/**
 * =============================================================================
 * 全能开发工程师 - 核心样式文件 V2.0
 * =============================================================================
 * 
 * 【升级版】更丰富的色彩层次、更强的视觉冲击力
 * 
 * =============================================================================
 */

/* ============================================================================
   CSS变量定义 - 丰富色彩系统
   ============================================================================ */
:root {
    /* 主色系 - 蓝色渐变 */
    --primary: #0A2463;
    --primary-light: #1A3A7C;
    --primary-dark: #051538;
    --primary-rgb: 10, 36, 99;
    
    /* 辅助色系 - 天青蓝渐变 */
    --secondary: #3E92CC;
    --secondary-light: #5BA4D4;
    --secondary-dark: #2A7AB8;
    --secondary-rgb: 62, 146, 204;
    
    /* 强调色 - 增加活力 */
    --accent-cyan: #00D4FF;
    --accent-purple: #7C3AED;
    --accent-pink: #EC4899;
    --accent-orange: #F59E0B;
    --accent-green: #10B981;
    --accent-red: #EF4444;
    
    /* 背景色系 - 浅蓝色调 */
    --background: #E8F4FC;
    --background-alt: #DCF0FA;
    --surface: #F0F8FF;
    --surface-elevated: #FFFFFF;
    
    /* 边框和分割 */
    --border: #E2E8F0;
    --border-light: #F1F5F9;
    
    /* 文字色系 */
    --text: #1E293B;
    --text-secondary: #475569;
    --text-muted: #94A3B8;
    --text-inverse: #FFFFFF;
    
    /* 丰富渐变 */
    --gradient-primary: linear-gradient(135deg, #0A2463 0%, #1A3A7C 50%, #3E92CC 100%);
    --gradient-hero: linear-gradient(135deg, #0A2463 0%, #1A3A7C 30%, #2A7AB8 60%, #3E92CC 100%);
    --gradient-card: linear-gradient(145deg, rgba(255,255,255,0.95) 0%, rgba(248,250,252,0.9) 100%);
    --gradient-accent: linear-gradient(135deg, #3E92CC 0%, #00D4FF 50%, #7C3AED 100%);
    --gradient-warm: linear-gradient(135deg, #F59E0B 0%, #EC4899 100%);
    --gradient-cool: linear-gradient(135deg, #3E92CC 0%, #10B981 100%);
    --gradient-vibrant: linear-gradient(135deg, #7C3AED 0%, #EC4899 50%, #F59E0B 100%);
    --gradient-mesh: radial-gradient(at 40% 20%, #3E92CC33 0px, transparent 50%),
                     radial-gradient(at 80% 0%, #7C3AED22 0px, transparent 50%),
                     radial-gradient(at 0% 50%, #00D4FF22 0px, transparent 50%),
                     radial-gradient(at 80% 50%, #EC489922 0px, transparent 50%),
                     radial-gradient(at 0% 100%, #10B98122 0px, transparent 50%);
    
    /* 玻璃拟态 - 更加通透 */
    --glass-bg: rgba(255, 255, 255, 0.65);
    --glass-bg-strong: rgba(255, 255, 255, 0.8);
    --glass-border: rgba(255, 255, 255, 0.4);
    --glass-blur: blur(25px);
    
    /* 阴影系统 */
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07), 0 2px 4px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1), 0 4px 6px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.1), 0 8px 10px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px rgba(0, 0, 0, 0.15);
    --shadow-glow: 0 0 40px rgba(62, 146, 204, 0.3);
    --shadow-glow-accent: 0 0 40px rgba(124, 58, 237, 0.3);
    --shadow-inner: inset 0 2px 4px rgba(0, 0, 0, 0.05);
    
    /* 卡片特殊阴影 */
    --card-shadow: 0 4px 6px rgba(10, 36, 99, 0.04), 
                   0 10px 20px rgba(10, 36, 99, 0.06),
                   0 1px 3px rgba(0, 0, 0, 0.08);
    --card-shadow-hover: 0 8px 16px rgba(62, 146, 204, 0.12),
                         0 20px 40px rgba(10, 36, 99, 0.1),
                         0 1px 3px rgba(0, 0, 0, 0.08);
    
    /* 动画 */
    --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    
    /* 圆角 */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-2xl: 32px;
    --radius-full: 9999px;
    
    /* 间距 */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
    --spacing-4xl: 8rem;
}

/* 暗色模式 */
[data-theme="dark"] {
    --primary: #5BA4D4;
    --primary-light: #7CB8E0;
    --secondary: #00D4FF;
    --background: #0B1120;
    --background-alt: #111827;
    --surface: #1E293B;
    --surface-elevated: #334155;
    --border: #334155;
    --border-light: #1E293B;
    --text: #F1F5F9;
    --text-secondary: #CBD5E1;
    --text-muted: #64748B;
    
    --glass-bg: rgba(30, 41, 59, 0.8);
    --glass-bg-strong: rgba(30, 41, 59, 0.9);
    --glass-border: rgba(255, 255, 255, 0.1);
    
    --gradient-card: linear-gradient(145deg, rgba(30, 41, 59, 0.95) 0%, rgba(15, 23, 42, 0.9) 100%);
    --gradient-mesh: radial-gradient(at 40% 20%, #3E92CC22 0px, transparent 50%),
                     radial-gradient(at 80% 0%, #7C3AED15 0px, transparent 50%),
                     radial-gradient(at 0% 50%, #00D4FF15 0px, transparent 50%);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
    scroll-padding-top: 80px;
}

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

/* ============================================================================
   全局动态背景效果 - 简约高级版
   ============================================================================ */
.global-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

/* 主光晕层 - 超慢速流动 */
.global-bg::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: 
        radial-gradient(ellipse 900px 900px at 15% 15%, rgba(62, 146, 204, 0.06) 0%, transparent 60%),
        radial-gradient(ellipse 700px 700px at 85% 25%, rgba(62, 146, 204, 0.04) 0%, transparent 60%),
        radial-gradient(ellipse 600px 600px at 50% 80%, rgba(62, 146, 204, 0.03) 0%, transparent 60%);
    animation: globalBgMove 40s ease-in-out infinite;
}

/* 次级光晕层 - 反向流动 */
.global-bg::after {
    content: '';
    position: absolute;
    top: -30%;
    left: -30%;
    width: 160%;
    height: 160%;
    background: 
        radial-gradient(ellipse 500px 500px at 75% 55%, rgba(62, 146, 204, 0.04) 0%, transparent 70%),
        radial-gradient(ellipse 400px 400px at 25% 70%, rgba(62, 146, 204, 0.03) 0%, transparent 70%);
    animation: globalBgMoveReverse 45s ease-in-out infinite;
}

@keyframes globalBgMove {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    50% {
        transform: translate(3%, 2%) scale(1.02);
    }
}

@keyframes globalBgMoveReverse {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    50% {
        transform: translate(-2%, -2%) scale(1.03);
    }
}

/* 动态浮动光球 */
.bg-dots {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
}

.bg-dot {
    position: absolute;
    border-radius: 50%;
    filter: blur(1px);
    animation: dotFloatSimple 20s infinite ease-in-out;
}

.bg-dot:nth-child(1) {
    width: 400px;
    height: 400px;
    top: 5%;
    left: 0%;
    background: radial-gradient(circle, rgba(62, 146, 204, 0.08) 0%, transparent 70%);
    animation-delay: 0s;
    animation-duration: 25s;
}

.bg-dot:nth-child(2) {
    width: 350px;
    height: 350px;
    top: 50%;
    right: 5%;
    background: radial-gradient(circle, rgba(62, 146, 204, 0.06) 0%, transparent 70%);
    animation-delay: -7s;
    animation-duration: 30s;
}

.bg-dot:nth-child(3) {
    width: 280px;
    height: 280px;
    bottom: 15%;
    left: 20%;
    background: radial-gradient(circle, rgba(62, 146, 204, 0.05) 0%, transparent 70%);
    animation-delay: -15s;
    animation-duration: 28s;
}

.bg-dot:nth-child(4) {
    width: 320px;
    height: 320px;
    top: 35%;
    left: 55%;
    background: radial-gradient(circle, rgba(62, 146, 204, 0.04) 0%, transparent 70%);
    animation-delay: -5s;
    animation-duration: 35s;
}

@keyframes dotFloatSimple {
    0%, 100% {
        transform: translate(0, 0) scale(1);
        opacity: 0.6;
    }
    25% {
        transform: translate(20px, -30px) scale(1.05);
        opacity: 0.8;
    }
    50% {
        transform: translate(-15px, 20px) scale(0.95);
        opacity: 0.5;
    }
    75% {
        transform: translate(25px, 15px) scale(1.02);
        opacity: 0.7;
    }
}

/* 精细网格线背景 */
.bg-grid {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    background-image: 
        linear-gradient(rgba(62, 146, 204, 0.025) 1px, transparent 1px),
        linear-gradient(90deg, rgba(62, 146, 204, 0.025) 1px, transparent 1px);
    background-size: 80px 80px;
    mask-image: radial-gradient(ellipse 90% 70% at 50% 40%, rgba(0,0,0,0.6), transparent);
    -webkit-mask-image: radial-gradient(ellipse 90% 70% at 50% 40%, rgba(0,0,0,0.6), transparent);
    animation: gridPulse 8s ease-in-out infinite;
}

@keyframes gridPulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.7;
    }
}

/* 流动光线效果 */
.bg-lines {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

.bg-line {
    position: absolute;
    width: 2px;
    height: 150px;
    background: linear-gradient(180deg, transparent, rgba(62, 146, 204, 0.15), transparent);
    animation: lineFloat 12s infinite ease-in-out;
}

.bg-line:nth-child(1) {
    left: 10%;
    animation-delay: 0s;
    height: 120px;
}

.bg-line:nth-child(2) {
    left: 25%;
    animation-delay: -3s;
    height: 180px;
}

.bg-line:nth-child(3) {
    left: 45%;
    animation-delay: -6s;
    height: 140px;
}

.bg-line:nth-child(4) {
    left: 65%;
    animation-delay: -2s;
    height: 160px;
}

.bg-line:nth-child(5) {
    left: 85%;
    animation-delay: -4s;
    height: 130px;
}

@keyframes lineFloat {
    0% {
        transform: translateY(-100%);
        opacity: 0;
    }
    10% {
        opacity: 1;
    }
    90% {
        opacity: 1;
    }
    100% {
        transform: translateY(100vh);
        opacity: 0;
    }
}

/* 微粒子效果 */
.bg-particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
}

.bg-particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: rgba(62, 146, 204, 0.3);
    border-radius: 50%;
    animation: particleFloat 15s infinite ease-in-out;
}

.bg-particle:nth-child(1) { left: 8%; top: 20%; animation-delay: 0s; }
.bg-particle:nth-child(2) { left: 22%; top: 45%; animation-delay: -2s; }
.bg-particle:nth-child(3) { left: 38%; top: 15%; animation-delay: -4s; }
.bg-particle:nth-child(4) { left: 52%; top: 65%; animation-delay: -6s; }
.bg-particle:nth-child(5) { left: 68%; top: 30%; animation-delay: -8s; }
.bg-particle:nth-child(6) { left: 82%; top: 55%; animation-delay: -10s; }
.bg-particle:nth-child(7) { left: 15%; top: 75%; animation-delay: -3s; }
.bg-particle:nth-child(8) { left: 75%; top: 80%; animation-delay: -7s; }

@keyframes particleFloat {
    0%, 100% {
        transform: translate(0, 0) scale(1);
        opacity: 0.3;
    }
    25% {
        transform: translate(15px, -25px) scale(1.5);
        opacity: 0.6;
    }
    50% {
        transform: translate(-10px, 20px) scale(0.8);
        opacity: 0.2;
    }
    75% {
        transform: translate(20px, 10px) scale(1.2);
        opacity: 0.5;
    }
}

