/* ===== Design tokens ===== */
:root{
  --navy: #082A55;
  --navy-2: #0A315F;
  --white: #FFFFFF;
  --offwhite: #F7F8FA;
  --gold: #C99B55;
  --gold-2: #D0A45C;
  --charcoal: #20252B;
  --dark: #16191D;
  --border: #E4E7EC;
  --radius: 4px;
  --container: 1200px;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:'Pretendard', -apple-system, BlinkMacSystemFont, sans-serif;
  color:var(--charcoal);
  background:var(--white);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none;margin:0;padding:0}
h1,h2,h3,p{margin:0}
button{font:inherit;background:none;border:none;cursor:pointer;color:inherit}

.container{max-width:var(--container);margin:0 auto;padding:0 24px}

/* ===== Section spacing rhythm ===== */
.section{padding:90px 0}
.section-lg{padding:120px 0}
.section-xl{padding:140px 0}
@media (max-width:768px){
  .section{padding:64px 0}
  .section-lg{padding:76px 0}
  .section-xl{padding:88px 0}
}

/* 데스크톱 전용 줄바꿈: 좁은 화면에서는 자연 줄바꿈에 맡겨 어색한 고아 단어를 방지 */
@media (max-width:520px){
  br.brk{display:none}
}

.eyebrow{
  display:block;
  font-size:.78rem;
  letter-spacing:.22em;
  color:var(--gold);
  font-weight:600;
  margin-bottom:14px;
}
.section-title{
  font-size:clamp(1.6rem, 2.4vw, 2.3rem);
  font-weight:700;
  line-height:1.4;
  letter-spacing:-.01em;
}
.section-head{margin-bottom:64px}
.section-head.center{text-align:center}
.section-head .lead{max-width:520px;margin:20px auto 0;color:#6B7280;line-height:1.8;font-size:.98rem}
.section-head:not(.center) .lead{margin-left:0}

/* ===== Header ===== */
.site-header{background:var(--navy);position:relative;z-index:50}
.header-inner{
  max-width:var(--container);margin:0 auto;padding:18px 24px;
  display:flex;align-items:center;gap:32px;
}
.brand{display:flex;flex-direction:column;gap:2px;margin-right:auto}
.brand-name{color:var(--white);font-weight:700;font-size:1.15rem;letter-spacing:.02em}
.brand-sub{color:rgba(255,255,255,.55);font-size:.72rem;letter-spacing:.05em}
.main-nav{display:flex;gap:28px;align-items:center}
.main-nav a{color:rgba(255,255,255,.82);font-size:.92rem;position:relative;padding:4px 0}
.main-nav a:hover,.main-nav a.is-active{color:var(--gold)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 26px;border-radius:2px;font-weight:600;font-size:.92rem;
  transition:opacity .2s ease, transform .2s ease;
}
.btn-gold{background:var(--gold);color:var(--navy)}
.btn-gold:hover{opacity:.88}
.btn-lg{padding:16px 40px;font-size:1rem}
.header-cta{white-space:nowrap}
.nav-toggle{display:none;flex-direction:column;gap:5px;padding:6px}
.nav-toggle span{width:22px;height:2px;background:var(--white);display:block}
.mobile-nav{display:none}

@media (max-width:960px){
  .main-nav{display:none}
  .header-cta{display:none}
  .nav-toggle{display:flex}
  .mobile-nav{
    display:none;flex-direction:column;gap:2px;
    background:var(--navy-2);padding:8px 24px 20px;
  }
  .mobile-nav.is-open{display:flex}
  .mobile-nav a{color:rgba(255,255,255,.85);padding:12px 0;border-bottom:1px solid rgba(255,255,255,.08)}
  .mobile-nav .btn{margin-top:14px;width:fit-content}
}

