/* ============================================
   天洲数农 - 企业官网样式表
   ============================================ */

/* ===== CSS Variables ===== */
:root {
  /* Colors - Dark theme primary */
  --color-primary: #0A1929;
  --color-primary-light: #132F4C;
  --color-primary-lighter: #1A3A5C;
  --color-deep: #06101C;

  /* Accent colors */
  --color-accent: #00BFA5;
  --color-accent-light: #1DE9B6;
  --color-accent-glow: rgba(0, 191, 165, 0.4);
  --color-blue: #2196F3;
  --color-blue-light: #64B5F6;
  --color-gold: #FFD54F;

  /* Text */
  --color-text-light: #E8F0F8;
  --color-text-light-muted: #8FA8C0;
  --color-text-dark: #1A2B3C;
  --color-text-dark-muted: #5A6B7D;

  /* Backgrounds */
  --color-bg-dark: #0A1929;
  --color-bg-light: #F7FAFC;
  --color-bg-card: #FFFFFF;
  --color-bg-glass: rgba(255, 255, 255, 0.05);
  --color-bg-glass-border: rgba(255, 255, 255, 0.1);

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #0A1929 0%, #0D47A1 100%);
  --gradient-accent: linear-gradient(135deg, #00BFA5 0%, #00E676 100%);
  --gradient-blue: linear-gradient(135deg, #1565C0 0%, #42A5F5 100%);
  --gradient-hero: linear-gradient(135deg, rgba(10, 25, 41, 0.92) 0%, rgba(13, 71, 161, 0.75) 50%, rgba(0, 191, 165, 0.3) 100%);
  --gradient-section-dark: linear-gradient(180deg, #0A1929 0%, #0D1F35 100%);

  /* Typography */
  --font-sans: -apple-system, BlinkMacSystemFont, "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", "Segoe UI", sans-serif;

  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 4rem;
  --space-xl: 6rem;

  /* Transitions */
  --transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.12);
  --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.15);
  --shadow-glow: 0 0 40px rgba(0, 191, 165, 0.25);

  /* Layout */
  --container-max: 1280px;
  --nav-height: 72px;
  --radius: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
}

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

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

body {
  font-family: var(--font-sans);
  background: var(--color-bg-light);
  color: var(--color-text-dark);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

ul {
  list-style: none;
}

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

/* ===== Container ===== */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 2rem;
}

.container-narrow {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* ===== Navigation ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--nav-height);
  z-index: 1000;
  display: flex;
  align-items: center;
  transition: var(--transition);
  background: rgba(10, 25, 41, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.navbar.scrolled {
  background: rgba(10, 25, 41, 0.95);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

.nav-container {
  max-width: var(--container-max);
  width: 100%;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  cursor: pointer;
}

.nav-logo svg {
  width: 38px;
  height: 38px;
}

.nav-logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.nav-logo-text .main {
  font-size: 1.25rem;
  font-weight: 700;
  color: #FFFFFF;
  letter-spacing: 1px;
}

.nav-logo-text .sub {
  font-size: 0.65rem;
  color: var(--color-accent-light);
  letter-spacing: 2px;
  text-transform: uppercase;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

.nav-menu a {
  display: block;
  padding: 0.5rem 1.1rem;
  color: var(--color-text-light-muted);
  font-size: 0.95rem;
  font-weight: 500;
  border-radius: 8px;
  transition: var(--transition);
  position: relative;
}

.nav-menu a:hover {
  color: #FFFFFF;
  background: rgba(255, 255, 255, 0.06);
}

.nav-menu a.active {
  color: #FFFFFF;
  background: rgba(0, 191, 165, 0.15);
}

.nav-menu a.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 2px;
  background: var(--color-accent);
  border-radius: 2px;
}

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

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: #FFFFFF;
  border-radius: 2px;
  transition: var(--transition);
}

.nav-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ===== Page System ===== */
.page {
  display: none;
  min-height: 100vh;
  animation: pageFadeIn 0.5s ease-out;
}

