/* ============================================================
   EBYG Automation — Styles v2
   Design inspired by explanationbygeneration.com
   Brand: Professional, warm, business-first
   Two brands: EBYG Automation (education) + Jeong AI (partnership)
   ============================================================ */

/* ---------- VARIABLES ---------- */
:root {
  --primary: #0a4f8a;
  --primary-dark: #083d6b;
  --primary-light: #1a6fb8;
  --accent: #c7553b;
  --accent-hover: #a8432d;
  --dark: #1a1a2e;
  --text: #3a3a4a;
  --text-light: #6b6b7b;
  --light: #f7f8fa;
  --white: #ffffff;
  --border: #e2e4e8;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.12);
  --shadow-xl: 0 16px 48px rgba(0,0,0,0.14);
  --radius: 6px;
  --radius-lg: 12px;
  --transition: 0.25s ease;
  --font-heading: 'Montserrat', sans-serif;
  --font-body: 'Source Sans 3', 'Source Sans Pro', sans-serif;
  --max-width: 1200px;
  --header-h: 80px;
  --purple: #7C3AED;
  --purple-mid: #8B5CF6;
  --purple-light: #EDE9FE;
  --purple-pale: #F5F3FF;
}

/* ---------- RESET ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: var(--header-h); overflow-x: hidden; }
body {
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.65;
  color: var(--text);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--accent); }
ul { list-style: none; }

/* ---------- UTILITIES ---------- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
}
.section-tag {
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--primary);
  margin-bottom: 0.75rem;
}
.section-center { text-align: center; max-width: 750px; margin: 0 auto 3.5rem; }
.section-grid { display: grid; gap: 4rem; align-items: center; }
.two-col { grid-template-columns: 1fr 1fr; }
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--dark);
  line-height: 1.3;
  font-weight: 600;
}
h1 { font-size: 3.2rem; line-height: 1.15; }
h2 { font-size: 2.4rem; margin-bottom: 1rem; }
h3 { font-size: 1.4rem; margin-bottom: 0.5rem; }
h4 { font-size: 1.1rem; }
.highlight { color: var(--primary); }
.lead { font-size: 1.15rem; color: var(--text-light); line-height: 1.7; margin-bottom: 1.25rem; }
blockquote {
  border-left: 4px solid var(--primary);
  padding: 1rem 1.5rem;
  margin: 1.5rem 0;
  font-style: italic;
  color: var(--text-light);
  background: var(--light);
  border-radius: 0 var(--radius) var(--radius) 0;
}

/* ---------- BUTTONS ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 600;
  padding: 0.85rem 2rem;
  border-radius: var(--radius);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
}
.btn-primary {
  background: var(--primary);
  color: var(--white);
  border-color: var(--primary);
}
.btn-primary:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--white);
}
.btn-outline {
  background: transparent;
  color: var(--primary);
  border-color: var(--primary);
}
.btn-outline:hover {
  background: var(--primary);
  color: var(--white);
}
.btn-sm { padding: 0.65rem 1.5rem; font-size: 0.88rem; }
.btn-full { width: 100%; }
.btn { -webkit-tap-highlight-color: transparent; }

/* ---------- HEADER ---------- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-h);
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(10px);
  z-index: 1000;
  border-bottom: 1px solid var(--border);
  transition: box-shadow var(--transition);
}
.site-header.scrolled { box-shadow: var(--shadow-md); }
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}
.logo {
  display: flex;
  align-items: baseline;
  gap: 0.35rem;
  font-family: var(--font-heading);
  text-decoration: none;
}
.logo-ebyg {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--primary);
}
.logo-auto {
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--text-light);
}
.nav-list {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}
.nav-list a {
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text);
  transition: color var(--transition);
  position: relative;
}
.nav-list a::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0;
  width: 0; height: 2px;
  background: var(--primary);
  transition: width var(--transition);
}
.nav-list a:hover { color: var(--primary); }
.nav-list a:hover::after { width: 100%; }
.nav-cta {
  background: var(--primary);
  color: var(--white) !important;
  padding: 0.55rem 1.25rem;
  border-radius: var(--radius);
}
.nav-cta::after { display: none !important; }
.nav-cta:hover { background: var(--accent); color: var(--white) !important; }

