/* 重置和基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
    font-size: 14px;
}

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

/* 导航栏样式 */
.navbar {
    background-color: #fff;
    border-bottom: 1px solid #e0e0e0;
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 0;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px;
    height: 60px;
}

.nav-brand {
    font-size: 24px;
    font-weight: 600;
    color: #333;
    display: flex;
    align-items: center;
    gap: 10px;
}

.brand-logo {
    height: 32px;
    width: 32px;
    object-fit: contain;
}

.brand-text {
    color: #4a90e2;
    text-decoration: none;
}

.nav-menu {
    display: flex;
    align-items: center;
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 20px;
    cursor: pointer;
    color: #333;
}

.nav-list {
    display: flex;
    list-style: none;
    gap: 30px;
    align-items: center;
}

.nav-list a {
    text-decoration: none;
    color: #666;
    font-weight: 400;
    transition: color 0.3s ease;
    padding: 8px 0;
}

.nav-list a:hover {
    color: #4a90e2;
}

.lang-toggle {
    color: #4a90e2 !important;
    font-weight: 500;
}

/* 主要内容区域 */
.main-content {
    min-height: calc(100vh - 60px);
}

/* Hero 区域样式 */
.hero-section {
    background-color: #fafafa;
    padding: 80px 0;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    width: 100%;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-left {
    text-align: left;
}

.hero-right {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-title {
    font-size: 64px;
    font-weight: 300;
    margin-bottom: 20px;
    color: #333;
    line-height: 1.1;
}

.title-snip {
    color: #4a90e2;
}

.title-and {
    color: #666;
    margin: 0 10px;
}

.title-paste {
    color: #4a90e2;
}

.hero-subtitle {
    font-size: 18px;
    color: #666;
    margin-bottom: 40px;
    font-weight: 400;
}

.hero-description {
    max-width: 500px;
    background-color: #fff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.hero-description ul {
    list-style: none;
}

.hero-description li {
    margin-bottom: 10px;
    position: relative;
    padding-left: 20px;
}

.hero-description li:before {
    content: "•";
    color: #4a90e2;
    position: absolute;
    left: 0;
    font-weight: bold;
}

.hero-description ul ul {
    margin-top: 10px;
    margin-left: 20px;
}

/* 快速下载区域 */
.quick-download-section {
    padding: 50px 40px;
    background: linear-gradient(135deg, #4a90e2, #357abd);
    border-radius: 16px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.12);
    text-align: center;
    width: 100%;
    max-width: 450px;
    position: relative;
    overflow: hidden;
}

.quick-download-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0.05) 100%);
    pointer-events: none;
}

.download-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 20px auto;
    display: block;
    filter: drop-shadow(0 4px 8px rgba(0,0,0,0.3));
}

.download-icon svg {
    width: 100%;
    height: 100%;
}

.download-title {
    font-size: 24px;
    font-weight: 700;
    color: white;
    margin-bottom: 15px;
    text-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.download-description {
    font-size: 16px;
    color: rgba(255,255,255,0.9);
    margin-bottom: 30px;
    line-height: 1.5;
}

.main-download-btn {
    background: white;
    color: #4a90e2;
    border: none;
    padding: 18px 36px;
    border-radius: 12px;
    font-size: 18px;
    font-weight: 700;
    cursor: pointer;
    margin-bottom: 25px;
    transition: all 0.3s ease;
    box-shadow: 0 6px 20px rgba(0,0,0,0.15);
    position: relative;
    z-index: 1;
}

.main-download-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 30px rgba(0,0,0,0.25);
    background: #f8f9fa;
}

.download-features {
    display: flex;
    justify-content: space-around;
    gap: 10px;
    margin-top: 20px;
}

.feature-item {
    font-size: 14px;
    color: rgba(255,255,255,0.9);
    font-weight: 500;
    padding: 8px 12px;
    background: rgba(255,255,255,0.1);
    border-radius: 20px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.2);
}


/* 下载区域 */
.download-section {
    margin: 50px 0;
    padding: 40px;
    background-color: #fff;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
}

.free-download-btn {
    background: linear-gradient(135deg, #28a745, #20c997);
    color: white;
    border: none;
    padding: 15px 30px;
    border-radius: 6px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    margin-bottom: 30px;
    transition: all 0.3s ease;
}

.free-download-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(40, 167, 69, 0.3);
}

.download-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    text-align: left;
}

