/* ECS现代企业级样式重构 */

/* 全新设计系统变量 */
:root {
    /* 现代配色系统 */
    --modern-primary: #6366f1;
    --modern-primary-dark: #4f46e5;
    --modern-secondary: #f59e0b;
    --modern-accent: #8b5cf6;
    --modern-success: #10b981;
    --modern-warning: #f59e0b;
    --modern-error: #ef4444;
    
    /* 中性色系 */
    --modern-white: #ffffff;
    --modern-gray-50: #f8fafc;
    --modern-gray-100: #f1f5f9;
    --modern-gray-200: #e2e8f0;
    --modern-gray-300: #cbd5e1;
    --modern-gray-400: #94a3b8;
    --modern-gray-500: #64748b;
    --modern-gray-600: #475569;
    --modern-gray-700: #334155;
    --modern-gray-800: #1e293b;
    --modern-gray-900: #0f172a;
    
    /* 渐变色系 */
    --modern-gradient-1: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --modern-gradient-2: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --modern-gradient-3: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --modern-gradient-4: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
    --modern-gradient-primary: linear-gradient(135deg, var(--modern-primary) 0%, var(--modern-accent) 100%);
    
    /* 阴影系统 */
    --modern-shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --modern-shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --modern-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --modern-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --modern-shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --modern-shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --modern-shadow-colored: 0 20px 40px -12px rgba(99, 102, 241, 0.3);
    
    /* 动画系统 */
    --modern-transition-fast: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    --modern-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --modern-transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    --modern-transition-bounce: all 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    
    /* 边框半径 - 企业级减少圆角 */
    --modern-radius-sm: 2px;
    --modern-radius: 4px;
    --modern-radius-md: 6px;
    --modern-radius-lg: 8px;
    --modern-radius-xl: 10px;
    --modern-radius-2xl: 12px;
    --modern-radius-full: 9999px;
    
    /* 间距系统 */
    --modern-space-xs: 0.5rem;
    --modern-space-sm: 0.75rem;
    --modern-space-md: 1rem;
    --modern-space-lg: 1.5rem;
    --modern-space-xl: 2rem;
    --modern-space-2xl: 2.5rem;
    --modern-space-3xl: 3rem;
    --modern-space-4xl: 4rem;
    --modern-space-5xl: 5rem;
}

/* 全局重置和基础样式 */
.use-cases,
.tech-architecture,
.product-news {
    position: relative;
    overflow: hidden;
}

/* 应用场景模块 - 全新设计 */
.use-cases {
    padding: var(--modern-space-5xl) 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(99, 102, 241, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(139, 92, 246, 0.05) 0%, transparent 50%),
        linear-gradient(135deg, var(--modern-white) 0%, var(--modern-gray-50) 100%);
}

.use-cases::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="60" height="60" viewBox="0 0 60 60" xmlns="http://www.w3.org/2000/svg"><defs><pattern id="grid" width="60" height="60" patternUnits="userSpaceOnUse"><path d="M 60 0 L 0 0 0 60" fill="none" stroke="%236366f1" stroke-width="0.5" opacity="0.1"/></pattern></defs><rect width="100%" height="100%" fill="url(%23grid)"/></svg>') repeat;
    pointer-events: none;
    opacity: 0.3;
}

.use-cases .container {
    position: relative;
    z-index: 2;
}

.use-cases .section-title {
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    font-weight: 800;
    background: var(--modern-gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-align: center;
    margin-bottom: var(--modern-space-lg);
    line-height: 1.1;
    letter-spacing: -0.02em;
    position: relative;
}

.use-cases .section-title::after {
    content: '';
    position: absolute;
    bottom: -12px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 4px;
    background: var(--modern-gradient-primary);
    border-radius: var(--modern-radius-sm);
    opacity: 0.8;
}

.use-cases .section-subtitle {
    font-size: 1.25rem;
    color: var(--modern-gray-600);
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--modern-space-4xl);
    line-height: 1.7;
    font-weight: 400;
}

.use-case-card {
    background: var(--modern-white);
    border-radius: var(--modern-radius-lg);
    padding: var(--modern-space-2xl);
    height: 100%;
    border: 1px solid var(--modern-gray-200);
    box-shadow: var(--modern-shadow-sm);
    transition: var(--modern-transition);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
}

.use-case-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--modern-gradient-primary);
    opacity: 0;
    transition: var(--modern-transition);
    z-index: -1;
}

