/* ============================================================
   US4 LABS — INSTITUTIONAL SITE
   Design System: Navy · White · Silver · Electric Blue
   ============================================================ */

/* ── RESET & BASE ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --navy:        #0B1E3D;
  --navy-deep:   #071529;
  --navy-mid:    #132A52;
  --navy-light:  #1A3A6B;
  --blue:        #1E5FBF;
  --blue-accent: #2D7DD2;
  --blue-light:  #4A9FE8;
  --silver:      #C8D4E0;
  --silver-light:#E8EEF4;
  --white:       #FFFFFF;
  --off-white:   #F7F9FC;
  --graphite:    #3A4A5C;
  --text-dark:   #0D1B2A;
  --text-mid:    #3A4A5C;
  --text-light:  #6B7A8D;
  --border:      rgba(11,30,61,0.10);
  --border-light:rgba(255,255,255,0.12);
  --shadow-sm:   0 2px 8px rgba(11,30,61,0.08);
  --shadow-md:   0 8px 32px rgba(11,30,61,0.12);
  --shadow-lg:   0 20px 60px rgba(11,30,61,0.18);
  --shadow-xl:   0 32px 80px rgba(11,30,61,0.24);
  --radius-sm:   8px;
  --radius-md:   14px;
  --radius-lg:   20px;
  --radius-xl:   28px;
  --font-sans:   'Inter', system-ui, -apple-system, sans-serif;
  --font-display:'Montserrat', 'Inter', sans-serif;
  --transition:  0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  font-family: var(--font-sans);
  color: var(--text-dark);
  background: var(--white);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

/* ── TYPOGRAPHY ── */
h1, h2, h3, h4, h5 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.15;
  color: var(--navy);
}

/* ── UTILITY CLASSES ── */
.section-container { max-width: 1280px; margin: 0 auto; padding: 0 2rem; }
.section-eyebrow {
  display: inline-flex; align-items: center; gap: 0.5rem;
  font-size: 0.75rem; font-weight: 700; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--blue-accent);
  margin-bottom: 1rem;
}
.section-eyebrow.light { color: var(--blue-light); }
.section-title { font-size: clamp(1.75rem, 3vw, 2.5rem); margin-bottom: 1rem; }
.section-subtitle { font-size: 1.05rem; color: var(--text-mid); max-width: 640px; line-height: 1.7; }
.section-header { text-align: center; margin-bottom: 3.5rem; }
.section-header .section-subtitle { margin: 0 auto; }

/* ── BUTTONS ── */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 0.5rem; padding: 0.875rem 2rem;
  font-family: var(--font-display); font-size: 0.875rem; font-weight: 700;
  letter-spacing: 0.04em; border-radius: var(--radius-sm);
  transition: var(--transition); white-space: nowrap;
}
.btn-primary {
  background: var(--blue); color: var(--white);
  box-shadow: 0 4px 20px rgba(30,95,191,0.35);
}
.btn-primary:hover {
  background: var(--blue-accent);
  box-shadow: 0 6px 28px rgba(30,95,191,0.50);
  transform: translateY(-2px);
}
.btn-secondary {
  background: transparent; color: var(--white);
  border: 1.5px solid rgba(255,255,255,0.55);
}
.btn-secondary:hover {
  background: rgba(255,255,255,0.12);
  border-color: rgba(255,255,255,0.85);
  transform: translateY(-2px);
}
.btn-outline {
  background: transparent; color: var(--navy);
  border: 1.5px solid var(--navy-light);
}
.btn-outline:hover {
  background: var(--navy); color: var(--white);
  transform: translateY(-2px);
}
.btn-white {
  background: var(--white); color: var(--navy);
  box-shadow: 0 4px 20px rgba(0,0,0,0.15);
}
.btn-white:hover {
  background: var(--silver-light);
  transform: translateY(-2px);
}
.btn-large { padding: 1.125rem 2.75rem; font-size: 1rem; }

