:root {
  --bg: #eff4ff;
  --surface: rgba(255, 255, 255, 0.92);
  --surface-soft: rgba(246, 251, 255, 0.9);
  --line: #cddcf7;
  --line-strong: #a5c0ef;
  --ink: #102646;
  --muted: #4f6486;
  --primary: #1863ff;
  --primary-dark: #0048c3;
  --radius-lg: 20px;
  --radius-md: 14px;
  --shadow: 0 20px 48px rgba(16, 45, 97, 0.12);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: "Manrope", "Segoe UI", system-ui, sans-serif;
  color: var(--ink);
  line-height: 1.62;
  background:
    radial-gradient(900px 360px at -10% -20%, rgba(24, 99, 255, 0.24), transparent 62%),
    radial-gradient(760px 340px at 110% -20%, rgba(0, 182, 159, 0.14), transparent 64%),
    var(--bg);
}

a {
  color: var(--primary-dark);
}

.container {
  width: min(1040px, calc(100% - 32px));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid rgba(165, 192, 239, 0.5);
  background: rgba(239, 244, 255, 0.74);
  backdrop-filter: blur(14px);
}

.header-inner {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--ink);
  font-family: "Space Grotesk", "Manrope", sans-serif;
  font-weight: 700;
}

.brand img {
  width: 36px;
  height: 36px;
  border-radius: 12px;
  box-shadow: 0 8px 18px rgba(10, 59, 146, 0.24);
}

.header-nav {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
}

.header-nav a {
  text-decoration: none;
  font-size: 0.84rem;
  font-weight: 700;
  color: #274770;
  border: 1px solid rgba(165, 192, 239, 0.72);
  background: rgba(255, 255, 255, 0.86);
  border-radius: 999px;
  min-height: 36px;
  display: inline-flex;
  align-items: center;
  padding: 0 12px;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.header-nav a:hover {
  transform: translateY(-1px);
  border-color: #8db5f3;
}

.main {
  padding: 34px 0 52px;
}

.hero {
  border: 1px solid rgba(165, 192, 239, 0.72);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  padding: 22px;
  background: linear-gradient(146deg, rgba(255, 255, 255, 0.95), rgba(247, 252, 255, 0.88));
}

.hero h1 {
  margin: 0 0 8px;
  font-family: "Space Grotesk", "Manrope", sans-serif;
  font-size: clamp(1.52rem, 1.28rem + 1.2vw, 2.08rem);
}

.lead {
  margin: 0;
  color: var(--muted);
}

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

.meta-row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  font-size: 0.87rem;
  color: #32567f;
  border: 1px solid rgba(184, 206, 243, 0.84);
  border-radius: 11px;
  background: var(--surface-soft);
  padding: 9px 11px;
}

.meta-row strong {
  color: #153f76;
}

.content {
  margin-top: 18px;
  display: grid;
  gap: 12px;
}

.card {
  background: var(--surface);
  border: 1px solid rgba(165, 192, 239, 0.64);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  padding: 18px;
}

.card h2,
.card h3 {
  margin: 0 0 10px;
  font-family: "Space Grotesk", "Manrope", sans-serif;
}

.card ul,
.card ol {
  margin: 0;
  padding-left: 20px;
}

.card li {
  margin-bottom: 6px;
}

.warning {
  border: 1px solid rgba(255, 111, 134, 0.45);
  background: rgba(255, 228, 232, 0.84);
  color: #8f2e3b;
  border-radius: 12px;
  padding: 10px 12px;
  font-size: 0.84rem;
}

.site-footer {
  border-top: 1px solid rgba(99, 135, 200, 0.48);
  background: linear-gradient(180deg, #12284a, #0d1f3c);
}

.footer-inner {
  padding: 24px 0 26px;
}

.doc-links {
  display: grid;
  gap: 8px;
}

.doc-links a {
  text-decoration: none;
  font-size: 0.88rem;
  color: #bfd1f0;
}

.copy {
  margin: 12px 0 0;
  font-size: 0.78rem;
  color: #9db3d7;
}

@media (max-width: 840px) {
  .header-inner {
    min-height: 68px;
  }

  .header-nav {
    display: none;
  }
}

@media (max-width: 760px) {
  .meta-row {
    flex-direction: column;
  }

  .main {
    padding-top: 26px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}