/* Layout: 시공 도면(drawing sheet) — 넓은 현장 사진 + 치수선·표제란 같은 도면 관례로 정보 구획 */
:root{
  --paper:#F3F4F5;      /* 콘크리트 톤 바탕 */
  --sheet:#FFFFFF;      /* 카드·도면지 */
  --ink:#1F2740;        /* 로고 네이비 */
  --ink-2:#4A5268;      /* 본문 보조 */
  --line:#CDD2D9;       /* 도면 선 */
  --level:#D9A21B;      /* 레벨기·안전 노랑 (선/마커 전용) */
  --level-ink:#7D5A00;  /* 노랑 계열 텍스트 */
  --hero-ink:#FFFFFF;
  --band:#1F2740;       /* 견적 문의 띠 */
  --band-fg:#F3F4F5;
  --f-display:"Hahmlet","Noto Serif KR",serif;
  --f-body:"IBM Plex Sans KR","Apple SD Gothic Neo","Malgun Gothic",sans-serif;
  --f-mono:"IBM Plex Mono",ui-monospace,Consolas,monospace;
  --wrap:1180px;
  --gut:clamp(16px,4vw,40px);
}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]){
  --paper:#12161F;--sheet:#1A2030;--ink:#E7EAF1;--ink-2:#A9B0C1;--line:#2E364A;
  --level:#E8B43A;--level-ink:#F0C661;--band:#0B0E15;--band-fg:#E7EAF1;color-scheme:dark}}
:root[data-theme="dark"]{
  --paper:#12161F;--sheet:#1A2030;--ink:#E7EAF1;--ink-2:#A9B0C1;--line:#2E364A;
  --level:#E8B43A;--level-ink:#F0C661;--band:#0B0E15;--band-fg:#E7EAF1;color-scheme:dark}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion: reduce){html{scroll-behavior:auto}*{transition:none!important;animation:none!important}}
body{background:var(--paper);color:var(--ink);font-family:var(--f-body);font-size:16px;line-height:1.7;word-break:keep-all;overflow-wrap:break-word}
a{color:inherit}
:focus-visible{outline:2px solid var(--level);outline-offset:3px}
.wrap{max-width:var(--wrap);margin-inline:auto;padding-inline:var(--gut)}
h1,h2,h3{text-wrap:balance;margin:0;line-height:1.3}
p{margin:0}
.label{font-family:var(--f-mono);font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-2)}

/* header */
.top{position:sticky;top:env(safe-area-inset-top,0px);z-index:20;background:color-mix(in srgb,var(--paper) 92%,transparent);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.top .wrap{display:flex;align-items:center;gap:24px;min-height:64px}
.brand{display:flex;align-items:center}
.brand img{height:22px;width:auto;display:block}
.brand .lw{display:none}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]) .brand .ln{display:none}:root:not([data-theme="light"]) .brand .lw{display:block}}
:root[data-theme="dark"] .brand .ln{display:none}:root[data-theme="dark"] .brand .lw{display:block}
.nav{display:flex;gap:22px;margin-left:auto;font-size:15px}
.nav a{text-decoration:none;color:var(--ink-2)}
.nav a:hover{color:var(--ink)}
.callbtn{display:inline-flex;align-items:center;gap:8px;padding:9px 16px;border:1px solid var(--ink);border-radius:4px;text-decoration:none;font-weight:600;font-size:15px;font-variant-numeric:tabular-nums;white-space:nowrap}
.callbtn:hover{background:var(--ink);color:var(--paper)}
@media (max-width:860px){.nav{display:none}.callbtn{margin-left:auto}}

/* hero */
.hero{position:relative;color:var(--hero-ink);background:#1F2740 url("img/steel-frame.jpg") center 40%/cover no-repeat}
.hero::before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(17,22,36,.86) 0%,rgba(17,22,36,.7) 45%,rgba(17,22,36,.3) 100%)}
@media (max-width:700px){.hero::before{background:rgba(17,22,36,.74)}}
.hero .wrap{position:relative;padding-block:clamp(72px,12vw,140px) clamp(56px,8vw,96px)}
.hero .label{color:#E8ECF4}
.hero h1{font-family:var(--f-display);font-weight:700;font-size:clamp(32px,5.2vw,58px);letter-spacing:-.01em;margin-top:18px;max-width:15em}
.hero p.lead{margin-top:20px;font-size:clamp(16px,1.6vw,19px);max-width:36em;color:#EEF1F6}
.cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 22px;border-radius:4px;font-weight:600;font-size:16px;text-decoration:none;border:1px solid transparent;cursor:pointer;font-family:inherit}
.btn-level{background:#E8B43A;color:#1B1A14}
.btn-level:hover{background:#F2C661}
.btn-ghost{border-color:rgba(255,255,255,.7);color:#fff;font-variant-numeric:tabular-nums}
.btn-ghost:hover{background:rgba(255,255,255,.12)}
/* 치수선 캡션 */
.dim{position:relative;margin-top:56px;max-width:420px;font-family:var(--f-mono);font-size:12px;color:#DDE2EC;padding-top:14px}
.dim::before{content:"";position:absolute;left:0;right:0;top:4px;border-top:1px solid rgba(255,255,255,.6)}
.dim::after{content:"";position:absolute;left:0;right:0;top:0;height:9px;border-left:1px solid rgba(255,255,255,.6);border-right:1px solid rgba(255,255,255,.6)}

