/* ========================================
   上海墨比斯智能科技有限公司 - Mobix AI
   官方网站样式表
   ======================================== */

/* CSS变量定义 - 浅色模式（默认） */
:root {
    --primary-color: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary-color: #06b6d4;
    --accent-color: #f59e0b;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-light: #94a3b8;
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-dark: #0f172a;
    --bg-gradient-start: #6366f1;
    --bg-gradient-end: #8b5cf6;
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --transition-fast: 150ms ease;
    --transition-normal: 300ms ease;
    --transition-slow: 500ms ease;
}



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

/* 跳转到内容链接 - 可访问性 */
.skip-link {
    position: absolute;
    top: -100%;
    left: 50%;
    transform: translateX(-50%);
    padding: 0.75rem 1.5rem;
    background: var(--primary-color);
    color: #fff;
    font-weight: 600;
    border-radius: 0 0 var(--radius-md) var(--radius-md);
    z-index: 10000;
    transition: top 0.3s ease;
}

.skip-link:focus {
    top: 0;
}

/* 尊重用户减少动画偏好 */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    
    .particle,
    .scroll-indicator,
    .mouse .wheel {
        animation: none !important;
        display: none !important;
    }
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    overflow-x: hidden;
}

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

ul {
    list-style: none;
}

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

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

input, textarea, select {
    font-family: inherit;
    font-size: inherit;
}

/* 容器 */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* ========================================
   导航栏
   ======================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    transition: all var(--transition-normal);
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-icon {
    width: 40px;
    height: 40px;
    color: var(--primary-color);
}

.mobius-path {
    stroke-dasharray: 300;
    stroke-dashoffset: 300;
    animation: drawMobius 2s ease forwards;
}

@keyframes drawMobius {
    to {
        stroke-dashoffset: 0;
    }
}

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

.brand-highlight {
    color: var(--primary-color);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-link {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--text-secondary);
    position: relative;
    padding: 0.5rem 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width var(--transition-normal);
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-color);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 5px;
}

.hamburger span {
    display: block;
    width: 25px;
    height: 2px;
    background: var(--text-primary);
    transition: all var(--transition-normal);
}

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

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

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

/* ========================================
   Hero区域
   ======================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, #0f172a 0%, #1e1b4b 30%, #312e81 60%, #4c1d95 100%);
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.15) 0%, transparent 60%);
    border-radius: 50%;
    animation: pulse-glow 8s ease-in-out infinite;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(6, 182, 212, 0.1) 0%, transparent 60%);
    border-radius: 50%;
    animation: pulse-glow 10s ease-in-out infinite reverse;
}

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

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

.particles {
    position: absolute;
    inset: 0;
}

.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    animation: float 15s infinite;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0) translateX(0);
        opacity: 0;
    }
    10% {
        opacity: 1;
    }
    90% {
        opacity: 1;
    }
    100% {
        transform: translateY(-100vh) translateX(50px);
        opacity: 0;
    }
}

.hero-content {
    position: relative;
    z-index: 1;
    padding-top: 72px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.6rem 1.25rem;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.2), rgba(6, 182, 212, 0.1));
    border: 1px solid rgba(99, 102, 241, 0.4);
    border-radius: 2rem;
    font-size: 0.875rem;
    color: #a5b4fc;
    margin-bottom: 1.5rem;
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.2);
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: var(--secondary-color);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

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

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    font-weight: 800;
    line-height: 1.1;
    color: #fff;
    margin-bottom: 1.5rem;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    letter-spacing: -0.02em;
}

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

.hero-subtitle {
    font-size: 1.125rem;
    color: rgba(255, 255, 255, 0.7);
    max-width: 600px;
    margin-bottom: 2rem;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    margin-bottom: 4rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 2rem;
    font-size: 0.9375rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
}

.btn-primary {
    background: var(--primary-color);
    color: #fff;
    box-shadow: 0 4px 14px 0 rgba(99, 102, 241, 0.39);
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.23);
}

.btn-outline {
    background: transparent;
    color: #fff;
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.5);
}

.btn-full {
    width: auto;
    padding: 0.75rem 1.5rem;
    align-self: center;
    font-size: 0.875rem;
}

.contact-form .btn-full svg {
    width: 18px;
    height: 18px;
}

.hero-expertise {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.expertise-tag {
    display: inline-flex;
    align-items: center;
    padding: 0.5rem 1rem;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 2rem;
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.9);
    transition: all var(--transition-fast);
}

.expertise-tag:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.3);
}

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.75rem;
    animation: bounce 2s infinite;
}

