/* ==========================================================
   KENTC 한국전기신기술협동조합 — 공통 스타일
   ========================================================== */
:root{
  --navy:#0d2247;
  --navy-2:#143766;
  --blue:#1f6bff;
  --blue-dark:#164fc4;
  --sky:#eaf1ff;
  --red:#c8102e;        /* 로고 워드마크 (밝은 배경용) */
  --red-soft:#ff4b57;   /* 로고 워드마크 (네이비 배경용) */
  --ink:#1a2333;
  --gray:#5c6b82;
  --line:#e3e8f0;
  --bg-soft:#f5f8fc;
  --white:#fff;
  --shadow:0 8px 30px rgba(13,34,71,.10);
  --radius:14px;
  --maxw:1200px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:"Pretendard Variable",Pretendard,-apple-system,BlinkMacSystemFont,"Malgun Gothic",sans-serif;
  color:var(--ink);line-height:1.65;background:var(--white);
  word-break:keep-all;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
.container{max-width:var(--maxw);margin:0 auto;padding:0 20px}
/* 화면에는 안 보이고 스크린리더에만 읽히는 텍스트 */
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* ---------- 헤더 ---------- */
.header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  background:rgba(255,255,255,.92);backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;transition:.25s;
}
.header.scrolled{border-bottom-color:var(--line);box-shadow:0 2px 16px rgba(13,34,71,.06)}
.header-inner{max-width:var(--maxw);margin:0 auto;padding:0 20px;height:74px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.logo{display:flex;align-items:center;flex-shrink:0}
.logo-text{display:flex;flex-direction:column;line-height:1.2}
.logo-text .en{font-size:22px;font-weight:800;color:var(--red);letter-spacing:1px}
.logo-text .ko{font-size:11.5px;color:var(--gray);font-weight:500}
.gnb{display:flex;gap:4px}
.gnb>li{position:relative}
.gnb>li>a{
  display:block;padding:26px 18px;font-size:16.5px;font-weight:600;color:var(--ink);transition:.2s;
}
.gnb>li>a:hover,.gnb>li>a.active{color:var(--blue)}
/* 메뉴 7개 — 좁은 데스크톱에서 헤더가 넘치지 않도록 */
@media(max-width:1280px){.gnb>li>a{padding:26px 12px;font-size:15.5px}.header-inner{gap:14px}}
.gnb .sub{
  position:absolute;top:100%;left:50%;transform:translateX(-50%) translateY(8px);
  min-width:170px;background:var(--white);border:1px solid var(--line);border-radius:12px;
  box-shadow:var(--shadow);padding:8px;opacity:0;visibility:hidden;transition:.2s;
}
.gnb>li:hover .sub{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
.gnb .sub a{display:block;padding:9px 14px;border-radius:8px;font-size:14.5px;color:var(--ink);white-space:nowrap}
.gnb .sub a:hover{background:var(--sky);color:var(--blue)}
.header-cta{display:flex;align-items:center;gap:14px;flex-shrink:0}
.header-tel{display:flex;flex-direction:column;align-items:flex-end;line-height:1.25}
.header-tel .lbl{font-size:11px;color:var(--gray)}
.header-tel .num{font-size:17px;font-weight:800;color:var(--navy)}
.burger{display:none;background:none;border:0;cursor:pointer;padding:8px}
.burger span{display:block;width:24px;height:2.5px;background:var(--navy);margin:5px 0;border-radius:2px;transition:.25s}

/* 모바일 메뉴 */
.mnav{position:fixed;inset:0;z-index:99;background:rgba(13,34,71,.45);opacity:0;visibility:hidden;transition:.25s}
.mnav.open{opacity:1;visibility:visible}
.mnav-panel{position:absolute;top:0;right:0;width:min(320px,85%);height:100%;background:var(--white);padding:90px 24px 24px;overflow-y:auto;transform:translateX(100%);transition:.28s}
.mnav.open .mnav-panel{transform:translateX(0)}
.mnav-panel>ul>li{border-bottom:1px solid var(--line)}
.mnav-panel>ul>li>a{display:block;padding:15px 4px;font-size:17px;font-weight:700}
.mnav-panel .msub a{display:block;padding:9px 16px;font-size:14.5px;color:var(--gray)}
.mnav-tel{margin-top:24px;padding:16px;background:var(--sky);border-radius:12px;text-align:center}
.mnav-tel .num{font-size:20px;font-weight:800;color:var(--navy)}

/* ---------- 공통 섹션 ---------- */
main{padding-top:74px}
.section{padding:90px 0}
.section.soft{background:var(--bg-soft)}
.sec-head{text-align:center;margin-bottom:52px}
.sec-head .eyebrow{display:inline-block;font-size:13.5px;font-weight:700;color:var(--blue);letter-spacing:2px;text-transform:uppercase;margin-bottom:12px}
.sec-head h2{font-size:clamp(26px,3.4vw,38px);font-weight:800;color:var(--navy);line-height:1.3}
.sec-head p{margin-top:14px;color:var(--gray);font-size:16.5px}

