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

body {
    font-family: 'Montserrat', sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
}

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

/* 3D背景容器 */
#background-3d {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    opacity: 0.3;
}

/* 加载动画 */
.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #000000 0%, #0a0a1a 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 999999;
    transition: opacity 1s ease;
}

.loading-content {
    text-align: center;
    max-width: 400px;
    width: 100%;
    padding: 0 20px;
}

.loading-logo h1 {
    font-size: 3rem;
    font-weight: 900;
    background: linear-gradient(45deg, #00d4ff, #764ba2, #f093fb);
    background-size: 300% 300%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 40px;
    animation: loadingLogoGlow 2s ease-in-out infinite;
    font-family: 'Inter', sans-serif;
}

@keyframes loadingLogoGlow {
    0%, 100% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
}

.loading-progress {
    width: 100%;
    height: 4px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 2px;
    overflow: hidden;
    position: relative;
}

.loading-bar {
    width: 0;
    height: 100%;
    background: linear-gradient(90deg, #00d4ff, #764ba2, #f093fb);
    background-size: 200% 100%;
    border-radius: 2px;
    animation: loadingBar 2s ease-in-out infinite, loadingProgress 3s ease-out forwards;
}

@keyframes loadingBar {
    0%, 100% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
}

@keyframes loadingProgress {
    0% {
        width: 0%;
    }
    100% {
        width: 100%;
    }
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(20px);
    z-index: 1000;
    transition: all 0.3s cubic-bezier(0.19, 1, 0.22, 1);
    border-bottom: 1px solid rgba(0, 212, 255, 0.1);
    font-family: 'Inter', sans-serif;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 30px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 15px;
    transition: all 0.3s ease;
}

.logo h1 {
    color: #00d4ff;
    font-size: 1.8rem;
    font-weight: 800;
    margin: 0;
    background: linear-gradient(45deg, #00d4ff, #764ba2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-family: 'Inter', sans-serif;
}

.logo p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 3px;
    font-weight: 600;
    margin: 0;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 40px;
    margin: 0;
    padding: 0;
}

.nav-links a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    transition: all 0.3s cubic-bezier(0.19, 1, 0.22, 1);
    position: relative;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    font-family: 'Inter', sans-serif;
}

.nav-links a::before {
    content: '';
    position: absolute;
    top: 100%;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, #00d4ff, #764ba2);
    transition: width 0.3s cubic-bezier(0.19, 1, 0.22, 1);
    border-radius: 1px;
}

.nav-links a:hover {
    color: #00d4ff;
    transform: translateY(-2px);
}

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

.menu-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 5px;
    padding: 10px;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.05);
    transition: all 0.3s ease;
}

.menu-toggle:hover {
    background: rgba(255, 255, 255, 0.1);
}

.menu-toggle span {
    width: 28px;
    height: 3px;
    background: linear-gradient(90deg, #00d4ff, #764ba2);
    border-radius: 1.5px;
    transition: all 0.3s cubic-bezier(0.19, 1, 0.22, 1);
}

.menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(7px, 7px);
}

.menu-toggle.active span:nth-child(2) {
    opacity: 0;
    transform: scale(0.5);
}

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

/* 英雄区域 */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: #fff;
    position: relative;
    overflow: hidden;
    background: transparent;
    font-family: 'Inter', sans-serif;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
}

.background-gradient {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #000000 0%, #0a0a1a 50%, #1a1a2e 100%);
    z-index: -1;
}

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

.glow-lines {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000"><defs><linearGradient id="glow" x1="0%" y1="0%" x2="100%" y2="100%"><stop offset="0%" style="stop-color:%2300d4ff;stop-opacity:0.3"/><stop offset="100%" style="stop-color:%23764ba2;stop-opacity:0"/></linearGradient></defs><path d="M0 200 Q 250 100 500 300 T 1000 400" stroke="url(%23glow)" stroke-width="2" fill="none" stroke-dasharray="20,30" opacity="0.6"/><path d="M0 800 Q 300 900 500 700 T 1000 600" stroke="url(%23glow)" stroke-width="2" fill="none" stroke-dasharray="15,25" opacity="0.5"/></svg>');
    animation: lineFloat 25s ease-in-out infinite;
    z-index: 2;
}

@keyframes lineFloat {
    0%, 100% {
        transform: translateY(0) scale(1) rotate(0deg);
        opacity: 0.6;
    }
    50% {
        transform: translateY(-20px) scale(1.05) rotate(1deg);
        opacity: 0.8;
    }
}

.hero-content {
    z-index: 10;
    opacity: 0;
    transform: translateY(50px);
    animation: fadeInUp 1.5s cubic-bezier(0.19, 1, 0.22, 1) forwards 0.5s;
}