/* ── NAVBAR ── */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(7,21,41,0.92);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--border-light);
  transition: var(--transition);
}
.navbar.scrolled {
  background: rgba(7,21,41,0.98);
  box-shadow: var(--shadow-md);
}
.nav-container {
  max-width: 1280px; margin: 0 auto; padding: 0 2rem;
  display: flex; align-items: center; justify-content: space-between;
  height: 72px;
}
.nav-logo {
  display: flex; flex-direction: column; align-items: flex-start;
  font-family: var(--font-display); font-weight: 900;
  line-height: 1; gap: 0; text-decoration: none;
  position: relative;
}
.logo-us4 {
  font-size: 1.55rem; font-weight: 900;
  color: var(--white);
  letter-spacing: -0.01em;
  line-height: 1;
  /* Blue gradient to match the brand */
  background: linear-gradient(135deg, #FFFFFF 0%, #C8D8F0 60%, #A0BDE0 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: inline-flex; align-items: baseline; gap: 0.15rem;
}
.logo-tm {
  font-size: 0.55rem; font-weight: 700;
  -webkit-text-fill-color: rgba(200,216,240,0.7);
  color: rgba(200,216,240,0.7);
  align-self: flex-start; margin-top: 1px;
  background: none; -webkit-background-clip: unset; background-clip: unset;
}
.logo-divider {
  display: block; width: 100%; height: 1.5px;
  background: linear-gradient(90deg, rgba(200,216,240,0.8) 0%, rgba(200,216,240,0.2) 100%);
  margin: 1px 0 2px;
}
.logo-labs {
  font-size: 0.65rem; font-weight: 700; letter-spacing: 0.32em;
  color: var(--silver); text-transform: uppercase;
  -webkit-text-fill-color: var(--silver);
}

.nav-links { display: flex; align-items: center; gap: 0.25rem; }
.nav-link {
  padding: 0.5rem 0.875rem; font-size: 0.82rem; font-weight: 500;
  color: rgba(255,255,255,0.75); border-radius: var(--radius-sm);
  transition: var(--transition); letter-spacing: 0.02em;
}
.nav-link:hover, .nav-link.active { color: var(--white); background: rgba(255,255,255,0.08); }
.nav-link.nav-cta {
  background: var(--blue); color: var(--white);
  padding: 0.5rem 1.25rem; margin-left: 0.5rem;
  box-shadow: 0 2px 12px rgba(30,95,191,0.4);
}
.nav-link.nav-cta:hover { background: var(--blue-accent); }

.nav-right { display: flex; align-items: center; gap: 1.25rem; }
.lang-selector { display: flex; align-items: center; gap: 0.35rem; }
.lang-btn {
  font-size: 0.72rem; font-weight: 700; letter-spacing: 0.08em;
  color: rgba(255,255,255,0.5); padding: 0.2rem 0.4rem;
  border-radius: 4px; transition: var(--transition);
}
.lang-btn:hover, .lang-btn.active { color: var(--white); background: rgba(255,255,255,0.12); }
.lang-sep { color: rgba(255,255,255,0.2); font-size: 0.7rem; }

.nav-toggle { display: none; flex-direction: column; gap: 5px; padding: 4px; }
.nav-toggle span {
  display: block; width: 22px; height: 2px;
  background: var(--white); border-radius: 2px; transition: var(--transition);
}

