html[data-theme="bitcoin"],
html[data-theme="bitcoin"]::backdrop {
  color-scheme: dark;
  --bg: #0c0f14;
  --bg-deep: #05070a;
  --accent-bg: #141017;
  --panel-bg: rgba(18, 22, 29, 0.9);
  --panel-bg-strong: rgba(29, 25, 24, 0.95);
  --text: #f4e7cf;
  --text-light: #c9a875;
  --text-muted: #8b7558;
  --border: #7f5a24;
  --border-soft: rgba(247, 147, 26, 0.28);
  --accent: #f7931a;
  --accent-hover: #ffbf5f;
  --accent-text: #120900;
  --code: #ffd28a;
  --preformatted: #d8b06f;
  --marked: #f7931a;
  --disabled: #352717;
  --selection-text: #fff2db;
  --selection-bg: rgba(247, 147, 26, 0.32);
  --measure: 78rem;
  --page-gutter: clamp(0.75rem, 4vw, 4rem);
  --body-bg-start: #121922;
  --body-bg-mid: #0c0f14;
  --body-bg-end: #05070a;
  --body-ambient-top: rgba(247, 147, 26, 0.11);
  --body-ambient-bottom: rgba(55, 132, 122, 0.08);
  --body-grain-line: rgba(247, 147, 26, 0.014);
  --scanline-dark: rgba(0, 0, 0, 0.2);
  --scanline-bright: rgba(247, 147, 26, 0.026);
  --scanline-sweep-a: rgba(247, 147, 26, 0.016);
  --scanline-sweep-b: rgba(55, 132, 122, 0.008);
  --scanline-sweep-c: rgba(0, 0, 0, 0.1);
  --header-veil-top: rgba(247, 147, 26, 0.1);
  --header-veil-bottom: rgba(55, 132, 122, 0.025);
  --header-shadow: rgba(247, 147, 26, 0.09);
  --header-divider-soft: rgba(247, 147, 26, 0.22);
  --header-divider-core: rgba(55, 132, 122, 0.2);
  --main-vignette: rgba(247, 147, 26, 0.08);
  --footer-divider: rgba(247, 147, 26, 0.5);
  --heading-color: #ffd08a;
  --link-decoration: rgba(247, 147, 26, 0.68);
  --link-hover-shadow: 0 0 0.85rem rgba(247, 147, 26, 0.34);
  --link-focus-inner: 0 0 0 2px rgba(55, 132, 122, 0.32);
  --link-focus-outer: 0 0 0.95rem rgba(247, 147, 26, 0.48);
  --button-top: #ffbd59;
  --button-bottom: #f7931a;
  --button-hover-shadow: 0 0 1.15rem rgba(247, 147, 26, 0.42);
  --button-focus-shadow: 0 0 0.95rem rgba(55, 132, 122, 0.45);
  --select-overlay-top: rgba(247, 147, 26, 0.08);
  --select-overlay-bottom: rgba(55, 132, 122, 0.018);
  --select-surface: rgba(12, 15, 20, 0.68);
  --select-border: rgba(247, 147, 26, 0.64);
  --select-focus: 0 0 0 2px rgba(55, 132, 122, 0.22),
    0 0 0.7rem rgba(247, 147, 26, 0.4);
  --link-glow: 0 0 0.16rem rgba(255, 180, 80, 0.54),
    0 0 0.38rem rgba(247, 147, 26, 0.34),
    0 0 0.62rem rgba(55, 132, 122, 0.2);
  --link-glow-strong: 0 0 0.22rem rgba(255, 205, 115, 0.82),
    0 0 0.56rem rgba(247, 147, 26, 0.58),
    0 0 1.05rem rgba(55, 132, 122, 0.28);
  --crt-glow: 0 0 0.16rem rgba(247, 147, 26, 0.22),
    0 0 0.75rem rgba(55, 132, 122, 0.09);
  --crt-glow-strong: 0 0 0.22rem rgba(255, 190, 98, 0.62),
    0 0 1.05rem rgba(247, 147, 26, 0.28);
  --crt-panel-shadow: inset 0 0 0 1px rgba(247, 147, 26, 0.12),
    0 0 1.1rem rgba(55, 132, 122, 0.08);
  --grain-strength: 0.066;
  --grain-size: 112px;
  --grain-animation-speed: 2.8s;
  --grain-contrast: 310%;
  --snow-layers: none;
  --snow-size: auto;
  --snow-position: 0 0;
  --snow-position-end: 0 0;
  --snow-opacity: 0;
  --snow-animation: none;

  --btc-profit: #63d39a;
  --btc-cyan: #3a9e92;
  --btc-warning: #ffbf5f;
  --btc-danger: #d86b5f;
}