/* ===========================
   RK Consulting — Design System
   Colours from logo:
   Teal/Navy: #1B3A4B
   Orange:    #F0A500
   White:     #FFFFFF
   =========================== */

@import url('https://fonts.googleapis.com/css2?family=Sora:wght@300;400;500;600;700;800&family=DM+Sans:ital,wght@0,300;0,400;0,500;1,300&display=swap');

:root {
  --navy: #1B3A4B;
  --navy-dark: #0f2535;
  --navy-light: #254d65;
  --orange: #ff9f1c;
  --orange-light: #ffb347;
  --orange-dim: rgba(255,159,28,0.12);
  --white: #ffffff;
  --off-white: #f7f9fb;
  --grey-100: #eef1f4;
  --grey-200: #d0d8df;
  --grey-500: #7a8fa0;
  --grey-800: #2c3e50;
  --text: #1a2e3b;
  --text-light: #5a7080;
  --radius: 12px;
  --radius-lg: 20px;
  --shadow: 0 4px 24px rgba(27,58,75,0.10);
  --shadow-lg: 0 12px 48px rgba(27,58,75,0.16);
  --transition: 0.25s cubic-bezier(0.4,0,0.2,1);
}

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

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

body {
  font-family: 'DM Sans', sans-serif;
  color: var(--text);
  background: var(--white);
  line-height: 1.65;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5 {
  font-family: 'Sora', sans-serif;
  line-height: 1.2;
  color: var(--navy);
}

a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
ul { list-style: none; }

/* ===== SVG ICONS ===== */
.icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.icon svg { display: block; }

/* ===== NAVIGATION ===== */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: var(--navy-dark);
  /*border-bottom: 1px solid rgba(255,255,255,0.08);*/
  border-bottom: none;
  transition: box-shadow var(--transition);
}
nav.scrolled { box-shadow: 0 4px 24px rgba(0,0,0,0.25); }

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem 0 0;
  height: 88px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo img { height: 72px; width: auto; background: transparent; border-radius: 8px; padding: 4px 12px; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav-links a {
  font-family: 'Sora', sans-serif;
  font-size: 0.85rem;
  font-weight: 500;
  color: rgba(255,255,255,0.85);
  padding: 0.5rem 0.85rem;
  border-radius: 8px;
  transition: background var(--transition), color var(--transition);
  white-space: nowrap;
}
.nav-links > a:hover, .nav-links > a.active,
.nav-links > div > a.dropdown-toggle:hover {
  background: rgba(255,255,255,0.12);
  color: var(--white);
}
/* Dropdown menu items: always dark text regardless of active state */
.dropdown-menu a {
  color: var(--navy) !important;
}
.dropdown-menu a:hover, .dropdown-menu a.active {
  background: var(--orange-dim) !important;
  color: var(--orange) !important;
}

/* Dropdown */
.dropdown { position: relative; }
.dropdown-toggle {
  display: flex; align-items: center; gap: 0.3rem; cursor: pointer;
}
.dropdown-toggle svg { transition: transform var(--transition); }
.dropdown-toggle.active svg { transform: rotate(180deg); }

.dropdown { position: relative; }

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  background: var(--white);
  border: 1px solid var(--grey-100);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 0.5rem;
  min-width: 220px;
  /* Hidden by default */
  visibility: hidden;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease, visibility 0.2s ease;
  /* No transform animation — eliminates the gap that swallows clicks */
  z-index: 1100;
}
.dropdown-menu.open {
  visibility: visible;
  opacity: 1;
  pointer-events: all;
}
/* Bridge gap between toggle and menu so mouse doesn't lose hover */
.dropdown-menu::before {
  content: '';
  position: absolute;
  top: -12px;
  left: 0;
  right: 0;
  height: 12px;
}
.dropdown-menu a {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.7rem 1rem;
  border-radius: 8px;
  font-size: 0.875rem;
  font-family: 'Sora', sans-serif;
  font-weight: 500;
  transition: background var(--transition), color var(--transition);
}
.dropdown-menu a svg { flex-shrink: 0; opacity: 0.6; }

.nav-cta {
  background: var(--orange) !important;
  color: var(--white) !important;
  padding: 0.55rem 1.25rem !important;
  border-radius: 8px !important;
  font-weight: 600 !important;
}
.nav-cta:hover { background: var(--orange-light) !important; color: var(--white) !important; }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
}
.hamburger span {
  display: block;
  width: 24px; height: 2px;
  background: rgba(255,255,255,0.85);
  border-radius: 2px;
  transition: var(--transition);
}

