/* ============================================================
   Aotingbot SW55A — Product Detail Page Styles
   bconix design language (standalone, self-contained)
   ============================================================ */

/* === Root Variables === */
:root {
  --bg:        #ffffff;
  --bg-alt:    #f5f5f7;
  --bg-card:   #ffffff;
  --border:    rgba(0,0,0,0.08);
  --text:      #1d1d1f;
  --text-sub:  #6e6e73;
  --text-dim:  #afafb8;
  --accent:    #3b82f6;
  --accent-h:  #2563eb;
  --accent-2:  #8b5cf6;
  --teal:      #06b6d4;
  --teal-h:    #0891b2;
  --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(0,0,0,0.14);
  --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;
  /* Hero dark palette */
  --hero-bg:   #0a0e1a;
  --hero-card: rgba(255,255,255,0.06);
  --hero-border: rgba(255,255,255,0.12);
}

/* === 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, ol { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

/* === Layout === */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 32px;
}
.section { padding: 112px 0; }

/* === Typography === */
h1, h2, h3, h4 { line-height: 1.18; 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(59,130,246,0.32);
}
.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); }

/* Video button */
.btn-video {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 28px;
  border-radius: 100px;
  background: rgba(255,255,255,0.10);
  border: 1.5px solid rgba(255,255,255,0.20);
  color: #fff;
  font-size: 0.95rem;
  font-weight: 600;
  transition: var(--trans);
  backdrop-filter: blur(8px);
}
.btn-video:hover {
  background: rgba(255,255,255,0.18);
  border-color: rgba(255,255,255,0.35);
  transform: translateY(-2px);
}
.play-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px; height: 28px;
  border-radius: 50%;
  background: var(--teal);
  font-size: 0.7rem;
  color: #fff;
  flex-shrink: 0;
  transition: var(--trans);
}
.btn-video:hover .play-icon {
  background: var(--teal-h);
  transform: scale(1.1);
}

