/* =====================================================
   SHINWOO — Global Stylesheet
   Design: White + Deep Navy, Premium Engineering
   ===================================================== */

/* ── Reset & Base ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --navy:       #0B1C3D;
  --navy-mid:   #142952;
  --navy-light: #1E3A6E;
  --accent:     #1B4FBF;
  --accent-lt:  #2E66D8;
  --gold:       #C9A84C;
  --white:      #FFFFFF;
  --off-white:  #F7F8FA;
  --gray-100:   #F2F4F7;
  --gray-200:   #E8ECF2;
  --gray-400:   #9AA3B5;
  --gray-600:   #5A6478;
  --gray-800:   #2C3347;
  --text:       #1A2236;

  --font-sans:  'Inter', 'Noto Sans KR', sans-serif;
  --radius-sm:  6px;
  --radius-md:  12px;
  --radius-lg:  20px;

  --shadow-sm:  0 2px 12px rgba(11,28,61,.06);
  --shadow-md:  0 6px 28px rgba(11,28,61,.10);
  --shadow-lg:  0 16px 56px rgba(11,28,61,.16);
  --shadow-xl:  0 24px 80px rgba(11,28,61,.22);

  --max-w:      1280px;
  --header-h:   100px;
  --transition: .3s cubic-bezier(.4,0,.2,1);
}

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font-sans);
  color: var(--text);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; display: block; }


/* ─────────────────────────────────────────
   HEADER
───────────────────────────────────────── */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-h);
  background: rgba(255,255,255,.96);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  z-index: 1000;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.header.scrolled {
  border-bottom-color: var(--gray-200);
  box-shadow: var(--shadow-sm);
}

.header-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  height: 100%;
  padding: 0 40px;
  display: flex;
  align-items: center;
  gap: 48px;
}

/* Logo */
.logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  text-decoration: none;
  padding-left: 0;
  margin-right: auto;
}
.logo img,
.logo-img {
  height: 42px;
  width: auto;
  max-width: 220px;
  display: block;
  object-fit: contain;
  object-position: left center;
  overflow: visible;
}
/* 인라인 SVG 로고 전용 */
.logo svg.logo-img {
  height: 42px;
  width: auto;
  display: block;
  overflow: visible;
}
.logo-mark {
  width: 38px; height: 38px;
  background: var(--navy);
  color: var(--white);
  font-family: 'Inter', sans-serif;
  font-weight: 700;
  font-size: 13px;
  letter-spacing: .06em;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
}
.logo-mark.small { width: 30px; height: 30px; font-size: 11px; border-radius: 6px; }
.logo-text {
  font-family: 'Inter', sans-serif;
  font-weight: 700;
  font-size: 18px;
  letter-spacing: .04em;
  color: var(--navy);
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}
.logo-text em {
  font-style: normal;
  font-size: 10px;
  letter-spacing: .14em;
  color: var(--gray-400);
  font-weight: 500;
}

/* Nav */
.nav { margin-left: auto; }
.nav-list {
  display: flex;
  align-items: center;
  gap: 36px;
}
.nav-has-drop { position: relative; }
.nav-link {
  font-size: 16px;
  font-weight: 600;
  color: var(--gray-600);
  letter-spacing: .06em;
  padding: 4px 0;
  position: relative;
  transition: color var(--transition);
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 0;
  width: 0; height: 2px;
  background: var(--accent);
  transition: width var(--transition);
}
.nav-link:hover { color: var(--navy); }
.nav-link:hover::after { width: 100%; }

.nav-drop {
  position: absolute;
  top: 100%; left: 50%;
  transform: translateX(-50%) translateY(-6px);
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: 8px 0;
  min-width: 220px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s ease;
}
/* JS로 제어 — hover 클래스 방식 */
.nav-has-drop.drop-open .nav-drop {
  opacity: 1;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}
/* 상위 메뉴와 하위 메뉴 사이 gap 브리지 (투명 영역) */
.nav-drop::before {
  content: '';
  position: absolute;
  top: -12px; left: 0;
  width: 100%; height: 12px;
}
.nav-drop li a {
  display: block;
  padding: 10px 20px;
  font-size: 13.5px;
  color: var(--gray-600);
  font-weight: 500;
  transition: background var(--transition), color var(--transition);
}
.nav-drop li a:hover { background: var(--off-white); color: var(--navy); }

