/* 全局样式 */
:root {
    --primary-color: #00e5b3;
    --secondary-color: #0a1929;
    --text-color: #e0e0e0;
    --card-bg: rgba(255, 255, 255, 0.05);
    --card-hover-bg: rgba(255, 255, 255, 0.1);
    --border-color: rgba(255, 255, 255, 0.1);
}

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

body.dark-theme {
    background: url('bg.png') no-repeat center center fixed;
    background-size: cover;
    color: var(--text-color);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
}

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

/* 头部样式 */
.header {
    padding: 20px 0;
    background: var(--header-bg);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

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

.logo {
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-icon {
    width: 40px;
    height: 30px;
    border-radius: 50%;
    object-fit: cover;
    border: 1px solid var(--primary-color);
}

.logo span {
    font-size: 1.8em;
    font-weight: 600;
    background: linear-gradient(120deg, var(--primary-color), #00ffff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: 1px;
}

.header nav {
    display: flex;
    gap: 30px;
    align-items: center;
}

.header nav .email-contact {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--primary-color);
    font-size: 1.1em;
    padding: 10px 20px;
    border-radius: 25px;
    transition: all 0.3s ease;
    background: rgba(0, 229, 179, 0.15);
    border: 1px solid rgba(0, 229, 179, 0.3);
    margin-left: auto;
    box-shadow: 0 2px 8px rgba(0, 229, 179, 0.1);
}

.header nav .email-contact i {
    font-size: 1.1em;
}

.header nav .email-contact:hover {
    background: rgba(0, 229, 179, 0.25);
    transform: translateY(-2px);
    border-color: var(--primary-color);
    box-shadow: 0 4px 12px rgba(0, 229, 179, 0.2);
}
.header nav a {
    color: var(--text-color);
    text-decoration: none;
    font-size: 1.1em;
    font-weight: 500;
    padding: 8px 16px;
    border-radius: 20px;
    transition: all 0.3s ease;
}

.header nav a:hover {
    color: var(--primary-color);
    background: rgba(255, 255, 255, 0.1);
}

.header {
    border-bottom: 1px solid var(--border-color);
    backdrop-filter: blur(10px);
    position: fixed;
    width: 100%;
    z-index: 1000;
    background: rgba(10, 25, 41, 0.8);
}

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

.logo img {
    height: 40px;
}

.header nav a {
    color: var(--text-color);
    text-decoration: none;
    margin-left: 30px;
    transition: color 0.3s;
}

.header nav a:hover, 
.header nav a.active {
    color: var(--primary-color);
}

/* 英雄区域样式 */
.hero-section {
    padding: 160px 0 80px;
    text-align: center;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 100vh;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
}

.hero-section .container {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    gap: 50px;
    max-width: 1400px;
}

.hero-section h1 {
    font-size: 3em;
    margin-bottom: 20px;
    background: linear-gradient(120deg, var(--primary-color), #00ffff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-section .subtitle {
    font-size: 1.2em;
    margin-bottom: 20px;
}

.slogan-container {
    margin-bottom: 40px;
}

.slogan {
    font-size: 1.4em;
    color: var(--primary-color);
    text-align: center;
    min-height: 1.6em;
    border-right: 2px solid var(--primary-color);
    white-space: nowrap;
    overflow: hidden;
    animation: typing 3.5s steps(40, end),
             blink-caret .75s step-end infinite;
}

@keyframes typing {
    from { width: 0 }
    to { width: 100% }
}

@keyframes blink-caret {
    from, to { border-color: transparent }
    50% { border-color: var(--primary-color) }
}

/* 特性网格 */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.feature-item {
    background: var(--card-bg);
    padding: 20px;
    border-radius: 10px;
    transition: transform 0.3s ease, background 0.3s ease;
    transform-style: preserve-3d;
    perspective: 1000px;
}

.feature-item:hover {
    background: var(--card-hover-bg);
    transform: translateY(-5px) rotateX(10deg);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.feature-item i {
    font-size: 2em;
    color: var(--primary-color);
    margin-bottom: 15px;
}

