:root {
  color-scheme: dark;
  --ink: #f4f7fc;
  --muted: #9fb0cc;
  --subtle: #7c8aa3;
  --line: rgba(125, 155, 210, 0.122);
  --line-strong: rgba(125, 155, 210, 0.161);
  --panel: rgba(15, 24, 40, 0.88);
  --background: #070b14;
  --surface: #0f1828;
  --surface-raised: #16213a;
  --surface-hero: #10203a;
  --primary: #2d6bff;
  --primary-cta: #2563eb;
  --link: #7fb0ff;
  --brand-start: #1b5cea;
  --brand-end: #2ed0ff;
  --violet: #8b7cf6;
  --accent-ink: #ffffff;
  --verified: #34d399;
  --warm: #f5a524;
  --danger: #f1576a;
  --max: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 280px;
  background:
    radial-gradient(
      circle at 12% 5%,
      rgba(45, 107, 255, 0.2),
      transparent 32rem
    ),
    radial-gradient(
      circle at 90% 20%,
      rgba(139, 124, 246, 0.13),
      transparent 28rem
    ),
    var(--background);
  color: var(--ink);
  font-family:
    Inter,
    ui-sans-serif,
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
  line-height: 1.6;
}

a {
  color: var(--link);
  text-underline-offset: 0.2em;
}

a:hover,
a:focus-visible {
  color: #c2d8ff;
}

.shell {
  width: min(calc(100% - 2rem), var(--max));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  z-index: 10;
  top: 0;
  border-bottom: 1px solid var(--line);
  background: rgba(7, 11, 20, 0.9);
  backdrop-filter: blur(16px);
}

.nav {
  display: flex;
  min-height: 4.5rem;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  color: var(--ink);
  font-weight: 760;
  letter-spacing: -0.02em;
  text-decoration: none;
}

.brand-logo {
  display: block;
  width: 2.65rem;
  height: 2.65rem;
  flex: 0 0 auto;
  filter: drop-shadow(0 0 0.8rem rgba(46, 208, 255, 0.24));
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  font-size: 0.92rem;
}

.nav-links a {
  color: var(--muted);
  text-decoration: none;
}

.nav-links a:hover,
.nav-links a:focus-visible,
.nav-links a[aria-current="page"] {
  color: var(--ink);
}

.hero {
  display: grid;
  min-height: min(46rem, calc(100vh - 4.5rem));
  align-items: center;
  padding-block: 5rem;
  grid-template-columns: minmax(0, 1.25fr) minmax(17rem, 0.75fr);
  gap: clamp(2rem, 7vw, 7rem);
}

.eyebrow {
  margin: 0 0 1rem;
  color: var(--brand-end);
  font-size: 0.78rem;
  font-weight: 760;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  margin-top: 0;
  line-height: 1.08;
  letter-spacing: -0.04em;
}

h1 {
  max-width: 13ch;
  margin-bottom: 1.4rem;
  font-size: clamp(3rem, 8vw, 7rem);
}

.page-title {
  max-width: 18ch;
  font-size: clamp(2.5rem, 6vw, 5.2rem);
}

h2 {
  font-size: clamp(1.65rem, 3vw, 2.55rem);
}

h3 {
  font-size: 1.12rem;
  letter-spacing: -0.02em;
}

.lead {
  max-width: 42rem;
  color: var(--muted);
  font-size: clamp(1.08rem, 2vw, 1.3rem);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.8rem;
  margin-top: 2rem;
}

.play-badge {
  display: inline-flex;
  width: min(14.94rem, 62vw);
  border-radius: 0.6rem;
  line-height: 0;
  transition: filter 150ms ease;
}

.play-badge:hover,
.play-badge:focus-visible {
  filter: brightness(1.08);
}

.play-badge img {
  display: block;
  width: 100%;
  height: auto;
}

.button {
  display: inline-flex;
  min-height: 3rem;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: 0.7rem;
  padding: 0.7rem 1.15rem;
  background: transparent;
  color: var(--ink);
  font: inherit;
  font-weight: 720;
  text-decoration: none;
  cursor: pointer;
}

.button-primary {
  border-color: var(--primary-cta);
  background: var(--primary-cta);
  color: var(--accent-ink);
  box-shadow: 0 0.8rem 2.4rem rgba(37, 99, 235, 0.25);
}

