/* ====================================================
   에어커넥트랩 — Global Styles  (Toss-style Refined)
   ==================================================== */

:root {
  /* Toss-inspired palette */
  --color-primary:       #191F28;
  --color-primary-sub:   #333D4B;
  --color-accent:        #3182F6;
  --color-accent-hover:  #1B64DA;
  --color-accent-soft:   #EBF3FE;
  --color-accent-glow:   rgba(49, 130, 246, 0.22);

  --color-bg:            #F2F4F7;
  --color-bg-alt:        #F9FAFB;
  --color-surface:       #FFFFFF;
  --color-surface-2:     #F9FAFB;

  --color-text:          #191F28;
  --color-text-sub:      #333D4B;
  --color-text-muted:    #8B95A1;
  --color-text-hint:     #B0B8C1;

  --color-border:        #E5E8EB;
  --color-border-light:  #F2F4F7;
  --color-success:       #23C45E;
  --color-purple:        #6B5CE7;

  --font-sans: 'Inter', 'Noto Sans KR', -apple-system, BlinkMacSystemFont, sans-serif;

  --radius-xs: 6px;
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --radius-full: 9999px;

  --shadow-xs: 0 1px 4px rgba(0,0,0,0.05);
  --shadow-sm: 0 2px 12px rgba(0,0,0,0.06);
  --shadow-md: 0 8px 32px rgba(0,0,0,0.09);
  --shadow-lg: 0 24px 64px rgba(0,0,0,0.12);

  --transition: 0.22s cubic-bezier(0.4, 0, 0.2, 1);
  --nav-height: 64px;
}

/* ---- Reset & Base ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; display: block; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

.container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ====================================================
   NAVIGATION
   ==================================================== */
.nav-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  height: var(--nav-height);
  transition: background var(--transition), box-shadow var(--transition);
}

.nav-header.scrolled {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  box-shadow: 0 1px 0 var(--color-border);
}

/* ── Hero 위 투명 상태일 때 흰색 텍스트 ── */
.nav-header:not(.scrolled) .nav-logo {
  color: #fff;
}
.nav-header:not(.scrolled) .nav-link {
  color: rgba(255, 255, 255, 0.72);
}
.nav-header:not(.scrolled) .nav-link:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.1);
}
.nav-header:not(.scrolled) .nav-link--cta {
  color: #fff !important;
}
.nav-header:not(.scrolled) .lang-toggle {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.28);
  color: rgba(255, 255, 255, 0.85);
}
.nav-header:not(.scrolled) .lang-toggle:hover {
  background: rgba(255, 255, 255, 0.2);
  border-color: rgba(255, 255, 255, 0.55);
  color: #fff;
  box-shadow: none;
}
.nav-header:not(.scrolled) .hamburger span {
  background: #fff;
}

/* ── 모바일 메뉴 열렸을 때: 흰 배경이므로 어두운 텍스트 강제 ── */
.nav-links.open .nav-link {
  color: var(--color-text-sub) !important;
  background: transparent;
}
.nav-links.open .nav-link:hover {
  color: var(--color-primary) !important;
  background: var(--color-bg);
}
.nav-links.open .nav-link--cta {
  color: #fff !important;
  background: var(--color-accent);
}

.nav-container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 800;
  font-size: 1.05rem;
  color: var(--color-primary);
  letter-spacing: -0.01em;
  transition: opacity var(--transition);
}
.nav-logo:hover { opacity: 0.72; }

.logo-icon {
  font-size: 1.25rem;
  display: inline-flex;
  align-items: center;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2px;
}

.nav-link {
  padding: 7px 14px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-muted);
  border-radius: var(--radius-full);
  transition: color var(--transition), background var(--transition);
  letter-spacing: -0.01em;
}
.nav-link:hover {
  color: var(--color-primary);
  background: var(--color-bg);
}
.nav-header.scrolled .nav-link.active:not(.nav-link--cta) {
  color: var(--color-accent);
  background: var(--color-accent-soft);
}

.nav-link--cta {
  background: var(--color-accent);
  color: #fff !important;
  padding: 8px 18px;
  font-weight: 600;
  margin-left: 8px;
}
.nav-link--cta:hover {
  background: var(--color-accent-hover) !important;
  color: #fff;
}

.lang-toggle {
  height: 34px;
  min-width: 58px;
  padding: 0 12px;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  background: #fff;
  color: var(--color-primary-sub);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  transition: all var(--transition);
}
.lang-toggle:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-glow);
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
}
.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-primary);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ====================================================
   HERO
   ==================================================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: #0D1B2E;
  padding-top: var(--nav-height);
}