/* ===== HERO ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: var(--navy-dark);
  position: relative;
  overflow: hidden;
  padding: 112px 2rem 80px;
}

.hero-bg-pattern {
  position: absolute; inset: 0;
  background-image:
    radial-gradient(circle at 80% 20%, rgba(255,159,28,0.15) 0%, transparent 50%),
    radial-gradient(circle at 10% 80%, rgba(255,159,28,0.08) 0%, transparent 40%);
}

.hero-grid-overlay {
  position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 60px 60px;
}

.hero-inner {
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(255,159,28,0.15);
  border: 1px solid rgba(255,159,28,0.3);
  color: var(--orange);
  font-family: 'Sora', sans-serif;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.4rem 1rem;
  border-radius: 100px;
  margin-bottom: 1.5rem;
}

.hero h1 {
  font-size: clamp(2.4rem, 4.5vw, 3.8rem);
  font-weight: 800;
  color: var(--white);
  margin-bottom: 1.5rem;
  line-height: 1.1;
}

.hero h1 span { color: var(--orange); }

.hero p {
  font-size: 1.15rem;
  color: rgba(255,255,255,0.75);
  margin-bottom: 2.5rem;
  max-width: 520px;
  font-weight: 300;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--orange);
  color: var(--white);
  font-family: 'Sora', sans-serif;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.85rem 1.75rem;
  border-radius: 10px;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
  border: 2px solid transparent;
}
.btn-primary:hover {
  background: var(--orange-light);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(255,159,28,0.35);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: transparent;
  color: var(--white);
  font-family: 'Sora', sans-serif;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.85rem 1.75rem;
  border-radius: 10px;
  border: 2px solid rgba(255,255,255,0.3);
  transition: border-color var(--transition), background var(--transition);
}
.btn-secondary:hover {
  border-color: var(--orange);
  background: rgba(255,159,28,0.08);
}

/* Hero visual side */
.hero-visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-cards-stack {
  position: relative;
  width: 100%;
  max-width: 420px;
}

.h-card {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  backdrop-filter: blur(10px);
  animation: float 6s ease-in-out infinite;
}
.h-card:nth-child(2) {
  position: absolute;
  top: -40px; right: -30px;
  width: 220px;
  animation-delay: -2s;
}
.h-card:nth-child(3) {
  position: absolute;
  bottom: -30px; left: -20px;
  width: 200px;
  animation-delay: -4s;
}

.h-card-icon {
  margin-bottom: 0.75rem;
  color: var(--orange);
}
.h-card-title {
  font-family: 'Sora', sans-serif;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 0.25rem;
}
.h-card-sub {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.5);
}
.h-card-bar {
  margin-top: 0.75rem;
  height: 4px;
  background: rgba(255,255,255,0.1);
  border-radius: 2px;
  overflow: hidden;
}
.h-card-bar-fill {
  height: 100%;
  background: var(--orange);
  border-radius: 2px;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

/* ===== SECTION SHARED ===== */
section { padding: 96px 2rem; }

.section-inner { max-width: 1200px; margin: 0 auto; }

.section-label {
  font-family: 'Sora', sans-serif;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--orange);
  margin-bottom: 0.75rem;
}

.section-title {
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  font-weight: 800;
  color: var(--navy);
  margin-bottom: 1rem;
}
.section-title span { color: var(--orange); }

.section-desc {
  font-size: 1.05rem;
  color: var(--text-light);
  max-width: 600px;
  line-height: 1.75;
}

.section-header { margin-bottom: 3.5rem; }
.section-header.center { text-align: center; }
.section-header.center .section-desc { margin: 0 auto; }

/* ===== SERVICES GRID ===== */
.services-section { background: var(--off-white); }

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}

.service-card {
  background: var(--white);
  border: 1px solid var(--grey-100);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--orange);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}
.service-card:hover::before { transform: scaleX(1); }
.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--grey-200);
}

.sc-icon {
  width: 52px; height: 52px;
  background: var(--orange-dim);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--orange);
  margin-bottom: 1.25rem;
}

.sc-title {
  font-family: 'Sora', sans-serif;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 0.5rem;
}

.sc-desc {
  font-size: 0.9rem;
  color: var(--text-light);
  line-height: 1.65;
  margin-bottom: 1.25rem;
}

.sc-link {
  font-family: 'Sora', sans-serif;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--orange);
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  transition: gap var(--transition);
}
.sc-link:hover { gap: 0.6rem; }