/* ── HERO ── */
.hero {
  position: relative; min-height: 100vh;
  display: flex; align-items: center;
  overflow: hidden; padding-top: 72px;
}
.hero-bg {
  position: absolute; inset: 0; z-index: 0;
  overflow: hidden;
}
.hero-bg-img {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: center center;
  filter: brightness(0.45) saturate(1.2);
  /* Prevent layout shift / distortion on scroll */
  will-change: auto;
  transform: none;
}
.hero-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(
    135deg,
    rgba(7,21,41,0.92) 0%,
    rgba(11,30,61,0.75) 50%,
    rgba(19,42,82,0.60) 100%
  );
}
.hero-content {
  position: relative; z-index: 1;
  max-width: 1280px; margin: 0 auto; padding: 5rem 2rem;
  max-width: 760px; padding-left: 4rem;
}
.hero-badge {
  display: inline-flex; align-items: center; gap: 0.5rem;
  background: rgba(45,125,210,0.2); border: 1px solid rgba(45,125,210,0.4);
  color: var(--blue-light); padding: 0.4rem 1rem;
  border-radius: 100px; font-size: 0.75rem; font-weight: 700;
  letter-spacing: 0.08em; text-transform: uppercase; margin-bottom: 1.5rem;
  animation: fadeInDown 0.8s ease both;
}
.badge-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--blue-light);
  box-shadow: 0 0 6px var(--blue-light);
  animation: pulse 2s ease infinite;
}
@keyframes pulse { 0%,100%{opacity:1;transform:scale(1)} 50%{opacity:0.6;transform:scale(1.3)} }

.hero-headline {
  font-size: clamp(2.25rem, 5vw, 3.75rem);
  color: var(--white); font-weight: 900;
  line-height: 1.1; margin-bottom: 1.5rem;
  animation: fadeInUp 0.9s ease 0.1s both;
}
.hero-subheadline {
  font-size: clamp(1rem, 1.5vw, 1.15rem);
  color: rgba(255,255,255,0.78); line-height: 1.75;
  margin-bottom: 2.5rem; max-width: 580px;
  animation: fadeInUp 0.9s ease 0.2s both;
}
.hero-ctas {
  display: flex; gap: 1rem; flex-wrap: wrap;
  animation: fadeInUp 0.9s ease 0.3s both;
}
.hero-microcopy {
  margin-top: 1.25rem; font-size: 0.75rem;
  color: rgba(255,255,255,0.4); letter-spacing: 0.04em;
  animation: fadeInUp 0.9s ease 0.4s both;
}
.hero-scroll-indicator {
  position: absolute; bottom: 2.5rem; left: 50%; transform: translateX(-50%);
  z-index: 1;
}
.scroll-line {
  width: 1.5px; height: 48px; background: rgba(255,255,255,0.3);
  margin: 0 auto; position: relative; overflow: hidden;
}
.scroll-line::after {
  content: ''; position: absolute; top: -100%; left: 0; right: 0;
  height: 100%; background: var(--blue-light);
  animation: scrollDown 2s ease infinite;
}
@keyframes scrollDown { 0%{top:-100%} 100%{top:100%} }

/* ── TRUST BAR ── */
.trust-bar {
  background: var(--navy-deep);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  padding: 1.25rem 2rem;
}
.trust-container {
  max-width: 1280px; margin: 0 auto;
  display: flex; align-items: center; justify-content: center;
  gap: 0; flex-wrap: wrap;
}
.trust-item {
  display: flex; align-items: center; gap: 0.625rem;
  padding: 0.625rem 1.5rem;
  font-size: 0.78rem; font-weight: 600; letter-spacing: 0.06em;
  text-transform: uppercase; color: rgba(255,255,255,0.65);
  transition: var(--transition);
}
.trust-item:hover { color: var(--white); }
.trust-icon { width: 16px; height: 16px; color: var(--blue-light); flex-shrink: 0; }
.trust-divider { width: 1px; height: 24px; background: rgba(255,255,255,0.12); }

/* ============================================================
   PORTFOLIO SHOWCASE BANNER — MAIN FEATURE
   ============================================================ */
.portfolio-showcase {
  background: linear-gradient(160deg, #F4F7FC 0%, #EBF1FA 35%, #E4EDF8 65%, var(--silver-light) 100%);
  padding: 5.5rem 2rem;
  position: relative;
  overflow: hidden;
  border-top: 1px solid rgba(11,30,61,0.06);
  border-bottom: 1px solid rgba(11,30,61,0.06);
}
.portfolio-showcase::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; bottom: 0;
  background:
    radial-gradient(ellipse 60% 50% at 80% 50%, rgba(30,95,191,0.06) 0%, transparent 70%),
    radial-gradient(ellipse 40% 60% at 10% 80%, rgba(11,30,61,0.04) 0%, transparent 60%);
  pointer-events: none;
}