/* 渐变叠加层 - 顶部和底部柔和渐变 */
.bg-gradient-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    background: 
        linear-gradient(180deg, rgba(232, 244, 252, 0.5) 0%, transparent 15%),
        linear-gradient(0deg, rgba(232, 244, 252, 0.5) 0%, transparent 15%);
}

[data-theme="dark"] .global-bg::before {
    background: 
        radial-gradient(ellipse 900px 900px at 15% 15%, rgba(62, 146, 204, 0.1) 0%, transparent 60%),
        radial-gradient(ellipse 700px 700px at 85% 25%, rgba(62, 146, 204, 0.08) 0%, transparent 60%),
        radial-gradient(ellipse 600px 600px at 50% 80%, rgba(62, 146, 204, 0.06) 0%, transparent 60%);
}

[data-theme="dark"] .bg-grid {
    background-image: 
        linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
}

[data-theme="dark"] .bg-particle {
    background: rgba(62, 146, 204, 0.4);
}

[data-theme="dark"] .bg-line {
    background: linear-gradient(180deg, transparent, rgba(62, 146, 204, 0.2), transparent);
}

/* 自定义滚动条 */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: var(--background);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--secondary), var(--primary));
    border-radius: 5px;
    border: 2px solid var(--background);
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(180deg, var(--secondary-light), var(--secondary));
}

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

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

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

/* ============================================================================
   工具类
   ============================================================================ */
.container {
    width: 100%;
    max-width: 1320px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.section {
    padding: var(--spacing-4xl) 0;
    position: relative;
    overflow: hidden;
    z-index: 1;
}

/* 区块背景装饰 - 增强版 */
.section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-mesh);
    opacity: 0.6;
    pointer-events: none;
    animation: sectionBgPulse 20s ease-in-out infinite;
}

@keyframes sectionBgPulse {
    0%, 100% { opacity: 0.4; }
    50% { opacity: 0.7; }
}

/* 奇数section添加渐变色带 */
.section:nth-of-type(odd)::after {
    content: '';
    position: absolute;
    top: 0;
    left: -50%;
    width: 200%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent 0%,
        rgba(62, 146, 204, 0.03) 25%,
        rgba(124, 58, 237, 0.02) 50%,
        rgba(0, 212, 255, 0.03) 75%,
        transparent 100%
    );
    animation: sectionGradientMove 30s linear infinite;
    pointer-events: none;
}

@keyframes sectionGradientMove {
    0% { transform: translateX(0); }
    100% { transform: translateX(50%); }
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
    position: relative;
    z-index: 1;
}

.section-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 8px 20px;
    background: linear-gradient(135deg, 
        rgba(62, 146, 204, 0.12) 0%, 
        rgba(124, 58, 237, 0.08) 50%,
        rgba(0, 212, 255, 0.1) 100%);
    border: 1px solid rgba(62, 146, 204, 0.25);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--secondary);
    margin-bottom: var(--spacing-md);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: 0 4px 15px rgba(62, 146, 204, 0.1);
}

.section-badge i {
    font-size: 0.8rem;
    color: var(--accent-cyan);
}

.section-title {
    font-size: clamp(2.25rem, 5vw, 3.5rem);
    font-weight: 800;
    background: linear-gradient(135deg, 
        #0A2463 0%, 
        #1A3A7C 25%, 
        #3E92CC 50%, 
        #00D4FF 75%,
        #7C3AED 100%);
    background-size: 200% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-sm);
    letter-spacing: -0.03em;
    animation: titleShine 8s linear infinite;
}

@keyframes titleShine {
    0% { background-position: 0% center; }
    100% { background-position: 200% center; }
}

.section-subtitle {
    font-size: 1.15rem;
    color: var(--text-secondary);
    max-width: 650px;
    margin: 0 auto;
    line-height: 1.7;
}

/* 装饰线 - 更精致 */
.section-line {
    width: 120px;
    height: 4px;
    background: linear-gradient(90deg, 
        #0A2463 0%, 
        #3E92CC 25%, 
        #00D4FF 50%, 
        #7C3AED 75%,
        #EC4899 100%);
    margin: var(--spacing-md) auto;
    border-radius: 2px;
    position: relative;
}

.section-line::before,
.section-line::after {
    content: '';
    position: absolute;
    width: 10px;
    height: 10px;
    background: linear-gradient(135deg, #00D4FF, #3E92CC);
    border-radius: 50%;
    top: 50%;
    transform: translateY(-50%);
    box-shadow: 0 0 15px rgba(0, 212, 255, 0.5);
}

.section-line::before {
    left: -16px;
}

.section-line::after {
    right: -12px;
    background: var(--accent-purple);
}

/* ============================================================================
   页面加载动画
   ============================================================================ */
.page-loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-hero);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.6s ease, visibility 0.6s ease;
}

.page-loader.loaded {
    opacity: 0;
    visibility: hidden;
}

.loader-content {
    text-align: center;
    color: white;
}

.loader-spinner {
    width: 60px;
    height: 60px;
    border: 3px solid rgba(255,255,255,0.2);
    border-top-color: var(--accent-cyan);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin: 0 auto var(--spacing-md);
}

.loader-text {
    font-weight: 600;
    font-size: 1.125rem;
    letter-spacing: 0.1em;
}

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

/* 进度条 */
.progress-loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: transparent;
    z-index: 10000;
}

.progress-bar {
    height: 100%;
    background: var(--gradient-accent);
    width: 0;
    transition: width 0.3s ease;
    box-shadow: 0 0 10px var(--accent-cyan);
}

/* ============================================================================
   导航栏 - 高端透明悬浮设计 V4.0
   ============================================================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 20px 0;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 初始状态：完全透明 */
.navbar::before {
    content: '';
    position: absolute;
    inset: 0;
    background: transparent;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 滚动后：深色玻璃效果 */
.navbar.scrolled {
    padding: 12px 0;
}

.navbar.scrolled::before {
    background: linear-gradient(
        135deg,
        rgba(6, 20, 40, 0.95) 0%,
        rgba(10, 36, 99, 0.92) 50%,
        rgba(15, 61, 122, 0.9) 100%
    );
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid rgba(62, 146, 204, 0.2);
    box-shadow: 
        0 4px 30px rgba(0, 0, 0, 0.3),
        0 1px 0 rgba(255, 255, 255, 0.05) inset;
}

/* 初始状态文字样式 - 白色 */
.navbar-logo,
.nav-link {
    color: rgba(255, 255, 255, 0.95);
}

.nav-link:hover {
    color: white;
    background: rgba(255, 255, 255, 0.1);
}

.search-toggle,
.theme-toggle {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.2);
    color: rgba(255, 255, 255, 0.9);
}

.search-toggle:hover,
.theme-toggle:hover {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    transform: scale(1.08);
}

/* scrolled状态保持白色 */
.navbar.scrolled .navbar-logo,
.navbar.scrolled .nav-link {
    color: rgba(255, 255, 255, 0.9);
}

.navbar.scrolled .nav-link:hover {
    background: rgba(255, 255, 255, 0.12);
    color: white;
}

.navbar.scrolled .search-toggle,
.navbar.scrolled .theme-toggle {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.15);
    color: rgba(255, 255, 255, 0.9);
}

.navbar.scrolled .search-toggle:hover,
.navbar.scrolled .theme-toggle:hover {
    background: rgba(255, 255, 255, 0.18);
    color: white;
}

.navbar-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: relative;
    z-index: 1;
    padding: 0 40px;
    max-width: 1400px;
    margin: 0 auto;
}

/* Logo - 透明背景适配 */
.navbar-logo {
    display: flex;
    align-items: center;
    gap: 14px;
    text-decoration: none;
    transition: all 0.3s ease;
}

.navbar-logo:hover {
    transform: translateY(-1px);
}

.logo-icon {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, 
        rgba(255, 255, 255, 0.2) 0%, 
        rgba(255, 255, 255, 0.1) 100%);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 12px;
    color: white;
    font-size: 1.2rem;
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: 
        0 4px 15px rgba(0, 0, 0, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.3);
    transition: all 0.3s ease;
}

.logo-icon::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.4) 0%, transparent 50%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.navbar-logo:hover .logo-icon {
    transform: rotate(-3deg) scale(1.05);
    background: linear-gradient(135deg, 
        rgba(255, 255, 255, 0.3) 0%, 
        rgba(255, 255, 255, 0.15) 100%);
    box-shadow: 
        0 8px 25px rgba(0, 0, 0, 0.15),
        0 0 30px rgba(0, 212, 255, 0.2);
}

.navbar-logo:hover .logo-icon::before {
    opacity: 1;
}

.logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.15;
}

.logo-main {
    font-size: 1.25rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    color: white;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.logo-sub {
    font-size: 0.7rem;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.7);
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.navbar.scrolled .logo-main {
    color: white;
}

.navbar.scrolled .logo-sub {
    color: rgba(255, 255, 255, 0.6);
}

/* 导航链接容器 - 透明悬浮设计 */
.navbar-links {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
}

.nav-links-wrapper {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 6px 8px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 50px;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    position: relative;
}

.navbar.scrolled .nav-links-wrapper {
    background: rgba(255, 255, 255, 0.06);
    border-color: rgba(255, 255, 255, 0.1);
}

.nav-link {
    position: relative;
    display: flex;
    align-items: center;
    gap: 8px;
    color: rgba(255, 255, 255, 0.8);
    font-weight: 500;
    font-size: 0.875rem;
    padding: 10px 18px;
    border-radius: 50px;
    transition: all 0.25s ease;
    z-index: 1;
}

.nav-link i {
    font-size: 0.8rem;
    opacity: 0.7;
    transition: all 0.25s ease;
}

.nav-link:hover {
    color: white;
    background: rgba(255, 255, 255, 0.12);
}

.nav-link:hover i {
    opacity: 1;
}

.nav-link.active {
    color: white;
    background: rgba(255, 255, 255, 0.2);
    box-shadow: 
        0 0 20px rgba(0, 212, 255, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

.nav-link.active i {
    opacity: 1;
    color: var(--accent-cyan);
}

.navbar.scrolled .nav-link {
    color: rgba(255, 255, 255, 0.75);
}

.navbar.scrolled .nav-link:hover {
    color: white;
    background: rgba(255, 255, 255, 0.1);
}

.navbar.scrolled .nav-link.active {
    color: white;
    background: rgba(255, 255, 255, 0.15);
    box-shadow: 
        0 0 15px rgba(0, 212, 255, 0.2),
        inset 0 1px 0 rgba(255, 255, 255, 0.15);
}

/* 导航指示器（滑动效果占位） */
.nav-indicator {
    display: none;
}

/* CTA按钮 - 透明高光设计 */
.navbar-cta {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 11px 24px;
    background: linear-gradient(135deg, 
        rgba(0, 212, 255, 0.9) 0%, 
        rgba(62, 146, 204, 0.9) 100%);
    color: white;
    font-weight: 600;
    font-size: 0.875rem;
    border-radius: 50px;
    transition: all 0.3s ease;
    box-shadow: 
        0 4px 20px rgba(0, 212, 255, 0.4),
        0 2px 8px rgba(0, 0, 0, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.3);
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.navbar-cta::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, 
        rgba(255, 255, 255, 0.3) 0%, 
        transparent 50%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.navbar-cta span,
.navbar-cta i {
    position: relative;
    z-index: 1;
}

