidebar-head-pad-l:2px;--fsim-sidebar-head-pad-r-ph:2px;--fsim-sidebar-head-pad-l-ph:2px}
html[data-fsim-id="pp-dirac-s-sea-of-electrons"]{--fsim-sidebar-head-pad-r:2px;--fsim-sidebar-head-pad-l:2px;--fsim-sidebar-head-pad-r-ph:2px;--fsim-sidebar-head-pad-l-ph:2px}
html[data-fsim-id="pp-exploring-the-standard-model"]{--fsim-sidebar-head-pad-r:2px;--fsim-sidebar-head-pad-l:2px;--fsim-sidebar-head-pad-r-ph:2px;--fsim-sidebar-head-pad-l-ph:2px}
html[data-fsim-id="pp-ma-perturbation-breakdown-opus-5"]{--fsim-topbar-row-gap:12px;--fsim-sidebar-head-pad-r:2px;--fsim-sidebar-head-pad-l:2px;--fsim-topbar-row-gap-ph:12px;--fsim-sidebar-head-pad-r-ph:2px;--fsim-sidebar-head-pad-l-ph:2px}
html[data-fsim-id="pp-navigating-the-eight-fold-way"]{--fsim-sidebar-head-pad-r:2px;--fsim-sidebar-head-pad-l:2px;--fsim-sidebar-head-pad-r-ph:2px;--fsim-sidebar-head-pad-l-ph:2px}
html[data-fsim-id="pp-scale-of-the-universe"]{--fsim-sidebar-head-pad-r:2px;--fsim-sidebar-head-pad-l:2px;--fsim-control-box-pad-r:8px;--fsim-control-box-pad-l:8px;--fsim-control-box-r-tl:8px;--fsim-control-box-r-tr:8px;--fsim-control-box-r-br:8px;--fsim-control-box-r-bl:8px;--fsim-sidebar-head-pad-r-ph:2px;--fsim-sidebar-head-pad-l-ph:2px;--fsim-control-box-pad-r-ph:8px;--fsim-control-box-pad-l-ph:8px;--fsim-control-box-r-tl-ph:8px;--fsim-control-box-r-tr-ph:8px;--fsim-control-box-r-br-ph:8px;--fsim-control-box-r-bl-ph:8px}
html[data-fsim-id="pp-the-wine-bottle-potential-continuous-symmetr"]{--fsim-sidebar-head-pad-r:2px;--fsim-sidebar-head-pad-l:2px;--fsim-sidebar-head-pad-r-ph:2px;--fsim-sidebar-head-pad-l-ph:2px}
html[data-fsim-id="pp-virtual-cloud-chamber"]{--fsim-sidebar-head-pad-r:2px;--fsim-sidebar-head-pad-l:2px;--fsim-sidebar-head-pad-r-ph:2px;--fsim-sidebar-head-pad-l-ph:2px}
html[data-fsim-id="pp-virtual-particle-collider"]{--fsim-sidebar-head-pad-r:2px;--fsim-sidebar-head-pad-l:2px;--fsim-sidebar-head-pad-r-ph:2px;--fsim-sidebar-head-pad-l-ph:2px}
html[data-fsim-id="qm-2d-wavefunction-collapse-measurement"]{--fsim-topbar-pad-t:0px;--fsim-topbar-pad-r:24px;--fsim-topbar-pad-b:0px;--fsim-topbar-pad-l:26px;--fsim-topbar-col-gap:normal;--fsim-topbar-row-gap:normal;--fsim-topbar-title-ff:DMSansUser, "DM Sans", -apple-system, "system-ui", "Segoe UI", sans-serif;--fsim-topbar-button-r-tl:8px;--fsim-topbar-button-r-tr:8px;--fsim-topbar-button-r-br:8px;--fsim-topbar-button-r-bl:8px;--fsim-sidebar-pad-b:22px;--fsim-sidebar-row-gap:normal;--fsim-sidebar-col-gap:normal;--fsim-control-label-fs:14px;--fsim-control-label-fw:500;--fsim-control-label-ff:DMSansUser, "DM Sans", -apple-system, "system-ui", "Segoe UI", sans-serif;--fsim-readout-label-fw:400;--fsim-readout-label-ff:DMSansUser, "DM Sans", -apple-system, "system-ui", "Segoe UI", sans-serif;--fsim-topbar-pad-t-ph:0px;--fsim-topbar-pad-r-ph:24px;--fsim-topbar-pad-b-ph:0px;--fsim-topbar-pad-l-ph:26px;--fsim-topbar-col-gap-ph:normal;--fsim-topbar-row-gap-ph:normal;--fsim-topbar-title-ff-ph:DMSansUser, "DM Sans", -apple-system, "system-ui", "Segoe UI", sans-serif;--fsim-topbar-button-r-tl-ph:8px;--fsim-topbar-button-r-tr-ph:8px;--fsim-topbar-button-r-br-ph:8px;--fsim-topbar-button-r-bl-ph:8px;--fsim-button-tutor-pad-r-ph:11px;--fsim-button-tutor-pad-l-ph:11px;--fsim-sidebar-pad-b-ph:22px;--fsim-sidebar-row-gap-ph:normal;--fsim-sidebar-col-gap-ph:normal;--fsim-control-label-fs-ph:14px;--fsim-control-label-fw-ph:500;--fsim-control-label-ff-ph:DMSansUser, "DM Sans", -apple-system, "system-ui", "Segoe UI", sans-serif;--fsim-readout-label-fw-ph:400;--fsim-readout-label-ff-ph:DMSansUser, "DM Sans", -apple-system, "system-ui", "Segoe UI", sans-serif}
html[data-fsim-id="qm-a-k-vs-k-plot"]{--fsim-topbar-pad-t:0px;--fsim-topbar-pad-r:24px;--fsim-topbar-pad-b:0px;--fsim-topbar-pad-l:24px;--fsim-topbar-row-gap:12px;--fsim-sidebar-pad-t:0px;--fsim-sidebar-pad-r:0px;--fsim-sidebar-pad-b:0px;--fsim-sidebar-pad-l:0px;--fsim-sidebar-row-gap:normal;--fsim-sidebar-col-gap:normal;--fsim-control-label-fs:15px;--fsim-control-label-fw:500;--fsim-control-label-ff:DMSansUser, "DM Sans", sans-serif;--fsim-topbar-pad-t-ph:0px;--fsim-topbar-pad-r-ph:24px;--fsim-topbar-pad-b-ph:0px;--fsim-topbar-pad-l-ph:24px;--fsim-topbar-row-gap-ph:12px;--fsim-button-tutor-pad-r-ph:11px;--fsim-button-tutor-pad-l-ph:11px;--fsim-sidebar-pad-t-ph:0px;--fsim-sidebar-pad-r-ph:0px;--fsim-sidebar-pad-b-ph:0px;--fsim-sidebar-pad-l-ph:0px;--fsim-sidebar-row-gap-ph:normal;--fsim-sidebar-col-gap-ph:normal;--fsim-control-label-fs-ph:15px;--fsim-control-label-fw-ph:500;--fsim-control-label-ff-ph:DMSansUser, "DM Sans", sans-serif}
html[data-fsim-id="qm-bound-states"]{--fsim-topbar-pad-t:0px;--fsim-topbar-pad-r:20px;--fsim-topbar-pad-b:0px;--fsim-topbar-pad-l:20px;--fsim-topbar-col-gap:normal;--fsim-topbar-row-gap:normal;--fsim-topbar-title-ff:DMSansUser, "DM Sans", sans-serif;--fsim-sidebar-pad-t:15px;--fsim-sidebar-pad-r:15px;--fsim-sidebar-pad-b:15px;--fsim-sidebar-pad-l:15px;--fsim-sidebar-row-gap:15px;--fsim-sidebar-col-gap:15px;--fsim-control-label-fs:14px;--fsim-control-label-ff:DMSansUser, "DM Sans", sans-serif;--fsim-topbar-pad-t-ph:0px;--fsim-topbar-pad-r-ph:20px;--fsim-topbar-pad-b-ph:0px;--fsim-topbar-pad-l-ph:20px;--fsim-topbar-col-gap-ph:normal;--fsim-topbar-row-gap-ph:normal;--fsim-topbar-title-ff-ph:DMSansUser, "DM Sans", sans-serif;--fsim-button-tutor-pad-r-ph:11px;--fsim-button-tutor-pad-l-ph:11px;--fsim-sidebar-pad-t-ph:15px;--fsim-sidebar-pad-r-ph:15px;--fsim-sidebar-pad-b-ph:15px;--fsim-sidebar-pad-l-ph:15px;--fsim-sidebar-row-gap-ph:15px;--fsim-sidebar-col-gap-ph:15px;--fsim-control-label-fs-ph:14px;--fsim-control-label-ff-ph:DMSansUser, "DM Sans", sans-serif}
html[data-fsim-id="qm-classical-vs-schrodinger"]{--fsim-topbar-pad-t:14px;--fsim-topbar-pad-r:15px;--fsim-topbar-pad-b:14px;--fsim-topbar-pad-l:15px;--fsim-topbar-col-gap:10px;--fsim-topbar-row-gap:10px;--fsim-button-play-pad-r:8px;--fsim-button-play-pad-l:8px;--fsim-control-label-fs:15px;--fsim-control-label-fw:500;--fsim-control-label-ff:DMSansUser, "DM Sans", sans-serif;--fsim-legend-item-fs:12px;--fsim-legend-item-col-gap:8px;--fsim-topbar-pad-r-ph:10px;--fsim-topbar-pad-l-ph:10px;--fsim-topbar-col-gap-ph:10px;--fsim-topbar-row-gap-ph:10px;--fsim-button-play-pad-r-ph:8px;--fsim-button-play-pad-l-ph:8px;--fsim-button-play-fs-ph:16px;--fsim-button-tutor-pad-r-ph:11px;--fsim-button-tutor-pad-l-ph:11px;--fsim-control-label-fs-ph:15px;--fsim-control-label-fw-ph:500;--fsim-control-label-ff-ph:DMSansUser, "DM Sans", sans-serif;--fsim-legend-item-fs-ph:12px;--fsim-legend-item-col-gap-ph:8px}
html[data-fsim-id="qm-classical-vs-schrodinger-anharmonic"]{--fsim-topbar-pad-t:14px;--fsim-topbar-pad-r:20px;--fsim-topbar-pad-b:14px;--fsim-topbar-pad-l:20px;--fsim-topbar-col-gap:normal;--fsim-topbar-row-gap:normal;--fsim-topbar-title-lh:21.6px;--fsim-topbar-title-ff:DMSansUser, "DM Sans", sans-serif;--fsim-button-play-pad-r:8px;--fsim-button-play-pad-l:8px;--fsim-sidebar-pad-t:20px;--fsim-sidebar-pad-r:20px;--fsim-sidebar-pad-b:20px;--fsim-sidebar-pad-l:20px;--fsim-sidebar-row-gap:20px;--fsim-sidebar-col-gap:20px;--fsim-control-label-fs:14px;--fsim-control-label-ff:DMSansUser, "DM Sans", sans-serif;--fsim-readout-label-fs:11px;--fsim-readout-label-fw:400;--fsim-readout-label-ff:DMSansUser, "DM Sans", sans-serif;--fsim-readout-value-fs:17px;--fsim-legend-item-fs:13px;--fsim-legend-item-col-gap:10px;--fsim-topbar-pad-t-ph:14px;--fsim-topbar-pad-r-ph:20px;--fsim-topbar-pad-b-ph:14px;--fsim-topbar-pad-l-ph:20px;--fsim-topbar-col-gap-ph:normal;--fsim-topbar-row-gap-ph:normal;--fsim-topbar-title-lh-ph:21.6px;--fsim-topbar-title-ff-ph:DMSansUser, "DM Sans", sans-serif;--fsim-button-play-pad-r-ph:8px;--fsim-button-play-pad-l-ph:8px;--fsim-button-play-fs-ph:17px;--fsim-button-tutor-pad-r-ph:11px;--fsim-button-tutor-pad-l-ph:11px;--fsim-sidebar-pad-t-ph:20px;--fsim-sidebar-pad-r-ph:20px;--fsim-sidebar-pad-b-ph:20px;--fsim-sidebar-pad-l-ph:20px;--fsim-sidebar-row-gap-ph:20px;--fsim-sidebar-col-gap-ph:20px;--fsim-control-label-fs-ph:14px;--fsim-control-label-ff-ph:DMSansUser, "DM Sans", sans-serif;--fsim-readout-label-fs-ph:11px;--fsim-readout-label-fw-ph:400;--fsim-readout-label-ff-ph:DMSansUser, "DM Sans", sans-serif;--fsim-readout-value-fs-ph:17px;--fsim-legend-item-fs-ph:13px;--fsim-legend-item-col-gap-ph:10px}
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html[data-fsim-id="sr-l18-s0-tachyon-causality-violation-shell"]{--fsim-topbar-pad-t:0px;--fsim-topbar-pad-b:0px;--fsim-topbar-row-gap:12px;--fsim-control-box-pad-t:14px;--fsim-control-box-pad-r:14px;--fsim-control-box-pad-b:14px;--fsim-control-box-pad-l:14px;--fsim-topbar-row-gap-ph:12px;--fsim-control-box-pad-t-ph:14px;--fsim-control-box-pad-r-ph:14px;--fsim-control-box-pad-b-ph:14px;--fsim-control-box-pad-l-ph:14px}
html[data-fsim-id="sr-l19-s2-e-b-boost-v2-new"]{--fsim-topbar-pad-t:0px;--fsim-topbar-pad-b:0px;--fsim-topbar-row-gap:12px;--fsim-readout-row-pad-t:5px;--fsim-topbar-row-gap-ph:12px;--fsim-readout-row-pad-t-ph:5px}
html[data-fsim-id="sr-l7-s2-airplane-wind-v2"]{--fsim-topbar-pad-t:0px;--fsim-topbar-pad-b:0px;--fsim-topbar-row-gap:12px;--fsim-topbar-row-gap-ph:12px}
}

@layer fermi.components {
/* ── _styles/primitives.css ── */
/* ════════════════════════════════════════════════════════════════════
 * PRIMITIVES · appearance classes any sim may use (layer fermi.components)
 * ════════════════════════════════════════════════════════════════════
 * The class name IS the public API (main-app ADR-0002). BEM, like the main
 * app's .card / .card__title / .card--interactive, with a `fsim-` prefix:
 * existing sim CSS already defines bare .btn / .card / .chip, and an
 * unprefixed name would collide with them during migration.
 *
 * The base class owns the shape; a variant owns colour only. Tokens only:
 * no literal values in this file.
 *
 * In today's sims nothing carries these classes yet (v1 adds no classes to
 * markup), so this file cannot change a live sim. New sims and the Track R
 * refactor adopt them; CLASSES.md maps every legacy selector to its class.
 * ════════════════════════════════════════════════════════════════════ */

/* ── Button ─────────────────────────────────────────────────────────── */
.fsim-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  height: var(--control-height);
  padding: 0 var(--space-4);
  font-family: var(--font-sans);
  font-size: var(--text-base);
  font-weight: var(--font-weight-semibold);
  line-height: 1;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  background: var(--fsim-control-bg);
  color: var(--color-text);
  cursor: pointer;
  white-space: nowrap;
  transition: background var(--duration-fast) var(--ease-out),
              color var(--duration-fast) var(--ease-out),
              border-color var(--duration-fast) var(--ease-out);
}
.fsim-btn:hover { background: var(--fsim-control-bg-hover); }
.fsim-btn:focus-visible { outline: 2px solid var(--color-focus-ring); outline-offset: 2px; }
.fsim-btn:disabled,
.fsim-btn[disabled] { opacity: 0.45; cursor: not-allowed; }
.fsim-btn--sm { height: calc(var(--control-height) - var(--space-2)); padding: 0 var(--space-3); font-size: var(--text-sm); }

/* primary · the ONE loud action per view (Play) */
.fsim-btn--primary { background: var(--color-accent); color: var(--color-text-on-accent); border-color: var(--fsim-play-border); }
.fsim-btn--primary:hover { background: var(--color-accent-hover); }
/* selected · a toggled option (segment, mode, preset) */
.fsim-btn--selected,
.fsim-btn[aria-pressed="true"] { background: var(--fsim-selected-bg); color: var(--color-accent-active); border-color: var(--fsim-accent-border); }
/* ghost · quiet, text-only */
.fsim-btn--ghost { background: transparent; color: var(--color-text-subtle); }
.fsim-btn--ghost:hover { background: var(--color-accent-subtle); color: var(--color-accent); }
/* tutor · the white pill that opens the AI Tutor */
.fsim-btn--tutor { background: var(--color-surface); color: var(--color-text); border-color: var(--color-surface); border-radius: var(--radius-full); }
.fsim-btn--tutor .fsim-btn__icon {
  width: 1em; height: 1em; display: inline-block;
  background-color: var(--fsim-tutor-icon);
  -webkit-mask: var(--fsim-tutor-icon-mask) center/contain no-repeat;
          mask: var(--fsim-tutor-icon-mask) center/contain no-repeat;
}

/* ── Chip · a small toggle or tag ─────────────────────────────────────── */
.fsim-chip {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  border: 1px solid var(--fsim-sidebar-line);
  background: var(--fsim-control-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: var(--text-sm);
}
.fsim-chip--active { background: var(--color-accent); border-color: var(--color-accent); color: var(--color-text-on-accent); }

/* ── Card · a raised surface (sheet sections, guide cards) ────────────── */
.fsim-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  box-shadow: var(--shadow-xl);
  color: var(--color-text);
}
.fsim-card__title { margin: 0; font-family: var(--font-sans); font-weight: var(--font-weight-bold); color: var(--color-text); }
.fsim-card__body { margin: var(--space-2) 0 0; font-family: var(--font-sans); line-height: var(--leading-normal); color: var(--color-text-muted); }

/* ── Feedback · answer states (Guided Inquiry) ────────────────────────── */
.fsim-feedback { border: 1px solid var(--color-border); border-radius: var(--radius-md); padding: var(--space-2) var(--space-3); background: var(--fsim-eval-bg); color: var(--color-text-muted); }
.fsim-feedback--correct { background: var(--fsim-ok-bg); border-color: var(--fsim-ok-border); color: var(--fsim-ok-text); }
.fsim-feedback--wrong { background: var(--fsim-bad-bg); border-color: var(--fsim-bad-border); color: var(--fsim-bad-text); }
.fsim-feedback--near { background: var(--fsim-near-bg); border-color: var(--fsim-near-border); color: var(--fsim-near-text); }

/* ── _styles/chrome.css ── */
/* ════════════════════════════════════════════════════════════════════
 * CHROME · the simulation page frame (layer fermi.components)
 * ════════════════════════════════════════════════════════════════════
 * Canonical classes for the parts every sim shares: top bar, stage
 * (simulation window), sidebar with its panels/controls/readouts, hide
 * tab, Guided Inquiry, and the Physics sheet. Colour, border, radius and
 * type come from tokens; LAYOUT (grid, widths, heights) is deliberately
 * NOT here in v1 — every sim family lays its page out differently, and
 * geometry is the later type/geometry pass.
 *
 * Today these classes match nothing in the live sims (see primitives.css
 * header). The legacy selector each one replaces is listed beside it and in
 * CLASSES.md.
 * ════════════════════════════════════════════════════════════════════ */

/* Page ground · legacy: html, body, #shell, .shell-hero */
.fsim-page { background: var(--color-bg); color: var(--color-text); font-family: var(--font-sans); }

