/* (주)아인시스템 홈페이지 — 시안 9 (브론즈 & 골드) */
:root{
  --bronze:#655639; --bronze-d:#5B4D33; --bronze-l:#74664A; --line-d:#7A6B4D;
  --ink:#4E4329; --gold:#C9A060; --gold-l:#F0DDAE; --gold-t:#E9CF97; --gold-m:#8A6D3B;
  --sand:#F7F5F0; --text:#3A3330; --muted:#5E5652; --card-line:#E6DFD1; --row:#EEE8DC;
  --on-dark:#EDEBE6; --on-dark2:#E3DCCB;
  --serif:'Noto Serif KR',serif; --sans:'Noto Sans KR',sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bronze);color:var(--on-dark);font-family:var(--sans);word-break:keep-all;overflow-wrap:anywhere;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:var(--gold-l)}a:hover{color:#F1D8A0}
.wrap{max-width:1240px;margin:0 auto;padding:0 24px}
.eyebrow{font-size:13px;letter-spacing:.3em}
.h2{margin:0;font-family:var(--serif);font-size:40px;font-weight:700;line-height:1.35}
.rule{width:48px;height:2px;background:var(--gold)}

/* header */
.hd{border-bottom:1px solid rgba(240,221,174,.4);position:sticky;top:0;z-index:30;background:rgba(101,86,57,.97);backdrop-filter:blur(6px)}
.hd .wrap{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px 24px;padding-top:18px;padding-bottom:18px}
.hd .logo img{height:60px;width:auto}
.nav{display:flex;flex-wrap:wrap;gap:12px 44px;font-size:18px;font-weight:500;letter-spacing:.04em}
.nav a{color:var(--on-dark);text-decoration:none;padding:6px 0}
.nav a:hover,.nav a.on{color:var(--gold-t)}

/* hero */
.hero{position:relative;overflow:hidden}
.hero .mark{position:absolute;right:-60px;top:40px;height:620px;width:auto;opacity:.07;pointer-events:none}
.hero .in{position:relative;padding-top:120px;padding-bottom:80px;display:flex;flex-direction:column;align-items:center;gap:30px;text-align:center}
.hero h1{margin:0;font-family:var(--serif);font-weight:700;font-size:60px;line-height:1.35;color:#fff}
.hero .bar{width:96px;height:2px;background:linear-gradient(90deg,#F1D8A0,#C9A060)}
.hero .sub{display:flex;flex-direction:column;align-items:center;gap:10px}
.hero .sub p{margin:0;font-size:22px;letter-spacing:.08em;color:#EAE4D6}
.hero .sub .co{font-family:var(--serif);font-size:26px;font-weight:700;letter-spacing:.12em;color:var(--gold-t)}
.hero .photo{position:relative;padding-bottom:100px}
.hero .photo .box{height:460px;background:var(--bronze-l);border:1px solid var(--line-d);overflow:hidden}
.hero .photo img{width:100%;height:100%;object-fit:cover}

/* about */
.about{background:var(--sand);color:var(--bronze)}
.about .wrap{padding-top:110px;padding-bottom:110px;display:flex;flex-direction:column;gap:56px}
.about .head{display:flex;flex-direction:column;align-items:flex-start;gap:14px}
.about .head .eyebrow{color:var(--gold-m)}
.about .motto{margin:0;font-family:var(--serif);font-size:24px;font-weight:700;line-height:1.7;color:var(--bronze)}
.about .info{display:flex;flex-wrap:wrap;gap:32px 56px;border-top:2px solid var(--bronze);padding-top:36px}
.about .addr{flex:3 1 520px;min-width:0;display:flex;flex-direction:column;font-size:16px;line-height:1.7}
.about .addr div{padding:14px 0;border-bottom:1px solid #D9D4C7;display:flex;gap:20px}
.about .addr b{color:var(--gold-m);font-weight:500;flex:none;width:40px}
.about .addr span{color:var(--text)}
.about .stats{flex:2 1 420px;min-width:0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.about .stat{display:flex;flex-direction:column;gap:8px;border-left:2px solid var(--gold);padding-left:22px}
.about .stat span{font-size:13px;color:var(--gold-m)}
.about .stat strong{font-family:var(--serif);font-size:32px;color:var(--ink)}
.about .stat small{font-size:13px;color:var(--muted);line-height:1.6}