/* license strip */
.strip{border-bottom:1px solid var(--line);background:var(--sheet)}
.strip .wrap{display:flex;flex-wrap:wrap;gap:12px 36px;padding-block:18px;align-items:center}
.lic{display:flex;align-items:baseline;gap:10px;font-size:15px}
.lic b{font-weight:600}
.lic .label{font-size:11px}

section{padding-block:clamp(64px,9vw,112px)}
.sec-head{display:grid;gap:12px;margin-bottom:44px;max-width:720px}
.sec-head h2{font-family:var(--f-display);font-weight:700;font-size:clamp(26px,3.4vw,38px)}
.sec-head p{color:var(--ink-2)}

/* services */
.svc{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,420px),1fr));gap:24px}
.svc article{background:var(--sheet);border:1px solid var(--line);border-radius:6px;padding:32px;display:grid;gap:18px;align-content:start;min-width:0}
.svc .code{display:flex;justify-content:space-between;align-items:baseline;border-bottom:1px solid var(--line);padding-bottom:14px}
.svc h3{font-size:22px;font-weight:700}
.svc ul{list-style:none;margin:0;padding:0;display:grid;gap:12px}
.svc li{display:grid;grid-template-columns:14px 1fr;gap:12px;align-items:start}
.svc li::before{content:"";width:8px;height:8px;margin-top:9px;background:var(--level)}
.svc li b{display:block;font-weight:600}
.svc li span{color:var(--ink-2);font-size:15px}
.svc .area{font-size:14px;color:var(--ink-2);border-top:1px dashed var(--line);padding-top:14px}

/* reasons */
.why{background:var(--sheet);border-block:1px solid var(--line)}
.reasons{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,300px),1fr));gap:40px}
.reasons div{display:grid;gap:10px;align-content:start;border-top:2px solid var(--ink);padding-top:20px;min-width:0}
.reasons h3{font-size:19px;font-weight:700}
.reasons p{color:var(--ink-2);font-size:15.5px}
.note{margin-top:44px;font-size:14px;color:var(--ink-2);border-left:3px solid var(--level);padding:4px 0 4px 16px;max-width:760px}

/* process photos */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;counter-reset:s}
@media (max-width:980px){.steps{grid-template-columns:repeat(2,1fr)}}
@media (max-width:520px){.steps{grid-template-columns:1fr}}
.steps figure{margin:0;display:grid;gap:12px;align-content:start;min-width:0}
.steps .ph{position:relative;aspect-ratio:4/3;max-width:100%;overflow:hidden;border-radius:4px;background:var(--line)}
.steps img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .5s ease}
.steps figure:hover img{transform:scale(1.03)}
.steps .no{position:absolute;left:10px;top:10px;font-family:var(--f-mono);font-size:12px;background:var(--ink);color:var(--paper);padding:3px 8px;border-radius:2px}
.steps figcaption b{display:block;font-weight:600;font-size:17px}
.steps figcaption span{color:var(--ink-2);font-size:14.5px}

/* flow */
.flow{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(5,1fr);gap:0;border:1px solid var(--line);border-radius:6px;background:var(--sheet);overflow:hidden}
@media (max-width:900px){.flow{grid-template-columns:1fr}}
.flow li{padding:24px 22px;display:grid;gap:8px;align-content:start;border-right:1px solid var(--line);min-width:0}
.flow li:last-child{border-right:0}
@media (max-width:900px){.flow li{border-right:0;border-bottom:1px solid var(--line);grid-template-columns:64px 1fr;column-gap:12px}.flow li:last-child{border-bottom:0}.flow li .label{grid-row:span 2}}
.flow b{font-weight:600;font-size:16.5px}
.flow span{font-size:14.5px;color:var(--ink-2)}

