/* ============================================
   屏墩墩数智科技集团 官网样式表
   官方配色体系 · 科技蓝主题
   ============================================ */

/* ---------- CSS变量定义 ---------- */
:root {
    /* 主色调 */
    --primary: #1677FF;
    --primary-light: #4A9EFF;
    --primary-dark: #0958D9;
    --primary-alpha: rgba(22, 119, 255, 0.1);
    --primary-alpha2: rgba(22, 119, 255, 0.15);
    
    /* 辅助色 */
    --secondary: #0FC6C2;
    --secondary-light: #2DD4BF;
    --accent-green: #5BD8A6;
    --accent-gold: #F5C842;
    
    /* 背景色 */
    --bg-dark: #0A1628;
    --bg-dark2: #0D1F35;
    --bg-white: #0D2040;
    --bg-gray: #0A1628;
    --bg-gray2: #0A1628;
    
    /* 文字色 */
    --text-title: #E8F0FE;
    --text-body: #A8C0E0;
    --text-light: #7A9CC8;
    --text-white: #FFFFFF;
    
    /* 边框 */
    --border-light: rgba(22, 119, 255, 0.15);
    --border-blue: rgba(22, 119, 255, 0.2);
    
    /* 渐变 */
    --gradient-primary: linear-gradient(135deg, #1677FF 0%, #0958D9 100%);
    --gradient-hero: linear-gradient(180deg, #0A1628 0%, #0D1F35 50%, #112240 100%);
    --gradient-card: linear-gradient(180deg, rgba(22, 119, 255, 0.08) 0%, rgba(22, 119, 255, 0.02) 100%);
    --gradient-glow: radial-gradient(ellipse at 50% 0%, rgba(22, 119, 255, 0.3) 0%, transparent 60%);
    
    /* 阴影 */
    --shadow-sm: 0 2px 8px rgba(22, 119, 255, 0.08);
    --shadow-md: 0 4px 20px rgba(22, 119, 255, 0.12);
    --shadow-lg: 0 8px 40px rgba(22, 119, 255, 0.16);
    --shadow-glow: 0 0 60px rgba(22, 119, 255, 0.2);
    
    /* 圆角 */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
    
    /* 间距 */
    --space-xs: 8px;
    --space-sm: 12px;
    --space-md: 16px;
    --space-lg: 20px;
    --space-xl: 24px;
    --space-2xl: 32px;
    --space-3xl: 48px;
    --space-4xl: 64px;
    --space-5xl: 80px;
    
    /* 过渡 */
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* 字体 */
    --font-main: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
}

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

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

body {
    font-family: var(--font-main);
    background: #0A1628;
    color: var(--text-body);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition-fast);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

ul, ol {
    list-style: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    outline: none;
    background: none;
}

/* ---------- 容器 ---------- */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.container-wide {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-xl);
}

/* ---------- 导航栏 ---------- */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 22, 40, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(22, 119, 255, 0.1);
    transition: var(--transition-base);
}

.navbar.scrolled {
    background: rgba(10, 22, 40, 0.98);
    box-shadow: var(--shadow-md);
}

.navbar-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--space-xl);
    height: 72px;
}

.navbar-logo {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    z-index: 1001;
}

.navbar-logo img {
    height: 44px;
    width: auto;
    border-radius: var(--radius-md);
}

.navbar-logo-text {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-white);
}

.navbar-logo-text span {
    color: var(--primary);
}

.navbar-links {
    display: flex;
    align-items: center;
    gap: var(--space-2xl);
}

.navbar-links a {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.95rem;
    font-weight: 500;
    padding: var(--space-xs) 0;
    position: relative;
    transition: var(--transition-fast);
}

.navbar-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: var(--transition-base);
}

.navbar-links a:hover,
.navbar-links a.active {
    color: var(--text-white);
}

.navbar-links a:hover::after,
.navbar-links a.active::after {
    width: 100%;
}

.navbar-cta {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-lg);
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    transition: var(--transition-base);
    white-space: nowrap;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--text-white);
    box-shadow: 0 4px 20px rgba(22, 119, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 30px rgba(22, 119, 255, 0.4);
}

.btn-outline {
    background: transparent;
    color: var(--primary);
    border: 1px solid var(--primary);
}

.btn-outline:hover {
    background: var(--primary-alpha);
}

.btn-white {
    background: var(--text-white);
    color: var(--primary);
}

.btn-white:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-ghost {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-white);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-ghost:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.3);
}

