/* Reset và Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
}

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

/* Promotional Banner */
.promo-banner {
    background: linear-gradient(135deg, #f56565 0%, #e53e3e 100%);
    color: white;
    padding: 12px 0;
    position: fixed;
    top: 70px;
    width: 100%;
    z-index: 999;
    box-shadow: 0 2px 10px rgba(245, 101, 101, 0.3);
    animation: pulse-banner 2s infinite;
}

.promo-banner p {
    text-align: center;
    margin: 0;
    font-weight: 600;
    font-size: 14px;
}

.promo-banner a {
    color: #ffd700;
    text-decoration: underline;
    font-weight: bold;
}

.promo-banner a:hover {
    color: white;
}

@keyframes pulse-banner {
    0%, 100% { box-shadow: 0 2px 10px rgba(245, 101, 101, 0.3); }
    50% { box-shadow: 0 2px 20px rgba(245, 101, 101, 0.6); }
}

/* Header */
.header {
    background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
    color: #2d3748;
    padding: 0.5rem 0;
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    box-shadow: 0 2px 20px rgba(0,0,0,0.1);
    border-bottom: 1px solid #e2e8f0;
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
}

.logo h2 {
    font-size: 1.5rem;
    font-weight: bold;
    color: #2d3748;
}

.logo i {
    color: #3182ce;
    margin-right: 0.5rem;
}

.nav ul {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav a {
    color: #4a5568;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav a:hover {
    color: #3182ce;
}

.mobile-menu-btn {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: #2d3748;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.95) 0%, rgba(247, 250, 252, 0.95) 100%), url('image/img1.jpg') center/cover;
    color: #2d3748;
    padding: 150px 0 60px;
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.9) 0%, rgba(247, 250, 252, 0.8) 100%);
    z-index: 1;
}

.hero .container {
    position: relative;
    z-index: 2;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.hero-text h1 {
    font-size: 3rem;
    font-weight: bold;
    margin-bottom: 1rem;
    line-height: 1.2;
    color: #2d3748;
}

.hero-text h2 {
    font-size: 1.5rem;
    color: #3182ce;
    margin-bottom: 1.5rem;
    font-weight: 600;
}

.hero-text p {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    color: #4a5568;
}

.hero-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    margin-bottom: 2rem;
}

.feature {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
}

.feature i {
    color: #3182ce;
    font-size: 1.1rem;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.hero-image img {
    width: 100%;
    height: auto;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 12px 24px;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background: #3182ce;
    color: white;
}

.btn-primary:hover {
    background: #2c5aa0;
    transform: translateY(-2px);
}

.btn-secondary {
    background: transparent;
    color: #3182ce;
    border: 2px solid #3182ce;
}

.btn-secondary:hover {
    background: #3182ce;
    color: white;
}

.btn-outline {
    background: transparent;
    color: #3182ce;
    border: 2px solid #3182ce;
}

.btn-outline:hover {
    background: #3182ce;
    color: white;
}

.btn-zalo {
    background: #0068ff;
    color: white;
}

.btn-zalo:hover {
    background: #0052cc;
    transform: translateY(-2px);
    color: white;
}

/* Promotion Banner */
.promotion {
    background: linear-gradient(135deg, #e6fffa 0%, #f0fff4 100%);
    padding: 2rem 0;
    color: #2d3748;
}

.promotion-content h3 {
    text-align: center;
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: #2d3748;
}

.promotion-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
    text-align: center;
}

.promo-item {
    background: white;
    padding: 1.5rem;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    border: 1px solid #e2e8f0;
}

.promo-item i {
    font-size: 2rem;
    color: #3182ce;
}

.promo-item span {
    font-weight: 600;
    color: #2d3748;
}

/* Section Styles */
section {
    padding: 4rem 0;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #2d3748;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: linear-gradient(to right, #3182ce, #63b3ed);
    border-radius: 2px;
}

.section-subtitle {
    font-size: 1.2rem;
    color: #718096;
    text-align: center;
    margin-bottom: 3rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.6;
}

/* Services Section */
.services {
    background: #f8fafc;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.service-card {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    text-align: center;
    transition: transform 0.3s ease;
}

.service-card:hover {
    transform: translateY(-10px);
}

.service-image {
    width: 100%;
    height: 200px;
    overflow: hidden;
    border-radius: 12px;
    margin-bottom: 1.5rem;
}

.service-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.service-card:hover .service-image img {
    transform: scale(1.05);
}