/* region */
.region{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.2fr);gap:48px;align-items:start}
@media (max-width:860px){.region{grid-template-columns:1fr}}
.areas{display:grid;gap:0;border-top:1px solid var(--line)}
.areas div{display:grid;grid-template-columns:120px 1fr;gap:16px;padding:16px 0;border-bottom:1px solid var(--line)}
.areas dt{font-weight:600}
.areas dd{margin:0;color:var(--ink-2)}
.region .side{min-width:0}

/* quote form */
.quote{background:var(--band);color:var(--band-fg)}
.quote .sec-head p,.quote .label{color:color-mix(in srgb,var(--band-fg) 75%,transparent)}
.qgrid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.5fr);gap:48px;align-items:start}
@media (max-width:900px){.qgrid{grid-template-columns:1fr}}
.direct{display:grid;gap:22px}
.direct .num{font-family:var(--f-mono);font-size:clamp(26px,3vw,34px);font-weight:500;font-variant-numeric:tabular-nums;letter-spacing:.02em;user-select:all}
.direct .row{display:flex;flex-wrap:wrap;gap:10px}
.smallbtn{padding:9px 14px;border-radius:4px;border:1px solid color-mix(in srgb,var(--band-fg) 50%,transparent);background:transparent;color:var(--band-fg);font:inherit;font-size:14px;cursor:pointer;text-decoration:none}
.smallbtn:hover{background:color-mix(in srgb,var(--band-fg) 12%,transparent)}
form.qf{background:var(--sheet);color:var(--ink);border-radius:6px;padding:clamp(20px,3vw,32px);display:grid;grid-template-columns:1fr 1fr;gap:16px 18px}
@media (max-width:560px){form.qf{grid-template-columns:1fr}}
.fld{display:grid;gap:6px;min-width:0}
.fld.full{grid-column:1/-1}
.fld label{font-size:14px;font-weight:600}
.fld label i{font-style:normal;color:var(--level-ink);margin-left:4px}
.fld input,.fld select,.fld textarea{width:100%;font:inherit;font-size:16px;color:var(--ink);background:var(--paper);border:1px solid var(--line);border-radius:4px;padding:11px 12px}
.fld textarea{min-height:110px;resize:vertical}
.fld input:focus,.fld select:focus,.fld textarea:focus{outline:2px solid var(--level);outline-offset:0;border-color:transparent}
.agree{grid-column:1/-1;display:grid;gap:8px;font-size:14px}
.agree label{display:flex;gap:10px;align-items:flex-start}
.agree input{margin-top:5px;width:18px;height:18px;flex:none}
.agree details{color:var(--ink-2);font-size:13px}
.agree summary{cursor:pointer}
.err{grid-column:1/-1;color:#C2410C;font-size:14px}
.qf .btn{grid-column:1/-1;background:var(--ink);color:var(--paper)}
.qf .btn:hover{opacity:.9}
.result{grid-column:1/-1;border:1px dashed var(--line);border-radius:4px;padding:16px;display:grid;gap:12px;background:var(--paper)}
.result pre{margin:0;white-space:pre-wrap;font-family:var(--f-body);font-size:14.5px;max-height:260px;overflow:auto}
.result .row{display:flex;flex-wrap:wrap;gap:10px}
.result .smallbtn{color:var(--ink);border-color:var(--line)}
.result .smallbtn:hover{background:var(--sheet)}

/* title block footer (도면 표제란) */
footer{padding-block:48px 120px}
.tb{display:grid;grid-template-columns:1.2fr repeat(3,1fr);border:1px solid var(--ink);font-size:14px}
@media (max-width:860px){.tb{grid-template-columns:1fr 1fr}}
@media (max-width:480px){.tb{grid-template-columns:1fr}}
.tb>div{padding:14px 16px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);display:grid;gap:4px;min-width:0}
.tb .logo-cell{grid-row:span 2;display:grid;align-content:center;gap:12px}
@media (max-width:860px){.tb .logo-cell{grid-row:auto;grid-column:1/-1}}
.tb .logo-cell img{height:20px;width:auto}
.tb .addr{grid-column:span 2}
@media (max-width:480px){.tb .addr{grid-column:auto}}
.tb dd{margin:0;font-variant-numeric:tabular-nums}
.copy{margin-top:16px;font-size:12.5px;color:var(--ink-2)}