/* ============================================================
   NAVBAR — always white (메인페이지와 동일)
   ============================================================ */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.92);
  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: 84px;
  display: flex;
  align-items: center;
  gap: 0;
}
.nav-logo {
  display: flex;
  align-items: center;
  margin-right: auto;
  flex-shrink: 0;
}
.nav-logo img {
  height: 72px;
  width: auto;
  object-fit: contain;
  transition: opacity var(--trans);
}
.nav-logo:hover img { opacity: 0.8; }
.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-right: 20px;
}
.nav-links a {
  padding: 8px 14px;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-sub);
  border-radius: 8px;
  transition: color var(--trans), background var(--trans);
}
.nav-links a:hover,
.nav-links a.nav-active {
  color: var(--text);
  background: rgba(0,0,0,0.04);
}
/* Nav item + dropdown */
.nav-item { position: relative; }
.nav-arrow { font-size: 0.65rem; opacity: 0.6; margin-left: 2px; }
.nav-dropdown {
  display: none;
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  min-width: 200px;
  background: rgba(255,255,255,0.98);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.10);
  padding: 8px;
  z-index: 200;
  flex-direction: column;
  gap: 2px;
}
.nav-dropdown a {
  display: block;
  padding: 8px 12px;
  white-space: nowrap;
  border-radius: 8px;
}
.has-dropdown:hover .nav-dropdown { display: flex; }
/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  margin-left: 12px;
}
.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 — LIGHT PRODUCT HERO (메인페이지 스타일)
   ============================================================ */
.hero-product {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: linear-gradient(160deg, #f0f4ff 0%, #ffffff 55%, #f5f0ff 100%);
  overflow: hidden;
  padding: 100px 0 40px;
}
.hero-bg-dark {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero-grid-dark {
  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;
}
.hglow {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.22;
  pointer-events: none;
}
.hglow-teal {
  width: 600px; height: 600px;
  background: radial-gradient(circle, #3b82f6, transparent);
  top: -200px; left: -100px;
}
.hglow-blue {
  width: 500px; height: 500px;
  background: radial-gradient(circle, #8b5cf6, transparent);
  bottom: -100px; right: -100px;
}
.hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  padding-top: 20px;
  padding-bottom: 60px;
}
/* Breadcrumb */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  color: var(--text-dim);
  margin-bottom: 20px;
}
.breadcrumb a { color: var(--text-dim); transition: color var(--trans); }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb span:last-child { color: var(--text-sub); }
/* Hero badge */
.hero-badge-dark {
  display: inline-block;
  padding: 5px 16px;
  background: rgba(59,130,246,0.10);
  border: 1px solid rgba(59,130,246,0.25);
  border-radius: 100px;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.04em;
  margin-bottom: 24px;
}
/* Hero title */
.hero-title-product {
  font-size: clamp(3rem, 5.5vw, 5rem);
  font-weight: 900;
  color: var(--text);
  line-height: 1.08;
  letter-spacing: -0.04em;
  margin-bottom: 20px;
}
.accent-teal {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-2) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
/* Hero sub */
.hero-sub-product {
  font-size: 1.0rem;
  color: var(--text-sub);
  line-height: 1.85;
  margin-bottom: 36px;
}
/* Hero CTA */
.hero-cta {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}
/* Video button — light version */
.btn-video {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 28px;
  border-radius: 100px;
  background: rgba(0,0,0,0.05);
  border: 1.5px solid rgba(0,0,0,0.10);
  color: var(--text);
  font-size: 0.95rem;
  font-weight: 600;
  transition: var(--trans);
}
.btn-video:hover {
  background: rgba(0,0,0,0.09);
  border-color: rgba(0,0,0,0.18);
  transform: translateY(-2px);
}
.play-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px; height: 28px;
  border-radius: 50%;
  background: var(--accent);
  font-size: 0.7rem;
  color: #fff;
  flex-shrink: 0;
  transition: var(--trans);
}
.btn-video:hover .play-icon { background: var(--accent-h); transform: scale(1.1); }
/* Hero Stats */
.hero-stats {
  display: flex;
  align-items: center;
  gap: 0;
  flex-wrap: wrap;
  background: rgba(255,255,255,0.80);
  border: 1px solid rgba(0,0,0,0.08);
  border-radius: 16px;
  padding: 18px 24px;
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-sm);
}
/* 2×2 stats grid variant */
.hero-stats-2x2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  padding: 6px 8px;
}
.hero-stats-2x2 .stat-item {
  padding: 7px 10px;
  border: none;
  align-items: flex-start;
}
.hero-stats-2x2 .stat-value {
  font-size: 1.0rem;
}
.hero-stats-2x2 .stat-value small {
  font-size: 0.6rem;
}
.hero-stats-2x2 .stat-label {
  font-size: 0.62rem;
  margin-top: 2px;
}
.hero-stats-2x2 .stat-item:nth-child(1),
.hero-stats-2x2 .stat-item:nth-child(2) {
  border-bottom: 1px solid var(--border);
}
.hero-stats-2x2 .stat-item:nth-child(odd) {
  border-right: 1px solid var(--border);
}
.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 0 20px;
}
.stat-value {
  font-size: 1.65rem;
  font-weight: 800;
  color: var(--text);
  line-height: 1.1;
  letter-spacing: -0.03em;
}
.stat-value small {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.03em;
  margin-left: 2px;
}
.stat-label {
  font-size: 0.72rem;
  color: var(--text-dim);
  font-weight: 500;
  margin-top: 3px;
  text-align: center;
}
.stat-divider {
  width: 1px;
  height: 36px;
  background: var(--border);
  flex-shrink: 0;
}
/* Hero visual / slideshow */
.hero-visual {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}
.product-hero-wrap {
  position: relative;
  width: 100%;
  max-width: 660px;
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}
.hero-glow-ring {
  position: absolute;
  inset: 10%;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(59,130,246,0.12) 0%, transparent 70%);
  filter: blur(30px);
  pointer-events: none;
  animation: ringPulse 4s ease-in-out infinite;
}
@keyframes ringPulse {
  0%, 100% { opacity: 0.5; transform: scale(1); }
  50%       { opacity: 1;   transform: scale(1.05); }
}
.product-hero-img {
  position: relative;
  z-index: 1;
  width: 126.5%;
  height: auto;
  object-fit: contain;
  filter: drop-shadow(0 24px 48px rgba(59,130,246,0.15));
  transition: opacity 0.4s ease;
}
/* Dots */
.hero-dots { display: flex; gap: 8px; }
.slide-dots { display: flex; gap: 7px; }
.sdot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: rgba(0,0,0,0.18);
  transition: background var(--trans), transform var(--trans);
  cursor: pointer;
}
.sdot.active {
  background: var(--accent);
  transform: scale(1.35);
}

