/* ============================================
   成都世联广慧 - 企业官网设计系统
   ============================================ */

/* ===== CSS Variables ===== */
:root {
  /* Colors */
  --color-navy: #0f172a;
  --color-navy-light: #1e293b;
  --color-blue: #2563eb;
  --color-blue-light: #3b82f6;
  --color-blue-dark: #1d4ed8;
  --color-cyan: #06b6d4;
  --color-cyan-light: #22d3ee;
  --color-slate-50: #f8fafc;
  --color-slate-100: #f1f5f9;
  --color-slate-200: #e2e8f0;
  --color-slate-300: #cbd5e1;
  --color-slate-400: #94a3b8;
  --color-slate-500: #64748b;
  --color-slate-600: #475569;
  --color-slate-700: #334155;
  --color-slate-800: #1e293b;
  --color-slate-900: #0f172a;
  --color-white: #ffffff;
  --color-accent: #3b82f6;

  /* Gradients */
  --gradient-hero: linear-gradient(135deg, #0f172a 0%, #1e3a5f 50%, #1e293b 100%);
  --gradient-blue: linear-gradient(135deg, #2563eb 0%, #3b82f6 100%);
  --gradient-cyan: linear-gradient(135deg, #0891b2 0%, #06b6d4 100%);
  --gradient-dark: linear-gradient(180deg, #0f172a 0%, #1e293b 100%);
  --gradient-card: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);

  /* Typography */
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --font-mono: "SF Mono", "Fira Code", "Consolas", monospace;

  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 4rem;
  --space-3xl: 6rem;

  /* Layout */
  --container-max: 1200px;
  --header-height: 72px;

  /* Radius */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.05);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.15);
  --shadow-glow: 0 0 30px rgba(59, 130, 246, 0.15);

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  color: var(--color-slate-800);
  background: var(--color-white);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

ul, ol {
  list-style: none;
}

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

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

/* ===== Container ===== */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== Header / Navigation ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(226, 232, 240, 0.6);
  z-index: 1000;
  transition: all var(--transition-base);
}

.header.scrolled {
  box-shadow: var(--shadow-md);
  background: rgba(255, 255, 255, 0.95);
}

.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-navy);
  letter-spacing: 0.02em;
}

.logo-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: var(--gradient-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.1rem;
  font-weight: 800;
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
  flex-shrink: 0;
}

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

.logo-text .name {
  font-size: 1.05rem;
  font-weight: 700;
}

.logo-text .sub {
  font-size: 0.65rem;
  color: var(--color-slate-500);
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-link {
  position: relative;
  padding: 8px 18px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-slate-600);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.nav-link:hover {
  color: var(--color-blue);
  background: var(--color-slate-50);
}

.nav-link.active {
  color: var(--color-blue);
}

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

.nav-cta {
  margin-left: 12px;
  padding: 9px 22px;
  background: var(--gradient-blue);
  color: white;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 600;
  transition: all var(--transition-fast);
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.25);
}

.nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(59, 130, 246, 0.35);
}

/* Mobile menu toggle */
.menu-toggle {
  display: none;
  width: 40px;
  height: 40px;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  cursor: pointer;
}

.menu-toggle span {
  width: 22px;
  height: 2px;
  background: var(--color-slate-800);
  border-radius: 2px;
  transition: all var(--transition-base);
}

.menu-toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

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

.menu-toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 30px;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
  cursor: pointer;
  white-space: nowrap;
}

.btn-primary {
  background: var(--gradient-blue);
  color: white;
  box-shadow: 0 4px 14px rgba(59, 130, 246, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(59, 130, 246, 0.4);
}

.btn-outline {
  border: 1.5px solid var(--color-slate-300);
  color: var(--color-slate-700);
  background: transparent;
}

.btn-outline:hover {
  border-color: var(--color-blue);
  color: var(--color-blue);
  background: var(--color-slate-50);
}

.btn-light {
  background: rgba(255, 255, 255, 0.12);
  color: white;
  border: 1px solid rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(10px);
}

.btn-light:hover {
  background: rgba(255, 255, 255, 0.2);
  border-color: rgba(255, 255, 255, 0.4);
}

