/* ==================== 芯睿智联官网 - 深色科技风格 ==================== */

/* ==================== CSS变量 ==================== */
:root {
    /* 科技蓝紫渐变色系 */
    --primary-color: #60a5fa;
    --primary-dark: #3b82f6;
    --primary-light: #93c5fd;
    --accent-color: #06b6d4;
    --accent-gradient: linear-gradient(135deg, #60a5fa 0%, #06b6d4 50%, #a78bfa 100%);

    /* 深色主题变量 */
    --bg-primary: #0a0a1a;
    --bg-secondary: #1a1a2e;
    --bg-tertiary: #16213e;
    --bg-card: rgba(26, 26, 46, 0.6);
    --bg-card-hover: rgba(26, 26, 46, 0.8);
    --bg-card-solid: rgba(30, 30, 50, 0.9);

    /* 文字颜色 */
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --text-dim: #64748b;

    /* 边框颜色 */
    --border-color: rgba(96, 165, 250, 0.15);
    --border-bright: rgba(96, 165, 250, 0.4);

    /* 科技光效 */
    --glow-primary: rgba(96, 165, 250, 0.4);
    --glow-accent: rgba(6, 182, 212, 0.5);
    --glow-text: 0 0 30px rgba(96, 165, 250, 0.3);

    /* 阴影 */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.15);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.25);
    --shadow-xl: 0 20px 50px rgba(0, 0, 0, 0.3);
    --shadow-glow: 0 0 40px rgba(96, 165, 250, 0.25);

    /* 间距 */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 5rem;

    /* 字体 */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

/* ==================== 深色主题 ==================== */
[data-theme="dark"] {
    /* 深色主题变量（默认） */
    --bg-primary: #0a0a1a;
    --bg-secondary: #1a1a2e;
    --bg-tertiary: #16213e;
    --bg-card: rgba(26, 26, 46, 0.6);
    --bg-card-hover: rgba(26, 26, 46, 0.8);
    --bg-card-solid: rgba(30, 30, 50, 0.9);

    /* 文字颜色 */
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --text-dim: #64748b;

    /* 边框颜色 */
    --border-color: rgba(96, 165, 250, 0.15);
    --border-bright: rgba(96, 165, 250, 0.4);

    /* 阴影 */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.15);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.25);
    --shadow-xl: 0 20px 50px rgba(0, 0, 0, 0.3);
    --shadow-glow: 0 0 40px rgba(96, 165, 250, 0.25);
}

/* ==================== 浅色主题 ==================== */
[data-theme="light"] {
    /* 浅色主题变量 */
    --bg-primary: #f8fafc;
    --bg-secondary: #ffffff;
    --bg-tertiary: #f1f5f9;
    --bg-card: rgba(255, 255, 255, 0.8);
    --bg-card-hover: rgba(255, 255, 255, 0.95);
    --bg-card-solid: rgba(255, 255, 255, 0.95);

    /* 文字颜色 */
    --text-primary: #1e293b;
    --text-secondary: #475569;
    --text-muted: #64748b;
    --text-dim: #94a3b8;

    /* 边框颜色 */
    --border-color: rgba(96, 165, 250, 0.2);
    --border-bright: rgba(96, 165, 250, 0.5);

    /* 阴影 */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 50px rgba(0, 0, 0, 0.12);
    --shadow-glow: 0 0 40px rgba(96, 165, 250, 0.2);
}

/* 浅色主题下的特殊调整 */
[data-theme="light"] .navbar {
    background: rgba(255, 255, 255, 0.9);
}

[data-theme="light"] .navbar.scrolled {
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 8px 40px rgba(0, 0, 0, 0.08);
}

[data-theme="light"] .hero-bg::before {
    background-image:
        linear-gradient(rgba(96, 165, 250, 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(96, 165, 250, 0.05) 1px, transparent 1px);
}

[data-theme="light"] .hero-bg::after {
    background: radial-gradient(circle, rgba(96, 165, 250, 0.08) 0%, transparent 70%);
}

[data-theme="light"] .particle {
    background: rgba(96, 165, 250, 0.3);
}

[data-theme="light"] .tech-ring {
    border-color: rgba(96, 165, 250, 0.1);
}

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

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

body {
    font-family: var(--font-family);
    color: var(--text-primary);
    line-height: 1.6;
    background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 50%, var(--bg-primary) 100%);
    overflow-x: hidden;
    transition: background 0.3s ease;
}

