/* ===================================
   OPC超级个体 - 独立项目样式文件
   =================================== */

/* ==================== 全局重置 ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", "Heiti SC", "SimHei", Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fafafa;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
}

ul {
    list-style: none;
}

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

/* ==================== OPC头部导航 ==================== */
.opc-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 15px 0;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logo img {
    width: 50px;
    height: 50px;
    border-radius: 50%;
}

.logo h1 {
    font-size: 24px;
    font-weight: 700;
    color: #2563eb;
    margin: 0;
}

.tagline {
    font-size: 14px;
    color: #666;
    font-weight: 500;
}

.nav-menu ul {
    display: flex;
    gap: 30px;
    align-items: center;
}

.nav-menu a {
    font-weight: 500;
    color: #333;
    padding: 8px 15px;
    border-radius: 25px;
    transition: all 0.3s ease;
}

.nav-menu a:hover,
.nav-menu a.active {
    background: #2563eb;
    color: white;
}

.mobile-menu-btn {
    display: none;
    font-size: 24px;
    cursor: pointer;
}

/* ==================== OPC首页Banner ==================== */
.opc-hero {
    padding: 150px 0 100px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    position: relative;
    overflow: hidden;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.hero-text h1 {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 20px;
    line-height: 1.2;
}

.subtitle {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 20px;
    opacity: 0.9;
}

.description {
    font-size: 1.1rem;
    margin-bottom: 40px;
    opacity: 0.85;
    max-width: 600px;
}

.hero-buttons {
    display: flex;
    gap: 20px;
}

.btn {
    padding: 15px 35px;
    border-radius: 30px;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    display: inline-block;
    text-align: center;
}

.btn-primary {
    background: #ffffff;
    color: #667eea;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.3);
}

.btn-secondary {
    background: transparent;
    color: white;
    border: 2px solid white;
}

.btn-secondary:hover {
    background: white;
    color: #667eea;
}

/* AI可视化动画 */
.ai-visualization {
    position: relative;
    height: 400px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.center-node {
    position: absolute;
    width: 120px;
    height: 120px;
    background: linear-gradient(135deg, #ff6b6b, #ffa502);
    border-radius: 50%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    color: white;
    font-weight: 600;
    box-shadow: 0 10px 30px rgba(255, 107, 107, 0.4);
    z-index: 10;
    animation: pulse 2s infinite;
}

.center-node i {
    font-size: 2rem;
    margin-bottom: 5px;
}

.ai-node {
    position: absolute;
    width: 80px;
    height: 80px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    color: white;
    font-size: 0.8rem;
    font-weight: 500;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    animation: float 3s ease-in-out infinite;
    animation-delay: var(--delay);
    opacity: 0;
    transform: scale(0);
    transition: all 0.5s ease;
}

.ai-node:nth-child(1) { top: 20%; left: 20%; }
.ai-node:nth-child(2) { top: 20%; right: 20%; }
.ai-node:nth-child(3) { bottom: 20%; left: 20%; }
.ai-node:nth-child(4) { bottom: 20%; right: 20%; }

.ai-node i {
    font-size: 1.5rem;
    margin-bottom: 5px;
}

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

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

/* ==================== 价值主张 ==================== */
.value-proposition {
    padding: 100px 0;
    background: white;
}

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

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: #333;
    margin-bottom: 20px;
}

.section-header p {
    font-size: 1.2rem;
    color: #666;
    max-width: 600px;
    margin: 0 auto;
}

.value-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.value-card {
    background: #f8fafc;
    padding: 40px 30px;
    border-radius: 20px;
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid #e2e8f0;
}

.value-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    border-color: #2563eb;
}

.value-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #2563eb, #60a5fa);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
    color: white;
    font-size: 2rem;
}

.value-card h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 15px;
    color: #333;
}

.value-card p {
    color: #666;
    line-height: 1.7;
}

/* ==================== 创业平台 ==================== */
.opc-platform {
    padding: 100px 0;
    background: #f1f5f9;
}

.platform-features {
    display: flex;
    flex-direction: column;
    gap: 80px;
}

