/* ===========================
   BRIDGE TECHNOLOGY — STYLES
   명함 브랜드 컬러 적용
   네이비 #0d1b4b + 블루 #2563eb
   =========================== */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg-base:       #ffffff;
  --bg-surface:    #f8faff;
  --bg-card:       #ffffff;
  --bg-card-hover: #f0f5ff;
  --border:        rgba(37, 99, 235, 0.15);
  --border-hover:  rgba(37, 99, 235, 0.4);

  /* 명함 브랜드 컬러 */
  --brand-navy:    #0d1b4b;
  --brand-blue:    #2563eb;
  --brand-blue-lt: #3b82f6;
  --brand-accent:  #1d4ed8;

  --grad-main: linear-gradient(135deg, #0d1b4b 0%, #2563eb 60%, #3b82f6 100%);
  --grad-text: linear-gradient(90deg, #1d4ed8, #2563eb, #3b82f6);
  --grad-btn:  linear-gradient(135deg, #1d4ed8 0%, #2563eb 100%);

  --text-primary:   #0d1b4b;
  --text-secondary: #374151;
  --text-muted:     #6b7280;

  --font-sans:   'Inter', system-ui, sans-serif;
  --font-display:'Space Grotesk', 'Inter', sans-serif;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-xl: 32px;

  --shadow-card: 0 4px 32px rgba(0,0,0,0.5);
  --shadow-glow: 0 0 60px rgba(37, 99, 235, 0.2);

  --nav-h: 72px;
  --transition: 0.3s cubic-bezier(.4,0,.2,1);
}

html { scroll-behavior: smooth; font-size: 16px; }
body {
  background: var(--bg-base);
  color: var(--text-primary);
  font-family: var(--font-sans);
  line-height: 1.7;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

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

.gradient-text {
  background: var(--grad-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ===========================
   NAVIGATION
   =========================== */
#navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  height: var(--nav-h);
  transition: background var(--transition), box-shadow var(--transition);
}
#navbar.scrolled {
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 var(--border), 0 4px 24px rgba(37,99,235,0.1);
}

.nav-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 28px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.nav-logo { display: flex; align-items: center; }
.nav-logo-img { height: 64px; width: auto; }

.nav-links { display: flex; align-items: center; gap: 4px; }
.nav-link {
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--transition), background var(--transition);
  white-space: nowrap;
}
.nav-link:hover, .nav-link.active {
  color: var(--text-primary);
  background: rgba(37, 99, 235, 0.12);
}
.nav-link.nav-cta {
  background: var(--grad-btn);
  color: #fff;
  -webkit-text-fill-color: #fff;
  padding: 8px 20px;
  font-weight: 600;
  box-shadow: 0 2px 12px rgba(37,99,235,0.4);
}
.nav-link.nav-cta:hover { opacity: 0.88; transform: translateY(-1px); }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}
.hamburger span {
  display: block;
  width: 24px; height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: var(--transition);
}

/* ===========================
   HERO
   =========================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: calc(var(--nav-h) + 60px) 24px 80px;
  overflow: hidden;
}

.hero-bg { position: absolute; inset: 0; pointer-events: none; }

.hero-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(37,99,235,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(37,99,235,0.06) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 30%, transparent 100%);
}

.hero-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.3;
}
.glow-1 {
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(37,99,235,0.12) 0%, transparent 70%);
  top: -100px; left: -100px;
}
.glow-2 {
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(29,78,216,0.1) 0%, transparent 70%);
  bottom: -80px; right: -80px;
  opacity: 1;
}
.glow-3 {
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(59,130,246,0.08) 0%, transparent 70%);
  top: 40%; left: 50%;
  transform: translate(-50%, -50%);
  opacity: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 700px;
  text-align: center;
}