.page.page-active {
  display: block;
}

@keyframes pageFadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ===== Hero Sections ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-hero);
  z-index: 1;
}

.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 191, 165, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 191, 165, 0.03) 1px, transparent 1px);
  background-size: 50px 50px;
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 6rem 2rem 4rem;
  max-width: 900px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1.2rem;
  background: rgba(0, 191, 165, 0.12);
  border: 1px solid rgba(0, 191, 165, 0.3);
  border-radius: 50px;
  color: var(--color-accent-light);
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 1.5rem;
  backdrop-filter: blur(10px);
}

.hero-badge::before {
  content: '';
  width: 8px;
  height: 8px;
  background: var(--color-accent);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--color-accent);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.3); }
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 800;
  color: #FFFFFF;
  line-height: 1.25;
  margin-bottom: 1.5rem;
  letter-spacing: 2px;
  text-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
}

.hero-title .highlight {
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: rgba(255, 255, 255, 0.8);
  line-height: 1.8;
  margin-bottom: 2.5rem;
  font-weight: 300;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.hero-scroll {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.8rem;
  letter-spacing: 1px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  animation: bounce 2s infinite;
}

.hero-scroll .arrow {
  width: 20px;
  height: 20px;
  border-right: 2px solid rgba(255, 255, 255, 0.4);
  border-bottom: 2px solid rgba(255, 255, 255, 0.4);
  transform: rotate(45deg);
}

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

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 2rem;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: 50px;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  font-family: var(--font-sans);
  letter-spacing: 0.5px;
}

.btn-primary {
  background: var(--gradient-accent);
  color: #FFFFFF;
  box-shadow: 0 4px 20px rgba(0, 191, 165, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0, 191, 165, 0.5);
}

.btn-outline {
  background: transparent;
  color: #FFFFFF;
  border: 1.5px solid rgba(255, 255, 255, 0.3);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.6);
  transform: translateY(-2px);
}

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

.btn-dark:hover {
  background: var(--color-primary-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-lg {
  padding: 1rem 2.5rem;
  font-size: 1.05rem;
}

/* ===== Section Styles ===== */
.section {
  padding: 5rem 0;
  position: relative;
}

.section-dark {
  background: var(--gradient-section-dark);
  color: var(--color-text-light);
}

.section-light {
  background: var(--color-bg-light);
  color: var(--color-text-dark);
}

.section-white {
  background: #FFFFFF;
  color: var(--color-text-dark);
}

.section-header {
  text-align: center;
  margin-bottom: 3.5rem;
}

.section-header.left {
  text-align: left;
}

.section-tag {
  display: inline-block;
  padding: 0.3rem 1rem;
  background: rgba(0, 191, 165, 0.1);
  border: 1px solid rgba(0, 191, 165, 0.2);
  border-radius: 50px;
  color: var(--color-accent);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 1px;
  margin-bottom: 1rem;
  text-transform: uppercase;
}

.section-dark .section-tag {
  background: rgba(0, 191, 165, 0.12);
  color: var(--color-accent-light);
}

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
  letter-spacing: 1px;
  line-height: 1.3;
}

.section-dark .section-title {
  color: #FFFFFF;
}

.section-title .accent {
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-desc {
  font-size: 1.1rem;
  color: var(--color-text-dark-muted);
  max-width: 700px;
  margin: 0 auto;
  line-height: 1.8;
}

.section-dark .section-desc {
  color: var(--color-text-light-muted);
}

/* ===== Grid Layouts ===== */
.grid {
  display: grid;
  gap: 1.5rem;
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-5 { grid-template-columns: repeat(5, 1fr); }

/* ===== Cards ===== */
.card {
  background: var(--color-bg-card);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: var(--transition);
  border: 1px solid rgba(0, 0, 0, 0.05);
  position: relative;
  overflow: hidden;
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(0, 191, 165, 0.2);
}

