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

:root {
    --chrome-blue: #4285F4;
    --chrome-green: #34A853;
    --chrome-yellow: #FBBC05;
    --chrome-red: #EA4335;
    --dark-color: #2d3748;
    --light-color: #f8f9fa;
    --gray-color: #e2e8f0;
    --text-color: #4a5568;
    --heading-color: #2d3748;
    --gradient: linear-gradient(135deg, var(--chrome-blue), var(--chrome-green));
    --gradient-light: linear-gradient(135deg, rgba(66, 133, 244, 0.1), rgba(52, 168, 83, 0.1));
    --shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 20px 40px rgba(0, 0, 0, 0.15);
    --transition: all 0.3s ease;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--light-color);
    overflow-x: hidden;
}

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

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    z-index: 1000;
    transition: var(--transition);
}

.navbar.scrolled {
    box-shadow: var(--shadow);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--heading-color);
    text-decoration: none;
}

/* Chrome标志 */
.chrome-logo {
    position: relative;
    width: 40px;
    height: 40px;
}

.logo-circle {
    position: absolute;
    border-radius: 50%;
}

.logo-circle.blue {
    width: 40px;
    height: 40px;
    background: var(--chrome-blue);
    top: 0;
    left: 0;
}

.logo-circle.red {
    width: 24px;
    height: 24px;
    background: var(--chrome-red);
    top: -4px;
    right: -4px;
    z-index: 1;
}

.logo-circle.yellow {
    width: 16px;
    height: 16px;
    background: var(--chrome-yellow);
    bottom: 4px;
    right: 4px;
    z-index: 2;
}

.logo-circle.green {
    width: 20px;
    height: 20px;
    background: var(--chrome-green);
    bottom: -2px;
    left: 8px;
    z-index: 1;
}

.nav-links {
    display: flex;
    gap: 30px;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.nav-links a:hover {
    color: var(--chrome-blue);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient);
    transition: var(--transition);
}

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

/* 下载按钮 */
.download-btn {
    background: var(--gradient);
    color: white !important;
    padding: 10px 20px;
    border-radius: 50px;
    font-weight: 600;
    transition: var(--transition);
}

.download-btn:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
}

.download-btn::after {
    display: none;
}

.download-btn.active {
    box-shadow: var(--shadow);
}

.mobile-menu {
    display: none;
    cursor: pointer;
}

.bar {
    width: 25px;
    height: 3px;
    background-color: var(--heading-color);
    margin: 5px 0;
    transition: var(--transition);
}

/* 英雄区域 */
.hero {
    padding: 150px 0 100px;
    background: var(--gradient-light);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 50%;
    height: 100%;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="dots" x="0" y="0" width="10" height="10" patternUnits="userSpaceOnUse"><circle cx="2" cy="2" r="1" fill="%234285F4" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23dots)"/></svg>');
    opacity: 0.3;
    z-index: 0;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-content h1 {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 10px;
    color: var(--heading-color);
}

.hero-content h2 {
    font-size: 1.8rem;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--chrome-blue);
}

.hero-content p {
    font-size: 1.1rem;
    margin-bottom: 30px;
    color: var(--text-color);
}

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

.btn-primary {
    display: inline-block;
    padding: 15px 30px;
    background: var(--gradient);
    color: white;
    border: none;
    border-radius: 50px;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    box-shadow: var(--shadow);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
}

.btn-secondary {
    display: inline-block;
    padding: 15px 30px;
    background: white;
    color: var(--chrome-blue);
    border: 2px solid var(--chrome-blue);
    border-radius: 50px;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
}

.btn-secondary:hover {
    background: var(--chrome-blue);
    color: white;
    transform: translateY(-3px);
}

/* 浏览器演示 */
.browser-demo {
    width: 100%;
    max-width: 400px;
    background: white;
    border-radius: 10px;
    box-shadow: var(--shadow-hover);
    overflow: hidden;
    animation: float 6s ease-in-out infinite;
}

.browser-header {
    background: #f1f1f1;
    padding: 10px 15px;
    display: flex;
    align-items: center;
    gap: 15px;
}

.browser-controls {
    display: flex;
    gap: 8px;
}

.control-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.control-dot.red {
    background: var(--chrome-red);
}

