/* ===== FONTS ===== */
@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,400;0,600;0,700;1,400&family=Inter:wght@300;400;500;600;700&display=swap');

/* ===== TOKENS ===== */
:root {
  --bg-deep: #0e1117;
  --bg-section: #141820;
  --bg-card: #1a1f2b;
  --bg-card-hover: #1f2535;
  --accent: #c8875a;
  --accent-light: #e0a97a;
  --accent-dark: #9e6940;
  --text-primary: #e8e4df;
  --text-secondary: #9a9590;
  --text-muted: #6b6560;
  --border: rgba(200,135,90,0.12);
  --border-strong: rgba(200,135,90,0.25);
  --nav-bg: rgba(14,17,23,0.7);
  --nav-bg-scrolled: rgba(14,17,23,0.92);
  --serif: 'Cormorant Garamond', Georgia, serif;
  --sans: 'Inter', -apple-system, sans-serif;
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
}

html[data-theme="light"] {
  --bg-deep: #f8f9fa;
  --bg-section: #ffffff;
  --bg-card: #f1f3f5;
  --bg-card-hover: #e9ecef;
  --accent: #b06b3a;
  --accent-light: #c8875a;
  --accent-dark: #8b542e;
  --text-primary: #1a1f2b;
  --text-secondary: #4a5568;
  --text-muted: #718096;
  --border: rgba(176, 107, 58, 0.15);
  --border-strong: rgba(176, 107, 58, 0.3);
  --nav-bg: rgba(248,249,250,0.8);
  --nav-bg-scrolled: rgba(248,249,250,0.95);
}

/* ===== RESET ===== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  background: var(--bg-deep); color: var(--text-primary);
  font-family: var(--sans); line-height: 1.6;
  transition: background 0.4s ease, color 0.4s ease;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; transition: color 0.3s var(--ease); }
a:hover { color: var(--accent-light); }
img { max-width: 100%; display: block; }

/* ===== LAYOUT ===== */
.container { max-width: 1100px; margin: 0 auto; padding: 0 20px; }
section { padding: 64px 0; position: relative; }
section:nth-child(even) { background: var(--bg-section); }

/* ===== NAV ===== */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  padding: 14px 0;
  background: var(--nav-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid transparent;
  transition: all 0.4s var(--ease);
}
.nav.scrolled {
  padding: 10px 0;
  border-bottom-color: var(--border);
  background: var(--nav-bg-scrolled);
}
.nav-inner {
  display: flex; justify-content: space-between; align-items: center;
}
.nav-logo {
  font-family: var(--serif);
  font-size: 1.4rem; font-weight: 700;
  color: var(--text-primary);
  letter-spacing: 1px;
  display: flex; align-items: center; gap: 8px;
}
.nav-logo-icon {
  width: 32px; height: 32px; object-fit: contain;
  border-radius: 4px;
}
.nav-logo span { color: var(--accent); }
.nav-links {
  display: none; list-style: none;
}
.nav-links.active {
  display: flex; flex-direction: column;
  position: absolute; top: 100%; left: 0; right: 0;
  background: var(--nav-bg-scrolled);
  padding: 20px; gap: 16px;
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(20px);
}
.nav-links a {
  font-size: 0.82rem; font-weight: 500;
  color: var(--text-secondary);
  text-transform: uppercase; letter-spacing: 1.5px;
  position: relative; padding-bottom: 2px;
}
.nav-links a::after {
  content: ''; position: absolute; bottom: -2px; left: 0;
  width: 0; height: 1.5px; background: var(--accent);
  transition: width 0.3s var(--ease);
}
.nav-links a:hover { color: var(--text-primary); }
.nav-links a:hover::after { width: 100%; }

.nav-controls {
  display: flex; flex-direction: row; flex-wrap: nowrap; align-items: center; gap: 8px;
  margin-left: auto; margin-right: 14px;
}
.theme-toggle {
  background: var(--bg-card); border: 1px solid var(--border); cursor: pointer;
  font-size: 1.1rem; display: flex; align-items: center; justify-content: center;
  width: 32px; height: 32px; border-radius: 50%;
  transition: all 0.3s var(--ease);
}
.theme-toggle:hover { background: var(--bg-card-hover); }
.theme-toggle .icon-sun { display: none; }
html[data-theme="light"] .theme-toggle .icon-moon { display: none; }
html[data-theme="light"] .theme-toggle .icon-sun { display: block; }

