/* ==========================================================================
   MPPL - 엠피파이프레이저센터 주식회사
   Main Stylesheet | Dark Blue + Green Premium B2B Industrial
   ========================================================================== */

/* --------------------------------------------------------------------------
   CSS VARIABLES (Design Tokens)
   -------------------------------------------------------------------------- */
:root {
  /* Brand Colors */
  --clr-primary:    #003366;   /* 다크 네이비 */
  --clr-primary-d:  #001f3f;   /* 더 진한 네이비 */
  --clr-primary-l:  #0055aa;   /* 밝은 파란색 */
  --clr-accent:     #66CC00;   /* 네온 그린 */
  --clr-accent-d:   #4da600;   /* 진한 그린 */
  --clr-accent-glow:rgba(102,204,0,0.35);

  /* Dark Background Layers */
  --clr-dark-1:     #0a0e1a;
  --clr-dark-2:     #0d1529;
  --clr-dark-3:     #111a33;

  /* Neutral */
  --clr-gray-900:   #111111;
  --clr-gray-800:   #333333;
  --clr-gray-600:   #555555;
  --clr-gray-400:   #999999;
  --clr-gray-200:   #dddddd;
  --clr-gray-100:   #F5F5F5;
  --clr-white:      #ffffff;

  /* Typography */
  --font-main: 'Noto Sans KR', 'Inter', sans-serif;
  --fw-light:  300;
  --fw-regular:400;
  --fw-medium: 500;
  --fw-semi:   600;
  --fw-bold:   700;
  --fw-black:  900;

  /* Spacing */
  --sp-xs:  4px;
  --sp-sm:  8px;
  --sp-md:  16px;
  --sp-lg:  24px;
  --sp-xl:  40px;
  --sp-2xl: 64px;
  --sp-3xl: 96px;

  /* Border Radius */
  --r-sm:   4px;
  --r-md:   8px;
  --r-lg:   16px;
  --r-xl:   24px;
  --r-pill: 100px;

  /* Shadows */
  --shadow-sm:   0 2px 8px rgba(0,0,0,0.08);
  --shadow-md:   0 4px 20px rgba(0,0,0,0.12);
  --shadow-lg:   0 8px 40px rgba(0,0,0,0.18);
  --shadow-glow: 0 0 30px var(--clr-accent-glow);

  /* Transitions */
  --tr-fast:   0.15s ease;
  --tr-normal: 0.25s ease;
  --tr-slow:   0.4s ease;

  /* Layout */
  --max-w: 1280px;
  --nav-h: 72px;
}

/* --------------------------------------------------------------------------
   RESET & BASE
   -------------------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-main);
  font-weight: var(--fw-regular);
  color: var(--clr-gray-800);
  background: var(--clr-white);
  line-height: 1.6;
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; transition: color var(--tr-fast); }
ul, ol { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

/* Screen-reader only */
.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap; border: 0;
}

/* --------------------------------------------------------------------------
   LAYOUT UTILITIES
   -------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--sp-xl);
}

/* --------------------------------------------------------------------------
   BUTTONS
   -------------------------------------------------------------------------- */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-sm);
  padding: 14px 32px;
  background: var(--clr-accent);
  color: var(--clr-gray-900);
  font-weight: var(--fw-bold);
  font-size: 1rem;
  border-radius: var(--r-pill);
  transition: background var(--tr-normal), transform var(--tr-fast), box-shadow var(--tr-normal);
  white-space: nowrap;
}
.btn-primary:hover, .btn-primary:focus-visible {
  background: var(--clr-accent-d);
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
  outline: none;
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-sm);
  padding: 14px 32px;
  background: transparent;
  color: var(--clr-white);
  font-weight: var(--fw-bold);
  font-size: 1rem;
  border-radius: var(--r-pill);
  border: 2px solid rgba(255,255,255,0.6);
  transition: all var(--tr-normal);
  white-space: nowrap;
}
.btn-secondary:hover, .btn-secondary:focus-visible {
  background: rgba(255,255,255,0.1);
  border-color: var(--clr-white);
  transform: translateY(-2px);
  outline: none;
}

.btn-white {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-sm);
  padding: 14px 32px;
  background: var(--clr-white);
  color: var(--clr-primary);
  font-weight: var(--fw-bold);
  font-size: 1rem;
  border-radius: var(--r-pill);
  transition: all var(--tr-normal);
  white-space: nowrap;
}
.btn-white:hover, .btn-white:focus-visible {
  background: var(--clr-gray-100);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  outline: none;
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-sm);
  padding: 14px 32px;
  background: transparent;
  color: var(--clr-primary);
  font-weight: var(--fw-bold);
  font-size: 1rem;
  border-radius: var(--r-pill);
  border: 2px solid var(--clr-primary);
  transition: all var(--tr-normal);
  white-space: nowrap;
}
.btn-outline:hover, .btn-outline:focus-visible {
  background: var(--clr-primary);
  color: var(--clr-white);
  transform: translateY(-2px);
  outline: none;
}

.btn-lg { padding: 16px 40px; font-size: 1.0625rem; }
.btn-sm { padding: 10px 20px; font-size: 0.875rem; }

/* --------------------------------------------------------------------------
   SECTION COMMON STYLES
   -------------------------------------------------------------------------- */
.section-header { text-align: center; margin-bottom: var(--sp-2xl); }
.section-header-left { text-align: left; }
.section-tag {
  display: inline-block;
  padding: 5px 16px;
  background: rgba(102,204,0,0.12);
  color: var(--clr-accent-d);
  font-size: 0.8125rem;
  font-weight: var(--fw-semi);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-radius: var(--r-pill);
  margin-bottom: var(--sp-md);
}
.section-title {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: var(--fw-black);
  color: var(--clr-gray-900);
  line-height: 1.25;
  margin-bottom: var(--sp-md);
}
.section-desc {
  font-size: 1rem;
  color: var(--clr-gray-600);
  max-width: 600px;
  margin: 0 auto;
}
.section-header-left .section-desc { margin: 0; }

