/* 실버타운.kr — 기본 스타일. 모바일 우선, 본문 18px, 터치 영역 48px 이상 */
:root {
  --c-primary: #1f4e8c;      /* 짙은 남색 (흰 바탕 대비 8.3:1) */
  --c-primary-dk: #163a6a;
  --c-primary-bg: #eef3fa;
  --c-text: #1b1f24;
  --c-muted: #4b5563;        /* 대비 7.6:1 */
  --c-line: #d4dae2;
  --c-line-strong: #7b8794;  /* 입력칸 테두리 (3:1 이상) */
  --c-bg-soft: #f5f7fa;
  --c-warn: #8a4b00;
  --c-warn-bg: #fff4e0;
  --radius: 6px;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: "Pretendard", -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Malgun Gothic", "맑은 고딕", sans-serif;
  font-size: 18px;
  line-height: 1.7;
  color: var(--c-text);
  background: #fff;
  word-break: keep-all;
  overflow-wrap: break-word;
}
a { color: var(--c-primary); }
a:hover { color: var(--c-primary-dk); }
:focus-visible { outline: 3px solid #f2a900; outline-offset: 2px; }
h1, h2, h3 { line-height: 1.35; letter-spacing: -0.01em; }
h1 { font-size: 28px; margin: 8px 0 12px; }
h2 { font-size: 23px; margin: 40px 0 14px; }
h3 { font-size: 20px; margin: 24px 0 10px; }
.h-sm { font-size: 19px; margin: 0 0 12px; }
.h1-sub { font-size: 20px; font-weight: 600; color: var(--c-muted); margin-left: 4px; }
p { margin: 0 0 12px; }
.muted { color: var(--c-muted); }
.lead { font-size: 18px; color: var(--c-muted); margin-bottom: 20px; }
.wrap { max-width: 1100px; margin: 0 auto; padding: 0 16px; }
.wrap.narrow { max-width: 860px; }
main, main.wrap { padding-bottom: 48px; }
.skip { position: absolute; left: -9999px; }
.skip:focus { left: 8px; top: 8px; background: #fff; padding: 8px 12px; z-index: 10; }

/* 머리말 */
.site-header { border-bottom: 1px solid var(--c-line); background: #fff; }
.header-in { display: flex; flex-direction: column; }
.logo { display: inline-flex; align-items: center; gap: 8px; min-height: 56px; font-size: 24px; font-weight: 800; color: var(--c-primary); text-decoration: none; }
.logo b { font-weight: 800; color: var(--c-text); }
.gnb ul { display: flex; margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--c-line); }
.gnb li { flex: 1; }
.gnb a { display: flex; align-items: center; justify-content: center; min-height: 52px; font-size: 18px; font-weight: 700; color: var(--c-text); text-decoration: none; border-bottom: 3px solid transparent; }
.gnb a[aria-current="page"] { color: var(--c-primary); border-bottom-color: var(--c-primary); }
@media (min-width: 768px) {
  .header-in { flex-direction: row; justify-content: space-between; align-items: center; }
  .logo { min-height: 72px; }
  .gnb ul { border-top: 0; gap: 8px; }
  .gnb li { flex: none; }
  .gnb a { white-space: nowrap; padding: 0; }
  .gnb a { min-height: 72px; padding: 0 18px; }
  h1 { font-size: 34px; }
  h2 { font-size: 26px; }
}

/* 현재 위치 */
.crumb ol { display: flex; flex-wrap: wrap; gap: 4px; margin: 16px 0 4px; padding: 0; list-style: none; font-size: 16px; color: var(--c-muted); }
.crumb li + li::before { content: "›"; margin: 0 6px 0 2px; }
.crumb a { color: var(--c-muted); }

/* 버튼 */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 52px; padding: 0 22px; border-radius: var(--radius); font-size: 18px; font-weight: 700; text-decoration: none; cursor: pointer; border: 1px solid transparent; font-family: inherit; line-height: 1.3; }
.btn-primary { background: var(--c-primary); color: #fff; }
.btn-primary:hover { background: var(--c-primary-dk); color: #fff; }
.btn-outline { background: #fff; color: var(--c-primary); border-color: var(--c-primary); }
.btn-outline:hover { background: var(--c-primary-bg); }
.btn-sm { min-height: 48px; padding: 0 16px; font-size: 17px; }
.btn-wide { width: 100%; margin-top: 8px; font-size: 20px; min-height: 56px; }

