/* ================================================
   MOBILIX — style.css
   Brand: Navy #1E345C | Gold #D7B06A
   Beyond Mobility Beyond Experience
================================================ */

/* ── Variables ── */
:root {
  --navy:          #1E345C;
  --navy-dark:     #0f1e38;
  --navy-deeper:   #0a1428;
  --gold:          #D7B06A;
  --gold-light:    #E0BE7D;
  --gold-dark:     #b8922f;
  --white:         #ffffff;
  --gray-100:      #f5f7fa;
  --gray-200:      #e8edf5;
  --gray-400:      #9aa5bb;
  --gray-600:      #5d6b85;
  --text-dark:     #1a2540;
  --text-muted:    #6b7a96;

  --gradient-navy: linear-gradient(135deg, #0a1428 0%, #1E345C 60%, #2a4a7a 100%);
  --gradient-gold: linear-gradient(135deg, #D7B06A, #E0BE7D);
  --gradient-hero: linear-gradient(135deg, #0a1428 0%, #1E345C 50%, #0d2244 100%);

  --shadow-card:   0 8px 32px rgba(30, 52, 92, 0.15);
  --shadow-gold:   0 4px 24px rgba(215, 176, 106, 0.3);
  --radius:        16px;
  --radius-sm:     8px;
  --transition:    all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── Reset & Base ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: 'Noto Sans KR', 'Inter', sans-serif;
  background: #fff;
  color: var(--text-dark);
  line-height: 1.6;
  overflow-x: hidden;
}
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

/* ── Utilities ── */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

.section-label {
  font-family: 'Inter', sans-serif;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 12px;
  display: block;
}
.section-title {
  font-size: clamp(28px, 4vw, 48px);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 16px;
}
.section-desc {
  font-size: clamp(15px, 1.5vw, 17px);
  color: var(--text-muted);
  line-height: 1.8;
  max-width: 600px;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--gradient-gold);
  color: var(--navy-dark);
  font-weight: 700;
  font-size: 15px;
  padding: 14px 28px;
  border-radius: 50px;
  transition: var(--transition);
  box-shadow: var(--shadow-gold);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(215, 176, 106, 0.5);
}
.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: var(--white);
  font-weight: 600;
  font-size: 15px;
  padding: 13px 28px;
  border-radius: 50px;
  border: 1.5px solid rgba(255,255,255,0.5);
  transition: var(--transition);
}
.btn-outline:hover {
  border-color: var(--gold);
  color: var(--gold);
  background: rgba(215, 176, 106, 0.08);
}

/* ── Scroll Reveal ── */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal-left {
  opacity: 0;
  transform: translateX(-40px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal-left.visible { opacity: 1; transform: translateX(0); }
.reveal-right {
  opacity: 0;
  transform: translateX(40px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal-right.visible { opacity: 1; transform: translateX(0); }
.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }
.delay-4 { transition-delay: 0.4s; }

/* ================================================
   HEADER
================================================ */
#header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 0 24px;
  transition: var(--transition);
}
#header.scrolled {
  background: rgba(10, 20, 40, 0.93);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 2px 24px rgba(0,0,0,0.3);
}
.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  transition: height 0.3s;
}
#header.scrolled .header-inner { height: 60px; }

/* Logo Image */
.logo { display: flex; align-items: center; }
.logo-img {
  height: 36px;
  width: auto;
  object-fit: contain;
  /* 다크 배경 위에서 흰색으로 보이도록 필터 적용 */
  filter: brightness(0) invert(1);
  transition: var(--transition);
}
#header.scrolled .logo-img {
  height: 30px;
}

/* Nav */
.nav { display: flex; align-items: center; gap: 4px; }
.nav-link {
  font-size: 14px;
  font-weight: 500;
  color: rgba(255,255,255,0.85);
  padding: 8px 14px;
  border-radius: 8px;
  transition: var(--transition);
  white-space: nowrap;
}
.nav-link:hover { color: var(--gold); background: rgba(215,176,106,0.1); }

/* Dropdown */
.dropdown { position: relative; }
.dropdown-menu {
  position: absolute;
  top: calc(100% + 12px);
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  background: rgba(10,20,40,0.97);
  backdrop-filter: blur(16px);
  border: 1px solid rgba(215,176,106,0.15);
  border-radius: 16px;
  padding: 20px;
  min-width: 560px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s, transform 0.2s;
}
.dropdown:hover .dropdown-menu {
  opacity: 1;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}
.dropdown-item { padding: 12px 14px; border-radius: 10px; transition: var(--transition); }
.dropdown-item:hover { background: rgba(215,176,106,0.1); }
.dropdown-item-title { font-size: 13px; font-weight: 700; color: var(--gold); margin-bottom: 4px; }
.dropdown-item-desc { font-size: 11px; color: rgba(255,255,255,0.55); line-height: 1.5; }

.header-cta { display: flex; align-items: center; gap: 12px; }
.header-cta .btn-primary { padding: 10px 20px; font-size: 13px; }

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  cursor: pointer;
}
.hamburger span {
  display: block;
  width: 24px; height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: var(--transition);
}