/* ==========================================================================
   HEADER / NAVIGATION
   ========================================================================== */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 900;
  transition: background var(--tr-normal), box-shadow var(--tr-normal);
}

.navbar {
  background: transparent;
  transition: background var(--tr-normal), backdrop-filter var(--tr-normal);
}

.site-header.scrolled .navbar {
  background: rgba(10,14,26,0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 2px 20px rgba(0,0,0,0.3);
}

.nav-container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--sp-xl);
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-lg);
}

/* Logo */
.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
  flex-shrink: 0;
}
.logo-icon {
  position: relative;
  display: flex;
  align-items: center;
}
.logo-mp {
  font-size: 1.75rem;
  font-weight: var(--fw-black);
  color: #4d9fff;
  letter-spacing: -0.03em;
  line-height: 1;
}
.logo-rings { position: absolute; top: 50%; left: 50%; transform: translate(-50%,-50%); pointer-events: none; }
.ring {
  position: absolute;
  border: 2px solid var(--clr-accent);
  border-radius: 50%;
  top: 50%; left: 50%;
  transform: translate(-50%,-50%);
  opacity: 0.7;
}
.ring-1 { width: 40px; height: 40px; }
.ring-2 { width: 54px; height: 20px; transform: translate(-50%,-50%) rotate(-20deg); }
.logo-text { display: flex; flex-direction: column; line-height: 1.1; }
.logo-name { font-size: 0.9375rem; font-weight: var(--fw-bold); color: var(--clr-white); letter-spacing: 0.02em; }
.logo-sub { font-size: 0.6875rem; color: rgba(255,255,255,0.6); letter-spacing: 0.01em; }

/* Nav Menu */
.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--sp-lg);
}
.nav-link {
  font-size: 0.9375rem;
  font-weight: var(--fw-medium);
  color: rgba(255,255,255,0.85);
  padding: 6px 2px;
  position: relative;
  transition: color var(--tr-fast);
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0;
  width: 0; height: 2px;
  background: var(--clr-accent);
  transition: width var(--tr-normal);
}
.nav-link:hover, .nav-link:focus-visible { color: var(--clr-white); }
.nav-link:hover::after, .nav-link:focus-visible::after { width: 100%; }
.nav-link.active { color: var(--clr-accent); }
.nav-link.active::after { width: 100%; }

/* CTA Nav Button */
.btn-cta-nav {
  padding: 10px 24px;
  background: var(--clr-accent);
  color: var(--clr-gray-900);
  font-weight: var(--fw-bold);
  font-size: 0.9375rem;
  border-radius: var(--r-pill);
  transition: all var(--tr-normal);
  white-space: nowrap;
  flex-shrink: 0;
}
.btn-cta-nav:hover, .btn-cta-nav:focus-visible {
  background: var(--clr-accent-d);
  transform: translateY(-1px);
  box-shadow: 0 4px 15px var(--clr-accent-glow);
  outline: none;
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 6px;
  border-radius: var(--r-sm);
}
.ham-line {
  display: block;
  width: 24px; height: 2px;
  background: var(--clr-white);
  border-radius: 2px;
  transition: all var(--tr-normal);
}
.hamburger.open .ham-line:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open .ham-line:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger.open .ham-line:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile Menu */
.mobile-menu-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 850;
}
.mobile-nav {
  position: fixed;
  top: 0; left: -100%;
  width: min(300px, 85vw);
  height: 100%;
  background: var(--clr-primary-d);
  z-index: 860;
  display: flex;
  flex-direction: column;
  padding: var(--sp-xl) var(--sp-lg);
  transition: left var(--tr-slow);
  overflow-y: auto;
}
.mobile-menu.open .mobile-menu-overlay { display: block; }
.mobile-menu.open .mobile-nav { left: 0; }

.mobile-logo {
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
  margin-bottom: var(--sp-2xl);
  padding-top: var(--sp-sm);
}
.logo-name-mobile { font-size: 0.9rem; color: rgba(255,255,255,0.8); font-weight: var(--fw-semi); }
.mobile-nav-list { display: flex; flex-direction: column; gap: var(--sp-xs); margin-bottom: auto; }
.mobile-nav-link {
  display: block;
  padding: 14px var(--sp-md);
  color: rgba(255,255,255,0.85);
  font-size: 1rem;
  font-weight: var(--fw-medium);
  border-radius: var(--r-md);
  transition: all var(--tr-fast);
}
.mobile-nav-link:hover { background: rgba(255,255,255,0.08); color: var(--clr-white); padding-left: 24px; }
.btn-mobile-cta {
  display: block;
  text-align: center;
  padding: 14px;
  background: var(--clr-accent);
  color: var(--clr-gray-900);
  font-weight: var(--fw-bold);
  font-size: 1rem;
  border-radius: var(--r-pill);
  margin-top: var(--sp-xl);
}
.btn-mobile-cta:hover { background: var(--clr-accent-d); }

/* ==========================================================================
   HERO SECTION
   ========================================================================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding: var(--nav-h) 0 0;
}

/* Dark layered background */
.hero-bg { position: absolute; inset: 0; z-index: 0; }
.hero-bg-gradient {
  position: absolute; inset: 0;
  background: linear-gradient(135deg, var(--clr-dark-1) 0%, var(--clr-dark-2) 50%, var(--clr-dark-3) 100%);
}
.hero-bg-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(102,204,0,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(102,204,0,0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  opacity: 0.6;
}
.hero-bg-glow { position: absolute; border-radius: 50%; filter: blur(80px); opacity: 0.25; }
.glow-1 { width: 600px; height: 600px; background: radial-gradient(circle, var(--clr-primary-l), transparent 70%); top: -100px; right: 10%; }
.glow-2 { width: 400px; height: 400px; background: radial-gradient(circle, var(--clr-accent), transparent 70%); bottom: 10%; right: 30%; opacity: 0.15; }

/* Hero Inner — 좌우 2분할 그리드 */
.hero-inner {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 60px var(--sp-xl) 80px;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
  gap: var(--sp-2xl);
}

