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

:root {
    --primary-color: #2563eb;
    --primary-dark: #1e40af;
    --primary-light: #3b82f6;
    --secondary-color: #0ea5e9;
    --accent-color: #06b6d4;
    --text-dark: #1f2937;
    --text-gray: #6b7280;
    --text-light: #9ca3af;
    --bg-white: #ffffff;
    --bg-light: #f9fafb;
    --bg-lighter: #f3f4f6;
    --border-color: #e5e7eb;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 20px rgba(0, 0, 0, 0.15);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.2);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background: var(--bg-white);
}

/* 导航栏样式 */
.nav {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 50;
    transition: all 0.3s ease;
}

.nav.scrolled {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.nav-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 64px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo-img {
    height: 50px;
    width: auto;
    object-fit: contain;
}

.logo-text {
    font-size: 1.25rem;
    font-weight: bold;
    color: #111;
}

.nav-menu {
    display: flex;
    gap: 2rem;
    list-style: none;
}

.nav-link {
    color: var(--text-dark);
    text-decoration: none;
    padding: 0.5rem 1rem;
    font-size: 0.9375rem;
    font-weight: 500;
    transition: all 0.3s ease;
    border-radius: 0.5rem;
    position: relative;
}

.nav-link:hover {
    color: var(--primary-color);
    background: rgba(59, 130, 246, 0.05);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%) scaleX(0);
    width: 80%;
    height: 2px;
    background: var(--primary-color);
    transition: transform 0.3s ease;
}

.nav-link:hover::after {
    transform: translateX(-50%) scaleX(1);
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: #374151;
    cursor: pointer;
}

/* 英雄区域 */
.hero {
    position: relative;
    width: 100%;
    height: 100vh;
    overflow: hidden;
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-slider {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.hero-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: 60%;
    background-position: center;
    background-repeat: no-repeat;
    opacity: 0;
    transition: opacity 1.5s ease-in-out;
}

.hero-slide-1 {
    background-size: 45%;
}

.hero-slide-2 {
    background-size: 60%;
}

.hero-slide.active {
    opacity: 1;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.3);
    z-index: 1;
}

.slider-dots {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 12px;
    z-index: 3;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: all 0.3s ease;
}

.dot:hover {
    background: rgba(255, 255, 255, 0.8);
}

.dot.active {
    background: white;
    width: 32px;
    border-radius: 6px;
}

.slider-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.2);
    border: 2px solid rgba(255, 255, 255, 0.3);
    color: white;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    transition: all 0.3s ease;
    z-index: 3;
    backdrop-filter: blur(10px);
}

.slider-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-50%) scale(1.1);
}

.slider-btn:active {
    transform: translateY(-50%) scale(0.95);
}

.slider-btn-prev {
    left: 30px;
}

.slider-btn-next {
    right: 30px;
}

.hero::before {
    display: none;
}

.hero::after {
    content: '';
    position: absolute;
    width: 600px;
    height: 600px;
    background: rgba(255, 255, 255, 0.01);
    border-radius: 50%;
    bottom: -300px;
    left: -200px;
    animation: float 20s ease-in-out infinite reverse;
}

.hero-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1rem;
    position: relative;
    z-index: 2;
    text-align: center;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
    position: relative;
    z-index: 1;
}

.hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    color: rgba(255, 255, 255, 0.95);
    font-weight: 500;
    position: relative;
    z-index: 1;
}

.hero-desc {
    font-size: 1.125rem;
    margin-bottom: 3rem;
    color: rgba(255, 255, 255, 0.9);
    max-width: 768px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.8;
    position: relative;
    z-index: 1;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    position: relative;
    z-index: 1;
}

.btn-primary {
    background: white;
    color: #2563eb;
    padding: 1rem 2.5rem;
    border-radius: 50px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
    box-shadow: 0 4px 20px rgba(255, 255, 255, 0.3);
    font-size: 1rem;
    position: relative;
    overflow: hidden;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    transition: left 0.5s ease;
}

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

.btn-primary::after {
    content: '→';
    position: absolute;
    right: 1.5rem;
    opacity: 0;
    transform: translateX(-10px);
    transition: all 0.3s ease;
}