/* Mobile Menu */
.mobile-menu {
  display: none;
  position: fixed;
  inset: 0;
  background: var(--navy-deeper);
  z-index: 999;
  flex-direction: column;
  padding: 80px 32px 40px;
  overflow-y: auto;
}
.mobile-menu.open { display: flex; }
.mobile-menu-close {
  position: absolute;
  top: 20px; right: 24px;
  color: var(--white);
  font-size: 28px;
  padding: 8px;
}
/* 모바일 메뉴 내 로고 */
.mobile-logo-wrap {
  position: absolute;
  top: 18px; left: 24px;
}
.mobile-logo-img {
  height: 28px;
  width: auto;
  filter: brightness(0) invert(1);
}
.mobile-nav-link {
  font-size: 20px;
  font-weight: 700;
  color: var(--white);
  padding: 14px 0;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.mobile-sub-menu { display: none; padding: 8px 0 8px 16px; }
.mobile-sub-menu.open { display: block; }
.mobile-sub-link { font-size: 15px; color: rgba(255,255,255,0.7); padding: 8px 0; display: block; }
.mobile-cta { margin-top: 32px; }
.mobile-cta .btn-primary { width: 100%; justify-content: center; font-size: 16px; padding: 16px; }
.mobile-contact-info {
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,0.1);
  font-size: 13px;
  color: rgba(255,255,255,0.5);
  line-height: 2;
}

/* ================================================
   HERO — Beyond Mobility Beyond Experience 중심
================================================ */
#hero {
  min-height: 100vh;
  background: var(--gradient-hero);
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding-top: 72px;
}
#hero-canvas { position: absolute; inset: 0; pointer-events: none; }

/* 격자 패턴 */
#hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(215,176,106,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(215,176,106,0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
}
/* 방사형 글로우 */
#hero::after {
  content: '';
  position: absolute;
  width: 900px; height: 900px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(215,176,106,0.07) 0%, transparent 70%);
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 60px 24px 40px;
  max-width: 980px;
  margin: 0 auto;
}

/* 배지 */
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(215,176,106,0.12);
  border: 1px solid rgba(215,176,106,0.3);
  border-radius: 50px;
  padding: 6px 20px;
  font-size: 11px;
  font-weight: 700;
  color: var(--gold);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 40px;
}
.hero-badge::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--gold);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.5; transform: scale(0.8); }
}

/* ── BEYOND 핵심 문구 ── */
.hero-beyond-wrap {
  margin-bottom: 32px;
}
.hero-beyond-line {
  display: block;
  font-family: 'Inter', sans-serif;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  line-height: 1.1;
}
.hero-beyond-line.line-top {
  font-size: clamp(42px, 8vw, 96px);
  color: var(--white);
}
.hero-beyond-line.line-top .hl { color: var(--gold); }

.hero-beyond-line.line-bottom {
  font-size: clamp(42px, 8vw, 96px);
  /* 골드 아웃라인 + 투명 채움 */
  color: transparent;
  -webkit-text-stroke: 2px var(--gold);
  text-stroke: 2px var(--gold);
}

/* 구분선 + 서브 카피 */
.hero-divider {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin: 24px auto;
  max-width: 560px;
}
.hero-divider-line {
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(215,176,106,0.5), transparent);
}
.hero-divider-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--gold);
}

.hero-sub {
  font-size: clamp(15px, 1.8vw, 20px);
  color: rgba(255,255,255,0.65);
  line-height: 1.8;
  max-width: 640px;
  margin: 0 auto 40px;
}
.hero-sub strong { color: var(--gold-light); font-weight: 700; }

/* CTA 버튼 */
.hero-cta {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 60px;
}
.hero-cta .btn-primary  { font-size: 16px; padding: 16px 36px; }
.hero-cta .btn-outline  { font-size: 16px; padding: 15px 36px; }

/* 4대 사업 카드 */
.hero-biz-cards {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 24px 56px;
}
.hero-biz-card {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(215,176,106,0.15);
  border-radius: 12px;
  padding: 20px 16px;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
}
.hero-biz-card:hover {
  background: rgba(215,176,106,0.1);
  border-color: var(--gold);
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(215,176,106,0.2);
}
.hero-biz-card-icon { font-size: 28px; margin-bottom: 10px; color: var(--gold); }
.hero-biz-card-title { font-size: 13px; font-weight: 700; color: var(--white); line-height: 1.4; margin-bottom: 4px; }
.hero-biz-card-sub  { font-size: 11px; color: rgba(255,255,255,0.45); }

/* 스크롤 유도 */
.scroll-indicator {
  position: absolute;
  bottom: 24px; left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  color: rgba(255,255,255,0.35);
  font-size: 10px;
  letter-spacing: 0.15em;
  animation: bounce 2s infinite;
  z-index: 2;
}
@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50%       { transform: translateX(-50%) translateY(7px); }
}
.scroll-indicator i { font-size: 18px; }

/* ================================================
   BRAND STATEMENT BAND
================================================ */
.brand-band {
  background: var(--navy-deeper);
  padding: 40px 0;
  text-align: center;
  overflow: hidden;
  position: relative;
}
.brand-band::before, .brand-band::after {
  content: '';
  position: absolute;
  left: 0; right: 0;
  height: 1px;
}
.brand-band::before { top: 0;    background: linear-gradient(90deg, transparent, rgba(215,176,106,0.3), transparent); }
.brand-band::after  { bottom: 0; background: linear-gradient(90deg, transparent, rgba(215,176,106,0.3), transparent); }

