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

:root {
  --blue-900: #0D2247;
  --blue-800: #1A3A6B;
  --blue-700: #1E4D8C;
  --blue-600: #2563C8;
  --blue-500: #3B82F6;
  --blue-100: #DBEAFE;
  --blue-50:  #EEF2F8;
  --gold:     #C8A84B;
  --gold-light: #E8C96A;
  --gray-900: #111827;
  --gray-700: #374151;
  --gray-500: #6B7280;
  --gray-300: #D1D5DB;
  --gray-100: #F3F4F6;
  --white:    #FFFFFF;
  --shadow-sm: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.05);
  --shadow-md: 0 4px 16px rgba(0,0,0,.10);
  --shadow-lg: 0 10px 40px rgba(0,0,0,.14);
  --radius:   12px;
  --radius-sm: 6px;
  --transition: .25s ease;
}

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

body {
  font-family: 'Noto Sans TC', 'Inter', system-ui, sans-serif;
  color: var(--gray-700);
  background: var(--white);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

.container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: .95rem;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all var(--transition);
  white-space: nowrap;
  text-decoration: none;
}
.btn-primary {
  background: var(--blue-800);
  color: var(--white);
  border-color: var(--blue-800);
}
.btn-primary:hover {
  background: var(--blue-900);
  border-color: var(--blue-900);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(26,58,107,.35);
}
.btn-outline {
  background: transparent;
  color: var(--white);
  border-color: rgba(255,255,255,.55);
}
.btn-outline:hover {
  background: rgba(255,255,255,.12);
  border-color: var(--white);
}
.btn-lg { padding: 15px 36px; font-size: 1rem; }
.btn-full { width: 100%; justify-content: center; }

/* ===== HEADER ===== */
.header {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(255,255,255,.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(0,0,0,.07);
  transition: box-shadow var(--transition);
}
.header.scrolled { box-shadow: var(--shadow-md); }

.nav-container {
  display: flex;
  align-items: center;
  gap: 40px;
  height: 70px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo-text { display: flex; flex-direction: column; line-height: 1.2; }
.logo-zh { font-size: 1.1rem; font-weight: 700; color: var(--blue-800); letter-spacing: .05em; }
.logo-en { font-size: .7rem; font-weight: 500; color: var(--gray-500); letter-spacing: .12em; text-transform: uppercase; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  margin-left: auto;
}
.nav-links a {
  font-size: .9rem;
  font-weight: 500;
  color: var(--gray-700);
  transition: color var(--transition);
  position: relative;
}
.nav-links a::after {
  content: '';
  position: absolute; bottom: -3px; left: 0; right: 0; height: 2px;
  background: var(--blue-800);
  transform: scaleX(0);
  transition: transform var(--transition);
}
.nav-links a:hover { color: var(--blue-800); }
.nav-links a:hover::after { transform: scaleX(1); }

.nav-cta { margin-left: 8px; padding: 10px 22px; font-size: .88rem; }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  margin-left: auto;
}
.hamburger span {
  display: block;
  width: 24px; height: 2px;
  background: var(--blue-800);
  border-radius: 2px;
  transition: all var(--transition);
}

/* ===== HERO ===== */
.hero {
  min-height: 100vh;
  position: relative;
  display: flex;
  align-items: center;
  padding-top: 70px;
  overflow: hidden;
}
.hero-bg {
  position: absolute; inset: 0;
  background: linear-gradient(135deg, var(--blue-900) 0%, var(--blue-800) 50%, var(--blue-700) 100%);
}
.hero-bg::before {
  content: '';
  position: absolute; inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}
.hero-bg::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0; height: 200px;
  background: linear-gradient(to top, var(--white), transparent);
}

.hero-content {
  position: relative;
  z-index: 2;
  padding: 80px 24px 160px;
  max-width: 760px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,.12);
  border: 1px solid rgba(255,255,255,.2);
  color: var(--white);
  font-size: .82rem;
  font-weight: 500;
  padding: 7px 16px;
  border-radius: 100px;
  margin-bottom: 28px;
  letter-spacing: .06em;
}
.badge-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--gold);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: .7; transform: scale(1.3); }
}

