/* ==========================================================================
   Art Mirror Digital Solutions - Digital Twin 视觉升级
   ========================================================================== */

/* ==========================================================================
   1. CSS 重置和基础样式
   ========================================================================== */

/* 现代 CSS 重置 */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

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

/* 移除列表样式 */
ul, ol {
    list-style: none;
}

/* 链接样式重置 */
a {
    text-decoration: none;
    color: inherit;
}

/* 按钮样式重置 */
button {
    border: none;
    background: none;
    cursor: pointer;
    font-family: inherit;
}

/* 图片响应式 */
img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* ==========================================================================
   2. Digital Twin 色彩系统
   ========================================================================== */

:root {
    /* 深度色彩系统 */
    --color-bg-deep: #050505;           /* 极深墨黑背景 */
    --color-bg-dark: #0A0A0A;           /* 深色背景 */
    --color-primary: #00C8FF;           /* 主色调 - 科技蓝 */
    --color-primary-glow: rgba(0, 200, 255, 0.3); /* 主色光晕 */
    --color-text: #FFFFFF;              /* 主文字色 */
    --color-text-glow: rgba(255, 255, 255, 0.8); /* 文字发光效果 */
    --color-text-secondary: #B0B0B0;    /* 次要文字色 */
    --color-text-muted: #808080;        /* 弱化文字色 */
    
    /* 透明度系统 */
    --opacity-glass: 0.08;              /* 玻璃态透明度 */
    --opacity-glow: 0.15;               /* 光晕透明度 */
    
    /* 间距系统 (基于 8px 网格) */
    --spacing-xs: 0.5rem;               /* 4px */
    --spacing-sm: 1rem;                 /* 8px */
    --spacing-md: 1.5rem;               /* 12px */
    --spacing-lg: 2rem;                 /* 16px */
    --spacing-xl: 3rem;                 /* 24px */
    --spacing-xxl: 4rem;                /* 32px */
    --spacing-xxxl: 6rem;               /* 48px */
    --spacing-hero: 10rem;              /* 80px - 英雄区域间距 */
    
    /* 字体大小 - Digital Twin 风格 */
    --font-size-xs: 0.75rem;            /* 12px */
    --font-size-sm: 0.875rem;           /* 14px */
    --font-size-base: 1rem;             /* 16px */
    --font-size-lg: 1.125rem;           /* 18px */
    --font-size-xl: 1.25rem;            /* 20px */
    --font-size-xxl: 1.5rem;            /* 24px */
    --font-size-xxxl: 2rem;             /* 32px */
    --font-size-hero-main: 4rem;        /* 64px - 主标题 */
    --font-size-hero-sub: 2.5rem;       /* 40px - 副标题 */
    
    /* 字体权重 - 工业感 */
    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-extrabold: 800;
    --font-weight-industrial: 900;      /* 工业级粗体 */
    
    /* 边框圆角 */
    --border-radius-sm: 0.25rem;         /* 4px */
    --border-radius-md: 0.5rem;         /* 8px */
    --border-radius-lg: 1rem;           /* 16px */
    --border-radius-xl: 2rem;           /* 32px */
    --border-radius-pill: 50px;         /* 药丸形状 */
    
    /* 阴影系统 - 光晕效果 */
    --shadow-glow-primary: 0 0 40px 8px rgba(0, 200, 255, 0.3);
    --shadow-glow-text: 0 0 20px rgba(255, 255, 255, 0.1);
    --shadow-glow-soft: 0 0 60px rgba(0, 200, 255, 0.15);
    
    /* 过渡动画 */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    --transition-glow: 0.8s ease-in-out;
    
    /* 响应式断点 */
    --breakpoint-mobile: 768px;
    --breakpoint-tablet: 1024px;
    --breakpoint-desktop: 1600px;
}

/* ==========================================================================
   3. 工具类
   ========================================================================== */

/* 容器类 */
.container {
    max-width: var(--breakpoint-desktop);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* 响应式容器 */
@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-md);
    }
}

/* 文本工具类 */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

/* 显示工具类 */
.flex { display: flex; }
.grid { display: grid; }
.hidden { display: none; }

/* 间距工具类 */
.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }

/* ==========================================================================
   4. 电影级导航栏样式
   ========================================================================== */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(5, 5, 5, 0.05);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.03);
    transition: all var(--transition-normal);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 110px;
}

/* Logo 样式 */
.logo {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.logo-text {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text);
    text-shadow: 0 0 20px rgba(0, 200, 255, 0.3);
}

.logo-subtitle {
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
    margin-top: var(--spacing-xs);
}

/* 导航菜单 */
.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.nav-links {
    display: flex;
    gap: var(--spacing-xl);
}

.nav-links a {
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
    transition: all var(--transition-normal);
    position: relative;
}

.nav-links a:hover {
    color: var(--color-text);
    text-shadow: 0 0 15px rgba(255, 255, 255, 0.5);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    transition: width var(--transition-normal);
    box-shadow: 0 0 15px var(--color-primary);
}

