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

:root {
  --primary: #ff6a00;
  --primary-dark: #e55a00;
  --secondary: #1a1a2e;
  --accent: #00d4ff;
  --bg-dark: #0f0f1a;
  --bg-light: #f7f8fc;
  --text-dark: #1a1a2e;
  --text-gray: #6b7280;
  --white: #ffffff;
  --gradient: linear-gradient(135deg, #ff6a00 0%, #ee0979 100%);
  --gradient-blue: linear-gradient(135deg, #00d4ff 0%, #0066ff 100%);
  --shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.15);
  --radius: 16px;
  --transition: all 0.3s ease;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  line-height: 1.6;
  color: var(--text-dark);
  background: var(--white);
  overflow-x: hidden;
}

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

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

ul {
  list-style: none;
}

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

.btn {
  display: inline-block;
  padding: 14px 36px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 16px;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  text-align: center;
}

.btn-primary {
  background: var(--gradient);
  color: var(--white);
  box-shadow: 0 4px 20px rgba(255, 106, 0, 0.4);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 30px rgba(255, 106, 0, 0.5);
}

.btn-outline {
  background: transparent;
  color: var(--white);
  border: 2px solid rgba(255, 255, 255, 0.6);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: var(--white);
}

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

.btn-dark:hover {
  background: #2d2d44;
  transform: translateY(-3px);
}

.section {
  padding: 100px 0;
}

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

.section-tag {
  display: inline-block;
  padding: 6px 18px;
  background: rgba(255, 106, 0, 0.1);
  color: var(--primary);
  border-radius: 50px;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 16px;
}

.section-title {
  font-size: 40px;
  font-weight: 800;
  color: var(--text-dark);
  margin-bottom: 16px;
  line-height: 1.3;
}

.section-subtitle {
  font-size: 17px;
  color: var(--text-gray);
  max-width: 640px;
  margin: 0 auto;
}

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.06);
  transition: var(--transition);
}

.navbar.scrolled {
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 72px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 22px;
  font-weight: 800;
  color: var(--text-dark);
}

.nav-logo-icon {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  object-fit: cover;
  flex-shrink: 0;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

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

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

.nav-links a::after {
  content: "";
  position: absolute;
  bottom: -6px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient);
  transition: var(--transition);
}

.nav-links a:hover {
  color: var(--primary);
}

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

.nav-cta {
  padding: 10px 24px;
  background: var(--gradient);
  color: var(--white) !important;
  border-radius: 50px;
}

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

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(255, 106, 0, 0.4);
}

.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
}

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

.hero {
  min-height: 100vh;
  background: linear-gradient(160deg, #0f0f1a 0%, #1a1a2e 50%, #2d1b4e 100%);
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  padding-top: 100px;
}

.hero::before {
  content: "";
  position: absolute;
  top: -50%;
  right: -20%;
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(255, 106, 0, 0.3) 0%, transparent 70%);
  border-radius: 50%;
  animation: float 8s ease-in-out infinite;
}

.hero::after {
  content: "";
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.2) 0%, transparent 70%);
  border-radius: 50%;
  animation: float 10s ease-in-out infinite reverse;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(-30px, 30px); }
}

.hero-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 2;
}

.hero-content {
  color: var(--white);
}

.hero-badge {
  display: inline-block;
  padding: 8px 20px;
  background: rgba(255, 106, 0, 0.2);
  border: 1px solid rgba(255, 106, 0, 0.4);
  border-radius: 50px;
  font-size: 14px;
  color: var(--primary);
  margin-bottom: 28px;
  font-weight: 500;
}

.hero-title {
  font-size: 56px;
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 24px;
}

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

.hero-desc {
  font-size: 18px;
  color: rgba(255, 255, 255, 0.75);
  margin-bottom: 40px;
  max-width: 520px;
  line-height: 1.8;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 50px;
}