.feature-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.feature-content h3 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 25px;
    color: #333;
}

.feature-content p {
    font-size: 1.1rem;
    color: #666;
    margin-bottom: 30px;
    line-height: 1.8;
}

.feature-content ul {
    margin-left: 20px;
}

.feature-content li {
    margin-bottom: 15px;
    color: #555;
    display: flex;
    align-items: flex-start;
    gap: 10px;
}

.feature-content i {
    color: #10b981;
    margin-top: 5px;
}

/* 仪表板预览 */
.dashboard-preview {
    background: #1e293b;
    border-radius: 15px;
    padding: 25px;
    color: white;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.dashboard-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 25px;
    padding-bottom: 15px;
    border-bottom: 1px solid #334155;
}

.status-indicator {
    width: 12px;
    height: 12px;
    background: #10b981;
    border-radius: 50%;
    display: inline-block;
    animation: blink 1.5s infinite;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

.dashboard-content {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
}

.metric-card {
    background: rgba(255, 255, 255, 0.1);
    padding: 20px;
    border-radius: 10px;
    text-align: center;
}

.metric-value {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 5px;
    color: #60a5fa;
}

.metric-label {
    font-size: 0.9rem;
    color: #cbd5e1;
}

/* ==================== AI工具矩阵 ==================== */
.ai-tools {
    padding: 100px 0;
    background: white;
}

.tools-categories {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.category-card {
    background: #f8fafc;
    border-radius: 20px;
    overflow: hidden;
    border: 1px solid #e2e8f0;
    transition: all 0.3s ease;
}

.category-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    border-color: #2563eb;
}

.category-header {
    background: linear-gradient(135deg, #2563eb, #60a5fa);
    color: white;
    padding: 25px;
    display: flex;
    align-items: center;
    gap: 15px;
}

.category-header i {
    font-size: 2rem;
}

.category-header h3 {
    font-size: 1.5rem;
    font-weight: 700;
}

.tools-list {
    padding: 30px;
}

.tool-item {
    margin-bottom: 25px;
    padding-bottom: 25px;
    border-bottom: 1px solid #e2e8f0;
}

.tool-item:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.tool-item h4 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 10px;
    color: #333;
}

.tool-item p {
    color: #666;
    line-height: 1.6;
}

/* ==================== 社区生态 ==================== */
.opc-community {
    padding: 100px 0;
    background: linear-gradient(135deg, #f0f9ff, #e0f2fe);
}

.community-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-bottom: 60px;
}

.feature-block {
    background: white;
    padding: 40px 30px;
    border-radius: 20px;
    text-align: center;
    transition: all 0.3s ease;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    border: 1px solid #e0f2fe;
}

.feature-block:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
    border-color: #2563eb;
}

.feature-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, #0ea5e9, #0284c7);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
    color: white;
    font-size: 1.8rem;
}

.feature-block h3 {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 15px;
    color: #333;
}

.feature-block p {
    color: #666;
    line-height: 1.7;
}

/* 社区统计数据 */
.community-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    max-width: 800px;
    margin: 0 auto;
}

.stat-card {
    background: white;
    padding: 30px;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.08);
    border: 1px solid #e0f2fe;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: #2563eb;
    margin-bottom: 10px;
}

.stat-label {
    font-size: 1.1rem;
    color: #666;
    font-weight: 500;
}

/* ==================== 成功案例 ==================== */
.success-stories {
    padding: 100px 0;
    background: white;
}

.stories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.story-card {
    background: #f8fafc;
    border-radius: 20px;
    overflow: hidden;
    transition: all 0.3s ease;
    border: 1px solid #e2e8f0;
}

.story-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.story-card.featured {
    grid-column: span 2;
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    border: none;
}

.story-header {
    display: flex;
    align-items: center;
    padding: 25px;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.author-avatar {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    overflow: hidden;
    margin-right: 20px;
    border: 3px solid white;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

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

.author-info h3 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 5px;
}

.author-info p {
    color: #666;
    margin-bottom: 5px;
}

.location {
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: 0.9rem;
    color: #999;
}