/* 自定义滚动条 */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--primary-color), var(--accent-color));
    border-radius: 4px;
}

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

/* ==================== 导航栏 ==================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(10, 10, 26, 0.85);
    backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.15);
    z-index: 1000;
    transition: all 0.3s ease;
}

.navbar::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent 0%, var(--primary-color) 50%, transparent 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.navbar:hover::after,
.navbar.scrolled::after {
    opacity: 1;
}

.navbar.scrolled {
    background: rgba(10, 10, 26, 0.95);
    box-shadow: 0 8px 40px rgba(0, 0, 0, 0.2);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem var(--spacing-md);
}

.nav-brand {
    display: flex;
    flex-direction: column;
    gap: 4px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.nav-brand:hover {
    transform: translateY(-2px);
}

.nav-brand h1 {
    font-size: 1.5rem;
    font-weight: 800;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.5px;
    filter: var(--glow-text);
}

.nav-brand .tagline {
    font-size: 0.65rem;
    color: var(--text-muted);
    font-weight: 500;
    letter-spacing: 1.5px;
    text-transform: uppercase;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 0.25rem;
}

.nav-menu li { position: relative; }

.nav-menu a {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.9375rem;
    padding: 0.625rem 1rem;
    border-radius: 8px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.nav-menu a::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(96, 165, 250, 0.2) 0%, rgba(6, 182, 212, 0.2) 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
    border-radius: 8px;
}

.nav-menu a:hover {
    color: var(--text-primary);
    background: rgba(96, 165, 250, 0.15);
    transform: translateY(-2px);
}

.nav-menu a:hover::before {
    opacity: 1;
}

.nav-menu a.active {
    color: var(--text-primary);
    background: rgba(96, 165, 250, 0.2);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.75rem;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.nav-toggle:hover {
    background: rgba(96, 165, 250, 0.1);
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--accent-gradient);
    border-radius: 2px;
    transition: all 0.3s ease;
}

/* 导航栏右侧区域 */
.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

/* 主题切换按钮 */
.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    background: rgba(96, 165, 250, 0.1);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.theme-toggle:hover {
    background: rgba(96, 165, 250, 0.2);
    border-color: var(--border-bright);
    transform: rotate(15deg);
}

.theme-toggle:active {
    transform: rotate(15deg) scale(0.95);
}

.theme-toggle .theme-icon {
    position: absolute;
    font-size: 1.25rem;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.theme-toggle .sun-icon {
    opacity: 0;
    transform: rotate(-90deg) scale(0.5);
}

.theme-toggle .moon-icon {
    opacity: 1;
    transform: rotate(0deg) scale(1);
}

.theme-mode-indicator {
    position: absolute;
    bottom: -2px;
    right: -2px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: #10b981;
    border: 2px solid var(--bg-secondary);
    transition: all 0.3s ease;
}

.theme-mode-indicator::after {
    content: 'A';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 8px;
    font-weight: 700;
    color: white;
}

.theme-mode-indicator.manual {
    background: var(--accent-color);
}

.theme-mode-indicator.manual::after {
    content: 'M';
}

[data-theme="light"] .theme-toggle .sun-icon {
    opacity: 1;
    transform: rotate(0deg) scale(1);
}

[data-theme="light"] .theme-toggle .moon-icon {
    opacity: 0;
    transform: rotate(90deg) scale(0.5);
}

/* ==================== Hero区域 ==================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 1;
    overflow: hidden;
}

/* 科技网格 */
.hero-bg::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(96, 165, 250, 0.08) 1px, transparent 1px),
        linear-gradient(90deg, rgba(96, 165, 250, 0.08) 1px, transparent 1px);
    background-size: 60px 60px;
    animation: gridMove 30s linear infinite;
}

@keyframes gridMove {
    0% { background-position: 0 0; }
    100% { background-position: 60px 60px; }
}

/* 光晕效果 */
.hero-bg::after {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 80%;
    height: 150%;
    background: radial-gradient(circle, rgba(96, 165, 250, 0.15) 0%, transparent 70%);
    animation: glow 20s ease-in-out infinite;
}