/* mobile bottom bar */
.mbar{display:none}
@media (max-width:860px){
  .mbar{display:grid;grid-template-columns:1fr 1fr;position:fixed;left:0;right:0;bottom:0;z-index:30;background:var(--band);padding-bottom:env(safe-area-inset-bottom,0px)}
  .mbar a{display:flex;align-items:center;justify-content:center;gap:8px;padding:15px 8px;color:var(--band-fg);text-decoration:none;font-weight:600;font-size:15px}
  .mbar a+a{background:#E8B43A;color:#1B1A14}
}

/* ===== 모바일 UI ===== */
section[id]{scroll-margin-top:72px}
.menubtn{display:none}
.mnav{display:none}
.swipe-hint,.dots{display:none}
@media (max-width:860px){
  .top .wrap{min-height:58px;gap:12px}
  .brand img{height:19px}
  .callbtn{display:none}
  .menubtn{display:inline-grid;place-content:center;gap:5px;margin-left:auto;width:44px;height:44px;border:0;background:transparent;color:var(--ink);cursor:pointer;border-radius:6px}
  .menubtn span{display:block;width:22px;height:2px;background:currentColor;transition:transform .2s ease,opacity .2s ease}
  .menubtn[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .menubtn[aria-expanded="true"] span:nth-child(2){opacity:0}
  .menubtn[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
  .mnav{display:grid;padding:4px var(--gut) 16px;border-top:1px solid var(--line);background:var(--paper)}
  .mnav a{display:flex;align-items:center;min-height:52px;padding-inline:4px;text-decoration:none;font-size:17px;font-weight:500;border-bottom:1px solid var(--line)}
  .mnav a.mnav-call{border-bottom:0;margin-top:12px;justify-content:center;background:var(--band);color:var(--band-fg);border-radius:6px;font-weight:600;font-variant-numeric:tabular-nums}

  section{padding-block:56px}
  .sec-head{margin-bottom:28px}
  .hero .wrap{padding-block:56px 40px}
  .hero h1{margin-top:12px}
  .hero p.lead{font-size:16px;margin-top:16px}
  .cta{display:grid;grid-template-columns:1fr;gap:10px;margin-top:26px}
  .cta .btn{min-height:52px}
  .dim{margin-top:36px}

  .strip .wrap{display:grid;grid-template-columns:1fr 1fr;gap:10px 16px;padding-block:16px;align-items:start}
  .lic{flex-direction:column;gap:2px}
  .lic-biz{grid-column:1/-1;flex-direction:row;gap:10px;align-items:baseline;border-top:1px solid var(--line);padding-top:10px}

  .svc{gap:16px}
  .svc article{padding:22px 20px}
  .svc h3{font-size:20px}

  .reasons{gap:28px}

  /* 현장 기록: 가로 스와이프 */
  .swipe-hint{display:block;font-family:var(--f-mono);font-size:12px;color:var(--level-ink)}
  .steps{display:grid;grid-template-columns:none;grid-auto-flow:column;grid-auto-columns:82%;gap:14px;overflow-x:auto;scroll-snap-type:x mandatory;margin-inline:calc(var(--gut) * -1);padding-inline:var(--gut);scroll-padding-inline:var(--gut);padding-bottom:6px;scrollbar-width:none;-webkit-overflow-scrolling:touch}
  .steps::-webkit-scrollbar{display:none}
  .steps figure{scroll-snap-align:start}
  .dots{display:flex;justify-content:center;gap:8px;margin-top:16px}
  .dots i{width:8px;height:8px;border-radius:50%;background:var(--line);transition:background .2s,width .2s}
  .dots i.on{width:22px;border-radius:4px;background:var(--ink)}

  .areas div{grid-template-columns:96px 1fr;gap:12px}

  .direct .num{font-size:28px}
  .smallbtn{min-height:44px;padding:10px 16px;font-size:15px}
  form.qf{gap:14px}
  .fld input,.fld select,.fld textarea{min-height:48px}
  .agree label{min-height:44px;align-items:center}
  .agree input{margin-top:0;width:22px;height:22px}
  .qf .btn{min-height:54px;font-size:17px}

  footer{padding-block:40px 110px}
  .mbar{transition:transform .25s ease}
  .mbar.away{transform:translateY(110%)}
  .mbar a{min-height:56px}
}
@media (max-width:380px){.steps{grid-auto-columns:88%}.hero h1{font-size:29px}}

