:root {
  --bg: #f7f9f7;
  --card: #ffffff;
  --text: #1c2420;
  --muted: #66776a;
  --line: #e4ebe5;
  --brand: #1f6b4a;
  --brand-soft: #e8f3ed;
  --accent: #c45c3e;
  --shadow: 0 10px 30px rgba(28, 36, 32, 0.06);
  --radius: 18px;
  --max: 720px;
  color-scheme: light;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  line-height: 1.65;
}

a {
  color: var(--brand);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.wrap {
  width: min(100% - 32px, var(--max));
  margin: 0 auto;
  padding: 28px 0 64px;
}

.topnav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 28px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: inherit;
  text-decoration: none;
  font-weight: 700;
}

.brand img {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: var(--brand-soft);
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  font-size: 14px;
}

.hero,
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.hero {
  padding: 36px 28px;
  margin-bottom: 18px;
}

.kicker {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--brand-soft);
  color: var(--brand);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.hero h1 {
  margin: 14px 0 8px;
  font-size: clamp(28px, 5vw, 36px);
  line-height: 1.2;
}

.lead {
  margin: 0;
  color: var(--muted);
  font-size: 16px;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border-radius: 12px;
  border: 1px solid transparent;
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
}

.btn-primary {
  background: var(--brand);
  color: #fff;
}

.btn-primary:hover {
  text-decoration: none;
  filter: brightness(1.05);
}

.btn-secondary {
  background: #fff;
  color: var(--text);
  border-color: var(--line);
}

.btn-secondary:hover {
  text-decoration: none;
  background: var(--brand-soft);
}

.grid {
  display: grid;
  gap: 14px;
}

@media (min-width: 640px) {
  .grid.two {
    grid-template-columns: 1fr 1fr;
  }
}

.card {
  padding: 22px 22px 18px;
}

.card h2 {
  margin: 0 0 10px;
  font-size: 18px;
}

.card p,
.card li {
  color: var(--muted);
  font-size: 15px;
}

.card ul {
  margin: 0;
  padding-left: 1.15em;
}

.card li + li {
  margin-top: 6px;
}

.meta {
  margin-top: 18px;
  color: var(--muted);
  font-size: 13px;
}

.footer {
  margin-top: 28px;
  color: var(--muted);
  font-size: 13px;
}

.legal h1 {
  margin: 0 0 8px;
  font-size: 28px;
}

.legal .updated {
  color: var(--muted);
  font-size: 13px;
  margin-bottom: 22px;
}

.legal h2 {
  margin: 28px 0 10px;
  font-size: 18px;
}

.legal p,
.legal li {
  color: var(--muted);
}

.legal .note {
  padding: 14px 16px;
  background: #fff8e8;
  border: 1px solid #f0e0b8;
  border-radius: 12px;
  color: #6a5a28;
  font-size: 14px;
}

.mono {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.92em;
}