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

.hero-title {
    font-size: 5.5rem;
    font-weight: 800;
    margin-bottom: 30px;
    display: inline-block;
}

.hero-title-word {
    display: block;
    opacity: 0;
    transform: translateY(20px);
    animation: wordSlideIn 1s cubic-bezier(0.19, 1, 0.22, 1) forwards;
    background: linear-gradient(45deg, #fff, #00d4ff, #764ba2, #fff);
    background-size: 300% 300%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 0 40px rgba(0, 212, 255, 0.4), 0 0 80px rgba(0, 212, 255, 0.2);
    animation: 
        wordSlideIn 1s cubic-bezier(0.19, 1, 0.22, 1) forwards,
        titleGlow 3s ease-in-out infinite;
}

.hero-title-word:nth-child(1) {
    animation: 
        wordSlideIn 1s cubic-bezier(0.19, 1, 0.22, 1) 0.8s forwards,
        titleGlow 3s ease-in-out 0.8s infinite;
}

.hero-title-word:nth-child(2) {
    animation: 
        wordSlideIn 1s cubic-bezier(0.19, 1, 0.22, 1) 1.2s forwards,
        titleGlow 3s ease-in-out 1.2s infinite;
}

.hero-title-word:nth-child(3) {
    animation: 
        wordSlideIn 1s cubic-bezier(0.19, 1, 0.22, 1) 1.6s forwards,
        titleGlow 3s ease-in-out 1.6s infinite;
}

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

@keyframes titleGlow {
    0%, 100% {
        background-position: 0% 50%;
        text-shadow: 0 0 40px rgba(0, 212, 255, 0.4), 0 0 80px rgba(0, 212, 255, 0.2);
    }
    50% {
        background-position: 100% 50%;
        text-shadow: 0 0 60px rgba(0, 212, 255, 0.6), 0 0 120px rgba(0, 212, 255, 0.3);
    }
}

.hero-subtitle {
    font-size: 1.6rem;
    margin-bottom: 50px;
    color: rgba(255, 255, 255, 0.95);
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
    font-weight: 300;
    letter-spacing: 1px;
    opacity: 0;
    animation: subtitleFadeIn 1s ease forwards 2s;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

@keyframes subtitleFadeIn {
    to {
        opacity: 1;
    }
}

.hero-buttons {
    display: flex;
    gap: 25px;
    justify-content: center;
    flex-wrap: wrap;
    opacity: 0;
    animation: buttonsFadeIn 1s ease forwards 2.3s;
}

@keyframes buttonsFadeIn {
    to {
        opacity: 1;
    }
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 18px 45px;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 700;
    transition: all 0.4s cubic-bezier(0.19, 1, 0.22, 1);
    text-transform: uppercase;
    letter-spacing: 2px;
    position: relative;
    overflow: hidden;
    font-size: 1rem;
    border: none;
    cursor: pointer;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.btn::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: left 0.6s ease;
}

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

.btn-primary {
    background: linear-gradient(45deg, #00d4ff, #0099cc, #764ba2);
    background-size: 300% 300%;
    color: #fff;
    animation: buttonGradient 4s ease infinite;
    box-shadow: 0 15px 40px rgba(0, 212, 255, 0.4), 0 5px 20px rgba(0, 212, 255, 0.2);
}

.btn-primary:hover {
    transform: translateY(-5px) scale(1.05);
    box-shadow: 0 25px 60px rgba(0, 212, 255, 0.6), 0 10px 30px rgba(0, 212, 255, 0.3);
    animation-play-state: paused;
}

.btn-secondary {
    background: transparent;
    color: #fff;
    border: 3px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: #00d4ff;
    transform: translateY(-5px) scale(1.05);
    box-shadow: 0 20px 50px rgba(0, 212, 255, 0.3), 0 10px 25px rgba(0, 212, 255, 0.15);
}

/* AI 助手按钮 */
.btn-ai {
    background: linear-gradient(135deg, #8b5cf6 0%, #ec4899 100%);
    color: #fff;
    border: none;
    box-shadow: 0 15px 40px rgba(139, 92, 246, 0.4);
    animation: aiGlow 3s ease-in-out infinite;
}

.btn-ai:hover {
    transform: translateY(-5px) scale(1.05);
    box-shadow: 0 25px 60px rgba(139, 92, 246, 0.6), 0 10px 30px rgba(236, 72, 153, 0.4);
    animation-play-state: paused;
}

@keyframes aiGlow {
    0%, 100% {
        box-shadow: 0 15px 40px rgba(139, 92, 246, 0.4);
    }
    50% {
        box-shadow: 0 20px 50px rgba(139, 92, 246, 0.6), 0 10px 30px rgba(236, 72, 153, 0.3);
    }
}

