/* KOSUNI 계산기 — 모바일 우선, 큰 글자, 단순한 화면 (Bootstrap 미사용) */
@font-face{font-family:"Pretendard";font-weight:400;font-style:normal;font-display:swap;src:url("../fonts/Pretendard-Regular.woff2") format("woff2")}
@font-face{font-family:"Pretendard";font-weight:600;font-style:normal;font-display:swap;src:url("../fonts/Pretendard-SemiBold.woff2") format("woff2")}
@font-face{font-family:"Pretendard";font-weight:800;font-style:normal;font-display:swap;src:url("../fonts/Pretendard-ExtraBold.woff2") format("woff2")}

:root{
  --blue:#1f5eff; --blue-d:#0b3bb8; --blue-l:#eef3ff;
  --text:#111827; --sub:#374151; --muted:#6b7280; --line:#e5e7eb; --bg:#fff; --bg2:#f5f7fa;
  --bad:#c62828; --bad-l:#fdecea;
  --r:14px;
  --font:"Pretendard",-apple-system,BlinkMacSystemFont,"Apple SD Gothic Neo","Noto Sans KR","Malgun Gothic",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--font);font-size:18px;line-height:1.65;color:var(--text);background:var(--bg);word-break:keep-all;overflow-wrap:anywhere;-webkit-font-smoothing:antialiased}
a{color:var(--blue-d);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;height:auto}
button,input,select{font:inherit;color:inherit}
[hidden]{display:none!important}
:focus-visible{outline:3px solid #8fb0ff;outline-offset:2px}
.skip{position:absolute;left:-999px;top:0}.skip:focus{left:8px;z-index:99;background:#fff;padding:8px}
.wrap{max-width:720px;margin:0 auto;padding:0 20px}
.small{font-size:15px}.muted{color:var(--muted)}
h1{font-size:28px;line-height:1.35;margin:4px 0 8px;letter-spacing:-.4px}
h2{font-size:22px;line-height:1.4;margin:0 0 12px;letter-spacing:-.3px}
.page{padding:12px 20px 40px}
.lead{margin:0 0 20px;color:var(--sub);font-size:18px}

/* 헤더 */
.hd{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid var(--line)}
.hd-in{display:flex;align-items:center;gap:4px;height:60px}
.logo{display:flex;align-items:center;gap:8px;font-weight:800;font-size:20px;color:var(--text);margin-right:auto}
.logo:hover{text-decoration:none}
.hd-btn{display:flex;align-items:center;justify-content:center;width:48px;height:48px;border:0;background:none;border-radius:12px;color:var(--text);cursor:pointer}
.hd-btn:hover{background:var(--bg2)}
.gnb{border-top:1px solid var(--line);background:#fff}
.gnb .wrap{display:grid;grid-template-columns:1fr 1fr;gap:6px;padding:12px 20px 16px}
.gnb a{display:block;padding:14px;border-radius:12px;background:var(--bg2);color:var(--text);font-weight:600;font-size:18px}
.gnb a:hover{background:var(--blue-l);text-decoration:none}

/* 공통 */
.crumb{font-size:15px;color:var(--muted);margin:4px 0 6px;display:flex;flex-wrap:wrap;gap:4px}
.crumb a{color:var(--muted)}.crumb .sep{margin:0 2px}
.sec-t{font-size:20px;margin:28px 0 10px}
.sec-t a{color:var(--text)}.sec-t small{font-size:15px;color:var(--muted);font-weight:400}
.box{margin:28px 0 0;padding:20px;border:1px solid var(--line);border-radius:var(--r)}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:52px;padding:0 22px;border-radius:12px;border:1px solid var(--line);background:#fff;font-weight:600;font-size:18px;cursor:pointer;color:var(--text)}
.btn:hover{text-decoration:none;border-color:#c7d2fe}
.link-btn{border:0;background:none;padding:0;color:var(--blue-d);cursor:pointer;font-size:15px;text-decoration:underline}
.empty{padding:28px 16px;text-align:center;color:var(--muted);background:var(--bg2);border-radius:var(--r)}

/* 검색 */
.search-big{display:flex;gap:8px;margin:12px 0 8px}
.search-big input{flex:1;min-width:0;height:56px;border:2px solid var(--line);border-radius:14px;padding:0 16px;font-size:18px;background:#fff}
.search-big input:focus{border-color:var(--blue);outline:0}
.search-big button{height:56px;padding:0 20px;border:0;border-radius:14px;background:var(--blue);color:#fff;font-weight:700;font-size:18px;cursor:pointer}