/* ============================================================
   SECTION HEADERS (common)
   ============================================================ */
.section-header {
  text-align: center;
  margin-bottom: 32px;
}
.section-tag {
  display: inline-block;
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 14px;
}
.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 900;
  color: var(--text);
  margin-bottom: 16px;
  letter-spacing: -0.03em;
}
.section-desc {
  font-size: 1.0rem;
  color: var(--text-sub);
  line-height: 1.8;
  max-width: 520px;
  margin: 0 auto;
}

/* ============================================================
   BENEFITS SECTION
   ============================================================ */
.benefits-section {
  background: var(--bg-alt);
  padding: 50px 0;
}
.benefits-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.benefit-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 24px 36px;
  transition: transform var(--trans), box-shadow var(--trans), border-color var(--trans);
  box-shadow: var(--shadow-sm);
}
.benefit-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow);
  border-color: rgba(6,182,212,0.22);
}
.benefit-icon {
  width: 52px; height: 52px;
  margin-bottom: 20px;
}
.benefit-icon svg { width: 100%; height: 100%; }
.benefit-card h3 {
  font-size: 1.0rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 10px;
}
.benefit-card p {
  font-size: 0.85rem;
  color: var(--text-sub);
  line-height: 1.75;
}

/* ============================================================
   CLEANING TECH SECTION (09.jpg bottom view)
   ============================================================ */
.cleaning-tech-section {
  background: var(--bg-alt);
  padding: 56px 0;
}
.cleaning-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 56px;
}
.cleaning-img-wrap {
  width: 100%;
  max-width: 860px;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}
.cleaning-bottom-img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}
.cleaning-steps-row {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  gap: 0;
  width: 100%;
  max-width: 860px;
  align-items: start;
}
.cs-item {
  text-align: center;
  padding: 0 24px;
}
.cs-num-wrap {
  display: flex;
  justify-content: center;
  margin-bottom: 14px;
}
.cs-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--teal);
  color: #fff;
  font-size: 1.0rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}
.cs-item h4 {
  font-size: 1.0rem;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 8px;
}
.cs-item p {
  font-size: 0.85rem;
  color: var(--text-sub);
  line-height: 1.75;
}
.cs-divider {
  width: 1px;
  background: var(--border);
  align-self: stretch;
  margin-top: 22px;
}

/* ============================================================
   CORE POINTS SECTION
   ============================================================ */
.core-section {
  background: var(--bg);
  padding: 56px 0;
}
.core-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.core-grid-6 {
  grid-template-columns: repeat(3, 1fr);
}
.core-video-wrap {
  margin-top: 40px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
}
.core-video {
  width: 100%;
  display: block;
  max-height: 480px;
  object-fit: cover;
}
.core-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform var(--trans), box-shadow var(--trans), border-color var(--trans);
}
.core-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow);
  border-color: rgba(6,182,212,0.22);
}
.core-img-wrap {
  height: 240px;
  overflow: hidden;
}
.core-img-wrap img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}
.core-card:hover .core-img-wrap img { transform: scale(1.06); }
.core-body {
  padding: 24px 24px 28px;
}
.core-tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 10px;
}
.core-body h3 {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 10px;
}
.core-body p {
  font-size: 0.85rem;
  color: var(--text-sub);
  line-height: 1.75;
}

