:root {
  color-scheme: dark;
  --night: #071525;
  --night-2: #0b2037;
  --night-3: #102b47;
  --panel: #10243a;
  --line: rgba(170, 197, 222, 0.18);
  --ink: #f2f7fc;
  --muted: #afc0d1;
  --quiet: #7f98af;
  --btc: #f2a900;
  --cyan: #56c5e8;
  --green: #54c995;
  --container: min(1160px, calc(100% - 48px));
  font-family: Inter, "Segoe UI", Arial, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--night);
  font-family: Inter, "Segoe UI", Arial, sans-serif;
}
a { color: inherit; text-decoration: none; }
button { font: inherit; }
.page-shell { min-height: 100vh; overflow: hidden; }

.site-header {
  width: var(--container);
  height: 84px;
  margin: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(190, 212, 232, 0.12);
}
.brand { display: inline-flex; align-items: center; gap: 11px; font-size: 14px; font-weight: 850; letter-spacing: .08em; }
.brand-mark { display: grid; width: 38px; height: 38px; place-items: center; border-radius: 50%; background: var(--btc); color: #172536; font-size: 25px; font-weight: 900; }
.brand small { display: block; margin-top: 3px; color: var(--quiet); font-size: 8px; letter-spacing: .2em; }
.header-status { display: inline-flex; align-items: center; gap: 9px; color: #aabdd0; font-size: 10px; font-weight: 750; letter-spacing: .15em; }
.header-status i, .hero-assurance i { width: 7px; height: 7px; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 4px rgba(84, 201, 149, .11); }

.hero {
  position: relative;
  width: var(--container);
  min-height: 610px;
  margin: auto;
  padding: 78px 0 76px;
  display: grid;
  grid-template-columns: minmax(0, .9fr) minmax(400px, 1.1fr);
  align-items: center;
  gap: 44px;
  isolation: isolate;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0 -20vw;
  z-index: -2;
  background:
    radial-gradient(ellipse at 76% 42%, rgba(40, 123, 191, .22), transparent 35%),
    radial-gradient(circle at 14% 38%, rgba(25, 81, 130, .2), transparent 28%),
    linear-gradient(rgba(144, 184, 217, .035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(144, 184, 217, .035) 1px, transparent 1px),
    linear-gradient(135deg, var(--night), var(--night-2));
  background-size: auto, auto, 38px 38px, 38px 38px, auto;
}
.hero-copy { position: relative; z-index: 2; max-width: 580px; }
.eyebrow { margin: 0 0 20px; color: var(--btc); font-size: 10px; font-weight: 850; letter-spacing: .19em; }
.eyebrow-dot { display: inline-block; width: 7px; height: 7px; margin-right: 8px; border-radius: 50%; background: var(--btc); vertical-align: 1px; }
h1 { margin: 0; font-size: clamp(46px, 6.4vw, 78px); line-height: .99; letter-spacing: -.055em; font-weight: 780; }
h1 span { color: var(--btc); }
.hero-description { max-width: 480px; margin: 23px 0 0; color: var(--muted); font-size: 16px; line-height: 1.75; }
.hero-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.button-primary, .button-secondary { min-height: 48px; padding: 0 18px; display: inline-flex; align-items: center; justify-content: center; gap: 15px; border-radius: 7px; font-size: 13px; font-weight: 800; transition: transform 160ms ease, background 160ms ease, border-color 160ms ease; }
.button-primary { min-height: 64px; padding: 0 30px; border: 1px solid var(--btc); background: var(--btc); color: #172536; cursor: pointer; font-size: 16px; }
.button-primary span { font-size: 18px; }
.button-primary:hover { background: #ffc247; transform: translateY(-2px); }
.button-secondary { border: 1px solid rgba(187, 209, 230, .3); color: var(--ink); background: rgba(255, 255, 255, .025); }
.button-secondary:hover { border-color: rgba(86, 197, 232, .65); background: rgba(86, 197, 232, .06); }
.claim-note { max-width: 460px; margin: 12px 0 0; color: var(--quiet); font-size: 11px; line-height: 1.55; }
.hero-assurance { display: flex; flex-wrap: wrap; gap: 20px; margin-top: 25px; color: #b7c8d8; font-size: 11px; }
.hero-assurance span { display: inline-flex; align-items: center; gap: 8px; }
.hero-assurance i { width: 6px; height: 6px; }

