:root {
  --green: #1e7a36;
  --green-dark: #155a27;
  --green-light: #e7f4ec;
  --ink: #14241a;
  --muted: #5b6b61;
  --bg: #f6f8f7;
  --card: #ffffff;
  --border: #e2e8e4;
  --radius: 14px;
  --maxw: 760px;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
}

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

.site-header {
  background: var(--green);
  color: #fff;
}

.nav {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  text-decoration: none;
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.2px;
}

.brand .dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: #fff;
  display: inline-block;
}

.nav-links { display: flex; gap: 18px; flex-wrap: wrap; }
.nav-links a {
  color: #eafff0;
  text-decoration: none;
  font-size: 0.95rem;
}
.nav-links a:hover { text-decoration: underline; }

main {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 28px 20px 64px;
}

.hero {
  background: linear-gradient(135deg, var(--green), var(--green-dark));
  color: #fff;
  border-radius: var(--radius);
  padding: 36px 28px;
  margin-bottom: 28px;
}
.hero h1 { margin: 0 0 8px; font-size: 1.8rem; }
.hero p { margin: 0; opacity: 0.95; }

h1 { font-size: 1.7rem; line-height: 1.25; }
h2 { font-size: 1.2rem; margin-top: 2em; }
h3 { font-size: 1.02rem; }

.muted { color: var(--muted); }
.small { font-size: 0.88rem; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 24px;
  margin-bottom: 18px;
}

.card-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
@media (max-width: 560px) {
  .card-grid { grid-template-columns: 1fr; }
}

.tile {
  display: block;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  text-decoration: none;
  color: var(--ink);
  transition: border-color .15s, transform .15s;
}
.tile:hover { border-color: var(--green); transform: translateY(-2px); }
.tile h3 { margin: 0 0 6px; color: var(--green-dark); }
.tile p { margin: 0; color: var(--muted); font-size: 0.92rem; }

label { display: block; font-weight: 600; margin: 16px 0 6px; }
input, textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: 10px;
  font: inherit;
  background: #fff;
  color: var(--ink);
}
input:focus, textarea:focus { outline: 2px solid var(--green-light); border-color: var(--green); }
textarea { min-height: 140px; resize: vertical; }

.btn {
  display: inline-block;
  background: var(--green);
  color: #fff;
  border: none;
  border-radius: 10px;
  padding: 13px 22px;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  margin-top: 18px;
}
.btn:hover { background: var(--green-dark); }
.btn:disabled { opacity: 0.6; cursor: not-allowed; }

.alert {
  border-radius: 10px;
  padding: 12px 16px;
  margin-top: 16px;
  display: none;
}
.alert.show { display: block; }
.alert.ok { background: var(--green-light); color: var(--green-dark); border: 1px solid #bfe3cc; }
.alert.err { background: #fdecec; color: #9b2c2c; border: 1px solid #f5c2c2; }

.footer {
  border-top: 1px solid var(--border);
  background: #fff;
}
.footer-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 24px 20px;
  color: var(--muted);
  font-size: 0.86rem;
  display: flex;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
}
.footer-inner a { color: var(--muted); }

ul.tight li { margin-bottom: 6px; }
.toc a { display: inline-block; margin-right: 14px; }
hr { border: none; border-top: 1px solid var(--border); margin: 28px 0; }