/* 导航栏 AI 助手链接 */
.nav-ai {
    background: linear-gradient(135deg, #8b5cf6 0%, #ec4899 100%);
    padding: 0.5rem 1rem !important;
    border-radius: 20px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.nav-ai:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(139, 92, 246, 0.4);
}

.btn-icon {
    font-size: 1.2rem;
    transition: transform 0.3s ease;
}

.btn:hover .btn-icon {
    transform: translateX(5px) scale(1.2);
}

@keyframes buttonGradient {
    0%, 100% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
}

.hero-scroll {
    position: absolute;
    bottom: 50px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    opacity: 0;
    animation: scrollFadeIn 1s ease forwards 2.6s;
    z-index: 10;
}

@keyframes scrollFadeIn {
    to {
        opacity: 1;
    }
}

.scroll-indicator {
    width: 3px;
    height: 50px;
    background: linear-gradient(to bottom, #00d4ff, transparent);
    position: relative;
    overflow: hidden;
    border-radius: 2px;
}

.scroll-indicator::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 30%;
    background: #fff;
    box-shadow: 0 0 10px rgba(0, 212, 255, 0.8);
    animation: scrollIndicator 2s ease-in-out infinite;
}

@keyframes scrollIndicator {
    0% {
        transform: translateY(-100%);
    }
    50% {
        transform: translateY(100%);
    }
    100% {
        transform: translateY(250%);
    }
}

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

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

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: #333;
    margin-bottom: 20px;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(45deg, #00d4ff, #0099cc);
    border-radius: 2px;
}

.section-divider {
    width: 100px;
    height: 2px;
    background: linear-gradient(45deg, #00d4ff, #0099cc);
    margin: 20px auto;
    position: relative;
}

.section-divider::before,
.section-divider::after {
    content: '';
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 10px;
    height: 10px;
    background: #00d4ff;
    border-radius: 50%;
}

.section-divider::before {
    left: -20px;
}

.section-divider::after {
    right: -20px;
}

/* 关于我们 */
.about {
    background: linear-gradient(135deg, #f8f9fa 0%, #e8f4f8 100%);
    position: relative;
    overflow: hidden;
}

.about::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(0, 212, 255, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    z-index: 0;
}

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

.about-text p {
    font-size: 1.2rem;
    line-height: 2;
    margin-bottom: 25px;
    color: #555;
    font-weight: 400;
    letter-spacing: 0.5px;
}

.about-text p:first-child {
    font-size: 1.3rem;
    font-weight: 500;
    color: #333;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 35px;
}

.stat-item {
    text-align: center;
    padding: 40px 25px;
    background: rgba(255, 255, 255, 0.8);
    border-radius: 20px;
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.12), 0 5px 15px rgba(0, 0, 0, 0.08);
    transition: all 0.4s cubic-bezier(0.19, 1, 0.22, 1);
    border: 1px solid rgba(0, 212, 255, 0.1);
    backdrop-filter: blur(10px);
    position: relative;
    overflow: hidden;
}

.stat-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: linear-gradient(90deg, #00d4ff, #764ba2);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
}

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

.stat-item:hover {
    transform: translateY(-15px) scale(1.05);
    box-shadow: 0 30px 60px rgba(0, 212, 255, 0.2), 0 15px 30px rgba(0, 212, 255, 0.1);
    background: rgba(255, 255, 255, 1);
    border-color: #00d4ff;
}

.stat-number {
    font-size: 4rem;
    font-weight: 800;
    background: linear-gradient(45deg, #00d4ff, #764ba2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 15px;
    display: block;
    position: relative;
}

.stat-number::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: linear-gradient(45deg, #00d4ff, #764ba2);
    transition: width 0.3s ease;
}

.stat-item:hover .stat-number::after {
    width: 50px;
}

.stat-label {
    font-size: 16px;
    color: #666;
    text-transform: uppercase;
    letter-spacing: 2px;
    font-weight: 600;
    transition: color 0.3s ease;
}

.stat-item:hover .stat-label {
    color: #00d4ff;
}

/* 增强统计数字动画 */
.stat-number {
    animation: statGlow 3s ease-in-out infinite;
}

@keyframes statGlow {
    0%, 100% {
        filter: drop-shadow(0 0 5px rgba(0, 212, 255, 0.3));
    }
    50% {
        filter: drop-shadow(0 0 15px rgba(0, 212, 255, 0.6));
    }
}

/* 核心业务 */
.services {
    background: #fff;
    position: relative;
    overflow: hidden;
}