.hero-title {
  font-size: clamp(2.4rem, 5.5vw, 4rem);
  font-weight: 900;
  color: var(--white);
  line-height: 1.15;
  margin-bottom: 24px;
  letter-spacing: -.01em;
}
.highlight {
  color: var(--gold);
  position: relative;
}

.hero-subtitle {
  font-size: 1.1rem;
  color: rgba(255,255,255,.82);
  max-width: 560px;
  margin-bottom: 40px;
  line-height: 1.8;
}

.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 60px; }

.hero-stats {
  display: flex;
  align-items: center;
  gap: 0;
  background: rgba(255,255,255,.10);
  border: 1px solid rgba(255,255,255,.15);
  border-radius: var(--radius);
  padding: 20px 32px;
  backdrop-filter: blur(8px);
  flex-wrap: wrap;
}
.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 0 28px;
  flex: 1;
  min-width: 100px;
}
.stat-item:first-child { padding-left: 0; }
.stat-item:last-child { padding-right: 0; }
.stat-num {
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--white);
  line-height: 1;
  font-family: 'Inter', sans-serif;
}
.stat-unit { font-size: 1.4rem; font-weight: 700; color: var(--gold); display: inline; }
.stat-label { font-size: .78rem; color: rgba(255,255,255,.65); margin-top: 4px; text-align: center; }
.stat-divider { width: 1px; height: 44px; background: rgba(255,255,255,.18); flex-shrink: 0; }

.hero-scroll-hint {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: rgba(255,255,255,.45);
  font-size: .75rem;
  z-index: 3;
}
.scroll-arrow {
  width: 20px; height: 20px;
  border-right: 2px solid rgba(255,255,255,.4);
  border-bottom: 2px solid rgba(255,255,255,.4);
  transform: rotate(45deg);
  animation: bounce 2s infinite;
}
@keyframes bounce {
  0%, 100% { transform: rotate(45deg) translateY(0); }
  50% { transform: rotate(45deg) translateY(5px); }
}

/* ===== TRUST BAR ===== */
.trust-bar {
  background: var(--blue-50);
  border-bottom: 1px solid var(--gray-300);
  padding: 16px 0;
}
.trust-bar-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 40px;
  flex-wrap: wrap;
}
.trust-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: .85rem;
  font-weight: 500;
  color: var(--blue-800);
}

/* ===== SECTION BASE ===== */
.section { padding: 96px 0; }
.section-gray { background: var(--gray-100); }
.section-dark {
  background: linear-gradient(160deg, var(--blue-900) 0%, var(--blue-800) 100%);
}

.section-header {
  text-align: center;
  margin-bottom: 64px;
}
.section-header-light { text-align: center; margin-bottom: 56px; }

.section-tag {
  display: inline-block;
  background: var(--blue-50);
  color: var(--blue-800);
  font-size: .78rem;
  font-weight: 700;
  padding: 5px 14px;
  border-radius: 100px;
  letter-spacing: .1em;
  text-transform: uppercase;
  margin-bottom: 14px;
  border: 1px solid var(--blue-100);
}
.section-tag-light {
  background: rgba(255,255,255,.12);
  color: rgba(255,255,255,.9);
  border-color: rgba(255,255,255,.2);
}

.section-title {
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  font-weight: 800;
  color: var(--gray-900);
  line-height: 1.25;
  margin-bottom: 14px;
}
.section-title.text-white { color: var(--white); }
.section-subtitle {
  font-size: 1rem;
  color: var(--gray-500);
  max-width: 520px;
  margin: 0 auto;
}
.section-subtitle.text-muted { color: rgba(255,255,255,.6); }

