@font-face { font-family: "Inter"; font-style: normal; font-weight: 100 900; font-display: swap;
  src: url("assets/fonts/inter-latin.woff2") format("woff2");
  unicode-range: U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD; }
@font-face { font-family: "Inter"; font-style: normal; font-weight: 100 900; font-display: swap;
  src: url("assets/fonts/inter-latin-ext.woff2") format("woff2");
  unicode-range: U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF; }
@font-face { font-family: "MBW Mono"; font-style: normal; font-weight: 400; font-display: swap;
  src: url("assets/fonts/dejavu-sans-mono.woff2") format("woff2"); }
@font-face { font-family: "MBW Mono"; font-style: normal; font-weight: 600 800; font-display: swap;
  src: url("assets/fonts/dejavu-sans-mono-bold.woff2") format("woff2"); }


:root {
  color-scheme: light;
  --paper: #f7f4ee;
  --paper-2: #efebe3;
  --ink: #0d1117;
  --ink-2: #4a525e;
  --line: #ddd8cf;
  --amber: #f7931a;
  --amber-hover: #ffab3d;
  --amber-ink: #f7931a;
  --night: #0d1117;
  --night-2: #161b22;
  --night-line: rgb(247 244 238 / 14%);
  --night-text: #f7f4ee;
  --night-muted: #aab2bd;

  
  --radius-xs: 6px;
  --radius-sm: 10px;
  --radius-md: 14px;
  --radius-lg: 12px;
  --radius-round: 999px;

  --sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  --mono: "MBW Mono", ui-monospace, "SF Mono", "Cascadia Mono", "Roboto Mono", Menlo, Consolas, monospace;

  --h-display: clamp(3rem, 1.4rem + 7.2vw, 7.5rem);
  --h-2: clamp(2rem, 1.4rem + 2.6vw, 3.6rem);
  --h-3: clamp(1.15rem, 1.05rem + 0.4vw, 1.35rem);

  --header-h: 72px;
  --gl: max(16px, env(safe-area-inset-left, 0px));
  --gr: max(16px, env(safe-area-inset-right, 0px));
  --max: 1240px;
}
@media (min-width: 40rem) {
  :root { --gl: max(32px, env(safe-area-inset-left, 0px)); --gr: max(32px, env(safe-area-inset-right, 0px)); }
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; background: var(--paper); -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 400 1rem/1.55 var(--sans);
  -webkit-font-smoothing: antialiased;
}
body.menu-open { overflow: hidden; }
body::before {
  content: ""; position: fixed; inset: 0 0 auto; height: env(safe-area-inset-top, 0px);
  z-index: 60; background: transparent;
}
img { display: block; max-width: 100%; height: auto; }
h1, h2, h3, p { margin: 0; }
h1, h2 { text-wrap: balance; }
ul, ol { margin: 0; padding: 0; list-style: none; }
a { color: inherit; }
:focus-visible { outline: 3px solid var(--amber-ink); outline-offset: 3px; border-radius: var(--radius-xs); }
.band--night :focus-visible { outline-color: var(--amber); }
section[id] { scroll-margin-top: calc(var(--header-h) + 8px); }

.wrap {
  width: 100%;
  max-width: calc(var(--max) + var(--gl) + var(--gr));
  margin-inline: auto;
  padding-left: var(--gl);
  padding-right: var(--gr);
}
.label {
  font: 500 0.78rem/1.2 var(--sans);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.skip-link {
  position: absolute; left: 16px; top: -100px; z-index: 100;
  padding: 12px 18px; background: var(--ink); color: var(--paper);
  font-weight: 500; text-decoration: none; border-radius: var(--radius-sm);
}
.skip-link:focus { top: calc(env(safe-area-inset-top, 0px) + 12px); }


.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.55em;
  min-height: 48px; padding: 0 1.3rem;
  font: 500 0.95rem/1 var(--sans);
  text-decoration: none; white-space: nowrap;
  border: 2px solid transparent;
  border-radius: 8px;
  transition: background-color 150ms ease, color 150ms ease, border-color 150ms ease;
}
.btn--amber { background: var(--amber); color: var(--ink); border-color: var(--amber); }
.btn--amber:hover { background: var(--amber-hover); border-color: var(--amber-hover); }
.btn--ink { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.btn--ink:hover { background: #273241; border-color: #273241; }
.btn--line { background: transparent; color: var(--ink); border-color: var(--ink); }
.btn--line:hover { background: var(--ink); color: var(--paper); }
.btn--sm { min-height: 44px; padding: 0 1rem; font-size: 0.9rem; }
.btn svg { width: 18px; height: 18px; }


.brand { display: inline-flex; align-items: center; gap: 10px; min-height: 44px; text-decoration: none; }
.brand img { width: 34px; height: 34px; }
.brand b { font-size: 1.18rem; font-weight: 600; line-height: 1; letter-spacing: -0.035em; }
.brand__accent { color: var(--amber); }


.site-header {
  position: fixed; top: env(safe-area-inset-top, 0px); left: 0; right: 0; z-index: 50;
  height: var(--header-h);
  background: transparent;
  color: var(--ink);
  border-bottom: 1px solid transparent;
  transition: background-color 180ms ease, border-color 180ms ease, color 180ms ease, box-shadow 180ms ease;
}
.site-header.is-scrolled,
body.menu-open .site-header {
  background: rgb(247 244 238 / 94%);
  color: var(--ink);
  border-bottom-color: var(--line);
  box-shadow: 0 8px 28px rgb(13 17 23 / 7%);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
}
.site-header__inner { height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 1.5rem; }
.nav { display: none; }
.nav ul { display: flex; gap: 0.25rem; }
.nav a {
  display: inline-flex; align-items: center; min-height: 44px; padding: 0 0.8rem;
  font-size: 0.93rem; font-weight: 500; text-decoration: none; color: var(--ink-2);
  border-radius: var(--radius-sm);
}
.nav a:hover { color: var(--ink); }
.site-header.is-scrolled .nav a,
body.menu-open .site-header .nav a { color: var(--ink-2); }
.site-header.is-scrolled .nav a:hover,
body.menu-open .site-header .nav a:hover { color: var(--ink); }
.header-cta { display: none; gap: 0.5rem; }