/* ── Top bar · legacy: .shell-header, .top-bar ───────────────────────── */
.fsim-topbar {
  background: var(--fsim-topbar-bg);
  box-shadow: var(--fsim-topbar-shadow);
  border-bottom: 1px solid var(--fsim-topbar-edge);
  color: var(--fsim-topbar-text);
}
.fsim-topbar__title { color: var(--fsim-topbar-text); font-weight: var(--font-weight-semibold); }   /* .shell-title */
.fsim-topbar__label { color: var(--fsim-topbar-text-muted); }                                       /* header <label>, .lbl-speed */
.fsim-topbar__sep { background: var(--fsim-topbar-control-border); }                                /* .shell-sep */
.fsim-topbar .fsim-btn {                                                                            /* .shell-header .shell-btn */
  background: var(--fsim-topbar-control-bg);
  color: var(--fsim-topbar-control-text);
  border-color: var(--fsim-topbar-control-border);
}
.fsim-topbar .fsim-btn:hover { background: var(--fsim-topbar-control-bg-hover); color: var(--fsim-topbar-text); }
.fsim-topbar .fsim-btn--selected,
.fsim-topbar .fsim-btn[aria-pressed="true"] { background: var(--fsim-topbar-selected-bg); color: var(--fsim-topbar-text); border-color: var(--fsim-topbar-selected-border); }
.fsim-topbar .fsim-btn--primary { background: var(--color-accent); color: var(--color-text-on-accent); border-color: var(--fsim-play-border); }   /* #shell-play */
.fsim-topbar .fsim-btn--tutor { background: var(--color-surface); color: var(--color-text); border-color: var(--color-surface); }              /* #ask-euler */
.fsim-topbar :focus-visible { outline-color: var(--fsim-topbar-focus); }

/* ── Stage · legacy: .plot-box, .canvas-frame ────────────────────────── */
.fsim-stage { background: var(--color-surface); }
.fsim-stage__hint { background: var(--fsim-stage-hint-bg); color: var(--color-text); border: 1px solid var(--color-border); }   /* .stage-hint */

/* ── Sidebar · legacy: .shell-aside ──────────────────────────────────── */
.fsim-sidebar { background: var(--fsim-sidebar-bg); border-left: 1px solid var(--fsim-sidebar-line); color: var(--color-text); }
.fsim-panel { border: 1px solid var(--fsim-sidebar-line); border-radius: var(--radius-md); }                                  /* .shell-panel, .ctrl-box */
.fsim-panel__head { color: var(--color-text-faint); font-family: var(--font-mono); font-size: var(--text-xs); letter-spacing: .08em; text-transform: uppercase; }   /* .aside-zone-head, .shell-panel-head */
.fsim-control__label { color: var(--color-text); }                                       /* .ctrl-box-label */
.fsim-control__value { color: var(--color-text); font-family: var(--font-mono); }         /* .slider-val */
.fsim-control__range { color: var(--color-text-faint); }                                  /* .control-range */
.fsim-slider { accent-color: var(--color-accent); }                                       /* input[type=range] */
.fsim-readout__row { color: var(--color-text); }                                          /* .stat-row */
.fsim-readout__label { color: var(--color-text); }                                        /* .stat-label */
.fsim-readout__value { color: var(--color-text); font-family: var(--font-mono); }         /* .stat-value */
.fsim-note { color: var(--color-text-faint); }                                            /* .hint, .note-text */

/* ── Hide tab · legacy: #sb-hide-tab ─────────────────────────────────── */
.fsim-hide-tab { background: var(--fsim-hide-tab-bg); color: var(--fsim-topbar-text); border: 1px solid var(--fsim-hide-tab-bg); box-shadow: var(--fsim-hide-tab-shadow); }
.fsim-hide-tab:hover { background: var(--fsim-hide-tab-bg-hover); border-color: var(--fsim-hide-tab-bg-hover); }

/* ── Guided Inquiry · legacy: .inq-step, .choice, .inq-dot ───────────── */
.fsim-inquiry__title { color: var(--color-text); }
.fsim-inquiry__text { color: var(--color-text-muted); }
.fsim-inquiry__dot { background: var(--fsim-track); border-radius: var(--radius-full); }
.fsim-inquiry__dot--on { background: var(--color-accent); }
.fsim-choice { background: var(--fsim-control-bg); color: var(--color-text); border: 1px solid var(--fsim-sidebar-line); border-radius: var(--radius-sm); }
.fsim-choice:hover { background: var(--fsim-control-bg-hover); }
.fsim-choice--correct { background: var(--fsim-ok-bg); border-color: var(--fsim-ok-border); color: var(--fsim-ok-text); }
.fsim-choice--wrong { background: var(--fsim-bad-bg); border-color: var(--fsim-bad-border); color: var(--fsim-bad-text); }

/* ── The Physics sheet · legacy: #phys-backdrop, .phys-modal, .phys-head ── */
.fsim-sheet-scrim { background: var(--fsim-scrim); }
.fsim-sheet { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-lg); box-shadow: var(--shadow-xl); color: var(--color-text); }
.fsim-sheet__head { background: var(--fsim-topbar-bg); border-radius: var(--fsim-sheet-head-radius); box-shadow: var(--fsim-sheet-head-edge); color: var(--fsim-topbar-text); }
.fsim-sheet__kicker { color: var(--fsim-topbar-text-quiet); }
.fsim-sheet__lede { background: var(--fsim-sheet-tint); color: var(--color-text-muted); border: 1px solid var(--fsim-accent-border); border-left-color: var(--color-accent); }
}

@layer fermi.override {
/* ── override.css ── */
/* ════════════════════════════════════════════════════════════════════
 * OVERRIDE · the Horizon "A" look on today's sim markup (TEMPORARY)
 * ════════════════════════════════════════════════════════════════════
 * Layer: fermi.override. Every declaration is !important ON PURPOSE:
 * for !important the cascade-layer order REVERSES, so a layered !important
 * beats every unlayered !important in the sim's own inline CSS, wherever
 * this sheet is loaded. That is what lets one <link> in <head> restyle a
 * sim that carries 7-14 inline <style> blocks, without editing any of them.
 * (Normal declarations in this layer would lose to all inline sim CSS.)
 *
 * Selectors are the sims' EXISTING classes and ids (.shell-header, .top-bar,
 * .shell-aside, #sb-hide-tab, #phys-backdrop, .gv-*, ...). JS rewrites
 * className ~1,900 times across the fleet, so v1 adds no classes to markup;
 * CLASSES.md maps each legacy selector to its canonical .sim-* class.
 *
 * Colour only, with one exception: the Simulation-guide cards (.gv-*) take
 * the Horizon card type (Inter) and spacing, as locked on 2026-10-05.
 *
 * BURN-DOWN: this file shrinks as Track R moves each sim's inline chrome
 * CSS into fermi.components; it is deleted when it reaches zero.
 * Source of truth for every rule: LOCKED-A.md / skin.A-locked-2026-10-05.
 * ════════════════════════════════════════════════════════════════════ */

/* ── sim variables re-pointed inside chrome surfaces ───────────────────
   NOT !important, deliberately: in the locked look these lose to a sim's own
   definitions on the same element (e.g. its light-theme block for #phys-backdrop)
   and only fill in where the sim defines nothing. Same semantics here: a layered
   normal declaration applies only when no unlayered rule sets that variable. */
.shell-header,.top-bar,html[data-fsim-layout="qm-legacy"] :is(.title-bar,.app-header,.header-bar,header.upper-menu,header.sim-header,div.header,body > header){--text:var(--fsim-topbar-text);--ink-mid:var(--fsim-topbar-text-muted);--ink-mute:var(--fsim-topbar-text-faint);--line:var(--fsim-topbar-line);--accent:var(--fsim-topbar-accent);}
.shell-aside,#sb-sidebar,html[data-fsim-layout="qm-legacy"] :is(aside#rightPanel,.ho-sidebar){
  --bg:var(--fsim-sidebar-bg);--panel:var(--fsim-sidebar-bg);--panel-2:var(--fsim-sidebar-bg);--surface-soft:var(--fsim-sidebar-bg);
  --text:var(--color-text);--ink-mid:var(--color-text-muted);--ink-mute:var(--color-text-faint);--muted:var(--color-text-muted);--line:var(--fsim-sidebar-line);
  --accent:var(--color-accent);--accent-soft:var(--fsim-accent-border);}
#phys-backdrop,#ps-watch,.cg-callout,.cg-nav{
  --bg:var(--color-bg);--panel:var(--color-surface);--panel-2:var(--color-surface);--surface-soft:var(--color-bg-subtle);
  --text:var(--color-text);--ink-mid:var(--color-text-muted);--ink-mute:var(--color-text-faint);--line:var(--color-border);--accent:var(--color-accent);--accent-soft:var(--fsim-accent-border);}
html,body,#shell{background-color:var(--color-bg) !important;}
html body #shell :is(.plot-area,.main-container,.shell-hero,.hero-stack){background-color:var(--color-bg) !important;}

/* v1.1.0: the 12 older QM layouts (<html data-fsim-layout="qm-legacy">, stamped by tools/apply.py --layout qm-legacy)
   name their header, sidebar and Play button differently; the same rules reach them through the scoped lists below.
   v1.1.1: those lists sit inside :where() so they add NO specificity: in v1.1.0 they raised every sidebar rule's weight,
   and the sidebar heading rule out-ranked the Guided Inquiry title rule (card titles turned grey instead of ink). */
/* ── top bar ──────────────────────────────────────────────────────────── */
html body .shell-header,html body .top-bar,html body :is(html[data-fsim-layout="qm-legacy"] :is(.title-bar,.app-header,.header-bar,header.upper-menu,header.sim-header,div.header,body > header)){background:var(--fsim-topbar-bg) !important;
  box-shadow:none !important;border-bottom:1px solid var(--fsim-sidebar-line) !important;backdrop-filter:none !important;color:var(--fsim-topbar-text) !important;}
html body .shell-header .shell-title,html body .top-bar h1,html body :is(html[data-fsim-layout="qm-legacy"] :is(.title-bar,.app-header,.header-bar,header.upper-menu,header.sim-header,div.header,body > header)) :is(h1,h2,.title,.app-title,.sim-title,.title-text,[class*="title"]:not(button)){color:var(--fsim-topbar-text) !important;text-shadow:none !important;}
/* v1.1.2: the sim title in the top bar is white whatever the sim names it (older QM sims call it .top-bar-title,
   .title, .sim-title, .simulation-title, #simTitle or a plain h2; their own light-theme rule painted it dark on navy). */
html body :is(.shell-header,.top-bar,:where(html[data-fsim-layout="qm-legacy"] :is(.title-bar,.app-header,.header-bar,header.upper-menu,header.sim-header,div.header,body > header))) :is(h1,h2,h3,.title,.top-bar-title,.sim-title,.simulation-title,#simTitle,#simTitleText),html body :is(.shell-header,.top-bar,:where(html[data-fsim-layout="qm-legacy"] :is(.title-bar,.app-header,.header-bar,header.upper-menu,header.sim-header,div.header,body > header))) :is(h1,h2,h3,.title,.top-bar-title,.sim-title,.simulation-title,#simTitle,#simTitleText) *{color:var(--fsim-topbar-text) !important;text-shadow:none !important;}
html body :is(.shell-header,.top-bar,:where(html[data-fsim-layout="qm-legacy"] :is(.title-bar,.app-header,.header-bar,header.upper-menu,header.sim-header,div.header,body > header))) :is(button,select,.shell-btn){background-color:var(--fsim-topbar-control-bg) !important;background-image:none !important;color:var(--fsim-topbar-control-text) !important;border-color:var(--fsim-topbar-control-border) !important;box-shadow:none !important;text-shadow:none !important;}
html body :is(.shell-header,.top-bar,:where(html[data-fsim-layout="qm-legacy"] :is(.title-bar,.app-header,.header-bar,header.upper-menu,header.sim-header,div.header,body > header))) :is(button,select):hover{background-color:var(--fsim-topbar-control-bg-hover) !important;color:var(--fsim-topbar-text) !important;}
html body :is(.shell-header,.top-bar,:where(html[data-fsim-layout="qm-legacy"] :is(.title-bar,.app-header,.header-bar,header.upper-menu,header.sim-header,div.header,body > header))) select{color-scheme:dark !important;}
html body :is(.shell-header,.top-bar,:where(html[data-fsim-layout="qm-legacy"] :is(.title-bar,.app-header,.header-bar,header.upper-menu,header.sim-header,div.header,body > header))) select option{background:var(--fsim-topbar-menu-bg) !important;color:var(--fsim-topbar-text) !important;}
html body :is(.shell-header,.top-bar,:where(html[data-fsim-layout="qm-legacy"] :is(.title-bar,.app-header,.header-bar,header.upper-menu,header.sim-header,div.header,body > header))) :is(label,.ht-ctl,.lbl-speed,#lbl-speed){color:var(--fsim-topbar-text-muted) !important;}
html body :is(.shell-header,.top-bar,:where(html[data-fsim-layout="qm-legacy"] :is(.title-bar,.app-header,.header-bar,header.upper-menu,header.sim-header,div.header,body > header))) input[type=checkbox]:where(:not([style*="accent-color"])){accent-color:var(--fsim-topbar-accent) !important;}
html body :is(.shell-header,.top-bar,:where(html[data-fsim-layout="qm-legacy"] :is(.title-bar,.app-header,.header-bar,header.upper-menu,header.sim-header,div.header,body > header))) :is(#btn-gi,#btn-cg).active,html body :is(.shell-header,.top-bar,:where(html[data-fsim-layout="qm-legacy"] :is(.title-bar,.app-header,.header-bar,header.upper-menu,header.sim-header,div.header,body > header))) [aria-pressed="true"]:not(#shell-play),
html body #shell .shell-header :is(#btnDim2D,#btnDim3D):is(.active,.on,.selected,[aria-pressed="true"]){background-color:var(--fsim-topbar-selected-bg) !important;color:var(--fsim-topbar-text) !important;border-color:var(--fsim-topbar-selected-border) !important;}
html body #shell .shell-header :has(> #btnDim2D){background-color:var(--fsim-topbar-segment-bg) !important;border-color:var(--fsim-topbar-control-border) !important;box-shadow:none !important;}
html body #shell .shell-header :is(#btnDim2D,#btnDim3D):not(.active):not(.on):not(.selected){background-color:transparent !important;color:var(--fsim-topbar-text-quiet) !important;opacity:1 !important;}
/* Ask AI Tutor: white oval pill, outlined sparkle drawn in the glyph's own box (nothing moves) */
html body :is(.shell-header,.top-bar,:where(html[data-fsim-layout="qm-legacy"] :is(.title-bar,.app-header,.header-bar,header.upper-menu,header.sim-header,div.header,body > header))) :is(#ask-euler,.ask-euler){background-color:var(--color-surface) !important;color:var(--color-text) !important;border-color:var(--color-surface) !important;}
html body :is(.shell-header,.top-bar,:where(html[data-fsim-layout="qm-legacy"] :is(.title-bar,.app-header,.header-bar,header.upper-menu,header.sim-header,div.header,body > header))) :is(#ask-euler,.ask-euler) *{color:var(--color-text) !important;}
html body :is(.shell-header,.top-bar,:where(html[data-fsim-layout="qm-legacy"] :is(.title-bar,.app-header,.header-bar,header.upper-menu,header.sim-header,div.header,body > header))) :is(#ask-euler,.ask-euler) :is(svg,span:first-child){color:var(--color-accent) !important;fill:currentColor !important;}
html body :is(.shell-header,.top-bar,:where(html[data-fsim-layout="qm-legacy"] :is(.title-bar,.app-header,.header-bar,header.upper-menu,header.sim-header,div.header,body > header))) :is(#ask-euler,.ask-euler){border-radius:var(--radius-full) !important;}
html body :is(.shell-header,.top-bar,:where(html[data-fsim-layout="qm-legacy"] :is(.title-bar,.app-header,.header-bar,header.upper-menu,header.sim-header,div.header,body > header))) :is(#ask-euler,.ask-euler) .ask-euler-icon{color:transparent !important;background-color:var(--fsim-tutor-icon) !important;-webkit-mask:var(--fsim-tutor-icon-mask) center/contain no-repeat !important;mask:var(--fsim-tutor-icon-mask) center/contain no-repeat !important;}
/* Play: the one royal-blue button */
html body :is(#shell-play,#playpause-btn,#btnPlayPause,html[data-fsim-layout="qm-legacy"] :is(#btnPlay,#playBtn,#playPauseBtn,#plB)){background-color:var(--color-accent) !important;color:var(--color-text-on-accent) !important;border-color:var(--fsim-play-border) !important;}
html body :is(#shell-play,#playpause-btn,#btnPlayPause,html[data-fsim-layout="qm-legacy"] :is(#btnPlay,#playBtn,#playPauseBtn,#plB)):hover{background-color:var(--color-accent-hover) !important;}
html body :is(.shell-header,.top-bar,:where(html[data-fsim-layout="qm-legacy"] :is(.title-bar,.app-header,.header-bar,header.upper-menu,header.sim-header,div.header,body > header))) :is(.shell-divider,.divider,.shell-sep,.hdr-sep){background-color:var(--fsim-topbar-control-border) !important;border-color:var(--fsim-topbar-control-border) !important;}
/* light-only: the theme switch is hidden (not removed: sim JS still looks it up) */
html body :is(#shell-theme,#fu-theme,.fu-theme){visibility:hidden !important;}

/* ── stage frame ──────────────────────────────────────────────────────── */
html body :is(.canvas-frame,.plot-box){background-color:var(--color-surface) !important;}
html body :is(.release-hint,.rotate-drag-hint,.stage-hint){background-color:var(--fsim-stage-hint-bg) !important;color:var(--color-text) !important;border-color:var(--color-border) !important;}