.btn-lg {
  padding: 16px 38px;
  font-size: 1rem;
}

/* ===== Section ===== */
.section {
  padding: var(--space-3xl) 0;
}

.section-sm {
  padding: var(--space-2xl) 0;
}

.section-dark {
  background: var(--color-navy);
  color: var(--color-slate-300);
}

.section-tinted {
  background: var(--color-slate-50);
}

/* ===== Section Header ===== */
.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto var(--space-2xl);
}

.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-blue);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 16px;
}

.section-eyebrow::before {
  content: '';
  width: 24px;
  height: 2px;
  background: var(--color-blue);
  border-radius: 2px;
}

.section-title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  color: var(--color-navy);
  line-height: 1.3;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.section-dark .section-title {
  color: white;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--color-slate-500);
  line-height: 1.7;
}

.section-dark .section-desc {
  color: var(--color-slate-400);
}

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: var(--gradient-hero);
  overflow: hidden;
  padding-top: var(--header-height);
}

.hero-bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
}

.hero-bg::before {
  content: '';
  position: absolute;
  top: -20%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.15) 0%, transparent 70%);
  border-radius: 50%;
}

.hero-bg::after {
  content: '';
  position: absolute;
  bottom: -10%;
  left: -5%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(6, 182, 212, 0.12) 0%, transparent 70%);
  border-radius: 50%;
}

.hero-grid {
  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: 60px 60px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 760px;
  padding: 60px 0;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 18px;
  background: rgba(59, 130, 246, 0.12);
  border: 1px solid rgba(59, 130, 246, 0.25);
  border-radius: var(--radius-full);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--color-blue-light);
  margin-bottom: 28px;
  backdrop-filter: blur(10px);
}

.hero-badge .dot {
  width: 8px;
  height: 8px;
  background: var(--color-cyan-light);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

.hero-title {
  font-size: clamp(2.2rem, 5.5vw, 3.8rem);
  font-weight: 800;
  color: white;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 24px;
}

.hero-title .highlight {
  background: linear-gradient(135deg, #60a5fa 0%, #22d3ee 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-desc {
  font-size: 1.15rem;
  color: var(--color-slate-400);
  line-height: 1.8;
  margin-bottom: 36px;
  max-width: 600px;
}

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

.hero-stats {
  position: relative;
  z-index: 2;
  display: flex;
  gap: 48px;
  margin-top: 64px;
  flex-wrap: wrap;
}

.hero-stat .num {
  font-size: 2.2rem;
  font-weight: 800;
  color: white;
  line-height: 1;
  margin-bottom: 6px;
}

.hero-stat .num .suffix {
  font-size: 1.2rem;
  color: var(--color-blue-light);
}

.hero-stat .label {
  font-size: 0.85rem;
  color: var(--color-slate-500);
  letter-spacing: 0.03em;
}

/* ===== Card Grid ===== */
.grid {
  display: grid;
  gap: 28px;
}

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

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

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

/* ===== Feature Card ===== */
.feature-card {
  background: white;
  border: 1px solid var(--color-slate-200);
  border-radius: var(--radius-lg);
  padding: 36px 30px;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--gradient-blue);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
}

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

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

.feature-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 22px;
  font-size: 1.5rem;
}

.feature-icon.blue { background: rgba(59, 130, 246, 0.1); color: var(--color-blue); }
.feature-icon.cyan { background: rgba(6, 182, 212, 0.1); color: var(--color-cyan); }
.feature-icon.indigo { background: rgba(99, 102, 241, 0.1); color: #6366f1; }
.feature-icon.emerald { background: rgba(16, 185, 129, 0.1); color: #10b981; }
.feature-icon.amber { background: rgba(245, 158, 11, 0.1); color: #f59e0b; }
.feature-icon.rose { background: rgba(244, 63, 94, 0.1); color: #f43f5e; }

.feature-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-navy);
  margin-bottom: 12px;
}

.feature-card p {
  font-size: 0.92rem;
  color: var(--color-slate-500);
  line-height: 1.7;
}

/* ===== Stats Section ===== */
.stats-section {
  background: var(--gradient-dark);
  padding: var(--space-2xl) 0;
}