/* Toss-style gradient mesh */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 60% at 60% 30%, rgba(49, 130, 246, 0.28) 0%, transparent 65%),
    radial-gradient(ellipse 50% 50% at 20% 80%, rgba(107, 92, 231, 0.18) 0%, transparent 55%),
    radial-gradient(ellipse 40% 40% at 90% 80%, rgba(35, 196, 94, 0.08) 0%, transparent 55%);
  pointer-events: none;
  z-index: 0;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

#particles-canvas {
  width: 100%;
  height: 100%;
  display: block;
  opacity: 0.6;
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 56px 24px;
  max-width: 800px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.16);
  color: rgba(255, 255, 255, 0.75);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 6px 16px;
  border-radius: var(--radius-full);
  letter-spacing: 0.04em;
  margin-bottom: 32px;
  backdrop-filter: blur(8px);
}

.hero-title {
  font-size: clamp(2.6rem, 6.5vw, 4.4rem);
  font-weight: 900;
  color: #fff;
  line-height: 1.15;
  margin-bottom: 24px;
  letter-spacing: -0.035em;
}

.hero-title--accent {
  background: linear-gradient(135deg, #3182F6 0%, #60AAFF 60%, #A8D5FF 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-desc {
  font-size: clamp(1rem, 2.2vw, 1.125rem);
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: 44px;
  line-height: 1.85;
  font-weight: 400;
}

.hero-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

/* Scroll down arrow */
.scroll-down {
  position: absolute;
  bottom: 36px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
}

.scroll-down__arrow {
  display: block;
  width: 24px;
  height: 24px;
  border-right: 2px solid rgba(255, 255, 255, 0.4);
  border-bottom: 2px solid rgba(255, 255, 255, 0.4);
  transform: rotate(45deg);
  animation: bounce 1.8s ease-in-out infinite;
}

@keyframes bounce {
  0%, 100% { transform: rotate(45deg) translateY(0); opacity: 0.5; }
  50%       { transform: rotate(45deg) translateY(8px); opacity: 1; }
}

/* ====================================================
   BUTTONS
   ==================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 13px 26px;
  font-size: 0.9375rem;
  font-weight: 700;
  border-radius: var(--radius-md);
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition), color var(--transition);
  white-space: nowrap;
  letter-spacing: -0.01em;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn--primary {
  background: var(--color-accent);
  color: #fff;
  box-shadow: 0 4px 16px var(--color-accent-glow);
}
.btn--primary:hover {
  background: var(--color-accent-hover);
  box-shadow: 0 8px 24px rgba(49, 130, 246, 0.38);
}

.btn--outline {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  border: 1.5px solid rgba(255, 255, 255, 0.35);
  backdrop-filter: blur(8px);
}
.btn--outline:hover {
  background: rgba(255, 255, 255, 0.18);
  border-color: rgba(255, 255, 255, 0.65);
}

.btn--full { width: 100%; justify-content: center; }

/* ====================================================
   SECTION COMMONS
   ==================================================== */
.section { padding: 120px 0; }

.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 14px;
}

.section-title {
  font-size: clamp(1.875rem, 4vw, 2.75rem);
  font-weight: 900;
  color: var(--color-primary);
  letter-spacing: -0.03em;
  margin-bottom: 16px;
  line-height: 1.2;
}

.section-desc {
  font-size: 1.0625rem;
  color: var(--color-text-muted);
  line-height: 1.85;
  font-weight: 400;
}

/* ====================================================
   ABOUT
   ==================================================== */
.about { background: var(--color-surface); }

.about-intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  align-items: center;
  margin-bottom: 80px;
}

.about-intro__title {
  font-size: clamp(1.75rem, 3vw, 2.375rem);
  font-weight: 900;
  color: var(--color-primary);
  letter-spacing: -0.03em;
  line-height: 1.2;
  margin: 14px 0 18px;
}

.about-intro__desc {
  font-size: 1rem;
  color: var(--color-text-muted);
  line-height: 1.9;
  margin-bottom: 28px;
}

.about-trust {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.trust-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 6px 13px;
  background: rgba(35, 196, 94, 0.07);
  border: 1px solid rgba(35, 196, 94, 0.22);
  border-radius: var(--radius-full);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-text-sub);
  letter-spacing: -0.01em;
}
.trust-badge svg { color: var(--color-success); flex-shrink: 0; }