@keyframes glow {
    0%, 100% { opacity: 0.5; transform: translate(0, 0) scale(1); }
    50% { opacity: 0.8; transform: translate(-30px, -30px) scale(1.1); }
}

/* 科技粒子 */
.tech-particles {
    position: absolute;
    inset: 0;
    z-index: 2;
    pointer-events: none;
}

.particle {
    position: absolute;
    width: 3px;
    height: 3px;
    background: rgba(96, 165, 250, 0.5);
    border-radius: 50%;
    animation: particleFloat 20s infinite;
    box-shadow: 0 0 10px var(--glow-primary);
}

.particle:nth-child(1) { left: 10%; top: 80%; animation-delay: 0s; }
.particle:nth-child(2) { left: 20%; top: 60%; animation-delay: 2s; }
.particle:nth-child(3) { left: 30%; top: 40%; animation-delay: 4s; }
.particle:nth-child(4) { left: 40%; top: 70%; animation-delay: 1s; }
.particle:nth-child(5) { left: 50%; top: 50%; animation-delay: 3s; }
.particle:nth-child(6) { left: 60%; top: 30%; animation-delay: 5s; }
.particle:nth-child(7) { left: 70%; top: 60%; animation-delay: 2.5s; }
.particle:nth-child(8) { left: 80%; top: 80%; animation-delay: 1.5s; }
.particle:nth-child(9) { left: 90%; top: 40%; animation-delay: 4.5s; }
.particle:nth-child(10) { left: 15%; top: 70%; animation-delay: 3.5s; }

@keyframes particleFloat {
    0%, 100% {
        transform: translateY(0) translateX(0);
        opacity: 0;
    }
    10%, 90% { opacity: 1; }
    100% {
        transform: translateY(-100vh) translateX(30px);
        opacity: 0;
    }
}

/* 科技光环 */
.tech-rings {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 2;
    pointer-events: none;
}

.tech-ring {
    position: absolute;
    border: 1px solid rgba(96, 165, 250, 0.15);
    border-radius: 50%;
    animation: ringPulse 10s ease-in-out infinite;
}

.tech-ring:nth-child(1) { width: 400px; height: 400px; animation-delay: 0s; }
.tech-ring:nth-child(2) { width: 600px; height: 600px; animation-delay: 2s; }
.tech-ring:nth-child(3) { width: 800px; height: 800px; animation-delay: 4s; }

@keyframes ringPulse {
    0%, 100% { transform: scale(1); opacity: 0.2; }
    50% { transform: scale(1.02); opacity: 0.4; }
}

/* 机器人元素 */
.robot-element {
    position: absolute;
    z-index: 3;
    font-size: 100px;
    opacity: 0.12;
    filter: blur(1px);
    animation: robotFloat 25s ease-in-out infinite;
}

.robot-element.robot-left {
    left: 8%;
    top: 25%;
    animation-delay: 0s;
}

.robot-element.robot-right {
    right: 8%;
    bottom: 25%;
    animation-delay: 12.5s;
    transform: scaleX(-1);
}

@keyframes robotFloat {
    0%, 100% {
        transform: translateY(0) rotate(-3deg);
        opacity: 0.12;
    }
    50% {
        transform: translateY(-15px) rotate(3deg);
        opacity: 0.2;
    }
}

/* 科技图标 */
.tech-icons {
    position: absolute;
    inset: 0;
    z-index: 3;
    pointer-events: none;
}

.tech-icon {
    position: absolute;
    font-size: 20px;
    opacity: 0.25;
    animation: iconFloat 12s ease-in-out infinite;
    filter: drop-shadow(0 0 10px var(--glow-primary));
}

.tech-icon:nth-child(1) { left: 12%; top: 20%; animation-delay: 0s; }
.tech-icon:nth-child(2) { left: 88%; top: 30%; animation-delay: 2s; }
.tech-icon:nth-child(3) { left: 20%; top: 75%; animation-delay: 4s; }
.tech-icon:nth-child(4) { left: 80%; top: 60%; animation-delay: 1s; }
.tech-icon:nth-child(5) { left: 50%; top: 15%; animation-delay: 3s; }
.tech-icon:nth-child(6) { left: 70%; top: 85%; animation-delay: 5s; }

