/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: var(--line-height-relaxed);
    color: var(--text-secondary);
    background-color: var(--bg-gray);
    background-image: var(--pattern-dots), var(--pattern-wave), var(--bg-gradient-subtle);
    background-size: 40px 40px, 80px 80px, 100% 100%;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    position: relative;
    letter-spacing: var(--letter-spacing-normal);
}

/* 颜色变量 */
:root {
    /* 主色调 */
    --primary-color: #002d58;
    --primary-light: #004b8d;
    --primary-dark: #001e3c;
    --primary-accent: #0066cc;
    
    /* 辅助色 */
    --secondary-color: #0088cc;
    --secondary-light: #00a3e0;
    --secondary-dark: #005c99;
    
    /* 强调色 */
    --accent-color: #1a5fff;
    --accent-light: #4d88ff;
    --accent-dark: #0040cc;
    --accent-glow: #3377ff;
    
    /* 功能色 */
    --success-color: #167d33;
    --success-light: #1db84b;
    --success-dark: #0d6227;
    --warning-color: #d69e00;
    --warning-light: #ffc107;
    --warning-dark: #b38600;
    --danger-color: #b71c1c;
    --danger-light: #d32f2f;
    --danger-dark: #8d1313;
    
    /* 文本色 */
    --text-primary: #000a1a;
    --text-secondary: #1a233d;
    --text-muted: #4a546a;
    
    /* 背景色 */
    --bg-light: #ffffff;
    --bg-gray: #f0f4fa;
    --bg-gray-dark: #e6eff9;
    
    /* 渐变效果（增强版） */
    --bg-gradient: linear-gradient(135deg, #ffffff 0%, #f0f4fa 60%, #e6eff9 100%);
    --bg-gradient-inverse: linear-gradient(135deg, #002d58 0%, #004b8d 60%, #0066cc 100%);
    --bg-gradient-subtle: linear-gradient(120deg, rgba(0, 45, 88, 0.02) 0%, rgba(0, 102, 204, 0.01) 50%, rgba(0, 153, 255, 0.02) 100%);
    --bg-gradient-deep: linear-gradient(145deg, #001e3c 0%, #004b8d 50%, #0066cc 100%);
    --bg-gradient-soft: linear-gradient(135deg, rgba(255, 255, 255, 0.95) 0%, rgba(240, 244, 250, 0.95) 100%);
    
    /* 装饰性渐变 */
    --gradient-accent: linear-gradient(135deg, var(--accent-color), var(--secondary-color));
    --gradient-primary: linear-gradient(135deg, var(--primary-dark), var(--primary-light));
    --gradient-shine: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    --gradient-glow: linear-gradient(135deg, rgba(0, 102, 204, 0.1), rgba(0, 153, 255, 0.05));
    
    /* 阴影效果 */
    --card-shadow: 0 12px 35px rgba(0, 45, 88, 0.12), 0 4px 15px rgba(0, 45, 88, 0.06), inset 0 1px 0 rgba(255, 255, 255, 0.95);
    --card-hover-shadow: 0 35px 70px rgba(0, 45, 88, 0.32), 0 20px 40px rgba(0, 75, 141, 0.24), inset 0 1px 0 rgba(255, 255, 255, 0.85);
    --border-color: rgba(0, 45, 88, 0.25);
    --border-light: rgba(0, 45, 88, 0.15);
    --border-glow: rgba(0, 102, 204, 0.35);
    --border-gradient: linear-gradient(135deg, rgba(0, 102, 204, 0.3), rgba(0, 153, 255, 0.2), rgba(0, 102, 204, 0.3));
    --shadow-inner: inset 0 2px 8px rgba(0, 0, 0, 0.05), inset 0 1px 0 rgba(255, 255, 255, 0.85);
    --shadow-outer: 0 8px 30px rgba(0, 45, 88, 0.15), 0 2px 8px rgba(0, 45, 88, 0.08);
    --shadow-glow: 0 0 25px rgba(0, 102, 204, 0.25), 0 0 10px rgba(0, 102, 204, 0.15);
    --shadow-card: 0 12px 40px rgba(0, 45, 88, 0.12), 0 4px 16px rgba(0, 45, 88, 0.06), inset 0 1px 0 rgba(255, 255, 255, 0.95);
    --shadow-card-hover: 0 35px 80px rgba(0, 75, 141, 0.25), 0 20px 45px rgba(0, 105, 217, 0.18), inset 0 1px 0 rgba(255, 255, 255, 0.85);
    --shadow-button: 0 6px 20px rgba(0, 102, 204, 0.3), 0 2px 8px rgba(0, 102, 204, 0.15);
    --shadow-button-hover: 0 15px 45px rgba(0, 102, 204, 0.45), 0 5px 20px rgba(0, 102, 204, 0.25), 0 0 25px var(--shadow-glow);
    --shadow-header: 0 6px 30px rgba(0, 45, 88, 0.1), 0 1px 3px rgba(0, 45, 88, 0.06);
    --shadow-header-scrolled: 0 8px 40px rgba(0, 45, 88, 0.15), 0 2px 8px rgba(0, 45, 88, 0.08);
    
    /* 纹理图案 */
    --pattern-dots: radial-gradient(circle at 1px 1px, rgba(0, 45, 88, 0.03) 1px, transparent 1px);
    --pattern-grid: linear-gradient(rgba(0, 45, 88, 0.02) 1px, transparent 1px), linear-gradient(90deg, rgba(0, 45, 88, 0.02) 1px, transparent 1px);
    --pattern-wave: repeating-linear-gradient(45deg, transparent, transparent 10px, rgba(0, 102, 204, 0.01) 10px, rgba(0, 102, 204, 0.01) 20px);
    
    /* 排版变量 */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    --font-heading: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    
    /* 字体大小 */
    --font-size-xs: 0.875rem;
    --font-size-sm: 0.9375rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    --font-size-6xl: 4rem;
    --font-size-7xl: 5rem;
    
    /* 字体粗细 */
    --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-black: 900;
    
    /* 行高 */
    --line-height-tight: 1.25;
    --line-height-snug: 1.375;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.625;
    --line-height-loose: 1.75;
    
    /* 字间距 */
    --letter-spacing-tight: -0.02em;
    --letter-spacing-normal: 0em;
    --letter-spacing-wide: 0.02em;
    
    /* 间距变量 */
    --spacing-1: 0.25rem;
    --spacing-2: 0.5rem;
    --spacing-3: 0.75rem;
    --spacing-4: 1rem;
    --spacing-5: 1.25rem;
    --spacing-6: 1.5rem;
    --spacing-8: 2rem;
    --spacing-10: 2.5rem;
    --spacing-12: 3rem;
    --spacing-16: 4rem;
    --spacing-20: 5rem;
    --spacing-24: 6rem;
    --spacing-32: 8rem;
    --spacing-40: 10rem;
    --spacing-48: 12rem;
    
    /* 边界半径 */
    --border-radius-sm: 8px;
    --border-radius-md: 12px;
    --border-radius-lg: 16px;
    --border-radius-xl: 20px;
    --border-radius-2xl: 24px;
    --border-radius-3xl: 32px;
    --border-radius-full: 9999px;
}

/* 标题样式 */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
    color: var(--text-primary);
    letter-spacing: var(--letter-spacing-tight);
    margin: 0;
}

h1 {
    font-size: clamp(var(--font-size-5xl), 8vw, var(--font-size-7xl));
    font-weight: var(--font-weight-extrabold);
    background: linear-gradient(135deg, var(--text-primary), var(--primary-color));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

h2 {
    font-size: clamp(var(--font-size-4xl), 6vw, var(--font-size-6xl));
    font-weight: var(--font-weight-extrabold);
    margin-bottom: var(--spacing-8);
    background: linear-gradient(135deg, var(--text-primary), var(--primary-dark));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    position: relative;
    display: inline-block;
}

h2::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color), var(--accent-color));
    border-radius: 2px;
    opacity: 0.8;
    box-shadow: 0 2px 10px rgba(0, 102, 204, 0.2);
    animation: headingUnderline 2s ease-in-out infinite;
}

/* 标题下划线动画 */
@keyframes headingUnderline {
    0%, 100% {
        transform: scaleX(1);
        opacity: 0.8;
    }
    50% {
        transform: scaleX(1.05);
        opacity: 1;
        box-shadow: 0 3px 15px rgba(0, 102, 204, 0.3);
    }
}

h3 {
    font-size: clamp(var(--font-size-3xl), 4vw, var(--font-size-4xl));
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-6);
    color: var(--primary-color);
}

h4 {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-4);
    color: var(--primary-dark);
}

h5 {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-3);
    color: var(--text-primary);
}

h6 {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-2);
    color: var(--text-primary);
}