.brand-band-main {
  font-family: 'Inter', sans-serif;
  font-size: clamp(18px, 3vw, 32px);
  font-weight: 900;
  color: var(--white);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  margin-bottom: 8px;
}
.brand-band-main span { color: var(--gold); }
.brand-band-sub {
  font-size: clamp(12px, 1.2vw, 14px);
  color: rgba(255,255,255,0.4);
  letter-spacing: 0.08em;
}

/* ================================================
   ABOUT
================================================ */
#about { padding: 100px 0; background: var(--white); }

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.about-visual { position: relative; }
.about-img-wrap {
  border-radius: 20px;
  overflow: hidden;
  background: var(--gradient-navy);
  aspect-ratio: 4/3;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}
.about-img-placeholder { text-align: center; padding: 40px; }
.about-location-badge {
  position: absolute;
  bottom: 24px; left: 24px;
  background: rgba(255,255,255,0.95);
  border-radius: 12px;
  padding: 12px 16px;
  display: flex;
  align-items: flex-start;
  gap: 10px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.15);
  max-width: 220px;
}
.about-location-badge i { color: var(--gold); font-size: 18px; margin-top: 2px; }
.about-location-badge-text { font-size: 11px; line-height: 1.6; color: var(--navy); font-weight: 600; }
.about-location-badge-text span { font-size: 10px; font-weight: 400; color: var(--gray-600); }

.about-vision-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 32px;
}
.vision-card {
  background: var(--gray-100);
  border-radius: 12px;
  padding: 18px;
  transition: var(--transition);
}
.vision-card:hover { background: var(--navy); }
.vision-card:hover .vision-card-title { color: var(--gold); }
.vision-card:hover .vision-card-desc  { color: rgba(255,255,255,0.7); }
.vision-card-icon  { font-size: 22px; color: var(--gold); margin-bottom: 8px; }
.vision-card-title { font-size: 14px; font-weight: 700; color: var(--navy); margin-bottom: 4px; }
.vision-card-desc  { font-size: 12px; color: var(--text-muted); line-height: 1.5; }

.about-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 40px;
  padding-top: 40px;
  border-top: 1px solid var(--gray-200);
}
.stat-item { text-align: center; }
.stat-num {
  font-family: 'Inter', sans-serif;
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 900;
  color: var(--navy);
  line-height: 1;
  margin-bottom: 4px;
}
.stat-num span { color: var(--gold); }
.stat-label { font-size: 12px; color: var(--text-muted); font-weight: 500; }

/* ================================================
   AUTOMOTIVE SW
================================================ */
#automotive { padding: 100px 0; background: var(--navy-deeper); }
#automotive .section-title { color: var(--white); }
#automotive .section-desc  { color: rgba(255,255,255,0.6); }

.automotive-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 60px;
}
.auto-card {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(215,176,106,0.1);
  border-radius: 20px;
  padding: 32px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.auto-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--gradient-gold);
  opacity: 0;
  transition: opacity 0.3s;
}
.auto-card:hover { border-color: rgba(215,176,106,0.3); transform: translateY(-4px); box-shadow: 0 16px 48px rgba(0,0,0,0.4); }
.auto-card:hover::before { opacity: 1; }

.auto-card-visual {
  height: 200px;
  border-radius: 12px;
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}
.auto-card-visual.ivi { background: linear-gradient(135deg, #0d2244, #1a3a6a); }
.auto-card-visual.av  { background: linear-gradient(135deg, #0a1f3a, #142d55); }

/* IVI Mockup */
.ivi-mockup { width: 100%; height: 100%; display: flex; align-items: center; justify-content: center; padding: 20px; }
.ivi-screen {
  width: 85%; height: 75%;
  border: 2px solid rgba(215,176,106,0.4);
  border-radius: 10px;
  background: rgba(10,20,40,0.8);
  display: flex;
  overflow: hidden;
}
.ivi-cluster {
  width: 30%;
  border-right: 1px solid rgba(215,176,106,0.2);
  padding: 12px 8px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  align-items: center;
}
.ivi-speed-ring {
  width: 50px; height: 50px;
  border-radius: 50%;
  border: 3px solid rgba(215,176,106,0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Inter', monospace;
  font-size: 12px;
  font-weight: 700;
  color: var(--gold);
}
.ivi-bar { width: 100%; height: 4px; background: rgba(255,255,255,0.1); border-radius: 2px; overflow: hidden; }
.ivi-bar-fill { height: 100%; background: var(--gold); border-radius: 2px; }
.ivi-center { flex: 1; padding: 10px; display: flex; flex-direction: column; gap: 6px; }
.ivi-nav {
  flex: 1;
  border-radius: 6px;
  background: rgba(30,52,92,0.6);
  display: flex;
  align-items: center;
  justify-content: center;
}
.ivi-nav-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--gold); box-shadow: 0 0 8px var(--gold); }
.ivi-controls { display: flex; gap: 4px; }
.ivi-ctrl-btn { flex: 1; height: 20px; border-radius: 4px; background: rgba(215,176,106,0.15); border: 1px solid rgba(215,176,106,0.2); }