/* ===== AI SECTION ===== */
.ai-section { background: var(--navy); position: relative; overflow: hidden; }
.ai-section::before {
  content: '';
  position: absolute;
  top: -200px; right: -200px;
  width: 600px; height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255,159,28,0.12) 0%, transparent 70%);
}

.ai-section .section-title { color: var(--white); }
.ai-section .section-desc { color: rgba(255,255,255,0.65); }
.ai-section .section-label { color: var(--orange); }

.ai-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: center;
}

.ai-features {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.ai-feature {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  padding: 1.25rem;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius);
  transition: background var(--transition), border-color var(--transition);
}
.ai-feature:hover {
  background: rgba(255,255,255,0.08);
  border-color: rgba(255,159,28,0.3);
}

.ai-feature-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
  width: 44px; height: 44px;
  background: var(--orange-dim);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--orange);
}

.ai-feature-title {
  font-family: 'Sora', sans-serif;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 0.3rem;
}
.ai-feature-desc { font-size: 0.875rem; color: rgba(255,255,255,0.55); }

.ai-cta-box {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,159,28,0.25);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  text-align: center;
}
.ai-cta-box h3 {
  font-size: 1.4rem;
  color: var(--white);
  margin-bottom: 1rem;
}
.ai-cta-box p { color: rgba(255,255,255,0.6); font-size: 0.9rem; margin-bottom: 1.5rem; }

/* ===== WHY US ===== */
.why-section { background: var(--off-white); }

.why-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
}

.why-card {
  padding: 2rem;
  background: var(--white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--grey-100);
}
.why-number {
  font-family: 'Sora', sans-serif;
  font-size: 3rem;
  font-weight: 800;
  color: var(--orange);
  opacity: 0.25;
  line-height: 1;
  margin-bottom: 0.5rem;
}
.why-title {
  font-family: 'Sora', sans-serif;
  font-size: 1rem;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 0.5rem;
}
.why-desc { font-size: 0.875rem; color: var(--text-light); line-height: 1.65; }

/* ===== CONTACT ===== */
.contact-section { background: var(--white); }

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}

.contact-info { display: flex; flex-direction: column; gap: 1.5rem; }
.contact-item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}
.contact-item-icon {
  width: 44px; height: 44px;
  background: var(--orange-dim);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  color: var(--orange);
  flex-shrink: 0;
}
.contact-item-title {
  font-family: 'Sora', sans-serif;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--navy);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 0.25rem;
}
.contact-item-value { font-size: 0.95rem; color: var(--text-light); }
.contact-item-value a { color: var(--orange); }

.contact-form {
  background: var(--off-white);
  border: 1px solid var(--grey-100);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
}

.form-group { margin-bottom: 1.25rem; }
.form-group label {
  display: block;
  font-family: 'Sora', sans-serif;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--navy);
  margin-bottom: 0.4rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.8rem 1rem;
  border: 1px solid var(--grey-200);
  border-radius: 8px;
  font-family: 'DM Sans', sans-serif;
  font-size: 0.95rem;
  color: var(--text);
  background: var(--white);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--orange);
  box-shadow: 0 0 0 3px rgba(255,159,28,0.12);
}
.form-group textarea { resize: vertical; min-height: 120px; }

/* ===== FOOTER ===== */
footer {
  background: var(--navy-dark);
  color: rgba(255,255,255,0.6);
  padding: 3rem 2rem 1.5rem 1rem;
}
.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding-left: 0;
}
.footer-top {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 2.5rem;
  margin-bottom: 3rem;
}
.footer-brand img { height: 80px; width: auto; background: transparent; border-radius: 8px; padding: 6px 14px; margin-bottom: 1rem; }
.footer-brand p { font-size: 0.9rem; line-height: 1.6; max-width: 360px; }
.footer-col h4 {
  font-family: 'Sora', sans-serif;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--white);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 1rem;
}
.footer-col a {
  display: block;
  font-size: 0.875rem;
  color: rgba(255,255,255,0.5);
  margin-bottom: 0.5rem;
  transition: color var(--transition);
}
.footer-col a:hover { color: var(--orange); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
}
.footer-bottom a { color: var(--orange); }