.showcase-container {
  max-width: 1320px; margin: 0 auto;
  display: grid; grid-template-columns: 1fr 1.2fr;
  gap: 4.5rem; align-items: center;
  position: relative; z-index: 1;
}

/* Showcase — Left Content */
.showcase-content { padding-right: 1rem; }

.showcase-eyebrow {
  display: flex; align-items: center; gap: 0.75rem;
  margin-bottom: 1.25rem;
}
.eyebrow-line {
  display: block; width: 32px; height: 2px;
  background: linear-gradient(90deg, var(--blue), var(--blue-accent));
  border-radius: 2px;
}
.eyebrow-text {
  font-size: 0.72rem; font-weight: 800; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--blue);
}

.showcase-title {
  font-size: clamp(2rem, 3.5vw, 3rem);
  color: var(--navy); font-weight: 900;
  line-height: 1.1; margin-bottom: 1.25rem;
}

.showcase-subtitle {
  font-size: 1rem; color: var(--text-mid);
  line-height: 1.75; margin-bottom: 2.25rem;
  max-width: 480px;
}

/* Portfolio Categories List */
.showcase-categories {
  display: flex; flex-direction: column; gap: 0.875rem;
  margin-bottom: 2.5rem;
}
.category-item {
  display: flex; align-items: center; gap: 1rem;
  padding: 0.875rem 1.25rem;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  cursor: default;
  opacity: 0; transform: translateX(-20px);
}
.category-item.animated {
  opacity: 1; transform: translateX(0);
  transition: opacity 0.5s ease var(--delay), transform 0.5s ease var(--delay),
              box-shadow 0.3s ease, border-color 0.3s ease;
}
.category-item:hover {
  border-color: rgba(30,95,191,0.25);
  box-shadow: 0 4px 20px rgba(30,95,191,0.10);
  transform: translateX(4px);
}
.category-icon {
  width: 38px; height: 38px; flex-shrink: 0;
  background: linear-gradient(135deg, rgba(30,95,191,0.10), rgba(45,125,210,0.15));
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
}
.category-icon svg { width: 18px; height: 18px; color: var(--blue); }
.category-text { display: flex; flex-direction: column; gap: 0.15rem; }
.category-name { font-size: 0.875rem; font-weight: 700; color: var(--navy); }
.category-desc { font-size: 0.75rem; color: var(--text-light); }

/* Showcase CTAs */
.showcase-ctas {
  display: flex; gap: 1rem; flex-wrap: wrap;
  margin-bottom: 1rem;
}
.showcase-microcopy {
  font-size: 0.72rem; color: var(--text-light); letter-spacing: 0.04em;
}

/* Showcase — Right Visual */
.showcase-visual { position: relative; }

.showcase-image-wrapper {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow:
    0 4px 24px rgba(11,30,61,0.08),
    0 24px 72px rgba(11,30,61,0.18),
    0 0 0 1px rgba(11,30,61,0.06);
  /* Show only top 65% of the portrait image — the product showcase area */
  max-height: 560px;
}
.showcase-main-img {
  width: 100%;
  display: block;
  object-fit: cover;
  object-position: top center;
  max-height: 560px;
  border-radius: var(--radius-xl);
  transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}
.showcase-image-wrapper:hover .showcase-main-img {
  transform: scale(1.02);
}

/* Floating Badges */
.showcase-badge {
  position: absolute;
  display: flex; align-items: center; gap: 0.4rem;
  background: var(--white);
  border: 1px solid rgba(11,30,61,0.10);
  border-radius: 100px;
  padding: 0.45rem 0.875rem;
  font-size: 0.7rem; font-weight: 700;
  color: var(--navy); letter-spacing: 0.04em;
  box-shadow: 0 4px 16px rgba(11,30,61,0.14);
  white-space: nowrap;
  opacity: 0; transform: scale(0.8);
  transition: opacity 0.4s ease var(--delay), transform 0.4s ease var(--delay);
  z-index: 10;
}
.showcase-badge.animated { opacity: 1; transform: scale(1); }
.showcase-badge svg { width: 13px; height: 13px; color: var(--blue); }