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

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

.stat-item:not(:last-child)::after {
  content: '';
  position: absolute;
  right: -16px;
  top: 50%;
  transform: translateY(-50%);
  width: 1px;
  height: 60px;
  background: rgba(255, 255, 255, 0.1);
}

.stat-num {
  font-size: 3rem;
  font-weight: 800;
  color: white;
  line-height: 1;
  margin-bottom: 10px;
}

.stat-num .suffix {
  font-size: 1.3rem;
  color: var(--color-blue-light);
}

.stat-label {
  font-size: 0.9rem;
  color: var(--color-slate-400);
}

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

.split-content h2 {
  font-size: clamp(1.6rem, 3.5vw, 2.2rem);
  font-weight: 800;
  color: var(--color-navy);
  margin-bottom: 20px;
  line-height: 1.3;
}

.split-content p {
  font-size: 1rem;
  color: var(--color-slate-500);
  line-height: 1.8;
  margin-bottom: 16px;
}

.check-list {
  margin-top: 24px;
}

.check-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 16px;
  font-size: 0.95rem;
  color: var(--color-slate-700);
}

.check-list .check-icon {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: rgba(59, 130, 246, 0.1);
  color: var(--color-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  flex-shrink: 0;
  margin-top: 2px;
}

.split-visual {
  position: relative;
}

/* ===== Code/Visual Block ===== */
.visual-block {
  background: var(--color-navy);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-2xl);
  position: relative;
  overflow: hidden;
}

.visual-block::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -30%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.1) 0%, transparent 70%);
  border-radius: 50%;
}

.visual-dots {
  display: flex;
  gap: 8px;
  margin-bottom: 24px;
}

.visual-dots span {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.15);
}

.visual-dots span:nth-child(1) { background: #ef4444; opacity: 0.6; }
.visual-dots span:nth-child(2) { background: #f59e0b; opacity: 0.6; }
.visual-dots span:nth-child(3) { background: #10b981; opacity: 0.6; }

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

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

.process-steps::before {
  content: '';
  position: absolute;
  top: 36px;
  left: 12%;
  right: 12%;
  height: 2px;
  background: repeating-linear-gradient(
    90deg,
    var(--color-slate-200) 0,
    var(--color-slate-200) 8px,
    transparent 8px,
    transparent 16px
  );
}

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

.step-num {
  width: 72px;
  height: 72px;
  margin: 0 auto 20px;
  border-radius: 50%;
  background: white;
  border: 2px solid var(--color-slate-200);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--color-slate-400);
  position: relative;
  z-index: 1;
  transition: all var(--transition-base);
}

.step:hover .step-num {
  border-color: var(--color-blue);
  color: var(--color-blue);
  box-shadow: var(--shadow-glow);
  transform: scale(1.05);
}

.step h4 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-navy);
  margin-bottom: 8px;
}

.step p {
  font-size: 0.85rem;
  color: var(--color-slate-500);
  line-height: 1.6;
}

/* ===== Values ===== */
.values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.value-card {
  background: var(--color-slate-50);
  border: 1px solid var(--color-slate-200);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: all var(--transition-base);
}

.value-card:hover {
  background: white;
  box-shadow: var(--shadow-lg);
}

.value-card .icon {
  font-size: 2rem;
  margin-bottom: 16px;
}

.value-card h4 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-navy);
  margin-bottom: 10px;
}

.value-card p {
  font-size: 0.9rem;
  color: var(--color-slate-500);
  line-height: 1.7;
}

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

.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--color-slate-200);
  transform: translateX(-50%);
}

.timeline-item {
  position: relative;
  width: 50%;
  padding: 0 40px 40px 0;
}

.timeline-item:nth-child(even) {
  margin-left: 50%;
  padding: 0 0 40px 40px;
}

.timeline-dot {
  position: absolute;
  right: -7px;
  top: 4px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--color-blue);
  border: 3px solid white;
  box-shadow: 0 0 0 2px var(--color-blue);
}

.timeline-item:nth-child(even) .timeline-dot {
  right: auto;
  left: -7px;
}

.timeline-card {
  background: white;
  border: 1px solid var(--color-slate-200);
  border-radius: var(--radius-md);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
}

.timeline-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.timeline-year {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--color-blue);
  margin-bottom: 6px;
}

