/* ══════════════════════════════════════════════════════════════
   page.css — 사업분야 상세페이지 공통 스타일시트
   index.html <style> 블록의 토큰·RESET·.sr·NAV·FOOTER 를 그대로 옮기고
   상세페이지 전용 컴포넌트를 추가한다. (index.html 은 수정하지 않는다)
══════════════════════════════════════════════════════════════ */

/* ══════════════════════════════════
   TOKENS — Light Theme
══════════════════════════════════ */
:root {
  --navy:    #0d2044;
  --navy2:   #1b3a6b;
  --red:     #c41e1e;
  --gold:    #b8902a;
  --white:   #ffffff;
  --bg:      #f4f6fb;
  --bg2:     #edf0f8;
  --ink:     #0d1e3a;
  --gray:    #5a6a82;
  --border:  #dde3ef;
  --ease:    cubic-bezier(.4,0,.2,1);

  /* 히어로 그라데이션 — 각 상세페이지에서 재정의한다 */
  --h1: #0d2044;
  --h2: #1b3a6b;
}

/* ══════════════════════════════════
   RESET
══════════════════════════════════ */
*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior:smooth; }
body {
  font-family:'Pretendard', sans-serif;
  background:var(--white);
  color:var(--ink);
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  word-break:keep-all;
}
a { text-decoration:none; color:inherit; }
ul { list-style:none; }

/* ══════════════════════════════════
   SCROLL REVEAL
══════════════════════════════════ */
.sr { opacity:0; transform:translateY(28px); transition:opacity .75s var(--ease), transform .75s var(--ease); }
.sr.left  { transform:translateX(-28px); }
.sr.right { transform:translateX( 28px); }
.sr.on    { opacity:1; transform:none; }

/* ══════════════════════════════════
   ── NAV ──
══════════════════════════════════ */
#nav {
  position:fixed; top:0; left:0; right:0; z-index:500;
  height:68px;
  display:flex; align-items:center; justify-content:space-between;
  padding:0 5%;
  background:rgba(255,255,255,.0);
  transition:background .4s, box-shadow .4s;
}
#nav.scrolled {
  background:rgba(255,255,255,.97);
  box-shadow:0 1px 0 var(--border), 0 4px 20px rgba(13,32,68,.06);
  backdrop-filter:blur(16px);
}
#nav.scrolled .logo-ko { color:var(--navy); }
#nav.scrolled .nav-link { color:var(--gray); }
#nav.scrolled .nav-link:hover { color:var(--navy); }
#nav.scrolled .ham span { background:var(--navy); }

/* Logo */
.logo { display:flex; align-items:center; gap:10px; }
.logo-img {
  height:34px; width:auto; flex-shrink:0;
  display:block;
  filter:drop-shadow(0 1px 3px rgba(0,0,0,.2));
}
.logo-ko {
  font-family:'Pretendard',sans-serif;
  font-size:.98rem; font-weight:800;
  letter-spacing:-.02em; color:#fff;
  transition:color .3s; line-height:1;
}
.logo-ko em { color:inherit; font-style:normal; }

/* Nav links */
.nav-center { display:flex; align-items:center; gap:28px; }
.nav-link {
  font-size:.8rem; font-weight:500; letter-spacing:.08em;
  color:rgba(255,255,255,.8); transition:color .2s;
  position:relative;
}
.nav-link::after {
  content:''; position:absolute; bottom:-3px; left:0; right:0;
  height:2px; background:var(--red);
  transform:scaleX(0); transform-origin:left; transition:transform .25s;
}
.nav-link:hover { color:#fff; }
.nav-link:hover::after { transform:scaleX(1); }

/* Nav right */
.nav-right { display:flex; align-items:center; gap:10px; }

/* 문의하기 버튼 */
.nav-contact {
  padding:8px 20px;
  background:#1a3a6b; border-radius:2px;
  font-size:.78rem; font-weight:700; letter-spacing:.05em;
  color:#fff; transition:background .2s;
}
.nav-contact:hover { background:#0d2044; }

