:root {
    --primary-color: #10B981;
    --primary-light: #34D399;
    --primary-dark: #059669;
    --secondary-color: #0891B2;
    --secondary-light: #22D3EE;
    --background-white: #FFFFFF;
    --background-light: #F0FDF4;
    --text-dark: #064E3B;
    --text-medium: #065F46;
    --text-light: #6B7280;
    --border-color: #D1FAE5;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --transition-base: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Source Sans 3', sans-serif;
    background-color: var(--background-white);
    color: var(--text-dark);
    line-height: 1.6;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Lexend', sans-serif;
    font-weight: 600;
}

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

header {
    background: linear-gradient(135deg, var(--background-white) 0%, var(--background-light) 100%);
    box-shadow: var(--shadow-sm);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    transition: var(--transition-base);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.logo {
    font-family: 'Lexend', sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: bold;
}

.nav-links {
    display: flex;
    gap: 2rem;
    list-style: none;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-medium);
    font-weight: 500;
    transition: var(--transition-base);
    position: relative;
}

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

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

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

.cta-button {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: white;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 25px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-base);
    text-decoration: none;
    display: inline-block;
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.hero {
    padding: 8rem 0 4rem;
    background: linear-gradient(135deg, var(--background-light) 0%, var(--background-white) 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--primary-light) 0%, transparent 70%);
    opacity: 0.1;
    animation: float 6s ease-in-out infinite;
}

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

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-text h1 {
    font-size: 3rem;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    color: var(--text-dark);
}

.hero-text h1 span {
    color: var(--primary-color);
}

.hero-text p {
    font-size: 1.125rem;
    color: var(--text-light);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
}

.secondary-button {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    padding: 0.75rem 1.5rem;
    border-radius: 25px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-base);
    text-decoration: none;
    display: inline-block;
}

.secondary-button:hover {
    background: var(--primary-color);
    color: white;
}

.hero-image {
    position: relative;
}

.hero-image img {
    width: 100%;
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
}

.stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 3rem;
}

.stat-item {
    text-align: center;
    padding: 1.5rem;
    background: white;
    border-radius: 15px;
    box-shadow: var(--shadow-md);
    transition: var(--transition-base);
}

.stat-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    font-family: 'Lexend', sans-serif;
}

.stat-label {
    color: var(--text-light);
    font-size: 0.875rem;
    margin-top: 0.5rem;
}

.services {
    padding: 5rem 0;
    background: var(--background-white);
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-header h2 {
    font-size: 2.5rem;
    color: var(--text-dark);
    margin-bottom: 1rem;
}

.section-header p {
    color: var(--text-light);
    font-size: 1.125rem;
    max-width: 600px;
    margin: 0 auto;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.services-grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

@media (max-width: 992px) {
    .services-grid-3 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .services-grid-3 {
        grid-template-columns: 1fr;
    }
}

.service-card {
    background: white;
    border-radius: 20px;
    padding: 2rem;
    box-shadow: var(--shadow-md);
    transition: var(--transition-base);
    border: 1px solid var(--border-color);
    cursor: pointer;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-light);
}

.service-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-light), var(--primary-color));
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.service-icon svg {
    width: 32px;
    height: 32px;
    color: white;
}

.service-card h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.service-card p {
    color: var(--text-light);
    line-height: 1.6;
}

.article-card {
    padding: 0;
    overflow: hidden;
    cursor: default;
}

.article-card:hover {
    transform: translateY(-10px);
}

.article-cover {
    width: 100%;
    height: 200px;
    overflow: hidden;
}

.article-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.article-card:hover .article-cover img {
    transform: scale(1.05);
}

.article-content {
    padding: 1.5rem;
}

.article-content h3 {
    margin-bottom: 0.75rem;
}

.article-content h3 a {
    color: var(--text-dark);
    text-decoration: none;
    transition: color 0.3s ease;
}

.article-content h3 a:hover {
    color: var(--primary-color);
}

.article-excerpt {
    font-size: 0.9rem;
    color: var(--text-light);
    line-height: 1.6;
    margin-bottom: 1rem;
}

.read-more {
    display: inline-block;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
    transition: color 0.3s ease;
}

.read-more:hover {
    color: var(--primary-dark);
}

.about {
    padding: 5rem 0;
    background: var(--background-light);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-image img {
    width: 100%;
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
}

.about-text h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    color: var(--text-dark);
}