.story-card.featured .author-info h3,
.story-card.featured .author-info p,
.story-card.featured .location {
    color: white;
}

.story-content {
    padding: 30px;
}

.story-content h4 {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 15px;
    color: #333;
}

.story-card.featured .story-content h4 {
    color: white;
}

.story-content p {
    color: #666;
    line-height: 1.7;
    margin-bottom: 25px;
}

.story-card.featured .story-content p {
    color: rgba(255, 255, 255, 0.9);
}

.story-results {
    display: flex;
    gap: 20px;
}

.result-item {
    text-align: center;
    flex: 1;
}

.number {
    display: block;
    font-size: 1.5rem;
    font-weight: 800;
    color: #2563eb;
    margin-bottom: 5px;
}

.story-card.featured .number {
    color: white;
}

.label {
    font-size: 0.9rem;
    color: #666;
}

.story-card.featured .label {
    color: rgba(255, 255, 255, 0.8);
}

/* ==================== 资源中心 ==================== */
.resource-center {
    padding: 100px 0;
    background: #f1f5f9;
}

.resources-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.resource-category {
    background: white;
    border-radius: 20px;
    padding: 40px 30px;
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid #e2e8f0;
}

.resource-category:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    border-color: #2563eb;
}

.category-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #f59e0b, #f97316);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
    color: white;
    font-size: 2rem;
}

.resource-category h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 25px;
    color: #333;
}

.resource-category ul {
    text-align: left;
    margin-bottom: 30px;
}

.resource-category li {
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
    color: #555;
}

.resource-category i {
    color: #10b981;
    width: 20px;
}

.btn-outline {
    background: transparent;
    color: #2563eb;
    border: 2px solid #2563eb;
    padding: 12px 25px;
    border-radius: 30px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-outline:hover {
    background: #2563eb;
    color: white;
}

/* ==================== 行动号召 ==================== */
.cta-section {
    padding: 100px 0;
    background: linear-gradient(135deg, #2563eb, #60a5fa);
    color: white;
    text-align: center;
}

.cta-content h2 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 20px;
}

.cta-content p {
    font-size: 1.2rem;
    margin-bottom: 40px;
    opacity: 0.9;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 40px;
}

.btn-large {
    padding: 18px 40px;
    font-size: 1.2rem;
}

.trust-indicators {
    display: flex;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
}

.indicator {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 500;
}

.indicator i {
    font-size: 1.2rem;
}

/* ==================== 页脚 ==================== */
.opc-footer {
    background: #1e293b;
    color: #cbd5e1;
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 50px;
    margin-bottom: 40px;
}

.footer-logo {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.footer-logo img {
    width: 60px;
    height: 60px;
    margin-bottom: 20px;
}

.footer-logo h3 {
    color: white;
    font-size: 1.5rem;
    margin-bottom: 10px;
}

.footer-logo p {
    color: #94a3b8;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.footer-column h4 {
    color: white;
    font-size: 1.2rem;
    margin-bottom: 20px;
    font-weight: 600;
}

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

.footer-column a {
    color: #94a3b8;
    transition: all 0.3s ease;
}

.footer-column a:hover {
    color: #60a5fa;
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid #334155;
    color: #94a3b8;
}

/* ==================== 响应式设计 ==================== */
@media (max-width: 992px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-text h1 {
        font-size: 2.5rem;
    }
    
    .ai-visualization {
        height: 300px;
    }
    
    .feature-row {
        grid-template-columns: 1fr;
    }
    
    .tools-categories {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-links {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .hero-text h1 {
        font-size: 2rem;
    }
    
    .section-header h2 {
        font-size: 2rem;
    }
    
    .story-card.featured {
        grid-column: span 1;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .trust-indicators {
        flex-direction: column;
        gap: 20px;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .opc-hero {
        padding: 120px 0 80px;
    }
    
    .hero-buttons {
        flex-direction: column;
        gap: 15px;
    }
    
    .btn {
        width: 100%;
        text-align: center;
    }
    
    .dashboard-content {
        grid-template-columns: 1fr;
    }
    
    .community-stats {
        grid-template-columns: repeat(2, 1fr);
    }
}