/* 레이아웃 레퍼런스: https://www.cupofcouple.com/ (구조·여백·헤어라인 그리드 복제, 폰트·이미지·내용은 자체) */
@font-face{font-family:'Pretendard';font-weight:300;font-style:normal;font-display:swap;src:url('/assets/fonts/Pretendard-Light.woff2') format('woff2')}
@font-face{font-family:'Pretendard';font-weight:400;font-style:normal;font-display:swap;src:url('/assets/fonts/Pretendard-Regular.woff2') format('woff2')}
@font-face{font-family:'Pretendard';font-weight:600;font-style:normal;font-display:swap;src:url('/assets/fonts/Pretendard-SemiBold.woff2') format('woff2')}

:root{
  --bg:#f0f0f0;
  --ink:rgba(0,0,0,.84);
  --sub:rgba(0,0,0,.56);
  --line:rgba(0,0,0,.78);
  --hair:rgba(0,0,0,.14);
  --tint:rgba(0,0,0,.05);
  --ph:#e3e1dd;
  --pad:36px;
  --gap:18px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --font:'Pretendard','Apple SD Gothic Neo','Noto Sans KR','Malgun Gothic',system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;scroll-padding-top:56px}
body,h1,h2,h3,p,ul,ol,figure,table{margin:0;padding:0}
body{background:var(--bg);color:var(--ink);font-family:var(--font);font-weight:400;font-size:15px;line-height:1.85;letter-spacing:-.005em;word-break:keep-all;overflow-wrap:break-word;-webkit-font-smoothing:antialiased}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
.skip{position:absolute;left:-9999px;top:0;background:#111;color:#fff;padding:10px 14px;z-index:100}
.skip:focus{left:8px;top:8px}
:focus-visible{outline:2px solid var(--ink);outline-offset:3px}

.shell{max-width:1680px;margin:0 auto;padding:0 var(--pad)}

/* ---------- 마스트헤드 / GNB (양쪽 끝까지 꽉 찬 6분할 바) ---------- */
.wordmark{display:block;text-align:center;padding:30px 0 24px;border-bottom:1px solid var(--line);font-weight:300;font-size:clamp(30px,4.4vw,54px);line-height:1;letter-spacing:.04em}
.wordmark small{display:block;margin-top:10px;font-size:10px;font-weight:400;letter-spacing:.42em;text-transform:uppercase;color:var(--sub)}
.gnb{position:sticky;top:0;z-index:50;background:var(--bg);border-bottom:1px solid var(--line);transition:box-shadow .4s var(--ease)}
body.scrolled .gnb{box-shadow:0 1px 0 var(--line),0 10px 24px -18px rgba(0,0,0,.35)}
.gnb ul{display:grid;grid-template-columns:repeat(6,minmax(0,1fr))}
.gnb li+li{border-left:1px solid var(--line)}
.gnb a{display:flex;align-items:center;justify-content:center;height:44px;font-size:12px;letter-spacing:.08em;transition:background .35s var(--ease)}
.gnb a:hover,.gnb a[aria-current]{background:var(--tint)}
.gnb li:last-child a{font-weight:600}

/* ---------- 페이지 헤드 (H1 + 두괄식 요약) ---------- */
.page-head{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:0 56px;align-items:end;padding:64px 0 44px;border-bottom:1px solid var(--line)}
.eyebrow{margin-bottom:18px;font-size:11px;letter-spacing:.22em;text-transform:uppercase;color:var(--sub)}
h1{font-weight:300;font-size:clamp(38px,6.4vw,92px);line-height:1.06;letter-spacing:-.025em}
.lead{font-size:clamp(16px,1.45vw,19px);line-height:1.85;font-weight:400}
.lead strong{font-weight:600}
.head-cta{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}

