/* ============================================================
   RAUM I&C — 공통 디자인 시스템 (site.css)
   컨셉: Quiet Luxury · 넓은 여백 · 절제된 타이포 · 공간(사진)이 주인공
   폰트: Outfit(영문/UI) + Pretendard(한글 본문)
   ※ 시안 공통 스타일. 실제 구축 시 워드프레스 테마 / 아임웹 코드로 이식.
   ============================================================ */

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
::selection{background:#1a1a1a;color:#fff}

:root{
  --white:#ffffff; --off-white:#f6f5f2; --paper:#efede8;
  --gray-bg:#e6e4df; --gray-line:#d8d5ce; --gray-text:#7c7770; --gray-muted:#a8a39b;
  --charcoal:#1a1a1a; --ink:#111010; --black:#000000;
  --accent:#97897a; --accent-light:#b0a596; --accent-soft:#efe9e2;
  --film:rgba(20,18,16,.42);
  --maxw:1320px; --pad:24px;
}
@media(min-width:1200px){:root{--pad:5%}}

body{
  font-family:'Pretendard',-apple-system,BlinkMacSystemFont,sans-serif;
  font-weight:300; color:var(--charcoal); background:var(--white);
  overflow-x:hidden; -webkit-font-smoothing:antialiased; line-height:1.5;
}
.wrap{max-width:var(--maxw);margin:0 auto;padding-left:var(--pad);padding-right:var(--pad)}
.en{font-family:'Outfit',sans-serif}

/* ===== NAV ===================================================== */
.nav{position:fixed;top:0;left:0;right:0;z-index:100;height:74px;
  display:flex;align-items:center;justify-content:space-between;
  padding:0 var(--pad);transition:background .5s ease,box-shadow .5s ease,color .5s ease}
.nav-logo{font-family:'Outfit',sans-serif;font-weight:600;font-size:21px;
  letter-spacing:5px;color:#fff;text-transform:uppercase;transition:color .5s ease}
.nav-logo small{font-family:'Pretendard';font-weight:400;font-size:10px;letter-spacing:1px;
  opacity:.7;display:block;margin-top:-2px;letter-spacing:2px}
.nav-links{display:none;gap:38px;align-items:center;list-style:none}
@media(min-width:1024px){.nav-links{display:flex}}
.nav-links>li>a{font-family:'Outfit',sans-serif;font-size:13.5px;font-weight:400;letter-spacing:1.2px;
  color:#fff;text-transform:uppercase;transition:color .5s ease,opacity .3s;position:relative}
.nav-links>li>a:hover{opacity:.55}
.dropdown{position:relative}
.dropdown-menu{position:absolute;top:calc(100% + 14px);left:50%;transform:translateX(-50%);
  background:#fff;border:1px solid var(--gray-line);padding:10px 0;min-width:160px;
  opacity:0;visibility:hidden;transition:all .3s ease;box-shadow:0 12px 40px rgba(0,0,0,.08)}
.dropdown:hover .dropdown-menu{opacity:1;visibility:visible;top:calc(100% + 6px)}
.dropdown-menu a{display:block;padding:9px 22px;font-size:13px;color:var(--gray-text);
  font-family:'Pretendard';letter-spacing:.5px}
.dropdown-menu a:hover{color:var(--charcoal);background:var(--off-white)}
.mobile-toggle{display:flex;flex-direction:column;gap:5px;cursor:pointer;background:none;border:none;padding:8px}
.mobile-toggle span{width:24px;height:1.5px;background:#fff;transition:.3s}
@media(min-width:1024px){.mobile-toggle{display:none}}

/* 스크롤 시 / 내부 페이지: 화이트 바 + 차콜 텍스트 */
.nav.scrolled,.nav.solid{background:rgba(255,255,255,.94);
  backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);box-shadow:0 1px 0 rgba(0,0,0,.06)}
.nav.scrolled .nav-logo,.nav.solid .nav-logo,
.nav.scrolled .nav-links>li>a,.nav.solid .nav-links>li>a{color:var(--charcoal)}
.nav.scrolled .mobile-toggle span,.nav.solid .mobile-toggle span{background:var(--charcoal)}