.about-text p {
    color: var(--text-light);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.features-list {
    list-style: none;
    margin-top: 2rem;
}

.features-list li {
    padding: 0.75rem 0;
    display: flex;
    align-items: center;
    gap: 1rem;
    color: var(--text-medium);
}

.features-list li::before {
    content: '';
    width: 24px;
    height: 24px;
    background: var(--primary-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke-width='3' stroke='white'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' d='m4.5 12.75 6 6 9-13.5'/%3E%3C/svg%3E");
    background-size: 16px 16px;
    background-position: center;
    background-repeat: no-repeat;
}

.testimonials {
    padding: 5rem 0;
    background: var(--background-white);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.testimonial-card {
    background: white;
    border-radius: 20px;
    padding: 2rem;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
}

.testimonial-content {
    font-style: italic;
    color: var(--text-medium);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.author-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-light), var(--primary-color));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: bold;
}

.author-info h4 {
    color: var(--text-dark);
    margin-bottom: 0.25rem;
}

.author-info p {
    color: var(--text-light);
    font-size: 0.875rem;
}

.contact {
    padding: 5rem 0;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: 4rem;
    align-items: center;
}

.contact-info h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

.contact-info p {
    margin-bottom: 2rem;
    opacity: 0.9;
    line-height: 1.8;
}

.contact-details {
    list-style: none;
}

.contact-details li {
    padding: 0.75rem 0;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.contact-details svg {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
}

footer {
    background: var(--text-dark);
    color: white;
    padding: 3rem 0 1.5rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 2rem;
}

.footer-section h3 {
    font-size: 1.25rem;
    margin-bottom: 1.5rem;
}

.footer-section p {
    opacity: 0.8;
    line-height: 1.8;
}

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

.footer-links li {
    margin-bottom: 0.75rem;
}

.footer-links a {
    color: white;
    text-decoration: none;
    opacity: 0.8;
    transition: var(--transition-base);
}

.footer-links a:hover {
    opacity: 1;
    color: var(--primary-light);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 1.5rem;
    text-align: center;
    opacity: 0.7;
}

.footer-beian {
    margin-top: 0.5rem;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.footer-beian .icp-item,
.footer-beian .gongan-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.beian-icon {
    width: 16px;
    height: 16px;
    vertical-align: middle;
}

.footer-beian a {
    color: white;
    text-decoration: none;
    opacity: 0.8;
    transition: var(--transition-base);
    font-size: 0.875rem;
}

.footer-beian a:hover {
    opacity: 1;
    color: var(--primary-light);
}

@media (max-width: 768px) {
    .footer-beian {
        flex-direction: column;
        gap: 0.5rem;
    }
}

.article-detail {
    padding: 8rem 0 4rem;
    background: var(--background-light);
    min-height: 100vh;
}

.article-main {
    background: white;
    border-radius: 20px;
    padding: 3rem;
    box-shadow: var(--shadow-md);
    max-width: 900px;
    margin: 0 auto;
}

.article-cover-full {
    margin: -3rem -3rem 2rem -3rem;
    border-radius: 20px 20px 0 0;
    overflow: hidden;
    max-height: 400px;
}

.article-cover-full img {
    width: 100%;
    height: 400px;
    object-fit: cover;
    display: block;
}

.article-cover {
    margin-bottom: 2rem;
    border-radius: 15px;
    overflow: hidden;
}

.article-cover img {
    width: 100%;
    height: auto;
    display: block;
}

.article-header {
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 2px solid var(--border-color);
}

.article-header h1 {
    font-size: 2.5rem;
    color: var(--text-dark);
    margin-bottom: 1rem;
}

.article-meta {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
    color: var(--text-light);
    font-size: 0.875rem;
}

.article-meta span {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.article-body {
    line-height: 1.8;
    color: var(--text-medium);
}

.article-body h2 {
    margin-top: 2rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.article-body h3 {
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
    color: var(--text-dark);
}

.article-body p {
    margin-bottom: 1rem;
}

.article-body img {
    max-width: 100%;
    height: auto;
    border-radius: 10px;
    margin: 1.5rem 0;
}

.article-body a {
    color: var(--primary-color);
    text-decoration: none;
    border-bottom: 1px solid var(--primary-light);
}

.article-body a:hover {
    color: var(--primary-dark);
}

.article-body code {
    background: var(--background-light);
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-family: 'Courier New', monospace;
    font-size: 0.9em;
}

