/* ============================================================
   BCONIX — styles.css
   toss.im inspired white/light minimal design
   ============================================================ */

/* === Root Variables === */
:root {
  --bg:        #ffffff;
  --bg-alt:    #f5f5f7;
  --bg-hero:   #f0f4ff;
  --bg-card:   #ffffff;
  --bg-card2:  #f5f5f7;
  --border:    rgba(0,0,0,0.09);
  --text:      #1d1d1f;
  --text-sub:  #6e6e73;
  --text-dim:  #afafb8;
  --accent:    #3b82f6;
  --accent-h:  #2563eb;
  --accent-2:  #8b5cf6;
  --green:     #22c55e;
  --shadow-sm: 0 2px 12px rgba(0,0,0,0.06);
  --shadow:    0 8px 40px rgba(0,0,0,0.10);
  --shadow-lg: 0 20px 60px rgba(0,0,0,0.13);
  --radius:    18px;
  --radius-sm: 12px;
  --trans:     0.3s cubic-bezier(0.4,0,0.2,1);
  --font:      'Noto Sans KR', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

/* === Reset & Base === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a  { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
input, select, textarea { font-family: inherit; }

/* === Layout === */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 32px;
}
.section { padding: 120px 0; }
.alt-section { background: var(--bg-alt); }

/* === Typography === */
h1, h2, h3, h4 { line-height: 1.2; font-weight: 800; letter-spacing: -0.02em; }

/* === Buttons === */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 100px;
  font-size: 0.95rem;
  font-weight: 600;
  transition: var(--trans);
  white-space: nowrap;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover {
  background: var(--accent-h);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(59,130,246,0.30);
}
.btn-ghost {
  background: rgba(0,0,0,0.05);
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-ghost:hover {
  background: rgba(0,0,0,0.09);
  transform: translateY(-2px);
}
.btn-full { width: 100%; justify-content: center; }

/* ===================== NAVBAR ===================== */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(0,0,0,0.06);
  transition: box-shadow var(--trans);
}
.navbar.scrolled {
  box-shadow: 0 2px 16px rgba(0,0,0,0.07);
}
.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 32px;
  height: 100px;
  display: flex;
  align-items: center;
  gap: 0;
}
/* Logo */
.nav-logo {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 2px;
  margin-right: auto;
  text-decoration: none;
  flex-shrink: 0;
}
.nav-logo img {
  height: 82px;
  width: auto;
  object-fit: contain;
  transition: opacity var(--trans);
}
.nav-logo:hover img { opacity: 0.8; }
/* Nav links */
.nav-links {
  display: flex;
  align-items: center;
  gap: 0;
  margin-right: 20px;
}
.nav-item {
  position: relative;
}
.nav-item > a {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 8px 16px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-sub);
  transition: color var(--trans);
  border-radius: 8px;
}
.nav-item > a:hover { color: var(--text); background: rgba(0,0,0,0.04); }
.nav-arrow {
  font-size: 0.65rem;
  transition: transform var(--trans);
  display: inline-block;
}
.has-dropdown:hover .nav-arrow { transform: rotate(180deg); }

/* Dropdown */
.nav-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: 0 8px 40px rgba(0,0,0,0.12);
  padding: 8px;
  min-width: 200px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s, transform 0.2s, visibility 0.2s;
  z-index: 100;
}
.has-dropdown:hover .nav-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}
.nav-dropdown a {
  display: block;
  padding: 9px 14px;
  font-size: 0.85rem;
  color: var(--text-sub);
  border-radius: 8px;
  transition: background var(--trans), color var(--trans);
}
.nav-dropdown a:hover { background: var(--bg-alt); color: var(--text); }

/* Nav CTA */
.btn-nav {
  display: inline-flex;
  align-items: center;
  padding: 9px 20px;
  background: var(--accent);
  color: #fff;
  border-radius: 100px;
  font-size: 0.875rem;
  font-weight: 600;
  transition: var(--trans);
}
.btn-nav:hover { background: var(--accent-h); transform: translateY(-1px); }