.service-icon {
    background: linear-gradient(135deg, #3182ce 0%, #63b3ed 100%);
    width: 80px;
    height: 80px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.service-icon i {
    font-size: 2rem;
    color: white;
}

.service-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: #2d3748;
}

.service-card p {
    margin-bottom: 1.5rem;
    color: #718096;
}

.service-card ul {
    list-style: none;
    margin-bottom: 2rem;
    text-align: left;
}

.service-card li {
    padding: 0.5rem 0;
    position: relative;
    padding-left: 1.5rem;
    color: #4a5568;
}

.service-card li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #3182ce;
    font-weight: bold;
}

/* About Section */
.about {
    background: white;
    padding: 6rem 0;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-intro {
    font-size: 1.2rem;
    color: #4a5568;
    margin-bottom: 2rem;
    line-height: 1.8;
}

.about-features {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.about-feature {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
}

.about-feature .feature-icon {
    background: linear-gradient(135deg, #3182ce 0%, #63b3ed 100%);
    width: 50px;
    height: 50px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    margin-bottom: 0;
    transition: transform 0.3s ease;
}

.about-feature:hover .feature-icon {
    transform: scale(1.1);
}

.about-feature .feature-icon i {
    font-size: 1.2rem;
    color: white;
    display: block;
}

.about-feature h4 {
    font-size: 1.3rem;
    color: #2d3748;
    margin-bottom: 0.5rem;
}

.about-feature p {
    color: #718096;
    line-height: 1.6;
}

.about-images {
    position: relative;
}

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

.image-item {
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.image-item:hover {
    transform: translateY(-5px);
}

.image-item img {
    width: 100%;
    height: 250px;
    object-fit: cover;
}

.image-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
    color: white;
    padding: 2rem 1rem 1rem;
    font-weight: 600;
    text-align: center;
}

/* Pricing Section */
.pricing {
    background: linear-gradient(135deg, #f7fafc 0%, #edf2f7 100%);
}

.pricing-image-container {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    margin-bottom: 2rem;
    text-align: center;
    padding: 1.5rem;
}

.pricing-image {
    width: 100%;
    max-width: 900px;
    height: auto;
    border-radius: 8px;
}

.pricing-note {
    background: linear-gradient(135deg, #e6fffa 0%, #b2f5ea 100%);
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    border: 1px solid #81e6d9;
}

.pricing-note p {
    margin-bottom: 1.5rem;
    color: #2d3748;
    font-size: 1rem;
}

.pricing-note i {
    color: #319795;
    margin-right: 0.5rem;
}

.pricing-cta {
    margin-top: 1rem;
}

/* Process Section */
.process {
    background: white;
}

.process-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.process-step {
    text-align: center;
    position: relative;
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.process-step:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.process-step .step-image {
    width: 100%;
    height: 200px;
    overflow: hidden;
    border-radius: 12px;
    margin-bottom: 1.5rem;
}

.process-step .step-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.process-step:hover .step-image img {
    transform: scale(1.05);
}

.step-number {
    background: linear-gradient(135deg, #3182ce 0%, #63b3ed 100%);
    color: white;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: bold;
    margin: 0 auto 1.5rem;
}

.step-content h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: #2d3748;
}

.step-content p {
    color: #718096;
    line-height: 1.6;
}

/* Why Choose Us Section */
.why-choose {
    background: #f8fafc;
}

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

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

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

.feature-icon {
    background: linear-gradient(135deg, #e6fffa 0%, #f0fff4 100%);
    width: 60px;
    height: 60px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem auto;
    border: 1px solid #e2e8f0;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-icon:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(49, 130, 206, 0.2);
}

.feature-icon i {
    font-size: 1.5rem;
    color: #3182ce;
    display: block;
}

.feature-card h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: #2d3748;
}

.feature-card p {
    color: #718096;
    line-height: 1.6;
}

/* Coverage Area */
.coverage {
    background: white;
}

.coverage-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2.5rem;
}

.coverage-grid.single-column {
    max-width: 800px;
    margin: 0 auto;
    grid-template-columns: 1fr;
}

.coverage-item h3 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: #2d3748;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.coverage-item i {
    color: #3182ce;
}

.area-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.area-list span {
    background: linear-gradient(135deg, #3182ce 0%, #63b3ed 100%);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
}

.branches-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    max-height: 400px;
    overflow-y: auto;
}

.branch-item {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 1rem;
    background: linear-gradient(135deg, #f7fafc 0%, #edf2f7 100%);
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.branch-item:hover {
    background: linear-gradient(135deg, #e6fffa 0%, #f0fff4 100%);
    border-color: #3182ce;
    transform: translateX(5px);
}