/* 下载部分 */
.download-section {
    padding: 80px 0;
    background: rgba(10, 25, 41, 0.6);
}

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

.download-header h2 {
    font-size: 2.5em;
    margin-bottom: 20px;
}

.download-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 30px;
    margin: 0 auto;
    max-width: 1400px;
}

.download-card {
    background: var(--card-bg);
    padding: 30px;
    border-radius: 15px;
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.download-card:hover {
    transform: translateY(-10px);
    background: var(--card-hover-bg);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

.download-card i {
    font-size: 3em;
    color: var(--primary-color);
    margin-bottom: 20px;
    transition: transform 0.3s ease;
}

.download-card:hover i {
    transform: scale(1.1);
}

.download-card h3 {
    font-size: 1.5em;
    margin-bottom: 10px;
}

.download-card p {
    color: #888;
    margin-bottom: 20px;
    font-size: 0.9em;
}

.download-btn {
    background: linear-gradient(45deg, var(--primary-color), #00ffff);
    color: var(--secondary-color);
    border: none;
    padding: 12px 24px;
    border-radius: 25px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
    width: 100%;
    text-decoration: none;
}

.download-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 5px 15px rgba(0, 229, 179, 0.3);
}

/* 定价部分 */
.pricing-section {
    padding: 80px 0;
}

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

.pricing-header h2 {
    font-size: 2.5em;
    margin-bottom: 20px;
}

.user-count {
    font-size: 1.8em;
    color: var(--primary-color);
    margin: 30px 0;
    text-align: center;
    opacity: 0;
    transform: translateY(20px);
}

.user-count.visible {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.user-count span {
    font-weight: bold;
    margin: 0 5px;
    display: inline-block;
    animation: countUp 2s ease-out forwards;
}

@keyframes countUp {
    from {
        transform: translateY(100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.pricing-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-bottom: 60px;
}

.pricing-card {
    background: var(--card-bg);
    border-radius: 15px;
    padding: 30px;
    text-align: center;
    border: 1px solid var(--border-color);
}

.pricing-card.featured {
    border: 2px solid var(--primary-color);
}

.card-badge {
    position: absolute;
    top: -12px;
    right: 20px;
    background: var(--primary-color);
    color: var(--secondary-color);
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.9em;
    font-weight: bold;
}

.card-header h3 {
    font-size: 1.8em;
    margin-bottom: 20px;
    color: var(--primary-color);
}

.price .amount {
    font-size: 2.5em;
    font-weight: bold;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.price .unit {
    font-size: 0.4em;
    color: var(--text-color);
}

.price .total {
    font-size: 1.1em;
    color: var(--text-color);
    opacity: 0.8;
}

.subscribe-btn {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    padding: 12px 30px;
    border-radius: 25px;
    font-size: 1.1em;
    cursor: pointer;
    margin-top: 20px;
    width: 100%;
}

.subscribe-btn:hover {
    background: var(--primary-color);
    color: var(--secondary-color);
}

.subscribe-btn.primary {
    background: var(--primary-color);
    color: var(--secondary-color);
}

.subscribe-btn.primary:hover {
    background: transparent;
    color: var(--primary-color);
}

/* 支付方式 */
.payment-methods {
    text-align: center;
}

.payment-methods h3 {
    margin-bottom: 20px;
}

.payment-icons {
    display: flex;
    justify-content: center;
    gap: 30px;
}

.payment-icons i {
    font-size: 2.5em;
    color: var(--text-color);
    transition: color 0.3s;
}

.payment-icons i:hover {
    color: var(--primary-color);
}

/* 页脚 */
.footer {
    background-color: #1a1a1a;
    padding: 20px 0;
    margin-top: 60px;
}

.footer .container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.footer-links {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    margin-top: 20px;
    margin-bottom: 20px;
}

.footer-links-vertical {
    flex-direction: column;
    align-items: center;
    gap: 15px;
}

.contact-title h3 {
    font-size: 22px;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.contact-email {
    display: flex;
    justify-content: center;
    margin-top: 5px;
}

