:root {
  --navy: #1a5276; --navy-d: #123a54; --bg: #f4f6f8; --line: #d5dbe0;
  --accent: #1a5276; --ok: #145a32;
}
* { box-sizing: border-box; }
body {
  font-family: 'Malgun Gothic', '맑은 고딕', 'Apple SD Gothic Neo', 'Noto Sans KR', sans-serif;
  margin: 0; background: var(--bg); color: #1f2d3a;
  font-size: 16px; line-height: 1.6;
}

/* ── 상단 내비게이션 (세목별 2단 구성: 그룹 → 도구) ─── */
.topnav { background: var(--navy); color: #fff; padding: 0 24px; }
.topnav .nav-top { display: flex; align-items: center; justify-content: space-between; }
.topnav .brand {
  font-size: 19px; font-weight: 800; padding: 14px 0 10px; display: flex; align-items: center; gap: 8px;
  color: #fff; text-decoration: none;
}
.topnav .brand small { font-weight: 400; opacity: .8; font-size: 13.5px; }
.topnav .nav-toggle { display: none; }

/* 1단: 세목 그룹 */
.nav-groups { display: flex; gap: 4px; flex-wrap: wrap; align-items: flex-end; }
.nav-group {
  display: inline-flex; align-items: center; gap: 6px; padding: 10px 16px 9px; border: none; cursor: pointer;
  background: transparent; color: #dbe6ef; font: inherit; font-size: 15.5px; font-weight: 700;
  border-radius: 10px 10px 0 0; border-bottom: 3px solid transparent; font-family: inherit;
}
.nav-group .ic { font-size: 16px; }
.nav-group .cnt {
  font-size: 11.5px; font-weight: 800; background: rgba(255,255,255,.18); color: #fff;
  border-radius: 999px; padding: 1px 7px; line-height: 1.5;
}
.nav-group:hover { background: rgba(255,255,255,.08); color: #fff; }
.nav-group.here { border-bottom-color: #f5b041; }             /* 현재 페이지가 속한 그룹 */
.nav-group.on { background: #fff; color: var(--gc, var(--navy)); border-bottom-color: #fff; }
.nav-group.on .cnt { background: var(--gc, var(--navy)); }

/* 2단: 그룹 안의 도구 */
.nav-tools {
  display: flex; gap: 6px; flex-wrap: wrap; align-items: center; background: #fff; color: #2c3e50;
  margin: 0 -24px; padding: 10px 24px; border-bottom: 3px solid var(--gc, var(--navy));
}
.nav-tools .nav-desc { font-size: 13.5px; color: #5f7180; margin-right: 8px; }
.nav-tools .nav-desc b { color: var(--gc, var(--navy)); margin-right: 4px; }
.nav-tool {
  display: inline-block; padding: 6px 13px; border: 1px solid var(--line); border-radius: 999px; background: #fff;
  color: #34495e; text-decoration: none; font-size: 14px; font-weight: 700; line-height: 1.4;
}
.nav-tool:hover { border-color: var(--gc, var(--navy)); color: var(--gc, var(--navy)); background: #f7fafc; }
.nav-tool.active { background: var(--gc, var(--navy)); border-color: var(--gc, var(--navy)); color: #fff; }
.nav-tool.soon { opacity: .55; cursor: default; font-weight: 400; }
.nav-tool.soon::after { content: ' (준비중)'; font-size: 12px; }

@media (max-width: 860px) {
  .topnav { padding: 0 16px; }
  .topnav .nav-toggle {
    display: inline-block; background: rgba(255,255,255,.12); color: #fff; border: 1px solid rgba(255,255,255,.3);
    border-radius: 8px; padding: 6px 12px; font: inherit; font-weight: 700; cursor: pointer; font-family: inherit;
    white-space: nowrap; flex-shrink: 0; margin-left: 8px;
  }
  .topnav .brand { font-size: 17px; }
  .topnav .nav-groups, .topnav .nav-tools { display: none; }
  .topnav.open .nav-groups { display: flex; }
  .topnav.open .nav-tools { display: flex; margin: 0 -16px; padding: 10px 16px; }
  .nav-group { padding: 8px 12px 7px; font-size: 14.5px; }
  .nav-tools .nav-desc { flex-basis: 100%; }
}

