@font-face{font-family:"IBM Plex Sans KR";font-style:normal;font-weight:300;font-display:swap;src:url(../fonts/plex-kr-300.woff2) format("woff2")}
@font-face{font-family:"IBM Plex Sans KR";font-style:normal;font-weight:400;font-display:swap;src:url(../fonts/plex-kr-400.woff2) format("woff2")}
@font-face{font-family:"IBM Plex Sans KR";font-style:normal;font-weight:600;font-display:swap;src:url(../fonts/plex-kr-600.woff2) format("woff2")}
@font-face{font-family:"IBM Plex Sans KR";font-style:normal;font-weight:700;font-display:swap;src:url(../fonts/plex-kr-700.woff2) format("woff2")}
@font-face{font-family:"IBM Plex Mono";font-style:normal;font-weight:400;font-display:swap;src:url(../fonts/plex-mono-400.woff2) format("woff2")}
@font-face{font-family:"IBM Plex Mono";font-style:normal;font-weight:500;font-display:swap;src:url(../fonts/plex-mono-500.woff2) format("woff2")}
:root{
  --ground:#0D1113; --ground-2:#11171A; --surface:#161E22; --surface-2:#1C262B;
  --line:#26333A; --line-soft:#1D272C;
  --silver:#DEE6EA; --muted:#8A9AA2; --dim:#5F6E75;
  --arc:#E9A63F; --arc-dim:#8A6323; --rust:#A04A1C; --zinc:#9FB8C4;
  --f-sans:"IBM Plex Sans KR","Apple SD Gothic Neo","Malgun Gothic",system-ui,sans-serif;
  --f-mono:"IBM Plex Mono","SFMono-Regular",Consolas,monospace;
  --nav-h:62px; --wrap:1200px; --pad:clamp(18px,4vw,48px);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;background:var(--ground);-webkit-text-size-adjust:100%;scroll-padding-top:calc(var(--nav-h) + 16px)}
body{margin:0;background:var(--ground);color:var(--silver);font-family:var(--f-sans);
     font-weight:400;line-height:1.72;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
picture{display:contents}
.skip{position:absolute;left:-9999px;top:0;z-index:999;background:var(--arc);color:#171003;
      padding:11px 18px;font-weight:600;font-size:.9rem}
.skip:focus{left:12px;top:10px}
:focus-visible{outline:3px solid var(--arc);outline-offset:3px;border-radius:2px}
.vh{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;
    clip:rect(0 0 0 0);white-space:nowrap;border:0}
a{color:inherit;text-decoration:none}
.wrap{width:100%;max-width:var(--wrap);margin-inline:auto;padding-inline:var(--pad)}
h1,h2,h3,h4{margin:0;font-weight:600;letter-spacing:-.025em;line-height:1.22;text-wrap:balance}
h1{font-size:clamp(1.85rem,4.4vw,3.1rem);font-weight:700;letter-spacing:-.035em;line-height:1.12}
h2{font-size:clamp(1.35rem,2.7vw,2rem)}
h3{font-size:clamp(1rem,1.5vw,1.15rem)}
p{margin:0}
.eyebrow{font-family:var(--f-mono);font-size:.68rem;letter-spacing:.16em;text-transform:uppercase;
         color:var(--arc);margin:0 0 14px;display:flex;align-items:center;gap:11px}
.eyebrow::before{content:"";width:24px;height:1px;background:var(--arc);flex:none}
.lede{color:var(--muted);font-size:clamp(.94rem,1.2vw,1.06rem);font-weight:300;max-width:60ch;margin-top:16px}
.note{font-size:.78rem;color:var(--dim);margin-top:12px;line-height:1.7}
.warn{font-size:.8rem;color:var(--rust);margin-top:12px;font-weight:600}

