:root {
  --ink: #12202b;
  --muted: #51606b;
  --line: #dde4e8;
  --bg: #ffffff;
  --bg-alt: #f3f7f6;
  --brand: #0f6b5c;
  --brand-dark: #0a4d42;
  --accent: #e8f3f0;
  --todo: #b45309;
  --radius: 12px;
  --max: 1080px;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Malgun Gothic", "Noto Sans KR", sans-serif;
  font-size: 16px;
  line-height: 1.7;
  word-break: keep-all;
  overflow-wrap: anywhere;
}

a { color: var(--brand); }
img { max-width: 100%; height: auto; }

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 16px; }

/* 헤더 */
.site-header { border-bottom: 1px solid var(--line); background: var(--bg); }
.site-header .wrap {
  display: flex; flex-wrap: wrap; align-items: center;
  justify-content: space-between; gap: 8px 24px; padding-top: 14px; padding-bottom: 14px;
}
.brand { color: var(--ink); text-decoration: none; font-weight: 800; font-size: 20px; letter-spacing: -0.01em; }
.brand span { color: var(--muted); font-weight: 600; font-size: 15px; margin-left: 6px; }
.site-nav ul { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 4px 18px; }
.site-nav a { color: var(--ink); text-decoration: none; font-weight: 600; font-size: 15px; padding: 4px 0; }
.site-nav a:hover, .site-nav a[aria-current="page"] { color: var(--brand); box-shadow: inset 0 -2px 0 var(--brand); }

/* 히어로 */
.hero { background: linear-gradient(160deg, var(--accent), var(--bg) 70%); padding: 72px 0 64px; }
.eyebrow { color: var(--brand); font-weight: 700; font-size: 14px; letter-spacing: 0.04em; margin: 0 0 8px; }
.hero h1, .page-title h1 { font-size: clamp(28px, 5vw, 44px); line-height: 1.3; letter-spacing: -0.02em; margin: 0 0 16px; }
.lead { color: var(--muted); font-size: clamp(16px, 2.2vw, 19px); max-width: 720px; margin: 0 0 28px; }

.btn {
  display: inline-block; background: var(--brand); color: #fff; text-decoration: none;
  font-weight: 700; padding: 12px 22px; border-radius: 999px; margin: 0 8px 8px 0;
}
.btn:hover { background: var(--brand-dark); }
.btn-ghost { background: transparent; color: var(--brand); box-shadow: inset 0 0 0 2px var(--brand); }
.btn-ghost:hover { background: var(--accent); }

/* 섹션 */
.page-title { background: var(--bg-alt); padding: 48px 0 36px; border-bottom: 1px solid var(--line); }
.section { padding: 56px 0; }
.section-alt { background: var(--bg-alt); }
.section h2 { font-size: clamp(22px, 3.4vw, 30px); letter-spacing: -0.01em; margin: 0 0 12px; }
.section > .wrap > p { color: var(--muted); max-width: 760px; }

.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; margin-top: 24px; }
.card { background: var(--bg); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.card h3 { margin: 0 0 8px; font-size: 18px; }
.card p { margin: 0; color: var(--muted); }
.tag {
  display: inline-block; font-size: 12px; font-weight: 700; color: var(--brand);
  background: var(--accent); border-radius: 999px; padding: 2px 10px; margin-bottom: 10px;
}

.list-check { list-style: none; padding: 0; margin: 20px 0 0; display: grid; gap: 14px; }
.list-check li { padding-left: 30px; position: relative; }
.list-check li::before {
  content: ""; position: absolute; left: 0; top: 7px; width: 18px; height: 18px;
  border-radius: 50%; background: var(--brand);
  -webkit-mask: radial-gradient(circle, transparent 3px, #000 4px); mask: radial-gradient(circle, transparent 3px, #000 4px);
}
.list-check strong { display: block; }
.list-check span { color: var(--muted); }

.cta { text-align: center; }
.cta p { margin-left: auto; margin-right: auto; }

dl.info { display: grid; grid-template-columns: max-content 1fr; gap: 10px 20px; margin: 20px 0 0; }
dl.info dt { font-weight: 700; }
dl.info dd { margin: 0; }

.todo { color: var(--todo); font-weight: 700; }

/* 푸터 */
.site-footer { border-top: 1px solid var(--line); padding: 28px 0 40px; color: var(--muted); font-size: 14px; }
.site-footer p { margin: 2px 0; }
.site-footer strong { color: var(--ink); }

@media (max-width: 480px) {
  .hero { padding: 48px 0 40px; }
  .section { padding: 40px 0; }
  dl.info { grid-template-columns: 1fr; gap: 2px; }
  dl.info dd { margin-bottom: 10px; }
}