/* ============================================
   创拓达软件 - 企业官网样式
   ============================================ */

/* ---- CSS Variables ---- */
:root {
  --primary: #0A4D8C;
  --primary-dark: #062E54;
  --primary-light: #1976D2;
  --accent: #00B4D8;
  --accent-warm: #FF6B35;
  --accent-soft: #FFF3EE;
  --bg-light: #F0F5FA;
  --bg-section: #F8FBFD;
  --bg-white: #FFFFFF;
  --text-dark: #1A2332;
  --text-body: #475569;
  --text-muted: #94A3B8;
  --border: #E2E8F0;
  --shadow-sm: 0 2px 8px rgba(10, 77, 140, 0.06);
  --shadow-md: 0 8px 30px rgba(10, 77, 140, 0.10);
  --shadow-lg: 0 20px 60px rgba(10, 77, 140, 0.15);
  --radius: 12px;
  --radius-lg: 20px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --max-width: 1200px;
  --font: "PingFang SC", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

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

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

body {
  font-family: var(--font);
  color: var(--text-body);
  background: var(--bg-white);
  line-height: 1.7;
  overflow-x: hidden;
}

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

ul {
  list-style: none;
}

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

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

.section {
  padding: 100px 0;
}

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

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

.section-tag {
  display: inline-block;
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 16px;
  padding: 6px 18px;
  background: rgba(0, 180, 216, 0.08);
  border-radius: 30px;
}

.section-title {
  font-size: 40px;
  font-weight: 800;
  color: var(--text-dark);
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}

.section-subtitle {
  font-size: 18px;
  color: var(--text-muted);
  max-width: 680px;
  margin: 0 auto;
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  font-size: 16px;
  font-weight: 600;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  font-family: var(--font);
}

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

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(10, 77, 140, 0.3);
}

.btn-accent {
  background: var(--accent-warm);
  color: #fff;
}

.btn-accent:hover {
  background: #E55A28;
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(255, 107, 53, 0.35);
}

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

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

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

.btn-white:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.btn-lg {
  padding: 16px 40px;
  font-size: 17px;
}

/* ---- Navigation ---- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 18px 0;
  transition: var(--transition);
}

.navbar.scrolled {
  background: rgba(255, 255, 255, 0.98);
  box-shadow: var(--shadow-sm);
  padding: 12px 0;
  backdrop-filter: blur(10px);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 22px;
  font-weight: 800;
  color: var(--text-dark);
}

.logo .logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 20px;
  font-weight: 800;
}

.navbar.scrolled .logo,
.navbar.scrolled .nav-links a {
  color: var(--text-dark);
}

.navbar:not(.scrolled) .logo,
.navbar:not(.scrolled) .nav-links a {
  color: #fff;
}

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

.nav-links a {
  font-size: 15px;
  font-weight: 500;
  transition: var(--transition);
  position: relative;
}

.nav-links a:hover {
  color: var(--accent) !important;
}

.nav-links a.active::after {
  content: "";
  position: absolute;
  bottom: -6px;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
}

.nav-cta {
  padding: 10px 24px !important;
  background: var(--accent-warm);
  color: #fff !important;
  border-radius: 8px;
  font-weight: 600;
}

.nav-cta:hover {
  background: #E55A28 !important;
  transform: translateY(-1px);
}

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

.mobile-toggle span {
  width: 26px;
  height: 3px;
  background: var(--text-dark);
  border-radius: 2px;
  transition: var(--transition);
}

.navbar:not(.scrolled) .mobile-toggle span {
  background: #fff;
}

/* ---- Hero ---- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, #062E54 0%, #0A4D8C 40%, #1976D2 100%);
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='60' height='60' viewBox='0 0 60 60'%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-particle {
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.05);
  animation: float 6s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-20px) rotate(180deg); }
}

.hero-content {
  position: relative;
  z-index: 2;
  color: #fff;
  max-width: 720px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 30px;
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 24px;
  backdrop-filter: blur(5px);
}

.hero-badge .dot {
  width: 8px;
  height: 8px;
  background: #4ADE80;
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.hero h1 {
  font-size: 56px;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 24px;
  letter-spacing: -1px;
}

.hero h1 .highlight {
  background: linear-gradient(135deg, #00B4D8, #00D9FF);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-desc {
  font-size: 20px;
  color: rgba(255, 255, 255, 0.82);
  margin-bottom: 40px;
  line-height: 1.8;
}

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

.hero-stats {
  display: flex;
  gap: 56px;
  margin-top: 64px;
  padding-top: 40px;
  border-top: 1px solid rgba(255, 255, 255, 0.15);
}