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

/* 语言切换 */
.language-toggle {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.lang-btn {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    transition: all var(--transition-normal);
}

.lang-btn.active {
    color: var(--color-primary);
    font-weight: var(--font-weight-semibold);
    text-shadow: 0 0 10px var(--color-primary);
}

.lang-btn:hover {
    color: var(--color-text);
    text-shadow: 0 0 10px rgba(255, 255, 255, 0.3);
}

.lang-separator {
    color: var(--color-text-muted);
}

/* CTA 按钮 */
.cta-btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    font-weight: var(--font-weight-semibold);
    transition: all var(--transition-normal);
}

.nav-cta {
    border: 2px solid var(--color-primary);
    color: var(--color-primary);
    background: transparent;
}

.nav-cta:hover {
    background: var(--color-primary);
    color: var(--color-bg-deep);
    transform: translateY(-2px);
    box-shadow: 0 0 30px var(--color-primary);
}

/* 移动端菜单切换 */
.mobile-toggle {
    display: none;
    font-size: var(--font-size-lg);
    color: var(--color-text);
}

/* ==========================================================================
   5. 电影级英雄区域样式
   ========================================================================== */

.cinematic-hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
    padding: 160px 0;
    background: #050505;
}

/* 分屏布局容器 */
.hero-split-container {
    position: relative;
    display: flex;
    align-items: center;
    min-height: 80vh;
    z-index: 2;
}

/* 左侧文案区域 */
.hero-content-left {
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding-right: var(--spacing-xl);
    z-index: 2;
    position: relative;
}

/* 电影级工业标题 */
.hero-title-cinematic {
    font-size: 4.5rem;
    font-weight: 900;
    line-height: 1.05;
    letter-spacing: -0.03em;
    margin-bottom: var(--spacing-lg);
    text-shadow: 0 0 30px rgba(0, 200, 255, 0.4);
}

.title-line-main {
    display: block;
    color: var(--color-text);
}

.title-line-sub {
    display: block;
    background: linear-gradient(135deg, #FFFFFF 0%, #00C8FF 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* 电影级副标题 */
.hero-subtitle-cinematic {
    font-size: var(--font-size-xl);
    color: var(--color-text-secondary);
    line-height: 1.6;
    margin-bottom: var(--spacing-xxxl);
    padding-right: var(--spacing-xl);
    font-weight: var(--font-weight-light);
}

/* 电影级 CTA 按钮组 */
.hero-cta-cinematic {
    display: flex;
    gap: var(--spacing-lg);
    align-items: center;
}

.cta-btn-cinematic {
    padding: var(--spacing-lg) var(--spacing-xxl);
    border-radius: var(--border-radius-pill);
    font-weight: var(--font-weight-semibold);
    transition: all var(--transition-glow);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.primary-cta-cinematic {
    background: var(--color-primary);
    color: var(--color-bg-deep);
    box-shadow: 0 0 40px 8px rgba(0, 200, 255, 0.4);
}

.primary-cta-cinematic:hover {
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 0 60px 12px rgba(0, 200, 255, 0.6);
}

.secondary-cta-cinematic {
    border: 2px solid var(--color-text-secondary);
    color: var(--color-text-secondary);
    background: transparent;
}

.secondary-cta-cinematic:hover {
    border-color: var(--color-text);
    color: var(--color-text);
    transform: translateY(-2px);
    text-shadow: 0 0 10px rgba(255, 255, 255, 0.3);
}

/* 右侧视觉区域 - 全屏沉浸式背景融合 */
.hero-visual-right {
    position: absolute;
    top: 0;
    right: 0;
    width: 65%;
    height: 100%;
    z-index: 1;
}

/* 原画底图容器 */
.hero-bg-image-container {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: flex-end;
}

/* 原画底图样式 - 全屏沉浸式铺满算法 */
.hero-bg-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center right;
    
    /* 消失的边界 - 平滑融合遮罩 */
    mask-image: linear-gradient(to right, transparent 0%, black 30%);
    -webkit-mask-image: linear-gradient(to right, transparent 0%, black 30%);
    
    /* 滤色融合技术 */
    mix-blend-mode: screen;
    
    /* 呼吸感动画 */
    animation: hero-bg-breathing 8s ease-in-out infinite;
    
    /* 蓝色光晕效果 */
    filter: drop-shadow(0 0 40px rgba(0, 200, 255, 0.3));
}

/* 呼吸感动画定义 */
@keyframes hero-bg-breathing {
    0%, 100% {
        opacity: 0.85;
        filter: drop-shadow(0 0 40px rgba(0, 200, 255, 0.3));
    }
    50% {
        opacity: 1;
        filter: drop-shadow(0 0 60px rgba(0, 200, 255, 0.5));
    }
}


/* 电影级滚动指示器 */
.scroll-indicator-cinematic {
    position: absolute;
    bottom: var(--spacing-xl);
    left: 50%;
    transform: translateX(-50%);
    animation: cinematic-bounce 2s infinite;
}

