/* 방향: 설치 기사 현장 감각. 사진 대신 굵은 활자와 표(取扱 항목표)로 말한다.
   파랑 단색 히어로 + 흰 본문 + 진한 먹색. 카드·아이콘 타일·이모지 없음. 주황은 전화 버튼 하나에만 */
:root{--blue:#1f5fe0;--navy:#0b1f4d;--ink:#101418;--sub:#444c5a;--mut:#5c6574;--line:#d9dee7;--bg:#f3f5f8;--call:#c2410c;--w:1160px}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:#fff;color:var(--ink);font-family:"Pretendard Variable",Pretendard,-apple-system,"Segoe UI","Noto Sans KR",sans-serif;font-size:17px;line-height:1.65;letter-spacing:-.012em;word-break:keep-all;overflow-wrap:break-word;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
.w{max-width:var(--w);margin:0 auto;padding-inline:28px}
header{position:sticky;top:0;z-index:20;background:#fff;border-bottom:2px solid var(--ink)}
.nav{display:flex;align-items:center;gap:40px;height:64px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:22px;letter-spacing:-.04em}
.logo img{width:34px;height:34px}
.menu{display:flex;gap:30px;font-weight:600;font-size:16px;color:var(--sub)}
.menu a:hover{color:var(--blue)}
.call{margin-left:auto;font-weight:800;font-size:19px;color:var(--ink);letter-spacing:-.02em}
.call small{font-weight:600;font-size:13px;color:var(--mut);margin-right:8px}
/* 히어로 */
.hero{background:var(--blue);color:#fff}
.hero .w{padding-block:84px 0}
.hero h1{font-size:clamp(38px,5.6vw,68px);line-height:1.15;font-weight:800;letter-spacing:-.045em;margin:0 0 24px;max-width:13em}
.hero p{font-size:20px;line-height:1.6;max-width:30em;margin:0 0 36px;color:#fff;opacity:.95}
.big{display:flex;align-items:center;gap:20px;flex-wrap:wrap;margin-bottom:64px}
.big a.tel{background:#fff;color:var(--navy);font-weight:800;font-size:clamp(26px,3.4vw,40px);letter-spacing:-.03em;padding:16px 30px;border-radius:6px}
.big span{font-size:16px;opacity:.9}
.facts{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid rgba(255,255,255,.45)}
.facts div{padding:22px 24px 26px 0;font-size:16px}
.facts div+div{padding-left:24px;border-left:1px solid rgba(255,255,255,.45)}
.facts b{display:block;font-size:19px;margin-bottom:2px}
/* 표 */
section{padding-block:84px}
.h{margin-bottom:36px}
.h h2{font-size:clamp(28px,3.4vw,42px);font-weight:800;letter-spacing:-.04em;margin:0 0 8px;line-height:1.25}
.h p{margin:0;color:var(--sub);font-size:18px}
.tbl{border-top:2px solid var(--ink)}
.row{display:grid;grid-template-columns:200px 1fr 1.25fr 120px;gap:24px;padding:26px 4px;border-bottom:1px solid var(--line);align-items:start}
.row h3{margin:0;font-size:24px;font-weight:800;letter-spacing:-.04em;line-height:1.3}
.row .who{margin:4px 0 0;font-size:14.5px;font-weight:700;color:var(--blue)}
.row .d{margin:0;color:var(--sub)}
.row ul{margin:0;padding-left:18px;color:var(--sub);font-size:16px}
.row li{margin-bottom:3px}
.row a.go{justify-self:end;font-weight:800;color:var(--blue);border-bottom:2px solid var(--blue);padding-bottom:1px;white-space:nowrap}
.brands{margin-top:28px;color:var(--mut);font-size:15px}
.brands b{color:var(--ink)}
/* 진행 */
.gray{background:var(--bg)}
.flow{display:grid;grid-template-columns:repeat(4,1fr);position:relative}
.flow:before{content:"";position:absolute;left:0;right:0;top:11px;height:2px;background:var(--ink)}
.flow div{position:relative;padding:44px 20px 0 0}
.flow div:before{content:"";position:absolute;top:2px;left:0;width:20px;height:20px;border-radius:50%;background:var(--blue);border:4px solid var(--bg);box-sizing:content-box;margin:-4px}