/* CTA */
.header-cta {
  margin-left: 24px;
  padding: 10px 24px;
  background: var(--navy);
  color: var(--white);
  font-size: 13.5px;
  font-weight: 600;
  letter-spacing: .04em;
  border-radius: 40px;
  white-space: nowrap;
  transition: background var(--transition), transform var(--transition);
}
.header-cta:hover { background: var(--accent); transform: translateY(-1px); }

.hamburger { display: none; }


/* ─────────────────────────────────────────
   HERO
───────────────────────────────────────── */
.hero {
  position: relative;
  min-height: 100vh;
  background: var(--navy);
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-bg { position: absolute; inset: 0; z-index: 0; }

/* 배경 이미지 위 딥 네이비 오버레이 — 슬로건 텍스트 선명하게 */
.hero-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(
    120deg,
    rgba(6, 14, 34, 0.78) 0%,
    rgba(11, 28, 61, 0.65) 55%,
    rgba(11, 28, 61, 0.45) 100%
  );
  z-index: 1;
}

/* Subtle grid */
.hero-grid {
  position: absolute; inset: 0;
  z-index: 2;
  background-image:
    linear-gradient(rgba(255,255,255,.018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.018) 1px, transparent 1px);
  background-size: 80px 80px;
}

/* Accent glow blobs */
.hero-accent-1 {
  position: absolute;
  top: -200px; right: -100px;
  width: 700px; height: 700px;
  z-index: 2;
  background: radial-gradient(circle, rgba(30,58,110,.45) 0%, transparent 70%);
}
.hero-accent-2 {
  position: absolute;
  bottom: -150px; left: 60px;
  width: 500px; height: 500px;
  z-index: 2;
  background: radial-gradient(circle, rgba(27,79,191,.18) 0%, transparent 70%);
}

.hero-inner {
  position: relative; z-index: 1;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: calc(var(--header-h) + 60px) 40px 100px;
  width: 100%;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hero-title {
  font-family: 'Noto Sans KR', sans-serif;
  font-weight: 800;
  color: var(--white);
  margin-bottom: 32px;
  text-align: center;
  text-shadow: 0 4px 32px rgba(0,0,0,0.35);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
}
/* 첫 줄: 슬로건 — 세련된 중간 크기 */
.hero-title-slogan {
  display: block;
  font-size: clamp(16px, 1.8vw, 24px);
  font-weight: 500;
  letter-spacing: .18em;
  color: rgba(255,255,255,.65);
  line-height: 1.5;
  text-transform: none;
}
/* 두 번째 줄: 사명 — 크고 강하게 */
.hero-title em {
  font-style: normal;
  color: var(--white);
  display: block;
  font-size: clamp(48px, 7.5vw, 110px);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -.04em;
  text-shadow: 0 8px 48px rgba(0,0,0,0.45);
}

.hero-desc {
  font-size: clamp(14px, 1.3vw, 16px);
  line-height: 2.4;
  color: rgba(255,255,255,.6);
  max-width: 480px;
  margin-bottom: 64px;
  text-align: center;
  text-shadow: 0 1px 8px rgba(0,0,0,0.3);
}

/* Stats */
.hero-stats {
  display: flex;
  align-items: center;
  gap: 40px;
}
.stat strong {
  display: block;
  font-family: 'Inter', sans-serif;
  font-size: 36px;
  font-weight: 800;
  color: var(--white);
  line-height: 1;
  margin-bottom: 6px;
}
.stat span {
  font-size: 12px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: rgba(255,255,255,.4);
  font-weight: 500;
}
.stat-divider {
  width: 1px; height: 44px;
  background: rgba(255,255,255,.12);
}