/* 홈 */
.hero { background: var(--c-bg-soft); border-bottom: 1px solid var(--c-line); padding: 28px 0 32px; }
.hero h1 { margin-top: 0; }
.search { background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius); padding: 18px 16px 20px; }
.seg { display: flex; border: 0; margin: 0 0 14px; padding: 0; }
.seg legend { font-weight: 700; margin-bottom: 6px; padding: 0; }
.seg label { flex: 1; position: relative; }
.seg input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.seg span { display: flex; align-items: center; justify-content: center; min-height: 52px; border: 1px solid var(--c-line-strong); font-weight: 700; font-size: 19px; color: var(--c-text); cursor: pointer; background: #fff; }
.seg label:first-of-type span { border-radius: var(--radius) 0 0 var(--radius); }
.seg label:last-of-type span { border-radius: 0 var(--radius) var(--radius) 0; border-left: 0; }
.seg input:checked + span { background: var(--c-primary); border-color: var(--c-primary); color: #fff; }
.seg input:focus-visible + span { outline: 3px solid #f2a900; outline-offset: 2px; }
.search-grid { display: grid; grid-template-columns: 1fr; gap: 12px; }
@media (min-width: 768px) {
  .hero { padding: 44px 0 48px; }
  .search { padding: 24px 24px 26px; }
  .search-grid { grid-template-columns: repeat(4, 1fr); }
  .seg { max-width: 420px; }
}

/* 입력칸 */
.field { display: flex; flex-direction: column; }
.field[hidden] { display: none; }
.field label { font-weight: 700; font-size: 17px; margin-bottom: 4px; }
select { appearance: none; -webkit-appearance: none; width: 100%; min-height: 52px; padding: 0 40px 0 14px; font-size: 18px; font-family: inherit; color: var(--c-text); background: #fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='9' viewBox='0 0 14 9'%3E%3Cpath d='M1 1l6 6 6-6' stroke='%231b1f24' stroke-width='2' fill='none'/%3E%3C/svg%3E") no-repeat right 14px center; border: 1px solid var(--c-line-strong); border-radius: var(--radius); }
select:disabled { background-color: #eef0f3; color: #5b6470; }
.check { display: inline-flex; align-items: center; gap: 10px; min-height: 48px; margin-top: 8px; font-size: 18px; cursor: pointer; }
.check input { width: 24px; height: 24px; accent-color: var(--c-primary); }

/* 시도 바로가기 */
.sido-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; margin: 0; padding: 0; list-style: none; }
.sido-grid > li { border: 1px solid var(--c-line); border-radius: var(--radius); background: #fff; }
.sido-grid > li > a { display: flex; justify-content: space-between; align-items: center; min-height: 56px; padding: 0 16px; text-decoration: none; color: var(--c-text); }
.sido-grid > li > a span { color: var(--c-muted); }
.sido-grid.two > li { padding: 10px 14px 8px; }
.sido-grid.two .sido-name { font-weight: 800; font-size: 19px; margin: 0 0 2px; }
.sido-grid.two a, .sido-grid.two .none { display: block; line-height: 48px; min-height: 48px; font-size: 18px; text-decoration: none; border-top: 1px solid #edf0f3; white-space: nowrap; padding: 0; }
.sido-grid.two a b { margin: 0 1px 0 4px; }
.sido-grid.two .none { color: var(--c-muted); font-size: 17px; }
@media (min-width: 768px) { .sido-grid { grid-template-columns: repeat(4, 1fr); } }
@media (min-width: 1024px) { .sido-grid { grid-template-columns: repeat(6, 1fr); } .sido-grid.two { grid-template-columns: repeat(6, 1fr); } }

.diff-grid { display: grid; gap: 12px; }
.diff-box { border: 1px solid var(--c-line); border-radius: var(--radius); padding: 18px 18px 8px; }
.diff-box h3 { margin-top: 0; }
.diff-box ul, .plain { padding-left: 20px; margin: 0 0 12px; }
.diff-box li, .plain li { margin-bottom: 6px; }
@media (min-width: 768px) { .diff-grid { grid-template-columns: 1fr 1fr; } }

/* 필터 */
.filter { border: 1px solid var(--c-line); background: var(--c-bg-soft); border-radius: var(--radius); padding: 18px 16px; margin: 16px 0 20px; }
.filter-grid { display: grid; grid-template-columns: 1fr; gap: 12px; }
@media (min-width: 768px) { .filter-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .filter-grid { grid-template-columns: repeat(4, 1fr); } }
.filter-foot { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-top: 12px; border-top: 1px solid var(--c-line); padding-top: 12px; }
.count { margin: 0; font-size: 20px; }
.count b { color: var(--c-primary); font-size: 24px; }
.help { margin-top: 12px; }
.help summary { min-height: 48px; display: flex; align-items: center; cursor: pointer; color: var(--c-primary); font-weight: 700; }
.help ul { margin: 4px 0 0; padding-left: 20px; }
.help li { margin-bottom: 6px; }
.empty-msg, .empty-box { border: 1px solid var(--c-line); border-radius: var(--radius); padding: 20px; background: var(--c-bg-soft); }