/* Hero Content (Left) */
.hero-content {
  position: relative;
  z-index: 2;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-sm);
  padding: 8px 20px;
  background: rgba(102,204,0,0.1);
  border: 1px solid rgba(102,204,0,0.3);
  border-radius: var(--r-pill);
  color: var(--clr-accent);
  font-size: 0.875rem;
  font-weight: var(--fw-medium);
  margin-bottom: var(--sp-lg);
  animation: fade-up 0.6s ease both;
}
.badge-dot {
  width: 8px; height: 8px;
  background: var(--clr-accent);
  border-radius: 50%;
  animation: dot-pulse 2s ease-in-out infinite;
}
@keyframes dot-pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.5; transform: scale(0.7); }
}

/* 대형 슬로건 — 첨부 이미지 스타일 */
.hero-title {
  font-size: clamp(2.4rem, 4.8vw, 4rem);
  font-weight: var(--fw-black);
  color: var(--clr-white);
  line-height: 1.55;
  letter-spacing: -0.01em;
  margin-bottom: var(--sp-xl);
  animation: fade-up 0.7s ease 0.1s both;
}
.hero-title-line1 {
  display: block;
  font-size: clamp(1.1rem, 2.0vw, 2.0rem);
  color: rgba(255,255,255,0.92);
  white-space: nowrap;
}
.hero-title-line2 {
  display: block;
  font-size: clamp(2rem, 3.6vw, 3rem);
  margin-top: 0.2em;
}
.hero-accent { color: var(--clr-accent); }

.hero-subtitle {
  font-size: clamp(0.9rem, 1.4vw, 1.05rem);
  color: rgba(255,255,255,0.65);
  margin-bottom: var(--sp-xl);
  line-height: 1.9;
  animation: fade-up 0.7s ease 0.2s both;
}

/* Hero CTA */
.hero-cta-group {
  display: flex;
  gap: var(--sp-md);
  flex-wrap: wrap;
  margin-bottom: var(--sp-lg);
  animation: fade-up 0.7s ease 0.3s both;
}
.hero-btn { font-size: 1rem; }

.hero-quick-contact {
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
  color: rgba(255,255,255,0.6);
  font-size: 0.875rem;
  animation: fade-up 0.7s ease 0.4s both;
}
.hero-quick-contact .fa-phone { color: var(--clr-accent); }
.hero-phone-link { color: var(--clr-white); font-weight: var(--fw-semi); }
.hero-phone-link:hover { color: var(--clr-accent); }

/* Hero One-Stop Infographic (Right) */
.hero-onestop {
  display: flex;
  align-items: center;
  justify-content: center;
  animation: fade-up 0.8s ease 0.3s both;
}
.onestop-img {
  width: 100%;
  max-width: 420px;
  height: auto;
  border-radius: 50%;
  filter: drop-shadow(0 0 32px rgba(30, 80, 200, 0.55)) drop-shadow(0 0 16px rgba(102,204,0,0.18));
  transition: transform var(--tr-normal);
}
.onestop-img:hover { transform: scale(1.04) rotate(3deg); }

/* Scroll indicator */
.scroll-indicator {
  position: absolute;
  bottom: 32px; left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: rgba(255,255,255,0.4);
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  animation: fade-up 0.7s ease 0.8s both;
  z-index: 2;
}
.scroll-mouse {
  width: 24px; height: 38px;
  border: 2px solid rgba(255,255,255,0.3);
  border-radius: 12px;
  display: flex;
  justify-content: center;
  padding-top: 6px;
}
.scroll-wheel {
  width: 4px; height: 8px;
  background: rgba(255,255,255,0.5);
  border-radius: 2px;
  animation: scroll-wheel 1.6s ease-in-out infinite;
}
@keyframes scroll-wheel {
  0%   { transform: translateY(0); opacity: 1; }
  100% { transform: translateY(12px); opacity: 0; }
}

/* Fade-up animation */
@keyframes fade-up {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

@media (max-width: 1024px) {
  .hero-inner { grid-template-columns: 1fr; text-align: center; padding: 40px var(--sp-lg) 80px; }
  .hero-onestop { order: -1; }
  .onestop-img { max-width: 320px; }
  .hero-title { text-align: center; }
}

@media (max-width: 768px) {
  .hero-inner { padding: 32px var(--sp-md) 72px; gap: var(--sp-xl); }
  .onestop-img { max-width: 260px; }
  .hero-cta-group { flex-direction: column; align-items: center; }
  .hero-btn { width: 100%; justify-content: center; }
}

/* ==========================================================================
   CORE VALUES
   ========================================================================== */
.core-values {
  padding: var(--sp-3xl) 0;
  background: var(--clr-gray-100);
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-lg);
}

.value-card {
  background: var(--clr-white);
  border-radius: var(--r-xl);
  padding: var(--sp-xl) var(--sp-lg);
  border: 1px solid var(--clr-gray-200);
  text-align: center;
  transition: transform var(--tr-normal), box-shadow var(--tr-normal);
  position: relative;
  overflow: hidden;
}
.value-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--clr-primary);
  transform: scaleX(0);
  transition: transform var(--tr-normal);
}
.value-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.value-card:hover::before { transform: scaleX(1); }

.value-card-featured {
  background: var(--clr-primary);
  border-color: var(--clr-primary);
}
.value-card-featured .value-title,
.value-card-featured .value-desc { color: var(--clr-white); }
.value-card-featured::before { background: var(--clr-accent); transform: scaleX(1); }

.value-icon-wrap {
  width: 80px; height: 80px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--sp-lg);
}
.value-icon-blue { background: rgba(0,51,102,0.1); }
.value-icon-green { background: rgba(102,204,0,0.15); }
.value-card-featured .value-icon-wrap { background: rgba(255,255,255,0.15); }
.value-icon { font-size: 2rem; color: var(--clr-primary); }
.value-icon-green .value-icon { color: var(--clr-accent-d); }
.value-card-featured .value-icon { color: var(--clr-accent); }

