:root {
  --kiinos-green: #2f4a3d;
  --kiinos-silver: #b6b5b5;
  --ink: #1a1a1a;
  --muted: #4a4a4a;
  --bg: #fbfbfa;
}

* {
  box-sizing: border-box;
}

html, body {
  height: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.doc {
  flex: 1;
  max-width: 680px;
  margin: 0 auto;
  padding: 4rem 1.5rem 2rem;
  line-height: 1.65;
}

.back {
  display: inline-block;
  margin-bottom: 2.5rem;
  color: var(--kiinos-green);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
}

.back:hover {
  text-decoration: underline;
}

h1 {
  font-size: 1.9rem;
  color: var(--kiinos-green);
  margin: 0 0 0.4rem;
  letter-spacing: -0.01em;
}

.meta {
  color: var(--kiinos-silver);
  font-size: 0.85rem;
  margin: 0 0 2.25rem;
}

h2 {
  font-size: 1.05rem;
  color: var(--kiinos-green);
  margin: 2.25rem 0 0.75rem;
}

p, li {
  color: var(--muted);
  font-size: 0.98rem;
}

ul {
  padding-left: 1.25rem;
}

li + li {
  margin-top: 0.5rem;
}

a {
  color: var(--kiinos-green);
}

footer {
  text-align: center;
  padding: 1.5rem 1rem 2rem;
}

footer p {
  margin: 0;
  font-size: 0.8rem;
  color: var(--kiinos-silver);
  letter-spacing: 0.02em;
}

@media (max-width: 480px) {
  h1 {
    font-size: 1.5rem;
  }
}