/* ★ 종합정보시스템 버튼 ★ */
.nav-erp {
  display:flex; align-items:center; gap:7px;
  padding:8px 16px;
  border:1.5px solid rgba(255,255,255,.35);
  border-radius:2px;
  font-size:.75rem; font-weight:600; letter-spacing:.06em;
  color:rgba(255,255,255,.85);
  transition:border-color .2s, color .2s, background .2s;
  cursor:pointer; background:transparent;
  font-family:'Pretendard',sans-serif;
}
.nav-erp:hover {
  border-color:#fff; color:#fff;
  background:rgba(255,255,255,.08);
}
#nav.scrolled .nav-erp {
  border-color:var(--navy2); color:var(--navy);
}
#nav.scrolled .nav-erp:hover {
  background:var(--navy); color:#fff; border-color:var(--navy);
}
.erp-dot {
  width:6px; height:6px; border-radius:50%;
  background:#4caf9e;
  box-shadow:0 0 0 0 rgba(76,175,158,.4);
  animation:ping 2s ease-in-out infinite;
}
@keyframes ping {
  0%,100%{ box-shadow:0 0 0 0 rgba(76,175,158,.5); }
  50%    { box-shadow:0 0 0 5px rgba(76,175,158,.0); }
}

/* Hamburger */
.ham { display:none; flex-direction:column; gap:5px; cursor:pointer; }
.ham span { width:22px; height:2px; background:#fff; border-radius:2px; transition:.3s; }

/* Mobile menu */
#mob-menu {
  display:none; position:fixed; inset:0; z-index:490;
  background:rgba(13,32,68,.97); backdrop-filter:blur(20px);
  flex-direction:column; align-items:center; justify-content:center; gap:36px;
}
#mob-menu.open { display:flex; }
#mob-menu a, #mob-menu button {
  font-family:'Pretendard',sans-serif;
  font-size:1.6rem; font-weight:800;
  color:rgba(255,255,255,.6); transition:color .2s;
  background:none; border:none; cursor:pointer;
}
#mob-menu a:hover, #mob-menu button:hover { color:#fff; }

/* ══════════════════════════════════
   SECTION BASE
══════════════════════════════════ */
.stag {
  font-family:'Playfair Display', serif;
  font-size:.88rem; font-style:italic; font-weight:700;
  letter-spacing:.02em; color:var(--red);
  margin-bottom:14px; display:block;
}
.stitle {
  font-family:'Pretendard', sans-serif;
  font-size:clamp(1.5rem,2.8vw,2.2rem);
  font-weight:800; letter-spacing:-.04em; line-height:1.2;
  color:var(--navy);
}
.sdesc { font-size:.88rem; color:var(--gray); line-height:1.85; font-weight:300; }

/* ══════════════════════════════════
   ── FOOTER ──
══════════════════════════════════ */
footer {
  background:var(--navy); padding:52px 6% 36px;
}
.footer-in { max-width:1100px; margin:0 auto; }
.footer-top {
  display:flex; justify-content:space-between; align-items:flex-start;
  padding-bottom:32px; border-bottom:1px solid rgba(255,255,255,.08);
  flex-wrap:wrap; gap:28px;
}
.footer-ko {
  font-family:'Pretendard',sans-serif;
  font-size:1rem; font-weight:800; color:#fff; margin-bottom:3px;
}
.footer-ko em { color:inherit; font-style:normal; }
.footer-en {
  font-family:'Barlow Condensed',sans-serif;
  font-size:.65rem; letter-spacing:.18em;
  color:rgba(255,255,255,.35); margin-bottom:12px;
}
.footer-addr { font-size:.74rem; color:rgba(255,255,255,.3); line-height:1.9; }
.footer-logo-wrap { display:flex; align-items:center; gap:10px; margin-bottom:6px; }
.footer-logo-img { height:30px; width:auto; }
.footer-nav { display:flex; gap:24px; flex-wrap:wrap; align-items:flex-start; }
.footer-nav a { font-size:.74rem; color:rgba(255,255,255,.35); transition:color .2s; }
.footer-nav a:hover { color:#fff; }
.footer-btm {
  display:flex; justify-content:space-between; align-items:center;
  padding-top:22px; flex-wrap:wrap; gap:12px;
}
.footer-copy { font-size:.68rem; color:rgba(255,255,255,.2); }
.footer-erp-link {
  font-size:.7rem; color:rgba(255,255,255,.3);
  display:flex; align-items:center; gap:6px;
  cursor:pointer; transition:color .2s;
  border:none; background:none;
  font-family:'Pretendard',sans-serif;
}
.footer-erp-link:hover { color:rgba(255,255,255,.7); }
.footer-erp-dot { width:5px; height:5px; border-radius:50%; background:#4caf9e; }