.hero-stats {
  display: flex;
  gap: 48px;
}

.hero-stat {
  color: var(--white);
}

.hero-stat-num {
  font-size: 36px;
  font-weight: 800;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-stat-label {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
}

.hero-visual {
  position: relative;
}

.hero-card {
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 24px;
  padding: 36px;
  position: relative;
}

.hero-card-main {
  background: rgba(255, 255, 255, 0.08);
  border-radius: 20px;
  padding: 28px;
  text-align: center;
}

.hero-card-main-icon {
  width: 80px;
  height: 80px;
  background: var(--gradient);
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  font-size: 36px;
}

.hero-card-main h3 {
  color: var(--white);
  font-size: 22px;
  margin-bottom: 8px;
}

.hero-card-main p {
  color: rgba(255, 255, 255, 0.6);
  font-size: 14px;
}

.hero-float-card {
  position: absolute;
  background: rgba(255, 255, 255, 0.98);
  border-radius: 16px;
  padding: 16px 20px;
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 12px;
  animation: floatY 4s ease-in-out infinite;
}

.hero-float-card.card-1 {
  top: -30px;
  left: -40px;
  animation-delay: 0s;
}

.hero-float-card.card-2 {
  bottom: -30px;
  right: -20px;
  animation-delay: 2s;
}

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

.hero-float-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
}

.hero-float-card.card-1 .hero-float-icon {
  background: linear-gradient(135deg, #667eea, #764ba2);
}

.hero-float-card.card-2 .hero-float-icon {
  background: linear-gradient(135deg, #f093fb, #f5576c);
}

.hero-float-text h4 {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-dark);
}

.hero-float-text p {
  font-size: 12px;
  color: var(--text-gray);
}

.services {
  background: var(--bg-light);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
}

.service-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 40px 28px;
  text-align: center;
  transition: var(--transition);
  border: 1px solid rgba(0, 0, 0, 0.04);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient);
  transform: scaleX(0);
  transition: var(--transition);
}

.service-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-lg);
}

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

.service-icon {
  width: 72px;
  height: 72px;
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 24px;
  font-size: 32px;
}

.service-icon.billiard {
  background: linear-gradient(135deg, #f093fb, #f5576c);
}
.service-icon.ktv {
  background: linear-gradient(135deg, #4facfe, #00f2fe);
}
.service-icon.chess {
  background: linear-gradient(135deg, #43e97b, #38f9d7);
}
.service-icon.gym {
  background: linear-gradient(135deg, #fa709a, #fee140);
}

.service-card h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-dark);
}

.service-card p {
  font-size: 14px;
  color: var(--text-gray);
  line-height: 1.7;
}

.solutions {
  background: var(--white);
}

.solutions-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
  margin-bottom: 100px;
}

.solutions-row:last-child {
  margin-bottom: 0;
}

.solutions-row.reverse {
  direction: rtl;
}

.solutions-row.reverse > * {
  direction: ltr;
}

.solutions-image {
  border-radius: 24px;
  overflow: hidden;
  position: relative;
  box-shadow: var(--shadow-lg);
}

.solutions-image-placeholder {
  aspect-ratio: 4/3;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 80px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: rgba(255, 255, 255, 0.9);
}

.solutions-image-placeholder.blue {
  background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

.solutions-content h3 {
  font-size: 32px;
  font-weight: 800;
  margin-bottom: 20px;
  line-height: 1.3;
}

.solutions-content p {
  font-size: 16px;
  color: var(--text-gray);
  margin-bottom: 28px;
  line-height: 1.8;
}

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

.feature-item {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-dark);
}

.feature-check {
  width: 24px;
  height: 24px;
  background: linear-gradient(135deg, #43e97b, #38f9d7);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 14px;
  flex-shrink: 0;
}

.hardware {
  background: var(--bg-dark);
  color: var(--white);
  position: relative;
  overflow: hidden;
}

.hardware::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(255, 106, 0, 0.15) 0%, transparent 70%);
}

