:root {
  color-scheme: dark;
  --background: #020713;
  --surface: #081426;
  --surface-soft: #0d1b30;
  --border: #1c3554;
  --text: #f4f8ff;
  --muted: #a8b5ca;
  --accent: #2c93f9;
  --accent-soft: rgba(44, 147, 249, 0.12);
  --success: #3ddc84;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background:
    radial-gradient(circle at 80% 0%, rgba(44, 147, 249, 0.14), transparent 28rem),
    var(--background);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.7;
}

a {
  color: #69b6ff;
}

a:hover {
  color: #a8d6ff;
}

.site-header {
  border-bottom: 1px solid rgba(168, 181, 202, 0.14);
  background: rgba(2, 7, 19, 0.88);
  backdrop-filter: blur(18px);
}

.header-inner,
.page-shell,
.site-footer {
  width: min(100% - 32px, 920px);
  margin-inline: auto;
}

.header-inner {
  display: flex;
  align-items: center;
  min-height: 76px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--text);
  font-weight: 800;
  letter-spacing: -0.02em;
  text-decoration: none;
}

.brand img {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  object-fit: cover;
  box-shadow: 0 0 24px rgba(44, 147, 249, 0.24);
}

.page-shell {
  padding-block: 64px 72px;
}

.eyebrow {
  margin: 0 0 10px;
  color: #69b6ff;
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  margin-top: 0;
  line-height: 1.22;
}

h1 {
  max-width: 760px;
  margin-bottom: 16px;
  font-size: clamp(2.15rem, 6vw, 4rem);
  letter-spacing: -0.045em;
}

h2 {
  margin-bottom: 14px;
  font-size: clamp(1.35rem, 3vw, 1.7rem);
  letter-spacing: -0.025em;
}

h3 {
  margin-bottom: 8px;
  font-size: 1.05rem;
}

p,
ul,
ol {
  margin-top: 0;
}

.intro {
  max-width: 760px;
  margin-bottom: 18px;
  color: #c7d2e4;
  font-size: 1.08rem;
}

.meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin-bottom: 34px;
  color: var(--muted);
  font-size: 0.92rem;
}

.notice,
.section-card,
.step-card {
  border: 1px solid var(--border);
  border-radius: 18px;
  background: linear-gradient(145deg, rgba(13, 27, 48, 0.92), rgba(8, 20, 38, 0.92));
  box-shadow: 0 18px 48px rgba(0, 0, 0, 0.18);
}

.notice {
  margin-bottom: 34px;
  padding: 20px 22px;
  border-color: rgba(44, 147, 249, 0.45);
  background: var(--accent-soft);
}

.notice p:last-child,
.section-card p:last-child,
.section-card ul:last-child,
.section-card ol:last-child {
  margin-bottom: 0;
}

.section-card {
  margin-bottom: 18px;
  padding: clamp(22px, 4vw, 32px);
}

.section-card ul,
.section-card ol {
  padding-left: 1.25rem;
}

.section-card li + li {
  margin-top: 9px;
}

.section-card strong {
  color: #ffffff;
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 11px 18px;
  border: 1px solid var(--accent);
  border-radius: 12px;
  background: var(--accent);
  color: #001328;
  font-weight: 800;
  text-decoration: none;
}

.button:hover {
  background: #69b6ff;
  color: #001328;
}

.button.secondary {
  background: transparent;
  color: #8cc8ff;
}

.step-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin: 28px 0 34px;
}

.step-card {
  padding: 22px;
}

.step-number {
  display: inline-grid;
  place-items: center;
  width: 34px;
  height: 34px;
  margin-bottom: 15px;
  border-radius: 999px;
  background: var(--accent);
  color: #001328;
  font-weight: 900;
}

.step-card p {
  margin-bottom: 0;
  color: var(--muted);
}

.site-footer {
  padding-block: 0 48px;
  color: var(--muted);
  font-size: 0.9rem;
}

.site-footer-inner {
  padding-top: 22px;
  border-top: 1px solid rgba(168, 181, 202, 0.14);
}

@media (max-width: 720px) {
  .page-shell {
    padding-block: 44px 56px;
  }

  .step-grid {
    grid-template-columns: 1fr;
  }
}

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