.navbar-cta:hover {
    transform: translateY(-2px);
    box-shadow: 
        0 8px 30px rgba(0, 212, 255, 0.5),
        0 4px 15px rgba(0, 0, 0, 0.15),
        inset 0 1px 0 rgba(255, 255, 255, 0.4);
}

.navbar-cta:hover::before {
    opacity: 1;
}

.navbar-cta i {
    font-size: 0.75rem;
    transition: transform 0.3s ease;
}

.navbar-cta:hover i {
    transform: translateX(4px);
}

.navbar.scrolled .navbar-cta {
    background: linear-gradient(135deg, 
        rgba(0, 212, 255, 0.85) 0%, 
        rgba(62, 146, 204, 0.85) 100%);
    box-shadow: 
        0 4px 20px rgba(0, 212, 255, 0.35),
        inset 0 1px 0 rgba(255, 255, 255, 0.25);
}

.navbar.scrolled .navbar-cta:hover {
    box-shadow: 
        0 8px 30px rgba(0, 212, 255, 0.45),
        inset 0 1px 0 rgba(255, 255, 255, 0.35);
}

/* 导航功能按钮 */
.navbar-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.search-box {
    position: relative;
}

.search-toggle,
.theme-toggle {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255, 255, 255, 0.8);
    border-radius: 50%;
    transition: all 0.25s ease;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.15);
    font-size: 0.9rem;
}

.search-toggle:hover,
.theme-toggle:hover {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    transform: scale(1.1);
    border-color: rgba(255, 255, 255, 0.25);
}

.navbar.scrolled .search-toggle,
.navbar.scrolled .theme-toggle {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.12);
    color: rgba(255, 255, 255, 0.75);
}

.navbar.scrolled .search-toggle:hover,
.navbar.scrolled .theme-toggle:hover {
    background: rgba(255, 255, 255, 0.15);
    color: white;
}

.search-input-wrapper {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    width: 320px;
    padding: var(--spacing-sm);
    background: var(--glass-bg-strong);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-normal);
}

.search-box.active .search-input-wrapper {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.search-input {
    width: 100%;
    padding: 14px 18px;
    border: 2px solid var(--border);
    border-radius: var(--radius-md);
    background: var(--surface);
    color: var(--text);
    font-size: 1rem;
    outline: none;
    transition: all var(--transition-fast);
}

.search-input:focus {
    border-color: var(--secondary);
    box-shadow: 0 0 0 4px rgba(62, 146, 204, 0.1);
}

.theme-toggle .fa-sun {
    display: none;
}

[data-theme="dark"] .theme-toggle .fa-moon {
    display: none;
}

[data-theme="dark"] .theme-toggle .fa-sun {
    display: block;
}

/* 汉堡菜单 */
.menu-toggle {
    display: none;
    width: 44px;
    height: 44px;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
    cursor: pointer;
    background: var(--glass-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
}

.menu-toggle span {
    width: 22px;
    height: 2px;
    background: var(--text);
    border-radius: 2px;
    transition: all var(--transition-fast);
}

.menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 6px);
}

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

.menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -6px);
}

/* 移动端菜单 */
.mobile-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    z-index: 998;
}

.mobile-overlay.active {
    opacity: 1;
    visibility: visible;
}

.mobile-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 85%;
    max-width: 360px;
    height: 100vh;
    background: var(--surface);
    padding: var(--spacing-3xl) var(--spacing-lg);
    transition: right var(--transition-normal);
    z-index: 999;
    overflow-y: auto;
}

.mobile-menu.active {
    right: 0;
}

.mobile-nav-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-sm);
    color: var(--text);
    font-weight: 500;
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-xs);
    transition: all var(--transition-fast);
}

.mobile-nav-link:hover,
.mobile-nav-link.active {
    background: linear-gradient(135deg, rgba(62, 146, 204, 0.1), rgba(124, 58, 237, 0.05));
    color: var(--secondary);
}

.mobile-nav-link.active {
    border-left: 3px solid var(--secondary);
}

/* ============================================================================
   Hero 区域 - 超高端视觉设计
   ============================================================================ */
/* ============================================================================
   深蓝色动态背景 - 高端科技风格
   ============================================================================ */
.hero {
    min-height: 100vh;
    background: linear-gradient(180deg, 
        #0a1628 0%, 
        #0d1f3c 30%, 
        #102a4c 50%,
        #1a3a5c 70%,
        #2a4a6a 85%,
        #3a5a7a 100%);
    position: relative;
    display: flex;
    align-items: center;
    overflow: hidden;
}

/* 1. 动态网格层 */
.hero-grid {
    position: absolute;
    inset: 0;
    background-image: 
        linear-gradient(rgba(59, 130, 246, 0.06) 1px, transparent 1px),
        linear-gradient(90deg, rgba(59, 130, 246, 0.06) 1px, transparent 1px);
    background-size: 50px 50px;
    z-index: 1;
    mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, black 30%, transparent 80%);
    -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, black 30%, transparent 80%);
}

/* 2. 浮动光晕 - 深蓝色调 */
.hero-glow-1 {
    position: absolute;
    width: 800px;
    height: 800px;
    top: -300px;
    left: -200px;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.25) 0%, rgba(30, 64, 175, 0.1) 40%, transparent 70%);
    filter: blur(80px);
    animation: floatGlow1 15s ease-in-out infinite;
    z-index: 2;
}

.hero-glow-2 {
    position: absolute;
    width: 600px;
    height: 600px;
    top: -100px;
    right: -100px;
    background: radial-gradient(circle, rgba(14, 165, 233, 0.2) 0%, rgba(6, 182, 212, 0.08) 40%, transparent 70%);
    filter: blur(60px);
    animation: floatGlow2 18s ease-in-out infinite;
    z-index: 2;
}

.hero-glow-3 {
    position: absolute;
    width: 500px;
    height: 500px;
    bottom: 10%;
    left: 20%;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.15) 0%, rgba(79, 70, 229, 0.05) 40%, transparent 70%);
    filter: blur(50px);
    animation: floatGlow3 20s ease-in-out infinite;
    z-index: 2;
}

/* 3. 顶部微光 */
.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 400px;
    background: radial-gradient(ellipse 60% 40% at 50% 0%, rgba(59, 130, 246, 0.15) 0%, transparent 70%);
    z-index: 3;
    pointer-events: none;
}

/* 4. 底部渐变过渡 */
.hero::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 300px;
    background: linear-gradient(180deg, 
        transparent 0%,
        rgba(58, 90, 122, 0.3) 30%,
        rgba(100, 140, 180, 0.4) 60%,
        rgba(180, 210, 235, 0.6) 85%,
        #E8F4FC 100%);
    z-index: 4;
    pointer-events: none;
}

/* 5. 流动光线 */
.hero-streaks {
    position: absolute;
    inset: 0;
    z-index: 3;
    overflow: hidden;
}

.hero-streaks::before {
    content: '';
    position: absolute;
    width: 300%;
    height: 1px;
    top: 30%;
    left: -100%;
    background: linear-gradient(90deg, 
        transparent 0%, 
        rgba(59, 130, 246, 0.4) 20%,
        rgba(14, 165, 233, 0.8) 50%,
        rgba(59, 130, 246, 0.4) 80%,
        transparent 100%);
    animation: lightStreak 8s ease-in-out infinite;
}

.hero-streaks::after {
    content: '';
    position: absolute;
    width: 300%;
    height: 1px;
    top: 60%;
    left: -150%;
    background: linear-gradient(90deg, 
        transparent 0%, 
        rgba(99, 102, 241, 0.3) 30%,
        rgba(139, 92, 246, 0.6) 50%,
        rgba(99, 102, 241, 0.3) 70%,
        transparent 100%);
    animation: lightStreak 12s ease-in-out infinite;
    animation-delay: 4s;
}

@keyframes lightStreak {
    0% { transform: translateX(0); opacity: 0; }
    10% { opacity: 1; }
    90% { opacity: 1; }
    100% { transform: translateX(80%); opacity: 0; }
}

/* 6. 底部平滑过渡层 */
.hero-gradient-fade {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 200px;
    background: linear-gradient(180deg, 
        transparent 0%,
        rgba(232, 244, 252, 0.3) 50%,
        #E8F4FC 100%);
    z-index: 5;
    pointer-events: none;
}

/* 浮动动画 */
@keyframes floatGlow1 {
    0%, 100% { transform: translate(0, 0) scale(1); opacity: 0.8; }
    25% { transform: translate(40px, 30px) scale(1.1); opacity: 1; }
    50% { transform: translate(20px, 60px) scale(0.95); opacity: 0.9; }
    75% { transform: translate(-30px, 35px) scale(1.05); opacity: 1; }
}

@keyframes floatGlow2 {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(-50px, 40px) scale(1.1); }
    66% { transform: translate(30px, 20px) scale(0.92); }
}

@keyframes floatGlow3 {
    0%, 100% { transform: translate(0, 0); opacity: 0.7; }
    50% { transform: translate(60px, -50px); opacity: 1; }
}

/* 粒子层 - 星光点 */
.hero-particles-new {
    position: absolute;
    inset: 0;
    z-index: 3;
    background-image: 
        radial-gradient(2px 2px at 10% 20%, rgba(255,255,255,0.6), transparent),
        radial-gradient(1px 1px at 25% 45%, rgba(255,255,255,0.5), transparent),
        radial-gradient(2px 2px at 45% 12%, rgba(255,255,255,0.7), transparent),
        radial-gradient(1px 1px at 65% 35%, rgba(255,255,255,0.4), transparent),
        radial-gradient(2px 2px at 80% 65%, rgba(255,255,255,0.6), transparent),
        radial-gradient(1px 1px at 15% 75%, rgba(255,255,255,0.5), transparent),
        radial-gradient(1px 1px at 55% 80%, rgba(255,255,255,0.4), transparent),
        radial-gradient(2px 2px at 90% 25%, rgba(255,255,255,0.5), transparent),
        radial-gradient(1px 1px at 35% 90%, rgba(255,255,255,0.4), transparent),
        radial-gradient(1px 1px at 70% 85%, rgba(255,255,255,0.5), transparent);
    animation: sparkle 4s ease-in-out infinite;
}

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

/* 保留旧类名兼容性（隐藏） */
.hero-bg-base,
.hero-bg-orbs,
.hero-bg-streams,
.hero-bg-stars,
.hero-bg-aurora { display: none; }

/* 粒子背景 */
.hero-particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    overflow: hidden;
    z-index: 7;
}

.particle {
    position: absolute;
    border-radius: 50%;
    animation: float 20s infinite ease-in-out;
}

.particle:nth-child(odd) {
    background: radial-gradient(circle, rgba(0, 212, 255, 0.6), transparent 70%);
}

.particle:nth-child(even) {
    background: radial-gradient(circle, rgba(124, 58, 237, 0.5), transparent 70%);
}

@keyframes float {
    0%, 100% {
        transform: translateY(0) translateX(0) scale(1);
        opacity: 0.3;
    }
    25% {
        transform: translateY(-50px) translateX(30px) scale(1.1);
        opacity: 0.6;
    }
    50% {
        transform: translateY(-100px) translateX(-20px) scale(0.9);
        opacity: 0.8;
    }
    75% {
        transform: translateY(-50px) translateX(40px) scale(1.05);
        opacity: 0.5;
    }
}

/* 底部波浪 - 隐藏，使用CSS伪元素波浪 */
.hero-wave {
    display: none;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
    position: relative;
    z-index: 10;
}

/* 文字区域 - 深色背景适配白色文字 */
.hero-text {
    color: white;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: var(--spacing-lg);
    backdrop-filter: blur(10px);
    color: rgba(255, 255, 255, 0.9);
}

