/* =========================================================
   대한민국 부동산 종합정보 — 공용 스타일
   설계 컨셉: 정부 생활법령정보 사이트 톤 (신뢰감·가독성 우선)
   ========================================================= */
:root {
  --navy: #123a6b;
  --navy-dark: #0d2c53;
  --blue: #1f6fd1;
  --blue-soft: #eaf2fb;
  --accent: #0e8a6b;
  --warn: #c0392b;
  --warn-soft: #fdecec;
  --ink: #1f2933;
  --muted: #5b6b7b;
  --line: #e2e8f0;
  --bg: #f5f7fa;
  --card: #ffffff;
  --radius: 12px;
  --shadow: 0 2px 10px rgba(18, 58, 107, 0.07);
  --maxw: 1080px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "Pretendard", "Malgun Gothic", "Apple SD Gothic Neo",
    system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  line-height: 1.75;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  word-break: keep-all;
}

a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---------- 헤더 / 내비게이션 ---------- */
.site-header {
  background: var(--navy);
  background: linear-gradient(120deg, var(--navy) 0%, var(--navy-dark) 100%);
  color: #fff;
  position: sticky;
  top: 0;
  z-index: 50;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.12);
}
.nav-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 18px;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px 18px;
  min-height: 60px;
}
.brand {
  color: #fff;
  font-weight: 800;
  font-size: 1.12rem;
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: 8px;
  margin-right: auto;
}
.brand:hover { text-decoration: none; opacity: 0.92; }
.brand .tag {
  font-size: 0.62rem;
  background: rgba(255, 255, 255, 0.18);
  padding: 2px 7px;
  border-radius: 20px;
  font-weight: 600;
}
.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 2px 4px;
}
.site-nav a {
  color: #dbe6f4;
  padding: 8px 11px;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 600;
}
.site-nav a:hover { background: rgba(255, 255, 255, 0.12); color: #fff; text-decoration: none; }
.site-nav a.active { background: rgba(255, 255, 255, 0.2); color: #fff; }

/* ---------- 히어로 ---------- */
.hero {
  background: linear-gradient(120deg, #123a6b 0%, #1f6fd1 100%);
  color: #fff;
  padding: 54px 18px 60px;
  text-align: center;
}
.hero h1 { font-size: 2.1rem; margin: 0 0 12px; letter-spacing: -0.03em; line-height: 1.3; }
.hero p { font-size: 1.06rem; max-width: 720px; margin: 0 auto; color: #e6eefa; }
.hero .updated { display: inline-block; margin-top: 18px; font-size: 0.82rem; background: rgba(255,255,255,.15); padding: 5px 14px; border-radius: 20px; }

/* ---------- 레이아웃 컨테이너 ---------- */
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 18px; }
main { padding: 40px 0 20px; }

.page-head { border-bottom: 3px solid var(--navy); padding-bottom: 14px; margin-bottom: 8px; }
.page-head h1 { font-size: 1.72rem; margin: 0 0 6px; color: var(--navy); letter-spacing: -0.02em; }
.page-head p.lead { color: var(--muted); margin: 0; font-size: 1.02rem; }
.breadcrumb { font-size: 0.82rem; color: var(--muted); margin: 26px 0 4px; }
.breadcrumb a { color: var(--muted); }

/* ---------- 카드 그리드 (홈) ---------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 18px;
  margin: 30px 0;
}
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px 20px;
  box-shadow: var(--shadow);
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s;
  display: block;
  color: var(--ink);
}
.card:hover { transform: translateY(-3px); box-shadow: 0 8px 20px rgba(18,58,107,.14); border-color: var(--blue); text-decoration: none; }
.card .ico { font-size: 1.8rem; }
.card h3 { margin: 10px 0 6px; color: var(--navy); font-size: 1.12rem; }
.card p { margin: 0; color: var(--muted); font-size: 0.9rem; }