.value-title {
  font-size: 1.25rem;
  font-weight: var(--fw-bold);
  color: var(--clr-gray-900);
  margin-bottom: var(--sp-md);
}
.value-desc {
  font-size: 0.9375rem;
  color: var(--clr-gray-600);
  line-height: 1.7;
  margin-bottom: var(--sp-lg);
}
.value-badge {
  display: inline-block;
  padding: 6px 18px;
  background: rgba(0,51,102,0.08);
  color: var(--clr-primary);
  font-size: 0.8125rem;
  font-weight: var(--fw-bold);
  border-radius: var(--r-pill);
}
.value-badge-green {
  background: rgba(102,204,0,0.15);
  color: var(--clr-accent-d);
}
.value-card-featured .value-badge { background: rgba(255,255,255,0.2); color: var(--clr-white); }

/* ==========================================================================
   SERVICES
   ========================================================================== */
.services { padding: var(--sp-3xl) 0; background: var(--clr-white); }

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  max-width: 100%;
}
/* 5번째 카드가 있을 때 2열 하단 정렬 */
.services-grid .service-card:nth-child(4),
.services-grid .service-card:nth-child(5) {
  border-top: 1px solid var(--clr-gray-200);
}

.service-card {
  position: relative;
  overflow: hidden;
  background: var(--clr-white);
  border: 1px solid var(--clr-gray-200);
  transition: transform var(--tr-normal), box-shadow var(--tr-normal);
}
.service-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }

.service-img-wrap {
  position: relative;
  height: 240px;
  overflow: hidden;
}
.service-img {
  width: 100%; height: 100%;
  background-size: cover;
  background-position: center;
  transition: transform var(--tr-slow);
}
.service-card:hover .service-img { transform: scale(1.06); }

/* 실제 사진 적용 시 img 태그용 */
.service-img-photo {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  transition: transform var(--tr-slow);
}
.service-card:hover .service-img-photo { transform: scale(1.06); }

/* Service image placeholders with gradient backgrounds */
.service-img-pipe {
  background: linear-gradient(135deg, #0d1529 0%, #1a2a4a 50%, #0a1832 100%);
  position: relative;
}
.service-img-pipe::after {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 200 200'%3E%3Ccircle cx='100' cy='100' r='60' fill='none' stroke='%2366CC00' stroke-width='3' opacity='0.4'/%3E%3Ccircle cx='100' cy='100' r='45' fill='none' stroke='%234d9fff' stroke-width='2' opacity='0.3'/%3E%3Cline x1='100' y1='40' x2='100' y2='160' stroke='%2366CC00' stroke-width='1.5' opacity='0.3'/%3E%3Cline x1='40' y1='100' x2='160' y2='100' stroke='%2366CC00' stroke-width='1.5' opacity='0.3'/%3E%3C/svg%3E") center/100px no-repeat;
}
.service-img-plate {
  background: linear-gradient(135deg, #111a33 0%, #1c2e50 50%, #0d1529 100%);
}
.service-img-plate::after {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 200 200'%3E%3Crect x='30' y='60' width='140' height='80' rx='4' fill='none' stroke='%2366CC00' stroke-width='2' opacity='0.4'/%3E%3Crect x='50' y='80' width='100' height='40' rx='2' fill='none' stroke='%234d9fff' stroke-width='1.5' opacity='0.3'/%3E%3Cline x1='60' y1='70' x2='140' y2='70' stroke='%2366CC00' stroke-width='1' opacity='0.25'/%3E%3C/svg%3E") center/100px no-repeat;
}
.service-img-bar {
  background: linear-gradient(135deg, #0a1832 0%, #162040 50%, #0a1832 100%);
}
.service-img-bar::after {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 200 200'%3E%3Crect x='40' y='80' width='120' height='20' rx='2' fill='none' stroke='%2366CC00' stroke-width='2' opacity='0.4'/%3E%3Crect x='40' y='110' width='120' height='20' rx='2' fill='none' stroke='%2366CC00' stroke-width='2' opacity='0.35'/%3E%3Crect x='40' y='50' width='120' height='20' rx='2' fill='none' stroke='%234d9fff' stroke-width='1.5' opacity='0.3'/%3E%3C/svg%3E") center/100px no-repeat;
}
.service-img-deburr {
  background: linear-gradient(135deg, #0d1f3c 0%, #1a3a5c 50%, #0a1832 100%);
}
.service-img-deburr::after {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 200 200'%3E%3Ccircle cx='100' cy='100' r='50' fill='none' stroke='%2366CC00' stroke-width='2' opacity='0.4' stroke-dasharray='6 4'/%3E%3Cline x1='70' y1='80' x2='130' y2='120' stroke='%2366CC00' stroke-width='2' opacity='0.35'/%3E%3Cline x1='130' y1='80' x2='70' y2='120' stroke='%234d9fff' stroke-width='1.5' opacity='0.3'/%3E%3Ccircle cx='100' cy='100' r='10' fill='none' stroke='%2366CC00' stroke-width='2' opacity='0.5'/%3E%3C/svg%3E") center/100px no-repeat;
}
.service-img-bending {
  background: linear-gradient(135deg, #101e38 0%, #1c3254 50%, #0d1c36 100%);
}
.service-img-bending::after {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 200 200'%3E%3Cpath d='M50 140 L100 140 Q130 140 130 110 L130 60' fill='none' stroke='%2366CC00' stroke-width='3' opacity='0.5' stroke-linecap='round'/%3E%3Cpath d='M60 140 L100 140 Q120 140 120 110 L120 60' fill='none' stroke='%234d9fff' stroke-width='1.5' opacity='0.3' stroke-linecap='round'/%3E%3Ccircle cx='100' cy='140' r='5' fill='%2366CC00' opacity='0.4'/%3E%3C/svg%3E") center/100px no-repeat;
}

.service-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.3), transparent);
}