.use-case-card::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: conic-gradient(from 0deg at 50% 50%, transparent 0deg, rgba(99, 102, 241, 0.1) 45deg, transparent 90deg, transparent 270deg, rgba(139, 92, 246, 0.1) 315deg, transparent 360deg);
    opacity: 0;
    transition: var(--modern-transition-slow);
    animation: rotate 20s linear infinite;
    z-index: -1;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.use-case-card:hover {
    transform: translateY(-12px) scale(1.02);
    box-shadow: var(--modern-shadow-colored);
    border-color: rgba(99, 102, 241, 0.3);
}

.use-case-card:hover::before {
    opacity: 0.02;
}

.use-case-card:hover::after {
    opacity: 1;
}

.use-case-icon {
    width: 80px;
    height: 80px;
    background: var(--modern-gradient-primary);
    border-radius: var(--modern-radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--modern-space-lg);
    position: relative;
    box-shadow: var(--modern-shadow-lg);
}

.use-case-icon::before {
    content: '';
    position: absolute;
    inset: -2px;
    background: var(--modern-gradient-primary);
    border-radius: var(--modern-radius-md);
    z-index: -1;
    opacity: 0;
    transition: var(--modern-transition);
}

.use-case-card:hover .use-case-icon::before {
    opacity: 0.3;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 0.3; }
    50% { transform: scale(1.1); opacity: 0.1; }
}

.use-case-icon i {
    font-size: 2rem;
    color: var(--modern-white);
    z-index: 2;
}

.use-case-card h5 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--modern-gray-900);
    margin-bottom: var(--modern-space-md);
    line-height: 1.3;
    transition: var(--modern-transition);
}

.use-case-card:hover h5 {
    color: var(--modern-primary);
}

.use-case-card p {
    color: var(--modern-gray-600);
    line-height: 1.7;
    margin-bottom: var(--modern-space-lg);
    font-size: 1rem;
    transition: var(--modern-transition);
}

.use-case-card:hover p {
    color: var(--modern-gray-700);
}

.use-case-features {
    list-style: none;
    padding: 0;
    margin: 0;
}

.use-case-features li {
    padding: var(--modern-space-sm) 0;
    color: var(--modern-gray-700);
    position: relative;
    padding-left: var(--modern-space-lg);
    font-size: 0.95rem;
    font-weight: 500;
    transition: var(--modern-transition);
}

.use-case-features li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 8px;
    height: 8px;
    background: var(--modern-gradient-primary);
    border-radius: var(--modern-radius-full);
    transition: var(--modern-transition-bounce);
}

.use-case-card:hover .use-case-features li::before {
    transform: translateY(-50%) scale(1.3);
    box-shadow: 0 0 20px rgba(99, 102, 241, 0.5);
}

/* 技术架构模块 - 蓝紫色优化 */
.tech-architecture {
    padding: var(--modern-space-5xl) 0;
    background: 
        radial-gradient(circle at 80% 20%, rgba(99, 102, 241, 0.12) 0%, transparent 50%),
        radial-gradient(circle at 20% 80%, rgba(139, 92, 246, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 50% 50%, rgba(79, 70, 229, 0.04) 0%, transparent 70%),
        linear-gradient(135deg, var(--modern-gray-50) 0%, #f8faff 100%);
}

.tech-architecture::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="120" height="120" viewBox="0 0 120 120" xmlns="http://www.w3.org/2000/svg"><defs><pattern id="tech-pattern" width="120" height="120" patternUnits="userSpaceOnUse"><circle cx="60" cy="60" r="2" fill="%236366f1" opacity="0.15"/><circle cx="30" cy="30" r="1.5" fill="%238b5cf6" opacity="0.1"/><circle cx="90" cy="30" r="1" fill="%234f46e5" opacity="0.08"/><circle cx="30" cy="90" r="1" fill="%23a855f7" opacity="0.08"/><circle cx="90" cy="90" r="1.5" fill="%236366f1" opacity="0.12"/><polygon points="60,20 70,40 50,40" fill="%236366f1" opacity="0.05"/><polygon points="60,100 70,80 50,80" fill="%238b5cf6" opacity="0.05"/></pattern></defs><rect width="100%" height="100%" fill="url(%23tech-pattern)"/></svg>') repeat;
    opacity: 0.3;
    pointer-events: none;
}

.tech-architecture .container {
    position: relative;
    z-index: 2;
}

.tech-architecture .section-title {
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    font-weight: 800;
    background: linear-gradient(135deg, var(--modern-primary) 0%, var(--modern-accent) 50%, #4f46e5 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-align: center;
    margin-bottom: var(--modern-space-lg);
    line-height: 1.1;
    letter-spacing: -0.02em;
    position: relative;
    filter: drop-shadow(0 2px 4px rgba(99, 102, 241, 0.1));
}