/* ---------- 본문 요소 ---------- */
.section { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 26px; margin: 22px 0; box-shadow: var(--shadow); }
.section > h2:first-child, .section > h2 { margin-top: 0; }
h2 { color: var(--navy); font-size: 1.34rem; margin: 32px 0 12px; letter-spacing: -0.02em; border-left: 5px solid var(--blue); padding-left: 12px; }
h3 { color: var(--navy-dark); font-size: 1.1rem; margin: 22px 0 8px; }
p { margin: 10px 0; }
ul, ol { padding-left: 22px; }
li { margin: 6px 0; }
strong { color: var(--navy-dark); }

/* 표 */
.table-scroll { overflow-x: auto; margin: 16px 0; }
table { border-collapse: collapse; width: 100%; min-width: 460px; font-size: 0.92rem; }
th, td { border: 1px solid var(--line); padding: 10px 12px; text-align: left; vertical-align: top; }
thead th { background: var(--blue-soft); color: var(--navy); font-weight: 700; }
tbody tr:nth-child(even) { background: #fafbfc; }

/* 콜아웃 박스 */
.callout { border-radius: 10px; padding: 16px 18px; margin: 18px 0; border: 1px solid; }
.callout .t { font-weight: 700; display: block; margin-bottom: 4px; }
.callout.tip { background: var(--blue-soft); border-color: #bcd6f2; }
.callout.tip .t { color: var(--blue); }
.callout.warn { background: var(--warn-soft); border-color: #f3c2bd; }
.callout.warn .t { color: var(--warn); }
.callout.law { background: #f2f7f4; border-color: #c6e2d5; }
.callout.law .t { color: var(--accent); }

/* 단계(step) */
.steps { counter-reset: step; list-style: none; padding: 0; }
.steps li { position: relative; padding: 14px 16px 14px 56px; margin: 12px 0; background: #fafbfc; border: 1px solid var(--line); border-radius: 10px; }
.steps li::before {
  counter-increment: step; content: counter(step);
  position: absolute; left: 14px; top: 14px;
  width: 30px; height: 30px; border-radius: 50%;
  background: var(--blue); color: #fff; font-weight: 700;
  display: flex; align-items: center; justify-content: center; font-size: 0.95rem;
}
.steps li strong { display: block; }

/* 배지 / 태그 */
.pill { display: inline-block; font-size: 0.78rem; font-weight: 600; padding: 2px 10px; border-radius: 20px; background: var(--blue-soft); color: var(--blue); margin: 2px 4px 2px 0; }

/* 목차(TOC) */
.toc { background: #f8fafc; border: 1px solid var(--line); border-radius: 10px; padding: 16px 20px; margin: 22px 0; }
.toc strong { display: block; color: var(--navy); margin-bottom: 8px; }
.toc ul { columns: 2; column-gap: 30px; margin: 0; }
@media (max-width: 640px){ .toc ul { columns: 1; } }

/* FAQ */
details.faq { background: var(--card); border: 1px solid var(--line); border-radius: 10px; margin: 10px 0; padding: 4px 18px; }
details.faq summary { cursor: pointer; font-weight: 700; color: var(--navy-dark); padding: 12px 0; list-style: none; }
details.faq summary::-webkit-details-marker { display: none; }
details.faq summary::before { content: "Q "; color: var(--blue); font-weight: 800; }
details.faq[open] summary { border-bottom: 1px dashed var(--line); }
details.faq .a { padding: 12px 0; color: var(--ink); }

/* 출처 링크 목록 */
.source-list { list-style: none; padding: 0; }
.source-list li { border: 1px solid var(--line); border-radius: 10px; padding: 12px 16px; margin: 8px 0; background: var(--card); }
.source-list a { font-weight: 700; }
.source-list .desc { display: block; color: var(--muted); font-size: 0.88rem; margin-top: 2px; }

/* 면책 고지 */
.disclaimer { background: #fffdf5; border: 1px solid #f0e2b6; border-radius: 10px; padding: 14px 18px; font-size: 0.86rem; color: #6b5d2f; margin: 26px 0; }

/* ---------- 푸터 ---------- */
.site-footer { background: var(--navy-dark); color: #c4d2e4; margin-top: 50px; padding: 34px 18px; font-size: 0.88rem; }
.footer-inner { max-width: var(--maxw); margin: 0 auto; }
.footer-inner h4 { color: #fff; margin: 0 0 10px; font-size: 0.98rem; }
.site-footer a { color: #9fc0ea; }
.footer-links { display: flex; flex-wrap: wrap; gap: 8px 18px; margin: 8px 0 18px; }
.footer-note { border-top: 1px solid rgba(255,255,255,.12); padding-top: 16px; color: #8ea3bd; line-height: 1.7; }