.menu-toggle {
  width: 44px; height: 44px; margin-right: -10px; padding: 0;
  display: inline-flex; align-items: center; justify-content: center;
  background: none; border: 0; border-radius: var(--radius-sm); color: currentColor; cursor: pointer;
}
.menu-toggle i, .menu-toggle i::before, .menu-toggle i::after {
  display: block; width: 22px; height: 2px; background: currentColor; transition: transform 180ms ease;
}
.menu-toggle i { position: relative; }
.menu-toggle i::before, .menu-toggle i::after { content: ""; position: absolute; left: 0; }
.menu-toggle i::before { top: -7px; }
.menu-toggle i::after { top: 7px; }
.menu-toggle[aria-expanded="true"] i { background: transparent; }
.menu-toggle[aria-expanded="true"] i::before { transform: translateY(7px) rotate(45deg); }
.menu-toggle[aria-expanded="true"] i::after { transform: translateY(-7px) rotate(-45deg); }

.mobile-menu {
  position: fixed; top: calc(var(--header-h) + env(safe-area-inset-top, 0px)); left: 0; right: 0; bottom: 0;
  z-index: 49; overflow-y: auto; background: var(--paper); border-top: 1px solid var(--line);
  padding-block: 0.5rem calc(2rem + env(safe-area-inset-bottom, 0px));
}
.mobile-menu li { border-bottom: 1px solid var(--line); }
.mobile-menu nav a {
  display: flex; align-items: center; min-height: 64px;
  font-size: 1.7rem; font-weight: 500; letter-spacing: -0.03em; text-decoration: none;
}
.mobile-menu .btns { display: grid; gap: 0.6rem; margin-top: 1.5rem; }

@media (min-width: 60rem) {
  .nav { display: block; }
  .header-cta { display: flex; }
  .menu-toggle { display: none; }
  .mobile-menu { display: none !important; }
}


.hero { padding-top: calc(var(--header-h) + env(safe-area-inset-top, 0px) + clamp(2rem, 1rem + 4vw, 4.5rem)); padding-bottom: clamp(3.5rem, 2rem + 5vw, 6.5rem); }
.hero__grid { display: grid; gap: clamp(2.5rem, 2rem + 3vw, 4rem); align-items: end; }
.hero__copy { display: grid; gap: 1.6rem; min-width: 0; }
.hero__copy .label { color: var(--amber-ink); }
.hero h1 {
  font-size: var(--h-display);
  font-weight: 800;
  line-height: 0.92;
  letter-spacing: -0.055em;
}
.hero h1 .amber { color: var(--amber-ink); }
.hero__lede { font-size: clamp(1.1rem, 1rem + 0.4vw, 1.3rem); color: var(--ink-2); max-width: 26ch; }
.hero__actions { display: flex; flex-wrap: wrap; gap: 0.6rem; }

@media (min-width: 56rem) {
  .hero__grid { grid-template-columns: 7fr 5fr; }
}


.principles { border-top: 2px solid var(--ink); padding-block: clamp(2.5rem, 2rem + 3vw, 4.5rem) clamp(4rem, 3rem + 4vw, 6.5rem); }
.principles__head { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: baseline; gap: 1rem; margin-bottom: clamp(2rem, 1.5rem + 2vw, 3.5rem); }
.principles__head h2 { font-size: var(--h-2); font-weight: 800; letter-spacing: -0.045em; line-height: 1; }
.principles__head .label { color: var(--ink-2); }

.rules { display: grid; gap: 2rem 1.5rem; grid-template-columns: 1fr; }
.rule { display: grid; grid-template-columns: auto 1fr; gap: 0.35rem 1rem; align-content: start; min-width: 0; }
.tile {
  grid-row: span 2;
  width: 48px; height: 48px;
  display: grid; place-items: center;
  background: var(--amber);
}
.tile i {
  width: 34px; height: 34px; background: var(--ink);
  -webkit-mask: var(--src) center / contain no-repeat; mask: var(--src) center / contain no-repeat;
}
.i-wallet  { --src: url("assets/bitcoin-design-icons/wallet.svg"); }
.i-key     { --src: url("assets/bitcoin-design-icons/key.svg"); }
.i-send    { --src: url("assets/bitcoin-design-icons/send.svg"); }
.i-receive { --src: url("assets/bitcoin-design-icons/receive.svg"); }
.rule h3 { font-size: var(--h-3); font-weight: 700; letter-spacing: -0.02em; line-height: 1.2; }
.rule p { color: var(--ink-2); }

@media (min-width: 40rem) { .rules { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (min-width: 68rem) {
  .rules { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .rule { grid-template-columns: 1fr; }
  .tile { grid-row: auto; margin-bottom: 1rem; }
}


.band--night { background: var(--night); color: var(--night-text); }
.download { padding-block: clamp(4rem, 3rem + 5vw, 7rem); }
.download__head { display: grid; gap: 1rem; margin-bottom: clamp(2rem, 1.5rem + 2vw, 3rem); }
.download__title { display: flex; align-items: center; gap: 0.75rem; }
.download__title-btc { flex: none; color: var(--amber); font-size: clamp(2.2rem, 1.7rem + 1.8vw, 3rem); font-weight: 800; line-height: 0.8; }
.download__head h2 { font-size: var(--h-2); font-weight: 800; letter-spacing: -0.045em; line-height: 1; }
.download__head p { color: var(--night-muted); max-width: 40ch; }