@keyframes iconFloat {
    0%, 100% {
        transform: translateY(0) rotate(0deg);
        opacity: 0.25;
    }
    50% {
        transform: translateY(-12px) rotate(5deg);
        opacity: 0.4;
    }
}

/* 扫描线 */
.scan-line {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg,
        transparent 0%,
        var(--primary-color) 40%,
        var(--accent-color) 60%,
        var(--primary-color) 100%);
    animation: scan 10s linear infinite;
    z-index: 4;
    pointer-events: none;
}

@keyframes scan {
    0% { top: -10%; opacity: 0; }
    50% { opacity: 0.6; }
    100% { top: 110%; opacity: 0; }
}

/* Hero内容 */
.hero-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    z-index: 10;
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 900;
    margin-bottom: var(--spacing-md);
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeInUp 1s ease, titlePulse 4s ease-in-out infinite alternate;
}

@keyframes titlePulse {
    0% { filter: brightness(1) drop-shadow(0 0 30px rgba(96, 165, 250, 0.3)); }
    100% { filter: brightness(1.1) drop-shadow(0 0 50px rgba(96, 165, 250, 0.5)); }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-subtitle {
    font-size: clamp(1.25rem, 2.5vw, 1.75rem);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
    animation: fadeInUp 1s ease 0.15s both;
    text-shadow: var(--glow-text);
}

.hero-desc {
    font-size: 1.125rem;
    color: var(--text-muted);
    margin-bottom: var(--spacing-xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    animation: fadeInUp 1s ease 0.3s both;
}

.hero-features {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    animation: fadeInUp 1s ease 0.45s both;
}

.feature-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-md);
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2);
}

.feature-item:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-bright);
    box-shadow: var(--shadow-glow);
    transform: translateY(-4px);
}

.feature-icon {
    font-size: 2rem;
    filter: drop-shadow(0 0 15px var(--glow-primary));
}

.feature-item span {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.hero-actions {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    animation: fadeInUp 1s ease 0.6s both;
}

/* 按钮 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.875rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: 50px;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--accent-gradient);
    color: white;
    box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 40px rgba(96, 165, 250, 0.5);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-secondary);
    border: 2px solid var(--border-bright);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(96, 165, 250, 0.2);
    border-color: var(--primary-color);
    color: var(--text-primary);
}

.btn-block { width: 100%; }

/* 滚动指示器 */
.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-lg);
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    color: var(--text-muted);
    font-size: 0.875rem;
    z-index: 10;
    animation: fadeIn 1.5s ease;
}

.scroll-arrow {
    width: 24px;
    height: 40px;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    margin: var(--spacing-xs) auto 0;
    position: relative;
    background: rgba(96, 165, 250, 0.1);
}

.scroll-arrow::before {
    content: '';
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 8px;
    background: var(--accent-gradient);
    border-radius: 2px;
    animation: scrollBounce 2s ease-in-out infinite;
    box-shadow: 0 0 10px var(--glow-primary);
}

@keyframes scrollBounce {
    0%, 100% { transform: translateX(-50%) translateY(8px); }
    50% { transform: translateX(-50%) translateY(16px); }
}

/* ==================== 通用区块 ==================== */
.section {
    padding: var(--spacing-2xl) 0;
    position: relative;
}

.section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 1px;
    height: 100px;
    background: var(--accent-gradient);
    opacity: 0.1;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    position: relative;
    z-index: 1;
}

.section-title {
    font-size: clamp(2rem, 4vw, 2.5rem);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: inline-block;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    font-weight: 400;
}

/* ==================== 卡片基础样式 ==================== */
.card-base {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    box-shadow: var(--shadow-md);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2);
    position: relative;
    overflow: hidden;
}

.card-base::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--accent-gradient);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.card-base:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-bright);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
    transform: translateY(-4px);
}

.card-base:hover::before {
    opacity: 1;
}

/* ==================== 关于我们 ==================== */
.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.about-card {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    padding: var(--spacing-lg);
    border-radius: 20px;
    text-align: center;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2);
}

.about-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-bright);
    box-shadow: var(--shadow-glow);
    transform: translateY(-6px);
}

.card-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
    filter: drop-shadow(0 0 20px var(--glow-primary));
}

.about-card h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.about-card p {
    color: var(--text-secondary);
    line-height: 1.8;
}