.branch-item i {
    color: #3182ce;
    font-size: 1rem;
    margin-top: 2px;
    flex-shrink: 0;
}

.branch-item span {
    font-size: 0.95rem;
    line-height: 1.5;
    color: #2d3748;
}

.branch-item strong {
    color: #3182ce;
    font-weight: 600;
}

/* Testimonials */
.testimonials {
    background: #f8fafc;
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.testimonial-card {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.testimonial-content p {
    font-style: italic;
    color: #4a5568;
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
    line-height: 1.7;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.user-avatar {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: linear-gradient(135deg, #3182ce 0%, #63b3ed 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.user-avatar.female {
    background: linear-gradient(135deg, #ed64a6 0%, #f093fb 100%);
}

.user-avatar.manager {
    background: linear-gradient(135deg, #38a169 0%, #68d391 100%);
}

.testimonial-author img {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    object-fit: cover;
}

.testimonial-author h4 {
    color: #2d3748;
    margin-bottom: 0.25rem;
}

.testimonial-author p {
    color: #718096;
    font-size: 0.9rem;
}

/* Contact Section */
.contact {
    background: white;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}

.contact-image-container {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 1rem;
}

.contact-image {
    max-width: 100%;
    height: auto;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.contact-info h3 {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    color: #2d3748;
}

.contact-item {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
}

.contact-item i {
    font-size: 1.5rem;
    color: #3182ce;
    margin-top: 0.25rem;
}

.contact-item h4 {
    color: #2d3748;
    margin-bottom: 0.5rem;
}

.contact-item p {
    color: #718096;
    margin-bottom: 0.25rem;
}

.contact-item a {
    color: #3182ce;
    text-decoration: none;
    font-weight: 600;
}

.contact-item a:hover {
    color: #2c5aa0;
}

/* FAQ Section */
.faq {
    background: #f7fafc;
    padding: 4rem 0;
}

.faq-container {
    max-width: 800px;
    margin: 0 auto;
    display: grid;
    gap: 1rem;
}

.faq-item {
    background: white;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    overflow: hidden;
    transition: all 0.3s ease;
}

.faq-item:hover {
    box-shadow: 0 8px 25px rgba(0,0,0,0.15);
}

.faq-question {
    padding: 1.5rem;
    background: white;
    cursor: pointer;
    font-size: 1.1rem;
    font-weight: 600;
    color: #2d3748;
    border: none;
    outline: none;
    list-style: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: background 0.3s ease;
}

.faq-question:hover {
    background: #f8fafc;
}

.faq-question::-webkit-details-marker {
    display: none;
}

.faq-question::marker {
    display: none;
}

.faq-question i {
    color: #3182ce;
    font-size: 1rem;
}

.faq-answer {
    padding: 0 1.5rem 1.5rem 1.5rem;
    background: white;
}

.faq-answer p {
    margin: 0;
    color: #4a5568;
    line-height: 1.6;
}

.faq-item[open] .faq-question {
    border-bottom: 1px solid #e2e8f0;
}

/* Footer */
.footer {
    background: #f7fafc;
    color: #2d3748;
    padding: 3rem 0 1rem;
    border-top: 1px solid #e2e8f0;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: 1rem;
    color: #3182ce;
}

.footer-section p {
    margin-bottom: 1rem;
    color: #4a5568;
    line-height: 1.6;
}

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

.footer-section li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: #4a5568;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section a:hover {
    color: #3182ce;
}

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

.social-links a {
    background: #e2e8f0;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.3s ease;
    color: #4a5568;
}

.social-links a:hover {
    background: #3182ce;
    color: white;
}

.quick-contact {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.quick-contact a {
    color: white;
}

.contact-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: #3182ce;
    border-radius: 6px;
    transition: background 0.3s ease;
    color: white;
}

.contact-btn:hover {
    background: #2c5aa0;
    color: white;
}

.contact-btn.zalo-btn {
    background: #0068ff;
}

.contact-btn.zalo-btn:hover {
    background: #0052cc;
}

.footer-bottom {
    border-top: 1px solid #e2e8f0;
    padding-top: 1rem;
    text-align: center;
    color: #4a5568;
}

/* Fixed Call Button */
.fixed-call {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

/* Back to Top Button */
.back-to-top {
    position: fixed;
    bottom: 20px;
    left: 20px;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 1000;
    transition: all 0.3s ease;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    box-shadow: 0 4px 20px rgba(79, 70, 229, 0.3);
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 25px rgba(79, 70, 229, 0.4);
    background: linear-gradient(135deg, #5b21b6 0%, #8b5cf6 100%);
}