/* business */
.biz .wrap{padding-top:110px;padding-bottom:110px;display:flex;flex-direction:column;gap:48px}
.biz .head{display:flex;flex-direction:column;gap:14px}
.biz .head .eyebrow{color:var(--gold-l)}
.biz .head .h2{color:#fff}
.biz .grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1px;background:var(--line-d);border:1px solid var(--line-d)}
.biz .card{background:var(--bronze);padding:0 0 36px;display:flex;flex-direction:column;gap:16px}
.biz .ph{height:220px;background:var(--bronze-l);overflow:hidden}
.biz .ph img{width:100%;height:100%;object-fit:cover}
.biz .no{font-family:var(--serif);font-size:15px;color:var(--gold-l);padding:12px 32px 0}
.biz h3{margin:0;padding:0 32px;font-family:var(--serif);font-size:25px;font-weight:700;color:#fff}
.biz p{margin:0;padding:0 32px;font-size:15px;line-height:1.8;color:var(--on-dark2)}

/* products */
.prod{background:var(--sand);color:var(--bronze)}
.prod .wrap{padding-top:110px;padding-bottom:110px;display:flex;flex-direction:column;gap:72px}
.prod .head{display:flex;flex-direction:column;gap:14px}
.prod .head .eyebrow{color:#9A7A3E}
.pgroup{display:flex;flex-direction:column;gap:32px}
.pgroup .gh{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px 40px;padding-bottom:22px;border-bottom:2px solid var(--bronze)}
.pgroup .gt{display:flex;align-items:baseline;gap:20px}
.pgroup .gno{font-family:var(--serif);font-size:44px;font-weight:700;color:var(--gold);line-height:1}
.pgroup .gen{font-size:12px;letter-spacing:.3em;color:var(--gold-m)}
.pgroup h3{margin:6px 0 0;font-family:var(--serif);font-size:34px;font-weight:700;color:var(--ink)}
.pgroup .gdesc{margin:0;max-width:520px;font-size:15px;line-height:1.8;color:#4A433F}
.pcards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.pcard{background:#fff;border:1px solid var(--card-line);padding:28px 28px 26px;display:flex;flex-direction:column;gap:16px}
.pcard .ct{display:flex;align-items:baseline;justify-content:space-between;gap:12px}
.pcard h4{margin:0;font-family:var(--serif);font-size:22px;font-weight:700;color:var(--ink)}
.pcard .en{font-size:11px;letter-spacing:.22em;color:#B8945A;margin-top:4px;display:block}
.pcard .cno{font-family:var(--serif);font-size:26px;color:#D9C29A;flex:none}
.pcard .pi{height:200px;border:1px solid var(--row);overflow:hidden;background:#EFEAE0}
.pcard .pi img{width:100%;height:100%;object-fit:cover}
.pcard .pi.contain{background:#fff}
.pcard .pi.contain img{object-fit:contain;padding:12px}
.pcard table{width:100%;border-collapse:collapse;font-size:14px}
.pcard th{padding:10px 8px;font-size:12px;font-weight:500;letter-spacing:.06em;color:var(--gold-m);text-align:left;border-bottom:1px solid var(--gold)}
.pcard td{padding:10px 8px;border-bottom:1px solid var(--row);color:var(--text);font-variant-numeric:tabular-nums}
.pcard td:first-child{font-weight:500;color:var(--ink)}
.pcard th.r,.pcard td.r{text-align:right}
.pcard .note{margin:0;font-size:12.5px;line-height:1.7;color:#6B6255}