.hardware .section-title {
  color: var(--white);
}

.hardware .section-subtitle {
  color: rgba(255, 255, 255, 0.6);
}

.hardware-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  position: relative;
  z-index: 2;
}

.hardware-card {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius);
  padding: 40px 28px;
  text-align: center;
  transition: var(--transition);
}

.hardware-card:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--primary);
  transform: translateY(-8px);
}

.hardware-icon {
  width: 80px;
  height: 80px;
  background: var(--gradient);
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 24px;
  font-size: 36px;
}

.hardware-card h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--white);
}

.hardware-card p {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  line-height: 1.7;
}

.mini-program {
  background: linear-gradient(135deg, #f7f8fc 0%, #eef0f7 100%);
}

.mini-program-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.mini-preview {
  display: flex;
  justify-content: center;
  gap: 20px;
}

.phone {
  width: 200px;
  height: 400px;
  background: var(--white);
  border-radius: 30px;
  box-shadow: var(--shadow-lg);
  padding: 16px;
  display: flex;
  flex-direction: column;
}

.phone-screen {
  flex: 1;
  border-radius: 18px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.phone-screen-header {
  background: var(--gradient);
  padding: 16px;
  color: var(--white);
}

.phone-screen-header h4 {
  font-size: 14px;
  font-weight: 600;
}

.phone-screen-body {
  flex: 1;
  padding: 16px;
  background: #f7f8fc;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.phone-item {
  background: var(--white);
  border-radius: 10px;
  padding: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.phone-item-icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: var(--gradient);
  flex-shrink: 0;
}

.phone-item-text h5 {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-dark);
}

.phone-item-text p {
  font-size: 10px;
  color: var(--text-gray);
}

.phone-2 .phone-screen-header {
  background: var(--gradient-blue);
}

.mini-program-content h3 {
  font-size: 36px;
  font-weight: 800;
  margin-bottom: 20px;
  line-height: 1.3;
}

.mini-program-content p {
  font-size: 16px;
  color: var(--text-gray);
  margin-bottom: 28px;
  line-height: 1.8;
}

.mini-features {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.mini-feature {
  display: flex;
  gap: 16px;
}

.mini-feature-num {
  width: 40px;
  height: 40px;
  background: var(--gradient);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-weight: 800;
  font-size: 18px;
  flex-shrink: 0;
}

.mini-feature-text h4 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 4px;
}

.mini-feature-text p {
  font-size: 14px;
  color: var(--text-gray);
  margin-bottom: 0;
}

.about {
  background: var(--white);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.about-content h3 {
  font-size: 36px;
  font-weight: 800;
  margin-bottom: 20px;
  line-height: 1.3;
}

.about-content p {
  font-size: 16px;
  color: var(--text-gray);
  margin-bottom: 20px;
  line-height: 1.8;
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 40px;
}

.about-stat {
  padding: 24px;
  background: var(--bg-light);
  border-radius: 16px;
  text-align: center;
}

.about-stat-num {
  font-size: 40px;
  font-weight: 800;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.about-stat-label {
  font-size: 14px;
  color: var(--text-gray);
  margin-top: 4px;
}

.about-image {
  position: relative;
}

.about-image-placeholder {
  aspect-ratio: 4/5;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border-radius: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 100px;
  color: rgba(255, 255, 255, 0.9);
}

.about-image-badge {
  position: absolute;
  bottom: -20px;
  left: -20px;
  background: var(--white);
  padding: 20px 28px;
  border-radius: 16px;
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 16px;
}

.about-badge-icon {
  width: 50px;
  height: 50px;
  background: var(--gradient);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 24px;
}

.about-badge-text h4 {
  font-size: 16px;
  font-weight: 700;
}

.about-badge-text p {
  font-size: 12px;
  color: var(--text-gray);
}

.cta {
  background: linear-gradient(135deg, #0f0f1a 0%, #1a1a2e 100%);
  position: relative;
  overflow: hidden;
}

