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

:root {
    --primary-color: #1a252f;
    --primary-light: #2c3e50;
    --secondary-color: #E85A2A;
    --secondary-light: #E85A2A;
    --background-color: #ffffff;
    --background-alt: #f8f9fa;
    --text-color: #2c3e50;
    --text-light: #6c757d;
    --text-muted: #adb5bd;
    --white: #ffffff;
    --gray-100: #f8f9fa;
    --gray-200: #e9ecef;
    --gray-300: #dee2e6;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.15);
    --transition-fast: all 0.2s ease;
    --transition-normal: all 0.3s ease;
    --transition-slow: all 0.5s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Open Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.7;
    font-size: 16px;
    overflow-x: hidden;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 40px;
}

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 rgba(0, 0, 0, 0.05);
    transition: var(--transition-normal);
}

header.scrolled {
    box-shadow: var(--shadow-md);
}

.navbar {
    padding: 1.25rem 0;
    transition: var(--transition-normal);
}

header.scrolled .navbar {
    padding: 0.75rem 0;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand a {
    font-family: 'Montserrat', sans-serif;
    font-size: 2rem;
    font-weight: 800;
    color: var(--primary-color);
    text-decoration: none;
    letter-spacing: -0.5px;
    transition: var(--transition-fast);
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-brand a:hover {
    transform: scale(1.02);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2.5rem;
}

.nav-link {
    font-family: 'Montserrat', sans-serif;
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--text-color);
    text-decoration: none;
    transition: var(--transition-fast);
    position: relative;
    padding: 0.5rem 0;
    letter-spacing: 0.3px;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--secondary-color) 0%, var(--secondary-light) 100%);
    transition: var(--transition-normal);
}

.nav-link:hover {
    color: var(--secondary-color);
}

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

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    background: none;
    border: none;
    padding: 0;
}

.bar {
    width: 28px;
    height: 2px;
    background: var(--primary-color);
    margin: 5px 0;
    transition: var(--transition-normal);
    border-radius: 2px;
}

.hamburger.active .bar:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

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

.hamburger.active .bar:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

.hero {
    min-height: 100vh;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 50%, #1a252f 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--white);
    padding: 120px 20px 80px;
    position: relative;
    overflow: hidden;
    background-image: url("../bg.jpg");
     /* 关键：设置背景图尺寸为100x100px */
  background-size: 1920 1080;
  
  /* 防止图标重复（必加，否则小图标会铺满容器） */
  background-repeat: no-repeat;
  background-size: cover;
  
  /* 让图标在容器中居中显示（可选，根据需求调整） */
  background-position: center center;
  
  /* 明确设置背景为透明（即使图片透明，容器背景也透明） */
  background-color: transparent;
  
  
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(212, 175, 55, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(212, 175, 55, 0.08) 0%, transparent 40%),
        radial-gradient(circle at 40% 80%, rgba(212, 175, 55, 0.06) 0%, transparent 30%);
    animation: float 20s ease-in-out infinite;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0) scale(1);
    }
    50% {
        transform: translateY(-20px) scale(1.02);
    }
}

.hero-content {
    max-width: 1100px;
    position: relative;
    z-index: 1;
}

.hero-title {
    font-family: 'Montserrat', sans-serif;
    font-size: 4.5rem;
    font-weight: 800;
    margin-bottom: 2rem;
    line-height: 1.1;
    letter-spacing: -1px;
    animation: fadeInUp 1s ease;
}

.hero-title span {
    background: linear-gradient(90deg, var(--secondary-color) 0%, var(--secondary-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.4rem;
    margin-bottom: 3rem;
    color: rgba(255, 255, 255, 0.85);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.6;
    animation: fadeInUp 1s ease 0.2s both;
}

.hero-buttons {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 1s ease 0.4s both;
}