.mobile-menu{display:none;position:fixed;inset:0;background:#fff;z-index:200;
  flex-direction:column;align-items:center;justify-content:center;gap:26px}
.mobile-menu.open{display:flex}
.mobile-menu a{font-family:'Outfit';font-size:26px;font-weight:300;color:var(--charcoal);letter-spacing:2px}
.mobile-menu a small{display:block;font-family:'Pretendard';font-size:12px;color:var(--gray-muted);text-align:center;letter-spacing:1px;margin-top:2px}
.mobile-menu .close-btn{position:absolute;top:22px;right:24px;font-size:30px;background:none;border:none;cursor:pointer;color:var(--charcoal)}

/* ===== 공통 섹션 / 타이포 =================================== */
.section{padding:100px var(--pad)}
@media(min-width:1200px){.section{padding:140px var(--pad)}}
.section.tight{padding-top:80px;padding-bottom:80px}
.section.bg-off{background:var(--off-white)}
.section.bg-ink{background:var(--charcoal);color:#fff}

.eyebrow{font-family:'Outfit';font-size:12px;font-weight:500;letter-spacing:4px;
  text-transform:uppercase;color:var(--accent);margin-bottom:18px}
.eyebrow.muted{color:var(--gray-muted)}
.label-lg{font-family:'Outfit';font-size:23px;font-weight:500;color:var(--charcoal);margin-bottom:20px;letter-spacing:.3px}
@media(min-width:1200px){.label-lg{font-size:28px}}
.heading{font-family:'Outfit';font-size:32px;font-weight:300;color:var(--charcoal);letter-spacing:.3px;line-height:1.2}
@media(min-width:1200px){.heading{font-size:46px}}
.heading .thin{font-weight:200;color:var(--gray-text)}
.body-lg{font-size:17px;line-height:1.8;color:var(--charcoal);font-weight:300;max-width:820px}
@media(min-width:1200px){.body-lg{font-size:19px;line-height:1.85}}
.body{font-size:15px;line-height:1.75;color:var(--gray-text);font-weight:300}
.k-keep{word-break:keep-all}

.link-arrow{display:inline-flex;align-items:center;gap:9px;font-family:'Outfit';font-size:15px;
  font-weight:400;color:var(--charcoal);letter-spacing:.5px;transition:opacity .3s}
.link-arrow::after{content:'→';font-size:18px;transition:transform .3s}
.link-arrow:hover{opacity:.55}
.link-arrow:hover::after{transform:translateX(5px)}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-family:'Outfit';
  font-size:13.5px;font-weight:400;letter-spacing:2px;text-transform:uppercase;cursor:pointer;
  padding:16px 42px;border:1px solid var(--charcoal);background:var(--charcoal);color:#fff;transition:.3s}
.btn:hover{opacity:.78}
.btn.ghost{background:transparent;color:var(--charcoal)}
.btn.ghost:hover{background:var(--charcoal);color:#fff;opacity:1}
.btn.on-dark{border-color:#fff;background:#fff;color:var(--charcoal)}

/* ===== 그리드 유틸 ========================================== */
.grid{display:grid;gap:24px}
.g2{grid-template-columns:1fr}
.g3{grid-template-columns:1fr}
.g4{grid-template-columns:1fr}
@media(min-width:768px){.g2{grid-template-columns:1fr 1fr}.g3{grid-template-columns:repeat(3,1fr)}.g4{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.g4{grid-template-columns:repeat(4,1fr)}}

/* ===== 프로젝트 카드 ======================================== */
.pcard{position:relative;overflow:hidden;background:var(--gray-bg);display:block;border-radius:3px}
.pcard .ph{position:relative;overflow:hidden;aspect-ratio:4/5}
.pcard.wide .ph{aspect-ratio:3/2}
.pcard img{width:100%;height:100%;object-fit:cover;transition:transform 1s cubic-bezier(.2,.7,.2,1)}
.pcard:hover img{transform:scale(1.05)}
.pcard .film{position:absolute;inset:0;background:linear-gradient(to top,rgba(15,13,11,.7) 0%,rgba(15,13,11,.05) 45%,rgba(15,13,11,.15) 100%);pointer-events:none}
.pcard .cat{position:absolute;left:22px;top:20px;z-index:2;font-family:'Outfit';font-size:11px;
  font-weight:500;letter-spacing:3px;text-transform:uppercase;color:#fff;opacity:.9}
.pcard .meta{position:absolute;left:0;right:0;bottom:0;z-index:2;padding:26px 22px}
.pcard .meta h3{font-family:'Pretendard';font-size:18px;font-weight:500;color:#fff;line-height:1.35;margin-bottom:7px}
@media(min-width:1024px){.pcard .meta h3{font-size:19px}}
.pcard .meta .sub{font-family:'Outfit';font-size:12px;letter-spacing:1px;color:rgba(255,255,255,.72);font-weight:300}
.pcard .plus{position:absolute;right:22px;top:20px;z-index:2;width:30px;height:30px;border:1px solid rgba(255,255,255,.5);
  border-radius:50%;color:#fff;display:flex;align-items:center;justify-content:center;font-size:16px;
  opacity:0;transform:scale(.8);transition:.4s}
.pcard:hover .plus{opacity:1;transform:scale(1)}