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
}
.hamburger span {
  display: block;
  width: 22px; height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: var(--trans);
}
.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ===================== HERO ===================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: 160px 32px 80px;
  background: linear-gradient(160deg, #f0f4ff 0%, #ffffff 55%, #f5f0ff 100%);
}
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(59,130,246,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(59,130,246,0.05) 1px, transparent 1px);
  background-size: 60px 60px;
}
.hero-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.25;
  pointer-events: none;
}
.glow-1 {
  width: 600px; height: 600px;
  background: radial-gradient(circle, #3b82f6, transparent);
  top: -200px; left: -100px;
}
.glow-2 {
  width: 500px; height: 500px;
  background: radial-gradient(circle, #8b5cf6, transparent);
  bottom: -100px; right: -100px;
}
.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 780px;
}
.hero-badge {
  display: inline-block;
  padding: 6px 18px;
  background: rgba(59,130,246,0.1);
  border: 1px solid rgba(59,130,246,0.25);
  border-radius: 100px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 32px;
}
.hero-title {
  font-size: clamp(2.4rem, 5.5vw, 4.8rem);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
  color: var(--text);
}
.hero-title .accent-word {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-sub {
  font-size: clamp(1rem, 2vw, 1.15rem);
  color: var(--text-sub);
  line-height: 1.8;
  margin-bottom: 48px;
}
.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}
.hero-scroll-hint {
  position: absolute;
  bottom: 40px; left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  color: var(--text-dim);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  z-index: 1;
}
.scroll-line {
  width: 1px; height: 40px;
  background: linear-gradient(to bottom, var(--text-dim), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}
@keyframes scrollPulse {
  0%, 100% { opacity: 0.3; }
  50%       { opacity: 0.9; }
}

/* ===================== SECTION HEADER ===================== */
.section-header {
  text-align: center;
  margin-bottom: 64px;
}
.section-tag {
  display: inline-block;
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 18px;
}
.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 900;
  margin-bottom: 18px;
  letter-spacing: -0.03em;
  color: var(--text);
}
.section-desc {
  font-size: 1.05rem;
  color: var(--text-sub);
  line-height: 1.8;
  max-width: 520px;
  margin: 0 auto;
}

/* ===================== SERVICES GRID ===================== */
.services-section { background: var(--bg); }
.services-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform var(--trans), box-shadow var(--trans), border-color var(--trans);
  animation-delay: var(--delay, 0s);
  box-shadow: var(--shadow-sm);
}
.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow);
  border-color: rgba(59,130,246,0.25);
}
.sc-img {
  position: relative;
  height: 160px;
  overflow: hidden;
  background: var(--bg-alt);
}
.sc-img img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease, opacity 0.4s ease;
}
.service-card:hover .sc-img img { transform: scale(1.08); }
/* SVG illustration wrapper inside .sc-img */
.sc-svg-wrap {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #f1f5f9;
}
.sc-svg-wrap svg {
  width: 100%;
  height: 100%;
}
.sc-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(255,255,255,0.7) 0%, transparent 50%);
}
.sc-body { padding: 18px 20px 20px; }
.sc-icon { font-size: 1.4rem; margin-bottom: 8px; }
.sc-body h3 {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--text);
}
.sc-body p {
  font-size: 0.8rem;
  color: var(--text-sub);
  line-height: 1.6;
  margin-bottom: 14px;
}
.sc-link {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent);
  transition: color var(--trans);
}
.sc-link:hover { color: var(--accent-h); }

/* ===================== ROBOT SECTION ===================== */
.robot-section { background: var(--bg-alt); }

/* ===================== SOLUTIONS SECTION ===================== */
.solutions-section { background: var(--bg); }

/* ===================== PARKING SECTION ===================== */
.parking-section { background: #edf3ff; }

/* ===================== LED SECTION ===================== */
.led-section { background: var(--bg-alt); }

/* ===================== ECO SECTION ===================== */
.eco-section { background: #f0fdf4; }

/* Robot categories */
.robot-category {
  margin-bottom: 72px;
}
.robot-category:last-child { margin-bottom: 0; }