.hero-stat .num {
  font-size: 40px;
  font-weight: 800;
  color: #00D9FF;
}

.hero-stat .label {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
  margin-top: 4px;
}

/* ---- Product Cards Grid ---- */
.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
}

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

.product-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  transform: scaleX(0);
  transform-origin: left;
  transition: var(--transition);
}

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

.product-card:hover::before {
  transform: scaleX(1);
}

.product-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 24px;
}

.product-card h3 {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 8px;
}

.product-card .en-name {
  font-size: 13px;
  color: var(--text-muted);
  letter-spacing: 1px;
  margin-bottom: 16px;
}

.product-card p {
  font-size: 14px;
  color: var(--text-body);
  line-height: 1.7;
  margin-bottom: 20px;
}

.product-card .features {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.product-card .features span {
  font-size: 12px;
  padding: 4px 12px;
  background: var(--bg-section);
  color: var(--primary);
  border-radius: 20px;
  font-weight: 500;
}

/* ---- Full Chain Diagram ---- */
.chain-section {
  background: linear-gradient(180deg, var(--bg-white) 0%, var(--bg-section) 100%);
}

.chain-diagram {
  display: flex;
  align-items: stretch;
  justify-content: center;
  gap: 0;
  flex-wrap: wrap;
  margin-top: 48px;
}

.chain-node {
  flex: 1;
  min-width: 160px;
  text-align: center;
  padding: 32px 16px;
  background: var(--bg-white);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  position: relative;
  transition: var(--transition);
  border: 2px solid transparent;
}

.chain-node:hover {
  border-color: var(--accent);
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
}

.chain-node .node-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 16px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  font-weight: 800;
  color: #fff;
}

.chain-node h4 {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 4px;
}

.chain-node .node-en {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.chain-node p {
  font-size: 13px;
  color: var(--text-body);
}

.chain-arrow {
  display: flex;
  align-items: center;
  padding: 0 8px;
  color: var(--accent);
  font-size: 24px;
}

.chain-loop {
  text-align: center;
  margin-top: 32px;
  padding: 20px 40px;
  background: linear-gradient(90deg, rgba(0, 180, 216, 0.08), rgba(10, 77, 140, 0.08));
  border-radius: var(--radius);
  display: inline-block;
  font-size: 15px;
  color: var(--primary);
  font-weight: 600;
}

/* ---- Industry Cards ---- */
.industry-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
  margin-bottom: 80px;
}

.industry-card:nth-child(even) .industry-content {
  order: 2;
}

.industry-card:nth-child(even) .industry-visual {
  order: 1;
}

.industry-content h3 {
  font-size: 32px;
  font-weight: 800;
  color: var(--text-dark);
  margin-bottom: 8px;
}

.industry-content .industry-en {
  font-size: 14px;
  color: var(--accent);
  letter-spacing: 2px;
  margin-bottom: 24px;
}

.industry-content p {
  font-size: 16px;
  color: var(--text-body);
  margin-bottom: 24px;
}

.pain-points {
  margin-bottom: 28px;
}

.pain-points li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 12px;
  font-size: 15px;
  color: var(--text-body);
}

.pain-points li::before {
  content: "▶";
  color: var(--accent-warm);
  font-size: 11px;
  margin-top: 4px;
  flex-shrink: 0;
}

.industry-visual {
  background: linear-gradient(135deg, var(--bg-section), var(--bg-white));
  border-radius: var(--radius-lg);
  padding: 48px;
  min-height: 360px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
}

.solution-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.solution-tags span {
  padding: 8px 18px;
  background: var(--primary);
  color: #fff;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
}

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

.about-text h3 {
  font-size: 32px;
  font-weight: 800;
  color: var(--text-dark);
  margin-bottom: 24px;
}

.about-text p {
  font-size: 16px;
  color: var(--text-body);
  margin-bottom: 16px;
  line-height: 1.9;
}

.about-highlights {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-top: 32px;
}

.about-highlight {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.about-highlight .icon {
  width: 44px;
  height: 44px;
  background: var(--bg-section);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}

.about-highlight .text h5 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 2px;
}

.about-highlight .text p {
  font-size: 14px;
  color: var(--text-muted);
  margin: 0;
}

/* ---- Timeline ---- */
.timeline {
  position: relative;
  padding-left: 40px;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 12px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--primary), var(--accent));
}

.timeline-item {
  position: relative;
  margin-bottom: 36px;
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: -34px;
  top: 4px;
  width: 14px;
  height: 14px;
  background: #fff;
  border: 3px solid var(--primary);
  border-radius: 50%;
}