.service-scopes {
    text-align: center;
    margin-top: var(--spacing-xl);
}

.service-scopes h3 {
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.scope-tags {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-sm);
}

.tag {
    padding: 0.625rem 1.5rem;
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    color: var(--text-secondary);
    font-weight: 500;
    transition: all 0.3s ease;
}

.tag:hover {
    background: rgba(96, 165, 250, 0.2);
    border-color: var(--primary-color);
    color: var(--text-primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(96, 165, 250, 0.3);
}

/* ==================== 核心能力 ==================== */
.capabilities-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-lg);
}

.capability-card {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    padding: var(--spacing-lg);
    border-radius: 20px;
    box-shadow: var(--shadow-md);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2);
}

.capability-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--accent-gradient);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.capability-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-bright);
    box-shadow: var(--shadow-glow);
    transform: translateY(-4px);
}

.capability-card:hover::before {
    opacity: 1;
}

.capability-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
    filter: drop-shadow(0 0 15px var(--glow-primary));
}

.capability-card h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.capability-card > p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

.capability-list {
    list-style: none;
}

.capability-list li {
    padding: var(--spacing-xs) 0;
    padding-left: 1.75rem;
    position: relative;
    color: var(--text-secondary);
}

.capability-list li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: 600;
}

/* ==================== 应用场景 ==================== */
.scenarios-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.scenario-card {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    padding: var(--spacing-lg);
    border-radius: 20px;
    box-shadow: var(--shadow-md);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2);
    position: relative;
    overflow: hidden;
}

.scenario-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--accent-gradient);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.scenario-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-bright);
    box-shadow: var(--shadow-glow);
    transform: translateY(-4px);
}

.scenario-card:hover::before {
    opacity: 1;
}

.scenario-card.education { border-color: rgba(59, 130, 246, 0.4); }
.scenario-card.emotion { border-color: rgba(236, 72, 153, 0.4); }
.scenario-card.professional { border-color: rgba(139, 92, 246, 0.4); }
.scenario-card.enterprise { border-color: rgba(16, 185, 129, 0.4); }

.scenario-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.scenario-icon {
    font-size: 2rem;
    filter: drop-shadow(0 0 10px var(--glow-primary));
}

.scenario-header h3 {
    font-size: 1.125rem;
    color: var(--text-primary);
}

.scenario-desc {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
}

.scenario-features {
    list-style: none;
}

.scenario-features li {
    padding: var(--spacing-xs) 0;
    color: var(--text-secondary);
    font-size: 0.9375rem;
}

.real-applications {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    padding: var(--spacing-xl);
    border-radius: 20px;
    box-shadow: var(--shadow-md);
}

.real-applications h3 {
    text-align: center;
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
}

.applications-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.app-item {
    text-align: center;
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.03);
    border-radius: 12px;
    transition: all 0.3s ease;
}

.app-item:hover {
    background: rgba(96, 165, 250, 0.1);
    transform: translateY(-2px);
}

.app-icon {
    font-size: 2.5rem;
    display: block;
    margin-bottom: var(--spacing-sm);
    filter: drop-shadow(0 0 10px var(--glow-primary));
}

.app-item h4 {
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.app-item p {
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* ==================== 技术架构 ==================== */
.architecture-diagram {
    margin-bottom: var(--spacing-xl);
}

.arch-layer {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    padding: var(--spacing-lg);
    border-radius: 20px;
    box-shadow: var(--shadow-md);
    margin-bottom: var(--spacing-md);
}

.arch-layer h3 {
    text-align: center;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.arch-layer.hardware h3 { color: var(--primary-color); }
.arch-layer.platform h3 { color: var(--accent-color); }
.arch-layer.ai h3 { color: #a78bfa; }

.arch-items {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-md);
}

.arch-item {
    flex: 1;
    min-width: 140px;
    text-align: center;
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    transition: all 0.3s ease;
}

.arch-item:hover {
    background: rgba(96, 165, 250, 0.1);
    border-color: var(--border-bright);
    transform: translateY(-2px);
}

.arch-icon {
    font-size: 2rem;
    display: block;
    margin-bottom: var(--spacing-sm);
    filter: drop-shadow(0 0 10px var(--glow-primary));
}

.arch-item p {
    font-weight: 500;
    color: var(--text-primary);
}

.arch-item small {
    display: block;
    color: var(--text-muted);
    font-size: 0.75rem;
    margin-top: 4px;
}