/* AV Sensor */
.av-mockup { width: 100%; height: 100%; display: flex; align-items: center; justify-content: center; position: relative; }
.av-circle {
  width: 120px; height: 120px;
  border-radius: 50%;
  border: 1px solid rgba(215,176,106,0.3);
  position: absolute;
  animation: radar-spin 4s linear infinite;
}
.av-circle:nth-child(1) { width: 40px;  height: 40px;  border-color: var(--gold); border-width: 2px; }
.av-circle:nth-child(2) { width: 80px;  height: 80px;  animation-duration: 6s; }
.av-circle:nth-child(3) { width: 120px; height: 120px; animation-duration: 8s; animation-direction: reverse; }
.av-circle:nth-child(4) { width: 160px; height: 160px; animation-duration: 10s; }
.av-sweep {
  position: absolute;
  width: 60px; height: 1px;
  background: linear-gradient(90deg, var(--gold), transparent);
  transform-origin: left center;
  animation: radar-spin 3s linear infinite;
  box-shadow: 0 0 8px var(--gold);
}
@keyframes radar-spin { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }
.av-dot { position: absolute; width: 5px; height: 5px; border-radius: 50%; background: var(--gold); box-shadow: 0 0 6px var(--gold); }

.auto-card-label { font-size: 11px; font-weight: 700; letter-spacing: 0.15em; text-transform: uppercase; color: var(--gold); margin-bottom: 8px; }
.auto-card-title { font-size: 22px; font-weight: 800; color: var(--white); margin-bottom: 12px; }
.auto-card-desc  { font-size: 14px; color: rgba(255,255,255,0.55); line-height: 1.7; margin-bottom: 20px; }
.tech-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.tech-tag {
  font-size: 11px;
  font-weight: 600;
  color: rgba(215,176,106,0.9);
  background: rgba(215,176,106,0.08);
  border: 1px solid rgba(215,176,106,0.2);
  padding: 4px 10px;
  border-radius: 50px;
}

/* ================================================
   AUTONOMOUS SERVICE / ROii
================================================ */
#roii { padding: 100px 0; background: var(--white); }

.roii-hero-wrap {
  background: var(--gradient-navy);
  border-radius: 24px;
  padding: 56px;
  margin-bottom: 32px;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 60px;
  align-items: center;
  position: relative;
  overflow: hidden;
}
.roii-hero-wrap::before {
  content: '';
  position: absolute;
  width: 400px; height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(215,176,106,0.08) 0%, transparent 70%);
  right: -100px; top: -100px;
}
.roii-shuttle {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(215,176,106,0.2);
  border-radius: 16px;
  aspect-ratio: 16/9;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}
.roii-shuttle-inner { text-align: center; padding: 24px; }
.roii-shuttle-name  { font-family: 'Inter', sans-serif; font-size: 48px; font-weight: 900; color: var(--gold); letter-spacing: -0.02em; line-height: 1; margin-bottom: 8px; }
.roii-shuttle-sub   { font-size: 13px; color: rgba(255,255,255,0.5); letter-spacing: 0.15em; text-transform: uppercase; }
.roii-badge-lv4 {
  position: absolute; top: 16px; right: 16px;
  background: var(--gold); color: var(--navy-dark);
  font-size: 10px; font-weight: 900;
  padding: 4px 10px; border-radius: 50px; letter-spacing: 0.1em;
}
.roii-road { position: absolute; bottom: 0; left: 0; right: 0; height: 3px; background: linear-gradient(90deg, transparent, rgba(215,176,106,0.6), transparent); }
.roii-cities { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; margin-top: 12px; }
.roii-city-badge {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(215,176,106,0.15);
  border-radius: 8px;
  padding: 10px 12px;
  text-align: center;
  transition: var(--transition);
}
.roii-city-badge:hover { background: rgba(215,176,106,0.1); border-color: var(--gold); }
.roii-city-badge i    { color: var(--gold); font-size: 14px; margin-bottom: 4px; display: block; }
.roii-city-badge span { font-size: 12px; font-weight: 600; color: rgba(255,255,255,0.8); }
.roii-info .section-title { color: var(--white); }
.roii-info .section-desc  { color: rgba(255,255,255,0.65); }
.roii-info .btn-primary   { margin-top: 24px; }

.addon-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.addon-card {
  background: var(--gray-100);
  border-radius: 16px;
  padding: 28px;
  transition: var(--transition);
  border: 1px solid transparent;
}
.addon-card:hover { background: var(--navy); border-color: rgba(215,176,106,0.2); transform: translateY(-4px); box-shadow: var(--shadow-card); }
.addon-card:hover .addon-title   { color: var(--gold); }
.addon-card:hover .addon-desc    { color: rgba(255,255,255,0.6); }
.addon-card:hover .addon-feature { color: rgba(255,255,255,0.5); border-color: rgba(255,255,255,0.1); }
.addon-card:hover .addon-feature i { color: var(--gold); }
.addon-icon {
  width: 52px; height: 52px;
  border-radius: 12px;
  background: var(--gradient-gold);
  display: flex; align-items: center; justify-content: center;
  font-size: 22px; color: var(--navy-dark); margin-bottom: 16px;
}
.addon-title   { font-size: 18px; font-weight: 700; color: var(--navy); margin-bottom: 8px; }
.addon-desc    { font-size: 13px; color: var(--text-muted); line-height: 1.6; margin-bottom: 16px; }
.addon-features { display: flex; flex-direction: column; gap: 6px; }
.addon-feature {
  font-size: 12px; color: var(--text-muted);
  display: flex; align-items: center; gap: 6px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--gray-200);
}
.addon-feature:last-child { border-bottom: none; }
.addon-feature i { color: var(--gold); font-size: 11px; }

