/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Arial', sans-serif;
    line-height: 1.6;
    color: #e1e1e3;
    background-color: #070f12;
}

/* Header and Navigation */
header {
    position: fixed;
    width: 100%;
    background: rgba(7, 15, 18, 0.98);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    border-bottom: 1px solid rgba(127, 180, 239, 0.1);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.8rem 5%;
    max-width: 1400px;
    margin: 0 auto;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    padding: 0;
    z-index: 1001;
    margin: 0;
    display: flex;
    align-items: center;
}

.logo img {
    height: 120px;
    width: auto;
    display: block;
    margin: 0;
    transition: transform 0.3s ease;
    border-radius: 16px;
}

.logo img:hover {
    transform: scale(1.02);
}

.nav-links {
    display: flex;
    list-style: none;
    align-items: center;
    gap: 2.5rem;
    margin-left: 2rem;
    margin-right: 0;
    padding: 0;
}

/* 左侧菜单 */
.nav-links.left {
    justify-self: start;
}
/* 右侧菜单 */
.nav-links.right {
    justify-self: end;
}

.nav-links li a {
    text-decoration: none;
    color: #e1e1e3;
    font-weight: 500;
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    transition: all 0.3s ease;
    padding: 0.5rem 0;
    position: relative;
    white-space: nowrap;
}

.nav-links li a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, #7FB4EF, #6980DF);
    transition: width 0.3s ease;
}

.nav-links li a:hover {
    color: #7FB4EF;
}

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

/* Hamburger Menu */
.hamburger {
    display: none;
    cursor: pointer;
    z-index: 1001;
}

.hamburger span {
    display: block;
    width: 25px;
    height: 2px;
    background: #e1e1e3;
    margin: 5px 0;
    transition: all 0.3s ease;
}

/* Hero Section */
.hero {
    height: 100vh;
    background: linear-gradient(rgba(7, 15, 18, 0.7), rgba(7, 15, 18, 0.7)), 
                url('https://images.unsplash.com/photo-1600210492493-0946911123ea?auto=format&fit=crop&q=80');
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: #e1e1e3;
    position: relative;
}

.hero::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 150px;
    background: linear-gradient(to top, #070f12, transparent);
}

.hero-content {
    padding: 2rem;
    max-width: 800px;
    position: relative;
    text-align: center;
}

.hero h1 {
    font-size: 4rem;
    margin-bottom: 1.5rem;
    line-height: 1.2;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.hero p {
    font-size: 1.5rem;
    margin-bottom: 2.5rem;
    opacity: 0.9;
    font-weight: 300;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-features {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 2.5rem;
    flex-wrap: wrap;
}

.feature {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    background: rgba(127, 180, 239, 0.1);
    padding: 0.8rem 1.5rem;
    border-radius: 50px;
    border: 1px solid rgba(127, 180, 239, 0.2);
    transition: all 0.3s ease;
}

.feature:hover {
    background: rgba(127, 180, 239, 0.15);
    transform: translateY(-2px);
}

.feature i {
    color: #7FB4EF;
    font-size: 1.2rem;
}

.feature span {
    color: #e1e1e3;
    font-size: 1rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.cta-button {
    display: inline-block;
    background: linear-gradient(135deg, #7FB4EF, #6980DF);
    color: #e1e1e3;
    padding: 1.2rem 3rem;
    border-radius: 4px;
    text-decoration: none;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    box-shadow: 0 4px 15px rgba(127, 180, 239, 0.3);
}

.cta-button:hover {
    background: transparent;
    border-color: #7FB4EF;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(127, 180, 239, 0.4);
}

/* Vision Section */
.vision {
    padding: 8rem 5%;
    background: #070f12;
    position: relative;
    text-align: center;
}

.vision-content {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
}

.vision h2 {
    font-size: 2.5rem;
    color: #e1e1e3;
    margin-bottom: 2rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    position: relative;
}

.vision h2::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, #7FB4EF, #6980DF);
    margin: 1rem auto;
}