/* ── 세목별 도구 모음 (index.html 하단 허브) ───────── */
.tool-hub { display: grid; grid-template-columns: repeat(auto-fill, minmax(330px, 1fr)); gap: 14px; margin-top: 10px; }
.hub-sec {
  background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 16px 18px;
  border-top: 4px solid var(--gc, var(--navy)); box-shadow: 0 1px 4px rgba(0,0,0,.05);
}
.hub-sec h3 { margin: 0 0 10px; font-size: 17px; color: var(--gc, var(--navy)); display: flex; align-items: baseline; gap: 6px; flex-wrap: wrap; }
.hub-sec h3 .ic { font-size: 18px; }
.hub-sec h3 small { font-size: 13px; font-weight: 400; color: #6f8496; }
.hub-list { display: flex; flex-direction: column; gap: 6px; }
.hub-item {
  display: flex; flex-direction: column; gap: 1px; padding: 8px 12px; border-radius: 8px; text-decoration: none;
  color: inherit; border: 1px solid transparent; background: #f8fafc;
}
.hub-item:hover { border-color: var(--gc, var(--navy)); background: #fff; }
.hub-item b { font-size: 14.5px; color: #1a2733; }
.hub-item span { font-size: 13px; color: #5f7180; line-height: 1.5; }
.hub-item.soon { opacity: .55; }
.hub-item.soon b::after { content: ' (준비중)'; font-size: 12px; font-weight: 400; }
.section-title { font-size: 18px; font-weight: 800; color: #1a2733; margin: 32px 0 4px; }
.section-title small { font-size: 13.5px; font-weight: 400; color: #6f8496; margin-left: 8px; }

.container { max-width: 1180px; margin: 0 auto; padding: 20px 24px 40px; }
.page-intro { color: #47606f; font-size: 14.5px; margin: 2px 0 18px; line-height: 1.6; }

/* ── 계산기 탭 ─────────────────────────────────── */
.calc-tabs { display: flex; gap: 6px; margin-bottom: 16px; flex-wrap: wrap; }
.calc-tabs button {
  padding: 9px 18px; border: 1px solid var(--line); background: #fff; border-radius: 999px;
  font-size: 15px; font-weight: 700; cursor: pointer; color: #47606f; font-family: inherit;
}
.calc-tabs button.active { background: var(--navy); color: #fff; border-color: var(--navy); }

.calc-layout { display: flex; gap: 18px; align-items: flex-start; }
.panel {
  background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 20px;
  box-shadow: 0 1px 4px rgba(0,0,0,.05);
}
#formPanel { width: 380px; flex-shrink: 0; }
#resultPanel { flex: 1; min-width: 0; min-height: 360px; }

label { display: block; font-size: 14.5px; color: #3d5461; margin: 12px 0 3px; font-weight: 700; }
label:first-child { margin-top: 0; }
select, input {
  width: 100%; padding: 9px 11px; border: 1px solid var(--line); border-radius: 7px;
  font-size: 16px; font-family: inherit;
}
input:focus, select:focus { outline: 2px solid #7fb3d5; border-color: var(--navy); }
.money-hint { font-size: 13px; color: #2874a6; margin-top: 2px; min-height: 14px; }

.btn-primary {
  width: 100%; margin-top: 18px; padding: 13px; border: none; border-radius: 8px;
  background: var(--navy); color: #fff; font-size: 16.5px; font-weight: 800; cursor: pointer; font-family: inherit;
}
.btn-primary:hover { background: var(--navy-d); }

