/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #8B5CF6;
    --secondary-color: #1E1B4B;
    --accent-color: #06B6D4;
    --light-color: #FAFAFA;
    --dark-color: #0F0A1E;
    --highlight-color: #EC4899;
    --font-display: 'Playfair Display', serif;
    --font-body: 'Space Grotesk', sans-serif;
    --border-radius: 20px;
    --transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:wght@400;700;900&family=Space+Grotesk:wght@300;400;500;600;700&display=swap');

body {
    font-family: var(--font-body);
    line-height: 1.6;
    color: var(--light-color);
    background-color: var(--dark-color);
    overflow-x: hidden;
}

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

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: rgba(15, 10, 30, 0.9);
    backdrop-filter: blur(20px);
    z-index: 1000;
    padding: 20px 0;
    transition: var(--transition);
}

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

.navbar-brand {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logo-icon {
    width: 40px;
    height: 40px;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.logo-square {
    width: 30px;
    height: 30px;
    border: 2px solid var(--accent-color);
    transform: rotate(45deg);
    position: relative;
}

.logo-circle {
    position: absolute;
    width: 15px;
    height: 15px;
    background: var(--primary-color);
    border-radius: 50%;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    box-shadow: 0 0 15px rgba(139, 92, 246, 0.6);
}

.navbar-brand h1 {
    font-family: var(--font-display);
    font-size: 32px;
    font-weight: 900;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -1px;
}

.navbar-menu ul {
    display: flex;
    list-style: none;
    gap: 40px;
}

.navbar-menu a {
    text-decoration: none;
    color: var(--light-color);
    font-weight: 500;
    font-size: 16px;
    position: relative;
    transition: var(--transition);
}

.navbar-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    transition: var(--transition);
}

.navbar-menu a:hover::after {
    width: 100%;
}

.navbar-menu a:hover {
    color: var(--accent-color);
}

/* 语言选择器 */
.language-selector {
    position: relative;
    margin-left: 30px;
}

.language-toggle {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    padding: 8px 12px;
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.1);
    transition: var(--transition);
}

.language-toggle:hover {
    background: rgba(255, 255, 255, 0.15);
}

.language-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 10px;
    background: var(--dark-color);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    padding: 10px;
    min-width: 150px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: var(--transition);
    z-index: 1001;
}

.language-selector:hover .language-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.language-dropdown a {
    display: block;
    padding: 8px 12px;
    border-radius: 8px;
    transition: var(--transition);
    margin-bottom: 5px;
}

.language-dropdown a:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--accent-color);
}

.language-dropdown a:last-child {
    margin-bottom: 0;
}

.navbar-toggle {
    display: none;
    cursor: pointer;
    z-index: 1001;
}

.navbar-toggle span {
    display: block;
    width: 30px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    margin: 6px 0;
    transition: var(--transition);
}

/* Hero 区域 */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    padding-top: 80px;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.15) 0%, transparent 70%);
    animation: rotate 30s linear infinite;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 80px;
    position: relative;
    z-index: 1;
}

.hero-content {
    animation: fadeInUp 1s ease;
}

.hero-logo {
    margin-bottom: 30px;
    animation: fadeInUp 1s ease 0.2s both;
}

.logo-icon.large {
    width: 80px;
    height: 80px;
}

.logo-icon.large .logo-square {
    width: 60px;
    height: 60px;
    border-width: 3px;
}

.logo-icon.large .logo-circle {
    width: 30px;
    height: 30px;
    box-shadow: 0 0 30px rgba(139, 92, 246, 0.8);
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-content h1 {
    font-family: var(--font-display);
    font-size: 72px;
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: 30px;
    background: linear-gradient(135deg, var(--light-color) 0%, var(--accent-color) 50%, var(--primary-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -2px;
}

.hero-content p {
    font-size: 20px;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 40px;
    line-height: 1.8;
}