/* 계산기 목록 */
.clist{list-style:none;margin:0;padding:0;border-top:1px solid var(--line)}
.clist a{display:block;padding:16px 4px;border-bottom:1px solid var(--line);color:var(--text)}
.clist a:hover{text-decoration:none;background:var(--bg2)}
.clist b{display:block;font-size:19px;font-weight:600}
.clist span{display:block;font-size:16px;color:var(--muted);margin-top:2px}
.chips{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:8px}
.chips a{display:inline-block;padding:10px 14px;border-radius:999px;background:var(--bg2);color:var(--text);font-size:16px}
.chips a:hover{background:var(--blue-l);text-decoration:none}
.chips.big a{padding:12px 18px;font-size:17px;font-weight:600}
.links{margin:0;padding-left:20px}.links li{margin:6px 0}
.upd{list-style:none;margin:0;padding:0}.upd li{padding:8px 0;border-bottom:1px solid var(--line)}.upd li:last-child{border:0}
.upd span{display:block;color:var(--muted);font-size:15px}
.home h1{font-size:30px;margin-top:16px}
.trust ul{margin:0;padding-left:20px}.trust li{margin:6px 0}

/* 계산기 폼 */
.calc-grid{display:block}
.cf{display:flex;flex-direction:column;gap:18px}
.fld label,.fld legend{display:block;font-weight:600;font-size:17px;margin:0 0 6px;padding:0}
.fld fieldset{border:0;margin:0;padding:0;min-width:0}
.inp{position:relative}
.inp input,.fld select,.fld input[type=date]{width:100%;height:58px;border:2px solid var(--line);border-radius:14px;padding:0 16px;font-size:20px;background:#fff;-webkit-appearance:none;appearance:none}
.fld select{background:#fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%236b7280' stroke-width='2.5'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E") no-repeat right 16px center;padding-right:44px;font-size:18px}
.inp.has-unit input{padding-right:84px}
.inp .unit{position:absolute;right:16px;top:50%;transform:translateY(-50%);color:var(--muted);font-size:17px;pointer-events:none}
.inp input:focus,.fld select:focus,.fld input[type=date]:focus{border-color:var(--blue);outline:0}
.fld.big .inp input{height:66px;font-size:26px;font-weight:700}
.fld.has-err .inp input,.fld.has-err select{border-color:var(--bad)}
.kor{margin:6px 2px 0;font-size:16px;color:var(--blue-d);min-height:1.2em}
.help{margin:6px 2px 0;font-size:15px;color:var(--muted);line-height:1.5}
.err{margin:6px 2px 0;font-size:16px;color:var(--bad);font-weight:600}
.seg{display:flex;flex-wrap:wrap;gap:8px}
.seg label{position:relative;flex:1 1 auto;margin:0;font-weight:400}
.seg input{position:absolute;opacity:0;inset:0;cursor:pointer}
.seg span{display:flex;align-items:center;justify-content:center;min-height:52px;padding:0 14px;border:2px solid var(--line);border-radius:14px;font-size:17px;text-align:center;cursor:pointer;white-space:nowrap}
.seg input:checked+span{border-color:var(--blue);background:var(--blue-l);color:var(--blue-d);font-weight:700}
.seg input:focus-visible+span{outline:3px solid #8fb0ff;outline-offset:2px}
.chk{display:flex!important;align-items:center;gap:12px;min-height:52px;font-weight:600;cursor:pointer}
.chk input[type=checkbox]{width:26px;height:26px;accent-color:var(--blue);margin:0;flex:none}
.swap-row{display:flex;justify-content:center;margin:-8px 0}
.swap-btn{display:inline-flex;align-items:center;gap:8px;min-height:48px;padding:0 20px;border:2px solid var(--line);border-radius:999px;background:#fff;color:var(--blue-d);font-size:17px;font-weight:700;cursor:pointer}
.swap-btn:hover{border-color:var(--blue);background:var(--blue-l)}
.swap-btn svg{transition:transform .2s}
.swap-btn.spin svg{transform:rotate(180deg)}
.btn-go{width:100%;min-height:60px;border:0;background:var(--blue);color:#fff;font-size:20px;font-weight:700;border-radius:14px}
.btn-go:hover{background:var(--blue-d)}

