:root {
  --bg: #F7FAF9;
  --surface: #FFFFFF;
  --text: #13201F;
  --muted: #4E5F5D;
  --line: #DCE6E4;
  --brand: #0F6A62;
  --brand-ink: #FFFFFF;
  --accent: #B86E00;
  --soft: #E6F2F0;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0C1413;
    --surface: #14201F;
    --text: #E6EFEE;
    --muted: #A3B4B2;
    --line: #253534;
    --brand: #5CC7B9;
    --brand-ink: #0C1413;
    --accent: #FFB547;
    --soft: #172927;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Apple SD Gothic Neo", "Noto Sans KR", sans-serif;
  overflow-wrap: anywhere;
}
html:lang(ko) body { word-break: keep-all; overflow-wrap: break-word; }
a { color: var(--brand); }
.wrap { max-width: 880px; margin: 0 auto; padding: 0 16px; }
header.top { border-bottom: 1px solid var(--line); background: var(--surface); }
header.top .wrap { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding-top: 12px; padding-bottom: 12px; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--text); font-weight: 700; font-size: 20px; }
.brand img { width: 36px; height: 36px; }
nav a { margin-left: 16px; text-decoration: none; color: var(--muted); font-size: 15px; }
nav a:first-child { margin-left: 0; }
nav a[aria-current="page"] { color: var(--brand); font-weight: 600; }
nav .lang { margin-left: 16px; padding-left: 16px; border-left: 1px solid var(--line); color: var(--muted); font-size: 15px; white-space: nowrap; }
nav .lang a { margin-left: 0; }
nav .lang a[aria-current] { color: var(--text); font-weight: 600; }
.hero { padding: 56px 0 32px; text-align: center; }
.hero img { width: 112px; height: 112px; }
.hero h1 { font-size: clamp(30px, 6vw, 44px); line-height: 1.15; margin: 20px 0 12px; letter-spacing: -0.5px; }
.hero p.lead { font-size: 19px; color: var(--muted); max-width: 640px; margin: 0 auto; }
.badge { display: inline-block; margin-top: 24px; padding: 10px 18px; border-radius: 999px; background: var(--brand); color: var(--brand-ink); font-weight: 600; }
section { padding: 28px 0; }
h2 { font-size: 26px; line-height: 1.25; margin: 0 0 14px; }
h3 { font-size: 18px; margin: 0 0 6px; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 14px; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 18px; }
.card p { margin: 0; color: var(--muted); font-size: 16px; }
ul.checks { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
ul.checks li { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 12px 14px 12px 44px; position: relative; }
ul.checks li::before { content: ""; position: absolute; left: 16px; top: 18px; width: 14px; height: 8px; border-left: 3px solid var(--brand); border-bottom: 3px solid var(--brand); transform: rotate(-45deg); }
.note { background: var(--soft); border-radius: 14px; padding: 18px; }
article { padding: 32px 0 48px; }
article h1 { font-size: clamp(28px, 5vw, 36px); line-height: 1.2; margin: 0 0 6px; }
article h2 { margin-top: 32px; }
.meta { color: var(--muted); font-size: 15px; margin: 0 0 20px; }
.todo { border-left: 4px solid var(--accent); padding: 8px 12px; background: var(--soft); }
footer { border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; padding: 24px 0 40px; }
footer a { color: var(--muted); }
kbd { font: inherit; font-size: 0.9em; border: 1px solid var(--line); border-bottom-width: 2px; border-radius: 6px; padding: 0 6px; background: var(--surface); }
.muted { color: var(--muted); font-size: 15px; }