:root {
    --primary-color: #4a90e2;
    --secondary-color: #34495e;
    --accent-color: #e74c3c;
    --background-color: #f5f7fa;
    --text-color: #333;
}

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

body {
    font-family: 'Poppins', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--background-color);
}

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

.navbar {
    background-color: rgba(255, 255, 255, 0.98);
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.08);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.navbar-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.8rem 0;
    height: 70px;
}

.navbar-brand {
    display: flex;
    align-items: center;
}

.navbar-brand img {
    height: 45px;
    transition: transform 0.3s ease;
}

.navbar-brand:hover img {
    transform: scale(1.05);
}

.navbar-nav {
    display: flex;
    list-style-type: none;
    align-items: center;
    margin: 0;
    padding: 0;
    gap: 2rem;
}

.nav-item {
    margin: 0;
    position: relative;
}

.nav-link {
    text-decoration: none;
    color: var(--secondary-color);
    font-weight: 600;
    font-size: 0.95rem;
    padding: 0.5rem 0;
    transition: all 0.3s ease;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width 0.3s ease;
}

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

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

.btn {
    display: inline-block;
    padding: 0.7rem 1.5rem;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    font-size: 0.9rem;
    border: none;
    cursor: pointer;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, #2563eb 100%);
    color: #fff;
    box-shadow: 0 4px 15px rgba(74, 144, 226, 0.25);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(74, 144, 226, 0.35);
}

.btn-secondary {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.btn-secondary:hover {
    background: var(--primary-color);
    color: #fff;
    transform: translateY(-2px);
}

.btn-light {
    background: rgba(255, 255, 255, 0.15);
    color: #fff;
    border: 2px solid rgba(255, 255, 255, 0.8);
}

.btn-light:hover {
    background: rgba(255, 255, 255, 0.25);
    color: #fff;
    transform: translateY(-2px);
    border-color: #fff;
    box-shadow: 0 6px 20px rgba(255, 255, 255, 0.2);
}

.hero {
    padding: 180px 0 120px;
    text-align: center;
    background: linear-gradient(135deg, #0ea5e9 0%, #3b82f6 50%, #60a5fa 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 320"><path fill="%23ffffff20" d="M0,128L48,144C96,160,192,192,288,186.7C384,181,480,139,576,149.3C672,160,768,224,864,229.3C960,235,1056,181,1152,149.3C1248,117,1344,107,1392,101.3L1440,96L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"></path></svg>');
    background-repeat: no-repeat;
    background-position: bottom;
    background-size: cover;
    opacity: 0.15;
    animation: wave 15s linear infinite;
}

@keyframes wave {
    0% {
        background-position-x: 0%;
    }
    100% {
        background-position-x: 100%;
    }
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero h1 {
    font-size: 4.5rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    background: linear-gradient(to right, #ffffff, #e2e8f0);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 2px 10px rgba(0,0,0,0.1);
    animation: fadeInUp 1s ease-out;
}

.hero-subtitle {
    font-size: 1.6rem;
    color: rgba(255, 255, 255, 0.95);
    margin-bottom: 1.5rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.6;
    animation: fadeInUp 1s ease-out 0.2s backwards;
}

.hero-features {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 2rem;
    animation: fadeInUp 1s ease-out 0.3s backwards;
}

@media (max-width: 768px) {
    .hero-features {
        font-size: 1rem;
        padding: 0 1.5rem;
    }
}

.hero-buttons {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    margin-top: 2.5rem;
    animation: fadeInUp 1s ease-out 0.4s backwards;
}

.hero-buttons .btn {
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
    letter-spacing: 0.5px;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-stat {
    display: flex;
    justify-content: center;
    gap: 5rem;
    margin-top: 5rem;
    animation: fadeInUp 1s ease-out 0.6s backwards;
}

.stat-item {
    color: white;
    text-align: center;
    position: relative;
}

.stat-item::after {
    content: '';
    position: absolute;
    right: -2.5rem;
    top: 50%;
    transform: translateY(-50%);
    width: 1px;
    height: 40px;
    background: rgba(255, 255, 255, 0.2);
}

.stat-item:last-child::after {
    display: none;
}

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    text-shadow: 0 2px 10px rgba(0,0,0,0.2);
}

.stat-label {
    font-size: 1rem;
    opacity: 0.9;
    font-weight: 500;
}

.section {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
}

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

.feature-item, .pricing-item, .faq-item {
    background-color: #fff;
    border-radius: 10px;
    padding: 2rem;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.feature-item:hover, .pricing-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

.feature-icon {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2.5rem;
    margin: 4rem auto;
    max-width: 1200px;
    position: relative;
}

.pricing-item {
    background: white;
    border-radius: 25px;
    padding: 3rem 2rem;
    text-align: center;
    position: relative;
    transition: all 0.4s ease;
    border: 1px solid rgba(0, 0, 0, 0.1);
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.pricing-item.popular {
    background: linear-gradient(135deg, #fff 0%, #f8fafc 100%);
    border: 2px solid var(--primary-color);
    transform: scale(1.05);
    z-index: 2;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
}

