body {
    background-color: #FFFFFF;
    color: #121826;
    line-height: 1.6;
    scroll-behavior: smooth;
}

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.container {
    width: 100%;
    max-width: 1580px;
    margin: 0 auto;
    padding: 0 20px;
}

section {
    padding: 100px 0;
    position: relative;
    overflow: hidden;
}

/* 交替背景色 */
.bg-white {
    background-color: #FFFFFF;
}

.bg-light {
    background-color: #F5F7FA;
}

.section-title {
    text-align: center;
    margin-bottom: 60px;
    position: relative;
    z-index: 2;
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.section-title.visible {
    opacity: 1;
    transform: translateY(0);
}

.section-title h2 {
    font-size: 36px;
    margin-bottom: 20px;
    position: relative;
    display: inline-block;
    background: linear-gradient(90deg, #25D366, #128C7E);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    letter-spacing: -0.5px;
}

.section-title h2::after {
    content: '';
    position: absolute;
    bottom: -12px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, #25D366, #128C7E);
    border-radius: 3px;
}

.section-title p {
    color: #3E4759;
    max-width: 700px;
    margin: 0 auto;
    font-size: 18px;
    line-height: 1.7;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 14px 28px;
    border-radius: 50px;
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: none;
    font-size: 16px;
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
    transition: 0.6s;
    z-index: -1;
}

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

.btn-primary {
    background-color: #25D366;
    color: #FFFFFF;
    box-shadow: 0 4px 15px rgba(37, 211, 102, 0.3);
}

.btn-primary:hover {
    background-color: #128C7E;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(37, 211, 102, 0.4);
}

.btn-secondary {
    background-color: #FFFFFF;
    color: #25D366;
    border: 1px solid #25D366;
}

.btn-secondary:hover {
    background-color: #E8F5E9;
    transform: translateY(-2px);
    box-shadow: 0 6px 18px rgba(37, 211, 102, 0.15);
}

/* 导航锚点样式 */
.anchor-nav {
    position: sticky;
    top: 88px;
    background-color: #FFFFFF;
    box-shadow: 0 4px 20px rgba(0, 21, 51, 0.08);
    z-index: 900;
}

.anchor-links {
    display: flex;
    justify-content: center;
    gap: 10px;
    padding: 15px 0;
    flex-wrap: wrap;
}

.anchor-links a {
    padding: 8px 20px;
    border-radius: 50px;
    font-weight: 500;
    font-size: 15px;
    color: #3E4759;
}

.anchor-links a:hover,
.anchor-links a.active {
    background-color: #E8F5E9;
    color: #128C7E;
}

/* Hero区样式 */
.hero-filter {
    padding: 150px 0;
    background: linear-gradient(135deg, #128C7E, #25D366);
    color: #FFFFFF;
    position: relative;
    overflow: hidden;
    text-align: center;
}

.hero-filter::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 10% 20%, rgba(255,255,255,0.15) 0%, transparent 20%),
        radial-gradient(circle at 90% 70%, rgba(255,255,255,0.15) 0%, transparent 30%);
    animation: pulse 15s infinite;
}

@keyframes pulse {
    0% {
        background-size: 100% 100%, 120% 120%;
    }
    50% {
        background-size: 120% 120%, 100% 100%;
    }
    100% {
        background-size: 100% 100%, 120% 120%;
    }
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 1200px;
    margin: 0 auto;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 1s forwards 0.3s;
}

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

.hero-filter h1 {
    font-size: 52px;
    margin-bottom: 20px;
    line-height: 1.3;
    color: #FFFFFF;
}

.hero-filter p {
    font-size: 22px;
    max-width: 700px;
    margin: 0 auto 40px;
    opacity: 0.9;
}

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

.hero-filter .btn-primary {
    background-color: #FFFFFF;
    color: #25D366;
}

.hero-filter .btn-secondary {
    background-color: transparent;
    color: #FFFFFF;
    border-color: #FFFFFF;
}

