/* ========== CSS Variables ========== */
:root {
  --color-primary: #0A2540;
  --color-secondary: #4A6FA5;
  --color-accent: #FF6B35;
  --color-accent-hover: #E55A2B;
  --color-bg: #FFFFFF;
  --color-bg-light: #F8F9FA;
  --color-text-dark: #2C3E50;
  --color-text-mid: #5A6C7D;
  --color-text-light: #FFFFFF;
  --color-text-light-dim: #E8E8E8;
  --color-border: #E0E4E8;
  --color-shadow: rgba(10, 37, 64, 0.08);

  --font-title: 'PingFang SC', 'Noto Sans SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
  --font-body: 'PingFang SC', 'Noto Sans SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;

  --h1-size: clamp(36px, 5vw, 64px);
  --h2-size: clamp(28px, 3.5vw, 48px);
  --h3-size: clamp(22px, 2.5vw, 32px);
  --body-size: 16px;
  --small-size: 14px;

  --section-gap: clamp(60px, 8vw, 120px);
  --card-padding: clamp(24px, 3vw, 32px);
  --container-max: 1200px;

  --ease-out: cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: 200ms;
  --transition-normal: 400ms;
}

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

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

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

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

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

ul, ol {
  list-style: none;
}

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 20px;
}

/* ========== Section Base ========== */
.section {
  padding: var(--section-gap) 0;
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-header h2 {
  font-family: var(--font-title);
  font-size: var(--h2-size);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 16px;
}

.section-header p {
  font-size: 18px;
  color: var(--color-text-mid);
  max-width: 600px;
  margin: 0 auto;
}

/* ========== Header / Navbar ========== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: all var(--transition-normal) var(--ease-out);
}

.header.scrolled {
  border-bottom-color: var(--color-border);
  box-shadow: 0 2px 20px var(--color-shadow);
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-title);
  font-size: 22px;
  font-weight: 700;
  color: var(--color-primary);
  white-space: nowrap;
}

.logo-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 18px;
  font-weight: 700;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-menu a {
  font-size: 15px;
  color: var(--color-text-dark);
  font-weight: 500;
  position: relative;
  padding: 4px 0;
}

.nav-menu a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  transition: width var(--transition-normal) var(--ease-out);
}

.nav-menu a:hover {
  color: var(--color-accent);
}

.nav-menu a:hover::after {
  width: 100%;
}

.nav-cta {
  display: inline-block;
  background: var(--color-accent);
  color: white !important;
  padding: 6px 36px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 14px;
  transition: all var(--transition-fast) var(--ease-out);
}

.nav-cta::after {
  display: none !important;
}

.nav-cta:hover {
  background: var(--color-accent-hover);
  transform: scale(1.02);
}

/* 产品软件导航入口 */
.nav-products-entry {
  display: inline-flex !important;
  align-items: center;
  gap: 6px;
  color: var(--color-accent) !important;
  font-weight: 600 !important;
}

.nav-badge {
  display: inline-block;
  background: var(--color-accent);
  color: white;
  font-size: 10px;
  padding: 2px 6px;
  border-radius: 4px;
  font-weight: 700;
  animation: badgePulse 2s ease-in-out infinite;
}

@keyframes badgePulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.1); }
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  z-index: 1001;
  background: none;
  border: none;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-primary);
  border-radius: 2px;
  transition: all var(--transition-fast) var(--ease-out);
}

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

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

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

/* Mobile Nav */
.mobile-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(20px);
  z-index: 999;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 32px;
  transform: translateY(-100%);
  transition: transform var(--transition-normal) var(--ease-out);
}

.mobile-nav.active {
  transform: translateY(0);
}

.mobile-nav a {
  font-size: 20px;
  font-weight: 600;
  color: var(--color-primary);
}

.mobile-nav .mobile-cta {
  background: var(--color-accent);
  color: white;
  padding: 14px 40px;
  border-radius: 8px;
  font-size: 16px;
}

/* ========== Hero Section ========== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: linear-gradient(135deg, #0A2540 0%, #0D3356 30%, #1A4A7A 70%, #4A6FA5 100%);
}

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

.hero-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(74, 111, 165, 0.4) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 20%, rgba(255, 107, 53, 0.15) 0%, transparent 40%),
    radial-gradient(ellipse at 50% 80%, rgba(10, 37, 64, 0.6) 0%, transparent 50%);
  z-index: 1;
}