/* 移动端菜单按钮 */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 6px;
    padding: 10px;
    cursor: pointer;
    z-index: 1001;
}

.mobile-menu-btn span {
    width: 24px;
    height: 2px;
    background: var(--text-white);
    border-radius: 2px;
    transition: var(--transition-base);
}

/* ---------- Hero 区域 ---------- */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-hero);
    overflow: hidden;
    padding: 120px var(--space-lg) 80px;
}

/* 背景动效 */
.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    overflow: hidden;
}

.hero-glow {
    position: absolute;
    top: -20%;
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
    height: 80%;
    background: radial-gradient(ellipse at center, rgba(22, 119, 255, 0.25) 0%, rgba(15, 198, 194, 0.1) 40%, transparent 70%);
    animation: glowPulse 8s ease-in-out infinite;
}

@keyframes glowPulse {
    0%, 100% { opacity: 0.6; transform: translateX(-50%) scale(1); }
    50% { opacity: 1; transform: translateX(-50%) scale(1.1); }
}

.hero-grid {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(rgba(22, 119, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(22, 119, 255, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
    0% { transform: perspective(500px) rotateX(60deg) translateY(0); }
    100% { transform: perspective(500px) rotateX(60deg) translateY(60px); }
}

/* 粒子效果 */
.particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: var(--primary);
    border-radius: 50%;
    opacity: 0.6;
    animation: float 15s infinite;
}

.particle:nth-child(2) { left: 20%; animation-delay: -2s; animation-duration: 18s; }
.particle:nth-child(3) { left: 40%; animation-delay: -4s; animation-duration: 12s; }
.particle:nth-child(4) { left: 60%; animation-delay: -6s; animation-duration: 20s; }
.particle:nth-child(5) { left: 80%; animation-delay: -8s; animation-duration: 14s; }
.particle:nth-child(6) { left: 10%; animation-delay: -3s; animation-duration: 16s; }
.particle:nth-child(7) { left: 70%; animation-delay: -5s; animation-duration: 22s; }
.particle:nth-child(8) { left: 30%; animation-delay: -7s; animation-duration: 19s; }

@keyframes float {
    0%, 100% { transform: translateY(100vh) scale(0); opacity: 0; }
    10% { opacity: 0.8; transform: translateY(90vh) scale(1); }
    90% { opacity: 0.8; transform: translateY(10vh) scale(1); }
    100% { transform: translateY(0) scale(0); opacity: 0; }
}

.hero-content {
    position: relative;
    z-index: 10;
    max-width: 900px;
    text-align: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-xs) var(--space-md);
    background: var(--primary-alpha);
    border: 1px solid var(--border-blue);
    border-radius: var(--radius-full);
    color: var(--primary);
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: var(--space-xl);
    animation: fadeInUp 0.8s ease;
}

.hero-badge::before {
    content: '';
    width: 8px;
    height: 8px;
    background: var(--primary);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.2); }
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 900;
    color: var(--text-white);
    line-height: 1.2;
    margin-bottom: var(--space-xl);
    animation: fadeInUp 0.8s ease 0.2s both;
}

.hero-title .highlight {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.125rem;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.8;
    max-width: 700px;
    margin: 0 auto var(--space-2xl);
    animation: fadeInUp 0.8s ease 0.4s both;
}

.hero-buttons {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-md);
    animation: fadeInUp 0.8s ease 0.6s both;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--space-4xl);
    margin-top: var(--space-4xl);
    animation: fadeInUp 0.8s ease 0.8s both;
}

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

.hero-stat-value {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--text-white);
    line-height: 1;
    margin-bottom: var(--space-xs);
}

.hero-stat-value span {
    color: var(--primary);
}

.hero-stat-label {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.5);
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

/* 向下滚动指示 */
.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.875rem;
    animation: bounce 2s infinite;
}

.scroll-indicator::after {
    content: '';
    width: 24px;
    height: 40px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 12px;
    position: relative;
}

.scroll-indicator::before {
    content: '';
    position: absolute;
    bottom: 8px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 8px;
    background: var(--primary);
    border-radius: 2px;
    animation: scrollDown 2s infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(10px); }
}

@keyframes scrollDown {
    0%, 100% { opacity: 0; transform: translateX(-50%) translateY(0); }
    50% { opacity: 1; transform: translateX(-50%) translateY(8px); }
}

/* ---------- 区块通用样式 ---------- */
.section {
    padding: var(--space-5xl) 0;
}

.section-dark {
    background: var(--bg-dark);
    color: var(--text-white);
}

.section-gray {
    background: #0A1628;
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-4xl);
}

