/* =============================================
   广东粤智通科技有限公司 官网样式
   主色调：科技蓝  #1a56db / #0d3d9c
   ============================================= */

:root {
  --primary: #1a56db;
  --primary-dark: #0d3d9c;
  --primary-light: #3b82f6;
  --accent: #06b6d4;
  --text-dark: #0f172a;
  --text-body: #334155;
  --text-muted: #64748b;
  --bg-light: #f8fafc;
  --bg-white: #ffffff;
  --border: #e2e8f0;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.10);
  --shadow-lg: 0 10px 40px rgba(0,0,0,0.12);
  --radius: 8px;
  --radius-lg: 16px;
  --transition: all 0.3s ease;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: "Microsoft YaHei", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
  color: var(--text-body);
  background: var(--bg-white);
  line-height: 1.7;
  font-size: 15px;
}

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ========== NAVBAR ========== */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.97);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}
.navbar.scrolled {
  box-shadow: 0 2px 20px rgba(26,86,219,0.10);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
}
.nav-logo img {
  height: 44px;
  width: 44px;
  object-fit: contain;
}
.nav-logo .brand-name {
  font-size: 16px;
  font-weight: 700;
  color: var(--primary-dark);
  line-height: 1.3;
  white-space: nowrap;
}
.nav-logo .brand-sub {
  font-size: 11px;
  color: var(--text-muted);
  font-weight: 400;
}
.nav-menu {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-menu a {
  padding: 8px 16px;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-body);
  transition: var(--transition);
  position: relative;
}
.nav-menu a:hover,
.nav-menu a.active {
  color: var(--primary);
  background: rgba(26,86,219,0.06);
}
.nav-menu a.active::after {
  content: '';
  position: absolute;
  bottom: 2px; left: 50%;
  transform: translateX(-50%);
  width: 20px; height: 2px;
  background: var(--primary);
  border-radius: 2px;
}
.nav-cta {
  background: var(--primary) !important;
  color: #fff !important;
  padding: 8px 20px !important;
  border-radius: 6px !important;
}
.nav-cta:hover {
  background: var(--primary-dark) !important;
}
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
}
.nav-toggle span {
  display: block;
  width: 24px; height: 2px;
  background: var(--text-dark);
  border-radius: 2px;
  transition: var(--transition);
}

/* ========== HERO ========== */
.hero {
  min-height: 100vh;
  background: linear-gradient(135deg, #0d3d9c 0%, #1a56db 40%, #06b6d4 100%);
  display: flex;
  align-items: center;
  padding: 100px 0 60px;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -30%; right: -10%;
  width: 600px; height: 600px;
  background: rgba(255,255,255,0.04);
  border-radius: 50%;
}
.hero::after {
  content: '';
  position: absolute;
  bottom: -20%; left: -5%;
  width: 400px; height: 400px;
  background: rgba(255,255,255,0.04);
  border-radius: 50%;
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 680px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.2);
  color: #fff;
  font-size: 13px;
  padding: 6px 14px;
  border-radius: 20px;
  margin-bottom: 24px;
  backdrop-filter: blur(8px);
}
.hero-badge::before {
  content: '';
  width: 6px; height: 6px;
  background: #4ade80;
  border-radius: 50%;
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%,100% { opacity: 1; }
  50% { opacity: 0.4; }
}
.hero h1 {
  font-size: clamp(32px, 5vw, 52px);
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
  margin-bottom: 20px;
  letter-spacing: -0.5px;
}
.hero h1 span {
  background: linear-gradient(90deg, #7dd3fc, #a78bfa);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-desc {
  font-size: 17px;
  color: rgba(255,255,255,0.85);
  margin-bottom: 36px;
  line-height: 1.8;
}
.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 40px;
}
.hero-tag {
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.2);
  color: #fff;
  font-size: 13px;
  padding: 6px 14px;
  border-radius: 20px;
}
.hero-btns {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #fff;
  color: var(--primary-dark);
  font-size: 15px;
  font-weight: 600;
  padding: 14px 28px;
  border-radius: var(--radius);
  transition: var(--transition);
  box-shadow: 0 4px 16px rgba(0,0,0,0.15);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.2);
}
.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 2px solid rgba(255,255,255,0.6);
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  padding: 12px 28px;
  border-radius: var(--radius);
  transition: var(--transition);
}
.btn-outline:hover {
  background: rgba(255,255,255,0.1);
  border-color: #fff;
}
.hero-visual {
  position: relative;
  z-index: 2;
}
.hero-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
.stat-card {
  background: rgba(255,255,255,0.10);
  border: 1px solid rgba(255,255,255,0.18);
  border-radius: var(--radius-lg);
  padding: 24px 20px;
  backdrop-filter: blur(12px);
  text-align: center;
  transition: var(--transition);
}
.stat-card:hover {
  background: rgba(255,255,255,0.16);
  transform: translateY(-4px);
}
.stat-num {
  font-size: 36px;
  font-weight: 800;
  color: #fff;
  line-height: 1;
  margin-bottom: 6px;
}
.stat-num span {
  font-size: 18px;
  color: rgba(255,255,255,0.7);
}
.stat-label {
  font-size: 13px;
  color: rgba(255,255,255,0.75);
}