/* ================================================
   SI BUSINESS
================================================ */
#si { padding: 100px 0; background: var(--gray-100); }

.si-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 60px; }
.si-card {
  background: var(--white);
  border-radius: 20px;
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: var(--transition);
}
.si-card:hover { transform: translateY(-8px); box-shadow: 0 24px 64px rgba(30,52,92,0.2); }
.si-card-visual {
  height: 180px;
  display: flex; align-items: center; justify-content: center;
  position: relative; overflow: hidden;
}
.si-card-visual.v1 { background: linear-gradient(135deg, #0d2244, #1E345C); }
.si-card-visual.v2 { background: linear-gradient(135deg, #1a2540, #2a3a5a); }
.si-card-visual.v3 { background: linear-gradient(135deg, #0f1e38, #1a2e50); }

/* 3D Cube */
.cube-wrap { perspective: 300px; width: 80px; height: 80px; }
.cube {
  width: 80px; height: 80px;
  position: relative;
  transform-style: preserve-3d;
  animation: cube-rotate 8s linear infinite;
}
@keyframes cube-rotate { from { transform: rotateX(20deg) rotateY(0deg); } to { transform: rotateX(20deg) rotateY(360deg); } }
.cube-face {
  position: absolute;
  width: 80px; height: 80px;
  border: 1.5px solid rgba(215,176,106,0.5);
  background: rgba(215,176,106,0.03);
}
.cube-face.front  { transform: translateZ(40px); }
.cube-face.back   { transform: rotateY(180deg) translateZ(40px); }
.cube-face.left   { transform: rotateY(-90deg) translateZ(40px); }
.cube-face.right  { transform: rotateY(90deg) translateZ(40px); }
.cube-face.top    { transform: rotateX(90deg) translateZ(40px); }
.cube-face.bottom { transform: rotateX(-90deg) translateZ(40px); }

/* ITSM Diagram */
.itsm-diagram { position: relative; width: 150px; height: 120px; }
.itsm-node {
  position: absolute;
  width: 32px; height: 32px;
  border-radius: 50%;
  background: rgba(215,176,106,0.15);
  border: 2px solid rgba(215,176,106,0.4);
  display: flex; align-items: center; justify-content: center;
}
.itsm-node.center { width: 44px; height: 44px; background: rgba(215,176,106,0.25); border-color: var(--gold); top: 38px; left: 53px; }
.itsm-node i { font-size: 12px; color: var(--gold); }
.itsm-node:nth-child(1) { top: 0;   left: 0;    }
.itsm-node:nth-child(2) { top: 0;   left: 59px; }
.itsm-node:nth-child(3) { top: 0;   right: 0;   }
.itsm-node:nth-child(4) { top: 88px; left: 16px; }
.itsm-node:nth-child(5) { top: 88px; right: 16px; }

.si-card-body  { padding: 24px; }
.si-card-num   { font-family: 'Inter', sans-serif; font-size: 36px; font-weight: 900; color: rgba(30,52,92,0.06); line-height: 1; margin-bottom: -8px; }
.si-card-title { font-size: 18px; font-weight: 700; color: var(--navy); margin-bottom: 8px; }
.si-card-desc  { font-size: 13px; color: var(--text-muted); line-height: 1.7; margin-bottom: 16px; }
.si-card-list  { display: flex; flex-direction: column; gap: 6px; }
.si-list-item  { font-size: 12px; color: var(--text-muted); display: flex; align-items: center; gap: 8px; }
.si-list-item::before { content: ''; width: 4px; height: 4px; border-radius: 50%; background: var(--gold); flex-shrink: 0; }

/* ================================================
   ROBOT DISTRIBUTION
================================================ */
#robot { padding: 100px 0; background: var(--navy-deeper); }
#robot .section-title { color: var(--white); }
#robot .section-desc  { color: rgba(255,255,255,0.6); }

.robot-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; margin-top: 60px; }
.robot-card {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(215,176,106,0.1);
  border-radius: 24px;
  overflow: hidden;
  transition: var(--transition);
}
.robot-card:hover { border-color: rgba(215,176,106,0.35); transform: translateY(-6px); box-shadow: 0 20px 56px rgba(215,176,106,0.15); }
.robot-card-visual {
  height: 240px;
  display: flex; align-items: center; justify-content: center;
  position: relative; overflow: hidden;
}
.robot-card-visual.amr-bg   { background: linear-gradient(135deg, #0a1a35, #1E345C); }
.robot-card-visual.green-bg { background: linear-gradient(135deg, #0a1f2e, #0f2e1e); }