.btn-primary:hover::after {
    opacity: 1;
    transform: translateX(0);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(255, 255, 255, 0.4);
    padding-right: 3rem;
}

.btn-primary span {
    position: relative;
    z-index: 1;
    transition: transform 0.3s ease;
}

.btn-primary:hover span {
    transform: translateX(-5px);
}

.btn-secondary {
    background: transparent;
    color: white;
    padding: 1rem 2.5rem;
    border-radius: 50px;
    font-weight: 600;
    border: 2px solid white;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
    font-size: 1rem;
    position: relative;
    overflow: hidden;
}

.btn-secondary::before {
    content: '';
    position: absolute;
    inset: 0;
    background: white;
    transform: scale(0);
    border-radius: 50px;
    transition: transform 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.btn-secondary:hover::before {
    transform: scale(1);
}

.btn-secondary:hover {
    border-color: white;
    transform: translateY(-3px);
    color: #2563eb;
    box-shadow: 0 8px 30px rgba(255, 255, 255, 0.3);
}

.btn-secondary span {
    position: relative;
    z-index: 1;
}

/* AI服务板块 */
.ai-services {
    padding: 100px 1rem;
    background: white;
    position: relative;
}

.ai-services .features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2.5rem;
}

.ai-services .feature-item {
    background: #f8fafc;
    border-radius: 1.5rem;
    padding: 3rem 2rem;
    text-align: center;
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
    border: 1px solid #e2e8f0;
    position: relative;
    overflow: hidden;
}

.ai-services .feature-item::before {
    content: '';
    position: absolute;
    inset: 0;
    background: white;
    opacity: 0;
    transition: opacity 0.4s ease;
}

.ai-services .feature-item::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--primary-color);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 2;
}

.ai-services .feature-item:hover {
    transform: translateY(-12px);
    box-shadow: 0 20px 50px rgba(37, 99, 235, 0.15);
    border-color: rgba(37, 99, 235, 0.3);
}

.ai-services .feature-item:hover::before {
    opacity: 1;
}

.ai-services .feature-item:hover::after {
    transform: scaleX(1);
}

.ai-services .feature-icon {
    width: 90px;
    height: 90px;
    background: transparent;
    border-radius: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 2rem;
    font-size: 4rem;
    color: var(--primary-color);
    box-shadow: none;
    transition: all 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    position: relative;
}

.ai-services .feature-icon::before {
    display: none;
}

.ai-services .feature-item:hover .feature-icon {
    transform: scale(1.2);
    box-shadow: none;
    color: var(--primary-dark);
}

.ai-services .feature-item:hover .feature-icon::before {
    opacity: 0;
}

.ai-services .feature-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 0.75rem;
    letter-spacing: -0.01em;
    position: relative;
    z-index: 1;
}

.ai-services .feature-subtitle {
    font-size: 1rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 1.25rem;
    position: relative;
    z-index: 1;
}

.ai-services .feature-desc {
    color: #6b7280;
    line-height: 1.7;
    font-size: 0.9375rem;
    position: relative;
    z-index: 1;
}

/* AI品牌介绍板块 */
.ai-brand {
    padding: 100px 1rem;
    background: #f8fafc;
    position: relative;
}

.brand-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.brand-card {
    background: white;
    border-radius: 1.5rem;
    padding: 2.5rem;
    text-align: center;
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
    border: 1px solid #e2e8f0;
    position: relative;
    overflow: hidden;
}

.brand-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--primary-color);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 2;
}

.brand-card::after {
    content: '';
    position: absolute;
    inset: 0;
    background: #f8fafc;
    opacity: 0;
    transition: opacity 0.4s ease;
}

.brand-card:hover {
    transform: translateY(-12px);
    box-shadow: 0 20px 50px rgba(37, 99, 235, 0.15);
    border-color: rgba(37, 99, 235, 0.3);
}

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

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

.brand-icon {
    width: 80px;
    height: 80px;
    background: var(--primary-color);
    border-radius: 1.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    font-size: 2.25rem;
    color: white;
    box-shadow: 0 4px 16px rgba(59, 130, 246, 0.25);
    transition: all 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    position: relative;
}