/* Scroll indicator */
.hero-scroll {
  position: absolute;
  bottom: 40px; left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  z-index: 1;
}
.hero-scroll span {
  font-size: 10px;
  letter-spacing: .2em;
  color: rgba(255,255,255,.3);
  font-weight: 600;
}
.scroll-line {
  width: 1px; height: 48px;
  background: linear-gradient(to bottom, rgba(255,255,255,.3), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}
@keyframes scrollPulse {
  0%, 100% { opacity: .4; transform: scaleY(1); transform-origin: top; }
  50% { opacity: 1; }
}


/* ─────────────────────────────────────────
   SHARED SECTION HELPERS
───────────────────────────────────────── */
.section-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 100px 40px;
}
.section-header {
  text-align: center;
  margin-bottom: 64px;
}
.section-label {
  font-family: 'Inter', sans-serif;
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 14px;
}
.section-label.light { color: rgba(255,255,255,.55); }
.section-title {
  font-family: 'Noto Sans KR', sans-serif;
  font-size: clamp(28px, 3.2vw, 44px);
  font-weight: 700;
  line-height: 1.25;
  color: var(--navy);
  letter-spacing: -.02em;
  margin-bottom: 16px;
}
.section-sub {
  font-size: 16px;
  line-height: 1.7;
  color: var(--gray-600);
  max-width: 540px;
  margin: 0 auto;
}


/* ─────────────────────────────────────────
   BUSINESS CARDS
───────────────────────────────────────── */
.business {
  background: linear-gradient(160deg, #0B1C3D 0%, #142952 60%, #1B4FBF 100%);
  position: relative;
  overflow: hidden;
}
/* 미세 그리드 패턴 */
.business::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
  z-index: 0;
}
.business::before {
  content: '';
  position: absolute;
  top: -200px; right: -200px;
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(46,102,216,.25) 0%, transparent 70%);
  pointer-events: none;
  z-index: 1;
}
.business .section-inner { position: relative; z-index: 2; }
.business .section-title { color: var(--white); }
.business .section-label { color: rgba(255,255,255,.55); }
.business .section-sub { color: rgba(255,255,255,.5); }

.biz-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.biz-card {
  position: relative;
  background: rgba(255,255,255,.06);
  backdrop-filter: blur(12px);
  border-radius: var(--radius-lg);
  padding: 44px 44px 40px;
  display: flex;
  flex-direction: column;
  gap: 0;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,.12);
  box-shadow: 0 4px 24px rgba(0,0,0,.2);
  transition: transform .35s cubic-bezier(.2,.8,.4,1),
              box-shadow .35s cubic-bezier(.2,.8,.4,1),
              background .35s ease,
              border-color .35s ease;
  cursor: pointer;
}
.biz-card:hover {
  transform: translateY(-6px);
  background: rgba(255,255,255,.11);
  box-shadow: 0 16px 48px rgba(0,0,0,.35);
  border-color: rgba(255,255,255,.22);
}

/* Number badge */
.biz-card-num {
  font-family: 'Inter', sans-serif;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .18em;
  color: var(--gray-400);
  margin-bottom: 28px;
}

/* Icon */
.biz-card-icon {
  width: 56px; height: 56px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 28px;
  flex-shrink: 0;
  transition: background var(--transition);
}
.biz-card-icon svg { width: 32px; height: 32px; }

.biz-card--energy .biz-card-icon  { background: #EEF3FF; color: #1B4FBF; }
.biz-card--plant  .biz-card-icon  { background: #EDF6EF; color: #1A7340; }
.biz-card--env    .biz-card-icon  { background: #E8F5FB; color: #0D6F9E; }
.biz-card--digital .biz-card-icon { background: #F3EEFF; color: #6B35C6; }

.biz-card--energy:hover .biz-card-icon  { background: #1B4FBF; color: #fff; }
.biz-card--plant:hover  .biz-card-icon  { background: #1A7340; color: #fff; }
.biz-card--env:hover    .biz-card-icon  { background: #0D6F9E; color: #fff; }
.biz-card--digital:hover .biz-card-icon { background: #6B35C6; color: #fff; }