/* ===== ABOUT ===== */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  align-items: center;
}
.about-img-wrapper {
  position: relative;
  border-radius: var(--radius);
  overflow: visible;
}
.about-img-placeholder {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.about-badge-float {
  position: absolute;
  bottom: -20px;
  right: -20px;
  background: var(--white);
  border: 1px solid var(--gray-300);
  border-radius: var(--radius);
  padding: 16px 24px;
  text-align: center;
  box-shadow: var(--shadow-md);
  display: flex;
  flex-direction: column;
  align-items: center;
}
.about-badge-year { font-size: .7rem; color: var(--gray-500); font-weight: 600; letter-spacing: .08em; }
.about-badge-num { font-size: 2rem; font-weight: 800; color: var(--blue-800); line-height: 1.1; }
.about-badge-sub { font-size: .72rem; color: var(--gray-500); }

.about-desc {
  color: var(--gray-500);
  margin-bottom: 16px;
  font-size: .97rem;
  line-height: 1.8;
}

.about-pillars {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-top: 32px;
}
.pillar {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}
.pillar-icon {
  flex-shrink: 0;
  width: 44px; height: 44px;
  background: var(--blue-50);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--blue-800);
}
.pillar strong { display: block; font-size: .97rem; color: var(--gray-900); margin-bottom: 2px; }
.pillar p { font-size: .85rem; color: var(--gray-500); margin: 0; }

/* ===== SERVICES ===== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.service-card {
  background: var(--white);
  border: 1px solid var(--gray-300);
  border-radius: var(--radius);
  padding: 32px 28px;
  position: relative;
  transition: all var(--transition);
}
.service-card:hover {
  border-color: var(--blue-600);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}
.service-card-featured {
  border-color: var(--blue-800);
  background: var(--blue-50);
}
.service-featured-badge {
  position: absolute;
  top: 16px; right: 16px;
  background: var(--gold);
  color: var(--white);
  font-size: .72rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 100px;
  letter-spacing: .06em;
}

.service-icon {
  width: 60px; height: 60px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}
.service-icon-1 { background: #EEF2F8; color: var(--blue-800); }
.service-icon-2 { background: #1A3A6B; color: var(--white); }
.service-icon-3 { background: #FFF8E7; color: #B07D1A; }
.service-icon-4 { background: #F0FDF4; color: #16A34A; }
.service-icon-5 { background: #FFF1F2; color: #DC2626; }
.service-icon-6 { background: #F5F3FF; color: #7C3AED; }

.service-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 10px;
}
.service-card p {
  font-size: .87rem;
  color: var(--gray-500);
  line-height: 1.75;
  margin-bottom: 18px;
}
.service-list { display: flex; flex-direction: column; gap: 7px; }
.service-list li {
  font-size: .83rem;
  color: var(--gray-700);
  display: flex;
  align-items: center;
  gap: 8px;
}
.service-list li::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--blue-600);
  flex-shrink: 0;
}

/* ===== MARKETS ===== */
.markets-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-bottom: 52px;
}
.market-card {
  border-radius: var(--radius);
  padding: 36px 28px;
  border: 1px solid var(--gray-300);
  transition: all var(--transition);
}
.market-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-3px);
}
.market-tw { border-top: 4px solid var(--gold); }
.market-sea { border-top: 4px solid #16A34A; }
.market-eu { border-top: 4px solid var(--blue-600); }

.market-flag { font-size: 2.4rem; margin-bottom: 14px; }
.market-card h3 {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--gray-900);
  margin-bottom: 4px;
}
.market-role { font-size: .8rem; color: var(--gray-500); font-weight: 600; margin-bottom: 12px; letter-spacing: .04em; }
.market-card p { font-size: .88rem; color: var(--gray-500); line-height: 1.75; margin-bottom: 18px; }

.market-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.market-tags span {
  font-size: .76rem;
  font-weight: 600;
  background: var(--blue-50);
  color: var(--blue-800);
  padding: 3px 10px;
  border-radius: 100px;
  border: 1px solid var(--blue-100);
}

.world-map-wrapper { border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-sm); }