.section-badge {
    display: inline-block;
    padding: var(--space-xs) var(--space-md);
    background: var(--primary-alpha);
    border: 1px solid var(--border-blue);
    border-radius: var(--radius-full);
    color: var(--primary);
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: var(--space-md);
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    color: var(--text-title);
    margin-bottom: var(--space-md);
    line-height: 1.3;
}

.section-dark .section-title {
    color: var(--text-white);
}

.section-title .highlight {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-desc {
    font-size: 1.125rem;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
}

.section-dark .section-desc {
    color: rgba(255, 255, 255, 0.6);
}

/* ---------- 卡片通用样式 ---------- */
.card {
    background: rgba(13, 31, 53, 0.85);
    border-radius: var(--radius-lg);
    padding: var(--space-2xl);
    border: 1px solid var(--border-light);
    transition: var(--transition-base);
}

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

.card-dark {
    background: rgba(22, 119, 255, 0.05);
    border-color: rgba(22, 119, 255, 0.1);
}

.card-dark:hover {
    background: rgba(22, 119, 255, 0.1);
    border-color: var(--primary);
}

/* ---------- 中控系统核心区块 ---------- */
.control-center {
    position: relative;
    background: var(--gradient-hero);
    padding: var(--space-5xl) 0;
    overflow: hidden;
}

.control-center::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--primary), transparent);
}

.control-center-content {
    position: relative;
    z-index: 10;
}

.control-center-header {
    text-align: center;
    margin-bottom: var(--space-4xl);
}

.control-center-visual {
    position: relative;
    max-width: 1000px;
    margin: 0 auto;
}

.control-panel {
    background: rgba(22, 119, 255, 0.05);
    border: 1px solid rgba(22, 119, 255, 0.2);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
    position: relative;
    overflow: hidden;
}

.control-panel::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at center, rgba(22, 119, 255, 0.1) 0%, transparent 50%);
    animation: rotateGlow 20s linear infinite;
}

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

.control-panel-inner {
    position: relative;
    z-index: 1;
}

.control-center-core {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-3xl);
    margin-bottom: var(--space-3xl);
}

.control-core-circle {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    background: var(--gradient-primary);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-glow);
    position: relative;
}

.control-core-circle::before {
    content: '';
    position: absolute;
    inset: -4px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    z-index: -1;
    animation: rotate 10s linear infinite;
}

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

.control-core-icon {
    font-size: 3rem;
    margin-bottom: var(--space-xs);
}

.control-core-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-white);
}

.control-connections {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-md);
}

.control-connection {
    background: rgba(22, 119, 255, 0.1);
    border: 1px solid rgba(22, 119, 255, 0.2);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    text-align: center;
    transition: var(--transition-base);
}

.control-connection:hover {
    background: rgba(22, 119, 255, 0.2);
    border-color: var(--primary);
    transform: translateY(-2px);
}

.control-connection-icon {
    font-size: 2rem;
    margin-bottom: var(--space-sm);
}

.control-connection-title {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-white);
    margin-bottom: var(--space-xs);
}

.control-connection-desc {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.5);
}

/* 功能列表 */
.control-features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
    margin-top: var(--space-3xl);
}

.control-feature {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    padding: var(--space-lg);
    background: rgba(255, 255, 255, 0.03);
    border-radius: var(--radius-md);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.control-feature-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    background: var(--primary-alpha);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.control-feature-content h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-white);
    margin-bottom: var(--space-xs);
}

.control-feature-content p {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.5);
    line-height: 1.5;
}

/* ---------- 12大小程序矩阵 ---------- */
.products-matrix {
    background: #0A1628;
    padding: var(--space-5xl) 0;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-lg);
}

.product-card {
    background: rgba(13, 31, 53, 0.85);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    border: 1px solid var(--border-light);
    transition: var(--transition-base);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.product-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: var(--transition-base);
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-alpha);
}

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

.product-icon {
    width: 64px;
    height: 64px;
    border-radius: var(--radius-lg);
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    margin-bottom: var(--space-md);
    box-shadow: var(--shadow-md);
}

/* unified blue */

/* unified blue */

.product-icon.icon-purple {
    background: linear-gradient(135deg, #8B5CF6 0%, #6366F1 100%);
}

/* unified blue */

/* unified blue */

.product-icon.icon-cyan {
    background: linear-gradient(135deg, #0FC6C2 0%, #06B6D4 100%);
}