/* --- Accent card --- */
.about-intro__right { position: relative; }

.about-accent-card {
  position: relative;
  background: linear-gradient(140deg, #0D1B2E 0%, #12284F 60%, #0B1F45 100%);
  border-radius: var(--radius-xl);
  padding: 52px 44px;
  overflow: hidden;
  min-height: 340px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  box-shadow: var(--shadow-lg);
}

.about-accent-card__bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 55% at 80% 20%, rgba(49, 130, 246, 0.28) 0%, transparent 60%),
    radial-gradient(ellipse 45% 45% at 10% 85%, rgba(107, 92, 231, 0.16) 0%, transparent 55%);
  pointer-events: none;
}

.about-accent-card__icon {
  position: absolute;
  top: 32px;
  right: 32px;
  color: rgba(255, 255, 255, 0.12);
}

.about-accent-card__label {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(97, 170, 255, 0.8);
  margin-bottom: 14px;
}

.about-accent-card__slogan {
  font-size: clamp(1.5rem, 2.5vw, 2.1rem);
  font-weight: 900;
  color: #fff;
  line-height: 1.25;
  letter-spacing: -0.025em;
}

/* --- Values rows --- */
.about-values {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--color-border);
}

.value-row {
  display: grid;
  grid-template-columns: 64px 1fr 52px;
  align-items: center;
  gap: 32px;
  padding: 32px 0;
  border-bottom: 1px solid var(--color-border);
  transition: all var(--transition);
  border-radius: 0;
}
.value-row:hover {
  background: var(--color-bg-alt);
  padding-left: 20px;
  padding-right: 20px;
  margin: 0 -20px;
  border-radius: var(--radius-md);
  border-bottom-color: transparent;
}

.value-num {
  font-size: 2rem;
  font-weight: 900;
  color: var(--color-accent);
  letter-spacing: -0.05em;
  opacity: 0.22;
  line-height: 1;
  transition: opacity var(--transition);
  font-variant-numeric: tabular-nums;
}
.value-row:hover .value-num { opacity: 1; }

.value-body h3 {
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 5px;
  letter-spacing: -0.01em;
}

.value-body p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.75;
}

.value-icon {
  width: 48px;
  height: 48px;
  background: var(--color-accent-soft);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent);
  flex-shrink: 0;
  transition: background var(--transition), color var(--transition);
}
.value-row:hover .value-icon {
  background: var(--color-accent);
  color: #fff;
}

/* ====================================================
   SERVICES
   ==================================================== */
.services { background: var(--color-bg); }

.service-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
  margin-bottom: 100px;
}
.service-row:last-of-type { margin-bottom: 0; }

.service-row--reverse { direction: rtl; }
.service-row--reverse > * { direction: ltr; }

.service-media { position: relative; }

/* Service screenshot (real image) */
.service-screenshot {
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  line-height: 0;
}

.service-screenshot__img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 0;
}

/* App screenshot — portrait / mobile */
.service-media--app {
  display: flex;
  justify-content: center;
  align-items: center;
}

.service-screenshot--app {
  max-width: 300px;
  width: 100%;
  border-radius: 32px;
}

@media (max-width: 900px) {
  .service-screenshot--app { max-width: 240px; }
}

@media (max-width: 640px) {
  .service-screenshot--app { max-width: 200px; }
}

/* IMAGE PLACEHOLDER styles */
.img-placeholder {
  aspect-ratio: 16 / 10;
  background: linear-gradient(145deg, #EBF3FE 0%, #DDEEFF 100%);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-xl);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  color: var(--color-text-muted);
  text-align: center;
  padding: 32px;
  box-shadow: var(--shadow-sm);
}

.img-placeholder--app {
  aspect-ratio: 9 / 16;
  max-width: 260px;
  margin: 0 auto;
}

.img-placeholder svg { color: var(--color-accent); opacity: 0.5; }
.img-placeholder span { font-size: 0.9rem; font-weight: 600; color: var(--color-text-sub); }
.img-placeholder small { font-size: 0.76rem; color: var(--color-text-hint); }

.service-type {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 12px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  border-radius: var(--radius-full);
  margin-bottom: 16px;
}

.service-type--web {
  background: var(--color-accent-soft);
  color: var(--color-accent);
  border: 1px solid rgba(49, 130, 246, 0.25);
}