/* 페이지 상단 배너 */
.page-hero{
  background:linear-gradient(135deg,var(--navy) 0%,var(--navy-2) 55%,#1d4a8f 100%);
  color:#fff;padding:84px 0 64px;position:relative;overflow:hidden;
}
.page-hero::after{
  content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(31,107,255,.35),transparent 70%);
}
.page-hero h1{font-size:clamp(28px,3.6vw,42px);font-weight:800}
.page-hero p{margin-top:12px;color:#c7d5ee;font-size:17px}
.breadcrumb{margin-top:22px;font-size:13.5px;color:#9fb4d8}
.breadcrumb b{color:#fff;font-weight:600}

/* ---------- 버튼 ---------- */
.btn{display:inline-flex;align-items:center;gap:8px;padding:14px 28px;border-radius:999px;font-size:15.5px;font-weight:700;transition:.2s;cursor:pointer;border:0}
.btn-primary{background:var(--blue);color:#fff}
.btn-primary:hover{background:var(--blue-dark);transform:translateY(-2px);box-shadow:0 10px 24px rgba(31,107,255,.35)}
.btn-outline{border:1.5px solid rgba(255,255,255,.6);color:#fff}
.btn-outline:hover{background:rgba(255,255,255,.12)}
.btn-ghost{border:1.5px solid var(--line);color:var(--navy);background:#fff}
.btn-ghost:hover{border-color:var(--blue);color:var(--blue)}

/* ---------- 카드/그리드 ---------- */
.grid{display:grid;gap:24px}
.grid.c2{grid-template-columns:repeat(2,1fr)}
.grid.c3{grid-template-columns:repeat(3,1fr)}
.grid.c4{grid-template-columns:repeat(4,1fr)}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.25s}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:transparent}
/* 제품 사진은 세로로 긴 배전반이 많아 잘리지 않도록 contain 사용 */
.card .thumb{aspect-ratio:1/1;overflow:hidden;background:var(--bg-soft);display:flex;align-items:center;justify-content:center;padding:16px}
.card .thumb img{width:100%;height:100%;object-fit:contain;transition:.4s}
.card:hover .thumb img{transform:scale(1.05)}
.card .body{padding:22px}
.card .body h3{font-size:18.5px;font-weight:700;color:var(--navy)}
.card .body p{margin-top:8px;font-size:14.5px;color:var(--gray);line-height:1.6}
.card .more{margin-top:14px;font-size:14px;font-weight:700;color:var(--blue);display:inline-flex;align-items:center;gap:6px}

/* ---------- 표 ---------- */
.tbl-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:12px}
table.tbl{width:100%;border-collapse:collapse;font-size:14.5px;min-width:640px}
.tbl th{background:var(--navy);color:#fff;padding:13px 14px;font-weight:600;text-align:left;white-space:nowrap}
.tbl td{padding:12px 14px;border-top:1px solid var(--line);color:var(--ink)}
.tbl tr:nth-child(even) td{background:var(--bg-soft)}
.tbl td.num{text-align:right;font-variant-numeric:tabular-nums}

/* ---------- 스크롤 리빌 ---------- */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .7s ease,transform .7s ease}
.reveal.on{opacity:1;transform:none}
.reveal.d1{transition-delay:.1s}.reveal.d2{transition-delay:.2s}.reveal.d3{transition-delay:.3s}

/* ---------- 푸터 ---------- */
.footer{background:var(--navy);color:#b9c6dd;padding:56px 0 32px;margin-top:0}
.footer-top{display:flex;justify-content:space-between;gap:40px;flex-wrap:wrap;padding-bottom:32px;border-bottom:1px solid rgba(255,255,255,.12)}
.footer .f-logo{color:var(--red-soft);font-size:22px;font-weight:800;letter-spacing:1px}
.footer .f-logo small{display:block;font-size:12.5px;font-weight:500;color:#8fa5c9;margin-top:4px}
.footer address{font-style:normal;font-size:14px;line-height:2;margin-top:16px}
.footer address b{color:#dfe8f6;font-weight:600}
.f-links{display:flex;gap:56px;flex-wrap:wrap}
.f-links h4{color:#fff;font-size:14.5px;font-weight:700;margin-bottom:14px}
.f-links a{display:block;font-size:13.5px;padding:4px 0;color:#9db1d4}
.f-links a:hover{color:#fff}
.footer-bottom{padding-top:24px;font-size:12.5px;color:#7e93b8;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}

/* 플로팅 버튼 */
.quick-float{position:fixed;right:22px;bottom:22px;z-index:90;display:flex;flex-direction:column;gap:10px}
.quick-float a{width:54px;height:54px;border-radius:50%;display:flex;align-items:center;justify-content:center;background:var(--blue);color:#fff;box-shadow:0 8px 20px rgba(31,107,255,.4);transition:.2s;font-size:22px}
.quick-float a.top{background:var(--navy)}
.quick-float a:hover{transform:translateY(-3px)}

/* ---------- 반응형 ---------- */
@media(max-width:1024px){
  .gnb{display:none}
  .header-tel{display:none}
  .burger{display:block}
  .grid.c4{grid-template-columns:repeat(2,1fr)}
  .grid.c3{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:640px){
  .section{padding:64px 0}
  .grid.c2,.grid.c3,.grid.c4{grid-template-columns:1fr}
  .header-inner{height:64px}
  main{padding-top:64px}
  .page-hero{padding:64px 0 48px}
}