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

.btn-primary {
    display: inline-block;
    padding: 18px 40px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
    color: var(--light-color);
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    font-size: 16px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    box-shadow: 0 10px 40px rgba(139, 92, 246, 0.3);
}

.btn-primary::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: 0.5s;
}

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

.btn-primary:hover {
    transform: translateY(-5px) scale(1.02);
    box-shadow: 0 20px 60px rgba(139, 92, 246, 0.4);
}

.btn-secondary {
    display: inline-block;
    padding: 18px 40px;
    background-color: transparent;
    color: var(--light-color);
    border: 2px solid var(--accent-color);
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    font-size: 16px;
    transition: var(--transition);
}

.btn-secondary:hover {
    background-color: var(--accent-color);
    transform: translateY(-5px);
    box-shadow: 0 10px 40px rgba(6, 182, 212, 0.3);
}

.hero-image {
    position: relative;
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-30px); }
}

.hero-image img {
    width: 100%;
    border-radius: var(--border-radius);
    box-shadow: 0 30px 80px rgba(139, 92, 246, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

/* 核心优势 */
.advantages {
    padding: 150px 0;
    background: linear-gradient(180deg, var(--dark-color) 0%, var(--secondary-color) 100%);
}

.advantages h2 {
    font-family: var(--font-display);
    font-size: 56px;
    font-weight: 900;
    text-align: center;
    margin-bottom: 100px;
    background: linear-gradient(135deg, var(--light-color) 0%, var(--accent-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -1px;
}

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

.advantage-item {
    position: relative;
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.1) 0%, rgba(6, 182, 212, 0.05) 100%);
    border-radius: var(--border-radius);
    border: 1px solid rgba(255, 255, 255, 0.1);
    overflow: hidden;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.advantage-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    transform: scaleX(0);
    transform-origin: left;
    transition: var(--transition);
    z-index: 2;
}

.advantage-item:hover::before {
    transform: scaleX(1);
}

.advantage-item:hover {
    transform: translateY(-15px);
    border-color: var(--primary-color);
    box-shadow: 0 30px 80px rgba(139, 92, 246, 0.2);
}

.advantage-image {
    width: 100%;
    height: 200px;
    overflow: hidden;
    position: relative;
}

.advantage-image::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 80px;
    background: linear-gradient(transparent, rgba(15, 10, 30, 0.9));
}

.advantage-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.advantage-item:hover .advantage-image img {
    transform: scale(1.1);
}

.advantage-content {
    padding: 30px 35px 40px;
}

.advantage-item h3 {
    font-family: var(--font-display);
    font-size: 26px;
    font-weight: 700;
    margin-bottom: 15px;
    color: var(--light-color);
    background: linear-gradient(135deg, var(--light-color) 0%, var(--accent-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.advantage-item p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 15px;
    line-height: 1.8;
    margin-bottom: 20px;
}

.advantage-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.advantage-list li {
    position: relative;
    padding-left: 25px;
    margin-bottom: 10px;
    color: rgba(255, 255, 255, 0.8);
    font-size: 14px;
    font-weight: 500;
}

.advantage-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--accent-color);
    font-weight: 700;
}

/* 关于我们 */
.about {
    padding: 150px 0;
    background: linear-gradient(180deg, var(--secondary-color) 0%, var(--dark-color) 100%);
}

.about .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 100px;
    align-items: center;
}

.about-content h2 {
    font-family: var(--font-display);
    font-size: 56px;
    font-weight: 900;
    margin-bottom: 30px;
    background: linear-gradient(135deg, var(--highlight-color) 0%, var(--primary-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -1px;
}

.about-content p {
    font-size: 18px;
    margin-bottom: 25px;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.9;
}

.about-image {
    position: relative;
}

.about-image::before {
    content: '';
    position: absolute;
    top: -20px;
    left: -20px;
    right: 20px;
    bottom: 20px;
    border: 3px solid var(--accent-color);
    border-radius: var(--border-radius);
    z-index: -1;
}