.scroll-arrow-cinematic {
    color: var(--color-text-secondary);
    font-size: var(--font-size-lg);
    text-shadow: 0 0 15px rgba(255, 255, 255, 0.3);
}

@keyframes cinematic-bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-10px);
    }
    60% {
        transform: translateY(-5px);
    }
}

/* ==========================================================================
   6. 响应式设计
   ========================================================================== */

/* 电影级平板设备 */
@media (max-width: 1024px) {
    .hero-split-container {
        text-align: center;
    }
    
    .hero-content-left {
        padding-right: 0;
    }
    
    .hero-visual-right {
        position: relative;
        width: 100%;
        height: 400px;
    }
    
    .hero-bg-image-container {
        max-width: 500px;
        min-height: 350px;
        justify-content: center;
    }
    
    .hero-bg-image {
        mask-image: linear-gradient(
            to bottom,
            transparent 0%,
            black 30%
        );
        -webkit-mask-image: linear-gradient(
            to bottom,
            transparent 0%,
            black 30%
        );
    }
    
    .hero-title-cinematic {
        font-size: 3.5rem;
    }
    
    .hero-subtitle-cinematic {
        padding-right: 0;
        font-size: var(--font-size-lg);
    }
    
    .hero-cta-cinematic {
        justify-content: center;
    }
    
    .core-bloom-effect {
        width: 150px;
        height: 150px;
    }
}

/* 电影级移动设备 */
@media (max-width: 768px) {
    .cinematic-hero {
        padding: 80px 0;
    }
    
    .hero-title-cinematic {
        font-size: 2.8rem;
        line-height: 1.1;
    }
    
    .hero-subtitle-cinematic {
        font-size: var(--font-size-base);
        line-height: 1.5;
    }
    
    .hero-cta-cinematic {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .cta-btn-cinematic {
        width: 100%;
        max-width: 280px;
        justify-content: center;
    }
    
    .hero-visual-right {
        height: 300px;
    }
    
    .hero-bg-image-container {
        max-width: 350px;
        min-height: 250px;
        justify-content: center;
    }
    
    .hero-bg-image {
        mask-image: linear-gradient(
            to bottom,
            transparent 0%,
            black 40%
        );
        -webkit-mask-image: linear-gradient(
            to bottom,
            transparent 0%,
            black 40%
        );
    }
    
    .core-bloom-effect {
        width: 120px;
        height: 120px;
    }
    
    /* 移动端导航 */
    .nav-links {
        display: none;
    }
    
    .language-toggle {
        display: none;
    }
    
    .mobile-toggle {
        display: block;
    }
    
    .nav-cta {
        display: none;
    }
}

/* 电影级小屏移动设备 */
@media (max-width: 480px) {
    .hero-title-cinematic {
        font-size: 2.2rem;
    }
    
    .hero-subtitle-cinematic {
        font-size: var(--font-size-sm);
    }
    
    .container {
        padding: 0 var(--spacing-md);
    }
    
    
    .hero-cta-cinematic {
        gap: var(--spacing-sm);
    }
    
    .cta-btn-cinematic {
        padding: var(--spacing-md) var(--spacing-xl);
    }
}

/* 电影级超大桌面设备 */
@media (min-width: 1600px) {
    .hero-split-container {
        max-width: 1400px;
        margin: 0 auto;
    }
    
    .hero-title-cinematic {
        font-size: 5rem;
    }
    
    
    .core-bloom-effect {
        width: 220px;
        height: 220px;
    }
}

/* 超高分辨率支持 */
@media (min-width: 2000px) {
    .hero-title-cinematic {
        font-size: 5.5rem;
    }
    
}

/* ==========================================================================
   7. 动画和交互
   ========================================================================== */

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

.fade-in-up {
    animation: fadeInUp 0.8s ease-out;
}

/* 缩放动画 */
@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.scale-in {
    animation: scaleIn 0.6s ease-out;
}

/* ==========================================================================
   8. 辅助样式
   ========================================================================== */


/* 页脚 */
.footer {
    padding: var(--spacing-xl) 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    color: var(--color-text-muted);
}

/* 无障碍访问 */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* 焦点样式 */
*:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* ==========================================================================
   9. 数字孪生背景效果
   ========================================================================== */

/* 数字网格背景 - 100px间距的极细蓝色网格 */
.digital-grid-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        linear-gradient(rgba(0, 200, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 200, 255, 0.03) 1px, transparent 1px);
    background-size: 100px 100px;
    background-position: center;
    z-index: -2;
    pointer-events: none;
    animation: grid-flow 20s linear infinite;
}

@keyframes grid-flow {
    0% {
        background-position: 0 0;
    }
    100% {
        background-position: 100px 100px;
    }
}

