/* VEXPLOR 홈페이지 시안 v3 — 공통 디자인 시스템 ("다크 캔버스 위의 기술 도면")
   토큰 근거: MBB v3 (디자인_가이드_VEXPLOR.md) 다크 적용 */
:root {
  --bg: #0E0F12; --bg2: #131417; --panel-d: #16171C; --line: rgba(220,216,205,.13); --line2: rgba(220,216,205,.28);
  --tx: #F2F0EC; --tx2: #B3B0A8; --sub: #807E75; --faintd: #6B6A63;
  --navy: #1F2027; --blue: #FFB84D; --teal: #F5A623; --teal-bright: #FFB84D;
  --amber: #F5A623; --red: #E4655F;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
* { box-sizing: border-box; margin: 0; }
html { scroll-behavior: smooth; }
body { font-family: Pretendard, -apple-system, BlinkMacSystemFont, system-ui, sans-serif; background: var(--bg); color: var(--tx); line-height: 1.55; }
img { display: block; max-width: 100%; }
a { text-decoration: none; color: inherit; }
.wrap { max-width: 1280px; margin: 0 auto; padding: 0 40px; }
.mono { font-family: var(--mono); letter-spacing: .08em; }
section { padding: 110px 0; }

/* 섹션 인덱스 헤더 */
.sec-head { border-top: 1px solid var(--line); padding-top: 18px; margin-bottom: 54px; display: flex; justify-content: space-between; align-items: baseline; }
.sec-head .idx { font-family: var(--mono); font-size: 11.5px; letter-spacing: .14em; color: var(--sub); }
.sec-head .idx b { color: var(--teal-bright); font-weight: 600; margin-right: 10px; }
.sec-head .note { font-family: var(--mono); font-size: 10.5px; letter-spacing: .1em; color: var(--faintd); text-transform: uppercase; text-align: right; }
h2.big { font-size: clamp(40px, 4.6vw, 62px); font-weight: 700; letter-spacing: -.028em; line-height: 1.12; margin: 0 0 18px; }
.btn { display: inline-flex; align-items: center; gap: 10px; height: 56px; padding: 0 30px; font-size: 16px; font-weight: 700; border-radius: 0; }
.btn-teal { background: var(--teal); color: #1a1204; }
.btn-line { border: 1px solid var(--line2); color: var(--tx); }

/* GNB */
.gnb { position: sticky; top: 0; z-index: 50; background: rgba(14,15,18,.88); backdrop-filter: blur(12px); border-bottom: 1px solid var(--line); }
.gnb-in { max-width: 1280px; margin: 0 auto; padding: 0 40px; height: 64px; display: flex; align-items: center; gap: 36px; }
.gnb .brand { font-weight: 800; letter-spacing: .06em; color: #fff; font-size: 16px; }
.gnb nav { display: flex; gap: 26px; font-size: 14.5px; font-weight: 600; color: var(--tx2); }
.gnb nav a:hover, .gnb nav a.on { color: #fff; }
.gnb nav a.on { border-bottom: 2px solid var(--teal); padding-bottom: 2px; }
.gnb .right { margin-left: auto; display: flex; align-items: center; gap: 20px; font-size: 13.5px; font-weight: 600; color: var(--sub); }
.gnb .cta { height: 40px; padding: 0 18px; background: var(--teal); color: #1a1204; display: inline-flex; align-items: center; font-weight: 800; font-size: 13.5px; }

/* 서브페이지 히어로 */
.page-hero { padding: 92px 0 70px; border-bottom: 1px solid var(--line); }
.page-hero .k { font-family: var(--mono); font-size: 11.5px; letter-spacing: .2em; color: var(--teal-bright); margin-bottom: 20px; text-transform: uppercase; }
.page-hero h1 { font-size: clamp(44px, 5.4vw, 72px); font-weight: 800; letter-spacing: -.03em; line-height: 1.08; }
.page-hero h1 .thin { display: block; font-weight: 300; color: var(--tx2); }
.page-hero p.sub { max-width: 640px; margin-top: 24px; color: var(--tx2); font-size: 18px; line-height: 1.7; }
.page-hero .meta { margin-top: 30px; font-family: var(--mono); font-size: 10.5px; letter-spacing: .1em; color: var(--faintd); text-transform: uppercase; border-left: 1px solid var(--line2); padding-left: 12px; line-height: 2; }