.hero-badge .dot {
    width: 8px;
    height: 8px;
    background: var(--accent-green);
    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: 800;
    line-height: 1.1;
    margin-bottom: var(--spacing-lg);
    letter-spacing: -0.03em;
    color: white;
}

.hero-title .highlight {
    background: linear-gradient(135deg, #38bdf8 0%, #0ea5e9 50%, #06b6d4 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-title .cursor {
    display: inline-block;
    width: 4px;
    height: 1em;
    background: #0ea5e9;
    margin-left: 4px;
    animation: blink 1s infinite;
    vertical-align: text-bottom;
    border-radius: 2px;
}

@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}

.hero-subtitle {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: var(--spacing-xl);
    line-height: 1.8;
    max-width: 500px;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

/* 按钮样式 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 16px 32px;
    border-radius: var(--radius-lg);
    font-weight: 600;
    font-size: 1rem;
    transition: all var(--transition-normal);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s;
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    background: linear-gradient(135deg, #0ea5e9 0%, #0284c7 100%);
    color: white;
    box-shadow: 
        0 8px 30px rgba(14, 165, 233, 0.4),
        inset 0 1px 0 rgba(255, 255, 255, 0.2);
    border: none;
}

.btn-primary:hover {
    transform: translateY(-5px) scale(1.02);
    box-shadow: 
        0 15px 40px rgba(14, 165, 233, 0.5),
        inset 0 1px 0 rgba(255, 255, 255, 0.3),
        0 0 30px rgba(14, 165, 233, 0.4);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-5px) scale(1.02);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.btn-gradient {
    background: var(--gradient-accent);
    color: white;
    box-shadow: 0 4px 20px rgba(62, 146, 204, 0.4);
}

.btn-gradient:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(62, 146, 204, 0.5);
}

/* 图形区域 */
.hero-graphic {
    position: relative;
    height: 500px;
}

.hero-graphic-inner {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
    height: 100%;
}

/* 浮动设备卡片 */
.hero-device {
    position: absolute;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-xl);
    padding: var(--spacing-md);
    animation: deviceFloat 6s ease-in-out infinite;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
}

.hero-device.device-1 {
    width: 180px;
    top: 10%;
    left: 5%;
    animation-delay: 0s;
}

.hero-device.device-2 {
    width: 220px;
    top: 25%;
    right: 0;
    animation-delay: 1s;
}

.hero-device.device-3 {
    width: 160px;
    bottom: 20%;
    left: 15%;
    animation-delay: 2s;
}

.hero-device-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
}

.hero-device-title {
    color: white;
    font-weight: 600;
    font-size: 0.875rem;
    margin-bottom: 4px;
}

.hero-device-desc {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.75rem;
}

@keyframes deviceFloat {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

/* 代码展示 */
.code-preview {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 320px;
    background: rgba(15, 23, 42, 0.9);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.1);
    overflow: hidden;
    box-shadow: var(--shadow-2xl);
}

.code-header {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 16px;
    background: rgba(0, 0, 0, 0.3);
}

.code-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.code-dot.red { background: #EF4444; }
.code-dot.yellow { background: #F59E0B; }
.code-dot.green { background: #10B981; }

.code-body {
    padding: 16px;
    font-family: 'Fira Code', monospace;
    font-size: 0.75rem;
    line-height: 1.8;
    color: #E2E8F0;
}

.code-line {
    display: block;
}

.code-keyword { color: #C792EA; }
.code-function { color: #82AAFF; }
.code-string { color: #C3E88D; }
.code-comment { color: #546E7A; }
.code-variable { color: #F78C6C; }

/* ============================================================================
   能力全景区 - 高端网格背景
   ============================================================================ */
.abilities {
    background: var(--background);
    position: relative;
    overflow: hidden;
}

.abilities::before {
    content: '';
    position: absolute;
    inset: 0;
    background: 
        linear-gradient(90deg, rgba(62, 146, 204, 0.03) 1px, transparent 1px),
        linear-gradient(rgba(62, 146, 204, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse 80% 50% at 50% 50%, black 40%, transparent 100%);
    -webkit-mask-image: radial-gradient(ellipse 80% 50% at 50% 50%, black 40%, transparent 100%);
}

.abilities::after {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(62, 146, 204, 0.08) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

/* 分类筛选 */
.filter-tabs {
    display: flex;
    justify-content: center;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: var(--spacing-2xl);
    padding: var(--spacing-sm);
    background: var(--surface);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
}

.filter-tab {
    padding: 12px 24px;
    color: var(--text-secondary);
    font-weight: 500;
    background: transparent;
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.filter-tab:hover {
    color: var(--secondary);
    background: rgba(62, 146, 204, 0.08);
}

.filter-tab.active {
    color: white;
    background: var(--gradient-primary);
    box-shadow: var(--shadow-md);
}

/* 能力卡片网格 */
.abilities-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
}

/* 能力卡片 - 超高端设计 */
.ability-card {
    background: linear-gradient(145deg, 
        rgba(255, 255, 255, 0.98) 0%, 
        rgba(255, 255, 255, 0.92) 100%);
    border: 1px solid rgba(255, 255, 255, 0.8);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 
        0 4px 20px rgba(10, 36, 99, 0.06),
        0 0 0 1px rgba(255, 255, 255, 0.5),
        inset 0 1px 0 rgba(255, 255, 255, 1);
}

.ability-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #0A2463, #3E92CC, #00D4FF, #7C3AED);
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.ability-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 50% 0%, rgba(62, 146, 204, 0.08) 0%, transparent 60%);
    opacity: 0;
    transition: opacity var(--transition-normal);
    pointer-events: none;
}

.ability-card:hover {
    transform: translateY(-12px);
    box-shadow: 
        0 20px 50px rgba(10, 36, 99, 0.15),
        0 0 0 1px rgba(62, 146, 204, 0.2),
        inset 0 1px 0 rgba(255, 255, 255, 1);
    border-color: rgba(62, 146, 204, 0.3);
}

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

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

.ability-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, 
        rgba(62, 146, 204, 0.12) 0%, 
        rgba(124, 58, 237, 0.08) 50%,
        rgba(0, 212, 255, 0.1) 100%);
    border-radius: var(--radius-xl);
    color: var(--secondary);
    font-size: 1.75rem;
    margin-bottom: var(--spacing-md);
    transition: all var(--transition-normal);
    border: 1px solid rgba(62, 146, 204, 0.15);
}

.ability-card:hover .ability-icon {
    background: linear-gradient(135deg, #0A2463 0%, #3E92CC 50%, #00D4FF 100%);
    color: white;
    transform: scale(1.1) rotate(-5deg);
    border-color: transparent;
    box-shadow: 
        0 10px 30px rgba(62, 146, 204, 0.3),
        0 0 20px rgba(0, 212, 255, 0.2);
}

/* 能力卡片图片区域 */
.ability-image {
    position: relative;
    width: 100%;
    height: 140px;
    margin: calc(var(--spacing-xl) * -1);
    margin-bottom: var(--spacing-md);
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
    overflow: hidden;
}

.ability-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.ability-card:hover .ability-image img {
    transform: scale(1.1);
}

.ability-image-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 0%, rgba(10, 36, 99, 0.8) 100%);
    display: flex;
    align-items: flex-end;
    justify-content: flex-start;
    padding: var(--spacing-md);
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.ability-card:hover .ability-image-overlay {
    opacity: 1;
}

.ability-image-overlay i {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-md);
    color: white;
    font-size: 1.25rem;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

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

.ability-card:has(.ability-image) {
    padding: 0;
}

.ability-card:has(.ability-image) .ability-content {
    padding: var(--spacing-md) var(--spacing-xl) var(--spacing-xl);
}

.ability-name {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--text);
    margin-bottom: var(--spacing-xs);
}

.ability-desc {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}

.ability-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.ability-tag {
    padding: 4px 12px;
    background: linear-gradient(135deg, rgba(62, 146, 204, 0.1), rgba(124, 58, 237, 0.05));
    color: var(--secondary);
    font-size: 0.75rem;
    border-radius: var(--radius-full);
    font-weight: 500;
    border: 1px solid rgba(62, 146, 204, 0.2);
}

/* ============================================================================
   产品演示区 - 沉浸式3D展示
   ============================================================================ */
.demo {
    background: var(--background);
    position: relative;
    overflow: hidden;
}

.demo::before {
    content: '';
    position: absolute;
    inset: 0;
    background: 
        linear-gradient(90deg, rgba(62, 146, 204, 0.03) 1px, transparent 1px),
        linear-gradient(rgba(62, 146, 204, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse 80% 50% at 50% 50%, black 40%, transparent 100%);
    -webkit-mask-image: radial-gradient(ellipse 80% 50% at 50% 50%, black 40%, transparent 100%);
    pointer-events: none;
}

.demo::after {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(62, 146, 204, 0.08) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.demo .section-header {
    position: relative;
    z-index: 1;
}

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

.demo .section-subtitle {
    color: var(--text-secondary);
}

.demo .section-badge {
    background: linear-gradient(135deg, 
        rgba(62, 146, 204, 0.12) 0%, 
        rgba(124, 58, 237, 0.08) 50%,
        rgba(0, 212, 255, 0.1) 100%);
    border: 1px solid rgba(62, 146, 204, 0.25);
    color: var(--secondary);
}

.demo .section-line {
    background: linear-gradient(90deg, 
        #0A2463 0%, 
        #3E92CC 25%, 
        #00D4FF 50%, 
        #7C3AED 75%,
        #EC4899 100%);
}

.demo .section-line::before,
.demo .section-line::after {
    background: linear-gradient(135deg, #00D4FF, #3E92CC);
    box-shadow: 0 0 15px rgba(0, 212, 255, 0.5);
}

.demo-tabs {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-2xl);
    position: relative;
    z-index: 1;
    padding: 8px;
    background: var(--surface);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
}

.demo-tab {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 28px;
    background: transparent;
    border: 2px solid transparent;
    border-radius: var(--radius-xl);
    color: var(--text-secondary);
    font-weight: 600;
    transition: all var(--transition-fast);
}

.demo-tab i {
    font-size: 1.25rem;
}

.demo-tab:hover {
    color: var(--secondary);
    background: rgba(62, 146, 204, 0.08);
}

.demo-tab.active {
    background: var(--gradient-primary);
    color: white;
    border-color: transparent;
    box-shadow: var(--shadow-md);
}

/* 设备展示 */
.demo-container {
    display: flex;
    justify-content: center;
    perspective: 2000px;
    position: relative;
    z-index: 1;
}

.demo-device {
    display: none;
    animation: deviceFloat 0.8s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.demo-device.active {
    display: block;
}

@keyframes deviceFloat {
    from { 
        opacity: 0; 
        transform: scale(0.8) translateY(60px) rotateX(10deg); 
    }
    to { 
        opacity: 1; 
        transform: scale(1) translateY(0) rotateX(0); 
    }
}

/* 手机框架 - 超高端金属质感 */
.phone-frame {
    width: 340px;
    height: 700px;
    background: linear-gradient(145deg, #2D3748 0%, #1A202C 50%, #171923 100%);
    border-radius: 48px;
    padding: 12px;
    box-shadow: 
        0 50px 100px rgba(0, 0, 0, 0.5),
        0 0 0 1px rgba(255, 255, 255, 0.1),
        0 0 80px rgba(62, 146, 204, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.15),
        inset 0 -1px 0 rgba(0, 0, 0, 0.3);
    position: relative;
    transition: transform var(--transition-slow);
}

.phone-frame:hover {
    transform: rotateY(-5deg) rotateX(2deg) scale(1.02);
}

.phone-frame::before {
    content: '';
    position: absolute;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    width: 120px;
    height: 32px;
    background: linear-gradient(180deg, #0F172A 0%, #000 100%);
    border-radius: 20px;
    box-shadow: inset 0 2px 4px rgba(255, 255, 255, 0.1);
}