.product-icon.icon-indigo {
    background: linear-gradient(135deg, #4F46E5 0%, #7C3AED 100%);
}

.product-icon.icon-teal {
    background: linear-gradient(135deg, #14B8A6 0%, #10B981 100%);
}

.product-card-title {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--text-title);
    margin-bottom: var(--space-sm);
}

.product-card-desc {
    font-size: 0.875rem;
    color: var(--text-light);
    line-height: 1.6;
    margin-bottom: var(--space-md);
}

.product-card-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    color: var(--primary);
    font-size: 0.875rem;
    font-weight: 600;
}

.product-card-link::after {
    content: '→';
    transition: var(--transition-fast);
}

.product-card:hover .product-card-link::after {
    transform: translateX(4px);
}

/* ---------- 数字滚动动画 ---------- */
.stats-section {
    background: var(--bg-dark);
    padding: var(--space-5xl) 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-xl);
}

.stat-card {
    text-align: center;
    padding: var(--space-2xl);
    position: relative;
}

.stat-card::after {
    content: '';
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    height: 60%;
    width: 1px;
    background: linear-gradient(180deg, transparent, rgba(22, 119, 255, 0.3), transparent);
}

.stat-card:last-child::after {
    display: none;
}

.stat-icon {
    font-size: 2.5rem;
    margin-bottom: var(--space-md);
}

.stat-value {
    font-size: 3rem;
    font-weight: 800;
    color: var(--text-white);
    line-height: 1;
    margin-bottom: var(--space-xs);
}

.stat-value span {
    color: var(--primary);
}

.stat-label {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.5);
}

/* ---------- 页脚 ---------- */
.footer {
    background: var(--bg-dark);
    border-top: 1px solid rgba(22, 119, 255, 0.1);
    padding: var(--space-4xl) 0 var(--space-2xl);
}

.footer-main {
    display: grid;
    grid-template-columns: 2fr repeat(3, 1fr);
    gap: var(--space-3xl);
    margin-bottom: var(--space-3xl);
}

.footer-brand {
    max-width: 320px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.footer-logo img {
    height: 40px;
    border-radius: var(--radius-md);
}

.footer-logo-text {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-white);
}

.footer-desc {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.5);
    line-height: 1.8;
    margin-bottom: var(--space-lg);
}

.footer-social {
    display: flex;
    gap: var(--space-md);
}

.footer-social a {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    transition: var(--transition-base);
}

.footer-social a:hover {
    background: var(--primary);
    border-color: var(--primary);
    transform: translateY(-2px);
}

.footer-column h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-white);
    margin-bottom: var(--space-lg);
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.footer-links a {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.5);
    transition: var(--transition-fast);
}

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

.footer-bottom {
    padding-top: var(--space-2xl);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.footer-copyright {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.4);
}

.footer-icp {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.4);
}

/* ---------- 动画效果 ---------- */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

.stagger-1 { transition-delay: 0.1s; }
.stagger-2 { transition-delay: 0.2s; }
.stagger-3 { transition-delay: 0.3s; }
.stagger-4 { transition-delay: 0.4s; }
.stagger-5 { transition-delay: 0.5s; }
.stagger-6 { transition-delay: 0.6s; }
.stagger-7 { transition-delay: 0.7s; }
.stagger-8 { transition-delay: 0.8s; }

/* 呼吸动画 */
@keyframes breathe {
    0%, 100% { box-shadow: 0 0 20px rgba(22, 119, 255, 0.3); }
    50% { box-shadow: 0 0 40px rgba(22, 119, 255, 0.5); }
}

.breathe {
    animation: breathe 3s ease-in-out infinite;
}

/* ---------- 响应式设计 ---------- */
@media (max-width: 1200px) {
    .products-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .control-connections {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 992px) {
    .navbar-links {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: rgba(10, 22, 40, 0.98);
        flex-direction: column;
        padding: var(--space-xl);
        gap: var(--space-lg);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition-base);
    }
    
    .navbar-links.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .hero-stats {
        gap: var(--space-2xl);
    }
    
    .hero-stat-value {
        font-size: 2rem;
    }
    
    .control-center-core {
        flex-direction: column;
        gap: var(--space-2xl);
    }
    
    .control-features {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .stat-card::after {
        display: none;
    }
    
    .footer-main {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-2xl);
    }
    
    .footer-brand {
        grid-column: 1 / -1;
        max-width: 100%;
    }
}

@media (max-width: 768px) {
    .section {
        padding: var(--space-4xl) 0;
    }
    