/* ── sidebar: one light-blue ground; graphs keep their own ─────────────── */
html body :is(.shell-aside,#sb-sidebar,:where(html[data-fsim-layout="qm-legacy"] :is(aside#rightPanel,.ho-sidebar))){background-color:var(--fsim-sidebar-bg) !important;background-image:none !important;border-color:var(--fsim-sidebar-line) !important;}
html body :is(.shell-aside,#sb-sidebar,:where(html[data-fsim-layout="qm-legacy"] :is(aside#rightPanel,.ho-sidebar))) *:not(canvas):not(svg):not(svg *):not(input):not(button):not(select):not(.inq-dot):not(.choice):not(.predict-eval):not([class*="dot"]):not([class*="swatch"]):not([class*="chip"]):not([class*="color"]):not([class*="legend"] *):not([style*="background"]):not([class*="graph"] *):not([id*="graph"] *):not([class*="chart"] *):not([id*="chart"] *){
  background-color:transparent !important;background-image:none !important;}
html body :is(.shell-aside,#sb-sidebar,:where(html[data-fsim-layout="qm-legacy"] :is(aside#rightPanel,.ho-sidebar))) *{border-color:var(--fsim-sidebar-line) !important;box-shadow:none !important;}
html body :is(.shell-aside,#sb-sidebar,:where(html[data-fsim-layout="qm-legacy"] :is(aside#rightPanel,.ho-sidebar))){color:var(--color-text) !important;}
/* v1.2.1: the :not() exemptions below sit inside :where() so they add NO specificity (in 1.0.1-1.2.0 they raised the
   sidebar helper-text rule above the Guided Inquiry text rule: inquiry paragraphs with class note-text turned faint).
   v1.0.1: READOUTS (.stat-label, values, *Val ids) and checkboxes skip an element that carries its OWN inline
   colour: sims colour-code readouts and legend checkboxes on purpose. Plain form labels are still set to ink:
   their inline colours are dark-theme values (e.g. #e2e8f0) that vanish on the light sidebar (Alice teal / Bella amber, Re / Im curves), and the approved look
   keeps those colours. Found on SR L12-s0, L12-s2, L19-s2 and QM Time-evolution (2026-10-06). */
html body :is(.shell-aside,#sb-sidebar,:where(html[data-fsim-layout="qm-legacy"] :is(aside#rightPanel,.ho-sidebar))) :is(h2,h3,h4,h5,.aside-zone-title,.section-title,.panel-title,.panel-controls-title):where(:not([style*="color"])){color:var(--color-text-faint) !important;}
html body :is(.shell-aside,#sb-sidebar,:where(html[data-fsim-layout="qm-legacy"] :is(aside#rightPanel,.ho-sidebar))) :is(label,.ctrl-box-label,.label,.param-label,.stat-row){color:var(--color-text) !important;}
html body :is(.shell-aside,#sb-sidebar,:where(html[data-fsim-layout="qm-legacy"] :is(aside#rightPanel,.ho-sidebar))) .stat-label:where(:not([style*="color"])){color:var(--color-text) !important;}
html body :is(.shell-aside,#sb-sidebar,:where(html[data-fsim-layout="qm-legacy"] :is(aside#rightPanel,.ho-sidebar))) :is(.slider-val,.value,.val,.readout-main,.stat-value,.stat-val,output,.param-value,[id$="Val"],[id$="-val"]):where(:not([style*="color"])){color:var(--color-text) !important;}
html body :is(.shell-aside,#sb-sidebar,:where(html[data-fsim-layout="qm-legacy"] :is(aside#rightPanel,.ho-sidebar))) :is(.control-range,.readout-sub,.readout-kicker,.hint,.note-text,small):where(:not([style*="color"])){color:var(--color-text-faint) !important;}
html body :is(.shell-aside,#sb-sidebar,:where(html[data-fsim-layout="qm-legacy"] :is(aside#rightPanel,.ho-sidebar))) :is(button,.shell-btn,select){background-color:var(--fsim-control-bg) !important;background-image:none !important;color:var(--color-text) !important;}
html body :is(.shell-aside,#sb-sidebar,:where(html[data-fsim-layout="qm-legacy"] :is(aside#rightPanel,.ho-sidebar))) :is(button,.shell-btn):hover{background-color:var(--fsim-control-bg-hover) !important;}
html body :is(.shell-aside,#sb-sidebar,:where(html[data-fsim-layout="qm-legacy"] :is(aside#rightPanel,.ho-sidebar))) :is(button,.shell-btn):is(.active,.on,.selected,[aria-pressed="true"]){background-color:var(--fsim-selected-bg) !important;color:var(--color-accent-active) !important;border-color:var(--fsim-accent-border) !important;}
html body :is(.shell-aside,#sb-sidebar,:where(html[data-fsim-layout="qm-legacy"] :is(aside#rightPanel,.ho-sidebar))) :is(#inq-next,.inq-next){background-color:var(--color-accent) !important;color:var(--color-text-on-accent) !important;border-color:var(--color-accent) !important;}
html body :is(.shell-aside,#sb-sidebar,:where(html[data-fsim-layout="qm-legacy"] :is(aside#rightPanel,.ho-sidebar))) :is(#inq-next,.inq-next):hover{background-color:var(--color-accent-hover) !important;}
/* ── Unified slider (2026-10-10, owner-approved target: solid thumb, two-tone track) ──
   Every input[type=range], platform-wide. WebKit: the thumb paints the 8px track line
   itself (border-image, accent to its left, grey to its right, 100vw each way); the
   input's mask clips that line to the input with round caps. The inline padding keeps
   the thumb's travel inside the caps, so the mask never cuts the thumb. Firefox uses
   ::-moz-range-progress. */
html body input[type=range]{-webkit-appearance:none !important;appearance:none !important;box-sizing:border-box !important;width:100% !important;height:var(--fsim-slider-thumb) !important;background:transparent !important;border:0 !important;margin:0 !important;padding:0 calc(var(--fsim-slider-track-h) / 2) !important;cursor:pointer !important;accent-color:var(--color-accent) !important;-webkit-mask:linear-gradient(var(--fsim-mask-on) 0 0) center/calc(100% - var(--fsim-slider-track-h)) 100% no-repeat,radial-gradient(closest-side,var(--fsim-mask-on) calc(100% - .5px),var(--fsim-mask-off)) left center/var(--fsim-slider-track-h) var(--fsim-slider-track-h) no-repeat,radial-gradient(closest-side,var(--fsim-mask-on) calc(100% - .5px),var(--fsim-mask-off)) right center/var(--fsim-slider-track-h) var(--fsim-slider-track-h) no-repeat !important;mask:linear-gradient(var(--fsim-mask-on) 0 0) center/calc(100% - var(--fsim-slider-track-h)) 100% no-repeat,radial-gradient(closest-side,var(--fsim-mask-on) calc(100% - .5px),var(--fsim-mask-off)) left center/var(--fsim-slider-track-h) var(--fsim-slider-track-h) no-repeat,radial-gradient(closest-side,var(--fsim-mask-on) calc(100% - .5px),var(--fsim-mask-off)) right center/var(--fsim-slider-track-h) var(--fsim-slider-track-h) no-repeat !important;}
html body input[type=range]::-webkit-slider-runnable-track{-webkit-appearance:none !important;height:var(--fsim-slider-thumb) !important;background:transparent !important;border:0 !important;border-radius:0 !important;box-shadow:none !important;}
html body input[type=range]::-webkit-slider-thumb{-webkit-appearance:none !important;width:var(--fsim-slider-thumb) !important;height:var(--fsim-slider-thumb) !important;margin-top:0 !important;border:0 !important;border-radius:50% !important;background:var(--color-accent) !important;box-shadow:none !important;border-image:linear-gradient(90deg,var(--color-accent) 50%,var(--fsim-slider-track) 0) 0 1/calc(50% - var(--fsim-slider-track-h) / 2) 100vw/0 100vw !important;}
html body input[type=range]::-moz-range-track{height:var(--fsim-slider-track-h) !important;border:0 !important;border-radius:var(--radius-full) !important;background:var(--fsim-slider-track) !important;}
html body input[type=range]::-moz-range-progress{height:var(--fsim-slider-track-h) !important;border-radius:var(--radius-full) !important;background:var(--color-accent) !important;}
html body input[type=range]::-moz-range-thumb{width:var(--fsim-slider-thumb) !important;height:var(--fsim-slider-thumb) !important;border:0 !important;border-radius:50% !important;background:var(--color-accent) !important;box-shadow:none !important;}
html body input[type=range]:disabled{opacity:.45 !important;cursor:not-allowed !important;}
/* ── Slider stands alone on its line (2026-10-11, owner: golden = label row, slider, numbers below) ──
   In the sims' horizontal slider rows: anything before the slider goes above it, anything after it
   (readouts, number boxes, units) goes below it, right-aligned; +/- nudge buttons are removed. */
html body :is(:is(.ctrl-slider-row,.control-row,.slider,.cg,.ctrl-row,.ctrl-inline,.sim-lab,.stepper-row,.ctrl-section-controls):has(> input[type=range] ~ *),.sl-mini:has(> input[type=range])){flex-wrap:wrap !important;row-gap:6px !important;}
html body :is(:is(.ctrl-slider-row,.control-row,.slider,.cg,.ctrl-row,.ctrl-inline,.sim-lab,.stepper-row,.ctrl-section-controls):has(> input[type=range] ~ *),.sl-mini:has(> input[type=range])):has(> input[type=range] ~ :not(:is(.pv-step,.fe-step,.btn-nudge,.sim-step,.nudge-btn,.om-step,.lsm-step,.ls-step,.step-btn))){justify-content:flex-end !important;}
html body :is(:is(.ctrl-slider-row,.control-row,.slider,.cg,.ctrl-row,.ctrl-inline,.sim-lab,.stepper-row,.ctrl-section-controls):has(> input[type=range] ~ *),.sl-mini:has(> input[type=range])) > :has(~ input[type=range]){order:-1 !important;margin-right:auto !important;}
html body :is(:is(.ctrl-slider-row,.control-row,.slider,.cg,.ctrl-row,.ctrl-inline,.sim-lab,.stepper-row,.ctrl-section-controls):has(> input[type=range] ~ *),.sl-mini:has(> input[type=range])) > input[type=range]{order:0 !important;flex:0 0 100% !important;}
html body :is(:is(.ctrl-slider-row,.control-row,.slider,.cg,.ctrl-row,.ctrl-inline,.sim-lab,.stepper-row,.ctrl-section-controls):has(> input[type=range] ~ *),.sl-mini:has(> input[type=range])) > input[type=range] ~ *{order:1 !important;}
html body :is(:is(.ctrl-slider-row,.control-row,.slider,.cg,.ctrl-row,.ctrl-inline,.sim-lab,.stepper-row,.ctrl-section-controls):has(> input[type=range] ~ *),.sl-mini:has(> input[type=range])) > :is(.pv-step,.fe-step,.btn-nudge,.sim-step,.nudge-btn,.om-step,.lsm-step,.ls-step,.step-btn){display:none !important;}
html body .control-row:has(> :is(#pointCountSlider,#threshSlider)) > label:first-child{order:1 !important;margin-right:auto !important;}

html body :is(.shell-aside,#sb-sidebar,:where(html[data-fsim-layout="qm-legacy"] :is(aside#rightPanel,.ho-sidebar))) input[type=checkbox]:where(:not([style*="accent-color"])){accent-color:var(--color-accent) !important;}

/* ── Guided Inquiry ───────────────────────────────────────────────────── */
html body :is(#aside-inquiry,#inq-zone,#inq-cards,.inq-zone) .inq-step :is(h3,h4,.inq-title){color:var(--color-text) !important;}
html body :is(#aside-inquiry,#inq-zone,#inq-cards,.inq-zone) .inq-step :is(p,li){color:var(--color-text-muted) !important;}
html body :is(#aside-inquiry,#inq-zone,#inq-cards,.inq-zone) .inq-step :is(p,li) b{color:var(--color-text) !important;}
html body .inq-dot{background-color:var(--fsim-track) !important;}
html body .inq-dot:is(.active,.done,.on){background-color:var(--color-accent) !important;}
html body .choice{background-color:var(--fsim-control-bg) !important;color:var(--color-text) !important;}
html body .choice:hover{background-color:var(--fsim-control-bg-hover) !important;}
html body .choice.correct{background-color:var(--fsim-ok-bg) !important;border-color:var(--fsim-ok-border) !important;color:var(--fsim-ok-text) !important;}
html body .choice.wrong{background-color:var(--fsim-bad-bg) !important;border-color:var(--fsim-bad-border) !important;color:var(--fsim-bad-text) !important;}
html body .predict-eval{background-color:var(--fsim-eval-bg) !important;color:var(--color-text-muted) !important;}
html body .predict-eval.correct{background-color:var(--fsim-ok-bg) !important;color:var(--color-success-text) !important;border-color:var(--fsim-ok-border-soft) !important;}
html body .predict-eval.wrong{background-color:var(--fsim-near-bg) !important;color:var(--fsim-near-text) !important;border-color:var(--fsim-near-border) !important;}

/* ── HIDE tab: top-bar navy, white text ──────────────────────────────── */
html body #sb-hide-tab{background-color:var(--fsim-hide-tab-bg) !important;color:var(--fsim-hide-tab-text) !important;border-color:var(--fsim-hide-tab-bg) !important;box-shadow:var(--fsim-hide-tab-shadow) !important;}
html body #sb-hide-tab *{color:var(--fsim-hide-tab-text) !important;}
html body #sb-hide-tab:hover{background-color:var(--fsim-hide-tab-bg-hover) !important;border-color:var(--fsim-hide-tab-bg-hover) !important;}

/* ── The Physics sheet ────────────────────────────────────────────────── */
html body #phys-backdrop{background-color:var(--fsim-scrim) !important;}
html body #phys-backdrop .phys-modal{background-color:var(--color-surface) !important;border-color:var(--color-border) !important;box-shadow:var(--shadow-xl) !important;}
html body #phys-backdrop .lede{color:var(--color-text-muted) !important;background-color:var(--fsim-sheet-tint) !important;border-color:var(--fsim-accent-border) !important;border-left-color:var(--color-accent) !important;}
html body #phys-backdrop .ps-no{color:var(--color-accent) !important;}
html body #phys-backdrop .ps-try{border-color:var(--fsim-accent-border) !important;background:var(--fsim-sheet-tint) !important;}
html body #phys-backdrop .ps-try-tag{background-color:var(--color-accent) !important;}
html body #phys-backdrop .ps-key{background-color:var(--fsim-sheet-tint) !important;border-color:var(--fsim-accent-border) !important;}
html body #phys-backdrop #phys-download{background-color:var(--color-surface) !important;color:var(--color-text) !important;}
html body #phys-backdrop .seesim{background-color:var(--color-accent) !important;color:var(--color-text-on-accent) !important;border-color:var(--color-accent) !important;}
/* sheet header = the top bar; Download = the Ask-AI pill; one primary (Next) */
html body #phys-backdrop .phys-head{background:var(--fsim-topbar-bg) !important;border-radius:var(--fsim-sheet-head-radius) !important;
  box-shadow:var(--fsim-sheet-head-edge) !important;border-bottom-color:var(--fsim-topbar-edge) !important;}
html body #phys-backdrop .phys-head .phys-title h2{color:var(--fsim-topbar-text) !important;}
html body #phys-backdrop .phys-head .phys-kicker{color:var(--fsim-topbar-text-quiet) !important;}
html body #phys-backdrop #phys-download{background-color:var(--color-surface) !important;color:var(--color-text) !important;border-color:var(--color-surface) !important;border-radius:var(--radius-full) !important;box-shadow:none !important;}
html body #phys-backdrop #phys-download:hover{background-color:var(--color-accent-subtle) !important;}
html body #phys-backdrop #phys-close{background-color:var(--fsim-sheet-close-bg) !important;color:var(--fsim-topbar-control-text) !important;border-color:var(--fsim-sheet-close-border) !important;box-shadow:none !important;}
html body #phys-backdrop #phys-close:hover{background-color:var(--fsim-sheet-close-bg-hover) !important;color:var(--fsim-topbar-text) !important;}
html body #phys-backdrop .gv-oneline{background-color:var(--color-accent-subtle) !important;border-color:var(--fsim-accent-border) !important;border-left-color:var(--color-accent) !important;}
html body #phys-backdrop .gv-oneline .gv-ok{color:var(--color-accent) !important;}
html body #phys-backdrop #ps-more{background-color:var(--color-accent-subtle) !important;color:var(--color-accent-active) !important;border-color:var(--fsim-accent-border) !important;}
html body #phys-backdrop #ps-next{background-color:var(--color-accent) !important;color:var(--color-text-on-accent) !important;border-color:var(--color-accent) !important;}
html body #phys-backdrop #ps-next:hover{background-color:var(--color-accent-hover) !important;}
html body #ps-watch{background-color:var(--color-surface) !important;color:var(--color-text) !important;border-color:var(--color-border) !important;box-shadow:var(--shadow-xl) !important;}