.arch-arrow {
    text-align: center;
    font-size: 2rem;
    color: var(--text-muted);
    margin: var(--spacing-md) 0;
}

.tech-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.tech-feature {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    padding: var(--spacing-lg);
    border-radius: 16px;
    text-align: center;
}

.tech-feature h4 {
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.tech-feature ul {
    list-style: none;
    text-align: left;
}

.tech-feature li {
    padding: var(--spacing-xs) 0;
    color: var(--text-secondary);
}

/* ==================== 产品系列 ==================== */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.product-card {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2);
}

.product-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--accent-gradient);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.product-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-glow);
}

.product-card:hover::before {
    opacity: 1;
}

.product-image {
    height: 200px;
    background: var(--bg-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.product-image::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at center, rgba(96, 165, 250, 0.1) 0%, transparent 70%);
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.product-card:hover .product-image img {
    transform: scale(1.05);
}

.product-placeholder {
    font-size: 4rem;
}

.product-info {
    padding: var(--spacing-lg);
}

.product-info h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.product-desc {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

.product-features {
    list-style: none;
}

.product-features li {
    padding: var(--spacing-xs) 0;
    padding-left: 1.5rem;
    position: relative;
    color: var(--text-secondary);
}

.product-features li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--primary-color);
}

/* ==================== AI盒子 ==================== */
.box-comparison {
    overflow-x: auto;
    margin-bottom: var(--spacing-xl);
}

.comparison-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.comparison-table th,
.comparison-table td {
    padding: var(--spacing-md);
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.comparison-table th {
    background: var(--accent-gradient);
    color: var(--text-primary);
    font-weight: 600;
}

.comparison-table td:first-child {
    font-weight: 600;
    color: var(--text-primary);
}

.comparison-table tr:last-child td {
    border-bottom: none;
}

.comparison-table tr:hover {
    background: rgba(96, 165, 250, 0.05);
}

.box-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.box-feature-item {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    padding: var(--spacing-lg);
    border-radius: 16px;
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
}

.box-feature-item:hover {
    border-color: var(--border-bright);
    transform: translateY(-2px);
}

.box-feature-item h4 {
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.box-feature-item p {
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* 硬件架构 */
.hardware-architecture {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    padding: var(--spacing-xl);
    border-radius: 24px;
    margin-bottom: var(--spacing-xl);
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
}

.hardware-architecture::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 30% 20%, rgba(96, 165, 250, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.hardware-architecture .section-header {
    margin-bottom: var(--spacing-lg);
}

.hardware-architecture .section-header h3 {
    color: var(--text-primary);
}

.hardware-architecture .section-header p {
    color: var(--text-muted);
}

.architecture-diagram-container {
    background: var(--bg-card);
    padding: var(--spacing-lg);
    border-radius: 16px;
    margin-bottom: var(--spacing-xl);
    box-shadow: var(--shadow-md);
}

.architecture-image {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 0 auto;
}

.architecture-highlights {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: var(--spacing-md);
}

.highlight-item {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    padding: var(--spacing-md);
    border-radius: 16px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
}

.highlight-item:hover {
    border-color: var(--border-bright);
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.highlight-icon {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
    display: block;
}

.highlight-item h4 {
    font-size: 1rem;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.highlight-item p {
    font-size: 0.875rem;
    color: var(--text-muted);
    line-height: 1.6;
}

/* ==================== 合作模式 ==================== */
.cooperation-modes {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.cooperation-card {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    padding: var(--spacing-lg);
    border-radius: 20px;
    box-shadow: var(--shadow-md);
    position: relative;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2);
}

.cooperation-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--accent-gradient);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.cooperation-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-bright);
    box-shadow: var(--shadow-glow);
    transform: translateY(-4px);
}

.cooperation-card:hover::before {
    opacity: 1;
}

.mode-number {
    position: absolute;
    top: -15px;
    right: var(--spacing-md);
    width: 50px;
    height: 50px;
    background: var(--accent-gradient);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.25rem;
    box-shadow: var(--shadow-glow);
}

.cooperation-card h3 {
    margin-bottom: var(--spacing-sm);
    padding-right: 50px;
    color: var(--text-primary);
}

