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

body {
    font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background: linear-gradient(135deg, #0a1929 0%, #1a2332 50%, #0f2744 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow-x: hidden;
    position: relative;
    color: #ffffff;
}

/* 背景层 */
.background-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 50%, rgba(0, 212, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(0, 150, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 50% 20%, rgba(100, 200, 255, 0.05) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
}

/* 粒子动画 */
.particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
}

.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: #00d4ff;
    border-radius: 50%;
    opacity: 0.6;
    animation: float 20s infinite ease-in-out;
}

.particle:nth-child(1) {
    left: 10%;
    top: 20%;
    animation-delay: 0s;
    animation-duration: 15s;
}

.particle:nth-child(2) {
    left: 80%;
    top: 40%;
    animation-delay: 2s;
    animation-duration: 18s;
}

.particle:nth-child(3) {
    left: 30%;
    top: 60%;
    animation-delay: 4s;
    animation-duration: 22s;
}

.particle:nth-child(4) {
    left: 70%;
    top: 10%;
    animation-delay: 1s;
    animation-duration: 16s;
}

.particle:nth-child(5) {
    left: 50%;
    top: 80%;
    animation-delay: 3s;
    animation-duration: 20s;
}

.particle:nth-child(6) {
    left: 20%;
    top: 90%;
    animation-delay: 5s;
    animation-duration: 19s;
}

.particle:nth-child(7) {
    left: 90%;
    top: 70%;
    animation-delay: 2.5s;
    animation-duration: 17s;
}

.particle:nth-child(8) {
    left: 60%;
    top: 30%;
    animation-delay: 4.5s;
    animation-duration: 21s;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0) translateX(0) scale(1);
        opacity: 0.6;
    }
    25% {
        transform: translateY(-50px) translateX(30px) scale(1.2);
        opacity: 0.8;
    }
    50% {
        transform: translateY(-100px) translateX(-30px) scale(0.8);
        opacity: 0.4;
    }
    75% {
        transform: translateY(-50px) translateX(30px) scale(1.1);
        opacity: 0.7;
    }
}

/* 主容器 */
.container {
    position: relative;
    z-index: 2;
    max-width: 1200px;
    width: 95%;
    padding: 40px;
    text-align: center;
}

/* Logo 部分 */
.logo-section {
    margin-bottom: 50px;
    animation: fadeInDown 1s ease-out;
}

.logo-icon {
    width: 100px;
    height: 100px;
    margin: 0 auto 20px;
    animation: rotate 10s linear infinite;
}

.logo-icon svg {
    width: 100%;
    height: 100%;
    filter: drop-shadow(0 0 20px rgba(0, 212, 255, 0.5));
}

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

.company-name {
    font-size: 2rem;
    font-weight: 300;
    letter-spacing: 4px;
    color: #00d4ff;
    text-shadow: 0 0 20px rgba(0, 212, 255, 0.5);
}

/* 主内容 */
.main-content {
    background: rgba(255, 255, 255, 0.03);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 60px 40px;
    border: 1px solid rgba(0, 212, 255, 0.2);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    animation: fadeInUp 1s ease-out 0.3s backwards;
}

.title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    background: linear-gradient(135deg, #00d4ff 0%, #0096ff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: pulse 2s ease-in-out infinite;
}

.subtitle {
    font-size: 1.5rem;
    color: #a0d8f1;
    margin-bottom: 60px;
    letter-spacing: 2px;
}

/* 功能卡片 */
.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-bottom: 60px;
}

.feature-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: 15px;
    padding: 40px 30px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.feature-card::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 0.5s;
}

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

.feature-card:hover {
    transform: translateY(-10px);
    border-color: #00d4ff;
    box-shadow: 0 10px 40px rgba(0, 212, 255, 0.3);
}

.feature-card.highlight {
    border-color: #00d4ff;
    background: rgba(0, 212, 255, 0.08);
    box-shadow: 0 0 30px rgba(0, 212, 255, 0.2);
}

.icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 25px;
    color: #00d4ff;
    filter: drop-shadow(0 0 10px rgba(0, 212, 255, 0.5));
}