/* Mobile toggle */
.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.mobile-toggle span {
  width: 26px; height: 2px;
  background: var(--dark);
  border-radius: 2px;
  transition: all var(--transition);
}
.mobile-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.mobile-toggle.active span:nth-child(2) { opacity: 0; }
.mobile-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ---------- HERO ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-top: var(--header-h);
}
.hero-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, #f0f4f8 0%, #e8edf4 40%, #dce4ef 100%);
  z-index: -2;
}
.hero-bg::before {
  content: '';
  position: absolute;
  top: -50%; right: -20%;
  width: 800px; height: 800px;
  background: radial-gradient(circle, rgba(10,79,138,0.06) 0%, transparent 70%);
  border-radius: 50%;
}
.hero-bg::after {
  content: '';
  position: absolute;
  bottom: -30%; left: -10%;
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(199,85,59,0.04) 0%, transparent 70%);
  border-radius: 50%;
}
.hero-content {
  max-width: 750px;
  padding: 4rem 0;
}
.hero-tag {
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--text-light);
  margin-bottom: 1.5rem;
}
.hero h1 { margin-bottom: 1.5rem; }
.hero-sub {
  font-size: 1.2rem;
  line-height: 1.7;
  color: var(--text-light);
  margin-bottom: 2.5rem;
  max-width: 660px;
}
.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; }

.hero-scroll {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}
.hero-scroll span {
  font-family: var(--font-heading);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--text-light);
}
.scroll-line {
  width: 1px; height: 40px;
  background: var(--border);
  position: relative;
  overflow: hidden;
}
.scroll-line::after {
  content: '';
  position: absolute;
  top: -100%; left: 0;
  width: 100%; height: 50%;
  background: var(--primary);
  animation: scrollDown 2s ease infinite;
}
@keyframes scrollDown {
  0% { top: -50%; }
  100% { top: 150%; }
}

/* ---------- TRUST BAR ---------- */
.trust-bar {
  background: var(--primary);
  padding: 2rem 0;
}
.trust-items {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  text-align: center;
}
.trust-number {
  display: block;
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 700;
  color: var(--white);
}
.trust-label {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.75);
  font-weight: 500;
}

/* ---------- ABOUT ---------- */
.about {
  padding: 6rem 0;
}
.about-text p { margin-bottom: 1rem; }
.about-text .lead { font-size: 1.1rem; }
.about-visual {
  display: flex;
  align-items: center;
  justify-content: center;
}
.jeong-card {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: var(--white);
  padding: 3.5rem;
  border-radius: var(--radius-lg);
  text-align: center;
  box-shadow: var(--shadow-xl);
  max-width: 360px;
  width: 100%;
}
.jeong-symbol {
  font-size: 5rem;
  line-height: 1;
  margin-bottom: 1rem;
  opacity: 0.9;
}
.jeong-card h3 {
  color: var(--white);
  font-size: 1.8rem;
  margin-bottom: 1rem;
}
.jeong-card p {
  font-size: 1rem;
  opacity: 0.85;
  line-height: 1.6;
}

/* ---------- FRICTION (Problem section) ---------- */
.friction {
  padding: 6rem 0;
  background: var(--light);
}
.friction-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}
.friction-card {
  background: var(--white);
  padding: 2rem 1.75rem;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  transition: all var(--transition);
}
.friction-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}
.friction-icon {
  width: 40px; height: 40px;
  color: var(--primary);
  margin-bottom: 1rem;
}
.friction-icon svg { width: 100%; height: 100%; }
.friction-card h3 {
  font-size: 1.15rem;
  margin-bottom: 0.75rem;
  color: var(--primary);
}
.friction-card ul { margin: 0; }
.friction-card li {
  position: relative;
  padding-left: 1.25rem;
  margin-bottom: 0.45rem;
  font-size: 0.88rem;
  color: var(--text-light);
}
.friction-card li::before {
  content: '';
  position: absolute;
  left: 0; top: 9px;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent);
  opacity: 0.6;
}
.friction-bottom {
  text-align: center;
  max-width: 700px;
  margin: 2.5rem auto 0;
}
.friction-bottom p {
  font-size: 1rem;
  color: var(--text-light);
  line-height: 1.7;
}

