:root {
    --primary-color: #2563eb;
    --primary-dark: #1e40af;
    --primary-light: #3b82f6;
    --secondary-color: #6366f1;
    --accent-color: #06b6d4;
    --success-color: #10b981;
    --text-primary: #1e293b;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --radius-sm: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-2xl: 2rem;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.anchor {
    scroll-margin-top: 100px;
}

/* 导航栏 */
header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 50;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(226, 232, 240, 0.8);
    transition: all 0.3s ease;
}

header.scrolled {
    background: rgba(255, 255, 255, 0.95);
    box-shadow: var(--shadow-sm);
}

.navbar,
header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0.875rem 1.5rem;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary-dark), var(--primary-color));
    background-clip: text;
    -webkit-background-clip: text;
    color: transparent;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo-icon {
    font-size: 1.75rem;
}

.nav-links {
    display: none;
    gap: 2rem;
    align-items: center;
}

.nav-links a {
    text-decoration: none;
    font-weight: 500;
    color: var(--text-secondary);
    font-size: 0.9375rem;
    transition: color 0.2s ease;
    position: relative;
}

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

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width 0.2s ease;
}

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

.nav-links .btn-primary,
.header-actions .btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white !important;
    font-weight: 600;
    padding: 0.625rem 1.5rem;
    border-radius: 9999px;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.35);
    transition: all 0.25s ease;
}

.nav-links .btn-primary:hover,
.header-actions .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(37, 99, 235, 0.45);
}

.mobile-menu-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    cursor: pointer;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-primary);
    border-radius: var(--radius-md);
    transition: background 0.2s ease;
}

.mobile-menu-btn:hover {
    background: var(--bg-tertiary);
}

@media (min-width: 768px) {
    .nav-links {
        display: flex;
    }
    .mobile-menu-btn {
        display: none;
    }
}

/* 移动端抽屉 */
.mobile-drawer {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: 100;
    visibility: hidden;
    opacity: 0;
    transition: all 0.3s ease;
}

.mobile-drawer.open {
    visibility: visible;
    opacity: 1;
}

.drawer-content {
    position: absolute;
    right: 0;
    top: 0;
    bottom: 0;
    width: 320px;
    background: white;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    box-shadow: var(--shadow-xl);
    transform: translateX(100%);
    transition: transform 0.3s ease;
}

.mobile-drawer.open .drawer-content {
    transform: translateX(0);
}

.drawer-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.close-drawer {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    border: none;
    border-radius: var(--radius-md);
    font-size: 1.25rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.close-drawer:hover {
    background: var(--border-color);
}

.drawer-links {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    margin-top: 1rem;
}

.drawer-links a {
    text-decoration: none;
    font-size: 1.125rem;
    font-weight: 500;
    color: var(--text-primary);
    padding: 0.75rem 1rem;
    border-radius: var(--radius-md);
    transition: background 0.2s ease;
}

.drawer-links a:hover {
    background: var(--bg-tertiary);
}

.drawer-links .btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white !important;
    font-weight: 600;
    padding: 0.875rem 1.5rem;
    border-radius: 9999px;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.35);
    text-align: center;
    margin-top: 0.5rem;
    transition: all 0.25s ease;
}

.drawer-links .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(37, 99, 235, 0.45);
    background: linear-gradient(135deg, var(--primary-light), var(--primary-color));
}

/* 按钮样式 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-weight: 600;
    padding: 0.75rem 1.75rem;
    border-radius: 9999px;
    text-decoration: none;
    transition: all 0.25s ease;
    cursor: pointer;
    border: none;
    font-family: inherit;
    font-size: 0.9375rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    box-shadow: 0 4px 14px 0 rgba(37, 99, 235, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px 0 rgba(37, 99, 235, 0.45);
}

.btn-primary:active {
    transform: translateY(0);
}

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

.btn-outline:hover {
    border-color: var(--primary-color);
    background: rgba(37, 99, 235, 0.05);
}