.timeline-year {
  font-size: 18px;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 4px;
}

.timeline-content h5 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 4px;
}

.timeline-content p {
  font-size: 14px;
  color: var(--text-body);
}

/* ---- Stats Counter ---- */
.stats-bar {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  padding: 64px 0;
}

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

.stat-item .num {
  font-size: 52px;
  font-weight: 800;
  color: #00D9FF;
  line-height: 1;
}

.stat-item .suffix {
  font-size: 24px;
  color: #00D9FF;
}

.stat-item .label {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.8);
  margin-top: 12px;
}

/* ---- CTA Section ---- */
.cta-section {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  text-align: center;
  padding: 80px 0;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: "";
  position: absolute;
  top: -50%;
  right: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(0, 180, 216, 0.15), transparent);
  border-radius: 50%;
}

.cta-section h2 {
  font-size: 40px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 16px;
  position: relative;
}

.cta-section p {
  font-size: 18px;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 40px;
  position: relative;
}

.cta-section .btn {
  position: relative;
}

/* ---- Footer ---- */
.footer {
  background: var(--primary-dark);
  color: rgba(255, 255, 255, 0.7);
  padding: 72px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand .logo {
  color: #fff;
  margin-bottom: 20px;
}

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

.footer-col h5 {
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 20px;
}

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

.footer-col ul li a {
  font-size: 14px;
  transition: var(--transition);
}

.footer-col ul li a:hover {
  color: var(--accent);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 24px 0;
  text-align: center;
  font-size: 13px;
}

/* ---- Page Banner (sub pages) ---- */
.page-banner {
  background: linear-gradient(135deg, #062E54 0%, #0A4D8C 60%, #1976D2 100%);
  padding: 180px 0 100px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-banner::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='60' height='60' viewBox='0 0 60 60'%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");
}

.page-banner h1 {
  position: relative;
  font-size: 48px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 16px;
}

.page-banner p {
  position: relative;
  font-size: 18px;
  color: rgba(255, 255, 255, 0.75);
  max-width: 640px;
  margin: 0 auto;
}

.breadcrumb {
  position: relative;
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 24px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
}

.breadcrumb a:hover {
  color: #fff;
}

/* ---- Product Detail (products page) ---- */
.product-detail {
  padding: 80px 0;
  border-bottom: 1px solid var(--border);
}

.product-detail:last-child {
  border-bottom: none;
}

.product-detail-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: start;
}

.product-detail:nth-child(even) .pdi-info {
  order: 2;
}

.product-detail:nth-child(even) .pdi-visual {
  order: 1;
}

.pdi-tag {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(0, 180, 216, 0.1);
  color: var(--accent);
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 16px;
}

.pdi-info h2 {
  font-size: 36px;
  font-weight: 800;
  color: var(--text-dark);
  margin-bottom: 6px;
}

.pdi-info .pdi-en {
  font-size: 15px;
  color: var(--text-muted);
  margin-bottom: 24px;
}

.pdi-info .pdi-desc {
  font-size: 16px;
  color: var(--text-body);
  margin-bottom: 28px;
  line-height: 1.9;
}

.pdi-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.pdi-feature {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px;
  background: var(--bg-section);
  border-radius: var(--radius);
  transition: var(--transition);
}

.pdi-feature:hover {
  background: #fff;
  box-shadow: var(--shadow-sm);
}

.pdi-feature .check {
  width: 24px;
  height: 24px;
  background: var(--primary);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 14px;
  flex-shrink: 0;
  margin-top: 2px;
}

.pdi-feature .ft-text h5 {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 2px;
}

.pdi-feature .ft-text p {
  font-size: 13px;
  color: var(--text-muted);
  margin: 0;
}

.pdi-visual {
  background: var(--bg-section);
  border-radius: var(--radius-lg);
  padding: 40px;
  border: 1px solid var(--border);
}

.pdi-visual h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 20px;
}

.pdi-scenario {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  background: #fff;
  border-radius: 10px;
  margin-bottom: 12px;
  border: 1px solid var(--border);
  transition: var(--transition);
}

.pdi-scenario:hover {
  border-color: var(--accent);
  transform: translateX(6px);
}

.pdi-scenario .s-num {
  width: 32px;
  height: 32px;
  background: var(--primary);
  color: #fff;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  flex-shrink: 0;
}

.pdi-scenario .s-text {
  font-size: 14px;
  color: var(--text-body);
  font-weight: 500;
}

/* ---- Solution Page: Industry Block ---- */
.industry-block {
  padding: 80px 0;
  border-bottom: 1px solid var(--border);
}