/* ---------- ECOSYSTEM ---------- */
.ecosystem {
  padding: 6rem 0;
}
.ecosystem-brands {
  display: flex;
  align-items: stretch;
  gap: 0;
  max-width: 900px;
  margin: 0 auto;
}
.eco-brand {
  flex: 1;
  padding: 2.5rem;
  border-radius: var(--radius-lg);
  text-align: center;
}
.eco-brand-ebyg {
  background: var(--light);
  border: 1px solid var(--border);
}
.eco-brand-jeong {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: var(--white);
}
.eco-brand-jeong h3 { color: var(--white); }
.eco-brand-jeong p { opacity: 0.85; }
.eco-brand-tag {
  font-family: var(--font-heading);
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 0.75rem;
  opacity: 0.6;
}
.eco-brand h3 {
  font-size: 1.5rem;
  margin-bottom: 0.75rem;
}
.eco-brand p {
  font-size: 0.93rem;
  line-height: 1.6;
  margin-bottom: 1.25rem;
}
.eco-arrow {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 600;
  opacity: 0.7;
}
.eco-transition {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 0 1.5rem;
  flex-shrink: 0;
}
.eco-transition-line {
  width: 2px;
  flex: 1;
  background: var(--border);
  min-height: 30px;
}
.eco-transition-label {
  font-family: var(--font-heading);
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--accent);
  text-align: center;
  padding: 0.75rem 0;
  line-height: 1.4;
}

/* ---------- DIGITAL PRODUCTS ---------- */
.products {
  padding: 6rem 0;
  background: var(--light);
}
.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  align-items: stretch;
}
.product-card {
  position: relative;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2.5rem 2rem;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
}
.product-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}
.product-card.featured {
  border-color: var(--accent);
  border-width: 2px;
  box-shadow: var(--shadow-md);
}
.product-badge {
  position: absolute;
  top: -14px; left: 50%;
  transform: translateX(-50%);
  background: var(--accent);
  color: var(--white);
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  padding: 0.35rem 1.25rem;
  border-radius: 20px;
  white-space: nowrap;
}
.product-level {
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--text-light);
  margin-bottom: 0.5rem;
}
.product-card h3 { font-size: 1.35rem; margin-bottom: 0.5rem; }
.product-price {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 1rem;
}
.product-for {
  color: var(--text-light);
  font-size: 0.93rem;
  margin-bottom: 1.5rem;
  font-style: italic;
}
.product-features {
  margin-bottom: 1.5rem;
  flex-grow: 1;
}
.product-features li {
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: 0.6rem;
  font-size: 0.93rem;
  color: var(--text);
}
.product-features li::before {
  content: '';
  position: absolute;
  left: 0; top: 8px;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--accent);
  opacity: 0.5;
}
.product-features li.product-included {
  color: var(--primary);
  font-weight: 600;
  font-size: 0.85rem;
  font-style: italic;
  margin-bottom: 0.25rem;
}
.product-features li.product-included::before {
  background: var(--primary);
  opacity: 0.6;
}
.product-features li.product-bonus {
  color: var(--primary);
  font-weight: 600;
  font-size: 0.9rem;
  margin-top: 0.5rem;
  padding-top: 0.5rem;
  border-top: 1px solid var(--border);
}
.product-features li.product-bonus::before {
  background: var(--primary);
  opacity: 0.8;
}
.product-card .btn { align-self: flex-start; }

