/* 全局变量 */
:root {
    --primary: #1a73e8;
    --primary-dark: #0d47a1;
    --secondary: #7c4dff;
    --accent: #00c9ff;
    --dark: #121212;
    --dark-blue: #0a192f;
    --gray: #6c757d;
    --light-gray: #f8f9fa;
    --white: #ffffff;
    --gradient-1: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    --gradient-2: linear-gradient(135deg, var(--accent) 0%, var(--secondary) 100%);
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 5px 15px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
    --border-radius: 8px;
    --font-primary: 'Helvetica Neue', Arial, sans-serif;
}

/* 基本重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

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

/* 背景效果 */
#particles-js {
    position: fixed;
    width: 100%;
    height: 100%;
    z-index: -2;
    background-color: var(--dark-blue);
}

.noise-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    pointer-events: none;
    opacity: 0.03;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 260 260' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='1'/%3E%3C/svg%3E");
}

/* 容器 */
.container {
    width: 90%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 链接样式 */
a {
    text-decoration: none;
    color: var(--primary);
    transition: var(--transition);
}

a:hover {
    color: var(--secondary);
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: 30px;
    font-weight: 600;
    letter-spacing: 0.5px;
    text-align: center;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    font-size: 1rem;
}

.btn-primary {
    background: var(--gradient-1);
    color: var(--white);
    box-shadow: 0 4px 15px rgba(26, 115, 232, 0.3);
}

.btn-primary:hover {
    box-shadow: 0 6px 20px rgba(26, 115, 232, 0.4);
    transform: translateY(-2px);
    color: var(--white);
}

.btn-outline {
    background: transparent;
    color: var(--white);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--white);
    color: var(--white);
    transform: translateY(-2px);
}

/* 文本渐变效果 */
.gradient-text {
    background: var(--gradient-2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: inline-block;
}

/* 头部导航 */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 20px 0;
    transition: var(--transition);
    background: rgba(10, 25, 47, 0.8);
    backdrop-filter: blur(10px);
}

header.scrolled {
    padding: 12px 0;
    background: rgba(10, 25, 47, 0.95);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

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

.logo {
    color: var(--white);
    font-weight: 700;
    font-size: 1.2rem;
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.logo h1 {
    font-size: 1.8rem;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin: 0;
}

.logo p {
    font-size: 0.9rem;
    color: var(--accent);
}

nav ul {
    display: flex;
    list-style: none;
}

nav ul li {
    margin-left: 30px;
}

nav ul li a {
    color: var(--white);
    font-weight: 500;
    position: relative;
    padding-bottom: 5px;
}

nav ul li a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-1);
    transition: var(--transition);
}

nav ul li a:hover {
    color: var(--accent);
}

nav ul li a:hover::after {
    width: 100%;
}

.menu-toggle {
    display: none;
    font-size: 1.5rem;
    color: var(--white);
    cursor: pointer;
}

/* 英雄区块 */
.hero {
    position: relative;
    padding: 180px 0 100px;
    min-height: 100vh;
    display: flex;
    align-items: center;
    color: var(--white);
    overflow: hidden;
}

.hero .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: relative;
    z-index: 1;
}

.hero-content {
    flex: 1;
    max-width: 600px;
}

.hero-content h1 {
    font-size: 4rem;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    font-weight: 700;
}

.hero-content p {
    font-size: 1.25rem;
    margin-bottom: 2.5rem;
    color: rgba(255, 255, 255, 0.85);
}

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

.hero-visual {
    flex: 1;
    padding-left: 40px;
    display: flex;
    justify-content: center;
}

.chart-container {
    position: relative;
    width: 100%;
    height: 400px;
    max-width: 500px;
    overflow: hidden;
    border-radius: 5px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.chart-animation {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(180deg, 
        rgba(26, 115, 232, 0.05) 0%, 
        rgba(26, 115, 232, 0.2) 100%);
    overflow: hidden;
}

.chart-animation::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 30%;
    background: linear-gradient(180deg, 
        rgba(0, 201, 255, 0) 0%, 
        rgba(0, 201, 255, 0.3) 100%);
    z-index: 1;
}