/* AMR */
.amr-body { width: 80px; height: 60px; background: rgba(215,176,106,0.15); border: 2px solid rgba(215,176,106,0.4); border-radius: 8px; margin: 0 auto 4px; display: flex; align-items: center; justify-content: center; font-family: 'Inter', monospace; font-size: 10px; font-weight: 700; color: var(--gold); }
.amr-wheels { display: flex; justify-content: space-between; width: 80px; margin: 0 auto; }
.amr-wheel  { width: 18px; height: 10px; background: rgba(255,255,255,0.3); border-radius: 3px; }
.amr-sensor { width: 24px; height: 8px; background: rgba(215,176,106,0.6); border-radius: 4px; margin: 4px auto 0; }
.amr-path   { position: absolute; bottom: 20px; left: 0; right: 0; height: 2px; background: linear-gradient(90deg, transparent, rgba(215,176,106,0.5), transparent); }
.amr-scan-ring { position: absolute; width: 100px; height: 100px; border-radius: 50%; border: 1px solid rgba(215,176,106,0.2); top: 50%; left: 50%; transform: translate(-50%, -50%); animation: scan-expand 2s ease-out infinite; }
@keyframes scan-expand { 0% { opacity: 0.6; transform: translate(-50%, -50%) scale(0.5); } 100% { opacity: 0; transform: translate(-50%, -50%) scale(1.5); } }

/* Green Bot */
.green-leaf      { font-size: 32px; margin-bottom: 8px; }
.green-bot-body  { width: 60px; height: 80px; background: rgba(0,180,100,0.15); border: 2px solid rgba(0,200,120,0.4); border-radius: 12px 12px 8px 8px; margin: 0 auto; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 6px; }
.green-dot  { width: 8px; height: 8px; border-radius: 50%; background: rgba(0,220,130,0.8); box-shadow: 0 0 8px rgba(0,220,130,0.5); }
.green-panel { width: 36px; height: 3px; background: rgba(0,220,130,0.4); border-radius: 2px; }

.robot-card-body  { padding: 28px; }
.robot-card-badge { display: inline-block; font-size: 11px; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--gold); background: rgba(215,176,106,0.1); border: 1px solid rgba(215,176,106,0.2); padding: 4px 12px; border-radius: 50px; margin-bottom: 12px; }
.robot-card-title { font-size: 22px; font-weight: 800; color: var(--white); margin-bottom: 10px; }
.robot-card-desc  { font-size: 13px; color: rgba(255,255,255,0.55); line-height: 1.7; margin-bottom: 20px; }
.robot-specs      { display: flex; gap: 8px; flex-wrap: wrap; }
.robot-spec       { font-size: 11px; color: rgba(215,176,106,0.8); background: rgba(215,176,106,0.06); border: 1px solid rgba(215,176,106,0.15); padding: 4px 10px; border-radius: 6px; }

/* ================================================
   PARTNERS
================================================ */
#partners { padding: 80px 0; background: var(--white); overflow: hidden; }
.partners-track-wrap {
  position: relative;
  margin-top: 48px;
}
.partners-track-wrap::before,
.partners-track-wrap::after {
  content: ''; position: absolute; top: 0; bottom: 0; width: 100px; z-index: 2;
}
.partners-track-wrap::before { left:  0; background: linear-gradient(90deg,  white, transparent); }
.partners-track-wrap::after  { right: 0; background: linear-gradient(-90deg, white, transparent); }
.partners-track {
  display: flex; gap: 32px;
  animation: slide-partners 25s linear infinite;
  width: max-content;
}
.partners-track:hover { animation-play-state: paused; }
@keyframes slide-partners { 0% { transform: translateX(0); } 100% { transform: translateX(-50%); } }
.partner-logo {
  width: 140px; height: 60px;
  background: var(--gray-100);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 12px; font-weight: 700; color: var(--gray-400);
  flex-shrink: 0;
  transition: var(--transition);
  border: 1px solid var(--gray-200);
}
.partner-logo:hover { background: var(--navy); color: var(--gold); border-color: var(--navy); }

/* ================================================
   NEWS
================================================ */
#news { padding: 100px 0; background: var(--gray-100); }

.news-header { display: flex; align-items: flex-end; justify-content: space-between; margin-bottom: 48px; }
.news-header .section-title { margin-bottom: 0; }
.news-more { font-size: 14px; font-weight: 600; color: var(--navy); display: flex; align-items: center; gap: 6px; transition: var(--transition); }
.news-more:hover { color: var(--gold); }

.news-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 20px; }
.news-card { background: var(--white); border-radius: 16px; overflow: hidden; box-shadow: var(--shadow-card); transition: var(--transition); }
.news-card:hover { transform: translateY(-4px); box-shadow: 0 16px 40px rgba(30,52,92,0.15); }
.news-img { height: 200px; display: flex; align-items: center; justify-content: center; position: relative; overflow: hidden; }
.news-img.img1 { background: linear-gradient(135deg, #0d2244, #1E345C); height: 220px; }
.news-img.img2 { background: linear-gradient(135deg, #1a2540, #2e3f62); }
.news-img.img3 { background: linear-gradient(135deg, #0a1e3c, #163050); }
.news-img-icon { font-size: 40px; color: rgba(215,176,106,0.4); }
.news-category { position: absolute; top: 12px; left: 12px; font-size: 10px; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; background: var(--gold); color: var(--navy-dark); padding: 3px 10px; border-radius: 50px; }
.news-body  { padding: 20px; }
.news-date  { font-size: 11px; color: var(--text-muted); margin-bottom: 8px; }
.news-title { font-size: 15px; font-weight: 700; color: var(--navy); line-height: 1.5; margin-bottom: 10px; }
.news-card:first-child .news-title { font-size: 18px; }
.news-tags  { display: flex; gap: 6px; flex-wrap: wrap; }
.news-tag   { font-size: 10px; color: var(--navy); background: var(--gray-100); padding: 3px 8px; border-radius: 4px; font-weight: 600; }