/* ===== PARTNERS ===== */
.partners-logo-strip {
  overflow: hidden;
  background: rgba(255,255,255,.07);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: var(--radius);
  padding: 20px 0;
  margin-bottom: 52px;
}
.partners-track {
  display: flex;
  gap: 48px;
  animation: marquee 22s linear infinite;
  width: max-content;
}
@keyframes marquee {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}
.partner-logo-item {
  font-size: .9rem;
  font-weight: 700;
  color: rgba(255,255,255,.5);
  letter-spacing: .08em;
  text-transform: uppercase;
  white-space: nowrap;
  padding: 0 24px;
  border-right: 1px solid rgba(255,255,255,.12);
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 52px;
}
.testimonial-card {
  background: rgba(255,255,255,.07);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: var(--radius);
  padding: 28px;
}
.testimonial-featured {
  background: rgba(255,255,255,.12);
  border-color: var(--gold);
}
.testimonial-stars { color: var(--gold); font-size: 1rem; margin-bottom: 14px; letter-spacing: 2px; }
.testimonial-text {
  font-size: .9rem;
  color: rgba(255,255,255,.82);
  line-height: 1.8;
  margin-bottom: 20px;
  font-style: italic;
}
.testimonial-author { display: flex; align-items: center; gap: 12px; }
.author-avatar {
  width: 40px; height: 40px;
  border-radius: 50%;
  background: var(--blue-600);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: .9rem;
  flex-shrink: 0;
}
.testimonial-author strong { display: block; font-size: .92rem; color: var(--white); }
.testimonial-author span { font-size: .78rem; color: rgba(255,255,255,.55); }

.certs-row {
  display: flex;
  justify-content: center;
  gap: 48px;
  flex-wrap: wrap;
}
.cert-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  color: rgba(255,255,255,.75);
  font-size: .82rem;
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
}
.cert-icon {
  width: 64px; height: 64px;
  border-radius: 50%;
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.16);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gold);
}

/* ===== CONTACT ===== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 420px;
  gap: 52px;
  align-items: start;
}

.contact-form-wrapper {
  background: var(--white);
  border: 1px solid var(--gray-300);
  border-radius: var(--radius);
  padding: 40px;
  box-shadow: var(--shadow-sm);
}

.contact-form { display: flex; flex-direction: column; gap: 20px; }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }

.form-group { display: flex; flex-direction: column; gap: 6px; }

.form-group label {
  font-size: .85rem;
  font-weight: 600;
  color: var(--gray-700);
}
.required { color: #DC2626; }

.form-group input,
.form-group select,
.form-group textarea {
  padding: 11px 14px;
  border: 1.5px solid var(--gray-300);
  border-radius: var(--radius-sm);
  font-size: .92rem;
  font-family: inherit;
  color: var(--gray-900);
  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(--blue-600);
  box-shadow: 0 0 0 3px rgba(37,99,200,.12);
}
.form-group textarea { resize: vertical; min-height: 120px; }

.form-privacy { display: flex; align-items: flex-start; gap: 10px; }
.checkbox-label {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: .83rem;
  color: var(--gray-500);
  cursor: pointer;
  line-height: 1.5;
}
.checkbox-label input { margin-top: 2px; accent-color: var(--blue-800); }
.privacy-link { color: var(--blue-700); text-decoration: underline; }

.form-success {
  display: none;
  align-items: center;
  gap: 10px;
  background: #F0FDF4;
  border: 1px solid #86EFAC;
  color: #15803D;
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  font-size: .9rem;
  font-weight: 600;
}

.contact-info-card {
  background: var(--white);
  border: 1px solid var(--gray-300);
  border-radius: var(--radius);
  padding: 32px;
  margin-bottom: 20px;
  box-shadow: var(--shadow-sm);
}
.contact-info-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 24px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--gray-300);
}
.contact-info-items { display: flex; flex-direction: column; gap: 20px; }
.contact-info-item { display: flex; gap: 14px; align-items: flex-start; }
.info-icon {
  flex-shrink: 0;
  width: 38px; height: 38px;
  background: var(--blue-50);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--blue-800);
}
.info-label {
  display: block;
  font-size: .75rem;
  color: var(--gray-500);
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
  margin-bottom: 2px;
}
.info-value {
  font-size: .9rem;
  color: var(--gray-700);
  line-height: 1.5;
}
a.info-value:hover { color: var(--blue-700); }