/* ---------- 버튼 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;height:46px;padding:0 30px;border:1px solid var(--line);background:transparent;color:var(--ink);font:inherit;font-size:13px;letter-spacing:.1em;cursor:pointer;transition:background .35s var(--ease),color .35s var(--ease)}
.btn:hover{background:var(--ink);color:var(--bg)}
.btn-solid{background:var(--ink);color:var(--bg)}
.btn-solid:hover{background:transparent;color:var(--ink)}
.btn-sm{height:38px;padding:0 22px;font-size:12px;margin-top:10px}

/* ---------- 섹션 바 (레퍼런스의 FEATURED PROJECTS 줄) ---------- */
.block{padding-top:56px}
.bar{display:flex;align-items:baseline;justify-content:space-between;gap:20px;padding:0 0 14px;border-bottom:1px solid var(--line);margin-bottom:26px}
.bar h2{font-weight:300;font-size:clamp(19px,2.1vw,28px);line-height:1.35;letter-spacing:-.015em}
.bar span{flex:none;font-size:11px;letter-spacing:.18em;color:var(--sub)}

/* ---------- 카드 그리드 (세로 헤어라인으로 분할) ---------- */
.cards{display:grid;align-items:start;column-gap:calc(var(--gap)*2)}
.cards.two{grid-template-columns:repeat(2,minmax(0,1fr))}
.cards.three{grid-template-columns:repeat(3,minmax(0,1fr))}
.cards.wide{grid-template-columns:minmax(0,1fr)}
.cards.rel{grid-template-columns:repeat(3,minmax(0,1fr));row-gap:48px}
.card{position:relative;display:block;min-width:0}
/* 열 사이 세로 헤어라인 (모든 열 폭을 동일하게 유지) */
.cards.two>.card+.card::before,.cards.three>.card+.card::before,.cards.rel>.card:not(:nth-child(3n+1))::before{content:'';position:absolute;left:calc(var(--gap)*-1);top:0;bottom:0;border-left:1px solid var(--line)}
.ph{position:relative;overflow:hidden;background:var(--ph)}
.ph img{width:100%;height:100%;object-fit:cover;transition:transform 1.1s var(--ease),opacity .9s var(--ease)}
.card:hover .ph img{transform:scale(1.035)}
.r-32{aspect-ratio:4/3}
.r-43{aspect-ratio:4/3}
.r-45{aspect-ratio:4/3}
.r-wide{aspect-ratio:21/9}
.r-hero{width:100%;aspect-ratio:auto;height:min(42.86vw,640px)}
.hero{padding-top:28px;border-bottom:0}
.hero+.page-head{padding-top:44px}
.hero .ph img{opacity:1}
.hero figcaption .cap-meta{padding-top:10px}
.rel .ph{aspect-ratio:4/3}
.cap-title{display:block;margin-top:18px;padding-bottom:12px;border-bottom:1px solid var(--line);font-weight:300;font-size:clamp(19px,2.1vw,30px);line-height:1.3;letter-spacing:-.015em}
.cap-line{padding:10px 0 0;font-size:13px;line-height:1.6;color:var(--sub)}
.cap-meta{display:flex;justify-content:space-between;gap:12px;padding-top:10px;font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--ink)}
figcaption .cap-meta{display:flex}
figcaption{display:block}
.cards.rel .cap-meta{padding-top:8px}

/* ---------- 본문 (2단: 제목 / 내용) ---------- */
.prose{max-width:760px;margin-top:22px}
.prose p{margin-bottom:1.1em;font-size:15px}
.prose p:last-child{margin-bottom:0}
.prose strong{font-weight:600}
.prose h3{margin-bottom:.6em;font-weight:600;font-size:16px;line-height:1.5}
.prose+.pts,.prose+.steps{margin-top:22px}
.block>.prose{max-width:none;display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);column-gap:56px;margin-top:26px}
.block>.prose>*{grid-column:2;min-width:0}
.prose.sub{margin-top:34px;padding-top:22px;border-top:1px solid var(--hair)}
.prose.sub:first-child{margin-top:0;padding-top:0;border-top:0}
.sec{padding-top:72px}
.band{padding-top:72px}
.band .cards{margin:0}
.sec-head,.sec-body{min-width:0}
.sec{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:0 56px;align-items:start}
.sec-head{padding-top:14px;border-top:1px solid var(--line)}
.sec-body{padding-top:14px;border-top:1px solid var(--line)}
.sec-head h2{font-weight:300;font-size:clamp(21px,2.4vw,32px);line-height:1.35;letter-spacing:-.015em}
.sec-body>.prose:first-child{margin-top:8px}
.rel-sec{display:block}
.rel-sec .bar{margin-bottom:30px}