/* ================================================
   CAREERS
================================================ */
#careers {
  padding: 100px 0;
  background: var(--gradient-navy);
  position: relative; overflow: hidden; text-align: center;
}
#careers::before {
  content: ''; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(215,176,106,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(215,176,106,0.03) 1px, transparent 1px);
  background-size: 40px 40px;
}
#careers .section-label    { margin: 0 auto 12px; }
#careers .section-title    { color: var(--white); }
.careers-subtitle { font-size: clamp(14px, 1.5vw, 17px); color: rgba(255,255,255,0.6); margin: 12px auto 48px; max-width: 600px; }
.careers-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; position: relative; z-index: 1; }
.career-card {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(215,176,106,0.15);
  border-radius: 14px; padding: 24px 16px;
  transition: var(--transition); text-align: left;
}
.career-card:hover { background: rgba(215,176,106,0.1); border-color: var(--gold); transform: translateY(-4px); }
.career-card-icon  { font-size: 28px; color: var(--gold); margin-bottom: 12px; }
.career-card-title { font-size: 15px; font-weight: 700; color: var(--white); margin-bottom: 6px; }
.career-card-desc  { font-size: 12px; color: rgba(255,255,255,0.5); line-height: 1.5; }
.careers-cta { margin-top: 48px; position: relative; z-index: 1; }
.careers-cta .btn-primary { font-size: 16px; padding: 16px 40px; }

/* ================================================
   CONTACT
================================================ */
#contact { padding: 100px 0; background: var(--white); }

.contact-grid { display: grid; grid-template-columns: 1fr 1.4fr; gap: 60px; align-items: start; }
.contact-info-title { font-size: 22px; font-weight: 800; color: var(--navy); margin-bottom: 24px; }
.contact-info-list  { display: flex; flex-direction: column; gap: 20px; }
.contact-info-item  { display: flex; gap: 16px; align-items: flex-start; }
.contact-info-icon  { width: 44px; height: 44px; border-radius: 12px; background: rgba(30,52,92,0.08); display: flex; align-items: center; justify-content: center; font-size: 18px; color: var(--navy); flex-shrink: 0; }
.contact-info-item-text { flex: 1; }
.contact-info-item-label { font-size: 11px; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--gold); margin-bottom: 2px; }
.contact-info-item-value { font-size: 14px; font-weight: 600; color: var(--navy); line-height: 1.6; }
.contact-info-item-sub   { font-size: 12px; color: var(--text-muted); line-height: 1.5; }

.contact-map { margin-top: 28px; height: 180px; border-radius: 16px; background: var(--navy); display: flex; align-items: center; justify-content: center; overflow: hidden; position: relative; }
.map-grid { position: absolute; inset: 0; background-image: linear-gradient(rgba(215,176,106,0.05) 1px, transparent 1px), linear-gradient(90deg, rgba(215,176,106,0.05) 1px, transparent 1px); background-size: 30px 30px; }
.map-pin { position: relative; z-index: 1; text-align: center; color: var(--gold); }
.map-pin i { font-size: 36px; animation: pin-bounce 2s ease-in-out infinite; }
@keyframes pin-bounce { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-6px); } }
.map-pin-label { font-size: 11px; font-weight: 700; color: var(--white); margin-top: 6px; background: rgba(215,176,106,0.2); padding: 2px 8px; border-radius: 4px; }

.contact-form-wrap  { background: var(--gray-100); border-radius: 24px; padding: 40px; }
.contact-form-title { font-size: 20px; font-weight: 800; color: var(--navy); margin-bottom: 6px; }
.contact-form-sub   { font-size: 13px; color: var(--text-muted); margin-bottom: 28px; }
.form-row   { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-bottom: 14px; }
.form-group { display: flex; flex-direction: column; gap: 6px; margin-bottom: 14px; }
.form-group:last-of-type { margin-bottom: 0; }
.form-label { font-size: 12px; font-weight: 700; color: var(--navy); letter-spacing: 0.05em; }
.form-input, .form-select, .form-textarea {
  padding: 12px 16px;
  border: 1.5px solid var(--gray-200);
  border-radius: 10px;
  font-size: 14px; font-family: inherit;
  color: var(--text-dark); background: var(--white);
  transition: var(--transition); outline: none;
}
.form-input:focus, .form-select:focus, .form-textarea:focus { border-color: var(--navy); box-shadow: 0 0 0 3px rgba(30,52,92,0.08); }
.form-textarea { resize: vertical; min-height: 120px; }
.form-submit {
  width: 100%; padding: 16px;
  background: var(--gradient-navy);
  color: var(--white); font-size: 15px; font-weight: 700;
  border-radius: 12px; margin-top: 20px;
  transition: var(--transition);
  display: flex; align-items: center; justify-content: center; gap: 8px;
}
.form-submit:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(30,52,92,0.3); }

