/* JIUWEI Corporate Website - Flat Design Style */

/* CSS Variables */
:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    --secondary: #0891b2;
    --accent: #f59e0b;
    --dark: #1e293b;
    --dark-light: #334155;
    --gray: #64748b;
    --gray-light: #94a3b8;
    --light: #f1f5f9;
    --white: #ffffff;
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;
    --gradient-1: linear-gradient(135deg, #2563eb 0%, #0891b2 100%);
    --gradient-2: linear-gradient(135deg, #1e293b 0%, #334155 100%);
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --radius: 8px;
    --radius-lg: 16px;
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans SC", sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--dark);
    background-color: var(--white);
}

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

ul {
    list-style: none;
}

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

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.3;
    color: var(--dark);
}

h1 { font-size: 3rem; }
h2 { font-size: 2.25rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 28px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius);
    cursor: pointer;
    transition: var(--transition);
    border: none;
    text-align: center;
}

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

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

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

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

.btn-large {
    padding: 16px 36px;
    font-size: 1.1rem;
}

.btn-full {
    width: 100%;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--white);
    box-shadow: var(--shadow);
    z-index: 1000;
    padding: 15px 0;
}

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

.logo {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--primary);
    letter-spacing: -1px;
}

.nav-links {
    display: flex;
    gap: 35px;
}

.nav-links a {
    font-weight: 500;
    color: var(--dark);
    position: relative;
    padding: 5px 0;
}

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

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

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

.nav-right {
    display: flex;
    align-items: center;
    gap: 15px;
}

.lang-switch {
    padding: 8px 16px;
    background: var(--light);
    border: none;
    border-radius: var(--radius);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.lang-switch:hover {
    background: var(--primary);
    color: var(--white);
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
}


/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    background: var(--gradient-1);
    padding-top: 80px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

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

.hero-content h1 {
    color: var(--white);
    font-size: 3.5rem;
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero-content p {
    font-size: 1.25rem;
    opacity: 0.9;
    margin-bottom: 30px;
}

.hero-buttons {
    display: flex;
    gap: 15px;
}

.hero-visual {
    position: relative;
    height: 400px;
}

.floating-card {
    position: absolute;
    background: var(--white);
    padding: 20px 30px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    display: flex;
    align-items: center;
    gap: 15px;
    animation: float 3s ease-in-out infinite;
}

.floating-card .icon {
    font-size: 2rem;
}

.floating-card span:last-child {
    font-weight: 600;
    color: var(--dark);
}

.card-1 {
    top: 20%;
    left: 10%;
    animation-delay: 0s;
}

.card-2 {
    top: 45%;
    right: 5%;
    animation-delay: 0.5s;
}

.card-3 {
    bottom: 15%;
    left: 20%;
    animation-delay: 1s;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
}

/* Page Hero */
.page-hero {
    background: var(--gradient-1);
    padding: 140px 0 80px;
    text-align: center;
    color: var(--white);
}

.page-hero h1 {
    color: var(--white);
    margin-bottom: 15px;
}

.page-hero p {
    font-size: 1.2rem;
    opacity: 0.9;
}

.legal-hero {
    padding: 140px 0 60px;
}

/* Section Header */
.section-header {
    text-align: center;
    margin-bottom: 50px;
}

.section-header h2 {
    margin-bottom: 15px;
}

.section-header p {
    color: var(--gray);
    font-size: 1.1rem;
}

/* Features Section */
.features {
    padding: 100px 0;
    background: var(--light);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.feature-card {
    background: var(--white);
    padding: 40px 30px;
    border-radius: var(--radius-lg);
    text-align: center;
    transition: var(--transition);
    box-shadow: var(--shadow);
}

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

.feature-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.feature-card h3 {
    margin-bottom: 15px;
}

.feature-card p {
    color: var(--gray);
}

/* Stats Section */
.stats {
    padding: 80px 0;
    background: var(--gradient-2);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    text-align: center;
}

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

.stat-number {
    font-size: 3.5rem;
    font-weight: 800;
    display: block;
    margin-bottom: 10px;
}