/* ---------- 상단 가로 메뉴 ---------- */
.nav{position:sticky;top:0;z-index:80;height:var(--nav-h);background:rgba(13,17,19,.93);
     backdrop-filter:blur(10px);border-bottom:1px solid var(--line-soft)}
.nav-in{max-width:var(--wrap);margin-inline:auto;padding-inline:var(--pad);height:100%;
        display:flex;align-items:center;justify-content:space-between;gap:18px}
.brand{display:flex;align-items:baseline;gap:9px;flex:none}
.brand b{font-size:1.05rem;font-weight:700;letter-spacing:-.02em}
.brand span{font-family:var(--f-mono);font-size:.64rem;color:var(--muted);letter-spacing:.09em}
.menu{display:flex;align-items:center;gap:clamp(6px,1.4vw,22px);flex-wrap:nowrap;overflow-x:auto;
      scrollbar-width:none}
.menu::-webkit-scrollbar{display:none}
.menu a{font-size:.85rem;color:var(--muted);padding:7px 2px;white-space:nowrap;position:relative;
        transition:color .22s ease}
.menu a::after{content:"";position:absolute;left:0;right:0;bottom:-1px;height:2px;background:var(--arc);
               transform:scaleX(0);transform-origin:left;transition:transform .26s ease}
.menu a:hover{color:var(--silver)}
.menu a[aria-current="page"]{color:var(--silver);font-weight:600}
.menu a[aria-current="page"]::after{transform:scaleX(1)}
.navtel{font-family:var(--f-mono);font-size:.74rem;letter-spacing:.04em;border:1px solid var(--line);
        padding:7px 13px;flex:none;transition:border-color .22s,background .22s}
.navtel:hover{border-color:var(--arc);background:rgba(233,166,63,.08)}
.burger{display:none;background:none;border:1px solid var(--line);color:var(--silver);
        padding:7px 11px;font-size:.8rem;cursor:pointer;flex:none}

/* ---------- 히어로 ---------- */
.hero{position:relative;min-height:clamp(320px,46vh,460px);display:flex;align-items:flex-end;
      padding:clamp(52px,9vh,96px) 0 clamp(30px,5vh,52px);overflow:hidden;background:var(--ground-2)}
.hero-tall{min-height:clamp(420px,74vh,720px)}
.hero-bg{position:absolute;inset:0;z-index:0}
.hero-img{width:100%;height:100%;object-fit:cover;object-position:center 42%}
.hero-scrim{position:absolute;inset:0;z-index:1;background:
  linear-gradient(to top,rgba(13,17,19,.97) 2%,rgba(13,17,19,.60) 34%,rgba(13,17,19,.18) 72%),
  linear-gradient(to right,rgba(13,17,19,.86) 0%,rgba(13,17,19,.20) 62%)}
.hero-in{position:relative;z-index:2}
.hero h1{max-width:19ch;text-shadow:0 2px 26px rgba(0,0,0,.42)}

/* ---------- 섹션 ---------- */
.sect{padding:clamp(38px,6.5vh,74px) 0;border-top:1px solid var(--line-soft)}
.sect:first-of-type{border-top:0}
.sect.alt{background:var(--ground-2)}
.sect > .wrap > * + *{margin-top:18px}
.sect > .wrap > h2 + .lede{margin-top:14px}

/* ---------- 2단 ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:clamp(22px,4vw,56px);align-items:start}
.split.lean{grid-template-columns:1.15fr .85fr}
.split.lean-r{grid-template-columns:.85fr 1.15fr}
.split.mid{align-items:center}
.split > div > * + *{margin-top:16px}

/* ---------- 목록 ---------- */
.bul{margin:0;padding:0;list-style:none;display:flex;flex-direction:column;gap:9px}
.bul li{position:relative;padding-left:17px;color:var(--muted);font-size:.92rem;font-weight:300;line-height:1.76}
.bul li::before{content:"";position:absolute;left:0;top:.66em;width:6px;height:1px;background:var(--arc)}
.bul li b,.bul li strong{color:var(--silver);font-weight:600}
.bul.tight li{font-size:.86rem;gap:6px}

/* ---------- 정의목록 ---------- */
.dl{margin:0;display:grid;grid-template-columns:auto 1fr;gap:0 20px}
.dl dt{font-family:var(--f-mono);font-size:.68rem;letter-spacing:.09em;text-transform:uppercase;
       color:var(--dim);padding:10px 0;border-top:1px solid var(--line-soft);white-space:nowrap}
.dl dd{margin:0;font-size:.88rem;color:var(--silver);padding:10px 0;border-top:1px solid var(--line-soft);
       font-weight:300}
.dl dd b{font-weight:600}
.dl dd em{font-style:normal;color:var(--muted);font-size:.8rem}