.service-body {
  padding: var(--sp-lg);
  background: var(--clr-primary);
}
.service-icon-sm {
  width: 36px; height: 36px;
  background: rgba(255,255,255,0.1);
  border-radius: var(--r-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--sp-sm);
  color: var(--clr-accent);
  font-size: 1rem;
}
.service-title {
  font-size: 1.125rem;
  font-weight: var(--fw-bold);
  color: var(--clr-white);
  margin-bottom: var(--sp-sm);
}
.service-desc {
  font-size: 0.875rem;
  color: rgba(255,255,255,0.75);
  line-height: 1.6;
  margin-bottom: var(--sp-md);
}
.service-features {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: var(--sp-md);
}
.service-features li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8125rem;
  color: rgba(255,255,255,0.75);
}
.service-features .fa-check { color: var(--clr-accent); font-size: 0.75rem; }
.service-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.875rem;
  font-weight: var(--fw-semi);
  color: var(--clr-accent);
  transition: gap var(--tr-fast);
}
.service-link:hover { gap: 12px; }

/* ==========================================================================
   PORTFOLIO
   ========================================================================== */
.portfolio { padding: var(--sp-3xl) 0; background: var(--clr-gray-100); }

.portfolio-filters {
  display: flex;
  justify-content: center;
  gap: var(--sp-sm);
  flex-wrap: wrap;
  margin-bottom: var(--sp-xl);
}
.filter-btn {
  padding: 8px 20px;
  background: var(--clr-white);
  color: var(--clr-gray-600);
  font-size: 0.9rem;
  font-weight: var(--fw-medium);
  border-radius: var(--r-pill);
  border: 1px solid var(--clr-gray-200);
  transition: all var(--tr-fast);
}
.filter-btn:hover { border-color: var(--clr-primary); color: var(--clr-primary); }
.filter-btn.active {
  background: var(--clr-primary);
  color: var(--clr-white);
  border-color: var(--clr-primary);
}

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--sp-md);
}

.portfolio-item {
  position: relative;
  border-radius: var(--r-lg);
  overflow: hidden;
  aspect-ratio: 4/3;
  cursor: pointer;
  transition: transform var(--tr-normal);
}
.portfolio-item.hidden { display: none; }
.portfolio-item:hover { transform: translateY(-3px); }

.portfolio-img {
  width: 100%; height: 100%;
  overflow: hidden;
  transition: transform var(--tr-slow);
  background: #0d1529;
}
.portfolio-img img {
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
  transition: transform var(--tr-slow);
}
.portfolio-item:hover .portfolio-img img { transform: scale(1.08); }

/* Hover overlay */
.portfolio-hover {
  position: absolute;
  inset: 0;
  background: rgba(0,10,30,0.85);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--sp-lg);
  text-align: center;
  opacity: 0;
  transition: opacity var(--tr-normal);
}
.portfolio-item:hover .portfolio-hover { opacity: 1; }
.pi-title { font-size: 1rem; font-weight: var(--fw-bold); color: var(--clr-white); margin-bottom: 6px; }
.pi-desc { font-size: 0.8125rem; color: rgba(255,255,255,0.75); margin-bottom: var(--sp-sm); }
.pi-tag {
  display: inline-block;
  padding: 4px 12px;
  background: var(--clr-accent);
  color: var(--clr-gray-900);
  font-size: 0.75rem;
  font-weight: var(--fw-bold);
  border-radius: var(--r-pill);
}

.portfolio-more { text-align: center; margin-top: var(--sp-xl); }

/* ==========================================================================
   TECH COMPARISON
   ========================================================================== */
.tech { padding: var(--sp-3xl) 0; background: var(--clr-white); }

.table-wrap {
  overflow-x: auto;
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-md);
  margin-bottom: var(--sp-xl);
}

.tech-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9375rem;
}
.tech-table thead tr {
  background: var(--clr-primary);
}
.tech-table th {
  padding: 18px 24px;
  text-align: left;
  color: var(--clr-white);
  font-weight: var(--fw-bold);
  font-size: 0.9375rem;
  white-space: nowrap;
}
.th-sub { display: block; font-size: 0.75rem; font-weight: var(--fw-regular); opacity: 0.75; }
.col-mppl { background: rgba(102,204,0,0.15) !important; }
.tech-table tbody tr { border-bottom: 1px solid var(--clr-gray-200); transition: background var(--tr-fast); }
.tech-table tbody tr:hover { background: var(--clr-gray-100); }
.tech-table td { padding: 16px 24px; color: var(--clr-gray-800); }
.row-alt { background: var(--clr-gray-100); }
.row-alt:hover { background: #ebebeb !important; }
.check-icon { color: var(--clr-accent-d); font-size: 1.1rem; font-weight: var(--fw-black); margin-right: 6px; }
.x-icon { color: var(--clr-gray-400); font-size: 1.1rem; margin-right: 6px; }

.tech-cta-box {
  display: flex;
  align-items: center;
  gap: var(--sp-md);
  padding: var(--sp-lg) var(--sp-xl);
  background: var(--clr-primary);
  color: var(--clr-white);
  border-radius: var(--r-lg);
  font-weight: var(--fw-medium);
  font-size: 1rem;
  flex-wrap: wrap;
}
.tech-cta-box .fa-star { color: var(--clr-accent); flex-shrink: 0; }
.tech-cta-box span { flex: 1; }
.tech-cta-box .btn-primary { flex-shrink: 0; }

/* ==========================================================================
   FAQ
   ========================================================================== */
.faq { padding: var(--sp-3xl) 0; background: var(--clr-gray-100); }

.faq-list {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--sp-sm);
}

.faq-item {
  background: var(--clr-white);
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--clr-gray-200);
  transition: box-shadow var(--tr-normal);
}
.faq-item:hover { box-shadow: var(--shadow-sm); }

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-md);
  padding: 20px var(--sp-lg);
  text-align: left;
  font-size: 1rem;
  font-weight: var(--fw-medium);
  color: var(--clr-gray-900);
  transition: background var(--tr-fast);
}
.faq-question:hover { background: var(--clr-gray-100); }
.faq-question[aria-expanded="true"] { color: var(--clr-primary); }
.faq-question[aria-expanded="true"] .faq-icon { transform: rotate(45deg); color: var(--clr-primary); }

.faq-icon {
  flex-shrink: 0;
  width: 28px; height: 28px;
  border-radius: 50%;
  background: var(--clr-gray-100);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  color: var(--clr-gray-600);
  transition: transform var(--tr-normal), background var(--tr-fast), color var(--tr-fast);
}

