/* SeqBeacon Official Website - Modern Genomics Theme */
:root {
  --primary: #0A4F8A;
  --primary-dark: #073B68;
  --primary-light: #1A6FC0;
  --accent: #0EA5A0;
  --accent-light: #14C6C0;
  --sky: #38BDF8;
  --bg-light: #F8FAFC;
  --bg-blue: #EFF8FF;
  --text-dark: #0F172A;
  --text-body: #334155;
  --text-muted: #64748B;
  --border: #E2E8F0;
  --white: #FFFFFF;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.05);
  --shadow: 0 4px 24px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 20px 50px rgba(10, 79, 138, 0.15);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  color: var(--text-body);
  background: var(--white);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  color: var(--text-dark);
  line-height: 1.3;
  font-weight: 700;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 96px 0;
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 64px;
}

.section-label {
  display: inline-block;
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 12px;
}

.section-title {
  font-size: 36px;
  margin-bottom: 16px;
}

.section-desc {
  font-size: 18px;
  color: var(--text-muted);
}

.text-gradient {
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 999px;
  font-size: 16px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  color: var(--white);
  box-shadow: 0 8px 24px rgba(10, 79, 138, 0.28);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(10, 79, 138, 0.35);
}

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

.btn-outline:hover {
  background: var(--primary);
  color: var(--white);
}

.btn-white {
  background: var(--white);
  color: var(--primary);
}

.btn-white:hover {
  background: var(--bg-blue);
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  transition: all var(--transition);
  padding: 16px 0;
}

.header.scrolled {
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow);
  padding: 10px 0;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo img {
  height: 44px;
  width: auto;
  transition: filter var(--transition);
}

/* Logo sits on a dark hero at the top -> render white; colored once header turns white */
.header .logo img {
  filter: brightness(0) invert(1);
}

.header.scrolled .logo img {
  filter: none;
}

.nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav a {
  padding: 8px 16px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-dark);
  border-radius: 999px;
  transition: all var(--transition);
}

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

.header-cta {
  display: flex;
  align-items: center;
  gap: 16px;
}

.header-phone {
  font-size: 15px;
  font-weight: 600;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 6px;
}

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

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

/* Hero */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding-top: 88px;
  background: linear-gradient(135deg, #0A4F8A 0%, #0B6B8A 50%, #0EA5A0 100%);
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.55;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(10, 79, 138, 0.92) 0%, rgba(10, 79, 138, 0.72) 50%, rgba(14, 165, 160, 0.55) 100%);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  color: var(--white);
  max-width: 880px;
  padding: 0 24px;
}

.hero-subtitle {
  font-size: 18px;
  font-weight: 500;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 20px;
  opacity: 0.9;
}

.hero-title {
  font-size: 56px;
  color: var(--white);
  margin-bottom: 24px;
  line-height: 1.2;
}

.hero-desc {
  font-size: 20px;
  margin-bottom: 40px;
  opacity: 0.92;
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 64px;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 64px;
  flex-wrap: wrap;
}

.hero-stat {
  text-align: center;
}

.hero-stat .number {
  font-size: 44px;
  font-weight: 800;
  line-height: 1;
  margin-bottom: 8px;
}

.hero-stat .label {
  font-size: 15px;
  opacity: 0.85;
}

.scroll-hint {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  color: var(--white);
  opacity: 0.7;
  animation: bounce 2s infinite;
}

/* About */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.about-img {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.about-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.about-text h2 {
  font-size: 36px;
  margin-bottom: 20px;
}

.about-text p {
  font-size: 17px;
  margin-bottom: 16px;
  color: var(--text-body);
}

.values {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-top: 32px;
}

.value-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px;
  background: var(--bg-light);
  border-radius: var(--radius-sm);
}

.value-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 18px;
}

.value-item strong {
  display: block;
  color: var(--text-dark);
  margin-bottom: 4px;
}