.cta::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 30% 50%, rgba(255, 106, 0, 0.2) 0%, transparent 60%);
}

.cta-container {
  position: relative;
  z-index: 2;
  text-align: center;
  color: var(--white);
}

.cta-container h2 {
  font-size: 44px;
  font-weight: 800;
  margin-bottom: 16px;
}

.cta-container p {
  font-size: 18px;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 40px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

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

.contact {
  background: var(--white);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
}

.contact-info h3 {
  font-size: 32px;
  font-weight: 800;
  margin-bottom: 20px;
}

.contact-info > p {
  font-size: 16px;
  color: var(--text-gray);
  margin-bottom: 40px;
  line-height: 1.8;
}

.contact-items {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.contact-item {
  display: flex;
  gap: 20px;
  align-items: flex-start;
}

.contact-icon {
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, rgba(255, 106, 0, 0.1), rgba(238, 9, 121, 0.1));
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  flex-shrink: 0;
}

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

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

.contact-form {
  background: var(--bg-light);
  border-radius: 24px;
  padding: 40px;
}

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

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

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

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 14px 18px;
  border: 2px solid transparent;
  background: var(--white);
  border-radius: 12px;
  font-size: 15px;
  font-family: inherit;
  transition: var(--transition);
  color: var(--text-dark);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(255, 106, 0, 0.1);
}

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

.form-submit {
  width: 100%;
  padding: 16px;
  border-radius: 12px;
  background: var(--gradient);
  color: var(--white);
  font-weight: 600;
  font-size: 16px;
  cursor: pointer;
  border: none;
  transition: var(--transition);
}

.form-submit:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(255, 106, 0, 0.4);
}

.footer {
  background: var(--bg-dark);
  color: rgba(255, 255, 255, 0.7);
  padding: 80px 0 40px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 60px;
}

.footer-brand {
  max-width: 360px;
}

.footer-brand .nav-logo {
  color: var(--white);
  margin-bottom: 20px;
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  margin-bottom: 24px;
}

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

.footer-social a {
  width: 40px;
  height: 40px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  transition: var(--transition);
}

.footer-social a:hover {
  background: var(--gradient);
  transform: translateY(-3px);
}

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

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-col a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  transition: var(--transition);
}

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

.footer-bottom {
  padding-top: 40px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 13px;
}

.footer-bottom a {
  color: rgba(255, 255, 255, 0.5);
}

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

.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 52px;
  height: 52px;
  background: var(--gradient);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  cursor: pointer;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  z-index: 999;
  border: none;
}

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

.back-to-top:hover {
  transform: translateY(-5px);
}

.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s ease;
}

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

@media (max-width: 1024px) {
  .hero-title {
    font-size: 44px;
  }

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

  .hero-container,
  .solutions-row,
  .about-grid,
  .mini-program-grid,
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 60px;
  }

  .solutions-row.reverse {
    direction: ltr;
  }

  .hero-visual {
    order: -1;
  }

  .hero {
    padding-top: 120px;
  }

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

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--white);
    flex-direction: column;
    padding: 24px;
    gap: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  }

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

  .mobile-toggle {
    display: flex;
  }

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

  .hero-desc {
    font-size: 16px;
  }

  .hero-stats {
    gap: 24px;
  }

  .hero-stat-num {
    font-size: 28px;
  }

  .section-title {
    font-size: 30px;
  }

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

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

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

  .mini-preview {
    flex-direction: column;
    align-items: center;
  }

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

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

  .hero-float-card.card-1 {
    left: 0;
  }

  .hero-float-card.card-2 {
    right: 0;
  }

  .about-image-badge {
    left: 0;
    bottom: -40px;
  }

  .section {
    padding: 70px 0;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 30px;
  }

  .section-title {
    font-size: 26px;
  }

  .cta-container h2 {
    font-size: 30px;
  }

  .hero-float-card {
    padding: 12px 16px;
  }
}