/* ── Simulation guide: landing board, tour card, hint, play tip (Horizon cards, Inter) ── */
html body :is(#gv-start,#gv-tour,#gv-hint,#gv-playtip) *:not(svg):not(svg *):not(.katex):not(.katex *),html body #gv-playtip{font-family:var(--fsim-font-ui) !important;}
/* the guide layer defines these same variables on these same elements; in the locked look the
   skin's values WIN, so here they are !important (unlike the re-pointing block at the top) */
#gv-start,#gv-tour,#gv-free,#gv-playtip,#gv-hint{--chalk:var(--color-text) !important;--chalk2:var(--color-text-muted) !important;--chalk3:var(--color-text-faint) !important;--yellow:var(--color-accent) !important;
  --hand:var(--fsim-font-ui) !important;--print:var(--fsim-font-ui) !important;}
html body .gv-board{background:var(--color-surface) !important;color:var(--color-text) !important;border-radius:var(--radius-lg) !important;box-shadow:var(--shadow-xl) !important;border:1px solid var(--color-border) !important;}
html body .gv-board::before,html body .gv-ledge{display:none !important;}
html body .gv-board b{color:var(--color-text) !important;font-weight:var(--font-weight-semibold) !important;}
html body .gv-hand{border:1px solid var(--color-border-strong) !important;border-radius:var(--radius-md) !important;}
html body #gv-start{background:var(--fsim-guide-backdrop) !important;backdrop-filter:var(--fsim-guide-backdrop-filter) !important;-webkit-backdrop-filter:var(--fsim-guide-backdrop-filter) !important;}
html body #gv-start .gv-board{width:min(520px,100%) !important;padding:30px 32px 30px !important;}
html body .gv-kicker{font:500 12px/1 var(--font-mono) !important;letter-spacing:.08em !important;text-transform:uppercase !important;color:var(--color-text-faint) !important;margin-bottom:10px !important;}
html body #gv-start h2{font:700 30px/1.15 var(--fsim-font-ui) !important;letter-spacing:-.02em !important;color:var(--color-text) !important;}
html body .gv-underline{display:none !important;}
html body .gv-blurb{font:400 16px/1.55 var(--fsim-font-ui) !important;color:var(--color-text-muted) !important;margin:12px auto 24px !important;}
html body .gv-choices{gap:16px !important;align-items:start !important;}
/* the choice is only a wrapper: its <b> is the button, its <small> the caption under it */
html body .gv-choice{background:none !important;border:0 !important;box-shadow:none !important;padding:0 !important;gap:8px !important;transform:none !important;border-radius:var(--radius-md) !important;}
html body .gv-choice:hover,html body .gv-choice:focus-visible{background:none !important;transform:none !important;outline:none !important;}
html body .gv-choice b{display:block !important;width:100% !important;box-sizing:border-box !important;padding:10px 16px !important;border-radius:var(--radius-sm) !important;font:600 15px/1.2 var(--fsim-font-ui) !important;color:var(--color-accent) !important;background:var(--color-surface) !important;border:1px solid var(--color-accent) !important;box-shadow:var(--fsim-choice-shadow) !important;transition:background .15s,box-shadow .15s,transform .1s !important;}
html body .gv-choice:hover b{background:var(--color-bg-subtle) !important;box-shadow:var(--fsim-choice-shadow-hover) !important;}
html body .gv-choice:active b{transform:translateY(1px) !important;}
html body .gv-choice:focus-visible b{box-shadow:var(--fsim-choice-focus) !important;}
html body .gv-choice:focus,html body .gv-choice:focus-visible,html body .gv-choice.gv-hand:focus-visible{outline:0 !important;outline-offset:0 !important;box-shadow:none !important;border:0 !important;}
html body .gv-choice small{font:400 13px/1.3 var(--fsim-font-ui) !important;color:var(--color-text-faint) !important;}
html body .gv-choice.guide b{background:var(--color-accent) !important;color:var(--color-text-on-accent) !important;border-color:var(--color-accent) !important;box-shadow:var(--fsim-choice-primary-shadow) !important;}
html body .gv-choice.guide:hover b{background:var(--color-accent-hover) !important;}
html body .gv-choice.guide small{color:var(--color-text-faint) !important;}
@media (max-width:480px){html body .gv-choices{gap:14px !important;}}
/* v1.2.0: the guide MARKS the page controls a step points at (tools/guide_patch.py) and this draws their outlines:
   one clean outline per control, 1 px out from its rounded box, so controls stacked 8 px apart keep a clear gap
   (the old hand-drawn paths were padded 3 px and crossed). Shown only while the tour is open. */
html body .fsim-guide-target{outline:2px solid var(--color-accent) !important;outline-offset:1px !important;}
html body .fsim-guide-target--sec{outline-style:dashed !important;outline-color:var(--fsim-guide-line-secondary) !important;}
html body:not(:has(#gv-tour:not([hidden]))) .fsim-guide-target{outline:none !important;}
/* tour: blue marker lines, no chalk texture */
html body .gv-chalkline,html body .gv-pointer{filter:none !important;stroke:var(--color-accent) !important;stroke-width:2.5 !important;}
html body .gv-chalkline.sec{stroke:var(--fsim-guide-line-secondary) !important;stroke-dasharray:6 5 !important;}
html body .gv-tag{font:600 15px var(--font-mono) !important;fill:var(--color-accent-active) !important;stroke:var(--color-surface) !important;stroke-width:5px !important;}
html body #gv-card{padding:16px 18px 14px !important;}
html body .gv-chap{font:500 11.5px/1 var(--font-mono) !important;letter-spacing:.06em !important;text-transform:uppercase !important;color:var(--color-accent) !important;}
html body .gv-count{font:500 12px/1 var(--font-mono) !important;color:var(--color-text-faint) !important;}
/* NOTE: locked A renders inactive tally marks transparent (the skin pointed at a token that was never
   defined). Kept for fidelity; candidate fix for v1.1: background var(--color-bg-muted). */
html body .gv-tally i{background:transparent !important;transform:none !important;width:14px !important;height:4px !important;border-radius:var(--radius-full) !important;}
html body .gv-tally i.on{background:var(--color-accent) !important;}
html body .gv-body h4{font:700 19px/1.25 var(--fsim-font-ui) !important;color:var(--color-text) !important;letter-spacing:-.01em !important;}
html body #gv-text p{font:400 14.5px/1.55 var(--fsim-font-ui) !important;color:var(--color-text-muted) !important;}
html body .gv-try{font:500 14px/1.45 var(--fsim-font-ui) !important;color:var(--color-accent-active) !important;background:var(--fsim-selected-bg) !important;border:1px solid var(--fsim-accent-border) !important;border-radius:var(--radius-md) !important;}
html body .gv-try .gv-tl{font-family:var(--fsim-font-ui) !important;font-weight:var(--font-weight-bold) !important;}
html body .gv-try.ok{color:var(--fsim-ok-text) !important;background:var(--fsim-ok-bg) !important;border-color:var(--fsim-ok-border-soft) !important;}
html body .gv-tick path{stroke:var(--fsim-ok-text) !important;}
html body .gv-cbtn{font:600 13px/1 var(--fsim-font-ui) !important;height:36px !important;padding:0 14px !important;border-radius:var(--radius-sm) !important;color:var(--color-text) !important;background:var(--color-surface) !important;border:1px solid var(--color-border-strong) !important;}
html body .gv-cbtn:hover{background:var(--color-bg-subtle) !important;transform:none !important;}
html body .gv-cbtn.primary{background:var(--color-accent) !important;color:var(--color-text-on-accent) !important;border-color:var(--color-accent) !important;}
html body .gv-cbtn.primary:hover{background:var(--color-accent-hover) !important;}
html body .gv-textbtn{color:var(--color-text-subtle) !important;font-family:var(--fsim-font-ui) !important;font-size:13.5px !important;}
html body #gv-close,html body #gv-hint #gv-hint-x{color:var(--color-text-faint) !important;font-family:var(--fsim-font-ui) !important;}
html body #gv-hint{padding:11px 34px 12px 14px !important;}
html body #gv-hint p{font:500 14px/1.45 var(--fsim-font-ui) !important;color:var(--color-text) !important;}
html body #gv-hint p b{color:var(--color-accent-active) !important;font-weight:var(--font-weight-semibold) !important;}
html body #gv-hint .gv-notch{border-bottom-color:var(--color-border) !important;}
html body #gv-hint.below .gv-notch{border-top-color:var(--color-border) !important;border-bottom-color:transparent !important;}
html body #gv-hint.done p{color:var(--fsim-ok-text) !important;}
html body .gv-kicker,html body .gv-chap,html body .gv-count,html body .gv-tag{font-family:var(--font-mono) !important;}
html body #gv-voice{font:500 13.5px/1 var(--fsim-font-ui) !important;color:var(--color-text-faint) !important;padding:6px 4px !important;}
html body #gv-voice:hover{color:var(--color-accent-active) !important;}
html body #gv-voice[aria-pressed="false"]{color:var(--fsim-guide-voice-off) !important;}
html body .gv-final #gv-voice{margin-left:2px !important;}
/* "Press Play to start": a light chip */
html body #gv-playtip{background:var(--color-surface) !important;color:var(--color-accent-active) !important;font:600 13.5px/1.2 var(--fsim-font-ui) !important;padding:8px 13px !important;border-radius:var(--radius-sm) !important;
  box-shadow:var(--fsim-playtip-shadow) !important;}
html body #gv-playtip::before{border-bottom-color:var(--color-surface) !important;filter:var(--fsim-playtip-notch-shadow) !important;}

/* ── focus ring (outline takes no layout space) ──────────────────────── */
html body :is(button,select,input,a,[tabindex]):focus-visible{outline:2px solid var(--color-focus-ring) !important;outline-offset:2px !important;}
html body :is(.shell-header,.top-bar,:where(html[data-fsim-layout="qm-legacy"] :is(.title-bar,.app-header,.header-bar,header.upper-menu,header.sim-header,div.header,body > header))) :is(button,select,input,a):focus-visible{outline-color:var(--fsim-topbar-focus) !important;}