.value-item span {
  font-size: 14px;
  color: var(--text-muted);
}

/* Platforms */
.platforms {
  background: var(--bg-light);
}

.platform-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

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

.platform-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: var(--accent);
}

.platform-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary) 0%, var(--accent) 100%);
}

.platform-icon {
  width: 64px;
  height: 64px;
  border-radius: 16px;
  background: linear-gradient(135deg, var(--bg-blue) 0%, #E0FDFC 100%);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  margin-bottom: 24px;
}

.platform-card h3 {
  font-size: 22px;
  margin-bottom: 12px;
}

.platform-card p {
  color: var(--text-muted);
  margin-bottom: 20px;
  font-size: 15px;
}

.platform-services {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.platform-services span {
  font-size: 13px;
  padding: 6px 12px;
  background: var(--bg-light);
  border-radius: 999px;
  color: var(--text-body);
}

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

.advantage-card {
  text-align: center;
  padding: 40px 28px;
  border-radius: var(--radius);
  background: var(--white);
  border: 1px solid var(--border);
  transition: all var(--transition);
}

.advantage-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-6px);
  border-color: transparent;
}

.advantage-card .icon {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 30px;
  margin: 0 auto 24px;
}

.advantage-card h3 {
  font-size: 20px;
  margin-bottom: 12px;
}

.advantage-card p {
  color: var(--text-muted);
  font-size: 15px;
}

/* Workflow */
.workflow {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: var(--white);
  position: relative;
  overflow: hidden;
}

.workflow .section-title,
.workflow .section-desc {
  color: var(--white);
}

.workflow-steps {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
  position: relative;
  z-index: 1;
}

.workflow-step {
  text-align: center;
  padding: 28px 16px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius);
  backdrop-filter: blur(8px);
  position: relative;
}

.workflow-step::after {
  content: '';
  position: absolute;
  top: 50%;
  right: -20px;
  width: 24px;
  height: 2px;
  background: rgba(255, 255, 255, 0.3);
}

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

.workflow-step .num {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--accent);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  margin: 0 auto 16px;
}

.workflow-step h4 {
  color: var(--white);
  font-size: 17px;
  margin-bottom: 8px;
}

.workflow-step p {
  font-size: 14px;
  opacity: 0.85;
}

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

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

.resource-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-6px);
}

.resource-card .thumb {
  height: 180px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 48px;
}

.resource-card .body {
  padding: 24px;
}

.resource-card .tag {
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 8px;
}

.resource-card h3 {
  font-size: 18px;
  margin-bottom: 10px;
}

.resource-card p {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.resource-card .link {
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

/* CTA */
.cta-banner {
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  color: var(--white);
  text-align: center;
  padding: 80px 0;
  border-radius: var(--radius);
  margin: 0 24px;
  position: relative;
  overflow: hidden;
}

.cta-banner h2 {
  color: var(--white);
  font-size: 36px;
  margin-bottom: 16px;
  position: relative;
  z-index: 1;
}

.cta-banner p {
  font-size: 18px;
  opacity: 0.92;
  margin-bottom: 32px;
  position: relative;
  z-index: 1;
}

.cta-banner .btn {
  position: relative;
  z-index: 1;
}

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 48px;
  align-items: start;
}

.contact-info h2 {
  font-size: 32px;
  margin-bottom: 20px;
}

.contact-info p {
  color: var(--text-muted);
  margin-bottom: 32px;
}

.contact-cards {
  display: grid;
  gap: 16px;
}

.contact-card {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 20px;
  background: var(--bg-light);
  border-radius: var(--radius-sm);
}

.contact-card .icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}

.contact-card strong {
  display: block;
  color: var(--text-dark);
  margin-bottom: 4px;
}

.contact-card span {
  font-size: 15px;
  color: var(--text-body);
}

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

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

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-dark);
  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-family: inherit;
  font-size: 15px;
  transition: border-color var(--transition);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