/* ============================================================
   CORE POINTS — ZIGZAG LAYOUT
   ============================================================ */
.core-zigzag {
  display: flex;
  flex-direction: column;
  gap: 72px;
  margin-top: 48px;
}
.core-zitem {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
/* Even items: image on right, text on left */
.core-zitem:nth-child(even) .core-zimg { order: 2; }
.core-zitem:nth-child(even) .core-ztext { order: 1; }
.core-zimg {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
}
.core-zimg img {
  width: 100%; height: 360px;
  object-fit: cover;
  display: block;
  transition: transform 0.6s ease;
}
.core-zitem:hover .core-zimg img { transform: scale(1.04); }
.core-zvideo {
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
}
.core-zvideo video {
  width: 100%; height: 360px;
  object-fit: cover;
  display: block;
  cursor: pointer;
}
.core-video-play-btn {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  cursor: pointer;
  z-index: 3;
  transition: opacity 0.2s;
}
.core-video-play-btn:hover svg circle { fill: rgba(0,0,0,0.50); }
.core-video-play-btn svg { width: 72px; height: 72px; }
.core-video-play-btn.hidden { display: none; }
.core-ztext { padding: 8px 0; }
.core-znum {
  display: block;
  font-size: 3rem;
  font-weight: 900;
  color: rgba(59,130,246,0.10);
  line-height: 1;
  margin-bottom: 8px;
  letter-spacing: -0.04em;
}
.core-ztext .core-tag {
  display: inline-block;
  font-size: 1.12rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 12px;
}
.core-ztext h3 {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 16px;
  line-height: 1.3;
}
.core-ztext p {
  font-size: 0.95rem;
  color: var(--text-sub);
  line-height: 1.8;
}

/* ============================================================
   APPLICATION SPACES — BANNER FORMAT
   ============================================================ */
.spaces-banner { display: flex; flex-direction: column; gap: 12px; margin-top: 8px; }
.space-banner-row {
  display: flex;
  gap: 12px;
  height: 280px;
}
.space-banner-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  flex-shrink: 0;
}
.space-banner-lg { flex: 2; }
.space-banner-sm { flex: 1; }
.space-banner-card img {
  width: 100%; height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.6s ease;
}
.space-banner-card:hover img { transform: scale(1.06); }
.space-banner-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.60) 0%, rgba(0,0,0,0.10) 55%, transparent 100%);
  display: flex;
  align-items: flex-end;
  padding: 24px;
  gap: 14px;
}
.space-banner-icon {
  font-size: 1.6rem;
  line-height: 1;
  flex-shrink: 0;
}
.space-banner-overlay h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 2px;
}
.space-banner-overlay p {
  font-size: 0.78rem;
  color: rgba(255,255,255,0.75);
  line-height: 1.4;
}

/* ============================================================
   PRODUCT ADVANTAGES SECTION
   ============================================================ */
.adv-section {
  background: var(--bg-alt);
  padding: 56px 0;
}
.adv-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.adv-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 28px 24px 32px;
  box-shadow: var(--shadow-sm);
  transition: transform var(--trans), box-shadow var(--trans), border-color var(--trans);
}
.adv-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: rgba(59,130,246,0.20);
}
.adv-icon {
  width: 40px; height: 40px;
  margin-bottom: 16px;
}
.adv-icon svg { width: 100%; height: 100%; }
.adv-card h4 {
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 8px;
}
.adv-card p {
  font-size: 0.83rem;
  color: var(--text-sub);
  line-height: 1.75;
}