.tech-architecture .section-title::after {
    content: '';
    position: absolute;
    bottom: -12px;
    left: 50%;
    transform: translateX(-50%);
    width: 140px;
    height: 4px;
    background: linear-gradient(135deg, var(--modern-primary) 0%, var(--modern-accent) 50%, #4f46e5 100%);
    border-radius: var(--modern-radius-sm);
    opacity: 0.9;
    box-shadow: 0 2px 8px rgba(99, 102, 241, 0.3);
}

.tech-architecture .section-subtitle {
    font-size: 1.25rem;
    color: var(--modern-gray-600);
    text-align: center;
    max-width: 800px;
    margin: 0 auto var(--modern-space-4xl);
    line-height: 1.7;
    font-weight: 400;
}

.tech-visual {
    height: 500px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--modern-space-3xl);
    position: relative;
}

.tech-layers {
    width: 320px;
    height: 400px;
    position: relative;
    perspective: 1000px;
}

.tech-layer {
    width: 100%;
    height: 80px;
    margin-bottom: var(--modern-space-md);
    background: var(--modern-white);
    border-radius: var(--modern-radius-md);
    border: 2px solid var(--modern-gray-200);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--modern-transition);
    position: relative;
    overflow: hidden;
    box-shadow: var(--modern-shadow-md);
    transform-style: preserve-3d;
}

.tech-layer::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 6px;
    background: linear-gradient(135deg, var(--modern-primary), var(--modern-accent));
    transform: scaleY(0);
    transition: var(--modern-transition-bounce);
    border-radius: 0 var(--modern-radius) var(--modern-radius) 0;
    box-shadow: 0 0 10px rgba(99, 102, 241, 0.4);
}

.tech-layer::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.06), rgba(139, 92, 246, 0.04));
    opacity: 0;
    transition: var(--modern-transition);
    border-radius: var(--modern-radius-md);
}

.tech-layer:hover::before {
    transform: scaleY(1);
}

.tech-layer:hover::after {
    opacity: 1;
}

.tech-layer:hover {
    transform: translateX(20px) rotateY(5deg);
    border-color: var(--modern-primary);
    box-shadow: 0 20px 40px -12px rgba(99, 102, 241, 0.25);
}

.layer-content {
    display: flex;
    align-items: center;
    gap: var(--modern-space-md);
    z-index: 2;
    position: relative;
}

.layer-content i {
    font-size: 1.75rem;
    background: var(--modern-gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    transition: var(--modern-transition);
}

.tech-layer:hover .layer-content i {
    transform: scale(1.2) rotate(5deg);
}

.layer-content span {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--modern-gray-800);
    transition: var(--modern-transition);
}

.tech-layer:hover .layer-content span {
    color: var(--modern-primary);
}

.tech-features {
    padding-left: var(--modern-space-lg);
}

.tech-feature {
    display: flex;
    align-items: flex-start;
    gap: var(--modern-space-md);
    margin-bottom: var(--modern-space-lg);
    padding: var(--modern-space-lg);
    background: var(--modern-white);
    border-radius: var(--modern-radius-md);
    border: 1px solid var(--modern-gray-200);
    transition: var(--modern-transition);
    position: relative;
    overflow: hidden;
    box-shadow: var(--modern-shadow-sm);
}

/* 移除左边框效果 */

.tech-feature::after {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 100%;
    height: 200%;
    background: linear-gradient(45deg, transparent 30%, rgba(99, 102, 241, 0.08) 50%, transparent 70%);
    transform: translateX(100%);
    transition: var(--modern-transition-slow);
}

/* 移除左边框hover效果 */

.tech-feature:hover::after {
    transform: translateX(-100%);
}

.tech-feature:hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow: 0 12px 25px -8px rgba(99, 102, 241, 0.25);
    border-color: var(--modern-primary);
}

.tech-feature-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--modern-primary), var(--modern-accent));
    border-radius: var(--modern-radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    position: relative;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.25);
    transition: var(--modern-transition-bounce);
}

.tech-feature-icon::before {
    content: '';
    position: absolute;
    inset: -2px;
    background: linear-gradient(135deg, var(--modern-primary), var(--modern-accent));
    border-radius: var(--modern-radius-md);
    z-index: -1;
    opacity: 0;
    transition: var(--modern-transition);
}

.tech-feature:hover .tech-feature-icon {
    transform: scale(1.05) rotate(3deg);
}

.tech-feature:hover .tech-feature-icon::before {
    opacity: 0.3;
    animation: pulse 2s infinite;
}

.tech-feature-icon i {
    font-size: 1.25rem;
    color: var(--modern-white);
    z-index: 2;
}