.brand-icon::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 1.25rem;
    background: white;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.brand-card:hover .brand-icon {
    transform: scale(1.2);
    box-shadow: 0 8px 24px rgba(59, 130, 246, 0.35);
}

.brand-card:hover .brand-icon::before {
    opacity: 0;
}

.brand-title {
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 1rem;
    letter-spacing: -0.01em;
    position: relative;
    z-index: 1;
}

.brand-desc {
    color: #6b7280;
    line-height: 1.6;
    position: relative;
    z-index: 1;
}

.ai-features {
    background: white;
    border-radius: 1.5rem;
    padding: 4rem 2rem;
    text-align: center;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
    border: 1px solid #e2e8f0;
    transition: all 0.4s ease;
}

.ai-features:hover {
    box-shadow: 0 8px 24px rgba(37, 99, 235, 0.1);
    transform: translateY(-5px);
}

.features-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 2.5rem;
    letter-spacing: -0.01em;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.feature-item {
    text-align: center;
    padding: 1.5rem;
    border-radius: 1rem;
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.feature-item::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 1rem;
    background: white;
    opacity: 0;
    transform: scale(0.9);
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
}

.feature-item::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--primary-color);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 2;
}

.feature-item:hover::before {
    opacity: 1;
    transform: scale(1);
}

.feature-item:hover::after {
    transform: scaleX(1);
}

.feature-item:hover {
    transform: translateY(-8px);
}

.feature-item>* {
    position: relative;
    z-index: 1;
}

.feature-item i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
    display: inline-block;
    transition: all 0.6s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.feature-item:hover i {
    transform: scale(1.2);
}

.feature-item h4 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
    letter-spacing: -0.01em;
}

.feature-item p {
    color: #6b7280;
    font-size: 0.875rem;
}

/* 新闻板块 */
.news {
    padding: 100px 1rem;
    background: white;
}

.news-content {
    background: #f8fafc;
    border-radius: 1.5rem;
    padding: 4rem 2rem;
    text-align: center;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
    border: 1px solid #e2e8f0;
    min-height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.5s ease;
    position: relative;
    overflow: hidden;
}

.news-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(37, 99, 235, 0.02), transparent);
    transition: left 0.8s ease;
}

.news-content:hover::before {
    left: 100%;
}

.news-content:hover {
    box-shadow: 0 8px 24px rgba(37, 99, 235, 0.1);
    transform: translateY(-8px);
    background: white;
}

.news-placeholder {
    color: var(--text-gray);
    font-size: 1.125rem;
}

/* 工作机会板块 */
.careers {
    padding: 120px 1rem;
    background-image: url('../images/careers-bg.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-attachment: scroll;
    position: relative;
    min-height: 500px;
    display: flex;
    align-items: center;
}

.careers::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.2);
    z-index: 0;
}

.careers .section-container {
    position: relative;
    z-index: 1;
    width: 100%;
}

.careers .section-header {
    margin-bottom: 0;
}

.careers .section-title {
    color: white;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.careers .section-desc {
    color: rgba(255, 255, 255, 0.95);
    text-shadow: 0 1px 4px rgba(0, 0, 0, 0.3);
}

.careers-content {
    display: none;
}

.careers-slogan {
    font-size: 1.75rem;
    color: white;
    font-weight: 700;
    text-align: center;
    letter-spacing: -0.01em;
    line-height: 1.6;
    margin-top: 1.5rem;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
}

@media (max-width: 768px) {
    .careers {
        min-height: 400px;
        padding: 80px 1rem;
    }

    .careers-slogan {
        font-size: 1.375rem;
    }
}

/* 服务板块 */
.services {
    padding: 100px 1rem;
    background: white;
}

.section-container {
    max-width: 1280px;
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
    padding-bottom: 1rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 1rem;
    letter-spacing: -0.01em;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: var(--primary-color);
    border-radius: 2px;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
        transform: translateX(-50%) scaleX(1);
    }

    50% {
        opacity: 0.7;
        transform: translateX(-50%) scaleX(1.2);
    }
}