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

.wheel {
    width: 4px;
    height: 8px;
    background: rgba(255, 255, 255, 0.5);
    border-radius: 2px;
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll 2s infinite;
}

@keyframes scroll {
    0% {
        opacity: 1;
        top: 8px;
    }
    100% {
        opacity: 0;
        top: 20px;
    }
}

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

/* ========================================
   通用区块样式
   ======================================== */
section {
    padding: 6rem 0;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 4rem;
}

.section-header.light {
    color: #fff;
}

.section-header.light .section-title {
    color: #fff;
}

.section-header.light .section-desc {
    color: rgba(255, 255, 255, 0.7);
}

.section-tag {
    display: inline-block;
    padding: 0.375rem 1rem;
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary-color);
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: 2rem;
    margin-bottom: 1rem;
}

.section-title {
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

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

/* ========================================
   关于我们
   ======================================== */
.about {
    background: linear-gradient(180deg, #f8fafc 0%, #f1f5f9 100%);
    position: relative;
}

.about::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(99, 102, 241, 0.3), transparent);
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-bottom: 4rem;
}

.about-card {
    background: linear-gradient(145deg, #ffffff 0%, #fafbfc 100%);
    padding: 2.5rem;
    border-radius: var(--radius-xl);
    box-shadow: 
        0 1px 3px rgba(0, 0, 0, 0.05),
        0 10px 30px rgba(0, 0, 0, 0.05);
    transition: all var(--transition-normal);
    border: 1px solid rgba(226, 232, 240, 0.6);
    position: relative;
    overflow: hidden;
}

.about-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-normal);
}

.about-card:hover {
    transform: translateY(-8px);
    box-shadow: 
        0 20px 40px rgba(99, 102, 241, 0.15),
        0 10px 20px rgba(0, 0, 0, 0.08);
    border-color: rgba(99, 102, 241, 0.2);
}

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

.about-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.3);
    transition: all var(--transition-normal);
}

.about-card:hover .about-icon {
    transform: scale(1.1) rotate(5deg);
    box-shadow: 0 12px 35px rgba(99, 102, 241, 0.4);
}

.about-icon svg {
    width: 28px;
    height: 28px;
    color: #fff;
}

.about-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.about-card p {
    color: var(--text-secondary);
    line-height: 1.7;
}

.about-values {
    background: linear-gradient(145deg, #ffffff 0%, #f8fafc 100%);
    padding: 3rem;
    border-radius: var(--radius-xl);
    box-shadow: 
        0 4px 6px rgba(0, 0, 0, 0.03),
        0 15px 35px rgba(0, 0, 0, 0.05);
    border: 1px solid rgba(226, 232, 240, 0.6);
}

.values-title {
    text-align: center;
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 2rem;
    color: var(--text-primary);
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.value-item {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
}

.value-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
    opacity: 0.3;
    line-height: 1;
}

.value-content h4 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.value-content p {
    color: var(--text-secondary);
    font-size: 0.9375rem;
}

/* ========================================
   核心业务
   ======================================== */
.services {
    background: linear-gradient(135deg, #0f172a 0%, #1e1b4b 50%, #312e81 100%);
    position: relative;
    overflow: hidden;
}

.services::before {
    content: '';
    position: absolute;
    top: 20%;
    left: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.1) 0%, transparent 60%);
    border-radius: 50%;
}

.services::after {
    content: '';
    position: absolute;
    bottom: 10%;
    right: -5%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(6, 182, 212, 0.08) 0%, transparent 60%);
    border-radius: 50%;
}

.services .section-title,
.services .section-desc {
    color: #fff;
}

.services .service-card {
    background: linear-gradient(145deg, rgba(255, 255, 255, 0.08) 0%, rgba(255, 255, 255, 0.03) 100%);
    border-color: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
}

.services .service-card h3 {
    color: #fff;
}

.services .service-card > p {
    color: rgba(255, 255, 255, 0.7);
}

.services .service-features li {
    color: rgba(255, 255, 255, 0.7);
}

.services-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 2rem;
}

.service-card {
    background: linear-gradient(145deg, #ffffff 0%, #fafbfc 100%);
    border: 1px solid rgba(226, 232, 240, 0.8);
    border-radius: var(--radius-xl);
    padding: 2.5rem;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
    flex: 0 0 calc(33.333% - 1.5rem);
    min-width: 320px;
    max-width: 400px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.03);
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-normal);
}

