:root {
  --bg: #000000;
  --panel: #0a0a0a;
  --panel-soft: #111111;
  --text: #ffffff;
  --muted: #9a9a9a;
  --line: rgba(255, 255, 255, 0.08);
  --line-strong: rgba(255, 255, 255, 0.14);
  --white: #ffffff;
  --black: #000000;
  --success: #ffffff;
  --shadow: 0 18px 40px rgba(0, 0, 0, 0.28);
  --radius-xl: 28px;
  --radius-lg: 22px;
  --radius-md: 16px;
  --font-display: "Space Grotesk", "Avenir Next", "Trebuchet MS", sans-serif;
  --font-body: "Inter", "Avenir Next", "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
}

body {
  padding: 14px 14px 28px;
}

.shell {
  max-width: 720px;
  margin: 0 auto;
}

.dev-banner,
.hero,
.method,
.footer-note {
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.dev-banner {
  margin-bottom: 12px;
  padding: 12px 14px;
  border-radius: var(--radius-md);
  background: var(--panel-soft);
}

.dev-banner p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.45;
}

.hero {
  padding: 22px 20px;
  border-radius: var(--radius-xl);
  background: var(--panel);
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}

h1,
h2 {
  margin: 0;
  font-family: var(--font-display);
  letter-spacing: -0.04em;
}

h1 {
  font-size: clamp(32px, 7vw, 46px);
  line-height: 0.94;
  font-weight: 800;
}

.lead {
  margin: 12px 0 0;
  max-width: 380px;
  color: var(--muted);
  font-size: 15px;
  font-weight: 500;
  line-height: 1.5;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.pill {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0 13px;
  border: 1px solid var(--white);
  border-radius: 999px;
  background: var(--white);
  color: var(--black);
  font-size: 13px;
  font-weight: 800;
}

.pill.accent {
  background: var(--white);
  color: var(--black);
  border-color: var(--white);
}

.methods {
  display: grid;
  gap: 12px;
  margin-top: 14px;
}

.method {
  position: relative;
  overflow: hidden;
  padding: 20px 18px 18px;
  border-radius: var(--radius-lg);
  background: var(--panel);
}

.method > * {
  position: relative;
  z-index: 1;
}

.method-stars::before {
  content: "✦";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.24;
  color: rgba(255, 255, 255, 0.22);
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 700;
  line-height: 1;
  transform: translate(16%, 15%);
  text-shadow:
    0 0 0 rgba(255, 255, 255, 0.26),
    94px 20px 0 rgba(255, 255, 255, 0.21),
    194px 36px 0 rgba(255, 255, 255, 0.18),
    34px 124px 0 rgba(255, 255, 255, 0.18),
    144px 116px 0 rgba(255, 255, 255, 0.23),
    256px 14px 0 rgba(255, 255, 255, 0.17),
    272px 138px 0 rgba(255, 255, 255, 0.18),
    68px 64px 0 rgba(255, 255, 255, 0.16),
    220px 86px 0 rgba(255, 255, 255, 0.2),
    118px 48px 0 rgba(255, 255, 255, 0.2),
    182px 150px 0 rgba(255, 255, 255, 0.16);
}

.method-stars::after {
  content: "✦";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.21;
  color: rgba(255, 255, 255, 0.19);
  font-family: var(--font-display);
  font-size: 8px;
  font-weight: 700;
  line-height: 1;
  transform: translate(24%, 22%);
  text-shadow:
    78px 14px 0 rgba(255, 255, 255, 0.18),
    156px 52px 0 rgba(255, 255, 255, 0.16),
    236px 28px 0 rgba(255, 255, 255, 0.145),
    28px 96px 0 rgba(255, 255, 255, 0.135),
    118px 136px 0 rgba(255, 255, 255, 0.16),
    246px 118px 0 rgba(255, 255, 255, 0.145),
    54px 42px 0 rgba(255, 255, 255, 0.135),
    204px 104px 0 rgba(255, 255, 255, 0.16);
}