.nav-toggle { display: block; background: none; border: none; cursor: pointer; padding: 4px; }
.nav-toggle span {
  display: block; width: 24px; height: 2px; background: var(--text-primary);
  margin: 5px 0; transition: all 0.3s var(--ease);
}
.lang-switch {
  display: flex; align-items: center; gap: 2px;
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 20px; padding: 3px;
}
.lang-btn {
  padding: 4px 10px; border: none; border-radius: 16px;
  font-size: 0.7rem; font-weight: 600; letter-spacing: 0.5px;
  cursor: pointer; transition: all 0.3s var(--ease);
  background: transparent; color: var(--text-muted);
  font-family: var(--sans);
}
.lang-btn.active { background: var(--accent); color: #0e1117; }
.lang-btn:hover:not(.active) { color: var(--text-primary); }

/* ===== HERO ===== */
.hero {
  min-height: 100vh; display: flex; align-items: center;
  padding-top: 80px; position: relative;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(200,135,90,0.06) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 20%, rgba(200,135,90,0.04) 0%, transparent 50%),
    var(--bg-deep);
  overflow: hidden;
}
.hero-grid { display: flex; flex-direction: column; gap: 40px; align-items: center; }
.hero-content { max-width: 680px; text-align: center; }
.hero-eyebrow {
  font-size: 0.72rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: 2.5px;
  color: var(--accent); margin-bottom: 16px;
  opacity: 0; transform: translateY(20px);
  animation: fadeUp 0.8s 0.3s var(--ease) forwards;
}
.hero-name {
  font-family: var(--serif);
  font-size: clamp(2.8rem, 8vw, 5rem);
  font-weight: 700; line-height: 1.1; margin-bottom: 20px;
  opacity: 0; transform: translateY(20px);
  animation: fadeUp 0.8s 0.5s var(--ease) forwards;
}
.hero-name em { font-style: italic; color: var(--accent); font-weight: 400; }
.hero-desc {
  font-size: 1rem; color: var(--text-secondary);
  line-height: 1.8; margin-bottom: 32px;
  opacity: 0; transform: translateY(20px);
  animation: fadeUp 0.8s 0.7s var(--ease) forwards;
}
.hero-cta {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 32px; background: var(--accent);
  color: #0e1117; font-weight: 600;
  font-size: 0.86rem; letter-spacing: 0.5px;
  border-radius: 4px; transition: all 0.3s var(--ease);
  opacity: 0; transform: translateY(20px);
  animation: fadeUp 0.8s 0.9s var(--ease) forwards;
}
.hero-cta:hover {
  background: var(--accent-light); color: #0e1117;
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(200,135,90,0.3);
}

/* Hero Globe + Logo Combo */
.hero-globe {
  width: 180px; height: 180px; flex-shrink: 0;
  position: relative;
  opacity: 0; animation: fadeUp 0.8s 0.6s var(--ease) forwards;
}
.globe-svg {
  width: 100%; height: 100%;
  color: var(--text-primary);
  position: absolute; inset: 0;
}
.hero-logo-img {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 36%; height: 36%;
  object-fit: contain;
  filter: drop-shadow(0 0 20px rgba(200,135,90,0.35));
  animation: logoGlow 4s ease-in-out infinite;
  z-index: 2;
}
.logo-ring { animation: ringRotate 30s linear infinite; transform-origin: 250px 250px; }
.logo-ring-outer { animation: ringRotate 45s linear infinite reverse; transform-origin: 250px 250px; }
@keyframes ringRotate { to { transform: rotate(360deg); } }

/* Globe animations */
.globe-frame { animation: globeSpin 60s linear infinite; transform-origin: 250px 250px; }
.globe-label {
  fill: var(--accent-light); font-size: 11px; font-weight: 600;
  font-family: 'Inter', sans-serif; opacity: 0.85;
}
.orbital { animation: orbitalSpin 40s linear infinite; transform-origin: 250px 250px; }
.node-1 { animation: pulse 3s ease-in-out infinite; }
.node-2 { animation: pulse 3s ease-in-out 1s infinite; }
.node-3 { animation: pulse 3s ease-in-out 2s infinite; }
.ring-1 { animation: ringPulse 3s ease-in-out infinite; }
.ring-2 { animation: ringPulse 3s ease-in-out 1s infinite; }
.ring-3 { animation: ringPulse 3s ease-in-out 2s infinite; }
.arc { animation: dashFlow 4s linear infinite; }
.arc-2 { animation-delay: 1.3s; }
.arc-3 { animation-delay: 2.6s; }