.phone-frame::after {
    content: '';
    position: absolute;
    top: 28px;
    left: 50%;
    transform: translateX(-50%) translateX(40px);
    width: 12px;
    height: 12px;
    background: radial-gradient(circle, #3E92CC 0%, #1E3A5F 100%);
    border-radius: 50%;
    box-shadow: 0 0 10px rgba(62, 146, 204, 0.5);
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: var(--surface);
    border-radius: 36px;
    overflow: hidden;
    position: relative;
}

/* 电脑框架 */
.desktop-frame {
    width: 850px;
    max-width: 100%;
}

.desktop-screen {
    background: linear-gradient(145deg, #E8F4FC, #E2E8F0);
    border-radius: 16px 16px 0 0;
    padding: 10px;
    box-shadow: var(--shadow-2xl);
}

.desktop-screen-inner {
    width: 100%;
    height: 480px;
    background: var(--surface);
    border-radius: 8px;
    overflow: hidden;
    position: relative;
}

.desktop-stand {
    width: 180px;
    height: 80px;
    background: linear-gradient(180deg, #CBD5E1 0%, #94A3B8 100%);
    margin: 0 auto;
    clip-path: polygon(15% 0, 85% 0, 100% 100%, 0% 100%);
}

.desktop-base {
    width: 260px;
    height: 16px;
    background: linear-gradient(180deg, #94A3B8, #64748B);
    margin: 0 auto;
    border-radius: 0 0 8px 8px;
}

/* 演示UI */
.demo-ui {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.demo-header {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--gradient-primary);
    color: white;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.demo-header-title {
    font-weight: 600;
}

.demo-content {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-md);
    background: var(--background);
}

.demo-navbar {
    display: flex;
    justify-content: space-around;
    padding: var(--spacing-sm);
    background: var(--surface);
    border-top: 1px solid var(--border);
}

.demo-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    color: var(--text-muted);
    font-size: 0.75rem;
    cursor: pointer;
    transition: all var(--transition-fast);
    padding: 8px 16px;
    border-radius: var(--radius-md);
}

.demo-nav-item:hover,
.demo-nav-item.active {
    color: var(--secondary);
    background: rgba(62, 146, 204, 0.08);
}

.demo-nav-item i {
    font-size: 1.25rem;
}

.demo-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.demo-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(62, 146, 204, 0.1), transparent);
    transition: left 0.5s ease;
}

.demo-card:hover::before {
    left: 100%;
}

.demo-card:hover {
    border-color: var(--secondary);
    transform: translateY(-2px) scale(1.01);
    box-shadow: 0 8px 20px rgba(62, 146, 204, 0.15);
}

.demo-card:active {
    transform: scale(0.97);
    box-shadow: 0 2px 8px rgba(62, 146, 204, 0.2);
}

/* 快捷入口交互 */
.quick-entry {
    transition: all 0.2s ease;
}

.quick-entry:hover {
    transform: translateY(-3px);
}

.quick-entry:active {
    transform: scale(0.95);
}

/* 统计项交互 */
.stat-item {
    transition: all 0.2s ease;
}

.stat-item:hover {
    transform: scale(1.05);
}

.stat-item:active {
    transform: scale(0.95);
}

/* 消息标签交互 */
.msg-tab {
    transition: all 0.2s ease !important;
}

.msg-tab:hover {
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.msg-tab:active {
    transform: scale(0.95);
}

/* 购物车数量按钮 */
.qty-btn {
    transition: all 0.15s ease !important;
}

.qty-btn:hover {
    transform: scale(1.1);
}

.qty-btn:active {
    transform: scale(0.9);
}

/* 订单状态交互 */
.order-status {
    transition: all 0.2s ease;
}

.order-status:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.order-status:active {
    transform: scale(0.95);
}

/* 产品卡片交互 */
.product-card {
    transition: all 0.25s ease !important;
}

.product-card:hover {
    transform: translateY(-4px) !important;
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.12) !important;
}

/* 服务卡片交互 */
.service-card {
    transition: all 0.25s ease !important;
}

.service-card:hover {
    transform: translateY(-4px) !important;
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.12) !important;
    border-color: var(--secondary) !important;
}

/* 购物车商品项 */
.cart-item {
    transition: all 0.2s ease;
}

.cart-item:hover {
    background: rgba(7, 193, 96, 0.03) !important;
}

/* 优惠券卡片 */
.coupon-card {
    transition: all 0.2s ease !important;
}

.coupon-card:hover {
    transform: translateX(3px);
    background: #fff9e6 !important;
}

/* 表格行交互 */
.table-row {
    transition: all 0.15s ease;
}

.table-row:hover {
    background: rgba(62, 146, 204, 0.05) !important;
}

/* 侧边栏项交互 */
.desktop-sidebar-item {
    transition: all 0.2s ease;
}

.desktop-sidebar-item:hover {
    background: rgba(62, 146, 204, 0.08);
    color: var(--secondary);
    padding-left: 12px;
}

.demo-hint {
    position: absolute;
    bottom: var(--spacing-lg);
    right: var(--spacing-lg);
    padding: 10px 18px;
    background: rgba(10, 36, 99, 0.9);
    color: white;
    font-size: 0.8rem;
    border-radius: var(--radius-full);
    opacity: 0;
    transition: opacity var(--transition-normal);
    backdrop-filter: blur(10px);
}

.demo-device:hover .demo-hint {
    opacity: 1;
}

/* ============================================================================
   案例展示区
   ============================================================================ */
.cases {
    background: var(--background);
}

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

/* 案例卡片 */
.case-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: all var(--transition-normal);
    position: relative;
}

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

.case-card:hover {
    transform: translateY(-12px);
    box-shadow: var(--shadow-2xl), var(--shadow-glow);
}

.case-card:hover::before {
    opacity: 0.03;
}

/* 案例图片区 - 全新设计 */
.case-image-wrapper {
    position: relative;
    height: 240px;
    overflow: hidden;
}

/* 真实项目图片 */
.case-real-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.case-card:hover .case-real-image {
    transform: scale(1.08);
}

/* 备用背景（图片加载失败时显示） */
.case-image-fallback {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 50%, #7C3AED 100%);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: white;
    gap: 12px;
}

.case-image-fallback i {
    font-size: 48px;
    opacity: 0.8;
}

.case-image-fallback span {
    font-size: 14px;
    opacity: 0.9;
    text-align: center;
    padding: 0 20px;
}

.case-image-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    transition: transform var(--transition-slow);
}

/* 不同案例类型的渐变背景 */
.case-card[data-category="web"] .case-image-bg {
    background: linear-gradient(135deg, #0A2463 0%, #3E92CC 50%, #00D4FF 100%);
}

.case-card[data-category="app"] .case-image-bg {
    background: linear-gradient(135deg, #7C3AED 0%, #EC4899 50%, #F59E0B 100%);
}

.case-card[data-category="miniprogram"] .case-image-bg {
    background: linear-gradient(135deg, #10B981 0%, #3B82F6 50%, #8B5CF6 100%);
}

.case-card[data-category="desktop"] .case-image-bg {
    background: linear-gradient(135deg, #1E293B 0%, #475569 50%, #64748B 100%);
}

.case-card[data-category="spider"] .case-image-bg {
    background: linear-gradient(135deg, #DC2626 0%, #F59E0B 50%, #FBBF24 100%);
}

.case-card:hover .case-image-bg {
    transform: scale(1.1);
}

/* 设备展示容器 */
.case-devices {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 90%;
    height: 80%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.case-device-mockup {
    position: absolute;
    background: white;
    border-radius: 8px;
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform var(--transition-normal);
}

.case-device-mockup.desktop {
    width: 65%;
    height: 70%;
    left: 5%;
    top: 15%;
    border-radius: 8px;
}

.case-device-mockup.tablet {
    width: 28%;
    height: 50%;
    right: 18%;
    top: 25%;
    border-radius: 10px;
}

.case-device-mockup.phone {
    width: 18%;
    height: 45%;
    right: 5%;
    bottom: 10%;
    border-radius: 12px;
}

.case-card:hover .case-device-mockup {
    transform: scale(1.05);
}

/* 设备内容占位 */
.case-device-content {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: linear-gradient(180deg, var(--background) 0%, var(--background-alt) 100%);
    padding: 10%;
}

.case-device-icon {
    font-size: 2rem;
    color: var(--secondary);
    margin-bottom: 8px;
    opacity: 0.5;
}

.case-device-text {
    font-size: 0.6rem;
    color: var(--text-muted);
    text-align: center;
}

/* 案例标签覆盖 */
.case-overlay {
    position: absolute;
    top: var(--spacing-md);
    left: var(--spacing-md);
    display: flex;
    gap: 8px;
}

.case-badge {
    padding: 6px 14px;
    background: rgba(255, 255, 255, 0.95);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--primary);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
}

/* 案例信息区 */
.case-info {
    padding: var(--spacing-xl);
    position: relative;
    z-index: 1;
}

.case-name {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text);
    margin-bottom: var(--spacing-sm);
}

.case-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: var(--spacing-md);
}

.case-tag {
    padding: 6px 14px;
    background: var(--gradient-accent);
    color: white;
    font-size: 0.75rem;
    border-radius: var(--radius-full);
    font-weight: 500;
}

.case-desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.7;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: var(--spacing-lg);
}

.case-buttons {
    display: flex;
    gap: var(--spacing-sm);
}

.case-btn {
    flex: 1;
    padding: 12px 20px;
    text-align: center;
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.case-btn-detail {
    color: white;
    background: var(--gradient-primary);
}

.case-btn-detail:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.case-btn-demo {
    color: var(--text-secondary);
    background: var(--background);
    border: 1px solid var(--border);
}

.case-btn-demo:hover {
    background: var(--text);
    color: white;
    border-color: var(--text);
}

/* ============================================================================
   需求定制区 - 高端双色渐变背景
   ============================================================================ */
.customize {
    background: 
        linear-gradient(135deg, #E8F4FC 0%, #EEF2F7 50%, #E8F4FD 100%);
    position: relative;
    overflow: hidden;
}

.customize::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 400px;
    background: linear-gradient(180deg, 
        rgba(10, 36, 99, 0.03) 0%, 
        rgba(62, 146, 204, 0.05) 50%,
        transparent 100%);
    pointer-events: none;
}

.customize::after {
    content: '';
    position: absolute;
    bottom: -200px;
    right: -200px;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(124, 58, 237, 0.08) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.customize-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--spacing-2xl);
    position: relative;
    z-index: 1;
}

/* 联系卡片 - 高端玻璃卡片 */
.contact-card {
    background: linear-gradient(145deg, 
        rgba(255, 255, 255, 0.95) 0%, 
        rgba(255, 255, 255, 0.8) 100%);
    backdrop-filter: blur(40px);
    -webkit-backdrop-filter: blur(40px);
    border: 1px solid rgba(255, 255, 255, 0.8);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-2xl);
    box-shadow: 
        0 20px 60px rgba(10, 36, 99, 0.1),
        0 0 0 1px rgba(255, 255, 255, 0.5),
        inset 0 1px 0 rgba(255, 255, 255, 1);
    height: fit-content;
    position: sticky;
    top: 100px;
    transition: all var(--transition-normal);
}

.contact-card:hover {
    transform: translateY(-5px);
    box-shadow: 
        0 30px 80px rgba(10, 36, 99, 0.15),
        0 0 0 1px rgba(255, 255, 255, 0.5),
        inset 0 1px 0 rgba(255, 255, 255, 1);
}