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
}

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

/* Hero区域 */
.hero {
    padding: 10rem 0 6rem;
    background: linear-gradient(135deg, #4a5568 0%, #5a6678 30%, #6b7280 50%, #5a6678 70%, #4a5568 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -200px;
    right: -200px;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(37, 99, 235, 0.1) 0%, transparent 70%);
    border-radius: 50%;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -100px;
    left: -100px;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.1) 0%, transparent 70%);
    border-radius: 50%;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    padding: 0.5rem 1.25rem;
    border-radius: 9999px;
    font-size: 0.875rem;
    font-weight: 600;
    color: #ffffff;
    margin-bottom: 1.75rem;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.hero-title {
    font-size: 3rem;
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 1.5rem;
    color: #ffffff;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 2.5rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 3rem;
    margin-top: 4rem;
    padding-top: 3rem;
    border-top: 1px solid rgba(0, 0, 0, 0.05);
}

.stat-item {
    text-align: center;
}

.stat-value {
    font-size: 2.25rem;
    font-weight: 800;
    color: white;
    display: block;
}

.stat-label {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.8);
    margin-top: 0.25rem;
}

@media (max-width: 640px) {
    .hero-title {
        font-size: 2.25rem;
    }
    
    .hero-subtitle {
        font-size: 1.125rem;
    }
    
    .hero-stats {
        gap: 1.5rem;
    }
    
    .stat-value {
        font-size: 1.75rem;
    }
}

/* 功能特性 */
.features {
    padding: 5rem 0;
    background: white;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(99, 102, 241, 0.1);
    color: var(--secondary-color);
    padding: 0.5rem 1.25rem;
    border-radius: 9999px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.section-title {
    font-size: 2.25rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 500px;
    margin: 0 auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 1.75rem;
}

.feature-card {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 2rem;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

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

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.feature-icon {
    width: 4rem;
    height: 4rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(99, 102, 241, 0.1));
    border-radius: var(--radius-lg);
    font-size: 2rem;
    margin-bottom: 1.25rem;
}

.feature-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
}

.feature-description {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* 下载区域 */
.download {
    padding: 5rem 0;
    background: linear-gradient(135deg, var(--bg-secondary) 0%, #f0f9ff 100%);
}

.download-header {
    text-align: center;
    margin-bottom: 3.5rem;
}

.download-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    max-width: 900px;
    margin: 0 auto;
}

.download-card {
    background: white;
    border-radius: var(--radius-xl);
    padding: 2rem;
    text-align: center;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.download-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.platform-icon {
    font-size: 3.5rem;
    margin-bottom: 1rem;
}

.download-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.download-card p {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: 1.5rem;
}

.download-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--primary-color);
    color: white;
    font-weight: 600;
    padding: 0.75rem 1.75rem;
    border-radius: 9999px;
    text-decoration: none;
    transition: all 0.25s ease;
}

.download-btn:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.download-note {
    text-align: center;
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-top: 2rem;
}

/* 使用流程 */
.workflow {
    padding: 5rem 0;
    background: linear-gradient(135deg, #ffffff 0%, #f8fafc 50%, #f1f5f9 100%);
    position: relative;
    overflow: hidden;
}

.workflow-header {
    text-align: center;
    margin-bottom: 3rem;
}

.workflow-steps {
    display: flex;
    justify-content: center;
    align-items: stretch;
    gap: 1rem;
    flex-wrap: wrap;
    margin-bottom: 3.5rem;
}

.workflow-step {
    flex: 1;
    min-width: 180px;
    max-width: 220px;
    background: white;
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    text-align: center;
    border: 1px solid #e2e8f0;
    position: relative;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.workflow-step::after {
    content: '→';
    position: absolute;
    right: -1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--primary-color);
    font-size: 1.5rem;
    font-weight: 300;
    display: none;
}

.workflow-step:last-child::after {
    display: none;
}

@media (min-width: 768px) {
    .workflow-step::after {
        display: block;
    }
}

.workflow-step:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.08);
    border-color: var(--primary-color);
    background: white;
}

.step-number {
    width: 2.75rem;
    height: 2.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    font-size: 1rem;
    font-weight: 700;
    border-radius: 50%;
    margin: 0 auto 1rem;
    box-shadow: 0 6px 16px rgba(37, 99, 235, 0.3);
}

.step-icon {
    font-size: 2.25rem;
    margin-bottom: 0.75rem;
}

.workflow-step h3 {
    font-size: 1.0625rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.workflow-step p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.5;
    flex-grow: 1;
}

