:root {
  --bg: #eef7e8;
  --card: #ffffff;
  --text: #2d3a2e;
  --sub: #5f6f60;
  --accent: #4caf50;
  --accent-dark: #2e7d32;
  --line: #d6e2d2;
  --soft: #fff4e5;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1b221c;
    --card: #243026;
    --text: #e6efe4;
    --sub: #a9b8a8;
    --accent: #7cc36a;
    --accent-dark: #a5dc8f;
    --line: #37453a;
    --soft: #2f2a20;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Malgun Gothic", "Noto Sans KR", "Segoe UI", Roboto, sans-serif;
  line-height: 1.7;
  word-break: keep-all;
  overflow-wrap: anywhere;
}
a { color: var(--accent-dark); }

.top {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  max-width: 880px; margin: 0 auto; padding: 16px;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 1.1rem; color: var(--text); text-decoration: none; }
.brand img { border-radius: 8px; }
.top nav { font-size: .95rem; }

.foot { max-width: 880px; margin: 40px auto 0; padding: 24px 16px 40px; color: var(--sub); font-size: .9rem; text-align: center; }

/* 소개 페이지 */
.landing { max-width: 880px; margin: 0 auto; padding: 0 16px; }
.hero { text-align: center; padding: 32px 0 24px; }
.hero-icon { border-radius: 32px; box-shadow: 0 8px 24px rgba(0,0,0,.12); }
.hero h1 { font-size: clamp(2rem, 7vw, 3rem); margin: 20px 0 4px; }
.lead { font-size: 1.2rem; color: var(--sub); margin: 0 0 16px; }
.badge { display: inline-block; background: var(--card); border: 1px solid var(--line); border-radius: 999px; padding: 6px 16px; font-size: .9rem; color: var(--sub); }
.features { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; margin: 24px 0; }
.features article, .parents { background: var(--card); border: 1px solid var(--line); border-radius: 20px; padding: 20px; }
.features h2 { font-size: 1.1rem; margin: 0 0 6px; color: var(--accent-dark); }
.features p { margin: 0; color: var(--sub); }
.parents { background: var(--soft); }
.parents h2 { margin-top: 0; font-size: 1.15rem; }

/* 방침 문서 */
.doc { max-width: 760px; margin: 0 auto; padding: 8px 16px; }
.doc section { background: var(--card); border: 1px solid var(--line); border-radius: 20px; padding: 24px 20px; }
.doc h1 { font-size: 1.8rem; margin: 0 0 4px; }
.doc h2 { font-size: 1.15rem; margin: 28px 0 8px; }
.doc .meta { color: var(--sub); font-size: .92rem; margin: 0 0 16px; }
.doc ul { padding-left: 1.3em; }
.doc li { margin: 4px 0; }
.doc hr { border: 0; margin: 32px 0; }
.summary { background: var(--soft); border-radius: 14px; padding: 4px 16px 8px; }
.summary h2 { margin-top: 12px; }