.method-crypto::before {
  content: "₿";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  color: rgba(255, 255, 255, 0.075);
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  line-height: 1;
  transform: translate(16%, 18%);
  text-shadow:
    102px 18px rgba(255, 255, 255, 0.065),
    208px 54px rgba(255, 255, 255, 0.058),
    46px 132px rgba(255, 255, 255, 0.058),
    168px 126px rgba(255, 255, 255, 0.072),
    252px 30px rgba(255, 255, 255, 0.058),
    274px 144px rgba(255, 255, 255, 0.052);
}

.method-card::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.16;
  background-image:
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='22' height='14' viewBox='0 0 22 14' fill='none'%3E%3Crect x='0.75' y='0.75' width='20.5' height='12.5' rx='3.25' stroke='white' stroke-opacity='0.92' stroke-width='1.5'/%3E%3Crect x='3.5' y='4' width='15' height='1.5' rx='0.75' fill='white' fill-opacity='0.92'/%3E%3Crect x='4' y='8.25' width='4.5' height='1.5' rx='0.75' fill='white' fill-opacity='0.78'/%3E%3C/svg%3E"),
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='22' height='14' viewBox='0 0 22 14' fill='none'%3E%3Crect x='0.75' y='0.75' width='20.5' height='12.5' rx='3.25' stroke='white' stroke-opacity='0.88' stroke-width='1.5'/%3E%3Crect x='3.5' y='4' width='15' height='1.5' rx='0.75' fill='white' fill-opacity='0.88'/%3E%3Crect x='4' y='8.25' width='4.5' height='1.5' rx='0.75' fill='white' fill-opacity='0.72'/%3E%3C/svg%3E"),
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='22' height='14' viewBox='0 0 22 14' fill='none'%3E%3Crect x='0.75' y='0.75' width='20.5' height='12.5' rx='3.25' stroke='white' stroke-opacity='0.84' stroke-width='1.5'/%3E%3Crect x='3.5' y='4' width='15' height='1.5' rx='0.75' fill='white' fill-opacity='0.84'/%3E%3Crect x='4' y='8.25' width='4.5' height='1.5' rx='0.75' fill='white' fill-opacity='0.68'/%3E%3C/svg%3E"),
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='22' height='14' viewBox='0 0 22 14' fill='none'%3E%3Crect x='0.75' y='0.75' width='20.5' height='12.5' rx='3.25' stroke='white' stroke-opacity='0.9' stroke-width='1.5'/%3E%3Crect x='3.5' y='4' width='15' height='1.5' rx='0.75' fill='white' fill-opacity='0.9'/%3E%3Crect x='4' y='8.25' width='4.5' height='1.5' rx='0.75' fill='white' fill-opacity='0.75'/%3E%3C/svg%3E"),
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='22' height='14' viewBox='0 0 22 14' fill='none'%3E%3Crect x='0.75' y='0.75' width='20.5' height='12.5' rx='3.25' stroke='white' stroke-opacity='0.82' stroke-width='1.5'/%3E%3Crect x='3.5' y='4' width='15' height='1.5' rx='0.75' fill='white' fill-opacity='0.82'/%3E%3Crect x='4' y='8.25' width='4.5' height='1.5' rx='0.75' fill='white' fill-opacity='0.66'/%3E%3C/svg%3E"),
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='22' height='14' viewBox='0 0 22 14' fill='none'%3E%3Crect x='0.75' y='0.75' width='20.5' height='12.5' rx='3.25' stroke='white' stroke-opacity='0.86' stroke-width='1.5'/%3E%3Crect x='3.5' y='4' width='15' height='1.5' rx='0.75' fill='white' fill-opacity='0.86'/%3E%3Crect x='4' y='8.25' width='4.5' height='1.5' rx='0.75' fill='white' fill-opacity='0.7'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-size: 18px 12px, 17px 11px, 16px 11px, 18px 12px, 16px 11px, 17px 11px;
  background-position:
    14% 20%,
    40% 69%,
    72% 18%,
    84% 52%,
    58% 80%,
    29% 48%;
}