/* 段落样式 */
p {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: var(--line-height-relaxed);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-6);
    letter-spacing: var(--letter-spacing-normal);
}

/* 链接样式 */
a {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: var(--line-height-relaxed);
    color: var(--accent-color);
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    display: inline-block;
}

a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

a:hover {
    color: var(--primary-dark);
    transform: translateY(-2px);
}

a:hover::after {
    width: 100%;
}

/* 滚动进度指示器 */
.progress-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: transparent;
    z-index: 1001;
    pointer-events: none;
}

.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-dark), var(--primary-accent), var(--secondary-color));
    width: 0%;
    box-shadow: 0 0 15px var(--shadow-glow), 0 0 5px var(--accent-glow);
    transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: 0 3px 3px 0;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-5);
}

/* 区域间距 */
section {
    padding: var(--spacing-24) 0;
    position: relative;
}

section:first-child {
    padding-top: calc(var(--spacing-32) + 70px);
}

/* 卡片间距 */
.service-card, .case-card, .team-card, .contact-card {
    margin-bottom: var(--spacing-8);
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 导航栏 */
header {
    background: var(--bg-gradient-soft);
    box-shadow: var(--shadow-header), 0 1px 0 rgba(255, 255, 255, 0.9) inset;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border-bottom: 1px solid var(--border-light);
    background-image: var(--pattern-grid);
    background-size: 60px 60px;
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-3) var(--spacing-5);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 公司logo容器 */
.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
}

/* 公司logo样式 */
.company-logo {
    height: 40px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    filter: drop-shadow(0 2px 10px rgba(0, 86, 179, 0.1));
    border-radius: 8px;
    padding: 2px;
    background: linear-gradient(135deg, rgba(0, 153, 255, 0.15), rgba(0, 74, 143, 0.05));
}

/* 公司名称样式 */
.company-name {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-extrabold);
    color: var(--primary-color);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}    font-family: 'Inter', sans-serif;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
    letter-spacing: -0.5px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.company-logo:hover {
    transform: scale(1.08) rotateY(15deg);
    filter: drop-shadow(0 4px 20px rgba(0, 74, 143, 0.4));
    background: linear-gradient(135deg, rgba(0, 153, 255, 0.25), rgba(0, 74, 143, 0.15));
}

/* logo容器悬停效果 */
.logo:hover .company-name {
    color: var(--primary-accent);
    text-shadow: 0 2px 10px rgba(0, 102, 204, 0.2);
    transform: translateX(5px);
}

/* 导航菜单 */
nav ul {
    display: flex;
    list-style: none;
    gap: var(--spacing-2);
    margin: 0;
    padding: 0;
}

nav ul li {
    margin-left: var(--spacing-5);
    position: relative;
}

nav ul li a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: var(--font-weight-medium);
    padding: var(--spacing-3) var(--spacing-5);
    border-radius: var(--border-radius-full);
    position: relative;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    display: inline-block;
    backdrop-filter: blur(5px);
    border: 1px solid transparent;
    transform-style: preserve-3d;
    perspective: 1000px;
}

/* 导航链接悬停效果 */
nav ul li a::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 74, 143, 0.22), transparent);
    transition: left 0.6s ease;
    z-index: 0;
}

/* 导航链接下边框效果 */
nav ul li a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%) scaleX(0) scaleY(0.8);
    width: 80%;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 3px;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    opacity: 0;
    z-index: 0;
    box-shadow: 0 2px 10px rgba(0, 86, 179, 0.3);
}

nav ul li a:hover {
    color: var(--primary-color);
    background-color: rgba(0, 74, 143, 0.12);
    transform: translateY(-3px) scale(1.02) rotateX(2deg);
    box-shadow: 0 8px 25px rgba(0, 74, 143, 0.25);
    border-color: rgba(0, 86, 179, 0.25);
}

nav ul li a:hover::before {
    left: 100%;
}

nav ul li a:hover::after {
    transform: translateX(-50%) scaleX(1) scaleY(1);
    opacity: 1;
}

/* 导航链接文字 */
nav ul li a span {
    position: relative;
    z-index: 1;
}

/* 导航栏滚动效果 */
header.scrolled {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.99) 0%, rgba(255, 255, 255, 0.98) 100%);
    box-shadow: var(--shadow-header-scrolled);
    padding: 10px 0;
}

header.scrolled .container {
    padding: 10px 20px;
}

header.scrolled .company-logo {
    height: 35px;
}

header.scrolled .company-name {
    font-size: 18px;
}

/* 主要内容区域 */
main {
    margin-top: 70px;
}

/* 英雄区域 */
.hero {
    background: linear-gradient(135deg, #002a4d 0%, #005a9e 50%, #007acc 100%);
    color: #fff;
    padding: var(--spacing-48) 0 var(--spacing-40);
    text-align: center;
    position: relative;
    overflow: hidden;
    box-shadow: inset 0 -1px 20px rgba(0, 0, 0, 0.2);
}

/* 英雄区域装饰 - 简化版 */
.hero::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 500px;
    height: 500px;
    transform: translate(-50%, -50%);
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    z-index: 0;
    filter: blur(40px);
    opacity: 0.6;
}



/* 浮动动画 - 更自然的流动效果 */
@keyframes float {
    0% {
        transform: translate(0, 0) rotate(0deg);
    }
    20% {
        transform: translate(-15px, -8px) rotate(72deg);
    }
    40% {
        transform: translate(-30px, -18px) rotate(144deg);
    }
    60% {
        transform: translate(-25px, -30px) rotate(216deg);
    }
    80% {
        transform: translate(-10px, -38px) rotate(288deg);
    }
    100% {
        transform: translate(0, -45px) rotate(360deg);
    }
}

/* 呼吸动画 - 更自然的缩放和透明度变化 */
@keyframes breathe {
    0%, 100% {
        transform: translate(-50%, -50%) scale(0.8) rotate(0deg);
        opacity: 0.4;
        animation-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
    }
    30% {
        transform: translate(-51%, -50%) scale(0.92) rotate(1deg);
        opacity: 0.55;
        animation-timing-function: cubic-bezier(0.68, -0.55, 0.265, 1.55);
    }
    50% {
        transform: translate(-49%, -50%) scale(1.1) rotate(0deg);
        opacity: 0.8;
        animation-timing-function: cubic-bezier(0.68, -0.55, 0.265, 1.55);
    }
    70% {
        transform: translate(-50.5%, -50%) scale(0.95) rotate(-1deg);
        opacity: 0.65;
        animation-timing-function: cubic-bezier(0.68, -0.55, 0.265, 1.55);
    }
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-content h2 {
    font-size: clamp(var(--font-size-5xl), 8vw, var(--font-size-7xl));
    margin-bottom: var(--spacing-8);
    font-weight: var(--font-weight-extrabold);
    line-height: var(--line-height-tight);
    opacity: 0;
    animation: heroTitle 1.2s cubic-bezier(0.215, 0.61, 0.355, 1) forwards 0.5s;
    background: linear-gradient(135deg, #ffffff, rgba(255, 255, 255, 0.95), rgba(255, 255, 255, 0.9));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    position: relative;
    text-shadow: 0 2px 20px rgba(0, 0, 0, 0.2);
    letter-spacing: var(--letter-spacing-tight);
}

.hero-content h2::after {
    content: '';
    position: absolute;
    bottom: -12px;
    left: 50%;
    transform: translateX(-50%);
    width: 140px;
    height: 5px;
    background: linear-gradient(90deg, transparent, #ffffff, transparent);
    border-radius: 3px;
    animation: pulse 2s ease-in-out infinite;
    box-shadow: 0 0 20px rgba(255, 255, 255, 0.6);
}

/* 标题动画 */
@keyframes heroTitle {
    0% {
        opacity: 0;
        transform: translateY(40px) scale(0.9);
        filter: blur(10px);
    }
    100% {
        opacity: 1;
        transform: translateY(0) scale(1);
        filter: blur(0);
    }
}

/* 脉冲动画改进 */
@keyframes pulse {
    0%, 100% {
        opacity: 0.6;
        transform: translateX(-50%) scaleX(1);
        box-shadow: 0 0 15px rgba(255, 255, 255, 0.5);
    }
    50% {
        opacity: 1;
        transform: translateX(-50%) scaleX(1.3);
        box-shadow: 0 0 25px rgba(255, 255, 255, 0.8);
    }
}