.vision-statement {
    font-size: 1.5rem;
    line-height: 1.6;
    color: #e1e1e3;
    font-weight: 300;
    letter-spacing: 0.5px;
}

/* Values Section */
.values {
    padding: 8rem 5%;
    position: relative;
    background-color: #070f12;
}

.values::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom,
                rgba(7, 15, 18, 1),
                rgba(7, 15, 18, 0.75) 15%,
                rgba(7, 15, 18, 0.75) 85%,
                rgba(7, 15, 18, 1)),
                url('https://images.unsplash.com/photo-1600607687939-ce8a6c25118c?auto=format&fit=crop&q=80') center/cover;
    z-index: 0;
}

.values::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 150px;
    background: linear-gradient(to top, #070f12, transparent);
    z-index: 1;
}

.values-grid {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 3rem;
    max-width: 1200px;
    margin: 0 auto;
}

.value-item {
    background: rgba(127, 180, 239, 0.05);
    border: 1px solid rgba(127, 180, 239, 0.1);
    border-radius: 8px;
    padding: 2.5rem;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.value-item:hover {
    transform: translateY(-5px);
    background: rgba(127, 180, 239, 0.08);
    border-color: rgba(127, 180, 239, 0.2);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.value-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, #7FB4EF, #6980DF);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 2rem;
}

.value-icon i {
    font-size: 2rem;
    color: #e1e1e3;
}

.value-item h3 {
    color: #e1e1e3;
    font-size: 1.5rem;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.value-item p {
    color: #e1e1e3;
    opacity: 0.9;
    line-height: 1.8;
    font-size: 1.1rem;
}

/* Contact Section */
.contact {
    padding: 8rem 5%;
    background: #070f12;
    position: relative;
}

.contact h2 {
    text-align: center;
    margin-bottom: 4rem;
    color: #e1e1e3;
    font-size: 2.5rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    position: relative;
}

.contact h2::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, #7FB4EF, #6980DF);
    margin: 1rem auto;
}

.contact-container {
    max-width: 600px;
    margin: 0 auto;
    background: rgba(127, 180, 239, 0.05);
    padding: 3rem;
    border-radius: 4px;
    border: 1px solid rgba(127, 180, 239, 0.1);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

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

label {
    display: block;
    margin-bottom: 0.8rem;
    color: #e1e1e3;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 0.9rem;
}

input,
textarea {
    width: 100%;
    padding: 1rem;
    border: 1px solid rgba(127, 180, 239, 0.3);
    border-radius: 4px;
    font-size: 1rem;
    transition: all 0.3s ease;
    background: rgba(7, 15, 18, 0.5);
    color: #e1e1e3;
}

input:focus,
textarea:focus {
    outline: none;
    border-color: #7FB4EF;
    box-shadow: 0 0 0 2px rgba(127, 180, 239, 0.2);
}

textarea {
    height: 150px;
    resize: vertical;
}

button {
    background: linear-gradient(135deg, #7FB4EF, #6980DF);
    color: #e1e1e3;
    padding: 1.2rem 2.5rem;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: all 0.3s ease;
    width: 100%;
    box-shadow: 0 4px 15px rgba(127, 180, 239, 0.3);
}

button:hover {
    background: transparent;
    border: 2px solid #7FB4EF;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(127, 180, 239, 0.4);
}

/* Footer */
footer {
    background: #070f12;
    color: #e1e1e3;
    padding: 3rem 5%;
    text-align: center;
    border-top: 1px solid rgba(127, 180, 239, 0.2);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
}

.contact-info {
    margin-bottom: 2rem;
}

.contact-info p {
    margin: 0.8rem 0;
    font-size: 1.1rem;
}

.contact-info i {
    margin-right: 0.8rem;
    color: #7FB4EF;
}

.contact-info a {
    color: #e1e1e3;
    text-decoration: none;
    transition: color 0.3s ease;
}