.section-desc {
    font-size: 1.125rem;
    color: var(--text-gray);
    max-width: 672px;
    margin: 0 auto;
    line-height: 1.7;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.service-card {
    background: #f8fafc;
    border-radius: 1.5rem;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
    padding: 2.5rem;
    text-align: center;
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid #e2e8f0;
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--primary-color);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.service-card::after {
    content: '';
    position: absolute;
    inset: 0;
    background: white;
    opacity: 0;
    transition: opacity 0.5s ease;
}

.service-card:hover {
    transform: translateY(-12px);
    box-shadow: 0 20px 50px rgba(37, 99, 235, 0.15);
    border-color: rgba(37, 99, 235, 0.3);
}

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

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

.service-icon {
    width: 70px;
    height: 70px;
    background: #f0f9ff;
    border-radius: 1.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    font-size: 1.875rem;
    color: var(--primary-color);
    transition: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    position: relative;
}

.service-icon::after {
    content: '';
    position: absolute;
    inset: -2px;
    border-radius: 1.25rem;
    background: var(--primary-color);
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: -1;
}

.service-title {
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 1rem;
    letter-spacing: -0.01em;
}

.service-desc {
    color: var(--text-gray);
    margin-bottom: 1.5rem;
    line-height: 1.7;
}

.service-features {
    list-style: none;
    text-align: left;
}

.service-features li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: #6b7280;
    margin-bottom: 0.5rem;
}

.check-icon {
    color: #10b981;
}

/* 关于我们 */
.about {
    padding: 100px 1rem;
    background: #f8fafc;
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
    align-items: center;
}

@media (min-width: 1024px) {
    .about-grid {
        grid-template-columns: 1fr 1fr;
    }
}

.about-content h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 1.5rem;
    letter-spacing: -0.01em;
}

.about-text {
    font-size: 1.125rem;
    color: #6b7280;
    margin-bottom: 1.5rem;
}

.stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-top: 2rem;
}

.stat-item {
    text-align: center;
    padding: 1.5rem;
    background: white;
    border-radius: 1rem;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
    transition: all 0.6s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    position: relative;
    overflow: hidden;
    border: 1px solid #e2e8f0;
}

.stat-item::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--primary-color);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.stat-item:hover {
    transform: translateY(-10px) scale(1.05);
    box-shadow: 0 16px 36px rgba(37, 99, 235, 0.2);
    border-color: rgba(37, 99, 235, 0.3);
}

.stat-item:hover::before {
    opacity: 0.03;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    transition: all 0.3s ease;
}

.stat-item:hover .stat-number {
    transform: scale(1.15);
    color: var(--primary-dark);
}

.stat-label {
    color: #6b7280;
}

.about-visual {
    background: white;
    border-radius: 1.5rem;
    padding: 0;
    text-align: center;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
    border: 1px solid #e2e8f0;
    transition: all 0.5s ease;
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.about-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    border-radius: 1.5rem;
}

.about-visual::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(37, 99, 235, 0.03) 0%, transparent 70%);
    opacity: 0;
    transition: opacity 0.5s ease;
}

.about-visual:hover {
    box-shadow: 0 12px 32px rgba(37, 99, 235, 0.12);
    transform: translateY(-8px);
}

.about-visual:hover::before {
    opacity: 1;
    animation: rotate 10s linear infinite;
}

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

    to {
        transform: rotate(360deg);
    }
}

.about-visual i {
    font-size: 5rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
    display: inline-block;
    position: relative;
    z-index: 1;
}

.visual-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
    letter-spacing: -0.01em;
}

.visual-desc {
    color: #6b7280;
}

/* 联系我们 */
.contact {
    padding: 100px 1rem;
    background: white;
    color: var(--text-dark);
}

.contact-info {
    max-width: 1280px;
    margin: 0 auto;
}

.info-list {
    list-style: none;
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.info-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem 2rem;
    background: #f8fafc;
    border-radius: 1rem;
    transition: all 0.4s ease;
    border: 1px solid #e2e8f0;
    flex: 1;
    min-width: 250px;
}

