/* ========== 基础变量 ========== */
:root {
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    --secondary-color: #0f172a;
    --accent-color: #f59e0b;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-light: #94a3b8;
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

ul {
    list-style: none;
}

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

/* ========== 容器 ========== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ========== 按钮 ========== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 28px;
    font-size: 15px;
    font-weight: 500;
    border-radius: var(--radius-md);
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition-normal);
    white-space: nowrap;
}

.btn-primary {
    background: var(--primary-color);
    color: #ffffff;
    border-color: var(--primary-color);
}

.btn-primary:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border-color: var(--border-color);
}

.btn-secondary:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.btn-white {
    background: #ffffff;
    color: var(--primary-color);
    border-color: #ffffff;
}

.btn-white:hover {
    background: var(--bg-secondary);
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-outline:hover {
    background: var(--primary-color);
    color: #ffffff;
}

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

.logo {
    display: flex;
    align-items: baseline;
    font-weight: 700;
    font-size: 24px;
}

.logo-text {
    color: var(--secondary-color);
}

.logo-domain {
    color: var(--primary-color);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 40px;
}

.nav-menu a {
    font-weight: 500;
    color: var(--text-secondary);
    position: relative;
    padding: 8px 0;
}

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

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

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

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
    background: none;
    border: none;
    cursor: pointer;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: all var(--transition-normal);
}

/* ========== 英雄区域 ========== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 0 80px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 50%, #f0fdfa 100%);
    z-index: -1;
}

.hero-bg::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 80%;
    height: 150%;
    background: radial-gradient(circle, rgba(37, 99, 235, 0.08) 0%, transparent 70%);
    animation: pulse 8s ease-in-out infinite;
}

.hero-bg::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 60%;
    height: 100%;
    background: radial-gradient(circle, rgba(245, 158, 11, 0.06) 0%, transparent 70%);
    animation: pulse 10s ease-in-out infinite reverse;
}

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

.hero-content {
    max-width: 720px;
}

.hero-title {
    font-size: clamp(40px, 6vw, 64px);
    font-weight: 700;
    line-height: 1.2;
    color: var(--secondary-color);
    margin-bottom: 24px;
}

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

.hero-subtitle {
    font-size: 20px;
    color: var(--text-secondary);
    margin-bottom: 40px;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    gap: 48px;
    margin-top: 64px;
    padding-top: 32px;
    border-top: 1px solid var(--border-color);
}

.stat-item {
    text-align: left;
}

.stat-number {
    display: block;
    font-size: 36px;
    font-weight: 700;
    color: var(--primary-color);
}

.stat-label {
    font-size: 14px;
    color: var(--text-secondary);
}

/* ========== 通用区块样式 ========== */
section {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 60px;
}

.section-title {
    font-size: 36px;
    font-weight: 700;
    color: var(--secondary-color);
    margin-bottom: 16px;
}

.section-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
}

.section-footer {
    text-align: center;
    margin-top: 48px;
}

/* ========== 热门职位 ========== */
.featured-jobs {
    background: var(--bg-secondary);
}

.jobs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 24px;
}

.job-card {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    padding: 28px;
    border: 1px solid var(--border-color);
    transition: all var(--transition-normal);
}

.job-card:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.job-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}

.job-tag {
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.tag-tech { background: #dbeafe; color: #1d4ed8; }
.tag-design { background: #fce7f3; color: #be185d; }
.tag-product { background: #d1fae5; color: #047857; }
.tag-business { background: #fef3c7; color: #b45309; }

.job-location {
    font-size: 13px;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 4px;
}

.job-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--secondary-color);
    margin-bottom: 12px;
}

.job-desc {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 20px;
    line-height: 1.7;
}

.job-meta {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 16px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-color);
}

.job-salary {
    font-size: 16px;
    font-weight: 600;
    color: var(--primary-color);
}

.job-type {
    font-size: 13px;
    color: var(--text-secondary);
}

.job-link {
    font-size: 14px;
    font-weight: 500;
    color: var(--primary-color);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: gap var(--transition-fast);
}