.hero-content p {
    font-size: clamp(var(--font-size-lg), 3vw, var(--font-size-2xl));
    margin-bottom: var(--spacing-12);
    opacity: 0;
    animation: heroParagraph 1.2s cubic-bezier(0.215, 0.61, 0.355, 1) forwards 1.2s;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    line-height: var(--line-height-snug);
    color: rgba(255, 255, 255, 0.95);
    text-shadow: 0 1px 10px rgba(0, 0, 0, 0.2);

    padding: 0 var(--spacing-6);
    letter-spacing: var(--letter-spacing-wide);
    font-weight: var(--font-weight-medium);
}

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

/* 滚动触发动画 - 淡入上移 (增强版) */
.scroll-reveal {
    opacity: 0;
    transform: translateY(60px) rotateX(10deg) rotateZ(-1deg);
    transition: opacity 1.1s cubic-bezier(0.165, 0.84, 0.44, 1), transform 1.1s cubic-bezier(0.165, 0.84, 0.44, 1);
    will-change: opacity, transform;
    transition-delay: 0.1s;
}

.scroll-reveal.revealed {
    opacity: 1;
    transform: translateY(0) rotateX(0) rotateZ(0);
    transition-delay: 0s;
}

/* 滚动触发动画 - 淡入 (增强版) */
.scroll-fade {
    opacity: 0;
    filter: blur(2px);
    transition: opacity 1.3s cubic-bezier(0.165, 0.84, 0.44, 1), filter 1.3s cubic-bezier(0.165, 0.84, 0.44, 1);
    will-change: opacity, filter;
    transition-delay: 0.2s;
}

.scroll-fade.revealed {
    opacity: 1;
    filter: blur(0);
    transition-delay: 0s;
}

/* 滚动触发动画 - 左滑进入 (增强版) */
.scroll-slide-left {
    opacity: 0;
    transform: translateX(80px) rotateY(-5deg) scale(0.95);
    transition: opacity 1s cubic-bezier(0.165, 0.84, 0.44, 1), transform 1s cubic-bezier(0.165, 0.84, 0.44, 1);
    will-change: opacity, transform;
    transition-delay: 0.15s;
}

.scroll-slide-left.revealed {
    opacity: 1;
    transform: translateX(0) rotateY(0) scale(1);
    transition-delay: 0s;
}

/* 滚动触发动画 - 右滑进入 (增强版) */
.scroll-slide-right {
    opacity: 0;
    transform: translateX(-80px) rotateY(5deg) scale(0.95);
    transition: opacity 1s cubic-bezier(0.165, 0.84, 0.44, 1), transform 1s cubic-bezier(0.165, 0.84, 0.44, 1);
    will-change: opacity, transform;
    transition-delay: 0.15s;
}

.scroll-slide-right.revealed {
    opacity: 1;
    transform: translateX(0) rotateY(0) scale(1);
    transition-delay: 0s;
}

/* 新增：滚动触发动画 - 缩放进入 */
.scroll-scale {
    opacity: 0;
    transform: scale(0.85) rotateX(15deg);
    transition: opacity 1.2s cubic-bezier(0.165, 0.84, 0.44, 1), transform 1.2s cubic-bezier(0.165, 0.84, 0.44, 1);
    will-change: opacity, transform;
    transition-delay: 0.2s;
}

.scroll-scale.revealed {
    opacity: 1;
    transform: scale(1) rotateX(0);
    transition-delay: 0s;
}

/* 新增：滚动触发动画 - 3D翻转进入 */
.scroll-flip {
    opacity: 0;
    transform: perspective(1000px) rotateY(-90deg) rotateX(10deg);
    transition: opacity 1.3s cubic-bezier(0.165, 0.84, 0.44, 1), transform 1.3s cubic-bezier(0.165, 0.84, 0.44, 1);
    will-change: opacity, transform;
    transform-style: preserve-3d;
    transition-delay: 0.25s;
}

.scroll-flip.revealed {
    opacity: 1;
    transform: perspective(1000px) rotateY(0) rotateX(0);
    transition-delay: 0s;
}

/* 新增：滚动触发动画 - 波浪式进入 */
.scroll-wave {
    opacity: 0;
    transform: translateY(50px) rotateZ(5deg);
    transition: opacity 1.1s cubic-bezier(0.165, 0.84, 0.44, 1), transform 1.1s cubic-bezier(0.165, 0.84, 0.44, 1);
    will-change: opacity, transform;
    transition-delay: 0.1s;
}

.scroll-wave.revealed {
    opacity: 1;
    transform: translateY(0) rotateZ(0);
    transition-delay: 0s;
}

/* 段落动画 */
@keyframes heroParagraph {
    0% {
        opacity: 0;
        transform: translateY(30px);
        filter: blur(5px);
    }
    100% {
        opacity: 0.95;
        transform: translateY(0);
        filter: blur(0);
    }
}

.hero-buttons {
    display: flex;
    justify-content: center;
    gap: 25px;
    opacity: 0;
    animation: heroButtons 1.2s cubic-bezier(0.215, 0.61, 0.355, 1) forwards 1.8s;
    flex-wrap: wrap;
}

/* 按钮容器动画 */
@keyframes heroButtons {
    0% {
        opacity: 0;
        transform: translateY(20px) scale(0.95);
        filter: blur(5px);
    }
    100% {
        opacity: 1;
        transform: translateY(0) scale(1);
        filter: blur(0);
    }
}

/* 按钮样式改进 */
.btn {
    display: inline-block;
    padding: var(--spacing-4) calc(var(--spacing-8) + var(--spacing-1));
    border-radius: var(--border-radius-full);
    text-decoration: none;
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-lg);
    line-height: var(--line-height-tight);
    letter-spacing: var(--letter-spacing-normal);
    transition: all 0.5s cubic-bezier(0.165, 0.84, 0.44, 1);
    cursor: pointer;
    position: relative;
    overflow: hidden;
    border: 3px solid transparent;
    box-shadow: var(--shadow-button);
    backdrop-filter: blur(10px);
    transform-style: preserve-3d;
    perspective: 1000px;
    animation: subtleFloat 4s ease-in-out infinite alternate;
}

/* 微妙的浮动动画 */
@keyframes subtleFloat {
    0%, 100% {
        transform: translateY(0) scale(1);
        animation-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
    }
    50% {
        transform: translateY(-5px) scale(1.01);
        animation-timing-function: cubic-bezier(0.68, -0.55, 0.265, 1.55);
    }
}

/* 主按钮 */
.btn-primary {
    background: linear-gradient(135deg, #007acc 0%, #005a9e 100%);
    color: #ffffff;
    border: 2px solid transparent;
    background-clip: padding-box;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 122, 204, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 122, 204, 0.4);
    background: linear-gradient(135deg, #0099ff 0%, #007acc 100%);
    border-color: rgba(255, 255, 255, 0.3);
}

/* 次要按钮 */
.btn-secondary {
    background: transparent;
    color: #ffffff;
    border: 2px solid rgba(255, 255, 255, 0.3);
    transition: all 0.3s ease;
    position: relative;
}

.btn-secondary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.25);
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.5);
}
    left: 100%;
}



.btn-link {
    color: var(--primary-accent);
    text-decoration: none;
    padding: 0;
    font-weight: 600;
    position: relative;
    display: inline-block;
    transition: all 0.3s ease;
}

.btn-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 3px;
    bottom: -2px;
    left: 0;
    background: linear-gradient(90deg, var(--primary-accent), var(--secondary-color));
    transition: width 0.3s ease;
    border-radius: 2px;
}

.btn-link:hover {
    text-decoration: none;
    color: var(--primary-dark);
    transform: translateY(-1px);
}

.btn-link:hover::after {
    width: 100%;
    box-shadow: 0 2px 8px rgba(0, 122, 204, 0.3);
}

/* 章节标题 */
.section-header {
    text-align: center;
    margin-bottom: 80px;
    position: relative;
    padding: 0 20px;
}

.section-header h3 {
    font-size: clamp(36px, 6vw, 48px);
    color: var(--text-primary);
    margin-bottom: 30px;
    font-weight: 900;
    letter-spacing: -0.04em;
    position: relative;
    display: inline-block;
    padding: 0 30px;
    line-height: 1.1;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

.section-header h3::after {
    content: '';
    position: absolute;
    bottom: -20px;
    left: 50%;
    transform: translateX(-50%);
    width: 120px;
    height: 6px;
    background: linear-gradient(90deg, var(--primary-color), var(--primary-light), var(--secondary-color));
    border-radius: 3px;
    box-shadow: 0 4px 15px rgba(0, 86, 179, 0.3);
    opacity: 0.9;
}