/* ---------- JEONG AI SERVICES ---------- */
.services {
  padding: 6rem 0;
}
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  align-items: stretch;
}
.service-card {
  position: relative;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2.5rem 2rem;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
}
.service-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}
.service-card.featured {
  border-color: var(--primary);
  border-width: 2px;
  box-shadow: var(--shadow-md);
}
.service-badge {
  position: absolute;
  top: -14px; left: 50%;
  transform: translateX(-50%);
  background: var(--primary);
  color: var(--white);
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  padding: 0.35rem 1.25rem;
  border-radius: 20px;
  white-space: nowrap;
}
.service-tier {
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--text-light);
  margin-bottom: 0.5rem;
}
.service-card h3 { font-size: 1.35rem; margin-bottom: 0.5rem; }
.service-price {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 1rem;
}
.service-desc {
  color: var(--text-light);
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
}
.service-features {
  margin-bottom: 1.5rem;
  flex-grow: 1;
}
.service-features li {
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: 0.6rem;
  font-size: 0.93rem;
  color: var(--text);
}
.service-features li::before {
  content: '';
  position: absolute;
  left: 0; top: 8px;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--primary);
  opacity: 0.5;
}
.service-for {
  font-size: 0.88rem;
  color: var(--text-light);
  margin-bottom: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}
.service-card .btn { align-self: flex-start; }

/* ---------- SUPPORT PLAN ---------- */
.support {
  padding: 6rem 0;
  background: var(--light);
}
.support-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}
.support-text p { margin-bottom: 1rem; }
.support-card-wrap {
  display: flex;
  justify-content: center;
}
.support-price-card {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: var(--white);
  padding: 3rem;
  border-radius: var(--radius-lg);
  text-align: center;
  box-shadow: var(--shadow-lg);
  max-width: 420px;
  width: 100%;
}
.support-price {
  font-family: var(--font-heading);
  font-size: 2.2rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}
.support-price span {
  font-size: 1rem;
  font-weight: 400;
  opacity: 0.75;
}
.support-tagline {
  font-size: 1rem;
  opacity: 0.85;
  margin-bottom: 1.75rem;
  line-height: 1.5;
}
.support-inclusions {
  text-align: left;
  margin-bottom: 2rem;
}
.support-inclusions li {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.65rem;
  font-size: 0.93rem;
  opacity: 0.9;
}
.support-inclusions svg {
  width: 18px; height: 18px;
  flex-shrink: 0;
  opacity: 0.75;
}
.support-price-card .btn {
  background: var(--white);
  color: var(--primary);
  border-color: var(--white);
}
.support-price-card .btn:hover {
  background: var(--accent);
  color: var(--white);
  border-color: var(--accent);
}

/* ---------- HOW IT WORKS ---------- */
.how-it-works {
  padding: 6rem 0;
}
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}
.step-card {
  position: relative;
  background: var(--white);
  padding: 2.5rem 2rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  transition: all var(--transition);
}
.step-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}
.step-number {
  font-family: var(--font-heading);
  font-size: 3rem;
  font-weight: 700;
  color: var(--primary);
  opacity: 0.15;
  line-height: 1;
  margin-bottom: 1rem;
}
.step-card h3 { color: var(--primary); margin-bottom: 0.75rem; }
.step-card p { font-size: 0.93rem; color: var(--text-light); }

/* ---------- INDUSTRIES ---------- */
.industries {
  padding: 6rem 0;
  background: var(--light);
}
.industries-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}
.industry-card {
  background: var(--white);
  padding: 1.75rem 1.5rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  transition: all var(--transition);
  text-align: center;
}
.industry-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-sm);
  transform: translateY(-3px);
}
.industry-card .industry-icon {
  width: 36px; height: 36px;
  color: var(--primary);
  margin: 0 auto 1rem;
}
.industry-card .industry-icon svg { width: 100%; height: 100%; }
.industry-card h4 {
  font-size: 0.95rem;
  margin-bottom: 0.4rem;
}
.industry-card p {
  font-size: 0.82rem;
  color: var(--text-light);
  line-height: 1.5;
}

/* ---------- COMPETITIVE ADVANTAGE ---------- */
.advantage {
  padding: 6rem 0;
}
.advantage-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}
.advantage-content p { margin-bottom: 1rem; }
.advantage-points {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}
.advantage-point {
  display: flex;
  gap: 1.25rem;
  align-items: flex-start;
}
.advantage-num {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary);
  opacity: 0.25;
  flex-shrink: 0;
  line-height: 1.2;
}
.advantage-point h4 { margin-bottom: 0.35rem; }
.advantage-point p { font-size: 0.93rem; color: var(--text-light); }

