/* G&S간판(GNS SIGN) — bannerpro.gnssign.com 공통 스타일 */
:root{
  --navy:#23262b;
  --navy-2:#363b42;
  --blue:#2563eb;
  --steel:#64748b;
  --steel-light:#94a3b8;
  --bg:#f7f9fc;
  --white:#fff;
  --border:#e2e8f0;
  --safety:#dc2626;
  --text:#1e293b;
  --text-light:#475569;
  --radius:12px;
  --shadow:0 4px 16px rgba(35,38,43,.10);
}
*{box-sizing:border-box}
.reveal{opacity:0;transform:translateY(28px);transition:opacity .7s ease,transform .7s ease}
.reveal.is-visible{opacity:1;transform:translateY(0)}
@media (prefers-reduced-motion: reduce){
  .reveal{opacity:1;transform:none;transition:none}
}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Pretendard","Noto Sans KR",-apple-system,BlinkMacSystemFont,"Malgun Gothic",sans-serif;
  color:var(--text);
  background:var(--bg);
  line-height:1.7;
  font-size:clamp(15px,1.5vw,17px);
  word-break:keep-all;
}
img{max-width:100%;display:block}
a{color:inherit}
.container{max-width:1180px;margin:0 auto;padding:0 20px}

/* Header — 히어로 이미지 위에 덮어쓰는 오버레이 헤더 (투명, 스크롤 시 불투명 전환) */
header.site-header{
  position:fixed;top:0;left:0;right:0;z-index:50;
  background:linear-gradient(180deg,rgba(9,9,10,.55) 0%,rgba(9,9,10,.15) 70%,rgba(9,9,10,0) 100%);
  color:#fff;
  text-shadow:0 1px 3px rgba(0,0,0,.5);
  transition:background .2s ease;
}
header.site-header.scrolled{
  background:rgba(35,38,43,.97);
  backdrop-filter:blur(6px);
  box-shadow:0 2px 10px rgba(0,0,0,.15);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;max-width:1180px;margin:0 auto}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:1.15rem;text-decoration:none;color:#fff}
.brand img{width:34px;height:34px;border-radius:8px}
nav.main-nav{display:flex;gap:22px;flex-wrap:wrap}
nav.main-nav a{text-decoration:none;font-size:.95rem;font-weight:600;color:#f1f4f8;padding:6px 2px;border-bottom:2px solid transparent;transition:border-color .2s,color .2s}
nav.main-nav a:hover,nav.main-nav a.active{color:#fff;border-color:var(--safety)}
.header-cta{display:flex;gap:10px;align-items:center}
.header-cta .tel-btn{background:var(--safety);color:#fff;padding:9px 16px;border-radius:8px;font-weight:700;font-size:.9rem;text-decoration:none;white-space:nowrap;text-shadow:none}

/* Hero */
.hero{
  background:linear-gradient(135deg,var(--navy) 0%,var(--navy-2) 55%,#4b5563 100%);
  color:#fff;padding:118px 0 56px;position:relative;overflow:hidden;
}
.hero-inner{max-width:760px;padding:0 24px;text-align:left;position:relative}
@media (min-width:768px){
  .hero-inner{padding:0 80px}
}
@media (min-width:1200px){
  .hero-inner{padding:0 160px}
}
.hero h1{font-family:"Black Han Sans","Pretendard",sans-serif;font-size:clamp(2.6rem,7vw,4rem);font-weight:400;margin:0 0 16px;letter-spacing:-.5px}
.hero p.hero-subtitle{font-size:clamp(1rem,2vw,1.2rem);color:#cfe0f4;margin:0 0 28px;max-width:680px}
.hero-ctas{display:flex;gap:14px;justify-content:flex-start;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:8px;padding:14px 28px;border-radius:999px;font-weight:700;text-decoration:none;font-size:1rem;transition:transform .2s,box-shadow .2s}
.btn:hover{transform:translateY(-2px)}
.btn-primary{background:var(--safety);color:#fff;box-shadow:0 6px 18px rgba(220,38,38,.35)}
.btn-outline{background:rgba(255,255,255,.08);color:#fff;border:1.5px solid rgba(255,255,255,.55)}
.btn-outline-light{background:#fff;color:var(--navy);border:1.5px solid var(--border)}
.btn-outline-light:hover{border-color:var(--navy);background:#f8fafc}
.hero-meta{display:flex;gap:26px;justify-content:flex-start;flex-wrap:wrap;margin-top:32px;font-size:.88rem;color:#b9cbe0}
.hero-meta span{display:flex;align-items:center;gap:6px}

