:root {
  --bg: #FAFBFC;
  --card: #ffffff;
  --line: rgba(0, 0, 0, 0.07);
  --line-strong: rgba(0, 0, 0, 0.11);
  --ink: #14181C;
  --ink-2: #5B6169;
  --muted: #8B909C;
  --faint: #B4B8BE;
  --brand: #2071A8;
  --brand-hover: #185d8c;
  --brand-bg: #E7F0F7;
  --brand-line: #C7DBEA;
  --kakao: #FEE500;
  --kakao-ink: #191919;
  --shadow: 0 10px 32px rgba(20, 24, 28, 0.07);
  --mono: "IBM Plex Mono", ui-monospace, Menlo, monospace;
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--ink);
  font-family: "IBM Plex Sans KR", "Apple SD Gothic Neo", sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }
img { max-width: 100%; display: block; }
.topbar {
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  background: rgba(255,255,255,.94);
  border-bottom: 1px solid rgba(0,0,0,.08);
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(12px);
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; }
.brand-mark {
  width: 30px; height: 30px; border-radius: 10px;
  display: grid; place-items: center;
  background: var(--brand); color: #fff; font-family: var(--mono); font-size: 13px;
}
.wrap { max-width: 760px; margin: 0 auto; padding: 0 18px 72px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 18px; box-shadow: var(--shadow); }
.footer { padding: 24px 20px 40px; text-align: center; color: var(--faint); font-size: 11px; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
@media (min-width: 820px) {
  .topbar { padding: 0 28px; }
  .wrap { padding-left: 24px; padding-right: 24px; }
}