.dl-list { border-top: 1px solid var(--night-line); }
.dl-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  align-items: center;
  padding-block: 1.5rem;
  border-bottom: 1px solid var(--night-line);
}
.dl-row.is-yours { background: linear-gradient(90deg, rgb(247 147 26 / 9%), rgb(247 147 26 / 0%) 70%); }
.dl-os { display: flex; align-items: baseline; flex-wrap: wrap; gap: 0.4rem 0.9rem; min-width: 0; }
.dl-os h3 { font-size: clamp(1.6rem, 1.2rem + 1.6vw, 2.4rem); font-weight: 800; letter-spacing: -0.04em; line-height: 1; }
.dl-yours {
  font: 500 0.7rem/1 var(--sans); letter-spacing: 0.1em; text-transform: uppercase;
  padding: 0.35rem 0.55rem; background: var(--amber); color: var(--ink); border-radius: var(--radius-xs);
}
.dl-meta { font: 400 0.85rem/1.4 var(--sans); color: var(--night-muted); }
.dl-actions { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.dl-actions .btn--line { color: var(--night-text); border-color: var(--night-line); }
.dl-actions .btn--line:hover { background: var(--night-text); color: var(--ink); border-color: var(--night-text); }

@media (min-width: 52rem) {
  .dl-row { grid-template-columns: minmax(0,4fr) minmax(0,4fr) 16rem; padding-inline: 1rem; }
  .dl-actions { justify-content: flex-end; }
}

.dl-warn { display: flex; align-items: center; gap: 0.6rem; max-width: 46ch; }
.dl-warn::before { content: ""; width: 8px; height: 8px; background: var(--amber); border-radius: var(--radius-round); flex: none; }


.site-footer { padding-top: clamp(3rem, 2.5rem + 3vw, 5rem); padding-bottom: calc(1.5rem + env(safe-area-inset-bottom, 0px)); }
.footer__top { display: grid; gap: 2.5rem; padding-bottom: 2.5rem; border-bottom: 2px solid var(--ink); }
.footer__cta { display: grid; gap: 1.2rem; align-content: start; }
.footer__cta p { font-size: clamp(1.5rem, 1.2rem + 1.2vw, 2.2rem); font-weight: 800; letter-spacing: -0.04em; line-height: 1.05; max-width: 16ch; }
.footer__cols { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 2rem 1.5rem; }
.footer__col h2 { font: 500 0.75rem/1.2 var(--sans); letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-2); margin-bottom: 0.4rem; }
.footer__col a { display: inline-flex; align-items: center; min-height: 40px; font-size: 0.95rem; text-decoration: none; }
.footer__col a:hover { text-decoration: underline; text-underline-offset: 0.25em; }
.footer__bottom {
  display: grid; grid-template-columns: 1fr; align-items: center; justify-items: center; gap: 0.5rem 2rem;
  padding-top: 1rem; font-size: 0.88rem; color: var(--ink-2);
  text-align: center;
}
.footer__bottom .legal { display: flex; flex-wrap: wrap; align-items: center; gap: 0 1.25rem; }
.footer__powered, .footer__copyright { white-space: nowrap; }
@media (min-width: 56rem) {
  .footer__bottom { grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr); }
  .footer__powered { justify-self: start; }
  .footer__copyright { justify-self: center; }
  .footer__bottom .legal { justify-self: end; }
}
.footer__bottom a { display: inline-flex; align-items: center; min-height: 44px; text-decoration: none; }
.footer__bottom a:hover { color: var(--ink); }
.status { display: inline-flex; align-items: center; gap: 0.5rem; font: 500 0.78rem/1 var(--sans); letter-spacing: 0.06em; color: var(--amber-ink); }
.status::before { content: ""; width: 8px; height: 8px; background: var(--amber); border-radius: var(--radius-round); }

@media (min-width: 48rem) { .footer__cols { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
@media (min-width: 64rem) { .footer__top { grid-template-columns: 5fr 7fr; } }


@media (prefers-reduced-motion: no-preference) {
  .hero__copy > * { animation: up 650ms cubic-bezier(.2,.7,.2,1) both; }
  .hero__copy > *:nth-child(2) { animation-delay: 60ms; }
  .hero__copy > *:nth-child(3) { animation-delay: 120ms; }
  .hero__copy > *:nth-child(4) { animation-delay: 180ms; }
  @keyframes up { from { transform: translateY(12px); opacity: 0.001; } to { transform: none; opacity: 1; } }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}


.dl-ico {
  width: 20px; height: 20px; flex: none; background: currentColor;
  -webkit-mask: url("assets/bitcoin-design-icons/receive.svg") center / contain no-repeat;
          mask: url("assets/bitcoin-design-icons/receive.svg") center / contain no-repeat;
}


.btc { font-family: var(--sans); font-weight: 800; letter-spacing: 0; margin-right: 0.35em; color: var(--amber-ink); }
.band--night .btc { color: var(--amber); }
.hero__meta {
  display: flex; flex-wrap: wrap; align-items: center; gap: 0.5rem 1rem;
  font: 400 0.82rem/1.3 var(--sans); color: var(--ink-2); letter-spacing: 0.02em;
}
.hero__meta .made { display: inline-flex; align-items: center; gap: 0.55rem; }
.hero__meta img { width: 78px; height: auto; transform: translateY(1px); }
.hero__meta .sep { width: 1px; height: 14px; background: var(--line); }


.sec-head { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: baseline; gap: 1rem; margin-bottom: clamp(2rem, 1.5rem + 2vw, 3.5rem); }
.sec-head h2 { font-size: var(--h-2); font-weight: 800; letter-spacing: -0.045em; line-height: 1; }
.sec-head .label { color: var(--ink-2); }