.hero-logo-wrap {
  margin-bottom: 28px;
  display: flex;
  justify-content: center;
}
.hero-logo-img {
  height: 140px;
  width: auto;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(37,99,235,0.08);
  border: 1px solid rgba(37,99,235,0.25);
  border-radius: 100px;
  padding: 6px 18px;
  font-size: 0.82rem;
  font-weight: 500;
  color: #2563eb;
  margin-bottom: 20px;
  letter-spacing: 0.03em;
}
.badge-dot {
  width: 7px; height: 7px;
  background: #2563eb;
  border-radius: 50%;
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.4); }
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 5.5vw, 4.2rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 24px;
}

.hero-desc {
  font-size: clamp(1rem, 2vw, 1.15rem);
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 40px;
}
.br-desktop { display: block; }

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 56px;
}

.hero-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 32px;
  flex-wrap: wrap;
}
.stat-item { text-align: center; }
.stat-num {
  display: block;
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 700;
  background: var(--grad-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.stat-divider { width: 1px; height: 40px; background: var(--border); }

.hero-visual {
  position: absolute;
  right: 5%; top: 50%;
  transform: translateY(-50%);
  z-index: 1;
  opacity: 0.45;
}
.visual-orb {
  position: relative;
  width: 320px; height: 320px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.orb-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid;
  animation: spin linear infinite;
}
.ring-1 { width: 100%; height: 100%; border-color: rgba(37,99,235,0.3); animation-duration: 20s; }
.ring-2 { width: 72%; height: 72%; border-color: rgba(13,27,75,0.5); animation-duration: 14s; animation-direction: reverse; }
.ring-3 { width: 44%; height: 44%; border-color: rgba(59,130,246,0.5); animation-duration: 8s; }
@keyframes spin { to { transform: rotate(360deg); } }

.orb-core {
  width: 90px; height: 90px;
  border-radius: 50%;
  background: var(--grad-main);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 40px rgba(37,99,235,0.5);
  padding: 16px;
}
.orb-logo { width: 100%; height: auto; }

.scroll-indicator {
  position: absolute;
  bottom: 32px; left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  z-index: 2;
  animation: bounce 2s infinite;
}
.scroll-arrow {
  width: 20px; height: 20px;
  border-right: 2px solid #2563eb;
  border-bottom: 2px solid #2563eb;
  transform: rotate(45deg);
}
@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(6px); }
}

/* ===========================
   BUTTONS
   =========================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all var(--transition);
  text-decoration: none;
  white-space: nowrap;
}
.btn-primary {
  background: var(--grad-btn);
  color: #fff;
  box-shadow: 0 4px 24px rgba(37,99,235,0.4);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(37,99,235,0.55);
}
.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border: 1.5px solid var(--border-hover);
}
.btn-outline:hover {
  background: rgba(37,99,235,0.1);
  border-color: var(--brand-blue);
  transform: translateY(-2px);
}
.btn-sm { padding: 10px 22px; font-size: 0.88rem; }
.btn-full { width: 100%; }

/* ===========================
   TICKER
   =========================== */
.ticker-section {
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: var(--bg-surface);
  padding: 20px 0;
  display: flex;
  align-items: center;
  gap: 24px;
  overflow: hidden;
}
.ticker-label {
  flex-shrink: 0;
  padding: 0 32px;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  white-space: nowrap;
}
.ticker-track { flex: 1; overflow: hidden; }
.ticker-inner {
  display: flex;
  gap: 48px;
  animation: ticker 20s linear infinite;
  width: max-content;
}
.ticker-item {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-secondary);
  white-space: nowrap;
  padding: 4px 0;
}
.ticker-item::before {
  content: '◆ ';
  color: #2563eb;
  font-size: 0.6rem;
  margin-right: 4px;
}
@keyframes ticker {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* ===========================
   SECTIONS COMMON
   =========================== */
.section { padding: 100px 0; }
.section-header { text-align: center; margin-bottom: 64px; }
.section-tag {
  display: inline-block;
  background: rgba(37,99,235,0.08);
  border: 1px solid rgba(37,99,235,0.25);
  color: #2563eb;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 5px 16px;
  border-radius: 100px;
  margin-bottom: 16px;
}
.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 4vw, 3rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}
.section-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 580px;
  margin: 0 auto;
}