/* 본문 텍스트 */
.body-txt { color: var(--tx2); font-size: 17.5px; line-height: 1.8; }
.body-txt + .body-txt { margin-top: 20px; }
.body-txt strong { color: #fff; font-weight: 700; }
.lead-d { max-width: 760px; color: var(--tx2); font-size: 18px; line-height: 1.75; margin-bottom: 52px; }
.lead-d strong { color: #fff; }
.src { margin-top: 26px; font-family: var(--mono); font-size: 10.5px; letter-spacing: .08em; color: var(--faintd); text-transform: uppercase; border-left: 1px solid var(--line2); padding-left: 12px; line-height: 1.9; }
.link-more { display: inline-flex; align-items: center; gap: 8px; margin-top: 30px; color: var(--teal-bright); font-size: 15px; font-weight: 700; }
.two { display: grid; grid-template-columns: 1.1fr .9fr; gap: 80px; align-items: center; }
.ph-frame { border: 1px solid var(--line); position: relative; }
.ph-frame .tag { position: absolute; left: 12px; bottom: 12px; font-family: var(--mono); font-size: 9.5px; letter-spacing: .1em; color: var(--sub); background: rgba(14,15,18,.8); padding: 4px 8px; }

/* 도면지 (다크) */
.paper { background: var(--bg); color: var(--tx); border: 1px solid var(--line); padding: 44px 46px 30px; position: relative; }
.paper::before { content: "DWG NO. VX-2026-06 · SCALE NTS"; position: absolute; top: 16px; right: 46px; font-family: var(--mono); font-size: 9.5px; letter-spacing: .12em; color: var(--faintd); }
.paper svg { display: block; width: 100%; height: auto; }
.paper .fig { margin-top: 14px; padding-top: 12px; border-top: 1px solid var(--line); display: flex; justify-content: space-between; font-family: var(--mono); font-size: 10.5px; letter-spacing: .1em; color: var(--sub); text-transform: uppercase; }

/* 대장(ledger) */
.ledger { border-top: 1px solid var(--line2); }
.ledger-row { display: grid; grid-template-columns: 90px 300px 1fr 220px; gap: 28px; align-items: baseline; padding: 26px 6px; border-bottom: 1px solid var(--line); transition: background .15s; }
.ledger-row:hover { background: var(--bg2); }
.ledger-row .no { font-family: var(--mono); font-size: 11px; color: var(--faintd); letter-spacing: .1em; }
.ledger-row .name { font-size: 26px; font-weight: 800; letter-spacing: -.015em; color: #fff; }
.ledger-row .desc { color: var(--tx2); font-size: 15px; line-height: 1.6; }
.ledger-row .spec { font-family: var(--mono); font-size: 10.5px; letter-spacing: .06em; color: var(--sub); text-align: right; line-height: 1.9; text-transform: uppercase; }

/* 서비스 행 */
.svc-row { display: grid; grid-template-columns: 90px 1fr 380px 260px; gap: 28px; align-items: center; padding: 34px 6px; border-bottom: 1px solid var(--line); }
.svc-row:first-of-type { border-top: 1px solid var(--line2); }
.svc-row .no { font-family: var(--mono); font-size: 11px; color: var(--faintd); letter-spacing: .1em; }
.svc-row h3 { font-size: clamp(26px, 2.6vw, 36px); font-weight: 800; letter-spacing: -.02em; color: #fff; display: flex; align-items: center; gap: 12px; }
.badge-new { padding: 4px 9px; background: var(--teal); color: #1a1204; font-family: var(--mono); font-size: 10px; font-weight: 800; letter-spacing: .1em; }
.svc-row p { color: var(--tx2); font-size: 14.5px; line-height: 1.65; }
.svc-row .thumb { height: 130px; background-size: cover; background-position: center; border: 1px solid var(--line); filter: saturate(.85); }
.svc-row .go { font-family: var(--mono); font-size: 11px; letter-spacing: .1em; color: var(--teal-bright); }

/* 증명 스탬프 그리드 */
.proof-grid { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line2); border-left: 1px solid var(--line); }
.pf { border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); padding: 40px 30px 34px; position: relative; }
.pf b { display: block; font-size: clamp(26px, 2.4vw, 36px); font-weight: 800; letter-spacing: -.02em; color: #fff; line-height: 1.15; }
.pf span { display: block; margin-top: 12px; color: var(--tx2); font-size: 13.5px; line-height: 1.55; }
.pf .stamp { position: absolute; top: 18px; right: 18px; font-family: var(--mono); font-size: 9.5px; letter-spacing: .14em; padding: 4px 8px; border: 1px solid var(--teal); color: var(--teal-bright); }
.pf .stamp.spec { border-color: var(--line2); color: var(--sub); }
.proof-cap { margin-top: 22px; font-family: var(--mono); font-size: 10.5px; letter-spacing: .08em; color: var(--faintd); text-transform: uppercase; border-left: 1px solid var(--line2); padding-left: 12px; line-height: 1.9; }