.faq-answer {
  padding: 0 var(--sp-lg) var(--sp-lg);
  animation: slide-down 0.25s ease;
}
.faq-answer p {
  font-size: 0.9375rem;
  color: var(--clr-gray-600);
  line-height: 1.7;
  border-top: 1px solid var(--clr-gray-200);
  padding-top: var(--sp-md);
}
@keyframes slide-down {
  from { opacity: 0; transform: translateY(-8px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ==========================================================================
   CONTACT CTA
   ========================================================================== */
.contact-cta {
  position: relative;
  padding: var(--sp-3xl) 0;
  overflow: hidden;
}
.cta-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--clr-primary-d) 0%, var(--clr-primary) 50%, var(--clr-dark-3) 100%);
}
.cta-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(102,204,0,0.04) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(102,204,0,0.04) 1px, transparent 1px);
  background-size: 40px 40px;
}

.contact-cta .container { position: relative; z-index: 1; }
.cta-content { text-align: center; }

.cta-title {
  font-size: clamp(1.75rem, 3.5vw, 2.75rem);
  font-weight: var(--fw-black);
  color: var(--clr-white);
  margin-bottom: var(--sp-md);
}
.cta-subtitle {
  font-size: 1.0625rem;
  color: rgba(255,255,255,0.75);
  margin-bottom: var(--sp-2xl);
}

.cta-contact-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--sp-md);
  max-width: 900px;
  margin: 0 auto var(--sp-2xl);
}
.cta-contact-item {
  display: flex;
  align-items: center;
  gap: var(--sp-md);
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--r-lg);
  padding: var(--sp-md);
  text-align: left;
}
.cta-icon-wrap {
  width: 42px; height: 42px;
  background: rgba(102,204,0,0.15);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--clr-accent);
  flex-shrink: 0;
}
.cta-label { display: block; font-size: 0.75rem; color: rgba(255,255,255,0.55); margin-bottom: 3px; }
.cta-value { display: block; font-size: 0.9rem; font-weight: var(--fw-semi); color: var(--clr-white); }
.cta-value:hover { color: var(--clr-accent); }

.cta-btn-group {
  display: flex;
  justify-content: center;
  gap: var(--sp-md);
  flex-wrap: wrap;
}

/* ==========================================================================
   ABOUT
   ========================================================================== */
.about { padding: var(--sp-3xl) 0; background: var(--clr-white); }

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-2xl);
  align-items: start;
}

.about-content .section-tag { margin-bottom: var(--sp-md); }
.about-title {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: var(--fw-black);
  color: var(--clr-gray-900);
  margin-bottom: var(--sp-md);
}
.about-underline {
  width: 80px; height: 3px;
  background: linear-gradient(90deg, var(--clr-primary), var(--clr-accent));
  border-radius: 2px;
  margin-bottom: var(--sp-xl);
}

.about-blocks { display: flex; flex-direction: column; gap: var(--sp-lg); }
.about-block { padding: var(--sp-lg); background: var(--clr-gray-100); border-radius: var(--r-lg); border-left: 3px solid var(--clr-primary); }
.about-block-title {
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
  font-size: 1rem;
  font-weight: var(--fw-bold);
  color: var(--clr-primary);
  margin-bottom: var(--sp-sm);
}
.about-block p { font-size: 0.9375rem; color: var(--clr-gray-600); line-height: 1.7; }

/* 보유장비 상세 목록 */
.about-block-equip { padding-bottom: var(--sp-md); }
.equip-category { margin-top: var(--sp-md); }
.equip-category:first-of-type { margin-top: var(--sp-sm); }
.equip-cat-title {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.875rem;
  font-weight: var(--fw-bold);
  color: var(--clr-primary-l);
  margin-bottom: 8px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--clr-gray-200);
}
.equip-cat-title i { font-size: 0.8rem; color: var(--clr-accent-d); }
.equip-list { display: flex; flex-direction: column; gap: 8px; }
.equip-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 8px 10px;
  background: var(--clr-white);
  border-radius: var(--r-md);
  border-left: 2px solid var(--clr-accent);
}
.equip-name {
  font-size: 0.9rem;
  font-weight: var(--fw-bold);
  color: var(--clr-gray-900);
}
.equip-name em {
  font-style: normal;
  font-size: 0.8rem;
  color: var(--clr-accent-d);
  font-weight: var(--fw-semi);
}
.equip-spec {
  font-size: 0.775rem;
  color: var(--clr-primary-l);
  font-weight: var(--fw-medium);
}
.equip-note {
  font-size: 0.775rem;
  color: var(--clr-gray-600);
}

/* About Visual */
.about-visual { display: flex; flex-direction: column; gap: var(--sp-lg); }
.about-img-wrap {
  position: relative;
  border-radius: var(--r-xl);
  overflow: hidden;
  height: 380px;
}
.about-img-main {
  width: 100%; height: 100%;
  background-size: cover;
  background-position: center;
  position: relative;
}
/* 실제 사진 사용 시 오버레이 제거 */
.about-img-main::after,
.about-img-main::before { content: none; }

.about-img-badge {
  position: absolute;
  bottom: var(--sp-lg);
  right: var(--sp-lg);
  background: var(--clr-primary);
  border: 3px solid var(--clr-accent);
  border-radius: var(--r-lg);
  padding: var(--sp-md) var(--sp-lg);
  text-align: center;
  z-index: 2;
}
.badge-num { font-size: 2.5rem; font-weight: var(--fw-black); color: var(--clr-white); line-height: 1; display: flex; align-items: baseline; gap: 4px; }
.badge-num span { font-size: 1.25rem; color: var(--clr-accent); }
.badge-text { font-size: 0.75rem; color: rgba(255,255,255,0.7); margin-top: 4px; }

.about-stats-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-md);
}
.about-stat {
  background: var(--clr-gray-100);
  border-radius: var(--r-lg);
  padding: var(--sp-md);
  text-align: center;
  border: 1px solid var(--clr-gray-200);
}
.as-num { display: block; font-size: 1.5rem; font-weight: var(--fw-black); color: var(--clr-primary); margin-bottom: 4px; }
.as-label { font-size: 0.75rem; color: var(--clr-gray-600); }