.chart-animation::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: linear-gradient(90deg, 
        transparent 0%, 
        transparent 70%, 
        rgba(0, 201, 255, 0.2) 71%, 
        transparent 100%),
        linear-gradient(0deg, 
        transparent 0%, 
        transparent 70%, 
        rgba(0, 201, 255, 0.1) 71%, 
        transparent 100%);
    background-size: 30px 30px;
    z-index: 2;
}

/* 滚动指示器 */
.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    color: var(--white);
    opacity: 0.7;
    transition: var(--transition);
}

.scroll-indicator:hover {
    opacity: 1;
}

.mouse {
    width: 30px;
    height: 50px;
    border: 2px solid var(--white);
    border-radius: 20px;
    position: relative;
    margin-bottom: 10px;
}

.wheel {
    width: 6px;
    height: 6px;
    background: var(--white);
    border-radius: 50%;
    position: absolute;
    top: 10px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll 2s infinite;
}

@keyframes scroll {
    0% {
        opacity: 1;
        top: 10px;
    }
    100% {
        opacity: 0;
        top: 30px;
    }
}

/* 章节样式 */
section {
    padding: 100px 0;
    position: relative;
}

section:nth-child(odd) {
    background: rgba(255, 255, 255, 0.02);
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    font-size: 2.5rem;
    color: var(--white);
    margin-bottom: 20px;
    position: relative;
    display: inline-block;
}

.line {
    width: 60px;
    height: 3px;
    background: var(--gradient-1);
    margin: 0 auto;
    border-radius: 3px;
}

/* 关于我们部分 */
.about-content {
    display: flex;
    gap: 60px;
    align-items: center;
    color: var(--white);
}

.about-text {
    flex: 1;
}

.about-text p {
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.8);
}

.about-stats {
    flex: 1;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.stat-item {
    text-align: center;
    padding: 25px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: var(--border-radius);
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition);
}

.stat-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
    background: rgba(255, 255, 255, 0.05);
}

.stat-item h3 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 5px;
    background: var(--gradient-2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-item p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 1rem;
}

/* 服务部分 */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.service-card {
    background: rgba(255, 255, 255, 0.03);
    border-radius: var(--border-radius);
    padding: 30px;
    transition: var(--transition);
    border: 1px solid rgba(255, 255, 255, 0.05);
    color: var(--white);
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.1);
}

.icon-container {
    margin-bottom: 20px;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-1);
    font-size: 1.8rem;
    color: var(--white);
}

.service-card h3 {
    margin-bottom: 15px;
    font-size: 1.4rem;
}

.service-card p {
    color: rgba(255, 255, 255, 0.7);
}

/* 技术部分 */
.tech-content {
    display: flex;
    align-items: center;
    gap: 60px;
    color: var(--white);
}

.tech-visual {
    flex: 1;
    display: flex;
    justify-content: center;
}

.tech-animation {
    width: 400px;
    height: 400px;
    position: relative;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.nodes {
    position: absolute;
    width: 100%;
    height: 100%;
    animation: rotate 20s linear infinite;
    background-image: radial-gradient(circle, rgba(26, 115, 232, 0.3) 8px, transparent 8px),
                      radial-gradient(circle, rgba(124, 77, 255, 0.3) 10px, transparent 10px),
                      radial-gradient(circle, rgba(0, 201, 255, 0.3) 6px, transparent 6px);
    background-size: 120px 120px, 170px 170px, 200px 200px;
    background-position: 0 0, 0 0, 0 0;
}

@keyframes rotate {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.tech-features {
    flex: 1;
}

.tech-feature {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    margin-bottom: 30px;
}

.feature-icon {
    min-width: 50px;
    height: 50px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.05);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--accent);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.feature-content h3 {
    margin-bottom: 10px;
    font-size: 1.3rem;
}

.feature-content p {
    color: rgba(255, 255, 255, 0.7);
}

/* 联系部分 */
.contact-container {
    display: flex;
    gap: 50px;
    color: var(--white);
}