/* ===== Hero ===== */
.hero{position:relative;background:var(--white);overflow:hidden}
.hero-grid{
  display:grid;grid-template-columns:1.05fr .95fr;align-items:stretch;min-height:640px;
}
.hero-left{
  display:flex;flex-direction:column;justify-content:center;
  padding:100px 5vw 100px 0;margin-left:max(24px, calc((100vw - var(--container))/2 + 24px));
  position:relative;z-index:2;
}
.hero-eyebrow{color:var(--navy-2);font-size:.92rem;letter-spacing:.05em;margin-bottom:22px;font-weight:500}
.hero-title{
  font-size:clamp(2.4rem, 5vw, 4rem);font-weight:800;line-height:1.15;
  color:var(--navy);letter-spacing:-.02em;
}
.hero-title .accent{color:var(--gold)}
.hero-desc{margin-top:28px;font-size:1.05rem;color:#4B5563;line-height:1.8;max-width:440px}
.hero-mini{display:flex;gap:36px;margin-top:64px;flex-wrap:wrap}
.hero-mini-item{display:flex;align-items:center;gap:12px;max-width:150px}
.hero-mini-item .icon{width:24px;height:24px;color:var(--gold);flex:none}
.hero-mini-num{font-size:.7rem;color:var(--gold);letter-spacing:.1em;display:block;margin-bottom:2px}
.hero-mini-text{font-size:.86rem;color:var(--charcoal);line-height:1.4}

.hero-right{position:relative}
.hero-photo-wrap{
  position:absolute;inset:0;overflow:hidden;
  border-top-left-radius:14% 62%;
  border-bottom-left-radius:14% 62%;
}
.hero-photo-wrap img{width:100%;height:100%;object-fit:cover;object-position:center 35%}
@media (max-width:960px){
  .hero-grid{grid-template-columns:1fr;min-height:0}
  .hero-left{margin-left:0;padding:64px 24px 48px}
  .hero-right{height:360px}
  .hero-photo-wrap{clip-path:polygon(0 12%, 100% 0, 100% 100%, 0 100%)}
  .hero-mini{gap:24px}
}

.hero-spacer{height:110px}
@media (max-width:768px){.hero-spacer{height:72px}}

/* ===== NSEO service index ===== */
.guide-grid{
  display:grid;grid-template-columns:repeat(5,1fr);gap:20px;
}
.guide-card{
  background:var(--offwhite);border:1px solid var(--border);border-radius:var(--radius);
  padding:36px 24px;text-align:left;transition:border-color .2s ease, transform .2s ease;
}
.guide-card:hover{border-color:var(--gold);transform:translateY(-3px)}
.guide-num{color:var(--gold);font-size:.8rem;font-weight:700;letter-spacing:.06em}
.guide-card .icon{width:38px;height:38px;color:var(--navy);margin:18px 0 20px}
.guide-name{font-weight:700;font-size:1.02rem;color:var(--charcoal)}
@media (max-width:960px){.guide-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:560px){.guide-grid{grid-template-columns:1fr}}

/* ===== Navy information section ===== */
.info-navy{background:var(--navy);color:var(--white)}
.info-navy .section-title{color:var(--white);max-width:640px}
.info-grid{
  margin-top:64px;display:grid;grid-template-columns:repeat(4,1fr);gap:32px;
}
.info-item{border-top:1px solid rgba(255,255,255,.18);padding-top:24px}
.info-item .icon{width:30px;height:30px;color:var(--gold);margin-bottom:18px}
.info-item h3{font-size:1.02rem;font-weight:700;margin-bottom:10px}
.info-item p{font-size:.9rem;color:rgba(255,255,255,.68);line-height:1.7}
@media (max-width:960px){.info-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:560px){.info-grid{grid-template-columns:1fr}}

/* ===== Field visual (사진+텍스트 split) ===== */
.field-visual{background:var(--white)}
.field-grid{display:grid;grid-template-columns:1fr 1fr;gap:72px;align-items:center}
.field-photo{border-radius:var(--radius);overflow:hidden}
.field-photo img{width:100%;height:auto;object-fit:cover;aspect-ratio:4/5}
.field-text .eyebrow{margin-bottom:16px}
.field-text h3{font-size:1.7rem;font-weight:700;color:var(--navy);line-height:1.4;margin-bottom:20px}
.field-text p{color:#4B5563;line-height:1.85;font-size:.98rem}
.field-visual.reverse .field-grid{grid-template-columns:1fr 1fr}
.field-visual.reverse .field-photo{order:2}
.field-visual.reverse .field-text{order:1}

.field-big-num{
  font-size:clamp(4.5rem,10vw,7rem);font-weight:800;color:var(--offwhite);
  line-height:.9;-webkit-text-stroke:1px var(--navy);color:transparent;
}
.field-type{font-size:1.6rem;font-weight:700;color:var(--navy);letter-spacing:.02em;margin-top:6px;line-height:1.3}
.field-type span{display:block;color:var(--gold)}