.btn {
    display: inline-block;
    padding: 1rem 2.5rem;
    font-family: 'Montserrat', sans-serif;
    font-weight: 600;
    text-decoration: none;
    border-radius: 50px;
    transition: var(--transition-normal);
    border: 2px solid transparent;
    cursor: pointer;
    font-size: 1rem;
    letter-spacing: 0.3px;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: var(--transition-slow);
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    background: linear-gradient(135deg, var(--secondary-color) 0%, var(--secondary-light) 100%);
    color: var(--white);
    box-shadow: 0 4px 15px rgba(212, 175, 55, 0.4);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(212, 175, 55, 0.5);
}

.btn-secondary {
    background: transparent;
    color: var(--white);
    border-color: rgba(255, 255, 255, 0.4);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--white);
    transform: translateY(-3px);
}

.btn-full {
    width: 100%;
}

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

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

.section {
    padding: 120px 0;
    position: relative;
}

.section:nth-child(even) {
    background: var(--background-alt);
}

.section-header {
    text-align: center;
    margin-bottom: 5rem;
}

.section-title {
    font-family: 'Montserrat', sans-serif;
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    letter-spacing: -0.5px;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--secondary-color) 0%, var(--secondary-light) 100%);
    margin: 1.5rem auto 0;
    border-radius: 2px;
}

.section-subtitle {
    font-size: 1.2rem;
    color: var(--text-light);
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.7;
}

.about-content {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 5rem;
    align-items: start;
}

.about-text p {
    margin-bottom: 1.8rem;
    font-size: 1.1rem;
    color: var(--text-light);
    line-height: 1.8;
}

.about-cta {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--secondary-color);
    text-decoration: none;
    font-weight: 600;
    font-family: 'Montserrat', sans-serif;
    margin-top: 1rem;
    transition: var(--transition-fast);
}

.about-cta:hover {
    color: var(--primary-color);
    gap: 1rem;
}

.stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    margin-top: 4rem;
    padding: 3rem 0;
    border-top: 1px solid var(--gray-200);
    border-bottom: 1px solid var(--gray-200);
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-family: 'Montserrat', sans-serif;
    font-size: 3rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--secondary-color) 0%, var(--secondary-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 1rem;
    color: var(--text-light);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.about-image {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

.about-card {
    background: var(--white);
    padding: 2.5rem;
    border-radius: 20px;
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: var(--transition-normal);
    border: 1px solid var(--gray-100);
}

.about-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--secondary-color);
}

.about-card-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: var(--secondary-color);
    margin: 0 auto 1.5rem;
}

.about-card h3 {
    font-family: 'Montserrat', sans-serif;
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.about-card p {
    color: var(--text-light);
    font-size: 0.95rem;
    line-height: 1.7;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
    gap: 2.5rem;
}

.product-card {
    background: var(--white);
    border-radius: 24px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
    cursor: pointer;
    border: 1px solid var(--gray-100);
}

.product-card:hover {
    transform: translateY(-12px);
    box-shadow: var(--shadow-xl);
    border-color: var(--secondary-color);
}

.product-image {
    height: 240px;
    /** background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%); */
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 5rem;
    color: var(--secondary-color);
    position: relative;
    overflow: hidden;
}

.product-image::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
  /**   background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent); */
    transition: var(--transition-slow);
}

.product-card:hover .product-image::before {
    left: 100%;
}

.product-content {
    padding: 2.5rem;
}

.product-title {
    font-family: 'Montserrat', sans-serif;
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
    font-weight: 700;
}

.product-description {
    color: var(--text-light);
    margin-bottom: 2rem;
    line-height: 1.7;
    font-size: 1rem;
}

.product-link {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--secondary-color);
    text-decoration: none;
    font-weight: 600;
    font-family: 'Montserrat', sans-serif;
    transition: var(--transition-fast);
    font-size: 0.95rem;
}

.product-link:hover {
    color: var(--primary-color);
    gap: 1.25rem;
}

.product-link i {
    transition: var(--transition-fast);
}

.solutions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.solution-card {
    background: var(--white);
    padding: 3rem;
    border-radius: 20px;
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: var(--transition-normal);
    border: 1px solid var(--gray-100);
}

