:root {
  color-scheme: dark;
  --background: #030316;
  --surface: #121321;
  --surface-soft: #191b2b;
  --border: #2a2d42;
  --text: #f5f6ff;
  --muted: #b8bbcc;
  --accent: #9aaeff;
  --accent-strong: #7d95ff;
  --success: #71d8bb;
  --content-width: 920px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 280px;
  background: var(--background);
  color: var(--text);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

a:hover {
  color: #c5d0ff;
}

a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

.skip-link {
  position: fixed;
  z-index: 20;
  top: 12px;
  left: 12px;
  transform: translateY(-180%);
  padding: 10px 14px;
  border-radius: 8px;
  background: var(--text);
  color: #090a12;
  font-weight: 700;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: sticky;
  z-index: 10;
  top: 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(3, 3, 22, 0.94);
  backdrop-filter: blur(14px);
}

.header-inner,
.content,
.footer-inner {
  width: min(calc(100% - 40px), var(--content-width));
  margin-inline: auto;
}

.header-inner {
  display: flex;
  min-height: 68px;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-size: 1.04rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  text-decoration: none;
  white-space: nowrap;
}

.brand-mark {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border-radius: 10px;
  background: var(--accent-strong);
  color: #090b20;
  font-size: 1.15rem;
  line-height: 1;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: 4px 18px;
}

.site-nav a {
  color: var(--muted);
  font-size: 0.91rem;
  font-weight: 650;
  text-decoration: none;
}

.site-nav a[aria-current="page"],
.site-nav a:hover {
  color: var(--text);
}

.content {
  padding-block: 64px 80px;
}

.hero {
  padding-bottom: 34px;
  border-bottom: 1px solid var(--border);
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--success);
  font-size: 0.84rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  line-height: 1.25;
  letter-spacing: -0.025em;
}

h1 {
  max-width: 760px;
  margin: 0;
  font-size: clamp(2rem, 6vw, 3.6rem);
}

h2 {
  margin: 48px 0 14px;
  font-size: clamp(1.35rem, 3vw, 1.8rem);
}

h3 {
  margin: 28px 0 8px;
  font-size: 1.12rem;
}

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

li + li {
  margin-top: 7px;
}

.lede {
  max-width: 760px;
  margin: 16px 0 0;
  color: var(--muted);
  font-size: 1.08rem;
}

.meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 18px;
  margin-top: 18px;
  color: var(--muted);
  font-size: 0.92rem;
}

.language-jump {
  display: inline-flex;
  gap: 6px;
  margin-top: 22px;
  padding: 5px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface);
}

.language-jump a {
  padding: 5px 11px;
  border-radius: 8px;
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 700;
  text-decoration: none;
}

.language-jump a:first-child {
  background: var(--surface-soft);
  color: var(--text);
}

.notice,
.contact-card {
  margin: 28px 0;
  padding: 20px 22px;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: var(--surface);
}

.notice strong {
  color: var(--success);
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin: 28px 0;
}

.summary-card {
  padding: 20px;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: var(--surface);
}

.summary-card h2,
.summary-card h3 {
  margin-top: 0;
}

.summary-card p:last-child,
.notice p:last-child,
.contact-card p:last-child {
  margin-bottom: 0;
}

.table-wrap {
  margin: 22px 0;
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: 14px;
}

table {
  width: 100%;
  min-width: 620px;
  border-collapse: collapse;
  background: var(--surface);
}

th,
td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}

th {
  color: var(--text);
  font-size: 0.9rem;
}

td {
  color: var(--muted);
}

tr:last-child td {
  border-bottom: 0;
}

.section-divider {
  margin: 64px 0 0;
  padding-top: 6px;
  border-top: 1px solid var(--border);
}

.steps {
  padding-left: 1.25rem;
}

.steps li {
  padding-left: 0.3rem;
}

code {
  padding: 0.12em 0.35em;
  border-radius: 5px;
  background: var(--surface-soft);
  color: #d9dfff;
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 0.92em;
}

.site-footer {
  border-top: 1px solid var(--border);
  background: #080918;
}

.footer-inner {
  display: flex;
  min-height: 112px;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  color: var(--muted);
  font-size: 0.9rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
}

.footer-links a {
  color: var(--muted);
}

@media (max-width: 720px) {
  .header-inner {
    align-items: flex-start;
    flex-direction: column;
    gap: 10px;
    padding-block: 14px;
  }

  .site-header {
    position: static;
  }

  .site-nav {
    justify-content: flex-start;
  }

  .content {
    padding-block: 42px 64px;
  }

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

  .footer-inner {
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
    padding-block: 28px;
  }
}

@media (max-width: 420px) {
  .header-inner,
  .content,
  .footer-inner {
    width: min(calc(100% - 28px), var(--content-width));
  }

  .site-nav {
    gap: 5px 13px;
  }

  .notice,
  .contact-card,
  .summary-card {
    padding: 17px;
  }
}

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