.software-screenshot {
    margin-top: 60px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 15px 30px rgba(0,0,0,0.2);
    transform: translateY(30px) scale(0.95);
    opacity: 0;
    animation: slideUpScale 1s forwards 0.6s;
}

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

.software-screenshot img {
    width: 100%;
    display: block;
    transition: transform 0.5s ease;
}

.software-screenshot:hover img {
    transform: scale(1.03);
}

/* 软件简介样式 */
.intro-container {
    display: flex;
    align-items: center;
    gap: 60px;
}

.intro-text {
    flex: 1;
    opacity: 0;
    transform: translateX(-30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.intro-text.visible {
    opacity: 1;
    transform: translateX(0);
}

.intro-text p {
    font-size: 18px;
    color: #3E4759;
    line-height: 1.8;
    margin-bottom: 30px;
}

.intro-highlights {
    flex: 1;
}

.highlight-item {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    margin-bottom: 25px;
    opacity: 0;
    transform: translateX(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.highlight-item.visible {
    opacity: 1;
    transform: translateX(0);
}

.highlight-item:nth-child(1) { transition-delay: 0.1s; }
.highlight-item:nth-child(2) { transition-delay: 0.2s; }
.highlight-item:nth-child(3) { transition-delay: 0.3s; }
.highlight-item:nth-child(4) { transition-delay: 0.4s; }

.highlight-icon {
    width: 50px;
    height: 50px;
    border-radius: 10px;
    background-color: #E8F5E9;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    color: #25D366;
    font-size: 22px;
    transition: transform 0.3s ease, background-color 0.3s ease, color 0.3s ease;
}

.highlight-item:hover .highlight-icon {
    transform: scale(1.1);
    background-color: #25D366;
    color: #FFFFFF;
}

.highlight-content h3 {
    font-size: 18px;
    margin-bottom: 8px;
    color: #121826;
}

.highlight-content p {
    color: #3E4759;
}

/* 功能模块样式 */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.feature-card {
    background-color: #FFFFFF;
    padding: 35px;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 21, 51, 0.08);
    text-align: center;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    opacity: 0;
    transform: translateY(30px);
}

.feature-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.feature-card:nth-child(1) { transition: opacity 0.6s ease 0.1s, transform 0.6s ease 0.1s, box-shadow 0.3s ease, transform 0.3s ease; }
.feature-card:nth-child(2) { transition: opacity 0.6s ease 0.2s, transform 0.6s ease 0.2s, box-shadow 0.3s ease, transform 0.3s ease; }
.feature-card:nth-child(3) { transition: opacity 0.6s ease 0.3s, transform 0.6s ease 0.3s, box-shadow 0.3s ease, transform 0.3s ease; }
.feature-card:nth-child(4) { transition: opacity 0.6s ease 0.4s, transform 0.6s ease 0.4s, box-shadow 0.3s ease, transform 0.3s ease; }

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 10px 30px rgba(37, 211, 102, 0.15);
}

.feature-card-icon {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    background-color: #E8F5E9;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
    color: #25D366;
    font-size: 28px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.feature-card:hover .feature-card-icon {
    background-color: #25D366;
    color: #FFFFFF;
    transform: rotate(15deg);
}

.feature-card h3 {
    font-size: 20px;
    margin-bottom: 15px;
    color: #121826;
}

.feature-card p {
    color: #3E4759;
}

/* 系统要求样式 */
.system-requirements {
    background-color: #FFFFFF;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 21, 51, 0.08);
    overflow: hidden;
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.system-requirements.visible {
    opacity: 1;
    transform: translateY(0);
}

.requirements-row {
    display: flex;
    border-bottom: 1px solid rgba(0,0,0,0.05);
    transition: background-color 0.3s ease;
}

.requirements-row:hover {
    background-color: rgba(232, 245, 233, 0.5);
}

.requirements-row:last-child {
    border-bottom: none;
}

.req-label {
    flex: 0 0 200px;
    background-color: #E8F5E9;
    padding: 20px 30px;
    font-weight: 600;
    color: #128C7E;
}