/* 반응형 */
@media (max-width: 720px){
  .hero h1 { font-size: 1.6rem; }
  .section { padding: 20px 18px; }
  h2 { font-size: 1.18rem; }
  .brand .tag { display: none; }
}

/* ===== 접근성 도구 (a11y.js) ===== */
#a11y-fab{ position:fixed; right:16px; bottom:16px; z-index:9998; display:flex; align-items:center; gap:6px;
  background:#0e8a6b; color:#fff; border:2px solid #fff; border-radius:999px; padding:10px 14px;
  font-size:15px; font-weight:800; cursor:pointer; box-shadow:0 4px 14px rgba(0,0,0,.28); }
#a11y-fab:hover{ background:#0b7458; }
#a11y-fab .a11y-fab-t{ font-size:14px; }
#a11y-panel{ position:fixed; right:16px; bottom:70px; z-index:9999; width:290px; max-width:calc(100vw - 32px);
  background:#fff; color:#1c2733; border:1px solid #d5dee7; border-radius:14px; box-shadow:0 10px 34px rgba(20,40,70,.22);
  padding:12px 14px 14px; font-size:15px; }
#a11y-panel .a11y-hd{ font-weight:800; font-size:16px; display:flex; justify-content:space-between; align-items:center;
  padding-bottom:8px; border-bottom:1px solid #eef2f6; margin-bottom:10px; }
#a11y-panel #a11y-x{ background:none; border:none; font-size:18px; cursor:pointer; color:#6b7887; line-height:1; }
#a11y-panel .a11y-row{ margin:10px 0; }
#a11y-panel .a11y-lab{ font-size:13px; color:#5b6b7b; font-weight:700; display:block; margin-bottom:6px; }
#a11y-panel .a11y-zoom{ display:flex; align-items:center; gap:8px; }
#a11y-panel .a11y-zoom button{ width:44px; height:44px; border:1px solid #cfd9e3; background:#f6f9fc; border-radius:10px;
  font-size:22px; font-weight:800; cursor:pointer; color:#1c2733; }
#a11y-panel .a11y-zoom .a11y-mini{ width:auto; padding:0 12px; font-size:14px; }
#a11y-panel #a11y-zoom-val{ min-width:52px; text-align:center; font-weight:800; font-size:16px; }
#a11y-panel .a11y-big{ width:100%; padding:13px; border:1px solid #cfd9e3; background:#f6f9fc; border-radius:10px;
  font-size:16px; font-weight:800; cursor:pointer; color:#1c2733; }
#a11y-panel .a11y-big.on{ background:#0e8a6b; color:#fff; border-color:#0e8a6b; }
#a11y-panel .a11y-hint{ font-size:12px; color:#6b7887; margin-top:6px; line-height:1.5; }
@media(max-width:600px){ #a11y-fab .a11y-fab-t{ display:inline; } }

/* 고대비 모드 */
html.a11y-contrast{ filter: contrast(1.15); }
html.a11y-contrast body{ background:#000 !important; color:#fff !important; }
html.a11y-contrast a{ color:#7fd4ff !important; }
html.a11y-contrast .section, html.a11y-contrast .card, html.a11y-contrast .lcard,
html.a11y-contrast .filters, html.a11y-contrast .ap-card{ background:#111 !important; border-color:#555 !important; color:#fff !important; }
html.a11y-contrast .site-header{ background:#000 !important; border-color:#555 !important; }
html.a11y-contrast #a11y-panel, html.a11y-contrast #a11y-panel *{ background-color:#fff; color:#1c2733; }
html.a11y-contrast #a11y-panel .a11y-big.on{ background:#0e8a6b; color:#fff; }

.nav-badge{ font-size:.6rem; font-weight:800; background:#fdecec; color:#d63031; padding:1px 6px; border-radius:10px; vertical-align:middle; margin-left:1px; white-space:nowrap; }