.tile {
  width: 54px; height: 62px;
  clip-path: polygon(50% 0, 100% 23.5%, 100% 76.5%, 50% 100%, 0 76.5%, 0 23.5%);
  clip-path: path("M22 2 C25 -0.1 29 -0.1 32 2 L49 12 C52 13.7 54 17.2 54 20.6 V41.4 C54 44.8 52 48.3 49 50 L32 60 C29 62.1 25 62.1 22 60 L5 50 C2 48.3 0 44.8 0 41.4 V20.6 C0 17.2 2 13.7 5 12 Z");
}
.tile i { width: 34px; height: 34px; }
.rule p { max-width: 34ch; }


.how { background: var(--paper-2); border-top: 0; padding-block: clamp(2.5rem, 2rem + 3vw, 4.5rem) clamp(3.5rem, 3rem + 3vw, 5.5rem); }
.moments { display: grid; grid-template-columns: 1fr;}
.moment { display: grid; gap: 0.75rem; align-content: start; padding-block: 1.75rem; min-width: 0; }
.moment h3 { font-size: clamp(2.4rem, 1.6rem + 3vw, 4.2rem); font-weight: 800; letter-spacing: -0.055em; line-height: 0.95; }
.moment h3::after { content: ""; display: block; width: 28px; height: 4px; margin-top: 1rem; background: var(--amber); border-radius: var(--radius-round); }
.moment p { color: var(--ink-2); max-width: 34ch; }
@media (min-width: 52rem) {
  .moments { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .moment { border-bottom: 0; padding: 2rem 2rem 2.25rem; }
  .moment:first-child { padding-left: 0; }
  .moment + .moment { border-left: 1px solid var(--line); }
}
.sats {
  display: flex; flex-wrap: wrap; align-items: baseline; gap: 0.4rem 0.8rem;
  justify-content: center; text-align: center;
  margin-top: 1.75rem; font: 500 0.95rem/1.4 var(--sans); font-variant-numeric: tabular-nums;
}
.sats .eq { color: var(--amber-ink); font-weight: 700; }
.sats__note { font-family: var(--sans); font-weight: 400; color: var(--ink-2); font-size: 0.9rem; }
@media (min-width: 40rem) { .sats__note { margin-left: 0.8rem; padding-left: 1rem; border-left: 1px solid var(--line); } }

.how__more {
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 1.25rem;
  margin-top: 1rem; padding: 1.5rem 0; border-bottom: 0;
  text-align: center;
}
.how__more > div { display: grid; gap: 0.35rem; }
.how__more h3 { font-size: var(--h-3); font-weight: 750; letter-spacing: -0.02em; }
.how__more p { max-width: 62ch; margin-inline: auto; color: var(--ink-2); }
.how__more .btn span { color: var(--amber); font-size: 1.15em; transition: transform 150ms ease; }
.how__more .btn:hover span { color: currentColor; transform: translateX(3px); }


.verify { padding-block: clamp(3rem, 2.5rem + 3vw, 5rem) clamp(4rem, 3rem + 4vw, 6.5rem); }
.verify__intro { font-size: clamp(1.05rem, 1rem + 0.3vw, 1.2rem); max-width: 52ch; color: var(--ink-2); margin-top: -1rem; margin-bottom: 2.5rem; }
.steps { display: grid; gap: 2.25rem 2rem; grid-template-columns: 1fr; }
.step { display: grid; gap: 0.6rem; align-content: start; padding-top: 1.25rem; border-top: 2px solid var(--ink); min-width: 0; }
.step__n { font: 500 0.85rem/1 var(--sans); color: var(--amber-ink); font-variant-numeric: tabular-nums; }
.step h3 { font-size: var(--h-3); font-weight: 700; letter-spacing: -0.02em; }
.step p { color: var(--ink-2); }
.step a { color: var(--ink); text-underline-offset: 0.25em; text-decoration-color: var(--amber-ink); }
@media (min-width: 64rem) { .steps { grid-template-columns: 1fr 2fr 1fr; } }

.cmd { margin-top: 0.6rem; background: var(--night); color: var(--night-text); min-width: 0; border-radius: var(--radius-md); overflow: hidden; }
.cmd__bar { display: flex; justify-content: space-between; align-items: stretch; border-bottom: 1px solid var(--night-line); }
.vtabs { display: flex; overflow-x: auto; }
.vtab, .cmd__copy {
  min-height: 44px; padding: 0 0.95rem; background: none; border: 0; color: var(--night-muted);
  font: 500 0.82rem/1 var(--sans); letter-spacing: 0.03em; cursor: pointer; white-space: nowrap;
}
.vtab[aria-selected="true"] { color: var(--night-text); box-shadow: inset 0 -3px 0 var(--amber); }
.vtab:hover, .cmd__copy:hover { color: var(--night-text); }
.cmd__copy { border-left: 1px solid var(--night-line); color: var(--amber); }
.vtab:focus-visible, .cmd__copy:focus-visible { outline: 3px solid var(--amber); outline-offset: -3px; }
.cmd__body { padding: 1.1rem 1rem 1.2rem; overflow-x: auto; }
.cmd__body code { font: 400 0.9rem/1.5 var(--mono); white-space: pre; }
.cmd__body code::before { content: "$ "; color: var(--amber); }