.contact-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text);
    margin-bottom: var(--spacing-xl);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.contact-title i {
    color: var(--secondary);
}

.contact-list {
    margin-bottom: var(--spacing-xl);
}

.contact-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-fast);
    margin-bottom: var(--spacing-xs);
}

.contact-item:hover {
    background: linear-gradient(135deg, rgba(62, 146, 204, 0.08), rgba(124, 58, 237, 0.04));
}

.contact-item i {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-accent);
    color: white;
    border-radius: var(--radius-md);
    font-size: 1.125rem;
}

.contact-item span {
    font-weight: 600;
    color: var(--text);
}

/* 服务保障 */
.guarantee-title {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--text);
    margin-bottom: var(--spacing-md);
}

.guarantee-list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
}

.guarantee-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.guarantee-item:hover {
    background: rgba(62, 146, 204, 0.05);
}

.guarantee-item i {
    color: var(--accent-green);
    font-size: 1.125rem;
}

.guarantee-item span {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.contact-btn {
    width: 100%;
    padding: var(--spacing-md);
    background: var(--gradient-accent);
    color: white;
    font-weight: 600;
    font-size: 1rem;
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.contact-btn:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-glow);
}

/* 表单卡片 - 高端玻璃态 */
.form-card {
    background: linear-gradient(145deg, 
        rgba(255, 255, 255, 0.98) 0%, 
        rgba(255, 255, 255, 0.9) 100%);
    backdrop-filter: blur(40px);
    -webkit-backdrop-filter: blur(40px);
    border: 1px solid rgba(255, 255, 255, 0.9);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-2xl);
    box-shadow: 
        0 30px 80px rgba(10, 36, 99, 0.1),
        0 0 0 1px rgba(255, 255, 255, 0.5),
        inset 0 1px 0 rgba(255, 255, 255, 1);
    position: relative;
    overflow: hidden;
}

.form-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #0A2463, #3E92CC, #00D4FF, #7C3AED);
}

/* 步骤进度条 */
.form-steps {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-2xl);
    position: relative;
}

.form-steps::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--border);
    transform: translateY(-50%);
    z-index: 0;
    border-radius: 2px;
}

.step-progress {
    position: absolute;
    top: 50%;
    left: 0;
    height: 3px;
    background: var(--gradient-accent);
    transform: translateY(-50%);
    z-index: 1;
    transition: width var(--transition-normal);
    border-radius: 2px;
}

.step-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    position: relative;
    z-index: 2;
}

.step-number {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--surface);
    border: 3px solid var(--border);
    border-radius: 50%;
    font-weight: 700;
    color: var(--text-muted);
    transition: all var(--transition-fast);
}

.step-item.active .step-number,
.step-item.completed .step-number {
    background: var(--gradient-accent);
    border-color: transparent;
    color: white;
    box-shadow: var(--shadow-glow);
}

.step-item.completed .step-number {
    background: var(--gradient-primary);
}

.step-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: 500;
}

.step-item.active .step-label {
    color: var(--secondary);
    font-weight: 600;
}

/* 表单步骤 */
.form-step {
    display: none;
    animation: slideIn 0.4s ease;
}

.form-step.active {
    display: block;
}

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

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

.form-label {
    display: block;
    font-weight: 600;
    color: var(--text);
    margin-bottom: var(--spacing-xs);
}

.form-label .required {
    color: var(--accent-red);
    margin-left: 4px;
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 14px 18px;
    background: var(--surface);
    border: 2px solid var(--border);
    border-radius: var(--radius-md);
    color: var(--text);
    font-size: 1rem;
    outline: none;
    transition: all var(--transition-fast);
}

.form-input:hover,
.form-select:hover,
.form-textarea:hover {
    border-color: var(--secondary);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    border-color: var(--secondary);
    box-shadow: 0 0 0 4px rgba(62, 146, 204, 0.1);
}

.form-textarea {
    min-height: 140px;
    resize: vertical;
}

.form-error {
    color: var(--accent-red);
    font-size: 0.8rem;
    margin-top: var(--spacing-xs);
    display: none;
}

.form-group.error .form-input,
.form-group.error .form-select,
.form-group.error .form-textarea {
    border-color: var(--accent-red);
}

.form-group.error .form-error {
    display: block;
}

/* 单选按钮 */
.radio-group {
    display: flex;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

.radio-item {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    padding: 10px 16px;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.radio-item:hover {
    background: rgba(62, 146, 204, 0.05);
}

.radio-item input {
    display: none;
}

.radio-custom {
    width: 22px;
    height: 22px;
    border: 2px solid var(--border);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.radio-custom::after {
    content: '';
    width: 10px;
    height: 10px;
    background: var(--gradient-accent);
    border-radius: 50%;
    opacity: 0;
    transform: scale(0);
    transition: all var(--transition-fast);
}

.radio-item input:checked + .radio-custom {
    border-color: var(--secondary);
}

.radio-item input:checked + .radio-custom::after {
    opacity: 1;
    transform: scale(1);
}

/* 文件上传 */
.file-upload {
    border: 2px dashed var(--border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-fast);
    background: var(--background);
}

.file-upload:hover {
    border-color: var(--secondary);
    background: rgba(62, 146, 204, 0.03);
}

.file-upload-icon {
    font-size: 3rem;
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-sm);
}

.file-upload-text {
    color: var(--text);
    font-weight: 500;
    margin-bottom: 4px;
}

.file-upload-hint {
    color: var(--text-muted);
    font-size: 0.8rem;
}

/* 表单按钮 */
.form-buttons {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
}

.form-btn {
    flex: 1;
    padding: 16px 24px;
    font-weight: 600;
    font-size: 1rem;
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.form-btn-prev {
    background: var(--background);
    color: var(--text);
    border: 2px solid var(--border);
}

.form-btn-prev:hover {
    background: var(--text);
    color: white;
    border-color: var(--text);
}

.form-btn-next,
.form-btn-submit {
    background: var(--gradient-accent);
    color: white;
}

.form-btn-next:hover,
.form-btn-submit:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-glow);
}

.form-btn:disabled {
    background: var(--border);
    color: var(--text-muted);
    cursor: not-allowed;
    transform: none !important;
    box-shadow: none !important;
}

/* ============================================================================
   关于我区 - 超高端设计
   ============================================================================ */
.about {
    background: linear-gradient(180deg, #E8F4FC 0%, #FFFFFF 50%, #F0F7FF 100%);
    position: relative;
    overflow: hidden;
}

.about::before {
    content: '';
    position: absolute;
    top: 0;
    left: -50%;
    width: 200%;
    height: 100%;
    background: 
        radial-gradient(ellipse 40% 30% at 20% 20%, rgba(62, 146, 204, 0.08) 0%, transparent 100%),
        radial-gradient(ellipse 50% 40% at 80% 80%, rgba(124, 58, 237, 0.06) 0%, transparent 100%);
    pointer-events: none;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--spacing-2xl);
    position: relative;
    z-index: 1;
}

/* 个人卡片 - 高端立体设计 */
.about-personal {
    background: linear-gradient(145deg, 
        rgba(255, 255, 255, 0.98) 0%, 
        rgba(255, 255, 255, 0.95) 100%);
    backdrop-filter: blur(40px);
    -webkit-backdrop-filter: blur(40px);
    border: 1px solid rgba(255, 255, 255, 0.9);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-2xl);
    text-align: center;
    box-shadow: 
        0 30px 80px rgba(10, 36, 99, 0.12),
        0 0 0 1px rgba(255, 255, 255, 0.5),
        inset 0 1px 0 rgba(255, 255, 255, 1);
    position: relative;
    overflow: hidden;
    transition: all var(--transition-normal);
}

.about-personal:hover {
    transform: translateY(-8px);
    box-shadow: 
        0 40px 100px rgba(10, 36, 99, 0.18),
        0 0 0 1px rgba(255, 255, 255, 0.5),
        inset 0 1px 0 rgba(255, 255, 255, 1);
}

.about-personal::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 140px;
    background: linear-gradient(135deg, #0A2463 0%, #1A3A7C 30%, #3E92CC 70%, #00D4FF 100%);
}

.about-personal::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 140px;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.about-avatar {
    width: 160px;
    height: 160px;
    border-radius: 50%;
    border: 6px solid white;
    margin: 60px auto var(--spacing-md);
    overflow: hidden;
    box-shadow: 
        0 20px 50px rgba(10, 36, 99, 0.25),
        0 0 0 4px rgba(62, 146, 204, 0.3),
        0 0 60px rgba(0, 212, 255, 0.2);
    position: relative;
    z-index: 2;
    background: linear-gradient(135deg, #3E92CC 0%, #00D4FF 50%, #7C3AED 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-normal);
}

.about-personal:hover .about-avatar {
    transform: scale(1.05);
    box-shadow: 
        0 25px 60px rgba(10, 36, 99, 0.3),
        0 0 0 6px rgba(62, 146, 204, 0.4),
        0 0 80px rgba(0, 212, 255, 0.3);
}

.about-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.about-avatar-placeholder {
    font-size: 3rem;
    color: white;
    font-weight: 700;
}

.about-name {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--text);
    margin-bottom: 4px;
}

.about-title {
    font-size: 1rem;
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
}

.about-desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-xl);
    text-align: left;
}

/* 统计 - 高端数据展示 */
.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, #E8F4FC 0%, #EEF2F7 100%);
    border-radius: var(--radius-xl);
    border: 1px solid rgba(226, 232, 240, 0.8);
}

.stat-item {
    text-align: center;
    padding: var(--spacing-sm);
    position: relative;
}

.stat-item:not(:last-child)::after {
    content: '';
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 1px;
    height: 60%;
    background: linear-gradient(180deg, transparent, rgba(62, 146, 204, 0.3), transparent);
}

.stat-number {
    font-size: 2.25rem;
    font-weight: 800;
    background: linear-gradient(135deg, #0A2463 0%, #3E92CC 50%, #00D4FF 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 600;
    margin-top: 4px;
}

/* 社交链接 */
.about-social {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
}

.social-link {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--background);
    color: var(--text-secondary);
    border-radius: var(--radius-lg);
    font-size: 1.25rem;
    transition: all var(--transition-fast);
    border: 1px solid var(--border);
}

.social-link:hover {
    background: var(--gradient-accent);
    color: white;
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
    border-color: transparent;
}

/* 技术栈和荣誉 */
.about-details {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.skills-card,
.honors-card {
    background: linear-gradient(145deg, 
        rgba(255, 255, 255, 0.98) 0%, 
        rgba(255, 255, 255, 0.95) 100%);
    backdrop-filter: blur(40px);
    -webkit-backdrop-filter: blur(40px);
    border: 1px solid rgba(255, 255, 255, 0.9);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-xl);
    box-shadow: 
        0 20px 60px rgba(10, 36, 99, 0.08),
        0 0 0 1px rgba(255, 255, 255, 0.5),
        inset 0 1px 0 rgba(255, 255, 255, 1);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.skills-card:hover,
.honors-card:hover {
    transform: translateY(-5px);
    box-shadow: 
        0 30px 80px rgba(10, 36, 99, 0.12),
        0 0 0 1px rgba(255, 255, 255, 0.5),
        inset 0 1px 0 rgba(255, 255, 255, 1);
}

.skills-card::before,
.honors-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #0A2463, #3E92CC, #00D4FF, #7C3AED);
}

.card-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text);
    margin-bottom: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.card-title i {
    color: var(--secondary);
}

.skills-chart {
    height: 280px;
}

/* 荣誉 */
.honors-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
}

.honor-item {
    aspect-ratio: 4/3;
    background: var(--gradient-accent);
    border-radius: var(--radius-lg);
    overflow: hidden;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.honor-item:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-glow);
}