.badge-top-left    { top: -14px; left: 20px; }
.badge-top-right   { top: -14px; right: 20px; }
.badge-bottom-left { bottom: -14px; left: 20px; }
.badge-bottom-right{ bottom: -14px; right: 20px; }

/* Presentation Systems Strip */
.showcase-systems-strip {
  display: grid; grid-template-columns: repeat(6, 1fr);
  gap: 0.5rem; margin-top: 1.75rem;
}
.system-item {
  display: flex; flex-direction: column; align-items: center; gap: 0.4rem;
  padding: 0.75rem 0.5rem;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  cursor: default;
}
.system-item:hover {
  border-color: rgba(30,95,191,0.25);
  box-shadow: 0 4px 16px rgba(30,95,191,0.10);
  transform: translateY(-3px);
}
.system-icon {
  width: 32px; height: 32px;
  background: linear-gradient(135deg, rgba(30,95,191,0.08), rgba(45,125,210,0.12));
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
}
.system-icon svg { width: 16px; height: 16px; color: var(--blue); }
.system-item span {
  font-size: 0.65rem; font-weight: 600; color: var(--text-mid);
  text-align: center; line-height: 1.3;
}

/* ── PORTFOLIO OVERVIEW ── */
.portfolio-overview { padding: 6rem 0; background: var(--white); }
.portfolio-cards {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.portfolio-card {
  border-radius: var(--radius-lg); overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  background: var(--white);
  opacity: 0; transform: translateY(24px);
}
.portfolio-card.animated {
  opacity: 1; transform: translateY(0);
  transition: opacity 0.5s ease var(--delay), transform 0.5s ease var(--delay),
              box-shadow 0.3s ease;
}
.portfolio-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-6px);
}
.card-image { position: relative; overflow: hidden; aspect-ratio: 4/3; }
.card-image img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s ease; }
.portfolio-card:hover .card-image img { transform: scale(1.05); }
.card-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(0deg, rgba(11,30,61,0.75) 0%, transparent 60%);
  display: flex; align-items: flex-end; justify-content: center;
  padding-bottom: 1.25rem; opacity: 0; transition: var(--transition);
}
.portfolio-card:hover .card-overlay { opacity: 1; }
.card-cta {
  font-size: 0.78rem; font-weight: 700; color: var(--white);
  letter-spacing: 0.06em; text-transform: uppercase;
  border: 1.5px solid rgba(255,255,255,0.6);
  padding: 0.4rem 1rem; border-radius: 100px;
}
.card-content { padding: 1.25rem 1.5rem 1.5rem; }
.card-tag {
  display: inline-block; font-size: 0.68rem; font-weight: 700;
  letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--blue); background: rgba(30,95,191,0.08);
  padding: 0.2rem 0.6rem; border-radius: 4px; margin-bottom: 0.6rem;
}
.card-title { font-size: 1.1rem; color: var(--navy); margin-bottom: 0.5rem; }
.card-desc { font-size: 0.85rem; color: var(--text-mid); line-height: 1.6; }