/* ── _styles/frame.css ── */
/* GENERATED by tools/gen_sim_tokens.py from the live fleet probe. Do not edit; edit MAP there. */
/* Frame components, token-driven. Layer: fermi.override (!important). Zero specificity (:where).
   Applies to stamped sims outside the header-fit tight states; a sim is excluded from a rule when its
   own value for that property is not uniform across its elements and captured widths. */
@media (min-width: 641px) {
  :where(html[data-fsim-id]:not(.fu-tight):not(.fu-tighter):not([data-fsim-id="cm-l29-the-centrifugal-force-shell"],[data-fsim-id="qm-finite-well-probability-plot"],[data-fsim-id="qm-harmonic-oscillator-high-energies"],[data-fsim-id="qm-hydrogen-atom-wavefunctions"],[data-fsim-id="qm-spin-x-measurement-probability"],[data-fsim-id="sr-l00-s2-fly-on-a-boat-v2"],[data-fsim-id="sr-l07-s1-michelson-morley-experiment-3d"],[data-fsim-id="sr-l10-s2-lorentz-transformation-vs-euclidean-rota-shell"])) {
    & :where(:is(.shell-header,.top-bar,html[data-fsim-layout="qm-legacy"] :is(.title-bar,.app-header,.header-bar,header.upper-menu,header.sim-header,div.header,body > header))){padding-top:var(--fsim-topbar-pad-t) !important;}
    & :where(:is(.shell-header,.top-bar,html[data-fsim-layout="qm-legacy"] :is(.title-bar,.app-header,.header-bar,header.upper-menu,header.sim-header,div.header,body > header))){padding-bottom:var(--fsim-topbar-pad-b) !important;}
    & :where(.shell-title,.top-bar-title,.sim-title,.simulation-title,#simTitle,#simTitleText){font-size:var(--fsim-topbar-title-fs) !important;}
    & :where(.shell-title,.top-bar-title,.sim-title,.simulation-title,#simTitle,#simTitleText){font-weight:var(--fsim-topbar-title-fw) !important;}
    & :where(.shell-title,.top-bar-title,.sim-title,.simulation-title,#simTitle,#simTitleText){letter-spacing:var(--fsim-topbar-title-ls) !important;}
    & :where(.shell-title,.top-bar-title,.sim-title,.simulation-title,#simTitle,#simTitleText){line-height:var(--fsim-topbar-title-lh) !important;}
    & :where(.shell-title,.top-bar-title,.sim-title,.simulation-title,#simTitle,#simTitleText){font-family:var(--fsim-topbar-title-ff) !important;}
    & :where(:is(.shell-header,.top-bar,html[data-fsim-layout="qm-legacy"] :is(.title-bar,.app-header,.header-bar,header.upper-menu,header.sim-header,div.header,body > header)) :is(button,.shell-btn):not(#ask-euler):not(#shell-play):not(#playpause-btn):not(#btnPlayPause):not(#btnPlay):not(#playBtn):not(#playPauseBtn):not(#plB)){padding-top:var(--fsim-topbar-button-pad-t) !important;}
    & :where(:is(.shell-header,.top-bar,html[data-fsim-layout="qm-legacy"] :is(.title-bar,.app-header,.header-bar,header.upper-menu,header.sim-header,div.header,body > header)) :is(button,.shell-btn):not(#ask-euler):not(#shell-play):not(#playpause-btn):not(#btnPlayPause):not(#btnPlay):not(#playBtn):not(#playPauseBtn):not(#plB)){padding-bottom:var(--fsim-topbar-button-pad-b) !important;}
    & :where(#shell-play,#playpause-btn,#btnPlayPause,#btnPlay,#playBtn,#playPauseBtn,#plB){padding-top:var(--fsim-button-play-pad-t) !important;}
    & :where(#shell-play,#playpause-btn,#btnPlayPause,#btnPlay,#playBtn,#playPauseBtn,#plB){padding-bottom:var(--fsim-button-play-pad-b) !important;}
    & :where(#shell-play,#playpause-btn,#btnPlayPause,#btnPlay,#playBtn,#playPauseBtn,#plB){font-weight:var(--fsim-button-play-fw) !important;}
    & :where(#shell-play,#playpause-btn,#btnPlayPause,#btnPlay,#playBtn,#playPauseBtn,#plB){letter-spacing:var(--fsim-button-play-ls) !important;}
    & :where(#shell-play,#playpause-btn,#btnPlayPause,#btnPlay,#playBtn,#playPauseBtn,#plB){border-top-left-radius:var(--fsim-button-play-r-tl) !important;}
    & :where(#shell-play,#playpause-btn,#btnPlayPause,#btnPlay,#playBtn,#playPauseBtn,#plB){border-top-right-radius:var(--fsim-button-play-r-tr) !important;}
    & :where(#shell-play,#playpause-btn,#btnPlayPause,#btnPlay,#playBtn,#playPauseBtn,#plB){border-bottom-right-radius:var(--fsim-button-play-r-br) !important;}
    & :where(#shell-play,#playpause-btn,#btnPlayPause,#btnPlay,#playBtn,#playPauseBtn,#plB){border-bottom-left-radius:var(--fsim-button-play-r-bl) !important;}
    & :where(#ask-euler){padding-top:var(--fsim-button-tutor-pad-t) !important;}
    & :where(#ask-euler){padding-right:var(--fsim-button-tutor-pad-r) !important;}
    & :where(#ask-euler){padding-bottom:var(--fsim-button-tutor-pad-b) !important;}
    & :where(#ask-euler){padding-left:var(--fsim-button-tutor-pad-l) !important;}
    & :where(#ask-euler){font-size:var(--fsim-button-tutor-fs) !important;}
    & :where(#ask-euler){font-weight:var(--fsim-button-tutor-fw) !important;}
    & :where(:is(.shell-header,.top-bar,html[data-fsim-layout="qm-legacy"] :is(.title-bar,.app-header,.header-bar,header.upper-menu,header.sim-header,div.header,body > header)) select){padding-top:var(--fsim-topbar-select-pad-t) !important;}
    & :where(:is(.shell-header,.top-bar,html[data-fsim-layout="qm-legacy"] :is(.title-bar,.app-header,.header-bar,header.upper-menu,header.sim-header,div.header,body > header)) select){padding-bottom:var(--fsim-topbar-select-pad-b) !important;}
    & :where(:is(.shell-header,.top-bar,html[data-fsim-layout="qm-legacy"] :is(.title-bar,.app-header,.header-bar,header.upper-menu,header.sim-header,div.header,body > header)) select){border-top-left-radius:var(--fsim-topbar-select-r-tl) !important;}
    & :where(:is(.shell-header,.top-bar,html[data-fsim-layout="qm-legacy"] :is(.title-bar,.app-header,.header-bar,header.upper-menu,header.sim-header,div.header,body > header)) select){border-top-right-radius:var(--fsim-topbar-select-r-tr) !important;}
    & :where(:is(.shell-header,.top-bar,html[data-fsim-layout="qm-legacy"] :is(.title-bar,.app-header,.header-bar,header.upper-menu,header.sim-header,div.header,body > header)) select){border-bottom-right-radius:var(--fsim-topbar-select-r-br) !important;}
    & :where(:is(.shell-header,.top-bar,html[data-fsim-layout="qm-legacy"] :is(.title-bar,.app-header,.header-bar,header.upper-menu,header.sim-header,div.header,body > header)) select){border-bottom-left-radius:var(--fsim-topbar-select-r-bl) !important;}
    & :where(.shell-aside,#sb-sidebar,html[data-fsim-layout="qm-legacy"] :is(aside#rightPanel,.ho-sidebar)){padding-top:var(--fsim-sidebar-pad-t) !important;}
    & :where(.shell-aside,#sb-sidebar,html[data-fsim-layout="qm-legacy"] :is(aside#rightPanel,.ho-sidebar)){padding-right:var(--fsim-sidebar-pad-r) !important;}
    & :where(.shell-aside,#sb-sidebar,html[data-fsim-layout="qm-legacy"] :is(aside#rightPanel,.ho-sidebar)){padding-bottom:var(--fsim-sidebar-pad-b) !important;}
    & :where(.shell-aside,#sb-sidebar,html[data-fsim-layout="qm-legacy"] :is(aside#rightPanel,.ho-sidebar)){padding-left:var(--fsim-sidebar-pad-l) !important;}
    & :where(.shell-aside,#sb-sidebar,html[data-fsim-layout="qm-legacy"] :is(aside#rightPanel,.ho-sidebar)){row-gap:var(--fsim-sidebar-row-gap) !important;}
    & :where(.shell-aside,#sb-sidebar,html[data-fsim-layout="qm-legacy"] :is(aside#rightPanel,.ho-sidebar)){column-gap:var(--fsim-sidebar-col-gap) !important;}
    & :where(.aside-zone-head,.shell-panel-head){font-size:var(--fsim-sidebar-head-fs) !important;}
    & :where(.aside-zone-head,.shell-panel-head){font-weight:var(--fsim-sidebar-head-fw) !important;}
    & :where(.aside-zone-head,.shell-panel-head){letter-spacing:var(--fsim-sidebar-head-ls) !important;}
    & :where(.aside-zone-head,.shell-panel-head){text-transform:var(--fsim-sidebar-head-tt) !important;}
    & :where(.ctrl-box-label){font-size:var(--fsim-control-label-fs) !important;}
    & :where(.ctrl-box-label){font-weight:var(--fsim-control-label-fw) !important;}
    & :where(.ctrl-box-label){letter-spacing:var(--fsim-control-label-ls) !important;}
    & :where(.ctrl-box-label){font-family:var(--fsim-control-label-ff) !important;}
    & :where(.slider-val){font-size:var(--fsim-control-value-fs) !important;}
    & :where(.slider-val){font-weight:var(--fsim-control-value-fw) !important;}
    & :where(.slider-val){font-family:var(--fsim-control-value-ff) !important;}
    & :where(.stat-row){padding-right:var(--fsim-readout-row-pad-r) !important;}
    & :where(.stat-row){padding-left:var(--fsim-readout-row-pad-l) !important;}
    & :where(.stat-label){font-weight:var(--fsim-readout-label-fw) !important;}
    & :where(.stat-value,.stat-val){font-weight:var(--fsim-readout-value-fw) !important;}
    & :where(.stat-value,.stat-val){font-family:var(--fsim-readout-value-ff) !important;}
    & :where(.plot-box){padding-top:var(--fsim-stage-pad-t) !important;}
    & :where(.plot-box){padding-right:var(--fsim-stage-pad-r) !important;}
    & :where(.plot-box){padding-bottom:var(--fsim-stage-pad-b) !important;}
    & :where(.plot-box){padding-left:var(--fsim-stage-pad-l) !important;}
    & :where(.plot-box){border-top-left-radius:var(--fsim-stage-r-tl) !important;}
    & :where(.plot-box){border-top-right-radius:var(--fsim-stage-r-tr) !important;}
    & :where(.plot-box){border-bottom-right-radius:var(--fsim-stage-r-br) !important;}
    & :where(.plot-box){border-bottom-left-radius:var(--fsim-stage-r-bl) !important;}
    & :where(.legend-item){padding-top:var(--fsim-legend-item-pad-t) !important;}
    & :where(.legend-item){padding-right:var(--fsim-legend-item-pad-r) !important;}
    & :where(.legend-item){padding-bottom:var(--fsim-legend-item-pad-b) !important;}
    & :where(.legend-item){padding-left:var(--fsim-legend-item-pad-l) !important;}
    & :where(.legend-item){font-size:var(--fsim-legend-item-fs) !important;}
    & :where(.legend-item){column-gap:var(--fsim-legend-item-col-gap) !important;}
  }
  :where(html[data-fsim-id]:not(.fu-tight):not(.fu-tighter):not([data-fsim-id="cm-collisions"],[data-fsim-id="cm-galperins-billiard"],[data-fsim-id="cm-l29-the-centrifugal-force-shell"],[data-fsim-id="qm-finite-well-probability-plot"],[data-fsim-id="qm-harmonic-oscillator-high-energies"],[data-fsim-id="qm-hydrogen-atom-wavefunctions"],[data-fsim-id="qm-spin-x-measurement-probability"],[data-fsim-id="sr-l00-s2-fly-on-a-boat-v2"],[data-fsim-id="sr-l07-s1-michelson-morley-experiment-3d"],[data-fsim-id="sr-l10-s2-lorentz-transformation-vs-euclidean-rota-shell"])) {
    & :where(:is(.shell-header,.top-bar,html[data-fsim-layout="qm-legacy"] :is(.title-bar,.app-header,.header-bar,header.upper-menu,header.sim-header,div.header,body > header))){padding-right:var(--fsim-topbar-pad-r) !important;}
    & :where(:is(.shell-header,.top-bar,html[data-fsim-layout="qm-legacy"] :is(.title-bar,.app-header,.header-bar,header.upper-menu,header.sim-header,div.header,body > header))){padding-left:var(--fsim-topbar-pad-l) !important;}
    & :where(:is(.shell-header,.top-bar,html[data-fsim-layout="qm-legacy"] :is(.title-bar,.app-header,.header-bar,header.upper-menu,header.sim-header,div.header,body > header))){column-gap:var(--fsim-topbar-col-gap) !important;}
    & :where(:is(.shell-header,.top-bar,html[data-fsim-layout="qm-legacy"] :is(.title-bar,.app-header,.header-bar,header.upper-menu,header.sim-header,div.header,body > header))){row-gap:var(--fsim-topbar-row-gap) !important;}
    & :where(#shell-play,#playpause-btn,#btnPlayPause,#btnPlay,#playBtn,#playPauseBtn,#plB){padding-right:var(--fsim-button-play-pad-r) !important;}
    & :where(#shell-play,#playpause-btn,#btnPlayPause,#btnPlay,#playBtn,#playPauseBtn,#plB){padding-left:var(--fsim-button-play-pad-l) !important;}
    & :where(#shell-play,#playpause-btn,#btnPlayPause,#btnPlay,#playBtn,#playPauseBtn,#plB){font-size:var(--fsim-button-play-fs) !important;}
    & :where(:is(.shell-header,.top-bar,html[data-fsim-layout="qm-legacy"] :is(.title-bar,.app-header,.header-bar,header.upper-menu,header.sim-header,div.header,body > header)) select){padding-right:var(--fsim-topbar-select-pad-r) !important;}
    & :where(:is(.shell-header,.top-bar,html[data-fsim-layout="qm-legacy"] :is(.title-bar,.app-header,.header-bar,header.upper-menu,header.sim-header,div.header,body > header)) select){padding-left:var(--fsim-topbar-select-pad-l) !important;}
    & :where(:is(.shell-header,.top-bar,html[data-fsim-layout="qm-legacy"] :is(.title-bar,.app-header,.header-bar,header.upper-menu,header.sim-header,div.header,body > header)) select){font-size:var(--fsim-topbar-select-fs) !important;}
  }
  :where(html[data-fsim-id]:not(.fu-tight):not(.fu-tighter):not([data-fsim-id="cm-collisions"],[data-fsim-id="cm-free-body-diagram-builder"],[data-fsim-id="cm-galperins-billiard"],[data-fsim-id="cm-l1-solar-system-orbits"],[data-fsim-id="cm-l2-newtons-laws"],[data-fsim-id="cm-l29-the-centrifugal-force-shell"],[data-fsim-id="cm-l30-coriolis-on-a-rotating-sphere"],[data-fsim-id="cm-l35-orbits"],[data-fsim-id="cm-l36-the-energy-of-the-orbit-new"],[data-fsim-id="condensed-matter-cm-bloch-oscillations"],[data-fsim-id="pp-particle-detector-headquarters"],[data-fsim-id="pp-spin-and-helicity"],[data-fsim-id="qm-2d-wavefunction-collapse-measurement"],[data-fsim-id="qm-a-k-vs-k-plot"],[data-fsim-id="qm-bound-states"],[data-fsim-id="qm-classical-vs-schrodinger"],[data-fsim-id="qm-classical-vs-schrodinger-anharmonic"],[data-fsim-id="qm-double-slit-exp-measurement"],[data-fsim-id="qm-double-slit-experiment"],[data-fsim-id="qm-finite-well-probability-plot"],[data-fsim-id="qm-harmonic-oscillator"],[data-fsim-id="qm-harmonic-oscillator-high-energies"],[data-fsim-id="qm-hydrogen-atom-energy-spectrum"],[data-fsim-id="qm-hydrogen-atom-wavefunctions"],[data-fsim-id="qm-infinite-potential-well"],[data-fsim-id="qm-multi-stage-stern-gerlach-new"],[data-fsim-id="qm-particle-on-a-circle"],[data-fsim-id="qm-quantum-tunneling-gaussian-wave"],[data-fsim-id="qm-quantum-tunneling-plane-wave"],[data-fsim-id="qm-single-gaussian-plot"],[data-fsim-id="qm-spherical-harmonics-explorer"],[data-fsim-id="qm-spin-measurement"],[data-fsim-id="qm-spin-x-measurement-probability"],[data-fsim-id="qm-stern-gerlach-new"],[data-fsim-id="qm-time-evolution-gaussian-fourier-comps"],[data-fsim-id="qm-time-evolution-gaussian-wavepacket"],[data-fsim-id="qm-time-evolution-qho-v2"],[data-fsim-id="qm-transmission-probability-plot"],[data-fsim-id="qm-two-gaussian-superposition"],[data-fsim-id="qm-vector-space-finite-vectors-updated"],[data-fsim-id="sr-l00-s2-fly-on-a-boat-v2"],[data-fsim-id="sr-l01-s1-polar-vs-cartesian-one-window-showing-an-shell"],[data-fsim-id="sr-l04-s1-supplementalscalars-vs-vectors-shell"],[data-fsim-id="sr-l04-s2-supplementaleuclidean-space-and-metric-shell"],[data-fsim-id="sr-l07-s1-michelson-morley-experiment-3d"],[data-fsim-id="sr-l10-s1-supplementalminkowski-space-and-metric-shell"],[data-fsim-id="sr-l10-s2-lorentz-transformation-vs-euclidean-rota-shell"],[data-fsim-id="sr-l11-s1-time-dilation-train-paradox-shell-updated"])) {
    & :where(:is(.shell-header,.top-bar,html[data-fsim-layout="qm-legacy"] :is(.title-bar,.app-header,.header-bar,header.upper-menu,header.sim-header,div.header,body > header)) :is(button,.shell-btn):not(#ask-euler):not(#shell-play):not(#playpause-btn):not(#btnPlayPause):not(#btnPlay):not(#playBtn):not(#playPauseBtn):not(#plB)){padding-right:var(--fsim-topbar-button-pad-r) !important;}
    & :where(:is(.shell-header,.top-bar,html[data-fsim-layout="qm-legacy"] :is(.title-bar,.app-header,.header-bar,header.upper-menu,header.sim-header,div.header,body > header)) :is(button,.shell-btn):not(#ask-euler):not(#shell-play):not(#playpause-btn):not(#btnPlayPause):not(#btnPlay):not(#playBtn):not(#playPauseBtn):not(#plB)){padding-left:var(--fsim-topbar-button-pad-l) !important;}
  }
  :where(html[data-fsim-id]:not(.fu-tight):not(.fu-tighter):not([data-fsim-id="cm-collisions"],[data-fsim-id="cm-galperins-billiard"],[data-fsim-id="cm-l29-the-centrifugal-force-shell"],[data-fsim-id="qm-a-k-vs-k-plot"],[data-fsim-id="qm-double-slit-exp-measurement"],[data-fsim-id="qm-double-slit-experiment"],[data-fsim-id="qm-finite-well-probability-plot"],[data-fsim-id="qm-harmonic-oscillator"],[data-fsim-id="qm-harmonic-oscillator-high-energies"],[data-fsim-id="qm-hydrogen-atom-wavefunctions"],[data-fsim-id="qm-quantum-tunneling-gaussian-wave"],[data-fsim-id="qm-quantum-tunneling-plane-wave"],[data-fsim-id="qm-single-gaussian-plot"],[data-fsim-id="qm-spin-x-measurement-probability"],[data-fsim-id="qm-transmission-probability-plot"],[data-fsim-id="qm-two-gaussian-superposition"],[data-fsim-id="sr-l00-s2-fly-on-a-boat-v2"],[data-fsim-id="sr-l07-s1-michelson-morley-experiment-3d"],[data-fsim-id="sr-l10-s2-lorentz-transformation-vs-euclidean-rota-shell"])) {
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/* GENERATED by tools/gen_contrast.py from a contrast probe of the live builds. Do not edit by hand. */
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html[data-fsim-id="qm-spin-measurement"]{& #wfEquation mjx-container.MathJax.CtxtMenu_Attached_0{color:#66696d !important}& #probBars div.prob-bar > div.prob-bar-label{color:#5c6a7d !important}& #probUpValue{color:#00756a !important}& #probDownValue{color:#00756a !important}& #alphaGroup div.input-row > span{color:#5c6a7d !important}& #betaGroup div.input-row > span{color:#5c6a7d !important}& #blochCoords{color:#5a6a80 !important}& #thetaDisplay{color:#00756a !important}& #phiDisplay{color:#00756a !important}& #historyList div.history-empty{color:#5a6a80 !important}}
html[data-fsim-id="qm-time-evolution-gaussian-fourier-comps"]{& #sb-sidebar div.panel-section > div.panel-section-title{color:#646a71 !important}& #statisticsSection div.panel-section-title{color:#646a71 !important}& #boxStats div.stat-row > span.stat-label-panel{color:#616a75 !important}& #sT{color:#00756a !important}& #sTn{color:#00756a !important}& #sNorm{color:#00756a !important}& #sNormPlot{color:#00756a !important}& #sCapt{color:#00756a !important}& #inq-cards div.inq-step > p > strong{color:#646a71 !important}}
html[data-fsim-id="qm-time-evolution-gaussian-wavepacket"]{& #atomicUnitsBadge{color:#896200 !important}& #boxK0 div.param-group > div.param-header > span.param-name{color:#646a71 !important}& #boxSigma div.param-group > div.param-header > span.param-name{color:#646a71 !important}& #boxMass div.param-group > div.param-header > span.param-name{color:#646a71 !important}& #boxSpeed div.param-group > div.param-header > span.param-name{color:#646a71 !important}& #boxToggles div.toggle-group > div.param-name{color:#646a71 !important}& #toggleReal{color:#3d6c9f !important}& #toggleImag{color:#6e5fa0 !important}& #inq-cards div.inq-step > p > strong{color:#646a71 !important}}
html[data-fsim-id="qm-time-evolution-qho-v2"]{& #narration-header div.narration-header-left > span{color:#616a75 !important}& #sb-sidebar div.panel-section > div.panel-section-title{color:#616a75 !important}& #boxX0 div.control-group > div.control-label{color:#5c6a7d !important}& #boxSigma div.control-group > div.control-label{color:#5c6a7d !important}& #stateIndicator div.state-name{color:#007946 !important}& #stateIndicator div.state-desc{color:#5a6a80 !important}& #inq-cards div.inq-step > p > strong{color:#646a71 !important}}
html[data-fsim-id="qm-transmission-probability-plot"]{& #boxCurrentValues div.output-row > span.output-name{color:#5a6a80 !important}& #statELabel{color:#5a6a80 !important}& #statKLabel{color:#5a6a80 !important}& #statEtaLabel{color:#5a6a80 !important}}
html[data-fsim-id="qm-vector-space-finite-vectors-updated"]{& #vecNote{color:#5a6a80 !important}& #vecBox div.vec-row > span.vec-paren{color:#5c6a7d !important}& #vecBox div.vec-row > span.vec-label.b-color{color:#00794e !important}& #comboBox div.combo-row > span.v-color{color:#cb0a6a !important}& #comboBox div.combo-row > span.combo-label{color:#5a6a80 !important}& #comboBox div.combo-row > span.plus-sign{color:#5a6a80 !important}& #comboBox div.combo-row > span.b-color{color:#00794e !important}& #linCombSteps div.step > span.v-color{color:#cb0a6a !important}& #linCombSteps div.step > span.b-color{color:#00794e !important}& #basisStatus span.status-badge.valid{color:#00794e !important}}
html[data-fsim-id="condensed-matter-cm-bloch-oscillations"]{& #readouts-toggle span.shell-caret{color:#516577 !important}& #panel-clock button.ro-group-head > span.ro-group-caret{color:#516577 !important}& #ro-clock-body p.ro-hint{color:#626977 !important}& #panel-live button.ro-group-head > span.ro-group-caret{color:#516577 !important}& #ro-live-body p.ro-hint{color:#626977 !important}& #panel-swing button.ro-group-head > span.ro-group-caret{color:#516577 !important}& #ro-swing-body p.ro-hint{color:#626977 !important}}
html[data-fsim-id="condensed-matter-cm-crystal-diffraction-2d-polished"]{& #readouts-toggle span.shell-caret{color:#516577 !important}& #panel-spot button.ro-group-head > span.ro-group-caret{color:#516577 !important}& #panel-measure button.ro-group-head > span.ro-group-caret{color:#516577 !important}& #ro-prod-row button.ro-group-head > span.ro-group-caret{color:#516577 !important}}
html[data-fsim-id="condensed-matter-cm-kronig-penney-bands-polished"]{& #readouts-toggle span.shell-caret{color:#516577 !important}& #panel-gap button.ro-group-head > span.ro-group-caret{color:#516577 !important}& #panel-energy button.ro-group-head > span.ro-group-caret{color:#516577 !important}& #panel-hint button.ro-group-head > span.ro-group-caret{color:#516577 !important}}
html[data-fsim-id="condensed-matter-cm-phonon-diatomic-chain-polished"]{& #readouts-toggle span.shell-caret{color:#516577 !important}& #panel-marker button.ro-group-head > span.ro-group-caret{color:#516577 !important}}
html[data-fsim-id="cm-cm-spinning-book-polished"]{& #axis-1 small{color:#516577 !important}& #axis-2 small{color:#516577 !important}& #axis-3 small{color:#516577 !important}& #ro-t{color:#3a60d7 !important}& #ro-T{color:#3a60d7 !important}& #ro-L{color:#3a60d7 !important}& #ro-turn{color:#3a60d7 !important}& #ro-est{color:#3a60d7 !important}}
html[data-fsim-id="condensed-matter-cm-superconductor-polished"]{& #val-kappa span.kv-type{color:#626977 !important}}
html[data-fsim-id="pp-feynman-diagram-sandbox"]{& #puzGoal{color:#626977 !important}& #grp-build div.shell-panel-body > div.sim-note.ht-hide{color:#626977 !important}& #roInv{color:#3a60d7 !important}& #resultPanel div.shell-panel-body > div.sim-note.ht-hide{color:#626977 !important}}
html[data-fsim-id="qm-infinite-potential-well"]{& #nDisplay{color:#05766a !important}& #boxLengthDisplay{color:#05766a !important}& #boxOverride div.toggle-row > span.toggle-label{color:#626977 !important}& #measurementRateDisplay{color:#05766a !important}& #histogramStats{color:#00794e !important}}
html[data-fsim-id="condensed-matter-mc-random-walker-eval-newcontract-polished"]{& #ro-steps{color:#3a60d7 !important}& #ro-spread{color:#3a60d7 !important}& #ro-pred{color:#3a60d7 !important}}
html[data-fsim-id="pp-navigating-the-eight-fold-way"]{& #grp-mode p.sim-sublabel{color:#223140 !important}& #grp-layout p.sim-sublabel{color:#223140 !important}& #ewCDisc{color:#828282 !important}& #panel-card div.sim-pbody > div.sim-box > p.sim-sublabel{color:#223140 !important}}
html[data-fsim-id="qm-qm-blackbody-spectrum-polished"]{& #val-fmax{color:#3a60d7 !important}& #val-total{color:#3a60d7 !important}}
html[data-fsim-id="qm-qm-compton-scattering-polished"]{& #ro-lp{color:#3a60d7 !important}& #ro-shift{color:#3a60d7 !important}& #ro-pct{color:#3a60d7 !important}}
html[data-fsim-id="condensed-matter-qs-rabi-bloch-sphere"]{& #box-omega div.ctrl-box-head > label > span.cx-star{color:#3a60d7 !important}}
html[data-fsim-id="condensed-matter-sm-energy-sharing"]{& #readouts-toggle span.shell-caret{color:#516577 !important}& #panel-total button.ro-group-head > span.ro-group-caret{color:#516577 !important}& #panel-avg button.ro-group-head > span.ro-group-caret{color:#516577 !important}& #panel-slope button.ro-group-head > span.ro-group-caret{color:#516577 !important}}
html[data-fsim-id="condensed-matter-sm-heat-capacity-steps-eval-newcontract-polished"]{& #ro-theta{color:#3a60d7 !important}& #ro-kbt{color:#3a60d7 !important}& #ro-c{color:#3a60d7 !important}& #ro-p0{color:#3a60d7 !important}}
html[data-fsim-id="condensed-matter-sm-identical-counting"]{& #guard-note{color:#3a60d7 !important}& #ro-mode-strip{color:#3a60d7 !important}}
html[data-fsim-id="qm-stern-gerlach-new"]{& #modeIndicator{color:#21737c !important}& #legendTitle{color:#5c6a7d !important}& #beamLegendItems div.beam-legend-item > span.beam-legend-label{color:#646a71 !important}& #beamLegendItems div.beam-legend-item > span.beam-legend-count{color:#5c6a7d !important}& #boxSpin div.control > div.control-header > span.control-value-display{color:#00756a !important}& #boxField div.control > div.control-header > span.control-value-display{color:#00756a !important}& #boxRate div.control > div.control-header > span.control-value-display{color:#00756a !important}}
html[data-fsim-id="pp-virtual-cloud-chamber"]{& #simBeam div.sim-box > p.sim-hint.ht-hide{color:#626977 !important}}
html[data-fsim-id="pp-virtual-particle-collider"]{& #simEvents{color:#3a60d7 !important}}
html[data-fsim-id="qm-wavefunctions-and-probability"]{& #rateValue{color:#007766 !important}& #animationSpeedValue{color:#007766 !important}& #momentumNote{color:#007946 !important}& #statBox div.convergence-bar > div.convergence-label{color:#626974 !important}}
}

/* ── _shared/shared-layers.css (unlayered) ── */
/* ════ SHARED LAYERS (Wave 3) · formerly copied into every sim; emitted UNLAYERED and delivered a second
   time just before the closing body tag so they keep their end-of-page cascade position. Canonical order: ask-euler < sheet-v2 < sheet-round3 < hide-tab < uniform-ui < gv-style. Scoped variants use :where(html[data-fsim-shared~=…]) (zero specificity). ════ */
/* fermi-sim shared fonts: the @font-face rules the sims embedded as data URIs, now served as files.
   Upload fonts/* to s3://…/fermi-sim/fonts/ (CORS via the fermi-sim/* CloudFront behaviour + SimpleCORS). */
@font-face{font-family:'DMSansUser';font-weight:600;font-style:normal;font-display:swap;src:url('https://d6jsp0m3kqowo.cloudfront.net/fermi-sim/fonts/DMSansUser-600.ttf') format('truetype');}
@font-face{font-family:'JetBrainsMonoNums';font-weight:600;font-style:normal;font-display:swap;src:url('https://d6jsp0m3kqowo.cloudfront.net/fermi-sim/fonts/JetBrainsMonoNums-600.ttf') format('truetype');}
@font-face{font-family:'Kalam';font-weight:400;font-style:normal;font-display:swap;src:url('https://d6jsp0m3kqowo.cloudfront.net/fermi-sim/fonts/Kalam-400.woff2') format('woff2');}
@font-face{font-family:'Kalam';font-weight:700;font-style:normal;font-display:swap;src:url('https://d6jsp0m3kqowo.cloudfront.net/fermi-sim/fonts/Kalam-700.woff2') format('woff2');}
@font-face{font-family:'Patrick Hand';font-weight:400;font-style:normal;font-display:swap;src:url('https://d6jsp0m3kqowo.cloudfront.net/fermi-sim/fonts/PatrickHand-400.woff2') format('woff2');}