.req-content {
    flex: 1;
    padding: 20px 30px;
    color: #3E4759;
}

/* 截图展示样式 */
.screenshots-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.screenshot-item {
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 21, 51, 0.08);
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    opacity: 0;
    transform: translateY(30px);
}

.screenshot-item.visible {
    opacity: 1;
    transform: translateY(0);
}

.screenshot-item:nth-child(1) { transition: opacity 0.6s ease 0.1s, transform 0.6s ease 0.1s, box-shadow 0.3s ease, transform 0.3s ease; }
.screenshot-item:nth-child(2) { transition: opacity 0.6s ease 0.2s, transform 0.6s ease 0.2s, box-shadow 0.3s ease, transform 0.3s ease; }
.screenshot-item:nth-child(3) { transition: opacity 0.6s ease 0.3s, transform 0.6s ease 0.3s, box-shadow 0.3s ease, transform 0.3s ease; }

.screenshot-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(37, 211, 102, 0.15);
}

.screenshot-item img {
    width: 100%;
    display: block;
    transition: transform 0.5s ease;
}

.screenshot-item:hover img {
    transform: scale(1.05);
}

.screenshot-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: rgba(0,0,0,0.7);
    color: #FFFFFF;
    padding: 10px 15px;
    font-size: 14px;
    text-align: center;
    transform: translateY(100%);
    transition: transform 0.3s ease;
}

.screenshot-item:hover .screenshot-caption {
    transform: translateY(0);
}

/* 截图模态框 */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0,0,0,0.9);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    padding: 20px;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.modal.active {
    display: flex;
    opacity: 1;
}

.modal-content {
    max-width: 90%;
    max-height: 90%;
    position: relative;
    transform: scale(0.9);
    transition: transform 0.3s ease;
}

.modal.active .modal-content {
    transform: scale(1);
}

.modal-image {
    max-width: 100%;
    max-height: 80vh;
    display: block;
    border-radius: 12px;
}

.modal-caption {
    color: #FFFFFF;
    text-align: center;
    margin-top: 15px;
}

.close-modal {
    position: absolute;
    top: -40px;
    right: 0;
    color: #FFFFFF;
    font-size: 30px;
    cursor: pointer;
    transition: transform 0.3s ease;
}

.close-modal:hover {
    transform: rotate(90deg);
}

/* 使用步骤样式 */
.steps-container {
    position: relative;
    max-width: 1000px;
    margin: 0 auto;
}

.steps-container::before {
    content: '';
    position: absolute;
    top: 50px;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #25D366, #128C7E);
    z-index: 1;
    transform: scaleX(0);
    transform-origin: left center;
    transition: transform 1.5s ease;
}

.steps-container.visible::before {
    transform: scaleX(1);
}

.steps {
    display: flex;
    justify-content: space-between;
    position: relative;
    z-index: 2;
}

.step-item {
    flex: 1;
    text-align: center;
    padding: 0 15px;
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.step-item.visible {
    opacity: 1;
    transform: translateY(0);
}

.step-item:nth-child(1) { transition-delay: 0.2s; }
.step-item:nth-child(2) { transition-delay: 0.4s; }
.step-item:nth-child(3) { transition-delay: 0.6s; }
.step-item:nth-child(4) { transition-delay: 0.8s; }

.step-number {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    background-color: #FFFFFF;
    border: 4px solid #25D366;
    color: #128C7E;
    font-size: 30px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
    position: relative;
    z-index: 2;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.step-item:hover .step-number {
    transform: scale(1.1);
    box-shadow: 0 0 0 8px rgba(37, 211, 102, 0.2);
}

.step-content h3 {
    font-size: 18px;
    margin-bottom: 10px;
    color: #121826;
}

.step-content p {
    color: #3E4759;
}

/* 下载与购买样式 */
.purchase-section {
    background-color: #E8F5E9;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 21, 51, 0.08);
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.purchase-section.visible {
    opacity: 1;
    transform: translateY(0);
}

.purchase-container {
    display: flex;
}

.cta-column {
    flex: 1;
    padding: 60px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
}

.cta-column h3 {
    font-size: 28px;
    margin-bottom: 25px;
    color: #128C7E;
}