/* ══════════════════════════════════
   ── PAGE HERO ──
══════════════════════════════════ */
.pg-hero {
  position:relative;
  min-height:380px;
  padding:140px 5% 64px;
  display:flex; flex-direction:column; justify-content:flex-end;
  background:linear-gradient(135deg, var(--h1), var(--h2));
  overflow:hidden;
}
.pg-hero::before {
  content:''; position:absolute; inset:0;
  opacity:.12; pointer-events:none;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160' viewBox='0 0 160 160'%3E%3Cg fill='none' stroke='%23ffffff' stroke-width='1'%3E%3Cpath d='M0 40h160M0 80h160M0 120h160M40 0v160M80 0v160M120 0v160' stroke-opacity='.55'/%3E%3Cpath d='M-20 132c34-46 78-46 112-12s66 32 96-14' stroke-width='1.6'/%3E%3Cpath d='M-20 100c34-46 78-46 112-12s66 32 96-14' stroke-width='1.6'/%3E%3Cpath d='M-20 68c34-46 78-46 112-12s66 32 96-14' stroke-width='1.6'/%3E%3C/g%3E%3C/svg%3E");
  background-size:160px 160px;
}
.pg-hero-in {
  position:relative; z-index:1;
  max-width:1180px; margin:0 auto; width:100%;
}
.pg-crumb {
  display:flex; align-items:center; flex-wrap:wrap; gap:8px;
  font-size:.72rem; letter-spacing:.06em;
  color:rgba(255,255,255,.45);
  margin-bottom:26px;
}
.pg-crumb a { transition:color .2s; }
.pg-crumb a:hover { color:#fff; }
.pg-crumb .sep { color:rgba(255,255,255,.25); }
.pg-crumb .cur { color:rgba(255,255,255,.85); font-weight:600; }

.pg-no {
  font-family:'Barlow Condensed',sans-serif;
  font-size:clamp(3.4rem,8vw,5.4rem);
  font-weight:700; line-height:.9;
  color:rgba(255,255,255,.16);
  letter-spacing:-.02em;
  margin-bottom:6px;
}
.pg-en {
  font-family:'Barlow Condensed',sans-serif;
  font-size:.72rem; font-weight:600; letter-spacing:.22em;
  color:var(--gold);
  margin-bottom:12px;
}
.pg-title {
  font-family:'Pretendard',sans-serif;
  font-size:clamp(1.7rem,4vw,2.7rem);
  font-weight:800; letter-spacing:-.04em; line-height:1.25;
  color:#fff;
  margin-bottom:20px;
}
.pg-lead {
  max-width:760px;
  font-size:.9rem; font-weight:300; line-height:1.9;
  color:rgba(255,255,255,.62);
  padding-top:20px;
  border-top:1px solid rgba(255,255,255,.14);
}

/* ══════════════════════════════════
   ── PAGE SECTION ──
══════════════════════════════════ */
.pg-sec { padding:90px 0; }
.pg-sec.alt { background:var(--bg); }
.pg-inner { max-width:1180px; margin:0 auto; padding:0 24px; }
.pg-hd { margin-bottom:44px; }

/* ── 개요 ── */
.ov-body { max-width:820px; }
.ov-body p { font-size:.9rem; color:var(--gray); line-height:2.05; font-weight:300; }
.ov-body p + p { margin-top:20px; }

/* ── 세부 업무 카드 ── */
.item-grid {
  display:grid; grid-template-columns:repeat(auto-fit, minmax(320px,1fr));
  gap:20px;
}
.item {
  position:relative;
  background:#fff;
  border:1px solid var(--border);
  border-left:3px solid var(--navy2);
  border-radius:8px;
  padding:26px 26px 24px;
  transition:transform .25s var(--ease), box-shadow .25s var(--ease), border-left-color .25s;
}
.item:hover {
  transform:translateY(-4px);
  box-shadow:0 12px 32px rgba(13,32,68,.10);
  border-left-color:var(--red);
}
.item-no {
  font-family:'Barlow Condensed',sans-serif;
  font-size:.78rem; font-weight:700; letter-spacing:.14em;
  color:var(--red);
  margin-bottom:8px;
}
.item-t {
  font-size:1rem; font-weight:700; color:var(--navy);
  letter-spacing:-.02em; margin-bottom:10px;
}
.item-d { font-size:.84rem; color:var(--gray); line-height:1.85; font-weight:300; }