/* ---------- 표 ---------- */
.tw{overflow-x:auto;border:1px solid var(--line);background:var(--ground)}
table{width:100%;border-collapse:collapse;font-size:.83rem;min-width:520px}
th,td{padding:9px 13px;text-align:left;border-bottom:1px solid var(--line-soft);vertical-align:top}
thead th{background:var(--surface);color:var(--muted);font-family:var(--f-mono);font-weight:500;
         font-size:.67rem;letter-spacing:.08em;text-transform:uppercase;border-bottom:1px solid var(--line)}
tbody td{font-weight:300;color:var(--silver)}
tbody tr:last-child td{border-bottom:0}
td.n,th.n{text-align:right;font-family:var(--f-mono);font-variant-numeric:tabular-nums;white-space:nowrap}
tfoot td{background:var(--surface);font-weight:600;border-top:1px solid var(--line);color:var(--silver)}
td b{color:var(--arc);font-weight:600}

/* ---------- 지표 ---------- */
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:1px;
       background:var(--line-soft);border:1px solid var(--line-soft)}
.stats div{background:var(--ground);padding:15px 16px}
.stats b{display:block;font-family:var(--f-mono);font-size:clamp(1.25rem,2.1vw,1.6rem);font-weight:500;
         color:var(--silver);letter-spacing:-.03em;font-variant-numeric:tabular-nums;line-height:1.15}
.stats span{font-size:.73rem;color:var(--muted);display:block;margin-top:3px}
.stats.gold b{color:var(--arc)}

/* ---------- 칩 ---------- */
.chips{display:flex;flex-wrap:wrap;gap:7px}
.chips span{font-family:var(--f-mono);font-size:.7rem;letter-spacing:.03em;border:1px solid var(--line);
            padding:6px 11px;color:var(--zinc)}

/* ---------- 그림 ---------- */
.fig{margin:0;background:var(--surface)}
.fig img{width:100%}
.fig figcaption{font-size:.75rem;color:var(--dim);padding:9px 2px 0;line-height:1.62}
.fig.plain{background:none}
.fig.pad img{background:#fff;padding:10px}
.figrow{display:grid;gap:clamp(12px,2vw,20px)}
.figrow.c2{grid-template-columns:1fr 1fr}
.figrow.c3{grid-template-columns:repeat(3,1fr)}
.figrow.c4{grid-template-columns:repeat(4,1fr)}
.figrow .fig img{aspect-ratio:4/3;object-fit:cover}
.figrow.free .fig img{aspect-ratio:auto}

/* ---------- 주의 박스 ---------- */
.callout{border:1px solid var(--arc-dim);background:rgba(233,166,63,.07);padding:15px 17px;
         display:flex;flex-direction:column;gap:7px}
.callout-h{font-family:var(--f-mono);font-size:.68rem;letter-spacing:.12em;text-transform:uppercase;
           color:var(--arc);font-weight:500}
.callout p:not(.callout-h){font-size:.85rem;color:var(--muted);font-weight:300;line-height:1.75}

/* ---------- 카드(Home) ---------- */
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(248px,1fr));gap:clamp(12px,1.8vw,18px)}
.card{border:1px solid var(--line);background:var(--surface);display:flex;flex-direction:column;
      transition:border-color .26s ease,transform .26s ease}
.card:hover{border-color:var(--arc);transform:translateY(-3px)}
.card img{aspect-ratio:16/10;object-fit:cover;width:100%}
.card-b{padding:15px 17px 18px;display:flex;flex-direction:column;gap:7px;flex:1}
.card-k{font-family:var(--f-mono);font-size:.63rem;letter-spacing:.13em;color:var(--arc);text-transform:uppercase}
.card-b p:not(.card-k){font-size:.83rem;color:var(--muted);font-weight:300;line-height:1.68}
.card-go{margin-top:auto;padding-top:9px;font-family:var(--f-mono);font-size:.68rem;
         letter-spacing:.07em;color:var(--dim);transition:color .26s ease}
.card:hover .card-go{color:var(--arc)}