.workflow-cta {
    text-align: center;
    margin-bottom: 4rem;
}

.workflow-cta .btn-primary {
    font-size: 1rem;
    padding: 0.875rem 2.5rem;
    font-weight: 600;
    box-shadow: 0 8px 20px -8px rgba(139, 92, 246, 0.5);
}

.workflow-cta .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 28px -8px rgba(139, 92, 246, 0.6);
}

/* 用户评价 */
.testimonials {
    margin-top: 5rem;
    padding-top: 5rem;
    border-top: 1px solid rgba(59, 130, 246, 0.15);
    position: relative;
}

.testimonials::before {
    content: '';
    position: absolute;
    top: 3rem;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--primary-color), transparent);
    border-radius: 1px;
}

.testimonials-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
    text-align: center;
    margin-bottom: 3rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
}

.testimonials-title::before,
.testimonials-title::after {
    content: '—';
    color: rgba(59, 130, 246, 0.3);
    font-size: 1.25rem;
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 1100px;
    margin: 0 auto;
}

.testimonial-card {
    background: white;
    border-radius: var(--radius-xl);
    padding: 2rem;
    border: 1px solid rgba(59, 130, 246, 0.1);
    box-shadow: 0 8px 24px rgba(59, 130, 246, 0.06);
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.testimonial-card::before {
    content: '"';
    position: absolute;
    top: -10px;
    right: -10px;
    font-size: 80px;
    font-weight: 800;
    color: rgba(59, 130, 246, 0.05);
    font-family: Georgia, serif;
}

.testimonial-card:hover {
    transform: translateY(-8px) scale(1.01);
    box-shadow: 0 16px 40px rgba(59, 130, 246, 0.15);
    border-color: rgba(59, 130, 246, 0.3);
}

.testimonial-header {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    margin-bottom: 1.5rem;
}

.testimonial-avatar {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), #06b6d4);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    flex-shrink: 0;
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

.testimonial-info {
    display: flex;
    flex-direction: column;
}

.author-name {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 1rem;
}

.author-title {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-top: 0.25rem;
}

.testimonial-stars {
    display: flex;
    gap: 2px;
    margin-bottom: 1rem;
}

.star {
    width: 18px;
    height: 18px;
    background: linear-gradient(135deg, #fbbf24, #f59e0b);
    clip-path: polygon(50% 0%, 61% 35%, 98% 35%, 68% 57%, 79% 91%, 50% 70%, 21% 91%, 32% 57%, 2% 35%, 39% 35%);
    transition: transform 0.2s ease;
}

.testimonial-card:hover .star {
    transform: scale(1.1);
}

.testimonial-content p {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 0;
    font-style: italic;
    position: relative;
    z-index: 1;
}

.testimonial-rating {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 1.25rem;
    padding-top: 1.25rem;
    border-top: 1px solid rgba(0, 0, 0, 0.05);
}

.rating-value {
    font-weight: 700;
    color: var(--primary-color);
    font-size: 1.25rem;
}

.rating-label {
    font-size: 0.8125rem;
    color: var(--text-muted);
}

/* 新闻博客 */
.blog {
    padding: 5rem 0;
    background: white;
}

.blog-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 3.5rem;
}

.view-all-link {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    color: var(--primary-color);
    font-weight: 600;
    text-decoration: none;
    transition: color 0.2s ease;
}

.view-all-link:hover {
    color: var(--primary-dark);
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.75rem;
}

.blog-card {
    background: white;
    border-radius: var(--radius-xl);
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.blog-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.blog-thumbnail {
    height: 180px;
    background: linear-gradient(135deg, var(--bg-tertiary), var(--border-color));
    display: flex;
    /*align-items: center;*/
    justify-content: center;
    font-size: 3rem;
    position: relative;
    overflow: hidden;
}

.blog-thumbnail::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.05), transparent);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.blog-card:hover .blog-thumbnail::before {
    opacity: 1;
}

.blog-content {
    padding: 1.5rem;
}

.blog-category {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--primary-color);
    background: rgba(37, 99, 235, 0.1);
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    margin-bottom: 0.75rem;
}

.blog-title {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    cursor: pointer;
    transition: color 0.2s ease;
}