.about-image img {
    width: 100%;
    border-radius: var(--border-radius);
    box-shadow: 0 30px 80px rgba(0, 0, 0, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

/* 产品服务 */
.services {
    padding: 150px 0;
    background-color: var(--dark-color);
}

.services h2 {
    font-family: var(--font-display);
    font-size: 56px;
    font-weight: 900;
    text-align: center;
    margin-bottom: 20px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--highlight-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -1px;
}

.section-subtitle {
    text-align: center;
    color: rgba(255, 255, 255, 0.6);
    font-size: 18px;
    margin-bottom: 80px;
}

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

.service-item {
    position: relative;
    background: rgba(30, 27, 75, 0.5);
    border-radius: var(--border-radius);
    border: 1px solid rgba(255, 255, 255, 0.05);
    overflow: hidden;
    transition: var(--transition);
}

.service-item:hover {
    transform: translateY(-15px);
    box-shadow: 0 30px 80px rgba(139, 92, 246, 0.2);
    border-color: var(--primary-color);
}

.service-image {
    width: 100%;
    height: 200px;
    overflow: hidden;
    position: relative;
}

.service-image::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 80px;
    background: linear-gradient(transparent, rgba(15, 10, 30, 0.95));
}

.service-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.service-item:hover .service-image img {
    transform: scale(1.1);
}

.service-content {
    padding: 30px 35px 40px;
}

.service-content h3 {
    font-family: var(--font-display);
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 15px;
    color: var(--light-color);
    background: linear-gradient(135deg, var(--light-color) 0%, var(--accent-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.service-content p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 15px;
    line-height: 1.8;
    margin-bottom: 20px;
}

.service-features {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
}

.service-features li {
    position: relative;
    padding-left: 20px;
    color: rgba(255, 255, 255, 0.8);
    font-size: 14px;
    font-weight: 500;
}

.service-features li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--accent-color);
}

/* 案例展示 */
.cases {
    padding: 150px 0;
    background: linear-gradient(180deg, var(--dark-color) 0%, var(--secondary-color) 100%);
}

.cases h2 {
    font-family: var(--font-display);
    font-size: 56px;
    font-weight: 900;
    text-align: center;
    margin-bottom: 100px;
    background: linear-gradient(135deg, var(--accent-color) 0%, var(--primary-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -1px;
}

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

.case-item {
    position: relative;
    background: rgba(30, 27, 75, 0.5);
    border-radius: var(--border-radius);
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition);
}

.case-item:hover {
    transform: translateY(-15px);
    box-shadow: 0 30px 80px rgba(139, 92, 246, 0.2);
}

.case-item img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    transition: var(--transition);
}

.case-item:hover img {
    transform: scale(1.1);
}

.case-image-container {
    overflow: hidden;
}

.case-content {
    padding: 35px;
}

.case-content h3 {
    font-family: var(--font-display);
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 15px;
    color: var(--light-color);
}

.case-content p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 16px;
    line-height: 1.7;
}

/* 联系我们 */
.contact {
    padding: 150px 0;
    background-color: var(--dark-color);
}

.contact h2 {
    font-family: var(--font-display);
    font-size: 56px;
    font-weight: 900;
    text-align: center;
    margin-bottom: 100px;
    background: linear-gradient(135deg, var(--light-color) 0%, var(--accent-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -1px;
}

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

.contact-info {
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.1) 0%, rgba(6, 182, 212, 0.05) 100%);
    padding: 60px;
    border-radius: var(--border-radius);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.contact-info h3 {
    font-family: var(--font-display);
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 30px;
    color: var(--light-color);
}

.contact-info p {
    margin-bottom: 20px;
    color: rgba(255, 255, 255, 0.7);
    font-size: 18px;
    line-height: 1.8;
}