/* ===== 필터 탭 ============================================== */
.filters{display:flex;flex-wrap:wrap;gap:8px 30px;align-items:center;border-bottom:1px solid var(--gray-line);padding-bottom:22px}
.filter{background:none;border:none;cursor:pointer;font-family:'Outfit';font-size:14px;font-weight:400;
  letter-spacing:1.5px;text-transform:uppercase;color:var(--gray-muted);padding:6px 0;position:relative;transition:color .3s}
.filter .n{font-size:10px;vertical-align:super;margin-left:3px;color:var(--gray-line)}
.filter:hover{color:var(--charcoal)}
.filter.active{color:var(--charcoal)}
.filter.active::after{content:'';position:absolute;left:0;right:0;bottom:-8px;height:1.5px;background:var(--charcoal)}

/* ===== 페이지 헤더(내부 페이지 서브히어로) ================= */
.page-head{padding:150px var(--pad) 0}
@media(min-width:1200px){.page-head{padding:180px var(--pad) 0}}
.page-head .eyebrow{margin-bottom:14px}
.page-head h1{font-family:'Outfit';font-size:44px;font-weight:200;letter-spacing:1px;line-height:1.05;color:var(--charcoal);word-break:keep-all}
@media(min-width:1200px){.page-head h1{font-size:76px}}
.page-head .lead{margin-top:22px;max-width:640px}
.breadcrumb{font-family:'Outfit';font-size:12px;letter-spacing:1px;color:var(--gray-muted);margin-bottom:26px}
.breadcrumb a:hover{color:var(--charcoal)}

/* ===== 프로세스 ============================================= */
.process-grid{display:grid;grid-template-columns:1fr;margin-top:54px}
@media(min-width:768px){.process-grid{grid-template-columns:repeat(4,1fr)}}
.process-item{padding:36px 0;border-top:1px solid var(--gray-line)}
@media(min-width:768px){.process-item{padding:8px 30px 60px 0;border-top:none;border-left:1px solid var(--gray-line);padding-left:30px}
  .process-item:first-child{border-left:none;padding-left:0}}
.process-item .num{font-family:'Outfit';font-size:13px;letter-spacing:2px;color:var(--accent);margin-bottom:26px}
.process-item h3{font-family:'Pretendard';font-size:20px;font-weight:600;color:var(--charcoal);margin-bottom:12px}
.process-item p{font-size:14px;line-height:1.7;color:var(--gray-text);font-weight:300}

/* ===== Differentiator ====================================== */
.diff-item h3{font-family:'Pretendard';font-size:19px;font-weight:600;color:var(--charcoal);
  margin-bottom:16px;padding-bottom:18px;border-bottom:1px solid var(--gray-line)}
.diff-item .no{font-family:'Outfit';font-size:12px;letter-spacing:2px;color:var(--accent);display:block;margin-bottom:14px}
.diff-item p{font-size:15px;line-height:1.75;color:var(--gray-text);font-weight:300}

/* ===== 통계 밴드 =========================================== */
.stat-row{display:grid;grid-template-columns:1fr 1fr;gap:40px 24px}
@media(min-width:768px){.stat-row{grid-template-columns:repeat(4,1fr)}}
.stat .n{font-family:'Outfit';font-size:40px;font-weight:200;color:var(--charcoal);letter-spacing:.5px;line-height:1}
@media(min-width:1200px){.stat .n{font-size:54px}}
.stat .t{font-size:13px;color:var(--gray-text);margin-top:12px;letter-spacing:.5px}

