:root {
  --ground: #05080d !important;
  --surface: #0c131d !important;
  --text-hi: #f4f8fb !important;
  --text-lo: #96a3af !important;
  --hairline: rgba(255,255,255,.105) !important;
  --cyan: #45dcff !important;
  --blue: #5b7cff !important;
}

html { scroll-behavior: smooth; background: var(--ground); }

body {
  min-width: 320px;
  min-height: 100vh;
  overflow-x: hidden;
  background:
    radial-gradient(800px 520px at 15% -12%, rgba(69,220,255,.11), transparent 68%),
    radial-gradient(850px 560px at 100% 30%, rgba(141,107,255,.09), transparent 70%),
    linear-gradient(180deg, #070b11 0%, var(--ground) 45%, #030509 100%) !important;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  content: "";
  opacity: .22;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: linear-gradient(to bottom, #000, transparent 82%);
}

::selection { color: #061016; background: var(--cyan); }

.wrap { max-width: 820px !important; }

header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom-color: var(--hairline) !important;
  background: rgba(5,8,13,.76);
  box-shadow: 0 14px 40px rgba(0,0,0,.18);
  backdrop-filter: blur(20px) saturate(140%);
}

.bar { min-height: 76px; padding-block: 14px !important; }

.mark {
  color: var(--text-hi) !important;
  font-size: 15px !important;
  font-weight: 800 !important;
  letter-spacing: .21em !important;
}

.bar a {
  display: inline-flex;
  min-height: 36px;
  align-items: center;
  padding: 7px 11px;
  border: 1px solid var(--hairline);
  border-radius: 999px;
  transition: color .25s ease, border-color .25s ease, background .25s ease, transform .25s ease;
}

.bar a:hover {
  border-color: rgba(69,220,255,.35);
  background: rgba(69,220,255,.055);
  text-decoration: none !important;
  transform: translateY(-1px);
}

.logo svg, .logo img {
  width: 34px !important;
  height: 34px !important;
  border-radius: 9px;
  filter: drop-shadow(0 0 15px rgba(69,220,255,.32)) !important;
}

main.wrap,
body > main:not(.wrap) {
  position: relative;
  margin-top: 48px !important;
  margin-bottom: 68px !important;
  padding: clamp(28px, 5vw, 52px) !important;
  border: 1px solid var(--hairline);
  border-radius: 28px;
  background: linear-gradient(145deg, rgba(15,23,34,.82), rgba(7,11,17,.76));
  box-shadow: 0 30px 90px rgba(0,0,0,.35), inset 0 1px rgba(255,255,255,.045);
}

body > main:not(.wrap) { max-width: 620px !important; }

h1 {
  color: var(--text-hi);
  font-size: clamp(32px, 5vw, 48px) !important;
  line-height: 1.08 !important;
  letter-spacing: -.045em !important;
  text-wrap: balance;
}

h1::after {
  display: block;
  width: 62px;
  height: 2px;
  margin-top: 23px;
  border-radius: 2px;
  content: "";
  background: linear-gradient(90deg, var(--cyan), var(--blue));
  box-shadow: 0 0 18px rgba(69,220,255,.36);
}

h2 {
  margin-top: 38px !important;
  color: var(--text-hi) !important;
  font-size: 19px !important;
  line-height: 1.3;
  letter-spacing: -.015em;
}

h2::before {
  display: inline-block;
  width: 6px;
  height: 6px;
  margin: 0 10px 3px 0;
  border-radius: 50%;
  content: "";
  background: var(--cyan);
  box-shadow: 0 0 10px rgba(69,220,255,.6);
}

.result h2 { margin-top: 0 !important; }

.upd, .eyebrow {
  color: var(--cyan) !important;
  font-size: 10px !important;
  letter-spacing: .12em !important;
  text-transform: uppercase;
}

p, li { line-height: 1.76; }

li { padding-left: 3px; }
li::marker { color: var(--cyan); }

a { transition: color .2s ease; }
a.c, main a { color: var(--cyan); text-underline-offset: 4px; }

.requisites, .note, .result {
  border-color: var(--hairline) !important;
  border-radius: 15px !important;
  background: rgba(5,8,13,.55) !important;
  box-shadow: inset 0 1px rgba(255,255,255,.035);
}

.requisites, .note { padding: 20px 22px !important; }

form { gap: 16px !important; }

input, #code {
  min-height: 56px;
  border-color: var(--hairline) !important;
  border-radius: 13px !important;
  background: rgba(5,8,13,.72) !important;
  transition: border-color .25s ease, box-shadow .25s ease, background .25s ease;
}

input:focus, #code:focus {
  border-color: var(--cyan) !important;
  background: rgba(8,15,23,.92) !important;
  box-shadow: 0 0 0 4px rgba(69,220,255,.07), 0 0 34px rgba(69,220,255,.1) !important;
}

button:not(.copy):not(.secondary) {
  min-height: 52px;
  color: #061016;
  border: 0 !important;
  border-radius: 13px !important;
  background: linear-gradient(115deg, #92edff, var(--cyan) 44%, #7894ff) !important;
  box-shadow: 0 13px 34px rgba(69,220,255,.15), inset 0 1px rgba(255,255,255,.65);
  transition: transform .25s ease, box-shadow .25s ease, opacity .25s ease;
}

button:not(.copy):not(.secondary):hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 18px 42px rgba(69,220,255,.23), inset 0 1px rgba(255,255,255,.75);
}

button.copy, button.secondary {
  min-height: 44px;
  max-width: 100%;
  padding: 10px 14px;
  border: 1px solid #304455;
  border-radius: 10px;
  background: #111e2a;
  color: #f4f8fb;
  font-family: var(--sans);
  font-size: 13px;
  font-weight: 600;
  line-height: 1.4;
  letter-spacing: normal;
  text-transform: none;
  white-space: normal;
  box-shadow: none;
  transition: background .2s ease, border-color .2s ease;
}

button.copy:hover:not(:disabled), button.secondary:hover:not(:disabled) {
  border-color: var(--cyan);
  background: #182a39;
  box-shadow: none;
  transform: none;
}

button:disabled { opacity: .55; }

footer.wrap {
  max-width: 820px !important;
  margin-top: 0 !important;
  border-top-color: var(--hairline) !important;
}

footer a { text-decoration: none; transition: color .2s ease; }

a:focus-visible, button:focus-visible, input:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 4px;
}

@media (max-width: 640px) {
  .wrap { padding-inline: 15px !important; }
  .bar { min-height: 68px; }
  .bar .eyebrow { display: none; }
  main.wrap, body > main:not(.wrap) {
    margin-top: 20px !important;
    margin-bottom: 36px !important;
    padding: 25px 20px !important;
    border-radius: 20px;
  }
  h1 { font-size: 34px !important; }
  h2 { font-size: 18px !important; }
  .trust-note { padding: 14px 15px !important; }
  #code { font-size: clamp(17px, 5.2vw, 21px); letter-spacing: .08em; }
  .result { padding: 18px !important; }
  .link-box { grid-template-columns: minmax(0, 1fr); align-items: stretch; }
  .copy { width: 100%; }
  .page-links { flex-direction: column; gap: 9px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}