.job-link:hover {
    gap: 10px;
}

/* ========== 为什么选择我们 ========== */
.why-us {
    background: var(--bg-primary);
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 32px;
}

.benefit-card {
    text-align: center;
    padding: 40px 32px;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    transition: all var(--transition-normal);
}

.benefit-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.benefit-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    border-radius: var(--radius-lg);
    color: #ffffff;
}

.benefit-icon svg {
    width: 28px;
    height: 28px;
}

.benefit-card h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--secondary-color);
    margin-bottom: 12px;
}

.benefit-card p {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ========== 企业文化 ========== */
.culture {
    background: var(--bg-secondary);
}

.culture-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.culture-text h2 {
    font-size: 36px;
    font-weight: 700;
    color: var(--secondary-color);
    margin-bottom: 20px;
}

.culture-lead {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 32px;
}

.culture-list {
    margin-bottom: 40px;
}

.culture-list li {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 20px 0;
    border-bottom: 1px solid var(--border-color);
}

.culture-list li:last-child {
    border-bottom: none;
}

.culture-list strong {
    font-size: 16px;
    color: var(--secondary-color);
}

.culture-list span {
    font-size: 14px;
    color: var(--text-secondary);
}

.culture-image {
    display: flex;
    justify-content: center;
}

.image-placeholder {
    width: 100%;
    max-width: 480px;
    aspect-ratio: 4/3;
    background: linear-gradient(135deg, var(--bg-tertiary) 0%, var(--border-color) 100%);
    border-radius: var(--radius-xl);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
    color: var(--text-light);
}

.image-placeholder svg {
    width: 80px;
    height: 80px;
    opacity: 0.5;
}

.image-placeholder span {
    font-size: 16px;
}

/* ========== 招聘流程 ========== */
.process {
    background: var(--bg-primary);
}

.process-steps {
    display: flex;
    justify-content: center;
    align-items: flex-start;
    gap: 24px;
    flex-wrap: wrap;
}

.step {
    flex: 1;
    min-width: 220px;
    max-width: 280px;
    text-align: center;
    padding: 32px 24px;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    transition: all var(--transition-normal);
}

.step:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.step-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    color: #ffffff;
    font-size: 20px;
    font-weight: 700;
    border-radius: 50%;
    margin-bottom: 20px;
}

.step h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--secondary-color);
    margin-bottom: 12px;
}

.step p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
}

.step-connector {
    display: none;
    width: 60px;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color), var(--primary-light));
    align-self: center;
    opacity: 0.3;
}

/* ========== CTA 区域 ========== */
.cta {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: #ffffff;
    text-align: center;
    padding: 100px 0;
}

.cta-content h2 {
    font-size: 40px;
    font-weight: 700;
    margin-bottom: 16px;
}

.cta-content p {
    font-size: 20px;
    opacity: 0.9;
    margin-bottom: 40px;
}

/* ========== 页脚 ========== */
.footer {
    background: var(--secondary-color);
    color: #ffffff;
    padding: 80px 0 40px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 48px;
    margin-bottom: 60px;
}

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

.footer-brand p {
    font-size: 14px;
    color: #94a3b8;
    line-height: 1.8;
}

.footer-links h4,
.footer-contact h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 24px;
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links a {
    font-size: 14px;
    color: #94a3b8;
    transition: color var(--transition-fast);
}

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

.footer-contact ul {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-contact li {
    font-size: 14px;
    color: #94a3b8;
    line-height: 1.6;
}

.footer-bottom {
    padding-top: 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

.footer-bottom p {
    font-size: 14px;
    color: #64748b;
}

/* ========== 页面标题 ========== */
.page-header {
    padding: 160px 0 80px;
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
    text-align: center;
}

.page-title {
    font-size: 48px;
    font-weight: 700;
    color: var(--secondary-color);
    margin-bottom: 16px;
}

.page-subtitle {
    font-size: 20px;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* ========== 职位列表页 ========== */
.filter-bar {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 40px;
    padding: 24px;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
}