/* ── ask-euler.v1 · 86 sims · scoped ── */
:where(html[data-fsim-shared~="ask-euler.v1"]) #ask-euler{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:6px;
    height:36px;
    padding:0 14px;
    box-sizing:border-box;
    flex-shrink:0;
    border:1px solid #163d30;
    border-radius:6px;
    background-color:#1E4D3A;
    color:#ffffff;
    font-family:var(--font-sans);
    font-size:13px;
    font-weight:600;
    line-height:1;
    white-space:nowrap;
    text-decoration:none;
    cursor:pointer;
    transition:background-color .15s ease,border-color .15s ease,box-shadow .15s ease,transform .15s ease;
}:where(html[data-fsim-shared~="ask-euler.v1"]) #ask-euler:visited{color:#ffffff;}:where(html[data-fsim-shared~="ask-euler.v1"]) #ask-euler:hover{
    background-color:#2D6E52;
    border-color:#245e45;
    color:#ffffff;
    box-shadow:0 2px 10px rgba(30,77,58,.28);
}:where(html[data-fsim-shared~="ask-euler.v1"]) #ask-euler:active{transform:translateY(1px);box-shadow:none;}:where(html[data-fsim-shared~="ask-euler.v1"]) #ask-euler:focus-visible{outline:2px solid #B6820C;outline-offset:2px;}:where(html[data-fsim-shared~="ask-euler.v1"]) .ask-euler-icon{font-size:15px;line-height:1;display:inline-block;transform:translateY(-.5px);}

@media (max-width:1200px){:where(html[data-fsim-shared~="ask-euler.v1"]) #ask-euler{padding:0 10px;gap:0;}:where(html[data-fsim-shared~="ask-euler.v1"]) #ask-euler .ask-euler-label{display:none;}
}
@media (prefers-reduced-motion:reduce){:where(html[data-fsim-shared~="ask-euler.v1"]) #ask-euler{transition:none;}:where(html[data-fsim-shared~="ask-euler.v1"]) #ask-euler:active{transform:none;}
}

/* ── ask-euler.v2 · 19 sims · scoped ── */
:where(html[data-fsim-shared~="ask-euler.v2"]) [data-euler-hidden]{display:none !important;}:where(html[data-fsim-shared~="ask-euler.v2"]) #ask-euler{display:inline-flex;align-items:center;justify-content:center;gap:7px;height:36px;
  padding:0 16px;margin-left:14px;box-sizing:border-box;flex-shrink:0;border:1px solid #163d30;
  border-radius:6px;background-color:#1E4D3A;color:#ffffff;font-family:inherit;font-size:13px;
  font-weight:600;line-height:1;white-space:nowrap;text-decoration:none;cursor:pointer;vertical-align:middle;
  transition:background-color .2s ease,border-color .2s ease,box-shadow .2s ease,transform .2s ease;}:where(html[data-fsim-shared~="ask-euler.v2"]) #ask-euler:visited{color:#ffffff;}:where(html[data-fsim-shared~="ask-euler.v2"]) #ask-euler:hover{background-color:#2D6E52;border-color:#245e45;color:#ffffff;box-shadow:0 2px 10px rgba(30,77,58,.28);}:where(html[data-fsim-shared~="ask-euler.v2"]) #ask-euler:active{transform:translateY(1px);box-shadow:none;}:where(html[data-fsim-shared~="ask-euler.v2"]) #ask-euler:focus-visible{outline:2px solid #B6820C;outline-offset:2px;}:where(html[data-fsim-shared~="ask-euler.v2"]) .ask-euler-icon{font-size:15px;line-height:1;display:inline-block;transform:translateY(-.5px);}
@media (max-width:1200px){:where(html[data-fsim-shared~="ask-euler.v2"]) #ask-euler{padding:0 11px;gap:0;}:where(html[data-fsim-shared~="ask-euler.v2"]) #ask-euler .ask-euler-label{display:none;}}
@media (prefers-reduced-motion:reduce){:where(html[data-fsim-shared~="ask-euler.v2"]) #ask-euler{transition:none;}:where(html[data-fsim-shared~="ask-euler.v2"]) #ask-euler:active{transform:none;}}

/* ── sheet-v2.v1 · 63 sims · scoped ── */
:where(html[data-fsim-shared~="sheet-v2.v1"]) .phys-body.ps-on{display:grid;grid-template-columns:190px minmax(0,1fr);gap:0 22px;align-items:start;}:where(html[data-fsim-shared~="sheet-v2.v1"]) .ps-rail{position:sticky;top:0;display:flex;flex-direction:column;gap:3px;padding:4px 0;}:where(html[data-fsim-shared~="sheet-v2.v1"]) .ps-rail-h{font-size:10.5px;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-mute);margin:0 0 6px 10px;}:where(html[data-fsim-shared~="sheet-v2.v1"]) .ps-rail button{all:unset;box-sizing:border-box;display:grid;grid-template-columns:22px 1fr 14px;align-items:center;gap:6px;
  padding:7px 10px;border-radius:8px;font-size:12.5px;line-height:1.3;color:var(--ink-mid);cursor:pointer;}:where(html[data-fsim-shared~="sheet-v2.v1"]) .ps-rail button:hover{background:var(--surface-soft);color:var(--text);}:where(html[data-fsim-shared~="sheet-v2.v1"]) .ps-rail button:focus-visible{outline:2px solid var(--accent);outline-offset:-2px;}:where(html[data-fsim-shared~="sheet-v2.v1"]) .ps-rail button .n{font:600 12px/1 'STIX Two Text',Georgia,serif;color:var(--ink-mute);}:where(html[data-fsim-shared~="sheet-v2.v1"]) .ps-rail button .t{color:var(--accent);font-size:11px;opacity:0;}:where(html[data-fsim-shared~="sheet-v2.v1"]) .ps-rail button.seen .t{opacity:1;}:where(html[data-fsim-shared~="sheet-v2.v1"]) .ps-rail button[aria-current="true"]{background:var(--surface-soft);color:var(--text);font-weight:600;box-shadow:inset 3px 0 0 var(--accent);}:where(html[data-fsim-shared~="sheet-v2.v1"]) .ps-rail button[aria-current="true"] .n{color:var(--accent);}:where(html[data-fsim-shared~="sheet-v2.v1"]) .ps-main{min-width:0;}:where(html[data-fsim-shared~="sheet-v2.v1"]) #phys-backdrop .phys-modal{height:calc(100vh - 104px);}:where(html[data-fsim-shared~="sheet-v2.v1"]) #phys-backdrop .phys-body{flex:1 1 auto;min-height:0;}:where(html[data-fsim-shared~="sheet-v2.v1"]) .ps-pager{flex-shrink:0;margin:0;padding:12px 28px 14px 240px;border-top:1px solid var(--line);}:where(html[data-fsim-shared~="sheet-v2.v1"]) .phys-body.ps-on .phys-art{max-width:none;}:where(html[data-fsim-shared~="sheet-v2.v1"]) .ps-sec[hidden]{display:none;}:where(html[data-fsim-shared~="sheet-v2.v1"]) .ps-h{display:flex;align-items:baseline;gap:12px;margin:0 0 12px;padding-bottom:10px;border-bottom:1px solid var(--line);}:where(html[data-fsim-shared~="sheet-v2.v1"]) .ps-no{font:600 20px/1 'STIX Two Text',Georgia,serif;color:var(--accent);}:where(html[data-fsim-shared~="sheet-v2.v1"]) .ps-h h3{margin:0;font:600 21px/1.25 'STIX Two Text',Georgia,serif;color:var(--text);}:where(html[data-fsim-shared~="sheet-v2.v1"]) .ps-sub{margin:18px 0 6px;font:600 15px/1.3 'STIX Two Text',Georgia,serif;color:var(--text);}:where(html[data-fsim-shared~="sheet-v2.v1"]) .ps-p{margin:8px 0;font-size:13.5px;line-height:1.62;color:var(--ink-mid);}:where(html[data-fsim-shared~="sheet-v2.v1"]) .ps-p b{color:var(--text);}:where(html[data-fsim-shared~="sheet-v2.v1"]) .ps-glance{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:14px;align-items:start;}:where(html[data-fsim-shared~="sheet-v2.v1"]) .ps-card{border:1px solid var(--line);border-radius:10px;padding:12px 14px;background:var(--surface-soft);}:where(html[data-fsim-shared~="sheet-v2.v1"]) .ps-card h4{margin:0 0 2px;font:600 15px/1.3 'STIX Two Text',Georgia,serif;color:var(--text);}:where(html[data-fsim-shared~="sheet-v2.v1"]) .fig.f0{margin:0;}:where(html[data-fsim-shared~="sheet-v2.v1"]) .phys-modal{width:min(1010px,96vw);}:where(html[data-fsim-shared~="sheet-v2.v1"]) .fig.f0 svg{max-width:320px;}:where(html[data-fsim-shared~="sheet-v2.v1"]) .ps-keys{list-style:none;margin:6px 0 0;padding:0;font-size:13px;line-height:1.55;color:var(--ink-mid);}:where(html[data-fsim-shared~="sheet-v2.v1"]) .ps-keys li{position:relative;padding-left:30px;margin:7px 0;}:where(html[data-fsim-shared~="sheet-v2.v1"]) .ps-keys b{color:var(--text);}:where(html[data-fsim-shared~="sheet-v2.v1"]) .ps-chip{position:absolute;left:0;top:.72em;width:18px;height:0;border-top:3px solid;}:where(html[data-fsim-shared~="sheet-v2.v1"]) .ps-chip.ps-dash{border-top-style:dashed;}:where(html[data-fsim-shared~="sheet-v2.v1"]) .ps-chip.ps-box{top:.4em;left:3px;height:9px;width:12px;border:1.5px solid var(--ink-mute);border-radius:3px;}:where(html[data-fsim-shared~="sheet-v2.v1"]) .ps-key{margin:12px 0;padding:11px 14px;border-radius:9px;background:rgba(59,155,143,.10);border:1px solid var(--accent-soft);
  font-size:13.5px;line-height:1.55;color:var(--text);}:where(html[data-fsim-shared~="sheet-v2.v1"]) .ps-note{font-size:12px;color:var(--ink-mute);margin:10px 0 0;}:where(html[data-fsim-shared~="sheet-v2.v1"]) .ps-ctl,:where(html[data-fsim-shared~="sheet-v2.v1"]) .ps-num{width:100%;border-collapse:collapse;font-size:12.5px;color:var(--ink-mid);margin:8px 0;}:where(html[data-fsim-shared~="sheet-v2.v1"]) .ps-ctl th,:where(html[data-fsim-shared~="sheet-v2.v1"]) .ps-num th{text-align:left;font-weight:600;font-size:11px;letter-spacing:.04em;text-transform:uppercase;color:var(--ink-mute);
  padding:6px 8px;border-bottom:1px solid var(--line);}:where(html[data-fsim-shared~="sheet-v2.v1"]) .ps-ctl td,:where(html[data-fsim-shared~="sheet-v2.v1"]) .ps-num td{padding:8px;border-bottom:1px solid var(--line);vertical-align:top;line-height:1.45;}:where(html[data-fsim-shared~="sheet-v2.v1"]) .ps-ctl td b{color:var(--text);}:where(html[data-fsim-shared~="sheet-v2.v1"]) .ps-ctl td small{color:var(--ink-mute);}:where(html[data-fsim-shared~="sheet-v2.v1"]) .ps-ctl td:nth-child(3){white-space:nowrap;font-family:var(--font-nums);font-size:12px;}:where(html[data-fsim-shared~="sheet-v2.v1"]) .ps-num td{font-family:var(--font-nums);color:var(--text);}:where(html[data-fsim-shared~="sheet-v2.v1"]) .ps-loc{all:unset;cursor:pointer;display:inline-grid;place-items:center;width:28px;height:28px;border-radius:7px;
  border:1px solid var(--line);color:var(--accent);font-size:15px;}:where(html[data-fsim-shared~="sheet-v2.v1"]) .ps-loc:hover{border-color:var(--accent);background:var(--surface-soft);}:where(html[data-fsim-shared~="sheet-v2.v1"]) .ps-loc:focus-visible{outline:2px solid var(--accent);}:where(html[data-fsim-shared~="sheet-v2.v1"]) .ps-try{display:flex;flex-wrap:wrap;align-items:center;gap:8px 10px;margin:18px 0 4px;padding:12px 14px;border-radius:10px;
  border:1px dashed var(--accent);background:linear-gradient(90deg,rgba(59,155,143,.12),transparent 80%);}:where(html[data-fsim-shared~="sheet-v2.v1"]) .ps-try-txt{flex:1 1 260px;font-size:13px;line-height:1.5;color:var(--text);}:where(html[data-fsim-shared~="sheet-v2.v1"]) .ps-try-tag{display:inline-block;margin-right:8px;padding:2px 8px;border-radius:999px;background:var(--accent);color:#fff;
  font-size:10.5px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;vertical-align:1px;}:where(html[data-fsim-shared~="sheet-v2.v1"]) .ps-watch{display:block;margin-top:3px;color:var(--ink-mid);}:where(html[data-fsim-shared~="sheet-v2.v1"]) .ps-try .seesim{margin:0;}:where(html[data-fsim-shared~="sheet-v2.v1"]) .ps-deep{margin:14px 0 0;border:1px solid var(--line);border-radius:9px;padding:9px 12px;}:where(html[data-fsim-shared~="sheet-v2.v1"]) .ps-deep summary{cursor:pointer;font-size:13px;font-weight:600;color:var(--text);}:where(html[data-fsim-shared~="sheet-v2.v1"]) .ps-myth{list-style:none;margin:6px 0;padding:0;font-size:13px;line-height:1.55;color:var(--ink-mid);}:where(html[data-fsim-shared~="sheet-v2.v1"]) .ps-myth li{margin:7px 0;padding-left:12px;border-left:2px solid var(--line);}:where(html[data-fsim-shared~="sheet-v2.v1"]) .ps-myth span{display:block;color:var(--text);font-style:italic;}:where(html[data-fsim-shared~="sheet-v2.v1"]) .ps-pager{display:flex;align-items:center;gap:10px;}:where(html[data-fsim-shared~="sheet-v2.v1"]) .ps-pager .ps-count{flex:1;text-align:center;font-size:12px;color:var(--ink-mute);}:where(html[data-fsim-shared~="sheet-v2.v1"]) .ps-pager button[disabled]{opacity:.35;cursor:default;}:where(html[data-fsim-shared~="sheet-v2.v1"]) #ps-watch{position:fixed;left:16px;bottom:16px;z-index:3100;width:min(360px,calc(100vw - 32px));
  background:var(--panel-2);border:1px solid var(--accent-soft);border-left:3px solid var(--accent);border-radius:10px;
  box-shadow:0 14px 36px rgba(0,0,0,.45);padding:11px 13px 11px;color:var(--text);font-size:12.5px;line-height:1.45;
  opacity:0;transform:translateY(8px);transition:opacity .2s,transform .2s;pointer-events:none;}:where(html[data-fsim-shared~="sheet-v2.v1"]) #ps-watch.show{opacity:1;transform:none;pointer-events:auto;}:where(html[data-fsim-shared~="sheet-v2.v1"]) #ps-watch .w-k{font-size:10.5px;letter-spacing:.07em;text-transform:uppercase;color:var(--accent);font-weight:700;}:where(html[data-fsim-shared~="sheet-v2.v1"]) #ps-watch .w-m{margin:4px 0 10px;color:var(--ink-mid);}:where(html[data-fsim-shared~="sheet-v2.v1"]) #ps-watch .w-m b{color:var(--text);}:where(html[data-fsim-shared~="sheet-v2.v1"]) #ps-watch .w-b{display:flex;gap:8px;flex-wrap:wrap;}:where(html[data-fsim-shared~="sheet-v2.v1"]) #ps-watch .w-x{position:absolute;top:6px;right:8px;all:unset;cursor:pointer;color:var(--ink-mute);font-size:14px;padding:2px 6px;}:where(html[data-fsim-shared~="sheet-v2.v1"]) #ps-watch .w-x{position:absolute;top:6px;right:6px;}:where(html[data-fsim-shared~="sheet-v2.v1"]) #ps-watch .w-k{padding-right:28px;}:where(html[data-fsim-shared~="sheet-v2.v1"]) .ps-spot{outline:3px solid var(--accent) !important;outline-offset:3px;border-radius:8px;animation:psSpot 1.1s ease-in-out 3;}
@keyframes psSpot{50%{outline-color:transparent;}}
@media(max-width:760px){:where(html[data-fsim-shared~="sheet-v2.v1"]) .phys-body.ps-on{grid-template-columns:1fr;}:where(html[data-fsim-shared~="sheet-v2.v1"]) .ps-rail{position:static;flex-direction:row;overflow-x:auto;gap:4px;padding-bottom:8px;margin-bottom:6px;border-bottom:1px solid var(--line);}:where(html[data-fsim-shared~="sheet-v2.v1"]) .ps-rail-h{display:none;}:where(html[data-fsim-shared~="sheet-v2.v1"]) .ps-pager{padding:10px 16px 12px;}:where(html[data-fsim-shared~="sheet-v2.v1"]) .ps-rail button{grid-template-columns:auto;white-space:nowrap;}:where(html[data-fsim-shared~="sheet-v2.v1"]) .ps-rail button .l,:where(html[data-fsim-shared~="sheet-v2.v1"]) .ps-rail button .t{display:none;}:where(html[data-fsim-shared~="sheet-v2.v1"]) .ps-glance{grid-template-columns:1fr;}:where(html[data-fsim-shared~="sheet-v2.v1"]) .ps-ctl td:nth-child(3){white-space:normal;}
}
@media(prefers-reduced-motion:reduce){:where(html[data-fsim-shared~="sheet-v2.v1"]) #ps-watch{transition:none;}:where(html[data-fsim-shared~="sheet-v2.v1"]) .ps-spot{animation:none;}}