.visual-column { position: relative; min-height: 400px; display: grid; place-items: center; isolation: isolate; }
.visual-column::before { content: ""; position: absolute; width: min(390px, 78%); aspect-ratio: 1; border: 1px solid rgba(100, 165, 213, .12); border-radius: 50%; box-shadow: 0 0 0 38px rgba(69, 127, 173, .025), 0 0 0 78px rgba(69, 127, 173, .018); }
.visual-column::after { content: ""; position: absolute; inset: 7% 3%; z-index: -1; background-image: radial-gradient(rgba(135, 180, 214, .23) 1px, transparent 1.5px); background-size: 24px 24px; opacity: .28; mask-image: radial-gradient(ellipse, black 15%, transparent 72%); }
.btc-emblem { position: relative; z-index: 2; width: 178px; height: 178px; display: grid; place-items: center; border: 1px solid rgba(242, 169, 0, .52); border-radius: 50%; background: radial-gradient(circle at 32% 26%, #fbc851, #e39700 72%); box-shadow: 0 0 70px rgba(242, 169, 0, .12), inset 0 1px 10px rgba(255,255,255,.22); animation: emblem-breathe 8s ease-in-out infinite; }
.btc-emblem::before, .btc-emblem::after { content: ""; position: absolute; inset: -18px; border: 1px solid rgba(86, 197, 232, .2); border-radius: 50%; }
.btc-emblem::after { inset: -41px; border-color: rgba(86, 197, 232, .09); }
.btc-emblem span { color: #172536; font-size: 111px; line-height: 1; font-weight: 850; transform: translateY(-4px); }
.orbit { position: absolute; z-index: 1; width: 310px; height: 112px; border: 1px solid rgba(86, 197, 232, .2); border-radius: 50%; transform: rotate(-32deg); }
.orbit-two { width: 370px; height: 150px; border-color: rgba(153, 192, 221, .11); transform: rotate(32deg); }
.network-line { position: absolute; z-index: 0; height: 1px; background: linear-gradient(90deg, transparent, rgba(86, 197, 232, .45), transparent); transform-origin: center; }
.line-one { width: 84%; top: 32%; transform: rotate(-18deg); }
.line-two { width: 76%; top: 70%; transform: rotate(15deg); }
.line-three { width: 54%; top: 51%; transform: rotate(90deg); opacity: .4; }
.network-node { position: absolute; z-index: 2; width: 8px; height: 8px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 0 5px rgba(86, 197, 232, .1); animation: node-pulse 4s ease-in-out infinite; }
.node-one { top: 23%; left: 19%; }.node-two { top: 29%; right: 17%; animation-delay: 1s; }.node-three { right: 12%; bottom: 27%; animation-delay: 2s; }.node-four { bottom: 17%; left: 25%; animation-delay: 3s; }
.visual-caption { position: absolute; right: 1%; bottom: 4%; width: 230px; padding: 15px 17px; border: 1px solid var(--line); border-radius: 8px; background: rgba(9, 29, 49, .78); backdrop-filter: blur(10px); }
.caption-kicker { display: block; margin-bottom: 7px; color: var(--cyan); font-size: 8px; letter-spacing: .16em; font-weight: 800; }
.visual-caption strong { font-size: 11px; font-weight: 700; color: #dce9f5; }
.caption-rule { display: block; height: 1px; margin-top: 12px; background: linear-gradient(90deg, var(--btc), rgba(242,169,0,0)); }
.visual-index { position: absolute; top: 6%; right: 5%; color: var(--quiet); font-size: 10px; letter-spacing: .12em; }.visual-index b { padding: 0 5px; color: var(--btc); }

.steps-heading h2 { margin: 0; font-size: clamp(32px, 4vw, 46px); line-height: 1.08; letter-spacing: -.045em; }
.steps-heading > p:last-child { max-width: 550px; color: var(--muted); font-size: 14px; line-height: 1.7; }