/* ── PRESENTATION SYSTEMS SECTION ── */
.presentation-systems-section {
  background: linear-gradient(160deg, var(--navy-deep) 0%, var(--navy) 60%, var(--navy-mid) 100%);
  padding: 6rem 0;
  position: relative; overflow: hidden;
}
.presentation-systems-section::before {
  content: '';
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 50% 60% at 90% 20%, rgba(30,95,191,0.15) 0%, transparent 60%),
    radial-gradient(ellipse 40% 50% at 10% 80%, rgba(45,125,210,0.08) 0%, transparent 60%);
  pointer-events: none;
}
.systems-inner {
  display: grid; grid-template-columns: 1fr 1.5fr;
  gap: 5rem; align-items: center; position: relative; z-index: 1;
}
.systems-text .section-title.light { color: var(--white); }
.systems-text .section-subtitle.light { color: rgba(255,255,255,0.70); margin-bottom: 2.5rem; }
.systems-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}
.system-card {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.10);
  border-radius: var(--radius-md);
  padding: 1.5rem 1.25rem;
  transition: var(--transition);
}
.system-card:hover {
  background: rgba(255,255,255,0.10);
  border-color: rgba(255,255,255,0.20);
  transform: translateY(-4px);
}
.system-card-icon {
  width: 44px; height: 44px;
  background: rgba(45,125,210,0.20);
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 1rem;
}
.system-card-icon svg { width: 22px; height: 22px; color: var(--blue-light); }
.system-card h4 { font-size: 0.9rem; color: var(--white); margin-bottom: 0.4rem; }
.system-card p { font-size: 0.78rem; color: rgba(255,255,255,0.55); line-height: 1.6; }

/* ── DOCUMENTATION SECTION ── */
.documentation-section { padding: 6rem 0; background: var(--off-white); }
.docs-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem; margin-bottom: 3rem;
}
.doc-card {
  background: var(--white); border: 1px solid var(--border);
  border-radius: var(--radius-md); padding: 2rem 1.5rem;
  box-shadow: var(--shadow-sm); transition: var(--transition);
  opacity: 0; transform: translateY(20px);
}
.doc-card.animated {
  opacity: 1; transform: translateY(0);
  transition: opacity 0.5s ease var(--delay), transform 0.5s ease var(--delay),
              box-shadow 0.3s ease;
}
.doc-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
  border-color: rgba(30,95,191,0.15);
}
.doc-card-icon {
  width: 48px; height: 48px;
  background: linear-gradient(135deg, rgba(30,95,191,0.08), rgba(45,125,210,0.12));
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 1.25rem;
}
.doc-card-icon svg { width: 24px; height: 24px; color: var(--blue); }
.doc-card h4 { font-size: 1rem; color: var(--navy); margin-bottom: 0.5rem; }
.doc-card p { font-size: 0.85rem; color: var(--text-mid); line-height: 1.6; }
.docs-image-row {
  border-radius: var(--radius-lg); overflow: hidden;
  box-shadow: var(--shadow-lg);
  max-height: 480px;
}
.docs-image-row img { width: 100%; height: 100%; object-fit: cover; object-position: top; }

/* ── APPLICATION GUIDE SECTION ── */
.appguide-section { padding: 6rem 0; background: var(--white); }
.carousel-wrapper { position: relative; margin-bottom: 1.5rem; }
.carousel { overflow: hidden; border-radius: var(--radius-xl); box-shadow: var(--shadow-xl); }
.carousel-track {
  display: flex; transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}
.carousel-slide { min-width: 100%; }
.carousel-slide img { width: 100%; display: block; }
.carousel-btn {
  position: absolute; top: 50%; transform: translateY(-50%);
  width: 48px; height: 48px;
  background: var(--white); border-radius: 50%;
  box-shadow: var(--shadow-md);
  display: flex; align-items: center; justify-content: center;
  transition: var(--transition); z-index: 10;
}
.carousel-btn:hover { background: var(--navy); }
.carousel-btn:hover svg { color: var(--white); }
.carousel-btn svg { width: 20px; height: 20px; color: var(--navy); }
.carousel-prev { left: -24px; }
.carousel-next { right: -24px; }
.carousel-dots {
  display: flex; justify-content: center; gap: 0.5rem;
  margin-top: 1.25rem;
}
.dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--silver); transition: var(--transition);
}
.dot.active { background: var(--blue); width: 24px; border-radius: 4px; }
.carousel-labels {
  display: flex; justify-content: center; gap: 1.5rem;
  margin-top: 0.75rem;
}
.carousel-label {
  font-size: 0.78rem; font-weight: 600; color: var(--text-light);
  cursor: pointer; transition: var(--transition); padding: 0.25rem 0.5rem;
  border-radius: 4px;
}
.carousel-label.active { color: var(--blue); background: rgba(30,95,191,0.08); }
.carousel-fullscreen {
  display: flex; align-items: center; gap: 0.5rem;
  margin: 1rem auto 0; padding: 0.5rem 1.25rem;
  border: 1.5px solid var(--border); border-radius: 100px;
  font-size: 0.78rem; font-weight: 600; color: var(--text-mid);
  transition: var(--transition);
}
.carousel-fullscreen:hover { border-color: var(--blue); color: var(--blue); }
.carousel-fullscreen svg { width: 16px; height: 16px; }
.appguide-disclaimer {
  text-align: center; font-size: 0.78rem; color: var(--text-light);
  max-width: 680px; margin: 0 auto; line-height: 1.7;
  padding: 1rem 1.5rem;
  background: var(--off-white); border-radius: var(--radius-md);
  border: 1px solid var(--border);
}