.control-dot.yellow {
    background: var(--chrome-yellow);
}

.control-dot.green {
    background: var(--chrome-green);
}

.browser-url {
    flex: 1;
}

.url-bar {
    background: white;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.9rem;
    color: var(--text-color);
    border: 1px solid var(--gray-color);
    display: flex;
    align-items: center;
    gap: 10px;
}

.url-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--chrome-green);
}

.browser-content {
    height: 300px;
    background: #f9f9f9;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.content-section {
    height: 60px;
    background: white;
    border-radius: 8px;
    border: 1px solid var(--gray-color);
}

.content-section.section-2 {
    height: 80px;
}

.content-section.section-3 {
    height: 40px;
    width: 70%;
}

/* 功能区域 */
.features {
    padding: 100px 0;
    background: white;
}

.features h2 {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 60px;
    color: var(--heading-color);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.feature-card {
    background: white;
    padding: 40px 30px;
    border-radius: 20px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient);
    transform: scaleX(0);
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
}

.feature-card:hover::before {
    transform: scaleX(1);
}

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    background: var(--gradient-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    position: relative;
}

.feature-icon::after {
    content: '';
    position: absolute;
    width: 40px;
    height: 40px;
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
}

.feature-icon.speed::after {
    background-image: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="%234285F4"><path d="M13 2L3 14H12L11 22L21 10H12L13 2Z"/></svg>');
}

.feature-icon.security::after {
    background-image: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="%23EA4335"><path d="M12 15C15.866 15 19 11.866 19 8C19 4.13401 15.866 1 12 1C8.13401 1 5 4.13401 5 8C5 11.866 8.13401 15 12 15Z"/><path d="M12 15C12 15 15 21 15 21H9C9 21 12 15 12 15Z"/></svg>');
}

.feature-icon.sync::after {
    background-image: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="%2334A853"><path d="M21 16V8A2 2 0 0 0 19 6H5A2 2 0 0 0 3 8V16A2 2 0 0 0 5 18H19A2 2 0 0 0 21 16Z"/><polyline points="3 10 12 16 21 10"/></svg>');
}

.feature-icon.extensions::after {
    background-image: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="%23FBBC05"><path d="M16 8L2 22L6 12L16 8Z"/><path d="M12 2L2 22"/></svg>');
}

.feature-card h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--heading-color);
}

.feature-card p {
    color: var(--text-color);
    line-height: 1.6;
}

/* 性能区域 */
.performance {
    padding: 100px 0;
    background: var(--gradient-light);
}

.performance h2 {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 60px;
    color: var(--heading-color);
}

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

.performance-stats {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.stat-item {
    display: flex;
    align-items: baseline;
    gap: 10px;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--chrome-blue);
}

.stat-label {
    font-size: 1.1rem;
    color: var(--text-color);
}

.performance-info p {
    font-size: 1.1rem;
    line-height: 1.7;
    color: var(--text-color);
}

/* 安全区域 */
.security {
    padding: 100px 0;
    background: white;
}

.security h2 {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 60px;
    color: var(--heading-color);
}

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

.security-item {
    background: white;
    padding: 40px 30px;
    border-radius: 20px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    text-align: center;
}

.security-item:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
}

.security-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    background: var(--gradient-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.security-icon::after {
    content: '';
    position: absolute;
    width: 40px;
    height: 40px;
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
}

.security-icon.shield::after {
    background-image: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="%23EA4335"><path d="M12 2L2 7L12 12L22 7L12 2Z"/><path d="M2 17L12 22L22 17"/><path d="M2 12L12 17L22 12"/></svg>');
}

.security-icon.update::after {
    background-image: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="%2334A853"><path d="M19 12H5"/><path d="M12 19V5"/><path d="M16.5 10.5L12 6L7.5 10.5"/></svg>');
}

.security-item h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--heading-color);
}

.security-item p {
    color: var(--text-color);
    line-height: 1.6;
}

/* 下载CTA区域 */
.download-cta {
    padding: 100px 0;
    background: var(--gradient);
    color: white;
    text-align: center;
}

.download-cta h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 20px;
}

.download-cta p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.download-cta .btn-primary {
    background: white;
    color: var(--chrome-blue);
    font-size: 1.1rem;
    padding: 15px 40px;
}