.steps-section { width: var(--container); margin: auto; padding: 82px 0; }
.steps-heading { margin-bottom: 28px; }
.steps-heading h2 { color: var(--ink); }
.steps-heading > p:last-child { color: var(--muted); }
.expect-card { max-width: 760px; padding: 27px 30px; border: 1px solid var(--line); border-radius: 10px; background: linear-gradient(145deg, rgba(255,255,255,.065), rgba(255,255,255,.018)); }
.expect-list { display: grid; gap: 13px; margin: 0; padding: 0; list-style: none; color: #d6e2ef; font-size: 14px; }
.expect-list li { position: relative; padding-left: 18px; line-height: 1.55; }
.expect-list li::before { content: ""; position: absolute; top: .58em; left: 0; width: 6px; height: 6px; border-radius: 50%; background: var(--btc); }
.expect-caption { margin: 20px 0 0; padding-top: 14px; border-top: 1px solid var(--line); color: var(--quiet); font-size: 11px; line-height: 1.6; }

.notice-section { width: var(--container); margin: 0 auto 76px; display: flex; gap: 14px; align-items: flex-start; padding: 19px 21px; border: 1px solid rgba(86, 197, 232, .16); border-radius: 8px; background: rgba(86, 197, 232, .045); }
.notice-mark { flex: 0 0 22px; width: 22px; height: 22px; display: grid; place-items: center; border: 1px solid rgba(86, 197, 232, .45); border-radius: 50%; color: var(--cyan); font-size: 12px; font-weight: 800; }
.notice-section strong { font-size: 12px; }.notice-section p { margin: 5px 0 0; color: var(--muted); font-size: 11px; line-height: 1.65; }
.notice-official { border-color: rgba(242, 169, 0, .46); background: rgba(242, 169, 0, .055); }
.notice-official .notice-mark { width: 8px; height: 8px; flex-basis: 8px; margin: 7px; border: 0; background: var(--btc); }
.notice-official strong { color: #f2b63e; }
.notice-official p { color: #d5c3a0; }
.site-footer { display: grid; grid-template-columns: auto 1fr; align-items: center; gap: 24px; padding: 27px max(24px, calc((100vw - 1160px) / 2)); border-top: 1px solid rgba(190, 212, 232, .1); background: #06111e; }
.footer-brand .brand-mark { width: 32px; height: 32px; font-size: 21px; }.footer-brand { font-size: 12px; }
.site-footer > p { margin: 0; color: var(--quiet); font-size: 10px; line-height: 1.5; }
.footer-copy { color: #71879c; font-size: 9px; text-align: right; }

@keyframes node-pulse { 0%, 100% { opacity: .65; transform: scale(.85); } 50% { opacity: 1; transform: scale(1.1); } }
@keyframes emblem-breathe { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-5px); } }

@media (max-width: 800px) {
  .hero { grid-template-columns: 1fr; gap: 18px; padding-top: 68px; }
  .hero-copy { max-width: 660px; }
  .visual-column { min-height: 370px; }
}
@media (max-width: 560px) {
  :root { --container: min(100% - 34px, 1160px); }
  .site-header { height: 68px; }
  .header-status { font-size: 8px; letter-spacing: .08em; }
  .brand { font-size: 12px; }.brand-mark { width: 33px; height: 33px; font-size: 22px; }
  .hero { min-height: auto; padding: 58px 0 42px; }
  h1 { font-size: clamp(42px, 13vw, 62px); }
  .hero-description { font-size: 14px; }
  .hero-actions { align-items: stretch; flex-direction: column; }
  .button-primary, .button-secondary { width: 100%; }
  .button-primary { min-height: 64px; }
  .hero-assurance { gap: 12px; font-size: 10px; }
  .visual-column { min-height: 310px; }
  .btc-emblem { width: 138px; height: 138px; }.btc-emblem span { font-size: 88px; }
  .orbit { width: 250px; height: 92px; }.orbit-two { width: 300px; height: 122px; }
  .visual-caption { right: 0; bottom: 0; width: 205px; }
  .steps-section { padding: 60px 0; }
  .expect-card { padding: 21px; }
  .notice-section { margin-bottom: 52px; }
  .site-footer { grid-template-columns: 1fr; gap: 13px; padding: 24px 17px; }
  .footer-copy { text-align: left; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}