.section-header p {
    font-size: clamp(18px, 3vw, 22px);
    color: var(--text-secondary);
    max-width: 750px;
    margin: 0 auto;
    line-height: 1.8;
    opacity: 0.9;
    font-weight: 400;
    letter-spacing: 0.01em;
    background: linear-gradient(135deg, var(--text-secondary), var(--text-primary));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

/* 二级标题 */
h4 {
    font-size: clamp(28px, 5vw, 36px);
    color: var(--text-primary);
    margin-bottom: 20px;
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.2;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

/* 三级标题 */
h5 {
    font-size: clamp(22px, 4vw, 28px);
    color: var(--text-primary);
    margin-bottom: 15px;
    font-weight: 600;
    letter-spacing: -0.01em;
    line-height: 1.3;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

/* 正文段落 */
p {
    font-size: clamp(16px, 2vw, 18px);
    color: var(--text-secondary);
    margin-bottom: 20px;
    line-height: 1.7;
    letter-spacing: 0.005em;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

/* 强调文本 */
.emphasis {
    font-weight: 600;
    color: var(--primary-color);
    letter-spacing: 0.01em;
}

/* 小号文本 */
.small-text {
    font-size: clamp(14px, 1.8vw, 16px);
    color: var(--text-muted);
    line-height: 1.6;
    letter-spacing: 0.008em;
}

/* 大号文本 */
.large-text {
    font-size: clamp(20px, 4vw, 24px);
    color: var(--text-primary);
    line-height: 1.6;
    font-weight: 400;
    letter-spacing: 0.005em;
}

/* 关于我们预览 */
.about-preview {
    padding: 120px 0;
    background-color: #fff;
    background-image: radial-gradient(circle at 2px 2px, rgba(0, 86, 179, 0.02) 1px, transparent 1px),
                      linear-gradient(135deg, rgba(0, 180, 216, 0.01) 0%, rgba(58, 134, 255, 0.005) 100%);
    background-size: 60px 60px, 100% 100%;
}

.about-content {
    display: flex;
    gap: 80px;
    align-items: center;
    max-width: 1100px;
    margin: 0 auto;
}

.about-text {
    flex: 1;
}

.about-text h3 {
    font-size: 28px;
    margin-bottom: 20px;
    color: var(--text-primary);
    font-weight: 700;
}

.about-text p {
    font-size: 16px;
    color: var(--text-secondary);
    margin-bottom: 25px;
    line-height: 1.8;
    opacity: 0.9;
}

.about-image {
    flex: 1;
}

.image-placeholder {
    width: 100%;
    height: 300px;
    background-color: #e9ecef;
    border-radius: 10px;
}

/* 服务预览 */
.services-preview {
    padding: 130px 0;
    background-color: #f8f9fa;
    background-image: linear-gradient(45deg, rgba(0, 86, 179, 0.02) 25%, transparent 25%),
                      linear-gradient(-45deg, rgba(0, 86, 179, 0.02) 25%, transparent 25%),
                      linear-gradient(45deg, transparent 75%, rgba(0, 86, 179, 0.02) 75%),
                      linear-gradient(-45deg, transparent 75%, rgba(0, 86, 179, 0.02) 75%);
    background-size: 20px 20px;
    background-position: 0 0, 0 10px, 10px -10px, -10px 0px;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 45px;
    margin-bottom: 60px;
    max-width: 1100px;
    margin-left: auto;
    margin-right: auto;
}

.service-card {
    background: var(--bg-gradient);
    padding: var(--spacing-12) var(--spacing-8);
    border-radius: var(--border-radius-2xl);
    text-align: center;
    box-shadow: var(--shadow-card);
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    transform-style: preserve-3d;
    border: 1px solid var(--border-color);
    backdrop-filter: blur(15px);
    background-image: var(--pattern-dots), linear-gradient(135deg, rgba(0, 102, 204, 0.02) 0%, rgba(255, 255, 255, 0.05) 100%);
    background-size: 30px 30px, 100% 100%;
    background-blend-mode: overlay, overlay;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 6px;
    background: var(--gradient-accent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
    z-index: 2;
}

.service-card::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: var(--border-radius-2xl);
    padding: 1px;
    background: var(--border-gradient);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    opacity: 0;
    transition: opacity 0.4s ease;
    z-index: 1;
}

.service-card:hover {
    transform: translateY(-15px) rotateX(4deg) rotateY(3deg) scale(1.02);
    box-shadow: var(--shadow-card-hover);
    background: linear-gradient(135deg, #ffffff, #e8f0fe);
}

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

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

.service-card .service-icon {
    font-size: clamp(48px, 6vw, 64px);
    margin-bottom: var(--spacing-8);
    color: var(--primary-color);
    transition: all 0.4s ease;
    position: relative;
    z-index: 1;
    filter: drop-shadow(0 6px 20px rgba(0, 105, 217, 0.3));
}

.service-card:hover .service-icon {
    transform: translateY(-8px) scale(1.15) rotateY(18deg);
    color: var(--primary-dark);
    filter: drop-shadow(0 10px 30px rgba(0, 74, 143, 0.5));
}

.service-card h4 {
    font-size: var(--font-size-2xl);
    margin-bottom: 28px;
    color: var(--text-primary);
    font-weight: 800;
    transition: all 0.4s ease;
    position: relative;
    z-index: 1;
    letter-spacing: -0.02em;
    line-height: 1.3;
}

.service-card:hover h4 {
    color: var(--primary-dark);
    transform: translateY(-4px);
}

.service-card p {
    color: var(--text-secondary);
    font-size: var(--font-size-base);
    line-height: var(--line-height-relaxed);
    transition: all 0.4s ease;
    position: relative;
    z-index: 1;
    opacity: 0.95;
}

.services-more {
    text-align: center;
}

/* BIM案例预览 */
.cases-preview {
    padding: 130px 0;
    background-color: #fff;
    background-image: linear-gradient(180deg, rgba(0, 86, 179, 0.01) 50%, transparent 50%);
    background-size: 100% 40px;
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 45px;
    margin-bottom: 60px;
    max-width: 1100px;
    margin-left: auto;
    margin-right: auto;
}

.case-card {
    background: var(--bg-gradient);
    padding: var(--spacing-12) var(--spacing-8);
    border-radius: var(--border-radius-2xl);
    text-align: center;
    box-shadow: var(--shadow-card);
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    transform-style: preserve-3d;
    border: 1px solid var(--border-color);
    backdrop-filter: blur(15px);
    background-image: var(--pattern-dots), linear-gradient(135deg, rgba(0, 102, 204, 0.02) 0%, rgba(255, 255, 255, 0.05) 100%);
    background-size: 30px 30px, 100% 100%;
    background-blend-mode: overlay, overlay;
}

.case-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 6px;
    background: var(--gradient-accent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
    z-index: 2;
}

.case-card::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: var(--border-radius-2xl);
    padding: 1px;
    background: var(--border-gradient);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    opacity: 0;
    transition: opacity 0.4s ease;
    z-index: 1;
}

.case-card:hover {
    transform: translateY(-15px) rotateX(4deg) rotateY(3deg) scale(1.02);
    box-shadow: var(--shadow-card-hover);
    background: linear-gradient(135deg, #ffffff, #e8f0fe);
}

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

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

.case-card-icon {
    font-size: 56px;
    margin-bottom: 30px;
    color: var(--primary-color);
    transition: all 0.4s ease;
    position: relative;
    z-index: 1;
    filter: drop-shadow(0 6px 20px rgba(0, 105, 217, 0.3));
}

.case-card:hover .case-card-icon {
    transform: translateY(-8px) scale(1.15) rotateY(18deg);
    color: var(--primary-dark);
    filter: drop-shadow(0 10px 30px rgba(0, 74, 143, 0.5));
}

.case-card h4 {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-7);
    color: var(--text-primary);
    font-weight: 800;
    transition: all 0.4s ease;
    position: relative;
    z-index: 1;
    letter-spacing: -0.02em;
    line-height: 1.3;
}

.case-card:hover h4 {
    color: var(--primary-dark);
    transform: translateY(-4px);
}

.case-card p {
    color: var(--text-secondary);
    font-size: var(--font-size-base);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--spacing-6);
    transition: all 0.4s ease;
    position: relative;
    z-index: 1;
    opacity: 0.95;
}