.flow b{display:block;font-size:21px;letter-spacing:-.03em;margin-bottom:4px}
.flow p{margin:0;color:var(--sub);font-size:16px}
/* FAQ */
.faq{border-top:2px solid var(--ink)}
details{border-bottom:1px solid var(--line)}
summary{cursor:pointer;font-weight:700;font-size:19px;padding:22px 4px;list-style:none;display:flex;justify-content:space-between;gap:12px}
summary::-webkit-details-marker{display:none}
summary:after{content:"+";font-size:26px;line-height:1;font-weight:400}
details[open] summary:after{content:"−"}
details p{margin:0 0 22px;color:var(--sub);padding-inline:4px;max-width:46em}
/* 하단 */
.end{background:var(--navy);color:#fff;padding-block:72px}
.end .w{display:flex;justify-content:space-between;align-items:center;gap:28px;flex-wrap:wrap}
.end h2{font-size:clamp(28px,3.4vw,42px);font-weight:800;letter-spacing:-.04em;margin:0 0 6px}
.end p{margin:0;font-size:18px;color:#dbe4fb}
.end a.tel{background:var(--call);color:#fff;font-weight:800;font-size:28px;letter-spacing:-.03em;padding:18px 34px;border-radius:6px}
footer{background:#0a1226;color:#b4bdcf;padding-block:36px;font-size:14.5px;line-height:1.85}
footer b{color:#fff}
.offer{display:grid;grid-template-columns:repeat(3,1fr);border:2px solid var(--ink);margin:0 0 8px}
.offer div{padding:26px 24px}
.offer div+div{border-left:1px solid var(--line)}
.offer small{display:block;font-weight:700;color:var(--blue);font-size:14px;margin-bottom:4px}
.offer b{display:block;font-size:26px;letter-spacing:-.04em;line-height:1.3;margin-bottom:6px}
.offer span{color:var(--sub);font-size:16px}
.note{font-size:14.5px;color:var(--mut);margin:0}
@media(max-width:900px){.offer{grid-template-columns:1fr}.offer div+div{border-left:0;border-top:1px solid var(--line)}}
.gl{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(2,1fr);gap:0 40px;border-top:2px solid var(--ink)}
.gl a{display:flex;justify-content:space-between;gap:16px;align-items:baseline;padding:18px 4px;border-bottom:1px solid var(--line)}
.gl a:hover b{color:var(--blue)}
.gl b{font-size:19px;letter-spacing:-.03em}
.gl span{color:var(--mut);font-size:15px;text-align:right}
@media(max-width:900px){.gl{grid-template-columns:1fr}}
.sets{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin:26px 0 8px}
.set{margin:0;border:1px solid var(--line);display:grid;grid-template-columns:44% 1fr;align-items:stretch}
.set img{display:block;width:100%;height:auto;aspect-ratio:1;align-self:start}
.set figcaption{padding:18px 18px 16px;display:flex;flex-direction:column;gap:4px}
.set b{font-size:20px;letter-spacing:-.03em}
.set em{font-style:normal;font-weight:700;color:var(--blue);font-size:15px}
.set ul{margin:8px 0 0;padding-left:18px;color:var(--sub);font-size:15.5px}
.set li{margin-bottom:2px}
.set small{margin-top:auto;padding-top:10px;color:var(--mut);font-size:12.5px}
@media(max-width:900px){.sets{grid-template-columns:1fr}}
@media(max-width:480px){.set{grid-template-columns:1fr}.set img{height:auto}}
.dock{display:none}
@media(max-width:900px){
  .menu{display:none}
  .row{grid-template-columns:1fr;gap:10px}
  .row a.go{justify-self:start}
  .flow{grid-template-columns:1fr 1fr;row-gap:28px}
  .flow:before{display:none}
  .facts{grid-template-columns:1fr}
  .facts div+div{padding-left:0;border-left:0;border-top:1px solid rgba(255,255,255,.45)}
}
@media(max-width:620px){
  body{font-size:16px;padding-bottom:68px}
  .w{padding-inline:20px}
  .nav{height:56px}