/* 결과 */
.res{margin-top:24px;scroll-margin-top:72px}
.share-bar{display:flex;gap:8px;margin:14px 0 6px}
.kakao-btn{flex:1;display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:50px;border:0;border-radius:12px;background:#FEE500;color:#191919;font-size:17px;font-weight:700;cursor:pointer}
.kakao-btn:hover{background:#f5dc00}
.copy-btn{min-height:50px;padding:0 16px;border:2px solid var(--line);border-radius:12px;background:#fff;font-size:16px;font-weight:600;cursor:pointer;color:var(--sub)}
.copy-btn:hover{border-color:#c7d2fe}
.res-head{background:var(--blue);color:#fff;border-radius:18px;padding:22px 22px 20px}
.res-label{margin:0;font-size:17px;opacity:.9}
.res-value{margin:4px 0 0;font-size:40px;font-weight:800;line-height:1.2;letter-spacing:-1px;font-variant-numeric:tabular-nums}
.res-sub{margin:6px 0 0;font-size:17px;opacity:.92}
.res.loading .res-head{opacity:.7}
.res-items{margin:14px 0 0;padding:0}
.res-items>div{display:flex;justify-content:space-between;align-items:baseline;gap:12px;padding:14px 2px;border-bottom:1px solid var(--line)}
.res-items dt{font-size:17px;color:var(--sub)}
.res-items dt small{display:block;font-size:14px;color:var(--muted)}
.res-items dd{margin:0;font-size:19px;font-weight:600;text-align:right;font-variant-numeric:tabular-nums;white-space:nowrap}
.res-items .strong dd{color:var(--blue-d);font-weight:800;font-size:21px}
.res-tbl,.res-steps{margin-top:16px;border:1px solid var(--line);border-radius:var(--r)}
.res-tbl summary,.res-steps summary{cursor:pointer;padding:14px 16px;font-weight:600;font-size:17px;list-style:none}
.res-tbl summary::after,.res-steps summary::after{content:"+";float:right;color:var(--muted)}
.res-tbl[open] summary::after,.res-steps[open] summary::after{content:"−"}
.res-tbl summary::-webkit-details-marker,.res-steps summary::-webkit-details-marker{display:none}
.res-steps ol{margin:0;padding:0 16px 14px 36px;font-size:16px;color:var(--sub)}
.res-steps li{margin:6px 0}
.res-notes{margin:16px 0 0;padding:14px 16px 14px 34px;background:var(--bg2);border-radius:var(--r);font-size:15px;color:var(--sub)}
.res-notes li{margin:4px 0}
.res-basis{margin-top:14px;font-size:14px;color:var(--muted)}
.res-basis p{margin:2px 0}.res-basis a{color:var(--muted);text-decoration:underline}
.res-links{margin:14px 0 0;display:flex;flex-direction:column;gap:6px;font-weight:600}
.res-err{background:var(--bad-l);color:#7f1d1d;border-radius:var(--r);padding:16px 18px}
.res-err p{margin:0 0 4px}.res-err ul{margin:0;padding-left:20px}

/* 표 */
.tbl-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch}
.tbl{width:100%;border-collapse:collapse;font-size:16px}
.tbl th,.tbl td{padding:11px 12px;border-top:1px solid var(--line);text-align:left;vertical-align:top}
.tbl thead th{background:var(--bg2);font-weight:600;white-space:nowrap;font-size:15px;color:var(--sub)}
.tbl .num{text-align:right;white-space:nowrap;font-variant-numeric:tabular-nums}
.tbl tfoot td{font-weight:700;background:var(--bg2)}
.tbl td small{display:block;font-size:13px;color:var(--muted);line-height:1.4;margin-top:2px}
.cmp tr.cur td{background:var(--blue-l);font-weight:700}
.box .tbl{margin:0 -4px}

/* 설명문 */
.prose h2{font-size:21px;margin:26px 0 8px}
.prose h2:first-child{margin-top:0}
.prose p,.prose li{color:var(--sub);font-size:17px}
.prose ul{padding-left:22px}
.prose li{margin:6px 0}

/* 광고: 계산 결과와 구분, 최소 높이 확보 */
.ad{margin:28px 0 0;min-height:120px;text-align:center}
.ad-label{display:block;font-size:12px;color:var(--muted);text-align:left;margin:0 0 4px}
.ad:has(ins[data-ad-status="unfilled"]){display:none}

/* 푸터 */
.ft{margin-top:48px;background:var(--bg2);padding:32px 0 24px;font-size:15px;color:var(--muted)}
.ft-brand{margin:0 0 8px;font-weight:800;color:var(--text);font-size:17px}
.ft-brand span{font-weight:400;color:var(--muted);font-size:15px;margin-left:4px}
.ft-note{margin:0 0 16px;line-height:1.6}
.ft-links{display:flex;flex-wrap:wrap;gap:6px 16px;margin-bottom:18px}
.ft-links a{color:var(--sub)}
.ft-bottom{display:flex;justify-content:space-between;align-items:center;border-top:1px solid var(--line);padding-top:14px}
.gear{color:#9ca3af;display:flex;padding:6px}.gear:hover{color:var(--text)}

/* 태블릿·PC: 입력 | 결과 2단 */
@media (min-width:960px){
  .wrap{max-width:1080px}
  .home.wrap,.prose.wrap{max-width:760px}
  h1{font-size:34px}
  .calc-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:40px;align-items:start}
  .res{margin-top:0;position:sticky;top:80px}
  .calc-page .box{max-width:none}
  .gnb .wrap{grid-template-columns:repeat(4,1fr)}
}
@media (max-width:380px){
  body{font-size:17px}
  .wrap,.page{padding-left:16px;padding-right:16px}
  h1{font-size:25px}
  .res-value{font-size:34px}
  .seg span{padding:0 10px;font-size:16px}
}