.back-to-top i {
    font-size: 18px;
}

.call-btn, .fixed-call .zalo-btn {
    padding: 12px 18px;
    border-radius: 50px;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    font-weight: 600;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    font-size: 14px;
    white-space: nowrap;
}

.call-btn {
    background: linear-gradient(135deg, #3182ce 0%, #63b3ed 100%);
    color: white;
    animation: pulse 2s infinite;
}

.fixed-call .zalo-btn {
    background: linear-gradient(135deg, #0068ff 0%, #3399ff 100%);
    color: white;
}

.call-btn:hover, .fixed-call .zalo-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(0, 0, 0, 0.2);
    color: white;
}

@keyframes pulse {
    0% {
        box-shadow: 0 4px 20px rgba(49, 130, 206, 0.4);
    }
    50% {
        box-shadow: 0 4px 20px rgba(49, 130, 206, 0.8);
    }
    100% {
        box-shadow: 0 4px 20px rgba(49, 130, 206, 0.4);
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .mobile-menu-btn {
        display: block;
    }
    
    .nav ul {
        display: none;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-text h1 {
        font-size: 2rem;
    }
    
    .hero-text h2 {
        font-size: 1.2rem;
    }
    
    .hero-features {
        grid-template-columns: 1fr;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .services-grid,
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .process-grid {
        grid-template-columns: 1fr;
    }
    
    .process-step {
        padding: 1.5rem;
    }
    
    .process-step .step-image {
        height: 150px;
    }
    
    .coverage-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .branches-list {
        max-height: 300px;
    }
    
    .branch-item {
        padding: 0.75rem;
        font-size: 0.9rem;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .about-text {
        text-align: center;
    }
    
    .faq-question h4 {
        font-size: 1rem;
    }
    
    .faq-question {
        padding: 1rem;
    }
    
    .faq-answer {
        padding: 0 1rem;
    }
    
    .faq-item.active .faq-answer {
        padding: 1rem;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-image-container {
        display: none; /* Ẩn ảnh trên mobile */
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .promotion-grid {
        grid-template-columns: 1fr;
    }
    
    .testimonials-grid {
        grid-template-columns: 1fr;
    }
    
    .pricing-header,
    .pricing-row {
        grid-template-columns: 1fr;
    }
    
    .col-header,
    .pricing-cell {
        border-right: none;
        border-bottom: 1px solid #e2e8f0;
    }
    
    .pricing-cell.limit {
        text-align: center;
        justify-content: center;
        padding-left: 1rem;
        background: #3182ce;
        color: white;
        font-weight: 700;
    }
    
    .fixed-call {
        bottom: 10px;
        right: 10px;
        gap: 8px;
    }
    
    .back-to-top {
        bottom: 10px;
        left: 10px;
        width: 45px;
        height: 45px;
    }
    
    .back-to-top i {
        font-size: 16px;
    }
    
    .call-btn, .fixed-call .zalo-btn {
        padding: 10px 14px;
        font-size: 0.85rem;
    }
    
    .call-btn span, .fixed-call .zalo-btn span {
        display: none;
    }

    .hero-text {
        margin-top: 50px;
    } 
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .promo-banner {
        font-size: 12px;
        padding: 8px 0;
    }
    
    .hero {
        padding: 120px 0 40px;
    }
    
    .hero-text h1 {
        font-size: 1.5rem;
    }
    
    .hero-text h2 {
        font-size: 1rem;
    }
    
    .btn {
        padding: 10px 16px;
        font-size: 0.9rem;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
    
    .process-step {
        padding: 1rem;
    }
    
    .process-step .step-image {
        height: 120px;
    }
    
    .step-content h3 {
        font-size: 1.1rem;
    }
    
    .coverage-grid {
        grid-template-columns: 1fr;
    }
    
    .coverage-item {
        min-width: auto;
    }
    
    .faq-question {
        padding: 0.8rem;
    }
    
    .faq-question h4 {
        font-size: 0.95rem;
    }
    
    .faq-answer {
        padding: 0 0.8rem;
    }
    
    .faq-item.active .faq-answer {
        padding: 0.8rem;
    }
    
    .back-to-top {
        width: 40px;
        height: 40px;
        bottom: 80px;
        left: 10px;
    }
    
    .back-to-top i {
        font-size: 14px;
    }
    
    .call-btn span {
        display: none;
    }
    .hero-text {
        margin-top: 50px;
    } 
}