/* ── FINAL CTA ── */
.final-cta-section {
  background: linear-gradient(135deg, var(--navy-deep) 0%, var(--navy) 100%);
  padding: 6rem 2rem;
  position: relative; overflow: hidden;
}
.final-cta-section::before {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(ellipse 60% 80% at 50% 50%, rgba(30,95,191,0.15) 0%, transparent 70%);
  pointer-events: none;
}
.final-cta-inner {
  text-align: center; position: relative; z-index: 1;
  max-width: 720px; margin: 0 auto;
}
.final-cta-title {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  color: var(--white); margin-bottom: 1rem;
}
.final-cta-subtitle {
  font-size: 1.05rem; color: rgba(255,255,255,0.65);
  margin-bottom: 2.5rem; line-height: 1.7;
}
.final-cta-microcopy {
  margin-top: 1.25rem; font-size: 0.75rem;
  color: rgba(255,255,255,0.35); letter-spacing: 0.04em;
}

/* ── FOOTER ── */
.footer {
  background: var(--navy-deep);
  border-top: 1px solid rgba(255,255,255,0.06);
}
.footer-container { max-width: 1280px; margin: 0 auto; padding: 0 2rem; }
.footer-top {
  display: grid; grid-template-columns: 280px 1fr;
  gap: 4rem; padding: 4rem 0 3rem;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.footer-logo {
  display: flex; flex-direction: column; align-items: flex-start;
  font-family: var(--font-display); font-weight: 900;
  line-height: 1; gap: 0; text-decoration: none;
  margin-bottom: 0.75rem;
}
.footer-tagline {
  font-size: 0.7rem; letter-spacing: 0.14em; text-transform: uppercase;
  color: rgba(255,255,255,0.35); margin-bottom: 1rem;
}
.footer-desc { font-size: 0.85rem; color: rgba(255,255,255,0.45); line-height: 1.7; }
.footer-nav { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; }
.footer-nav-col { display: flex; flex-direction: column; gap: 0.6rem; }
.footer-nav-col h5 {
  font-size: 0.72rem; font-weight: 800; letter-spacing: 0.12em;
  text-transform: uppercase; color: rgba(255,255,255,0.5); margin-bottom: 0.5rem;
}
.footer-nav-col a {
  font-size: 0.85rem; color: rgba(255,255,255,0.45);
  transition: var(--transition);
}
.footer-nav-col a:hover { color: var(--white); }
.footer-disclaimer {
  padding: 2rem 0;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.footer-disclaimer p {
  font-size: 0.75rem; color: rgba(255,255,255,0.30);
  line-height: 1.8; max-width: 900px;
}
.footer-bottom {
  display: flex; align-items: center; justify-content: space-between;
  padding: 1.5rem 0;
  font-size: 0.78rem; color: rgba(255,255,255,0.3);
}
.footer-lang { display: flex; align-items: center; gap: 0.5rem; }