/* ── 4대 평가항목 ── */
.eval-grid {
  display:grid; grid-template-columns:repeat(4,1fr);
  gap:20px;
}
.eval {
  background:#fff;
  border:1px solid var(--border);
  border-radius:8px;
  padding:28px 24px 26px;
  transition:transform .25s var(--ease), box-shadow .25s var(--ease);
}
.eval:hover { transform:translateY(-4px); box-shadow:0 12px 32px rgba(13,32,68,.10); }
.eval-no {
  font-family:'Barlow Condensed',sans-serif;
  font-size:1.9rem; font-weight:700; line-height:1;
  color:var(--bg2);
  margin-bottom:14px;
  transition:color .25s;
}
.eval:hover .eval-no { color:var(--gold); }
.eval-t {
  font-size:.94rem; font-weight:700; color:var(--navy);
  letter-spacing:-.02em; margin-bottom:10px; line-height:1.4;
}
.eval-d { font-size:.82rem; color:var(--gray); line-height:1.85; font-weight:300; }

/* ── 수치해석 4종 ── */
.num-grid { display:grid; grid-template-columns:repeat(2,1fr); gap:20px; }
.num {
  background:#fff;
  border:1px solid var(--border);
  border-radius:8px;
  padding:28px 28px 26px;
}
.num-t {
  display:flex; align-items:center; gap:10px;
  font-size:.96rem; font-weight:700; color:var(--navy);
  letter-spacing:-.02em; margin-bottom:12px;
}
.num-t::before {
  content:''; width:6px; height:6px; border-radius:50%;
  background:var(--gold); flex-shrink:0;
}
.num-d { font-size:.84rem; color:var(--gray); line-height:1.95; font-weight:300; }

/* ── 프로세스 타임라인 ── */
.proc { position:relative; padding-left:52px; }
.proc::before {
  content:''; position:absolute; left:17px; top:8px; bottom:8px;
  width:1px; background:var(--border);
}
.proc-step { position:relative; padding-bottom:30px; }
.proc-step:last-child { padding-bottom:0; }
.proc-step::before {
  content:attr(data-no);
  position:absolute; left:-52px; top:-2px;
  width:36px; height:36px; border-radius:50%;
  background:var(--navy); color:#fff;
  font-family:'Barlow Condensed',sans-serif;
  font-size:.86rem; font-weight:700; letter-spacing:.04em;
  display:flex; align-items:center; justify-content:center;
  box-shadow:0 0 0 5px var(--white);
}
.pg-sec.alt .proc-step::before { box-shadow:0 0 0 5px var(--bg); }
.proc-t {
  font-size:.96rem; font-weight:700; color:var(--navy);
  letter-spacing:-.02em; margin-bottom:7px;
}
.proc-d { font-size:.84rem; color:var(--gray); line-height:1.8; font-weight:300; }

/* ── 도판(figure) 2열 — 모바일 1열 ── */
.slope-proc { margin-top:40px; }
.fig-grid { display:grid; grid-template-columns:repeat(2,1fr); gap:20px; margin-top:48px; }
.fig { margin:0; background:#fff; border:1px solid var(--border); border-radius:8px; padding:12px;
  display:grid; grid-row:span 2; grid-template-rows:subgrid; row-gap:10px; }
.fig img { display:block; width:100%; height:auto; border-radius:4px; align-self:center; }
.fig figcaption { font-size:.78rem; color:var(--gray); line-height:1.6; }
.slope-close { margin-top:36px; }

/* ── 발주처 카드 건수 / 수행 지역 태그 ── */
.eval-meta { display:block; margin-top:12px; font-size:.78rem; font-weight:600; color:var(--navy2); line-height:1.6; }
.region-tags { margin-top:32px; }
.region-label { font-size:.8rem; font-weight:700; color:var(--navy); margin:20px 0 10px; }
.region-label:first-child { margin-top:0; }

/* ── 성과품 태그 ── */
.deliv { display:flex; flex-wrap:wrap; gap:10px; }
.deliv span {
  padding:9px 18px;
  background:#fff;
  border:1px solid var(--border);
  border-radius:999px;
  font-size:.82rem; font-weight:500; color:var(--ink);
  transition:border-color .2s, color .2s, background .2s;
}
.deliv span:hover { border-color:var(--navy2); color:var(--navy); background:var(--bg2); }

/* ── 이전 / 다음 ── */
.pg-nav {
  display:grid; grid-template-columns:1fr 1fr;
  border-top:1px solid var(--border);
  border-bottom:1px solid var(--border);
}
.pg-nav a {
  padding:34px 28px;
  display:flex; flex-direction:column; gap:7px;
  transition:background .25s;
}
.pg-nav a:hover { background:var(--bg); }
.pg-nav .nx { align-items:flex-end; text-align:right; border-left:1px solid var(--border); }
.pg-nav .lb {
  font-family:'Barlow Condensed',sans-serif;
  font-size:.7rem; font-weight:600; letter-spacing:.16em;
  color:var(--gray);
  display:flex; align-items:center; gap:8px;
}
.pg-nav .ar { display:inline-block; transition:transform .25s var(--ease); color:var(--red); }
.pg-nav .pv:hover .ar { transform:translateX(-5px); }
.pg-nav .nx:hover .ar { transform:translateX(5px); }
.pg-nav .tt {
  font-size:1rem; font-weight:700; color:var(--navy);
  letter-spacing:-.02em;
}