.hero-bg::after {
  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: 60px 60px;
  z-index: 2;
}

.hero-particles {
  position: absolute;
  inset: 0;
  z-index: 3;
}

.particle {
  position: absolute;
  width: 4px;
  height: 4px;
  background: rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  animation: floatUp 6s infinite;
}

.particle:nth-child(1) { left: 10%; animation-delay: 0s; }
.particle:nth-child(2) { left: 25%; animation-delay: 1.5s; }
.particle:nth-child(3) { left: 40%; animation-delay: 3s; }
.particle:nth-child(4) { left: 55%; animation-delay: 0.8s; }
.particle:nth-child(5) { left: 70%; animation-delay: 2.2s; }
.particle:nth-child(6) { left: 85%; animation-delay: 4s; }
.particle:nth-child(7) { left: 15%; animation-delay: 5s; }
.particle:nth-child(8) { left: 60%; animation-delay: 3.5s; }

@keyframes floatUp {
  0% { transform: translateY(100vh) scale(0); opacity: 0; }
  10% { opacity: 1; }
  90% { opacity: 1; }
  100% { transform: translateY(-10vh) scale(1.5); opacity: 0; }
}

.hero .container {
  position: relative;
  z-index: 10;
  text-align: center;
}

.hero-badge {
  display: inline-block;
  padding: 8px 20px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 50px;
  color: var(--color-text-light-dim);
  font-size: 14px;
  margin-bottom: 32px;
  backdrop-filter: blur(10px);
}

.hero h1 {
  font-family: var(--font-title);
  font-size: var(--h1-size);
  font-weight: 700;
  color: var(--color-text-light);
  line-height: 1.2;
  margin-bottom: 24px;
  letter-spacing: -0.02em;
}

.hero h1 .highlight {
  background: linear-gradient(135deg, var(--color-accent), #FF8C5A);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: clamp(16px, 2vw, 20px);
  color: var(--color-text-light-dim);
  max-width: 700px;
  margin: 0 auto 40px;
  line-height: 1.8;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all var(--transition-fast) var(--ease-out);
  font-family: var(--font-body);
}

.btn-primary {
  background: var(--color-accent);
  color: white;
  box-shadow: 0 4px 16px rgba(255, 107, 53, 0.3);
}

.btn-primary:hover {
  background: var(--color-accent-hover);
  transform: scale(1.02);
  box-shadow: 0 6px 24px rgba(255, 107, 53, 0.4);
}

.btn-outline {
  background: transparent;
  color: white;
  border: 2px solid rgba(255, 255, 255, 0.4);
}

.btn-outline:hover {
  border-color: white;
  background: rgba(255, 255, 255, 0.1);
}

/* ========== Trust Badges ========== */
.trust-section {
  background: var(--color-bg);
  padding: 60px 0;
  margin-top: -2px;
}

.trust-stats {
  display: flex;
  justify-content: center;
  gap: 60px;
  flex-wrap: wrap;
  margin-bottom: 60px;
}

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

.trust-stat .stat-number {
  font-family: var(--font-title);
  font-size: 48px;
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1;
}

.trust-stat .stat-suffix {
  font-size: 28px;
  font-weight: 600;
  color: var(--color-accent);
}

.trust-stat .stat-label {
  font-size: var(--small-size);
  color: var(--color-text-mid);
  margin-top: 8px;
}

.trust-clients {
  text-align: center;
}

.trust-clients p {
  font-size: var(--small-size);
  color: var(--color-text-mid);
  margin-bottom: 24px;
}

.client-logos {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 40px;
  flex-wrap: wrap;
}

.client-logo-item {
  width: 120px;
  height: 50px;
  background: var(--color-bg-light);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  color: var(--color-text-mid);
  font-weight: 500;
  transition: all var(--transition-fast) var(--ease-out);
  border: 1px solid var(--color-border);
}

.client-logo-item:hover {
  box-shadow: 0 4px 12px var(--color-shadow);
  transform: translateY(-2px);
}

/* ========== Services Section ========== */
.services {
  background: var(--color-bg-light);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 24px;
}

.service-card {
  background: var(--color-bg);
  border-radius: 16px;
  padding: var(--card-padding);
  text-align: center;
  transition: all var(--transition-normal) var(--ease-out);
  border: 1px solid var(--color-border);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
  opacity: 0;
  transition: opacity var(--transition-normal) var(--ease-out);
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px var(--color-shadow);
}