/* ==========================================================================
   INQUIRY FORM
   ========================================================================== */
.inquiry { padding: var(--sp-3xl) 0; background: var(--clr-gray-100); }

.inquiry-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: var(--sp-2xl);
  align-items: start;
}

.inquiry-form-wrap {
  background: var(--clr-white);
  border-radius: var(--r-xl);
  padding: var(--sp-2xl);
  box-shadow: var(--shadow-md);
}

/* Form elements */
.form-row { margin-bottom: var(--sp-md); }
.form-row-2 { display: grid; grid-template-columns: 1fr 1fr; gap: var(--sp-md); }
.form-group { display: flex; flex-direction: column; gap: 6px; margin-bottom: var(--sp-md); }
.form-label {
  font-size: 0.875rem;
  font-weight: var(--fw-semi);
  color: var(--clr-gray-800);
}
.required { color: #e74c3c; }
.optional { color: var(--clr-gray-400); font-weight: var(--fw-regular); }

.form-input {
  padding: 12px 16px;
  border: 1.5px solid var(--clr-gray-200);
  border-radius: var(--r-md);
  font-family: var(--font-main);
  font-size: 0.9375rem;
  color: var(--clr-gray-900);
  background: var(--clr-white);
  transition: border-color var(--tr-fast), box-shadow var(--tr-fast);
  width: 100%;
}
.form-input:focus {
  outline: none;
  border-color: var(--clr-primary);
  box-shadow: 0 0 0 3px rgba(0,51,102,0.1);
}
.form-input.error { border-color: #e74c3c; }
.form-select { cursor: pointer; appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23999' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 14px center; padding-right: 40px; }
.form-textarea { resize: vertical; min-height: 140px; }
.form-error { font-size: 0.8125rem; color: #e74c3c; min-height: 18px; }

/* File upload */
.file-upload-wrap { display: flex; flex-direction: column; gap: 8px; }
.file-input { position: absolute; opacity: 0; pointer-events: none; width: 0; height: 0; }
.file-upload-label {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-sm);
  padding: 10px 20px;
  background: var(--clr-gray-100);
  border: 1.5px dashed var(--clr-gray-400);
  border-radius: var(--r-md);
  color: var(--clr-gray-600);
  font-size: 0.875rem;
  cursor: pointer;
  transition: all var(--tr-fast);
  width: fit-content;
}
.file-upload-label:hover { border-color: var(--clr-primary); color: var(--clr-primary); background: rgba(0,51,102,0.04); }
.file-name { font-size: 0.8125rem; color: var(--clr-gray-600); }

/* Privacy checkbox */
.form-check-group .form-check-label {
  display: flex;
  align-items: flex-start;
  gap: var(--sp-sm);
  font-size: 0.875rem;
  color: var(--clr-gray-600);
  cursor: pointer;
}
.form-check-label input[type="checkbox"] { margin-top: 2px; flex-shrink: 0; accent-color: var(--clr-primary); }

.btn-submit {
  width: 100%;
  justify-content: center;
  padding: 16px;
  font-size: 1.0625rem;
}

.form-success {
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
  padding: var(--sp-md);
  background: rgba(102,204,0,0.1);
  border: 1px solid rgba(102,204,0,0.3);
  border-radius: var(--r-md);
  color: var(--clr-accent-d);
  font-weight: var(--fw-medium);
  margin-top: var(--sp-md);
}

/* Guide sidebar */
.inquiry-guide {
  display: flex;
  flex-direction: column;
  gap: var(--sp-lg);
}
.guide-title {
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
  font-size: 1.125rem;
  font-weight: var(--fw-bold);
  color: var(--clr-gray-900);
  padding-bottom: var(--sp-md);
  border-bottom: 2px solid var(--clr-primary);
}
.guide-list {
  display: flex;
  flex-direction: column;
  gap: var(--sp-sm);
}
.guide-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--clr-gray-600);
  line-height: 1.5;
  padding: 10px;
  background: var(--clr-white);
  border-radius: var(--r-md);
}
.guide-list .fa-file-alt, .guide-list .fa-clock, .guide-list .fa-phone-alt, .guide-list .fa-calculator {
  color: var(--clr-accent-d);
  flex-shrink: 0;
  margin-top: 2px;
}

.guide-contact {
  background: var(--clr-white);
  border-radius: var(--r-lg);
  padding: var(--sp-lg);
  border: 1px solid var(--clr-gray-200);
}
.guide-contact-title {
  font-size: 1rem;
  font-weight: var(--fw-bold);
  color: var(--clr-primary);
  margin-bottom: var(--sp-md);
  padding-bottom: var(--sp-sm);
  border-bottom: 1px solid var(--clr-gray-200);
}
.gc-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 10px 0;
  border-bottom: 1px solid var(--clr-gray-100);
  font-size: 0.875rem;
}
.gc-item:last-child { border-bottom: none; }
.gc-item .fas { color: var(--clr-primary); flex-shrink: 0; margin-top: 2px; }
.gc-name { display: block; color: var(--clr-gray-600); font-size: 0.8125rem; }
.gc-phone { display: block; color: var(--clr-primary); font-weight: var(--fw-semi); }
.gc-phone:hover { color: var(--clr-accent-d); }

.guide-map { margin-top: var(--sp-md); }
.map-placeholder {
  background: var(--clr-gray-100);
  border: 2px dashed var(--clr-gray-400);
  border-radius: var(--r-lg);
  height: 180px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--sp-sm);
  color: var(--clr-gray-600);
  text-align: center;
  padding: var(--sp-md);
}
.map-placeholder .fa-map-marker-alt { font-size: 2rem; color: var(--clr-primary); }
.map-placeholder p { font-size: 0.875rem; line-height: 1.5; }

/* ==========================================================================
   FOOTER
   ========================================================================== */
.site-footer {
  background: var(--clr-gray-800);
  color: var(--clr-gray-200);
}