/* cases */
.cases .wrap{padding-top:110px;padding-bottom:110px;display:flex;flex-direction:column;gap:44px}
.cases .head{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:flex-end;gap:16px}
.cases .head .eyebrow{color:var(--gold-l)}
.cases .head .h2{color:#fff}
.btn-line{border:1px solid var(--gold-l);color:var(--gold-l);text-decoration:none;padding:13px 26px;font-size:15px;display:inline-block}
.btn-line:hover{background:rgba(240,221,174,.1);color:var(--gold-l)}
.cgrid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.ccard{background:var(--bronze-d);border:1px solid var(--line-d);display:flex;flex-direction:column;text-align:left;font:inherit;color:inherit;padding:0;cursor:pointer}
.ccard:hover{border-color:var(--gold)}
.ccard .im{aspect-ratio:4/3;background:var(--bronze-l);overflow:hidden;display:flex;align-items:center;justify-content:center;color:#E0D8C6;font-size:14px}
.ccard .im img{width:100%;height:100%;object-fit:cover}
.ccard .bd{padding:22px 24px 24px;display:flex;flex-direction:column;gap:8px}
.ccard .meta{font-size:13px;color:var(--gold-l);letter-spacing:.04em}
.ccard h3{margin:0;font-family:var(--serif);font-size:20px;font-weight:700;color:#fff;line-height:1.45}
.empty{grid-column:1/-1;border:1px dashed var(--line-d);padding:56px 24px;text-align:center;color:var(--on-dark2);line-height:1.8}
.filters{display:flex;flex-wrap:wrap;gap:8px}
.filters button{font:inherit;font-size:14px;padding:10px 18px;border:1px solid var(--line-d);background:transparent;color:var(--on-dark);cursor:pointer}
.filters button.on{background:var(--gold-t);color:var(--ink);border-color:var(--gold-t)}

/* dialog */
.dlg{border:none;padding:0;max-width:960px;width:calc(100% - 32px);max-height:calc(100% - 32px);background:#fff;color:var(--text)}
.dlg::backdrop{background:rgba(35,25,22,.7)}
.dlg .in{padding:32px;display:flex;flex-direction:column;gap:18px}
.dlg .top{display:flex;justify-content:space-between;gap:16px;align-items:flex-start}
.dlg .top h2{margin:6px 0 0;font-family:var(--serif);font-size:28px;color:var(--ink)}
.dlg .top .eyebrow{color:var(--gold-m)}
.dlg .x{font:inherit;font-size:26px;border:none;background:none;cursor:pointer;color:var(--muted);line-height:1;padding:4px 10px}
.dlg .main{width:100%;max-height:60vh;object-fit:contain;background:#F1ECE3}
.thumbs{display:flex;gap:8px;flex-wrap:wrap}
.thumbs button{border:2px solid transparent;padding:0;background:none;cursor:pointer;width:84px;height:64px}
.thumbs button.on{border-color:var(--gold)}
.thumbs img{width:100%;height:100%;object-fit:cover}
.facts{margin:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));border-top:2px solid var(--bronze)}
.facts div{padding:12px 4px;border-bottom:1px solid var(--row);font-size:14px}
.facts dt{color:var(--gold-m);font-size:12px;margin-bottom:4px}
.facts dd{margin:0}
.dlg .desc{margin:0;white-space:pre-line;line-height:1.85}

/* contact band + footer */
.band{background:linear-gradient(90deg,#E9CF97,#C9A060);color:var(--ink)}
.band .wrap{padding-top:56px;padding-bottom:56px;display:flex;justify-content:center;text-align:center}
.band h2{margin:0;font-family:var(--serif);font-size:30px;font-weight:700;line-height:1.5}
.ft .wrap{padding-top:56px;padding-bottom:64px;display:flex;flex-wrap:wrap;align-items:center;gap:28px 48px;font-size:14px;line-height:1.9;color:#DCD3BF}
.ft img{height:64px;width:auto}
.ft .txt{display:flex;flex-direction:column;padding-left:40px;border-left:1px solid rgba(240,221,174,.35)}
.ft a{color:#DCD3BF;text-decoration:none}
.ft a:hover{color:var(--gold-t)}

/* page header (cases.html) */
.page-hd .wrap{padding-top:96px;padding-bottom:40px;display:flex;flex-direction:column;gap:14px}
.page-hd .eyebrow{color:var(--gold-l)}
.page-hd .h2{color:#fff}
.page-hd p{margin:0;color:var(--on-dark2);line-height:1.8}