.info-item:hover {
    background: white;
    box-shadow: 0 8px 24px rgba(37, 99, 235, 0.15);
    transform: translateY(-5px);
    border-color: rgba(37, 99, 235, 0.3);
}

.info-icon {
    color: var(--primary-color);
    font-size: 1.5rem;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #dbeafe;
    border-radius: 0.75rem;
    flex-shrink: 0;
    transition: all 0.3s ease;
}

.info-item:hover .info-icon {
    transform: scale(1.1) rotate(5deg);
    background: #bfdbfe;
}

@media (max-width: 768px) {
    .info-list {
        flex-direction: column;
        gap: 1rem;
    }

    .info-item {
        min-width: auto;
        height: 400px;
    }

}

/* 页脚 */
.footer {
    background: #1f2937;
    color: white;
    padding: 60px 1rem 0;
    position: relative;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--primary-color);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    max-width: 1280px;
    margin: 0 auto 2rem;
}

.footer-brand {
    grid-column: span 2;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.footer-logo i {
    font-size: 1.5rem;
    color: #3b82f6;
}

.footer-logo span {
    font-size: 1.25rem;
    font-weight: bold;
    color: white;
}

.footer-desc {
    color: #9ca3af;
    margin-bottom: 1rem;
    max-width: 400px;
    line-height: 2;
}


.footer-section h4 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: white;
}

.footer-links {
    list-style: none;
    display: flex;
    gap: 2rem;
}

.footer-links-column {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.footer-links-column li {
    margin-bottom: 0.5rem;
}

.footer-links a {
    color: #9ca3af;
    text-decoration: none;
    transition: color 0.3s;
}

.footer-links a:hover {
    color: #3b82f6;
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-links a {
    color: #9ca3af;
    font-size: 1.25rem;
    transition: color 0.3s;
}

.social-links a:hover {
    color: #3b82f6;
}

.footer-bottom {
    border-top: 1px solid #374151;
    padding-top: 2rem;
    padding-bottom: 2rem;
    text-align: center;
    color: #9ca3af;
    max-width: 1280px;
    margin: 2rem auto 0;
}

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

.beian-info {
    margin-top: 1rem;
    margin-bottom: 0;
}

.beian-info a {
    color: #9ca3af;
    text-decoration: none;
    transition: color 0.3s;
}

.beian-info a:hover {
    color: #3b82f6;
}

.beian-info .separator {
    margin: 0 0.5rem;
    color: #6b7280;
}

/* 分隔线 */
.divider {
    height: 1px;
    background: #374151;
    margin: 0;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }

    .mobile-menu-btn {
        display: block;
    }

    .hero {
        height: 100vh;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1.25rem;
    }

    .hero-desc {
        font-size: 1rem;
    }

    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }

    .hero-buttons a {
        width: 100%;
    }

    .slider-btn {
        width: 40px;
        height: 40px;
        font-size: 14px;
    }

    .slider-btn-prev {
        left: 15px;
    }

    .slider-btn-next {
        right: 15px;
    }

    .section-title {
        font-size: 2rem;
    }

    .section-title::after {
        width: 40px;
        height: 3px;
    }

    .hero-title {
        font-size: 2.25rem;
    }

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

    .services,
    .ai-brand,
    .ai-services,
    .about,
    .contact,
    .news,
    .careers {
        padding: 60px 1rem;
    }

    .ai-services .features-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .ai-services .feature-icon {
        width: 80px;
        height: 80px;
        font-size: 3.5rem;
    }

    .ai-services .feature-title {
        font-size: 1.25rem;
    }

    .brand-icon {
        width: 70px;
        height: 70px;
        font-size: 2rem;
    }

    .service-icon {
        width: 70px;
        height: 70px;
        font-size: 1.75rem;
    }

    .careers-slogan {
        font-size: 1.25rem;
    }

    .stat-number {
        font-size: 2rem;
    }

    .btn-primary,
    .btn-secondary {
        padding: 0.875rem 2rem;
        font-size: 0.9375rem;
    }