/* 카드 목록 */
.cards, .rows { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: 1fr; gap: 10px; }
@media (min-width: 768px) { .cards, .rows { grid-template-columns: 1fr 1fr; } }
.card, .row-item { border: 1px solid var(--c-line); border-radius: var(--radius); padding: 14px 16px 12px; background: #fff; }
.card[hidden], .row-item[hidden] { display: none; }
.card-title { display: inline-block; font-size: 20px; font-weight: 700; line-height: 1.4; text-decoration: none; padding: 4px 0; }
.card-title:hover { text-decoration: underline; }
.meta { margin: 2px 0 6px; color: var(--c-muted); }
.meta.big { font-size: 18px; }
.tag { display: inline-block; border: 1px solid var(--c-line-strong); color: var(--c-text); font-size: 15px; font-weight: 600; padding: 0 8px; border-radius: 3px; margin-right: 6px; line-height: 1.7; }
.price { margin: 0 0 4px; display: flex; flex-wrap: wrap; gap: 2px 14px; }
.price.unknown, .unknown { color: var(--c-muted); }
.chk { margin: 0; font-size: 16px; color: var(--c-muted); }
.g-line { margin: 0; }

/* 등급 */
.grade { display: inline-flex; align-items: baseline; gap: 4px; border: 2px solid currentColor; border-radius: 4px; padding: 0 10px; font-weight: 700; font-size: 18px; }
.grade b { font-size: 22px; }
.grade.sm { font-size: 16px; padding: 0 7px; border-width: 1px; }
.grade.sm b { font-size: 17px; }
.g-a { color: #1d5e2c; }
.g-b { color: #1f4e8c; }
.g-c { color: #3d4650; }
.g-d { color: #7a4a00; }
.g-e { color: #9b1c1c; }
.g-none { color: var(--c-muted); font-weight: 600; }
.grade-box { border: 1px solid var(--c-line); border-radius: var(--radius); padding: 16px; }
.grade-box .grade { font-size: 22px; margin-bottom: 10px; }
.grade-box .grade b { font-size: 30px; }

/* 상세 */
.actions { display: flex; flex-direction: column; gap: 10px; margin: 16px 0 8px; }
.btn-call { display: flex; align-items: center; justify-content: center; gap: 10px; min-height: 60px; border-radius: var(--radius); font-size: 21px; font-weight: 800; background: var(--c-primary); color: #fff; text-decoration: none; margin: 0; }
.btn-call:hover { background: var(--c-primary-dk); color: #fff; }
.btn-call.off { background: #eef0f3; color: var(--c-muted); border: 1px solid var(--c-line); font-weight: 700; font-size: 19px; }
@media (min-width: 768px) { .actions { flex-direction: row; } .actions > * { flex: 1; max-width: 380px; } }
.dl { margin: 0; border-top: 2px solid var(--c-text); }
.dl .row { display: grid; grid-template-columns: 1fr; padding: 12px 2px; border-bottom: 1px solid var(--c-line); }
.dl dt { font-weight: 700; color: var(--c-muted); font-size: 17px; }
.dl dd { margin: 0; }
.dl .val { margin: 0; font-size: 20px; font-weight: 700; }
.dl .val .unknown { font-weight: 600; font-size: 18px; }
.src { margin: 2px 0 0; font-size: 16px; color: var(--c-muted); }
@media (min-width: 768px) { .dl .row { grid-template-columns: 180px 1fr; gap: 16px; } .dl dt { font-size: 18px; } }
.hint { color: var(--c-muted); font-size: 17px; }
.note { border-left: 4px solid var(--c-line-strong); padding: 6px 12px; background: var(--c-bg-soft); color: var(--c-muted); }
.old { display: inline-block; font-size: 15px; font-weight: 700; color: var(--c-warn); background: var(--c-warn-bg); border: 1px solid #e3b26b; padding: 0 8px; border-radius: 3px; margin-left: 4px; }
.src-list { padding-left: 20px; margin: 0 0 10px; }
.src-list li { margin-bottom: 6px; }
.fix-req { margin-top: 40px; border: 1px solid var(--c-line); border-radius: var(--radius); padding: 18px 16px; }
.prepare-msg { margin: 12px 0 0; padding: 10px 12px; background: var(--c-primary-bg); border-radius: 4px; }
.more { margin-top: 20px; }
.more a { display: inline-flex; align-items: center; min-height: 48px; font-weight: 700; }

/* 표 */
.tbl { border-collapse: collapse; width: 100%; max-width: 480px; }
.tbl th, .tbl td { border-bottom: 1px solid var(--c-line); padding: 10px 8px; text-align: left; }
.tbl thead th { border-bottom: 2px solid var(--c-text); font-size: 17px; }

/* 꼬리말 */
.site-footer { border-top: 1px solid var(--c-line); background: var(--c-bg-soft); padding: 28px 0 40px; font-size: 17px; color: var(--c-muted); }
.f-strong { font-weight: 800; color: var(--c-text); }
.f-list { padding-left: 20px; margin: 0 0 12px; }
.f-list li { margin-bottom: 4px; }
.site-footer a { display: inline-flex; align-items: center; min-height: 48px; font-weight: 700; }
.f-small { font-size: 16px; }
.dl + .hint, .dl + .h-sm { margin-top: 16px; }
.nw { white-space: nowrap; }