.cooperation-card > p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

.mode-features {
    list-style: none;
}

.mode-features li {
    padding: var(--spacing-xs) 0;
    color: var(--text-secondary);
    font-size: 0.9375rem;
}

.pricing-info {
    display: flex;
    justify-content: center;
}

.pricing-card {
    background: var(--accent-gradient);
    color: white;
    padding: var(--spacing-xl);
    border-radius: 20px;
    text-align: center;
    max-width: 500px;
    box-shadow: var(--shadow-glow);
}

.pricing-card h3 {
    margin-bottom: var(--spacing-md);
}

.pricing-card p {
    margin-bottom: var(--spacing-lg);
    opacity: 0.9;
}

/* ==================== 联系我们 ==================== */
.contact-content {
    display: grid;
    grid-template-columns: 1.5fr 2fr;
    gap: var(--spacing-xl);
}

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

.contact-item {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
}

.contact-icon {
    font-size: 2.5rem;
    filter: drop-shadow(0 0 15px var(--glow-primary));
}

.contact-item h4 {
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.contact-item p {
    color: var(--text-muted);
}

.contact-form {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    padding: var(--spacing-xl);
    border-radius: 20px;
    box-shadow: var(--shadow-md);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
    color: var(--text-primary);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.875rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    font-size: 1rem;
    font-family: inherit;
    color: var(--text-primary);
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    background: rgba(255, 255, 255, 0.08);
    box-shadow: 0 0 0 4px rgba(96, 165, 250, 0.3);
}

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

/* ==================== 页脚 ==================== */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: var(--spacing-xl) 0 var(--spacing-md);
}

.footer-content {
    display: grid;
    grid-template-columns: 1.5fr 2fr;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
}

.footer-brand h3 {
    margin-bottom: var(--spacing-xs);
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-brand p {
    opacity: 0.8;
}

.footer-slogan {
    margin-top: var(--spacing-sm);
    opacity: 0.6;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.footer-column h4 {
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
    font-size: 1rem;
}

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

.footer-column li {
    margin-bottom: var(--spacing-xs);
}

.footer-column a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.3s ease;
}

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

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
}

.footer-bottom p {
    opacity: 0.6;
    font-size: 0.875rem;
}

/* ==================== 回到顶部 ==================== */
.back-to-top {
    position: fixed;
    bottom: var(--spacing-lg);
    right: var(--spacing-lg);
    width: 50px;
    height: 50px;
    background: var(--accent-gradient);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2);
    box-shadow: var(--shadow-glow);
    z-index: 999;
}

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

.back-to-top:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 50px rgba(96, 165, 250, 0.6);
}

.back-to-top span {
    font-size: 1.5rem;
}

/* ==================== 动画类 ==================== */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2);
}

.animate-on-scroll.animated {
    opacity: 1;
    transform: translateY(0);
}

/* ==================== 响应式设计 ==================== */
@media (max-width: 992px) {
    .contact-content {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
    }

    .footer-links {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg-secondary);
        backdrop-filter: blur(30px) saturate(180%);
        flex-direction: column;
        padding: var(--spacing-md);
        gap: 0;
        box-shadow: var(--shadow-lg), var(--shadow-glow);
        border-top: 1px solid var(--border-bright);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all 0.4s cubic-bezier(0.4, 0, 0.2);
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav-menu li {
        border-bottom: 1px solid var(--border-color);
    }

    .nav-menu a {
        display: block;
        padding: 1rem var(--spacing-md);
        border-radius: 0;
        color: var(--text-secondary);
        font-size: 1rem;
    }

    .nav-menu a:hover {
        color: var(--text-primary);
        background: rgba(96, 165, 250, 0.15);
        transform: translateX(10px);
    }

    .nav-toggle {
        display: flex;
    }

    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
        background: var(--primary-color);
    }

    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
        background: var(--accent-color);
    }

    .hero-actions {
        flex-direction: column;
    }

    .about-grid,
    .capabilities-grid,
    .scenarios-grid,
    .products-grid {
        grid-template-columns: 1fr;
    }

    .architecture-highlights {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-links {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1.125rem;
    }

    .architecture-highlights {
        grid-template-columns: 1fr;
    }

    .hardware-architecture {
        padding: var(--spacing-md);
    }

    .section {
        padding: var(--spacing-xl) 0;
    }
}