/* 수주 대장 */
.book { border-top: 1px solid var(--line2); }
.book-row { display: grid; grid-template-columns: 70px 1.2fr 1.6fr 170px 100px; gap: 20px; padding: 16px 6px; border-bottom: 1px solid var(--line); font-size: 14.5px; align-items: baseline; }
.book-row.head { font-family: var(--mono); font-size: 10px; letter-spacing: .14em; color: var(--faintd); text-transform: uppercase; border-bottom: 1px solid var(--line2); }
.book-row .no { font-family: var(--mono); font-size: 10.5px; color: var(--faintd); }
.book-row .cust { font-weight: 700; color: #fff; }
.book-row .what { color: var(--tx2); }
.book-row .when { font-family: var(--mono); font-size: 11px; color: var(--sub); }
.book-row .st { font-family: var(--mono); font-size: 10px; letter-spacing: .1em; }
.st.done { color: var(--teal-bright); }
.st.live { color: var(--amber); }

/* 사례 카드 */
.cases { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; margin-top: 56px; }
.case-card { border: 1px solid var(--line); background: var(--bg2); }
.case-card .ph { height: 176px; background-size: cover; background-position: center; position: relative; filter: saturate(.85); }
.case-card .ph em { position: absolute; right: 10px; bottom: 10px; font-family: var(--mono); font-size: 9px; letter-spacing: .08em; font-style: normal; padding: 3px 7px; background: rgba(14,15,18,.85); color: var(--sub); }
.case-card .tx { padding: 22px 24px 26px; }
.case-card .meta { font-family: var(--mono); font-size: 10px; letter-spacing: .12em; color: var(--sub); margin-bottom: 12px; text-transform: uppercase; }
.case-card .meta i { font-style: normal; color: var(--amber); }
.case-card h3 { font-size: 18px; font-weight: 800; color: #fff; letter-spacing: -.01em; }
.case-card p { margin-top: 10px; color: var(--tx2); font-size: 13.5px; line-height: 1.6; }

/* FAQ */
.faq details { border-bottom: 1px solid var(--line); }
.faq details:first-child { border-top: 1px solid var(--line2); }
.faq summary { cursor: pointer; list-style: none; padding: 22px 4px; font-size: 17px; font-weight: 700; color: #fff; display: flex; justify-content: space-between; gap: 20px; }
.faq summary::after { content: "+"; color: var(--teal-bright); font-weight: 400; font-size: 20px; flex-shrink: 0; }
.faq details[open] summary::after { content: "\2013"; }
.faq .a { padding: 0 4px 24px; color: var(--tx2); font-size: 15px; line-height: 1.75; max-width: 860px; }

/* 스텝·카드 공통 */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line2); border-left: 1px solid var(--line); }
.step { border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); padding: 34px 28px; }
.step .n { font-family: var(--mono); font-size: 11px; letter-spacing: .12em; color: var(--teal-bright); }
.step h3 { margin-top: 14px; font-size: 20px; font-weight: 800; color: #fff; }
.step p { margin-top: 10px; color: var(--tx2); font-size: 14.5px; line-height: 1.65; }
.grid5 { grid-template-columns: repeat(5, 1fr); }
.grid4 { grid-template-columns: repeat(4, 1fr); }
.grid2 { grid-template-columns: repeat(2, 1fr); }

/* 데이터 표 (기간·비교) */
.dtable { width: 100%; border-collapse: collapse; border-top: 1px solid var(--line2); }
.dtable th { font-family: var(--mono); font-size: 10px; letter-spacing: .14em; color: var(--faintd); text-transform: uppercase; text-align: left; padding: 14px 10px; border-bottom: 1px solid var(--line2); font-weight: 600; }
.dtable td { padding: 18px 10px; border-bottom: 1px solid var(--line); font-size: 15px; color: var(--tx2); vertical-align: top; }
.dtable td.k { color: #fff; font-weight: 700; }
.dtable td .m { font-family: var(--mono); font-size: 11px; color: var(--sub); }