.card-glass {
  background: var(--color-bg-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--color-bg-glass-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: var(--transition);
}

.card-glass:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(0, 191, 165, 0.3);
  transform: translateY(-4px);
}

.card-icon {
  width: 60px;
  height: 60px;
  border-radius: var(--radius);
  background: linear-gradient(135deg, rgba(0, 191, 165, 0.12), rgba(33, 150, 243, 0.12));
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  transition: var(--transition);
}

.card:hover .card-icon {
  background: var(--gradient-accent);
  transform: scale(1.1);
}

.card-icon svg {
  width: 30px;
  height: 30px;
  stroke: var(--color-accent);
  transition: var(--transition);
}

.card:hover .card-icon svg {
  stroke: #FFFFFF;
}

.card-glass .card-icon {
  background: rgba(0, 191, 165, 0.15);
}

.card-glass .card-icon svg {
  stroke: var(--color-accent-light);
}

.card-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.section-dark .card-title,
.card-glass .card-title {
  color: #FFFFFF;
}

.card-text {
  font-size: 0.95rem;
  color: var(--color-text-dark-muted);
  line-height: 1.7;
}

.card-glass .card-text {
  color: var(--color-text-light-muted);
}

.card-number {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  font-size: 3rem;
  font-weight: 800;
  color: rgba(0, 191, 165, 0.08);
  line-height: 1;
}

/* ===== Stats Section ===== */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  padding: 3rem 2rem;
  background: var(--gradient-primary);
  border-radius: var(--radius-xl);
  position: relative;
  overflow: hidden;
}

.stats-bar::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 40px 40px;
}

.stat-item {
  text-align: center;
  position: relative;
  z-index: 1;
}

.stat-number {
  font-size: 3rem;
  font-weight: 800;
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: 0.5rem;
}

.stat-label {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.95rem;
  letter-spacing: 1px;
}

/* ===== Feature Card (Product) ===== */
.feature-card {
  background: #FFFFFF;
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
  border: 1px solid rgba(0, 0, 0, 0.05);
  position: relative;
}

.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(0, 191, 165, 0.3);
}

.feature-card .feature-header {
  padding: 1.5rem;
  background: linear-gradient(135deg, rgba(0, 191, 165, 0.06), rgba(33, 150, 243, 0.06));
  display: flex;
  align-items: center;
  gap: 1rem;
  border-bottom: 1px solid rgba(0, 0, 0, 0.04);
}

.feature-card .feature-header .icon-box {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--gradient-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.feature-card .feature-header .icon-box svg {
  width: 24px;
  height: 24px;
  stroke: #FFFFFF;
}

.feature-card .feature-header h4 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-text-dark);
}

.feature-card .feature-body {
  padding: 1.5rem;
}

.feature-card .feature-body p {
  font-size: 0.9rem;
  color: var(--color-text-dark-muted);
  line-height: 1.7;
}

/* ===== Timeline ===== */
.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
  padding: 2rem 0;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--color-accent), var(--color-blue));
  transform: translateX(-50%);
}

.timeline-item {
  position: relative;
  width: 50%;
  padding: 1rem 2.5rem;
  margin-bottom: 1rem;
}

.timeline-item:nth-child(odd) {
  left: 0;
  text-align: right;
}

.timeline-item:nth-child(even) {
  left: 50%;
}

.timeline-item::before {
  content: '';
  position: absolute;
  top: 1.5rem;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--color-accent);
  border: 3px solid var(--color-bg-dark);
  box-shadow: 0 0 15px var(--color-accent-glow);
  z-index: 1;
}

.timeline-item:nth-child(odd)::before {
  right: -8px;
}

.timeline-item:nth-child(even)::before {
  left: -8px;
}

.timeline-year {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-accent);
  margin-bottom: 0.3rem;
}

.timeline-content {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius);
  padding: 1.2rem;
  backdrop-filter: blur(10px);
}

