:root {
  --bg-top: #0a0420;
  --bg-mid: #12082e;
  --bg-bottom: #05010f;
  --card: rgba(14, 8, 38, 0.72);
  --border: rgba(124, 77, 255, 0.35);
  --cyan: #00eaff;
  --lime: #aeff4d;
  --magenta: #ff2bd6;
  --purple: #7c4dff;
  --text: #eef0ff;
  --text-dim: #a7a9c9;
  --maxw: 820px;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  color: var(--text);
  line-height: 1.7;
  background:
    radial-gradient(1100px 700px at 18% -8%, rgba(124, 77, 255, 0.22), transparent 60%),
    radial-gradient(900px 600px at 100% 0%, rgba(0, 234, 255, 0.12), transparent 55%),
    linear-gradient(180deg, var(--bg-top) 0%, var(--bg-mid) 55%, var(--bg-bottom) 100%);
  background-attachment: fixed;
  display: flex;
  justify-content: center;
  padding: 56px 24px;
}

/* faint arcade grid overlay */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(0, 234, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 43, 214, 0.05) 1px, transparent 1px);
  background-size: 46px 46px;
  z-index: 0;
}

.card {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: var(--maxw);
  background: var(--card);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 56px clamp(28px, 6vw, 72px) 40px;
  box-shadow:
    0 0 0 1px rgba(0, 234, 255, 0.06),
    0 30px 80px rgba(0, 0, 0, 0.55);
}

/* ---------- header ---------- */
.header {
  text-align: center;
  padding-bottom: 34px;
  border-bottom: 1px solid rgba(124, 77, 255, 0.25);
  margin-bottom: 34px;
}

.logo {
  width: 92px;
  height: 92px;
  filter: drop-shadow(0 0 14px rgba(174, 255, 77, 0.45));
}

.brand {
  font-family: 'Press Start 2P', monospace;
  font-size: clamp(20px, 3.4vw, 30px);
  letter-spacing: 1px;
  margin-top: 14px;
  background: linear-gradient(90deg, var(--lime), var(--cyan));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.subtitle {
  margin-top: 16px;
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: 0.5px;
}

.updated {
  margin-top: 8px;
  font-size: 14px;
  color: var(--text-dim);
}

/* ---------- tldr highlight ---------- */
.tldr {
  background: linear-gradient(135deg, rgba(0, 234, 255, 0.1), rgba(174, 255, 77, 0.06));
  border: 1px solid rgba(0, 234, 255, 0.3);
  border-left: 4px solid var(--cyan);
  border-radius: 12px;
  padding: 22px 26px;
  margin-bottom: 38px;
}

.tldr h2 {
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--cyan);
  margin-bottom: 10px;
}

.tldr p {
  font-size: 16px;
  color: var(--text);
}

/* ---------- content ---------- */
.content section {
  margin-bottom: 30px;
}

.content h2 {
  font-size: 19px;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 10px;
  padding-left: 14px;
  border-left: 3px solid var(--magenta);
}

.content p {
  color: var(--text-dim);
  margin-bottom: 10px;
}

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

.content em {
  color: var(--lime);
  font-style: normal;
}

.content ul {
  list-style: none;
  margin: 6px 0 12px;
}

.content li {
  position: relative;
  padding-left: 26px;
  margin-bottom: 8px;
  color: var(--text-dim);
}

.content li::before {
  content: '▹';
  position: absolute;
  left: 4px;
  color: var(--cyan);
}

.contact a {
  display: inline-block;
  font-weight: 700;
  font-size: 17px;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease;
}

.contact a:hover {
  border-color: var(--cyan);
}

/* ---------- footer ---------- */
.footer {
  margin-top: 26px;
  padding-top: 22px;
  border-top: 1px solid rgba(124, 77, 255, 0.25);
  text-align: center;
  color: var(--text-dim);
  font-size: 13px;
}

@media (max-width: 560px) {
  body {
    padding: 28px 14px;
  }
  .card {
    border-radius: 16px;
    padding: 36px 22px 30px;
  }
  .subtitle {
    font-size: 18px;
  }
}