.service-type--app {
  background: rgba(107, 92, 231, 0.09);
  color: var(--color-purple);
  border: 1px solid rgba(107, 92, 231, 0.25);
}

.service-header-line {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
}

.service-badge-dev {
  display: inline-flex;
  align-items: center;
  height: 24px;
  padding: 0 10px;
  border-radius: var(--radius-full);
  background: #F04452;
  color: #fff;
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.service-name {
  font-size: clamp(1.625rem, 3vw, 2.25rem);
  font-weight: 900;
  color: var(--color-primary);
  letter-spacing: -0.03em;
  margin-bottom: 18px;
  line-height: 1.15;
}

.service-name--en {
  color: var(--color-text-hint);
  font-size: 0.65em;
  font-weight: 500;
}

.service-desc {
  font-size: 1rem;
  color: var(--color-text-muted);
  line-height: 1.85;
  margin-bottom: 24px;
}

.service-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-bottom: 28px;
}

.tag {
  padding: 5px 13px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--color-text-sub);
  letter-spacing: -0.01em;
}

.service-info-toss {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--color-accent);
  background: var(--color-accent-soft);
  border: 1px solid rgba(49, 130, 246, 0.18);
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  margin-bottom: 24px;
  letter-spacing: -0.01em;
}

/* Service card (light surface, toss style) */
.service-info {
  padding: 40px;
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-xs);
}

/* ====================================================
   STATS
   ==================================================== */
.stats {
  background: #0D1B2E;
  position: relative;
  overflow: hidden;
}

.stats::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 70% at 80% 10%, rgba(49, 130, 246, 0.18) 0%, transparent 60%),
    radial-gradient(ellipse 40% 50% at 10% 90%, rgba(107, 92, 231, 0.12) 0%, transparent 55%);
  pointer-events: none;
}

.stats .section-title { color: #fff; }
.stats .section-label { color: rgba(97, 170, 255, 0.85); }

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  position: relative;
  z-index: 1;
}

.stat-card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: var(--radius-xl);
  padding: 44px 24px;
  text-align: center;
  transition: background var(--transition), transform var(--transition), border-color var(--transition);
  backdrop-filter: blur(8px);
}
.stat-card:hover {
  background: rgba(49, 130, 246, 0.1);
  border-color: rgba(49, 130, 246, 0.3);
  transform: translateY(-4px);
}

.stat-number {
  display: inline-block;
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 900;
  color: #fff;
  letter-spacing: -0.04em;
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.stat-unit {
  display: inline-block;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-accent);
  margin-left: 2px;
  line-height: 1;
  vertical-align: bottom;
  padding-bottom: 4px;
}

.stat-label {
  margin-top: 14px;
  font-size: 0.84rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.5);
  letter-spacing: -0.01em;
  line-height: 1.5;
}

/* ====================================================
   CONTACT
   ==================================================== */
.contact { background: var(--color-bg-alt); }

.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1.7fr;
  gap: 56px;
  align-items: start;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 22px;
  background: var(--color-surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  margin-bottom: 14px;
  transition: border-color var(--transition), box-shadow var(--transition);
  box-shadow: var(--shadow-xs);
}
.contact-item:hover {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-glow);
}

.contact-icon {
  width: 42px;
  height: 42px;
  background: var(--color-accent-soft);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent);
  flex-shrink: 0;
}

.contact-label {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-text-hint);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 3px;
}

.contact-value {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-primary);
  transition: color var(--transition);
  letter-spacing: -0.01em;
}
.contact-value:hover { color: var(--color-accent); }

/* Contact side info card */
.contact-info-card {
  background: linear-gradient(140deg, #0D1B2E 0%, #12284F 100%);
  border-radius: var(--radius-xl);
  padding: 32px;
  margin-top: 24px;
  position: relative;
  overflow: hidden;
}
.contact-info-card::before {
  content: '';
  position: absolute;
  top: -30%;
  right: -20%;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(49,130,246,0.22) 0%, transparent 70%);
  pointer-events: none;
}
.contact-info-card p {
  font-size: 0.875rem;
  color: rgba(255,255,255,0.55);
  line-height: 1.75;
  position: relative;
  z-index: 1;
}
.contact-info-card strong {
  display: block;
  font-size: 1rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
  letter-spacing: -0.01em;
  position: relative;
  z-index: 1;
}

/* Form */
.contact-form {
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  padding: 44px 40px;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}