/* 표 */
.tbl-wrap{margin-top:8px;overflow-x:auto}
.tbl{width:100%;border-collapse:collapse;font-size:14px;line-height:1.7}
.tbl caption{padding-bottom:12px;text-align:left;font-size:12px;letter-spacing:.14em;color:var(--sub)}
.tbl th,.tbl td{padding:15px 16px 15px 0;border-top:1px solid var(--hair);text-align:left;vertical-align:top;font-weight:400}
.tbl thead th{padding-top:12px;padding-bottom:12px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);font-size:11px;font-weight:600;letter-spacing:.16em}
.tbl tbody th{font-weight:600;white-space:nowrap}
.tbl tbody tr:last-child>*{border-bottom:1px solid var(--line)}
.note{margin-top:14px;font-size:12px;color:var(--sub)}

/* 번호 목록 */
.steps{counter-reset:s}
.steps li{display:grid;grid-template-columns:64px minmax(0,1fr);gap:0 12px;padding:20px 0;border-top:1px solid var(--hair)}
.steps li:first-child{border-top:0;padding-top:6px}
.steps .num{font-weight:300;font-size:28px;line-height:1.2;letter-spacing:-.02em}
.steps h3{margin-bottom:4px;font-weight:600;font-size:16px;line-height:1.5}
.steps p{font-size:14.5px;color:var(--ink)}

/* 포인트 그리드 */
.pts{display:grid;grid-template-columns:repeat(2,minmax(0,1fr))}
.pts li{padding:20px 20px 22px 0;border-top:1px solid var(--hair)}
.pts li:nth-child(even){padding-left:20px;padding-right:0;border-left:1px solid var(--hair)}
.pts li:nth-child(-n+2){border-top:0;padding-top:6px}
.pts h3{margin-bottom:6px;font-weight:600;font-size:16px;line-height:1.5}
.pts p{font-size:14.5px}

/* 제품 */
.prod{display:grid;grid-template-columns:minmax(0,1fr);gap:0}
.prod-ph{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.bul{margin:0}
.bul li{position:relative;padding-left:20px;margin-bottom:.6em;font-size:15px;line-height:1.8}
.bul li:last-child{margin-bottom:0}
.bul li::before{content:'';position:absolute;left:0;top:.95em;width:10px;border-top:1px solid var(--ink)}
.dash{margin-top:.6em}
.dash li{position:relative;padding-left:20px;margin-bottom:.6em;font-size:15px;line-height:1.8}
.dash li:last-child{margin-bottom:0}
.dash li::before{content:'';position:absolute;left:0;top:.95em;width:10px;border-top:1px solid var(--ink)}

/* CTA 띠 */
.cta-band{display:flex;align-items:center;justify-content:space-between;gap:24px;margin-top:80px;padding:28px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.cta-band p{font-weight:300;font-size:clamp(17px,1.9vw,24px);line-height:1.5;letter-spacing:-.01em}
.cta-band .btn{flex:none}