.footer-top {
  padding: var(--sp-2xl) 0 var(--sp-xl);
  border-top: 3px solid var(--clr-primary);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.5fr;
  gap: var(--sp-xl);
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
  margin-bottom: var(--sp-sm);
}
.logo-name-footer { font-size: 1rem; color: rgba(255,255,255,0.7); font-weight: var(--fw-semi); }
.footer-company-name { font-size: 0.9375rem; font-weight: var(--fw-bold); color: var(--clr-white); margin-bottom: 4px; }
.footer-slogan { font-size: 0.875rem; color: rgba(255,255,255,0.55); margin-bottom: var(--sp-md); }
.footer-reg { font-size: 0.8125rem; color: rgba(255,255,255,0.4); }

.footer-col-title {
  font-size: 0.875rem;
  font-weight: var(--fw-bold);
  color: var(--clr-white);
  margin-bottom: var(--sp-md);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-link {
  font-size: 0.875rem;
  color: rgba(255,255,255,0.55);
  transition: color var(--tr-fast), padding-left var(--tr-fast);
}
.footer-link:hover { color: var(--clr-accent); padding-left: 6px; }

.footer-contact-list { display: flex; flex-direction: column; gap: 12px; }
.footer-contact-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.875rem;
  color: rgba(255,255,255,0.55);
  line-height: 1.4;
}
.footer-contact-list .fas { color: var(--clr-accent); flex-shrink: 0; margin-top: 2px; font-size: 0.875rem; }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: var(--sp-lg) 0;
}
.footer-bottom-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--sp-md);
  flex-wrap: wrap;
}
.footer-copy { font-size: 0.8125rem; color: rgba(255,255,255,0.4); }
.footer-legal { display: flex; align-items: center; gap: var(--sp-sm); }
.footer-legal-link { font-size: 0.8125rem; color: rgba(255,255,255,0.4); }
.footer-legal-link:hover { color: var(--clr-accent); }
.footer-legal span { color: rgba(255,255,255,0.2); }

/* ==========================================================================
   BACK TO TOP
   ========================================================================== */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 48px; height: 48px;
  background: var(--clr-primary);
  color: var(--clr-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 800;
  box-shadow: var(--shadow-lg);
  transition: all var(--tr-normal);
}
.back-to-top:hover { background: var(--clr-accent); transform: translateY(-3px); }

/* ==========================================================================
   ANIMATIONS (Scroll reveal)
   ========================================================================== */
[data-reveal] {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
[data-reveal].revealed {
  opacity: 1;
  transform: translateY(0);
}

/* ==========================================================================
   SECTION VIEW MODE — 네비 클릭 시 해당 섹션만 표시
   ========================================================================== */
/* 활성 섹션 표시 — display 제어는 JS inline style 에서 담당 */
body.view-mode section.view-active {
  display: block;
}
/* 섹션 등장 애니메이션 */
section.view-active {
  animation: section-fadein 0.45s ease both;
}
@keyframes section-fadein {
  from { opacity: 0; transform: translateY(18px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ==========================================================================
   RESPONSIVE - Tablet (1024px)
   ========================================================================== */
@media (max-width: 1024px) {
  :root { --sp-3xl: 72px; }

  .values-grid { grid-template-columns: repeat(3, 1fr); gap: var(--sp-md); }
  .services-grid { grid-template-columns: repeat(3, 1fr); }
  .portfolio-grid { grid-template-columns: repeat(3, 1fr); }
  .cta-contact-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: var(--sp-xl); }
}

/* ==========================================================================
   RESPONSIVE - Mobile (768px)
   ========================================================================== */
@media (max-width: 768px) {
  :root { --sp-3xl: 56px; --sp-xl: 24px; }

  /* Nav */
  .nav-menu, .btn-cta-nav { display: none; }
  .hamburger { display: flex; }
  .nav-container { padding: 0 var(--sp-lg); }

  /* Hero */
  .hero { min-height: 100svh; }
  .hero-content { padding: 0 var(--sp-lg); }
  .hero-stats { gap: 0; justify-content: flex-start; flex-wrap: wrap; }
  .stat-item { padding: 0 var(--sp-lg); }
  .stat-item:first-child { padding-left: 0; }

  .hero-cta-group { flex-direction: column; }
  .hero-btn { width: 100%; justify-content: center; }

  /* Values */
  .values-grid { grid-template-columns: 1fr; }

  /* Services */
  .services-grid { grid-template-columns: 1fr; }

  /* Portfolio */
  .portfolio-grid { grid-template-columns: repeat(2, 1fr); }

  /* Tech Table */
  .tech-table { font-size: 0.875rem; }
  .tech-table th, .tech-table td { padding: 12px 16px; }

  /* Contact */
  .cta-contact-grid { grid-template-columns: 1fr; }

  /* About */
  .about-grid { grid-template-columns: 1fr; }
  .about-visual { order: -1; }
  .about-img-wrap { height: 260px; }

  /* Inquiry */
  .inquiry-grid { grid-template-columns: 1fr; }
  .form-row-2 { grid-template-columns: 1fr; }
  .inquiry-form-wrap { padding: var(--sp-lg); }

  /* Footer */
  .footer-grid { grid-template-columns: 1fr; gap: var(--sp-lg); }
  .footer-bottom-inner { flex-direction: column; text-align: center; }
  .container { padding: 0 var(--sp-lg); }

  /* Back to top */
  .back-to-top { bottom: 20px; right: 20px; width: 42px; height: 42px; }
}

/* ==========================================================================
   RESPONSIVE - Small Mobile (480px)
   ========================================================================== */
@media (max-width: 480px) {
  .hero-stats { gap: 0; }
  .stat-item { padding: 0 var(--sp-md); }
  .portfolio-grid { grid-template-columns: 1fr; }
  .cta-btn-group { flex-direction: column; align-items: center; }
  .tech-cta-box { flex-direction: column; text-align: center; }
  .hero-badge { font-size: 0.8125rem; padding: 7px 14px; }
}

/* ==========================================================================
   FOCUS VISIBLE (Accessibility)
   ========================================================================== */
:focus-visible {
  outline: 2px solid var(--clr-accent);
  outline-offset: 3px;
}