/* ========== SECTION COMMON ========== */
.section {
  padding: 88px 0;
}
.section-alt {
  background: var(--bg-light);
}
.section-header {
  text-align: center;
  margin-bottom: 56px;
}
.section-tag {
  display: inline-block;
  background: rgba(26,86,219,0.08);
  color: var(--primary);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  padding: 4px 14px;
  border-radius: 20px;
  margin-bottom: 14px;
}
.section-title {
  font-size: clamp(24px, 3.5vw, 36px);
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 14px;
  line-height: 1.3;
}
.section-desc {
  font-size: 16px;
  color: var(--text-muted);
  max-width: 560px;
  margin: 0 auto;
}

/* ========== PRODUCT CARDS ========== */
.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}
.product-card {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.product-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  transform: scaleX(0);
  transition: var(--transition);
}
.product-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-6px);
  border-color: transparent;
}
.product-card:hover::before {
  transform: scaleX(1);
}
.product-icon {
  width: 56px; height: 56px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}
.product-icon svg {
  width: 28px; height: 28px;
  stroke: #fff; fill: none;
  stroke-width: 1.8;
}
.product-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 10px;
}
.product-card p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 18px;
}
.product-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.product-tag {
  background: rgba(26,86,219,0.06);
  color: var(--primary);
  font-size: 11px;
  font-weight: 500;
  padding: 3px 10px;
  border-radius: 12px;
}

/* ========== CASE CARDS ========== */
.cases-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}
.case-card {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
}
.case-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}
.case-header {
  padding: 28px;
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  color: #fff;
}
.case-industry {
  font-size: 11px;
  background: rgba(255,255,255,0.2);
  padding: 3px 10px;
  border-radius: 12px;
  display: inline-block;
  margin-bottom: 10px;
}
.case-header h3 {
  font-size: 18px;
  font-weight: 700;
}
.case-body {
  padding: 24px 28px;
}
.case-solutions {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 16px;
}
.case-tag {
  background: var(--bg-light);
  color: var(--text-body);
  font-size: 12px;
  padding: 4px 10px;
  border-radius: 6px;
  border: 1px solid var(--border);
}
.case-result {
  font-size: 13px;
  color: var(--text-muted);
  padding-top: 14px;
  border-top: 1px solid var(--border);
}

/* ========== FEATURES / WHY US ========== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 28px;
}
.feature-item {
  text-align: center;
  padding: 32px 20px;
}
.feature-icon {
  width: 64px; height: 64px;
  background: linear-gradient(135deg, rgba(26,86,219,0.08), rgba(6,182,212,0.08));
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 18px;
  transition: var(--transition);
}
.feature-item:hover .feature-icon {
  background: linear-gradient(135deg, var(--primary), var(--accent));
}
.feature-item:hover .feature-icon svg {
  stroke: #fff;
}
.feature-icon svg {
  width: 32px; height: 32px;
  stroke: var(--primary); fill: none;
  stroke-width: 1.6;
  transition: var(--transition);
}
.feature-item h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 8px;
}
.feature-item p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ========== PARTNER LOGOS ========== */
.partners-row {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
  align-items: center;
}
.partner-item {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 24px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-muted);
  transition: var(--transition);
}
.partner-item:hover {
  color: var(--primary);
  border-color: var(--primary);
  box-shadow: var(--shadow-sm);
}

