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

:root {
  --primary: #1565C0;
  --primary-light: #42A5F5;
  --primary-dark: #0D47A1;
  --accent: #0288D1;
  --bg-light: #F0F7FF;
  --bg-white: #FFFFFF;
  --text-dark: #1A2332;
  --text-mid: #4A5568;
  --text-light: #718096;
  --border: #E2E8F0;
  --shadow: 0 4px 24px rgba(21, 101, 192, 0.08);
  --shadow-lg: 0 8px 40px rgba(21, 101, 192, 0.12);
  --radius: 12px;
  --radius-sm: 8px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --max-width: 1200px;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: var(--text-dark);
  background: var(--bg-white);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition);
}

img {
  max-width: 100%;
  height: auto;
}

ul, ol {
  list-style: none;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== Header ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}

.site-header.scrolled {
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.06);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.header-logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.header-logo img {
  height: 44px;
  width: auto;
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 36px;
}

.header-nav a {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-mid);
  white-space: nowrap;
  position: relative;
  padding: 4px 0;
}

.header-nav a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: var(--transition);
  border-radius: 1px;
}

.header-nav a:hover,
.header-nav a.active {
  color: var(--primary);
}

.header-nav a:hover::after,
.header-nav a.active::after {
  width: 100%;
}

.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  background: none;
  border: none;
}

.mobile-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text-dark);
  border-radius: 2px;
  transition: var(--transition);
}

/* ===== Hero Section ===== */
.hero {
  padding: 140px 0 100px;
  background: linear-gradient(135deg, #F0F7FF 0%, #E3F2FD 50%, #BBDEFB 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(33, 150, 243, 0.08) 0%, transparent 70%);
  border-radius: 50%;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(21, 101, 192, 0.06) 0%, transparent 70%);
  border-radius: 50%;
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.hero-badge {
  display: inline-block;
  padding: 6px 20px;
  background: rgba(21, 101, 192, 0.08);
  color: var(--primary);
  border-radius: 20px;
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 24px;
  border: 1px solid rgba(21, 101, 192, 0.12);
}

.hero h1 {
  font-size: 48px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--text-dark);
  margin-bottom: 20px;
  letter-spacing: -0.5px;
}

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

.hero p {
  font-size: 18px;
  color: var(--text-mid);
  line-height: 1.8;
  margin-bottom: 40px;
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
}

.hero-btns {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 4px 16px rgba(21, 101, 192, 0.3);
}

.btn-primary:hover {
  background: var(--primary-dark);
  box-shadow: 0 6px 24px rgba(21, 101, 192, 0.4);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
}

.btn-outline:hover {
  background: var(--primary);
  color: #fff;
  transform: translateY(-2px);
}

/* ===== Section Common ===== */
.section {
  padding: 80px 0;
}

.section-alt {
  background: var(--bg-light);
}

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

.section-header h2 {
  font-size: 36px;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 16px;
  letter-spacing: -0.3px;
}

.section-header p {
  font-size: 16px;
  color: var(--text-light);
  max-width: 560px;
  margin: 0 auto;
  line-height: 1.8;
}

.section-header .line {
  width: 48px;
  height: 3px;
  background: var(--primary);
  margin: 16px auto 0;
  border-radius: 2px;
}

/* ===== Features Grid ===== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.feature-card {
  background: var(--bg-white);
  border-radius: var(--radius);
  padding: 36px 28px;
  border: 1px solid var(--border);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--primary-light));
  opacity: 0;
  transition: var(--transition);
}

.feature-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
  border-color: transparent;
}

.feature-card:hover::before {
  opacity: 1;
}

.feature-icon {
  width: 56px;
  height: 56px;
  background: var(--bg-light);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-size: 24px;
  color: var(--primary);
}

.feature-card h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--text-dark);
}

.feature-card p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.7;
}

/* ===== Stats ===== */
.stats-section {
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
  padding: 60px 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  text-align: center;
}

.stat-item h3 {
  font-size: 42px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
}

.stat-item p {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.8);
}

/* ===== Services ===== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.service-card {
  background: var(--bg-white);
  border-radius: var(--radius);
  padding: 32px;
  border: 1px solid var(--border);
  transition: var(--transition);
}

.service-card:hover {
  box-shadow: var(--shadow);
  border-color: var(--primary-light);
}

.service-card h3 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--text-dark);
}

.service-card p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.8;
  margin-bottom: 16px;
}

.service-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.service-tags span {
  padding: 4px 12px;
  background: var(--bg-light);
  color: var(--primary);
  border-radius: 4px;
  font-size: 12px;
  font-weight: 500;
}

/* ===== Cases ===== */
.cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.case-card {
  background: var(--bg-white);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: var(--transition);
}

.case-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.case-thumb {
  height: 180px;
  background: linear-gradient(135deg, var(--bg-light), #E3F2FD);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 48px;
  color: var(--primary-light);
}

.case-body {
  padding: 24px;
}

.case-body h3 {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-dark);
}

.case-body p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.7;
  margin-bottom: 16px;
}