/* 폼 */
.form { display: grid; gap: 18px; max-width: 560px; }
.form label { display: block; font-family: var(--mono); font-size: 10.5px; letter-spacing: .12em; color: var(--sub); text-transform: uppercase; margin-bottom: 8px; }
.form label em { color: var(--teal-bright); font-style: normal; }
.form input, .form select, .form textarea { width: 100%; background: var(--bg2); border: 1px solid var(--line2); color: var(--tx); font-family: inherit; font-size: 15.5px; padding: 14px 16px; border-radius: 0; }
.form input:focus, .form select:focus { outline: 1px solid var(--teal); }
.tags { display: flex; flex-wrap: wrap; gap: 8px; }
.tags span { padding: 9px 14px; border: 1px solid var(--line2); color: var(--tx2); font-size: 13.5px; font-weight: 600; cursor: pointer; }
.tags span.on { border-color: var(--teal); color: var(--teal-bright); }

/* 하단 CTA 밴드 */
.cta-band { border-top: 1px solid var(--line2); padding: 84px 0; }
.cta-band h2 { font-size: clamp(34px, 3.6vw, 52px); font-weight: 800; letter-spacing: -.025em; }
.cta-band .row { display: flex; align-items: center; justify-content: space-between; gap: 40px; flex-wrap: wrap; }
.cta-band p { margin-top: 12px; color: var(--tx2); font-size: 16.5px; }

/* 푸터 */
footer { border-top: 1px solid var(--line2); padding: 64px 0 44px; background: var(--bg); }
.ft { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.6fr; gap: 44px; }
.ft .brand { font-weight: 800; letter-spacing: .06em; color: #fff; margin-bottom: 16px; }
.ft .tag { color: var(--tx2); font-size: 14px; line-height: 1.7; }
.ft h4 { font-family: var(--mono); font-size: 10px; font-weight: 600; letter-spacing: .16em; color: var(--faintd); margin-bottom: 14px; text-transform: uppercase; }
.ft ul { list-style: none; padding: 0; }
.ft li { margin-bottom: 9px; font-size: 14px; color: var(--tx2); font-weight: 500; }
footer .legal { padding-top: 20px; border-top: 1px solid var(--line); display: flex; justify-content: space-between; font-family: var(--mono); font-size: 10px; letter-spacing: .08em; color: var(--faintd); }
.ft + .legal, .ft ~ .legal { margin-top: 48px; }
footer .legal a { color: var(--sub); }

@media (max-width: 1000px) {
  .proof-grid, .cases, .steps { grid-template-columns: 1fr 1fr; }
  .two, .ft, .grid5, .grid4 { grid-template-columns: 1fr; }
  .ledger-row, .svc-row, .book-row { grid-template-columns: 1fr; gap: 8px; }
  .gnb nav { display: none; }
}

/* GNB 드롭다운 */
.gnb .has-sub { position: relative; display: inline-flex; }
.gnb .has-sub > a::after { content: "\25BE"; margin-left: 6px; font-size: 9px; color: var(--faintd); }
.gnb .sub { display: none; position: absolute; top: 100%; left: -18px; min-width: 250px; padding: 10px 0 12px; background: rgba(14,15,18,.98); border: 1px solid var(--line2); backdrop-filter: blur(12px); }
.gnb .has-sub:hover .sub, .gnb .has-sub:focus-within .sub { display: block; }
.gnb .sub a { display: block; padding: 9px 20px; font-size: 13.5px; color: var(--tx2); border-bottom: 0; }
.gnb .sub a:hover { color: #fff; background: var(--bg2); }
.gnb .sub .grp { display: block; padding: 10px 20px 4px; font-family: var(--mono); font-size: 9px; letter-spacing: .16em; color: var(--faintd); text-transform: uppercase; }
.gnb .sub a .m { font-family: var(--mono); font-size: 10px; color: var(--faintd); margin-right: 8px; }

