/* 重置样式和基础设置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #00d4ff;
    --secondary-color: #0099cc;
    --accent-color: #ff6b35;
    --bg-dark: #0a0e27;
    --bg-darker: #050814;
    --text-light: #ffffff;
    --text-gray: #b8c6db;
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-tech: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --shadow-glow: 0 0 20px rgba(0, 212, 255, 0.3);
    --border-radius: 12px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
    font-family: 'Noto Sans SC', sans-serif;
    background: var(--bg-dark);
    color: var(--text-light);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    min-height: 100vh;
    background: 
        radial-gradient(circle at 20% 50%, rgba(120, 119, 198, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255, 107, 53, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 40% 80%, rgba(0, 212, 255, 0.2) 0%, transparent 50%),
        var(--bg-dark);
}

/* 导航栏样式 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(10, 14, 39, 0.95);
    backdrop-filter: blur(20px);
    z-index: 1000;
    padding: 1rem 0;
    border-bottom: 1px solid rgba(0, 212, 255, 0.2);
}

.nav-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 2rem;
}

.logo h1 {
    font-family: 'Orbitron', monospace;
    font-size: 2rem;
    font-weight: 900;
    background: var(--gradient-tech);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.2rem;
}

.logo-subtitle {
    font-size: 0.8rem;
    color: var(--text-gray);
    display: block;
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-link {
    color: var(--text-gray);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-color);
    background: rgba(0, 212, 255, 0.1);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--gradient-tech);
    transition: var(--transition);
    transform: translateX(-50%);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 80%;
}

/* 通用section样式 */
section {
    padding: 6rem 0;
    position: relative;
}

.section-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.section-title {
    font-family: 'Orbitron', monospace;
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 1rem;
    background: var(--gradient-tech);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    text-align: center;
    color: var(--text-gray);
    font-size: 1.1rem;
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* AI交互区域样式 */
.ai-interaction-section {
    padding-top: 10rem;
    background: 
        radial-gradient(circle at 50% 50%, rgba(0, 212, 255, 0.1) 0%, transparent 70%);
}

.robot-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    margin-top: 3rem;
}

.robot-display {
    position: relative;
    text-align: center;
}

#robotCanvas {
    background: 
        radial-gradient(circle at 30% 30%, rgba(0, 212, 255, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 70% 70%, rgba(75, 172, 254, 0.1) 0%, transparent 50%),
        radial-gradient(circle at center, rgba(255, 255, 255, 0.02) 0%, transparent 70%),
        linear-gradient(135deg, rgba(0, 212, 255, 0.05) 0%, rgba(75, 172, 254, 0.05) 100%);
    border-radius: 50%;
    box-shadow: 
        0 0 30px rgba(0, 212, 255, 0.4),
        inset 0 0 30px rgba(0, 212, 255, 0.1),
        0 0 60px rgba(75, 172, 254, 0.2);
    border: 3px solid transparent;
    background-clip: padding-box;
    position: relative;
    animation: robotGlow 4s ease-in-out infinite alternate;
    overflow: hidden;
}

#robotCanvas::before {
    content: '';
    position: absolute;
    top: -3px;
    left: -3px;
    right: -3px;
    bottom: -3px;
    background: linear-gradient(45deg, 
        rgba(0, 212, 255, 0.6) 0%, 
        rgba(75, 172, 254, 0.4) 25%,
        rgba(255, 107, 53, 0.4) 50%,
        rgba(75, 172, 254, 0.4) 75%,
        rgba(0, 212, 255, 0.6) 100%);
    border-radius: 50%;
    z-index: -1;
    animation: borderRotate 8s linear infinite;
}

#robotCanvas::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 120%;
    height: 120%;
    background: 
        conic-gradient(from 0deg, 
            transparent 0deg, 
            rgba(0, 212, 255, 0.1) 90deg, 
            transparent 180deg, 
            rgba(75, 172, 254, 0.1) 270deg, 
            transparent 360deg);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    z-index: -2;
    animation: scanRotate 6s linear infinite;
}

@keyframes robotGlow {
    0% { 
        box-shadow: 
            0 0 30px rgba(0, 212, 255, 0.4),
            inset 0 0 30px rgba(0, 212, 255, 0.1),
            0 0 60px rgba(75, 172, 254, 0.2);
        transform: scale(1);
    }
    50% {
        box-shadow: 
            0 0 50px rgba(0, 212, 255, 0.6),
            inset 0 0 40px rgba(0, 212, 255, 0.15),
            0 0 80px rgba(75, 172, 254, 0.3);
        transform: scale(1.02);
    }
    100% { 
        box-shadow: 
            0 0 40px rgba(0, 212, 255, 0.5),
            inset 0 0 35px rgba(0, 212, 255, 0.12),
            0 0 70px rgba(75, 172, 254, 0.25);
        transform: scale(1);
    }
}

@keyframes borderRotate {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

@keyframes scanRotate {
    0% { transform: translate(-50%, -50%) rotate(0deg); }
    100% { transform: translate(-50%, -50%) rotate(360deg); }
}

.robot-status {
    margin-top: 1.5rem;
    padding: 1rem;
    background: rgba(0, 212, 255, 0.1);
    border-radius: var(--border-radius);
    border: 1px solid rgba(0, 212, 255, 0.3);
}