/* ========== CONTACT ========== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 48px;
  align-items: start;
}
.contact-info h2 {
  font-size: 28px;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 16px;
}
.contact-info p {
  color: var(--text-muted);
  margin-bottom: 32px;
  line-height: 1.8;
}
.contact-items { display: flex; flex-direction: column; gap: 16px; }
.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}
.contact-icon {
  width: 44px; height: 44px;
  background: rgba(26,86,219,0.08);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.contact-icon svg {
  width: 20px; height: 20px;
  stroke: var(--primary); fill: none; stroke-width: 1.8;
}
.contact-item h5 {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 2px;
}
.contact-item p {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-dark);
  margin: 0;
}
.contact-form {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: var(--shadow-md);
}
.contact-form h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 24px;
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.form-group {
  margin-bottom: 16px;
}
.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-body);
  margin-bottom: 6px;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 14px;
  font-family: inherit;
  color: var(--text-dark);
  background: var(--bg-light);
  transition: var(--transition);
  outline: none;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--primary);
  background: var(--bg-white);
  box-shadow: 0 0 0 3px rgba(26,86,219,0.08);
}
.form-group textarea { resize: vertical; min-height: 100px; }
.btn-submit {
  width: 100%;
  padding: 13px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: var(--transition);
}
.btn-submit:hover {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  box-shadow: 0 4px 16px rgba(26,86,219,0.3);
}

/* ========== FOOTER ========== */
.footer {
  background: #0d1829;
  color: rgba(255,255,255,0.7);
  padding: 64px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.8fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 48px;
}
.footer-brand img {
  height: 44px;
  width: 44px;
  object-fit: contain;
  margin-bottom: 14px;
}
.footer-brand h4 {
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 10px;
}
.footer-brand p {
  font-size: 13px;
  line-height: 1.7;
  max-width: 260px;
}
.footer-col h5 {
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 18px;
}
.footer-col ul li {
  margin-bottom: 10px;
}
.footer-col ul li a {
  font-size: 13px;
  color: rgba(255,255,255,0.6);
  transition: var(--transition);
}
.footer-col ul li a:hover {
  color: #fff;
  padding-left: 4px;
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 20px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
}
.footer-bottom a.footer-icp {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s;
}
.footer-bottom a.footer-icp:hover {
  color: #fff;
  text-decoration: underline;
}

/* ========== PAGE BANNER ========== */
.page-banner {
  background: linear-gradient(135deg, #0d3d9c, #1a56db);
  padding: 120px 0 60px;
  text-align: center;
  color: #fff;
  position: relative;
  overflow: hidden;
}
.page-banner::before {
  content: '';
  position: absolute;
  top: -50%; right: -5%;
  width: 500px; height: 500px;
  background: rgba(255,255,255,0.04);
  border-radius: 50%;
}
.page-banner h1 {
  font-size: 38px;
  font-weight: 800;
  margin-bottom: 12px;
}
.page-banner p {
  font-size: 16px;
  color: rgba(255,255,255,0.8);
  max-width: 500px;
  margin: 0 auto;
}
.breadcrumb {
  display: flex;
  justify-content: center;
  gap: 8px;
  font-size: 13px;
  color: rgba(255,255,255,0.6);
  margin-top: 16px;
}
.breadcrumb a { color: rgba(255,255,255,0.8); }
.breadcrumb a:hover { color: #fff; }
.breadcrumb span.sep { color: rgba(255,255,255,0.4); }

/* ========== ABOUT PAGE ========== */
.about-intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.about-text h2 {
  font-size: 28px;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 18px;
  line-height: 1.4;
}
.about-text p {
  color: var(--text-muted);
  line-height: 1.9;
  margin-bottom: 14px;
}
.about-metrics {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-top: 28px;
}
.metric-box {
  background: var(--bg-light);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  text-align: center;
}
.metric-num {
  font-size: 30px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
  margin-bottom: 4px;
}
.metric-label {
  font-size: 12px;
  color: var(--text-muted);
}
.about-visual {
  background: linear-gradient(135deg, #0d3d9c, #06b6d4);
  border-radius: var(--radius-lg);
  padding: 48px 36px;
  color: #fff;
}
.about-visual h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 24px;
}
.value-items { display: flex; flex-direction: column; gap: 14px; }
.value-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}
.value-dot {
  width: 8px; height: 8px;
  background: #7dd3fc;
  border-radius: 50%;
  margin-top: 6px;
  flex-shrink: 0;
}
.value-item h4 { font-size: 14px; font-weight: 600; margin-bottom: 2px; }
.value-item p { font-size: 13px; color: rgba(255,255,255,0.75); }