.timeline-card h4 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-navy);
  margin-bottom: 8px;
}

.timeline-card p {
  font-size: 0.85rem;
  color: var(--color-slate-500);
  line-height: 1.6;
}

/* ===== Service Detail Card ===== */
.service-detail {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  margin-bottom: var(--space-3xl);
}

.service-detail:last-child {
  margin-bottom: 0;
}

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

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

.service-detail-content h3 {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--color-navy);
  margin-bottom: 16px;
}

.service-detail-content p {
  font-size: 1rem;
  color: var(--color-slate-500);
  line-height: 1.8;
  margin-bottom: 20px;
}

.service-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-top: 24px;
}

.service-feature {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.88rem;
  color: var(--color-slate-700);
  font-weight: 500;
}

.service-feature .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-blue);
  flex-shrink: 0;
}

.service-visual {
  background: var(--gradient-card);
  border: 1px solid var(--color-slate-200);
  border-radius: var(--radius-xl);
  padding: 40px;
  min-height: 340px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

/* Tech Stack */
.tech-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.tech-item {
  background: white;
  border: 1px solid var(--color-slate-200);
  border-radius: var(--radius-md);
  padding: 24px 16px;
  text-align: center;
  transition: all var(--transition-base);
}

.tech-item:hover {
  border-color: var(--color-blue);
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.tech-item .icon {
  width: 48px;
  height: 48px;
  margin: 0 auto 12px;
  border-radius: var(--radius-sm);
  background: var(--color-slate-100);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
}

.tech-item h5 {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-slate-700);
}

/* ===== CTA Section ===== */
.cta-section {
  position: relative;
  background: var(--gradient-hero);
  padding: var(--space-3xl) 0;
  text-align: center;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: 30%;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.12) 0%, transparent 60%);
  border-radius: 50%;
}

.cta-section .container {
  position: relative;
  z-index: 1;
}

.cta-section h2 {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 800;
  color: white;
  margin-bottom: 16px;
}

.cta-section p {
  font-size: 1.1rem;
  color: var(--color-slate-400);
  margin-bottom: 32px;
}

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

.contact-info-card {
  background: var(--color-navy);
  border-radius: var(--radius-lg);
  padding: 40px;
  color: var(--color-slate-300);
  position: relative;
  overflow: hidden;
}

.contact-info-card::before {
  content: '';
  position: absolute;
  top: -30%;
  right: -20%;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.15) 0%, transparent 70%);
  border-radius: 50%;
}

.contact-info-card h3 {
  font-size: 1.3rem;
  font-weight: 700;
  color: white;
  margin-bottom: 28px;
  position: relative;
}

.contact-info-item {
  display: flex;
  gap: 16px;
  margin-bottom: 24px;
  position: relative;
}

.contact-info-item .icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: rgba(59, 130, 246, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
}

.contact-info-item .label {
  font-size: 0.8rem;
  color: var(--color-slate-500);
  margin-bottom: 4px;
}

.contact-info-item .value {
  font-size: 0.95rem;
  color: white;
  font-weight: 500;
}

/* Contact Form */
.contact-form {
  background: white;
  border: 1px solid var(--color-slate-200);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-lg);
}

.contact-form h3 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-navy);
  margin-bottom: 28px;
}

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

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-slate-700);
  margin-bottom: 8px;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 12px 16px;
  font-size: 0.92rem;
  font-family: inherit;
  color: var(--color-slate-800);
  background: var(--color-slate-50);
  border: 1.5px solid var(--color-slate-200);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  outline: none;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--color-blue);
  background: white;
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

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

.form-submit {
  width: 100%;
  padding: 14px;
  font-size: 1rem;
  font-weight: 600;
  color: white;
  background: var(--gradient-blue);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  margin-top: 8px;
}

.form-submit:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(59, 130, 246, 0.35);
}

/* ===== Page Hero (sub pages) ===== */
.page-hero {
  background: var(--gradient-hero);
  padding: calc(var(--header-height) + 80px) 0 80px;
  position: relative;
  overflow: hidden;
  text-align: center;
}

.page-hero::before {
  content: '';
  position: absolute;
  top: 10%;
  right: -5%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.12) 0%, transparent 70%);
  border-radius: 50%;
}