/* ===== PAGE HERO (inner pages) ===== */
.page-hero {
  background: var(--navy-dark);
  padding: 152px 2rem 80px;
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(circle at 70% 50%, rgba(255,159,28,0.12) 0%, transparent 60%);
}
.page-hero-inner {
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}
.page-hero h1 {
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 800;
  color: var(--white);
  margin-bottom: 1rem;
}
.page-hero h1 span { color: var(--orange); }
.page-hero p {
  font-size: 1.1rem;
  color: rgba(255,255,255,0.7);
  max-width: 580px;
  line-height: 1.7;
  margin-bottom: 2rem;
}

/* ===== FEATURE LIST ===== */
.feature-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin: 2rem 0;
}
.feature-item {
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
}
.feature-check {
  width: 22px; height: 22px;
  background: var(--orange);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  margin-top: 2px;
  color: white;
  font-size: 0.7rem;
}

/* ===== TWO COL ===== */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

/* ===== SERVICES CARD GRID (for inner pages) ===== */
.use-cases-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.25rem;
}
.use-case-card {
  background: var(--off-white);
  border: 1px solid var(--grey-100);
  border-radius: var(--radius);
  padding: 1.5rem;
}
.use-case-card h4 {
  font-family: 'Sora', sans-serif;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 0.4rem;
}
.use-case-card p { font-size: 0.85rem; color: var(--text-light); }

/* ===== CONSULTANCY SERVICES GRID (like screenshot) ===== */
.consultancy-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
  margin-top: 2.5rem;
}
.consultancy-card {
  background: var(--white);
  border: 1px solid var(--grey-100);
  border-radius: var(--radius-lg);
  padding: 1.75rem 2rem;
  display: flex;
  gap: 1.25rem;
  align-items: flex-start;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.consultancy-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
  border-color: rgba(255,159,28,0.3);
}
.consultancy-card-icon {
  width: 48px; height: 48px;
  background: var(--orange-dim);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--orange);
  flex-shrink: 0;
}
.consultancy-card-body h4 {
  font-family: 'Sora', sans-serif;
  font-size: 1rem;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 0.4rem;
}
.consultancy-card-body p {
  font-size: 0.875rem;
  color: var(--text-light);
  line-height: 1.65;
}

/* ===== LLM LOGOS GRID ===== */
.llm-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  margin-top: 2rem;
}
.llm-card {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  text-align: center;
  transition: background var(--transition), border-color var(--transition);
}
.llm-card:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,159,28,0.3);
}
.llm-logo {
  width: 56px; height: 56px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.llm-logo img {
  width: 100%; height: 100%;
  object-fit: contain;
  filter: brightness(0) invert(1);
}
.llm-logo svg { display: block; }
.llm-name {
  font-family: 'Sora', sans-serif;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--white);
}
.llm-maker {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.45);
}

/* ===== CTA BANNER ===== */
.cta-banner {
  background: var(--orange);
  padding: 64px 2rem;
  text-align: center;
}
.cta-banner h2 {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  color: var(--white);
  margin-bottom: 0.75rem;
}
.cta-banner p { color: var(--navy); margin-bottom: 2rem; font-size: 1.05rem; font-weight: 500; }
.btn-white {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--white);
  color: var(--orange);
  font-family: 'Sora', sans-serif;
  font-weight: 700;
  font-size: 0.95rem;
  padding: 0.85rem 2rem;
  border-radius: 10px;
  transition: transform var(--transition), box-shadow var(--transition);
}
.btn-white:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,0.15); }

/* ===== MOBILE ===== */
@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero-visual { display: none; }
  .ai-grid { grid-template-columns: 1fr; }
  .two-col { grid-template-columns: 1fr; gap: 2.5rem; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .consultancy-grid { grid-template-columns: 1fr; }
  .llm-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .hamburger { display: flex; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 88px; left: 0; right: 0;
    background: var(--navy);
    padding: 1rem 1.5rem 2rem;
    border-bottom: 1px solid rgba(255,255,255,0.08);
    box-shadow: var(--shadow-lg);
    gap: 0.25rem;
    align-items: flex-start;
  }
  .dropdown-menu {
    position: static;
    transform: none !important;
    box-shadow: none;
    border: none;
    border-radius: 0;
    background: rgba(255,255,255,0.08);
    visibility: visible !important;
    opacity: 1;
    pointer-events: all;
    display: none;
    padding: 0.25rem 0 0.25rem 1rem;
  }
  .dropdown-menu.open { display: block; }
  .dropdown-menu a { color: rgba(255,255,255,0.8) !important; }
  .dropdown-menu a:hover { color: var(--orange) !important; background: rgba(255,255,255,0.08) !important; }
  section { padding: 64px 1.5rem; }
  .footer-top { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: 0.5rem; text-align: center; }
}