.services::before {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(118, 75, 162, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    z-index: 0;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 40px;
    position: relative;
    z-index: 1;
}

.service-card {
    background: rgba(255, 255, 255, 0.8);
    padding: 50px 35px;
    border-radius: 25px;
    text-align: center;
    transition: all 0.5s cubic-bezier(0.19, 1, 0.22, 1);
    border: 2px solid rgba(0, 212, 255, 0.1);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.1), 0 10px 25px rgba(0, 0, 0, 0.05);
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.05) 0%, rgba(118, 75, 162, 0.05) 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: -1;
}

.service-card::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: conic-gradient(from 0deg, transparent, rgba(0, 212, 255, 0.2), transparent);
    animation: cardRotate 8s linear infinite;
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: -2;
}

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

.service-card:hover {
    transform: translateY(-20px) scale(1.03);
    box-shadow: 0 40px 80px rgba(0, 212, 255, 0.25), 0 20px 40px rgba(0, 212, 255, 0.15);
    border-color: #00d4ff;
    background: rgba(255, 255, 255, 1);
}

.service-card:hover::before {
    opacity: 1;
}

.service-card:hover::after {
    opacity: 1;
}

.service-icon {
    width: 100px;
    height: 100px;
    margin: 0 auto 30px;
    background: linear-gradient(135deg, #00d4ff, #764ba2);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.5s cubic-bezier(0.19, 1, 0.22, 1);
    position: relative;
    box-shadow: 0 15px 40px rgba(0, 212, 255, 0.3);
    overflow: hidden;
}

.service-icon::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s ease;
}

.service-card:hover .service-icon {
    transform: scale(1.2) rotate(10deg);
    box-shadow: 0 25px 60px rgba(0, 212, 255, 0.5), 0 15px 30px rgba(118, 75, 162, 0.3);
    border-radius: 50%;
}

.service-card:hover .service-icon::before {
    left: 100%;
}

.service-icon svg {
    color: #fff;
    width: 50px;
    height: 50px;
    transition: transform 0.3s ease;
    position: relative;
    z-index: 1;
}

.service-card:hover .service-icon svg {
    transform: scale(1.1);
}

.service-title {
    font-size: 1.6rem;
    font-weight: 700;
    color: #333;
    margin-bottom: 20px;
    position: relative;
    display: inline-block;
}

.service-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 3px;
    background: linear-gradient(45deg, #00d4ff, #764ba2);
    transition: width 0.3s ease;
    border-radius: 2px;
}

.service-card:hover .service-title::after {
    width: 60px;
}

.service-description {
    color: #666;
    line-height: 1.8;
    font-size: 1.1rem;
    font-weight: 400;
    transition: color 0.3s ease;
}

.service-card:hover .service-description {
    color: #444;
}

/* 技术优势 */
.technology {
    background: radial-gradient(ellipse at center, #0a0a1a 0%, #000000 100%);
    color: #fff;
    position: relative;
    overflow: hidden;
    padding: 120px 0;
}

.technology::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 30%, rgba(0, 212, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(118, 75, 162, 0.1) 0%, transparent 50%),
        url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="20" height="20" patternUnits="userSpaceOnUse"><path d="M 20 0 L 0 0 0 20" fill="none" stroke="%2300d4ff" stroke-width="0.3" opacity="0.08"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    z-index: 0;
    animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
    0% {
        transform: translate(0, 0);
    }
    100% {
        transform: translate(20px, 20px);
    }
}

.technology .section-title {
    color: #fff;
    text-shadow: 0 0 30px rgba(0, 212, 255, 0.3);
}

.tech-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 100px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.tech-features {
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
}

.tech-feature {
    background: rgba(255, 255, 255, 0.03);
    padding: 40px;
    border-radius: 20px;
    border: 1px solid rgba(0, 212, 255, 0.1);
    transition: all 0.5s cubic-bezier(0.19, 1, 0.22, 1);
    backdrop-filter: blur(15px);
    position: relative;
    overflow: hidden;
}

.tech-feature::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 212, 255, 0.1), transparent);
    transition: left 0.8s ease;
}

.tech-feature:hover::before {
    left: 100%;
}

.tech-feature:hover {
    background: rgba(0, 212, 255, 0.08);
    transform: translateX(20px) scale(1.05);
    border-color: #00d4ff;
    box-shadow: 0 30px 60px rgba(0, 212, 255, 0.2), 0 15px 30px rgba(0, 212, 255, 0.1);
}

.tech-feature h3 {
    color: #00d4ff;
    font-size: 1.8rem;
    margin-bottom: 20px;
    font-weight: 700;
    position: relative;
    display: inline-block;
    text-shadow: 0 0 20px rgba(0, 212, 255, 0.5);
}