.case-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.case-tag {
  padding: 4px 12px;
  background: var(--bg-light);
  color: var(--primary);
  border-radius: 4px;
  font-size: 12px;
  font-weight: 500;
}

.case-result {
  font-size: 13px;
  color: var(--primary);
  font-weight: 600;
}

/* ===== News ===== */
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.news-card {
  background: var(--bg-white);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: var(--transition);
}

.news-card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-4px);
}

.news-thumb {
  height: 160px;
  background: linear-gradient(135deg, var(--bg-light), #E3F2FD);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 36px;
  color: var(--primary-light);
}

.news-body {
  padding: 24px;
}

.news-date {
  font-size: 13px;
  color: var(--text-light);
  margin-bottom: 8px;
}

.news-body h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--text-dark);
  line-height: 1.5;
}

.news-body p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ===== News Detail ===== */
.news-detail {
  padding: 120px 0 80px;
}

.news-detail-header {
  max-width: 800px;
  margin: 0 auto 40px;
  text-align: center;
}

.news-detail-header h1 {
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 16px;
  line-height: 1.4;
}

.news-detail-meta {
  font-size: 14px;
  color: var(--text-light);
}

.news-detail-content {
  max-width: 800px;
  margin: 0 auto;
  font-size: 16px;
  line-height: 2;
  color: var(--text-mid);
}

.news-detail-content h2 {
  font-size: 24px;
  font-weight: 600;
  color: var(--text-dark);
  margin: 40px 0 16px;
}

.news-detail-content h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--text-dark);
  margin: 32px 0 12px;
}

.news-detail-content p {
  margin-bottom: 20px;
}

.news-detail-content ul,
.news-detail-content ol {
  margin: 16px 0;
  padding-left: 24px;
}

.news-detail-content li {
  margin-bottom: 8px;
  list-style: disc;
}

.news-back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--primary);
  font-weight: 500;
  margin-bottom: 32px;
  cursor: pointer;
}

.news-back:hover {
  color: var(--primary-dark);
}

/* ===== About Page ===== */
.about-hero {
  padding: 140px 0 80px;
  background: linear-gradient(135deg, #F0F7FF 0%, #E3F2FD 100%);
}

.about-hero h1 {
  font-size: 42px;
  font-weight: 700;
  text-align: center;
  margin-bottom: 16px;
}

.about-hero p {
  font-size: 18px;
  color: var(--text-mid);
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
}

.about-content {
  max-width: 800px;
  margin: 0 auto;
}

.about-content h2 {
  font-size: 24px;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--text-dark);
}

.about-content p {
  font-size: 16px;
  color: var(--text-mid);
  line-height: 2;
  margin-bottom: 24px;
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 40px;
}

.value-card {
  text-align: center;
  padding: 32px 24px;
  background: var(--bg-light);
  border-radius: var(--radius);
}

.value-card .icon {
  font-size: 36px;
  margin-bottom: 16px;
}

.value-card h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
}

.value-card p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.7;
}

/* ===== Contact Page ===== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.contact-info-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.contact-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.contact-item .icon {
  width: 48px;
  height: 48px;
  background: var(--bg-light);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: var(--primary);
  flex-shrink: 0;
}

.contact-item h4 {
  font-size: 14px;
  color: var(--text-light);
  margin-bottom: 4px;
  font-weight: 500;
}

.contact-item p {
  font-size: 16px;
  color: var(--text-dark);
  font-weight: 500;
}

.contact-form {
  background: var(--bg-white);
  border-radius: var(--radius);
  padding: 36px;
  border: 1px solid var(--border);
}

.contact-form h3 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 24px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-mid);
  margin-bottom: 8px;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 15px;
  transition: var(--transition);
  background: var(--bg-white);
  color: var(--text-dark);
  font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(21, 101, 192, 0.1);
}

.form-group textarea {
  min-height: 120px;
  resize: vertical;
}

/* ===== Products Page ===== */
.product-features {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
  margin-top: 40px;
}

.product-feature {
  display: flex;
  gap: 20px;
  padding: 28px;
  background: var(--bg-white);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  transition: var(--transition);
}

.product-feature:hover {
  box-shadow: var(--shadow);
  border-color: var(--primary-light);
}

.product-feature .num {
  width: 48px;
  height: 48px;
  background: var(--bg-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 700;
  color: var(--primary);
  flex-shrink: 0;
}

.product-feature h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
}

.product-feature p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.7;
}

/* ===== Pricing ===== */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.pricing-card {
  background: var(--bg-white);
  border-radius: var(--radius);
  padding: 36px 28px;
  border: 1px solid var(--border);
  text-align: center;
  transition: var(--transition);
  position: relative;
}

.pricing-card.featured {
  border-color: var(--primary);
  box-shadow: var(--shadow-lg);
  transform: scale(1.02);
}

.pricing-card.featured .pricing-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--primary);
  color: #fff;
  padding: 4px 16px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 600;
}

.pricing-card h3 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 8px;
}

.pricing-card .price {
  font-size: 14px;
  color: var(--text-light);
  margin-bottom: 24px;
}