/* ===========================
   ABOUT
   =========================== */
.about-section { background: var(--bg-surface); }
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.about-para { color: var(--text-secondary); margin-bottom: 20px; line-height: 1.8; }
.about-para strong { color: var(--text-primary); }
.about-values { margin-top: 32px; display: flex; flex-direction: column; gap: 16px; }
.value-item { display: flex; align-items: flex-start; gap: 14px; }
.value-icon { flex-shrink: 0; font-size: 1.1rem; color: #2563eb; margin-top: 2px; }
.value-item strong { display: block; font-size: 0.95rem; margin-bottom: 2px; }
.value-item p { font-size: 0.85rem; color: var(--text-secondary); }

.about-visual { display: flex; align-items: center; justify-content: center; }
.about-card-stack { position: relative; width: 340px; height: 340px; }
.about-card {
  position: absolute;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 12px 18px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.88rem;
  font-weight: 600;
  box-shadow: var(--shadow-card);
  animation: float 4s ease-in-out infinite;
}
.card-1 { top: 10px; left: 0; animation-delay: 0s; }
.card-2 { top: 10px; right: 0; animation-delay: 0.8s; }
.card-3 { bottom: 10px; left: 0; animation-delay: 1.6s; }
.card-4 { bottom: 10px; right: 0; animation-delay: 2.4s; }
.card-icon-sm { font-size: 1.4rem; }
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

.about-center-badge {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  background: var(--grad-main);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  text-align: center;
  box-shadow: 0 0 40px rgba(37,99,235,0.45);
  z-index: 2;
}
.badge-logo-img { width: 80px; height: auto; }

/* ===========================
   SERVICES
   =========================== */
.services-section { background: var(--bg-base); }
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.service-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  transition: all var(--transition);
  overflow: hidden;
}
.service-card::before {
  content: attr(data-index);
  position: absolute;
  top: 20px; right: 24px;
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--text-muted);
  letter-spacing: 0.08em;
}
.service-card-glow {
  position: absolute;
  top: -40px; left: -40px;
  width: 160px; height: 160px;
  background: radial-gradient(circle, rgba(37,99,235,0.15) 0%, transparent 70%);
  opacity: 0;
  transition: opacity var(--transition);
  pointer-events: none;
}
.service-card:hover {
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}
.service-card:hover .service-card-glow { opacity: 1; }
.service-icon { font-size: 2.4rem; margin-bottom: 20px; display: block; }
.service-card h3 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 12px;
  line-height: 1.35;
}
.service-card p { font-size: 0.88rem; color: var(--text-secondary); line-height: 1.7; margin-bottom: 20px; }
.service-features { margin-bottom: 24px; display: flex; flex-direction: column; gap: 8px; }
.service-features li {
  font-size: 0.82rem;
  color: var(--text-secondary);
  padding-left: 16px;
  position: relative;
}
.service-features li::before { content: '▸'; position: absolute; left: 0; color: #2563eb; }
.service-link { font-size: 0.85rem; font-weight: 600; color: var(--brand-blue); transition: color var(--transition); }
.service-link:hover { color: var(--brand-accent); }

/* ===========================
   AI TOKEN / API GATEWAY
   =========================== */
.token-section { position: relative; background: var(--bg-surface); overflow: hidden; }
.token-bg { position: absolute; inset: 0; pointer-events: none; }
.token-glow {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 800px; height: 400px;
  background: radial-gradient(ellipse, rgba(37,99,235,0.1) 0%, transparent 70%);
  filter: blur(40px);
}
.token-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}
.token-feature { display: flex; gap: 20px; margin-bottom: 36px; }
.tf-num {
  flex-shrink: 0;
  width: 36px; height: 36px;
  background: rgba(37,99,235,0.08);
  border: 1px solid rgba(37,99,235,0.2);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
  color: #2563eb;
  margin-top: 2px;
}
.tf-content h4 { font-size: 1rem; font-weight: 700; margin-bottom: 6px; }
.tf-content p { font-size: 0.88rem; color: var(--text-secondary); line-height: 1.7; }

