:root {
  color-scheme: light;
  --bg: #f4f7fb;
  --panel: #ffffff;
  --text: #172033;
  --muted: #5f6b7a;
  --line: #dfe6ee;
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --soft: #edf4ff;
  --danger: #b42318;
  --radius: 12px;
}

* { box-sizing: border-box; }
html { min-width: 320px; scroll-behavior: smooth; }
body {
  margin: 0;
  background: linear-gradient(180deg, #edf4ff 0, var(--bg) 320px);
  color: var(--text);
  font-family: Pretendard, -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans KR", sans-serif;
  font-size: 16px;
  line-height: 1.7;
}
a { color: var(--primary); }
a:hover { color: var(--primary-dark); }
.site-header {
  border-bottom: 1px solid rgba(37, 99, 235, .14);
  background: rgba(255, 255, 255, .9);
  backdrop-filter: blur(14px);
}
.site-header-inner,
.page,
.site-footer-inner {
  width: min(880px, calc(100% - 32px));
  margin: 0 auto;
}
.site-header-inner {
  min-height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.brand { color: var(--text); font-weight: 800; text-decoration: none; }
.nav { display: flex; flex-wrap: wrap; gap: 14px; font-size: 14px; }
.page { padding: 64px 0 80px; }
.eyebrow {
  display: block;
  margin-bottom: 8px;
  color: var(--primary);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: .08em;
}
h1 { margin: 0 0 12px; font-size: clamp(32px, 6vw, 48px); line-height: 1.15; letter-spacing: -.04em; }
.lead { margin: 0 0 32px; color: var(--muted); font-size: 18px; }
.updated { display: inline-block; margin-bottom: 28px; padding: 6px 10px; border-radius: 999px; background: var(--soft); color: #174ea6; font-size: 13px; font-weight: 700; }
.card {
  margin: 18px 0;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  box-shadow: 0 12px 32px rgba(20, 42, 75, .06);
}
h2 { margin: 42px 0 12px; font-size: 23px; letter-spacing: -.02em; }
h3 { margin: 24px 0 8px; font-size: 18px; }
p { margin: 8px 0; }
ul, ol { padding-left: 22px; }
li + li { margin-top: 6px; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { padding: 12px; border: 1px solid var(--line); text-align: left; vertical-align: top; }
th { background: #f8fafc; }
.table-wrap { overflow-x: auto; }
.notice { padding: 16px; border-left: 4px solid var(--primary); background: var(--soft); }
.danger-notice { border-left-color: var(--danger); background: #fff2f0; }
label { display: block; margin: 16px 0 6px; font-weight: 700; }
input {
  width: 100%;
  min-height: 46px;
  padding: 10px 12px;
  border: 1px solid #cbd5e1;
  border-radius: 8px;
  background: #fff;
  color: var(--text);
  font: inherit;
}
button, .button {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  margin-top: 18px;
  padding: 0 18px;
  border: 0;
  border-radius: 8px;
  background: var(--primary);
  color: #fff;
  font: inherit;
  font-weight: 800;
  text-decoration: none;
  cursor: pointer;
}
button:hover, .button:hover { background: var(--primary-dark); color: #fff; }
button:disabled { opacity: .55; cursor: wait; }
.form-status { margin-top: 14px; font-weight: 700; }
.site-footer { padding: 28px 0; border-top: 1px solid var(--line); background: #fff; color: var(--muted); font-size: 14px; }
.site-footer-inner { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; }
@media (max-width: 620px) {
  .site-header-inner { padding: 12px 0; align-items: flex-start; flex-direction: column; }
  .page { padding-top: 42px; }
  .card { padding: 18px; }
}