.email-link {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 18px;
    color: var(--primary-color) !important;
    transition: opacity 0.3s;
}

.email-link:hover {
    opacity: 0.8;
}

.email-link i {
    font-size: 20px;
}

.footer-links a {
    color: #999;
    text-decoration: none;
    font-size: 16px;
    transition: color 0.3s;
}

.footer-links a:hover {
    color: var(--primary-color);
}

.footer-info {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    text-align: center;
}

.copyright {
    color: #666;
    font-size: 14px;
}

.beian-links {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
    justify-content: center;
}

.beian-links a {
    color: #666;
    text-decoration: none;
    font-size: 12px;
    display: flex;
    align-items: center;
    gap: 5px;
}

.beian-links img {
    height: 14px;
    width: auto;
}
.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-col h4 {
    color: var(--primary-color);
    margin-bottom: 20px;
}

.footer-col a {
    display: block;
    color: var(--text-color);
    text-decoration: none;
    margin-bottom: 10px;
    transition: color 0.3s;
}

.footer-col a:hover {
    color: var(--primary-color);
}

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

.social-links a {
    color: var(--text-color);
    margin-left: 20px;
    font-size: 1.2em;
    transition: color 0.3s;
}

.social-links a:hover {
    color: var(--primary-color);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .header {
        padding: 15px 0;
        transition: transform 0.3s ease;
    }

    .header.hidden {
        transform: translateY(-100%);
    }

    .header .container {
        flex-wrap: nowrap;
    }

    .header nav {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: rgba(10, 25, 41, 0.95);
        flex-direction: column;
        gap: 15px;
        width: 100%;
        padding: 20px;
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
        z-index: 999;
        border-bottom: 1px solid var(--border-color);
    }

    .header nav.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .header nav a {
        margin-left: 0;
        text-align: center;
    }

    .header nav .email-contact {
        margin: 0;
        width: 100%;
        justify-content: center;
        font-size: 0.9em;
        padding: 8px 15px;
    }

    .logo span {
        font-size: 1.5em;
    }

    .hero-section {
        padding: 120px 0 60px;
        min-height: auto;
        margin-top: 60px;
    }

    .hero-section .container {
        flex-direction: column;
        text-align: center;
        gap: 30px;
        padding: 0 20px;
        max-width: 100%;
    }

    .hero-section h1 {
        font-size: 2em;
        line-height: 1.4;
        margin-bottom: 15px;
    }

    .hero-section .subtitle {
        font-size: 1.1em;
        line-height: 1.6;
        padding: 0;
        margin-bottom: 25px;
    }

    .hero-image {
        max-width: 85%;
        margin: 20px auto;
        display: block;
        height: auto;
        border-radius: 10px;
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    }

    .feature-grid {
        grid-template-columns: 1fr;
        gap: 25px;
        margin-top: 40px;
        padding: 0 15px;
    }

    .feature-item {
        padding: 25px;
        text-align: center;
        background: rgba(255, 255, 255, 0.08);
        border: 1px solid rgba(255, 255, 255, 0.1);
    }

    .download-cards {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }

    .pricing-cards {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin: 0 auto 40px;
    }

    .footer-links {
        flex-direction: column;
        gap: 20px;
        align-items: center;
    }

    .left-links, .right-links {
        width: 100%;
        justify-content: center;
    }

    .beian-links {
        flex-direction: column;
        align-items: center;
        gap: 10px;
    }
    
    .download-section {
        padding: 60px 0;
    }
    
    .download-header h2 {
        font-size: 2em;
    }
    
    .pricing-section {
        padding: 60px 0;
    }
    
    .pricing-header h2 {
        font-size: 2em;
    }
}

@media (max-width: 480px) {
    .header .container {
        flex-direction: column;
        gap: 15px;
    }

    .header nav a {
        font-size: 1em;
        padding: 6px 12px;
    }

    .feature-grid {
        grid-template-columns: 1fr;
        gap: 15px;
        margin-top: 30px;
    }