/* ===== 클라이언트 마퀴 ===================================== */
.trust{padding:52px 0;border-top:1px solid var(--gray-line);border-bottom:1px solid var(--gray-line);overflow:hidden}
@keyframes marquee{0%{transform:translateX(0)}100%{transform:translateX(-50%)}}
.marquee{display:flex;width:max-content;animation:marquee 32s linear infinite;gap:64px}
.marquee span{white-space:nowrap;font-family:'Outfit';font-size:15px;font-weight:400;letter-spacing:2px;
  text-transform:uppercase;color:var(--gray-muted)}

/* ===== 폼 ================================================== */
.field{width:100%;padding:14px 0;border:none;border-bottom:1px solid var(--gray-line);background:transparent;
  font-family:'Pretendard';font-size:15px;font-weight:300;color:var(--charcoal);outline:none;transition:border-color .3s}
.field:focus{border-color:var(--charcoal)}
.field::placeholder{color:var(--gray-muted)}
textarea.field{resize:none}
.radio-row{display:flex;gap:22px;flex-wrap:wrap}
.radio-row label{display:flex;align-items:center;gap:7px;cursor:pointer;font-size:14px;color:var(--gray-text)}
.radio-row input{accent-color:var(--charcoal)}
.info-label{font-family:'Outfit';font-size:12px;letter-spacing:3px;text-transform:uppercase;color:var(--gray-muted);margin-bottom:16px}
.info-line{font-size:15px;line-height:1.9;color:var(--charcoal);font-weight:300}

/* ===== FAQ ================================================= */
.faq-item{border-bottom:1px solid var(--gray-line)}
.faq-q{display:flex;justify-content:space-between;align-items:center;gap:18px;padding:20px 0;cursor:pointer;
  font-size:15px;color:var(--charcoal);font-weight:400}
.faq-q .ic{font-size:20px;color:var(--gray-muted);transition:transform .3s}
.faq-a{max-height:0;overflow:hidden;transition:max-height .4s ease}
.faq-a.open{max-height:260px}
.faq-a p{font-size:14px;color:var(--gray-text);line-height:1.7;padding-bottom:20px;font-weight:300}

/* ===== 푸터 =============================================== */
.footer{margin-top:0;border-radius:34px 34px 0 0;background:var(--charcoal);color:#fff;
  padding:74px var(--pad) 40px;position:relative;overflow:hidden}
@media(min-width:1200px){.footer{padding:110px var(--pad) 44px}}
.footer-inner{display:grid;grid-template-columns:1fr;gap:50px}
@media(min-width:1024px){.footer-inner{grid-template-columns:1.2fr 1fr auto;gap:60px}}
.footer-logo{font-family:'Outfit';font-size:26px;font-weight:600;letter-spacing:6px;text-transform:uppercase;margin-bottom:22px}
.footer .tagline{font-size:14px;color:rgba(255,255,255,.6);line-height:1.8;max-width:340px;font-weight:300}
.footer-col h5{font-family:'Outfit';font-size:11px;letter-spacing:2px;text-transform:uppercase;color:rgba(255,255,255,.4);margin-bottom:18px}
.footer-nav{list-style:none}
.footer-nav li{line-height:2.3}
.footer-nav a{font-size:15px;color:rgba(255,255,255,.85);font-weight:300;transition:opacity .3s}
.footer-nav a:hover{opacity:.5}
.footer .info-line{color:rgba(255,255,255,.8)}
.footer-bottom{margin-top:56px;padding-top:22px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px}
.footer-bottom p{font-size:12px;color:rgba(255,255,255,.4);font-weight:300;letter-spacing:.3px}

/* ===== 리빌 애니메이션 ===================================== */
.reveal{opacity:0;transform:translateY(34px);transition:opacity .9s cubic-bezier(.2,.7,.2,1),transform .9s cubic-bezier(.2,.7,.2,1)}
.reveal.active{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}}

/* ===== 카카오 플로팅 ====================================== */
.kakao{position:fixed;bottom:26px;right:26px;width:56px;height:56px;background:#FEE500;border-radius:16px;
  display:flex;align-items:center;justify-content:center;cursor:pointer;z-index:90;
  box-shadow:0 8px 26px rgba(0,0,0,.14);transition:transform .3s}
.kakao:hover{transform:translateY(-4px)}