/* ── FULLSCREEN MODAL ── */
.fullscreen-modal {
  position: fixed; inset: 0; z-index: 9999;
  background: rgba(0,0,0,0.95);
  display: flex; align-items: center; justify-content: center;
  padding: 2rem;
  opacity: 0; pointer-events: none; transition: opacity 0.3s ease;
}
.fullscreen-modal.active { opacity: 1; pointer-events: all; }
.fullscreen-modal img { max-height: 90vh; max-width: 100%; object-fit: contain; border-radius: var(--radius-md); }
.modal-close {
  position: absolute; top: 1.5rem; right: 1.5rem;
  width: 44px; height: 44px;
  background: rgba(255,255,255,0.1); border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  transition: var(--transition);
}
.modal-close:hover { background: rgba(255,255,255,0.2); }
.modal-close svg { width: 20px; height: 20px; color: var(--white); }

/* ── ANIMATIONS ── */
@keyframes fadeInDown { from{opacity:0;transform:translateY(-16px)} to{opacity:1;transform:translateY(0)} }
@keyframes fadeInUp   { from{opacity:0;transform:translateY(20px)}  to{opacity:1;transform:translateY(0)} }

[data-animate] { opacity: 0; }
[data-animate="fade-up"]    { transform: translateY(32px); }
[data-animate="fade-right"] { transform: translateX(-32px); }
[data-animate="fade-left"]  { transform: translateX(32px); }
[data-animate="pop-in"]     { transform: scale(0.85); }

[data-animate].animated {
  opacity: 1; transform: none;
  transition: opacity 0.65s cubic-bezier(0.4,0,0.2,1) var(--delay, 0s),
              transform 0.65s cubic-bezier(0.4,0,0.2,1) var(--delay, 0s);
}

/* ── RESPONSIVE ── */
@media (max-width: 1100px) {
  .showcase-container { grid-template-columns: 1fr; gap: 3rem; }
  .showcase-content { padding-right: 0; }
  .showcase-visual { order: -1; }
  .showcase-systems-strip { grid-template-columns: repeat(3, 1fr); }
  .systems-inner { grid-template-columns: 1fr; gap: 3rem; }
  .portfolio-cards { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 900px) {
  .nav-links { display: none; flex-direction: column; gap: 0.25rem; }
  .nav-links.open {
    display: flex; position: absolute; top: 72px; left: 0; right: 0;
    background: rgba(7,21,41,0.98); padding: 1rem;
    border-bottom: 1px solid var(--border-light);
  }
  .nav-toggle { display: flex; }
  .hero-content { padding-left: 2rem; }
  .docs-grid { grid-template-columns: repeat(2, 1fr); }
  .systems-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-top { grid-template-columns: 1fr; gap: 2.5rem; }
  .footer-nav { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .trust-bar { padding: 0.75rem 1rem; }
  .trust-container { gap: 0; justify-content: flex-start; overflow-x: auto; }
  .trust-item { padding: 0.5rem 1rem; white-space: nowrap; }
  .trust-divider { display: none; }
  .portfolio-showcase { padding: 3.5rem 1.25rem; }
  .showcase-title { font-size: 1.75rem; }
  .showcase-systems-strip { grid-template-columns: repeat(3, 1fr); gap: 0.375rem; }
  .system-item { padding: 0.625rem 0.375rem; }
  .system-item span { font-size: 0.6rem; }
  .portfolio-cards { grid-template-columns: 1fr; }
  .docs-grid { grid-template-columns: 1fr; }
  .systems-grid { grid-template-columns: 1fr; }
  .carousel-prev { left: 8px; }
  .carousel-next { right: 8px; }
  .footer-nav { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: 1rem; text-align: center; }
  .hero-ctas { flex-direction: column; }
  .showcase-ctas { flex-direction: column; }
  .badge-top-left, .badge-top-right, .badge-bottom-left, .badge-bottom-right {
    font-size: 0.62rem; padding: 0.35rem 0.65rem;
  }
  .badge-top-right { right: 8px; }
  .badge-bottom-right { right: 8px; }
}