/* Card content */
.biz-card-title {
  font-family: 'Noto Sans KR', sans-serif;
  font-size: 22px;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 4px;
  letter-spacing: -.01em;
}
.biz-card-sub {
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--gray-400);
  font-weight: 500;
  text-transform: uppercase;
  margin-bottom: 18px;
}
.biz-card-desc {
  font-size: 15px;
  line-height: 1.75;
  color: rgba(255,255,255,.55);
  margin-bottom: 24px;
  flex: 1;
}

/* Tags */
.biz-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 32px;
}
.biz-card-tags li {
  padding: 5px 12px;
  background: rgba(255,255,255,.1);
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  color: rgba(255,255,255,.7);
  letter-spacing: .04em;
  transition: background var(--transition), color var(--transition);
}
.biz-card:hover .biz-card-tags li { background: rgba(255,255,255,.18); }

/* Arrow */
.biz-card-arrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  color: rgba(255,255,255,.6);
  letter-spacing: .04em;
  transition: gap var(--transition), color var(--transition);
  align-self: flex-start;
}
.biz-card:hover .biz-card-arrow { color: var(--white); }
.biz-card-arrow svg { width: 20px; height: 20px; }
.biz-card:hover .biz-card-arrow { gap: 14px; }

/* Color-accent hover bar at bottom */
.biz-card-hover-bar {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 3px;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .4s cubic-bezier(.4,0,.2,1);
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}
.biz-card:hover .biz-card-hover-bar { transform: scaleX(1); }
.biz-card--energy  .biz-card-hover-bar { background: #1B4FBF; }
.biz-card--plant   .biz-card-hover-bar { background: #1A7340; }
.biz-card--env     .biz-card-hover-bar { background: #0D6F9E; }
.biz-card--digital .biz-card-hover-bar { background: #6B35C6; }


/* ─────────────────────────────────────────
   ABOUT STRIP
───────────────────────────────────────── */
.about-strip {
  background: var(--white);
  border-top: 4px solid var(--accent);
}

.about-strip-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.about-text .section-title { text-align: left; margin-bottom: 20px; }
.about-body {
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--gray-600);
  margin-bottom: 40px;
}

.about-values { display: flex; flex-direction: column; gap: 20px; }
.value-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}
.value-icon {
  width: 44px; height: 44px;
  border-radius: 12px;
  background: linear-gradient(135deg, #EEF3FF, #dce7ff);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--accent);
}
.value-icon svg { width: 20px; height: 20px; }
.value-item strong {
  display: block;
  font-size: 15px;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 2px;
}
.value-item p { font-size: 13.5px; color: var(--gray-600); }

/* About visual — 가로 3단 stat grid */
.about-visual {
  display: flex;
  align-items: center;
  justify-content: flex-start;
}
.stat-grid {
  display: flex;
  align-items: center;
  width: 100%;
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: 4px;
  box-shadow: 0 4px 32px rgba(27,79,191,.1);
}
.stat-cell {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 40px 24px;
  gap: 10px;
  text-align: center;
}
.stat-num {
  font-family: 'Inter', sans-serif;
  font-size: 52px;
  font-weight: 800;
  color: var(--navy);
  line-height: 1;
  letter-spacing: -0.02em;
}
.stat-num--text {
  font-family: 'Noto Sans KR', sans-serif;
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--navy);
  line-height: 1.5;
  letter-spacing: 0;
  display: block;
  text-align: center;
}
.stat-num sup {
  font-size: 22px;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0;
}
.stat-label {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--gray-400);
}
.stat-divline {
  width: 1px;
  height: 64px;
  background: var(--gray-200);
  flex-shrink: 0;
}