.service-card:hover {
    border-color: rgba(99, 102, 241, 0.3);
    box-shadow: 
        0 20px 40px rgba(99, 102, 241, 0.15),
        0 10px 20px rgba(0, 0, 0, 0.08);
    transform: translateY(-8px);
}

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

.service-icon {
    width: 68px;
    height: 68px;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.15) 0%, rgba(6, 182, 212, 0.15) 100%);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    transition: all var(--transition-normal);
}

.service-card:hover .service-icon {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.25) 0%, rgba(6, 182, 212, 0.25) 100%);
    transform: scale(1.1);
}

.service-icon svg {
    width: 32px;
    height: 32px;
    color: var(--primary-color);
}

.service-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.service-card > p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.7;
}

.service-features {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.service-features li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.service-features li::before {
    content: '';
    width: 6px;
    height: 6px;
    background: var(--primary-color);
    border-radius: 50%;
}

/* ========================================
   解决方案
   ======================================== */
.solutions {
    background: linear-gradient(180deg, #f1f5f9 0%, #e2e8f0 100%);
    position: relative;
}

.solutions::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 200px;
    background: linear-gradient(180deg, rgba(99, 102, 241, 0.05) 0%, transparent 100%);
    pointer-events: none;
}

.solutions-wrapper {
    display: flex;
    flex-direction: column;
    gap: 3rem;
}

.solution-item {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.solution-item.reverse {
    direction: rtl;
}

.solution-item.reverse > * {
    direction: ltr;
}

.solution-image {
    position: relative;
}

.solution-placeholder {
    aspect-ratio: 16/10;
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.solution-placeholder svg {
    width: 60%;
    height: 60%;
}

.solution-placeholder.manufacturing {
    background: linear-gradient(135deg, #1e3a5f 0%, #0d2137 50%, #1e1b4b 100%);
    color: #60a5fa;
    box-shadow: 0 20px 40px rgba(30, 58, 95, 0.3);
}

.solution-placeholder.finance {
    background: linear-gradient(135deg, #064e3b 0%, #022c22 50%, #0f172a 100%);
    color: #34d399;
    box-shadow: 0 20px 40px rgba(6, 78, 59, 0.3);
}

.solution-placeholder.healthcare {
    background: linear-gradient(135deg, #7c2d12 0%, #451a03 50%, #1a0f0a 100%);
    color: #fb923c;
    box-shadow: 0 20px 40px rgba(124, 45, 18, 0.3);
}

.solution-placeholder.retail {
    background: linear-gradient(135deg, #581c87 0%, #3b0764 50%, #1e1b4b 100%);
    color: #c084fc;
    box-shadow: 0 20px 40px rgba(88, 28, 135, 0.3);
}

.solution-tag {
    display: inline-block;
    padding: 0.5rem 1.25rem;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: #fff;
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: 2rem;
    margin-bottom: 1rem;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
}

.solution-content h3 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.solution-content > p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.solution-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
}

.solution-features li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9375rem;
    color: var(--text-primary);
}

.solution-features li::before {
    content: '✓';
    width: 20px;
    height: 20px;
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 700;
}

/* ========================================
   服务行业
   ======================================== */
.industries-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    justify-items: center;
}

.industry-card {
    background: linear-gradient(145deg, #ffffff 0%, #fafbfc 100%);
    border: 1px solid rgba(226, 232, 240, 0.8);
    border-radius: var(--radius-xl);
    padding: 2.5rem;
    text-align: center;
    transition: all var(--transition-normal);
    width: 100%;
    max-width: 360px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.03);
}

.industry-card:hover {
    border-color: rgba(99, 102, 241, 0.3);
    box-shadow: 
        0 20px 40px rgba(99, 102, 241, 0.12),
        0 10px 20px rgba(0, 0, 0, 0.06);
    transform: translateY(-8px);
}

.industry-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    box-shadow: 0 10px 30px rgba(99, 102, 241, 0.3);
    transition: all var(--transition-normal);
}

.industry-card:hover .industry-icon {
    transform: scale(1.15) rotate(10deg);
    box-shadow: 0 15px 40px rgba(99, 102, 241, 0.4);
}

.industry-icon svg {
    width: 32px;
    height: 32px;
    color: #fff;
}

.industry-card h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.industry-card p {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* ========================================
   技术优势
   ======================================== */
.advantages {
    background: linear-gradient(135deg, #0f172a 0%, #1e1b4b 40%, #312e81 100%);
    color: #fff;
    position: relative;
    overflow: hidden;
}

.advantages::before {
    content: '';
    position: absolute;
    top: -20%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.1) 0%, transparent 60%);
    border-radius: 50%;
}