.tech-feature h3::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 50px;
    height: 3px;
    background: linear-gradient(45deg, #00d4ff, #764ba2);
    border-radius: 2px;
    transition: width 0.3s ease;
}

.tech-feature:hover h3::after {
    width: 80px;
}

.tech-feature p {
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.8;
    font-size: 1.1rem;
    font-weight: 300;
    transition: color 0.3s ease;
}

.tech-feature:hover p {
    color: #fff;
}

.tech-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    height: 500px;
}

.tech-circle {
    width: 450px;
    height: 450px;
    border: 3px solid rgba(0, 212, 255, 0.2);
    border-radius: 50%;
    position: relative;
    animation: circleRotate 15s linear infinite;
    box-shadow: 0 0 50px rgba(0, 212, 255, 0.1);
}

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

.tech-circle::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
    height: 100%;
    border: 2px solid rgba(118, 75, 162, 0.2);
    border-radius: 50%;
    animation: circleRotate 10s linear infinite reverse;
}

.circle-inner {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 320px;
    height: 320px;
    border: 2px solid rgba(0, 212, 255, 0.4);
    border-radius: 50%;
    animation: circleInnerRotate 12s linear infinite;
}

@keyframes circleInnerRotate {
    from {
        transform: translate(-50%, -50%) rotate(0deg);
    }
    to {
        transform: translate(-50%, -50%) rotate(-360deg);
    }
}

.circle-inner::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 220px;
    height: 220px;
    border: 1px solid rgba(118, 75, 162, 0.3);
    border-radius: 50%;
    animation: circleInner2Rotate 8s linear infinite;
}

@keyframes circleInner2Rotate {
    from {
        transform: translate(-50%, -50%) rotate(0deg);
    }
    to {
        transform: translate(-50%, -50%) rotate(360deg);
    }
}

.circle-dot {
    position: absolute;
    top: 10px;
    left: 50%;
    transform: translateX(-50%);
    width: 25px;
    height: 25px;
    background: linear-gradient(45deg, #00d4ff, #764ba2);
    border-radius: 50%;
    box-shadow: 0 0 30px rgba(0, 212, 255, 0.8), 0 0 60px rgba(0, 212, 255, 0.4);
    animation: dotPulse 2s ease-in-out infinite;
    z-index: 2;
}

@keyframes dotPulse {
    0%, 100% {
        transform: translateX(-50%) scale(1);
        opacity: 1;
        box-shadow: 0 0 30px rgba(0, 212, 255, 0.8), 0 0 60px rgba(0, 212, 255, 0.4);
    }
    50% {
        transform: translateX(-50%) scale(1.3);
        opacity: 0.9;
        box-shadow: 0 0 50px rgba(0, 212, 255, 1), 0 0 100px rgba(0, 212, 255, 0.6);
    }
}

/* 技术圆圈装饰点 */
.tech-circle .circle-dot:nth-child(2) {
    top: auto;
    bottom: 10px;
    animation-delay: 0.5s;
}

.tech-circle .circle-dot:nth-child(3) {
    top: 50%;
    left: 10px;
    transform: translateY(-50%);
    animation-delay: 1s;
}

.tech-circle .circle-dot:nth-child(4) {
    top: 50%;
    left: auto;
    right: 10px;
    transform: translateY(-50%);
    animation-delay: 1.5s;
}

/* 中心发光效果 */
.circle-inner::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100px;
    height: 100px;
    background: radial-gradient(circle, rgba(0, 212, 255, 0.3) 0%, transparent 70%);
    border-radius: 50%;
    animation: centerGlow 3s ease-in-out infinite;
}

@keyframes centerGlow {
    0%, 100% {
        transform: translate(-50%, -50%) scale(1);
        opacity: 0.6;
    }
    50% {
        transform: translate(-50%, -50%) scale(1.5);
        opacity: 1;
    }
}

/* 联系我们 */
.contact {
    background: linear-gradient(135deg, #f8f9fa 0%, #e0f7fa 50%, #f3e5f5 100%);
    position: relative;
    overflow: hidden;
    padding: 120px 0;
}

.contact::before {
    content: '';
    position: absolute;
    top: -20%;
    right: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(0, 212, 255, 0.15) 0%, transparent 70%);
    border-radius: 50%;
    z-index: 0;
}

.contact::after {
    content: '';
    position: absolute;
    bottom: -10%;
    left: -5%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(118, 75, 162, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    z-index: 0;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    position: relative;
    z-index: 1;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 35px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 25px;
    background: rgba(255, 255, 255, 0.7);
    padding: 35px;
    border-radius: 20px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.1), 0 10px 25px rgba(0, 0, 0, 0.05);
    transition: all 0.5s cubic-bezier(0.19, 1, 0.22, 1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(0, 212, 255, 0.1);
    position: relative;
    overflow: hidden;
}