/* ---------- CTA / CONTACT ---------- */
.cta-section {
  padding: 6rem 0;
  background: var(--light);
}
.cta-box {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}
.cta-content h2 {
  font-size: 2.2rem;
  margin-bottom: 1rem;
}
.cta-list {
  margin-top: 1.5rem;
}
.cta-list li {
  position: relative;
  padding-left: 1.75rem;
  margin-bottom: 0.75rem;
  font-size: 1rem;
}
.cta-list li::before {
  content: '\2192';
  position: absolute;
  left: 0;
  color: var(--primary);
  font-weight: 600;
}
.cta-note {
  margin-top: 1.5rem;
  font-style: italic;
  color: var(--text-light);
  font-size: 0.95rem;
}
.cta-form-wrap {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: var(--shadow-md);
}
.cta-form h3 {
  margin-bottom: 1.5rem;
  text-align: center;
}
.form-group {
  margin-bottom: 1.25rem;
}
.form-group label {
  display: block;
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 0.4rem;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--white);
  color: var(--text);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(10,79,138,0.1);
}
.form-group textarea { resize: vertical; }

/* ---------- FOOTER ---------- */
.site-footer {
  background: var(--dark);
  color: rgba(255,255,255,0.7);
  padding: 4rem 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  padding-bottom: 3rem;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}
.footer-brand p {
  font-size: 0.93rem;
  margin-top: 1rem;
  line-height: 1.6;
}
.footer-division {
  font-size: 0.82rem;
  opacity: 0.5;
  margin-top: 1rem !important;
}
.footer-brand .logo-ebyg { color: var(--white); }
.footer-brand .logo-auto { color: rgba(255,255,255,0.5); }
.footer-links h4 {
  color: var(--white);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 1.25rem;
}
.footer-links li { margin-bottom: 0.65rem; }
.footer-links a {
  color: rgba(255,255,255,0.6);
  font-size: 0.9rem;
  transition: color var(--transition);
}
.footer-links a:hover { color: var(--white); }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem 0;
  font-size: 0.85rem;
}
.footer-legal {
  display: flex;
  gap: 1.5rem;
}
.footer-legal a { color: rgba(255,255,255,0.5); }
.footer-legal a:hover { color: var(--white); }

/* ---------- SCROLL TO TOP ---------- */
.scroll-top {
  position: fixed;
  bottom: 2rem; right: 2rem;
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--primary);
  color: var(--white);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  opacity: 0;
  transform: translateY(10px);
  transition: all var(--transition);
  z-index: 99;
}
.scroll-top.visible { opacity: 1; transform: translateY(0); }
.scroll-top:hover { background: var(--accent); }
.scroll-top svg { width: 20px; height: 20px; }

/* ---------- WEB SERVICES ---------- */
.web-services {
  padding: 6rem 0;
  background: var(--light);
}
.web-services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-top: 3rem;
}
.web-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 2.5rem 2rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  transition: box-shadow var(--transition), transform var(--transition);
}
.web-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}
.web-icon {
  width: 48px;
  height: 48px;
  color: var(--primary);
  margin-bottom: 1.25rem;
}
.web-icon svg {
  width: 100%;
  height: 100%;
}
.web-card h3 {
  font-size: 1.2rem;
  margin-bottom: 0.75rem;
}
.web-card p {
  font-size: 0.95rem;
  color: var(--text-light);
  line-height: 1.65;
}
.web-services-bottom {
  text-align: center;
  margin-top: 3rem;
}
.web-services-bottom p {
  max-width: 700px;
  margin: 0 auto 1.5rem;
  font-size: 1.05rem;
}

/* ---------- ANIMATIONS (scroll reveal) ---------- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================================
   RESPONSIVE
   ============================================================ */