.faq { background: var(--paper-2); border-top: 2px solid var(--ink); padding-block: clamp(3rem, 2.5rem + 3vw, 5rem) clamp(4rem, 3rem + 4vw, 6.5rem); }
.faq__head { display: grid; justify-items: center; gap: 0.9rem; margin-bottom: clamp(2rem, 1.5rem + 2vw, 3.5rem); text-align: center; }
.faq__head .label { color: var(--ink-2); }
.faq__head h2 { font-size: var(--h-2); font-weight: 800; letter-spacing: -0.045em; line-height: 1; }
.faq a { color: var(--ink); text-underline-offset: 0.25em; text-decoration-color: var(--amber-ink); }
.faq__list { width: min(100%, 900px); margin-inline: auto; min-width: 0; }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary {
  display: flex; justify-content: space-between; align-items: center; gap: 1rem;
  min-height: 64px; padding-block: 0.9rem; cursor: pointer; list-style: none;
  font-size: clamp(1.02rem, 0.98rem + 0.25vw, 1.15rem); font-weight: 700; letter-spacing: -0.015em;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+"; flex: none; width: 32px; height: 32px; display: grid; place-items: center;
  font: 400 1.4rem/1 var(--sans); color: var(--amber-ink); background: rgb(247 147 26 / 10%);
  border-radius: var(--radius-sm); transition: transform 180ms ease;
}
.faq details[open] summary::after { transform: rotate(45deg); }
.faq summary:hover { color: var(--amber-ink); }
.faq details p { padding-bottom: 1.4rem; color: var(--ink-2); max-width: 62ch; }
.faq__help { margin: 2rem auto 0; color: var(--ink); font-weight: 500; text-align: center; }
.todo { background: #fff1d6; color: var(--ink); padding: 0.1em 0.3em; outline: 1px dashed var(--amber-ink); border-radius: var(--radius-xs); }


a.status { text-decoration: none; min-height: 44px; }
a.status:hover { text-decoration: underline; text-underline-offset: 0.25em; }
.footer__cta p { max-width: 14ch; }
.hero__lede { max-width: 34ch; }


:root {
  --h-display: clamp(2.4rem, 1.5rem + 3.6vw, 4.6rem);
  --h-2: clamp(1.7rem, 1.35rem + 1.4vw, 2.6rem);
}
.hero h1 { line-height: 0.98; letter-spacing: -0.045em; }
.moment h3 { font-size: clamp(1.8rem, 1.4rem + 1.5vw, 2.8rem); }
.brand b { letter-spacing: -0.02em; }


.platforms {
  display: grid; grid-template-columns: 1fr; gap: 0;
  background: transparent; border: 1px solid var(--night-line);
  border-radius: var(--radius-lg); overflow: hidden;
  -webkit-backdrop-filter: none; backdrop-filter: none;
}
.platform {
  position: relative;
  display: grid; align-content: space-between; gap: 2.5rem;
  min-height: 210px; padding: 1.75rem 1.5rem 1.5rem;
  background: transparent; min-width: 0;
  -webkit-backdrop-filter: none; backdrop-filter: none;
}
.platform + .platform { border-top: 1px solid var(--night-line); }
.platform h3 { font-size: clamp(1.9rem, 1.5rem + 1.4vw, 2.6rem); font-weight: 800; letter-spacing: -0.045em; line-height: 1; }
.platform__actions { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.platform__actions .btn--line { color: var(--night-text); border-color: var(--night-line); }
.platform__actions .btn--line:hover { background: var(--night-text); color: var(--ink); border-color: var(--night-text); }
.platform .dl-yours { position: absolute; top: 1.1rem; right: 1.1rem; }
@media (min-width: 52rem) {
  .platforms { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .platform { min-height: 250px; }
  .platform + .platform { border-top: 0; border-left: 1px solid var(--night-line); }
}


.manifesto { padding-block: clamp(3.5rem, 2.5rem + 4vw, 6rem); border-top: 2px solid var(--ink); }
.manifesto--amber { background: var(--amber); color: var(--ink); }
.manifesto--night { background: var(--night); color: var(--night-text); }
.manifesto__inner { display: grid; gap: 1.4rem; }
.manifesto__label { font: 600 0.78rem/1.2 var(--sans); letter-spacing: 0.14em; text-transform: uppercase; }
.manifesto--night .manifesto__label { color: var(--amber); }
.manifesto__text { margin: 0; }
.manifesto__text p {
  font-size: clamp(1.8rem, 1.2rem + 2.4vw, 3.3rem); font-weight: 800; letter-spacing: -0.045em; line-height: 1.04;
  max-width: 22ch; text-wrap: balance;
}
.manifesto--amber .soft { color: rgb(13 17 23 / 82%); }
.manifesto--night .soft { color: var(--night-muted); }
.manifesto--night .sats {
  grid-column: 1 / -1;
  width: 100%; margin-top: 0; padding-top: 0;
  color: var(--night-text); border-top: 0;
}
.manifesto--night .sats__note { color: var(--night-muted); border-left-color: var(--night-line); }
.manifesto--amber :focus-visible { outline-color: var(--ink); }


.site-footer.band--night { background: var(--night); color: var(--night-muted); padding-top: clamp(3.5rem, 3rem + 3vw, 5.5rem); }
.footer__hero {
  display: flex; flex-wrap: wrap; justify-content: space-between; align-items: flex-end; gap: 1.75rem 2rem;
  padding-bottom: clamp(2.5rem, 2rem + 2vw, 3.5rem); border-bottom: 1px solid var(--night-line);
}
.footer__brand { display: grid; gap: 0.6rem; }
.brand--lg { color: var(--night-text); }
.brand--lg img { width: 44px; height: 44px; }
.brand--lg b { font-size: clamp(1.6rem, 1.2rem + 1.6vw, 2.4rem); letter-spacing: -0.04em; }
.footer__brand p { font-size: 1.05rem; }
.btn--lg { min-height: 56px; padding: 0 1.75rem; font-size: 1rem; }
.footer__grid {
  display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 2rem 1.5rem;
  padding-block: 2.5rem;
}
@media (min-width: 48rem) { .footer__grid { grid-template-columns: repeat(4, minmax(0, 1fr)); } }
.band--night .footer__col h2 { color: var(--amber); }
.band--night .footer__col a { color: var(--night-text); }
.footer__note {
  display: flex; align-items: center; gap: 0.6rem;
  padding-block: 1.1rem; border-top: 1px solid var(--night-line); font-size: 0.9rem;
}
.footer__note .dot { width: 8px; height: 8px; background: var(--amber); border-radius: var(--radius-round); flex: none; }
.band--night .footer__bottom { color: var(--night-muted); border-top: 1px solid var(--night-line); padding-top: 0.5rem; }
.band--night .footer__bottom a { color: var(--night-muted); }
.band--night .footer__bottom a:hover { color: var(--night-text); }
.footer__bottom .legal { display: flex; flex-wrap: wrap; gap: 0 1.25rem; }



