/* DayGrid 안내 페이지. 바깥 글꼴이나 스크립트를 불러오지 않는다(개인정보 처리방침 페이지가 추적 요청을 만들지 않게). */
:root {
  --bg: #f6f7fb;
  --card: #ffffff;
  --text: #1c1d22;
  --muted: #5d6170;
  --line: #e3e6ef;
  --accent: #4b67e8;
  --accent-soft: #e9eeff;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1117;
    --card: #181b24;
    --text: #eceef4;
    --muted: #a3a8b8;
    --line: #2a2f3c;
    --accent: #8ea2ff;
    --accent-soft: #1f2740;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Pretendard", "Noto Sans KR", "Malgun Gothic", sans-serif;
  line-height: 1.7;
  word-break: keep-all;
  overflow-wrap: anywhere;
}

main {
  max-width: 760px;
  margin: 0 auto;
  padding: 32px 16px 64px;
}

header.app {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
}

header.app img {
  width: 72px;
  height: 72px;
  border-radius: 16px;
  box-shadow: 0 4px 16px rgba(40, 60, 160, 0.25);
}

header.app h1 { margin: 0; font-size: 1.6rem; line-height: 1.3; }
header.app p { margin: 2px 0 0; color: var(--muted); }

nav { margin: 0 0 24px; display: flex; flex-wrap: wrap; gap: 8px; }
nav a {
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
}
nav a[aria-current="page"] { background: var(--accent); color: #fff; }

h2 { font-size: 1.25rem; margin: 36px 0 8px; }
h3 { font-size: 1.05rem; margin: 20px 0 4px; }
p, li { color: var(--text); }
.muted { color: var(--muted); }
a { color: var(--accent); }

section.card, details {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 16px 18px;
  margin: 12px 0;
}

section.card > :first-child { margin-top: 0; }
section.card > :last-child, details > :last-child { margin-bottom: 0; }

details summary { cursor: pointer; font-weight: 600; }
details[open] summary { margin-bottom: 8px; }

.features { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 12px; }
.features section.card { margin: 0; }
.features h3 { margin-top: 0; }

ol, ul { padding-left: 1.3em; }
footer { margin-top: 48px; color: var(--muted); font-size: 0.9rem; }