.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
}
.team-card {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  text-align: center;
  transition: var(--transition);
}
.team-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}
.team-avatar {
  width: 72px; height: 72px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 14px;
  font-size: 24px;
  font-weight: 700;
  color: #fff;
}
.team-card h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 4px;
}
.team-card .role {
  font-size: 13px;
  color: var(--primary);
  margin-bottom: 8px;
}
.team-card p {
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ========== TIMELINE ========== */
.timeline { position: relative; padding: 0 0 0 30px; }
.timeline::before {
  content: '';
  position: absolute;
  top: 0; left: 7px; bottom: 0;
  width: 2px;
  background: var(--border);
}
.timeline-item {
  position: relative;
  padding-bottom: 36px;
}
.timeline-item::before {
  content: '';
  position: absolute;
  left: -26px; top: 4px;
  width: 14px; height: 14px;
  background: var(--primary);
  border-radius: 50%;
  border: 2px solid #fff;
  box-shadow: 0 0 0 3px rgba(26,86,219,0.2);
}
.timeline-year {
  font-size: 13px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 4px;
}
.timeline-item h4 {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 4px;
}
.timeline-item p {
  font-size: 13px;
  color: var(--text-muted);
}

/* ========== CTA BANNER ========== */
.cta-section {
  background: linear-gradient(135deg, #0d3d9c, #1a56db);
  padding: 72px 0;
  text-align: center;
  color: #fff;
}
.cta-section h2 {
  font-size: 32px;
  font-weight: 800;
  margin-bottom: 14px;
}
.cta-section p {
  font-size: 16px;
  color: rgba(255,255,255,0.8);
  margin-bottom: 32px;
}
.cta-btns { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }

/* ========== DROPDOWN NAV ========== */
.nav-menu li {
  position: relative;
}
.nav-menu > li > a {
  display: inline-block;
}
.nav-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 200px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.12);
  padding: 8px 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: all 0.25s ease;
  z-index: 100;
}
.nav-menu > li:hover > .nav-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.nav-dropdown a {
  display: block;
  padding: 10px 18px;
  font-size: 13px;
  color: var(--text-body);
  border-radius: 0;
  white-space: nowrap;
}
.nav-dropdown a:hover {
  background: rgba(26,86,219,0.06);
  color: var(--primary);
}
.nav-dropdown a.active {
  color: var(--primary);
  background: rgba(26,86,219,0.06);
}

/* ========== RESPONSIVE ========== */
@media (max-width: 992px) {
  .hero { flex-direction: column; }
  .about-intro, .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .hero-stats { grid-template-columns: repeat(2,1fr); }
}
@media (max-width: 768px) {
  .nav-menu { display: none; flex-direction: column; position: absolute; top: 68px; left: 0; right: 0; background: #fff; padding: 16px; border-bottom: 1px solid var(--border); box-shadow: var(--shadow-md); }
  .nav-menu.open { display: flex; }
  .nav-toggle { display: flex; }
  .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
  .about-metrics { grid-template-columns: repeat(2,1fr); }
  .hero-stats { margin-top: 40px; }
  /* Mobile dropdown */
  .nav-dropdown {
    position: static;
    box-shadow: none;
    border: none;
    border-top: 1px solid var(--border);
    padding: 0 0 0 20px;
    opacity: 1;
    visibility: visible;
    transform: none;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
  }
  .nav-menu > li.dropdown-open > .nav-dropdown {
    max-height: 200px;
  }
}
@media (max-width: 480px) {
  .section { padding: 60px 0; }
  .hero-stats { grid-template-columns: 1fr 1fr; }
  .stat-num { font-size: 28px; }
}

/* ========== ANIMATIONS ========== */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}
.fade-up-delay-1 { transition-delay: 0.1s; }
.fade-up-delay-2 { transition-delay: 0.2s; }
.fade-up-delay-3 { transition-delay: 0.3s; }
.fade-up-delay-4 { transition-delay: 0.4s; }