@keyframes globeSpin { to { transform: rotate(360deg); } }
@keyframes orbitalSpin { to { transform: rotate(-20deg) rotate(360deg); } }
@keyframes pulse {
  0%, 100% { r: 7; opacity: 1; }
  50% { r: 9; opacity: 0.7; }
}
@keyframes ringPulse {
  0%, 100% { r: 18; opacity: 0.08; }
  50% { r: 26; opacity: 0.15; }
}
@keyframes dashFlow { to { stroke-dashoffset: -56; } }
@keyframes logoGlow {
  0%, 100% { filter: drop-shadow(0 0 24px rgba(200,135,90,0.3)); }
  50% { filter: drop-shadow(0 0 48px rgba(200,135,90,0.5)); }
}

/* Hero particles */
.hero-bg-particles {
  position: absolute; inset: 0; overflow: hidden; pointer-events: none;
}
.hero-bg-particles span {
  position: absolute;
  width: 3px; height: 3px;
  background: var(--accent);
  border-radius: 50%;
  opacity: 0;
  animation: particleFloat 12s linear infinite;
}
.hero-bg-particles span:nth-child(1) { left: 10%; animation-delay: 0s; animation-duration: 14s; }
.hero-bg-particles span:nth-child(2) { left: 20%; animation-delay: 2s; animation-duration: 11s; }
.hero-bg-particles span:nth-child(3) { left: 35%; animation-delay: 4s; animation-duration: 16s; }
.hero-bg-particles span:nth-child(4) { left: 50%; animation-delay: 1s; animation-duration: 13s; }
.hero-bg-particles span:nth-child(5) { left: 65%; animation-delay: 3s; animation-duration: 15s; }
.hero-bg-particles span:nth-child(6) { left: 75%; animation-delay: 5s; animation-duration: 12s; }
.hero-bg-particles span:nth-child(7) { left: 85%; animation-delay: 0.5s; animation-duration: 17s; }
.hero-bg-particles span:nth-child(8) { left: 40%; animation-delay: 6s; animation-duration: 10s; }
.hero-bg-particles span:nth-child(9) { left: 55%; animation-delay: 7s; animation-duration: 14s; }
.hero-bg-particles span:nth-child(10) { left: 90%; animation-delay: 3.5s; animation-duration: 11s; }
@keyframes particleFloat {
  0% { transform: translateY(100vh) scale(0); opacity: 0; }
  10% { opacity: 0.3; }
  90% { opacity: 0.15; }
  100% { transform: translateY(-10vh) scale(1); opacity: 0; }
}

/* ===== SECTION HEADER ===== */
.section-header { margin-bottom: 40px; }
.section-label {
  font-size: 0.72rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: 3px;
  color: var(--accent); margin-bottom: 10px;
}
.section-title {
  font-family: var(--serif);
  font-size: clamp(1.8rem, 5vw, 2.8rem);
  font-weight: 700; line-height: 1.2;
}
.section-divider {
  width: 50px; height: 2px; background: var(--accent);
  margin-top: 16px; border-radius: 1px;
}

/* ===== ABOUT ===== */
.about-intro { max-width: 800px; margin-bottom: 48px; }
.about-intro p {
  font-size: 0.98rem; color: var(--text-secondary); line-height: 1.8;
}
.about-intro p + p { margin-top: 16px; }

/* Sector Cards */
.sector-grid {
  display: grid; grid-template-columns: 1fr; gap: 16px;
  margin-bottom: 48px;
}
.sector-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 10px; padding: 28px 24px;
  transition: all 0.35s var(--ease);
  position: relative; overflow: hidden;
}
.sector-card::before {
  content: ''; position: absolute; top: 0; left: 0;
  width: 100%; height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-light), transparent);
  opacity: 0; transition: opacity 0.35s var(--ease);
}
.sector-card:hover {
  background: var(--bg-card-hover); border-color: var(--border-strong);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.15);
}
.sector-card:hover::before { opacity: 1; }
.sector-icon {
  font-size: 1.6rem; margin-bottom: 14px;
  width: 48px; height: 48px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(200,135,90,0.1); border-radius: 10px;
}
.sector-name {
  font-size: 1rem; font-weight: 700; margin-bottom: 8px;
  color: var(--text-primary);
}
.sector-desc {
  font-size: 0.84rem; color: var(--text-muted); line-height: 1.6;
}