.blog-title:hover {
    color: var(--primary-color);
}

.blog-meta {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8125rem;
    color: var(--text-muted);
    margin-bottom: 0.75rem;
}

.blog-excerpt {
    font-size: 0.875rem;
    color: var(--text-secondary);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* FAQ区域 */
.faq {
    padding: 5rem 0;
    background: var(--bg-secondary);
}

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

.faq-item {
    background: white;
    border-radius: var(--radius-lg);
    margin-bottom: 0.75rem;
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: all 0.2s ease;
}

.faq-item:hover {
    border-color: var(--primary-color);
}

.faq-item.open {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-sm);
}

.faq-question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.25rem 1.5rem;
    cursor: pointer;
    font-weight: 600;
    color: var(--text-primary);
    font-size: 1rem;
}

.faq-question::after {
    content: '▼';
    font-size: 0.75rem;
    color: var(--text-muted);
    transition: transform 0.3s ease;
    pointer-events: none;
}

.faq-item.open .faq-question::after {
    transform: rotate(180deg);
}

.faq-answer {
    padding: 0 1.5rem 1.25rem;
    color: var(--text-secondary);
    font-size: 0.9375rem;
    line-height: 1.7;
    display: none;
}

.faq-item.open .faq-answer {
    display: block;
}

.faq-answer kbd {
    background: var(--bg-tertiary);
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-sm);
    font-family: monospace;
    font-size: 0.75rem;
    color: var(--text-primary);
}

.faq-help {
    text-align: center;
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}

.faq-help p {
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.faq-help a {
    color: var(--primary-color);
    font-weight: 600;
    text-decoration: none;
}

.faq-help a:hover {
    text-decoration: underline;
}

/* 页脚 */
footer {
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #0f172a 100%);
    color: white;
    padding: 5rem 0 2rem;
    position: relative;
    overflow: hidden;
}

footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--primary-color), transparent);
}

footer::after {
    content: '';
    position: absolute;
    top: -100px;
    right: -100px;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(37, 99, 235, 0.05) 0%, transparent 70%);
    border-radius: 50%;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr repeat(auto-fit, minmax(140px, 1fr));
    gap: 4rem;
    margin-bottom: 4rem;
    position: relative;
    z-index: 1;
}

.footer-brand {
    grid-column: 1 / -1;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding-bottom: 3rem;
    margin-bottom: 2rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-brand .logo {
    margin-bottom: 1rem;
    font-size: 2rem;
}

.footer-description {
    color: #9ca3af;
    font-size: 0.9375rem;
    max-width: 400px;
    margin-bottom: 1.5rem;
    line-height: 1.7;
}

.footer-cta {
    display: flex;
    gap: 1.25rem;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
}

.footer-cta .btn {
    font-size: 0.9375rem;
    padding: 0.875rem 2rem;
    font-weight: 600;
}

.footer-cta .btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    box-shadow: 0 8px 20px -8px rgba(37, 99, 235, 0.5);
    transform: scale(1.02);
    transition: all 0.3s ease;
}

.footer-cta .btn-primary:hover {
    transform: scale(1.05);
    box-shadow: 0 12px 28px -8px rgba(37, 99, 235, 0.6);
}

.footer-cta .btn-outline {
    border: 2px solid rgba(255, 255, 255, 0.3);
    color: #e5e7eb;
    background: rgba(255, 255, 255, 0.05);
}

.footer-cta .btn-outline:hover {
    border-color: var(--primary-light);
    background: rgba(37, 99, 235, 0.1);
    color: white;
}

.footer-links-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 2.5rem;
}

.footer-section h4 {
    font-size: 0.9375rem;
    font-weight: 600;
    margin-bottom: 1.25rem;
    color: white;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    position: relative;
    padding-bottom: 0.75rem;
}

.footer-section h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 24px;
    height: 2px;
    background: var(--primary-color);
    border-radius: 1px;
}

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

.footer-section li {
    margin-bottom: 0.75rem;
}

.footer-section a {
    color: #9ca3af;
    text-decoration: none;
    font-size: 0.9rem;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.footer-section a:hover {
    color: white;
    transform: translateX(4px);
}

.footer-divider {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    margin-bottom: 2rem;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1.5rem;
    font-size: 0.875rem;
    color: #6b7280;
    position: relative;
    z-index: 1;
}