/* 모바일 GNB — 햄버거 + 드로어 (nav.js) */
.nav-burger { display: none; margin-left: auto; width: 44px; height: 44px; background: none; border: 0; cursor: pointer; padding: 10px; flex-direction: column; justify-content: center; gap: 5px; }
.nav-burger span { display: block; height: 2px; background: var(--tx); transition: transform .2s, opacity .2s; }
.nav-drawer { display: none; }
@media (max-width: 1000px) {
  .gnb .right { display: none; }
  .nav-burger { display: flex; }
  .nav-open .nav-burger span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-open .nav-burger span:nth-child(2) { opacity: 0; }
  .nav-open .nav-burger span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
  .nav-drawer { display: none; position: fixed; top: 64px; left: 0; right: 0; bottom: 0; background: rgba(14,15,18,.98); backdrop-filter: blur(12px); overflow-y: auto; z-index: 49; }
  .nav-open .nav-drawer { display: block; }
  .nav-open body, html.nav-open { overflow: hidden; }
  .nav-drawer-in { padding: 18px 28px 60px; }
  .nav-drawer .nd-top { display: block; padding: 15px 0; font-size: 17px; font-weight: 700; color: var(--tx); border-bottom: 1px solid var(--line); }
  .nav-drawer .nd-top.on { color: var(--teal-bright); }
  .nav-drawer .nd-grp { padding: 22px 0 8px; font-family: var(--mono); font-size: 10px; letter-spacing: .18em; color: var(--teal-bright); text-transform: uppercase; }
  .nav-drawer .nd-sub { display: block; padding: 11px 0 11px 14px; font-size: 15px; font-weight: 600; color: var(--tx2); border-left: 1px solid var(--line2); }
  .nav-drawer .nd-sub .m { font-family: var(--mono); font-size: 10px; color: var(--faintd); margin-right: 8px; }
  .nav-drawer .nd-foot { margin-top: 30px; padding-top: 22px; border-top: 1px solid var(--line2); display: flex; flex-wrap: wrap; gap: 16px; align-items: center; font-size: 14px; font-weight: 600; color: var(--sub); }
  .nav-drawer .nd-foot .cta { height: 44px; padding: 0 20px; background: var(--teal); color: #1a1204; display: inline-flex; align-items: center; font-weight: 800; }
}

/* 모바일 강제 스택 — 페이지 로컬 <style>·인라인 grid-template-columns가 소스 순서로
   위 미디어 규칙을 이기는 문제를 !important로 차단 (2026-07-03 모바일 감사) */
@media (max-width: 1000px) {
  .ledger-row, .svc-row, .book-row, .anon, .demo-grid, .roadmap-row, .detail .grid { grid-template-columns: 1fr !important; }
  .steps, .grid4, .grid5, .proof-grid { grid-template-columns: 1fr 1fr !important; }
  table { display: block; overflow-x: auto; }
}
@media (max-width: 1000px) {
  /* wrap 밖 목업 스테이지 — 모바일 좌우 여백 (페이지 로컬 padding 지정을 이김) */
  .stage { padding-left: 24px !important; padding-right: 24px !important; }
}
@media (max-width: 640px) {
  .steps, .grid4, .grid5, .cases, .proof-grid { grid-template-columns: 1fr !important; }
  .wrap { padding-left: 24px; padding-right: 24px; }
  .gnb-in { padding: 0 24px; }
  .hero-in { padding-left: 24px; padding-right: 24px; }
  .page-hero .wrap { padding-left: 24px; padding-right: 24px; }
}

/* 모바일 표 → 행 단위 카드 스택 (760px 이하) — 761~1000px는 위 규칙의 제자리 스크롤 유지 */
@media (max-width: 760px) {
  .dtable, .tbl3, .legal-wrap table { display: block; border: 0; overflow: visible; }
  .dtable tr, .tbl3 tr, .legal-wrap table tr { display: block; border: 1px solid var(--line); margin-bottom: 16px; padding: 6px 18px 16px; }
  .dtable tr:first-child, .tbl3 tr:first-child, .legal-wrap table tr:first-child { display: none; }
  .dtable td, .tbl3 td, .legal-wrap table td { display: block; border: 0 !important; width: auto !important; padding: 12px 0 2px; }
  .dtable td.k, .tbl3 td.k { font-family: inherit; font-size: 16px; font-weight: 800; color: #fff; text-transform: none; letter-spacing: 0; border-bottom: 1px solid var(--line2) !important; padding: 14px 0 12px; }
  td[data-label]::before { content: attr(data-label); display: block; font-family: var(--mono); font-size: 9.5px; letter-spacing: .12em; color: var(--teal-bright); text-transform: uppercase; margin-bottom: 5px; }
  td.k[data-label]::before { display: none; }
  /* about 개요 대장 — 라벨 위, 값 아래 */
  .info-tbl td { display: block; padding: 4px 0; }
  .info-tbl td.k { width: auto; padding: 16px 0 2px; }
  .info-tbl tr { display: block; border-bottom: 1px solid var(--line); padding-bottom: 12px; }
  .info-tbl tr td:last-child { border-bottom: 0; }
}