/* ── sheet-v2.v2 · 10 sims · scoped ── */
:where(html[data-fsim-shared~="sheet-v2.v2"]) .phys-body.ps-on{display:grid;grid-template-columns:190px minmax(0,1fr);gap:0 22px;align-items:start;}:where(html[data-fsim-shared~="sheet-v2.v2"]) .ps-rail{position:sticky;top:0;display:flex;flex-direction:column;gap:3px;padding:4px 0;}:where(html[data-fsim-shared~="sheet-v2.v2"]) .ps-rail-h{font-size:10.5px;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-mute);margin:0 0 6px 10px;}:where(html[data-fsim-shared~="sheet-v2.v2"]) .ps-rail button{all:unset;box-sizing:border-box;display:grid;grid-template-columns:22px 1fr 14px;align-items:center;gap:6px;
  padding:7px 10px;border-radius:8px;font-size:12.5px;line-height:1.3;color:var(--ink-mid);cursor:pointer;}:where(html[data-fsim-shared~="sheet-v2.v2"]) .ps-rail button:hover{background:var(--surface-soft);color:var(--text);}:where(html[data-fsim-shared~="sheet-v2.v2"]) .ps-rail button:focus-visible{outline:2px solid var(--accent);outline-offset:-2px;}:where(html[data-fsim-shared~="sheet-v2.v2"]) .ps-rail button .n{font:600 12px/1 'STIX Two Text',Georgia,serif;color:var(--ink-mute);}:where(html[data-fsim-shared~="sheet-v2.v2"]) .ps-rail button .t{color:var(--accent);font-size:11px;opacity:0;}:where(html[data-fsim-shared~="sheet-v2.v2"]) .ps-rail button.seen .t{opacity:1;}:where(html[data-fsim-shared~="sheet-v2.v2"]) .ps-rail button[aria-current="true"]{background:var(--surface-soft);color:var(--text);font-weight:600;box-shadow:inset 3px 0 0 var(--accent);}:where(html[data-fsim-shared~="sheet-v2.v2"]) .ps-rail button[aria-current="true"] .n{color:var(--accent);}:where(html[data-fsim-shared~="sheet-v2.v2"]) .ps-main{min-width:0;}:where(html[data-fsim-shared~="sheet-v2.v2"]) #phys-backdrop .phys-modal{height:calc(100vh - 104px);}:where(html[data-fsim-shared~="sheet-v2.v2"]) #phys-backdrop .phys-body{flex:1 1 auto;min-height:0;}:where(html[data-fsim-shared~="sheet-v2.v2"]) .ps-pager{flex-shrink:0;margin:0;padding:12px 28px 14px 240px;border-top:1px solid var(--line);}:where(html[data-fsim-shared~="sheet-v2.v2"]) .phys-body.ps-on .phys-art{max-width:none;}:where(html[data-fsim-shared~="sheet-v2.v2"]) .ps-sec[hidden]{display:none;}:where(html[data-fsim-shared~="sheet-v2.v2"]) .ps-h{display:flex;align-items:baseline;gap:12px;margin:0 0 12px;padding-bottom:10px;border-bottom:1px solid var(--line);}:where(html[data-fsim-shared~="sheet-v2.v2"]) .ps-no{font:600 20px/1 'STIX Two Text',Georgia,serif;color:var(--accent);}:where(html[data-fsim-shared~="sheet-v2.v2"]) .ps-h h3{margin:0;font:600 21px/1.25 'STIX Two Text',Georgia,serif;color:var(--text);}:where(html[data-fsim-shared~="sheet-v2.v2"]) .ps-sub{margin:18px 0 6px;font:600 15px/1.3 'STIX Two Text',Georgia,serif;color:var(--text);}:where(html[data-fsim-shared~="sheet-v2.v2"]) .ps-p{margin:8px 0;font-size:13.5px;line-height:1.62;color:var(--ink-mid);}:where(html[data-fsim-shared~="sheet-v2.v2"]) .ps-p b{color:var(--text);}:where(html[data-fsim-shared~="sheet-v2.v2"]) .ps-glance{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:14px;align-items:start;}:where(html[data-fsim-shared~="sheet-v2.v2"]) .ps-card{border:1px solid var(--line);border-radius:10px;padding:12px 14px;background:var(--surface-soft);}:where(html[data-fsim-shared~="sheet-v2.v2"]) .ps-card h4{margin:0 0 2px;font:600 15px/1.3 'STIX Two Text',Georgia,serif;color:var(--text);}:where(html[data-fsim-shared~="sheet-v2.v2"]) .fig.f0{margin:0;}:where(html[data-fsim-shared~="sheet-v2.v2"]) .phys-modal{width:min(1010px,96vw);}:where(html[data-fsim-shared~="sheet-v2.v2"]) .fig.f0 svg{max-width:320px;}:where(html[data-fsim-shared~="sheet-v2.v2"]) .ps-keys{list-style:none;margin:6px 0 0;padding:0;font-size:13px;line-height:1.55;color:var(--ink-mid);}:where(html[data-fsim-shared~="sheet-v2.v2"]) .ps-keys li{position:relative;padding-left:30px;margin:7px 0;}:where(html[data-fsim-shared~="sheet-v2.v2"]) .ps-keys b{color:var(--text);}:where(html[data-fsim-shared~="sheet-v2.v2"]) .ps-chip{position:absolute;left:0;top:.72em;width:18px;height:0;border-top:3px solid;}:where(html[data-fsim-shared~="sheet-v2.v2"]) .ps-chip.ps-dash{border-top-style:dashed;}:where(html[data-fsim-shared~="sheet-v2.v2"]) .ps-chip.ps-box{top:.4em;left:3px;height:9px;width:12px;border:1.5px solid var(--ink-mute);border-radius:3px;}:where(html[data-fsim-shared~="sheet-v2.v2"]) .ps-key{margin:12px 0;padding:11px 14px;border-radius:9px;background:rgba(59,155,143,.10);border:1px solid var(--accent-soft);
  font-size:13.5px;line-height:1.55;color:var(--text);}:where(html[data-fsim-shared~="sheet-v2.v2"]) .ps-note{font-size:12px;color:var(--ink-mute);margin:10px 0 0;}:where(html[data-fsim-shared~="sheet-v2.v2"]) .ps-ctl,:where(html[data-fsim-shared~="sheet-v2.v2"]) .ps-num{width:100%;border-collapse:collapse;font-size:12.5px;color:var(--ink-mid);margin:8px 0;}:where(html[data-fsim-shared~="sheet-v2.v2"]) .ps-ctl th,:where(html[data-fsim-shared~="sheet-v2.v2"]) .ps-num th{text-align:left;font-weight:600;font-size:11px;letter-spacing:.04em;text-transform:uppercase;color:var(--ink-mute);
  padding:6px 8px;border-bottom:1px solid var(--line);}:where(html[data-fsim-shared~="sheet-v2.v2"]) .ps-ctl td,:where(html[data-fsim-shared~="sheet-v2.v2"]) .ps-num td{padding:8px;border-bottom:1px solid var(--line);vertical-align:top;line-height:1.45;}:where(html[data-fsim-shared~="sheet-v2.v2"]) .ps-ctl td b{color:var(--text);}:where(html[data-fsim-shared~="sheet-v2.v2"]) .ps-ctl td small{color:var(--ink-mute);}:where(html[data-fsim-shared~="sheet-v2.v2"]) .ps-ctl td:nth-child(3){white-space:nowrap;font-family:var(--font-nums);font-size:12px;}:where(html[data-fsim-shared~="sheet-v2.v2"]) .ps-num td{font-family:var(--font-nums);color:var(--text);}:where(html[data-fsim-shared~="sheet-v2.v2"]) .ps-loc{all:unset;cursor:pointer;display:inline-grid;place-items:center;width:28px;height:28px;border-radius:7px;
  border:1px solid var(--line);color:var(--accent);font-size:15px;}:where(html[data-fsim-shared~="sheet-v2.v2"]) .ps-loc:hover{border-color:var(--accent);background:var(--surface-soft);}:where(html[data-fsim-shared~="sheet-v2.v2"]) .ps-loc:focus-visible{outline:2px solid var(--accent);}:where(html[data-fsim-shared~="sheet-v2.v2"]) .ps-try{display:flex;flex-wrap:wrap;align-items:center;gap:8px 10px;margin:18px 0 4px;padding:12px 14px;border-radius:10px;
  border:1px dashed var(--accent);background:linear-gradient(90deg,rgba(59,155,143,.12),transparent 80%);}:where(html[data-fsim-shared~="sheet-v2.v2"]) .ps-try-txt{flex:1 1 260px;font-size:13px;line-height:1.5;color:var(--text);}:where(html[data-fsim-shared~="sheet-v2.v2"]) .ps-try-tag{display:inline-block;margin-right:8px;padding:2px 8px;border-radius:999px;background:var(--accent);color:#fff;
  font-size:10.5px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;vertical-align:1px;}:where(html[data-fsim-shared~="sheet-v2.v2"]) .ps-watch{display:block;margin-top:3px;color:var(--ink-mid);}:where(html[data-fsim-shared~="sheet-v2.v2"]) .ps-try .seesim{margin:0;}:where(html[data-fsim-shared~="sheet-v2.v2"]) .ps-deep{margin:14px 0 0;border:1px solid var(--line);border-radius:9px;padding:9px 12px;}:where(html[data-fsim-shared~="sheet-v2.v2"]) .ps-deep summary{cursor:pointer;font-size:13px;font-weight:600;color:var(--text);}:where(html[data-fsim-shared~="sheet-v2.v2"]) .ps-myth{list-style:none;margin:6px 0;padding:0;font-size:13px;line-height:1.55;color:var(--ink-mid);}:where(html[data-fsim-shared~="sheet-v2.v2"]) .ps-myth li{margin:7px 0;padding-left:12px;border-left:2px solid var(--line);}:where(html[data-fsim-shared~="sheet-v2.v2"]) .ps-myth span{display:block;color:var(--text);font-style:italic;}:where(html[data-fsim-shared~="sheet-v2.v2"]) .ps-pager{display:flex;align-items:center;gap:10px;}:where(html[data-fsim-shared~="sheet-v2.v2"]) .ps-pager .ps-count{flex:1;text-align:center;font-size:12px;color:var(--ink-mute);}:where(html[data-fsim-shared~="sheet-v2.v2"]) .ps-pager button[disabled]{opacity:.35;cursor:default;}:where(html[data-fsim-shared~="sheet-v2.v2"]) #ps-watch{position:fixed;left:16px;bottom:16px;z-index:3100;width:min(360px,calc(100vw - 32px));
  background:var(--panel-2);border:1px solid var(--accent-soft);border-left:3px solid var(--accent);border-radius:10px;
  box-shadow:0 14px 36px rgba(0,0,0,.45);padding:11px 13px 11px;color:var(--text);font-size:12.5px;line-height:1.45;
  opacity:0;transform:translateY(8px);transition:opacity .2s,transform .2s;pointer-events:none;}:where(html[data-fsim-shared~="sheet-v2.v2"]) #ps-watch.show{opacity:1;transform:none;pointer-events:auto;}:where(html[data-fsim-shared~="sheet-v2.v2"]) #ps-watch .w-k{font-size:10.5px;letter-spacing:.07em;text-transform:uppercase;color:var(--accent);font-weight:700;}:where(html[data-fsim-shared~="sheet-v2.v2"]) #ps-watch .w-m{margin:4px 0 10px;color:var(--ink-mid);}:where(html[data-fsim-shared~="sheet-v2.v2"]) #ps-watch .w-m b{color:var(--text);}:where(html[data-fsim-shared~="sheet-v2.v2"]) #ps-watch .w-b{display:flex;gap:8px;flex-wrap:wrap;}:where(html[data-fsim-shared~="sheet-v2.v2"]) #ps-watch .w-x{position:absolute;top:6px;right:8px;all:unset;cursor:pointer;color:var(--ink-mute);font-size:14px;padding:2px 6px;}:where(html[data-fsim-shared~="sheet-v2.v2"]) #ps-watch .w-x{position:absolute;top:6px;right:6px;}:where(html[data-fsim-shared~="sheet-v2.v2"]) .ps-spot{outline:3px solid var(--accent) !important;outline-offset:3px;border-radius:8px;animation:psSpot 1.1s ease-in-out 3;}
@keyframes psSpot{50%{outline-color:transparent;}}
@media(max-width:760px){:where(html[data-fsim-shared~="sheet-v2.v2"]) .phys-body.ps-on{grid-template-columns:1fr;}:where(html[data-fsim-shared~="sheet-v2.v2"]) .ps-rail{position:static;flex-direction:row;overflow-x:auto;gap:4px;padding-bottom:8px;margin-bottom:6px;border-bottom:1px solid var(--line);}:where(html[data-fsim-shared~="sheet-v2.v2"]) .ps-rail-h{display:none;}:where(html[data-fsim-shared~="sheet-v2.v2"]) .ps-pager{padding:10px 16px 12px;}:where(html[data-fsim-shared~="sheet-v2.v2"]) .ps-rail button{grid-template-columns:auto;white-space:nowrap;}:where(html[data-fsim-shared~="sheet-v2.v2"]) .ps-rail button .l,:where(html[data-fsim-shared~="sheet-v2.v2"]) .ps-rail button .t{display:none;}:where(html[data-fsim-shared~="sheet-v2.v2"]) .ps-glance{grid-template-columns:1fr;}:where(html[data-fsim-shared~="sheet-v2.v2"]) .ps-ctl td:nth-child(3){white-space:normal;}
}
@media(prefers-reduced-motion:reduce){:where(html[data-fsim-shared~="sheet-v2.v2"]) #ps-watch{transition:none;}:where(html[data-fsim-shared~="sheet-v2.v2"]) .ps-spot{animation:none;}}

/* ── sheet-round3 · 116 sims ── */

/* round 3 — spoiler gate, footer jump, live card, a11y, phone, light theme */
.ps-gate{margin:30px auto;max-width:520px;padding:18px 20px;border:1px solid var(--accent-soft);border-radius:12px;background:var(--surface-soft);
  font-size:13.5px;line-height:1.55;color:var(--ink-mid);}
.ps-gate b{color:var(--text);}
.ps-gate b:focus{outline:none;}
.ps-gate-b{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px;}
.ps-rail button.locked .l{opacity:.55;}
.ps-rail-k{margin:10px 0 0 10px;font-size:11px;color:var(--ink-mute);}
.ps-rail-k span{color:var(--accent);}
.ps-h h3:focus{outline:none;}
.ps-pager .ps-more{flex:1;max-width:220px;margin:0 auto;}
#ps-more[hidden],.ps-count[hidden]{display:none !important;}
#ps-watch{visibility:hidden;transition:opacity .2s,transform .2s,visibility 0s linear .2s;}
#ps-watch.show{visibility:visible;transition-delay:0s;}
#ps-watch .w-live{margin:-4px 0 10px;padding:6px 9px;border-radius:7px;background:var(--surface-soft);font-family:var(--font-nums);font-size:12.5px;color:var(--ink-mid);}
#ps-watch .w-live b{color:var(--text);}
@media(max-width:760px){
  .phys-body.ps-on{display:block;}
  .ps-rail{margin-bottom:14px;padding-bottom:10px;}
  .ps-rail button[aria-current="true"] .l{display:inline;}
  .ps-rail-k{display:none;}
  .ps-gate{margin:10px 0;}
  #ps-watch{left:0;right:0;bottom:0;width:auto;border-radius:12px 12px 0 0;border-left:1px solid var(--accent-soft);border-top:3px solid var(--accent);}
}
@media(max-width:420px){ .ps-pager .ps-count{display:none;} .ps-pager{gap:6px;} }

/* ── hide-tab.v1 · 86 sims · scoped ── */
:where(html[data-fsim-shared~="hide-tab.v1"]) #shell-maximize{display:none !important;}:where(html[data-fsim-shared~="hide-tab.v1"]) #sb-hide-tab{position:fixed;top:50%;right:0;transform:translateY(-50%);z-index:2900;
  display:flex;flex-direction:column;align-items:center;gap:6px;padding:12px 5px;
  background:#10b981;color:#fff;border:1px solid #059669;border-right:none;border-radius:8px 0 0 8px;
  box-shadow:-3px 0 12px rgba(0,0,0,.28);cursor:pointer;font:700 11px/1 'DM Sans',system-ui,sans-serif;
  letter-spacing:.06em;text-transform:uppercase;}:where(html[data-fsim-shared~="hide-tab.v1"]) #sb-hide-tab:hover{background:#059669;}:where(html[data-fsim-shared~="hide-tab.v1"]) #sb-hide-tab:focus-visible{outline:2px solid #fff;outline-offset:-4px;}:where(html[data-fsim-shared~="hide-tab.v1"]) #sb-hide-tab .sb-label{writing-mode:vertical-rl;transform:rotate(180deg);white-space:nowrap;}:where(html[data-fsim-shared~="hide-tab.v1"]) #sb-hide-tab .sb-arrow{font-size:13px;line-height:1;}

/* ── hide-tab.v2 · 18 sims · scoped ── */
html.sb-collapsed:where([data-fsim-shared~="hide-tab.v2"]) .sb-target{display:none !important;}:where(html[data-fsim-shared~="hide-tab.v2"]) #sb-hide-tab{position:fixed;top:50%;right:0;transform:translateY(-50%);z-index:150;
  display:flex;flex-direction:column;align-items:center;gap:6px;padding:12px 5px;
  background:#10b981;color:#fff;border:1px solid #059669;border-right:none;border-radius:8px 0 0 8px;
  box-shadow:-3px 0 12px rgba(0,0,0,.28);cursor:pointer;font:700 11px/1 'DM Sans',system-ui,sans-serif;
  letter-spacing:.06em;text-transform:uppercase;}:where(html[data-fsim-shared~="hide-tab.v2"]) #sb-hide-tab:hover{background:#059669;}:where(html[data-fsim-shared~="hide-tab.v2"]) #sb-hide-tab:focus-visible{outline:2px solid #fff;outline-offset:-4px;}:where(html[data-fsim-shared~="hide-tab.v2"]) #sb-hide-tab .sb-label{writing-mode:vertical-rl;transform:rotate(180deg);white-space:nowrap;}:where(html[data-fsim-shared~="hide-tab.v2"]) #sb-hide-tab .sb-arrow{font-size:13px;line-height:1;}

/* ── uniform-ui · 82 sims · scoped ── */


@media (min-width:1001px){:where(html[data-fsim-shared~="uniform-ui"]) #ask-euler{gap:6px !important;padding:0 14px !important;}:where(html[data-fsim-shared~="uniform-ui"]) #ask-euler .ask-euler-label,:where(html[data-fsim-shared~="uniform-ui"]) #btn-gi > span,:where(html[data-fsim-shared~="uniform-ui"]) #btn-cg > span{display:inline !important;}:where(html[data-fsim-shared~="uniform-ui"]) .shell-header{flex-wrap:nowrap !important;}:where(html[data-fsim-shared~="uniform-ui"]) .shell-header > .shell-title{min-width:0;flex:0 1 auto;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}:where(html[data-fsim-shared~="uniform-ui"]) .shell-header > .shell-group,:where(html[data-fsim-shared~="uniform-ui"]) .shell-header > .shell-controls{flex-shrink:0;}
}:where(html[data-fsim-shared~="uniform-ui"]) #btn-gi,:where(html[data-fsim-shared~="uniform-ui"]) #btn-cg,:where(html[data-fsim-shared~="uniform-ui"]) #toggle-formal{font-family:'DMSansUser','DM Sans',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif !important;font-size:13px !important;font-weight:400 !important;letter-spacing:normal !important;}:where(html[data-fsim-shared~="uniform-ui"]) #phys-backdrop,:where(html[data-fsim-shared~="uniform-ui"]) #ps-watch,:where(html[data-fsim-shared~="uniform-ui"]) #phys-toast{--text:#e2e8f0;--ink-mid:#cbd5e1;--ink-mute:#9ca3af;--mut:#cbd5e1;--accent:#3b9b8f;--accent-soft:rgba(59,155,143,.35);
  --panel-2:#0f1a1d;--surface-soft:rgba(6,14,17,.92);--border:rgba(19,49,49,.45);--line:rgba(19,49,49,.45);
  --ctrl-bg:rgba(30,77,58,.15);--ctrl-border:rgba(30,77,58,.50);
  --font-sans:'DMSansUser','DM Sans',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;--font-nums:'JetBrainsMonoNums','JetBrains Mono',ui-monospace,monospace;}:where(html[data-fsim-shared~="uniform-ui"]) body.light-theme #phys-backdrop,:where(html[data-fsim-shared~="uniform-ui"]) body.light-theme #ps-watch,:where(html[data-fsim-shared~="uniform-ui"]) body.light-theme #phys-toast,html[data-theme="light"]:where([data-fsim-shared~="uniform-ui"]) #phys-backdrop,html[data-theme="light"]:where([data-fsim-shared~="uniform-ui"]) #ps-watch,html[data-theme="light"]:where([data-fsim-shared~="uniform-ui"]) #phys-toast{--text:#0f172a;--ink-mid:#334155;--ink-mute:#6b7280;--mut:#334155;--accent:#2a8a7e;--accent-soft:rgba(42,138,126,.35);
  --panel-2:#e5e7eb;--surface-soft:rgba(241,245,249,.96);--border:rgba(51,65,85,.18);--line:rgba(51,65,85,.18);
  --ctrl-bg:rgba(30,77,58,.08);--ctrl-border:rgba(30,77,58,.35);}:where(html[data-fsim-shared~="uniform-ui"]) #phys-backdrop,:where(html[data-fsim-shared~="uniform-ui"]) #ps-watch,:where(html[data-fsim-shared~="uniform-ui"]) #phys-toast{font-family:var(--font-sans);line-height:normal;}html:not([data-theme="light"]):where([data-fsim-shared~="uniform-ui"]) body:not(.light-theme):not(.theme-light):not(.theme-bright):not(.light-mode) #inq-cards .inq-step > h4{color:#e2e8f0 !important;}html:not([data-theme="light"]):where([data-fsim-shared~="uniform-ui"]) body:not(.light-theme):not(.theme-light):not(.theme-bright):not(.light-mode) #inq-cards .inq-step > p:not([class]){color:#cbd5e1 !important;}:where(html[data-fsim-shared~="uniform-ui"]) #inq-cards .inq-step > h4{font-size:14px !important;font-weight:600 !important;line-height:1.35 !important;}:where(html[data-fsim-shared~="uniform-ui"]) #inq-cards .inq-step > p:not([class]){font-size:14px !important;line-height:1.55 !important;}:where(html[data-fsim-shared~="uniform-ui"]) #inq-cards .inq-step button.choice{font-size:13px !important;line-height:1.5 !important;}:where(html[data-fsim-shared~="uniform-ui"]) [data-fu-pb]{font-family:'DMSansUser','DM Sans',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif !important;font-size:13px !important;}html.fu-tight:where([data-fsim-shared~="uniform-ui"]) [data-fu-hdr],html.fu-tight:where([data-fsim-shared~="uniform-ui"]) [data-fu-hdr] > *,html.fu-tight:where([data-fsim-shared~="uniform-ui"]) [data-fu-hdr] > * > *,html.fu-tight:where([data-fsim-shared~="uniform-ui"]) [data-fu-hdr] > * > * > *{column-gap:6px !important;}html.fu-tight:where([data-fsim-shared~="uniform-ui"]) [data-fu-hdr]{padding-left:12px !important;padding-right:12px !important;}html.fu-tight:where([data-fsim-shared~="uniform-ui"]) [data-fu-hdr] :is(button,select,label.shell-btn){padding-left:9px !important;padding-right:9px !important;}html.fu-tight:where([data-fsim-shared~="uniform-ui"]) #ask-euler{padding:0 10px !important;}html.fu-tight:where([data-fsim-shared~="uniform-ui"]) [data-fu-title]{letter-spacing:.2px !important;}html.fu-tighter:where([data-fsim-shared~="uniform-ui"]) [data-fu-sec]{display:none !important;}html.fu-tighter:where([data-fsim-shared~="uniform-ui"]) [data-fu-hdr],html.fu-tighter:where([data-fsim-shared~="uniform-ui"]) [data-fu-shrink]{flex-wrap:nowrap !important;}html.fu-tighter:where([data-fsim-shared~="uniform-ui"]) [data-fu-shrink]{min-width:0 !important;flex-shrink:1 !important;}html.fu-tighter:where([data-fsim-shared~="uniform-ui"]) [data-fu-title]{min-width:0 !important;overflow:hidden !important;text-overflow:ellipsis !important;white-space:nowrap !important;}