/* 数据粒子效果 - 径向发光层 */
.data-particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
        radial-gradient(circle at 20% 50%, rgba(0, 200, 255, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(0, 200, 255, 0.03) 0%, transparent 50%),
        radial-gradient(circle at 40% 80%, rgba(0, 200, 255, 0.02) 0%, transparent 50%);
    z-index: -1;
    pointer-events: none;
    animation: particles-drift 30s ease-in-out infinite;
}

@keyframes particles-drift {
    0%, 100% {
        opacity: 0.3;
        transform: translate(0, 0);
    }
    50% {
        opacity: 0.6;
        transform: translate(20px, 10px);
    }
}

/* ==========================================================================
   10. 打印样式
   ========================================================================== */

@media print {
    .navbar,
    .scroll-indicator,
    .hero-background,
    .digital-grid-bg,
    .data-particles {
        display: none;
    }
    
    body {
        background: white;
        color: black;
    }
}

/* ==========================================================================
   10. 品牌视觉集成与业务矩阵
   ========================================================================== */

/* 导航栏 Logo 样式 */
.nav-logo {
    height: 70px;
    width: auto;
    transition: all 0.3s ease;
    filter: drop-shadow(0 0 15px rgba(0, 200, 255, 0.4));
}

.nav-logo:hover {
    filter: drop-shadow(0 0 20px rgba(0, 200, 255, 0.6)) brightness(1.2);
}

/* 业务矩阵区域 */
.solutions-section {
    padding: var(--spacing-hero) 0;
    background:
        linear-gradient(to bottom, rgba(0, 200, 255, 0.1) 0%, transparent 400px),
        linear-gradient(to bottom, rgba(5, 5, 5, 0.95), var(--color-bg-deep));
    position: relative;
}

.solutions-header {
    text-align: center;
    margin-bottom: var(--spacing-hero);
    padding: 0 var(--spacing-xl);
}

/* 容器宽度优化 */
.solutions-section .container {
    max-width: 1600px;
    padding: 0 var(--spacing-xxl);
}

.solutions-header h2 {
    font-size: var(--font-size-xxxl);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-sm);
    background: linear-gradient(135deg, var(--color-text), var(--color-primary));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.section-subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    font-weight: var(--font-weight-normal);
    max-width: 600px;
    margin: 0 auto;
}

/* 业务网格布局 - 6列3+2对称矩阵 */
.solutions-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: var(--spacing-xl);
    max-width: 1600px;
    margin: 0 auto;
    justify-content: center;
}

/* 前三个卡片各占2列 */
.solution-card:nth-child(1),
.solution-card:nth-child(2),
.solution-card:nth-child(3) {
    grid-column: span 2;
}

/* 第4个卡片从第2列到第4列 */
.solution-card:nth-child(4) {
    grid-column: 2 / span 2;
}

/* 第5个卡片从第4列到第6列 */
.solution-card:nth-child(5) {
    grid-column: 4 / span 2;
}

/* 业务卡片基础样式 */
.solution-card {
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.05);
    background: #080808;
    border-radius: 12px;
    transition: all 0.6s ease;
    height: 500px;
    cursor: pointer;
}

/* 卡片背景图处理 */
.card-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-size: cover;
    background-position: center;
    opacity: 0.3;
    filter: grayscale(100%);
    transition: all 0.6s ease;
    z-index: 1;
    /* 渐变遮罩防止断层 */
    mask-image: linear-gradient(to bottom,
        rgba(0, 0, 0, 0.8) 0%,
        rgba(0, 0, 0, 0.6) 30%,
        rgba(0, 0, 0, 0.4) 70%,
        rgba(0, 0, 0, 0.2) 100%);
    -webkit-mask-image: linear-gradient(to bottom,
        rgba(0, 0, 0, 0.8) 0%,
        rgba(0, 0, 0, 0.6) 30%,
        rgba(0, 0, 0, 0.4) 70%,
        rgba(0, 0, 0, 0.2) 100%);
}

/* 卡片内容区域 */
.card-content {
    position: relative;
    z-index: 2;
    padding: var(--spacing-xl);
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    /* 内容渐变遮罩增强可读性 */
    background: linear-gradient(to bottom,
        rgba(8, 8, 8, 0.1) 0%,
        rgba(8, 8, 8, 0.3) 30%,
        rgba(8, 8, 8, 0.6) 70%,
        rgba(8, 8, 8, 0.8) 100%);
}

/* 解决方案图标样式 */
.solution-icon {
    width: 100px;
    height: 100px;
    margin-bottom: var(--spacing-lg);
    opacity: 0.85;
    filter: drop-shadow(0 0 12px rgba(0, 200, 255, 0.4));
    mix-blend-mode: screen;
    transition: all 0.6s ease;
}

.solution-card h3 {
    font-size: 2rem;
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-md);
    color: var(--color-text);
}

.solution-card p {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* Hover 激活态特效 */
.solution-card:hover {
    border-color: var(--color-primary);
    box-shadow: 0 0 40px rgba(0, 200, 255, 0.25);
    transform: translateY(-8px);
}