@media (max-width:860px){
  .field-grid{grid-template-columns:1fr;gap:36px}
  .field-visual.reverse .field-photo,.field-visual.reverse .field-text{order:initial}
}

/* ===== Process ===== */
.process-track{
  display:grid;grid-template-columns:repeat(5,1fr);gap:0;margin-top:64px;
  position:relative;
}
.process-step{padding:0 18px;text-align:center;position:relative}
.process-step .icon{width:34px;height:34px;color:var(--navy);margin:0 auto 18px}
.process-num{color:var(--gold);font-weight:700;font-size:.85rem;letter-spacing:.08em;display:block;margin-bottom:10px}
.process-step h3{font-size:.96rem;font-weight:700;color:var(--charcoal)}
.process-arrow{
  position:absolute;top:17px;right:-18px;width:36px;height:12px;color:var(--gold);z-index:1;
}
.process-step:last-child .process-arrow{display:none}
@media (max-width:860px){
  .process-track{grid-template-columns:1fr;gap:40px}
  .process-arrow{display:none}
}

/* ===== FAQ ===== */
.faq-list{max-width:820px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--border)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:26px 4px;text-align:left;font-weight:600;font-size:1rem;color:var(--navy);
}
.faq-q .icon{width:18px;height:18px;color:var(--gold);flex:none;transition:transform .25s ease}
.faq-item.is-open .faq-q .icon{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a p{padding:0 4px 26px;color:#4B5563;line-height:1.8;font-size:.94rem;max-width:680px}

/* ===== Project archive / other-projects / other-services (photo cards) ===== */
.photo-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.photo-card{display:block}
.photo-card figure{margin:0;border-radius:var(--radius);overflow:hidden;aspect-ratio:4/3}
.photo-card img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.photo-card:hover img{transform:scale(1.04)}
.photo-card .pc-num{color:var(--gold);font-weight:700;font-size:.8rem;letter-spacing:.06em;margin-top:18px;display:block}
.photo-card .pc-title{font-weight:700;font-size:1.02rem;margin-top:6px;color:var(--charcoal)}
.photo-card .pc-arrow{width:16px;height:16px;color:var(--gold);margin-top:8px}

.services-cards{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.service-card{
  display:block;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;
  transition:border-color .2s ease, transform .2s ease;
}
.service-card:hover{border-color:var(--gold);transform:translateY(-3px)}
.service-card figure{margin:0;aspect-ratio:4/3;overflow:hidden}
.service-card img{width:100%;height:100%;object-fit:cover}
.service-card .sc-body{padding:20px}
.service-card .sc-num{color:var(--gold);font-weight:700;font-size:.78rem;letter-spacing:.06em}
.service-card .sc-name{font-weight:700;margin-top:6px;font-size:1rem}
.service-card .sc-arrow{width:15px;height:15px;color:var(--gold);margin-top:10px}

@media (max-width:860px){
  .photo-cards{grid-template-columns:1fr;gap:24px}
  .services-cards{grid-template-columns:repeat(2,1fr)}
}

/* ===== Final CTA ===== */
.final-cta{background:var(--navy);position:relative;padding:130px 0;text-align:center;color:var(--white)}
.final-cta-line{
  position:absolute;top:0;left:50%;transform:translateX(-50%);width:120px;height:2px;background:var(--gold);
}
.final-cta h2{font-size:clamp(1.7rem,3.4vw,2.6rem);font-weight:800;line-height:1.4}
.final-cta p{margin-top:22px;color:rgba(255,255,255,.68);line-height:1.8;font-size:1rem}
.final-cta .btn{margin-top:40px}
@media (max-width:768px){.final-cta{padding:88px 0}}

/* ===== Footer ===== */
.site-footer{background:var(--dark);color:rgba(255,255,255,.8);padding:64px 0 32px}
.footer-brand{display:flex;flex-direction:column;gap:4px;margin-bottom:32px}
.footer-brand .brand-name{color:var(--white);font-size:1.05rem;font-weight:700}
.footer-brand .brand-sub{color:rgba(255,255,255,.5);font-size:.78rem}
.footer-info{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;padding-bottom:32px;border-bottom:1px solid rgba(255,255,255,.12)}
.footer-info dt{font-size:.72rem;color:rgba(255,255,255,.45);letter-spacing:.06em;margin-bottom:6px}
.footer-info dd{margin:0;font-size:.92rem;color:rgba(255,255,255,.85)}
.footer-info a{color:rgba(255,255,255,.85)}
.footer-copy{margin-top:24px;font-size:.78rem;color:rgba(255,255,255,.4)}
@media (max-width:768px){.footer-info{grid-template-columns:1fr 1fr}}