/* ── gv-style · 116 sims ── */




#gv-start,#gv-tour,#gv-free,#gv-playtip,#gv-hint{--chalk:#f7f5ee;--chalk2:#e6e3d8;--chalk3:#b3bdb6;--yellow:#fbe38a;--board:#22372f;--board2:#1a2d26;
  --wood:#8d5b33;--wood-hi:#a8713f;--wood2:#5a381d;
  --hand:'Kalam','Chalkboard SE','Segoe Print','Bradley Hand',cursive;
  --print:'Patrick Hand','Chalkboard SE','Segoe Print','Comic Sans MS',cursive;}
.gv-board{position:relative;color:var(--chalk);font-family:var(--print);border-radius:5px;text-align:left;
  background:radial-gradient(ellipse 60% 40% at 18% 8%,rgba(255,255,255,.045),transparent 70%),
    radial-gradient(ellipse 50% 30% at 90% 100%,rgba(255,255,255,.05),transparent 70%),
    linear-gradient(165deg,var(--board),var(--board2));
  box-shadow:inset 0 1px 0 rgba(255,255,255,.05),inset 0 0 24px rgba(0,0,0,.4),
    0 0 0 3px var(--wood-hi),0 0 0 7px var(--wood),0 0 0 9px var(--wood2),0 18px 40px rgba(0,0,0,.5);
  -webkit-font-smoothing:antialiased;letter-spacing:normal;line-height:normal;}
.gv-board::before{content:"";position:absolute;inset:-7px;pointer-events:none;border:4px solid transparent;
  border-image:repeating-linear-gradient(90deg,rgba(0,0,0,.14) 0 1px,transparent 1px 4px,rgba(255,255,255,.06) 4px 5px,transparent 5px 9px) 4;}
.gv-board b{font-weight:400;color:#fff;}
.gv-hand{border:1.6px solid rgba(247,245,238,.62);border-radius:255px 12px 225px 12px/12px 225px 12px 255px;}
.gv-write{display:inline-block;clip-path:inset(-4px 100% -6px 0);animation:gvWrite .55s cubic-bezier(.35,.1,.3,1) forwards;}
@keyframes gvWrite{to{clip-path:inset(-4px -4px -6px 0);}}
.gv-w{opacity:0;display:inline-block;transform:translateY(3px);animation:gvWord .28s ease-out forwards;}
@keyframes gvWord{to{opacity:1;transform:none;}}
.gv-underline{display:block;width:100%;height:8px;}
.gv-underline path{fill:none;stroke:var(--yellow);stroke-width:2;stroke-linecap:round;stroke-dasharray:1;stroke-dashoffset:1;animation:gvDraw .45s .45s ease-out forwards;opacity:.85;}
@keyframes gvDraw{to{stroke-dashoffset:0;}}
.gv-erasing .gv-body,.gv-erasing .gv-head .gv-chap{animation:gvErase .18s ease-in forwards;}
@keyframes gvErase{to{opacity:0;transform:translateX(10px);filter:blur(1px);}}
.gv-textbtn{font:inherit;color:var(--chalk2);background:none;border:0;cursor:pointer;padding:2px 4px;text-decoration:underline dotted;text-underline-offset:4px;}
.gv-textbtn:hover{color:#fff;}
.gv-cbtn{font:18px/1 var(--print);color:var(--chalk);background:transparent;cursor:pointer;padding:6px 12px 5px;white-space:nowrap;transition:background .15s,transform .15s;}
.gv-cbtn:hover{background:rgba(255,255,255,.07);transform:translateY(-1px);}
.gv-cbtn:disabled{opacity:.3;cursor:default;transform:none;}
.gv-cbtn.primary{color:#1e2320;background:var(--yellow);border-color:var(--yellow);}
.gv-cbtn.primary:hover{background:#fff0b8;}

/* ---------- start board ---------- */
#gv-start{position:fixed;inset:0;z-index:5600;display:flex;align-items:center;justify-content:center;padding:24px;
  background:radial-gradient(ellipse at 50% 45%,rgba(4,8,12,.45),rgba(4,8,12,.72));backdrop-filter:blur(2px);-webkit-backdrop-filter:blur(2px);}
#gv-start[hidden]{display:none;}
#gv-start .gv-board{box-sizing:border-box;width:min(500px,100%);padding:30px 32px 36px;text-align:center;animation:gvIn .4s cubic-bezier(.2,.8,.2,1);}
@keyframes gvIn{from{opacity:0;transform:translateY(12px) scale(.985);}to{opacity:1;transform:none;}}
.gv-kicker{margin:0;font:18px var(--print);color:var(--chalk3);letter-spacing:.02em;}
#gv-start h2{margin:2px 0 0;font:700 38px/1.15 var(--hand);color:#fff;letter-spacing:.005em;}
#gv-start .gv-titlewrap{display:inline-block;max-width:100%;}
.gv-blurb{margin:14px auto 26px;max-width:410px;font:19px/1.45 var(--print);color:var(--chalk2);}
.gv-choices{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.gv-choice{display:flex;flex-direction:column;align-items:center;gap:4px;padding:15px 10px 13px;cursor:pointer;
  font-family:var(--print);color:var(--chalk);background:transparent;transition:transform .18s ease,background .18s ease;}
.gv-choice b{font:700 23px/1.2 var(--hand);color:inherit;} .gv-choice small{font-size:16.5px;color:var(--chalk3);}
.gv-choice:hover,.gv-choice:focus-visible{outline:none;transform:translateY(-2px) rotate(-.6deg);background:rgba(255,255,255,.05);}
.gv-choice.guide{border-color:rgba(251,227,138,.85);color:var(--yellow);background:rgba(251,227,138,.06);}
.gv-choice.guide small{color:#eadca6;}
.gv-choice.guide:hover,.gv-choice.guide:focus-visible{background:rgba(251,227,138,.12);}
.gv-ledge{position:absolute;left:-9px;right:-9px;bottom:-17px;height:11px;border-radius:2px;
  background:linear-gradient(var(--wood-hi),var(--wood) 45%,var(--wood2));box-shadow:0 4px 8px rgba(0,0,0,.4);}
.gv-ledge::after{content:"";position:absolute;right:72px;top:-5px;width:36px;height:7px;border-radius:3px;background:#f5f3ea;box-shadow:inset -3px 0 0 #dcd8c8,0 1px 2px rgba(0,0,0,.3);}
.gv-ledge::before{content:"";position:absolute;right:120px;top:-4px;width:18px;height:6px;border-radius:3px;background:#f3e3a0;box-shadow:inset -2px 0 0 #d9c77f,0 1px 2px rgba(0,0,0,.3);}
@media (max-width:480px){.gv-choices{grid-template-columns:1fr;}}

/* ---------- tour ---------- */
#gv-tour{position:fixed;inset:0;z-index:5500;pointer-events:none;}
#gv-tour[hidden]{display:none;}
#gv-svg{position:absolute;inset:0;width:100%;height:100%;overflow:visible;}
.gv-chalkline{fill:none;stroke:rgba(247,245,238,.92);stroke-width:2.8;stroke-linecap:round;stroke-linejoin:round;filter:url(#gv-chalktex);}
.gv-chalkline.sec{stroke:rgba(251,227,138,.95);}
.gv-chalkline.draw{stroke-dasharray:100;stroke-dashoffset:100;animation:gvDraw2 .6s cubic-bezier(.4,.1,.3,1) forwards;}
@keyframes gvDraw2{to{stroke-dashoffset:0;}}
#gv-tour.gv-trigger #gv-svg > rect{opacity:0;}
#gv-hint{position:fixed;z-index:5450;box-sizing:border-box;max-width:min(280px,calc(100vw - 32px));padding:9px 30px 10px 14px;animation:gvIn .3s cubic-bezier(.2,.8,.2,1);}
#gv-hint[hidden]{display:none;}
#gv-hint p{margin:0;font:17px/1.35 var(--print);color:var(--chalk);}
#gv-hint p b{color:var(--yellow);}
#gv-hint #gv-hint-x{position:absolute;top:4px;right:8px;border:0;background:none;color:var(--chalk3);font:20px/1 var(--print);cursor:pointer;padding:0;}
#gv-hint #gv-hint-x:hover{color:#fff;}
#gv-hint .gv-notch{position:absolute;top:-16px;left:var(--nx,40px);width:0;height:0;border:9px solid transparent;border-bottom-color:var(--wood-hi);}
#gv-hint.below .gv-notch{top:auto;bottom:-16px;border-bottom-color:transparent;border-top-color:var(--wood-hi);}
#gv-hint.done p{color:#bdf5cc;}
.gv-tag{font:700 22px var(--hand);fill:var(--yellow);paint-order:stroke;stroke:rgba(4,8,12,.85);stroke-width:5px;stroke-linejoin:round;}
.gv-pointer{fill:none;stroke:rgba(251,227,138,.95);stroke-width:2.6;stroke-linecap:round;stroke-linejoin:round;filter:url(#gv-chalktex);}
.gv-pointer.draw{stroke-dasharray:100;stroke-dashoffset:100;animation:gvDraw2 .5s .15s cubic-bezier(.4,.1,.3,1) forwards;}
#gv-card{position:fixed;box-sizing:border-box;width:350px;max-width:calc(100vw - 32px);pointer-events:auto;padding:14px 18px 16px;
  transition:left .38s cubic-bezier(.2,.8,.2,1),top .38s cubic-bezier(.2,.8,.2,1);}
.gv-head{display:flex;align-items:baseline;gap:10px;}
.gv-chap{font:16px var(--print);color:var(--yellow);letter-spacing:.02em;}
.gv-count{margin-left:auto;font:15px var(--print);color:var(--chalk3);white-space:nowrap;}
.gv-tally{display:inline-flex;gap:3px;margin-left:7px;}
.gv-tally i{width:2px;height:12px;background:rgba(247,245,238,.25);border-radius:1px;transform:rotate(9deg);transition:background .3s;}
.gv-tally i.on{background:var(--chalk);}
#gv-close{border:0;background:none;color:var(--chalk3);font:22px/1 var(--print);cursor:pointer;padding:0 2px;margin-left:4px;}
#gv-close:hover{color:#fff;}
.gv-body h4{margin:6px 0 1px;font:700 25px/1.15 var(--hand);color:#fff;letter-spacing:.005em;}
.gv-body .gv-titlewrap{display:inline-block;max-width:100%;}
#gv-text p{margin:7px 0 0;font:18px/1.45 var(--print);color:var(--chalk2);}
.gv-body,#gv-text p,.gv-try{overflow-wrap:anywhere;}
.gv-try{display:flex;align-items:baseline;gap:8px;margin:13px 0 2px;padding:9px 13px;font:17.5px/1.4 var(--print);color:var(--yellow);
  border-color:rgba(251,227,138,.65);background:rgba(251,227,138,.05);}
.gv-try .gv-tl{flex:0 0 auto;font-family:var(--hand);font-weight:700;}
.gv-try.ok{color:#bdf5cc;border-color:rgba(189,245,204,.75);background:rgba(189,245,204,.06);}
.gv-tick{display:inline-block;width:22px;height:16px;vertical-align:-2px;}
.gv-tick path{fill:none;stroke:#bdf5cc;stroke-width:3;stroke-linecap:round;stroke-linejoin:round;stroke-dasharray:1;stroke-dashoffset:1;animation:gvDraw .35s ease-out forwards;}
.gv-foot{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin-top:15px;}
.gv-spacer{flex:1;}
#gv-voice{white-space:nowrap;font:16px/1 var(--print);color:var(--chalk3);background:none;border:0;cursor:pointer;padding:4px 2px;}
#gv-voice:hover{color:#fff;}
#gv-voice .gv-waves{display:inline-block;width:14px;opacity:0;}
.gv-speaking #gv-voice .gv-waves{animation:gvBlink 1s ease-in-out infinite;}
@keyframes gvBlink{50%{opacity:1;}}
.gv-final{display:flex;align-items:center;gap:10px;margin-top:14px;}
.gv-final .gv-textbtn{font:16px var(--print);}
.gv-cbtn[hidden],.gv-try[hidden],.gv-final[hidden],.gv-foot[hidden]{display:none;}
@media (max-width:640px){#gv-card{width:calc(100vw - 32px);}}

/* ---------- Free exploration: where to start ---------- */
#gv-free{position:fixed;inset:0;z-index:5550;display:flex;align-items:center;justify-content:center;padding:24px;background:rgba(4,8,12,.38);}
#gv-free[hidden]{display:none;}
#gv-free .gv-board{box-sizing:border-box;width:min(520px,100%);padding:22px 28px 22px;animation:gvIn .35s cubic-bezier(.2,.8,.2,1);}
#gv-free .gv-x{position:absolute;top:8px;right:12px;border:0;background:none;color:var(--chalk3);font:24px/1 var(--print);cursor:pointer;}
#gv-free .gv-x:hover{color:#fff;}
#gv-free h3{margin:0 26px 0 0;font:700 26px/1.25 var(--hand);color:#fff;}
.gv-flow{display:grid;grid-template-columns:1fr auto 1fr auto 1fr;align-items:start;gap:0 8px;margin:16px 0 2px;text-align:center;}
.gv-flow .gv-step{display:flex;flex-direction:column;align-items:center;gap:1px;min-width:0;}
.gv-flow .gv-step b{font:700 23px/1.15 var(--hand);color:var(--yellow);}
.gv-flow .gv-step span{font:16px/1.3 var(--print);color:var(--chalk3);}
.gv-flow .gv-arr{color:var(--chalk3);font:22px/1.15 var(--hand);padding-top:1px;}
.gv-rule{height:8px;margin:14px 0 10px;}
.gv-rule path{fill:none;stroke:rgba(247,245,238,.35);stroke-width:1.6;stroke-linecap:round;stroke-dasharray:5 6;}
.gv-one-k{margin:0;font:15px var(--print);color:var(--chalk3);letter-spacing:.04em;}
.gv-one{margin:4px 0 0;font:18.5px/1.45 var(--print);color:var(--chalk);}
#gv-free .gv-final{margin-top:18px;}

/* ---------- the sim waits for Play ---------- */
.gv-attn{position:relative;animation:gvPulse 1.5s ease-out infinite !important;}
@keyframes gvPulse{0%{box-shadow:0 0 0 0 rgba(65,105,225,.75);}70%{box-shadow:0 0 0 12px rgba(65,105,225,0);}100%{box-shadow:0 0 0 0 rgba(65,105,225,0);}}
#gv-playtip{position:fixed;z-index:5560;pointer-events:none;padding:6px 12px 5px;font:17px/1.2 var(--print);color:var(--yellow);white-space:nowrap;
  background:linear-gradient(165deg,var(--board),var(--board2));border-radius:6px;box-shadow:0 0 0 2px var(--wood-hi),0 6px 16px rgba(0,0,0,.4);
  animation:gvBob 1.6s ease-in-out infinite;}
#gv-playtip::before{content:"";position:absolute;top:-7px;right:var(--ax,24px);border:7px solid transparent;border-top:0;border-bottom-color:var(--wood-hi);}
#gv-playtip[hidden]{display:none;}
@keyframes gvBob{50%{transform:translateY(3px);}}

/* ---------- Physics sheet: the one-line summary, front and centre ---------- */
.gv-oneline{margin:4px 0 22px;padding:14px 18px 15px;border-radius:10px;border:1px solid var(--accent-soft,rgba(59,155,143,.35));
  border-left:4px solid var(--accent,#3b9b8f);background:var(--ctrl-bg,rgba(30,77,58,.15));}
.gv-oneline .gv-ok{margin:0 0 4px;font:600 12px/1 var(--font-sans,inherit);letter-spacing:.12em;text-transform:uppercase;color:var(--accent,#3b9b8f);}
.gv-oneline .gv-ot{margin:0;font:500 17px/1.5 var(--font-sans,inherit);color:var(--text,#e2e8f0);}
@media (prefers-reduced-motion:reduce){.gv-write{clip-path:none;animation:none;}.gv-w{opacity:1;transform:none;animation:none;}
  .gv-underline path,.gv-tick path,.gv-chalkline.draw,.gv-pointer.draw{animation:none;stroke-dashoffset:0;stroke-dasharray:none;}
  .gv-erasing .gv-body,.gv-erasing .gv-head .gv-chap{animation:none;}#gv-card{transition:none;}.gv-attn,#gv-playtip{animation:none !important;}}