.stat-number::after {
    content: "+";
}

.stat-label {
    font-size: 1rem;
    opacity: 0.8;
}

/* Services Preview */
.services-preview {
    padding: 100px 0;
}

.services-showcase {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.service-item {
    padding: 40px;
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--light);
}

.service-item:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-lg);
}

.service-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.service-item h3 {
    margin-bottom: 15px;
}

.service-item p {
    color: var(--gray);
    margin-bottom: 20px;
}

.service-link {
    color: var(--primary);
    font-weight: 600;
}

.service-link:hover {
    color: var(--primary-dark);
}


/* CTA Section */
.cta {
    padding: 100px 0;
    background: var(--gradient-1);
    text-align: center;
}

.cta-content h2 {
    color: var(--white);
    margin-bottom: 15px;
}

.cta-content p {
    color: var(--white);
    opacity: 0.9;
    margin-bottom: 30px;
    font-size: 1.1rem;
}

/* Services Detail Page */
.services-detail {
    padding: 80px 0;
}

.service-block {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    margin-bottom: 80px;
}

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

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

.service-badge {
    display: inline-block;
    background: var(--primary);
    color: var(--white);
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 15px;
}

.service-content h2 {
    margin-bottom: 20px;
}

.service-content p {
    color: var(--gray);
    margin-bottom: 25px;
}

.service-features {
    list-style: none;
}

.service-features li {
    padding: 10px 0;
    padding-left: 30px;
    position: relative;
    color: var(--dark);
}

.service-features li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--success);
    font-weight: bold;
}

.service-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.visual-box {
    width: 300px;
    height: 300px;
    border-radius: var(--radius-lg);
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: var(--shadow-xl);
}

.design-visual { background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); }
.integration-visual { background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%); }
.consulting-visual { background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%); }
.research-visual { background: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%); }

.visual-icon {
    font-size: 6rem;
}

/* Industries */
.industries {
    padding: 80px 0;
    background: var(--light);
}

.industries-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 20px;
}

.industry-card {
    background: var(--white);
    padding: 30px 20px;
    border-radius: var(--radius);
    text-align: center;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.industry-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow);
}

.industry-icon {
    font-size: 2.5rem;
    display: block;
    margin-bottom: 15px;
}

.industry-card h3 {
    font-size: 0.95rem;
    color: var(--dark);
}

/* Process Timeline */
.process {
    padding: 80px 0;
}

.process-timeline {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    position: relative;
}

.process-timeline::before {
    content: "";
    position: absolute;
    top: 40px;
    left: 12.5%;
    right: 12.5%;
    height: 3px;
    background: var(--primary);
}

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

.step-number {
    width: 80px;
    height: 80px;
    background: var(--primary);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.5rem;
    font-weight: 800;
    margin: 0 auto 20px;
    position: relative;
    z-index: 1;
}

.process-step h3 {
    margin-bottom: 10px;
}

.process-step p {
    color: var(--gray);
    font-size: 0.95rem;
}

/* About Page */
.about-intro {
    padding: 80px 0;
}

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

.about-content h2 {
    margin-bottom: 20px;
}

.about-content p {
    color: var(--gray);
    margin-bottom: 15px;
}

.about-image-placeholder {
    background: var(--gradient-1);
    border-radius: var(--radius-lg);
    height: 400px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.placeholder-content {
    text-align: center;
    color: var(--white);
}

.big-icon {
    font-size: 5rem;
    display: block;
    margin-bottom: 20px;
}

/* Mission Vision */
.mission-vision {
    padding: 80px 0;
    background: var(--light);
}

.mv-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
}

.mv-card {
    background: var(--white);
    padding: 50px;
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow);
}

.mv-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.mv-card h3 {
    margin-bottom: 15px;
    color: var(--primary);
}

.mv-card p {
    color: var(--gray);
}

/* Values */
.values {
    padding: 80px 0;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.value-card {
    text-align: center;
    padding: 40px 25px;
    border-radius: var(--radius-lg);
    background: var(--white);
    border: 2px solid var(--light);
    transition: var(--transition);
}