/* Specialized Services */
.services-block {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 12px; padding: 32px 24px;
  position: relative;
}
.services-block::before {
  content: ''; position: absolute; top: 0; left: 24px; right: 24px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0.3;
}
.services-heading {
  font-family: var(--serif);
  font-size: 1.2rem; font-weight: 700;
  margin-bottom: 24px; color: var(--accent);
}
.services-list { display: flex; flex-direction: column; gap: 20px; }
.service-item {
  display: flex; gap: 16px; align-items: flex-start;
  padding: 16px; border-radius: 8px;
  transition: background 0.3s var(--ease);
}
.service-item:hover { background: rgba(200,135,90,0.05); }
.service-icon {
  width: 42px; height: 42px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  background: rgba(200,135,90,0.08); border-radius: 8px;
  font-size: 1.2rem;
}
.service-name {
  font-size: 0.92rem; font-weight: 700;
  color: var(--text-primary); margin-bottom: 4px;
}
.service-desc {
  font-size: 0.82rem; color: var(--text-muted); line-height: 1.6;
}

/* Additional Opportunities styling */
.opp-block {
  margin-top: 48px;
}
.opp-heading {
  font-family: var(--serif);
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 24px;
  color: var(--accent);
}
.opp-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}
.opp-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 24px;
  position: relative;
  overflow: hidden;
  transition: all 0.35s var(--ease);
}
.opp-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-light), transparent);
  opacity: 0;
  transition: opacity 0.35s var(--ease);
}
.opp-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-strong);
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(200, 135, 90, 0.08);
}
.opp-card:hover::before {
  opacity: 1;
}
.opp-badge-row {
  display: flex;
  margin-bottom: 12px;
}
.opp-badge {
  padding: 4px 10px;
  background: rgba(200, 135, 90, 0.08);
  border: 1px solid var(--border);
  border-radius: 20px;
  font-size: 0.68rem;
  font-weight: 700;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 1px;
  transition: all 0.3s var(--ease);
}
.opp-card:hover .opp-badge {
  background: var(--accent);
  color: #0e1117;
  border-color: var(--accent);
}
.opp-name {
  font-size: 0.94rem;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--text-primary);
}
.opp-desc {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ===== FOUNDER ===== */
.founder-card {
  max-width: 720px; margin: 0 auto;
  text-align: center;
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 16px; padding: 48px 32px 40px;
  position: relative; overflow: hidden;
}
.founder-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
}
.founder-photo {
  width: 160px; height: 160px; border-radius: 50%;
  overflow: hidden; margin: 0 auto 20px;
  border: 3px solid var(--border-strong);
  box-shadow: 0 12px 40px rgba(0,0,0,0.3);
}
.founder-photo img {
  width: 100%; height: 100%; object-fit: cover;
  object-position: center 20%;
}
.founder-badges {
  display: flex; gap: 8px; flex-wrap: wrap; justify-content: center;
  margin-bottom: 24px;
}
.badge {
  padding: 5px 12px;
  background: rgba(200,135,90,0.08); border: 1px solid var(--border);
  border-radius: 20px; font-size: 0.72rem; font-weight: 600;
  color: var(--text-secondary); letter-spacing: 0.5px;
  transition: all 0.3s var(--ease);
}
.badge:hover {
  border-color: var(--accent); color: var(--accent);
}
.founder-name {
  font-family: var(--serif);
  font-size: 1.6rem; font-weight: 700; margin-bottom: 4px;
}
.founder-role {
  font-size: 0.82rem; font-weight: 600; color: var(--accent);
  text-transform: uppercase; letter-spacing: 2px; margin-bottom: 16px;
}
.founder-bio-block {
  text-align: left; max-width: 600px; margin: 0 auto;
}
.founder-bio {
  font-size: 0.92rem; color: var(--text-secondary); line-height: 1.8;
}
.founder-bio + .founder-bio { margin-top: 14px; }
.founder-stats {
  display: flex; justify-content: center; gap: 40px;
  margin-top: 28px; padding-top: 24px;
  border-top: 1px solid var(--border);
}
.stat-item { text-align: center; }
.stat-num {
  font-family: var(--serif);
  font-size: 1.8rem; font-weight: 700;
  color: var(--accent); line-height: 1;
}
.stat-label {
  font-size: 0.7rem; color: var(--text-muted);
  margin-top: 4px; font-weight: 500; text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Photo Banner Slider */
.founder-banner {
  overflow: hidden;
  margin-top: 48px;
  position: relative;
  mask-image: linear-gradient(90deg, transparent 0%, black 8%, black 92%, transparent 100%);
  -webkit-mask-image: linear-gradient(90deg, transparent 0%, black 8%, black 92%, transparent 100%);
}
.banner-track {
  display: flex; gap: 16px;
  width: max-content;
  animation: bannerScroll 40s linear infinite;
}
.banner-track:hover { animation-play-state: paused; }
.banner-slide {
  flex-shrink: 0;
  width: 280px; height: 200px;
  border-radius: 10px; overflow: hidden;
}
.banner-slide img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 0.5s var(--ease);
}
.banner-slide:hover img { transform: scale(1.05); }
@keyframes bannerScroll {
  0% { transform: translateX(0); }
  100% { transform: translateX(calc(-280px * 11 - 16px * 11)); }
}

