:root {
  color-scheme: light;
  --bg: #f5f4ef;
  --paper: #ffffff;
  --ink: #1a1a1a;
  --muted: #5f5f5f;
  --line: #202020;
  --accent: #ff5a14;
  --accent-soft: #ffe7db;
  --ok: #107c41;
  --warn: #b54708;
}
* {
  box-sizing: border-box;
}
html, body {
  margin: 0;
  padding: 0;
}
body {
  font-family: "Noto Sans KR", "Apple SD Gothic Neo", "Malgun Gothic", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 0 0, #fff8f5 0, #fff8f5 280px, transparent 281px),
    radial-gradient(circle at 100% 0, #eef8ff 0, #eef8ff 250px, transparent 251px),
    var(--bg);
  line-height: 1.72;
}
a {
  color: #0a58ca;
  text-underline-offset: 3px;
}
a:hover {
  color: #003d99;
}
.container {
  max-width: 940px;
  margin: 0 auto;
  padding: 20px;
}
.site-header {
  border: 2px solid var(--line);
  background: var(--paper);
  border-radius: 16px;
  padding: 16px;
  box-shadow: 5px 5px 0 #111;
  margin-bottom: 16px;
}
.brand {
  display: flex;
  gap: 14px;
  align-items: center;
  margin-bottom: 12px;
}
.brand-badge {
  width: 42px;
  height: 42px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  background: var(--ink);
  color: #fff;
}
.brand-title {
  margin: 0;
  font-size: 24px;
  font-weight: 800;
  letter-spacing: -0.3px;
}
.brand-sub {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}
.main-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.main-nav a {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 8px 12px;
  text-decoration: none;
  color: var(--ink);
  background: #fff;
  font-size: 14px;
}
.main-nav a:hover {
  background: var(--accent-soft);
}
.card {
  border: 2px solid var(--line);
  background: var(--paper);
  border-radius: 16px;
  padding: 24px;
  box-shadow: 5px 5px 0 #111;
  margin-bottom: 16px;
}
.card h1 {
  margin: 0 0 14px;
  line-height: 1.35;
  font-size: clamp(26px, 4.2vw, 38px);
}
.card h2 {
  margin: 28px 0 12px;
  line-height: 1.4;
  font-size: clamp(20px, 3vw, 27px);
}
.card h3 {
  margin: 20px 0 8px;
  font-size: 18px;
}
.card p, .card li {
  font-size: 16px;
  margin: 0 0 12px;
  word-break: keep-all;
}
.card ul, .card ol {
  margin: 0 0 14px;
  padding-left: 22px;
}
.grid-two {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}
.panel {
  border: 1px solid #d8d8d8;
  border-radius: 12px;
  background: #fafafa;
  padding: 14px;
}
.notice {
  border-left: 5px solid var(--accent);
  background: #fff7f2;
  border-radius: 8px;
  padding: 14px;
  margin: 12px 0;
}
.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 14px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 10px 16px;
  border-radius: 10px;
  border: 2px solid var(--line);
  text-decoration: none;
  font-weight: 700;
  cursor: pointer;
}
.btn.primary {
  background: var(--ink);
  color: #fff;
}
.btn.primary:hover {
  background: #333;
}
.btn.accent {
  background: var(--accent);
  color: #fff;
}
.btn.accent:hover {
  background: #d84a0f;
}
.btn.plain {
  background: #fff;
  color: var(--ink);
}
.kv {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 8px;
  border-top: 1px solid #e6e6e6;
  padding-top: 10px;
  margin-top: 10px;
}
.kv strong {
  font-weight: 700;
}
.meta {
  color: var(--muted);
  font-size: 14px;
}
.site-footer {
  padding: 18px;
  border: 2px solid var(--line);
  border-radius: 12px;
  background: #fff;
  box-shadow: 4px 4px 0 #111;
  margin: 16px 0 24px;
}
.site-footer p {
  margin: 0;
  font-size: 13px;
  color: var(--muted);
}
.badge {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink);
  border-radius: 999px;
  font-size: 13px;
  padding: 4px 10px;
  margin-right: 6px;
}
.ok { color: var(--ok); font-weight: 700; }
.warn { color: var(--warn); font-weight: 700; }
.separator {
  height: 1px;
  background: #ececec;
  margin: 18px 0;
}
@media (max-width: 760px) {
  .container { padding: 14px; }
  .card { padding: 18px; }
  .grid-two { grid-template-columns: 1fr; }
  .kv { grid-template-columns: 1fr; gap: 2px; }
}