.contact-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.05) 0%, rgba(118, 75, 162, 0.05) 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: -1;
}

.contact-item:hover {
    transform: translateY(-15px) scale(1.03);
    box-shadow: 0 30px 70px rgba(0, 212, 255, 0.2), 0 15px 35px rgba(0, 212, 255, 0.1);
    background: rgba(255, 255, 255, 0.95);
    border-color: #00d4ff;
}

.contact-item:hover::before {
    opacity: 1;
}

.contact-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, #00d4ff, #764ba2);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: all 0.3s ease;
    position: relative;
    box-shadow: 0 10px 30px rgba(0, 212, 255, 0.3);
}

.contact-item:hover .contact-icon {
    transform: scale(1.1) rotate(5deg);
    box-shadow: 0 15px 40px rgba(0, 212, 255, 0.5), 0 8px 20px rgba(118, 75, 162, 0.3);
    border-radius: 50%;
}

.contact-icon svg {
    color: #fff;
    width: 35px;
    height: 35px;
    transition: transform 0.3s ease;
    position: relative;
    z-index: 1;
}

.contact-item:hover .contact-icon svg {
    transform: scale(1.2);
}

.contact-text h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: #333;
    margin-bottom: 10px;
    transition: color 0.3s ease;
}

.contact-item:hover .contact-text h3 {
    color: #00d4ff;
}

.contact-text p {
    color: #666;
    line-height: 1.6;
    font-size: 1.1rem;
    transition: color 0.3s ease;
    word-wrap: break-word;
    word-break: break-word;
}

.contact-item:hover .contact-text p {
    color: #444;
}

.contact-form {
    background: rgba(255, 255, 255, 0.8);
    padding: 50px;
    border-radius: 25px;
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.15), 0 15px 35px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(15px);
    border: 1px solid rgba(0, 212, 255, 0.1);
    transition: all 0.5s ease;
    position: relative;
    overflow: hidden;
}

.contact-form::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: conic-gradient(from 0deg, transparent, rgba(0, 212, 255, 0.05), transparent);
    animation: formRotate 15s linear infinite;
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: -1;
}

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

.contact-form:hover::before {
    opacity: 1;
}

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

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 20px 25px;
    border: 2px solid rgba(0, 212, 255, 0.1);
    border-radius: 12px;
    font-size: 1.1rem;
    font-family: 'Montserrat', sans-serif;
    transition: all 0.5s cubic-bezier(0.19, 1, 0.22, 1);
    background: rgba(255, 255, 255, 0.5);
    color: #333;
    box-shadow: inset 0 2px 10px rgba(0, 0, 0, 0.05);
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: #00d4ff;
    background: rgba(255, 255, 255, 0.9);
    box-shadow: 
        inset 0 2px 10px rgba(0, 212, 255, 0.1),
        0 0 0 5px rgba(0, 212, 255, 0.1);
    transform: translateY(-2px);
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
    color: #999;
    font-weight: 300;
    transition: color 0.3s ease;
}

.contact-form input:focus::placeholder,
.contact-form textarea:focus::placeholder {
    color: #ccc;
}

.contact-form textarea {
    resize: vertical;
    min-height: 200px;
    font-family: 'Montserrat', sans-serif;
}

/* 提交按钮特殊样式 */
.contact-form .btn {
    width: 100%;
    padding: 20px;
    font-size: 1.2rem;
    letter-spacing: 2px;
    border: none;
    cursor: pointer;
    transition: all 0.5s cubic-bezier(0.19, 1, 0.22, 1);
    position: relative;
    overflow: hidden;
    text-transform: uppercase;
    font-weight: 700;
}

.contact-form .btn:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 20px 50px rgba(0, 212, 255, 0.5), 0 10px 30px rgba(0, 212, 255, 0.3);
}

/* 页脚 */
.footer {
    background: linear-gradient(135deg, #000000 0%, #0a0a1a 100%);
    color: #fff;
    padding: 100px 0 50px;
    position: relative;
    overflow: hidden;
    border-top: 1px solid rgba(0, 212, 255, 0.1);
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 20%, rgba(0, 212, 255, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(118, 75, 162, 0.08) 0%, transparent 50%),
        url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid-footer" width="15" height="15" patternUnits="userSpaceOnUse"><path d="M 15 0 L 0 0 0 15" fill="none" stroke="%2300d4ff" stroke-width="0.2" opacity="0.05"/></pattern></defs><rect width="100" height="100" fill="url(%23grid-footer)"/></svg>');
    z-index: 0;
    animation: footerGrid 30s linear infinite;
}