/* Hero — full-bleed 3-photo crossfade (ezworks81 스타일: 풀블리드 배경 + 다크 그라데이션 + 은은한 줌) */
.hero.hero-slideshow{padding:0;min-height:100vh;display:flex;align-items:center}
.hero-bg{position:absolute;inset:0;z-index:0;background:var(--navy)}
.hero-bg-img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:0;transform:scale(1.02);animation:heroFade 18s infinite;}
.hero-bg-img:nth-child(1){animation-delay:0s}
.hero-bg-img:nth-child(2){animation-delay:6s}
.hero-bg-img:nth-child(3){animation-delay:12s}
.hero-dim{position:absolute;inset:0;z-index:1;
  background:linear-gradient(180deg,rgba(20,20,22,.72) 0%,rgba(20,20,22,.55) 40%,rgba(20,20,22,.72) 100%);
}
.hero.hero-slideshow .hero-inner{z-index:2;padding-top:130px;padding-bottom:60px}
@keyframes heroFade{
  0%{opacity:0;transform:scale(1.02)}
  4%{opacity:1}
  30%{opacity:1;transform:scale(1.09)}
  36%{opacity:0;transform:scale(1.09)}
  100%{opacity:0}
}
@media (prefers-reduced-motion: reduce){
  .hero-bg-img{animation:none;opacity:0}
  .hero-bg-img:nth-child(1){opacity:1}
}

/* Sections */
main section{padding:56px 0}
main section.alt{background:#fff}
h2{font-family:"Black Han Sans","Pretendard",sans-serif;font-size:clamp(1.5rem,2.8vw,2.1rem);font-weight:400;color:var(--navy);margin:0 0 8px;letter-spacing:-.4px;text-align:left}
h2 .eyebrow{display:block;font-size:.8rem;font-weight:700;color:var(--blue);letter-spacing:1px;margin-bottom:8px;text-transform:uppercase}
.section-desc{color:var(--text-light);max-width:100%;margin:0 0 28px;font-size:1rem;text-align:left}
h3,h4{font-family:"Black Han Sans","Pretendard",sans-serif;font-size:1.1rem;color:var(--navy);font-weight:400}
.gallery-grid.single{max-width:100%}

/* Feature cards */
.card-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:18px;margin:28px 0}
.card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow)}
.card .num{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:50%;background:var(--navy);color:#fff;font-weight:800;font-size:.9rem;margin-bottom:12px}
.card h3{margin:0 0 8px}
.card p{margin:0;color:var(--text-light);font-size:.93rem}

/* Image + zoom */
.img-frame{overflow:hidden;border-radius:var(--radius);box-shadow:var(--shadow)}
.img-frame img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease,opacity .4s ease;opacity:0}
.img-frame img.loaded,.img-frame img{opacity:1}
.img-frame:hover img{transform:scale(1.06)}
.hero-media{max-width:900px;margin:36px auto 0}
.hero-media .img-frame{aspect-ratio:16/9}

/* Process flow */
.flow{display:flex;gap:14px;flex-wrap:wrap;counter-reset:step;margin:30px 0}
.flow-step{flex:1 1 150px;background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:18px 16px;text-align:center;position:relative}
.flow-step .step-no{width:30px;height:30px;border-radius:50%;background:var(--blue);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;margin:0 auto 10px}
.flow-step h4{margin:0 0 6px;font-size:.95rem;color:var(--navy)}
.flow-step p{margin:0;font-size:.82rem;color:var(--text-light)}

/* Tables */
.table-wrap{overflow-x:auto;margin:24px 0;border-radius:var(--radius);box-shadow:var(--shadow)}
table{width:100%;border-collapse:collapse;background:#fff;font-size:.92rem;min-width:560px}
table caption{caption-side:top;text-align:left;font-weight:800;font-size:1.2rem;color:var(--navy);padding:16px 18px;background:#eef3fa}
table caption .caption-sub{display:block;font-weight:600;font-size:.82rem;color:var(--text-light);margin-top:4px}
th,td{padding:12px 14px;border-bottom:1px solid var(--border);text-align:left;vertical-align:top}
thead th{background:var(--navy);color:#fff;font-weight:700}
tbody tr:nth-child(even){background:#f8fafc}

/* Lists */
.check-list{margin:16px 0;padding-left:0;list-style:none}
.check-list li{padding:8px 0 8px 30px;position:relative;color:var(--text-light);border-bottom:1px dashed var(--border)}
.check-list li::before{content:"✔";position:absolute;left:0;color:var(--blue);font-weight:800}