.advantages::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -5%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(6, 182, 212, 0.08) 0%, transparent 60%);
    border-radius: 50%;
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.advantage-item {
    background: linear-gradient(145deg, rgba(255, 255, 255, 0.08) 0%, rgba(255, 255, 255, 0.03) 100%);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-xl);
    padding: 2rem;
    transition: all var(--transition-normal);
    backdrop-filter: blur(10px);
    position: relative;
    overflow: hidden;
}

.advantage-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-light), var(--secondary-color));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-normal);
}

.advantage-item:hover {
    background: linear-gradient(145deg, rgba(255, 255, 255, 0.12) 0%, rgba(255, 255, 255, 0.05) 100%);
    border-color: rgba(255, 255, 255, 0.25);
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

.advantage-item:hover::before {
    transform: scaleX(1);
}

.advantage-number {
    font-size: 3.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary-light), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    opacity: 0.6;
    line-height: 1;
    margin-bottom: 1rem;
    transition: all var(--transition-normal);
}

.advantage-item:hover .advantage-number {
    opacity: 1;
    transform: scale(1.1);
}

.advantage-item h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.advantage-item p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9375rem;
    line-height: 1.7;
}

/* ========================================
   联系我们
   ======================================== */
.contact {
    background: linear-gradient(135deg, #f0f4ff 0%, #e8f4f8 50%, #f5f0ff 100%);
    position: relative;
    overflow: hidden;
}

.contact::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.08) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.contact::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(6, 182, 212, 0.06) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 0;
    background: rgba(255, 255, 255, 0.95);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: 
        0 25px 50px -12px rgba(0, 0, 0, 0.15),
        0 0 0 1px rgba(255, 255, 255, 0.5) inset;
    backdrop-filter: blur(20px);
    position: relative;
    z-index: 1;
}

.contact-info {
    padding: 3rem 2.5rem;
    background: linear-gradient(145deg, #6366f1 0%, #4f46e5 50%, #7c3aed 100%);
    color: #fff;
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
    text-align: center;
}

.contact-info::before {
    content: '';
    position: absolute;
    top: -100px;
    right: -100px;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    border-radius: 50%;
}

.contact-info::after {
    content: '';
    position: absolute;
    bottom: -50px;
    left: -50px;
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, rgba(6, 182, 212, 0.3) 0%, transparent 70%);
    border-radius: 50%;
}

.contact-info .section-tag {
    background: rgba(255, 255, 255, 0.15);
    color: #fff;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: 0.5rem 1.5rem;
    font-weight: 500;
    letter-spacing: 0.5px;
    display: inline-flex;
    margin: 0 auto 1rem;
}

.contact-info .section-title {
    color: #fff;
    font-size: 2.25rem;
    font-weight: 700;
    margin: 1rem 0 1.5rem;
    line-height: 1.2;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.contact-desc {
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 2.5rem;
    line-height: 1.8;
    font-size: 1.05rem;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-top: auto;
    align-items: center;
}

.contact-item {
    display: flex;
    gap: 1rem;
    align-items: center;
    padding: 1rem 1.5rem;
    background: rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all var(--transition-normal);
    justify-content: center;
    width: 100%;
    max-width: 280px;
}

.contact-item:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: scale(1.02);
}

.contact-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.2), rgba(255, 255, 255, 0.05));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.contact-icon svg {
    width: 24px;
    height: 24px;
    color: #fff;
}

.contact-text h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.contact-text p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9375rem;
}

.contact-form-wrapper,
.contact-qr-wrapper {
    padding: 3rem 4rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

/* 企业微信二维码卡片样式 */
.contact-qr-card {
    background: linear-gradient(145deg, #ffffff 0%, #f8fafc 100%);
    border-radius: var(--radius-xl);
    border: 1px solid rgba(226, 232, 240, 0.8);
    padding: 3rem 4rem;
    text-align: center;
    transition: all var(--transition-normal);
    box-shadow: 
        0 4px 6px -1px rgba(0, 0, 0, 0.05),
        0 10px 20px -5px rgba(0, 0, 0, 0.05);
    position: relative;
    overflow: hidden;
    width: 100%;
    max-width: 420px;
}

.contact-qr-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color), var(--accent-color));
}

.contact-qr-card:hover {
    box-shadow: 
        0 20px 40px -10px rgba(99, 102, 241, 0.2),
        0 10px 20px -5px rgba(0, 0, 0, 0.1);
    transform: translateY(-8px);
    border-color: rgba(99, 102, 241, 0.3);
}