.filter-btn {
    padding: 10px 24px;
    font-size: 14px;
    font-weight: 500;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: #ffffff;
}

.jobs-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.job-item {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 24px;
    align-items: center;
    padding: 28px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    transition: all var(--transition-normal);
}

.job-item:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-md);
}

.job-info h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--secondary-color);
    margin-bottom: 8px;
}

.job-info p {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.job-tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.job-tags .job-tag {
    font-size: 12px;
    padding: 4px 10px;
}

.job-actions {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 12px;
}

.job-salary-large {
    font-size: 20px;
    font-weight: 700;
    color: var(--primary-color);
}

/* ========== 关于我们页 ========== */
.about-section {
    padding: 100px 0;
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.about-text h2 {
    font-size: 36px;
    font-weight: 700;
    color: var(--secondary-color);
    margin-bottom: 24px;
}

.about-text p {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 20px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.stat-box {
    padding: 32px;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    text-align: center;
}

.stat-box .stat-number {
    font-size: 48px;
    margin-bottom: 8px;
}

.stat-box .stat-label {
    font-size: 16px;
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 32px;
}

.team-card {
    text-align: center;
    padding: 32px;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    transition: all var(--transition-normal);
}

.team-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.team-avatar {
    width: 100px;
    height: 100px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 50%;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    font-size: 36px;
    font-weight: 600;
}

.team-card h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--secondary-color);
    margin-bottom: 4px;
}

.team-card .role {
    font-size: 14px;
    color: var(--primary-color);
    margin-bottom: 12px;
}

.team-card p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ========== 联系页 ========== */
.contact-section {
    padding: 100px 0;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-info h2 {
    font-size: 36px;
    font-weight: 700;
    color: var(--secondary-color);
    margin-bottom: 20px;
}

.contact-info > p {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 40px;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
}

.contact-item .icon {
    width: 48px;
    height: 48px;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    flex-shrink: 0;
}

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

.contact-item h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--secondary-color);
    margin-bottom: 4px;
}

.contact-item p {
    font-size: 14px;
    color: var(--text-secondary);
}

.contact-form {
    background: var(--bg-secondary);
    padding: 48px;
    border-radius: var(--radius-xl);
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--secondary-color);
    margin-bottom: 8px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 14px 18px;
    font-size: 15px;
    font-family: inherit;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-primary);
    transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

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

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.form-submit {
    width: 100%;
    padding: 16px;
    font-size: 16px;
}

/* ========== 响应式设计 ========== */
@media (max-width: 1024px) {
    .culture-content,
    .about-grid,
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .culture-image {
        order: -1;
    }

    .footer-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: 24px;
        gap: 0;
        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;
    }

    .nav-menu li {
        width: 100%;
    }

    .nav-menu a {
        display: block;
        padding: 16px 0;
        border-bottom: 1px solid var(--border-color);
    }

    .nav-toggle {
        display: flex;
    }

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

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

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

    .hero {
        padding: 100px 0 60px;
    }

    .hero-title {
        font-size: 36px;
    }

    .hero-subtitle {
        font-size: 16px;
    }

    .hero-stats {
        flex-wrap: wrap;
        gap: 32px;
    }

    .stat-item {
        flex: 1;
        min-width: 120px;
    }

    .stat-number {
        font-size: 28px;
    }

    section {
        padding: 60px 0;
    }

    .section-title {
        font-size: 28px;
    }

    .process-steps {
        flex-direction: column;
        align-items: center;
    }

    .step-connector {
        display: block;
        width: 2px;
        height: 40px;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .job-item {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .job-actions {
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .filter-bar {
        overflow-x: auto;
        flex-wrap: nowrap;
        -webkit-overflow-scrolling: touch;
    }

    .filter-btn {
        flex-shrink: 0;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

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

    .btn {
        width: 100%;
    }

    .benefits-grid {
        grid-template-columns: 1fr;
    }

    .cta-content h2 {
        font-size: 28px;
    }
}