.pricing-card ul {
  text-align: left;
  margin-bottom: 28px;
}

.pricing-card ul li {
  padding: 8px 0;
  font-size: 14px;
  color: var(--text-mid);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 8px;
}

.pricing-card ul li::before {
  content: '✓';
  color: var(--primary);
  font-weight: 700;
  font-size: 14px;
}

/* ===== CTA Section ===== */
.cta-section {
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
  padding: 80px 0;
  text-align: center;
}

.cta-section h2 {
  font-size: 32px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
}

.cta-section p {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 32px;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

.cta-section .btn-primary {
  background: #fff;
  color: var(--primary);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
}

.cta-section .btn-primary:hover {
  background: #f0f0f0;
  transform: translateY(-2px);
}

/* ===== Footer ===== */
.site-footer {
  background: #0D1B2A;
  color: rgba(255, 255, 255, 0.7);
  padding: 60px 0 0;
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand .footer-logo-text {
  font-size: 22px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  max-width: 300px;
}

.footer-col h4 {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 20px;
}

.footer-col a {
  display: block;
  font-size: 14px;
  padding: 4px 0;
  color: rgba(255, 255, 255, 0.6);
}

.footer-col a:hover {
  color: #fff;
}

.footer-bottom {
  padding: 24px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-bottom a {
  color: rgba(255, 255, 255, 0.5);
}

.footer-bottom a:hover {
  color: #fff;
}

/* ===== Page Banner ===== */
.page-banner {
  padding: 120px 0 60px;
  background: linear-gradient(135deg, #F0F7FF 0%, #E3F2FD 100%);
  text-align: center;
}

.page-banner h1 {
  font-size: 36px;
  font-weight: 700;
  margin-bottom: 12px;
}

.page-banner p {
  font-size: 16px;
  color: var(--text-light);
}

.breadcrumb {
  font-size: 14px;
  color: var(--text-light);
  margin-top: 16px;
}

.breadcrumb a {
  color: var(--primary);
}

.breadcrumb a:hover {
  text-decoration: underline;
}

/* ===== Process Steps ===== */
.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 40px;
}

.step-card {
  text-align: center;
  padding: 32px 20px;
  position: relative;
}

.step-card::after {
  content: '→';
  position: absolute;
  right: -16px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 24px;
  color: var(--primary-light);
}

.step-card:last-child::after {
  display: none;
}

.step-num {
  width: 56px;
  height: 56px;
  background: var(--bg-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  font-weight: 700;
  color: var(--primary);
  margin: 0 auto 16px;
}

.step-card h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
}

.step-card p {
  font-size: 13px;
  color: var(--text-light);
  line-height: 1.7;
}

/* ===== FAQ ===== */
.faq-list {
  max-width: 720px;
  margin: 0 auto;
}

.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
  overflow: hidden;
  transition: var(--transition);
}

.faq-item:hover {
  border-color: var(--primary-light);
}

.faq-question {
  padding: 20px 24px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--bg-white);
  transition: var(--transition);
}

.faq-question:hover {
  background: var(--bg-light);
}

.faq-question .arrow {
  transition: var(--transition);
  font-size: 12px;
  color: var(--text-light);
}

.faq-item.open .faq-question .arrow {
  transform: rotate(180deg);
}

.faq-answer {
  padding: 0 24px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
  font-size: 14px;
  color: var(--text-mid);
  line-height: 1.8;
}

.faq-item.open .faq-answer {
  padding: 0 24px 20px;
  max-height: 300px;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .features-grid,
  .cases-grid,
  .news-grid,
  .pricing-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }
  
  .footer-top {
    grid-template-columns: 1fr 1fr;
  }
  
  .process-steps {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .step-card::after {
    display: none;
  }
}

@media (max-width: 768px) {
  .header-nav {
    display: none;
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    padding: 24px;
    gap: 16px;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow);
  }
  
  .header-nav.open {
    display: flex;
  }
  
  .mobile-toggle {
    display: flex;
  }
  
  .hero h1 {
    font-size: 32px;
  }
  
  .hero p {
    font-size: 16px;
  }
  
  .features-grid,
  .services-grid,
  .cases-grid,
  .news-grid,
  .pricing-grid,
  .contact-grid,
  .product-features,
  .values-grid {
    grid-template-columns: 1fr;
  }
  
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .section-header h2 {
    font-size: 28px;
  }
  
  .footer-top {
    grid-template-columns: 1fr;
  }
  
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
  
  .process-steps {
    grid-template-columns: 1fr;
  }
  
  .pricing-card.featured {
    transform: none;
  }
}

/* ===== Animations ===== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-in {
  animation: fadeInUp 0.6s ease forwards;
}

/* ===== Scroll to top ===== */
.scroll-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 44px;
  height: 44px;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  font-size: 18px;
  display: none;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(21, 101, 192, 0.3);
  transition: var(--transition);
  z-index: 999;
}

.scroll-top:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
}

.scroll-top.visible {
  display: flex;
}