.rcat-label {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  margin-bottom: 32px;
}
.rcat-num {
  font-size: 2.5rem;
  font-weight: 900;
  color: rgba(59,130,246,0.15);
  line-height: 1;
  flex-shrink: 0;
  min-width: 52px;
  letter-spacing: -0.04em;
}
.rcat-title {
  font-size: clamp(1.4rem, 2.5vw, 1.9rem);
  font-weight: 800;
  color: var(--text);
  margin-bottom: 6px;
  letter-spacing: -0.02em;
}
.rcat-desc {
  font-size: 0.95rem;
  color: var(--text-sub);
  line-height: 1.7;
}

/* Product grid (cleaning robot cards) */
.rcat-products.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
}
.rcat-products.single-col {
  display: flex;
  justify-content: center;
}

/* Product card with slideshow */
.product-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: box-shadow var(--trans), border-color var(--trans);
  box-shadow: var(--shadow-sm);
}
.product-card:hover {
  box-shadow: var(--shadow);
  border-color: rgba(59,130,246,0.2);
}
.product-img-wrap {
  height: 308px;
  background: var(--bg-alt);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 32px;
  overflow: hidden;
  position: relative;
}
.slideshow-wrap { padding: 28px; }
.product-img-wrap img {
  max-height: 100%;
  width: auto;
  max-width: 100%;
  object-fit: contain;
}
.product-card:hover .product-img-wrap img { transform: scale(1.03); }
.product-label {
  padding: 20px 24px 24px;
  text-align: center;
}
.product-brand {
  font-size: 1.4rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent);
  display: block;
  margin-bottom: 6px;
}
.product-label h4 {
  font-size: 1.0rem;
  font-weight: 700;
  color: var(--text);
}

/* Slideshow dots */
.slide-dots {
  position: absolute;
  bottom: 10px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 6px;
  z-index: 2;
}
.sdot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--text-dim);
  transition: background var(--trans), transform var(--trans);
  cursor: pointer;
}
.sdot.active {
  background: var(--accent);
  transform: scale(1.3);
}

/* Ad / Inspection robot feature card (wider single card) */
.robot-feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--trans), transform var(--trans);
  width: 100%;
  max-width: 560px;
}
.robot-feature-card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-4px);
}
.rfc-img {
  height: 320px;
  background: var(--bg-alt);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 32px;
  overflow: hidden;
}
.rfc-img.rfc-dark {
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
}
.rfc-img img {
  max-height: 100%;
  max-width: 100%;
  object-fit: contain;
  transition: transform 0.5s ease;
}
.robot-feature-card:hover .rfc-img img { transform: scale(1.04); }
.rfc-label {
  padding: 18px 24px 22px;
  text-align: center;
}
.rsc-tag {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  display: block;
  margin-bottom: 6px;
}
.rfc-label h3 {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--text);
}

/* ===================== SPLIT BLOCK ===================== */
.split-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.split-block.reverse { direction: rtl; }
.split-block.reverse > * { direction: ltr; }
.split-title {
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 900;
  margin-bottom: 18px;
  margin-top: 14px;
  letter-spacing: -0.03em;
  color: var(--text);
}
.split-desc {
  font-size: 1rem;
  color: var(--text-sub);
  line-height: 1.8;
}
.split-visual { position: relative; }
.visual-card {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}
.visual-card img { width: 100%; object-fit: cover; display: block; }
.visual-card-sm {
  position: absolute;
  bottom: -28px; right: -28px;
  width: 180px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  box-shadow: var(--shadow);
  border: 3px solid var(--bg);
}
.visual-card-sm img { width: 100%; object-fit: cover; }

