/* 基础重置和变量 */
:root {
    --primary-color: #4f4f99;
    --secondary-color: #6c63ff;
    --accent-color: #00c9a7;
    --light-color: #f8f9fa;
    --dark-color: #212529;
    --gray-color: #6c757d;
    --light-gray: #e9ecef;
    --success-color: #28a745;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --transition: all 0.3s ease;
    --shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 8px 25px rgba(0, 0, 0, 0.15);
    --border-radius: 8px;
    --font-main: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
}

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

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

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow);
    z-index: 1000;
    transition: var(--transition);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.logo img {
    width: 40px;
    height: 40px;
}

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

.nav-menu a {
    text-decoration: none;
    color: var(--dark-color);
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.nav-menu a:hover {
    color: var(--primary-color);
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: var(--transition);
}

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

.language-switch {
    background: var(--primary-color);
    color: white !important;
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
}

.language-switch:hover {
    background: var(--secondary-color);
    color: white !important;
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.bar {
    width: 25px;
    height: 3px;
    background: var(--primary-color);
    margin: 3px 0;
    transition: 0.3s;
}

/* 横幅区域 */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.hero-content {
    text-align: center;
    color: white;
    z-index: 2;
    max-width: 800px;
    padding: 0 20px;
}

.hero h1 {
    font-size: 4rem;
    font-weight: 800;
    margin-bottom: 1rem;
    opacity: 0;
    transform: translateY(30px);
}

.tagline {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    opacity: 0;
    transform: translateY(30px);
}

.hero-subtitle {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0;
    transform: translateY(30px);
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    opacity: 0;
    transform: translateY(30px);
}

.btn {
    display: inline-block;
    padding: 1rem 2rem;
    border-radius: var(--border-radius);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

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

.btn.primary:hover {
    background: var(--light-gray);
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
}

.btn.secondary {
    background: transparent;
    color: white;
    border: 2px solid white;
}

.btn.secondary:hover {
    background: white;
    color: var(--primary-color);
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
}

.hero-animation {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 10% 20%, rgba(255,255,255,0.1) 1px, transparent 1px),
        radial-gradient(circle at 20% 80%, rgba(255,255,255,0.1) 1px, transparent 1px),
        radial-gradient(circle at 80% 30%, rgba(255,255,255,0.1) 1px, transparent 1px),
        radial-gradient(circle at 60% 70%, rgba(255,255,255,0.1) 1px, transparent 1px);
    background-size: 100px 100px;
    animation: moveParticles 20s linear infinite;
}

@keyframes moveParticles {
    0% { transform: translateY(0); }
    100% { transform: translateY(-100px); }
}

.grid-lines {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(255,255,255,0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.05) 1px, transparent 1px);
    background-size: 50px 50px;
}

.floating-elements {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.floating-box {
    position: absolute;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--border-radius);
    padding: 1rem;
    color: white;
    font-weight: 500;
    animation: float 15s infinite ease-in-out;
}

.floating-box:nth-child(1) {
    top: 20%;
    left: 10%;
    animation-delay: 0s;
}

.floating-box:nth-child(2) {
    top: 40%;
    right: 15%;
    animation-delay: 2s;
}

.floating-box:nth-child(3) {
    bottom: 30%;
    left: 20%;
    animation-delay: 4s;
}

.floating-box:nth-child(4) {
    bottom: 20%;
    right: 10%;
    animation-delay: 6s;
}

.floating-box:nth-child(5) {
    top: 30%;
    left: 25%;
    animation-delay: 8s;
}

@keyframes float {
    0%, 100% { transform: translateY(0) translateX(0); }
    25% { transform: translateY(-20px) translateX(10px); }
    50% { transform: translateY(10px) translateX(-15px); }
    75% { transform: translateY(-15px) translateX(5px); }
}

/* 动画类 */
.animate-slide-in {
    animation: slideIn 1s ease-out forwards;
}

.animate-fade-in {
    animation: fadeIn 1s ease-out 0.3s forwards;
}

.animate-bounce-in {
    animation: bounceIn 1s ease-out 0.6s forwards;
}

@keyframes slideIn {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes bounceIn {
    0% {
        opacity: 0;
        transform: translateY(30px);
    }
    50% {
        transform: translateY(-10px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 章节样式 */
.section {
    padding: 5rem 0;
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-header h2 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.section-divider {
    width: 60px;
    height: 4px;
    background: var(--accent-color);
    margin: 0 auto 1rem;
    border-radius: 2px;
}

.section-header p {
    font-size: 1.2rem;
    color: var(--gray-color);
}

.bg-light {
    background: var(--light-color);
}

.bg-gradient {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.bg-gradient .section-header h2,
.bg-gradient .section-header p {
    color: white;
}

/* 关于我们 */
.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.about-text .highlight {
    font-size: 1.4rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    font-weight: 600;
}

.about-text p {
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.pain-points {
    list-style: none;
    padding: 0;
    margin: 15px 0;
}

.pain-points li {
    padding: 8px 0;
    border-bottom: 1px solid #eee;
}

.pain-points li:last-child {
    border-bottom: none;
}

.business-model {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin: 2rem 0;
}

.model-card {
    background: rgba(79, 79, 153, 0.05);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    text-align: center;
    transition: var(--transition);
}

.model-card:hover {
    transform: translateY(-5px);
    background: rgba(79, 79, 153, 0.1);
}

.model-icon {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.model-card h4 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.model-card p {
    font-size: 14px;
    color: #666;
    line-height: 1.4;
}