.cta-buttons {
    display: flex;
    flex-direction: column;
    gap: 15px;
    width: 100%;
    max-width: 300px;
    margin-bottom: 30px;
}

.contact-column {
    flex: 1;
    background-color: #FFFFFF;
    padding: 60px;
}

.contact-methods {
    padding-top:20px;
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.contact-method {
    display: flex;
    align-items: center;
    gap: 15px;
    transition: transform 0.3s ease;
}

.contact-method:hover {
    transform: translateX(10px);
}

.contact-icon {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: #E8F5E9;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #25D366;
    font-size: 20px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.contact-method:hover .contact-icon {
    background-color: #25D366;
    color: #FFFFFF;
    transform: rotate(360deg);
}

.cont-info h4 {
    font-size: 18px;
    margin-bottom: 5px;
    color: #121826;
}

.cont-info p {
    color: #3E4759;
}

/* FAQ样式 */
.faq-grid {
    max-width: 900px;
    margin: 0 auto;
}

.faq-item {
    margin-bottom: 20px;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 21, 51, 0.08);
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.faq-item.visible {
    opacity: 1;
    transform: translateY(0);
}

.faq-item:nth-child(1) { transition-delay: 0.1s; }
.faq-item:nth-child(2) { transition-delay: 0.2s; }
.faq-item:nth-child(3) { transition-delay: 0.3s; }
.faq-item:nth-child(4) { transition-delay: 0.4s; }
.faq-item:nth-child(5) { transition-delay: 0.5s; }

.faq-question {
    background-color: #FFFFFF;
    padding: 20px 30px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    font-size: 18px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.faq-question:hover {
    background-color: #E8F5E9;
    color: #128C7E;
}

.faq-question i {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

.faq-answer {
    background-color: #FFFFFF;
    padding: 0 30px;
    max-height: 0;
    overflow: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.faq-item.active .faq-answer {
    padding: 0 30px 30px;
    max-height: 500px;
}

.faq-answer p {
    color: #3E4759;
    line-height: 1.7;
}

/* 底部CTA样式 */
.bottom-cta {
    text-align: center;
    padding: 80px 0;
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.bottom-cta.visible {
    opacity: 1;
    transform: translateY(0);
}

.bottom-cta p {
    font-size: 24px;
    font-weight: 600;
    color: #121826;
    margin-bottom: 30px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .hero-filter h1 {
        font-size: 42px;
    }
    
    .intro-container {
        flex-direction: column;
        gap: 40px;
    }
    
    .intro-text, .highlight-item {
        transform: none;
    }
    
    .purchase-container {
        flex-direction: column;
    }
    
    .steps {
        flex-wrap: wrap;
    }
    
    .step-item {
        flex: 0 0 50%;
        margin-bottom: 40px;
    }
    
    .steps-container::before {
        display: none;
    }
}

@media (max-width: 768px) {
    section {
        padding: 70px 0;
    }
    
    .hero-filter {
        padding: 100px 0;
    }
    
    .hero-filter h1 {
        font-size: 34px;
    }
    
    .hero-filter p {
        font-size: 18px;
    }
    
    .section-title h2 {
        font-size: 30px;
    }
    
    .section-title p {
        font-size: 16px;
    }
    
    .software-screenshot {
        margin-top: 40px;
        transform: translateY(20px);
    }
    
    .req-label {
        flex: 0 0 150px;
        padding: 15px;
    }
    
    .req-content {
        padding: 15px;
    }
    
    .step-item {
        flex: 0 0 100%;
    }
    
    .cta-column,
    .contact-column {
        padding: 40px 20px;
    }
    
    .bottom-cta p {
        font-size: 20px;
    }
}

@media (max-width: 576px) {
    .requirements-row {
        flex-direction: column;
    }
    
    .req-label {
        flex: none;
        width: 100%;
    }
    
    .screenshots-grid {
        grid-template-columns: 1fr;
    }
    
    .btn {
        width: 100%;
    }
    
    .hero-buttons {
        flex-direction: column;
        gap: 15px;
    }
}