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

:root {
    --primary-color: #1a73e8;
    --primary-dark: #1557b0;
    --secondary-color: #34a853;
    --accent-color: #00d4ff;
    --dark-bg: #0a0f1a;
    --card-bg: #111827;
    --text-primary: #ffffff;
    --text-secondary: #9ca3af;
    --gradient-1: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-2: linear-gradient(135deg, #1a73e8 0%, #00d4ff 100%);
    --gradient-hero: linear-gradient(135deg, #0a0f1a 0%, #1a1f2e 50%, #0d1320 100%);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--dark-bg);
}

a {
    text-decoration: none;
    color: inherit;
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 15, 26, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding: 0 5%;
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.logo-icon {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    background: transparent;
}

.logo-img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
}

.nav-links {
    display: flex;
    gap: 40px;
    list-style: none;
}

.nav-links a {
    color: var(--text-secondary);
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-links a:hover {
    color: var(--accent-color);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-color);
    transition: width 0.3s ease;
}

.nav-links a:hover::after {
    width: 100%;
}

/* 英雄区块 */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-hero);
    position: relative;
    overflow: hidden;
    padding: 120px 5% 80px;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 80%, rgba(26, 115, 232, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(0, 212, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(102, 126, 234, 0.1) 0%, transparent 40%);
    pointer-events: none;
}

.hero-content {
    max-width: 900px;
    text-align: center;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-block;
    padding: 8px 20px;
    background: rgba(26, 115, 232, 0.2);
    border: 1px solid rgba(26, 115, 232, 0.3);
    border-radius: 50px;
    color: var(--accent-color);
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 30px;
    animation: fadeInUp 0.6s ease;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 25px;
    background: linear-gradient(135deg, #ffffff 0%, #a8c0ff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeInUp 0.6s ease 0.1s both;
}

.hero p {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto 40px;
    animation: fadeInUp 0.6s ease 0.2s both;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    animation: fadeInUp 0.6s ease 0.3s both;
}

.btn {
    padding: 14px 32px;
    border-radius: 10px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-primary {
    background: var(--gradient-2);
    color: white;
    box-shadow: 0 4px 20px rgba(26, 115, 232, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 30px rgba(26, 115, 232, 0.5);
}

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

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

/* 关于我们区块 */
.about {
    padding: 100px 5%;
    background: var(--dark-bg);
}

.section-container {
    max-width: 1200px;
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 15px;
    background: linear-gradient(135deg, #ffffff 0%, #a8c0ff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-header p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-text h3 {
    font-size: 1.8rem;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.about-text p {
    color: var(--text-secondary);
    margin-bottom: 15px;
    font-size: 1.05rem;
}

.highlight-box {
    background: linear-gradient(135deg, rgba(26, 115, 232, 0.1) 0%, rgba(0, 212, 255, 0.05) 100%);
    border: 1px solid rgba(26, 115, 232, 0.2);
    border-radius: 16px;
    padding: 25px;
    margin-top: 30px;
}

.highlight-box h4 {
    color: var(--accent-color);
    margin-bottom: 10px;
    font-size: 1.1rem;
}

.highlight-box p {
    margin-bottom: 0;
}

/* 特色区块 */
.features {
    padding: 100px 5%;
    background: linear-gradient(180deg, var(--dark-bg) 0%, #111827 100%);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.feature-card {
    background: var(--card-bg);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: 35px;
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    border-color: rgba(26, 115, 232, 0.3);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.feature-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-2);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 1.3rem;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* 图片展示区块 */
.gallery {
    padding: 100px 5%;
    background: var(--dark-bg);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.gallery-item {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    aspect-ratio: 16/10;
    background: var(--card-bg);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

.gallery-item:hover {
    transform: scale(1.02);
    border-color: rgba(26, 115, 232, 0.3);
}

.gallery-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(26, 115, 232, 0.1) 0%, rgba(0, 212, 255, 0.05) 100%);
    color: var(--text-secondary);
}

.gallery-placeholder .icon {
    font-size: 3rem;
    margin-bottom: 15px;
    opacity: 0.5;
}

.gallery-placeholder span {
    font-size: 1.1rem;
    font-weight: 500;
}

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

.gallery-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 20px;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
}

.gallery-overlay h4 {
    color: white;
    font-size: 1.1rem;
}

/* 合作院校 */
.universities {
    padding: 80px 5%;
    background: linear-gradient(180deg, var(--dark-bg) 0%, #0d1320 100%);
}