.timeline-content h4 {
  color: #FFFFFF;
  font-size: 1.05rem;
  margin-bottom: 0.3rem;
}

.timeline-content p {
  color: var(--color-text-light-muted);
  font-size: 0.9rem;
}

/* ===== Value Cards ===== */
.value-card {
  text-align: center;
  padding: 2.5rem 2rem;
}

.value-card .value-icon {
  width: 72px;
  height: 72px;
  margin: 0 auto 1.5rem;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(0, 191, 165, 0.15), rgba(33, 150, 243, 0.15));
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.value-card .value-icon::before {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  border: 1px solid rgba(0, 191, 165, 0.2);
}

.value-card .value-icon svg {
  width: 32px;
  height: 32px;
  stroke: var(--color-accent-light);
}

.value-card h4 {
  font-size: 1.2rem;
  color: #FFFFFF;
  margin-bottom: 0.5rem;
  font-weight: 700;
}

.value-card p {
  color: var(--color-text-light-muted);
  font-size: 0.95rem;
}

/* ===== Tech Stack ===== */
.tech-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.tech-item {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius);
  padding: 1.5rem;
  text-align: center;
  transition: var(--transition);
}

.tech-item:hover {
  background: rgba(0, 191, 165, 0.08);
  border-color: rgba(0, 191, 165, 0.3);
  transform: translateY(-4px);
}

.tech-item .tech-icon {
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

.tech-item h4 {
  color: #FFFFFF;
  font-size: 1rem;
  margin-bottom: 0.3rem;
}

.tech-item p {
  color: var(--color-text-light-muted);
  font-size: 0.85rem;
}

/* ===== Business Board ===== */
.board-card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.board-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--gradient-accent);
  opacity: 0;
  transition: var(--transition);
}

.board-card:hover {
  background: rgba(255, 255, 255, 0.07);
  border-color: rgba(0, 191, 165, 0.3);
  transform: translateX(4px);
}

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

.board-card .board-number {
  font-size: 0.8rem;
  color: var(--color-accent);
  font-weight: 700;
  letter-spacing: 2px;
  margin-bottom: 0.5rem;
}

.board-card h4 {
  color: #FFFFFF;
  font-size: 1.15rem;
  margin-bottom: 0.5rem;
}

.board-card p {
  color: var(--color-text-light-muted);
  font-size: 0.9rem;
  line-height: 1.6;
}

/* ===== Contact Form ===== */
.contact-form {
  background: #FFFFFF;
  border-radius: var(--radius-xl);
  padding: 3rem;
  box-shadow: var(--shadow-lg);
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text-dark);
  margin-bottom: 0.5rem;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.85rem 1rem;
  font-size: 0.95rem;
  font-family: var(--font-sans);
  border: 1.5px solid #E0E6ED;
  border-radius: var(--radius);
  background: #F8FAFC;
  color: var(--color-text-dark);
  transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  background: #FFFFFF;
  box-shadow: 0 0 0 3px rgba(0, 191, 165, 0.1);
}

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

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

/* ===== Contact Info ===== */
.contact-info-card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  padding: 2rem;
  display: flex;
  align-items: flex-start;
  gap: 1.2rem;
  transition: var(--transition);
}

.contact-info-card:hover {
  background: rgba(255, 255, 255, 0.07);
  border-color: rgba(0, 191, 165, 0.2);
}

.contact-info-card .info-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: rgba(0, 191, 165, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-info-card .info-icon svg {
  width: 24px;
  height: 24px;
  stroke: var(--color-accent-light);
}

.contact-info-card h4 {
  color: #FFFFFF;
  font-size: 1rem;
  margin-bottom: 0.3rem;
}

.contact-info-card p {
  color: var(--color-text-light-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* ===== Footer ===== */
.footer {
  background: var(--color-deep);
  color: rgba(255, 255, 255, 0.6);
  padding: 3rem 0 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-content {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 2rem;
}