.cases-more {
    text-align: center;
}

/* 联系我们预览 */
.contact-preview {
    background-color: #0056b3;
    color: #fff;
    padding: 130px 0;
    text-align: center;
    background-image: radial-gradient(circle at 15px 15px, rgba(255, 255, 255, 0.03) 1px, transparent 1px),
                      linear-gradient(135deg, rgba(0, 180, 216, 0.1) 0%, rgba(58, 134, 255, 0.05) 100%);
    background-size: 50px 50px, 100% 100%;
}

.contact-preview h3 {
    font-size: 36px;
    margin-bottom: 20px;
    font-weight: 700;
}

.contact-preview p {
    font-size: 18px;
    margin-bottom: 40px;
    opacity: 0.9;
}

/* 页面头部 */
.page-header {
    background-color: #0056b3;
    color: #fff;
    padding: 100px 0 80px;
    text-align: center;
    background-image: radial-gradient(circle at 15px 15px, rgba(255, 255, 255, 0.04) 1px, transparent 1px),
                      linear-gradient(135deg, rgba(0, 180, 216, 0.15) 0%, rgba(58, 134, 255, 0.08) 100%);
    background-size: 50px 50px, 100% 100%;
    position: relative;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 40px 40px;
    animation: float 25s linear infinite;
    z-index: 0;
    opacity: 0.6;
}

.page-header h2 {
    font-size: 42px;
    margin-bottom: 10px;
    font-weight: 700;
}

.page-header p {
    font-size: 18px;
    opacity: 0.9;
}

/* 公司简介 */
.company-intro {
    padding: 120px 0;
    background-color: #fff;
    background-image: radial-gradient(ellipse at 50% 50%, rgba(0, 123, 255, 0.02) 0%, transparent 70%),
                      linear-gradient(45deg, transparent 48%, rgba(0, 86, 179, 0.01) 49%, rgba(0, 86, 179, 0.01) 51%, transparent 52%);
    background-size: 100% 100%, 30px 30px;
}

.intro-content {
    display: flex;
    gap: 80px;
    align-items: center;
    max-width: 1100px;
    margin: 0 auto;
}

.intro-text {
    flex: 1;
}

.intro-text h3 {
    font-size: 28px;
    margin-bottom: 20px;
    color: #333;
}

.intro-text p {
    font-size: 16px;
    color: #666;
    margin-bottom: 20px;
    line-height: 1.8;
}

.intro-image {
    flex: 1;
}

/* 核心价值观 */
.company-values {
    padding: 130px 0;
    background-color: #f8f9fa;
    background-image: radial-gradient(circle at 15px 15px, rgba(0, 86, 179, 0.015) 2px, transparent 2px),
                      linear-gradient(135deg, rgba(0, 123, 255, 0.01) 0%, rgba(0, 180, 216, 0.005) 100%);
    background-size: 50px 50px, 100% 100%;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 45px;
    max-width: 1100px;
    margin-left: auto;
    margin-right: auto;
}

.value-card {
    background: var(--bg-gradient);
    padding: var(--spacing-12) var(--spacing-8);
    border-radius: var(--border-radius-2xl);
    text-align: center;
    box-shadow: var(--shadow-card);
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    transform-style: preserve-3d;
    border: 1px solid var(--border-color);
    backdrop-filter: blur(15px);
    background-image: var(--pattern-dots), linear-gradient(135deg, rgba(0, 102, 204, 0.02) 0%, rgba(255, 255, 255, 0.05) 100%);
    background-size: 30px 30px, 100% 100%;
    background-blend-mode: overlay, overlay;
}

.value-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 6px;
    background: var(--gradient-accent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
    z-index: 2;
}

.value-card::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: var(--border-radius-2xl);
    padding: 1px;
    background: var(--border-gradient);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    opacity: 0;
    transition: opacity 0.4s ease;
    z-index: 1;
}

.value-card:hover {
    transform: translateY(-15px) rotateX(4deg) rotateY(3deg) scale(1.02);
    box-shadow: var(--shadow-card-hover);
    background: linear-gradient(135deg, #ffffff, #e8f0fe);
}

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

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

.value-card .value-icon {
    font-size: 52px;
    margin-bottom: 25px;
    color: var(--primary-color);
    transition: all 0.4s ease;
    position: relative;
    z-index: 1;
    filter: drop-shadow(0 6px 20px rgba(0, 105, 217, 0.3));
}

.value-card:hover .value-icon {
    transform: translateY(-8px) scale(1.15) rotateY(18deg);
    color: var(--primary-dark);
    filter: drop-shadow(0 10px 30px rgba(0, 74, 143, 0.5));
}

.value-card h4 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-5);
    color: var(--text-primary);
    font-weight: 700;
    transition: all 0.4s ease;
    position: relative;
    z-index: 1;
    letter-spacing: -0.01em;
}

.value-card:hover h4 {
    color: var(--primary-dark);
    transform: translateY(-3px);
}

.value-card p {
    color: var(--text-secondary);
    font-size: var(--font-size-base);
    line-height: var(--line-height-relaxed);
    transition: all 0.4s ease;
    position: relative;
    z-index: 1;
    opacity: 0.95;
}

/* 团队成员 */
.company-team {
    padding: 130px 0;
    background-color: #fff;
    background-image: linear-gradient(45deg, rgba(0, 86, 179, 0.008) 25%, transparent 25%),
                      linear-gradient(-45deg, rgba(0, 86, 179, 0.008) 25%, transparent 25%),
                      linear-gradient(45deg, transparent 75%, rgba(0, 86, 179, 0.008) 75%),
                      linear-gradient(-45deg, transparent 75%, rgba(0, 86, 179, 0.008) 75%);
    background-size: 40px 40px;
    background-position: 0 0, 0 20px, 20px -20px, -20px 0px;
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 50px;
    max-width: 1100px;
    margin: 0 auto;
}

.team-card {
    text-align: center;
    background: var(--bg-gradient);
    padding: var(--spacing-12) var(--spacing-8);
    border-radius: var(--border-radius-2xl);
    box-shadow: var(--shadow-card);
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    transform-style: preserve-3d;
    border: 1px solid var(--border-color);
    backdrop-filter: blur(15px);
    background-image: var(--pattern-dots), linear-gradient(135deg, rgba(0, 102, 204, 0.02) 0%, rgba(255, 255, 255, 0.05) 100%);
    background-size: 30px 30px, 100% 100%;
    background-blend-mode: overlay, overlay;
}

.team-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 6px;
    background: var(--gradient-accent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
    z-index: 2;
}

.team-card::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: var(--border-radius-2xl);
    padding: 1px;
    background: var(--border-gradient);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    opacity: 0;
    transition: opacity 0.4s ease;
    z-index: 1;
}



.team-card:hover {
    transform: translateY(-15px) rotateX(4deg) rotateY(3deg) scale(1.02);
    box-shadow: var(--shadow-card-hover);
    background: linear-gradient(135deg, #ffffff, #e8f0fe);
}

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

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

.team-image {
    width: 150px;
    height: 150px;
    background-color: #e9ecef;
    border-radius: 50%;
    margin: 0 auto 25px;
    transition: all 0.4s ease;
    position: relative;
    z-index: 1;
    filter: drop-shadow(0 6px 20px rgba(0, 105, 217, 0.2));
}

.team-card:hover .team-image {
    transform: translateY(-8px) scale(1.08) rotateY(18deg);
    filter: drop-shadow(0 10px 30px rgba(0, 74, 143, 0.4));
}

.team-card h4 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-3);
    color: var(--text-primary);
    font-weight: 700;
    transition: all 0.4s ease;
    position: relative;
    z-index: 1;
    letter-spacing: -0.01em;
}

.team-card:hover h4 {
    color: var(--primary-dark);
    transform: translateY(-3px);
}

.team-card p {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    transition: all 0.4s ease;
    position: relative;
    z-index: 1;
    opacity: 0.9;
}

/* 服务详情 */
.services-detail {
    padding: 130px 0;
    background-color: #fff;
    background-image: repeating-linear-gradient(0deg, transparent, transparent 40px, rgba(0, 123, 255, 0.01) 40px, rgba(0, 123, 255, 0.01) 41px),
                      repeating-linear-gradient(90deg, transparent, transparent 40px, rgba(0, 123, 255, 0.01) 40px, rgba(0, 123, 255, 0.01) 41px);
    background-size: 100% 100%, 100% 100%;
}

.service-item {
    margin-bottom: 80px;
}

.service-content {
    text-align: center;
}

.service-content .service-icon {
    font-size: 64px;
    margin-bottom: 30px;
}

.service-content h3 {
    font-size: 32px;
    margin-bottom: 20px;
    color: #333;
    font-weight: 700;
}