.industry-header {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-bottom: 48px;
}

.industry-header .ih-icon {
  width: 72px;
  height: 72px;
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  flex-shrink: 0;
}

.industry-header h2 {
  font-size: 36px;
  font-weight: 800;
  color: var(--text-dark);
}

.industry-header .ih-en {
  font-size: 14px;
  color: var(--text-muted);
  letter-spacing: 2px;
}

.solution-flow {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
  margin-bottom: 48px;
}

.flow-step {
  text-align: center;
  padding: 24px 16px;
  background: var(--bg-section);
  border-radius: var(--radius);
  position: relative;
  transition: var(--transition);
}

.flow-step:hover {
  background: #fff;
  box-shadow: var(--shadow-sm);
  transform: translateY(-4px);
}

.flow-step .step-num {
  width: 36px;
  height: 36px;
  margin: 0 auto 12px;
  background: var(--primary);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 700;
}

.flow-step h5 {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 6px;
}

.flow-step p {
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.5;
}

.pain-solution-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}

.pain-box, .sol-box {
  padding: 32px;
  border-radius: var(--radius-lg);
}

.pain-box {
  background: #FFF5F0;
  border: 1px solid #FFD9CC;
}

.sol-box {
  background: #F0F7FF;
  border: 1px solid #CCE5FF;
}

.pain-box h4, .sol-box h4 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.pain-box h4 { color: #C44012; }
.sol-box h4 { color: var(--primary); }

.pain-box ul li, .sol-box ul li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 14px;
  font-size: 14px;
  line-height: 1.7;
}

.pain-box ul li::before {
  content: "✕";
  color: #E55A28;
  font-weight: 700;
  flex-shrink: 0;
}

.sol-box ul li::before {
  content: "✓";
  color: var(--primary);
  font-weight: 700;
  flex-shrink: 0;
}

/* ---- Contact Page ---- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 56px;
}

.contact-info h3 {
  font-size: 28px;
  font-weight: 800;
  color: var(--text-dark);
  margin-bottom: 24px;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 28px;
}

.contact-item .ci-icon {
  width: 48px;
  height: 48px;
  background: var(--bg-section);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  flex-shrink: 0;
}

.contact-item .ci-text h5 {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 4px;
}

.contact-item .ci-text p {
  font-size: 15px;
  color: var(--text-body);
}

.contact-form {
  background: var(--bg-section);
  border-radius: var(--radius-lg);
  padding: 40px;
  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 select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 15px;
  font-family: var(--font);
  transition: var(--transition);
  background: #fff;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0, 180, 216, 0.1);
}

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

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

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

.value-card {
  text-align: center;
  padding: 40px 28px;
  background: var(--bg-section);
  border-radius: var(--radius-lg);
  transition: var(--transition);
}

.value-card:hover {
  background: #fff;
  box-shadow: var(--shadow-md);
  transform: translateY(-6px);
}

.value-card .vc-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
}

.value-card h4 {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 12px;
}

.value-card p {
  font-size: 14px;
  color: var(--text-body);
  line-height: 1.8;
}

/* ---- Responsive ---- */
@media (max-width: 968px) {
  .nav-links {
    display: none;
  }

  .mobile-toggle {
    display: flex;
  }

  .hero h1 { font-size: 38px; }
  .hero-desc { font-size: 17px; }
  .section-title { font-size: 32px; }

  .product-detail-inner,
  .industry-card,
  .about-grid,
  .contact-grid,
  .pain-solution-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .product-detail:nth-child(even) .pdi-info,
  .product-detail:nth-child(even) .pdi-visual,
  .industry-card:nth-child(even) .industry-content,
  .industry-card:nth-child(even) .industry-visual {
    order: 0;
  }

  .solution-flow {
    grid-template-columns: repeat(2, 1fr);
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

  .pdi-features {
    grid-template-columns: 1fr;
  }

  .section { padding: 64px 0; }
}

@media (max-width: 600px) {
  .hero h1 { font-size: 30px; }
  .hero-stats { flex-wrap: wrap; gap: 28px; }
  .section-title { font-size: 26px; }
  .page-banner h1 { font-size: 34px; }
  .footer-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .chain-diagram { flex-direction: column; }
  .chain-arrow { transform: rotate(90deg); padding: 8px 0; }
}

/* ---- Animations ---- */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  animation: fadeUp 0.8s ease forwards;
}

@keyframes fadeUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.delay-1 { animation-delay: 0.15s; }
.delay-2 { animation-delay: 0.3s; }
.delay-3 { animation-delay: 0.45s; }
.delay-4 { animation-delay: 0.6s; }