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .control-connections {
        grid-template-columns: 1fr;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .hero-stats {
        flex-wrap: wrap;
        gap: var(--space-xl);
    }
    
    .hero-stat {
        flex: 1;
        min-width: 120px;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: var(--space-md);
        text-align: center;
    }
}

@media (max-width: 576px) {
    :root {
        --space-lg: 16px;
        --space-xl: 20px;
        --space-2xl: 24px;
    }
    
    .products-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .control-core-circle {
        width: 160px;
        height: 160px;
    }
    
    .control-core-icon {
        font-size: 2.5rem;
    }
    
    .control-core-title {
        font-size: 1rem;
    }
    
    .footer-main {
        grid-template-columns: 1fr;
    }
}

/* ---------- 关于页样式 ---------- */
.about-section {
    padding: 120px 0 80px;
}

.about-hero {
    background: var(--gradient-hero);
    padding: 80px 0;
    text-align: center;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4xl);
    align-items: center;
    margin-top: var(--space-4xl);
}

.about-image {
    position: relative;
}

.about-image-main {
    width: 100%;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
}

.about-image-badge {
    position: absolute;
    bottom: -20px;
    right: -20px;
    background: var(--gradient-primary);
    padding: var(--space-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

.about-image-badge-value {
    font-size: 2rem;
    font-weight: 800;
    color: var(--text-white);
}

.about-image-badge-label {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.8);
}

.about-text h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-title);
    margin-bottom: var(--space-lg);
}

.about-text p {
    font-size: 1rem;
    color: var(--text-body);
    line-height: 1.8;
    margin-bottom: var(--space-md);
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
    margin-top: var(--space-4xl);
}

.value-card {
    background: rgba(13, 31, 53, 0.85);
    border-radius: var(--radius-lg);
    padding: var(--space-2xl);
    text-align: center;
    border: 1px solid var(--border-light);
    transition: var(--transition-base);
}

.value-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.value-icon {
    width: 80px;
    height: 80px;
    border-radius: var(--radius-lg);
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    margin: 0 auto var(--space-lg);
}

.value-title {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--text-title);
    margin-bottom: var(--space-sm);
}

.value-desc {
    font-size: 0.875rem;
    color: var(--text-light);
    line-height: 1.6;
}

/* ---------- 合作页样式 ---------- */
.cooperation-types {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
}

.coop-card {
    background: rgba(13, 31, 53, 0.85);
    border-radius: var(--radius-lg);
    padding: var(--space-2xl);
    border: 1px solid var(--border-light);
    text-align: center;
    transition: var(--transition-base);
}

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

.coop-icon {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: var(--primary-alpha);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    margin: 0 auto var(--space-lg);
}

.coop-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-title);
    margin-bottom: var(--space-sm);
}

.coop-desc {
    font-size: 0.875rem;
    color: var(--text-light);
    line-height: 1.6;
}

/* 联系方式表单 */
.contact-form-section {
    background: var(--bg-gray);
    border-radius: var(--radius-xl);
    padding: var(--space-3xl);
}

.contact-form {
    max-width: 600px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: var(--space-lg);
}

.form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-title);
    margin-bottom: var(--space-sm);
}

.form-input,
.form-textarea,
.form-select {
    width: 100%;
    padding: var(--space-md);
    background: var(--bg-white);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    font-size: 1rem;
    color: var(--text-title);
    transition: var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-alpha);
}

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

/* ---------- 页面切换动画 ---------- */
.page {
    display: none;
    animation: pageIn 0.4s ease;
}

.page.active {
    display: block;
}

@keyframes pageIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ---------- 加载动画 ---------- */
.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-3xl);
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-light);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

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

.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }
.mt-2xl { margin-top: var(--space-2xl); }

.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }
.mb-2xl { margin-bottom: var(--space-2xl); }

.hidden { display: none !important; }
.visible { display: block !important; }


/* 导航栏Logo图片 */
.navbar-logo-img {
    height: 44px;
    width: auto;
    border-radius: 8px;
    object-fit: contain;
}

/* =============================================
   深色主题优化 - 调暗所有亮色元素
   ============================================= */

/* section徽章 - 调暗 */
.section-badge {
    display: inline-block;
    padding: 4px 14px;
    background: rgba(22, 119, 255, 0.06) !important;
    border: 1px solid rgba(22, 119, 255, 0.12) !important;
    border-radius: 999px;
    color: rgba(100, 160, 255, 0.7) !important;
    font-size: 0.8rem;
    font-weight: 500;
    margin-bottom: 12px;
}