#robotStatusText {
    color: var(--primary-color);
    font-weight: 500;
    font-size: 1.1rem;
}

.interaction-panel {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(20px);
    border-radius: var(--border-radius);
    padding: 2rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.input-section {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
}

#commandInput {
    flex: 1;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid rgba(0, 212, 255, 0.3);
    border-radius: var(--border-radius);
    color: var(--text-light);
    font-size: 1rem;
    transition: var(--transition);
}

#commandInput:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: var(--shadow-glow);
}

#commandInput::placeholder {
    color: var(--text-gray);
}

.command-btn {
    position: relative;
    padding: 1rem 2rem;
    background: var(--gradient-tech);
    border: none;
    border-radius: var(--border-radius);
    color: white;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    overflow: hidden;
}

.command-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 212, 255, 0.4);
}

.btn-glow {
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s;
}

.command-btn:hover .btn-glow {
    left: 100%;
}

.quick-commands h4 {
    color: var(--text-gray);
    margin-bottom: 1rem;
    font-size: 1rem;
}

.command-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 0.8rem;
}

.quick-cmd {
    padding: 0.8rem;
    background: 
        linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0.05) 100%),
        rgba(0, 212, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--border-radius);
    color: var(--text-light);
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.9rem;
    text-align: center;
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.quick-cmd::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.quick-cmd:hover::before {
    left: 100%;
}

.quick-cmd:hover {
    background: 
        linear-gradient(135deg, rgba(0, 212, 255, 0.3) 0%, rgba(75, 172, 254, 0.2) 100%),
        rgba(0, 212, 255, 0.1);
    border-color: var(--primary-color);
    transform: translateY(-3px) scale(1.05);
    box-shadow: 
        0 8px 25px rgba(0, 212, 255, 0.3),
        0 0 20px rgba(0, 212, 255, 0.2);
    color: #ffffff;
}

.quick-cmd:active {
    transform: translateY(-1px) scale(1.02);
}

/* 新闻区域样式 */
.news-section {
    background: rgba(255, 255, 255, 0.02);
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.news-card {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(20px);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: var(--transition);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.news-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--gradient-tech);
    transform: scaleX(0);
    transition: var(--transition);
}

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

.news-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.3);
    border-color: rgba(0, 212, 255, 0.3);
}

.news-image {
    width: 100%;
    height: 200px;
    background: var(--gradient-primary);
    border-radius: var(--border-radius);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: white;
}

.news-title {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.8rem;
    color: var(--text-light);
    line-height: 1.4;
}

.news-summary {
    color: var(--text-gray);
    font-size: 0.95rem;
    line-height: 1.5;
    margin-bottom: 1rem;
}

.news-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.85rem;
    color: var(--text-gray);
}

.news-date {
    opacity: 0.8;
}

.news-category {
    background: var(--gradient-tech);
    padding: 0.3rem 0.8rem;
    border-radius: 15px;
    font-size: 0.75rem;
    font-weight: 500;
}

.load-more {
    text-align: center;
}

.load-more-btn {
    padding: 1rem 2rem;
    background: transparent;
    border: 2px solid var(--primary-color);
    border-radius: var(--border-radius);
    color: var(--primary-color);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.load-more-btn:hover {
    background: var(--primary-color);
    color: var(--bg-dark);
    box-shadow: var(--shadow-glow);
}

/* 联系区域样式 */
.contact-section {
    background: rgba(0, 0, 0, 0.2);
}

.contact-info {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.contact-info h3 {
    font-family: 'Orbitron', monospace;
    font-size: 2rem;
    margin-bottom: 2rem;
    background: var(--gradient-tech);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.contact-details {
    display: flex;
    justify-content: center;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: rgba(255, 255, 255, 0.05);
    padding: 1.5rem 2rem;
    border-radius: var(--border-radius);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.contact-icon {
    font-size: 2rem;
}

.contact-text {
    text-align: left;
}

.contact-label {
    display: block;
    color: var(--text-gray);
    font-size: 0.9rem;
    margin-bottom: 0.3rem;
}

.contact-value {
    color: var(--primary-color);
    text-decoration: none;
    font-size: 1.1rem;
    font-weight: 500;
    transition: var(--transition);
}

.contact-value:hover {
    color: var(--text-light);
}

/* 页脚样式 */
.footer {
    background: var(--bg-darker);
    padding: 2rem 0;
    text-align: center;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.footer p {
    color: var(--text-gray);
    font-size: 0.9rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-content {
        flex-direction: column;
        gap: 1rem;
        padding: 0 1rem;
    }
    
    .nav-links {
        gap: 1rem;
    }
    
    .section-content {
        padding: 0 1rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .robot-container {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    #robotCanvas {
        width: 300px;
        height: 300px;
    }
    
    .input-section {
        flex-direction: column;
    }
    
    .command-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .news-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .contact-item {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .ai-interaction-section {
        padding-top: 8rem;
    }
    
    section {
        padding: 4rem 0;
    }
    
    .interaction-panel {
        padding: 1.5rem;
    }
    
    .command-grid {
        grid-template-columns: 1fr;
    }
    
    .logo h1 {
        font-size: 1.5rem;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--gradient-tech);
    border-radius: 4px;
}

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

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