.tech-feature-content h5 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--modern-gray-900);
    margin-bottom: var(--modern-space-xs);
    line-height: 1.4;
    transition: var(--modern-transition);
}

.tech-feature:hover .tech-feature-content h5 {
    color: var(--modern-primary);
}

.tech-feature-content p {
    color: var(--modern-gray-600);
    line-height: 1.6;
    margin: 0;
    font-size: 0.9rem;
    transition: var(--modern-transition);
}

.tech-feature:hover .tech-feature-content p {
    color: var(--modern-gray-700);
}

/* 产品动态模块 - 蓝紫色优化 */
.product-news {
    padding: var(--modern-space-5xl) 0;
    background: 
        radial-gradient(circle at 30% 40%, rgba(99, 102, 241, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 70% 60%, rgba(139, 92, 246, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 50% 20%, rgba(79, 70, 229, 0.06) 0%, transparent 60%),
        linear-gradient(135deg, var(--modern-white) 0%, #f8faff 100%);
}

.product-news::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="100" height="100" viewBox="0 0 100 100" xmlns="http://www.w3.org/2000/svg"><defs><pattern id="news-pattern" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="50" cy="50" r="3" fill="none" stroke="%236366f1" stroke-width="1" opacity="0.08"/><circle cx="25" cy="25" r="2" fill="none" stroke="%238b5cf6" stroke-width="0.8" opacity="0.06"/><circle cx="75" cy="25" r="1.5" fill="none" stroke="%234f46e5" stroke-width="0.6" opacity="0.05"/><circle cx="25" cy="75" r="1.5" fill="none" stroke="%23a855f7" stroke-width="0.6" opacity="0.05"/><circle cx="75" cy="75" r="2" fill="none" stroke="%236366f1" stroke-width="0.8" opacity="0.06"/><path d="M20 20 L80 80 M80 20 L20 80" stroke="%236366f1" stroke-width="0.3" opacity="0.04"/></pattern></defs><rect width="100%" height="100%" fill="url(%23news-pattern)"/></svg>') repeat;
    opacity: 0.4;
    pointer-events: none;
}

.product-news .container {
    position: relative;
    z-index: 2;
}

.product-news .section-title {
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    font-weight: 800;
    background: linear-gradient(135deg, var(--modern-primary) 0%, var(--modern-accent) 50%, #a855f7 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-align: center;
    margin-bottom: var(--modern-space-lg);
    line-height: 1.1;
    letter-spacing: -0.02em;
    position: relative;
    filter: drop-shadow(0 2px 4px rgba(99, 102, 241, 0.1));
}

.product-news .section-title::after {
    content: '';
    position: absolute;
    bottom: -12px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 4px;
    background: linear-gradient(135deg, var(--modern-primary) 0%, var(--modern-accent) 50%, #a855f7 100%);
    border-radius: var(--modern-radius-sm);
    opacity: 0.9;
    box-shadow: 0 2px 8px rgba(99, 102, 241, 0.3);
}

.product-news .section-subtitle {
    font-size: 1.25rem;
    color: var(--modern-gray-600);
    text-align: center;
    max-width: 650px;
    margin: 0 auto var(--modern-space-4xl);
    line-height: 1.7;
    font-weight: 400;
}

.loading-container {
    padding: var(--modern-space-4xl) var(--modern-space-xl);
    background: var(--modern-white);
    border-radius: var(--modern-radius-lg);
    border: 1px solid var(--modern-gray-200);
    box-shadow: var(--modern-shadow-lg);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.loading-container::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.03), rgba(139, 92, 246, 0.02));
    pointer-events: none;
}

.loading-container i {
    animation: modernSpin 1.5s ease-in-out infinite;
    color: var(--modern-primary);
    filter: drop-shadow(0 0 20px rgba(99, 102, 241, 0.4));
}

@keyframes modernSpin {
    0% { transform: rotate(0deg) scale(1); }
    50% { transform: rotate(180deg) scale(1.1); }
    100% { transform: rotate(360deg) scale(1); }
}

/* 新闻卡片样式 */
.news-card {
    background: var(--modern-white);
    border-radius: var(--modern-radius-lg);
    padding: var(--modern-space-2xl);
    height: 100%;
    border: 1px solid var(--modern-gray-200);
    box-shadow: var(--modern-shadow-sm);
    transition: var(--modern-transition);
    position: relative;
    overflow: hidden;
    cursor: pointer;
    backdrop-filter: blur(10px);
}