/* ============================================================
   FEATURES LIGHT (EDGE + MODES) — replaces features-dark
   ============================================================ */
.features-light {
  background: var(--bg);
  padding: 50px 0;
}
/* Feature split */
.feature-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  align-items: center;
  margin-bottom: 0;
}
/* Edge image card */
.edge-img-card {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}
.edge-clean-img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: contain;
}
/* Feature text (light) */
.feature-tag-accent {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 14px;
}
.feature-title-dark {
  font-size: clamp(2rem, 3.5vw, 2.8rem);
  font-weight: 900;
  color: var(--text);
  letter-spacing: -0.03em;
  margin-bottom: 20px;
  line-height: 1.12;
}
.feature-desc-dark {
  font-size: 0.95rem;
  color: var(--text-sub);
  line-height: 1.85;
  margin-bottom: 24px;
}
.feature-list-dark {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.feature-list-dark li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--text-sub);
}
.check-accent {
  color: var(--teal);
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 2px;
}
/* Section divider inside light section */
.section-divider-light {
  height: 1px;
  background: var(--border);
  margin: 36px 0;
}
/* Mode cards (light) */
.mode-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.mode-card-light {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform var(--trans), box-shadow var(--trans), border-color var(--trans);
}
.mode-card-light:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: rgba(6,182,212,0.25);
}
.mode-img-wrap {
  height: 260px;
  overflow: hidden;
  background: var(--bg-alt);
  display: flex;
  align-items: center;
  justify-content: center;
}
.mode-img-wrap img {
  width: 100%; height: 100%;
  object-fit: contain;
  transition: transform 0.6s ease;
}
.mode-card-light:hover .mode-img-wrap img { transform: scale(1.05); }
.mode-card-body {
  padding: 24px 28px 32px;
}
.mode-badge {
  display: inline-block;
  padding: 4px 14px;
  border-radius: 100px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  margin-bottom: 12px;
}
.mode-badge-auto {
  background: rgba(6,182,212,0.12);
  color: var(--teal);
  border: 1px solid rgba(6,182,212,0.25);
}
.mode-badge-manual {
  background: rgba(59,130,246,0.10);
  color: var(--accent);
  border: 1px solid rgba(59,130,246,0.22);
}
.mode-card-light h3 {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 18px;
}
.mode-steps-light {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 18px;
}
.mode-steps-light li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.875rem;
  color: var(--text-sub);
}
.mode-step-num-light {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px; height: 22px;
  border-radius: 50%;
  background: rgba(6,182,212,0.12);
  color: var(--teal);
  font-size: 0.65rem;
  font-weight: 700;
  flex-shrink: 0;
}
.mode-note-light {
  font-size: 0.78rem;
  color: var(--text-dim);
  padding-top: 14px;
  border-top: 1px solid var(--border);
}

/* ============================================================
   EASY MAINTENANCE
   ============================================================ */
.maintenance-section {
  background: var(--bg-alt);
  padding: 56px 0;
}
.maintenance-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 64px;
}
.maint-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform var(--trans), box-shadow var(--trans);
  display: flex;
  flex-direction: column;
}
.maint-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow);
}
.maint-visual {
  height: 230px;
  background: var(--bg-alt);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: 20px;
}
.maint-img {
  max-height: 100%;
  width: auto;
  object-fit: contain;
  transition: transform 0.5s ease;
}
.maint-card:hover .maint-img { transform: scale(1.04); }
.maint-visual-svg svg { width: 100%; height: auto; }
.maint-body {
  padding: 22px 24px 28px;
  flex: 1;
}
.maint-num {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--teal);
  display: block;
  margin-bottom: 8px;
}
.maint-body h3 {
  font-size: 1.0rem;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 10px;
}
.maint-body p {
  font-size: 0.85rem;
  color: var(--text-sub);
  line-height: 1.75;
}
/* Comparison table */
.compare-wrap {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px;
  box-shadow: var(--shadow-sm);
}
.compare-title {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 24px;
  text-align: center;
}
.compare-table {
  width: 100%;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--border);
}
.ct-row {
  display: grid;
  grid-template-columns: 1fr 1.5fr 1.5fr;
}
.ct-row:not(:last-child) { border-bottom: 1px solid var(--border); }
.ct-cell {
  padding: 14px 18px;
  font-size: 0.88rem;
  color: var(--text-sub);
}
.ct-label { font-weight: 600; color: var(--text); }
.ct-hybrid { background: rgba(0,0,0,0.015); }
.ct-sw55a { background: rgba(6,182,212,0.04); }
.ct-good {
  font-weight: 700;
  color: var(--teal);
}
.ct-head { background: var(--bg-alt); }
.ct-head .ct-cell {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-sub);
}
.ct-head .ct-hybrid { color: var(--text); }
.ct-head .ct-sw55a  { color: var(--teal); }
.compare-note {
  text-align: center;
  font-size: 0.75rem;
  color: var(--text-dim);
  margin-top: 16px;
}