@media (max-width: 1024px) {
  h1 { font-size: 2.6rem; }
  h2 { font-size: 2rem; }
  .friction-grid { grid-template-columns: repeat(2, 1fr); }
  .products-grid { grid-template-columns: 1fr; max-width: 480px; margin: 0 auto; }
  .services-grid { grid-template-columns: 1fr; max-width: 480px; margin: 0 auto; }
  .web-services-grid { grid-template-columns: 1fr; max-width: 480px; margin: 2rem auto 0; }
  .steps-grid { grid-template-columns: repeat(2, 1fr); }
  .industries-grid { grid-template-columns: repeat(2, 1fr); }
  .support-layout { grid-template-columns: 1fr; }
  .advantage-inner { grid-template-columns: 1fr; }
  .cta-box { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .ecosystem-brands { flex-direction: column; max-width: 500px; }
  .eco-transition { flex-direction: row; padding: 1rem 0; }
  .eco-transition-line { width: auto; height: 2px; flex: 1; min-height: auto; min-width: 30px; }
}

@media (max-width: 768px) {
  .two-col { grid-template-columns: 1fr; }
  .trust-items { grid-template-columns: repeat(2, 1fr); }
  .friction-grid { grid-template-columns: 1fr; max-width: 480px; margin: 0 auto; }
  h1 { font-size: 2.2rem; }
  h2 { font-size: 1.75rem; }
  .lead { font-size: 1.05rem; }
  .hero-content { padding: 3rem 0; }
  .hero h1 br { display: none; }
  .hero-sub { font-size: 1.05rem; }
  .hero-actions { flex-direction: column; align-items: flex-start; }
  .hero-actions .btn { width: 100%; text-align: center; }

  /* Section padding reduction */
  .about, .friction, .ecosystem, .products, .services,
  .support, .how-it-works, .industries, .advantage,
  .cta-section, .web-services { padding: 4rem 0; }
  .section-center { margin-bottom: 2.5rem; }

  /* CTA form */
  .cta-form-wrap { padding: 1.75rem; }
  .cta-content h2 { font-size: 1.75rem; }

  /* Support price card */
  .support-price { font-size: 1.75rem; }
  .support-price-card { padding: 2rem 1.5rem; }

  /* Mobile nav */
  .mobile-toggle { display: flex; }
  .main-nav {
    position: fixed;
    top: var(--header-h);
    left: 0; right: 0;
    background: var(--white);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
    padding: 1.5rem 2rem;
    transform: translateY(-110%);
    transition: transform 0.35s ease;
  }
  .main-nav.open { transform: translateY(0); }
  .nav-list {
    flex-direction: column;
    gap: 1rem;
    align-items: flex-start;
  }
  .nav-cta {
    margin-top: 0.5rem;
  }
}

@media (max-width: 544px) {
  .container { padding: 0 1.25rem; }
  h1 { font-size: 1.9rem; }
  h2 { font-size: 1.5rem; }
  .lead { font-size: 1rem; }
  .hero { min-height: auto; padding-top: calc(var(--header-h) + 2rem); padding-bottom: 4rem; }
  .hero-scroll { display: none; }
  .hero-sub { font-size: 1rem; }
  .trust-items { grid-template-columns: repeat(2, 1fr); gap: 1rem; }
  .trust-number { font-size: 1.5rem; }
  .steps-grid { grid-template-columns: 1fr; }
  .industries-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: 0.75rem; text-align: center; }
  .jeong-card { padding: 2.5rem 2rem; }
  .jeong-symbol { font-size: 3.5rem; }

  /* Section padding further reduced */
  .about, .friction, .ecosystem, .products, .services,
  .support, .how-it-works, .industries, .advantage,
  .cta-section, .web-services { padding: 3rem 0; }
  .section-center { margin-bottom: 2rem; }

  /* Cards & form */
  .product-card, .service-card, .web-card { padding: 2rem 1.5rem; }
  .cta-form-wrap { padding: 1.5rem 1.25rem; }
  .cta-box { gap: 2.5rem; }
  .support-layout { gap: 2.5rem; }
  .advantage-inner { gap: 2.5rem; }

  /* Buttons full-width on small screens */
  .product-card .btn, .service-card .btn { width: 100%; text-align: center; }
  .web-services-bottom .btn { width: 100%; }

  /* Ecosystem cards */
  .eco-brand { padding: 2rem 1.5rem; }
}