.gateway-diagram {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  justify-content: center;
}
.gd-nodes { display: flex; flex-direction: column; gap: 10px; }
.gd-node {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 9px 14px;
  font-size: 0.8rem;
  font-weight: 600;
  text-align: center;
  min-width: 80px;
  transition: border-color var(--transition);
}
.gd-node:hover { border-color: var(--brand-blue); }
.node-openai { border-left: 3px solid #10a37f; }
.node-claude  { border-left: 3px solid #d97706; }
.node-gemini  { border-left: 3px solid #4285f4; }
.node-custom  { border-left: 3px solid #8b5cf6; }
.gd-center { display: flex; align-items: center; justify-content: center; }
.gd-badge {
  width: 80px; height: 80px;
  background: var(--grad-main);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.78rem;
  font-weight: 700;
  text-align: center;
  line-height: 1.3;
  box-shadow: 0 0 30px rgba(37,99,235,0.4);
}
.gd-client { display: flex; align-items: center; gap: 8px; }
.gd-arrow-right { font-size: 1.2rem; color: #60a5fa; }
.gd-client-box {
  background: var(--bg-surface);
  border: 1px solid var(--border-hover);
  border-radius: var(--radius-sm);
  padding: 9px 14px;
  font-size: 0.82rem;
  font-weight: 600;
}
.token-cta-box {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 24px;
  text-align: center;
}
.token-cta-box p { font-size: 0.9rem; color: var(--text-secondary); margin-bottom: 16px; }

/* ===========================
   BUSINESS INQUIRY
   =========================== */
.inquiry-section { background: var(--bg-base); }
.inquiry-layout {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 64px;
  align-items: start;
}
.inquiry-info h3 { font-family: var(--font-display); font-size: 1.4rem; font-weight: 700; margin-bottom: 28px; }
.inquiry-types { display: flex; flex-direction: column; gap: 16px; margin-bottom: 36px; }
.inq-type {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition);
}
.inq-type:hover { border-color: var(--border-hover); }
.inq-icon { font-size: 1.4rem; flex-shrink: 0; }
.inq-type strong { display: block; font-size: 0.92rem; margin-bottom: 3px; }
.inq-type p { font-size: 0.82rem; color: var(--text-secondary); }
.inquiry-direct { border-top: 1px solid var(--border); padding-top: 24px; }
.inquiry-direct p { font-size: 0.85rem; color: var(--text-muted); margin-bottom: 12px; }
.direct-link {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  color: #2563eb;
  margin-bottom: 8px;
  transition: color var(--transition);
}
.direct-link:hover { color: #1d4ed8; }

.inquiry-form {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px 36px;
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { margin-bottom: 20px; }
.form-group label {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 8px;
  letter-spacing: 0.02em;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.92rem;
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
  -webkit-appearance: none;
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--text-muted); }
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--brand-blue);
  box-shadow: 0 0 0 3px rgba(37,99,235,0.18);
}
.form-group select option { background: var(--bg-card); }
.form-group textarea { resize: vertical; min-height: 120px; }
.form-note { text-align: center; font-size: 0.78rem; color: var(--text-muted); margin-top: 12px; }

/* ===========================
   CONTACT
   =========================== */
.contact-section { background: var(--bg-surface); }
.contact-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  justify-content: center;
  margin-bottom: 56px;
}
.contact-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  text-align: center;
  min-width: 160px;
  flex: 1;
  max-width: 200px;
  transition: all var(--transition);
}
.contact-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}
.contact-icon { font-size: 2rem; margin-bottom: 12px; }
.contact-card h4 {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 8px;
}
.contact-card p { font-size: 0.9rem; font-weight: 600; color: var(--text-primary); word-break: break-all; }
.contact-card a { font-size: 0.88rem; font-weight: 600; color: #2563eb; word-break: break-all; transition: color var(--transition); }
.contact-card a:hover { color: #1d4ed8; }