.service-content p {
    font-size: 16px;
    color: #666;
    margin-bottom: 30px;
    line-height: 1.8;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.service-content ul {
    list-style: none;
    max-width: 600px;
    margin: 0 auto;
}

.service-content ul li {
    font-size: 16px;
    color: #666;
    margin-bottom: 10px;
    padding-left: 25px;
    position: relative;
}

.service-content ul li:before {
    content: "✓";
    color: #007bff;
    font-weight: bold;
    position: absolute;
    left: 0;
}

/* 服务CTA */
.service-cta {
    background-color: #f8f9fa;
    padding: 130px 0;
    text-align: center;
    background-image: radial-gradient(circle at 10px 10px, rgba(0, 86, 179, 0.03) 1px, transparent 1px),
                      linear-gradient(135deg, rgba(0, 180, 216, 0.02) 0%, rgba(58, 134, 255, 0.01) 100%);
    background-size: 30px 30px, 100% 100%;
    position: relative;
    overflow: hidden;
}

.service-cta::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, transparent 30%, rgba(0, 86, 179, 0.01) 30%, rgba(0, 86, 179, 0.01) 70%, transparent 70%);
    background-size: 80px 80px;
    opacity: 0.5;
    z-index: 0;
}

.service-cta h3 {
    font-size: 36px;
    margin-bottom: 20px;
    color: #333;
    font-weight: 700;
}

.service-cta p {
    font-size: 18px;
    margin-bottom: 40px;
    color: #666;
}

/* 联系信息 */
.contact-info {
    padding: 130px 0;
    background-color: #fff;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 45px;
    max-width: 1100px;
    margin: 0 auto;
}

.contact-card {
    text-align: center;
    padding: var(--spacing-12) var(--spacing-8);
    background: linear-gradient(145deg, #ffffff, #f1f5f9);
    border-radius: var(--border-radius-2xl);
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    transform-style: preserve-3d;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-card);
    backdrop-filter: blur(15px);
}

.contact-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 6px;
    background: linear-gradient(90deg, var(--primary-dark), var(--primary-color), var(--secondary-color));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
    z-index: 2;
}

.contact-card::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 22px;
    padding: 1px;
    background: var(--border-gradient);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    opacity: 0;
    transition: opacity 0.4s ease;
    z-index: 1;
}

.contact-card:hover {
    transform: translateY(-15px) rotateX(4deg) rotateY(3deg) scale(1.02);
    box-shadow: var(--shadow-card-hover);
    background: linear-gradient(135deg, #ffffff, #e8f0fe);
}

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

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

.contact-card .contact-icon {
    font-size: 56px;
    margin-bottom: 30px;
    color: var(--primary-color);
    transition: all 0.4s ease;
    position: relative;
    z-index: 1;
    filter: drop-shadow(0 6px 20px rgba(0, 105, 217, 0.3));
}

.contact-card:hover .contact-icon {
    transform: translateY(-8px) scale(1.15) rotateY(18deg);
    color: var(--primary-dark);
    filter: drop-shadow(0 10px 30px rgba(0, 74, 143, 0.5));
}

.contact-card h4 {
    font-size: 26px;
    margin-bottom: 28px;
    color: var(--text-primary);
    font-weight: 800;
    transition: all 0.4s ease;
    position: relative;
    z-index: 1;
    letter-spacing: -0.02em;
    line-height: 1.3;
}

.contact-card:hover h4 {
    color: var(--primary-dark);
    transform: translateY(-4px);
}

.contact-card p {
    color: var(--text-secondary);
    font-size: 16px;
    line-height: 1.8;
    transition: all 0.4s ease;
    position: relative;
    z-index: 1;
    opacity: 0.95;
}

/* 联系表单 */
.contact-form-section {
    padding: 130px 0;
    background-color: #f8f9fa;
}

.form-content {
    max-width: 800px;
    margin: 0 auto;
    background-color: #fff;
    padding: 50px;
    border-radius: 15px;
    box-shadow: 0 5px 25px rgba(0, 0, 0, 0.08), 0 2px 10px rgba(0, 0, 0, 0.05);
    position: relative;
    overflow: hidden;
}

.form-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: linear-gradient(90deg, #0056b3, #007bff, #00b4d8);
    z-index: 2;
}

.form-content h3 {
    font-size: 32px;
    margin-bottom: 30px;
    color: #333;
    font-weight: 700;
    text-align: center;
    position: relative;
    z-index: 1;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 25px;
    position: relative;
    z-index: 1;
}

.form-group {
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
}

.form-group label {
    font-size: 16px;
    margin-bottom: 8px;
    color: #333;
    font-weight: 500;
    transition: all 0.3s ease;
}

.form-group input,
.form-group textarea {
    padding: 16px 20px;
    border: 2px solid #e9ecef;
    border-radius: 10px;
    font-size: 16px;
    font-family: inherit;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    background-color: #fff;
    position: relative;
    z-index: 1;
    box-shadow: inset 0 2px 5px rgba(0, 0, 0, 0.05);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #007bff;
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 123, 255, 0.15), inset 0 2px 5px rgba(0, 0, 0, 0.05);
    background-color: #f8f9ff;
}

.form-group textarea {
    resize: vertical;
    min-height: 150px;
}

/* 表单提交按钮增强 */
.contact-form button[type="submit"] {
    position: relative;
    overflow: hidden;
    z-index: 1;
}

/* 按钮脉冲效果 - 更自然的呼吸感 */
@keyframes buttonPulse {
    0%, 100% {
        box-shadow: 0 12px 35px rgba(0, 86, 179, 0.4), 0 4px 15px rgba(0, 86, 179, 0.2);
        transform: translateY(-3px) scale(1.02);
        animation-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
    }
    50% {
        box-shadow: 0 18px 50px rgba(0, 86, 179, 0.55), 0 8px 25px rgba(0, 86, 179, 0.35), 0 0 30px var(--shadow-glow);
        transform: translateY(-3px) scale(1.05);
        animation-timing-function: cubic-bezier(0.68, -0.55, 0.265, 1.55);
    }
}

@keyframes gradientShift {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

.contact-form button[type="submit"]::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(0, 86, 179, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.5s cubic-bezier(0.34, 1.56, 0.64, 1), 
                height 0.5s cubic-bezier(0.34, 1.56, 0.64, 1),
                opacity 0.3s ease;
    z-index: -1;
    opacity: 0;
}

.contact-form button[type="submit"]:hover::after {
    width: 300px;
    height: 300px;
    opacity: 1;
}

.contact-form button[type="submit"]:active::after {
    width: 400px;
    height: 400px;
    transition: width 0.3s, height 0.3s;
}

/* 提交成功动画 */
@keyframes submitSuccess {
    0% {
        transform: scale(0.8);
        opacity: 0;
    }
    50% {
        transform: scale(1.1);
        opacity: 1;
    }
    100% {
        transform: scale(1);
        opacity: 1;
    }
}

/* 轻微浮动动画 - 更自然的上下浮动 */
@keyframes gentleFloat {
    0%, 100% {
        transform: translateY(0px);
        animation-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
    }
    50% {
        transform: translateY(-8px);
        animation-timing-function: cubic-bezier(0.68, -0.55, 0.265, 1.55);
    }
}

/* 微妙旋转动画 - 用于图标和装饰元素 */
@keyframes subtleRotate {
    0%, 100% {
        transform: rotate(0deg);
        animation-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
    }
    33% {
        transform: rotate(1deg);
        animation-timing-function: cubic-bezier(0.68, -0.55, 0.265, 1.55);
    }
    66% {
        transform: rotate(-1deg);
        animation-timing-function: cubic-bezier(0.68, -0.55, 0.265, 1.55);
    }
}

.contact-form.submitted {
    animation: submitSuccess 0.6s ease forwards;
}

/* 页脚 */
footer {
    background: linear-gradient(135deg, #1e3a5f 0%, #2a4365 100%);
    color: #fff;
    padding: var(--spacing-32) 0 var(--spacing-16);
    position: relative;
    overflow: hidden;
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.15);
}

footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #007bff, #00b4d8, #007bff);
    background-size: 200% 100%;
    animation: gradientShift 5s ease-in-out infinite;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-16);
    margin-bottom: var(--spacing-24);
    max-width: var(--container-max-width);
    margin-left: auto;
    margin-right: auto;
    padding: 0 var(--spacing-8);
}

