/* 自定义样式 */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

:root {
    --primary-color: #3B82F6;
    --secondary-color: #8B5CF6;
    --accent-color: #10B981;
    --text-primary: #1F2937;
    --text-secondary: #6B7280;
    --background-light: #F9FAFB;
    --background-white: #FFFFFF;
    --border-color: #E5E7EB;
}

* {
    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: var(--text-primary);
    overflow-x: hidden;
}

/* 渐变背景 */
.gradient-bg {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    position: relative;
}

.gradient-bg::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="50" cy="50" r="0.5" fill="rgba(255,255,255,0.1)"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    opacity: 0.1;
}

/* 玻璃效果 */
.glass-effect {
    backdrop-filter: blur(10px);
    background: rgba(255, 255, 255, 0.95);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

/* 悬停缩放效果 */
.hover-scale {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.hover-scale:hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}

/* 按钮样式 */
.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(59, 130, 246, 0.4);
}

.btn-secondary {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    padding: 10px 22px;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

/* 卡片样式 */
.card {
    background: var(--background-white);
    border-radius: 16px;
    padding: 32px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
}

.card:hover {
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

/* 特色图标 */
.feature-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
}

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

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

/* 响应式优化 */
@media (max-width: 768px) {
    .gradient-bg h1 {
        font-size: 2.5rem;
    }
    
    .gradient-bg p {
        font-size: 1.125rem;
    }
    
    .card {
        padding: 24px;
    }
    
    .hover-scale:hover {
        transform: translateY(-2px) scale(1.01);
    }
}

/* 代码块样式 */
code {
    background: #f3f4f6;
    color: #374151;
    padding: 4px 8px;
    border-radius: 4px;
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    font-size: 0.875rem;
}

pre code {
    display: block;
    padding: 16px;
    overflow-x: auto;
    background: #1f2937;
    color: #f9fafb;
    border-radius: 8px;
}

/* 加载动画 */
.loading-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid #f3f4f6;
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* FAQ 折叠动画 */
[x-cloak] { display: none !important; }

/* 导航栏滚动效果 */
.navbar-scroll {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

/* 自定义滚动条 */
::-webkit-scrollbar {
    width: 8px;
}

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

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

::-webkit-scrollbar-thumb:hover {
    background: var(--secondary-color);
}

/* 打字效果 */
.typewriter {
    overflow: hidden;
    border-right: .15em solid var(--primary-color);
    white-space: nowrap;
    margin: 0 auto;
    letter-spacing: .15em;
    animation: typing 3.5s steps(40, end), blink-caret .75s step-end infinite;
}

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

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

/* 粒子背景效果 */
.particles-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: -1;
}

.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); opacity: 1; }
    50% { transform: translateY(-20px) rotate(180deg); opacity: 0.5; }
}

/* 优化移动端体验 */
@media (max-width: 640px) {
    .container {
        padding-left: 16px;
        padding-right: 16px;
    }
    
    .text-4xl {
        font-size: 2rem;
    }
    
    .text-6xl {
        font-size: 3rem;
    }
    
    .grid {
        gap: 16px;
    }
}

/* 深色模式支持 */
@media (prefers-color-scheme: dark) {
    :root {
        --text-primary: #f9fafb;
        --text-secondary: #d1d5db;
        --background-light: #111827;
        --background-white: #1f2937;
        --border-color: #374151;
    }
}