:root {
  color-scheme: dark;
  --bg: #04070f;
  --bg2: #0b1220;
  --panel: rgba(10, 18, 33, 0.86);
  --border: rgba(107, 232, 255, 0.18);
  --text: #eef7ff;
  --muted: rgba(238, 247, 255, 0.72);
  --soft: rgba(238, 247, 255, 0.48);
  --accent: #6ee7ff;
  --accent-2: #8b5cf6;
  --warn: #f59e0b;
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body {
  font-family: Outfit, "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top, rgba(86, 199, 255, 0.16), transparent 32%),
    radial-gradient(circle at 80% 15%, rgba(139, 92, 246, 0.15), transparent 24%),
    linear-gradient(180deg, #050911 0%, #05070d 40%, #04060b 100%);
}

a { color: var(--accent); }

a:hover { color: #c6f7ff; }

.shell {
  width: min(1040px, calc(100vw - 28px));
  margin: 0 auto;
  padding: 28px 0 80px;
}

.hero {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(16, 22, 38, 0.88), rgba(8, 12, 22, 0.96));
  border-radius: 32px;
  padding: 28px;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.45);
}

.hero::after {
  content: "";
  position: absolute;
  inset: auto -10% -35% auto;
  width: 380px;
  height: 380px;
  border-radius: 999px;
  background: radial-gradient(circle, rgba(110, 231, 255, 0.22), transparent 68%);
  pointer-events: none;
}

.brand {
  display: flex;
  align-items: center;
  gap: 16px;
}

.brand img {
  width: 72px;
  height: 72px;
  border-radius: 24px;
  border: 1px solid rgba(255,255,255,0.12);
  box-shadow: 0 0 28px rgba(110, 231, 255, 0.18);
}

.kicker {
  margin: 0 0 8px;
  text-transform: uppercase;
  letter-spacing: 0.28em;
  font-size: 11px;
  color: var(--accent);
}

h1 {
  margin: 0;
  font-size: clamp(2rem, 5vw, 3.65rem);
  line-height: 1.02;
}

.subtitle {
  margin: 14px 0 0;
  max-width: 760px;
  color: var(--muted);
  line-height: 1.7;
  font-size: 1rem;
}

.meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.1);
  background: rgba(255,255,255,0.04);
  padding: 10px 14px;
  font-size: 12px;
  color: var(--soft);
}

.layout {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: 18px;
  margin-top: 18px;
}

.nav,
.content,
.notice {
  border: 1px solid var(--border);
  background: var(--panel);
  border-radius: 28px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.28);
}

.nav {
  position: sticky;
  top: 18px;
  align-self: start;
  padding: 18px;
}

.nav h2,
.content h2,
.notice h2 {
  margin: 0 0 14px;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.22em;
  color: var(--accent);
}

.nav a {
  display: block;
  padding: 10px 12px;
  border-radius: 16px;
  text-decoration: none;
  color: var(--muted);
}

.nav a:hover {
  background: rgba(255,255,255,0.05);
}

.content {
  padding: 26px;
}

.content section + section {
  margin-top: 28px;
  padding-top: 28px;
  border-top: 1px solid rgba(255,255,255,0.08);
}

.content p,
.content li {
  color: var(--muted);
  line-height: 1.75;
  font-size: 15px;
}

.content ul,
.content ol {
  margin: 12px 0 0;
  padding-left: 22px;
}

.content strong {
  color: var(--text);
}

.notice {
  margin-top: 18px;
  padding: 22px;
}

.notice p {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 20px;
  font-size: 14px;
}

code {
  font-family: "SFMono-Regular", ui-monospace, monospace;
  font-size: 0.92em;
  color: #d8f8ff;
}

@media (max-width: 860px) {
  .shell { width: min(100vw - 18px, 100%); padding-top: 12px; }
  .hero { padding: 22px; border-radius: 24px; }
  .layout { grid-template-columns: 1fr; }
  .nav { position: static; }
  .content, .notice { padding: 20px; border-radius: 24px; }
  .brand { align-items: flex-start; }
  .brand img { width: 60px; height: 60px; border-radius: 18px; }
}