/* ─────────────────────────────────────────
   PROJECT BADGE (사업유형 뱃지)
───────────────────────────────────────── */
.project-badge {
  flex-shrink: 0;
  width: 52px; height: 52px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Inter', sans-serif;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: .06em;
  text-transform: uppercase;
}
/* SCS — 블루 */
.badge--scs {
  background: rgba(27,79,191,.18);
  border: 1px solid rgba(27,79,191,.45);
  color: #7EB3FF;
  box-shadow: 0 0 16px rgba(27,79,191,.2);
}
/* AI CCTV — 그린 */
.badge--cctv {
  background: rgba(26,115,64,.18);
  border: 1px solid rgba(26,115,64,.45);
  color: #5DD98A;
  box-shadow: 0 0 16px rgba(26,115,64,.2);
}
/* 스마트빌딩 — 틸 */
.badge--smart {
  background: rgba(13,111,158,.18);
  border: 1px solid rgba(13,111,158,.45);
  color: #4ECBF5;
  box-shadow: 0 0 16px rgba(13,111,158,.2);
}
/* 신축시공 — 퍼플 */
.badge--digital {
  background: rgba(107,53,198,.18);
  border: 1px solid rgba(107,53,198,.45);
  color: #B47EFF;
  box-shadow: 0 0 16px rgba(107,53,198,.2);
}

/* project-tag 컬러 분기 */
.tag--scs   { background: rgba(27,79,191,.15);  border-color: rgba(27,79,191,.4);  color: #7EB3FF; }
.tag--cctv  { background: rgba(26,115,64,.15);  border-color: rgba(26,115,64,.4);  color: #5DD98A; }
.tag--smart { background: rgba(13,111,158,.15); border-color: rgba(13,111,158,.4); color: #4ECBF5; }
.tag--digital { background: rgba(107,53,198,.15); border-color: rgba(107,53,198,.4); color: #B47EFF; }

/* hover 시 뱃지 글로우 강화 */
.project-item:hover .badge--scs     { box-shadow: 0 0 24px rgba(27,79,191,.45); }
.project-item:hover .badge--cctv    { box-shadow: 0 0 24px rgba(26,115,64,.45); }
.project-item:hover .badge--smart   { box-shadow: 0 0 24px rgba(13,111,158,.45); }
.project-item:hover .badge--digital { box-shadow: 0 0 24px rgba(107,53,198,.45); }

/* ─────────────────────────────────────────
   PROJECTS STRIP
───────────────────────────────────────── */
.projects-strip {
  background: #060E22;
  position: relative;
  overflow: hidden;
}
/* 일렉트릭 블루 글로우 배경 */
.projects-strip::before {
  content: '';
  position: absolute;
  top: -100px; left: 50%;
  transform: translateX(-50%);
  width: 800px; height: 400px;
  background: radial-gradient(ellipse, rgba(0,120,255,.12) 0%, transparent 70%);
  pointer-events: none;
}
/* 미세 도트 패턴 */
.projects-strip::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, rgba(0,120,255,.18) 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events: none;
  opacity: 0.5;
}
.projects-strip .section-inner { position: relative; z-index: 2; }
.projects-strip .section-title { color: var(--white); }
.projects-strip .section-label { color: rgba(0,180,255,.8); letter-spacing: .25em; }
.projects-strip .section-header { margin-bottom: 40px; }

.project-list { display: flex; flex-direction: column; gap: 0; }

.project-item {
  display: flex;
  align-items: center;
  gap: 32px;
  padding: 28px 0;
  border-bottom: 1px solid rgba(0,120,255,.15);
  transition: background var(--transition), padding var(--transition);
  cursor: default;
  position: relative;
}
.project-item::before {
  content: '';
  position: absolute;
  left: -40px; top: 0; bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, #0078FF, #00D4FF);
  opacity: 0;
  transition: opacity var(--transition);
  border-radius: 2px;
}
.project-item:first-child { border-top: 1px solid rgba(0,120,255,.15); }
.project-item:hover { background: rgba(0,120,255,.07); padding-left: 20px; padding-right: 20px; margin: 0 -20px; border-radius: var(--radius-sm); }
.project-item:hover::before { opacity: 1; left: -20px; }

/* .project-year → .project-badge 로 대체됨 */
.project-info { flex: 1; }
.project-info strong {
  display: block;
  font-size: 15.5px;
  font-weight: 600;
  color: rgba(255,255,255,.92);
  margin-bottom: 4px;
  letter-spacing: -.01em;
}
.project-info p { font-size: 13px; color: rgba(255,255,255,.35); }
.project-tag {
  padding: 5px 14px;
  border-radius: 20px;
  background: rgba(0,120,255,.15);
  border: 1px solid rgba(0,180,255,.35);
  font-size: 12px;
  font-weight: 600;
  color: #60CFFF;
  white-space: nowrap;
  text-shadow: 0 0 8px rgba(0,180,255,.4);
  transition: background var(--transition), border-color var(--transition);
}
.project-item:hover .project-tag {
  background: rgba(0,120,255,.28);
  border-color: rgba(0,180,255,.6);
}


