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

body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
}

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

header {
    background-color: #fff;
    border-bottom: 1px solid #e0e0e0;
    padding: 15px 0;
}

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

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

.logo img {
    height: 50px;
    width: auto;
    object-fit: contain;
}

nav {
    display: flex;
    align-items: center;
    gap: 30px;
}

nav a {
    text-decoration: none;
    color: #333;
    font-size: 14px;
}

nav a:hover {
    color: #2c5aa0;
}

.btn-login {
    background-color: #2c5aa0;
    color: #fff;
    padding: 8px 20px;
    border-radius: 4px;
}

.hero {
    background: linear-gradient(135deg, #1a3a6b 0%, #2c5aa0 100%);
    color: #fff;
    padding: 60px 0;
}

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

.hero-content h1 {
    font-size: 42px;
    margin-bottom: 20px;
}

.hero-content p {
    font-size: 16px;
    margin-bottom: 30px;
    color: #ddd;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    margin-bottom: 50px;
}

.btn-primary {
    background-color: #fff;
    color: #2c5aa0;
    padding: 12px 30px;
    text-decoration: none;
    border-radius: 4px;
    font-size: 16px;
}

.btn-secondary {
    background-color: transparent;
    color: #fff;
    padding: 12px 30px;
    text-decoration: none;
    border: 1px solid #fff;
    border-radius: 4px;
    font-size: 16px;
}

.hero-features {
    display: flex;
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.feature-item {
    flex: 1;
}

.feature-item h3 {
    font-size: 16px;
    margin-bottom: 5px;
}

.feature-item p {
    font-size: 14px;
    color: #bbb;
}

.services {
    padding: 60px 0;
    background-color: #fff;
}

.services h2 {
    text-align: center;
    font-size: 32px;
    margin-bottom: 15px;
    color: #333;
}

.section-desc {
    text-align: center;
    color: #666;
    margin-bottom: 40px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.service-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 40px;
}

.service-card {
    background-color: #f9f9f9;
    padding: 30px;
    border-radius: 8px;
    border: 1px solid #e0e0e0;
}

.service-icon {
    margin-bottom: 20px;
}

.service-icon img {
    width: 60px;
    height: 60px;
    object-fit: cover;
    border-radius: 4px;
}

.service-card h3 {
    font-size: 20px;
    margin-bottom: 15px;
    color: #333;
}

.service-card p {
    font-size: 14px;
    color: #666;
    margin-bottom: 20px;
    line-height: 1.6;
}

.service-card ul {
    list-style: none;
}

.service-card ul li {
    font-size: 14px;
    color: #666;
    padding: 5px 0;
    border-bottom: 1px solid #e0e0e0;
}

.service-card ul li:last-child {
    border-bottom: none;
}

.optimization {
    padding: 60px 0;
    background-color: #f0f4f8;
}

.optimization h2 {
    text-align: center;
    font-size: 32px;
    margin-bottom: 15px;
    color: #333;
}

.optimization-content {
    display: flex;
    gap: 50px;
    align-items: center;
    margin-top: 40px;
}

.optimization-text {
    flex: 1;
}

.optimization-text h3 {
    font-size: 24px;
    margin-bottom: 20px;
    color: #333;
}

.optimization-text ul {
    list-style: none;
    margin-bottom: 30px;
}

.optimization-text ul li {
    padding: 10px 0;
    font-size: 15px;
    color: #666;
    border-bottom: 1px solid #ddd;
}

.btn-learn {
    display: inline-block;
    background-color: #2c5aa0;
    color: #fff;
    padding: 10px 30px;
    text-decoration: none;
    border-radius: 4px;
}

.optimization-image {
    flex: 1;
}

.optimization-image img {
    width: 500px;
    height: 350px;
    object-fit: cover;
    border-radius: 8px;
}

.solutions {
    padding: 60px 0;
    background-color: #fff;
}

.solutions h2 {
    text-align: center;
    font-size: 32px;
    margin-bottom: 15px;
    color: #333;
}

.solution-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 40px;
}

.solution-card {
    background-color: #fff;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    overflow: hidden;
}

.solution-card img {
    width: 360px;
    height: 200px;
    object-fit: cover;
}

.solution-content {
    padding: 25px;
}

.solution-content h3 {
    font-size: 20px;
    margin-bottom: 15px;
    color: #333;
}

.solution-content p {
    font-size: 14px;
    color: #666;
    margin-bottom: 20px;
    line-height: 1.6;
}

.solution-features {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
}

.solution-features span {
    background-color: #f0f4f8;
    color: #2c5aa0;
    padding: 5px 15px;
    border-radius: 15px;
    font-size: 12px;
}