.footer-brand .nav-logo {
  margin-bottom: 1rem;
}

.footer-brand p {
  font-size: 0.9rem;
  line-height: 1.7;
  max-width: 320px;
}

.footer-col h5 {
  color: #FFFFFF;
  font-size: 1rem;
  margin-bottom: 1rem;
  font-weight: 600;
}

.footer-col ul li {
  margin-bottom: 0.6rem;
}

.footer-col ul li a {
  font-size: 0.9rem;
  transition: var(--transition);
  cursor: pointer;
}

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

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: 1.5rem;
  text-align: center;
  font-size: 0.85rem;
}

/* ===== Animation Utilities ===== */
.fade-up {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

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

.fade-left {
  opacity: 0;
  transform: translateX(-40px);
  transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.fade-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.fade-right {
  opacity: 0;
  transform: translateX(40px);
  transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.fade-right.visible {
  opacity: 1;
  transform: translateX(0);
}

.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }
.delay-4 { transition-delay: 0.4s; }
.delay-5 { transition-delay: 0.5s; }

/* ===== Split Layout ===== */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.split-content h3 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 1rem;
  line-height: 1.3;
}

.section-dark .split-content h3 {
  color: #FFFFFF;
}

.split-content p {
  font-size: 1.05rem;
  line-height: 1.8;
  margin-bottom: 1.5rem;
}

.split-list {
  list-style: none;
  margin-top: 1.5rem;
}

.split-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  margin-bottom: 1rem;
  font-size: 1rem;
}

.split-list li::before {
  content: '';
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--gradient-accent);
  flex-shrink: 0;
  margin-top: 2px;
  position: relative;
}

.split-list li::after {
  content: '';
  position: absolute;
  left: 7px;
  top: 7px;
  width: 6px;
  height: 3px;
  border-left: 2px solid #FFFFFF;
  border-bottom: 2px solid #FFFFFF;
  transform: rotate(-45deg);
}

.split-visual {
  position: relative;
  min-height: 400px;
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: var(--gradient-primary);
}

.split-visual::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 191, 165, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 191, 165, 0.05) 1px, transparent 1px);
  background-size: 30px 30px;
}

/* ===== Platform Card ===== */
.platform-card {
  background: var(--gradient-primary);
  border-radius: var(--radius-xl);
  padding: 3rem;
  position: relative;
  overflow: hidden;
  color: #FFFFFF;
}

.platform-card::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(0, 191, 165, 0.15), transparent 70%);
  border-radius: 50%;
}

.platform-card::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(33, 150, 243, 0.1), transparent 70%);
  border-radius: 50%;
}

.platform-card > * {
  position: relative;
  z-index: 1;
}

.platform-card .platform-tag {
  display: inline-block;
  padding: 0.3rem 1rem;
  background: rgba(0, 191, 165, 0.2);
  border-radius: 50px;
  color: var(--color-accent-light);
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.platform-card h3 {
  font-size: 1.8rem;
  margin-bottom: 1rem;
}

.platform-card p {
  color: rgba(255, 255, 255, 0.8);
  line-height: 1.8;
  margin-bottom: 1.5rem;
}

/* ===== Process Steps ===== */
.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  position: relative;
}

.process-step {
  text-align: center;
  position: relative;
}

.process-step .step-number {
  width: 56px;
  height: 56px;
  margin: 0 auto 1rem;
  border-radius: 50%;
  background: var(--gradient-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  font-weight: 800;
  color: #FFFFFF;
  box-shadow: 0 4px 20px rgba(0, 191, 165, 0.3);
  position: relative;
  z-index: 1;
}

.process-step h4 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.section-dark .process-step h4 {
  color: #FFFFFF;
}

.process-step p {
  font-size: 0.9rem;
  color: var(--color-text-dark-muted);
}

.section-dark .process-step p {
  color: var(--color-text-light-muted);
}

.process-step::after {
  content: '';
  position: absolute;
  top: 28px;
  left: 50%;
  width: 100%;
  height: 2px;
  background: linear-gradient(to right, rgba(0, 191, 165, 0.3), rgba(0, 191, 165, 0.1));
  z-index: 0;
}