/* ===== CONTACT ===== */
.contact-grid { display: flex; flex-direction: column; gap: 40px; }
.contact-info-item {
  display: flex; align-items: flex-start; gap: 14px;
  margin-bottom: 24px;
}
.contact-icon {
  width: 38px; height: 38px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  background: rgba(200,135,90,0.1); border-radius: 8px; font-size: 1rem;
}
.contact-label {
  font-size: 0.7rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: 1.5px;
  color: var(--text-muted); margin-bottom: 2px;
}
.contact-value { font-size: 0.92rem; color: var(--text-primary); font-weight: 500; }
.form-group { margin-bottom: 16px; }
.form-label {
  display: block; font-size: 0.72rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: 1px;
  color: var(--text-muted); margin-bottom: 5px;
}
.form-input, .form-textarea {
  width: 100%; padding: 12px 14px;
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 6px; color: var(--text-primary);
  font-family: var(--sans); font-size: 0.9rem;
  transition: all 0.3s var(--ease); outline: none;
}
.form-input:focus, .form-textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(200,135,90,0.1);
}
.form-input::placeholder, .form-textarea::placeholder { color: var(--text-muted); }
.form-textarea { resize: vertical; min-height: 110px; }
.form-row { display: flex; flex-direction: column; gap: 0; }
.form-btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 32px; margin-top: 4px;
  background: var(--accent); color: #0e1117;
  font-weight: 600; font-size: 0.86rem;
  border: none; border-radius: 4px;
  cursor: pointer; transition: all 0.3s var(--ease);
  font-family: var(--sans); width: 100%;
  justify-content: center;
}
.form-btn:hover {
  background: var(--accent-light);
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(200,135,90,0.3);
}

/* ===== FLOATING CONTACT WIDGET ===== */
.float-widget {
  position: fixed; bottom: 80px; right: 24px;
  display: flex; flex-direction: column; gap: 12px;
  z-index: 90;
}
.float-btn {
  position: relative;
  width: 48px; height: 48px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 4px 20px rgba(0,0,0,0.25);
  transition: all 0.35s var(--ease);
  text-decoration: none;
  overflow: visible;
}
.float-btn:hover {
  transform: scale(1.12);
  box-shadow: 0 6px 28px rgba(0,0,0,0.35);
}
.float-icon {
  width: 24px; height: 24px; flex-shrink: 0;
  pointer-events: none;
}

/* Zalo */
.float-zalo {
  background: #0068FF; color: #fff;
}
.float-zalo .float-icon { width: 48px; height: 48px; border-radius: 50%; }
.float-zalo:hover { background: #0054cc; color: #fff; }

/* Phone */
.float-phone {
  background: #25d366; color: #fff;
}
.float-phone:hover { background: #1fb855; color: #fff; }

/* Email */
.float-email {
  background: var(--accent); color: #0e1117;
}
.float-email:hover { background: var(--accent-light); color: #0e1117; }

/* Slide-out label */
.float-label {
  position: absolute;
  right: calc(100% + 12px); top: 50%;
  transform: translateY(-50%) translateX(8px);
  white-space: nowrap;
  background: var(--bg-card);
  border: 1px solid var(--border-strong);
  color: var(--text-primary);
  padding: 6px 14px;
  border-radius: 6px;
  font-size: 0.78rem; font-weight: 600;
  font-family: var(--sans);
  letter-spacing: 0.3px;
  box-shadow: 0 4px 16px rgba(0,0,0,0.2);
  opacity: 0;
  pointer-events: none;
  transition: all 0.3s var(--ease);
}
.float-label::after {
  content: '';
  position: absolute; right: -6px; top: 50%;
  transform: translateY(-50%);
  border: 6px solid transparent;
  border-left-color: var(--border-strong);
}
.float-btn:hover .float-label {
  opacity: 1;
  transform: translateY(-50%) translateX(0);
  pointer-events: auto;
}