/* ============================================================
   VIDEO FEATURE SECTION
   ============================================================ */
.video-feature-section {
  background: var(--bg);
  padding: 50px 0;
}
.video-player-wrap {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}
.product-video {
  width: 100%;
  display: block;
  background: #000;
}

/* ============================================================
   APPLICABLE MATERIALS TICKER
   ============================================================ */
.materials-section {
  background: var(--bg);
  padding: 56px 0 0;
}
.materials-ticker-outer {
  overflow: hidden;
  margin-top: 40px;
  padding: 24px 0;
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.materials-ticker-track {
  display: inline-flex;
  align-items: center;
  gap: 16px;
  animation: mat-ticker 22s linear infinite;
  padding: 0 8px;
}
.materials-ticker-outer:hover .materials-ticker-track {
  animation-play-state: paused;
}
.mat-card {
  position: relative;
  width: 240px;
  height: 160px;
  border-radius: 12px;
  overflow: hidden;
  flex-shrink: 0;
  box-shadow: var(--shadow-sm);
}
.mat-card img {
  width: 100%; height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.5s ease;
}
.mat-card:hover img { transform: scale(1.06); }
.mat-card-label {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.72) 0%, transparent 100%);
  padding: 22px 14px 12px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.mat-card-en {
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: rgba(255,255,255,0.70);
}
.mat-card-kr {
  font-size: 0.95rem;
  font-weight: 800;
  color: #fff;
}
@keyframes mat-ticker {
  0%   { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* ============================================================
   APPLICATION SPACES
   ============================================================ */
.spaces-section {
  background: var(--bg-alt);
  padding: 56px 0;
}
.spaces-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.space-card {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 4/3;
  box-shadow: var(--shadow-sm);
  cursor: default;
  transition: transform var(--trans), box-shadow var(--trans);
}
.space-card:hover { transform: translateY(-4px) scale(1.01); box-shadow: var(--shadow-lg); }
.space-card img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}
.space-card:hover img { transform: scale(1.08); }
.space-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(10,14,26,0.72) 0%, transparent 55%);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-end;
  padding: 22px;
  gap: 4px;
}
.space-icon {
  font-size: 1.5rem;
  filter: drop-shadow(0 2px 4px rgba(0,0,0,0.4));
}
.space-overlay h3 {
  font-size: 1.0rem;
  font-weight: 700;
  color: #fff;
  text-shadow: 0 2px 8px rgba(0,0,0,0.5);
}