    .feature-item {
        padding: 15px 10px;
    }

    .feature-item i {
        font-size: 1.8em;
        margin-bottom: 10px;
    }

    .feature-item p {
        font-size: 0.9em;
    }

    .hero-section h1 {
        font-size: 1.8em;
    }

    .hero-section .subtitle {
        font-size: 1em;
    }
    
    .slogan {
        font-size: 1.1em;
    }

    .download-cards {
        grid-template-columns: 1fr;
    }

    .download-card {
        padding: 20px;
    }

    .download-card h3 {
        font-size: 1.3em;
    }

    .download-card p {
        font-size: 0.85em;
    }

    .download-btn {
        padding: 10px 20px;
        font-size: 0.9em;
    }

    .pricing-card {
        padding: 20px;
    }

    .footer-grid {
        grid-template-columns: 1fr;
    }
    
    .payment-icons {
        gap: 15px;
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .payment-icons i {
        font-size: 2em;
    }
    
    .footer .container {
        padding: 0 15px;
    }
    
    .download-section {
        padding: 60px 0;
    }
    
    .download-header h2 {
        font-size: 2em;
    }
    
    .pricing-section {
        padding: 60px 0;
    }
    
    .pricing-header h2 {
        font-size: 2em;
    }
}
.faq-section {
    padding: 100px 0;
    background-color: rgba(10, 25, 41, 0.9);
    color: var(--text-color);
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.faq-item {
    text-align: left;
    margin-bottom: 40px;
    padding: 30px;
    border-radius: 10px;
    background-color: rgba(255, 255, 255, 0.12);
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.15);
    transition: all 0.3s ease;
    max-width: 800px;
    width: 100%;
    transform: translateY(0);
}

.faq-item:hover {
    background-color: rgba(255, 255, 255, 0.12);
    transform: translateY(-6px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.25);
}

.faq-item h2 {
    font-size: 2.2em;
    margin-bottom: 15px;
    color: var(--primary-color);
    transition: color 0.3s ease;
}

.faq-item p {
    font-size: 1.2em;
    line-height: 1.7;
    color: var(--text-color);
}

@media (max-width: 768px) {
    .faq-section {
        padding: 60px 0;
    }

    .faq-item {
        padding: 20px;
    }

    .faq-item h2 {
        font-size: 1.8em;
    }

    .faq-item p {
        font-size: 1.1em;
    }
}

@media (max-width: 480px) {
    .faq-item h2 {
        font-size: 1.6em;
    }

    .faq-item p {
        font-size: 1em;
    }
}
.faq-item {
    text-align: left;
    margin-bottom: 40px;
    padding: 30px;
    border-radius: 10px;
    background-color: rgba(10, 25, 41, 0.8);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
    transition: all 0.3s ease;
    max-width: 800px;
    width: 100%;
}
.faq-item:hover {
    background-color: rgba(255, 255, 255, 0.15);
    transform: translateY(-8px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
}
.faq-item p {
    font-size: 1.1em;
    line-height: 1.6;
    color: var(--text-color);
}

.faq-item ol {
    padding-left: 20px;
}

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

@media (max-width: 768px) {
    .faq-section {
        padding: 40px 0;
    }

    .faq-item {
        padding: 15px;
    }

    .faq-item h2 {
        font-size: 1.5em;
    }

    .faq-item p {
        font-size: 1em;
    }
}

@media (max-width: 480px) {
    .faq-item h2 {
        font-size: 1.3em;
    }

    .faq-item p {
        font-size: 0.9em;
    }
}
@media (min-width: 769px) and (max-width: 1024px) {
    .container {
        max-width: 900px;
    }

    .hero-section {
        padding: 120px 0 60px;
    }

    .hero-section .container {
        gap: 30px;
    }

    .hero-section h1 {
        font-size: 2.5em;
    }

    .hero-image {
        max-width: 70%;
    }

    .feature-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 25px;
    }

    .download-cards {
        grid-template-columns: repeat(3, 1fr);
        gap: 20px;
    }