.page-hero::after {
  content: '';
  position: absolute;
  bottom: -10%;
  left: -5%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(6, 182, 212, 0.1) 0%, transparent 70%);
  border-radius: 50%;
}

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

.page-hero .section-eyebrow {
  color: var(--color-blue-light);
}

.page-hero .section-eyebrow::before {
  background: var(--color-blue-light);
}

.page-hero h1 {
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 800;
  color: white;
  line-height: 1.2;
  margin-bottom: 18px;
  letter-spacing: -0.02em;
}

.page-hero p {
  font-size: 1.1rem;
  color: var(--color-slate-400);
  max-width: 640px;
  margin: 0 auto;
  line-height: 1.7;
}

/* Breadcrumb */
.breadcrumb {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: 28px;
  font-size: 0.85rem;
}

.breadcrumb a {
  color: var(--color-slate-500);
  transition: color var(--transition-fast);
}

.breadcrumb a:hover {
  color: white;
}

.breadcrumb .sep {
  color: var(--color-slate-600);
}

.breadcrumb .current {
  color: var(--color-blue-light);
}

/* ===== Footer ===== */
.footer {
  background: var(--color-navy);
  color: var(--color-slate-400);
  padding: 64px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.footer-brand .logo {
  color: white;
  margin-bottom: 16px;
}

.footer-brand p {
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--color-slate-500);
  max-width: 300px;
}

.footer-col h5 {
  font-size: 0.95rem;
  font-weight: 700;
  color: white;
  margin-bottom: 18px;
}

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

.footer-col ul li a {
  font-size: 0.88rem;
  color: var(--color-slate-500);
  transition: color var(--transition-fast);
}

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

.footer-social {
  display: flex;
  gap: 12px;
  margin-top: 20px;
}

.footer-social a {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.06);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  transition: all var(--transition-fast);
}

.footer-social a:hover {
  background: var(--color-blue);
  color: white;
}

.footer-bottom {
  padding: 24px 0;
  text-align: center;
  font-size: 0.82rem;
  color: var(--color-slate-600);
}

.footer-bottom a {
  color: var(--color-slate-500);
}

.footer-bottom a:hover {
  color: var(--color-blue-light);
}

/* ===== Animations ===== */
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(1.3); }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity:  1; }
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

/* Scroll animations */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

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

/* ===== Responsive ===== */
@media (max-width: 968px) {
  .split {
    grid-template-columns: 1fr;
    gap: 40px;
  }

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

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

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

  .process-steps::before {
    display: none;
  }

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

  .service-detail {
    grid-template-columns: 1fr;
  }

  .service-detail.reverse {
    direction: ltr;
  }

  .contact-layout {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    width: 100%;
    background: white;
    flex-direction: column;
    align-items: stretch;
    padding: 16px;
    gap: 4px;
    box-shadow: var(--shadow-lg);
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: all var(--transition-base);
  }

  .nav.active {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav-link {
    padding: 12px 18px;
    border-radius: var(--radius-md);
  }

  .nav-link.active::after {
    display: none;
  }

  .nav-link.active {
    background: var(--color-slate-50);
  }

  .nav-cta {
    margin-left: 0;
    margin-top: 8px;
    text-align: center;
    justify-content: center;
  }

  .menu-toggle {
    display: flex;
  }

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

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
  }

  .stat-item:nth-child(2)::after {
    display: none;
  }

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

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

  .hero-stats {
    gap: 28px;
  }

  .hero-stat .num {
    font-size: 1.8rem;
  }

  .section {
    padding: 48px 0;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

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

  .timeline-item,
  .timeline-item:nth-child(even) {
    width: 100%;
    margin-left: 0;
    padding: 0 0 32px 48px;
  }

  .timeline-item .timeline-dot,
  .timeline-item:nth-child(even) .timeline-dot {
    left: 13px;
    right: auto;
  }

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

@media (max-width: 480px) {
  .grid-4,
  .tech-grid,
  .stats-grid {
    grid-template-columns: 1fr;
  }

  .stat-item::after {
    display: none;
  }

  .hero-actions {
    flex-direction: column;
  }

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