.solution-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--secondary-color);
}

.solution-icon {
    width: 100px;
    height: 100px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: var(--secondary-color);
    margin: 0 auto 2rem;
}

.solution-card h3 {
    font-family: 'Montserrat', sans-serif;
    font-size: 1.4rem;
    margin-bottom: 1.25rem;
    color: var(--primary-color);
}

.solution-card p {
    color: var(--text-light);
    margin-bottom: 2rem;
    line-height: 1.7;
}

.solution-features {
    list-style: none;
    text-align: left;
}

.solution-features li {
    padding: 0.75rem 0;
    color: var(--text-light);
    font-size: 1rem;
    display: flex;
    align-items: center;
}

.solution-features i {
    color: var(--secondary-color);
    margin-right: 0.75rem;
    font-size: 0.9rem;
}

.services-wrapper {
    display: grid;
    gap: 2rem;
}

.service-item {
    display: grid;
    grid-template-columns: 100px 1fr;
    gap: 2.5rem;
    align-items: start;
    background: var(--white);
    padding: 3rem;
    border-radius: 20px;
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
    border: 1px solid var(--gray-100);
}

.service-item:hover {
    transform: translateX(15px);
    box-shadow: var(--shadow-xl);
    border-color: var(--secondary-color);
}

.service-number {
    font-family: 'Montserrat', sans-serif;
    font-size: 4rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--secondary-color) 0%, var(--secondary-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
}

.service-content h3 {
    font-family: 'Montserrat', sans-serif;
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.service-content p {
    color: var(--text-light);
    line-height: 1.8;
    font-size: 1.05rem;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2.5rem;
}

.project-card {
    background: var(--white);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
    border: 1px solid var(--gray-100);
}

.project-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--secondary-color);
}

.project-image {
    height: 220px;
   /**  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%); */
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 5rem;
    color: var(--secondary-color);
    position: relative;
}

.project-image::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
   /**  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent); */
    transition: var(--transition-slow);
}

.project-card:hover .project-image::before {
    left: 100%;
}

.project-content {
    padding: 2.5rem;
}

.project-category {
    display: inline-block;
    background: linear-gradient(135deg, var(--secondary-color) 0%, var(--secondary-light) 100%);
    color: var(--white);
    padding: 0.5rem 1.25rem;
    border-radius: 25px;
    font-size: 0.85rem;
    font-weight: 700;
    margin-bottom: 1.25rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.project-card h3 {
    font-family: 'Montserrat', sans-serif;
    font-size: 1.4rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.project-card p {
    color: var(--text-light);
    margin-bottom: 2rem;
    line-height: 1.7;
    font-size: 1rem;
}

.project-stats {
    display: flex;
    gap: 2rem;
    font-size: 0.95rem;
    color: var(--text-light);
    padding-top: 1.5rem;
    border-top: 1px solid var(--gray-200);
}

.project-stats i {
    color: var(--secondary-color);
    margin-right: 0.5rem;
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 5rem;
}

.contact-info h3 {
    font-family: 'Montserrat', sans-serif;
    font-size: 2rem;
    margin-bottom: 1.5rem;
    color: var(--primary-color);
}

.contact-info > p {
    color: var(--text-light);
    margin-bottom: 2.5rem;
    line-height: 1.8;
    font-size: 1.1rem;
}

.contact-details {
    margin-bottom: 3rem;
}

.contact-item {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.contact-item i {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--secondary-color);
    flex-shrink: 0;
    font-size: 1.2rem;
}

.contact-item h4 {
    font-family: 'Montserrat', sans-serif;
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    color: var(--primary-color);
}

.contact-item p {
    color: var(--text-light);
    line-height: 1.6;
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-links a {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    text-decoration: none;
    transition: var(--transition-normal);
    font-size: 1.2rem;
}

.social-links a:hover {
    background: linear-gradient(135deg, var(--secondary-color) 0%, var(--secondary-light) 100%);
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.contact-form {
    background: var(--white);
    padding: 4rem;
    border-radius: 24px;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--gray-100);
}