.pricing-item.popular::before {
    content: '推荐方案';
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary-color);
    color: white;
    padding: 0.5rem 2rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    white-space: nowrap;
    box-shadow: 0 4px 15px rgba(74, 144, 226, 0.3);
}

.pricing-features {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    margin: 2rem 0;
}

.pricing-item ul {
    margin: 0;
    padding: 0;
    list-style: none;
}

.pricing-item ul li {
    padding: 1rem 0;
    color: #666;
    border-bottom: 1px dashed rgba(0, 0, 0, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
}

.pricing-item ul li::before {
    content: '✓';
    color: var(--primary-color);
    margin-right: 10px;
    font-weight: bold;
    font-size: 1.1rem;
}

.price-tag {
    background: linear-gradient(135deg, var(--primary-color) 0%, #2563eb 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-size: 3.5rem;
    font-weight: 800;
    margin: 1.5rem 0;
    position: relative;
    display: inline-block;
}

.price-period {
    font-size: 1rem;
    color: #666;
    margin-left: 0.5rem;
    -webkit-text-fill-color: #666;
}

@keyframes float {
    0% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-10px);
    }
    100% {
        transform: translateY(0px);
    }
}

.pricing-item:hover {
    animation: float 3s ease-in-out infinite;
}

.pricing-item.popular:hover {
    animation: none;
    transform: scale(1.05);
}

.footer {
    background: linear-gradient(to right, #2c3e50, #3498db);
    color: #fff;
    padding: 80px 0 40px;
    position: relative;
    overflow: hidden;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(to right, var(--primary-color), #2563eb);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 4rem;
    position: relative;
}

.footer-section {
    position: relative;
}

.footer-section h4 {
    font-size: 1.2rem;
    margin-bottom: 1.5rem;
    position: relative;
    padding-bottom: 0.8rem;
}

.footer-section h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 3px;
    background: var(--primary-color);
    border-radius: 2px;
}

.footer-section p {
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.8;
}

.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    padding: 8px 0;
}

.footer-links a:hover {
    color: #fff;
    transform: translateX(5px);
}

.footer-links a i {
    margin-right: 0.5rem;
    font-size: 0.8rem;
    text-decoration: none;
}

.contact-info {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-bottom {
    margin-top: 4rem;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    color: rgba(255, 255, 255, 0.6);
}

.footer-bottom a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-bottom a:hover {
    color: #fff;
}

.footer-bottom img {
    vertical-align: middle;
    margin-right: 5px;
}

.beian-links {
    margin-top: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.8rem;
}

.beian-links a {
    display: inline-flex;
    align-items: center;
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: color 0.3s ease;
    font-size: 0.9rem;
}

.beian-links img {
    height: 22px;
    vertical-align: middle;
    margin-right: 5px;
}


.beian-separator {
    color: rgba(255, 255, 255, 0.4);
    margin: 0 0.5rem;
}

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
}

.social-links a {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    transition: all 0.3s ease;
}

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

.menu-toggle {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
}

@media (max-width: 768px) {
    .menu-toggle {
        display: block;
    }

    .navbar-nav {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background-color: #fff;
        box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    }

    .navbar-nav.active {
        display: flex;
    }

    .nav-item {
        margin: 0;
        text-align: center;
        padding: 1rem 0;
        border-top: 1px solid #eee;
    }

    .hero {
        padding: 140px 0 80px;
    }

    .hero h1 {
        font-size: 2.5rem;
        padding: 0 1rem;
    }

    .hero-subtitle {
        font-size: 1.2rem;
        padding: 0 1.5rem;
    }

    .hero-buttons {
        flex-direction: column;
        padding: 0 2rem;
    }

    .hero-buttons .btn {
        width: 100%;
        text-align: center;
    }

    .hero-stat {
        flex-direction: column;
        gap: 2.5rem;
        margin-top: 3rem;
    }

    .stat-item::after {
        display: none;
    }

    .stat-number {
        font-size: 2.5rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .nav-item .btn {
        display: inline-block;
        width: auto;
        margin: 5px;
    }

    .pricing-item {
        min-width: 100%;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .footer-section:nth-child(2),
    .footer-section:nth-child(3) {
        display: none;
    }

    .footer-section:nth-child(1),
    .footer-section:nth-child(4) {
        text-align: center;
        padding: 0 1rem;
    }

    .footer-section h4::after {
        left: 50%;
        transform: translateX(-50%);
    }

    .social-links {
        justify-content: center;
        margin-top: 1rem;
    }

    .contact-info {
        display: flex;
        flex-direction: column;
        align-items: center;
    }

    .contact-info li {
        justify-content: center;
        margin-bottom: 1rem;
    }

    .contact-info li i {
        margin-right: 0.5rem;
    }

    .footer-bottom {
        margin-top: 2rem;
        padding: 1.5rem 1rem;
    }

    .beian-links {
        flex-direction: column;
        gap: 0.6rem;
        margin-top: 0.8rem;
    }