/* FAQ 아코디언 (details/summary — 답변 텍스트는 항상 DOM에 존재) */
.qa{border-top:1px solid var(--hair)}
.qa:first-child{border-top:0}
.qa:last-child{border-bottom:1px solid var(--line)}
.qa summary{display:flex;align-items:flex-start;justify-content:space-between;gap:18px;min-height:52px;padding:18px 0;cursor:pointer;list-style:none;transition:background .3s var(--ease)}
.qa summary::-webkit-details-marker{display:none}
.qa summary::after{content:'';flex:none;width:12px;height:12px;margin-top:7px;background:linear-gradient(var(--ink),var(--ink)) center/100% 1px no-repeat,linear-gradient(var(--ink),var(--ink)) center/1px 100% no-repeat;transition:background-size .35s var(--ease),transform .35s var(--ease)}
.qa[open] summary::after{background-size:100% 1px,1px 0;transform:rotate(180deg)}
.qa summary:hover h3{opacity:.7}
.qa h3{position:relative;padding-left:34px;font-weight:600;font-size:16px;line-height:1.55;transition:opacity .3s}
.qa h3::before{content:'Q.';position:absolute;left:0;top:0;font-weight:300;font-size:15px;letter-spacing:.04em}
.qa .ans{padding:0 30px 20px 0}
.qa .ans p{position:relative;padding-left:34px;font-size:14.5px}
.qa .ans p::before{content:'A.';position:absolute;left:0;top:0;font-weight:300;font-size:15px;letter-spacing:.04em;color:var(--sub)}
.qa[open] .ans{animation:ansIn .45s var(--ease)}
@keyframes ansIn{from{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:none}}
@media (prefers-reduced-motion:reduce){.qa[open] .ans{animation:none}}

/* 안내 링크 목록 */
.gl li{display:flex;flex-wrap:wrap;align-items:baseline;gap:6px 18px;padding:13px 0;border-top:1px solid var(--hair)}
.gl li:first-child{border-top:0;padding-top:4px}
.gl a{font-weight:600;font-size:15.5px;border-bottom:1px solid var(--line);transition:opacity .3s}
.gl a:hover{opacity:.6}
.gl span{font-size:13.5px;color:var(--sub)}
.guide-sec{padding-top:56px}

/* 사진 배너 */
.banners{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));column-gap:calc(var(--gap)*2);row-gap:14px;margin-top:72px}
.banner{position:relative;display:block;overflow:hidden;aspect-ratio:21/9;background:var(--ph)}
.banner img{width:100%;height:100%;object-fit:cover;transition:transform 1.2s var(--ease)}
.banner::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,rgba(0,0,0,.04) 30%,rgba(0,0,0,.62) 100%)}
.banner:hover img{transform:scale(1.04)}
.banner-txt{position:absolute;left:24px;right:24px;bottom:20px;z-index:1;color:#f4f2ee}
.banner-txt small{display:block;font-size:11px;letter-spacing:.16em;opacity:.85}
.banner-txt strong{display:block;margin-top:2px;font-weight:300;font-size:clamp(22px,2.6vw,36px);line-height:1.2;letter-spacing:-.01em}

.updated{margin-top:56px;padding-top:14px;border-top:1px solid var(--line);font-size:12px;letter-spacing:.06em;color:var(--sub)}

/* 상담 폼 영역 */
.form-box{margin-top:8px;border:1px solid var(--line)}
.form-box .fb-top{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;padding:18px 20px;border-bottom:1px solid var(--line)}
.form-box .fb-top p{font-size:14px}
.form-box iframe{display:block;width:100%;height:760px;border:0;background:#fff}

/* ---------- 푸터 ---------- */
.footer{margin-top:96px;padding-bottom:36px}
.footer .wordmark{border-top:1px solid var(--line)}
.foot-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));border-bottom:1px solid var(--line)}
.foot-cell{padding:26px 16px 30px;text-align:center;font-size:12.5px;line-height:1.9}
.foot-cell+.foot-cell{border-left:1px solid var(--line)}
.foot-h{margin-bottom:12px;font-size:11px;letter-spacing:.24em;text-transform:uppercase;color:var(--sub)}
.foot-copy{padding-top:16px;text-align:center;font-size:11.5px;letter-spacing:.04em;color:var(--sub)}