/* ─────────────────────────────────────────
   CONTACT BANNER
───────────────────────────────────────── */
.contact-banner {
  background: linear-gradient(135deg, #0B1C3D 0%, #1B4FBF 50%, #0D6F9E 100%);
  overflow: hidden;
  position: relative;
}
.contact-banner::before {
  content: '';
  position: absolute;
  bottom: -150px; right: -150px;
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(201,168,76,.15) 0%, transparent 65%);
  pointer-events: none;
}
.contact-banner::after {
  content: '';
  position: absolute;
  top: -100px; left: -100px;
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(255,255,255,.05) 0%, transparent 65%);
  pointer-events: none;
}
.contact-inner {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 80px;
  align-items: start;
}
.contact-title {
  font-family: 'Noto Sans KR', sans-serif;
  font-size: clamp(26px, 2.8vw, 38px);
  font-weight: 700;
  color: var(--white);
  line-height: 1.3;
  margin-bottom: 14px;
  letter-spacing: -.02em;
}
.contact-sub {
  font-size: 15px;
  color: rgba(255,255,255,.5);
  line-height: 1.7;
}

/* ── Contact 기업 정보 바 ── */
.contact-info-bar {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 32px;
  padding-top: 28px;
  border-top: 1px solid rgba(255,255,255,.1);
}
.contact-info-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 13.5px;
  color: rgba(255,255,255,.55);
}
.contact-info-item svg { flex-shrink: 0; margin-top: 2px; opacity: .7; }
.contact-info-item a { color: rgba(255,255,255,.65); text-decoration: none; transition: color var(--transition); }
.contact-info-item a:hover { color: var(--white); }

/* ── Contact 실제 폼 ── */
.contact-form {
  background: rgba(255,255,255,.05);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: var(--radius-lg);
  padding: 36px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.form-row { display: flex; gap: 16px; }
.form-field { display: flex; flex-direction: column; gap: 8px; flex: 1; }
.form-field.full { width: 100%; flex: unset; }
.form-field label {
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: .07em;
  text-transform: uppercase;
  color: rgba(255,255,255,.45);
}
.form-field label .req { color: var(--gold); margin-left: 2px; }
.form-input {
  height: 46px;
  background: rgba(255,255,255,.07);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: var(--radius-sm);
  padding: 0 14px;
  font-family: 'Noto Sans KR', sans-serif;
  font-size: 14px;
  color: var(--white);
  outline: none;
  transition: border-color var(--transition), background var(--transition), box-shadow var(--transition);
}
.form-input::placeholder { color: rgba(255,255,255,.25); }
.form-input:focus {
  border-color: rgba(100,160,255,.6);
  background: rgba(255,255,255,.1);
  box-shadow: 0 0 0 3px rgba(27,79,191,.2);
}
.form-input.form-textarea {
  height: auto;
  padding: 12px 14px;
  resize: vertical;
  min-height: 110px;
  line-height: 1.6;
}
/* 입력 검증 */
.form-input:invalid:not(:placeholder-shown) {
  border-color: rgba(255,80,80,.5);
}

/* 전송 버튼 */
.form-submit {
  align-self: flex-start;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 13px 32px;
  background: var(--gold);
  color: var(--navy);
  font-family: 'Noto Sans KR', sans-serif;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .05em;
  border: none;
  border-radius: 40px;
  cursor: pointer;
  transition: opacity var(--transition), transform var(--transition), box-shadow var(--transition);
}
.form-submit:hover {
  opacity: .88;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(201,168,76,.35);
}
.form-submit:disabled {
  opacity: .5;
  cursor: not-allowed;
  transform: none;
}
.submit-icon { transition: transform var(--transition); }
.form-submit:hover .submit-icon { transform: translateX(3px); }