.solution-card:hover .card-bg {
    opacity: 0.5;
    filter: grayscale(0%) brightness(1.1);
    transform: scale(1.08);
}

.solution-card:hover .solution-icon {
    filter: drop-shadow(0 0 25px var(--color-primary)) brightness(1.2);
    opacity: 1;
    transform: translateY(-8px) scale(1.05);
}

/* 卡片内容悬停增强 */
.solution-card:hover .card-content {
    background: linear-gradient(to bottom,
        rgba(8, 8, 8, 0.2) 0%,
        rgba(8, 8, 8, 0.4) 30%,
        rgba(8, 8, 8, 0.7) 70%,
        rgba(8, 8, 8, 0.9) 100%);
}

/* 卡片标题悬停发光效果 */
.solution-card:hover h3 {
    text-shadow: 0 0 15px rgba(0, 200, 255, 0.6);
}

/* 卡片描述悬停增强 */
.solution-card:hover p {
    color: rgba(255, 255, 255, 0.9);
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .solutions-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-lg);
        max-width: 900px;
    }
    
    /* 在平板设备上重置3+2布局 */
    .solution-card:nth-child(4),
    .solution-card:nth-child(5) {
        grid-column: span 1;
    }
    
    .solution-card:nth-child(4) {
        grid-column: 1;
    }
    
    .solution-card:nth-child(5) {
        grid-column: 2;
    }
}

@media (max-width: 768px) {
    .solutions-section {
        padding: var(--spacing-xxxl) 0;
    }
    
    .solutions-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
        max-width: 500px;
    }
    
    .solution-card {
        height: 350px;
    }
    
    /* 在移动设备上重置所有网格列 */
    .solution-card:nth-child(4),
    .solution-card:nth-child(5) {
        grid-column: span 1;
    }
    
    .solutions-header h2 {
        font-size: var(--font-size-xxl);
    }
    
    .section-subtitle {
        font-size: var(--font-size-base);
    }
    
    /* 移动端图标调整 */
    .solution-icon {
        width: 80px;
        height: 80px;
    }
    
    .solution-card h3 {
        font-size: 1.5rem;
    }
    
    .solution-card p {
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .solution-card {
        height: 250px;
    }
    
    .card-content {
        padding: var(--spacing-lg);
    }
    
    .solution-icon {
        width: 48px;
        height: 48px;
    }
}

/* ==========================================================================
   11. 中国优势模块 - 玻璃态卡片样式
   ========================================================================== */

.advantage-section {
    padding: var(--spacing-hero) 0;
    background: linear-gradient(to bottom, var(--color-bg-deep), rgba(5, 5, 5, 0.95));
    position: relative;
}

.advantage-header {
    text-align: center;
    margin-bottom: var(--spacing-hero);
    padding: 0 var(--spacing-xl);
}

.advantage-header h2 {
    font-size: var(--font-size-xxxl);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-sm);
    background: linear-gradient(135deg, var(--color-text), var(--color-primary));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.advantage-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
    max-width: 1600px;
    margin: 0 auto;
}

/* 玻璃态卡片样式 */
.advantage-card {
    position: relative;
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: var(--spacing-xxl);
    transition: all 0.4s ease;
    min-height: 300px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    text-align: center;
    overflow: hidden;
}

.advantage-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: inherit;
    background-size: cover;
    background-position: center;
    opacity: 0.12;
    filter: grayscale(100%);
    transition: all 0.4s ease;
    z-index: -1;
}

.advantage-card:hover::before {
    opacity: 0.25;
    filter: grayscale(0%);
}

/* 卡片数字 - 透明描边效果 */
.card-num {
    position: absolute;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
    font-size: 4rem;
    font-weight: var(--font-weight-extrabold);
    color: transparent;
    -webkit-text-stroke: 1px rgba(255, 255, 255, 0.05);
    opacity: 0.05;
    line-height: 1;
    z-index: 0;
}

.advantage-card h3 {
    font-size: var(--font-size-xxl);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-md);
    color: var(--color-text);
    position: relative;
    z-index: 1;
}

.advantage-card p {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    line-height: 1.6;
    position: relative;
    z-index: 1;
}

/* 悬停效果 */
.advantage-card:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(0, 200, 255, 0.3);
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 200, 255, 0.1);
}

.advantage-card:hover h3 {
    color: var(--color-primary);
    text-shadow: 0 0 15px rgba(0, 200, 255, 0.4);
}

.advantage-card:hover p {
    color: rgba(255, 255, 255, 0.9);
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .advantage-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-lg);
        max-width: 900px;
    }
}

@media (max-width: 768px) {
    .advantage-section {
        padding: var(--spacing-xxxl) 0;
    }
    
    .advantage-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
        max-width: 500px;
    }
    
    .advantage-card {
        padding: var(--spacing-xl);
        min-height: 250px;
    }
    
    .card-num {
        font-size: 3rem;
        top: var(--spacing-md);
        right: var(--spacing-md);
    }
    