.contact-info a:hover {
    color: #7FB4EF;
}

footer p:last-child {
    font-size: 0.9rem;
    opacity: 0.8;
}

/* Responsive Design */
@media (max-width: 992px) {
    .values-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .value-item {
        padding: 2rem;
    }
    .logo img {
        height: 75px;
        margin: -0.5rem 0;
    }
}

@media (max-width: 768px) {
    nav {
        flex-direction: column;
        align-items: flex-start;
        padding: 0 2%;
    }
    .logo img {
        height: 60px;
    }
    .nav-links {
        flex-direction: column;
        gap: 1.5rem;
        width: 100%;
        align-items: flex-start;
        margin-left: 0;
    }

    .hamburger {
        display: block;
    }

    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 100%;
        height: 100vh;
        background: rgba(7, 15, 18, 0.98);
        backdrop-filter: blur(10px);
        -webkit-backdrop-filter: blur(10px);
        flex-direction: column;
        justify-content: center;
        gap: 2rem;
        margin: 0;
        transition: right 0.3s ease;
        z-index: 1000;
    }

    .nav-links.active {
        right: 0;
    }

    .hamburger.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

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

    .hamburger.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }

    .nav-links li a {
        font-size: 1.2rem;
        padding: 1rem 0;
    }

    .hero h1 {
        font-size: 2.5rem;
    }

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

    .hero-features {
        gap: 1rem;
    }

    .feature {
        padding: 0.6rem 1.2rem;
    }

    .feature i {
        font-size: 1rem;
    }

    .feature span {
        font-size: 0.9rem;
    }

    .vision-statement {
        font-size: 1.2rem;
    }

    .values {
        padding: 4rem 5%;
    }
    
    .value-icon {
        width: 60px;
        height: 60px;
    }
    
    .value-icon i {
        font-size: 1.5rem;
    }
    
    .value-item h3 {
        font-size: 1.3rem;
    }
    
    .value-item p {
        font-size: 1rem;
    }

    .contact-container {
        padding: 2rem;
    }

    .project-image {
        padding-top: 75%; /* 4:3 aspect ratio for mobile */
    }

    .cta-button {
        padding: 1rem 2.5rem;
    }
}

/* Contact Form Message */
.form-message {
    margin-top: 1rem;
    padding: 1rem;
    border-radius: 4px;
    text-align: center;
    font-weight: 500;
    display: none;
}

.form-message.success {
    display: block;
    background: rgba(46, 213, 115, 0.1);
    border: 1px solid rgba(46, 213, 115, 0.2);
    color: #2ed573;
}

.form-message.error {
    display: block;
    background: rgba(255, 71, 87, 0.1);
    border: 1px solid rgba(255, 71, 87, 0.2);
    color: #ff4757;
}

/* reCAPTCHA */
.g-recaptcha {
    margin: 1rem 0;
    display: flex;
    justify-content: center;
}

/* Form Button States */
button:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

/* Services Section */
.services {
    padding: 8rem 5%;
    background: #070f12;
    position: relative;
}

.services h2 {
    text-align: center;
    margin-bottom: 4rem;
    color: #e1e1e3;
    font-size: 2.5rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    position: relative;
}

.services h2::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, #7FB4EF, #6980DF);
    margin: 1rem auto;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.service-item {
    background: rgba(127, 180, 239, 0.05);
    border: 1px solid rgba(127, 180, 239, 0.1);
    border-radius: 8px;
    padding: 2rem;
    text-align: center;
    transition: all 0.3s ease;
}

.service-item:hover {
    transform: translateY(-5px);
    background: rgba(127, 180, 239, 0.08);
    border-color: rgba(127, 180, 239, 0.2);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.service-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #7FB4EF, #6980DF);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.service-icon i {
    font-size: 2rem;
    color: #e1e1e3;
}

.service-item h3 {
    color: #e1e1e3;
    font-size: 1.5rem;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.service-item p {
    color: #e1e1e3;
    opacity: 0.9;
    line-height: 1.6;
}

/* Projects Section */
.projects {
    padding: 8rem 5%;
    background: #070f12;
    position: relative;
}