/* NEXT 만 있는 페이지(01) 대응 — 자식 1개일 때만 매칭 */
.pg-nav a:only-child { grid-column:1 / -1; }
.pg-nav .nx:only-child { border-left:none; }

/* ── CTA 밴드 ── */
.pg-cta {
  background:var(--navy);
  padding:70px 24px;
  text-align:center;
}
.pg-cta h2 {
  font-size:clamp(1.3rem,2.6vw,1.9rem);
  font-weight:800; letter-spacing:-.03em; color:#fff;
  margin-bottom:14px;
}
.pg-cta p {
  font-size:.88rem; font-weight:300; line-height:1.9;
  color:rgba(255,255,255,.55);
  max-width:640px; margin:0 auto 30px;
}
.pg-cta-btn {
  display:inline-flex; align-items:center; gap:10px;
  padding:14px 34px;
  background:var(--red); border-radius:2px;
  font-size:.85rem; font-weight:700; letter-spacing:.05em; color:#fff;
  transition:background .2s, transform .2s var(--ease);
}
.pg-cta-btn:hover { background:#a11818; transform:translateY(-2px); }
.pg-cta-btn .ar { display:inline-block; transition:transform .25s var(--ease); }
.pg-cta-btn:hover .ar { transform:translateX(4px); }

/* ══════════════════════════════════
   RESPONSIVE
══════════════════════════════════ */
@media (max-width:960px) {
  .nav-center, .nav-contact { display:none; }
  .nav-erp { font-size:.7rem; padding:7px 12px; }
  .ham { display:flex; }
  .eval-grid { grid-template-columns:repeat(2,1fr); }
}
@media (max-width:640px) {
  .pg-hero { min-height:300px; padding:110px 5% 44px; }
  .pg-lead { font-size:.85rem; }
  .pg-sec { padding:60px 0; }
  .pg-hd { margin-bottom:32px; }
  .item-grid { grid-template-columns:1fr; }
  .eval-grid { grid-template-columns:1fr; }
  .num-grid { grid-template-columns:1fr; }
  .proc { padding-left:44px; }
  .proc::before { left:15px; }
  .proc-step::before { left:-44px; width:32px; height:32px; font-size:.8rem; }
  .fig-grid { grid-template-columns:1fr; }
  .pg-nav { grid-template-columns:1fr; }
  .pg-nav .nx { border-left:none; border-top:1px solid var(--border); align-items:flex-start; text-align:left; }
  .pg-nav .nx:only-child { border-top:none; }
  .pg-nav a { padding:26px 22px; }
  .pg-cta { padding:56px 22px; }
}

/* ══════════════════════════════════
   FAQ (SEO/GEO 블록 공용)
══════════════════════════════════ */
.faq-sec { padding:90px 0; background:var(--bg); }
.faq-wrap { max-width:900px; margin:0 auto; padding:0 24px; }
.faq-title { font-size:1.7rem; font-weight:800; color:var(--ink); margin-bottom:34px; text-align:center; }
.faq { display:flex; flex-direction:column; gap:12px; }
.faq-item { background:#fff; border:1px solid var(--border); border-radius:12px; padding:0 22px; overflow:hidden; }
.faq-item summary {
  list-style:none; cursor:pointer; padding:20px 0;
  font-size:1rem; font-weight:700; color:var(--ink);
  display:flex; align-items:center; gap:12px; position:relative; padding-right:34px;
}
.faq-item summary::-webkit-details-marker { display:none; }
.faq-item summary::before { content:'Q'; color:var(--gold); font-weight:800; font-size:1.05rem; }
.faq-item summary::after {
  content:'+'; position:absolute; right:4px; top:50%; transform:translateY(-50%);
  font-size:1.4rem; font-weight:400; color:var(--gold); transition:transform .2s var(--ease);
}
.faq-item[open] summary::after { transform:translateY(-50%) rotate(45deg); }
.faq-a {
  padding:18px 0 22px 28px; font-size:.92rem; line-height:1.9; color:var(--gray);
  border-top:1px solid var(--border);
}
@media (max-width:640px) {
  .faq-sec { padding:60px 0; }
  .faq-title { font-size:1.4rem; }
}