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

.service-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  background: linear-gradient(135deg, rgba(74, 111, 165, 0.1), rgba(10, 37, 64, 0.05));
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  transition: all var(--transition-fast) var(--ease-out);
}

.service-card:hover .service-icon {
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  color: white;
}

.service-icon svg {
  width: 32px;
  height: 32px;
  stroke: var(--color-secondary);
  fill: none;
  stroke-width: 1.5;
  transition: stroke var(--transition-fast) var(--ease-out);
}

.service-card:hover .service-icon svg {
  stroke: white;
}

.service-card h3 {
  font-family: var(--font-title);
  font-size: 18px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 10px;
}

.service-card p {
  font-size: var(--small-size);
  color: var(--color-text-mid);
  margin-bottom: 16px;
  line-height: 1.6;
}

.service-link {
  font-size: var(--small-size);
  font-weight: 600;
  color: var(--color-accent);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: gap var(--transition-fast) var(--ease-out);
}

.service-link:hover {
  gap: 8px;
}

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

.case-card {
  background: var(--color-bg);
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--color-border);
  transition: all var(--transition-normal) var(--ease-out);
}

.case-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px var(--color-shadow);
}

.case-thumb {
  height: 200px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.case-thumb::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 0%, rgba(10, 37, 64, 0.3) 100%);
}

.case-thumb-placeholder {
  font-size: 48px;
  color: rgba(255, 255, 255, 0.6);
  font-weight: 700;
}

.case-info {
  padding: 24px;
}

.case-tag {
  display: inline-block;
  padding: 4px 12px;
  background: rgba(74, 111, 165, 0.1);
  color: var(--color-secondary);
  font-size: 12px;
  font-weight: 600;
  border-radius: 4px;
  margin-bottom: 12px;
}

.case-info h3 {
  font-family: var(--font-title);
  font-size: 18px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.case-info p {
  font-size: var(--small-size);
  color: var(--color-text-mid);
  line-height: 1.6;
}

.cases-more {
  text-align: center;
  margin-top: 48px;
}

.cases-more a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--color-accent);
  font-weight: 600;
  font-size: 16px;
  transition: gap var(--transition-fast) var(--ease-out);
}

.cases-more a:hover {
  gap: 12px;
}

/* ========== Why Us Section ========== */
.why-us {
  background: var(--color-bg-light);
}

.why-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.why-card {
  background: var(--color-bg);
  border-radius: 16px;
  padding: var(--card-padding);
  text-align: center;
  border: 1px solid var(--color-border);
  transition: all var(--transition-normal) var(--ease-out);
}

.why-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px var(--color-shadow);
}

.why-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 20px;
  background: linear-gradient(135deg, rgba(255, 107, 53, 0.1), rgba(74, 111, 165, 0.1));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
}

.why-icon svg {
  width: 28px;
  height: 28px;
  stroke: var(--color-accent);
  fill: none;
  stroke-width: 2;
}

.why-card h3 {
  font-family: var(--font-title);
  font-size: 18px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 10px;
}

.why-card p {
  font-size: var(--small-size);
  color: var(--color-text-mid);
  line-height: 1.6;
}

/* ========== Footer ========== */
.footer {
  background: var(--color-primary);
  color: var(--color-text-light-dim);
  padding: 60px 0 0;
}

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

.footer-company h3 {
  font-family: var(--font-title);
  font-size: 20px;
  font-weight: 700;
  color: white;
  margin-bottom: 16px;
}

.footer-company p {
  font-size: var(--small-size);
  line-height: 1.8;
  margin-bottom: 20px;
}

.footer-contact-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: var(--small-size);
  margin-bottom: 10px;
}

.footer-contact-item svg {
  width: 16px;
  height: 16px;
  stroke: var(--color-accent);
  fill: none;
  stroke-width: 2;
  flex-shrink: 0;
}

.footer-col h4 {
  font-family: var(--font-title);
  font-size: 16px;
  font-weight: 700;
  color: white;
  margin-bottom: 20px;
}

.footer-col a {
  display: block;
  font-size: var(--small-size);
  color: var(--color-text-light-dim);
  margin-bottom: 12px;
  transition: color var(--transition-fast) var(--ease-out);
}

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

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 0;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-bottom p {
  font-size: var(--small-size);
  color: rgba(255, 255, 255, 0.5);
}

.social-links {
  display: flex;
  gap: 16px;
}

.social-links a {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast) var(--ease-out);
}

.social-links a:hover {
  background: var(--color-accent);
  transform: translateY(-2px);
}