.form-group {
    margin-bottom: 2rem;
}

.form-group label {
    display: block;
    font-family: 'Montserrat', sans-serif;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--primary-color);
    font-size: 0.95rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 1rem 1.25rem;
    border: 2px solid var(--gray-300);
    border-radius: 12px;
    font-family: 'Open Sans', sans-serif;
    font-size: 1rem;
    transition: var(--transition-fast);
    background: var(--background-alt);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--secondary-color);
    background: var(--white);
    box-shadow: 0 0 0 4px rgba(212, 175, 55, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 150px;
}

.footer {
    background: var(--primary-color);
    color: var(--white);
    padding: 5rem 0 2rem;
    position: relative;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 4rem;
    margin-bottom: 4rem;
}

.footer-section h3 {
    font-family: 'Montserrat', sans-serif;
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    background: linear-gradient(90deg, var(--secondary-color) 0%, var(--secondary-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-section h4 {
    font-family: 'Montserrat', sans-serif;
    font-size: 1.1rem;
    margin-bottom: 2rem;
    color: var(--white);
}

.footer-section p {
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.8;
    font-size: 1rem;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 1rem;
}

.footer-section ul a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: var(--transition-fast);
    display: inline-block;
}

.footer-section ul a:hover {
    color: var(--secondary-color);
    padding-left: 5px;
}

.newsletter-form {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
}

.newsletter-form input {
    flex: 1;
    padding: 1rem 1.25rem;
    border: none;
    border-radius: 50px;
    font-family: 'Open Sans', sans-serif;
    background: rgba(255, 255, 255, 0.1);
    color: var(--white);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: var(--transition-fast);
}

.newsletter-form input:focus {
    outline: none;
    background: rgba(255, 255, 255, 0.15);
    border-color: var(--secondary-color);
}

.newsletter-form input::placeholder {
    color: rgba(255, 255, 255, 0.6);
}

.newsletter-form button {
    padding: 1rem 2rem;
    background: linear-gradient(135deg, var(--secondary-color) 0%, var(--secondary-light) 100%);
    color: var(--white);
    border: none;
    border-radius: 50px;
    cursor: pointer;
    transition: var(--transition-normal);
    font-weight: 600;
    font-family: 'Montserrat', sans-serif;
}

.newsletter-form button:hover {
    transform: scale(1.05);
    box-shadow: 0 5px 20px rgba(212, 175, 55, 0.4);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 2.5rem;
    text-align: center;
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.95rem;
}

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

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@media (max-width: 1200px) {
    .container {
        padding: 0 30px;
    }
    
    .hero-title {
        font-size: 3.5rem;
    }
    
    .section-title {
        font-size: 2.5rem;
    }
}

@media (max-width: 1024px) {
    .about-content {
        grid-template-columns: 1fr;
    }
    
    .contact-wrapper {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
    
    .stats {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 20px;
    }
    
    .hero-title {
        font-size: 2.8rem;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
    }
    
    .section {
        padding: 80px 0;
    }
    
    .section-title {
        font-size: 2.2rem;
    }
    
    .hamburger {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 0;
        flex-direction: column;
        background: var(--white);
        width: 100%;
        height: 100vh;
        justify-content: center;
        align-items: center;
        transition: var(--transition-normal);
        padding: 2rem;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-menu li {
        margin: 1.5rem 0;
    }
    
    .nav-link {
        font-size: 1.2rem;
    }
    
    .products-grid,
    .solutions-grid,
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .service-item {
        grid-template-columns: 80px 1fr;
        gap: 1.5rem;
    }
    
    .service-number {
        font-size: 3rem;
    }
    
    .contact-form {
        padding: 2.5rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2.2rem;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }
    
    .btn {
        width: 100%;
        text-align: center;
    }
    
    .stats {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .service-item {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .service-number {
        margin-bottom: 1rem;
    }
    
    .contact-form {
        padding: 2rem;
    }
}