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

/* ===== QR Code Section ===== */
.qr-section {
  display: flex;
  gap: 2rem;
  justify-content: center;
  flex-wrap: wrap;
}

.qr-card {
  text-align: center;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  padding: 2rem;
  min-width: 200px;
  transition: var(--transition);
}

.qr-card:hover {
  background: rgba(255, 255, 255, 0.07);
  border-color: rgba(0, 191, 165, 0.3);
  transform: translateY(-4px);
}

.qr-placeholder {
  width: 140px;
  height: 140px;
  margin: 0 auto 1rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
}

.qr-placeholder svg {
  width: 60px;
  height: 60px;
  stroke: rgba(255, 255, 255, 0.3);
}

.qr-card h4 {
  color: #FFFFFF;
  font-size: 1rem;
  margin-bottom: 0.3rem;
}

.qr-card p {
  color: var(--color-text-light-muted);
  font-size: 0.85rem;
}

/* ===== CTA Banner ===== */
.cta-banner {
  background: var(--gradient-primary);
  border-radius: var(--radius-xl);
  padding: 4rem 3rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 191, 165, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 191, 165, 0.04) 1px, transparent 1px);
  background-size: 40px 40px;
}

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

.cta-banner h2 {
  font-size: 2.5rem;
  font-weight: 700;
  color: #FFFFFF;
  margin-bottom: 1rem;
}

.cta-banner p {
  color: rgba(255, 255, 255, 0.8);
  font-size: 1.15rem;
  margin-bottom: 2rem;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(3, 1fr); }
  .grid-5 { grid-template-columns: repeat(3, 1fr); }
  .footer-content { grid-template-columns: 1fr 1fr; gap: 2rem; }
  .split { grid-template-columns: 1fr; gap: 2rem; }
  .tech-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .nav-menu {
    display: none;
    position: fixed;
    top: var(--nav-height);
    left: 0;
    width: 100%;
    background: rgba(10, 25, 41, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 1rem;
    gap: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  }

  .nav-menu.open {
    display: flex;
  }

  .nav-menu a {
    width: 100%;
    padding: 1rem;
    border-radius: 8px;
  }

  .nav-toggle {
    display: flex;
  }

  .hero-title {
    font-size: 2.2rem;
  }

  .hero-subtitle {
    font-size: 1rem;
  }

  .section-title {
    font-size: 1.8rem;
  }

  .section {
    padding: 3rem 0;
  }

  .grid-2, .grid-3, .grid-4, .grid-5 {
    grid-template-columns: 1fr;
  }

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

  .stats-bar {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    padding: 2rem 1rem;
  }

  .stat-number {
    font-size: 2rem;
  }

  .process-steps {
    grid-template-columns: 1fr 1fr;
  }

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

  .timeline::before {
    left: 20px;
  }

  .timeline-item {
    width: 100%;
    left: 0 !important;
    text-align: left !important;
    padding-left: 3rem;
    padding-right: 0;
  }

  .timeline-item::before {
    left: 12px !important;
    right: auto !important;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

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

  .contact-form {
    padding: 1.5rem;
  }

  .platform-card {
    padding: 2rem;
  }

  .cta-banner {
    padding: 2.5rem 1.5rem;
  }

  .cta-banner h2 {
    font-size: 1.8rem;
  }

  .hero {
    background-attachment: scroll;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 1.8rem;
  }

  .container {
    padding: 0 1rem;
  }

  .stats-bar {
    grid-template-columns: 1fr;
  }

  .process-steps {
    grid-template-columns: 1fr;
  }

  .hero-actions {
    flex-direction: column;
    width: 100%;
  }

  .hero-actions .btn {
    width: 100%;
    justify-content: center;
  }
}