.footer-section h3 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-8);
    font-weight: var(--font-weight-bold);
    color: #ffffff;
    position: relative;
    padding-bottom: var(--spacing-3);
}

.footer-section h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, #007bff, #00b4d8);
    border-radius: 2px;
}

.footer-section h4 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-6);
    font-weight: var(--font-weight-semibold);
    color: #ffffff;
}

.footer-section p {
    color: #f8fafc;
    margin-bottom: 12px;
    font-size: 16px;
    line-height: 1.7;
    font-weight: var(--font-weight-medium);
}

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

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

.footer-section ul li a {
    color: #cbd5e1;
    text-decoration: none;
    transition: all 0.3s ease;
    display: inline-block;
    position: relative;
    padding: 6px 0;
    font-size: 16px;
    font-weight: var(--font-weight-medium);
}

.footer-section ul li a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, #007bff, #00b4d8);
    transition: width 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.footer-section ul li a:hover {
    color: #00b4d8;
    transform: translateX(5px);
}

.footer-section ul li a:hover::after {
    width: 100%;
}

/* 社交媒体图标样式 */
.social-icons {
    display: flex;
    gap: 12px;
    margin-top: var(--spacing-8);
}

.social-icon {
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0.05) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    font-size: 20px;
    text-decoration: none;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
}

.social-icon:hover {
    transform: translateY(-4px) scale(1.15);
    background: linear-gradient(135deg, #007bff, #00b4d8);
    box-shadow: 0 8px 25px rgba(0, 123, 255, 0.4);
    border-color: transparent;
}

/* 页脚底部样式 */
.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-16);
    border-top: 1px solid rgba(255, 255, 255, 0.15);
    margin-top: var(--spacing-16);
    max-width: var(--container-max-width);
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--spacing-8);
    padding-right: var(--spacing-8);
}

.footer-bottom p {
    color: #cbd5e1;
    font-size: 16px;
    margin: 0;
    font-weight: var(--font-weight-medium);
    line-height: 1.8;
}

.footer-bottom p::before {
    content: '©';
    margin-right: 4px;
    opacity: 0.8;
}



/* BIM案例页面样式 */
.cases-intro {
    padding: 80px 0;
    background-color: #fff;
}

.cases-intro .intro-content {
    flex-direction: column;
    text-align: center;
}

.cases-intro h3 {
    font-size: 32px;
    color: #333;
    margin-bottom: 20px;
    font-weight: 700;
}

.cases-intro p {
    font-size: 18px;
    color: #666;
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.8;
}

.cases-showcase {
    padding: 80px 0;
    background-color: #f8f9fa;
}

.case-item {
    background-color: #fff;
    border-radius: 15px;
    padding: 40px;
    margin-bottom: 50px;
    box-shadow: 0 5px 25px rgba(0, 0, 0, 0.08), 0 2px 10px rgba(0, 0, 0, 0.05);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.case-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: linear-gradient(90deg, #0056b3, #007bff, #00b4d8);
    z-index: 2;
}

.case-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 86, 179, 0.15), 0 10px 20px rgba(0, 123, 255, 0.1);
}

.case-header {
    margin-bottom: 30px;
    position: relative;
    z-index: 1;
}

.case-header h3 {
    font-size: 28px;
    color: #333;
    margin-bottom: 15px;
    font-weight: 700;
}

.case-meta {
    display: flex;
    gap: 30px;
    color: #666;
    font-size: 14px;
}

.case-meta span {
    display: flex;
    align-items: center;
}

.case-meta span::before {
    content: '•';
    color: #007bff;
    margin-right: 8px;
    font-weight: bold;
}

.case-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 40px;
    position: relative;
    z-index: 1;
}

.case-image {
    display: flex;
    align-items: center;
    justify-content: center;
}

.case-image .image-placeholder {
    width: 100%;
    height: 250px;
    background: linear-gradient(135deg, #0056b3, #007bff, #00b4d8);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.4s ease;
    box-shadow: 0 10px 30px rgba(0, 86, 179, 0.2);
}

.case-item:hover .case-image .image-placeholder {
    transform: scale(1.05) rotateY(5deg);
    box-shadow: 0 15px 40px rgba(0, 86, 179, 0.3);
}

.case-icon {
    font-size: 80px;
    color: #fff;
    filter: drop-shadow(0 5px 15px rgba(255, 255, 255, 0.3));
}

.case-details h4 {
    font-size: 20px;
    color: #333;
    margin-bottom: 15px;
    font-weight: 600;
}

.case-details p {
    color: #666;
    margin-bottom: 25px;
    line-height: 1.8;
    font-size: 15px;
}

.case-details ul {
    list-style: none;
    margin-bottom: 25px;
}

.case-details ul li {
    color: #666;
    margin-bottom: 10px;
    padding-left: 25px;
    position: relative;
    font-size: 15px;
}

.case-details ul li:before {
    content: '✓';
    color: #007bff;
    font-weight: bold;
    position: absolute;
    left: 0;
}

.case-cta {
    padding: 100px 0;
    background: linear-gradient(135deg, #0056b3, #007bff, #00b4d8);
    color: #fff;
    text-align: center;
}

.case-cta h3 {
    font-size: 32px;
    margin-bottom: 20px;
    font-weight: 700;
}

.case-cta p {
    font-size: 18px;
    margin-bottom: 40px;
    opacity: 0.95;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .hero-content h2 {
        font-size: 36px;
    }
    
    .hero-content p {
        font-size: 18px;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .about-content,
    .intro-content {
        flex-direction: column;
    }
    
    .section-header h3 {
        font-size: 28px;
    }
    
    .services-grid,
    .values-grid,
    .team-grid,
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .form-content {
        padding: 30px 20px;
    }
    
    nav ul {
        display: none;
    }
    
    .case-content {
        grid-template-columns: 1fr;
    }
    
    .case-meta {
        flex-direction: column;
        gap: 5px;
    }
    
    .case-item {
        padding: 30px 20px;
    }
}

/* 移动端菜单按钮 */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    justify-content: space-around;
    width: 30px;
    height: 24px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 10002;
}

.mobile-menu-btn span {
    width: 100%;
    height: 3px;
    background: var(--primary-color);
    border-radius: 3px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.mobile-menu-btn.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.mobile-menu-btn.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* 移动端导航 */
.mobile-nav {
    display: none;
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 300px;
    height: 100vh;
    background: #ffffff;
    box-shadow: -5px 0 30px rgba(0, 45, 88, 0.15);
    padding: 80px 30px 30px;
    transition: right 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 10001;
    overflow-y: auto;
    pointer-events: none;
}

.mobile-nav.active {
    right: 0;
    pointer-events: auto;
}

.mobile-nav ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.mobile-nav li {
    margin-bottom: 0;
}

.mobile-nav-link {
    display: block;
    padding: 18px 20px;
    color: #1a1a2e;
    font-size: 18px;
    font-weight: 600;
    text-decoration: none;
    border-bottom: 1px solid rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    position: relative;
}

.mobile-nav-link::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 0;
    background: linear-gradient(180deg, var(--primary-color), var(--secondary-color));
    border-radius: 2px;
    transition: height 0.3s ease;
}

.mobile-nav-link:hover {
    background: rgba(0, 102, 204, 0.05);
    padding-left: 30px;
    color: var(--primary-color);
}

.mobile-nav-link:hover::before {
    height: 60%;
}

/* 遮罩层 */
.mobile-nav-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 45, 88, 0.5);
    z-index: 10000;
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

.mobile-nav-overlay.active {
    display: block;
    opacity: 1;
    pointer-events: auto;
}

/* 平板设备 (768px - 1024px) */
@media (min-width: 769px) and (max-width: 1024px) {
    .container {
        max-width: 95%;
        padding: 0 20px;
    }
    
    .hero-content h2 {
        font-size: 48px;
    }
    
    .hero-content p {
        font-size: 20px;
    }
    
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
    }
    
    .values-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 25px;
    }
    
    .team-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
    }
    
    .case-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .about-content {
        flex-direction: column;
    }
    
    .about-image {
        max-width: 100%;
        margin-bottom: 40px;
    }
    
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
    }
}

/* 手机设备 (最大 768px) */
@media (max-width: 768px) {
    .container {
        max-width: 100%;
        padding: 0 15px;
    }
    
