:root {
  --bg: #f7ecff;
  --card: #ffffff;
  --ink: #3a1d5c;
  --ink-soft: #7a5a93;
  --accent: #ff4fd8;
  --accent-deep: #9b4dff;
  --edge: #e7d8f7;
  --radius: 18px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #241633;
    --card: #31234a;
    --ink: #f7ecff;
    --ink-soft: #c7a9e0;
    --accent: #ff6fe0;
    --accent-deep: #b477ff;
    --edge: #3d2b5c;
  }
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Sans",
    "Noto Sans KR", "Noto Sans JP", "Noto Sans SC", "Apple SD Gothic Neo",
    Roboto, sans-serif;
  line-height: 1.7;
  font-size: 16px;
}

.wrap {
  max-width: 720px;
  margin: 0 auto;
  padding: 24px 20px 64px;
}

header.top {
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(1.2) blur(8px);
  -webkit-backdrop-filter: saturate(1.2) blur(8px);
  border-bottom: 1px solid var(--edge);
}

.brand {
  max-width: 720px;
  margin: 0 auto;
  padding: 14px 20px 10px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.brand .logo {
  font-weight: 800;
  font-size: 18px;
  background: linear-gradient(90deg, var(--accent), var(--accent-deep));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  letter-spacing: 0.5px;
}

.langbar { display: flex; gap: 6px; }

.langbtn {
  border: 1.5px solid var(--edge);
  background: var(--card);
  color: var(--ink-soft);
  border-radius: 999px;
  padding: 5px 12px;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.15s ease;
}
.langbtn[aria-current="true"] {
  color: #fff;
  background: linear-gradient(180deg, var(--accent), var(--accent-deep));
  border-color: transparent;
}

h1 {
  font-size: 26px;
  margin: 8px 0 4px;
  letter-spacing: -0.3px;
}

.eff {
  color: var(--ink-soft);
  font-size: 13.5px;
  margin: 0 0 20px;
}

h2 {
  font-size: 18px;
  margin: 28px 0 8px;
  padding-top: 8px;
}

p, li { color: var(--ink); }

a { color: var(--accent-deep); font-weight: 600; word-break: break-word; }

ul { padding-left: 20px; }
li { margin: 4px 0; }

.card {
  background: var(--card);
  border: 1.5px solid var(--edge);
  border-radius: var(--radius);
  padding: 14px 18px;
  margin: 14px 0;
}

.muted { color: var(--ink-soft); font-size: 14px; }

.doclinks {
  display: grid;
  gap: 12px;
  margin-top: 20px;
}
.doclinks a {
  display: block;
  background: var(--card);
  border: 1.5px solid var(--edge);
  border-radius: var(--radius);
  padding: 16px 18px;
  text-decoration: none;
  color: var(--ink);
  font-weight: 700;
}
.doclinks a span { display: block; color: var(--ink-soft); font-weight: 500; font-size: 13.5px; margin-top: 2px; }

footer {
  margin-top: 40px;
  padding-top: 16px;
  border-top: 1px solid var(--edge);
  color: var(--ink-soft);
  font-size: 13px;
}

[data-lang][hidden] { display: none; }