    .footer-brand {
        grid-column: span 1;
    }

    .footer-links {
        flex-direction: column;
        gap: 0;
    }

    .footer-links-column {
        margin-bottom: 1rem;
    }
}

.mobile-menu {
    display: none;
    background: white;
    border-top: 1px solid var(--border-color);
    padding: 1rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.mobile-menu.active {
    display: block;
    animation: slideDown 0.3s ease;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.mobile-menu a {
    display: block;
    padding: 1rem 1.25rem;
    color: var(--text-dark);
    text-decoration: none;
    border-radius: 0.5rem;
    transition: all 0.3s ease;
    font-weight: 500;
}

.mobile-menu a:hover {
    background: rgba(59, 130, 246, 0.05);
    color: var(--primary-color);
    transform: translateX(5px);
}

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

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }

    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-10px);
    }
}

/* 应用动画到各个元素 */
.hero-title {
    animation: fadeInUp 1s ease-out;
}

.hero-subtitle {
    animation: fadeInUp 1s ease-out 0.2s backwards;
}

.hero-desc {
    animation: fadeInUp 1s ease-out 0.4s backwards;
}

.hero-buttons {
    animation: fadeInUp 1s ease-out 0.6s backwards;
}

.service-card {
    animation: fadeInUp 0.8s ease-out backwards;
}

.service-card:nth-child(1) {
    animation-delay: 0.1s;
}

.service-card:nth-child(2) {
    animation-delay: 0.2s;
}

.service-card:nth-child(3) {
    animation-delay: 0.3s;
}

.service-card:nth-child(4) {
    animation-delay: 0.4s;
}

.service-card:nth-child(5) {
    animation-delay: 0.5s;
}

.service-card:nth-child(6) {
    animation-delay: 0.6s;
}

.service-icon {
    transition: transform 0.3s ease;
}

.service-card:hover .service-icon {
    transform: scale(1.15);
}

.service-card:hover .service-icon::after {
    opacity: 0.1;
}

.about-content {
    animation: slideInLeft 1s ease-out;
}

.about-visual {
    animation: slideInRight 1s ease-out;
}

.about-visual i {
    animation: float 3s ease-in-out infinite;
}

.stat-number {
    animation: scaleIn 0.8s ease-out;
}

.contact-info {
    animation: slideInLeft 1s ease-out;
}

.form-input,
.form-textarea {
    transition: all 0.3s ease;
}

.form-input:focus,
.form-textarea:focus {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.2);
}

.btn-submit {
    transition: all 0.3s ease;
}

.btn-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

.footer-logo img {
    transition: transform 0.3s ease;
}

.footer-logo:hover img {
    transform: scale(1.05);
}

.nav {
    animation: fadeIn 0.5s ease-out;
}

.logo-img {
    transition: transform 0.3s ease;
}

.logo:hover .logo-img {
    transform: scale(1.05);
}

/* 平滑滚动 */
html {
    scroll-behavior: smooth;
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 10px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-dark);
}

/* 选中文本样式 */
::selection {
    background: var(--primary-color);
    color: white;
}

::-moz-selection {
    background: var(--primary-color);
    color: white;
}

/* 增强动画效果 */
@keyframes bounce {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-10px);
    }
}

.ai-services .feature-item {
    animation: fadeInUp 0.8s cubic-bezier(0.4, 0, 0.2, 1) backwards;
}

.ai-services .feature-item:nth-child(1) {
    animation-delay: 0.1s;
}

.ai-services .feature-item:nth-child(2) {
    animation-delay: 0.2s;
}

.ai-services .feature-item:nth-child(3) {
    animation-delay: 0.3s;
}

.brand-card {
    animation: fadeInUp 0.8s cubic-bezier(0.4, 0, 0.2, 1) backwards;
}

.brand-card:nth-child(1) {
    animation-delay: 0.1s;
}

.brand-card:nth-child(2) {
    animation-delay: 0.2s;
}

.brand-card:nth-child(3) {
    animation-delay: 0.3s;
}

.feature-item {
    animation: scaleIn 0.6s cubic-bezier(0.68, -0.55, 0.265, 1.55) backwards;
}