/* ===================== PARKING / GATE ===================== */
.two-feature-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}
.two-feature-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--trans);
}
.two-feature-item:hover { box-shadow: var(--shadow); }
.tfi-imgs { padding: 20px 20px 0; }
.tfi-main {
  border-radius: var(--radius-sm);
  overflow: hidden;
  height: 220px;
}
.tfi-main img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}
.gate-svg-main {
  height: 220px;
  background: #f1f5f9;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.gate-svg-main svg {
  width: 100%;
  height: 100%;
}
.two-feature-item:hover .tfi-main img { transform: scale(1.04); }
.tfi-sub-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-top: 8px;
}
.tfi-sub-row img {
  width: 100%; height: 100px;
  object-fit: cover;
  border-radius: 8px;
}
/* SVG sub-cards */
.tfi-sub-svg {
  width: 100%;
  height: 100px;
  border-radius: 8px;
  overflow: hidden;
  background: #f8fafc;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
}
.tfi-sub-svg svg {
  width: 100%;
  height: 100%;
}
.tfi-info { padding: 22px 24px 26px; }
.tfi-tag {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  display: block;
  margin-bottom: 8px;
}
.tfi-info h3 {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text);
}

/* ===================== LED Visual ===================== */
.led-visual { position: relative; }
.led-img-main {
  width: 100%;
  border-radius: var(--radius);
  object-fit: cover;
  height: 340px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}
.led-img-sub {
  position: absolute;
  bottom: -24px; left: -24px;
  width: 180px; height: 150px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow);
  border: 3px solid var(--bg-alt);
}

/* ===================== ECO Visual ===================== */
.eco-visual { position: relative; }
.eco-img-main {
  width: 100%;
  border-radius: var(--radius);
  object-fit: cover;
  height: 340px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}
.eco-img-sub {
  position: absolute;
  bottom: -24px; right: -24px;
  width: 180px; height: 150px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow);
  border: 3px solid var(--bg);
}
/* Eco SVG illustration */
.eco-svg-main {
  width: 100%;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}
.eco-svg-main svg {
  width: 100%;
  height: auto;
  display: block;
}

/* ===================== CONSULTING & TRADE ===================== */
.ct-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
}
.ct-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--trans), transform var(--trans);
}
.ct-card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-4px);
}
.ct-img { height: 220px; overflow: hidden; }
.ct-img img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}
.ct-card:hover .ct-img img { transform: scale(1.05); }
.ct-body { padding: 24px 28px 28px; }
.ct-body h3 {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 10px;
}
.ct-body p {
  font-size: 0.88rem;
  color: var(--text-sub);
  line-height: 1.7;
}

/* ===================== CONTACT (Info Only) ===================== */
.contact-section { background: var(--bg-alt); }
.contact-simple {
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}
.contact-simple-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 900;
  margin-top: 14px;
  margin-bottom: 18px;
  letter-spacing: -0.03em;
  color: var(--text);
}
.contact-simple-desc {
  font-size: 1rem;
  color: var(--text-sub);
  line-height: 1.8;
  margin-bottom: 56px;
}
.contact-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.contact-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 24px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--trans), transform var(--trans);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}
.contact-card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-4px);
}
.cc-icon {
  font-size: 2rem;
  margin-bottom: 4px;
}
.cc-label {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
}
.cc-value {
  font-size: 0.9rem;
  color: var(--text-sub);
  line-height: 1.6;
  text-align: center;
}
a.cc-value:hover { color: var(--accent); }
p.cc-value { margin: 0; }

/* ===================== FOOTER ===================== */
.footer {
  background: var(--text);
  color: rgba(255,255,255,0.8);
  padding: 64px 0 32px;
}
.footer-top {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 80px;
  margin-bottom: 48px;
}
.footer-brand .footer-logo {
  height: 52px;
  object-fit: contain;
  margin-bottom: 16px;
  background: rgba(255,255,255,0.92);
  border-radius: 10px;
  padding: 6px 14px;
}
.footer-brand p {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.45);
  line-height: 1.7;
}
.footer-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}
.fl-col { display: flex; flex-direction: column; gap: 10px; }
.fl-col strong {
  font-size: 0.78rem;
  font-weight: 700;
  color: rgba(255,255,255,0.9);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 4px;
}
.fl-col a {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.45);
  transition: color var(--trans);
}
.fl-col a:hover { color: rgba(255,255,255,0.9); }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,0.08);
  font-size: 0.8rem;
  color: rgba(255,255,255,0.35);
}