    .pricing-cards {
        grid-template-columns: repeat(2, 1fr);
        gap: 25px;
    }
}

@media (max-width: 480px) {
    .header .container {
        flex-direction: column;
        gap: 15px;
    }

    .header nav a {
        font-size: 1em;
        padding: 6px 12px;
    }

    .feature-grid {
        grid-template-columns: 1fr;
        gap: 15px;
        margin-top: 30px;
    }

    .feature-item {
        padding: 15px 10px;
    }

    .feature-item i {
        font-size: 1.8em;
        margin-bottom: 10px;
    }

    .feature-item p {
        font-size: 0.9em;
    }

    .hero-section h1 {
        font-size: 1.8em;
    }

    .hero-section .subtitle {
        font-size: 1em;
    }
    
    .slogan {
        font-size: 1.1em;
    }

    .download-cards {
        grid-template-columns: 1fr;
    }

    .download-card {
        padding: 20px;
    }

    .download-card h3 {
        font-size: 1.3em;
    }

    .download-card p {
        font-size: 0.85em;
    }

    .download-btn {
        padding: 10px 20px;
        font-size: 0.9em;
    }

    .pricing-card {
        padding: 20px;
    }

    .footer-grid {
        grid-template-columns: 1fr;
    }
    
    .payment-icons {
        gap: 15px;
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .payment-icons i {
        font-size: 2em;
    }
    
    .footer .container {
        padding: 0 15px;
    }
    
    .download-section {
        padding: 60px 0;
    }
    
    .download-header h2 {
        font-size: 2em;
    }
    
    .pricing-section {
        padding: 60px 0;
    }
    
    .pricing-header h2 {
        font-size: 2em;
    }
}
.faq-section {
    padding: 100px 0;
    background-color: rgba(10, 25, 41, 0.9);
    color: var(--text-color);
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.faq-item {
    text-align: left;
    margin-bottom: 40px;
    padding: 30px;
    border-radius: 10px;
    background-color: rgba(255, 255, 255, 0.12);
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.15);
    transition: all 0.3s ease;
    max-width: 800px;
    width: 100%;
    transform: translateY(0);
}

.faq-item:hover {
    background-color: rgba(255, 255, 255, 0.12);
    transform: translateY(-6px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.25);
}

.faq-item h2 {
    font-size: 2.2em;
    margin-bottom: 15px;
    color: var(--primary-color);
    transition: color 0.3s ease;
}

.faq-item p {
    font-size: 1.2em;
    line-height: 1.7;
    color: var(--text-color);
}

@media (max-width: 768px) {
    .faq-section {
        padding: 60px 0;
    }

    .faq-item {
        padding: 20px;
    }

    .faq-item h2 {
        font-size: 1.8em;
    }

    .faq-item p {
        font-size: 1.1em;
    }
}

@media (max-width: 480px) {
    .faq-item h2 {
        font-size: 1.6em;
    }

    .faq-item p {
        font-size: 1em;
    }
}
.faq-item {
    text-align: left;
    margin-bottom: 40px;
    padding: 30px;
    border-radius: 10px;
    background-color: rgba(10, 25, 41, 0.8);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
    transition: all 0.3s ease;
    max-width: 800px;
    width: 100%;
}
.faq-item:hover {
    background-color: rgba(255, 255, 255, 0.15);
    transform: translateY(-8px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
}
.faq-item p {
    font-size: 1.1em;
    line-height: 1.6;
    color: var(--text-color);
}

.faq-item ol {
    padding-left: 20px;
}

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

@media (max-width: 768px) {
    .faq-section {
        padding: 40px 0;
    }

    .faq-item {
        padding: 15px;
    }

    .faq-item h2 {
        font-size: 1.5em;
    }

    .faq-item p {
        font-size: 1em;
    }
}

@media (max-width: 480px) {
    .faq-item h2 {
        font-size: 1.3em;
    }

    .faq-item p {
        font-size: 0.9em;
    }
}
.hero-image {
    max-width: 80%;
    height: auto;
    transition: all 0.3s ease;
    object-fit: contain;
}