/* 控制面板 - 调暗 */
.control-panel {
    background: rgba(10, 22, 40, 0.6) !important;
    border: 1px solid rgba(22, 119, 255, 0.08) !important;
}

/* 控制连接卡片 - 调暗 */
.control-connection {
    background: rgba(10, 22, 40, 0.5) !important;
    border: 1px solid rgba(22, 119, 255, 0.08) !important;
}

.control-connection:hover {
    background: rgba(10, 22, 40, 0.7) !important;
    border-color: rgba(22, 119, 255, 0.15) !important;
}

/* 控制连接图标 - 调暗背景 */
.control-connection-icon {
    width: 44px;
    height: 44px;
    border-radius: 10px;
    background: rgba(22, 119, 255, 0.06) !important;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin: 0 auto 10px;
}

/* 控制特性图标 - 调暗 */
.control-feature-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: rgba(22, 119, 255, 0.05) !important;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    flex-shrink: 0;
}

/* 产品图标 - 调暗，接近底色 */
.product-icon {
    width: 56px;
    height: 56px;
    border-radius: 12px;
    background: rgba(22, 119, 255, 0.08) !important;
    border: 1px solid rgba(22, 119, 255, 0.12) !important;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    margin-bottom: 14px;
}

/* 产品卡片 - 更暗 */
.product-card {
    background: rgba(10, 22, 40, 0.6) !important;
    border: 1px solid rgba(22, 119, 255, 0.08) !important;
}

.product-card:hover {
    background: rgba(13, 31, 53, 0.8) !important;
    border-color: rgba(22, 119, 255, 0.15) !important;
}

/* 产品卡片标题 */
.product-card-title {
    font-size: 1rem;
    font-weight: 600;
    color: rgba(200, 220, 255, 0.9) !important;
    margin-bottom: 8px;
}

.product-card-desc {
    font-size: 0.8rem;
    color: rgba(150, 175, 215, 0.7) !important;
    line-height: 1.6;
    margin-bottom: 12px;
}

/* 产品卡片链接 */
.product-card-link {
    color: rgba(100, 160, 255, 0.5) !important;
    font-size: 0.8rem;
    font-weight: 500;
}

/* 统计数字 */
.stat-value {
    font-size: 2.5rem;
    font-weight: 700;
    color: rgba(200, 220, 255, 0.9) !important;
}

/* 控制特性文字 - 调暗 */
.control-feature-content h4 {
    font-size: 0.95rem;
    font-weight: 600;
    color: rgba(200, 220, 255, 0.8) !important;
    margin-bottom: 4px;
}

.control-feature-content p {
    font-size: 0.8rem;
    color: rgba(150, 175, 215, 0.6) !important;
    line-height: 1.5;
}

/* 核心圆圈 - 调暗光晕 */
.control-core-circle {
    width: 160px;
    height: 160px;
    border-radius: 50%;
    background: rgba(22, 119, 255, 0.15) !important;
    border: 2px solid rgba(22, 119, 255, 0.2) !important;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.control-core-circle::before {
    display: none !important;
}

/* 呼吸效果调暗 */
.breathe {
    animation: breatheDark 4s ease-in-out infinite;
}

@keyframes breatheDark {
    0%, 100% { box-shadow: 0 0 20px rgba(22, 119, 255, 0.1); }
    50% { box-shadow: 0 0 40px rgba(22, 119, 255, 0.15); }
}

/* 合作卡片 */
.coop-card {
    background: rgba(10, 22, 40, 0.6) !important;
    border: 1px solid rgba(22, 119, 255, 0.08) !important;
}

.coop-icon {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: rgba(22, 119, 255, 0.06) !important;
}

/* 关于页值卡片 */
.value-card {
    background: rgba(10, 22, 40, 0.6) !important;
    border: 1px solid rgba(22, 119, 255, 0.08) !important;
}

.value-icon {
    width: 64px;
    height: 64px;
    border-radius: 12px;
    background: rgba(22, 119, 255, 0.08) !important;
    border: 1px solid rgba(22, 119, 255, 0.1) !important;
}

/* CTA按钮 - 调暗一点 */
.btn-primary {
    background: rgba(22, 119, 255, 0.2) !important;
    color: rgba(200, 220, 255, 0.9) !important;
    border: 1px solid rgba(22, 119, 255, 0.25) !important;
    box-shadow: none !important;
}

.btn-primary:hover {
    background: rgba(22, 119, 255, 0.3) !important;
    transform: translateY(-1px);
}