.platform__top { display: grid; gap: 1.1rem; }
.os-ico { width: 40px; height: 40px; fill: none; stroke: var(--amber); stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }


.manifesto__inner { grid-template-columns: 1fr; align-items: center; gap: 2.5rem; }
.manifesto__copy { display: grid; gap: 1.4rem; min-width: 0; }
.manifesto__art { display: flex; justify-content: flex-start; min-width: 0; }
.manifesto__art--wordmark img { width: clamp(180px, 24vw, 330px); height: auto; }
.manifesto__art--symbol img { width: clamp(120px, 18vw, 240px); height: auto; }
@media (min-width: 56rem) {
  .manifesto__inner { grid-template-columns: minmax(0, 7fr) minmax(0, 4fr); gap: 3rem; }
  .manifesto__art { justify-content: flex-end; }
}


.paper {
  display: inline-grid; gap: 0.3rem; justify-self: start;
  min-width: min(100%, 330px); min-height: 96px;
  margin-top: 0.4rem; padding: 1.2rem 1.55rem 1.25rem;
  border: 1px solid var(--night-line); border-radius: var(--radius-md); text-decoration: none; color: var(--night-text);
  transition: border-color 150ms ease, background-color 150ms ease;
}
.paper:hover { border-color: var(--amber); background: var(--night-2); }
.paper__title { font-weight: 700; font-size: 1.12rem; }
.paper__title span { color: var(--amber); }
.paper__meta { font: 400 0.8rem/1.3 var(--sans); color: var(--night-muted); letter-spacing: 0.02em; }
.manifesto--night :focus-visible { outline-color: var(--amber); }

img.os-ico { width: 44px; height: 44px; object-fit: contain; }
.manifesto__art--paper .paper { margin-top: 0; }


.news { padding-block: clamp(3rem, 2.5rem + 3vw, 5rem) clamp(4rem, 3rem + 4vw, 6.5rem); }
.news__all {
  display: inline-flex; align-items: center; gap: 0.4em; min-height: 44px;
  font-weight: 600; font-size: 0.95rem; text-decoration: underline; text-underline-offset: 0.3em;
  text-decoration-color: var(--amber-ink);
}
.news__all span { transition: transform 150ms ease; }
.news__all:hover span { transform: translateX(3px); }

.news__grid { display: grid; gap: 2rem; }
@media (min-width: 60rem) { .news__grid { grid-template-columns: minmax(0, 6fr) minmax(0, 6fr); gap: 3rem; } }

.tag {
  display: inline-flex; align-items: center;
  padding: 0.3rem 0.55rem; border: 1px solid var(--ink); border-radius: var(--radius-xs);
  font: 500 0.7rem/1 var(--sans); letter-spacing: 0.1em; text-transform: uppercase;
}
.tag--amber { background: var(--amber); border-color: var(--amber); color: var(--ink); }


.feature {
  display: grid; grid-template-rows: auto 1fr; gap: 3rem; height: 100%;
  min-height: 360px; padding: clamp(1.5rem, 1.2rem + 1.4vw, 2.4rem);
  background: var(--night); color: var(--night-text); text-decoration: none;
  border-radius: var(--radius-lg); overflow: hidden; box-shadow: inset 0 4px 0 var(--amber);
}
.feature__top { display: flex; justify-content: space-between; align-items: flex-start; }
.feature__mark { width: 40px; height: 40px; }
.feature__body { display: grid; gap: 1rem; align-content: end; }
.feature h3 { font-size: clamp(1.6rem, 1.25rem + 1.4vw, 2.4rem); font-weight: 800; letter-spacing: -0.04em; line-height: 1.04; max-width: 18ch; }
.feature p { color: var(--night-muted); max-width: 46ch; }
.feature__cta { display: inline-flex; align-items: center; gap: 0.5em; margin-top: 0.5rem; font-weight: 500; color: var(--amber); }
.arr { display: inline-block; transition: transform 160ms ease; }
.feature:hover .arr, .story a:hover .arr { transform: translateX(4px); }
.feature:focus-visible { outline: 3px solid var(--amber-ink); outline-offset: 3px; }


.news__list { border-top: 2px solid var(--ink); }
.story { border-bottom: 1px solid var(--line); }
.story a {
  display: grid; grid-template-columns: minmax(0, 1fr) auto; column-gap: 1.5rem; row-gap: 0.5rem;
  padding-block: 1.5rem; text-decoration: none;
}
.story__meta { grid-column: 1; display: flex; align-items: center; gap: 0.75rem; font: 400 0.8rem/1 var(--sans); color: var(--ink-2); }
.story__title { grid-column: 1; font-size: clamp(1.1rem, 1rem + 0.45vw, 1.35rem); font-weight: 750; letter-spacing: -0.025em; line-height: 1.2; transition: color 150ms ease; }
.story__text { grid-column: 1; color: var(--ink-2); max-width: 52ch; }
.story .arr { grid-column: 2; grid-row: 1 / span 3; align-self: center; font-size: 1.3rem; color: var(--amber-ink); }
.story a:hover .story__title { color: var(--amber-ink); }


body { font-optical-sizing: auto; }
.label, .tag, .dl-yours, .step__n, .story__meta, .paper__meta, .footer__col h2 { font-weight: 400; }
.vtab, .cmd__copy { font-weight: 500; }
.hero { padding-top: calc(var(--header-h) + env(safe-area-inset-top, 0px) + clamp(1rem, 0.5rem + 1.6vw, 2.25rem)); }
@media (min-width: 56rem) {
  .hero__grid { align-items: center; }
}