.value-card:hover {
    border-color: var(--primary);
}

.value-icon {
    font-size: 2.5rem;
    margin-bottom: 15px;
}

.value-card h3 {
    margin-bottom: 10px;
}

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


/* Team */
.team {
    padding: 80px 0;
    background: var(--light);
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.team-card {
    background: var(--white);
    padding: 40px 30px;
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.team-card:hover {
    transform: translateY(-5px);
}

.team-avatar {
    width: 100px;
    height: 100px;
    background: var(--gradient-1);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0 auto 20px;
}

.team-avatar span {
    font-size: 3rem;
}

.team-card h3 {
    margin-bottom: 5px;
}

.team-role {
    color: var(--gray);
}

/* Certifications */
.certifications {
    padding: 80px 0;
}

.cert-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.cert-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 20px;
    background: var(--light);
    border-radius: var(--radius);
}

.cert-icon {
    font-size: 1.5rem;
}

/* Portfolio */
.portfolio-filter {
    padding: 40px 0;
    background: var(--light);
}

.filter-buttons {
    display: flex;
    justify-content: center;
    gap: 15px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 10px 25px;
    background: var(--white);
    border: 2px solid var(--light);
    border-radius: var(--radius);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--primary);
    border-color: var(--primary);
    color: var(--white);
}

.portfolio-grid-section {
    padding: 60px 0;
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.portfolio-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

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

.portfolio-image {
    position: relative;
    height: 200px;
    overflow: hidden;
}

.portfolio-placeholder {
    width: 100%;
    height: 100%;
    background: var(--gradient-1);
    display: flex;
    justify-content: center;
    align-items: center;
}

.portfolio-placeholder span {
    font-size: 4rem;
}

.portfolio-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(37, 99, 235, 0.9);
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    transition: var(--transition);
}

.portfolio-card:hover .portfolio-overlay {
    opacity: 1;
}

.view-btn {
    color: var(--white);
    font-weight: 600;
    padding: 10px 25px;
    border: 2px solid var(--white);
    border-radius: var(--radius);
}

.portfolio-info {
    padding: 25px;
}

.portfolio-tag {
    display: inline-block;
    background: var(--light);
    color: var(--primary);
    padding: 4px 12px;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 10px;
}

.portfolio-info h3 {
    margin-bottom: 10px;
    font-size: 1.2rem;
}

.portfolio-info p {
    color: var(--gray);
    font-size: 0.95rem;
}

/* Testimonials */
.testimonials {
    padding: 80px 0;
    background: var(--light);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.testimonial-card {
    background: var(--white);
    padding: 40px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
}

.testimonial-content {
    margin-bottom: 25px;
}

.testimonial-content p {
    font-size: 1.1rem;
    color: var(--dark);
    font-style: italic;
    line-height: 1.8;
}

.testimonial-content p::before {
    content: open-quote;
    font-size: 2rem;
    color: var(--primary);
}

.testimonial-content p::after {
    content: close-quote;
    font-size: 2rem;
    color: var(--primary);
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 15px;
}

.author-avatar {
    width: 60px;
    height: 60px;
    background: var(--gradient-1);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.5rem;
}

.author-info h4 {
    margin-bottom: 3px;
}

.author-info span {
    color: var(--gray);
    font-size: 0.9rem;
}

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

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

.contact-info h2 {
    margin-bottom: 20px;
}

.contact-info > p {
    color: var(--gray);
    margin-bottom: 30px;
}

.contact-details {
    margin-bottom: 30px;
}

.contact-item {
    display: flex;
    gap: 20px;
    margin-bottom: 25px;
}

.contact-icon {
    font-size: 1.5rem;
}

.contact-item h4 {
    margin-bottom: 5px;
    color: var(--dark);
}

.contact-item a,
.contact-item p {
    color: var(--gray);
}

.contact-item a:hover {
    color: var(--primary);
}

.business-hours h3 {
    margin-bottom: 10px;
    font-size: 1.1rem;
}

.business-hours p {
    color: var(--gray);
}

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

.contact-form-wrapper h2 {
    margin-bottom: 25px;
}

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

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

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--light);
    border-radius: var(--radius);
    font-size: 1rem;
    transition: var(--transition);
    background: var(--white);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
}