.download-group h4 {
    font-size: 16px;
    font-weight: 600;
    color: #333;
    margin-bottom: 15px;
    border-bottom: 2px solid #4a90e2;
    padding-bottom: 8px;
}

.download-group ul {
    list-style: none;
}

.download-group li {
    margin-bottom: 8px;
}

.download-group a {
    color: #4a90e2;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.download-group a:hover {
    color: #357abd;
    text-decoration: underline;
}

.download-links {
    grid-column: 1 / -1;
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid #e9ecef;
    font-size: 13px;
}

.download-links a {
    color: #4a90e2;
    text-decoration: none;
}

.download-links a:hover {
    text-decoration: underline;
}

.download-links ul {
    list-style: none;
    margin: 10px 0;
    padding-left: 20px;
}

.download-links li {
    margin-bottom: 5px;
}

/* 产品介绍区域 */
.productivity-section {
    padding: 80px 0;
    background-color: #fff;
}

.productivity-section h2 {
    font-size: 36px;
    font-weight: 600;
    color: #333;
    text-align: center;
    margin-bottom: 40px;
}

.product-demo {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
}

.demo-content {
    padding: 20px 0;
}

.intro-text {
    font-size: 16px;
    line-height: 1.8;
    color: #555;
}

.intro-text p {
    margin-bottom: 20px;
}

.demo-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.demo-screenshot {
    max-width: 100%;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.12);
    transition: transform 0.3s ease;
}

.demo-screenshot:hover {
    transform: scale(1.02);
}

kbd {
    background-color: #f1f3f4;
    border: 1px solid #d1d5db;
    border-radius: 4px;
    padding: 2px 6px;
    font-family: monospace;
    font-size: 12px;
    color: #374151;
}

/* 功能特性区域 */
.features-section {
    padding: 80px 0;
    background-color: #fafafa;
}

.feature-block {
    margin-bottom: 60px;
    padding: 40px;
    background-color: #fff;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.05);
    border-left: 4px solid #4a90e2;
}

.feature-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}

.feature-text {
    order: 1;
}

.feature-image {
    order: 2;
    display: flex;
    justify-content: center;
    align-items: center;
}

.feature-screenshot {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 6px 24px rgba(0,0,0,0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-screenshot:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(0,0,0,0.15);
}

/* 交替布局 */
.feature-block:nth-child(even) .feature-text {
    order: 2;
}

.feature-block:nth-child(even) .feature-image {
    order: 1;
}

.feature-block h3 {
    font-size: 24px;
    font-weight: 600;
    color: #333;
    margin-bottom: 25px;
    padding-bottom: 10px;
    border-bottom: 2px solid #f0f0f0;
}

.feature-block h4 {
    font-size: 18px;
    font-weight: 600;
    color: #555;
    margin: 25px 0 15px 0;
}

.feature-block ul {
    list-style: none;
    margin-left: 0;
}

.feature-block li {
    margin-bottom: 12px;
    position: relative;
    padding-left: 25px;
    line-height: 1.6;
}

.feature-block li:before {
    content: "▶";
    color: #4a90e2;
    position: absolute;
    left: 0;
    font-size: 12px;
    top: 2px;
}

.feature-subsection {
    margin: 30px 0;
    padding: 20px;
    background-color: #f8f9fa;
    border-radius: 8px;
    border-left: 3px solid #4a90e2;
}

.feature-subsection ul {
    margin-top: 15px;
}

/* 支持区域 */
.support-section {
    padding: 80px 0;
    background-color: #fff;
}

.support-section h2 {
    font-size: 36px;
    font-weight: 600;
    color: #333;
    text-align: center;
    margin-bottom: 50px;
}

.support-content {
    max-width: 800px;
    margin: 0 auto;
}

.support-item {
    margin-bottom: 30px;
    padding: 25px;
    background-color: #f8f9fa;
    border-radius: 8px;
    border-left: 4px solid #4a90e2;
    line-height: 1.7;
}

.support-item strong {
    color: #333;
    font-weight: 600;
}

.support-item a {
    color: #4a90e2;
    text-decoration: none;
    font-weight: 500;
}

.support-item a:hover {
    text-decoration: underline;
}

/* 页脚 */
.footer {
    background-color: #2c3e50;
    color: #ecf0f1;
    padding: 40px 0;
    text-align: center;
}

.footer-links {
    margin-bottom: 15px;
}

.footer-links a {
    color: #4a90e2;
    text-decoration: none;
    margin: 0 5px;
}