    .advantage-card h3 {
        font-size: var(--font-size-xl);
    }
    
    .advantage-card p {
        font-size: var(--font-size-base);
    }
}

/* ==========================================================================
   9. 全球支持模块样式
   ========================================================================== */

.global-support-section {
    padding: var(--spacing-hero) 0;
    background: linear-gradient(to bottom, rgba(0, 200, 255, 0.05), var(--color-bg-deep));
    position: relative;
}

.global-support-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xxxl);
    align-items: center;
    max-width: 1600px;
    margin: 0 auto;
}

.global-map-container {
    position: relative;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-glow-primary);
}

.global-map-image {
    width: 100%;
    height: auto;
    mix-blend-mode: screen;
    filter: brightness(1.1) contrast(1.2);
    transition: all var(--transition-normal);
}

.global-map-container:hover .global-map-image {
    filter: brightness(1.3) contrast(1.4) drop-shadow(0 0 30px rgba(0, 200, 255, 0.5));
}

.contact-form-container {
    padding: var(--spacing-xl);
}

.form-header {
    margin-bottom: var(--spacing-xl);
    text-align: center;
}

.form-header h2 {
    font-size: var(--font-size-xxxl);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-md);
    background: linear-gradient(135deg, var(--color-text), var(--color-primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.glass-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.form-group {
    position: relative;
}

.glass-form input,
.glass-form textarea,
.glass-form select {
    width: 100%;
    padding: var(--spacing-lg);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius-md);
    color: var(--color-text);
    font-family: 'Inter', sans-serif;
    font-size: var(--font-size-base);
    transition: all var(--transition-normal);
    backdrop-filter: blur(10px);
}

.glass-form input:focus,
.glass-form textarea:focus,
.glass-form select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 20px rgba(0, 200, 255, 0.3);
    background: rgba(255, 255, 255, 0.08);
}

.glass-form textarea {
    resize: vertical;
    min-height: 120px;
}

.glass-form select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%2300C8FF'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--spacing-lg) center;
    background-size: 20px;
}

.form-submit-btn {
    background: linear-gradient(135deg, var(--color-primary), #0088cc);
    color: white;
    border: none;
    padding: var(--spacing-lg) var(--spacing-xl);
    border-radius: var(--border-radius-pill);
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-size-lg);
    cursor: pointer;
    transition: all var(--transition-normal);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(0, 200, 255, 0.4);
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .global-support-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .global-map-container {
        order: 2;
    }
    
    .contact-form-container {
        order: 1;
    }
}

@media (max-width: 768px) {
    .global-support-section {
        padding: var(--spacing-xxxl) 0;
    }
    
    .contact-form-container {
        padding: var(--spacing-lg);
    }
    
    .glass-form input,
    .glass-form textarea,
    .glass-form select {
        padding: var(--spacing-md);
    }
}

/* ==========================================================================
   12. 浮动联系条 - 右侧悬浮联系工具
   ========================================================================== */

.floating-contact-bar {
    position: fixed;
    right: 0;
    top: 50%;
    transform: translateY(-50%) translateX(calc(100% - 60px));
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    z-index: 1000;
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.floating-contact-bar:hover {
    transform: translateY(-50%) translateX(0);
}

.contact-item {
    position: relative;
    display: flex;
    align-items: center;
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px 0 0 12px;
    padding: var(--spacing-md) var(--spacing-lg);
    transition: all 0.3s ease;
    cursor: pointer;
}

.contact-item:hover {
    background: rgba(255, 255, 255, 0.12);
    transform: translateX(-8px);
}

/* ==========================================================================
   13. 公司大数据看板 - 电路板背景统计展示
   ========================================================================== */

.company-stats-section {
    position: relative;
    padding: var(--spacing-hero) 0;
    overflow: hidden;
}

.stats-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-size: cover;
    background-position: center;
    opacity: 0.15;
    filter: brightness(0.8);
    z-index: -1;
}

.stats-content {
    position: relative;
    z-index: 1;
    text-align: center;
}

.stats-header {
    margin-bottom: var(--spacing-hero);
}

.stats-header h2 {
    font-size: var(--font-size-xxxl);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-sm);
    background: linear-gradient(135deg, var(--color-text), var(--color-primary));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
    max-width: 1200px;
    margin: 0 auto;
}

/* ==========================================================================
   14. 中文排版优化 - "呼吸感"补丁
   ========================================================================== */

body.lang-zh h1,
body.lang-zh h2,
body.lang-zh h3,
body.lang-zh h4,
body.lang-zh h5,
body.lang-zh h6 {
    letter-spacing: 0.05em;
    line-height: 1.3;
}

body.lang-zh .hero-title-cinematic .title-line-main,
body.lang-zh .hero-title-cinematic .title-line-sub {
    letter-spacing: 0.03em;
    line-height: 1.2;
}

body.lang-zh .advantage-header h2,
body.lang-zh .stats-header h2 {
    letter-spacing: 0.04em;
}