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


/* Map */
.map-section {
    padding: 60px 0;
    background: var(--light);
}

.map-container {
    height: 400px;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
}

/* FAQ */
.faq {
    padding: 80px 0;
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.faq-item {
    background: var(--light);
    padding: 30px;
    border-radius: var(--radius-lg);
}

.faq-item h3 {
    margin-bottom: 15px;
    font-size: 1.1rem;
}

.faq-item p {
    color: var(--gray);
}

/* Legal Pages */
.legal-content {
    padding: 60px 0;
}

.legal-document {
    max-width: 900px;
    margin: 0 auto;
}

.legal-section {
    margin-bottom: 40px;
}

.legal-section h2 {
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: var(--primary);
}

.legal-section h3 {
    font-size: 1.2rem;
    margin: 25px 0 15px;
}

.legal-section p {
    color: var(--gray);
    margin-bottom: 15px;
    line-height: 1.8;
}

.legal-section ul {
    margin: 15px 0;
    padding-left: 25px;
}

.legal-section li {
    color: var(--gray);
    margin-bottom: 10px;
    position: relative;
    padding-left: 15px;
}

.legal-section li::before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--primary);
}

.contact-info-legal {
    background: var(--light);
    padding: 25px;
    border-radius: var(--radius);
    margin-top: 20px;
}

.contact-info-legal p {
    margin-bottom: 8px;
}

/* Footer */
.footer {
    background: var(--dark);
    color: var(--white);
    padding: 60px 0 30px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 2fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-brand h3 {
    font-size: 1.75rem;
    margin-bottom: 15px;
    color: var(--white);
}

.footer-brand p {
    color: var(--gray-light);
    margin-bottom: 10px;
}

.company-name {
    font-size: 0.9rem;
    opacity: 0.8;
}

.footer-links h4,
.footer-contact h4 {
    color: var(--white);
    margin-bottom: 20px;
}

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

.footer-links a {
    color: var(--gray-light);
}

.footer-links a:hover {
    color: var(--white);
}

.footer-contact p {
    color: var(--gray-light);
    margin-bottom: 10px;
    font-size: 0.95rem;
}

.footer-bottom {
    border-top: 1px solid var(--dark-light);
    padding-top: 25px;
    text-align: center;
}

.footer-bottom p {
    color: var(--gray-light);
    font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .features-grid,
    .stats-grid,
    .values-grid,
    .team-grid,
    .cert-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .industries-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .process-timeline {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .process-timeline::before {
        display: none;
    }
    
    .portfolio-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    h1 { font-size: 2.25rem; }
    h2 { font-size: 1.75rem; }
    
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        padding: 20px;
        gap: 15px;
        box-shadow: var(--shadow);
    }
    
    .nav-links.active {
        display: flex;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-content h1 {
        font-size: 2.5rem;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .hero-visual {
        display: none;
    }
    
    .features-grid,
    .services-showcase,
    .stats-grid,
    .mv-grid,
    .values-grid,
    .team-grid,
    .cert-grid,
    .testimonials-grid,
    .faq-grid {
        grid-template-columns: 1fr;
    }
    
    .service-block,
    .service-block.reverse,
    .about-grid,
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .service-block.reverse {
        direction: ltr;
    }
    
    .industries-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .process-timeline {
        grid-template-columns: 1fr;
    }
    
    .portfolio-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .filter-buttons {
        flex-direction: column;
        align-items: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .hero-content h1 {
        font-size: 2rem;
    }
    
    .btn {
        padding: 10px 20px;
    }
    
    .btn-large {
        padding: 12px 28px;
    }
    
    .feature-card,
    .service-item,
    .mv-card,
    .value-card,
    .team-card,
    .testimonial-card,
    .faq-item {
        padding: 25px 20px;
    }
    
    .contact-form-wrapper {
        padding: 25px 20px;
    }
    
    .legal-document {
        padding: 0 10px;
    }
}

/* Utility Classes */
.hidden {
    display: none !important;
}

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

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 10px; }
.mb-2 { margin-bottom: 20px; }
.mb-3 { margin-bottom: 30px; }