/* Footer */
.footer {
  background: var(--text-dark);
  color: #CBD5E1;
  padding: 72px 0 32px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand img {
  height: 48px;
  margin-bottom: 16px;
  filter: brightness(0) invert(1);
  opacity: 0.95;
}

.footer-brand img.qr-img {
  filter: none;
  opacity: 1;
  height: 132px;
  width: auto;
  margin-top: 20px;
  border-radius: 12px;
  box-shadow: var(--shadow-sm);
}

/* WeChat official account line in footer / contact */
.wechat-line {
  display: flex;
  align-items: center;
  gap: 10px;
}

.wechat-line .wx-icon {
  flex-shrink: 0;
  color: var(--accent);
}

.qr-wrap {
  margin-top: 16px;
}

.qr-wrap .qr-img {
  width: 132px;
  height: auto;
  border-radius: 12px;
  box-shadow: var(--shadow-sm);
  background: var(--white);
}

.qr-caption {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 8px;
}

/* WeChat article cards */
.wechat-banner {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
  justify-content: space-between;
  background: linear-gradient(135deg, #07C160 0%, #0A4F8A 130%);
  color: var(--white);
  border-radius: var(--radius);
  padding: 28px 32px;
  margin-bottom: 48px;
}

.wechat-banner .wb-text h3 {
  color: var(--white);
  font-size: 22px;
  margin-bottom: 6px;
}

.wechat-banner .wb-text p {
  opacity: 0.92;
  font-size: 15px;
}

.wechat-banner .wx-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.16);
  padding: 8px 16px;
  border-radius: 999px;
  font-weight: 600;
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  margin-bottom: 20px;
}

.footer-title {
  color: var(--white);
  font-size: 16px;
  margin-bottom: 20px;
}

.footer-links li {
  margin-bottom: 12px;
}

.footer-links a {
  font-size: 14px;
  transition: color var(--transition);
}

.footer-links a:hover {
  color: var(--accent-light);
}

.footer-contact li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  margin-bottom: 14px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 13px;
}

/* Page Hero (smaller) */
.page-hero {
  position: relative;
  padding: 160px 0 80px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  color: var(--white);
  text-align: center;
}

.page-hero-bg {
  position: absolute;
  inset: 0;
  opacity: 0.25;
}

.page-hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-hero-content {
  position: relative;
  z-index: 1;
}

.page-hero h1 {
  color: var(--white);
  font-size: 42px;
  margin-bottom: 12px;
}

.page-hero p {
  font-size: 18px;
  opacity: 0.9;
}

/* Product detail page */
.product-platform {
  padding: 80px 0;
}

.product-platform:nth-child(even) {
  background: var(--bg-light);
}

.platform-detail {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 56px;
  align-items: center;
}

.platform-detail.reverse {
  direction: rtl;
}

.platform-detail.reverse > * {
  direction: ltr;
}

.platform-visual {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.platform-visual img {
  width: 100%;
  height: auto;
}

/* Clean gradient visual card replacing cluttered catalog images */
.platform-visual-card {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  color: var(--white);
  min-height: 380px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  padding: 48px 44px;
  position: relative;
}

.platform-visual-card .pv-num {
  position: absolute;
  top: 24px;
  right: 32px;
  font-size: 96px;
  font-weight: 800;
  opacity: 0.16;
  line-height: 1;
}

.platform-visual-card .pv-icon {
  font-size: 72px;
  margin-bottom: 24px;
  filter: drop-shadow(0 6px 16px rgba(0, 0, 0, 0.25));
}

.platform-visual-card h3 {
  color: var(--white);
  font-size: 28px;
  margin-bottom: 14px;
  line-height: 1.3;
}

.platform-visual-card p {
  font-size: 15px;
  opacity: 0.92;
  line-height: 1.8;
  max-width: 320px;
}

/* Clickable service items */
.service-list a.service-link {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 12px 16px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 15px;
  color: var(--text-body);
  transition: all var(--transition);
}

.service-list a.service-link .check {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--accent);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  flex-shrink: 0;
}