.button-primary:hover,
.button-primary:focus-visible {
  border-color: var(--primary);
  background: var(--primary);
  color: var(--accent-ink);
}

.button-danger {
  border-color: rgba(241, 87, 106, 0.55);
  color: #ffa5b2;
}

.button:disabled {
  cursor: not-allowed;
  opacity: 0.5;
}

.route-card {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line-strong);
  border-radius: 1.5rem;
  padding: 1.6rem;
  background: linear-gradient(
    145deg,
    rgba(22, 33, 58, 0.96),
    rgba(11, 18, 32, 0.96)
  );
  box-shadow:
    0 2rem 6rem rgba(0, 0, 0, 0.38),
    0 0 4rem rgba(45, 107, 255, 0.08);
}

.route-card::after {
  position: absolute;
  width: 10rem;
  height: 10rem;
  border: 1px solid rgba(46, 208, 255, 0.28);
  border-radius: 50%;
  content: "";
  right: -4rem;
  top: -4rem;
}

.route-step {
  display: grid;
  grid-template-columns: 1.8rem 1fr;
  gap: 0.8rem;
  padding-block: 0.9rem;
  border-bottom: 1px solid var(--line);
}

.route-step:last-child {
  border: 0;
}

.route-dot {
  width: 0.72rem;
  height: 0.72rem;
  margin-top: 0.42rem;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--brand-start), var(--brand-end));
  box-shadow: 0 0 1.5rem rgba(46, 208, 255, 0.42);
}

.route-step small {
  display: block;
  color: var(--muted);
}

.section {
  padding-block: clamp(3.5rem, 8vw, 7rem);
}

.section-heading {
  max-width: 42rem;
  margin-bottom: 2.5rem;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.card,
.form-panel,
.notice {
  border: 1px solid var(--line);
  border-radius: 1rem;
  padding: 1.35rem;
  background: var(--panel);
}

.card {
  background: linear-gradient(
    145deg,
    rgba(22, 33, 58, 0.72),
    rgba(15, 24, 40, 0.88)
  );
}

.card p,
.muted {
  color: var(--muted);
}

.page-main {
  max-width: 800px;
  padding-block: clamp(3.5rem, 8vw, 7rem);
}

.page-main > section {
  padding-top: 2rem;
  border-top: 1px solid var(--line);
  margin-top: 2.5rem;
}

.page-main li + li {
  margin-top: 0.45rem;
}

.metadata {
  color: var(--muted);
  font-size: 0.9rem;
}

.form-panel {
  margin-top: 1.5rem;
}

label,
legend {
  display: block;
  margin-bottom: 0.45rem;
  font-weight: 720;
}

input {
  width: 100%;
  min-height: 3rem;
  border: 1px solid var(--line-strong);
  border-radius: 0.6rem;
  padding: 0.75rem;
  background: var(--surface);
  color: var(--ink);
  font: inherit;
}

input:focus-visible,
.button:focus-visible,
.play-badge:focus-visible,
a:focus-visible {
  outline: 3px solid rgba(45, 107, 255, 0.55);
  outline-offset: 3px;
}

.field-help,
.status {
  color: var(--muted);
  font-size: 0.9rem;
}

.status {
  min-height: 1.5rem;
  margin-block: 0.8rem;
}

.status[data-tone="error"] {
  color: var(--danger);
}

.status[data-tone="success"] {
  color: var(--verified);
}

.receipt {
  overflow-wrap: anywhere;
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
}

.notice {
  border-left: 3px solid var(--warm);
}

.site-footer {
  border-top: 1px solid var(--line);
  padding-block: 2.5rem;
  color: var(--muted);
}

.footer-grid {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 2rem;
}

.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  color: var(--ink);
}

.footer-logo {
  width: 2rem;
  height: 2rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

@media (max-width: 760px) {
  .nav {
    align-items: flex-start;
    flex-direction: column;
    padding-block: 0.9rem;
  }

  .nav-links {
    flex-wrap: wrap;
    justify-content: flex-start;
    gap: 0.55rem 0.9rem;
  }

  .hero,
  .grid {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-block: 3.5rem;
  }

  .footer-grid {
    display: block;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .play-badge {
    transition: none;
  }
}