.form-group {
  margin-bottom: 18px;
}

.form-group label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--color-text-sub);
  margin-bottom: 7px;
  letter-spacing: -0.01em;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 13px 16px;
  background: var(--color-bg-alt);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  color: var(--color-text);
  transition: border-color var(--transition), box-shadow var(--transition), background var(--transition);
  outline: none;
  appearance: none;
  -webkit-appearance: none;
  letter-spacing: -0.01em;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--color-text-hint);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--color-accent);
  background: var(--color-surface);
  box-shadow: 0 0 0 3px var(--color-accent-glow);
}

.form-group select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%238B95A1' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 40px;
  cursor: pointer;
}

.form-group textarea { resize: vertical; min-height: 120px; }

.form-note {
  margin-top: 12px;
  font-size: 0.76rem;
  color: var(--color-text-hint);
  text-align: center;
}

/* ====================================================
   FOOTER
   ==================================================== */
.footer {
  background: #0D1B2E;
  color: rgba(255, 255, 255, 0.55);
  padding: 72px 0 40px;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: 64px;
  padding-bottom: 56px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  margin-bottom: 36px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 1.125rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 10px;
  letter-spacing: -0.02em;
  transition: opacity var(--transition);
}
.footer-logo:hover { opacity: 0.75; }

.footer-tagline {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.45);
  margin-bottom: 18px;
}

.footer-legal {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
  font-size: 0.79rem;
  color: rgba(255, 255, 255, 0.3);
}

.footer-links-group {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.footer-links-col h4 {
  font-size: 0.76rem;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.9);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 14px;
}

.footer-links-col ul { display: flex; flex-direction: column; gap: 9px; }

.footer-links-col a {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.42);
  transition: color var(--transition);
  letter-spacing: -0.01em;
}
.footer-links-col a:hover { color: rgba(255, 255, 255, 0.85); }

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}

.footer-copy {
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.32);
}

.footer-copy--sub {
  font-size: 0.76rem;
  color: rgba(255, 255, 255, 0.2);
}

/* ====================================================
   SCROLL ANIMATIONS
   ==================================================== */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.65s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.65s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.about-values .value-row:nth-child(1) { transition-delay: 0s; }
.about-values .value-row:nth-child(2) { transition-delay: 0.1s; }
.about-values .value-row:nth-child(3) { transition-delay: 0.2s; }

.stats-grid .stat-card:nth-child(1) { transition-delay: 0s; }
.stats-grid .stat-card:nth-child(2) { transition-delay: 0.08s; }
.stats-grid .stat-card:nth-child(3) { transition-delay: 0.16s; }
.stats-grid .stat-card:nth-child(4) { transition-delay: 0.24s; }

/* ====================================================
   RESPONSIVE — Tablet (≤900px)
   ==================================================== */
@media (max-width: 900px) {
  .section { padding: 96px 0; }

  /* About */
  .about-intro {
    grid-template-columns: 1fr;
    gap: 32px;
    margin-bottom: 56px;
  }
  .about-accent-card {
    min-height: 220px;
    padding: 36px 32px;
  }

  /* Services */
  .service-row,
  .service-row--reverse {
    grid-template-columns: 1fr;
    gap: 28px;
    direction: ltr;
    margin-bottom: 56px;
  }
  .service-info { padding: 28px; }
  .service-media--app { margin: 0 auto; max-width: 260px; }

  /* Stats */
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }

  /* Contact */
  .contact-layout {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  /* Footer */
  .footer-top {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  .footer-links-group { grid-template-columns: repeat(3, 1fr); }
}

/* ====================================================
   RESPONSIVE — Mobile (≤640px)
   ==================================================== */
@media (max-width: 640px) {
  :root { --nav-height: 58px; }

  .section { padding: 64px 0; }
  .container { padding: 0 20px; }

  /* ── Nav ── */
  .nav-links {
    position: fixed;
    top: var(--nav-height);
    left: 0; right: 0;
    background: rgba(255, 255, 255, 0.97);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    flex-direction: column;
    align-items: stretch;
    padding: 12px 20px 24px;
    gap: 2px;
    box-shadow: var(--shadow-md);
    border-bottom: 1px solid var(--color-border);
    transform: translateY(-110%);
    visibility: hidden;
    pointer-events: none;
    transition: transform var(--transition), visibility var(--transition);
    z-index: 999;
  }
  .nav-links.open {
    transform: translateY(0);
    visibility: visible;
    pointer-events: auto;
  }
  .nav-link {
    padding: 12px 14px;
    font-size: 0.9375rem;
    border-radius: var(--radius-sm);
    color: var(--color-text-sub);
  }
  .nav-link--cta { text-align: center; margin-top: 12px; margin-left: 0; }
  .lang-toggle { min-width: 48px; height: 32px; padding: 0 10px; font-size: 0.75rem; }
  .hamburger { display: flex; }