.download-cta .btn-primary:hover {
    background: rgba(255, 255, 255, 0.9);
    transform: translateY(-3px);
}

/* 下载页面英雄区域 */
.download-hero {
    padding: 150px 0 80px;
    background: var(--gradient-light);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.download-hero::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 50%;
    height: 100%;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="dots" x="0" y="0" width="10" height="10" patternUnits="userSpaceOnUse"><circle cx="2" cy="2" r="1" fill="%234285F4" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23dots)"/></svg>');
    opacity: 0.3;
    z-index: 0;
}

.download-hero h1 {
    font-size: 2.8rem;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--heading-color);
    position: relative;
    z-index: 1;
}

.download-hero p {
    font-size: 1.2rem;
    max-width: 700px;
    margin: 0 auto;
    color: var(--text-color);
    position: relative;
    z-index: 1;
}

/* 下载资源区域 */
.download-resources {
    padding: 100px 0;
    background: white;
}

.platforms-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.platform-card {
    background: white;
    padding: 40px 30px;
    border-radius: 20px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.platform-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient);
    transform: scaleX(0);
    transition: var(--transition);
}

.platform-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
}

.platform-card:hover::before {
    transform: scaleX(1);
}

.platform-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    background: var(--gradient-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.platform-icon::after {
    content: '';
    position: absolute;
    width: 40px;
    height: 40px;
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
}

.platform-icon.windows::after {
    background-image: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="%230078D4"><path d="M21 10V8.5C21 6.56701 19.4329 5 17.5 5H6.5C4.56701 5 3 6.56701 3 8.5V10"/><path d="M3 14V15.5C3 17.433 4.56701 19 6.5 19H17.5C19.4329 19 21 17.433 21 15.5V14"/><path d="M8 3L16 3"/><path d="M12 3V10"/></svg>');
}

.platform-icon.mac::after {
    background-image: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="%23000000"><path d="M4 18V6C4 4.89543 4.89543 4 6 4H18C19.1046 4 20 4.89543 20 6V18C20 19.1046 19.1046 20 18 20H6C4.89543 20 4 19.1046 4 18Z"/><path d="M9 17H15"/><path d="M12 13V17"/></svg>');
}

.platform-icon.linux::after {
    background-image: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="%23000000"><path d="M18.5 14.5L12 21L5.5 14.5"/><path d="M5.5 9.5L12 3L18.5 9.5"/></svg>');
}

.platform-icon.mobile::after {
    background-image: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="%23000000"><rect x="5" y="2" width="14" height="20" rx="2" ry="2"/><path d="M12 18H12.01"/></svg>');
}

.platform-card h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--heading-color);
}

.platform-card p {
    color: var(--text-color);
    margin-bottom: 20px;
    line-height: 1.6;
}

.platform-meta {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 30px;
    padding: 10px 0;
    border-top: 1px solid var(--gray-color);
    border-bottom: 1px solid var(--gray-color);
}

.file-size,
.version {
    font-size: 0.9rem;
    color: var(--text-color);
    font-weight: 500;
}

/* 特别的下载按钮 */
.chrome-download {
    display: inline-block;
    padding: 15px 30px;
    background: var(--gradient);
    color: white;
    border-radius: 50px;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    box-shadow: var(--shadow);
    position: relative;
    overflow: hidden;
}

.chrome-download::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: var(--transition);
}

.chrome-download:hover::before {
    left: 100%;
}

.chrome-download:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(66, 133, 244, 0.4);
    }
    70% {
        box-shadow: 0 0 0 15px rgba(66, 133, 244, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(66, 133, 244, 0);
    }
}

/* 移动设备应用商店按钮 */
.mobile-buttons {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.app-store-btn,
.play-store-btn {
    display: block;
    padding: 12px 24px;
    border-radius: 10px;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    text-align: center;
}

.app-store-btn {
    background: #000;
    color: white;
}

.play-store-btn {
    background: #34A853;
    color: white;
}

.app-store-btn:hover,
.play-store-btn:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
}

/* 系统要求 */
.system-requirements {
    padding: 100px 0;
    background: var(--gradient-light);
}

.system-requirements h2 {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 60px;
    color: var(--heading-color);
}

.requirements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.requirement-card {
    background: white;
    padding: 40px 30px;
    border-radius: 20px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.requirement-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
}

.requirement-card h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--heading-color);
}