.stat-item {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: var(--spacing-xxl);
    transition: all 0.4s ease;
}

.stat-item:hover {
    background: rgba(255, 255, 255, 0.08);
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 200, 255, 0.2);
}

.stat-number {
    display: block;
    font-size: var(--font-size-xxxl);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.stat-label {
    display: block;
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    font-weight: var(--font-weight-medium);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .stats-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .stat-item {
        padding: var(--spacing-xl);
    }
    
    .stat-number {
        font-size: var(--font-size-xxl);
    }
    
    .stat-label {
        font-size: var(--font-size-base);
    }
}

.contact-icon {
    width: 32px;
    height: 32px;
    margin-right: var(--spacing-sm);
    mix-blend-mode: screen;
    transition: filter 0.3s ease;
}

.contact-item:hover .contact-icon {
    filter: drop-shadow(0 0 8px var(--color-primary));
}

.contact-label {
    white-space: nowrap;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text);
    opacity: 0;
    transform: translateX(-10px);
    transition: all 0.3s ease;
}

.floating-contact-bar:hover .contact-label {
    opacity: 1;
    transform: translateX(0);
}

/* ==========================================================================
   15. 入场动效 (Scroll Reveal)
   ========================================================================== */

.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease-out;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* 延迟效果，让元素顺次滑入 */
.solutions-section.reveal {
    transition-delay: 0.1s;
}

.advantage-section.reveal {
    transition-delay: 0.2s;
}

.company-stats-section.reveal {
    transition-delay: 0.3s;
}

/* 统计数字动画 */
.stat-number {
    transition: all 0.6s ease-out;
}

/* ==========================================================================
   16. 技术栈模块 - 玻璃态技术方块
   ========================================================================== */

.tech-stack-section {
    padding: var(--spacing-hero) 0;
    background: linear-gradient(to bottom, rgba(5, 5, 5, 0.95), var(--color-bg-deep));
    position: relative;
}

.tech-stack-header {
    text-align: center;
    margin-bottom: var(--spacing-hero);
}

.tech-stack-header h2 {
    font-size: var(--font-size-xxxl);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-sm);
    background: linear-gradient(135deg, var(--color-text), var(--color-primary));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.tech-stack-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
    max-width: 1200px;
    margin: 0 auto;
}

.tech-item {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    padding: var(--spacing-xl);
    text-align: center;
    transition: all 0.4s ease;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
}

.tech-item:hover {
    background: rgba(255, 255, 255, 0.08);
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 200, 255, 0.3);
    border-color: rgba(0, 200, 255, 0.3);
}

.tech-icon {
    width: 60px;
    height: 60px;
    background: var(--color-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: var(--color-bg-deep);
    transition: all 0.3s ease;
}

.tech-item:hover .tech-icon {
    transform: scale(1.1);
    box-shadow: 0 0 20px var(--color-primary);
}

.tech-name {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    color: var(--color-text);
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .tech-stack-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .tech-stack-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .tech-item {
        padding: var(--spacing-lg);
    }
    
    .tech-icon {
        width: 50px;
        height: 50px;
        font-size: var(--font-size-base);
    }
}

/* ==========================================================================
   17. 案例框架预设 - 1600px宽度静态模板
   ========================================================================== */

.cases-section {
    padding: var(--spacing-hero) 0;
    background: var(--color-bg-deep);
    position: relative;
}

.cases-header {
    text-align: center;
    margin-bottom: var(--spacing-hero);
}

.cases-header h2 {
    font-size: var(--font-size-xxxl);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-sm);
    background: linear-gradient(135deg, var(--color-text), var(--color-primary));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
    max-width: 1600px;
    margin: 0 auto;
}

.case-card {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    overflow: hidden;
    transition: all 0.4s ease;
}

.case-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 200, 255, 0.2);
}

.case-image {
    height: 200px;
    background: rgba(255, 255, 255, 0.03);
    display: flex;
    align-items: center;
    justify-content: center;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.placeholder-image {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    font-style: italic;
}

.case-content {
    padding: var(--spacing-xl);
}

.case-content h3 {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
}

.case-content p {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    line-height: 1.5;
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .cases-grid {
        grid-template-columns: repeat(2, 1fr);
        max-width: 1000px;
    }
}

@media (max-width: 768px) {
    .cases-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .case-image {
        height: 150px;
    }
    
    .case-content {
        padding: var(--spacing-lg);
    }
}

/* ==========================================================================
   18. 回到顶部按钮 - 数字孪生美学
   ========================================================================== */

.back-to-top {
    position: fixed;
    right: 30px;
    bottom: 30px;
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(10px);
    border: 1px solid var(--color-primary);
    border-radius: 50%;
    color: var(--color-primary);
    font-size: var(--font-size-lg);
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 1001;
    display: flex;
    align-items: center;
    justify-content: center;
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: rgba(0, 200, 255, 0.1);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 200, 255, 0.3);
}