.btn-detail {
    display: inline-block;
    background-color: #2c5aa0;
    color: #fff;
    padding: 8px 25px;
    text-decoration: none;
    border-radius: 4px;
    font-size: 14px;
}

.about-section {
    padding: 60px 0;
    background-color: #f9f9f9;
}

.about-section h2 {
    font-size: 32px;
    margin-bottom: 20px;
    color: #333;
}

.about-content {
    display: flex;
    gap: 50px;
    align-items: center;
}

.about-text {
    flex: 1;
}

.about-text p {
    font-size: 15px;
    color: #666;
    margin-bottom: 20px;
    line-height: 1.8;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin: 30px 0;
}

.stat-item {
    text-align: center;
    padding: 20px;
    background-color: #fff;
    border-radius: 8px;
}

.stat-item h3 {
    font-size: 28px;
    color: #2c5aa0;
    margin-bottom: 5px;
}

.stat-item p {
    font-size: 14px;
    color: #666;
}

.btn-about {
    display: inline-block;
    background-color: #2c5aa0;
    color: #fff;
    padding: 10px 30px;
    text-decoration: none;
    border-radius: 4px;
}

.about-image {
    flex: 1;
}

.about-image img {
    width: 500px;
    height: 400px;
    object-fit: cover;
    border-radius: 8px;
}

.contact-section {
    padding: 60px 0;
    background-color: #fff;
}

.contact-section h2 {
    text-align: center;
    font-size: 32px;
    margin-bottom: 15px;
    color: #333;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    margin-top: 40px;
}

.contact-info h3 {
    font-size: 24px;
    margin-bottom: 30px;
    color: #333;
}

.info-item {
    margin-bottom: 30px;
}

.info-item strong {
    display: block;
    font-size: 16px;
    color: #333;
    margin-bottom: 10px;
}

.info-item p {
    font-size: 14px;
    color: #666;
    margin: 5px 0;
}

.contact-form h3 {
    font-size: 24px;
    margin-bottom: 30px;
    color: #333;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    margin-bottom: 15px;
}

.form-group {
    margin-bottom: 15px;
}

.contact-form input,
.contact-form textarea,
.contact-form select {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
}

.contact-form textarea {
    resize: vertical;
}

.btn-submit {
    background-color: #2c5aa0;
    color: #fff;
    padding: 12px 40px;
    border: none;
    border-radius: 4px;
    font-size: 16px;
    cursor: pointer;
}

footer {
    background-color: #1a1a1a;
    color: #fff;
    padding: 40px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 30px;
}

.footer-column h3 {
    font-size: 20px;
    margin-bottom: 15px;
}

.footer-column h4 {
    font-size: 16px;
    margin-bottom: 15px;
}

.footer-column p {
    font-size: 14px;
    color: #aaa;
    line-height: 1.6;
}

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

.footer-column ul li {
    margin-bottom: 10px;
}

.footer-column ul li a {
    color: #aaa;
    text-decoration: none;
    font-size: 14px;
}

.footer-column ul li a:hover {
    color: #fff;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #333;
}

.footer-bottom p {
    font-size: 14px;
    color: #aaa;
}

.service-detail {
    margin-top: 60px;
}

.service-detail h2 {
    text-align: center;
    font-size: 32px;
    margin-bottom: 40px;
    color: #333;
}

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

.advantage-item {
    background-color: #f9f9f9;
    padding: 30px;
    border-radius: 8px;
    border: 1px solid #e0e0e0;
}

.advantage-item h3 {
    font-size: 20px;
    margin-bottom: 15px;
    color: #333;
}

.advantage-item p {
    font-size: 14px;
    color: #666;
    line-height: 1.6;
}

.industry-solutions {
    margin-top: 60px;
}

.industry-solutions h2 {
    text-align: center;
    font-size: 32px;
    margin-bottom: 15px;
    color: #333;
}

.company-values {
    margin-top: 60px;
}

.company-values h2 {
    text-align: center;
    font-size: 32px;
    margin-bottom: 40px;
    color: #333;
}

.team-intro {
    margin-top: 60px;
}

.team-intro h2 {
    text-align: center;
    font-size: 32px;
    margin-bottom: 15px;
    color: #333;
}

.partners {
    margin-top: 60px;
}

.partners h2 {
    text-align: center;
    font-size: 32px;
    margin-bottom: 15px;
    color: #333;
}

.partner-list {
    margin-top: 40px;
}

.partner-list p {
    font-size: 15px;
    color: #666;
    line-height: 1.8;
    margin-bottom: 20px;
}

.office-info {
    margin-top: 60px;
}

.office-info h2 {
    text-align: center;
    font-size: 32px;
    margin-bottom: 15px;
    color: #333;
}