.requirement-card ul {
    list-style: none;
    padding: 0;
}

.requirement-card li {
    padding: 10px 0;
    padding-left: 30px;
    position: relative;
    color: var(--text-color);
    line-height: 1.6;
}

.requirement-card li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--chrome-green);
    font-weight: 700;
}

/* FAQ部分 */
.faq {
    padding: 100px 0;
    background: white;
}

.faq h2 {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 60px;
    color: var(--heading-color);
}

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

.faq-item {
    margin-bottom: 20px;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow);
    background: white;
}

.faq-question {
    padding: 20px 30px;
    background: white;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition);
    font-weight: 600;
    color: var(--heading-color);
    border-bottom: 1px solid var(--gray-color);
}

.faq-question:hover {
    background: var(--gradient-light);
}

.faq-question svg {
    color: var(--chrome-blue);
    transition: var(--transition);
}

.faq-answer {
    padding: 0 30px;
    max-height: 0;
    overflow: hidden;
    transition: var(--transition);
    background: white;
}

.faq-answer p {
    padding: 20px 0;
    color: var(--text-color);
    line-height: 1.6;
}

.faq-item.active .faq-answer {
    max-height: 200px;
}

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

/* 页脚 */
.footer {
    background: var(--dark-color);
    color: white;
    padding: 80px 0 40px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 60px;
}

.footer-section h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 15px;
}

.footer-section h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 20px;
}

.footer-section p {
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.6;
}

.footer-section ul {
    list-style: none;
    padding: 0;
}

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

.footer-section a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: var(--transition);
}

.footer-section a:hover {
    color: white;
    transform: translateX(5px);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 40px;
    display: flex;
    justify-content: center;
    align-items: center;
}

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

.copyright-info p {
    color: rgba(255, 255, 255, 0.7);
    margin: 10px 0;
}

.copyright-info p:first-child {
    font-weight: 600;
}

.copyright-info p:last-child {
    font-size: 0.9rem;
    opacity: 0.8;
}

/* 动画 */
@keyframes float {
    0% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-20px);
    }
    100% {
        transform: translateY(0px);
    }
}

/* 响应式设计 */
@media (max-width: 992px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-content h1 {
        font-size: 2.5rem;
    }

    .hero-content h2 {
        font-size: 1.5rem;
    }

    .cta-buttons {
        justify-content: center;
    }

    .browser-demo {
        max-width: 300px;
        margin: 0 auto;
    }

    .browser-content {
        height: 250px;
    }

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

    .performance-stats {
        flex-direction: row;
        justify-content: center;
        flex-wrap: wrap;
    }
}

@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 80px;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        align-items: center;
        padding: 30px 0;
        box-shadow: var(--shadow);
        transform: translateY(-150%);
        transition: var(--transition);
        z-index: 999;
    }

    .nav-links.active {
        transform: translateY(0);
    }

    .mobile-menu {
        display: block;
    }

    .hero {
        padding: 120px 0 80px;
    }

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

    .features h2,
    .performance h2,
    .security h2,
    .download-cta h2,
    .download-hero h1,
    .system-requirements h2,
    .faq h2 {
        font-size: 2rem;
    }

    .features,
    .performance,
    .security,
    .download-cta,
    .download-resources,
    .system-requirements,
    .faq {
        padding: 80px 0;
    }

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

@media (max-width: 576px) {
    .hero-content h1 {
        font-size: 1.8rem;
    }

    .btn-primary,
    .btn-secondary {
        padding: 12px 20px;
        font-size: 0.9rem;
    }

    .performance-stats {
        flex-direction: column;
        align-items: center;
    }

    .footer {
        padding: 60px 0 30px;
    }
}

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

::-webkit-scrollbar-track {
    background: var(--gray-color);
}

::-webkit-scrollbar-thumb {
    background: var(--chrome-blue);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--chrome-green);
}

/* 平滑滚动 */
html {
    scroll-behavior: smooth;
}

/* 加载动画 */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.8s ease forwards;
}

/* 延迟动画 */
.delay-1 {
    animation-delay: 0.2s;
}

.delay-2 {
    animation-delay: 0.4s;
}

.delay-3 {
    animation-delay: 0.6s;
}

.delay-4 {
    animation-delay: 0.8s;
}