.icon.pulse {
    animation: iconPulse 2s ease-in-out infinite;
}

@keyframes iconPulse {
    0%, 100% {
        transform: scale(1);
        filter: drop-shadow(0 0 10px rgba(0, 212, 255, 0.5));
    }
    50% {
        transform: scale(1.1);
        filter: drop-shadow(0 0 20px rgba(0, 212, 255, 0.8));
    }
}

.feature-card h3 {
    font-size: 1.4rem;
    margin-bottom: 15px;
    color: #ffffff;
}

.feature-card p {
    font-size: 1rem;
    color: #a0d8f1;
    line-height: 1.8;
}

/* 信号条 */
.signal-bars {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 20px;
}

.signal-bars span {
    width: 8px;
    background: #00d4ff;
    border-radius: 2px;
    animation: signalWave 1.5s ease-in-out infinite;
}

.signal-bars span:nth-child(1) {
    height: 15px;
    animation-delay: 0s;
}

.signal-bars span:nth-child(2) {
    height: 25px;
    animation-delay: 0.2s;
}

.signal-bars span:nth-child(3) {
    height: 35px;
    animation-delay: 0.4s;
}

.signal-bars span:nth-child(4) {
    height: 45px;
    animation-delay: 0.6s;
}

@keyframes signalWave {
    0%, 100% {
        opacity: 0.4;
    }
    50% {
        opacity: 1;
    }
}

/* 技术规格 */
.tech-specs {
    display: flex;
    justify-content: space-around;
    margin-bottom: 60px;
    padding: 40px 0;
    border-top: 1px solid rgba(0, 212, 255, 0.2);
    border-bottom: 1px solid rgba(0, 212, 255, 0.2);
}

.spec-item {
    text-align: center;
}

.spec-value {
    font-size: 2.5rem;
    font-weight: 700;
    color: #00d4ff;
    margin-bottom: 10px;
    text-shadow: 0 0 10px rgba(0, 212, 255, 0.5);
}

.spec-label {
    font-size: 1rem;
    color: #a0d8f1;
    letter-spacing: 1px;
}

/* 进度条 */
.progress-section {
    margin-bottom: 40px;
}

.progress-text {
    font-size: 1.2rem;
    color: #a0d8f1;
    margin-bottom: 20px;
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    overflow: hidden;
    margin-bottom: 10px;
}

.progress-fill {
    height: 100%;
    width: 75%;
    background: linear-gradient(90deg, #00d4ff, #0096ff);
    border-radius: 10px;
    animation: progressAnimation 2s ease-out;
    box-shadow: 0 0 10px rgba(0, 212, 255, 0.8);
}

@keyframes progressAnimation {
    from {
        width: 0;
    }
    to {
        width: 75%;
    }
}

.progress-percent {
    font-size: 1.5rem;
    color: #00d4ff;
    font-weight: 600;
}

/* 联系信息 */
.contact-info {
    margin-top: 40px;
    padding-top: 40px;
    border-top: 1px solid rgba(0, 212, 255, 0.2);
}

.contact-info p {
    font-size: 1.2rem;
    color: #a0d8f1;
    margin-bottom: 20px;
}

.contact-details {
    display: flex;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
}

.contact-details span {
    font-size: 1.1rem;
    color: #00d4ff;
    padding: 12px 30px;
    background: rgba(0, 212, 255, 0.1);
    border-radius: 25px;
    border: 1px solid rgba(0, 212, 255, 0.3);
    transition: all 0.3s ease;
}

.contact-details span:hover {
    background: rgba(0, 212, 255, 0.2);
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.4);
}

/* 页脚 */
.footer {
    margin-top: 40px;
    padding-top: 30px;
    border-top: 1px solid rgba(0, 212, 255, 0.1);
    animation: fadeIn 1s ease-out 0.6s backwards;
}

.footer p {
    font-size: 0.95rem;
    color: #6b8ca8;
    letter-spacing: 1px;
}

/* 动画 */
@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.8;
    }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .title {
        font-size: 2.5rem;
    }

    .subtitle {
        font-size: 1.2rem;
    }

    .company-name {
        font-size: 1.5rem;
    }

    .features {
        grid-template-columns: 1fr;
    }

    .tech-specs {
        flex-direction: column;
        gap: 30px;
    }

    .contact-details {
        flex-direction: column;
        gap: 15px;
    }

    .main-content {
        padding: 40px 20px;
    }

    .spec-value {
        font-size: 2rem;
    }
}