/* ---------- 층상 단면도 ---------- */
.stack{display:flex;flex-direction:column;border:1px solid var(--line);background:var(--ground-2)}
.layer{display:grid;grid-template-columns:1fr auto;align-items:center;gap:12px;padding:0 15px;
       position:relative;overflow:hidden;border-bottom:1px solid rgba(13,17,19,.5)}
.layer:last-child{border-bottom:0}
.ln{font-size:.82rem;font-weight:600;position:relative;z-index:2}
.lt{font-family:var(--f-mono);font-size:.7rem;opacity:.9;position:relative;z-index:2;white-space:nowrap}
.l-pad{height:32px;background:#3A4247;color:#CFD7DB}
.l-mortar{height:98px;background:#C9BC9C;color:#3A3222}
.l-water{height:24px;background:#5B87AE;color:#F0F6FA}
.l-steel{height:74px;background:#6E7A82;color:#EDF2F4}
.l-top{height:34px;background:#4E8E99;color:#EAF6F8}
.l-seal{height:28px;background:#8FB9C1;color:#16282C}
.l-spray{height:80px;background:#B4C0C9;color:#1A2226}
.l-prep{height:24px;background:#7C868D;color:#F0F4F6}
.crack{position:absolute;inset:0;z-index:1;opacity:.5;background:
  linear-gradient(196deg,transparent 49.3%,#6B5A38 49.3%,#6B5A38 50.2%,transparent 50.2%) 18% 0/38% 100% no-repeat,
  linear-gradient(168deg,transparent 49.3%,#6B5A38 49.3%,#6B5A38 50.2%,transparent 50.2%) 62% 0/34% 100% no-repeat}
.rustline{position:absolute;left:0;right:0;top:0;height:15px;z-index:1;opacity:.95;
  background:repeating-radial-gradient(circle at 12% 120%,var(--rust) 0 9px,#7A3714 9px 17px,transparent 17px 34px)}
.tooth{position:absolute;left:0;right:0;top:0;height:8px;z-index:1;
  background:repeating-linear-gradient(135deg,#8D9AA4 0 5px,#C6D0D8 5px 10px)}
.anchor{position:absolute;left:0;right:0;top:0;height:7px;z-index:1;
  background:repeating-linear-gradient(135deg,#2E373D 0 4px,#98A2A9 4px 8px)}
.toggle{display:inline-flex;border:1px solid var(--line)}
.toggle button{font-family:var(--f-mono);font-size:.74rem;letter-spacing:.05em;background:none;border:0;
               color:var(--muted);padding:9px 17px;cursor:pointer;transition:background .22s,color .22s}
.toggle button[aria-selected="true"]{background:var(--arc);color:#171003;font-weight:600}

/* ---------- 단면도 2종 (JS 없으면 둘 다 표시) ---------- */
.xsecs{display:grid;gap:24px}
.xs-h{font-size:.92rem;font-weight:600;margin-bottom:10px;color:var(--silver)}
.xsecs.js .xs-h{display:none}

/* ---------- 이온화 경향 ---------- */
.galv{display:flex;gap:3px;margin-top:10px}
.galv span{flex:1;text-align:center;font-family:var(--f-mono);font-size:.74rem;padding:9px 2px;
           background:var(--surface);color:var(--dim);border-bottom:2px solid var(--line)}
.galv span.hit{background:rgba(233,166,63,.13);color:var(--arc);border-bottom-color:var(--arc)}
.galv span.fe{background:rgba(160,74,28,.16);color:#D08A5F;border-bottom-color:var(--rust)}
.galv-cap{display:flex;justify-content:space-between;font-family:var(--f-mono);font-size:.62rem;
          letter-spacing:.08em;color:var(--dim);padding-top:7px}

/* ---------- 연혁 ---------- */
.tl{list-style:none;margin:0;padding:0}
.tl li{display:grid;grid-template-columns:66px 1fr;gap:16px;align-items:baseline;padding:11px 0;
       border-bottom:1px solid var(--line-soft)}
.tl li:first-child{border-top:1px solid var(--line-soft)}
.tl b{font-family:var(--f-mono);font-size:.8rem;font-weight:500;color:var(--arc)}
.tl span{font-size:.89rem;color:var(--silver);font-weight:300}
.tl em{font-style:normal;color:var(--dim);font-size:.77rem;display:block;margin-top:2px}

/* ---------- 연락 ---------- */
.cinfo{list-style:none;margin:0;padding:0}
.cinfo li{display:grid;grid-template-columns:84px 1fr;gap:16px;padding:13px 0;
          border-bottom:1px solid var(--line-soft);align-items:baseline}
.cinfo li:first-child{border-top:1px solid var(--line-soft)}
.cinfo .k{font-family:var(--f-mono);font-size:.67rem;letter-spacing:.1em;color:var(--dim);text-transform:uppercase}
.cinfo .v{font-size:.92rem;color:var(--silver);font-weight:300}
.cinfo .v a:hover{color:var(--arc)}