    /* 显示移动端菜单按钮 */
    .mobile-menu-btn {
        display: flex;
    }
    
    /* 隐藏桌面导航 */
    .desktop-nav {
        display: none;
    }
    
    /* 显示移动端导航 */
    .mobile-nav {
        display: block;
    }
    
    /* 头部样式 */
    header {
        padding: 15px 0;
    }
    
    .logo {
        gap: 10px;
    }
    
    .company-logo {
        width: 40px;
        height: 40px;
    }
    
    .company-name {
        font-size: 18px;
    }
    
    /* Hero 区域 */
    .hero {
        padding: 80px 0 60px;
    }
    
    .hero-content h2 {
        font-size: 32px;
        line-height: 1.2;
    }
    
    .hero-content p {
        font-size: 16px;
        margin-bottom: 30px;
    }
    
    .hero-buttons {
        gap: 15px;
    }
    
    .btn {
        padding: 14px 28px;
        font-size: 16px;
    }
    
    /* 通用区块样式 */
    section {
        padding: 50px 0;
    }
    
    .section-header {
        margin-bottom: 40px;
    }
    
    .section-header h3 {
        font-size: 26px;
    }
    
    .section-header p {
        font-size: 15px;
    }
    
    /* 关于我们页面 */
    .about-content {
        flex-direction: column;
        gap: 30px;
    }
    
    .about-image {
        max-width: 100%;
        order: -1;
    }
    
    .intro-content {
        flex-direction: column;
        gap: 25px;
    }
    
    .intro-item {
        padding: 25px 20px;
    }
    
    /* 服务页面 */
    .services-grid {
        grid-template-columns: 1fr;
        gap: 25px;
    }
    
    .service-card {
        padding: 30px 25px;
    }
    
    .service-icon {
        width: 60px;
        height: 60px;
        font-size: 28px;
    }
    
    .service-card h4 {
        font-size: 20px;
    }
    
    .service-card p {
        font-size: 14px;
    }
    
    .service-item {
        margin-bottom: 50px;
    }
    
    .service-content .service-icon {
        font-size: 48px;
        margin-bottom: 20px;
    }
    
    .service-content h3 {
        font-size: 24px;
        margin-bottom: 15px;
    }
    
    .service-content p {
        font-size: 15px;
        margin-bottom: 20px;
    }
    
    .service-content ul {
        max-width: 100%;
    }
    
    .service-content ul li {
        font-size: 14px;
        margin-bottom: 8px;
    }
    
    .service-cta {
        padding: 60px 0;
    }
    
    .service-cta h3 {
        font-size: 22px;
        margin-bottom: 15px;
    }
    
    .service-cta p {
        font-size: 15px;
        margin-bottom: 25px;
    }
    
    /* 案例页面 */
    .case-grid {
        grid-template-columns: 1fr;
        gap: 25px;
    }
    
    .case-item {
        padding: 25px 20px;
    }
    
    .case-image {
        height: 200px;
    }
    
    .case-title {
        font-size: 20px;
    }
    
    .case-description {
        font-size: 14px;
    }
    
    .cases-showcase {
        padding: 50px 0;
    }
    
    .case-item {
        padding: 25px 20px;
        margin-bottom: 30px;
    }
    
    .case-header h3 {
        font-size: 22px;
        margin-bottom: 12px;
    }
    
    .case-meta {
        flex-direction: column;
        gap: 8px;
        font-size: 13px;
    }
    
    .case-content {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .case-image {
        height: 200px;
        order: -1;
    }
    
    .case-details h4 {
        font-size: 18px;
        margin-bottom: 10px;
    }
    
    .case-details p {
        font-size: 14px;
        margin-bottom: 15px;
    }
    
    .case-details ul {
        margin-bottom: 15px;
    }
    
    .case-details ul li {
        font-size: 14px;
        margin-bottom: 6px;
    }
    
    .case-cta {
        padding: 60px 0;
    }
    
    .case-cta h3 {
        font-size: 22px;
        margin-bottom: 15px;
    }
    
    .case-cta p {
        font-size: 15px;
        margin-bottom: 25px;
    }
    
    /* 联系我们页面 */
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .contact-info-item {
        padding: 25px 20px;
    }
    
    .contact-icon {
        width: 50px;
        height: 50px;
        font-size: 24px;
    }
    
    .contact-info-item h4 {
        font-size: 18px;
        margin-bottom: 10px;
    }
    
    .contact-info-item p {
        font-size: 14px;
        line-height: 1.6;
    }
    
    .contact-preview {
        padding: 60px 0;
    }
    
    .contact-content h3 {
        font-size: 22px;
        margin-bottom: 15px;
    }
    
    .contact-content p {
        font-size: 15px;
        margin-bottom: 25px;
    }
    
    .page-header {
        padding: 60px 0;
    }
    
    .page-header h2 {
        font-size: 32px;
        margin-bottom: 10px;
    }
    
    .page-header p {
        font-size: 15px;
    }
    
    /* 关于我们页面 */
    .company-intro {
        padding: 50px 0;
    }
    
    .intro-content {
        flex-direction: column;
        gap: 25px;
    }
    
    .intro-text h3 {
        font-size: 22px;
        margin-bottom: 15px;
    }
    
    .intro-text p {
        font-size: 15px;
        margin-bottom: 20px;
    }
    
    .intro-image {
        max-width: 100%;
    }
    
    .company-values {
        padding: 50px 0;
    }
    
    .values-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .value-card {
        padding: 25px 20px;
    }
    
    .value-icon {
        width: 50px;
        height: 50px;
        font-size: 24px;
        margin-bottom: 15px;
    }
    
    .value-card h4 {
        font-size: 18px;
        margin-bottom: 10px;
    }
    
    .value-card p {
        font-size: 14px;
    }
    
    .company-team {
        padding: 50px 0;
    }
    
    .team-grid {
        grid-template-columns: 1fr;
        gap: 25px;
    }
    
    .team-card {
        padding: 25px 20px;
    }
    
    .team-image {
        height: 200px;
        margin-bottom: 15px;
    }
    
    .team-card h4 {
        font-size: 18px;
        margin-bottom: 8px;
    }
    
    .team-card p {
        font-size: 14px;
    }
    
    /* 页脚 */
    footer {
        padding: 40px 0 20px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .footer-section h3,
    .footer-section h4 {
        font-size: 18px;
    }
    
    .footer-section p {
        font-size: 14px;
    }
    
    .footer-section ul li {
        margin-bottom: 10px;
    }
    
    .footer-section ul li a {
        font-size: 14px;
    }
    
    .footer-bottom {
        margin-top: 30px;
        padding-top: 20px;
    }
    
    .footer-bottom p {
        font-size: 13px;
    }
    
    /* 按钮样式 */
    .btn-primary,
    .btn-secondary {
        padding: 12px 24px;
        font-size: 15px;
    }
    
    /* 表单样式 */
    .form-group {
        margin-bottom: 20px;
    }
    
    .form-group label {
        font-size: 14px;
    }
    
    .form-group input,
    .form-group textarea {
        padding: 12px 15px;
        font-size: 15px;
    }
    
    /* 卡片样式 */
    .card {
        padding: 25px 20px;
    }
    
    .card h4 {
        font-size: 18px;
    }
    
    .card p {
        font-size: 14px;
    }
}

/* 小屏手机 (最大 480px) */
@media (max-width: 480px) {
    .container {
        padding: 0 12px;
    }
    
    .hero {
        padding: 60px 0 40px;
    }
    
    .hero-content h2 {
        font-size: 26px;
    }
    
    .hero-content p {
        font-size: 15px;
    }
    
    .hero-buttons {
        width: 100%;
    }
    
    .btn {
        width: 100%;
        padding: 14px 20px;
        text-align: center;
    }
    
    section {
        padding: 40px 0;
    }
    
    .section-header h3 {
        font-size: 22px;
    }
    
    .section-header p {
        font-size: 14px;
    }
    
    .service-card {
        padding: 25px 20px;
    }
    
    .case-item {
        padding: 20px 15px;
    }
    
    .case-image {
        height: 180px;
    }
    
    .contact-info-item {
        padding: 20px 15px;
    }
    
    .mobile-nav {
        width: 85%;
    }
    
    .mobile-nav-link {
        padding: 15px 15px;
        font-size: 16px;
    }
}

/* 大屏设备 (最小 1440px) */
@media (min-width: 1440px) {
    .container {
        max-width: 1400px;
    }
    
    .hero-content h2 {
        font-size: 64px;
    }
    
    .hero-content p {
        font-size: 22px;
    }
    
    .services-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .values-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .team-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .case-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* 超大屏设备 (最小 1920px) */
@media (min-width: 1920px) {
    .container {
        max-width: 1800px;
    }
    
    .hero-content h2 {
        font-size: 72px;
    }
    
    .hero-content p {
        font-size: 24px;
    }
}