  .call small{display:none}
  .hero .w{padding-top:52px}
  .big{margin-bottom:44px}
  section{padding-block:56px}
  .flow{grid-template-columns:1fr}
  .end{padding-block:48px}
  .end a.tel{width:100%;text-align:center}
  .dock{display:block;position:fixed;left:0;right:0;bottom:0;z-index:30;background:#fff;border-top:2px solid var(--ink);padding:10px 14px calc(10px + env(safe-area-inset-bottom,0px))}
  .dock a{display:block;text-align:center;background:var(--call);color:#fff;font-weight:800;font-size:19px;padding:14px;border-radius:6px}
}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
a:focus-visible,summary:focus-visible{outline:3px solid var(--call);outline-offset:2px}

.sets{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin:26px 0 8px}
.set{margin:0;border:1px solid var(--line);display:grid;grid-template-columns:44% 1fr;align-items:stretch}
.set img{display:block;width:100%;height:auto;aspect-ratio:1;align-self:start}
.set figcaption{padding:18px 18px 16px;display:flex;flex-direction:column;gap:4px}
.set b{font-size:20px;letter-spacing:-.03em}
.set em{font-style:normal;font-weight:700;color:var(--blue);font-size:15px}
.set ul{margin:8px 0 0;padding-left:18px;color:var(--sub);font-size:15.5px}
.set li{margin-bottom:2px}
.set small{margin-top:auto;padding-top:10px;color:var(--mut);font-size:12.5px}
@media(max-width:900px){.sets{grid-template-columns:1fr}}
@media(max-width:480px){.set{grid-template-columns:1fr}.set img{height:auto}}

.fig{margin:28px 0}.fig img{display:block;width:100%;max-width:520px;height:auto;border:1px solid var(--line)}.fig figcaption{font-size:14px;color:var(--mut);margin-top:8px}

.crumb{font-size:14px;color:var(--mut);padding-block:18px 0}
.crumb a{color:var(--mut)}
.pg-h1{font-size:clamp(30px,4.4vw,52px);line-height:1.2;font-weight:800;letter-spacing:-.045em;margin:12px 0 14px}
.offer{display:grid;grid-template-columns:repeat(3,1fr);border:2px solid var(--ink);margin:28px 0 8px}
.offer div{padding:24px 22px}
.offer div+div{border-left:1px solid var(--line)}
.offer small{display:block;font-weight:700;color:var(--blue);font-size:14px;margin-bottom:4px}
.offer b{display:block;font-size:24px;letter-spacing:-.04em;line-height:1.3;margin-bottom:6px}
.offer span{color:var(--sub);font-size:15.5px}
.note{font-size:14.5px;color:var(--mut);margin:0 0 6px}
.cols{display:grid;grid-template-columns:1fr 1fr;gap:48px}
.prose p{margin:0 0 16px;color:var(--sub);max-width:44em}
.prose h2{font-size:26px;letter-spacing:-.04em;margin:44px 0 14px;line-height:1.3}
.list{list-style:none;margin:0;padding:0;border-top:1px solid var(--line)}
.list li{padding:13px 4px;border-bottom:1px solid var(--line)}
.list a{font-weight:600}
.list a:hover{color:var(--blue)}
.tags{display:flex;flex-wrap:wrap;gap:8px;margin:0;padding:0;list-style:none}
.tags a{display:block;border:1px solid var(--line);padding:8px 14px;font-weight:600;font-size:15px}
.tags a:hover{border-color:var(--blue);color:var(--blue)}
.ctaline{background:var(--navy);color:#fff;padding:36px 0}
.ctaline .w{display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap}
.ctaline b{font-size:22px;letter-spacing:-.03em}
.ctaline a.tel{background:var(--call);color:#fff;font-weight:800;font-size:26px;padding:14px 30px;border-radius:6px}
@media(max-width:900px){.offer{grid-template-columns:1fr}.offer div+div{border-left:0;border-top:1px solid var(--line)}.cols{grid-template-columns:1fr}}