/* ---------- 푸터 ---------- */
.foot{border-top:1px solid var(--line);background:var(--ground-2);
      padding:clamp(28px,5vh,48px) 0 clamp(22px,4vh,36px);margin-top:clamp(30px,5vh,60px)}
.foot-top{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:clamp(20px,3vw,44px);align-items:start}
.foot h4{font-size:.74rem;font-family:var(--f-mono);letter-spacing:.12em;text-transform:uppercase;
         color:var(--dim);margin-bottom:11px;font-weight:500}
.foot-links{display:flex;flex-direction:column;gap:7px}
.foot-links a{font-size:.84rem;color:var(--muted);transition:color .2s}
.foot-links a:hover{color:var(--arc)}
.foot-c{font-size:.84rem;color:var(--muted);font-weight:300;line-height:1.85}
.foot-c a:hover{color:var(--arc)}
.foot-b{margin-top:clamp(22px,3.5vh,34px);padding-top:15px;border-top:1px solid var(--line-soft);
        display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
        font-family:var(--f-mono);font-size:.65rem;letter-spacing:.05em;color:var(--dim)}

/* ---------- 사진 갤러리 ---------- */
.gal{border:1px solid var(--line);background:var(--ground-2)}
.gal-stage{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line-soft)}
.gal-stage figure{margin:0;background:var(--ground)}
.gal-stage img{width:100%;aspect-ratio:16/10;object-fit:cover}
.gal-stage figcaption{font-size:.75rem;color:var(--dim);padding:8px 12px;line-height:1.6}
/* JS 가 켜지면 한 장씩 넘기는 갤러리로 전환 */
.gal.js .gal-stage{display:block;background:#000}
.gal.js .gal-stage figure{display:none}
.gal.js .gal-stage figure[data-on]{display:block}
.gal.js .gal-stage figcaption{display:none}
.gal-cap{display:flex;justify-content:space-between;align-items:baseline;gap:14px;
         padding:11px 14px;border-top:1px solid var(--line-soft)}
.gal-cap p{font-size:.82rem;color:var(--muted);font-weight:300}
.gal-cap .idx{font-family:var(--f-mono);font-size:.7rem;color:var(--dim);
              font-variant-numeric:tabular-nums;white-space:nowrap}
.gal-bar{display:flex;align-items:center;gap:10px;padding:10px 14px;border-top:1px solid var(--line-soft)}
.gal-bar button{background:none;border:1px solid var(--line);color:var(--silver);
                font-family:var(--f-mono);font-size:.78rem;padding:7px 14px;cursor:pointer;
                transition:border-color .2s,background .2s}
.gal-bar button:hover:not(:disabled){border-color:var(--arc);background:rgba(233,166,63,.08)}
.gal-bar button:disabled{opacity:.35;cursor:default}
.gal-dots{display:flex;gap:5px;flex-wrap:wrap;margin-left:auto}
.gal-dots button{padding:0;width:9px;height:9px;border-radius:50%;border:1px solid var(--dim);
                 background:none}
.gal-dots button[aria-current="true"]{background:var(--arc);border-color:var(--arc)}

/* ---------- 이메일 보호 ---------- */
.mail{font-family:inherit}
.mail .at,.mail .dot{padding:0 1px}

/* ---------- 반응형 ---------- */
@media (max-width:1080px){
  .menu{gap:12px}
  .menu a{font-size:.79rem}
  .navtel{display:none}
}
@media (max-width:860px){
  .split,.split.lean,.split.lean-r{grid-template-columns:1fr;gap:24px}
  .figrow.c3,.figrow.c4{grid-template-columns:1fr 1fr}
  .foot-top{grid-template-columns:1fr;gap:22px}
  .burger{display:block}
  .menu{position:fixed;inset:var(--nav-h) 0 auto 0;background:var(--ground);flex-direction:column;
        align-items:stretch;gap:0;padding:6px var(--pad) 14px;border-bottom:1px solid var(--line);
        overflow:visible;display:none}
  .menu.open{display:flex}
  .menu a{padding:12px 0;border-bottom:1px solid var(--line-soft);font-size:.92rem}
  .menu a::after{display:none}
  .menu a[aria-current="page"]{color:var(--arc)}
}
@media (max-width:560px){
  .figrow.c2,.figrow.c3,.figrow.c4{grid-template-columns:1fr}
  .dl{grid-template-columns:1fr;gap:0}
  .dl dt{padding-bottom:0;border-top:1px solid var(--line-soft)}
  .dl dd{border-top:0;padding-top:3px}
  .tl li{grid-template-columns:54px 1fr;gap:12px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms!important;transition-duration:.001ms!important}
}