.hero {
  display: flex; align-items: center;
  min-height: clamp(540px, 72svh, 680px);
  padding-top: calc(var(--header-h) + env(safe-area-inset-top, 0px) + clamp(2.4rem, 1.35rem + 3vw, 4.4rem));
  padding-bottom: clamp(4.5rem, 3rem + 5.5vw, 7.5rem);
  color: var(--night-text);
  background:
    linear-gradient(rgb(13 17 23 / 30%), rgb(13 17 23 / 46%)),
    url("assets/hero/bitcoin-mountain-sunset.webp") center 52% / cover no-repeat,
    var(--night);
}
.hero__grid { grid-template-columns: minmax(0, 1fr); place-items: center; text-align: center; }
.hero__copy { width: 100%; max-width: 74rem; justify-items: center; }
.hero h1 { max-width: none; font-size: clamp(2.45rem, 4vw, 4rem); }
.hero__lede { margin-inline: auto; }
.hero__actions, .hero__meta { justify-content: center; }
.hero h1 { color: var(--night-text); text-shadow: 0 2px 22px rgb(13 17 23 / 32%); }
.hero h1 .amber, .hero__copy .label { color: var(--amber-ink); }
.hero__copy .label { font-size: 0.95rem; font-weight: 600; }
.hero__copy .label .btc { font-size: 1.45em; margin-right: 0.42em; }
.hero__lede, .hero__meta { color: var(--night-text); }
.hero__meta .made {
  padding: 0.45rem 0.65rem;
  background: rgb(13 17 23 / 28%);
  border: 1px solid rgb(247 244 238 / 14%);
  border-radius: var(--radius-sm);
  color: rgb(247 244 238 / 88%);
  text-shadow: 0 1px 12px rgb(13 17 23 / 72%);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
}
.hero-wordmark {
  position: relative;
  display: inline-block;
  width: 78px;
  aspect-ratio: 306.5 / 64;
  transform: translateY(1px);
}
.hero-wordmark img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  transform: none;
}
.hero-wordmark__light { filter: brightness(0) invert(1); }
.hero-wordmark__coin { clip-path: inset(0 79% 0 0); }
.hero .btn--ink { background: var(--amber); color: var(--ink); border-color: var(--amber); }
.hero .btn--ink:hover { background: var(--amber-hover); border-color: var(--amber-hover); }
.hero .btn--line { color: var(--night-text); border-color: var(--night-text); }
.hero .btn--line:hover { background: var(--night-text); color: var(--ink); border-color: var(--night-text); }
.hero :focus-visible { outline-color: var(--amber-ink); }
.hero__actions .btn { min-height: 54px; padding-inline: 1.55rem; font-size: 1rem; }
@media (min-width: 48rem) { .hero h1 { white-space: nowrap; } }
@media (max-width: 55.99rem) {
  .hero {
    background:
      linear-gradient(rgb(13 17 23 / 34%), rgb(13 17 23 / 50%)),
      url("assets/hero/bitcoin-mountain-sunset.webp") 62% 50% / cover no-repeat,
      var(--night);
  }
}

body:not(.menu-open) .site-header:not(.is-scrolled):not(.subpage-header) { color: var(--night-text); }
body:not(.menu-open) .site-header:not(.is-scrolled):not(.subpage-header) .nav a { color: rgb(247 244 238 / 82%); }
body:not(.menu-open) .site-header:not(.is-scrolled):not(.subpage-header) .nav a:hover { color: var(--night-text); }

.manifesto--amber {
  border-top: 0;
  background:
    linear-gradient(to right, rgb(247 147 26 / 22%), rgb(247 147 26 / 30%) 55%, rgb(247 147 26 / 52%)),
    url("assets/backgrounds/manifesto-contour-lines.webp") center / cover no-repeat,
    var(--amber);
}
.manifesto--amber .manifesto__label {
  display: flex; align-items: center; gap: 0.65rem;
  justify-self: start; text-align: left;
  font-size: clamp(0.9rem, 0.84rem + 0.22vw, 1.02rem);
}
.manifesto--amber .manifesto__label > span { font-size: 1.68em; }
@media (min-width: 56rem) {
  .manifesto--amber .manifesto__inner {
    grid-template-columns: minmax(150px, 3fr) minmax(0, 7fr);
    gap: clamp(2rem, 3.8vw, 3.8rem);
  }
  .manifesto--amber .manifesto__label { justify-self: end; }
}

.how {
  color: var(--ink);
  border-top: 0;
  background: var(--paper-2);
}

.download {
  position: relative;
  isolation: isolate;
  background: var(--night);
}
.download::before {
  content: "";
  position: absolute; inset: 0; z-index: 0;
  transform: scaleX(-1);
  background:
    linear-gradient(rgb(13 17 23 / 82%), rgb(13 17 23 / 92%)),
    url("assets/backgrounds/night-canyon.webp") center / cover no-repeat,
    var(--night);
}
.download > .wrap { position: relative; z-index: 1; }

.feature {
  background:
    linear-gradient(rgb(13 17 23 / 48%), rgb(13 17 23 / 84%)),
    url("assets/backgrounds/news-release-topography.webp") center / cover no-repeat;
}