.projects h2 {
    text-align: center;
    margin-bottom: 4rem;
    color: #e1e1e3;
    font-size: 2.5rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    position: relative;
}

.projects h2::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, #7FB4EF, #6980DF);
    margin: 1rem auto;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.project-item {
    position: relative;
    border-radius: 8px;
    overflow: hidden;
    background: rgba(127, 180, 239, 0.05);
    border: 1px solid rgba(127, 180, 239, 0.1);
    transition: all 0.3s ease;
}

.project-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.project-image {
    position: relative;
    padding-top: 66.67%; /* 3:2 aspect ratio */
    overflow: hidden;
    background: rgba(7, 15, 18, 0.5);
}

.project-image img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.project-item:hover .project-image img {
    transform: scale(1.08);
}

.project-info {
    padding: 1.5rem;
    background: rgba(7, 15, 18, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.project-info h3 {
    color: #e1e1e3;
    font-size: 1.3rem;
    margin-bottom: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.project-info p {
    color: #e1e1e3;
    opacity: 0.9;
    font-size: 0.95rem;
    line-height: 1.6;
}

/* Process Section */
.process {
    padding: 8rem 5%;
    background: #070f12;
    position: relative;
}

.process h2 {
    text-align: center;
    margin-bottom: 4rem;
    color: #e1e1e3;
    font-size: 2.5rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    position: relative;
}

.process h2::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, #7FB4EF, #6980DF);
    margin: 1rem auto;
}

.process-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.step {
    text-align: center;
    padding: 2rem;
    background: rgba(127, 180, 239, 0.05);
    border: 1px solid rgba(127, 180, 239, 0.1);
    border-radius: 8px;
    position: relative;
    transition: all 0.3s ease;
}

.step:hover {
    transform: translateY(-5px);
    background: rgba(127, 180, 239, 0.08);
    border-color: rgba(127, 180, 239, 0.2);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.step-number {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #7FB4EF, #6980DF);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    font-size: 1.5rem;
    font-weight: bold;
    color: #e1e1e3;
}

.step h3 {
    color: #e1e1e3;
    font-size: 1.3rem;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.step p {
    color: #e1e1e3;
    opacity: 0.9;
    line-height: 1.6;
}

/* Testimonials Section */
.testimonials {
    padding: 8rem 5%;
    background: #070f12;
    position: relative;
}

.testimonials h2 {
    text-align: center;
    margin-bottom: 4rem;
    color: #e1e1e3;
    font-size: 2.5rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    position: relative;
}

.testimonials h2::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, #7FB4EF, #6980DF);
    margin: 1rem auto;
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.testimonial-item {
    background: rgba(127, 180, 239, 0.05);
    border: 1px solid rgba(127, 180, 239, 0.1);
    border-radius: 8px;
    padding: 2rem;
    transition: all 0.3s ease;
}

.testimonial-item:hover {
    transform: translateY(-5px);
    background: rgba(127, 180, 239, 0.08);
    border-color: rgba(127, 180, 239, 0.2);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.testimonial-content {
    margin-bottom: 1.5rem;
}

.testimonial-content p {
    color: #e1e1e3;
    font-size: 1.1rem;
    line-height: 1.6;
    font-style: italic;
}

.testimonial-author h4 {
    color: #e1e1e3;
    font-size: 1.1rem;
    margin-bottom: 0.3rem;
}

.testimonial-author p {
    color: #e1e1e3;
    opacity: 0.8;
    font-size: 0.9rem;
}

/* Responsive Design Updates */
@media (max-width: 768px) {
    .services-grid,
    .projects-grid,
    .process-steps,
    .testimonials-grid {
        grid-template-columns: 1fr;
    }

    .service-item,
    .project-item,
    .step,
    .testimonial-item {
        padding: 1.5rem;
    }

    .service-icon,
    .step-number {
        width: 60px;
        height: 60px;
    }

    .service-icon i {
        font-size: 1.5rem;
    }

    .project-image {
        padding-top: 75%; /* 4:3 aspect ratio for mobile */
    }
}