/* 결과 메시지 */
.form-success {
  font-size: 13.5px;
  color: #5DD98A;
  background: rgba(26,115,64,.18);
  border: 1px solid rgba(26,115,64,.35);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  margin-top: 4px;
}
.form-error {
  font-size: 13.5px;
  color: #FF8A8A;
  background: rgba(191,27,27,.15);
  border: 1px solid rgba(191,27,27,.3);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  margin-top: 4px;
}
.form-error a { color: var(--gold); }


/* ─────────────────────────────────────────
   FOOTER
───────────────────────────────────────── */
.footer { background: var(--gray-800); }

.footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 64px 40px 40px;
  display: grid;
  grid-template-columns: 1.2fr 2fr;
  gap: 80px;
}

.footer-brand .footer-logo {
  display: block;
  margin-bottom: 16px;
}
.footer-logo-img {
  height: 36px;
  width: auto;
  display: block;
  object-fit: contain;
}
.footer-brand p {
  font-size: 13.5px;
  color: rgba(255,255,255,.35);
  line-height: 1.6;
}
.footer-brand .logo-text { color: var(--white); }
.footer-brand .logo-text em { color: rgba(255,255,255,.3); }

.footer-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
.footer-col {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-col strong {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: rgba(255,255,255,.5);
  margin-bottom: 6px;
}
.footer-col a {
  font-size: 14px;
  color: rgba(255,255,255,.35);
  transition: color var(--transition);
}
.footer-col a.footer-address {
  font-size: 11px;
  white-space: normal;
  word-break: keep-all;
  overflow-wrap: break-word;
}
.footer-col a:hover { color: rgba(255,255,255,.75); }

.footer-bottom {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 20px 40px 24px;
  border-top: 1px solid rgba(255,255,255,.07);
}
.footer-bottom p {
  font-size: 12.5px;
  color: rgba(255,255,255,.2);
}


/* ─────────────────────────────────────────
   RESPONSIVE
───────────────────────────────────────── */

/* ── 1024px : 태블릿 ── */
@media (max-width: 1024px) {
  .biz-grid { grid-template-columns: 1fr 1fr; }
  .about-strip-inner { grid-template-columns: 1fr; gap: 48px; }
  .contact-inner { grid-template-columns: 1fr; gap: 40px; }
  .footer-inner { grid-template-columns: 1fr; gap: 40px; }
  .stat-num { font-size: 42px; }
  .project-item { gap: 20px; }
  .project-tag { display: none; }            /* 태블릿에서 태그 숨김 */
}

/* ── 768px : 모바일 ── */
@media (max-width: 768px) {
  :root { --header-h: 60px; }

  /* 헤더 */
  .header-inner { padding: 0 20px; gap: 16px; }
  .nav, .header-cta { display: none; }
  .logo img, .logo-img { height: 28px; max-width: 160px; }
  .hamburger {
    display: flex;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    margin-left: auto;
    padding: 4px;
  }
  .hamburger span {
    width: 24px; height: 2px;
    background: var(--navy);
    border-radius: 2px;
    display: block;
    transition: var(--transition);
  }
  /* 모바일 열린 nav */
  .nav.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: var(--header-h);
    left: 0; right: 0;
    background: var(--white);
    box-shadow: 0 8px 32px rgba(0,0,0,.12);
    padding: 20px 24px 32px;
    z-index: 999;
    border-top: 1px solid var(--gray-200);
  }
  .nav.open .nav-list {
    flex-direction: column;
    gap: 0;
  }
  .nav.open .nav-link {
    display: block;
    padding: 14px 0;
    font-size: 16px;
    color: var(--navy);
    border-bottom: 1px solid var(--gray-100);
  }
  .nav.open .nav-drop {
    position: static;
    opacity: 1;
    pointer-events: auto;
    transform: none;
    box-shadow: none;
    border: none;
    padding: 0 0 0 16px;
    min-width: unset;
    background: transparent;
  }
  .nav.open .nav-drop li a {
    padding: 10px 0;
    font-size: 14px;
    color: var(--gray-600);
    border-bottom: 1px solid var(--gray-100);
  }
  .nav.open .nav-drop li a:hover {
    background: none;
    color: var(--accent);
  }
  /* 모바일에서 드롭다운 항상 보임 */
  .nav.open .nav-has-drop .nav-drop { display: block; }