.tech-animation {
    position: relative;
    height: 400px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.circle {
    position: absolute;
    width: 200px;
    height: 200px;
    border: 2px solid var(--primary-color);
    border-radius: 50%;
    animation: pulse 3s infinite;
}

.circle.delayed {
    animation-delay: 1s;
    width: 150px;
    height: 150px;
}

.circle.delayed-2 {
    animation-delay: 2s;
    width: 100px;
    height: 100px;
}

@keyframes pulse {
    0% {
        transform: scale(0.8);
        opacity: 0.7;
    }
    50% {
        transform: scale(1.2);
        opacity: 0.3;
    }
    100% {
        transform: scale(0.8);
        opacity: 0.7;
    }
}

.success-indicator {
    position: absolute;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.indicator-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(255, 255, 255, 0.1);
    padding: 0.8rem 1.2rem;
    border-radius: var(--border-radius);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

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

/* 服务模式 */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.service-card {
    background: white;
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    transition: var(--transition);
    text-align: center;
}

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

.service-icon {
    margin-bottom: 1.5rem;
}

.service-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

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

.business-process {
    background: white;
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

.business-process h3 {
    text-align: center;
    font-size: 1.8rem;
    color: var(--primary-color);
    margin-bottom: 2rem;
}

.process-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
}

.step {
    text-align: center;
    padding: 1.5rem;
    border-radius: var(--border-radius);
    background: rgba(79, 79, 153, 0.05);
    transition: var(--transition);
}

.step:hover {
    background: rgba(79, 79, 153, 0.1);
    transform: translateY(-5px);
}

.step-number {
    width: 40px;
    height: 40px;
    background: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    margin: 0 auto 1rem;
}

.step h4 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

/* 核心优势 */
.advantages-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.advantage-item {
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
}

.advantage-icon {
    background: rgba(79, 79, 153, 0.1);
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.advantage-text h3 {
    margin-bottom: 0.5rem;
    color: var(--primary-color);
}

.advantage-text p {
    color: var(--gray-color);
}

/* 行业价值 */
.industries-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.industry-card {
    background: rgba(255, 255, 255, 0.1);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: var(--transition);
}

.industry-card:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.2);
}

.industry-card h3 {
    font-size: 1.3rem;
    margin-bottom: 0.8rem;
    color: white;
}

.industry-card p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.95rem;
}

/* 合作伙伴价值 */
.partners-value {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.value-item {
    position: relative;
    padding: 2rem 2rem 2rem 4rem;
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    transition: var(--transition);
}

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

.value-number {
    position: absolute;
    left: 1.5rem;
    top: 2rem;
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
    opacity: 0.1;
}

.value-item h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

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

/* 联系我们 */
.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}

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

.contact-item h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    color: var(--primary-color);
}

.contact-item p {
    margin-bottom: 0.3rem;
    color: var(--gray-color);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.contact-item .icon {
    color: var(--primary-color);
    font-weight: bold;
}

.contact-item .icon.location,
.contact-item .icon.phone {
    color: var(--primary-color);
}

.qr-code {
    width: 150px;
    height: 150px;
    background: var(--light-gray);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 1rem;
}

.qr-placeholder {
    color: var(--gray-color);
    font-size: 0.9rem;
    text-align: center;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    border: 1px solid #ddd;
    border-radius: var(--border-radius);
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(79, 79, 153, 0.1);
}

/* 页脚 */
.footer {
    background: var(--dark-color);
    color: white;
    padding: 3rem 0 1.5rem;
}

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

.footer-logo {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
}

.footer-logo img {
    width: 50px;
    height: 50px;
}

.footer-logo h3 {
    color: white;
    margin: 0;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: var(--transition);
}

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

.footer-info p {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 0.5rem;
}

.footer-info a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
}

.footer-info a:hover {
    color: white;
    text-decoration: underline;
}

/* 返回顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
    opacity: 0;
    visibility: hidden;
    z-index: 999;
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--secondary-color);
    transform: translateY(-3px);
}

/* 响应式设计 */
@media (max-width: 992px) {
    .hero h1 {
        font-size: 3rem;
    }
    
    .tagline {
        font-size: 1.2rem;
    }
    
    .about-content,
    .contact-content {
        grid-template-columns: 1fr;
    }
    
    .about-image {
        order: -1;
    }
    
    .tech-animation {
        height: 300px;
    }
    
    .circle {
        width: 150px;
        height: 150px;
    }
    
    .circle.delayed {
        width: 120px;
        height: 120px;
    }
    
    .circle.delayed-2 {
        width: 90px;
        height: 90px;
    }
    
    .business-model {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: white;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: var(--shadow);
        padding: 2rem 0;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-menu li {
        margin: 1rem 0;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .section {
        padding: 3rem 0;
    }
    
    .section-header h2 {
        font-size: 2rem;
    }
    
    .service-card,
    .value-item {
        padding: 1.5rem;
    }
    
    .process-steps {
        grid-template-columns: 1fr;
    }
    
    .back-to-top {
        bottom: 1rem;
        right: 1rem;
        width: 40px;
        height: 40px;
    }
    
    .business-model {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 576px) {
    .nav-container {
        padding: 1rem;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .tagline {
        font-size: 1rem;
    }
    
    .hero-subtitle {
        font-size: 0.9rem;
    }
    
    .section-header h2 {
        font-size: 1.8rem;
    }
    
    .floating-box {
        font-size: 0.8rem;
        padding: 0.5rem;
    }
    
    .industries-grid {
        grid-template-columns: 1fr;
    }
}