.contact-info strong {
    color: var(--accent-color);
}

.contact-form {
    background: rgba(30, 27, 75, 0.5);
    padding: 60px;
    border-radius: var(--border-radius);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.contact-form h3 {
    font-family: var(--font-display);
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 30px;
    color: var(--light-color);
}

.form-group {
    margin-bottom: 30px;
}

.form-group label {
    display: block;
    margin-bottom: 12px;
    font-weight: 500;
    color: var(--light-color);
    font-size: 16px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 18px 25px;
    border: 2px solid rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    font-family: var(--font-body);
    font-size: 16px;
    background-color: rgba(15, 10, 30, 0.5);
    color: var(--light-color);
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 4px rgba(6, 182, 212, 0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: rgba(255, 255, 255, 0.3);
}

/* 页脚 */
.footer {
    background: linear-gradient(180deg, var(--dark-color) 0%, #050510 100%);
    color: var(--light-color);
    padding: 100px 0 40px;
    position: relative;
}

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

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 80px;
    margin-bottom: 60px;
}

.footer-brand {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 15px;
}

.footer-brand .logo-icon {
    margin-bottom: 10px;
}

.footer-brand h2 {
    font-family: var(--font-display);
    font-size: 36px;
    font-weight: 900;
    margin-bottom: 20px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 18px;
    line-height: 1.8;
}

.footer-links h3,
.footer-contact h3 {
    font-family: var(--font-display);
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 30px;
    color: var(--light-color);
}

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

.footer-links li {
    margin-bottom: 15px;
}

.footer-links a {
    text-decoration: none;
    color: rgba(255, 255, 255, 0.6);
    transition: var(--transition);
    font-size: 16px;
    position: relative;
}

.footer-links a::before {
    content: '→';
    position: absolute;
    left: -20px;
    opacity: 0;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--accent-color);
    padding-left: 25px;
}

.footer-links a:hover::before {
    opacity: 1;
    left: 0;
}

.footer-contact p {
    margin-bottom: 15px;
    color: rgba(255, 255, 255, 0.6);
    font-size: 16px;
    line-height: 1.8;
}

.footer-bottom {
    text-align: center;
    padding-top: 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.4);
    font-size: 14px;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .hero .container,
    .about .container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-content,
    .about-content {
        padding-right: 0;
        margin-bottom: 60px;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .cases-grid,
    .news-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

@media (max-width: 768px) {
    .navbar-menu {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background-color: var(--dark-color);
        display: flex;
        align-items: center;
        justify-content: center;
        transform: translateX(100%);
        transition: var(--transition);
        z-index: 999;
    }
    
    .navbar-menu.active {
        transform: translateX(0);
    }
    
    .navbar-menu ul {
        flex-direction: column;
        gap: 30px;
        text-align: center;
    }
    
    .navbar-menu a {
        font-size: 24px;
    }
    
    .language-selector {
        margin-left: 0;
        margin-top: 20px;
    }
    
    .language-dropdown {
        right: auto;
        left: 50%;
        transform: translateX(-50%) translateY(-10px);
    }
    
    .language-selector:hover .language-dropdown {
        transform: translateX(-50%) translateY(0);
    }
    
    .navbar-toggle {
        display: block;
    }
    
    .hero-content h1 {
        font-size: 48px;
    }
    
    .advantages-grid,
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .service-features {
        grid-template-columns: 1fr;
    }
    
    .container {
        padding: 0 20px;
    }
    
    .advantages,
    .about,
    .services,
    .cases,
    .contact {
        padding: 80px 0;
    }
    
    .advantages h2,
    .about-content h2,
    .services h2,
    .cases h2,
    .contact h2 {
        font-size: 36px;
        margin-bottom: 50px;
    }
}

@media (max-width: 480px) {
    .hero-content h1 {
        font-size: 36px;
    }
    
    .hero-content p {
        font-size: 16px;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .btn-primary,
    .btn-secondary {
        width: 100%;
        text-align: center;
    }
}