/* Pulse animation on Zalo */
.float-zalo::before {
  content: '';
  position: absolute; inset: -4px;
  border-radius: 50%;
  border: 2px solid #0068FF;
  opacity: 0;
  animation: floatPulse 2.5s ease-out infinite;
}
@keyframes floatPulse {
  0% { transform: scale(1); opacity: 0.6; }
  100% { transform: scale(1.5); opacity: 0; }
}

/* ===== SCROLL TO TOP ===== */
.scroll-top {
  position: fixed; bottom: 24px; right: 24px;
  width: 44px; height: 44px;
  background: var(--accent); color: #0e1117;
  border: none; border-radius: 50%;
  font-size: 1.2rem; font-weight: 700;
  cursor: pointer; z-index: 90;
  opacity: 0; visibility: hidden;
  transform: translateY(12px);
  transition: all 0.3s var(--ease);
  box-shadow: 0 4px 16px rgba(200,135,90,0.3);
}
.scroll-top.visible {
  opacity: 1; visibility: visible;
  transform: translateY(0);
}
.scroll-top:hover {
  background: var(--accent-light);
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(200,135,90,0.4);
}

/* ===== FOOTER ===== */
.footer {
  padding: 40px 0 28px;
  border-top: 1px solid var(--border);
  text-align: center;
}
.footer-inner {
  display: flex; flex-direction: column; align-items: center; gap: 10px;
}
.footer-logo {
  display: inline-block;
}
.footer-logo-img {
  height: 100px; width: auto; object-fit: contain;
  opacity: 0.9; transition: opacity 0.3s var(--ease);
}
.footer-logo-img:hover { opacity: 1; }
.footer-tagline {
  font-size: 0.78rem; color: var(--text-muted); max-width: 600px;
}
.footer-divider {
  width: 40px; height: 1px; background: var(--border-strong);
  margin: 6px 0;
}
.footer-copy {
  font-size: 0.72rem; color: var(--text-muted);
}

/* ===== ANIMATIONS ===== */
@keyframes fadeUp { to { opacity: 1; transform: translateY(0); } }
.reveal {
  opacity: 0; transform: translateY(40px);
  transition: all 0.7s var(--ease);
}
.reveal.visible { opacity: 1; transform: translateY(0); }

/* =========================================================
   RESPONSIVE — TABLET (min 640px)
   ========================================================= */
@media (min-width: 640px) {
  .container { padding: 0 28px; }
  section { padding: 80px 0; }
  .sector-grid { grid-template-columns: repeat(3, 1fr); }
  .opp-grid { grid-template-columns: repeat(3, 1fr); }
  .form-row { flex-direction: row; gap: 14px; }
  .form-row .form-group { flex: 1; }
  .form-btn { width: auto; }
  .hero-globe { width: 240px; height: 240px; }
  .founder-card { padding: 48px 40px 40px; }
}

/* =========================================================
   RESPONSIVE — DESKTOP (min 900px)
   ========================================================= */
@media (min-width: 900px) {
  section { padding: 100px 0; }
  .section-header { margin-bottom: 60px; }

  /* Nav — show horizontal links */
  .nav { padding: 18px 0; }
  .nav.scrolled { padding: 12px 0; }
  .nav-links {
    display: flex !important; gap: 28px;
    position: static; background: none;
    padding: 0; flex-direction: row;
    border-bottom: none;
    flex: 1; justify-content: center;
    margin: 0 20px;
  }
  .nav-toggle { display: none; }
  .nav-controls { margin-left: 0; margin-right: 0; }
  .lang-switch { margin-left: 0; margin-right: 0; }
  .lang-btn { padding: 4px 12px; font-size: 0.72rem; }

  /* Hero — side by side */
  .hero-grid {
    flex-direction: row; justify-content: space-between;
    align-items: center; gap: 60px;
  }
  .hero-content { text-align: left; }
  .hero-globe { width: 380px; height: 380px; order: 2; }

  /* Founder — banner larger on desktop */
  .banner-slide { width: 340px; height: 240px; }
  @keyframes bannerScroll {
    0% { transform: translateX(0); }
    100% { transform: translateX(calc(-340px * 11 - 16px * 11)); }
  }

  /* Contact — grid */
  .contact-grid { flex-direction: row; gap: 60px; }
  .contact-grid > * { flex: 1; }

  /* Services block columns */
  .services-list {
    display: grid; grid-template-columns: 1fr 1fr; gap: 16px;
  }
}