/* 移动端适配 */
@media (max-width: 768px) {
    .back-to-top {
        right: 20px;
        bottom: 20px;
        width: 45px;
        height: 45px;
        font-size: var(--font-size-base);
    }
}

.stat-number.reveal {
    opacity: 0;
    transform: scale(0.8);
}

.stat-number.reveal.active {
    opacity: 1;
    transform: scale(1);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .floating-contact-bar {
        transform: translateY(-50%) translateX(calc(100% - 40px));
    }
    
    .floating-contact-bar:hover {
        transform: translateY(-50%) translateX(0);
    }
    
    .contact-item {
        padding: var(--spacing-xs) var(--spacing-sm);
        min-width: auto;
    }
    
    .contact-icon {
        width: 26px;
        height: 26px;
        margin-right: 0;
    }
    
    .contact-label {
        font-size: var(--font-size-xs);
        display: none;
    }
    
    .floating-contact-bar:hover .contact-label {
        display: block;
    }
    
    /* 联系表单移动端适配 */
    .global-support-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    
    .contact-form-container {
        width: 100%;
        padding: var(--spacing-lg);
    }
    
    .glass-form input,
    .glass-form textarea,
    .glass-form select {
        width: 100%;
        padding: var(--spacing-md);
    }
    
    /* 中文排版呼吸感优化 */
    body.lang-zh h1,
    body.lang-zh h2,
    body.lang-zh h3,
    body.lang-zh h4,
    body.lang-zh h5,
    body.lang-zh h6 {
        letter-spacing: 0.03em;
        line-height: 1.4;
    }
    
    body.lang-zh .hero-title-cinematic .title-line-main,
    body.lang-zh .hero-title-cinematic .title-line-sub {
        letter-spacing: 0.02em;
        line-height: 1.3;
    }
}

/* ==========================================================================
   12. 新增功能样式
   ========================================================================== */

/* 弹窗样式 */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(10px);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.modal-overlay.active {
    opacity: 1;
}

.glass-modal {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 20px;
    padding: 2rem;
    max-width: 800px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    position: relative;
    transform: translateY(20px);
    transition: transform 0.3s ease;
}

.modal-overlay.active .glass-modal {
    transform: translateY(0);
}

.modal-close-btn {
    position: absolute;
    top: 1rem;
    right: 1rem;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    transition: background 0.3s ease;
}

.modal-close-btn:hover {
    background: rgba(255, 255, 255, 0.2);
}

.modal-header {
    margin-bottom: 1.5rem;
}

.modal-title {
    font-size: 1.8rem;
    font-weight: 700;
    color: white;
}

.modal-content {
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.6;
}

.modal-tech-logic {
    font-size: 1.1rem;
    line-height: 1.7;
}

.tech-illustration {
    margin-bottom: 1.5rem;
    text-align: center;
}

.tech-image {
    max-width: 100%;
    height: auto;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}

.tech-content {
    margin-top: 1rem;
}

/* 视频弹窗 */
.video-modal {
    max-width: 1000px;
    padding: 1rem;
}

.modal-video-container {
    width: 100%;
    aspect-ratio: 16/9;
    border-radius: 10px;
    overflow: hidden;
}

.modal-video-player {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* 案例卡片增强样式 */
.case-image-real {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 10px 10px 0 0;
}

.case-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.3);
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    transition: opacity 0.3s ease;
    border-radius: 10px 10px 0 0;
}

.case-image:hover .case-overlay {
    opacity: 1;
}

.case-play-btn {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.9);
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    transition: transform 0.3s ease, background 0.3s ease;
}

.case-play-btn:hover {
    transform: scale(1.1);
    background: white;
}

.case-tech-btn {
    margin-top: 1rem;
    padding: 0.5rem 1.5rem;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    color: white;
    border-radius: 25px;
    font-weight: 600;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.case-tech-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(0, 123, 255, 0.3);
}

/* 表单提交反馈 */
.submission-feedback {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 1rem 1.5rem;
    border-radius: 10px;
    color: white;
    font-weight: 600;
    z-index: 10000;
    transform: translateX(100%);
    opacity: 0;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

.submission-feedback.show {
    transform: translateX(0);
    opacity: 1;
}

.submission-feedback.success {
    background: linear-gradient(135deg, #4CAF50, #45a049);
    box-shadow: 0 5px 15px rgba(76, 175, 80, 0.3);
}

.submission-feedback.error {
    background: linear-gradient(135deg, #f44336, #d32f2f);
    box-shadow: 0 5px 15px rgba(244, 67, 54, 0.3);
}

/* 响应式调整 */
@media (max-width: 768px) {
    .glass-modal {
        width: 95%;
        padding: 1.5rem;
    }
    
    .modal-title {
        font-size: 1.5rem;
    }
    
    .case-image-real {
        height: 150px;
    }
    
    .submission-feedback {
        top: 10px;
        right: 10px;
        left: 10px;
        text-align: center;
    }
}