.social-links svg {
  width: 16px;
  height: 16px;
  fill: white;
}

/* ========== Inner Page: Service Detail ========== */
.page-banner {
  padding: 160px 0 80px;
  background: linear-gradient(135deg, var(--color-primary) 0%, #0D3356 50%, var(--color-secondary) 100%);
  text-align: center;
  color: white;
}

.page-banner h1 {
  font-family: var(--font-title);
  font-size: var(--h1-size);
  font-weight: 700;
  margin-bottom: 16px;
}

.page-banner p {
  font-size: 18px;
  color: var(--color-text-light-dim);
  max-width: 600px;
  margin: 0 auto;
}

.service-detail-content {
  padding: 80px 0;
}

.service-detail-content .container {
  max-width: 900px;
}

.service-features {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin: 40px 0;
}

.feature-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 24px;
  background: var(--color-bg-light);
  border-radius: 12px;
  transition: all var(--transition-fast) var(--ease-out);
}

.feature-item:hover {
  background: white;
  box-shadow: 0 4px 20px var(--color-shadow);
}

.feature-icon {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  flex-shrink: 0;
}

.feature-text h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 6px;
}

.feature-text p {
  font-size: var(--small-size);
  color: var(--color-text-mid);
}

.service-process {
  margin: 40px 0;
}

.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  position: relative;
}

.process-steps::before {
  content: '';
  position: absolute;
  top: 28px;
  left: 60px;
  right: 60px;
  height: 2px;
  background: var(--color-border);
  z-index: 0;
}

.process-step {
  text-align: center;
  position: relative;
  z-index: 1;
}

.step-number {
  width: 56px;
  height: 56px;
  background: white;
  border: 2px solid var(--color-secondary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 700;
  color: var(--color-secondary);
  margin: 0 auto 16px;
  transition: all var(--transition-fast) var(--ease-out);
}

.process-step:hover .step-number {
  background: var(--color-secondary);
  color: white;
}

.process-step h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 6px;
}

.process-step p {
  font-size: var(--small-size);
  color: var(--color-text-mid);
}

/* ========== Inner Page: Case Detail ========== */
.case-detail-content {
  padding: 80px 0;
}

.case-detail-content .container {
  max-width: 900px;
}

.case-meta {
  display: flex;
  gap: 40px;
  margin: 40px 0;
  padding: 32px;
  background: var(--color-bg-light);
  border-radius: 16px;
  flex-wrap: wrap;
}

.case-meta-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.case-meta-item .label {
  font-size: 12px;
  color: var(--color-text-mid);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.case-meta-item .value {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-primary);
}

.case-results {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin: 40px 0;
}

.result-card {
  text-align: center;
  padding: 32px 24px;
  background: var(--color-bg-light);
  border-radius: 12px;
}

.result-number {
  font-family: var(--font-title);
  font-size: 36px;
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1;
}

.result-label {
  font-size: var(--small-size);
  color: var(--color-text-mid);
  margin-top: 8px;
}

.case-testimonial {
  margin: 40px 0;
  padding: 40px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  border-radius: 16px;
  color: white;
  position: relative;
}

.case-testimonial::before {
  content: '"';
  position: absolute;
  top: 20px;
  left: 30px;
  font-size: 80px;
  color: rgba(255, 255, 255, 0.15);
  font-family: Georgia, serif;
  line-height: 1;
}

.case-testimonial blockquote {
  font-size: 18px;
  line-height: 1.8;
  font-style: italic;
  margin-bottom: 20px;
}

.case-testimonial cite {
  font-size: var(--small-size);
  color: var(--color-text-light-dim);
  font-style: normal;
}

/* ========== Contact Page ========== */
.contact-section {
  padding: 80px 0;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}

.contact-info h2 {
  font-family: var(--font-title);
  font-size: var(--h2-size);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 16px;
}

.contact-info > p {
  color: var(--color-text-mid);
  margin-bottom: 40px;
  line-height: 1.8;
}

.contact-detail-item {
  display: flex;
  gap: 16px;
  margin-bottom: 32px;
  align-items: flex-start;
}

.contact-detail-icon {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, rgba(74, 111, 165, 0.1), rgba(10, 37, 64, 0.05));
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-detail-icon svg {
  width: 22px;
  height: 22px;
  stroke: var(--color-secondary);
  fill: none;
  stroke-width: 2;
}

.contact-detail-text h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 4px;
}