.news-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--modern-primary), var(--modern-accent));
    transform: scaleX(0);
    transition: var(--modern-transition-bounce);
    box-shadow: 0 2px 8px rgba(99, 102, 241, 0.3);
}

.news-card::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at var(--x, 50%) var(--y, 50%), rgba(99, 102, 241, 0.08) 0%, transparent 50%);
    opacity: 0;
    transition: var(--modern-transition);
    pointer-events: none;
}

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

.news-card:hover::after {
    opacity: 1;
}

.news-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 25px 50px -12px rgba(99, 102, 241, 0.25);
    border-color: rgba(99, 102, 241, 0.3);
}

.news-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--modern-space-lg);
    font-size: 0.875rem;
}

.news-category {
    background: linear-gradient(135deg, var(--modern-primary), var(--modern-accent));
    color: var(--modern-white);
    padding: var(--modern-space-xs) var(--modern-space-md);
    border-radius: var(--modern-radius-md);
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    box-shadow: 0 2px 8px rgba(99, 102, 241, 0.3);
}

.news-date {
    color: var(--modern-gray-500);
    font-weight: 500;
}

.news-title {
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--modern-gray-900);
    margin-bottom: var(--modern-space-md);
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    transition: var(--modern-transition);
}

.news-card:hover .news-title {
    color: var(--modern-primary);
}

.news-excerpt {
    color: var(--modern-gray-600);
    line-height: 1.7;
    font-size: 0.95rem;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    transition: var(--modern-transition);
}

.news-card:hover .news-excerpt {
    color: var(--modern-gray-700);
}

/* 按钮样式优化 */
.btn-outline-primary {
    border: 2px solid var(--modern-primary);
    color: var(--modern-primary);
    background: transparent;
    font-weight: 600;
    padding: var(--modern-space-md) var(--modern-space-2xl);
    border-radius: var(--modern-radius-lg);
    transition: var(--modern-transition);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
}

.btn-outline-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--modern-gradient-primary);
    transition: var(--modern-transition);
    z-index: -1;
}

.btn-outline-primary::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: var(--modern-radius-lg);
    background: var(--modern-gradient-primary);
    opacity: 0;
    transition: var(--modern-transition);
    z-index: -2;
}

.btn-outline-primary:hover::before {
    left: 0;
}

.btn-outline-primary:hover::after {
    opacity: 0.1;
    animation: pulse 2s infinite;
}

.btn-outline-primary:hover {
    color: var(--modern-white);
    border-color: transparent;
    transform: translateY(-2px);
    box-shadow: var(--modern-shadow-colored);
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .use-cases,
    .tech-architecture,
    .product-news {
        padding: var(--modern-space-4xl) 0;
    }
    
    .tech-features {
        padding-left: 0;
        margin-top: var(--modern-space-2xl);
    }
}

@media (max-width: 768px) {
    .use-cases,
    .tech-architecture,
    .product-news {
        padding: var(--modern-space-3xl) 0;
    }
    
    .use-case-card,
    .tech-feature,
    .news-card {
        padding: var(--modern-space-xl);
    }
    
    .tech-visual {
        height: 350px;
        margin-bottom: var(--modern-space-xl);
    }
    
    .tech-layers {
        width: 280px;
        height: 320px;
    }
    
    .tech-layer {
        height: 70px;
    }
    
    .use-case-icon {
        width: 64px;
        height: 64px;
    }
    
    .tech-feature-icon {
        width: 40px;
        height: 40px;
    }
    
    .layer-content {
        gap: var(--modern-space-sm);
    }
}

@media (max-width: 576px) {
    .use-case-card,
    .news-card {
        padding: var(--modern-space-lg);
    }
    
    .tech-feature {
        padding: var(--modern-space-lg);
        margin-bottom: var(--modern-space-lg);
    }
    
    .use-case-icon {
        width: 60px;
        height: 60px;
    }
    
    .use-case-icon i {
        font-size: 1.5rem;
    }
    
    .tech-layers {
        width: 240px;
        height: 280px;
    }
    
    .tech-layer {
        height: 60px;
        margin-bottom: var(--modern-space-sm);
    }
    
    .tech-feature-icon {
        width: 36px;
        height: 36px;
    }
    
    .tech-feature-icon i {
        font-size: 1rem;
    }
    
    .layer-content i {
        font-size: 1.5rem;
    }
    
    .layer-content span {
        font-size: 1rem;
    }
}

/* 特殊动画效果 */
@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

@keyframes glow {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 1; }
}

/* 鼠标跟踪效果 */
.news-card {
    transition: var(--modern-transition);
}

.news-card:hover {
    --x: var(--mouse-x, 50%);
    --y: var(--mouse-y, 50%);
}