/* ── 결과 ─────────────────────────────────────── */
.result-headline {
  background: #eaf2f8; border: 1px solid #aed6f1; border-radius: 10px; padding: 16px 18px; margin-bottom: 14px;
}
.result-headline .label { font-size: 14.5px; color: #21618c; font-weight: 700; }
.result-headline .amount { font-size: 33px; font-weight: 800; color: var(--navy); margin-top: 2px; letter-spacing: -0.5px; }
.result-headline .sub { font-size: 14px; color: #566573; margin-top: 4px; }
.result-empty { color: #6f8496; text-align: center; margin-top: 130px; font-size: 15.5px; }

.steps h3, .steps h4 { color: #21618c; }
.steps ul { padding-left: 20px; }
.steps li { margin: 3px 0; font-size: 15px; line-height: 1.6; }
.steps strong { color: #0b3d5c; }
.steps p { font-size: 14.5px; }

.lawref { margin-top: 14px; font-size: 13px; color: #5f7180; border-top: 1px solid var(--line); padding-top: 10px; }
.lawref b { color: #566573; }
.disclaimer { margin-top: 16px; font-size: 13px; color: #6f8496; }

@media (max-width: 860px) {
  .calc-layout { flex-direction: column; }
  #formPanel { width: 100%; }
}

/* ── 보유세 허브 (aggr-home) ─────────────────────── */
.hub-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 14px; margin-top: 6px; }
.hub-card {
  display: block; background: #fff; border: 1px solid var(--line); border-radius: 12px;
  padding: 18px 20px; text-decoration: none; color: inherit; box-shadow: 0 1px 4px rgba(0,0,0,.05);
}
.hub-card:hover { border-color: var(--navy); box-shadow: 0 2px 8px rgba(26,82,118,.15); }
.hub-card .hc-badge { display: inline-block; font-size: 13px; font-weight: 800; color: #fff; background: var(--navy); border-radius: 999px; padding: 2px 10px; }
.hub-card.soon .hc-badge { background: #6f8496; }
.hub-card h3 { margin: 10px 0 6px; font-size: 17px; color: #1a2733; }
.hub-card p { margin: 0; font-size: 14px; color: #566573; line-height: 1.6; }
.hub-card.soon { opacity: .65; cursor: default; }
.hub-card.soon:hover { border-color: var(--line); box-shadow: 0 1px 4px rgba(0,0,0,.05); }

/* ── 종부세·재산세 고지서식 상세 (notice) ─────────── */
.notice { width: 100%; border-collapse: collapse; margin: 6px 0 10px; background: #fff; }
.notice th, .notice td { border: 1px solid var(--line); padding: 8px 12px; font-size: 15px; }
.notice th { background: #eef3f7; color: #21618c; font-weight: 700; text-align: left; }
.notice th.num, .notice td.num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
.notice tr.total td { background: #eaf2f8; font-weight: 800; color: #123a54; }
.notice tr.minus td.num { color: #943126; }
.notice .rowlabel { font-weight: 700; color: #2c3e50; }
.notice-wrap { overflow-x: auto; }

/* 산식 팝업 트리거: 누르면 계산 산식을 보여준다 */
.fx-btn {
  background: none; border: none; padding: 0; font: inherit; font-weight: 700; color: #1a5276;
  cursor: pointer; text-decoration: underline dotted; text-underline-offset: 3px; font-family: inherit;
}
.fx-btn::after { content: ' ⓘ'; font-size: 13px; color: #7fb3d5; }
.fx-btn:hover { color: var(--navy-d); }