@keyframes footerGrid {
    0% {
        transform: translate(0, 0);
    }
    100% {
        transform: translate(15px, 15px);
    }
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 60px;
    margin-bottom: 60px;
    position: relative;
    z-index: 1;
}

.footer-logo {
    position: relative;
    overflow: hidden;
    padding: 20px;
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.02);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(0, 212, 255, 0.1);
    transition: all 0.3s ease;
}

.footer-logo:hover {
    background: rgba(0, 212, 255, 0.05);
    border-color: #00d4ff;
    transform: translateY(-5px);
    box-shadow: 0 20px 50px rgba(0, 212, 255, 0.15);
}

.footer-logo h3 {
    color: #00d4ff;
    font-size: 2.2rem;
    font-weight: 800;
    margin-bottom: 15px;
    background: linear-gradient(45deg, #00d4ff, #764ba2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 0 30px rgba(0, 212, 255, 0.3);
    transition: all 0.3s ease;
}

.footer-logo:hover h3 {
    text-shadow: 0 0 50px rgba(0, 212, 255, 0.5);
}

.footer-logo p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 1rem;
    line-height: 1.6;
    transition: color 0.3s ease;
}

.footer-logo:hover p {
    color: rgba(255, 255, 255, 0.9);
}

.footer-links h4,
.footer-social h4 {
    color: #fff;
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 25px;
    position: relative;
    display: inline-block;
    text-shadow: 0 0 20px rgba(0, 212, 255, 0.3);
}

.footer-links h4::after,
.footer-social h4::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 40px;
    height: 3px;
    background: linear-gradient(45deg, #00d4ff, #764ba2);
    border-radius: 2px;
    transition: width 0.3s ease;
}

.footer-links:hover h4::after,
.footer-social:hover h4::after {
    width: 70px;
}

.footer-links ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.footer-links ul li a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: all 0.4s cubic-bezier(0.19, 1, 0.22, 1);
    font-size: 1.1rem;
    font-weight: 400;
    position: relative;
    display: inline-block;
    padding-left: 10px;
}

.footer-links ul li a::before {
    content: '→';
    position: absolute;
    left: -10px;
    top: 50%;
    transform: translateY(-50%);
    color: #00d4ff;
    opacity: 0;
    transition: all 0.3s ease;
}

.footer-links ul li a:hover {
    color: #00d4ff;
    padding-left: 25px;
    text-shadow: 0 0 20px rgba(0, 212, 255, 0.4);
}

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

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

.social-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 60px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 50%;
    color: #fff;
    text-decoration: none;
    transition: all 0.5s cubic-bezier(0.19, 1, 0.22, 1);
    border: 2px solid rgba(0, 212, 255, 0.2);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
}

.social-icon::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: conic-gradient(from 0deg, transparent, rgba(0, 212, 255, 0.3), transparent);
    animation: socialRotate 4s linear infinite;
    opacity: 0;
    transition: opacity 0.3s ease;
}

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

.social-icon:hover {
    background: rgba(0, 212, 255, 0.1);
    border-color: #00d4ff;
    transform: translateY(-8px) scale(1.1);
    box-shadow: 0 20px 50px rgba(0, 212, 255, 0.3), 0 10px 30px rgba(0, 212, 255, 0.2);
}

.social-icon:hover::before {
    opacity: 1;
}

.social-icon svg {
    width: 30px;
    height: 30px;
    transition: transform 0.3s ease;
    position: relative;
    z-index: 1;
}

.social-icon:hover svg {
    transform: scale(1.2);
    filter: drop-shadow(0 0 10px rgba(255, 255, 255, 0.5));
}

.footer-bottom {
    text-align: center;
    padding-top: 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    color: rgba(255, 255, 255, 0.5);
    font-size: 1rem;
    position: relative;
    z-index: 1;
    font-weight: 300;
}

.footer-bottom::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 200px;
    height: 1px;
    background: linear-gradient(90deg, transparent, #00d4ff, transparent);
    opacity: 0.5;
}

/* 页脚版权信息动画 */
.footer-bottom p {
    transition: color 0.3s ease;
    cursor: default;
}

.footer-bottom p:hover {
    color: #00d4ff;
    text-shadow: 0 0 20px rgba(0, 212, 255, 0.3);
}

/* 添加页脚装饰元素 */
.footer::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, transparent, #00d4ff, #764ba2, transparent);
    animation: footerBorder 5s ease-in-out infinite;
    background-size: 200% 100%;
}