  /* ── Hero ── */
  .hero-content { padding: 40px 20px 56px; }
  .hero-title { font-size: clamp(2rem, 9vw, 2.8rem); letter-spacing: -0.025em; }
  .hero-desc { font-size: 0.9375rem; margin-bottom: 32px; }
  .hero-badge { font-size: 0.75rem; margin-bottom: 24px; }
  .hero-actions { flex-direction: column; align-items: center; gap: 10px; }
  .btn { width: 100%; max-width: 300px; justify-content: center; padding: 12px 20px; }

  /* ── About ── */
  .about-intro { gap: 24px; margin-bottom: 40px; }
  .about-intro__title { font-size: 1.5rem; margin: 10px 0 14px; }
  .about-accent-card { min-height: auto; padding: 28px 24px; }
  .about-accent-card__slogan { font-size: 1.3rem; }
  .about-trust { gap: 6px; }
  .trust-badge { font-size: 0.76rem; padding: 5px 10px; }
  .value-row {
    grid-template-columns: 44px 1fr 40px;
    gap: 12px;
    padding: 20px 0;
  }
  .value-num { font-size: 1.5rem; }
  .value-body h3 { font-size: 1rem; }
  .value-body p { font-size: 0.85rem; }
  .value-icon { width: 40px; height: 40px; }

  /* ── Services ── */
  .section-header { margin-bottom: 40px; }
  .service-row { margin-bottom: 40px; }
  .service-row:last-of-type { margin-bottom: 0; }
  .service-info { padding: 20px; }
  .service-name { font-size: 1.5rem; margin-bottom: 12px; }
  .service-desc { font-size: 0.9rem; margin-bottom: 18px; }
  .service-tags { gap: 6px; margin-bottom: 20px; }
  .tag { font-size: 0.74rem; padding: 4px 10px; }
  .service-header-line { margin-bottom: 10px; }
  .service-screenshot { border-radius: var(--radius-lg); }
  .service-screenshot--app { max-width: 200px; border-radius: var(--radius-lg); }
  .service-media--app { max-width: 200px; }

  /* ── Stats ── */
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .stat-card { padding: 28px 12px; border-radius: var(--radius-lg); }
  .stat-number { font-size: clamp(1.75rem, 8vw, 2.5rem); }
  .stat-unit { font-size: 1.1rem; }
  .stat-label { font-size: 0.78rem; margin-top: 10px; }

  /* ── Contact ── */
  .contact-form { padding: 24px 16px; border-radius: var(--radius-lg); }
  .contact-info-card { padding: 24px; border-radius: var(--radius-lg); }
  .form-group { margin-bottom: 14px; }
  .form-group input,
  .form-group select,
  .form-group textarea { padding: 11px 14px; font-size: 0.9rem; }

  /* ── Footer ── */
  .footer { padding: 48px 0 28px; }
  .footer-top { gap: 28px; padding-bottom: 36px; margin-bottom: 24px; }
  .footer-links-group { grid-template-columns: repeat(2, 1fr); gap: 20px 16px; }
  .footer-links-col h4 { margin-bottom: 10px; }
  .footer-links-col ul { gap: 7px; }
  .footer-links-col a { font-size: 0.82rem; }
  .footer-bottom { flex-direction: column; align-items: flex-start; gap: 4px; }
  .footer-legal { flex-direction: column; align-items: flex-start; gap: 3px; }
  .footer-legal span:nth-child(2) { display: none; }

  /* ── Typography ── */
  .section-title { font-size: clamp(1.5rem, 6vw, 2rem); letter-spacing: -0.02em; }
  .section-desc { font-size: 0.9375rem; }
}

/* ====================================================
   RESPONSIVE — Small phone (≤390px)
   ==================================================== */
@media (max-width: 390px) {
  .stats-grid { grid-template-columns: 1fr; gap: 10px; }
  .stat-card { padding: 24px 16px; }
  .footer-links-group { grid-template-columns: 1fr; gap: 16px; }
  .hero-title { font-size: clamp(1.75rem, 9vw, 2.2rem); }
  .service-info { padding: 16px; }
}