.uni-logos {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 60px;
    flex-wrap: wrap;
    margin-top: 40px;
}

.uni-logo {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    padding: 20px 30px;
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.uni-logo:hover {
    background: rgba(26, 115, 232, 0.1);
    border-color: rgba(26, 115, 232, 0.3);
    color: var(--accent-color);
}

/* 页脚 */
.footer {
    background: #060a10;
    padding: 60px 5% 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 60px;
}

.footer-brand .logo {
    margin-bottom: 20px;
}

.footer-brand p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
}

.footer-links h4 {
    color: var(--text-primary);
    margin-bottom: 20px;
    font-size: 1.1rem;
}

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

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    color: var(--text-secondary);
    transition: color 0.3s ease;
}

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

.footer-bottom {
    max-width: 1200px;
    margin: 40px auto 0;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* 招聘页面样式 */
.recruitment-hero {
    padding: 150px 5% 80px;
    background: var(--gradient-hero);
    position: relative;
}

.recruitment-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 30% 70%, rgba(26, 115, 232, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 70% 30%, rgba(0, 212, 255, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.recruitment-hero-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    position: relative;
    z-index: 1;
}

.recruitment-hero h1 {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 20px;
    background: linear-gradient(135deg, #ffffff 0%, #a8c0ff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.recruitment-hero p {
    color: var(--text-secondary);
    font-size: 1.2rem;
}

/* 职位卡片 */
.jobs-section {
    padding: 80px 5%;
    background: var(--dark-bg);
}

.job-card {
    background: var(--card-bg);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: 40px;
    margin-bottom: 40px;
    transition: all 0.3s ease;
}

.job-card:hover {
    border-color: rgba(26, 115, 232, 0.3);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.job-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 30px;
    flex-wrap: wrap;
    gap: 20px;
}

.job-title h2 {
    font-size: 1.8rem;
    color: var(--text-primary);
    margin-bottom: 15px;
}

.job-tags {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.job-tag {
    padding: 6px 14px;
    background: rgba(26, 115, 232, 0.15);
    border-radius: 20px;
    color: var(--accent-color);
    font-size: 0.85rem;
    font-weight: 500;
}

.job-salary {
    text-align: right;
}

.job-salary .amount {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--secondary-color);
}

.job-salary .unit {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.job-section {
    margin-bottom: 30px;
}

.job-section h3 {
    font-size: 1.2rem;
    color: var(--accent-color);
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.job-section h3::before {
    content: '';
    width: 4px;
    height: 20px;
    background: var(--gradient-2);
    border-radius: 2px;
}

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

.job-section ul {
    list-style: none;
    color: var(--text-secondary);
}

.job-section li {
    padding: 8px 0;
    padding-left: 25px;
    position: relative;
}

.job-section li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--accent-color);
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
    margin-top: 15px;
}

.benefit-item {
    background: rgba(26, 115, 232, 0.1);
    border: 1px solid rgba(26, 115, 232, 0.2);
    border-radius: 12px;
    padding: 15px 20px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.benefit-item .icon {
    font-size: 1.3rem;
}

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

.apply-section {
    background: linear-gradient(135deg, rgba(26, 115, 232, 0.15) 0%, rgba(0, 212, 255, 0.1) 100%);
    border: 1px solid rgba(26, 115, 232, 0.3);
    border-radius: 16px;
    padding: 30px;
    text-align: center;
    margin-top: 30px;
}

.apply-section p {
    color: var(--text-secondary);
    margin-bottom: 20px;
    font-size: 1.05rem;
}

/* CTA 区块 */
.cta-section {
    padding: 100px 5%;
    background: linear-gradient(135deg, rgba(26, 115, 232, 0.1) 0%, rgba(0, 212, 255, 0.05) 100%);
    text-align: center;
}

.cta-content {
    max-width: 700px;
    margin: 0 auto;
}

.cta-content h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
    background: linear-gradient(135deg, #ffffff 0%, #a8c0ff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.cta-content p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 30px;
}

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

/* 响应式设计 */
@media (max-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .hero p {
        font-size: 1.1rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .gallery-grid {
        grid-template-columns: 1fr;
    }
    
    .nav-links {
        display: none;
    }
    
    .section-header h2 {
        font-size: 2rem;
    }
    
    .job-header {
        flex-direction: column;
    }
    
    .job-salary {
        text-align: left;
    }
    
    .recruitment-hero h1 {
        font-size: 2.2rem;
    }
}