.method-promo::before {
  content: "S";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  color: rgba(255, 255, 255, 0.065);
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 700;
  line-height: 1;
  transform: translate(16%, 18%);
  text-shadow:
    92px 18px rgba(255, 255, 255, 0.058),
    192px 42px rgba(255, 255, 255, 0.052),
    42px 128px rgba(255, 255, 255, 0.052),
    154px 118px rgba(255, 255, 255, 0.062),
    258px 24px rgba(255, 255, 255, 0.05),
    270px 144px rgba(255, 255, 255, 0.05);
}

.method-kicker {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 0 12px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: var(--black);
  color: var(--white);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.18em;
}

.method h2 {
  margin-top: 14px;
  font-size: 32px;
  line-height: 0.96;
  font-weight: 800;
}

.promo-stack {
  margin-top: 16px;
  display: grid;
  gap: 10px;
}

.promo-input {
  width: 100%;
  min-height: 52px;
  padding: 0 16px;
  border: 1px solid var(--line-strong);
  border-radius: 18px;
  outline: none;
  background: var(--panel-soft);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 600;
}

.promo-input::placeholder {
  color: rgba(255, 255, 255, 0.4);
}

.promo-input:focus {
  border-color: rgba(255, 255, 255, 0.28);
}

.promo-feedback {
  min-height: 20px;
  color: rgba(255, 255, 255, 0.68);
  font-size: 13px;
  font-weight: 600;
  line-height: 1.4;
}

.promo-feedback.error {
  color: rgba(255, 255, 255, 0.56);
}

.promo-feedback.success {
  color: rgba(255, 255, 255, 0.82);
}

.method-copy {
  margin: 10px 0 0;
  max-width: 320px;
  color: var(--muted);
  font-size: 15px;
  font-weight: 500;
  line-height: 1.48;
}

.method-note {
  margin-top: 16px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
  line-height: 1.4;
}

.method-note.success {
  color: var(--success);
}

.action-button {
  margin-top: 14px;
  min-height: 54px;
  width: 100%;
  border: 1px solid var(--line-strong);
  border-radius: 18px;
  background: transparent;
  color: var(--text);
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 800;
  cursor: pointer;
  transition: opacity 160ms ease, transform 160ms ease;
}

.action-button:enabled:hover {
  transform: translateY(-1px);
}

.action-button.primary {
  background: var(--white);
  border-color: var(--white);
  color: var(--black);
}

.action-button.muted {
  background: var(--panel-soft);
  color: var(--text);
}

.action-button:disabled {
  opacity: 0.55;
  cursor: default;
}

.footer-note {
  margin-top: 12px;
  padding: 16px 18px;
  border-radius: 20px;
  background: var(--panel-soft);
}

.footer-note p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  font-weight: 500;
  line-height: 1.5;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 18px;
  transform: translateX(-50%);
  max-width: min(92vw, 420px);
  padding: 14px 16px;
  border: 1px solid var(--line-strong);
  border-radius: 16px;
  background: #000000;
  color: #fff;
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.34);
  font-size: 14px;
  line-height: 1.45;
}

@media (max-width: 520px) {
  body {
    padding: 10px 10px 24px;
  }

  .hero,
  .method,
  .footer-note {
    padding-left: 16px;
    padding-right: 16px;
  }

  .hero {
    width: min(100%, 348px);
    margin: 0 auto;
    padding-top: 16px;
    padding-bottom: 16px;
    border-radius: 24px;
  }

  .eyebrow {
    margin-bottom: 8px;
    font-size: 10px;
    letter-spacing: 0.18em;
  }

  h1 {
    font-size: 30px;
    line-height: 0.98;
  }

  .lead {
    margin-top: 10px;
    font-size: 14px;
    line-height: 1.4;
  }

  .hero-meta {
    gap: 8px;
    margin-top: 14px;
  }

  .pill {
    min-height: 30px;
    padding: 0 11px;
    font-size: 12px;
  }

  .method h2 {
    font-size: 29px;
  }
}