.footer-copyright {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.footer-copyright svg {
    width: 16px;
    height: 16px;
}

.footer-legal {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
}

.footer-legal a {
    color: #6b7280;
    text-decoration: none;
    transition: color 0.2s ease;
}

.footer-legal a:hover {
    color: white;
}

.footer-social {
    display: flex;
    gap: 0.75rem;
}

.footer-social a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    color: #9ca3af;
    text-decoration: none;
    font-size: 1.125rem;
    transition: all 0.25s ease;
}

.footer-social a:hover {
    background: rgba(37, 99, 235, 0.2);
    border-color: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

/* 下载页面样式 */
.download-page {
    padding: 5rem 0;
    background: linear-gradient(135deg, var(--bg-secondary) 0%, #f0f9ff 100%);
}

.download-page .download-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.75rem;
    max-width: 1000px;
    margin: 0 auto 4rem;
}

.download-page .download-card {
    background: white;
    border-radius: var(--radius-xl);
    padding: 2.25rem;
    text-align: center;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
    position: relative;
}

.download-page .download-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-color);
}

.download-page .platform-icon {
    font-size: 4rem;
    margin-bottom: 1.25rem;
}

.download-page .download-card h3 {
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.download-page .download-card p {
    font-size: 0.9375rem;
    color: var(--text-muted);
    margin-bottom: 1.25rem;
}

.download-page .download-info {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
    font-size: 0.875rem;
}

.download-page .version {
    color: var(--primary-color);
    font-weight: 600;
}

.download-page .size {
    color: var(--text-muted);
}

.download-page .download-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    font-weight: 600;
    padding: 0.875rem 2rem;
    border-radius: 9999px;
    text-decoration: none;
    transition: all 0.25s ease;
    box-shadow: 0 4px 14px 0 rgba(37, 99, 235, 0.4);
}

.download-page .download-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px 0 rgba(37, 99, 235, 0.5);
}

.download-page .download-alternatives {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.download-page .alt-link {
    font-size: 0.875rem;
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.2s ease;
}

.download-page .alt-link:hover {
    color: var(--primary-color);
}

.version-history {
    background: white;
    border-radius: var(--radius-xl);
    padding: 2.5rem;
    margin-bottom: 3rem;
    border: 1px solid var(--border-color);
}

.version-history h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 2rem;
    text-align: center;
}

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

.version-item {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
    transition: background 0.2s ease;
}

.version-item:hover {
    background: var(--bg-secondary);
}

.version-item:last-child {
    border-bottom: none;
}

.version-tag {
    font-size: 0.75rem;
    font-weight: 700;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    background: rgba(16, 185, 129, 0.1);
    color: #10b981;
}

.version-tag.latest {
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary-color);
}

.version-number {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--text-primary);
}

.version-date {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.version-changes {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-left: auto;
    list-style: none;
    padding: 0;
}

.version-changes li {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.download-notes {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.note-card {
    background: white;
    border-radius: var(--radius-lg);
    padding: 1.75rem;
    text-align: center;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.note-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-color);
}

.note-icon {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.note-card h4 {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.note-card p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.usage-tips {
    padding: 5rem 0;
    background: white;
}

.usage-tips h2 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
    text-align: center;
    margin-bottom: 3rem;
}

.tips-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    max-width: 900px;
    margin: 0 auto;
}

.tip-item {
    display: flex;
    gap: 1.25rem;
    padding: 1.5rem;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    transition: all 0.3s ease;
}

.tip-item:hover {
    background: rgba(37, 99, 235, 0.05);
}

.tip-number {
    width: 2.5rem;
    height: 2.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    font-size: 1rem;
    font-weight: 700;
    border-radius: 50%;
    flex-shrink: 0;
}

.tip-content h4 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.tip-content p {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* 响应式优化 */
@media (max-width: 640px) {
    .navbar {
        padding: 0.75rem 1rem;
    }
    
    .container {
        padding: 0 1rem;
    }
    
    .hero {
        padding: 8rem 0 4rem;
    }
    
    .features, .download, .workflow, .blog, .faq {
        padding: 3rem 0;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .footer-content {
        gap: 2rem;
    }
    
    .footer-links-grid {
        flex-direction: column;
        gap: 1.5rem;
    }
}