.feature-item:nth-child(1) {
    animation-delay: 0.1s;
}

.feature-item:nth-child(2) {
    animation-delay: 0.2s;
}

.feature-item:nth-child(3) {
    animation-delay: 0.3s;
}

.news-content {
    animation: fadeInUp 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.careers-content {
    animation: fadeInUp 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.logo:hover .logo-img {
    transform: scale(1.1) rotate(-5deg);
}

.footer-logo:hover img {
    transform: scale(1.1) rotate(5deg);
}

/* 更新已有动画的缓动函数 */
.hero-title {
    animation: fadeInUp 1s cubic-bezier(0.4, 0, 0.2, 1);
}

.hero-subtitle {
    animation: fadeInUp 1s cubic-bezier(0.4, 0, 0.2, 1) 0.2s backwards;
}

.hero-desc {
    animation: fadeInUp 1s cubic-bezier(0.4, 0, 0.2, 1) 0.4s backwards;
}

.hero-buttons {
    animation: fadeInUp 1s cubic-bezier(0.4, 0, 0.2, 1) 0.6s backwards;
}

.service-card {
    animation: fadeInUp 0.8s cubic-bezier(0.4, 0, 0.2, 1) backwards;
}

.about-content {
    animation: slideInLeft 1s cubic-bezier(0.4, 0, 0.2, 1);
}

.about-visual {
    animation: slideInRight 1s cubic-bezier(0.4, 0, 0.2, 1);
}

.about-visual i {
    animation: float 4s ease-in-out infinite;
}

.stat-number {
    animation: scaleIn 0.8s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.contact-info {
    animation: slideInLeft 1s cubic-bezier(0.4, 0, 0.2, 1);
}

.form-input:focus,
.form-textarea:focus {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(59, 130, 246, 0.2);
}

/* 更新关键帧动画 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-60px);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(60px);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.8);
    }

    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-15px);
    }
}

/* 增强的悬停效果 */
.brand-icon i,
.service-icon i,
.feature-item i {
    transition: all 0.6s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

/* 页面加载动画 */
@keyframes fadeInScale {
    from {
        opacity: 0;
        transform: scale(0.95);
    }

    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* 脉冲动画 */
@keyframes pulse-glow {

    0%,
    100% {
        box-shadow: 0 0 0 0 rgba(37, 99, 235, 0.4);
    }

    50% {
        box-shadow: 0 0 0 10px rgba(37, 99, 235, 0);
    }
}

/* 应用脉冲效果到按钮 */
.btn-primary:hover,
.btn-submit:hover {
    animation: pulse-glow 2s infinite;
}

/* 卡片进入动画优化 */
.service-card,
.brand-card {
    animation: fadeInScale 0.8s cubic-bezier(0.4, 0, 0.2, 1) backwards;
}

/* 平滑的颜色过渡 */
* {
    transition-property: background-color, border-color, color, fill, stroke;
    transition-duration: 0.3s;
    transition-timing-function: ease;
}

/* 移除不必要的过渡 */
*::before,
*::after {
    transition-property: none;
}

/* 重新应用特定元素的过渡 */
.brand-card::before,
.service-card::before,
.service-card::after,
.brand-card::before,
.news-content::before,
.careers-content::after,
.about-visual::before,
.stat-item::before,
.btn-primary::before,
.btn-secondary::before,
.btn-submit::before {
    transition: all 0.4s ease;
}

/* 文字渐显效果 */
@keyframes text-reveal {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.section-title,
.section-desc {
    animation: text-reveal 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 优化移动端动画 */
@media (prefers-reduced-motion: reduce) {

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* 增强的阴影效果 */
.service-card:hover,
.brand-card:hover,
.stat-item:hover {
    box-shadow:
        0 20px 50px rgba(37, 99, 235, 0.15),
        0 10px 20px rgba(37, 99, 235, 0.1),
        0 0 0 1px rgba(37, 99, 235, 0.1);
}

/* 光泽效果 */
@keyframes shine {
    0% {
        left: -100%;
    }

    100% {
        left: 100%;
    }
}

.service-card::after,
.brand-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 50%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    pointer-events: none;
}

.service-card:hover::after,
.brand-card:hover::after {
    animation: shine 1s ease-in-out;
}