.article-body pre {
    background: var(--text-dark);
    color: white;
    padding: 1.5rem;
    border-radius: 10px;
    overflow-x: auto;
    margin: 1.5rem 0;
}

.article-body pre code {
    background: none;
    padding: 0;
}

.article-body blockquote {
    border-left: 4px solid var(--primary-color);
    padding-left: 1.5rem;
    margin: 1.5rem 0;
    color: var(--text-light);
    font-style: italic;
}

.article-body ul, .article-body ol {
    margin-left: 2rem;
    margin-bottom: 1rem;
}

.article-body li {
    margin-bottom: 0.5rem;
}

.article-tags {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 2px solid var(--border-color);
}

.tags-label {
    font-weight: 600;
    color: var(--text-dark);
    margin-right: 0.5rem;
}

.article-nav {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 2px solid var(--border-color);
}

.article-nav a {
    padding: 1.5rem;
    background: var(--background-light);
    border-radius: 10px;
    text-decoration: none;
    transition: var(--transition-base);
}

.article-nav a:hover {
    background: var(--primary-light);
    color: white;
}

.article-nav .nav-prev {
    text-align: left;
}

.article-nav .nav-next {
    text-align: right;
}

.article-nav span {
    display: block;
    font-size: 0.875rem;
    color: var(--text-light);
    margin-bottom: 0.5rem;
}

.article-nav a:hover span {
    color: rgba(255, 255, 255, 0.8);
}

.article-nav p {
    font-weight: 600;
    color: var(--text-dark);
    margin: 0;
}

.article-nav a:hover p {
    color: white;
}

.page-detail {
    padding: 8rem 0 4rem;
    background: var(--background-light);
}

.page-content {
    background: white;
    border-radius: 20px;
    padding: 3rem;
    box-shadow: var(--shadow-md);
}

.page-header {
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 2px solid var(--border-color);
}

.page-header h1 {
    font-size: 2.5rem;
    color: var(--text-dark);
}

.page-body {
    line-height: 1.8;
    color: var(--text-medium);
}

.error-page {
    padding: 8rem 0 4rem;
    background: var(--background-light);
    min-height: 60vh;
    display: flex;
    align-items: center;
}

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

.error-icon {
    width: 120px;
    height: 120px;
    margin: 0 auto 2rem;
    background: linear-gradient(135deg, var(--primary-light), var(--primary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.error-icon svg {
    width: 60px;
    height: 60px;
    color: white;
}

.error-content h1 {
    font-size: 6rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-weight: 700;
}

.error-content h2 {
    font-size: 2rem;
    color: var(--text-dark);
    margin-bottom: 1rem;
}

.error-content p {
    color: var(--text-light);
    font-size: 1.125rem;
    margin-bottom: 2rem;
}

.error-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

.secondary-button {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    padding: 0.75rem 1.5rem;
    border-radius: 25px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-base);
    text-decoration: none;
    display: inline-block;
}

.secondary-button:hover {
    background: var(--primary-color);
    color: white;
}

@media (max-width: 768px) {
    .hero-content,
    .about-content {
        grid-template-columns: 1fr;
    }

    .nav-links {
        display: none;
    }

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

    .footer-content {
        grid-template-columns: 1fr;
    }

    .hero-text h1 {
        font-size: 2rem;
    }

    .article-header h1 {
        font-size: 2rem;
    }

    .article-nav {
        grid-template-columns: 1fr;
    }

    .error-content h1 {
        font-size: 4rem;
    }

    .article-main {
        padding: 1.5rem;
        border-radius: 15px;
    }

    .article-cover-full {
        margin: -1.5rem -1.5rem 1.5rem -1.5rem;
        border-radius: 15px 15px 0 0;
        max-height: 250px;
    }

    .article-cover-full img {
        height: 250px;
    }

    .article-meta {
        flex-direction: column;
        gap: 0.75rem;
    }
}

.article-nav .nav-empty {
    padding: 1.5rem;
    background: transparent;
}

.article-tags a {
    display: inline-block;
    background: var(--primary-light);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 15px;
    font-size: 0.875rem;
    text-decoration: none;
    margin-right: 0.5rem;
    margin-bottom: 0.5rem;
    transition: var(--transition-base);
}

.article-tags a:hover {
    background: var(--primary-color);
}