/* ============================================================
   TECHNICAL SPECS
   ============================================================ */
.specs-section {
  background: var(--bg);
  padding: 56px 0;
}
.specs-layout {
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 56px;
  align-items: start;
}
.specs-img-col {
  position: sticky;
  top: 110px;
}
.spec-product-img {
  width: 152%;
  height: auto;
  object-fit: contain;
  border-radius: var(--radius);
  background: var(--bg-card);
  padding: 32px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  margin-bottom: 20px;
}
.spec-accessories {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 20px 22px;
}
.spec-accessories h4 {
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 12px;
}
.spec-accessories li {
  font-size: 0.85rem;
  color: var(--text-sub);
  padding: 6px 0;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 8px;
}
.spec-accessories li::before {
  content: '';
  display: inline-block;
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--teal);
  flex-shrink: 0;
}
.spec-accessories li:last-child { border-bottom: none; }
/* Spec table */
.spec-table {
  width: 100%;
  border-collapse: collapse;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg-card);
  box-shadow: var(--shadow-sm);
}
.spec-table td {
  padding: 14px 20px;
  font-size: 0.88rem;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}
.spec-table tr:last-child td { border-bottom: none; }
.spec-table td:first-child {
  color: var(--text-sub);
  width: 42%;
  font-weight: 500;
}
.spec-table td:last-child {
  color: var(--text);
  font-weight: 500;
}
.spec-table td strong {
  color: var(--teal);
  font-weight: 700;
}
.spec-cat td {
  background: linear-gradient(90deg, rgba(6,182,212,0.07), rgba(6,182,212,0.03));
  font-size: 0.75rem !important;
  font-weight: 700 !important;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--teal) !important;
  padding: 10px 20px !important;
}

/* ============================================================
   CTA SECTION
   ============================================================ */
.cta-section {
  background: linear-gradient(160deg, #f0f4ff 0%, #eef2ff 50%, #f5f0ff 100%);
  padding: 56px 0;
}
.cta-inner {
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
}
.cta-badge {
  display: inline-block;
  padding: 5px 16px;
  background: rgba(59,130,246,0.10);
  border: 1px solid rgba(59,130,246,0.22);
  border-radius: 100px;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.04em;
  margin-bottom: 20px;
}
.cta-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 900;
  color: var(--text);
  letter-spacing: -0.03em;
  margin-bottom: 18px;
}
.cta-desc {
  font-size: 1.0rem;
  color: var(--text-sub);
  line-height: 1.8;
  margin-bottom: 44px;
}
.cta-contacts {
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
  margin-bottom: 36px;
}
.cta-contact-item {
  display: flex;
  align-items: center;
  gap: 14px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 16px 22px;
  transition: border-color var(--trans), box-shadow var(--trans);
  box-shadow: var(--shadow-sm);
}
.cta-contact-item:hover {
  border-color: rgba(59,130,246,0.30);
  box-shadow: var(--shadow);
}
.cta-ci-icon {
  font-size: 1.4rem;
  color: var(--accent);
}
.cta-ci-label {
  display: block;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-sub);
  margin-bottom: 2px;
}
.cta-ci-value {
  display: block;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text);
}
.cta-btn {
  font-size: 1.05rem;
  padding: 16px 44px;
}

/* ============================================================
   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(255,255,255,0.40);
  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: 0.75rem;
  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(255,255,255,0.40);
  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(255,255,255,0.30);
}

/* ============================================================
   VIDEO MODAL
   ============================================================ */
.video-modal {
  position: fixed;
  inset: 0;
  z-index: 9000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}
.video-modal.open {
  opacity: 1;
  pointer-events: all;
}
.modal-overlay {
  position: absolute;
  inset: 0;
  background: rgba(5,8,18,0.88);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}
.modal-content {
  position: relative;
  z-index: 1;
  width: 90%;
  max-width: 900px;
  background: #0d1117;
  border-radius: var(--radius);
  border: 1px solid rgba(255,255,255,0.10);
  overflow: hidden;
  box-shadow: 0 32px 80px rgba(0,0,0,0.6);
  transform: scale(0.92);
  transition: transform 0.3s cubic-bezier(0.34,1.56,0.64,1);
}
.video-modal.open .modal-content { transform: scale(1); }
.modal-close {
  position: absolute;
  top: 14px; right: 14px;
  z-index: 2;
  width: 36px; height: 36px;
  border-radius: 50%;
  background: rgba(255,255,255,0.10);
  color: #fff;
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--trans);
}
.modal-close:hover { background: rgba(255,255,255,0.20); }
.video-wrap {
  position: relative;
  padding-bottom: 56.25%;
  height: 0;
}
.video-wrap iframe {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
  border: none;
}