/* ---------- 플로팅 / 모바일 하단 CTA ---------- */
.fab-home{position:fixed;right:24px;bottom:26px;z-index:60;display:flex;align-items:center;height:40px;padding:0 20px;border:1px solid var(--line);background:var(--bg);font-size:12px;letter-spacing:.12em;box-shadow:0 10px 24px -14px rgba(0,0,0,.5);transition:background .35s var(--ease),color .35s var(--ease),transform .35s var(--ease)}
.fab-home:hover{background:var(--ink);color:var(--bg);transform:translateY(-2px)}
.m-cta{display:none}

/* ---------- 스크롤 등장 (JS 있을 때만 숨김 → 없으면 항상 보임) ---------- */
.js .rv{opacity:0;transform:translateY(14px);transition:opacity .9s var(--ease),transform .9s var(--ease)}
.js .rv.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .js .rv{opacity:1;transform:none;transition:none}
  .ph img,.banner img{transition:none}
}

/* ---------- 소형 노트북 ---------- */
@media (max-width:1280px){
  :root{--pad:28px}
  .page-head,.sec,.block>.prose{column-gap:40px}
  h1{font-size:clamp(38px,6vw,76px)}
}

/* ---------- 태블릿 ---------- */
@media (max-width:1024px){
  :root{--pad:24px}
  .gnb a{height:46px}
  .cards.three .cap-title{font-size:clamp(17px,2.4vw,22px)}
  .page-head{grid-template-columns:1fr;gap:26px;padding:48px 0 36px}
  .sec{grid-template-columns:1fr;gap:0}
  .block>.prose{display:block}
  .sec-head{border-top:1px solid var(--line);padding-bottom:6px}
  .sec-body{border-top:0;padding-top:6px}
  .cards.rel{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cards.rel>.card::before{display:none}
  .cards.rel>.card:nth-child(even)::before{display:block;content:'';position:absolute;left:calc(var(--gap)*-1);top:0;bottom:0;border-left:1px solid var(--line)}
}