.contact-languages {
  background: var(--blue-50);
  border: 1px solid var(--blue-100);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 20px;
}
.contact-languages h4 {
  font-size: .82rem;
  font-weight: 700;
  color: var(--blue-800);
  text-transform: uppercase;
  letter-spacing: .08em;
  margin-bottom: 12px;
}
.lang-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.lang-tags span {
  font-size: .8rem;
  background: var(--white);
  border: 1px solid var(--blue-100);
  color: var(--blue-800);
  padding: 4px 10px;
  border-radius: 100px;
  font-weight: 500;
}

.contact-response {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  background: #FFFBEB;
  border: 1px solid #FDE68A;
  border-radius: var(--radius);
  padding: 18px;
}
.response-icon { font-size: 1.4rem; flex-shrink: 0; }
.contact-response strong { display: block; font-size: .92rem; color: var(--gray-900); margin-bottom: 4px; }
.contact-response p { font-size: .83rem; color: var(--gray-500); margin: 0; line-height: 1.6; }

/* ===== FOOTER ===== */
.footer {
  background: var(--gray-900);
  color: rgba(255,255,255,.65);
  padding: 60px 0 32px;
}
.footer-inner {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,.08);
  margin-bottom: 28px;
}
.footer-brand .logo { margin-bottom: 16px; }
.footer-brand .logo-zh { color: var(--white); }
.footer-brand .logo-en { color: rgba(255,255,255,.45); }
.footer-tagline { font-size: .88rem; margin-bottom: 14px; color: rgba(255,255,255,.55); }
.footer-copy { font-size: .78rem; color: rgba(255,255,255,.35); line-height: 1.7; }

.footer-links-group h4 {
  font-size: .8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: rgba(255,255,255,.8);
  margin-bottom: 16px;
}
.footer-links-group ul { display: flex; flex-direction: column; gap: 9px; }
.footer-links-group a {
  font-size: .85rem;
  color: rgba(255,255,255,.5);
  transition: color var(--transition);
}
.footer-links-group a:hover { color: var(--white); }

.footer-social {
  display: flex;
  gap: 12px;
  margin-top: 20px;
}
.footer-social a {
  width: 36px; height: 36px;
  border-radius: 8px;
  border: 1px solid rgba(255,255,255,.15);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,.5);
  transition: all var(--transition);
}
.footer-social a:hover {
  color: var(--white);
  border-color: rgba(255,255,255,.4);
  background: rgba(255,255,255,.08);
}

/* ===== BACK TO TOP ===== */
.back-to-top {
  position: fixed;
  bottom: 28px; right: 28px;
  width: 46px; height: 46px;
  border-radius: 50%;
  background: var(--blue-800);
  color: var(--white);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  opacity: 0;
  transform: translateY(16px);
  transition: all var(--transition);
  z-index: 999;
}
.back-to-top.visible {
  opacity: 1;
  transform: translateY(0);
}
.back-to-top:hover { background: var(--blue-900); transform: translateY(-2px); }

/* ===== ANIMATIONS ===== */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .6s ease, transform .6s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .about-grid { gap: 48px; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .nav-links { display: none; flex-direction: column; position: absolute; top: 70px; left: 0; right: 0; background: var(--white); border-bottom: 1px solid var(--gray-300); padding: 20px 24px; gap: 18px; }
  .nav-links.open { display: flex; }
  .nav-cta { display: none; }
  .hamburger { display: flex; }

  .about-grid { grid-template-columns: 1fr; }
  .about-visual { display: none; }
  .services-grid { grid-template-columns: 1fr; }
  .markets-grid { grid-template-columns: 1fr; }
  .testimonials-grid { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; gap: 32px; }
  .hero-stats { padding: 16px; gap: 0; }
  .stat-item { padding: 8px 14px; }
  .stat-divider { display: none; }
  .form-row { grid-template-columns: 1fr; }
  .trust-bar-inner { gap: 20px; }
  .certs-row { gap: 28px; }
}

@media (max-width: 480px) {
  .hero-actions { flex-direction: column; }
  .btn-lg { width: 100%; justify-content: center; }
}