/* ===================== FADE-UP ANIMATIONS ===================== */
.fade-up {
  opacity: 0;
  transform: translateY(36px);
  transition: opacity 0.7s ease, transform 0.7s ease;
  transition-delay: var(--delay, 0s);
}
.fade-up.visible { opacity: 1; transform: translateY(0); }

/* ===================== TOAST ===================== */
.toast {
  position: fixed;
  bottom: 32px; left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--text);
  color: #fff;
  padding: 14px 28px;
  border-radius: 100px;
  font-size: 0.9rem;
  font-weight: 500;
  box-shadow: 0 8px 32px rgba(0,0,0,0.2);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s, transform 0.3s;
  z-index: 9999;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ===================== ABOUT SECTION ===================== */
.about-section {
  background: var(--bg);
  padding: 120px 0;
}
.about-headline {
  font-size: clamp(2.2rem, 4.5vw, 3.6rem);
  font-weight: 900;
  letter-spacing: -0.03em;
  color: var(--text);
  margin-top: 14px;
  margin-bottom: 24px;
  line-height: 1.15;
}
.about-lead {
  font-size: 1.05rem;
  color: var(--text-sub);
  line-height: 1.9;
  max-width: 680px;
  margin-bottom: 64px;
}
.about-values {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.value-card {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px 32px;
  transition: transform var(--trans), box-shadow var(--trans), border-color var(--trans);
}
.value-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow);
  border-color: rgba(59,130,246,0.25);
}
.value-icon {
  width: 48px; height: 48px;
  border-radius: 14px;
  background: rgba(59,130,246,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 18px;
}
.value-card h4 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 10px;
}
.value-card p {
  font-size: 0.85rem;
  color: var(--text-sub);
  line-height: 1.7;
}

/* (robot-placeholder removed — now using actual images) */

/* ===================== RESPONSIVE ===================== */
@media (max-width: 1024px) {
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .rcat-products.two-col { grid-template-columns: 1fr; }
  .split-block { grid-template-columns: 1fr; gap: 48px; }
  .split-block.reverse { direction: ltr; }
  .split-block.reverse .split-visual { order: -1; }
  .two-feature-row { grid-template-columns: 1fr; }
  .ct-grid { grid-template-columns: 1fr; }
  .contact-cards { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr; gap: 40px; }
  .visual-card-sm, .led-img-sub, .eco-img-sub { display: none; }
  .robot-feature-card { max-width: 100%; }
}
@media (max-width: 768px) {
  .section { padding: 80px 0; }
  .container { padding: 0 20px; }
  .nav-inner { padding: 0 20px; height: 90px; }
  .about-values { grid-template-columns: repeat(2, 1fr); }
  .nav-links {
    display: none;
    position: fixed;
    top: 100px; left: 0; right: 0;
    background: rgba(255,255,255,0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 16px;
    gap: 4px;
    border-bottom: 1px solid var(--border);
    box-shadow: 0 8px 32px rgba(0,0,0,0.1);
  }
  .nav-links.open { display: flex; }
  .nav-item > a {
    font-size: 1rem;
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
    color: var(--text);
    border-radius: 0;
  }
  .nav-dropdown {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    border: none;
    border-radius: 0;
    padding: 4px 0 4px 16px;
  }
  .nav-dropdown a { padding: 8px 12px; font-size: 0.9rem; }
  .btn-nav { display: none; }
  .hamburger { display: flex; margin-left: auto; }
  .services-grid { grid-template-columns: 1fr 1fr; gap: 14px; }
  .footer-links { grid-template-columns: 1fr 1fr; }
  .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
  .contact-cards { grid-template-columns: 1fr; gap: 16px; }
  .rcat-label { flex-direction: column; gap: 8px; }
  .rcat-num { font-size: 2rem; }
}
@media (max-width: 480px) {
  .services-grid { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; align-items: center; }
  .footer-links { grid-template-columns: 1fr; }
  .contact-cards { grid-template-columns: 1fr; }
}