.contact-cta {
  text-align: center;
  padding: 48px 32px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  background-image: radial-gradient(ellipse 60% 60% at 50% 100%, rgba(37,99,235,0.1) 0%, transparent 100%);
}
.contact-cta p { font-family: var(--font-display); font-size: 1.5rem; font-weight: 700; margin-bottom: 24px; }

/* ===========================
   FOOTER
   =========================== */
.footer {
  background: var(--bg-base);
  border-top: 1px solid var(--border);
  padding: 64px 0 32px;
}
.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}
.footer-logo-img { height: 72px; width: auto; margin-bottom: 16px; }
.footer-brand p { font-size: 0.85rem; color: var(--text-muted); margin-bottom: 16px; line-height: 1.7; }
.footer-contact-quick { display: flex; flex-direction: column; gap: 8px; }
.footer-contact-quick a { font-size: 0.85rem; color: #2563eb; transition: color var(--transition); }
.footer-contact-quick a:hover { color: #1d4ed8; }
.footer-links-group h5 {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 16px;
}
.footer-links-group ul { display: flex; flex-direction: column; gap: 10px; }
.footer-links-group a { font-size: 0.88rem; color: var(--text-secondary); transition: color var(--transition); }
.footer-links-group a:hover { color: #2563eb; }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.82rem;
  color: var(--text-muted);
}
.footer-bottom a { color: #2563eb; }

/* ===========================
   PARTICLES
   =========================== */
.particles { position: absolute; inset: 0; pointer-events: none; }
.particle {
  position: absolute;
  width: 3px; height: 3px;
  background: #2563eb;
  border-radius: 50%;
  opacity: 0;
  animation: particleFloat linear infinite;
}
@keyframes particleFloat {
  0% { opacity: 0; transform: translateY(0) scale(0); }
  10% { opacity: 0.7; }
  90% { opacity: 0.3; }
  100% { opacity: 0; transform: translateY(-120px) scale(1.5); }
}

/* ===========================
   RESPONSIVE
   =========================== */
@media (max-width: 1100px) {
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .hero-visual { display: none; }
}
@media (max-width: 900px) {
  .about-grid { grid-template-columns: 1fr; }
  .about-visual { order: -1; }
  .token-layout { grid-template-columns: 1fr; }
  .inquiry-layout { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  :root { --nav-h: 64px; }
  .section { padding: 72px 0; }
  .nav-links {
    display: none;
    position: fixed;
    top: var(--nav-h); left: 0; right: 0;
    background: rgba(255,255,255,0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 24px;
    gap: 4px;
    border-bottom: 1px solid var(--border);
  }
  .nav-links.open { display: flex; }
  .nav-link { width: 100%; padding: 12px 16px; }
  .hamburger { display: flex; }
  .hero-title { font-size: 2.2rem; }
  .br-desktop { display: none; }
  .services-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .about-card-stack { width: 280px; height: 280px; }
  .contact-card { max-width: 100%; }
}
@media (max-width: 480px) {
  .hero-stats { gap: 20px; }
  .stat-divider { display: none; }
  .inquiry-form { padding: 24px 20px; }
  .gateway-diagram { flex-direction: column; }
}

/* ===========================
   LANGUAGE SWITCHER
   =========================== */
.lang-switcher {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: 8px;
  flex-shrink: 0;
}
.lang-btn {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-secondary);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 5px 10px;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
  font-family: var(--font-sans);
  letter-spacing: 0.02em;
}
.lang-btn:hover {
  border-color: var(--brand-blue);
  color: var(--text-primary);
  background: rgba(37,99,235,0.1);
}
.lang-btn.active {
  background: var(--brand-blue);
  border-color: var(--brand-blue);
  color: #fff;
}
@media (max-width: 768px) {
  .lang-switcher {
    margin-left: 0;
    order: -1;
  }
  .lang-btn {
    padding: 4px 7px;
    font-size: 0.7rem;
  }
}

/* ===========================
   SCROLL ANIMATIONS
   =========================== */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.fade-up.visible { opacity: 1; transform: translateY(0); }