@keyframes footerBorder {
    0%, 100% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
}

/* 回到顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    background: linear-gradient(45deg, #00d4ff, #764ba2);
    color: #fff;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s cubic-bezier(0.19, 1, 0.22, 1);
    box-shadow: 0 15px 40px rgba(0, 212, 255, 0.3), 0 5px 15px rgba(0, 212, 255, 0.15);
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.back-to-top:hover {
    transform: translateY(-5px) scale(1.1);
    box-shadow: 0 25px 60px rgba(0, 212, 255, 0.5), 0 10px 30px rgba(0, 212, 255, 0.3);
    background: linear-gradient(45deg, #764ba2, #00d4ff);
}

.back-to-top.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top svg {
    width: 30px;
    height: 30px;
    transition: transform 0.3s ease;
}

.back-to-top:hover svg {
    transform: translateY(-3px) rotate(180deg);
}

/* 增强的滚动条样式 */
::-webkit-scrollbar {
    width: 12px;
}

::-webkit-scrollbar-track {
    background: linear-gradient(180deg, #f1f1f1 0%, #e8f4f8 100%);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(45deg, #00d4ff, #764ba2, #00d4ff);
    background-size: 200% 200%;
    border-radius: 6px;
    box-shadow: inset 0 0 10px rgba(0, 0, 0, 0.1);
    animation: scrollbarGradient 3s ease-in-out infinite;
}

@keyframes scrollbarGradient {
    0%, 100% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(45deg, #764ba2, #00d4ff, #764ba2);
    background-size: 200% 200%;
    box-shadow: inset 0 0 10px rgba(0, 0, 0, 0.2);
}

/* 选择文本样式 */
::selection {
    background: rgba(0, 212, 255, 0.3);
    color: #333;
}

::-moz-selection {
    background: rgba(0, 212, 255, 0.3);
    color: #333;
}

/* 增强的焦点样式 */
*:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.2);
    transition: box-shadow 0.3s ease;
}

/* 加载动画增强 */
.loading {
    background: radial-gradient(ellipse at center, #000000 0%, #0a0a1a 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 99999;
    transition: opacity 0.8s ease;
}

.loading::after {
    content: '';
    width: 80px;
    height: 80px;
    border: 5px solid rgba(0, 212, 255, 0.1);
    border-top-color: #00d4ff;
    border-radius: 50%;
    animation: spin 1.5s linear infinite;
    box-shadow: 0 0 30px rgba(0, 212, 255, 0.3);
}

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

/* 响应式调整 */
@media (max-width: 768px) {
    .back-to-top {
        width: 50px;
        height: 50px;
        bottom: 20px;
        right: 20px;
    }
    
    .back-to-top svg {
        width: 25px;
        height: 25px;
    }
}

/* 响应式设计 */
@media (max-width: 992px) {
    .hero-title {
        font-size: 3.5rem;
    }
    
    .about-content,
    .tech-content,
    .contact-content {
        grid-template-columns: 1fr;
    }
    
    .nav-links {
        display: none;
    }
    
    .menu-toggle {
        display: flex;
    }
    
    .tech-circle {
        width: 300px;
        height: 300px;
    }
    
    .circle-inner {
        width: 220px;
        height: 220px;
    }
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .about-stats {
        grid-template-columns: 1fr;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-form {
        padding: 30px 20px;
    }
}

@media (max-width: 576px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .btn {
        padding: 12px 30px;
        font-size: 0.9rem;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .tech-circle {
        width: 250px;
        height: 250px;
    }
    
    .circle-inner {
        width: 180px;
        height: 180px;
    }
}

/* 滚动动画 */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* 平滑滚动 */
html {
    scroll-behavior: smooth;
}

/* 加载动画 */
.loading {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: #000;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.5s ease;
}

.loading::after {
    content: '';
    width: 50px;
    height: 50px;
    border: 5px solid rgba(0, 212, 255, 0.2);
    border-top-color: #00d4ff;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* 自定义滚动条 */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(45deg, #00d4ff, #0099cc);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(45deg, #0099cc, #00d4ff);
}

/* 粒子样式 */
.particle {
    position: absolute;
    border-radius: 50%;
    background: linear-gradient(45deg, #00d4ff, #0099cc);
    box-shadow: 0 0 10px rgba(0, 212, 255, 0.5);
}

/* 确保粒子容器可见 */
.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

/* 增强背景视觉效果 */
.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 50% 50%, rgba(0, 212, 255, 0.1) 0%, transparent 50%);
    z-index: -1;
}

.technology::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 50% 50%, rgba(0, 212, 255, 0.05) 0%, transparent 50%);
    z-index: 0;
}