:root {
  --red:    #ff4d4d;
  --yellow: #ffd429;
  --blue:   #2e8bff;
  --green:  #2ecc71;
  --pink:   #ff7ab8;
  --purple: #9b59ff;
  --ink:    #1a1d2e;
  --paper:  #fffdf5;
  --soft:   #f6f1e3;
}

*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; }
body {
  font-family: 'Avenir Next', system-ui, -apple-system, Segoe UI, sans-serif;
  background: var(--paper);
  color: var(--ink);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

.bar {
  height: 12px;
  background: linear-gradient(90deg,
    var(--red)    0% 20%,
    var(--yellow) 20% 40%,
    var(--green)  40% 60%,
    var(--blue)   60% 80%,
    var(--purple) 80% 100%);
}

.wrap { max-width: 760px; margin: 0 auto; padding: 36px 24px; }

.hero { text-align: center; padding: 56px 24px 32px; }
.hero img.icon {
  width: 128px; height: 128px;
  border-radius: 28px;
  border: 4px solid var(--ink);
  box-shadow: 6px 8px 0 var(--ink);
}
.hero h1 {
  margin: 22px 0 6px;
  font-size: 56px;
  font-weight: 900;
  letter-spacing: -0.5px;
}
.hero h1 .red  { color: var(--red);  text-shadow: 3px 3px 0 var(--yellow), 6px 6px 0 var(--ink); }
.hero h1 .blue { color: var(--blue); text-shadow: 3px 3px 0 var(--yellow), 6px 6px 0 var(--ink); }
.hero p.tagline {
  font-size: 19px;
  color: var(--ink);
  opacity: 0.8;
  margin: 18px auto 0;
  max-width: 520px;
}

.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-top: 36px;
}
.feature {
  background: white;
  border: 3px solid var(--ink);
  border-radius: 18px;
  padding: 18px;
  box-shadow: 4px 5px 0 var(--ink);
}
.feature .emoji { font-size: 32px; }
.feature h3 { margin: 8px 0 4px; font-size: 17px; }
.feature p  { margin: 0; font-size: 14px; opacity: 0.75; }

footer {
  margin-top: 48px;
  padding: 24px 0 36px;
  text-align: center;
  font-size: 14px;
  color: var(--ink);
  opacity: 0.65;
}
footer a { color: var(--ink); margin: 0 8px; }

.doc h1 { font-size: 32px; margin-bottom: 4px; }
.doc .updated { color: var(--ink); opacity: 0.55; font-size: 13px; }
.doc h2 { font-size: 19px; margin-top: 28px; }
.doc p, .doc li { font-size: 16px; }
.doc a { color: var(--blue); }
.doc .back {
  display: inline-block;
  margin-bottom: 18px;
  font-size: 14px;
  color: var(--ink);
  opacity: 0.65;
  text-decoration: none;
}
.doc .back:hover { opacity: 1; }