/* ===== 다중 페이지 공통 ===== */
.svc-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(100%,300px),1fr));gap:16px}
.svc-card{display:grid;gap:8px;align-content:start;background:var(--sheet);border:1px solid var(--line);border-radius:6px;padding:22px 22px 20px;text-decoration:none;color:inherit;min-width:0;transition:border-color .2s ease,transform .2s ease}
.svc-card:hover{border-color:var(--ink);transform:translateY(-2px)}
.svc-card h3{font-size:18px;font-weight:700;display:flex;justify-content:space-between;gap:8px;align-items:baseline}
.svc-card h3::after{content:"→";font-weight:400;color:var(--level-ink)}
.svc-card p{color:var(--ink-2);font-size:15px}
.scope-note{margin-top:22px;font-size:14px;color:var(--ink-2);border-left:3px solid var(--level);padding:2px 0 2px 14px;max-width:760px}

.areas a{text-decoration:none;font-weight:600}
.areas a:hover{text-decoration:underline}
.areas dd a{font-weight:500;color:var(--ink)}

.crumb{font-size:13px;color:var(--ink-2);display:flex;flex-wrap:wrap;gap:6px;margin-bottom:14px}
.crumb a{color:var(--ink-2)}
.page-hero{background:var(--sheet);border-bottom:1px solid var(--line)}
.page-hero .wrap{padding-block:clamp(40px,6vw,72px)}
.page-hero h1{font-family:var(--f-display);font-weight:700;font-size:clamp(28px,4vw,44px);margin-top:10px;max-width:20em}
.page-hero .lead2{margin-top:16px;color:var(--ink-2);font-size:17px;max-width:44em}
.page-hero .cta{margin-top:24px}
.page-hero .btn-ink{background:var(--ink);color:var(--paper)}
.page-hero .btn-line{border-color:var(--ink);color:var(--ink);font-variant-numeric:tabular-nums}

.prose{max-width:760px;display:grid;gap:14px}
.prose h2{font-family:var(--f-display);font-weight:700;font-size:clamp(22px,2.6vw,28px);margin-top:28px}
.prose h2:first-child{margin-top:0}
.prose h3{font-size:18px;font-weight:700;margin-top:10px}
.prose p,.prose li{color:var(--ink-2)}
.prose ul{margin:0;padding-left:20px;display:grid;gap:6px}
.prose strong{color:var(--ink)}
.prose .box{background:var(--sheet);border:1px solid var(--line);border-radius:6px;padding:18px 20px}
.prose ul.tags,.tags{display:flex;flex-wrap:wrap;gap:8px;list-style:none;padding:0!important}
.tags li{border:1px solid var(--line);border-radius:999px;padding:5px 12px;font-size:14px;background:var(--sheet);color:var(--ink)}

.linkgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(100%,220px),1fr));gap:10px}
.linkgrid a{display:block;padding:14px 16px;border:1px solid var(--line);border-radius:6px;background:var(--sheet);text-decoration:none;font-weight:600}
.linkgrid a:hover{border-color:var(--ink)}
.linkgrid a span{display:block;font-weight:400;font-size:13.5px;color:var(--ink-2);margin-top:2px}

.faq{display:grid;gap:10px;max-width:820px}
.faq details{background:var(--sheet);border:1px solid var(--line);border-radius:6px;padding:16px 18px}
.faq summary{cursor:pointer;font-weight:600;font-size:16.5px;list-style:none;display:flex;justify-content:space-between;gap:12px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--level-ink);font-weight:400}
.faq details[open] summary::after{content:"–"}
.faq details p{margin-top:10px;color:var(--ink-2)}

.cta-band{background:var(--band);color:var(--band-fg)}
.cta-band .wrap{padding-block:clamp(40px,6vw,64px);display:flex;flex-wrap:wrap;gap:20px 40px;align-items:center;justify-content:space-between}
.cta-band h2{font-family:var(--f-display);font-weight:700;font-size:clamp(22px,2.8vw,30px)}
.cta-band p{color:color-mix(in srgb,var(--band-fg) 75%,transparent);margin-top:6px}
.cta-band .cta{margin-top:0}
.cta-band .num{font-family:var(--f-mono);font-variant-numeric:tabular-nums}
.btn-kakao{background:#FEE500;color:#191600}
.btn-kakao:hover{background:#FFEB3B}
.foot-links{display:flex;flex-wrap:wrap;gap:6px 16px;margin-top:14px;font-size:13px}
.foot-links a{color:var(--ink-2)}
.foot-links b{color:var(--ink);font-weight:600}
@media (max-width:860px){
  .page-hero .cta{display:grid;grid-template-columns:1fr}
  .cta-band .cta{display:grid;grid-template-columns:1fr;width:100%}
}