:root {
  --bg: #f5f9f7;
  --ink: #133328;
  --muted: #4b6b60;
  --line: rgba(19, 51, 40, 0.15);
  --green: #0f8d6a;
}

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

body {
  font-family: "Manrope", "Segoe UI", sans-serif;
  color: var(--ink);
  background: linear-gradient(160deg, #f8fbf9 0%, var(--bg) 60%, #edf3f0 100%);
  line-height: 1.7;
}

a { color: var(--green); text-decoration: none; }
a:hover { text-decoration: underline; }

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid var(--line);
  background: rgba(248, 252, 250, 0.92);
  backdrop-filter: blur(8px);
}

.topbar .inner {
  width: min(900px, calc(100% - 36px));
  margin: 0 auto;
  padding: 12px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand {
  font-weight: 800;
  letter-spacing: 0.02em;
}

.back {
  display: inline-block;
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--green);
  font-weight: 700;
  background: rgba(255, 255, 255, 0.86);
}

.wrap {
  width: min(900px, calc(100% - 36px));
  margin: 0 auto;
  padding: 30px 0 70px;
}

h1 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 2.8rem);
  line-height: 1.1;
}

.subtitle {
  margin-top: 8px;
  margin-bottom: 24px;
  color: var(--muted);
}

h2 {
  margin: 30px 0 8px;
  font-size: 1.16rem;
  line-height: 1.25;
}

p {
  margin: 0 0 8px;
}

ul {
  margin: 6px 0 0;
  padding-left: 18px;
}

li {
  margin-bottom: 6px;
}

hr {
  border: none;
  border-top: 1px solid var(--line);
  margin: 24px 0;
}

.muted {
  color: var(--muted);
}