.contact-detail-text p {
  font-size: var(--small-size);
  color: var(--color-text-mid);
}

/* ========== Contact Form ========== */
.contact-form-wrap {
  background: var(--color-bg);
  padding: 40px;
  border-radius: 16px;
  border: 1px solid var(--color-border);
  box-shadow: 0 4px 30px var(--color-shadow);
}

.contact-form-wrap h3 {
  font-family: var(--font-title);
  font-size: 22px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.contact-form-wrap > p {
  font-size: var(--small-size);
  color: var(--color-text-mid);
  margin-bottom: 32px;
}

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

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-dark);
  margin-bottom: 8px;
}

.form-group label .required {
  color: var(--color-accent);
  margin-left: 2px;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid var(--color-border);
  border-radius: 8px;
  font-size: 15px;
  font-family: var(--font-body);
  color: var(--color-text-dark);
  background: var(--color-bg-light);
  transition: all var(--transition-fast) var(--ease-out);
  outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--color-secondary);
  background: white;
  box-shadow: 0 0 0 4px rgba(74, 111, 165, 0.1);
}

.form-group input.error,
.form-group textarea.error {
  border-color: #E74C3C;
  background: #FFF5F5;
}

.form-group .error-msg {
  font-size: 12px;
  color: #E74C3C;
  margin-top: 6px;
  display: none;
}

.form-group .error-msg.show {
  display: block;
}

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

.form-submit {
  width: 100%;
  padding: 16px;
  background: var(--color-accent);
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast) var(--ease-out);
  position: relative;
  font-family: var(--font-body);
}

.form-submit:hover {
  background: var(--color-accent-hover);
  transform: scale(1.01);
}

.form-submit:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

.form-submit .spinner {
  display: none;
  width: 20px;
  height: 20px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  position: absolute;
}

.form-submit.loading .btn-text { visibility: hidden; }
.form-submit.loading .spinner { display: block; }

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ========== Toast / Modal ========== */
.toast {
  position: fixed;
  top: 24px;
  right: 24px;
  padding: 16px 24px;
  border-radius: 8px;
  color: white;
  font-weight: 500;
  z-index: 10000;
  transform: translateX(120%);
  transition: transform var(--transition-normal) var(--ease-out);
  max-width: 400px;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
}

.toast.show {
  transform: translateX(0);
}

.toast.success {
  background: #27AE60;
}

.toast.error {
  background: #E74C3C;
}

/* ========== Scroll Animation ========== */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 600ms var(--ease-out);
}

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

.reveal-delay-1 { transition-delay: 80ms; }
.reveal-delay-2 { transition-delay: 160ms; }
.reveal-delay-3 { transition-delay: 240ms; }
.reveal-delay-4 { transition-delay: 320ms; }
.reveal-delay-5 { transition-delay: 400ms; }

/* ========== Count Up Animation ========== */
.count-up {
  display: inline-block;
}

/* ========== Back to Top ========== */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 48px;
  height: 48px;
  background: var(--color-primary);
  color: white;
  border: none;
  border-radius: 12px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal) var(--ease-out);
  z-index: 999;
  box-shadow: 0 4px 16px rgba(10, 37, 64, 0.3);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  background: var(--color-accent);
  transform: translateY(-2px);
}

.back-to-top svg {
  width: 20px;
  height: 20px;
  stroke: white;
  fill: none;
  stroke-width: 2;
}

/* ========== Responsive Design ========== */

/* Tablet: 768px - 1023px */
@media (max-width: 1023px) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

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

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

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

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

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

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

  .nav-menu {
    display: none;
  }

  .hamburger {
    display: flex;
  }
}

/* Mobile: < 768px */
@media (max-width: 767px) {
  .services-grid {
    grid-template-columns: 1fr;
  }

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

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

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

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  .trust-stats {
    gap: 32px;
  }

  .trust-stat .stat-number {
    font-size: 36px;
  }

  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }

  .btn {
    width: 100%;
    max-width: 280px;
  }

  .case-results {
    grid-template-columns: 1fr;
  }

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

  .contact-form-wrap {
    padding: 24px;
  }

  .case-meta {
    gap: 20px;
  }

  .case-testimonial {
    padding: 24px;
  }

  .page-banner {
    padding: 120px 0 50px;
  }
}

/* Desktop: >= 1024px */
@media (min-width: 1024px) {
  .service-card:nth-child(5) {
    /* last item spans differently if needed */
  }
}