/* Case slideshow — 여러 장 순차 크로스페이드 (홈 미리보기용) */
.case-slideshow{position:relative;aspect-ratio:4/3;max-width:100%;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);background:var(--navy);margin:26px auto}
.case-slide{position:absolute;inset:0;opacity:0;animation:caseFade 25s infinite}
.case-slide:nth-child(1){animation-delay:0s}
.case-slide:nth-child(2){animation-delay:5s}
.case-slide:nth-child(3){animation-delay:10s}
.case-slide:nth-child(4){animation-delay:15s}
.case-slide:nth-child(5){animation-delay:20s}
.case-slide img{width:100%;height:100%;object-fit:cover;transform:scale(1.02)}
.case-cap{position:absolute;left:0;right:0;bottom:0;padding:34px 22px 18px;color:#fff;font-size:.92rem;
  background:linear-gradient(0deg,rgba(20,20,22,.85) 0%,rgba(20,20,22,0) 100%);}
.case-cap strong{display:block;font-size:1.05rem;margin-bottom:4px}
@keyframes caseFade{
  0%{opacity:0}
  2%{opacity:1}
  16%{opacity:1}
  20%{opacity:0}
  100%{opacity:0}
}
@media (prefers-reduced-motion: reduce){
  .case-slide{animation:none;opacity:0}
  .case-slide:nth-child(1){opacity:1}
}

/* Gallery */
.gallery-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:20px;margin:28px 0}
.gallery-card{margin:0;background:#fff;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.gallery-card .img-frame{aspect-ratio:4/3}
.gallery-card figcaption{padding:14px 16px;font-size:.86rem;color:var(--text-light)}
.gallery-card figcaption strong{display:block;color:var(--navy);font-size:.95rem;margin-bottom:4px}

/* FAQ */
.faq-list{margin:26px 0;display:flex;flex-direction:column;gap:10px}
details.faq-item{background:#fff;border:1px solid var(--border);border-radius:10px;padding:4px 18px}
details.faq-item summary{cursor:pointer;padding:14px 0;font-weight:700;color:var(--navy);list-style:none;display:flex;justify-content:space-between;align-items:center;gap:12px}
details.faq-item summary::-webkit-details-marker{display:none}
details.faq-item summary::after{content:"+";font-size:1.3rem;color:var(--blue);flex-shrink:0}
details.faq-item[open] summary::after{content:"–"}
details.faq-item p{margin:0 0 16px;color:var(--text-light);font-size:.93rem}
.faq-more .faq-list{margin:10px 0 0}

/* CTA band */
.cta-band{
  background:linear-gradient(180deg,rgba(35,38,43,.82) 0%,rgba(35,38,43,.88) 100%),
    url('/assets/image/images/동원홈푸드-옥상광고탑-형광등교체-02.webp') center/cover no-repeat;
  color:#fff;text-align:center;padding:64px 20px;
}
.cta-band h2{color:#fff;text-align:center}
.cta-band p{color:var(--safety);max-width:600px;margin:0 auto 24px}
.cta-band .hero-ctas{justify-content:center}

/* Checklist page (consulting) */
.contact-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;margin:24px 0}
.contact-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:24px;text-align:center;box-shadow:var(--shadow)}
.contact-card .icon{font-size:1.8rem;margin-bottom:10px}
.contact-card .tel-btn{display:inline-block;margin-top:10px;background:var(--safety);color:#fff;padding:10px 18px;border-radius:8px;font-weight:700;text-decoration:none;font-size:.92rem}
.contact-card .kakao-btn{display:inline-block;margin-top:10px;background:#FEE500;color:#3C1E1E;padding:10px 18px;border-radius:8px;font-weight:700;text-decoration:none;font-size:.92rem}

/* Footer */
footer.site-footer{background:#17191c;color:#9fb3c8;padding:40px 20px 26px;font-size:.85rem}
footer.site-footer .container{display:flex;flex-direction:column;gap:10px}
footer.site-footer strong{color:#fff;font-size:1rem}
footer.site-footer .foot-nav{display:flex;gap:16px;flex-wrap:wrap;margin:10px 0}
footer.site-footer .foot-nav a{color:#9fb3c8;text-decoration:none;font-size:.85rem}
footer.site-footer .foot-nav a:hover{color:#fff}
footer.site-footer .updated{color:#6a83a0;margin-top:8px;font-size:.78rem}

@media (max-width:720px){
  nav.main-nav{display:none}
  .header-inner{justify-content:space-between}
  .header-cta .tel-btn{padding:6px 10px;font-size:.8rem}
  .flow{flex-direction:column}
  main section{padding:40px 0}
  .hero{padding:96px 0 44px}
  .hero.hero-slideshow{min-height:100vh}
  .hero.hero-slideshow .hero-inner{padding-top:104px;padding-bottom:44px}
  .hero-ctas{flex-direction:row;align-items:flex-start;flex-wrap:wrap}
  .hero-ctas .btn{justify-content:center;width:auto;padding:11px 22px;font-size:.95rem;gap:6px}
  .hero-meta{gap:12px 18px;font-size:.82rem}
  .case-cap{padding:22px 16px 14px}
  .card-grid{grid-template-columns:repeat(2,1fr);gap:10px}
  .card{padding:14px}
  .card .num{width:24px;height:24px;font-size:.74rem;margin-bottom:6px}
  .card h3{font-size:.88rem;margin-bottom:4px}
  .card p{font-size:.78rem;line-height:1.5}
}