.footer-links a:hover {
    text-decoration: underline;
}

.footer-contact {
    margin-bottom: 15px;
}

.footer-contact a {
    color: #4a90e2;
    text-decoration: none;
}

.footer-contact a:hover {
    text-decoration: underline;
}

.footer-copyright {
    font-size: 13px;
    color: #95a5a6;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-toggle {
        display: block;
    }
    
    .nav-list {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: #fff;
        flex-direction: column;
        gap: 0;
        padding: 20px;
        box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    }
    
    .nav-list.active {
        display: flex;
    }
    
    .nav-list li {
        padding: 10px 0;
        border-bottom: 1px solid #f0f0f0;
    }
    
    .nav-list li:last-child {
        border-bottom: none;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }

    .hero-left {
        text-align: center;
    }

    .hero-title {
        font-size: 48px;
    }

    .hero-description {
        max-width: 100%;
    }

    .quick-download-section {
        max-width: 100%;
    }

    .download-features {
        flex-direction: column;
        gap: 8px;
    }
    
    .download-options {
        grid-template-columns: 1fr;
    }
    
    .product-demo {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .feature-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .feature-text {
        order: 1 !important;
    }
    
    .feature-image {
        order: 2 !important;
    }
    
    .hero-container,
    .container {
        padding: 0 15px;
    }
    
    .pro-section,
    .download-section,
    .feature-block,
    .support-item {
        padding: 25px 20px;
    }
    
    .hero-description {
        padding: 20px;
    }
}

@media (max-width: 480px) {
    .hero-section {
        min-height: auto;
        padding: 60px 0;
    }

    .hero-title {
        font-size: 36px;
    }
    
    .hero-subtitle {
        font-size: 16px;
    }
    
    .productivity-section h2,
    .support-section h2 {
        font-size: 28px;
    }
    
    .feature-block h3 {
        font-size: 20px;
    }
    
    .intro-text {
        font-size: 14px;
    }
}

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

.feature-block {
    animation: fadeInUp 0.6s ease-out;
}

.pricing-card {
    animation: fadeInUp 0.6s ease-out;
    animation-delay: 0.1s;
}

/* 下载弹窗样式 */
.download-modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
    backdrop-filter: blur(5px);
}

.modal-content {
    background-color: #fff;
    margin: 10% auto;
    border-radius: 16px;
    width: 90%;
    max-width: 480px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
    animation: modalSlideIn 0.3s ease-out;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 25px 30px 20px 30px;
    border-bottom: 1px solid #f0f0f0;
}

.modal-header h3 {
    font-size: 20px;
    font-weight: 600;
    color: #333;
    margin: 0;
}

.modal-close {
    background: none;
    border: none;
    font-size: 24px;
    color: #999;
    cursor: pointer;
    padding: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.3s ease;
}

.modal-close:hover {
    background-color: #f5f5f5;
    color: #666;
}

.modal-body {
    padding: 30px;
}

.download-info {
    text-align: center;
}

.os-icon-large {
    width: 64px;
    height: 64px;
    margin: 0 auto 15px auto;
    display: block;
}

.os-icon-large svg {
    width: 100%;
    height: 100%;
}

.download-info h4 {
    font-size: 24px;
    font-weight: 600;
    color: #333;
    margin-bottom: 10px;
}

#modal-download-text {
    font-size: 16px;
    color: #666;
    margin-bottom: 25px;
}

.download-notice {
    background-color: #f8f9fa;
    border-radius: 8px;
    padding: 20px;
    border-left: 4px solid #28a745;
}

.download-notice p {
    font-size: 14px;
    color: #555;
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.download-notice p:last-child {
    margin-bottom: 0;
}

.modal-footer {
    padding: 20px 30px 30px 30px;
    display: flex;
    gap: 15px;
    justify-content: flex-end;
}

.modal-btn {
    padding: 12px 24px;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: all 0.3s ease;
    min-width: 100px;
}

.modal-cancel {
    background-color: #f8f9fa;
    color: #666;
    border: 1px solid #e9ecef;
}

.modal-cancel:hover {
    background-color: #e9ecef;
    color: #555;
}

.modal-confirm {
    background: linear-gradient(135deg, #28a745, #20c997);
    color: white;
}

.modal-confirm:hover {
    background: linear-gradient(135deg, #218838, #1e7e34);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(40, 167, 69, 0.3);
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: #4a90e2;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #357abd;
}