.honor-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.honor-placeholder {
    color: white;
    font-size: 2rem;
    opacity: 0.5;
}

/* ============================================================================
   页脚 - 高端深色设计
   ============================================================================ */
.footer {
    background: linear-gradient(180deg, 
        #061428 0%, 
        #0A1F3D 50%,
        #051020 100%);
    color: white;
    padding: var(--spacing-4xl) 0 var(--spacing-xl);
    position: relative;
    overflow: hidden;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(62, 146, 204, 0.5), rgba(0, 212, 255, 0.5), rgba(124, 58, 237, 0.5), transparent);
}

.footer::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(ellipse 60% 40% at 20% 80%, rgba(0, 212, 255, 0.1), transparent),
        radial-gradient(ellipse 40% 30% at 80% 20%, rgba(124, 58, 237, 0.1), transparent);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
    position: relative;
    z-index: 1;
}

.footer-section h4 {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.footer-section h4::before {
    content: '';
    width: 4px;
    height: 20px;
    background: var(--gradient-accent);
    border-radius: 2px;
}

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

.footer-link {
    opacity: 0.8;
    font-size: 0.9rem;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    gap: 8px;
}

.footer-link:hover {
    opacity: 1;
    transform: translateX(8px);
    color: var(--accent-cyan);
}

.footer-statement {
    font-size: 0.9rem;
    opacity: 0.8;
    line-height: 1.8;
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-xl);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    position: relative;
    z-index: 1;
}

.footer-copyright {
    font-size: 0.9rem;
    opacity: 0.9;
    margin-bottom: var(--spacing-xs);
}

.footer-credit {
    font-size: 0.8rem;
    opacity: 0.6;
}

/* ============================================================================
   悬浮按钮
   ============================================================================ */
.floating-buttons {
    position: fixed;
    right: var(--spacing-lg);
    bottom: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    z-index: 100;
}

.floating-btn {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    color: var(--text);
    font-size: 1.25rem;
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-fast);
    opacity: 0;
    transform: translateY(20px);
}

.floating-btn.visible {
    opacity: 1;
    transform: translateY(0);
}

.floating-btn:hover {
    background: var(--gradient-accent);
    color: white;
    transform: scale(1.1) translateY(-4px);
    box-shadow: var(--shadow-glow);
    border-color: transparent;
}

.floating-btn.contact-btn-float {
    background: var(--gradient-accent);
    color: white;
    border: none;
}

/* ============================================================================
   弹窗
   ============================================================================ */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(10, 36, 99, 0.8);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

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

.modal {
    background: var(--surface);
    border-radius: var(--radius-2xl);
    width: 90%;
    max-width: 640px;
    max-height: 90vh;
    overflow-y: auto;
    transform: scale(0.9) translateY(20px);
    transition: transform var(--transition-normal);
    box-shadow: var(--shadow-2xl);
}

.modal-overlay.active .modal {
    transform: scale(1) translateY(0);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-xl);
    border-bottom: 1px solid var(--border);
}

.modal-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text);
}

.modal-close {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.modal-close:hover {
    background: var(--background);
    color: var(--text);
}

.modal-body {
    padding: var(--spacing-xl);
}

/* 成功弹窗 */
.success-modal .modal-body {
    text-align: center;
    padding: var(--spacing-3xl);
}

.success-icon {
    width: 100px;
    height: 100px;
    margin: 0 auto var(--spacing-xl);
    background: var(--gradient-accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 3rem;
    animation: successPop 0.5s ease;
}

@keyframes successPop {
    0% { transform: scale(0); }
    50% { transform: scale(1.2); }
    100% { transform: scale(1); }
}

.success-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text);
    margin-bottom: var(--spacing-sm);
}

.success-text {
    color: var(--text-secondary);
    font-size: 1rem;
}

/* Toast */
.toast-container {
    position: fixed;
    top: var(--spacing-xl);
    right: var(--spacing-xl);
    z-index: 3000;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.toast {
    padding: 16px 24px;
    background: var(--surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    animation: slideInRight 0.3s ease;
    border-left: 4px solid;
}

@keyframes slideInRight {
    from { opacity: 0; transform: translateX(100%); }
    to { opacity: 1; transform: translateX(0); }
}

.toast.success {
    border-color: var(--accent-green);
}

.toast.error {
    border-color: var(--accent-red);
}

.toast.info {
    border-color: var(--secondary);
}

.toast-icon {
    font-size: 1.25rem;
}

.toast.success .toast-icon { color: var(--accent-green); }
.toast.error .toast-icon { color: var(--accent-red); }
.toast.info .toast-icon { color: var(--secondary); }

.toast-message {
    font-size: 0.9rem;
    color: var(--text);
    font-weight: 500;
}

/* ============================================================================
   案例演示弹窗
   ============================================================================ */
.demo-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(10, 36, 99, 0.9);
    backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 3000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.demo-modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.demo-modal {
    background: var(--surface);
    border-radius: var(--radius-2xl);
    width: 90%;
    max-width: 480px;
    max-height: 90vh;
    overflow: hidden;
    transform: scale(0.9) translateY(30px);
    transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    box-shadow: 
        0 25px 80px rgba(0, 0, 0, 0.4),
        0 0 0 1px rgba(255, 255, 255, 0.1);
}

.demo-modal-overlay.active .demo-modal {
    transform: scale(1) translateY(0);
}

.demo-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    background: var(--gradient-primary);
    color: white;
}

.demo-modal-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.125rem;
    font-weight: 600;
    margin: 0;
}

.demo-modal-title i {
    font-size: 1.25rem;
}

.demo-modal-close {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.15);
    border: none;
    border-radius: 50%;
    color: white;
    cursor: pointer;
    transition: all 0.2s ease;
}

.demo-modal-close:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: rotate(90deg);
}

.demo-modal-body {
    padding: 24px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

/* 手机演示框 */
.demo-phone-wrapper {
    perspective: 1000px;
}

.demo-phone-frame {
    width: 280px;
    height: 560px;
    background: linear-gradient(145deg, #2d3748 0%, #1a202c 50%, #171923 100%);
    border-radius: 40px;
    padding: 10px;
    box-shadow: 
        0 30px 60px rgba(0, 0, 0, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.1),
        inset 0 -1px 0 rgba(0, 0, 0, 0.2);
    position: relative;
    transition: transform 0.3s ease;
}

.demo-phone-frame:hover {
    transform: rotateY(-5deg) rotateX(2deg);
}

.demo-phone-notch {
    position: absolute;
    top: 18px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 28px;
    background: #000;
    border-radius: 14px;
    z-index: 10;
}

.demo-phone-notch::before {
    content: '';
    position: absolute;
    top: 50%;
    right: 20px;
    transform: translateY(-50%);
    width: 10px;
    height: 10px;
    background: radial-gradient(circle, #3b82f6 30%, #1e3a5f 100%);
    border-radius: 50%;
}

.demo-phone-screen {
    width: 100%;
    height: 100%;
    background: var(--surface);
    border-radius: 32px;
    overflow: hidden;
    position: relative;
}

.demo-phone-home {
    position: absolute;
    bottom: 8px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 5px;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 3px;
}

/* 演示内容样式 */
.mock-app {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    background: var(--background);
}

.mock-header {
    padding: 50px 16px 12px;
    text-align: center;
    font-size: 14px;
}

.mock-content {
    flex: 1;
    padding: 16px;
    overflow-y: auto;
}

.mock-banner {
    animation: fadeInUp 0.5s ease;
}

.mock-card {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    margin-bottom: 12px;
    cursor: pointer;
    transition: all 0.2s ease;
    animation: fadeInUp 0.5s ease backwards;
}

.mock-card:nth-child(2) { animation-delay: 0.1s; }
.mock-card:nth-child(3) { animation-delay: 0.2s; }
.mock-card:nth-child(4) { animation-delay: 0.3s; }

.mock-card i {
    font-size: 1.25rem;
}

.mock-card span {
    font-weight: 500;
    color: var(--text);
}

.mock-card:hover {
    border-color: var(--secondary);
    transform: translateX(4px);
}

.mock-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    margin-bottom: 16px;
}

.mock-grid-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 20px 12px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.mock-grid-item i {
    font-size: 1.5rem;
}

.mock-grid-item span {
    font-size: 12px;
    color: var(--text-secondary);
}

.mock-grid-item:hover,
.mock-grid-item.active {
    background: linear-gradient(135deg, rgba(62, 146, 204, 0.1), rgba(124, 58, 237, 0.05));
    border-color: var(--secondary);
    transform: scale(1.02);
}

.mock-list-item {
    display: flex;
    align-items: center;
    padding: 12px;
    background: var(--surface);
    border-radius: 12px;
    margin-bottom: 12px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.mock-btn {
    width: 100%;
    padding: 14px;
    background: linear-gradient(135deg, #10b981, #06b6d4);
    color: white;
    text-align: center;
    border-radius: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    margin-top: 12px;
}

.mock-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(16, 185, 129, 0.3);
}

.mock-nav {
    display: flex;
    justify-content: space-around;
    padding: 12px 0;
    background: var(--surface);
    border-top: 1px solid var(--border);
}

.mock-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    color: var(--text-muted);
    font-size: 10px;
    cursor: pointer;
    transition: all 0.2s ease;
    padding: 4px 12px;
    border-radius: 8px;
}

.mock-nav-item i {
    font-size: 1.125rem;
}

.mock-nav-item:hover,
.mock-nav-item.active {
    color: var(--secondary);
}

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

/* 提示信息 */
.demo-notice {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 16px;
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.1), rgba(239, 68, 68, 0.05));
    border: 1px solid rgba(245, 158, 11, 0.3);
    border-radius: 10px;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.demo-notice i {
    color: #f59e0b;
    font-size: 1rem;
}

/* ============================================================================
   滚动动画
   ============================================================================ */
.scroll-animate {
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.scroll-animate.delay-1 { transition-delay: 0.1s; }
.scroll-animate.delay-2 { transition-delay: 0.2s; }
.scroll-animate.delay-3 { transition-delay: 0.3s; }
.scroll-animate.delay-4 { transition-delay: 0.4s; }
.scroll-animate.delay-5 { transition-delay: 0.5s; }

/* ============================================================================
   响应式设计
   ============================================================================ */
@media (max-width: 1280px) {
    .abilities-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 1024px) {
    .navbar-links {
        display: none;
    }
    
    .navbar-cta {
        display: none;
    }
    
    .menu-toggle {
        display: flex;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-graphic {
        display: none;
    }
    
    .hero-subtitle {
        margin: 0 auto var(--spacing-xl);
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .abilities-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .cases-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .section {
        padding: var(--spacing-3xl) 0;
    }
    
    /* 移动端导航栏调整 */
    .navbar {
        padding: 12px 0;
    }
    
    .navbar.scrolled {
        padding: 8px 0;
    }
    
    .navbar-inner {
        padding: 0 16px;
    }
    
    .navbar-links {
        display: none;
    }
    
    .navbar-cta {
        display: none;
    }
    
    .logo-text {
        display: none;
    }
    
    .logo-icon {
        width: 38px;
        height: 38px;
        font-size: 1rem;
        border-radius: 10px;
    }
    
    .search-toggle,
    .theme-toggle {
        width: 36px;
        height: 36px;
        font-size: 0.85rem;
    }
    
    .menu-toggle {
        display: flex;
    }
    
    /* 动态背景在移动端淡化 */
    .global-bg::before {
        opacity: 0.5;
    }
    
    .bg-dot {
        opacity: 0.2;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .filter-tabs {
        overflow-x: auto;
        justify-content: flex-start;
        -webkit-overflow-scrolling: touch;
    }
    