/* ===== Simple page hero (NSEO detail pages) ===== */
.page-hero{background:var(--offwhite);padding:76px 0 64px}
.page-hero .eyebrow{margin-bottom:16px}
.page-hero h1{font-size:clamp(2rem,4vw,2.8rem);font-weight:800;color:var(--navy)}
.page-hero p{margin-top:20px;color:#4B5563;max-width:560px;line-height:1.8}
.breadcrumb{font-size:.82rem;color:#8A93A3;margin-bottom:22px}
.breadcrumb a{color:#8A93A3}
.breadcrumb a:hover{color:var(--gold)}

.prose{max-width:720px}
.prose h2{font-size:1.6rem;font-weight:700;color:var(--navy);margin-bottom:24px;line-height:1.5}
.prose p{color:#4B5563;line-height:1.9;font-size:1rem;margin-bottom:18px}
.prose p:last-child{margin-bottom:0}

.checklist{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;margin-top:64px}
.checklist-item{display:flex;gap:16px;padding:24px;background:var(--offwhite);border-radius:var(--radius)}
.checklist-item .icon{width:26px;height:26px;color:var(--gold);flex:none}
.checklist-item h3{font-size:.98rem;font-weight:700;margin-bottom:8px}
.checklist-item p{font-size:.88rem;color:#5B6472;line-height:1.7}
@media (max-width:700px){.checklist{grid-template-columns:1fr}}

.section-offwhite{background:var(--offwhite)}

/* ===== Case detail pages (지역+키워드 시공사례) ===== */
.case-photos{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.case-photo{position:relative;border-radius:var(--radius);overflow:hidden;aspect-ratio:3/4}
.case-photo img{width:100%;height:100%;object-fit:cover}
.case-badge{position:absolute;top:16px;left:16px;padding:6px 14px;border-radius:2px;font-size:.78rem;font-weight:700;letter-spacing:.06em;color:var(--white)}
.case-badge.before{background:#6B7280}
.case-badge.after{background:var(--gold);color:var(--navy)}
@media (max-width:700px){.case-photos{grid-template-columns:1fr}}

.case-table{width:100%;border-collapse:collapse;margin-top:8px}
.case-table th,.case-table td{padding:16px 20px;border-bottom:1px solid var(--border);text-align:left;font-size:.94rem}
.case-table th{width:150px;color:#6B7280;font-weight:600;background:var(--offwhite)}
.case-table td{color:var(--charcoal)}

.case-cta p{max-width:560px;margin:0 auto;text-align:center;color:#4B5563;line-height:1.85;font-size:1.02rem}
.case-cta{text-align:center}
.case-cta .btn{margin-top:24px}

.nseo-links{display:grid;grid-template-columns:repeat(5,1fr);gap:20px}
@media (max-width:960px){.nseo-links{grid-template-columns:repeat(3,1fr)}}
@media (max-width:600px){.nseo-links{grid-template-columns:1fr}}

/* 3열 균형형 그리드 (5개 카드 -> 3+2, 외톨이 카드 없음) */
.nseo-links-32{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
@media (max-width:640px){.nseo-links-32{grid-template-columns:1fr}}

/* 가로 리스트형 카드 (외톨이 카드 이슈 자체가 없는 1열 구성) */
.nseo-list{display:flex;flex-direction:column;gap:16px}
.nseo-list-item{
  display:flex;align-items:center;gap:20px;padding:14px;
  border:1px solid var(--border);border-radius:var(--radius);
  transition:border-color .2s ease;
}
.nseo-list-item:hover{border-color:var(--gold)}
.nseo-list-item figure{margin:0;flex:none;width:96px;height:96px;border-radius:var(--radius);overflow:hidden}
.nseo-list-item img{width:100%;height:100%;object-fit:cover}
.nseo-list-item .sc-name{font-weight:700;font-size:1rem;flex:1}
.nseo-list-item .sc-arrow{width:15px;height:15px;color:var(--gold);flex:none}
@media (max-width:560px){.nseo-list-item figure{width:72px;height:72px}}