/* ============================================================
   FADE-UP ANIMATIONS
   ============================================================ */
.fade-up {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s ease, transform 0.7s ease;
  transition-delay: var(--delay, 0s);
}
.fade-up.visible { opacity: 1; transform: translateY(0); }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .hero-inner         { grid-template-columns: 1fr; gap: 40px; text-align: center; }
  .hero-text          { order: 1; }
  .hero-visual        { order: 0; }
  .breadcrumb         { justify-content: center; }
  .hero-cta           { justify-content: center; }
  .hero-stats         { justify-content: center; }
  .product-hero-wrap  { max-width: 460px; }
  .benefits-grid      { grid-template-columns: repeat(2,1fr); }
  .feature-split      { grid-template-columns: 1fr; gap: 48px; }
  .mode-cards         { grid-template-columns: 1fr; }
  .maintenance-grid   { grid-template-columns: 1fr; }
  .specs-layout       { grid-template-columns: 1fr; }
  .specs-img-col      { position: static; }
  .core-grid,
  .core-grid-6        { grid-template-columns: 1fr; }
  .core-zitem         { grid-template-columns: 1fr; gap: 32px; }
  .core-zitem:nth-child(even) .core-zimg  { order: 0; }
  .core-zitem:nth-child(even) .core-ztext { order: 1; }
  .core-zimg img, .core-zvideo video { height: 260px; }
  .space-banner-row   { flex-direction: column; height: auto; }
  .space-banner-card  { height: 200px; flex: none; }
  .adv-grid           { grid-template-columns: repeat(2,1fr); }
  .cleaning-steps-row { grid-template-columns: 1fr; gap: 32px; }
  .cs-divider         { display: none; }
  .footer-top         { grid-template-columns: 1fr; gap: 40px; }
}
@media (max-width: 768px) {
  .container    { padding: 0 20px; }
  .nav-inner    { padding: 0 20px; height: 76px; }
  .nav-links    {
    display: none;
    position: fixed;
    top: 76px; left: 0; right: 0;
    background: rgba(255,255,255,0.97);
    flex-direction: column;
    padding: 12px;
    gap: 2px;
    border-bottom: 1px solid rgba(0,0,0,0.06);
    backdrop-filter: blur(20px);
  }
  .nav-links.open { display: flex; }
  .nav-links a  { font-size: 1rem; padding: 12px 16px; border-radius: 10px; }
  .btn-nav      { display: none; }
  .hamburger    { display: flex; }
  .hero-product { padding-bottom: 60px; }
  .hero-stats   { flex-direction: column; align-items: flex-start; padding: 16px; }
  .hero-stats-2x2 { flex-direction: unset; }
  .stat-item    { flex-direction: row; align-items: center; gap: 10px; padding: 4px 0; }
  .stat-divider { display: none; }
  .benefits-grid        { grid-template-columns: 1fr; }
  .spaces-grid          { grid-template-columns: 1fr 1fr; }
  .maintenance-grid     { grid-template-columns: 1fr; }
  .adv-grid             { grid-template-columns: 1fr; }
  .ct-row               { grid-template-columns: 1fr 1fr; }
  .ct-label             { display: none; }
  .footer-links         { grid-template-columns: 1fr 1fr; }
  .footer-bottom        { flex-direction: column; gap: 8px; text-align: center; }
}
@media (max-width: 480px) {
  .hero-stats   { flex-wrap: wrap; }
  .spaces-grid  { grid-template-columns: 1fr; }
  .hero-cta     { flex-direction: column; }
  .cta-contacts { flex-direction: column; align-items: center; }
  .footer-links { grid-template-columns: 1fr; }
  .compare-wrap { padding: 24px 16px; }
}