.qr-header {
    margin-bottom: 1.5rem;
    position: relative;
}

.qr-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 1rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    box-shadow: 0 8px 20px rgba(99, 102, 241, 0.3);
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-5px); }
}

.qr-icon svg {
    width: 24px;
    height: 24px;
}

.qr-header h3 {
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.35rem;
}

.qr-header p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.qr-code-container {
    margin: 1.5rem 0;
    position: relative;
}

.qr-code-container::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 280px;
    height: 280px;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(6, 182, 212, 0.1));
    border-radius: 50%;
    z-index: 0;
}

.qr-placeholder {
    width: 200px;
    height: 200px;
    margin: 0 auto;
    background: var(--bg-secondary);
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-md);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    color: var(--text-light);
}

.qr-icon-large {
    width: 80px;
    height: 80px;
    opacity: 0.5;
}

.qr-placeholder-text {
    font-size: 0.875rem;
    font-weight: 500;
}

.qr-placeholder-hint {
    font-size: 0.75rem;
    opacity: 0.7;
}

.qr-code-image {
    width: 240px;
    height: 240px;
    margin: 0 auto;
    border-radius: var(--radius-lg);
    box-shadow: 
        0 15px 40px rgba(0, 0, 0, 0.15),
        0 0 0 5px rgba(255, 255, 255, 0.9),
        0 0 0 6px rgba(99, 102, 241, 0.2);
    position: relative;
    z-index: 1;
    transition: all var(--transition-normal);
}

.qr-code-image:hover {
    transform: scale(1.05);
    box-shadow: 
        0 20px 50px rgba(0, 0, 0, 0.18),
        0 0 0 5px rgba(255, 255, 255, 0.95),
        0 0 0 6px rgba(99, 102, 241, 0.3);
}

.qr-footer {
    margin-top: 2rem;
}

.qr-benefits {
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
    margin-bottom: 1.25rem;
}

.benefit-item {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.benefit-item svg {
    width: 18px;
    height: 18px;
    color: #10b981;
    background: rgba(16, 185, 129, 0.1);
    padding: 2px;
    border-radius: 50%;
}

.qr-tip {
    font-size: 0.9rem;
    color: var(--text-secondary);
    padding-top: 1.25rem;
    border-top: 1px solid var(--border-color);
    font-weight: 500;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-primary);
}

.form-group input,
.form-group textarea,
.form-group select {
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-primary);
    color: var(--text-primary);
    transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-light);
}

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

/* ========================================
   页脚
   ======================================== */
.footer {
    background: var(--bg-dark);
    color: #fff;
    padding: 4rem 0 2rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-brand .logo {
    margin-bottom: 1.5rem;
}

.footer-brand .brand-text {
    color: #fff;
}

.footer-desc {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9375rem;
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.footer-social {
    display: none;
    gap: 1rem;
}

.social-link {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.social-link:hover {
    background: var(--primary-color);
    transform: translateY(-3px);
}

.social-link svg {
    width: 20px;
    height: 20px;
}

.footer-links h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: #fff;
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.footer-links a,
.footer-links li {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9375rem;
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 2rem;
    text-align: center;
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.875rem;
}

.footer-bottom p:first-child {
    margin-bottom: 0.5rem;
}

/* ========================================
   响应式设计
   ======================================== */
@media (max-width: 1024px) {
    .industries-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .industry-card {
        max-width: 100%;
    }
    
    .service-card {
        flex: 0 0 calc(50% - 1rem);
        min-width: 280px;
    }
    
    .advantages-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 900px) {
    .industries-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: var(--bg-primary);
        flex-direction: column;
        padding: 2rem;
        gap: 1rem;
        border-bottom: 1px solid var(--border-color);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-normal);
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .hamburger {
        display: flex;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 1.5rem;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
    }
    
    .values-grid {
        grid-template-columns: 1fr;
    }
    
    .service-card {
        flex: 1 1 100%;
        min-width: auto;
    }
    
    .solution-item {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .solution-item.reverse {
        direction: ltr;
    }
    
    .industries-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .advantages-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-wrapper {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-social {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .hero-buttons {
        flex-direction: column;
    }
    
    .industries-grid {
        grid-template-columns: 1fr;
    }
    
    section {
        padding: 4rem 0;
    }
}

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

.fade-in-up {
    animation: fadeInUp 0.6s ease forwards;
}

/* 滚动显示动画 */
[data-aos] {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-aos].aos-animate {
    opacity: 1;
    transform: translateY(0);
}