/* ---------- 모바일 (768px 이하) ---------- */
@media (max-width:768px){
  :root{--pad:12px;--gap:10px}
  body{font-size:14.5px;line-height:1.8;padding-bottom:calc(60px + env(safe-area-inset-bottom))}
  .wordmark{padding:22px 0 18px;font-size:34px}
  .gnb ul{grid-template-columns:repeat(3,minmax(0,1fr))}
  .gnb li:nth-child(n+4){border-top:1px solid var(--line)}
  .gnb li:nth-child(4){border-left:0}
  .gnb a{height:44px;font-size:12.5px;letter-spacing:.04em}
  .page-head{padding:36px 0 30px}
  h1{font-size:clamp(34px,11vw,52px)}
  .lead{font-size:15.5px}
  .head-cta .btn{flex:1 1 0;padding:0 12px;height:48px}
  .btn-sm{height:44px}
  .qa summary{padding:16px 0}
  .qa h3{font-size:15.5px}
  .qa .ans{padding-right:0}
  .block{padding-top:40px}
  .bar{margin-bottom:18px}
  .cards.two{grid-template-columns:minmax(0,1fr);row-gap:26px}
  .cards.three{display:flex;gap:12px;overflow-x:auto;scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;scrollbar-width:none;margin-right:calc(var(--pad)*-1);padding-right:var(--pad);overscroll-behavior-x:contain}
  .cards.three::-webkit-scrollbar{display:none}
  .cards.three>.card{flex:0 0 78%;scroll-snap-align:start}
  .js .cards.three>.card.rv{opacity:1;transform:none}
  .cards.two>.card+.card::before,.cards.three>.card+.card::before{display:none}
  .cards.two{column-gap:0}
  .cards.rel{column-gap:calc(var(--gap)*2)}
  .r-wide{aspect-ratio:4/3}
  .r-hero{aspect-ratio:4/3;height:auto}
  .hero{padding-top:18px}
  .hero+.page-head{padding-top:30px}
  .cap-title{margin-top:14px;font-size:20px}
  .prose{margin-top:18px}
  .sec{padding-top:52px}
  .band{padding-top:44px}
  .sec-head h2{font-size:21px}
  .tbl thead{position:absolute;left:-9999px}
  .tbl caption{display:block;width:100%}
  .tbl,.tbl tbody,.tbl tr,.tbl th,.tbl td{display:block;width:100%}
  .tbl tr{padding:14px 0;border-top:1px solid var(--hair)}
  .tbl tbody tr:first-child{border-top:1px solid var(--line)}
  .tbl tbody tr:last-child{border-bottom:1px solid var(--line)}
  .tbl tbody tr:last-child>*{border-bottom:0}
  .tbl th,.tbl td{padding:2px 0;border:0}
  .tbl td::before{content:attr(data-l) '  ';font-size:11px;letter-spacing:.12em;color:var(--sub)}
  .steps li{grid-template-columns:46px minmax(0,1fr)}
  .steps .num{font-size:24px}
  .pts{grid-template-columns:minmax(0,1fr)}
  .pts li,.pts li:nth-child(even){padding:18px 0;border-left:0;border-top:1px solid var(--hair)}
  .pts li:first-child{border-top:0;padding-top:6px}
  .pts li:nth-child(2){padding-top:18px;border-top:1px solid var(--hair)}
  .cta-band{flex-direction:column;align-items:stretch;gap:16px;margin-top:56px;text-align:left}
  .cta-band .btn{width:100%}
  .cards.rel{grid-template-columns:repeat(2,minmax(0,1fr));row-gap:28px}
  .cards.rel .cap-title{font-size:17px;margin-top:12px}
  .cards.rel .cap-line{font-size:12px;line-height:1.5}
  .cards.rel .cap-meta{font-size:10px}
  .banners{grid-template-columns:minmax(0,1fr);margin-top:52px}
  .banner{aspect-ratio:4/3}
  .banner-txt{left:16px;bottom:14px}
  .form-box iframe{height:640px}
  .footer{margin-top:64px}
  .foot-grid{grid-template-columns:minmax(0,1fr)}
  .foot-cell{padding:20px 12px 22px}
  .foot-cell+.foot-cell{border-left:0;border-top:1px solid var(--line)}
  .fab-home{right:12px;bottom:calc(72px + env(safe-area-inset-bottom));height:36px;padding:0 16px}
  .m-cta{position:fixed;left:0;right:0;bottom:0;z-index:70;display:block;padding:8px 12px calc(8px + env(safe-area-inset-bottom));background:var(--bg);border-top:1px solid var(--line)}
  .m-cta a{display:flex;align-items:center;justify-content:center;height:44px;background:var(--ink);color:var(--bg);font-size:13px;letter-spacing:.12em}
}
@media (max-width:380px){
  .gnb a{font-size:11.5px}
  h1{font-size:34px}
}

/* ---------- 가로 모드 폰 (높이가 낮은 터치 기기) ---------- */
@media (max-height:480px) and (pointer:coarse){
  .gnb{position:static}
  .m-cta{position:fixed;left:0;right:0;bottom:0;z-index:70;display:block;padding:6px 12px calc(6px + env(safe-area-inset-bottom));background:var(--bg);border-top:1px solid var(--line)}
  .m-cta a{display:flex;align-items:center;justify-content:center;height:40px;background:var(--ink);color:var(--bg);font-size:13px;letter-spacing:.12em}
  body{padding-bottom:calc(52px + env(safe-area-inset-bottom))}
  .fab-home{bottom:calc(60px + env(safe-area-inset-bottom))}
}
/* ---------- 대형 화면 ---------- */
@media (min-width:1920px){
  body{font-size:16px}
  .prose p,.bul li,.dash li{font-size:16px}
}