/* 基础样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* 变量定义 - Claude 风格配色 */
:root {
    --primary-color: #d97757;
    --secondary-color: #1a1a1a;
    --text-color: #2d2d2d;
    --text-light: #6b6b6b;
    --bg-color: #faf9f7;
    --bg-alt: #f5f4f0;
    --border-color: #e8e6e1;
    --white: #ffffff;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 基础样式 */
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    color: var(--text-color);
    background-color: var(--bg-color);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(250, 249, 247, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: var(--transition);
}

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

.nav-brand h1 {
    font-size: 24px;
    font-weight: 600;
    color: var(--secondary-color);
    letter-spacing: -0.5px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 32px;
    align-items: center;
}

.nav-menu a {
    text-decoration: none;
    color: var(--text-color);
    font-size: 15px;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

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

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: var(--transition);
}

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

.admin-link {
    padding: 8px 16px;
    background: var(--secondary-color);
    color: var(--white) !important;
    border-radius: 8px;
    font-size: 14px !important;
}

.admin-link:hover {
    background: var(--primary-color) !important;
    color: var(--white) !important;
}

.admin-link::after {
    display: none !important;
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.mobile-menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--secondary-color);
    transition: var(--transition);
}

/* Hero 区域 */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #faf9f7 0%, #f5f4f0 100%);
    overflow: hidden;
    padding-top: 72px;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('https://images.unsplash.com/photo-1562408590-e32931084e29?w=1920&h=1080&fit=crop') center/cover;
    opacity: 0.08;
}

.hero-content {
    position: relative;
    text-align: center;
    max-width: 800px;
    padding: 0 24px;
    animation: fadeInUp 0.8s ease-out;
}

.hero-title {
    font-size: clamp(48px, 8vw, 96px);
    font-weight: 700;
    color: var(--secondary-color);
    letter-spacing: -2px;
    margin-bottom: 16px;
    line-height: 1.1;
}

.hero-subtitle {
    font-size: clamp(20px, 3vw, 28px);
    color: var(--primary-color);
    font-weight: 500;
    margin-bottom: 24px;
    letter-spacing: -0.5px;
}

.hero-description {
    font-size: clamp(16px, 2vw, 18px);
    color: var(--text-light);
    margin-bottom: 40px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

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

.btn {
    display: inline-block;
    padding: 14px 32px;
    font-size: 16px;
    font-weight: 500;
    text-decoration: none;
    border-radius: 12px;
    transition: var(--transition);
    cursor: pointer;
    border: none;
}

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

.btn-primary:hover {
    background: #c4664a;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: var(--white);
    color: var(--secondary-color);
    border: 1px solid var(--border-color);
}

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

/* 通用 Section 样式 */
.section {
    padding: 120px 0;
}

.section-alt {
    background: var(--bg-alt);
}

.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-title {
    font-size: clamp(32px, 4vw, 48px);
    font-weight: 700;
    color: var(--secondary-color);
    margin-bottom: 16px;
    letter-spacing: -1px;
}

.section-subtitle {
    font-size: 18px;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
}

/* 关于区域 */
.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

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

.feature-list {
    list-style: none;
    margin-top: 24px;
}

.feature-list li {
    padding: 12px 0;
    padding-left: 28px;
    position: relative;
    font-size: 16px;
    color: var(--text-color);
}

.feature-list li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

.about-image img {
    width: 100%;
    height: auto;
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
}

/* 特色区域 */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
}

.feature-card {
    background: var(--white);
    padding: 40px 32px;
    border-radius: 16px;
    text-align: center;
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

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

.feature-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

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

.feature-card p {
    font-size: 15px;
    color: var(--text-light);
    line-height: 1.6;
}

/* 动态区域 */
.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 32px;
}

.news-card {
    background: var(--white);
    border-radius: 16px;
    overflow: hidden;
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

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

.news-card-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.news-card-content {
    padding: 24px;
}

.news-card-date {
    font-size: 13px;
    color: var(--text-light);
    margin-bottom: 8px;
}

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

.news-card-excerpt {
    font-size: 15px;
    color: var(--text-light);
    line-height: 1.6;
    margin-bottom: 16px;
}

.news-card-link {
    display: inline-block;
    color: var(--primary-color);
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    transition: var(--transition);
}

.news-card-link:hover {
    color: #c4664a;
}

/* 联系区域 */
.contact-content {
    max-width: 800px;
    margin: 0 auto;
}

.contact-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 32px;
}

.contact-item {
    text-align: center;
    padding: 32px 24px;
    background: var(--white);
    border-radius: 16px;
    border: 1px solid var(--border-color);
}

.contact-item h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--secondary-color);
    margin-bottom: 12px;
}

.contact-item p {
    font-size: 15px;
    color: var(--text-light);
}

/* 页脚 */
.footer {
    background: var(--secondary-color);
    color: var(--white);
    padding: 64px 0 32px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 48px;
    margin-bottom: 48px;
}

.footer-section h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 16px;
}

.footer-section h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--white);
}

.footer-section p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 14px;
    line-height: 1.6;
}

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

.footer-section ul li {
    margin-bottom: 8px;
}

.footer-section ul li a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    font-size: 14px;
    transition: var(--transition);
}

.footer-section ul li a:hover {
    color: var(--primary-color);
}

.footer-bottom {
    text-align: center;
    padding-top: 32px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.5);
    font-size: 14px;
}

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

/* 响应式设计 */
@media (max-width: 968px) {
    .about-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .features-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }
    
    .news-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 72px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 72px);
        background: var(--bg-color);
        flex-direction: column;
        padding: 40px 24px;
        gap: 24px;
        transition: var(--transition);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .mobile-menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(6px, 6px);
    }
    
    .mobile-menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .mobile-menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(6px, -6px);
    }
    
    .section {
        padding: 80px 0;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 280px;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-info {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }
    
    .section-title {
        font-size: 28px;
    }
    
    .feature-card {
        padding: 32px 24px;
    }
}