.contact-info, .contact-form {
    flex: 1;
}

.info-item {
    display: flex;
    gap: 20px;
    margin-bottom: 30px;
}

.info-item i {
    font-size: 1.8rem;
    color: var(--accent);
}

.info-item h3 {
    margin-bottom: 5px;
    font-size: 1.2rem;
}

.info-item p {
    color: rgba(255, 255, 255, 0.7);
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
}

.form-group input, .form-group textarea {
    width: 100%;
    padding: 12px 15px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius);
    color: var(--white);
    font-family: var(--font-primary);
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus, .form-group textarea:focus {
    outline: none;
    border-color: var(--accent);
    background: rgba(255, 255, 255, 0.08);
}

/* 页脚 */
footer {
    background: rgba(10, 25, 47, 0.95);
    color: var(--white);
    padding: 70px 0 20px;
    position: relative;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    margin-bottom: 50px;
    gap: 30px;
}

.footer-logo {
    flex: 1;
}

.footer-logo h2 {
    font-size: 1.8rem;
    margin-bottom: 0;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-logo p {
    color: var(--accent);
    font-size: 0.9rem;
    margin-bottom: 20px;
}

.footer-links {
    flex: 2;
    display: flex;
    justify-content: space-between;
}

.link-group h3 {
    margin-bottom: 20px;
    font-size: 1.2rem;
    color: var(--white);
    position: relative;
    padding-bottom: 10px;
    display: inline-block;
}

.link-group h3:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 30px;
    height: 2px;
    background: var(--accent);
}

.link-group ul {
    list-style: none;
}

.link-group ul li {
    margin-bottom: 10px;
}

.link-group ul li a {
    color: rgba(255, 255, 255, 0.7);
    transition: var(--transition);
}

.link-group ul li a:hover {
    color: var(--accent);
    padding-left: 5px;
}

.footer-bottom {
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
}

.social-icons {
    display: flex;
    gap: 20px;
}

.social-icons a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.05);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: var(--white);
    transition: var(--transition);
}

.social-icons a:hover {
    background: var(--primary);
    transform: translateY(-3px);
}

/* 响应式设计 */
@media (max-width: 1024px) {
    html {
        font-size: 15px;
    }
    
    .hero-content h1 {
        font-size: 3.5rem;
    }
    
    .about-content, .tech-content, .contact-container {
        flex-direction: column;
    }
    
    .about-stats {
        margin-top: 40px;
    }
    
    .tech-visual {
        margin-bottom: 40px;
    }
    
    .contact-info {
        margin-bottom: 40px;
    }
}

@media (max-width: 768px) {
    html {
        font-size: 14px;
    }
    
    .hero .container {
        flex-direction: column;
    }
    
    .hero-content {
        text-align: center;
        margin-bottom: 50px;
    }
    
    .hero-content h1 {
        font-size: 3rem;
    }
    
    .cta-buttons {
        justify-content: center;
    }
    
    .hero-visual {
        padding-left: 0;
    }
    
    nav {
        position: fixed;
        top: 0;
        right: -300px;
        width: 300px;
        height: 100vh;
        background: var(--dark-blue);
        padding: 80px 30px;
        transition: var(--transition);
        z-index: 999;
    }
    
    nav.active {
        right: 0;
        box-shadow: 0 0 20px rgba(0, 0, 0, 0.3);
    }
    
    nav ul {
        flex-direction: column;
    }
    
    nav ul li {
        margin-left: 0;
        margin-bottom: 20px;
    }
    
    .menu-toggle {
        display: block;
        z-index: 1000;
    }
    
    .menu-toggle.active i:before {
        content: "\f00d";
    }
    
    .footer-content {
        flex-direction: column;
    }
    
    .footer-links {
        flex-direction: column;
        gap: 30px;
    }
}

@media (max-width: 480px) {
    .hero-content h1 {
        font-size: 2.5rem;
    }
    
    .section-header h2 {
        font-size: 2rem;
    }
    
    .about-stats {
        grid-template-columns: 1fr;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 20px;
    }
}