.service-list a.service-link .sv-name {
  flex: 1;
}

.service-list a.service-link .sv-arrow {
  opacity: 0;
  transform: translateX(-4px);
  transition: all var(--transition);
  color: var(--primary);
  font-weight: 700;
}

.service-list a.service-link:hover {
  border-color: var(--accent);
  background: var(--bg-blue);
  color: var(--primary);
  box-shadow: var(--shadow-sm);
  transform: translateY(-2px);
}

.service-list a.service-link:hover .sv-arrow {
  opacity: 1;
  transform: translateX(0);
}

.platform-detail h2 {
  font-size: 30px;
  margin-bottom: 12px;
}

.platform-detail .subtitle {
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 16px;
  display: block;
}

.platform-detail p {
  color: var(--text-muted);
  margin-bottom: 24px;
}

.service-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.service-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  background: var(--white);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  font-size: 15px;
}

.service-list .check {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--accent);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  flex-shrink: 0;
}

.brochure-section {
  padding: 80px 0;
  text-align: center;
}

.brochure-section img {
  max-width: 900px;
  margin: 0 auto;
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
}

/* Product overview grid (replaces cluttered catalog image) */
.product-overview {
  display: flex;
  flex-direction: column;
  gap: 32px;
  text-align: left;
}

.po-group {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 32px;
  box-shadow: var(--shadow-sm);
}

.po-group-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 20px;
}

.po-group-title .po-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
}

.po-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.po-grid a {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 14px;
  background: var(--bg-light);
  border-radius: var(--radius-sm);
  font-size: 14px;
  color: var(--text-body);
  transition: all var(--transition);
}

.po-grid a .po-check {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--accent);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  flex-shrink: 0;
}

.po-grid a .po-arrow {
  opacity: 0;
  transform: translateX(-4px);
  margin-left: auto;
  color: var(--primary);
  font-weight: 700;
  transition: all var(--transition);
}

.po-grid a:hover {
  background: var(--bg-blue);
  color: var(--primary);
  transform: translateY(-2px);
}

.po-grid a:hover .po-arrow {
  opacity: 1;
  transform: translateX(0);
}

@media (max-width: 768px) {
  .po-grid {
    grid-template-columns: 1fr;
  }
}

/* Animations */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
  40% { transform: translateX(-50%) translateY(-10px); }
  60% { transform: translateX(-50%) translateY(-5px); }
}

/* Responsive */
@media (max-width: 1024px) {
  .platform-grid,
  .advantage-grid,
  .resource-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .workflow-steps {
    grid-template-columns: repeat(3, 1fr);
  }

  .workflow-step:nth-child(3)::after {
    display: none;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .section {
    padding: 64px 0;
  }

  .section-title,
  .about-text h2,
  .page-hero h1 {
    font-size: 28px;
  }

  .hero-title {
    font-size: 36px;
  }

  .hero-desc {
    font-size: 17px;
  }

  .hero-stats {
    gap: 32px;
  }

  .about-grid,
  .platform-detail,
  .platform-detail.reverse,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .platform-grid,
  .advantage-grid,
  .resource-grid,
  .workflow-steps {
    grid-template-columns: 1fr;
  }

  .workflow-step::after {
    display: none;
  }

  .values,
  .service-list,
  .form-row {
    grid-template-columns: 1fr;
  }

  .nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 320px;
    height: 100vh;
    background: var(--white);
    flex-direction: column;
    align-items: flex-start;
    padding: 96px 28px 28px;
    box-shadow: var(--shadow-lg);
    transition: right var(--transition);
  }

  .nav.open {
    right: 0;
  }

  .nav a {
    width: 100%;
    padding: 14px 0;
    border-radius: 0;
    border-bottom: 1px solid var(--border);
  }

  .mobile-menu-btn {
    display: flex;
    z-index: 1100;
  }

  .header-cta .btn,
  .header-phone {
    display: none;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .cta-banner {
    margin: 0;
    border-radius: 0;
  }
}