    .demo-tabs {
        flex-wrap: wrap;
    }
    
    .phone-frame {
        width: 300px;
        height: 620px;
    }
    
    .desktop-frame {
        width: 100%;
    }
    
    .cases-grid {
        grid-template-columns: 1fr;
    }
    
    .customize-content {
        grid-template-columns: 1fr;
    }
    
    .contact-card {
        position: static;
    }
    
    .about-content {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-md);
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .abilities-grid {
        grid-template-columns: 1fr;
    }
    
    .phone-frame {
        width: 280px;
        height: 580px;
    }
    
    .form-buttons {
        flex-direction: column;
    }
    
    .guarantee-list {
        grid-template-columns: 1fr;
    }
    
    .about-stats {
        grid-template-columns: 1fr;
    }
    
    .honors-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* 减少动画 */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}

/* ============================================================================
   关于我区 - 全新超高端设计 V2.0
   ============================================================================ */
.about-content-new {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 40px;
    position: relative;
    z-index: 1;
}

/* 主卡片 - 左侧个人信息 */
.about-main-card {
    background: linear-gradient(145deg, #ffffff, #f8fafc);
    border-radius: 24px;
    padding: 0;
    position: relative;
    overflow: hidden;
    box-shadow: 
        0 25px 60px rgba(10, 36, 99, 0.1),
        0 10px 20px rgba(10, 36, 99, 0.06),
        inset 0 1px 0 rgba(255, 255, 255, 0.9);
    border: 1px solid rgba(255, 255, 255, 0.8);
}

/* 卡片背景装饰 */
.about-card-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 140px;
    background: linear-gradient(135deg, #0A2463 0%, #1A3A7C 50%, #3E92CC 100%);
    overflow: hidden;
}

.about-card-pattern {
    position: absolute;
    inset: 0;
    background: 
        repeating-linear-gradient(45deg, transparent, transparent 10px, rgba(255,255,255,0.03) 10px, rgba(255,255,255,0.03) 20px);
    animation: patternMove 20s linear infinite;
}

@keyframes patternMove {
    0% { transform: translateX(0); }
    100% { transform: translateX(40px); }
}

.about-card-glow {
    position: absolute;
    top: -50%;
    right: -30%;
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, rgba(0, 212, 255, 0.3), transparent 70%);
    animation: glowPulse 4s ease-in-out infinite;
}

/* 头像区域 */
.about-avatar-section {
    position: relative;
    z-index: 2;
    padding-top: 80px;
    display: flex;
    justify-content: center;
}

.about-avatar-wrapper {
    position: relative;
    width: 120px;
    height: 120px;
}

.about-avatar-ring {
    position: absolute;
    inset: -8px;
    border-radius: 50%;
    border: 3px solid rgba(255, 255, 255, 0.3);
    animation: ringRotate 8s linear infinite;
}

.about-avatar-ring.ring-2 {
    inset: -16px;
    border: 2px dashed rgba(255, 255, 255, 0.2);
    animation: ringRotate 12s linear infinite reverse;
}

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

.about-avatar-inner {
    width: 100%;
    height: 100%;
    background: linear-gradient(145deg, #ffffff, #f0f4f8);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 
        0 10px 30px rgba(10, 36, 99, 0.2),
        inset 0 -5px 15px rgba(0, 0, 0, 0.05);
    border: 4px solid white;
}

.about-avatar-text {
    font-size: 32px;
    font-weight: 800;
    background: linear-gradient(135deg, #0A2463, #3E92CC);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.about-avatar-status {
    position: absolute;
    bottom: 5px;
    right: 5px;
    width: 28px;
    height: 28px;
    background: linear-gradient(135deg, #10b981, #059669);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 3px solid white;
    box-shadow: 0 4px 10px rgba(16, 185, 129, 0.4);
}

.about-avatar-status i {
    color: white;
    font-size: 12px;
}

/* 信息区域 */
.about-info-section {
    padding: 20px 30px 0;
    text-align: center;
}

.about-name-new {
    font-size: 28px;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 12px;
    letter-spacing: -0.5px;
}

.about-title-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    background: linear-gradient(135deg, rgba(62, 146, 204, 0.1), rgba(124, 58, 237, 0.1));
    border-radius: 25px;
    margin-bottom: 16px;
    border: 1px solid rgba(62, 146, 204, 0.2);
}

.about-title-badge i {
    color: var(--secondary);
}

.about-title-badge span {
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
}

.about-desc-new {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
    max-width: 320px;
    margin: 0 auto;
}

/* 统计数据网格 */
.about-stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    padding: 24px;
    margin-top: 20px;
    background: linear-gradient(180deg, transparent, rgba(62, 146, 204, 0.03));
}

.about-stat-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px;
    background: white;
    border-radius: 16px;
    box-shadow: 0 4px 15px rgba(10, 36, 99, 0.06);
    transition: all 0.3s ease;
    cursor: pointer;
    border: 1px solid rgba(62, 146, 204, 0.1);
}

.about-stat-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 30px rgba(62, 146, 204, 0.15);
    border-color: var(--secondary);
}

.stat-icon-wrapper {
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, rgba(62, 146, 204, 0.1), rgba(124, 58, 237, 0.1));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.stat-icon-wrapper i {
    font-size: 18px;
    color: var(--secondary);
}

.stat-content {
    display: flex;
    flex-direction: column;
}

.stat-value {
    font-size: 22px;
    font-weight: 800;
    color: var(--primary);
    line-height: 1.2;
}

.stat-text {
    font-size: 12px;
    color: var(--text-muted);
}

/* 右侧区域 */
.about-side-section {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

/* 技术栈卡片 */
.skills-card-new {
    background: linear-gradient(145deg, #ffffff, #f8fafc);
    border-radius: 20px;
    padding: 24px;
    box-shadow: 
        0 20px 50px rgba(10, 36, 99, 0.08),
        inset 0 1px 0 rgba(255, 255, 255, 0.9);
    border: 1px solid rgba(255, 255, 255, 0.8);
}

.card-header-new {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 20px;
}

.card-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, #3E92CC, #1A3A7C);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 20px rgba(62, 146, 204, 0.3);
}

.card-icon i {
    font-size: 20px;
    color: white;
}

.card-icon.contact {
    background: linear-gradient(135deg, #10b981, #059669);
    box-shadow: 0 8px 20px rgba(16, 185, 129, 0.3);
}

.card-header-new h4 {
    font-size: 18px;
    font-weight: 700;
    color: var(--primary);
}

.skills-chart-wrapper {
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.skills-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--border);
}

.skill-tag {
    padding: 6px 14px;
    font-size: 12px;
    font-weight: 600;
    border-radius: 20px;
    transition: all 0.2s ease;
    cursor: default;
}

.skill-tag.frontend {
    background: rgba(59, 130, 246, 0.1);
    color: #3b82f6;
    border: 1px solid rgba(59, 130, 246, 0.2);
}

.skill-tag.backend {
    background: rgba(16, 185, 129, 0.1);
    color: #10b981;
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.skill-tag.mobile {
    background: rgba(245, 158, 11, 0.1);
    color: #f59e0b;
    border: 1px solid rgba(245, 158, 11, 0.2);
}

.skill-tag.database {
    background: rgba(139, 92, 246, 0.1);
    color: #8b5cf6;
    border: 1px solid rgba(139, 92, 246, 0.2);
}

/* 联系方式卡片 */
.contact-card-new {
    background: linear-gradient(145deg, #ffffff, #f8fafc);
    border-radius: 20px;
    padding: 24px;
    box-shadow: 
        0 20px 50px rgba(10, 36, 99, 0.08),
        inset 0 1px 0 rgba(255, 255, 255, 0.9);
    border: 1px solid rgba(255, 255, 255, 0.8);
}

.contact-items {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.contact-item-new {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 16px;
    background: linear-gradient(145deg, #f8fafc, #ffffff);
    border-radius: 16px;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 1px solid transparent;
}

.contact-item-new:hover {
    transform: translateX(6px);
    background: white;
    border-color: var(--secondary);
    box-shadow: 0 8px 25px rgba(62, 146, 204, 0.15);
}

.contact-icon {
    width: 50px;
    height: 50px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-icon i {
    font-size: 22px;
    color: white;
}

.contact-icon.wechat {
    background: linear-gradient(135deg, #07c160, #06ae56);
    box-shadow: 0 6px 20px rgba(7, 193, 96, 0.35);
}

.contact-icon.phone {
    background: linear-gradient(135deg, #3b82f6, #1d4ed8);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.35);
}

.contact-info {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.contact-label {
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: 2px;
}

.contact-value {
    font-size: 16px;
    font-weight: 700;
    color: var(--primary);
    letter-spacing: 0.5px;
}

.contact-action {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    background: linear-gradient(135deg, rgba(62, 146, 204, 0.1), rgba(62, 146, 204, 0.05));
    border-radius: 20px;
    font-size: 12px;
    color: var(--secondary);
    font-weight: 600;
    transition: all 0.2s ease;
}

.contact-item-new:hover .contact-action {
    background: var(--secondary);
    color: white;
}

/* 服务保障 */
.service-guarantee {
    display: flex;
    justify-content: space-between;
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--border);
}

.guarantee-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    color: var(--text-muted);
}

.guarantee-item i {
    color: var(--secondary);
    font-size: 14px;
}

/* 复制成功提示 */
.copy-toast {
    position: fixed;
    bottom: 100px;
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    padding: 14px 28px;
    background: linear-gradient(135deg, #10b981, #059669);
    color: white;
    font-size: 14px;
    font-weight: 600;
    border-radius: 30px;
    box-shadow: 0 10px 40px rgba(16, 185, 129, 0.4);
    z-index: 10000;
    opacity: 0;
    transition: all 0.3s ease;
}

.copy-toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

.copy-toast i {
    margin-right: 8px;
}

/* 响应式 */
@media (max-width: 992px) {
    .about-content-new {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .about-stats-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (max-width: 768px) {
    .about-stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .service-guarantee {
        flex-direction: column;
        gap: 12px;
        align-items: flex-start;
    }
}

/* ============================================================================
   Hero 标题动态效果
   ============================================================================ */
.hero-title .typing-text {
    display: inline;
    background: linear-gradient(
        90deg,
        #ffffff,
        #00D4FF,
        #ffffff,
        #7C3AED,
        #ffffff
    );
    background-size: 200% auto;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: textShine 4s linear infinite;
}

@keyframes textShine {
    0% { background-position: 0% center; }
    100% { background-position: 200% center; }
}

.hero-title .cursor {
    display: inline-block;
    color: var(--accent-cyan);
    font-weight: 300;
    animation: cursorBlink 1s step-end infinite;
}

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

/* Hero 标题悬浮光效 */
.hero-title::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 120%;
    height: 150%;
    background: radial-gradient(ellipse, rgba(0, 212, 255, 0.15), transparent 60%);
    transform: translate(-50%, -50%);
    pointer-events: none;
    animation: titleGlow 3s ease-in-out infinite alternate;
}

@keyframes titleGlow {
    0% { opacity: 0.5; transform: translate(-50%, -50%) scale(0.9); }
    100% { opacity: 1; transform: translate(-50%, -50%) scale(1.1); }
}

/* Hero 副标题动态下划线 */
.hero-subtitle {
    position: relative;
}

.hero-subtitle::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    width: 100px;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--accent-cyan), transparent);
    transform: translateX(-50%);
    animation: subtitleLine 2s ease-in-out infinite;
}

@keyframes subtitleLine {
    0%, 100% { width: 60px; opacity: 0.5; }
    50% { width: 120px; opacity: 1; }
}