@media (max-width:1080px){
  .biz .grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .pcards,.cgrid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:720px){
  .hd .wrap{flex-direction:column;align-items:flex-start;gap:10px}
  .hd .logo img{height:44px}
  .nav{gap:6px 20px;font-size:15px}
  .hero .in{padding-top:72px;padding-bottom:56px;gap:22px}
  .hero h1{font-size:36px}
  .hero .sub p{font-size:17px}
  .hero .sub .co{font-size:20px}
  .hero .mark{height:360px;right:-80px}
  .hero .photo .box{height:240px}
  .h2{font-size:30px}
  .about .wrap,.biz .wrap,.prod .wrap,.cases .wrap{padding-top:72px;padding-bottom:72px}
  .about .motto{font-size:19px}
  .about .addr div{flex-direction:column;gap:2px}
  .about .stats{grid-template-columns:1fr 1fr}
  .biz .grid,.pcards,.cgrid{grid-template-columns:1fr}
  .pgroup h3{font-size:28px}
  .pgroup .gno{font-size:36px}
  .band h2{font-size:21px}
  .ft .txt{padding-left:0;border-left:none}
  .dlg .in{padding:20px}
}

/* 견적문의 */
.quote{background:var(--sand);color:var(--bronze)}
.quote .wrap{padding-top:96px;padding-bottom:96px;display:flex;flex-direction:column;gap:48px}
.quote .head{display:flex;flex-direction:column;gap:14px}
.quote .head .eyebrow{color:var(--gold-m)}
.qblock{display:flex;flex-direction:column;gap:18px}
.qh{margin:0;font-family:var(--serif);font-size:24px;font-weight:700;color:var(--ink);padding-bottom:12px;border-bottom:2px solid var(--bronze)}
.steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.steps li{background:#fff;border:1px solid var(--card-line);padding:26px 28px;display:flex;flex-direction:column;gap:10px}
.steps .sn{font-family:var(--serif);font-size:28px;font-weight:700;color:var(--gold)}
.steps p{margin:0;font-size:16px;line-height:1.75;color:var(--text)}
.qbtns{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.qbtn{display:flex;flex-direction:column;gap:8px;padding:26px 30px;background:#fff;border:1px solid var(--card-line);text-decoration:none;color:var(--ink)}
.qbtn span{font-size:14px;color:var(--gold-m)}
.qbtn strong{font-family:var(--serif);font-size:23px;font-weight:700;color:var(--ink);overflow-wrap:anywhere}
a.qbtn:hover{border-color:var(--gold)}
.qbtn.main{background:var(--bronze);border-color:var(--bronze)}
.qbtn.main span{color:var(--gold-l)}
.qbtn.main strong{color:#fff;font-size:27px}
a.qbtn.main:hover{background:var(--bronze-d)}
.qform{background:#fff;border:1px solid var(--card-line);padding:32px;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px 24px}
.frow{display:flex;flex-direction:column;gap:8px}
.frow.full{grid-column:1/-1}
.frow label{font-size:14px;font-weight:500;color:var(--ink)}
.frow label em{font-style:normal;color:#B4532A}
.frow input[type=text],.frow input[type=tel],.frow input[type=email],.frow textarea{font:inherit;font-size:16px;color:var(--text);border:1px solid #D9D4C7;background:#FDFCFA;padding:13px 14px;width:100%;border-radius:0}
.frow textarea{resize:vertical;min-height:140px;line-height:1.7}
.frow input:focus,.frow textarea:focus{outline:2px solid var(--gold);outline-offset:0;border-color:var(--gold)}
.agree label{font-weight:400;font-size:14px;line-height:1.7;color:var(--text);display:block}
.agree input{width:18px;height:18px;vertical-align:-3px;margin-right:6px;accent-color:var(--bronze)}
.agree small{display:block;color:var(--muted);font-size:12.5px;margin-left:26px}
.qsend{font:inherit;font-size:17px;font-weight:700;background:var(--bronze);color:#fff;border:none;padding:16px 40px;cursor:pointer;align-self:flex-start;min-height:52px}
.qsend:hover{background:var(--bronze-d)}
.qsend:disabled{opacity:.6;cursor:default}
.qmsg{margin:4px 0 0;font-size:15px;line-height:1.7;color:var(--ink)}
.qmsg.err{color:#B4532A}
.qnote{margin:0;font-size:14px;color:var(--muted)}
.hp{position:absolute;left:-9999px;width:1px;height:1px;opacity:0}
@media (max-width:820px){.steps,.qbtns,.qform{grid-template-columns:1fr}.quote .wrap{padding-top:72px;padding-bottom:72px}.qform{padding:22px}}
section[id]{scroll-margin-top:100px}
#inquiry{scroll-margin-top:100px}
@media (max-width:720px){section[id],#inquiry{scroll-margin-top:165px}}