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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: #333;
    background: linear-gradient(135deg, #0f0f23 0%, #1a1a2e 50%, #16213e 100%);
    min-height: 100vh;
}

header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(15, 15, 35, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

nav {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo a {
    color: #00d4ff;
    font-size: 1.5rem;
    font-weight: bold;
    text-decoration: none;
    transition: color 0.3s ease;
}

.logo a:hover {
    color: #00ff88;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-links a {
    color: #fff;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-links a:hover {
    color: #00d4ff;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: #00d4ff;
    transition: width 0.3s ease;
}

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

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

.hamburger span {
    width: 25px;
    height: 3px;
    background: #fff;
    margin: 4px 0;
    transition: 0.3s;
}

#hero {
    padding: 150px 20px 100px;
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 60px;
    animation: fadeInUp 1s ease;
}

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

.hero-content {
    flex: 1;
}

.hero-content h1 {
    font-size: 3rem;
    color: #fff;
    margin-bottom: 20px;
    line-height: 1.2;
    background: linear-gradient(90deg, #00d4ff, #00ff88);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-content p {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 30px;
    max-width: 600px;
}

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

.btn-primary, .btn-secondary {
    padding: 15px 30px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    display: inline-block;
}

.btn-primary {
    background: linear-gradient(90deg, #00d4ff, #00ff88);
    color: #0f0f23;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0, 212, 255, 0.4);
}

.btn-secondary {
    border: 2px solid rgba(255, 255, 255, 0.3);
    color: #fff;
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: #00d4ff;
    transform: translateY(-3px);
}

.hero-image {
    flex: 1;
    text-align: center;
}

.hero-image img {
    max-width: 100%;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    transition: transform 0.3s ease;
}

.hero-image img:hover {
    transform: scale(1.05);
}

section {
    padding: 80px 20px;
}

section h2 {
    text-align: center;
    font-size: 2.5rem;
    color: #fff;
    margin-bottom: 50px;
    background: linear-gradient(90deg, #00d4ff, #00ff88);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

#features {
    background: rgba(0, 0, 0, 0.2);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.features-grid article {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 20px;
    padding: 40px 30px;
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.features-grid article:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-10px);
    border-color: rgba(0, 212, 255, 0.3);
}

.feature-icon {
    width: 100px;
    height: 100px;
    margin: 0 auto 20px;
    border-radius: 50%;
    overflow: hidden;
    border: 3px solid rgba(0, 212, 255, 0.3);
    transition: border-color 0.3s ease;
}

.features-grid article:hover .feature-icon {
    border-color: #00d4ff;
}

.feature-icon img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.features-grid article h3 {
    color: #fff;
    font-size: 1.3rem;
    margin-bottom: 15px;
}

.features-grid article p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.95rem;
    line-height: 1.8;
}

#services {
    background: rgba(0, 0, 0, 0.1);
}

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

.service-item {
    display: flex;
    gap: 40px;
    align-items: center;
    margin-bottom: 50px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 20px;
    padding: 30px;
    transition: all 0.3s ease;
}

.service-item:hover {
    background: rgba(255, 255, 255, 0.06);
}

.service-item img {
    flex: 1;
    max-width: 50%;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    transition: transform 0.3s ease;
}

.service-item:hover img {
    transform: scale(1.03);
}

.service-content {
    flex: 1;
}

.service-content h3 {
    color: #fff;
    font-size: 1.5rem;
    margin-bottom: 15px;
}

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

.service-content ul {
    list-style: none;
}

.service-content li {
    color: rgba(255, 255, 255, 0.8);
    padding: 8px 0;
    padding-left: 25px;
    position: relative;
}

.service-content li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #00ff88;
    font-weight: bold;
}

#faq {
    background: rgba(0, 0, 0, 0.2);
}

.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 15px;
    margin-bottom: 15px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.faq-question {
    width: 100%;
    padding: 25px;
    background: transparent;
    border: none;
    color: #fff;
    font-size: 1.1rem;
    font-weight: 500;
    text-align: left;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background 0.3s ease;
}

.faq-question:hover {
    background: rgba(255, 255, 255, 0.05);
}

.faq-question::after {
    content: '+';
    font-size: 1.5rem;
    color: #00d4ff;
    transition: transform 0.3s ease;
}

.faq-question.active::after {
    transform: rotate(45deg);
}

.faq-answer {
    padding: 0 25px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
}

.faq-answer.active {
    padding: 0 25px 25px;
    max-height: 500px;
}

.faq-answer p {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 15px;
    line-height: 1.8;
}

.faq-answer ol, .faq-answer ul {
    color: rgba(255, 255, 255, 0.8);
    padding-left: 25px;
    margin-bottom: 15px;
}

.faq-answer li {
    margin-bottom: 10px;
}

#cta {
    text-align: center;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.2) 0%, rgba(0, 255, 136, 0.2) 100%);
    padding: 100px 20px;
}

.cta-content h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.cta-content p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 1.2rem;
    margin-bottom: 40px;
}

.cta-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 40px;
}

.qr-code {
    display: inline-block;
    background: rgba(255, 255, 255, 0.1);
    padding: 20px;
    border-radius: 20px;
    border: 2px solid rgba(0, 212, 255, 0.3);
}

.qr-code img {
    width: 200px;
    height: 200px;
    border-radius: 10px;
    margin-bottom: 15px;
}

.qr-code p {
    color: #fff;
    font-weight: 500;
    margin: 0;
}

footer {
    background: rgba(0, 0, 0, 0.3);
    padding: 60px 20px 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h3 {
    color: #00d4ff;
    font-size: 1.2rem;
    margin-bottom: 20px;
}

.footer-section p {
    color: rgba(255, 255, 255, 0.6);
    line-height: 1.8;
}

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

.footer-section li {
    margin-bottom: 10px;
}

.footer-section a {
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section a:hover {
    color: #00d4ff;
}

.footer-bottom {
    max-width: 1200px;
    margin: 0 auto;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.9rem;
}

.footer-links {
    display: flex;
    gap: 20px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.5);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: #00d4ff;
}

@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: rgba(15, 15, 35, 0.98);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 40px;
        transition: left 0.3s ease;
    }

    .nav-links.active {
        left: 0;
    }

    .hamburger {
        display: flex;
    }

    .hamburger.active span:nth-child(1) {
        transform: rotate(-45deg) translate(-5px, 6px);
    }

    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }

    .hamburger.active span:nth-child(3) {
        transform: rotate(45deg) translate(-5px, -6px);
    }

    #hero {
        flex-direction: column;
        text-align: center;
        gap: 40px;
        padding: 120px 20px 60px;
    }

    .hero-content h1 {
        font-size: 2rem;
    }

    .hero-content p {
        margin: 0 auto 30px;
    }

    .hero-image img {
        max-width: 100%;
    }

    section h2 {
        font-size: 1.8rem;
    }

    .service-item {
        flex-direction: column;
    }

    .service-item.reverse {
        flex-direction: column;
    }

    .service-item img {
        max-width: 100%;
    }

    .faq-question {
        font-size: 1rem;
        padding: 20px;
    }

    .cta-content h2 {
        font-size: 1.8rem;
    }

    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-content h1 {
        font-size: 1.5rem;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .btn-primary, .btn-secondary {
        width: 100%;
        text-align: center;
    }

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

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
}