dialog.fx-dialog {
  border: 1px solid var(--line); border-radius: 12px; padding: 0; max-width: 560px; width: calc(100vw - 48px);
  box-shadow: 0 12px 40px rgba(0,0,0,.25);
}
dialog.fx-dialog::backdrop { background: rgba(15,35,50,.45); }
.fx-head { display: flex; justify-content: space-between; align-items: center; padding: 14px 18px; background: var(--navy); color: #fff; }
.fx-head h4 { margin: 0; font-size: 15px; }
.fx-close { background: none; border: none; color: #dbe6ef; font-size: 20px; cursor: pointer; line-height: 1; padding: 2px 6px; }
.fx-close:hover { color: #fff; }
.fx-body { padding: 16px 18px 18px; font-size: 14.5px; line-height: 1.7; color: #2c3e50; }
.fx-body .fx-formula {
  background: #f4f8fb; border: 1px solid #d4e6f1; border-radius: 8px; padding: 10px 12px; margin: 8px 0;
  font-size: 14px; overflow-x: auto; white-space: pre-line;
}
.fx-body .fx-now { background: #fef9e7; border: 1px solid #f7dc6f; border-radius: 8px; padding: 10px 12px; margin: 8px 0; font-size: 14px; white-space: pre-line; }
.fx-body table { border-collapse: collapse; margin: 8px 0; width: 100%; }
.fx-body table th, .fx-body table td { border: 1px solid var(--line); padding: 4px 8px; font-size: 13.5px; }
.fx-body table th { background: #eef3f7; }
.fx-body table td.num { text-align: right; font-variant-numeric: tabular-nums; }

/* 특례 비교 박스 (공동명의) */
.compare-box { border: 1px solid var(--line); border-radius: 10px; padding: 14px 16px; margin: 14px 0; background: #fff; }
.compare-box h4 { margin: 0 0 8px; font-size: 15px; color: var(--navy); }
.compare-box .win { color: #145a32; font-weight: 800; }

/* 비과세 요건 체크 박스 (양도세 계산기 — 보유·거주요건) */
.req-box { border: 1px solid #aed6f1; border-radius: 10px; padding: 12px 16px; margin: 0 0 14px; background: #f4f9fc; }
.req-box.fail { border-color: #f5b7b1; background: #fdf2f0; }
.req-box h4 { margin: 0 0 6px; font-size: 15px; color: var(--navy); }
.req-box.fail h4 { color: #922b21; }
.req-box ul { margin: 0; padding-left: 4px; list-style: none; }
.req-box li { font-size: 14.5px; line-height: 1.7; }
.req-box li.ok b { color: #145a32; }
.req-box li.fail b { color: #b03a2e; }
.req-box li span { color: #47606f; font-size: 13.5px; margin-left: 4px; }
.req-box p { margin: 8px 0 0; font-size: 14px; color: #2c3e50; line-height: 1.6; }
.req-box p.law { font-size: 12.5px; color: #6f8496; }

/* index.html 세목 하위 메뉴 화면 (상단 세목 버튼 → index.html#hub-<키>) */
.group-view[hidden], #calcArea[hidden] { display: none; }
.group-view .group-head { border-left: 6px solid var(--gc, var(--navy)); padding: 4px 0 4px 14px; margin: 4px 0 16px; }
.group-view h1 { margin: 0; font-size: 22px; color: var(--gc, var(--navy)); display: flex; align-items: baseline; gap: 8px; flex-wrap: wrap; }
.group-view h1 small { font-size: 14px; font-weight: 400; color: #6f8496; }
.group-view .group-head p { margin: 6px 0 0; color: #5f7180; font-size: 14px; }
.group-cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 12px; }
.group-card {
  display: flex; flex-direction: column; gap: 6px; padding: 16px; background: #fff; border: 1px solid var(--line);
  border-top: 4px solid var(--gc, var(--navy)); border-radius: 10px; text-decoration: none; color: #1a2733;
}
.group-card b { font-size: 16px; color: var(--gc, var(--navy)); }
.group-card span { font-size: 13.5px; color: #5f7180; line-height: 1.5; }
.group-card em { font-style: normal; font-size: 13px; font-weight: 700; color: var(--gc, var(--navy)); margin-top: auto; }
a.group-card:hover { box-shadow: 0 3px 10px rgba(0,0,0,.08); transform: translateY(-1px); }
.group-card.soon { opacity: .55; }