/* ================================================
   FOOTER
================================================ */
#footer {
  background: var(--navy-deeper);
  padding: 80px 0 40px;
  position: relative; overflow: hidden;
}
#footer::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, transparent 0%, var(--gold) 20%, rgba(255,255,255,0.2) 50%, var(--gold) 80%, transparent 100%);
}
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 60px; }

/* Footer Logo Image */
.footer-logo-img {
  height: 32px;
  width: auto;
  filter: brightness(0) invert(1);
  margin-bottom: 10px;
}
.footer-tagline { font-size: 11px; font-weight: 600; color: var(--gold); letter-spacing: 0.15em; text-transform: uppercase; margin-bottom: 16px; }
.footer-wave { display: flex; gap: 3px; margin-bottom: 20px; }
.footer-wave-line { height: 2px; border-radius: 2px; }
.footer-wave-line:nth-child(1) { width: 36px; background: var(--gold); }
.footer-wave-line:nth-child(2) { width: 24px; background: rgba(255,255,255,0.25); }
.footer-wave-line:nth-child(3) { width: 16px; background: var(--gold); opacity: 0.5; }
.footer-brand-desc { font-size: 13px; color: rgba(255,255,255,0.4); line-height: 1.7; margin-bottom: 24px; }
.footer-social { display: flex; gap: 10px; }
.social-btn { width: 38px; height: 38px; border-radius: 10px; background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.1); display: flex; align-items: center; justify-content: center; font-size: 15px; color: rgba(255,255,255,0.5); transition: var(--transition); }
.social-btn:hover { background: var(--gold); color: var(--navy-dark); border-color: var(--gold); }

.footer-col-title { font-size: 12px; font-weight: 800; letter-spacing: 0.12em; text-transform: uppercase; color: var(--gold); margin-bottom: 20px; }
.footer-links { display: flex; flex-direction: column; gap: 10px; }
.footer-link  { font-size: 13px; color: rgba(255,255,255,0.5); transition: color 0.2s; }
.footer-link:hover { color: var(--gold); }

.footer-divider { border: none; border-top: 1px solid rgba(255,255,255,0.06); margin-bottom: 28px; }
.footer-bottom  { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px; }
.footer-copy    { font-size: 12px; color: rgba(255,255,255,0.3); line-height: 1.6; }
.footer-copy a  { color: rgba(215,176,106,0.6); }
.footer-legal   { display: flex; gap: 20px; }
.footer-legal a { font-size: 12px; color: rgba(255,255,255,0.3); transition: color 0.2s; }
.footer-legal a:hover { color: var(--gold); }

/* ================================================
   RESPONSIVE
================================================ */
@media (max-width: 1024px) {
  .hero-biz-cards        { grid-template-columns: repeat(2, 1fr); }
  .about-grid            { grid-template-columns: 1fr; gap: 48px; }
  .automotive-grid       { grid-template-columns: 1fr; }
  .roii-hero-wrap        { grid-template-columns: 1fr; padding: 36px; }
  .addon-grid            { grid-template-columns: 1fr; }
  .si-grid               { grid-template-columns: repeat(2, 1fr); }
  .si-grid .si-card:last-child { grid-column: span 2; max-width: 400px; justify-self: center; }
  .robot-grid            { grid-template-columns: 1fr; max-width: 560px; margin-left: auto; margin-right: auto; }
  .news-grid             { grid-template-columns: 1fr 1fr; }
  .news-grid .news-card:first-child { grid-column: span 2; }
  .careers-grid          { grid-template-columns: repeat(2, 1fr); }
  .contact-grid          { grid-template-columns: 1fr; }
  .footer-grid           { grid-template-columns: 1fr 1fr; gap: 32px; }
  .dropdown-menu         { min-width: 400px; }
}

@media (max-width: 768px) {
  .nav, .header-cta { display: none; }
  .hamburger { display: flex; }
  #hero { padding-top: 60px; }
  .hero-beyond-line.line-top,
  .hero-beyond-line.line-bottom { font-size: clamp(36px, 10vw, 56px); }
  .hero-biz-cards { grid-template-columns: repeat(2, 1fr); padding: 0 16px 40px; }
  .about-vision-cards  { grid-template-columns: 1fr; }
  .about-stats { grid-template-columns: repeat(3, 1fr); }
  .roii-hero-wrap      { padding: 28px 20px; }
  .si-grid             { grid-template-columns: 1fr; }
  .si-grid .si-card:last-child { grid-column: span 1; max-width: 100%; }
  .news-grid           { grid-template-columns: 1fr; }
  .news-grid .news-card:first-child { grid-column: span 1; }
  .careers-grid        { grid-template-columns: 1fr 1fr; }
  .form-row            { grid-template-columns: 1fr; }
  .footer-grid         { grid-template-columns: 1fr; }
  .footer-bottom       { flex-direction: column; text-align: center; }
  .dropdown-menu       { display: none; }
}

@media (max-width: 480px) {
  .hero-biz-cards      { grid-template-columns: 1fr 1fr; gap: 8px; }
  .hero-biz-card-icon  { font-size: 22px; }
  .hero-biz-card-title { font-size: 12px; }
  .about-stats         { gap: 12px; }
  .stat-num            { font-size: 26px; }
  .careers-grid        { grid-template-columns: 1fr; }
  .footer-grid .footer-col:not(.footer-brand) { display: none; }
}