    .beian-links a {
        font-size: 0.85rem;
        justify-content: center;
        padding: 0.3rem 0;
    }

    .beian-separator {
        display: none;
    }
}

.bg-gradient-primary {
    background: linear-gradient(87deg, #3b82f6 0, #0ea5e9 100%);
}

.mt-n6 {
    margin-top: -4rem;
}

.table th {
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.025em;
}

.btn {
    text-transform: uppercase;
    letter-spacing: 0.025em;
    font-size: 0.875rem;
    transition: all 0.15s ease;
}

.card {
    border-radius: 0.75rem;
}

.card-header {
    border-radius: 0.75rem 0.75rem 0 0 !important;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2.5rem;
    margin-top: 3rem;
}

.feature-item {
    background: rgba(255, 255, 255, 0.9);
    border-radius: 20px;
    padding: 2.5rem;
    text-align: center;
    position: relative;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: all 0.4s ease;
}

.feature-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), #2563eb);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    font-size: 2rem;
    color: white;
    position: relative;
}

.feature-icon::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    background: inherit;
    border-radius: 50%;
    z-index: -1;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        transform: scale(1);
        opacity: 0.5;
    }
    70% {
        transform: scale(1.1);
        opacity: 0;
    }
    100% {
        transform: scale(1);
        opacity: 0;
    }
}

.feature-item h3 {
    font-size: 1.5rem;
    color: var(--secondary-color);
    margin-bottom: 1rem;
}

.feature-item p {
    color: #666;
    line-height: 1.6;
}

.section-title {
    text-align: center;
    margin-bottom: 4rem;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: var(--primary-color);
    margin: 1rem auto;
    border-radius: 2px;
}

.section-subtitle {
    text-align: center;
    color: #666;
    max-width: 700px;
    margin: -2rem auto 3rem;
    font-size: 1.1rem;
}

.faq-item {
    background: #fff;
    border-radius: 15px;
    padding: 2rem;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.faq-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-color), #2563eb);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.faq-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

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

.faq-item h3 {
    color: var(--secondary-color);
    font-size: 1.3rem;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
}

.faq-item h3::before {
    content: '?';
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    background: linear-gradient(135deg, var(--primary-color), #2563eb);
    border-radius: 50%;
    color: white;
    font-size: 0.9rem;
    margin-right: 1rem;
    flex-shrink: 0;
}

.faq-item p {
    color: #666;
    line-height: 1.8;
    margin: 0;
}

.contact-info {
    list-style: none;
    padding: 0;
    margin: 0;
}

.contact-info li {
    display: flex;
    align-items: center;
    margin-bottom: 1.2rem;
    color: rgba(255, 255, 255, 0.8);
}

.contact-info li i {
    width: 20px;
    margin-right: 1rem;
    color: var(--primary-color);
    text-decoration: none !important;
}

.contact-info li a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: color 0.3s ease;
}

.contact-info li a:hover {
    color: #fff;
}

.contact-info li i,
.social-links a i,
.footer-links a i {
    text-decoration: none !important;
    border-bottom: none !important;
}

.contact-info li i {
    width: 20px;
    margin-right: 1rem;
    color: var(--primary-color);
}

.social-links a {
    text-decoration: none !important;
    border-bottom: none !important;
}

.social-links a i {
    font-size: 1.2rem;
}

.footer-links a i {
    margin-right: 0.8rem;
    font-size: 0.9rem;
    width: 20px;
    text-align: center;
}

.fas, .fab, .far {
    text-decoration: none !important;
    border-bottom: none !important;
}

.btn i {
    text-decoration: none !important;
    margin-right: 0.5rem;
}

.hero-slider {
    position: relative;
    overflow: hidden;
    margin-bottom: 2rem;
}

.slide {
    opacity: 0;
    visibility: hidden;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    transition: opacity 0.5s ease-in-out, visibility 0.5s ease-in-out;
}

.slide.active {
    opacity: 1;
    visibility: visible;
    position: relative;
}

.slide h1 {
    transform: translateY(20px);
    opacity: 0;
    animation: slideUp 0.8s forwards;
}

.slide.active h1 {
    animation: slideUp 0.8s forwards;
}

.slide.active .hero-subtitle {
    animation: slideUp 0.8s 0.3s forwards;
}

@keyframes slideUp {
    from {
        transform: translateY(20px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.slider-dots {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin: 2rem 0;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    cursor: pointer;
    transition: all 0.3s ease;
}

.dot.active {
    background: #fff;
    transform: scale(1.2);
    box-shadow: 0 0 10px rgba(255, 255, 255, 0.5);
}

@media (max-width: 768px) {
    .slide h1 {
        font-size: 2rem;
    }
    
    .slide .hero-subtitle {
        font-size: 1rem;
    }
    
    .slider-dots {
        margin: 1rem 0;
    }
}