  /* 히어로 */
  .hero-inner { padding: calc(var(--header-h) + 40px) 20px 72px; }
  .hero-title em { font-size: clamp(28px, 8vw, 48px); }
  .hero-title-slogan { font-size: 13px; }
  .hero-desc { font-size: 14px; }
  .hero-stats { flex-direction: column; align-items: flex-start; gap: 20px; }
  .stat-divider { width: 40px; height: 1px; }
  .hero-scroll { display: none; }

  /* 공통 섹션 */
  .section-inner { padding: 64px 20px; }
  .section-title { font-size: clamp(22px, 6vw, 32px); }

  /* Business */
  .biz-grid { grid-template-columns: 1fr; gap: 16px; }
  .biz-card { padding: 28px 24px; }
  .biz-card-title { font-size: 18px; }
  .biz-card-num { margin-bottom: 20px; }
  .biz-card-icon { margin-bottom: 20px; }

  /* About */
  .about-strip { border-top-width: 3px; }
  .about-body { font-size: 14.5px; }
  .stat-grid { flex-direction: column; border-radius: 8px; }
  .stat-cell { padding: 28px 20px; width: 100%; }
  .stat-num { font-size: 40px; }
  .stat-divline { width: 80%; height: 1px; }  /* 수평 분리선으로 전환 */

  /* Projects */
  .project-item {
    flex-wrap: wrap;
    gap: 12px;
    padding: 20px 0;
  }
  .project-badge {
    width: 44px; height: 44px;
    font-size: 9px;
    border-radius: 10px;
  }
  .project-info strong { font-size: 14px; }
  .project-info p { font-size: 12px; }
  .project-tag { display: none; }

  /* Contact */
  .contact-title { font-size: clamp(20px, 5.5vw, 28px); }
  .contact-sub { font-size: 13.5px; }
  .contact-form { padding: 24px 18px; }
  .form-row { flex-direction: column; gap: 0; }
  .contact-info-bar { margin-top: 24px; padding-top: 20px; gap: 10px; }
  .contact-info-item { font-size: 12.5px; }
  .form-submit { width: 100%; justify-content: center; }

  /* Footer */
  .footer-inner { padding: 48px 20px 32px; }
  .footer-links { grid-template-columns: 1fr 1fr; gap: 24px; }
  .footer-col a.footer-address { white-space: normal; font-size: 11px; }
  .footer-bottom { padding: 16px 20px 20px; }
}

/* ── 640px : 소형 모바일 ── */
@media (max-width: 640px) {
  /* 헤더 */
  .header-inner { padding: 0 16px; }

  /* 히어로 */
  .hero-inner { padding: calc(var(--header-h) + 32px) 16px 60px; }
  .hero-title em { font-size: clamp(26px, 9vw, 38px); }
  .hero-stats { gap: 16px; }

  /* 공통 */
  .section-inner { padding: 52px 16px; }

  /* Business */
  .biz-card { padding: 24px 20px; }

  /* About */
  .stat-grid { gap: 0; }
  .stat-cell { padding: 24px 16px; }
  .stat-num { font-size: 36px; }

  /* Projects */
  .projects-strip::before { width: 100%; }
  .project-badge { width: 40px; height: 40px; font-size: 8px; border-radius: 8px; }
  .project-info { flex: 1; min-width: 0; }
  .project-info strong { font-size: 13.5px; }

  /* Contact */
  .contact-form { padding: 20px 16px; border-radius: 12px; }
  .contact-info-bar { flex-direction: column; gap: 12px; align-items: flex-start; }

  /* Footer */
  .footer-inner { padding: 40px 16px 28px; }
  .footer-links { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { padding: 14px 16px 18px; }
  .footer-bottom p { font-size: 11.5px; }
}