.faq {
  position: relative;
  isolation: isolate;
  padding-bottom: clamp(9rem, 7rem + 8vw, 14rem);
  background:
    linear-gradient(to bottom, var(--paper) 0%, var(--paper) 38%, rgb(247 244 238 / 96%) 55%, rgb(247 244 238 / 72%) 74%, rgb(247 244 238 / 0%) 100%),
    url("assets/backgrounds/faq-stipple-mountains.webp") center bottom / 100% auto no-repeat,
    var(--paper);
}
.faq > .wrap { position: relative; z-index: 1; }


.manifesto--night {
  padding-bottom: clamp(2.25rem, 1.75rem + 2vw, 3.5rem);
  background:
    radial-gradient(circle at 88% 50%, rgb(247 147 26 / 10%), transparent 28rem),
    repeating-linear-gradient(0deg, transparent 0 7px, rgb(247 244 238 / 2.5%) 7px 8px),
    var(--night);
}
.manifesto--night .manifesto__inner { row-gap: clamp(1.25rem, 2.5vw, 2rem); }
.manifesto__label > span { font-size: 1.28em; font-weight: 800; line-height: 0; }


.site-footer.band--night {
  background:
    repeating-radial-gradient(circle at 88% 15%, transparent 0 28px, rgb(247 244 238 / 0.8%) 29px 30px),
    linear-gradient(rgb(13 17 23 / 82%), rgb(13 17 23 / 92%)),
    url("assets/backgrounds/night-canyon.webp") center / cover no-repeat,
    var(--night);
}
.footer__grid { justify-content: center; }
.footer__col { text-align: center; }
.footer__col ul { display: grid; justify-items: center; }


.subpage-header { background: rgb(247 244 238 / 96%); border-bottom-color: var(--line); }
.subpage-main { padding-top: calc(var(--header-h) + env(safe-area-inset-top, 0px)); }
.compat-hero {
  padding-block: clamp(4rem, 3rem + 5vw, 7rem);
  background:
    radial-gradient(circle at 84% 35%, rgb(247 147 26 / 16%), transparent 24rem),
    var(--paper);
  border-bottom: 2px solid var(--ink);
}
.compat-hero__inner { display: grid; gap: 1.5rem; }
.compat-hero h1 {
  max-width: 12ch; font-size: clamp(2.8rem, 1.8rem + 4.6vw, 6.2rem);
  font-weight: 800; line-height: 0.95; letter-spacing: -0.055em;
}
.compat-hero h1 span { color: var(--amber); }
.compat-hero__lede { max-width: 54ch; color: var(--ink-2); font-size: clamp(1.08rem, 1rem + 0.45vw, 1.3rem); }
.compat-index { padding-block: 1.25rem; border-bottom: 1px solid var(--line); }
.compat-index ul { display: flex; flex-wrap: wrap; gap: 0.4rem 1.5rem; }
.compat-index a {
  display: inline-flex; align-items: center; min-height: 40px; color: var(--ink-2);
  font-size: 0.92rem; font-weight: 500; text-decoration-color: var(--amber); text-underline-offset: 0.3em;
}
.compat-index a:hover { color: var(--amber); }
.compat-content { padding-block: clamp(3rem, 2.5rem + 3vw, 5.5rem); }
.compat-list { display: grid; }
.compat-item {
  display: grid; gap: 1.5rem; padding-block: clamp(2rem, 1.6rem + 2vw, 3.5rem);
  border-top: 1px solid var(--line); scroll-margin-top: calc(var(--header-h) + 12px);
}
.compat-item:first-child { padding-top: 0; border-top: 0; }
.compat-item__title { display: grid; gap: 0.55rem; align-content: start; }
.compat-item__n { font: 500 0.78rem/1 var(--sans); color: var(--amber); }
.compat-item h2 { font-size: var(--h-2); font-weight: 800; line-height: 1; letter-spacing: -0.045em; }
.compat-item__body { display: grid; gap: 1.25rem; }
.compat-item__intro { max-width: 62ch; color: var(--ink-2); }
.compat-chips { display: flex; flex-wrap: wrap; gap: 0.55rem; }
.compat-chip {
  display: inline-grid; gap: 0.2rem; min-width: 9rem; padding: 0.9rem 1rem;
  border: 1px solid var(--line); border-radius: var(--radius-md); background: var(--paper-2);
}
.compat-chip strong { font-size: 0.95rem; }
.compat-chip small { color: var(--ink-2); font-size: 0.78rem; }
.compat-chip code { font: 600 0.9rem/1.2 var(--mono); color: var(--amber); }
.compat-note {
  margin-top: 1.5rem; padding: 1.25rem 1.4rem; border-left: 4px solid var(--amber);
  border-radius: var(--radius-sm); background: var(--paper-2); color: var(--ink-2);
}
.compat-note strong { color: var(--ink); }
.compat-cta { padding-block: clamp(3rem, 2.5rem + 3vw, 5rem); }
.compat-cta__inner { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 1.5rem 2rem; }
.compat-cta h2 { color: var(--night-text); font-size: var(--h-2); line-height: 1; letter-spacing: -0.045em; }
.compat-cta p { margin-top: 0.65rem; max-width: 48ch; color: var(--night-muted); }
@media (min-width: 52rem) {
  .compat-item { grid-template-columns: minmax(0, 4fr) minmax(0, 8fr); gap: 3rem; }
}

.document-content { padding: 2rem 0 5rem; }
.document-content .wrap { max-width: 52rem; }
.document-content h2 { margin: 2rem 0 0.75rem; font-size: 1.5rem; }
.document-content p { margin-bottom: 1rem; line-height: 1.75; }
.document-content code { overflow-wrap: anywhere; }